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726a989a RB |
1 | /* Gimple IR support functions. |
2 | ||
ddb555ed | 3 | Copyright 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
726a989a RB |
4 | Contributed by Aldy Hernandez <aldyh@redhat.com> |
5 | ||
6 | This file is part of GCC. | |
7 | ||
8 | GCC is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 3, or (at your option) any later | |
11 | version. | |
12 | ||
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GCC; see the file COPYING3. If not see | |
20 | <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | #include "config.h" | |
23 | #include "system.h" | |
24 | #include "coretypes.h" | |
25 | #include "tm.h" | |
d7f09764 | 26 | #include "target.h" |
726a989a RB |
27 | #include "tree.h" |
28 | #include "ggc.h" | |
726a989a RB |
29 | #include "hard-reg-set.h" |
30 | #include "basic-block.h" | |
31 | #include "gimple.h" | |
32 | #include "diagnostic.h" | |
33 | #include "tree-flow.h" | |
34 | #include "value-prof.h" | |
35 | #include "flags.h" | |
d7f09764 | 36 | #include "alias.h" |
4537ec0c | 37 | #include "demangle.h" |
0f443ad0 | 38 | #include "langhooks.h" |
726a989a | 39 | |
d7f09764 DN |
40 | /* Global type table. FIXME lto, it should be possible to re-use some |
41 | of the type hashing routines in tree.c (type_hash_canon, type_hash_lookup, | |
42 | etc), but those assume that types were built with the various | |
43 | build_*_type routines which is not the case with the streamer. */ | |
0f443ad0 RG |
44 | static GTY((if_marked ("ggc_marked_p"), param_is (union tree_node))) |
45 | htab_t gimple_types; | |
4490cae6 RG |
46 | static GTY((if_marked ("ggc_marked_p"), param_is (union tree_node))) |
47 | htab_t gimple_canonical_types; | |
0f443ad0 RG |
48 | static GTY((if_marked ("tree_int_map_marked_p"), param_is (struct tree_int_map))) |
49 | htab_t type_hash_cache; | |
a844a60b RG |
50 | static GTY((if_marked ("tree_int_map_marked_p"), param_is (struct tree_int_map))) |
51 | htab_t canonical_type_hash_cache; | |
d7f09764 | 52 | |
f2c4a81c | 53 | /* All the tuples have their operand vector (if present) at the very bottom |
726a989a RB |
54 | of the structure. Therefore, the offset required to find the |
55 | operands vector the size of the structure minus the size of the 1 | |
56 | element tree array at the end (see gimple_ops). */ | |
f2c4a81c RH |
57 | #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) \ |
58 | (HAS_TREE_OP ? sizeof (struct STRUCT) - sizeof (tree) : 0), | |
6bc7bc14 | 59 | EXPORTED_CONST size_t gimple_ops_offset_[] = { |
f2c4a81c RH |
60 | #include "gsstruct.def" |
61 | }; | |
62 | #undef DEFGSSTRUCT | |
63 | ||
64 | #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) sizeof(struct STRUCT), | |
65 | static const size_t gsstruct_code_size[] = { | |
66 | #include "gsstruct.def" | |
67 | }; | |
68 | #undef DEFGSSTRUCT | |
69 | ||
70 | #define DEFGSCODE(SYM, NAME, GSSCODE) NAME, | |
71 | const char *const gimple_code_name[] = { | |
72 | #include "gimple.def" | |
73 | }; | |
74 | #undef DEFGSCODE | |
75 | ||
76 | #define DEFGSCODE(SYM, NAME, GSSCODE) GSSCODE, | |
77 | EXPORTED_CONST enum gimple_statement_structure_enum gss_for_code_[] = { | |
726a989a RB |
78 | #include "gimple.def" |
79 | }; | |
80 | #undef DEFGSCODE | |
81 | ||
726a989a RB |
82 | /* Gimple stats. */ |
83 | ||
84 | int gimple_alloc_counts[(int) gimple_alloc_kind_all]; | |
85 | int gimple_alloc_sizes[(int) gimple_alloc_kind_all]; | |
86 | ||
87 | /* Keep in sync with gimple.h:enum gimple_alloc_kind. */ | |
88 | static const char * const gimple_alloc_kind_names[] = { | |
89 | "assignments", | |
90 | "phi nodes", | |
91 | "conditionals", | |
726a989a RB |
92 | "everything else" |
93 | }; | |
94 | ||
726a989a RB |
95 | /* Private API manipulation functions shared only with some |
96 | other files. */ | |
97 | extern void gimple_set_stored_syms (gimple, bitmap, bitmap_obstack *); | |
98 | extern void gimple_set_loaded_syms (gimple, bitmap, bitmap_obstack *); | |
99 | ||
100 | /* Gimple tuple constructors. | |
101 | Note: Any constructor taking a ``gimple_seq'' as a parameter, can | |
102 | be passed a NULL to start with an empty sequence. */ | |
103 | ||
104 | /* Set the code for statement G to CODE. */ | |
105 | ||
106 | static inline void | |
107 | gimple_set_code (gimple g, enum gimple_code code) | |
108 | { | |
109 | g->gsbase.code = code; | |
110 | } | |
111 | ||
726a989a RB |
112 | /* Return the number of bytes needed to hold a GIMPLE statement with |
113 | code CODE. */ | |
114 | ||
f2c4a81c | 115 | static inline size_t |
726a989a RB |
116 | gimple_size (enum gimple_code code) |
117 | { | |
f2c4a81c | 118 | return gsstruct_code_size[gss_for_code (code)]; |
726a989a RB |
119 | } |
120 | ||
726a989a RB |
121 | /* Allocate memory for a GIMPLE statement with code CODE and NUM_OPS |
122 | operands. */ | |
123 | ||
d7f09764 | 124 | gimple |
726a989a RB |
125 | gimple_alloc_stat (enum gimple_code code, unsigned num_ops MEM_STAT_DECL) |
126 | { | |
127 | size_t size; | |
128 | gimple stmt; | |
129 | ||
130 | size = gimple_size (code); | |
131 | if (num_ops > 0) | |
132 | size += sizeof (tree) * (num_ops - 1); | |
133 | ||
7aa6d18a SB |
134 | if (GATHER_STATISTICS) |
135 | { | |
136 | enum gimple_alloc_kind kind = gimple_alloc_kind (code); | |
137 | gimple_alloc_counts[(int) kind]++; | |
138 | gimple_alloc_sizes[(int) kind] += size; | |
139 | } | |
726a989a | 140 | |
a9429e29 | 141 | stmt = ggc_alloc_cleared_gimple_statement_d_stat (size PASS_MEM_STAT); |
726a989a RB |
142 | gimple_set_code (stmt, code); |
143 | gimple_set_num_ops (stmt, num_ops); | |
144 | ||
145 | /* Do not call gimple_set_modified here as it has other side | |
146 | effects and this tuple is still not completely built. */ | |
147 | stmt->gsbase.modified = 1; | |
355a7673 | 148 | gimple_init_singleton (stmt); |
726a989a RB |
149 | |
150 | return stmt; | |
151 | } | |
152 | ||
153 | /* Set SUBCODE to be the code of the expression computed by statement G. */ | |
154 | ||
155 | static inline void | |
156 | gimple_set_subcode (gimple g, unsigned subcode) | |
157 | { | |
158 | /* We only have 16 bits for the RHS code. Assert that we are not | |
159 | overflowing it. */ | |
160 | gcc_assert (subcode < (1 << 16)); | |
161 | g->gsbase.subcode = subcode; | |
162 | } | |
163 | ||
164 | ||
165 | ||
166 | /* Build a tuple with operands. CODE is the statement to build (which | |
167 | must be one of the GIMPLE_WITH_OPS tuples). SUBCODE is the sub-code | |
b8698a0f | 168 | for the new tuple. NUM_OPS is the number of operands to allocate. */ |
726a989a RB |
169 | |
170 | #define gimple_build_with_ops(c, s, n) \ | |
171 | gimple_build_with_ops_stat (c, s, n MEM_STAT_INFO) | |
172 | ||
173 | static gimple | |
b5b8b0ac | 174 | gimple_build_with_ops_stat (enum gimple_code code, unsigned subcode, |
726a989a RB |
175 | unsigned num_ops MEM_STAT_DECL) |
176 | { | |
177 | gimple s = gimple_alloc_stat (code, num_ops PASS_MEM_STAT); | |
178 | gimple_set_subcode (s, subcode); | |
179 | ||
180 | return s; | |
181 | } | |
182 | ||
183 | ||
184 | /* Build a GIMPLE_RETURN statement returning RETVAL. */ | |
185 | ||
186 | gimple | |
187 | gimple_build_return (tree retval) | |
188 | { | |
bbbbb16a | 189 | gimple s = gimple_build_with_ops (GIMPLE_RETURN, ERROR_MARK, 1); |
726a989a RB |
190 | if (retval) |
191 | gimple_return_set_retval (s, retval); | |
192 | return s; | |
193 | } | |
194 | ||
d086d311 RG |
195 | /* Reset alias information on call S. */ |
196 | ||
197 | void | |
198 | gimple_call_reset_alias_info (gimple s) | |
199 | { | |
200 | if (gimple_call_flags (s) & ECF_CONST) | |
201 | memset (gimple_call_use_set (s), 0, sizeof (struct pt_solution)); | |
202 | else | |
203 | pt_solution_reset (gimple_call_use_set (s)); | |
204 | if (gimple_call_flags (s) & (ECF_CONST|ECF_PURE|ECF_NOVOPS)) | |
205 | memset (gimple_call_clobber_set (s), 0, sizeof (struct pt_solution)); | |
206 | else | |
207 | pt_solution_reset (gimple_call_clobber_set (s)); | |
208 | } | |
209 | ||
21860814 JJ |
210 | /* Helper for gimple_build_call, gimple_build_call_valist, |
211 | gimple_build_call_vec and gimple_build_call_from_tree. Build the basic | |
212 | components of a GIMPLE_CALL statement to function FN with NARGS | |
213 | arguments. */ | |
726a989a RB |
214 | |
215 | static inline gimple | |
216 | gimple_build_call_1 (tree fn, unsigned nargs) | |
217 | { | |
bbbbb16a | 218 | gimple s = gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, nargs + 3); |
7c9577be RG |
219 | if (TREE_CODE (fn) == FUNCTION_DECL) |
220 | fn = build_fold_addr_expr (fn); | |
726a989a | 221 | gimple_set_op (s, 1, fn); |
f20ca725 | 222 | gimple_call_set_fntype (s, TREE_TYPE (TREE_TYPE (fn))); |
d086d311 | 223 | gimple_call_reset_alias_info (s); |
726a989a RB |
224 | return s; |
225 | } | |
226 | ||
227 | ||
228 | /* Build a GIMPLE_CALL statement to function FN with the arguments | |
229 | specified in vector ARGS. */ | |
230 | ||
231 | gimple | |
232 | gimple_build_call_vec (tree fn, VEC(tree, heap) *args) | |
233 | { | |
234 | unsigned i; | |
235 | unsigned nargs = VEC_length (tree, args); | |
236 | gimple call = gimple_build_call_1 (fn, nargs); | |
237 | ||
238 | for (i = 0; i < nargs; i++) | |
239 | gimple_call_set_arg (call, i, VEC_index (tree, args, i)); | |
240 | ||
241 | return call; | |
242 | } | |
243 | ||
244 | ||
245 | /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of | |
246 | arguments. The ... are the arguments. */ | |
247 | ||
248 | gimple | |
249 | gimple_build_call (tree fn, unsigned nargs, ...) | |
250 | { | |
251 | va_list ap; | |
252 | gimple call; | |
253 | unsigned i; | |
254 | ||
255 | gcc_assert (TREE_CODE (fn) == FUNCTION_DECL || is_gimple_call_addr (fn)); | |
256 | ||
257 | call = gimple_build_call_1 (fn, nargs); | |
258 | ||
259 | va_start (ap, nargs); | |
260 | for (i = 0; i < nargs; i++) | |
261 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
262 | va_end (ap); | |
263 | ||
264 | return call; | |
265 | } | |
266 | ||
267 | ||
21860814 JJ |
268 | /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of |
269 | arguments. AP contains the arguments. */ | |
270 | ||
271 | gimple | |
272 | gimple_build_call_valist (tree fn, unsigned nargs, va_list ap) | |
273 | { | |
274 | gimple call; | |
275 | unsigned i; | |
276 | ||
277 | gcc_assert (TREE_CODE (fn) == FUNCTION_DECL || is_gimple_call_addr (fn)); | |
278 | ||
279 | call = gimple_build_call_1 (fn, nargs); | |
280 | ||
281 | for (i = 0; i < nargs; i++) | |
282 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
283 | ||
284 | return call; | |
