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27bf414c | 1 | /* Parser for C and Objective-C. |
5624e564 | 2 | Copyright (C) 1987-2015 Free Software Foundation, Inc. |
27bf414c JM |
3 | |
4 | Parser actions based on the old Bison parser; structure somewhat | |
5 | influenced by and fragments based on the C++ parser. | |
6 | ||
7 | This file is part of GCC. | |
8 | ||
9 | GCC is free software; you can redistribute it and/or modify it under | |
10 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 11 | Software Foundation; either version 3, or (at your option) any later |
27bf414c JM |
12 | version. |
13 | ||
14 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
15 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
20 | along with GCC; see the file COPYING3. If not see |
21 | <http://www.gnu.org/licenses/>. */ | |
27bf414c JM |
22 | |
23 | /* TODO: | |
24 | ||
25 | Make sure all relevant comments, and all relevant code from all | |
26 | actions, brought over from old parser. Verify exact correspondence | |
27 | of syntax accepted. | |
28 | ||
29 | Add testcases covering every input symbol in every state in old and | |
30 | new parsers. | |
31 | ||
32 | Include full syntax for GNU C, including erroneous cases accepted | |
33 | with error messages, in syntax productions in comments. | |
34 | ||
35 | Make more diagnostics in the front end generally take an explicit | |
36 | location rather than implicitly using input_location. */ | |
37 | ||
38 | #include "config.h" | |
39 | #include "system.h" | |
40 | #include "coretypes.h" | |
f4ce02c5 | 41 | #include "tm.h" /* For rtl.h: needs enum reg_class. */ |
27bf414c | 42 | #include "tree.h" |
d8a2d370 DN |
43 | #include "stringpool.h" |
44 | #include "attribs.h" | |
45 | #include "stor-layout.h" | |
46 | #include "varasm.h" | |
47 | #include "trans-mem.h" | |
27bf414c JM |
48 | #include "langhooks.h" |
49 | #include "input.h" | |
50 | #include "cpplib.h" | |
51 | #include "timevar.h" | |
39dabefd | 52 | #include "c-family/c-pragma.h" |
27bf414c | 53 | #include "c-tree.h" |
acf0174b | 54 | #include "c-lang.h" |
27bf414c | 55 | #include "flags.h" |
27bf414c | 56 | #include "ggc.h" |
39dabefd | 57 | #include "c-family/c-common.h" |
61d3ce20 | 58 | #include "c-family/c-objc.h" |
bc4071dd RH |
59 | #include "vec.h" |
60 | #include "target.h" | |
c582198b AM |
61 | #include "hash-map.h" |
62 | #include "is-a.h" | |
63 | #include "plugin-api.h" | |
64 | #include "hashtab.h" | |
65 | #include "hash-set.h" | |
66 | #include "machmode.h" | |
67 | #include "hard-reg-set.h" | |
68 | #include "function.h" | |
69 | #include "ipa-ref.h" | |
474eccc6 | 70 | #include "cgraph.h" |
68a607d8 | 71 | #include "plugin.h" |
0645c1a2 | 72 | #include "omp-low.h" |
9b2b7279 | 73 | #include "builtins.h" |
27bf414c JM |
74 | |
75 | \f | |
27bf414c JM |
76 | /* Initialization routine for this file. */ |
77 | ||
78 | void | |
79 | c_parse_init (void) | |
80 | { | |
81 | /* The only initialization required is of the reserved word | |
82 | identifiers. */ | |
83 | unsigned int i; | |
84 | tree id; | |
eea1139b | 85 | int mask = 0; |
27bf414c | 86 | |
36c5e70a BE |
87 | /* Make sure RID_MAX hasn't grown past the 8 bits used to hold the keyword in |
88 | the c_token structure. */ | |
89 | gcc_assert (RID_MAX <= 255); | |
90 | ||
eea1139b ILT |
91 | mask |= D_CXXONLY; |
92 | if (!flag_isoc99) | |
93 | mask |= D_C99; | |
94 | if (flag_no_asm) | |
95 | { | |
96 | mask |= D_ASM | D_EXT; | |
97 | if (!flag_isoc99) | |
98 | mask |= D_EXT89; | |
99 | } | |
27bf414c | 100 | if (!c_dialect_objc ()) |
eea1139b | 101 | mask |= D_OBJC | D_CXX_OBJC; |
27bf414c | 102 | |
766090c2 | 103 | ridpointers = ggc_cleared_vec_alloc<tree> ((int) RID_MAX); |
eea1139b | 104 | for (i = 0; i < num_c_common_reswords; i++) |
27bf414c JM |
105 | { |
106 | /* If a keyword is disabled, do not enter it into the table | |
107 | and so create a canonical spelling that isn't a keyword. */ | |
eea1139b ILT |
108 | if (c_common_reswords[i].disable & mask) |
109 | { | |
110 | if (warn_cxx_compat | |
111 | && (c_common_reswords[i].disable & D_CXXWARN)) | |
112 | { | |
113 | id = get_identifier (c_common_reswords[i].word); | |
114 | C_SET_RID_CODE (id, RID_CXX_COMPAT_WARN); | |
115 | C_IS_RESERVED_WORD (id) = 1; | |
116 | } | |
117 | continue; | |
118 | } | |
27bf414c | 119 | |
eea1139b ILT |
120 | id = get_identifier (c_common_reswords[i].word); |
121 | C_SET_RID_CODE (id, c_common_reswords[i].rid); | |
27bf414c | 122 | C_IS_RESERVED_WORD (id) = 1; |
eea1139b | 123 | ridpointers [(int) c_common_reswords[i].rid] = id; |
27bf414c | 124 | } |
78a7c317 DD |
125 | |
126 | for (i = 0; i < NUM_INT_N_ENTS; i++) | |
127 | { | |
128 | /* We always create the symbols but they aren't always supported. */ | |
129 | char name[50]; | |
130 | sprintf (name, "__int%d", int_n_data[i].bitsize); | |
131 | id = get_identifier (xstrdup (name)); | |
132 | C_SET_RID_CODE (id, RID_FIRST_INT_N + i); | |
133 | C_IS_RESERVED_WORD (id) = 1; | |
134 | } | |
27bf414c JM |
135 | } |
136 | \f | |
137 | /* The C lexer intermediates between the lexer in cpplib and c-lex.c | |
138 | and the C parser. Unlike the C++ lexer, the parser structure | |
139 | stores the lexer information instead of using a separate structure. | |
140 | Identifiers are separated into ordinary identifiers, type names, | |
141 | keywords and some other Objective-C types of identifiers, and some | |
142 | look-ahead is maintained. | |
143 | ||
144 | ??? It might be a good idea to lex the whole file up front (as for | |
145 | C++). It would then be possible to share more of the C and C++ | |
146 | lexer code, if desired. */ | |
147 | ||
27bf414c JM |
148 | /* More information about the type of a CPP_NAME token. */ |
149 | typedef enum c_id_kind { | |
150 | /* An ordinary identifier. */ | |
151 | C_ID_ID, | |
152 | /* An identifier declared as a typedef name. */ | |
153 | C_ID_TYPENAME, | |
154 | /* An identifier declared as an Objective-C class name. */ | |
155 | C_ID_CLASSNAME, | |
36c5e70a BE |
156 | /* An address space identifier. */ |
157 | C_ID_ADDRSPACE, | |
27bf414c JM |
158 | /* Not an identifier. */ |
159 | C_ID_NONE | |
160 | } c_id_kind; | |
161 | ||
162 | /* A single C token after string literal concatenation and conversion | |
163 | of preprocessing tokens to tokens. */ | |
d1b38208 | 164 | typedef struct GTY (()) c_token { |
27bf414c JM |
165 | /* The kind of token. */ |
166 | ENUM_BITFIELD (cpp_ttype) type : 8; | |
167 | /* If this token is a CPP_NAME, this value indicates whether also | |
168 | declared as some kind of type. Otherwise, it is C_ID_NONE. */ | |
169 | ENUM_BITFIELD (c_id_kind) id_kind : 8; | |
170 | /* If this token is a keyword, this value indicates which keyword. | |
171 | Otherwise, this value is RID_MAX. */ | |
172 | ENUM_BITFIELD (rid) keyword : 8; | |
bc4071dd RH |
173 | /* If this token is a CPP_PRAGMA, this indicates the pragma that |
174 | was seen. Otherwise it is PRAGMA_NONE. */ | |
13fa1171 | 175 | ENUM_BITFIELD (pragma_kind) pragma_kind : 8; |
27bf414c JM |
176 | /* The location at which this token was found. */ |
177 | location_t location; | |
8415f317 NF |
178 | /* The value associated with this token, if any. */ |
179 | tree value; | |
27bf414c JM |
180 | } c_token; |
181 | ||
182 | /* A parser structure recording information about the state and | |
183 | context of parsing. Includes lexer information with up to two | |
184 | tokens of look-ahead; more are not needed for C. */ | |
d1b38208 | 185 | typedef struct GTY(()) c_parser { |
27bf414c | 186 | /* The look-ahead tokens. */ |
acf0174b JJ |
187 | c_token * GTY((skip)) tokens; |
188 | /* Buffer for look-ahead tokens. */ | |
189 | c_token tokens_buf[2]; | |
190 | /* How many look-ahead tokens are available (0, 1 or 2, or | |
191 | more if parsing from pre-lexed tokens). */ | |
192 | unsigned int tokens_avail; | |
27bf414c JM |
193 | /* True if a syntax error is being recovered from; false otherwise. |
194 | c_parser_error sets this flag. It should clear this flag when | |
195 | enough tokens have been consumed to recover from the error. */ | |
196 | BOOL_BITFIELD error : 1; | |
bc4071dd RH |
197 | /* True if we're processing a pragma, and shouldn't automatically |
198 | consume CPP_PRAGMA_EOL. */ | |
199 | BOOL_BITFIELD in_pragma : 1; | |
b4b56033 MLI |
200 | /* True if we're parsing the outermost block of an if statement. */ |
201 | BOOL_BITFIELD in_if_block : 1; | |
46c2514e TT |
202 | /* True if we want to lex an untranslated string. */ |
203 | BOOL_BITFIELD lex_untranslated_string : 1; | |
1973201f | 204 | |
0bacb8c7 | 205 | /* Objective-C specific parser/lexer information. */ |
1973201f NP |
206 | |
207 | /* True if we are in a context where the Objective-C "PQ" keywords | |
208 | are considered keywords. */ | |
0bacb8c7 | 209 | BOOL_BITFIELD objc_pq_context : 1; |
f05b9d93 NP |
210 | /* True if we are parsing a (potential) Objective-C foreach |
211 | statement. This is set to true after we parsed 'for (' and while | |
212 | we wait for 'in' or ';' to decide if it's a standard C for loop or an | |
213 | Objective-C foreach loop. */ | |
214 | BOOL_BITFIELD objc_could_be_foreach_context : 1; | |
0bacb8c7 TT |
215 | /* The following flag is needed to contextualize Objective-C lexical |
216 | analysis. In some cases (e.g., 'int NSObject;'), it is | |
217 | undesirable to bind an identifier to an Objective-C class, even | |
218 | if a class with that name exists. */ | |
219 | BOOL_BITFIELD objc_need_raw_identifier : 1; | |
0a35513e AH |
220 | /* Nonzero if we're processing a __transaction statement. The value |
221 | is 1 | TM_STMT_ATTR_*. */ | |
222 | unsigned int in_transaction : 4; | |
668ea4b1 IS |
223 | /* True if we are in a context where the Objective-C "Property attribute" |
224 | keywords are valid. */ | |
225 | BOOL_BITFIELD objc_property_attr_context : 1; | |
41958c28 BI |
226 | |
227 | /* Cilk Plus specific parser/lexer information. */ | |
228 | ||
229 | /* Buffer to hold all the tokens from parsing the vector attribute for the | |
230 | SIMD-enabled functions (formerly known as elemental functions). */ | |
231 | vec <c_token, va_gc> *cilk_simd_fn_tokens; | |
27bf414c JM |
232 | } c_parser; |
233 | ||
bc4071dd RH |
234 | |
235 | /* The actual parser and external interface. ??? Does this need to be | |
236 | garbage-collected? */ | |
237 | ||
238 | static GTY (()) c_parser *the_parser; | |
239 | ||
27bf414c JM |
240 | /* Read in and lex a single token, storing it in *TOKEN. */ |
241 | ||
242 | static void | |
0bacb8c7 | 243 | c_lex_one_token (c_parser *parser, c_token *token) |
27bf414c JM |
244 | { |
245 | timevar_push (TV_LEX); | |
bc4071dd | 246 | |
46c2514e TT |
247 | token->type = c_lex_with_flags (&token->value, &token->location, NULL, |
248 | (parser->lex_untranslated_string | |
249 | ? C_LEX_STRING_NO_TRANSLATE : 0)); | |
bc4071dd RH |
250 | token->id_kind = C_ID_NONE; |
251 | token->keyword = RID_MAX; | |
252 | token->pragma_kind = PRAGMA_NONE; | |
bc4071dd | 253 | |
27bf414c JM |
254 | switch (token->type) |
255 | { | |
256 | case CPP_NAME: | |
27bf414c JM |
257 | { |
258 | tree decl; | |
259 | ||
0bacb8c7 TT |
260 | bool objc_force_identifier = parser->objc_need_raw_identifier; |
261 | if (c_dialect_objc ()) | |
262 | parser->objc_need_raw_identifier = false; | |
27bf414c JM |
263 | |
264 | if (C_IS_RESERVED_WORD (token->value)) | |
265 | { | |
266 | enum rid rid_code = C_RID_CODE (token->value); | |
267 | ||
eea1139b ILT |
268 | if (rid_code == RID_CXX_COMPAT_WARN) |
269 | { | |
3ba09659 AH |
270 | warning_at (token->location, |
271 | OPT_Wc___compat, | |
88388a52 JM |
272 | "identifier %qE conflicts with C++ keyword", |
273 | token->value); | |
eea1139b | 274 | } |
36c5e70a BE |
275 | else if (rid_code >= RID_FIRST_ADDR_SPACE |
276 | && rid_code <= RID_LAST_ADDR_SPACE) | |
277 | { | |
278 | token->id_kind = C_ID_ADDRSPACE; | |
279 | token->keyword = rid_code; | |
280 | break; | |
281 | } | |
1973201f | 282 | else if (c_dialect_objc () && OBJC_IS_PQ_KEYWORD (rid_code)) |
27bf414c | 283 | { |
1973201f NP |
284 | /* We found an Objective-C "pq" keyword (in, out, |
285 | inout, bycopy, byref, oneway). They need special | |
286 | care because the interpretation depends on the | |
d853ee42 | 287 | context. */ |
1973201f | 288 | if (parser->objc_pq_context) |
27bf414c | 289 | { |
27bf414c JM |
290 | token->type = CPP_KEYWORD; |
291 | token->keyword = rid_code; | |
292 | break; | |
293 | } | |
f05b9d93 NP |
294 | else if (parser->objc_could_be_foreach_context |
295 | && rid_code == RID_IN) | |
296 | { | |
297 | /* We are in Objective-C, inside a (potential) | |
298 | foreach context (which means after having | |
299 | parsed 'for (', but before having parsed ';'), | |
300 | and we found 'in'. We consider it the keyword | |
301 | which terminates the declaration at the | |
302 | beginning of a foreach-statement. Note that | |
303 | this means you can't use 'in' for anything else | |
304 | in that context; in particular, in Objective-C | |
305 | you can't use 'in' as the name of the running | |
306 | variable in a C for loop. We could potentially | |
307 | try to add code here to disambiguate, but it | |
d853ee42 | 308 | seems a reasonable limitation. */ |
f05b9d93 NP |
309 | token->type = CPP_KEYWORD; |
310 | token->keyword = rid_code; | |
311 | break; | |
312 | } | |
1973201f NP |
313 | /* Else, "pq" keywords outside of the "pq" context are |
314 | not keywords, and we fall through to the code for | |
d853ee42 | 315 | normal tokens. */ |
1973201f | 316 | } |
668ea4b1 IS |
317 | else if (c_dialect_objc () && OBJC_IS_PATTR_KEYWORD (rid_code)) |
318 | { | |
d853ee42 NP |
319 | /* We found an Objective-C "property attribute" |
320 | keyword (getter, setter, readonly, etc). These are | |
668ea4b1 IS |
321 | only valid in the property context. */ |
322 | if (parser->objc_property_attr_context) | |
323 | { | |
324 | token->type = CPP_KEYWORD; | |
325 | token->keyword = rid_code; | |
326 | break; | |
327 | } | |
328 | /* Else they are not special keywords. | |
329 | */ | |
330 | } | |
1973201f NP |
331 | else if (c_dialect_objc () |
332 | && (OBJC_IS_AT_KEYWORD (rid_code) | |
333 | || OBJC_IS_CXX_KEYWORD (rid_code))) | |
334 | { | |
335 | /* We found one of the Objective-C "@" keywords (defs, | |
336 | selector, synchronized, etc) or one of the | |
337 | Objective-C "cxx" keywords (class, private, | |
338 | protected, public, try, catch, throw) without a | |
339 | preceding '@' sign. Do nothing and fall through to | |
340 | the code for normal tokens (in C++ we would still | |
d853ee42 | 341 | consider the CXX ones keywords, but not in C). */ |
1973201f | 342 | ; |
27bf414c JM |
343 | } |
344 | else | |
345 | { | |
27bf414c JM |
346 | token->type = CPP_KEYWORD; |
347 | token->keyword = rid_code; | |
348 | break; | |
349 | } | |
350 | } | |
351 | ||
352 | decl = lookup_name (token->value); | |
353 | if (decl) | |
354 | { | |
355 | if (TREE_CODE (decl) == TYPE_DECL) | |
356 | { | |
357 | token->id_kind = C_ID_TYPENAME; | |
358 | break; | |
359 | } | |
360 | } | |
361 | else if (c_dialect_objc ()) | |
362 | { | |
363 | tree objc_interface_decl = objc_is_class_name (token->value); | |
364 | /* Objective-C class names are in the same namespace as | |
365 | variables and typedefs, and hence are shadowed by local | |
366 | declarations. */ | |
367 | if (objc_interface_decl | |
0d8a2528 | 368 | && (!objc_force_identifier || global_bindings_p ())) |
27bf414c JM |
369 | { |
370 | token->value = objc_interface_decl; | |
371 | token->id_kind = C_ID_CLASSNAME; | |
372 | break; | |
373 | } | |
374 | } | |
bc4071dd | 375 | token->id_kind = C_ID_ID; |
27bf414c | 376 | } |
27bf414c JM |
377 | break; |
378 | case CPP_AT_NAME: | |
379 | /* This only happens in Objective-C; it must be a keyword. */ | |
380 | token->type = CPP_KEYWORD; | |
49b91f05 NP |
381 | switch (C_RID_CODE (token->value)) |
382 | { | |
383 | /* Replace 'class' with '@class', 'private' with '@private', | |
384 | etc. This prevents confusion with the C++ keyword | |
385 | 'class', and makes the tokens consistent with other | |
386 | Objective-C 'AT' keywords. For example '@class' is | |
387 | reported as RID_AT_CLASS which is consistent with | |
388 | '@synchronized', which is reported as | |
389 | RID_AT_SYNCHRONIZED. | |
390 | */ | |
391 | case RID_CLASS: token->keyword = RID_AT_CLASS; break; | |
392 | case RID_PRIVATE: token->keyword = RID_AT_PRIVATE; break; | |
393 | case RID_PROTECTED: token->keyword = RID_AT_PROTECTED; break; | |
394 | case RID_PUBLIC: token->keyword = RID_AT_PUBLIC; break; | |
395 | case RID_THROW: token->keyword = RID_AT_THROW; break; | |
396 | case RID_TRY: token->keyword = RID_AT_TRY; break; | |
397 | case RID_CATCH: token->keyword = RID_AT_CATCH; break; | |
398 | default: token->keyword = C_RID_CODE (token->value); | |
399 | } | |
27bf414c JM |
400 | break; |
401 | case CPP_COLON: | |
402 | case CPP_COMMA: | |
403 | case CPP_CLOSE_PAREN: | |
404 | case CPP_SEMICOLON: | |
405 | /* These tokens may affect the interpretation of any identifiers | |
406 | following, if doing Objective-C. */ | |
0bacb8c7 TT |
407 | if (c_dialect_objc ()) |
408 | parser->objc_need_raw_identifier = false; | |
bc4071dd RH |
409 | break; |
410 | case CPP_PRAGMA: | |
411 | /* We smuggled the cpp_token->u.pragma value in an INTEGER_CST. */ | |
d75d71e0 | 412 | token->pragma_kind = (enum pragma_kind) TREE_INT_CST_LOW (token->value); |
bc4071dd | 413 | token->value = NULL; |
27bf414c JM |
414 | break; |
415 | default: | |
27bf414c JM |
416 | break; |
417 | } | |
418 | timevar_pop (TV_LEX); | |
419 | } | |
420 | ||
421 | /* Return a pointer to the next token from PARSER, reading it in if | |
422 | necessary. */ | |
423 | ||
424 | static inline c_token * | |
425 | c_parser_peek_token (c_parser *parser) | |
426 | { | |
427 | if (parser->tokens_avail == 0) | |
428 | { | |
0bacb8c7 | 429 | c_lex_one_token (parser, &parser->tokens[0]); |
27bf414c JM |
430 | parser->tokens_avail = 1; |
431 | } | |
432 | return &parser->tokens[0]; | |
433 | } | |
434 | ||
435 | /* Return true if the next token from PARSER has the indicated | |
436 | TYPE. */ | |
437 | ||
438 | static inline bool | |
439 | c_parser_next_token_is (c_parser *parser, enum cpp_ttype type) | |
440 | { | |
441 | return c_parser_peek_token (parser)->type == type; | |
442 | } | |
443 | ||
444 | /* Return true if the next token from PARSER does not have the | |
445 | indicated TYPE. */ | |
446 | ||
447 | static inline bool | |
448 | c_parser_next_token_is_not (c_parser *parser, enum cpp_ttype type) | |
449 | { | |
450 | return !c_parser_next_token_is (parser, type); | |
451 | } | |
452 | ||
453 | /* Return true if the next token from PARSER is the indicated | |
454 | KEYWORD. */ | |
455 | ||
456 | static inline bool | |
457 | c_parser_next_token_is_keyword (c_parser *parser, enum rid keyword) | |
458 | { | |
dbc518f0 | 459 | return c_parser_peek_token (parser)->keyword == keyword; |
27bf414c JM |
460 | } |
461 | ||
29ce73cb PB |
462 | /* Return a pointer to the next-but-one token from PARSER, reading it |
463 | in if necessary. The next token is already read in. */ | |
464 | ||
465 | static c_token * | |
466 | c_parser_peek_2nd_token (c_parser *parser) | |
467 | { | |
468 | if (parser->tokens_avail >= 2) | |
469 | return &parser->tokens[1]; | |
470 | gcc_assert (parser->tokens_avail == 1); | |
471 | gcc_assert (parser->tokens[0].type != CPP_EOF); | |
472 | gcc_assert (parser->tokens[0].type != CPP_PRAGMA_EOL); | |
473 | c_lex_one_token (parser, &parser->tokens[1]); | |
474 | parser->tokens_avail = 2; | |
475 | return &parser->tokens[1]; | |
476 | } | |
477 | ||
27bf414c JM |
478 | /* Return true if TOKEN can start a type name, |
479 | false otherwise. */ | |
480 | static bool | |
481 | c_token_starts_typename (c_token *token) | |
482 | { | |
483 | switch (token->type) | |
484 | { | |
485 | case CPP_NAME: | |
486 | switch (token->id_kind) | |
487 | { | |
488 | case C_ID_ID: | |
489 | return false; | |
36c5e70a BE |
490 | case C_ID_ADDRSPACE: |
491 | return true; | |
27bf414c JM |
492 | case C_ID_TYPENAME: |
493 | return true; | |
494 | case C_ID_CLASSNAME: | |
495 | gcc_assert (c_dialect_objc ()); | |
496 | return true; | |
497 | default: | |
498 | gcc_unreachable (); | |
499 | } | |
500 | case CPP_KEYWORD: | |
501 | switch (token->keyword) | |
502 | { | |
503 | case RID_UNSIGNED: | |
504 | case RID_LONG: | |
505 | case RID_SHORT: | |
506 | case RID_SIGNED: | |
507 | case RID_COMPLEX: | |
508 | case RID_INT: | |
509 | case RID_CHAR: | |
510 | case RID_FLOAT: | |
511 | case RID_DOUBLE: | |
512 | case RID_VOID: | |
9a8ce21f JG |
513 | case RID_DFLOAT32: |
514 | case RID_DFLOAT64: | |
515 | case RID_DFLOAT128: | |
27bf414c JM |
516 | case RID_BOOL: |
517 | case RID_ENUM: | |
518 | case RID_STRUCT: | |
519 | case RID_UNION: | |
520 | case RID_TYPEOF: | |
521 | case RID_CONST: | |
267bac10 | 522 | case RID_ATOMIC: |
27bf414c JM |
523 | case RID_VOLATILE: |
524 | case RID_RESTRICT: | |
525 | case RID_ATTRIBUTE: | |
ab22c1fa CF |
526 | case RID_FRACT: |
527 | case RID_ACCUM: | |
528 | case RID_SAT: | |
38b7bc7f | 529 | case RID_AUTO_TYPE: |
27bf414c JM |
530 | return true; |
531 | default: | |
78a7c317 DD |
532 | if (token->keyword >= RID_FIRST_INT_N |
533 | && token->keyword < RID_FIRST_INT_N + NUM_INT_N_ENTS | |
534 | && int_n_enabled_p[token->keyword - RID_FIRST_INT_N]) | |
535 | return true; | |
27bf414c JM |
536 | return false; |
537 | } | |
538 | case CPP_LESS: | |
539 | if (c_dialect_objc ()) | |
540 | return true; | |
541 | return false; | |
542 | default: | |
543 | return false; | |
544 | } | |
545 | } | |
546 | ||
29ce73cb PB |
547 | enum c_lookahead_kind { |
548 | /* Always treat unknown identifiers as typenames. */ | |
549 | cla_prefer_type, | |
550 | ||
551 | /* Could be parsing a nonabstract declarator. Only treat an identifier | |
552 | as a typename if followed by another identifier or a star. */ | |
553 | cla_nonabstract_decl, | |
554 | ||
555 | /* Never treat identifiers as typenames. */ | |
556 | cla_prefer_id | |
557 | }; | |
558 | ||
27bf414c | 559 | /* Return true if the next token from PARSER can start a type name, |
29ce73cb PB |
560 | false otherwise. LA specifies how to do lookahead in order to |
561 | detect unknown type names. If unsure, pick CLA_PREFER_ID. */ | |
562 | ||
27bf414c | 563 | static inline bool |
29ce73cb | 564 | c_parser_next_tokens_start_typename (c_parser *parser, enum c_lookahead_kind la) |
27bf414c JM |
565 | { |
566 | c_token *token = c_parser_peek_token (parser); | |
29ce73cb PB |
567 | if (c_token_starts_typename (token)) |
568 | return true; | |
569 | ||
570 | /* Try a bit harder to detect an unknown typename. */ | |
571 | if (la != cla_prefer_id | |
572 | && token->type == CPP_NAME | |
573 | && token->id_kind == C_ID_ID | |
574 | ||
575 | /* Do not try too hard when we could have "object in array". */ | |
576 | && !parser->objc_could_be_foreach_context | |
577 | ||
578 | && (la == cla_prefer_type | |
579 | || c_parser_peek_2nd_token (parser)->type == CPP_NAME | |
580 | || c_parser_peek_2nd_token (parser)->type == CPP_MULT) | |
581 | ||
582 | /* Only unknown identifiers. */ | |
583 | && !lookup_name (token->value)) | |
584 | return true; | |
585 | ||
586 | return false; | |
27bf414c JM |
587 | } |
588 | ||
f725e721 PB |
589 | /* Return true if TOKEN is a type qualifier, false otherwise. */ |
590 | static bool | |
591 | c_token_is_qualifier (c_token *token) | |
592 | { | |
593 | switch (token->type) | |
594 | { | |
595 | case CPP_NAME: | |
596 | switch (token->id_kind) | |
597 | { | |
598 | case C_ID_ADDRSPACE: | |
599 | return true; | |
600 | default: | |
601 | return false; | |
602 | } | |
603 | case CPP_KEYWORD: | |
604 | switch (token->keyword) | |
605 | { | |
606 | case RID_CONST: | |
607 | case RID_VOLATILE: | |
608 | case RID_RESTRICT: | |
609 | case RID_ATTRIBUTE: | |
267bac10 | 610 | case RID_ATOMIC: |
f725e721 PB |
611 | return true; |
612 | default: | |
613 | return false; | |
614 | } | |
615 | case CPP_LESS: | |
616 | return false; | |
617 | default: | |
618 | gcc_unreachable (); | |
619 | } | |
620 | } | |
621 | ||
622 | /* Return true if the next token from PARSER is a type qualifier, | |
623 | false otherwise. */ | |
624 | static inline bool | |
625 | c_parser_next_token_is_qualifier (c_parser *parser) | |
626 | { | |
627 | c_token *token = c_parser_peek_token (parser); | |
628 | return c_token_is_qualifier (token); | |
629 | } | |
630 | ||
27bf414c JM |
631 | /* Return true if TOKEN can start declaration specifiers, false |
632 | otherwise. */ | |
633 | static bool | |
634 | c_token_starts_declspecs (c_token *token) | |
635 | { | |
636 | switch (token->type) | |
637 | { | |
638 | case CPP_NAME: | |
639 | switch (token->id_kind) | |
640 | { | |
641 | case C_ID_ID: | |
642 | return false; | |
36c5e70a BE |
643 | case C_ID_ADDRSPACE: |
644 | return true; | |
27bf414c JM |
645 | case C_ID_TYPENAME: |
646 | return true; | |
647 | case C_ID_CLASSNAME: | |
648 | gcc_assert (c_dialect_objc ()); | |
649 | return true; | |
650 | default: | |
651 | gcc_unreachable (); | |
652 | } | |
653 | case CPP_KEYWORD: | |
654 | switch (token->keyword) | |
655 | { | |
656 | case RID_STATIC: | |
657 | case RID_EXTERN: | |
658 | case RID_REGISTER: | |
659 | case RID_TYPEDEF: | |
660 | case RID_INLINE: | |
bbceee64 | 661 | case RID_NORETURN: |
27bf414c JM |
662 | case RID_AUTO: |
663 | case RID_THREAD: | |
664 | case RID_UNSIGNED: | |
665 | case RID_LONG: | |
666 | case RID_SHORT: | |
667 | case RID_SIGNED: | |
668 | case RID_COMPLEX: | |
669 | case RID_INT: | |
670 | case RID_CHAR: | |
671 | case RID_FLOAT: | |
672 | case RID_DOUBLE: | |
673 | case RID_VOID: | |
9a8ce21f JG |
674 | case RID_DFLOAT32: |
675 | case RID_DFLOAT64: | |
676 | case RID_DFLOAT128: | |
27bf414c JM |
677 | case RID_BOOL: |
678 | case RID_ENUM: | |
679 | case RID_STRUCT: | |
680 | case RID_UNION: | |
681 | case RID_TYPEOF: | |
682 | case RID_CONST: | |
683 | case RID_VOLATILE: | |
684 | case RID_RESTRICT: | |
685 | case RID_ATTRIBUTE: | |
ab22c1fa CF |
686 | case RID_FRACT: |
687 | case RID_ACCUM: | |
688 | case RID_SAT: | |
d19fa6b5 | 689 | case RID_ALIGNAS: |
267bac10 | 690 | case RID_ATOMIC: |
38b7bc7f | 691 | case RID_AUTO_TYPE: |
27bf414c JM |
692 | return true; |
693 | default: | |
78a7c317 DD |
694 | if (token->keyword >= RID_FIRST_INT_N |
695 | && token->keyword < RID_FIRST_INT_N + NUM_INT_N_ENTS | |
696 | && int_n_enabled_p[token->keyword - RID_FIRST_INT_N]) | |
697 | return true; | |
27bf414c JM |
698 | return false; |
699 | } | |
700 | case CPP_LESS: | |
701 | if (c_dialect_objc ()) | |
702 | return true; | |
703 | return false; | |
704 | default: | |
705 | return false; | |
706 | } | |
707 | } | |
708 | ||
32912286 JM |
709 | |
710 | /* Return true if TOKEN can start declaration specifiers or a static | |
711 | assertion, false otherwise. */ | |
712 | static bool | |
713 | c_token_starts_declaration (c_token *token) | |
714 | { | |
715 | if (c_token_starts_declspecs (token) | |
716 | || token->keyword == RID_STATIC_ASSERT) | |
717 | return true; | |
718 | else | |
719 | return false; | |
720 | } | |
721 | ||
27bf414c JM |
722 | /* Return true if the next token from PARSER can start declaration |
723 | specifiers, false otherwise. */ | |
724 | static inline bool | |
725 | c_parser_next_token_starts_declspecs (c_parser *parser) | |
726 | { | |
727 | c_token *token = c_parser_peek_token (parser); | |
bede2adc NP |
728 | |
729 | /* In Objective-C, a classname normally starts a declspecs unless it | |
730 | is immediately followed by a dot. In that case, it is the | |
731 | Objective-C 2.0 "dot-syntax" for class objects, ie, calls the | |
732 | setter/getter on the class. c_token_starts_declspecs() can't | |
733 | differentiate between the two cases because it only checks the | |
734 | current token, so we have a special check here. */ | |
735 | if (c_dialect_objc () | |
736 | && token->type == CPP_NAME | |
737 | && token->id_kind == C_ID_CLASSNAME | |
738 | && c_parser_peek_2nd_token (parser)->type == CPP_DOT) | |
739 | return false; | |
740 | ||
27bf414c JM |
741 | return c_token_starts_declspecs (token); |
742 | } | |
743 | ||
2f413185 | 744 | /* Return true if the next tokens from PARSER can start declaration |
32912286 JM |
745 | specifiers or a static assertion, false otherwise. */ |
746 | static inline bool | |
2f413185 | 747 | c_parser_next_tokens_start_declaration (c_parser *parser) |
32912286 JM |
748 | { |
749 | c_token *token = c_parser_peek_token (parser); | |
bede2adc NP |
750 | |
751 | /* Same as above. */ | |
752 | if (c_dialect_objc () | |
753 | && token->type == CPP_NAME | |
754 | && token->id_kind == C_ID_CLASSNAME | |
755 | && c_parser_peek_2nd_token (parser)->type == CPP_DOT) | |
756 | return false; | |
757 | ||
2f413185 PB |
758 | /* Labels do not start declarations. */ |
759 | if (token->type == CPP_NAME | |
760 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON) | |
761 | return false; | |
762 | ||
763 | if (c_token_starts_declaration (token)) | |
764 | return true; | |
765 | ||
29ce73cb | 766 | if (c_parser_next_tokens_start_typename (parser, cla_nonabstract_decl)) |
2f413185 PB |
767 | return true; |
768 | ||
769 | return false; | |
32912286 JM |
770 | } |
771 | ||
27bf414c JM |
772 | /* Consume the next token from PARSER. */ |
773 | ||
774 | static void | |
775 | c_parser_consume_token (c_parser *parser) | |
776 | { | |
bc4071dd RH |
777 | gcc_assert (parser->tokens_avail >= 1); |
778 | gcc_assert (parser->tokens[0].type != CPP_EOF); | |
779 | gcc_assert (!parser->in_pragma || parser->tokens[0].type != CPP_PRAGMA_EOL); | |
780 | gcc_assert (parser->error || parser->tokens[0].type != CPP_PRAGMA); | |
acf0174b JJ |
781 | if (parser->tokens != &parser->tokens_buf[0]) |
782 | parser->tokens++; | |
783 | else if (parser->tokens_avail == 2) | |
27bf414c | 784 | parser->tokens[0] = parser->tokens[1]; |
27bf414c JM |
785 | parser->tokens_avail--; |
786 | } | |
787 | ||
bc4071dd RH |
788 | /* Expect the current token to be a #pragma. Consume it and remember |
789 | that we've begun parsing a pragma. */ | |
790 | ||
791 | static void | |
792 | c_parser_consume_pragma (c_parser *parser) | |
793 | { | |
794 | gcc_assert (!parser->in_pragma); | |
795 | gcc_assert (parser->tokens_avail >= 1); | |
796 | gcc_assert (parser->tokens[0].type == CPP_PRAGMA); | |
acf0174b JJ |
797 | if (parser->tokens != &parser->tokens_buf[0]) |
798 | parser->tokens++; | |
799 | else if (parser->tokens_avail == 2) | |
bc4071dd RH |
800 | parser->tokens[0] = parser->tokens[1]; |
801 | parser->tokens_avail--; | |
802 | parser->in_pragma = true; | |
803 | } | |
804 | ||
8400e75e | 805 | /* Update the global input_location from TOKEN. */ |
27bf414c JM |
806 | static inline void |
807 | c_parser_set_source_position_from_token (c_token *token) | |
808 | { | |
809 | if (token->type != CPP_EOF) | |
810 | { | |
811 | input_location = token->location; | |
27bf414c JM |
812 | } |
813 | } | |
814 | ||
27bf414c JM |
815 | /* Issue a diagnostic of the form |
816 | FILE:LINE: MESSAGE before TOKEN | |
817 | where TOKEN is the next token in the input stream of PARSER. | |
818 | MESSAGE (specified by the caller) is usually of the form "expected | |
819 | OTHER-TOKEN". | |
820 | ||
821 | Do not issue a diagnostic if still recovering from an error. | |
822 | ||
823 | ??? This is taken from the C++ parser, but building up messages in | |
824 | this way is not i18n-friendly and some other approach should be | |
825 | used. */ | |
826 | ||
827 | static void | |
4b794eaf | 828 | c_parser_error (c_parser *parser, const char *gmsgid) |
27bf414c JM |
829 | { |
830 | c_token *token = c_parser_peek_token (parser); | |
831 | if (parser->error) | |
832 | return; | |
833 | parser->error = true; | |
4b794eaf | 834 | if (!gmsgid) |
27bf414c JM |
835 | return; |
836 | /* This diagnostic makes more sense if it is tagged to the line of | |
837 | the token we just peeked at. */ | |
838 | c_parser_set_source_position_from_token (token); | |
4b794eaf | 839 | c_parse_error (gmsgid, |
27bf414c JM |
840 | /* Because c_parse_error does not understand |
841 | CPP_KEYWORD, keywords are treated like | |
842 | identifiers. */ | |
843 | (token->type == CPP_KEYWORD ? CPP_NAME : token->type), | |
cfc93532 MLI |
844 | /* ??? The C parser does not save the cpp flags of a |
845 | token, we need to pass 0 here and we will not get | |
846 | the source spelling of some tokens but rather the | |
847 | canonical spelling. */ | |
848 | token->value, /*flags=*/0); | |
27bf414c JM |
849 | } |
850 | ||
851 | /* If the next token is of the indicated TYPE, consume it. Otherwise, | |
852 | issue the error MSGID. If MSGID is NULL then a message has already | |
853 | been produced and no message will be produced this time. Returns | |
854 | true if found, false otherwise. */ | |
855 | ||
856 | static bool | |
857 | c_parser_require (c_parser *parser, | |
858 | enum cpp_ttype type, | |
859 | const char *msgid) | |
860 | { | |
861 | if (c_parser_next_token_is (parser, type)) | |
862 | { | |
863 | c_parser_consume_token (parser); | |
864 | return true; | |
865 | } | |
866 | else | |
867 | { | |
868 | c_parser_error (parser, msgid); | |
869 | return false; | |
870 | } | |
871 | } | |
872 | ||
873 | /* If the next token is the indicated keyword, consume it. Otherwise, | |
874 | issue the error MSGID. Returns true if found, false otherwise. */ | |
875 | ||
876 | static bool | |
877 | c_parser_require_keyword (c_parser *parser, | |
878 | enum rid keyword, | |
879 | const char *msgid) | |
880 | { | |
881 | if (c_parser_next_token_is_keyword (parser, keyword)) | |
882 | { | |
883 | c_parser_consume_token (parser); | |
884 | return true; | |
885 | } | |
886 | else | |
887 | { | |
888 | c_parser_error (parser, msgid); | |
889 | return false; | |
890 | } | |
891 | } | |
892 | ||
893 | /* Like c_parser_require, except that tokens will be skipped until the | |
894 | desired token is found. An error message is still produced if the | |
895 | next token is not as expected. If MSGID is NULL then a message has | |
896 | already been produced and no message will be produced this | |
897 | time. */ | |
898 | ||
899 | static void | |
900 | c_parser_skip_until_found (c_parser *parser, | |
901 | enum cpp_ttype type, | |
902 | const char *msgid) | |
903 | { | |
904 | unsigned nesting_depth = 0; | |
905 | ||
906 | if (c_parser_require (parser, type, msgid)) | |
907 | return; | |
908 | ||
909 | /* Skip tokens until the desired token is found. */ | |
910 | while (true) | |
911 | { | |
912 | /* Peek at the next token. */ | |
913 | c_token *token = c_parser_peek_token (parser); | |
914 | /* If we've reached the token we want, consume it and stop. */ | |
915 | if (token->type == type && !nesting_depth) | |
916 | { | |
917 | c_parser_consume_token (parser); | |
918 | break; | |
919 | } | |
bc4071dd | 920 | |
27bf414c JM |
921 | /* If we've run out of tokens, stop. */ |
922 | if (token->type == CPP_EOF) | |
923 | return; | |
bc4071dd RH |
924 | if (token->type == CPP_PRAGMA_EOL && parser->in_pragma) |
925 | return; | |
27bf414c JM |
926 | if (token->type == CPP_OPEN_BRACE |
927 | || token->type == CPP_OPEN_PAREN | |
928 | || token->type == CPP_OPEN_SQUARE) | |
929 | ++nesting_depth; | |
930 | else if (token->type == CPP_CLOSE_BRACE | |
931 | || token->type == CPP_CLOSE_PAREN | |
932 | || token->type == CPP_CLOSE_SQUARE) | |
933 | { | |
934 | if (nesting_depth-- == 0) | |
935 | break; | |
936 | } | |
937 | /* Consume this token. */ | |
938 | c_parser_consume_token (parser); | |
939 | } | |
940 | parser->error = false; | |
941 | } | |
942 | ||
943 | /* Skip tokens until the end of a parameter is found, but do not | |
944 | consume the comma, semicolon or closing delimiter. */ | |
945 | ||
946 | static void | |
947 | c_parser_skip_to_end_of_parameter (c_parser *parser) | |
948 | { | |
949 | unsigned nesting_depth = 0; | |
950 | ||
951 | while (true) | |
952 | { | |
953 | c_token *token = c_parser_peek_token (parser); | |
954 | if ((token->type == CPP_COMMA || token->type == CPP_SEMICOLON) | |
955 | && !nesting_depth) | |
956 | break; | |
957 | /* If we've run out of tokens, stop. */ | |
958 | if (token->type == CPP_EOF) | |
959 | return; | |
bc4071dd RH |
960 | if (token->type == CPP_PRAGMA_EOL && parser->in_pragma) |
961 | return; | |
27bf414c JM |
962 | if (token->type == CPP_OPEN_BRACE |
963 | || token->type == CPP_OPEN_PAREN | |
964 | || token->type == CPP_OPEN_SQUARE) | |
965 | ++nesting_depth; | |
966 | else if (token->type == CPP_CLOSE_BRACE | |
967 | || token->type == CPP_CLOSE_PAREN | |
968 | || token->type == CPP_CLOSE_SQUARE) | |
969 | { | |
970 | if (nesting_depth-- == 0) | |
971 | break; | |
972 | } | |
973 | /* Consume this token. */ | |
974 | c_parser_consume_token (parser); | |
975 | } | |
976 | parser->error = false; | |
977 | } | |
978 | ||
bc4071dd RH |
979 | /* Expect to be at the end of the pragma directive and consume an |
980 | end of line marker. */ | |
981 | ||
982 | static void | |
983 | c_parser_skip_to_pragma_eol (c_parser *parser) | |
984 | { | |
985 | gcc_assert (parser->in_pragma); | |
986 | parser->in_pragma = false; | |
987 | ||
988 | if (!c_parser_require (parser, CPP_PRAGMA_EOL, "expected end of line")) | |
989 | while (true) | |
990 | { | |
991 | c_token *token = c_parser_peek_token (parser); | |
992 | if (token->type == CPP_EOF) | |
993 | break; | |
994 | if (token->type == CPP_PRAGMA_EOL) | |
995 | { | |
996 | c_parser_consume_token (parser); | |
997 | break; | |
998 | } | |
999 | c_parser_consume_token (parser); | |
1000 | } | |
1001 | ||
1002 | parser->error = false; | |
1003 | } | |
27bf414c | 1004 | |
2a83cc52 RH |
1005 | /* Skip tokens until we have consumed an entire block, or until we |
1006 | have consumed a non-nested ';'. */ | |
1007 | ||
1008 | static void | |
1009 | c_parser_skip_to_end_of_block_or_statement (c_parser *parser) | |
1010 | { | |
1011 | unsigned nesting_depth = 0; | |
1012 | bool save_error = parser->error; | |
1013 | ||
1014 | while (true) | |
1015 | { | |
1016 | c_token *token; | |
1017 | ||
1018 | /* Peek at the next token. */ | |
1019 | token = c_parser_peek_token (parser); | |
1020 | ||
1021 | switch (token->type) | |
1022 | { | |
1023 | case CPP_EOF: | |
1024 | return; | |
1025 | ||
1026 | case CPP_PRAGMA_EOL: | |
1027 | if (parser->in_pragma) | |
1028 | return; | |
1029 | break; | |
1030 | ||
1031 | case CPP_SEMICOLON: | |
1032 | /* If the next token is a ';', we have reached the | |
1033 | end of the statement. */ | |
1034 | if (!nesting_depth) | |
1035 | { | |
1036 | /* Consume the ';'. */ | |
1037 | c_parser_consume_token (parser); | |
1038 | goto finished; | |
1039 | } | |
1040 | break; | |
1041 | ||
1042 | case CPP_CLOSE_BRACE: | |
1043 | /* If the next token is a non-nested '}', then we have | |
1044 | reached the end of the current block. */ | |
1045 | if (nesting_depth == 0 || --nesting_depth == 0) | |
1046 | { | |
1047 | c_parser_consume_token (parser); | |
1048 | goto finished; | |
1049 | } | |
1050 | break; | |
1051 | ||
1052 | case CPP_OPEN_BRACE: | |
1053 | /* If it the next token is a '{', then we are entering a new | |
1054 | block. Consume the entire block. */ | |
1055 | ++nesting_depth; | |
1056 | break; | |
1057 | ||
1058 | case CPP_PRAGMA: | |
1059 | /* If we see a pragma, consume the whole thing at once. We | |
1060 | have some safeguards against consuming pragmas willy-nilly. | |
1061 | Normally, we'd expect to be here with parser->error set, | |
1062 | which disables these safeguards. But it's possible to get | |
1063 | here for secondary error recovery, after parser->error has | |
1064 | been cleared. */ | |
1065 | c_parser_consume_pragma (parser); | |
1066 | c_parser_skip_to_pragma_eol (parser); | |
1067 | parser->error = save_error; | |
1068 | continue; | |
9e33de05 RS |
1069 | |
1070 | default: | |
1071 | break; | |
2a83cc52 RH |
1072 | } |
1073 | ||
1074 | c_parser_consume_token (parser); | |
1075 | } | |
1076 | ||
1077 | finished: | |
1078 | parser->error = false; | |
1079 | } | |
1080 | ||
d2e796ad MLI |
1081 | /* CPP's options (initialized by c-opts.c). */ |
1082 | extern cpp_options *cpp_opts; | |
1083 | ||
27bf414c JM |
1084 | /* Save the warning flags which are controlled by __extension__. */ |
1085 | ||
1086 | static inline int | |
1087 | disable_extension_diagnostics (void) | |
1088 | { | |
1089 | int ret = (pedantic | |
1090 | | (warn_pointer_arith << 1) | |
1091 | | (warn_traditional << 2) | |
d2e796ad | 1092 | | (flag_iso << 3) |
24b97832 | 1093 | | (warn_long_long << 4) |
b3ab9ea2 | 1094 | | (warn_cxx_compat << 5) |
f3bede71 | 1095 | | (warn_overlength_strings << 6) |
177cce46 MP |
1096 | /* warn_c90_c99_compat has three states: -1/0/1, so we must |
1097 | play tricks to properly restore it. */ | |
1098 | | ((warn_c90_c99_compat == 1) << 7) | |
35aff4fb MP |
1099 | | ((warn_c90_c99_compat == -1) << 8) |
1100 | /* Similarly for warn_c99_c11_compat. */ | |
1101 | | ((warn_c99_c11_compat == 1) << 9) | |
1102 | | ((warn_c99_c11_compat == -1) << 10) | |
1103 | ); | |
e3339d0f | 1104 | cpp_opts->cpp_pedantic = pedantic = 0; |
27bf414c | 1105 | warn_pointer_arith = 0; |
e3339d0f | 1106 | cpp_opts->cpp_warn_traditional = warn_traditional = 0; |
27bf414c | 1107 | flag_iso = 0; |
e3339d0f | 1108 | cpp_opts->cpp_warn_long_long = warn_long_long = 0; |
24b97832 | 1109 | warn_cxx_compat = 0; |
b3ab9ea2 | 1110 | warn_overlength_strings = 0; |
f3bede71 | 1111 | warn_c90_c99_compat = 0; |
35aff4fb | 1112 | warn_c99_c11_compat = 0; |
27bf414c JM |
1113 | return ret; |
1114 | } | |
1115 | ||
1116 | /* Restore the warning flags which are controlled by __extension__. | |
1117 | FLAGS is the return value from disable_extension_diagnostics. */ | |
1118 | ||
1119 | static inline void | |
1120 | restore_extension_diagnostics (int flags) | |
1121 | { | |
e3339d0f | 1122 | cpp_opts->cpp_pedantic = pedantic = flags & 1; |
27bf414c | 1123 | warn_pointer_arith = (flags >> 1) & 1; |
e3339d0f | 1124 | cpp_opts->cpp_warn_traditional = warn_traditional = (flags >> 2) & 1; |
27bf414c | 1125 | flag_iso = (flags >> 3) & 1; |
e3339d0f | 1126 | cpp_opts->cpp_warn_long_long = warn_long_long = (flags >> 4) & 1; |
24b97832 | 1127 | warn_cxx_compat = (flags >> 5) & 1; |
b3ab9ea2 | 1128 | warn_overlength_strings = (flags >> 6) & 1; |
177cce46 MP |
1129 | /* See above for why is this needed. */ |
1130 | warn_c90_c99_compat = (flags >> 7) & 1 ? 1 : ((flags >> 8) & 1 ? -1 : 0); | |
35aff4fb | 1131 | warn_c99_c11_compat = (flags >> 9) & 1 ? 1 : ((flags >> 10) & 1 ? -1 : 0); |
27bf414c JM |
1132 | } |
1133 | ||
1134 | /* Possibly kinds of declarator to parse. */ | |
1135 | typedef enum c_dtr_syn { | |
1136 | /* A normal declarator with an identifier. */ | |
1137 | C_DTR_NORMAL, | |
1138 | /* An abstract declarator (maybe empty). */ | |
1139 | C_DTR_ABSTRACT, | |
1140 | /* A parameter declarator: may be either, but after a type name does | |
1141 | not redeclare a typedef name as an identifier if it can | |
1142 | alternatively be interpreted as a typedef name; see DR#009, | |
1143 | applied in C90 TC1, omitted from C99 and reapplied in C99 TC2 | |
1144 | following DR#249. For example, given a typedef T, "int T" and | |
1145 | "int *T" are valid parameter declarations redeclaring T, while | |
1146 | "int (T)" and "int * (T)" and "int (T[])" and "int (T (int))" are | |
1147 | abstract declarators rather than involving redundant parentheses; | |
1148 | the same applies with attributes inside the parentheses before | |
1149 | "T". */ | |
1150 | C_DTR_PARM | |
1151 | } c_dtr_syn; | |
1152 | ||
20906c66 JJ |
1153 | /* The binary operation precedence levels, where 0 is a dummy lowest level |
1154 | used for the bottom of the stack. */ | |
1155 | enum c_parser_prec { | |
1156 | PREC_NONE, | |
1157 | PREC_LOGOR, | |
1158 | PREC_LOGAND, | |
1159 | PREC_BITOR, | |
1160 | PREC_BITXOR, | |
1161 | PREC_BITAND, | |
1162 | PREC_EQ, | |
1163 | PREC_REL, | |
1164 | PREC_SHIFT, | |
1165 | PREC_ADD, | |
1166 | PREC_MULT, | |
1167 | NUM_PRECS | |
1168 | }; | |
1169 | ||
27bf414c JM |
1170 | static void c_parser_external_declaration (c_parser *); |
1171 | static void c_parser_asm_definition (c_parser *); | |
32912286 | 1172 | static void c_parser_declaration_or_fndef (c_parser *, bool, bool, bool, |
acf0174b | 1173 | bool, bool, tree *, vec<c_token>); |
32912286 JM |
1174 | static void c_parser_static_assert_declaration_no_semi (c_parser *); |
1175 | static void c_parser_static_assert_declaration (c_parser *); | |
27bf414c | 1176 | static void c_parser_declspecs (c_parser *, struct c_declspecs *, bool, bool, |
38b7bc7f | 1177 | bool, bool, bool, enum c_lookahead_kind); |
27bf414c JM |
1178 | static struct c_typespec c_parser_enum_specifier (c_parser *); |
1179 | static struct c_typespec c_parser_struct_or_union_specifier (c_parser *); | |
1180 | static tree c_parser_struct_declaration (c_parser *); | |
1181 | static struct c_typespec c_parser_typeof_specifier (c_parser *); | |
d19fa6b5 | 1182 | static tree c_parser_alignas_specifier (c_parser *); |
27bf414c JM |
1183 | static struct c_declarator *c_parser_declarator (c_parser *, bool, c_dtr_syn, |
1184 | bool *); | |
1185 | static struct c_declarator *c_parser_direct_declarator (c_parser *, bool, | |
1186 | c_dtr_syn, bool *); | |
1187 | static struct c_declarator *c_parser_direct_declarator_inner (c_parser *, | |
1188 | bool, | |
1189 | struct c_declarator *); | |
1190 | static struct c_arg_info *c_parser_parms_declarator (c_parser *, bool, tree); | |
a04a722b JM |
1191 | static struct c_arg_info *c_parser_parms_list_declarator (c_parser *, tree, |
1192 | tree); | |
27bf414c JM |
1193 | static struct c_parm *c_parser_parameter_declaration (c_parser *, tree); |
1194 | static tree c_parser_simple_asm_expr (c_parser *); | |
1195 | static tree c_parser_attributes (c_parser *); | |
1196 | static struct c_type_name *c_parser_type_name (c_parser *); | |
1197 | static struct c_expr c_parser_initializer (c_parser *); | |
1198 | static struct c_expr c_parser_braced_init (c_parser *, tree, bool); | |
a1e3b3d9 LB |
1199 | static void c_parser_initelt (c_parser *, struct obstack *); |
1200 | static void c_parser_initval (c_parser *, struct c_expr *, | |
1201 | struct obstack *); | |
27bf414c JM |
1202 | static tree c_parser_compound_statement (c_parser *); |
1203 | static void c_parser_compound_statement_nostart (c_parser *); | |
1204 | static void c_parser_label (c_parser *); | |
1205 | static void c_parser_statement (c_parser *); | |
1206 | static void c_parser_statement_after_labels (c_parser *); | |
1207 | static void c_parser_if_statement (c_parser *); | |
1208 | static void c_parser_switch_statement (c_parser *); | |
d4af74d4 TB |
1209 | static void c_parser_while_statement (c_parser *, bool); |
1210 | static void c_parser_do_statement (c_parser *, bool); | |
8170608b | 1211 | static void c_parser_for_statement (c_parser *, bool); |
27bf414c | 1212 | static tree c_parser_asm_statement (c_parser *); |
eadd3d0d | 1213 | static tree c_parser_asm_operands (c_parser *); |
1c384bf1 | 1214 | static tree c_parser_asm_goto_operands (c_parser *); |
27bf414c | 1215 | static tree c_parser_asm_clobbers (c_parser *); |
acf0174b JJ |
1216 | static struct c_expr c_parser_expr_no_commas (c_parser *, struct c_expr *, |
1217 | tree = NULL_TREE); | |
27bf414c | 1218 | static struct c_expr c_parser_conditional_expression (c_parser *, |
acf0174b | 1219 | struct c_expr *, tree); |
20906c66 | 1220 | static struct c_expr c_parser_binary_expression (c_parser *, struct c_expr *, |
acf0174b | 1221 | tree); |
27bf414c JM |
1222 | static struct c_expr c_parser_cast_expression (c_parser *, struct c_expr *); |
1223 | static struct c_expr c_parser_unary_expression (c_parser *); | |
1224 | static struct c_expr c_parser_sizeof_expression (c_parser *); | |
1225 | static struct c_expr c_parser_alignof_expression (c_parser *); | |
1226 | static struct c_expr c_parser_postfix_expression (c_parser *); | |
1227 | static struct c_expr c_parser_postfix_expression_after_paren_type (c_parser *, | |
24b97832 ILT |
1228 | struct c_type_name *, |
1229 | location_t); | |
27bf414c | 1230 | static struct c_expr c_parser_postfix_expression_after_primary (c_parser *, |
c2255bc4 | 1231 | location_t loc, |
27bf414c | 1232 | struct c_expr); |
0a35513e AH |
1233 | static tree c_parser_transaction (c_parser *, enum rid); |
1234 | static struct c_expr c_parser_transaction_expression (c_parser *, enum rid); | |
1235 | static tree c_parser_transaction_cancel (c_parser *); | |
27bf414c | 1236 | static struct c_expr c_parser_expression (c_parser *); |
46bdb9cf | 1237 | static struct c_expr c_parser_expression_conv (c_parser *); |
9771b263 DN |
1238 | static vec<tree, va_gc> *c_parser_expr_list (c_parser *, bool, bool, |
1239 | vec<tree, va_gc> **, location_t *, | |
b108f48f JJ |
1240 | tree *, vec<location_t> *, |
1241 | unsigned int * = NULL); | |
953ff289 DN |
1242 | static void c_parser_omp_construct (c_parser *); |
1243 | static void c_parser_omp_threadprivate (c_parser *); | |
1244 | static void c_parser_omp_barrier (c_parser *); | |
1245 | static void c_parser_omp_flush (c_parser *); | |
a68ab351 | 1246 | static void c_parser_omp_taskwait (c_parser *); |
20906c66 | 1247 | static void c_parser_omp_taskyield (c_parser *); |
acf0174b JJ |
1248 | static void c_parser_omp_cancel (c_parser *); |
1249 | static void c_parser_omp_cancellation_point (c_parser *); | |
27bf414c | 1250 | |
acf0174b JJ |
1251 | enum pragma_context { pragma_external, pragma_struct, pragma_param, |
1252 | pragma_stmt, pragma_compound }; | |
bc4071dd | 1253 | static bool c_parser_pragma (c_parser *, enum pragma_context); |
acf0174b JJ |
1254 | static bool c_parser_omp_target (c_parser *, enum pragma_context); |
1255 | static void c_parser_omp_end_declare_target (c_parser *); | |
1256 | static void c_parser_omp_declare (c_parser *, enum pragma_context); | |
bc4071dd | 1257 | |
27bf414c JM |
1258 | /* These Objective-C parser functions are only ever called when |
1259 | compiling Objective-C. */ | |
c165dca7 | 1260 | static void c_parser_objc_class_definition (c_parser *, tree); |
27bf414c JM |
1261 | static void c_parser_objc_class_instance_variables (c_parser *); |
1262 | static void c_parser_objc_class_declaration (c_parser *); | |
1263 | static void c_parser_objc_alias_declaration (c_parser *); | |
c165dca7 | 1264 | static void c_parser_objc_protocol_definition (c_parser *, tree); |
249a82c4 | 1265 | static bool c_parser_objc_method_type (c_parser *); |
27bf414c JM |
1266 | static void c_parser_objc_method_definition (c_parser *); |
1267 | static void c_parser_objc_methodprotolist (c_parser *); | |
1268 | static void c_parser_objc_methodproto (c_parser *); | |
a04a722b | 1269 | static tree c_parser_objc_method_decl (c_parser *, bool, tree *, tree *); |
27bf414c JM |
1270 | static tree c_parser_objc_type_name (c_parser *); |
1271 | static tree c_parser_objc_protocol_refs (c_parser *); | |
437c2322 | 1272 | static void c_parser_objc_try_catch_finally_statement (c_parser *); |
27bf414c JM |
1273 | static void c_parser_objc_synchronized_statement (c_parser *); |
1274 | static tree c_parser_objc_selector (c_parser *); | |
1275 | static tree c_parser_objc_selector_arg (c_parser *); | |
1276 | static tree c_parser_objc_receiver (c_parser *); | |
1277 | static tree c_parser_objc_message_args (c_parser *); | |
1278 | static tree c_parser_objc_keywordexpr (c_parser *); | |
f614132b | 1279 | static void c_parser_objc_at_property_declaration (c_parser *); |
da57d1b9 NP |
1280 | static void c_parser_objc_at_synthesize_declaration (c_parser *); |
1281 | static void c_parser_objc_at_dynamic_declaration (c_parser *); | |
668ea4b1 | 1282 | static bool c_parser_objc_diagnose_bad_element_prefix |
c165dca7 | 1283 | (c_parser *, struct c_declspecs *); |
27bf414c | 1284 | |
c02065fc AH |
1285 | /* Cilk Plus supporting routines. */ |
1286 | static void c_parser_cilk_simd (c_parser *); | |
9a771876 | 1287 | static void c_parser_cilk_for (c_parser *, tree); |
c02065fc | 1288 | static bool c_parser_cilk_verify_simd (c_parser *, enum pragma_context); |
36536d79 | 1289 | static tree c_parser_array_notation (location_t, c_parser *, tree, tree); |
41958c28 | 1290 | static tree c_parser_cilk_clause_vectorlength (c_parser *, tree, bool); |
9a771876 | 1291 | static void c_parser_cilk_grainsize (c_parser *); |
36536d79 | 1292 | |
27bf414c JM |
1293 | /* Parse a translation unit (C90 6.7, C99 6.9). |
1294 | ||
1295 | translation-unit: | |
1296 | external-declarations | |
1297 | ||
1298 | external-declarations: | |
1299 | external-declaration | |
1300 | external-declarations external-declaration | |
1301 | ||
1302 | GNU extensions: | |
1303 | ||
1304 | translation-unit: | |
1305 | empty | |
1306 | */ | |
1307 | ||
1308 | static void | |
1309 | c_parser_translation_unit (c_parser *parser) | |
1310 | { | |
1311 | if (c_parser_next_token_is (parser, CPP_EOF)) | |
1312 | { | |
c1771a20 | 1313 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 1314 | "ISO C forbids an empty translation unit"); |
27bf414c JM |
1315 | } |
1316 | else | |
1317 | { | |
1318 | void *obstack_position = obstack_alloc (&parser_obstack, 0); | |
6ec637a4 | 1319 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
1320 | do |
1321 | { | |
1322 | ggc_collect (); | |
1323 | c_parser_external_declaration (parser); | |
1324 | obstack_free (&parser_obstack, obstack_position); | |
1325 | } | |
1326 | while (c_parser_next_token_is_not (parser, CPP_EOF)); | |
1327 | } | |
1328 | } | |
1329 | ||
1330 | /* Parse an external declaration (C90 6.7, C99 6.9). | |
1331 | ||
1332 | external-declaration: | |
1333 | function-definition | |
1334 | declaration | |
1335 | ||
1336 | GNU extensions: | |
1337 | ||
1338 | external-declaration: | |
1339 | asm-definition | |
1340 | ; | |
1341 | __extension__ external-declaration | |
1342 | ||
1343 | Objective-C: | |
1344 | ||
1345 | external-declaration: | |
1346 | objc-class-definition | |
1347 | objc-class-declaration | |
1348 | objc-alias-declaration | |
1349 | objc-protocol-definition | |
1350 | objc-method-definition | |
1351 | @end | |
1352 | */ | |
1353 | ||
1354 | static void | |
1355 | c_parser_external_declaration (c_parser *parser) | |
1356 | { | |
1357 | int ext; | |
1358 | switch (c_parser_peek_token (parser)->type) | |
1359 | { | |
1360 | case CPP_KEYWORD: | |
1361 | switch (c_parser_peek_token (parser)->keyword) | |
1362 | { | |
1363 | case RID_EXTENSION: | |
1364 | ext = disable_extension_diagnostics (); | |
1365 | c_parser_consume_token (parser); | |
1366 | c_parser_external_declaration (parser); | |
1367 | restore_extension_diagnostics (ext); | |
1368 | break; | |
1369 | case RID_ASM: | |
1370 | c_parser_asm_definition (parser); | |
1371 | break; | |
1372 | case RID_AT_INTERFACE: | |
1373 | case RID_AT_IMPLEMENTATION: | |
1374 | gcc_assert (c_dialect_objc ()); | |
c165dca7 | 1375 | c_parser_objc_class_definition (parser, NULL_TREE); |
27bf414c | 1376 | break; |
49b91f05 | 1377 | case RID_AT_CLASS: |
27bf414c JM |
1378 | gcc_assert (c_dialect_objc ()); |
1379 | c_parser_objc_class_declaration (parser); | |
1380 | break; | |
1381 | case RID_AT_ALIAS: | |
1382 | gcc_assert (c_dialect_objc ()); | |
1383 | c_parser_objc_alias_declaration (parser); | |
1384 | break; | |
1385 | case RID_AT_PROTOCOL: | |
1386 | gcc_assert (c_dialect_objc ()); | |
c165dca7 | 1387 | c_parser_objc_protocol_definition (parser, NULL_TREE); |
27bf414c | 1388 | break; |
668ea4b1 IS |
1389 | case RID_AT_PROPERTY: |
1390 | gcc_assert (c_dialect_objc ()); | |
f614132b | 1391 | c_parser_objc_at_property_declaration (parser); |
668ea4b1 | 1392 | break; |
da57d1b9 NP |
1393 | case RID_AT_SYNTHESIZE: |
1394 | gcc_assert (c_dialect_objc ()); | |
1395 | c_parser_objc_at_synthesize_declaration (parser); | |
1396 | break; | |
1397 | case RID_AT_DYNAMIC: | |
1398 | gcc_assert (c_dialect_objc ()); | |
1399 | c_parser_objc_at_dynamic_declaration (parser); | |
1400 | break; | |
27bf414c JM |
1401 | case RID_AT_END: |
1402 | gcc_assert (c_dialect_objc ()); | |
1403 | c_parser_consume_token (parser); | |
1404 | objc_finish_implementation (); | |
1405 | break; | |
1406 | default: | |
1407 | goto decl_or_fndef; | |
1408 | } | |
1409 | break; | |
1410 | case CPP_SEMICOLON: | |
c1771a20 | 1411 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 1412 | "ISO C does not allow extra %<;%> outside of a function"); |
27bf414c JM |
1413 | c_parser_consume_token (parser); |
1414 | break; | |
bc4071dd | 1415 | case CPP_PRAGMA: |
6ec637a4 | 1416 | mark_valid_location_for_stdc_pragma (true); |
bc4071dd | 1417 | c_parser_pragma (parser, pragma_external); |
6ec637a4 | 1418 | mark_valid_location_for_stdc_pragma (false); |
bc4071dd | 1419 | break; |
27bf414c JM |
1420 | case CPP_PLUS: |
1421 | case CPP_MINUS: | |
1422 | if (c_dialect_objc ()) | |
1423 | { | |
1424 | c_parser_objc_method_definition (parser); | |
1425 | break; | |
1426 | } | |
1427 | /* Else fall through, and yield a syntax error trying to parse | |
1428 | as a declaration or function definition. */ | |
1429 | default: | |
1430 | decl_or_fndef: | |
c165dca7 IS |
1431 | /* A declaration or a function definition (or, in Objective-C, |
1432 | an @interface or @protocol with prefix attributes). We can | |
1433 | only tell which after parsing the declaration specifiers, if | |
1434 | any, and the first declarator. */ | |
acf0174b JJ |
1435 | c_parser_declaration_or_fndef (parser, true, true, true, false, true, |
1436 | NULL, vNULL); | |
27bf414c JM |
1437 | break; |
1438 | } | |
1439 | } | |
1440 | ||
acf0174b JJ |
1441 | static void c_finish_omp_declare_simd (c_parser *, tree, tree, vec<c_token>); |
1442 | ||
27bf414c JM |
1443 | /* Parse a declaration or function definition (C90 6.5, 6.7.1, C99 |
1444 | 6.7, 6.9.1). If FNDEF_OK is true, a function definition is | |
1445 | accepted; otherwise (old-style parameter declarations) only other | |
32912286 JM |
1446 | declarations are accepted. If STATIC_ASSERT_OK is true, a static |
1447 | assertion is accepted; otherwise (old-style parameter declarations) | |
1448 | it is not. If NESTED is true, we are inside a function or parsing | |
1449 | old-style parameter declarations; any functions encountered are | |
1450 | nested functions and declaration specifiers are required; otherwise | |
1451 | we are at top level and functions are normal functions and | |
1452 | declaration specifiers may be optional. If EMPTY_OK is true, empty | |
1453 | declarations are OK (subject to all other constraints); otherwise | |
1454 | (old-style parameter declarations) they are diagnosed. If | |
1455 | START_ATTR_OK is true, the declaration specifiers may start with | |
1456 | attributes; otherwise they may not. | |
f05b9d93 NP |
1457 | OBJC_FOREACH_OBJECT_DECLARATION can be used to get back the parsed |
1458 | declaration when parsing an Objective-C foreach statement. | |
27bf414c JM |
1459 | |
1460 | declaration: | |
1461 | declaration-specifiers init-declarator-list[opt] ; | |
32912286 | 1462 | static_assert-declaration |
27bf414c JM |
1463 | |
1464 | function-definition: | |
1465 | declaration-specifiers[opt] declarator declaration-list[opt] | |
1466 | compound-statement | |
1467 | ||
1468 | declaration-list: | |
1469 | declaration | |
1470 | declaration-list declaration | |
1471 | ||
1472 | init-declarator-list: | |
1473 | init-declarator | |
1474 | init-declarator-list , init-declarator | |
1475 | ||
1476 | init-declarator: | |
1477 | declarator simple-asm-expr[opt] attributes[opt] | |
1478 | declarator simple-asm-expr[opt] attributes[opt] = initializer | |
1479 | ||
1480 | GNU extensions: | |
1481 | ||
1482 | nested-function-definition: | |
1483 | declaration-specifiers declarator declaration-list[opt] | |
1484 | compound-statement | |
1485 | ||
c165dca7 IS |
1486 | Objective-C: |
1487 | attributes objc-class-definition | |
1488 | attributes objc-category-definition | |
1489 | attributes objc-protocol-definition | |
1490 | ||
27bf414c JM |
1491 | The simple-asm-expr and attributes are GNU extensions. |
1492 | ||
1493 | This function does not handle __extension__; that is handled in its | |
1494 | callers. ??? Following the old parser, __extension__ may start | |
1495 | external declarations, declarations in functions and declarations | |
1496 | at the start of "for" loops, but not old-style parameter | |
1497 | declarations. | |
1498 | ||
1499 | C99 requires declaration specifiers in a function definition; the | |
1500 | absence is diagnosed through the diagnosis of implicit int. In GNU | |
1501 | C we also allow but diagnose declarations without declaration | |
1502 | specifiers, but only at top level (elsewhere they conflict with | |
953ff289 | 1503 | other syntax). |
b8698a0f | 1504 | |
f05b9d93 NP |
1505 | In Objective-C, declarations of the looping variable in a foreach |
1506 | statement are exceptionally terminated by 'in' (for example, 'for | |
1507 | (NSObject *object in array) { ... }'). | |
1508 | ||
953ff289 | 1509 | OpenMP: |
b8698a0f | 1510 | |
953ff289 DN |
1511 | declaration: |
1512 | threadprivate-directive */ | |
27bf414c JM |
1513 | |
1514 | static void | |
32912286 JM |
1515 | c_parser_declaration_or_fndef (c_parser *parser, bool fndef_ok, |
1516 | bool static_assert_ok, bool empty_ok, | |
f05b9d93 | 1517 | bool nested, bool start_attr_ok, |
acf0174b JJ |
1518 | tree *objc_foreach_object_declaration, |
1519 | vec<c_token> omp_declare_simd_clauses) | |
27bf414c JM |
1520 | { |
1521 | struct c_declspecs *specs; | |
1522 | tree prefix_attrs; | |
1523 | tree all_prefix_attrs; | |
1524 | bool diagnosed_no_specs = false; | |
c7412148 | 1525 | location_t here = c_parser_peek_token (parser)->location; |
bc4071dd | 1526 | |
32912286 JM |
1527 | if (static_assert_ok |
1528 | && c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)) | |
1529 | { | |
1530 | c_parser_static_assert_declaration (parser); | |
1531 | return; | |
1532 | } | |
27bf414c | 1533 | specs = build_null_declspecs (); |
2f413185 PB |
1534 | |
1535 | /* Try to detect an unknown type name when we have "A B" or "A *B". */ | |
1536 | if (c_parser_peek_token (parser)->type == CPP_NAME | |
1537 | && c_parser_peek_token (parser)->id_kind == C_ID_ID | |
1538 | && (c_parser_peek_2nd_token (parser)->type == CPP_NAME | |
1539 | || c_parser_peek_2nd_token (parser)->type == CPP_MULT) | |
1540 | && (!nested || !lookup_name (c_parser_peek_token (parser)->value))) | |
1541 | { | |
1542 | error_at (here, "unknown type name %qE", | |
1543 | c_parser_peek_token (parser)->value); | |
1544 | ||
1545 | /* Parse declspecs normally to get a correct pointer type, but avoid | |
a5812bdc PB |
1546 | a further "fails to be a type name" error. Refuse nested functions |
1547 | since it is not how the user likely wants us to recover. */ | |
2f413185 PB |
1548 | c_parser_peek_token (parser)->type = CPP_KEYWORD; |
1549 | c_parser_peek_token (parser)->keyword = RID_VOID; | |
1550 | c_parser_peek_token (parser)->value = error_mark_node; | |
a5812bdc | 1551 | fndef_ok = !nested; |
2f413185 PB |
1552 | } |
1553 | ||
568a31f2 | 1554 | c_parser_declspecs (parser, specs, true, true, start_attr_ok, |
38b7bc7f | 1555 | true, true, cla_nonabstract_decl); |
27bf414c JM |
1556 | if (parser->error) |
1557 | { | |
1558 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1559 | return; | |
1560 | } | |
1561 | if (nested && !specs->declspecs_seen_p) | |
1562 | { | |
1563 | c_parser_error (parser, "expected declaration specifiers"); | |
1564 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1565 | return; | |
1566 | } | |
1567 | finish_declspecs (specs); | |
38b7bc7f | 1568 | bool auto_type_p = specs->typespec_word == cts_auto_type; |
27bf414c JM |
1569 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
1570 | { | |
38b7bc7f JM |
1571 | if (auto_type_p) |
1572 | error_at (here, "%<__auto_type%> in empty declaration"); | |
1573 | else if (empty_ok) | |
27bf414c JM |
1574 | shadow_tag (specs); |
1575 | else | |
1576 | { | |
1577 | shadow_tag_warned (specs, 1); | |
509c9d60 | 1578 | pedwarn (here, 0, "empty declaration"); |
27bf414c JM |
1579 | } |
1580 | c_parser_consume_token (parser); | |
1581 | return; | |
1582 | } | |
f725e721 PB |
1583 | |
1584 | /* Provide better error recovery. Note that a type name here is usually | |
1585 | better diagnosed as a redeclaration. */ | |
1586 | if (empty_ok | |
1587 | && specs->typespec_kind == ctsk_tagdef | |
1588 | && c_parser_next_token_starts_declspecs (parser) | |
1589 | && !c_parser_next_token_is (parser, CPP_NAME)) | |
1590 | { | |
1591 | c_parser_error (parser, "expected %<;%>, identifier or %<(%>"); | |
1592 | parser->error = false; | |
1593 | shadow_tag_warned (specs, 1); | |
1594 | return; | |
1595 | } | |
38b7bc7f | 1596 | else if (c_dialect_objc () && !auto_type_p) |
c165dca7 | 1597 | { |
f7e71da5 IS |
1598 | /* Prefix attributes are an error on method decls. */ |
1599 | switch (c_parser_peek_token (parser)->type) | |
1600 | { | |
1601 | case CPP_PLUS: | |
1602 | case CPP_MINUS: | |
1603 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1604 | return; | |
1605 | if (specs->attrs) | |
1606 | { | |
1607 | warning_at (c_parser_peek_token (parser)->location, | |
1608 | OPT_Wattributes, | |
1609 | "prefix attributes are ignored for methods"); | |
1610 | specs->attrs = NULL_TREE; | |
1611 | } | |
1612 | if (fndef_ok) | |
1613 | c_parser_objc_method_definition (parser); | |
1614 | else | |
1615 | c_parser_objc_methodproto (parser); | |
1616 | return; | |
1617 | break; | |
1618 | default: | |
1619 | break; | |
1620 | } | |
c165dca7 IS |
1621 | /* This is where we parse 'attributes @interface ...', |
1622 | 'attributes @implementation ...', 'attributes @protocol ...' | |
1623 | (where attributes could be, for example, __attribute__ | |
1624 | ((deprecated)). | |
1625 | */ | |
1626 | switch (c_parser_peek_token (parser)->keyword) | |
1627 | { | |
1628 | case RID_AT_INTERFACE: | |
1629 | { | |
1630 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1631 | return; | |
1632 | c_parser_objc_class_definition (parser, specs->attrs); | |
1633 | return; | |
1634 | } | |
1635 | break; | |
1636 | case RID_AT_IMPLEMENTATION: | |
1637 | { | |
1638 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1639 | return; | |
1640 | if (specs->attrs) | |
1641 | { | |
1642 | warning_at (c_parser_peek_token (parser)->location, | |
1643 | OPT_Wattributes, | |
1644 | "prefix attributes are ignored for implementations"); | |
1645 | specs->attrs = NULL_TREE; | |
1646 | } | |
1647 | c_parser_objc_class_definition (parser, NULL_TREE); | |
1648 | return; | |
1649 | } | |
1650 | break; | |
1651 | case RID_AT_PROTOCOL: | |
1652 | { | |
1653 | if (c_parser_objc_diagnose_bad_element_prefix (parser, specs)) | |
1654 | return; | |
1655 | c_parser_objc_protocol_definition (parser, specs->attrs); | |
1656 | return; | |
1657 | } | |
1658 | break; | |
668ea4b1 IS |
1659 | case RID_AT_ALIAS: |
1660 | case RID_AT_CLASS: | |
1661 | case RID_AT_END: | |
1662 | case RID_AT_PROPERTY: | |
1663 | if (specs->attrs) | |
1664 | { | |
96bbfbac | 1665 | c_parser_error (parser, "unexpected attribute"); |
668ea4b1 IS |
1666 | specs->attrs = NULL; |
1667 | } | |
1668 | break; | |
c165dca7 IS |
1669 | default: |
1670 | break; | |
1671 | } | |
1672 | } | |
1673 | ||
27bf414c JM |
1674 | pending_xref_error (); |
1675 | prefix_attrs = specs->attrs; | |
1676 | all_prefix_attrs = prefix_attrs; | |
1677 | specs->attrs = NULL_TREE; | |
1678 | while (true) | |
1679 | { | |
1680 | struct c_declarator *declarator; | |
1681 | bool dummy = false; | |
575bfb00 | 1682 | timevar_id_t tv; |
27bf414c JM |
1683 | tree fnbody; |
1684 | /* Declaring either one or more declarators (in which case we | |
1685 | should diagnose if there were no declaration specifiers) or a | |
1686 | function definition (in which case the diagnostic for | |
1687 | implicit int suffices). */ | |
9e5b2115 PB |
1688 | declarator = c_parser_declarator (parser, |
1689 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
1690 | C_DTR_NORMAL, &dummy); |
1691 | if (declarator == NULL) | |
1692 | { | |
41958c28 BI |
1693 | if (omp_declare_simd_clauses.exists () |
1694 | || !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) | |
acf0174b JJ |
1695 | c_finish_omp_declare_simd (parser, NULL_TREE, NULL_TREE, |
1696 | omp_declare_simd_clauses); | |
27bf414c JM |
1697 | c_parser_skip_to_end_of_block_or_statement (parser); |
1698 | return; | |
1699 | } | |
38b7bc7f JM |
1700 | if (auto_type_p && declarator->kind != cdk_id) |
1701 | { | |
1702 | error_at (here, | |
1703 | "%<__auto_type%> requires a plain identifier" | |
1704 | " as declarator"); | |
1705 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1706 | return; | |
1707 | } | |
27bf414c JM |
1708 | if (c_parser_next_token_is (parser, CPP_EQ) |
1709 | || c_parser_next_token_is (parser, CPP_COMMA) | |
1710 | || c_parser_next_token_is (parser, CPP_SEMICOLON) | |
1711 | || c_parser_next_token_is_keyword (parser, RID_ASM) | |
f05b9d93 NP |
1712 | || c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE) |
1713 | || c_parser_next_token_is_keyword (parser, RID_IN)) | |
27bf414c JM |
1714 | { |
1715 | tree asm_name = NULL_TREE; | |
1716 | tree postfix_attrs = NULL_TREE; | |
1717 | if (!diagnosed_no_specs && !specs->declspecs_seen_p) | |
1718 | { | |
1719 | diagnosed_no_specs = true; | |
509c9d60 | 1720 | pedwarn (here, 0, "data definition has no type or storage class"); |
27bf414c JM |
1721 | } |
1722 | /* Having seen a data definition, there cannot now be a | |
1723 | function definition. */ | |
1724 | fndef_ok = false; | |
1725 | if (c_parser_next_token_is_keyword (parser, RID_ASM)) | |
1726 | asm_name = c_parser_simple_asm_expr (parser); | |
1727 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
ae5ebda4 MP |
1728 | { |
1729 | postfix_attrs = c_parser_attributes (parser); | |
1730 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
1731 | { | |
1732 | /* This means there is an attribute specifier after | |
1733 | the declarator in a function definition. Provide | |
1734 | some more information for the user. */ | |
1735 | error_at (here, "attributes should be specified before the " | |
1736 | "declarator in a function definition"); | |
1737 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1738 | return; | |
1739 | } | |
1740 | } | |
27bf414c JM |
1741 | if (c_parser_next_token_is (parser, CPP_EQ)) |
1742 | { | |
1743 | tree d; | |
1744 | struct c_expr init; | |
c2255bc4 | 1745 | location_t init_loc; |
27bf414c | 1746 | c_parser_consume_token (parser); |
38b7bc7f JM |
1747 | if (auto_type_p) |
1748 | { | |
1749 | start_init (NULL_TREE, asm_name, global_bindings_p ()); | |
1750 | init_loc = c_parser_peek_token (parser)->location; | |
1751 | init = c_parser_expr_no_commas (parser, NULL); | |
1752 | if (TREE_CODE (init.value) == COMPONENT_REF | |
1753 | && DECL_C_BIT_FIELD (TREE_OPERAND (init.value, 1))) | |
1754 | error_at (here, | |
1755 | "%<__auto_type%> used with a bit-field" | |
1756 | " initializer"); | |
1757 | init = convert_lvalue_to_rvalue (init_loc, init, true, true); | |
1758 | tree init_type = TREE_TYPE (init.value); | |
9698b078 | 1759 | /* As with typeof, remove all qualifiers from atomic types. */ |
38b7bc7f JM |
1760 | if (init_type != error_mark_node && TYPE_ATOMIC (init_type)) |
1761 | init_type | |
9698b078 | 1762 | = c_build_qualified_type (init_type, TYPE_UNQUALIFIED); |
38b7bc7f JM |
1763 | bool vm_type = variably_modified_type_p (init_type, |
1764 | NULL_TREE); | |
1765 | if (vm_type) | |
1766 | init.value = c_save_expr (init.value); | |
1767 | finish_init (); | |
1768 | specs->typespec_kind = ctsk_typeof; | |
1769 | specs->locations[cdw_typedef] = init_loc; | |
1770 | specs->typedef_p = true; | |
1771 | specs->type = init_type; | |
1772 | if (vm_type) | |
1773 | { | |
1774 | bool maybe_const = true; | |
1775 | tree type_expr = c_fully_fold (init.value, false, | |
1776 | &maybe_const); | |
1777 | specs->expr_const_operands &= maybe_const; | |
1778 | if (specs->expr) | |
1779 | specs->expr = build2 (COMPOUND_EXPR, | |
1780 | TREE_TYPE (type_expr), | |
1781 | specs->expr, type_expr); | |
1782 | else | |
1783 | specs->expr = type_expr; | |
1784 | } | |
1785 | d = start_decl (declarator, specs, true, | |
1786 | chainon (postfix_attrs, all_prefix_attrs)); | |
1787 | if (!d) | |
1788 | d = error_mark_node; | |
41958c28 BI |
1789 | if (omp_declare_simd_clauses.exists () |
1790 | || !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) | |
38b7bc7f JM |
