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726a989a RB |
1 | /* Gimple IR support functions. |
2 | ||
ddb555ed | 3 | Copyright 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
726a989a RB |
4 | Contributed by Aldy Hernandez <aldyh@redhat.com> |
5 | ||
6 | This file is part of GCC. | |
7 | ||
8 | GCC is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 3, or (at your option) any later | |
11 | version. | |
12 | ||
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GCC; see the file COPYING3. If not see | |
20 | <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | #include "config.h" | |
23 | #include "system.h" | |
24 | #include "coretypes.h" | |
25 | #include "tm.h" | |
d7f09764 | 26 | #include "target.h" |
726a989a RB |
27 | #include "tree.h" |
28 | #include "ggc.h" | |
726a989a RB |
29 | #include "hard-reg-set.h" |
30 | #include "basic-block.h" | |
31 | #include "gimple.h" | |
32 | #include "diagnostic.h" | |
33 | #include "tree-flow.h" | |
34 | #include "value-prof.h" | |
35 | #include "flags.h" | |
d7f09764 | 36 | #include "alias.h" |
4537ec0c | 37 | #include "demangle.h" |
0f443ad0 | 38 | #include "langhooks.h" |
726a989a | 39 | |
d7f09764 DN |
40 | /* Global type table. FIXME lto, it should be possible to re-use some |
41 | of the type hashing routines in tree.c (type_hash_canon, type_hash_lookup, | |
42 | etc), but those assume that types were built with the various | |
43 | build_*_type routines which is not the case with the streamer. */ | |
0f443ad0 RG |
44 | static GTY((if_marked ("ggc_marked_p"), param_is (union tree_node))) |
45 | htab_t gimple_types; | |
4490cae6 RG |
46 | static GTY((if_marked ("ggc_marked_p"), param_is (union tree_node))) |
47 | htab_t gimple_canonical_types; | |
0f443ad0 RG |
48 | static GTY((if_marked ("tree_int_map_marked_p"), param_is (struct tree_int_map))) |
49 | htab_t type_hash_cache; | |
a844a60b RG |
50 | static GTY((if_marked ("tree_int_map_marked_p"), param_is (struct tree_int_map))) |
51 | htab_t canonical_type_hash_cache; | |
d7f09764 | 52 | |
f2c4a81c | 53 | /* All the tuples have their operand vector (if present) at the very bottom |
726a989a RB |
54 | of the structure. Therefore, the offset required to find the |
55 | operands vector the size of the structure minus the size of the 1 | |
56 | element tree array at the end (see gimple_ops). */ | |
f2c4a81c RH |
57 | #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) \ |
58 | (HAS_TREE_OP ? sizeof (struct STRUCT) - sizeof (tree) : 0), | |
6bc7bc14 | 59 | EXPORTED_CONST size_t gimple_ops_offset_[] = { |
f2c4a81c RH |
60 | #include "gsstruct.def" |
61 | }; | |
62 | #undef DEFGSSTRUCT | |
63 | ||
64 | #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) sizeof(struct STRUCT), | |
65 | static const size_t gsstruct_code_size[] = { | |
66 | #include "gsstruct.def" | |
67 | }; | |
68 | #undef DEFGSSTRUCT | |
69 | ||
70 | #define DEFGSCODE(SYM, NAME, GSSCODE) NAME, | |
71 | const char *const gimple_code_name[] = { | |
72 | #include "gimple.def" | |
73 | }; | |
74 | #undef DEFGSCODE | |
75 | ||
76 | #define DEFGSCODE(SYM, NAME, GSSCODE) GSSCODE, | |
77 | EXPORTED_CONST enum gimple_statement_structure_enum gss_for_code_[] = { | |
726a989a RB |
78 | #include "gimple.def" |
79 | }; | |
80 | #undef DEFGSCODE | |
81 | ||
82 | #ifdef GATHER_STATISTICS | |
83 | /* Gimple stats. */ | |
84 | ||
85 | int gimple_alloc_counts[(int) gimple_alloc_kind_all]; | |
86 | int gimple_alloc_sizes[(int) gimple_alloc_kind_all]; | |
87 | ||
88 | /* Keep in sync with gimple.h:enum gimple_alloc_kind. */ | |
89 | static const char * const gimple_alloc_kind_names[] = { | |
90 | "assignments", | |
91 | "phi nodes", | |
92 | "conditionals", | |
726a989a RB |
93 | "everything else" |
94 | }; | |
95 | ||
96 | #endif /* GATHER_STATISTICS */ | |
97 | ||
726a989a RB |
98 | /* Private API manipulation functions shared only with some |
99 | other files. */ | |
100 | extern void gimple_set_stored_syms (gimple, bitmap, bitmap_obstack *); | |
101 | extern void gimple_set_loaded_syms (gimple, bitmap, bitmap_obstack *); | |
102 | ||
103 | /* Gimple tuple constructors. | |
104 | Note: Any constructor taking a ``gimple_seq'' as a parameter, can | |
105 | be passed a NULL to start with an empty sequence. */ | |
106 | ||
107 | /* Set the code for statement G to CODE. */ | |
108 | ||
109 | static inline void | |
110 | gimple_set_code (gimple g, enum gimple_code code) | |
111 | { | |
112 | g->gsbase.code = code; | |
113 | } | |
114 | ||
726a989a RB |
115 | /* Return the number of bytes needed to hold a GIMPLE statement with |
116 | code CODE. */ | |
117 | ||
f2c4a81c | 118 | static inline size_t |
726a989a RB |
119 | gimple_size (enum gimple_code code) |
120 | { | |
f2c4a81c | 121 | return gsstruct_code_size[gss_for_code (code)]; |
726a989a RB |
122 | } |
123 | ||
726a989a RB |
124 | /* Allocate memory for a GIMPLE statement with code CODE and NUM_OPS |
125 | operands. */ | |
126 | ||
d7f09764 | 127 | gimple |
726a989a RB |
128 | gimple_alloc_stat (enum gimple_code code, unsigned num_ops MEM_STAT_DECL) |
129 | { | |
130 | size_t size; | |
131 | gimple stmt; | |
132 | ||
133 | size = gimple_size (code); | |
134 | if (num_ops > 0) | |
135 | size += sizeof (tree) * (num_ops - 1); | |
136 | ||
137 | #ifdef GATHER_STATISTICS | |
138 | { | |
139 | enum gimple_alloc_kind kind = gimple_alloc_kind (code); | |
140 | gimple_alloc_counts[(int) kind]++; | |
141 | gimple_alloc_sizes[(int) kind] += size; | |
142 | } | |
143 | #endif | |
144 | ||
a9429e29 | 145 | stmt = ggc_alloc_cleared_gimple_statement_d_stat (size PASS_MEM_STAT); |
726a989a RB |
146 | gimple_set_code (stmt, code); |
147 | gimple_set_num_ops (stmt, num_ops); | |
148 | ||
149 | /* Do not call gimple_set_modified here as it has other side | |
150 | effects and this tuple is still not completely built. */ | |
151 | stmt->gsbase.modified = 1; | |
355a7673 | 152 | gimple_init_singleton (stmt); |
726a989a RB |
153 | |
154 | return stmt; | |
155 | } | |
156 | ||
157 | /* Set SUBCODE to be the code of the expression computed by statement G. */ | |
158 | ||
159 | static inline void | |
160 | gimple_set_subcode (gimple g, unsigned subcode) | |
161 | { | |
162 | /* We only have 16 bits for the RHS code. Assert that we are not | |
163 | overflowing it. */ | |
164 | gcc_assert (subcode < (1 << 16)); | |
165 | g->gsbase.subcode = subcode; | |
166 | } | |
167 | ||
168 | ||
169 | ||
170 | /* Build a tuple with operands. CODE is the statement to build (which | |
171 | must be one of the GIMPLE_WITH_OPS tuples). SUBCODE is the sub-code | |
b8698a0f | 172 | for the new tuple. NUM_OPS is the number of operands to allocate. */ |
726a989a RB |
173 | |
174 | #define gimple_build_with_ops(c, s, n) \ | |
175 | gimple_build_with_ops_stat (c, s, n MEM_STAT_INFO) | |
176 | ||
177 | static gimple | |
b5b8b0ac | 178 | gimple_build_with_ops_stat (enum gimple_code code, unsigned subcode, |
726a989a RB |
179 | unsigned num_ops MEM_STAT_DECL) |
180 | { | |
181 | gimple s = gimple_alloc_stat (code, num_ops PASS_MEM_STAT); | |
182 | gimple_set_subcode (s, subcode); | |
183 | ||
184 | return s; | |
185 | } | |
186 | ||
187 | ||
188 | /* Build a GIMPLE_RETURN statement returning RETVAL. */ | |
189 | ||
190 | gimple | |
191 | gimple_build_return (tree retval) | |
192 | { | |
bbbbb16a | 193 | gimple s = gimple_build_with_ops (GIMPLE_RETURN, ERROR_MARK, 1); |
726a989a RB |
194 | if (retval) |
195 | gimple_return_set_retval (s, retval); | |
196 | return s; | |
197 | } | |
198 | ||
d086d311 RG |
199 | /* Reset alias information on call S. */ |
200 | ||
201 | void | |
202 | gimple_call_reset_alias_info (gimple s) | |
203 | { | |
204 | if (gimple_call_flags (s) & ECF_CONST) | |
205 | memset (gimple_call_use_set (s), 0, sizeof (struct pt_solution)); | |
206 | else | |
207 | pt_solution_reset (gimple_call_use_set (s)); | |
208 | if (gimple_call_flags (s) & (ECF_CONST|ECF_PURE|ECF_NOVOPS)) | |
209 | memset (gimple_call_clobber_set (s), 0, sizeof (struct pt_solution)); | |
210 | else | |
211 | pt_solution_reset (gimple_call_clobber_set (s)); | |
212 | } | |
213 | ||
21860814 JJ |
214 | /* Helper for gimple_build_call, gimple_build_call_valist, |
215 | gimple_build_call_vec and gimple_build_call_from_tree. Build the basic | |
216 | components of a GIMPLE_CALL statement to function FN with NARGS | |
217 | arguments. */ | |
726a989a RB |
218 | |
219 | static inline gimple | |
220 | gimple_build_call_1 (tree fn, unsigned nargs) | |
221 | { | |
bbbbb16a | 222 | gimple s = gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, nargs + 3); |
7c9577be RG |
223 | if (TREE_CODE (fn) == FUNCTION_DECL) |
224 | fn = build_fold_addr_expr (fn); | |
726a989a | 225 | gimple_set_op (s, 1, fn); |
f20ca725 | 226 | gimple_call_set_fntype (s, TREE_TYPE (TREE_TYPE (fn))); |
d086d311 | 227 | gimple_call_reset_alias_info (s); |
726a989a RB |
228 | return s; |
229 | } | |
230 | ||
231 | ||
232 | /* Build a GIMPLE_CALL statement to function FN with the arguments | |
233 | specified in vector ARGS. */ | |
234 | ||
235 | gimple | |
236 | gimple_build_call_vec (tree fn, VEC(tree, heap) *args) | |
237 | { | |
238 | unsigned i; | |
239 | unsigned nargs = VEC_length (tree, args); | |
240 | gimple call = gimple_build_call_1 (fn, nargs); | |
241 | ||
242 | for (i = 0; i < nargs; i++) | |
243 | gimple_call_set_arg (call, i, VEC_index (tree, args, i)); | |
244 | ||
245 | return call; | |
246 | } | |
247 | ||
248 | ||
249 | /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of | |
250 | arguments. The ... are the arguments. */ | |
251 | ||
252 | gimple | |
253 | gimple_build_call (tree fn, unsigned nargs, ...) | |
254 | { | |
255 | va_list ap; | |
256 | gimple call; | |
257 | unsigned i; | |
258 | ||
259 | gcc_assert (TREE_CODE (fn) == FUNCTION_DECL || is_gimple_call_addr (fn)); | |
260 | ||
261 | call = gimple_build_call_1 (fn, nargs); | |
262 | ||
263 | va_start (ap, nargs); | |
264 | for (i = 0; i < nargs; i++) | |
265 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
266 | va_end (ap); | |
267 | ||
268 | return call; | |
269 | } | |
270 | ||
271 | ||
21860814 JJ |
272 | /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of |
273 | arguments. AP contains the arguments. */ | |
274 | ||
275 | gimple | |
276 | gimple_build_call_valist (tree fn, unsigned nargs, va_list ap) | |
277 | { | |
278 | gimple call; | |
279 | unsigned i; | |
280 | ||
281 | gcc_assert (TREE_CODE (fn) == FUNCTION_DECL || is_gimple_call_addr (fn)); | |
282 | ||
283 | call = gimple_build_call_1 (fn, nargs); | |
284 | ||
285 | for (i = 0; i < nargs; i++) | |
286 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
287 | ||
288 | return call; | |
289 | } | |
290 | ||
291 | ||
25583c4f RS |
292 | /* Helper for gimple_build_call_internal and gimple_build_call_internal_vec. |
293 | Build the basic components of a GIMPLE_CALL statement to internal | |
294 | function FN with NARGS arguments. */ | |
295 | ||
296 | static inline gimple | |
297 | gimple_build_call_internal_1 (enum internal_fn fn, unsigned nargs) | |
298 | { | |
299 | gimple s = gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, nargs + 3); | |
300 | s->gsbase.subcode |= GF_CALL_INTERNAL; | |
301 | gimple_call_set_internal_fn (s, fn); | |
302 | gimple_call_reset_alias_info (s); | |
303 | return s; | |
304 | } | |
305 | ||
306 | ||
307 | /* Build a GIMPLE_CALL statement to internal function FN. NARGS is | |
308 | the number of arguments. The ... are the arguments. */ | |
309 | ||
310 | gimple | |
311 | gimple_build_call_internal (enum internal_fn fn, unsigned nargs, ...) | |
312 | { | |
313 | va_list ap; | |
314 | gimple call; | |
315 | unsigned i; | |
316 | ||
317 | call = gimple_build_call_internal_1 (fn, nargs); | |
318 | va_start (ap, nargs); | |
319 | for (i = 0; i < nargs; i++) | |
320 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
321 | va_end (ap); | |
322 | ||
323 | return call; | |
324 | } | |
325 | ||
326 | ||
327 | /* Build a GIMPLE_CALL statement to internal function FN with the arguments | |
328 | specified in vector ARGS. */ | |
329 | ||
330 | gimple | |
331 | gimple_build_call_internal_vec (enum internal_fn fn, VEC(tree, heap) *args) | |
332 | { | |
333 | unsigned i, nargs; | |
334 | gimple call; | |
335 | ||
336 | nargs = VEC_length (tree, args); | |
337 | call = gimple_build_call_internal_1 (fn, nargs); | |
338 | for (i = 0; i < nargs; i++) | |
339 | gimple_call_set_arg (call, i, VEC_index (tree, args, i)); | |
340 | ||
341 | return call; | |
342 | } | |
343 | ||
344 | ||
726a989a RB |
345 | /* Build a GIMPLE_CALL statement from CALL_EXPR T. Note that T is |
346 | assumed to be in GIMPLE form already. Minimal checking is done of | |
347 | this fact. */ | |
348 | ||
349 | gimple | |
350 | gimple_build_call_from_tree (tree t) | |
351 | { | |
352 | unsigned i, nargs; | |
353 | gimple call; | |
354 | tree fndecl = get_callee_fndecl (t); | |
355 | ||
356 | gcc_assert (TREE_CODE (t) == CALL_EXPR); | |
357 | ||
358 | nargs = call_expr_nargs (t); | |
359 | call = gimple_build_call_1 (fndecl ? fndecl : CALL_EXPR_FN (t), nargs); | |
360 | ||
361 | for (i = 0; i < nargs; i++) | |
362 | gimple_call_set_arg (call, i, CALL_EXPR_ARG (t, i)); | |
363 | ||
364 | gimple_set_block (call, TREE_BLOCK (t)); | |
365 | ||
366 | /* Carry all the CALL_EXPR flags to the new GIMPLE_CALL. */ | |
367 | gimple_call_set_chain (call, CALL_EXPR_STATIC_CHAIN (t)); | |
368 | gimple_call_set_tail (call, CALL_EXPR_TAILCALL (t)); | |
726a989a | 369 | gimple_call_set_return_slot_opt (call, CALL_EXPR_RETURN_SLOT_OPT (t)); |
63d2a353 MM |
370 | if (fndecl |
371 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
13e49da9 TV |
372 | && (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_ALLOCA |
373 | || DECL_FUNCTION_CODE (fndecl) == BUILT_IN_ALLOCA_WITH_ALIGN)) | |
63d2a353 MM |
374 | gimple_call_set_alloca_for_var (call, CALL_ALLOCA_FOR_VAR_P (t)); |
375 | else | |
376 | gimple_call_set_from_thunk (call, CALL_FROM_THUNK_P (t)); | |
726a989a | 377 | gimple_call_set_va_arg_pack (call, CALL_EXPR_VA_ARG_PACK (t)); |
9bb1a81b | 378 | gimple_call_set_nothrow (call, TREE_NOTHROW (t)); |
d665b6e5 | 379 | gimple_set_no_warning (call, TREE_NO_WARNING (t)); |
726a989a RB |
380 | |
381 | return call; | |
382 | } | |
383 | ||
384 | ||
385 | /* Extract the operands and code for expression EXPR into *SUBCODE_P, | |
0354c0c7 | 386 | *OP1_P, *OP2_P and *OP3_P respectively. */ |
726a989a RB |
387 | |
388 | void | |
0354c0c7 BS |
389 | extract_ops_from_tree_1 (tree expr, enum tree_code *subcode_p, tree *op1_p, |
390 | tree *op2_p, tree *op3_p) | |
726a989a | 391 | { |
82d6e6fc | 392 | enum gimple_rhs_class grhs_class; |
726a989a RB |
393 | |
394 | *subcode_p = TREE_CODE (expr); | |
82d6e6fc | 395 | grhs_class = get_gimple_rhs_class (*subcode_p); |
726a989a | 396 | |
0354c0c7 | 397 | if (grhs_class == GIMPLE_TERNARY_RHS) |
726a989a RB |
398 | { |
399 | *op1_p = TREE_OPERAND (expr, 0); | |
400 | *op2_p = TREE_OPERAND (expr, 1); | |
0354c0c7 BS |
401 | *op3_p = TREE_OPERAND (expr, 2); |
402 | } | |
403 | else if (grhs_class == GIMPLE_BINARY_RHS) | |
404 | { | |
405 | *op1_p = TREE_OPERAND (expr, 0); | |
406 | *op2_p = TREE_OPERAND (expr, 1); | |
407 | *op3_p = NULL_TREE; | |
726a989a | 408 | } |
82d6e6fc | 409 | else if (grhs_class == GIMPLE_UNARY_RHS) |
726a989a RB |
410 | { |
411 | *op1_p = TREE_OPERAND (expr, 0); | |
412 | *op2_p = NULL_TREE; | |
0354c0c7 | 413 | *op3_p = NULL_TREE; |
726a989a | 414 | } |
82d6e6fc | 415 | else if (grhs_class == GIMPLE_SINGLE_RHS) |
726a989a RB |
416 | { |
417 | *op1_p = expr; | |
418 | *op2_p = NULL_TREE; | |
0354c0c7 | 419 | *op3_p = NULL_TREE; |
726a989a RB |
420 | } |
421 | else | |
422 | gcc_unreachable (); | |
423 | } | |
424 | ||
425 | ||
426 | /* Build a GIMPLE_ASSIGN statement. | |
427 | ||
428 | LHS of the assignment. | |
429 | RHS of the assignment which can be unary or binary. */ | |
430 | ||
431 | gimple | |
432 | gimple_build_assign_stat (tree lhs, tree rhs MEM_STAT_DECL) | |
433 | { | |
434 | enum tree_code subcode; | |
0354c0c7 | 435 | tree op1, op2, op3; |
726a989a | 436 | |
0354c0c7 BS |
437 | extract_ops_from_tree_1 (rhs, &subcode, &op1, &op2, &op3); |
438 | return gimple_build_assign_with_ops_stat (subcode, lhs, op1, op2, op3 | |
726a989a RB |
439 | PASS_MEM_STAT); |
440 | } | |
441 | ||
442 | ||
443 | /* Build a GIMPLE_ASSIGN statement with sub-code SUBCODE and operands | |
444 | OP1 and OP2. If OP2 is NULL then SUBCODE must be of class | |
445 | GIMPLE_UNARY_RHS or GIMPLE_SINGLE_RHS. */ | |
446 | ||
447 | gimple | |
448 | gimple_build_assign_with_ops_stat (enum tree_code subcode, tree lhs, tree op1, | |
0354c0c7 | 449 | tree op2, tree op3 MEM_STAT_DECL) |
726a989a RB |
450 | { |
451 | unsigned num_ops; | |
452 | gimple p; | |
453 | ||
454 | /* Need 1 operand for LHS and 1 or 2 for the RHS (depending on the | |
455 | code). */ | |
456 | num_ops = get_gimple_rhs_num_ops (subcode) + 1; | |
b8698a0f | 457 | |
b5b8b0ac | 458 | p = gimple_build_with_ops_stat (GIMPLE_ASSIGN, (unsigned)subcode, num_ops |
726a989a RB |
459 | PASS_MEM_STAT); |
460 | gimple_assign_set_lhs (p, lhs); | |
461 | gimple_assign_set_rhs1 (p, op1); | |
462 | if (op2) | |
463 | { | |
464 | gcc_assert (num_ops > 2); | |
465 | gimple_assign_set_rhs2 (p, op2); | |
466 | } | |
467 | ||
0354c0c7 BS |
468 | if (op3) |
469 | { | |
470 | gcc_assert (num_ops > 3); | |
471 | gimple_assign_set_rhs3 (p, op3); | |
472 | } | |
473 | ||
726a989a RB |
474 | return p; |
475 | } | |
476 | ||
477 | ||
478 | /* Build a new GIMPLE_ASSIGN tuple and append it to the end of *SEQ_P. | |
479 | ||
480 | DST/SRC are the destination and source respectively. You can pass | |
481 | ungimplified trees in DST or SRC, in which case they will be | |
482 | converted to a gimple operand if necessary. | |
483 | ||
484 | This function returns the newly created GIMPLE_ASSIGN tuple. */ | |
485 | ||
5fd8300b | 486 | gimple |
726a989a | 487 | gimplify_assign (tree dst, tree src, gimple_seq *seq_p) |
b8698a0f | 488 | { |
726a989a RB |
489 | tree t = build2 (MODIFY_EXPR, TREE_TYPE (dst), dst, src); |
490 | gimplify_and_add (t, seq_p); | |
491 | ggc_free (t); | |
492 | return gimple_seq_last_stmt (*seq_p); | |
493 | } | |
494 | ||
495 | ||
496 | /* Build a GIMPLE_COND statement. | |
497 | ||
498 | PRED is the condition used to compare LHS and the RHS. | |
499 | T_LABEL is the label to jump to if the condition is true. | |
500 | F_LABEL is the label to jump to otherwise. */ | |
501 | ||
502 | gimple | |
503 | gimple_build_cond (enum tree_code pred_code, tree lhs, tree rhs, | |
504 | tree t_label, tree f_label) | |
505 | { | |
506 | gimple p; | |
507 | ||
508 | gcc_assert (TREE_CODE_CLASS (pred_code) == tcc_comparison); | |
509 | p = gimple_build_with_ops (GIMPLE_COND, pred_code, 4); | |
510 | gimple_cond_set_lhs (p, lhs); | |
511 | gimple_cond_set_rhs (p, rhs); | |
512 | gimple_cond_set_true_label (p, t_label); | |
513 | gimple_cond_set_false_label (p, f_label); | |
514 | return p; | |
515 | } | |
516 | ||
517 | ||
518 | /* Extract operands for a GIMPLE_COND statement out of COND_EXPR tree COND. */ | |
519 | ||
520 | void | |
521 | gimple_cond_get_ops_from_tree (tree cond, enum tree_code *code_p, | |
522 | tree *lhs_p, tree *rhs_p) | |
523 | { | |
524 | gcc_assert (TREE_CODE_CLASS (TREE_CODE (cond)) == tcc_comparison | |
525 | || TREE_CODE (cond) == TRUTH_NOT_EXPR | |
526 | || is_gimple_min_invariant (cond) | |
527 | || SSA_VAR_P (cond)); | |
528 | ||
529 | extract_ops_from_tree (cond, code_p, lhs_p, rhs_p); | |
530 | ||
531 | /* Canonicalize conditionals of the form 'if (!VAL)'. */ | |
532 | if (*code_p == TRUTH_NOT_EXPR) | |
533 | { | |
534 | *code_p = EQ_EXPR; | |
535 | gcc_assert (*lhs_p && *rhs_p == NULL_TREE); | |
e8160c9a | 536 | *rhs_p = build_zero_cst (TREE_TYPE (*lhs_p)); |
726a989a RB |
537 | } |
538 | /* Canonicalize conditionals of the form 'if (VAL)' */ | |
539 | else if (TREE_CODE_CLASS (*code_p) != tcc_comparison) | |
540 | { | |
541 | *code_p = NE_EXPR; | |
542 | gcc_assert (*lhs_p && *rhs_p == NULL_TREE); | |
e8160c9a | 543 | *rhs_p = build_zero_cst (TREE_TYPE (*lhs_p)); |
726a989a RB |
544 | } |
545 | } | |
546 | ||
547 | ||
548 | /* Build a GIMPLE_COND statement from the conditional expression tree | |
549 | COND. T_LABEL and F_LABEL are as in gimple_build_cond. */ | |
550 | ||
551 | gimple | |
552 | gimple_build_cond_from_tree (tree cond, tree t_label, tree f_label) | |
553 | { | |
554 | enum tree_code code; | |
555 | tree lhs, rhs; | |
556 | ||
557 | gimple_cond_get_ops_from_tree (cond, &code, &lhs, &rhs); | |
558 | return gimple_build_cond (code, lhs, rhs, t_label, f_label); | |
559 | } | |
560 | ||
561 | /* Set code, lhs, and rhs of a GIMPLE_COND from a suitable | |
562 | boolean expression tree COND. */ | |
563 | ||
564 | void | |
565 | gimple_cond_set_condition_from_tree (gimple stmt, tree cond) | |
566 | { | |
567 | enum tree_code code; | |
568 | tree lhs, rhs; | |
569 | ||
570 | gimple_cond_get_ops_from_tree (cond, &code, &lhs, &rhs); | |
571 | gimple_cond_set_condition (stmt, code, lhs, rhs); | |
572 | } | |
573 | ||
574 | /* Build a GIMPLE_LABEL statement for LABEL. */ | |
575 | ||
576 | gimple | |
577 | gimple_build_label (tree label) | |
578 | { | |
bbbbb16a | 579 | gimple p = gimple_build_with_ops (GIMPLE_LABEL, ERROR_MARK, 1); |
726a989a RB |
580 | gimple_label_set_label (p, label); |
581 | return p; | |
582 | } | |
583 | ||
584 | /* Build a GIMPLE_GOTO statement to label DEST. */ | |
585 | ||
586 | gimple | |
587 | gimple_build_goto (tree dest) | |
588 | { | |
bbbbb16a | 589 | gimple p = gimple_build_with_ops (GIMPLE_GOTO, ERROR_MARK, 1); |
726a989a RB |
590 | gimple_goto_set_dest (p, dest); |
591 | return p; | |
592 | } | |
593 | ||
594 | ||
595 | /* Build a GIMPLE_NOP statement. */ | |
596 | ||
b8698a0f | 597 | gimple |
726a989a RB |
598 | gimple_build_nop (void) |
599 | { | |
600 | return gimple_alloc (GIMPLE_NOP, 0); | |
601 | } | |
602 | ||
603 | ||
604 | /* Build a GIMPLE_BIND statement. | |
605 | VARS are the variables in BODY. | |
606 | BLOCK is the containing block. */ | |
607 | ||
608 | gimple | |
609 | gimple_build_bind (tree vars, gimple_seq body, tree block) | |
610 | { | |
611 | gimple p = gimple_alloc (GIMPLE_BIND, 0); | |
612 | gimple_bind_set_vars (p, vars); | |
613 | if (body) | |
614 | gimple_bind_set_body (p, body); | |
615 | if (block) | |
616 | gimple_bind_set_block (p, block); | |
617 | return p; | |
618 | } | |
619 | ||
620 | /* Helper function to set the simple fields of a asm stmt. | |
621 | ||
622 | STRING is a pointer to a string that is the asm blocks assembly code. | |
623 | NINPUT is the number of register inputs. | |
624 | NOUTPUT is the number of register outputs. | |
625 | NCLOBBERS is the number of clobbered registers. | |
626 | */ | |
627 | ||
628 | static inline gimple | |
b8698a0f | 629 | gimple_build_asm_1 (const char *string, unsigned ninputs, unsigned noutputs, |
1c384bf1 | 630 | unsigned nclobbers, unsigned nlabels) |
726a989a RB |
631 | { |
632 | gimple p; | |
633 | int size = strlen (string); | |
634 | ||
1c384bf1 RH |
635 | /* ASMs with labels cannot have outputs. This should have been |
636 | enforced by the front end. */ | |
637 | gcc_assert (nlabels == 0 || noutputs == 0); | |
638 | ||
bbbbb16a | 639 | p = gimple_build_with_ops (GIMPLE_ASM, ERROR_MARK, |
1c384bf1 | 640 | ninputs + noutputs + nclobbers + nlabels); |
726a989a RB |
641 | |
642 | p->gimple_asm.ni = ninputs; | |
643 | p->gimple_asm.no = noutputs; | |
644 | p->gimple_asm.nc = nclobbers; | |
1c384bf1 | 645 | p->gimple_asm.nl = nlabels; |
726a989a RB |
646 | p->gimple_asm.string = ggc_alloc_string (string, size); |
647 | ||
648 | #ifdef GATHER_STATISTICS | |
649 | gimple_alloc_sizes[(int) gimple_alloc_kind (GIMPLE_ASM)] += size; | |
650 | #endif | |
b8698a0f | 651 | |
726a989a RB |
652 | return p; |
653 | } | |
654 | ||
655 | /* Build a GIMPLE_ASM statement. | |
656 | ||
657 | STRING is the assembly code. | |
658 | NINPUT is the number of register inputs. | |
659 | NOUTPUT is the number of register outputs. | |
660 | NCLOBBERS is the number of clobbered registers. | |
661 | INPUTS is a vector of the input register parameters. | |
662 | OUTPUTS is a vector of the output register parameters. | |
1c384bf1 RH |
663 | CLOBBERS is a vector of the clobbered register parameters. |
664 | LABELS is a vector of destination labels. */ | |
726a989a RB |
665 | |
666 | gimple | |
b8698a0f | 667 | gimple_build_asm_vec (const char *string, VEC(tree,gc)* inputs, |
1c384bf1 RH |
668 | VEC(tree,gc)* outputs, VEC(tree,gc)* clobbers, |
669 | VEC(tree,gc)* labels) | |
726a989a RB |
670 | { |
671 | gimple p; | |
672 | unsigned i; | |
673 | ||
674 | p = gimple_build_asm_1 (string, | |
675 | VEC_length (tree, inputs), | |
b8698a0f | 676 | VEC_length (tree, outputs), |
1c384bf1 RH |
677 | VEC_length (tree, clobbers), |
678 | VEC_length (tree, labels)); | |
b8698a0f | 679 | |
726a989a RB |
680 | for (i = 0; i < VEC_length (tree, inputs); i++) |
681 | gimple_asm_set_input_op (p, i, VEC_index (tree, inputs, i)); | |
682 | ||
683 | for (i = 0; i < VEC_length (tree, outputs); i++) | |
684 | gimple_asm_set_output_op (p, i, VEC_index (tree, outputs, i)); | |
685 | ||
686 | for (i = 0; i < VEC_length (tree, clobbers); i++) | |
687 | gimple_asm_set_clobber_op (p, i, VEC_index (tree, clobbers, i)); | |
b8698a0f | 688 | |
1c384bf1 RH |
689 | for (i = 0; i < VEC_length (tree, labels); i++) |
690 | gimple_asm_set_label_op (p, i, VEC_index (tree, labels, i)); | |
b8698a0f | 691 | |
726a989a RB |
692 | return p; |
693 | } | |
694 | ||
695 | /* Build a GIMPLE_CATCH statement. | |
696 | ||
697 | TYPES are the catch types. | |
698 | HANDLER is the exception handler. */ | |
699 | ||
700 | gimple | |
701 | gimple_build_catch (tree types, gimple_seq handler) | |
702 | { | |
703 | gimple p = gimple_alloc (GIMPLE_CATCH, 0); | |
704 | gimple_catch_set_types (p, types); | |
705 | if (handler) | |
706 | gimple_catch_set_handler (p, handler); | |