285 | } | |
286 | ||
287 | ||
25583c4f RS |
288 | /* Helper for gimple_build_call_internal and gimple_build_call_internal_vec. |
289 | Build the basic components of a GIMPLE_CALL statement to internal | |
290 | function FN with NARGS arguments. */ | |
291 | ||
292 | static inline gimple | |
293 | gimple_build_call_internal_1 (enum internal_fn fn, unsigned nargs) | |
294 | { | |
295 | gimple s = gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, nargs + 3); | |
296 | s->gsbase.subcode |= GF_CALL_INTERNAL; | |
297 | gimple_call_set_internal_fn (s, fn); | |
298 | gimple_call_reset_alias_info (s); | |
299 | return s; | |
300 | } | |
301 | ||
302 | ||
303 | /* Build a GIMPLE_CALL statement to internal function FN. NARGS is | |
304 | the number of arguments. The ... are the arguments. */ | |
305 | ||
306 | gimple | |
307 | gimple_build_call_internal (enum internal_fn fn, unsigned nargs, ...) | |
308 | { | |
309 | va_list ap; | |
310 | gimple call; | |
311 | unsigned i; | |
312 | ||
313 | call = gimple_build_call_internal_1 (fn, nargs); | |
314 | va_start (ap, nargs); | |
315 | for (i = 0; i < nargs; i++) | |
316 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
317 | va_end (ap); | |
318 | ||
319 | return call; | |
320 | } | |
321 | ||
322 | ||
323 | /* Build a GIMPLE_CALL statement to internal function FN with the arguments | |
324 | specified in vector ARGS. */ | |
325 | ||
326 | gimple | |
327 | gimple_build_call_internal_vec (enum internal_fn fn, VEC(tree, heap) *args) | |
328 | { | |
329 | unsigned i, nargs; | |
330 | gimple call; | |
331 | ||
332 | nargs = VEC_length (tree, args); | |
333 | call = gimple_build_call_internal_1 (fn, nargs); | |
334 | for (i = 0; i < nargs; i++) | |
335 | gimple_call_set_arg (call, i, VEC_index (tree, args, i)); | |
336 | ||
337 | return call; | |
338 | } | |
339 | ||
340 | ||
726a989a RB |
341 | /* Build a GIMPLE_CALL statement from CALL_EXPR T. Note that T is |
342 | assumed to be in GIMPLE form already. Minimal checking is done of | |
343 | this fact. */ | |
344 | ||
345 | gimple | |
346 | gimple_build_call_from_tree (tree t) | |
347 | { | |
348 | unsigned i, nargs; | |
349 | gimple call; | |
350 | tree fndecl = get_callee_fndecl (t); | |
351 | ||
352 | gcc_assert (TREE_CODE (t) == CALL_EXPR); | |
353 | ||
354 | nargs = call_expr_nargs (t); | |
355 | call = gimple_build_call_1 (fndecl ? fndecl : CALL_EXPR_FN (t), nargs); | |
356 | ||
357 | for (i = 0; i < nargs; i++) | |
358 | gimple_call_set_arg (call, i, CALL_EXPR_ARG (t, i)); | |
359 | ||
360 | gimple_set_block (call, TREE_BLOCK (t)); | |
361 | ||
362 | /* Carry all the CALL_EXPR flags to the new GIMPLE_CALL. */ | |
363 | gimple_call_set_chain (call, CALL_EXPR_STATIC_CHAIN (t)); | |
364 | gimple_call_set_tail (call, CALL_EXPR_TAILCALL (t)); | |
726a989a | 365 | gimple_call_set_return_slot_opt (call, CALL_EXPR_RETURN_SLOT_OPT (t)); |
63d2a353 MM |
366 | if (fndecl |
367 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
13e49da9 TV |
368 | && (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_ALLOCA |
369 | || DECL_FUNCTION_CODE (fndecl) == BUILT_IN_ALLOCA_WITH_ALIGN)) | |
63d2a353 MM |
370 | gimple_call_set_alloca_for_var (call, CALL_ALLOCA_FOR_VAR_P (t)); |
371 | else | |
372 | gimple_call_set_from_thunk (call, CALL_FROM_THUNK_P (t)); | |
726a989a | 373 | gimple_call_set_va_arg_pack (call, CALL_EXPR_VA_ARG_PACK (t)); |
9bb1a81b | 374 | gimple_call_set_nothrow (call, TREE_NOTHROW (t)); |
d665b6e5 | 375 | gimple_set_no_warning (call, TREE_NO_WARNING (t)); |
726a989a RB |
376 | |
377 | return call; | |
378 | } | |
379 | ||
380 | ||
381 | /* Extract the operands and code for expression EXPR into *SUBCODE_P, | |
0354c0c7 | 382 | *OP1_P, *OP2_P and *OP3_P respectively. */ |
726a989a RB |
383 | |
384 | void | |
0354c0c7 BS |
385 | extract_ops_from_tree_1 (tree expr, enum tree_code *subcode_p, tree *op1_p, |
386 | tree *op2_p, tree *op3_p) | |
726a989a | 387 | { |
82d6e6fc | 388 | enum gimple_rhs_class grhs_class; |
726a989a RB |
389 | |
390 | *subcode_p = TREE_CODE (expr); | |
82d6e6fc | 391 | grhs_class = get_gimple_rhs_class (*subcode_p); |
726a989a | 392 | |
0354c0c7 | 393 | if (grhs_class == GIMPLE_TERNARY_RHS) |
726a989a RB |
394 | { |
395 | *op1_p = TREE_OPERAND (expr, 0); | |
396 | *op2_p = TREE_OPERAND (expr, 1); | |
0354c0c7 BS |
397 | *op3_p = TREE_OPERAND (expr, 2); |
398 | } | |
399 | else if (grhs_class == GIMPLE_BINARY_RHS) | |
400 | { | |
401 | *op1_p = TREE_OPERAND (expr, 0); | |
402 | *op2_p = TREE_OPERAND (expr, 1); | |
403 | *op3_p = NULL_TREE; | |
726a989a | 404 | } |
82d6e6fc | 405 | else if (grhs_class == GIMPLE_UNARY_RHS) |
726a989a RB |
406 | { |
407 | *op1_p = TREE_OPERAND (expr, 0); | |
408 | *op2_p = NULL_TREE; | |
0354c0c7 | 409 | *op3_p = NULL_TREE; |
726a989a | 410 | } |
82d6e6fc | 411 | else if (grhs_class == GIMPLE_SINGLE_RHS) |
726a989a RB |
412 | { |
413 | *op1_p = expr; | |
414 | *op2_p = NULL_TREE; | |
0354c0c7 | 415 | *op3_p = NULL_TREE; |
726a989a RB |
416 | } |
417 | else | |
418 | gcc_unreachable (); | |
419 | } | |
420 | ||
421 | ||
422 | /* Build a GIMPLE_ASSIGN statement. | |
423 | ||
424 | LHS of the assignment. | |
425 | RHS of the assignment which can be unary or binary. */ | |
426 | ||
427 | gimple | |
428 | gimple_build_assign_stat (tree lhs, tree rhs MEM_STAT_DECL) | |
429 | { | |
430 | enum tree_code subcode; | |
0354c0c7 | 431 | tree op1, op2, op3; |
726a989a | 432 | |
0354c0c7 BS |
433 | extract_ops_from_tree_1 (rhs, &subcode, &op1, &op2, &op3); |
434 | return gimple_build_assign_with_ops_stat (subcode, lhs, op1, op2, op3 | |
726a989a RB |
435 | PASS_MEM_STAT); |
436 | } | |
437 | ||
438 | ||
439 | /* Build a GIMPLE_ASSIGN statement with sub-code SUBCODE and operands | |
440 | OP1 and OP2. If OP2 is NULL then SUBCODE must be of class | |
441 | GIMPLE_UNARY_RHS or GIMPLE_SINGLE_RHS. */ | |
442 | ||
443 | gimple | |
444 | gimple_build_assign_with_ops_stat (enum tree_code subcode, tree lhs, tree op1, | |
0354c0c7 | 445 | tree op2, tree op3 MEM_STAT_DECL) |
726a989a RB |
446 | { |
447 | unsigned num_ops; | |
448 | gimple p; | |
449 | ||
450 | /* Need 1 operand for LHS and 1 or 2 for the RHS (depending on the | |
451 | code). */ | |
452 | num_ops = get_gimple_rhs_num_ops (subcode) + 1; | |
b8698a0f | 453 | |
b5b8b0ac | 454 | p = gimple_build_with_ops_stat (GIMPLE_ASSIGN, (unsigned)subcode, num_ops |
726a989a RB |
455 | PASS_MEM_STAT); |
456 | gimple_assign_set_lhs (p, lhs); | |
457 | gimple_assign_set_rhs1 (p, op1); | |
458 | if (op2) | |
459 | { | |
460 | gcc_assert (num_ops > 2); | |
461 | gimple_assign_set_rhs2 (p, op2); | |
462 | } | |
463 | ||
0354c0c7 BS |
464 | if (op3) |
465 | { | |
466 | gcc_assert (num_ops > 3); | |
467 | gimple_assign_set_rhs3 (p, op3); | |
468 | } | |
469 | ||
726a989a RB |
470 | return p; |
471 | } | |
472 | ||
473 | ||
474 | /* Build a new GIMPLE_ASSIGN tuple and append it to the end of *SEQ_P. | |
475 | ||
476 | DST/SRC are the destination and source respectively. You can pass | |
477 | ungimplified trees in DST or SRC, in which case they will be | |
478 | converted to a gimple operand if necessary. | |
479 | ||
480 | This function returns the newly created GIMPLE_ASSIGN tuple. */ | |
481 | ||
5fd8300b | 482 | gimple |
726a989a | 483 | gimplify_assign (tree dst, tree src, gimple_seq *seq_p) |
b8698a0f | 484 | { |
726a989a RB |
485 | tree t = build2 (MODIFY_EXPR, TREE_TYPE (dst), dst, src); |
486 | gimplify_and_add (t, seq_p); | |
487 | ggc_free (t); | |
488 | return gimple_seq_last_stmt (*seq_p); | |
489 | } | |
490 | ||
491 | ||
492 | /* Build a GIMPLE_COND statement. | |
493 | ||
494 | PRED is the condition used to compare LHS and the RHS. | |
495 | T_LABEL is the label to jump to if the condition is true. | |
496 | F_LABEL is the label to jump to otherwise. */ | |
497 | ||
498 | gimple | |
499 | gimple_build_cond (enum tree_code pred_code, tree lhs, tree rhs, | |
500 | tree t_label, tree f_label) | |
501 | { | |
502 | gimple p; | |
503 | ||
504 | gcc_assert (TREE_CODE_CLASS (pred_code) == tcc_comparison); | |
505 | p = gimple_build_with_ops (GIMPLE_COND, pred_code, 4); | |
506 | gimple_cond_set_lhs (p, lhs); | |
507 | gimple_cond_set_rhs (p, rhs); | |
508 | gimple_cond_set_true_label (p, t_label); | |
509 | gimple_cond_set_false_label (p, f_label); | |
510 | return p; | |
511 | } | |
512 | ||
513 | ||
514 | /* Extract operands for a GIMPLE_COND statement out of COND_EXPR tree COND. */ | |
515 | ||
516 | void | |
517 | gimple_cond_get_ops_from_tree (tree cond, enum tree_code *code_p, | |
518 | tree *lhs_p, tree *rhs_p) | |
519 | { | |
520 | gcc_assert (TREE_CODE_CLASS (TREE_CODE (cond)) == tcc_comparison | |
521 | || TREE_CODE (cond) == TRUTH_NOT_EXPR | |
522 | || is_gimple_min_invariant (cond) | |
523 | || SSA_VAR_P (cond)); | |
524 | ||
525 | extract_ops_from_tree (cond, code_p, lhs_p, rhs_p); | |
526 | ||
527 | /* Canonicalize conditionals of the form 'if (!VAL)'. */ | |
528 | if (*code_p == TRUTH_NOT_EXPR) | |
529 | { | |
530 | *code_p = EQ_EXPR; | |
531 | gcc_assert (*lhs_p && *rhs_p == NULL_TREE); | |
e8160c9a | 532 | *rhs_p = build_zero_cst (TREE_TYPE (*lhs_p)); |
726a989a RB |
533 | } |
534 | /* Canonicalize conditionals of the form 'if (VAL)' */ | |
535 | else if (TREE_CODE_CLASS (*code_p) != tcc_comparison) | |
536 | { | |
537 | *code_p = NE_EXPR; | |
538 | gcc_assert (*lhs_p && *rhs_p == NULL_TREE); | |
e8160c9a | 539 | *rhs_p = build_zero_cst (TREE_TYPE (*lhs_p)); |
726a989a RB |
540 | } |
541 | } | |
542 | ||
543 | ||
544 | /* Build a GIMPLE_COND statement from the conditional expression tree | |
545 | COND. T_LABEL and F_LABEL are as in gimple_build_cond. */ | |
546 | ||
547 | gimple | |
548 | gimple_build_cond_from_tree (tree cond, tree t_label, tree f_label) | |
549 | { | |
550 | enum tree_code code; | |
551 | tree lhs, rhs; | |
552 | ||
553 | gimple_cond_get_ops_from_tree (cond, &code, &lhs, &rhs); | |
554 | return gimple_build_cond (code, lhs, rhs, t_label, f_label); | |
555 | } | |
556 | ||
557 | /* Set code, lhs, and rhs of a GIMPLE_COND from a suitable | |
558 | boolean expression tree COND. */ | |
559 | ||
560 | void | |
561 | gimple_cond_set_condition_from_tree (gimple stmt, tree cond) | |
562 | { | |
563 | enum tree_code code; | |
564 | tree lhs, rhs; | |
565 | ||
566 | gimple_cond_get_ops_from_tree (cond, &code, &lhs, &rhs); | |
567 | gimple_cond_set_condition (stmt, code, lhs, rhs); | |
568 | } | |
569 | ||
570 | /* Build a GIMPLE_LABEL statement for LABEL. */ | |
571 | ||
572 | gimple | |
573 | gimple_build_label (tree label) | |
574 | { | |
bbbbb16a | 575 | gimple p = gimple_build_with_ops (GIMPLE_LABEL, ERROR_MARK, 1); |
