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b0278d39 | 1 | /* The lang_hooks data structure. |
711789cc | 2 | Copyright (C) 2001-2013 Free Software Foundation, Inc. |
e8602e56 | 3 | |
4642865b | 4 | This file is part of GCC. |
e8602e56 | 5 | |
4642865b | 6 | GCC is free software; you can redistribute it and/or modify |
e8602e56 | 7 | it under the terms of the GNU General Public License as published by |
8c4c00c1 | 8 | the Free Software Foundation; either version 3, or (at your option) |
e8602e56 | 9 | any later version. |
10 | ||
4642865b | 11 | GCC is distributed in the hope that it will be useful, |
e8602e56 | 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
8c4c00c1 | 17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
e8602e56 | 19 | |
20 | #ifndef GCC_LANG_HOOKS_H | |
21 | #define GCC_LANG_HOOKS_H | |
22 | ||
4a020a8c | 23 | /* FIXME: This file should be #include-d after tree.h (for enum tree_code). */ |
b467ecc1 | 24 | |
b8c23db3 | 25 | struct diagnostic_info; |
6c7ff025 | 26 | |
1e8e9920 | 27 | struct gimplify_omp_ctx; |
28 | ||
1c79cc8c | 29 | struct array_descr_info; |
30 | ||
b7fced5e | 31 | /* A print hook for print_tree (). */ |
3ad4992f | 32 | typedef void (*lang_print_tree_hook) (FILE *, tree, int indent); |
b7fced5e | 33 | |
03a61d93 | 34 | enum classify_record |
35 | { RECORD_IS_STRUCT, RECORD_IS_CLASS, RECORD_IS_INTERFACE }; | |
36 | ||
b0278d39 | 37 | /* The following hooks are documented in langhooks.c. Must not be |
38 | NULL. */ | |
39 | ||
40 | struct lang_hooks_for_tree_inlining | |
41 | { | |
1f8a6ff8 | 42 | bool (*var_mod_type_p) (tree, tree); |
b0278d39 | 43 | }; |
44 | ||
3119c950 | 45 | /* The following hooks are used by tree-dump.c. */ |
46 | ||
47 | struct lang_hooks_for_tree_dump | |
48 | { | |
6ef828f9 | 49 | /* Dump language-specific parts of tree nodes. Returns nonzero if it |
3119c950 | 50 | does not want the usual dumping of the second argument. */ |
3ad4992f | 51 | bool (*dump_tree) (void *, tree); |
3119c950 | 52 | |
53 | /* Determine type qualifiers in a language-specific way. */ | |
f8fd23c0 | 54 | int (*type_quals) (const_tree); |
3119c950 | 55 | }; |
56 | ||
a1f71e15 | 57 | /* Hooks related to types. */ |
58 | ||
59 | struct lang_hooks_for_types | |
60 | { | |
771d21fa | 61 | /* Return a new type (with the indicated CODE), doing whatever |
62 | language-specific processing is required. */ | |
3ad4992f | 63 | tree (*make_type) (enum tree_code); |
8851e806 | 64 | |
03a61d93 | 65 | /* Return what kind of RECORD_TYPE this is, mainly for purposes of |
66 | debug information. If not defined, record types are assumed to | |
67 | be structures. */ | |
68 | enum classify_record (*classify_record) (tree); | |
69 | ||
771d21fa | 70 | /* Given MODE and UNSIGNEDP, return a suitable type-tree with that |
71 | mode. */ | |
3ad4992f | 72 | tree (*type_for_mode) (enum machine_mode, int); |
771d21fa | 73 | |
74 | /* Given PRECISION and UNSIGNEDP, return a suitable type-tree for an | |
75 | integer type with at least that precision. */ | |
3ad4992f | 76 | tree (*type_for_size) (unsigned, int); |
4070745f | 77 | |
0e4744ac | 78 | /* True if the type is an instantiation of a generic type, |
79 | e.g. C++ template implicit specializations. */ | |
f8fd23c0 | 80 | bool (*generic_p) (const_tree); |
0e4744ac | 81 | |
7c48f38c | 82 | /* Returns the TREE_VEC of elements of a given generic argument pack. */ |
83 | tree (*get_argument_pack_elems) (const_tree); | |
84 | ||
63c62881 | 85 | /* Given a type, apply default promotions to unnamed function |