707 | ||
708 | return p; | |
709 | } | |
710 | ||
711 | /* Build a GIMPLE_EH_FILTER statement. | |
712 | ||
713 | TYPES are the filter's types. | |
714 | FAILURE is the filter's failure action. */ | |
715 | ||
716 | gimple | |
717 | gimple_build_eh_filter (tree types, gimple_seq failure) | |
718 | { | |
719 | gimple p = gimple_alloc (GIMPLE_EH_FILTER, 0); | |
720 | gimple_eh_filter_set_types (p, types); | |
721 | if (failure) | |
722 | gimple_eh_filter_set_failure (p, failure); | |
723 | ||
724 | return p; | |
725 | } | |
726 | ||
1d65f45c RH |
727 | /* Build a GIMPLE_EH_MUST_NOT_THROW statement. */ |
728 | ||
729 | gimple | |
730 | gimple_build_eh_must_not_throw (tree decl) | |
731 | { | |
786f715d | 732 | gimple p = gimple_alloc (GIMPLE_EH_MUST_NOT_THROW, 0); |
1d65f45c RH |
733 | |
734 | gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); | |
735 | gcc_assert (flags_from_decl_or_type (decl) & ECF_NORETURN); | |
d7f09764 | 736 | gimple_eh_must_not_throw_set_fndecl (p, decl); |
1d65f45c RH |
737 | |
738 | return p; | |
739 | } | |
740 | ||
0a35513e AH |
741 | /* Build a GIMPLE_EH_ELSE statement. */ |
742 | ||
743 | gimple | |
744 | gimple_build_eh_else (gimple_seq n_body, gimple_seq e_body) | |
745 | { | |
746 | gimple p = gimple_alloc (GIMPLE_EH_ELSE, 0); | |
747 | gimple_eh_else_set_n_body (p, n_body); | |
748 | gimple_eh_else_set_e_body (p, e_body); | |
749 | return p; | |
750 | } | |
751 | ||
726a989a RB |
752 | /* Build a GIMPLE_TRY statement. |
753 | ||
754 | EVAL is the expression to evaluate. | |
755 | CLEANUP is the cleanup expression. | |
756 | KIND is either GIMPLE_TRY_CATCH or GIMPLE_TRY_FINALLY depending on | |
757 | whether this is a try/catch or a try/finally respectively. */ | |
758 | ||
759 | gimple | |
760 | gimple_build_try (gimple_seq eval, gimple_seq cleanup, | |
761 | enum gimple_try_flags kind) | |
762 | { | |
763 | gimple p; | |
764 | ||
765 | gcc_assert (kind == GIMPLE_TRY_CATCH || kind == GIMPLE_TRY_FINALLY); | |
766 | p = gimple_alloc (GIMPLE_TRY, 0); | |
767 | gimple_set_subcode (p, kind); | |
768 | if (eval) | |
769 | gimple_try_set_eval (p, eval); | |
770 | if (cleanup) | |
771 | gimple_try_set_cleanup (p, cleanup); | |
772 | ||
773 | return p; | |
774 | } | |
775 | ||
776 | /* Construct a GIMPLE_WITH_CLEANUP_EXPR statement. | |
777 | ||
778 | CLEANUP is the cleanup expression. */ | |
779 | ||
780 | gimple | |
781 | gimple_build_wce (gimple_seq cleanup) | |
782 | { | |
783 | gimple p = gimple_alloc (GIMPLE_WITH_CLEANUP_EXPR, 0); | |
784 | if (cleanup) | |
785 | gimple_wce_set_cleanup (p, cleanup); | |
786 | ||
787 | return p; | |
788 | } | |
789 | ||
790 | ||
1d65f45c | 791 | /* Build a GIMPLE_RESX statement. */ |
726a989a RB |
792 | |
793 | gimple | |
794 | gimple_build_resx (int region) | |
795 | { | |
1d65f45c RH |
796 | gimple p = gimple_build_with_ops (GIMPLE_RESX, ERROR_MARK, 0); |
797 | p->gimple_eh_ctrl.region = region; | |
726a989a RB |
798 | return p; |
799 | } | |
800 | ||
801 | ||
802 | /* The helper for constructing a gimple switch statement. | |
803 | INDEX is the switch's index. | |
804 | NLABELS is the number of labels in the switch excluding the default. | |
805 | DEFAULT_LABEL is the default label for the switch statement. */ | |
806 | ||
b8698a0f | 807 | gimple |
1d65f45c | 808 | gimple_build_switch_nlabels (unsigned nlabels, tree index, tree default_label) |
726a989a RB |
809 | { |
810 | /* nlabels + 1 default label + 1 index. */ | |
bbbbb16a | 811 | gimple p = gimple_build_with_ops (GIMPLE_SWITCH, ERROR_MARK, |
1d65f45c | 812 | 1 + (default_label != NULL) + nlabels); |
726a989a | 813 | gimple_switch_set_index (p, index); |
1d65f45c RH |
814 | if (default_label) |
815 | gimple_switch_set_default_label (p, default_label); | |
726a989a RB |
816 | return p; |
817 | } | |
818 | ||
819 | ||
820 | /* Build a GIMPLE_SWITCH statement. | |
821 | ||
822 | INDEX is the switch's index. | |
b8698a0f | 823 | NLABELS is the number of labels in the switch excluding the DEFAULT_LABEL. |
726a989a RB |
824 | ... are the labels excluding the default. */ |
825 | ||
b8698a0f | 826 | gimple |
726a989a RB |
827 | gimple_build_switch (unsigned nlabels, tree index, tree default_label, ...) |
828 | { | |
829 | va_list al; | |
1d65f45c RH |
830 | unsigned i, offset; |
831 | gimple p = gimple_build_switch_nlabels (nlabels, index, default_label); | |
726a989a RB |
832 | |
833 | /* Store the rest of the labels. */ | |
834 | va_start (al, default_label); | |
1d65f45c RH |
835 | offset = (default_label != NULL); |
836 | for (i = 0; i < nlabels; i++) | |
837 | gimple_switch_set_label (p, i + offset, va_arg (al, tree)); | |
726a989a RB |
838 | va_end (al); |
839 | ||
840 | return p; | |
841 | } | |
842 | ||
843 | ||
844 | /* Build a GIMPLE_SWITCH statement. | |
845 | ||
846 | INDEX is the switch's index. | |
847 | DEFAULT_LABEL is the default label | |
848 | ARGS is a vector of labels excluding the default. */ | |
849 | ||
850 | gimple | |
851 | gimple_build_switch_vec (tree index, tree default_label, VEC(tree, heap) *args) | |
852 | { | |
1d65f45c RH |
853 | unsigned i, offset, nlabels = VEC_length (tree, args); |
854 | gimple p = gimple_build_switch_nlabels (nlabels, index, default_label); | |
726a989a | 855 | |
1d65f45c RH |
856 | /* Copy the labels from the vector to the switch statement. */ |
857 | offset = (default_label != NULL); | |
858 | for (i = 0; i < nlabels; i++) | |
859 | gimple_switch_set_label (p, i + offset, VEC_index (tree, args, i)); | |
726a989a RB |
860 | |
861 | return p; | |
862 | } | |
863 | ||
1d65f45c RH |
864 | /* Build a GIMPLE_EH_DISPATCH statement. */ |
865 | ||
866 | gimple | |
867 | gimple_build_eh_dispatch (int region) | |
868 | { | |
869 | gimple p = gimple_build_with_ops (GIMPLE_EH_DISPATCH, ERROR_MARK, 0); | |
870 | p->gimple_eh_ctrl.region = region; | |
871 | return p; | |
872 | } | |
726a989a | 873 | |
b5b8b0ac AO |
874 | /* Build a new GIMPLE_DEBUG_BIND statement. |
875 | ||
876 | VAR is bound to VALUE; block and location are taken from STMT. */ | |
877 | ||
878 | gimple | |
879 | gimple_build_debug_bind_stat (tree var, tree value, gimple stmt MEM_STAT_DECL) | |
880 | { | |
881 | gimple p = gimple_build_with_ops_stat (GIMPLE_DEBUG, | |
882 | (unsigned)GIMPLE_DEBUG_BIND, 2 | |
883 | PASS_MEM_STAT); | |
884 | ||
885 | gimple_debug_bind_set_var (p, var); | |
886 | gimple_debug_bind_set_value (p, value); | |
887 | if (stmt) | |
888 | { | |
889 | gimple_set_block (p, gimple_block (stmt)); | |
890 | gimple_set_location (p, gimple_location (stmt)); | |
891 | } | |
892 | ||
893 | return p; | |
894 | } | |
895 | ||
896 | ||
ddb555ed JJ |
897 | /* Build a new GIMPLE_DEBUG_SOURCE_BIND statement. |
898 | ||
899 | VAR is bound to VALUE; block and location are taken from STMT. */ | |
900 | ||
901 | gimple | |
902 | gimple_build_debug_source_bind_stat (tree var, tree value, | |
903 | gimple stmt MEM_STAT_DECL) | |
904 | { | |
905 | gimple p = gimple_build_with_ops_stat (GIMPLE_DEBUG, | |
906 | (unsigned)GIMPLE_DEBUG_SOURCE_BIND, 2 | |
907 | PASS_MEM_STAT); | |
908 | ||
909 | gimple_debug_source_bind_set_var (p, var); | |
910 | gimple_debug_source_bind_set_value (p, value); | |
911 | if (stmt) | |
912 | { | |
913 | gimple_set_block (p, gimple_block (stmt)); | |
914 | gimple_set_location (p, gimple_location (stmt)); | |
915 | } | |
916 | ||
917 | return p; | |
918 | } | |
919 | ||
920 | ||
726a989a RB |
921 | /* Build a GIMPLE_OMP_CRITICAL statement. |
922 | ||
923 | BODY is the sequence of statements for which only one thread can execute. | |
924 | NAME is optional identifier for this critical block. */ | |
925 | ||
b8698a0f | 926 | gimple |
726a989a RB |
927 | gimple_build_omp_critical (gimple_seq body, tree name) |
928 | { | |
929 | gimple p = gimple_alloc (GIMPLE_OMP_CRITICAL, 0); | |
930 | gimple_omp_critical_set_name (p, name); | |
931 | if (body) | |
932 | gimple_omp_set_body (p, body); | |
933 | ||
934 | return p; | |
935 | } | |
936 | ||
937 | /* Build a GIMPLE_OMP_FOR statement. | |
938 | ||
939 | BODY is sequence of statements inside the for loop. | |
b8698a0f | 940 | CLAUSES, are any of the OMP loop construct's clauses: private, firstprivate, |
726a989a RB |
941 | lastprivate, reductions, ordered, schedule, and nowait. |
942 | COLLAPSE is the collapse count. | |
943 | PRE_BODY is the sequence of statements that are loop invariant. */ | |
944 | ||
945 | gimple | |
946 | gimple_build_omp_for (gimple_seq body, tree clauses, size_t collapse, | |
947 | gimple_seq pre_body) | |
948 | { | |
949 | gimple p = gimple_alloc (GIMPLE_OMP_FOR, 0); | |
950 | if (body) | |
951 | gimple_omp_set_body (p, body); | |
952 | gimple_omp_for_set_clauses (p, clauses); | |
953 | p->gimple_omp_for.collapse = collapse; | |
a9429e29 LB |
954 | p->gimple_omp_for.iter |
955 | = ggc_alloc_cleared_vec_gimple_omp_for_iter (collapse); | |
726a989a RB |
956 | if (pre_body) |
957 | gimple_omp_for_set_pre_body (p, pre_body); | |
958 | ||
959 | return p; | |
960 | } | |
961 | ||
962 | ||
963 | /* Build a GIMPLE_OMP_PARALLEL statement. | |
964 | ||
965 | BODY is sequence of statements which are executed in parallel. | |
966 | CLAUSES, are the OMP parallel construct's clauses. | |
967 | CHILD_FN is the function created for the parallel threads to execute. | |
968 | DATA_ARG are the shared data argument(s). */ | |
969 | ||
b8698a0f L |
970 | gimple |
971 | gimple_build_omp_parallel (gimple_seq body, tree clauses, tree child_fn, | |
726a989a RB |
972 | tree data_arg) |
973 | { | |
974 | gimple p = gimple_alloc (GIMPLE_OMP_PARALLEL, 0); | |
975 | if (body) | |
976 | gimple_omp_set_body (p, body); | |
977 | gimple_omp_parallel_set_clauses (p, clauses); | |
978 | gimple_omp_parallel_set_child_fn (p, child_fn); | |
979 | gimple_omp_parallel_set_data_arg (p, data_arg); | |
980 | ||
981 | return p; | |
982 | } | |
983 | ||
984 | ||
985 | /* Build a GIMPLE_OMP_TASK statement. | |
986 | ||
987 | BODY is sequence of statements which are executed by the explicit task. | |
988 | CLAUSES, are the OMP parallel construct's clauses. | |
989 | CHILD_FN is the function created for the parallel threads to execute. | |
990 | DATA_ARG are the shared data argument(s). | |
991 | COPY_FN is the optional function for firstprivate initialization. | |
992 | ARG_SIZE and ARG_ALIGN are size and alignment of the data block. */ | |
993 | ||
b8698a0f | 994 | gimple |
726a989a RB |
995 | gimple_build_omp_task (gimple_seq body, tree clauses, tree child_fn, |
996 | tree data_arg, tree copy_fn, tree arg_size, | |
997 | tree arg_align) | |
998 | { | |
999 | gimple p = gimple_alloc (GIMPLE_OMP_TASK, 0); | |
1000 | if (body) | |
1001 | gimple_omp_set_body (p, body); | |
1002 | gimple_omp_task_set_clauses (p, clauses); | |
1003 | gimple_omp_task_set_child_fn (p, child_fn); | |
1004 | gimple_omp_task_set_data_arg (p, data_arg); | |
1005 | gimple_omp_task_set_copy_fn (p, copy_fn); | |
1006 | gimple_omp_task_set_arg_size (p, arg_size); | |
1007 | gimple_omp_task_set_arg_align (p, arg_align); | |
1008 | ||
1009 | return p; | |
1010 | } | |
1011 | ||
1012 | ||
1013 | /* Build a GIMPLE_OMP_SECTION statement for a sections statement. | |
1014 | ||
1015 | BODY is the sequence of statements in the section. */ | |
1016 | ||
1017 | gimple | |
1018 | gimple_build_omp_section (gimple_seq body) | |
1019 | { | |
1020 | gimple p = gimple_alloc (GIMPLE_OMP_SECTION, 0); | |
1021 | if (body) | |
1022 | gimple_omp_set_body (p, body); | |
1023 | ||
1024 | return p; | |
1025 | } | |
1026 | ||
1027 | ||
1028 | /* Build a GIMPLE_OMP_MASTER statement. | |
1029 | ||
1030 | BODY is the sequence of statements to be executed by just the master. */ | |
1031 | ||
b8698a0f | 1032 | gimple |
726a989a RB |
1033 | gimple_build_omp_master (gimple_seq body) |
1034 | { | |
1035 | gimple p = gimple_alloc (GIMPLE_OMP_MASTER, 0); | |
1036 | if (body) | |
1037 | gimple_omp_set_body (p, body); | |
1038 | ||
1039 | return p; | |
1040 | } | |
1041 | ||
1042 | ||
1043 | /* Build a GIMPLE_OMP_CONTINUE statement. | |
1044 | ||
1045 | CONTROL_DEF is the definition of the control variable. | |
1046 | CONTROL_USE is the use of the control variable. */ | |
1047 | ||
b8698a0f | 1048 | gimple |
726a989a RB |
1049 | gimple_build_omp_continue (tree control_def, tree control_use) |
1050 | { | |
1051 | gimple p = gimple_alloc (GIMPLE_OMP_CONTINUE, 0); | |
1052 | gimple_omp_continue_set_control_def (p, control_def); | |
1053 | gimple_omp_continue_set_control_use (p, control_use); | |
1054 | return p; | |
1055 | } | |
1056 | ||
1057 | /* Build a GIMPLE_OMP_ORDERED statement. | |
1058 | ||
1059 | BODY is the sequence of statements inside a loop that will executed in | |
1060 | sequence. */ | |
1061 | ||
b8698a0f | 1062 | gimple |
726a989a RB |
1063 | gimple_build_omp_ordered (gimple_seq body) |
1064 | { | |
1065 | gimple p = gimple_alloc (GIMPLE_OMP_ORDERED, 0); | |
1066 | if (body) | |
1067 | gimple_omp_set_body (p, body); | |
1068 | ||
1069 | return p; | |
1070 | } | |
1071 | ||
1072 | ||
1073 | /* Build a GIMPLE_OMP_RETURN statement. | |
1074 | WAIT_P is true if this is a non-waiting return. */ | |
1075 | ||
b8698a0f | 1076 | gimple |
726a989a RB |
1077 | gimple_build_omp_return (bool wait_p) |
1078 | { | |
1079 | gimple p = gimple_alloc (GIMPLE_OMP_RETURN, 0); | |
1080 | if (wait_p) | |
1081 | gimple_omp_return_set_nowait (p); | |
1082 | ||
1083 | return p; | |
1084 | } | |
1085 | ||
1086 | ||
1087 | /* Build a GIMPLE_OMP_SECTIONS statement. | |
1088 | ||
1089 | BODY is a sequence of section statements. | |
1090 | CLAUSES are any of the OMP sections contsruct's clauses: private, | |
1091 | firstprivate, lastprivate, reduction, and nowait. */ | |
1092 | ||
b8698a0f | 1093 | gimple |
726a989a RB |
1094 | gimple_build_omp_sections (gimple_seq body, tree clauses) |
1095 | { | |
1096 | gimple p = gimple_alloc (GIMPLE_OMP_SECTIONS, 0); | |
1097 | if (body) | |
1098 | gimple_omp_set_body (p, body); | |
1099 | gimple_omp_sections_set_clauses (p, clauses); | |
1100 | ||
1101 | return p; | |
1102 | } | |
1103 | ||
1104 | ||
1105 | /* Build a GIMPLE_OMP_SECTIONS_SWITCH. */ | |
1106 | ||
1107 | gimple | |
1108 | gimple_build_omp_sections_switch (void) | |
1109 | { | |
1110 | return gimple_alloc (GIMPLE_OMP_SECTIONS_SWITCH, 0); | |
1111 | } | |
1112 | ||
1113 | ||
1114 | /* Build a GIMPLE_OMP_SINGLE statement. | |
1115 | ||
1116 | BODY is the sequence of statements that will be executed once. | |
1117 | CLAUSES are any of the OMP single construct's clauses: private, firstprivate, | |
1118 | copyprivate, nowait. */ | |
1119 | ||
b8698a0f | 1120 | gimple |
726a989a RB |
1121 | gimple_build_omp_single (gimple_seq body, tree clauses) |
1122 | { | |
1123 | gimple p = gimple_alloc (GIMPLE_OMP_SINGLE, 0); | |
1124 | if (body) | |
1125 | gimple_omp_set_body (p, body); | |
1126 | gimple_omp_single_set_clauses (p, clauses); | |
1127 | ||
1128 | return p; | |
1129 | } | |
1130 | ||
1131 | ||
726a989a RB |
1132 | /* Build a GIMPLE_OMP_ATOMIC_LOAD statement. */ |
1133 | ||
1134 | gimple | |
1135 | gimple_build_omp_atomic_load (tree lhs, tree rhs) | |
1136 | { | |
1137 | gimple p = gimple_alloc (GIMPLE_OMP_ATOMIC_LOAD, 0); | |
1138 | gimple_omp_atomic_load_set_lhs (p, lhs); | |
1139 | gimple_omp_atomic_load_set_rhs (p, rhs); | |
1140 | return p; | |
1141 | } | |
1142 | ||
1143 | /* Build a GIMPLE_OMP_ATOMIC_STORE statement. | |
1144 | ||
1145 | VAL is the value we are storing. */ | |
1146 | ||
1147 | gimple | |
1148 | gimple_build_omp_atomic_store (tree val) | |
1149 | { | |
1150 | gimple p = gimple_alloc (GIMPLE_OMP_ATOMIC_STORE, 0); | |
1151 | gimple_omp_atomic_store_set_val (p, val); | |
1152 | return p; | |
1153 | } | |
1154 | ||
0a35513e AH |
1155 | /* Build a GIMPLE_TRANSACTION statement. */ |
1156 | ||
1157 | gimple | |
1158 | gimple_build_transaction (gimple_seq body, tree label) | |
1159 | { | |
1160 | gimple p = gimple_alloc (GIMPLE_TRANSACTION, 0); | |
1161 | gimple_transaction_set_body (p, body); | |
1162 | gimple_transaction_set_label (p, label); | |
1163 | return p; | |
1164 | } | |
1165 | ||
726a989a RB |
1166 | /* Build a GIMPLE_PREDICT statement. PREDICT is one of the predictors from |
1167 | predict.def, OUTCOME is NOT_TAKEN or TAKEN. */ | |
1168 | ||
1169 | gimple | |
1170 | gimple_build_predict (enum br_predictor predictor, enum prediction outcome) | |
1171 | { | |
1172 | gimple p = gimple_alloc (GIMPLE_PREDICT, 0); | |
1173 | /* Ensure all the predictors fit into the lower bits of the subcode. */ | |
e0c68ce9 | 1174 | gcc_assert ((int) END_PREDICTORS <= GF_PREDICT_TAKEN); |
726a989a RB |
1175 | gimple_predict_set_predictor (p, predictor); |
1176 | gimple_predict_set_outcome (p, outcome); | |
1177 | return p; | |
1178 | } | |
1179 | ||
cea094ed | 1180 | #if defined ENABLE_GIMPLE_CHECKING |
726a989a RB |
1181 | /* Complain of a gimple type mismatch and die. */ |
1182 | ||
1183 | void | |
1184 | gimple_check_failed (const_gimple gs, const char *file, int line, | |
1185 | const char *function, enum gimple_code code, | |
1186 | enum tree_code subcode) | |
1187 | { | |
1188 | internal_error ("gimple check: expected %s(%s), have %s(%s) in %s, at %s:%d", | |
1189 | gimple_code_name[code], | |
1190 | tree_code_name[subcode], | |
1191 | gimple_code_name[gimple_code (gs)], | |
1192 | gs->gsbase.subcode > 0 | |
1193 | ? tree_code_name[gs->gsbase.subcode] | |
1194 | : "", | |
1195 | function, trim_filename (file), line); | |
1196 | } | |
726a989a RB |
1197 | #endif /* ENABLE_GIMPLE_CHECKING */ |
1198 | ||
1199 | ||
726a989a RB |
1200 | /* Link gimple statement GS to the end of the sequence *SEQ_P. If |
1201 | *SEQ_P is NULL, a new sequence is allocated. */ | |
1202 | ||
1203 | void | |
1204 | gimple_seq_add_stmt (gimple_seq *seq_p, gimple gs) | |
1205 | { | |
1206 | gimple_stmt_iterator si; | |
726a989a RB |
1207 | if (gs == NULL) |
1208 | return; | |
1209 | ||
726a989a RB |
1210 | si = gsi_last (*seq_p); |
1211 | gsi_insert_after (&si, gs, GSI_NEW_STMT); | |
1212 | } | |
1213 | ||
1214 | ||
1215 | /* Append sequence SRC to the end of sequence *DST_P. If *DST_P is | |
1216 | NULL, a new sequence is allocated. */ | |
1217 | ||
1218 | void | |
1219 | gimple_seq_add_seq (gimple_seq *dst_p, gimple_seq src) | |
1220 | { | |
1221 | gimple_stmt_iterator si; | |
726a989a RB |
1222 | if (src == NULL) |
1223 | return; | |
1224 | ||
726a989a RB |
1225 | si = gsi_last (*dst_p); |
1226 | gsi_insert_seq_after (&si, src, GSI_NEW_STMT); | |
1227 | } | |
1228 | ||
1229 | ||
1230 | /* Helper function of empty_body_p. Return true if STMT is an empty | |
1231 | statement. */ | |
1232 | ||
1233 | static bool | |
1234 | empty_stmt_p (gimple stmt) | |
1235 | { | |
1236 | if (gimple_code (stmt) == GIMPLE_NOP) | |
1237 | return true; | |
1238 | if (gimple_code (stmt) == GIMPLE_BIND) | |
1239 | return empty_body_p (gimple_bind_body (stmt)); | |
1240 | return false; | |
1241 | } | |
1242 | ||
1243 | ||
1244 | /* Return true if BODY contains nothing but empty statements. */ | |
1245 | ||
1246 | bool | |
1247 | empty_body_p (gimple_seq body) | |
1248 | { | |
1249 | gimple_stmt_iterator i; | |
1250 | ||
726a989a RB |
1251 | if (gimple_seq_empty_p (body)) |
1252 | return true; | |
1253 | for (i = gsi_start (body); !gsi_end_p (i); gsi_next (&i)) | |
b5b8b0ac AO |
1254 | if (!empty_stmt_p (gsi_stmt (i)) |
1255 | && !is_gimple_debug (gsi_stmt (i))) | |
726a989a RB |
1256 | return false; |
1257 | ||
1258 | return true; | |
1259 | } | |
1260 | ||
1261 | ||
1262 | /* Perform a deep copy of sequence SRC and return the result. */ | |
1263 | ||
1264 | gimple_seq | |
1265 | gimple_seq_copy (gimple_seq src) | |
1266 | { | |
1267 | gimple_stmt_iterator gsi; | |
355a7673 | 1268 | gimple_seq new_seq = NULL; |
726a989a RB |
1269 | gimple stmt; |
1270 | ||
1271 | for (gsi = gsi_start (src); !gsi_end_p (gsi); gsi_next (&gsi)) | |
1272 | { | |
1273 | stmt = gimple_copy (gsi_stmt (gsi)); | |
82d6e6fc | 1274 | gimple_seq_add_stmt (&new_seq, stmt); |
726a989a RB |
1275 | } |
1276 | ||
82d6e6fc | 1277 | return new_seq; |
726a989a RB |
1278 | } |
1279 | ||
1280 | ||
355a7673 | 1281 | /* Walk all the statements in the sequence *PSEQ calling walk_gimple_stmt |
726a989a | 1282 | on each one. WI is as in walk_gimple_stmt. |
b8698a0f | 1283 | |
0a35513e AH |
1284 | If walk_gimple_stmt returns non-NULL, the walk is stopped, and the |
1285 | value is stored in WI->CALLBACK_RESULT. Also, the statement that | |
1286 | produced the value is returned if this statement has not been | |
1287 | removed by a callback (wi->removed_stmt). If the statement has | |
1288 | been removed, NULL is returned. | |
726a989a RB |
1289 | |
1290 | Otherwise, all the statements are walked and NULL returned. */ | |
1291 | ||
1292 | gimple | |
355a7673 MM |
1293 | walk_gimple_seq_mod (gimple_seq *pseq, walk_stmt_fn callback_stmt, |
1294 | walk_tree_fn callback_op, struct walk_stmt_info *wi) | |
726a989a RB |
1295 | { |
1296 | gimple_stmt_iterator gsi; | |
1297 | ||
355a7673 | 1298 | for (gsi = gsi_start (*pseq); !gsi_end_p (gsi); ) |
726a989a RB |
1299 | { |
1300 | tree ret = walk_gimple_stmt (&gsi, callback_stmt, callback_op, wi); | |
1301 | if (ret) | |
1302 | { | |
1303 | /* If CALLBACK_STMT or CALLBACK_OP return a value, WI must exist | |
1304 | to hold it. */ | |
1305 | gcc_assert (wi); | |
1306 | wi->callback_result = ret; | |
0a35513e AH |
1307 | |
1308 | return wi->removed_stmt ? NULL : gsi_stmt (gsi); | |
726a989a | 1309 | } |
0a35513e AH |
1310 | |
1311 | if (!wi->removed_stmt) | |
1312 | gsi_next (&gsi); | |
726a989a RB |
1313 | } |
1314 | ||
1315 | if (wi) | |
1316 | wi->callback_result = NULL_TREE; | |
1317 | ||
1318 | return NULL; | |
1319 | } | |
1320 | ||
1321 | ||
355a7673 MM |
1322 | /* Like walk_gimple_seq_mod, but ensure that the head of SEQ isn't |
1323 | changed by the callbacks. */ | |
1324 | ||
1325 | gimple | |
1326 | walk_gimple_seq (gimple_seq seq, walk_stmt_fn callback_stmt, | |
1327 | walk_tree_fn callback_op, struct walk_stmt_info *wi) | |
1328 | { | |
1329 | gimple_seq seq2 = seq; | |
1330 | gimple ret = walk_gimple_seq_mod (&seq2, callback_stmt, callback_op, wi); | |
1331 | gcc_assert (seq2 == seq); | |
1332 | return ret; | |
1333 | } | |
1334 | ||
1335 | ||
726a989a RB |
1336 | /* Helper function for walk_gimple_stmt. Walk operands of a GIMPLE_ASM. */ |
1337 | ||
1338 | static tree | |
1339 | walk_gimple_asm (gimple stmt, walk_tree_fn callback_op, | |
1340 | struct walk_stmt_info *wi) | |
1341 | { | |
1c384bf1 | 1342 | tree ret, op; |
726a989a RB |
1343 | unsigned noutputs; |
1344 | const char **oconstraints; | |
1c384bf1 | 1345 | unsigned i, n; |
726a989a RB |
1346 | const char *constraint; |
1347 | bool allows_mem, allows_reg, is_inout; | |
1348 | ||
1349 | noutputs = gimple_asm_noutputs (stmt); | |
1350 | oconstraints = (const char **) alloca ((noutputs) * sizeof (const char *)); | |
1351 | ||
1352 | if (wi) | |
1353 | wi->is_lhs = true; | |
1354 | ||
1355 | for (i = 0; i < noutputs; i++) | |
1356 | { | |
1c384bf1 | 1357 | op = gimple_asm_output_op (stmt, i); |
726a989a RB |
1358 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (op))); |
1359 | oconstraints[i] = constraint; | |
1360 | parse_output_constraint (&constraint, i, 0, 0, &allows_mem, &allows_reg, | |
1361 | &is_inout); | |
1362 | if (wi) | |
1363 | wi->val_only = (allows_reg || !allows_mem); | |
1364 | ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL); | |
1365 | if (ret) | |
1366 | return ret; | |
1367 | } | |
1368 | ||
1c384bf1 RH |
1369 | n = gimple_asm_ninputs (stmt); |
1370 | for (i = 0; i < n; i++) | |
726a989a | 1371 | { |
1c384bf1 | 1372 | op = gimple_asm_input_op (stmt, i); |
726a989a RB |
1373 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (op))); |
1374 | parse_input_constraint (&constraint, 0, 0, noutputs, 0, | |
1375 | oconstraints, &allows_mem, &allows_reg); | |
1376 | if (wi) | |
1c384bf1 RH |
1377 | { |
1378 | wi->val_only = (allows_reg || !allows_mem); | |
1379 | /* Although input "m" is not really a LHS, we need a lvalue. */ | |
1380 | wi->is_lhs = !wi->val_only; | |
1381 | } | |
726a989a RB |
1382 | ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL); |
1383 | if (ret) | |
1384 | return ret; | |
1385 | } | |
1386 | ||
1387 | if (wi) | |
1388 | { | |
1389 | wi->is_lhs = false; | |
1390 | wi->val_only = true; | |
1391 | } | |
1392 | ||
1c384bf1 RH |
1393 | n = gimple_asm_nlabels (stmt); |
1394 | for (i = 0; i < n; i++) | |
1395 | { | |
1396 | op = gimple_asm_label_op (stmt, i); | |
1397 | ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL); | |
1398 | if (ret) | |
1399 | return ret; | |
1400 | } | |
1401 | ||
726a989a RB |
1402 | return NULL_TREE; |
1403 | } | |
1404 | ||
1405 | ||
1406 | /* Helper function of WALK_GIMPLE_STMT. Walk every tree operand in | |
1407 | STMT. CALLBACK_OP and WI are as in WALK_GIMPLE_STMT. | |
1408 | ||
1409 | CALLBACK_OP is called on each operand of STMT via walk_tree. | |
1410 | Additional parameters to walk_tree must be stored in WI. For each operand | |
1411 | OP, walk_tree is called as: | |
1412 | ||
1413 | walk_tree (&OP, CALLBACK_OP, WI, WI->PSET) | |
1414 | ||
1415 | If CALLBACK_OP returns non-NULL for an operand, the remaining | |
1416 | operands are not scanned. | |
1417 | ||
1418 | The return value is that returned by the last call to walk_tree, or | |
1419 | NULL_TREE if no CALLBACK_OP is specified. */ | |
1420 | ||
6a4d4e8a | 1421 | tree |
726a989a RB |
1422 | walk_gimple_op (gimple stmt, walk_tree_fn callback_op, |
1423 | struct walk_stmt_info *wi) | |
1424 | { | |
1425 | struct pointer_set_t *pset = (wi) ? wi->pset : NULL; | |
1426 | unsigned i; | |
1427 | tree ret = NULL_TREE; | |
1428 | ||
1429 | switch (gimple_code (stmt)) | |
1430 | { | |
1431 | case GIMPLE_ASSIGN: | |
cb3d597d EB |
1432 | /* Walk the RHS operands. If the LHS is of a non-renamable type or |
1433 | is a register variable, we may use a COMPONENT_REF on the RHS. */ | |
726a989a | 1434 | if (wi) |
cb3d597d EB |
1435 | { |
1436 | tree lhs = gimple_assign_lhs (stmt); | |
1437 | wi->val_only | |