726a989a RB |
576 | gimple_label_set_label (p, label); |
577 | return p; | |
578 | } | |
579 | ||
580 | /* Build a GIMPLE_GOTO statement to label DEST. */ | |
581 | ||
582 | gimple | |
583 | gimple_build_goto (tree dest) | |
584 | { | |
bbbbb16a | 585 | gimple p = gimple_build_with_ops (GIMPLE_GOTO, ERROR_MARK, 1); |
726a989a RB |
586 | gimple_goto_set_dest (p, dest); |
587 | return p; | |
588 | } | |
589 | ||
590 | ||
591 | /* Build a GIMPLE_NOP statement. */ | |
592 | ||
b8698a0f | 593 | gimple |
726a989a RB |
594 | gimple_build_nop (void) |
595 | { | |
596 | return gimple_alloc (GIMPLE_NOP, 0); | |
597 | } | |
598 | ||
599 | ||
600 | /* Build a GIMPLE_BIND statement. | |
601 | VARS are the variables in BODY. | |
602 | BLOCK is the containing block. */ | |
603 | ||
604 | gimple | |
605 | gimple_build_bind (tree vars, gimple_seq body, tree block) | |
606 | { | |
607 | gimple p = gimple_alloc (GIMPLE_BIND, 0); | |
608 | gimple_bind_set_vars (p, vars); | |
609 | if (body) | |
610 | gimple_bind_set_body (p, body); | |
611 | if (block) | |
612 | gimple_bind_set_block (p, block); | |
613 | return p; | |
614 | } | |
615 | ||
616 | /* Helper function to set the simple fields of a asm stmt. | |
617 | ||
618 | STRING is a pointer to a string that is the asm blocks assembly code. | |
619 | NINPUT is the number of register inputs. | |
620 | NOUTPUT is the number of register outputs. | |
621 | NCLOBBERS is the number of clobbered registers. | |
622 | */ | |
623 | ||
624 | static inline gimple | |
b8698a0f | 625 | gimple_build_asm_1 (const char *string, unsigned ninputs, unsigned noutputs, |
1c384bf1 | 626 | unsigned nclobbers, unsigned nlabels) |
726a989a RB |
627 | { |
628 | gimple p; | |
629 | int size = strlen (string); | |
630 | ||
1c384bf1 RH |
631 | /* ASMs with labels cannot have outputs. This should have been |
632 | enforced by the front end. */ | |
633 | gcc_assert (nlabels == 0 || noutputs == 0); | |
634 | ||
bbbbb16a | 635 | p = gimple_build_with_ops (GIMPLE_ASM, ERROR_MARK, |
1c384bf1 | 636 | ninputs + noutputs + nclobbers + nlabels); |
726a989a RB |
637 | |
638 | p->gimple_asm.ni = ninputs; | |
639 | p->gimple_asm.no = noutputs; | |
640 | p->gimple_asm.nc = nclobbers; | |
1c384bf1 | 641 | p->gimple_asm.nl = nlabels; |
726a989a RB |
642 | p->gimple_asm.string = ggc_alloc_string (string, size); |
643 | ||
7aa6d18a SB |
644 | if (GATHER_STATISTICS) |
645 | gimple_alloc_sizes[(int) gimple_alloc_kind (GIMPLE_ASM)] += size; | |
b8698a0f | 646 | |
726a989a RB |
647 | return p; |
648 | } | |
649 | ||
650 | /* Build a GIMPLE_ASM statement. | |
651 | ||
652 | STRING is the assembly code. | |
653 | NINPUT is the number of register inputs. | |
654 | NOUTPUT is the number of register outputs. | |
655 | NCLOBBERS is the number of clobbered registers. | |
656 | INPUTS is a vector of the input register parameters. | |
657 | OUTPUTS is a vector of the output register parameters. | |
1c384bf1 RH |
658 | CLOBBERS is a vector of the clobbered register parameters. |
659 | LABELS is a vector of destination labels. */ | |
726a989a RB |
660 | |
661 | gimple | |
b8698a0f | 662 | gimple_build_asm_vec (const char *string, VEC(tree,gc)* inputs, |
1c384bf1 RH |
663 | VEC(tree,gc)* outputs, VEC(tree,gc)* clobbers, |
664 | VEC(tree,gc)* labels) | |
726a989a RB |
665 | { |
666 | gimple p; | |
667 | unsigned i; | |
668 | ||
669 | p = gimple_build_asm_1 (string, | |
670 | VEC_length (tree, inputs), | |
b8698a0f | 671 | VEC_length (tree, outputs), |
1c384bf1 RH |
672 | VEC_length (tree, clobbers), |
673 | VEC_length (tree, labels)); | |
b8698a0f | 674 | |
726a989a RB |
675 | for (i = 0; i < VEC_length (tree, inputs); i++) |
676 | gimple_asm_set_input_op (p, i, VEC_index (tree, inputs, i)); | |
677 | ||
678 | for (i = 0; i < VEC_length (tree, outputs); i++) | |
679 | gimple_asm_set_output_op (p, i, VEC_index (tree, outputs, i)); | |
680 | ||
681 | for (i = 0; i < VEC_length (tree, clobbers); i++) | |
682 | gimple_asm_set_clobber_op (p, i, VEC_index (tree, clobbers, i)); | |
b8698a0f | 683 | |
1c384bf1 RH |
684 | for (i = 0; i < VEC_length (tree, labels); i++) |
685 | gimple_asm_set_label_op (p, i, VEC_index (tree, labels, i)); | |
b8698a0f | 686 | |
726a989a RB |
687 | return p; |
688 | } | |
689 | ||
690 | /* Build a GIMPLE_CATCH statement. | |
691 | ||
692 | TYPES are the catch types. | |
693 | HANDLER is the exception handler. */ | |
694 | ||
695 | gimple | |
696 | gimple_build_catch (tree types, gimple_seq handler) | |
697 | { | |
698 | gimple p = gimple_alloc (GIMPLE_CATCH, 0); | |
699 | gimple_catch_set_types (p, types); | |
700 | if (handler) | |
701 | gimple_catch_set_handler (p, handler); | |
702 | ||
703 | return p; | |
704 | } | |
705 | ||
706 | /* Build a GIMPLE_EH_FILTER statement. | |
707 | ||
708 | TYPES are the filter's types. | |
709 | FAILURE is the filter's failure action. */ | |
710 | ||
711 | gimple | |
712 | gimple_build_eh_filter (tree types, gimple_seq failure) | |
713 | { | |
714 | gimple p = gimple_alloc (GIMPLE_EH_FILTER, 0); | |
715 | gimple_eh_filter_set_types (p, types); | |
716 | if (failure) | |
717 | gimple_eh_filter_set_failure (p, failure); | |
718 | ||
719 | return p; | |
720 | } | |
721 | ||
1d65f45c RH |
722 | /* Build a GIMPLE_EH_MUST_NOT_THROW statement. */ |
723 | ||
724 | gimple | |
725 | gimple_build_eh_must_not_throw (tree decl) | |
726 | { | |
786f715d | 727 | gimple p = gimple_alloc (GIMPLE_EH_MUST_NOT_THROW, 0); |
1d65f45c RH |
728 | |
729 | gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); | |
730 | gcc_assert (flags_from_decl_or_type (decl) & ECF_NORETURN); | |
d7f09764 | 731 | gimple_eh_must_not_throw_set_fndecl (p, decl); |
1d65f45c RH |
732 | |
733 | return p; | |
734 | } | |
735 | ||
0a35513e AH |
736 | /* Build a GIMPLE_EH_ELSE statement. */ |
737 | ||
738 | gimple | |
739 | gimple_build_eh_else (gimple_seq n_body, gimple_seq e_body) | |
740 | { | |
741 | gimple p = gimple_alloc (GIMPLE_EH_ELSE, 0); | |
742 | gimple_eh_else_set_n_body (p, n_body); | |
743 | gimple_eh_else_set_e_body (p, e_body); | |
744 | return p; | |
745 | } | |
746 | ||
726a989a RB |
747 | /* Build a GIMPLE_TRY statement. |
748 | ||
749 | EVAL is the expression to evaluate. | |
750 | CLEANUP is the cleanup expression. | |
751 | KIND is either GIMPLE_TRY_CATCH or GIMPLE_TRY_FINALLY depending on | |
752 | whether this is a try/catch or a try/finally respectively. */ | |
753 | ||
754 | gimple | |
755 | gimple_build_try (gimple_seq eval, gimple_seq cleanup, | |
756 | enum gimple_try_flags kind) | |
757 | { | |
758 | gimple p; | |
759 | ||
760 | gcc_assert (kind == GIMPLE_TRY_CATCH || kind == GIMPLE_TRY_FINALLY); | |
761 | p = gimple_alloc (GIMPLE_TRY, 0); | |
762 | gimple_set_subcode (p, kind); | |
763 | if (eval) | |
764 | gimple_try_set_eval (p, eval); | |
765 | if (cleanup) | |
766 | gimple_try_set_cleanup (p, cleanup); | |
767 | ||
768 | return p; | |
769 | } | |
770 | ||
771 | /* Construct a GIMPLE_WITH_CLEANUP_EXPR statement. | |
772 | ||
773 | CLEANUP is the cleanup expression. */ | |
774 | ||
775 | gimple | |
776 | gimple_build_wce (gimple_seq cleanup) | |
777 | { | |
778 | gimple p = gimple_alloc (GIMPLE_WITH_CLEANUP_EXPR, 0); | |
779 | if (cleanup) | |
780 | gimple_wce_set_cleanup (p, cleanup); | |
781 | ||
782 | return p; | |
783 | } | |
784 | ||
785 | ||
1d65f45c | 786 | /* Build a GIMPLE_RESX statement. */ |
726a989a RB |
787 | |
788 | gimple | |
789 | gimple_build_resx (int region) | |
790 | { | |
1d65f45c RH |
791 | gimple p = gimple_build_with_ops (GIMPLE_RESX, ERROR_MARK, 0); |
792 | p->gimple_eh_ctrl.region = region; | |
726a989a RB |
793 | return p; |
794 | } | |
795 | ||
796 | ||
797 | /* The helper for constructing a gimple switch statement. | |
798 | INDEX is the switch's index. | |
799 | NLABELS is the number of labels in the switch excluding the default. | |
800 | DEFAULT_LABEL is the default label for the switch statement. */ | |
801 | ||
b8698a0f | 802 | gimple |
1d65f45c | 803 | gimple_build_switch_nlabels (unsigned nlabels, tree index, tree default_label) |
726a989a RB |
804 | { |
805 | /* nlabels + 1 default label + 1 index. */ | |
bbbbb16a | 806 | gimple p = gimple_build_with_ops (GIMPLE_SWITCH, ERROR_MARK, |
1d65f45c | 807 | 1 + (default_label != NULL) + nlabels); |
726a989a | 808 | gimple_switch_set_index (p, index); |
1d65f45c RH |
809 | if (default_label) |
810 | gimple_switch_set_default_label (p, default_label); | |
726a989a RB |
811 | return p; |
812 | } | |
813 | ||
814 | ||
815 | /* Build a GIMPLE_SWITCH statement. | |
816 | ||
817 | INDEX is the switch's index. | |
b8698a0f | 818 | NLABELS is the number of labels in the switch excluding the DEFAULT_LABEL. |
726a989a RB |
819 | ... are the labels excluding the default. */ |
820 | ||
b8698a0f | 821 | gimple |
726a989a RB |
822 | gimple_build_switch (unsigned nlabels, tree index, tree default_label, ...) |
823 | { | |
824 | va_list al; | |
1d65f45c RH |
825 | unsigned i, offset; |
826 | gimple p = gimple_build_switch_nlabels (nlabels, index, default_label); | |
726a989a RB |
827 | |
828 | /* Store the rest of the labels. */ | |
829 | va_start (al, default_label); | |
1d65f45c RH |
830 | offset = (default_label != NULL); |
831 | for (i = 0; i < nlabels; i++) | |
832 | gimple_switch_set_label (p, i + offset, va_arg (al, tree)); | |
726a989a RB |
833 | va_end (al); |
834 | ||
835 | return p; | |
836 | } | |
837 | ||
838 | ||
839 | /* Build a GIMPLE_SWITCH statement. | |
840 | ||
841 | INDEX is the switch's index. | |
842 | DEFAULT_LABEL is the default label | |
843 | ARGS is a vector of labels excluding the default. */ | |
844 | ||
845 | gimple | |
846 | gimple_build_switch_vec (tree index, tree default_label, VEC(tree, heap) *args) | |
847 | { | |
1d65f45c RH |
848 | unsigned i, offset, nlabels = VEC_length (tree, args); |
849 | gimple p = gimple_build_switch_nlabels (nlabels, index, default_label); | |
726a989a | 850 | |
1d65f45c RH |
851 | /* Copy the labels from the vector to the switch statement. */ |
852 | offset = (default_label != NULL); | |
853 | for (i = 0; i < nlabels; i++) | |
854 | gimple_switch_set_label (p, i + offset, VEC_index (tree, args, i)); | |
726a989a RB |
855 | |
856 | return p; | |
857 | } | |
858 | ||
1d65f45c RH |
859 | /* Build a GIMPLE_EH_DISPATCH statement. */ |
860 | ||
861 | gimple | |
862 | gimple_build_eh_dispatch (int region) | |
863 | { | |
864 | gimple p = gimple_build_with_ops (GIMPLE_EH_DISPATCH, ERROR_MARK, 0); | |
865 | p->gimple_eh_ctrl.region = region; | |
866 | return p; | |
867 | } | |
726a989a | 868 | |
b5b8b0ac AO |
869 | /* Build a new GIMPLE_DEBUG_BIND statement. |
