]>
Commit | Line | Data |
---|---|---|
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", | |
93 | "sequences", | |
94 | "everything else" | |
95 | }; | |
96 | ||
97 | #endif /* GATHER_STATISTICS */ | |
98 | ||
99 | /* A cache of gimple_seq objects. Sequences are created and destroyed | |
100 | fairly often during gimplification. */ | |
101 | static GTY ((deletable)) struct gimple_seq_d *gimple_seq_cache; | |
102 | ||
103 | /* Private API manipulation functions shared only with some | |
104 | other files. */ | |
105 | extern void gimple_set_stored_syms (gimple, bitmap, bitmap_obstack *); | |
106 | extern void gimple_set_loaded_syms (gimple, bitmap, bitmap_obstack *); | |
107 | ||
108 | /* Gimple tuple constructors. | |
109 | Note: Any constructor taking a ``gimple_seq'' as a parameter, can | |
110 | be passed a NULL to start with an empty sequence. */ | |
111 | ||
112 | /* Set the code for statement G to CODE. */ | |
113 | ||
114 | static inline void | |
115 | gimple_set_code (gimple g, enum gimple_code code) | |
116 | { | |
117 | g->gsbase.code = code; | |
118 | } | |
119 | ||
726a989a RB |
120 | /* Return the number of bytes needed to hold a GIMPLE statement with |
121 | code CODE. */ | |
122 | ||
f2c4a81c | 123 | static inline size_t |
726a989a RB |
124 | gimple_size (enum gimple_code code) |
125 | { | |
f2c4a81c | 126 | return gsstruct_code_size[gss_for_code (code)]; |
726a989a RB |
127 | } |
128 | ||
726a989a RB |
129 | /* Allocate memory for a GIMPLE statement with code CODE and NUM_OPS |
130 | operands. */ | |
131 | ||
d7f09764 | 132 | gimple |
726a989a RB |
133 | gimple_alloc_stat (enum gimple_code code, unsigned num_ops MEM_STAT_DECL) |
134 | { | |
135 | size_t size; | |
136 | gimple stmt; | |
137 | ||
138 | size = gimple_size (code); | |
139 | if (num_ops > 0) | |
140 | size += sizeof (tree) * (num_ops - 1); | |
141 | ||
142 | #ifdef GATHER_STATISTICS | |
143 | { | |
144 | enum gimple_alloc_kind kind = gimple_alloc_kind (code); | |
145 | gimple_alloc_counts[(int) kind]++; | |
146 | gimple_alloc_sizes[(int) kind] += size; | |
147 | } | |
148 | #endif | |
149 | ||
a9429e29 | 150 | stmt = ggc_alloc_cleared_gimple_statement_d_stat (size PASS_MEM_STAT); |
726a989a RB |
151 | gimple_set_code (stmt, code); |
152 | gimple_set_num_ops (stmt, num_ops); | |
153 | ||
154 | /* Do not call gimple_set_modified here as it has other side | |
155 | effects and this tuple is still not completely built. */ | |
156 | stmt->gsbase.modified = 1; | |
157 | ||
158 | return stmt; | |
159 | } | |
160 | ||
161 | /* Set SUBCODE to be the code of the expression computed by statement G. */ | |
162 | ||
163 | static inline void | |
164 | gimple_set_subcode (gimple g, unsigned subcode) | |
165 | { | |
166 | /* We only have 16 bits for the RHS code. Assert that we are not | |
167 | overflowing it. */ | |
168 | gcc_assert (subcode < (1 << 16)); | |
169 | g->gsbase.subcode = subcode; | |
170 | } | |
171 | ||
172 | ||
173 | ||
174 | /* Build a tuple with operands. CODE is the statement to build (which | |
175 | must be one of the GIMPLE_WITH_OPS tuples). SUBCODE is the sub-code | |
b8698a0f | 176 | for the new tuple. NUM_OPS is the number of operands to allocate. */ |
726a989a RB |
177 | |
178 | #define gimple_build_with_ops(c, s, n) \ | |
179 | gimple_build_with_ops_stat (c, s, n MEM_STAT_INFO) | |
180 | ||
181 | static gimple | |
b5b8b0ac | 182 | gimple_build_with_ops_stat (enum gimple_code code, unsigned subcode, |
726a989a RB |
183 | unsigned num_ops MEM_STAT_DECL) |
184 | { | |
185 | gimple s = gimple_alloc_stat (code, num_ops PASS_MEM_STAT); | |
186 | gimple_set_subcode (s, subcode); | |
187 | ||
188 | return s; | |
189 | } | |
190 | ||
191 | ||
192 | /* Build a GIMPLE_RETURN statement returning RETVAL. */ | |
193 | ||
194 | gimple | |
195 | gimple_build_return (tree retval) | |
196 | { | |
bbbbb16a | 197 | gimple s = gimple_build_with_ops (GIMPLE_RETURN, ERROR_MARK, 1); |
726a989a RB |
198 | if (retval) |
199 | gimple_return_set_retval (s, retval); | |
200 | return s; | |
201 | } | |
202 | ||
d086d311 RG |
203 | /* Reset alias information on call S. */ |
204 | ||
205 | void | |
206 | gimple_call_reset_alias_info (gimple s) | |
207 | { | |
208 | if (gimple_call_flags (s) & ECF_CONST) | |
209 | memset (gimple_call_use_set (s), 0, sizeof (struct pt_solution)); | |
210 | else | |
211 | pt_solution_reset (gimple_call_use_set (s)); | |
212 | if (gimple_call_flags (s) & (ECF_CONST|ECF_PURE|ECF_NOVOPS)) | |
213 | memset (gimple_call_clobber_set (s), 0, sizeof (struct pt_solution)); | |
214 | else | |
215 | pt_solution_reset (gimple_call_clobber_set (s)); | |
216 | } | |
217 | ||
21860814 JJ |
218 | /* Helper for gimple_build_call, gimple_build_call_valist, |
219 | gimple_build_call_vec and gimple_build_call_from_tree. Build the basic | |
220 | components of a GIMPLE_CALL statement to function FN with NARGS | |
221 | arguments. */ | |
726a989a RB |
222 | |
223 | static inline gimple | |
224 | gimple_build_call_1 (tree fn, unsigned nargs) | |
225 | { | |
bbbbb16a | 226 | gimple s = gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, nargs + 3); |
7c9577be RG |
227 | if (TREE_CODE (fn) == FUNCTION_DECL) |
228 | fn = build_fold_addr_expr (fn); | |
726a989a | 229 | gimple_set_op (s, 1, fn); |
f20ca725 | 230 | gimple_call_set_fntype (s, TREE_TYPE (TREE_TYPE (fn))); |
d086d311 | 231 | gimple_call_reset_alias_info (s); |
726a989a RB |
232 | return s; |
233 | } | |
234 | ||
235 | ||
236 | /* Build a GIMPLE_CALL statement to function FN with the arguments | |
237 | specified in vector ARGS. */ | |
238 | ||
239 | gimple | |
240 | gimple_build_call_vec (tree fn, VEC(tree, heap) *args) | |
241 | { | |
242 | unsigned i; | |
243 | unsigned nargs = VEC_length (tree, args); | |
244 | gimple call = gimple_build_call_1 (fn, nargs); | |
245 | ||
246 | for (i = 0; i < nargs; i++) | |
247 | gimple_call_set_arg (call, i, VEC_index (tree, args, i)); | |
248 | ||
249 | return call; | |
250 | } | |
251 | ||
252 | ||
253 | /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of | |
254 | arguments. The ... are the arguments. */ | |
255 | ||
256 | gimple | |
257 | gimple_build_call (tree fn, unsigned nargs, ...) | |
258 | { | |
259 | va_list ap; | |
260 | gimple call; | |
261 | unsigned i; | |
262 | ||
263 | gcc_assert (TREE_CODE (fn) == FUNCTION_DECL || is_gimple_call_addr (fn)); | |
264 | ||
265 | call = gimple_build_call_1 (fn, nargs); | |
266 | ||
267 | va_start (ap, nargs); | |
268 | for (i = 0; i < nargs; i++) | |
269 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
270 | va_end (ap); | |
271 | ||
272 | return call; | |
273 | } | |
274 | ||
275 | ||
21860814 JJ |
276 | /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of |
277 | arguments. AP contains the arguments. */ | |
278 | ||
279 | gimple | |
280 | gimple_build_call_valist (tree fn, unsigned nargs, va_list ap) | |
281 | { | |
282 | gimple call; | |
283 | unsigned i; | |
284 | ||
285 | gcc_assert (TREE_CODE (fn) == FUNCTION_DECL || is_gimple_call_addr (fn)); | |
286 | ||
287 | call = gimple_build_call_1 (fn, nargs); | |
288 | ||
289 | for (i = 0; i < nargs; i++) | |
290 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
291 | ||
292 | return call; | |
293 | } | |
294 | ||
295 | ||
25583c4f RS |
296 | /* Helper for gimple_build_call_internal and gimple_build_call_internal_vec. |
297 | Build the basic components of a GIMPLE_CALL statement to internal | |
298 | function FN with NARGS arguments. */ | |
299 | ||
300 | static inline gimple | |
301 | gimple_build_call_internal_1 (enum internal_fn fn, unsigned nargs) | |
302 | { | |
303 | gimple s = gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, nargs + 3); | |
304 | s->gsbase.subcode |= GF_CALL_INTERNAL; | |
305 | gimple_call_set_internal_fn (s, fn); | |
306 | gimple_call_reset_alias_info (s); | |
307 | return s; | |
308 | } | |
309 | ||
310 | ||
311 | /* Build a GIMPLE_CALL statement to internal function FN. NARGS is | |
312 | the number of arguments. The ... are the arguments. */ | |
313 | ||
314 | gimple | |
315 | gimple_build_call_internal (enum internal_fn fn, unsigned nargs, ...) | |
316 | { | |
317 | va_list ap; | |
318 | gimple call; | |
319 | unsigned i; | |
320 | ||
321 | call = gimple_build_call_internal_1 (fn, nargs); | |
322 | va_start (ap, nargs); | |
323 | for (i = 0; i < nargs; i++) | |
324 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
325 | va_end (ap); | |
326 | ||
327 | return call; | |
328 | } | |
329 | ||
330 | ||
331 | /* Build a GIMPLE_CALL statement to internal function FN with the arguments | |
332 | specified in vector ARGS. */ | |
333 | ||
334 | gimple | |
335 | gimple_build_call_internal_vec (enum internal_fn fn, VEC(tree, heap) *args) | |
336 | { | |
337 | unsigned i, nargs; | |
338 | gimple call; | |
339 | ||
340 | nargs = VEC_length (tree, args); | |
341 | call = gimple_build_call_internal_1 (fn, nargs); | |
342 | for (i = 0; i < nargs; i++) | |
343 | gimple_call_set_arg (call, i, VEC_index (tree, args, i)); | |
344 | ||
345 | return call; | |
346 | } | |
347 | ||
348 | ||
726a989a RB |
349 | /* Build a GIMPLE_CALL statement from CALL_EXPR T. Note that T is |
350 | assumed to be in GIMPLE form already. Minimal checking is done of | |
351 | this fact. */ | |
352 | ||
353 | gimple | |
354 | gimple_build_call_from_tree (tree t) | |
355 | { | |
356 | unsigned i, nargs; | |
357 | gimple call; | |
358 | tree fndecl = get_callee_fndecl (t); | |
359 | ||
360 | gcc_assert (TREE_CODE (t) == CALL_EXPR); | |
361 | ||
362 | nargs = call_expr_nargs (t); | |
363 | call = gimple_build_call_1 (fndecl ? fndecl : CALL_EXPR_FN (t), nargs); | |
364 | ||
365 | for (i = 0; i < nargs; i++) | |
366 | gimple_call_set_arg (call, i, CALL_EXPR_ARG (t, i)); | |
367 | ||
368 | gimple_set_block (call, TREE_BLOCK (t)); | |
369 | ||
370 | /* Carry all the CALL_EXPR flags to the new GIMPLE_CALL. */ | |
371 | gimple_call_set_chain (call, CALL_EXPR_STATIC_CHAIN (t)); | |
372 | gimple_call_set_tail (call, CALL_EXPR_TAILCALL (t)); | |
726a989a | 373 | gimple_call_set_return_slot_opt (call, CALL_EXPR_RETURN_SLOT_OPT (t)); |
63d2a353 MM |
374 | if (fndecl |
375 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
13e49da9 TV |
376 | && (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_ALLOCA |
377 | || DECL_FUNCTION_CODE (fndecl) == BUILT_IN_ALLOCA_WITH_ALIGN)) | |
63d2a353 MM |
378 | gimple_call_set_alloca_for_var (call, CALL_ALLOCA_FOR_VAR_P (t)); |
379 | else | |
380 | gimple_call_set_from_thunk (call, CALL_FROM_THUNK_P (t)); | |
726a989a | 381 | gimple_call_set_va_arg_pack (call, CALL_EXPR_VA_ARG_PACK (t)); |
9bb1a81b | 382 | gimple_call_set_nothrow (call, TREE_NOTHROW (t)); |
d665b6e5 | 383 | gimple_set_no_warning (call, TREE_NO_WARNING (t)); |
726a989a RB |
384 | |
385 | return call; | |
386 | } | |
387 | ||
388 | ||
389 | /* Extract the operands and code for expression EXPR into *SUBCODE_P, | |
0354c0c7 | 390 | *OP1_P, *OP2_P and *OP3_P respectively. */ |
726a989a RB |
391 | |
392 | void | |
0354c0c7 BS |
393 | extract_ops_from_tree_1 (tree expr, enum tree_code *subcode_p, tree *op1_p, |
394 | tree *op2_p, tree *op3_p) | |
726a989a | 395 | { |
82d6e6fc | 396 | enum gimple_rhs_class grhs_class; |
726a989a RB |
397 | |
398 | *subcode_p = TREE_CODE (expr); | |
82d6e6fc | 399 | grhs_class = get_gimple_rhs_class (*subcode_p); |
726a989a | 400 | |
0354c0c7 | 401 | if (grhs_class == GIMPLE_TERNARY_RHS) |
726a989a RB |
402 | { |
403 | *op1_p = TREE_OPERAND (expr, 0); | |
404 | *op2_p = TREE_OPERAND (expr, 1); | |
0354c0c7 BS |
405 | *op3_p = TREE_OPERAND (expr, 2); |
406 | } | |
407 | else if (grhs_class == GIMPLE_BINARY_RHS) | |
408 | { | |
409 | *op1_p = TREE_OPERAND (expr, 0); | |
410 | *op2_p = TREE_OPERAND (expr, 1); | |
411 | *op3_p = NULL_TREE; | |
726a989a | 412 | } |
82d6e6fc | 413 | else if (grhs_class == GIMPLE_UNARY_RHS) |
726a989a RB |
414 | { |
415 | *op1_p = TREE_OPERAND (expr, 0); | |
416 | *op2_p = NULL_TREE; | |
0354c0c7 | 417 | *op3_p = NULL_TREE; |
726a989a | 418 | } |
82d6e6fc | 419 | else if (grhs_class == GIMPLE_SINGLE_RHS) |
726a989a RB |
420 | { |
421 | *op1_p = expr; | |
422 | *op2_p = NULL_TREE; | |
0354c0c7 | 423 | *op3_p = NULL_TREE; |
726a989a RB |
424 | } |
425 | else | |
426 | gcc_unreachable (); | |
427 | } | |
428 | ||
429 | ||
430 | /* Build a GIMPLE_ASSIGN statement. | |
431 | ||
432 | LHS of the assignment. | |
433 | RHS of the assignment which can be unary or binary. */ | |
434 | ||
435 | gimple | |
436 | gimple_build_assign_stat (tree lhs, tree rhs MEM_STAT_DECL) | |
437 | { | |
438 | enum tree_code subcode; | |
0354c0c7 | 439 | tree op1, op2, op3; |
726a989a | 440 | |
0354c0c7 BS |
441 | extract_ops_from_tree_1 (rhs, &subcode, &op1, &op2, &op3); |
442 | return gimple_build_assign_with_ops_stat (subcode, lhs, op1, op2, op3 | |
726a989a RB |
443 | PASS_MEM_STAT); |
444 | } | |
445 | ||
446 | ||
447 | /* Build a GIMPLE_ASSIGN statement with sub-code SUBCODE and operands | |
448 | OP1 and OP2. If OP2 is NULL then SUBCODE must be of class | |
449 | GIMPLE_UNARY_RHS or GIMPLE_SINGLE_RHS. */ | |
450 | ||
451 | gimple | |
452 | gimple_build_assign_with_ops_stat (enum tree_code subcode, tree lhs, tree op1, | |
0354c0c7 | 453 | tree op2, tree op3 MEM_STAT_DECL) |
726a989a RB |
454 | { |
455 | unsigned num_ops; | |
456 | gimple p; | |
457 | ||
458 | /* Need 1 operand for LHS and 1 or 2 for the RHS (depending on the | |
459 | code). */ | |
460 | num_ops = get_gimple_rhs_num_ops (subcode) + 1; | |
b8698a0f | 461 | |
b5b8b0ac | 462 | p = gimple_build_with_ops_stat (GIMPLE_ASSIGN, (unsigned)subcode, num_ops |
726a989a RB |
463 | PASS_MEM_STAT); |
464 | gimple_assign_set_lhs (p, lhs); | |
465 | gimple_assign_set_rhs1 (p, op1); | |
466 | if (op2) | |
467 | { | |
468 | gcc_assert (num_ops > 2); | |
469 | gimple_assign_set_rhs2 (p, op2); | |
470 | } | |
471 | ||
0354c0c7 BS |
472 | if (op3) |
473 | { | |
474 | gcc_assert (num_ops > 3); | |
475 | gimple_assign_set_rhs3 (p, op3); | |
476 | } | |
477 | ||
726a989a RB |
478 | return p; |
479 | } | |
480 | ||
481 | ||
482 | /* Build a new GIMPLE_ASSIGN tuple and append it to the end of *SEQ_P. | |
483 | ||
484 | DST/SRC are the destination and source respectively. You can pass | |
485 | ungimplified trees in DST or SRC, in which case they will be | |
486 | converted to a gimple operand if necessary. | |
487 | ||
488 | This function returns the newly created GIMPLE_ASSIGN tuple. */ | |
489 | ||
5fd8300b | 490 | gimple |
726a989a | 491 | gimplify_assign (tree dst, tree src, gimple_seq *seq_p) |
b8698a0f | 492 | { |
726a989a RB |
493 | tree t = build2 (MODIFY_EXPR, TREE_TYPE (dst), dst, src); |
494 | gimplify_and_add (t, seq_p); | |
495 | ggc_free (t); | |
496 | return gimple_seq_last_stmt (*seq_p); | |
497 | } | |
498 | ||
499 | ||
500 | /* Build a GIMPLE_COND statement. | |
501 | ||
502 | PRED is the condition used to compare LHS and the RHS. | |
503 | T_LABEL is the label to jump to if the condition is true. | |
504 | F_LABEL is the label to jump to otherwise. */ | |
505 | ||
506 | gimple | |
507 | gimple_build_cond (enum tree_code pred_code, tree lhs, tree rhs, | |
508 | tree t_label, tree f_label) | |
509 | { | |
510 | gimple p; | |
511 | ||
512 | gcc_assert (TREE_CODE_CLASS (pred_code) == tcc_comparison); | |
513 | p = gimple_build_with_ops (GIMPLE_COND, pred_code, 4); | |
514 | gimple_cond_set_lhs (p, lhs); | |
515 | gimple_cond_set_rhs (p, rhs); | |
516 | gimple_cond_set_true_label (p, t_label); | |
517 | gimple_cond_set_false_label (p, f_label); | |
518 | return p; | |
519 | } | |
520 | ||
521 | ||
522 | /* Extract operands for a GIMPLE_COND statement out of COND_EXPR tree COND. */ | |
523 | ||
524 | void | |
525 | gimple_cond_get_ops_from_tree (tree cond, enum tree_code *code_p, | |
526 | tree *lhs_p, tree *rhs_p) | |
527 | { | |
528 | gcc_assert (TREE_CODE_CLASS (TREE_CODE (cond)) == tcc_comparison | |
529 | || TREE_CODE (cond) == TRUTH_NOT_EXPR | |
530 | || is_gimple_min_invariant (cond) | |
531 | || SSA_VAR_P (cond)); | |
532 | ||
533 | extract_ops_from_tree (cond, code_p, lhs_p, rhs_p); | |
534 | ||
535 | /* Canonicalize conditionals of the form 'if (!VAL)'. */ | |
536 | if (*code_p == TRUTH_NOT_EXPR) | |
537 | { | |
538 | *code_p = EQ_EXPR; | |
539 | gcc_assert (*lhs_p && *rhs_p == NULL_TREE); | |
e8160c9a | 540 | *rhs_p = build_zero_cst (TREE_TYPE (*lhs_p)); |
726a989a RB |
541 | } |
542 | /* Canonicalize conditionals of the form 'if (VAL)' */ | |
543 | else if (TREE_CODE_CLASS (*code_p) != tcc_comparison) | |
544 | { | |
545 | *code_p = NE_EXPR; | |
546 | gcc_assert (*lhs_p && *rhs_p == NULL_TREE); | |
e8160c9a | 547 | *rhs_p = build_zero_cst (TREE_TYPE (*lhs_p)); |
726a989a RB |
548 | } |
549 | } | |
550 | ||
551 | ||
552 | /* Build a GIMPLE_COND statement from the conditional expression tree | |
553 | COND. T_LABEL and F_LABEL are as in gimple_build_cond. */ | |
554 | ||
555 | gimple | |
556 | gimple_build_cond_from_tree (tree cond, tree t_label, tree f_label) | |
557 | { | |
558 | enum tree_code code; | |
559 | tree lhs, rhs; | |
560 | ||
561 | gimple_cond_get_ops_from_tree (cond, &code, &lhs, &rhs); | |
562 | return gimple_build_cond (code, lhs, rhs, t_label, f_label); | |
563 | } | |
564 | ||
565 | /* Set code, lhs, and rhs of a GIMPLE_COND from a suitable | |
566 | boolean expression tree COND. */ | |
567 | ||
568 | void | |
569 | gimple_cond_set_condition_from_tree (gimple stmt, tree cond) | |
570 | { | |
571 | enum tree_code code; | |
572 | tree lhs, rhs; | |
573 | ||
574 | gimple_cond_get_ops_from_tree (cond, &code, &lhs, &rhs); | |
575 | gimple_cond_set_condition (stmt, code, lhs, rhs); | |
576 | } | |
577 | ||
578 | /* Build a GIMPLE_LABEL statement for LABEL. */ | |
579 | ||
580 | gimple | |
581 | gimple_build_label (tree label) | |
582 | { | |
bbbbb16a | 583 | gimple p = gimple_build_with_ops (GIMPLE_LABEL, ERROR_MARK, 1); |
726a989a RB |
584 | gimple_label_set_label (p, label); |
585 | return p; | |
586 | } | |
587 | ||
588 | /* Build a GIMPLE_GOTO statement to label DEST. */ | |
589 | ||
590 | gimple | |
591 | gimple_build_goto (tree dest) | |
592 | { | |
bbbbb16a | 593 | gimple p = gimple_build_with_ops (GIMPLE_GOTO, ERROR_MARK, 1); |
726a989a RB |
594 | gimple_goto_set_dest (p, dest); |
595 | return p; | |
596 | } | |
597 | ||
598 | ||
599 | /* Build a GIMPLE_NOP statement. */ | |
600 | ||
b8698a0f | 601 | gimple |
726a989a RB |
602 | gimple_build_nop (void) |
603 | { | |
604 | return gimple_alloc (GIMPLE_NOP, 0); | |
605 | } | |
606 | ||
607 | ||
608 | /* Build a GIMPLE_BIND statement. | |
609 | VARS are the variables in BODY. | |
610 | BLOCK is the containing block. */ | |
611 | ||
612 | gimple | |
613 | gimple_build_bind (tree vars, gimple_seq body, tree block) | |
614 | { | |
615 | gimple p = gimple_alloc (GIMPLE_BIND, 0); | |
616 | gimple_bind_set_vars (p, vars); | |
617 | if (body) | |
618 | gimple_bind_set_body (p, body); | |
619 | if (block) | |
620 | gimple_bind_set_block (p, block); | |
621 | return p; | |
622 | } | |
623 | ||
624 | /* Helper function to set the simple fields of a asm stmt. | |
625 | ||
626 | STRING is a pointer to a string that is the asm blocks assembly code. | |
627 | NINPUT is the number of register inputs. | |
628 | NOUTPUT is the number of register outputs. | |
629 | NCLOBBERS is the number of clobbered registers. | |
630 | */ | |
631 | ||
632 | static inline gimple | |
b8698a0f | 633 | gimple_build_asm_1 (const char *string, unsigned ninputs, unsigned noutputs, |
1c384bf1 | 634 | unsigned nclobbers, unsigned nlabels) |
726a989a RB |
635 | { |
636 | gimple p; | |
637 | int size = strlen (string); | |
638 | ||
1c384bf1 RH |
639 | /* ASMs with labels cannot have outputs. This should have been |
640 | enforced by the front end. */ | |
641 | gcc_assert (nlabels == 0 || noutputs == 0); | |
642 | ||
bbbbb16a | 643 | p = gimple_build_with_ops (GIMPLE_ASM, ERROR_MARK, |
1c384bf1 | 644 | ninputs + noutputs + nclobbers + nlabels); |
726a989a RB |
645 | |
646 | p->gimple_asm.ni = ninputs; | |
647 | p->gimple_asm.no = noutputs; | |
648 | p->gimple_asm.nc = nclobbers; | |
1c384bf1 | 649 | p->gimple_asm.nl = nlabels; |
726a989a RB |
650 | p->gimple_asm.string = ggc_alloc_string (string, size); |
651 | ||
652 | #ifdef GATHER_STATISTICS | |
653 | gimple_alloc_sizes[(int) gimple_alloc_kind (GIMPLE_ASM)] += size; | |
654 | #endif | |
b8698a0f | 655 | |
726a989a RB |
656 | return p; |
657 | } | |
658 | ||
659 | /* Build a GIMPLE_ASM statement. | |
660 | ||
661 | STRING is the assembly code. | |
662 | NINPUT is the number of register inputs. | |
663 | NOUTPUT is the number of register outputs. | |
664 | NCLOBBERS is the number of clobbered registers. | |
665 | INPUTS is a vector of the input register parameters. | |
666 | OUTPUTS is a vector of the output register parameters. | |
1c384bf1 RH |
667 | CLOBBERS is a vector of the clobbered register parameters. |
668 | LABELS is a vector of destination labels. */ | |
726a989a RB |
669 | |
670 | gimple | |
b8698a0f | 671 | gimple_build_asm_vec (const char *string, VEC(tree,gc)* inputs, |
1c384bf1 RH |
672 | VEC(tree,gc)* outputs, VEC(tree,gc)* clobbers, |
673 | VEC(tree,gc)* labels) | |
726a989a RB |
674 | { |
675 | gimple p; | |
676 | unsigned i; | |
677 | ||
678 | p = gimple_build_asm_1 (string, | |
679 | VEC_length (tree, inputs), | |
b8698a0f | 680 | VEC_length (tree, outputs), |
1c384bf1 RH |
681 | VEC_length (tree, clobbers), |
682 | VEC_length (tree, labels)); | |
b8698a0f | 683 | |
726a989a RB |
684 | for (i = 0; i < VEC_length (tree, inputs); i++) |
685 | gimple_asm_set_input_op (p, i, VEC_index (tree, inputs, i)); | |
686 | ||
687 | for (i = 0; i < VEC_length (tree, outputs); i++) | |
688 | gimple_asm_set_output_op (p, i, VEC_index (tree, outputs, i)); | |
689 | ||
690 | for (i = 0; i < VEC_length (tree, clobbers); i++) | |
691 | gimple_asm_set_clobber_op (p, i, VEC_index (tree, clobbers, i)); | |
b8698a0f | 692 | |
1c384bf1 RH |
693 | for (i = 0; i < VEC_length (tree, labels); i++) |
694 | gimple_asm_set_label_op (p, i, VEC_index (tree, labels, i)); | |
b8698a0f | 695 | |
726a989a RB |
696 | return p; |
697 | } | |
698 | ||
699 | /* Build a GIMPLE_CATCH statement. | |
700 | ||
701 | TYPES are the catch types. | |
702 | HANDLER is the exception handler. */ | |
703 | ||
704 | gimple | |
705 | gimple_build_catch (tree types, gimple_seq handler) | |
706 | { | |
707 | gimple p = gimple_alloc (GIMPLE_CATCH, 0); | |
708 | gimple_catch_set_types (p, types); | |
709 | if (handler) | |
710 | gimple_catch_set_handler (p, handler); | |
711 | ||
712 | return p; | |
713 | } | |
714 | ||
715 | /* Build a GIMPLE_EH_FILTER statement. | |
716 | ||
717 | TYPES are the filter's types. | |
718 | FAILURE is the filter's failure action. */ | |
719 | ||
720 | gimple | |
721 | gimple_build_eh_filter (tree types, gimple_seq failure) | |
722 | { | |
723 | gimple p = gimple_alloc (GIMPLE_EH_FILTER, 0); | |
724 | gimple_eh_filter_set_types (p, types); | |
725 | if (failure) | |
726 | gimple_eh_filter_set_failure (p, failure); | |
727 | ||
728 | return p; | |
729 | } | |
730 | ||
1d65f45c RH |
731 | /* Build a GIMPLE_EH_MUST_NOT_THROW statement. */ |
732 | ||
733 | gimple | |
734 | gimple_build_eh_must_not_throw (tree decl) | |
735 | { | |
786f715d | 736 | gimple p = gimple_alloc (GIMPLE_EH_MUST_NOT_THROW, 0); |
1d65f45c RH |
737 | |
738 | gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); | |
739 | gcc_assert (flags_from_decl_or_type (decl) & ECF_NORETURN); | |
d7f09764 | 740 | gimple_eh_must_not_throw_set_fndecl (p, decl); |
1d65f45c RH |
741 | |
742 | return p; | |
743 | } | |
744 | ||
0a35513e AH |
745 | /* Build a GIMPLE_EH_ELSE statement. */ |
746 | ||
747 | gimple | |
748 | gimple_build_eh_else (gimple_seq n_body, gimple_seq e_body) | |
749 | { | |
750 | gimple p = gimple_alloc (GIMPLE_EH_ELSE, 0); | |
751 | gimple_eh_else_set_n_body (p, n_body); | |
752 | gimple_eh_else_set_e_body (p, e_body); | |
753 | return p; | |
754 | } | |
755 | ||
726a989a RB |
756 | /* Build a GIMPLE_TRY statement. |
757 | ||
758 | EVAL is the expression to evaluate. | |
759 | CLEANUP is the cleanup expression. | |
760 | KIND is either GIMPLE_TRY_CATCH or GIMPLE_TRY_FINALLY depending on | |
761 | whether this is a try/catch or a try/finally respectively. */ | |
762 | ||
763 | gimple | |
764 | gimple_build_try (gimple_seq eval, gimple_seq cleanup, | |
765 | enum gimple_try_flags kind) | |
766 | { | |
767 | gimple p; | |
768 | ||
769 | gcc_assert (kind == GIMPLE_TRY_CATCH || kind == GIMPLE_TRY_FINALLY); | |
770 | p = gimple_alloc (GIMPLE_TRY, 0); | |
771 | gimple_set_subcode (p, kind); | |
772 | if (eval) | |
773 | gimple_try_set_eval (p, eval); | |
774 | if (cleanup) | |
775 | gimple_try_set_cleanup (p, cleanup); | |
776 | ||
777 | return p; | |
778 | } | |
779 | ||
780 | /* Construct a GIMPLE_WITH_CLEANUP_EXPR statement. | |
781 | ||
782 | CLEANUP is the cleanup expression. */ | |
783 | ||
784 | gimple | |
785 | gimple_build_wce (gimple_seq cleanup) | |
786 | { | |
787 | gimple p = gimple_alloc (GIMPLE_WITH_CLEANUP_EXPR, 0); | |
788 | if (cleanup) | |
789 | gimple_wce_set_cleanup (p, cleanup); | |
790 | ||
791 | return p; | |
792 | } | |
793 | ||
794 | ||
1d65f45c | 795 | /* Build a GIMPLE_RESX statement. */ |
726a989a RB |
796 | |
797 | gimple | |
798 | gimple_build_resx (int region) | |
799 | { | |
1d65f45c RH |
800 | gimple p = gimple_build_with_ops (GIMPLE_RESX, ERROR_MARK, 0); |
801 | p->gimple_eh_ctrl.region = region; | |
726a989a RB |
802 | return p; |
803 | } | |
804 | ||
805 | ||
806 | /* The helper for constructing a gimple switch statement. | |
807 | INDEX is the switch's index. | |