1791 | c_finish_omp_declare_simd (parser, d, NULL_TREE, |
1792 | omp_declare_simd_clauses); | |
1793 | } | |
1794 | else | |
1795 | { | |
1796 | /* The declaration of the variable is in effect while | |
1797 | its initializer is parsed. */ | |
1798 | d = start_decl (declarator, specs, true, | |
1799 | chainon (postfix_attrs, all_prefix_attrs)); | |
1800 | if (!d) | |
1801 | d = error_mark_node; | |
41958c28 BI |
1802 | if (omp_declare_simd_clauses.exists () |
1803 | || !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) | |
38b7bc7f JM |
1804 | c_finish_omp_declare_simd (parser, d, NULL_TREE, |
1805 | omp_declare_simd_clauses); | |
1806 | start_init (d, asm_name, global_bindings_p ()); | |
1807 | init_loc = c_parser_peek_token (parser)->location; | |
1808 | init = c_parser_initializer (parser); | |
1809 | finish_init (); | |
1810 | } | |
27bf414c JM |
1811 | if (d != error_mark_node) |
1812 | { | |
d033409e | 1813 | maybe_warn_string_init (init_loc, TREE_TYPE (d), init); |
c2255bc4 | 1814 | finish_decl (d, init_loc, init.value, |
d033409e | 1815 | init.original_type, asm_name); |
27bf414c JM |
1816 | } |
1817 | } | |
1818 | else | |
1819 | { | |
38b7bc7f JM |
1820 | if (auto_type_p) |
1821 | { | |
1822 | error_at (here, | |
1823 | "%<__auto_type%> requires an initialized " | |
1824 | "data declaration"); | |
1825 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1826 | return; | |
1827 | } | |
27bf414c JM |
1828 | tree d = start_decl (declarator, specs, false, |
1829 | chainon (postfix_attrs, | |
1830 | all_prefix_attrs)); | |
41958c28 BI |
1831 | if (omp_declare_simd_clauses.exists () |
1832 | || !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) | |
acf0174b JJ |
1833 | { |
1834 | tree parms = NULL_TREE; | |
1835 | if (d && TREE_CODE (d) == FUNCTION_DECL) | |
1836 | { | |
1837 | struct c_declarator *ce = declarator; | |
1838 | while (ce != NULL) | |
1839 | if (ce->kind == cdk_function) | |
1840 | { | |
1841 | parms = ce->u.arg_info->parms; | |
1842 | break; | |
1843 | } | |
1844 | else | |
1845 | ce = ce->declarator; | |
1846 | } | |
1847 | if (parms) | |
1848 | temp_store_parm_decls (d, parms); | |
1849 | c_finish_omp_declare_simd (parser, d, parms, | |
1850 | omp_declare_simd_clauses); | |
1851 | if (parms) | |
1852 | temp_pop_parm_decls (); | |
1853 | } | |
27bf414c | 1854 | if (d) |
c2255bc4 | 1855 | finish_decl (d, UNKNOWN_LOCATION, NULL_TREE, |
f05b9d93 NP |
1856 | NULL_TREE, asm_name); |
1857 | ||
1858 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
1859 | { | |
1860 | if (d) | |
1861 | *objc_foreach_object_declaration = d; | |
1862 | else | |
1863 | *objc_foreach_object_declaration = error_mark_node; | |
1864 | } | |
27bf414c JM |
1865 | } |
1866 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
1867 | { | |
38b7bc7f JM |
1868 | if (auto_type_p) |
1869 | { | |
1870 | error_at (here, | |
1871 | "%<__auto_type%> may only be used with" | |
1872 | " a single declarator"); | |
1873 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1874 | return; | |
1875 | } | |
27bf414c JM |
1876 | c_parser_consume_token (parser); |
1877 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
1878 | all_prefix_attrs = chainon (c_parser_attributes (parser), | |
1879 | prefix_attrs); | |
1880 | else | |
1881 | all_prefix_attrs = prefix_attrs; | |
1882 | continue; | |
1883 | } | |
1884 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
1885 | { | |
1886 | c_parser_consume_token (parser); | |
1887 | return; | |
1888 | } | |
f05b9d93 NP |
1889 | else if (c_parser_next_token_is_keyword (parser, RID_IN)) |
1890 | { | |
1891 | /* This can only happen in Objective-C: we found the | |
1892 | 'in' that terminates the declaration inside an | |
1893 | Objective-C foreach statement. Do not consume the | |
1894 | token, so that the caller can use it to determine | |
1895 | that this indeed is a foreach context. */ | |
1896 | return; | |
1897 | } | |
27bf414c JM |
1898 | else |
1899 | { | |
1900 | c_parser_error (parser, "expected %<,%> or %<;%>"); | |
1901 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1902 | return; | |
1903 | } | |
1904 | } | |
38b7bc7f JM |
1905 | else if (auto_type_p) |
1906 | { | |
1907 | error_at (here, | |
1908 | "%<__auto_type%> requires an initialized data declaration"); | |
1909 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1910 | return; | |
1911 | } | |
27bf414c JM |
1912 | else if (!fndef_ok) |
1913 | { | |
1914 | c_parser_error (parser, "expected %<=%>, %<,%>, %<;%>, " | |
1915 | "%<asm%> or %<__attribute__%>"); | |
1916 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1917 | return; | |
1918 | } | |
1919 | /* Function definition (nested or otherwise). */ | |
1920 | if (nested) | |
1921 | { | |
c1771a20 | 1922 | pedwarn (here, OPT_Wpedantic, "ISO C forbids nested functions"); |
d2784db4 | 1923 | c_push_function_context (); |
27bf414c JM |
1924 | } |
1925 | if (!start_function (specs, declarator, all_prefix_attrs)) | |
1926 | { | |
1927 | /* This can appear in many cases looking nothing like a | |
1928 | function definition, so we don't give a more specific | |
1929 | error suggesting there was one. */ | |
1930 | c_parser_error (parser, "expected %<=%>, %<,%>, %<;%>, %<asm%> " | |
1931 | "or %<__attribute__%>"); | |
1932 | if (nested) | |
d2784db4 | 1933 | c_pop_function_context (); |
27bf414c JM |
1934 | break; |
1935 | } | |
575bfb00 LC |
1936 | |
1937 | if (DECL_DECLARED_INLINE_P (current_function_decl)) | |
1938 | tv = TV_PARSE_INLINE; | |
1939 | else | |
1940 | tv = TV_PARSE_FUNC; | |
1941 | timevar_push (tv); | |
1942 | ||
27bf414c JM |
1943 | /* Parse old-style parameter declarations. ??? Attributes are |
1944 | not allowed to start declaration specifiers here because of a | |
1945 | syntax conflict between a function declaration with attribute | |
1946 | suffix and a function definition with an attribute prefix on | |
1947 | first old-style parameter declaration. Following the old | |
1948 | parser, they are not accepted on subsequent old-style | |
1949 | parameter declarations either. However, there is no | |
1950 | ambiguity after the first declaration, nor indeed on the | |
1951 | first as long as we don't allow postfix attributes after a | |
1952 | declarator with a nonempty identifier list in a definition; | |
1953 | and postfix attributes have never been accepted here in | |
1954 | function definitions either. */ | |
1955 | while (c_parser_next_token_is_not (parser, CPP_EOF) | |
1956 | && c_parser_next_token_is_not (parser, CPP_OPEN_BRACE)) | |
32912286 | 1957 | c_parser_declaration_or_fndef (parser, false, false, false, |
acf0174b | 1958 | true, false, NULL, vNULL); |
27bf414c | 1959 | store_parm_decls (); |
41958c28 BI |
1960 | if (omp_declare_simd_clauses.exists () |
1961 | || !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) | |
acf0174b JJ |
1962 | c_finish_omp_declare_simd (parser, current_function_decl, NULL_TREE, |
1963 | omp_declare_simd_clauses); | |
1751ecd6 AH |
1964 | DECL_STRUCT_FUNCTION (current_function_decl)->function_start_locus |
1965 | = c_parser_peek_token (parser)->location; | |
27bf414c | 1966 | fnbody = c_parser_compound_statement (parser); |
b72271b9 | 1967 | if (flag_cilkplus && contains_array_notation_expr (fnbody)) |
25c22937 | 1968 | fnbody = expand_array_notation_exprs (fnbody); |
27bf414c JM |
1969 | if (nested) |
1970 | { | |
1971 | tree decl = current_function_decl; | |
9f62cb92 JJ |
1972 | /* Mark nested functions as needing static-chain initially. |
1973 | lower_nested_functions will recompute it but the | |
1974 | DECL_STATIC_CHAIN flag is also used before that happens, | |
1975 | by initializer_constant_valid_p. See gcc.dg/nested-fn-2.c. */ | |
1976 | DECL_STATIC_CHAIN (decl) = 1; | |
27bf414c JM |
1977 | add_stmt (fnbody); |
1978 | finish_function (); | |
d2784db4 | 1979 | c_pop_function_context (); |
c2255bc4 | 1980 | add_stmt (build_stmt (DECL_SOURCE_LOCATION (decl), DECL_EXPR, decl)); |
27bf414c JM |
1981 | } |
1982 | else | |
1983 | { | |
1984 | add_stmt (fnbody); | |
1985 | finish_function (); | |
1986 | } | |
575bfb00 LC |
1987 | |
1988 | timevar_pop (tv); | |
27bf414c JM |
1989 | break; |
1990 | } | |
1991 | } | |
1992 | ||
1993 | /* Parse an asm-definition (asm() outside a function body). This is a | |
1994 | GNU extension. | |
1995 | ||
1996 | asm-definition: | |
1997 | simple-asm-expr ; | |
1998 | */ | |
1999 | ||
2000 | static void | |
2001 | c_parser_asm_definition (c_parser *parser) | |
2002 | { | |
2003 | tree asm_str = c_parser_simple_asm_expr (parser); | |
27bf414c | 2004 | if (asm_str) |
3dafb85c | 2005 | symtab->finalize_toplevel_asm (asm_str); |
27bf414c JM |
2006 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
2007 | } | |
2008 | ||
48b0b196 | 2009 | /* Parse a static assertion (C11 6.7.10). |
32912286 JM |
2010 | |
2011 | static_assert-declaration: | |
2012 | static_assert-declaration-no-semi ; | |
2013 | */ | |
2014 | ||
2015 | static void | |
2016 | c_parser_static_assert_declaration (c_parser *parser) | |
2017 | { | |
2018 | c_parser_static_assert_declaration_no_semi (parser); | |
2019 | if (parser->error | |
2020 | || !c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) | |
2021 | c_parser_skip_to_end_of_block_or_statement (parser); | |
2022 | } | |
2023 | ||
48b0b196 | 2024 | /* Parse a static assertion (C11 6.7.10), without the trailing |
32912286 JM |
2025 | semicolon. |
2026 | ||
2027 | static_assert-declaration-no-semi: | |
2028 | _Static_assert ( constant-expression , string-literal ) | |
2029 | */ | |
2030 | ||
2031 | static void | |
2032 | c_parser_static_assert_declaration_no_semi (c_parser *parser) | |
2033 | { | |
2034 | location_t assert_loc, value_loc; | |
2035 | tree value; | |
2036 | tree string; | |
2037 | ||
2038 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)); | |
2039 | assert_loc = c_parser_peek_token (parser)->location; | |
35aff4fb MP |
2040 | if (flag_isoc99) |
2041 | pedwarn_c99 (assert_loc, OPT_Wpedantic, | |
32912286 | 2042 | "ISO C99 does not support %<_Static_assert%>"); |
35aff4fb MP |
2043 | else |
2044 | pedwarn_c99 (assert_loc, OPT_Wpedantic, | |
32912286 | 2045 | "ISO C90 does not support %<_Static_assert%>"); |
32912286 JM |
2046 | c_parser_consume_token (parser); |
2047 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
2048 | return; | |
2049 | value_loc = c_parser_peek_token (parser)->location; | |
2050 | value = c_parser_expr_no_commas (parser, NULL).value; | |
2051 | parser->lex_untranslated_string = true; | |
2052 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
2053 | { | |
2054 | parser->lex_untranslated_string = false; | |
2055 | return; | |
2056 | } | |
2057 | switch (c_parser_peek_token (parser)->type) | |
2058 | { | |
2059 | case CPP_STRING: | |
2060 | case CPP_STRING16: | |
2061 | case CPP_STRING32: | |
2062 | case CPP_WSTRING: | |
2063 | case CPP_UTF8STRING: | |
2064 | string = c_parser_peek_token (parser)->value; | |
2065 | c_parser_consume_token (parser); | |
2066 | parser->lex_untranslated_string = false; | |
2067 | break; | |
2068 | default: | |
2069 | c_parser_error (parser, "expected string literal"); | |
2070 | parser->lex_untranslated_string = false; | |
2071 | return; | |
2072 | } | |
2073 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
2074 | ||
2075 | if (!INTEGRAL_TYPE_P (TREE_TYPE (value))) | |
2076 | { | |
2077 | error_at (value_loc, "expression in static assertion is not an integer"); | |
2078 | return; | |
2079 | } | |
2080 | if (TREE_CODE (value) != INTEGER_CST) | |
2081 | { | |
2082 | value = c_fully_fold (value, false, NULL); | |
8d95fe25 MP |
2083 | /* Strip no-op conversions. */ |
2084 | STRIP_TYPE_NOPS (value); | |
32912286 | 2085 | if (TREE_CODE (value) == INTEGER_CST) |
c1771a20 | 2086 | pedwarn (value_loc, OPT_Wpedantic, "expression in static assertion " |
32912286 JM |
2087 | "is not an integer constant expression"); |
2088 | } | |
2089 | if (TREE_CODE (value) != INTEGER_CST) | |
2090 | { | |
2091 | error_at (value_loc, "expression in static assertion is not constant"); | |
2092 | return; | |
2093 | } | |
2094 | constant_expression_warning (value); | |
2095 | if (integer_zerop (value)) | |
2096 | error_at (assert_loc, "static assertion failed: %E", string); | |
2097 | } | |
2098 | ||
27bf414c JM |
2099 | /* Parse some declaration specifiers (possibly none) (C90 6.5, C99 |
2100 | 6.7), adding them to SPECS (which may already include some). | |
2101 | Storage class specifiers are accepted iff SCSPEC_OK; type | |
568a31f2 MP |
2102 | specifiers are accepted iff TYPESPEC_OK; alignment specifiers are |
2103 | accepted iff ALIGNSPEC_OK; attributes are accepted at the start | |
38b7bc7f | 2104 | iff START_ATTR_OK; __auto_type is accepted iff AUTO_TYPE_OK. |
27bf414c JM |
2105 | |
2106 | declaration-specifiers: | |
2107 | storage-class-specifier declaration-specifiers[opt] | |
2108 | type-specifier declaration-specifiers[opt] | |
2109 | type-qualifier declaration-specifiers[opt] | |
2110 | function-specifier declaration-specifiers[opt] | |
d19fa6b5 | 2111 | alignment-specifier declaration-specifiers[opt] |
27bf414c JM |
2112 | |
2113 | Function specifiers (inline) are from C99, and are currently | |
d19fa6b5 | 2114 | handled as storage class specifiers, as is __thread. Alignment |
48b0b196 | 2115 | specifiers are from C11. |
27bf414c JM |
2116 | |
2117 | C90 6.5.1, C99 6.7.1: | |
2118 | storage-class-specifier: | |
2119 | typedef | |
2120 | extern | |
2121 | static | |
2122 | auto | |
2123 | register | |
582d9b50 JM |
2124 | _Thread_local |
2125 | ||
2126 | (_Thread_local is new in C11.) | |
27bf414c JM |
2127 | |
2128 | C99 6.7.4: | |
2129 | function-specifier: | |
2130 | inline | |
c4b3a0a0 JM |
2131 | _Noreturn |
2132 | ||
48b0b196 | 2133 | (_Noreturn is new in C11.) |
27bf414c JM |
2134 | |
2135 | C90 6.5.2, C99 6.7.2: | |
2136 | type-specifier: | |
2137 | void | |
2138 | char | |
2139 | short | |
2140 | int | |
2141 | long | |
2142 | float | |
2143 | double | |
2144 | signed | |
2145 | unsigned | |
2146 | _Bool | |
2147 | _Complex | |
2148 | [_Imaginary removed in C99 TC2] | |
2149 | struct-or-union-specifier | |
2150 | enum-specifier | |
2151 | typedef-name | |
267bac10 | 2152 | atomic-type-specifier |
27bf414c JM |
2153 | |
2154 | (_Bool and _Complex are new in C99.) | |
267bac10 | 2155 | (atomic-type-specifier is new in C11.) |
27bf414c JM |
2156 | |
2157 | C90 6.5.3, C99 6.7.3: | |
2158 | ||
2159 | type-qualifier: | |
2160 | const | |
2161 | restrict | |
2162 | volatile | |
36c5e70a | 2163 | address-space-qualifier |
267bac10 | 2164 | _Atomic |
27bf414c JM |
2165 | |
2166 | (restrict is new in C99.) | |
267bac10 | 2167 | (_Atomic is new in C11.) |
27bf414c JM |
2168 | |
2169 | GNU extensions: | |
2170 | ||
2171 | declaration-specifiers: | |
2172 | attributes declaration-specifiers[opt] | |
2173 | ||
36c5e70a BE |
2174 | type-qualifier: |
2175 | address-space | |
2176 | ||
2177 | address-space: | |
2178 | identifier recognized by the target | |
2179 | ||
27bf414c JM |
2180 | storage-class-specifier: |
2181 | __thread | |
2182 | ||
2183 | type-specifier: | |
2184 | typeof-specifier | |
38b7bc7f | 2185 | __auto_type |
78a7c317 | 2186 | __intN |
9a8ce21f JG |
2187 | _Decimal32 |
2188 | _Decimal64 | |
2189 | _Decimal128 | |
ab22c1fa CF |
2190 | _Fract |
2191 | _Accum | |
2192 | _Sat | |
2193 | ||
2194 | (_Fract, _Accum, and _Sat are new from ISO/IEC DTR 18037: | |
2195 | http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1169.pdf) | |
27bf414c | 2196 | |
267bac10 JM |
2197 | atomic-type-specifier |
2198 | _Atomic ( type-name ) | |
2199 | ||
27bf414c JM |
2200 | Objective-C: |
2201 | ||
2202 | type-specifier: | |
2203 | class-name objc-protocol-refs[opt] | |
2204 | typedef-name objc-protocol-refs | |
2205 | objc-protocol-refs | |
2206 | */ | |
2207 | ||
2208 | static void | |
2209 | c_parser_declspecs (c_parser *parser, struct c_declspecs *specs, | |
29ce73cb | 2210 | bool scspec_ok, bool typespec_ok, bool start_attr_ok, |
38b7bc7f JM |
2211 | bool alignspec_ok, bool auto_type_ok, |
2212 | enum c_lookahead_kind la) | |
27bf414c JM |
2213 | { |
2214 | bool attrs_ok = start_attr_ok; | |
9e5b2115 | 2215 | bool seen_type = specs->typespec_kind != ctsk_none; |
29ce73cb PB |
2216 | |
2217 | if (!typespec_ok) | |
2218 | gcc_assert (la == cla_prefer_id); | |
2219 | ||
2220 | while (c_parser_next_token_is (parser, CPP_NAME) | |
27bf414c JM |
2221 | || c_parser_next_token_is (parser, CPP_KEYWORD) |
2222 | || (c_dialect_objc () && c_parser_next_token_is (parser, CPP_LESS))) | |
2223 | { | |
2224 | struct c_typespec t; | |
2225 | tree attrs; | |
d19fa6b5 | 2226 | tree align; |
dc491a25 | 2227 | location_t loc = c_parser_peek_token (parser)->location; |
f725e721 | 2228 | |
29ce73cb PB |
2229 | /* If we cannot accept a type, exit if the next token must start |
2230 | one. Also, if we already have seen a tagged definition, | |
2231 | a typename would be an error anyway and likely the user | |
2232 | has simply forgotten a semicolon, so we exit. */ | |
2233 | if ((!typespec_ok || specs->typespec_kind == ctsk_tagdef) | |
2234 | && c_parser_next_tokens_start_typename (parser, la) | |
2235 | && !c_parser_next_token_is_qualifier (parser)) | |
2236 | break; | |
f725e721 | 2237 | |
27bf414c JM |
2238 | if (c_parser_next_token_is (parser, CPP_NAME)) |
2239 | { | |
0b2c4be5 DS |
2240 | c_token *name_token = c_parser_peek_token (parser); |
2241 | tree value = name_token->value; | |
2242 | c_id_kind kind = name_token->id_kind; | |
36c5e70a BE |
2243 | |
2244 | if (kind == C_ID_ADDRSPACE) | |
2245 | { | |
2246 | addr_space_t as | |
0b2c4be5 DS |
2247 | = name_token->keyword - RID_FIRST_ADDR_SPACE; |
2248 | declspecs_add_addrspace (name_token->location, specs, as); | |
36c5e70a BE |
2249 | c_parser_consume_token (parser); |
2250 | attrs_ok = true; | |
2251 | continue; | |
2252 | } | |
2253 | ||
29ce73cb PB |
2254 | gcc_assert (!c_parser_next_token_is_qualifier (parser)); |
2255 | ||
2256 | /* If we cannot accept a type, and the next token must start one, | |
2257 | exit. Do the same if we already have seen a tagged definition, | |
2258 | since it would be an error anyway and likely the user has simply | |
2259 | forgotten a semicolon. */ | |
2260 | if (seen_type || !c_parser_next_tokens_start_typename (parser, la)) | |
2261 | break; | |
2262 | ||
2263 | /* Now at an unknown typename (C_ID_ID), a C_ID_TYPENAME or | |
2264 | a C_ID_CLASSNAME. */ | |
27bf414c JM |
2265 | c_parser_consume_token (parser); |
2266 | seen_type = true; | |
2267 | attrs_ok = true; | |
29ce73cb PB |
2268 | if (kind == C_ID_ID) |
2269 | { | |
1c9f5f33 | 2270 | error_at (loc, "unknown type name %qE", value); |
29ce73cb PB |
2271 | t.kind = ctsk_typedef; |
2272 | t.spec = error_mark_node; | |
2273 | } | |
2274 | else if (kind == C_ID_TYPENAME | |
2275 | && (!c_dialect_objc () | |
2276 | || c_parser_next_token_is_not (parser, CPP_LESS))) | |
27bf414c JM |
2277 | { |
2278 | t.kind = ctsk_typedef; | |
2279 | /* For a typedef name, record the meaning, not the name. | |
2280 | In case of 'foo foo, bar;'. */ | |
2281 | t.spec = lookup_name (value); | |
2282 | } | |
2283 | else | |
2284 | { | |
2285 | tree proto = NULL_TREE; | |
2286 | gcc_assert (c_dialect_objc ()); | |
2287 | t.kind = ctsk_objc; | |
2288 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
2289 | proto = c_parser_objc_protocol_refs (parser); | |
2290 | t.spec = objc_get_protocol_qualified_type (value, proto); | |
2291 | } | |
29ce73cb PB |
2292 | t.expr = NULL_TREE; |
2293 | t.expr_const_operands = true; | |
0b2c4be5 | 2294 | declspecs_add_type (name_token->location, specs, t); |
27bf414c JM |
2295 | continue; |
2296 | } | |
2297 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
2298 | { | |
2299 | /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>" - | |
2300 | nisse@lysator.liu.se. */ | |
2301 | tree proto; | |
2302 | gcc_assert (c_dialect_objc ()); | |
2303 | if (!typespec_ok || seen_type) | |
2304 | break; | |
2305 | proto = c_parser_objc_protocol_refs (parser); | |
2306 | t.kind = ctsk_objc; | |
2307 | t.spec = objc_get_protocol_qualified_type (NULL_TREE, proto); | |
928c19bb JM |
2308 | t.expr = NULL_TREE; |
2309 | t.expr_const_operands = true; | |
dc491a25 | 2310 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2311 | continue; |
2312 | } | |
2313 | gcc_assert (c_parser_next_token_is (parser, CPP_KEYWORD)); | |
2314 | switch (c_parser_peek_token (parser)->keyword) | |
2315 | { | |
2316 | case RID_STATIC: | |
2317 | case RID_EXTERN: | |
2318 | case RID_REGISTER: | |
2319 | case RID_TYPEDEF: | |
2320 | case RID_INLINE: | |
bbceee64 | 2321 | case RID_NORETURN: |
27bf414c JM |
2322 | case RID_AUTO: |
2323 | case RID_THREAD: | |
2324 | if (!scspec_ok) | |
2325 | goto out; | |
2326 | attrs_ok = true; | |
bbceee64 | 2327 | /* TODO: Distinguish between function specifiers (inline, noreturn) |
27bf414c JM |
2328 | and storage class specifiers, either here or in |
2329 | declspecs_add_scspec. */ | |
0b2c4be5 DS |
2330 | declspecs_add_scspec (loc, specs, |
2331 | c_parser_peek_token (parser)->value); | |
27bf414c JM |
2332 | c_parser_consume_token (parser); |
2333 | break; | |
38b7bc7f JM |
2334 | case RID_AUTO_TYPE: |
2335 | if (!auto_type_ok) | |
2336 | goto out; | |
2337 | /* Fall through. */ | |
27bf414c JM |
2338 | case RID_UNSIGNED: |
2339 | case RID_LONG: | |
2340 | case RID_SHORT: | |
2341 | case RID_SIGNED: | |
2342 | case RID_COMPLEX: | |
2343 | case RID_INT: | |
2344 | case RID_CHAR: | |
2345 | case RID_FLOAT: | |
2346 | case RID_DOUBLE: | |
2347 | case RID_VOID: | |
9a8ce21f JG |
2348 | case RID_DFLOAT32: |
2349 | case RID_DFLOAT64: | |
2350 | case RID_DFLOAT128: | |
27bf414c | 2351 | case RID_BOOL: |
ab22c1fa CF |
2352 | case RID_FRACT: |
2353 | case RID_ACCUM: | |
2354 | case RID_SAT: | |
78a7c317 DD |
2355 | case RID_INT_N_0: |
2356 | case RID_INT_N_1: | |
2357 | case RID_INT_N_2: | |
2358 | case RID_INT_N_3: | |
27bf414c JM |
2359 | if (!typespec_ok) |
2360 | goto out; | |
2361 | attrs_ok = true; | |
2362 | seen_type = true; | |
0bacb8c7 TT |
2363 | if (c_dialect_objc ()) |
2364 | parser->objc_need_raw_identifier = true; | |
27bf414c JM |
2365 | t.kind = ctsk_resword; |
2366 | t.spec = c_parser_peek_token (parser)->value; | |
928c19bb JM |
2367 | t.expr = NULL_TREE; |
2368 | t.expr_const_operands = true; | |
dc491a25 | 2369 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2370 | c_parser_consume_token (parser); |
2371 | break; | |
2372 | case RID_ENUM: | |
2373 | if (!typespec_ok) | |
2374 | goto out; | |
2375 | attrs_ok = true; | |
2376 | seen_type = true; | |
2377 | t = c_parser_enum_specifier (parser); | |
dc491a25 | 2378 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2379 | break; |
2380 | case RID_STRUCT: | |
2381 | case RID_UNION: | |
2382 | if (!typespec_ok) | |
2383 | goto out; | |
2384 | attrs_ok = true; | |
2385 | seen_type = true; | |
2386 | t = c_parser_struct_or_union_specifier (parser); | |
dab71827 | 2387 | invoke_plugin_callbacks (PLUGIN_FINISH_TYPE, t.spec); |
dc491a25 | 2388 | declspecs_add_type (loc, specs, t); |
27bf414c JM |
2389 | break; |
2390 | case RID_TYPEOF: | |
2391 | /* ??? The old parser rejected typeof after other type | |
2392 | specifiers, but is a syntax error the best way of | |
2393 | handling this? */ | |
2394 | if (!typespec_ok || seen_type) | |
2395 | goto out; | |
2396 | attrs_ok = true; | |
2397 | seen_type = true; | |
2398 | t = c_parser_typeof_specifier (parser); | |
dc491a25 | 2399 | declspecs_add_type (loc, specs, t); |
27bf414c | 2400 | break; |
267bac10 JM |
2401 | case RID_ATOMIC: |
2402 | /* C parser handling of Objective-C constructs needs | |
2403 | checking for correct lvalue-to-rvalue conversions, and | |
2404 | the code in build_modify_expr handling various | |
2405 | Objective-C cases, and that in build_unary_op handling | |
2406 | Objective-C cases for increment / decrement, also needs | |
2407 | updating; uses of TYPE_MAIN_VARIANT in objc_compare_types | |
2408 | and objc_types_are_equivalent may also need updates. */ | |
2409 | if (c_dialect_objc ()) | |
2410 | sorry ("%<_Atomic%> in Objective-C"); | |
2411 | /* C parser handling of OpenMP constructs needs checking for | |
2412 | correct lvalue-to-rvalue conversions. */ | |
2413 | if (flag_openmp) | |
2414 | sorry ("%<_Atomic%> with OpenMP"); | |
35aff4fb MP |
2415 | if (flag_isoc99) |
2416 | pedwarn_c99 (loc, OPT_Wpedantic, | |
267bac10 | 2417 | "ISO C99 does not support the %<_Atomic%> qualifier"); |
35aff4fb MP |
2418 | else |
2419 | pedwarn_c99 (loc, OPT_Wpedantic, | |
267bac10 | 2420 | "ISO C90 does not support the %<_Atomic%> qualifier"); |
267bac10 JM |
2421 | attrs_ok = true; |
2422 | tree value; | |
2423 | value = c_parser_peek_token (parser)->value; | |
2424 | c_parser_consume_token (parser); | |
2425 | if (typespec_ok && c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
2426 | { | |
2427 | /* _Atomic ( type-name ). */ | |
2428 | seen_type = true; | |
2429 | c_parser_consume_token (parser); | |
2430 | struct c_type_name *type = c_parser_type_name (parser); | |
2431 | t.kind = ctsk_typeof; | |
2432 | t.spec = error_mark_node; | |
2433 | t.expr = NULL_TREE; | |
2434 | t.expr_const_operands = true; | |
2435 | if (type != NULL) | |
2436 | t.spec = groktypename (type, &t.expr, | |
2437 | &t.expr_const_operands); | |
2438 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
2439 | "expected %<)%>"); | |
2440 | if (t.spec != error_mark_node) | |
2441 | { | |
2442 | if (TREE_CODE (t.spec) == ARRAY_TYPE) | |
2443 | error_at (loc, "%<_Atomic%>-qualified array type"); | |
2444 | else if (TREE_CODE (t.spec) == FUNCTION_TYPE) | |
2445 | error_at (loc, "%<_Atomic%>-qualified function type"); | |
2446 | else if (TYPE_QUALS (t.spec) != TYPE_UNQUALIFIED) | |
2447 | error_at (loc, "%<_Atomic%> applied to a qualified type"); | |
2448 | else | |
2449 | t.spec = c_build_qualified_type (t.spec, TYPE_QUAL_ATOMIC); | |
2450 | } | |
2451 | declspecs_add_type (loc, specs, t); | |
2452 | } | |
2453 | else | |
2454 | declspecs_add_qual (loc, specs, value); | |
2455 | break; | |
27bf414c JM |
2456 | case RID_CONST: |
2457 | case RID_VOLATILE: | |
2458 | case RID_RESTRICT: | |
2459 | attrs_ok = true; | |
0b2c4be5 | 2460 | declspecs_add_qual (loc, specs, c_parser_peek_token (parser)->value); |
27bf414c JM |
2461 | c_parser_consume_token (parser); |
2462 | break; | |
2463 | case RID_ATTRIBUTE: | |
2464 | if (!attrs_ok) | |
2465 | goto out; | |
2466 | attrs = c_parser_attributes (parser); | |
0b2c4be5 | 2467 | declspecs_add_attrs (loc, specs, attrs); |
27bf414c | 2468 | break; |
d19fa6b5 | 2469 | case RID_ALIGNAS: |
568a31f2 MP |
2470 | if (!alignspec_ok) |
2471 | goto out; | |
d19fa6b5 | 2472 | align = c_parser_alignas_specifier (parser); |
0b2c4be5 | 2473 | declspecs_add_alignas (loc, specs, align); |
d19fa6b5 | 2474 | break; |
27bf414c JM |
2475 | default: |
2476 | goto out; | |
2477 | } | |
2478 | } | |
2479 | out: ; | |
2480 | } | |
2481 | ||
2482 | /* Parse an enum specifier (C90 6.5.2.2, C99 6.7.2.2). | |
2483 | ||
2484 | enum-specifier: | |
2485 | enum attributes[opt] identifier[opt] { enumerator-list } attributes[opt] | |
2486 | enum attributes[opt] identifier[opt] { enumerator-list , } attributes[opt] | |
2487 | enum attributes[opt] identifier | |
2488 | ||
2489 | The form with trailing comma is new in C99. The forms with | |
2490 | attributes are GNU extensions. In GNU C, we accept any expression | |
2491 | without commas in the syntax (assignment expressions, not just | |
2492 | conditional expressions); assignment expressions will be diagnosed | |
2493 | as non-constant. | |
2494 | ||
2495 | enumerator-list: | |
2496 | enumerator | |
2497 | enumerator-list , enumerator | |
2498 | ||
2499 | enumerator: | |
2500 | enumeration-constant | |
2501 | enumeration-constant = constant-expression | |
2502 | */ | |
2503 | ||
2504 | static struct c_typespec | |
2505 | c_parser_enum_specifier (c_parser *parser) | |
2506 | { | |
2507 | struct c_typespec ret; | |
2508 | tree attrs; | |
2509 | tree ident = NULL_TREE; | |
24b97832 | 2510 | location_t enum_loc; |
922f2908 | 2511 | location_t ident_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c | 2512 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ENUM)); |
24b97832 | 2513 | enum_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2514 | c_parser_consume_token (parser); |
2515 | attrs = c_parser_attributes (parser); | |
c2255bc4 | 2516 | enum_loc = c_parser_peek_token (parser)->location; |
5af28c74 TT |
2517 | /* Set the location in case we create a decl now. */ |
2518 | c_parser_set_source_position_from_token (c_parser_peek_token (parser)); | |
27bf414c JM |
2519 | if (c_parser_next_token_is (parser, CPP_NAME)) |
2520 | { | |
2521 | ident = c_parser_peek_token (parser)->value; | |
c7412148 | 2522 | ident_loc = c_parser_peek_token (parser)->location; |
24b97832 | 2523 | enum_loc = ident_loc; |
27bf414c JM |
2524 | c_parser_consume_token (parser); |
2525 | } | |
2526 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
2527 | { | |
2528 | /* Parse an enum definition. */ | |
7114359f | 2529 | struct c_enum_contents the_enum; |
575bfb00 | 2530 | tree type; |
27bf414c JM |
2531 | tree postfix_attrs; |
2532 | /* We chain the enumerators in reverse order, then put them in | |
2533 | forward order at the end. */ | |
575bfb00 LC |
2534 | tree values; |
2535 | timevar_push (TV_PARSE_ENUM); | |
2536 | type = start_enum (enum_loc, &the_enum, ident); | |
2537 | values = NULL_TREE; | |
27bf414c JM |
2538 | c_parser_consume_token (parser); |
2539 | while (true) | |
2540 | { | |
2541 | tree enum_id; | |
2542 | tree enum_value; | |
2543 | tree enum_decl; | |
2544 | bool seen_comma; | |
5af28c74 | 2545 | c_token *token; |
922f2908 | 2546 | location_t comma_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
7370e0da | 2547 | location_t decl_loc, value_loc; |
27bf414c JM |
2548 | if (c_parser_next_token_is_not (parser, CPP_NAME)) |
2549 | { | |
2550 | c_parser_error (parser, "expected identifier"); | |
2551 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2552 | values = error_mark_node; | |
2553 | break; | |
2554 | } | |
5af28c74 TT |
2555 | token = c_parser_peek_token (parser); |
2556 | enum_id = token->value; | |
2557 | /* Set the location in case we create a decl now. */ | |
2558 | c_parser_set_source_position_from_token (token); | |
7370e0da | 2559 | decl_loc = value_loc = token->location; |
27bf414c JM |
2560 | c_parser_consume_token (parser); |
2561 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
2562 | { | |
2563 | c_parser_consume_token (parser); | |
85790e66 | 2564 | value_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2565 | enum_value = c_parser_expr_no_commas (parser, NULL).value; |
2566 | } | |
2567 | else | |
2568 | enum_value = NULL_TREE; | |
7370e0da | 2569 | enum_decl = build_enumerator (decl_loc, value_loc, |
c2255bc4 | 2570 | &the_enum, enum_id, enum_value); |
27bf414c JM |
2571 | TREE_CHAIN (enum_decl) = values; |
2572 | values = enum_decl; | |
2573 | seen_comma = false; | |
2574 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
2575 | { | |
c7412148 | 2576 | comma_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2577 | seen_comma = true; |
2578 | c_parser_consume_token (parser); | |
2579 | } | |
2580 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2581 | { | |
f3bede71 MP |
2582 | if (seen_comma) |
2583 | pedwarn_c90 (comma_loc, OPT_Wpedantic, | |
2584 | "comma at end of enumerator list"); | |
27bf414c JM |
2585 | c_parser_consume_token (parser); |
2586 | break; | |
2587 | } | |
2588 | if (!seen_comma) | |
2589 | { | |
2590 | c_parser_error (parser, "expected %<,%> or %<}%>"); | |
2591 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2592 | values = error_mark_node; | |
2593 | break; | |
2594 | } | |
2595 | } | |
2596 | postfix_attrs = c_parser_attributes (parser); | |
2597 | ret.spec = finish_enum (type, nreverse (values), | |
2598 | chainon (attrs, postfix_attrs)); | |
2599 | ret.kind = ctsk_tagdef; | |
928c19bb JM |
2600 | ret.expr = NULL_TREE; |
2601 | ret.expr_const_operands = true; | |
575bfb00 | 2602 | timevar_pop (TV_PARSE_ENUM); |
27bf414c JM |
2603 | return ret; |
2604 | } | |
2605 | else if (!ident) | |
2606 | { | |
2607 | c_parser_error (parser, "expected %<{%>"); | |
2608 | ret.spec = error_mark_node; | |
2609 | ret.kind = ctsk_tagref; | |
928c19bb JM |
2610 | ret.expr = NULL_TREE; |
2611 | ret.expr_const_operands = true; | |
27bf414c JM |
2612 | return ret; |
2613 | } | |
c2255bc4 | 2614 | ret = parser_xref_tag (ident_loc, ENUMERAL_TYPE, ident); |
27bf414c JM |
2615 | /* In ISO C, enumerated types can be referred to only if already |
2616 | defined. */ | |
2617 | if (pedantic && !COMPLETE_TYPE_P (ret.spec)) | |
c7412148 TT |
2618 | { |
2619 | gcc_assert (ident); | |
c1771a20 | 2620 | pedwarn (enum_loc, OPT_Wpedantic, |
509c9d60 | 2621 | "ISO C forbids forward references to %<enum%> types"); |
c7412148 | 2622 | } |
27bf414c JM |
2623 | return ret; |
2624 | } | |
2625 | ||
2626 | /* Parse a struct or union specifier (C90 6.5.2.1, C99 6.7.2.1). | |
2627 | ||
2628 | struct-or-union-specifier: | |
2629 | struct-or-union attributes[opt] identifier[opt] | |
2630 | { struct-contents } attributes[opt] | |
2631 | struct-or-union attributes[opt] identifier | |
2632 | ||
2633 | struct-contents: | |
2634 | struct-declaration-list | |
2635 | ||
2636 | struct-declaration-list: | |
2637 | struct-declaration ; | |
2638 | struct-declaration-list struct-declaration ; | |
2639 | ||
2640 | GNU extensions: | |
2641 | ||
2642 | struct-contents: | |
2643 | empty | |
2644 | struct-declaration | |
2645 | struct-declaration-list struct-declaration | |
2646 | ||
2647 | struct-declaration-list: | |
2648 | struct-declaration-list ; | |
2649 | ; | |
2650 | ||
2651 | (Note that in the syntax here, unlike that in ISO C, the semicolons | |
2652 | are included here rather than in struct-declaration, in order to | |
2653 | describe the syntax with extra semicolons and missing semicolon at | |
2654 | end.) | |
2655 | ||
2656 | Objective-C: | |
2657 | ||
2658 | struct-declaration-list: | |
2659 | @defs ( class-name ) | |
2660 | ||
2661 | (Note this does not include a trailing semicolon, but can be | |
2662 | followed by further declarations, and gets a pedwarn-if-pedantic | |
2663 | when followed by a semicolon.) */ | |
2664 | ||
2665 | static struct c_typespec | |
2666 | c_parser_struct_or_union_specifier (c_parser *parser) | |
2667 | { | |
2668 | struct c_typespec ret; | |
2669 | tree attrs; | |
2670 | tree ident = NULL_TREE; | |
24b97832 ILT |
2671 | location_t struct_loc; |
2672 | location_t ident_loc = UNKNOWN_LOCATION; | |
27bf414c JM |
2673 | enum tree_code code; |
2674 | switch (c_parser_peek_token (parser)->keyword) | |
2675 | { | |
2676 | case RID_STRUCT: | |
2677 | code = RECORD_TYPE; | |
2678 | break; | |
2679 | case RID_UNION: | |
2680 | code = UNION_TYPE; | |
2681 | break; | |
2682 | default: | |
2683 | gcc_unreachable (); | |
2684 | } | |
24b97832 | 2685 | struct_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
2686 | c_parser_consume_token (parser); |
2687 | attrs = c_parser_attributes (parser); | |
c2255bc4 | 2688 | |
5af28c74 TT |
2689 | /* Set the location in case we create a decl now. */ |
2690 | c_parser_set_source_position_from_token (c_parser_peek_token (parser)); | |
c2255bc4 | 2691 | |
27bf414c JM |
2692 | if (c_parser_next_token_is (parser, CPP_NAME)) |
2693 | { | |
2694 | ident = c_parser_peek_token (parser)->value; | |
24b97832 ILT |
2695 | ident_loc = c_parser_peek_token (parser)->location; |
2696 | struct_loc = ident_loc; | |
27bf414c JM |
2697 | c_parser_consume_token (parser); |
2698 | } | |
2699 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
2700 | { | |
2701 | /* Parse a struct or union definition. Start the scope of the | |
2702 | tag before parsing components. */ | |
dc491a25 ILT |
2703 | struct c_struct_parse_info *struct_info; |
2704 | tree type = start_struct (struct_loc, code, ident, &struct_info); | |
27bf414c JM |
2705 | tree postfix_attrs; |
2706 | /* We chain the components in reverse order, then put them in | |
2707 | forward order at the end. Each struct-declaration may | |
2708 | declare multiple components (comma-separated), so we must use | |
2709 | chainon to join them, although when parsing each | |
2710 | struct-declaration we can use TREE_CHAIN directly. | |
2711 | ||
2712 | The theory behind all this is that there will be more | |
2713 | semicolon separated fields than comma separated fields, and | |
2714 | so we'll be minimizing the number of node traversals required | |
2715 | by chainon. */ | |
575bfb00 LC |
2716 | tree contents; |
2717 | timevar_push (TV_PARSE_STRUCT); | |
2718 | contents = NULL_TREE; | |
27bf414c JM |
2719 | c_parser_consume_token (parser); |
2720 | /* Handle the Objective-C @defs construct, | |
2721 | e.g. foo(sizeof(struct{ @defs(ClassName) }));. */ | |
2722 | if (c_parser_next_token_is_keyword (parser, RID_AT_DEFS)) | |
2723 | { | |
2724 | tree name; | |
2725 | gcc_assert (c_dialect_objc ()); | |
2726 | c_parser_consume_token (parser); | |
2727 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
2728 | goto end_at_defs; | |
2729 | if (c_parser_next_token_is (parser, CPP_NAME) | |
2730 | && c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME) | |
2731 | { | |
2732 | name = c_parser_peek_token (parser)->value; | |
2733 | c_parser_consume_token (parser); | |
2734 | } | |
2735 | else | |
2736 | { | |
2737 | c_parser_error (parser, "expected class name"); | |
2738 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
2739 | goto end_at_defs; | |
2740 | } | |
2741 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
2742 | "expected %<)%>"); | |
2743 | contents = nreverse (objc_get_class_ivars (name)); | |
2744 | } | |
2745 | end_at_defs: | |
2746 | /* Parse the struct-declarations and semicolons. Problems with | |
2747 | semicolons are diagnosed here; empty structures are diagnosed | |
2748 | elsewhere. */ | |
2749 | while (true) | |
2750 | { | |
2751 | tree decls; | |
2752 | /* Parse any stray semicolon. */ | |
2753 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
2754 | { | |
c1771a20 | 2755 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 2756 | "extra semicolon in struct or union specified"); |
27bf414c JM |
2757 | c_parser_consume_token (parser); |
2758 | continue; | |
2759 | } | |
2760 | /* Stop if at the end of the struct or union contents. */ | |
2761 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2762 | { | |
2763 | c_parser_consume_token (parser); | |
2764 | break; | |
2765 | } | |
bc4071dd RH |
2766 | /* Accept #pragmas at struct scope. */ |
2767 | if (c_parser_next_token_is (parser, CPP_PRAGMA)) | |
2768 | { | |
acf0174b | 2769 | c_parser_pragma (parser, pragma_struct); |
bc4071dd RH |
2770 | continue; |
2771 | } | |
27bf414c JM |
2772 | /* Parse some comma-separated declarations, but not the |
2773 | trailing semicolon if any. */ | |
2774 | decls = c_parser_struct_declaration (parser); | |
2775 | contents = chainon (decls, contents); | |
2776 | /* If no semicolon follows, either we have a parse error or | |
2777 | are at the end of the struct or union and should | |
2778 | pedwarn. */ | |
2779 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
2780 | c_parser_consume_token (parser); | |
2781 | else | |
2782 | { | |
2783 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
b8698a0f | 2784 | pedwarn (c_parser_peek_token (parser)->location, 0, |
509c9d60 | 2785 | "no semicolon at end of struct or union"); |
f725e721 PB |
2786 | else if (parser->error |
2787 | || !c_parser_next_token_starts_declspecs (parser)) | |
27bf414c JM |
2788 | { |
2789 | c_parser_error (parser, "expected %<;%>"); | |
2790 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
2791 | break; | |
2792 | } | |
f725e721 PB |
2793 | |
2794 | /* If we come here, we have already emitted an error | |
2795 | for an expected `;', identifier or `(', and we also | |
2796 | recovered already. Go on with the next field. */ | |
27bf414c JM |
2797 | } |
2798 | } | |
2799 | postfix_attrs = c_parser_attributes (parser); | |
c2255bc4 | 2800 | ret.spec = finish_struct (struct_loc, type, nreverse (contents), |
dc491a25 | 2801 | chainon (attrs, postfix_attrs), struct_info); |
27bf414c | 2802 | ret.kind = ctsk_tagdef; |
928c19bb JM |
2803 | ret.expr = NULL_TREE; |
2804 | ret.expr_const_operands = true; | |
575bfb00 | 2805 | timevar_pop (TV_PARSE_STRUCT); |
27bf414c JM |
2806 | return ret; |
2807 | } | |
2808 | else if (!ident) | |
2809 | { | |
2810 | c_parser_error (parser, "expected %<{%>"); | |
2811 | ret.spec = error_mark_node; | |
2812 | ret.kind = ctsk_tagref; | |
928c19bb JM |
2813 | ret.expr = NULL_TREE; |
2814 | ret.expr_const_operands = true; | |
67c2939d | 2815 | return ret; |
27bf414c | 2816 | } |
c2255bc4 | 2817 | ret = parser_xref_tag (ident_loc, code, ident); |
27bf414c JM |
2818 | return ret; |
2819 | } | |
2820 | ||
2821 | /* Parse a struct-declaration (C90 6.5.2.1, C99 6.7.2.1), *without* | |
2822 | the trailing semicolon. | |
2823 | ||
2824 | struct-declaration: | |
2825 | specifier-qualifier-list struct-declarator-list | |
32912286 | 2826 | static_assert-declaration-no-semi |
27bf414c JM |
2827 | |
2828 | specifier-qualifier-list: | |
2829 | type-specifier specifier-qualifier-list[opt] | |
2830 | type-qualifier specifier-qualifier-list[opt] | |
2831 | attributes specifier-qualifier-list[opt] | |
2832 | ||
2833 | struct-declarator-list: | |
2834 | struct-declarator | |
2835 | struct-declarator-list , attributes[opt] struct-declarator | |
2836 | ||
2837 | struct-declarator: | |
2838 | declarator attributes[opt] | |
2839 | declarator[opt] : constant-expression attributes[opt] | |
2840 | ||
2841 | GNU extensions: | |
2842 | ||
2843 | struct-declaration: | |
2844 | __extension__ struct-declaration | |
2845 | specifier-qualifier-list | |
2846 | ||
2847 | Unlike the ISO C syntax, semicolons are handled elsewhere. The use | |
2848 | of attributes where shown is a GNU extension. In GNU C, we accept | |
2849 | any expression without commas in the syntax (assignment | |
2850 | expressions, not just conditional expressions); assignment | |
2851 | expressions will be diagnosed as non-constant. */ | |
2852 | ||
2853 | static tree | |
2854 | c_parser_struct_declaration (c_parser *parser) | |
2855 | { | |
2856 | struct c_declspecs *specs; | |
2857 | tree prefix_attrs; | |
2858 | tree all_prefix_attrs; | |
2859 | tree decls; | |
c7412148 | 2860 | location_t decl_loc; |
27bf414c JM |
2861 | if (c_parser_next_token_is_keyword (parser, RID_EXTENSION)) |
2862 | { | |
2863 | int ext; | |
2864 | tree decl; | |
2865 | ext = disable_extension_diagnostics (); | |
2866 | c_parser_consume_token (parser); | |
2867 | decl = c_parser_struct_declaration (parser); | |
2868 | restore_extension_diagnostics (ext); | |
2869 | return decl; | |
2870 | } | |
32912286 JM |
2871 | if (c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT)) |
2872 | { | |
2873 | c_parser_static_assert_declaration_no_semi (parser); | |
2874 | return NULL_TREE; | |
2875 | } | |
27bf414c | 2876 | specs = build_null_declspecs (); |
c7412148 | 2877 | decl_loc = c_parser_peek_token (parser)->location; |
f28aa681 MP |
2878 | /* Strictly by the standard, we shouldn't allow _Alignas here, |
2879 | but it appears to have been intended to allow it there, so | |
2880 | we're keeping it as it is until WG14 reaches a conclusion | |
2881 | of N1731. | |
2882 | <http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1731.pdf> */ | |
568a31f2 | 2883 | c_parser_declspecs (parser, specs, false, true, true, |
38b7bc7f | 2884 | true, false, cla_nonabstract_decl); |
27bf414c | 2885 | if (parser->error) |
67c2939d | 2886 | return NULL_TREE; |
27bf414c JM |
2887 | if (!specs->declspecs_seen_p) |
2888 | { | |
2889 | c_parser_error (parser, "expected specifier-qualifier-list"); | |
2890 | return NULL_TREE; | |
2891 | } | |
2892 | finish_declspecs (specs); | |
b8cbdff5 JM |
2893 | if (c_parser_next_token_is (parser, CPP_SEMICOLON) |
2894 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
27bf414c JM |
2895 | { |
2896 | tree ret; | |
9e5b2115 | 2897 | if (specs->typespec_kind == ctsk_none) |
27bf414c | 2898 | { |
c1771a20 | 2899 | pedwarn (decl_loc, OPT_Wpedantic, |
509c9d60 | 2900 | "ISO C forbids member declarations with no members"); |
27bf414c JM |
2901 | shadow_tag_warned (specs, pedantic); |
2902 | ret = NULL_TREE; | |
2903 | } | |
2904 | else | |
2905 | { | |
2906 | /* Support for unnamed structs or unions as members of | |
2907 | structs or unions (which is [a] useful and [b] supports | |
2908 | MS P-SDK). */ | |
b9baeecd | 2909 | tree attrs = NULL; |
3d10ed6c AH |
2910 | |
2911 | ret = grokfield (c_parser_peek_token (parser)->location, | |
2912 | build_id_declarator (NULL_TREE), specs, | |
b9baeecd | 2913 | NULL_TREE, &attrs); |
0ad7e054 RS |
2914 | if (ret) |
2915 | decl_attributes (&ret, attrs, 0); | |
27bf414c JM |
2916 | } |
2917 | return ret; | |
2918 | } | |
f725e721 PB |
2919 | |
2920 | /* Provide better error recovery. Note that a type name here is valid, | |
2921 | and will be treated as a field name. */ | |
2922 | if (specs->typespec_kind == ctsk_tagdef | |
2923 | && TREE_CODE (specs->type) != ENUMERAL_TYPE | |
2924 | && c_parser_next_token_starts_declspecs (parser) | |
2925 | && !c_parser_next_token_is (parser, CPP_NAME)) | |
2926 | { | |
2927 | c_parser_error (parser, "expected %<;%>, identifier or %<(%>"); | |
2928 | parser->error = false; | |
2929 | return NULL_TREE; | |
2930 | } | |
2931 | ||
27bf414c JM |
2932 | pending_xref_error (); |
2933 | prefix_attrs = specs->attrs; | |
2934 | all_prefix_attrs = prefix_attrs; | |
2935 | specs->attrs = NULL_TREE; | |
2936 | decls = NULL_TREE; | |
2937 | while (true) | |
2938 | { | |
2939 | /* Declaring one or more declarators or un-named bit-fields. */ | |
2940 | struct c_declarator *declarator; | |
2941 | bool dummy = false; | |
2942 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
2943 | declarator = build_id_declarator (NULL_TREE); | |
2944 | else | |
9e5b2115 PB |
2945 | declarator = c_parser_declarator (parser, |
2946 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
2947 | C_DTR_NORMAL, &dummy); |
2948 | if (declarator == NULL) | |
2949 | { | |
2950 | c_parser_skip_to_end_of_block_or_statement (parser); | |
2951 | break; | |
2952 | } | |
2953 | if (c_parser_next_token_is (parser, CPP_COLON) | |
2954 | || c_parser_next_token_is (parser, CPP_COMMA) | |
2955 | || c_parser_next_token_is (parser, CPP_SEMICOLON) | |
2956 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE) | |
2957 | || c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2958 | { | |
2959 | tree postfix_attrs = NULL_TREE; | |
2960 | tree width = NULL_TREE; | |
2961 | tree d; | |
2962 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
2963 | { | |
2964 | c_parser_consume_token (parser); | |
2965 | width = c_parser_expr_no_commas (parser, NULL).value; | |
2966 | } | |
2967 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2968 | postfix_attrs = c_parser_attributes (parser); | |
3d10ed6c AH |
2969 | d = grokfield (c_parser_peek_token (parser)->location, |
2970 | declarator, specs, width, &all_prefix_attrs); | |
27bf414c JM |
2971 | decl_attributes (&d, chainon (postfix_attrs, |
2972 | all_prefix_attrs), 0); | |
910ad8de | 2973 | DECL_CHAIN (d) = decls; |
27bf414c JM |
2974 | decls = d; |
2975 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
2976 | all_prefix_attrs = chainon (c_parser_attributes (parser), | |
2977 | prefix_attrs); | |
2978 | else | |
2979 | all_prefix_attrs = prefix_attrs; | |
2980 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
2981 | c_parser_consume_token (parser); | |
2982 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON) | |
2983 | || c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
2984 | { | |
2985 | /* Semicolon consumed in caller. */ | |
2986 | break; | |
2987 | } | |
2988 | else | |
2989 | { | |
2990 | c_parser_error (parser, "expected %<,%>, %<;%> or %<}%>"); | |
2991 | break; | |
2992 | } | |
2993 | } | |
2994 | else | |
2995 | { | |
2996 | c_parser_error (parser, | |
2997 | "expected %<:%>, %<,%>, %<;%>, %<}%> or " | |
2998 | "%<__attribute__%>"); | |
2999 | break; | |
3000 | } | |
3001 | } | |
3002 | return decls; | |
3003 | } | |
3004 | ||
3005 | /* Parse a typeof specifier (a GNU extension). | |
3006 | ||
3007 | typeof-specifier: | |
3008 | typeof ( expression ) | |
3009 | typeof ( type-name ) | |
3010 | */ | |
3011 | ||
3012 | static struct c_typespec | |
3013 | c_parser_typeof_specifier (c_parser *parser) | |
3014 | { | |
3015 | struct c_typespec ret; | |
3016 | ret.kind = ctsk_typeof; | |
3017 | ret.spec = error_mark_node; | |
928c19bb JM |
3018 | ret.expr = NULL_TREE; |
3019 | ret.expr_const_operands = true; | |
27bf414c JM |
3020 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_TYPEOF)); |
3021 | c_parser_consume_token (parser); | |
7d882b83 | 3022 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
3023 | in_typeof++; |
3024 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3025 | { | |
7d882b83 | 3026 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
3027 | in_typeof--; |
3028 | return ret; | |
3029 | } | |
29ce73cb | 3030 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_id)) |
27bf414c JM |
3031 | { |
3032 | struct c_type_name *type = c_parser_type_name (parser); | |
7d882b83 | 3033 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
3034 | in_typeof--; |
3035 | if (type != NULL) | |
3036 | { | |
928c19bb | 3037 | ret.spec = groktypename (type, &ret.expr, &ret.expr_const_operands); |
27bf414c JM |
3038 | pop_maybe_used (variably_modified_type_p (ret.spec, NULL_TREE)); |
3039 | } | |
3040 | } | |
3041 | else | |
3042 | { | |
52ffd86e | 3043 | bool was_vm; |
c7412148 | 3044 | location_t here = c_parser_peek_token (parser)->location; |
27bf414c | 3045 | struct c_expr expr = c_parser_expression (parser); |
7d882b83 | 3046 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
3047 | in_typeof--; |
3048 | if (TREE_CODE (expr.value) == COMPONENT_REF | |
3049 | && DECL_C_BIT_FIELD (TREE_OPERAND (expr.value, 1))) | |
3ba09659 | 3050 | error_at (here, "%<typeof%> applied to a bit-field"); |
ebfbbdc5 | 3051 | mark_exp_read (expr.value); |
27bf414c | 3052 | ret.spec = TREE_TYPE (expr.value); |
52ffd86e | 3053 | was_vm = variably_modified_type_p (ret.spec, NULL_TREE); |
928c19bb JM |
3054 | /* This is returned with the type so that when the type is |
3055 | evaluated, this can be evaluated. */ | |
3056 | if (was_vm) | |
3057 | ret.expr = c_fully_fold (expr.value, false, &ret.expr_const_operands); | |
52ffd86e | 3058 | pop_maybe_used (was_vm); |
9698b078 SH |
3059 | /* For use in macros such as those in <stdatomic.h>, remove all |
3060 | qualifiers from atomic types. (const can be an issue for more macros | |
3061 | using typeof than just the <stdatomic.h> ones.) */ | |
267bac10 | 3062 | if (ret.spec != error_mark_node && TYPE_ATOMIC (ret.spec)) |
9698b078 | 3063 | ret.spec = c_build_qualified_type (ret.spec, TYPE_UNQUALIFIED); |
27bf414c JM |
3064 | } |
3065 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
3066 | return ret; | |
3067 | } | |
3068 | ||
d19fa6b5 JM |
3069 | /* Parse an alignment-specifier. |
3070 | ||
48b0b196 | 3071 | C11 6.7.5: |
d19fa6b5 JM |
3072 | |
3073 | alignment-specifier: | |
3074 | _Alignas ( type-name ) | |
3075 | _Alignas ( constant-expression ) | |
3076 | */ | |
3077 | ||
3078 | static tree | |
3079 | c_parser_alignas_specifier (c_parser * parser) | |
3080 | { | |
3081 | tree ret = error_mark_node; | |
3082 | location_t loc = c_parser_peek_token (parser)->location; | |
3083 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ALIGNAS)); | |
3084 | c_parser_consume_token (parser); | |
35aff4fb MP |
3085 | if (flag_isoc99) |
3086 | pedwarn_c99 (loc, OPT_Wpedantic, | |
d19fa6b5 | 3087 | "ISO C99 does not support %<_Alignas%>"); |
35aff4fb MP |
3088 | else |
3089 | pedwarn_c99 (loc, OPT_Wpedantic, | |
d19fa6b5 | 3090 | "ISO C90 does not support %<_Alignas%>"); |
d19fa6b5 JM |
3091 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
3092 | return ret; | |
3093 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_id)) | |
3094 | { | |
3095 | struct c_type_name *type = c_parser_type_name (parser); | |
3096 | if (type != NULL) | |
296674db JM |
3097 | ret = c_sizeof_or_alignof_type (loc, groktypename (type, NULL, NULL), |
3098 | false, true, 1); | |
d19fa6b5 JM |
3099 | } |
3100 | else | |
3101 | ret = c_parser_expr_no_commas (parser, NULL).value; | |
3102 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
3103 | return ret; | |
3104 | } | |
3105 | ||
27bf414c JM |
3106 | /* Parse a declarator, possibly an abstract declarator (C90 6.5.4, |
3107 | 6.5.5, C99 6.7.5, 6.7.6). If TYPE_SEEN_P then a typedef name may | |
3108 | be redeclared; otherwise it may not. KIND indicates which kind of | |
3109 | declarator is wanted. Returns a valid declarator except in the | |
3110 | case of a syntax error in which case NULL is returned. *SEEN_ID is | |
3111 | set to true if an identifier being declared is seen; this is used | |
3112 | to diagnose bad forms of abstract array declarators and to | |
3113 | determine whether an identifier list is syntactically permitted. | |
3114 | ||
3115 | declarator: | |
3116 | pointer[opt] direct-declarator | |
3117 | ||
3118 | direct-declarator: | |
3119 | identifier | |
3120 | ( attributes[opt] declarator ) | |
3121 | direct-declarator array-declarator | |
3122 | direct-declarator ( parameter-type-list ) | |
3123 | direct-declarator ( identifier-list[opt] ) | |
3124 | ||
3125 | pointer: | |
3126 | * type-qualifier-list[opt] | |
3127 | * type-qualifier-list[opt] pointer | |
3128 | ||
3129 | type-qualifier-list: | |
3130 | type-qualifier | |
3131 | attributes | |
3132 | type-qualifier-list type-qualifier | |
3133 | type-qualifier-list attributes | |
3134 | ||
568a31f2 MP |
3135 | array-declarator: |
3136 | [ type-qualifier-list[opt] assignment-expression[opt] ] | |
3137 | [ static type-qualifier-list[opt] assignment-expression ] | |
3138 | [ type-qualifier-list static assignment-expression ] | |
3139 | [ type-qualifier-list[opt] * ] | |
3140 | ||
27bf414c JM |
3141 | parameter-type-list: |
3142 | parameter-list | |
3143 | parameter-list , ... | |
3144 | ||
3145 | parameter-list: | |
3146 | parameter-declaration | |
3147 | parameter-list , parameter-declaration | |
3148 | ||
3149 | parameter-declaration: | |
3150 | declaration-specifiers declarator attributes[opt] | |
3151 | declaration-specifiers abstract-declarator[opt] attributes[opt] | |
3152 | ||
3153 | identifier-list: | |
3154 | identifier | |
3155 | identifier-list , identifier | |
3156 | ||
3157 | abstract-declarator: | |
3158 | pointer | |
3159 | pointer[opt] direct-abstract-declarator | |
3160 | ||
3161 | direct-abstract-declarator: | |
3162 | ( attributes[opt] abstract-declarator ) | |
3163 | direct-abstract-declarator[opt] array-declarator | |
3164 | direct-abstract-declarator[opt] ( parameter-type-list[opt] ) | |
3165 | ||
3166 | GNU extensions: | |
3167 | ||
3168 | direct-declarator: | |
3169 | direct-declarator ( parameter-forward-declarations | |
3170 | parameter-type-list[opt] ) | |
3171 | ||
3172 | direct-abstract-declarator: | |
c22cacf3 | 3173 | direct-abstract-declarator[opt] ( parameter-forward-declarations |
27bf414c JM |
3174 | parameter-type-list[opt] ) |
3175 | ||
3176 | parameter-forward-declarations: | |
3177 | parameter-list ; | |
3178 | parameter-forward-declarations parameter-list ; | |
3179 | ||
3180 | The uses of attributes shown above are GNU extensions. | |
3181 | ||
3182 | Some forms of array declarator are not included in C99 in the | |
3183 | syntax for abstract declarators; these are disallowed elsewhere. | |
3184 | This may be a defect (DR#289). | |
3185 | ||
3186 | This function also accepts an omitted abstract declarator as being | |
3187 | an abstract declarator, although not part of the formal syntax. */ | |
3188 | ||
3189 | static struct c_declarator * | |
3190 | c_parser_declarator (c_parser *parser, bool type_seen_p, c_dtr_syn kind, | |
3191 | bool *seen_id) | |
3192 | { | |
3193 | /* Parse any initial pointer part. */ | |
3194 | if (c_parser_next_token_is (parser, CPP_MULT)) | |
3195 | { | |
3196 | struct c_declspecs *quals_attrs = build_null_declspecs (); | |
3197 | struct c_declarator *inner; | |
3198 | c_parser_consume_token (parser); | |
568a31f2 | 3199 | c_parser_declspecs (parser, quals_attrs, false, false, true, |
38b7bc7f | 3200 | false, false, cla_prefer_id); |
27bf414c JM |
3201 | inner = c_parser_declarator (parser, type_seen_p, kind, seen_id); |
3202 | if (inner == NULL) | |
3203 | return NULL; | |
3204 | else | |
3205 | return make_pointer_declarator (quals_attrs, inner); | |
3206 | } | |
3207 | /* Now we have a direct declarator, direct abstract declarator or | |
3208 | nothing (which counts as a direct abstract declarator here). */ | |
3209 | return c_parser_direct_declarator (parser, type_seen_p, kind, seen_id); | |
3210 | } | |
3211 | ||
3212 | /* Parse a direct declarator or direct abstract declarator; arguments | |
3213 | as c_parser_declarator. */ | |
3214 | ||
3215 | static struct c_declarator * | |
3216 | c_parser_direct_declarator (c_parser *parser, bool type_seen_p, c_dtr_syn kind, | |
3217 | bool *seen_id) | |
3218 | { | |
3219 | /* The direct declarator must start with an identifier (possibly | |
3220 | omitted) or a parenthesized declarator (possibly abstract). In | |
3221 | an ordinary declarator, initial parentheses must start a | |
3222 | parenthesized declarator. In an abstract declarator or parameter | |
3223 | declarator, they could start a parenthesized declarator or a | |
3224 | parameter list. To tell which, the open parenthesis and any | |
3225 | following attributes must be read. If a declaration specifier | |
3226 | follows, then it is a parameter list; if the specifier is a | |
3227 | typedef name, there might be an ambiguity about redeclaring it, | |
3228 | which is resolved in the direction of treating it as a typedef | |
3229 | name. If a close parenthesis follows, it is also an empty | |
3230 | parameter list, as the syntax does not permit empty abstract | |
0fa2e4df | 3231 | declarators. Otherwise, it is a parenthesized declarator (in |
27bf414c JM |
3232 | which case the analysis may be repeated inside it, recursively). |
3233 | ||
3234 | ??? There is an ambiguity in a parameter declaration "int | |
3235 | (__attribute__((foo)) x)", where x is not a typedef name: it | |
3236 | could be an abstract declarator for a function, or declare x with | |
3237 | parentheses. The proper resolution of this ambiguity needs | |
3238 | documenting. At present we follow an accident of the old | |
3239 | parser's implementation, whereby the first parameter must have | |
3240 | some declaration specifiers other than just attributes. Thus as | |
0fa2e4df | 3241 | a parameter declaration it is treated as a parenthesized |
27bf414c JM |
3242 | parameter named x, and as an abstract declarator it is |
3243 | rejected. | |
3244 | ||
3245 | ??? Also following the old parser, attributes inside an empty | |
3246 | parameter list are ignored, making it a list not yielding a | |
3247 | prototype, rather than giving an error or making it have one | |
3248 | parameter with implicit type int. | |
3249 | ||
3250 | ??? Also following the old parser, typedef names may be | |
3251 | redeclared in declarators, but not Objective-C class names. */ | |
3252 | ||
3253 | if (kind != C_DTR_ABSTRACT | |
3254 | && c_parser_next_token_is (parser, CPP_NAME) | |
3255 | && ((type_seen_p | |
a6341d57 NP |
3256 | && (c_parser_peek_token (parser)->id_kind == C_ID_TYPENAME |
3257 | || c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)) | |
27bf414c JM |
3258 | || c_parser_peek_token (parser)->id_kind == C_ID_ID)) |
3259 | { | |
3260 | struct c_declarator *inner | |
3261 | = build_id_declarator (c_parser_peek_token (parser)->value); | |
3262 | *seen_id = true; | |
6037d88d | 3263 | inner->id_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
3264 | c_parser_consume_token (parser); |
3265 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
3266 | } | |
3267 | ||
3268 | if (kind != C_DTR_NORMAL | |
3269 | && c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
3270 | { | |
3271 | struct c_declarator *inner = build_id_declarator (NULL_TREE); | |
3272 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
3273 | } | |
3274 | ||
3275 | /* Either we are at the end of an abstract declarator, or we have | |
3276 | parentheses. */ | |
3277 | ||
3278 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
3279 | { | |
3280 | tree attrs; | |
3281 | struct c_declarator *inner; | |
3282 | c_parser_consume_token (parser); | |
3283 | attrs = c_parser_attributes (parser); | |
3284 | if (kind != C_DTR_NORMAL | |
3285 | && (c_parser_next_token_starts_declspecs (parser) | |
3286 | || c_parser_next_token_is (parser, CPP_CLOSE_PAREN))) | |
3287 | { | |
3288 | struct c_arg_info *args | |
3289 | = c_parser_parms_declarator (parser, kind == C_DTR_NORMAL, | |
3290 | attrs); | |
3291 | if (args == NULL) | |
3292 | return NULL; | |
3293 | else | |
3294 | { | |
3295 | inner | |
3296 | = build_function_declarator (args, | |
3297 | build_id_declarator (NULL_TREE)); | |
3298 | return c_parser_direct_declarator_inner (parser, *seen_id, | |
3299 | inner); | |
3300 | } | |
3301 | } | |
3302 | /* A parenthesized declarator. */ | |
3303 | inner = c_parser_declarator (parser, type_seen_p, kind, seen_id); | |
3304 | if (inner != NULL && attrs != NULL) | |
3305 | inner = build_attrs_declarator (attrs, inner); | |
3306 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3307 | { | |
3308 | c_parser_consume_token (parser); | |
3309 | if (inner == NULL) | |
3310 | return NULL; | |
3311 | else | |
3312 | return c_parser_direct_declarator_inner (parser, *seen_id, inner); | |
3313 | } | |
3314 | else | |
3315 | { | |
3316 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3317 | "expected %<)%>"); | |
3318 | return NULL; | |
3319 | } | |
3320 | } | |
3321 | else | |
3322 | { | |
3323 | if (kind == C_DTR_NORMAL) | |
3324 | { | |
3325 | c_parser_error (parser, "expected identifier or %<(%>"); | |
3326 | return NULL; | |
3327 | } | |
3328 | else | |
3329 | return build_id_declarator (NULL_TREE); | |
3330 | } | |
3331 | } | |
3332 | ||
3333 | /* Parse part of a direct declarator or direct abstract declarator, | |
3334 | given that some (in INNER) has already been parsed; ID_PRESENT is | |
3335 | true if an identifier is present, false for an abstract | |
3336 | declarator. */ | |
3337 | ||
3338 | static struct c_declarator * | |
3339 | c_parser_direct_declarator_inner (c_parser *parser, bool id_present, | |
3340 | struct c_declarator *inner) | |
3341 | { | |
3342 | /* Parse a sequence of array declarators and parameter lists. */ | |
3343 | if (c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
3344 | { | |
b8698a0f | 3345 | location_t brace_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
3346 | struct c_declarator *declarator; |
3347 | struct c_declspecs *quals_attrs = build_null_declspecs (); | |
3348 | bool static_seen; | |
3349 | bool star_seen; | |
267bac10 JM |
3350 | struct c_expr dimen; |
3351 | dimen.value = NULL_TREE; | |
3352 | dimen.original_code = ERROR_MARK; | |
3353 | dimen.original_type = NULL_TREE; | |
27bf414c | 3354 | c_parser_consume_token (parser); |
568a31f2 | 3355 | c_parser_declspecs (parser, quals_attrs, false, false, true, |
38b7bc7f | 3356 | false, false, cla_prefer_id); |
27bf414c JM |
3357 | static_seen = c_parser_next_token_is_keyword (parser, RID_STATIC); |
3358 | if (static_seen) | |
3359 | c_parser_consume_token (parser); | |
3360 | if (static_seen && !quals_attrs->declspecs_seen_p) | |
568a31f2 | 3361 | c_parser_declspecs (parser, quals_attrs, false, false, true, |
38b7bc7f | 3362 | false, false, cla_prefer_id); |
27bf414c JM |
3363 | if (!quals_attrs->declspecs_seen_p) |
3364 | quals_attrs = NULL; | |
3365 | /* If "static" is present, there must be an array dimension. | |
3366 | Otherwise, there may be a dimension, "*", or no | |
3367 | dimension. */ | |
3368 | if (static_seen) | |
3369 | { | |
3370 | star_seen = false; | |
267bac10 | 3371 | dimen = c_parser_expr_no_commas (parser, NULL); |
27bf414c JM |
3372 | } |
3373 | else | |
3374 | { | |
3375 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
3376 | { | |
267bac10 | 3377 | dimen.value = NULL_TREE; |
27bf414c JM |
3378 | star_seen = false; |
3379 | } | |
b72271b9 | 3380 | else if (flag_cilkplus |
36536d79 BI |
3381 | && c_parser_next_token_is (parser, CPP_COLON)) |
3382 | { | |
267bac10 | 3383 | dimen.value = error_mark_node; |
36536d79 BI |
3384 | star_seen = false; |
3385 | error_at (c_parser_peek_token (parser)->location, | |
3386 | "array notations cannot be used in declaration"); | |
3387 | c_parser_consume_token (parser); | |
3388 | } | |
27bf414c JM |
3389 | else if (c_parser_next_token_is (parser, CPP_MULT)) |
3390 | { | |
3391 | if (c_parser_peek_2nd_token (parser)->type == CPP_CLOSE_SQUARE) | |
3392 | { | |
267bac10 | 3393 | dimen.value = NULL_TREE; |
27bf414c JM |
3394 | star_seen = true; |
3395 | c_parser_consume_token (parser); | |
3396 | } | |
3397 | else | |
3398 | { | |
3399 | star_seen = false; | |
267bac10 | 3400 | dimen = c_parser_expr_no_commas (parser, NULL); |
27bf414c JM |
3401 | } |
3402 | } | |
3403 | else | |
3404 | { | |
3405 | star_seen = false; | |
267bac10 | 3406 | dimen = c_parser_expr_no_commas (parser, NULL); |
27bf414c JM |
3407 | } |
3408 | } | |
3409 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
3410 | c_parser_consume_token (parser); | |
b72271b9 | 3411 | else if (flag_cilkplus |
36536d79 BI |
3412 | && c_parser_next_token_is (parser, CPP_COLON)) |
3413 | { | |
3414 | error_at (c_parser_peek_token (parser)->location, | |
3415 | "array notations cannot be used in declaration"); | |
3416 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
3417 | return NULL; | |
3418 | } | |
27bf414c JM |
3419 | else |
3420 | { | |
3421 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
3422 | "expected %<]%>"); | |
3423 | return NULL; | |
3424 | } | |
267bac10 JM |
3425 | if (dimen.value) |
3426 | dimen = convert_lvalue_to_rvalue (brace_loc, dimen, true, true); | |
3427 | declarator = build_array_declarator (brace_loc, dimen.value, quals_attrs, | |
c2255bc4 | 3428 | static_seen, star_seen); |
52ffd86e MS |
3429 | if (declarator == NULL) |
3430 | return NULL; | |
6ac0194d | 3431 | inner = set_array_declarator_inner (declarator, inner); |
27bf414c JM |
3432 | return c_parser_direct_declarator_inner (parser, id_present, inner); |
3433 | } | |
3434 | else if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
3435 | { | |
3436 | tree attrs; | |
3437 | struct c_arg_info *args; | |
3438 | c_parser_consume_token (parser); | |
3439 | attrs = c_parser_attributes (parser); | |
3440 | args = c_parser_parms_declarator (parser, id_present, attrs); | |
3441 | if (args == NULL) | |
3442 | return NULL; | |
3443 | else | |
3444 | { | |
3445 | inner = build_function_declarator (args, inner); | |
3446 | return c_parser_direct_declarator_inner (parser, id_present, inner); | |
3447 | } | |
3448 | } | |
3449 | return inner; | |
3450 | } | |
3451 | ||
3452 | /* Parse a parameter list or identifier list, including the closing | |
3453 | parenthesis but not the opening one. ATTRS are the attributes at | |
3454 | the start of the list. ID_LIST_OK is true if an identifier list is | |
3455 | acceptable; such a list must not have attributes at the start. */ | |
3456 | ||
3457 | static struct c_arg_info * | |
3458 | c_parser_parms_declarator (c_parser *parser, bool id_list_ok, tree attrs) | |
3459 | { | |
3460 | push_scope (); | |
3461 | declare_parm_level (); | |
3462 | /* If the list starts with an identifier, it is an identifier list. | |
3463 | Otherwise, it is either a prototype list or an empty list. */ | |
3464 | if (id_list_ok | |
3465 | && !attrs | |
3466 | && c_parser_next_token_is (parser, CPP_NAME) | |
29ce73cb PB |
3467 | && c_parser_peek_token (parser)->id_kind == C_ID_ID |
3468 | ||
3469 | /* Look ahead to detect typos in type names. */ | |
3470 | && c_parser_peek_2nd_token (parser)->type != CPP_NAME | |
3471 | && c_parser_peek_2nd_token (parser)->type != CPP_MULT | |
3472 | && c_parser_peek_2nd_token (parser)->type != CPP_OPEN_PAREN | |
3473 | && c_parser_peek_2nd_token (parser)->type != CPP_OPEN_SQUARE) | |
27bf414c | 3474 | { |
7fa3585c | 3475 | tree list = NULL_TREE, *nextp = &list; |
27bf414c JM |
3476 | while (c_parser_next_token_is (parser, CPP_NAME) |
3477 | && c_parser_peek_token (parser)->id_kind == C_ID_ID) | |
3478 | { | |
7fa3585c GK |
3479 | *nextp = build_tree_list (NULL_TREE, |
3480 | c_parser_peek_token (parser)->value); | |
3481 | nextp = & TREE_CHAIN (*nextp); | |
27bf414c JM |
3482 | c_parser_consume_token (parser); |
3483 | if (c_parser_next_token_is_not (parser, CPP_COMMA)) | |
3484 | break; | |
3485 | c_parser_consume_token (parser); | |
3486 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3487 | { | |
3488 | c_parser_error (parser, "expected identifier"); | |
3489 | break; | |
3490 | } | |
3491 | } | |
3492 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3493 | { | |
b3399d18 | 3494 | struct c_arg_info *ret = build_arg_info (); |
27bf414c | 3495 | ret->types = list; |
27bf414c JM |
3496 | c_parser_consume_token (parser); |
3497 | pop_scope (); | |
3498 | return ret; | |
3499 | } | |
3500 | else | |
3501 | { | |
3502 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3503 | "expected %<)%>"); | |
3504 | pop_scope (); | |
3505 | return NULL; | |
3506 | } | |
3507 | } | |
3508 | else | |
3509 | { | |
a04a722b JM |
3510 | struct c_arg_info *ret = c_parser_parms_list_declarator (parser, attrs, |
3511 | NULL); | |
27bf414c JM |
3512 | pop_scope (); |
3513 | return ret; | |
3514 | } | |
3515 | } | |
3516 | ||
3517 | /* Parse a parameter list (possibly empty), including the closing | |
3518 | parenthesis but not the opening one. ATTRS are the attributes at | |
a04a722b JM |
3519 | the start of the list. EXPR is NULL or an expression that needs to |
3520 | be evaluated for the side effects of array size expressions in the | |
3521 | parameters. */ | |
27bf414c JM |
3522 | |
3523 | static struct c_arg_info * | |
a04a722b | 3524 | c_parser_parms_list_declarator (c_parser *parser, tree attrs, tree expr) |
27bf414c | 3525 | { |
09a1e889 | 3526 | bool bad_parm = false; |
a04a722b | 3527 | |
27bf414c JM |
3528 | /* ??? Following the old parser, forward parameter declarations may |
3529 | use abstract declarators, and if no real parameter declarations | |
3530 | follow the forward declarations then this is not diagnosed. Also | |
3531 | note as above that attributes are ignored as the only contents of | |
3532 | the parentheses, or as the only contents after forward | |
3533 | declarations. */ | |
3534 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3535 | { | |
b3399d18 | 3536 | struct c_arg_info *ret = build_arg_info (); |
27bf414c JM |
3537 | c_parser_consume_token (parser); |
3538 | return ret; | |
3539 | } | |
3540 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
3541 | { | |
b3399d18 | 3542 | struct c_arg_info *ret = build_arg_info (); |
6637388f TG |
3543 | |
3544 | if (flag_allow_parameterless_variadic_functions) | |
3545 | { | |
3546 | /* F (...) is allowed. */ | |
3547 | ret->types = NULL_TREE; | |
3548 | } | |
3549 | else | |
3550 | { | |
3551 | /* Suppress -Wold-style-definition for this case. */ | |
3552 | ret->types = error_mark_node; | |
3553 | error_at (c_parser_peek_token (parser)->location, | |
3554 | "ISO C requires a named argument before %<...%>"); | |
3555 | } | |
27bf414c JM |
3556 | c_parser_consume_token (parser); |
3557 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3558 | { | |
3559 | c_parser_consume_token (parser); | |
3560 | return ret; | |
3561 | } | |
3562 | else | |
3563 | { | |
3564 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3565 | "expected %<)%>"); | |
3566 | return NULL; | |
3567 | } | |
3568 | } | |
3569 | /* Nonempty list of parameters, either terminated with semicolon | |
3570 | (forward declarations; recurse) or with close parenthesis (normal | |
3571 | function) or with ", ... )" (variadic function). */ | |
3572 | while (true) | |
3573 | { | |
3574 | /* Parse a parameter. */ | |
3575 | struct c_parm *parm = c_parser_parameter_declaration (parser, attrs); | |