86 | arguments and return the new type. Return the same type if no | |
87 | change. Required by any language that supports variadic | |
1fa3a8f6 | 88 | arguments. The default hook dies. */ |
3ad4992f | 89 | tree (*type_promotes_to) (tree); |
63c62881 | 90 | |
b268e47e | 91 | /* Register TYPE as a builtin type with the indicated NAME. The |
92 | TYPE is placed in the outermost lexical scope. The semantics | |
93 | should be analogous to: | |
94 | ||
95 | typedef TYPE NAME; | |
96 | ||
97 | in C. The default hook ignores the declaration. */ | |
98 | void (*register_builtin_type) (tree, const char *); | |
99 | ||
1dd25100 | 100 | /* This routine is called in tree.c to print an error message for |
101 | invalid use of an incomplete type. VALUE is the expression that | |
102 | was used (or 0 if that isn't known) and TYPE is the type that was | |
103 | invalid. */ | |
f8fd23c0 | 104 | void (*incomplete_type_error) (const_tree value, const_tree type); |
a26d3281 | 105 | |
b225134e | 106 | /* Called from assign_temp to return the maximum size, if there is one, |
107 | for a type. */ | |
f8fd23c0 | 108 | tree (*max_size) (const_tree); |
b225134e | 109 | |
1e8e9920 | 110 | /* Register language specific type size variables as potentially OpenMP |
111 | firstprivate variables. */ | |
112 | void (*omp_firstprivatize_type_sizes) (struct gimplify_omp_ctx *, tree); | |
113 | ||
bc7bff74 | 114 | /* Return true if TYPE is a mappable type. */ |
115 | bool (*omp_mappable_type) (tree type); | |
116 | ||
743f8dd1 | 117 | /* Return TRUE if TYPE1 and TYPE2 are identical for type hashing purposes. |
118 | Called only after doing all language independent checks. | |
119 | At present, this function is only called when both TYPE1 and TYPE2 are | |
120 | FUNCTION_TYPEs. */ | |
121 | bool (*type_hash_eq) (const_tree, const_tree); | |
122 | ||
1c79cc8c | 123 | /* Return TRUE if TYPE uses a hidden descriptor and fills in information |
124 | for the debugger about the array bounds, strides, etc. */ | |
125 | bool (*get_array_descr_info) (const_tree, struct array_descr_info *); | |
126 | ||
a9538d68 | 127 | /* Fill in information for the debugger about the bounds of TYPE. */ |
128 | void (*get_subrange_bounds) (const_tree, tree *, tree *); | |
129 | ||
818dee1b | 130 | /* A type descriptive of TYPE's complex layout generated to help the |
131 | debugger to decode variable-length or self-referential constructs. | |
132 | This is only used for the AT_GNAT_descriptive_type DWARF attribute. */ | |
133 | tree (*descriptive_type) (const_tree); | |
134 | ||
d991e6e8 | 135 | /* If we requested a pointer to a vector, build up the pointers that |
136 | we stripped off while looking for the inner type. Similarly for | |
137 | return values from functions. The argument TYPE is the top of the | |
138 | chain, and BOTTOM is the new type which we will point to. */ | |
139 | tree (*reconstruct_complex_type) (tree, tree); | |
a1f71e15 | 140 | }; |
141 | ||
20325f61 | 142 | /* Language hooks related to decls and the symbol table. */ |
143 | ||
144 | struct lang_hooks_for_decls | |
145 | { | |
1d2bb655 | 146 | /* Return true if we are in the global binding level. This hook is really |
147 | needed only if the language supports variable-sized types at the global | |
148 | level, i.e. declared outside subprograms. */ | |
149 | bool (*global_bindings_p) (void); | |
20325f61 | 150 | |
20325f61 | 151 | /* Function to add a decl to the current scope level. Takes one |
152 | argument, a decl to add. Returns that decl, or, if the same | |