808 | NLABELS is the number of labels in the switch excluding the default. | |
809 | DEFAULT_LABEL is the default label for the switch statement. */ | |
810 | ||
b8698a0f | 811 | gimple |
1d65f45c | 812 | gimple_build_switch_nlabels (unsigned nlabels, tree index, tree default_label) |
726a989a RB |
813 | { |
814 | /* nlabels + 1 default label + 1 index. */ | |
bbbbb16a | 815 | gimple p = gimple_build_with_ops (GIMPLE_SWITCH, ERROR_MARK, |
1d65f45c | 816 | 1 + (default_label != NULL) + nlabels); |
726a989a | 817 | gimple_switch_set_index (p, index); |
1d65f45c RH |
818 | if (default_label) |
819 | gimple_switch_set_default_label (p, default_label); | |
726a989a RB |
820 | return p; |
821 | } | |
822 | ||
823 | ||
824 | /* Build a GIMPLE_SWITCH statement. | |
825 | ||
826 | INDEX is the switch's index. | |
b8698a0f | 827 | NLABELS is the number of labels in the switch excluding the DEFAULT_LABEL. |
726a989a RB |
828 | ... are the labels excluding the default. */ |
829 | ||
b8698a0f | 830 | gimple |
726a989a RB |
831 | gimple_build_switch (unsigned nlabels, tree index, tree default_label, ...) |
832 | { | |
833 | va_list al; | |
1d65f45c RH |
834 | unsigned i, offset; |
835 | gimple p = gimple_build_switch_nlabels (nlabels, index, default_label); | |
726a989a RB |
836 | |
837 | /* Store the rest of the labels. */ | |
838 | va_start (al, default_label); | |
1d65f45c RH |
839 | offset = (default_label != NULL); |
840 | for (i = 0; i < nlabels; i++) | |
841 | gimple_switch_set_label (p, i + offset, va_arg (al, tree)); | |
726a989a RB |
842 | va_end (al); |
843 | ||
844 | return p; | |
845 | } | |
846 | ||
847 | ||
848 | /* Build a GIMPLE_SWITCH statement. | |
849 | ||
850 | INDEX is the switch's index. | |
851 | DEFAULT_LABEL is the default label | |
852 | ARGS is a vector of labels excluding the default. */ | |
853 | ||
854 | gimple | |
855 | gimple_build_switch_vec (tree index, tree default_label, VEC(tree, heap) *args) | |
856 | { | |
1d65f45c RH |
857 | unsigned i, offset, nlabels = VEC_length (tree, args); |
858 | gimple p = gimple_build_switch_nlabels (nlabels, index, default_label); | |
726a989a | 859 | |
1d65f45c RH |
860 | /* Copy the labels from the vector to the switch statement. */ |
861 | offset = (default_label != NULL); | |
862 | for (i = 0; i < nlabels; i++) | |
863 | gimple_switch_set_label (p, i + offset, VEC_index (tree, args, i)); | |
726a989a RB |
864 | |
865 | return p; | |
866 | } | |
867 | ||
1d65f45c RH |
868 | /* Build a GIMPLE_EH_DISPATCH statement. */ |
869 | ||
870 | gimple | |
871 | gimple_build_eh_dispatch (int region) | |
872 | { | |
873 | gimple p = gimple_build_with_ops (GIMPLE_EH_DISPATCH, ERROR_MARK, 0); | |
874 | p->gimple_eh_ctrl.region = region; | |
875 | return p; | |
876 | } | |
726a989a | 877 | |
b5b8b0ac AO |
878 | /* Build a new GIMPLE_DEBUG_BIND statement. |
879 | ||
880 | VAR is bound to VALUE; block and location are taken from STMT. */ | |
881 | ||
882 | gimple | |
883 | gimple_build_debug_bind_stat (tree var, tree value, gimple stmt MEM_STAT_DECL) | |
884 | { | |
885 | gimple p = gimple_build_with_ops_stat (GIMPLE_DEBUG, | |
886 | (unsigned)GIMPLE_DEBUG_BIND, 2 | |
887 | PASS_MEM_STAT); | |
888 | ||
889 | gimple_debug_bind_set_var (p, var); | |
890 | gimple_debug_bind_set_value (p, value); | |
891 | if (stmt) | |
892 | { | |
893 | gimple_set_block (p, gimple_block (stmt)); | |
894 | gimple_set_location (p, gimple_location (stmt)); | |
895 | } | |
896 | ||
897 | return p; | |
898 | } | |
899 | ||
900 | ||
ddb555ed JJ |
901 | /* Build a new GIMPLE_DEBUG_SOURCE_BIND statement. |
902 | ||
903 | VAR is bound to VALUE; block and location are taken from STMT. */ | |
904 | ||
905 | gimple | |
906 | gimple_build_debug_source_bind_stat (tree var, tree value, | |
907 | gimple stmt MEM_STAT_DECL) | |
908 | { | |
909 | gimple p = gimple_build_with_ops_stat (GIMPLE_DEBUG, | |
910 | (unsigned)GIMPLE_DEBUG_SOURCE_BIND, 2 | |
911 | PASS_MEM_STAT); | |
912 | ||
913 | gimple_debug_source_bind_set_var (p, var); | |
914 | gimple_debug_source_bind_set_value (p, value); | |
915 | if (stmt) | |
916 | { | |
917 | gimple_set_block (p, gimple_block (stmt)); | |
918 | gimple_set_location (p, gimple_location (stmt)); | |
919 | } | |
920 | ||
921 | return p; | |
922 | } | |
923 | ||
924 | ||
726a989a RB |
925 | /* Build a GIMPLE_OMP_CRITICAL statement. |
926 | ||
927 | BODY is the sequence of statements for which only one thread can execute. | |
928 | NAME is optional identifier for this critical block. */ | |
929 | ||
b8698a0f | 930 | gimple |
726a989a RB |
931 | gimple_build_omp_critical (gimple_seq body, tree name) |
932 | { | |
933 | gimple p = gimple_alloc (GIMPLE_OMP_CRITICAL, 0); | |
934 | gimple_omp_critical_set_name (p, name); | |
935 | if (body) | |
936 | gimple_omp_set_body (p, body); | |
937 | ||
938 | return p; | |
939 | } | |
940 | ||
941 | /* Build a GIMPLE_OMP_FOR statement. | |
942 | ||
943 | BODY is sequence of statements inside the for loop. | |
b8698a0f | 944 | CLAUSES, are any of the OMP loop construct's clauses: private, firstprivate, |
726a989a RB |
945 | lastprivate, reductions, ordered, schedule, and nowait. |
946 | COLLAPSE is the collapse count. | |
947 | PRE_BODY is the sequence of statements that are loop invariant. */ | |
948 | ||
949 | gimple | |
950 | gimple_build_omp_for (gimple_seq body, tree clauses, size_t collapse, | |
951 | gimple_seq pre_body) | |
952 | { | |
953 | gimple p = gimple_alloc (GIMPLE_OMP_FOR, 0); | |
954 | if (body) | |
955 | gimple_omp_set_body (p, body); | |
956 | gimple_omp_for_set_clauses (p, clauses); | |
957 | p->gimple_omp_for.collapse = collapse; | |
a9429e29 LB |
958 | p->gimple_omp_for.iter |
959 | = ggc_alloc_cleared_vec_gimple_omp_for_iter (collapse); | |
726a989a RB |
960 | if (pre_body) |
961 | gimple_omp_for_set_pre_body (p, pre_body); | |
962 | ||
963 | return p; | |
964 | } | |
965 | ||
966 | ||
967 | /* Build a GIMPLE_OMP_PARALLEL statement. | |
968 | ||
969 | BODY is sequence of statements which are executed in parallel. | |
970 | CLAUSES, are the OMP parallel construct's clauses. | |
971 | CHILD_FN is the function created for the parallel threads to execute. | |
972 | DATA_ARG are the shared data argument(s). */ | |
973 | ||
b8698a0f L |
974 | gimple |
975 | gimple_build_omp_parallel (gimple_seq body, tree clauses, tree child_fn, | |
726a989a RB |
976 | tree data_arg) |
977 | { | |
978 | gimple p = gimple_alloc (GIMPLE_OMP_PARALLEL, 0); | |
979 | if (body) | |
980 | gimple_omp_set_body (p, body); | |
981 | gimple_omp_parallel_set_clauses (p, clauses); | |
982 | gimple_omp_parallel_set_child_fn (p, child_fn); | |
983 | gimple_omp_parallel_set_data_arg (p, data_arg); | |
984 | ||
985 | return p; | |
986 | } | |
987 | ||
988 | ||
989 | /* Build a GIMPLE_OMP_TASK statement. | |
990 | ||
991 | BODY is sequence of statements which are executed by the explicit task. | |
992 | CLAUSES, are the OMP parallel construct's clauses. | |
993 | CHILD_FN is the function created for the parallel threads to execute. | |
994 | DATA_ARG are the shared data argument(s). | |
995 | COPY_FN is the optional function for firstprivate initialization. | |
996 | ARG_SIZE and ARG_ALIGN are size and alignment of the data block. */ | |
997 | ||
b8698a0f | 998 | gimple |
726a989a RB |
999 | gimple_build_omp_task (gimple_seq body, tree clauses, tree child_fn, |
1000 | tree data_arg, tree copy_fn, tree arg_size, | |
1001 | tree arg_align) | |
1002 | { | |
1003 | gimple p = gimple_alloc (GIMPLE_OMP_TASK, 0); | |
1004 | if (body) | |
1005 | gimple_omp_set_body (p, body); | |
1006 | gimple_omp_task_set_clauses (p, clauses); | |
1007 | gimple_omp_task_set_child_fn (p, child_fn); | |
1008 | gimple_omp_task_set_data_arg (p, data_arg); | |
1009 | gimple_omp_task_set_copy_fn (p, copy_fn); | |
1010 | gimple_omp_task_set_arg_size (p, arg_size); | |
1011 | gimple_omp_task_set_arg_align (p, arg_align); | |
1012 | ||
1013 | return p; | |
1014 | } | |
1015 | ||
1016 | ||
1017 | /* Build a GIMPLE_OMP_SECTION statement for a sections statement. | |
1018 | ||
1019 | BODY is the sequence of statements in the section. */ | |
1020 | ||
1021 | gimple | |
1022 | gimple_build_omp_section (gimple_seq body) | |
1023 | { | |
1024 | gimple p = gimple_alloc (GIMPLE_OMP_SECTION, 0); | |
1025 | if (body) | |
1026 | gimple_omp_set_body (p, body); | |
1027 | ||
1028 | return p; | |
1029 | } | |
1030 | ||
1031 | ||
1032 | /* Build a GIMPLE_OMP_MASTER statement. | |
1033 | ||
1034 | BODY is the sequence of statements to be executed by just the master. */ | |
1035 | ||
b8698a0f | 1036 | gimple |
726a989a RB |
1037 | gimple_build_omp_master (gimple_seq body) |
1038 | { | |
1039 | gimple p = gimple_alloc (GIMPLE_OMP_MASTER, 0); | |
1040 | if (body) | |
1041 | gimple_omp_set_body (p, body); | |
1042 | ||
1043 | return p; | |
1044 | } | |
1045 | ||
1046 | ||
1047 | /* Build a GIMPLE_OMP_CONTINUE statement. | |
1048 | ||
1049 | CONTROL_DEF is the definition of the control variable. | |
1050 | CONTROL_USE is the use of the control variable. */ | |
1051 | ||
b8698a0f | 1052 | gimple |
726a989a RB |
1053 | gimple_build_omp_continue (tree control_def, tree control_use) |
1054 | { | |
1055 | gimple p = gimple_alloc (GIMPLE_OMP_CONTINUE, 0); | |
1056 | gimple_omp_continue_set_control_def (p, control_def); | |
1057 | gimple_omp_continue_set_control_use (p, control_use); | |
1058 | return p; | |
1059 | } | |
1060 | ||
1061 | /* Build a GIMPLE_OMP_ORDERED statement. | |
1062 | ||
1063 | BODY is the sequence of statements inside a loop that will executed in | |
1064 | sequence. */ | |
1065 | ||
b8698a0f | 1066 | gimple |
726a989a RB |
1067 | gimple_build_omp_ordered (gimple_seq body) |
1068 | { | |
1069 | gimple p = gimple_alloc (GIMPLE_OMP_ORDERED, 0); | |
1070 | if (body) | |
1071 | gimple_omp_set_body (p, body); | |
1072 | ||
1073 | return p; | |
1074 | } | |
1075 | ||
1076 | ||
1077 | /* Build a GIMPLE_OMP_RETURN statement. | |
1078 | WAIT_P is true if this is a non-waiting return. */ | |
1079 | ||
b8698a0f | 1080 | gimple |
726a989a RB |
1081 | gimple_build_omp_return (bool wait_p) |
1082 | { | |
1083 | gimple p = gimple_alloc (GIMPLE_OMP_RETURN, 0); | |
1084 | if (wait_p) | |
1085 | gimple_omp_return_set_nowait (p); | |
1086 | ||
1087 | return p; | |
1088 | } | |
1089 | ||
1090 | ||
1091 | /* Build a GIMPLE_OMP_SECTIONS statement. | |
1092 | ||
1093 | BODY is a sequence of section statements. | |
1094 | CLAUSES are any of the OMP sections contsruct's clauses: private, | |
1095 | firstprivate, lastprivate, reduction, and nowait. */ | |
1096 | ||
b8698a0f | 1097 | gimple |
726a989a RB |
1098 | gimple_build_omp_sections (gimple_seq body, tree clauses) |
1099 | { | |
1100 | gimple p = gimple_alloc (GIMPLE_OMP_SECTIONS, 0); | |
1101 | if (body) | |
1102 | gimple_omp_set_body (p, body); | |
1103 | gimple_omp_sections_set_clauses (p, clauses); | |
1104 | ||
1105 | return p; | |
1106 | } | |
1107 | ||
1108 | ||
1109 | /* Build a GIMPLE_OMP_SECTIONS_SWITCH. */ | |
1110 | ||
1111 | gimple | |
1112 | gimple_build_omp_sections_switch (void) | |
1113 | { | |
1114 | return gimple_alloc (GIMPLE_OMP_SECTIONS_SWITCH, 0); | |
1115 | } | |
1116 | ||
1117 | ||
1118 | /* Build a GIMPLE_OMP_SINGLE statement. | |
1119 | ||
1120 | BODY is the sequence of statements that will be executed once. | |
1121 | CLAUSES are any of the OMP single construct's clauses: private, firstprivate, | |
1122 | copyprivate, nowait. */ | |
1123 | ||
b8698a0f | 1124 | gimple |
726a989a RB |
1125 | gimple_build_omp_single (gimple_seq body, tree clauses) |
1126 | { | |
1127 | gimple p = gimple_alloc (GIMPLE_OMP_SINGLE, 0); | |
1128 | if (body) | |
1129 | gimple_omp_set_body (p, body); | |
1130 | gimple_omp_single_set_clauses (p, clauses); | |
1131 | ||
1132 | return p; | |
1133 | } | |
1134 | ||
1135 | ||
726a989a RB |
1136 | /* Build a GIMPLE_OMP_ATOMIC_LOAD statement. */ |
1137 | ||
1138 | gimple | |
1139 | gimple_build_omp_atomic_load (tree lhs, tree rhs) | |
1140 | { | |
1141 | gimple p = gimple_alloc (GIMPLE_OMP_ATOMIC_LOAD, 0); | |
1142 | gimple_omp_atomic_load_set_lhs (p, lhs); | |
1143 | gimple_omp_atomic_load_set_rhs (p, rhs); | |
1144 | return p; | |
1145 | } | |
1146 | ||
1147 | /* Build a GIMPLE_OMP_ATOMIC_STORE statement. | |
1148 | ||
1149 | VAL is the value we are storing. */ | |
1150 | ||
1151 | gimple | |
1152 | gimple_build_omp_atomic_store (tree val) | |
1153 | { | |
1154 | gimple p = gimple_alloc (GIMPLE_OMP_ATOMIC_STORE, 0); | |
1155 | gimple_omp_atomic_store_set_val (p, val); | |
1156 | return p; | |
1157 | } | |
1158 | ||
0a35513e AH |
1159 | /* Build a GIMPLE_TRANSACTION statement. */ |
1160 | ||
1161 | gimple | |
1162 | gimple_build_transaction (gimple_seq body, tree label) | |
1163 | { | |
1164 | gimple p = gimple_alloc (GIMPLE_TRANSACTION, 0); | |
1165 | gimple_transaction_set_body (p, body); | |
1166 | gimple_transaction_set_label (p, label); | |
1167 | return p; | |
1168 | } | |
1169 | ||
726a989a RB |
1170 | /* Build a GIMPLE_PREDICT statement. PREDICT is one of the predictors from |
1171 | predict.def, OUTCOME is NOT_TAKEN or TAKEN. */ | |
1172 | ||
1173 | gimple | |
1174 | gimple_build_predict (enum br_predictor predictor, enum prediction outcome) | |
1175 | { | |
1176 | gimple p = gimple_alloc (GIMPLE_PREDICT, 0); | |
1177 | /* Ensure all the predictors fit into the lower bits of the subcode. */ | |
e0c68ce9 | 1178 | gcc_assert ((int) END_PREDICTORS <= GF_PREDICT_TAKEN); |
726a989a RB |
1179 | gimple_predict_set_predictor (p, predictor); |
1180 | gimple_predict_set_outcome (p, outcome); | |
1181 | return p; | |
1182 | } | |
1183 | ||
cea094ed | 1184 | #if defined ENABLE_GIMPLE_CHECKING |
726a989a RB |
1185 | /* Complain of a gimple type mismatch and die. */ |
1186 | ||
1187 | void | |
1188 | gimple_check_failed (const_gimple gs, const char *file, int line, | |
1189 | const char *function, enum gimple_code code, | |
1190 | enum tree_code subcode) | |
1191 | { | |
1192 | internal_error ("gimple check: expected %s(%s), have %s(%s) in %s, at %s:%d", | |
1193 | gimple_code_name[code], | |
1194 | tree_code_name[subcode], | |
1195 | gimple_code_name[gimple_code (gs)], | |
1196 | gs->gsbase.subcode > 0 | |
1197 | ? tree_code_name[gs->gsbase.subcode] | |
1198 | : "", | |
1199 | function, trim_filename (file), line); | |
1200 | } | |
726a989a RB |
1201 | #endif /* ENABLE_GIMPLE_CHECKING */ |
1202 | ||
1203 | ||
1204 | /* Allocate a new GIMPLE sequence in GC memory and return it. If | |
1205 | there are free sequences in GIMPLE_SEQ_CACHE return one of those | |
1206 | instead. */ | |
1207 | ||
1208 | gimple_seq | |
1209 | gimple_seq_alloc (void) | |
1210 | { | |
1211 | gimple_seq seq = gimple_seq_cache; | |
1212 | if (seq) | |
1213 | { | |
1214 | gimple_seq_cache = gimple_seq_cache->next_free; | |
1215 | gcc_assert (gimple_seq_cache != seq); | |
1216 | memset (seq, 0, sizeof (*seq)); | |
1217 | } | |
1218 | else | |
1219 | { | |
a9429e29 | 1220 | seq = ggc_alloc_cleared_gimple_seq_d (); |
726a989a RB |
1221 | #ifdef GATHER_STATISTICS |
1222 | gimple_alloc_counts[(int) gimple_alloc_kind_seq]++; | |
1223 | gimple_alloc_sizes[(int) gimple_alloc_kind_seq] += sizeof (*seq); | |
1224 | #endif | |
1225 | } | |
1226 | ||
1227 | return seq; | |
1228 | } | |
1229 | ||
1230 | /* Return SEQ to the free pool of GIMPLE sequences. */ | |
1231 | ||
1232 | void | |
1233 | gimple_seq_free (gimple_seq seq) | |
1234 | { | |
1235 | if (seq == NULL) | |
1236 | return; | |
1237 | ||
1238 | gcc_assert (gimple_seq_first (seq) == NULL); | |
1239 | gcc_assert (gimple_seq_last (seq) == NULL); | |
1240 | ||
1241 | /* If this triggers, it's a sign that the same list is being freed | |
1242 | twice. */ | |
1243 | gcc_assert (seq != gimple_seq_cache || gimple_seq_cache == NULL); | |
b8698a0f | 1244 | |
726a989a RB |
1245 | /* Add SEQ to the pool of free sequences. */ |
1246 | seq->next_free = gimple_seq_cache; | |
1247 | gimple_seq_cache = seq; | |
1248 | } | |
1249 | ||
1250 | ||
1251 | /* Link gimple statement GS to the end of the sequence *SEQ_P. If | |
1252 | *SEQ_P is NULL, a new sequence is allocated. */ | |
1253 | ||
1254 | void | |
1255 | gimple_seq_add_stmt (gimple_seq *seq_p, gimple gs) | |
1256 | { | |
1257 | gimple_stmt_iterator si; | |
1258 | ||
1259 | if (gs == NULL) | |
1260 | return; | |
1261 | ||
1262 | if (*seq_p == NULL) | |
1263 | *seq_p = gimple_seq_alloc (); | |
1264 | ||
1265 | si = gsi_last (*seq_p); | |
1266 | gsi_insert_after (&si, gs, GSI_NEW_STMT); | |
1267 | } | |
1268 | ||
1269 | ||
1270 | /* Append sequence SRC to the end of sequence *DST_P. If *DST_P is | |
1271 | NULL, a new sequence is allocated. */ | |
1272 | ||
1273 | void | |
1274 | gimple_seq_add_seq (gimple_seq *dst_p, gimple_seq src) | |
1275 | { | |
1276 | gimple_stmt_iterator si; | |
1277 | ||
1278 | if (src == NULL) | |
1279 | return; | |
1280 | ||
1281 | if (*dst_p == NULL) | |
1282 | *dst_p = gimple_seq_alloc (); | |
1283 | ||
1284 | si = gsi_last (*dst_p); | |
1285 | gsi_insert_seq_after (&si, src, GSI_NEW_STMT); | |
1286 | } | |
1287 | ||
1288 | ||
1289 | /* Helper function of empty_body_p. Return true if STMT is an empty | |
1290 | statement. */ | |
1291 | ||
1292 | static bool | |
1293 | empty_stmt_p (gimple stmt) | |
1294 | { | |
1295 | if (gimple_code (stmt) == GIMPLE_NOP) | |
1296 | return true; | |
1297 | if (gimple_code (stmt) == GIMPLE_BIND) | |
1298 | return empty_body_p (gimple_bind_body (stmt)); | |
1299 | return false; | |
1300 | } | |
1301 | ||
1302 | ||
1303 | /* Return true if BODY contains nothing but empty statements. */ | |
1304 | ||
1305 | bool | |
1306 | empty_body_p (gimple_seq body) | |
1307 | { | |
1308 | gimple_stmt_iterator i; | |
1309 | ||
726a989a RB |
1310 | if (gimple_seq_empty_p (body)) |
1311 | return true; | |
1312 | for (i = gsi_start (body); !gsi_end_p (i); gsi_next (&i)) | |
b5b8b0ac AO |
1313 | if (!empty_stmt_p (gsi_stmt (i)) |
1314 | && !is_gimple_debug (gsi_stmt (i))) | |
726a989a RB |
1315 | return false; |
1316 | ||
1317 | return true; | |
1318 | } | |
1319 | ||
1320 | ||
1321 | /* Perform a deep copy of sequence SRC and return the result. */ | |
1322 | ||
1323 | gimple_seq | |
1324 | gimple_seq_copy (gimple_seq src) | |
1325 | { | |
1326 | gimple_stmt_iterator gsi; | |
82d6e6fc | 1327 | gimple_seq new_seq = gimple_seq_alloc (); |
726a989a RB |
1328 | gimple stmt; |
1329 | ||
1330 | for (gsi = gsi_start (src); !gsi_end_p (gsi); gsi_next (&gsi)) | |
1331 | { | |
1332 | stmt = gimple_copy (gsi_stmt (gsi)); | |
82d6e6fc | 1333 | gimple_seq_add_stmt (&new_seq, stmt); |
726a989a RB |
1334 | } |
1335 | ||
82d6e6fc | 1336 | return new_seq; |
726a989a RB |
1337 | } |
1338 | ||
1339 | ||
1340 | /* Walk all the statements in the sequence SEQ calling walk_gimple_stmt | |
1341 | on each one. WI is as in walk_gimple_stmt. | |
b8698a0f | 1342 | |
0a35513e AH |
1343 | If walk_gimple_stmt returns non-NULL, the walk is stopped, and the |
1344 | value is stored in WI->CALLBACK_RESULT. Also, the statement that | |
1345 | produced the value is returned if this statement has not been | |
1346 | removed by a callback (wi->removed_stmt). If the statement has | |
1347 | been removed, NULL is returned. | |
726a989a RB |
1348 | |
1349 | Otherwise, all the statements are walked and NULL returned. */ | |
1350 | ||
1351 | gimple | |
1352 | walk_gimple_seq (gimple_seq seq, walk_stmt_fn callback_stmt, | |
1353 | walk_tree_fn callback_op, struct walk_stmt_info *wi) | |
1354 | { | |
1355 | gimple_stmt_iterator gsi; | |
1356 | ||
0a35513e | 1357 | for (gsi = gsi_start (seq); !gsi_end_p (gsi); ) |
726a989a RB |
1358 | { |
1359 | tree ret = walk_gimple_stmt (&gsi, callback_stmt, callback_op, wi); | |
1360 | if (ret) | |
1361 | { | |
1362 | /* If CALLBACK_STMT or CALLBACK_OP return a value, WI must exist | |
1363 | to hold it. */ | |
1364 | gcc_assert (wi); | |
1365 | wi->callback_result = ret; | |
0a35513e AH |
1366 | |
1367 | return wi->removed_stmt ? NULL : gsi_stmt (gsi); | |
726a989a | 1368 | } |
0a35513e AH |
1369 | |
1370 | if (!wi->removed_stmt) | |
1371 | gsi_next (&gsi); | |
726a989a RB |
1372 | } |
1373 | ||
1374 | if (wi) | |
1375 | wi->callback_result = NULL_TREE; | |
1376 | ||
1377 | return NULL; | |
1378 | } | |
1379 | ||
1380 | ||
1381 | /* Helper function for walk_gimple_stmt. Walk operands of a GIMPLE_ASM. */ | |
1382 | ||
1383 | static tree | |
1384 | walk_gimple_asm (gimple stmt, walk_tree_fn callback_op, | |
1385 | struct walk_stmt_info *wi) | |
1386 | { | |
1c384bf1 | 1387 | tree ret, op; |
726a989a RB |
1388 | unsigned noutputs; |
1389 | const char **oconstraints; | |
1c384bf1 | 1390 | unsigned i, n; |
726a989a RB |
1391 | const char *constraint; |
1392 | bool allows_mem, allows_reg, is_inout; | |
1393 | ||
1394 | noutputs = gimple_asm_noutputs (stmt); | |
1395 | oconstraints = (const char **) alloca ((noutputs) * sizeof (const char *)); | |
1396 | ||
1397 | if (wi) | |
1398 | wi->is_lhs = true; | |
1399 | ||
1400 | for (i = 0; i < noutputs; i++) | |
1401 | { | |
1c384bf1 | 1402 | op = gimple_asm_output_op (stmt, i); |
726a989a RB |
1403 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (op))); |
1404 | oconstraints[i] = constraint; | |
1405 | parse_output_constraint (&constraint, i, 0, 0, &allows_mem, &allows_reg, | |
1406 | &is_inout); | |
1407 | if (wi) | |
1408 | wi->val_only = (allows_reg || !allows_mem); | |
1409 | ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL); | |
1410 | if (ret) | |
1411 | return ret; | |
1412 | } | |
1413 | ||
1c384bf1 RH |
1414 | n = gimple_asm_ninputs (stmt); |
1415 | for (i = 0; i < n; i++) | |
726a989a | 1416 | { |
1c384bf1 | 1417 | op = gimple_asm_input_op (stmt, i); |
726a989a RB |
1418 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (op))); |
1419 | parse_input_constraint (&constraint, 0, 0, noutputs, 0, | |
1420 | oconstraints, &allows_mem, &allows_reg); | |
1421 | if (wi) | |
1c384bf1 RH |
1422 | { |
1423 | wi->val_only = (allows_reg || !allows_mem); | |
1424 | /* Although input "m" is not really a LHS, we need a lvalue. */ | |
1425 | wi->is_lhs = !wi->val_only; | |
1426 | } | |
726a989a RB |
1427 | ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL); |
1428 | if (ret) | |
1429 | return ret; | |
1430 | } | |
1431 | ||
1432 | if (wi) | |
1433 | { | |
1434 | wi->is_lhs = false; | |
1435 | wi->val_only = true; | |
1436 | } | |
1437 | ||
1c384bf1 RH |
1438 | n = gimple_asm_nlabels (stmt); |
1439 | for (i = 0; i < n; i++) | |
1440 | { | |
1441 | op = gimple_asm_label_op (stmt, i); | |
1442 | ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL); | |
1443 | if (ret) | |
1444 | return ret; | |
1445 | } | |
1446 | ||
726a989a RB |
1447 | return NULL_TREE; |
1448 | } | |
1449 | ||
1450 | ||
1451 | /* Helper function of WALK_GIMPLE_STMT. Walk every tree operand in | |
1452 | STMT. CALLBACK_OP and WI are as in WALK_GIMPLE_STMT. | |
1453 | ||
1454 | CALLBACK_OP is called on each operand of STMT via walk_tree. | |
1455 | Additional parameters to walk_tree must be stored in WI. For each operand | |
1456 | OP, walk_tree is called as: | |
1457 | ||
1458 | walk_tree (&OP, CALLBACK_OP, WI, WI->PSET) | |
1459 | ||
1460 | If CALLBACK_OP returns non-NULL for an operand, the remaining | |
1461 | operands are not scanned. | |
1462 | ||
1463 | The return value is that returned by the last call to walk_tree, or | |
1464 | NULL_TREE if no CALLBACK_OP is specified. */ | |
1465 | ||
6a4d4e8a | 1466 | tree |
726a989a RB |
1467 | walk_gimple_op (gimple stmt, walk_tree_fn callback_op, |
1468 | struct walk_stmt_info *wi) | |
1469 | { | |
1470 | struct pointer_set_t *pset = (wi) ? wi->pset : NULL; | |
1471 | unsigned i; | |
1472 | tree ret = NULL_TREE; | |
1473 | ||
1474 | switch (gimple_code (stmt)) | |
1475 | { | |
1476 | case GIMPLE_ASSIGN: | |
cb3d597d EB |
1477 | /* Walk the RHS operands. If the LHS is of a non-renamable type or |
1478 | is a register variable, we may use a COMPONENT_REF on the RHS. */ | |
726a989a | 1479 | if (wi) |
cb3d597d EB |
1480 | { |
1481 | tree lhs = gimple_assign_lhs (stmt); | |
1482 | wi->val_only | |
1483 | = (is_gimple_reg_type (TREE_TYPE (lhs)) && !is_gimple_reg (lhs)) | |
b9af73fc | 1484 | || gimple_assign_rhs_class (stmt) != GIMPLE_SINGLE_RHS; |
cb3d597d | 1485 | } |
726a989a RB |
1486 | |
1487 | for (i = 1; i < gimple_num_ops (stmt); i++) | |
1488 | { | |
1489 | ret = walk_tree (gimple_op_ptr (stmt, i), callback_op, wi, | |
1490 | pset); | |
1491 | if (ret) | |
1492 | return ret; | |
1493 | } | |
1494 | ||
1495 | /* Walk the LHS. If the RHS is appropriate for a memory, we | |
1496 | may use a COMPONENT_REF on the LHS. */ | |
1497 | if (wi) | |
1498 | { | |
216820a4 RG |
1499 | /* If the RHS is of a non-renamable type or is a register variable, |
1500 | we may use a COMPONENT_REF on the LHS. */ | |
b9af73fc | 1501 | tree rhs1 = gimple_assign_rhs1 (stmt); |
216820a4 RG |
1502 | wi->val_only |
1503 | = (is_gimple_reg_type (TREE_TYPE (rhs1)) && !is_gimple_reg (rhs1)) | |
1504 | || gimple_assign_rhs_class (stmt) != GIMPLE_SINGLE_RHS; | |
726a989a RB |
1505 | wi->is_lhs = true; |
1506 | } | |
1507 | ||
1508 | ret = walk_tree (gimple_op_ptr (stmt, 0), callback_op, wi, pset); | |
1509 | if (ret) | |
1510 | return ret; | |
1511 | ||
1512 | if (wi) | |
1513 | { | |
1514 | wi->val_only = true; | |
1515 | wi->is_lhs = false; | |
1516 | } | |
1517 | break; | |
1518 | ||
1519 | case GIMPLE_CALL: | |
1520 | if (wi) | |
523968bf RG |
1521 | { |
1522 | wi->is_lhs = false; | |
1523 | wi->val_only = true; | |
1524 | } | |
726a989a RB |
1525 | |
1526 | ret = walk_tree (gimple_call_chain_ptr (stmt), callback_op, wi, pset); | |
1527 | if (ret) | |
1528 | return ret; | |
1529 | ||