3576 | attrs = NULL_TREE; | |
09a1e889 SZ |
3577 | if (parm == NULL) |
3578 | bad_parm = true; | |
3579 | else | |
a04a722b | 3580 | push_parm_decl (parm, &expr); |
27bf414c JM |
3581 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
3582 | { | |
3583 | tree new_attrs; | |
3584 | c_parser_consume_token (parser); | |
91d975b8 | 3585 | mark_forward_parm_decls (); |
27bf414c | 3586 | new_attrs = c_parser_attributes (parser); |
a04a722b | 3587 | return c_parser_parms_list_declarator (parser, new_attrs, expr); |
27bf414c JM |
3588 | } |
3589 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3590 | { | |
3591 | c_parser_consume_token (parser); | |
09a1e889 | 3592 | if (bad_parm) |
a04a722b | 3593 | return NULL; |
09a1e889 | 3594 | else |
a04a722b | 3595 | return get_parm_info (false, expr); |
27bf414c JM |
3596 | } |
3597 | if (!c_parser_require (parser, CPP_COMMA, | |
3598 | "expected %<;%>, %<,%> or %<)%>")) | |
3599 | { | |
3600 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
3601 | return NULL; | |
3602 | } | |
3603 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
3604 | { | |
3605 | c_parser_consume_token (parser); | |
3606 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
3607 | { | |
3608 | c_parser_consume_token (parser); | |
09a1e889 | 3609 | if (bad_parm) |
a04a722b | 3610 | return NULL; |
09a1e889 | 3611 | else |
a04a722b | 3612 | return get_parm_info (true, expr); |
27bf414c JM |
3613 | } |
3614 | else | |
3615 | { | |
3616 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
3617 | "expected %<)%>"); | |
3618 | return NULL; | |
3619 | } | |
3620 | } | |
3621 | } | |
3622 | } | |
3623 | ||
3624 | /* Parse a parameter declaration. ATTRS are the attributes at the | |
3625 | start of the declaration if it is the first parameter. */ | |
3626 | ||
3627 | static struct c_parm * | |
3628 | c_parser_parameter_declaration (c_parser *parser, tree attrs) | |
3629 | { | |
3630 | struct c_declspecs *specs; | |
3631 | struct c_declarator *declarator; | |
3632 | tree prefix_attrs; | |
3633 | tree postfix_attrs = NULL_TREE; | |
3634 | bool dummy = false; | |
51a1aacf TG |
3635 | |
3636 | /* Accept #pragmas between parameter declarations. */ | |
3637 | while (c_parser_next_token_is (parser, CPP_PRAGMA)) | |
acf0174b | 3638 | c_parser_pragma (parser, pragma_param); |
51a1aacf | 3639 | |
27bf414c JM |
3640 | if (!c_parser_next_token_starts_declspecs (parser)) |
3641 | { | |
09a1e889 SZ |
3642 | c_token *token = c_parser_peek_token (parser); |
3643 | if (parser->error) | |
3644 | return NULL; | |
3645 | c_parser_set_source_position_from_token (token); | |
29ce73cb | 3646 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_type)) |
09a1e889 | 3647 | { |
1c9f5f33 | 3648 | error_at (token->location, "unknown type name %qE", token->value); |
09a1e889 SZ |
3649 | parser->error = true; |
3650 | } | |
27bf414c JM |
3651 | /* ??? In some Objective-C cases '...' isn't applicable so there |
3652 | should be a different message. */ | |
09a1e889 SZ |
3653 | else |
3654 | c_parser_error (parser, | |
3655 | "expected declaration specifiers or %<...%>"); | |
27bf414c JM |
3656 | c_parser_skip_to_end_of_parameter (parser); |
3657 | return NULL; | |
3658 | } | |
3659 | specs = build_null_declspecs (); | |
3660 | if (attrs) | |
3661 | { | |
0b2c4be5 | 3662 | declspecs_add_attrs (input_location, specs, attrs); |
27bf414c JM |
3663 | attrs = NULL_TREE; |
3664 | } | |
38b7bc7f | 3665 | c_parser_declspecs (parser, specs, true, true, true, true, false, |
568a31f2 | 3666 | cla_nonabstract_decl); |
27bf414c JM |
3667 | finish_declspecs (specs); |
3668 | pending_xref_error (); | |
3669 | prefix_attrs = specs->attrs; | |
3670 | specs->attrs = NULL_TREE; | |
9e5b2115 PB |
3671 | declarator = c_parser_declarator (parser, |
3672 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
3673 | C_DTR_PARM, &dummy); |
3674 | if (declarator == NULL) | |
3675 | { | |
3676 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
3677 | return NULL; | |
3678 | } | |
3679 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
3680 | postfix_attrs = c_parser_attributes (parser); | |
3681 | return build_c_parm (specs, chainon (postfix_attrs, prefix_attrs), | |
3682 | declarator); | |
3683 | } | |
3684 | ||
3685 | /* Parse a string literal in an asm expression. It should not be | |
3686 | translated, and wide string literals are an error although | |
3687 | permitted by the syntax. This is a GNU extension. | |
3688 | ||
3689 | asm-string-literal: | |
3690 | string-literal | |
3691 | ||
3692 | ??? At present, following the old parser, the caller needs to have | |
46c2514e TT |
3693 | set lex_untranslated_string to 1. It would be better to follow the |
3694 | C++ parser rather than using this kludge. */ | |
27bf414c JM |
3695 | |
3696 | static tree | |
3697 | c_parser_asm_string_literal (c_parser *parser) | |
3698 | { | |
3699 | tree str; | |
87f9e23d TT |
3700 | int save_flag = warn_overlength_strings; |
3701 | warn_overlength_strings = 0; | |
27bf414c JM |
3702 | if (c_parser_next_token_is (parser, CPP_STRING)) |
3703 | { | |
3704 | str = c_parser_peek_token (parser)->value; | |
3705 | c_parser_consume_token (parser); | |
3706 | } | |
3707 | else if (c_parser_next_token_is (parser, CPP_WSTRING)) | |
3708 | { | |
3ba09659 AH |
3709 | error_at (c_parser_peek_token (parser)->location, |
3710 | "wide string literal in %<asm%>"); | |
27bf414c JM |
3711 | str = build_string (1, ""); |
3712 | c_parser_consume_token (parser); | |
3713 | } | |
3714 | else | |
3715 | { | |
3716 | c_parser_error (parser, "expected string literal"); | |
3717 | str = NULL_TREE; | |
3718 | } | |
87f9e23d | 3719 | warn_overlength_strings = save_flag; |
27bf414c JM |
3720 | return str; |
3721 | } | |
3722 | ||
3723 | /* Parse a simple asm expression. This is used in restricted | |
3724 | contexts, where a full expression with inputs and outputs does not | |
3725 | make sense. This is a GNU extension. | |
3726 | ||
3727 | simple-asm-expr: | |
3728 | asm ( asm-string-literal ) | |
3729 | */ | |
3730 | ||
3731 | static tree | |
3732 | c_parser_simple_asm_expr (c_parser *parser) | |
3733 | { | |
3734 | tree str; | |
3735 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ASM)); | |
3736 | /* ??? Follow the C++ parser rather than using the | |
46c2514e TT |
3737 | lex_untranslated_string kludge. */ |
3738 | parser->lex_untranslated_string = true; | |
27bf414c JM |
3739 | c_parser_consume_token (parser); |
3740 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3741 | { | |
46c2514e | 3742 | parser->lex_untranslated_string = false; |
27bf414c JM |
3743 | return NULL_TREE; |
3744 | } | |
3745 | str = c_parser_asm_string_literal (parser); | |
46c2514e | 3746 | parser->lex_untranslated_string = false; |
27bf414c JM |
3747 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
3748 | { | |
3749 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
3750 | return NULL_TREE; | |
3751 | } | |
3752 | return str; | |
3753 | } | |
3754 | ||
0a35513e AH |
3755 | static tree |
3756 | c_parser_attribute_any_word (c_parser *parser) | |
3757 | { | |
3758 | tree attr_name = NULL_TREE; | |
3759 | ||
3760 | if (c_parser_next_token_is (parser, CPP_KEYWORD)) | |
3761 | { | |
3762 | /* ??? See comment above about what keywords are accepted here. */ | |
3763 | bool ok; | |
3764 | switch (c_parser_peek_token (parser)->keyword) | |
3765 | { | |
3766 | case RID_STATIC: | |
3767 | case RID_UNSIGNED: | |
3768 | case RID_LONG: | |
0a35513e AH |
3769 | case RID_CONST: |
3770 | case RID_EXTERN: | |
3771 | case RID_REGISTER: | |
3772 | case RID_TYPEDEF: | |
3773 | case RID_SHORT: | |
3774 | case RID_INLINE: | |
3775 | case RID_NORETURN: | |
3776 | case RID_VOLATILE: | |
3777 | case RID_SIGNED: | |
3778 | case RID_AUTO: | |
3779 | case RID_RESTRICT: | |
3780 | case RID_COMPLEX: | |
3781 | case RID_THREAD: | |
3782 | case RID_INT: | |
3783 | case RID_CHAR: | |
3784 | case RID_FLOAT: | |
3785 | case RID_DOUBLE: | |
3786 | case RID_VOID: | |
3787 | case RID_DFLOAT32: | |
3788 | case RID_DFLOAT64: | |
3789 | case RID_DFLOAT128: | |
3790 | case RID_BOOL: | |
3791 | case RID_FRACT: | |
3792 | case RID_ACCUM: | |
3793 | case RID_SAT: | |
3794 | case RID_TRANSACTION_ATOMIC: | |
3795 | case RID_TRANSACTION_CANCEL: | |
267bac10 | 3796 | case RID_ATOMIC: |
38b7bc7f | 3797 | case RID_AUTO_TYPE: |
78a7c317 DD |
3798 | case RID_INT_N_0: |
3799 | case RID_INT_N_1: | |
3800 | case RID_INT_N_2: | |
3801 | case RID_INT_N_3: | |
0a35513e AH |
3802 | ok = true; |
3803 | break; | |
3804 | default: | |
3805 | ok = false; | |
3806 | break; | |
3807 | } | |
3808 | if (!ok) | |
3809 | return NULL_TREE; | |
3810 | ||
3811 | /* Accept __attribute__((__const)) as __attribute__((const)) etc. */ | |
3812 | attr_name = ridpointers[(int) c_parser_peek_token (parser)->keyword]; | |
3813 | } | |
3814 | else if (c_parser_next_token_is (parser, CPP_NAME)) | |
3815 | attr_name = c_parser_peek_token (parser)->value; | |
3816 | ||
3817 | return attr_name; | |
3818 | } | |
3819 | ||
41958c28 BI |
3820 | /* Returns true of NAME is an IDENTIFIER_NODE with identiifer "vector," |
3821 | "__vector" or "__vector__." */ | |
3822 | ||
3823 | static inline bool | |
3824 | is_cilkplus_vector_p (tree name) | |
3825 | { | |
b72271b9 | 3826 | if (flag_cilkplus && is_attribute_p ("vector", name)) |
41958c28 BI |
3827 | return true; |
3828 | return false; | |
3829 | } | |
3830 | ||
3831 | #define CILK_SIMD_FN_CLAUSE_MASK \ | |
3832 | ((OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_VECTORLENGTH) \ | |
3833 | | (OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_LINEAR) \ | |
3834 | | (OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_UNIFORM) \ | |
3835 | | (OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_MASK) \ | |
3836 | | (OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_NOMASK)) | |
3837 | ||
3838 | /* Parses the vector attribute of SIMD enabled functions in Cilk Plus. | |
3839 | VEC_TOKEN is the "vector" token that is replaced with "simd" and | |
3840 | pushed into the token list. | |
3841 | Syntax: | |
3842 | vector | |
3843 | vector (<vector attributes>). */ | |
3844 | ||
3845 | static void | |
3846 | c_parser_cilk_simd_fn_vector_attrs (c_parser *parser, c_token vec_token) | |
3847 | { | |
3848 | gcc_assert (is_cilkplus_vector_p (vec_token.value)); | |
3849 | ||
3850 | int paren_scope = 0; | |
3851 | vec_safe_push (parser->cilk_simd_fn_tokens, vec_token); | |
3852 | /* Consume the "vector" token. */ | |
3853 | c_parser_consume_token (parser); | |
3854 | ||
3855 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
3856 | { | |
3857 | c_parser_consume_token (parser); | |
3858 | paren_scope++; | |
3859 | } | |
3860 | while (paren_scope > 0) | |
3861 | { | |
3862 | c_token *token = c_parser_peek_token (parser); | |
3863 | if (token->type == CPP_OPEN_PAREN) | |
3864 | paren_scope++; | |
3865 | else if (token->type == CPP_CLOSE_PAREN) | |
3866 | paren_scope--; | |
3867 | /* Do not push the last ')' since we are not pushing the '('. */ | |
3868 | if (!(token->type == CPP_CLOSE_PAREN && paren_scope == 0)) | |
3869 | vec_safe_push (parser->cilk_simd_fn_tokens, *token); | |
3870 | c_parser_consume_token (parser); | |
3871 | } | |
3872 | ||
3873 | /* Since we are converting an attribute to a pragma, we need to end the | |
3874 | attribute with PRAGMA_EOL. */ | |
3875 | c_token eol_token; | |
3876 | memset (&eol_token, 0, sizeof (eol_token)); | |
3877 | eol_token.type = CPP_PRAGMA_EOL; | |
3878 | vec_safe_push (parser->cilk_simd_fn_tokens, eol_token); | |
3879 | } | |
3880 | ||
3881 | /* Add 2 CPP_EOF at the end of PARSER->ELEM_FN_TOKENS vector. */ | |
3882 | ||
3883 | static void | |
3884 | c_finish_cilk_simd_fn_tokens (c_parser *parser) | |
3885 | { | |
3886 | c_token last_token = parser->cilk_simd_fn_tokens->last (); | |
3887 | ||
3888 | /* c_parser_attributes is called in several places, so if these EOF | |
3889 | tokens are already inserted, then don't do them again. */ | |
3890 | if (last_token.type == CPP_EOF) | |
3891 | return; | |
3892 | ||
3893 | /* Two CPP_EOF token are added as a safety net since the normal C | |
3894 | front-end has two token look-ahead. */ | |
3895 | c_token eof_token; | |
3896 | eof_token.type = CPP_EOF; | |
3897 | vec_safe_push (parser->cilk_simd_fn_tokens, eof_token); | |
3898 | vec_safe_push (parser->cilk_simd_fn_tokens, eof_token); | |
3899 | } | |
3900 | ||
27bf414c JM |
3901 | /* Parse (possibly empty) attributes. This is a GNU extension. |
3902 | ||
3903 | attributes: | |
3904 | empty | |
3905 | attributes attribute | |
3906 | ||
3907 | attribute: | |
3908 | __attribute__ ( ( attribute-list ) ) | |
3909 | ||
3910 | attribute-list: | |
3911 | attrib | |
3912 | attribute_list , attrib | |
3913 | ||
3914 | attrib: | |
3915 | empty | |
3916 | any-word | |
3917 | any-word ( identifier ) | |
3918 | any-word ( identifier , nonempty-expr-list ) | |
3919 | any-word ( expr-list ) | |
3920 | ||
3921 | where the "identifier" must not be declared as a type, and | |
3922 | "any-word" may be any identifier (including one declared as a | |
3923 | type), a reserved word storage class specifier, type specifier or | |
3924 | type qualifier. ??? This still leaves out most reserved keywords | |
3925 | (following the old parser), shouldn't we include them, and why not | |
3926 | allow identifiers declared as types to start the arguments? */ | |
3927 | ||
3928 | static tree | |
3929 | c_parser_attributes (c_parser *parser) | |
3930 | { | |
3931 | tree attrs = NULL_TREE; | |
3932 | while (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
3933 | { | |
3934 | /* ??? Follow the C++ parser rather than using the | |
46c2514e TT |
3935 | lex_untranslated_string kludge. */ |
3936 | parser->lex_untranslated_string = true; | |
27bf414c JM |
3937 | c_parser_consume_token (parser); |
3938 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3939 | { | |
46c2514e | 3940 | parser->lex_untranslated_string = false; |
27bf414c JM |
3941 | return attrs; |
3942 | } | |
3943 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
3944 | { | |
46c2514e | 3945 | parser->lex_untranslated_string = false; |
27bf414c JM |
3946 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); |
3947 | return attrs; | |
3948 | } | |
3949 | /* Parse the attribute list. */ | |
3950 | while (c_parser_next_token_is (parser, CPP_COMMA) | |
3951 | || c_parser_next_token_is (parser, CPP_NAME) | |
3952 | || c_parser_next_token_is (parser, CPP_KEYWORD)) | |
3953 | { | |
3954 | tree attr, attr_name, attr_args; | |
9771b263 | 3955 | vec<tree, va_gc> *expr_list; |
27bf414c JM |
3956 | if (c_parser_next_token_is (parser, CPP_COMMA)) |
3957 | { | |
3958 | c_parser_consume_token (parser); | |
3959 | continue; | |
3960 | } | |
0a35513e AH |
3961 | |
3962 | attr_name = c_parser_attribute_any_word (parser); | |
3963 | if (attr_name == NULL) | |
3964 | break; | |
41958c28 BI |
3965 | if (is_cilkplus_vector_p (attr_name)) |
3966 | { | |
3967 | c_token *v_token = c_parser_peek_token (parser); | |
3968 | c_parser_cilk_simd_fn_vector_attrs (parser, *v_token); | |
3969 | continue; | |
3970 | } | |
27bf414c JM |
3971 | c_parser_consume_token (parser); |
3972 | if (c_parser_next_token_is_not (parser, CPP_OPEN_PAREN)) | |
3973 | { | |
3974 | attr = build_tree_list (attr_name, NULL_TREE); | |
3975 | attrs = chainon (attrs, attr); | |
3976 | continue; | |
3977 | } | |
3978 | c_parser_consume_token (parser); | |
3979 | /* Parse the attribute contents. If they start with an | |
3980 | identifier which is followed by a comma or close | |
3981 | parenthesis, then the arguments start with that | |
91ebb981 IS |
3982 | identifier; otherwise they are an expression list. |
3983 | In objective-c the identifier may be a classname. */ | |
27bf414c | 3984 | if (c_parser_next_token_is (parser, CPP_NAME) |
91ebb981 | 3985 | && (c_parser_peek_token (parser)->id_kind == C_ID_ID |
661a0813 MP |
3986 | || (c_dialect_objc () |
3987 | && c_parser_peek_token (parser)->id_kind | |
3988 | == C_ID_CLASSNAME)) | |
27bf414c JM |
3989 | && ((c_parser_peek_2nd_token (parser)->type == CPP_COMMA) |
3990 | || (c_parser_peek_2nd_token (parser)->type | |
661a0813 MP |
3991 | == CPP_CLOSE_PAREN)) |
3992 | && (attribute_takes_identifier_p (attr_name) | |
3993 | || (c_dialect_objc () | |
3994 | && c_parser_peek_token (parser)->id_kind | |
3995 | == C_ID_CLASSNAME))) | |
27bf414c JM |
3996 | { |
3997 | tree arg1 = c_parser_peek_token (parser)->value; | |
3998 | c_parser_consume_token (parser); | |
3999 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
4000 | attr_args = build_tree_list (NULL_TREE, arg1); | |
4001 | else | |
4002 | { | |
bbbbb16a | 4003 | tree tree_list; |
27bf414c | 4004 | c_parser_consume_token (parser); |
1a4049e7 | 4005 | expr_list = c_parser_expr_list (parser, false, true, |
81e5eca8 | 4006 | NULL, NULL, NULL, NULL); |
c166b898 | 4007 | tree_list = build_tree_list_vec (expr_list); |
bbbbb16a | 4008 | attr_args = tree_cons (NULL_TREE, arg1, tree_list); |
c166b898 | 4009 | release_tree_vector (expr_list); |
27bf414c JM |
4010 | } |
4011 | } | |
4012 | else | |
4013 | { | |
4014 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
4015 | attr_args = NULL_TREE; | |
4016 | else | |
bbbbb16a | 4017 | { |
1a4049e7 | 4018 | expr_list = c_parser_expr_list (parser, false, true, |
81e5eca8 | 4019 | NULL, NULL, NULL, NULL); |
c166b898 ILT |
4020 | attr_args = build_tree_list_vec (expr_list); |
4021 | release_tree_vector (expr_list); | |
bbbbb16a | 4022 | } |
27bf414c JM |
4023 | } |
4024 | attr = build_tree_list (attr_name, attr_args); | |
4025 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
4026 | c_parser_consume_token (parser); | |
4027 | else | |
4028 | { | |
46c2514e | 4029 | parser->lex_untranslated_string = false; |
27bf414c JM |
4030 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
4031 | "expected %<)%>"); | |
4032 | return attrs; | |
4033 | } | |
4034 | attrs = chainon (attrs, attr); | |
4035 | } | |
4036 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
4037 | c_parser_consume_token (parser); | |
4038 | else | |
4039 | { | |
46c2514e | 4040 | parser->lex_untranslated_string = false; |
27bf414c JM |
4041 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
4042 | "expected %<)%>"); | |
4043 | return attrs; | |
4044 | } | |
4045 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
4046 | c_parser_consume_token (parser); | |
4047 | else | |
4048 | { | |
46c2514e | 4049 | parser->lex_untranslated_string = false; |
27bf414c JM |
4050 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
4051 | "expected %<)%>"); | |
4052 | return attrs; | |
4053 | } | |
46c2514e | 4054 | parser->lex_untranslated_string = false; |
27bf414c | 4055 | } |
41958c28 | 4056 | |
b72271b9 | 4057 | if (flag_cilkplus && !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) |
41958c28 | 4058 | c_finish_cilk_simd_fn_tokens (parser); |
27bf414c JM |
4059 | return attrs; |
4060 | } | |
4061 | ||
4062 | /* Parse a type name (C90 6.5.5, C99 6.7.6). | |
4063 | ||
4064 | type-name: | |
4065 | specifier-qualifier-list abstract-declarator[opt] | |
4066 | */ | |
4067 | ||
4068 | static struct c_type_name * | |
4069 | c_parser_type_name (c_parser *parser) | |
4070 | { | |
4071 | struct c_declspecs *specs = build_null_declspecs (); | |
4072 | struct c_declarator *declarator; | |
4073 | struct c_type_name *ret; | |
4074 | bool dummy = false; | |
38b7bc7f | 4075 | c_parser_declspecs (parser, specs, false, true, true, false, false, |
568a31f2 | 4076 | cla_prefer_type); |
27bf414c JM |
4077 | if (!specs->declspecs_seen_p) |
4078 | { | |
4079 | c_parser_error (parser, "expected specifier-qualifier-list"); | |
4080 | return NULL; | |
4081 | } | |
29ce73cb PB |
4082 | if (specs->type != error_mark_node) |
4083 | { | |
4084 | pending_xref_error (); | |
4085 | finish_declspecs (specs); | |
4086 | } | |
9e5b2115 PB |
4087 | declarator = c_parser_declarator (parser, |
4088 | specs->typespec_kind != ctsk_none, | |
27bf414c JM |
4089 | C_DTR_ABSTRACT, &dummy); |
4090 | if (declarator == NULL) | |
4091 | return NULL; | |
4092 | ret = XOBNEW (&parser_obstack, struct c_type_name); | |
4093 | ret->specs = specs; | |
4094 | ret->declarator = declarator; | |
4095 | return ret; | |
4096 | } | |
4097 | ||
4098 | /* Parse an initializer (C90 6.5.7, C99 6.7.8). | |
4099 | ||
4100 | initializer: | |
4101 | assignment-expression | |
4102 | { initializer-list } | |
4103 | { initializer-list , } | |
4104 | ||
4105 | initializer-list: | |
4106 | designation[opt] initializer | |
4107 | initializer-list , designation[opt] initializer | |
4108 | ||
4109 | designation: | |
4110 | designator-list = | |
4111 | ||
4112 | designator-list: | |
4113 | designator | |
4114 | designator-list designator | |
4115 | ||
4116 | designator: | |
4117 | array-designator | |
4118 | . identifier | |
4119 | ||
4120 | array-designator: | |
4121 | [ constant-expression ] | |
4122 | ||
4123 | GNU extensions: | |
4124 | ||
4125 | initializer: | |
4126 | { } | |
4127 | ||
4128 | designation: | |
4129 | array-designator | |
4130 | identifier : | |
4131 | ||
4132 | array-designator: | |
4133 | [ constant-expression ... constant-expression ] | |
4134 | ||
4135 | Any expression without commas is accepted in the syntax for the | |
4136 | constant-expressions, with non-constant expressions rejected later. | |
4137 | ||
4138 | This function is only used for top-level initializers; for nested | |
4139 | ones, see c_parser_initval. */ | |
4140 | ||
4141 | static struct c_expr | |
4142 | c_parser_initializer (c_parser *parser) | |
4143 | { | |
4144 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
4145 | return c_parser_braced_init (parser, NULL_TREE, false); | |
4146 | else | |
46bdb9cf JM |
4147 | { |
4148 | struct c_expr ret; | |
c2255bc4 | 4149 | location_t loc = c_parser_peek_token (parser)->location; |
46bdb9cf JM |
4150 | ret = c_parser_expr_no_commas (parser, NULL); |
4151 | if (TREE_CODE (ret.value) != STRING_CST | |
4152 | && TREE_CODE (ret.value) != COMPOUND_LITERAL_EXPR) | |
267bac10 | 4153 | ret = convert_lvalue_to_rvalue (loc, ret, true, true); |
46bdb9cf JM |
4154 | return ret; |
4155 | } | |
27bf414c JM |
4156 | } |
4157 | ||
4158 | /* Parse a braced initializer list. TYPE is the type specified for a | |
4159 | compound literal, and NULL_TREE for other initializers and for | |
4160 | nested braced lists. NESTED_P is true for nested braced lists, | |
4161 | false for the list of a compound literal or the list that is the | |
4162 | top-level initializer in a declaration. */ | |
4163 | ||
4164 | static struct c_expr | |
4165 | c_parser_braced_init (c_parser *parser, tree type, bool nested_p) | |
4166 | { | |
a1e3b3d9 LB |
4167 | struct c_expr ret; |
4168 | struct obstack braced_init_obstack; | |
c7412148 | 4169 | location_t brace_loc = c_parser_peek_token (parser)->location; |
a1e3b3d9 | 4170 | gcc_obstack_init (&braced_init_obstack); |
27bf414c JM |
4171 | gcc_assert (c_parser_next_token_is (parser, CPP_OPEN_BRACE)); |
4172 | c_parser_consume_token (parser); | |
4173 | if (nested_p) | |
ea58ef42 | 4174 | push_init_level (brace_loc, 0, &braced_init_obstack); |
27bf414c JM |
4175 | else |
4176 | really_start_incremental_init (type); | |
4177 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
4178 | { | |
c1771a20 | 4179 | pedwarn (brace_loc, OPT_Wpedantic, "ISO C forbids empty initializer braces"); |
27bf414c JM |
4180 | } |
4181 | else | |
4182 | { | |
4183 | /* Parse a non-empty initializer list, possibly with a trailing | |
4184 | comma. */ | |
4185 | while (true) | |
4186 | { | |
a1e3b3d9 | 4187 | c_parser_initelt (parser, &braced_init_obstack); |
27bf414c JM |
4188 | if (parser->error) |
4189 | break; | |
4190 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
4191 | c_parser_consume_token (parser); | |
4192 | else | |
4193 | break; | |
4194 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
4195 | break; | |
4196 | } | |
4197 | } | |
4198 | if (c_parser_next_token_is_not (parser, CPP_CLOSE_BRACE)) | |
4199 | { | |
27bf414c JM |
4200 | ret.value = error_mark_node; |
4201 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 4202 | ret.original_type = NULL; |
27bf414c | 4203 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, "expected %<}%>"); |
ea58ef42 | 4204 | pop_init_level (brace_loc, 0, &braced_init_obstack); |
a1e3b3d9 | 4205 | obstack_free (&braced_init_obstack, NULL); |
27bf414c JM |
4206 | return ret; |
4207 | } | |
4208 | c_parser_consume_token (parser); | |
ea58ef42 | 4209 | ret = pop_init_level (brace_loc, 0, &braced_init_obstack); |
a1e3b3d9 LB |
4210 | obstack_free (&braced_init_obstack, NULL); |
4211 | return ret; | |
27bf414c JM |
4212 | } |
4213 | ||
4214 | /* Parse a nested initializer, including designators. */ | |
4215 | ||
4216 | static void | |
a1e3b3d9 | 4217 | c_parser_initelt (c_parser *parser, struct obstack * braced_init_obstack) |
27bf414c JM |
4218 | { |
4219 | /* Parse any designator or designator list. A single array | |
4220 | designator may have the subsequent "=" omitted in GNU C, but a | |
4221 | longer list or a structure member designator may not. */ | |
4222 | if (c_parser_next_token_is (parser, CPP_NAME) | |
4223 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON) | |
4224 | { | |
4225 | /* Old-style structure member designator. */ | |
ea58ef42 MP |
4226 | set_init_label (c_parser_peek_token (parser)->location, |
4227 | c_parser_peek_token (parser)->value, | |
a1e3b3d9 | 4228 | braced_init_obstack); |
fcf73884 | 4229 | /* Use the colon as the error location. */ |
c1771a20 | 4230 | pedwarn (c_parser_peek_2nd_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 4231 | "obsolete use of designated initializer with %<:%>"); |
27bf414c JM |
4232 | c_parser_consume_token (parser); |
4233 | c_parser_consume_token (parser); | |
4234 | } | |
4235 | else | |
4236 | { | |
4237 | /* des_seen is 0 if there have been no designators, 1 if there | |
4238 | has been a single array designator and 2 otherwise. */ | |
4239 | int des_seen = 0; | |
c7412148 | 4240 | /* Location of a designator. */ |
922f2908 | 4241 | location_t des_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
4242 | while (c_parser_next_token_is (parser, CPP_OPEN_SQUARE) |
4243 | || c_parser_next_token_is (parser, CPP_DOT)) | |
4244 | { | |
4245 | int des_prev = des_seen; | |
c7412148 TT |
4246 | if (!des_seen) |
4247 | des_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
4248 | if (des_seen < 2) |
4249 | des_seen++; | |
4250 | if (c_parser_next_token_is (parser, CPP_DOT)) | |
4251 | { | |
4252 | des_seen = 2; | |
4253 | c_parser_consume_token (parser); | |
4254 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
4255 | { | |
ea58ef42 | 4256 | set_init_label (des_loc, c_parser_peek_token (parser)->value, |
a1e3b3d9 | 4257 | braced_init_obstack); |
27bf414c JM |
4258 | c_parser_consume_token (parser); |
4259 | } | |
4260 | else | |
4261 | { | |
4262 | struct c_expr init; | |
4263 | init.value = error_mark_node; | |
4264 | init.original_code = ERROR_MARK; | |
6866c6e8 | 4265 | init.original_type = NULL; |
27bf414c JM |
4266 | c_parser_error (parser, "expected identifier"); |
4267 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
34cf811f MP |
4268 | process_init_element (input_location, init, false, |
4269 | braced_init_obstack); | |
27bf414c JM |
4270 | return; |
4271 | } | |
4272 | } | |
4273 | else | |
4274 | { | |
4275 | tree first, second; | |
922f2908 | 4276 | location_t ellipsis_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
ea58ef42 | 4277 | location_t array_index_loc = UNKNOWN_LOCATION; |
27bf414c JM |
4278 | /* ??? Following the old parser, [ objc-receiver |
4279 | objc-message-args ] is accepted as an initializer, | |
4280 | being distinguished from a designator by what follows | |
4281 | the first assignment expression inside the square | |
4282 | brackets, but after a first array designator a | |
4283 | subsequent square bracket is for Objective-C taken to | |
4284 | start an expression, using the obsolete form of | |
4285 | designated initializer without '=', rather than | |
4286 | possibly being a second level of designation: in LALR | |
4287 | terms, the '[' is shifted rather than reducing | |
4288 | designator to designator-list. */ | |
4289 | if (des_prev == 1 && c_dialect_objc ()) | |
4290 | { | |
4291 | des_seen = des_prev; | |
4292 | break; | |
4293 | } | |
4294 | if (des_prev == 0 && c_dialect_objc ()) | |
4295 | { | |
4296 | /* This might be an array designator or an | |
4297 | Objective-C message expression. If the former, | |
4298 | continue parsing here; if the latter, parse the | |
4299 | remainder of the initializer given the starting | |
4300 | primary-expression. ??? It might make sense to | |
4301 | distinguish when des_prev == 1 as well; see | |
4302 | previous comment. */ | |
4303 | tree rec, args; | |
4304 | struct c_expr mexpr; | |
4305 | c_parser_consume_token (parser); | |
4306 | if (c_parser_peek_token (parser)->type == CPP_NAME | |
4307 | && ((c_parser_peek_token (parser)->id_kind | |
4308 | == C_ID_TYPENAME) | |
4309 | || (c_parser_peek_token (parser)->id_kind | |
4310 | == C_ID_CLASSNAME))) | |
4311 | { | |
4312 | /* Type name receiver. */ | |
4313 | tree id = c_parser_peek_token (parser)->value; | |
4314 | c_parser_consume_token (parser); | |
4315 | rec = objc_get_class_reference (id); | |
4316 | goto parse_message_args; | |
4317 | } | |
4318 | first = c_parser_expr_no_commas (parser, NULL).value; | |
ebfbbdc5 | 4319 | mark_exp_read (first); |
27bf414c JM |
4320 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS) |
4321 | || c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
4322 | goto array_desig_after_first; | |
4323 | /* Expression receiver. So far only one part | |
4324 | without commas has been parsed; there might be | |
4325 | more of the expression. */ | |
4326 | rec = first; | |
4327 | while (c_parser_next_token_is (parser, CPP_COMMA)) | |
4328 | { | |
f2a71bbc | 4329 | struct c_expr next; |
c2255bc4 AH |
4330 | location_t comma_loc, exp_loc; |
4331 | comma_loc = c_parser_peek_token (parser)->location; | |
27bf414c | 4332 | c_parser_consume_token (parser); |
c2255bc4 | 4333 | exp_loc = c_parser_peek_token (parser)->location; |
f2a71bbc | 4334 | next = c_parser_expr_no_commas (parser, NULL); |
267bac10 JM |
4335 | next = convert_lvalue_to_rvalue (exp_loc, next, |
4336 | true, true); | |
c2255bc4 | 4337 | rec = build_compound_expr (comma_loc, rec, next.value); |
27bf414c JM |
4338 | } |
4339 | parse_message_args: | |
4340 | /* Now parse the objc-message-args. */ | |
4341 | args = c_parser_objc_message_args (parser); | |
4342 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
4343 | "expected %<]%>"); | |
4344 | mexpr.value | |
eb345401 | 4345 | = objc_build_message_expr (rec, args); |
27bf414c | 4346 | mexpr.original_code = ERROR_MARK; |
6866c6e8 | 4347 | mexpr.original_type = NULL; |
27bf414c JM |
4348 | /* Now parse and process the remainder of the |
4349 | initializer, starting with this message | |
4350 | expression as a primary-expression. */ | |
a1e3b3d9 | 4351 | c_parser_initval (parser, &mexpr, braced_init_obstack); |
27bf414c JM |
4352 | return; |
4353 | } | |
4354 | c_parser_consume_token (parser); | |
ea58ef42 | 4355 | array_index_loc = c_parser_peek_token (parser)->location; |
27bf414c | 4356 | first = c_parser_expr_no_commas (parser, NULL).value; |
ebfbbdc5 | 4357 | mark_exp_read (first); |
27bf414c JM |
4358 | array_desig_after_first: |
4359 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
4360 | { | |
c7412148 | 4361 | ellipsis_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
4362 | c_parser_consume_token (parser); |
4363 | second = c_parser_expr_no_commas (parser, NULL).value; | |
ebfbbdc5 | 4364 | mark_exp_read (second); |
27bf414c JM |
4365 | } |
4366 | else | |
4367 | second = NULL_TREE; | |
4368 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
4369 | { | |
4370 | c_parser_consume_token (parser); | |
ea58ef42 MP |
4371 | set_init_index (array_index_loc, first, second, |
4372 | braced_init_obstack); | |
fcf73884 | 4373 | if (second) |
c1771a20 | 4374 | pedwarn (ellipsis_loc, OPT_Wpedantic, |
509c9d60 | 4375 | "ISO C forbids specifying range of elements to initialize"); |
27bf414c JM |
4376 | } |
4377 | else | |
4378 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
4379 | "expected %<]%>"); | |
4380 | } | |
4381 | } | |
4382 | if (des_seen >= 1) | |
4383 | { | |
4384 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
4385 | { | |
f3bede71 MP |
4386 | pedwarn_c90 (des_loc, OPT_Wpedantic, |
4387 | "ISO C90 forbids specifying subobject " | |
4388 | "to initialize"); | |
27bf414c JM |
4389 | c_parser_consume_token (parser); |
4390 | } | |
4391 | else | |
4392 | { | |
4393 | if (des_seen == 1) | |
c1771a20 | 4394 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 4395 | "obsolete use of designated initializer without %<=%>"); |
27bf414c JM |
4396 | else |
4397 | { | |
4398 | struct c_expr init; | |
4399 | init.value = error_mark_node; | |
4400 | init.original_code = ERROR_MARK; | |
6866c6e8 | 4401 | init.original_type = NULL; |
27bf414c JM |
4402 | c_parser_error (parser, "expected %<=%>"); |
4403 | c_parser_skip_until_found (parser, CPP_COMMA, NULL); | |
34cf811f MP |
4404 | process_init_element (input_location, init, false, |
4405 | braced_init_obstack); | |
27bf414c JM |
4406 | return; |
4407 | } | |
4408 | } | |
4409 | } | |
4410 | } | |
a1e3b3d9 | 4411 | c_parser_initval (parser, NULL, braced_init_obstack); |
27bf414c JM |
4412 | } |
4413 | ||
4414 | /* Parse a nested initializer; as c_parser_initializer but parses | |
4415 | initializers within braced lists, after any designators have been | |
4416 | applied. If AFTER is not NULL then it is an Objective-C message | |
4417 | expression which is the primary-expression starting the | |
4418 | initializer. */ | |
4419 | ||
4420 | static void | |
a1e3b3d9 LB |
4421 | c_parser_initval (c_parser *parser, struct c_expr *after, |
4422 | struct obstack * braced_init_obstack) | |
27bf414c JM |
4423 | { |
4424 | struct c_expr init; | |
4425 | gcc_assert (!after || c_dialect_objc ()); | |
34cf811f MP |
4426 | location_t loc = c_parser_peek_token (parser)->location; |
4427 | ||
27bf414c JM |
4428 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE) && !after) |
4429 | init = c_parser_braced_init (parser, NULL_TREE, true); | |
4430 | else | |
46bdb9cf JM |
4431 | { |
4432 | init = c_parser_expr_no_commas (parser, after); | |
4433 | if (init.value != NULL_TREE | |
4434 | && TREE_CODE (init.value) != STRING_CST | |
4435 | && TREE_CODE (init.value) != COMPOUND_LITERAL_EXPR) | |
267bac10 | 4436 | init = convert_lvalue_to_rvalue (loc, init, true, true); |
46bdb9cf | 4437 | } |
34cf811f | 4438 | process_init_element (loc, init, false, braced_init_obstack); |
27bf414c JM |
4439 | } |
4440 | ||
4441 | /* Parse a compound statement (possibly a function body) (C90 6.6.2, | |
4442 | C99 6.8.2). | |
4443 | ||
4444 | compound-statement: | |
4445 | { block-item-list[opt] } | |
4446 | { label-declarations block-item-list } | |
4447 | ||
4448 | block-item-list: | |
4449 | block-item | |
4450 | block-item-list block-item | |
4451 | ||
4452 | block-item: | |
4453 | nested-declaration | |
4454 | statement | |
4455 | ||
4456 | nested-declaration: | |
4457 | declaration | |
4458 | ||
4459 | GNU extensions: | |
4460 | ||
4461 | compound-statement: | |
4462 | { label-declarations block-item-list } | |
4463 | ||
4464 | nested-declaration: | |
4465 | __extension__ nested-declaration | |
4466 | nested-function-definition | |
4467 | ||
4468 | label-declarations: | |
4469 | label-declaration | |
4470 | label-declarations label-declaration | |
4471 | ||
4472 | label-declaration: | |
4473 | __label__ identifier-list ; | |
4474 | ||
4475 | Allowing the mixing of declarations and code is new in C99. The | |
4476 | GNU syntax also permits (not shown above) labels at the end of | |
4477 | compound statements, which yield an error. We don't allow labels | |
4478 | on declarations; this might seem like a natural extension, but | |
4479 | there would be a conflict between attributes on the label and | |
4480 | prefix attributes on the declaration. ??? The syntax follows the | |
4481 | old parser in requiring something after label declarations. | |
4482 | Although they are erroneous if the labels declared aren't defined, | |
953ff289 | 4483 | is it useful for the syntax to be this way? |
b8698a0f | 4484 | |
953ff289 | 4485 | OpenMP: |
b8698a0f | 4486 | |
953ff289 DN |
4487 | block-item: |
4488 | openmp-directive | |
4489 | ||
4490 | openmp-directive: | |
4491 | barrier-directive | |
acf0174b JJ |
4492 | flush-directive |
4493 | taskwait-directive | |
4494 | taskyield-directive | |
4495 | cancel-directive | |
4496 | cancellation-point-directive */ | |
27bf414c JM |
4497 | |
4498 | static tree | |
4499 | c_parser_compound_statement (c_parser *parser) | |
4500 | { | |
4501 | tree stmt; | |
c2255bc4 AH |
4502 | location_t brace_loc; |
4503 | brace_loc = c_parser_peek_token (parser)->location; | |
27bf414c | 4504 | if (!c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) |
5600f233 JM |
4505 | { |
4506 | /* Ensure a scope is entered and left anyway to avoid confusion | |
4507 | if we have just prepared to enter a function body. */ | |
4508 | stmt = c_begin_compound_stmt (true); | |
c2255bc4 | 4509 | c_end_compound_stmt (brace_loc, stmt, true); |
5600f233 JM |
4510 | return error_mark_node; |
4511 | } | |
27bf414c JM |
4512 | stmt = c_begin_compound_stmt (true); |
4513 | c_parser_compound_statement_nostart (parser); | |
36536d79 BI |
4514 | |
4515 | /* If the compound stmt contains array notations, then we expand them. */ | |
b72271b9 | 4516 | if (flag_cilkplus && contains_array_notation_expr (stmt)) |
36536d79 | 4517 | stmt = expand_array_notation_exprs (stmt); |
c2255bc4 | 4518 | return c_end_compound_stmt (brace_loc, stmt, true); |
27bf414c JM |
4519 | } |
4520 | ||
4521 | /* Parse a compound statement except for the opening brace. This is | |
4522 | used for parsing both compound statements and statement expressions | |
4523 | (which follow different paths to handling the opening). */ | |
4524 | ||
4525 | static void | |
4526 | c_parser_compound_statement_nostart (c_parser *parser) | |
4527 | { | |
4528 | bool last_stmt = false; | |
4529 | bool last_label = false; | |
6ec637a4 | 4530 | bool save_valid_for_pragma = valid_location_for_stdc_pragma_p (); |
3ba09659 | 4531 | location_t label_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
4532 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) |
4533 | { | |
4534 | c_parser_consume_token (parser); | |
4535 | return; | |
4536 | } | |
6ec637a4 | 4537 | mark_valid_location_for_stdc_pragma (true); |
27bf414c JM |
4538 | if (c_parser_next_token_is_keyword (parser, RID_LABEL)) |
4539 | { | |
4540 | /* Read zero or more forward-declarations for labels that nested | |
4541 | functions can jump to. */ | |
6ec637a4 | 4542 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
4543 | while (c_parser_next_token_is_keyword (parser, RID_LABEL)) |
4544 | { | |
c2255bc4 | 4545 | label_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
4546 | c_parser_consume_token (parser); |
4547 | /* Any identifiers, including those declared as type names, | |
4548 | are OK here. */ | |
4549 | while (true) | |
4550 | { | |
4551 | tree label; | |
4552 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
4553 | { | |
4554 | c_parser_error (parser, "expected identifier"); | |
4555 | break; | |
4556 | } | |
4557 | label | |
4558 | = declare_label (c_parser_peek_token (parser)->value); | |
4559 | C_DECLARED_LABEL_FLAG (label) = 1; | |
c2255bc4 | 4560 | add_stmt (build_stmt (label_loc, DECL_EXPR, label)); |
27bf414c JM |
4561 | c_parser_consume_token (parser); |
4562 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
4563 | c_parser_consume_token (parser); | |
4564 | else | |
4565 | break; | |
4566 | } | |
4567 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
4568 | } | |
c1771a20 | 4569 | pedwarn (label_loc, OPT_Wpedantic, "ISO C forbids label declarations"); |
27bf414c JM |
4570 | } |
4571 | /* We must now have at least one statement, label or declaration. */ | |
4572 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
4573 | { | |
6ec637a4 | 4574 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
27bf414c JM |
4575 | c_parser_error (parser, "expected declaration or statement"); |
4576 | c_parser_consume_token (parser); | |
4577 | return; | |
4578 | } | |
4579 | while (c_parser_next_token_is_not (parser, CPP_CLOSE_BRACE)) | |
4580 | { | |
4581 | location_t loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
4582 | if (c_parser_next_token_is_keyword (parser, RID_CASE) |
4583 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4584 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4585 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4586 | { | |
c7412148 TT |
4587 | if (c_parser_next_token_is_keyword (parser, RID_CASE)) |
4588 | label_loc = c_parser_peek_2nd_token (parser)->location; | |
4589 | else | |
4590 | label_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
4591 | last_label = true; |
4592 | last_stmt = false; | |
6ec637a4 | 4593 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
4594 | c_parser_label (parser); |
4595 | } | |
4596 | else if (!last_label | |
2f413185 | 4597 | && c_parser_next_tokens_start_declaration (parser)) |
27bf414c JM |
4598 | { |
4599 | last_label = false; | |
6ec637a4 | 4600 | mark_valid_location_for_stdc_pragma (false); |
acf0174b JJ |
4601 | c_parser_declaration_or_fndef (parser, true, true, true, true, |
4602 | true, NULL, vNULL); | |
fcf73884 | 4603 | if (last_stmt) |
177cce46 | 4604 | pedwarn_c90 (loc, OPT_Wdeclaration_after_statement, |
509c9d60 | 4605 | "ISO C90 forbids mixed declarations and code"); |
27bf414c JM |
4606 | last_stmt = false; |
4607 | } | |
4608 | else if (!last_label | |
4609 | && c_parser_next_token_is_keyword (parser, RID_EXTENSION)) | |
4610 | { | |
4611 | /* __extension__ can start a declaration, but is also an | |
4612 | unary operator that can start an expression. Consume all | |
4613 | but the last of a possible series of __extension__ to | |
4614 | determine which. */ | |
4615 | while (c_parser_peek_2nd_token (parser)->type == CPP_KEYWORD | |
4616 | && (c_parser_peek_2nd_token (parser)->keyword | |
4617 | == RID_EXTENSION)) | |
4618 | c_parser_consume_token (parser); | |
32912286 | 4619 | if (c_token_starts_declaration (c_parser_peek_2nd_token (parser))) |
27bf414c JM |
4620 | { |
4621 | int ext; | |
4622 | ext = disable_extension_diagnostics (); | |
4623 | c_parser_consume_token (parser); | |
4624 | last_label = false; | |
6ec637a4 | 4625 | mark_valid_location_for_stdc_pragma (false); |
32912286 | 4626 | c_parser_declaration_or_fndef (parser, true, true, true, true, |
acf0174b | 4627 | true, NULL, vNULL); |
27bf414c JM |
4628 | /* Following the old parser, __extension__ does not |
4629 | disable this diagnostic. */ | |
4630 | restore_extension_diagnostics (ext); | |
fcf73884 | 4631 | if (last_stmt) |
177cce46 | 4632 | pedwarn_c90 (loc, OPT_Wdeclaration_after_statement, |
509c9d60 | 4633 | "ISO C90 forbids mixed declarations and code"); |
27bf414c JM |
4634 | last_stmt = false; |
4635 | } | |
4636 | else | |
4637 | goto statement; | |
4638 | } | |
bc4071dd RH |
4639 | else if (c_parser_next_token_is (parser, CPP_PRAGMA)) |
4640 | { | |
4641 | /* External pragmas, and some omp pragmas, are not associated | |
4642 | with regular c code, and so are not to be considered statements | |
4643 | syntactically. This ensures that the user doesn't put them | |
4644 | places that would turn into syntax errors if the directive | |
4645 | were ignored. */ | |
4646 | if (c_parser_pragma (parser, pragma_compound)) | |
4647 | last_label = false, last_stmt = true; | |
4648 | } | |
4649 | else if (c_parser_next_token_is (parser, CPP_EOF)) | |
4650 | { | |
6ec637a4 | 4651 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
bc4071dd RH |
4652 | c_parser_error (parser, "expected declaration or statement"); |
4653 | return; | |
4654 | } | |
b4b56033 MLI |
4655 | else if (c_parser_next_token_is_keyword (parser, RID_ELSE)) |
4656 | { | |
b8698a0f | 4657 | if (parser->in_if_block) |
b4b56033 | 4658 | { |
6ec637a4 | 4659 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); |
3ba09659 | 4660 | error_at (loc, """expected %<}%> before %<else%>"); |
b4b56033 MLI |
4661 | return; |
4662 | } | |
b8698a0f | 4663 | else |
b4b56033 | 4664 | { |
3ba09659 | 4665 | error_at (loc, "%<else%> without a previous %<if%>"); |
b4b56033 MLI |
4666 | c_parser_consume_token (parser); |
4667 | continue; | |
4668 | } | |
4669 | } | |
27bf414c JM |
4670 | else |
4671 | { | |
4672 | statement: | |
4673 | last_label = false; | |
4674 | last_stmt = true; | |
6ec637a4 | 4675 | mark_valid_location_for_stdc_pragma (false); |
27bf414c JM |
4676 | c_parser_statement_after_labels (parser); |
4677 | } | |
2c14ae9a VR |
4678 | |
4679 | parser->error = false; | |
27bf414c JM |
4680 | } |
4681 | if (last_label) | |
3ba09659 | 4682 | error_at (label_loc, "label at end of compound statement"); |
27bf414c | 4683 | c_parser_consume_token (parser); |
6ec637a4 JJ |
4684 | /* Restore the value we started with. */ |
4685 | mark_valid_location_for_stdc_pragma (save_valid_for_pragma); | |
27bf414c JM |
4686 | } |
4687 | ||
74d98c1e AB |
4688 | /* Parse all consecutive labels. */ |
4689 | ||
4690 | static void | |
4691 | c_parser_all_labels (c_parser *parser) | |
4692 | { | |
4693 | while (c_parser_next_token_is_keyword (parser, RID_CASE) | |
4694 | || c_parser_next_token_is_keyword (parser, RID_DEFAULT) | |
4695 | || (c_parser_next_token_is (parser, CPP_NAME) | |
4696 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON)) | |
4697 | c_parser_label (parser); | |
4698 | } | |
4699 | ||
27bf414c JM |
4700 | /* Parse a label (C90 6.6.1, C99 6.8.1). |
4701 | ||
4702 | label: | |
4703 | identifier : attributes[opt] | |
4704 | case constant-expression : | |
4705 | default : | |
4706 | ||
4707 | GNU extensions: | |
4708 | ||
4709 | label: | |
4710 | case constant-expression ... constant-expression : | |
4711 | ||
4712 | The use of attributes on labels is a GNU extension. The syntax in | |
4713 | GNU C accepts any expressions without commas, non-constant | |
4714 | expressions being rejected later. */ | |
4715 | ||
4716 | static void | |
4717 | c_parser_label (c_parser *parser) | |
4718 | { | |
4719 | location_t loc1 = c_parser_peek_token (parser)->location; | |
4720 | tree label = NULL_TREE; | |
4721 | if (c_parser_next_token_is_keyword (parser, RID_CASE)) | |
4722 | { | |
4723 | tree exp1, exp2; | |
4724 | c_parser_consume_token (parser); | |
4725 | exp1 = c_parser_expr_no_commas (parser, NULL).value; | |
4726 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
4727 | { | |
4728 | c_parser_consume_token (parser); | |
c2255bc4 | 4729 | label = do_case (loc1, exp1, NULL_TREE); |
27bf414c JM |
4730 | } |
4731 | else if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
4732 | { | |
4733 | c_parser_consume_token (parser); | |
4734 | exp2 = c_parser_expr_no_commas (parser, NULL).value; | |
4735 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
c2255bc4 | 4736 | label = do_case (loc1, exp1, exp2); |
27bf414c JM |
4737 | } |
4738 | else | |
4739 | c_parser_error (parser, "expected %<:%> or %<...%>"); | |
4740 | } | |
4741 | else if (c_parser_next_token_is_keyword (parser, RID_DEFAULT)) | |
4742 | { | |
4743 | c_parser_consume_token (parser); | |
4744 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
c2255bc4 | 4745 | label = do_case (loc1, NULL_TREE, NULL_TREE); |
27bf414c JM |
4746 | } |
4747 | else | |
4748 | { | |
4749 | tree name = c_parser_peek_token (parser)->value; | |
4750 | tree tlab; | |
27bf414c | 4751 | tree attrs; |
c7412148 | 4752 | location_t loc2 = c_parser_peek_token (parser)->location; |
27bf414c JM |
4753 | gcc_assert (c_parser_next_token_is (parser, CPP_NAME)); |
4754 | c_parser_consume_token (parser); | |
4755 | gcc_assert (c_parser_next_token_is (parser, CPP_COLON)); | |
27bf414c JM |
4756 | c_parser_consume_token (parser); |
4757 | attrs = c_parser_attributes (parser); | |
4758 | tlab = define_label (loc2, name); | |
4759 | if (tlab) | |
4760 | { | |
4761 | decl_attributes (&tlab, attrs, 0); | |
c2255bc4 | 4762 | label = add_stmt (build_stmt (loc1, LABEL_EXPR, tlab)); |
27bf414c JM |
4763 | } |
4764 | } | |
4765 | if (label) | |
3d57f0f0 | 4766 | { |
2f413185 | 4767 | if (c_parser_next_tokens_start_declaration (parser)) |
3d57f0f0 | 4768 | { |
3ba09659 AH |
4769 | error_at (c_parser_peek_token (parser)->location, |
4770 | "a label can only be part of a statement and " | |
4771 | "a declaration is not a statement"); | |
b8698a0f | 4772 | c_parser_declaration_or_fndef (parser, /*fndef_ok*/ false, |
32912286 | 4773 | /*static_assert_ok*/ true, |
6265d07c | 4774 | /*empty_ok*/ true, /*nested*/ true, |
acf0174b JJ |
4775 | /*start_attr_ok*/ true, NULL, |
4776 | vNULL); | |
3d57f0f0 MLI |
4777 | } |
4778 | } | |
27bf414c JM |
4779 | } |
4780 | ||
4781 | /* Parse a statement (C90 6.6, C99 6.8). | |
4782 | ||
4783 | statement: | |
4784 | labeled-statement | |
4785 | compound-statement | |
4786 | expression-statement | |
4787 | selection-statement | |
4788 | iteration-statement | |
4789 | jump-statement | |
4790 | ||
4791 | labeled-statement: | |
4792 | label statement | |
4793 | ||
4794 | expression-statement: | |
4795 | expression[opt] ; | |
4796 | ||
4797 | selection-statement: | |
4798 | if-statement | |
4799 | switch-statement | |
4800 | ||
4801 | iteration-statement: | |
4802 | while-statement | |
4803 | do-statement | |
4804 | for-statement | |
4805 | ||
4806 | jump-statement: | |
4807 | goto identifier ; | |
4808 | continue ; | |
4809 | break ; | |
4810 | return expression[opt] ; | |
4811 | ||
4812 | GNU extensions: | |
4813 | ||
4814 | statement: | |
4815 | asm-statement | |
4816 | ||
4817 | jump-statement: | |
4818 | goto * expression ; | |
4819 | ||
4820 | Objective-C: | |
4821 | ||
4822 | statement: | |
4823 | objc-throw-statement | |
4824 | objc-try-catch-statement | |
4825 | objc-synchronized-statement | |
4826 | ||
4827 | objc-throw-statement: | |
4828 | @throw expression ; | |
4829 | @throw ; | |
953ff289 DN |
4830 | |
4831 | OpenMP: | |
4832 | ||
4833 | statement: | |
4834 | openmp-construct | |
4835 | ||
4836 | openmp-construct: | |
4837 | parallel-construct | |
4838 | for-construct | |
acf0174b JJ |
4839 | simd-construct |
4840 | for-simd-construct | |
953ff289 DN |
4841 | sections-construct |
4842 | single-construct | |
4843 | parallel-for-construct | |
acf0174b | 4844 | parallel-for-simd-construct |
953ff289 DN |
4845 | parallel-sections-construct |
4846 | master-construct | |
4847 | critical-construct | |
4848 | atomic-construct | |
4849 | ordered-construct | |
4850 | ||
4851 | parallel-construct: | |
4852 | parallel-directive structured-block | |
4853 | ||
4854 | for-construct: | |
4855 | for-directive iteration-statement | |
4856 | ||
acf0174b JJ |
4857 | simd-construct: |
4858 | simd-directive iteration-statements | |
4859 | ||
4860 | for-simd-construct: | |
4861 | for-simd-directive iteration-statements | |
4862 | ||
953ff289 DN |
4863 | sections-construct: |
4864 | sections-directive section-scope | |
4865 | ||
4866 | single-construct: | |
4867 | single-directive structured-block | |
4868 | ||
4869 | parallel-for-construct: | |
4870 | parallel-for-directive iteration-statement | |
4871 | ||
acf0174b JJ |
4872 | parallel-for-simd-construct: |
4873 | parallel-for-simd-directive iteration-statement | |
4874 | ||
953ff289 DN |
4875 | parallel-sections-construct: |
4876 | parallel-sections-directive section-scope | |
4877 | ||
4878 | master-construct: | |
4879 | master-directive structured-block | |
4880 | ||
4881 | critical-construct: | |
4882 | critical-directive structured-block | |
4883 | ||
4884 | atomic-construct: | |
4885 | atomic-directive expression-statement | |
4886 | ||
4887 | ordered-construct: | |
0a35513e AH |
4888 | ordered-directive structured-block |
4889 | ||
4890 | Transactional Memory: | |
4891 | ||
4892 | statement: | |
4893 | transaction-statement | |
4894 | transaction-cancel-statement | |
4895 | */ | |
27bf414c JM |
4896 | |
4897 | static void | |
4898 | c_parser_statement (c_parser *parser) | |
4899 | { | |
74d98c1e | 4900 | c_parser_all_labels (parser); |
27bf414c JM |
4901 | c_parser_statement_after_labels (parser); |
4902 | } | |
4903 | ||
4904 | /* Parse a statement, other than a labeled statement. */ | |
4905 | ||
4906 | static void | |
4907 | c_parser_statement_after_labels (c_parser *parser) | |
4908 | { | |
4909 | location_t loc = c_parser_peek_token (parser)->location; | |
4910 | tree stmt = NULL_TREE; | |
b4b56033 MLI |
4911 | bool in_if_block = parser->in_if_block; |
4912 | parser->in_if_block = false; | |
27bf414c JM |
4913 | switch (c_parser_peek_token (parser)->type) |
4914 | { | |
4915 | case CPP_OPEN_BRACE: | |
4916 | add_stmt (c_parser_compound_statement (parser)); | |
4917 | break; | |
4918 | case CPP_KEYWORD: | |
4919 | switch (c_parser_peek_token (parser)->keyword) | |
4920 | { | |
4921 | case RID_IF: | |
4922 | c_parser_if_statement (parser); | |
4923 | break; | |
4924 | case RID_SWITCH: | |
4925 | c_parser_switch_statement (parser); | |
4926 | break; | |
4927 | case RID_WHILE: | |
d4af74d4 | 4928 | c_parser_while_statement (parser, false); |
27bf414c JM |
4929 | break; |
4930 | case RID_DO: | |
d4af74d4 | 4931 | c_parser_do_statement (parser, false); |
27bf414c JM |
4932 | break; |
4933 | case RID_FOR: | |
8170608b | 4934 | c_parser_for_statement (parser, false); |
27bf414c | 4935 | break; |
9a771876 JJ |
4936 | case RID_CILK_FOR: |
4937 | if (!flag_cilkplus) | |
4938 | { | |
4939 | error_at (c_parser_peek_token (parser)->location, | |
4940 | "-fcilkplus must be enabled to use %<_Cilk_for%>"); | |
4941 | c_parser_skip_to_end_of_block_or_statement (parser); | |
4942 | } | |
4943 | else | |
4944 | c_parser_cilk_for (parser, integer_zero_node); | |
4945 | break; | |
939b37da BI |
4946 | case RID_CILK_SYNC: |
4947 | c_parser_consume_token (parser); | |
4948 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
b72271b9 | 4949 | if (!flag_cilkplus) |
939b37da BI |
4950 | error_at (loc, "-fcilkplus must be enabled to use %<_Cilk_sync%>"); |
4951 | else | |
4952 | add_stmt (build_cilk_sync ()); | |
4953 | break; | |
27bf414c JM |
4954 | case RID_GOTO: |
4955 | c_parser_consume_token (parser); | |
4956 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
4957 | { | |
c2255bc4 AH |
4958 | stmt = c_finish_goto_label (loc, |
4959 | c_parser_peek_token (parser)->value); | |
27bf414c JM |
4960 | c_parser_consume_token (parser); |
4961 | } | |
4962 | else if (c_parser_next_token_is (parser, CPP_MULT)) | |
4963 | { | |
267bac10 | 4964 | struct c_expr val; |
84628aa8 | 4965 | |
27bf414c | 4966 | c_parser_consume_token (parser); |
267bac10 | 4967 | val = c_parser_expression (parser); |
e5e44252 AK |
4968 | if (check_no_cilk (val.value, |
4969 | "Cilk array notation cannot be used as a computed goto expression", | |
4970 | "%<_Cilk_spawn%> statement cannot be used as a computed goto expression", | |
4971 | loc)) | |
4972 | val.value = error_mark_node; | |
267bac10 JM |
4973 | val = convert_lvalue_to_rvalue (loc, val, false, true); |
4974 | stmt = c_finish_goto_ptr (loc, val.value); | |
27bf414c JM |
4975 | } |
4976 | else | |
4977 | c_parser_error (parser, "expected identifier or %<*%>"); | |
4978 | goto expect_semicolon; | |
4979 | case RID_CONTINUE: | |
4980 | c_parser_consume_token (parser); | |
c2255bc4 | 4981 | stmt = c_finish_bc_stmt (loc, &c_cont_label, false); |
27bf414c JM |
4982 | goto expect_semicolon; |
4983 | case RID_BREAK: | |
4984 | c_parser_consume_token (parser); | |
c2255bc4 | 4985 | stmt = c_finish_bc_stmt (loc, &c_break_label, true); |
27bf414c JM |
4986 | goto expect_semicolon; |
4987 | case RID_RETURN: | |
4988 | c_parser_consume_token (parser); | |
4989 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
4990 | { | |
c2255bc4 | 4991 | stmt = c_finish_return (loc, NULL_TREE, NULL_TREE); |
27bf414c JM |
4992 | c_parser_consume_token (parser); |
4993 | } | |
4994 | else | |
4995 | { | |
6e07c515 | 4996 | location_t xloc = c_parser_peek_token (parser)->location; |
bbbbb16a | 4997 | struct c_expr expr = c_parser_expression_conv (parser); |
ebfbbdc5 | 4998 | mark_exp_read (expr.value); |
6e07c515 | 4999 | stmt = c_finish_return (xloc, expr.value, expr.original_type); |
27bf414c JM |
5000 | goto expect_semicolon; |
5001 | } | |
5002 | break; | |
5003 | case RID_ASM: | |
5004 | stmt = c_parser_asm_statement (parser); | |
5005 | break; | |
0a35513e AH |
5006 | case RID_TRANSACTION_ATOMIC: |
5007 | case RID_TRANSACTION_RELAXED: | |
5008 | stmt = c_parser_transaction (parser, | |
5009 | c_parser_peek_token (parser)->keyword); | |
5010 | break; | |
5011 | case RID_TRANSACTION_CANCEL: | |
5012 | stmt = c_parser_transaction_cancel (parser); | |
5013 | goto expect_semicolon; | |
49b91f05 | 5014 | case RID_AT_THROW: |
27bf414c JM |
5015 | gcc_assert (c_dialect_objc ()); |
5016 | c_parser_consume_token (parser); | |
5017 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
5018 | { | |
c2255bc4 | 5019 | stmt = objc_build_throw_stmt (loc, NULL_TREE); |
27bf414c JM |
5020 | c_parser_consume_token (parser); |
5021 | } | |
5022 | else | |
5023 | { | |
267bac10 JM |
5024 | struct c_expr expr = c_parser_expression (parser); |
5025 | expr = convert_lvalue_to_rvalue (loc, expr, false, false); | |
e5e44252 AK |
5026 | if (check_no_cilk (expr.value, |
5027 | "Cilk array notation cannot be used for a throw expression", | |
5028 | "%<_Cilk_spawn%> statement cannot be used for a throw expression")) | |
5029 | expr.value = error_mark_node; | |
5030 | else | |
5031 | { | |
5032 | expr.value = c_fully_fold (expr.value, false, NULL); | |
5033 | stmt = objc_build_throw_stmt (loc, expr.value); | |
5034 | } | |
27bf414c JM |
5035 | goto expect_semicolon; |
5036 | } | |
5037 | break; | |
49b91f05 | 5038 | case RID_AT_TRY: |
27bf414c | 5039 | gcc_assert (c_dialect_objc ()); |
437c2322 | 5040 | c_parser_objc_try_catch_finally_statement (parser); |
27bf414c JM |
5041 | break; |
5042 | case RID_AT_SYNCHRONIZED: | |
5043 | gcc_assert (c_dialect_objc ()); | |
5044 | c_parser_objc_synchronized_statement (parser); | |
5045 | break; | |
5046 | default: | |
5047 | goto expr_stmt; | |
5048 | } | |
5049 | break; | |
5050 | case CPP_SEMICOLON: | |
5051 | c_parser_consume_token (parser); | |
5052 | break; | |
5053 | case CPP_CLOSE_PAREN: | |
5054 | case CPP_CLOSE_SQUARE: | |
5055 | /* Avoid infinite loop in error recovery: | |
5056 | c_parser_skip_until_found stops at a closing nesting | |
5057 | delimiter without consuming it, but here we need to consume | |
5058 | it to proceed further. */ | |
5059 | c_parser_error (parser, "expected statement"); | |
5060 | c_parser_consume_token (parser); | |
5061 | break; | |
bc4071dd RH |
5062 | case CPP_PRAGMA: |
5063 | c_parser_pragma (parser, pragma_stmt); | |
5064 | break; | |
27bf414c JM |
5065 | default: |
5066 | expr_stmt: | |
c2255bc4 | 5067 | stmt = c_finish_expr_stmt (loc, c_parser_expression_conv (parser).value); |
27bf414c JM |
5068 | expect_semicolon: |
5069 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
5070 | break; | |
5071 | } | |
5072 | /* Two cases cannot and do not have line numbers associated: If stmt | |
5073 | is degenerate, such as "2;", then stmt is an INTEGER_CST, which | |
5074 | cannot hold line numbers. But that's OK because the statement | |
5075 | will either be changed to a MODIFY_EXPR during gimplification of | |
5076 | the statement expr, or discarded. If stmt was compound, but | |
5077 | without new variables, we will have skipped the creation of a | |
5078 | BIND and will have a bare STATEMENT_LIST. But that's OK because | |
5079 | (recursively) all of the component statements should already have | |
5080 | line numbers assigned. ??? Can we discard no-op statements | |
5081 | earlier? */ | |
c2255bc4 AH |
5082 | if (CAN_HAVE_LOCATION_P (stmt) |
5083 | && EXPR_LOCATION (stmt) == UNKNOWN_LOCATION) | |
5084 | SET_EXPR_LOCATION (stmt, loc); | |
b4b56033 MLI |
5085 | |
5086 | parser->in_if_block = in_if_block; | |
27bf414c JM |
5087 | } |
5088 | ||
ca085fd7 MLI |
5089 | /* Parse the condition from an if, do, while or for statements. */ |
5090 | ||
5091 | static tree | |
5092 | c_parser_condition (c_parser *parser) | |
5093 | { | |
c2255bc4 | 5094 | location_t loc = c_parser_peek_token (parser)->location; |
ca085fd7 | 5095 | tree cond; |
928c19bb JM |
5096 | cond = c_parser_expression_conv (parser).value; |
5097 | cond = c_objc_common_truthvalue_conversion (loc, cond); | |
5098 | cond = c_fully_fold (cond, false, NULL); | |
ca085fd7 MLI |
5099 | if (warn_sequence_point) |
5100 | verify_sequence_points (cond); | |
5101 | return cond; | |
5102 | } | |
5103 | ||
27bf414c JM |
5104 | /* Parse a parenthesized condition from an if, do or while statement. |
5105 | ||
5106 | condition: | |
5107 | ( expression ) | |
5108 | */ | |
5109 | static tree | |
5110 | c_parser_paren_condition (c_parser *parser) | |
5111 | { | |
27bf414c JM |
5112 | tree cond; |
5113 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
5114 | return error_mark_node; | |
ca085fd7 | 5115 | cond = c_parser_condition (parser); |
27bf414c JM |
5116 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
5117 | return cond; | |
5118 | } | |
5119 | ||
5120 | /* Parse a statement which is a block in C99. */ | |
5121 | ||
5122 | static tree | |
5123 | c_parser_c99_block_statement (c_parser *parser) | |
5124 | { | |
5125 | tree block = c_begin_compound_stmt (flag_isoc99); | |
c2255bc4 | 5126 | location_t loc = c_parser_peek_token (parser)->location; |
27bf414c | 5127 | c_parser_statement (parser); |
c2255bc4 | 5128 | return c_end_compound_stmt (loc, block, flag_isoc99); |
27bf414c JM |
5129 | } |
5130 | ||
b4b56033 MLI |
5131 | /* Parse the body of an if statement. This is just parsing a |
5132 | statement but (a) it is a block in C99, (b) we track whether the | |
5133 | body is an if statement for the sake of -Wparentheses warnings, (c) | |
5134 | we handle an empty body specially for the sake of -Wempty-body | |
5135 | warnings, and (d) we call parser_compound_statement directly | |
5136 | because c_parser_statement_after_labels resets | |
5137 | parser->in_if_block. */ | |
27bf414c JM |
5138 | |
5139 | static tree | |
5140 | c_parser_if_body (c_parser *parser, bool *if_p) | |
5141 | { | |
5142 | tree block = c_begin_compound_stmt (flag_isoc99); | |
c2255bc4 | 5143 | location_t body_loc = c_parser_peek_token (parser)->location; |
74d98c1e | 5144 | c_parser_all_labels (parser); |
27bf414c | 5145 | *if_p = c_parser_next_token_is_keyword (parser, RID_IF); |
62e00e94 | 5146 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
b4b56033 | 5147 | { |
626c34b5 | 5148 | location_t loc = c_parser_peek_token (parser)->location; |
c2255bc4 | 5149 | add_stmt (build_empty_stmt (loc)); |
b4b56033 | 5150 | c_parser_consume_token (parser); |
626c34b5 PB |
5151 | if (!c_parser_next_token_is_keyword (parser, RID_ELSE)) |
5152 | warning_at (loc, OPT_Wempty_body, | |
5153 | "suggest braces around empty body in an %<if%> statement"); | |
b4b56033 MLI |
5154 | } |
5155 | else if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
5156 | add_stmt (c_parser_compound_statement (parser)); | |
5157 | else | |
5158 | c_parser_statement_after_labels (parser); | |
c2255bc4 | 5159 | return c_end_compound_stmt (body_loc, block, flag_isoc99); |
b4b56033 MLI |
5160 | } |
5161 | ||
5162 | /* Parse the else body of an if statement. This is just parsing a | |
5163 | statement but (a) it is a block in C99, (b) we handle an empty body | |
5164 | specially for the sake of -Wempty-body warnings. */ | |
5165 | ||
5166 | static tree | |
5167 | c_parser_else_body (c_parser *parser) | |
5168 | { | |
c2255bc4 | 5169 | location_t else_loc = c_parser_peek_token (parser)->location; |
b4b56033 | 5170 | tree block = c_begin_compound_stmt (flag_isoc99); |
74d98c1e | 5171 | c_parser_all_labels (parser); |
b4b56033 MLI |
5172 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
5173 | { | |
c2255bc4 AH |
5174 | location_t loc = c_parser_peek_token (parser)->location; |
5175 | warning_at (loc, | |
626c34b5 PB |
5176 | OPT_Wempty_body, |
5177 | "suggest braces around empty body in an %<else%> statement"); | |
c2255bc4 | 5178 | add_stmt (build_empty_stmt (loc)); |
b4b56033 MLI |
5179 | c_parser_consume_token (parser); |
5180 | } | |
b8698a0f | 5181 | else |
b4b56033 | 5182 | c_parser_statement_after_labels (parser); |
c2255bc4 | 5183 | return c_end_compound_stmt (else_loc, block, flag_isoc99); |
27bf414c JM |
5184 | } |
5185 | ||
5186 | /* Parse an if statement (C90 6.6.4, C99 6.8.4). | |
5187 | ||
5188 | if-statement: | |
5189 | if ( expression ) statement | |
5190 | if ( expression ) statement else statement | |
5191 | */ | |
5192 | ||
5193 | static void | |
5194 | c_parser_if_statement (c_parser *parser) | |
5195 | { | |
5196 | tree block; | |
5197 | location_t loc; | |
5198 | tree cond; | |
b4b56033 | 5199 | bool first_if = false; |
27bf414c | 5200 | tree first_body, second_body; |
b4b56033 | 5201 | bool in_if_block; |
36536d79 | 5202 | tree if_stmt; |
b4b56033 | 5203 | |
27bf414c JM |
5204 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_IF)); |
5205 | c_parser_consume_token (parser); | |
5206 | block = c_begin_compound_stmt (flag_isoc99); | |
5207 | loc = c_parser_peek_token (parser)->location; | |
5208 | cond = c_parser_paren_condition (parser); | |
e5e44252 AK |
5209 | if (flag_cilkplus && contains_cilk_spawn_stmt (cond)) |
5210 | { | |
5211 | error_at (loc, "if statement cannot contain %<Cilk_spawn%>"); | |
5212 | cond = error_mark_node; | |
5213 | } | |
b4b56033 MLI |
5214 | in_if_block = parser->in_if_block; |
5215 | parser->in_if_block = true; | |
27bf414c | 5216 | first_body = c_parser_if_body (parser, &first_if); |
b4b56033 | 5217 | parser->in_if_block = in_if_block; |
27bf414c JM |
5218 | if (c_parser_next_token_is_keyword (parser, RID_ELSE)) |
5219 | { | |
5220 | c_parser_consume_token (parser); | |
b4b56033 | 5221 | second_body = c_parser_else_body (parser); |
27bf414c JM |
5222 | } |
5223 | else | |
5224 | second_body = NULL_TREE; | |
5225 | c_finish_if_stmt (loc, cond, first_body, second_body, first_if); | |
36536d79 BI |
5226 | if_stmt = c_end_compound_stmt (loc, block, flag_isoc99); |
5227 | ||
5228 | /* If the if statement contains array notations, then we expand them. */ | |
b72271b9 | 5229 | if (flag_cilkplus && contains_array_notation_expr (if_stmt)) |
36536d79 BI |
5230 | if_stmt = fix_conditional_array_notations (if_stmt); |
5231 | add_stmt (if_stmt); | |
27bf414c JM |
5232 | } |
5233 | ||
5234 | /* Parse a switch statement (C90 6.6.4, C99 6.8.4). | |
5235 | ||
5236 | switch-statement: | |
5237 | switch (expression) statement | |
5238 | */ | |
5239 | ||
5240 | static void | |
5241 | c_parser_switch_statement (c_parser *parser) | |
5242 | { | |
267bac10 | 5243 | struct c_expr ce; |
27bf414c | 5244 | tree block, expr, body, save_break; |
c2255bc4 AH |
5245 | location_t switch_loc = c_parser_peek_token (parser)->location; |
5246 | location_t switch_cond_loc; | |
27bf414c JM |
5247 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_SWITCH)); |
5248 | c_parser_consume_token (parser); | |
5249 | block = c_begin_compound_stmt (flag_isoc99); | |
fedfecef | 5250 | bool explicit_cast_p = false; |
27bf414c JM |
5251 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
5252 | { | |
c2255bc4 | 5253 | switch_cond_loc = c_parser_peek_token (parser)->location; |
fedfecef MP |
5254 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) |
5255 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
5256 | explicit_cast_p = true; | |
267bac10 JM |
5257 | ce = c_parser_expression (parser); |
5258 | ce = convert_lvalue_to_rvalue (switch_cond_loc, ce, true, false); | |
5259 | expr = ce.value; | |
e5e44252 AK |
5260 | /* ??? expr has no valid location? */ |
5261 | if (check_no_cilk (expr, | |
5262 | "Cilk array notation cannot be used as a condition for switch statement", | |
5263 | "%<_Cilk_spawn%> statement cannot be used as a condition for switch statement", | |
5264 | switch_cond_loc)) | |
5265 | expr = error_mark_node; | |
27bf414c JM |
5266 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
5267 | } | |
5268 | else | |
c2255bc4 AH |
5269 | { |
5270 | switch_cond_loc = UNKNOWN_LOCATION; | |
5271 | expr = error_mark_node; | |
5272 | } | |
fedfecef | 5273 | c_start_case (switch_loc, switch_cond_loc, expr, explicit_cast_p); |
27bf414c JM |
5274 | save_break = c_break_label; |
5275 | c_break_label = NULL_TREE; | |
5276 | body = c_parser_c99_block_statement (parser); | |
083e891e | 5277 | c_finish_case (body, ce.original_type); |
27bf414c | 5278 | if (c_break_label) |
c2255bc4 AH |
5279 | { |
5280 | location_t here = c_parser_peek_token (parser)->location; | |
5281 | tree t = build1 (LABEL_EXPR, void_type_node, c_break_label); | |
5282 | SET_EXPR_LOCATION (t, here); | |
5283 | add_stmt (t); | |
5284 | } | |
27bf414c | 5285 | c_break_label = save_break; |
c2255bc4 | 5286 | add_stmt (c_end_compound_stmt (switch_loc, block, flag_isoc99)); |
27bf414c JM |
5287 | } |
5288 | ||
5289 | /* Parse a while statement (C90 6.6.5, C99 6.8.5). | |
5290 | ||
5291 | while-statement: | |
5292 | while (expression) statement | |
5293 | */ | |
5294 | ||
5295 | static void | |
d4af74d4 | 5296 | c_parser_while_statement (c_parser *parser, bool ivdep) |
27bf414c JM |
5297 | { |
5298 | tree block, cond, body, save_break, save_cont; | |
5299 | location_t loc; | |
5300 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_WHILE)); | |
5301 | c_parser_consume_token (parser); | |
5302 | block = c_begin_compound_stmt (flag_isoc99); | |
5303 | loc = c_parser_peek_token (parser)->location; | |
5304 | cond = c_parser_paren_condition (parser); | |
e5e44252 AK |
5305 | if (check_no_cilk (cond, |
5306 | "Cilk array notation cannot be used as a condition for while statement", | |
5307 | "%<_Cilk_spawn%> statement cannot be used as a condition for while statement")) | |
5308 | cond = error_mark_node; | |
d4af74d4 TB |
5309 | if (ivdep && cond != error_mark_node) |
5310 | cond = build2 (ANNOTATE_EXPR, TREE_TYPE (cond), cond, | |
5311 | build_int_cst (integer_type_node, | |
5312 | annot_expr_ivdep_kind)); | |
27bf414c JM |
5313 | save_break = c_break_label; |
5314 | c_break_label = NULL_TREE; | |
5315 | save_cont = c_cont_label; | |
5316 | c_cont_label = NULL_TREE; | |
5317 | body = c_parser_c99_block_statement (parser); | |
5318 | c_finish_loop (loc, cond, NULL, body, c_break_label, c_cont_label, true); | |
c2255bc4 | 5319 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99)); |
27bf414c JM |
5320 | c_break_label = save_break; |
5321 | c_cont_label = save_cont; | |
5322 | } | |
5323 | ||
5324 | /* Parse a do statement (C90 6.6.5, C99 6.8.5). | |
5325 | ||
5326 | do-statement: | |
5327 | do statement while ( expression ) ; | |
5328 | */ | |
5329 | ||
5330 | static void | |
d4af74d4 | 5331 | c_parser_do_statement (c_parser *parser, bool ivdep) |
27bf414c JM |
5332 | { |
5333 | tree block, cond, body, save_break, save_cont, new_break, new_cont; | |
5334 | location_t loc; | |
5335 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_DO)); | |
5336 | c_parser_consume_token (parser); | |
62e00e94 | 5337 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
3ba09659 AH |
5338 | warning_at (c_parser_peek_token (parser)->location, |
5339 | OPT_Wempty_body, | |
5340 | "suggest braces around empty body in %<do%> statement"); | |
27bf414c JM |
5341 | block = c_begin_compound_stmt (flag_isoc99); |
5342 | loc = c_parser_peek_token (parser)->location; | |
5343 | save_break = c_break_label; | |
5344 | c_break_label = NULL_TREE; | |
5345 | save_cont = c_cont_label; | |
5346 | c_cont_label = NULL_TREE; | |
5347 | body = c_parser_c99_block_statement (parser); | |
5348 | c_parser_require_keyword (parser, RID_WHILE, "expected %<while%>"); | |
5349 | new_break = c_break_label; | |
5350 | c_break_label = save_break; | |
5351 | new_cont = c_cont_label; | |
5352 | c_cont_label = save_cont; | |
5353 | cond = c_parser_paren_condition (parser); | |
e5e44252 AK |
5354 | if (check_no_cilk (cond, |
5355 | "Cilk array notation cannot be used as a condition for a do-while statement", | |