870 | ||
871 | VAR is bound to VALUE; block and location are taken from STMT. */ | |
872 | ||
873 | gimple | |
874 | gimple_build_debug_bind_stat (tree var, tree value, gimple stmt MEM_STAT_DECL) | |
875 | { | |
876 | gimple p = gimple_build_with_ops_stat (GIMPLE_DEBUG, | |
877 | (unsigned)GIMPLE_DEBUG_BIND, 2 | |
878 | PASS_MEM_STAT); | |
879 | ||
880 | gimple_debug_bind_set_var (p, var); | |
881 | gimple_debug_bind_set_value (p, value); | |
882 | if (stmt) | |
883 | { | |
884 | gimple_set_block (p, gimple_block (stmt)); | |
885 | gimple_set_location (p, gimple_location (stmt)); | |
886 | } | |
887 | ||
888 | return p; | |
889 | } | |
890 | ||
891 | ||
ddb555ed JJ |
892 | /* Build a new GIMPLE_DEBUG_SOURCE_BIND statement. |
893 | ||
894 | VAR is bound to VALUE; block and location are taken from STMT. */ | |
895 | ||
896 | gimple | |
897 | gimple_build_debug_source_bind_stat (tree var, tree value, | |
898 | gimple stmt MEM_STAT_DECL) | |
899 | { | |
900 | gimple p = gimple_build_with_ops_stat (GIMPLE_DEBUG, | |
901 | (unsigned)GIMPLE_DEBUG_SOURCE_BIND, 2 | |
902 | PASS_MEM_STAT); | |
903 | ||
904 | gimple_debug_source_bind_set_var (p, var); | |
905 | gimple_debug_source_bind_set_value (p, value); | |
906 | if (stmt) | |
907 | { | |
908 | gimple_set_block (p, gimple_block (stmt)); | |
909 | gimple_set_location (p, gimple_location (stmt)); | |
910 | } | |
911 | ||
912 | return p; | |
913 | } | |
914 | ||
915 | ||
726a989a RB |
916 | /* Build a GIMPLE_OMP_CRITICAL statement. |
917 | ||
918 | BODY is the sequence of statements for which only one thread can execute. | |
919 | NAME is optional identifier for this critical block. */ | |
920 | ||
b8698a0f | 921 | gimple |
726a989a RB |
922 | gimple_build_omp_critical (gimple_seq body, tree name) |
923 | { | |
924 | gimple p = gimple_alloc (GIMPLE_OMP_CRITICAL, 0); | |
925 | gimple_omp_critical_set_name (p, name); | |
926 | if (body) | |
927 | gimple_omp_set_body (p, body); | |
928 | ||
929 | return p; | |
930 | } | |
931 | ||
932 | /* Build a GIMPLE_OMP_FOR statement. | |
933 | ||
934 | BODY is sequence of statements inside the for loop. | |
b8698a0f | 935 | CLAUSES, are any of the OMP loop construct's clauses: private, firstprivate, |
726a989a RB |
936 | lastprivate, reductions, ordered, schedule, and nowait. |
937 | COLLAPSE is the collapse count. | |
938 | PRE_BODY is the sequence of statements that are loop invariant. */ | |
939 | ||
940 | gimple | |
941 | gimple_build_omp_for (gimple_seq body, tree clauses, size_t collapse, | |
942 | gimple_seq pre_body) | |
943 | { | |
944 | gimple p = gimple_alloc (GIMPLE_OMP_FOR, 0); | |
945 | if (body) | |
946 | gimple_omp_set_body (p, body); | |
947 | gimple_omp_for_set_clauses (p, clauses); | |
948 | p->gimple_omp_for.collapse = collapse; | |
a9429e29 LB |
949 | p->gimple_omp_for.iter |
950 | = ggc_alloc_cleared_vec_gimple_omp_for_iter (collapse); | |
726a989a RB |
951 | if (pre_body) |
952 | gimple_omp_for_set_pre_body (p, pre_body); | |
953 | ||
954 | return p; | |
955 | } | |
956 | ||
957 | ||
958 | /* Build a GIMPLE_OMP_PARALLEL statement. | |
959 | ||
960 | BODY is sequence of statements which are executed in parallel. | |
961 | CLAUSES, are the OMP parallel construct's clauses. | |
962 | CHILD_FN is the function created for the parallel threads to execute. | |
963 | DATA_ARG are the shared data argument(s). */ | |
964 | ||
b8698a0f L |
965 | gimple |
966 | gimple_build_omp_parallel (gimple_seq body, tree clauses, tree child_fn, | |
726a989a RB |
967 | tree data_arg) |
968 | { | |
969 | gimple p = gimple_alloc (GIMPLE_OMP_PARALLEL, 0); | |
970 | if (body) | |
971 | gimple_omp_set_body (p, body); | |
972 | gimple_omp_parallel_set_clauses (p, clauses); | |
973 | gimple_omp_parallel_set_child_fn (p, child_fn); | |
974 | gimple_omp_parallel_set_data_arg (p, data_arg); | |
975 | ||
976 | return p; | |
977 | } | |
978 | ||
979 | ||
980 | /* Build a GIMPLE_OMP_TASK statement. | |
981 | ||
982 | BODY is sequence of statements which are executed by the explicit task. | |
983 | CLAUSES, are the OMP parallel construct's clauses. | |
984 | CHILD_FN is the function created for the parallel threads to execute. | |
985 | DATA_ARG are the shared data argument(s). | |
986 | COPY_FN is the optional function for firstprivate initialization. | |
987 | ARG_SIZE and ARG_ALIGN are size and alignment of the data block. */ | |
988 | ||
b8698a0f | 989 | gimple |
726a989a RB |
990 | gimple_build_omp_task (gimple_seq body, tree clauses, tree child_fn, |
991 | tree data_arg, tree copy_fn, tree arg_size, | |
992 | tree arg_align) | |
993 | { | |
994 | gimple p = gimple_alloc (GIMPLE_OMP_TASK, 0); | |
995 | if (body) | |
996 | gimple_omp_set_body (p, body); | |
997 | gimple_omp_task_set_clauses (p, clauses); | |
998 | gimple_omp_task_set_child_fn (p, child_fn); | |
999 | gimple_omp_task_set_data_arg (p, data_arg); | |
1000 | gimple_omp_task_set_copy_fn (p, copy_fn); | |
1001 | gimple_omp_task_set_arg_size (p, arg_size); | |
1002 | gimple_omp_task_set_arg_align (p, arg_align); | |
1003 | ||
1004 | return p; | |
1005 | } | |
1006 | ||
1007 | ||
1008 | /* Build a GIMPLE_OMP_SECTION statement for a sections statement. | |
1009 | ||
1010 | BODY is the sequence of statements in the section. */ | |
1011 | ||
1012 | gimple | |
1013 | gimple_build_omp_section (gimple_seq body) | |
1014 | { | |
1015 | gimple p = gimple_alloc (GIMPLE_OMP_SECTION, 0); | |
1016 | if (body) | |
1017 | gimple_omp_set_body (p, body); | |
1018 | ||
1019 | return p; | |
1020 | } | |
1021 | ||
1022 | ||
1023 | /* Build a GIMPLE_OMP_MASTER statement. | |
1024 | ||
1025 | BODY is the sequence of statements to be executed by just the master. */ | |
1026 | ||
b8698a0f | 1027 | gimple |
726a989a RB |
1028 | gimple_build_omp_master (gimple_seq body) |
1029 | { | |
1030 | gimple p = gimple_alloc (GIMPLE_OMP_MASTER, 0); | |
1031 | if (body) | |
1032 | gimple_omp_set_body (p, body); | |
1033 | ||
1034 | return p; | |
1035 | } | |
1036 | ||
1037 | ||
1038 | /* Build a GIMPLE_OMP_CONTINUE statement. | |
1039 | ||
1040 | CONTROL_DEF is the definition of the control variable. | |
1041 | CONTROL_USE is the use of the control variable. */ | |
1042 | ||
b8698a0f | 1043 | gimple |
726a989a RB |
1044 | gimple_build_omp_continue (tree control_def, tree control_use) |
1045 | { | |
1046 | gimple p = gimple_alloc (GIMPLE_OMP_CONTINUE, 0); | |
1047 | gimple_omp_continue_set_control_def (p, control_def); | |
1048 | gimple_omp_continue_set_control_use (p, control_use); | |
1049 | return p; | |
1050 | } | |
1051 | ||
1052 | /* Build a GIMPLE_OMP_ORDERED statement. | |
1053 | ||
1054 | BODY is the sequence of statements inside a loop that will executed in | |
1055 | sequence. */ | |
1056 | ||
b8698a0f | 1057 | gimple |
726a989a RB |
1058 | gimple_build_omp_ordered (gimple_seq body) |
1059 | { | |
1060 | gimple p = gimple_alloc (GIMPLE_OMP_ORDERED, 0); | |
1061 | if (body) | |
1062 | gimple_omp_set_body (p, body); | |
1063 | ||
1064 | return p; | |
1065 | } | |
1066 | ||
1067 | ||
1068 | /* Build a GIMPLE_OMP_RETURN statement. | |
1069 | WAIT_P is true if this is a non-waiting return. */ | |
1070 | ||
b8698a0f | 1071 | gimple |
726a989a RB |
1072 | gimple_build_omp_return (bool wait_p) |
1073 | { | |
1074 | gimple p = gimple_alloc (GIMPLE_OMP_RETURN, 0); | |
1075 | if (wait_p) | |
1076 | gimple_omp_return_set_nowait (p); | |
1077 | ||
1078 | return p; | |
1079 | } | |
1080 | ||
1081 | ||
1082 | /* Build a GIMPLE_OMP_SECTIONS statement. | |
1083 | ||
1084 | BODY is a sequence of section statements. | |
1085 | CLAUSES are any of the OMP sections contsruct's clauses: private, | |
1086 | firstprivate, lastprivate, reduction, and nowait. */ | |
1087 | ||
b8698a0f | 1088 | gimple |
726a989a RB |
1089 | gimple_build_omp_sections (gimple_seq body, tree clauses) |
1090 | { | |
1091 | gimple p = gimple_alloc (GIMPLE_OMP_SECTIONS, 0); | |
1092 | if (body) | |
1093 | gimple_omp_set_body (p, body); | |
1094 | gimple_omp_sections_set_clauses (p, clauses); | |
1095 | ||
1096 | return p; | |
1097 | } | |
1098 | ||
1099 | ||
1100 | /* Build a GIMPLE_OMP_SECTIONS_SWITCH. */ | |
1101 | ||
1102 | gimple | |
1103 | gimple_build_omp_sections_switch (void) | |
1104 | { | |
1105 | return gimple_alloc (GIMPLE_OMP_SECTIONS_SWITCH, 0); | |
1106 | } | |
1107 | ||
1108 | ||
1109 | /* Build a GIMPLE_OMP_SINGLE statement. | |
1110 | ||
1111 | BODY is the sequence of statements that will be executed once. | |
1112 | CLAUSES are any of the OMP single construct's clauses: private, firstprivate, | |
1113 | copyprivate, nowait. */ | |
1114 | ||
b8698a0f | 1115 | gimple |
726a989a RB |
1116 | gimple_build_omp_single (gimple_seq body, tree clauses) |
1117 | { | |
1118 | gimple p = gimple_alloc (GIMPLE_OMP_SINGLE, 0); | |
1119 | if (body) | |
1120 | gimple_omp_set_body (p, body); | |
1121 | gimple_omp_single_set_clauses (p, clauses); | |
1122 | ||
1123 | return p; | |
1124 | } | |
1125 | ||
1126 | ||
726a989a RB |
1127 | /* Build a GIMPLE_OMP_ATOMIC_LOAD statement. */ |
1128 | ||
1129 | gimple | |
1130 | gimple_build_omp_atomic_load (tree lhs, tree rhs) | |
1131 | { | |
1132 | gimple p = gimple_alloc (GIMPLE_OMP_ATOMIC_LOAD, 0); | |
1133 | gimple_omp_atomic_load_set_lhs (p, lhs); | |
1134 | gimple_omp_atomic_load_set_rhs (p, rhs); | |
1135 | return p; | |
1136 | } | |
1137 | ||
1138 | /* Build a GIMPLE_OMP_ATOMIC_STORE statement. | |
1139 | ||
1140 | VAL is the value we are storing. */ | |
1141 | ||
1142 | gimple | |
1143 | gimple_build_omp_atomic_store (tree val) | |
1144 | { | |
1145 | gimple p = gimple_alloc (GIMPLE_OMP_ATOMIC_STORE, 0); | |
1146 | gimple_omp_atomic_store_set_val (p, val); | |
1147 | return p; | |
1148 | } | |
1149 | ||
0a35513e AH |
1150 | /* Build a GIMPLE_TRANSACTION statement. */ |
1151 | ||
1152 | gimple | |
1153 | gimple_build_transaction (gimple_seq body, tree label) | |
1154 | { | |
1155 | gimple p = gimple_alloc (GIMPLE_TRANSACTION, 0); | |
1156 | gimple_transaction_set_body (p, body); | |
1157 | gimple_transaction_set_label (p, label); | |
1158 | return p; | |
1159 | } | |
1160 | ||
726a989a RB |
1161 | /* Build a GIMPLE_PREDICT statement. PREDICT is one of the predictors from |
1162 | predict.def, OUTCOME is NOT_TAKEN or TAKEN. */ | |
1163 | ||
1164 | gimple | |
1165 | gimple_build_predict (enum br_predictor predictor, enum prediction outcome) | |
1166 | { | |
1167 | gimple p = gimple_alloc (GIMPLE_PREDICT, 0); | |
1168 | /* Ensure all the predictors fit into the lower bits of the subcode. */ | |
e0c68ce9 | 1169 | gcc_assert ((int) END_PREDICTORS <= GF_PREDICT_TAKEN); |
726a989a RB |