1530 | ret = walk_tree (gimple_call_fn_ptr (stmt), callback_op, wi, pset); | |
1531 | if (ret) | |
1532 | return ret; | |
1533 | ||
1534 | for (i = 0; i < gimple_call_num_args (stmt); i++) | |
1535 | { | |
523968bf | 1536 | if (wi) |
4d931f41 EB |
1537 | wi->val_only |
1538 | = is_gimple_reg_type (TREE_TYPE (gimple_call_arg (stmt, i))); | |
726a989a RB |
1539 | ret = walk_tree (gimple_call_arg_ptr (stmt, i), callback_op, wi, |
1540 | pset); | |
1541 | if (ret) | |
1542 | return ret; | |
1543 | } | |
1544 | ||
523968bf RG |
1545 | if (gimple_call_lhs (stmt)) |
1546 | { | |
1547 | if (wi) | |
1548 | { | |
1549 | wi->is_lhs = true; | |
4d931f41 EB |
1550 | wi->val_only |
1551 | = is_gimple_reg_type (TREE_TYPE (gimple_call_lhs (stmt))); | |
523968bf | 1552 | } |
726a989a | 1553 | |
523968bf RG |
1554 | ret = walk_tree (gimple_call_lhs_ptr (stmt), callback_op, wi, pset); |
1555 | if (ret) | |
1556 | return ret; | |
1557 | } | |
726a989a RB |
1558 | |
1559 | if (wi) | |
523968bf RG |
1560 | { |
1561 | wi->is_lhs = false; | |
1562 | wi->val_only = true; | |
1563 | } | |
726a989a RB |
1564 | break; |
1565 | ||
1566 | case GIMPLE_CATCH: | |
1567 | ret = walk_tree (gimple_catch_types_ptr (stmt), callback_op, wi, | |
1568 | pset); | |
1569 | if (ret) | |
1570 | return ret; | |
1571 | break; | |
1572 | ||
1573 | case GIMPLE_EH_FILTER: | |
1574 | ret = walk_tree (gimple_eh_filter_types_ptr (stmt), callback_op, wi, | |
1575 | pset); | |
1576 | if (ret) | |
1577 | return ret; | |
1578 | break; | |
1579 | ||
726a989a RB |
1580 | case GIMPLE_ASM: |
1581 | ret = walk_gimple_asm (stmt, callback_op, wi); | |
1582 | if (ret) | |
1583 | return ret; | |
1584 | break; | |
1585 | ||
1586 | case GIMPLE_OMP_CONTINUE: | |
1587 | ret = walk_tree (gimple_omp_continue_control_def_ptr (stmt), | |
1588 | callback_op, wi, pset); | |
1589 | if (ret) | |
1590 | return ret; | |
1591 | ||
1592 | ret = walk_tree (gimple_omp_continue_control_use_ptr (stmt), | |
1593 | callback_op, wi, pset); | |
1594 | if (ret) | |
1595 | return ret; | |
1596 | break; | |
1597 | ||
1598 | case GIMPLE_OMP_CRITICAL: | |
1599 | ret = walk_tree (gimple_omp_critical_name_ptr (stmt), callback_op, wi, | |
1600 | pset); | |
1601 | if (ret) | |
1602 | return ret; | |
1603 | break; | |
1604 | ||
1605 | case GIMPLE_OMP_FOR: | |
1606 | ret = walk_tree (gimple_omp_for_clauses_ptr (stmt), callback_op, wi, | |
1607 | pset); | |
1608 | if (ret) | |
1609 | return ret; | |
1610 | for (i = 0; i < gimple_omp_for_collapse (stmt); i++) | |
1611 | { | |
1612 | ret = walk_tree (gimple_omp_for_index_ptr (stmt, i), callback_op, | |
1613 | wi, pset); | |
1614 | if (ret) | |
1615 | return ret; | |
1616 | ret = walk_tree (gimple_omp_for_initial_ptr (stmt, i), callback_op, | |
1617 | wi, pset); | |
1618 | if (ret) | |
1619 | return ret; | |
1620 | ret = walk_tree (gimple_omp_for_final_ptr (stmt, i), callback_op, | |
1621 | wi, pset); | |
1622 | if (ret) | |
1623 | return ret; | |
1624 | ret = walk_tree (gimple_omp_for_incr_ptr (stmt, i), callback_op, | |
1625 | wi, pset); | |
1626 | } | |
1627 | if (ret) | |
1628 | return ret; | |
1629 | break; | |
1630 | ||
1631 | case GIMPLE_OMP_PARALLEL: | |
1632 | ret = walk_tree (gimple_omp_parallel_clauses_ptr (stmt), callback_op, | |
1633 | wi, pset); | |
1634 | if (ret) | |
1635 | return ret; | |
1636 | ret = walk_tree (gimple_omp_parallel_child_fn_ptr (stmt), callback_op, | |
1637 | wi, pset); | |
1638 | if (ret) | |
1639 | return ret; | |
1640 | ret = walk_tree (gimple_omp_parallel_data_arg_ptr (stmt), callback_op, | |
1641 | wi, pset); | |
1642 | if (ret) | |
1643 | return ret; | |
1644 | break; | |
1645 | ||
1646 | case GIMPLE_OMP_TASK: | |
1647 | ret = walk_tree (gimple_omp_task_clauses_ptr (stmt), callback_op, | |
1648 | wi, pset); | |
1649 | if (ret) | |
1650 | return ret; | |
1651 | ret = walk_tree (gimple_omp_task_child_fn_ptr (stmt), callback_op, | |
1652 | wi, pset); | |
1653 | if (ret) | |
1654 | return ret; | |
1655 | ret = walk_tree (gimple_omp_task_data_arg_ptr (stmt), callback_op, | |
1656 | wi, pset); | |
1657 | if (ret) | |
1658 | return ret; | |
1659 | ret = walk_tree (gimple_omp_task_copy_fn_ptr (stmt), callback_op, | |
1660 | wi, pset); | |
1661 | if (ret) | |
1662 | return ret; | |
1663 | ret = walk_tree (gimple_omp_task_arg_size_ptr (stmt), callback_op, | |
1664 | wi, pset); | |
1665 | if (ret) | |
1666 | return ret; | |
1667 | ret = walk_tree (gimple_omp_task_arg_align_ptr (stmt), callback_op, | |
1668 | wi, pset); | |
1669 | if (ret) | |
1670 | return ret; | |
1671 | break; | |
1672 | ||
1673 | case GIMPLE_OMP_SECTIONS: | |
1674 | ret = walk_tree (gimple_omp_sections_clauses_ptr (stmt), callback_op, | |
1675 | wi, pset); | |
1676 | if (ret) | |
1677 | return ret; | |
1678 | ||
1679 | ret = walk_tree (gimple_omp_sections_control_ptr (stmt), callback_op, | |
1680 | wi, pset); | |
1681 | if (ret) | |
1682 | return ret; | |
1683 | ||
1684 | break; | |
1685 | ||
1686 | case GIMPLE_OMP_SINGLE: | |
1687 | ret = walk_tree (gimple_omp_single_clauses_ptr (stmt), callback_op, wi, | |
1688 | pset); | |
1689 | if (ret) | |
1690 | return ret; | |
1691 | break; | |
1692 | ||
1693 | case GIMPLE_OMP_ATOMIC_LOAD: | |
1694 | ret = walk_tree (gimple_omp_atomic_load_lhs_ptr (stmt), callback_op, wi, | |
1695 | pset); | |
1696 | if (ret) | |
1697 | return ret; | |
1698 | ||
1699 | ret = walk_tree (gimple_omp_atomic_load_rhs_ptr (stmt), callback_op, wi, | |
1700 | pset); | |
1701 | if (ret) | |
1702 | return ret; | |
1703 | break; | |
1704 | ||
1705 | case GIMPLE_OMP_ATOMIC_STORE: | |
1706 | ret = walk_tree (gimple_omp_atomic_store_val_ptr (stmt), callback_op, | |
1707 | wi, pset); | |
1708 | if (ret) | |
1709 | return ret; | |
1710 | break; | |
1711 | ||
0a35513e AH |
1712 | case GIMPLE_TRANSACTION: |
1713 | ret = walk_tree (gimple_transaction_label_ptr (stmt), callback_op, | |
1714 | wi, pset); | |
1715 | if (ret) | |
1716 | return ret; | |
1717 | break; | |
1718 | ||
726a989a RB |
1719 | /* Tuples that do not have operands. */ |
1720 | case GIMPLE_NOP: | |
1721 | case GIMPLE_RESX: | |
1722 | case GIMPLE_OMP_RETURN: | |
1723 | case GIMPLE_PREDICT: | |
1724 | break; | |
1725 | ||
1726 | default: | |
1727 | { | |
1728 | enum gimple_statement_structure_enum gss; | |
1729 | gss = gimple_statement_structure (stmt); | |
1730 | if (gss == GSS_WITH_OPS || gss == GSS_WITH_MEM_OPS) | |
1731 | for (i = 0; i < gimple_num_ops (stmt); i++) | |
1732 | { | |
1733 | ret = walk_tree (gimple_op_ptr (stmt, i), callback_op, wi, pset); | |
1734 | if (ret) | |
1735 | return ret; | |
1736 | } | |
1737 | } | |
1738 | break; | |
1739 | } | |
1740 | ||
1741 | return NULL_TREE; | |
1742 | } | |
1743 | ||
1744 | ||
1745 | /* Walk the current statement in GSI (optionally using traversal state | |
1746 | stored in WI). If WI is NULL, no state is kept during traversal. | |
1747 | The callback CALLBACK_STMT is called. If CALLBACK_STMT indicates | |
1748 | that it has handled all the operands of the statement, its return | |
1749 | value is returned. Otherwise, the return value from CALLBACK_STMT | |
1750 | is discarded and its operands are scanned. | |
1751 | ||
1752 | If CALLBACK_STMT is NULL or it didn't handle the operands, | |
1753 | CALLBACK_OP is called on each operand of the statement via | |
1754 | walk_gimple_op. If walk_gimple_op returns non-NULL for any | |
1755 | operand, the remaining operands are not scanned. In this case, the | |
1756 | return value from CALLBACK_OP is returned. | |
1757 | ||
1758 | In any other case, NULL_TREE is returned. */ | |
1759 | ||
1760 | tree | |
1761 | walk_gimple_stmt (gimple_stmt_iterator *gsi, walk_stmt_fn callback_stmt, | |
1762 | walk_tree_fn callback_op, struct walk_stmt_info *wi) | |
1763 | { | |
1764 | gimple ret; | |
1765 | tree tree_ret; | |
1766 | gimple stmt = gsi_stmt (*gsi); | |
1767 | ||
1768 | if (wi) | |
0a35513e AH |
1769 | { |
1770 | wi->gsi = *gsi; | |
1771 | wi->removed_stmt = false; | |
726a989a | 1772 | |
0a35513e AH |
1773 | if (wi->want_locations && gimple_has_location (stmt)) |
1774 | input_location = gimple_location (stmt); | |
1775 | } | |
726a989a RB |
1776 | |
1777 | ret = NULL; | |
1778 | ||
1779 | /* Invoke the statement callback. Return if the callback handled | |
1780 | all of STMT operands by itself. */ | |
1781 | if (callback_stmt) | |
1782 | { | |
1783 | bool handled_ops = false; | |
1784 | tree_ret = callback_stmt (gsi, &handled_ops, wi); | |
1785 | if (handled_ops) | |
1786 | return tree_ret; | |
1787 | ||
1788 | /* If CALLBACK_STMT did not handle operands, it should not have | |
1789 | a value to return. */ | |
1790 | gcc_assert (tree_ret == NULL); | |
1791 | ||
0a35513e AH |
1792 | if (wi && wi->removed_stmt) |
1793 | return NULL; | |
1794 | ||
726a989a RB |
1795 | /* Re-read stmt in case the callback changed it. */ |
1796 | stmt = gsi_stmt (*gsi); | |
1797 | } | |
1798 | ||
1799 | /* If CALLBACK_OP is defined, invoke it on every operand of STMT. */ | |
1800 | if (callback_op) | |
1801 | { | |
1802 | tree_ret = walk_gimple_op (stmt, callback_op, wi); | |
1803 | if (tree_ret) | |
1804 | return tree_ret; | |
1805 | } | |
1806 | ||
1807 | /* If STMT can have statements inside (e.g. GIMPLE_BIND), walk them. */ | |
1808 | switch (gimple_code (stmt)) | |
1809 | { | |
1810 | case GIMPLE_BIND: | |
1811 | ret = walk_gimple_seq (gimple_bind_body (stmt), callback_stmt, | |
1812 | callback_op, wi); | |
1813 | if (ret) | |
1814 | return wi->callback_result; | |
1815 | break; | |
1816 | ||
1817 | case GIMPLE_CATCH: | |
1818 | ret = walk_gimple_seq (gimple_catch_handler (stmt), callback_stmt, | |
1819 | callback_op, wi); | |
1820 | if (ret) | |
1821 | return wi->callback_result; | |
1822 | break; | |
1823 | ||
1824 | case GIMPLE_EH_FILTER: | |
1825 | ret = walk_gimple_seq (gimple_eh_filter_failure (stmt), callback_stmt, | |
1826 | callback_op, wi); | |
1827 | if (ret) | |
1828 | return wi->callback_result; | |
1829 | break; | |
1830 | ||
0a35513e AH |
1831 | case GIMPLE_EH_ELSE: |
1832 | ret = walk_gimple_seq (gimple_eh_else_n_body (stmt), | |
1833 | callback_stmt, callback_op, wi); | |
1834 | if (ret) | |
1835 | return wi->callback_result; | |
1836 | ret = walk_gimple_seq (gimple_eh_else_e_body (stmt), | |
1837 | callback_stmt, callback_op, wi); | |
1838 | if (ret) | |
1839 | return wi->callback_result; | |
1840 | break; | |
1841 | ||
726a989a RB |
1842 | case GIMPLE_TRY: |
1843 | ret = walk_gimple_seq (gimple_try_eval (stmt), callback_stmt, callback_op, | |
1844 | wi); | |
1845 | if (ret) | |
1846 | return wi->callback_result; | |
1847 | ||
1848 | ret = walk_gimple_seq (gimple_try_cleanup (stmt), callback_stmt, | |
1849 | callback_op, wi); | |
1850 | if (ret) | |
1851 | return wi->callback_result; | |
1852 | break; | |
1853 | ||
1854 | case GIMPLE_OMP_FOR: | |
1855 | ret = walk_gimple_seq (gimple_omp_for_pre_body (stmt), callback_stmt, | |
1856 | callback_op, wi); | |
1857 | if (ret) | |
1858 | return wi->callback_result; | |
1859 | ||
1860 | /* FALL THROUGH. */ | |
1861 | case GIMPLE_OMP_CRITICAL: | |
1862 | case GIMPLE_OMP_MASTER: | |
1863 | case GIMPLE_OMP_ORDERED: | |
1864 | case GIMPLE_OMP_SECTION: | |
1865 | case GIMPLE_OMP_PARALLEL: | |
1866 | case GIMPLE_OMP_TASK: | |
1867 | case GIMPLE_OMP_SECTIONS: | |
1868 | case GIMPLE_OMP_SINGLE: | |
0a35513e AH |
1869 | ret = walk_gimple_seq (gimple_omp_body (stmt), callback_stmt, |
1870 | callback_op, wi); | |
726a989a RB |
1871 | if (ret) |
1872 | return wi->callback_result; | |
1873 | break; | |
1874 | ||
1875 | case GIMPLE_WITH_CLEANUP_EXPR: | |
1876 | ret = walk_gimple_seq (gimple_wce_cleanup (stmt), callback_stmt, | |
1877 | callback_op, wi); | |
1878 | if (ret) | |
1879 | return wi->callback_result; | |
1880 | break; | |
1881 | ||
0a35513e AH |
1882 | case GIMPLE_TRANSACTION: |
1883 | ret = walk_gimple_seq (gimple_transaction_body (stmt), | |
1884 | callback_stmt, callback_op, wi); | |
1885 | if (ret) | |
1886 | return wi->callback_result; | |
1887 | break; | |
1888 | ||
726a989a RB |
1889 | default: |
1890 | gcc_assert (!gimple_has_substatements (stmt)); | |
1891 | break; | |
1892 | } | |
1893 | ||
1894 | return NULL; | |
1895 | } | |
1896 | ||
1897 | ||
1898 | /* Set sequence SEQ to be the GIMPLE body for function FN. */ | |
1899 | ||
1900 | void | |
1901 | gimple_set_body (tree fndecl, gimple_seq seq) | |
1902 | { | |
1903 | struct function *fn = DECL_STRUCT_FUNCTION (fndecl); | |
1904 | if (fn == NULL) | |
1905 | { | |
1906 | /* If FNDECL still does not have a function structure associated | |
1907 | with it, then it does not make sense for it to receive a | |
1908 | GIMPLE body. */ | |
1909 | gcc_assert (seq == NULL); | |
1910 | } | |
1911 | else | |
1912 | fn->gimple_body = seq; | |
1913 | } | |
1914 | ||
1915 | ||
abbd64b9 JS |
1916 | /* Return the body of GIMPLE statements for function FN. After the |
1917 | CFG pass, the function body doesn't exist anymore because it has | |
1918 | been split up into basic blocks. In this case, it returns | |
1919 | NULL. */ | |
726a989a RB |
1920 | |
1921 | gimple_seq | |
1922 | gimple_body (tree fndecl) | |
1923 | { | |
1924 | struct function *fn = DECL_STRUCT_FUNCTION (fndecl); | |
1925 | return fn ? fn->gimple_body : NULL; | |
1926 | } | |
1927 | ||
39ecc018 JH |
1928 | /* Return true when FNDECL has Gimple body either in unlowered |
1929 | or CFG form. */ | |
1930 | bool | |
1931 | gimple_has_body_p (tree fndecl) | |
1932 | { | |
1933 | struct function *fn = DECL_STRUCT_FUNCTION (fndecl); | |
1934 | return (gimple_body (fndecl) || (fn && fn->cfg)); | |
1935 | } | |
726a989a | 1936 | |
25583c4f RS |
1937 | /* Return true if calls C1 and C2 are known to go to the same function. */ |
1938 | ||
1939 | bool | |
1940 | gimple_call_same_target_p (const_gimple c1, const_gimple c2) | |
1941 | { | |
1942 | if (gimple_call_internal_p (c1)) | |
1943 | return (gimple_call_internal_p (c2) | |
1944 | && gimple_call_internal_fn (c1) == gimple_call_internal_fn (c2)); | |
1945 | else | |
1946 | return (gimple_call_fn (c1) == gimple_call_fn (c2) | |
1947 | || (gimple_call_fndecl (c1) | |
1948 | && gimple_call_fndecl (c1) == gimple_call_fndecl (c2))); | |
1949 | } | |
1950 | ||
726a989a RB |
1951 | /* Detect flags from a GIMPLE_CALL. This is just like |
1952 | call_expr_flags, but for gimple tuples. */ | |
1953 | ||
1954 | int | |
1955 | gimple_call_flags (const_gimple stmt) | |
1956 | { | |
1957 | int flags; | |
1958 | tree decl = gimple_call_fndecl (stmt); | |
726a989a RB |
1959 | |
1960 | if (decl) | |
1961 | flags = flags_from_decl_or_type (decl); | |
25583c4f RS |
1962 | else if (gimple_call_internal_p (stmt)) |
1963 | flags = internal_fn_flags (gimple_call_internal_fn (stmt)); | |
726a989a | 1964 | else |
97e03fa1 | 1965 | flags = flags_from_decl_or_type (gimple_call_fntype (stmt)); |
726a989a | 1966 | |
9bb1a81b JM |
1967 | if (stmt->gsbase.subcode & GF_CALL_NOTHROW) |
1968 | flags |= ECF_NOTHROW; | |
1969 | ||
726a989a RB |
1970 | return flags; |
1971 | } | |
1972 | ||
25583c4f RS |
1973 | /* Return the "fn spec" string for call STMT. */ |
1974 | ||
1975 | static tree | |
1976 | gimple_call_fnspec (const_gimple stmt) | |
1977 | { | |
1978 | tree type, attr; | |
1979 | ||
1980 | type = gimple_call_fntype (stmt); | |
1981 | if (!type) | |
1982 | return NULL_TREE; | |
1983 | ||
1984 | attr = lookup_attribute ("fn spec", TYPE_ATTRIBUTES (type)); | |
1985 | if (!attr) | |
1986 | return NULL_TREE; | |
1987 | ||
1988 | return TREE_VALUE (TREE_VALUE (attr)); | |
1989 | } | |
1990 | ||
0b7b376d RG |
1991 | /* Detects argument flags for argument number ARG on call STMT. */ |
1992 | ||
1993 | int | |
1994 | gimple_call_arg_flags (const_gimple stmt, unsigned arg) | |
1995 | { | |
25583c4f | 1996 | tree attr = gimple_call_fnspec (stmt); |
0b7b376d | 1997 | |
25583c4f | 1998 | if (!attr || 1 + arg >= (unsigned) TREE_STRING_LENGTH (attr)) |
0b7b376d RG |
1999 | return 0; |
2000 | ||
2001 | switch (TREE_STRING_POINTER (attr)[1 + arg]) | |
2002 | { | |
2003 | case 'x': | |
2004 | case 'X': | |
2005 | return EAF_UNUSED; | |
2006 | ||
2007 | case 'R': | |
2008 | return EAF_DIRECT | EAF_NOCLOBBER | EAF_NOESCAPE; | |
2009 | ||
2010 | case 'r': | |
2011 | return EAF_NOCLOBBER | EAF_NOESCAPE; | |
2012 | ||
2013 | case 'W': | |
2014 | return EAF_DIRECT | EAF_NOESCAPE; | |
2015 | ||
2016 | case 'w': | |
2017 | return EAF_NOESCAPE; | |
2018 | ||
2019 | case '.': | |
2020 | default: | |
2021 | return 0; | |
2022 | } | |
2023 | } | |
2024 | ||
2025 | /* Detects return flags for the call STMT. */ | |
2026 | ||
2027 | int | |
2028 | gimple_call_return_flags (const_gimple stmt) | |
2029 | { | |
25583c4f | 2030 | tree attr; |
0b7b376d RG |
2031 | |
2032 | if (gimple_call_flags (stmt) & ECF_MALLOC) | |
2033 | return ERF_NOALIAS; | |
2034 | ||
25583c4f RS |
2035 | attr = gimple_call_fnspec (stmt); |
2036 | if (!attr || TREE_STRING_LENGTH (attr) < 1) | |
0b7b376d RG |
2037 | return 0; |
2038 | ||
2039 | switch (TREE_STRING_POINTER (attr)[0]) | |
2040 | { | |
2041 | case '1': | |
2042 | case '2': | |
2043 | case '3': | |
2044 | case '4': | |
2045 | return ERF_RETURNS_ARG | (TREE_STRING_POINTER (attr)[0] - '1'); | |
2046 | ||
2047 | case 'm': | |
2048 | return ERF_NOALIAS; | |
2049 | ||
2050 | case '.': | |
2051 | default: | |
2052 | return 0; | |
2053 | } | |
2054 | } | |
726a989a | 2055 | |
3dbe9454 | 2056 | |
726a989a RB |
2057 | /* Return true if GS is a copy assignment. */ |
2058 | ||
2059 | bool | |
2060 | gimple_assign_copy_p (gimple gs) | |
2061 | { | |
3dbe9454 RG |
2062 | return (gimple_assign_single_p (gs) |
2063 | && is_gimple_val (gimple_op (gs, 1))); | |
726a989a RB |
2064 | } |
2065 | ||
2066 | ||
2067 | /* Return true if GS is a SSA_NAME copy assignment. */ | |
2068 | ||
2069 | bool | |
2070 | gimple_assign_ssa_name_copy_p (gimple gs) | |
2071 | { | |
3dbe9454 | 2072 | return (gimple_assign_single_p (gs) |
726a989a RB |
2073 | && TREE_CODE (gimple_assign_lhs (gs)) == SSA_NAME |
2074 | && TREE_CODE (gimple_assign_rhs1 (gs)) == SSA_NAME); | |
2075 | } | |
2076 | ||
2077 | ||
726a989a RB |
2078 | /* Return true if GS is an assignment with a unary RHS, but the |
2079 | operator has no effect on the assigned value. The logic is adapted | |
2080 | from STRIP_NOPS. This predicate is intended to be used in tuplifying | |
2081 | instances in which STRIP_NOPS was previously applied to the RHS of | |
2082 | an assignment. | |
2083 | ||
2084 | NOTE: In the use cases that led to the creation of this function | |
2085 | and of gimple_assign_single_p, it is typical to test for either | |
2086 | condition and to proceed in the same manner. In each case, the | |
2087 | assigned value is represented by the single RHS operand of the | |
2088 | assignment. I suspect there may be cases where gimple_assign_copy_p, | |
2089 | gimple_assign_single_p, or equivalent logic is used where a similar | |
2090 | treatment of unary NOPs is appropriate. */ | |
b8698a0f | 2091 | |
726a989a RB |
2092 | bool |
2093 | gimple_assign_unary_nop_p (gimple gs) | |
2094 | { | |
3dbe9454 | 2095 | return (is_gimple_assign (gs) |
1a87cf0c | 2096 | && (CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (gs)) |
726a989a RB |
2097 | || gimple_assign_rhs_code (gs) == NON_LVALUE_EXPR) |
2098 | && gimple_assign_rhs1 (gs) != error_mark_node | |
2099 | && (TYPE_MODE (TREE_TYPE (gimple_assign_lhs (gs))) | |
2100 | == TYPE_MODE (TREE_TYPE (gimple_assign_rhs1 (gs))))); | |
2101 | } | |
2102 | ||
2103 | /* Set BB to be the basic block holding G. */ | |
2104 | ||
2105 | void | |
2106 | gimple_set_bb (gimple stmt, basic_block bb) | |
2107 | { | |
2108 | stmt->gsbase.bb = bb; | |
2109 | ||
2110 | /* If the statement is a label, add the label to block-to-labels map | |
2111 | so that we can speed up edge creation for GIMPLE_GOTOs. */ | |
2112 | if (cfun->cfg && gimple_code (stmt) == GIMPLE_LABEL) | |
2113 | { | |
2114 | tree t; | |
2115 | int uid; | |
2116 | ||
2117 | t = gimple_label_label (stmt); | |
2118 | uid = LABEL_DECL_UID (t); | |
2119 | if (uid == -1) | |
2120 | { | |
2121 | unsigned old_len = VEC_length (basic_block, label_to_block_map); | |
2122 | LABEL_DECL_UID (t) = uid = cfun->cfg->last_label_uid++; | |
2123 | if (old_len <= (unsigned) uid) | |
2124 | { | |
5006671f | 2125 | unsigned new_len = 3 * uid / 2 + 1; |
726a989a RB |
2126 | |
2127 | VEC_safe_grow_cleared (basic_block, gc, label_to_block_map, | |
2128 | new_len); | |
2129 | } | |
2130 | } | |
2131 | ||
2132 | VEC_replace (basic_block, label_to_block_map, uid, bb); | |
2133 | } | |
2134 | } | |
2135 | ||
2136 | ||
726a989a RB |
2137 | /* Modify the RHS of the assignment pointed-to by GSI using the |
2138 | operands in the expression tree EXPR. | |
2139 | ||
2140 | NOTE: The statement pointed-to by GSI may be reallocated if it | |
2141 | did not have enough operand slots. | |
2142 | ||
2143 | This function is useful to convert an existing tree expression into | |
2144 | the flat representation used for the RHS of a GIMPLE assignment. | |
2145 | It will reallocate memory as needed to expand or shrink the number | |
2146 | of operand slots needed to represent EXPR. | |
2147 | ||
2148 | NOTE: If you find yourself building a tree and then calling this | |
2149 | function, you are most certainly doing it the slow way. It is much | |
2150 | better to build a new assignment or to use the function | |
2151 | gimple_assign_set_rhs_with_ops, which does not require an | |
2152 | expression tree to be built. */ | |
2153 | ||
2154 | void | |
2155 | gimple_assign_set_rhs_from_tree (gimple_stmt_iterator *gsi, tree expr) | |
2156 | { | |
2157 | enum tree_code subcode; | |
0354c0c7 | 2158 | tree op1, op2, op3; |
726a989a | 2159 | |
0354c0c7 BS |
2160 | extract_ops_from_tree_1 (expr, &subcode, &op1, &op2, &op3); |
2161 | gimple_assign_set_rhs_with_ops_1 (gsi, subcode, op1, op2, op3); | |
726a989a RB |
2162 | } |
2163 | ||
2164 | ||
2165 | /* Set the RHS of assignment statement pointed-to by GSI to CODE with | |
0354c0c7 | 2166 | operands OP1, OP2 and OP3. |
726a989a RB |
2167 | |
2168 | NOTE: The statement pointed-to by GSI may be reallocated if it | |
2169 | did not have enough operand slots. */ | |
2170 | ||
2171 | void | |
0354c0c7 BS |
2172 | gimple_assign_set_rhs_with_ops_1 (gimple_stmt_iterator *gsi, enum tree_code code, |
2173 | tree op1, tree op2, tree op3) | |
726a989a RB |
2174 | { |
2175 | unsigned new_rhs_ops = get_gimple_rhs_num_ops (code); | |
2176 | gimple stmt = gsi_stmt (*gsi); | |
2177 | ||
2178 | /* If the new CODE needs more operands, allocate a new statement. */ | |
2179 | if (gimple_num_ops (stmt) < new_rhs_ops + 1) | |
2180 | { | |
2181 | tree lhs = gimple_assign_lhs (stmt); | |
2182 | gimple new_stmt = gimple_alloc (gimple_code (stmt), new_rhs_ops + 1); | |
2183 | memcpy (new_stmt, stmt, gimple_size (gimple_code (stmt))); | |
2184 | gsi_replace (gsi, new_stmt, true); | |
2185 | stmt = new_stmt; | |
2186 | ||
2187 | /* The LHS needs to be reset as this also changes the SSA name | |
2188 | on the LHS. */ | |
2189 | gimple_assign_set_lhs (stmt, lhs); | |
2190 | } | |
2191 | ||
2192 | gimple_set_num_ops (stmt, new_rhs_ops + 1); | |
2193 | gimple_set_subcode (stmt, code); | |
2194 | gimple_assign_set_rhs1 (stmt, op1); | |
2195 | if (new_rhs_ops > 1) | |
2196 | gimple_assign_set_rhs2 (stmt, op2); | |
0354c0c7 BS |
2197 | if (new_rhs_ops > 2) |
2198 | gimple_assign_set_rhs3 (stmt, op3); | |
726a989a RB |
2199 | } |
2200 | ||
2201 | ||
2202 | /* Return the LHS of a statement that performs an assignment, | |
2203 | either a GIMPLE_ASSIGN or a GIMPLE_CALL. Returns NULL_TREE | |
2204 | for a call to a function that returns no value, or for a | |
2205 | statement other than an assignment or a call. */ | |
2206 | ||
2207 | tree | |
2208 | gimple_get_lhs (const_gimple stmt) | |
2209 | { | |
e0c68ce9 | 2210 | enum gimple_code code = gimple_code (stmt); |
726a989a RB |
2211 | |
2212 | if (code == GIMPLE_ASSIGN) | |
2213 | return gimple_assign_lhs (stmt); | |
2214 | else if (code == GIMPLE_CALL) | |
2215 | return gimple_call_lhs (stmt); | |
2216 | else | |
2217 | return NULL_TREE; | |
2218 | } | |
2219 | ||
2220 | ||
2221 | /* Set the LHS of a statement that performs an assignment, | |
2222 | either a GIMPLE_ASSIGN or a GIMPLE_CALL. */ | |
2223 | ||
2224 | void | |
2225 | gimple_set_lhs (gimple stmt, tree lhs) | |
2226 | { | |
e0c68ce9 | 2227 | enum gimple_code code = gimple_code (stmt); |
726a989a RB |
2228 | |
2229 | if (code == GIMPLE_ASSIGN) | |
2230 | gimple_assign_set_lhs (stmt, lhs); | |
2231 | else if (code == GIMPLE_CALL) | |
2232 | gimple_call_set_lhs (stmt, lhs); | |
2233 | else | |
2234 | gcc_unreachable(); | |
2235 | } | |
2236 | ||
21cf7180 AO |
2237 | /* Replace the LHS of STMT, an assignment, either a GIMPLE_ASSIGN or a |
2238 | GIMPLE_CALL, with NLHS, in preparation for modifying the RHS to an | |
2239 | expression with a different value. | |
2240 | ||
2241 | This will update any annotations (say debug bind stmts) referring | |
2242 | to the original LHS, so that they use the RHS instead. This is | |
2243 | done even if NLHS and LHS are the same, for it is understood that | |
2244 | the RHS will be modified afterwards, and NLHS will not be assigned | |
2245 | an equivalent value. | |
2246 | ||
2247 | Adjusting any non-annotation uses of the LHS, if needed, is a | |
2248 | responsibility of the caller. | |
2249 | ||
2250 | The effect of this call should be pretty much the same as that of | |
2251 | inserting a copy of STMT before STMT, and then removing the | |
2252 | original stmt, at which time gsi_remove() would have update | |
2253 | annotations, but using this function saves all the inserting, | |
2254 | copying and removing. */ | |
2255 | ||
2256 | void | |