5356 | "%<_Cilk_spawn%> statement cannot be used as a condition for a do-while statement")) | |
5357 | cond = error_mark_node; | |
d4af74d4 TB |
5358 | if (ivdep && cond != error_mark_node) |
5359 | cond = build2 (ANNOTATE_EXPR, TREE_TYPE (cond), cond, | |
5360 | build_int_cst (integer_type_node, | |
5361 | annot_expr_ivdep_kind)); | |
27bf414c JM |
5362 | if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) |
5363 | c_parser_skip_to_end_of_block_or_statement (parser); | |
5364 | c_finish_loop (loc, cond, NULL, body, new_break, new_cont, false); | |
c2255bc4 | 5365 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99)); |
27bf414c JM |
5366 | } |
5367 | ||
5368 | /* Parse a for statement (C90 6.6.5, C99 6.8.5). | |
5369 | ||
5370 | for-statement: | |
5371 | for ( expression[opt] ; expression[opt] ; expression[opt] ) statement | |
5372 | for ( nested-declaration expression[opt] ; expression[opt] ) statement | |
5373 | ||
5374 | The form with a declaration is new in C99. | |
5375 | ||
5376 | ??? In accordance with the old parser, the declaration may be a | |
5377 | nested function, which is then rejected in check_for_loop_decls, | |
5378 | but does it make any sense for this to be included in the grammar? | |
5379 | Note in particular that the nested function does not include a | |
5380 | trailing ';', whereas the "declaration" production includes one. | |
5381 | Also, can we reject bad declarations earlier and cheaper than | |
f05b9d93 NP |
5382 | check_for_loop_decls? |
5383 | ||
5384 | In Objective-C, there are two additional variants: | |
5385 | ||
5386 | foreach-statement: | |
5387 | for ( expression in expresssion ) statement | |
5388 | for ( declaration in expression ) statement | |
5389 | ||
5390 | This is inconsistent with C, because the second variant is allowed | |
5391 | even if c99 is not enabled. | |
5392 | ||
5393 | The rest of the comment documents these Objective-C foreach-statement. | |
5394 | ||
5395 | Here is the canonical example of the first variant: | |
5396 | for (object in array) { do something with object } | |
5397 | we call the first expression ("object") the "object_expression" and | |
5398 | the second expression ("array") the "collection_expression". | |
5399 | object_expression must be an lvalue of type "id" (a generic Objective-C | |
5400 | object) because the loop works by assigning to object_expression the | |
5401 | various objects from the collection_expression. collection_expression | |
5402 | must evaluate to something of type "id" which responds to the method | |
5403 | countByEnumeratingWithState:objects:count:. | |
5404 | ||
5405 | The canonical example of the second variant is: | |
5406 | for (id object in array) { do something with object } | |
5407 | which is completely equivalent to | |
5408 | { | |
5409 | id object; | |
5410 | for (object in array) { do something with object } | |
5411 | } | |
5412 | Note that initizializing 'object' in some way (eg, "for ((object = | |
5413 | xxx) in array) { do something with object }") is possibly | |
5414 | technically valid, but completely pointless as 'object' will be | |
5415 | assigned to something else as soon as the loop starts. We should | |
5416 | most likely reject it (TODO). | |
5417 | ||
5418 | The beginning of the Objective-C foreach-statement looks exactly | |
5419 | like the beginning of the for-statement, and we can tell it is a | |
5420 | foreach-statement only because the initial declaration or | |
5421 | expression is terminated by 'in' instead of ';'. | |
5422 | */ | |
27bf414c JM |
5423 | |
5424 | static void | |
8170608b | 5425 | c_parser_for_statement (c_parser *parser, bool ivdep) |
27bf414c JM |
5426 | { |
5427 | tree block, cond, incr, save_break, save_cont, body; | |
f05b9d93 | 5428 | /* The following are only used when parsing an ObjC foreach statement. */ |
689f2c82 AO |
5429 | tree object_expression; |
5430 | /* Silence the bogus uninitialized warning. */ | |
5431 | tree collection_expression = NULL; | |
c2255bc4 AH |
5432 | location_t loc = c_parser_peek_token (parser)->location; |
5433 | location_t for_loc = c_parser_peek_token (parser)->location; | |
f05b9d93 | 5434 | bool is_foreach_statement = false; |
27bf414c JM |
5435 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_FOR)); |
5436 | c_parser_consume_token (parser); | |
f05b9d93 NP |
5437 | /* Open a compound statement in Objective-C as well, just in case this is |
5438 | as foreach expression. */ | |
5439 | block = c_begin_compound_stmt (flag_isoc99 || c_dialect_objc ()); | |
91b90ead UB |
5440 | cond = error_mark_node; |
5441 | incr = error_mark_node; | |
27bf414c JM |
5442 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
5443 | { | |
5444 | /* Parse the initialization declaration or expression. */ | |
f05b9d93 | 5445 | object_expression = error_mark_node; |
a5812bdc | 5446 | parser->objc_could_be_foreach_context = c_dialect_objc (); |
27bf414c JM |
5447 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
5448 | { | |
a5812bdc | 5449 | parser->objc_could_be_foreach_context = false; |
27bf414c | 5450 | c_parser_consume_token (parser); |
c2255bc4 | 5451 | c_finish_expr_stmt (loc, NULL_TREE); |
27bf414c | 5452 | } |
2f413185 | 5453 | else if (c_parser_next_tokens_start_declaration (parser)) |
27bf414c | 5454 | { |
f05b9d93 | 5455 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, |
acf0174b | 5456 | &object_expression, vNULL); |
f05b9d93 NP |
5457 | parser->objc_could_be_foreach_context = false; |
5458 | ||
5459 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
5460 | { | |
5461 | c_parser_consume_token (parser); | |
5462 | is_foreach_statement = true; | |
5463 | if (check_for_loop_decls (for_loc, true) == NULL_TREE) | |
5464 | c_parser_error (parser, "multiple iterating variables in fast enumeration"); | |
5465 | } | |
5466 | else | |
5467 | check_for_loop_decls (for_loc, flag_isoc99); | |
27bf414c JM |
5468 | } |
5469 | else if (c_parser_next_token_is_keyword (parser, RID_EXTENSION)) | |
5470 | { | |
5471 | /* __extension__ can start a declaration, but is also an | |
5472 | unary operator that can start an expression. Consume all | |
5473 | but the last of a possible series of __extension__ to | |
5474 | determine which. */ | |
5475 | while (c_parser_peek_2nd_token (parser)->type == CPP_KEYWORD | |
5476 | && (c_parser_peek_2nd_token (parser)->keyword | |
5477 | == RID_EXTENSION)) | |
5478 | c_parser_consume_token (parser); | |
32912286 | 5479 | if (c_token_starts_declaration (c_parser_peek_2nd_token (parser))) |
27bf414c JM |
5480 | { |
5481 | int ext; | |
5482 | ext = disable_extension_diagnostics (); | |
5483 | c_parser_consume_token (parser); | |
32912286 | 5484 | c_parser_declaration_or_fndef (parser, true, true, true, true, |
acf0174b | 5485 | true, &object_expression, vNULL); |
f05b9d93 NP |
5486 | parser->objc_could_be_foreach_context = false; |
5487 | ||
27bf414c | 5488 | restore_extension_diagnostics (ext); |
f05b9d93 NP |
5489 | if (c_parser_next_token_is_keyword (parser, RID_IN)) |
5490 | { | |
5491 | c_parser_consume_token (parser); | |
5492 | is_foreach_statement = true; | |
5493 | if (check_for_loop_decls (for_loc, true) == NULL_TREE) | |
5494 | c_parser_error (parser, "multiple iterating variables in fast enumeration"); | |
5495 | } | |
5496 | else | |
5497 | check_for_loop_decls (for_loc, flag_isoc99); | |
27bf414c JM |
5498 | } |
5499 | else | |
5500 | goto init_expr; | |
5501 | } | |
5502 | else | |
5503 | { | |
5504 | init_expr: | |
f05b9d93 | 5505 | { |
267bac10 | 5506 | struct c_expr ce; |
f05b9d93 | 5507 | tree init_expression; |
267bac10 | 5508 | ce = c_parser_expression (parser); |
e5e44252 AK |
5509 | /* In theory we could forbid _Cilk_spawn here, as the spec says "only in top |
5510 | level statement", but it works just fine, so allow it. */ | |
267bac10 | 5511 | init_expression = ce.value; |
f05b9d93 NP |
5512 | parser->objc_could_be_foreach_context = false; |
5513 | if (c_parser_next_token_is_keyword (parser, RID_IN)) | |
5514 | { | |
5515 | c_parser_consume_token (parser); | |
5516 | is_foreach_statement = true; | |
5517 | if (! lvalue_p (init_expression)) | |
5518 | c_parser_error (parser, "invalid iterating variable in fast enumeration"); | |
69a97201 | 5519 | object_expression = c_fully_fold (init_expression, false, NULL); |
f05b9d93 NP |
5520 | } |
5521 | else | |
5522 | { | |
267bac10 JM |
5523 | ce = convert_lvalue_to_rvalue (loc, ce, true, false); |
5524 | init_expression = ce.value; | |
f05b9d93 NP |
5525 | c_finish_expr_stmt (loc, init_expression); |
5526 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
5527 | } | |
5528 | } | |
27bf414c | 5529 | } |
f05b9d93 NP |
5530 | /* Parse the loop condition. In the case of a foreach |
5531 | statement, there is no loop condition. */ | |
a5812bdc | 5532 | gcc_assert (!parser->objc_could_be_foreach_context); |
f05b9d93 | 5533 | if (!is_foreach_statement) |
27bf414c | 5534 | { |
f05b9d93 NP |
5535 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
5536 | { | |
8170608b TB |
5537 | if (ivdep) |
5538 | { | |
5539 | c_parser_error (parser, "missing loop condition in loop with " | |
5540 | "%<GCC ivdep%> pragma"); | |
5541 | cond = error_mark_node; | |
5542 | } | |
5543 | else | |
5544 | { | |
5545 | c_parser_consume_token (parser); | |
5546 | cond = NULL_TREE; | |
5547 | } | |
f05b9d93 NP |
5548 | } |
5549 | else | |
5550 | { | |
5551 | cond = c_parser_condition (parser); | |
e5e44252 AK |
5552 | if (check_no_cilk (cond, |
5553 | "Cilk array notation cannot be used in a condition for a for-loop", | |
5554 | "%<_Cilk_spawn%> statement cannot be used in a condition for a for-loop")) | |
5555 | cond = error_mark_node; | |
36536d79 BI |
5556 | c_parser_skip_until_found (parser, CPP_SEMICOLON, |
5557 | "expected %<;%>"); | |
f05b9d93 | 5558 | } |
8170608b TB |
5559 | if (ivdep && cond != error_mark_node) |
5560 | cond = build2 (ANNOTATE_EXPR, TREE_TYPE (cond), cond, | |
5561 | build_int_cst (integer_type_node, | |
5562 | annot_expr_ivdep_kind)); | |
27bf414c | 5563 | } |
f05b9d93 NP |
5564 | /* Parse the increment expression (the third expression in a |
5565 | for-statement). In the case of a foreach-statement, this is | |
5566 | the expression that follows the 'in'. */ | |
5567 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
27bf414c | 5568 | { |
f05b9d93 NP |
5569 | if (is_foreach_statement) |
5570 | { | |
5571 | c_parser_error (parser, "missing collection in fast enumeration"); | |
5572 | collection_expression = error_mark_node; | |
5573 | } | |
5574 | else | |
5575 | incr = c_process_expr_stmt (loc, NULL_TREE); | |
27bf414c | 5576 | } |
27bf414c | 5577 | else |
f05b9d93 NP |
5578 | { |
5579 | if (is_foreach_statement) | |
69a97201 NP |
5580 | collection_expression = c_fully_fold (c_parser_expression (parser).value, |
5581 | false, NULL); | |
f05b9d93 | 5582 | else |
267bac10 JM |
5583 | { |
5584 | struct c_expr ce = c_parser_expression (parser); | |
5585 | ce = convert_lvalue_to_rvalue (loc, ce, true, false); | |
5586 | incr = c_process_expr_stmt (loc, ce.value); | |
5587 | } | |
f05b9d93 | 5588 | } |
27bf414c JM |
5589 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
5590 | } | |
27bf414c JM |
5591 | save_break = c_break_label; |
5592 | c_break_label = NULL_TREE; | |
5593 | save_cont = c_cont_label; | |
5594 | c_cont_label = NULL_TREE; | |
5595 | body = c_parser_c99_block_statement (parser); | |
f05b9d93 NP |
5596 | if (is_foreach_statement) |
5597 | objc_finish_foreach_loop (loc, object_expression, collection_expression, body, c_break_label, c_cont_label); | |
5598 | else | |
5599 | c_finish_loop (loc, cond, incr, body, c_break_label, c_cont_label, true); | |
5600 | add_stmt (c_end_compound_stmt (loc, block, flag_isoc99 || c_dialect_objc ())); | |
27bf414c JM |
5601 | c_break_label = save_break; |
5602 | c_cont_label = save_cont; | |
5603 | } | |
5604 | ||
5605 | /* Parse an asm statement, a GNU extension. This is a full-blown asm | |
5606 | statement with inputs, outputs, clobbers, and volatile tag | |
5607 | allowed. | |
5608 | ||
5609 | asm-statement: | |
5610 | asm type-qualifier[opt] ( asm-argument ) ; | |
1c384bf1 | 5611 | asm type-qualifier[opt] goto ( asm-goto-argument ) ; |
27bf414c JM |
5612 | |
5613 | asm-argument: | |
5614 | asm-string-literal | |
5615 | asm-string-literal : asm-operands[opt] | |
5616 | asm-string-literal : asm-operands[opt] : asm-operands[opt] | |
1c384bf1 RH |
5617 | asm-string-literal : asm-operands[opt] : asm-operands[opt] : asm-clobbers[opt] |
5618 | ||
5619 | asm-goto-argument: | |
5620 | asm-string-literal : : asm-operands[opt] : asm-clobbers[opt] \ | |
5621 | : asm-goto-operands | |
27bf414c JM |
5622 | |
5623 | Qualifiers other than volatile are accepted in the syntax but | |
5624 | warned for. */ | |
5625 | ||
5626 | static tree | |
5627 | c_parser_asm_statement (c_parser *parser) | |
5628 | { | |
1c384bf1 RH |
5629 | tree quals, str, outputs, inputs, clobbers, labels, ret; |
5630 | bool simple, is_goto; | |
c2255bc4 | 5631 | location_t asm_loc = c_parser_peek_token (parser)->location; |
1c384bf1 RH |
5632 | int section, nsections; |
5633 | ||
27bf414c JM |
5634 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ASM)); |
5635 | c_parser_consume_token (parser); | |
5636 | if (c_parser_next_token_is_keyword (parser, RID_VOLATILE)) | |
5637 | { | |
5638 | quals = c_parser_peek_token (parser)->value; | |
5639 | c_parser_consume_token (parser); | |
5640 | } | |
5641 | else if (c_parser_next_token_is_keyword (parser, RID_CONST) | |
5642 | || c_parser_next_token_is_keyword (parser, RID_RESTRICT)) | |
5643 | { | |
3ba09659 AH |
5644 | warning_at (c_parser_peek_token (parser)->location, |
5645 | 0, | |
5646 | "%E qualifier ignored on asm", | |
5647 | c_parser_peek_token (parser)->value); | |
27bf414c JM |
5648 | quals = NULL_TREE; |
5649 | c_parser_consume_token (parser); | |
5650 | } | |
5651 | else | |
5652 | quals = NULL_TREE; | |
1c384bf1 RH |
5653 | |
5654 | is_goto = false; | |
5655 | if (c_parser_next_token_is_keyword (parser, RID_GOTO)) | |
5656 | { | |
5657 | c_parser_consume_token (parser); | |
5658 | is_goto = true; | |
5659 | } | |
5660 | ||
27bf414c | 5661 | /* ??? Follow the C++ parser rather than using the |
46c2514e TT |
5662 | lex_untranslated_string kludge. */ |
5663 | parser->lex_untranslated_string = true; | |
1c384bf1 RH |
5664 | ret = NULL; |
5665 | ||
27bf414c | 5666 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
1c384bf1 RH |
5667 | goto error; |
5668 | ||
27bf414c | 5669 | str = c_parser_asm_string_literal (parser); |
b85eb797 | 5670 | if (str == NULL_TREE) |
1c384bf1 RH |
5671 | goto error_close_paren; |
5672 | ||
5673 | simple = true; | |
5674 | outputs = NULL_TREE; | |
5675 | inputs = NULL_TREE; | |
5676 | clobbers = NULL_TREE; | |
5677 | labels = NULL_TREE; | |
5678 | ||
5679 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN) && !is_goto) | |
5680 | goto done_asm; | |
5681 | ||
5682 | /* Parse each colon-delimited section of operands. */ | |
5683 | nsections = 3 + is_goto; | |
5684 | for (section = 0; section < nsections; ++section) | |
b85eb797 | 5685 | { |
1c384bf1 RH |
5686 | if (!c_parser_require (parser, CPP_COLON, |
5687 | is_goto | |
5688 | ? "expected %<:%>" | |
5689 | : "expected %<:%> or %<)%>")) | |
5690 | goto error_close_paren; | |
5691 | ||
5692 | /* Once past any colon, we're no longer a simple asm. */ | |
5693 | simple = false; | |
5694 | ||
5695 | if ((!c_parser_next_token_is (parser, CPP_COLON) | |
5696 | && !c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
5697 | || section == 3) | |
5698 | switch (section) | |
5699 | { | |
5700 | case 0: | |
5701 | /* For asm goto, we don't allow output operands, but reserve | |
5702 | the slot for a future extension that does allow them. */ | |
5703 | if (!is_goto) | |
eadd3d0d | 5704 | outputs = c_parser_asm_operands (parser); |
1c384bf1 RH |
5705 | break; |
5706 | case 1: | |
eadd3d0d | 5707 | inputs = c_parser_asm_operands (parser); |
1c384bf1 RH |
5708 | break; |
5709 | case 2: | |
5710 | clobbers = c_parser_asm_clobbers (parser); | |
5711 | break; | |
5712 | case 3: | |
5713 | labels = c_parser_asm_goto_operands (parser); | |
5714 | break; | |
5715 | default: | |
5716 | gcc_unreachable (); | |
5717 | } | |
5718 | ||
5719 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN) && !is_goto) | |
5720 | goto done_asm; | |
27bf414c | 5721 | } |
1c384bf1 | 5722 | |
27bf414c | 5723 | done_asm: |
27bf414c JM |
5724 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
5725 | { | |
5726 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
1c384bf1 | 5727 | goto error; |
27bf414c | 5728 | } |
1c384bf1 | 5729 | |
27bf414c JM |
5730 | if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) |
5731 | c_parser_skip_to_end_of_block_or_statement (parser); | |
1c384bf1 | 5732 | |
c2255bc4 | 5733 | ret = build_asm_stmt (quals, build_asm_expr (asm_loc, str, outputs, inputs, |
1c384bf1 RH |
5734 | clobbers, labels, simple)); |
5735 | ||
5736 | error: | |
5737 | parser->lex_untranslated_string = false; | |
27bf414c | 5738 | return ret; |
1c384bf1 RH |
5739 | |
5740 | error_close_paren: | |
5741 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
5742 | goto error; | |
27bf414c JM |
5743 | } |
5744 | ||
eadd3d0d | 5745 | /* Parse asm operands, a GNU extension. |
27bf414c JM |
5746 | |
5747 | asm-operands: | |
5748 | asm-operand | |
5749 | asm-operands , asm-operand | |
5750 | ||
5751 | asm-operand: | |
5752 | asm-string-literal ( expression ) | |
5753 | [ identifier ] asm-string-literal ( expression ) | |
5754 | */ | |
5755 | ||
5756 | static tree | |
eadd3d0d | 5757 | c_parser_asm_operands (c_parser *parser) |
27bf414c JM |
5758 | { |
5759 | tree list = NULL_TREE; | |
5760 | while (true) | |
5761 | { | |
f2a71bbc JM |
5762 | tree name, str; |
5763 | struct c_expr expr; | |
27bf414c JM |
5764 | if (c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) |
5765 | { | |
5766 | c_parser_consume_token (parser); | |
5767 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
5768 | { | |
5769 | tree id = c_parser_peek_token (parser)->value; | |
5770 | c_parser_consume_token (parser); | |
5771 | name = build_string (IDENTIFIER_LENGTH (id), | |
5772 | IDENTIFIER_POINTER (id)); | |
5773 | } | |
5774 | else | |
5775 | { | |
5776 | c_parser_error (parser, "expected identifier"); | |
5777 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
5778 | return NULL_TREE; | |
5779 | } | |
5780 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
5781 | "expected %<]%>"); | |
5782 | } | |
5783 | else | |
5784 | name = NULL_TREE; | |
5785 | str = c_parser_asm_string_literal (parser); | |
5786 | if (str == NULL_TREE) | |
5787 | return NULL_TREE; | |
46c2514e | 5788 | parser->lex_untranslated_string = false; |
27bf414c JM |
5789 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
5790 | { | |
46c2514e | 5791 | parser->lex_untranslated_string = true; |
27bf414c JM |
5792 | return NULL_TREE; |
5793 | } | |
f2a71bbc | 5794 | expr = c_parser_expression (parser); |
ebfbbdc5 | 5795 | mark_exp_read (expr.value); |
46c2514e | 5796 | parser->lex_untranslated_string = true; |
27bf414c JM |
5797 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
5798 | { | |
5799 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
5800 | return NULL_TREE; | |
5801 | } | |
5802 | list = chainon (list, build_tree_list (build_tree_list (name, str), | |
f2a71bbc | 5803 | expr.value)); |
27bf414c JM |
5804 | if (c_parser_next_token_is (parser, CPP_COMMA)) |
5805 | c_parser_consume_token (parser); | |
5806 | else | |
5807 | break; | |
5808 | } | |
5809 | return list; | |
5810 | } | |
5811 | ||
5812 | /* Parse asm clobbers, a GNU extension. | |
5813 | ||
5814 | asm-clobbers: | |
5815 | asm-string-literal | |
5816 | asm-clobbers , asm-string-literal | |
5817 | */ | |
5818 | ||
5819 | static tree | |
5820 | c_parser_asm_clobbers (c_parser *parser) | |
5821 | { | |
5822 | tree list = NULL_TREE; | |
5823 | while (true) | |
5824 | { | |
5825 | tree str = c_parser_asm_string_literal (parser); | |
5826 | if (str) | |
5827 | list = tree_cons (NULL_TREE, str, list); | |
5828 | else | |
5829 | return NULL_TREE; | |
5830 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
5831 | c_parser_consume_token (parser); | |
5832 | else | |
5833 | break; | |
5834 | } | |
5835 | return list; | |
5836 | } | |
5837 | ||
1c384bf1 | 5838 | /* Parse asm goto labels, a GNU extension. |
b8698a0f | 5839 | |
1c384bf1 RH |
5840 | asm-goto-operands: |
5841 | identifier | |
5842 | asm-goto-operands , identifier | |
5843 | */ | |
5844 | ||
5845 | static tree | |
5846 | c_parser_asm_goto_operands (c_parser *parser) | |
5847 | { | |
5848 | tree list = NULL_TREE; | |
5849 | while (true) | |
5850 | { | |
5851 | tree name, label; | |
5852 | ||
5853 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
5854 | { | |
5855 | c_token *tok = c_parser_peek_token (parser); | |
5856 | name = tok->value; | |
5857 | label = lookup_label_for_goto (tok->location, name); | |
5858 | c_parser_consume_token (parser); | |
5859 | TREE_USED (label) = 1; | |
5860 | } | |
5861 | else | |
5862 | { | |
5863 | c_parser_error (parser, "expected identifier"); | |
5864 | return NULL_TREE; | |
5865 | } | |
5866 | ||
5867 | name = build_string (IDENTIFIER_LENGTH (name), | |
5868 | IDENTIFIER_POINTER (name)); | |
5869 | list = tree_cons (name, label, list); | |
5870 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
5871 | c_parser_consume_token (parser); | |
5872 | else | |
5873 | return nreverse (list); | |
5874 | } | |
5875 | } | |
5876 | ||
27bf414c JM |
5877 | /* Parse an expression other than a compound expression; that is, an |
5878 | assignment expression (C90 6.3.16, C99 6.5.16). If AFTER is not | |
5879 | NULL then it is an Objective-C message expression which is the | |
5880 | primary-expression starting the expression as an initializer. | |
5881 | ||
5882 | assignment-expression: | |
5883 | conditional-expression | |
5884 | unary-expression assignment-operator assignment-expression | |
5885 | ||
5886 | assignment-operator: one of | |
5887 | = *= /= %= += -= <<= >>= &= ^= |= | |
5888 | ||
5889 | In GNU C we accept any conditional expression on the LHS and | |
5890 | diagnose the invalid lvalue rather than producing a syntax | |
5891 | error. */ | |
5892 | ||
5893 | static struct c_expr | |
acf0174b JJ |
5894 | c_parser_expr_no_commas (c_parser *parser, struct c_expr *after, |
5895 | tree omp_atomic_lhs) | |
27bf414c JM |
5896 | { |
5897 | struct c_expr lhs, rhs, ret; | |
5898 | enum tree_code code; | |
c2255bc4 | 5899 | location_t op_location, exp_location; |
27bf414c | 5900 | gcc_assert (!after || c_dialect_objc ()); |
acf0174b | 5901 | lhs = c_parser_conditional_expression (parser, after, omp_atomic_lhs); |
c9f9eb5d | 5902 | op_location = c_parser_peek_token (parser)->location; |
27bf414c JM |
5903 | switch (c_parser_peek_token (parser)->type) |
5904 | { | |
5905 | case CPP_EQ: | |
5906 | code = NOP_EXPR; | |
5907 | break; | |
5908 | case CPP_MULT_EQ: | |
5909 | code = MULT_EXPR; | |
5910 | break; | |
5911 | case CPP_DIV_EQ: | |
5912 | code = TRUNC_DIV_EXPR; | |
5913 | break; | |
5914 | case CPP_MOD_EQ: | |
5915 | code = TRUNC_MOD_EXPR; | |
5916 | break; | |
5917 | case CPP_PLUS_EQ: | |
5918 | code = PLUS_EXPR; | |
5919 | break; | |
5920 | case CPP_MINUS_EQ: | |
5921 | code = MINUS_EXPR; | |
5922 | break; | |
5923 | case CPP_LSHIFT_EQ: | |
5924 | code = LSHIFT_EXPR; | |
5925 | break; | |
5926 | case CPP_RSHIFT_EQ: | |
5927 | code = RSHIFT_EXPR; | |
5928 | break; | |
5929 | case CPP_AND_EQ: | |
5930 | code = BIT_AND_EXPR; | |
5931 | break; | |
5932 | case CPP_XOR_EQ: | |
5933 | code = BIT_XOR_EXPR; | |
5934 | break; | |
5935 | case CPP_OR_EQ: | |
5936 | code = BIT_IOR_EXPR; | |
5937 | break; | |
5938 | default: | |
5939 | return lhs; | |
5940 | } | |
5941 | c_parser_consume_token (parser); | |
c2255bc4 | 5942 | exp_location = c_parser_peek_token (parser)->location; |
27bf414c | 5943 | rhs = c_parser_expr_no_commas (parser, NULL); |
267bac10 | 5944 | rhs = convert_lvalue_to_rvalue (exp_location, rhs, true, true); |
36536d79 | 5945 | |
25c22937 BI |
5946 | ret.value = build_modify_expr (op_location, lhs.value, lhs.original_type, |
5947 | code, exp_location, rhs.value, | |
5948 | rhs.original_type); | |
27bf414c JM |
5949 | if (code == NOP_EXPR) |
5950 | ret.original_code = MODIFY_EXPR; | |
5951 | else | |
5952 | { | |
5953 | TREE_NO_WARNING (ret.value) = 1; | |
5954 | ret.original_code = ERROR_MARK; | |
5955 | } | |
6866c6e8 | 5956 | ret.original_type = NULL; |
27bf414c JM |
5957 | return ret; |
5958 | } | |
5959 | ||
5960 | /* Parse a conditional expression (C90 6.3.15, C99 6.5.15). If AFTER | |
5961 | is not NULL then it is an Objective-C message expression which is | |
5962 | the primary-expression starting the expression as an initializer. | |
5963 | ||
5964 | conditional-expression: | |
5965 | logical-OR-expression | |
5966 | logical-OR-expression ? expression : conditional-expression | |
5967 | ||
5968 | GNU extensions: | |
5969 | ||
5970 | conditional-expression: | |
5971 | logical-OR-expression ? : conditional-expression | |
5972 | */ | |
5973 | ||
5974 | static struct c_expr | |
acf0174b JJ |
5975 | c_parser_conditional_expression (c_parser *parser, struct c_expr *after, |
5976 | tree omp_atomic_lhs) | |
27bf414c JM |
5977 | { |
5978 | struct c_expr cond, exp1, exp2, ret; | |
d166d4c3 | 5979 | location_t cond_loc, colon_loc, middle_loc; |
ba47d38d | 5980 | |
27bf414c | 5981 | gcc_assert (!after || c_dialect_objc ()); |
ba47d38d | 5982 | |
acf0174b | 5983 | cond = c_parser_binary_expression (parser, after, omp_atomic_lhs); |
ba47d38d | 5984 | |
27bf414c JM |
5985 | if (c_parser_next_token_is_not (parser, CPP_QUERY)) |
5986 | return cond; | |
c2255bc4 | 5987 | cond_loc = c_parser_peek_token (parser)->location; |
267bac10 | 5988 | cond = convert_lvalue_to_rvalue (cond_loc, cond, true, true); |
27bf414c JM |
5989 | c_parser_consume_token (parser); |
5990 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
5991 | { | |
8ce94e44 | 5992 | tree eptype = NULL_TREE; |
d166d4c3 AK |
5993 | |
5994 | middle_loc = c_parser_peek_token (parser)->location; | |
c1771a20 | 5995 | pedwarn (middle_loc, OPT_Wpedantic, |
509c9d60 | 5996 | "ISO C forbids omitting the middle term of a ?: expression"); |
d166d4c3 | 5997 | warn_for_omitted_condop (middle_loc, cond.value); |
8ce94e44 JM |
5998 | if (TREE_CODE (cond.value) == EXCESS_PRECISION_EXPR) |
5999 | { | |
6000 | eptype = TREE_TYPE (cond.value); | |
6001 | cond.value = TREE_OPERAND (cond.value, 0); | |
6002 | } | |
27bf414c | 6003 | /* Make sure first operand is calculated only once. */ |
928c19bb | 6004 | exp1.value = c_save_expr (default_conversion (cond.value)); |
8ce94e44 JM |
6005 | if (eptype) |
6006 | exp1.value = build1 (EXCESS_PRECISION_EXPR, eptype, exp1.value); | |
6866c6e8 | 6007 | exp1.original_type = NULL; |
ba47d38d | 6008 | cond.value = c_objc_common_truthvalue_conversion (cond_loc, exp1.value); |
7d882b83 | 6009 | c_inhibit_evaluation_warnings += cond.value == truthvalue_true_node; |
27bf414c JM |
6010 | } |
6011 | else | |
6012 | { | |
6013 | cond.value | |
85498824 | 6014 | = c_objc_common_truthvalue_conversion |
ba47d38d | 6015 | (cond_loc, default_conversion (cond.value)); |
7d882b83 | 6016 | c_inhibit_evaluation_warnings += cond.value == truthvalue_false_node; |
46bdb9cf | 6017 | exp1 = c_parser_expression_conv (parser); |
ebfbbdc5 | 6018 | mark_exp_read (exp1.value); |
7d882b83 ILT |
6019 | c_inhibit_evaluation_warnings += |
6020 | ((cond.value == truthvalue_true_node) | |
6021 | - (cond.value == truthvalue_false_node)); | |
27bf414c | 6022 | } |
744aa42f ILT |
6023 | |
6024 | colon_loc = c_parser_peek_token (parser)->location; | |
27bf414c JM |
6025 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) |
6026 | { | |
7d882b83 | 6027 | c_inhibit_evaluation_warnings -= cond.value == truthvalue_true_node; |
27bf414c JM |
6028 | ret.value = error_mark_node; |
6029 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 6030 | ret.original_type = NULL; |
27bf414c JM |
6031 | return ret; |
6032 | } | |
c2255bc4 AH |
6033 | { |
6034 | location_t exp2_loc = c_parser_peek_token (parser)->location; | |
acf0174b | 6035 | exp2 = c_parser_conditional_expression (parser, NULL, NULL_TREE); |
267bac10 | 6036 | exp2 = convert_lvalue_to_rvalue (exp2_loc, exp2, true, true); |
c2255bc4 | 6037 | } |
7d882b83 | 6038 | c_inhibit_evaluation_warnings -= cond.value == truthvalue_true_node; |
744aa42f | 6039 | ret.value = build_conditional_expr (colon_loc, cond.value, |
928c19bb | 6040 | cond.original_code == C_MAYBE_CONST_EXPR, |
d130ae11 ILT |
6041 | exp1.value, exp1.original_type, |
6042 | exp2.value, exp2.original_type); | |
27bf414c | 6043 | ret.original_code = ERROR_MARK; |
6866c6e8 ILT |
6044 | if (exp1.value == error_mark_node || exp2.value == error_mark_node) |
6045 | ret.original_type = NULL; | |
6046 | else | |
6047 | { | |
6048 | tree t1, t2; | |
6049 | ||
6050 | /* If both sides are enum type, the default conversion will have | |
6051 | made the type of the result be an integer type. We want to | |
6052 | remember the enum types we started with. */ | |
6053 | t1 = exp1.original_type ? exp1.original_type : TREE_TYPE (exp1.value); | |
6054 | t2 = exp2.original_type ? exp2.original_type : TREE_TYPE (exp2.value); | |
6055 | ret.original_type = ((t1 != error_mark_node | |
6056 | && t2 != error_mark_node | |
6057 | && (TYPE_MAIN_VARIANT (t1) | |
6058 | == TYPE_MAIN_VARIANT (t2))) | |
6059 | ? t1 | |
6060 | : NULL); | |
6061 | } | |
27bf414c JM |
6062 | return ret; |
6063 | } | |
6064 | ||
6065 | /* Parse a binary expression; that is, a logical-OR-expression (C90 | |
6066 | 6.3.5-6.3.14, C99 6.5.5-6.5.14). If AFTER is not NULL then it is | |
6067 | an Objective-C message expression which is the primary-expression | |
acf0174b JJ |
6068 | starting the expression as an initializer. |
6069 | ||
6070 | OMP_ATOMIC_LHS is NULL, unless parsing OpenMP #pragma omp atomic, | |
6071 | when it should be the unfolded lhs. In a valid OpenMP source, | |
6072 | one of the operands of the toplevel binary expression must be equal | |
6073 | to it. In that case, just return a build2 created binary operation | |
6074 | rather than result of parser_build_binary_op. | |
27bf414c JM |
6075 | |
6076 | multiplicative-expression: | |
6077 | cast-expression | |
6078 | multiplicative-expression * cast-expression | |
6079 | multiplicative-expression / cast-expression | |
6080 | multiplicative-expression % cast-expression | |
6081 | ||
6082 | additive-expression: | |
6083 | multiplicative-expression | |
6084 | additive-expression + multiplicative-expression | |
6085 | additive-expression - multiplicative-expression | |
6086 | ||
6087 | shift-expression: | |
6088 | additive-expression | |
6089 | shift-expression << additive-expression | |
6090 | shift-expression >> additive-expression | |
6091 | ||
6092 | relational-expression: | |
6093 | shift-expression | |
6094 | relational-expression < shift-expression | |
6095 | relational-expression > shift-expression | |
6096 | relational-expression <= shift-expression | |
6097 | relational-expression >= shift-expression | |
6098 | ||
6099 | equality-expression: | |
6100 | relational-expression | |
6101 | equality-expression == relational-expression | |
6102 | equality-expression != relational-expression | |
6103 | ||
6104 | AND-expression: | |
6105 | equality-expression | |
6106 | AND-expression & equality-expression | |
6107 | ||
6108 | exclusive-OR-expression: | |
6109 | AND-expression | |
6110 | exclusive-OR-expression ^ AND-expression | |
6111 | ||
6112 | inclusive-OR-expression: | |
6113 | exclusive-OR-expression | |
6114 | inclusive-OR-expression | exclusive-OR-expression | |
6115 | ||
6116 | logical-AND-expression: | |
6117 | inclusive-OR-expression | |
6118 | logical-AND-expression && inclusive-OR-expression | |
6119 | ||
6120 | logical-OR-expression: | |
6121 | logical-AND-expression | |
6122 | logical-OR-expression || logical-AND-expression | |
6123 | */ | |
6124 | ||
6125 | static struct c_expr | |
20906c66 | 6126 | c_parser_binary_expression (c_parser *parser, struct c_expr *after, |
acf0174b | 6127 | tree omp_atomic_lhs) |
27bf414c JM |
6128 | { |
6129 | /* A binary expression is parsed using operator-precedence parsing, | |
6130 | with the operands being cast expressions. All the binary | |
6131 | operators are left-associative. Thus a binary expression is of | |
6132 | form: | |
6133 | ||
6134 | E0 op1 E1 op2 E2 ... | |
6135 | ||
6136 | which we represent on a stack. On the stack, the precedence | |
6137 | levels are strictly increasing. When a new operator is | |
6138 | encountered of higher precedence than that at the top of the | |
6139 | stack, it is pushed; its LHS is the top expression, and its RHS | |
6140 | is everything parsed until it is popped. When a new operator is | |
6141 | encountered with precedence less than or equal to that at the top | |
6142 | of the stack, triples E[i-1] op[i] E[i] are popped and replaced | |
6143 | by the result of the operation until the operator at the top of | |
6144 | the stack has lower precedence than the new operator or there is | |
6145 | only one element on the stack; then the top expression is the LHS | |
6146 | of the new operator. In the case of logical AND and OR | |
7d882b83 ILT |
6147 | expressions, we also need to adjust c_inhibit_evaluation_warnings |
6148 | as appropriate when the operators are pushed and popped. */ | |
27bf414c | 6149 | |
27bf414c JM |
6150 | struct { |
6151 | /* The expression at this stack level. */ | |
6152 | struct c_expr expr; | |
6153 | /* The precedence of the operator on its left, PREC_NONE at the | |
6154 | bottom of the stack. */ | |
20906c66 | 6155 | enum c_parser_prec prec; |
27bf414c JM |
6156 | /* The operation on its left. */ |
6157 | enum tree_code op; | |
ca80e52b EB |
6158 | /* The source location of this operation. */ |
6159 | location_t loc; | |
27bf414c JM |
6160 | } stack[NUM_PRECS]; |
6161 | int sp; | |
ba47d38d | 6162 | /* Location of the binary operator. */ |
1f6d0c60 | 6163 | location_t binary_loc = UNKNOWN_LOCATION; /* Quiet warning. */ |
27bf414c JM |
6164 | #define POP \ |
6165 | do { \ | |
6166 | switch (stack[sp].op) \ | |
6167 | { \ | |
6168 | case TRUTH_ANDIF_EXPR: \ | |
7d882b83 ILT |
6169 | c_inhibit_evaluation_warnings -= (stack[sp - 1].expr.value \ |
6170 | == truthvalue_false_node); \ | |
27bf414c JM |
6171 | break; \ |
6172 | case TRUTH_ORIF_EXPR: \ | |
7d882b83 ILT |
6173 | c_inhibit_evaluation_warnings -= (stack[sp - 1].expr.value \ |
6174 | == truthvalue_true_node); \ | |
27bf414c JM |
6175 | break; \ |
6176 | default: \ | |
6177 | break; \ | |
6178 | } \ | |
f2a71bbc | 6179 | stack[sp - 1].expr \ |
267bac10 JM |
6180 | = convert_lvalue_to_rvalue (stack[sp - 1].loc, \ |
6181 | stack[sp - 1].expr, true, true); \ | |
f2a71bbc | 6182 | stack[sp].expr \ |
267bac10 JM |
6183 | = convert_lvalue_to_rvalue (stack[sp].loc, \ |
6184 | stack[sp].expr, true, true); \ | |
acf0174b JJ |
6185 | if (__builtin_expect (omp_atomic_lhs != NULL_TREE, 0) && sp == 1 \ |
6186 | && c_parser_peek_token (parser)->type == CPP_SEMICOLON \ | |
6187 | && ((1 << stack[sp].prec) \ | |
6188 | & (1 << (PREC_BITOR | PREC_BITXOR | PREC_BITAND | PREC_SHIFT \ | |
6189 | | PREC_ADD | PREC_MULT))) \ | |
6190 | && stack[sp].op != TRUNC_MOD_EXPR \ | |
6191 | && stack[0].expr.value != error_mark_node \ | |
6192 | && stack[1].expr.value != error_mark_node \ | |
6193 | && (c_tree_equal (stack[0].expr.value, omp_atomic_lhs) \ | |
6194 | || c_tree_equal (stack[1].expr.value, omp_atomic_lhs))) \ | |
6195 | stack[0].expr.value \ | |
6196 | = build2 (stack[1].op, TREE_TYPE (stack[0].expr.value), \ | |
6197 | stack[0].expr.value, stack[1].expr.value); \ | |
6198 | else \ | |
6199 | stack[sp - 1].expr = parser_build_binary_op (stack[sp].loc, \ | |
6200 | stack[sp].op, \ | |
6201 | stack[sp - 1].expr, \ | |
6202 | stack[sp].expr); \ | |
27bf414c JM |
6203 | sp--; \ |
6204 | } while (0) | |
6205 | gcc_assert (!after || c_dialect_objc ()); | |
ca80e52b | 6206 | stack[0].loc = c_parser_peek_token (parser)->location; |
27bf414c | 6207 | stack[0].expr = c_parser_cast_expression (parser, after); |
acf0174b | 6208 | stack[0].prec = PREC_NONE; |
27bf414c JM |
6209 | sp = 0; |
6210 | while (true) | |
6211 | { | |
20906c66 | 6212 | enum c_parser_prec oprec; |
27bf414c JM |
6213 | enum tree_code ocode; |
6214 | if (parser->error) | |
6215 | goto out; | |
6216 | switch (c_parser_peek_token (parser)->type) | |
6217 | { | |
6218 | case CPP_MULT: | |
6219 | oprec = PREC_MULT; | |
6220 | ocode = MULT_EXPR; | |
6221 | break; | |
6222 | case CPP_DIV: | |
6223 | oprec = PREC_MULT; | |
6224 | ocode = TRUNC_DIV_EXPR; | |
6225 | break; | |
6226 | case CPP_MOD: | |
6227 | oprec = PREC_MULT; | |
6228 | ocode = TRUNC_MOD_EXPR; | |
6229 | break; | |
6230 | case CPP_PLUS: | |
6231 | oprec = PREC_ADD; | |
6232 | ocode = PLUS_EXPR; | |
6233 | break; | |
6234 | case CPP_MINUS: | |
6235 | oprec = PREC_ADD; | |
6236 | ocode = MINUS_EXPR; | |
6237 | break; | |
6238 | case CPP_LSHIFT: | |
6239 | oprec = PREC_SHIFT; | |
6240 | ocode = LSHIFT_EXPR; | |
6241 | break; | |
6242 | case CPP_RSHIFT: | |
6243 | oprec = PREC_SHIFT; | |
6244 | ocode = RSHIFT_EXPR; | |
6245 | break; | |
6246 | case CPP_LESS: | |
6247 | oprec = PREC_REL; | |
6248 | ocode = LT_EXPR; | |
6249 | break; | |
6250 | case CPP_GREATER: | |
6251 | oprec = PREC_REL; | |
6252 | ocode = GT_EXPR; | |
6253 | break; | |
6254 | case CPP_LESS_EQ: | |
6255 | oprec = PREC_REL; | |
6256 | ocode = LE_EXPR; | |
6257 | break; | |
6258 | case CPP_GREATER_EQ: | |
6259 | oprec = PREC_REL; | |
6260 | ocode = GE_EXPR; | |
6261 | break; | |
6262 | case CPP_EQ_EQ: | |
6263 | oprec = PREC_EQ; | |
6264 | ocode = EQ_EXPR; | |
6265 | break; | |
6266 | case CPP_NOT_EQ: | |
6267 | oprec = PREC_EQ; | |
6268 | ocode = NE_EXPR; | |
6269 | break; | |
6270 | case CPP_AND: | |
6271 | oprec = PREC_BITAND; | |
6272 | ocode = BIT_AND_EXPR; | |
6273 | break; | |
6274 | case CPP_XOR: | |
6275 | oprec = PREC_BITXOR; | |
6276 | ocode = BIT_XOR_EXPR; | |
6277 | break; | |
6278 | case CPP_OR: | |
6279 | oprec = PREC_BITOR; | |
6280 | ocode = BIT_IOR_EXPR; | |
6281 | break; | |
6282 | case CPP_AND_AND: | |
6283 | oprec = PREC_LOGAND; | |
6284 | ocode = TRUTH_ANDIF_EXPR; | |
6285 | break; | |
6286 | case CPP_OR_OR: | |
6287 | oprec = PREC_LOGOR; | |
6288 | ocode = TRUTH_ORIF_EXPR; | |
6289 | break; | |
6290 | default: | |
6291 | /* Not a binary operator, so end of the binary | |
6292 | expression. */ | |
6293 | goto out; | |
6294 | } | |
ba47d38d | 6295 | binary_loc = c_parser_peek_token (parser)->location; |
27bf414c | 6296 | while (oprec <= stack[sp].prec) |
acf0174b | 6297 | POP; |
20906c66 | 6298 | c_parser_consume_token (parser); |
27bf414c JM |
6299 | switch (ocode) |
6300 | { | |
6301 | case TRUTH_ANDIF_EXPR: | |
f2a71bbc | 6302 | stack[sp].expr |
267bac10 JM |
6303 | = convert_lvalue_to_rvalue (stack[sp].loc, |
6304 | stack[sp].expr, true, true); | |
85498824 | 6305 | stack[sp].expr.value = c_objc_common_truthvalue_conversion |
ca80e52b | 6306 | (stack[sp].loc, default_conversion (stack[sp].expr.value)); |
7d882b83 ILT |
6307 | c_inhibit_evaluation_warnings += (stack[sp].expr.value |
6308 | == truthvalue_false_node); | |
27bf414c JM |
6309 | break; |
6310 | case TRUTH_ORIF_EXPR: | |
f2a71bbc | 6311 | stack[sp].expr |
267bac10 JM |
6312 | = convert_lvalue_to_rvalue (stack[sp].loc, |
6313 | stack[sp].expr, true, true); | |
85498824 | 6314 | stack[sp].expr.value = c_objc_common_truthvalue_conversion |
ca80e52b | 6315 | (stack[sp].loc, default_conversion (stack[sp].expr.value)); |
7d882b83 ILT |
6316 | c_inhibit_evaluation_warnings += (stack[sp].expr.value |
6317 | == truthvalue_true_node); | |
27bf414c JM |
6318 | break; |
6319 | default: | |
6320 | break; | |
6321 | } | |
6322 | sp++; | |
ca80e52b | 6323 | stack[sp].loc = binary_loc; |
27bf414c JM |
6324 | stack[sp].expr = c_parser_cast_expression (parser, NULL); |
6325 | stack[sp].prec = oprec; | |
6326 | stack[sp].op = ocode; | |
c2255bc4 | 6327 | stack[sp].loc = binary_loc; |
27bf414c JM |
6328 | } |
6329 | out: | |
6330 | while (sp > 0) | |
6331 | POP; | |
6332 | return stack[0].expr; | |
6333 | #undef POP | |
6334 | } | |
6335 | ||
6336 | /* Parse a cast expression (C90 6.3.4, C99 6.5.4). If AFTER is not | |
6337 | NULL then it is an Objective-C message expression which is the | |
6338 | primary-expression starting the expression as an initializer. | |
6339 | ||
6340 | cast-expression: | |
6341 | unary-expression | |
6342 | ( type-name ) unary-expression | |
6343 | */ | |
6344 | ||
6345 | static struct c_expr | |
6346 | c_parser_cast_expression (c_parser *parser, struct c_expr *after) | |
6347 | { | |
c2255bc4 | 6348 | location_t cast_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6349 | gcc_assert (!after || c_dialect_objc ()); |
6350 | if (after) | |
c2255bc4 AH |
6351 | return c_parser_postfix_expression_after_primary (parser, |
6352 | cast_loc, *after); | |
27bf414c JM |
6353 | /* If the expression begins with a parenthesized type name, it may |
6354 | be either a cast or a compound literal; we need to see whether | |
6355 | the next character is '{' to tell the difference. If not, it is | |
29ce73cb PB |
6356 | an unary expression. Full detection of unknown typenames here |
6357 | would require a 3-token lookahead. */ | |
27bf414c JM |
6358 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) |
6359 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
6360 | { | |
6361 | struct c_type_name *type_name; | |
6362 | struct c_expr ret; | |
f2a71bbc | 6363 | struct c_expr expr; |
27bf414c JM |
6364 | c_parser_consume_token (parser); |
6365 | type_name = c_parser_type_name (parser); | |
6366 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
6367 | if (type_name == NULL) | |
6368 | { | |
6369 | ret.value = error_mark_node; | |
6370 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 6371 | ret.original_type = NULL; |
27bf414c JM |
6372 | return ret; |
6373 | } | |
33c9159e AH |
6374 | |
6375 | /* Save casted types in the function's used types hash table. */ | |
8d8d1a28 | 6376 | used_types_insert (type_name->specs->type); |
33c9159e | 6377 | |
27bf414c | 6378 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) |
24b97832 | 6379 | return c_parser_postfix_expression_after_paren_type (parser, type_name, |
c2255bc4 AH |
6380 | cast_loc); |
6381 | { | |
6382 | location_t expr_loc = c_parser_peek_token (parser)->location; | |
6383 | expr = c_parser_cast_expression (parser, NULL); | |
267bac10 | 6384 | expr = convert_lvalue_to_rvalue (expr_loc, expr, true, true); |
c2255bc4 AH |
6385 | } |
6386 | ret.value = c_cast_expr (cast_loc, type_name, expr.value); | |
27bf414c | 6387 | ret.original_code = ERROR_MARK; |
6866c6e8 | 6388 | ret.original_type = NULL; |
27bf414c JM |
6389 | return ret; |
6390 | } | |
6391 | else | |
6392 | return c_parser_unary_expression (parser); | |
6393 | } | |
6394 | ||
6395 | /* Parse an unary expression (C90 6.3.3, C99 6.5.3). | |
6396 | ||
6397 | unary-expression: | |
6398 | postfix-expression | |
6399 | ++ unary-expression | |
6400 | -- unary-expression | |
6401 | unary-operator cast-expression | |
6402 | sizeof unary-expression | |
6403 | sizeof ( type-name ) | |
6404 | ||
6405 | unary-operator: one of | |
6406 | & * + - ~ ! | |
6407 | ||
6408 | GNU extensions: | |
6409 | ||
6410 | unary-expression: | |
6411 | __alignof__ unary-expression | |
6412 | __alignof__ ( type-name ) | |
6413 | && identifier | |
6414 | ||
48b0b196 | 6415 | (C11 permits _Alignof with type names only.) |
d19fa6b5 | 6416 | |
27bf414c JM |
6417 | unary-operator: one of |
6418 | __extension__ __real__ __imag__ | |
6419 | ||
0a35513e AH |
6420 | Transactional Memory: |
6421 | ||
6422 | unary-expression: | |
6423 | transaction-expression | |
6424 | ||
27bf414c JM |
6425 | In addition, the GNU syntax treats ++ and -- as unary operators, so |
6426 | they may be applied to cast expressions with errors for non-lvalues | |
6427 | given later. */ | |
6428 | ||
6429 | static struct c_expr | |
6430 | c_parser_unary_expression (c_parser *parser) | |
6431 | { | |
6432 | int ext; | |
46bdb9cf | 6433 | struct c_expr ret, op; |
c2255bc4 AH |
6434 | location_t op_loc = c_parser_peek_token (parser)->location; |
6435 | location_t exp_loc; | |
6866c6e8 ILT |
6436 | ret.original_code = ERROR_MARK; |
6437 | ret.original_type = NULL; | |
27bf414c JM |
6438 | switch (c_parser_peek_token (parser)->type) |
6439 | { | |
6440 | case CPP_PLUS_PLUS: | |
6441 | c_parser_consume_token (parser); | |
c2255bc4 | 6442 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6443 | op = c_parser_cast_expression (parser, NULL); |
36536d79 BI |
6444 | |
6445 | /* If there is array notations in op, we expand them. */ | |
b72271b9 | 6446 | if (flag_cilkplus && TREE_CODE (op.value) == ARRAY_NOTATION_REF) |
36536d79 BI |
6447 | return fix_array_notation_expr (exp_loc, PREINCREMENT_EXPR, op); |
6448 | else | |
6449 | { | |
6450 | op = default_function_array_read_conversion (exp_loc, op); | |
6451 | return parser_build_unary_op (op_loc, PREINCREMENT_EXPR, op); | |
6452 | } | |
27bf414c JM |
6453 | case CPP_MINUS_MINUS: |
6454 | c_parser_consume_token (parser); | |
c2255bc4 | 6455 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6456 | op = c_parser_cast_expression (parser, NULL); |
36536d79 BI |
6457 | |
6458 | /* If there is array notations in op, we expand them. */ | |
b72271b9 | 6459 | if (flag_cilkplus && TREE_CODE (op.value) == ARRAY_NOTATION_REF) |
36536d79 BI |
6460 | return fix_array_notation_expr (exp_loc, PREDECREMENT_EXPR, op); |
6461 | else | |
6462 | { | |
6463 | op = default_function_array_read_conversion (exp_loc, op); | |
6464 | return parser_build_unary_op (op_loc, PREDECREMENT_EXPR, op); | |
6465 | } | |
27bf414c JM |
6466 | case CPP_AND: |
6467 | c_parser_consume_token (parser); | |
ebfbbdc5 JJ |
6468 | op = c_parser_cast_expression (parser, NULL); |
6469 | mark_exp_read (op.value); | |
6470 | return parser_build_unary_op (op_loc, ADDR_EXPR, op); | |
27bf414c JM |
6471 | case CPP_MULT: |
6472 | c_parser_consume_token (parser); | |
c2255bc4 | 6473 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6474 | op = c_parser_cast_expression (parser, NULL); |
267bac10 | 6475 | op = convert_lvalue_to_rvalue (exp_loc, op, true, true); |
dd865ef6 | 6476 | ret.value = build_indirect_ref (op_loc, op.value, RO_UNARY_STAR); |
27bf414c JM |
6477 | return ret; |
6478 | case CPP_PLUS: | |
8400e75e | 6479 | if (!c_dialect_objc () && !in_system_header_at (input_location)) |
c2255bc4 | 6480 | warning_at (op_loc, |
3ba09659 AH |
6481 | OPT_Wtraditional, |
6482 | "traditional C rejects the unary plus operator"); | |
c7412148 | 6483 | c_parser_consume_token (parser); |
c2255bc4 | 6484 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6485 | op = c_parser_cast_expression (parser, NULL); |
267bac10 | 6486 | op = convert_lvalue_to_rvalue (exp_loc, op, true, true); |
c2255bc4 | 6487 | return parser_build_unary_op (op_loc, CONVERT_EXPR, op); |
27bf414c JM |
6488 | case CPP_MINUS: |
6489 | c_parser_consume_token (parser); | |
c2255bc4 | 6490 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6491 | op = c_parser_cast_expression (parser, NULL); |
267bac10 | 6492 | op = convert_lvalue_to_rvalue (exp_loc, op, true, true); |
c2255bc4 | 6493 | return parser_build_unary_op (op_loc, NEGATE_EXPR, op); |
27bf414c JM |
6494 | case CPP_COMPL: |
6495 | c_parser_consume_token (parser); | |
c2255bc4 | 6496 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6497 | op = c_parser_cast_expression (parser, NULL); |
267bac10 | 6498 | op = convert_lvalue_to_rvalue (exp_loc, op, true, true); |
c2255bc4 | 6499 | return parser_build_unary_op (op_loc, BIT_NOT_EXPR, op); |
27bf414c JM |
6500 | case CPP_NOT: |
6501 | c_parser_consume_token (parser); | |
c2255bc4 | 6502 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6503 | op = c_parser_cast_expression (parser, NULL); |
267bac10 | 6504 | op = convert_lvalue_to_rvalue (exp_loc, op, true, true); |
c2255bc4 | 6505 | return parser_build_unary_op (op_loc, TRUTH_NOT_EXPR, op); |
27bf414c JM |
6506 | case CPP_AND_AND: |
6507 | /* Refer to the address of a label as a pointer. */ | |
6508 | c_parser_consume_token (parser); | |
6509 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
6510 | { | |
6511 | ret.value = finish_label_address_expr | |
c2255bc4 | 6512 | (c_parser_peek_token (parser)->value, op_loc); |
27bf414c | 6513 | c_parser_consume_token (parser); |
27bf414c JM |
6514 | } |
6515 | else | |
6516 | { | |
6517 | c_parser_error (parser, "expected identifier"); | |
6518 | ret.value = error_mark_node; | |
27bf414c | 6519 | } |
43f6dfd3 | 6520 | return ret; |
27bf414c JM |
6521 | case CPP_KEYWORD: |
6522 | switch (c_parser_peek_token (parser)->keyword) | |
6523 | { | |
6524 | case RID_SIZEOF: | |
6525 | return c_parser_sizeof_expression (parser); | |
6526 | case RID_ALIGNOF: | |
6527 | return c_parser_alignof_expression (parser); | |
6528 | case RID_EXTENSION: | |
6529 | c_parser_consume_token (parser); | |
6530 | ext = disable_extension_diagnostics (); | |
6531 | ret = c_parser_cast_expression (parser, NULL); | |
6532 | restore_extension_diagnostics (ext); | |
6533 | return ret; | |
6534 | case RID_REALPART: | |
6535 | c_parser_consume_token (parser); | |
c2255bc4 | 6536 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6537 | op = c_parser_cast_expression (parser, NULL); |
c2255bc4 AH |
6538 | op = default_function_array_conversion (exp_loc, op); |
6539 | return parser_build_unary_op (op_loc, REALPART_EXPR, op); | |
27bf414c JM |
6540 | case RID_IMAGPART: |
6541 | c_parser_consume_token (parser); | |
c2255bc4 | 6542 | exp_loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 6543 | op = c_parser_cast_expression (parser, NULL); |
c2255bc4 AH |
6544 | op = default_function_array_conversion (exp_loc, op); |
6545 | return parser_build_unary_op (op_loc, IMAGPART_EXPR, op); | |
0a35513e AH |
6546 | case RID_TRANSACTION_ATOMIC: |
6547 | case RID_TRANSACTION_RELAXED: | |
6548 | return c_parser_transaction_expression (parser, | |
6549 | c_parser_peek_token (parser)->keyword); | |
27bf414c JM |
6550 | default: |
6551 | return c_parser_postfix_expression (parser); | |
6552 | } | |
6553 | default: | |
6554 | return c_parser_postfix_expression (parser); | |
6555 | } | |
6556 | } | |
6557 | ||
6558 | /* Parse a sizeof expression. */ | |
6559 | ||
6560 | static struct c_expr | |
6561 | c_parser_sizeof_expression (c_parser *parser) | |
6562 | { | |
6563 | struct c_expr expr; | |
c7412148 | 6564 | location_t expr_loc; |
27bf414c JM |
6565 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_SIZEOF)); |
6566 | c_parser_consume_token (parser); | |
7d882b83 | 6567 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
6568 | in_sizeof++; |
6569 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) | |
6570 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
6571 | { | |
6572 | /* Either sizeof ( type-name ) or sizeof unary-expression | |
6573 | starting with a compound literal. */ | |
6574 | struct c_type_name *type_name; | |
6575 | c_parser_consume_token (parser); | |
c7412148 | 6576 | expr_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6577 | type_name = c_parser_type_name (parser); |
6578 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
6579 | if (type_name == NULL) | |
6580 | { | |
6581 | struct c_expr ret; | |
7d882b83 | 6582 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
6583 | in_sizeof--; |
6584 | ret.value = error_mark_node; | |
6585 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 6586 | ret.original_type = NULL; |
27bf414c JM |
6587 | return ret; |
6588 | } | |
6589 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
6590 | { | |
4bd2511b JL |
6591 | expr = c_parser_postfix_expression_after_paren_type (parser, |
6592 | type_name, | |
6593 | expr_loc); | |
6594 | goto sizeof_expr; | |
27bf414c | 6595 | } |
4bd2511b JL |
6596 | /* sizeof ( type-name ). */ |
6597 | c_inhibit_evaluation_warnings--; | |
6598 | in_sizeof--; | |
6599 | return c_expr_sizeof_type (expr_loc, type_name); | |
27bf414c JM |
6600 | } |
6601 | else | |
6602 | { | |
c7412148 | 6603 | expr_loc = c_parser_peek_token (parser)->location; |
27bf414c | 6604 | expr = c_parser_unary_expression (parser); |
4bd2511b JL |
6605 | sizeof_expr: |
6606 | c_inhibit_evaluation_warnings--; | |
6607 | in_sizeof--; | |
6608 | mark_exp_read (expr.value); | |
6609 | if (TREE_CODE (expr.value) == COMPONENT_REF | |
6610 | && DECL_C_BIT_FIELD (TREE_OPERAND (expr.value, 1))) | |
6611 | error_at (expr_loc, "%<sizeof%> applied to a bit-field"); | |
6612 | return c_expr_sizeof_expr (expr_loc, expr); | |
27bf414c JM |
6613 | } |
6614 | } | |
6615 | ||
6616 | /* Parse an alignof expression. */ | |
6617 | ||
6618 | static struct c_expr | |
6619 | c_parser_alignof_expression (c_parser *parser) | |
6620 | { | |
6621 | struct c_expr expr; | |
c2255bc4 | 6622 | location_t loc = c_parser_peek_token (parser)->location; |
d19fa6b5 | 6623 | tree alignof_spelling = c_parser_peek_token (parser)->value; |
27bf414c | 6624 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_ALIGNOF)); |
296674db JM |
6625 | bool is_c11_alignof = strcmp (IDENTIFIER_POINTER (alignof_spelling), |
6626 | "_Alignof") == 0; | |
d19fa6b5 | 6627 | /* A diagnostic is not required for the use of this identifier in |
48b0b196 | 6628 | the implementation namespace; only diagnose it for the C11 |
d19fa6b5 | 6629 | spelling because of existing code using the other spellings. */ |
35aff4fb | 6630 | if (is_c11_alignof) |
d19fa6b5 JM |
6631 | { |
6632 | if (flag_isoc99) | |
35aff4fb MP |
6633 | pedwarn_c99 (loc, OPT_Wpedantic, "ISO C99 does not support %qE", |
6634 | alignof_spelling); | |
d19fa6b5 | 6635 | else |
35aff4fb MP |
6636 | pedwarn_c99 (loc, OPT_Wpedantic, "ISO C90 does not support %qE", |
6637 | alignof_spelling); | |
d19fa6b5 | 6638 | } |
27bf414c | 6639 | c_parser_consume_token (parser); |
7d882b83 | 6640 | c_inhibit_evaluation_warnings++; |
27bf414c JM |
6641 | in_alignof++; |
6642 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN) | |
6643 | && c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
6644 | { | |
6645 | /* Either __alignof__ ( type-name ) or __alignof__ | |
6646 | unary-expression starting with a compound literal. */ | |
24b97832 | 6647 | location_t loc; |
27bf414c JM |
6648 | struct c_type_name *type_name; |
6649 | struct c_expr ret; | |
6650 | c_parser_consume_token (parser); | |
24b97832 | 6651 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
6652 | type_name = c_parser_type_name (parser); |
6653 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
6654 | if (type_name == NULL) | |
6655 | { | |
6656 | struct c_expr ret; | |
7d882b83 | 6657 | c_inhibit_evaluation_warnings--; |
27bf414c JM |
6658 | in_alignof--; |
6659 | ret.value = error_mark_node; | |
6660 | ret.original_code = ERROR_MARK; | |
6866c6e8 | 6661 | ret.original_type = NULL; |
27bf414c JM |
6662 | return ret; |
6663 | } | |
6664 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
6665 | { | |
6666 | expr = c_parser_postfix_expression_after_paren_type (parser, | |
24b97832 ILT |
6667 | type_name, |
6668 | loc); | |
27bf414c JM |
6669 | goto alignof_expr; |
6670 | } | |
6671 | /* alignof ( type-name ). */ | |
7d882b83 | 6672 | c_inhibit_evaluation_warnings--; |
27bf414c | 6673 | in_alignof--; |
296674db JM |
6674 | ret.value = c_sizeof_or_alignof_type (loc, groktypename (type_name, |
6675 | NULL, NULL), | |
6676 | false, is_c11_alignof, 1); | |
27bf414c | 6677 | ret.original_code = ERROR_MARK; |
6866c6e8 | 6678 | ret.original_type = NULL; |
27bf414c JM |
6679 | return ret; |
6680 | } | |
6681 | else | |
6682 | { | |
6683 | struct c_expr ret; | |
6684 | expr = c_parser_unary_expression (parser); | |
6685 | alignof_expr: | |
ebfbbdc5 | 6686 | mark_exp_read (expr.value); |
7d882b83 | 6687 | c_inhibit_evaluation_warnings--; |
27bf414c | 6688 | in_alignof--; |
c1771a20 | 6689 | pedwarn (loc, OPT_Wpedantic, "ISO C does not allow %<%E (expression)%>", |
d19fa6b5 | 6690 | alignof_spelling); |
c2255bc4 | 6691 | ret.value = c_alignof_expr (loc, expr.value); |
27bf414c | 6692 | ret.original_code = ERROR_MARK; |
6866c6e8 | 6693 | ret.original_type = NULL; |
27bf414c JM |
6694 | return ret; |
6695 | } | |
6696 | } | |
6697 | ||
f90e8e2e | 6698 | /* Helper function to read arguments of builtins which are interfaces |
2205ed25 | 6699 | for the middle-end nodes like COMPLEX_EXPR, VEC_PERM_EXPR and |
f90e8e2e AS |
6700 | others. The name of the builtin is passed using BNAME parameter. |
6701 | Function returns true if there were no errors while parsing and | |
86785830 | 6702 | stores the arguments in CEXPR_LIST. */ |
f90e8e2e AS |
6703 | static bool |
6704 | c_parser_get_builtin_args (c_parser *parser, const char *bname, | |
4e7d7b3d JJ |
6705 | vec<c_expr_t, va_gc> **ret_cexpr_list, |
6706 | bool choose_expr_p) | |
f90e8e2e AS |
6707 | { |
6708 | location_t loc = c_parser_peek_token (parser)->location; | |
9771b263 | 6709 | vec<c_expr_t, va_gc> *cexpr_list; |
86785830 | 6710 | c_expr_t expr; |
4e7d7b3d | 6711 | bool saved_force_folding_builtin_constant_p; |
f90e8e2e | 6712 | |
86785830 | 6713 | *ret_cexpr_list = NULL; |
f90e8e2e AS |
6714 | if (c_parser_next_token_is_not (parser, CPP_OPEN_PAREN)) |
6715 | { | |
6716 | error_at (loc, "cannot take address of %qs", bname); | |
6717 | return false; | |
6718 | } | |
6719 | ||
6720 | c_parser_consume_token (parser); | |
6721 | ||
6722 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
6723 | { | |
6724 | c_parser_consume_token (parser); | |
6725 | return true; | |
6726 | } | |
86785830 | 6727 | |
4e7d7b3d JJ |
6728 | saved_force_folding_builtin_constant_p |
6729 | = force_folding_builtin_constant_p; | |
6730 | force_folding_builtin_constant_p |= choose_expr_p; | |
86785830 | 6731 | expr = c_parser_expr_no_commas (parser, NULL); |
4e7d7b3d JJ |
6732 | force_folding_builtin_constant_p |
6733 | = saved_force_folding_builtin_constant_p; | |
9771b263 | 6734 | vec_alloc (cexpr_list, 1); |
b581c05c | 6735 | vec_safe_push (cexpr_list, expr); |
86785830 AS |
6736 | while (c_parser_next_token_is (parser, CPP_COMMA)) |
6737 | { | |
6738 | c_parser_consume_token (parser); | |
6739 | expr = c_parser_expr_no_commas (parser, NULL); | |
b581c05c | 6740 | vec_safe_push (cexpr_list, expr); |
86785830 | 6741 | } |
f90e8e2e AS |
6742 | |
6743 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) | |
6744 | return false; | |
6745 | ||
86785830 | 6746 | *ret_cexpr_list = cexpr_list; |
f90e8e2e AS |
6747 | return true; |
6748 | } | |
6749 | ||
433cc7b0 TT |
6750 | /* This represents a single generic-association. */ |
6751 | ||
6752 | struct c_generic_association | |
6753 | { | |
6754 | /* The location of the starting token of the type. */ | |
6755 | location_t type_location; | |
fb48aadc | 6756 | /* The association's type, or NULL_TREE for 'default'. */ |
433cc7b0 TT |
6757 | tree type; |
6758 | /* The association's expression. */ | |
6759 | struct c_expr expression; | |
6760 | }; | |
6761 | ||
6762 | /* Parse a generic-selection. (C11 6.5.1.1). | |
6763 | ||
6764 | generic-selection: | |
6765 | _Generic ( assignment-expression , generic-assoc-list ) | |
6766 | ||
6767 | generic-assoc-list: | |
6768 | generic-association | |
6769 | generic-assoc-list , generic-association | |
6770 | ||
6771 | generic-association: | |
6772 | type-name : assignment-expression | |
6773 | default : assignment-expression | |
6774 | */ | |
6775 | ||
6776 | static struct c_expr | |
6777 | c_parser_generic_selection (c_parser *parser) | |
6778 | { | |
6779 | vec<c_generic_association> associations = vNULL; | |
6780 | struct c_expr selector, error_expr; | |
6781 | tree selector_type; | |
6782 | struct c_generic_association matched_assoc; | |
6783 | bool match_found = false; | |
6784 | location_t generic_loc, selector_loc; | |
6785 | ||
6786 | error_expr.original_code = ERROR_MARK; | |
6787 | error_expr.original_type = NULL; | |
6788 | error_expr.value = error_mark_node; | |
6789 | matched_assoc.type_location = UNKNOWN_LOCATION; | |
6790 | matched_assoc.type = NULL_TREE; | |
6791 | matched_assoc.expression = error_expr; | |
6792 | ||
6793 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_GENERIC)); | |
6794 | generic_loc = c_parser_peek_token (parser)->location; | |
6795 | c_parser_consume_token (parser); | |
35aff4fb MP |
6796 | if (flag_isoc99) |
6797 | pedwarn_c99 (generic_loc, OPT_Wpedantic, | |
433cc7b0 | 6798 | "ISO C99 does not support %<_Generic%>"); |
35aff4fb MP |
6799 | else |
6800 | pedwarn_c99 (generic_loc, OPT_Wpedantic, | |
433cc7b0 | 6801 | "ISO C90 does not support %<_Generic%>"); |
433cc7b0 TT |
6802 | |
6803 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
6804 | return error_expr; | |
6805 | ||
6806 | c_inhibit_evaluation_warnings++; | |
6807 | selector_loc = c_parser_peek_token (parser)->location; | |
6808 | selector = c_parser_expr_no_commas (parser, NULL); | |
6809 | selector = default_function_array_conversion (selector_loc, selector); | |
6810 | c_inhibit_evaluation_warnings--; | |
6811 | ||
6812 | if (selector.value == error_mark_node) | |
6813 | { | |
6814 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6815 | return selector; | |
6816 | } | |
6817 | selector_type = TREE_TYPE (selector.value); | |
6818 | /* In ISO C terms, rvalues (including the controlling expression of | |
6819 | _Generic) do not have qualified types. */ | |
6820 | if (TREE_CODE (selector_type) != ARRAY_TYPE) | |
6821 | selector_type = TYPE_MAIN_VARIANT (selector_type); | |
6822 | /* In ISO C terms, _Noreturn is not part of the type of expressions | |
6823 | such as &abort, but in GCC it is represented internally as a type | |
6824 | qualifier. */ | |
6825 | if (FUNCTION_POINTER_TYPE_P (selector_type) | |
6826 | && TYPE_QUALS (TREE_TYPE (selector_type)) != TYPE_UNQUALIFIED) | |
6827 | selector_type | |
6828 | = build_pointer_type (TYPE_MAIN_VARIANT (TREE_TYPE (selector_type))); | |
6829 | ||
6830 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
6831 | { | |
6832 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6833 | return error_expr; | |
6834 | } | |
6835 | ||
6836 | while (1) | |
6837 | { | |
6838 | struct c_generic_association assoc, *iter; | |
6839 | unsigned int ix; | |
6840 | c_token *token = c_parser_peek_token (parser); | |
6841 | ||
6842 | assoc.type_location = token->location; | |
6843 | if (token->type == CPP_KEYWORD && token->keyword == RID_DEFAULT) | |
6844 | { | |
6845 | c_parser_consume_token (parser); | |
6846 | assoc.type = NULL_TREE; | |
6847 | } | |
6848 | else | |
6849 | { | |
6850 | struct c_type_name *type_name; | |
6851 | ||
6852 | type_name = c_parser_type_name (parser); | |
6853 | if (type_name == NULL) | |
6854 | { | |
6855 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6856 | goto error_exit; | |
6857 | } | |
6858 | assoc.type = groktypename (type_name, NULL, NULL); | |
6859 | if (assoc.type == error_mark_node) | |
6860 | { | |
6861 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6862 | goto error_exit; | |
6863 | } | |
6864 | ||
6865 | if (TREE_CODE (assoc.type) == FUNCTION_TYPE) | |
6866 | error_at (assoc.type_location, | |
6867 | "%<_Generic%> association has function type"); | |
6868 | else if (!COMPLETE_TYPE_P (assoc.type)) | |
6869 | error_at (assoc.type_location, | |
6870 | "%<_Generic%> association has incomplete type"); | |
6871 | ||
6872 | if (variably_modified_type_p (assoc.type, NULL_TREE)) | |
6873 | error_at (assoc.type_location, | |
6874 | "%<_Generic%> association has " | |
6875 | "variable length type"); | |
6876 | } | |
6877 | ||
6878 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
6879 | { | |
6880 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6881 | goto error_exit; | |
6882 | } | |
6883 | ||
6884 | assoc.expression = c_parser_expr_no_commas (parser, NULL); | |
6885 | if (assoc.expression.value == error_mark_node) | |
6886 | { | |
6887 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6888 | goto error_exit; | |
6889 | } | |
6890 | ||
6891 | for (ix = 0; associations.iterate (ix, &iter); ++ix) | |
6892 | { | |
6893 | if (assoc.type == NULL_TREE) | |
6894 | { | |
6895 | if (iter->type == NULL_TREE) | |
6896 | { | |
6897 | error_at (assoc.type_location, | |
6898 | "duplicate %<default%> case in %<_Generic%>"); | |
6899 | inform (iter->type_location, "original %<default%> is here"); | |
6900 | } | |
6901 | } | |
6902 | else if (iter->type != NULL_TREE) | |
6903 | { | |
6904 | if (comptypes (assoc.type, iter->type)) | |
6905 | { | |
6906 | error_at (assoc.type_location, | |
6907 | "%<_Generic%> specifies two compatible types"); | |
6908 | inform (iter->type_location, "compatible type is here"); | |
6909 | } | |
6910 | } | |
6911 | } | |
6912 | ||
6913 | if (assoc.type == NULL_TREE) | |
6914 | { | |
6915 | if (!match_found) | |
6916 | { | |
6917 | matched_assoc = assoc; | |
6918 | match_found = true; | |
6919 | } | |
6920 | } | |
6921 | else if (comptypes (assoc.type, selector_type)) | |
6922 | { | |
6923 | if (!match_found || matched_assoc.type == NULL_TREE) | |
6924 | { | |
6925 | matched_assoc = assoc; | |
6926 | match_found = true; | |
6927 | } | |
6928 | else | |
6929 | { | |
6930 | error_at (assoc.type_location, | |
6931 | "%<_Generic> selector matches multiple associations"); | |
6932 | inform (matched_assoc.type_location, | |
6933 | "other match is here"); | |
6934 | } | |
6935 | } | |
6936 | ||
6937 | associations.safe_push (assoc); | |
6938 | ||
6939 | if (c_parser_peek_token (parser)->type != CPP_COMMA) | |
6940 | break; | |
6941 | c_parser_consume_token (parser); | |
6942 | } | |
6943 | ||
6944 | associations.release (); | |
6945 | ||
6946 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) | |
6947 | { | |
6948 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
6949 | return error_expr; | |
6950 | } | |
6951 | ||
6952 | if (!match_found) | |
6953 | { | |
6954 | error_at (selector_loc, "%<_Generic%> selector of type %qT is not " | |
6955 | "compatible with any association", | |
6956 | selector_type); | |
6957 | return error_expr; | |
6958 | } | |
6959 | ||
6960 | return matched_assoc.expression; | |
6961 | ||
6962 | error_exit: | |
6963 | associations.release (); | |
6964 | return error_expr; | |
6965 | } | |
f90e8e2e | 6966 | |
27bf414c JM |
6967 | /* Parse a postfix expression (C90 6.3.1-6.3.2, C99 6.5.1-6.5.2). |
6968 | ||
6969 | postfix-expression: | |
6970 | primary-expression | |
6971 | postfix-expression [ expression ] | |
6972 | postfix-expression ( argument-expression-list[opt] ) | |
6973 | postfix-expression . identifier | |
6974 | postfix-expression -> identifier | |
6975 | postfix-expression ++ | |
6976 | postfix-expression -- | |
6977 | ( type-name ) { initializer-list } | |
6978 | ( type-name ) { initializer-list , } | |
6979 | ||
6980 | argument-expression-list: | |
6981 | argument-expression | |
6982 | argument-expression-list , argument-expression | |
6983 | ||
6984 | primary-expression: | |
6985 | identifier | |
6986 | constant | |
6987 | string-literal | |
6988 | ( expression ) | |
433cc7b0 | 6989 | generic-selection |
27bf414c JM |
6990 | |
6991 | GNU extensions: | |
6992 | ||
6993 | primary-expression: | |
6994 | __func__ | |
6995 | (treated as a keyword in GNU C) | |
6996 | __FUNCTION__ | |
6997 | __PRETTY_FUNCTION__ | |
6998 | ( compound-statement ) | |
6999 | __builtin_va_arg ( assignment-expression , type-name ) | |
7000 | __builtin_offsetof ( type-name , offsetof-member-designator ) | |
7001 | __builtin_choose_expr ( assignment-expression , | |
7002 | assignment-expression , | |
7003 | assignment-expression ) | |
7004 | __builtin_types_compatible_p ( type-name , type-name ) | |
d4a83c10 | 7005 | __builtin_complex ( assignment-expression , assignment-expression ) |
f90e8e2e AS |
7006 | __builtin_shuffle ( assignment-expression , assignment-expression ) |
7007 | __builtin_shuffle ( assignment-expression , | |
7008 | assignment-expression , | |
7009 | assignment-expression, ) | |
27bf414c JM |
7010 | |
7011 | offsetof-member-designator: | |
7012 | identifier | |
7013 | offsetof-member-designator . identifier | |
7014 | offsetof-member-designator [ expression ] | |
7015 | ||
7016 | Objective-C: | |
7017 | ||
7018 | primary-expression: | |
7019 | [ objc-receiver objc-message-args ] | |
7020 | @selector ( objc-selector-arg ) | |
7021 | @protocol ( identifier ) | |
7022 | @encode ( type-name ) | |
7023 | objc-string-literal | |
bede2adc | 7024 | Classname . identifier |
27bf414c JM |
7025 | */ |
7026 | ||
7027 | static struct c_expr | |
7028 | c_parser_postfix_expression (c_parser *parser) | |
7029 | { | |
f90e8e2e | 7030 | struct c_expr expr, e1; |
27bf414c | 7031 | struct c_type_name *t1, *t2; |
c2255bc4 | 7032 | location_t loc = c_parser_peek_token (parser)->location;; |
6866c6e8 ILT |
7033 | expr.original_code = ERROR_MARK; |
7034 | expr.original_type = NULL; | |
27bf414c JM |
7035 | switch (c_parser_peek_token (parser)->type) |
7036 | { | |
7037 | case CPP_NUMBER: | |
754ccf7c | 7038 | expr.value = c_parser_peek_token (parser)->value; |
754ccf7c JJ |
7039 | loc = c_parser_peek_token (parser)->location; |
7040 | c_parser_consume_token (parser); | |
7041 | if (TREE_CODE (expr.value) == FIXED_CST | |
7042 | && !targetm.fixed_point_supported_p ()) | |
7043 | { | |
7044 | error_at (loc, "fixed-point types not supported for this target"); | |
7045 | expr.value = error_mark_node; | |
7046 | } | |
7047 | break; | |
27bf414c | 7048 | case CPP_CHAR: |
b6baa67d KVH |
7049 | case CPP_CHAR16: |
7050 | case CPP_CHAR32: | |
27bf414c JM |
7051 | case CPP_WCHAR: |
7052 | expr.value = c_parser_peek_token (parser)->value; | |
27bf414c JM |
7053 | c_parser_consume_token (parser); |
7054 | break; | |
7055 | case CPP_STRING: | |
b6baa67d KVH |
7056 | case CPP_STRING16: |
7057 | case CPP_STRING32: | |
27bf414c | 7058 | case CPP_WSTRING: |
2c6e3f55 | 7059 | case CPP_UTF8STRING: |
27bf414c JM |
7060 | expr.value = c_parser_peek_token (parser)->value; |
7061 | expr.original_code = STRING_CST; | |
7062 | c_parser_consume_token (parser); | |
7063 | break; | |
7064 | case CPP_OBJC_STRING: | |
7065 | gcc_assert (c_dialect_objc ()); | |
7066 | expr.value | |
7067 | = objc_build_string_object (c_parser_peek_token (parser)->value); | |
27bf414c JM |
7068 | c_parser_consume_token (parser); |
7069 | break; | |
7070 | case CPP_NAME: | |
bede2adc | 7071 | switch (c_parser_peek_token (parser)->id_kind) |
27bf414c | 7072 | { |
bede2adc NP |
7073 | case C_ID_ID: |
7074 | { | |
7075 | tree id = c_parser_peek_token (parser)->value; | |
7076 | c_parser_consume_token (parser); | |
7077 | expr.value = build_external_ref (loc, id, | |
7078 | (c_parser_peek_token (parser)->type | |
7079 | == CPP_OPEN_PAREN), | |
7080 | &expr.original_type); | |
7081 | break; | |
7082 | } | |
7083 | case C_ID_CLASSNAME: | |
7084 | { | |
7085 | /* Here we parse the Objective-C 2.0 Class.name dot | |
7086 | syntax. */ | |
7087 | tree class_name = c_parser_peek_token (parser)->value; | |
7088 | tree component; | |
7089 | c_parser_consume_token (parser); | |
7090 | gcc_assert (c_dialect_objc ()); | |
7091 | if (!c_parser_require (parser, CPP_DOT, "expected %<.%>")) | |
7092 | { | |
7093 | expr.value = error_mark_node; | |
7094 | break; | |
7095 | } | |
7096 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7097 | { | |
7098 | c_parser_error (parser, "expected identifier"); | |
7099 | expr.value = error_mark_node; | |
7100 | break; | |
7101 | } | |
7102 | component = c_parser_peek_token (parser)->value; | |
7103 | c_parser_consume_token (parser); | |
7104 | expr.value = objc_build_class_component_ref (class_name, | |
7105 | component); | |
7106 | break; | |
7107 | } | |
7108 | default: | |
27bf414c JM |
7109 | c_parser_error (parser, "expected expression"); |
7110 | expr.value = error_mark_node; | |
27bf414c JM |
7111 | break; |
7112 | } | |
27bf414c JM |
7113 | break; |
7114 | case CPP_OPEN_PAREN: | |
7115 | /* A parenthesized expression, statement expression or compound | |
7116 | literal. */ | |
7117 | if (c_parser_peek_2nd_token (parser)->type == CPP_OPEN_BRACE) | |
7118 | { | |
7119 | /* A statement expression. */ | |
7120 | tree stmt; | |
c2255bc4 | 7121 | location_t brace_loc; |
27bf414c | 7122 | c_parser_consume_token (parser); |
c2255bc4 | 7123 | brace_loc = c_parser_peek_token (parser)->location; |
27bf414c | 7124 | c_parser_consume_token (parser); |
38e01f9e | 7125 | if (!building_stmt_list_p ()) |
27bf414c | 7126 | { |