1170 | gimple_predict_set_predictor (p, predictor); |
1171 | gimple_predict_set_outcome (p, outcome); | |
1172 | return p; | |
1173 | } | |
1174 | ||
cea094ed | 1175 | #if defined ENABLE_GIMPLE_CHECKING |
726a989a RB |
1176 | /* Complain of a gimple type mismatch and die. */ |
1177 | ||
1178 | void | |
1179 | gimple_check_failed (const_gimple gs, const char *file, int line, | |
1180 | const char *function, enum gimple_code code, | |
1181 | enum tree_code subcode) | |
1182 | { | |
1183 | internal_error ("gimple check: expected %s(%s), have %s(%s) in %s, at %s:%d", | |
1184 | gimple_code_name[code], | |
1185 | tree_code_name[subcode], | |
1186 | gimple_code_name[gimple_code (gs)], | |
1187 | gs->gsbase.subcode > 0 | |
1188 | ? tree_code_name[gs->gsbase.subcode] | |
1189 | : "", | |
1190 | function, trim_filename (file), line); | |
1191 | } | |
726a989a RB |
1192 | #endif /* ENABLE_GIMPLE_CHECKING */ |
1193 | ||
1194 | ||
726a989a RB |
1195 | /* Link gimple statement GS to the end of the sequence *SEQ_P. If |
1196 | *SEQ_P is NULL, a new sequence is allocated. */ | |
1197 | ||
1198 | void | |
1199 | gimple_seq_add_stmt (gimple_seq *seq_p, gimple gs) | |
1200 | { | |
1201 | gimple_stmt_iterator si; | |
726a989a RB |
1202 | if (gs == NULL) |
1203 | return; | |
1204 | ||
726a989a RB |
1205 | si = gsi_last (*seq_p); |
1206 | gsi_insert_after (&si, gs, GSI_NEW_STMT); | |
1207 | } | |
1208 | ||
1209 | ||
1210 | /* Append sequence SRC to the end of sequence *DST_P. If *DST_P is | |
1211 | NULL, a new sequence is allocated. */ | |
1212 | ||
1213 | void | |
1214 | gimple_seq_add_seq (gimple_seq *dst_p, gimple_seq src) | |
1215 | { | |
1216 | gimple_stmt_iterator si; | |
726a989a RB |
1217 | if (src == NULL) |
1218 | return; | |
1219 | ||
726a989a RB |
1220 | si = gsi_last (*dst_p); |
1221 | gsi_insert_seq_after (&si, src, GSI_NEW_STMT); | |
1222 | } | |
1223 | ||
1224 | ||
1225 | /* Helper function of empty_body_p. Return true if STMT is an empty | |
1226 | statement. */ | |
1227 | ||
1228 | static bool | |
1229 | empty_stmt_p (gimple stmt) | |
1230 | { | |
1231 | if (gimple_code (stmt) == GIMPLE_NOP) | |
1232 | return true; | |
1233 | if (gimple_code (stmt) == GIMPLE_BIND) | |
1234 | return empty_body_p (gimple_bind_body (stmt)); | |
1235 | return false; | |
1236 | } | |
1237 | ||
1238 | ||
1239 | /* Return true if BODY contains nothing but empty statements. */ | |
1240 | ||
1241 | bool | |
1242 | empty_body_p (gimple_seq body) | |
1243 | { | |
1244 | gimple_stmt_iterator i; | |
1245 | ||
726a989a RB |
1246 | if (gimple_seq_empty_p (body)) |
1247 | return true; | |
1248 | for (i = gsi_start (body); !gsi_end_p (i); gsi_next (&i)) | |
b5b8b0ac AO |
1249 | if (!empty_stmt_p (gsi_stmt (i)) |
1250 | && !is_gimple_debug (gsi_stmt (i))) | |
726a989a RB |
1251 | return false; |
1252 | ||
1253 | return true; | |
1254 | } | |
1255 | ||
1256 | ||
1257 | /* Perform a deep copy of sequence SRC and return the result. */ | |
1258 | ||
1259 | gimple_seq | |
1260 | gimple_seq_copy (gimple_seq src) | |
1261 | { | |
1262 | gimple_stmt_iterator gsi; | |
355a7673 | 1263 | gimple_seq new_seq = NULL; |
726a989a RB |
1264 | gimple stmt; |
1265 | ||
1266 | for (gsi = gsi_start (src); !gsi_end_p (gsi); gsi_next (&gsi)) | |
1267 | { | |
1268 | stmt = gimple_copy (gsi_stmt (gsi)); | |
82d6e6fc | 1269 | gimple_seq_add_stmt (&new_seq, stmt); |
726a989a RB |
1270 | } |
1271 | ||
82d6e6fc | 1272 | return new_seq; |
726a989a RB |
1273 | } |
1274 | ||
1275 | ||
355a7673 | 1276 | /* Walk all the statements in the sequence *PSEQ calling walk_gimple_stmt |
726a989a | 1277 | on each one. WI is as in walk_gimple_stmt. |
b8698a0f | 1278 | |
0a35513e AH |
1279 | If walk_gimple_stmt returns non-NULL, the walk is stopped, and the |
1280 | value is stored in WI->CALLBACK_RESULT. Also, the statement that | |
1281 | produced the value is returned if this statement has not been | |
1282 | removed by a callback (wi->removed_stmt). If the statement has | |
1283 | been removed, NULL is returned. | |
726a989a RB |
1284 | |
1285 | Otherwise, all the statements are walked and NULL returned. */ | |
1286 | ||
1287 | gimple | |
355a7673 MM |
1288 | walk_gimple_seq_mod (gimple_seq *pseq, walk_stmt_fn callback_stmt, |
1289 | walk_tree_fn callback_op, struct walk_stmt_info *wi) | |
726a989a RB |
1290 | { |
1291 | gimple_stmt_iterator gsi; | |
1292 | ||
355a7673 | 1293 | for (gsi = gsi_start (*pseq); !gsi_end_p (gsi); ) |
726a989a RB |
1294 | { |
1295 | tree ret = walk_gimple_stmt (&gsi, callback_stmt, callback_op, wi); | |
1296 | if (ret) | |
1297 | { | |
1298 | /* If CALLBACK_STMT or CALLBACK_OP return a value, WI must exist | |
1299 | to hold it. */ | |
1300 | gcc_assert (wi); | |
1301 | wi->callback_result = ret; | |
0a35513e AH |
1302 | |
1303 | return wi->removed_stmt ? NULL : gsi_stmt (gsi); | |
726a989a | 1304 | } |
0a35513e AH |
1305 | |
1306 | if (!wi->removed_stmt) | |
1307 | gsi_next (&gsi); | |
726a989a RB |
1308 | } |
1309 | ||
1310 | if (wi) | |
1311 | wi->callback_result = NULL_TREE; | |
1312 | ||
1313 | return NULL; | |
1314 | } | |
1315 | ||
1316 | ||
355a7673 MM |
1317 | /* Like walk_gimple_seq_mod, but ensure that the head of SEQ isn't |
1318 | changed by the callbacks. */ | |
1319 | ||
1320 | gimple | |
1321 | walk_gimple_seq (gimple_seq seq, walk_stmt_fn callback_stmt, | |
1322 | walk_tree_fn callback_op, struct walk_stmt_info *wi) | |
1323 | { | |
1324 | gimple_seq seq2 = seq; | |
1325 | gimple ret = walk_gimple_seq_mod (&seq2, callback_stmt, callback_op, wi); | |
1326 | gcc_assert (seq2 == seq); | |
1327 | return ret; | |
1328 | } | |
1329 | ||
1330 | ||
726a989a RB |
1331 | /* Helper function for walk_gimple_stmt. Walk operands of a GIMPLE_ASM. */ |
1332 | ||
1333 | static tree | |
1334 | walk_gimple_asm (gimple stmt, walk_tree_fn callback_op, | |
1335 | struct walk_stmt_info *wi) | |
1336 | { | |
1c384bf1 | 1337 | tree ret, op; |
726a989a RB |
1338 | unsigned noutputs; |
1339 | const char **oconstraints; | |
1c384bf1 | 1340 | unsigned i, n; |
726a989a RB |
1341 | const char *constraint; |
1342 | bool allows_mem, allows_reg, is_inout; | |
1343 | ||
1344 | noutputs = gimple_asm_noutputs (stmt); | |
1345 | oconstraints = (const char **) alloca ((noutputs) * sizeof (const char *)); | |
1346 | ||
1347 | if (wi) | |
1348 | wi->is_lhs = true; | |
1349 | ||
1350 | for (i = 0; i < noutputs; i++) | |
1351 | { | |
1c384bf1 | 1352 | op = gimple_asm_output_op (stmt, i); |
726a989a RB |
1353 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (op))); |
1354 | oconstraints[i] = constraint; | |
1355 | parse_output_constraint (&constraint, i, 0, 0, &allows_mem, &allows_reg, | |
1356 | &is_inout); | |
1357 | if (wi) | |
1358 | wi->val_only = (allows_reg || !allows_mem); | |
1359 | ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL); | |
1360 | if (ret) | |
1361 | return ret; | |
1362 | } | |
1363 | ||
1c384bf1 RH |
1364 | n = gimple_asm_ninputs (stmt); |
1365 | for (i = 0; i < n; i++) | |
726a989a | 1366 | { |
1c384bf1 | 1367 | op = gimple_asm_input_op (stmt, i); |
726a989a RB |
1368 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (op))); |
1369 | parse_input_constraint (&constraint, 0, 0, noutputs, 0, | |
1370 | oconstraints, &allows_mem, &allows_reg); | |
1371 | if (wi) | |
1c384bf1 RH |
1372 | { |
1373 | wi->val_only = (allows_reg || !allows_mem); | |
1374 | /* Although input "m" is not really a LHS, we need a lvalue. */ | |
1375 | wi->is_lhs = !wi->val_only; | |
1376 | } | |
726a989a RB |
1377 | ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL); |
1378 | if (ret) | |
1379 | return ret; | |
1380 | } | |
1381 | ||
1382 | if (wi) | |
1383 | { | |
1384 | wi->is_lhs = false; | |
1385 | wi->val_only = true; | |
1386 | } | |
1387 | ||
1c384bf1 RH |
1388 | n = gimple_asm_nlabels (stmt); |
1389 | for (i = 0; i < n; i++) | |
1390 | { | |
1391 | op = gimple_asm_label_op (stmt, i); | |
1392 | ret = walk_tree (&TREE_VALUE (op), callback_op, wi, NULL); | |
1393 | if (ret) | |
1394 | return ret; | |
1395 | } | |
1396 | ||
726a989a RB |
1397 | return NULL_TREE; |
1398 | } | |
1399 | ||
1400 | ||
1401 | /* Helper function of WALK_GIMPLE_STMT. Walk every tree operand in | |
1402 | STMT. CALLBACK_OP and WI are as in WALK_GIMPLE_STMT. | |
1403 | ||
1404 | CALLBACK_OP is called on each operand of STMT via walk_tree. | |
1405 | Additional parameters to walk_tree must be stored in WI. For each operand | |
1406 | OP, walk_tree is called as: | |
1407 | ||
1408 | walk_tree (&OP, CALLBACK_OP, WI, WI->PSET) | |
1409 | ||
1410 | If CALLBACK_OP returns non-NULL for an operand, the remaining | |
1411 | operands are not scanned. | |
1412 | ||
1413 | The return value is that returned by the last call to walk_tree, or | |
1414 | NULL_TREE if no CALLBACK_OP is specified. */ | |
1415 | ||
6a4d4e8a | 1416 | tree |
726a989a RB |
1417 | walk_gimple_op (gimple stmt, walk_tree_fn callback_op, |
1418 | struct walk_stmt_info *wi) | |
1419 | { | |
1420 | struct pointer_set_t *pset = (wi) ? wi->pset : NULL; | |
1421 | unsigned i; | |
1422 | tree ret = NULL_TREE; | |
1423 | ||
1424 | switch (gimple_code (stmt)) | |
1425 | { | |
1426 | case GIMPLE_ASSIGN: | |
cb3d597d EB |
1427 | /* Walk the RHS operands. If the LHS is of a non-renamable type or |
1428 | is a register variable, we may use a COMPONENT_REF on the RHS. */ | |
726a989a | 1429 | if (wi) |
cb3d597d EB |
1430 | { |
1431 | tree lhs = gimple_assign_lhs (stmt); | |
1432 | wi->val_only | |
1433 | = (is_gimple_reg_type (TREE_TYPE (lhs)) && !is_gimple_reg (lhs)) | |
b9af73fc | 1434 | || gimple_assign_rhs_class (stmt) != GIMPLE_SINGLE_RHS; |
cb3d597d | 1435 | } |
726a989a RB |
1436 | |
1437 | for (i = 1; i < gimple_num_ops (stmt); i++) | |
1438 | { | |
1439 | ret = walk_tree (gimple_op_ptr (stmt, i), callback_op, wi, | |
1440 | pset); | |
1441 | if (ret) | |
1442 | return ret; | |
1443 | } | |
1444 | ||
1445 | /* Walk the LHS. If the RHS is appropriate for a memory, we | |
1446 | may use a COMPONENT_REF on the LHS. */ | |
1447 | if (wi) | |
1448 | { | |
216820a4 RG |
1449 | /* If the RHS is of a non-renamable type or is a register variable, |
1450 | we may use a COMPONENT_REF on the LHS. */ | |
b9af73fc | 1451 | tree rhs1 = gimple_assign_rhs1 (stmt); |
216820a4 RG |
1452 | wi->val_only |
1453 | = (is_gimple_reg_type (TREE_TYPE (rhs1)) && !is_gimple_reg (rhs1)) | |
1454 | || gimple_assign_rhs_class (stmt) != GIMPLE_SINGLE_RHS; | |
726a989a RB |
1455 | wi->is_lhs = true; |
1456 | } | |
1457 | ||
1458 | ret = walk_tree (gimple_op_ptr (stmt, 0), callback_op, wi, pset); | |
1459 | if (ret) | |
1460 | return ret; | |
1461 | ||
1462 | if (wi) | |
1463 | { | |