1438 | = (is_gimple_reg_type (TREE_TYPE (lhs)) && !is_gimple_reg (lhs)) | |
b9af73fc | 1439 | || gimple_assign_rhs_class (stmt) != GIMPLE_SINGLE_RHS; |
cb3d597d | 1440 | } |
726a989a RB |
1441 | |
1442 | for (i = 1; i < gimple_num_ops (stmt); i++) | |
1443 | { | |
1444 | ret = walk_tree (gimple_op_ptr (stmt, i), callback_op, wi, | |
1445 | pset); | |
1446 | if (ret) | |
1447 | return ret; | |
1448 | } | |
1449 | ||
1450 | /* Walk the LHS. If the RHS is appropriate for a memory, we | |
1451 | may use a COMPONENT_REF on the LHS. */ | |
1452 | if (wi) | |
1453 | { | |
216820a4 RG |
1454 | /* If the RHS is of a non-renamable type or is a register variable, |
1455 | we may use a COMPONENT_REF on the LHS. */ | |
b9af73fc | 1456 | tree rhs1 = gimple_assign_rhs1 (stmt); |
216820a4 RG |
1457 | wi->val_only |
1458 | = (is_gimple_reg_type (TREE_TYPE (rhs1)) && !is_gimple_reg (rhs1)) | |
1459 | || gimple_assign_rhs_class (stmt) != GIMPLE_SINGLE_RHS; | |
726a989a RB |
1460 | wi->is_lhs = true; |
1461 | } | |
1462 | ||
1463 | ret = walk_tree (gimple_op_ptr (stmt, 0), callback_op, wi, pset); | |
1464 | if (ret) | |
1465 | return ret; | |
1466 | ||
1467 | if (wi) | |
1468 | { | |
1469 | wi->val_only = true; | |
1470 | wi->is_lhs = false; | |
1471 | } | |
1472 | break; | |
1473 | ||
1474 | case GIMPLE_CALL: | |
1475 | if (wi) | |
523968bf RG |
1476 | { |
1477 | wi->is_lhs = false; | |
1478 | wi->val_only = true; | |
1479 | } | |
726a989a RB |
1480 | |
1481 | ret = walk_tree (gimple_call_chain_ptr (stmt), callback_op, wi, pset); | |
1482 | if (ret) | |
1483 | return ret; | |
1484 | ||
1485 | ret = walk_tree (gimple_call_fn_ptr (stmt), callback_op, wi, pset); | |
1486 | if (ret) | |
1487 | return ret; | |
1488 | ||
1489 | for (i = 0; i < gimple_call_num_args (stmt); i++) | |
1490 | { | |
523968bf | 1491 | if (wi) |
4d931f41 EB |
1492 | wi->val_only |
1493 | = is_gimple_reg_type (TREE_TYPE (gimple_call_arg (stmt, i))); | |
726a989a RB |
1494 | ret = walk_tree (gimple_call_arg_ptr (stmt, i), callback_op, wi, |
1495 | pset); | |
1496 | if (ret) | |
1497 | return ret; | |
1498 | } | |
1499 | ||
523968bf RG |
1500 | if (gimple_call_lhs (stmt)) |
1501 | { | |
1502 | if (wi) | |
1503 | { | |
1504 | wi->is_lhs = true; | |
4d931f41 EB |
1505 | wi->val_only |
1506 | = is_gimple_reg_type (TREE_TYPE (gimple_call_lhs (stmt))); | |
523968bf | 1507 | } |
726a989a | 1508 | |
523968bf RG |
1509 | ret = walk_tree (gimple_call_lhs_ptr (stmt), callback_op, wi, pset); |
1510 | if (ret) | |
1511 | return ret; | |
1512 | } | |
726a989a RB |
1513 | |
1514 | if (wi) | |
523968bf RG |
1515 | { |
1516 | wi->is_lhs = false; | |
1517 | wi->val_only = true; | |
1518 | } | |
726a989a RB |
1519 | break; |
1520 | ||
1521 | case GIMPLE_CATCH: | |
1522 | ret = walk_tree (gimple_catch_types_ptr (stmt), callback_op, wi, | |
1523 | pset); | |
1524 | if (ret) | |
1525 | return ret; | |
1526 | break; | |
1527 | ||
1528 | case GIMPLE_EH_FILTER: | |
1529 | ret = walk_tree (gimple_eh_filter_types_ptr (stmt), callback_op, wi, | |
1530 | pset); | |
1531 | if (ret) | |
1532 | return ret; | |
1533 | break; | |
1534 | ||
726a989a RB |
1535 | case GIMPLE_ASM: |
1536 | ret = walk_gimple_asm (stmt, callback_op, wi); | |
1537 | if (ret) | |
1538 | return ret; | |
1539 | break; | |
1540 | ||
1541 | case GIMPLE_OMP_CONTINUE: | |
1542 | ret = walk_tree (gimple_omp_continue_control_def_ptr (stmt), | |
1543 | callback_op, wi, pset); | |
1544 | if (ret) | |
1545 | return ret; | |
1546 | ||
1547 | ret = walk_tree (gimple_omp_continue_control_use_ptr (stmt), | |
1548 | callback_op, wi, pset); | |
1549 | if (ret) | |
1550 | return ret; | |
1551 | break; | |
1552 | ||
1553 | case GIMPLE_OMP_CRITICAL: | |
1554 | ret = walk_tree (gimple_omp_critical_name_ptr (stmt), callback_op, wi, | |
1555 | pset); | |
1556 | if (ret) | |
1557 | return ret; | |
1558 | break; | |
1559 | ||
1560 | case GIMPLE_OMP_FOR: | |
1561 | ret = walk_tree (gimple_omp_for_clauses_ptr (stmt), callback_op, wi, | |
1562 | pset); | |
1563 | if (ret) | |
1564 | return ret; | |
1565 | for (i = 0; i < gimple_omp_for_collapse (stmt); i++) | |
1566 | { | |
1567 | ret = walk_tree (gimple_omp_for_index_ptr (stmt, i), callback_op, | |
1568 | wi, pset); | |
1569 | if (ret) | |
1570 | return ret; | |
1571 | ret = walk_tree (gimple_omp_for_initial_ptr (stmt, i), callback_op, | |
1572 | wi, pset); | |
1573 | if (ret) | |
1574 | return ret; | |
1575 | ret = walk_tree (gimple_omp_for_final_ptr (stmt, i), callback_op, | |
1576 | wi, pset); | |
1577 | if (ret) | |
1578 | return ret; | |
1579 | ret = walk_tree (gimple_omp_for_incr_ptr (stmt, i), callback_op, | |
1580 | wi, pset); | |
1581 | } | |
1582 | if (ret) | |
1583 | return ret; | |
1584 | break; | |
1585 | ||
1586 | case GIMPLE_OMP_PARALLEL: | |
1587 | ret = walk_tree (gimple_omp_parallel_clauses_ptr (stmt), callback_op, | |
1588 | wi, pset); | |
1589 | if (ret) | |
1590 | return ret; | |
1591 | ret = walk_tree (gimple_omp_parallel_child_fn_ptr (stmt), callback_op, | |
1592 | wi, pset); | |
1593 | if (ret) | |
1594 | return ret; | |
1595 | ret = walk_tree (gimple_omp_parallel_data_arg_ptr (stmt), callback_op, | |
1596 | wi, pset); | |
1597 | if (ret) | |
1598 | return ret; | |
1599 | break; | |
1600 | ||
1601 | case GIMPLE_OMP_TASK: | |
1602 | ret = walk_tree (gimple_omp_task_clauses_ptr (stmt), callback_op, | |
1603 | wi, pset); | |
1604 | if (ret) | |
1605 | return ret; | |
1606 | ret = walk_tree (gimple_omp_task_child_fn_ptr (stmt), callback_op, | |
1607 | wi, pset); | |
1608 | if (ret) | |
1609 | return ret; | |
1610 | ret = walk_tree (gimple_omp_task_data_arg_ptr (stmt), callback_op, | |
1611 | wi, pset); | |
1612 | if (ret) | |
1613 | return ret; | |
1614 | ret = walk_tree (gimple_omp_task_copy_fn_ptr (stmt), callback_op, | |
1615 | wi, pset); | |
1616 | if (ret) | |
1617 | return ret; | |
1618 | ret = walk_tree (gimple_omp_task_arg_size_ptr (stmt), callback_op, | |
1619 | wi, pset); | |
1620 | if (ret) | |
1621 | return ret; | |
1622 | ret = walk_tree (gimple_omp_task_arg_align_ptr (stmt), callback_op, | |
1623 | wi, pset); | |
1624 | if (ret) | |
1625 | return ret; | |
1626 | break; | |
1627 | ||
1628 | case GIMPLE_OMP_SECTIONS: | |
1629 | ret = walk_tree (gimple_omp_sections_clauses_ptr (stmt), callback_op, | |
1630 | wi, pset); | |
1631 | if (ret) | |
1632 | return ret; | |
1633 | ||
1634 | ret = walk_tree (gimple_omp_sections_control_ptr (stmt), callback_op, | |
1635 | wi, pset); | |
1636 | if (ret) | |
1637 | return ret; | |
1638 | ||
1639 | break; | |
1640 | ||
1641 | case GIMPLE_OMP_SINGLE: | |
1642 | ret = walk_tree (gimple_omp_single_clauses_ptr (stmt), callback_op, wi, | |
1643 | pset); | |
1644 | if (ret) | |
1645 | return ret; | |
1646 | break; | |
1647 | ||
1648 | case GIMPLE_OMP_ATOMIC_LOAD: | |
1649 | ret = walk_tree (gimple_omp_atomic_load_lhs_ptr (stmt), callback_op, wi, | |
1650 | pset); | |
1651 | if (ret) | |
1652 | return ret; | |
1653 | ||
1654 | ret = walk_tree (gimple_omp_atomic_load_rhs_ptr (stmt), callback_op, wi, | |
1655 | pset); | |
1656 | if (ret) | |
1657 | return ret; | |
1658 | break; | |
1659 | ||
1660 | case GIMPLE_OMP_ATOMIC_STORE: | |
1661 | ret = walk_tree (gimple_omp_atomic_store_val_ptr (stmt), callback_op, | |
1662 | wi, pset); | |
1663 | if (ret) | |
1664 | return ret; | |
1665 | break; | |
1666 | ||
0a35513e AH |
1667 | case GIMPLE_TRANSACTION: |
1668 | ret = walk_tree (gimple_transaction_label_ptr (stmt), callback_op, | |
1669 | wi, pset); | |
1670 | if (ret) | |
1671 | return ret; | |
1672 | break; | |
1673 | ||
726a989a RB |
1674 | /* Tuples that do not have operands. */ |
1675 | case GIMPLE_NOP: | |
1676 | case GIMPLE_RESX: | |
1677 | case GIMPLE_OMP_RETURN: | |
1678 | case GIMPLE_PREDICT: | |
1679 | break; | |
1680 | ||
1681 | default: | |
1682 | { | |
1683 | enum gimple_statement_structure_enum gss; | |
1684 | gss = gimple_statement_structure (stmt); | |
1685 | if (gss == GSS_WITH_OPS || gss == GSS_WITH_MEM_OPS) | |
1686 | for (i = 0; i < gimple_num_ops (stmt); i++) | |
1687 | { | |
1688 | ret = walk_tree (gimple_op_ptr (stmt, i), callback_op, wi, pset); | |
1689 | if (ret) | |
1690 | return ret; | |
1691 | } | |
1692 | } | |
1693 | break; | |
1694 | } | |
1695 | ||
1696 | return NULL_TREE; | |
1697 | } | |
1698 | ||
1699 | ||
1700 | /* Walk the current statement in GSI (optionally using traversal state | |
1701 | stored in WI). If WI is NULL, no state is kept during traversal. | |
1702 | The callback CALLBACK_STMT is called. If CALLBACK_STMT indicates | |
1703 | that it has handled all the operands of the statement, its return | |
1704 | value is returned. Otherwise, the return value from CALLBACK_STMT | |
1705 | is discarded and its operands are scanned. | |
1706 | ||
1707 | If CALLBACK_STMT is NULL or it didn't handle the operands, | |
1708 | CALLBACK_OP is called on each operand of the statement via | |
1709 | walk_gimple_op. If walk_gimple_op returns non-NULL for any | |
1710 | operand, the remaining operands are not scanned. In this case, the | |
1711 | return value from CALLBACK_OP is returned. | |
1712 | ||
1713 | In any other case, NULL_TREE is returned. */ | |
1714 | ||
1715 | tree | |
1716 | walk_gimple_stmt (gimple_stmt_iterator *gsi, walk_stmt_fn callback_stmt, | |
1717 | walk_tree_fn callback_op, struct walk_stmt_info *wi) | |
1718 | { | |
1719 | gimple ret; | |
1720 | tree tree_ret; | |
1721 | gimple stmt = gsi_stmt (*gsi); | |
1722 | ||
1723 | if (wi) | |
0a35513e AH |
1724 | { |
1725 | wi->gsi = *gsi; | |
1726 | wi->removed_stmt = false; | |
726a989a | 1727 | |
0a35513e AH |
1728 | if (wi->want_locations && gimple_has_location (stmt)) |
1729 | input_location = gimple_location (stmt); | |
1730 | } | |
726a989a RB |
1731 | |
1732 | ret = NULL; | |
1733 | ||
1734 | /* Invoke the statement callback. Return if the callback handled | |
1735 | all of STMT operands by itself. */ | |
1736 | if (callback_stmt) | |
1737 | { | |
1738 | bool handled_ops = false; | |
1739 | tree_ret = callback_stmt (gsi, &handled_ops, wi); | |
1740 | if (handled_ops) | |
1741 | return tree_ret; | |
1742 | ||
1743 | /* If CALLBACK_STMT did not handle operands, it should not have | |
1744 | a value to return. */ | |
1745 | gcc_assert (tree_ret == NULL); | |
1746 | ||
0a35513e AH |
1747 | if (wi && wi->removed_stmt) |
1748 | return NULL; | |
1749 | ||
726a989a RB |
1750 | /* Re-read stmt in case the callback changed it. */ |
1751 | stmt = gsi_stmt (*gsi); | |
1752 | } | |
1753 | ||
1754 | /* If CALLBACK_OP is defined, invoke it on every operand of STMT. */ | |
1755 | if (callback_op) | |
1756 | { | |
1757 | tree_ret = walk_gimple_op (stmt, callback_op, wi); | |
1758 | if (tree_ret) | |
1759 | return tree_ret; | |
1760 | } | |
1761 | ||
1762 | /* If STMT can have statements inside (e.g. GIMPLE_BIND), walk them. */ | |
1763 | switch (gimple_code (stmt)) | |
1764 | { | |
1765 | case GIMPLE_BIND: | |
355a7673 MM |
1766 | ret = walk_gimple_seq_mod (gimple_bind_body_ptr (stmt), callback_stmt, |
1767 | callback_op, wi); | |
726a989a RB |
1768 | if (ret) |
1769 | return wi->callback_result; | |
1770 | break; | |
1771 | ||
1772 | case GIMPLE_CATCH: | |
355a7673 MM |
1773 | ret = walk_gimple_seq_mod (gimple_catch_handler_ptr (stmt), callback_stmt, |
1774 | callback_op, wi); | |
726a989a RB |
1775 | if (ret) |
1776 | return wi->callback_result; | |
1777 | break; | |
1778 | ||
1779 | case GIMPLE_EH_FILTER: | |
355a7673 | 1780 | ret = walk_gimple_seq_mod (gimple_eh_filter_failure_ptr (stmt), callback_stmt, |
726a989a RB |
1781 | callback_op, wi); |
1782 | if (ret) | |
1783 | return wi->callback_result; | |
1784 | break; | |
1785 | ||
0a35513e | 1786 | case GIMPLE_EH_ELSE: |
355a7673 | 1787 | ret = walk_gimple_seq_mod (gimple_eh_else_n_body_ptr (stmt), |
0a35513e AH |
1788 | callback_stmt, callback_op, wi); |
1789 | if (ret) | |
1790 | return wi->callback_result; | |
355a7673 | 1791 | ret = walk_gimple_seq_mod (gimple_eh_else_e_body_ptr (stmt), |
0a35513e AH |
1792 | callback_stmt, callback_op, wi); |
1793 | if (ret) | |
1794 | return wi->callback_result; | |
1795 | break; | |
1796 | ||
726a989a | 1797 | case GIMPLE_TRY: |
355a7673 | 1798 | ret = walk_gimple_seq_mod (gimple_try_eval_ptr (stmt), callback_stmt, callback_op, |
726a989a RB |
1799 | wi); |
1800 | if (ret) | |
1801 | return wi->callback_result; | |
1802 | ||
355a7673 | 1803 | ret = walk_gimple_seq_mod (gimple_try_cleanup_ptr (stmt), callback_stmt, |
726a989a RB |
1804 | callback_op, wi); |
1805 | if (ret) | |
1806 | return wi->callback_result; | |
1807 | break; | |
1808 | ||
1809 | case GIMPLE_OMP_FOR: | |
355a7673 | 1810 | ret = walk_gimple_seq_mod (gimple_omp_for_pre_body_ptr (stmt), callback_stmt, |
726a989a RB |
1811 | callback_op, wi); |
1812 | if (ret) | |
1813 | return wi->callback_result; | |
1814 | ||
1815 | /* FALL THROUGH. */ | |
1816 | case GIMPLE_OMP_CRITICAL: | |
1817 | case GIMPLE_OMP_MASTER: | |
1818 | case GIMPLE_OMP_ORDERED: | |
1819 | case GIMPLE_OMP_SECTION: | |
1820 | case GIMPLE_OMP_PARALLEL: | |
1821 | case GIMPLE_OMP_TASK: | |
1822 | case GIMPLE_OMP_SECTIONS: | |
1823 | case GIMPLE_OMP_SINGLE: | |
355a7673 | 1824 | ret = walk_gimple_seq_mod (gimple_omp_body_ptr (stmt), callback_stmt, |
0a35513e | 1825 | callback_op, wi); |
726a989a RB |
1826 | if (ret) |
1827 | return wi->callback_result; | |
1828 | break; | |
1829 | ||
1830 | case GIMPLE_WITH_CLEANUP_EXPR: | |
355a7673 | 1831 | ret = walk_gimple_seq_mod (gimple_wce_cleanup_ptr (stmt), callback_stmt, |
726a989a RB |
1832 | callback_op, wi); |
1833 | if (ret) | |
1834 | return wi->callback_result; | |
1835 | break; | |
1836 | ||
0a35513e | 1837 | case GIMPLE_TRANSACTION: |
355a7673 | 1838 | ret = walk_gimple_seq_mod (gimple_transaction_body_ptr (stmt), |
0a35513e AH |
1839 | callback_stmt, callback_op, wi); |
1840 | if (ret) | |
1841 | return wi->callback_result; | |
1842 | break; | |
1843 | ||
726a989a RB |
1844 | default: |
1845 | gcc_assert (!gimple_has_substatements (stmt)); | |
1846 | break; | |
1847 | } | |
1848 | ||
1849 | return NULL; | |
1850 | } | |
1851 | ||
1852 | ||
1853 | /* Set sequence SEQ to be the GIMPLE body for function FN. */ | |
1854 | ||
1855 | void | |
1856 | gimple_set_body (tree fndecl, gimple_seq seq) | |
1857 | { | |
1858 | struct function *fn = DECL_STRUCT_FUNCTION (fndecl); | |
1859 | if (fn == NULL) | |
1860 | { | |
1861 | /* If FNDECL still does not have a function structure associated | |
1862 | with it, then it does not make sense for it to receive a | |
1863 | GIMPLE body. */ | |
1864 | gcc_assert (seq == NULL); | |
1865 | } | |
1866 | else | |
1867 | fn->gimple_body = seq; | |
1868 | } | |
1869 | ||
1870 | ||
abbd64b9 JS |
1871 | /* Return the body of GIMPLE statements for function FN. After the |
1872 | CFG pass, the function body doesn't exist anymore because it has | |
1873 | been split up into basic blocks. In this case, it returns | |
1874 | NULL. */ | |
726a989a RB |
1875 | |
1876 | gimple_seq | |
1877 | gimple_body (tree fndecl) | |
1878 | { | |
1879 | struct function *fn = DECL_STRUCT_FUNCTION (fndecl); | |
1880 | return fn ? fn->gimple_body : NULL; | |
1881 | } | |
1882 | ||
39ecc018 JH |
1883 | /* Return true when FNDECL has Gimple body either in unlowered |
1884 | or CFG form. */ | |
1885 | bool | |
1886 | gimple_has_body_p (tree fndecl) | |
1887 | { | |
1888 | struct function *fn = DECL_STRUCT_FUNCTION (fndecl); | |
1889 | return (gimple_body (fndecl) || (fn && fn->cfg)); | |
1890 | } | |
726a989a | 1891 | |
25583c4f RS |
1892 | /* Return true if calls C1 and C2 are known to go to the same function. */ |
1893 | ||
1894 | bool | |
1895 | gimple_call_same_target_p (const_gimple c1, const_gimple c2) | |
1896 | { | |
1897 | if (gimple_call_internal_p (c1)) | |
1898 | return (gimple_call_internal_p (c2) | |
1899 | && gimple_call_internal_fn (c1) == gimple_call_internal_fn (c2)); | |
1900 | else | |
1901 | return (gimple_call_fn (c1) == gimple_call_fn (c2) | |
1902 | || (gimple_call_fndecl (c1) | |
1903 | && gimple_call_fndecl (c1) == gimple_call_fndecl (c2))); | |
1904 | } | |
1905 | ||
726a989a RB |
1906 | /* Detect flags from a GIMPLE_CALL. This is just like |
1907 | call_expr_flags, but for gimple tuples. */ | |
1908 | ||
1909 | int | |
1910 | gimple_call_flags (const_gimple stmt) | |
1911 | { | |
1912 | int flags; | |
1913 | tree decl = gimple_call_fndecl (stmt); | |
726a989a RB |
1914 | |
1915 | if (decl) | |
1916 | flags = flags_from_decl_or_type (decl); | |
25583c4f RS |
1917 | else if (gimple_call_internal_p (stmt)) |
1918 | flags = internal_fn_flags (gimple_call_internal_fn (stmt)); | |
726a989a | 1919 | else |
97e03fa1 | 1920 | flags = flags_from_decl_or_type (gimple_call_fntype (stmt)); |
726a989a | 1921 | |
9bb1a81b JM |
1922 | if (stmt->gsbase.subcode & GF_CALL_NOTHROW) |
1923 | flags |= ECF_NOTHROW; | |
1924 | ||
726a989a RB |
1925 | return flags; |
1926 | } | |
1927 | ||
25583c4f RS |
1928 | /* Return the "fn spec" string for call STMT. */ |
1929 | ||
1930 | static tree | |
1931 | gimple_call_fnspec (const_gimple stmt) | |
1932 | { | |
1933 | tree type, attr; | |
1934 | ||
1935 | type = gimple_call_fntype (stmt); | |
1936 | if (!type) | |
1937 | return NULL_TREE; | |
1938 | ||
1939 | attr = lookup_attribute ("fn spec", TYPE_ATTRIBUTES (type)); | |
1940 | if (!attr) | |
1941 | return NULL_TREE; | |
1942 | ||
1943 | return TREE_VALUE (TREE_VALUE (attr)); | |
1944 | } | |
1945 | ||
0b7b376d RG |
1946 | /* Detects argument flags for argument number ARG on call STMT. */ |
1947 | ||
1948 | int | |
1949 | gimple_call_arg_flags (const_gimple stmt, unsigned arg) | |
1950 | { | |
25583c4f | 1951 | tree attr = gimple_call_fnspec (stmt); |
0b7b376d | 1952 | |
25583c4f | 1953 | if (!attr || 1 + arg >= (unsigned) TREE_STRING_LENGTH (attr)) |
0b7b376d RG |
1954 | return 0; |
1955 | ||
1956 | switch (TREE_STRING_POINTER (attr)[1 + arg]) | |
1957 | { | |
1958 | case 'x': | |
1959 | case 'X': | |
1960 | return EAF_UNUSED; | |
1961 | ||
1962 | case 'R': | |
1963 | return EAF_DIRECT | EAF_NOCLOBBER | EAF_NOESCAPE; | |
1964 | ||
1965 | case 'r': | |
1966 | return EAF_NOCLOBBER | EAF_NOESCAPE; | |
1967 | ||
1968 | case 'W': | |
1969 | return EAF_DIRECT | EAF_NOESCAPE; | |
1970 | ||
1971 | case 'w': | |
1972 | return EAF_NOESCAPE; | |
1973 | ||
1974 | case '.': | |
1975 | default: | |
1976 | return 0; | |
1977 | } | |
1978 | } | |
1979 | ||
1980 | /* Detects return flags for the call STMT. */ | |
1981 | ||
1982 | int | |
1983 | gimple_call_return_flags (const_gimple stmt) | |
1984 | { | |
25583c4f | 1985 | tree attr; |
0b7b376d RG |
1986 | |
1987 | if (gimple_call_flags (stmt) & ECF_MALLOC) | |
1988 | return ERF_NOALIAS; | |
1989 | ||
25583c4f RS |
1990 | attr = gimple_call_fnspec (stmt); |
1991 | if (!attr || TREE_STRING_LENGTH (attr) < 1) | |
0b7b376d RG |
1992 | return 0; |
1993 | ||
1994 | switch (TREE_STRING_POINTER (attr)[0]) | |
1995 | { | |
1996 | case '1': | |
1997 | case '2': | |
1998 | case '3': | |
1999 | case '4': | |
2000 | return ERF_RETURNS_ARG | (TREE_STRING_POINTER (attr)[0] - '1'); | |
2001 | ||
2002 | case 'm': | |
2003 | return ERF_NOALIAS; | |
2004 | ||
2005 | case '.': | |
2006 | default: | |
2007 | return 0; | |
2008 | } | |
2009 | } | |
726a989a | 2010 | |
3dbe9454 | 2011 | |
726a989a RB |
2012 | /* Return true if GS is a copy assignment. */ |
2013 | ||
2014 | bool | |
2015 | gimple_assign_copy_p (gimple gs) | |
2016 | { | |
3dbe9454 RG |
2017 | return (gimple_assign_single_p (gs) |
2018 | && is_gimple_val (gimple_op (gs, 1))); | |
726a989a RB |
2019 | } |
2020 | ||
2021 | ||
2022 | /* Return true if GS is a SSA_NAME copy assignment. */ | |
2023 | ||
2024 | bool | |
2025 | gimple_assign_ssa_name_copy_p (gimple gs) | |
2026 | { | |
3dbe9454 | 2027 | return (gimple_assign_single_p (gs) |
726a989a RB |
2028 | && TREE_CODE (gimple_assign_lhs (gs)) == SSA_NAME |
2029 | && TREE_CODE (gimple_assign_rhs1 (gs)) == SSA_NAME); | |
2030 | } | |
2031 | ||
2032 | ||
726a989a RB |
2033 | /* Return true if GS is an assignment with a unary RHS, but the |
2034 | operator has no effect on the assigned value. The logic is adapted | |
2035 | from STRIP_NOPS. This predicate is intended to be used in tuplifying | |
2036 | instances in which STRIP_NOPS was previously applied to the RHS of | |
2037 | an assignment. | |
2038 | ||
2039 | NOTE: In the use cases that led to the creation of this function | |
2040 | and of gimple_assign_single_p, it is typical to test for either | |
2041 | condition and to proceed in the same manner. In each case, the | |
2042 | assigned value is represented by the single RHS operand of the | |
2043 | assignment. I suspect there may be cases where gimple_assign_copy_p, | |
2044 | gimple_assign_single_p, or equivalent logic is used where a similar | |
2045 | treatment of unary NOPs is appropriate. */ | |
b8698a0f | 2046 | |
726a989a RB |
2047 | bool |
2048 | gimple_assign_unary_nop_p (gimple gs) | |
2049 | { | |
3dbe9454 | 2050 | return (is_gimple_assign (gs) |
1a87cf0c | 2051 | && (CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (gs)) |
726a989a RB |
2052 | || gimple_assign_rhs_code (gs) == NON_LVALUE_EXPR) |
2053 | && gimple_assign_rhs1 (gs) != error_mark_node | |
2054 | && (TYPE_MODE (TREE_TYPE (gimple_assign_lhs (gs))) | |
2055 | == TYPE_MODE (TREE_TYPE (gimple_assign_rhs1 (gs))))); | |
2056 | } | |
2057 | ||
2058 | /* Set BB to be the basic block holding G. */ | |
2059 | ||
2060 | void | |
2061 | gimple_set_bb (gimple stmt, basic_block bb) | |
2062 | { | |
2063 | stmt->gsbase.bb = bb; | |
2064 | ||
2065 | /* If the statement is a label, add the label to block-to-labels map | |
2066 | so that we can speed up edge creation for GIMPLE_GOTOs. */ | |
2067 | if (cfun->cfg && gimple_code (stmt) == GIMPLE_LABEL) | |
2068 | { | |
2069 | tree t; | |
2070 | int uid; | |
2071 | ||
2072 | t = gimple_label_label (stmt); | |
2073 | uid = LABEL_DECL_UID (t); | |
2074 | if (uid == -1) | |
2075 | { | |
2076 | unsigned old_len = VEC_length (basic_block, label_to_block_map); | |
2077 | LABEL_DECL_UID (t) = uid = cfun->cfg->last_label_uid++; | |
2078 | if (old_len <= (unsigned) uid) | |
2079 | { | |
5006671f | 2080 | unsigned new_len = 3 * uid / 2 + 1; |
726a989a RB |
2081 | |
2082 | VEC_safe_grow_cleared (basic_block, gc, label_to_block_map, | |
2083 | new_len); | |
2084 | } | |
2085 | } | |
2086 | ||
2087 | VEC_replace (basic_block, label_to_block_map, uid, bb); | |
2088 | } | |
2089 | } | |
2090 | ||
2091 | ||
726a989a RB |
2092 | /* Modify the RHS of the assignment pointed-to by GSI using the |
2093 | operands in the expression tree EXPR. | |
2094 | ||
2095 | NOTE: The statement pointed-to by GSI may be reallocated if it | |
2096 | did not have enough operand slots. | |
2097 | ||
2098 | This function is useful to convert an existing tree expression into | |
2099 | the flat representation used for the RHS of a GIMPLE assignment. | |
2100 | It will reallocate memory as needed to expand or shrink the number | |
2101 | of operand slots needed to represent EXPR. | |
2102 | ||
2103 | NOTE: If you find yourself building a tree and then calling this | |
2104 | function, you are most certainly doing it the slow way. It is much | |
2105 | better to build a new assignment or to use the function | |
2106 | gimple_assign_set_rhs_with_ops, which does not require an | |
2107 | expression tree to be built. */ | |
2108 | ||
2109 | void | |
2110 | gimple_assign_set_rhs_from_tree (gimple_stmt_iterator *gsi, tree expr) | |
2111 | { | |
2112 | enum tree_code subcode; | |
0354c0c7 | 2113 | tree op1, op2, op3; |
726a989a | 2114 | |
0354c0c7 BS |
2115 | extract_ops_from_tree_1 (expr, &subcode, &op1, &op2, &op3); |
2116 | gimple_assign_set_rhs_with_ops_1 (gsi, subcode, op1, op2, op3); | |
726a989a RB |
2117 | } |
2118 | ||
2119 | ||
2120 | /* Set the RHS of assignment statement pointed-to by GSI to CODE with | |
0354c0c7 | 2121 | operands OP1, OP2 and OP3. |
726a989a RB |
2122 | |
2123 | NOTE: The statement pointed-to by GSI may be reallocated if it | |
2124 | did not have enough operand slots. */ | |
2125 | ||
2126 | void | |
0354c0c7 BS |
2127 | gimple_assign_set_rhs_with_ops_1 (gimple_stmt_iterator *gsi, enum tree_code code, |
2128 | tree op1, tree op2, tree op3) | |
726a989a RB |
2129 | { |
2130 | unsigned new_rhs_ops = get_gimple_rhs_num_ops (code); | |
2131 | gimple stmt = gsi_stmt (*gsi); | |
2132 | ||
2133 | /* If the new CODE needs more operands, allocate a new statement. */ | |
2134 | if (gimple_num_ops (stmt) < new_rhs_ops + 1) | |
2135 | { | |
2136 | tree lhs = gimple_assign_lhs (stmt); | |
2137 | gimple new_stmt = gimple_alloc (gimple_code (stmt), new_rhs_ops + 1); | |
2138 | memcpy (new_stmt, stmt, gimple_size (gimple_code (stmt))); | |
355a7673 | 2139 | gimple_init_singleton (new_stmt); |
726a989a RB |
2140 | gsi_replace (gsi, new_stmt, true); |
2141 | stmt = new_stmt; | |
2142 | ||
2143 | /* The LHS needs to be reset as this also changes the SSA name | |
2144 | on the LHS. */ | |
2145 | gimple_assign_set_lhs (stmt, lhs); | |
2146 | } | |
2147 | ||
2148 | gimple_set_num_ops (stmt, new_rhs_ops + 1); | |
2149 | gimple_set_subcode (stmt, code); | |
2150 | gimple_assign_set_rhs1 (stmt, op1); | |
2151 | if (new_rhs_ops > 1) | |
2152 | gimple_assign_set_rhs2 (stmt, op2); | |
0354c0c7 BS |
2153 | if (new_rhs_ops > 2) |
2154 | gimple_assign_set_rhs3 (stmt, op3); | |
726a989a RB |
2155 | } |
2156 | ||
2157 | ||
2158 | /* Return the LHS of a statement that performs an assignment, | |
2159 | either a GIMPLE_ASSIGN or a GIMPLE_CALL. Returns NULL_TREE | |
2160 | for a call to a function that returns no value, or for a | |
2161 | statement other than an assignment or a call. */ | |
2162 | ||
2163 | tree | |
2164 | gimple_get_lhs (const_gimple stmt) | |
2165 | { | |
e0c68ce9 | 2166 | enum gimple_code code = gimple_code (stmt); |
726a989a RB |
2167 | |
2168 | if (code == GIMPLE_ASSIGN) | |
2169 | return gimple_assign_lhs (stmt); | |
2170 | else if (code == GIMPLE_CALL) | |
2171 | return gimple_call_lhs (stmt); | |
2172 | else | |
2173 | return NULL_TREE; | |