153 | symbol is already declared, may return a different decl for that | |
154 | name. */ | |
3ad4992f | 155 | tree (*pushdecl) (tree); |
20325f61 | 156 | |
157 | /* Returns the chain of decls so far in the current scope level. */ | |
3ad4992f | 158 | tree (*getdecls) (void); |
8d58a5a7 | 159 | |
cb3582e7 | 160 | /* Returns true if DECL is explicit member function. */ |
161 | bool (*function_decl_explicit_p) (tree); | |
162 | ||
7c48f38c | 163 | /* Returns True if the parameter is a generic parameter decl |
164 | of a generic type, e.g a template template parameter for the C++ FE. */ | |
165 | bool (*generic_generic_parameter_decl_p) (const_tree); | |
166 | ||
5d1e31fa | 167 | /* Determine if a function parameter got expanded from a |
168 | function parameter pack. */ | |
169 | bool (*function_parm_expanded_from_pack_p) (tree, tree); | |
170 | ||
171 | /* Returns the generic declaration of a generic function instantiations. */ | |
172 | tree (*get_generic_function_decl) (const_tree); | |
173 | ||
8d58a5a7 | 174 | /* Returns true when we should warn for an unused global DECL. |
175 | We will already have checked that it has static binding. */ | |
f8fd23c0 | 176 | bool (*warn_unused_global) (const_tree); |
28db4d96 | 177 | |
178 | /* Obtain a list of globals and do final output on them at end | |
179 | of compilation */ | |
3ad4992f | 180 | void (*final_write_globals) (void); |
e2e9c55b | 181 | |
182 | /* True if this decl may be called via a sibcall. */ | |
9f627b1a | 183 | bool (*ok_for_sibcall) (const_tree); |
537cd941 | 184 | |
1e8e9920 | 185 | /* True if OpenMP should privatize what this DECL points to rather |
186 | than the DECL itself. */ | |
9f627b1a | 187 | bool (*omp_privatize_by_reference) (const_tree); |
1e8e9920 | 188 | |
189 | /* Return sharing kind if OpenMP sharing attribute of DECL is | |
190 | predetermined, OMP_CLAUSE_DEFAULT_UNSPECIFIED otherwise. */ | |
191 | enum omp_clause_default_kind (*omp_predetermined_sharing) (tree); | |
192 | ||
4ad75159 | 193 | /* Return decl that should be reported for DEFAULT(NONE) failure |
194 | diagnostics. Usually the DECL passed in. */ | |
195 | tree (*omp_report_decl) (tree); | |
196 | ||
1e8e9920 | 197 | /* Return true if DECL's DECL_VALUE_EXPR (if any) should be |
198 | disregarded in OpenMP construct, because it is going to be | |
199 | remapped during OpenMP lowering. SHARED is true if DECL | |
200 | is going to be shared, false if it is going to be privatized. */ | |
201 | bool (*omp_disregard_value_expr) (tree, bool); | |
202 | ||
203 | /* Return true if DECL that is shared iff SHARED is true should | |
204 | be put into OMP_CLAUSE_PRIVATE_DEBUG. */ | |
205 | bool (*omp_private_debug_clause) (tree, bool); | |
206 | ||
fd6481cf | 207 | /* Return true if DECL in private clause needs |
208 | OMP_CLAUSE_PRIVATE_OUTER_REF on the private clause. */ | |
209 | bool (*omp_private_outer_ref) (tree); | |
210 | ||
1e8e9920 | 211 | /* Build and return code for a default constructor for DECL in |
fd6481cf | 212 | response to CLAUSE. OUTER is corresponding outer region's |
213 | variable if needed. Return NULL if nothing to be done. */ | |
214 | tree (*omp_clause_default_ctor) (tree clause, tree decl, tree outer); | |
1e8e9920 | 215 | |
216 | /* Build and return code for a copy constructor from SRC to DST. */ | |
217 | tree (*omp_clause_copy_ctor) (tree clause, tree dst, tree src); | |
218 | ||
219 | /* Similarly, except use an assignment operator instead. */ | |
220 | tree (*omp_clause_assign_op) (tree clause, tree dst, tree src); | |
221 | ||