1464 | wi->val_only = true; | |
1465 | wi->is_lhs = false; | |
1466 | } | |
1467 | break; | |
1468 | ||
1469 | case GIMPLE_CALL: | |
1470 | if (wi) | |
523968bf RG |
1471 | { |
1472 | wi->is_lhs = false; | |
1473 | wi->val_only = true; | |
1474 | } | |
726a989a RB |
1475 | |
1476 | ret = walk_tree (gimple_call_chain_ptr (stmt), callback_op, wi, pset); | |
1477 | if (ret) | |
1478 | return ret; | |
1479 | ||
1480 | ret = walk_tree (gimple_call_fn_ptr (stmt), callback_op, wi, pset); | |
1481 | if (ret) | |
1482 | return ret; | |
1483 | ||
1484 | for (i = 0; i < gimple_call_num_args (stmt); i++) | |
1485 | { | |
523968bf | 1486 | if (wi) |
4d931f41 EB |
1487 | wi->val_only |
1488 | = is_gimple_reg_type (TREE_TYPE (gimple_call_arg (stmt, i))); | |
726a989a RB |
1489 | ret = walk_tree (gimple_call_arg_ptr (stmt, i), callback_op, wi, |
1490 | pset); | |
1491 | if (ret) | |
1492 | return ret; | |
1493 | } | |
1494 | ||
523968bf RG |
1495 | if (gimple_call_lhs (stmt)) |
1496 | { | |
1497 | if (wi) | |
1498 | { | |
1499 | wi->is_lhs = true; | |
4d931f41 EB |
1500 | wi->val_only |
1501 | = is_gimple_reg_type (TREE_TYPE (gimple_call_lhs (stmt))); | |
523968bf | 1502 | } |
726a989a | 1503 | |
523968bf RG |
1504 | ret = walk_tree (gimple_call_lhs_ptr (stmt), callback_op, wi, pset); |
1505 | if (ret) | |
1506 | return ret; | |
1507 | } | |
726a989a RB |
1508 | |
1509 | if (wi) | |
523968bf RG |
1510 | { |
1511 | wi->is_lhs = false; | |
1512 | wi->val_only = true; | |
1513 | } | |
726a989a RB |
1514 | break; |
1515 | ||
1516 | case GIMPLE_CATCH: | |
1517 | ret = walk_tree (gimple_catch_types_ptr (stmt), callback_op, wi, | |
1518 | pset); | |
1519 | if (ret) | |
1520 | return ret; | |
1521 | break; | |
1522 | ||
1523 | case GIMPLE_EH_FILTER: | |
1524 | ret = walk_tree (gimple_eh_filter_types_ptr (stmt), callback_op, wi, | |
1525 | pset); | |
1526 | if (ret) | |
1527 | return ret; | |
1528 | break; | |
1529 | ||
726a989a RB |
1530 | case GIMPLE_ASM: |
1531 | ret = walk_gimple_asm (stmt, callback_op, wi); | |
1532 | if (ret) | |
1533 | return ret; | |
1534 | break; | |
1535 | ||
1536 | case GIMPLE_OMP_CONTINUE: | |
1537 | ret = walk_tree (gimple_omp_continue_control_def_ptr (stmt), | |
1538 | callback_op, wi, pset); | |
1539 | if (ret) | |
1540 | return ret; | |
1541 | ||
1542 | ret = walk_tree (gimple_omp_continue_control_use_ptr (stmt), | |
1543 | callback_op, wi, pset); | |
1544 | if (ret) | |
1545 | return ret; | |
1546 | break; | |
1547 | ||
1548 | case GIMPLE_OMP_CRITICAL: | |
1549 | ret = walk_tree (gimple_omp_critical_name_ptr (stmt), callback_op, wi, | |
1550 | pset); | |
1551 | if (ret) | |
1552 | return ret; | |
1553 | break; | |
1554 | ||
1555 | case GIMPLE_OMP_FOR: | |
1556 | ret = walk_tree (gimple_omp_for_clauses_ptr (stmt), callback_op, wi, | |
1557 | pset); | |
1558 | if (ret) | |
1559 | return ret; | |
1560 | for (i = 0; i < gimple_omp_for_collapse (stmt); i++) | |
1561 | { | |
1562 | ret = walk_tree (gimple_omp_for_index_ptr (stmt, i), callback_op, | |
1563 | wi, pset); | |
1564 | if (ret) | |
1565 | return ret; | |
1566 | ret = walk_tree (gimple_omp_for_initial_ptr (stmt, i), callback_op, | |
1567 | wi, pset); | |
1568 | if (ret) | |
1569 | return ret; | |
1570 | ret = walk_tree (gimple_omp_for_final_ptr (stmt, i), callback_op, | |
1571 | wi, pset); | |
1572 | if (ret) | |
1573 | return ret; | |
1574 | ret = walk_tree (gimple_omp_for_incr_ptr (stmt, i), callback_op, | |
1575 | wi, pset); | |
1576 | } | |
1577 | if (ret) | |
1578 | return ret; | |
1579 | break; | |
1580 | ||
1581 | case GIMPLE_OMP_PARALLEL: | |
1582 | ret = walk_tree (gimple_omp_parallel_clauses_ptr (stmt), callback_op, | |
1583 | wi, pset); | |
1584 | if (ret) | |
1585 | return ret; | |
1586 | ret = walk_tree (gimple_omp_parallel_child_fn_ptr (stmt), callback_op, | |
1587 | wi, pset); | |
1588 | if (ret) | |
1589 | return ret; | |
1590 | ret = walk_tree (gimple_omp_parallel_data_arg_ptr (stmt), callback_op, | |
1591 | wi, pset); | |
1592 | if (ret) | |
1593 | return ret; | |
1594 | break; | |
1595 | ||
1596 | case GIMPLE_OMP_TASK: | |
1597 | ret = walk_tree (gimple_omp_task_clauses_ptr (stmt), callback_op, | |
1598 | wi, pset); | |
1599 | if (ret) | |
1600 | return ret; | |
1601 | ret = walk_tree (gimple_omp_task_child_fn_ptr (stmt), callback_op, | |
1602 | wi, pset); | |
1603 | if (ret) | |
1604 | return ret; | |
1605 | ret = walk_tree (gimple_omp_task_data_arg_ptr (stmt), callback_op, | |
1606 | wi, pset); | |
1607 | if (ret) | |
1608 | return ret; | |
1609 | ret = walk_tree (gimple_omp_task_copy_fn_ptr (stmt), callback_op, | |
1610 | wi, pset); | |
1611 | if (ret) | |
1612 | return ret; | |
1613 | ret = walk_tree (gimple_omp_task_arg_size_ptr (stmt), callback_op, | |
1614 | wi, pset); | |
1615 | if (ret) | |
1616 | return ret; | |
1617 | ret = walk_tree (gimple_omp_task_arg_align_ptr (stmt), callback_op, | |
1618 | wi, pset); | |
1619 | if (ret) | |
1620 | return ret; | |
1621 | break; | |
1622 | ||
1623 | case GIMPLE_OMP_SECTIONS: | |
1624 | ret = walk_tree (gimple_omp_sections_clauses_ptr (stmt), callback_op, | |
1625 | wi, pset); | |
1626 | if (ret) | |
1627 | return ret; | |
1628 | ||
1629 | ret = walk_tree (gimple_omp_sections_control_ptr (stmt), callback_op, | |
1630 | wi, pset); | |
1631 | if (ret) | |
1632 | return ret; | |
1633 | ||
1634 | break; | |
1635 | ||
1636 | case GIMPLE_OMP_SINGLE: | |
1637 | ret = walk_tree (gimple_omp_single_clauses_ptr (stmt), callback_op, wi, | |
1638 | pset); | |
1639 | if (ret) | |
1640 | return ret; | |
1641 | break; | |
1642 | ||
1643 | case GIMPLE_OMP_ATOMIC_LOAD: | |
1644 | ret = walk_tree (gimple_omp_atomic_load_lhs_ptr (stmt), callback_op, wi, | |
1645 | pset); | |
1646 | if (ret) | |
1647 | return ret; | |
1648 | ||
1649 | ret = walk_tree (gimple_omp_atomic_load_rhs_ptr (stmt), callback_op, wi, | |
1650 | pset); | |
1651 | if (ret) | |
1652 | return ret; | |
1653 | break; | |
1654 | ||
1655 | case GIMPLE_OMP_ATOMIC_STORE: | |
1656 | ret = walk_tree (gimple_omp_atomic_store_val_ptr (stmt), callback_op, | |
1657 | wi, pset); | |
1658 | if (ret) | |
1659 | return ret; | |
1660 | break; | |
1661 | ||
0a35513e AH |
1662 | case GIMPLE_TRANSACTION: |
1663 | ret = walk_tree (gimple_transaction_label_ptr (stmt), callback_op, | |
1664 | wi, pset); | |
1665 | if (ret) | |
1666 | return ret; | |
1667 | break; | |
1668 | ||
726a989a RB |
1669 | /* Tuples that do not have operands. */ |
1670 | case GIMPLE_NOP: | |
1671 | case GIMPLE_RESX: | |
1672 | case GIMPLE_OMP_RETURN: | |
1673 | case GIMPLE_PREDICT: | |
1674 | break; | |
1675 | ||
1676 | default: | |
1677 | { | |
1678 | enum gimple_statement_structure_enum gss; | |
1679 | gss = gimple_statement_structure (stmt); | |
1680 | if (gss == GSS_WITH_OPS || gss == GSS_WITH_MEM_OPS) | |
1681 | for (i = 0; i < gimple_num_ops (stmt); i++) | |
1682 | { | |
1683 | ret = walk_tree (gimple_op_ptr (stmt, i), callback_op, wi, pset); | |
1684 | if (ret) | |
1685 | return ret; | |
1686 | } | |
1687 | } | |
1688 | break; | |
1689 | } | |
1690 | ||
1691 | return NULL_TREE; | |
1692 | } | |
1693 | ||
1694 | ||
1695 | /* Walk the current statement in GSI (optionally using traversal state | |
1696 | stored in WI). If WI is NULL, no state is kept during traversal. | |
1697 | The callback CALLBACK_STMT is called. If CALLBACK_STMT indicates | |
1698 | that it has handled all the operands of the statement, its return | |
1699 | value is returned. Otherwise, the return value from CALLBACK_STMT | |
1700 | is discarded and its operands are scanned. | |
1701 | ||
1702 | If CALLBACK_STMT is NULL or it didn't handle the operands, | |
1703 | CALLBACK_OP is called on each operand of the statement via | |
1704 | walk_gimple_op. If walk_gimple_op returns non-NULL for any | |
1705 | operand, the remaining operands are not scanned. In this case, the | |
1706 | return value from CALLBACK_OP is returned. | |
1707 | ||
1708 | In any other case, NULL_TREE is returned. */ | |
1709 | ||
1710 | tree | |
1711 | walk_gimple_stmt (gimple_stmt_iterator *gsi, walk_stmt_fn callback_stmt, | |
1712 | walk_tree_fn callback_op, struct walk_stmt_info *wi) | |
1713 | { | |
1714 | gimple ret; | |
1715 | tree tree_ret; | |
1716 | gimple stmt = gsi_stmt (*gsi); | |
1717 | ||
1718 | if (wi) | |
0a35513e AH |
1719 | { |
1720 | wi->gsi = *gsi; | |
1721 | wi->removed_stmt = false; | |
726a989a | 1722 | |
0a35513e AH |
1723 | if (wi->want_locations && gimple_has_location (stmt)) |
1724 | input_location = gimple_location (stmt); | |
1725 | } | |
726a989a RB |
1726 | |
1727 | ret = NULL; | |
1728 | ||
1729 | /* Invoke the statement callback. Return if the callback handled | |
1730 | all of STMT operands by itself. */ | |
1731 | if (callback_stmt) | |
1732 | { | |
1733 | bool handled_ops = false; | |
1734 | tree_ret = callback_stmt (gsi, &handled_ops, wi); | |
1735 | if (handled_ops) | |
1736 | return tree_ret; | |
1737 | ||
1738 | /* If CALLBACK_STMT did not handle operands, it should not have | |
1739 | a value to return. */ | |
1740 | gcc_assert (tree_ret == NULL); | |
1741 | ||
0a35513e AH |
1742 | if (wi && wi->removed_stmt) |
1743 | return NULL; | |
1744 | ||
726a989a RB |
1745 | /* Re-read stmt in case the callback changed it. */ |
1746 | stmt = gsi_stmt (*gsi); | |
1747 | } | |
1748 | ||
1749 | /* If CALLBACK_OP is defined, invoke it on every operand of STMT. */ | |
1750 | if (callback_op) | |
1751 | { | |
1752 | tree_ret = walk_gimple_op (stmt, callback_op, wi); | |
1753 | if (tree_ret) | |
1754 | return tree_ret; | |
1755 | } | |
1756 | ||
1757 | /* If STMT can have statements inside (e.g. GIMPLE_BIND), walk them. */ | |
1758 | switch (gimple_code (stmt)) | |
1759 | { | |
1760 | case GIMPLE_BIND: | |
355a7673 MM |
1761 | ret = walk_gimple_seq_mod (gimple_bind_body_ptr (stmt), callback_stmt, |
1762 | callback_op, wi); | |
726a989a RB |
1763 | if (ret) |
1764 | return wi->callback_result; | |
1765 | break; | |
1766 | ||
1767 | case GIMPLE_CATCH: | |
355a7673 MM |
1768 | ret = walk_gimple_seq_mod (gimple_catch_handler_ptr (stmt), callback_stmt, |
1769 | callback_op, wi); | |
726a989a RB |
1770 | if (ret) |
1771 | return wi->callback_result; | |
1772 | break; | |
1773 | ||
1774 | case GIMPLE_EH_FILTER: | |
355a7673 | 1775 | ret = walk_gimple_seq_mod (gimple_eh_filter_failure_ptr (stmt), callback_stmt, |
726a989a RB |
1776 | callback_op, wi); |
1777 | if (ret) | |
1778 | return wi->callback_result; | |
1779 | break; | |
1780 | ||
0a35513e | 1781 | case GIMPLE_EH_ELSE: |
355a7673 | 1782 | ret = walk_gimple_seq_mod (gimple_eh_else_n_body_ptr (stmt), |
0a35513e AH |
1783 | callback_stmt, callback_op, wi); |