2174 | } | |
2175 | ||
2176 | ||
2177 | /* Set the LHS of a statement that performs an assignment, | |
2178 | either a GIMPLE_ASSIGN or a GIMPLE_CALL. */ | |
2179 | ||
2180 | void | |
2181 | gimple_set_lhs (gimple stmt, tree lhs) | |
2182 | { | |
e0c68ce9 | 2183 | enum gimple_code code = gimple_code (stmt); |
726a989a RB |
2184 | |
2185 | if (code == GIMPLE_ASSIGN) | |
2186 | gimple_assign_set_lhs (stmt, lhs); | |
2187 | else if (code == GIMPLE_CALL) | |
2188 | gimple_call_set_lhs (stmt, lhs); | |
2189 | else | |
2190 | gcc_unreachable(); | |
2191 | } | |
2192 | ||
21cf7180 AO |
2193 | /* Replace the LHS of STMT, an assignment, either a GIMPLE_ASSIGN or a |
2194 | GIMPLE_CALL, with NLHS, in preparation for modifying the RHS to an | |
2195 | expression with a different value. | |
2196 | ||
2197 | This will update any annotations (say debug bind stmts) referring | |
2198 | to the original LHS, so that they use the RHS instead. This is | |
2199 | done even if NLHS and LHS are the same, for it is understood that | |
2200 | the RHS will be modified afterwards, and NLHS will not be assigned | |
2201 | an equivalent value. | |
2202 | ||
2203 | Adjusting any non-annotation uses of the LHS, if needed, is a | |
2204 | responsibility of the caller. | |
2205 | ||
2206 | The effect of this call should be pretty much the same as that of | |
2207 | inserting a copy of STMT before STMT, and then removing the | |
2208 | original stmt, at which time gsi_remove() would have update | |
2209 | annotations, but using this function saves all the inserting, | |
2210 | copying and removing. */ | |
2211 | ||
2212 | void | |
2213 | gimple_replace_lhs (gimple stmt, tree nlhs) | |
2214 | { | |
2215 | if (MAY_HAVE_DEBUG_STMTS) | |
2216 | { | |
2217 | tree lhs = gimple_get_lhs (stmt); | |
2218 | ||
2219 | gcc_assert (SSA_NAME_DEF_STMT (lhs) == stmt); | |
2220 | ||
2221 | insert_debug_temp_for_var_def (NULL, lhs); | |
2222 | } | |
2223 | ||
2224 | gimple_set_lhs (stmt, nlhs); | |
2225 | } | |
726a989a RB |
2226 | |
2227 | /* Return a deep copy of statement STMT. All the operands from STMT | |
2228 | are reallocated and copied using unshare_expr. The DEF, USE, VDEF | |
355a7673 MM |
2229 | and VUSE operand arrays are set to empty in the new copy. The new |
2230 | copy isn't part of any sequence. */ | |
726a989a RB |
2231 | |
2232 | gimple | |
2233 | gimple_copy (gimple stmt) | |
2234 | { | |
2235 | enum gimple_code code = gimple_code (stmt); | |
2236 | unsigned num_ops = gimple_num_ops (stmt); | |
2237 | gimple copy = gimple_alloc (code, num_ops); | |
2238 | unsigned i; | |
2239 | ||
2240 | /* Shallow copy all the fields from STMT. */ | |
2241 | memcpy (copy, stmt, gimple_size (code)); | |
355a7673 | 2242 | gimple_init_singleton (copy); |
726a989a RB |
2243 | |
2244 | /* If STMT has sub-statements, deep-copy them as well. */ | |
2245 | if (gimple_has_substatements (stmt)) | |
2246 | { | |
2247 | gimple_seq new_seq; | |
2248 | tree t; | |
2249 | ||
2250 | switch (gimple_code (stmt)) | |
2251 | { | |
2252 | case GIMPLE_BIND: | |
2253 | new_seq = gimple_seq_copy (gimple_bind_body (stmt)); | |
2254 | gimple_bind_set_body (copy, new_seq); | |
2255 | gimple_bind_set_vars (copy, unshare_expr (gimple_bind_vars (stmt))); | |
2256 | gimple_bind_set_block (copy, gimple_bind_block (stmt)); | |
2257 | break; | |
2258 | ||
2259 | case GIMPLE_CATCH: | |
2260 | new_seq = gimple_seq_copy (gimple_catch_handler (stmt)); | |
2261 | gimple_catch_set_handler (copy, new_seq); | |
2262 | t = unshare_expr (gimple_catch_types (stmt)); | |
2263 | gimple_catch_set_types (copy, t); | |
2264 | break; | |
2265 | ||
2266 | case GIMPLE_EH_FILTER: | |
2267 | new_seq = gimple_seq_copy (gimple_eh_filter_failure (stmt)); | |
2268 | gimple_eh_filter_set_failure (copy, new_seq); | |
2269 | t = unshare_expr (gimple_eh_filter_types (stmt)); | |
2270 | gimple_eh_filter_set_types (copy, t); | |
2271 | break; | |
2272 | ||
0a35513e AH |
2273 | case GIMPLE_EH_ELSE: |
2274 | new_seq = gimple_seq_copy (gimple_eh_else_n_body (stmt)); | |
2275 | gimple_eh_else_set_n_body (copy, new_seq); | |
2276 | new_seq = gimple_seq_copy (gimple_eh_else_e_body (stmt)); | |
2277 | gimple_eh_else_set_e_body (copy, new_seq); | |
2278 | break; | |
2279 | ||
726a989a RB |
2280 | case GIMPLE_TRY: |
2281 | new_seq = gimple_seq_copy (gimple_try_eval (stmt)); | |
2282 | gimple_try_set_eval (copy, new_seq); | |
2283 | new_seq = gimple_seq_copy (gimple_try_cleanup (stmt)); | |
2284 | gimple_try_set_cleanup (copy, new_seq); | |
2285 | break; | |
2286 | ||
2287 | case GIMPLE_OMP_FOR: | |
2288 | new_seq = gimple_seq_copy (gimple_omp_for_pre_body (stmt)); | |
2289 | gimple_omp_for_set_pre_body (copy, new_seq); | |
2290 | t = unshare_expr (gimple_omp_for_clauses (stmt)); | |
2291 | gimple_omp_for_set_clauses (copy, t); | |
2292 | copy->gimple_omp_for.iter | |
a9429e29 LB |
2293 | = ggc_alloc_vec_gimple_omp_for_iter |
2294 | (gimple_omp_for_collapse (stmt)); | |
726a989a RB |
2295 | for (i = 0; i < gimple_omp_for_collapse (stmt); i++) |
2296 | { | |
2297 | gimple_omp_for_set_cond (copy, i, | |
2298 | gimple_omp_for_cond (stmt, i)); | |
2299 | gimple_omp_for_set_index (copy, i, | |
2300 | gimple_omp_for_index (stmt, i)); | |
2301 | t = unshare_expr (gimple_omp_for_initial (stmt, i)); | |
2302 | gimple_omp_for_set_initial (copy, i, t); | |
2303 | t = unshare_expr (gimple_omp_for_final (stmt, i)); | |
2304 | gimple_omp_for_set_final (copy, i, t); | |
2305 | t = unshare_expr (gimple_omp_for_incr (stmt, i)); | |
2306 | gimple_omp_for_set_incr (copy, i, t); | |
2307 | } | |
2308 | goto copy_omp_body; | |
2309 | ||
2310 | case GIMPLE_OMP_PARALLEL: | |
2311 | t = unshare_expr (gimple_omp_parallel_clauses (stmt)); | |
2312 | gimple_omp_parallel_set_clauses (copy, t); | |
2313 | t = unshare_expr (gimple_omp_parallel_child_fn (stmt)); | |
2314 | gimple_omp_parallel_set_child_fn (copy, t); | |
2315 | t = unshare_expr (gimple_omp_parallel_data_arg (stmt)); | |
2316 | gimple_omp_parallel_set_data_arg (copy, t); | |
2317 | goto copy_omp_body; | |
2318 | ||
2319 | case GIMPLE_OMP_TASK: | |
2320 | t = unshare_expr (gimple_omp_task_clauses (stmt)); | |
2321 | gimple_omp_task_set_clauses (copy, t); | |
2322 | t = unshare_expr (gimple_omp_task_child_fn (stmt)); | |
2323 | gimple_omp_task_set_child_fn (copy, t); | |
2324 | t = unshare_expr (gimple_omp_task_data_arg (stmt)); | |
2325 | gimple_omp_task_set_data_arg (copy, t); | |
2326 | t = unshare_expr (gimple_omp_task_copy_fn (stmt)); | |
2327 | gimple_omp_task_set_copy_fn (copy, t); | |
2328 | t = unshare_expr (gimple_omp_task_arg_size (stmt)); | |
2329 | gimple_omp_task_set_arg_size (copy, t); | |
2330 | t = unshare_expr (gimple_omp_task_arg_align (stmt)); | |
2331 | gimple_omp_task_set_arg_align (copy, t); | |
2332 | goto copy_omp_body; | |
2333 | ||
2334 | case GIMPLE_OMP_CRITICAL: | |
2335 | t = unshare_expr (gimple_omp_critical_name (stmt)); | |
2336 | gimple_omp_critical_set_name (copy, t); | |
2337 | goto copy_omp_body; | |
2338 | ||
2339 | case GIMPLE_OMP_SECTIONS: | |
2340 | t = unshare_expr (gimple_omp_sections_clauses (stmt)); | |
2341 | gimple_omp_sections_set_clauses (copy, t); | |
2342 | t = unshare_expr (gimple_omp_sections_control (stmt)); | |
2343 | gimple_omp_sections_set_control (copy, t); | |
2344 | /* FALLTHRU */ | |
2345 | ||
2346 | case GIMPLE_OMP_SINGLE: | |
2347 | case GIMPLE_OMP_SECTION: | |
2348 | case GIMPLE_OMP_MASTER: | |
2349 | case GIMPLE_OMP_ORDERED: | |
2350 | copy_omp_body: | |
2351 | new_seq = gimple_seq_copy (gimple_omp_body (stmt)); | |
2352 | gimple_omp_set_body (copy, new_seq); | |
2353 | break; | |
2354 | ||
0a35513e AH |
2355 | case GIMPLE_TRANSACTION: |
2356 | new_seq = gimple_seq_copy (gimple_transaction_body (stmt)); | |
2357 | gimple_transaction_set_body (copy, new_seq); | |
2358 | break; | |
2359 | ||
726a989a RB |
2360 | case GIMPLE_WITH_CLEANUP_EXPR: |
2361 | new_seq = gimple_seq_copy (gimple_wce_cleanup (stmt)); | |
2362 | gimple_wce_set_cleanup (copy, new_seq); | |
2363 | break; | |
2364 | ||
2365 | default: | |
2366 | gcc_unreachable (); | |
2367 | } | |
2368 | } | |
2369 | ||
2370 | /* Make copy of operands. */ | |
2371 | if (num_ops > 0) | |
2372 | { | |
2373 | for (i = 0; i < num_ops; i++) | |
2374 | gimple_set_op (copy, i, unshare_expr (gimple_op (stmt, i))); | |
2375 | ||
ccacdf06 | 2376 | /* Clear out SSA operand vectors on COPY. */ |
726a989a RB |
2377 | if (gimple_has_ops (stmt)) |
2378 | { | |
2379 | gimple_set_def_ops (copy, NULL); | |
2380 | gimple_set_use_ops (copy, NULL); | |
726a989a RB |
2381 | } |
2382 | ||
2383 | if (gimple_has_mem_ops (stmt)) | |
2384 | { | |
5006671f RG |
2385 | gimple_set_vdef (copy, gimple_vdef (stmt)); |
2386 | gimple_set_vuse (copy, gimple_vuse (stmt)); | |
726a989a RB |
2387 | } |
2388 | ||
5006671f RG |
2389 | /* SSA operands need to be updated. */ |
2390 | gimple_set_modified (copy, true); | |
726a989a RB |
2391 | } |
2392 | ||
2393 | return copy; | |
2394 | } | |
2395 | ||
2396 | ||
2397 | /* Set the MODIFIED flag to MODIFIEDP, iff the gimple statement G has | |
2398 | a MODIFIED field. */ | |
2399 | ||
2400 | void | |
2401 | gimple_set_modified (gimple s, bool modifiedp) | |
2402 | { | |
2403 | if (gimple_has_ops (s)) | |
0f8c63cc | 2404 | s->gsbase.modified = (unsigned) modifiedp; |
726a989a RB |
2405 | } |
2406 | ||
2407 | ||
2408 | /* Return true if statement S has side-effects. We consider a | |
2409 | statement to have side effects if: | |
2410 | ||
2411 | - It is a GIMPLE_CALL not marked with ECF_PURE or ECF_CONST. | |
2412 | - Any of its operands are marked TREE_THIS_VOLATILE or TREE_SIDE_EFFECTS. */ | |
2413 | ||
2414 | bool | |
2415 | gimple_has_side_effects (const_gimple s) | |
2416 | { | |
b5b8b0ac AO |
2417 | if (is_gimple_debug (s)) |
2418 | return false; | |
2419 | ||
726a989a RB |
2420 | /* We don't have to scan the arguments to check for |
2421 | volatile arguments, though, at present, we still | |
2422 | do a scan to check for TREE_SIDE_EFFECTS. */ | |
2423 | if (gimple_has_volatile_ops (s)) | |
2424 | return true; | |
2425 | ||
179184e3 RG |
2426 | if (gimple_code (s) == GIMPLE_ASM |
2427 | && gimple_asm_volatile_p (s)) | |
2428 | return true; | |
2429 | ||
726a989a RB |
2430 | if (is_gimple_call (s)) |
2431 | { | |
723afc44 | 2432 | int flags = gimple_call_flags (s); |
726a989a | 2433 | |
723afc44 RG |
2434 | /* An infinite loop is considered a side effect. */ |
2435 | if (!(flags & (ECF_CONST | ECF_PURE)) | |
2436 | || (flags & ECF_LOOPING_CONST_OR_PURE)) | |
726a989a RB |
2437 | return true; |
2438 | ||
726a989a RB |
2439 | return false; |
2440 | } | |
726a989a RB |
2441 | |
2442 | return false; | |
2443 | } | |
2444 | ||
726a989a | 2445 | /* Helper for gimple_could_trap_p and gimple_assign_rhs_could_trap_p. |
e1fd038a SP |
2446 | Return true if S can trap. When INCLUDE_MEM is true, check whether |
2447 | the memory operations could trap. When INCLUDE_STORES is true and | |
2448 | S is a GIMPLE_ASSIGN, the LHS of the assignment is also checked. */ | |
726a989a | 2449 | |
e1fd038a SP |
2450 | bool |
2451 | gimple_could_trap_p_1 (gimple s, bool include_mem, bool include_stores) | |
726a989a | 2452 | { |
726a989a RB |
2453 | tree t, div = NULL_TREE; |
2454 | enum tree_code op; | |
2455 | ||
e1fd038a SP |
2456 | if (include_mem) |
2457 | { | |
2458 | unsigned i, start = (is_gimple_assign (s) && !include_stores) ? 1 : 0; | |
726a989a | 2459 | |
e1fd038a SP |
2460 | for (i = start; i < gimple_num_ops (s); i++) |
2461 | if (tree_could_trap_p (gimple_op (s, i))) | |
2462 | return true; | |
2463 | } | |
726a989a RB |
2464 | |
2465 | switch (gimple_code (s)) | |
2466 | { | |
2467 | case GIMPLE_ASM: | |
2468 | return gimple_asm_volatile_p (s); | |
2469 | ||
2470 | case GIMPLE_CALL: | |
2471 | t = gimple_call_fndecl (s); | |
2472 | /* Assume that calls to weak functions may trap. */ | |
2473 | if (!t || !DECL_P (t) || DECL_WEAK (t)) | |
2474 | return true; | |
2475 | return false; | |
2476 | ||
2477 | case GIMPLE_ASSIGN: | |
2478 | t = gimple_expr_type (s); | |
2479 | op = gimple_assign_rhs_code (s); | |
2480 | if (get_gimple_rhs_class (op) == GIMPLE_BINARY_RHS) | |
2481 | div = gimple_assign_rhs2 (s); | |
2482 | return (operation_could_trap_p (op, FLOAT_TYPE_P (t), | |
2483 | (INTEGRAL_TYPE_P (t) | |
2484 | && TYPE_OVERFLOW_TRAPS (t)), | |
2485 | div)); | |
2486 | ||
2487 | default: | |
2488 | break; | |
2489 | } | |
2490 | ||
2491 | return false; | |
726a989a RB |
2492 | } |
2493 | ||
726a989a RB |
2494 | /* Return true if statement S can trap. */ |
2495 | ||
2496 | bool | |
2497 | gimple_could_trap_p (gimple s) | |
2498 | { | |
e1fd038a | 2499 | return gimple_could_trap_p_1 (s, true, true); |
726a989a RB |
2500 | } |
2501 | ||
726a989a RB |
2502 | /* Return true if RHS of a GIMPLE_ASSIGN S can trap. */ |
2503 | ||
2504 | bool | |
2505 | gimple_assign_rhs_could_trap_p (gimple s) | |
2506 | { | |
2507 | gcc_assert (is_gimple_assign (s)); | |
e1fd038a | 2508 | return gimple_could_trap_p_1 (s, true, false); |
726a989a RB |
2509 | } |
2510 | ||
2511 | ||
2512 | /* Print debugging information for gimple stmts generated. */ | |
2513 | ||
2514 | void | |
2515 | dump_gimple_statistics (void) | |
2516 | { | |
2517 | #ifdef GATHER_STATISTICS | |
2518 | int i, total_tuples = 0, total_bytes = 0; | |
2519 | ||
2520 | fprintf (stderr, "\nGIMPLE statements\n"); | |
2521 | fprintf (stderr, "Kind Stmts Bytes\n"); | |
2522 | fprintf (stderr, "---------------------------------------\n"); | |
2523 | for (i = 0; i < (int) gimple_alloc_kind_all; ++i) | |
2524 | { | |
2525 | fprintf (stderr, "%-20s %7d %10d\n", gimple_alloc_kind_names[i], | |
2526 | gimple_alloc_counts[i], gimple_alloc_sizes[i]); | |
2527 | total_tuples += gimple_alloc_counts[i]; | |
2528 | total_bytes += gimple_alloc_sizes[i]; | |
2529 | } | |
2530 | fprintf (stderr, "---------------------------------------\n"); | |
2531 | fprintf (stderr, "%-20s %7d %10d\n", "Total", total_tuples, total_bytes); | |
2532 | fprintf (stderr, "---------------------------------------\n"); | |
2533 | #else | |
2534 | fprintf (stderr, "No gimple statistics\n"); | |
2535 | #endif | |
2536 | } | |
2537 | ||
2538 | ||
726a989a RB |
2539 | /* Return the number of operands needed on the RHS of a GIMPLE |
2540 | assignment for an expression with tree code CODE. */ | |
2541 | ||
2542 | unsigned | |
2543 | get_gimple_rhs_num_ops (enum tree_code code) | |
2544 | { | |
2545 | enum gimple_rhs_class rhs_class = get_gimple_rhs_class (code); | |
2546 | ||
2547 | if (rhs_class == GIMPLE_UNARY_RHS || rhs_class == GIMPLE_SINGLE_RHS) | |
2548 | return 1; | |
2549 | else if (rhs_class == GIMPLE_BINARY_RHS) | |
2550 | return 2; | |
0354c0c7 BS |
2551 | else if (rhs_class == GIMPLE_TERNARY_RHS) |
2552 | return 3; | |
726a989a RB |
2553 | else |
2554 | gcc_unreachable (); | |
2555 | } | |
2556 | ||
2557 | #define DEFTREECODE(SYM, STRING, TYPE, NARGS) \ | |
2558 | (unsigned char) \ | |
2559 | ((TYPE) == tcc_unary ? GIMPLE_UNARY_RHS \ | |
2560 | : ((TYPE) == tcc_binary \ | |
2561 | || (TYPE) == tcc_comparison) ? GIMPLE_BINARY_RHS \ | |
2562 | : ((TYPE) == tcc_constant \ | |
2563 | || (TYPE) == tcc_declaration \ | |
2564 | || (TYPE) == tcc_reference) ? GIMPLE_SINGLE_RHS \ | |
2565 | : ((SYM) == TRUTH_AND_EXPR \ | |
2566 | || (SYM) == TRUTH_OR_EXPR \ | |
2567 | || (SYM) == TRUTH_XOR_EXPR) ? GIMPLE_BINARY_RHS \ | |
2568 | : (SYM) == TRUTH_NOT_EXPR ? GIMPLE_UNARY_RHS \ | |
4e71066d RG |
2569 | : ((SYM) == COND_EXPR \ |
2570 | || (SYM) == WIDEN_MULT_PLUS_EXPR \ | |
16949072 | 2571 | || (SYM) == WIDEN_MULT_MINUS_EXPR \ |
f471fe72 RG |
2572 | || (SYM) == DOT_PROD_EXPR \ |
2573 | || (SYM) == REALIGN_LOAD_EXPR \ | |
4e71066d | 2574 | || (SYM) == VEC_COND_EXPR \ |
2205ed25 | 2575 | || (SYM) == VEC_PERM_EXPR \ |
16949072 | 2576 | || (SYM) == FMA_EXPR) ? GIMPLE_TERNARY_RHS \ |
4e71066d | 2577 | : ((SYM) == CONSTRUCTOR \ |
726a989a RB |
2578 | || (SYM) == OBJ_TYPE_REF \ |
2579 | || (SYM) == ASSERT_EXPR \ | |
2580 | || (SYM) == ADDR_EXPR \ | |
2581 | || (SYM) == WITH_SIZE_EXPR \ | |
4e71066d | 2582 | || (SYM) == SSA_NAME) ? GIMPLE_SINGLE_RHS \ |
726a989a RB |
2583 | : GIMPLE_INVALID_RHS), |
2584 | #define END_OF_BASE_TREE_CODES (unsigned char) GIMPLE_INVALID_RHS, | |
2585 | ||
2586 | const unsigned char gimple_rhs_class_table[] = { | |
2587 | #include "all-tree.def" | |
2588 | }; | |
2589 | ||
2590 | #undef DEFTREECODE | |
2591 | #undef END_OF_BASE_TREE_CODES | |
2592 | ||
2593 | /* For the definitive definition of GIMPLE, see doc/tree-ssa.texi. */ | |
2594 | ||
2595 | /* Validation of GIMPLE expressions. */ | |
2596 | ||
726a989a RB |
2597 | /* Return true if T is a valid LHS for a GIMPLE assignment expression. */ |
2598 | ||
2599 | bool | |
2600 | is_gimple_lvalue (tree t) | |
2601 | { | |
2602 | return (is_gimple_addressable (t) | |
2603 | || TREE_CODE (t) == WITH_SIZE_EXPR | |
2604 | /* These are complex lvalues, but don't have addresses, so they | |
2605 | go here. */ | |
2606 | || TREE_CODE (t) == BIT_FIELD_REF); | |
2607 | } | |
2608 | ||
2609 | /* Return true if T is a GIMPLE condition. */ | |
2610 | ||
2611 | bool | |
2612 | is_gimple_condexpr (tree t) | |
2613 | { | |
2614 | return (is_gimple_val (t) || (COMPARISON_CLASS_P (t) | |
f9613c9a | 2615 | && !tree_could_throw_p (t) |
726a989a RB |
2616 | && is_gimple_val (TREE_OPERAND (t, 0)) |
2617 | && is_gimple_val (TREE_OPERAND (t, 1)))); | |
2618 | } | |
2619 | ||
2620 | /* Return true if T is something whose address can be taken. */ | |
2621 | ||
2622 | bool | |
2623 | is_gimple_addressable (tree t) | |
2624 | { | |
70f34814 RG |
2625 | return (is_gimple_id (t) || handled_component_p (t) |
2626 | || TREE_CODE (t) == MEM_REF); | |
726a989a RB |
2627 | } |
2628 | ||
2629 | /* Return true if T is a valid gimple constant. */ | |
2630 | ||
2631 | bool | |
2632 | is_gimple_constant (const_tree t) | |
2633 | { | |
2634 | switch (TREE_CODE (t)) | |
2635 | { | |
2636 | case INTEGER_CST: | |
2637 | case REAL_CST: | |
2638 | case FIXED_CST: | |
2639 | case STRING_CST: | |
2640 | case COMPLEX_CST: | |
2641 | case VECTOR_CST: | |
2642 | return true; | |
2643 | ||
2644 | /* Vector constant constructors are gimple invariant. */ | |
2645 | case CONSTRUCTOR: | |
2646 | if (TREE_TYPE (t) && TREE_CODE (TREE_TYPE (t)) == VECTOR_TYPE) | |
2647 | return TREE_CONSTANT (t); | |
2648 | else | |
2649 | return false; | |
2650 | ||
2651 | default: | |
2652 | return false; | |
2653 | } | |
2654 | } | |
2655 | ||
2656 | /* Return true if T is a gimple address. */ | |
2657 | ||
2658 | bool | |
2659 | is_gimple_address (const_tree t) | |
2660 | { | |
2661 | tree op; | |
2662 | ||
2663 | if (TREE_CODE (t) != ADDR_EXPR) | |
2664 | return false; | |
2665 | ||
2666 | op = TREE_OPERAND (t, 0); | |
2667 | while (handled_component_p (op)) | |
2668 | { | |
2669 | if ((TREE_CODE (op) == ARRAY_REF | |
2670 | || TREE_CODE (op) == ARRAY_RANGE_REF) | |
2671 | && !is_gimple_val (TREE_OPERAND (op, 1))) | |
2672 | return false; | |
2673 | ||
2674 | op = TREE_OPERAND (op, 0); | |
2675 | } | |
2676 | ||
70f34814 | 2677 | if (CONSTANT_CLASS_P (op) || TREE_CODE (op) == MEM_REF) |
726a989a RB |
2678 | return true; |
2679 | ||
2680 | switch (TREE_CODE (op)) | |
2681 | { | |
2682 | case PARM_DECL: | |
2683 | case RESULT_DECL: | |
2684 | case LABEL_DECL: | |
2685 | case FUNCTION_DECL: | |
2686 | case VAR_DECL: | |
2687 | case CONST_DECL: | |
2688 | return true; | |
2689 | ||
2690 | default: | |
2691 | return false; | |
2692 | } | |
2693 | } | |
2694 | ||
00fc2333 JH |
2695 | /* Return true if T is a gimple invariant address. */ |
2696 | ||
2697 | bool | |
2698 | is_gimple_invariant_address (const_tree t) | |
2699 | { | |
2700 | const_tree op; | |
2701 | ||
2702 | if (TREE_CODE (t) != ADDR_EXPR) | |
2703 | return false; | |
2704 | ||
2705 | op = strip_invariant_refs (TREE_OPERAND (t, 0)); | |
70f34814 RG |
2706 | if (!op) |
2707 | return false; | |
00fc2333 | 2708 | |
70f34814 RG |
2709 | if (TREE_CODE (op) == MEM_REF) |
2710 | { | |
2711 | const_tree op0 = TREE_OPERAND (op, 0); | |
2712 | return (TREE_CODE (op0) == ADDR_EXPR | |
2713 | && (CONSTANT_CLASS_P (TREE_OPERAND (op0, 0)) | |
2714 | || decl_address_invariant_p (TREE_OPERAND (op0, 0)))); | |
2715 | } | |
2716 | ||
2717 | return CONSTANT_CLASS_P (op) || decl_address_invariant_p (op); | |
00fc2333 JH |
2718 | } |
2719 | ||
2720 | /* Return true if T is a gimple invariant address at IPA level | |
2721 | (so addresses of variables on stack are not allowed). */ | |
2722 | ||
2723 | bool | |
2724 | is_gimple_ip_invariant_address (const_tree t) | |
2725 | { | |
2726 | const_tree op; | |
2727 | ||
2728 | if (TREE_CODE (t) != ADDR_EXPR) | |
2729 | return false; | |
2730 | ||
2731 | op = strip_invariant_refs (TREE_OPERAND (t, 0)); | |
39cc8c3d MJ |
2732 | if (!op) |
2733 | return false; | |
2734 | ||
2735 | if (TREE_CODE (op) == MEM_REF) | |
2736 | { | |
2737 | const_tree op0 = TREE_OPERAND (op, 0); | |
2738 | return (TREE_CODE (op0) == ADDR_EXPR | |
2739 | && (CONSTANT_CLASS_P (TREE_OPERAND (op0, 0)) | |
2740 | || decl_address_ip_invariant_p (TREE_OPERAND (op0, 0)))); | |
2741 | } | |
00fc2333 | 2742 | |
39cc8c3d | 2743 | return CONSTANT_CLASS_P (op) || decl_address_ip_invariant_p (op); |
726a989a RB |
2744 | } |
2745 | ||
2746 | /* Return true if T is a GIMPLE minimal invariant. It's a restricted | |
2747 | form of function invariant. */ | |
2748 | ||
2749 | bool | |
2750 | is_gimple_min_invariant (const_tree t) | |
2751 | { | |
2752 | if (TREE_CODE (t) == ADDR_EXPR) | |
2753 | return is_gimple_invariant_address (t); | |
2754 | ||
2755 | return is_gimple_constant (t); | |
2756 | } | |
2757 | ||
00fc2333 JH |
2758 | /* Return true if T is a GIMPLE interprocedural invariant. It's a restricted |
2759 | form of gimple minimal invariant. */ | |
2760 | ||
2761 | bool | |
2762 | is_gimple_ip_invariant (const_tree t) | |
2763 | { | |
2764 | if (TREE_CODE (t) == ADDR_EXPR) | |
2765 | return is_gimple_ip_invariant_address (t); | |
2766 | ||
2767 | return is_gimple_constant (t); | |
2768 | } | |
2769 | ||
726a989a RB |
2770 | /* Return true if T is a variable. */ |
2771 | ||
2772 | bool | |
2773 | is_gimple_variable (tree t) | |
2774 | { | |
2775 | return (TREE_CODE (t) == VAR_DECL | |
2776 | || TREE_CODE (t) == PARM_DECL | |
2777 | || TREE_CODE (t) == RESULT_DECL | |
2778 | || TREE_CODE (t) == SSA_NAME); | |
2779 | } | |
2780 | ||
2781 | /* Return true if T is a GIMPLE identifier (something with an address). */ | |
2782 | ||
2783 | bool | |
2784 | is_gimple_id (tree t) | |
2785 | { | |
2786 | return (is_gimple_variable (t) | |
2787 | || TREE_CODE (t) == FUNCTION_DECL | |
2788 | || TREE_CODE (t) == LABEL_DECL | |
2789 | || TREE_CODE (t) == CONST_DECL | |
2790 | /* Allow string constants, since they are addressable. */ | |
2791 | || TREE_CODE (t) == STRING_CST); | |
2792 | } | |
2793 | ||
726a989a RB |
2794 | /* Return true if T is a non-aggregate register variable. */ |
2795 | ||
2796 | bool | |
2797 | is_gimple_reg (tree t) | |
2798 | { | |
2799 | if (TREE_CODE (t) == SSA_NAME) | |
2800 | t = SSA_NAME_VAR (t); | |
2801 | ||
726a989a RB |
2802 | if (!is_gimple_variable (t)) |
2803 | return false; | |
2804 | ||
2805 | if (!is_gimple_reg_type (TREE_TYPE (t))) | |
2806 | return false; | |
2807 | ||
2808 | /* A volatile decl is not acceptable because we can't reuse it as | |
2809 | needed. We need to copy it into a temp first. */ | |
2810 | if (TREE_THIS_VOLATILE (t)) | |
2811 | return false; | |
2812 | ||
2813 | /* We define "registers" as things that can be renamed as needed, | |
2814 | which with our infrastructure does not apply to memory. */ | |
2815 | if (needs_to_live_in_memory (t)) | |
2816 | return false; | |
2817 | ||
2818 | /* Hard register variables are an interesting case. For those that | |
2819 | are call-clobbered, we don't know where all the calls are, since | |
2820 | we don't (want to) take into account which operations will turn | |
2821 | into libcalls at the rtl level. For those that are call-saved, | |
2822 | we don't currently model the fact that calls may in fact change | |
2823 | global hard registers, nor do we examine ASM_CLOBBERS at the tree | |
2824 | level, and so miss variable changes that might imply. All around, | |
2825 | it seems safest to not do too much optimization with these at the | |
2826 | tree level at all. We'll have to rely on the rtl optimizers to | |
2827 | clean this up, as there we've got all the appropriate bits exposed. */ | |
2828 | if (TREE_CODE (t) == VAR_DECL && DECL_HARD_REGISTER (t)) | |
2829 | return false; | |
2830 | ||
4636b850 RG |
2831 | /* Complex and vector values must have been put into SSA-like form. |
2832 | That is, no assignments to the individual components. */ | |
2833 | if (TREE_CODE (TREE_TYPE (t)) == COMPLEX_TYPE | |
2834 | || TREE_CODE (TREE_TYPE (t)) == VECTOR_TYPE) | |
2835 | return DECL_GIMPLE_REG_P (t); | |
2836 | ||
726a989a RB |
2837 | return true; |
2838 | } | |
2839 | ||
2840 | ||
726a989a RB |
2841 | /* Return true if T is a GIMPLE rvalue, i.e. an identifier or a constant. */ |
2842 | ||
2843 | bool | |
2844 | is_gimple_val (tree t) | |
2845 | { | |
2846 | /* Make loads from volatiles and memory vars explicit. */ | |
2847 | if (is_gimple_variable (t) | |
2848 | && is_gimple_reg_type (TREE_TYPE (t)) | |
2849 | && !is_gimple_reg (t)) | |
2850 | return false; | |
2851 | ||
726a989a RB |
2852 | return (is_gimple_variable (t) || is_gimple_min_invariant (t)); |
2853 | } | |
2854 | ||
2855 | /* Similarly, but accept hard registers as inputs to asm statements. */ | |
2856 | ||
2857 | bool | |
2858 | is_gimple_asm_val (tree t) | |
2859 | { | |
2860 | if (TREE_CODE (t) == VAR_DECL && DECL_HARD_REGISTER (t)) | |
2861 | return true; | |
2862 | ||
2863 | return is_gimple_val (t); | |
2864 | } | |
2865 | ||
2866 | /* Return true if T is a GIMPLE minimal lvalue. */ | |
2867 | ||
2868 | bool | |
2869 | is_gimple_min_lval (tree t) | |
2870 | { | |
ba4d8f9d RG |
2871 | if (!(t = CONST_CAST_TREE (strip_invariant_refs (t)))) |
2872 | return false; | |