c2255bc4 | 7127 | error_at (loc, "braced-group within expression allowed " |
3ba09659 | 7128 | "only inside a function"); |
27bf414c JM |
7129 | parser->error = true; |
7130 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL); | |
7131 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
7132 | expr.value = error_mark_node; | |
27bf414c JM |
7133 | break; |
7134 | } | |
7135 | stmt = c_begin_stmt_expr (); | |
7136 | c_parser_compound_statement_nostart (parser); | |
7137 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7138 | "expected %<)%>"); | |
c1771a20 | 7139 | pedwarn (loc, OPT_Wpedantic, |
509c9d60 | 7140 | "ISO C forbids braced-groups within expressions"); |
c2255bc4 | 7141 | expr.value = c_finish_stmt_expr (brace_loc, stmt); |
82c3c067 | 7142 | mark_exp_read (expr.value); |
27bf414c JM |
7143 | } |
7144 | else if (c_token_starts_typename (c_parser_peek_2nd_token (parser))) | |
7145 | { | |
7146 | /* A compound literal. ??? Can we actually get here rather | |
7147 | than going directly to | |
7148 | c_parser_postfix_expression_after_paren_type from | |
7149 | elsewhere? */ | |
24b97832 | 7150 | location_t loc; |
27bf414c JM |
7151 | struct c_type_name *type_name; |
7152 | c_parser_consume_token (parser); | |
24b97832 | 7153 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
7154 | type_name = c_parser_type_name (parser); |
7155 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7156 | "expected %<)%>"); | |
7157 | if (type_name == NULL) | |
7158 | { | |
7159 | expr.value = error_mark_node; | |
27bf414c JM |
7160 | } |
7161 | else | |
7162 | expr = c_parser_postfix_expression_after_paren_type (parser, | |
24b97832 ILT |
7163 | type_name, |
7164 | loc); | |
27bf414c JM |
7165 | } |
7166 | else | |
7167 | { | |
7168 | /* A parenthesized expression. */ | |
7169 | c_parser_consume_token (parser); | |
7170 | expr = c_parser_expression (parser); | |
7171 | if (TREE_CODE (expr.value) == MODIFY_EXPR) | |
7172 | TREE_NO_WARNING (expr.value) = 1; | |
928c19bb JM |
7173 | if (expr.original_code != C_MAYBE_CONST_EXPR) |
7174 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 7175 | /* Don't change EXPR.ORIGINAL_TYPE. */ |
27bf414c JM |
7176 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
7177 | "expected %<)%>"); | |
7178 | } | |
7179 | break; | |
7180 | case CPP_KEYWORD: | |
7181 | switch (c_parser_peek_token (parser)->keyword) | |
7182 | { | |
7183 | case RID_FUNCTION_NAME: | |
6dc99c33 MP |
7184 | pedwarn (loc, OPT_Wpedantic, "ISO C does not support " |
7185 | "%<__FUNCTION__%> predefined identifier"); | |
7186 | expr.value = fname_decl (loc, | |
7187 | c_parser_peek_token (parser)->keyword, | |
7188 | c_parser_peek_token (parser)->value); | |
7189 | c_parser_consume_token (parser); | |
7190 | break; | |
27bf414c | 7191 | case RID_PRETTY_FUNCTION_NAME: |
6dc99c33 MP |
7192 | pedwarn (loc, OPT_Wpedantic, "ISO C does not support " |
7193 | "%<__PRETTY_FUNCTION__%> predefined identifier"); | |
7194 | expr.value = fname_decl (loc, | |
7195 | c_parser_peek_token (parser)->keyword, | |
7196 | c_parser_peek_token (parser)->value); | |
7197 | c_parser_consume_token (parser); | |
7198 | break; | |
27bf414c | 7199 | case RID_C99_FUNCTION_NAME: |
6dc99c33 MP |
7200 | pedwarn_c90 (loc, OPT_Wpedantic, "ISO C90 does not support " |
7201 | "%<__func__%> predefined identifier"); | |
c2255bc4 | 7202 | expr.value = fname_decl (loc, |
3ba09659 | 7203 | c_parser_peek_token (parser)->keyword, |
27bf414c | 7204 | c_parser_peek_token (parser)->value); |
27bf414c JM |
7205 | c_parser_consume_token (parser); |
7206 | break; | |
7207 | case RID_VA_ARG: | |
7208 | c_parser_consume_token (parser); | |
7209 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
7210 | { | |
7211 | expr.value = error_mark_node; | |
27bf414c JM |
7212 | break; |
7213 | } | |
7214 | e1 = c_parser_expr_no_commas (parser, NULL); | |
ebfbbdc5 | 7215 | mark_exp_read (e1.value); |
928c19bb | 7216 | e1.value = c_fully_fold (e1.value, false, NULL); |
27bf414c JM |
7217 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) |
7218 | { | |
7219 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
7220 | expr.value = error_mark_node; | |
27bf414c JM |
7221 | break; |
7222 | } | |
72b5577d | 7223 | loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
7224 | t1 = c_parser_type_name (parser); |
7225 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7226 | "expected %<)%>"); | |
7227 | if (t1 == NULL) | |
7228 | { | |
7229 | expr.value = error_mark_node; | |
27bf414c JM |
7230 | } |
7231 | else | |
7232 | { | |
928c19bb | 7233 | tree type_expr = NULL_TREE; |
c2255bc4 AH |
7234 | expr.value = c_build_va_arg (loc, e1.value, |
7235 | groktypename (t1, &type_expr, NULL)); | |
928c19bb JM |
7236 | if (type_expr) |
7237 | { | |
7238 | expr.value = build2 (C_MAYBE_CONST_EXPR, | |
7239 | TREE_TYPE (expr.value), type_expr, | |
7240 | expr.value); | |
7241 | C_MAYBE_CONST_EXPR_NON_CONST (expr.value) = true; | |
7242 | } | |
27bf414c JM |
7243 | } |
7244 | break; | |
7245 | case RID_OFFSETOF: | |
7246 | c_parser_consume_token (parser); | |
7247 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
7248 | { | |
7249 | expr.value = error_mark_node; | |
27bf414c JM |
7250 | break; |
7251 | } | |
7252 | t1 = c_parser_type_name (parser); | |
7253 | if (t1 == NULL) | |
29ce73cb | 7254 | parser->error = true; |
27bf414c | 7255 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) |
29ce73cb PB |
7256 | gcc_assert (parser->error); |
7257 | if (parser->error) | |
27bf414c JM |
7258 | { |
7259 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
7260 | expr.value = error_mark_node; | |
27bf414c JM |
7261 | break; |
7262 | } | |
29ce73cb | 7263 | |
27bf414c | 7264 | { |
928c19bb | 7265 | tree type = groktypename (t1, NULL, NULL); |
27bf414c JM |
7266 | tree offsetof_ref; |
7267 | if (type == error_mark_node) | |
7268 | offsetof_ref = error_mark_node; | |
7269 | else | |
c2255bc4 AH |
7270 | { |
7271 | offsetof_ref = build1 (INDIRECT_REF, type, null_pointer_node); | |
7272 | SET_EXPR_LOCATION (offsetof_ref, loc); | |
7273 | } | |
27bf414c JM |
7274 | /* Parse the second argument to __builtin_offsetof. We |
7275 | must have one identifier, and beyond that we want to | |
7276 | accept sub structure and sub array references. */ | |
7277 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
7278 | { | |
7279 | offsetof_ref = build_component_ref | |
c2255bc4 | 7280 | (loc, offsetof_ref, c_parser_peek_token (parser)->value); |
27bf414c JM |
7281 | c_parser_consume_token (parser); |
7282 | while (c_parser_next_token_is (parser, CPP_DOT) | |
7283 | || c_parser_next_token_is (parser, | |
634b5df5 JJ |
7284 | CPP_OPEN_SQUARE) |
7285 | || c_parser_next_token_is (parser, | |
7286 | CPP_DEREF)) | |
27bf414c | 7287 | { |
634b5df5 JJ |
7288 | if (c_parser_next_token_is (parser, CPP_DEREF)) |
7289 | { | |
7290 | loc = c_parser_peek_token (parser)->location; | |
c2255bc4 AH |
7291 | offsetof_ref = build_array_ref (loc, |
7292 | offsetof_ref, | |
7293 | integer_zero_node); | |
634b5df5 JJ |
7294 | goto do_dot; |
7295 | } | |
7296 | else if (c_parser_next_token_is (parser, CPP_DOT)) | |
27bf414c | 7297 | { |
634b5df5 | 7298 | do_dot: |
27bf414c JM |
7299 | c_parser_consume_token (parser); |
7300 | if (c_parser_next_token_is_not (parser, | |
7301 | CPP_NAME)) | |
7302 | { | |
7303 | c_parser_error (parser, "expected identifier"); | |
7304 | break; | |
7305 | } | |
7306 | offsetof_ref = build_component_ref | |
c2255bc4 | 7307 | (loc, offsetof_ref, |
27bf414c JM |
7308 | c_parser_peek_token (parser)->value); |
7309 | c_parser_consume_token (parser); | |
7310 | } | |
7311 | else | |
7312 | { | |
267bac10 | 7313 | struct c_expr ce; |
27bf414c | 7314 | tree idx; |
6a3799eb | 7315 | loc = c_parser_peek_token (parser)->location; |
27bf414c | 7316 | c_parser_consume_token (parser); |
267bac10 JM |
7317 | ce = c_parser_expression (parser); |
7318 | ce = convert_lvalue_to_rvalue (loc, ce, false, false); | |
7319 | idx = ce.value; | |
928c19bb | 7320 | idx = c_fully_fold (idx, false, NULL); |
27bf414c JM |
7321 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, |
7322 | "expected %<]%>"); | |
c2255bc4 | 7323 | offsetof_ref = build_array_ref (loc, offsetof_ref, idx); |
27bf414c JM |
7324 | } |
7325 | } | |
7326 | } | |
7327 | else | |
7328 | c_parser_error (parser, "expected identifier"); | |
7329 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7330 | "expected %<)%>"); | |
cf9e9959 | 7331 | expr.value = fold_offsetof (offsetof_ref); |
27bf414c JM |
7332 | } |
7333 | break; | |
7334 | case RID_CHOOSE_EXPR: | |
27bf414c | 7335 | { |
9771b263 | 7336 | vec<c_expr_t, va_gc> *cexpr_list; |
86785830 AS |
7337 | c_expr_t *e1_p, *e2_p, *e3_p; |
7338 | tree c; | |
27bf414c | 7339 | |
f90e8e2e AS |
7340 | c_parser_consume_token (parser); |
7341 | if (!c_parser_get_builtin_args (parser, | |
7342 | "__builtin_choose_expr", | |
4e7d7b3d | 7343 | &cexpr_list, true)) |
f90e8e2e AS |
7344 | { |
7345 | expr.value = error_mark_node; | |
7346 | break; | |
7347 | } | |
7348 | ||
9771b263 | 7349 | if (vec_safe_length (cexpr_list) != 3) |
f90e8e2e AS |
7350 | { |
7351 | error_at (loc, "wrong number of arguments to " | |
7352 | "%<__builtin_choose_expr%>"); | |
7353 | expr.value = error_mark_node; | |
7354 | break; | |
7355 | } | |
86785830 | 7356 | |
9771b263 DN |
7357 | e1_p = &(*cexpr_list)[0]; |
7358 | e2_p = &(*cexpr_list)[1]; | |
7359 | e3_p = &(*cexpr_list)[2]; | |
86785830 AS |
7360 | |
7361 | c = e1_p->value; | |
7362 | mark_exp_read (e2_p->value); | |
7363 | mark_exp_read (e3_p->value); | |
928c19bb JM |
7364 | if (TREE_CODE (c) != INTEGER_CST |
7365 | || !INTEGRAL_TYPE_P (TREE_TYPE (c))) | |
3ba09659 AH |
7366 | error_at (loc, |
7367 | "first argument to %<__builtin_choose_expr%> not" | |
7368 | " a constant"); | |
928c19bb | 7369 | constant_expression_warning (c); |
86785830 | 7370 | expr = integer_zerop (c) ? *e3_p : *e2_p; |
f90e8e2e | 7371 | break; |
27bf414c | 7372 | } |
27bf414c JM |
7373 | case RID_TYPES_COMPATIBLE_P: |
7374 | c_parser_consume_token (parser); | |
7375 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
7376 | { | |
7377 | expr.value = error_mark_node; | |
27bf414c JM |
7378 | break; |
7379 | } | |
7380 | t1 = c_parser_type_name (parser); | |
7381 | if (t1 == NULL) | |
7382 | { | |
7383 | expr.value = error_mark_node; | |
27bf414c JM |
7384 | break; |
7385 | } | |
7386 | if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>")) | |
7387 | { | |
7388 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
7389 | expr.value = error_mark_node; | |
27bf414c JM |
7390 | break; |
7391 | } | |
7392 | t2 = c_parser_type_name (parser); | |
7393 | if (t2 == NULL) | |
7394 | { | |
7395 | expr.value = error_mark_node; | |
27bf414c JM |
7396 | break; |
7397 | } | |
7398 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7399 | "expected %<)%>"); | |
7400 | { | |
7401 | tree e1, e2; | |
9abfe986 AP |
7402 | e1 = groktypename (t1, NULL, NULL); |
7403 | e2 = groktypename (t2, NULL, NULL); | |
7404 | if (e1 == error_mark_node || e2 == error_mark_node) | |
7405 | { | |
7406 | expr.value = error_mark_node; | |
7407 | break; | |
7408 | } | |
27bf414c | 7409 | |
9abfe986 AP |
7410 | e1 = TYPE_MAIN_VARIANT (e1); |
7411 | e2 = TYPE_MAIN_VARIANT (e2); | |
27bf414c | 7412 | |
9a9d280e AS |
7413 | expr.value |
7414 | = comptypes (e1, e2) ? integer_one_node : integer_zero_node; | |
27bf414c JM |
7415 | } |
7416 | break; | |
74893f25 RH |
7417 | case RID_BUILTIN_CALL_WITH_STATIC_CHAIN: |
7418 | { | |
7419 | vec<c_expr_t, va_gc> *cexpr_list; | |
7420 | c_expr_t *e2_p; | |
7421 | tree chain_value; | |
7422 | ||
7423 | c_parser_consume_token (parser); | |
7424 | if (!c_parser_get_builtin_args (parser, | |
7425 | "__builtin_call_with_static_chain", | |
7426 | &cexpr_list, false)) | |
7427 | { | |
7428 | expr.value = error_mark_node; | |
7429 | break; | |
7430 | } | |
7431 | if (vec_safe_length (cexpr_list) != 2) | |
7432 | { | |
7433 | error_at (loc, "wrong number of arguments to " | |
7434 | "%<__builtin_call_with_static_chain%>"); | |
7435 | expr.value = error_mark_node; | |
7436 | break; | |
7437 | } | |
7438 | ||
7439 | expr = (*cexpr_list)[0]; | |
7440 | e2_p = &(*cexpr_list)[1]; | |
7441 | *e2_p = convert_lvalue_to_rvalue (loc, *e2_p, true, true); | |
7442 | chain_value = e2_p->value; | |
7443 | mark_exp_read (chain_value); | |
7444 | ||
7445 | if (TREE_CODE (expr.value) != CALL_EXPR) | |
7446 | error_at (loc, "first argument to " | |
7447 | "%<__builtin_call_with_static_chain%> " | |
7448 | "must be a call expression"); | |
7449 | else if (TREE_CODE (TREE_TYPE (chain_value)) != POINTER_TYPE) | |
7450 | error_at (loc, "second argument to " | |
7451 | "%<__builtin_call_with_static_chain%> " | |
7452 | "must be a pointer type"); | |
7453 | else | |
7454 | CALL_EXPR_STATIC_CHAIN (expr.value) = chain_value; | |
7455 | break; | |
7456 | } | |
d4a83c10 | 7457 | case RID_BUILTIN_COMPLEX: |
86785830 | 7458 | { |
9771b263 | 7459 | vec<c_expr_t, va_gc> *cexpr_list; |
86785830 AS |
7460 | c_expr_t *e1_p, *e2_p; |
7461 | ||
f90e8e2e AS |
7462 | c_parser_consume_token (parser); |
7463 | if (!c_parser_get_builtin_args (parser, | |
7464 | "__builtin_complex", | |
4e7d7b3d | 7465 | &cexpr_list, false)) |
f90e8e2e AS |
7466 | { |
7467 | expr.value = error_mark_node; | |
7468 | break; | |
7469 | } | |
7470 | ||
9771b263 | 7471 | if (vec_safe_length (cexpr_list) != 2) |
f90e8e2e AS |
7472 | { |
7473 | error_at (loc, "wrong number of arguments to " | |
7474 | "%<__builtin_complex%>"); | |
7475 | expr.value = error_mark_node; | |
7476 | break; | |
7477 | } | |
86785830 | 7478 | |
9771b263 DN |
7479 | e1_p = &(*cexpr_list)[0]; |
7480 | e2_p = &(*cexpr_list)[1]; | |
86785830 | 7481 | |
267bac10 | 7482 | *e1_p = convert_lvalue_to_rvalue (loc, *e1_p, true, true); |
86785830 AS |
7483 | if (TREE_CODE (e1_p->value) == EXCESS_PRECISION_EXPR) |
7484 | e1_p->value = convert (TREE_TYPE (e1_p->value), | |
7485 | TREE_OPERAND (e1_p->value, 0)); | |
267bac10 | 7486 | *e2_p = convert_lvalue_to_rvalue (loc, *e2_p, true, true); |
86785830 AS |
7487 | if (TREE_CODE (e2_p->value) == EXCESS_PRECISION_EXPR) |
7488 | e2_p->value = convert (TREE_TYPE (e2_p->value), | |
7489 | TREE_OPERAND (e2_p->value, 0)); | |
7490 | if (!SCALAR_FLOAT_TYPE_P (TREE_TYPE (e1_p->value)) | |
7491 | || DECIMAL_FLOAT_TYPE_P (TREE_TYPE (e1_p->value)) | |
7492 | || !SCALAR_FLOAT_TYPE_P (TREE_TYPE (e2_p->value)) | |
7493 | || DECIMAL_FLOAT_TYPE_P (TREE_TYPE (e2_p->value))) | |
f90e8e2e AS |
7494 | { |
7495 | error_at (loc, "%<__builtin_complex%> operand " | |
7496 | "not of real binary floating-point type"); | |
7497 | expr.value = error_mark_node; | |
7498 | break; | |
7499 | } | |
86785830 AS |
7500 | if (TYPE_MAIN_VARIANT (TREE_TYPE (e1_p->value)) |
7501 | != TYPE_MAIN_VARIANT (TREE_TYPE (e2_p->value))) | |
f90e8e2e AS |
7502 | { |
7503 | error_at (loc, | |
7504 | "%<__builtin_complex%> operands of different types"); | |
7505 | expr.value = error_mark_node; | |
7506 | break; | |
7507 | } | |
f3bede71 MP |
7508 | pedwarn_c90 (loc, OPT_Wpedantic, |
7509 | "ISO C90 does not support complex types"); | |
f90e8e2e | 7510 | expr.value = build2 (COMPLEX_EXPR, |
86785830 AS |
7511 | build_complex_type |
7512 | (TYPE_MAIN_VARIANT | |
7513 | (TREE_TYPE (e1_p->value))), | |
7514 | e1_p->value, e2_p->value); | |
f90e8e2e AS |
7515 | break; |
7516 | } | |
7517 | case RID_BUILTIN_SHUFFLE: | |
7518 | { | |
9771b263 | 7519 | vec<c_expr_t, va_gc> *cexpr_list; |
9243c51d JJ |
7520 | unsigned int i; |
7521 | c_expr_t *p; | |
86785830 | 7522 | |
f90e8e2e AS |
7523 | c_parser_consume_token (parser); |
7524 | if (!c_parser_get_builtin_args (parser, | |
7525 | "__builtin_shuffle", | |
4e7d7b3d | 7526 | &cexpr_list, false)) |
f90e8e2e AS |
7527 | { |
7528 | expr.value = error_mark_node; | |
7529 | break; | |
7530 | } | |
7531 | ||
9771b263 | 7532 | FOR_EACH_VEC_SAFE_ELT (cexpr_list, i, p) |
267bac10 | 7533 | *p = convert_lvalue_to_rvalue (loc, *p, true, true); |
9243c51d | 7534 | |
9771b263 | 7535 | if (vec_safe_length (cexpr_list) == 2) |
86785830 | 7536 | expr.value = |
2205ed25 | 7537 | c_build_vec_perm_expr |
9771b263 DN |
7538 | (loc, (*cexpr_list)[0].value, |
7539 | NULL_TREE, (*cexpr_list)[1].value); | |
86785830 | 7540 | |
9771b263 | 7541 | else if (vec_safe_length (cexpr_list) == 3) |
86785830 | 7542 | expr.value = |
2205ed25 | 7543 | c_build_vec_perm_expr |
9771b263 DN |
7544 | (loc, (*cexpr_list)[0].value, |
7545 | (*cexpr_list)[1].value, | |
7546 | (*cexpr_list)[2].value); | |
f90e8e2e AS |
7547 | else |
7548 | { | |
7549 | error_at (loc, "wrong number of arguments to " | |
7550 | "%<__builtin_shuffle%>"); | |
7551 | expr.value = error_mark_node; | |
7552 | } | |
7553 | break; | |
7554 | } | |
27bf414c JM |
7555 | case RID_AT_SELECTOR: |
7556 | gcc_assert (c_dialect_objc ()); | |
7557 | c_parser_consume_token (parser); | |
7558 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
7559 | { | |
7560 | expr.value = error_mark_node; | |
27bf414c JM |
7561 | break; |
7562 | } | |
7563 | { | |
7564 | tree sel = c_parser_objc_selector_arg (parser); | |
7565 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7566 | "expected %<)%>"); | |
c2255bc4 | 7567 | expr.value = objc_build_selector_expr (loc, sel); |
27bf414c JM |
7568 | } |
7569 | break; | |
7570 | case RID_AT_PROTOCOL: | |
7571 | gcc_assert (c_dialect_objc ()); | |
7572 | c_parser_consume_token (parser); | |
7573 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
7574 | { | |
7575 | expr.value = error_mark_node; | |
27bf414c JM |
7576 | break; |
7577 | } | |
7578 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
7579 | { | |
7580 | c_parser_error (parser, "expected identifier"); | |
7581 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
7582 | expr.value = error_mark_node; | |
27bf414c JM |
7583 | break; |
7584 | } | |
7585 | { | |
7586 | tree id = c_parser_peek_token (parser)->value; | |
7587 | c_parser_consume_token (parser); | |
7588 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7589 | "expected %<)%>"); | |
7590 | expr.value = objc_build_protocol_expr (id); | |
27bf414c JM |
7591 | } |
7592 | break; | |
7593 | case RID_AT_ENCODE: | |
7594 | /* Extension to support C-structures in the archiver. */ | |
7595 | gcc_assert (c_dialect_objc ()); | |
7596 | c_parser_consume_token (parser); | |
7597 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
7598 | { | |
7599 | expr.value = error_mark_node; | |
27bf414c JM |
7600 | break; |
7601 | } | |
7602 | t1 = c_parser_type_name (parser); | |
7603 | if (t1 == NULL) | |
7604 | { | |
7605 | expr.value = error_mark_node; | |
27bf414c JM |
7606 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); |
7607 | break; | |
7608 | } | |
7609 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
7610 | "expected %<)%>"); | |
7611 | { | |
928c19bb | 7612 | tree type = groktypename (t1, NULL, NULL); |
27bf414c | 7613 | expr.value = objc_build_encode_expr (type); |
27bf414c JM |
7614 | } |
7615 | break; | |
433cc7b0 TT |
7616 | case RID_GENERIC: |
7617 | expr = c_parser_generic_selection (parser); | |
7618 | break; | |
939b37da BI |
7619 | case RID_CILK_SPAWN: |
7620 | c_parser_consume_token (parser); | |
b72271b9 | 7621 | if (!flag_cilkplus) |
939b37da BI |
7622 | { |
7623 | error_at (loc, "-fcilkplus must be enabled to use " | |
7624 | "%<_Cilk_spawn%>"); | |
7625 | expr = c_parser_postfix_expression (parser); | |
7626 | expr.value = error_mark_node; | |
7627 | } | |
9a74f20c | 7628 | else if (c_parser_peek_token (parser)->keyword == RID_CILK_SPAWN) |
939b37da BI |
7629 | { |
7630 | error_at (loc, "consecutive %<_Cilk_spawn%> keywords " | |
7631 | "are not permitted"); | |
7632 | /* Now flush out all the _Cilk_spawns. */ | |
7633 | while (c_parser_peek_token (parser)->keyword == RID_CILK_SPAWN) | |
7634 | c_parser_consume_token (parser); | |
7635 | expr = c_parser_postfix_expression (parser); | |
7636 | } | |
7637 | else | |
7638 | { | |
7639 | expr = c_parser_postfix_expression (parser); | |
7640 | expr.value = build_cilk_spawn (loc, expr.value); | |
7641 | } | |
7642 | break; | |
27bf414c JM |
7643 | default: |
7644 | c_parser_error (parser, "expected expression"); | |
7645 | expr.value = error_mark_node; | |
27bf414c JM |
7646 | break; |
7647 | } | |
7648 | break; | |
7649 | case CPP_OPEN_SQUARE: | |
7650 | if (c_dialect_objc ()) | |
7651 | { | |
7652 | tree receiver, args; | |
7653 | c_parser_consume_token (parser); | |
7654 | receiver = c_parser_objc_receiver (parser); | |
7655 | args = c_parser_objc_message_args (parser); | |
7656 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
7657 | "expected %<]%>"); | |
eb345401 | 7658 | expr.value = objc_build_message_expr (receiver, args); |
27bf414c JM |
7659 | break; |
7660 | } | |
7661 | /* Else fall through to report error. */ | |
7662 | default: | |
7663 | c_parser_error (parser, "expected expression"); | |
7664 | expr.value = error_mark_node; | |
27bf414c JM |
7665 | break; |
7666 | } | |
c2255bc4 | 7667 | return c_parser_postfix_expression_after_primary (parser, loc, expr); |
27bf414c JM |
7668 | } |
7669 | ||
7670 | /* Parse a postfix expression after a parenthesized type name: the | |
7671 | brace-enclosed initializer of a compound literal, possibly followed | |
7672 | by some postfix operators. This is separate because it is not | |
7673 | possible to tell until after the type name whether a cast | |
7674 | expression has a cast or a compound literal, or whether the operand | |
7675 | of sizeof is a parenthesized type name or starts with a compound | |
24b97832 ILT |
7676 | literal. TYPE_LOC is the location where TYPE_NAME starts--the |
7677 | location of the first token after the parentheses around the type | |
7678 | name. */ | |
27bf414c JM |
7679 | |
7680 | static struct c_expr | |
7681 | c_parser_postfix_expression_after_paren_type (c_parser *parser, | |
24b97832 ILT |
7682 | struct c_type_name *type_name, |
7683 | location_t type_loc) | |
27bf414c JM |
7684 | { |
7685 | tree type; | |
7686 | struct c_expr init; | |
928c19bb | 7687 | bool non_const; |
27bf414c | 7688 | struct c_expr expr; |
c7412148 | 7689 | location_t start_loc; |
928c19bb JM |
7690 | tree type_expr = NULL_TREE; |
7691 | bool type_expr_const = true; | |
c2255bc4 | 7692 | check_compound_literal_type (type_loc, type_name); |
27bf414c | 7693 | start_init (NULL_TREE, NULL, 0); |
928c19bb | 7694 | type = groktypename (type_name, &type_expr, &type_expr_const); |
c7412148 | 7695 | start_loc = c_parser_peek_token (parser)->location; |
85cad37c | 7696 | if (type != error_mark_node && C_TYPE_VARIABLE_SIZE (type)) |
27bf414c | 7697 | { |
24b97832 | 7698 | error_at (type_loc, "compound literal has variable size"); |
27bf414c JM |
7699 | type = error_mark_node; |
7700 | } | |
7701 | init = c_parser_braced_init (parser, type, false); | |
7702 | finish_init (); | |
d033409e | 7703 | maybe_warn_string_init (type_loc, type, init); |
27bf414c | 7704 | |
36c5e70a BE |
7705 | if (type != error_mark_node |
7706 | && !ADDR_SPACE_GENERIC_P (TYPE_ADDR_SPACE (type)) | |
7707 | && current_function_decl) | |
7708 | { | |
7709 | error ("compound literal qualified by address-space qualifier"); | |
7710 | type = error_mark_node; | |
7711 | } | |
7712 | ||
f3bede71 | 7713 | pedwarn_c90 (start_loc, OPT_Wpedantic, "ISO C90 forbids compound literals"); |
928c19bb JM |
7714 | non_const = ((init.value && TREE_CODE (init.value) == CONSTRUCTOR) |
7715 | ? CONSTRUCTOR_NON_CONST (init.value) | |
7716 | : init.original_code == C_MAYBE_CONST_EXPR); | |
7717 | non_const |= !type_expr_const; | |
c2255bc4 | 7718 | expr.value = build_compound_literal (start_loc, type, init.value, non_const); |
27bf414c | 7719 | expr.original_code = ERROR_MARK; |
6866c6e8 | 7720 | expr.original_type = NULL; |
928c19bb JM |
7721 | if (type_expr) |
7722 | { | |
7723 | if (TREE_CODE (expr.value) == C_MAYBE_CONST_EXPR) | |
7724 | { | |
7725 | gcc_assert (C_MAYBE_CONST_EXPR_PRE (expr.value) == NULL_TREE); | |
7726 | C_MAYBE_CONST_EXPR_PRE (expr.value) = type_expr; | |
7727 | } | |
7728 | else | |
7729 | { | |
7730 | gcc_assert (!non_const); | |
7731 | expr.value = build2 (C_MAYBE_CONST_EXPR, type, | |
7732 | type_expr, expr.value); | |
7733 | } | |
7734 | } | |
c2255bc4 | 7735 | return c_parser_postfix_expression_after_primary (parser, start_loc, expr); |
27bf414c JM |
7736 | } |
7737 | ||
1a4049e7 JJ |
7738 | /* Callback function for sizeof_pointer_memaccess_warning to compare |
7739 | types. */ | |
7740 | ||
7741 | static bool | |
7742 | sizeof_ptr_memacc_comptypes (tree type1, tree type2) | |
7743 | { | |
7744 | return comptypes (type1, type2) == 1; | |
7745 | } | |
7746 | ||
27bf414c | 7747 | /* Parse a postfix expression after the initial primary or compound |
c2255bc4 AH |
7748 | literal; that is, parse a series of postfix operators. |
7749 | ||
7750 | EXPR_LOC is the location of the primary expression. */ | |
27bf414c JM |
7751 | |
7752 | static struct c_expr | |
7753 | c_parser_postfix_expression_after_primary (c_parser *parser, | |
c2255bc4 | 7754 | location_t expr_loc, |
27bf414c JM |
7755 | struct c_expr expr) |
7756 | { | |
928c19bb | 7757 | struct c_expr orig_expr; |
bbbbb16a | 7758 | tree ident, idx; |
3a785c97 JJ |
7759 | location_t sizeof_arg_loc[3]; |
7760 | tree sizeof_arg[3]; | |
b108f48f | 7761 | unsigned int literal_zero_mask; |
3a785c97 | 7762 | unsigned int i; |
9771b263 | 7763 | vec<tree, va_gc> *exprlist; |
2ee028f1 | 7764 | vec<tree, va_gc> *origtypes = NULL; |
81e5eca8 MP |
7765 | vec<location_t> arg_loc = vNULL; |
7766 | ||
27bf414c JM |
7767 | while (true) |
7768 | { | |
c2255bc4 | 7769 | location_t op_loc = c_parser_peek_token (parser)->location; |
27bf414c JM |
7770 | switch (c_parser_peek_token (parser)->type) |
7771 | { | |
7772 | case CPP_OPEN_SQUARE: | |
7773 | /* Array reference. */ | |
7774 | c_parser_consume_token (parser); | |
b72271b9 | 7775 | if (flag_cilkplus |
36536d79 BI |
7776 | && c_parser_peek_token (parser)->type == CPP_COLON) |
7777 | /* If we are here, then we have something like this: | |
7778 | Array [ : ] | |
7779 | */ | |
7780 | expr.value = c_parser_array_notation (expr_loc, parser, NULL_TREE, | |
7781 | expr.value); | |
7782 | else | |
7783 | { | |
7784 | idx = c_parser_expression (parser).value; | |
7785 | /* Here we have 3 options: | |
7786 | 1. Array [EXPR] -- Normal Array call. | |
7787 | 2. Array [EXPR : EXPR] -- Array notation without stride. | |
7788 | 3. Array [EXPR : EXPR : EXPR] -- Array notation with stride. | |
7789 | ||
7790 | For 1, we just handle it just like a normal array expression. | |
7791 | For 2 and 3 we handle it like we handle array notations. The | |
7792 | idx value we have above becomes the initial/start index. | |
7793 | */ | |
b72271b9 | 7794 | if (flag_cilkplus |
36536d79 BI |
7795 | && c_parser_peek_token (parser)->type == CPP_COLON) |
7796 | expr.value = c_parser_array_notation (expr_loc, parser, idx, | |
7797 | expr.value); | |
7798 | else | |
7799 | { | |
7800 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, | |
7801 | "expected %<]%>"); | |
7802 | expr.value = build_array_ref (op_loc, expr.value, idx); | |
7803 | } | |
7804 | } | |
27bf414c | 7805 | expr.original_code = ERROR_MARK; |
6866c6e8 | 7806 | expr.original_type = NULL; |
27bf414c JM |
7807 | break; |
7808 | case CPP_OPEN_PAREN: | |
7809 | /* Function call. */ | |
7810 | c_parser_consume_token (parser); | |
3a785c97 JJ |
7811 | for (i = 0; i < 3; i++) |
7812 | { | |
7813 | sizeof_arg[i] = NULL_TREE; | |
7814 | sizeof_arg_loc[i] = UNKNOWN_LOCATION; | |
7815 | } | |
b108f48f | 7816 | literal_zero_mask = 0; |
27bf414c | 7817 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) |
bbbbb16a | 7818 | exprlist = NULL; |
27bf414c | 7819 | else |
1a4049e7 | 7820 | exprlist = c_parser_expr_list (parser, true, false, &origtypes, |
81e5eca8 | 7821 | sizeof_arg_loc, sizeof_arg, |
b108f48f | 7822 | &arg_loc, &literal_zero_mask); |
27bf414c JM |
7823 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, |
7824 | "expected %<)%>"); | |
928c19bb | 7825 | orig_expr = expr; |
ebfbbdc5 | 7826 | mark_exp_read (expr.value); |
3a785c97 JJ |
7827 | if (warn_sizeof_pointer_memaccess) |
7828 | sizeof_pointer_memaccess_warning (sizeof_arg_loc, | |
1a4049e7 | 7829 | expr.value, exprlist, |
3a785c97 | 7830 | sizeof_arg, |
1a4049e7 | 7831 | sizeof_ptr_memacc_comptypes); |
b108f48f JJ |
7832 | if (warn_memset_transposed_args |
7833 | && TREE_CODE (expr.value) == FUNCTION_DECL | |
7834 | && DECL_BUILT_IN_CLASS (expr.value) == BUILT_IN_NORMAL | |
7835 | && DECL_FUNCTION_CODE (expr.value) == BUILT_IN_MEMSET | |
7836 | && vec_safe_length (exprlist) == 3 | |
7837 | && integer_zerop ((*exprlist)[2]) | |
7838 | && (literal_zero_mask & (1 << 2)) != 0 | |
7839 | && (!integer_zerop ((*exprlist)[1]) | |
7840 | || (literal_zero_mask & (1 << 1)) == 0)) | |
7841 | warning_at (expr_loc, OPT_Wmemset_transposed_args, | |
7842 | "%<memset%> used with constant zero length parameter; " | |
7843 | "this could be due to transposed parameters"); | |
7844 | ||
8edbfaa6 JJ |
7845 | expr.value |
7846 | = c_build_function_call_vec (expr_loc, arg_loc, expr.value, | |
7847 | exprlist, origtypes); | |
27bf414c | 7848 | expr.original_code = ERROR_MARK; |
928c19bb JM |
7849 | if (TREE_CODE (expr.value) == INTEGER_CST |
7850 | && TREE_CODE (orig_expr.value) == FUNCTION_DECL | |
7851 | && DECL_BUILT_IN_CLASS (orig_expr.value) == BUILT_IN_NORMAL | |
7852 | && DECL_FUNCTION_CODE (orig_expr.value) == BUILT_IN_CONSTANT_P) | |
7853 | expr.original_code = C_MAYBE_CONST_EXPR; | |
6866c6e8 | 7854 | expr.original_type = NULL; |
9771b263 | 7855 | if (exprlist) |
bbbbb16a | 7856 | { |
c166b898 ILT |
7857 | release_tree_vector (exprlist); |
7858 | release_tree_vector (origtypes); | |
bbbbb16a | 7859 | } |
81e5eca8 | 7860 | arg_loc.release (); |
27bf414c JM |
7861 | break; |
7862 | case CPP_DOT: | |
7863 | /* Structure element reference. */ | |
7864 | c_parser_consume_token (parser); | |
c2255bc4 | 7865 | expr = default_function_array_conversion (expr_loc, expr); |
27bf414c JM |
7866 | if (c_parser_next_token_is (parser, CPP_NAME)) |
7867 | ident = c_parser_peek_token (parser)->value; | |
7868 | else | |
7869 | { | |
7870 | c_parser_error (parser, "expected identifier"); | |
7871 | expr.value = error_mark_node; | |
7872 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 7873 | expr.original_type = NULL; |
27bf414c JM |
7874 | return expr; |
7875 | } | |
7876 | c_parser_consume_token (parser); | |
c2255bc4 | 7877 | expr.value = build_component_ref (op_loc, expr.value, ident); |
27bf414c | 7878 | expr.original_code = ERROR_MARK; |
6866c6e8 ILT |
7879 | if (TREE_CODE (expr.value) != COMPONENT_REF) |
7880 | expr.original_type = NULL; | |
7881 | else | |
7882 | { | |
7883 | /* Remember the original type of a bitfield. */ | |
7884 | tree field = TREE_OPERAND (expr.value, 1); | |
7885 | if (TREE_CODE (field) != FIELD_DECL) | |
7886 | expr.original_type = NULL; | |
7887 | else | |
7888 | expr.original_type = DECL_BIT_FIELD_TYPE (field); | |
7889 | } | |
27bf414c JM |
7890 | break; |
7891 | case CPP_DEREF: | |
7892 | /* Structure element reference. */ | |
7893 | c_parser_consume_token (parser); | |
267bac10 | 7894 | expr = convert_lvalue_to_rvalue (expr_loc, expr, true, false); |
27bf414c JM |
7895 | if (c_parser_next_token_is (parser, CPP_NAME)) |
7896 | ident = c_parser_peek_token (parser)->value; | |
7897 | else | |
7898 | { | |
7899 | c_parser_error (parser, "expected identifier"); | |
7900 | expr.value = error_mark_node; | |
7901 | expr.original_code = ERROR_MARK; | |
6866c6e8 | 7902 | expr.original_type = NULL; |
27bf414c JM |
7903 | return expr; |
7904 | } | |
7905 | c_parser_consume_token (parser); | |
c2255bc4 AH |
7906 | expr.value = build_component_ref (op_loc, |
7907 | build_indirect_ref (op_loc, | |
c9f9eb5d | 7908 | expr.value, |
dd865ef6 | 7909 | RO_ARROW), |
6a3799eb | 7910 | ident); |
27bf414c | 7911 | expr.original_code = ERROR_MARK; |
6866c6e8 ILT |
7912 | if (TREE_CODE (expr.value) != COMPONENT_REF) |
7913 | expr.original_type = NULL; | |
7914 | else | |
7915 | { | |
7916 | /* Remember the original type of a bitfield. */ | |
7917 | tree field = TREE_OPERAND (expr.value, 1); | |
7918 | if (TREE_CODE (field) != FIELD_DECL) | |
7919 | expr.original_type = NULL; | |
7920 | else | |
7921 | expr.original_type = DECL_BIT_FIELD_TYPE (field); | |
7922 | } | |
27bf414c JM |
7923 | break; |
7924 | case CPP_PLUS_PLUS: | |
7925 | /* Postincrement. */ | |
7926 | c_parser_consume_token (parser); | |
36536d79 | 7927 | /* If the expressions have array notations, we expand them. */ |
b72271b9 | 7928 | if (flag_cilkplus |
36536d79 BI |
7929 | && TREE_CODE (expr.value) == ARRAY_NOTATION_REF) |
7930 | expr = fix_array_notation_expr (expr_loc, POSTINCREMENT_EXPR, expr); | |
7931 | else | |
7932 | { | |
7933 | expr = default_function_array_read_conversion (expr_loc, expr); | |
7934 | expr.value = build_unary_op (op_loc, | |
7935 | POSTINCREMENT_EXPR, expr.value, 0); | |
7936 | } | |
27bf414c | 7937 | expr.original_code = ERROR_MARK; |
6866c6e8 | 7938 | expr.original_type = NULL; |
27bf414c JM |
7939 | break; |
7940 | case CPP_MINUS_MINUS: | |
7941 | /* Postdecrement. */ | |
7942 | c_parser_consume_token (parser); | |
36536d79 | 7943 | /* If the expressions have array notations, we expand them. */ |
b72271b9 | 7944 | if (flag_cilkplus |
36536d79 BI |
7945 | && TREE_CODE (expr.value) == ARRAY_NOTATION_REF) |
7946 | expr = fix_array_notation_expr (expr_loc, POSTDECREMENT_EXPR, expr); | |
7947 | else | |
7948 | { | |
7949 | expr = default_function_array_read_conversion (expr_loc, expr); | |
7950 | expr.value = build_unary_op (op_loc, | |
7951 | POSTDECREMENT_EXPR, expr.value, 0); | |
7952 | } | |
27bf414c | 7953 | expr.original_code = ERROR_MARK; |
6866c6e8 | 7954 | expr.original_type = NULL; |
27bf414c JM |
7955 | break; |
7956 | default: | |
7957 | return expr; | |
7958 | } | |
7959 | } | |
7960 | } | |
7961 | ||
7962 | /* Parse an expression (C90 6.3.17, C99 6.5.17). | |
7963 | ||
7964 | expression: | |
7965 | assignment-expression | |
7966 | expression , assignment-expression | |
7967 | */ | |
7968 | ||
7969 | static struct c_expr | |
7970 | c_parser_expression (c_parser *parser) | |
7971 | { | |
267bac10 | 7972 | location_t tloc = c_parser_peek_token (parser)->location; |
27bf414c JM |
7973 | struct c_expr expr; |
7974 | expr = c_parser_expr_no_commas (parser, NULL); | |
267bac10 JM |
7975 | if (c_parser_next_token_is (parser, CPP_COMMA)) |
7976 | expr = convert_lvalue_to_rvalue (tloc, expr, true, false); | |
27bf414c JM |
7977 | while (c_parser_next_token_is (parser, CPP_COMMA)) |
7978 | { | |
7979 | struct c_expr next; | |
056928b2 | 7980 | tree lhsval; |
c2255bc4 AH |
7981 | location_t loc = c_parser_peek_token (parser)->location; |
7982 | location_t expr_loc; | |
27bf414c | 7983 | c_parser_consume_token (parser); |
c2255bc4 | 7984 | expr_loc = c_parser_peek_token (parser)->location; |
056928b2 JJ |
7985 | lhsval = expr.value; |
7986 | while (TREE_CODE (lhsval) == COMPOUND_EXPR) | |
7987 | lhsval = TREE_OPERAND (lhsval, 1); | |
7988 | if (DECL_P (lhsval) || handled_component_p (lhsval)) | |
7989 | mark_exp_read (lhsval); | |
27bf414c | 7990 | next = c_parser_expr_no_commas (parser, NULL); |
267bac10 | 7991 | next = convert_lvalue_to_rvalue (expr_loc, next, true, false); |
c2255bc4 | 7992 | expr.value = build_compound_expr (loc, expr.value, next.value); |
27bf414c | 7993 | expr.original_code = COMPOUND_EXPR; |
81f40b79 | 7994 | expr.original_type = next.original_type; |
27bf414c JM |
7995 | } |
7996 | return expr; | |
7997 | } | |
7998 | ||
267bac10 JM |
7999 | /* Parse an expression and convert functions or arrays to pointers and |
8000 | lvalues to rvalues. */ | |
46bdb9cf JM |
8001 | |
8002 | static struct c_expr | |
8003 | c_parser_expression_conv (c_parser *parser) | |
8004 | { | |
8005 | struct c_expr expr; | |
c2255bc4 | 8006 | location_t loc = c_parser_peek_token (parser)->location; |
46bdb9cf | 8007 | expr = c_parser_expression (parser); |
267bac10 | 8008 | expr = convert_lvalue_to_rvalue (loc, expr, true, false); |
46bdb9cf JM |
8009 | return expr; |
8010 | } | |
8011 | ||
b108f48f JJ |
8012 | /* Helper function of c_parser_expr_list. Check if IDXth (0 based) |
8013 | argument is a literal zero alone and if so, set it in literal_zero_mask. */ | |
8014 | ||
8015 | static inline void | |
8016 | c_parser_check_literal_zero (c_parser *parser, unsigned *literal_zero_mask, | |
8017 | unsigned int idx) | |
8018 | { | |
8019 | if (idx >= HOST_BITS_PER_INT) | |
8020 | return; | |
8021 | ||
8022 | c_token *tok = c_parser_peek_token (parser); | |
8023 | switch (tok->type) | |
8024 | { | |
8025 | case CPP_NUMBER: | |
8026 | case CPP_CHAR: | |
8027 | case CPP_WCHAR: | |
8028 | case CPP_CHAR16: | |
8029 | case CPP_CHAR32: | |
8030 | /* If a parameter is literal zero alone, remember it | |
8031 | for -Wmemset-transposed-args warning. */ | |
8032 | if (integer_zerop (tok->value) | |
8033 | && !TREE_OVERFLOW (tok->value) | |
8034 | && (c_parser_peek_2nd_token (parser)->type == CPP_COMMA | |
8035 | || c_parser_peek_2nd_token (parser)->type == CPP_CLOSE_PAREN)) | |
8036 | *literal_zero_mask |= 1U << idx; | |
8037 | default: | |
8038 | break; | |
8039 | } | |
8040 | } | |
8041 | ||
46bdb9cf | 8042 | /* Parse a non-empty list of expressions. If CONVERT_P, convert |
267bac10 | 8043 | functions and arrays to pointers and lvalues to rvalues. If |
81e5eca8 MP |
8044 | FOLD_P, fold the expressions. If LOCATIONS is non-NULL, save the |
8045 | locations of function arguments into this vector. | |
27bf414c JM |
8046 | |
8047 | nonempty-expr-list: | |
8048 | assignment-expression | |
8049 | nonempty-expr-list , assignment-expression | |
8050 | */ | |
8051 | ||
9771b263 | 8052 | static vec<tree, va_gc> * |
bbbbb16a | 8053 | c_parser_expr_list (c_parser *parser, bool convert_p, bool fold_p, |
9771b263 | 8054 | vec<tree, va_gc> **p_orig_types, |
81e5eca8 | 8055 | location_t *sizeof_arg_loc, tree *sizeof_arg, |
b108f48f JJ |
8056 | vec<location_t> *locations, |
8057 | unsigned int *literal_zero_mask) | |
27bf414c | 8058 | { |
9771b263 DN |
8059 | vec<tree, va_gc> *ret; |
8060 | vec<tree, va_gc> *orig_types; | |
27bf414c | 8061 | struct c_expr expr; |
c2255bc4 | 8062 | location_t loc = c_parser_peek_token (parser)->location; |
3a785c97 JJ |
8063 | location_t cur_sizeof_arg_loc = UNKNOWN_LOCATION; |
8064 | unsigned int idx = 0; | |
bbbbb16a | 8065 | |
c166b898 | 8066 | ret = make_tree_vector (); |
bbbbb16a ILT |
8067 | if (p_orig_types == NULL) |
8068 | orig_types = NULL; | |
8069 | else | |
c166b898 | 8070 | orig_types = make_tree_vector (); |
bbbbb16a | 8071 | |
1a4049e7 JJ |
8072 | if (sizeof_arg != NULL |
8073 | && c_parser_next_token_is_keyword (parser, RID_SIZEOF)) | |
3a785c97 | 8074 | cur_sizeof_arg_loc = c_parser_peek_2nd_token (parser)->location; |
b108f48f JJ |
8075 | if (literal_zero_mask) |
8076 | c_parser_check_literal_zero (parser, literal_zero_mask, 0); | |
27bf414c | 8077 | expr = c_parser_expr_no_commas (parser, NULL); |
46bdb9cf | 8078 | if (convert_p) |
267bac10 | 8079 | expr = convert_lvalue_to_rvalue (loc, expr, true, true); |
928c19bb JM |
8080 | if (fold_p) |
8081 | expr.value = c_fully_fold (expr.value, false, NULL); | |
9771b263 DN |
8082 | ret->quick_push (expr.value); |
8083 | if (orig_types) | |
8084 | orig_types->quick_push (expr.original_type); | |
81e5eca8 MP |
8085 | if (locations) |
8086 | locations->safe_push (loc); | |
3a785c97 JJ |
8087 | if (sizeof_arg != NULL |
8088 | && cur_sizeof_arg_loc != UNKNOWN_LOCATION | |
8089 | && expr.original_code == SIZEOF_EXPR) | |
8090 | { | |
8091 | sizeof_arg[0] = c_last_sizeof_arg; | |
8092 | sizeof_arg_loc[0] = cur_sizeof_arg_loc; | |
8093 | } | |
27bf414c JM |
8094 | while (c_parser_next_token_is (parser, CPP_COMMA)) |
8095 | { | |
8096 | c_parser_consume_token (parser); | |
c2255bc4 | 8097 | loc = c_parser_peek_token (parser)->location; |
1a4049e7 JJ |
8098 | if (sizeof_arg != NULL |
8099 | && c_parser_next_token_is_keyword (parser, RID_SIZEOF)) | |
3a785c97 | 8100 | cur_sizeof_arg_loc = c_parser_peek_2nd_token (parser)->location; |
1a4049e7 | 8101 | else |
3a785c97 | 8102 | cur_sizeof_arg_loc = UNKNOWN_LOCATION; |
b108f48f JJ |
8103 | if (literal_zero_mask) |
8104 | c_parser_check_literal_zero (parser, literal_zero_mask, idx + 1); | |
27bf414c | 8105 | expr = c_parser_expr_no_commas (parser, NULL); |
46bdb9cf | 8106 | if (convert_p) |
267bac10 | 8107 | expr = convert_lvalue_to_rvalue (loc, expr, true, true); |
928c19bb JM |
8108 | if (fold_p) |
8109 | expr.value = c_fully_fold (expr.value, false, NULL); | |
9771b263 DN |
8110 | vec_safe_push (ret, expr.value); |
8111 | if (orig_types) | |
8112 | vec_safe_push (orig_types, expr.original_type); | |
81e5eca8 MP |
8113 | if (locations) |
8114 | locations->safe_push (loc); | |
3a785c97 JJ |
8115 | if (++idx < 3 |
8116 | && sizeof_arg != NULL | |
8117 | && cur_sizeof_arg_loc != UNKNOWN_LOCATION | |
1a4049e7 JJ |
8118 | && expr.original_code == SIZEOF_EXPR) |
8119 | { | |
3a785c97 JJ |
8120 | sizeof_arg[idx] = c_last_sizeof_arg; |
8121 | sizeof_arg_loc[idx] = cur_sizeof_arg_loc; | |
1a4049e7 JJ |
8122 | } |
8123 | } | |
9771b263 | 8124 | if (orig_types) |
bbbbb16a | 8125 | *p_orig_types = orig_types; |
27bf414c JM |
8126 | return ret; |
8127 | } | |
27bf414c JM |
8128 | \f |
8129 | /* Parse Objective-C-specific constructs. */ | |
8130 | ||
8131 | /* Parse an objc-class-definition. | |
8132 | ||
8133 | objc-class-definition: | |
8134 | @interface identifier objc-superclass[opt] objc-protocol-refs[opt] | |
8135 | objc-class-instance-variables[opt] objc-methodprotolist @end | |
8136 | @implementation identifier objc-superclass[opt] | |
8137 | objc-class-instance-variables[opt] | |
8138 | @interface identifier ( identifier ) objc-protocol-refs[opt] | |
8139 | objc-methodprotolist @end | |
ec3e9f82 NP |
8140 | @interface identifier ( ) objc-protocol-refs[opt] |
8141 | objc-methodprotolist @end | |
27bf414c JM |
8142 | @implementation identifier ( identifier ) |
8143 | ||
8144 | objc-superclass: | |
8145 | : identifier | |
8146 | ||
8147 | "@interface identifier (" must start "@interface identifier ( | |
8148 | identifier ) ...": objc-methodprotolist in the first production may | |
0fa2e4df | 8149 | not start with a parenthesized identifier as a declarator of a data |
27bf414c JM |
8150 | definition with no declaration specifiers if the objc-superclass, |
8151 | objc-protocol-refs and objc-class-instance-variables are omitted. */ | |
8152 | ||
8153 | static void | |
c165dca7 | 8154 | c_parser_objc_class_definition (c_parser *parser, tree attributes) |
27bf414c JM |
8155 | { |
8156 | bool iface_p; | |
8157 | tree id1; | |
8158 | tree superclass; | |
8159 | if (c_parser_next_token_is_keyword (parser, RID_AT_INTERFACE)) | |
8160 | iface_p = true; | |
8161 | else if (c_parser_next_token_is_keyword (parser, RID_AT_IMPLEMENTATION)) | |
8162 | iface_p = false; | |
8163 | else | |
8164 | gcc_unreachable (); | |
c165dca7 | 8165 | |
27bf414c JM |
8166 | c_parser_consume_token (parser); |
8167 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8168 | { | |
8169 | c_parser_error (parser, "expected identifier"); | |
8170 | return; | |
8171 | } | |
8172 | id1 = c_parser_peek_token (parser)->value; | |
8173 | c_parser_consume_token (parser); | |
8174 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
8175 | { | |
ec3e9f82 | 8176 | /* We have a category or class extension. */ |
27bf414c JM |
8177 | tree id2; |
8178 | tree proto = NULL_TREE; | |
8179 | c_parser_consume_token (parser); | |
8180 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8181 | { | |
ec3e9f82 NP |
8182 | if (iface_p && c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) |
8183 | { | |
8184 | /* We have a class extension. */ | |
8185 | id2 = NULL_TREE; | |
8186 | } | |
8187 | else | |
8188 | { | |
8189 | c_parser_error (parser, "expected identifier or %<)%>"); | |
8190 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
8191 | return; | |
8192 | } | |
8193 | } | |
8194 | else | |
8195 | { | |
8196 | id2 = c_parser_peek_token (parser)->value; | |
8197 | c_parser_consume_token (parser); | |
27bf414c | 8198 | } |
27bf414c JM |
8199 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
8200 | if (!iface_p) | |
8201 | { | |
8202 | objc_start_category_implementation (id1, id2); | |
8203 | return; | |
8204 | } | |
8205 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
8206 | proto = c_parser_objc_protocol_refs (parser); | |
c165dca7 | 8207 | objc_start_category_interface (id1, id2, proto, attributes); |
27bf414c JM |
8208 | c_parser_objc_methodprotolist (parser); |
8209 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
8210 | objc_finish_interface (); | |
8211 | return; | |
8212 | } | |
8213 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
8214 | { | |
8215 | c_parser_consume_token (parser); | |
8216 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8217 | { | |
8218 | c_parser_error (parser, "expected identifier"); | |
8219 | return; | |
8220 | } | |
8221 | superclass = c_parser_peek_token (parser)->value; | |
8222 | c_parser_consume_token (parser); | |
8223 | } | |
8224 | else | |
8225 | superclass = NULL_TREE; | |
8226 | if (iface_p) | |
8227 | { | |
8228 | tree proto = NULL_TREE; | |
8229 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
8230 | proto = c_parser_objc_protocol_refs (parser); | |
c165dca7 | 8231 | objc_start_class_interface (id1, superclass, proto, attributes); |
27bf414c JM |
8232 | } |
8233 | else | |
8234 | objc_start_class_implementation (id1, superclass); | |
8235 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
8236 | c_parser_objc_class_instance_variables (parser); | |
8237 | if (iface_p) | |
8238 | { | |
8239 | objc_continue_interface (); | |
8240 | c_parser_objc_methodprotolist (parser); | |
8241 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
8242 | objc_finish_interface (); | |
8243 | } | |
8244 | else | |
8245 | { | |
8246 | objc_continue_implementation (); | |
8247 | return; | |
8248 | } | |
8249 | } | |
8250 | ||
8251 | /* Parse objc-class-instance-variables. | |
8252 | ||
8253 | objc-class-instance-variables: | |
8254 | { objc-instance-variable-decl-list[opt] } | |
8255 | ||
8256 | objc-instance-variable-decl-list: | |
8257 | objc-visibility-spec | |
8258 | objc-instance-variable-decl ; | |
8259 | ; | |
8260 | objc-instance-variable-decl-list objc-visibility-spec | |
8261 | objc-instance-variable-decl-list objc-instance-variable-decl ; | |
8262 | objc-instance-variable-decl-list ; | |
8263 | ||
8264 | objc-visibility-spec: | |
8265 | @private | |
8266 | @protected | |
8267 | @public | |
8268 | ||
8269 | objc-instance-variable-decl: | |
8270 | struct-declaration | |
8271 | */ | |
8272 | ||
8273 | static void | |
8274 | c_parser_objc_class_instance_variables (c_parser *parser) | |
8275 | { | |
8276 | gcc_assert (c_parser_next_token_is (parser, CPP_OPEN_BRACE)); | |
8277 | c_parser_consume_token (parser); | |
8278 | while (c_parser_next_token_is_not (parser, CPP_EOF)) | |
8279 | { | |
8280 | tree decls; | |
8281 | /* Parse any stray semicolon. */ | |
8282 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
8283 | { | |
c1771a20 | 8284 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
4e26ba90 | 8285 | "extra semicolon"); |
27bf414c JM |
8286 | c_parser_consume_token (parser); |
8287 | continue; | |
8288 | } | |
8289 | /* Stop if at the end of the instance variables. */ | |
8290 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
8291 | { | |
8292 | c_parser_consume_token (parser); | |
8293 | break; | |
8294 | } | |
8295 | /* Parse any objc-visibility-spec. */ | |
49b91f05 | 8296 | if (c_parser_next_token_is_keyword (parser, RID_AT_PRIVATE)) |
27bf414c JM |
8297 | { |
8298 | c_parser_consume_token (parser); | |
c37d8c30 | 8299 | objc_set_visibility (OBJC_IVAR_VIS_PRIVATE); |
27bf414c JM |
8300 | continue; |
8301 | } | |
49b91f05 | 8302 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PROTECTED)) |
27bf414c JM |
8303 | { |
8304 | c_parser_consume_token (parser); | |
c37d8c30 | 8305 | objc_set_visibility (OBJC_IVAR_VIS_PROTECTED); |
27bf414c JM |
8306 | continue; |
8307 | } | |
49b91f05 | 8308 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PUBLIC)) |
27bf414c JM |
8309 | { |
8310 | c_parser_consume_token (parser); | |
c37d8c30 IS |
8311 | objc_set_visibility (OBJC_IVAR_VIS_PUBLIC); |
8312 | continue; | |
8313 | } | |
8314 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PACKAGE)) | |
8315 | { | |
8316 | c_parser_consume_token (parser); | |
8317 | objc_set_visibility (OBJC_IVAR_VIS_PACKAGE); | |
27bf414c JM |
8318 | continue; |
8319 | } | |
bc4071dd RH |
8320 | else if (c_parser_next_token_is (parser, CPP_PRAGMA)) |
8321 | { | |
8322 | c_parser_pragma (parser, pragma_external); | |
8323 | continue; | |
8324 | } | |
8325 | ||
27bf414c JM |
8326 | /* Parse some comma-separated declarations. */ |
8327 | decls = c_parser_struct_declaration (parser); | |
4e26ba90 NP |
8328 | if (decls == NULL) |
8329 | { | |
8330 | /* There is a syntax error. We want to skip the offending | |
8331 | tokens up to the next ';' (included) or '}' | |
8332 | (excluded). */ | |
8333 | ||
8334 | /* First, skip manually a ')' or ']'. This is because they | |
8335 | reduce the nesting level, so c_parser_skip_until_found() | |
8336 | wouldn't be able to skip past them. */ | |
8337 | c_token *token = c_parser_peek_token (parser); | |
8338 | if (token->type == CPP_CLOSE_PAREN || token->type == CPP_CLOSE_SQUARE) | |
8339 | c_parser_consume_token (parser); | |
8340 | ||
8341 | /* Then, do the standard skipping. */ | |
8342 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
8343 | ||
8344 | /* We hopefully recovered. Start normal parsing again. */ | |
8345 | parser->error = false; | |
8346 | continue; | |
8347 | } | |
8348 | else | |
8349 | { | |
8350 | /* Comma-separated instance variables are chained together | |
8351 | in reverse order; add them one by one. */ | |
8352 | tree ivar = nreverse (decls); | |
8353 | for (; ivar; ivar = DECL_CHAIN (ivar)) | |
8354 | objc_add_instance_variable (copy_node (ivar)); | |
8355 | } | |
27bf414c JM |
8356 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
8357 | } | |
8358 | } | |
8359 | ||
8360 | /* Parse an objc-class-declaration. | |
8361 | ||
8362 | objc-class-declaration: | |
8363 | @class identifier-list ; | |
8364 | */ | |
8365 | ||
8366 | static void | |
8367 | c_parser_objc_class_declaration (c_parser *parser) | |
8368 | { | |
49b91f05 | 8369 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_CLASS)); |
27bf414c JM |
8370 | c_parser_consume_token (parser); |
8371 | /* Any identifiers, including those declared as type names, are OK | |
8372 | here. */ | |
8373 | while (true) | |
8374 | { | |
8375 | tree id; | |
8376 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8377 | { | |
8378 | c_parser_error (parser, "expected identifier"); | |
da57d1b9 NP |
8379 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); |
8380 | parser->error = false; | |
8381 | return; | |
27bf414c JM |
8382 | } |
8383 | id = c_parser_peek_token (parser)->value; | |
32dabdaf | 8384 | objc_declare_class (id); |
27bf414c JM |
8385 | c_parser_consume_token (parser); |
8386 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
8387 | c_parser_consume_token (parser); | |
8388 | else | |
8389 | break; | |
8390 | } | |
8391 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
27bf414c JM |
8392 | } |
8393 | ||
8394 | /* Parse an objc-alias-declaration. | |
8395 | ||
8396 | objc-alias-declaration: | |
8397 | @compatibility_alias identifier identifier ; | |
8398 | */ | |
8399 | ||
8400 | static void | |
8401 | c_parser_objc_alias_declaration (c_parser *parser) | |
8402 | { | |
8403 | tree id1, id2; | |
8404 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_ALIAS)); | |
8405 | c_parser_consume_token (parser); | |
8406 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8407 | { | |
8408 | c_parser_error (parser, "expected identifier"); | |
8409 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
8410 | return; | |
8411 | } | |
8412 | id1 = c_parser_peek_token (parser)->value; | |
8413 | c_parser_consume_token (parser); | |
8414 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8415 | { | |
8416 | c_parser_error (parser, "expected identifier"); | |
8417 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
8418 | return; | |
8419 | } | |
8420 | id2 = c_parser_peek_token (parser)->value; | |
8421 | c_parser_consume_token (parser); | |
8422 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
8423 | objc_declare_alias (id1, id2); | |
8424 | } | |
8425 | ||
8426 | /* Parse an objc-protocol-definition. | |
8427 | ||
8428 | objc-protocol-definition: | |
8429 | @protocol identifier objc-protocol-refs[opt] objc-methodprotolist @end | |
8430 | @protocol identifier-list ; | |
8431 | ||
8432 | "@protocol identifier ;" should be resolved as "@protocol | |
8433 | identifier-list ;": objc-methodprotolist may not start with a | |
8434 | semicolon in the first alternative if objc-protocol-refs are | |
8435 | omitted. */ | |
8436 | ||
8437 | static void | |
c165dca7 | 8438 | c_parser_objc_protocol_definition (c_parser *parser, tree attributes) |
27bf414c JM |
8439 | { |
8440 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_PROTOCOL)); | |
c165dca7 | 8441 | |
27bf414c JM |
8442 | c_parser_consume_token (parser); |
8443 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8444 | { | |
8445 | c_parser_error (parser, "expected identifier"); | |
8446 | return; | |
8447 | } | |
8448 | if (c_parser_peek_2nd_token (parser)->type == CPP_COMMA | |
8449 | || c_parser_peek_2nd_token (parser)->type == CPP_SEMICOLON) | |
8450 | { | |
27bf414c JM |
8451 | /* Any identifiers, including those declared as type names, are |
8452 | OK here. */ | |
8453 | while (true) | |
8454 | { | |
8455 | tree id; | |
8456 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8457 | { | |
8458 | c_parser_error (parser, "expected identifier"); | |
8459 | break; | |
8460 | } | |
8461 | id = c_parser_peek_token (parser)->value; | |
c59633d9 | 8462 | objc_declare_protocol (id, attributes); |
27bf414c JM |
8463 | c_parser_consume_token (parser); |
8464 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
8465 | c_parser_consume_token (parser); | |
8466 | else | |
8467 | break; | |
8468 | } | |
8469 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
27bf414c JM |
8470 | } |
8471 | else | |
8472 | { | |
8473 | tree id = c_parser_peek_token (parser)->value; | |
8474 | tree proto = NULL_TREE; | |
8475 | c_parser_consume_token (parser); | |
8476 | if (c_parser_next_token_is (parser, CPP_LESS)) | |
8477 | proto = c_parser_objc_protocol_refs (parser); | |
0bacb8c7 | 8478 | parser->objc_pq_context = true; |
c165dca7 | 8479 | objc_start_protocol (id, proto, attributes); |
27bf414c JM |
8480 | c_parser_objc_methodprotolist (parser); |
8481 | c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>"); | |
0bacb8c7 | 8482 | parser->objc_pq_context = false; |
27bf414c JM |
8483 | objc_finish_interface (); |
8484 | } | |
8485 | } | |
8486 | ||
8487 | /* Parse an objc-method-type. | |
8488 | ||
8489 | objc-method-type: | |
8490 | + | |
8491 | - | |
27bf414c | 8492 | |
249a82c4 NP |
8493 | Return true if it is a class method (+) and false if it is |
8494 | an instance method (-). | |
8495 | */ | |
8496 | static inline bool | |
27bf414c JM |
8497 | c_parser_objc_method_type (c_parser *parser) |
8498 | { | |
8499 | switch (c_parser_peek_token (parser)->type) | |
8500 | { | |
8501 | case CPP_PLUS: | |
8502 | c_parser_consume_token (parser); | |
249a82c4 | 8503 | return true; |
27bf414c JM |
8504 | case CPP_MINUS: |
8505 | c_parser_consume_token (parser); | |
249a82c4 | 8506 | return false; |
27bf414c JM |
8507 | default: |
8508 | gcc_unreachable (); | |
8509 | } | |
8510 | } | |
8511 | ||
8512 | /* Parse an objc-method-definition. | |
8513 | ||
8514 | objc-method-definition: | |
8515 | objc-method-type objc-method-decl ;[opt] compound-statement | |
8516 | */ | |
8517 | ||
8518 | static void | |
8519 | c_parser_objc_method_definition (c_parser *parser) | |
8520 | { | |
249a82c4 | 8521 | bool is_class_method = c_parser_objc_method_type (parser); |
a04a722b | 8522 | tree decl, attributes = NULL_TREE, expr = NULL_TREE; |
0bacb8c7 | 8523 | parser->objc_pq_context = true; |
a04a722b JM |
8524 | decl = c_parser_objc_method_decl (parser, is_class_method, &attributes, |
8525 | &expr); | |
f7e71da5 IS |
8526 | if (decl == error_mark_node) |
8527 | return; /* Bail here. */ | |
8528 | ||
27bf414c JM |
8529 | if (c_parser_next_token_is (parser, CPP_SEMICOLON)) |
8530 | { | |
8531 | c_parser_consume_token (parser); | |
c1771a20 | 8532 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 8533 | "extra semicolon in method definition specified"); |
27bf414c | 8534 | } |
f7e71da5 | 8535 | |
8f078c08 AP |
8536 | if (!c_parser_next_token_is (parser, CPP_OPEN_BRACE)) |
8537 | { | |
8538 | c_parser_error (parser, "expected %<{%>"); | |
8539 | return; | |
8540 | } | |
f7e71da5 | 8541 | |
0bacb8c7 | 8542 | parser->objc_pq_context = false; |
a04a722b | 8543 | if (objc_start_method_definition (is_class_method, decl, attributes, expr)) |
45547c7f NP |
8544 | { |
8545 | add_stmt (c_parser_compound_statement (parser)); | |
8546 | objc_finish_method_definition (current_function_decl); | |
8547 | } | |
8548 | else | |
8549 | { | |
8550 | /* This code is executed when we find a method definition | |
a26d8862 NP |
8551 | outside of an @implementation context (or invalid for other |
8552 | reasons). Parse the method (to keep going) but do not emit | |
8553 | any code. | |
45547c7f NP |
8554 | */ |
8555 | c_parser_compound_statement (parser); | |
8556 | } | |
27bf414c JM |
8557 | } |
8558 | ||
8559 | /* Parse an objc-methodprotolist. | |
8560 | ||
8561 | objc-methodprotolist: | |
8562 | empty | |
8563 | objc-methodprotolist objc-methodproto | |
8564 | objc-methodprotolist declaration | |
8565 | objc-methodprotolist ; | |
92902b1b IS |
8566 | @optional |
8567 | @required | |
27bf414c JM |
8568 | |
8569 | The declaration is a data definition, which may be missing | |
8570 | declaration specifiers under the same rules and diagnostics as | |
8571 | other data definitions outside functions, and the stray semicolon | |
8572 | is diagnosed the same way as a stray semicolon outside a | |
8573 | function. */ | |
8574 | ||
8575 | static void | |
8576 | c_parser_objc_methodprotolist (c_parser *parser) | |
8577 | { | |
8578 | while (true) | |
8579 | { | |
8580 | /* The list is terminated by @end. */ | |
8581 | switch (c_parser_peek_token (parser)->type) | |
8582 | { | |
8583 | case CPP_SEMICOLON: | |
c1771a20 | 8584 | pedwarn (c_parser_peek_token (parser)->location, OPT_Wpedantic, |
509c9d60 | 8585 | "ISO C does not allow extra %<;%> outside of a function"); |
27bf414c JM |
8586 | c_parser_consume_token (parser); |
8587 | break; | |
8588 | case CPP_PLUS: | |
8589 | case CPP_MINUS: | |
8590 | c_parser_objc_methodproto (parser); | |
8591 | break; | |
b9b58168 RH |
8592 | case CPP_PRAGMA: |
8593 | c_parser_pragma (parser, pragma_external); | |
8594 | break; | |
27bf414c JM |
8595 | case CPP_EOF: |
8596 | return; | |
8597 | default: | |
8598 | if (c_parser_next_token_is_keyword (parser, RID_AT_END)) | |
8599 | return; | |
668ea4b1 | 8600 | else if (c_parser_next_token_is_keyword (parser, RID_AT_PROPERTY)) |
f614132b | 8601 | c_parser_objc_at_property_declaration (parser); |
92902b1b IS |
8602 | else if (c_parser_next_token_is_keyword (parser, RID_AT_OPTIONAL)) |
8603 | { | |
8604 | objc_set_method_opt (true); | |
8605 | c_parser_consume_token (parser); | |
8606 | } | |
8607 | else if (c_parser_next_token_is_keyword (parser, RID_AT_REQUIRED)) | |
8608 | { | |
8609 | objc_set_method_opt (false); | |
8610 | c_parser_consume_token (parser); | |
8611 | } | |
8612 | else | |
8613 | c_parser_declaration_or_fndef (parser, false, false, true, | |
acf0174b | 8614 | false, true, NULL, vNULL); |
27bf414c JM |
8615 | break; |
8616 | } | |
8617 | } | |
8618 | } | |
8619 | ||
8620 | /* Parse an objc-methodproto. | |
8621 | ||
8622 | objc-methodproto: | |
8623 | objc-method-type objc-method-decl ; | |
8624 | */ | |
8625 | ||
8626 | static void | |
8627 | c_parser_objc_methodproto (c_parser *parser) | |
8628 | { | |
249a82c4 | 8629 | bool is_class_method = c_parser_objc_method_type (parser); |
f7e71da5 | 8630 | tree decl, attributes = NULL_TREE; |
249a82c4 | 8631 | |
27bf414c | 8632 | /* Remember protocol qualifiers in prototypes. */ |
0bacb8c7 | 8633 | parser->objc_pq_context = true; |
a04a722b JM |
8634 | decl = c_parser_objc_method_decl (parser, is_class_method, &attributes, |
8635 | NULL); | |
f7e71da5 | 8636 | /* Forget protocol qualifiers now. */ |
0bacb8c7 | 8637 | parser->objc_pq_context = false; |
f7e71da5 IS |
8638 | |
8639 | /* Do not allow the presence of attributes to hide an erroneous | |
8640 | method implementation in the interface section. */ | |
8641 | if (!c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
8642 | { | |
8643 | c_parser_error (parser, "expected %<;%>"); | |
8644 | return; | |
8645 | } | |
8646 | ||
8647 | if (decl != error_mark_node) | |
249a82c4 | 8648 | objc_add_method_declaration (is_class_method, decl, attributes); |
f7e71da5 | 8649 | |
27bf414c JM |
8650 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); |
8651 | } | |
8652 | ||
f7e71da5 IS |
8653 | /* If we are at a position that method attributes may be present, check that |
8654 | there are not any parsed already (a syntax error) and then collect any | |
8655 | specified at the current location. Finally, if new attributes were present, | |
8656 | check that the next token is legal ( ';' for decls and '{' for defs). */ | |
8657 | ||
8658 | static bool | |
8659 | c_parser_objc_maybe_method_attributes (c_parser* parser, tree* attributes) | |
8660 | { | |
8661 | bool bad = false; | |
8662 | if (*attributes) | |
8663 | { | |
8664 | c_parser_error (parser, | |
8665 | "method attributes must be specified at the end only"); | |
8666 | *attributes = NULL_TREE; | |
8667 | bad = true; | |
8668 | } | |
8669 | ||
8670 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
8671 | *attributes = c_parser_attributes (parser); | |
8672 | ||
8673 | /* If there were no attributes here, just report any earlier error. */ | |
8674 | if (*attributes == NULL_TREE || bad) | |
8675 | return bad; | |
8676 | ||
8677 | /* If the attributes are followed by a ; or {, then just report any earlier | |
8678 | error. */ | |
8679 | if (c_parser_next_token_is (parser, CPP_SEMICOLON) | |
8680 | || c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
8681 | return bad; | |
8682 | ||
8683 | /* We've got attributes, but not at the end. */ | |
8684 | c_parser_error (parser, | |
8685 | "expected %<;%> or %<{%> after method attribute definition"); | |
8686 | return true; | |
8687 | } | |
8688 | ||
27bf414c JM |
8689 | /* Parse an objc-method-decl. |
8690 | ||
8691 | objc-method-decl: | |
8692 | ( objc-type-name ) objc-selector | |
8693 | objc-selector | |
8694 | ( objc-type-name ) objc-keyword-selector objc-optparmlist | |
8695 | objc-keyword-selector objc-optparmlist | |
f7e71da5 | 8696 | attributes |
27bf414c JM |
8697 | |
8698 | objc-keyword-selector: | |
8699 | objc-keyword-decl | |
8700 | objc-keyword-selector objc-keyword-decl | |
8701 | ||
8702 | objc-keyword-decl: | |
8703 | objc-selector : ( objc-type-name ) identifier | |
8704 | objc-selector : identifier | |
8705 | : ( objc-type-name ) identifier | |
8706 | : identifier | |
8707 | ||
8708 | objc-optparmlist: | |
8709 | objc-optparms objc-optellipsis | |
8710 | ||
8711 | objc-optparms: | |
8712 | empty | |
8713 | objc-opt-parms , parameter-declaration | |
8714 | ||
8715 | objc-optellipsis: | |
8716 | empty | |
8717 | , ... | |
8718 | */ | |
8719 | ||
8720 | static tree | |
a04a722b JM |
8721 | c_parser_objc_method_decl (c_parser *parser, bool is_class_method, |
8722 | tree *attributes, tree *expr) | |
27bf414c JM |
8723 | { |
8724 | tree type = NULL_TREE; | |
8725 | tree sel; | |
8726 | tree parms = NULL_TREE; | |
dbb74365 | 8727 | bool ellipsis = false; |
f7e71da5 | 8728 | bool attr_err = false; |
dbb74365 | 8729 | |
f7e71da5 | 8730 | *attributes = NULL_TREE; |
27bf414c JM |
8731 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) |
8732 | { | |
8733 | c_parser_consume_token (parser); | |
8734 | type = c_parser_objc_type_name (parser); | |
8735 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8736 | } | |
8737 | sel = c_parser_objc_selector (parser); | |
8738 | /* If there is no selector, or a colon follows, we have an | |
8739 | objc-keyword-selector. If there is a selector, and a colon does | |
8740 | not follow, that selector ends the objc-method-decl. */ | |
8741 | if (!sel || c_parser_next_token_is (parser, CPP_COLON)) | |
8742 | { | |
8743 | tree tsel = sel; | |
8744 | tree list = NULL_TREE; | |
27bf414c JM |
8745 | while (true) |
8746 | { | |
8747 | tree atype = NULL_TREE, id, keyworddecl; | |
f7e71da5 | 8748 | tree param_attr = NULL_TREE; |
27bf414c JM |
8749 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) |
8750 | break; | |
8751 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
8752 | { | |
8753 | c_parser_consume_token (parser); | |
8754 | atype = c_parser_objc_type_name (parser); | |
8755 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
8756 | "expected %<)%>"); | |
8757 | } | |
f7e71da5 IS |
8758 | /* New ObjC allows attributes on method parameters. */ |
8759 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
8760 | param_attr = c_parser_attributes (parser); | |
27bf414c JM |
8761 | if (c_parser_next_token_is_not (parser, CPP_NAME)) |
8762 | { | |
8763 | c_parser_error (parser, "expected identifier"); | |
8764 | return error_mark_node; | |
8765 | } | |
8766 | id = c_parser_peek_token (parser)->value; | |
8767 | c_parser_consume_token (parser); | |
f7e71da5 | 8768 | keyworddecl = objc_build_keyword_decl (tsel, atype, id, param_attr); |
27bf414c JM |
8769 | list = chainon (list, keyworddecl); |
8770 | tsel = c_parser_objc_selector (parser); | |
8771 | if (!tsel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
8772 | break; | |
8773 | } | |
f7e71da5 IS |
8774 | |
8775 | attr_err |= c_parser_objc_maybe_method_attributes (parser, attributes) ; | |
8776 | ||
27bf414c JM |
8777 | /* Parse the optional parameter list. Optional Objective-C |
8778 | method parameters follow the C syntax, and may include '...' | |
8779 | to denote a variable number of arguments. */ | |
8780 | parms = make_node (TREE_LIST); | |
27bf414c JM |
8781 | while (c_parser_next_token_is (parser, CPP_COMMA)) |
8782 | { | |
8783 | struct c_parm *parm; | |
8784 | c_parser_consume_token (parser); | |
8785 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
8786 | { | |
8787 | ellipsis = true; | |
8788 | c_parser_consume_token (parser); | |
f7e71da5 IS |
8789 | attr_err |= c_parser_objc_maybe_method_attributes |
8790 | (parser, attributes) ; | |
27bf414c JM |
8791 | break; |
8792 | } | |
8793 | parm = c_parser_parameter_declaration (parser, NULL_TREE); | |
8794 | if (parm == NULL) | |
8795 | break; | |
8796 | parms = chainon (parms, | |
a04a722b | 8797 | build_tree_list (NULL_TREE, grokparm (parm, expr))); |
27bf414c | 8798 | } |
27bf414c JM |
8799 | sel = list; |
8800 | } | |
f7e71da5 IS |
8801 | else |
8802 | attr_err |= c_parser_objc_maybe_method_attributes (parser, attributes) ; | |
8803 | ||
8804 | if (sel == NULL) | |
8805 | { | |
8806 | c_parser_error (parser, "objective-c method declaration is expected"); | |
8807 | return error_mark_node; | |
8808 | } | |
8809 | ||
8810 | if (attr_err) | |
8811 | return error_mark_node; | |
8812 | ||
249a82c4 | 8813 | return objc_build_method_signature (is_class_method, type, sel, parms, ellipsis); |
27bf414c JM |
8814 | } |
8815 | ||
8816 | /* Parse an objc-type-name. | |
8817 | ||
8818 | objc-type-name: | |
8819 | objc-type-qualifiers[opt] type-name | |
8820 | objc-type-qualifiers[opt] | |
8821 | ||
8822 | objc-type-qualifiers: | |
8823 | objc-type-qualifier | |
8824 | objc-type-qualifiers objc-type-qualifier | |
8825 | ||
8826 | objc-type-qualifier: one of | |
8827 | in out inout bycopy byref oneway | |
8828 | */ | |
8829 | ||
8830 | static tree | |
8831 | c_parser_objc_type_name (c_parser *parser) | |
8832 | { | |
8833 | tree quals = NULL_TREE; | |
d75d71e0 | 8834 | struct c_type_name *type_name = NULL; |
27bf414c JM |
8835 | tree type = NULL_TREE; |
8836 | while (true) | |
8837 | { | |
8838 | c_token *token = c_parser_peek_token (parser); | |
8839 | if (token->type == CPP_KEYWORD | |
8840 | && (token->keyword == RID_IN | |
8841 | || token->keyword == RID_OUT | |
8842 | || token->keyword == RID_INOUT | |
8843 | || token->keyword == RID_BYCOPY | |
8844 | || token->keyword == RID_BYREF | |
8845 | || token->keyword == RID_ONEWAY)) | |
8846 | { | |
71fc71d8 | 8847 | quals = chainon (build_tree_list (NULL_TREE, token->value), quals); |
27bf414c JM |
8848 | c_parser_consume_token (parser); |
8849 | } | |
8850 | else | |
8851 | break; | |
8852 | } | |
29ce73cb | 8853 | if (c_parser_next_tokens_start_typename (parser, cla_prefer_type)) |
d75d71e0 ILT |
8854 | type_name = c_parser_type_name (parser); |
8855 | if (type_name) | |
928c19bb | 8856 | type = groktypename (type_name, NULL, NULL); |
046608a3 NP |
8857 | |
8858 | /* If the type is unknown, and error has already been produced and | |
8859 | we need to recover from the error. In that case, use NULL_TREE | |
8860 | for the type, as if no type had been specified; this will use the | |
8861 | default type ('id') which is good for error recovery. */ | |
8862 | if (type == error_mark_node) | |
8863 | type = NULL_TREE; | |
8864 | ||
27bf414c JM |
8865 | return build_tree_list (quals, type); |
8866 | } | |
8867 | ||
8868 | /* Parse objc-protocol-refs. | |
8869 | ||
8870 | objc-protocol-refs: | |
8871 | < identifier-list > | |
8872 | */ | |
8873 | ||
8874 | static tree | |
8875 | c_parser_objc_protocol_refs (c_parser *parser) | |
8876 | { | |
8877 | tree list = NULL_TREE; | |
8878 | gcc_assert (c_parser_next_token_is (parser, CPP_LESS)); | |
8879 | c_parser_consume_token (parser); | |
8880 | /* Any identifiers, including those declared as type names, are OK | |
8881 | here. */ | |
8882 | while (true) | |
8883 | { | |
8884 | tree id; | |
8885 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
8886 | { | |
8887 | c_parser_error (parser, "expected identifier"); | |
8888 | break; | |
8889 | } | |
8890 | id = c_parser_peek_token (parser)->value; | |
8891 | list = chainon (list, build_tree_list (NULL_TREE, id)); | |
8892 | c_parser_consume_token (parser); | |
8893 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
8894 | c_parser_consume_token (parser); | |
8895 | else | |
8896 | break; | |
8897 | } | |
8898 | c_parser_require (parser, CPP_GREATER, "expected %<>%>"); | |
8899 | return list; | |
8900 | } | |
8901 | ||
437c2322 | 8902 | /* Parse an objc-try-catch-finally-statement. |
27bf414c | 8903 | |
437c2322 | 8904 | objc-try-catch-finally-statement: |
27bf414c JM |
8905 | @try compound-statement objc-catch-list[opt] |
8906 | @try compound-statement objc-catch-list[opt] @finally compound-statement | |
8907 | ||
8908 | objc-catch-list: | |
437c2322 NP |
8909 | @catch ( objc-catch-parameter-declaration ) compound-statement |
8910 | objc-catch-list @catch ( objc-catch-parameter-declaration ) compound-statement | |
8911 | ||
8912 | objc-catch-parameter-declaration: | |
8913 | parameter-declaration | |
8914 | '...' | |
8915 | ||
8916 | where '...' is to be interpreted literally, that is, it means CPP_ELLIPSIS. | |
8917 | ||
8918 | PS: This function is identical to cp_parser_objc_try_catch_finally_statement | |
8919 | for C++. Keep them in sync. */ | |
27bf414c JM |
8920 | |
8921 | static void | |
437c2322 | 8922 | c_parser_objc_try_catch_finally_statement (c_parser *parser) |
27bf414c | 8923 | { |
437c2322 | 8924 | location_t location; |
27bf414c | 8925 | tree stmt; |
437c2322 | 8926 | |
49b91f05 | 8927 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_TRY)); |
27bf414c | 8928 | c_parser_consume_token (parser); |
437c2322 | 8929 | location = c_parser_peek_token (parser)->location; |
46270f14 | 8930 | objc_maybe_warn_exceptions (location); |
27bf414c | 8931 | stmt = c_parser_compound_statement (parser); |
437c2322 NP |
8932 | objc_begin_try_stmt (location, stmt); |
8933 | ||
49b91f05 | 8934 | while (c_parser_next_token_is_keyword (parser, RID_AT_CATCH)) |
27bf414c JM |