1784 | if (ret) | |
1785 | return wi->callback_result; | |
355a7673 | 1786 | ret = walk_gimple_seq_mod (gimple_eh_else_e_body_ptr (stmt), |
0a35513e AH |
1787 | callback_stmt, callback_op, wi); |
1788 | if (ret) | |
1789 | return wi->callback_result; | |
1790 | break; | |
1791 | ||
726a989a | 1792 | case GIMPLE_TRY: |
355a7673 | 1793 | ret = walk_gimple_seq_mod (gimple_try_eval_ptr (stmt), callback_stmt, callback_op, |
726a989a RB |
1794 | wi); |
1795 | if (ret) | |
1796 | return wi->callback_result; | |
1797 | ||
355a7673 | 1798 | ret = walk_gimple_seq_mod (gimple_try_cleanup_ptr (stmt), callback_stmt, |
726a989a RB |
1799 | callback_op, wi); |
1800 | if (ret) | |
1801 | return wi->callback_result; | |
1802 | break; | |
1803 | ||
1804 | case GIMPLE_OMP_FOR: | |
355a7673 | 1805 | ret = walk_gimple_seq_mod (gimple_omp_for_pre_body_ptr (stmt), callback_stmt, |
726a989a RB |
1806 | callback_op, wi); |
1807 | if (ret) | |
1808 | return wi->callback_result; | |
1809 | ||
1810 | /* FALL THROUGH. */ | |
1811 | case GIMPLE_OMP_CRITICAL: | |
1812 | case GIMPLE_OMP_MASTER: | |
1813 | case GIMPLE_OMP_ORDERED: | |
1814 | case GIMPLE_OMP_SECTION: | |
1815 | case GIMPLE_OMP_PARALLEL: | |
1816 | case GIMPLE_OMP_TASK: | |
1817 | case GIMPLE_OMP_SECTIONS: | |
1818 | case GIMPLE_OMP_SINGLE: | |
355a7673 | 1819 | ret = walk_gimple_seq_mod (gimple_omp_body_ptr (stmt), callback_stmt, |
0a35513e | 1820 | callback_op, wi); |
726a989a RB |
1821 | if (ret) |
1822 | return wi->callback_result; | |
1823 | break; | |
1824 | ||
1825 | case GIMPLE_WITH_CLEANUP_EXPR: | |
355a7673 | 1826 | ret = walk_gimple_seq_mod (gimple_wce_cleanup_ptr (stmt), callback_stmt, |
726a989a RB |
1827 | callback_op, wi); |
1828 | if (ret) | |
1829 | return wi->callback_result; | |
1830 | break; | |
1831 | ||
0a35513e | 1832 | case GIMPLE_TRANSACTION: |
355a7673 | 1833 | ret = walk_gimple_seq_mod (gimple_transaction_body_ptr (stmt), |
0a35513e AH |
1834 | callback_stmt, callback_op, wi); |
1835 | if (ret) | |
1836 | return wi->callback_result; | |
1837 | break; | |
1838 | ||
726a989a RB |
1839 | default: |
1840 | gcc_assert (!gimple_has_substatements (stmt)); | |
1841 | break; | |
1842 | } | |
1843 | ||
1844 | return NULL; | |
1845 | } | |
1846 | ||
1847 | ||
1848 | /* Set sequence SEQ to be the GIMPLE body for function FN. */ | |
1849 | ||
1850 | void | |
1851 | gimple_set_body (tree fndecl, gimple_seq seq) | |
1852 | { | |
1853 | struct function *fn = DECL_STRUCT_FUNCTION (fndecl); | |
1854 | if (fn == NULL) | |
1855 | { | |
1856 | /* If FNDECL still does not have a function structure associated | |
1857 | with it, then it does not make sense for it to receive a | |
1858 | GIMPLE body. */ | |
1859 | gcc_assert (seq == NULL); | |
1860 | } | |
1861 | else | |
1862 | fn->gimple_body = seq; | |
1863 | } | |
1864 | ||
1865 | ||
abbd64b9 JS |
1866 | /* Return the body of GIMPLE statements for function FN. After the |
1867 | CFG pass, the function body doesn't exist anymore because it has | |
1868 | been split up into basic blocks. In this case, it returns | |
1869 | NULL. */ | |
726a989a RB |
1870 | |
1871 | gimple_seq | |
1872 | gimple_body (tree fndecl) | |
1873 | { | |
1874 | struct function *fn = DECL_STRUCT_FUNCTION (fndecl); | |
1875 | return fn ? fn->gimple_body : NULL; | |
1876 | } | |
1877 | ||
39ecc018 JH |
1878 | /* Return true when FNDECL has Gimple body either in unlowered |
1879 | or CFG form. */ | |
1880 | bool | |
1881 | gimple_has_body_p (tree fndecl) | |
1882 | { | |
1883 | struct function *fn = DECL_STRUCT_FUNCTION (fndecl); | |
1884 | return (gimple_body (fndecl) || (fn && fn->cfg)); | |
1885 | } | |
726a989a | 1886 | |
25583c4f RS |
1887 | /* Return true if calls C1 and C2 are known to go to the same function. */ |
1888 | ||
1889 | bool | |
1890 | gimple_call_same_target_p (const_gimple c1, const_gimple c2) | |
1891 | { | |
1892 | if (gimple_call_internal_p (c1)) | |
1893 | return (gimple_call_internal_p (c2) | |
1894 | && gimple_call_internal_fn (c1) == gimple_call_internal_fn (c2)); | |
1895 | else | |
1896 | return (gimple_call_fn (c1) == gimple_call_fn (c2) | |
1897 | || (gimple_call_fndecl (c1) | |
1898 | && gimple_call_fndecl (c1) == gimple_call_fndecl (c2))); | |
1899 | } | |
1900 | ||
726a989a RB |
1901 | /* Detect flags from a GIMPLE_CALL. This is just like |
1902 | call_expr_flags, but for gimple tuples. */ | |
1903 | ||
1904 | int | |
1905 | gimple_call_flags (const_gimple stmt) | |
1906 | { | |
1907 | int flags; | |
1908 | tree decl = gimple_call_fndecl (stmt); | |
726a989a RB |
1909 | |
1910 | if (decl) | |
1911 | flags = flags_from_decl_or_type (decl); | |
25583c4f RS |
1912 | else if (gimple_call_internal_p (stmt)) |
1913 | flags = internal_fn_flags (gimple_call_internal_fn (stmt)); | |
726a989a | 1914 | else |
97e03fa1 | 1915 | flags = flags_from_decl_or_type (gimple_call_fntype (stmt)); |
726a989a | 1916 | |
9bb1a81b JM |
1917 | if (stmt->gsbase.subcode & GF_CALL_NOTHROW) |
1918 | flags |= ECF_NOTHROW; | |
1919 | ||
726a989a RB |
1920 | return flags; |
1921 | } | |
1922 | ||
25583c4f RS |
1923 | /* Return the "fn spec" string for call STMT. */ |
1924 | ||
1925 | static tree | |
1926 | gimple_call_fnspec (const_gimple stmt) | |
1927 | { | |
1928 | tree type, attr; | |
1929 | ||
1930 | type = gimple_call_fntype (stmt); | |
1931 | if (!type) | |
1932 | return NULL_TREE; | |
1933 | ||
1934 | attr = lookup_attribute ("fn spec", TYPE_ATTRIBUTES (type)); | |
1935 | if (!attr) | |
1936 | return NULL_TREE; | |
1937 | ||
1938 | return TREE_VALUE (TREE_VALUE (attr)); | |
1939 | } | |
1940 | ||
0b7b376d RG |
1941 | /* Detects argument flags for argument number ARG on call STMT. */ |
1942 | ||
1943 | int | |
1944 | gimple_call_arg_flags (const_gimple stmt, unsigned arg) | |
1945 | { | |
25583c4f | 1946 | tree attr = gimple_call_fnspec (stmt); |
0b7b376d | 1947 | |
25583c4f | 1948 | if (!attr || 1 + arg >= (unsigned) TREE_STRING_LENGTH (attr)) |
0b7b376d RG |
1949 | return 0; |
1950 | ||
1951 | switch (TREE_STRING_POINTER (attr)[1 + arg]) | |
1952 | { | |
1953 | case 'x': | |
1954 | case 'X': | |
1955 | return EAF_UNUSED; | |
1956 | ||
1957 | case 'R': | |
1958 | return EAF_DIRECT | EAF_NOCLOBBER | EAF_NOESCAPE; | |
1959 | ||
1960 | case 'r': | |
1961 | return EAF_NOCLOBBER | EAF_NOESCAPE; | |
1962 | ||
1963 | case 'W': | |
1964 | return EAF_DIRECT | EAF_NOESCAPE; | |
1965 | ||
1966 | case 'w': | |
1967 | return EAF_NOESCAPE; | |
1968 | ||
1969 | case '.': | |
1970 | default: | |
1971 | return 0; | |
1972 | } | |
1973 | } | |
1974 | ||
1975 | /* Detects return flags for the call STMT. */ | |
1976 | ||
1977 | int | |
1978 | gimple_call_return_flags (const_gimple stmt) | |
1979 | { | |
25583c4f | 1980 | tree attr; |
0b7b376d RG |
1981 | |
1982 | if (gimple_call_flags (stmt) & ECF_MALLOC) | |
1983 | return ERF_NOALIAS; | |
1984 | ||
25583c4f RS |
1985 | attr = gimple_call_fnspec (stmt); |
1986 | if (!attr || TREE_STRING_LENGTH (attr) < 1) | |
0b7b376d RG |
1987 | return 0; |
1988 | ||
1989 | switch (TREE_STRING_POINTER (attr)[0]) | |
1990 | { | |
1991 | case '1': | |
1992 | case '2': | |
1993 | case '3': | |
1994 | case '4': | |
1995 | return ERF_RETURNS_ARG | (TREE_STRING_POINTER (attr)[0] - '1'); | |
1996 | ||
1997 | case 'm': | |
1998 | return ERF_NOALIAS; | |
1999 | ||
2000 | case '.': | |
2001 | default: | |
2002 | return 0; | |
2003 | } | |
2004 | } | |
726a989a | 2005 | |
3dbe9454 | 2006 | |
726a989a RB |
2007 | /* Return true if GS is a copy assignment. */ |
2008 | ||
2009 | bool | |
2010 | gimple_assign_copy_p (gimple gs) | |
2011 | { | |
3dbe9454 RG |
2012 | return (gimple_assign_single_p (gs) |
2013 | && is_gimple_val (gimple_op (gs, 1))); | |
726a989a RB |
2014 | } |
2015 | ||
2016 | ||
2017 | /* Return true if GS is a SSA_NAME copy assignment. */ | |
2018 | ||
2019 | bool | |
2020 | gimple_assign_ssa_name_copy_p (gimple gs) | |
2021 | { | |
3dbe9454 | 2022 | return (gimple_assign_single_p (gs) |
726a989a RB |
2023 | && TREE_CODE (gimple_assign_lhs (gs)) == SSA_NAME |
2024 | && TREE_CODE (gimple_assign_rhs1 (gs)) == SSA_NAME); | |
2025 | } | |
2026 | ||
2027 | ||
726a989a RB |
2028 | /* Return true if GS is an assignment with a unary RHS, but the |
2029 | operator has no effect on the assigned value. The logic is adapted | |
2030 | from STRIP_NOPS. This predicate is intended to be used in tuplifying | |
2031 | instances in which STRIP_NOPS was previously applied to the RHS of | |
2032 | an assignment. | |
2033 | ||
2034 | NOTE: In the use cases that led to the creation of this function | |
2035 | and of gimple_assign_single_p, it is typical to test for either | |
2036 | condition and to proceed in the same manner. In each case, the | |
2037 | assigned value is represented by the single RHS operand of the | |
2038 | assignment. I suspect there may be cases where gimple_assign_copy_p, | |
2039 | gimple_assign_single_p, or equivalent logic is used where a similar | |
2040 | treatment of unary NOPs is appropriate. */ | |
b8698a0f | 2041 | |
726a989a RB |
2042 | bool |
2043 | gimple_assign_unary_nop_p (gimple gs) | |
2044 | { | |
3dbe9454 | 2045 | return (is_gimple_assign (gs) |
1a87cf0c | 2046 | && (CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (gs)) |
726a989a RB |
2047 | || gimple_assign_rhs_code (gs) == NON_LVALUE_EXPR) |
2048 | && gimple_assign_rhs1 (gs) != error_mark_node | |
2049 | && (TYPE_MODE (TREE_TYPE (gimple_assign_lhs (gs))) | |
2050 | == TYPE_MODE (TREE_TYPE (gimple_assign_rhs1 (gs))))); | |
2051 | } | |
2052 | ||
2053 | /* Set BB to be the basic block holding G. */ | |
2054 | ||
2055 | void | |
2056 | gimple_set_bb (gimple stmt, basic_block bb) | |
2057 | { | |
2058 | stmt->gsbase.bb = bb; | |
2059 | ||
2060 | /* If the statement is a label, add the label to block-to-labels map | |
2061 | so that we can speed up edge creation for GIMPLE_GOTOs. */ | |
2062 | if (cfun->cfg && gimple_code (stmt) == GIMPLE_LABEL) | |
2063 | { | |
2064 | tree t; | |
2065 | int uid; | |
2066 | ||
2067 | t = gimple_label_label (stmt); | |
2068 | uid = LABEL_DECL_UID (t); | |
2069 | if (uid == -1) | |
2070 | { | |
2071 | unsigned old_len = VEC_length (basic_block, label_to_block_map); | |
2072 | LABEL_DECL_UID (t) = uid = cfun->cfg->last_label_uid++; | |
2073 | if (old_len <= (unsigned) uid) | |
2074 | { | |
5006671f | 2075 | unsigned new_len = 3 * uid / 2 + 1; |
726a989a RB |
2076 | |
2077 | VEC_safe_grow_cleared (basic_block, gc, label_to_block_map, | |
2078 | new_len); | |
2079 | } | |
2080 | } | |
2081 | ||
2082 | VEC_replace (basic_block, label_to_block_map, uid, bb); | |
2083 | } | |
2084 | } | |
2085 | ||
2086 | ||