2257 | gimple_replace_lhs (gimple stmt, tree nlhs) | |
2258 | { | |
2259 | if (MAY_HAVE_DEBUG_STMTS) | |
2260 | { | |
2261 | tree lhs = gimple_get_lhs (stmt); | |
2262 | ||
2263 | gcc_assert (SSA_NAME_DEF_STMT (lhs) == stmt); | |
2264 | ||
2265 | insert_debug_temp_for_var_def (NULL, lhs); | |
2266 | } | |
2267 | ||
2268 | gimple_set_lhs (stmt, nlhs); | |
2269 | } | |
726a989a RB |
2270 | |
2271 | /* Return a deep copy of statement STMT. All the operands from STMT | |
2272 | are reallocated and copied using unshare_expr. The DEF, USE, VDEF | |
2273 | and VUSE operand arrays are set to empty in the new copy. */ | |
2274 | ||
2275 | gimple | |
2276 | gimple_copy (gimple stmt) | |
2277 | { | |
2278 | enum gimple_code code = gimple_code (stmt); | |
2279 | unsigned num_ops = gimple_num_ops (stmt); | |
2280 | gimple copy = gimple_alloc (code, num_ops); | |
2281 | unsigned i; | |
2282 | ||
2283 | /* Shallow copy all the fields from STMT. */ | |
2284 | memcpy (copy, stmt, gimple_size (code)); | |
2285 | ||
2286 | /* If STMT has sub-statements, deep-copy them as well. */ | |
2287 | if (gimple_has_substatements (stmt)) | |
2288 | { | |
2289 | gimple_seq new_seq; | |
2290 | tree t; | |
2291 | ||
2292 | switch (gimple_code (stmt)) | |
2293 | { | |
2294 | case GIMPLE_BIND: | |
2295 | new_seq = gimple_seq_copy (gimple_bind_body (stmt)); | |
2296 | gimple_bind_set_body (copy, new_seq); | |
2297 | gimple_bind_set_vars (copy, unshare_expr (gimple_bind_vars (stmt))); | |
2298 | gimple_bind_set_block (copy, gimple_bind_block (stmt)); | |
2299 | break; | |
2300 | ||
2301 | case GIMPLE_CATCH: | |
2302 | new_seq = gimple_seq_copy (gimple_catch_handler (stmt)); | |
2303 | gimple_catch_set_handler (copy, new_seq); | |
2304 | t = unshare_expr (gimple_catch_types (stmt)); | |
2305 | gimple_catch_set_types (copy, t); | |
2306 | break; | |
2307 | ||
2308 | case GIMPLE_EH_FILTER: | |
2309 | new_seq = gimple_seq_copy (gimple_eh_filter_failure (stmt)); | |
2310 | gimple_eh_filter_set_failure (copy, new_seq); | |
2311 | t = unshare_expr (gimple_eh_filter_types (stmt)); | |
2312 | gimple_eh_filter_set_types (copy, t); | |
2313 | break; | |
2314 | ||
0a35513e AH |
2315 | case GIMPLE_EH_ELSE: |
2316 | new_seq = gimple_seq_copy (gimple_eh_else_n_body (stmt)); | |
2317 | gimple_eh_else_set_n_body (copy, new_seq); | |
2318 | new_seq = gimple_seq_copy (gimple_eh_else_e_body (stmt)); | |
2319 | gimple_eh_else_set_e_body (copy, new_seq); | |
2320 | break; | |
2321 | ||
726a989a RB |
2322 | case GIMPLE_TRY: |
2323 | new_seq = gimple_seq_copy (gimple_try_eval (stmt)); | |
2324 | gimple_try_set_eval (copy, new_seq); | |
2325 | new_seq = gimple_seq_copy (gimple_try_cleanup (stmt)); | |
2326 | gimple_try_set_cleanup (copy, new_seq); | |
2327 | break; | |
2328 | ||
2329 | case GIMPLE_OMP_FOR: | |
2330 | new_seq = gimple_seq_copy (gimple_omp_for_pre_body (stmt)); | |
2331 | gimple_omp_for_set_pre_body (copy, new_seq); | |
2332 | t = unshare_expr (gimple_omp_for_clauses (stmt)); | |
2333 | gimple_omp_for_set_clauses (copy, t); | |
2334 | copy->gimple_omp_for.iter | |
a9429e29 LB |
2335 | = ggc_alloc_vec_gimple_omp_for_iter |
2336 | (gimple_omp_for_collapse (stmt)); | |
726a989a RB |
2337 | for (i = 0; i < gimple_omp_for_collapse (stmt); i++) |
2338 | { | |
2339 | gimple_omp_for_set_cond (copy, i, | |
2340 | gimple_omp_for_cond (stmt, i)); | |
2341 | gimple_omp_for_set_index (copy, i, | |
2342 | gimple_omp_for_index (stmt, i)); | |
2343 | t = unshare_expr (gimple_omp_for_initial (stmt, i)); | |
2344 | gimple_omp_for_set_initial (copy, i, t); | |
2345 | t = unshare_expr (gimple_omp_for_final (stmt, i)); | |
2346 | gimple_omp_for_set_final (copy, i, t); | |
2347 | t = unshare_expr (gimple_omp_for_incr (stmt, i)); | |
2348 | gimple_omp_for_set_incr (copy, i, t); | |
2349 | } | |
2350 | goto copy_omp_body; | |
2351 | ||
2352 | case GIMPLE_OMP_PARALLEL: | |
2353 | t = unshare_expr (gimple_omp_parallel_clauses (stmt)); | |
2354 | gimple_omp_parallel_set_clauses (copy, t); | |
2355 | t = unshare_expr (gimple_omp_parallel_child_fn (stmt)); | |
2356 | gimple_omp_parallel_set_child_fn (copy, t); | |
2357 | t = unshare_expr (gimple_omp_parallel_data_arg (stmt)); | |
2358 | gimple_omp_parallel_set_data_arg (copy, t); | |
2359 | goto copy_omp_body; | |
2360 | ||
2361 | case GIMPLE_OMP_TASK: | |
2362 | t = unshare_expr (gimple_omp_task_clauses (stmt)); | |
2363 | gimple_omp_task_set_clauses (copy, t); | |
2364 | t = unshare_expr (gimple_omp_task_child_fn (stmt)); | |
2365 | gimple_omp_task_set_child_fn (copy, t); | |
2366 | t = unshare_expr (gimple_omp_task_data_arg (stmt)); | |
2367 | gimple_omp_task_set_data_arg (copy, t); | |
2368 | t = unshare_expr (gimple_omp_task_copy_fn (stmt)); | |
2369 | gimple_omp_task_set_copy_fn (copy, t); | |
2370 | t = unshare_expr (gimple_omp_task_arg_size (stmt)); | |
2371 | gimple_omp_task_set_arg_size (copy, t); | |
2372 | t = unshare_expr (gimple_omp_task_arg_align (stmt)); | |
2373 | gimple_omp_task_set_arg_align (copy, t); | |
2374 | goto copy_omp_body; | |
2375 | ||
2376 | case GIMPLE_OMP_CRITICAL: | |
2377 | t = unshare_expr (gimple_omp_critical_name (stmt)); | |
2378 | gimple_omp_critical_set_name (copy, t); | |
2379 | goto copy_omp_body; | |
2380 | ||
2381 | case GIMPLE_OMP_SECTIONS: | |
2382 | t = unshare_expr (gimple_omp_sections_clauses (stmt)); | |
2383 | gimple_omp_sections_set_clauses (copy, t); | |
2384 | t = unshare_expr (gimple_omp_sections_control (stmt)); | |
2385 | gimple_omp_sections_set_control (copy, t); | |
2386 | /* FALLTHRU */ | |
2387 | ||
2388 | case GIMPLE_OMP_SINGLE: | |
2389 | case GIMPLE_OMP_SECTION: | |
2390 | case GIMPLE_OMP_MASTER: | |
2391 | case GIMPLE_OMP_ORDERED: | |
2392 | copy_omp_body: | |
2393 | new_seq = gimple_seq_copy (gimple_omp_body (stmt)); | |
2394 | gimple_omp_set_body (copy, new_seq); | |
2395 | break; | |
2396 | ||
0a35513e AH |
2397 | case GIMPLE_TRANSACTION: |
2398 | new_seq = gimple_seq_copy (gimple_transaction_body (stmt)); | |
2399 | gimple_transaction_set_body (copy, new_seq); | |
2400 | break; | |
2401 | ||
726a989a RB |
2402 | case GIMPLE_WITH_CLEANUP_EXPR: |
2403 | new_seq = gimple_seq_copy (gimple_wce_cleanup (stmt)); | |
2404 | gimple_wce_set_cleanup (copy, new_seq); | |
2405 | break; | |
2406 | ||
2407 | default: | |
2408 | gcc_unreachable (); | |
2409 | } | |
2410 | } | |
2411 | ||
2412 | /* Make copy of operands. */ | |
2413 | if (num_ops > 0) | |
2414 | { | |
2415 | for (i = 0; i < num_ops; i++) | |
2416 | gimple_set_op (copy, i, unshare_expr (gimple_op (stmt, i))); | |
2417 | ||
ccacdf06 | 2418 | /* Clear out SSA operand vectors on COPY. */ |
726a989a RB |
2419 | if (gimple_has_ops (stmt)) |
2420 | { | |
2421 | gimple_set_def_ops (copy, NULL); | |
2422 | gimple_set_use_ops (copy, NULL); | |
726a989a RB |
2423 | } |
2424 | ||
2425 | if (gimple_has_mem_ops (stmt)) | |
2426 | { | |
5006671f RG |
2427 | gimple_set_vdef (copy, gimple_vdef (stmt)); |
2428 | gimple_set_vuse (copy, gimple_vuse (stmt)); | |
726a989a RB |
2429 | } |
2430 | ||
5006671f RG |
2431 | /* SSA operands need to be updated. */ |
2432 | gimple_set_modified (copy, true); | |
726a989a RB |
2433 | } |
2434 | ||
2435 | return copy; | |
2436 | } | |
2437 | ||
2438 | ||
2439 | /* Set the MODIFIED flag to MODIFIEDP, iff the gimple statement G has | |
2440 | a MODIFIED field. */ | |
2441 | ||
2442 | void | |
2443 | gimple_set_modified (gimple s, bool modifiedp) | |
2444 | { | |
2445 | if (gimple_has_ops (s)) | |
0f8c63cc | 2446 | s->gsbase.modified = (unsigned) modifiedp; |
726a989a RB |
2447 | } |
2448 | ||
2449 | ||
2450 | /* Return true if statement S has side-effects. We consider a | |
2451 | statement to have side effects if: | |
2452 | ||
2453 | - It is a GIMPLE_CALL not marked with ECF_PURE or ECF_CONST. | |
2454 | - Any of its operands are marked TREE_THIS_VOLATILE or TREE_SIDE_EFFECTS. */ | |
2455 | ||
2456 | bool | |
2457 | gimple_has_side_effects (const_gimple s) | |
2458 | { | |
b5b8b0ac AO |
2459 | if (is_gimple_debug (s)) |
2460 | return false; | |
2461 | ||
726a989a RB |
2462 | /* We don't have to scan the arguments to check for |
2463 | volatile arguments, though, at present, we still | |
2464 | do a scan to check for TREE_SIDE_EFFECTS. */ | |
2465 | if (gimple_has_volatile_ops (s)) | |
2466 | return true; | |
2467 | ||
179184e3 RG |
2468 | if (gimple_code (s) == GIMPLE_ASM |
2469 | && gimple_asm_volatile_p (s)) | |
2470 | return true; | |
2471 | ||
726a989a RB |
2472 | if (is_gimple_call (s)) |
2473 | { | |
723afc44 | 2474 | int flags = gimple_call_flags (s); |
726a989a | 2475 | |
723afc44 RG |
2476 | /* An infinite loop is considered a side effect. */ |
2477 | if (!(flags & (ECF_CONST | ECF_PURE)) | |
2478 | || (flags & ECF_LOOPING_CONST_OR_PURE)) | |
726a989a RB |
2479 | return true; |
2480 | ||
726a989a RB |
2481 | return false; |
2482 | } | |
726a989a RB |
2483 | |
2484 | return false; | |
2485 | } | |
2486 | ||
726a989a | 2487 | /* Helper for gimple_could_trap_p and gimple_assign_rhs_could_trap_p. |
e1fd038a SP |
2488 | Return true if S can trap. When INCLUDE_MEM is true, check whether |
2489 | the memory operations could trap. When INCLUDE_STORES is true and | |
2490 | S is a GIMPLE_ASSIGN, the LHS of the assignment is also checked. */ | |
726a989a | 2491 | |
e1fd038a SP |
2492 | bool |
2493 | gimple_could_trap_p_1 (gimple s, bool include_mem, bool include_stores) | |
726a989a | 2494 | { |
726a989a RB |
2495 | tree t, div = NULL_TREE; |
2496 | enum tree_code op; | |
2497 | ||
e1fd038a SP |
2498 | if (include_mem) |
2499 | { | |
2500 | unsigned i, start = (is_gimple_assign (s) && !include_stores) ? 1 : 0; | |
726a989a | 2501 | |
e1fd038a SP |
2502 | for (i = start; i < gimple_num_ops (s); i++) |
2503 | if (tree_could_trap_p (gimple_op (s, i))) | |
2504 | return true; | |
2505 | } | |
726a989a RB |
2506 | |
2507 | switch (gimple_code (s)) | |
2508 | { | |
2509 | case GIMPLE_ASM: | |
2510 | return gimple_asm_volatile_p (s); | |
2511 | ||
2512 | case GIMPLE_CALL: | |
2513 | t = gimple_call_fndecl (s); | |
2514 | /* Assume that calls to weak functions may trap. */ | |
2515 | if (!t || !DECL_P (t) || DECL_WEAK (t)) | |
2516 | return true; | |
2517 | return false; | |
2518 | ||
2519 | case GIMPLE_ASSIGN: | |
2520 | t = gimple_expr_type (s); | |
2521 | op = gimple_assign_rhs_code (s); | |
2522 | if (get_gimple_rhs_class (op) == GIMPLE_BINARY_RHS) | |
2523 | div = gimple_assign_rhs2 (s); | |
2524 | return (operation_could_trap_p (op, FLOAT_TYPE_P (t), | |
2525 | (INTEGRAL_TYPE_P (t) | |
2526 | && TYPE_OVERFLOW_TRAPS (t)), | |
2527 | div)); | |
2528 | ||
2529 | default: | |
2530 | break; | |
2531 | } | |
2532 | ||
2533 | return false; | |
726a989a RB |
2534 | } |
2535 | ||
726a989a RB |
2536 | /* Return true if statement S can trap. */ |
2537 | ||
2538 | bool | |
2539 | gimple_could_trap_p (gimple s) | |
2540 | { | |
e1fd038a | 2541 | return gimple_could_trap_p_1 (s, true, true); |
726a989a RB |
2542 | } |
2543 | ||
726a989a RB |
2544 | /* Return true if RHS of a GIMPLE_ASSIGN S can trap. */ |
2545 | ||
2546 | bool | |
2547 | gimple_assign_rhs_could_trap_p (gimple s) | |
2548 | { | |
2549 | gcc_assert (is_gimple_assign (s)); | |
e1fd038a | 2550 | return gimple_could_trap_p_1 (s, true, false); |
726a989a RB |
2551 | } |
2552 | ||
2553 | ||
2554 | /* Print debugging information for gimple stmts generated. */ | |
2555 | ||
2556 | void | |
2557 | dump_gimple_statistics (void) | |
2558 | { | |
2559 | #ifdef GATHER_STATISTICS | |
2560 | int i, total_tuples = 0, total_bytes = 0; | |
2561 | ||
2562 | fprintf (stderr, "\nGIMPLE statements\n"); | |
2563 | fprintf (stderr, "Kind Stmts Bytes\n"); | |
2564 | fprintf (stderr, "---------------------------------------\n"); | |
2565 | for (i = 0; i < (int) gimple_alloc_kind_all; ++i) | |
2566 | { | |
2567 | fprintf (stderr, "%-20s %7d %10d\n", gimple_alloc_kind_names[i], | |
2568 | gimple_alloc_counts[i], gimple_alloc_sizes[i]); | |
2569 | total_tuples += gimple_alloc_counts[i]; | |
2570 | total_bytes += gimple_alloc_sizes[i]; | |
2571 | } | |
2572 | fprintf (stderr, "---------------------------------------\n"); | |
2573 | fprintf (stderr, "%-20s %7d %10d\n", "Total", total_tuples, total_bytes); | |
2574 | fprintf (stderr, "---------------------------------------\n"); | |
2575 | #else | |
2576 | fprintf (stderr, "No gimple statistics\n"); | |
2577 | #endif | |
2578 | } | |
2579 | ||
2580 | ||
726a989a RB |
2581 | /* Return the number of operands needed on the RHS of a GIMPLE |
2582 | assignment for an expression with tree code CODE. */ | |
2583 | ||
2584 | unsigned | |
2585 | get_gimple_rhs_num_ops (enum tree_code code) | |
2586 | { | |
2587 | enum gimple_rhs_class rhs_class = get_gimple_rhs_class (code); | |
2588 | ||
2589 | if (rhs_class == GIMPLE_UNARY_RHS || rhs_class == GIMPLE_SINGLE_RHS) | |
2590 | return 1; | |
2591 | else if (rhs_class == GIMPLE_BINARY_RHS) | |
2592 | return 2; | |
0354c0c7 BS |
2593 | else if (rhs_class == GIMPLE_TERNARY_RHS) |
2594 | return 3; | |
726a989a RB |
2595 | else |
2596 | gcc_unreachable (); | |
2597 | } | |
2598 | ||
2599 | #define DEFTREECODE(SYM, STRING, TYPE, NARGS) \ | |
2600 | (unsigned char) \ | |
2601 | ((TYPE) == tcc_unary ? GIMPLE_UNARY_RHS \ | |
2602 | : ((TYPE) == tcc_binary \ | |
2603 | || (TYPE) == tcc_comparison) ? GIMPLE_BINARY_RHS \ | |
2604 | : ((TYPE) == tcc_constant \ | |
2605 | || (TYPE) == tcc_declaration \ | |
2606 | || (TYPE) == tcc_reference) ? GIMPLE_SINGLE_RHS \ | |
2607 | : ((SYM) == TRUTH_AND_EXPR \ | |
2608 | || (SYM) == TRUTH_OR_EXPR \ | |
2609 | || (SYM) == TRUTH_XOR_EXPR) ? GIMPLE_BINARY_RHS \ | |
2610 | : (SYM) == TRUTH_NOT_EXPR ? GIMPLE_UNARY_RHS \ | |
4e71066d RG |
2611 | : ((SYM) == COND_EXPR \ |
2612 | || (SYM) == WIDEN_MULT_PLUS_EXPR \ | |
16949072 | 2613 | || (SYM) == WIDEN_MULT_MINUS_EXPR \ |
f471fe72 RG |
2614 | || (SYM) == DOT_PROD_EXPR \ |
2615 | || (SYM) == REALIGN_LOAD_EXPR \ | |
4e71066d | 2616 | || (SYM) == VEC_COND_EXPR \ |
2205ed25 | 2617 | || (SYM) == VEC_PERM_EXPR \ |
16949072 | 2618 | || (SYM) == FMA_EXPR) ? GIMPLE_TERNARY_RHS \ |
4e71066d | 2619 | : ((SYM) == CONSTRUCTOR \ |
726a989a RB |
2620 | || (SYM) == OBJ_TYPE_REF \ |
2621 | || (SYM) == ASSERT_EXPR \ | |
2622 | || (SYM) == ADDR_EXPR \ | |
2623 | || (SYM) == WITH_SIZE_EXPR \ | |
4e71066d | 2624 | || (SYM) == SSA_NAME) ? GIMPLE_SINGLE_RHS \ |
726a989a RB |
2625 | : GIMPLE_INVALID_RHS), |
2626 | #define END_OF_BASE_TREE_CODES (unsigned char) GIMPLE_INVALID_RHS, | |
2627 | ||
2628 | const unsigned char gimple_rhs_class_table[] = { | |
2629 | #include "all-tree.def" | |
2630 | }; | |
2631 | ||
2632 | #undef DEFTREECODE | |
2633 | #undef END_OF_BASE_TREE_CODES | |
2634 | ||
2635 | /* For the definitive definition of GIMPLE, see doc/tree-ssa.texi. */ | |
2636 | ||
2637 | /* Validation of GIMPLE expressions. */ | |
2638 | ||
726a989a RB |
2639 | /* Return true if T is a valid LHS for a GIMPLE assignment expression. */ |
2640 | ||
2641 | bool | |
2642 | is_gimple_lvalue (tree t) | |
2643 | { | |
2644 | return (is_gimple_addressable (t) | |
2645 | || TREE_CODE (t) == WITH_SIZE_EXPR | |
2646 | /* These are complex lvalues, but don't have addresses, so they | |
2647 | go here. */ | |
2648 | || TREE_CODE (t) == BIT_FIELD_REF); | |
2649 | } | |
2650 | ||
2651 | /* Return true if T is a GIMPLE condition. */ | |
2652 | ||
2653 | bool | |
2654 | is_gimple_condexpr (tree t) | |
2655 | { | |
2656 | return (is_gimple_val (t) || (COMPARISON_CLASS_P (t) | |
f9613c9a | 2657 | && !tree_could_throw_p (t) |
726a989a RB |
2658 | && is_gimple_val (TREE_OPERAND (t, 0)) |
2659 | && is_gimple_val (TREE_OPERAND (t, 1)))); | |
2660 | } | |
2661 | ||
2662 | /* Return true if T is something whose address can be taken. */ | |
2663 | ||
2664 | bool | |
2665 | is_gimple_addressable (tree t) | |
2666 | { | |
70f34814 RG |
2667 | return (is_gimple_id (t) || handled_component_p (t) |
2668 | || TREE_CODE (t) == MEM_REF); | |
726a989a RB |
2669 | } |
2670 | ||
2671 | /* Return true if T is a valid gimple constant. */ | |
2672 | ||
2673 | bool | |
2674 | is_gimple_constant (const_tree t) | |
2675 | { | |
2676 | switch (TREE_CODE (t)) | |
2677 | { | |
2678 | case INTEGER_CST: | |
2679 | case REAL_CST: | |
2680 | case FIXED_CST: | |
2681 | case STRING_CST: | |
2682 | case COMPLEX_CST: | |
2683 | case VECTOR_CST: | |
2684 | return true; | |
2685 | ||
2686 | /* Vector constant constructors are gimple invariant. */ | |
2687 | case CONSTRUCTOR: | |
2688 | if (TREE_TYPE (t) && TREE_CODE (TREE_TYPE (t)) == VECTOR_TYPE) | |
2689 | return TREE_CONSTANT (t); | |
2690 | else | |
2691 | return false; | |
2692 | ||
2693 | default: | |
2694 | return false; | |
2695 | } | |
2696 | } | |
2697 | ||
2698 | /* Return true if T is a gimple address. */ | |
2699 | ||
2700 | bool | |
2701 | is_gimple_address (const_tree t) | |
2702 | { | |
2703 | tree op; | |
2704 | ||
2705 | if (TREE_CODE (t) != ADDR_EXPR) | |
2706 | return false; | |
2707 | ||
2708 | op = TREE_OPERAND (t, 0); | |
2709 | while (handled_component_p (op)) | |
2710 | { | |
2711 | if ((TREE_CODE (op) == ARRAY_REF | |
2712 | || TREE_CODE (op) == ARRAY_RANGE_REF) | |
2713 | && !is_gimple_val (TREE_OPERAND (op, 1))) | |
2714 | return false; | |
2715 | ||
2716 | op = TREE_OPERAND (op, 0); | |
2717 | } | |
2718 | ||
70f34814 | 2719 | if (CONSTANT_CLASS_P (op) || TREE_CODE (op) == MEM_REF) |
726a989a RB |
2720 | return true; |
2721 | ||
2722 | switch (TREE_CODE (op)) | |
2723 | { | |
2724 | case PARM_DECL: | |
2725 | case RESULT_DECL: | |
2726 | case LABEL_DECL: | |
2727 | case FUNCTION_DECL: | |
2728 | case VAR_DECL: | |
2729 | case CONST_DECL: | |
2730 | return true; | |
2731 | ||
2732 | default: | |
2733 | return false; | |
2734 | } | |
2735 | } | |
2736 | ||
00fc2333 JH |
2737 | /* Return true if T is a gimple invariant address. */ |
2738 | ||
2739 | bool | |
2740 | is_gimple_invariant_address (const_tree t) | |
2741 | { | |
2742 | const_tree op; | |
2743 | ||
2744 | if (TREE_CODE (t) != ADDR_EXPR) | |
2745 | return false; | |
2746 | ||
2747 | op = strip_invariant_refs (TREE_OPERAND (t, 0)); | |
70f34814 RG |
2748 | if (!op) |
2749 | return false; | |
00fc2333 | 2750 | |
70f34814 RG |
2751 | if (TREE_CODE (op) == MEM_REF) |
2752 | { | |
2753 | const_tree op0 = TREE_OPERAND (op, 0); | |
2754 | return (TREE_CODE (op0) == ADDR_EXPR | |
2755 | && (CONSTANT_CLASS_P (TREE_OPERAND (op0, 0)) | |
2756 | || decl_address_invariant_p (TREE_OPERAND (op0, 0)))); | |
2757 | } | |
2758 | ||
2759 | return CONSTANT_CLASS_P (op) || decl_address_invariant_p (op); | |
00fc2333 JH |
2760 | } |
2761 | ||
2762 | /* Return true if T is a gimple invariant address at IPA level | |
2763 | (so addresses of variables on stack are not allowed). */ | |
2764 | ||
2765 | bool | |
2766 | is_gimple_ip_invariant_address (const_tree t) | |
2767 | { | |
2768 | const_tree op; | |
2769 | ||
2770 | if (TREE_CODE (t) != ADDR_EXPR) | |
2771 | return false; | |
2772 | ||
2773 | op = strip_invariant_refs (TREE_OPERAND (t, 0)); | |
39cc8c3d MJ |
2774 | if (!op) |
2775 | return false; | |
2776 | ||
2777 | if (TREE_CODE (op) == MEM_REF) | |
2778 | { | |
2779 | const_tree op0 = TREE_OPERAND (op, 0); | |
2780 | return (TREE_CODE (op0) == ADDR_EXPR | |
2781 | && (CONSTANT_CLASS_P (TREE_OPERAND (op0, 0)) | |
2782 | || decl_address_ip_invariant_p (TREE_OPERAND (op0, 0)))); | |
2783 | } | |
00fc2333 | 2784 | |
39cc8c3d | 2785 | return CONSTANT_CLASS_P (op) || decl_address_ip_invariant_p (op); |
726a989a RB |
2786 | } |
2787 | ||
2788 | /* Return true if T is a GIMPLE minimal invariant. It's a restricted | |
2789 | form of function invariant. */ | |
2790 | ||
2791 | bool | |
2792 | is_gimple_min_invariant (const_tree t) | |
2793 | { | |
2794 | if (TREE_CODE (t) == ADDR_EXPR) | |
2795 | return is_gimple_invariant_address (t); | |
2796 | ||
2797 | return is_gimple_constant (t); | |
2798 | } | |
2799 | ||
00fc2333 JH |
2800 | /* Return true if T is a GIMPLE interprocedural invariant. It's a restricted |
2801 | form of gimple minimal invariant. */ | |
2802 | ||
2803 | bool | |
2804 | is_gimple_ip_invariant (const_tree t) | |
2805 | { | |
2806 | if (TREE_CODE (t) == ADDR_EXPR) | |
2807 | return is_gimple_ip_invariant_address (t); | |
2808 | ||
2809 | return is_gimple_constant (t); | |
2810 | } | |
2811 | ||
726a989a RB |
2812 | /* Return true if T is a variable. */ |
2813 | ||
2814 | bool | |
2815 | is_gimple_variable (tree t) | |
2816 | { | |
2817 | return (TREE_CODE (t) == VAR_DECL | |
2818 | || TREE_CODE (t) == PARM_DECL | |
2819 | || TREE_CODE (t) == RESULT_DECL | |
2820 | || TREE_CODE (t) == SSA_NAME); | |
2821 | } | |
2822 | ||
2823 | /* Return true if T is a GIMPLE identifier (something with an address). */ | |
2824 | ||
2825 | bool | |
2826 | is_gimple_id (tree t) | |
2827 | { | |
2828 | return (is_gimple_variable (t) | |
2829 | || TREE_CODE (t) == FUNCTION_DECL | |
2830 | || TREE_CODE (t) == LABEL_DECL | |
2831 | || TREE_CODE (t) == CONST_DECL | |
2832 | /* Allow string constants, since they are addressable. */ | |
2833 | || TREE_CODE (t) == STRING_CST); | |
2834 | } | |
2835 | ||
726a989a RB |
2836 | /* Return true if T is a non-aggregate register variable. */ |
2837 | ||
2838 | bool | |
2839 | is_gimple_reg (tree t) | |
2840 | { | |
2841 | if (TREE_CODE (t) == SSA_NAME) | |
2842 | t = SSA_NAME_VAR (t); | |
2843 | ||
726a989a RB |
2844 | if (!is_gimple_variable (t)) |
2845 | return false; | |
2846 | ||
2847 | if (!is_gimple_reg_type (TREE_TYPE (t))) | |
2848 | return false; | |
2849 | ||
2850 | /* A volatile decl is not acceptable because we can't reuse it as | |
2851 | needed. We need to copy it into a temp first. */ | |
2852 | if (TREE_THIS_VOLATILE (t)) | |
2853 | return false; | |
2854 | ||
2855 | /* We define "registers" as things that can be renamed as needed, | |
2856 | which with our infrastructure does not apply to memory. */ | |
2857 | if (needs_to_live_in_memory (t)) | |
2858 | return false; | |
2859 | ||
2860 | /* Hard register variables are an interesting case. For those that | |
2861 | are call-clobbered, we don't know where all the calls are, since | |
2862 | we don't (want to) take into account which operations will turn | |
2863 | into libcalls at the rtl level. For those that are call-saved, | |
2864 | we don't currently model the fact that calls may in fact change | |
2865 | global hard registers, nor do we examine ASM_CLOBBERS at the tree | |
2866 | level, and so miss variable changes that might imply. All around, | |
2867 | it seems safest to not do too much optimization with these at the | |
2868 | tree level at all. We'll have to rely on the rtl optimizers to | |
2869 | clean this up, as there we've got all the appropriate bits exposed. */ | |
2870 | if (TREE_CODE (t) == VAR_DECL && DECL_HARD_REGISTER (t)) | |
2871 | return false; | |
2872 | ||
4636b850 RG |
2873 | /* Complex and vector values must have been put into SSA-like form. |
2874 | That is, no assignments to the individual components. */ | |
2875 | if (TREE_CODE (TREE_TYPE (t)) == COMPLEX_TYPE | |
2876 | || TREE_CODE (TREE_TYPE (t)) == VECTOR_TYPE) | |
2877 | return DECL_GIMPLE_REG_P (t); | |
2878 | ||
726a989a RB |
2879 | return true; |
2880 | } | |
2881 | ||
2882 | ||
726a989a RB |
2883 | /* Return true if T is a GIMPLE rvalue, i.e. an identifier or a constant. */ |
2884 | ||
2885 | bool | |
2886 | is_gimple_val (tree t) | |
2887 | { | |
2888 | /* Make loads from volatiles and memory vars explicit. */ | |
2889 | if (is_gimple_variable (t) | |
2890 | && is_gimple_reg_type (TREE_TYPE (t)) | |
2891 | && !is_gimple_reg (t)) | |
2892 | return false; | |
2893 | ||
726a989a RB |
2894 | return (is_gimple_variable (t) || is_gimple_min_invariant (t)); |
2895 | } | |
2896 | ||
2897 | /* Similarly, but accept hard registers as inputs to asm statements. */ | |
2898 | ||
2899 | bool | |
2900 | is_gimple_asm_val (tree t) | |
2901 | { | |
2902 | if (TREE_CODE (t) == VAR_DECL && DECL_HARD_REGISTER (t)) | |
2903 | return true; | |
2904 | ||
2905 | return is_gimple_val (t); | |
2906 | } | |
2907 | ||
2908 | /* Return true if T is a GIMPLE minimal lvalue. */ | |
2909 | ||
2910 | bool | |
2911 | is_gimple_min_lval (tree t) | |
2912 | { | |
ba4d8f9d RG |
2913 | if (!(t = CONST_CAST_TREE (strip_invariant_refs (t)))) |
2914 | return false; | |
70f34814 | 2915 | return (is_gimple_id (t) || TREE_CODE (t) == MEM_REF); |
726a989a RB |
2916 | } |
2917 | ||
726a989a RB |
2918 | /* Return true if T is a valid function operand of a CALL_EXPR. */ |
2919 | ||
2920 | bool | |
2921 | is_gimple_call_addr (tree t) | |
2922 | { | |
2923 | return (TREE_CODE (t) == OBJ_TYPE_REF || is_gimple_val (t)); | |
2924 | } | |
2925 | ||
70f34814 RG |
2926 | /* Return true if T is a valid address operand of a MEM_REF. */ |
2927 | ||
2928 | bool | |
2929 | is_gimple_mem_ref_addr (tree t) | |
2930 | { | |
2931 | return (is_gimple_reg (t) | |
2932 | || TREE_CODE (t) == INTEGER_CST | |
2933 | || (TREE_CODE (t) == ADDR_EXPR | |
2934 | && (CONSTANT_CLASS_P (TREE_OPERAND (t, 0)) | |
2935 | || decl_address_invariant_p (TREE_OPERAND (t, 0))))); | |
2936 | } | |
2937 | ||
726a989a RB |
2938 | |
2939 | /* Given a memory reference expression T, return its base address. | |
2940 | The base address of a memory reference expression is the main | |
2941 | object being referenced. For instance, the base address for | |
2942 | 'array[i].fld[j]' is 'array'. You can think of this as stripping | |
2943 | away the offset part from a memory address. | |
2944 | ||
2945 | This function calls handled_component_p to strip away all the inner | |
2946 | parts of the memory reference until it reaches the base object. */ | |
2947 | ||
2948 | tree | |
2949 | get_base_address (tree t) | |