8935 | { |
8936 | struct c_parm *parm; | |
437c2322 NP |
8937 | tree parameter_declaration = error_mark_node; |
8938 | bool seen_open_paren = false; | |
8939 | ||
27bf414c JM |
8940 | c_parser_consume_token (parser); |
8941 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
437c2322 NP |
8942 | seen_open_paren = true; |
8943 | if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) | |
27bf414c | 8944 | { |
437c2322 NP |
8945 | /* We have "@catch (...)" (where the '...' are literally |
8946 | what is in the code). Skip the '...'. | |
8947 | parameter_declaration is set to NULL_TREE, and | |
8948 | objc_being_catch_clauses() knows that that means | |
8949 | '...'. */ | |
8950 | c_parser_consume_token (parser); | |
8951 | parameter_declaration = NULL_TREE; | |
27bf414c | 8952 | } |
437c2322 NP |
8953 | else |
8954 | { | |
8955 | /* We have "@catch (NSException *exception)" or something | |
8956 | like that. Parse the parameter declaration. */ | |
8957 | parm = c_parser_parameter_declaration (parser, NULL_TREE); | |
8958 | if (parm == NULL) | |
8959 | parameter_declaration = error_mark_node; | |
8960 | else | |
a04a722b | 8961 | parameter_declaration = grokparm (parm, NULL); |
437c2322 NP |
8962 | } |
8963 | if (seen_open_paren) | |
8964 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
8965 | else | |
8966 | { | |
8967 | /* If there was no open parenthesis, we are recovering from | |
8968 | an error, and we are trying to figure out what mistake | |
8969 | the user has made. */ | |
8970 | ||
8971 | /* If there is an immediate closing parenthesis, the user | |
8972 | probably forgot the opening one (ie, they typed "@catch | |
8973 | NSException *e)". Parse the closing parenthesis and keep | |
8974 | going. */ | |
8975 | if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) | |
8976 | c_parser_consume_token (parser); | |
8977 | ||
8978 | /* If these is no immediate closing parenthesis, the user | |
8979 | probably doesn't know that parenthesis are required at | |
8980 | all (ie, they typed "@catch NSException *e"). So, just | |
8981 | forget about the closing parenthesis and keep going. */ | |
8982 | } | |
8983 | objc_begin_catch_clause (parameter_declaration); | |
27bf414c JM |
8984 | if (c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) |
8985 | c_parser_compound_statement_nostart (parser); | |
8986 | objc_finish_catch_clause (); | |
8987 | } | |
8988 | if (c_parser_next_token_is_keyword (parser, RID_AT_FINALLY)) | |
8989 | { | |
27bf414c | 8990 | c_parser_consume_token (parser); |
437c2322 NP |
8991 | location = c_parser_peek_token (parser)->location; |
8992 | stmt = c_parser_compound_statement (parser); | |
8993 | objc_build_finally_clause (location, stmt); | |
27bf414c JM |
8994 | } |
8995 | objc_finish_try_stmt (); | |
8996 | } | |
8997 | ||
8998 | /* Parse an objc-synchronized-statement. | |
8999 | ||
9000 | objc-synchronized-statement: | |
9001 | @synchronized ( expression ) compound-statement | |
9002 | */ | |
9003 | ||
9004 | static void | |
9005 | c_parser_objc_synchronized_statement (c_parser *parser) | |
9006 | { | |
9007 | location_t loc; | |
9008 | tree expr, stmt; | |
9009 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_SYNCHRONIZED)); | |
9010 | c_parser_consume_token (parser); | |
9011 | loc = c_parser_peek_token (parser)->location; | |
46270f14 | 9012 | objc_maybe_warn_exceptions (loc); |
27bf414c JM |
9013 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
9014 | { | |
267bac10 JM |
9015 | struct c_expr ce = c_parser_expression (parser); |
9016 | ce = convert_lvalue_to_rvalue (loc, ce, false, false); | |
9017 | expr = ce.value; | |
928c19bb | 9018 | expr = c_fully_fold (expr, false, NULL); |
27bf414c JM |
9019 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
9020 | } | |
9021 | else | |
9022 | expr = error_mark_node; | |
9023 | stmt = c_parser_compound_statement (parser); | |
9024 | objc_build_synchronized (loc, expr, stmt); | |
9025 | } | |
9026 | ||
9027 | /* Parse an objc-selector; return NULL_TREE without an error if the | |
9028 | next token is not an objc-selector. | |
9029 | ||
9030 | objc-selector: | |
9031 | identifier | |
9032 | one of | |
9033 | enum struct union if else while do for switch case default | |
9034 | break continue return goto asm sizeof typeof __alignof | |
9035 | unsigned long const short volatile signed restrict _Complex | |
9036 | in out inout bycopy byref oneway int char float double void _Bool | |
267bac10 | 9037 | _Atomic |
27bf414c JM |
9038 | |
9039 | ??? Why this selection of keywords but not, for example, storage | |
9040 | class specifiers? */ | |
9041 | ||
9042 | static tree | |
9043 | c_parser_objc_selector (c_parser *parser) | |
9044 | { | |
9045 | c_token *token = c_parser_peek_token (parser); | |
9046 | tree value = token->value; | |
9047 | if (token->type == CPP_NAME) | |
9048 | { | |
9049 | c_parser_consume_token (parser); | |
9050 | return value; | |
9051 | } | |
9052 | if (token->type != CPP_KEYWORD) | |
9053 | return NULL_TREE; | |
9054 | switch (token->keyword) | |
9055 | { | |
9056 | case RID_ENUM: | |
9057 | case RID_STRUCT: | |
9058 | case RID_UNION: | |
9059 | case RID_IF: | |
9060 | case RID_ELSE: | |
9061 | case RID_WHILE: | |
9062 | case RID_DO: | |
9063 | case RID_FOR: | |
9064 | case RID_SWITCH: | |
9065 | case RID_CASE: | |
9066 | case RID_DEFAULT: | |
9067 | case RID_BREAK: | |
9068 | case RID_CONTINUE: | |
9069 | case RID_RETURN: | |
9070 | case RID_GOTO: | |
9071 | case RID_ASM: | |
9072 | case RID_SIZEOF: | |
9073 | case RID_TYPEOF: | |
9074 | case RID_ALIGNOF: | |
9075 | case RID_UNSIGNED: | |
9076 | case RID_LONG: | |
9077 | case RID_CONST: | |
9078 | case RID_SHORT: | |
9079 | case RID_VOLATILE: | |
9080 | case RID_SIGNED: | |
9081 | case RID_RESTRICT: | |
9082 | case RID_COMPLEX: | |
9083 | case RID_IN: | |
9084 | case RID_OUT: | |
9085 | case RID_INOUT: | |
9086 | case RID_BYCOPY: | |
9087 | case RID_BYREF: | |
9088 | case RID_ONEWAY: | |
9089 | case RID_INT: | |
9090 | case RID_CHAR: | |
9091 | case RID_FLOAT: | |
9092 | case RID_DOUBLE: | |
9093 | case RID_VOID: | |
9094 | case RID_BOOL: | |
267bac10 | 9095 | case RID_ATOMIC: |
38b7bc7f | 9096 | case RID_AUTO_TYPE: |
78a7c317 DD |
9097 | case RID_INT_N_0: |
9098 | case RID_INT_N_1: | |
9099 | case RID_INT_N_2: | |
9100 | case RID_INT_N_3: | |
27bf414c JM |
9101 | c_parser_consume_token (parser); |
9102 | return value; | |
9103 | default: | |
9104 | return NULL_TREE; | |
9105 | } | |
9106 | } | |
9107 | ||
9108 | /* Parse an objc-selector-arg. | |
9109 | ||
9110 | objc-selector-arg: | |
9111 | objc-selector | |
9112 | objc-keywordname-list | |
9113 | ||
9114 | objc-keywordname-list: | |
9115 | objc-keywordname | |
9116 | objc-keywordname-list objc-keywordname | |
9117 | ||
9118 | objc-keywordname: | |
9119 | objc-selector : | |
9120 | : | |
9121 | */ | |
9122 | ||
9123 | static tree | |
9124 | c_parser_objc_selector_arg (c_parser *parser) | |
9125 | { | |
9126 | tree sel = c_parser_objc_selector (parser); | |
9127 | tree list = NULL_TREE; | |
9128 | if (sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
9129 | return sel; | |
9130 | while (true) | |
9131 | { | |
9132 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
9133 | return list; | |
9134 | list = chainon (list, build_tree_list (sel, NULL_TREE)); | |
9135 | sel = c_parser_objc_selector (parser); | |
9136 | if (!sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
9137 | break; | |
9138 | } | |
9139 | return list; | |
9140 | } | |
9141 | ||
9142 | /* Parse an objc-receiver. | |
9143 | ||
9144 | objc-receiver: | |
9145 | expression | |
9146 | class-name | |
9147 | type-name | |
9148 | */ | |
9149 | ||
9150 | static tree | |
9151 | c_parser_objc_receiver (c_parser *parser) | |
9152 | { | |
267bac10 JM |
9153 | location_t loc = c_parser_peek_token (parser)->location; |
9154 | ||
27bf414c JM |
9155 | if (c_parser_peek_token (parser)->type == CPP_NAME |
9156 | && (c_parser_peek_token (parser)->id_kind == C_ID_TYPENAME | |
9157 | || c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME)) | |
9158 | { | |
9159 | tree id = c_parser_peek_token (parser)->value; | |
9160 | c_parser_consume_token (parser); | |
9161 | return objc_get_class_reference (id); | |
9162 | } | |
267bac10 JM |
9163 | struct c_expr ce = c_parser_expression (parser); |
9164 | ce = convert_lvalue_to_rvalue (loc, ce, false, false); | |
9165 | return c_fully_fold (ce.value, false, NULL); | |
27bf414c JM |
9166 | } |
9167 | ||
9168 | /* Parse objc-message-args. | |
9169 | ||
9170 | objc-message-args: | |
9171 | objc-selector | |
9172 | objc-keywordarg-list | |
9173 | ||
9174 | objc-keywordarg-list: | |
9175 | objc-keywordarg | |
9176 | objc-keywordarg-list objc-keywordarg | |
9177 | ||
9178 | objc-keywordarg: | |
9179 | objc-selector : objc-keywordexpr | |
9180 | : objc-keywordexpr | |
9181 | */ | |
9182 | ||
9183 | static tree | |
9184 | c_parser_objc_message_args (c_parser *parser) | |
9185 | { | |
9186 | tree sel = c_parser_objc_selector (parser); | |
9187 | tree list = NULL_TREE; | |
9188 | if (sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
9189 | return sel; | |
9190 | while (true) | |
9191 | { | |
9192 | tree keywordexpr; | |
9193 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
0a7d7dea | 9194 | return error_mark_node; |
27bf414c JM |
9195 | keywordexpr = c_parser_objc_keywordexpr (parser); |
9196 | list = chainon (list, build_tree_list (sel, keywordexpr)); | |
9197 | sel = c_parser_objc_selector (parser); | |
9198 | if (!sel && c_parser_next_token_is_not (parser, CPP_COLON)) | |
9199 | break; | |
9200 | } | |
9201 | return list; | |
9202 | } | |
9203 | ||
9204 | /* Parse an objc-keywordexpr. | |
9205 | ||
9206 | objc-keywordexpr: | |
9207 | nonempty-expr-list | |
9208 | */ | |
9209 | ||
9210 | static tree | |
9211 | c_parser_objc_keywordexpr (c_parser *parser) | |
9212 | { | |
bbbbb16a | 9213 | tree ret; |
9771b263 | 9214 | vec<tree, va_gc> *expr_list = c_parser_expr_list (parser, true, true, |
81e5eca8 | 9215 | NULL, NULL, NULL, NULL); |
9771b263 | 9216 | if (vec_safe_length (expr_list) == 1) |
27bf414c JM |
9217 | { |
9218 | /* Just return the expression, remove a level of | |
9219 | indirection. */ | |
9771b263 | 9220 | ret = (*expr_list)[0]; |
27bf414c JM |
9221 | } |
9222 | else | |
9223 | { | |
9224 | /* We have a comma expression, we will collapse later. */ | |
c166b898 | 9225 | ret = build_tree_list_vec (expr_list); |
27bf414c | 9226 | } |
c166b898 | 9227 | release_tree_vector (expr_list); |
bbbbb16a | 9228 | return ret; |
27bf414c JM |
9229 | } |
9230 | ||
c165dca7 IS |
9231 | /* A check, needed in several places, that ObjC interface, implementation or |
9232 | method definitions are not prefixed by incorrect items. */ | |
9233 | static bool | |
9234 | c_parser_objc_diagnose_bad_element_prefix (c_parser *parser, | |
9235 | struct c_declspecs *specs) | |
9236 | { | |
9e5b2115 PB |
9237 | if (!specs->declspecs_seen_p || specs->non_sc_seen_p |
9238 | || specs->typespec_kind != ctsk_none) | |
c165dca7 IS |
9239 | { |
9240 | c_parser_error (parser, | |
9241 | "no type or storage class may be specified here,"); | |
9242 | c_parser_skip_to_end_of_block_or_statement (parser); | |
9243 | return true; | |
9244 | } | |
9245 | return false; | |
9246 | } | |
668ea4b1 | 9247 | |
f614132b | 9248 | /* Parse an Objective-C @property declaration. The syntax is: |
668ea4b1 | 9249 | |
f614132b NP |
9250 | objc-property-declaration: |
9251 | '@property' objc-property-attributes[opt] struct-declaration ; | |
668ea4b1 | 9252 | |
f614132b NP |
9253 | objc-property-attributes: |
9254 | '(' objc-property-attribute-list ')' | |
9255 | ||
9256 | objc-property-attribute-list: | |
9257 | objc-property-attribute | |
9258 | objc-property-attribute-list, objc-property-attribute | |
9259 | ||
9260 | objc-property-attribute | |
9261 | 'getter' = identifier | |
9262 | 'setter' = identifier | |
9263 | 'readonly' | |
9264 | 'readwrite' | |
9265 | 'assign' | |
9266 | 'retain' | |
9267 | 'copy' | |
9268 | 'nonatomic' | |
9269 | ||
9270 | For example: | |
9271 | @property NSString *name; | |
9272 | @property (readonly) id object; | |
9273 | @property (retain, nonatomic, getter=getTheName) id name; | |
9274 | @property int a, b, c; | |
9275 | ||
9276 | PS: This function is identical to cp_parser_objc_at_propery_declaration | |
200290f2 | 9277 | for C++. Keep them in sync. */ |
668ea4b1 | 9278 | static void |
f614132b | 9279 | c_parser_objc_at_property_declaration (c_parser *parser) |
668ea4b1 | 9280 | { |
200290f2 NP |
9281 | /* The following variables hold the attributes of the properties as |
9282 | parsed. They are 'false' or 'NULL_TREE' if the attribute was not | |
9283 | seen. When we see an attribute, we set them to 'true' (if they | |
9284 | are boolean properties) or to the identifier (if they have an | |
9285 | argument, ie, for getter and setter). Note that here we only | |
9286 | parse the list of attributes, check the syntax and accumulate the | |
9287 | attributes that we find. objc_add_property_declaration() will | |
9288 | then process the information. */ | |
9289 | bool property_assign = false; | |
9290 | bool property_copy = false; | |
9291 | tree property_getter_ident = NULL_TREE; | |
9292 | bool property_nonatomic = false; | |
9293 | bool property_readonly = false; | |
9294 | bool property_readwrite = false; | |
9295 | bool property_retain = false; | |
9296 | tree property_setter_ident = NULL_TREE; | |
200290f2 NP |
9297 | |
9298 | /* 'properties' is the list of properties that we read. Usually a | |
9299 | single one, but maybe more (eg, in "@property int a, b, c;" there | |
9300 | are three). */ | |
f614132b NP |
9301 | tree properties; |
9302 | location_t loc; | |
200290f2 | 9303 | |
f614132b NP |
9304 | loc = c_parser_peek_token (parser)->location; |
9305 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_PROPERTY)); | |
668ea4b1 | 9306 | |
f614132b | 9307 | c_parser_consume_token (parser); /* Eat '@property'. */ |
668ea4b1 | 9308 | |
f614132b NP |
9309 | /* Parse the optional attribute list... */ |
9310 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
668ea4b1 | 9311 | { |
f614132b NP |
9312 | /* Eat the '(' */ |
9313 | c_parser_consume_token (parser); | |
9314 | ||
9315 | /* Property attribute keywords are valid now. */ | |
9316 | parser->objc_property_attr_context = true; | |
9317 | ||
9318 | while (true) | |
668ea4b1 | 9319 | { |
f614132b NP |
9320 | bool syntax_error = false; |
9321 | c_token *token = c_parser_peek_token (parser); | |
9322 | enum rid keyword; | |
9323 | ||
9324 | if (token->type != CPP_KEYWORD) | |
9325 | { | |
9326 | if (token->type == CPP_CLOSE_PAREN) | |
9327 | c_parser_error (parser, "expected identifier"); | |
9328 | else | |
9329 | { | |
9330 | c_parser_consume_token (parser); | |
9331 | c_parser_error (parser, "unknown property attribute"); | |
9332 | } | |
9333 | break; | |
9334 | } | |
9335 | keyword = token->keyword; | |
200290f2 | 9336 | c_parser_consume_token (parser); |
f614132b NP |
9337 | switch (keyword) |
9338 | { | |
200290f2 | 9339 | case RID_ASSIGN: property_assign = true; break; |
200290f2 NP |
9340 | case RID_COPY: property_copy = true; break; |
9341 | case RID_NONATOMIC: property_nonatomic = true; break; | |
9342 | case RID_READONLY: property_readonly = true; break; | |
9343 | case RID_READWRITE: property_readwrite = true; break; | |
9344 | case RID_RETAIN: property_retain = true; break; | |
9345 | ||
f614132b NP |
9346 | case RID_GETTER: |
9347 | case RID_SETTER: | |
f614132b NP |
9348 | if (c_parser_next_token_is_not (parser, CPP_EQ)) |
9349 | { | |
d853ee42 NP |
9350 | if (keyword == RID_GETTER) |
9351 | c_parser_error (parser, | |
9352 | "missing %<=%> (after %<getter%> attribute)"); | |
9353 | else | |
9354 | c_parser_error (parser, | |
9355 | "missing %<=%> (after %<setter%> attribute)"); | |
f614132b NP |
9356 | syntax_error = true; |
9357 | break; | |
9358 | } | |
9359 | c_parser_consume_token (parser); /* eat the = */ | |
9360 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
9361 | { | |
9362 | c_parser_error (parser, "expected identifier"); | |
9363 | syntax_error = true; | |
9364 | break; | |
9365 | } | |
f614132b NP |
9366 | if (keyword == RID_SETTER) |
9367 | { | |
200290f2 NP |
9368 | if (property_setter_ident != NULL_TREE) |
9369 | c_parser_error (parser, "the %<setter%> attribute may only be specified once"); | |
9370 | else | |
9371 | property_setter_ident = c_parser_peek_token (parser)->value; | |
f614132b | 9372 | c_parser_consume_token (parser); |
200290f2 NP |
9373 | if (c_parser_next_token_is_not (parser, CPP_COLON)) |
9374 | c_parser_error (parser, "setter name must terminate with %<:%>"); | |
9375 | else | |
9376 | c_parser_consume_token (parser); | |
f614132b | 9377 | } |
46a88c12 | 9378 | else |
f614132b | 9379 | { |
200290f2 NP |
9380 | if (property_getter_ident != NULL_TREE) |
9381 | c_parser_error (parser, "the %<getter%> attribute may only be specified once"); | |
9382 | else | |
9383 | property_getter_ident = c_parser_peek_token (parser)->value; | |
f614132b | 9384 | c_parser_consume_token (parser); |
f614132b | 9385 | } |
200290f2 NP |
9386 | break; |
9387 | default: | |
9388 | c_parser_error (parser, "unknown property attribute"); | |
f614132b NP |
9389 | syntax_error = true; |
9390 | break; | |
9391 | } | |
9392 | ||
9393 | if (syntax_error) | |
668ea4b1 | 9394 | break; |
f614132b NP |
9395 | |
9396 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
668ea4b1 | 9397 | c_parser_consume_token (parser); |
f614132b | 9398 | else |
668ea4b1 IS |
9399 | break; |
9400 | } | |
f614132b NP |
9401 | parser->objc_property_attr_context = false; |
9402 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
9403 | } | |
9404 | /* ... and the property declaration(s). */ | |
9405 | properties = c_parser_struct_declaration (parser); | |
668ea4b1 | 9406 | |
f614132b NP |
9407 | if (properties == error_mark_node) |
9408 | { | |
9409 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
9410 | parser->error = false; | |
9411 | return; | |
9412 | } | |
668ea4b1 | 9413 | |
f614132b NP |
9414 | if (properties == NULL_TREE) |
9415 | c_parser_error (parser, "expected identifier"); | |
9416 | else | |
9417 | { | |
9418 | /* Comma-separated properties are chained together in | |
9419 | reverse order; add them one by one. */ | |
9420 | properties = nreverse (properties); | |
9421 | ||
9422 | for (; properties; properties = TREE_CHAIN (properties)) | |
200290f2 NP |
9423 | objc_add_property_declaration (loc, copy_node (properties), |
9424 | property_readonly, property_readwrite, | |
9425 | property_assign, property_retain, | |
9426 | property_copy, property_nonatomic, | |
46a88c12 | 9427 | property_getter_ident, property_setter_ident); |
f614132b | 9428 | } |
668ea4b1 IS |
9429 | |
9430 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
f614132b | 9431 | parser->error = false; |
668ea4b1 IS |
9432 | } |
9433 | ||
da57d1b9 NP |
9434 | /* Parse an Objective-C @synthesize declaration. The syntax is: |
9435 | ||
9436 | objc-synthesize-declaration: | |
9437 | @synthesize objc-synthesize-identifier-list ; | |
9438 | ||
9439 | objc-synthesize-identifier-list: | |
9440 | objc-synthesize-identifier | |
9441 | objc-synthesize-identifier-list, objc-synthesize-identifier | |
9442 | ||
9443 | objc-synthesize-identifier | |
9444 | identifier | |
9445 | identifier = identifier | |
9446 | ||
9447 | For example: | |
9448 | @synthesize MyProperty; | |
9449 | @synthesize OneProperty, AnotherProperty=MyIvar, YetAnotherProperty; | |
9450 | ||
9451 | PS: This function is identical to cp_parser_objc_at_synthesize_declaration | |
9452 | for C++. Keep them in sync. | |
9453 | */ | |
9454 | static void | |
9455 | c_parser_objc_at_synthesize_declaration (c_parser *parser) | |
9456 | { | |
9457 | tree list = NULL_TREE; | |
9458 | location_t loc; | |
9459 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_SYNTHESIZE)); | |
9460 | loc = c_parser_peek_token (parser)->location; | |
9461 | ||
9462 | c_parser_consume_token (parser); | |
9463 | while (true) | |
9464 | { | |
9465 | tree property, ivar; | |
9466 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
9467 | { | |
9468 | c_parser_error (parser, "expected identifier"); | |
9469 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
9470 | /* Once we find the semicolon, we can resume normal parsing. | |
9471 | We have to reset parser->error manually because | |
9472 | c_parser_skip_until_found() won't reset it for us if the | |
9473 | next token is precisely a semicolon. */ | |
9474 | parser->error = false; | |
9475 | return; | |
9476 | } | |
9477 | property = c_parser_peek_token (parser)->value; | |
9478 | c_parser_consume_token (parser); | |
9479 | if (c_parser_next_token_is (parser, CPP_EQ)) | |
9480 | { | |
9481 | c_parser_consume_token (parser); | |
9482 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
9483 | { | |
9484 | c_parser_error (parser, "expected identifier"); | |
9485 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
9486 | parser->error = false; | |
9487 | return; | |
9488 | } | |
9489 | ivar = c_parser_peek_token (parser)->value; | |
9490 | c_parser_consume_token (parser); | |
9491 | } | |
9492 | else | |
9493 | ivar = NULL_TREE; | |
9494 | list = chainon (list, build_tree_list (ivar, property)); | |
9495 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
9496 | c_parser_consume_token (parser); | |
9497 | else | |
9498 | break; | |
9499 | } | |
9500 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
9501 | objc_add_synthesize_declaration (loc, list); | |
9502 | } | |
9503 | ||
9504 | /* Parse an Objective-C @dynamic declaration. The syntax is: | |
9505 | ||
9506 | objc-dynamic-declaration: | |
9507 | @dynamic identifier-list ; | |
9508 | ||
9509 | For example: | |
9510 | @dynamic MyProperty; | |
9511 | @dynamic MyProperty, AnotherProperty; | |
9512 | ||
9513 | PS: This function is identical to cp_parser_objc_at_dynamic_declaration | |
9514 | for C++. Keep them in sync. | |
9515 | */ | |
9516 | static void | |
9517 | c_parser_objc_at_dynamic_declaration (c_parser *parser) | |
9518 | { | |
9519 | tree list = NULL_TREE; | |
9520 | location_t loc; | |
9521 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_DYNAMIC)); | |
9522 | loc = c_parser_peek_token (parser)->location; | |
9523 | ||
9524 | c_parser_consume_token (parser); | |
9525 | while (true) | |
9526 | { | |
9527 | tree property; | |
9528 | if (c_parser_next_token_is_not (parser, CPP_NAME)) | |
9529 | { | |
9530 | c_parser_error (parser, "expected identifier"); | |
9531 | c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL); | |
9532 | parser->error = false; | |
9533 | return; | |
9534 | } | |
9535 | property = c_parser_peek_token (parser)->value; | |
9536 | list = chainon (list, build_tree_list (NULL_TREE, property)); | |
9537 | c_parser_consume_token (parser); | |
9538 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
9539 | c_parser_consume_token (parser); | |
9540 | else | |
9541 | break; | |
9542 | } | |
9543 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
9544 | objc_add_dynamic_declaration (loc, list); | |
9545 | } | |
9546 | ||
27bf414c | 9547 | \f |
953ff289 DN |
9548 | /* Handle pragmas. Some OpenMP pragmas are associated with, and therefore |
9549 | should be considered, statements. ALLOW_STMT is true if we're within | |
9550 | the context of a function and such pragmas are to be allowed. Returns | |
9551 | true if we actually parsed such a pragma. */ | |
27bf414c | 9552 | |
bc4071dd | 9553 | static bool |
953ff289 | 9554 | c_parser_pragma (c_parser *parser, enum pragma_context context) |
bc4071dd RH |
9555 | { |
9556 | unsigned int id; | |
9557 | ||
9558 | id = c_parser_peek_token (parser)->pragma_kind; | |
9559 | gcc_assert (id != PRAGMA_NONE); | |
9560 | ||
9561 | switch (id) | |
9562 | { | |
953ff289 DN |
9563 | case PRAGMA_OMP_BARRIER: |
9564 | if (context != pragma_compound) | |
9565 | { | |
9566 | if (context == pragma_stmt) | |
9567 | c_parser_error (parser, "%<#pragma omp barrier%> may only be " | |
9568 | "used in compound statements"); | |
9569 | goto bad_stmt; | |
9570 | } | |
9571 | c_parser_omp_barrier (parser); | |
9572 | return false; | |
9573 | ||
9574 | case PRAGMA_OMP_FLUSH: | |
9575 | if (context != pragma_compound) | |
9576 | { | |
9577 | if (context == pragma_stmt) | |
9578 | c_parser_error (parser, "%<#pragma omp flush%> may only be " | |
9579 | "used in compound statements"); | |
9580 | goto bad_stmt; | |
9581 | } | |
9582 | c_parser_omp_flush (parser); | |
9583 | return false; | |
9584 | ||
a68ab351 JJ |
9585 | case PRAGMA_OMP_TASKWAIT: |
9586 | if (context != pragma_compound) | |
9587 | { | |
9588 | if (context == pragma_stmt) | |
9589 | c_parser_error (parser, "%<#pragma omp taskwait%> may only be " | |
9590 | "used in compound statements"); | |
9591 | goto bad_stmt; | |
9592 | } | |
9593 | c_parser_omp_taskwait (parser); | |
9594 | return false; | |
9595 | ||
20906c66 JJ |
9596 | case PRAGMA_OMP_TASKYIELD: |
9597 | if (context != pragma_compound) | |
9598 | { | |
9599 | if (context == pragma_stmt) | |
9600 | c_parser_error (parser, "%<#pragma omp taskyield%> may only be " | |
9601 | "used in compound statements"); | |
9602 | goto bad_stmt; | |
9603 | } | |
9604 | c_parser_omp_taskyield (parser); | |
9605 | return false; | |
9606 | ||
acf0174b JJ |
9607 | case PRAGMA_OMP_CANCEL: |
9608 | if (context != pragma_compound) | |
9609 | { | |
9610 | if (context == pragma_stmt) | |
9611 | c_parser_error (parser, "%<#pragma omp cancel%> may only be " | |
9612 | "used in compound statements"); | |
9613 | goto bad_stmt; | |
9614 | } | |
9615 | c_parser_omp_cancel (parser); | |
9616 | return false; | |
9617 | ||
9618 | case PRAGMA_OMP_CANCELLATION_POINT: | |
9619 | if (context != pragma_compound) | |
9620 | { | |
9621 | if (context == pragma_stmt) | |
9622 | c_parser_error (parser, "%<#pragma omp cancellation point%> may " | |
9623 | "only be used in compound statements"); | |
9624 | goto bad_stmt; | |
9625 | } | |
9626 | c_parser_omp_cancellation_point (parser); | |
9627 | return false; | |
9628 | ||
953ff289 DN |
9629 | case PRAGMA_OMP_THREADPRIVATE: |
9630 | c_parser_omp_threadprivate (parser); | |
9631 | return false; | |
9632 | ||
acf0174b JJ |
9633 | case PRAGMA_OMP_TARGET: |
9634 | return c_parser_omp_target (parser, context); | |
9635 | ||
9636 | case PRAGMA_OMP_END_DECLARE_TARGET: | |
9637 | c_parser_omp_end_declare_target (parser); | |
9638 | return false; | |
9639 | ||
953ff289 | 9640 | case PRAGMA_OMP_SECTION: |
3ba09659 AH |
9641 | error_at (c_parser_peek_token (parser)->location, |
9642 | "%<#pragma omp section%> may only be used in " | |
9643 | "%<#pragma omp sections%> construct"); | |
953ff289 DN |
9644 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); |
9645 | return false; | |
9646 | ||
acf0174b JJ |
9647 | case PRAGMA_OMP_DECLARE_REDUCTION: |
9648 | c_parser_omp_declare (parser, context); | |
9649 | return false; | |
8170608b TB |
9650 | case PRAGMA_IVDEP: |
9651 | c_parser_consume_pragma (parser); | |
9652 | c_parser_skip_to_pragma_eol (parser); | |
d4af74d4 TB |
9653 | if (!c_parser_next_token_is_keyword (parser, RID_FOR) |
9654 | && !c_parser_next_token_is_keyword (parser, RID_WHILE) | |
9655 | && !c_parser_next_token_is_keyword (parser, RID_DO)) | |
8170608b | 9656 | { |
d4af74d4 | 9657 | c_parser_error (parser, "for, while or do statement expected"); |
8170608b TB |
9658 | return false; |
9659 | } | |
d4af74d4 TB |
9660 | if (c_parser_next_token_is_keyword (parser, RID_FOR)) |
9661 | c_parser_for_statement (parser, true); | |
9662 | else if (c_parser_next_token_is_keyword (parser, RID_WHILE)) | |
9663 | c_parser_while_statement (parser, true); | |
9664 | else | |
9665 | c_parser_do_statement (parser, true); | |
8170608b | 9666 | return false; |
acf0174b | 9667 | |
bc4071dd RH |
9668 | case PRAGMA_GCC_PCH_PREPROCESS: |
9669 | c_parser_error (parser, "%<#pragma GCC pch_preprocess%> must be first"); | |
9670 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
9671 | return false; | |
9672 | ||
c02065fc AH |
9673 | case PRAGMA_CILK_SIMD: |
9674 | if (!c_parser_cilk_verify_simd (parser, context)) | |
9675 | return false; | |
9676 | c_parser_consume_pragma (parser); | |
9677 | c_parser_cilk_simd (parser); | |
9678 | return false; | |
9a771876 JJ |
9679 | case PRAGMA_CILK_GRAINSIZE: |
9680 | if (!flag_cilkplus) | |
9681 | { | |
9682 | warning (0, "%<#pragma grainsize%> ignored because -fcilkplus is not" | |
9683 | " enabled"); | |
9684 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
9685 | return false; | |
9686 | } | |
9687 | if (context == pragma_external) | |
9688 | { | |
9689 | error_at (c_parser_peek_token (parser)->location, | |
9690 | "%<#pragma grainsize%> must be inside a function"); | |
9691 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
9692 | return false; | |
9693 | } | |
9694 | c_parser_cilk_grainsize (parser); | |
9695 | return false; | |
c02065fc | 9696 | |
bc4071dd | 9697 | default: |
953ff289 DN |
9698 | if (id < PRAGMA_FIRST_EXTERNAL) |
9699 | { | |
acf0174b | 9700 | if (context != pragma_stmt && context != pragma_compound) |
953ff289 DN |
9701 | { |
9702 | bad_stmt: | |
9703 | c_parser_error (parser, "expected declaration specifiers"); | |
9704 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
9705 | return false; | |
9706 | } | |
9707 | c_parser_omp_construct (parser); | |
9708 | return true; | |
9709 | } | |
bc4071dd RH |
9710 | break; |
9711 | } | |
9712 | ||
9713 | c_parser_consume_pragma (parser); | |
9714 | c_invoke_pragma_handler (id); | |
27bf414c | 9715 | |
b8698a0f | 9716 | /* Skip to EOL, but suppress any error message. Those will have been |
bc4071dd RH |
9717 | generated by the handler routine through calling error, as opposed |
9718 | to calling c_parser_error. */ | |
9719 | parser->error = true; | |
9720 | c_parser_skip_to_pragma_eol (parser); | |
9721 | ||
9722 | return false; | |
9723 | } | |
9724 | ||
9725 | /* The interface the pragma parsers have to the lexer. */ | |
9726 | ||
9727 | enum cpp_ttype | |
9728 | pragma_lex (tree *value) | |
9729 | { | |
9730 | c_token *tok = c_parser_peek_token (the_parser); | |
9731 | enum cpp_ttype ret = tok->type; | |
9732 | ||
9733 | *value = tok->value; | |
9734 | if (ret == CPP_PRAGMA_EOL || ret == CPP_EOF) | |
9735 | ret = CPP_EOF; | |
9736 | else | |
9737 | { | |
9738 | if (ret == CPP_KEYWORD) | |
9739 | ret = CPP_NAME; | |
9740 | c_parser_consume_token (the_parser); | |
9741 | } | |
9742 | ||
9743 | return ret; | |
9744 | } | |
9745 | ||
9746 | static void | |
9747 | c_parser_pragma_pch_preprocess (c_parser *parser) | |
9748 | { | |
9749 | tree name = NULL; | |
9750 | ||
9751 | c_parser_consume_pragma (parser); | |
9752 | if (c_parser_next_token_is (parser, CPP_STRING)) | |
9753 | { | |
9754 | name = c_parser_peek_token (parser)->value; | |
9755 | c_parser_consume_token (parser); | |
9756 | } | |
9757 | else | |
9758 | c_parser_error (parser, "expected string literal"); | |
9759 | c_parser_skip_to_pragma_eol (parser); | |
9760 | ||
9761 | if (name) | |
9762 | c_common_pch_pragma (parse_in, TREE_STRING_POINTER (name)); | |
9763 | } | |
953ff289 | 9764 | \f |
acf0174b | 9765 | /* OpenMP 2.5 / 3.0 / 3.1 / 4.0 parsing routines. */ |
953ff289 DN |
9766 | |
9767 | /* Returns name of the next clause. | |
9768 | If the clause is not recognized PRAGMA_OMP_CLAUSE_NONE is returned and | |
9769 | the token is not consumed. Otherwise appropriate pragma_omp_clause is | |
9770 | returned and the token is consumed. */ | |
9771 | ||
9772 | static pragma_omp_clause | |
9773 | c_parser_omp_clause_name (c_parser *parser) | |
9774 | { | |
9775 | pragma_omp_clause result = PRAGMA_OMP_CLAUSE_NONE; | |
9776 | ||
9777 | if (c_parser_next_token_is_keyword (parser, RID_IF)) | |
9778 | result = PRAGMA_OMP_CLAUSE_IF; | |
9779 | else if (c_parser_next_token_is_keyword (parser, RID_DEFAULT)) | |
9780 | result = PRAGMA_OMP_CLAUSE_DEFAULT; | |
acf0174b JJ |
9781 | else if (c_parser_next_token_is_keyword (parser, RID_FOR)) |
9782 | result = PRAGMA_OMP_CLAUSE_FOR; | |
953ff289 DN |
9783 | else if (c_parser_next_token_is (parser, CPP_NAME)) |
9784 | { | |
9785 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
9786 | ||
9787 | switch (p[0]) | |
9788 | { | |
acf0174b JJ |
9789 | case 'a': |
9790 | if (!strcmp ("aligned", p)) | |
9791 | result = PRAGMA_OMP_CLAUSE_ALIGNED; | |
9792 | break; | |
953ff289 | 9793 | case 'c': |
a68ab351 JJ |
9794 | if (!strcmp ("collapse", p)) |
9795 | result = PRAGMA_OMP_CLAUSE_COLLAPSE; | |
9796 | else if (!strcmp ("copyin", p)) | |
953ff289 DN |
9797 | result = PRAGMA_OMP_CLAUSE_COPYIN; |
9798 | else if (!strcmp ("copyprivate", p)) | |
9799 | result = PRAGMA_OMP_CLAUSE_COPYPRIVATE; | |
9800 | break; | |
acf0174b JJ |
9801 | case 'd': |
9802 | if (!strcmp ("depend", p)) | |
9803 | result = PRAGMA_OMP_CLAUSE_DEPEND; | |
9804 | else if (!strcmp ("device", p)) | |
9805 | result = PRAGMA_OMP_CLAUSE_DEVICE; | |
9806 | else if (!strcmp ("dist_schedule", p)) | |
9807 | result = PRAGMA_OMP_CLAUSE_DIST_SCHEDULE; | |
9808 | break; | |
953ff289 | 9809 | case 'f': |
20906c66 JJ |
9810 | if (!strcmp ("final", p)) |
9811 | result = PRAGMA_OMP_CLAUSE_FINAL; | |
9812 | else if (!strcmp ("firstprivate", p)) | |
953ff289 | 9813 | result = PRAGMA_OMP_CLAUSE_FIRSTPRIVATE; |
acf0174b JJ |
9814 | else if (!strcmp ("from", p)) |
9815 | result = PRAGMA_OMP_CLAUSE_FROM; | |
9816 | break; | |
9817 | case 'i': | |
9818 | if (!strcmp ("inbranch", p)) | |
9819 | result = PRAGMA_OMP_CLAUSE_INBRANCH; | |
953ff289 DN |
9820 | break; |
9821 | case 'l': | |
9822 | if (!strcmp ("lastprivate", p)) | |
9823 | result = PRAGMA_OMP_CLAUSE_LASTPRIVATE; | |
acf0174b JJ |
9824 | else if (!strcmp ("linear", p)) |
9825 | result = PRAGMA_OMP_CLAUSE_LINEAR; | |
953ff289 | 9826 | break; |
20906c66 | 9827 | case 'm': |
acf0174b JJ |
9828 | if (!strcmp ("map", p)) |
9829 | result = PRAGMA_OMP_CLAUSE_MAP; | |
9830 | else if (!strcmp ("mergeable", p)) | |
20906c66 | 9831 | result = PRAGMA_OMP_CLAUSE_MERGEABLE; |
b72271b9 | 9832 | else if (flag_cilkplus && !strcmp ("mask", p)) |
41958c28 | 9833 | result = PRAGMA_CILK_CLAUSE_MASK; |
20906c66 | 9834 | break; |
953ff289 | 9835 | case 'n': |
acf0174b JJ |
9836 | if (!strcmp ("notinbranch", p)) |
9837 | result = PRAGMA_OMP_CLAUSE_NOTINBRANCH; | |
9838 | else if (!strcmp ("nowait", p)) | |
953ff289 | 9839 | result = PRAGMA_OMP_CLAUSE_NOWAIT; |
acf0174b JJ |
9840 | else if (!strcmp ("num_teams", p)) |
9841 | result = PRAGMA_OMP_CLAUSE_NUM_TEAMS; | |
953ff289 DN |
9842 | else if (!strcmp ("num_threads", p)) |
9843 | result = PRAGMA_OMP_CLAUSE_NUM_THREADS; | |
b72271b9 | 9844 | else if (flag_cilkplus && !strcmp ("nomask", p)) |
41958c28 | 9845 | result = PRAGMA_CILK_CLAUSE_NOMASK; |
953ff289 DN |
9846 | break; |
9847 | case 'o': | |
9848 | if (!strcmp ("ordered", p)) | |
9849 | result = PRAGMA_OMP_CLAUSE_ORDERED; | |
9850 | break; | |
9851 | case 'p': | |
acf0174b JJ |
9852 | if (!strcmp ("parallel", p)) |
9853 | result = PRAGMA_OMP_CLAUSE_PARALLEL; | |
9854 | else if (!strcmp ("private", p)) | |
953ff289 | 9855 | result = PRAGMA_OMP_CLAUSE_PRIVATE; |
acf0174b JJ |
9856 | else if (!strcmp ("proc_bind", p)) |
9857 | result = PRAGMA_OMP_CLAUSE_PROC_BIND; | |
953ff289 DN |
9858 | break; |
9859 | case 'r': | |
9860 | if (!strcmp ("reduction", p)) | |
9861 | result = PRAGMA_OMP_CLAUSE_REDUCTION; | |
9862 | break; | |
9863 | case 's': | |
acf0174b JJ |
9864 | if (!strcmp ("safelen", p)) |
9865 | result = PRAGMA_OMP_CLAUSE_SAFELEN; | |
9866 | else if (!strcmp ("schedule", p)) | |
953ff289 | 9867 | result = PRAGMA_OMP_CLAUSE_SCHEDULE; |
acf0174b JJ |
9868 | else if (!strcmp ("sections", p)) |
9869 | result = PRAGMA_OMP_CLAUSE_SECTIONS; | |
953ff289 DN |
9870 | else if (!strcmp ("shared", p)) |
9871 | result = PRAGMA_OMP_CLAUSE_SHARED; | |
acf0174b JJ |
9872 | else if (!strcmp ("simdlen", p)) |
9873 | result = PRAGMA_OMP_CLAUSE_SIMDLEN; | |
9874 | break; | |
9875 | case 't': | |
9876 | if (!strcmp ("taskgroup", p)) | |
9877 | result = PRAGMA_OMP_CLAUSE_TASKGROUP; | |
9878 | else if (!strcmp ("thread_limit", p)) | |
9879 | result = PRAGMA_OMP_CLAUSE_THREAD_LIMIT; | |
9880 | else if (!strcmp ("to", p)) | |
9881 | result = PRAGMA_OMP_CLAUSE_TO; | |
953ff289 | 9882 | break; |
a68ab351 | 9883 | case 'u': |
acf0174b JJ |
9884 | if (!strcmp ("uniform", p)) |
9885 | result = PRAGMA_OMP_CLAUSE_UNIFORM; | |
9886 | else if (!strcmp ("untied", p)) | |
a68ab351 JJ |
9887 | result = PRAGMA_OMP_CLAUSE_UNTIED; |
9888 | break; | |
41958c28 | 9889 | case 'v': |
b72271b9 | 9890 | if (flag_cilkplus && !strcmp ("vectorlength", p)) |
41958c28 BI |
9891 | result = PRAGMA_CILK_CLAUSE_VECTORLENGTH; |
9892 | break; | |
953ff289 DN |
9893 | } |
9894 | } | |
9895 | ||
9896 | if (result != PRAGMA_OMP_CLAUSE_NONE) | |
9897 | c_parser_consume_token (parser); | |
9898 | ||
9899 | return result; | |
9900 | } | |
9901 | ||
9902 | /* Validate that a clause of the given type does not already exist. */ | |
9903 | ||
9904 | static void | |
d75d71e0 ILT |
9905 | check_no_duplicate_clause (tree clauses, enum omp_clause_code code, |
9906 | const char *name) | |
953ff289 DN |
9907 | { |
9908 | tree c; | |
9909 | ||
9910 | for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
aaf46ef9 | 9911 | if (OMP_CLAUSE_CODE (c) == code) |
953ff289 | 9912 | { |
c2255bc4 AH |
9913 | location_t loc = OMP_CLAUSE_LOCATION (c); |
9914 | error_at (loc, "too many %qs clauses", name); | |
953ff289 DN |
9915 | break; |
9916 | } | |
9917 | } | |
9918 | ||
9919 | /* OpenMP 2.5: | |
9920 | variable-list: | |
9921 | identifier | |
9922 | variable-list , identifier | |
9923 | ||
c2255bc4 AH |
9924 | If KIND is nonzero, create the appropriate node and install the |
9925 | decl in OMP_CLAUSE_DECL and add the node to the head of the list. | |
9926 | If KIND is nonzero, CLAUSE_LOC is the location of the clause. | |
953ff289 DN |
9927 | |
9928 | If KIND is zero, create a TREE_LIST with the decl in TREE_PURPOSE; | |
9929 | return the list created. */ | |
9930 | ||
9931 | static tree | |
c2255bc4 AH |
9932 | c_parser_omp_variable_list (c_parser *parser, |
9933 | location_t clause_loc, | |
acf0174b | 9934 | enum omp_clause_code kind, tree list) |
953ff289 DN |
9935 | { |
9936 | if (c_parser_next_token_is_not (parser, CPP_NAME) | |
9937 | || c_parser_peek_token (parser)->id_kind != C_ID_ID) | |
9938 | c_parser_error (parser, "expected identifier"); | |
9939 | ||
9940 | while (c_parser_next_token_is (parser, CPP_NAME) | |
9941 | && c_parser_peek_token (parser)->id_kind == C_ID_ID) | |
9942 | { | |
9943 | tree t = lookup_name (c_parser_peek_token (parser)->value); | |
9944 | ||
9945 | if (t == NULL_TREE) | |
acf0174b JJ |
9946 | { |
9947 | undeclared_variable (c_parser_peek_token (parser)->location, | |
9948 | c_parser_peek_token (parser)->value); | |
9949 | t = error_mark_node; | |
9950 | } | |
9951 | ||
9952 | c_parser_consume_token (parser); | |
9953 | ||
9954 | if (t == error_mark_node) | |
953ff289 DN |
9955 | ; |
9956 | else if (kind != 0) | |
9957 | { | |
acf0174b JJ |
9958 | switch (kind) |
9959 | { | |
9960 | case OMP_CLAUSE_MAP: | |
9961 | case OMP_CLAUSE_FROM: | |
9962 | case OMP_CLAUSE_TO: | |
9963 | case OMP_CLAUSE_DEPEND: | |
9964 | while (c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
9965 | { | |
9966 | tree low_bound = NULL_TREE, length = NULL_TREE; | |
9967 | ||
9968 | c_parser_consume_token (parser); | |
9969 | if (!c_parser_next_token_is (parser, CPP_COLON)) | |
d90c0a59 JJ |
9970 | { |
9971 | low_bound = c_parser_expression (parser).value; | |
9972 | mark_exp_read (low_bound); | |
9973 | } | |
acf0174b JJ |
9974 | if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) |
9975 | length = integer_one_node; | |
9976 | else | |
9977 | { | |
9978 | /* Look for `:'. */ | |
9979 | if (!c_parser_require (parser, CPP_COLON, | |
9980 | "expected %<:%>")) | |
9981 | { | |
9982 | t = error_mark_node; | |
9983 | break; | |
9984 | } | |
9985 | if (!c_parser_next_token_is (parser, CPP_CLOSE_SQUARE)) | |
d90c0a59 JJ |
9986 | { |
9987 | length = c_parser_expression (parser).value; | |
9988 | mark_exp_read (length); | |
9989 | } | |
acf0174b JJ |
9990 | } |
9991 | /* Look for the closing `]'. */ | |
9992 | if (!c_parser_require (parser, CPP_CLOSE_SQUARE, | |
9993 | "expected %<]%>")) | |
9994 | { | |
9995 | t = error_mark_node; | |
9996 | break; | |
9997 | } | |
9998 | t = tree_cons (low_bound, length, t); | |
9999 | } | |
10000 | break; | |
10001 | default: | |
10002 | break; | |
10003 | } | |
10004 | ||
10005 | if (t != error_mark_node) | |
10006 | { | |
10007 | tree u = build_omp_clause (clause_loc, kind); | |
10008 | OMP_CLAUSE_DECL (u) = t; | |
10009 | OMP_CLAUSE_CHAIN (u) = list; | |
10010 | list = u; | |
10011 | } | |
953ff289 DN |
10012 | } |
10013 | else | |
10014 | list = tree_cons (t, NULL_TREE, list); | |
10015 | ||
953ff289 DN |
10016 | if (c_parser_next_token_is_not (parser, CPP_COMMA)) |
10017 | break; | |
10018 | ||
10019 | c_parser_consume_token (parser); | |
10020 | } | |
10021 | ||
10022 | return list; | |
10023 | } | |
10024 | ||
10025 | /* Similarly, but expect leading and trailing parenthesis. This is a very | |
10026 | common case for omp clauses. */ | |
10027 | ||
10028 | static tree | |
d75d71e0 ILT |
10029 | c_parser_omp_var_list_parens (c_parser *parser, enum omp_clause_code kind, |
10030 | tree list) | |
953ff289 | 10031 | { |
c2255bc4 AH |
10032 | /* The clauses location. */ |
10033 | location_t loc = c_parser_peek_token (parser)->location; | |
10034 | ||
953ff289 DN |
10035 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
10036 | { | |
c2255bc4 | 10037 | list = c_parser_omp_variable_list (parser, loc, kind, list); |
953ff289 DN |
10038 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
10039 | } | |
10040 | return list; | |
10041 | } | |
10042 | ||
a68ab351 JJ |
10043 | /* OpenMP 3.0: |
10044 | collapse ( constant-expression ) */ | |
10045 | ||
10046 | static tree | |
10047 | c_parser_omp_clause_collapse (c_parser *parser, tree list) | |
10048 | { | |
10049 | tree c, num = error_mark_node; | |
10050 | HOST_WIDE_INT n; | |
10051 | location_t loc; | |
10052 | ||
10053 | check_no_duplicate_clause (list, OMP_CLAUSE_COLLAPSE, "collapse"); | |
10054 | ||
10055 | loc = c_parser_peek_token (parser)->location; | |
10056 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10057 | { | |
10058 | num = c_parser_expr_no_commas (parser, NULL).value; | |
10059 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10060 | } | |
10061 | if (num == error_mark_node) | |
10062 | return list; | |
acf0174b JJ |
10063 | mark_exp_read (num); |
10064 | num = c_fully_fold (num, false, NULL); | |
a68ab351 | 10065 | if (!INTEGRAL_TYPE_P (TREE_TYPE (num)) |
9541ffee | 10066 | || !tree_fits_shwi_p (num) |
9439e9a1 | 10067 | || (n = tree_to_shwi (num)) <= 0 |
a68ab351 JJ |
10068 | || (int) n != n) |
10069 | { | |
3ba09659 AH |
10070 | error_at (loc, |
10071 | "collapse argument needs positive constant integer expression"); | |
a68ab351 JJ |
10072 | return list; |
10073 | } | |
c2255bc4 | 10074 | c = build_omp_clause (loc, OMP_CLAUSE_COLLAPSE); |
a68ab351 JJ |
10075 | OMP_CLAUSE_COLLAPSE_EXPR (c) = num; |
10076 | OMP_CLAUSE_CHAIN (c) = list; | |
10077 | return c; | |
10078 | } | |
10079 | ||
953ff289 DN |
10080 | /* OpenMP 2.5: |
10081 | copyin ( variable-list ) */ | |
10082 | ||
10083 | static tree | |
10084 | c_parser_omp_clause_copyin (c_parser *parser, tree list) | |
10085 | { | |
10086 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_COPYIN, list); | |
10087 | } | |
10088 | ||
10089 | /* OpenMP 2.5: | |
10090 | copyprivate ( variable-list ) */ | |
10091 | ||
10092 | static tree | |
10093 | c_parser_omp_clause_copyprivate (c_parser *parser, tree list) | |
10094 | { | |
10095 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_COPYPRIVATE, list); | |
10096 | } | |
10097 | ||
10098 | /* OpenMP 2.5: | |
10099 | default ( shared | none ) */ | |
10100 | ||
10101 | static tree | |
10102 | c_parser_omp_clause_default (c_parser *parser, tree list) | |
10103 | { | |
10104 | enum omp_clause_default_kind kind = OMP_CLAUSE_DEFAULT_UNSPECIFIED; | |
c2255bc4 | 10105 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
10106 | tree c; |
10107 | ||
10108 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10109 | return list; | |
10110 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
10111 | { | |
10112 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
10113 | ||
10114 | switch (p[0]) | |
10115 | { | |
10116 | case 'n': | |
10117 | if (strcmp ("none", p) != 0) | |
10118 | goto invalid_kind; | |
10119 | kind = OMP_CLAUSE_DEFAULT_NONE; | |
10120 | break; | |
10121 | ||
10122 | case 's': | |
10123 | if (strcmp ("shared", p) != 0) | |
10124 | goto invalid_kind; | |
10125 | kind = OMP_CLAUSE_DEFAULT_SHARED; | |
10126 | break; | |
10127 | ||
10128 | default: | |
10129 | goto invalid_kind; | |
10130 | } | |
10131 | ||
10132 | c_parser_consume_token (parser); | |
10133 | } | |
10134 | else | |
10135 | { | |
10136 | invalid_kind: | |
10137 | c_parser_error (parser, "expected %<none%> or %<shared%>"); | |
10138 | } | |
10139 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10140 | ||
10141 | if (kind == OMP_CLAUSE_DEFAULT_UNSPECIFIED) | |
10142 | return list; | |
10143 | ||
10144 | check_no_duplicate_clause (list, OMP_CLAUSE_DEFAULT, "default"); | |
c2255bc4 | 10145 | c = build_omp_clause (loc, OMP_CLAUSE_DEFAULT); |
953ff289 DN |
10146 | OMP_CLAUSE_CHAIN (c) = list; |
10147 | OMP_CLAUSE_DEFAULT_KIND (c) = kind; | |
10148 | ||
10149 | return c; | |
10150 | } | |
10151 | ||
10152 | /* OpenMP 2.5: | |
10153 | firstprivate ( variable-list ) */ | |
10154 | ||
10155 | static tree | |
10156 | c_parser_omp_clause_firstprivate (c_parser *parser, tree list) | |
10157 | { | |
10158 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_FIRSTPRIVATE, list); | |
10159 | } | |
10160 | ||
20906c66 JJ |
10161 | /* OpenMP 3.1: |
10162 | final ( expression ) */ | |
10163 | ||
10164 | static tree | |
10165 | c_parser_omp_clause_final (c_parser *parser, tree list) | |
10166 | { | |
10167 | location_t loc = c_parser_peek_token (parser)->location; | |
10168 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
10169 | { | |
10170 | tree t = c_parser_paren_condition (parser); | |
10171 | tree c; | |
10172 | ||
10173 | check_no_duplicate_clause (list, OMP_CLAUSE_FINAL, "final"); | |
10174 | ||
10175 | c = build_omp_clause (loc, OMP_CLAUSE_FINAL); | |
10176 | OMP_CLAUSE_FINAL_EXPR (c) = t; | |
10177 | OMP_CLAUSE_CHAIN (c) = list; | |
10178 | list = c; | |
10179 | } | |
10180 | else | |
10181 | c_parser_error (parser, "expected %<(%>"); | |
10182 | ||
10183 | return list; | |
10184 | } | |
10185 | ||
953ff289 DN |
10186 | /* OpenMP 2.5: |
10187 | if ( expression ) */ | |
10188 | ||
10189 | static tree | |
10190 | c_parser_omp_clause_if (c_parser *parser, tree list) | |
10191 | { | |
c2255bc4 | 10192 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
10193 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) |
10194 | { | |
10195 | tree t = c_parser_paren_condition (parser); | |
10196 | tree c; | |
10197 | ||
10198 | check_no_duplicate_clause (list, OMP_CLAUSE_IF, "if"); | |
10199 | ||
c2255bc4 | 10200 | c = build_omp_clause (loc, OMP_CLAUSE_IF); |
953ff289 DN |
10201 | OMP_CLAUSE_IF_EXPR (c) = t; |
10202 | OMP_CLAUSE_CHAIN (c) = list; | |
10203 | list = c; | |
10204 | } | |
10205 | else | |
10206 | c_parser_error (parser, "expected %<(%>"); | |
10207 | ||
10208 | return list; | |
10209 | } | |
10210 | ||
10211 | /* OpenMP 2.5: | |
10212 | lastprivate ( variable-list ) */ | |
10213 | ||
10214 | static tree | |
10215 | c_parser_omp_clause_lastprivate (c_parser *parser, tree list) | |
10216 | { | |
10217 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_LASTPRIVATE, list); | |
10218 | } | |
10219 | ||
20906c66 JJ |
10220 | /* OpenMP 3.1: |
10221 | mergeable */ | |
10222 | ||
10223 | static tree | |
10224 | c_parser_omp_clause_mergeable (c_parser *parser ATTRIBUTE_UNUSED, tree list) | |
10225 | { | |
10226 | tree c; | |
10227 | ||
10228 | /* FIXME: Should we allow duplicates? */ | |
10229 | check_no_duplicate_clause (list, OMP_CLAUSE_MERGEABLE, "mergeable"); | |
10230 | ||
10231 | c = build_omp_clause (c_parser_peek_token (parser)->location, | |
10232 | OMP_CLAUSE_MERGEABLE); | |
10233 | OMP_CLAUSE_CHAIN (c) = list; | |
10234 | ||
10235 | return c; | |
10236 | } | |
10237 | ||
953ff289 DN |
10238 | /* OpenMP 2.5: |
10239 | nowait */ | |
10240 | ||
10241 | static tree | |
10242 | c_parser_omp_clause_nowait (c_parser *parser ATTRIBUTE_UNUSED, tree list) | |
10243 | { | |
10244 | tree c; | |
c2255bc4 | 10245 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
10246 | |
10247 | check_no_duplicate_clause (list, OMP_CLAUSE_NOWAIT, "nowait"); | |
10248 | ||
c2255bc4 | 10249 | c = build_omp_clause (loc, OMP_CLAUSE_NOWAIT); |
953ff289 DN |
10250 | OMP_CLAUSE_CHAIN (c) = list; |
10251 | return c; | |
10252 | } | |
10253 | ||
10254 | /* OpenMP 2.5: | |
10255 | num_threads ( expression ) */ | |
10256 | ||
10257 | static tree | |
10258 | c_parser_omp_clause_num_threads (c_parser *parser, tree list) | |
10259 | { | |
c2255bc4 | 10260 | location_t num_threads_loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
10261 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
10262 | { | |
c7412148 | 10263 | location_t expr_loc = c_parser_peek_token (parser)->location; |
953ff289 | 10264 | tree c, t = c_parser_expression (parser).value; |
7d1362bc | 10265 | mark_exp_read (t); |
928c19bb | 10266 | t = c_fully_fold (t, false, NULL); |
953ff289 DN |
10267 | |
10268 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10269 | ||
10270 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
10271 | { | |
10272 | c_parser_error (parser, "expected integer expression"); | |
10273 | return list; | |
10274 | } | |
10275 | ||
10276 | /* Attempt to statically determine when the number isn't positive. */ | |
db3927fb | 10277 | c = fold_build2_loc (expr_loc, LE_EXPR, boolean_type_node, t, |
953ff289 | 10278 | build_int_cst (TREE_TYPE (t), 0)); |
c2255bc4 AH |
10279 | if (CAN_HAVE_LOCATION_P (c)) |
10280 | SET_EXPR_LOCATION (c, expr_loc); | |
953ff289 DN |
10281 | if (c == boolean_true_node) |
10282 | { | |
3ba09659 AH |
10283 | warning_at (expr_loc, 0, |
10284 | "%<num_threads%> value must be positive"); | |
953ff289 DN |
10285 | t = integer_one_node; |
10286 | } | |
10287 | ||
10288 | check_no_duplicate_clause (list, OMP_CLAUSE_NUM_THREADS, "num_threads"); | |
10289 | ||
c2255bc4 | 10290 | c = build_omp_clause (num_threads_loc, OMP_CLAUSE_NUM_THREADS); |
953ff289 DN |
10291 | OMP_CLAUSE_NUM_THREADS_EXPR (c) = t; |
10292 | OMP_CLAUSE_CHAIN (c) = list; | |
10293 | list = c; | |
10294 | } | |
10295 | ||
10296 | return list; | |
10297 | } | |
10298 | ||
10299 | /* OpenMP 2.5: | |
10300 | ordered */ | |
10301 | ||
10302 | static tree | |
c2255bc4 | 10303 | c_parser_omp_clause_ordered (c_parser *parser, tree list) |
953ff289 DN |
10304 | { |
10305 | tree c; | |
10306 | ||
10307 | check_no_duplicate_clause (list, OMP_CLAUSE_ORDERED, "ordered"); | |
10308 | ||
c2255bc4 AH |
10309 | c = build_omp_clause (c_parser_peek_token (parser)->location, |
10310 | OMP_CLAUSE_ORDERED); | |
953ff289 | 10311 | OMP_CLAUSE_CHAIN (c) = list; |
c2255bc4 | 10312 | |
953ff289 DN |
10313 | return c; |
10314 | } | |
10315 | ||
10316 | /* OpenMP 2.5: | |
10317 | private ( variable-list ) */ | |
10318 | ||
10319 | static tree | |
10320 | c_parser_omp_clause_private (c_parser *parser, tree list) | |
10321 | { | |
10322 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_PRIVATE, list); | |
10323 | } | |
10324 | ||
10325 | /* OpenMP 2.5: | |
10326 | reduction ( reduction-operator : variable-list ) | |
10327 | ||
10328 | reduction-operator: | |
20906c66 | 10329 | One of: + * - & ^ | && || |
acf0174b | 10330 | |
20906c66 JJ |
10331 | OpenMP 3.1: |
10332 | ||
10333 | reduction-operator: | |
acf0174b JJ |
10334 | One of: + * - & ^ | && || max min |
10335 | ||
10336 | OpenMP 4.0: | |
10337 | ||
10338 | reduction-operator: | |
10339 | One of: + * - & ^ | && || | |
10340 | identifier */ | |
953ff289 DN |
10341 | |
10342 | static tree | |
10343 | c_parser_omp_clause_reduction (c_parser *parser, tree list) | |
10344 | { | |
c2255bc4 | 10345 | location_t clause_loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
10346 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
10347 | { | |
acf0174b JJ |
10348 | enum tree_code code = ERROR_MARK; |
10349 | tree reduc_id = NULL_TREE; | |
953ff289 DN |
10350 | |
10351 | switch (c_parser_peek_token (parser)->type) | |
10352 | { | |
10353 | case CPP_PLUS: | |
10354 | code = PLUS_EXPR; | |
10355 | break; | |
10356 | case CPP_MULT: | |
10357 | code = MULT_EXPR; | |
10358 | break; | |
10359 | case CPP_MINUS: | |
10360 | code = MINUS_EXPR; | |
10361 | break; | |
10362 | case CPP_AND: | |
10363 | code = BIT_AND_EXPR; | |
10364 | break; | |
10365 | case CPP_XOR: | |
10366 | code = BIT_XOR_EXPR; | |
10367 | break; | |
10368 | case CPP_OR: | |
10369 | code = BIT_IOR_EXPR; | |
10370 | break; | |
10371 | case CPP_AND_AND: | |
10372 | code = TRUTH_ANDIF_EXPR; | |
10373 | break; | |
10374 | case CPP_OR_OR: | |
10375 | code = TRUTH_ORIF_EXPR; | |
10376 | break; | |
20906c66 JJ |
10377 | case CPP_NAME: |
10378 | { | |
10379 | const char *p | |
10380 | = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
10381 | if (strcmp (p, "min") == 0) | |
10382 | { | |
10383 | code = MIN_EXPR; | |
10384 | break; | |
10385 | } | |
10386 | if (strcmp (p, "max") == 0) | |
10387 | { | |
10388 | code = MAX_EXPR; | |
10389 | break; | |
10390 | } | |
acf0174b JJ |
10391 | reduc_id = c_parser_peek_token (parser)->value; |
10392 | break; | |
20906c66 | 10393 | } |
953ff289 DN |
10394 | default: |
10395 | c_parser_error (parser, | |
10396 | "expected %<+%>, %<*%>, %<-%>, %<&%>, " | |
20906c66 | 10397 | "%<^%>, %<|%>, %<&&%>, %<||%>, %<min%> or %<max%>"); |
953ff289 DN |
10398 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, 0); |
10399 | return list; | |
10400 | } | |
10401 | c_parser_consume_token (parser); | |
acf0174b | 10402 | reduc_id = c_omp_reduction_id (code, reduc_id); |
953ff289 DN |
10403 | if (c_parser_require (parser, CPP_COLON, "expected %<:%>")) |
10404 | { | |
10405 | tree nl, c; | |
10406 | ||
c2255bc4 AH |
10407 | nl = c_parser_omp_variable_list (parser, clause_loc, |
10408 | OMP_CLAUSE_REDUCTION, list); | |
953ff289 | 10409 | for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c)) |
acf0174b JJ |
10410 | { |
10411 | tree type = TREE_TYPE (OMP_CLAUSE_DECL (c)); | |
10412 | OMP_CLAUSE_REDUCTION_CODE (c) = code; | |
10413 | if (code == ERROR_MARK | |
10414 | || !(INTEGRAL_TYPE_P (type) | |
10415 | || TREE_CODE (type) == REAL_TYPE | |
10416 | || TREE_CODE (type) == COMPLEX_TYPE)) | |
10417 | OMP_CLAUSE_REDUCTION_PLACEHOLDER (c) | |
10418 | = c_omp_reduction_lookup (reduc_id, | |
10419 | TYPE_MAIN_VARIANT (type)); | |
10420 | } | |
953ff289 DN |
10421 | |
10422 | list = nl; | |
10423 | } | |
10424 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10425 | } | |
10426 | return list; | |
10427 | } | |
10428 | ||
10429 | /* OpenMP 2.5: | |
10430 | schedule ( schedule-kind ) | |
10431 | schedule ( schedule-kind , expression ) | |
10432 | ||
10433 | schedule-kind: | |
a68ab351 | 10434 | static | dynamic | guided | runtime | auto |
953ff289 DN |
10435 | */ |
10436 | ||
10437 | static tree | |
10438 | c_parser_omp_clause_schedule (c_parser *parser, tree list) | |
10439 | { | |
10440 | tree c, t; | |
c2255bc4 | 10441 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 DN |
10442 | |
10443 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10444 | return list; | |
10445 | ||
c2255bc4 | 10446 | c = build_omp_clause (loc, OMP_CLAUSE_SCHEDULE); |
953ff289 DN |
10447 | |
10448 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
10449 | { | |
10450 | tree kind = c_parser_peek_token (parser)->value; | |
10451 | const char *p = IDENTIFIER_POINTER (kind); | |
10452 | ||
10453 | switch (p[0]) | |
10454 | { | |
10455 | case 'd': | |
10456 | if (strcmp ("dynamic", p) != 0) | |
10457 | goto invalid_kind; | |
10458 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_DYNAMIC; | |
10459 | break; | |
10460 | ||
10461 | case 'g': | |
10462 | if (strcmp ("guided", p) != 0) | |
10463 | goto invalid_kind; | |
10464 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_GUIDED; | |
10465 | break; | |
10466 | ||
10467 | case 'r': | |
10468 | if (strcmp ("runtime", p) != 0) | |
10469 | goto invalid_kind; | |
10470 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_RUNTIME; | |
10471 | break; | |
10472 | ||
10473 | default: | |
10474 | goto invalid_kind; | |
10475 | } | |
10476 | } | |
10477 | else if (c_parser_next_token_is_keyword (parser, RID_STATIC)) | |
10478 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_STATIC; | |
a68ab351 JJ |
10479 | else if (c_parser_next_token_is_keyword (parser, RID_AUTO)) |
10480 | OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_AUTO; | |
953ff289 DN |
10481 | else |
10482 | goto invalid_kind; | |
10483 | ||
10484 | c_parser_consume_token (parser); | |
10485 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
10486 | { | |
c7412148 | 10487 | location_t here; |
953ff289 DN |
10488 | c_parser_consume_token (parser); |
10489 | ||
c7412148 | 10490 | here = c_parser_peek_token (parser)->location; |
953ff289 | 10491 | t = c_parser_expr_no_commas (parser, NULL).value; |
7d1362bc | 10492 | mark_exp_read (t); |
928c19bb | 10493 | t = c_fully_fold (t, false, NULL); |
953ff289 DN |
10494 | |
10495 | if (OMP_CLAUSE_SCHEDULE_KIND (c) == OMP_CLAUSE_SCHEDULE_RUNTIME) | |
3ba09659 AH |
10496 | error_at (here, "schedule %<runtime%> does not take " |
10497 | "a %<chunk_size%> parameter"); | |
a68ab351 | 10498 | else if (OMP_CLAUSE_SCHEDULE_KIND (c) == OMP_CLAUSE_SCHEDULE_AUTO) |
3ba09659 AH |
10499 | error_at (here, |
10500 | "schedule %<auto%> does not take " | |
10501 | "a %<chunk_size%> parameter"); | |
953ff289 DN |
10502 | else if (TREE_CODE (TREE_TYPE (t)) == INTEGER_TYPE) |
10503 | OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (c) = t; | |
10504 | else | |
10505 | c_parser_error (parser, "expected integer expression"); | |
10506 | ||
10507 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10508 | } | |
10509 | else | |
10510 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
10511 | "expected %<,%> or %<)%>"); | |
10512 | ||
10513 | check_no_duplicate_clause (list, OMP_CLAUSE_SCHEDULE, "schedule"); | |
10514 | OMP_CLAUSE_CHAIN (c) = list; | |
10515 | return c; | |
10516 | ||
10517 | invalid_kind: | |
10518 | c_parser_error (parser, "invalid schedule kind"); | |
10519 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, 0); | |
10520 | return list; | |
10521 | } | |
10522 | ||
10523 | /* OpenMP 2.5: | |
10524 | shared ( variable-list ) */ | |
10525 | ||
10526 | static tree | |
10527 | c_parser_omp_clause_shared (c_parser *parser, tree list) | |
10528 | { | |
10529 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_SHARED, list); | |
10530 | } | |
10531 | ||
a68ab351 JJ |
10532 | /* OpenMP 3.0: |
10533 | untied */ | |
10534 | ||
10535 | static tree | |
10536 | c_parser_omp_clause_untied (c_parser *parser ATTRIBUTE_UNUSED, tree list) | |
10537 | { | |
10538 | tree c; | |
10539 | ||
10540 | /* FIXME: Should we allow duplicates? */ | |
10541 | check_no_duplicate_clause (list, OMP_CLAUSE_UNTIED, "untied"); | |
10542 | ||
c2255bc4 AH |
10543 | c = build_omp_clause (c_parser_peek_token (parser)->location, |
10544 | OMP_CLAUSE_UNTIED); | |
a68ab351 | 10545 | OMP_CLAUSE_CHAIN (c) = list; |
c2255bc4 | 10546 | |
a68ab351 JJ |
10547 | return c; |
10548 | } | |
10549 | ||
acf0174b JJ |
10550 | /* OpenMP 4.0: |
10551 | inbranch | |
10552 | notinbranch */ | |
953ff289 DN |
10553 | |
10554 | static tree | |
acf0174b JJ |
10555 | c_parser_omp_clause_branch (c_parser *parser ATTRIBUTE_UNUSED, |
10556 | enum omp_clause_code code, tree list) | |
953ff289 | 10557 | { |
acf0174b | 10558 | check_no_duplicate_clause (list, code, omp_clause_code_name[code]); |
953ff289 | 10559 | |
acf0174b JJ |
10560 | tree c = build_omp_clause (c_parser_peek_token (parser)->location, code); |
10561 | OMP_CLAUSE_CHAIN (c) = list; | |
953ff289 | 10562 | |
acf0174b JJ |
10563 | return c; |
10564 | } | |
8085ca15 | 10565 | |
acf0174b JJ |
10566 | /* OpenMP 4.0: |
10567 | parallel | |
10568 | for | |
10569 | sections | |
10570 | taskgroup */ | |
8085ca15 | 10571 | |
acf0174b JJ |
10572 | static tree |
10573 | c_parser_omp_clause_cancelkind (c_parser *parser ATTRIBUTE_UNUSED, | |
10574 | enum omp_clause_code code, tree list) | |
10575 | { | |
10576 | tree c = build_omp_clause (c_parser_peek_token (parser)->location, code); | |
10577 | OMP_CLAUSE_CHAIN (c) = list; | |
10578 | ||
10579 | return c; | |
10580 | } | |
10581 | ||
10582 | /* OpenMP 4.0: | |
10583 | num_teams ( expression ) */ | |
10584 | ||
10585 | static tree | |
10586 | c_parser_omp_clause_num_teams (c_parser *parser, tree list) | |
10587 | { | |
10588 | location_t num_teams_loc = c_parser_peek_token (parser)->location; | |
10589 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10590 | { | |
10591 | location_t expr_loc = c_parser_peek_token (parser)->location; | |
10592 | tree c, t = c_parser_expression (parser).value; | |
10593 | mark_exp_read (t); | |
10594 | t = c_fully_fold (t, false, NULL); | |
10595 | ||
10596 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10597 | ||
10598 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
953ff289 | 10599 | { |
acf0174b JJ |
10600 | c_parser_error (parser, "expected integer expression"); |
10601 | return list; | |
953ff289 DN |
10602 | } |
10603 | ||
acf0174b JJ |
10604 | /* Attempt to statically determine when the number isn't positive. */ |
10605 | c = fold_build2_loc (expr_loc, LE_EXPR, boolean_type_node, t, | |
10606 | build_int_cst (TREE_TYPE (t), 0)); | |
10607 | if (CAN_HAVE_LOCATION_P (c)) | |
10608 | SET_EXPR_LOCATION (c, expr_loc); | |
10609 | if (c == boolean_true_node) | |
953ff289 | 10610 | { |
acf0174b JJ |
10611 | warning_at (expr_loc, 0, "%<num_teams%> value must be positive"); |
10612 | t = integer_one_node; | |
953ff289 | 10613 | } |
953ff289 | 10614 | |
acf0174b | 10615 | check_no_duplicate_clause (list, OMP_CLAUSE_NUM_TEAMS, "num_teams"); |
953ff289 | 10616 | |
acf0174b JJ |
10617 | c = build_omp_clause (num_teams_loc, OMP_CLAUSE_NUM_TEAMS); |
10618 | OMP_CLAUSE_NUM_TEAMS_EXPR (c) = t; | |
10619 | OMP_CLAUSE_CHAIN (c) = list; | |
10620 | list = c; | |
10621 | } | |
953ff289 | 10622 | |
acf0174b JJ |
10623 | return list; |
10624 | } | |
953ff289 | 10625 | |
acf0174b JJ |
10626 | /* OpenMP 4.0: |
10627 | thread_limit ( expression ) */ | |
953ff289 DN |
10628 | |
10629 | static tree | |
acf0174b | 10630 | c_parser_omp_clause_thread_limit (c_parser *parser, tree list) |
953ff289 | 10631 | { |
68c81f24 | 10632 | location_t num_thread_limit_loc = c_parser_peek_token (parser)->location; |
acf0174b JJ |
10633 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
10634 | { | |
10635 | location_t expr_loc = c_parser_peek_token (parser)->location; | |
10636 | tree c, t = c_parser_expression (parser).value; | |
10637 | mark_exp_read (t); | |
10638 | t = c_fully_fold (t, false, NULL); | |
953ff289 | 10639 | |
acf0174b | 10640 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); |
953ff289 | 10641 | |
acf0174b JJ |
10642 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t))) |
10643 | { | |
10644 | c_parser_error (parser, "expected integer expression"); | |
10645 | return list; | |
10646 | } | |
c2255bc4 | 10647 | |
acf0174b JJ |
10648 | /* Attempt to statically determine when the number isn't positive. */ |
10649 | c = fold_build2_loc (expr_loc, LE_EXPR, boolean_type_node, t, | |
10650 | build_int_cst (TREE_TYPE (t), 0)); | |
10651 | if (CAN_HAVE_LOCATION_P (c)) | |
10652 | SET_EXPR_LOCATION (c, expr_loc); | |
10653 | if (c == boolean_true_node) | |
10654 | { | |
10655 | warning_at (expr_loc, 0, "%<thread_limit%> value must be positive"); | |
10656 | t = integer_one_node; | |
10657 | } | |
20906c66 | 10658 | |
acf0174b JJ |
10659 | check_no_duplicate_clause (list, OMP_CLAUSE_THREAD_LIMIT, |
10660 | "thread_limit"); | |
20906c66 | 10661 | |
68c81f24 | 10662 | c = build_omp_clause (num_thread_limit_loc, OMP_CLAUSE_THREAD_LIMIT); |
acf0174b JJ |
10663 | OMP_CLAUSE_THREAD_LIMIT_EXPR (c) = t; |
10664 | OMP_CLAUSE_CHAIN (c) = list; | |
10665 | list = c; | |
10666 | } | |
20906c66 | 10667 | |
acf0174b JJ |
10668 | return list; |
10669 | } | |
20906c66 | 10670 | |
acf0174b JJ |
10671 | /* OpenMP 4.0: |
10672 | aligned ( variable-list ) | |
10673 | aligned ( variable-list : constant-expression ) */ | |
20906c66 | 10674 | |
acf0174b JJ |
10675 | static tree |
10676 | c_parser_omp_clause_aligned (c_parser *parser, tree list) | |
10677 | { | |
10678 | location_t clause_loc = c_parser_peek_token (parser)->location; | |
10679 | tree nl, c; | |
20906c66 | 10680 | |
acf0174b JJ |
10681 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
10682 | return list; | |
20906c66 | 10683 | |
acf0174b JJ |
10684 | nl = c_parser_omp_variable_list (parser, clause_loc, |
10685 | OMP_CLAUSE_ALIGNED, list); | |
20906c66 | 10686 | |
acf0174b JJ |
10687 | if (c_parser_next_token_is (parser, CPP_COLON)) |
10688 | { | |
10689 | c_parser_consume_token (parser); | |
10690 | tree alignment = c_parser_expr_no_commas (parser, NULL).value; | |
10691 | mark_exp_read (alignment); | |
10692 | alignment = c_fully_fold (alignment, false, NULL); | |
10693 | if (!INTEGRAL_TYPE_P (TREE_TYPE (alignment)) | |
10694 | && TREE_CODE (alignment) != INTEGER_CST | |
10695 | && tree_int_cst_sgn (alignment) != 1) | |
10696 | { | |
10697 | error_at (clause_loc, "%<aligned%> clause alignment expression must " | |
10698 | "be positive constant integer expression"); | |
10699 | alignment = NULL_TREE; | |
10700 | } | |
953ff289 | 10701 | |
acf0174b JJ |
10702 | for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c)) |
10703 | OMP_CLAUSE_ALIGNED_ALIGNMENT (c) = alignment; | |
10704 | } | |
10705 | ||
10706 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10707 | return nl; | |
10708 | } | |
10709 | ||
10710 | /* OpenMP 4.0: | |
10711 | linear ( variable-list ) | |
10712 | linear ( variable-list : expression ) */ | |
10713 | ||
10714 | static tree | |
41958c28 | 10715 | c_parser_omp_clause_linear (c_parser *parser, tree list, bool is_cilk_simd_fn) |
953ff289 | 10716 | { |
acf0174b JJ |
10717 | location_t clause_loc = c_parser_peek_token (parser)->location; |
10718 | tree nl, c, step; | |
10719 | ||
10720 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10721 | return list; | |
10722 | ||
10723 | nl = c_parser_omp_variable_list (parser, clause_loc, | |
10724 | OMP_CLAUSE_LINEAR, list); | |
10725 | ||
10726 | if (c_parser_next_token_is (parser, CPP_COLON)) | |
10727 | { | |
10728 | c_parser_consume_token (parser); | |
10729 | step = c_parser_expression (parser).value; | |
10730 | mark_exp_read (step); | |
10731 | step = c_fully_fold (step, false, NULL); | |
41958c28 BI |
10732 | if (is_cilk_simd_fn && TREE_CODE (step) == PARM_DECL) |
10733 | { | |
10734 | sorry ("using parameters for %<linear%> step is not supported yet"); | |
10735 | step = integer_one_node; | |
10736 | } | |
acf0174b JJ |
10737 | if (!INTEGRAL_TYPE_P (TREE_TYPE (step))) |
10738 | { | |
10739 | error_at (clause_loc, "%<linear%> clause step expression must " | |
10740 | "be integral"); | |
10741 | step = integer_one_node; | |
10742 | } | |
10743 | ||
10744 | } | |
10745 | else | |
10746 | step = integer_one_node; | |
10747 | ||
10748 | for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c)) | |
10749 | { | |
10750 | OMP_CLAUSE_LINEAR_STEP (c) = step; | |
10751 | } | |
10752 | ||
10753 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10754 | return nl; | |
10755 | } | |
10756 | ||
10757 | /* OpenMP 4.0: | |
10758 | safelen ( constant-expression ) */ | |
10759 | ||
10760 | static tree | |
10761 | c_parser_omp_clause_safelen (c_parser *parser, tree list) | |
10762 | { | |
10763 | location_t clause_loc = c_parser_peek_token (parser)->location; | |
10764 | tree c, t; | |
10765 | ||
10766 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10767 | return list; | |
10768 | ||
10769 | t = c_parser_expr_no_commas (parser, NULL).value; | |
10770 | mark_exp_read (t); | |
10771 | t = c_fully_fold (t, false, NULL); | |
10772 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t)) | |
10773 | && TREE_CODE (t) != INTEGER_CST | |
10774 | && tree_int_cst_sgn (t) != 1) | |
10775 | { | |
10776 | error_at (clause_loc, "%<safelen%> clause expression must " | |
10777 | "be positive constant integer expression"); | |
10778 | t = NULL_TREE; | |
10779 | } | |
10780 | ||
10781 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10782 | if (t == NULL_TREE || t == error_mark_node) | |
10783 | return list; | |
10784 | ||
10785 | check_no_duplicate_clause (list, OMP_CLAUSE_SAFELEN, "safelen"); | |
10786 | ||
10787 | c = build_omp_clause (clause_loc, OMP_CLAUSE_SAFELEN); | |
10788 | OMP_CLAUSE_SAFELEN_EXPR (c) = t; | |
10789 | OMP_CLAUSE_CHAIN (c) = list; | |
10790 | return c; | |
10791 | } | |
10792 | ||
10793 | /* OpenMP 4.0: | |
10794 | simdlen ( constant-expression ) */ | |
10795 | ||
10796 | static tree | |
10797 | c_parser_omp_clause_simdlen (c_parser *parser, tree list) | |
10798 | { | |
10799 | location_t clause_loc = c_parser_peek_token (parser)->location; | |
10800 | tree c, t; | |
10801 | ||
10802 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10803 | return list; | |
10804 | ||
10805 | t = c_parser_expr_no_commas (parser, NULL).value; | |
10806 | mark_exp_read (t); | |
10807 | t = c_fully_fold (t, false, NULL); | |
10808 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t)) | |
10809 | && TREE_CODE (t) != INTEGER_CST | |
10810 | && tree_int_cst_sgn (t) != 1) | |
10811 | { | |
10812 | error_at (clause_loc, "%<simdlen%> clause expression must " | |
10813 | "be positive constant integer expression"); | |
10814 | t = NULL_TREE; | |
10815 | } | |
10816 | ||
10817 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10818 | if (t == NULL_TREE || t == error_mark_node) | |
10819 | return list; | |
10820 | ||
10821 | check_no_duplicate_clause (list, OMP_CLAUSE_SIMDLEN, "simdlen"); | |
10822 | ||
10823 | c = build_omp_clause (clause_loc, OMP_CLAUSE_SIMDLEN); | |
10824 | OMP_CLAUSE_SIMDLEN_EXPR (c) = t; | |
10825 | OMP_CLAUSE_CHAIN (c) = list; | |
10826 | return c; | |
10827 | } | |
10828 | ||
10829 | /* OpenMP 4.0: | |
10830 | depend ( depend-kind: variable-list ) | |
10831 | ||
10832 | depend-kind: | |
10833 | in | out | inout */ | |
10834 | ||
10835 | static tree | |
10836 | c_parser_omp_clause_depend (c_parser *parser, tree list) | |
10837 | { | |
10838 | location_t clause_loc = c_parser_peek_token (parser)->location; | |
10839 | enum omp_clause_depend_kind kind = OMP_CLAUSE_DEPEND_INOUT; | |
10840 | tree nl, c; | |
10841 | ||
10842 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10843 | return list; | |
953ff289 | 10844 | |
20906c66 JJ |
10845 | if (c_parser_next_token_is (parser, CPP_NAME)) |
10846 | { | |
10847 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
acf0174b JJ |
10848 | if (strcmp ("in", p) == 0) |
10849 | kind = OMP_CLAUSE_DEPEND_IN; | |
10850 | else if (strcmp ("inout", p) == 0) | |
10851 | kind = OMP_CLAUSE_DEPEND_INOUT; | |
10852 | else if (strcmp ("out", p) == 0) | |
10853 | kind = OMP_CLAUSE_DEPEND_OUT; | |
20906c66 | 10854 | else |
acf0174b | 10855 | goto invalid_kind; |
20906c66 | 10856 | } |
acf0174b JJ |
10857 | else |
10858 | goto invalid_kind; | |
953ff289 | 10859 | |
acf0174b JJ |
10860 | c_parser_consume_token (parser); |
10861 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) | |
10862 | goto resync_fail; | |
10863 | ||
10864 | nl = c_parser_omp_variable_list (parser, clause_loc, | |
10865 | OMP_CLAUSE_DEPEND, list); | |
10866 | ||
10867 | for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c)) | |
10868 | OMP_CLAUSE_DEPEND_KIND (c) = kind; | |
10869 | ||
10870 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10871 | return nl; | |
10872 | ||
10873 | invalid_kind: | |
10874 | c_parser_error (parser, "invalid depend kind"); | |
10875 | resync_fail: | |
10876 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10877 | return list; | |
10878 | } | |
10879 | ||
10880 | /* OpenMP 4.0: | |
10881 | map ( map-kind: variable-list ) | |
10882 | map ( variable-list ) | |