70f34814 | 2873 | return (is_gimple_id (t) || TREE_CODE (t) == MEM_REF); |
726a989a RB |
2874 | } |
2875 | ||
726a989a RB |
2876 | /* Return true if T is a valid function operand of a CALL_EXPR. */ |
2877 | ||
2878 | bool | |
2879 | is_gimple_call_addr (tree t) | |
2880 | { | |
2881 | return (TREE_CODE (t) == OBJ_TYPE_REF || is_gimple_val (t)); | |
2882 | } | |
2883 | ||
70f34814 RG |
2884 | /* Return true if T is a valid address operand of a MEM_REF. */ |
2885 | ||
2886 | bool | |
2887 | is_gimple_mem_ref_addr (tree t) | |
2888 | { | |
2889 | return (is_gimple_reg (t) | |
2890 | || TREE_CODE (t) == INTEGER_CST | |
2891 | || (TREE_CODE (t) == ADDR_EXPR | |
2892 | && (CONSTANT_CLASS_P (TREE_OPERAND (t, 0)) | |
2893 | || decl_address_invariant_p (TREE_OPERAND (t, 0))))); | |
2894 | } | |
2895 | ||
726a989a RB |
2896 | |
2897 | /* Given a memory reference expression T, return its base address. | |
2898 | The base address of a memory reference expression is the main | |
2899 | object being referenced. For instance, the base address for | |
2900 | 'array[i].fld[j]' is 'array'. You can think of this as stripping | |
2901 | away the offset part from a memory address. | |
2902 | ||
2903 | This function calls handled_component_p to strip away all the inner | |
2904 | parts of the memory reference until it reaches the base object. */ | |
2905 | ||
2906 | tree | |
2907 | get_base_address (tree t) | |
2908 | { | |
2909 | while (handled_component_p (t)) | |
2910 | t = TREE_OPERAND (t, 0); | |
b8698a0f | 2911 | |
4d948885 RG |
2912 | if ((TREE_CODE (t) == MEM_REF |
2913 | || TREE_CODE (t) == TARGET_MEM_REF) | |
70f34814 RG |
2914 | && TREE_CODE (TREE_OPERAND (t, 0)) == ADDR_EXPR) |
2915 | t = TREE_OPERAND (TREE_OPERAND (t, 0), 0); | |
2916 | ||
b3b9f3d0 JH |
2917 | if (TREE_CODE (t) == SSA_NAME |
2918 | || DECL_P (t) | |
726a989a RB |
2919 | || TREE_CODE (t) == STRING_CST |
2920 | || TREE_CODE (t) == CONSTRUCTOR | |
70f34814 | 2921 | || INDIRECT_REF_P (t) |
4d948885 RG |
2922 | || TREE_CODE (t) == MEM_REF |
2923 | || TREE_CODE (t) == TARGET_MEM_REF) | |
726a989a RB |
2924 | return t; |
2925 | else | |
2926 | return NULL_TREE; | |
2927 | } | |
2928 | ||
2929 | void | |
2930 | recalculate_side_effects (tree t) | |
2931 | { | |
2932 | enum tree_code code = TREE_CODE (t); | |
2933 | int len = TREE_OPERAND_LENGTH (t); | |
2934 | int i; | |
2935 | ||
2936 | switch (TREE_CODE_CLASS (code)) | |
2937 | { | |
2938 | case tcc_expression: | |
2939 | switch (code) | |
2940 | { | |
2941 | case INIT_EXPR: | |
2942 | case MODIFY_EXPR: | |
2943 | case VA_ARG_EXPR: | |
2944 | case PREDECREMENT_EXPR: | |
2945 | case PREINCREMENT_EXPR: | |
2946 | case POSTDECREMENT_EXPR: | |
2947 | case POSTINCREMENT_EXPR: | |
2948 | /* All of these have side-effects, no matter what their | |
2949 | operands are. */ | |
2950 | return; | |
2951 | ||
2952 | default: | |
2953 | break; | |
2954 | } | |
2955 | /* Fall through. */ | |
2956 | ||
2957 | case tcc_comparison: /* a comparison expression */ | |
2958 | case tcc_unary: /* a unary arithmetic expression */ | |
2959 | case tcc_binary: /* a binary arithmetic expression */ | |
2960 | case tcc_reference: /* a reference */ | |
2961 | case tcc_vl_exp: /* a function call */ | |
2962 | TREE_SIDE_EFFECTS (t) = TREE_THIS_VOLATILE (t); | |
2963 | for (i = 0; i < len; ++i) | |
2964 | { | |
2965 | tree op = TREE_OPERAND (t, i); | |
2966 | if (op && TREE_SIDE_EFFECTS (op)) | |
2967 | TREE_SIDE_EFFECTS (t) = 1; | |
2968 | } | |
2969 | break; | |
2970 | ||
13f95bdb EB |
2971 | case tcc_constant: |
2972 | /* No side-effects. */ | |
2973 | return; | |
2974 | ||
726a989a | 2975 | default: |
726a989a RB |
2976 | gcc_unreachable (); |
2977 | } | |
2978 | } | |
2979 | ||
2980 | /* Canonicalize a tree T for use in a COND_EXPR as conditional. Returns | |
2981 | a canonicalized tree that is valid for a COND_EXPR or NULL_TREE, if | |
2982 | we failed to create one. */ | |
2983 | ||
2984 | tree | |
2985 | canonicalize_cond_expr_cond (tree t) | |
2986 | { | |
b66a1bac RG |
2987 | /* Strip conversions around boolean operations. */ |
2988 | if (CONVERT_EXPR_P (t) | |
9b80d091 KT |
2989 | && (truth_value_p (TREE_CODE (TREE_OPERAND (t, 0))) |
2990 | || TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) | |
2991 | == BOOLEAN_TYPE)) | |
b66a1bac RG |
2992 | t = TREE_OPERAND (t, 0); |
2993 | ||
726a989a | 2994 | /* For !x use x == 0. */ |
12430896 | 2995 | if (TREE_CODE (t) == TRUTH_NOT_EXPR) |
726a989a RB |
2996 | { |
2997 | tree top0 = TREE_OPERAND (t, 0); | |
2998 | t = build2 (EQ_EXPR, TREE_TYPE (t), | |
2999 | top0, build_int_cst (TREE_TYPE (top0), 0)); | |
3000 | } | |
3001 | /* For cmp ? 1 : 0 use cmp. */ | |
3002 | else if (TREE_CODE (t) == COND_EXPR | |
3003 | && COMPARISON_CLASS_P (TREE_OPERAND (t, 0)) | |
3004 | && integer_onep (TREE_OPERAND (t, 1)) | |
3005 | && integer_zerop (TREE_OPERAND (t, 2))) | |
3006 | { | |
3007 | tree top0 = TREE_OPERAND (t, 0); | |
3008 | t = build2 (TREE_CODE (top0), TREE_TYPE (t), | |
3009 | TREE_OPERAND (top0, 0), TREE_OPERAND (top0, 1)); | |
3010 | } | |
3011 | ||
3012 | if (is_gimple_condexpr (t)) | |
3013 | return t; | |
3014 | ||
3015 | return NULL_TREE; | |
3016 | } | |
3017 | ||
e6c99067 DN |
3018 | /* Build a GIMPLE_CALL identical to STMT but skipping the arguments in |
3019 | the positions marked by the set ARGS_TO_SKIP. */ | |
3020 | ||
c6f7cfc1 | 3021 | gimple |
5c0466b5 | 3022 | gimple_call_copy_skip_args (gimple stmt, bitmap args_to_skip) |
c6f7cfc1 JH |
3023 | { |
3024 | int i; | |
c6f7cfc1 JH |
3025 | int nargs = gimple_call_num_args (stmt); |
3026 | VEC(tree, heap) *vargs = VEC_alloc (tree, heap, nargs); | |
3027 | gimple new_stmt; | |
3028 | ||
3029 | for (i = 0; i < nargs; i++) | |
3030 | if (!bitmap_bit_p (args_to_skip, i)) | |
3031 | VEC_quick_push (tree, vargs, gimple_call_arg (stmt, i)); | |
3032 | ||
25583c4f RS |
3033 | if (gimple_call_internal_p (stmt)) |
3034 | new_stmt = gimple_build_call_internal_vec (gimple_call_internal_fn (stmt), | |
3035 | vargs); | |
3036 | else | |
3037 | new_stmt = gimple_build_call_vec (gimple_call_fn (stmt), vargs); | |
c6f7cfc1 JH |
3038 | VEC_free (tree, heap, vargs); |
3039 | if (gimple_call_lhs (stmt)) | |
3040 | gimple_call_set_lhs (new_stmt, gimple_call_lhs (stmt)); | |
3041 | ||
5006671f RG |
3042 | gimple_set_vuse (new_stmt, gimple_vuse (stmt)); |
3043 | gimple_set_vdef (new_stmt, gimple_vdef (stmt)); | |
3044 | ||
c6f7cfc1 JH |
3045 | gimple_set_block (new_stmt, gimple_block (stmt)); |
3046 | if (gimple_has_location (stmt)) | |
3047 | gimple_set_location (new_stmt, gimple_location (stmt)); | |
8d2adc24 | 3048 | gimple_call_copy_flags (new_stmt, stmt); |
c6f7cfc1 | 3049 | gimple_call_set_chain (new_stmt, gimple_call_chain (stmt)); |
5006671f RG |
3050 | |
3051 | gimple_set_modified (new_stmt, true); | |
3052 | ||
c6f7cfc1 JH |
3053 | return new_stmt; |
3054 | } | |
3055 | ||
5006671f | 3056 | |
0ca8de87 RG |
3057 | enum gtc_mode { GTC_MERGE = 0, GTC_DIAG = 1 }; |
3058 | ||
b5e04de5 | 3059 | static hashval_t gimple_type_hash (const void *); |
d7f09764 DN |
3060 | |
3061 | /* Structure used to maintain a cache of some type pairs compared by | |
3062 | gimple_types_compatible_p when comparing aggregate types. There are | |
c4fcd06a | 3063 | three possible values for SAME_P: |
d7f09764 DN |
3064 | |
3065 | -2: The pair (T1, T2) has just been inserted in the table. | |
d7f09764 DN |
3066 | 0: T1 and T2 are different types. |
3067 | 1: T1 and T2 are the same type. | |
3068 | ||
c4fcd06a RG |
3069 | The two elements in the SAME_P array are indexed by the comparison |
3070 | mode gtc_mode. */ | |
3071 | ||
d7f09764 DN |
3072 | struct type_pair_d |
3073 | { | |
88ca1146 RG |
3074 | unsigned int uid1; |
3075 | unsigned int uid2; | |
c4fcd06a | 3076 | signed char same_p[2]; |
d7f09764 DN |
3077 | }; |
3078 | typedef struct type_pair_d *type_pair_t; | |
d4398a43 RG |
3079 | DEF_VEC_P(type_pair_t); |
3080 | DEF_VEC_ALLOC_P(type_pair_t,heap); | |
3081 | ||
a30726a4 JH |
3082 | #define GIMPLE_TYPE_PAIR_SIZE 16381 |
3083 | struct type_pair_d *type_pair_cache; | |
d7f09764 | 3084 | |
d7f09764 DN |
3085 | |
3086 | /* Lookup the pair of types T1 and T2 in *VISITED_P. Insert a new | |
3087 | entry if none existed. */ | |
3088 | ||
a30726a4 JH |
3089 | static inline type_pair_t |
3090 | lookup_type_pair (tree t1, tree t2) | |
d7f09764 | 3091 | { |
a30726a4 JH |
3092 | unsigned int index; |
3093 | unsigned int uid1, uid2; | |
d7f09764 | 3094 | |
a30726a4 JH |
3095 | if (type_pair_cache == NULL) |
3096 | type_pair_cache = XCNEWVEC (struct type_pair_d, GIMPLE_TYPE_PAIR_SIZE); | |
d7f09764 | 3097 | |
4fc07af9 JH |
3098 | if (TYPE_UID (t1) < TYPE_UID (t2)) |
3099 | { | |
a30726a4 JH |
3100 | uid1 = TYPE_UID (t1); |
3101 | uid2 = TYPE_UID (t2); | |
4fc07af9 JH |
3102 | } |
3103 | else | |
3104 | { | |
a30726a4 JH |
3105 | uid1 = TYPE_UID (t2); |
3106 | uid2 = TYPE_UID (t1); | |
4fc07af9 | 3107 | } |
a30726a4 | 3108 | gcc_checking_assert (uid1 != uid2); |
d7f09764 | 3109 | |
a30726a4 JH |
3110 | /* iterative_hash_hashval_t imply an function calls. |
3111 | We know that UIDS are in limited range. */ | |
3112 | index = ((((unsigned HOST_WIDE_INT)uid1 << HOST_BITS_PER_WIDE_INT / 2) + uid2) | |
3113 | % GIMPLE_TYPE_PAIR_SIZE); | |
3114 | if (type_pair_cache [index].uid1 == uid1 | |
3115 | && type_pair_cache [index].uid2 == uid2) | |
3116 | return &type_pair_cache[index]; | |
d7f09764 | 3117 | |
a30726a4 JH |
3118 | type_pair_cache [index].uid1 = uid1; |
3119 | type_pair_cache [index].uid2 = uid2; | |
3120 | type_pair_cache [index].same_p[0] = -2; | |
3121 | type_pair_cache [index].same_p[1] = -2; | |
3122 | ||
3123 | return &type_pair_cache[index]; | |
d7f09764 DN |
3124 | } |
3125 | ||
d4398a43 RG |
3126 | /* Per pointer state for the SCC finding. The on_sccstack flag |
3127 | is not strictly required, it is true when there is no hash value | |
3128 | recorded for the type and false otherwise. But querying that | |
3129 | is slower. */ | |
3130 | ||
3131 | struct sccs | |
3132 | { | |
3133 | unsigned int dfsnum; | |
3134 | unsigned int low; | |
3135 | bool on_sccstack; | |
3136 | union { | |
3137 | hashval_t hash; | |
c4fcd06a | 3138 | signed char same_p; |
d4398a43 RG |
3139 | } u; |
3140 | }; | |
3141 | ||
3142 | static unsigned int next_dfs_num; | |
3143 | static unsigned int gtc_next_dfs_num; | |
d7f09764 | 3144 | |
4490cae6 RG |
3145 | |
3146 | /* GIMPLE type merging cache. A direct-mapped cache based on TYPE_UID. */ | |
3147 | ||
3148 | typedef struct GTY(()) gimple_type_leader_entry_s { | |
3149 | tree type; | |
3150 | tree leader; | |
3151 | } gimple_type_leader_entry; | |
3152 | ||
3153 | #define GIMPLE_TYPE_LEADER_SIZE 16381 | |
e89964e3 MM |
3154 | static GTY((deletable, length("GIMPLE_TYPE_LEADER_SIZE"))) |
3155 | gimple_type_leader_entry *gimple_type_leader; | |
4490cae6 RG |
3156 | |
3157 | /* Lookup an existing leader for T and return it or NULL_TREE, if | |
3158 | there is none in the cache. */ | |
3159 | ||
4fc07af9 | 3160 | static inline tree |
4490cae6 RG |
3161 | gimple_lookup_type_leader (tree t) |
3162 | { | |
3163 | gimple_type_leader_entry *leader; | |
3164 | ||
3165 | if (!gimple_type_leader) | |
3166 | return NULL_TREE; | |
3167 | ||
3168 | leader = &gimple_type_leader[TYPE_UID (t) % GIMPLE_TYPE_LEADER_SIZE]; | |
3169 | if (leader->type != t) | |
3170 | return NULL_TREE; | |
3171 | ||
3172 | return leader->leader; | |
3173 | } | |
3174 | ||
77785f4f RG |
3175 | /* Return true if T1 and T2 have the same name. If FOR_COMPLETION_P is |
3176 | true then if any type has no name return false, otherwise return | |
3177 | true if both types have no names. */ | |
d7f09764 DN |
3178 | |
3179 | static bool | |
6a20ce76 | 3180 | compare_type_names_p (tree t1, tree t2) |
d7f09764 DN |
3181 | { |
3182 | tree name1 = TYPE_NAME (t1); | |
3183 | tree name2 = TYPE_NAME (t2); | |
3184 | ||
ee7a54c5 RG |
3185 | if ((name1 != NULL_TREE) != (name2 != NULL_TREE)) |
3186 | return false; | |
3187 | ||
3188 | if (name1 == NULL_TREE) | |
3189 | return true; | |
3190 | ||
3191 | /* Either both should be a TYPE_DECL or both an IDENTIFIER_NODE. */ | |
3192 | if (TREE_CODE (name1) != TREE_CODE (name2)) | |
3193 | return false; | |
3194 | ||
3195 | if (TREE_CODE (name1) == TYPE_DECL) | |
6a20ce76 RG |
3196 | name1 = DECL_NAME (name1); |
3197 | gcc_checking_assert (!name1 || TREE_CODE (name1) == IDENTIFIER_NODE); | |
d7f09764 | 3198 | |
ee7a54c5 | 3199 | if (TREE_CODE (name2) == TYPE_DECL) |
6a20ce76 RG |
3200 | name2 = DECL_NAME (name2); |
3201 | gcc_checking_assert (!name2 || TREE_CODE (name2) == IDENTIFIER_NODE); | |
d7f09764 DN |
3202 | |
3203 | /* Identifiers can be compared with pointer equality rather | |
3204 | than a string comparison. */ | |
3205 | if (name1 == name2) | |
3206 | return true; | |
3207 | ||
3208 | return false; | |
3209 | } | |
3210 | ||
d025732d EB |
3211 | /* Return true if the field decls F1 and F2 are at the same offset. |
3212 | ||
91f2fae8 | 3213 | This is intended to be used on GIMPLE types only. */ |
d7f09764 | 3214 | |
1e4bc4eb | 3215 | bool |
d025732d | 3216 | gimple_compare_field_offset (tree f1, tree f2) |
d7f09764 DN |
3217 | { |
3218 | if (DECL_OFFSET_ALIGN (f1) == DECL_OFFSET_ALIGN (f2)) | |
d025732d EB |
3219 | { |
3220 | tree offset1 = DECL_FIELD_OFFSET (f1); | |
3221 | tree offset2 = DECL_FIELD_OFFSET (f2); | |
3222 | return ((offset1 == offset2 | |
3223 | /* Once gimplification is done, self-referential offsets are | |
3224 | instantiated as operand #2 of the COMPONENT_REF built for | |
3225 | each access and reset. Therefore, they are not relevant | |
3226 | anymore and fields are interchangeable provided that they | |
3227 | represent the same access. */ | |
3228 | || (TREE_CODE (offset1) == PLACEHOLDER_EXPR | |
3229 | && TREE_CODE (offset2) == PLACEHOLDER_EXPR | |
3230 | && (DECL_SIZE (f1) == DECL_SIZE (f2) | |
3231 | || (TREE_CODE (DECL_SIZE (f1)) == PLACEHOLDER_EXPR | |
3232 | && TREE_CODE (DECL_SIZE (f2)) == PLACEHOLDER_EXPR) | |
3233 | || operand_equal_p (DECL_SIZE (f1), DECL_SIZE (f2), 0)) | |
3234 | && DECL_ALIGN (f1) == DECL_ALIGN (f2)) | |
3235 | || operand_equal_p (offset1, offset2, 0)) | |
3236 | && tree_int_cst_equal (DECL_FIELD_BIT_OFFSET (f1), | |
3237 | DECL_FIELD_BIT_OFFSET (f2))); | |
3238 | } | |
d7f09764 DN |
3239 | |
3240 | /* Fortran and C do not always agree on what DECL_OFFSET_ALIGN | |
3241 | should be, so handle differing ones specially by decomposing | |
3242 | the offset into a byte and bit offset manually. */ | |
3243 | if (host_integerp (DECL_FIELD_OFFSET (f1), 0) | |
3244 | && host_integerp (DECL_FIELD_OFFSET (f2), 0)) | |
3245 | { | |
3246 | unsigned HOST_WIDE_INT byte_offset1, byte_offset2; | |
3247 | unsigned HOST_WIDE_INT bit_offset1, bit_offset2; | |
3248 | bit_offset1 = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f1)); | |
3249 | byte_offset1 = (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f1)) | |
3250 | + bit_offset1 / BITS_PER_UNIT); | |
3251 | bit_offset2 = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f2)); | |
3252 | byte_offset2 = (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f2)) | |
3253 | + bit_offset2 / BITS_PER_UNIT); | |
3254 | if (byte_offset1 != byte_offset2) | |
3255 | return false; | |
3256 | return bit_offset1 % BITS_PER_UNIT == bit_offset2 % BITS_PER_UNIT; | |
3257 | } | |
3258 | ||
3259 | return false; | |
3260 | } | |
3261 | ||
d4398a43 | 3262 | static bool |
b5e04de5 | 3263 | gimple_types_compatible_p_1 (tree, tree, type_pair_t, |
c4fcd06a | 3264 | VEC(type_pair_t, heap) **, |
d4398a43 | 3265 | struct pointer_map_t *, struct obstack *); |
d7f09764 | 3266 | |
d4398a43 RG |
3267 | /* DFS visit the edge from the callers type pair with state *STATE to |
3268 | the pair T1, T2 while operating in FOR_MERGING_P mode. | |
3269 | Update the merging status if it is not part of the SCC containing the | |
3270 | callers pair and return it. | |
3271 | SCCSTACK, SCCSTATE and SCCSTATE_OBSTACK are state for the DFS walk done. */ | |
3272 | ||
3273 | static bool | |
b5e04de5 | 3274 | gtc_visit (tree t1, tree t2, |
d4398a43 RG |
3275 | struct sccs *state, |
3276 | VEC(type_pair_t, heap) **sccstack, | |
3277 | struct pointer_map_t *sccstate, | |
3278 | struct obstack *sccstate_obstack) | |
d7f09764 | 3279 | { |
d4398a43 RG |
3280 | struct sccs *cstate = NULL; |
3281 | type_pair_t p; | |
3282 | void **slot; | |
b5e04de5 | 3283 | tree leader1, leader2; |
d7f09764 DN |
3284 | |
3285 | /* Check first for the obvious case of pointer identity. */ | |
3286 | if (t1 == t2) | |
d4398a43 | 3287 | return true; |
d7f09764 DN |
3288 | |
3289 | /* Check that we have two types to compare. */ | |
3290 | if (t1 == NULL_TREE || t2 == NULL_TREE) | |
d4398a43 | 3291 | return false; |
d7f09764 DN |
3292 | |
3293 | /* Can't be the same type if the types don't have the same code. */ | |
3294 | if (TREE_CODE (t1) != TREE_CODE (t2)) | |
d4398a43 | 3295 | return false; |
b0cc341f RG |
3296 | |
3297 | /* Can't be the same type if they have different CV qualifiers. */ | |
3298 | if (TYPE_QUALS (t1) != TYPE_QUALS (t2)) | |
d4398a43 | 3299 | return false; |
d7f09764 | 3300 | |
61332f77 RG |
3301 | if (TREE_ADDRESSABLE (t1) != TREE_ADDRESSABLE (t2)) |
3302 | return false; | |
3303 | ||
3304 | /* Void types and nullptr types are always the same. */ | |
3305 | if (TREE_CODE (t1) == VOID_TYPE | |
3306 | || TREE_CODE (t1) == NULLPTR_TYPE) | |
d4398a43 | 3307 | return true; |
d7f09764 | 3308 | |
61332f77 RG |
3309 | /* Can't be the same type if they have different alignment or mode. */ |
3310 | if (TYPE_ALIGN (t1) != TYPE_ALIGN (t2) | |
3311 | || TYPE_MODE (t1) != TYPE_MODE (t2)) | |
3312 | return false; | |
3313 | ||
c9549072 | 3314 | /* Do some simple checks before doing three hashtable queries. */ |
b0cc341f RG |
3315 | if (INTEGRAL_TYPE_P (t1) |
3316 | || SCALAR_FLOAT_TYPE_P (t1) | |
3317 | || FIXED_POINT_TYPE_P (t1) | |
3318 | || TREE_CODE (t1) == VECTOR_TYPE | |
b23dc2c0 | 3319 | || TREE_CODE (t1) == COMPLEX_TYPE |
61332f77 RG |
3320 | || TREE_CODE (t1) == OFFSET_TYPE |
3321 | || POINTER_TYPE_P (t1)) | |
b0cc341f | 3322 | { |
61332f77 RG |
3323 | /* Can't be the same type if they have different sign or precision. */ |
3324 | if (TYPE_PRECISION (t1) != TYPE_PRECISION (t2) | |
b0cc341f | 3325 | || TYPE_UNSIGNED (t1) != TYPE_UNSIGNED (t2)) |
d4398a43 | 3326 | return false; |
b0cc341f RG |
3327 | |
3328 | if (TREE_CODE (t1) == INTEGER_TYPE | |
3329 | && (TYPE_IS_SIZETYPE (t1) != TYPE_IS_SIZETYPE (t2) | |
3330 | || TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2))) | |
d4398a43 | 3331 | return false; |
b0cc341f RG |
3332 | |
3333 | /* That's all we need to check for float and fixed-point types. */ | |
3334 | if (SCALAR_FLOAT_TYPE_P (t1) | |
3335 | || FIXED_POINT_TYPE_P (t1)) | |
d4398a43 | 3336 | return true; |
b0cc341f | 3337 | |
61332f77 | 3338 | /* For other types fall thru to more complex checks. */ |
b0cc341f | 3339 | } |
d7f09764 | 3340 | |
61332f77 RG |
3341 | /* If the types have been previously registered and found equal |
3342 | they still are. */ | |
3343 | leader1 = gimple_lookup_type_leader (t1); | |
3344 | leader2 = gimple_lookup_type_leader (t2); | |
3345 | if (leader1 == t2 | |
3346 | || t1 == leader2 | |
3347 | || (leader1 && leader1 == leader2)) | |
3348 | return true; | |
c9549072 | 3349 | |
d7f09764 DN |
3350 | /* If the hash values of t1 and t2 are different the types can't |
3351 | possibly be the same. This helps keeping the type-pair hashtable | |
3352 | small, only tracking comparisons for hash collisions. */ | |
b5e04de5 | 3353 | if (gimple_type_hash (t1) != gimple_type_hash (t2)) |
d4398a43 | 3354 | return false; |
d7f09764 | 3355 | |
d4398a43 | 3356 | /* Allocate a new cache entry for this comparison. */ |
a30726a4 | 3357 | p = lookup_type_pair (t1, t2); |
b5e04de5 | 3358 | if (p->same_p[GTC_MERGE] == 0 || p->same_p[GTC_MERGE] == 1) |
d7f09764 DN |
3359 | { |
3360 | /* We have already decided whether T1 and T2 are the | |
3361 | same, return the cached result. */ | |
b5e04de5 | 3362 | return p->same_p[GTC_MERGE] == 1; |
d7f09764 | 3363 | } |
d4398a43 | 3364 | |
d4398a43 RG |
3365 | if ((slot = pointer_map_contains (sccstate, p)) != NULL) |
3366 | cstate = (struct sccs *)*slot; | |
67701d1d | 3367 | /* Not yet visited. DFS recurse. */ |
d4398a43 | 3368 | if (!cstate) |
d7f09764 | 3369 | { |
b5e04de5 | 3370 | gimple_types_compatible_p_1 (t1, t2, p, |
67701d1d RG |
3371 | sccstack, sccstate, sccstate_obstack); |
3372 | cstate = (struct sccs *)* pointer_map_contains (sccstate, p); | |
d4398a43 | 3373 | state->low = MIN (state->low, cstate->low); |
d7f09764 | 3374 | } |
67701d1d | 3375 | /* If the type is still on the SCC stack adjust the parents low. */ |
d4398a43 RG |
3376 | if (cstate->dfsnum < state->dfsnum |
3377 | && cstate->on_sccstack) | |
3378 | state->low = MIN (cstate->dfsnum, state->low); | |
d7f09764 | 3379 | |
67701d1d RG |
3380 | /* Return the current lattice value. We start with an equality |
3381 | assumption so types part of a SCC will be optimistically | |
3382 | treated equal unless proven otherwise. */ | |
3383 | return cstate->u.same_p; | |
d4398a43 RG |
3384 | } |
3385 | ||
3386 | /* Worker for gimple_types_compatible. | |
3387 | SCCSTACK, SCCSTATE and SCCSTATE_OBSTACK are state for the DFS walk done. */ | |
3388 | ||
3389 | static bool | |
b5e04de5 | 3390 | gimple_types_compatible_p_1 (tree t1, tree t2, type_pair_t p, |
d4398a43 RG |
3391 | VEC(type_pair_t, heap) **sccstack, |
3392 | struct pointer_map_t *sccstate, | |
3393 | struct obstack *sccstate_obstack) | |
3394 | { | |
d4398a43 RG |
3395 | struct sccs *state; |
3396 | ||
b5e04de5 | 3397 | gcc_assert (p->same_p[GTC_MERGE] == -2); |
d7f09764 | 3398 | |
d4398a43 RG |
3399 | state = XOBNEW (sccstate_obstack, struct sccs); |
3400 | *pointer_map_insert (sccstate, p) = state; | |
3401 | ||
3402 | VEC_safe_push (type_pair_t, heap, *sccstack, p); | |
3403 | state->dfsnum = gtc_next_dfs_num++; | |
3404 | state->low = state->dfsnum; | |
3405 | state->on_sccstack = true; | |
67701d1d RG |
3406 | /* Start with an equality assumption. As we DFS recurse into child |
3407 | SCCs this assumption may get revisited. */ | |
3408 | state->u.same_p = 1; | |
d7f09764 | 3409 | |
e1caba18 | 3410 | /* The struct tags shall compare equal. */ |
6a20ce76 | 3411 | if (!compare_type_names_p (t1, t2)) |
e1caba18 RG |
3412 | goto different_types; |
3413 | ||
ee7a54c5 RG |
3414 | /* We may not merge typedef types to the same type in different |
3415 | contexts. */ | |
3416 | if (TYPE_NAME (t1) | |
3417 | && TREE_CODE (TYPE_NAME (t1)) == TYPE_DECL | |
3418 | && DECL_CONTEXT (TYPE_NAME (t1)) | |
3419 | && TYPE_P (DECL_CONTEXT (TYPE_NAME (t1)))) | |
3420 | { | |
3421 | if (!gtc_visit (DECL_CONTEXT (TYPE_NAME (t1)), | |
3422 | DECL_CONTEXT (TYPE_NAME (t2)), | |
3423 | state, sccstack, sccstate, sccstate_obstack)) | |
3424 | goto different_types; | |
3425 | } | |
3426 | ||
d7f09764 DN |
3427 | /* If their attributes are not the same they can't be the same type. */ |
3428 | if (!attribute_list_equal (TYPE_ATTRIBUTES (t1), TYPE_ATTRIBUTES (t2))) | |
3429 | goto different_types; | |
3430 | ||
d7f09764 DN |
3431 | /* Do type-specific comparisons. */ |
3432 | switch (TREE_CODE (t1)) | |
3433 | { | |
d4398a43 RG |
3434 | case VECTOR_TYPE: |
3435 | case COMPLEX_TYPE: | |
b5e04de5 | 3436 | if (!gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
d4398a43 RG |
3437 | state, sccstack, sccstate, sccstate_obstack)) |
3438 | goto different_types; | |
3439 | goto same_types; | |
3440 | ||
d7f09764 DN |
3441 | case ARRAY_TYPE: |
3442 | /* Array types are the same if the element types are the same and | |
3443 | the number of elements are the same. */ | |
b5e04de5 | 3444 | if (!gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
d4398a43 | 3445 | state, sccstack, sccstate, sccstate_obstack) |
b0cc341f RG |
3446 | || TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2) |
3447 | || TYPE_NONALIASED_COMPONENT (t1) != TYPE_NONALIASED_COMPONENT (t2)) | |
d7f09764 DN |
3448 | goto different_types; |
3449 | else | |
3450 | { | |
3451 | tree i1 = TYPE_DOMAIN (t1); | |
3452 | tree i2 = TYPE_DOMAIN (t2); | |
3453 | ||
3454 | /* For an incomplete external array, the type domain can be | |
3455 | NULL_TREE. Check this condition also. */ | |
3456 | if (i1 == NULL_TREE && i2 == NULL_TREE) | |
3457 | goto same_types; | |
3458 | else if (i1 == NULL_TREE || i2 == NULL_TREE) | |
3459 | goto different_types; | |
3460 | /* If for a complete array type the possibly gimplified sizes | |
3461 | are different the types are different. */ | |
3462 | else if (((TYPE_SIZE (i1) != NULL) ^ (TYPE_SIZE (i2) != NULL)) | |
3463 | || (TYPE_SIZE (i1) | |
3464 | && TYPE_SIZE (i2) | |
3465 | && !operand_equal_p (TYPE_SIZE (i1), TYPE_SIZE (i2), 0))) | |
3466 | goto different_types; | |
3467 | else | |
3468 | { | |
3469 | tree min1 = TYPE_MIN_VALUE (i1); | |
3470 | tree min2 = TYPE_MIN_VALUE (i2); | |
3471 | tree max1 = TYPE_MAX_VALUE (i1); | |
3472 | tree max2 = TYPE_MAX_VALUE (i2); | |
3473 | ||
3474 | /* The minimum/maximum values have to be the same. */ | |
3475 | if ((min1 == min2 | |
f56000ed EB |
3476 | || (min1 && min2 |
3477 | && ((TREE_CODE (min1) == PLACEHOLDER_EXPR | |
3478 | && TREE_CODE (min2) == PLACEHOLDER_EXPR) | |
3479 | || operand_equal_p (min1, min2, 0)))) | |
d7f09764 | 3480 | && (max1 == max2 |
f56000ed EB |
3481 | || (max1 && max2 |
3482 | && ((TREE_CODE (max1) == PLACEHOLDER_EXPR | |
3483 | && TREE_CODE (max2) == PLACEHOLDER_EXPR) | |
3484 | || operand_equal_p (max1, max2, 0))))) | |
d7f09764 DN |
3485 | goto same_types; |
3486 | else | |
3487 | goto different_types; | |
3488 | } | |
3489 | } | |
3490 | ||
3491 | case METHOD_TYPE: | |
3492 | /* Method types should belong to the same class. */ | |
d4398a43 | 3493 | if (!gtc_visit (TYPE_METHOD_BASETYPE (t1), TYPE_METHOD_BASETYPE (t2), |
b5e04de5 | 3494 | state, sccstack, sccstate, sccstate_obstack)) |
d7f09764 DN |
3495 | goto different_types; |