2950 | { | |
2951 | while (handled_component_p (t)) | |
2952 | t = TREE_OPERAND (t, 0); | |
b8698a0f | 2953 | |
4d948885 RG |
2954 | if ((TREE_CODE (t) == MEM_REF |
2955 | || TREE_CODE (t) == TARGET_MEM_REF) | |
70f34814 RG |
2956 | && TREE_CODE (TREE_OPERAND (t, 0)) == ADDR_EXPR) |
2957 | t = TREE_OPERAND (TREE_OPERAND (t, 0), 0); | |
2958 | ||
b3b9f3d0 JH |
2959 | if (TREE_CODE (t) == SSA_NAME |
2960 | || DECL_P (t) | |
726a989a RB |
2961 | || TREE_CODE (t) == STRING_CST |
2962 | || TREE_CODE (t) == CONSTRUCTOR | |
70f34814 | 2963 | || INDIRECT_REF_P (t) |
4d948885 RG |
2964 | || TREE_CODE (t) == MEM_REF |
2965 | || TREE_CODE (t) == TARGET_MEM_REF) | |
726a989a RB |
2966 | return t; |
2967 | else | |
2968 | return NULL_TREE; | |
2969 | } | |
2970 | ||
2971 | void | |
2972 | recalculate_side_effects (tree t) | |
2973 | { | |
2974 | enum tree_code code = TREE_CODE (t); | |
2975 | int len = TREE_OPERAND_LENGTH (t); | |
2976 | int i; | |
2977 | ||
2978 | switch (TREE_CODE_CLASS (code)) | |
2979 | { | |
2980 | case tcc_expression: | |
2981 | switch (code) | |
2982 | { | |
2983 | case INIT_EXPR: | |
2984 | case MODIFY_EXPR: | |
2985 | case VA_ARG_EXPR: | |
2986 | case PREDECREMENT_EXPR: | |
2987 | case PREINCREMENT_EXPR: | |
2988 | case POSTDECREMENT_EXPR: | |
2989 | case POSTINCREMENT_EXPR: | |
2990 | /* All of these have side-effects, no matter what their | |
2991 | operands are. */ | |
2992 | return; | |
2993 | ||
2994 | default: | |
2995 | break; | |
2996 | } | |
2997 | /* Fall through. */ | |
2998 | ||
2999 | case tcc_comparison: /* a comparison expression */ | |
3000 | case tcc_unary: /* a unary arithmetic expression */ | |
3001 | case tcc_binary: /* a binary arithmetic expression */ | |
3002 | case tcc_reference: /* a reference */ | |
3003 | case tcc_vl_exp: /* a function call */ | |
3004 | TREE_SIDE_EFFECTS (t) = TREE_THIS_VOLATILE (t); | |
3005 | for (i = 0; i < len; ++i) | |
3006 | { | |
3007 | tree op = TREE_OPERAND (t, i); | |
3008 | if (op && TREE_SIDE_EFFECTS (op)) | |
3009 | TREE_SIDE_EFFECTS (t) = 1; | |
3010 | } | |
3011 | break; | |
3012 | ||
13f95bdb EB |
3013 | case tcc_constant: |
3014 | /* No side-effects. */ | |
3015 | return; | |
3016 | ||
726a989a | 3017 | default: |
726a989a RB |
3018 | gcc_unreachable (); |
3019 | } | |
3020 | } | |
3021 | ||
3022 | /* Canonicalize a tree T for use in a COND_EXPR as conditional. Returns | |
3023 | a canonicalized tree that is valid for a COND_EXPR or NULL_TREE, if | |
3024 | we failed to create one. */ | |
3025 | ||
3026 | tree | |
3027 | canonicalize_cond_expr_cond (tree t) | |
3028 | { | |
b66a1bac RG |
3029 | /* Strip conversions around boolean operations. */ |
3030 | if (CONVERT_EXPR_P (t) | |
9b80d091 KT |
3031 | && (truth_value_p (TREE_CODE (TREE_OPERAND (t, 0))) |
3032 | || TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) | |
3033 | == BOOLEAN_TYPE)) | |
b66a1bac RG |
3034 | t = TREE_OPERAND (t, 0); |
3035 | ||
726a989a | 3036 | /* For !x use x == 0. */ |
12430896 | 3037 | if (TREE_CODE (t) == TRUTH_NOT_EXPR) |
726a989a RB |
3038 | { |
3039 | tree top0 = TREE_OPERAND (t, 0); | |
3040 | t = build2 (EQ_EXPR, TREE_TYPE (t), | |
3041 | top0, build_int_cst (TREE_TYPE (top0), 0)); | |
3042 | } | |
3043 | /* For cmp ? 1 : 0 use cmp. */ | |
3044 | else if (TREE_CODE (t) == COND_EXPR | |
3045 | && COMPARISON_CLASS_P (TREE_OPERAND (t, 0)) | |
3046 | && integer_onep (TREE_OPERAND (t, 1)) | |
3047 | && integer_zerop (TREE_OPERAND (t, 2))) | |
3048 | { | |
3049 | tree top0 = TREE_OPERAND (t, 0); | |
3050 | t = build2 (TREE_CODE (top0), TREE_TYPE (t), | |
3051 | TREE_OPERAND (top0, 0), TREE_OPERAND (top0, 1)); | |
3052 | } | |
3053 | ||
3054 | if (is_gimple_condexpr (t)) | |
3055 | return t; | |
3056 | ||
3057 | return NULL_TREE; | |
3058 | } | |
3059 | ||
e6c99067 DN |
3060 | /* Build a GIMPLE_CALL identical to STMT but skipping the arguments in |
3061 | the positions marked by the set ARGS_TO_SKIP. */ | |
3062 | ||
c6f7cfc1 | 3063 | gimple |
5c0466b5 | 3064 | gimple_call_copy_skip_args (gimple stmt, bitmap args_to_skip) |
c6f7cfc1 JH |
3065 | { |
3066 | int i; | |
c6f7cfc1 JH |
3067 | int nargs = gimple_call_num_args (stmt); |
3068 | VEC(tree, heap) *vargs = VEC_alloc (tree, heap, nargs); | |
3069 | gimple new_stmt; | |
3070 | ||
3071 | for (i = 0; i < nargs; i++) | |
3072 | if (!bitmap_bit_p (args_to_skip, i)) | |
3073 | VEC_quick_push (tree, vargs, gimple_call_arg (stmt, i)); | |
3074 | ||
25583c4f RS |
3075 | if (gimple_call_internal_p (stmt)) |
3076 | new_stmt = gimple_build_call_internal_vec (gimple_call_internal_fn (stmt), | |
3077 | vargs); | |
3078 | else | |
3079 | new_stmt = gimple_build_call_vec (gimple_call_fn (stmt), vargs); | |
c6f7cfc1 JH |
3080 | VEC_free (tree, heap, vargs); |
3081 | if (gimple_call_lhs (stmt)) | |
3082 | gimple_call_set_lhs (new_stmt, gimple_call_lhs (stmt)); | |
3083 | ||
5006671f RG |
3084 | gimple_set_vuse (new_stmt, gimple_vuse (stmt)); |
3085 | gimple_set_vdef (new_stmt, gimple_vdef (stmt)); | |
3086 | ||
c6f7cfc1 JH |
3087 | gimple_set_block (new_stmt, gimple_block (stmt)); |
3088 | if (gimple_has_location (stmt)) | |
3089 | gimple_set_location (new_stmt, gimple_location (stmt)); | |
8d2adc24 | 3090 | gimple_call_copy_flags (new_stmt, stmt); |
c6f7cfc1 | 3091 | gimple_call_set_chain (new_stmt, gimple_call_chain (stmt)); |
5006671f RG |
3092 | |
3093 | gimple_set_modified (new_stmt, true); | |
3094 | ||
c6f7cfc1 JH |
3095 | return new_stmt; |
3096 | } | |
3097 | ||
5006671f | 3098 | |
0ca8de87 RG |
3099 | enum gtc_mode { GTC_MERGE = 0, GTC_DIAG = 1 }; |
3100 | ||
b5e04de5 | 3101 | static hashval_t gimple_type_hash (const void *); |
d7f09764 DN |
3102 | |
3103 | /* Structure used to maintain a cache of some type pairs compared by | |
3104 | gimple_types_compatible_p when comparing aggregate types. There are | |
c4fcd06a | 3105 | three possible values for SAME_P: |
d7f09764 DN |
3106 | |
3107 | -2: The pair (T1, T2) has just been inserted in the table. | |
d7f09764 DN |
3108 | 0: T1 and T2 are different types. |
3109 | 1: T1 and T2 are the same type. | |
3110 | ||
c4fcd06a RG |
3111 | The two elements in the SAME_P array are indexed by the comparison |
3112 | mode gtc_mode. */ | |
3113 | ||
d7f09764 DN |
3114 | struct type_pair_d |
3115 | { | |
88ca1146 RG |
3116 | unsigned int uid1; |
3117 | unsigned int uid2; | |
c4fcd06a | 3118 | signed char same_p[2]; |
d7f09764 DN |
3119 | }; |
3120 | typedef struct type_pair_d *type_pair_t; | |
d4398a43 RG |
3121 | DEF_VEC_P(type_pair_t); |
3122 | DEF_VEC_ALLOC_P(type_pair_t,heap); | |
3123 | ||
a30726a4 JH |
3124 | #define GIMPLE_TYPE_PAIR_SIZE 16381 |
3125 | struct type_pair_d *type_pair_cache; | |
d7f09764 | 3126 | |
d7f09764 DN |
3127 | |
3128 | /* Lookup the pair of types T1 and T2 in *VISITED_P. Insert a new | |
3129 | entry if none existed. */ | |
3130 | ||
a30726a4 JH |
3131 | static inline type_pair_t |
3132 | lookup_type_pair (tree t1, tree t2) | |
d7f09764 | 3133 | { |
a30726a4 JH |
3134 | unsigned int index; |
3135 | unsigned int uid1, uid2; | |
d7f09764 | 3136 | |
a30726a4 JH |
3137 | if (type_pair_cache == NULL) |
3138 | type_pair_cache = XCNEWVEC (struct type_pair_d, GIMPLE_TYPE_PAIR_SIZE); | |
d7f09764 | 3139 | |
4fc07af9 JH |
3140 | if (TYPE_UID (t1) < TYPE_UID (t2)) |
3141 | { | |
a30726a4 JH |
3142 | uid1 = TYPE_UID (t1); |
3143 | uid2 = TYPE_UID (t2); | |
4fc07af9 JH |
3144 | } |
3145 | else | |
3146 | { | |
a30726a4 JH |
3147 | uid1 = TYPE_UID (t2); |
3148 | uid2 = TYPE_UID (t1); | |
4fc07af9 | 3149 | } |
a30726a4 | 3150 | gcc_checking_assert (uid1 != uid2); |
d7f09764 | 3151 | |
a30726a4 JH |
3152 | /* iterative_hash_hashval_t imply an function calls. |
3153 | We know that UIDS are in limited range. */ | |
3154 | index = ((((unsigned HOST_WIDE_INT)uid1 << HOST_BITS_PER_WIDE_INT / 2) + uid2) | |
3155 | % GIMPLE_TYPE_PAIR_SIZE); | |
3156 | if (type_pair_cache [index].uid1 == uid1 | |
3157 | && type_pair_cache [index].uid2 == uid2) | |
3158 | return &type_pair_cache[index]; | |
d7f09764 | 3159 | |
a30726a4 JH |
3160 | type_pair_cache [index].uid1 = uid1; |
3161 | type_pair_cache [index].uid2 = uid2; | |
3162 | type_pair_cache [index].same_p[0] = -2; | |
3163 | type_pair_cache [index].same_p[1] = -2; | |
3164 | ||
3165 | return &type_pair_cache[index]; | |
d7f09764 DN |
3166 | } |
3167 | ||
d4398a43 RG |
3168 | /* Per pointer state for the SCC finding. The on_sccstack flag |
3169 | is not strictly required, it is true when there is no hash value | |
3170 | recorded for the type and false otherwise. But querying that | |
3171 | is slower. */ | |
3172 | ||
3173 | struct sccs | |
3174 | { | |
3175 | unsigned int dfsnum; | |
3176 | unsigned int low; | |
3177 | bool on_sccstack; | |
3178 | union { | |
3179 | hashval_t hash; | |
c4fcd06a | 3180 | signed char same_p; |
d4398a43 RG |
3181 | } u; |
3182 | }; | |
3183 | ||
3184 | static unsigned int next_dfs_num; | |
3185 | static unsigned int gtc_next_dfs_num; | |
d7f09764 | 3186 | |
4490cae6 RG |
3187 | |
3188 | /* GIMPLE type merging cache. A direct-mapped cache based on TYPE_UID. */ | |
3189 | ||
3190 | typedef struct GTY(()) gimple_type_leader_entry_s { | |
3191 | tree type; | |
3192 | tree leader; | |
3193 | } gimple_type_leader_entry; | |
3194 | ||
3195 | #define GIMPLE_TYPE_LEADER_SIZE 16381 | |
e89964e3 MM |
3196 | static GTY((deletable, length("GIMPLE_TYPE_LEADER_SIZE"))) |
3197 | gimple_type_leader_entry *gimple_type_leader; | |
4490cae6 RG |
3198 | |
3199 | /* Lookup an existing leader for T and return it or NULL_TREE, if | |
3200 | there is none in the cache. */ | |
3201 | ||
4fc07af9 | 3202 | static inline tree |
4490cae6 RG |
3203 | gimple_lookup_type_leader (tree t) |
3204 | { | |
3205 | gimple_type_leader_entry *leader; | |
3206 | ||
3207 | if (!gimple_type_leader) | |
3208 | return NULL_TREE; | |
3209 | ||
3210 | leader = &gimple_type_leader[TYPE_UID (t) % GIMPLE_TYPE_LEADER_SIZE]; | |
3211 | if (leader->type != t) | |
3212 | return NULL_TREE; | |
3213 | ||
3214 | return leader->leader; | |
3215 | } | |
3216 | ||
77785f4f RG |
3217 | /* Return true if T1 and T2 have the same name. If FOR_COMPLETION_P is |
3218 | true then if any type has no name return false, otherwise return | |
3219 | true if both types have no names. */ | |
d7f09764 DN |
3220 | |
3221 | static bool | |
6a20ce76 | 3222 | compare_type_names_p (tree t1, tree t2) |
d7f09764 DN |
3223 | { |
3224 | tree name1 = TYPE_NAME (t1); | |
3225 | tree name2 = TYPE_NAME (t2); | |
3226 | ||
ee7a54c5 RG |
3227 | if ((name1 != NULL_TREE) != (name2 != NULL_TREE)) |
3228 | return false; | |
3229 | ||
3230 | if (name1 == NULL_TREE) | |
3231 | return true; | |
3232 | ||
3233 | /* Either both should be a TYPE_DECL or both an IDENTIFIER_NODE. */ | |
3234 | if (TREE_CODE (name1) != TREE_CODE (name2)) | |
3235 | return false; | |
3236 | ||
3237 | if (TREE_CODE (name1) == TYPE_DECL) | |
6a20ce76 RG |
3238 | name1 = DECL_NAME (name1); |
3239 | gcc_checking_assert (!name1 || TREE_CODE (name1) == IDENTIFIER_NODE); | |
d7f09764 | 3240 | |
ee7a54c5 | 3241 | if (TREE_CODE (name2) == TYPE_DECL) |
6a20ce76 RG |
3242 | name2 = DECL_NAME (name2); |
3243 | gcc_checking_assert (!name2 || TREE_CODE (name2) == IDENTIFIER_NODE); | |
d7f09764 DN |
3244 | |
3245 | /* Identifiers can be compared with pointer equality rather | |
3246 | than a string comparison. */ | |
3247 | if (name1 == name2) | |
3248 | return true; | |
3249 | ||
3250 | return false; | |
3251 | } | |
3252 | ||
d025732d EB |
3253 | /* Return true if the field decls F1 and F2 are at the same offset. |
3254 | ||
91f2fae8 | 3255 | This is intended to be used on GIMPLE types only. */ |
d7f09764 | 3256 | |
1e4bc4eb | 3257 | bool |
d025732d | 3258 | gimple_compare_field_offset (tree f1, tree f2) |
d7f09764 DN |
3259 | { |
3260 | if (DECL_OFFSET_ALIGN (f1) == DECL_OFFSET_ALIGN (f2)) | |
d025732d EB |
3261 | { |
3262 | tree offset1 = DECL_FIELD_OFFSET (f1); | |
3263 | tree offset2 = DECL_FIELD_OFFSET (f2); | |
3264 | return ((offset1 == offset2 | |
3265 | /* Once gimplification is done, self-referential offsets are | |
3266 | instantiated as operand #2 of the COMPONENT_REF built for | |
3267 | each access and reset. Therefore, they are not relevant | |
3268 | anymore and fields are interchangeable provided that they | |
3269 | represent the same access. */ | |
3270 | || (TREE_CODE (offset1) == PLACEHOLDER_EXPR | |
3271 | && TREE_CODE (offset2) == PLACEHOLDER_EXPR | |
3272 | && (DECL_SIZE (f1) == DECL_SIZE (f2) | |
3273 | || (TREE_CODE (DECL_SIZE (f1)) == PLACEHOLDER_EXPR | |
3274 | && TREE_CODE (DECL_SIZE (f2)) == PLACEHOLDER_EXPR) | |
3275 | || operand_equal_p (DECL_SIZE (f1), DECL_SIZE (f2), 0)) | |
3276 | && DECL_ALIGN (f1) == DECL_ALIGN (f2)) | |
3277 | || operand_equal_p (offset1, offset2, 0)) | |
3278 | && tree_int_cst_equal (DECL_FIELD_BIT_OFFSET (f1), | |
3279 | DECL_FIELD_BIT_OFFSET (f2))); | |
3280 | } | |
d7f09764 DN |
3281 | |
3282 | /* Fortran and C do not always agree on what DECL_OFFSET_ALIGN | |
3283 | should be, so handle differing ones specially by decomposing | |
3284 | the offset into a byte and bit offset manually. */ | |
3285 | if (host_integerp (DECL_FIELD_OFFSET (f1), 0) | |
3286 | && host_integerp (DECL_FIELD_OFFSET (f2), 0)) | |
3287 | { | |
3288 | unsigned HOST_WIDE_INT byte_offset1, byte_offset2; | |
3289 | unsigned HOST_WIDE_INT bit_offset1, bit_offset2; | |
3290 | bit_offset1 = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f1)); | |
3291 | byte_offset1 = (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f1)) | |
3292 | + bit_offset1 / BITS_PER_UNIT); | |
3293 | bit_offset2 = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f2)); | |
3294 | byte_offset2 = (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f2)) | |
3295 | + bit_offset2 / BITS_PER_UNIT); | |
3296 | if (byte_offset1 != byte_offset2) | |
3297 | return false; | |
3298 | return bit_offset1 % BITS_PER_UNIT == bit_offset2 % BITS_PER_UNIT; | |
3299 | } | |
3300 | ||
3301 | return false; | |
3302 | } | |
3303 | ||
d4398a43 | 3304 | static bool |
b5e04de5 | 3305 | gimple_types_compatible_p_1 (tree, tree, type_pair_t, |
c4fcd06a | 3306 | VEC(type_pair_t, heap) **, |
d4398a43 | 3307 | struct pointer_map_t *, struct obstack *); |
d7f09764 | 3308 | |
d4398a43 RG |
3309 | /* DFS visit the edge from the callers type pair with state *STATE to |
3310 | the pair T1, T2 while operating in FOR_MERGING_P mode. | |
3311 | Update the merging status if it is not part of the SCC containing the | |
3312 | callers pair and return it. | |
3313 | SCCSTACK, SCCSTATE and SCCSTATE_OBSTACK are state for the DFS walk done. */ | |
3314 | ||
3315 | static bool | |
b5e04de5 | 3316 | gtc_visit (tree t1, tree t2, |
d4398a43 RG |
3317 | struct sccs *state, |
3318 | VEC(type_pair_t, heap) **sccstack, | |
3319 | struct pointer_map_t *sccstate, | |
3320 | struct obstack *sccstate_obstack) | |
d7f09764 | 3321 | { |
d4398a43 RG |
3322 | struct sccs *cstate = NULL; |
3323 | type_pair_t p; | |
3324 | void **slot; | |
b5e04de5 | 3325 | tree leader1, leader2; |
d7f09764 DN |
3326 | |
3327 | /* Check first for the obvious case of pointer identity. */ | |
3328 | if (t1 == t2) | |
d4398a43 | 3329 | return true; |
d7f09764 DN |
3330 | |
3331 | /* Check that we have two types to compare. */ | |
3332 | if (t1 == NULL_TREE || t2 == NULL_TREE) | |
d4398a43 | 3333 | return false; |
d7f09764 DN |
3334 | |
3335 | /* Can't be the same type if the types don't have the same code. */ | |
3336 | if (TREE_CODE (t1) != TREE_CODE (t2)) | |
d4398a43 | 3337 | return false; |
b0cc341f RG |
3338 | |
3339 | /* Can't be the same type if they have different CV qualifiers. */ | |
3340 | if (TYPE_QUALS (t1) != TYPE_QUALS (t2)) | |
d4398a43 | 3341 | return false; |
d7f09764 | 3342 | |
61332f77 RG |
3343 | if (TREE_ADDRESSABLE (t1) != TREE_ADDRESSABLE (t2)) |
3344 | return false; | |
3345 | ||
3346 | /* Void types and nullptr types are always the same. */ | |
3347 | if (TREE_CODE (t1) == VOID_TYPE | |
3348 | || TREE_CODE (t1) == NULLPTR_TYPE) | |
d4398a43 | 3349 | return true; |
d7f09764 | 3350 | |
61332f77 RG |
3351 | /* Can't be the same type if they have different alignment or mode. */ |
3352 | if (TYPE_ALIGN (t1) != TYPE_ALIGN (t2) | |
3353 | || TYPE_MODE (t1) != TYPE_MODE (t2)) | |
3354 | return false; | |
3355 | ||
c9549072 | 3356 | /* Do some simple checks before doing three hashtable queries. */ |
b0cc341f RG |
3357 | if (INTEGRAL_TYPE_P (t1) |
3358 | || SCALAR_FLOAT_TYPE_P (t1) | |
3359 | || FIXED_POINT_TYPE_P (t1) | |
3360 | || TREE_CODE (t1) == VECTOR_TYPE | |
b23dc2c0 | 3361 | || TREE_CODE (t1) == COMPLEX_TYPE |
61332f77 RG |
3362 | || TREE_CODE (t1) == OFFSET_TYPE |
3363 | || POINTER_TYPE_P (t1)) | |
b0cc341f | 3364 | { |
61332f77 RG |
3365 | /* Can't be the same type if they have different sign or precision. */ |
3366 | if (TYPE_PRECISION (t1) != TYPE_PRECISION (t2) | |
b0cc341f | 3367 | || TYPE_UNSIGNED (t1) != TYPE_UNSIGNED (t2)) |
d4398a43 | 3368 | return false; |
b0cc341f RG |
3369 | |
3370 | if (TREE_CODE (t1) == INTEGER_TYPE | |
3371 | && (TYPE_IS_SIZETYPE (t1) != TYPE_IS_SIZETYPE (t2) | |
3372 | || TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2))) | |
d4398a43 | 3373 | return false; |
b0cc341f RG |
3374 | |
3375 | /* That's all we need to check for float and fixed-point types. */ | |
3376 | if (SCALAR_FLOAT_TYPE_P (t1) | |
3377 | || FIXED_POINT_TYPE_P (t1)) | |
d4398a43 | 3378 | return true; |
b0cc341f | 3379 | |
61332f77 | 3380 | /* For other types fall thru to more complex checks. */ |
b0cc341f | 3381 | } |
d7f09764 | 3382 | |
61332f77 RG |
3383 | /* If the types have been previously registered and found equal |
3384 | they still are. */ | |
3385 | leader1 = gimple_lookup_type_leader (t1); | |
3386 | leader2 = gimple_lookup_type_leader (t2); | |
3387 | if (leader1 == t2 | |
3388 | || t1 == leader2 | |
3389 | || (leader1 && leader1 == leader2)) | |
3390 | return true; | |
c9549072 | 3391 | |
d7f09764 DN |
3392 | /* If the hash values of t1 and t2 are different the types can't |
3393 | possibly be the same. This helps keeping the type-pair hashtable | |
3394 | small, only tracking comparisons for hash collisions. */ | |
b5e04de5 | 3395 | if (gimple_type_hash (t1) != gimple_type_hash (t2)) |
d4398a43 | 3396 | return false; |
d7f09764 | 3397 | |
d4398a43 | 3398 | /* Allocate a new cache entry for this comparison. */ |
a30726a4 | 3399 | p = lookup_type_pair (t1, t2); |
b5e04de5 | 3400 | if (p->same_p[GTC_MERGE] == 0 || p->same_p[GTC_MERGE] == 1) |
d7f09764 DN |
3401 | { |
3402 | /* We have already decided whether T1 and T2 are the | |
3403 | same, return the cached result. */ | |
b5e04de5 | 3404 | return p->same_p[GTC_MERGE] == 1; |
d7f09764 | 3405 | } |
d4398a43 | 3406 | |
d4398a43 RG |
3407 | if ((slot = pointer_map_contains (sccstate, p)) != NULL) |
3408 | cstate = (struct sccs *)*slot; | |
67701d1d | 3409 | /* Not yet visited. DFS recurse. */ |
d4398a43 | 3410 | if (!cstate) |
d7f09764 | 3411 | { |
b5e04de5 | 3412 | gimple_types_compatible_p_1 (t1, t2, p, |
67701d1d RG |
3413 | sccstack, sccstate, sccstate_obstack); |
3414 | cstate = (struct sccs *)* pointer_map_contains (sccstate, p); | |
d4398a43 | 3415 | state->low = MIN (state->low, cstate->low); |
d7f09764 | 3416 | } |
67701d1d | 3417 | /* If the type is still on the SCC stack adjust the parents low. */ |
d4398a43 RG |
3418 | if (cstate->dfsnum < state->dfsnum |
3419 | && cstate->on_sccstack) | |
3420 | state->low = MIN (cstate->dfsnum, state->low); | |
d7f09764 | 3421 | |
67701d1d RG |
3422 | /* Return the current lattice value. We start with an equality |
3423 | assumption so types part of a SCC will be optimistically | |
3424 | treated equal unless proven otherwise. */ | |
3425 | return cstate->u.same_p; | |
d4398a43 RG |
3426 | } |
3427 | ||
3428 | /* Worker for gimple_types_compatible. | |
3429 | SCCSTACK, SCCSTATE and SCCSTATE_OBSTACK are state for the DFS walk done. */ | |
3430 | ||
3431 | static bool | |
b5e04de5 | 3432 | gimple_types_compatible_p_1 (tree t1, tree t2, type_pair_t p, |
d4398a43 RG |
3433 | VEC(type_pair_t, heap) **sccstack, |
3434 | struct pointer_map_t *sccstate, | |
3435 | struct obstack *sccstate_obstack) | |
3436 | { | |
d4398a43 RG |
3437 | struct sccs *state; |
3438 | ||
b5e04de5 | 3439 | gcc_assert (p->same_p[GTC_MERGE] == -2); |
d7f09764 | 3440 | |
d4398a43 RG |
3441 | state = XOBNEW (sccstate_obstack, struct sccs); |
3442 | *pointer_map_insert (sccstate, p) = state; | |
3443 | ||
3444 | VEC_safe_push (type_pair_t, heap, *sccstack, p); | |
3445 | state->dfsnum = gtc_next_dfs_num++; | |
3446 | state->low = state->dfsnum; | |
3447 | state->on_sccstack = true; | |
67701d1d RG |
3448 | /* Start with an equality assumption. As we DFS recurse into child |
3449 | SCCs this assumption may get revisited. */ | |
3450 | state->u.same_p = 1; | |
d7f09764 | 3451 | |
e1caba18 | 3452 | /* The struct tags shall compare equal. */ |
6a20ce76 | 3453 | if (!compare_type_names_p (t1, t2)) |
e1caba18 RG |
3454 | goto different_types; |
3455 | ||
ee7a54c5 RG |
3456 | /* We may not merge typedef types to the same type in different |
3457 | contexts. */ | |
3458 | if (TYPE_NAME (t1) | |
3459 | && TREE_CODE (TYPE_NAME (t1)) == TYPE_DECL | |
3460 | && DECL_CONTEXT (TYPE_NAME (t1)) | |
3461 | && TYPE_P (DECL_CONTEXT (TYPE_NAME (t1)))) | |
3462 | { | |
3463 | if (!gtc_visit (DECL_CONTEXT (TYPE_NAME (t1)), | |
3464 | DECL_CONTEXT (TYPE_NAME (t2)), | |
3465 | state, sccstack, sccstate, sccstate_obstack)) | |
3466 | goto different_types; | |
3467 | } | |
3468 | ||
d7f09764 DN |
3469 | /* If their attributes are not the same they can't be the same type. */ |
3470 | if (!attribute_list_equal (TYPE_ATTRIBUTES (t1), TYPE_ATTRIBUTES (t2))) | |
3471 | goto different_types; | |
3472 | ||
d7f09764 DN |
3473 | /* Do type-specific comparisons. */ |
3474 | switch (TREE_CODE (t1)) | |
3475 | { | |
d4398a43 RG |
3476 | case VECTOR_TYPE: |
3477 | case COMPLEX_TYPE: | |
b5e04de5 | 3478 | if (!gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
d4398a43 RG |
3479 | state, sccstack, sccstate, sccstate_obstack)) |
3480 | goto different_types; | |
3481 | goto same_types; | |
3482 | ||
d7f09764 DN |
3483 | case ARRAY_TYPE: |
3484 | /* Array types are the same if the element types are the same and | |
3485 | the number of elements are the same. */ | |
b5e04de5 | 3486 | if (!gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
d4398a43 | 3487 | state, sccstack, sccstate, sccstate_obstack) |
b0cc341f RG |
3488 | || TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2) |
3489 | || TYPE_NONALIASED_COMPONENT (t1) != TYPE_NONALIASED_COMPONENT (t2)) | |
d7f09764 DN |
3490 | goto different_types; |
3491 | else | |
3492 | { | |
3493 | tree i1 = TYPE_DOMAIN (t1); | |
3494 | tree i2 = TYPE_DOMAIN (t2); | |
3495 | ||
3496 | /* For an incomplete external array, the type domain can be | |
3497 | NULL_TREE. Check this condition also. */ | |
3498 | if (i1 == NULL_TREE && i2 == NULL_TREE) | |
3499 | goto same_types; | |
3500 | else if (i1 == NULL_TREE || i2 == NULL_TREE) | |
3501 | goto different_types; | |
3502 | /* If for a complete array type the possibly gimplified sizes | |
3503 | are different the types are different. */ | |
3504 | else if (((TYPE_SIZE (i1) != NULL) ^ (TYPE_SIZE (i2) != NULL)) | |
3505 | || (TYPE_SIZE (i1) | |
3506 | && TYPE_SIZE (i2) | |
3507 | && !operand_equal_p (TYPE_SIZE (i1), TYPE_SIZE (i2), 0))) | |
3508 | goto different_types; | |
3509 | else | |
3510 | { | |
3511 | tree min1 = TYPE_MIN_VALUE (i1); | |
3512 | tree min2 = TYPE_MIN_VALUE (i2); | |
3513 | tree max1 = TYPE_MAX_VALUE (i1); | |
3514 | tree max2 = TYPE_MAX_VALUE (i2); | |
3515 | ||
3516 | /* The minimum/maximum values have to be the same. */ | |
3517 | if ((min1 == min2 | |
f56000ed EB |
3518 | || (min1 && min2 |
3519 | && ((TREE_CODE (min1) == PLACEHOLDER_EXPR | |
3520 | && TREE_CODE (min2) == PLACEHOLDER_EXPR) | |
3521 | || operand_equal_p (min1, min2, 0)))) | |
d7f09764 | 3522 | && (max1 == max2 |
f56000ed EB |
3523 | || (max1 && max2 |
3524 | && ((TREE_CODE (max1) == PLACEHOLDER_EXPR | |
3525 | && TREE_CODE (max2) == PLACEHOLDER_EXPR) | |
3526 | || operand_equal_p (max1, max2, 0))))) | |
d7f09764 DN |
3527 | goto same_types; |
3528 | else | |
3529 | goto different_types; | |
3530 | } | |
3531 | } | |
3532 | ||
3533 | case METHOD_TYPE: | |
3534 | /* Method types should belong to the same class. */ | |
d4398a43 | 3535 | if (!gtc_visit (TYPE_METHOD_BASETYPE (t1), TYPE_METHOD_BASETYPE (t2), |
b5e04de5 | 3536 | state, sccstack, sccstate, sccstate_obstack)) |
d7f09764 DN |
3537 | goto different_types; |
3538 | ||
3539 | /* Fallthru */ | |
3540 | ||
3541 | case FUNCTION_TYPE: | |
3542 | /* Function types are the same if the return type and arguments types | |
3543 | are the same. */ | |
b5e04de5 RG |
3544 | if (!gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
3545 | state, sccstack, sccstate, sccstate_obstack)) | |
bcee752e RG |
3546 | goto different_types; |
3547 | ||
ac9a30ae | 3548 | if (!comp_type_attributes (t1, t2)) |
d7f09764 | 3549 | goto different_types; |
bcee752e RG |
3550 | |
3551 | if (TYPE_ARG_TYPES (t1) == TYPE_ARG_TYPES (t2)) | |
3552 | goto same_types; | |
d7f09764 DN |
3553 | else |
3554 | { | |
bcee752e | 3555 | tree parms1, parms2; |
d7f09764 | 3556 | |
bcee752e RG |
3557 | for (parms1 = TYPE_ARG_TYPES (t1), parms2 = TYPE_ARG_TYPES (t2); |
3558 | parms1 && parms2; | |
3559 | parms1 = TREE_CHAIN (parms1), parms2 = TREE_CHAIN (parms2)) | |
d7f09764 | 3560 | { |
b5e04de5 RG |
3561 | if (!gtc_visit (TREE_VALUE (parms1), TREE_VALUE (parms2), |
3562 | state, sccstack, sccstate, sccstate_obstack)) | |