10883 | ||
10884 | map-kind: | |
10885 | alloc | to | from | tofrom */ | |
10886 | ||
10887 | static tree | |
10888 | c_parser_omp_clause_map (c_parser *parser, tree list) | |
10889 | { | |
10890 | location_t clause_loc = c_parser_peek_token (parser)->location; | |
10891 | enum omp_clause_map_kind kind = OMP_CLAUSE_MAP_TOFROM; | |
10892 | tree nl, c; | |
10893 | ||
10894 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10895 | return list; | |
10896 | ||
10897 | if (c_parser_next_token_is (parser, CPP_NAME) | |
10898 | && c_parser_peek_2nd_token (parser)->type == CPP_COLON) | |
20906c66 | 10899 | { |
acf0174b JJ |
10900 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); |
10901 | if (strcmp ("alloc", p) == 0) | |
10902 | kind = OMP_CLAUSE_MAP_ALLOC; | |
10903 | else if (strcmp ("to", p) == 0) | |
10904 | kind = OMP_CLAUSE_MAP_TO; | |
10905 | else if (strcmp ("from", p) == 0) | |
10906 | kind = OMP_CLAUSE_MAP_FROM; | |
10907 | else if (strcmp ("tofrom", p) == 0) | |
10908 | kind = OMP_CLAUSE_MAP_TOFROM; | |
20906c66 JJ |
10909 | else |
10910 | { | |
acf0174b JJ |
10911 | c_parser_error (parser, "invalid map kind"); |
10912 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
10913 | "expected %<)%>"); | |
10914 | return list; | |
20906c66 | 10915 | } |
acf0174b JJ |
10916 | c_parser_consume_token (parser); |
10917 | c_parser_consume_token (parser); | |
20906c66 JJ |
10918 | } |
10919 | ||
acf0174b JJ |
10920 | nl = c_parser_omp_variable_list (parser, clause_loc, OMP_CLAUSE_MAP, list); |
10921 | ||
10922 | for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c)) | |
10923 | OMP_CLAUSE_MAP_KIND (c) = kind; | |
10924 | ||
10925 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10926 | return nl; | |
10927 | } | |
10928 | ||
10929 | /* OpenMP 4.0: | |
10930 | device ( expression ) */ | |
10931 | ||
10932 | static tree | |
10933 | c_parser_omp_clause_device (c_parser *parser, tree list) | |
10934 | { | |
10935 | location_t clause_loc = c_parser_peek_token (parser)->location; | |
10936 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
953ff289 | 10937 | { |
acf0174b JJ |
10938 | tree c, t = c_parser_expr_no_commas (parser, NULL).value; |
10939 | mark_exp_read (t); | |
10940 | t = c_fully_fold (t, false, NULL); | |
10941 | ||
10942 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10943 | ||
10944 | if (!INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
20906c66 | 10945 | { |
acf0174b JJ |
10946 | c_parser_error (parser, "expected integer expression"); |
10947 | return list; | |
20906c66 | 10948 | } |
953ff289 | 10949 | |
acf0174b | 10950 | check_no_duplicate_clause (list, OMP_CLAUSE_DEVICE, "device"); |
953ff289 | 10951 | |
acf0174b JJ |
10952 | c = build_omp_clause (clause_loc, OMP_CLAUSE_DEVICE); |
10953 | OMP_CLAUSE_DEVICE_ID (c) = t; | |
10954 | OMP_CLAUSE_CHAIN (c) = list; | |
10955 | list = c; | |
10956 | } | |
953ff289 | 10957 | |
acf0174b JJ |
10958 | return list; |
10959 | } | |
10960 | ||
10961 | /* OpenMP 4.0: | |
10962 | dist_schedule ( static ) | |
10963 | dist_schedule ( static , expression ) */ | |
10964 | ||
10965 | static tree | |
10966 | c_parser_omp_clause_dist_schedule (c_parser *parser, tree list) | |
10967 | { | |
10968 | tree c, t = NULL_TREE; | |
10969 | location_t loc = c_parser_peek_token (parser)->location; | |
10970 | ||
10971 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
10972 | return list; | |
10973 | ||
10974 | if (!c_parser_next_token_is_keyword (parser, RID_STATIC)) | |
10975 | { | |
10976 | c_parser_error (parser, "invalid dist_schedule kind"); | |
10977 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
10978 | "expected %<)%>"); | |
10979 | return list; | |
10980 | } | |
10981 | ||
10982 | c_parser_consume_token (parser); | |
10983 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
10984 | { | |
10985 | c_parser_consume_token (parser); | |
10986 | ||
10987 | t = c_parser_expr_no_commas (parser, NULL).value; | |
10988 | mark_exp_read (t); | |
10989 | t = c_fully_fold (t, false, NULL); | |
10990 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
10991 | } | |
10992 | else | |
10993 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
10994 | "expected %<,%> or %<)%>"); | |
10995 | ||
10996 | check_no_duplicate_clause (list, OMP_CLAUSE_SCHEDULE, "schedule"); | |
10997 | if (t == error_mark_node) | |
10998 | return list; | |
10999 | ||
11000 | c = build_omp_clause (loc, OMP_CLAUSE_DIST_SCHEDULE); | |
11001 | OMP_CLAUSE_DIST_SCHEDULE_CHUNK_EXPR (c) = t; | |
11002 | OMP_CLAUSE_CHAIN (c) = list; | |
11003 | return c; | |
11004 | } | |
11005 | ||
11006 | /* OpenMP 4.0: | |
11007 | proc_bind ( proc-bind-kind ) | |
11008 | ||
11009 | proc-bind-kind: | |
11010 | master | close | spread */ | |
11011 | ||
11012 | static tree | |
11013 | c_parser_omp_clause_proc_bind (c_parser *parser, tree list) | |
11014 | { | |
11015 | location_t clause_loc = c_parser_peek_token (parser)->location; | |
11016 | enum omp_clause_proc_bind_kind kind; | |
11017 | tree c; | |
11018 | ||
11019 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
11020 | return list; | |
11021 | ||
11022 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
11023 | { | |
11024 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
11025 | if (strcmp ("master", p) == 0) | |
11026 | kind = OMP_CLAUSE_PROC_BIND_MASTER; | |
11027 | else if (strcmp ("close", p) == 0) | |
11028 | kind = OMP_CLAUSE_PROC_BIND_CLOSE; | |
11029 | else if (strcmp ("spread", p) == 0) | |
11030 | kind = OMP_CLAUSE_PROC_BIND_SPREAD; | |
11031 | else | |
11032 | goto invalid_kind; | |
11033 | } | |
11034 | else | |
11035 | goto invalid_kind; | |
11036 | ||
11037 | c_parser_consume_token (parser); | |
11038 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
11039 | c = build_omp_clause (clause_loc, OMP_CLAUSE_PROC_BIND); | |
11040 | OMP_CLAUSE_PROC_BIND_KIND (c) = kind; | |
11041 | OMP_CLAUSE_CHAIN (c) = list; | |
11042 | return c; | |
11043 | ||
11044 | invalid_kind: | |
11045 | c_parser_error (parser, "invalid proc_bind kind"); | |
11046 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
11047 | return list; | |
11048 | } | |
11049 | ||
11050 | /* OpenMP 4.0: | |
11051 | to ( variable-list ) */ | |
11052 | ||
11053 | static tree | |
11054 | c_parser_omp_clause_to (c_parser *parser, tree list) | |
11055 | { | |
11056 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_TO, list); | |
11057 | } | |
11058 | ||
11059 | /* OpenMP 4.0: | |
11060 | from ( variable-list ) */ | |
11061 | ||
11062 | static tree | |
11063 | c_parser_omp_clause_from (c_parser *parser, tree list) | |
11064 | { | |
11065 | return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_FROM, list); | |
11066 | } | |
11067 | ||
11068 | /* OpenMP 4.0: | |
11069 | uniform ( variable-list ) */ | |
11070 | ||
11071 | static tree | |
11072 | c_parser_omp_clause_uniform (c_parser *parser, tree list) | |
11073 | { | |
11074 | /* The clauses location. */ | |
11075 | location_t loc = c_parser_peek_token (parser)->location; | |
11076 | ||
11077 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
11078 | { | |
11079 | list = c_parser_omp_variable_list (parser, loc, OMP_CLAUSE_UNIFORM, | |
11080 | list); | |
11081 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
11082 | } | |
11083 | return list; | |
11084 | } | |
11085 | ||
11086 | /* Parse all OpenMP clauses. The set clauses allowed by the directive | |
11087 | is a bitmask in MASK. Return the list of clauses found; the result | |
11088 | of clause default goes in *pdefault. */ | |
11089 | ||
11090 | static tree | |
11091 | c_parser_omp_all_clauses (c_parser *parser, omp_clause_mask mask, | |
11092 | const char *where, bool finish_p = true) | |
11093 | { | |
11094 | tree clauses = NULL; | |
41958c28 | 11095 | bool first = true, cilk_simd_fn = false; |
acf0174b JJ |
11096 | |
11097 | while (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
11098 | { | |
11099 | location_t here; | |
11100 | pragma_omp_clause c_kind; | |
11101 | const char *c_name; | |
11102 | tree prev = clauses; | |
11103 | ||
11104 | if (!first && c_parser_next_token_is (parser, CPP_COMMA)) | |
11105 | c_parser_consume_token (parser); | |
11106 | ||
11107 | here = c_parser_peek_token (parser)->location; | |
11108 | c_kind = c_parser_omp_clause_name (parser); | |
11109 | ||
11110 | switch (c_kind) | |
953ff289 | 11111 | { |
acf0174b JJ |
11112 | case PRAGMA_OMP_CLAUSE_COLLAPSE: |
11113 | clauses = c_parser_omp_clause_collapse (parser, clauses); | |
11114 | c_name = "collapse"; | |
953ff289 | 11115 | break; |
acf0174b JJ |
11116 | case PRAGMA_OMP_CLAUSE_COPYIN: |
11117 | clauses = c_parser_omp_clause_copyin (parser, clauses); | |
11118 | c_name = "copyin"; | |
953ff289 | 11119 | break; |
acf0174b JJ |
11120 | case PRAGMA_OMP_CLAUSE_COPYPRIVATE: |
11121 | clauses = c_parser_omp_clause_copyprivate (parser, clauses); | |
11122 | c_name = "copyprivate"; | |
953ff289 | 11123 | break; |
acf0174b JJ |
11124 | case PRAGMA_OMP_CLAUSE_DEFAULT: |
11125 | clauses = c_parser_omp_clause_default (parser, clauses); | |
11126 | c_name = "default"; | |
953ff289 | 11127 | break; |
acf0174b JJ |
11128 | case PRAGMA_OMP_CLAUSE_FIRSTPRIVATE: |
11129 | clauses = c_parser_omp_clause_firstprivate (parser, clauses); | |
11130 | c_name = "firstprivate"; | |
953ff289 | 11131 | break; |
acf0174b JJ |
11132 | case PRAGMA_OMP_CLAUSE_FINAL: |
11133 | clauses = c_parser_omp_clause_final (parser, clauses); | |
11134 | c_name = "final"; | |
953ff289 | 11135 | break; |
acf0174b JJ |
11136 | case PRAGMA_OMP_CLAUSE_IF: |
11137 | clauses = c_parser_omp_clause_if (parser, clauses); | |
11138 | c_name = "if"; | |
953ff289 | 11139 | break; |
acf0174b JJ |
11140 | case PRAGMA_OMP_CLAUSE_LASTPRIVATE: |
11141 | clauses = c_parser_omp_clause_lastprivate (parser, clauses); | |
11142 | c_name = "lastprivate"; | |
953ff289 | 11143 | break; |
acf0174b JJ |
11144 | case PRAGMA_OMP_CLAUSE_MERGEABLE: |
11145 | clauses = c_parser_omp_clause_mergeable (parser, clauses); | |
11146 | c_name = "mergeable"; | |
953ff289 | 11147 | break; |
acf0174b JJ |
11148 | case PRAGMA_OMP_CLAUSE_NOWAIT: |
11149 | clauses = c_parser_omp_clause_nowait (parser, clauses); | |
11150 | c_name = "nowait"; | |
11151 | break; | |
11152 | case PRAGMA_OMP_CLAUSE_NUM_THREADS: | |
11153 | clauses = c_parser_omp_clause_num_threads (parser, clauses); | |
11154 | c_name = "num_threads"; | |
11155 | break; | |
11156 | case PRAGMA_OMP_CLAUSE_ORDERED: | |
11157 | clauses = c_parser_omp_clause_ordered (parser, clauses); | |
11158 | c_name = "ordered"; | |
11159 | break; | |
11160 | case PRAGMA_OMP_CLAUSE_PRIVATE: | |
11161 | clauses = c_parser_omp_clause_private (parser, clauses); | |
11162 | c_name = "private"; | |
11163 | break; | |
11164 | case PRAGMA_OMP_CLAUSE_REDUCTION: | |
11165 | clauses = c_parser_omp_clause_reduction (parser, clauses); | |
11166 | c_name = "reduction"; | |
11167 | break; | |
11168 | case PRAGMA_OMP_CLAUSE_SCHEDULE: | |
11169 | clauses = c_parser_omp_clause_schedule (parser, clauses); | |
11170 | c_name = "schedule"; | |
11171 | break; | |
11172 | case PRAGMA_OMP_CLAUSE_SHARED: | |
11173 | clauses = c_parser_omp_clause_shared (parser, clauses); | |
11174 | c_name = "shared"; | |
11175 | break; | |
11176 | case PRAGMA_OMP_CLAUSE_UNTIED: | |
11177 | clauses = c_parser_omp_clause_untied (parser, clauses); | |
11178 | c_name = "untied"; | |
11179 | break; | |
11180 | case PRAGMA_OMP_CLAUSE_INBRANCH: | |
41958c28 | 11181 | case PRAGMA_CILK_CLAUSE_MASK: |
acf0174b JJ |
11182 | clauses = c_parser_omp_clause_branch (parser, OMP_CLAUSE_INBRANCH, |
11183 | clauses); | |
11184 | c_name = "inbranch"; | |
11185 | break; | |
11186 | case PRAGMA_OMP_CLAUSE_NOTINBRANCH: | |
41958c28 | 11187 | case PRAGMA_CILK_CLAUSE_NOMASK: |
acf0174b JJ |
11188 | clauses = c_parser_omp_clause_branch (parser, OMP_CLAUSE_NOTINBRANCH, |
11189 | clauses); | |
11190 | c_name = "notinbranch"; | |
11191 | break; | |
11192 | case PRAGMA_OMP_CLAUSE_PARALLEL: | |
11193 | clauses | |
11194 | = c_parser_omp_clause_cancelkind (parser, OMP_CLAUSE_PARALLEL, | |
11195 | clauses); | |
11196 | c_name = "parallel"; | |
11197 | if (!first) | |
20906c66 | 11198 | { |
acf0174b JJ |
11199 | clause_not_first: |
11200 | error_at (here, "%qs must be the first clause of %qs", | |
11201 | c_name, where); | |
11202 | clauses = prev; | |
11203 | } | |
11204 | break; | |
11205 | case PRAGMA_OMP_CLAUSE_FOR: | |
11206 | clauses | |
11207 | = c_parser_omp_clause_cancelkind (parser, OMP_CLAUSE_FOR, | |
11208 | clauses); | |
11209 | c_name = "for"; | |
11210 | if (!first) | |
11211 | goto clause_not_first; | |
11212 | break; | |
11213 | case PRAGMA_OMP_CLAUSE_SECTIONS: | |
11214 | clauses | |
11215 | = c_parser_omp_clause_cancelkind (parser, OMP_CLAUSE_SECTIONS, | |
11216 | clauses); | |
11217 | c_name = "sections"; | |
11218 | if (!first) | |
11219 | goto clause_not_first; | |
11220 | break; | |
11221 | case PRAGMA_OMP_CLAUSE_TASKGROUP: | |
11222 | clauses | |
11223 | = c_parser_omp_clause_cancelkind (parser, OMP_CLAUSE_TASKGROUP, | |
11224 | clauses); | |
11225 | c_name = "taskgroup"; | |
11226 | if (!first) | |
11227 | goto clause_not_first; | |
11228 | break; | |
11229 | case PRAGMA_OMP_CLAUSE_TO: | |
11230 | clauses = c_parser_omp_clause_to (parser, clauses); | |
11231 | c_name = "to"; | |
11232 | break; | |
11233 | case PRAGMA_OMP_CLAUSE_FROM: | |
11234 | clauses = c_parser_omp_clause_from (parser, clauses); | |
11235 | c_name = "from"; | |
11236 | break; | |
11237 | case PRAGMA_OMP_CLAUSE_UNIFORM: | |
11238 | clauses = c_parser_omp_clause_uniform (parser, clauses); | |
11239 | c_name = "uniform"; | |
11240 | break; | |
11241 | case PRAGMA_OMP_CLAUSE_NUM_TEAMS: | |
11242 | clauses = c_parser_omp_clause_num_teams (parser, clauses); | |
11243 | c_name = "num_teams"; | |
11244 | break; | |
11245 | case PRAGMA_OMP_CLAUSE_THREAD_LIMIT: | |
11246 | clauses = c_parser_omp_clause_thread_limit (parser, clauses); | |
11247 | c_name = "thread_limit"; | |
11248 | break; | |
11249 | case PRAGMA_OMP_CLAUSE_ALIGNED: | |
11250 | clauses = c_parser_omp_clause_aligned (parser, clauses); | |
11251 | c_name = "aligned"; | |
11252 | break; | |
41958c28 BI |
11253 | case PRAGMA_OMP_CLAUSE_LINEAR: |
11254 | if (((mask >> PRAGMA_CILK_CLAUSE_VECTORLENGTH) & 1) != 0) | |
11255 | cilk_simd_fn = true; | |
11256 | clauses = c_parser_omp_clause_linear (parser, clauses, cilk_simd_fn); | |
acf0174b JJ |
11257 | c_name = "linear"; |
11258 | break; | |
11259 | case PRAGMA_OMP_CLAUSE_DEPEND: | |
11260 | clauses = c_parser_omp_clause_depend (parser, clauses); | |
11261 | c_name = "depend"; | |
11262 | break; | |
11263 | case PRAGMA_OMP_CLAUSE_MAP: | |
11264 | clauses = c_parser_omp_clause_map (parser, clauses); | |
11265 | c_name = "map"; | |
11266 | break; | |
11267 | case PRAGMA_OMP_CLAUSE_DEVICE: | |
11268 | clauses = c_parser_omp_clause_device (parser, clauses); | |
11269 | c_name = "device"; | |
11270 | break; | |
11271 | case PRAGMA_OMP_CLAUSE_DIST_SCHEDULE: | |
11272 | clauses = c_parser_omp_clause_dist_schedule (parser, clauses); | |
11273 | c_name = "dist_schedule"; | |
11274 | break; | |
11275 | case PRAGMA_OMP_CLAUSE_PROC_BIND: | |
11276 | clauses = c_parser_omp_clause_proc_bind (parser, clauses); | |
11277 | c_name = "proc_bind"; | |
11278 | break; | |
11279 | case PRAGMA_OMP_CLAUSE_SAFELEN: | |
11280 | clauses = c_parser_omp_clause_safelen (parser, clauses); | |
11281 | c_name = "safelen"; | |
11282 | break; | |
41958c28 BI |
11283 | case PRAGMA_CILK_CLAUSE_VECTORLENGTH: |
11284 | clauses = c_parser_cilk_clause_vectorlength (parser, clauses, true); | |
11285 | c_name = "simdlen"; | |
11286 | break; | |
acf0174b JJ |
11287 | case PRAGMA_OMP_CLAUSE_SIMDLEN: |
11288 | clauses = c_parser_omp_clause_simdlen (parser, clauses); | |
11289 | c_name = "simdlen"; | |
11290 | break; | |
953ff289 | 11291 | default: |
acf0174b | 11292 | c_parser_error (parser, "expected %<#pragma omp%> clause"); |
953ff289 DN |
11293 | goto saw_error; |
11294 | } | |
11295 | ||
acf0174b JJ |
11296 | first = false; |
11297 | ||
11298 | if (((mask >> c_kind) & 1) == 0 && !parser->error) | |
11299 | { | |
11300 | /* Remove the invalid clause(s) from the list to avoid | |
11301 | confusing the rest of the compiler. */ | |
11302 | clauses = prev; | |
11303 | error_at (here, "%qs is not valid for %qs", c_name, where); | |
11304 | } | |
11305 | } | |
11306 | ||
11307 | saw_error: | |
11308 | c_parser_skip_to_pragma_eol (parser); | |
11309 | ||
11310 | if (finish_p) | |
11311 | return c_finish_omp_clauses (clauses); | |
11312 | ||
11313 | return clauses; | |
11314 | } | |
11315 | ||
11316 | /* OpenMP 2.5: | |
11317 | structured-block: | |
11318 | statement | |
11319 | ||
11320 | In practice, we're also interested in adding the statement to an | |
11321 | outer node. So it is convenient if we work around the fact that | |
11322 | c_parser_statement calls add_stmt. */ | |
11323 | ||
11324 | static tree | |
11325 | c_parser_omp_structured_block (c_parser *parser) | |
11326 | { | |
11327 | tree stmt = push_stmt_list (); | |
11328 | c_parser_statement (parser); | |
11329 | return pop_stmt_list (stmt); | |
11330 | } | |
11331 | ||
11332 | /* OpenMP 2.5: | |
11333 | # pragma omp atomic new-line | |
11334 | expression-stmt | |
11335 | ||
11336 | expression-stmt: | |
11337 | x binop= expr | x++ | ++x | x-- | --x | |
11338 | binop: | |
11339 | +, *, -, /, &, ^, |, <<, >> | |
11340 | ||
11341 | where x is an lvalue expression with scalar type. | |
11342 | ||
11343 | OpenMP 3.1: | |
11344 | # pragma omp atomic new-line | |
11345 | update-stmt | |
11346 | ||
11347 | # pragma omp atomic read new-line | |
11348 | read-stmt | |
11349 | ||
11350 | # pragma omp atomic write new-line | |
11351 | write-stmt | |
11352 | ||
11353 | # pragma omp atomic update new-line | |
11354 | update-stmt | |
11355 | ||
11356 | # pragma omp atomic capture new-line | |
11357 | capture-stmt | |
11358 | ||
11359 | # pragma omp atomic capture new-line | |
11360 | capture-block | |
11361 | ||
11362 | read-stmt: | |
11363 | v = x | |
11364 | write-stmt: | |
11365 | x = expr | |
11366 | update-stmt: | |
11367 | expression-stmt | x = x binop expr | |
11368 | capture-stmt: | |
11369 | v = expression-stmt | |
11370 | capture-block: | |
11371 | { v = x; update-stmt; } | { update-stmt; v = x; } | |
11372 | ||
11373 | OpenMP 4.0: | |
11374 | update-stmt: | |
11375 | expression-stmt | x = x binop expr | x = expr binop x | |
11376 | capture-stmt: | |
11377 | v = update-stmt | |
11378 | capture-block: | |
11379 | { v = x; update-stmt; } | { update-stmt; v = x; } | { v = x; x = expr; } | |
11380 | ||
11381 | where x and v are lvalue expressions with scalar type. | |
11382 | ||
11383 | LOC is the location of the #pragma token. */ | |
11384 | ||
11385 | static void | |
11386 | c_parser_omp_atomic (location_t loc, c_parser *parser) | |
11387 | { | |
11388 | tree lhs = NULL_TREE, rhs = NULL_TREE, v = NULL_TREE; | |
11389 | tree lhs1 = NULL_TREE, rhs1 = NULL_TREE; | |
11390 | tree stmt, orig_lhs, unfolded_lhs = NULL_TREE, unfolded_lhs1 = NULL_TREE; | |
11391 | enum tree_code code = OMP_ATOMIC, opcode = NOP_EXPR; | |
11392 | struct c_expr expr; | |
11393 | location_t eloc; | |
11394 | bool structured_block = false; | |
11395 | bool swapped = false; | |
11396 | bool seq_cst = false; | |
11397 | ||
42056eac JJ |
11398 | if (c_parser_next_token_is (parser, CPP_NAME)) |
11399 | { | |
11400 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
11401 | if (!strcmp (p, "seq_cst")) | |
11402 | { | |
11403 | seq_cst = true; | |
11404 | c_parser_consume_token (parser); | |
11405 | if (c_parser_next_token_is (parser, CPP_COMMA) | |
11406 | && c_parser_peek_2nd_token (parser)->type == CPP_NAME) | |
11407 | c_parser_consume_token (parser); | |
11408 | } | |
11409 | } | |
acf0174b JJ |
11410 | if (c_parser_next_token_is (parser, CPP_NAME)) |
11411 | { | |
11412 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
11413 | ||
11414 | if (!strcmp (p, "read")) | |
11415 | code = OMP_ATOMIC_READ; | |
11416 | else if (!strcmp (p, "write")) | |
11417 | code = NOP_EXPR; | |
11418 | else if (!strcmp (p, "update")) | |
11419 | code = OMP_ATOMIC; | |
11420 | else if (!strcmp (p, "capture")) | |
11421 | code = OMP_ATOMIC_CAPTURE_NEW; | |
11422 | else | |
11423 | p = NULL; | |
11424 | if (p) | |
11425 | c_parser_consume_token (parser); | |
11426 | } | |
42056eac | 11427 | if (!seq_cst) |
acf0174b | 11428 | { |
42056eac JJ |
11429 | if (c_parser_next_token_is (parser, CPP_COMMA) |
11430 | && c_parser_peek_2nd_token (parser)->type == CPP_NAME) | |
11431 | c_parser_consume_token (parser); | |
11432 | ||
11433 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
acf0174b | 11434 | { |
42056eac JJ |
11435 | const char *p |
11436 | = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
11437 | if (!strcmp (p, "seq_cst")) | |
11438 | { | |
11439 | seq_cst = true; | |
11440 | c_parser_consume_token (parser); | |
11441 | } | |
acf0174b JJ |
11442 | } |
11443 | } | |
11444 | c_parser_skip_to_pragma_eol (parser); | |
11445 | ||
11446 | switch (code) | |
11447 | { | |
11448 | case OMP_ATOMIC_READ: | |
11449 | case NOP_EXPR: /* atomic write */ | |
11450 | v = c_parser_unary_expression (parser).value; | |
11451 | v = c_fully_fold (v, false, NULL); | |
11452 | if (v == error_mark_node) | |
11453 | goto saw_error; | |
11454 | loc = c_parser_peek_token (parser)->location; | |
11455 | if (!c_parser_require (parser, CPP_EQ, "expected %<=%>")) | |
11456 | goto saw_error; | |
11457 | if (code == NOP_EXPR) | |
11458 | lhs = c_parser_expression (parser).value; | |
11459 | else | |
11460 | lhs = c_parser_unary_expression (parser).value; | |
11461 | lhs = c_fully_fold (lhs, false, NULL); | |
11462 | if (lhs == error_mark_node) | |
11463 | goto saw_error; | |
11464 | if (code == NOP_EXPR) | |
11465 | { | |
11466 | /* atomic write is represented by OMP_ATOMIC with NOP_EXPR | |
11467 | opcode. */ | |
11468 | code = OMP_ATOMIC; | |
11469 | rhs = lhs; | |
11470 | lhs = v; | |
11471 | v = NULL_TREE; | |
11472 | } | |
11473 | goto done; | |
11474 | case OMP_ATOMIC_CAPTURE_NEW: | |
11475 | if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
11476 | { | |
11477 | c_parser_consume_token (parser); | |
11478 | structured_block = true; | |
11479 | } | |
11480 | else | |
11481 | { | |
11482 | v = c_parser_unary_expression (parser).value; | |
11483 | v = c_fully_fold (v, false, NULL); | |
11484 | if (v == error_mark_node) | |
11485 | goto saw_error; | |
11486 | if (!c_parser_require (parser, CPP_EQ, "expected %<=%>")) | |
11487 | goto saw_error; | |
11488 | } | |
11489 | break; | |
11490 | default: | |
11491 | break; | |
11492 | } | |
11493 | ||
11494 | /* For structured_block case we don't know yet whether | |
11495 | old or new x should be captured. */ | |
11496 | restart: | |
11497 | eloc = c_parser_peek_token (parser)->location; | |
11498 | expr = c_parser_unary_expression (parser); | |
11499 | lhs = expr.value; | |
11500 | expr = default_function_array_conversion (eloc, expr); | |
11501 | unfolded_lhs = expr.value; | |
11502 | lhs = c_fully_fold (lhs, false, NULL); | |
11503 | orig_lhs = lhs; | |
11504 | switch (TREE_CODE (lhs)) | |
11505 | { | |
11506 | case ERROR_MARK: | |
11507 | saw_error: | |
11508 | c_parser_skip_to_end_of_block_or_statement (parser); | |
11509 | if (structured_block) | |
11510 | { | |
11511 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
11512 | c_parser_consume_token (parser); | |
11513 | else if (code == OMP_ATOMIC_CAPTURE_NEW) | |
11514 | { | |
11515 | c_parser_skip_to_end_of_block_or_statement (parser); | |
11516 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
11517 | c_parser_consume_token (parser); | |
11518 | } | |
11519 | } | |
11520 | return; | |
11521 | ||
11522 | case POSTINCREMENT_EXPR: | |
11523 | if (code == OMP_ATOMIC_CAPTURE_NEW && !structured_block) | |
11524 | code = OMP_ATOMIC_CAPTURE_OLD; | |
11525 | /* FALLTHROUGH */ | |
11526 | case PREINCREMENT_EXPR: | |
11527 | lhs = TREE_OPERAND (lhs, 0); | |
11528 | unfolded_lhs = NULL_TREE; | |
11529 | opcode = PLUS_EXPR; | |
11530 | rhs = integer_one_node; | |
11531 | break; | |
11532 | ||
11533 | case POSTDECREMENT_EXPR: | |
11534 | if (code == OMP_ATOMIC_CAPTURE_NEW && !structured_block) | |
11535 | code = OMP_ATOMIC_CAPTURE_OLD; | |
11536 | /* FALLTHROUGH */ | |
11537 | case PREDECREMENT_EXPR: | |
11538 | lhs = TREE_OPERAND (lhs, 0); | |
11539 | unfolded_lhs = NULL_TREE; | |
11540 | opcode = MINUS_EXPR; | |
11541 | rhs = integer_one_node; | |
11542 | break; | |
11543 | ||
11544 | case COMPOUND_EXPR: | |
11545 | if (TREE_CODE (TREE_OPERAND (lhs, 0)) == SAVE_EXPR | |
11546 | && TREE_CODE (TREE_OPERAND (lhs, 1)) == COMPOUND_EXPR | |
11547 | && TREE_CODE (TREE_OPERAND (TREE_OPERAND (lhs, 1), 0)) == MODIFY_EXPR | |
11548 | && TREE_OPERAND (TREE_OPERAND (lhs, 1), 1) == TREE_OPERAND (lhs, 0) | |
11549 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (TREE_OPERAND | |
11550 | (TREE_OPERAND (lhs, 1), 0), 0))) | |
11551 | == BOOLEAN_TYPE) | |
11552 | /* Undo effects of boolean_increment for post {in,de}crement. */ | |
11553 | lhs = TREE_OPERAND (TREE_OPERAND (lhs, 1), 0); | |
11554 | /* FALLTHRU */ | |
11555 | case MODIFY_EXPR: | |
11556 | if (TREE_CODE (lhs) == MODIFY_EXPR | |
11557 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (lhs, 0))) == BOOLEAN_TYPE) | |
11558 | { | |
11559 | /* Undo effects of boolean_increment. */ | |
11560 | if (integer_onep (TREE_OPERAND (lhs, 1))) | |
11561 | { | |
11562 | /* This is pre or post increment. */ | |
11563 | rhs = TREE_OPERAND (lhs, 1); | |
11564 | lhs = TREE_OPERAND (lhs, 0); | |
11565 | unfolded_lhs = NULL_TREE; | |
11566 | opcode = NOP_EXPR; | |
11567 | if (code == OMP_ATOMIC_CAPTURE_NEW | |
11568 | && !structured_block | |
11569 | && TREE_CODE (orig_lhs) == COMPOUND_EXPR) | |
11570 | code = OMP_ATOMIC_CAPTURE_OLD; | |
11571 | break; | |
11572 | } | |
11573 | if (TREE_CODE (TREE_OPERAND (lhs, 1)) == TRUTH_NOT_EXPR | |
11574 | && TREE_OPERAND (lhs, 0) | |
11575 | == TREE_OPERAND (TREE_OPERAND (lhs, 1), 0)) | |
11576 | { | |
11577 | /* This is pre or post decrement. */ | |
11578 | rhs = TREE_OPERAND (lhs, 1); | |
11579 | lhs = TREE_OPERAND (lhs, 0); | |
11580 | unfolded_lhs = NULL_TREE; | |
11581 | opcode = NOP_EXPR; | |
11582 | if (code == OMP_ATOMIC_CAPTURE_NEW | |
11583 | && !structured_block | |
11584 | && TREE_CODE (orig_lhs) == COMPOUND_EXPR) | |
11585 | code = OMP_ATOMIC_CAPTURE_OLD; | |
11586 | break; | |
11587 | } | |
11588 | } | |
11589 | /* FALLTHRU */ | |
11590 | default: | |
11591 | switch (c_parser_peek_token (parser)->type) | |
11592 | { | |
11593 | case CPP_MULT_EQ: | |
11594 | opcode = MULT_EXPR; | |
11595 | break; | |
11596 | case CPP_DIV_EQ: | |
11597 | opcode = TRUNC_DIV_EXPR; | |
11598 | break; | |
11599 | case CPP_PLUS_EQ: | |
11600 | opcode = PLUS_EXPR; | |
11601 | break; | |
11602 | case CPP_MINUS_EQ: | |
11603 | opcode = MINUS_EXPR; | |
11604 | break; | |
11605 | case CPP_LSHIFT_EQ: | |
11606 | opcode = LSHIFT_EXPR; | |
11607 | break; | |
11608 | case CPP_RSHIFT_EQ: | |
11609 | opcode = RSHIFT_EXPR; | |
11610 | break; | |
11611 | case CPP_AND_EQ: | |
11612 | opcode = BIT_AND_EXPR; | |
11613 | break; | |
11614 | case CPP_OR_EQ: | |
11615 | opcode = BIT_IOR_EXPR; | |
11616 | break; | |
11617 | case CPP_XOR_EQ: | |
11618 | opcode = BIT_XOR_EXPR; | |
11619 | break; | |
11620 | case CPP_EQ: | |
11621 | c_parser_consume_token (parser); | |
11622 | eloc = c_parser_peek_token (parser)->location; | |
11623 | expr = c_parser_expr_no_commas (parser, NULL, unfolded_lhs); | |
11624 | rhs1 = expr.value; | |
11625 | switch (TREE_CODE (rhs1)) | |
11626 | { | |
11627 | case MULT_EXPR: | |
11628 | case TRUNC_DIV_EXPR: | |
11629 | case PLUS_EXPR: | |
11630 | case MINUS_EXPR: | |
11631 | case LSHIFT_EXPR: | |
11632 | case RSHIFT_EXPR: | |
11633 | case BIT_AND_EXPR: | |
11634 | case BIT_IOR_EXPR: | |
11635 | case BIT_XOR_EXPR: | |
11636 | if (c_tree_equal (TREE_OPERAND (rhs1, 0), unfolded_lhs)) | |
11637 | { | |
11638 | opcode = TREE_CODE (rhs1); | |
11639 | rhs = c_fully_fold (TREE_OPERAND (rhs1, 1), false, NULL); | |
11640 | rhs1 = c_fully_fold (TREE_OPERAND (rhs1, 0), false, NULL); | |
11641 | goto stmt_done; | |
11642 | } | |
11643 | if (c_tree_equal (TREE_OPERAND (rhs1, 1), unfolded_lhs)) | |
11644 | { | |
11645 | opcode = TREE_CODE (rhs1); | |
11646 | rhs = c_fully_fold (TREE_OPERAND (rhs1, 0), false, NULL); | |
11647 | rhs1 = c_fully_fold (TREE_OPERAND (rhs1, 1), false, NULL); | |
11648 | swapped = !commutative_tree_code (opcode); | |
11649 | goto stmt_done; | |
11650 | } | |
11651 | break; | |
11652 | case ERROR_MARK: | |
11653 | goto saw_error; | |
11654 | default: | |
11655 | break; | |
11656 | } | |
11657 | if (c_parser_peek_token (parser)->type == CPP_SEMICOLON) | |
11658 | { | |
11659 | if (structured_block && code == OMP_ATOMIC_CAPTURE_NEW) | |
11660 | { | |
11661 | code = OMP_ATOMIC_CAPTURE_OLD; | |
11662 | v = lhs; | |
11663 | lhs = NULL_TREE; | |
11664 | expr = default_function_array_read_conversion (eloc, expr); | |
11665 | unfolded_lhs1 = expr.value; | |
11666 | lhs1 = c_fully_fold (unfolded_lhs1, false, NULL); | |
11667 | rhs1 = NULL_TREE; | |
11668 | c_parser_consume_token (parser); | |
11669 | goto restart; | |
11670 | } | |
11671 | if (structured_block) | |
11672 | { | |
11673 | opcode = NOP_EXPR; | |
11674 | expr = default_function_array_read_conversion (eloc, expr); | |
11675 | rhs = c_fully_fold (expr.value, false, NULL); | |
11676 | rhs1 = NULL_TREE; | |
11677 | goto stmt_done; | |
11678 | } | |
11679 | } | |
11680 | c_parser_error (parser, "invalid form of %<#pragma omp atomic%>"); | |
11681 | goto saw_error; | |
11682 | default: | |
11683 | c_parser_error (parser, | |
11684 | "invalid operator for %<#pragma omp atomic%>"); | |
11685 | goto saw_error; | |
11686 | } | |
11687 | ||
11688 | /* Arrange to pass the location of the assignment operator to | |
11689 | c_finish_omp_atomic. */ | |
11690 | loc = c_parser_peek_token (parser)->location; | |
11691 | c_parser_consume_token (parser); | |
11692 | eloc = c_parser_peek_token (parser)->location; | |
11693 | expr = c_parser_expression (parser); | |
11694 | expr = default_function_array_read_conversion (eloc, expr); | |
11695 | rhs = expr.value; | |
11696 | rhs = c_fully_fold (rhs, false, NULL); | |
11697 | break; | |
11698 | } | |
11699 | stmt_done: | |
11700 | if (structured_block && code == OMP_ATOMIC_CAPTURE_NEW) | |
11701 | { | |
11702 | if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>")) | |
11703 | goto saw_error; | |
11704 | v = c_parser_unary_expression (parser).value; | |
11705 | v = c_fully_fold (v, false, NULL); | |
11706 | if (v == error_mark_node) | |
11707 | goto saw_error; | |
11708 | if (!c_parser_require (parser, CPP_EQ, "expected %<=%>")) | |
11709 | goto saw_error; | |
11710 | eloc = c_parser_peek_token (parser)->location; | |
11711 | expr = c_parser_unary_expression (parser); | |
11712 | lhs1 = expr.value; | |
11713 | expr = default_function_array_read_conversion (eloc, expr); | |
11714 | unfolded_lhs1 = expr.value; | |
11715 | lhs1 = c_fully_fold (lhs1, false, NULL); | |
11716 | if (lhs1 == error_mark_node) | |
11717 | goto saw_error; | |
11718 | } | |
11719 | if (structured_block) | |
11720 | { | |
11721 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
11722 | c_parser_require (parser, CPP_CLOSE_BRACE, "expected %<}%>"); | |
11723 | } | |
11724 | done: | |
11725 | if (unfolded_lhs && unfolded_lhs1 | |
11726 | && !c_tree_equal (unfolded_lhs, unfolded_lhs1)) | |
11727 | { | |
11728 | error ("%<#pragma omp atomic capture%> uses two different " | |
11729 | "expressions for memory"); | |
11730 | stmt = error_mark_node; | |
11731 | } | |
11732 | else | |
11733 | stmt = c_finish_omp_atomic (loc, code, opcode, lhs, rhs, v, lhs1, rhs1, | |
11734 | swapped, seq_cst); | |
11735 | if (stmt != error_mark_node) | |
11736 | add_stmt (stmt); | |
11737 | ||
11738 | if (!structured_block) | |
11739 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
11740 | } | |
11741 | ||
11742 | ||
11743 | /* OpenMP 2.5: | |
11744 | # pragma omp barrier new-line | |
11745 | */ | |
11746 | ||
11747 | static void | |
11748 | c_parser_omp_barrier (c_parser *parser) | |
11749 | { | |
11750 | location_t loc = c_parser_peek_token (parser)->location; | |
11751 | c_parser_consume_pragma (parser); | |
11752 | c_parser_skip_to_pragma_eol (parser); | |
11753 | ||
11754 | c_finish_omp_barrier (loc); | |
11755 | } | |
11756 | ||
11757 | /* OpenMP 2.5: | |
11758 | # pragma omp critical [(name)] new-line | |
11759 | structured-block | |
11760 | ||
11761 | LOC is the location of the #pragma itself. */ | |
11762 | ||
11763 | static tree | |
11764 | c_parser_omp_critical (location_t loc, c_parser *parser) | |
11765 | { | |
11766 | tree stmt, name = NULL; | |
11767 | ||
11768 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
11769 | { | |
11770 | c_parser_consume_token (parser); | |
11771 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
11772 | { | |
11773 | name = c_parser_peek_token (parser)->value; | |
11774 | c_parser_consume_token (parser); | |
11775 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
11776 | } | |
11777 | else | |
11778 | c_parser_error (parser, "expected identifier"); | |
11779 | } | |
11780 | else if (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
11781 | c_parser_error (parser, "expected %<(%> or end of line"); | |
11782 | c_parser_skip_to_pragma_eol (parser); | |
11783 | ||
11784 | stmt = c_parser_omp_structured_block (parser); | |
11785 | return c_finish_omp_critical (loc, stmt, name); | |
11786 | } | |
11787 | ||
11788 | /* OpenMP 2.5: | |
11789 | # pragma omp flush flush-vars[opt] new-line | |
11790 | ||
11791 | flush-vars: | |
11792 | ( variable-list ) */ | |
11793 | ||
11794 | static void | |
11795 | c_parser_omp_flush (c_parser *parser) | |
11796 | { | |
11797 | location_t loc = c_parser_peek_token (parser)->location; | |
11798 | c_parser_consume_pragma (parser); | |
11799 | if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)) | |
11800 | c_parser_omp_var_list_parens (parser, OMP_CLAUSE_ERROR, NULL); | |
11801 | else if (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
11802 | c_parser_error (parser, "expected %<(%> or end of line"); | |
11803 | c_parser_skip_to_pragma_eol (parser); | |
11804 | ||
11805 | c_finish_omp_flush (loc); | |
11806 | } | |
11807 | ||
11808 | /* Parse the restricted form of the for statement allowed by OpenMP. | |
11809 | The real trick here is to determine the loop control variable early | |
11810 | so that we can push a new decl if necessary to make it private. | |
11811 | LOC is the location of the OMP in "#pragma omp". */ | |
11812 | ||
11813 | static tree | |
11814 | c_parser_omp_for_loop (location_t loc, c_parser *parser, enum tree_code code, | |
11815 | tree clauses, tree *cclauses) | |
11816 | { | |
11817 | tree decl, cond, incr, save_break, save_cont, body, init, stmt, cl; | |
11818 | tree declv, condv, incrv, initv, ret = NULL; | |
11819 | bool fail = false, open_brace_parsed = false; | |
11820 | int i, collapse = 1, nbraces = 0; | |
11821 | location_t for_loc; | |
11822 | vec<tree, va_gc> *for_block = make_tree_vector (); | |
11823 | ||
11824 | for (cl = clauses; cl; cl = OMP_CLAUSE_CHAIN (cl)) | |
11825 | if (OMP_CLAUSE_CODE (cl) == OMP_CLAUSE_COLLAPSE) | |
9439e9a1 | 11826 | collapse = tree_to_shwi (OMP_CLAUSE_COLLAPSE_EXPR (cl)); |
acf0174b JJ |
11827 | |
11828 | gcc_assert (collapse >= 1); | |
11829 | ||
11830 | declv = make_tree_vec (collapse); | |
11831 | initv = make_tree_vec (collapse); | |
11832 | condv = make_tree_vec (collapse); | |
11833 | incrv = make_tree_vec (collapse); | |
11834 | ||
9a771876 JJ |
11835 | if (code != CILK_FOR |
11836 | && !c_parser_next_token_is_keyword (parser, RID_FOR)) | |
acf0174b JJ |
11837 | { |
11838 | c_parser_error (parser, "for statement expected"); | |
11839 | return NULL; | |
11840 | } | |
9a771876 JJ |
11841 | if (code == CILK_FOR |
11842 | && !c_parser_next_token_is_keyword (parser, RID_CILK_FOR)) | |
11843 | { | |
11844 | c_parser_error (parser, "_Cilk_for statement expected"); | |
11845 | return NULL; | |
11846 | } | |
acf0174b JJ |
11847 | for_loc = c_parser_peek_token (parser)->location; |
11848 | c_parser_consume_token (parser); | |
11849 | ||
11850 | for (i = 0; i < collapse; i++) | |
11851 | { | |
11852 | int bracecount = 0; | |
11853 | ||
11854 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
11855 | goto pop_scopes; | |
11856 | ||
11857 | /* Parse the initialization declaration or expression. */ | |
11858 | if (c_parser_next_tokens_start_declaration (parser)) | |
11859 | { | |
11860 | if (i > 0) | |
11861 | vec_safe_push (for_block, c_begin_compound_stmt (true)); | |
11862 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, | |
11863 | NULL, vNULL); | |
11864 | decl = check_for_loop_decls (for_loc, flag_isoc99); | |
11865 | if (decl == NULL) | |
11866 | goto error_init; | |
11867 | if (DECL_INITIAL (decl) == error_mark_node) | |
11868 | decl = error_mark_node; | |
11869 | init = decl; | |
11870 | } | |
11871 | else if (c_parser_next_token_is (parser, CPP_NAME) | |
11872 | && c_parser_peek_2nd_token (parser)->type == CPP_EQ) | |
11873 | { | |
11874 | struct c_expr decl_exp; | |
11875 | struct c_expr init_exp; | |
11876 | location_t init_loc; | |
11877 | ||
11878 | decl_exp = c_parser_postfix_expression (parser); | |
11879 | decl = decl_exp.value; | |
11880 | ||
11881 | c_parser_require (parser, CPP_EQ, "expected %<=%>"); | |
11882 | ||
11883 | init_loc = c_parser_peek_token (parser)->location; | |
11884 | init_exp = c_parser_expr_no_commas (parser, NULL); | |
11885 | init_exp = default_function_array_read_conversion (init_loc, | |
11886 | init_exp); | |
11887 | init = build_modify_expr (init_loc, decl, decl_exp.original_type, | |
11888 | NOP_EXPR, init_loc, init_exp.value, | |
11889 | init_exp.original_type); | |
11890 | init = c_process_expr_stmt (init_loc, init); | |
11891 | ||
11892 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
11893 | } | |
11894 | else | |
11895 | { | |
11896 | error_init: | |
11897 | c_parser_error (parser, | |
11898 | "expected iteration declaration or initialization"); | |
11899 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, | |
11900 | "expected %<)%>"); | |
11901 | fail = true; | |
11902 | goto parse_next; | |
11903 | } | |
11904 | ||
11905 | /* Parse the loop condition. */ | |
11906 | cond = NULL_TREE; | |
11907 | if (c_parser_next_token_is_not (parser, CPP_SEMICOLON)) | |
11908 | { | |
11909 | location_t cond_loc = c_parser_peek_token (parser)->location; | |
11910 | struct c_expr cond_expr | |
11911 | = c_parser_binary_expression (parser, NULL, NULL_TREE); | |
11912 | ||
11913 | cond = cond_expr.value; | |
11914 | cond = c_objc_common_truthvalue_conversion (cond_loc, cond); | |
11915 | cond = c_fully_fold (cond, false, NULL); | |
11916 | switch (cond_expr.original_code) | |
11917 | { | |
11918 | case GT_EXPR: | |
11919 | case GE_EXPR: | |
11920 | case LT_EXPR: | |
11921 | case LE_EXPR: | |
11922 | break; | |
c02065fc | 11923 | case NE_EXPR: |
9a771876 | 11924 | if (code == CILK_SIMD || code == CILK_FOR) |
c02065fc AH |
11925 | break; |
11926 | /* FALLTHRU. */ | |
acf0174b JJ |
11927 | default: |
11928 | /* Can't be cond = error_mark_node, because we want to preserve | |
11929 | the location until c_finish_omp_for. */ | |
11930 | cond = build1 (NOP_EXPR, boolean_type_node, error_mark_node); | |
11931 | break; | |
11932 | } | |
11933 | protected_set_expr_location (cond, cond_loc); | |
11934 | } | |
11935 | c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>"); | |
11936 | ||
11937 | /* Parse the increment expression. */ | |
11938 | incr = NULL_TREE; | |
11939 | if (c_parser_next_token_is_not (parser, CPP_CLOSE_PAREN)) | |
11940 | { | |
11941 | location_t incr_loc = c_parser_peek_token (parser)->location; | |
11942 | ||
11943 | incr = c_process_expr_stmt (incr_loc, | |
11944 | c_parser_expression (parser).value); | |
11945 | } | |
11946 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
11947 | ||
11948 | if (decl == NULL || decl == error_mark_node || init == error_mark_node) | |
11949 | fail = true; | |
11950 | else | |
11951 | { | |
11952 | TREE_VEC_ELT (declv, i) = decl; | |
11953 | TREE_VEC_ELT (initv, i) = init; | |
11954 | TREE_VEC_ELT (condv, i) = cond; | |
11955 | TREE_VEC_ELT (incrv, i) = incr; | |
11956 | } | |
11957 | ||
11958 | parse_next: | |
11959 | if (i == collapse - 1) | |
11960 | break; | |
11961 | ||
11962 | /* FIXME: OpenMP 3.0 draft isn't very clear on what exactly is allowed | |
11963 | in between the collapsed for loops to be still considered perfectly | |
11964 | nested. Hopefully the final version clarifies this. | |
11965 | For now handle (multiple) {'s and empty statements. */ | |
11966 | do | |
11967 | { | |
11968 | if (c_parser_next_token_is_keyword (parser, RID_FOR)) | |
11969 | { | |
11970 | c_parser_consume_token (parser); | |
11971 | break; | |
11972 | } | |
11973 | else if (c_parser_next_token_is (parser, CPP_OPEN_BRACE)) | |
11974 | { | |
11975 | c_parser_consume_token (parser); | |
11976 | bracecount++; | |
11977 | } | |
11978 | else if (bracecount | |
11979 | && c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
11980 | c_parser_consume_token (parser); | |
11981 | else | |
11982 | { | |
11983 | c_parser_error (parser, "not enough perfectly nested loops"); | |
11984 | if (bracecount) | |
11985 | { | |
11986 | open_brace_parsed = true; | |
11987 | bracecount--; | |
11988 | } | |
11989 | fail = true; | |
11990 | collapse = 0; | |
11991 | break; | |
11992 | } | |
11993 | } | |
11994 | while (1); | |
11995 | ||
11996 | nbraces += bracecount; | |
11997 | } | |
11998 | ||
11999 | save_break = c_break_label; | |
c02065fc AH |
12000 | if (code == CILK_SIMD) |
12001 | c_break_label = build_int_cst (size_type_node, 2); | |
12002 | else | |
12003 | c_break_label = size_one_node; | |
acf0174b JJ |
12004 | save_cont = c_cont_label; |
12005 | c_cont_label = NULL_TREE; | |
12006 | body = push_stmt_list (); | |
12007 | ||
12008 | if (open_brace_parsed) | |
12009 | { | |
12010 | location_t here = c_parser_peek_token (parser)->location; | |
12011 | stmt = c_begin_compound_stmt (true); | |
12012 | c_parser_compound_statement_nostart (parser); | |
12013 | add_stmt (c_end_compound_stmt (here, stmt, true)); | |
12014 | } | |
12015 | else | |
12016 | add_stmt (c_parser_c99_block_statement (parser)); | |
12017 | if (c_cont_label) | |
12018 | { | |
12019 | tree t = build1 (LABEL_EXPR, void_type_node, c_cont_label); | |
12020 | SET_EXPR_LOCATION (t, loc); | |
12021 | add_stmt (t); | |
12022 | } | |
12023 | ||
12024 | body = pop_stmt_list (body); | |
12025 | c_break_label = save_break; | |
12026 | c_cont_label = save_cont; | |
12027 | ||
12028 | while (nbraces) | |
12029 | { | |
12030 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
12031 | { | |
12032 | c_parser_consume_token (parser); | |
12033 | nbraces--; | |
12034 | } | |
12035 | else if (c_parser_next_token_is (parser, CPP_SEMICOLON)) | |
12036 | c_parser_consume_token (parser); | |
12037 | else | |
12038 | { | |
12039 | c_parser_error (parser, "collapsed loops not perfectly nested"); | |
12040 | while (nbraces) | |
12041 | { | |
12042 | location_t here = c_parser_peek_token (parser)->location; | |
12043 | stmt = c_begin_compound_stmt (true); | |
12044 | add_stmt (body); | |
12045 | c_parser_compound_statement_nostart (parser); | |
12046 | body = c_end_compound_stmt (here, stmt, true); | |
12047 | nbraces--; | |
12048 | } | |
12049 | goto pop_scopes; | |
12050 | } | |
12051 | } | |
12052 | ||
12053 | /* Only bother calling c_finish_omp_for if we haven't already generated | |
12054 | an error from the initialization parsing. */ | |
12055 | if (!fail) | |
12056 | { | |
12057 | stmt = c_finish_omp_for (loc, code, declv, initv, condv, | |
12058 | incrv, body, NULL); | |
12059 | if (stmt) | |
12060 | { | |
12061 | if (cclauses != NULL | |
12062 | && cclauses[C_OMP_CLAUSE_SPLIT_PARALLEL] != NULL) | |
12063 | { | |
12064 | tree *c; | |
12065 | for (c = &cclauses[C_OMP_CLAUSE_SPLIT_PARALLEL]; *c ; ) | |
12066 | if (OMP_CLAUSE_CODE (*c) != OMP_CLAUSE_FIRSTPRIVATE | |
12067 | && OMP_CLAUSE_CODE (*c) != OMP_CLAUSE_LASTPRIVATE) | |
12068 | c = &OMP_CLAUSE_CHAIN (*c); | |
12069 | else | |
12070 | { | |
12071 | for (i = 0; i < collapse; i++) | |
12072 | if (TREE_VEC_ELT (declv, i) == OMP_CLAUSE_DECL (*c)) | |
12073 | break; | |
12074 | if (i == collapse) | |
12075 | c = &OMP_CLAUSE_CHAIN (*c); | |
12076 | else if (OMP_CLAUSE_CODE (*c) == OMP_CLAUSE_FIRSTPRIVATE) | |
12077 | { | |
12078 | error_at (loc, | |
12079 | "iteration variable %qD should not be firstprivate", | |
12080 | OMP_CLAUSE_DECL (*c)); | |
12081 | *c = OMP_CLAUSE_CHAIN (*c); | |
12082 | } | |
12083 | else | |
12084 | { | |
12085 | /* Copy lastprivate (decl) clause to OMP_FOR_CLAUSES, | |
12086 | change it to shared (decl) in | |
12087 | OMP_PARALLEL_CLAUSES. */ | |
12088 | tree l = build_omp_clause (OMP_CLAUSE_LOCATION (*c), | |
12089 | OMP_CLAUSE_LASTPRIVATE); | |
12090 | OMP_CLAUSE_DECL (l) = OMP_CLAUSE_DECL (*c); | |
56ad0e38 JJ |
12091 | if (code == OMP_SIMD) |
12092 | { | |
12093 | OMP_CLAUSE_CHAIN (l) | |
12094 | = cclauses[C_OMP_CLAUSE_SPLIT_FOR]; | |
12095 | cclauses[C_OMP_CLAUSE_SPLIT_FOR] = l; | |
12096 | } | |
12097 | else | |
12098 | { | |
12099 | OMP_CLAUSE_CHAIN (l) = clauses; | |
12100 | clauses = l; | |
12101 | } | |
acf0174b JJ |
12102 | OMP_CLAUSE_SET_CODE (*c, OMP_CLAUSE_SHARED); |
12103 | } | |
12104 | } | |
12105 | } | |
12106 | OMP_FOR_CLAUSES (stmt) = clauses; | |
12107 | } | |
12108 | ret = stmt; | |
12109 | } | |
12110 | pop_scopes: | |
12111 | while (!for_block->is_empty ()) | |
12112 | { | |
12113 | /* FIXME diagnostics: LOC below should be the actual location of | |
12114 | this particular for block. We need to build a list of | |
12115 | locations to go along with FOR_BLOCK. */ | |
12116 | stmt = c_end_compound_stmt (loc, for_block->pop (), true); | |
12117 | add_stmt (stmt); | |
12118 | } | |
12119 | release_tree_vector (for_block); | |
12120 | return ret; | |
12121 | } | |
12122 | ||
12123 | /* Helper function for OpenMP parsing, split clauses and call | |
12124 | finish_omp_clauses on each of the set of clauses afterwards. */ | |
12125 | ||
12126 | static void | |
12127 | omp_split_clauses (location_t loc, enum tree_code code, | |
12128 | omp_clause_mask mask, tree clauses, tree *cclauses) | |
12129 | { | |
12130 | int i; | |
12131 | c_omp_split_clauses (loc, code, mask, clauses, cclauses); | |
12132 | for (i = 0; i < C_OMP_CLAUSE_SPLIT_COUNT; i++) | |
12133 | if (cclauses[i]) | |
12134 | cclauses[i] = c_finish_omp_clauses (cclauses[i]); | |
12135 | } | |
12136 | ||
12137 | /* OpenMP 4.0: | |
12138 | #pragma omp simd simd-clause[optseq] new-line | |
12139 | for-loop | |
12140 | ||
12141 | LOC is the location of the #pragma token. | |
12142 | */ | |
12143 | ||
12144 | #define OMP_SIMD_CLAUSE_MASK \ | |
12145 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SAFELEN) \ | |
12146 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LINEAR) \ | |
12147 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_ALIGNED) \ | |
12148 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
12149 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \ | |
12150 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
12151 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COLLAPSE)) | |
12152 | ||
12153 | static tree | |
12154 | c_parser_omp_simd (location_t loc, c_parser *parser, | |
12155 | char *p_name, omp_clause_mask mask, tree *cclauses) | |
12156 | { | |
12157 | tree block, clauses, ret; | |
12158 | ||
12159 | strcat (p_name, " simd"); | |
12160 | mask |= OMP_SIMD_CLAUSE_MASK; | |
12161 | mask &= ~(OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_ORDERED); | |
12162 | ||
12163 | clauses = c_parser_omp_all_clauses (parser, mask, p_name, cclauses == NULL); | |
12164 | if (cclauses) | |
12165 | { | |
12166 | omp_split_clauses (loc, OMP_SIMD, mask, clauses, cclauses); | |
12167 | clauses = cclauses[C_OMP_CLAUSE_SPLIT_SIMD]; | |
12168 | } | |
12169 | ||
12170 | block = c_begin_compound_stmt (true); | |
12171 | ret = c_parser_omp_for_loop (loc, parser, OMP_SIMD, clauses, cclauses); | |
12172 | block = c_end_compound_stmt (loc, block, true); | |
12173 | add_stmt (block); | |
12174 | ||
12175 | return ret; | |
12176 | } | |
12177 | ||
12178 | /* OpenMP 2.5: | |
12179 | #pragma omp for for-clause[optseq] new-line | |
12180 | for-loop | |
12181 | ||
12182 | OpenMP 4.0: | |
12183 | #pragma omp for simd for-simd-clause[optseq] new-line | |
12184 | for-loop | |
12185 | ||
12186 | LOC is the location of the #pragma token. | |
12187 | */ | |
12188 | ||
12189 | #define OMP_FOR_CLAUSE_MASK \ | |
12190 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
12191 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
12192 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \ | |
12193 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
12194 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_ORDERED) \ | |
12195 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SCHEDULE) \ | |
12196 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COLLAPSE) \ | |
12197 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOWAIT)) | |
12198 | ||
12199 | static tree | |
12200 | c_parser_omp_for (location_t loc, c_parser *parser, | |
12201 | char *p_name, omp_clause_mask mask, tree *cclauses) | |
12202 | { | |
12203 | tree block, clauses, ret; | |
12204 | ||
12205 | strcat (p_name, " for"); | |
12206 | mask |= OMP_FOR_CLAUSE_MASK; | |
12207 | if (cclauses) | |
12208 | mask &= ~(OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOWAIT); | |
12209 | ||
12210 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
20906c66 | 12211 | { |
acf0174b JJ |
12212 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); |
12213 | ||
12214 | if (strcmp (p, "simd") == 0) | |
12215 | { | |
12216 | tree cclauses_buf[C_OMP_CLAUSE_SPLIT_COUNT]; | |
12217 | if (cclauses == NULL) | |
12218 | cclauses = cclauses_buf; | |
12219 | ||
12220 | c_parser_consume_token (parser); | |
6d7f7e0a TB |
12221 | if (!flag_openmp) /* flag_openmp_simd */ |
12222 | return c_parser_omp_simd (loc, parser, p_name, mask, cclauses); | |
acf0174b JJ |
12223 | block = c_begin_compound_stmt (true); |
12224 | ret = c_parser_omp_simd (loc, parser, p_name, mask, cclauses); | |
12225 | block = c_end_compound_stmt (loc, block, true); | |
12226 | if (ret == NULL_TREE) | |
12227 | return ret; | |
12228 | ret = make_node (OMP_FOR); | |
12229 | TREE_TYPE (ret) = void_type_node; | |
12230 | OMP_FOR_BODY (ret) = block; | |
12231 | OMP_FOR_CLAUSES (ret) = cclauses[C_OMP_CLAUSE_SPLIT_FOR]; | |
12232 | SET_EXPR_LOCATION (ret, loc); | |
12233 | add_stmt (ret); | |
12234 | return ret; | |
12235 | } | |
20906c66 | 12236 | } |
6d7f7e0a TB |
12237 | if (!flag_openmp) /* flag_openmp_simd */ |
12238 | { | |
12239 | c_parser_skip_to_pragma_eol (parser); | |
12240 | return NULL_TREE; | |
12241 | } | |
acf0174b JJ |
12242 | |
12243 | clauses = c_parser_omp_all_clauses (parser, mask, p_name, cclauses == NULL); | |
12244 | if (cclauses) | |
20906c66 | 12245 | { |
acf0174b JJ |
12246 | omp_split_clauses (loc, OMP_FOR, mask, clauses, cclauses); |
12247 | clauses = cclauses[C_OMP_CLAUSE_SPLIT_FOR]; | |
20906c66 | 12248 | } |
20906c66 | 12249 | |
acf0174b JJ |
12250 | block = c_begin_compound_stmt (true); |
12251 | ret = c_parser_omp_for_loop (loc, parser, OMP_FOR, clauses, cclauses); | |
12252 | block = c_end_compound_stmt (loc, block, true); | |
12253 | add_stmt (block); | |
12254 | ||
12255 | return ret; | |
953ff289 DN |
12256 | } |
12257 | ||
acf0174b JJ |
12258 | /* OpenMP 2.5: |
12259 | # pragma omp master new-line | |
12260 | structured-block | |
12261 | ||
12262 | LOC is the location of the #pragma token. | |
12263 | */ | |
12264 | ||
12265 | static tree | |
12266 | c_parser_omp_master (location_t loc, c_parser *parser) | |
12267 | { | |
12268 | c_parser_skip_to_pragma_eol (parser); | |
12269 | return c_finish_omp_master (loc, c_parser_omp_structured_block (parser)); | |
12270 | } | |
953ff289 DN |
12271 | |
12272 | /* OpenMP 2.5: | |
acf0174b JJ |
12273 | # pragma omp ordered new-line |
12274 | structured-block | |
12275 | ||
12276 | LOC is the location of the #pragma itself. | |
953ff289 DN |
12277 | */ |
12278 | ||
acf0174b JJ |
12279 | static tree |
12280 | c_parser_omp_ordered (location_t loc, c_parser *parser) | |
953ff289 | 12281 | { |
953ff289 | 12282 | c_parser_skip_to_pragma_eol (parser); |
acf0174b JJ |
12283 | return c_finish_omp_ordered (loc, c_parser_omp_structured_block (parser)); |
12284 | } | |
953ff289 | 12285 | |
acf0174b JJ |
12286 | /* OpenMP 2.5: |
12287 | ||
12288 | section-scope: | |
12289 | { section-sequence } | |
12290 | ||
12291 | section-sequence: | |
12292 | section-directive[opt] structured-block | |
12293 | section-sequence section-directive structured-block | |
12294 | ||
12295 | SECTIONS_LOC is the location of the #pragma omp sections. */ | |
12296 | ||
12297 | static tree | |
12298 | c_parser_omp_sections_scope (location_t sections_loc, c_parser *parser) | |
12299 | { | |
12300 | tree stmt, substmt; | |
12301 | bool error_suppress = false; | |
12302 | location_t loc; | |
12303 | ||
12304 | loc = c_parser_peek_token (parser)->location; | |
12305 | if (!c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>")) | |
12306 | { | |
12307 | /* Avoid skipping until the end of the block. */ | |
12308 | parser->error = false; | |
12309 | return NULL_TREE; | |
12310 | } | |
12311 | ||
12312 | stmt = push_stmt_list (); | |
12313 | ||
12314 | if (c_parser_peek_token (parser)->pragma_kind != PRAGMA_OMP_SECTION) | |
12315 | { | |
12316 | substmt = c_parser_omp_structured_block (parser); | |
12317 | substmt = build1 (OMP_SECTION, void_type_node, substmt); | |
12318 | SET_EXPR_LOCATION (substmt, loc); | |
12319 | add_stmt (substmt); | |
12320 | } | |
12321 | ||
12322 | while (1) | |
12323 | { | |
12324 | if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE)) | |
12325 | break; | |
12326 | if (c_parser_next_token_is (parser, CPP_EOF)) | |
12327 | break; | |
12328 | ||
12329 | loc = c_parser_peek_token (parser)->location; | |
12330 | if (c_parser_peek_token (parser)->pragma_kind == PRAGMA_OMP_SECTION) | |
12331 | { | |
12332 | c_parser_consume_pragma (parser); | |
12333 | c_parser_skip_to_pragma_eol (parser); | |
12334 | error_suppress = false; | |
12335 | } | |
12336 | else if (!error_suppress) | |
12337 | { | |
12338 | error_at (loc, "expected %<#pragma omp section%> or %<}%>"); | |
12339 | error_suppress = true; | |
12340 | } | |
12341 | ||
12342 | substmt = c_parser_omp_structured_block (parser); | |
12343 | substmt = build1 (OMP_SECTION, void_type_node, substmt); | |
12344 | SET_EXPR_LOCATION (substmt, loc); | |
12345 | add_stmt (substmt); | |
12346 | } | |
12347 | c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, | |
12348 | "expected %<#pragma omp section%> or %<}%>"); | |
12349 | ||
12350 | substmt = pop_stmt_list (stmt); | |
12351 | ||
12352 | stmt = make_node (OMP_SECTIONS); | |
12353 | SET_EXPR_LOCATION (stmt, sections_loc); | |
12354 | TREE_TYPE (stmt) = void_type_node; | |
12355 | OMP_SECTIONS_BODY (stmt) = substmt; | |
12356 | ||
12357 | return add_stmt (stmt); | |
953ff289 DN |
12358 | } |
12359 | ||
12360 | /* OpenMP 2.5: | |
acf0174b JJ |
12361 | # pragma omp sections sections-clause[optseq] newline |
12362 | sections-scope | |
c2255bc4 | 12363 | |
acf0174b JJ |
12364 | LOC is the location of the #pragma token. |
12365 | */ | |
12366 | ||
12367 | #define OMP_SECTIONS_CLAUSE_MASK \ | |
12368 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
12369 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
12370 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \ | |
12371 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
12372 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOWAIT)) | |
953ff289 DN |
12373 | |
12374 | static tree | |
acf0174b JJ |
12375 | c_parser_omp_sections (location_t loc, c_parser *parser, |
12376 | char *p_name, omp_clause_mask mask, tree *cclauses) | |
953ff289 | 12377 | { |
acf0174b | 12378 | tree block, clauses, ret; |
953ff289 | 12379 | |
acf0174b JJ |
12380 | strcat (p_name, " sections"); |
12381 | mask |= OMP_SECTIONS_CLAUSE_MASK; | |
12382 | if (cclauses) | |
12383 | mask &= ~(OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOWAIT); | |
12384 | ||
12385 | clauses = c_parser_omp_all_clauses (parser, mask, p_name, cclauses == NULL); | |
12386 | if (cclauses) | |
12387 | { | |
12388 | omp_split_clauses (loc, OMP_SECTIONS, mask, clauses, cclauses); | |
12389 | clauses = cclauses[C_OMP_CLAUSE_SPLIT_SECTIONS]; | |
12390 | } | |
12391 | ||
12392 | block = c_begin_compound_stmt (true); | |
12393 | ret = c_parser_omp_sections_scope (loc, parser); | |
12394 | if (ret) | |
12395 | OMP_SECTIONS_CLAUSES (ret) = clauses; | |
12396 | block = c_end_compound_stmt (loc, block, true); | |
12397 | add_stmt (block); | |
12398 | ||
12399 | return ret; | |
12400 | } | |
12401 | ||
12402 | /* OpenMP 2.5: | |
cef0fd0e TS |
12403 | # pragma omp parallel parallel-clause[optseq] new-line |
12404 | structured-block | |
12405 | # pragma omp parallel for parallel-for-clause[optseq] new-line | |
12406 | structured-block | |
12407 | # pragma omp parallel sections parallel-sections-clause[optseq] new-line | |
12408 | structured-block | |
12409 | ||
12410 | OpenMP 4.0: | |
12411 | # pragma omp parallel for simd parallel-for-simd-clause[optseq] new-line | |
12412 | structured-block | |
acf0174b JJ |
12413 | |
12414 | LOC is the location of the #pragma token. | |
12415 | */ | |
12416 | ||
12417 | #define OMP_PARALLEL_CLAUSE_MASK \ | |
12418 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF) \ | |
12419 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
12420 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
12421 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEFAULT) \ | |
12422 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SHARED) \ | |
12423 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COPYIN) \ | |
12424 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
12425 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NUM_THREADS) \ | |
12426 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PROC_BIND)) | |
12427 | ||
12428 | static tree | |
12429 | c_parser_omp_parallel (location_t loc, c_parser *parser, | |
12430 | char *p_name, omp_clause_mask mask, tree *cclauses) | |
12431 | { | |
12432 | tree stmt, clauses, block; | |
12433 | ||
12434 | strcat (p_name, " parallel"); | |
12435 | mask |= OMP_PARALLEL_CLAUSE_MASK; | |
12436 | ||
12437 | if (c_parser_next_token_is_keyword (parser, RID_FOR)) | |
953ff289 | 12438 | { |
acf0174b JJ |
12439 | tree cclauses_buf[C_OMP_CLAUSE_SPLIT_COUNT]; |
12440 | if (cclauses == NULL) | |
12441 | cclauses = cclauses_buf; | |
12442 | ||
953ff289 | 12443 | c_parser_consume_token (parser); |
6d7f7e0a TB |
12444 | if (!flag_openmp) /* flag_openmp_simd */ |
12445 | return c_parser_omp_for (loc, parser, p_name, mask, cclauses); | |
acf0174b | 12446 | block = c_begin_omp_parallel (); |
e162a134 | 12447 | tree ret = c_parser_omp_for (loc, parser, p_name, mask, cclauses); |
acf0174b JJ |
12448 | stmt |
12449 | = c_finish_omp_parallel (loc, cclauses[C_OMP_CLAUSE_SPLIT_PARALLEL], | |
12450 | block); | |
e162a134 JJ |
12451 | if (ret == NULL_TREE) |
12452 | return ret; | |
acf0174b JJ |
12453 | OMP_PARALLEL_COMBINED (stmt) = 1; |
12454 | return stmt; | |
12455 | } | |
12456 | else if (cclauses) | |
12457 | { | |
12458 | error_at (loc, "expected %<for%> after %qs", p_name); | |
12459 | c_parser_skip_to_pragma_eol (parser); | |
12460 | return NULL_TREE; | |
12461 | } | |
6d7f7e0a TB |
12462 | else if (!flag_openmp) /* flag_openmp_simd */ |
12463 | { | |
12464 | c_parser_skip_to_pragma_eol (parser); | |
12465 | return NULL_TREE; | |
12466 | } | |
acf0174b JJ |
12467 | else if (c_parser_next_token_is (parser, CPP_NAME)) |
12468 | { | |
12469 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
12470 | if (strcmp (p, "sections") == 0) | |
953ff289 | 12471 | { |
acf0174b JJ |
12472 | tree cclauses_buf[C_OMP_CLAUSE_SPLIT_COUNT]; |
12473 | if (cclauses == NULL) | |
12474 | cclauses = cclauses_buf; | |
12475 | ||
953ff289 | 12476 | c_parser_consume_token (parser); |
acf0174b JJ |
12477 | block = c_begin_omp_parallel (); |
12478 | c_parser_omp_sections (loc, parser, p_name, mask, cclauses); | |
12479 | stmt = c_finish_omp_parallel (loc, | |
12480 | cclauses[C_OMP_CLAUSE_SPLIT_PARALLEL], | |
12481 | block); | |
12482 | OMP_PARALLEL_COMBINED (stmt) = 1; | |
12483 | return stmt; | |
953ff289 | 12484 | } |
953ff289 | 12485 | } |
953ff289 | 12486 | |
acf0174b JJ |
12487 | clauses = c_parser_omp_all_clauses (parser, mask, p_name, cclauses == NULL); |
12488 | ||
12489 | block = c_begin_omp_parallel (); | |
12490 | c_parser_statement (parser); | |
12491 | stmt = c_finish_omp_parallel (loc, clauses, block); | |
12492 | ||
12493 | return stmt; | |
12494 | } | |
12495 | ||
12496 | /* OpenMP 2.5: | |
12497 | # pragma omp single single-clause[optseq] new-line | |
12498 | structured-block | |
12499 | ||
12500 | LOC is the location of the #pragma. | |
12501 | */ | |
12502 | ||
12503 | #define OMP_SINGLE_CLAUSE_MASK \ | |
12504 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
12505 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
12506 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COPYPRIVATE) \ | |
12507 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOWAIT)) | |
12508 | ||
12509 | static tree | |
12510 | c_parser_omp_single (location_t loc, c_parser *parser) | |
12511 | { | |
12512 | tree stmt = make_node (OMP_SINGLE); | |
12513 | SET_EXPR_LOCATION (stmt, loc); | |
12514 | TREE_TYPE (stmt) = void_type_node; | |
12515 | ||
12516 | OMP_SINGLE_CLAUSES (stmt) | |
12517 | = c_parser_omp_all_clauses (parser, OMP_SINGLE_CLAUSE_MASK, | |
12518 | "#pragma omp single"); | |
12519 | OMP_SINGLE_BODY (stmt) = c_parser_omp_structured_block (parser); | |
12520 | ||
12521 | return add_stmt (stmt); | |
12522 | } | |
12523 | ||
12524 | /* OpenMP 3.0: | |
12525 | # pragma omp task task-clause[optseq] new-line | |
12526 | ||
12527 | LOC is the location of the #pragma. | |
12528 | */ | |
12529 | ||
12530 | #define OMP_TASK_CLAUSE_MASK \ | |
12531 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF) \ | |
12532 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_UNTIED) \ | |
12533 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEFAULT) \ | |
12534 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
12535 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
12536 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SHARED) \ | |
12537 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FINAL) \ | |
12538 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_MERGEABLE) \ | |
12539 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEPEND)) | |
12540 | ||
12541 | static tree | |
12542 | c_parser_omp_task (location_t loc, c_parser *parser) | |
12543 | { | |
12544 | tree clauses, block; | |
12545 | ||
12546 | clauses = c_parser_omp_all_clauses (parser, OMP_TASK_CLAUSE_MASK, | |
12547 | "#pragma omp task"); | |
12548 | ||
12549 | block = c_begin_omp_task (); | |
12550 | c_parser_statement (parser); | |
12551 | return c_finish_omp_task (loc, clauses, block); | |
953ff289 DN |
12552 | } |
12553 | ||
acf0174b JJ |
12554 | /* OpenMP 3.0: |
12555 | # pragma omp taskwait new-line | |
12556 | */ | |
953ff289 DN |
12557 | |
12558 | static void | |
acf0174b | 12559 | c_parser_omp_taskwait (c_parser *parser) |
953ff289 | 12560 | { |
c2255bc4 | 12561 | location_t loc = c_parser_peek_token (parser)->location; |
953ff289 | 12562 | c_parser_consume_pragma (parser); |
953ff289 DN |
12563 | c_parser_skip_to_pragma_eol (parser); |
12564 | ||
acf0174b | 12565 | c_finish_omp_taskwait (loc); |
953ff289 DN |
12566 | } |
12567 | ||
acf0174b JJ |
12568 | /* OpenMP 3.1: |
12569 | # pragma omp taskyield new-line | |
12570 | */ | |
953ff289 | 12571 | |
acf0174b JJ |
12572 | static void |
12573 | c_parser_omp_taskyield (c_parser *parser) | |
953ff289 | 12574 | { |
acf0174b JJ |
12575 | location_t loc = c_parser_peek_token (parser)->location; |
12576 | c_parser_consume_pragma (parser); | |
12577 | c_parser_skip_to_pragma_eol (parser); | |
a68ab351 | 12578 | |
acf0174b JJ |
12579 | c_finish_omp_taskyield (loc); |
12580 | } | |
3ba09659 | 12581 | |
acf0174b JJ |
12582 | /* OpenMP 4.0: |
12583 | # pragma omp taskgroup new-line | |
12584 | */ | |
953ff289 | 12585 | |
acf0174b JJ |
12586 | static tree |
12587 | c_parser_omp_taskgroup (c_parser *parser) | |
12588 | { | |
12589 | location_t loc = c_parser_peek_token (parser)->location; | |
12590 | c_parser_skip_to_pragma_eol (parser); | |
12591 | return c_finish_omp_taskgroup (loc, c_parser_omp_structured_block (parser)); | |
12592 | } | |
c9f9eb5d | 12593 | |
acf0174b JJ |
12594 | /* OpenMP 4.0: |
12595 | # pragma omp cancel cancel-clause[optseq] new-line | |
953ff289 | 12596 | |
acf0174b JJ |
12597 | LOC is the location of the #pragma. |
12598 | */ | |
a68ab351 | 12599 | |
acf0174b JJ |
12600 | #define OMP_CANCEL_CLAUSE_MASK \ |
12601 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PARALLEL) \ | |
12602 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FOR) \ | |
12603 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SECTIONS) \ | |
12604 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_TASKGROUP) \ | |
12605 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF)) | |
a68ab351 | 12606 | |
acf0174b JJ |
12607 | static void |
12608 | c_parser_omp_cancel (c_parser *parser) | |
12609 | { | |
12610 | location_t loc = c_parser_peek_token (parser)->location; | |
a68ab351 | 12611 | |
acf0174b JJ |
12612 | c_parser_consume_pragma (parser); |
12613 | tree clauses = c_parser_omp_all_clauses (parser, OMP_CANCEL_CLAUSE_MASK, | |
12614 | "#pragma omp cancel"); | |
953ff289 | 12615 | |
acf0174b JJ |
12616 | c_finish_omp_cancel (loc, clauses); |
12617 | } | |
953ff289 | 12618 | |
acf0174b JJ |
12619 | /* OpenMP 4.0: |
12620 | # pragma omp cancellation point cancelpt-clause[optseq] new-line | |
953ff289 | 12621 | |
acf0174b JJ |
12622 | LOC is the location of the #pragma. |
12623 | */ | |
953ff289 | 12624 | |
acf0174b JJ |
12625 | #define OMP_CANCELLATION_POINT_CLAUSE_MASK \ |
12626 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PARALLEL) \ | |
12627 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FOR) \ | |
12628 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SECTIONS) \ | |
12629 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_TASKGROUP)) | |
a68ab351 | 12630 | |
acf0174b JJ |
12631 | static void |
12632 | c_parser_omp_cancellation_point (c_parser *parser) | |
12633 | { | |
12634 | location_t loc = c_parser_peek_token (parser)->location; | |
12635 | tree clauses; | |
12636 | bool point_seen = false; | |
12637 | ||
12638 | c_parser_consume_pragma (parser); | |
12639 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
a68ab351 | 12640 | { |
acf0174b JJ |
12641 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); |
12642 | if (strcmp (p, "point") == 0) | |
a68ab351 | 12643 | { |
acf0174b JJ |
12644 | c_parser_consume_token (parser); |
12645 | point_seen = true; | |
a68ab351 | 12646 | } |
a68ab351 | 12647 | } |
acf0174b | 12648 | if (!point_seen) |
a68ab351 | 12649 | { |
acf0174b JJ |
12650 | c_parser_error (parser, "expected %<point%>"); |
12651 | c_parser_skip_to_pragma_eol (parser); | |
12652 | return; | |
a68ab351 | 12653 | } |
953ff289 | 12654 | |
acf0174b JJ |
12655 | clauses |
12656 | = c_parser_omp_all_clauses (parser, OMP_CANCELLATION_POINT_CLAUSE_MASK, | |
12657 | "#pragma omp cancellation point"); | |
c2255bc4 | 12658 | |
acf0174b JJ |
12659 | c_finish_omp_cancellation_point (loc, clauses); |
12660 | } | |
953ff289 | 12661 | |
acf0174b JJ |
12662 | /* OpenMP 4.0: |
12663 | #pragma omp distribute distribute-clause[optseq] new-line | |
12664 | for-loop */ | |
12665 | ||
12666 | #define OMP_DISTRIBUTE_CLAUSE_MASK \ | |
12667 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
12668 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
12669 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DIST_SCHEDULE)\ | |
12670 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COLLAPSE)) | |
953ff289 DN |
12671 | |
12672 | static tree | |
acf0174b JJ |
12673 | c_parser_omp_distribute (location_t loc, c_parser *parser, |
12674 | char *p_name, omp_clause_mask mask, tree *cclauses) | |
953ff289 | 12675 | { |
acf0174b JJ |
12676 | tree clauses, block, ret; |
12677 | ||
12678 | strcat (p_name, " distribute"); | |
12679 | mask |= OMP_DISTRIBUTE_CLAUSE_MASK; | |
12680 | ||
12681 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
12682 | { | |
12683 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
12684 | bool simd = false; | |
12685 | bool parallel = false; | |
12686 | ||
12687 | if (strcmp (p, "simd") == 0) | |
12688 | simd = true; | |
12689 | else | |
12690 | parallel = strcmp (p, "parallel") == 0; | |
12691 | if (parallel || simd) | |
12692 | { | |
12693 | tree cclauses_buf[C_OMP_CLAUSE_SPLIT_COUNT]; | |
12694 | if (cclauses == NULL) | |
12695 | cclauses = cclauses_buf; | |
12696 | c_parser_consume_token (parser); | |
6d7f7e0a TB |
12697 | if (!flag_openmp) /* flag_openmp_simd */ |
12698 | { | |
12699 | if (simd) | |
12700 | return c_parser_omp_simd (loc, parser, p_name, mask, cclauses); | |
12701 | else | |
12702 | return c_parser_omp_parallel (loc, parser, p_name, mask, | |
12703 | cclauses); | |
12704 | } | |
acf0174b JJ |
12705 | block = c_begin_compound_stmt (true); |
12706 | if (simd) | |
12707 | ret = c_parser_omp_simd (loc, parser, p_name, mask, cclauses); | |
12708 | else | |
12709 | ret = c_parser_omp_parallel (loc, parser, p_name, mask, cclauses); | |
12710 | block = c_end_compound_stmt (loc, block, true); | |
12711 | if (ret == NULL) | |
12712 | return ret; | |
12713 | ret = make_node (OMP_DISTRIBUTE); | |
12714 | TREE_TYPE (ret) = void_type_node; | |
12715 | OMP_FOR_BODY (ret) = block; | |
12716 | OMP_FOR_CLAUSES (ret) = cclauses[C_OMP_CLAUSE_SPLIT_DISTRIBUTE]; | |
12717 | SET_EXPR_LOCATION (ret, loc); | |
12718 | add_stmt (ret); | |
12719 | return ret; | |
12720 | } | |
12721 | } | |
6d7f7e0a TB |
12722 | if (!flag_openmp) /* flag_openmp_simd */ |
12723 | { | |
12724 | c_parser_skip_to_pragma_eol (parser); | |
12725 | return NULL_TREE; | |
12726 | } | |
953ff289 | 12727 | |
acf0174b JJ |
12728 | clauses = c_parser_omp_all_clauses (parser, mask, p_name, cclauses == NULL); |
12729 | if (cclauses) | |
12730 | { | |
12731 | omp_split_clauses (loc, OMP_DISTRIBUTE, mask, clauses, cclauses); | |
12732 | clauses = cclauses[C_OMP_CLAUSE_SPLIT_DISTRIBUTE]; | |
12733 | } | |
953ff289 DN |
12734 | |
12735 | block = c_begin_compound_stmt (true); | |
acf0174b | 12736 | ret = c_parser_omp_for_loop (loc, parser, OMP_DISTRIBUTE, clauses, NULL); |
c2255bc4 | 12737 | block = c_end_compound_stmt (loc, block, true); |
953ff289 DN |
12738 | add_stmt (block); |
12739 | ||
12740 | return ret; | |
12741 | } | |
12742 | ||
acf0174b JJ |
12743 | /* OpenMP 4.0: |
12744 | # pragma omp teams teams-clause[optseq] new-line | |
12745 | structured-block */ | |
c2255bc4 | 12746 | |
acf0174b JJ |
12747 | #define OMP_TEAMS_CLAUSE_MASK \ |
12748 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \ | |
12749 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \ | |
12750 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SHARED) \ | |
12751 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \ | |
12752 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NUM_TEAMS) \ | |
12753 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_THREAD_LIMIT) \ | |
12754 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEFAULT)) | |
953ff289 DN |
12755 | |
12756 | static tree | |
acf0174b JJ |
12757 | c_parser_omp_teams (location_t loc, c_parser *parser, |
12758 | char *p_name, omp_clause_mask mask, tree *cclauses) | |
953ff289 | 12759 | { |
acf0174b JJ |
12760 | tree clauses, block, ret; |
12761 | ||
12762 | strcat (p_name, " teams"); | |
12763 | mask |= OMP_TEAMS_CLAUSE_MASK; | |
12764 | ||
12765 | if (c_parser_next_token_is (parser, CPP_NAME)) | |
12766 | { | |
12767 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
12768 | if (strcmp (p, "distribute") == 0) | |
12769 | { | |
12770 | tree cclauses_buf[C_OMP_CLAUSE_SPLIT_COUNT]; | |