3496 | ||
3497 | /* Fallthru */ | |
3498 | ||
3499 | case FUNCTION_TYPE: | |
3500 | /* Function types are the same if the return type and arguments types | |
3501 | are the same. */ | |
b5e04de5 RG |
3502 | if (!gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
3503 | state, sccstack, sccstate, sccstate_obstack)) | |
bcee752e RG |
3504 | goto different_types; |
3505 | ||
ac9a30ae | 3506 | if (!comp_type_attributes (t1, t2)) |
d7f09764 | 3507 | goto different_types; |
bcee752e RG |
3508 | |
3509 | if (TYPE_ARG_TYPES (t1) == TYPE_ARG_TYPES (t2)) | |
3510 | goto same_types; | |
d7f09764 DN |
3511 | else |
3512 | { | |
bcee752e | 3513 | tree parms1, parms2; |
d7f09764 | 3514 | |
bcee752e RG |
3515 | for (parms1 = TYPE_ARG_TYPES (t1), parms2 = TYPE_ARG_TYPES (t2); |
3516 | parms1 && parms2; | |
3517 | parms1 = TREE_CHAIN (parms1), parms2 = TREE_CHAIN (parms2)) | |
d7f09764 | 3518 | { |
b5e04de5 RG |
3519 | if (!gtc_visit (TREE_VALUE (parms1), TREE_VALUE (parms2), |
3520 | state, sccstack, sccstate, sccstate_obstack)) | |
d7f09764 | 3521 | goto different_types; |
d7f09764 | 3522 | } |
bcee752e RG |
3523 | |
3524 | if (parms1 || parms2) | |
3525 | goto different_types; | |
3526 | ||
3527 | goto same_types; | |
d7f09764 DN |
3528 | } |
3529 | ||
b23dc2c0 RG |
3530 | case OFFSET_TYPE: |
3531 | { | |
b5e04de5 | 3532 | if (!gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
d4398a43 RG |
3533 | state, sccstack, sccstate, sccstate_obstack) |
3534 | || !gtc_visit (TYPE_OFFSET_BASETYPE (t1), | |
b5e04de5 | 3535 | TYPE_OFFSET_BASETYPE (t2), |
d4398a43 | 3536 | state, sccstack, sccstate, sccstate_obstack)) |
b23dc2c0 RG |
3537 | goto different_types; |
3538 | ||
3539 | goto same_types; | |
3540 | } | |
3541 | ||
d7f09764 DN |
3542 | case POINTER_TYPE: |
3543 | case REFERENCE_TYPE: | |
e575382e RG |
3544 | { |
3545 | /* If the two pointers have different ref-all attributes, | |
3546 | they can't be the same type. */ | |
3547 | if (TYPE_REF_CAN_ALIAS_ALL (t1) != TYPE_REF_CAN_ALIAS_ALL (t2)) | |
3548 | goto different_types; | |
d7f09764 | 3549 | |
e575382e RG |
3550 | /* Otherwise, pointer and reference types are the same if the |
3551 | pointed-to types are the same. */ | |
b5e04de5 | 3552 | if (gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
d4398a43 | 3553 | state, sccstack, sccstate, sccstate_obstack)) |
e575382e RG |
3554 | goto same_types; |
3555 | ||
3556 | goto different_types; | |
3557 | } | |
d7f09764 | 3558 | |
b0cc341f RG |
3559 | case INTEGER_TYPE: |
3560 | case BOOLEAN_TYPE: | |
3561 | { | |
3562 | tree min1 = TYPE_MIN_VALUE (t1); | |
3563 | tree max1 = TYPE_MAX_VALUE (t1); | |
3564 | tree min2 = TYPE_MIN_VALUE (t2); | |
3565 | tree max2 = TYPE_MAX_VALUE (t2); | |
3566 | bool min_equal_p = false; | |
3567 | bool max_equal_p = false; | |
3568 | ||
3569 | /* If either type has a minimum value, the other type must | |
3570 | have the same. */ | |
3571 | if (min1 == NULL_TREE && min2 == NULL_TREE) | |
3572 | min_equal_p = true; | |
3573 | else if (min1 && min2 && operand_equal_p (min1, min2, 0)) | |
3574 | min_equal_p = true; | |
3575 | ||
3576 | /* Likewise, if either type has a maximum value, the other | |
3577 | type must have the same. */ | |
3578 | if (max1 == NULL_TREE && max2 == NULL_TREE) | |
3579 | max_equal_p = true; | |
3580 | else if (max1 && max2 && operand_equal_p (max1, max2, 0)) | |
3581 | max_equal_p = true; | |
3582 | ||
3583 | if (!min_equal_p || !max_equal_p) | |
3584 | goto different_types; | |
3585 | ||
3586 | goto same_types; | |
3587 | } | |
3588 | ||
d7f09764 | 3589 | case ENUMERAL_TYPE: |
e575382e | 3590 | { |
b0cc341f RG |
3591 | /* FIXME lto, we cannot check bounds on enumeral types because |
3592 | different front ends will produce different values. | |
3593 | In C, enumeral types are integers, while in C++ each element | |
3594 | will have its own symbolic value. We should decide how enums | |
3595 | are to be represented in GIMPLE and have each front end lower | |
3596 | to that. */ | |
e575382e | 3597 | tree v1, v2; |
d7f09764 | 3598 | |
b0cc341f | 3599 | /* For enumeral types, all the values must be the same. */ |
e575382e RG |
3600 | if (TYPE_VALUES (t1) == TYPE_VALUES (t2)) |
3601 | goto same_types; | |
d7f09764 | 3602 | |
e575382e RG |
3603 | for (v1 = TYPE_VALUES (t1), v2 = TYPE_VALUES (t2); |
3604 | v1 && v2; | |
3605 | v1 = TREE_CHAIN (v1), v2 = TREE_CHAIN (v2)) | |
3606 | { | |
3607 | tree c1 = TREE_VALUE (v1); | |
3608 | tree c2 = TREE_VALUE (v2); | |
d7f09764 | 3609 | |
e575382e RG |
3610 | if (TREE_CODE (c1) == CONST_DECL) |
3611 | c1 = DECL_INITIAL (c1); | |
d7f09764 | 3612 | |
e575382e RG |
3613 | if (TREE_CODE (c2) == CONST_DECL) |
3614 | c2 = DECL_INITIAL (c2); | |
d7f09764 | 3615 | |
e575382e RG |
3616 | if (tree_int_cst_equal (c1, c2) != 1) |
3617 | goto different_types; | |
abe36b81 | 3618 | |
b5e04de5 | 3619 | if (TREE_PURPOSE (v1) != TREE_PURPOSE (v2)) |
abe36b81 | 3620 | goto different_types; |
e575382e | 3621 | } |
d7f09764 | 3622 | |
e575382e RG |
3623 | /* If one enumeration has more values than the other, they |
3624 | are not the same. */ | |
3625 | if (v1 || v2) | |
3626 | goto different_types; | |
d7f09764 | 3627 | |
e575382e RG |
3628 | goto same_types; |
3629 | } | |
d7f09764 DN |
3630 | |
3631 | case RECORD_TYPE: | |
3632 | case UNION_TYPE: | |
3633 | case QUAL_UNION_TYPE: | |
e575382e RG |
3634 | { |
3635 | tree f1, f2; | |
d7f09764 | 3636 | |
e575382e RG |
3637 | /* For aggregate types, all the fields must be the same. */ |
3638 | for (f1 = TYPE_FIELDS (t1), f2 = TYPE_FIELDS (t2); | |
3639 | f1 && f2; | |
3640 | f1 = TREE_CHAIN (f1), f2 = TREE_CHAIN (f2)) | |
3641 | { | |
17e99cdb RG |
3642 | /* Different field kinds are not compatible. */ |
3643 | if (TREE_CODE (f1) != TREE_CODE (f2)) | |
3644 | goto different_types; | |
3645 | /* Field decls must have the same name and offset. */ | |
3646 | if (TREE_CODE (f1) == FIELD_DECL | |
3647 | && (DECL_NONADDRESSABLE_P (f1) != DECL_NONADDRESSABLE_P (f2) | |
3648 | || !gimple_compare_field_offset (f1, f2))) | |
3649 | goto different_types; | |
3650 | /* All entities should have the same name and type. */ | |
b5e04de5 | 3651 | if (DECL_NAME (f1) != DECL_NAME (f2) |
b5e04de5 | 3652 | || !gtc_visit (TREE_TYPE (f1), TREE_TYPE (f2), |
d4398a43 | 3653 | state, sccstack, sccstate, sccstate_obstack)) |
e575382e RG |
3654 | goto different_types; |
3655 | } | |
d7f09764 | 3656 | |
e575382e RG |
3657 | /* If one aggregate has more fields than the other, they |
3658 | are not the same. */ | |
3659 | if (f1 || f2) | |
3660 | goto different_types; | |
d7f09764 | 3661 | |
e575382e RG |
3662 | goto same_types; |
3663 | } | |
d7f09764 | 3664 | |
d7f09764 | 3665 | default: |
b0cc341f | 3666 | gcc_unreachable (); |
d7f09764 DN |
3667 | } |
3668 | ||
3669 | /* Common exit path for types that are not compatible. */ | |
3670 | different_types: | |
d4398a43 RG |
3671 | state->u.same_p = 0; |
3672 | goto pop; | |
d7f09764 DN |
3673 | |
3674 | /* Common exit path for types that are compatible. */ | |
3675 | same_types: | |
67701d1d | 3676 | gcc_assert (state->u.same_p == 1); |
d7f09764 | 3677 | |
d4398a43 RG |
3678 | pop: |
3679 | if (state->low == state->dfsnum) | |
3680 | { | |
3681 | type_pair_t x; | |
d7f09764 | 3682 | |
67701d1d RG |
3683 | /* Pop off the SCC and set its cache values to the final |
3684 | comparison result. */ | |
d4398a43 RG |
3685 | do |
3686 | { | |
3687 | struct sccs *cstate; | |
3688 | x = VEC_pop (type_pair_t, *sccstack); | |
3689 | cstate = (struct sccs *)*pointer_map_contains (sccstate, x); | |
3690 | cstate->on_sccstack = false; | |
b5e04de5 | 3691 | x->same_p[GTC_MERGE] = state->u.same_p; |
d4398a43 RG |
3692 | } |
3693 | while (x != p); | |
3694 | } | |
d7f09764 | 3695 | |
d4398a43 RG |
3696 | return state->u.same_p; |
3697 | } | |
d7f09764 | 3698 | |
d4398a43 RG |
3699 | /* Return true iff T1 and T2 are structurally identical. When |
3700 | FOR_MERGING_P is true the an incomplete type and a complete type | |
3701 | are considered different, otherwise they are considered compatible. */ | |
d7f09764 | 3702 | |
0ca8de87 | 3703 | static bool |
b5e04de5 | 3704 | gimple_types_compatible_p (tree t1, tree t2) |
d7f09764 | 3705 | { |
d4398a43 RG |
3706 | VEC(type_pair_t, heap) *sccstack = NULL; |
3707 | struct pointer_map_t *sccstate; | |
3708 | struct obstack sccstate_obstack; | |
3709 | type_pair_t p = NULL; | |
3710 | bool res; | |
b5e04de5 | 3711 | tree leader1, leader2; |
d4398a43 RG |
3712 | |
3713 | /* Before starting to set up the SCC machinery handle simple cases. */ | |
3714 | ||
3715 | /* Check first for the obvious case of pointer identity. */ | |
3716 | if (t1 == t2) | |
3717 | return true; | |
3718 | ||
3719 | /* Check that we have two types to compare. */ | |
3720 | if (t1 == NULL_TREE || t2 == NULL_TREE) | |
3721 | return false; | |
3722 | ||
d4398a43 RG |
3723 | /* Can't be the same type if the types don't have the same code. */ |
3724 | if (TREE_CODE (t1) != TREE_CODE (t2)) | |
3725 | return false; | |
3726 | ||
3727 | /* Can't be the same type if they have different CV qualifiers. */ | |
3728 | if (TYPE_QUALS (t1) != TYPE_QUALS (t2)) | |
3729 | return false; | |
3730 | ||
61332f77 RG |
3731 | if (TREE_ADDRESSABLE (t1) != TREE_ADDRESSABLE (t2)) |
3732 | return false; | |
3733 | ||
3734 | /* Void types and nullptr types are always the same. */ | |
3735 | if (TREE_CODE (t1) == VOID_TYPE | |
3736 | || TREE_CODE (t1) == NULLPTR_TYPE) | |
d4398a43 RG |
3737 | return true; |
3738 | ||
61332f77 RG |
3739 | /* Can't be the same type if they have different alignment or mode. */ |
3740 | if (TYPE_ALIGN (t1) != TYPE_ALIGN (t2) | |
3741 | || TYPE_MODE (t1) != TYPE_MODE (t2)) | |
3742 | return false; | |
3743 | ||
d4398a43 RG |
3744 | /* Do some simple checks before doing three hashtable queries. */ |
3745 | if (INTEGRAL_TYPE_P (t1) | |
3746 | || SCALAR_FLOAT_TYPE_P (t1) | |
3747 | || FIXED_POINT_TYPE_P (t1) | |
3748 | || TREE_CODE (t1) == VECTOR_TYPE | |
3749 | || TREE_CODE (t1) == COMPLEX_TYPE | |
61332f77 RG |
3750 | || TREE_CODE (t1) == OFFSET_TYPE |
3751 | || POINTER_TYPE_P (t1)) | |
d4398a43 | 3752 | { |
61332f77 RG |
3753 | /* Can't be the same type if they have different sign or precision. */ |
3754 | if (TYPE_PRECISION (t1) != TYPE_PRECISION (t2) | |
d4398a43 RG |
3755 | || TYPE_UNSIGNED (t1) != TYPE_UNSIGNED (t2)) |
3756 | return false; | |
3757 | ||
3758 | if (TREE_CODE (t1) == INTEGER_TYPE | |
3759 | && (TYPE_IS_SIZETYPE (t1) != TYPE_IS_SIZETYPE (t2) | |
3760 | || TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2))) | |
3761 | return false; | |
3762 | ||
3763 | /* That's all we need to check for float and fixed-point types. */ | |
3764 | if (SCALAR_FLOAT_TYPE_P (t1) | |
3765 | || FIXED_POINT_TYPE_P (t1)) | |
3766 | return true; | |
3767 | ||
61332f77 | 3768 | /* For other types fall thru to more complex checks. */ |
d4398a43 RG |
3769 | } |
3770 | ||
61332f77 RG |
3771 | /* If the types have been previously registered and found equal |
3772 | they still are. */ | |
3773 | leader1 = gimple_lookup_type_leader (t1); | |
3774 | leader2 = gimple_lookup_type_leader (t2); | |
3775 | if (leader1 == t2 | |
3776 | || t1 == leader2 | |
3777 | || (leader1 && leader1 == leader2)) | |
3778 | return true; | |
d4398a43 RG |
3779 | |
3780 | /* If the hash values of t1 and t2 are different the types can't | |
3781 | possibly be the same. This helps keeping the type-pair hashtable | |
3782 | small, only tracking comparisons for hash collisions. */ | |
b5e04de5 | 3783 | if (gimple_type_hash (t1) != gimple_type_hash (t2)) |
d4398a43 RG |
3784 | return false; |
3785 | ||
3786 | /* If we've visited this type pair before (in the case of aggregates | |
3787 | with self-referential types), and we made a decision, return it. */ | |
a30726a4 | 3788 | p = lookup_type_pair (t1, t2); |
b5e04de5 | 3789 | if (p->same_p[GTC_MERGE] == 0 || p->same_p[GTC_MERGE] == 1) |
d4398a43 RG |
3790 | { |
3791 | /* We have already decided whether T1 and T2 are the | |
3792 | same, return the cached result. */ | |
b5e04de5 | 3793 | return p->same_p[GTC_MERGE] == 1; |
d4398a43 RG |
3794 | } |
3795 | ||
3796 | /* Now set up the SCC machinery for the comparison. */ | |
3797 | gtc_next_dfs_num = 1; | |
3798 | sccstate = pointer_map_create (); | |
3799 | gcc_obstack_init (&sccstate_obstack); | |
b5e04de5 | 3800 | res = gimple_types_compatible_p_1 (t1, t2, p, |
d4398a43 RG |
3801 | &sccstack, sccstate, &sccstate_obstack); |
3802 | VEC_free (type_pair_t, heap, sccstack); | |
3803 | pointer_map_destroy (sccstate); | |
3804 | obstack_free (&sccstate_obstack, NULL); | |
3805 | ||
3806 | return res; | |
3807 | } | |
d7f09764 | 3808 | |
d7f09764 DN |
3809 | |
3810 | static hashval_t | |
3811 | iterative_hash_gimple_type (tree, hashval_t, VEC(tree, heap) **, | |
b5e04de5 | 3812 | struct pointer_map_t *, struct obstack *); |
d7f09764 DN |
3813 | |
3814 | /* DFS visit the edge from the callers type with state *STATE to T. | |
3815 | Update the callers type hash V with the hash for T if it is not part | |
3816 | of the SCC containing the callers type and return it. | |
3817 | SCCSTACK, SCCSTATE and SCCSTATE_OBSTACK are state for the DFS walk done. */ | |
3818 | ||
3819 | static hashval_t | |
3820 | visit (tree t, struct sccs *state, hashval_t v, | |
3821 | VEC (tree, heap) **sccstack, | |
3822 | struct pointer_map_t *sccstate, | |
b5e04de5 | 3823 | struct obstack *sccstate_obstack) |
d7f09764 DN |
3824 | { |
3825 | struct sccs *cstate = NULL; | |
0f443ad0 | 3826 | struct tree_int_map m; |
d7f09764 DN |
3827 | void **slot; |
3828 | ||
3829 | /* If there is a hash value recorded for this type then it can't | |
3830 | possibly be part of our parent SCC. Simply mix in its hash. */ | |
0f443ad0 | 3831 | m.base.from = t; |
b5e04de5 | 3832 | if ((slot = htab_find_slot (type_hash_cache, &m, NO_INSERT)) |
0f443ad0 RG |
3833 | && *slot) |
3834 | return iterative_hash_hashval_t (((struct tree_int_map *) *slot)->to, v); | |
d7f09764 DN |
3835 | |
3836 | if ((slot = pointer_map_contains (sccstate, t)) != NULL) | |
3837 | cstate = (struct sccs *)*slot; | |
3838 | if (!cstate) | |
3839 | { | |
3840 | hashval_t tem; | |
3841 | /* Not yet visited. DFS recurse. */ | |
3842 | tem = iterative_hash_gimple_type (t, v, | |
b5e04de5 | 3843 | sccstack, sccstate, sccstate_obstack); |
d7f09764 DN |
3844 | if (!cstate) |
3845 | cstate = (struct sccs *)* pointer_map_contains (sccstate, t); | |
3846 | state->low = MIN (state->low, cstate->low); | |
3847 | /* If the type is no longer on the SCC stack and thus is not part | |
3848 | of the parents SCC mix in its hash value. Otherwise we will | |
3849 | ignore the type for hashing purposes and return the unaltered | |
3850 | hash value. */ | |
3851 | if (!cstate->on_sccstack) | |
3852 | return tem; | |
3853 | } | |
3854 | if (cstate->dfsnum < state->dfsnum | |
3855 | && cstate->on_sccstack) | |
3856 | state->low = MIN (cstate->dfsnum, state->low); | |
3857 | ||
3858 | /* We are part of our parents SCC, skip this type during hashing | |
3859 | and return the unaltered hash value. */ | |
3860 | return v; | |
3861 | } | |
3862 | ||
77785f4f | 3863 | /* Hash NAME with the previous hash value V and return it. */ |
d7f09764 DN |
3864 | |
3865 | static hashval_t | |
77785f4f | 3866 | iterative_hash_name (tree name, hashval_t v) |
d7f09764 | 3867 | { |
d7f09764 DN |
3868 | if (!name) |
3869 | return v; | |
ee7a54c5 | 3870 | v = iterative_hash_hashval_t (TREE_CODE (name), v); |
d7f09764 DN |
3871 | if (TREE_CODE (name) == TYPE_DECL) |
3872 | name = DECL_NAME (name); | |
3873 | if (!name) | |
3874 | return v; | |
3875 | gcc_assert (TREE_CODE (name) == IDENTIFIER_NODE); | |
d7f09764 DN |
3876 | return iterative_hash_object (IDENTIFIER_HASH_VALUE (name), v); |
3877 | } | |
3878 | ||
3066f593 RG |
3879 | /* A type, hashvalue pair for sorting SCC members. */ |
3880 | ||
3881 | struct type_hash_pair { | |
3882 | tree type; | |
3883 | hashval_t hash; | |
3884 | }; | |
3885 | ||
3886 | /* Compare two type, hashvalue pairs. */ | |
3887 | ||
3888 | static int | |
3889 | type_hash_pair_compare (const void *p1_, const void *p2_) | |
3890 | { | |
3891 | const struct type_hash_pair *p1 = (const struct type_hash_pair *) p1_; | |
3892 | const struct type_hash_pair *p2 = (const struct type_hash_pair *) p2_; | |
5beaf664 RG |
3893 | if (p1->hash < p2->hash) |
3894 | return -1; | |
3895 | else if (p1->hash > p2->hash) | |
3896 | return 1; | |
3897 | return 0; | |
3066f593 RG |
3898 | } |
3899 | ||
d7f09764 DN |
3900 | /* Returning a hash value for gimple type TYPE combined with VAL. |
3901 | SCCSTACK, SCCSTATE and SCCSTATE_OBSTACK are state for the DFS walk done. | |
3902 | ||
3903 | To hash a type we end up hashing in types that are reachable. | |
3904 | Through pointers we can end up with cycles which messes up the | |
3905 | required property that we need to compute the same hash value | |
3906 | for structurally equivalent types. To avoid this we have to | |
3907 | hash all types in a cycle (the SCC) in a commutative way. The | |
3908 | easiest way is to not mix in the hashes of the SCC members at | |
3909 | all. To make this work we have to delay setting the hash | |
3910 | values of the SCC until it is complete. */ | |
3911 | ||
3912 | static hashval_t | |
3913 | iterative_hash_gimple_type (tree type, hashval_t val, | |
3914 | VEC(tree, heap) **sccstack, | |
3915 | struct pointer_map_t *sccstate, | |
b5e04de5 | 3916 | struct obstack *sccstate_obstack) |
d7f09764 DN |
3917 | { |
3918 | hashval_t v; | |
3919 | void **slot; | |
3920 | struct sccs *state; | |
3921 | ||
0f443ad0 | 3922 | /* Not visited during this DFS walk. */ |
77a74ed7 | 3923 | gcc_checking_assert (!pointer_map_contains (sccstate, type)); |
d7f09764 DN |
3924 | state = XOBNEW (sccstate_obstack, struct sccs); |
3925 | *pointer_map_insert (sccstate, type) = state; | |
3926 | ||
3927 | VEC_safe_push (tree, heap, *sccstack, type); | |
3928 | state->dfsnum = next_dfs_num++; | |
3929 | state->low = state->dfsnum; | |
3930 | state->on_sccstack = true; | |
3931 | ||
3932 | /* Combine a few common features of types so that types are grouped into | |
3933 | smaller sets; when searching for existing matching types to merge, | |
3934 | only existing types having the same features as the new type will be | |
3935 | checked. */ | |
e1caba18 | 3936 | v = iterative_hash_name (TYPE_NAME (type), 0); |
ee7a54c5 RG |
3937 | if (TYPE_NAME (type) |
3938 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
3939 | && DECL_CONTEXT (TYPE_NAME (type)) | |
3940 | && TYPE_P (DECL_CONTEXT (TYPE_NAME (type)))) | |
3941 | v = visit (DECL_CONTEXT (TYPE_NAME (type)), state, v, | |
3942 | sccstack, sccstate, sccstate_obstack); | |
e1caba18 | 3943 | v = iterative_hash_hashval_t (TREE_CODE (type), v); |
d7f09764 DN |
3944 | v = iterative_hash_hashval_t (TYPE_QUALS (type), v); |
3945 | v = iterative_hash_hashval_t (TREE_ADDRESSABLE (type), v); | |
3946 | ||
3947 | /* Do not hash the types size as this will cause differences in | |
3948 | hash values for the complete vs. the incomplete type variant. */ | |
3949 | ||
3950 | /* Incorporate common features of numerical types. */ | |
3951 | if (INTEGRAL_TYPE_P (type) | |
3952 | || SCALAR_FLOAT_TYPE_P (type) | |
3953 | || FIXED_POINT_TYPE_P (type)) | |
3954 | { | |
3955 | v = iterative_hash_hashval_t (TYPE_PRECISION (type), v); | |
3956 | v = iterative_hash_hashval_t (TYPE_MODE (type), v); | |
3957 | v = iterative_hash_hashval_t (TYPE_UNSIGNED (type), v); | |
3958 | } | |
3959 | ||
3960 | /* For pointer and reference types, fold in information about the type | |
1e83b5f1 | 3961 | pointed to. */ |
d7f09764 | 3962 | if (POINTER_TYPE_P (type)) |
1e83b5f1 RG |
3963 | v = visit (TREE_TYPE (type), state, v, |
3964 | sccstack, sccstate, sccstate_obstack); | |
d7f09764 | 3965 | |
f798226d RG |
3966 | /* For integer types hash the types min/max values and the string flag. */ |
3967 | if (TREE_CODE (type) == INTEGER_TYPE) | |
3968 | { | |
429c98c9 RG |
3969 | /* OMP lowering can introduce error_mark_node in place of |
3970 | random local decls in types. */ | |
3971 | if (TYPE_MIN_VALUE (type) != error_mark_node) | |
3972 | v = iterative_hash_expr (TYPE_MIN_VALUE (type), v); | |
3973 | if (TYPE_MAX_VALUE (type) != error_mark_node) | |
3974 | v = iterative_hash_expr (TYPE_MAX_VALUE (type), v); | |
f798226d RG |
3975 | v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v); |
3976 | } | |
3977 | ||
3978 | /* For array types hash their domain and the string flag. */ | |
3979 | if (TREE_CODE (type) == ARRAY_TYPE | |
3980 | && TYPE_DOMAIN (type)) | |
3981 | { | |
3982 | v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v); | |
3983 | v = visit (TYPE_DOMAIN (type), state, v, | |
b5e04de5 | 3984 | sccstack, sccstate, sccstate_obstack); |
f798226d RG |
3985 | } |
3986 | ||
3987 | /* Recurse for aggregates with a single element type. */ | |
d7f09764 DN |
3988 | if (TREE_CODE (type) == ARRAY_TYPE |
3989 | || TREE_CODE (type) == COMPLEX_TYPE | |
3990 | || TREE_CODE (type) == VECTOR_TYPE) | |
3991 | v = visit (TREE_TYPE (type), state, v, | |
b5e04de5 | 3992 | sccstack, sccstate, sccstate_obstack); |
d7f09764 DN |
3993 | |
3994 | /* Incorporate function return and argument types. */ | |
3995 | if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE) | |
3996 | { | |
3997 | unsigned na; | |
3998 | tree p; | |
3999 | ||
4000 | /* For method types also incorporate their parent class. */ | |
4001 | if (TREE_CODE (type) == METHOD_TYPE) | |
4002 | v = visit (TYPE_METHOD_BASETYPE (type), state, v, | |
b5e04de5 | 4003 | sccstack, sccstate, sccstate_obstack); |
d7f09764 | 4004 | |
1e83b5f1 RG |
4005 | /* Check result and argument types. */ |
4006 | v = visit (TREE_TYPE (type), state, v, | |
4007 | sccstack, sccstate, sccstate_obstack); | |
d7f09764 DN |
4008 | for (p = TYPE_ARG_TYPES (type), na = 0; p; p = TREE_CHAIN (p)) |
4009 | { | |
1e83b5f1 RG |
4010 | v = visit (TREE_VALUE (p), state, v, |
4011 | sccstack, sccstate, sccstate_obstack); | |
d7f09764 DN |
4012 | na++; |
4013 | } | |
4014 | ||
4015 | v = iterative_hash_hashval_t (na, v); | |
4016 | } | |
4017 | ||
aa47290b | 4018 | if (RECORD_OR_UNION_TYPE_P (type)) |
d7f09764 DN |
4019 | { |
4020 | unsigned nf; | |
4021 | tree f; | |
4022 | ||
d7f09764 DN |
4023 | for (f = TYPE_FIELDS (type), nf = 0; f; f = TREE_CHAIN (f)) |
4024 | { | |
b5e04de5 | 4025 | v = iterative_hash_name (DECL_NAME (f), v); |
d7f09764 | 4026 | v = visit (TREE_TYPE (f), state, v, |
b5e04de5 | 4027 | sccstack, sccstate, sccstate_obstack); |
d7f09764 DN |
4028 | nf++; |
4029 | } | |
4030 | ||
4031 | v = iterative_hash_hashval_t (nf, v); | |
4032 | } | |
4033 | ||
4034 | /* Record hash for us. */ | |
d4398a43 | 4035 | state->u.hash = v; |
d7f09764 DN |
4036 | |
4037 | /* See if we found an SCC. */ | |
4038 | if (state->low == state->dfsnum) | |
4039 | { | |
4040 | tree x; | |
3066f593 | 4041 | struct tree_int_map *m; |
d7f09764 DN |
4042 | |
4043 | /* Pop off the SCC and set its hash values. */ | |
3066f593 | 4044 | x = VEC_pop (tree, *sccstack); |
3066f593 RG |
4045 | /* Optimize SCC size one. */ |
4046 | if (x == type) | |
d7f09764 | 4047 | { |
008bad7a | 4048 | state->on_sccstack = false; |
3066f593 | 4049 | m = ggc_alloc_cleared_tree_int_map (); |
0f443ad0 | 4050 | m->base.from = x; |
008bad7a | 4051 | m->to = v; |
b5e04de5 | 4052 | slot = htab_find_slot (type_hash_cache, m, INSERT); |
0f443ad0 RG |
4053 | gcc_assert (!*slot); |
4054 | *slot = (void *) m; | |
d7f09764 | 4055 | } |
3066f593 RG |
4056 | else |
4057 | { | |
008bad7a | 4058 | struct sccs *cstate; |
3066f593 RG |
4059 | unsigned first, i, size, j; |
4060 | struct type_hash_pair *pairs; | |
4061 | /* Pop off the SCC and build an array of type, hash pairs. */ | |
4062 | first = VEC_length (tree, *sccstack) - 1; | |
4063 | while (VEC_index (tree, *sccstack, first) != type) | |
4064 | --first; | |
4065 | size = VEC_length (tree, *sccstack) - first + 1; | |
4066 | pairs = XALLOCAVEC (struct type_hash_pair, size); | |
4067 | i = 0; | |
008bad7a RG |
4068 | cstate = (struct sccs *)*pointer_map_contains (sccstate, x); |
4069 | cstate->on_sccstack = false; | |
3066f593 RG |
4070 | pairs[i].type = x; |
4071 | pairs[i].hash = cstate->u.hash; | |
4072 | do | |
4073 | { | |
4074 | x = VEC_pop (tree, *sccstack); | |
4075 | cstate = (struct sccs *)*pointer_map_contains (sccstate, x); | |
4076 | cstate->on_sccstack = false; | |
4077 | ++i; | |
4078 | pairs[i].type = x; | |
4079 | pairs[i].hash = cstate->u.hash; | |
4080 | } | |
4081 | while (x != type); | |
4082 | gcc_assert (i + 1 == size); | |
4083 | /* Sort the arrays of type, hash pairs so that when we mix in | |
4084 | all members of the SCC the hash value becomes independent on | |
4085 | the order we visited the SCC. Disregard hashes equal to | |
4086 | the hash of the type we mix into because we cannot guarantee | |
4087 | a stable sort for those across different TUs. */ | |
4088 | qsort (pairs, size, sizeof (struct type_hash_pair), | |
4089 | type_hash_pair_compare); | |
4090 | for (i = 0; i < size; ++i) | |
4091 | { | |
4092 | hashval_t hash; | |
4093 | m = ggc_alloc_cleared_tree_int_map (); | |
4094 | m->base.from = pairs[i].type; | |
4095 | hash = pairs[i].hash; | |
4096 | /* Skip same hashes. */ | |
4097 | for (j = i + 1; j < size && pairs[j].hash == pairs[i].hash; ++j) | |
4098 | ; | |
4099 | for (; j < size; ++j) | |
4100 | hash = iterative_hash_hashval_t (pairs[j].hash, hash); | |
4101 | for (j = 0; pairs[j].hash != pairs[i].hash; ++j) | |
4102 | hash = iterative_hash_hashval_t (pairs[j].hash, hash); | |
4103 | m->to = hash; | |
008bad7a RG |
4104 | if (pairs[i].type == type) |
4105 | v = hash; | |
3066f593 RG |
4106 | slot = htab_find_slot (type_hash_cache, m, INSERT); |
4107 | gcc_assert (!*slot); | |
4108 | *slot = (void *) m; | |
4109 | } | |
4110 | } | |
d7f09764 DN |
4111 | } |
4112 | ||
4113 | return iterative_hash_hashval_t (v, val); | |
4114 | } | |
4115 | ||
4116 | ||