d7f09764 | 3563 | goto different_types; |
d7f09764 | 3564 | } |
bcee752e RG |
3565 | |
3566 | if (parms1 || parms2) | |
3567 | goto different_types; | |
3568 | ||
3569 | goto same_types; | |
d7f09764 DN |
3570 | } |
3571 | ||
b23dc2c0 RG |
3572 | case OFFSET_TYPE: |
3573 | { | |
b5e04de5 | 3574 | if (!gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
d4398a43 RG |
3575 | state, sccstack, sccstate, sccstate_obstack) |
3576 | || !gtc_visit (TYPE_OFFSET_BASETYPE (t1), | |
b5e04de5 | 3577 | TYPE_OFFSET_BASETYPE (t2), |
d4398a43 | 3578 | state, sccstack, sccstate, sccstate_obstack)) |
b23dc2c0 RG |
3579 | goto different_types; |
3580 | ||
3581 | goto same_types; | |
3582 | } | |
3583 | ||
d7f09764 DN |
3584 | case POINTER_TYPE: |
3585 | case REFERENCE_TYPE: | |
e575382e RG |
3586 | { |
3587 | /* If the two pointers have different ref-all attributes, | |
3588 | they can't be the same type. */ | |
3589 | if (TYPE_REF_CAN_ALIAS_ALL (t1) != TYPE_REF_CAN_ALIAS_ALL (t2)) | |
3590 | goto different_types; | |
d7f09764 | 3591 | |
e575382e RG |
3592 | /* Otherwise, pointer and reference types are the same if the |
3593 | pointed-to types are the same. */ | |
b5e04de5 | 3594 | if (gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
d4398a43 | 3595 | state, sccstack, sccstate, sccstate_obstack)) |
e575382e RG |
3596 | goto same_types; |
3597 | ||
3598 | goto different_types; | |
3599 | } | |
d7f09764 | 3600 | |
b0cc341f RG |
3601 | case INTEGER_TYPE: |
3602 | case BOOLEAN_TYPE: | |
3603 | { | |
3604 | tree min1 = TYPE_MIN_VALUE (t1); | |
3605 | tree max1 = TYPE_MAX_VALUE (t1); | |
3606 | tree min2 = TYPE_MIN_VALUE (t2); | |
3607 | tree max2 = TYPE_MAX_VALUE (t2); | |
3608 | bool min_equal_p = false; | |
3609 | bool max_equal_p = false; | |
3610 | ||
3611 | /* If either type has a minimum value, the other type must | |
3612 | have the same. */ | |
3613 | if (min1 == NULL_TREE && min2 == NULL_TREE) | |
3614 | min_equal_p = true; | |
3615 | else if (min1 && min2 && operand_equal_p (min1, min2, 0)) | |
3616 | min_equal_p = true; | |
3617 | ||
3618 | /* Likewise, if either type has a maximum value, the other | |
3619 | type must have the same. */ | |
3620 | if (max1 == NULL_TREE && max2 == NULL_TREE) | |
3621 | max_equal_p = true; | |
3622 | else if (max1 && max2 && operand_equal_p (max1, max2, 0)) | |
3623 | max_equal_p = true; | |
3624 | ||
3625 | if (!min_equal_p || !max_equal_p) | |
3626 | goto different_types; | |
3627 | ||
3628 | goto same_types; | |
3629 | } | |
3630 | ||
d7f09764 | 3631 | case ENUMERAL_TYPE: |
e575382e | 3632 | { |
b0cc341f RG |
3633 | /* FIXME lto, we cannot check bounds on enumeral types because |
3634 | different front ends will produce different values. | |
3635 | In C, enumeral types are integers, while in C++ each element | |
3636 | will have its own symbolic value. We should decide how enums | |
3637 | are to be represented in GIMPLE and have each front end lower | |
3638 | to that. */ | |
e575382e | 3639 | tree v1, v2; |
d7f09764 | 3640 | |
b0cc341f | 3641 | /* For enumeral types, all the values must be the same. */ |
e575382e RG |
3642 | if (TYPE_VALUES (t1) == TYPE_VALUES (t2)) |
3643 | goto same_types; | |
d7f09764 | 3644 | |
e575382e RG |
3645 | for (v1 = TYPE_VALUES (t1), v2 = TYPE_VALUES (t2); |
3646 | v1 && v2; | |
3647 | v1 = TREE_CHAIN (v1), v2 = TREE_CHAIN (v2)) | |
3648 | { | |
3649 | tree c1 = TREE_VALUE (v1); | |
3650 | tree c2 = TREE_VALUE (v2); | |
d7f09764 | 3651 | |
e575382e RG |
3652 | if (TREE_CODE (c1) == CONST_DECL) |
3653 | c1 = DECL_INITIAL (c1); | |
d7f09764 | 3654 | |
e575382e RG |
3655 | if (TREE_CODE (c2) == CONST_DECL) |
3656 | c2 = DECL_INITIAL (c2); | |
d7f09764 | 3657 | |
e575382e RG |
3658 | if (tree_int_cst_equal (c1, c2) != 1) |
3659 | goto different_types; | |
abe36b81 | 3660 | |
b5e04de5 | 3661 | if (TREE_PURPOSE (v1) != TREE_PURPOSE (v2)) |
abe36b81 | 3662 | goto different_types; |
e575382e | 3663 | } |
d7f09764 | 3664 | |
e575382e RG |
3665 | /* If one enumeration has more values than the other, they |
3666 | are not the same. */ | |
3667 | if (v1 || v2) | |
3668 | goto different_types; | |
d7f09764 | 3669 | |
e575382e RG |
3670 | goto same_types; |
3671 | } | |
d7f09764 DN |
3672 | |
3673 | case RECORD_TYPE: | |
3674 | case UNION_TYPE: | |
3675 | case QUAL_UNION_TYPE: | |
e575382e RG |
3676 | { |
3677 | tree f1, f2; | |
d7f09764 | 3678 | |
e575382e RG |
3679 | /* For aggregate types, all the fields must be the same. */ |
3680 | for (f1 = TYPE_FIELDS (t1), f2 = TYPE_FIELDS (t2); | |
3681 | f1 && f2; | |
3682 | f1 = TREE_CHAIN (f1), f2 = TREE_CHAIN (f2)) | |
3683 | { | |
17e99cdb RG |
3684 | /* Different field kinds are not compatible. */ |
3685 | if (TREE_CODE (f1) != TREE_CODE (f2)) | |
3686 | goto different_types; | |
3687 | /* Field decls must have the same name and offset. */ | |
3688 | if (TREE_CODE (f1) == FIELD_DECL | |
3689 | && (DECL_NONADDRESSABLE_P (f1) != DECL_NONADDRESSABLE_P (f2) | |
3690 | || !gimple_compare_field_offset (f1, f2))) | |
3691 | goto different_types; | |
3692 | /* All entities should have the same name and type. */ | |
b5e04de5 | 3693 | if (DECL_NAME (f1) != DECL_NAME (f2) |
b5e04de5 | 3694 | || !gtc_visit (TREE_TYPE (f1), TREE_TYPE (f2), |
d4398a43 | 3695 | state, sccstack, sccstate, sccstate_obstack)) |
e575382e RG |
3696 | goto different_types; |
3697 | } | |
d7f09764 | 3698 | |
e575382e RG |
3699 | /* If one aggregate has more fields than the other, they |
3700 | are not the same. */ | |
3701 | if (f1 || f2) | |
3702 | goto different_types; | |
d7f09764 | 3703 | |
e575382e RG |
3704 | goto same_types; |
3705 | } | |
d7f09764 | 3706 | |
d7f09764 | 3707 | default: |
b0cc341f | 3708 | gcc_unreachable (); |
d7f09764 DN |
3709 | } |
3710 | ||
3711 | /* Common exit path for types that are not compatible. */ | |
3712 | different_types: | |
d4398a43 RG |
3713 | state->u.same_p = 0; |
3714 | goto pop; | |
d7f09764 DN |
3715 | |
3716 | /* Common exit path for types that are compatible. */ | |
3717 | same_types: | |
67701d1d | 3718 | gcc_assert (state->u.same_p == 1); |
d7f09764 | 3719 | |
d4398a43 RG |
3720 | pop: |
3721 | if (state->low == state->dfsnum) | |
3722 | { | |
3723 | type_pair_t x; | |
d7f09764 | 3724 | |
67701d1d RG |
3725 | /* Pop off the SCC and set its cache values to the final |
3726 | comparison result. */ | |
d4398a43 RG |
3727 | do |
3728 | { | |
3729 | struct sccs *cstate; | |
3730 | x = VEC_pop (type_pair_t, *sccstack); | |
3731 | cstate = (struct sccs *)*pointer_map_contains (sccstate, x); | |
3732 | cstate->on_sccstack = false; | |
b5e04de5 | 3733 | x->same_p[GTC_MERGE] = state->u.same_p; |
d4398a43 RG |
3734 | } |
3735 | while (x != p); | |
3736 | } | |
d7f09764 | 3737 | |
d4398a43 RG |
3738 | return state->u.same_p; |
3739 | } | |
d7f09764 | 3740 | |
d4398a43 RG |
3741 | /* Return true iff T1 and T2 are structurally identical. When |
3742 | FOR_MERGING_P is true the an incomplete type and a complete type | |
3743 | are considered different, otherwise they are considered compatible. */ | |
d7f09764 | 3744 | |
0ca8de87 | 3745 | static bool |
b5e04de5 | 3746 | gimple_types_compatible_p (tree t1, tree t2) |
d7f09764 | 3747 | { |
d4398a43 RG |
3748 | VEC(type_pair_t, heap) *sccstack = NULL; |
3749 | struct pointer_map_t *sccstate; | |
3750 | struct obstack sccstate_obstack; | |
3751 | type_pair_t p = NULL; | |
3752 | bool res; | |
b5e04de5 | 3753 | tree leader1, leader2; |
d4398a43 RG |
3754 | |
3755 | /* Before starting to set up the SCC machinery handle simple cases. */ | |
3756 | ||
3757 | /* Check first for the obvious case of pointer identity. */ | |
3758 | if (t1 == t2) | |
3759 | return true; | |
3760 | ||
3761 | /* Check that we have two types to compare. */ | |
3762 | if (t1 == NULL_TREE || t2 == NULL_TREE) | |
3763 | return false; | |
3764 | ||
d4398a43 RG |
3765 | /* Can't be the same type if the types don't have the same code. */ |
3766 | if (TREE_CODE (t1) != TREE_CODE (t2)) | |
3767 | return false; | |
3768 | ||
3769 | /* Can't be the same type if they have different CV qualifiers. */ | |
3770 | if (TYPE_QUALS (t1) != TYPE_QUALS (t2)) | |
3771 | return false; | |
3772 | ||
61332f77 RG |
3773 | if (TREE_ADDRESSABLE (t1) != TREE_ADDRESSABLE (t2)) |
3774 | return false; | |
3775 | ||
3776 | /* Void types and nullptr types are always the same. */ | |
3777 | if (TREE_CODE (t1) == VOID_TYPE | |
3778 | || TREE_CODE (t1) == NULLPTR_TYPE) | |
d4398a43 RG |
3779 | return true; |
3780 | ||
61332f77 RG |
3781 | /* Can't be the same type if they have different alignment or mode. */ |
3782 | if (TYPE_ALIGN (t1) != TYPE_ALIGN (t2) | |
3783 | || TYPE_MODE (t1) != TYPE_MODE (t2)) | |
3784 | return false; | |
3785 | ||
d4398a43 RG |
3786 | /* Do some simple checks before doing three hashtable queries. */ |
3787 | if (INTEGRAL_TYPE_P (t1) | |
3788 | || SCALAR_FLOAT_TYPE_P (t1) | |
3789 | || FIXED_POINT_TYPE_P (t1) | |
3790 | || TREE_CODE (t1) == VECTOR_TYPE | |
3791 | || TREE_CODE (t1) == COMPLEX_TYPE | |
61332f77 RG |
3792 | || TREE_CODE (t1) == OFFSET_TYPE |
3793 | || POINTER_TYPE_P (t1)) | |
d4398a43 | 3794 | { |
61332f77 RG |
3795 | /* Can't be the same type if they have different sign or precision. */ |
3796 | if (TYPE_PRECISION (t1) != TYPE_PRECISION (t2) | |
d4398a43 RG |
3797 | || TYPE_UNSIGNED (t1) != TYPE_UNSIGNED (t2)) |
3798 | return false; | |
3799 | ||
3800 | if (TREE_CODE (t1) == INTEGER_TYPE | |
3801 | && (TYPE_IS_SIZETYPE (t1) != TYPE_IS_SIZETYPE (t2) | |
3802 | || TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2))) | |
3803 | return false; | |
3804 | ||
3805 | /* That's all we need to check for float and fixed-point types. */ | |
3806 | if (SCALAR_FLOAT_TYPE_P (t1) | |
3807 | || FIXED_POINT_TYPE_P (t1)) | |
3808 | return true; | |
3809 | ||
61332f77 | 3810 | /* For other types fall thru to more complex checks. */ |
d4398a43 RG |
3811 | } |
3812 | ||
61332f77 RG |
3813 | /* If the types have been previously registered and found equal |
3814 | they still are. */ | |
3815 | leader1 = gimple_lookup_type_leader (t1); | |
3816 | leader2 = gimple_lookup_type_leader (t2); | |
3817 | if (leader1 == t2 | |
3818 | || t1 == leader2 | |
3819 | || (leader1 && leader1 == leader2)) | |
3820 | return true; | |
d4398a43 RG |
3821 | |
3822 | /* If the hash values of t1 and t2 are different the types can't | |
3823 | possibly be the same. This helps keeping the type-pair hashtable | |
3824 | small, only tracking comparisons for hash collisions. */ | |
b5e04de5 | 3825 | if (gimple_type_hash (t1) != gimple_type_hash (t2)) |
d4398a43 RG |
3826 | return false; |
3827 | ||
3828 | /* If we've visited this type pair before (in the case of aggregates | |
3829 | with self-referential types), and we made a decision, return it. */ | |
a30726a4 | 3830 | p = lookup_type_pair (t1, t2); |
b5e04de5 | 3831 | if (p->same_p[GTC_MERGE] == 0 || p->same_p[GTC_MERGE] == 1) |
d4398a43 RG |
3832 | { |
3833 | /* We have already decided whether T1 and T2 are the | |
3834 | same, return the cached result. */ | |
b5e04de5 | 3835 | return p->same_p[GTC_MERGE] == 1; |
d4398a43 RG |
3836 | } |
3837 | ||
3838 | /* Now set up the SCC machinery for the comparison. */ | |
3839 | gtc_next_dfs_num = 1; | |
3840 | sccstate = pointer_map_create (); | |
3841 | gcc_obstack_init (&sccstate_obstack); | |
b5e04de5 | 3842 | res = gimple_types_compatible_p_1 (t1, t2, p, |
d4398a43 RG |
3843 | &sccstack, sccstate, &sccstate_obstack); |
3844 | VEC_free (type_pair_t, heap, sccstack); | |
3845 | pointer_map_destroy (sccstate); | |
3846 | obstack_free (&sccstate_obstack, NULL); | |
3847 | ||
3848 | return res; | |
3849 | } | |
d7f09764 | 3850 | |
d7f09764 DN |
3851 | |
3852 | static hashval_t | |
3853 | iterative_hash_gimple_type (tree, hashval_t, VEC(tree, heap) **, | |
b5e04de5 | 3854 | struct pointer_map_t *, struct obstack *); |
d7f09764 DN |
3855 | |
3856 | /* DFS visit the edge from the callers type with state *STATE to T. | |
3857 | Update the callers type hash V with the hash for T if it is not part | |
3858 | of the SCC containing the callers type and return it. | |
3859 | SCCSTACK, SCCSTATE and SCCSTATE_OBSTACK are state for the DFS walk done. */ | |
3860 | ||
3861 | static hashval_t | |
3862 | visit (tree t, struct sccs *state, hashval_t v, | |
3863 | VEC (tree, heap) **sccstack, | |
3864 | struct pointer_map_t *sccstate, | |
b5e04de5 | 3865 | struct obstack *sccstate_obstack) |
d7f09764 DN |
3866 | { |
3867 | struct sccs *cstate = NULL; | |
0f443ad0 | 3868 | struct tree_int_map m; |
d7f09764 DN |
3869 | void **slot; |
3870 | ||
3871 | /* If there is a hash value recorded for this type then it can't | |
3872 | possibly be part of our parent SCC. Simply mix in its hash. */ | |
0f443ad0 | 3873 | m.base.from = t; |
b5e04de5 | 3874 | if ((slot = htab_find_slot (type_hash_cache, &m, NO_INSERT)) |
0f443ad0 RG |
3875 | && *slot) |
3876 | return iterative_hash_hashval_t (((struct tree_int_map *) *slot)->to, v); | |
d7f09764 DN |
3877 | |
3878 | if ((slot = pointer_map_contains (sccstate, t)) != NULL) | |
3879 | cstate = (struct sccs *)*slot; | |
3880 | if (!cstate) | |
3881 | { | |
3882 | hashval_t tem; | |
3883 | /* Not yet visited. DFS recurse. */ | |
3884 | tem = iterative_hash_gimple_type (t, v, | |
b5e04de5 | 3885 | sccstack, sccstate, sccstate_obstack); |
d7f09764 DN |
3886 | if (!cstate) |
3887 | cstate = (struct sccs *)* pointer_map_contains (sccstate, t); | |
3888 | state->low = MIN (state->low, cstate->low); | |
3889 | /* If the type is no longer on the SCC stack and thus is not part | |
3890 | of the parents SCC mix in its hash value. Otherwise we will | |
3891 | ignore the type for hashing purposes and return the unaltered | |
3892 | hash value. */ | |
3893 | if (!cstate->on_sccstack) | |
3894 | return tem; | |
3895 | } | |
3896 | if (cstate->dfsnum < state->dfsnum | |
3897 | && cstate->on_sccstack) | |
3898 | state->low = MIN (cstate->dfsnum, state->low); | |
3899 | ||
3900 | /* We are part of our parents SCC, skip this type during hashing | |
3901 | and return the unaltered hash value. */ | |
3902 | return v; | |
3903 | } | |
3904 | ||
77785f4f | 3905 | /* Hash NAME with the previous hash value V and return it. */ |
d7f09764 DN |
3906 | |
3907 | static hashval_t | |
77785f4f | 3908 | iterative_hash_name (tree name, hashval_t v) |
d7f09764 | 3909 | { |
d7f09764 DN |
3910 | if (!name) |
3911 | return v; | |
ee7a54c5 | 3912 | v = iterative_hash_hashval_t (TREE_CODE (name), v); |
d7f09764 DN |
3913 | if (TREE_CODE (name) == TYPE_DECL) |
3914 | name = DECL_NAME (name); | |
3915 | if (!name) | |
3916 | return v; | |
3917 | gcc_assert (TREE_CODE (name) == IDENTIFIER_NODE); | |
d7f09764 DN |
3918 | return iterative_hash_object (IDENTIFIER_HASH_VALUE (name), v); |
3919 | } | |
3920 | ||
3066f593 RG |
3921 | /* A type, hashvalue pair for sorting SCC members. */ |
3922 | ||
3923 | struct type_hash_pair { | |
3924 | tree type; | |
3925 | hashval_t hash; | |
3926 | }; | |
3927 | ||
3928 | /* Compare two type, hashvalue pairs. */ | |
3929 | ||
3930 | static int | |
3931 | type_hash_pair_compare (const void *p1_, const void *p2_) | |
3932 | { | |
3933 | const struct type_hash_pair *p1 = (const struct type_hash_pair *) p1_; | |
3934 | const struct type_hash_pair *p2 = (const struct type_hash_pair *) p2_; | |
5beaf664 RG |
3935 | if (p1->hash < p2->hash) |
3936 | return -1; | |
3937 | else if (p1->hash > p2->hash) | |
3938 | return 1; | |
3939 | return 0; | |
3066f593 RG |
3940 | } |
3941 | ||
d7f09764 DN |
3942 | /* Returning a hash value for gimple type TYPE combined with VAL. |
3943 | SCCSTACK, SCCSTATE and SCCSTATE_OBSTACK are state for the DFS walk done. | |
3944 | ||
3945 | To hash a type we end up hashing in types that are reachable. | |
3946 | Through pointers we can end up with cycles which messes up the | |
3947 | required property that we need to compute the same hash value | |
3948 | for structurally equivalent types. To avoid this we have to | |
3949 | hash all types in a cycle (the SCC) in a commutative way. The | |
3950 | easiest way is to not mix in the hashes of the SCC members at | |
3951 | all. To make this work we have to delay setting the hash | |
3952 | values of the SCC until it is complete. */ | |
3953 | ||
3954 | static hashval_t | |
3955 | iterative_hash_gimple_type (tree type, hashval_t val, | |
3956 | VEC(tree, heap) **sccstack, | |
3957 | struct pointer_map_t *sccstate, | |
b5e04de5 | 3958 | struct obstack *sccstate_obstack) |
d7f09764 DN |
3959 | { |
3960 | hashval_t v; | |
3961 | void **slot; | |
3962 | struct sccs *state; | |
3963 | ||
0f443ad0 | 3964 | /* Not visited during this DFS walk. */ |
77a74ed7 | 3965 | gcc_checking_assert (!pointer_map_contains (sccstate, type)); |
d7f09764 DN |
3966 | state = XOBNEW (sccstate_obstack, struct sccs); |
3967 | *pointer_map_insert (sccstate, type) = state; | |
3968 | ||
3969 | VEC_safe_push (tree, heap, *sccstack, type); | |
3970 | state->dfsnum = next_dfs_num++; | |
3971 | state->low = state->dfsnum; | |
3972 | state->on_sccstack = true; | |
3973 | ||
3974 | /* Combine a few common features of types so that types are grouped into | |
3975 | smaller sets; when searching for existing matching types to merge, | |
3976 | only existing types having the same features as the new type will be | |
3977 | checked. */ | |
e1caba18 | 3978 | v = iterative_hash_name (TYPE_NAME (type), 0); |
ee7a54c5 RG |
3979 | if (TYPE_NAME (type) |
3980 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
3981 | && DECL_CONTEXT (TYPE_NAME (type)) | |
3982 | && TYPE_P (DECL_CONTEXT (TYPE_NAME (type)))) | |
3983 | v = visit (DECL_CONTEXT (TYPE_NAME (type)), state, v, | |
3984 | sccstack, sccstate, sccstate_obstack); | |
e1caba18 | 3985 | v = iterative_hash_hashval_t (TREE_CODE (type), v); |
d7f09764 DN |
3986 | v = iterative_hash_hashval_t (TYPE_QUALS (type), v); |
3987 | v = iterative_hash_hashval_t (TREE_ADDRESSABLE (type), v); | |
3988 | ||
3989 | /* Do not hash the types size as this will cause differences in | |
3990 | hash values for the complete vs. the incomplete type variant. */ | |
3991 | ||
3992 | /* Incorporate common features of numerical types. */ | |
3993 | if (INTEGRAL_TYPE_P (type) | |
3994 | || SCALAR_FLOAT_TYPE_P (type) | |
3995 | || FIXED_POINT_TYPE_P (type)) | |
3996 | { | |
3997 | v = iterative_hash_hashval_t (TYPE_PRECISION (type), v); | |
3998 | v = iterative_hash_hashval_t (TYPE_MODE (type), v); | |
3999 | v = iterative_hash_hashval_t (TYPE_UNSIGNED (type), v); | |
4000 | } | |
4001 | ||
4002 | /* For pointer and reference types, fold in information about the type | |
1e83b5f1 | 4003 | pointed to. */ |
d7f09764 | 4004 | if (POINTER_TYPE_P (type)) |
1e83b5f1 RG |
4005 | v = visit (TREE_TYPE (type), state, v, |
4006 | sccstack, sccstate, sccstate_obstack); | |
d7f09764 | 4007 | |
f798226d RG |
4008 | /* For integer types hash the types min/max values and the string flag. */ |
4009 | if (TREE_CODE (type) == INTEGER_TYPE) | |
4010 | { | |
429c98c9 RG |
4011 | /* OMP lowering can introduce error_mark_node in place of |
4012 | random local decls in types. */ | |
4013 | if (TYPE_MIN_VALUE (type) != error_mark_node) | |
4014 | v = iterative_hash_expr (TYPE_MIN_VALUE (type), v); | |
4015 | if (TYPE_MAX_VALUE (type) != error_mark_node) | |
4016 | v = iterative_hash_expr (TYPE_MAX_VALUE (type), v); | |
f798226d RG |
4017 | v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v); |
4018 | } | |
4019 | ||
4020 | /* For array types hash their domain and the string flag. */ | |
4021 | if (TREE_CODE (type) == ARRAY_TYPE | |
4022 | && TYPE_DOMAIN (type)) | |
4023 | { | |
4024 | v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v); | |
4025 | v = visit (TYPE_DOMAIN (type), state, v, | |
b5e04de5 | 4026 | sccstack, sccstate, sccstate_obstack); |
f798226d RG |
4027 | } |
4028 | ||
4029 | /* Recurse for aggregates with a single element type. */ | |
d7f09764 DN |
4030 | if (TREE_CODE (type) == ARRAY_TYPE |
4031 | || TREE_CODE (type) == COMPLEX_TYPE | |
4032 | || TREE_CODE (type) == VECTOR_TYPE) | |
4033 | v = visit (TREE_TYPE (type), state, v, | |
b5e04de5 | 4034 | sccstack, sccstate, sccstate_obstack); |
d7f09764 DN |
4035 | |
4036 | /* Incorporate function return and argument types. */ | |
4037 | if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE) | |
4038 | { | |
4039 | unsigned na; | |
4040 | tree p; | |
4041 | ||
4042 | /* For method types also incorporate their parent class. */ | |
4043 | if (TREE_CODE (type) == METHOD_TYPE) | |
4044 | v = visit (TYPE_METHOD_BASETYPE (type), state, v, | |
b5e04de5 | 4045 | sccstack, sccstate, sccstate_obstack); |
d7f09764 | 4046 | |
1e83b5f1 RG |
4047 | /* Check result and argument types. */ |
4048 | v = visit (TREE_TYPE (type), state, v, | |
4049 | sccstack, sccstate, sccstate_obstack); | |
d7f09764 DN |
4050 | for (p = TYPE_ARG_TYPES (type), na = 0; p; p = TREE_CHAIN (p)) |
4051 | { | |
1e83b5f1 RG |
4052 | v = visit (TREE_VALUE (p), state, v, |
4053 | sccstack, sccstate, sccstate_obstack); | |
d7f09764 DN |
4054 | na++; |
4055 | } | |
4056 | ||
4057 | v = iterative_hash_hashval_t (na, v); | |
4058 | } | |
4059 | ||
aa47290b | 4060 | if (RECORD_OR_UNION_TYPE_P (type)) |
d7f09764 DN |
4061 | { |
4062 | unsigned nf; | |
4063 | tree f; | |
4064 | ||
d7f09764 DN |
4065 | for (f = TYPE_FIELDS (type), nf = 0; f; f = TREE_CHAIN (f)) |
4066 | { | |
b5e04de5 | 4067 | v = iterative_hash_name (DECL_NAME (f), v); |
d7f09764 | 4068 | v = visit (TREE_TYPE (f), state, v, |
b5e04de5 | 4069 | sccstack, sccstate, sccstate_obstack); |
d7f09764 DN |
4070 | nf++; |
4071 | } | |
4072 | ||
4073 | v = iterative_hash_hashval_t (nf, v); | |
4074 | } | |
4075 | ||
4076 | /* Record hash for us. */ | |
d4398a43 | 4077 | state->u.hash = v; |
d7f09764 DN |
4078 | |
4079 | /* See if we found an SCC. */ | |
4080 | if (state->low == state->dfsnum) | |
4081 | { | |
4082 | tree x; | |
3066f593 | 4083 | struct tree_int_map *m; |
d7f09764 DN |
4084 | |
4085 | /* Pop off the SCC and set its hash values. */ | |
3066f593 | 4086 | x = VEC_pop (tree, *sccstack); |
3066f593 RG |
4087 | /* Optimize SCC size one. */ |
4088 | if (x == type) | |
d7f09764 | 4089 | { |
008bad7a | 4090 | state->on_sccstack = false; |
3066f593 | 4091 | m = ggc_alloc_cleared_tree_int_map (); |
0f443ad0 | 4092 | m->base.from = x; |
008bad7a | 4093 | m->to = v; |
b5e04de5 | 4094 | slot = htab_find_slot (type_hash_cache, m, INSERT); |
0f443ad0 RG |
4095 | gcc_assert (!*slot); |
4096 | *slot = (void *) m; | |
d7f09764 | 4097 | } |
3066f593 RG |
4098 | else |
4099 | { | |
008bad7a | 4100 | struct sccs *cstate; |
3066f593 RG |
4101 | unsigned first, i, size, j; |
4102 | struct type_hash_pair *pairs; | |
4103 | /* Pop off the SCC and build an array of type, hash pairs. */ | |
4104 | first = VEC_length (tree, *sccstack) - 1; | |
4105 | while (VEC_index (tree, *sccstack, first) != type) | |
4106 | --first; | |
4107 | size = VEC_length (tree, *sccstack) - first + 1; | |
4108 | pairs = XALLOCAVEC (struct type_hash_pair, size); | |
4109 | i = 0; | |
008bad7a RG |
4110 | cstate = (struct sccs *)*pointer_map_contains (sccstate, x); |
4111 | cstate->on_sccstack = false; | |
3066f593 RG |
4112 | pairs[i].type = x; |
4113 | pairs[i].hash = cstate->u.hash; | |
4114 | do | |
4115 | { | |
4116 | x = VEC_pop (tree, *sccstack); | |
4117 | cstate = (struct sccs *)*pointer_map_contains (sccstate, x); | |
4118 | cstate->on_sccstack = false; | |
4119 | ++i; | |
4120 | pairs[i].type = x; | |
4121 | pairs[i].hash = cstate->u.hash; | |
4122 | } | |
4123 | while (x != type); | |
4124 | gcc_assert (i + 1 == size); | |
4125 | /* Sort the arrays of type, hash pairs so that when we mix in | |
4126 | all members of the SCC the hash value becomes independent on | |
4127 | the order we visited the SCC. Disregard hashes equal to | |
4128 | the hash of the type we mix into because we cannot guarantee | |
4129 | a stable sort for those across different TUs. */ | |
4130 | qsort (pairs, size, sizeof (struct type_hash_pair), | |
4131 | type_hash_pair_compare); | |
4132 | for (i = 0; i < size; ++i) | |
4133 | { | |
4134 | hashval_t hash; | |
4135 | m = ggc_alloc_cleared_tree_int_map (); | |
4136 | m->base.from = pairs[i].type; | |
4137 | hash = pairs[i].hash; | |
4138 | /* Skip same hashes. */ | |
4139 | for (j = i + 1; j < size && pairs[j].hash == pairs[i].hash; ++j) | |
4140 | ; | |
4141 | for (; j < size; ++j) | |
4142 | hash = iterative_hash_hashval_t (pairs[j].hash, hash); | |
4143 | for (j = 0; pairs[j].hash != pairs[i].hash; ++j) | |
4144 | hash = iterative_hash_hashval_t (pairs[j].hash, hash); | |
4145 | m->to = hash; | |
008bad7a RG |
4146 | if (pairs[i].type == type) |
4147 | v = hash; | |
3066f593 RG |
4148 | slot = htab_find_slot (type_hash_cache, m, INSERT); |
4149 | gcc_assert (!*slot); | |
4150 | *slot = (void *) m; | |
4151 | } | |
4152 | } | |
d7f09764 DN |
4153 | } |
4154 | ||
4155 | return iterative_hash_hashval_t (v, val); | |
4156 | } | |
4157 | ||
4158 | ||
4159 | /* Returns a hash value for P (assumed to be a type). The hash value | |
4160 | is computed using some distinguishing features of the type. Note | |
4161 | that we cannot use pointer hashing here as we may be dealing with | |
4162 | two distinct instances of the same type. | |
4163 | ||
4164 | This function should produce the same hash value for two compatible | |
4165 | types according to gimple_types_compatible_p. */ | |
4166 | ||
4167 | static hashval_t | |
b5e04de5 | 4168 | gimple_type_hash (const void *p) |
d7f09764 | 4169 | { |
ddd4d0e1 | 4170 | const_tree t = (const_tree) p; |
d7f09764 DN |
4171 | VEC(tree, heap) *sccstack = NULL; |
4172 | struct pointer_map_t *sccstate; | |
4173 | struct obstack sccstate_obstack; | |