222 | /* Build and return code destructing DECL. Return NULL if nothing | |
223 | to be done. */ | |
224 | tree (*omp_clause_dtor) (tree clause, tree decl); | |
fd6481cf | 225 | |
226 | /* Do language specific checking on an implicitly determined clause. */ | |
227 | void (*omp_finish_clause) (tree clause); | |
20325f61 | 228 | }; |
229 | ||
7bfefa9d | 230 | /* Language hooks related to LTO serialization. */ |
231 | ||
232 | struct lang_hooks_for_lto | |
233 | { | |
234 | /* Begin a new LTO section named NAME. */ | |
235 | void (*begin_section) (const char *name); | |
236 | ||
237 | /* Write DATA of length LEN to the currently open LTO section. BLOCK is a | |
238 | pointer to the dynamically allocated memory containing DATA. The | |
239 | append_data function is responsible for freeing it when it is no longer | |
240 | needed. */ | |
241 | void (*append_data) (const void *data, size_t len, void *block); | |
242 | ||
243 | /* End the previously begun LTO section. */ | |
244 | void (*end_section) (void); | |
245 | }; | |
246 | ||
b0278d39 | 247 | /* Language-specific hooks. See langhooks-def.h for defaults. */ |
248 | ||
249 | struct lang_hooks | |
250 | { | |
d19bd1f0 | 251 | /* String identifying the front end. e.g. "GNU C++". */ |
252 | const char *name; | |
253 | ||
254 | /* sizeof (struct lang_identifier), so make_node () creates | |
255 | identifier nodes long enough for the language-specific slots. */ | |
256 | size_t identifier_size; | |
257 | ||
34e5cced | 258 | /* Remove any parts of the tree that are used only by the FE. */ |
259 | void (*free_lang_data) (tree); | |
260 | ||
ce45a448 | 261 | /* Determines the size of any language-specific tcc_constant or |
262 | tcc_exceptional nodes. Since it is called from make_node, the | |
1fa3a8f6 | 263 | only information available is the tree code. Expected to die |
ce45a448 | 264 | on unrecognized codes. */ |
3ad4992f | 265 | size_t (*tree_size) (enum tree_code); |
295e387a | 266 | |
e88d34f6 | 267 | /* Return the language mask used for converting argv into a sequence |
268 | of options. */ | |
269 | unsigned int (*option_lang_mask) (void); | |
270 | ||
f3f006ad | 271 | /* Initialize variables in an options structure. */ |
272 | void (*init_options_struct) (struct gcc_options *opts); | |
273 | ||
e88d34f6 | 274 | /* After the initialize_diagnostics hook is called, do any simple |
f3f006ad | 275 | initialization needed before any calls to handle_option, other |
276 | than that done by the init_options_struct hook. */ | |
e88d34f6 | 277 | void (*init_options) (unsigned int decoded_options_count, |
278 | struct cl_decoded_option *decoded_options); | |
b0278d39 | 279 | |
f63da8d3 | 280 | /* Callback used to perform language-specific initialization for the |
281 | global diagnostic context structure. */ | |
24ca3b4e | 282 | void (*initialize_diagnostics) (diagnostic_context *); |
f63da8d3 | 283 | |
e88d34f6 | 284 | /* Return true if a warning should be given about option OPTION, |
285 | which is for the wrong language, false if it should be quietly | |
286 | ignored. */ | |
287 | bool (*complain_wrong_lang_p) (const struct cl_option *option); | |
288 | ||
5457b645 | 289 | /* Handle the switch CODE, which has real type enum opt_code from |
290 | options.h. If the switch takes an argument, it is passed in ARG | |
917bbcab | 291 | which points to permanent storage. The handler is responsible for |
5457b645 | 292 | checking whether ARG is NULL, which indicates that no argument |
293 | was in fact supplied. For -f and -W switches, VALUE is 1 or 0 | |