4117 | /* Returns a hash value for P (assumed to be a type). The hash value | |
4118 | is computed using some distinguishing features of the type. Note | |
4119 | that we cannot use pointer hashing here as we may be dealing with | |
4120 | two distinct instances of the same type. | |
4121 | ||
4122 | This function should produce the same hash value for two compatible | |
4123 | types according to gimple_types_compatible_p. */ | |
4124 | ||
4125 | static hashval_t | |
b5e04de5 | 4126 | gimple_type_hash (const void *p) |
d7f09764 | 4127 | { |
ddd4d0e1 | 4128 | const_tree t = (const_tree) p; |
d7f09764 DN |
4129 | VEC(tree, heap) *sccstack = NULL; |
4130 | struct pointer_map_t *sccstate; | |
4131 | struct obstack sccstate_obstack; | |
4132 | hashval_t val; | |
4133 | void **slot; | |
0f443ad0 | 4134 | struct tree_int_map m; |
d7f09764 | 4135 | |
b5e04de5 | 4136 | if (type_hash_cache == NULL) |
0f443ad0 RG |
4137 | type_hash_cache = htab_create_ggc (512, tree_int_map_hash, |
4138 | tree_int_map_eq, NULL); | |
d7f09764 | 4139 | |
0f443ad0 | 4140 | m.base.from = CONST_CAST_TREE (t); |
b5e04de5 | 4141 | if ((slot = htab_find_slot (type_hash_cache, &m, NO_INSERT)) |
0f443ad0 RG |
4142 | && *slot) |
4143 | return iterative_hash_hashval_t (((struct tree_int_map *) *slot)->to, 0); | |
d7f09764 DN |
4144 | |
4145 | /* Perform a DFS walk and pre-hash all reachable types. */ | |
4146 | next_dfs_num = 1; | |
4147 | sccstate = pointer_map_create (); | |
4148 | gcc_obstack_init (&sccstate_obstack); | |
ddd4d0e1 | 4149 | val = iterative_hash_gimple_type (CONST_CAST_TREE (t), 0, |
b5e04de5 | 4150 | &sccstack, sccstate, &sccstate_obstack); |
d7f09764 DN |
4151 | VEC_free (tree, heap, sccstack); |
4152 | pointer_map_destroy (sccstate); | |
4153 | obstack_free (&sccstate_obstack, NULL); | |
4154 | ||
4155 | return val; | |
4156 | } | |
4157 | ||
825b27de RG |
4158 | /* Returning a hash value for gimple type TYPE combined with VAL. |
4159 | ||
4160 | The hash value returned is equal for types considered compatible | |
4161 | by gimple_canonical_types_compatible_p. */ | |
4162 | ||
4163 | static hashval_t | |
4164 | iterative_hash_canonical_type (tree type, hashval_t val) | |
4165 | { | |
4166 | hashval_t v; | |
4167 | void **slot; | |
4168 | struct tree_int_map *mp, m; | |
4169 | ||
4170 | m.base.from = type; | |
4171 | if ((slot = htab_find_slot (canonical_type_hash_cache, &m, INSERT)) | |
4172 | && *slot) | |
d0340959 | 4173 | return iterative_hash_hashval_t (((struct tree_int_map *) *slot)->to, val); |
825b27de RG |
4174 | |
4175 | /* Combine a few common features of types so that types are grouped into | |
4176 | smaller sets; when searching for existing matching types to merge, | |
4177 | only existing types having the same features as the new type will be | |
4178 | checked. */ | |
4179 | v = iterative_hash_hashval_t (TREE_CODE (type), 0); | |
825b27de | 4180 | v = iterative_hash_hashval_t (TREE_ADDRESSABLE (type), v); |
61332f77 RG |
4181 | v = iterative_hash_hashval_t (TYPE_ALIGN (type), v); |
4182 | v = iterative_hash_hashval_t (TYPE_MODE (type), v); | |
825b27de RG |
4183 | |
4184 | /* Incorporate common features of numerical types. */ | |
4185 | if (INTEGRAL_TYPE_P (type) | |
4186 | || SCALAR_FLOAT_TYPE_P (type) | |
61332f77 RG |
4187 | || FIXED_POINT_TYPE_P (type) |
4188 | || TREE_CODE (type) == VECTOR_TYPE | |
4189 | || TREE_CODE (type) == COMPLEX_TYPE | |
4190 | || TREE_CODE (type) == OFFSET_TYPE | |
4191 | || POINTER_TYPE_P (type)) | |
825b27de RG |
4192 | { |
4193 | v = iterative_hash_hashval_t (TYPE_PRECISION (type), v); | |
825b27de RG |
4194 | v = iterative_hash_hashval_t (TYPE_UNSIGNED (type), v); |
4195 | } | |
4196 | ||
4197 | /* For pointer and reference types, fold in information about the type | |
4198 | pointed to but do not recurse to the pointed-to type. */ | |
4199 | if (POINTER_TYPE_P (type)) | |
4200 | { | |
4201 | v = iterative_hash_hashval_t (TYPE_REF_CAN_ALIAS_ALL (type), v); | |
61332f77 RG |
4202 | v = iterative_hash_hashval_t (TYPE_ADDR_SPACE (TREE_TYPE (type)), v); |
4203 | v = iterative_hash_hashval_t (TYPE_RESTRICT (type), v); | |
825b27de RG |
4204 | v = iterative_hash_hashval_t (TREE_CODE (TREE_TYPE (type)), v); |
4205 | } | |
4206 | ||
4207 | /* For integer types hash the types min/max values and the string flag. */ | |
4208 | if (TREE_CODE (type) == INTEGER_TYPE) | |
4209 | { | |
825b27de | 4210 | v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v); |
61332f77 | 4211 | v = iterative_hash_hashval_t (TYPE_IS_SIZETYPE (type), v); |
825b27de RG |
4212 | } |
4213 | ||
4214 | /* For array types hash their domain and the string flag. */ | |
4215 | if (TREE_CODE (type) == ARRAY_TYPE | |
4216 | && TYPE_DOMAIN (type)) | |
4217 | { | |
4218 | v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v); | |
4219 | v = iterative_hash_canonical_type (TYPE_DOMAIN (type), v); | |
4220 | } | |
4221 | ||
4222 | /* Recurse for aggregates with a single element type. */ | |
4223 | if (TREE_CODE (type) == ARRAY_TYPE | |
4224 | || TREE_CODE (type) == COMPLEX_TYPE | |
4225 | || TREE_CODE (type) == VECTOR_TYPE) | |
4226 | v = iterative_hash_canonical_type (TREE_TYPE (type), v); | |
4227 | ||
4228 | /* Incorporate function return and argument types. */ | |
4229 | if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE) | |
4230 | { | |
4231 | unsigned na; | |
4232 | tree p; | |
4233 | ||
4234 | /* For method types also incorporate their parent class. */ | |
4235 | if (TREE_CODE (type) == METHOD_TYPE) | |
4236 | v = iterative_hash_canonical_type (TYPE_METHOD_BASETYPE (type), v); | |
4237 | ||
6a20ce76 | 4238 | v = iterative_hash_canonical_type (TREE_TYPE (type), v); |
825b27de RG |
4239 | |
4240 | for (p = TYPE_ARG_TYPES (type), na = 0; p; p = TREE_CHAIN (p)) | |
4241 | { | |
6a20ce76 | 4242 | v = iterative_hash_canonical_type (TREE_VALUE (p), v); |
825b27de RG |
4243 | na++; |
4244 | } | |
4245 | ||
4246 | v = iterative_hash_hashval_t (na, v); | |
4247 | } | |
4248 | ||
aa47290b | 4249 | if (RECORD_OR_UNION_TYPE_P (type)) |
825b27de RG |
4250 | { |
4251 | unsigned nf; | |
4252 | tree f; | |
4253 | ||
4254 | for (f = TYPE_FIELDS (type), nf = 0; f; f = TREE_CHAIN (f)) | |
e7cfe241 RG |
4255 | if (TREE_CODE (f) == FIELD_DECL) |
4256 | { | |
4257 | v = iterative_hash_canonical_type (TREE_TYPE (f), v); | |
4258 | nf++; | |
4259 | } | |
825b27de RG |
4260 | |
4261 | v = iterative_hash_hashval_t (nf, v); | |
4262 | } | |
4263 | ||
4264 | /* Cache the just computed hash value. */ | |
4265 | mp = ggc_alloc_cleared_tree_int_map (); | |
4266 | mp->base.from = type; | |
4267 | mp->to = v; | |
4268 | *slot = (void *) mp; | |
4269 | ||
4270 | return iterative_hash_hashval_t (v, val); | |
4271 | } | |
4272 | ||
a844a60b RG |
4273 | static hashval_t |
4274 | gimple_canonical_type_hash (const void *p) | |
4275 | { | |
825b27de RG |
4276 | if (canonical_type_hash_cache == NULL) |
4277 | canonical_type_hash_cache = htab_create_ggc (512, tree_int_map_hash, | |
4278 | tree_int_map_eq, NULL); | |
4279 | ||
4280 | return iterative_hash_canonical_type (CONST_CAST_TREE ((const_tree) p), 0); | |
a844a60b RG |
4281 | } |
4282 | ||
d7f09764 DN |
4283 | |
4284 | /* Returns nonzero if P1 and P2 are equal. */ | |
4285 | ||
4286 | static int | |
4287 | gimple_type_eq (const void *p1, const void *p2) | |
4288 | { | |
4289 | const_tree t1 = (const_tree) p1; | |
4290 | const_tree t2 = (const_tree) p2; | |
f5d6836a | 4291 | return gimple_types_compatible_p (CONST_CAST_TREE (t1), |
b5e04de5 | 4292 | CONST_CAST_TREE (t2)); |
d7f09764 DN |
4293 | } |
4294 | ||
4295 | ||
93b2a207 RG |
4296 | /* Worker for gimple_register_type. |
4297 | Register type T in the global type table gimple_types. | |
4298 | When REGISTERING_MV is false first recurse for the main variant of T. */ | |
d7f09764 | 4299 | |
93b2a207 RG |
4300 | static tree |
4301 | gimple_register_type_1 (tree t, bool registering_mv) | |
d7f09764 DN |
4302 | { |
4303 | void **slot; | |
4490cae6 | 4304 | gimple_type_leader_entry *leader; |
d7f09764 | 4305 | |
4490cae6 RG |
4306 | /* If we registered this type before return the cached result. */ |
4307 | leader = &gimple_type_leader[TYPE_UID (t) % GIMPLE_TYPE_LEADER_SIZE]; | |
4308 | if (leader->type == t) | |
4309 | return leader->leader; | |
4a2ac96f | 4310 | |
20d36f0e RG |
4311 | /* Always register the main variant first. This is important so we |
4312 | pick up the non-typedef variants as canonical, otherwise we'll end | |
93b2a207 RG |
4313 | up taking typedef ids for structure tags during comparison. |
4314 | It also makes sure that main variants will be merged to main variants. | |
4315 | As we are operating on a possibly partially fixed up type graph | |
4316 | do not bother to recurse more than once, otherwise we may end up | |
31b3ca64 RG |
4317 | walking in circles. |
4318 | If we are registering a main variant it will either remain its | |
4319 | own main variant or it will be merged to something else in which | |
4320 | case we do not care for the main variant leader. */ | |
93b2a207 RG |
4321 | if (!registering_mv |
4322 | && TYPE_MAIN_VARIANT (t) != t) | |
fb291a1e | 4323 | gimple_register_type_1 (TYPE_MAIN_VARIANT (t), true); |
d7f09764 | 4324 | |
fb291a1e | 4325 | /* See if we already have an equivalent type registered. */ |
d7f09764 DN |
4326 | slot = htab_find_slot (gimple_types, t, INSERT); |
4327 | if (*slot | |
4328 | && *(tree *)slot != t) | |
4329 | { | |
4330 | tree new_type = (tree) *((tree *) slot); | |
4490cae6 RG |
4331 | leader->type = t; |
4332 | leader->leader = new_type; | |
fb291a1e | 4333 | return new_type; |
4490cae6 RG |
4334 | } |
4335 | ||
fb291a1e RG |
4336 | /* If not, insert it to the cache and the hash. */ |
4337 | leader->type = t; | |
4338 | leader->leader = t; | |
4339 | *slot = (void *) t; | |
4490cae6 RG |
4340 | return t; |
4341 | } | |
4342 | ||
93b2a207 RG |
4343 | /* Register type T in the global type table gimple_types. |
4344 | If another type T', compatible with T, already existed in | |
4345 | gimple_types then return T', otherwise return T. This is used by | |
4346 | LTO to merge identical types read from different TUs. */ | |
4347 | ||
4348 | tree | |
4349 | gimple_register_type (tree t) | |
4350 | { | |
4351 | gcc_assert (TYPE_P (t)); | |
4352 | ||
4353 | if (!gimple_type_leader) | |
4354 | gimple_type_leader = ggc_alloc_cleared_vec_gimple_type_leader_entry_s | |
4355 | (GIMPLE_TYPE_LEADER_SIZE); | |
4356 | ||
4357 | if (gimple_types == NULL) | |
4358 | gimple_types = htab_create_ggc (16381, gimple_type_hash, gimple_type_eq, 0); | |
4359 | ||
4360 | return gimple_register_type_1 (t, false); | |
4361 | } | |
4490cae6 | 4362 | |
825b27de RG |
4363 | /* The TYPE_CANONICAL merging machinery. It should closely resemble |
4364 | the middle-end types_compatible_p function. It needs to avoid | |
4365 | claiming types are different for types that should be treated | |
4366 | the same with respect to TBAA. Canonical types are also used | |
4367 | for IL consistency checks via the useless_type_conversion_p | |
4368 | predicate which does not handle all type kinds itself but falls | |
4369 | back to pointer-comparison of TYPE_CANONICAL for aggregates | |
4370 | for example. */ | |
4371 | ||
4372 | /* Return true iff T1 and T2 are structurally identical for what | |
4373 | TBAA is concerned. */ | |
4374 | ||
4375 | static bool | |
4376 | gimple_canonical_types_compatible_p (tree t1, tree t2) | |
4377 | { | |
825b27de RG |
4378 | /* Before starting to set up the SCC machinery handle simple cases. */ |
4379 | ||
4380 | /* Check first for the obvious case of pointer identity. */ | |
4381 | if (t1 == t2) | |
4382 | return true; | |
4383 | ||
4384 | /* Check that we have two types to compare. */ | |
4385 | if (t1 == NULL_TREE || t2 == NULL_TREE) | |
4386 | return false; | |
4387 | ||
4388 | /* If the types have been previously registered and found equal | |
4389 | they still are. */ | |
4390 | if (TYPE_CANONICAL (t1) | |
4391 | && TYPE_CANONICAL (t1) == TYPE_CANONICAL (t2)) | |
4392 | return true; | |
4393 | ||
4394 | /* Can't be the same type if the types don't have the same code. */ | |
4395 | if (TREE_CODE (t1) != TREE_CODE (t2)) | |
4396 | return false; | |
4397 | ||
61332f77 | 4398 | if (TREE_ADDRESSABLE (t1) != TREE_ADDRESSABLE (t2)) |
825b27de RG |
4399 | return false; |
4400 | ||
61332f77 RG |
4401 | /* Qualifiers do not matter for canonical type comparison purposes. */ |
4402 | ||
4403 | /* Void types and nullptr types are always the same. */ | |
4404 | if (TREE_CODE (t1) == VOID_TYPE | |
4405 | || TREE_CODE (t1) == NULLPTR_TYPE) | |
825b27de RG |
4406 | return true; |
4407 | ||
61332f77 RG |
4408 | /* Can't be the same type if they have different alignment, or mode. */ |
4409 | if (TYPE_ALIGN (t1) != TYPE_ALIGN (t2) | |
4410 | || TYPE_MODE (t1) != TYPE_MODE (t2)) | |
4411 | return false; | |
4412 | ||
4413 | /* Non-aggregate types can be handled cheaply. */ | |
825b27de RG |
4414 | if (INTEGRAL_TYPE_P (t1) |
4415 | || SCALAR_FLOAT_TYPE_P (t1) | |
4416 | || FIXED_POINT_TYPE_P (t1) | |
4417 | || TREE_CODE (t1) == VECTOR_TYPE | |
4418 | || TREE_CODE (t1) == COMPLEX_TYPE | |
61332f77 RG |
4419 | || TREE_CODE (t1) == OFFSET_TYPE |
4420 | || POINTER_TYPE_P (t1)) | |
825b27de | 4421 | { |
61332f77 RG |
4422 | /* Can't be the same type if they have different sign or precision. */ |
4423 | if (TYPE_PRECISION (t1) != TYPE_PRECISION (t2) | |
825b27de RG |
4424 | || TYPE_UNSIGNED (t1) != TYPE_UNSIGNED (t2)) |
4425 | return false; | |
4426 | ||
4427 | if (TREE_CODE (t1) == INTEGER_TYPE | |
4428 | && (TYPE_IS_SIZETYPE (t1) != TYPE_IS_SIZETYPE (t2) | |
4429 | || TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2))) | |
4430 | return false; | |
4431 | ||
61332f77 RG |
4432 | /* For canonical type comparisons we do not want to build SCCs |
4433 | so we cannot compare pointed-to types. But we can, for now, | |
4434 | require the same pointed-to type kind and match what | |
4435 | useless_type_conversion_p would do. */ | |
4436 | if (POINTER_TYPE_P (t1)) | |
4437 | { | |
4438 | /* If the two pointers have different ref-all attributes, | |
4439 | they can't be the same type. */ | |
4440 | if (TYPE_REF_CAN_ALIAS_ALL (t1) != TYPE_REF_CAN_ALIAS_ALL (t2)) | |
4441 | return false; | |
825b27de | 4442 | |
61332f77 RG |
4443 | if (TYPE_ADDR_SPACE (TREE_TYPE (t1)) |
4444 | != TYPE_ADDR_SPACE (TREE_TYPE (t2))) | |
4445 | return false; | |
825b27de | 4446 | |
61332f77 RG |
4447 | if (TYPE_RESTRICT (t1) != TYPE_RESTRICT (t2)) |
4448 | return false; | |
4449 | ||
4450 | if (TREE_CODE (TREE_TYPE (t1)) != TREE_CODE (TREE_TYPE (t2))) | |
4451 | return false; | |
4452 | } | |
4453 | ||
4454 | /* Tail-recurse to components. */ | |
4455 | if (TREE_CODE (t1) == VECTOR_TYPE | |
4456 | || TREE_CODE (t1) == COMPLEX_TYPE) | |
4457 | return gimple_canonical_types_compatible_p (TREE_TYPE (t1), | |
4458 | TREE_TYPE (t2)); | |
4459 | ||
4460 | return true; | |
825b27de RG |
4461 | } |
4462 | ||
825b27de RG |
4463 | /* If their attributes are not the same they can't be the same type. */ |
4464 | if (!attribute_list_equal (TYPE_ATTRIBUTES (t1), TYPE_ATTRIBUTES (t2))) | |
b8a71aed | 4465 | return false; |
825b27de RG |
4466 | |
4467 | /* Do type-specific comparisons. */ | |
4468 | switch (TREE_CODE (t1)) | |
4469 | { | |
825b27de RG |
4470 | case ARRAY_TYPE: |
4471 | /* Array types are the same if the element types are the same and | |
4472 | the number of elements are the same. */ | |
4473 | if (!gimple_canonical_types_compatible_p (TREE_TYPE (t1), TREE_TYPE (t2)) | |
4474 | || TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2) | |
4475 | || TYPE_NONALIASED_COMPONENT (t1) != TYPE_NONALIASED_COMPONENT (t2)) | |
b8a71aed | 4476 | return false; |
825b27de RG |
4477 | else |
4478 | { | |
4479 | tree i1 = TYPE_DOMAIN (t1); | |
4480 | tree i2 = TYPE_DOMAIN (t2); | |
4481 | ||
4482 | /* For an incomplete external array, the type domain can be | |
4483 | NULL_TREE. Check this condition also. */ | |
4484 | if (i1 == NULL_TREE && i2 == NULL_TREE) | |
b8a71aed | 4485 | return true; |
825b27de | 4486 | else if (i1 == NULL_TREE || i2 == NULL_TREE) |
b8a71aed | 4487 | return false; |
825b27de RG |
4488 | /* If for a complete array type the possibly gimplified sizes |
4489 | are different the types are different. */ | |
4490 | else if (((TYPE_SIZE (i1) != NULL) ^ (TYPE_SIZE (i2) != NULL)) | |
4491 | || (TYPE_SIZE (i1) | |
4492 | && TYPE_SIZE (i2) | |
4493 | && !operand_equal_p (TYPE_SIZE (i1), TYPE_SIZE (i2), 0))) | |
b8a71aed | 4494 | return false; |
825b27de RG |
4495 | else |
4496 | { | |
4497 | tree min1 = TYPE_MIN_VALUE (i1); | |
4498 | tree min2 = TYPE_MIN_VALUE (i2); | |
4499 | tree max1 = TYPE_MAX_VALUE (i1); | |
4500 | tree max2 = TYPE_MAX_VALUE (i2); | |
4501 | ||
4502 | /* The minimum/maximum values have to be the same. */ | |
4503 | if ((min1 == min2 | |
4504 | || (min1 && min2 | |
4505 | && ((TREE_CODE (min1) == PLACEHOLDER_EXPR | |
4506 | && TREE_CODE (min2) == PLACEHOLDER_EXPR) | |
4507 | || operand_equal_p (min1, min2, 0)))) | |
4508 | && (max1 == max2 | |
4509 | || (max1 && max2 | |
4510 | && ((TREE_CODE (max1) == PLACEHOLDER_EXPR | |
4511 | && TREE_CODE (max2) == PLACEHOLDER_EXPR) | |
4512 | || operand_equal_p (max1, max2, 0))))) | |
b8a71aed | 4513 | return true; |
825b27de | 4514 | else |
b8a71aed | 4515 | return false; |
825b27de RG |
4516 | } |
4517 | } | |
4518 | ||
4519 | case METHOD_TYPE: | |
4520 | /* Method types should belong to the same class. */ | |
4521 | if (!gimple_canonical_types_compatible_p | |
4522 | (TYPE_METHOD_BASETYPE (t1), TYPE_METHOD_BASETYPE (t2))) | |
b8a71aed | 4523 | return false; |
825b27de RG |
4524 | |
4525 | /* Fallthru */ | |
4526 | ||
4527 | case FUNCTION_TYPE: | |
4528 | /* Function types are the same if the return type and arguments types | |
4529 | are the same. */ | |
6a20ce76 | 4530 | if (!gimple_canonical_types_compatible_p (TREE_TYPE (t1), TREE_TYPE (t2))) |
b8a71aed | 4531 | return false; |
825b27de RG |
4532 | |
4533 | if (!comp_type_attributes (t1, t2)) | |
b8a71aed | 4534 | return false; |
825b27de RG |
4535 | |
4536 | if (TYPE_ARG_TYPES (t1) == TYPE_ARG_TYPES (t2)) | |
b8a71aed | 4537 | return true; |
825b27de RG |
4538 | else |
4539 | { | |
4540 | tree parms1, parms2; | |
4541 | ||
4542 | for (parms1 = TYPE_ARG_TYPES (t1), parms2 = TYPE_ARG_TYPES (t2); | |
4543 | parms1 && parms2; | |
4544 | parms1 = TREE_CHAIN (parms1), parms2 = TREE_CHAIN (parms2)) | |
4545 | { | |
6a20ce76 RG |
4546 | if (!gimple_canonical_types_compatible_p |
4547 | (TREE_VALUE (parms1), TREE_VALUE (parms2))) | |
b8a71aed | 4548 | return false; |
825b27de RG |
4549 | } |
4550 | ||
4551 | if (parms1 || parms2) | |
b8a71aed | 4552 | return false; |
825b27de | 4553 | |
b8a71aed | 4554 | return true; |
825b27de RG |
4555 | } |
4556 | ||
825b27de RG |
4557 | case RECORD_TYPE: |
4558 | case UNION_TYPE: | |
4559 | case QUAL_UNION_TYPE: | |
4560 | { | |
4561 | tree f1, f2; | |
4562 | ||
4563 | /* For aggregate types, all the fields must be the same. */ | |
4564 | for (f1 = TYPE_FIELDS (t1), f2 = TYPE_FIELDS (t2); | |
4acd1c84 | 4565 | f1 || f2; |
825b27de RG |
4566 | f1 = TREE_CHAIN (f1), f2 = TREE_CHAIN (f2)) |
4567 | { | |
e7cfe241 RG |
4568 | /* Skip non-fields. */ |
4569 | while (f1 && TREE_CODE (f1) != FIELD_DECL) | |
4570 | f1 = TREE_CHAIN (f1); | |
4571 | while (f2 && TREE_CODE (f2) != FIELD_DECL) | |
4572 | f2 = TREE_CHAIN (f2); | |
4573 | if (!f1 || !f2) | |
4574 | break; | |
825b27de RG |
4575 | /* The fields must have the same name, offset and type. */ |
4576 | if (DECL_NONADDRESSABLE_P (f1) != DECL_NONADDRESSABLE_P (f2) | |
4577 | || !gimple_compare_field_offset (f1, f2) | |
4578 | || !gimple_canonical_types_compatible_p | |
4579 | (TREE_TYPE (f1), TREE_TYPE (f2))) | |
b8a71aed | 4580 | return false; |
825b27de RG |
4581 | } |
4582 | ||
4583 | /* If one aggregate has more fields than the other, they | |
4584 | are not the same. */ | |
4585 | if (f1 || f2) | |
b8a71aed | 4586 | return false; |
825b27de | 4587 | |
b8a71aed | 4588 | return true; |
825b27de RG |
4589 | } |
4590 | ||
4591 | default: | |
4592 | gcc_unreachable (); | |
4593 | } | |
825b27de RG |
4594 | } |
4595 | ||
4596 | ||
4490cae6 RG |
4597 | /* Returns nonzero if P1 and P2 are equal. */ |
4598 | ||
4599 | static int | |
4600 | gimple_canonical_type_eq (const void *p1, const void *p2) | |
4601 | { | |
4602 | const_tree t1 = (const_tree) p1; | |
4603 | const_tree t2 = (const_tree) p2; | |
825b27de RG |
4604 | return gimple_canonical_types_compatible_p (CONST_CAST_TREE (t1), |
4605 | CONST_CAST_TREE (t2)); | |
4490cae6 RG |
4606 | } |
4607 | ||
4608 | /* Register type T in the global type table gimple_types. | |
4609 | If another type T', compatible with T, already existed in | |
4610 | gimple_types then return T', otherwise return T. This is used by | |
96d91dcf RG |
4611 | LTO to merge identical types read from different TUs. |
4612 | ||
4613 | ??? This merging does not exactly match how the tree.c middle-end | |
4614 | functions will assign TYPE_CANONICAL when new types are created | |
4615 | during optimization (which at least happens for pointer and array | |
4616 | types). */ | |
4490cae6 RG |
4617 | |
4618 | tree | |
4619 | gimple_register_canonical_type (tree t) | |
4620 | { | |
4621 | void **slot; | |
4622 | ||
4623 | gcc_assert (TYPE_P (t)); | |
4624 | ||
61332f77 RG |
4625 | if (TYPE_CANONICAL (t)) |
4626 | return TYPE_CANONICAL (t); | |
4627 | ||
4490cae6 | 4628 | if (gimple_canonical_types == NULL) |
a844a60b | 4629 | gimple_canonical_types = htab_create_ggc (16381, gimple_canonical_type_hash, |
4490cae6 RG |
4630 | gimple_canonical_type_eq, 0); |
4631 | ||
4632 | slot = htab_find_slot (gimple_canonical_types, t, INSERT); | |
4633 | if (*slot | |
4634 | && *(tree *)slot != t) | |
4635 | { | |
4636 | tree new_type = (tree) *((tree *) slot); | |
4637 | ||
4638 | TYPE_CANONICAL (t) = new_type; | |
4639 | t = new_type; | |
4640 | } | |
4641 | else | |
4642 | { | |
4643 | TYPE_CANONICAL (t) = t; | |
4a2ac96f RG |
4644 | *slot = (void *) t; |
4645 | } | |
d7f09764 DN |
4646 | |
4647 | return t; | |
4648 | } | |
4649 | ||
4650 | ||
4651 | /* Show statistics on references to the global type table gimple_types. */ | |
4652 | ||
4653 | void | |
4654 | print_gimple_types_stats (void) | |
4655 | { | |
4656 | if (gimple_types) | |
4657 | fprintf (stderr, "GIMPLE type table: size %ld, %ld elements, " | |
4658 | "%ld searches, %ld collisions (ratio: %f)\n", | |
4659 | (long) htab_size (gimple_types), | |
4660 | (long) htab_elements (gimple_types), | |
4661 | (long) gimple_types->searches, | |
4662 | (long) gimple_types->collisions, | |
4663 | htab_collisions (gimple_types)); | |
4664 | else | |
4665 | fprintf (stderr, "GIMPLE type table is empty\n"); | |
a844a60b RG |
4666 | if (type_hash_cache) |
4667 | fprintf (stderr, "GIMPLE type hash table: size %ld, %ld elements, " | |
4668 | "%ld searches, %ld collisions (ratio: %f)\n", | |
4669 | (long) htab_size (type_hash_cache), | |
4670 | (long) htab_elements (type_hash_cache), | |
4671 | (long) type_hash_cache->searches, | |
4672 | (long) type_hash_cache->collisions, | |
4673 | htab_collisions (type_hash_cache)); | |
4674 | else | |
4675 | fprintf (stderr, "GIMPLE type hash table is empty\n"); | |
4490cae6 RG |
4676 | if (gimple_canonical_types) |
4677 | fprintf (stderr, "GIMPLE canonical type table: size %ld, %ld elements, " | |
4678 | "%ld searches, %ld collisions (ratio: %f)\n", | |
4679 | (long) htab_size (gimple_canonical_types), | |
4680 | (long) htab_elements (gimple_canonical_types), | |
4681 | (long) gimple_canonical_types->searches, | |
4682 | (long) gimple_canonical_types->collisions, | |
4683 | htab_collisions (gimple_canonical_types)); | |
4684 | else | |
4685 | fprintf (stderr, "GIMPLE canonical type table is empty\n"); | |
a844a60b RG |
4686 | if (canonical_type_hash_cache) |
4687 | fprintf (stderr, "GIMPLE canonical type hash table: size %ld, %ld elements, " | |
0f443ad0 | 4688 | "%ld searches, %ld collisions (ratio: %f)\n", |
a844a60b RG |
4689 | (long) htab_size (canonical_type_hash_cache), |
4690 | (long) htab_elements (canonical_type_hash_cache), | |
4691 | (long) canonical_type_hash_cache->searches, | |
4692 | (long) canonical_type_hash_cache->collisions, | |
4693 | htab_collisions (canonical_type_hash_cache)); | |
0f443ad0 | 4694 | else |
a844a60b | 4695 | fprintf (stderr, "GIMPLE canonical type hash table is empty\n"); |
d7f09764 DN |
4696 | } |
4697 | ||
0d0bfe17 RG |
4698 | /* Free the gimple type hashtables used for LTO type merging. */ |
4699 | ||
4700 | void | |
4701 | free_gimple_type_tables (void) | |
4702 | { | |
4703 | /* Last chance to print stats for the tables. */ | |
4704 | if (flag_lto_report) | |
4705 | print_gimple_types_stats (); | |
4706 | ||
4707 | if (gimple_types) | |
4708 | { | |
4709 | htab_delete (gimple_types); | |
4710 | gimple_types = NULL; | |
4711 | } | |
4490cae6 RG |
4712 | if (gimple_canonical_types) |
4713 | { | |
4714 | htab_delete (gimple_canonical_types); | |
4715 | gimple_canonical_types = NULL; | |
4716 | } | |
0d0bfe17 RG |
4717 | if (type_hash_cache) |
4718 | { | |
0f443ad0 | 4719 | htab_delete (type_hash_cache); |
0d0bfe17 RG |
4720 | type_hash_cache = NULL; |
4721 | } | |
a844a60b RG |
4722 | if (canonical_type_hash_cache) |
4723 | { | |
4724 | htab_delete (canonical_type_hash_cache); | |
4725 | canonical_type_hash_cache = NULL; | |
4726 | } | |
a30726a4 | 4727 | if (type_pair_cache) |
0d0bfe17 | 4728 | { |
a30726a4 JH |
4729 | free (type_pair_cache); |
4730 | type_pair_cache = NULL; | |
0d0bfe17 | 4731 | } |
4490cae6 | 4732 | gimple_type_leader = NULL; |
0d0bfe17 RG |
4733 | } |
4734 | ||
d7f09764 DN |
4735 | |
4736 | /* Return a type the same as TYPE except unsigned or | |
4737 | signed according to UNSIGNEDP. */ | |
4738 | ||
4739 | static tree | |
4740 | gimple_signed_or_unsigned_type (bool unsignedp, tree type) | |
4741 | { | |
4742 | tree type1; | |
4743 | ||
4744 | type1 = TYPE_MAIN_VARIANT (type); | |