4174 | hashval_t val; | |
4175 | void **slot; | |
0f443ad0 | 4176 | struct tree_int_map m; |
d7f09764 | 4177 | |
b5e04de5 | 4178 | if (type_hash_cache == NULL) |
0f443ad0 RG |
4179 | type_hash_cache = htab_create_ggc (512, tree_int_map_hash, |
4180 | tree_int_map_eq, NULL); | |
d7f09764 | 4181 | |
0f443ad0 | 4182 | m.base.from = CONST_CAST_TREE (t); |
b5e04de5 | 4183 | if ((slot = htab_find_slot (type_hash_cache, &m, NO_INSERT)) |
0f443ad0 RG |
4184 | && *slot) |
4185 | return iterative_hash_hashval_t (((struct tree_int_map *) *slot)->to, 0); | |
d7f09764 DN |
4186 | |
4187 | /* Perform a DFS walk and pre-hash all reachable types. */ | |
4188 | next_dfs_num = 1; | |
4189 | sccstate = pointer_map_create (); | |
4190 | gcc_obstack_init (&sccstate_obstack); | |
ddd4d0e1 | 4191 | val = iterative_hash_gimple_type (CONST_CAST_TREE (t), 0, |
b5e04de5 | 4192 | &sccstack, sccstate, &sccstate_obstack); |
d7f09764 DN |
4193 | VEC_free (tree, heap, sccstack); |
4194 | pointer_map_destroy (sccstate); | |
4195 | obstack_free (&sccstate_obstack, NULL); | |
4196 | ||
4197 | return val; | |
4198 | } | |
4199 | ||
825b27de RG |
4200 | /* Returning a hash value for gimple type TYPE combined with VAL. |
4201 | ||
4202 | The hash value returned is equal for types considered compatible | |
4203 | by gimple_canonical_types_compatible_p. */ | |
4204 | ||
4205 | static hashval_t | |
4206 | iterative_hash_canonical_type (tree type, hashval_t val) | |
4207 | { | |
4208 | hashval_t v; | |
4209 | void **slot; | |
4210 | struct tree_int_map *mp, m; | |
4211 | ||
4212 | m.base.from = type; | |
4213 | if ((slot = htab_find_slot (canonical_type_hash_cache, &m, INSERT)) | |
4214 | && *slot) | |
d0340959 | 4215 | return iterative_hash_hashval_t (((struct tree_int_map *) *slot)->to, val); |
825b27de RG |
4216 | |
4217 | /* Combine a few common features of types so that types are grouped into | |
4218 | smaller sets; when searching for existing matching types to merge, | |
4219 | only existing types having the same features as the new type will be | |
4220 | checked. */ | |
4221 | v = iterative_hash_hashval_t (TREE_CODE (type), 0); | |
825b27de | 4222 | v = iterative_hash_hashval_t (TREE_ADDRESSABLE (type), v); |
61332f77 RG |
4223 | v = iterative_hash_hashval_t (TYPE_ALIGN (type), v); |
4224 | v = iterative_hash_hashval_t (TYPE_MODE (type), v); | |
825b27de RG |
4225 | |
4226 | /* Incorporate common features of numerical types. */ | |
4227 | if (INTEGRAL_TYPE_P (type) | |
4228 | || SCALAR_FLOAT_TYPE_P (type) | |
61332f77 RG |
4229 | || FIXED_POINT_TYPE_P (type) |
4230 | || TREE_CODE (type) == VECTOR_TYPE | |
4231 | || TREE_CODE (type) == COMPLEX_TYPE | |
4232 | || TREE_CODE (type) == OFFSET_TYPE | |
4233 | || POINTER_TYPE_P (type)) | |
825b27de RG |
4234 | { |
4235 | v = iterative_hash_hashval_t (TYPE_PRECISION (type), v); | |
825b27de RG |
4236 | v = iterative_hash_hashval_t (TYPE_UNSIGNED (type), v); |
4237 | } | |
4238 | ||
4239 | /* For pointer and reference types, fold in information about the type | |
4240 | pointed to but do not recurse to the pointed-to type. */ | |
4241 | if (POINTER_TYPE_P (type)) | |
4242 | { | |
4243 | v = iterative_hash_hashval_t (TYPE_REF_CAN_ALIAS_ALL (type), v); | |
61332f77 RG |
4244 | v = iterative_hash_hashval_t (TYPE_ADDR_SPACE (TREE_TYPE (type)), v); |
4245 | v = iterative_hash_hashval_t (TYPE_RESTRICT (type), v); | |
825b27de RG |
4246 | v = iterative_hash_hashval_t (TREE_CODE (TREE_TYPE (type)), v); |
4247 | } | |
4248 | ||
4249 | /* For integer types hash the types min/max values and the string flag. */ | |
4250 | if (TREE_CODE (type) == INTEGER_TYPE) | |
4251 | { | |
825b27de | 4252 | v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v); |
61332f77 | 4253 | v = iterative_hash_hashval_t (TYPE_IS_SIZETYPE (type), v); |
825b27de RG |
4254 | } |
4255 | ||
4256 | /* For array types hash their domain and the string flag. */ | |
4257 | if (TREE_CODE (type) == ARRAY_TYPE | |
4258 | && TYPE_DOMAIN (type)) | |
4259 | { | |
4260 | v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v); | |
4261 | v = iterative_hash_canonical_type (TYPE_DOMAIN (type), v); | |
4262 | } | |
4263 | ||
4264 | /* Recurse for aggregates with a single element type. */ | |
4265 | if (TREE_CODE (type) == ARRAY_TYPE | |
4266 | || TREE_CODE (type) == COMPLEX_TYPE | |
4267 | || TREE_CODE (type) == VECTOR_TYPE) | |
4268 | v = iterative_hash_canonical_type (TREE_TYPE (type), v); | |
4269 | ||
4270 | /* Incorporate function return and argument types. */ | |
4271 | if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE) | |
4272 | { | |
4273 | unsigned na; | |
4274 | tree p; | |
4275 | ||
4276 | /* For method types also incorporate their parent class. */ | |
4277 | if (TREE_CODE (type) == METHOD_TYPE) | |
4278 | v = iterative_hash_canonical_type (TYPE_METHOD_BASETYPE (type), v); | |
4279 | ||
6a20ce76 | 4280 | v = iterative_hash_canonical_type (TREE_TYPE (type), v); |
825b27de RG |
4281 | |
4282 | for (p = TYPE_ARG_TYPES (type), na = 0; p; p = TREE_CHAIN (p)) | |
4283 | { | |
6a20ce76 | 4284 | v = iterative_hash_canonical_type (TREE_VALUE (p), v); |
825b27de RG |
4285 | na++; |
4286 | } | |
4287 | ||
4288 | v = iterative_hash_hashval_t (na, v); | |
4289 | } | |
4290 | ||
aa47290b | 4291 | if (RECORD_OR_UNION_TYPE_P (type)) |
825b27de RG |
4292 | { |
4293 | unsigned nf; | |
4294 | tree f; | |
4295 | ||
4296 | for (f = TYPE_FIELDS (type), nf = 0; f; f = TREE_CHAIN (f)) | |
e7cfe241 RG |
4297 | if (TREE_CODE (f) == FIELD_DECL) |
4298 | { | |
4299 | v = iterative_hash_canonical_type (TREE_TYPE (f), v); | |
4300 | nf++; | |
4301 | } | |
825b27de RG |
4302 | |
4303 | v = iterative_hash_hashval_t (nf, v); | |
4304 | } | |
4305 | ||
4306 | /* Cache the just computed hash value. */ | |
4307 | mp = ggc_alloc_cleared_tree_int_map (); | |
4308 | mp->base.from = type; | |
4309 | mp->to = v; | |
4310 | *slot = (void *) mp; | |
4311 | ||
4312 | return iterative_hash_hashval_t (v, val); | |
4313 | } | |
4314 | ||
a844a60b RG |
4315 | static hashval_t |
4316 | gimple_canonical_type_hash (const void *p) | |
4317 | { | |
825b27de RG |
4318 | if (canonical_type_hash_cache == NULL) |
4319 | canonical_type_hash_cache = htab_create_ggc (512, tree_int_map_hash, | |
4320 | tree_int_map_eq, NULL); | |
4321 | ||
4322 | return iterative_hash_canonical_type (CONST_CAST_TREE ((const_tree) p), 0); | |
a844a60b RG |
4323 | } |
4324 | ||
d7f09764 DN |
4325 | |
4326 | /* Returns nonzero if P1 and P2 are equal. */ | |
4327 | ||
4328 | static int | |
4329 | gimple_type_eq (const void *p1, const void *p2) | |
4330 | { | |
4331 | const_tree t1 = (const_tree) p1; | |
4332 | const_tree t2 = (const_tree) p2; | |
f5d6836a | 4333 | return gimple_types_compatible_p (CONST_CAST_TREE (t1), |
b5e04de5 | 4334 | CONST_CAST_TREE (t2)); |
d7f09764 DN |
4335 | } |
4336 | ||
4337 | ||
93b2a207 RG |
4338 | /* Worker for gimple_register_type. |
4339 | Register type T in the global type table gimple_types. | |
4340 | When REGISTERING_MV is false first recurse for the main variant of T. */ | |
d7f09764 | 4341 | |
93b2a207 RG |
4342 | static tree |
4343 | gimple_register_type_1 (tree t, bool registering_mv) | |
d7f09764 DN |
4344 | { |
4345 | void **slot; | |
4490cae6 | 4346 | gimple_type_leader_entry *leader; |
d7f09764 | 4347 | |
4490cae6 RG |
4348 | /* If we registered this type before return the cached result. */ |
4349 | leader = &gimple_type_leader[TYPE_UID (t) % GIMPLE_TYPE_LEADER_SIZE]; | |
4350 | if (leader->type == t) | |
4351 | return leader->leader; | |
4a2ac96f | 4352 | |
20d36f0e RG |
4353 | /* Always register the main variant first. This is important so we |
4354 | pick up the non-typedef variants as canonical, otherwise we'll end | |
93b2a207 RG |
4355 | up taking typedef ids for structure tags during comparison. |
4356 | It also makes sure that main variants will be merged to main variants. | |
4357 | As we are operating on a possibly partially fixed up type graph | |
4358 | do not bother to recurse more than once, otherwise we may end up | |
31b3ca64 RG |
4359 | walking in circles. |
4360 | If we are registering a main variant it will either remain its | |
4361 | own main variant or it will be merged to something else in which | |
4362 | case we do not care for the main variant leader. */ | |
93b2a207 RG |
4363 | if (!registering_mv |
4364 | && TYPE_MAIN_VARIANT (t) != t) | |
fb291a1e | 4365 | gimple_register_type_1 (TYPE_MAIN_VARIANT (t), true); |
d7f09764 | 4366 | |
fb291a1e | 4367 | /* See if we already have an equivalent type registered. */ |
d7f09764 DN |
4368 | slot = htab_find_slot (gimple_types, t, INSERT); |
4369 | if (*slot | |
4370 | && *(tree *)slot != t) | |
4371 | { | |
4372 | tree new_type = (tree) *((tree *) slot); | |
4490cae6 RG |
4373 | leader->type = t; |
4374 | leader->leader = new_type; | |
fb291a1e | 4375 | return new_type; |
4490cae6 RG |
4376 | } |
4377 | ||
fb291a1e RG |
4378 | /* If not, insert it to the cache and the hash. */ |
4379 | leader->type = t; | |
4380 | leader->leader = t; | |
4381 | *slot = (void *) t; | |
4490cae6 RG |
4382 | return t; |
4383 | } | |
4384 | ||
93b2a207 RG |
4385 | /* Register type T in the global type table gimple_types. |
4386 | If another type T', compatible with T, already existed in | |
4387 | gimple_types then return T', otherwise return T. This is used by | |
4388 | LTO to merge identical types read from different TUs. */ | |
4389 | ||
4390 | tree | |
4391 | gimple_register_type (tree t) | |
4392 | { | |
4393 | gcc_assert (TYPE_P (t)); | |
4394 | ||
4395 | if (!gimple_type_leader) | |
4396 | gimple_type_leader = ggc_alloc_cleared_vec_gimple_type_leader_entry_s | |
4397 | (GIMPLE_TYPE_LEADER_SIZE); | |
4398 | ||
4399 | if (gimple_types == NULL) | |
4400 | gimple_types = htab_create_ggc (16381, gimple_type_hash, gimple_type_eq, 0); | |
4401 | ||
4402 | return gimple_register_type_1 (t, false); | |
4403 | } | |
4490cae6 | 4404 | |
825b27de RG |
4405 | /* The TYPE_CANONICAL merging machinery. It should closely resemble |
4406 | the middle-end types_compatible_p function. It needs to avoid | |
4407 | claiming types are different for types that should be treated | |
4408 | the same with respect to TBAA. Canonical types are also used | |
4409 | for IL consistency checks via the useless_type_conversion_p | |
4410 | predicate which does not handle all type kinds itself but falls | |
4411 | back to pointer-comparison of TYPE_CANONICAL for aggregates | |
4412 | for example. */ | |
4413 | ||
4414 | /* Return true iff T1 and T2 are structurally identical for what | |
4415 | TBAA is concerned. */ | |
4416 | ||
4417 | static bool | |
4418 | gimple_canonical_types_compatible_p (tree t1, tree t2) | |
4419 | { | |
825b27de RG |
4420 | /* Before starting to set up the SCC machinery handle simple cases. */ |
4421 | ||
4422 | /* Check first for the obvious case of pointer identity. */ | |
4423 | if (t1 == t2) | |
4424 | return true; | |
4425 | ||
4426 | /* Check that we have two types to compare. */ | |
4427 | if (t1 == NULL_TREE || t2 == NULL_TREE) | |
4428 | return false; | |
4429 | ||
4430 | /* If the types have been previously registered and found equal | |
4431 | they still are. */ | |
4432 | if (TYPE_CANONICAL (t1) | |
4433 | && TYPE_CANONICAL (t1) == TYPE_CANONICAL (t2)) | |
4434 | return true; | |
4435 | ||
4436 | /* Can't be the same type if the types don't have the same code. */ | |
4437 | if (TREE_CODE (t1) != TREE_CODE (t2)) | |
4438 | return false; | |
4439 | ||
61332f77 | 4440 | if (TREE_ADDRESSABLE (t1) != TREE_ADDRESSABLE (t2)) |
825b27de RG |
4441 | return false; |
4442 | ||
61332f77 RG |
4443 | /* Qualifiers do not matter for canonical type comparison purposes. */ |
4444 | ||
4445 | /* Void types and nullptr types are always the same. */ | |
4446 | if (TREE_CODE (t1) == VOID_TYPE | |
4447 | || TREE_CODE (t1) == NULLPTR_TYPE) | |
825b27de RG |
4448 | return true; |
4449 | ||
61332f77 RG |
4450 | /* Can't be the same type if they have different alignment, or mode. */ |
4451 | if (TYPE_ALIGN (t1) != TYPE_ALIGN (t2) | |
4452 | || TYPE_MODE (t1) != TYPE_MODE (t2)) | |
4453 | return false; | |
4454 | ||
4455 | /* Non-aggregate types can be handled cheaply. */ | |
825b27de RG |
4456 | if (INTEGRAL_TYPE_P (t1) |
4457 | || SCALAR_FLOAT_TYPE_P (t1) | |
4458 | || FIXED_POINT_TYPE_P (t1) | |
4459 | || TREE_CODE (t1) == VECTOR_TYPE | |
4460 | || TREE_CODE (t1) == COMPLEX_TYPE | |
61332f77 RG |
4461 | || TREE_CODE (t1) == OFFSET_TYPE |
4462 | || POINTER_TYPE_P (t1)) | |
825b27de | 4463 | { |
61332f77 RG |
4464 | /* Can't be the same type if they have different sign or precision. */ |
4465 | if (TYPE_PRECISION (t1) != TYPE_PRECISION (t2) | |
825b27de RG |
4466 | || TYPE_UNSIGNED (t1) != TYPE_UNSIGNED (t2)) |
4467 | return false; | |
4468 | ||
4469 | if (TREE_CODE (t1) == INTEGER_TYPE | |
4470 | && (TYPE_IS_SIZETYPE (t1) != TYPE_IS_SIZETYPE (t2) | |
4471 | || TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2))) | |
4472 | return false; | |
4473 | ||
61332f77 RG |
4474 | /* For canonical type comparisons we do not want to build SCCs |
4475 | so we cannot compare pointed-to types. But we can, for now, | |
4476 | require the same pointed-to type kind and match what | |
4477 | useless_type_conversion_p would do. */ | |
4478 | if (POINTER_TYPE_P (t1)) | |
4479 | { | |
4480 | /* If the two pointers have different ref-all attributes, | |
4481 | they can't be the same type. */ | |
4482 | if (TYPE_REF_CAN_ALIAS_ALL (t1) != TYPE_REF_CAN_ALIAS_ALL (t2)) | |
4483 | return false; | |
825b27de | 4484 | |
61332f77 RG |
4485 | if (TYPE_ADDR_SPACE (TREE_TYPE (t1)) |
4486 | != TYPE_ADDR_SPACE (TREE_TYPE (t2))) | |
4487 | return false; | |
825b27de | 4488 | |
61332f77 RG |
4489 | if (TYPE_RESTRICT (t1) != TYPE_RESTRICT (t2)) |
4490 | return false; | |
4491 | ||
4492 | if (TREE_CODE (TREE_TYPE (t1)) != TREE_CODE (TREE_TYPE (t2))) | |
4493 | return false; | |
4494 | } | |
4495 | ||
4496 | /* Tail-recurse to components. */ | |
4497 | if (TREE_CODE (t1) == VECTOR_TYPE | |
4498 | || TREE_CODE (t1) == COMPLEX_TYPE) | |
4499 | return gimple_canonical_types_compatible_p (TREE_TYPE (t1), | |
4500 | TREE_TYPE (t2)); | |
4501 | ||
4502 | return true; | |
825b27de RG |
4503 | } |
4504 | ||
825b27de RG |
4505 | /* If their attributes are not the same they can't be the same type. */ |
4506 | if (!attribute_list_equal (TYPE_ATTRIBUTES (t1), TYPE_ATTRIBUTES (t2))) | |
b8a71aed | 4507 | return false; |
825b27de RG |
4508 | |
4509 | /* Do type-specific comparisons. */ | |
4510 | switch (TREE_CODE (t1)) | |
4511 | { | |
825b27de RG |
4512 | case ARRAY_TYPE: |
4513 | /* Array types are the same if the element types are the same and | |
4514 | the number of elements are the same. */ | |
4515 | if (!gimple_canonical_types_compatible_p (TREE_TYPE (t1), TREE_TYPE (t2)) | |
4516 | || TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2) | |
4517 | || TYPE_NONALIASED_COMPONENT (t1) != TYPE_NONALIASED_COMPONENT (t2)) | |
b8a71aed | 4518 | return false; |
825b27de RG |
4519 | else |
4520 | { | |
4521 | tree i1 = TYPE_DOMAIN (t1); | |
4522 | tree i2 = TYPE_DOMAIN (t2); | |
4523 | ||
4524 | /* For an incomplete external array, the type domain can be | |
4525 | NULL_TREE. Check this condition also. */ | |
4526 | if (i1 == NULL_TREE && i2 == NULL_TREE) | |
b8a71aed | 4527 | return true; |
825b27de | 4528 | else if (i1 == NULL_TREE || i2 == NULL_TREE) |
b8a71aed | 4529 | return false; |
825b27de RG |
4530 | /* If for a complete array type the possibly gimplified sizes |
4531 | are different the types are different. */ | |
4532 | else if (((TYPE_SIZE (i1) != NULL) ^ (TYPE_SIZE (i2) != NULL)) | |
4533 | || (TYPE_SIZE (i1) | |
4534 | && TYPE_SIZE (i2) | |
4535 | && !operand_equal_p (TYPE_SIZE (i1), TYPE_SIZE (i2), 0))) | |
b8a71aed | 4536 | return false; |
825b27de RG |
4537 | else |
4538 | { | |
4539 | tree min1 = TYPE_MIN_VALUE (i1); | |
4540 | tree min2 = TYPE_MIN_VALUE (i2); | |
4541 | tree max1 = TYPE_MAX_VALUE (i1); | |
4542 | tree max2 = TYPE_MAX_VALUE (i2); | |
4543 | ||
4544 | /* The minimum/maximum values have to be the same. */ | |
4545 | if ((min1 == min2 | |
4546 | || (min1 && min2 | |
4547 | && ((TREE_CODE (min1) == PLACEHOLDER_EXPR | |
4548 | && TREE_CODE (min2) == PLACEHOLDER_EXPR) | |
4549 | || operand_equal_p (min1, min2, 0)))) | |
4550 | && (max1 == max2 | |
4551 | || (max1 && max2 | |
4552 | && ((TREE_CODE (max1) == PLACEHOLDER_EXPR | |
4553 | && TREE_CODE (max2) == PLACEHOLDER_EXPR) | |
4554 | || operand_equal_p (max1, max2, 0))))) | |
b8a71aed | 4555 | return true; |
825b27de | 4556 | else |
b8a71aed | 4557 | return false; |
825b27de RG |
4558 | } |
4559 | } | |
4560 | ||
4561 | case METHOD_TYPE: | |
4562 | /* Method types should belong to the same class. */ | |
4563 | if (!gimple_canonical_types_compatible_p | |
4564 | (TYPE_METHOD_BASETYPE (t1), TYPE_METHOD_BASETYPE (t2))) | |
b8a71aed | 4565 | return false; |
825b27de RG |
4566 | |
4567 | /* Fallthru */ | |
4568 | ||
4569 | case FUNCTION_TYPE: | |
4570 | /* Function types are the same if the return type and arguments types | |
4571 | are the same. */ | |
6a20ce76 | 4572 | if (!gimple_canonical_types_compatible_p (TREE_TYPE (t1), TREE_TYPE (t2))) |
b8a71aed | 4573 | return false; |
825b27de RG |
4574 | |
4575 | if (!comp_type_attributes (t1, t2)) | |
b8a71aed | 4576 | return false; |
825b27de RG |
4577 | |
4578 | if (TYPE_ARG_TYPES (t1) == TYPE_ARG_TYPES (t2)) | |
b8a71aed | 4579 | return true; |
825b27de RG |
4580 | else |
4581 | { | |
4582 | tree parms1, parms2; | |
4583 | ||
4584 | for (parms1 = TYPE_ARG_TYPES (t1), parms2 = TYPE_ARG_TYPES (t2); | |
4585 | parms1 && parms2; | |
4586 | parms1 = TREE_CHAIN (parms1), parms2 = TREE_CHAIN (parms2)) | |
4587 | { | |
6a20ce76 RG |
4588 | if (!gimple_canonical_types_compatible_p |
4589 | (TREE_VALUE (parms1), TREE_VALUE (parms2))) | |
b8a71aed | 4590 | return false; |
825b27de RG |
4591 | } |
4592 | ||
4593 | if (parms1 || parms2) | |
b8a71aed | 4594 | return false; |
825b27de | 4595 | |
b8a71aed | 4596 | return true; |
825b27de RG |
4597 | } |
4598 | ||
825b27de RG |
4599 | case RECORD_TYPE: |
4600 | case UNION_TYPE: | |
4601 | case QUAL_UNION_TYPE: | |
4602 | { | |
4603 | tree f1, f2; | |
4604 | ||
4605 | /* For aggregate types, all the fields must be the same. */ | |
4606 | for (f1 = TYPE_FIELDS (t1), f2 = TYPE_FIELDS (t2); | |
4acd1c84 | 4607 | f1 || f2; |
825b27de RG |
4608 | f1 = TREE_CHAIN (f1), f2 = TREE_CHAIN (f2)) |
4609 | { | |
e7cfe241 RG |
4610 | /* Skip non-fields. */ |
4611 | while (f1 && TREE_CODE (f1) != FIELD_DECL) | |
4612 | f1 = TREE_CHAIN (f1); | |
4613 | while (f2 && TREE_CODE (f2) != FIELD_DECL) | |
4614 | f2 = TREE_CHAIN (f2); | |
4615 | if (!f1 || !f2) | |
4616 | break; | |
825b27de RG |
4617 | /* The fields must have the same name, offset and type. */ |
4618 | if (DECL_NONADDRESSABLE_P (f1) != DECL_NONADDRESSABLE_P (f2) | |
4619 | || !gimple_compare_field_offset (f1, f2) | |
4620 | || !gimple_canonical_types_compatible_p | |
4621 | (TREE_TYPE (f1), TREE_TYPE (f2))) | |
b8a71aed | 4622 | return false; |
825b27de RG |
4623 | } |
4624 | ||
4625 | /* If one aggregate has more fields than the other, they | |
4626 | are not the same. */ | |
4627 | if (f1 || f2) | |
b8a71aed | 4628 | return false; |
825b27de | 4629 | |
b8a71aed | 4630 | return true; |
825b27de RG |
4631 | } |
4632 | ||
4633 | default: | |
4634 | gcc_unreachable (); | |
4635 | } | |
825b27de RG |
4636 | } |
4637 | ||
4638 | ||
4490cae6 RG |
4639 | /* Returns nonzero if P1 and P2 are equal. */ |
4640 | ||
4641 | static int | |
4642 | gimple_canonical_type_eq (const void *p1, const void *p2) | |
4643 | { | |
4644 | const_tree t1 = (const_tree) p1; | |
4645 | const_tree t2 = (const_tree) p2; | |
825b27de RG |
4646 | return gimple_canonical_types_compatible_p (CONST_CAST_TREE (t1), |
4647 | CONST_CAST_TREE (t2)); | |
4490cae6 RG |
4648 | } |
4649 | ||
4650 | /* Register type T in the global type table gimple_types. | |
4651 | If another type T', compatible with T, already existed in | |
4652 | gimple_types then return T', otherwise return T. This is used by | |
96d91dcf RG |
4653 | LTO to merge identical types read from different TUs. |
4654 | ||
4655 | ??? This merging does not exactly match how the tree.c middle-end | |
4656 | functions will assign TYPE_CANONICAL when new types are created | |
4657 | during optimization (which at least happens for pointer and array | |
4658 | types). */ | |
4490cae6 RG |
4659 | |
4660 | tree | |
4661 | gimple_register_canonical_type (tree t) | |
4662 | { | |
4663 | void **slot; | |
4664 | ||
4665 | gcc_assert (TYPE_P (t)); | |
4666 | ||
61332f77 RG |
4667 | if (TYPE_CANONICAL (t)) |
4668 | return TYPE_CANONICAL (t); | |
4669 | ||
4490cae6 | 4670 | if (gimple_canonical_types == NULL) |
a844a60b | 4671 | gimple_canonical_types = htab_create_ggc (16381, gimple_canonical_type_hash, |
4490cae6 RG |
4672 | gimple_canonical_type_eq, 0); |
4673 | ||
4674 | slot = htab_find_slot (gimple_canonical_types, t, INSERT); | |
4675 | if (*slot | |
4676 | && *(tree *)slot != t) | |
4677 | { | |
4678 | tree new_type = (tree) *((tree *) slot); | |
4679 | ||
4680 | TYPE_CANONICAL (t) = new_type; | |
4681 | t = new_type; | |
4682 | } | |
4683 | else | |
4684 | { | |
4685 | TYPE_CANONICAL (t) = t; | |
4a2ac96f RG |
4686 | *slot = (void *) t; |
4687 | } | |
d7f09764 DN |
4688 | |
4689 | return t; | |
4690 | } | |
4691 | ||
4692 | ||
4693 | /* Show statistics on references to the global type table gimple_types. */ | |
4694 | ||
4695 | void | |
4696 | print_gimple_types_stats (void) | |
4697 | { | |
4698 | if (gimple_types) | |
4699 | fprintf (stderr, "GIMPLE type table: size %ld, %ld elements, " | |
4700 | "%ld searches, %ld collisions (ratio: %f)\n", | |
4701 | (long) htab_size (gimple_types), | |
4702 | (long) htab_elements (gimple_types), | |
4703 | (long) gimple_types->searches, | |
4704 | (long) gimple_types->collisions, | |
4705 | htab_collisions (gimple_types)); | |
4706 | else | |
4707 | fprintf (stderr, "GIMPLE type table is empty\n"); | |
a844a60b RG |
4708 | if (type_hash_cache) |
4709 | fprintf (stderr, "GIMPLE type hash table: size %ld, %ld elements, " | |
4710 | "%ld searches, %ld collisions (ratio: %f)\n", | |
4711 | (long) htab_size (type_hash_cache), | |
4712 | (long) htab_elements (type_hash_cache), | |
4713 | (long) type_hash_cache->searches, | |
4714 | (long) type_hash_cache->collisions, | |
4715 | htab_collisions (type_hash_cache)); | |
4716 | else | |
4717 | fprintf (stderr, "GIMPLE type hash table is empty\n"); | |
4490cae6 RG |
4718 | if (gimple_canonical_types) |
4719 | fprintf (stderr, "GIMPLE canonical type table: size %ld, %ld elements, " | |
4720 | "%ld searches, %ld collisions (ratio: %f)\n", | |
4721 | (long) htab_size (gimple_canonical_types), | |
4722 | (long) htab_elements (gimple_canonical_types), | |
4723 | (long) gimple_canonical_types->searches, | |
4724 | (long) gimple_canonical_types->collisions, | |
4725 | htab_collisions (gimple_canonical_types)); | |
4726 | else | |
4727 | fprintf (stderr, "GIMPLE canonical type table is empty\n"); | |
a844a60b RG |
4728 | if (canonical_type_hash_cache) |
4729 | fprintf (stderr, "GIMPLE canonical type hash table: size %ld, %ld elements, " | |
0f443ad0 | 4730 | "%ld searches, %ld collisions (ratio: %f)\n", |
a844a60b RG |
4731 | (long) htab_size (canonical_type_hash_cache), |
4732 | (long) htab_elements (canonical_type_hash_cache), | |
4733 | (long) canonical_type_hash_cache->searches, | |
4734 | (long) canonical_type_hash_cache->collisions, | |
4735 | htab_collisions (canonical_type_hash_cache)); | |
0f443ad0 | 4736 | else |
a844a60b | 4737 | fprintf (stderr, "GIMPLE canonical type hash table is empty\n"); |
d7f09764 DN |
4738 | } |
4739 | ||
0d0bfe17 RG |
4740 | /* Free the gimple type hashtables used for LTO type merging. */ |
4741 | ||
4742 | void | |
4743 | free_gimple_type_tables (void) | |
4744 | { | |
4745 | /* Last chance to print stats for the tables. */ | |
4746 | if (flag_lto_report) | |
4747 | print_gimple_types_stats (); | |
4748 | ||
4749 | if (gimple_types) | |
4750 | { | |
4751 | htab_delete (gimple_types); | |
4752 | gimple_types = NULL; | |
4753 | } | |
4490cae6 RG |
4754 | if (gimple_canonical_types) |
4755 | { | |
4756 | htab_delete (gimple_canonical_types); | |
4757 | gimple_canonical_types = NULL; | |
4758 | } | |
0d0bfe17 RG |
4759 | if (type_hash_cache) |
4760 | { | |
0f443ad0 | 4761 | htab_delete (type_hash_cache); |
0d0bfe17 RG |
4762 | type_hash_cache = NULL; |
4763 | } | |
a844a60b RG |
4764 | if (canonical_type_hash_cache) |
4765 | { | |
4766 | htab_delete (canonical_type_hash_cache); | |
4767 | canonical_type_hash_cache = NULL; | |
4768 | } | |
a30726a4 | 4769 | if (type_pair_cache) |
0d0bfe17 | 4770 | { |
a30726a4 JH |
4771 | free (type_pair_cache); |
4772 | type_pair_cache = NULL; | |
0d0bfe17 | 4773 | } |
4490cae6 | 4774 | gimple_type_leader = NULL; |
0d0bfe17 RG |
4775 | } |
4776 | ||
d7f09764 DN |
4777 | |
4778 | /* Return a type the same as TYPE except unsigned or | |
4779 | signed according to UNSIGNEDP. */ | |
4780 | ||
4781 | static tree | |
4782 | gimple_signed_or_unsigned_type (bool unsignedp, tree type) | |
4783 | { | |
4784 | tree type1; | |
4785 | ||
4786 | type1 = TYPE_MAIN_VARIANT (type); | |
4787 | if (type1 == signed_char_type_node | |
4788 | || type1 == char_type_node | |
4789 | || type1 == unsigned_char_type_node) | |
4790 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
4791 | if (type1 == integer_type_node || type1 == unsigned_type_node) | |
4792 | return unsignedp ? unsigned_type_node : integer_type_node; | |