12771 | if (cclauses == NULL) | |
12772 | cclauses = cclauses_buf; | |
12773 | ||
12774 | c_parser_consume_token (parser); | |
6d7f7e0a TB |
12775 | if (!flag_openmp) /* flag_openmp_simd */ |
12776 | return c_parser_omp_distribute (loc, parser, p_name, mask, cclauses); | |
acf0174b JJ |
12777 | block = c_begin_compound_stmt (true); |
12778 | ret = c_parser_omp_distribute (loc, parser, p_name, mask, cclauses); | |
12779 | block = c_end_compound_stmt (loc, block, true); | |
12780 | if (ret == NULL) | |
12781 | return ret; | |
12782 | clauses = cclauses[C_OMP_CLAUSE_SPLIT_TEAMS]; | |
12783 | ret = make_node (OMP_TEAMS); | |
12784 | TREE_TYPE (ret) = void_type_node; | |
12785 | OMP_TEAMS_CLAUSES (ret) = clauses; | |
12786 | OMP_TEAMS_BODY (ret) = block; | |
12787 | return add_stmt (ret); | |
12788 | } | |
12789 | } | |
6d7f7e0a TB |
12790 | if (!flag_openmp) /* flag_openmp_simd */ |
12791 | { | |
12792 | c_parser_skip_to_pragma_eol (parser); | |
12793 | return NULL_TREE; | |
12794 | } | |
acf0174b JJ |
12795 | |
12796 | clauses = c_parser_omp_all_clauses (parser, mask, p_name, cclauses == NULL); | |
12797 | if (cclauses) | |
12798 | { | |
12799 | omp_split_clauses (loc, OMP_TEAMS, mask, clauses, cclauses); | |
12800 | clauses = cclauses[C_OMP_CLAUSE_SPLIT_TEAMS]; | |
12801 | } | |
12802 | ||
12803 | tree stmt = make_node (OMP_TEAMS); | |
12804 | TREE_TYPE (stmt) = void_type_node; | |
12805 | OMP_TEAMS_CLAUSES (stmt) = clauses; | |
12806 | OMP_TEAMS_BODY (stmt) = c_parser_omp_structured_block (parser); | |
12807 | ||
12808 | return add_stmt (stmt); | |
953ff289 DN |
12809 | } |
12810 | ||
acf0174b JJ |
12811 | /* OpenMP 4.0: |
12812 | # pragma omp target data target-data-clause[optseq] new-line | |
12813 | structured-block */ | |
c2255bc4 | 12814 | |
acf0174b JJ |
12815 | #define OMP_TARGET_DATA_CLAUSE_MASK \ |
12816 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEVICE) \ | |
12817 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_MAP) \ | |
12818 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF)) | |
953ff289 DN |
12819 | |
12820 | static tree | |
acf0174b | 12821 | c_parser_omp_target_data (location_t loc, c_parser *parser) |
953ff289 | 12822 | { |
acf0174b JJ |
12823 | tree stmt = make_node (OMP_TARGET_DATA); |
12824 | TREE_TYPE (stmt) = void_type_node; | |
953ff289 | 12825 | |
acf0174b JJ |
12826 | OMP_TARGET_DATA_CLAUSES (stmt) |
12827 | = c_parser_omp_all_clauses (parser, OMP_TARGET_DATA_CLAUSE_MASK, | |
12828 | "#pragma omp target data"); | |
12829 | keep_next_level (); | |
12830 | tree block = c_begin_compound_stmt (true); | |
12831 | add_stmt (c_parser_omp_structured_block (parser)); | |
12832 | OMP_TARGET_DATA_BODY (stmt) = c_end_compound_stmt (loc, block, true); | |
953ff289 | 12833 | |
acf0174b JJ |
12834 | SET_EXPR_LOCATION (stmt, loc); |
12835 | return add_stmt (stmt); | |
12836 | } | |
953ff289 | 12837 | |
acf0174b JJ |
12838 | /* OpenMP 4.0: |
12839 | # pragma omp target update target-update-clause[optseq] new-line */ | |
c2255bc4 | 12840 | |
acf0174b JJ |
12841 | #define OMP_TARGET_UPDATE_CLAUSE_MASK \ |
12842 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FROM) \ | |
12843 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_TO) \ | |
12844 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEVICE) \ | |
12845 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF)) | |
953ff289 | 12846 | |
acf0174b JJ |
12847 | static bool |
12848 | c_parser_omp_target_update (location_t loc, c_parser *parser, | |
12849 | enum pragma_context context) | |
953ff289 | 12850 | { |
acf0174b JJ |
12851 | if (context == pragma_stmt) |
12852 | { | |
12853 | error_at (loc, | |
12854 | "%<#pragma omp target update%> may only be " | |
12855 | "used in compound statements"); | |
12856 | c_parser_skip_to_pragma_eol (parser); | |
12857 | return false; | |
12858 | } | |
953ff289 | 12859 | |
acf0174b JJ |
12860 | tree clauses |
12861 | = c_parser_omp_all_clauses (parser, OMP_TARGET_UPDATE_CLAUSE_MASK, | |
12862 | "#pragma omp target update"); | |
12863 | if (find_omp_clause (clauses, OMP_CLAUSE_TO) == NULL_TREE | |
12864 | && find_omp_clause (clauses, OMP_CLAUSE_FROM) == NULL_TREE) | |
953ff289 | 12865 | { |
acf0174b JJ |
12866 | error_at (loc, |
12867 | "%<#pragma omp target update must contain at least one " | |
12868 | "%<from%> or %<to%> clauses"); | |
12869 | return false; | |
953ff289 DN |
12870 | } |
12871 | ||
acf0174b JJ |
12872 | tree stmt = make_node (OMP_TARGET_UPDATE); |
12873 | TREE_TYPE (stmt) = void_type_node; | |
12874 | OMP_TARGET_UPDATE_CLAUSES (stmt) = clauses; | |
12875 | SET_EXPR_LOCATION (stmt, loc); | |
12876 | add_stmt (stmt); | |
12877 | return false; | |
12878 | } | |
953ff289 | 12879 | |
acf0174b JJ |
12880 | /* OpenMP 4.0: |
12881 | # pragma omp target target-clause[optseq] new-line | |
12882 | structured-block */ | |
953ff289 | 12883 | |
acf0174b JJ |
12884 | #define OMP_TARGET_CLAUSE_MASK \ |
12885 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEVICE) \ | |
12886 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_MAP) \ | |
12887 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF)) | |
953ff289 | 12888 | |
acf0174b JJ |
12889 | static bool |
12890 | c_parser_omp_target (c_parser *parser, enum pragma_context context) | |
12891 | { | |
12892 | location_t loc = c_parser_peek_token (parser)->location; | |
12893 | c_parser_consume_pragma (parser); | |
953ff289 | 12894 | |
acf0174b JJ |
12895 | if (context != pragma_stmt && context != pragma_compound) |
12896 | { | |
12897 | c_parser_error (parser, "expected declaration specifiers"); | |
12898 | c_parser_skip_to_pragma_eol (parser); | |
12899 | return false; | |
953ff289 DN |
12900 | } |
12901 | ||
acf0174b | 12902 | if (c_parser_next_token_is (parser, CPP_NAME)) |
953ff289 | 12903 | { |
acf0174b | 12904 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); |
953ff289 | 12905 | |
6d7f7e0a | 12906 | if (strcmp (p, "teams") == 0) |
acf0174b JJ |
12907 | { |
12908 | tree cclauses[C_OMP_CLAUSE_SPLIT_COUNT]; | |
12909 | char p_name[sizeof ("#pragma omp target teams distribute " | |
12910 | "parallel for simd")]; | |
953ff289 | 12911 | |
acf0174b | 12912 | c_parser_consume_token (parser); |
e7bd1de1 | 12913 | strcpy (p_name, "#pragma omp target"); |
6d7f7e0a | 12914 | if (!flag_openmp) /* flag_openmp_simd */ |
edbba2ce TS |
12915 | { |
12916 | tree stmt = c_parser_omp_teams (loc, parser, p_name, | |
12917 | OMP_TARGET_CLAUSE_MASK, | |
12918 | cclauses); | |
12919 | return stmt != NULL_TREE; | |
12920 | } | |
acf0174b JJ |
12921 | keep_next_level (); |
12922 | tree block = c_begin_compound_stmt (true); | |
12923 | tree ret = c_parser_omp_teams (loc, parser, p_name, | |
12924 | OMP_TARGET_CLAUSE_MASK, cclauses); | |
12925 | block = c_end_compound_stmt (loc, block, true); | |
edbba2ce TS |
12926 | if (ret == NULL_TREE) |
12927 | return false; | |
acf0174b JJ |
12928 | tree stmt = make_node (OMP_TARGET); |
12929 | TREE_TYPE (stmt) = void_type_node; | |
12930 | OMP_TARGET_CLAUSES (stmt) = cclauses[C_OMP_CLAUSE_SPLIT_TARGET]; | |
12931 | OMP_TARGET_BODY (stmt) = block; | |
12932 | add_stmt (stmt); | |
12933 | return true; | |
12934 | } | |
6d7f7e0a TB |
12935 | else if (!flag_openmp) /* flag_openmp_simd */ |
12936 | { | |
12937 | c_parser_skip_to_pragma_eol (parser); | |
edbba2ce | 12938 | return false; |
6d7f7e0a TB |
12939 | } |
12940 | else if (strcmp (p, "data") == 0) | |
12941 | { | |
12942 | c_parser_consume_token (parser); | |
12943 | c_parser_omp_target_data (loc, parser); | |
12944 | return true; | |
12945 | } | |
12946 | else if (strcmp (p, "update") == 0) | |
12947 | { | |
12948 | c_parser_consume_token (parser); | |
12949 | return c_parser_omp_target_update (loc, parser, context); | |
12950 | } | |
953ff289 | 12951 | } |
953ff289 | 12952 | |
acf0174b | 12953 | tree stmt = make_node (OMP_TARGET); |
953ff289 | 12954 | TREE_TYPE (stmt) = void_type_node; |
953ff289 | 12955 | |
acf0174b JJ |
12956 | OMP_TARGET_CLAUSES (stmt) |
12957 | = c_parser_omp_all_clauses (parser, OMP_TARGET_CLAUSE_MASK, | |
12958 | "#pragma omp target"); | |
12959 | keep_next_level (); | |
12960 | tree block = c_begin_compound_stmt (true); | |
12961 | add_stmt (c_parser_omp_structured_block (parser)); | |
12962 | OMP_TARGET_BODY (stmt) = c_end_compound_stmt (loc, block, true); | |
12963 | ||
12964 | SET_EXPR_LOCATION (stmt, loc); | |
12965 | add_stmt (stmt); | |
12966 | return true; | |
12967 | } | |
12968 | ||
12969 | /* OpenMP 4.0: | |
12970 | # pragma omp declare simd declare-simd-clauses[optseq] new-line */ | |
12971 | ||
12972 | #define OMP_DECLARE_SIMD_CLAUSE_MASK \ | |
12973 | ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SIMDLEN) \ | |
12974 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LINEAR) \ | |
12975 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_ALIGNED) \ | |
12976 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_UNIFORM) \ | |
12977 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_INBRANCH) \ | |
12978 | | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOTINBRANCH)) | |
12979 | ||
12980 | static void | |
12981 | c_parser_omp_declare_simd (c_parser *parser, enum pragma_context context) | |
12982 | { | |
12983 | vec<c_token> clauses = vNULL; | |
12984 | while (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
12985 | { | |
12986 | c_token *token = c_parser_peek_token (parser); | |
12987 | if (token->type == CPP_EOF) | |
12988 | { | |
12989 | c_parser_skip_to_pragma_eol (parser); | |
12990 | clauses.release (); | |
12991 | return; | |
12992 | } | |
12993 | clauses.safe_push (*token); | |
12994 | c_parser_consume_token (parser); | |
12995 | } | |
12996 | clauses.safe_push (*c_parser_peek_token (parser)); | |
12997 | c_parser_skip_to_pragma_eol (parser); | |
12998 | ||
12999 | while (c_parser_next_token_is (parser, CPP_PRAGMA)) | |
13000 | { | |
13001 | if (c_parser_peek_token (parser)->pragma_kind | |
13002 | != PRAGMA_OMP_DECLARE_REDUCTION | |
13003 | || c_parser_peek_2nd_token (parser)->type != CPP_NAME | |
13004 | || strcmp (IDENTIFIER_POINTER | |
13005 | (c_parser_peek_2nd_token (parser)->value), | |
13006 | "simd") != 0) | |
13007 | { | |
13008 | c_parser_error (parser, | |
13009 | "%<#pragma omp declare simd%> must be followed by " | |
13010 | "function declaration or definition or another " | |
13011 | "%<#pragma omp declare simd%>"); | |
13012 | clauses.release (); | |
13013 | return; | |
13014 | } | |
13015 | c_parser_consume_pragma (parser); | |
13016 | while (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
13017 | { | |
13018 | c_token *token = c_parser_peek_token (parser); | |
13019 | if (token->type == CPP_EOF) | |
13020 | { | |
13021 | c_parser_skip_to_pragma_eol (parser); | |
13022 | clauses.release (); | |
13023 | return; | |
13024 | } | |
13025 | clauses.safe_push (*token); | |
13026 | c_parser_consume_token (parser); | |
13027 | } | |
13028 | clauses.safe_push (*c_parser_peek_token (parser)); | |
13029 | c_parser_skip_to_pragma_eol (parser); | |
13030 | } | |
13031 | ||
13032 | /* Make sure nothing tries to read past the end of the tokens. */ | |
13033 | c_token eof_token; | |
13034 | memset (&eof_token, 0, sizeof (eof_token)); | |
13035 | eof_token.type = CPP_EOF; | |
13036 | clauses.safe_push (eof_token); | |
13037 | clauses.safe_push (eof_token); | |
13038 | ||
13039 | switch (context) | |
13040 | { | |
13041 | case pragma_external: | |
13042 | if (c_parser_next_token_is (parser, CPP_KEYWORD) | |
13043 | && c_parser_peek_token (parser)->keyword == RID_EXTENSION) | |
13044 | { | |
13045 | int ext = disable_extension_diagnostics (); | |
13046 | do | |
13047 | c_parser_consume_token (parser); | |
13048 | while (c_parser_next_token_is (parser, CPP_KEYWORD) | |
13049 | && c_parser_peek_token (parser)->keyword == RID_EXTENSION); | |
13050 | c_parser_declaration_or_fndef (parser, true, true, true, false, true, | |
13051 | NULL, clauses); | |
13052 | restore_extension_diagnostics (ext); | |
13053 | } | |
13054 | else | |
13055 | c_parser_declaration_or_fndef (parser, true, true, true, false, true, | |
13056 | NULL, clauses); | |
13057 | break; | |
13058 | case pragma_struct: | |
13059 | case pragma_param: | |
13060 | c_parser_error (parser, "%<#pragma omp declare simd%> must be followed by " | |
13061 | "function declaration or definition"); | |
13062 | break; | |
13063 | case pragma_compound: | |
13064 | case pragma_stmt: | |
13065 | if (c_parser_next_token_is (parser, CPP_KEYWORD) | |
13066 | && c_parser_peek_token (parser)->keyword == RID_EXTENSION) | |
13067 | { | |
13068 | int ext = disable_extension_diagnostics (); | |
13069 | do | |
13070 | c_parser_consume_token (parser); | |
13071 | while (c_parser_next_token_is (parser, CPP_KEYWORD) | |
13072 | && c_parser_peek_token (parser)->keyword == RID_EXTENSION); | |
13073 | if (c_parser_next_tokens_start_declaration (parser)) | |
13074 | { | |
13075 | c_parser_declaration_or_fndef (parser, true, true, true, true, | |
13076 | true, NULL, clauses); | |
13077 | restore_extension_diagnostics (ext); | |
13078 | break; | |
13079 | } | |
13080 | restore_extension_diagnostics (ext); | |
13081 | } | |
13082 | else if (c_parser_next_tokens_start_declaration (parser)) | |
13083 | { | |
13084 | c_parser_declaration_or_fndef (parser, true, true, true, true, true, | |
13085 | NULL, clauses); | |
13086 | break; | |
13087 | } | |
13088 | c_parser_error (parser, "%<#pragma omp declare simd%> must be followed by " | |
13089 | "function declaration or definition"); | |
13090 | break; | |
13091 | default: | |
13092 | gcc_unreachable (); | |
13093 | } | |
13094 | clauses.release (); | |
953ff289 DN |
13095 | } |
13096 | ||
acf0174b JJ |
13097 | /* Finalize #pragma omp declare simd clauses after FNDECL has been parsed, |
13098 | and put that into "omp declare simd" attribute. */ | |
c2255bc4 | 13099 | |
acf0174b JJ |
13100 | static void |
13101 | c_finish_omp_declare_simd (c_parser *parser, tree fndecl, tree parms, | |
13102 | vec<c_token> clauses) | |
13103 | { | |
b72271b9 | 13104 | if (flag_cilkplus |
41958c28 BI |
13105 | && clauses.exists () && !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) |
13106 | { | |
13107 | error ("%<#pragma omp declare simd%> cannot be used in the same " | |
13108 | "function marked as a Cilk Plus SIMD-enabled function"); | |
13109 | vec_free (parser->cilk_simd_fn_tokens); | |
13110 | return; | |
13111 | } | |
13112 | ||
acf0174b JJ |
13113 | /* Normally first token is CPP_NAME "simd". CPP_EOF there indicates |
13114 | error has been reported and CPP_PRAGMA that c_finish_omp_declare_simd | |
13115 | has already processed the tokens. */ | |
41958c28 | 13116 | if (clauses.exists () && clauses[0].type == CPP_EOF) |
acf0174b JJ |
13117 | return; |
13118 | if (fndecl == NULL_TREE || TREE_CODE (fndecl) != FUNCTION_DECL) | |
13119 | { | |
13120 | error ("%<#pragma omp declare simd%> not immediately followed by " | |
13121 | "a function declaration or definition"); | |
13122 | clauses[0].type = CPP_EOF; | |
13123 | return; | |
13124 | } | |
41958c28 | 13125 | if (clauses.exists () && clauses[0].type != CPP_NAME) |
acf0174b JJ |
13126 | { |
13127 | error_at (DECL_SOURCE_LOCATION (fndecl), | |
13128 | "%<#pragma omp declare simd%> not immediately followed by " | |
13129 | "a single function declaration or definition"); | |
13130 | clauses[0].type = CPP_EOF; | |
13131 | return; | |
13132 | } | |
953ff289 | 13133 | |
acf0174b JJ |
13134 | if (parms == NULL_TREE) |
13135 | parms = DECL_ARGUMENTS (fndecl); | |
953ff289 | 13136 | |
acf0174b JJ |
13137 | unsigned int tokens_avail = parser->tokens_avail; |
13138 | gcc_assert (parser->tokens == &parser->tokens_buf[0]); | |
41958c28 BI |
13139 | bool is_cilkplus_cilk_simd_fn = false; |
13140 | ||
b72271b9 | 13141 | if (flag_cilkplus && !vec_safe_is_empty (parser->cilk_simd_fn_tokens)) |
41958c28 BI |
13142 | { |
13143 | parser->tokens = parser->cilk_simd_fn_tokens->address (); | |
13144 | parser->tokens_avail = vec_safe_length (parser->cilk_simd_fn_tokens); | |
13145 | is_cilkplus_cilk_simd_fn = true; | |
13146 | } | |
13147 | else | |
13148 | { | |
13149 | parser->tokens = clauses.address (); | |
13150 | parser->tokens_avail = clauses.length (); | |
13151 | } | |
13152 | ||
acf0174b JJ |
13153 | /* c_parser_omp_declare_simd pushed 2 extra CPP_EOF tokens at the end. */ |
13154 | while (parser->tokens_avail > 3) | |
13155 | { | |
13156 | c_token *token = c_parser_peek_token (parser); | |
41958c28 BI |
13157 | if (!is_cilkplus_cilk_simd_fn) |
13158 | gcc_assert (token->type == CPP_NAME | |
13159 | && strcmp (IDENTIFIER_POINTER (token->value), "simd") == 0); | |
13160 | else | |
13161 | gcc_assert (token->type == CPP_NAME | |
13162 | && is_cilkplus_vector_p (token->value)); | |
acf0174b JJ |
13163 | c_parser_consume_token (parser); |
13164 | parser->in_pragma = true; | |
953ff289 | 13165 | |
41958c28 BI |
13166 | tree c = NULL_TREE; |
13167 | if (is_cilkplus_cilk_simd_fn) | |
13168 | c = c_parser_omp_all_clauses (parser, CILK_SIMD_FN_CLAUSE_MASK, | |
13169 | "SIMD-enabled functions attribute"); | |
13170 | else | |
13171 | c = c_parser_omp_all_clauses (parser, OMP_DECLARE_SIMD_CLAUSE_MASK, | |
13172 | "#pragma omp declare simd"); | |
acf0174b JJ |
13173 | c = c_omp_declare_simd_clauses_to_numbers (parms, c); |
13174 | if (c != NULL_TREE) | |
13175 | c = tree_cons (NULL_TREE, c, NULL_TREE); | |
41958c28 BI |
13176 | if (is_cilkplus_cilk_simd_fn) |
13177 | { | |
74558dd9 BI |
13178 | tree k = build_tree_list (get_identifier ("cilk simd function"), |
13179 | NULL_TREE); | |
41958c28 BI |
13180 | TREE_CHAIN (k) = DECL_ATTRIBUTES (fndecl); |
13181 | DECL_ATTRIBUTES (fndecl) = k; | |
13182 | } | |
acf0174b JJ |
13183 | c = build_tree_list (get_identifier ("omp declare simd"), c); |
13184 | TREE_CHAIN (c) = DECL_ATTRIBUTES (fndecl); | |
13185 | DECL_ATTRIBUTES (fndecl) = c; | |
13186 | } | |
953ff289 | 13187 | |
acf0174b JJ |
13188 | parser->tokens = &parser->tokens_buf[0]; |
13189 | parser->tokens_avail = tokens_avail; | |
41958c28 BI |
13190 | if (clauses.exists ()) |
13191 | clauses[0].type = CPP_PRAGMA; | |
13192 | ||
13193 | if (!vec_safe_is_empty (parser->cilk_simd_fn_tokens)) | |
13194 | vec_free (parser->cilk_simd_fn_tokens); | |
953ff289 DN |
13195 | } |
13196 | ||
953ff289 | 13197 | |
acf0174b JJ |
13198 | /* OpenMP 4.0: |
13199 | # pragma omp declare target new-line | |
13200 | declarations and definitions | |
13201 | # pragma omp end declare target new-line */ | |
953ff289 | 13202 | |
acf0174b JJ |
13203 | static void |
13204 | c_parser_omp_declare_target (c_parser *parser) | |
953ff289 | 13205 | { |
acf0174b JJ |
13206 | c_parser_skip_to_pragma_eol (parser); |
13207 | current_omp_declare_target_attribute++; | |
13208 | } | |
953ff289 | 13209 | |
acf0174b JJ |
13210 | static void |
13211 | c_parser_omp_end_declare_target (c_parser *parser) | |
13212 | { | |
13213 | location_t loc = c_parser_peek_token (parser)->location; | |
13214 | c_parser_consume_pragma (parser); | |
13215 | if (c_parser_next_token_is (parser, CPP_NAME) | |
13216 | && strcmp (IDENTIFIER_POINTER (c_parser_peek_token (parser)->value), | |
13217 | "declare") == 0) | |
953ff289 DN |
13218 | { |
13219 | c_parser_consume_token (parser); | |
acf0174b JJ |
13220 | if (c_parser_next_token_is (parser, CPP_NAME) |
13221 | && strcmp (IDENTIFIER_POINTER (c_parser_peek_token (parser)->value), | |
13222 | "target") == 0) | |
13223 | c_parser_consume_token (parser); | |
13224 | else | |
953ff289 | 13225 | { |
acf0174b JJ |
13226 | c_parser_error (parser, "expected %<target%>"); |
13227 | c_parser_skip_to_pragma_eol (parser); | |
13228 | return; | |
953ff289 DN |
13229 | } |
13230 | } | |
acf0174b JJ |
13231 | else |
13232 | { | |
13233 | c_parser_error (parser, "expected %<declare%>"); | |
13234 | c_parser_skip_to_pragma_eol (parser); | |
13235 | return; | |
13236 | } | |
13237 | c_parser_skip_to_pragma_eol (parser); | |
13238 | if (!current_omp_declare_target_attribute) | |
13239 | error_at (loc, "%<#pragma omp end declare target%> without corresponding " | |
13240 | "%<#pragma omp declare target%>"); | |
13241 | else | |
13242 | current_omp_declare_target_attribute--; | |
13243 | } | |
953ff289 | 13244 | |
953ff289 | 13245 | |
acf0174b JJ |
13246 | /* OpenMP 4.0 |
13247 | #pragma omp declare reduction (reduction-id : typename-list : expression) \ | |
13248 | initializer-clause[opt] new-line | |
13249 | ||
13250 | initializer-clause: | |
13251 | initializer (omp_priv = initializer) | |
13252 | initializer (function-name (argument-list)) */ | |
13253 | ||
13254 | static void | |
13255 | c_parser_omp_declare_reduction (c_parser *parser, enum pragma_context context) | |
13256 | { | |
13257 | unsigned int tokens_avail = 0, i; | |
13258 | vec<tree> types = vNULL; | |
13259 | vec<c_token> clauses = vNULL; | |
13260 | enum tree_code reduc_code = ERROR_MARK; | |
13261 | tree reduc_id = NULL_TREE; | |
13262 | tree type; | |
13263 | location_t rloc = c_parser_peek_token (parser)->location; | |
13264 | ||
13265 | if (context == pragma_struct || context == pragma_param) | |
953ff289 | 13266 | { |
acf0174b JJ |
13267 | error ("%<#pragma omp declare reduction%> not at file or block scope"); |
13268 | goto fail; | |
13269 | } | |
953ff289 | 13270 | |
acf0174b JJ |
13271 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
13272 | goto fail; | |
953ff289 | 13273 | |
acf0174b JJ |
13274 | switch (c_parser_peek_token (parser)->type) |
13275 | { | |
13276 | case CPP_PLUS: | |
13277 | reduc_code = PLUS_EXPR; | |
13278 | break; | |
13279 | case CPP_MULT: | |
13280 | reduc_code = MULT_EXPR; | |
13281 | break; | |
13282 | case CPP_MINUS: | |
13283 | reduc_code = MINUS_EXPR; | |
13284 | break; | |
13285 | case CPP_AND: | |
13286 | reduc_code = BIT_AND_EXPR; | |
13287 | break; | |
13288 | case CPP_XOR: | |
13289 | reduc_code = BIT_XOR_EXPR; | |
13290 | break; | |
13291 | case CPP_OR: | |
13292 | reduc_code = BIT_IOR_EXPR; | |
13293 | break; | |
13294 | case CPP_AND_AND: | |
13295 | reduc_code = TRUTH_ANDIF_EXPR; | |
13296 | break; | |
13297 | case CPP_OR_OR: | |
13298 | reduc_code = TRUTH_ORIF_EXPR; | |
13299 | break; | |
13300 | case CPP_NAME: | |
13301 | const char *p; | |
13302 | p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
13303 | if (strcmp (p, "min") == 0) | |
13304 | { | |
13305 | reduc_code = MIN_EXPR; | |
13306 | break; | |
13307 | } | |
13308 | if (strcmp (p, "max") == 0) | |
13309 | { | |
13310 | reduc_code = MAX_EXPR; | |
13311 | break; | |
13312 | } | |
13313 | reduc_id = c_parser_peek_token (parser)->value; | |
953ff289 | 13314 | break; |
953ff289 | 13315 | default: |
acf0174b JJ |
13316 | c_parser_error (parser, |
13317 | "expected %<+%>, %<*%>, %<-%>, %<&%>, " | |
13318 | "%<^%>, %<|%>, %<&&%>, %<||%>, %<min%> or identifier"); | |
13319 | goto fail; | |
953ff289 DN |
13320 | } |
13321 | ||
acf0174b JJ |
13322 | tree orig_reduc_id, reduc_decl; |
13323 | orig_reduc_id = reduc_id; | |
13324 | reduc_id = c_omp_reduction_id (reduc_code, reduc_id); | |
13325 | reduc_decl = c_omp_reduction_decl (reduc_id); | |
13326 | c_parser_consume_token (parser); | |
953ff289 | 13327 | |
acf0174b JJ |
13328 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>")) |
13329 | goto fail; | |
c2255bc4 | 13330 | |
acf0174b JJ |
13331 | while (true) |
13332 | { | |
13333 | location_t loc = c_parser_peek_token (parser)->location; | |
13334 | struct c_type_name *ctype = c_parser_type_name (parser); | |
13335 | if (ctype != NULL) | |
13336 | { | |
13337 | type = groktypename (ctype, NULL, NULL); | |
13338 | if (type == error_mark_node) | |
13339 | ; | |
13340 | else if ((INTEGRAL_TYPE_P (type) | |
13341 | || TREE_CODE (type) == REAL_TYPE | |
13342 | || TREE_CODE (type) == COMPLEX_TYPE) | |
13343 | && orig_reduc_id == NULL_TREE) | |
13344 | error_at (loc, "predeclared arithmetic type in " | |
13345 | "%<#pragma omp declare reduction%>"); | |
13346 | else if (TREE_CODE (type) == FUNCTION_TYPE | |
13347 | || TREE_CODE (type) == ARRAY_TYPE) | |
13348 | error_at (loc, "function or array type in " | |
13349 | "%<#pragma omp declare reduction%>"); | |
13350 | else if (TYPE_QUALS_NO_ADDR_SPACE (type)) | |
13351 | error_at (loc, "const, volatile or restrict qualified type in " | |
13352 | "%<#pragma omp declare reduction%>"); | |
13353 | else | |
13354 | { | |
13355 | tree t; | |
13356 | for (t = DECL_INITIAL (reduc_decl); t; t = TREE_CHAIN (t)) | |
13357 | if (comptypes (TREE_PURPOSE (t), type)) | |
13358 | { | |
13359 | error_at (loc, "redeclaration of %qs " | |
13360 | "%<#pragma omp declare reduction%> for " | |
13361 | "type %qT", | |
13362 | IDENTIFIER_POINTER (reduc_id) | |
13363 | + sizeof ("omp declare reduction ") - 1, | |
13364 | type); | |
13365 | location_t ploc | |
13366 | = DECL_SOURCE_LOCATION (TREE_VEC_ELT (TREE_VALUE (t), | |
13367 | 0)); | |
13368 | error_at (ploc, "previous %<#pragma omp declare " | |
13369 | "reduction%>"); | |
13370 | break; | |
13371 | } | |
13372 | if (t == NULL_TREE) | |
13373 | types.safe_push (type); | |
13374 | } | |
13375 | if (c_parser_next_token_is (parser, CPP_COMMA)) | |
13376 | c_parser_consume_token (parser); | |
13377 | else | |
13378 | break; | |
13379 | } | |
13380 | else | |
13381 | break; | |
13382 | } | |
953ff289 | 13383 | |
acf0174b JJ |
13384 | if (!c_parser_require (parser, CPP_COLON, "expected %<:%>") |
13385 | || types.is_empty ()) | |
13386 | { | |
13387 | fail: | |
13388 | clauses.release (); | |
13389 | types.release (); | |
13390 | while (true) | |
13391 | { | |
13392 | c_token *token = c_parser_peek_token (parser); | |
13393 | if (token->type == CPP_EOF || token->type == CPP_PRAGMA_EOL) | |
13394 | break; | |
13395 | c_parser_consume_token (parser); | |
13396 | } | |
13397 | c_parser_skip_to_pragma_eol (parser); | |
13398 | return; | |
13399 | } | |
953ff289 | 13400 | |
acf0174b JJ |
13401 | if (types.length () > 1) |
13402 | { | |
13403 | while (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
13404 | { | |
13405 | c_token *token = c_parser_peek_token (parser); | |
13406 | if (token->type == CPP_EOF) | |
13407 | goto fail; | |
13408 | clauses.safe_push (*token); | |
13409 | c_parser_consume_token (parser); | |
13410 | } | |
13411 | clauses.safe_push (*c_parser_peek_token (parser)); | |
13412 | c_parser_skip_to_pragma_eol (parser); | |
953ff289 | 13413 | |
acf0174b JJ |
13414 | /* Make sure nothing tries to read past the end of the tokens. */ |
13415 | c_token eof_token; | |
13416 | memset (&eof_token, 0, sizeof (eof_token)); | |
13417 | eof_token.type = CPP_EOF; | |
13418 | clauses.safe_push (eof_token); | |
13419 | clauses.safe_push (eof_token); | |
13420 | } | |
953ff289 | 13421 | |
acf0174b JJ |
13422 | int errs = errorcount; |
13423 | FOR_EACH_VEC_ELT (types, i, type) | |
13424 | { | |
13425 | tokens_avail = parser->tokens_avail; | |
13426 | gcc_assert (parser->tokens == &parser->tokens_buf[0]); | |
13427 | if (!clauses.is_empty ()) | |
13428 | { | |
13429 | parser->tokens = clauses.address (); | |
13430 | parser->tokens_avail = clauses.length (); | |
13431 | parser->in_pragma = true; | |
13432 | } | |
953ff289 | 13433 | |
acf0174b JJ |
13434 | bool nested = current_function_decl != NULL_TREE; |
13435 | if (nested) | |
13436 | c_push_function_context (); | |
13437 | tree fndecl = build_decl (BUILTINS_LOCATION, FUNCTION_DECL, | |
13438 | reduc_id, default_function_type); | |
13439 | current_function_decl = fndecl; | |
13440 | allocate_struct_function (fndecl, true); | |
13441 | push_scope (); | |
13442 | tree stmt = push_stmt_list (); | |
13443 | /* Intentionally BUILTINS_LOCATION, so that -Wshadow doesn't | |
13444 | warn about these. */ | |
13445 | tree omp_out = build_decl (BUILTINS_LOCATION, VAR_DECL, | |
13446 | get_identifier ("omp_out"), type); | |
13447 | DECL_ARTIFICIAL (omp_out) = 1; | |
13448 | DECL_CONTEXT (omp_out) = fndecl; | |
13449 | pushdecl (omp_out); | |
13450 | tree omp_in = build_decl (BUILTINS_LOCATION, VAR_DECL, | |
13451 | get_identifier ("omp_in"), type); | |
13452 | DECL_ARTIFICIAL (omp_in) = 1; | |
13453 | DECL_CONTEXT (omp_in) = fndecl; | |
13454 | pushdecl (omp_in); | |
13455 | struct c_expr combiner = c_parser_expression (parser); | |
13456 | struct c_expr initializer; | |
13457 | tree omp_priv = NULL_TREE, omp_orig = NULL_TREE; | |
13458 | bool bad = false; | |
13459 | initializer.value = error_mark_node; | |
13460 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) | |
13461 | bad = true; | |
13462 | else if (c_parser_next_token_is (parser, CPP_NAME) | |
13463 | && strcmp (IDENTIFIER_POINTER | |
13464 | (c_parser_peek_token (parser)->value), | |
13465 | "initializer") == 0) | |
13466 | { | |
13467 | c_parser_consume_token (parser); | |
13468 | pop_scope (); | |
13469 | push_scope (); | |
13470 | omp_priv = build_decl (BUILTINS_LOCATION, VAR_DECL, | |
13471 | get_identifier ("omp_priv"), type); | |
13472 | DECL_ARTIFICIAL (omp_priv) = 1; | |
13473 | DECL_INITIAL (omp_priv) = error_mark_node; | |
13474 | DECL_CONTEXT (omp_priv) = fndecl; | |
13475 | pushdecl (omp_priv); | |
13476 | omp_orig = build_decl (BUILTINS_LOCATION, VAR_DECL, | |
13477 | get_identifier ("omp_orig"), type); | |
13478 | DECL_ARTIFICIAL (omp_orig) = 1; | |
13479 | DECL_CONTEXT (omp_orig) = fndecl; | |
13480 | pushdecl (omp_orig); | |
13481 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
13482 | bad = true; | |
13483 | else if (!c_parser_next_token_is (parser, CPP_NAME)) | |
13484 | { | |
13485 | c_parser_error (parser, "expected %<omp_priv%> or " | |
13486 | "function-name"); | |
13487 | bad = true; | |
13488 | } | |
13489 | else if (strcmp (IDENTIFIER_POINTER | |
13490 | (c_parser_peek_token (parser)->value), | |
13491 | "omp_priv") != 0) | |
13492 | { | |
13493 | if (c_parser_peek_2nd_token (parser)->type != CPP_OPEN_PAREN | |
13494 | || c_parser_peek_token (parser)->id_kind != C_ID_ID) | |
13495 | { | |
13496 | c_parser_error (parser, "expected function-name %<(%>"); | |
13497 | bad = true; | |
13498 | } | |
13499 | else | |
13500 | initializer = c_parser_postfix_expression (parser); | |
13501 | if (initializer.value | |
13502 | && TREE_CODE (initializer.value) == CALL_EXPR) | |
13503 | { | |
13504 | int j; | |
13505 | tree c = initializer.value; | |
13506 | for (j = 0; j < call_expr_nargs (c); j++) | |
13507 | if (TREE_CODE (CALL_EXPR_ARG (c, j)) == ADDR_EXPR | |
13508 | && TREE_OPERAND (CALL_EXPR_ARG (c, j), 0) == omp_priv) | |
13509 | break; | |
13510 | if (j == call_expr_nargs (c)) | |
13511 | error ("one of the initializer call arguments should be " | |
13512 | "%<&omp_priv%>"); | |
13513 | } | |
13514 | } | |
13515 | else | |
13516 | { | |
13517 | c_parser_consume_token (parser); | |
13518 | if (!c_parser_require (parser, CPP_EQ, "expected %<=%>")) | |
13519 | bad = true; | |
13520 | else | |
13521 | { | |
13522 | tree st = push_stmt_list (); | |
13523 | start_init (omp_priv, NULL_TREE, 0); | |
13524 | location_t loc = c_parser_peek_token (parser)->location; | |
13525 | struct c_expr init = c_parser_initializer (parser); | |
13526 | finish_init (); | |
13527 | finish_decl (omp_priv, loc, init.value, | |
13528 | init.original_type, NULL_TREE); | |
13529 | pop_stmt_list (st); | |
13530 | } | |
13531 | } | |
13532 | if (!bad | |
13533 | && !c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) | |
13534 | bad = true; | |
13535 | } | |
c2255bc4 | 13536 | |
acf0174b JJ |
13537 | if (!bad) |
13538 | { | |
13539 | c_parser_skip_to_pragma_eol (parser); | |
a68ab351 | 13540 | |
acf0174b JJ |
13541 | tree t = tree_cons (type, make_tree_vec (omp_priv ? 6 : 3), |
13542 | DECL_INITIAL (reduc_decl)); | |
13543 | DECL_INITIAL (reduc_decl) = t; | |
13544 | DECL_SOURCE_LOCATION (omp_out) = rloc; | |
13545 | TREE_VEC_ELT (TREE_VALUE (t), 0) = omp_out; | |
13546 | TREE_VEC_ELT (TREE_VALUE (t), 1) = omp_in; | |
13547 | TREE_VEC_ELT (TREE_VALUE (t), 2) = combiner.value; | |
13548 | walk_tree (&combiner.value, c_check_omp_declare_reduction_r, | |
13549 | &TREE_VEC_ELT (TREE_VALUE (t), 0), NULL); | |
13550 | if (omp_priv) | |
13551 | { | |
13552 | DECL_SOURCE_LOCATION (omp_priv) = rloc; | |
13553 | TREE_VEC_ELT (TREE_VALUE (t), 3) = omp_priv; | |
13554 | TREE_VEC_ELT (TREE_VALUE (t), 4) = omp_orig; | |
13555 | TREE_VEC_ELT (TREE_VALUE (t), 5) = initializer.value; | |
13556 | walk_tree (&initializer.value, c_check_omp_declare_reduction_r, | |
13557 | &TREE_VEC_ELT (TREE_VALUE (t), 3), NULL); | |
13558 | walk_tree (&DECL_INITIAL (omp_priv), | |
13559 | c_check_omp_declare_reduction_r, | |
13560 | &TREE_VEC_ELT (TREE_VALUE (t), 3), NULL); | |
13561 | } | |
13562 | } | |
a68ab351 | 13563 | |
acf0174b JJ |
13564 | pop_stmt_list (stmt); |
13565 | pop_scope (); | |
13566 | if (cfun->language != NULL) | |
13567 | { | |
13568 | ggc_free (cfun->language); | |
13569 | cfun->language = NULL; | |
13570 | } | |
13571 | set_cfun (NULL); | |
13572 | current_function_decl = NULL_TREE; | |
13573 | if (nested) | |
13574 | c_pop_function_context (); | |
a68ab351 | 13575 | |
acf0174b JJ |
13576 | if (!clauses.is_empty ()) |
13577 | { | |
13578 | parser->tokens = &parser->tokens_buf[0]; | |
13579 | parser->tokens_avail = tokens_avail; | |
13580 | } | |
13581 | if (bad) | |
13582 | goto fail; | |
13583 | if (errs != errorcount) | |
13584 | break; | |
13585 | } | |
a68ab351 | 13586 | |
acf0174b JJ |
13587 | clauses.release (); |
13588 | types.release (); | |
a68ab351 JJ |
13589 | } |
13590 | ||
953ff289 | 13591 | |
acf0174b JJ |
13592 | /* OpenMP 4.0 |
13593 | #pragma omp declare simd declare-simd-clauses[optseq] new-line | |
13594 | #pragma omp declare reduction (reduction-id : typename-list : expression) \ | |
13595 | initializer-clause[opt] new-line | |
13596 | #pragma omp declare target new-line */ | |
20906c66 JJ |
13597 | |
13598 | static void | |
acf0174b | 13599 | c_parser_omp_declare (c_parser *parser, enum pragma_context context) |
20906c66 | 13600 | { |
20906c66 | 13601 | c_parser_consume_pragma (parser); |
acf0174b JJ |
13602 | if (c_parser_next_token_is (parser, CPP_NAME)) |
13603 | { | |
13604 | const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value); | |
13605 | if (strcmp (p, "simd") == 0) | |
13606 | { | |
13607 | /* c_parser_consume_token (parser); done in | |
13608 | c_parser_omp_declare_simd. */ | |
13609 | c_parser_omp_declare_simd (parser, context); | |
13610 | return; | |
13611 | } | |
13612 | if (strcmp (p, "reduction") == 0) | |
13613 | { | |
13614 | c_parser_consume_token (parser); | |
13615 | c_parser_omp_declare_reduction (parser, context); | |
13616 | return; | |
13617 | } | |
6d7f7e0a TB |
13618 | if (!flag_openmp) /* flag_openmp_simd */ |
13619 | { | |
13620 | c_parser_skip_to_pragma_eol (parser); | |
13621 | return; | |
13622 | } | |
acf0174b JJ |
13623 | if (strcmp (p, "target") == 0) |
13624 | { | |
13625 | c_parser_consume_token (parser); | |
13626 | c_parser_omp_declare_target (parser); | |
13627 | return; | |
13628 | } | |
13629 | } | |
20906c66 | 13630 | |
acf0174b JJ |
13631 | c_parser_error (parser, "expected %<simd%> or %<reduction%> " |
13632 | "or %<target%>"); | |
13633 | c_parser_skip_to_pragma_eol (parser); | |
20906c66 JJ |
13634 | } |
13635 | ||
953ff289 DN |
13636 | /* Main entry point to parsing most OpenMP pragmas. */ |
13637 | ||
13638 | static void | |
13639 | c_parser_omp_construct (c_parser *parser) | |
13640 | { | |
13641 | enum pragma_kind p_kind; | |
13642 | location_t loc; | |
13643 | tree stmt; | |
acf0174b JJ |
13644 | char p_name[sizeof "#pragma omp teams distribute parallel for simd"]; |
13645 | omp_clause_mask mask (0); | |
953ff289 DN |
13646 | |
13647 | loc = c_parser_peek_token (parser)->location; | |
13648 | p_kind = c_parser_peek_token (parser)->pragma_kind; | |
13649 | c_parser_consume_pragma (parser); | |
13650 | ||
13651 | switch (p_kind) | |
13652 | { | |
13653 | case PRAGMA_OMP_ATOMIC: | |
c2255bc4 | 13654 | c_parser_omp_atomic (loc, parser); |
953ff289 DN |
13655 | return; |
13656 | case PRAGMA_OMP_CRITICAL: | |
c2255bc4 | 13657 | stmt = c_parser_omp_critical (loc, parser); |
953ff289 | 13658 | break; |
acf0174b JJ |
13659 | case PRAGMA_OMP_DISTRIBUTE: |
13660 | strcpy (p_name, "#pragma omp"); | |
13661 | stmt = c_parser_omp_distribute (loc, parser, p_name, mask, NULL); | |
13662 | break; | |
953ff289 | 13663 | case PRAGMA_OMP_FOR: |
acf0174b JJ |
13664 | strcpy (p_name, "#pragma omp"); |
13665 | stmt = c_parser_omp_for (loc, parser, p_name, mask, NULL); | |
953ff289 DN |
13666 | break; |
13667 | case PRAGMA_OMP_MASTER: | |
c2255bc4 | 13668 | stmt = c_parser_omp_master (loc, parser); |
953ff289 DN |
13669 | break; |
13670 | case PRAGMA_OMP_ORDERED: | |
c2255bc4 | 13671 | stmt = c_parser_omp_ordered (loc, parser); |
953ff289 DN |
13672 | break; |
13673 | case PRAGMA_OMP_PARALLEL: | |
acf0174b JJ |
13674 | strcpy (p_name, "#pragma omp"); |
13675 | stmt = c_parser_omp_parallel (loc, parser, p_name, mask, NULL); | |
953ff289 DN |
13676 | break; |
13677 | case PRAGMA_OMP_SECTIONS: | |
acf0174b JJ |
13678 | strcpy (p_name, "#pragma omp"); |
13679 | stmt = c_parser_omp_sections (loc, parser, p_name, mask, NULL); | |
13680 | break; | |
13681 | case PRAGMA_OMP_SIMD: | |
13682 | strcpy (p_name, "#pragma omp"); | |
13683 | stmt = c_parser_omp_simd (loc, parser, p_name, mask, NULL); | |
953ff289 DN |
13684 | break; |
13685 | case PRAGMA_OMP_SINGLE: | |
c2255bc4 | 13686 | stmt = c_parser_omp_single (loc, parser); |
953ff289 | 13687 | break; |
a68ab351 | 13688 | case PRAGMA_OMP_TASK: |
c2255bc4 | 13689 | stmt = c_parser_omp_task (loc, parser); |
a68ab351 | 13690 | break; |
acf0174b JJ |
13691 | case PRAGMA_OMP_TASKGROUP: |
13692 | stmt = c_parser_omp_taskgroup (parser); | |
13693 | break; | |
13694 | case PRAGMA_OMP_TEAMS: | |
13695 | strcpy (p_name, "#pragma omp"); | |
13696 | stmt = c_parser_omp_teams (loc, parser, p_name, mask, NULL); | |
13697 | break; | |
953ff289 DN |
13698 | default: |
13699 | gcc_unreachable (); | |
13700 | } | |
13701 | ||
13702 | if (stmt) | |
c2255bc4 | 13703 | gcc_assert (EXPR_LOCATION (stmt) != UNKNOWN_LOCATION); |
953ff289 DN |
13704 | } |
13705 | ||
13706 | ||
13707 | /* OpenMP 2.5: | |
13708 | # pragma omp threadprivate (variable-list) */ | |
13709 | ||
13710 | static void | |
13711 | c_parser_omp_threadprivate (c_parser *parser) | |
13712 | { | |
13713 | tree vars, t; | |
c2255bc4 | 13714 | location_t loc; |
953ff289 DN |
13715 | |
13716 | c_parser_consume_pragma (parser); | |
c2255bc4 | 13717 | loc = c_parser_peek_token (parser)->location; |
d75d71e0 | 13718 | vars = c_parser_omp_var_list_parens (parser, OMP_CLAUSE_ERROR, NULL); |
953ff289 | 13719 | |
953ff289 DN |
13720 | /* Mark every variable in VARS to be assigned thread local storage. */ |
13721 | for (t = vars; t; t = TREE_CHAIN (t)) | |
13722 | { | |
13723 | tree v = TREE_PURPOSE (t); | |
13724 | ||
c2255bc4 AH |
13725 | /* FIXME diagnostics: Ideally we should keep individual |
13726 | locations for all the variables in the var list to make the | |
13727 | following errors more precise. Perhaps | |
13728 | c_parser_omp_var_list_parens() should construct a list of | |
13729 | locations to go along with the var list. */ | |
13730 | ||
953ff289 DN |
13731 | /* If V had already been marked threadprivate, it doesn't matter |
13732 | whether it had been used prior to this point. */ | |
5df27e4a | 13733 | if (TREE_CODE (v) != VAR_DECL) |
c2255bc4 | 13734 | error_at (loc, "%qD is not a variable", v); |
5df27e4a | 13735 | else if (TREE_USED (v) && !C_DECL_THREADPRIVATE_P (v)) |
c2255bc4 | 13736 | error_at (loc, "%qE declared %<threadprivate%> after first use", v); |
953ff289 | 13737 | else if (! TREE_STATIC (v) && ! DECL_EXTERNAL (v)) |
c2255bc4 | 13738 | error_at (loc, "automatic variable %qE cannot be %<threadprivate%>", v); |
5df27e4a JJ |
13739 | else if (TREE_TYPE (v) == error_mark_node) |
13740 | ; | |
953ff289 | 13741 | else if (! COMPLETE_TYPE_P (TREE_TYPE (v))) |
c2255bc4 | 13742 | error_at (loc, "%<threadprivate%> %qE has incomplete type", v); |
953ff289 DN |
13743 | else |
13744 | { | |
13745 | if (! DECL_THREAD_LOCAL_P (v)) | |
13746 | { | |
56363ffd | 13747 | set_decl_tls_model (v, decl_default_tls_model (v)); |
953ff289 DN |
13748 | /* If rtl has been already set for this var, call |
13749 | make_decl_rtl once again, so that encode_section_info | |
13750 | has a chance to look at the new decl flags. */ | |
13751 | if (DECL_RTL_SET_P (v)) | |
13752 | make_decl_rtl (v); | |
13753 | } | |
13754 | C_DECL_THREADPRIVATE_P (v) = 1; | |
13755 | } | |
13756 | } | |
13757 | ||
13758 | c_parser_skip_to_pragma_eol (parser); | |
13759 | } | |
c02065fc AH |
13760 | \f |
13761 | /* Cilk Plus <#pragma simd> parsing routines. */ | |
13762 | ||
13763 | /* Helper function for c_parser_pragma. Perform some sanity checking | |
13764 | for <#pragma simd> constructs. Returns FALSE if there was a | |
13765 | problem. */ | |
13766 | ||
13767 | static bool | |
13768 | c_parser_cilk_verify_simd (c_parser *parser, | |
13769 | enum pragma_context context) | |
13770 | { | |
b72271b9 | 13771 | if (!flag_cilkplus) |
c02065fc AH |
13772 | { |
13773 | warning (0, "pragma simd ignored because -fcilkplus is not enabled"); | |
13774 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
13775 | return false; | |
13776 | } | |
13777 | if (context == pragma_external) | |
13778 | { | |
13779 | c_parser_error (parser,"pragma simd must be inside a function"); | |
13780 | c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL); | |
13781 | return false; | |
13782 | } | |
13783 | return true; | |
13784 | } | |
13785 | ||
13786 | /* Cilk Plus: | |
41958c28 BI |
13787 | This function is shared by SIMD-enabled functions and #pragma simd. |
13788 | If IS_SIMD_FN is true then it is parsing a SIMD-enabled function and | |
13789 | CLAUSES is unused. The main purpose of this function is to parse a | |
13790 | vectorlength attribute or clause and check for parse errors. | |
13791 | When IS_SIMD_FN is true then the function is merely caching the tokens | |
13792 | in PARSER->CILK_SIMD_FN_TOKENS. If errors are found then the token | |
13793 | cache is cleared since there is no reason to continue. | |
13794 | Syntax: | |
13795 | vectorlength ( constant-expression ) */ | |
c02065fc AH |
13796 | |
13797 | static tree | |
41958c28 BI |
13798 | c_parser_cilk_clause_vectorlength (c_parser *parser, tree clauses, |
13799 | bool is_simd_fn) | |
c02065fc | 13800 | { |
41958c28 BI |
13801 | if (is_simd_fn) |
13802 | check_no_duplicate_clause (clauses, OMP_CLAUSE_SIMDLEN, "vectorlength"); | |
13803 | else | |
c02065fc AH |
13804 | /* The vectorlength clause behaves exactly like OpenMP's safelen |
13805 | clause. Represent it in OpenMP terms. */ | |
41958c28 | 13806 | check_no_duplicate_clause (clauses, OMP_CLAUSE_SAFELEN, "vectorlength"); |
c02065fc AH |
13807 | |
13808 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
13809 | return clauses; | |
13810 | ||
13811 | location_t loc = c_parser_peek_token (parser)->location; | |
13812 | tree expr = c_parser_expr_no_commas (parser, NULL).value; | |
13813 | expr = c_fully_fold (expr, false, NULL); | |
13814 | ||
41958c28 BI |
13815 | /* If expr is an error_mark_node then the above function would have |
13816 | emitted an error. No reason to do it twice. */ | |
13817 | if (expr == error_mark_node) | |
13818 | ; | |
13819 | else if (!TREE_TYPE (expr) | |
13820 | || !TREE_CONSTANT (expr) | |
13821 | || !INTEGRAL_TYPE_P (TREE_TYPE (expr))) | |
13822 | ||
13823 | error_at (loc, "vectorlength must be an integer constant"); | |
807e902e | 13824 | else if (wi::exact_log2 (expr) == -1) |
c02065fc AH |
13825 | error_at (loc, "vectorlength must be a power of 2"); |
13826 | else | |
13827 | { | |
41958c28 BI |
13828 | if (is_simd_fn) |
13829 | { | |
13830 | tree u = build_omp_clause (loc, OMP_CLAUSE_SIMDLEN); | |
13831 | OMP_CLAUSE_SIMDLEN_EXPR (u) = expr; | |
13832 | OMP_CLAUSE_CHAIN (u) = clauses; | |
13833 | clauses = u; | |
13834 | } | |
13835 | else | |
13836 | { | |
13837 | tree u = build_omp_clause (loc, OMP_CLAUSE_SAFELEN); | |
13838 | OMP_CLAUSE_SAFELEN_EXPR (u) = expr; | |
13839 | OMP_CLAUSE_CHAIN (u) = clauses; | |
13840 | clauses = u; | |
13841 | } | |
c02065fc AH |
13842 | } |
13843 | ||
13844 | c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
13845 | ||
13846 | return clauses; | |
13847 | } | |
13848 | ||
13849 | /* Cilk Plus: | |
13850 | linear ( simd-linear-variable-list ) | |
13851 | ||
13852 | simd-linear-variable-list: | |
13853 | simd-linear-variable | |
13854 | simd-linear-variable-list , simd-linear-variable | |
13855 | ||
13856 | simd-linear-variable: | |
13857 | id-expression | |
13858 | id-expression : simd-linear-step | |
13859 | ||
13860 | simd-linear-step: | |
13861 | conditional-expression */ | |
13862 | ||
13863 | static tree | |
13864 | c_parser_cilk_clause_linear (c_parser *parser, tree clauses) | |
13865 | { | |
13866 | if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) | |
13867 | return clauses; | |
13868 | ||
13869 | location_t loc = c_parser_peek_token (parser)->location; | |
13870 | ||
13871 | if (c_parser_next_token_is_not (parser, CPP_NAME) | |
13872 | || c_parser_peek_token (parser)->id_kind != C_ID_ID) | |
13873 | c_parser_error (parser, "expected identifier"); | |
13874 | ||
13875 | while (c_parser_next_token_is (parser, CPP_NAME) | |
13876 | && c_parser_peek_token (parser)->id_kind == C_ID_ID) | |
13877 | { | |
13878 | tree var = lookup_name (c_parser_peek_token (parser)->value); | |
13879 | ||
13880 | if (var == NULL) | |
13881 | { | |
13882 | undeclared_variable (c_parser_peek_token (parser)->location, | |
13883 | c_parser_peek_token (parser)->value); | |
13884 | c_parser_consume_token (parser); | |
13885 | } | |
13886 | else if (var == error_mark_node) | |
13887 | c_parser_consume_token (parser); | |
13888 | else | |
13889 | { | |
13890 | tree step = integer_one_node; | |
13891 | ||
13892 | /* Parse the linear step if present. */ | |
13893 | if (c_parser_peek_2nd_token (parser)->type == CPP_COLON) | |
13894 | { | |
13895 | c_parser_consume_token (parser); | |
13896 | c_parser_consume_token (parser); | |
13897 | ||
13898 | tree expr = c_parser_expr_no_commas (parser, NULL).value; | |
13899 | expr = c_fully_fold (expr, false, NULL); | |
13900 | ||
13901 | if (TREE_TYPE (expr) | |
13902 | && INTEGRAL_TYPE_P (TREE_TYPE (expr)) | |
13903 | && (TREE_CONSTANT (expr) | |
13904 | || DECL_P (expr))) | |
13905 | step = expr; | |
13906 | else | |
13907 | c_parser_error (parser, | |
13908 | "step size must be an integer constant " | |
13909 | "expression or an integer variable"); | |
13910 | } | |
13911 | else | |
13912 | c_parser_consume_token (parser); | |
13913 | ||
13914 | /* Use OMP_CLAUSE_LINEAR, which has the same semantics. */ | |
13915 | tree u = build_omp_clause (loc, OMP_CLAUSE_LINEAR); | |
13916 | OMP_CLAUSE_DECL (u) = var; | |
13917 | OMP_CLAUSE_LINEAR_STEP (u) = step; | |
13918 | OMP_CLAUSE_CHAIN (u) = clauses; | |
13919 | clauses = u; | |
13920 | } | |
13921 | ||
13922 | if (c_parser_next_token_is_not (parser, CPP_COMMA)) | |
13923 | break; | |
13924 | ||
13925 | c_parser_consume_token (parser); | |
13926 | } | |
13927 | ||
13928 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>"); | |
13929 | ||
13930 | return clauses; | |
13931 | } | |
13932 | ||
13933 | /* Returns the name of the next clause. If the clause is not | |
13934 | recognized SIMD_OMP_CLAUSE_NONE is returned and the next token is | |
13935 | not consumed. Otherwise, the appropriate pragma_simd_clause is | |
13936 | returned and the token is consumed. */ | |
13937 | ||
41958c28 | 13938 | static pragma_omp_clause |
c02065fc AH |
13939 | c_parser_cilk_clause_name (c_parser *parser) |
13940 | { | |
41958c28 | 13941 | pragma_omp_clause result; |
c02065fc AH |
13942 | c_token *token = c_parser_peek_token (parser); |
13943 | ||
13944 | if (!token->value || token->type != CPP_NAME) | |
13945 | return PRAGMA_CILK_CLAUSE_NONE; | |
13946 | ||
13947 | const char *p = IDENTIFIER_POINTER (token->value); | |
13948 | ||
13949 | if (!strcmp (p, "vectorlength")) | |
13950 | result = PRAGMA_CILK_CLAUSE_VECTORLENGTH; | |
13951 | else if (!strcmp (p, "linear")) | |
13952 | result = PRAGMA_CILK_CLAUSE_LINEAR; | |
13953 | else if (!strcmp (p, "private")) | |
13954 | result = PRAGMA_CILK_CLAUSE_PRIVATE; | |
13955 | else if (!strcmp (p, "firstprivate")) | |
13956 | result = PRAGMA_CILK_CLAUSE_FIRSTPRIVATE; | |
13957 | else if (!strcmp (p, "lastprivate")) | |
13958 | result = PRAGMA_CILK_CLAUSE_LASTPRIVATE; | |
13959 | else if (!strcmp (p, "reduction")) | |
13960 | result = PRAGMA_CILK_CLAUSE_REDUCTION; | |
13961 | else | |
13962 | return PRAGMA_CILK_CLAUSE_NONE; | |
13963 | ||
13964 | c_parser_consume_token (parser); | |
13965 | return result; | |
13966 | } | |
13967 | ||
13968 | /* Parse all #<pragma simd> clauses. Return the list of clauses | |
13969 | found. */ | |
13970 | ||
13971 | static tree | |
13972 | c_parser_cilk_all_clauses (c_parser *parser) | |
13973 | { | |
13974 | tree clauses = NULL; | |
13975 | ||
13976 | while (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL)) | |
13977 | { | |
41958c28 | 13978 | pragma_omp_clause c_kind; |
c02065fc AH |
13979 | |
13980 | c_kind = c_parser_cilk_clause_name (parser); | |
13981 | ||
13982 | switch (c_kind) | |
13983 | { | |
13984 | case PRAGMA_CILK_CLAUSE_VECTORLENGTH: | |
41958c28 | 13985 | clauses = c_parser_cilk_clause_vectorlength (parser, clauses, false); |
c02065fc AH |
13986 | break; |
13987 | case PRAGMA_CILK_CLAUSE_LINEAR: | |
13988 | clauses = c_parser_cilk_clause_linear (parser, clauses); | |
13989 | break; | |
13990 | case PRAGMA_CILK_CLAUSE_PRIVATE: | |
13991 | /* Use the OpenMP counterpart. */ | |
13992 | clauses = c_parser_omp_clause_private (parser, clauses); | |
13993 | break; | |
13994 | case PRAGMA_CILK_CLAUSE_FIRSTPRIVATE: | |
13995 | /* Use the OpenMP counterpart. */ | |
13996 | clauses = c_parser_omp_clause_firstprivate (parser, clauses); | |
13997 | break; | |
13998 | case PRAGMA_CILK_CLAUSE_LASTPRIVATE: | |
13999 | /* Use the OpenMP counterpart. */ | |
14000 | clauses = c_parser_omp_clause_lastprivate (parser, clauses); | |
14001 | break; | |
14002 | case PRAGMA_CILK_CLAUSE_REDUCTION: | |
14003 | /* Use the OpenMP counterpart. */ | |
14004 | clauses = c_parser_omp_clause_reduction (parser, clauses); | |
14005 | break; | |
14006 | default: | |
14007 | c_parser_error (parser, "expected %<#pragma simd%> clause"); | |
14008 | goto saw_error; | |
14009 | } | |
14010 | } | |
14011 | ||
14012 | saw_error: | |
14013 | c_parser_skip_to_pragma_eol (parser); | |
14014 | return c_finish_cilk_clauses (clauses); | |
14015 | } | |
14016 | ||
9a771876 JJ |
14017 | /* This function helps parse the grainsize pragma for a _Cilk_for statement. |
14018 | Here is the correct syntax of this pragma: | |
14019 | #pragma cilk grainsize = <EXP> | |
14020 | */ | |
14021 | ||
14022 | static void | |
14023 | c_parser_cilk_grainsize (c_parser *parser) | |
14024 | { | |
14025 | extern tree convert_to_integer (tree, tree); | |
14026 | ||
14027 | /* consume the 'grainsize' keyword. */ | |
14028 | c_parser_consume_pragma (parser); | |
14029 | ||
14030 | if (c_parser_require (parser, CPP_EQ, "expected %<=%>") != 0) | |
14031 | { | |
14032 | struct c_expr g_expr = c_parser_binary_expression (parser, NULL, NULL); | |
14033 | if (g_expr.value == error_mark_node) | |
14034 | { | |
14035 | c_parser_skip_to_pragma_eol (parser); | |
14036 | return; | |
14037 | } | |
14038 | tree grain = convert_to_integer (long_integer_type_node, | |
14039 | c_fully_fold (g_expr.value, false, | |
14040 | NULL)); | |
14041 | c_parser_skip_to_pragma_eol (parser); | |
14042 | c_token *token = c_parser_peek_token (parser); | |
14043 | if (token && token->type == CPP_KEYWORD | |
14044 | && token->keyword == RID_CILK_FOR) | |
14045 | { | |
14046 | if (grain == NULL_TREE || grain == error_mark_node) | |
14047 | grain = integer_zero_node; | |
14048 | c_parser_cilk_for (parser, grain); | |
14049 | } | |
14050 | else | |
14051 | warning (0, "%<#pragma cilk grainsize%> is not followed by " | |
14052 | "%<_Cilk_for%>"); | |
14053 | } | |
14054 | else | |
14055 | c_parser_skip_to_pragma_eol (parser); | |
14056 | } | |
14057 | ||
14058 | /* Main entry point for parsing Cilk Plus <#pragma simd> for loops. */ | |
953ff289 | 14059 | |
c02065fc | 14060 | static void |
e7bd1de1 | 14061 | c_parser_cilk_simd (c_parser *parser) |
c02065fc | 14062 | { |
c02065fc AH |
14063 | tree clauses = c_parser_cilk_all_clauses (parser); |
14064 | tree block = c_begin_compound_stmt (true); | |
14065 | location_t loc = c_parser_peek_token (parser)->location; | |
14066 | c_parser_omp_for_loop (loc, parser, CILK_SIMD, clauses, NULL); | |
14067 | block = c_end_compound_stmt (loc, block, true); | |
14068 | add_stmt (block); | |
14069 | } | |
9a771876 JJ |
14070 | |
14071 | /* Create an artificial decl with TYPE and emit initialization of it with | |
14072 | INIT. */ | |
14073 | ||
14074 | static tree | |
14075 | c_get_temp_regvar (tree type, tree init) | |
14076 | { | |
14077 | location_t loc = EXPR_LOCATION (init); | |
14078 | tree decl = build_decl (loc, VAR_DECL, NULL_TREE, type); | |
14079 | DECL_ARTIFICIAL (decl) = 1; | |
14080 | DECL_IGNORED_P (decl) = 1; | |
14081 | pushdecl (decl); | |
14082 | tree t = build2 (INIT_EXPR, type, decl, init); | |
14083 | add_stmt (t); | |
14084 | return decl; | |
14085 | } | |
14086 | ||
14087 | /* Main entry point for parsing Cilk Plus _Cilk_for loops. | |
14088 | GRAIN is the grain value passed in through pragma or 0. */ | |
14089 | ||
14090 | static void | |
14091 | c_parser_cilk_for (c_parser *parser, tree grain) | |
14092 | { | |
14093 | tree clauses = build_omp_clause (EXPR_LOCATION (grain), OMP_CLAUSE_SCHEDULE); | |
14094 | OMP_CLAUSE_SCHEDULE_KIND (clauses) = OMP_CLAUSE_SCHEDULE_CILKFOR; | |
14095 | OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (clauses) = grain; | |
14096 | clauses = c_finish_omp_clauses (clauses); | |
14097 | ||
14098 | tree block = c_begin_compound_stmt (true); | |
14099 | tree sb = push_stmt_list (); | |
14100 | location_t loc = c_parser_peek_token (parser)->location; | |
14101 | tree omp_for = c_parser_omp_for_loop (loc, parser, CILK_FOR, clauses, NULL); | |
14102 | sb = pop_stmt_list (sb); | |
14103 | ||
14104 | if (omp_for) | |
14105 | { | |
14106 | tree omp_par = make_node (OMP_PARALLEL); | |
14107 | TREE_TYPE (omp_par) = void_type_node; | |
14108 | OMP_PARALLEL_CLAUSES (omp_par) = NULL_TREE; | |
14109 | tree bind = build3 (BIND_EXPR, void_type_node, NULL, NULL, NULL); | |
14110 | TREE_SIDE_EFFECTS (bind) = 1; | |
14111 | BIND_EXPR_BODY (bind) = sb; | |
14112 | OMP_PARALLEL_BODY (omp_par) = bind; | |
14113 | if (OMP_FOR_PRE_BODY (omp_for)) | |
14114 | { | |
14115 | add_stmt (OMP_FOR_PRE_BODY (omp_for)); | |
14116 | OMP_FOR_PRE_BODY (omp_for) = NULL_TREE; | |
14117 | } | |
14118 | tree init = TREE_VEC_ELT (OMP_FOR_INIT (omp_for), 0); | |
14119 | tree decl = TREE_OPERAND (init, 0); | |
14120 | tree cond = TREE_VEC_ELT (OMP_FOR_COND (omp_for), 0); | |
14121 | tree incr = TREE_VEC_ELT (OMP_FOR_INCR (omp_for), 0); | |
14122 | tree t = TREE_OPERAND (cond, 1), c, clauses = NULL_TREE; | |
14123 | if (TREE_CODE (t) != INTEGER_CST) | |
14124 | { | |
14125 | TREE_OPERAND (cond, 1) = c_get_temp_regvar (TREE_TYPE (t), t); | |
14126 | c = build_omp_clause (input_location, OMP_CLAUSE_FIRSTPRIVATE); | |
14127 | OMP_CLAUSE_DECL (c) = TREE_OPERAND (cond, 1); | |
14128 | OMP_CLAUSE_CHAIN (c) = clauses; | |
14129 | clauses = c; | |
14130 | } | |
14131 | if (TREE_CODE (incr) == MODIFY_EXPR) | |
14132 | { | |
14133 | t = TREE_OPERAND (TREE_OPERAND (incr, 1), 1); | |
14134 | if (TREE_CODE (t) != INTEGER_CST) | |
14135 | { | |
14136 | TREE_OPERAND (TREE_OPERAND (incr, 1), 1) | |
14137 | = c_get_temp_regvar (TREE_TYPE (t), t); | |
14138 | c = build_omp_clause (input_location, OMP_CLAUSE_FIRSTPRIVATE); | |
14139 | OMP_CLAUSE_DECL (c) = TREE_OPERAND (TREE_OPERAND (incr, 1), 1); | |
14140 | OMP_CLAUSE_CHAIN (c) = clauses; | |
14141 | clauses = c; | |
14142 | } | |
14143 | } | |
14144 | t = TREE_OPERAND (init, 1); | |
14145 | if (TREE_CODE (t) != INTEGER_CST) | |
14146 | { | |
14147 | TREE_OPERAND (init, 1) = c_get_temp_regvar (TREE_TYPE (t), t); | |
14148 | c = build_omp_clause (input_location, OMP_CLAUSE_FIRSTPRIVATE); | |
14149 | OMP_CLAUSE_DECL (c) = TREE_OPERAND (init, 1); | |
14150 | OMP_CLAUSE_CHAIN (c) = clauses; | |
14151 | clauses = c; | |
14152 | } | |
14153 | c = build_omp_clause (input_location, OMP_CLAUSE_PRIVATE); | |
14154 | OMP_CLAUSE_DECL (c) = decl; | |
14155 | OMP_CLAUSE_CHAIN (c) = clauses; | |
14156 | clauses = c; | |
14157 | c = build_omp_clause (input_location, OMP_CLAUSE__CILK_FOR_COUNT_); | |
14158 | OMP_CLAUSE_OPERAND (c, 0) | |
14159 | = cilk_for_number_of_iterations (omp_for); | |
14160 | OMP_CLAUSE_CHAIN (c) = clauses; | |
14161 | OMP_PARALLEL_CLAUSES (omp_par) = c_finish_omp_clauses (c); | |
14162 | add_stmt (omp_par); | |
14163 | } | |
14164 | ||
14165 | block = c_end_compound_stmt (loc, block, true); | |
14166 | add_stmt (block); | |
14167 | } | |
14168 | ||
c02065fc | 14169 | \f |
0a35513e AH |
14170 | /* Parse a transaction attribute (GCC Extension). |
14171 | ||
14172 | transaction-attribute: | |
14173 | attributes | |
14174 | [ [ any-word ] ] | |
14175 | ||
14176 | The transactional memory language description is written for C++, | |
14177 | and uses the C++0x attribute syntax. For compatibility, allow the | |
14178 | bracket style for transactions in C as well. */ | |
14179 | ||
14180 | static tree | |
14181 | c_parser_transaction_attributes (c_parser *parser) | |
14182 | { | |
14183 | tree attr_name, attr = NULL; | |
14184 | ||
14185 | if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)) | |
14186 | return c_parser_attributes (parser); | |
14187 | ||
14188 | if (!c_parser_next_token_is (parser, CPP_OPEN_SQUARE)) | |
14189 | return NULL_TREE; | |
14190 | c_parser_consume_token (parser); | |
14191 | if (!c_parser_require (parser, CPP_OPEN_SQUARE, "expected %<[%>")) | |
14192 | goto error1; | |
14193 | ||
14194 | attr_name = c_parser_attribute_any_word (parser); | |
14195 | if (attr_name) | |
14196 | { | |
14197 | c_parser_consume_token (parser); | |
14198 | attr = build_tree_list (attr_name, NULL_TREE); | |
14199 | } | |
14200 | else | |
14201 | c_parser_error (parser, "expected identifier"); | |
14202 | ||
14203 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, "expected %<]%>"); | |
14204 | error1: | |
14205 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, "expected %<]%>"); | |
14206 | return attr; | |
14207 | } | |
14208 | ||
14209 | /* Parse a __transaction_atomic or __transaction_relaxed statement | |
14210 | (GCC Extension). | |
14211 | ||
14212 | transaction-statement: | |
14213 | __transaction_atomic transaction-attribute[opt] compound-statement | |
14214 | __transaction_relaxed compound-statement | |
14215 | ||
14216 | Note that the only valid attribute is: "outer". | |
14217 | */ | |
14218 | ||
14219 | static tree | |
14220 | c_parser_transaction (c_parser *parser, enum rid keyword) | |
14221 | { | |
14222 | unsigned int old_in = parser->in_transaction; | |
14223 | unsigned int this_in = 1, new_in; | |
14224 | location_t loc = c_parser_peek_token (parser)->location; | |
14225 | tree stmt, attrs; | |
14226 | ||
14227 | gcc_assert ((keyword == RID_TRANSACTION_ATOMIC | |
14228 | || keyword == RID_TRANSACTION_RELAXED) | |
14229 | && c_parser_next_token_is_keyword (parser, keyword)); | |
14230 | c_parser_consume_token (parser); | |
14231 | ||
14232 | if (keyword == RID_TRANSACTION_RELAXED) | |
14233 | this_in |= TM_STMT_ATTR_RELAXED; | |
14234 | else | |
14235 | { | |
14236 | attrs = c_parser_transaction_attributes (parser); | |
14237 | if (attrs) | |
14238 | this_in |= parse_tm_stmt_attr (attrs, TM_STMT_ATTR_OUTER); | |
14239 | } | |
14240 | ||
14241 | /* Keep track if we're in the lexical scope of an outer transaction. */ | |
14242 | new_in = this_in | (old_in & TM_STMT_ATTR_OUTER); | |
14243 | ||
14244 | parser->in_transaction = new_in; | |
14245 | stmt = c_parser_compound_statement (parser); | |
14246 | parser->in_transaction = old_in; | |
14247 | ||
14248 | if (flag_tm) | |
14249 | stmt = c_finish_transaction (loc, stmt, this_in); | |
14250 | else | |
14251 | error_at (loc, (keyword == RID_TRANSACTION_ATOMIC ? | |
14252 | "%<__transaction_atomic%> without transactional memory support enabled" | |
14253 | : "%<__transaction_relaxed %> " | |
14254 | "without transactional memory support enabled")); | |
14255 | ||
14256 | return stmt; | |
14257 | } | |
14258 | ||
14259 | /* Parse a __transaction_atomic or __transaction_relaxed expression | |
14260 | (GCC Extension). | |
14261 | ||
14262 | transaction-expression: | |
14263 | __transaction_atomic ( expression ) | |
14264 | __transaction_relaxed ( expression ) | |
14265 | */ | |
14266 | ||
14267 | static struct c_expr | |
14268 | c_parser_transaction_expression (c_parser *parser, enum rid keyword) | |
14269 | { | |
14270 | struct c_expr ret; | |
14271 | unsigned int old_in = parser->in_transaction; | |
14272 | unsigned int this_in = 1; | |
14273 | location_t loc = c_parser_peek_token (parser)->location; | |
14274 | tree attrs; | |
14275 | ||
14276 | gcc_assert ((keyword == RID_TRANSACTION_ATOMIC | |
14277 | || keyword == RID_TRANSACTION_RELAXED) | |
14278 | && c_parser_next_token_is_keyword (parser, keyword)); | |
14279 | c_parser_consume_token (parser); | |
14280 | ||
14281 | if (keyword == RID_TRANSACTION_RELAXED) | |
14282 | this_in |= TM_STMT_ATTR_RELAXED; | |
14283 | else | |
14284 | { | |
14285 | attrs = c_parser_transaction_attributes (parser); | |
14286 | if (attrs) | |
14287 | this_in |= parse_tm_stmt_attr (attrs, 0); | |
14288 | } | |
14289 | ||
14290 | parser->in_transaction = this_in; | |
69b76518 | 14291 | if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>")) |
0a35513e AH |
14292 | { |
14293 | tree expr = c_parser_expression (parser).value; | |
14294 | ret.original_type = TREE_TYPE (expr); | |
14295 | ret.value = build1 (TRANSACTION_EXPR, ret.original_type, expr); | |
14296 | if (this_in & TM_STMT_ATTR_RELAXED) | |
14297 | TRANSACTION_EXPR_RELAXED (ret.value) = 1; | |
14298 | SET_EXPR_LOCATION (ret.value, loc); | |
14299 | ret.original_code = TRANSACTION_EXPR; | |
69b76518 TR |
14300 | if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>")) |
14301 | { | |
14302 | c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL); | |
14303 | goto error; | |
14304 | } | |
0a35513e AH |
14305 | } |
14306 | else | |
14307 | { | |
69b76518 | 14308 | error: |
0a35513e AH |
14309 | ret.value = error_mark_node; |
14310 | ret.original_code = ERROR_MARK; | |
14311 | ret.original_type = NULL; | |
14312 | } | |
14313 | parser->in_transaction = old_in; | |
14314 | ||
14315 | if (!flag_tm) | |
14316 | error_at (loc, (keyword == RID_TRANSACTION_ATOMIC ? | |
14317 | "%<__transaction_atomic%> without transactional memory support enabled" | |
14318 | : "%<__transaction_relaxed %> " | |
14319 | "without transactional memory support enabled")); | |
14320 | ||
14321 | return ret; | |
14322 | } | |
14323 | ||
14324 | /* Parse a __transaction_cancel statement (GCC Extension). | |
14325 | ||
14326 | transaction-cancel-statement: | |
14327 | __transaction_cancel transaction-attribute[opt] ; | |
14328 | ||
14329 | Note that the only valid attribute is "outer". | |
14330 | */ | |
14331 | ||
14332 | static tree | |
acf0174b | 14333 | c_parser_transaction_cancel (c_parser *parser) |
0a35513e AH |
14334 | { |
14335 | location_t loc = c_parser_peek_token (parser)->location; | |
14336 | tree attrs; | |
14337 | bool is_outer = false; | |
14338 | ||
14339 | gcc_assert (c_parser_next_token_is_keyword (parser, RID_TRANSACTION_CANCEL)); | |
14340 | c_parser_consume_token (parser); | |
14341 | ||
14342 | attrs = c_parser_transaction_attributes (parser); | |
14343 | if (attrs) | |
14344 | is_outer = (parse_tm_stmt_attr (attrs, TM_STMT_ATTR_OUTER) != 0); | |
14345 | ||
14346 | if (!flag_tm) | |
14347 | { | |
14348 | error_at (loc, "%<__transaction_cancel%> without " | |
14349 | "transactional memory support enabled"); | |
14350 | goto ret_error; | |
14351 | } | |
14352 | else if (parser->in_transaction & TM_STMT_ATTR_RELAXED) | |
14353 | { | |
14354 | error_at (loc, "%<__transaction_cancel%> within a " | |
14355 | "%<__transaction_relaxed%>"); | |
14356 | goto ret_error; | |
14357 | } | |
14358 | else if (is_outer) | |
14359 | { | |
14360 | if ((parser->in_transaction & TM_STMT_ATTR_OUTER) == 0 | |
14361 | && !is_tm_may_cancel_outer (current_function_decl)) | |
14362 | { | |
14363 | error_at (loc, "outer %<__transaction_cancel%> not " | |
14364 | "within outer %<__transaction_atomic%>"); | |
14365 | error_at (loc, " or a %<transaction_may_cancel_outer%> function"); | |
14366 | goto ret_error; | |
14367 | } | |
14368 | } | |
14369 | else if (parser->in_transaction == 0) | |
14370 | { | |
14371 | error_at (loc, "%<__transaction_cancel%> not within " | |
14372 | "%<__transaction_atomic%>"); | |
14373 | goto ret_error; | |
14374 | } | |
14375 | ||
14376 | return add_stmt (build_tm_abort_call (loc, is_outer)); | |
14377 | ||
14378 | ret_error: | |
14379 | return build1 (NOP_EXPR, void_type_node, error_mark_node); | |
14380 | } | |
bc4071dd | 14381 | \f |
27bf414c JM |
14382 | /* Parse a single source file. */ |
14383 | ||
14384 | void | |
14385 | c_parse_file (void) | |
14386 | { | |
bc4071dd RH |
14387 | /* Use local storage to begin. If the first token is a pragma, parse it. |
14388 | If it is #pragma GCC pch_preprocess, then this will load a PCH file | |
14389 | which will cause garbage collection. */ | |
14390 | c_parser tparser; | |
14391 | ||
14392 | memset (&tparser, 0, sizeof tparser); | |
acf0174b | 14393 | tparser.tokens = &tparser.tokens_buf[0]; |
bc4071dd RH |
14394 | the_parser = &tparser; |
14395 | ||
14396 | if (c_parser_peek_token (&tparser)->pragma_kind == PRAGMA_GCC_PCH_PREPROCESS) | |
14397 | c_parser_pragma_pch_preprocess (&tparser); | |
14398 | ||
766090c2 | 14399 | the_parser = ggc_alloc<c_parser> (); |
bc4071dd | 14400 | *the_parser = tparser; |
acf0174b JJ |
14401 | if (tparser.tokens == &tparser.tokens_buf[0]) |
14402 | the_parser->tokens = &the_parser->tokens_buf[0]; | |
bc4071dd | 14403 | |
f9417da1 RG |
14404 | /* Initialize EH, if we've been told to do so. */ |
14405 | if (flag_exceptions) | |
1d65f45c | 14406 | using_eh_for_cleanups (); |
f9417da1 | 14407 | |
27bf414c JM |
14408 | c_parser_translation_unit (the_parser); |
14409 | the_parser = NULL; | |
14410 | } | |
14411 | ||
36536d79 BI |
14412 | /* This function parses Cilk Plus array notation. The starting index is |
14413 | passed in INITIAL_INDEX and the array name is passes in ARRAY_VALUE. The | |
14414 | return value of this function is a tree_node called VALUE_TREE of type | |
14415 | ARRAY_NOTATION_REF. */ | |
14416 | ||
14417 | static tree | |
14418 | c_parser_array_notation (location_t loc, c_parser *parser, tree initial_index, | |
14419 | tree array_value) | |
14420 | { | |
14421 | c_token *token = NULL; | |
14422 | tree start_index = NULL_TREE, end_index = NULL_TREE, stride = NULL_TREE; | |
14423 | tree value_tree = NULL_TREE, type = NULL_TREE, array_type = NULL_TREE; | |
14424 | tree array_type_domain = NULL_TREE; | |
14425 | ||
5e88a8f4 | 14426 | if (array_value == error_mark_node || initial_index == error_mark_node) |
36536d79 BI |
14427 | { |
14428 | /* No need to continue. If either of these 2 were true, then an error | |
14429 | must be emitted already. Thus, no need to emit them twice. */ | |
14430 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
14431 | return error_mark_node; | |
14432 | } | |
14433 | ||
14434 | array_type = TREE_TYPE (array_value); | |
14435 | gcc_assert (array_type); | |
671a475e IZ |
14436 | if (TREE_CODE (array_type) != ARRAY_TYPE |
14437 | && TREE_CODE (array_type) != POINTER_TYPE) | |
14438 | { | |
14439 | error_at (loc, "base of array section must be pointer or array type"); | |
14440 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
14441 | return error_mark_node; | |
14442 | } | |
36536d79 BI |
14443 | type = TREE_TYPE (array_type); |
14444 | token = c_parser_peek_token (parser); | |
14445 | ||
14446 | if (token->type == CPP_EOF) | |
14447 | { | |
14448 | c_parser_error (parser, "expected %<:%> or numeral"); | |
14449 | return value_tree; | |
14450 | } | |
14451 | else if (token->type == CPP_COLON) | |
14452 | { | |
14453 | if (!initial_index) | |
14454 | { | |
14455 | /* If we are here, then we have a case like this A[:]. */ | |
14456 | c_parser_consume_token (parser); | |
14457 | if (TREE_CODE (array_type) == POINTER_TYPE) | |
14458 | { | |
14459 | error_at (loc, "start-index and length fields necessary for " | |
14460 | "using array notations in pointers"); | |
14461 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
14462 | return error_mark_node; | |
14463 | } | |
14464 | if (TREE_CODE (array_type) == FUNCTION_TYPE) | |
14465 | { | |
14466 | error_at (loc, "array notations cannot be used with function " | |
14467 | "type"); | |
14468 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
14469 | return error_mark_node; | |
14470 | } | |
36536d79 BI |
14471 | array_type_domain = TYPE_DOMAIN (array_type); |
14472 | ||
14473 | if (!array_type_domain) | |
14474 | { | |
14475 | error_at (loc, "start-index and length fields necessary for " | |
14476 | "using array notations in dimensionless arrays"); | |
14477 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
14478 | return error_mark_node; | |
14479 | } | |
14480 | ||
14481 | start_index = TYPE_MINVAL (array_type_domain); | |
14482 | start_index = fold_build1 (CONVERT_EXPR, ptrdiff_type_node, | |
14483 | start_index); | |
14484 | if (!TYPE_MAXVAL (array_type_domain) | |
14485 | || !TREE_CONSTANT (TYPE_MAXVAL (array_type_domain))) | |
14486 | { | |
14487 | error_at (loc, "start-index and length fields necessary for " | |
14488 | "using array notations in variable-length arrays"); | |
14489 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
14490 | return error_mark_node; | |
14491 | } | |
14492 | end_index = TYPE_MAXVAL (array_type_domain); | |
14493 | end_index = fold_build2 (PLUS_EXPR, TREE_TYPE (end_index), | |
14494 | end_index, integer_one_node); | |
14495 | end_index = fold_build1 (CONVERT_EXPR, ptrdiff_type_node, end_index); | |
14496 | stride = build_int_cst (integer_type_node, 1); | |
14497 | stride = fold_build1 (CONVERT_EXPR, ptrdiff_type_node, stride); | |
14498 | } | |
14499 | else if (initial_index != error_mark_node) | |
14500 | { | |
14501 | /* If we are here, then there should be 2 possibilities: | |
14502 | 1. Array [EXPR : EXPR] | |
14503 | 2. Array [EXPR : EXPR : EXPR] | |
14504 | */ | |
14505 | start_index = initial_index; | |
14506 | ||
14507 | if (TREE_CODE (array_type) == FUNCTION_TYPE) | |
14508 | { | |
14509 | error_at (loc, "array notations cannot be used with function " | |
14510 | "type"); | |
14511 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, NULL); | |
14512 | return error_mark_node; | |
14513 | } | |
36536d79 | 14514 | c_parser_consume_token (parser); /* consume the ':' */ |
267bac10 JM |
14515 | struct c_expr ce = c_parser_expression (parser); |
14516 | ce = convert_lvalue_to_rvalue (loc, ce, false, false); | |
14517 | end_index = ce.value; | |
36536d79 BI |
14518 | if (!end_index || end_index == error_mark_node) |
14519 | { | |
14520 | c_parser_skip_to_end_of_block_or_statement (parser); | |
14521 | return error_mark_node; | |
14522 | } | |
14523 | if (c_parser_peek_token (parser)->type == CPP_COLON) | |
14524 | { | |
14525 | c_parser_consume_token (parser); | |
267bac10 JM |
14526 | ce = c_parser_expression (parser); |
14527 | ce = convert_lvalue_to_rvalue (loc, ce, false, false); | |
14528 | stride = ce.value; | |
36536d79 BI |
14529 | if (!stride || stride == error_mark_node) |
14530 | { | |
14531 | c_parser_skip_to_end_of_block_or_statement (parser); | |
14532 | return error_mark_node; | |
14533 | } | |
14534 | } | |
14535 | } | |
14536 | else | |
14537 | c_parser_error (parser, "expected array notation expression"); | |
14538 | } | |
14539 | else | |
14540 | c_parser_error (parser, "expected array notation expression"); | |
14541 | ||
14542 | c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, "expected %<]%>"); | |
14543 | ||
14544 | value_tree = build_array_notation_ref (loc, array_value, start_index, | |
14545 | end_index, stride, type); | |
14546 | if (value_tree != error_mark_node) | |
14547 | SET_EXPR_LOCATION (value_tree, loc); | |
14548 | return value_tree; | |
14549 | } | |
14550 | ||
d4a10d0a | 14551 | #include "gt-c-c-parser.h" |