4745 | if (type1 == signed_char_type_node | |
4746 | || type1 == char_type_node | |
4747 | || type1 == unsigned_char_type_node) | |
4748 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
4749 | if (type1 == integer_type_node || type1 == unsigned_type_node) | |
4750 | return unsignedp ? unsigned_type_node : integer_type_node; | |
4751 | if (type1 == short_integer_type_node || type1 == short_unsigned_type_node) | |
4752 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
4753 | if (type1 == long_integer_type_node || type1 == long_unsigned_type_node) | |
4754 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
4755 | if (type1 == long_long_integer_type_node | |
4756 | || type1 == long_long_unsigned_type_node) | |
4757 | return unsignedp | |
4758 | ? long_long_unsigned_type_node | |
4759 | : long_long_integer_type_node; | |
a6766312 KT |
4760 | if (int128_integer_type_node && (type1 == int128_integer_type_node || type1 == int128_unsigned_type_node)) |
4761 | return unsignedp | |
4762 | ? int128_unsigned_type_node | |
4763 | : int128_integer_type_node; | |
d7f09764 DN |
4764 | #if HOST_BITS_PER_WIDE_INT >= 64 |
4765 | if (type1 == intTI_type_node || type1 == unsigned_intTI_type_node) | |
4766 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
4767 | #endif | |
4768 | if (type1 == intDI_type_node || type1 == unsigned_intDI_type_node) | |
4769 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
4770 | if (type1 == intSI_type_node || type1 == unsigned_intSI_type_node) | |
4771 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
4772 | if (type1 == intHI_type_node || type1 == unsigned_intHI_type_node) | |
4773 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
4774 | if (type1 == intQI_type_node || type1 == unsigned_intQI_type_node) | |
4775 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
4776 | ||
4777 | #define GIMPLE_FIXED_TYPES(NAME) \ | |
4778 | if (type1 == short_ ## NAME ## _type_node \ | |
4779 | || type1 == unsigned_short_ ## NAME ## _type_node) \ | |
4780 | return unsignedp ? unsigned_short_ ## NAME ## _type_node \ | |
4781 | : short_ ## NAME ## _type_node; \ | |
4782 | if (type1 == NAME ## _type_node \ | |
4783 | || type1 == unsigned_ ## NAME ## _type_node) \ | |
4784 | return unsignedp ? unsigned_ ## NAME ## _type_node \ | |
4785 | : NAME ## _type_node; \ | |
4786 | if (type1 == long_ ## NAME ## _type_node \ | |
4787 | || type1 == unsigned_long_ ## NAME ## _type_node) \ | |
4788 | return unsignedp ? unsigned_long_ ## NAME ## _type_node \ | |
4789 | : long_ ## NAME ## _type_node; \ | |
4790 | if (type1 == long_long_ ## NAME ## _type_node \ | |
4791 | || type1 == unsigned_long_long_ ## NAME ## _type_node) \ | |
4792 | return unsignedp ? unsigned_long_long_ ## NAME ## _type_node \ | |
4793 | : long_long_ ## NAME ## _type_node; | |
4794 | ||
4795 | #define GIMPLE_FIXED_MODE_TYPES(NAME) \ | |
4796 | if (type1 == NAME ## _type_node \ | |
4797 | || type1 == u ## NAME ## _type_node) \ | |
4798 | return unsignedp ? u ## NAME ## _type_node \ | |
4799 | : NAME ## _type_node; | |
4800 | ||
4801 | #define GIMPLE_FIXED_TYPES_SAT(NAME) \ | |
4802 | if (type1 == sat_ ## short_ ## NAME ## _type_node \ | |
4803 | || type1 == sat_ ## unsigned_short_ ## NAME ## _type_node) \ | |
4804 | return unsignedp ? sat_ ## unsigned_short_ ## NAME ## _type_node \ | |
4805 | : sat_ ## short_ ## NAME ## _type_node; \ | |
4806 | if (type1 == sat_ ## NAME ## _type_node \ | |
4807 | || type1 == sat_ ## unsigned_ ## NAME ## _type_node) \ | |
4808 | return unsignedp ? sat_ ## unsigned_ ## NAME ## _type_node \ | |
4809 | : sat_ ## NAME ## _type_node; \ | |
4810 | if (type1 == sat_ ## long_ ## NAME ## _type_node \ | |
4811 | || type1 == sat_ ## unsigned_long_ ## NAME ## _type_node) \ | |
4812 | return unsignedp ? sat_ ## unsigned_long_ ## NAME ## _type_node \ | |
4813 | : sat_ ## long_ ## NAME ## _type_node; \ | |
4814 | if (type1 == sat_ ## long_long_ ## NAME ## _type_node \ | |
4815 | || type1 == sat_ ## unsigned_long_long_ ## NAME ## _type_node) \ | |
4816 | return unsignedp ? sat_ ## unsigned_long_long_ ## NAME ## _type_node \ | |
4817 | : sat_ ## long_long_ ## NAME ## _type_node; | |
4818 | ||
4819 | #define GIMPLE_FIXED_MODE_TYPES_SAT(NAME) \ | |
4820 | if (type1 == sat_ ## NAME ## _type_node \ | |
4821 | || type1 == sat_ ## u ## NAME ## _type_node) \ | |
4822 | return unsignedp ? sat_ ## u ## NAME ## _type_node \ | |
4823 | : sat_ ## NAME ## _type_node; | |
4824 | ||
4825 | GIMPLE_FIXED_TYPES (fract); | |
4826 | GIMPLE_FIXED_TYPES_SAT (fract); | |
4827 | GIMPLE_FIXED_TYPES (accum); | |
4828 | GIMPLE_FIXED_TYPES_SAT (accum); | |
4829 | ||
4830 | GIMPLE_FIXED_MODE_TYPES (qq); | |
4831 | GIMPLE_FIXED_MODE_TYPES (hq); | |
4832 | GIMPLE_FIXED_MODE_TYPES (sq); | |
4833 | GIMPLE_FIXED_MODE_TYPES (dq); | |
4834 | GIMPLE_FIXED_MODE_TYPES (tq); | |
4835 | GIMPLE_FIXED_MODE_TYPES_SAT (qq); | |
4836 | GIMPLE_FIXED_MODE_TYPES_SAT (hq); | |
4837 | GIMPLE_FIXED_MODE_TYPES_SAT (sq); | |
4838 | GIMPLE_FIXED_MODE_TYPES_SAT (dq); | |
4839 | GIMPLE_FIXED_MODE_TYPES_SAT (tq); | |
4840 | GIMPLE_FIXED_MODE_TYPES (ha); | |
4841 | GIMPLE_FIXED_MODE_TYPES (sa); | |
4842 | GIMPLE_FIXED_MODE_TYPES (da); | |
4843 | GIMPLE_FIXED_MODE_TYPES (ta); | |
4844 | GIMPLE_FIXED_MODE_TYPES_SAT (ha); | |
4845 | GIMPLE_FIXED_MODE_TYPES_SAT (sa); | |
4846 | GIMPLE_FIXED_MODE_TYPES_SAT (da); | |
4847 | GIMPLE_FIXED_MODE_TYPES_SAT (ta); | |
4848 | ||
4849 | /* For ENUMERAL_TYPEs in C++, must check the mode of the types, not | |
4850 | the precision; they have precision set to match their range, but | |
4851 | may use a wider mode to match an ABI. If we change modes, we may | |
4852 | wind up with bad conversions. For INTEGER_TYPEs in C, must check | |
4853 | the precision as well, so as to yield correct results for | |
4854 | bit-field types. C++ does not have these separate bit-field | |
4855 | types, and producing a signed or unsigned variant of an | |
4856 | ENUMERAL_TYPE may cause other problems as well. */ | |
4857 | if (!INTEGRAL_TYPE_P (type) | |
4858 | || TYPE_UNSIGNED (type) == unsignedp) | |
4859 | return type; | |
4860 | ||
4861 | #define TYPE_OK(node) \ | |
4862 | (TYPE_MODE (type) == TYPE_MODE (node) \ | |
4863 | && TYPE_PRECISION (type) == TYPE_PRECISION (node)) | |
4864 | if (TYPE_OK (signed_char_type_node)) | |
4865 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
4866 | if (TYPE_OK (integer_type_node)) | |
4867 | return unsignedp ? unsigned_type_node : integer_type_node; | |
4868 | if (TYPE_OK (short_integer_type_node)) | |
4869 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
4870 | if (TYPE_OK (long_integer_type_node)) | |
4871 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
4872 | if (TYPE_OK (long_long_integer_type_node)) | |
4873 | return (unsignedp | |
4874 | ? long_long_unsigned_type_node | |
4875 | : long_long_integer_type_node); | |
a6766312 KT |
4876 | if (int128_integer_type_node && TYPE_OK (int128_integer_type_node)) |
4877 | return (unsignedp | |
4878 | ? int128_unsigned_type_node | |
4879 | : int128_integer_type_node); | |
d7f09764 DN |
4880 | |
4881 | #if HOST_BITS_PER_WIDE_INT >= 64 | |
4882 | if (TYPE_OK (intTI_type_node)) | |
4883 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
4884 | #endif | |
4885 | if (TYPE_OK (intDI_type_node)) | |
4886 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
4887 | if (TYPE_OK (intSI_type_node)) | |
4888 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
4889 | if (TYPE_OK (intHI_type_node)) | |
4890 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
4891 | if (TYPE_OK (intQI_type_node)) | |
4892 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
4893 | ||
4894 | #undef GIMPLE_FIXED_TYPES | |
4895 | #undef GIMPLE_FIXED_MODE_TYPES | |
4896 | #undef GIMPLE_FIXED_TYPES_SAT | |
4897 | #undef GIMPLE_FIXED_MODE_TYPES_SAT | |
4898 | #undef TYPE_OK | |
4899 | ||
4900 | return build_nonstandard_integer_type (TYPE_PRECISION (type), unsignedp); | |
4901 | } | |
4902 | ||
4903 | ||
4904 | /* Return an unsigned type the same as TYPE in other respects. */ | |
4905 | ||
4906 | tree | |
4907 | gimple_unsigned_type (tree type) | |
4908 | { | |
4909 | return gimple_signed_or_unsigned_type (true, type); | |
4910 | } | |
4911 | ||
4912 | ||
4913 | /* Return a signed type the same as TYPE in other respects. */ | |
4914 | ||
4915 | tree | |
4916 | gimple_signed_type (tree type) | |
4917 | { | |
4918 | return gimple_signed_or_unsigned_type (false, type); | |
4919 | } | |
4920 | ||
4921 | ||
4922 | /* Return the typed-based alias set for T, which may be an expression | |
4923 | or a type. Return -1 if we don't do anything special. */ | |
4924 | ||
4925 | alias_set_type | |
4926 | gimple_get_alias_set (tree t) | |
4927 | { | |
4928 | tree u; | |
4929 | ||
4930 | /* Permit type-punning when accessing a union, provided the access | |
4931 | is directly through the union. For example, this code does not | |
4932 | permit taking the address of a union member and then storing | |
4933 | through it. Even the type-punning allowed here is a GCC | |
4934 | extension, albeit a common and useful one; the C standard says | |
4935 | that such accesses have implementation-defined behavior. */ | |
4936 | for (u = t; | |
4937 | TREE_CODE (u) == COMPONENT_REF || TREE_CODE (u) == ARRAY_REF; | |
4938 | u = TREE_OPERAND (u, 0)) | |
4939 | if (TREE_CODE (u) == COMPONENT_REF | |
4940 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (u, 0))) == UNION_TYPE) | |
4941 | return 0; | |
4942 | ||
4943 | /* That's all the expressions we handle specially. */ | |
4944 | if (!TYPE_P (t)) | |
4945 | return -1; | |
4946 | ||
4947 | /* For convenience, follow the C standard when dealing with | |
4948 | character types. Any object may be accessed via an lvalue that | |
4949 | has character type. */ | |
4950 | if (t == char_type_node | |
4951 | || t == signed_char_type_node | |
4952 | || t == unsigned_char_type_node) | |
4953 | return 0; | |
4954 | ||
4955 | /* Allow aliasing between signed and unsigned variants of the same | |
4956 | type. We treat the signed variant as canonical. */ | |
4957 | if (TREE_CODE (t) == INTEGER_TYPE && TYPE_UNSIGNED (t)) | |
4958 | { | |
4959 | tree t1 = gimple_signed_type (t); | |
4960 | ||
4961 | /* t1 == t can happen for boolean nodes which are always unsigned. */ | |
4962 | if (t1 != t) | |
4963 | return get_alias_set (t1); | |
4964 | } | |
d7f09764 DN |
4965 | |
4966 | return -1; | |
4967 | } | |
4968 | ||
4969 | ||
5006671f RG |
4970 | /* Data structure used to count the number of dereferences to PTR |
4971 | inside an expression. */ | |
4972 | struct count_ptr_d | |
4973 | { | |
4974 | tree ptr; | |
4975 | unsigned num_stores; | |
4976 | unsigned num_loads; | |
4977 | }; | |
4978 | ||
4979 | /* Helper for count_uses_and_derefs. Called by walk_tree to look for | |
4980 | (ALIGN/MISALIGNED_)INDIRECT_REF nodes for the pointer passed in DATA. */ | |
4981 | ||
4982 | static tree | |
4983 | count_ptr_derefs (tree *tp, int *walk_subtrees, void *data) | |
4984 | { | |
4985 | struct walk_stmt_info *wi_p = (struct walk_stmt_info *) data; | |
4986 | struct count_ptr_d *count_p = (struct count_ptr_d *) wi_p->info; | |
4987 | ||
4988 | /* Do not walk inside ADDR_EXPR nodes. In the expression &ptr->fld, | |
4989 | pointer 'ptr' is *not* dereferenced, it is simply used to compute | |
4990 | the address of 'fld' as 'ptr + offsetof(fld)'. */ | |
4991 | if (TREE_CODE (*tp) == ADDR_EXPR) | |
4992 | { | |
4993 | *walk_subtrees = 0; | |
4994 | return NULL_TREE; | |
4995 | } | |
4996 | ||
70f34814 | 4997 | if (TREE_CODE (*tp) == MEM_REF && TREE_OPERAND (*tp, 0) == count_p->ptr) |
5006671f RG |
4998 | { |
4999 | if (wi_p->is_lhs) | |
5000 | count_p->num_stores++; | |
5001 | else | |
5002 | count_p->num_loads++; | |
5003 | } | |
5004 | ||
5005 | return NULL_TREE; | |
5006 | } | |
5007 | ||
5008 | /* Count the number of direct and indirect uses for pointer PTR in | |
5009 | statement STMT. The number of direct uses is stored in | |
5010 | *NUM_USES_P. Indirect references are counted separately depending | |
5011 | on whether they are store or load operations. The counts are | |
5012 | stored in *NUM_STORES_P and *NUM_LOADS_P. */ | |
5013 | ||
5014 | void | |
5015 | count_uses_and_derefs (tree ptr, gimple stmt, unsigned *num_uses_p, | |
5016 | unsigned *num_loads_p, unsigned *num_stores_p) | |
5017 | { | |
5018 | ssa_op_iter i; | |
5019 | tree use; | |
5020 | ||
5021 | *num_uses_p = 0; | |
5022 | *num_loads_p = 0; | |
5023 | *num_stores_p = 0; | |
5024 | ||
5025 | /* Find out the total number of uses of PTR in STMT. */ | |
5026 | FOR_EACH_SSA_TREE_OPERAND (use, stmt, i, SSA_OP_USE) | |
5027 | if (use == ptr) | |
5028 | (*num_uses_p)++; | |
5029 | ||
5030 | /* Now count the number of indirect references to PTR. This is | |
5031 | truly awful, but we don't have much choice. There are no parent | |
5032 | pointers inside INDIRECT_REFs, so an expression like | |
5033 | '*x_1 = foo (x_1, *x_1)' needs to be traversed piece by piece to | |
5034 | find all the indirect and direct uses of x_1 inside. The only | |
5035 | shortcut we can take is the fact that GIMPLE only allows | |
5036 | INDIRECT_REFs inside the expressions below. */ | |
5037 | if (is_gimple_assign (stmt) | |
5038 | || gimple_code (stmt) == GIMPLE_RETURN | |
5039 | || gimple_code (stmt) == GIMPLE_ASM | |
5040 | || is_gimple_call (stmt)) | |
5041 | { | |
5042 | struct walk_stmt_info wi; | |
5043 | struct count_ptr_d count; | |
5044 | ||
5045 | count.ptr = ptr; | |
5046 | count.num_stores = 0; | |
5047 | count.num_loads = 0; | |
5048 | ||
5049 | memset (&wi, 0, sizeof (wi)); | |
5050 | wi.info = &count; | |
5051 | walk_gimple_op (stmt, count_ptr_derefs, &wi); | |
5052 | ||
5053 | *num_stores_p = count.num_stores; | |
5054 | *num_loads_p = count.num_loads; | |
5055 | } | |
5056 | ||
5057 | gcc_assert (*num_uses_p >= *num_loads_p + *num_stores_p); | |
5058 | } | |
5059 | ||
346ef3fa RG |
5060 | /* From a tree operand OP return the base of a load or store operation |
5061 | or NULL_TREE if OP is not a load or a store. */ | |
5062 | ||
5063 | static tree | |
5064 | get_base_loadstore (tree op) | |
5065 | { | |
5066 | while (handled_component_p (op)) | |
5067 | op = TREE_OPERAND (op, 0); | |
5068 | if (DECL_P (op) | |
5069 | || INDIRECT_REF_P (op) | |
70f34814 | 5070 | || TREE_CODE (op) == MEM_REF |
346ef3fa RG |
5071 | || TREE_CODE (op) == TARGET_MEM_REF) |
5072 | return op; | |
5073 | return NULL_TREE; | |
5074 | } | |
5075 | ||
5076 | /* For the statement STMT call the callbacks VISIT_LOAD, VISIT_STORE and | |
5077 | VISIT_ADDR if non-NULL on loads, store and address-taken operands | |
5078 | passing the STMT, the base of the operand and DATA to it. The base | |
5079 | will be either a decl, an indirect reference (including TARGET_MEM_REF) | |
5080 | or the argument of an address expression. | |
5081 | Returns the results of these callbacks or'ed. */ | |
5082 | ||
5083 | bool | |
5084 | walk_stmt_load_store_addr_ops (gimple stmt, void *data, | |
5085 | bool (*visit_load)(gimple, tree, void *), | |
5086 | bool (*visit_store)(gimple, tree, void *), | |
5087 | bool (*visit_addr)(gimple, tree, void *)) | |
5088 | { | |
5089 | bool ret = false; | |
5090 | unsigned i; | |
5091 | if (gimple_assign_single_p (stmt)) | |
5092 | { | |
5093 | tree lhs, rhs; | |
5094 | if (visit_store) | |
5095 | { | |
5096 | lhs = get_base_loadstore (gimple_assign_lhs (stmt)); | |
5097 | if (lhs) | |
5098 | ret |= visit_store (stmt, lhs, data); | |
5099 | } | |
5100 | rhs = gimple_assign_rhs1 (stmt); | |
ad8a1ac0 RG |
5101 | while (handled_component_p (rhs)) |
5102 | rhs = TREE_OPERAND (rhs, 0); | |
346ef3fa RG |
5103 | if (visit_addr) |
5104 | { | |
5105 | if (TREE_CODE (rhs) == ADDR_EXPR) | |
5106 | ret |= visit_addr (stmt, TREE_OPERAND (rhs, 0), data); | |
5107 | else if (TREE_CODE (rhs) == TARGET_MEM_REF | |
5108 | && TREE_CODE (TMR_BASE (rhs)) == ADDR_EXPR) | |
5109 | ret |= visit_addr (stmt, TREE_OPERAND (TMR_BASE (rhs), 0), data); | |
5110 | else if (TREE_CODE (rhs) == OBJ_TYPE_REF | |
5111 | && TREE_CODE (OBJ_TYPE_REF_OBJECT (rhs)) == ADDR_EXPR) | |
5112 | ret |= visit_addr (stmt, TREE_OPERAND (OBJ_TYPE_REF_OBJECT (rhs), | |
5113 | 0), data); | |
cb3d2e33 JJ |
5114 | else if (TREE_CODE (rhs) == CONSTRUCTOR) |
5115 | { | |
5116 | unsigned int ix; | |
5117 | tree val; | |
5118 | ||
5119 | FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (rhs), ix, val) | |
5120 | if (TREE_CODE (val) == ADDR_EXPR) | |
5121 | ret |= visit_addr (stmt, TREE_OPERAND (val, 0), data); | |
5122 | else if (TREE_CODE (val) == OBJ_TYPE_REF | |
5123 | && TREE_CODE (OBJ_TYPE_REF_OBJECT (val)) == ADDR_EXPR) | |
5124 | ret |= visit_addr (stmt, | |
5125 | TREE_OPERAND (OBJ_TYPE_REF_OBJECT (val), | |
5126 | 0), data); | |
5127 | } | |
fff1894c AB |
5128 | lhs = gimple_assign_lhs (stmt); |
5129 | if (TREE_CODE (lhs) == TARGET_MEM_REF | |
fff1894c AB |
5130 | && TREE_CODE (TMR_BASE (lhs)) == ADDR_EXPR) |
5131 | ret |= visit_addr (stmt, TREE_OPERAND (TMR_BASE (lhs), 0), data); | |
346ef3fa RG |
5132 | } |
5133 | if (visit_load) | |
5134 | { | |
5135 | rhs = get_base_loadstore (rhs); | |
5136 | if (rhs) | |
5137 | ret |= visit_load (stmt, rhs, data); | |
5138 | } | |
5139 | } | |
5140 | else if (visit_addr | |
5141 | && (is_gimple_assign (stmt) | |
4d7a65ea | 5142 | || gimple_code (stmt) == GIMPLE_COND)) |
346ef3fa RG |
5143 | { |
5144 | for (i = 0; i < gimple_num_ops (stmt); ++i) | |
9dd58aa4 JJ |
5145 | { |
5146 | tree op = gimple_op (stmt, i); | |
5147 | if (op == NULL_TREE) | |
5148 | ; | |
5149 | else if (TREE_CODE (op) == ADDR_EXPR) | |
5150 | ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data); | |
5151 | /* COND_EXPR and VCOND_EXPR rhs1 argument is a comparison | |
5152 | tree with two operands. */ | |
5153 | else if (i == 1 && COMPARISON_CLASS_P (op)) | |
5154 | { | |
5155 | if (TREE_CODE (TREE_OPERAND (op, 0)) == ADDR_EXPR) | |
5156 | ret |= visit_addr (stmt, TREE_OPERAND (TREE_OPERAND (op, 0), | |
5157 | 0), data); | |
5158 | if (TREE_CODE (TREE_OPERAND (op, 1)) == ADDR_EXPR) | |
5159 | ret |= visit_addr (stmt, TREE_OPERAND (TREE_OPERAND (op, 1), | |
5160 | 0), data); | |
5161 | } | |
5162 | } | |
346ef3fa RG |
5163 | } |
5164 | else if (is_gimple_call (stmt)) | |
5165 | { | |
5166 | if (visit_store) | |
5167 | { | |
5168 | tree lhs = gimple_call_lhs (stmt); | |
5169 | if (lhs) | |
5170 | { | |
5171 | lhs = get_base_loadstore (lhs); | |
5172 | if (lhs) | |
5173 | ret |= visit_store (stmt, lhs, data); | |
5174 | } | |
5175 | } | |
5176 | if (visit_load || visit_addr) | |
5177 | for (i = 0; i < gimple_call_num_args (stmt); ++i) | |
5178 | { | |
5179 | tree rhs = gimple_call_arg (stmt, i); | |
5180 | if (visit_addr | |
5181 | && TREE_CODE (rhs) == ADDR_EXPR) | |
5182 | ret |= visit_addr (stmt, TREE_OPERAND (rhs, 0), data); | |
5183 | else if (visit_load) | |
5184 | { | |
5185 | rhs = get_base_loadstore (rhs); | |
5186 | if (rhs) | |
5187 | ret |= visit_load (stmt, rhs, data); | |
5188 | } | |
5189 | } | |
5190 | if (visit_addr | |
5191 | && gimple_call_chain (stmt) | |
5192 | && TREE_CODE (gimple_call_chain (stmt)) == ADDR_EXPR) | |
5193 | ret |= visit_addr (stmt, TREE_OPERAND (gimple_call_chain (stmt), 0), | |
5194 | data); | |
1d24fdd9 RG |
5195 | if (visit_addr |
5196 | && gimple_call_return_slot_opt_p (stmt) | |
5197 | && gimple_call_lhs (stmt) != NULL_TREE | |
4d61856d | 5198 | && TREE_ADDRESSABLE (TREE_TYPE (gimple_call_lhs (stmt)))) |
1d24fdd9 | 5199 | ret |= visit_addr (stmt, gimple_call_lhs (stmt), data); |
346ef3fa RG |
5200 | } |
5201 | else if (gimple_code (stmt) == GIMPLE_ASM) | |
5202 | { | |
5203 | unsigned noutputs; | |
5204 | const char *constraint; | |
5205 | const char **oconstraints; | |
5206 | bool allows_mem, allows_reg, is_inout; | |
5207 | noutputs = gimple_asm_noutputs (stmt); | |
5208 | oconstraints = XALLOCAVEC (const char *, noutputs); | |
5209 | if (visit_store || visit_addr) | |
5210 | for (i = 0; i < gimple_asm_noutputs (stmt); ++i) | |
5211 | { | |
5212 | tree link = gimple_asm_output_op (stmt, i); | |
5213 | tree op = get_base_loadstore (TREE_VALUE (link)); | |
5214 | if (op && visit_store) | |
5215 | ret |= visit_store (stmt, op, data); | |
5216 | if (visit_addr) | |
5217 | { | |
5218 | constraint = TREE_STRING_POINTER | |
5219 | (TREE_VALUE (TREE_PURPOSE (link))); | |
5220 | oconstraints[i] = constraint; | |
5221 | parse_output_constraint (&constraint, i, 0, 0, &allows_mem, | |
5222 | &allows_reg, &is_inout); | |
5223 | if (op && !allows_reg && allows_mem) | |
5224 | ret |= visit_addr (stmt, op, data); | |
5225 | } | |
5226 | } | |
5227 | if (visit_load || visit_addr) | |
5228 | for (i = 0; i < gimple_asm_ninputs (stmt); ++i) | |
5229 | { | |
5230 | tree link = gimple_asm_input_op (stmt, i); | |
5231 | tree op = TREE_VALUE (link); | |
5232 | if (visit_addr | |
5233 | && TREE_CODE (op) == ADDR_EXPR) | |
5234 | ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data); | |
5235 | else if (visit_load || visit_addr) | |
5236 | { | |
5237 | op = get_base_loadstore (op); | |
5238 | if (op) | |
5239 | { | |
5240 | if (visit_load) | |
5241 | ret |= visit_load (stmt, op, data); | |
5242 | if (visit_addr) | |
5243 | { | |
5244 | constraint = TREE_STRING_POINTER | |
5245 | (TREE_VALUE (TREE_PURPOSE (link))); | |
5246 | parse_input_constraint (&constraint, 0, 0, noutputs, | |
5247 | 0, oconstraints, | |
5248 | &allows_mem, &allows_reg); | |
5249 | if (!allows_reg && allows_mem) | |
5250 | ret |= visit_addr (stmt, op, data); | |
5251 | } | |
5252 | } | |
5253 | } | |
5254 | } | |
5255 | } | |
5256 | else if (gimple_code (stmt) == GIMPLE_RETURN) | |
5257 | { | |
5258 | tree op = gimple_return_retval (stmt); | |
5259 | if (op) | |
5260 | { | |
5261 | if (visit_addr | |
5262 | && TREE_CODE (op) == ADDR_EXPR) | |
5263 | ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data); | |
5264 | else if (visit_load) | |
5265 | { | |
5266 | op = get_base_loadstore (op); | |
5267 | if (op) | |
5268 | ret |= visit_load (stmt, op, data); | |
5269 | } | |
5270 | } | |
5271 | } | |
5272 | else if (visit_addr | |
5273 | && gimple_code (stmt) == GIMPLE_PHI) | |
5274 | { | |
5275 | for (i = 0; i < gimple_phi_num_args (stmt); ++i) | |
5276 | { | |
5277 | tree op = PHI_ARG_DEF (stmt, i); | |
5278 | if (TREE_CODE (op) == ADDR_EXPR) | |
5279 | ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data); | |
5280 | } | |
5281 | } | |
5282 | ||
5283 | return ret; | |
5284 | } | |
5285 | ||
5286 | /* Like walk_stmt_load_store_addr_ops but with NULL visit_addr. IPA-CP | |
5287 | should make a faster clone for this case. */ | |
5288 | ||
5289 | bool | |
5290 | walk_stmt_load_store_ops (gimple stmt, void *data, | |
5291 | bool (*visit_load)(gimple, tree, void *), | |
5292 | bool (*visit_store)(gimple, tree, void *)) | |
5293 | { | |
5294 | return walk_stmt_load_store_addr_ops (stmt, data, | |
5295 | visit_load, visit_store, NULL); | |
5296 | } | |
5297 | ||
ccacdf06 RG |
5298 | /* Helper for gimple_ior_addresses_taken_1. */ |
5299 | ||
5300 | static bool | |
5301 | gimple_ior_addresses_taken_1 (gimple stmt ATTRIBUTE_UNUSED, | |
5302 | tree addr, void *data) | |
5303 | { | |
5304 | bitmap addresses_taken = (bitmap)data; | |
2ea9dc64 RG |
5305 | addr = get_base_address (addr); |
5306 | if (addr | |
5307 | && DECL_P (addr)) | |
ccacdf06 RG |
5308 | { |
5309 | bitmap_set_bit (addresses_taken, DECL_UID (addr)); | |
5310 | return true; | |
5311 | } | |
5312 | return false; | |
5313 | } | |
5314 | ||
5315 | /* Set the bit for the uid of all decls that have their address taken | |
5316 | in STMT in the ADDRESSES_TAKEN bitmap. Returns true if there | |
5317 | were any in this stmt. */ | |
5318 | ||
5319 | bool | |
5320 | gimple_ior_addresses_taken (bitmap addresses_taken, gimple stmt) | |
5321 | { | |
5322 | return walk_stmt_load_store_addr_ops (stmt, addresses_taken, NULL, NULL, | |
5323 | gimple_ior_addresses_taken_1); | |
5324 | } | |
5325 | ||
4537ec0c DN |
5326 | |
5327 | /* Return a printable name for symbol DECL. */ | |
5328 | ||
5329 | const char * | |
5330 | gimple_decl_printable_name (tree decl, int verbosity) | |
5331 | { | |
98b2dfbb RG |
5332 | if (!DECL_NAME (decl)) |
5333 | return NULL; | |
4537ec0c DN |
5334 | |
5335 | if (DECL_ASSEMBLER_NAME_SET_P (decl)) | |
5336 | { | |
5337 | const char *str, *mangled_str; | |
5338 | int dmgl_opts = DMGL_NO_OPTS; | |
5339 | ||
5340 | if (verbosity >= 2) | |
5341 | { | |
5342 | dmgl_opts = DMGL_VERBOSE | |
4537ec0c DN |
5343 | | DMGL_ANSI |
5344 | | DMGL_GNU_V3 | |
5345 | | DMGL_RET_POSTFIX; | |
5346 | if (TREE_CODE (decl) == FUNCTION_DECL) | |
5347 | dmgl_opts |= DMGL_PARAMS; | |
5348 | } | |
5349 | ||
5350 | mangled_str = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); | |
5351 | str = cplus_demangle_v3 (mangled_str, dmgl_opts); | |
5352 | return (str) ? str : mangled_str; | |
5353 | } | |
5354 | ||
5355 | return IDENTIFIER_POINTER (DECL_NAME (decl)); | |
5356 | } | |
5357 | ||
c54c785d JH |
5358 | /* Return true when STMT is builtins call to CODE. */ |
5359 | ||
5360 | bool | |
5361 | gimple_call_builtin_p (gimple stmt, enum built_in_function code) | |
5362 | { | |
5363 | tree fndecl; | |
5364 | return (is_gimple_call (stmt) | |
5365 | && (fndecl = gimple_call_fndecl (stmt)) != NULL | |
5366 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
5367 | && DECL_FUNCTION_CODE (fndecl) == code); | |
5368 | } | |
5369 | ||
edcdea5b NF |
5370 | /* Return true if STMT clobbers memory. STMT is required to be a |
5371 | GIMPLE_ASM. */ | |
5372 | ||
5373 | bool | |
5374 | gimple_asm_clobbers_memory_p (const_gimple stmt) | |
5375 | { | |
5376 | unsigned i; | |
5377 | ||
5378 | for (i = 0; i < gimple_asm_nclobbers (stmt); i++) | |
5379 | { | |
5380 | tree op = gimple_asm_clobber_op (stmt, i); | |
5381 | if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op)), "memory") == 0) | |
5382 | return true; | |
5383 | } | |
5384 | ||
5385 | return false; | |
5386 | } | |
726a989a | 5387 | #include "gt-gimple.h" |