4793 | if (type1 == short_integer_type_node || type1 == short_unsigned_type_node) | |
4794 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
4795 | if (type1 == long_integer_type_node || type1 == long_unsigned_type_node) | |
4796 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
4797 | if (type1 == long_long_integer_type_node | |
4798 | || type1 == long_long_unsigned_type_node) | |
4799 | return unsignedp | |
4800 | ? long_long_unsigned_type_node | |
4801 | : long_long_integer_type_node; | |
a6766312 KT |
4802 | if (int128_integer_type_node && (type1 == int128_integer_type_node || type1 == int128_unsigned_type_node)) |
4803 | return unsignedp | |
4804 | ? int128_unsigned_type_node | |
4805 | : int128_integer_type_node; | |
d7f09764 DN |
4806 | #if HOST_BITS_PER_WIDE_INT >= 64 |
4807 | if (type1 == intTI_type_node || type1 == unsigned_intTI_type_node) | |
4808 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
4809 | #endif | |
4810 | if (type1 == intDI_type_node || type1 == unsigned_intDI_type_node) | |
4811 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
4812 | if (type1 == intSI_type_node || type1 == unsigned_intSI_type_node) | |
4813 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
4814 | if (type1 == intHI_type_node || type1 == unsigned_intHI_type_node) | |
4815 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
4816 | if (type1 == intQI_type_node || type1 == unsigned_intQI_type_node) | |
4817 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
4818 | ||
4819 | #define GIMPLE_FIXED_TYPES(NAME) \ | |
4820 | if (type1 == short_ ## NAME ## _type_node \ | |
4821 | || type1 == unsigned_short_ ## NAME ## _type_node) \ | |
4822 | return unsignedp ? unsigned_short_ ## NAME ## _type_node \ | |
4823 | : short_ ## NAME ## _type_node; \ | |
4824 | if (type1 == NAME ## _type_node \ | |
4825 | || type1 == unsigned_ ## NAME ## _type_node) \ | |
4826 | return unsignedp ? unsigned_ ## NAME ## _type_node \ | |
4827 | : NAME ## _type_node; \ | |
4828 | if (type1 == long_ ## NAME ## _type_node \ | |
4829 | || type1 == unsigned_long_ ## NAME ## _type_node) \ | |
4830 | return unsignedp ? unsigned_long_ ## NAME ## _type_node \ | |
4831 | : long_ ## NAME ## _type_node; \ | |
4832 | if (type1 == long_long_ ## NAME ## _type_node \ | |
4833 | || type1 == unsigned_long_long_ ## NAME ## _type_node) \ | |
4834 | return unsignedp ? unsigned_long_long_ ## NAME ## _type_node \ | |
4835 | : long_long_ ## NAME ## _type_node; | |
4836 | ||
4837 | #define GIMPLE_FIXED_MODE_TYPES(NAME) \ | |
4838 | if (type1 == NAME ## _type_node \ | |
4839 | || type1 == u ## NAME ## _type_node) \ | |
4840 | return unsignedp ? u ## NAME ## _type_node \ | |
4841 | : NAME ## _type_node; | |
4842 | ||
4843 | #define GIMPLE_FIXED_TYPES_SAT(NAME) \ | |
4844 | if (type1 == sat_ ## short_ ## NAME ## _type_node \ | |
4845 | || type1 == sat_ ## unsigned_short_ ## NAME ## _type_node) \ | |
4846 | return unsignedp ? sat_ ## unsigned_short_ ## NAME ## _type_node \ | |
4847 | : sat_ ## short_ ## NAME ## _type_node; \ | |
4848 | if (type1 == sat_ ## NAME ## _type_node \ | |
4849 | || type1 == sat_ ## unsigned_ ## NAME ## _type_node) \ | |
4850 | return unsignedp ? sat_ ## unsigned_ ## NAME ## _type_node \ | |
4851 | : sat_ ## NAME ## _type_node; \ | |
4852 | if (type1 == sat_ ## long_ ## NAME ## _type_node \ | |
4853 | || type1 == sat_ ## unsigned_long_ ## NAME ## _type_node) \ | |
4854 | return unsignedp ? sat_ ## unsigned_long_ ## NAME ## _type_node \ | |
4855 | : sat_ ## long_ ## NAME ## _type_node; \ | |
4856 | if (type1 == sat_ ## long_long_ ## NAME ## _type_node \ | |
4857 | || type1 == sat_ ## unsigned_long_long_ ## NAME ## _type_node) \ | |
4858 | return unsignedp ? sat_ ## unsigned_long_long_ ## NAME ## _type_node \ | |
4859 | : sat_ ## long_long_ ## NAME ## _type_node; | |
4860 | ||
4861 | #define GIMPLE_FIXED_MODE_TYPES_SAT(NAME) \ | |
4862 | if (type1 == sat_ ## NAME ## _type_node \ | |
4863 | || type1 == sat_ ## u ## NAME ## _type_node) \ | |
4864 | return unsignedp ? sat_ ## u ## NAME ## _type_node \ | |
4865 | : sat_ ## NAME ## _type_node; | |
4866 | ||
4867 | GIMPLE_FIXED_TYPES (fract); | |
4868 | GIMPLE_FIXED_TYPES_SAT (fract); | |
4869 | GIMPLE_FIXED_TYPES (accum); | |
4870 | GIMPLE_FIXED_TYPES_SAT (accum); | |
4871 | ||
4872 | GIMPLE_FIXED_MODE_TYPES (qq); | |
4873 | GIMPLE_FIXED_MODE_TYPES (hq); | |
4874 | GIMPLE_FIXED_MODE_TYPES (sq); | |
4875 | GIMPLE_FIXED_MODE_TYPES (dq); | |
4876 | GIMPLE_FIXED_MODE_TYPES (tq); | |
4877 | GIMPLE_FIXED_MODE_TYPES_SAT (qq); | |
4878 | GIMPLE_FIXED_MODE_TYPES_SAT (hq); | |
4879 | GIMPLE_FIXED_MODE_TYPES_SAT (sq); | |
4880 | GIMPLE_FIXED_MODE_TYPES_SAT (dq); | |
4881 | GIMPLE_FIXED_MODE_TYPES_SAT (tq); | |
4882 | GIMPLE_FIXED_MODE_TYPES (ha); | |
4883 | GIMPLE_FIXED_MODE_TYPES (sa); | |
4884 | GIMPLE_FIXED_MODE_TYPES (da); | |
4885 | GIMPLE_FIXED_MODE_TYPES (ta); | |
4886 | GIMPLE_FIXED_MODE_TYPES_SAT (ha); | |
4887 | GIMPLE_FIXED_MODE_TYPES_SAT (sa); | |
4888 | GIMPLE_FIXED_MODE_TYPES_SAT (da); | |
4889 | GIMPLE_FIXED_MODE_TYPES_SAT (ta); | |
4890 | ||
4891 | /* For ENUMERAL_TYPEs in C++, must check the mode of the types, not | |
4892 | the precision; they have precision set to match their range, but | |
4893 | may use a wider mode to match an ABI. If we change modes, we may | |
4894 | wind up with bad conversions. For INTEGER_TYPEs in C, must check | |
4895 | the precision as well, so as to yield correct results for | |
4896 | bit-field types. C++ does not have these separate bit-field | |
4897 | types, and producing a signed or unsigned variant of an | |
4898 | ENUMERAL_TYPE may cause other problems as well. */ | |
4899 | if (!INTEGRAL_TYPE_P (type) | |
4900 | || TYPE_UNSIGNED (type) == unsignedp) | |
4901 | return type; | |
4902 | ||
4903 | #define TYPE_OK(node) \ | |
4904 | (TYPE_MODE (type) == TYPE_MODE (node) \ | |
4905 | && TYPE_PRECISION (type) == TYPE_PRECISION (node)) | |
4906 | if (TYPE_OK (signed_char_type_node)) | |
4907 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
4908 | if (TYPE_OK (integer_type_node)) | |
4909 | return unsignedp ? unsigned_type_node : integer_type_node; | |
4910 | if (TYPE_OK (short_integer_type_node)) | |
4911 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
4912 | if (TYPE_OK (long_integer_type_node)) | |
4913 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
4914 | if (TYPE_OK (long_long_integer_type_node)) | |
4915 | return (unsignedp | |
4916 | ? long_long_unsigned_type_node | |
4917 | : long_long_integer_type_node); | |
a6766312 KT |
4918 | if (int128_integer_type_node && TYPE_OK (int128_integer_type_node)) |
4919 | return (unsignedp | |
4920 | ? int128_unsigned_type_node | |
4921 | : int128_integer_type_node); | |
d7f09764 DN |
4922 | |
4923 | #if HOST_BITS_PER_WIDE_INT >= 64 | |
4924 | if (TYPE_OK (intTI_type_node)) | |
4925 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
4926 | #endif | |
4927 | if (TYPE_OK (intDI_type_node)) | |
4928 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
4929 | if (TYPE_OK (intSI_type_node)) | |
4930 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
4931 | if (TYPE_OK (intHI_type_node)) | |
4932 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
4933 | if (TYPE_OK (intQI_type_node)) | |
4934 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
4935 | ||
4936 | #undef GIMPLE_FIXED_TYPES | |
4937 | #undef GIMPLE_FIXED_MODE_TYPES | |
4938 | #undef GIMPLE_FIXED_TYPES_SAT | |
4939 | #undef GIMPLE_FIXED_MODE_TYPES_SAT | |
4940 | #undef TYPE_OK | |
4941 | ||
4942 | return build_nonstandard_integer_type (TYPE_PRECISION (type), unsignedp); | |
4943 | } | |
4944 | ||
4945 | ||
4946 | /* Return an unsigned type the same as TYPE in other respects. */ | |
4947 | ||
4948 | tree | |
4949 | gimple_unsigned_type (tree type) | |
4950 | { | |
4951 | return gimple_signed_or_unsigned_type (true, type); | |
4952 | } | |
4953 | ||
4954 | ||
4955 | /* Return a signed type the same as TYPE in other respects. */ | |
4956 | ||
4957 | tree | |
4958 | gimple_signed_type (tree type) | |
4959 | { | |
4960 | return gimple_signed_or_unsigned_type (false, type); | |
4961 | } | |
4962 | ||
4963 | ||
4964 | /* Return the typed-based alias set for T, which may be an expression | |
4965 | or a type. Return -1 if we don't do anything special. */ | |
4966 | ||
4967 | alias_set_type | |
4968 | gimple_get_alias_set (tree t) | |
4969 | { | |
4970 | tree u; | |
4971 | ||
4972 | /* Permit type-punning when accessing a union, provided the access | |
4973 | is directly through the union. For example, this code does not | |
4974 | permit taking the address of a union member and then storing | |
4975 | through it. Even the type-punning allowed here is a GCC | |
4976 | extension, albeit a common and useful one; the C standard says | |
4977 | that such accesses have implementation-defined behavior. */ | |
4978 | for (u = t; | |
4979 | TREE_CODE (u) == COMPONENT_REF || TREE_CODE (u) == ARRAY_REF; | |
4980 | u = TREE_OPERAND (u, 0)) | |
4981 | if (TREE_CODE (u) == COMPONENT_REF | |
4982 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (u, 0))) == UNION_TYPE) | |
4983 | return 0; | |
4984 | ||
4985 | /* That's all the expressions we handle specially. */ | |
4986 | if (!TYPE_P (t)) | |
4987 | return -1; | |
4988 | ||
4989 | /* For convenience, follow the C standard when dealing with | |
4990 | character types. Any object may be accessed via an lvalue that | |
4991 | has character type. */ | |
4992 | if (t == char_type_node | |
4993 | || t == signed_char_type_node | |
4994 | || t == unsigned_char_type_node) | |
4995 | return 0; | |
4996 | ||
4997 | /* Allow aliasing between signed and unsigned variants of the same | |
4998 | type. We treat the signed variant as canonical. */ | |
4999 | if (TREE_CODE (t) == INTEGER_TYPE && TYPE_UNSIGNED (t)) | |
5000 | { | |
5001 | tree t1 = gimple_signed_type (t); | |
5002 | ||
5003 | /* t1 == t can happen for boolean nodes which are always unsigned. */ | |
5004 | if (t1 != t) | |
5005 | return get_alias_set (t1); | |
5006 | } | |
d7f09764 DN |
5007 | |
5008 | return -1; | |
5009 | } | |
5010 | ||
5011 | ||
5006671f RG |
5012 | /* Data structure used to count the number of dereferences to PTR |
5013 | inside an expression. */ | |
5014 | struct count_ptr_d | |
5015 | { | |
5016 | tree ptr; | |
5017 | unsigned num_stores; | |
5018 | unsigned num_loads; | |
5019 | }; | |
5020 | ||
5021 | /* Helper for count_uses_and_derefs. Called by walk_tree to look for | |
5022 | (ALIGN/MISALIGNED_)INDIRECT_REF nodes for the pointer passed in DATA. */ | |
5023 | ||
5024 | static tree | |
5025 | count_ptr_derefs (tree *tp, int *walk_subtrees, void *data) | |
5026 | { | |
5027 | struct walk_stmt_info *wi_p = (struct walk_stmt_info *) data; | |
5028 | struct count_ptr_d *count_p = (struct count_ptr_d *) wi_p->info; | |
5029 | ||
5030 | /* Do not walk inside ADDR_EXPR nodes. In the expression &ptr->fld, | |
5031 | pointer 'ptr' is *not* dereferenced, it is simply used to compute | |
5032 | the address of 'fld' as 'ptr + offsetof(fld)'. */ | |
5033 | if (TREE_CODE (*tp) == ADDR_EXPR) | |
5034 | { | |
5035 | *walk_subtrees = 0; | |
5036 | return NULL_TREE; | |
5037 | } | |
5038 | ||
70f34814 | 5039 | if (TREE_CODE (*tp) == MEM_REF && TREE_OPERAND (*tp, 0) == count_p->ptr) |
5006671f RG |
5040 | { |
5041 | if (wi_p->is_lhs) | |
5042 | count_p->num_stores++; | |
5043 | else | |
5044 | count_p->num_loads++; | |
5045 | } | |
5046 | ||
5047 | return NULL_TREE; | |
5048 | } | |
5049 | ||
5050 | /* Count the number of direct and indirect uses for pointer PTR in | |
5051 | statement STMT. The number of direct uses is stored in | |
5052 | *NUM_USES_P. Indirect references are counted separately depending | |
5053 | on whether they are store or load operations. The counts are | |
5054 | stored in *NUM_STORES_P and *NUM_LOADS_P. */ | |
5055 | ||
5056 | void | |
5057 | count_uses_and_derefs (tree ptr, gimple stmt, unsigned *num_uses_p, | |
5058 | unsigned *num_loads_p, unsigned *num_stores_p) | |
5059 | { | |
5060 | ssa_op_iter i; | |
5061 | tree use; | |
5062 | ||
5063 | *num_uses_p = 0; | |
5064 | *num_loads_p = 0; | |
5065 | *num_stores_p = 0; | |
5066 | ||
5067 | /* Find out the total number of uses of PTR in STMT. */ | |
5068 | FOR_EACH_SSA_TREE_OPERAND (use, stmt, i, SSA_OP_USE) | |
5069 | if (use == ptr) | |
5070 | (*num_uses_p)++; | |
5071 | ||
5072 | /* Now count the number of indirect references to PTR. This is | |
5073 | truly awful, but we don't have much choice. There are no parent | |
5074 | pointers inside INDIRECT_REFs, so an expression like | |
5075 | '*x_1 = foo (x_1, *x_1)' needs to be traversed piece by piece to | |
5076 | find all the indirect and direct uses of x_1 inside. The only | |
5077 | shortcut we can take is the fact that GIMPLE only allows | |
5078 | INDIRECT_REFs inside the expressions below. */ | |
5079 | if (is_gimple_assign (stmt) | |
5080 | || gimple_code (stmt) == GIMPLE_RETURN | |
5081 | || gimple_code (stmt) == GIMPLE_ASM | |
5082 | || is_gimple_call (stmt)) | |
5083 | { | |
5084 | struct walk_stmt_info wi; | |
5085 | struct count_ptr_d count; | |
5086 | ||
5087 | count.ptr = ptr; | |
5088 | count.num_stores = 0; | |
5089 | count.num_loads = 0; | |
5090 | ||
5091 | memset (&wi, 0, sizeof (wi)); | |
5092 | wi.info = &count; | |
5093 | walk_gimple_op (stmt, count_ptr_derefs, &wi); | |
5094 | ||
5095 | *num_stores_p = count.num_stores; | |
5096 | *num_loads_p = count.num_loads; | |
5097 | } | |
5098 | ||
5099 | gcc_assert (*num_uses_p >= *num_loads_p + *num_stores_p); | |
5100 | } | |
5101 | ||
346ef3fa RG |
5102 | /* From a tree operand OP return the base of a load or store operation |
5103 | or NULL_TREE if OP is not a load or a store. */ | |
5104 | ||
5105 | static tree | |
5106 | get_base_loadstore (tree op) | |
5107 | { | |
5108 | while (handled_component_p (op)) | |
5109 | op = TREE_OPERAND (op, 0); | |
5110 | if (DECL_P (op) | |
5111 | || INDIRECT_REF_P (op) | |
70f34814 | 5112 | || TREE_CODE (op) == MEM_REF |
346ef3fa RG |
5113 | || TREE_CODE (op) == TARGET_MEM_REF) |
5114 | return op; | |
5115 | return NULL_TREE; | |
5116 | } | |
5117 | ||
5118 | /* For the statement STMT call the callbacks VISIT_LOAD, VISIT_STORE and | |
5119 | VISIT_ADDR if non-NULL on loads, store and address-taken operands | |
5120 | passing the STMT, the base of the operand and DATA to it. The base | |
5121 | will be either a decl, an indirect reference (including TARGET_MEM_REF) | |
5122 | or the argument of an address expression. | |
5123 | Returns the results of these callbacks or'ed. */ | |
5124 | ||
5125 | bool | |
5126 | walk_stmt_load_store_addr_ops (gimple stmt, void *data, | |
5127 | bool (*visit_load)(gimple, tree, void *), | |
5128 | bool (*visit_store)(gimple, tree, void *), | |
5129 | bool (*visit_addr)(gimple, tree, void *)) | |
5130 | { | |
5131 | bool ret = false; | |
5132 | unsigned i; | |
5133 | if (gimple_assign_single_p (stmt)) | |
5134 | { | |
5135 | tree lhs, rhs; | |
5136 | if (visit_store) | |
5137 | { | |
5138 | lhs = get_base_loadstore (gimple_assign_lhs (stmt)); | |
5139 | if (lhs) | |
5140 | ret |= visit_store (stmt, lhs, data); | |
5141 | } | |
5142 | rhs = gimple_assign_rhs1 (stmt); | |
ad8a1ac0 RG |
5143 | while (handled_component_p (rhs)) |
5144 | rhs = TREE_OPERAND (rhs, 0); | |
346ef3fa RG |
5145 | if (visit_addr) |
5146 | { | |
5147 | if (TREE_CODE (rhs) == ADDR_EXPR) | |
5148 | ret |= visit_addr (stmt, TREE_OPERAND (rhs, 0), data); | |
5149 | else if (TREE_CODE (rhs) == TARGET_MEM_REF | |
5150 | && TREE_CODE (TMR_BASE (rhs)) == ADDR_EXPR) | |
5151 | ret |= visit_addr (stmt, TREE_OPERAND (TMR_BASE (rhs), 0), data); | |
5152 | else if (TREE_CODE (rhs) == OBJ_TYPE_REF | |
5153 | && TREE_CODE (OBJ_TYPE_REF_OBJECT (rhs)) == ADDR_EXPR) | |
5154 | ret |= visit_addr (stmt, TREE_OPERAND (OBJ_TYPE_REF_OBJECT (rhs), | |
5155 | 0), data); | |
cb3d2e33 JJ |
5156 | else if (TREE_CODE (rhs) == CONSTRUCTOR) |
5157 | { | |
5158 | unsigned int ix; | |
5159 | tree val; | |
5160 | ||
5161 | FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (rhs), ix, val) | |
5162 | if (TREE_CODE (val) == ADDR_EXPR) | |
5163 | ret |= visit_addr (stmt, TREE_OPERAND (val, 0), data); | |
5164 | else if (TREE_CODE (val) == OBJ_TYPE_REF | |
5165 | && TREE_CODE (OBJ_TYPE_REF_OBJECT (val)) == ADDR_EXPR) | |
5166 | ret |= visit_addr (stmt, | |
5167 | TREE_OPERAND (OBJ_TYPE_REF_OBJECT (val), | |
5168 | 0), data); | |
5169 | } | |
fff1894c AB |
5170 | lhs = gimple_assign_lhs (stmt); |
5171 | if (TREE_CODE (lhs) == TARGET_MEM_REF | |
fff1894c AB |
5172 | && TREE_CODE (TMR_BASE (lhs)) == ADDR_EXPR) |
5173 | ret |= visit_addr (stmt, TREE_OPERAND (TMR_BASE (lhs), 0), data); | |
346ef3fa RG |
5174 | } |
5175 | if (visit_load) | |
5176 | { | |
5177 | rhs = get_base_loadstore (rhs); | |
5178 | if (rhs) | |
5179 | ret |= visit_load (stmt, rhs, data); | |
5180 | } | |
5181 | } | |
5182 | else if (visit_addr | |
5183 | && (is_gimple_assign (stmt) | |
4d7a65ea | 5184 | || gimple_code (stmt) == GIMPLE_COND)) |
346ef3fa RG |
5185 | { |
5186 | for (i = 0; i < gimple_num_ops (stmt); ++i) | |
9dd58aa4 JJ |
5187 | { |
5188 | tree op = gimple_op (stmt, i); | |
5189 | if (op == NULL_TREE) | |
5190 | ; | |
5191 | else if (TREE_CODE (op) == ADDR_EXPR) | |
5192 | ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data); | |
5193 | /* COND_EXPR and VCOND_EXPR rhs1 argument is a comparison | |
5194 | tree with two operands. */ | |
5195 | else if (i == 1 && COMPARISON_CLASS_P (op)) | |
5196 | { | |
5197 | if (TREE_CODE (TREE_OPERAND (op, 0)) == ADDR_EXPR) | |
5198 | ret |= visit_addr (stmt, TREE_OPERAND (TREE_OPERAND (op, 0), | |
5199 | 0), data); | |
5200 | if (TREE_CODE (TREE_OPERAND (op, 1)) == ADDR_EXPR) | |
5201 | ret |= visit_addr (stmt, TREE_OPERAND (TREE_OPERAND (op, 1), | |
5202 | 0), data); | |
5203 | } | |
5204 | } | |
346ef3fa RG |
5205 | } |
5206 | else if (is_gimple_call (stmt)) | |
5207 | { | |
5208 | if (visit_store) | |
5209 | { | |
5210 | tree lhs = gimple_call_lhs (stmt); | |
5211 | if (lhs) | |
5212 | { | |
5213 | lhs = get_base_loadstore (lhs); | |
5214 | if (lhs) | |
5215 | ret |= visit_store (stmt, lhs, data); | |
5216 | } | |
5217 | } | |
5218 | if (visit_load || visit_addr) | |
5219 | for (i = 0; i < gimple_call_num_args (stmt); ++i) | |
5220 | { | |
5221 | tree rhs = gimple_call_arg (stmt, i); | |
5222 | if (visit_addr | |
5223 | && TREE_CODE (rhs) == ADDR_EXPR) | |
5224 | ret |= visit_addr (stmt, TREE_OPERAND (rhs, 0), data); | |
5225 | else if (visit_load) | |
5226 | { | |
5227 | rhs = get_base_loadstore (rhs); | |
5228 | if (rhs) | |
5229 | ret |= visit_load (stmt, rhs, data); | |
5230 | } | |
5231 | } | |
5232 | if (visit_addr | |
5233 | && gimple_call_chain (stmt) | |
5234 | && TREE_CODE (gimple_call_chain (stmt)) == ADDR_EXPR) | |
5235 | ret |= visit_addr (stmt, TREE_OPERAND (gimple_call_chain (stmt), 0), | |
5236 | data); | |
1d24fdd9 RG |
5237 | if (visit_addr |
5238 | && gimple_call_return_slot_opt_p (stmt) | |
5239 | && gimple_call_lhs (stmt) != NULL_TREE | |
4d61856d | 5240 | && TREE_ADDRESSABLE (TREE_TYPE (gimple_call_lhs (stmt)))) |
1d24fdd9 | 5241 | ret |= visit_addr (stmt, gimple_call_lhs (stmt), data); |
346ef3fa RG |
5242 | } |
5243 | else if (gimple_code (stmt) == GIMPLE_ASM) | |
5244 | { | |
5245 | unsigned noutputs; | |
5246 | const char *constraint; | |
5247 | const char **oconstraints; | |
5248 | bool allows_mem, allows_reg, is_inout; | |
5249 | noutputs = gimple_asm_noutputs (stmt); | |
5250 | oconstraints = XALLOCAVEC (const char *, noutputs); | |
5251 | if (visit_store || visit_addr) | |
5252 | for (i = 0; i < gimple_asm_noutputs (stmt); ++i) | |
5253 | { | |
5254 | tree link = gimple_asm_output_op (stmt, i); | |
5255 | tree op = get_base_loadstore (TREE_VALUE (link)); | |
5256 | if (op && visit_store) | |
5257 | ret |= visit_store (stmt, op, data); | |
5258 | if (visit_addr) | |
5259 | { | |
5260 | constraint = TREE_STRING_POINTER | |
5261 | (TREE_VALUE (TREE_PURPOSE (link))); | |
5262 | oconstraints[i] = constraint; | |
5263 | parse_output_constraint (&constraint, i, 0, 0, &allows_mem, | |
5264 | &allows_reg, &is_inout); | |
5265 | if (op && !allows_reg && allows_mem) | |
5266 | ret |= visit_addr (stmt, op, data); | |
5267 | } | |
5268 | } | |
5269 | if (visit_load || visit_addr) | |
5270 | for (i = 0; i < gimple_asm_ninputs (stmt); ++i) | |
5271 | { | |
5272 | tree link = gimple_asm_input_op (stmt, i); | |
5273 | tree op = TREE_VALUE (link); | |
5274 | if (visit_addr | |
5275 | && TREE_CODE (op) == ADDR_EXPR) | |
5276 | ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data); | |
5277 | else if (visit_load || visit_addr) | |
5278 | { | |
5279 | op = get_base_loadstore (op); | |
5280 | if (op) | |
5281 | { | |
5282 | if (visit_load) | |
5283 | ret |= visit_load (stmt, op, data); | |
5284 | if (visit_addr) | |
5285 | { | |
5286 | constraint = TREE_STRING_POINTER | |
5287 | (TREE_VALUE (TREE_PURPOSE (link))); | |
5288 | parse_input_constraint (&constraint, 0, 0, noutputs, | |
5289 | 0, oconstraints, | |
5290 | &allows_mem, &allows_reg); | |
5291 | if (!allows_reg && allows_mem) | |
5292 | ret |= visit_addr (stmt, op, data); | |
5293 | } | |
5294 | } | |
5295 | } | |
5296 | } | |
5297 | } | |
5298 | else if (gimple_code (stmt) == GIMPLE_RETURN) | |
5299 | { | |
5300 | tree op = gimple_return_retval (stmt); | |
5301 | if (op) | |
5302 | { | |
5303 | if (visit_addr | |
5304 | && TREE_CODE (op) == ADDR_EXPR) | |
5305 | ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data); | |
5306 | else if (visit_load) | |
5307 | { | |
5308 | op = get_base_loadstore (op); | |
5309 | if (op) | |
5310 | ret |= visit_load (stmt, op, data); | |
5311 | } | |
5312 | } | |
5313 | } | |
5314 | else if (visit_addr | |
5315 | && gimple_code (stmt) == GIMPLE_PHI) | |
5316 | { | |
5317 | for (i = 0; i < gimple_phi_num_args (stmt); ++i) | |
5318 | { | |
5319 | tree op = PHI_ARG_DEF (stmt, i); | |
5320 | if (TREE_CODE (op) == ADDR_EXPR) | |
5321 | ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data); | |
5322 | } | |
5323 | } | |
5324 | ||
5325 | return ret; | |
5326 | } | |
5327 | ||
5328 | /* Like walk_stmt_load_store_addr_ops but with NULL visit_addr. IPA-CP | |
5329 | should make a faster clone for this case. */ | |
5330 | ||
5331 | bool | |
5332 | walk_stmt_load_store_ops (gimple stmt, void *data, | |
5333 | bool (*visit_load)(gimple, tree, void *), | |
5334 | bool (*visit_store)(gimple, tree, void *)) | |
5335 | { | |
5336 | return walk_stmt_load_store_addr_ops (stmt, data, | |
5337 | visit_load, visit_store, NULL); | |
5338 | } | |
5339 | ||
ccacdf06 RG |
5340 | /* Helper for gimple_ior_addresses_taken_1. */ |
5341 | ||
5342 | static bool | |
5343 | gimple_ior_addresses_taken_1 (gimple stmt ATTRIBUTE_UNUSED, | |
5344 | tree addr, void *data) | |
5345 | { | |
5346 | bitmap addresses_taken = (bitmap)data; | |
2ea9dc64 RG |
5347 | addr = get_base_address (addr); |
5348 | if (addr | |
5349 | && DECL_P (addr)) | |
ccacdf06 RG |
5350 | { |
5351 | bitmap_set_bit (addresses_taken, DECL_UID (addr)); | |
5352 | return true; | |
5353 | } | |
5354 | return false; | |
5355 | } | |
5356 | ||
5357 | /* Set the bit for the uid of all decls that have their address taken | |
5358 | in STMT in the ADDRESSES_TAKEN bitmap. Returns true if there | |
5359 | were any in this stmt. */ | |
5360 | ||
5361 | bool | |
5362 | gimple_ior_addresses_taken (bitmap addresses_taken, gimple stmt) | |
5363 | { | |
5364 | return walk_stmt_load_store_addr_ops (stmt, addresses_taken, NULL, NULL, | |
5365 | gimple_ior_addresses_taken_1); | |
5366 | } | |
5367 | ||
4537ec0c DN |
5368 | |
5369 | /* Return a printable name for symbol DECL. */ | |
5370 | ||
5371 | const char * | |
5372 | gimple_decl_printable_name (tree decl, int verbosity) | |
5373 | { | |
98b2dfbb RG |
5374 | if (!DECL_NAME (decl)) |
5375 | return NULL; | |
4537ec0c DN |
5376 | |
5377 | if (DECL_ASSEMBLER_NAME_SET_P (decl)) | |
5378 | { | |
5379 | const char *str, *mangled_str; | |
5380 | int dmgl_opts = DMGL_NO_OPTS; | |
5381 | ||
5382 | if (verbosity >= 2) | |
5383 | { | |
5384 | dmgl_opts = DMGL_VERBOSE | |
4537ec0c DN |
5385 | | DMGL_ANSI |
5386 | | DMGL_GNU_V3 | |
5387 | | DMGL_RET_POSTFIX; | |
5388 | if (TREE_CODE (decl) == FUNCTION_DECL) | |
5389 | dmgl_opts |= DMGL_PARAMS; | |
5390 | } | |
5391 | ||
5392 | mangled_str = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); | |
5393 | str = cplus_demangle_v3 (mangled_str, dmgl_opts); | |
5394 | return (str) ? str : mangled_str; | |
5395 | } | |
5396 | ||
5397 | return IDENTIFIER_POINTER (DECL_NAME (decl)); | |
5398 | } | |
5399 | ||
c54c785d JH |
5400 | /* Return true when STMT is builtins call to CODE. */ |
5401 | ||
5402 | bool | |
5403 | gimple_call_builtin_p (gimple stmt, enum built_in_function code) | |
5404 | { | |
5405 | tree fndecl; | |
5406 | return (is_gimple_call (stmt) | |
5407 | && (fndecl = gimple_call_fndecl (stmt)) != NULL | |
5408 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
5409 | && DECL_FUNCTION_CODE (fndecl) == code); | |
5410 | } | |
5411 | ||
edcdea5b NF |
5412 | /* Return true if STMT clobbers memory. STMT is required to be a |
5413 | GIMPLE_ASM. */ | |
5414 | ||
5415 | bool | |
5416 | gimple_asm_clobbers_memory_p (const_gimple stmt) | |
5417 | { | |
5418 | unsigned i; | |
5419 | ||
5420 | for (i = 0; i < gimple_asm_nclobbers (stmt); i++) | |
5421 | { | |
5422 | tree op = gimple_asm_clobber_op (stmt, i); | |
5423 | if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op)), "memory") == 0) | |
5424 | return true; | |
5425 | } | |
5426 | ||
5427 | return false; | |
5428 | } | |
726a989a | 5429 | #include "gt-gimple.h" |