b78351e5 | 294 | for the positive and negative forms respectively. HANDLERS should |
3c6c0e40 | 295 | be passed to any recursive handle_option calls. LOC is the |
296 | location of the option. | |
5457b645 | 297 | |
b78351e5 | 298 | Return true if the switch is valid, false if invalid. */ |
299 | bool (*handle_option) (size_t code, const char *arg, int value, int kind, | |
3c6c0e40 | 300 | location_t loc, |
b78351e5 | 301 | const struct cl_option_handlers *handlers); |
5457b645 | 302 | |
03bde601 | 303 | /* Called when all command line options have been parsed to allow |
304 | further processing and initialization | |
dd436eaf | 305 | |
03bde601 | 306 | Should return true to indicate that a compiler back-end is |
307 | not required, such as with the -E option. | |
3ad4992f | 308 | |
6ef828f9 | 309 | If errorcount is nonzero after this call the compiler exits |
dd436eaf | 310 | immediately and the finish hook is not called. */ |
3ad4992f | 311 | bool (*post_options) (const char **); |
03bde601 | 312 | |
313 | /* Called after post_options to initialize the front end. Return | |
314 | false to indicate that no further compilation be performed, in | |
315 | which case the finish hook is called immediately. */ | |
3ad4992f | 316 | bool (*init) (void); |
435fb09b | 317 | |
318 | /* Called at the end of compilation, as a finalizer. */ | |
3ad4992f | 319 | void (*finish) (void); |
435fb09b | 320 | |
b8ba44e7 | 321 | /* Parses the entire file. */ |
322 | void (*parse_file) (void); | |
b78207a0 | 323 | |
b75409ba | 324 | /* Determines if it's ok for a function to have no noreturn attribute. */ |
325 | bool (*missing_noreturn_ok_p) (tree); | |
326 | ||
b0278d39 | 327 | /* Called to obtain the alias set to be used for an expression or type. |
328 | Returns -1 if the language does nothing special for it. */ | |
32c2fdea | 329 | alias_set_type (*get_alias_set) (tree); |
b0278d39 | 330 | |
ee23fd7b | 331 | /* Function to finish handling an incomplete decl at the end of |
332 | compilation. Default hook is does nothing. */ | |
3ad4992f | 333 | void (*finish_incomplete_decl) (tree); |
ee23fd7b | 334 | |
dbc42b78 | 335 | /* Replace the DECL_LANG_SPECIFIC data, which may be NULL, of the |
336 | DECL_NODE with a newly GC-allocated copy. */ | |
3ad4992f | 337 | void (*dup_lang_specific_decl) (tree); |
dbc42b78 | 338 | |
d1f6c8f2 | 339 | /* Set the DECL_ASSEMBLER_NAME for a node. If it is the sort of |
340 | thing that the assembler should talk about, set | |
341 | DECL_ASSEMBLER_NAME to an appropriate IDENTIFIER_NODE. | |
342 | Otherwise, set it to the ERROR_MARK_NODE to ensure that the | |
343 | assembler does not talk about it. */ | |
3ad4992f | 344 | void (*set_decl_assembler_name) (tree); |
d1f6c8f2 | 345 | |
b7fced5e | 346 | /* The front end can add its own statistics to -fmem-report with |
347 | this hook. It should output to stderr. */ | |
3ad4992f | 348 | void (*print_statistics) (void); |
b7fced5e | 349 | |
ce45a448 | 350 | /* Called by print_tree when there is a tree of class tcc_exceptional |
351 | that it doesn't know how to display. */ | |
b7fced5e | 352 | lang_print_tree_hook print_xnode; |
353 | ||
ce45a448 | 354 | /* Called to print language-dependent parts of tcc_decl, tcc_type, |
355 | and IDENTIFIER_NODE nodes. */ | |
b7fced5e | 356 | lang_print_tree_hook print_decl; |
357 | lang_print_tree_hook print_type; | |
358 | lang_print_tree_hook print_identifier; | |
359 | ||
96554925 | 360 | /* Computes the name to use to print a declaration. DECL is the |
361 | non-NULL declaration in question. VERBOSITY determines what | |
362 | information will be printed: 0: DECL_NAME, demangled as | |
363 | necessary. 1: and scope information. 2: and any other | |
364 | information that might be interesting, such as function parameter | |
abd3e6b5 | 365 | types in C++. The name is in the internal character set and |
366 | needs to be converted to the locale character set of diagnostics, | |
367 | or to the execution character set for strings such as | |
368 | __PRETTY_FUNCTION__. */ | |
3ad4992f | 369 | const char *(*decl_printable_name) (tree decl, int verbosity); |
96554925 | 370 | |
7d709201 | 371 | /* Computes the dwarf-2/3 name for a tree. VERBOSITY determines what |
372 | information will be printed: 0: DECL_NAME, demangled as | |
373 | necessary. 1: and scope information. */ | |
374 | const char *(*dwarf_name) (tree, int verbosity); | |
375 | ||
4ee9c684 | 376 | /* This compares two types for equivalence ("compatible" in C-based languages). |
377 | This routine should only return 1 if it is sure. It should not be used | |
378 | in contexts where erroneously returning 0 causes problems. */ | |
379 | int (*types_compatible_p) (tree x, tree y); | |
380 | ||
6c7ff025 | 381 | /* Called by report_error_function to print out function name. */ |
24ca3b4e | 382 | void (*print_error_function) (diagnostic_context *, const char *, |
b8c23db3 | 383 | struct diagnostic_info *); |
6c7ff025 | 384 | |
624d37a6 | 385 | /* Convert a character from the host's to the target's character |
386 | set. The character should be in what C calls the "basic source | |
387 | character set" (roughly, the set of characters defined by plain | |
388 | old ASCII). The default is to return the character unchanged, | |
389 | which is correct in most circumstances. Note that both argument | |
390 | and result should be sign-extended under -fsigned-char, | |
391 | zero-extended under -fno-signed-char. */ | |
392 | HOST_WIDE_INT (*to_target_charset) (HOST_WIDE_INT); | |
393 | ||
f8e93a2e | 394 | /* Pointers to machine-independent attribute tables, for front ends |
395 | using attribs.c. If one is NULL, it is ignored. Respectively, a | |
396 | table of attributes specific to the language, a table of | |
397 | attributes common to two or more languages (to allow easy | |
398 | sharing), and a table of attributes for checking formats. */ | |
399 | const struct attribute_spec *attribute_table; | |
400 | const struct attribute_spec *common_attribute_table; | |
401 | const struct attribute_spec *format_attribute_table; | |
402 | ||
b0278d39 | 403 | struct lang_hooks_for_tree_inlining tree_inlining; |
8851e806 | 404 | |
3119c950 | 405 | struct lang_hooks_for_tree_dump tree_dump; |
b0278d39 | 406 | |
20325f61 | 407 | struct lang_hooks_for_decls decls; |
408 | ||
a1f71e15 | 409 | struct lang_hooks_for_types types; |
410 | ||
7bfefa9d | 411 | struct lang_hooks_for_lto lto; |
412 | ||
48adf3f3 | 413 | /* Returns a TREE_VEC of the generic parameters of an instantiation of |
414 | a generic type or decl, e.g. C++ template instantiation. If | |
415 | TREE_CHAIN of the return value is set, it is an INTEGER_CST | |
416 | indicating how many of the elements are non-default. */ | |
7c48f38c | 417 | tree (*get_innermost_generic_parms) (const_tree); |
418 | ||
419 | /* Returns the TREE_VEC of arguments of an instantiation | |
420 | of a generic type of decl, e.g. C++ template instantiation. */ | |
421 | tree (*get_innermost_generic_args) (const_tree); | |
422 | ||
5d1e31fa | 423 | /* Determine if a tree is a function parameter pack. */ |
424 | bool (*function_parameter_pack_p) (const_tree); | |
425 | ||
4ee9c684 | 426 | /* Perform language-specific gimplification on the argument. Returns an |
427 | enum gimplify_status, though we can't see that type here. */ | |
75a70cf9 | 428 | int (*gimplify_expr) (tree *, gimple_seq *, gimple_seq *); |
4ee9c684 | 429 | |
54be5d7e | 430 | /* Do language specific processing in the builtin function DECL */ |
431 | tree (*builtin_function) (tree decl); | |
e60d3615 | 432 | |
24470055 | 433 | /* Like builtin_function, but make sure the scope is the external scope. |
434 | This is used to delay putting in back end builtin functions until the ISA | |
435 | that defines the builtin is declared via function specific target options, | |
436 | which can save memory for machines like the x86_64 that have multiple | |
437 | ISAs. If this points to the same function as builtin_function, the | |
438 | backend must add all of the builtins at program initialization time. */ | |
439 | tree (*builtin_function_ext_scope) (tree decl); | |
440 | ||
5ded8c6f | 441 | /* Used to set up the tree_contains_structure array for a frontend. */ |
442 | void (*init_ts) (void); | |
443 | ||
750ad201 | 444 | /* Called by recompute_tree_invariant_for_addr_expr to go from EXPR |
c7d4e749 | 445 | to a contained expression or DECL, possibly updating *TC or *SE |
446 | if in the process TREE_CONSTANT or TREE_SIDE_EFFECTS need updating. */ | |
447 | tree (*expr_to_decl) (tree expr, bool *tc, bool *se); | |
54d7165a | 448 | |
58d82cd0 | 449 | /* The EH personality function decl. */ |
450 | tree (*eh_personality) (void); | |
451 | ||
452 | /* Map a type to a runtime object to match type. */ | |
453 | tree (*eh_runtime_type) (tree); | |
454 | ||
596981c8 | 455 | /* If non-NULL, this is a function that returns a function decl to be |
456 | executed if an unhandled exception is propagated out of a cleanup | |
457 | region. For example, in C++, an exception thrown by a destructor | |
458 | during stack unwinding is required to result in a call to | |
459 | `std::terminate', so the C++ version of this function returns a | |
460 | FUNCTION_DECL for `std::terminate'. */ | |
461 | tree (*eh_protect_cleanup_actions) (void); | |
462 | ||
6cb25bec | 463 | /* Return true if a stmt can fallthru. Used by block_may_fallthru |
464 | to possibly handle language trees. */ | |
465 | bool (*block_may_fallthru) (const_tree); | |
466 | ||
471eff36 | 467 | /* True if this language uses __cxa_end_cleanup when the ARM EABI |
468 | is enabled. */ | |
469 | bool eh_use_cxa_end_cleanup; | |
470 | ||
f96dd706 | 471 | /* True if this language requires deep unsharing of tree nodes prior to |
472 | gimplification. */ | |
473 | bool deep_unsharing; | |
474 | ||
3119c950 | 475 | /* Whenever you add entries here, make sure you adjust langhooks-def.h |
b0278d39 | 476 | and langhooks.c accordingly. */ |
477 | }; | |
478 | ||
479 | /* Each front end provides its own. */ | |
34e5cced | 480 | extern struct lang_hooks lang_hooks; |
549aab72 | 481 | |
54be5d7e | 482 | extern tree add_builtin_function (const char *name, tree type, |
483 | int function_code, enum built_in_class cl, | |
484 | const char *library_name, | |
485 | tree attrs); | |
e8602e56 | 486 | |
24470055 | 487 | extern tree add_builtin_function_ext_scope (const char *name, tree type, |
488 | int function_code, | |
489 | enum built_in_class cl, | |
490 | const char *library_name, | |
491 | tree attrs); | |
549aab72 | 492 | extern tree add_builtin_type (const char *name, tree type); |
493 | ||
e8602e56 | 494 | #endif /* GCC_LANG_HOOKS_H */ |