726a989a RB |
2087 | /* Modify the RHS of the assignment pointed-to by GSI using the |
2088 | operands in the expression tree EXPR. | |
2089 | ||
2090 | NOTE: The statement pointed-to by GSI may be reallocated if it | |
2091 | did not have enough operand slots. | |
2092 | ||
2093 | This function is useful to convert an existing tree expression into | |
2094 | the flat representation used for the RHS of a GIMPLE assignment. | |
2095 | It will reallocate memory as needed to expand or shrink the number | |
2096 | of operand slots needed to represent EXPR. | |
2097 | ||
2098 | NOTE: If you find yourself building a tree and then calling this | |
2099 | function, you are most certainly doing it the slow way. It is much | |
2100 | better to build a new assignment or to use the function | |
2101 | gimple_assign_set_rhs_with_ops, which does not require an | |
2102 | expression tree to be built. */ | |
2103 | ||
2104 | void | |
2105 | gimple_assign_set_rhs_from_tree (gimple_stmt_iterator *gsi, tree expr) | |
2106 | { | |
2107 | enum tree_code subcode; | |
0354c0c7 | 2108 | tree op1, op2, op3; |
726a989a | 2109 | |
0354c0c7 BS |
2110 | extract_ops_from_tree_1 (expr, &subcode, &op1, &op2, &op3); |
2111 | gimple_assign_set_rhs_with_ops_1 (gsi, subcode, op1, op2, op3); | |
726a989a RB |
2112 | } |
2113 | ||
2114 | ||
2115 | /* Set the RHS of assignment statement pointed-to by GSI to CODE with | |
0354c0c7 | 2116 | operands OP1, OP2 and OP3. |
726a989a RB |
2117 | |
2118 | NOTE: The statement pointed-to by GSI may be reallocated if it | |
2119 | did not have enough operand slots. */ | |
2120 | ||
2121 | void | |
0354c0c7 BS |
2122 | gimple_assign_set_rhs_with_ops_1 (gimple_stmt_iterator *gsi, enum tree_code code, |
2123 | tree op1, tree op2, tree op3) | |
726a989a RB |
2124 | { |
2125 | unsigned new_rhs_ops = get_gimple_rhs_num_ops (code); | |
2126 | gimple stmt = gsi_stmt (*gsi); | |
2127 | ||
2128 | /* If the new CODE needs more operands, allocate a new statement. */ | |
2129 | if (gimple_num_ops (stmt) < new_rhs_ops + 1) | |
2130 | { | |
2131 | tree lhs = gimple_assign_lhs (stmt); | |
2132 | gimple new_stmt = gimple_alloc (gimple_code (stmt), new_rhs_ops + 1); | |
2133 | memcpy (new_stmt, stmt, gimple_size (gimple_code (stmt))); | |
355a7673 | 2134 | gimple_init_singleton (new_stmt); |
726a989a RB |
2135 | gsi_replace (gsi, new_stmt, true); |
2136 | stmt = new_stmt; | |
2137 | ||
2138 | /* The LHS needs to be reset as this also changes the SSA name | |
2139 | on the LHS. */ | |
2140 | gimple_assign_set_lhs (stmt, lhs); | |
2141 | } | |
2142 | ||
2143 | gimple_set_num_ops (stmt, new_rhs_ops + 1); | |
2144 | gimple_set_subcode (stmt, code); | |
2145 | gimple_assign_set_rhs1 (stmt, op1); | |
2146 | if (new_rhs_ops > 1) | |
2147 | gimple_assign_set_rhs2 (stmt, op2); | |
0354c0c7 BS |
2148 | if (new_rhs_ops > 2) |
2149 | gimple_assign_set_rhs3 (stmt, op3); | |
726a989a RB |
2150 | } |
2151 | ||
2152 | ||
2153 | /* Return the LHS of a statement that performs an assignment, | |
2154 | either a GIMPLE_ASSIGN or a GIMPLE_CALL. Returns NULL_TREE | |
2155 | for a call to a function that returns no value, or for a | |
2156 | statement other than an assignment or a call. */ | |
2157 | ||
2158 | tree | |
2159 | gimple_get_lhs (const_gimple stmt) | |
2160 | { | |
e0c68ce9 | 2161 | enum gimple_code code = gimple_code (stmt); |
726a989a RB |
2162 | |
2163 | if (code == GIMPLE_ASSIGN) | |
2164 | return gimple_assign_lhs (stmt); | |
2165 | else if (code == GIMPLE_CALL) | |
2166 | return gimple_call_lhs (stmt); | |
2167 | else | |
2168 | return NULL_TREE; | |
2169 | } | |
2170 | ||
2171 | ||
2172 | /* Set the LHS of a statement that performs an assignment, | |
2173 | either a GIMPLE_ASSIGN or a GIMPLE_CALL. */ | |
2174 | ||
2175 | void | |
2176 | gimple_set_lhs (gimple stmt, tree lhs) | |
2177 | { | |
e0c68ce9 | 2178 | enum gimple_code code = gimple_code (stmt); |
726a989a RB |
2179 | |
2180 | if (code == GIMPLE_ASSIGN) | |
2181 | gimple_assign_set_lhs (stmt, lhs); | |
2182 | else if (code == GIMPLE_CALL) | |
2183 | gimple_call_set_lhs (stmt, lhs); | |
2184 | else | |
2185 | gcc_unreachable(); | |
2186 | } | |
2187 | ||
21cf7180 AO |
2188 | /* Replace the LHS of STMT, an assignment, either a GIMPLE_ASSIGN or a |
2189 | GIMPLE_CALL, with NLHS, in preparation for modifying the RHS to an | |
2190 | expression with a different value. | |
2191 | ||
2192 | This will update any annotations (say debug bind stmts) referring | |
2193 | to the original LHS, so that they use the RHS instead. This is | |
2194 | done even if NLHS and LHS are the same, for it is understood that | |
2195 | the RHS will be modified afterwards, and NLHS will not be assigned | |
2196 | an equivalent value. | |
2197 | ||
2198 | Adjusting any non-annotation uses of the LHS, if needed, is a | |
2199 | responsibility of the caller. | |
2200 | ||
2201 | The effect of this call should be pretty much the same as that of | |
2202 | inserting a copy of STMT before STMT, and then removing the | |
2203 | original stmt, at which time gsi_remove() would have update | |
2204 | annotations, but using this function saves all the inserting, | |
2205 | copying and removing. */ | |
2206 | ||
2207 | void | |
2208 | gimple_replace_lhs (gimple stmt, tree nlhs) | |
2209 | { | |
2210 | if (MAY_HAVE_DEBUG_STMTS) | |
2211 | { | |
2212 | tree lhs = gimple_get_lhs (stmt); | |
2213 | ||
2214 | gcc_assert (SSA_NAME_DEF_STMT (lhs) == stmt); | |
2215 | ||
2216 | insert_debug_temp_for_var_def (NULL, lhs); | |
2217 | } | |
2218 | ||
2219 | gimple_set_lhs (stmt, nlhs); | |
2220 | } | |
726a989a RB |
2221 | |
2222 | /* Return a deep copy of statement STMT. All the operands from STMT | |
2223 | are reallocated and copied using unshare_expr. The DEF, USE, VDEF | |
355a7673 MM |
2224 | and VUSE operand arrays are set to empty in the new copy. The new |
2225 | copy isn't part of any sequence. */ | |
726a989a RB |
2226 | |
2227 | gimple | |
2228 | gimple_copy (gimple stmt) | |
2229 | { | |
2230 | enum gimple_code code = gimple_code (stmt); | |
2231 | unsigned num_ops = gimple_num_ops (stmt); | |
2232 | gimple copy = gimple_alloc (code, num_ops); | |
2233 | unsigned i; | |
2234 | ||
2235 | /* Shallow copy all the fields from STMT. */ | |
2236 | memcpy (copy, stmt, gimple_size (code)); | |
355a7673 | 2237 | gimple_init_singleton (copy); |
726a989a RB |
2238 | |
2239 | /* If STMT has sub-statements, deep-copy them as well. */ | |
2240 | if (gimple_has_substatements (stmt)) | |
2241 | { | |
2242 | gimple_seq new_seq; | |
2243 | tree t; | |
2244 | ||
2245 | switch (gimple_code (stmt)) | |
2246 | { | |
2247 | case GIMPLE_BIND: | |
2248 | new_seq = gimple_seq_copy (gimple_bind_body (stmt)); | |
2249 | gimple_bind_set_body (copy, new_seq); | |
2250 | gimple_bind_set_vars (copy, unshare_expr (gimple_bind_vars (stmt))); | |
2251 | gimple_bind_set_block (copy, gimple_bind_block (stmt)); | |
2252 | break; | |
2253 | ||
2254 | case GIMPLE_CATCH: | |
2255 | new_seq = gimple_seq_copy (gimple_catch_handler (stmt)); | |
2256 | gimple_catch_set_handler (copy, new_seq); | |
2257 | t = unshare_expr (gimple_catch_types (stmt)); | |
2258 | gimple_catch_set_types (copy, t); | |
2259 | break; | |
2260 | ||
2261 | case GIMPLE_EH_FILTER: | |
2262 | new_seq = gimple_seq_copy (gimple_eh_filter_failure (stmt)); | |
2263 | gimple_eh_filter_set_failure (copy, new_seq); | |
2264 | t = unshare_expr (gimple_eh_filter_types (stmt)); | |
2265 | gimple_eh_filter_set_types (copy, t); | |
2266 | break; | |
2267 | ||
0a35513e AH |
2268 | case GIMPLE_EH_ELSE: |
2269 | new_seq = gimple_seq_copy (gimple_eh_else_n_body (stmt)); | |
2270 | gimple_eh_else_set_n_body (copy, new_seq); | |
2271 | new_seq = gimple_seq_copy (gimple_eh_else_e_body (stmt)); | |
2272 | gimple_eh_else_set_e_body (copy, new_seq); | |
2273 | break; | |
2274 | ||
726a989a RB |
2275 | case GIMPLE_TRY: |
2276 | new_seq = gimple_seq_copy (gimple_try_eval (stmt)); | |
2277 | gimple_try_set_eval (copy, new_seq); | |
2278 | new_seq = gimple_seq_copy (gimple_try_cleanup (stmt)); | |
2279 | gimple_try_set_cleanup (copy, new_seq); | |
2280 | break; | |
2281 | ||
2282 | case GIMPLE_OMP_FOR: | |
2283 | new_seq = gimple_seq_copy (gimple_omp_for_pre_body (stmt)); | |
2284 | gimple_omp_for_set_pre_body (copy, new_seq); | |
2285 | t = unshare_expr (gimple_omp_for_clauses (stmt)); | |
2286 | gimple_omp_for_set_clauses (copy, t); | |
2287 | copy->gimple_omp_for.iter | |
a9429e29 LB |
2288 | = ggc_alloc_vec_gimple_omp_for_iter |
2289 | (gimple_omp_for_collapse (stmt)); | |
726a989a RB |
2290 | for (i = 0; i < gimple_omp_for_collapse (stmt); i++) |
2291 | { | |
2292 | gimple_omp_for_set_cond (copy, i, | |
2293 | gimple_omp_for_cond (stmt, i)); | |
2294 | gimple_omp_for_set_index (copy, i, | |
2295 | gimple_omp_for_index (stmt, i)); | |
2296 | t = unshare_expr (gimple_omp_for_initial (stmt, i)); | |
2297 | gimple_omp_for_set_initial (copy, i, t); | |
2298 | t = unshare_expr (gimple_omp_for_final (stmt, i)); | |
2299 | gimple_omp_for_set_final (copy, i, t); | |
2300 | t = unshare_expr (gimple_omp_for_incr (stmt, i)); | |
2301 | gimple_omp_for_set_incr (copy, i, t); | |
2302 | } | |
2303 | goto copy_omp_body; | |
2304 | ||
2305 | case GIMPLE_OMP_PARALLEL: | |
2306 | t = unshare_expr (gimple_omp_parallel_clauses (stmt)); | |
2307 | gimple_omp_parallel_set_clauses (copy, t); | |
2308 | t = unshare_expr (gimple_omp_parallel_child_fn (stmt)); | |
2309 | gimple_omp_parallel_set_child_fn (copy, t); | |
2310 | t = unshare_expr (gimple_omp_parallel_data_arg (stmt)); | |
2311 | gimple_omp_parallel_set_data_arg (copy, t); | |
2312 | goto copy_omp_body; | |
2313 | ||
2314 | case GIMPLE_OMP_TASK: | |
2315 | t = unshare_expr (gimple_omp_task_clauses (stmt)); | |
2316 | gimple_omp_task_set_clauses (copy, t); | |
2317 | t = unshare_expr (gimple_omp_task_child_fn (stmt)); | |
2318 | gimple_omp_task_set_child_fn (copy, t); | |
2319 | t = unshare_expr (gimple_omp_task_data_arg (stmt)); | |
2320 | gimple_omp_task_set_data_arg (copy, t); | |
2321 | t = unshare_expr (gimple_omp_task_copy_fn (stmt)); | |
2322 | gimple_omp_task_set_copy_fn (copy, t); | |
2323 | t = unshare_expr (gimple_omp_task_arg_size (stmt)); | |
2324 | gimple_omp_task_set_arg_size (copy, t); | |
2325 | t = unshare_expr (gimple_omp_task_arg_align (stmt)); | |
2326 | gimple_omp_task_set_arg_align (copy, t); | |
2327 | goto copy_omp_body; | |
2328 | ||
2329 | case GIMPLE_OMP_CRITICAL: | |
2330 | t = unshare_expr (gimple_omp_critical_name (stmt)); | |
2331 | gimple_omp_critical_set_name (copy, t); | |
2332 | goto copy_omp_body; | |
2333 | ||
2334 | case GIMPLE_OMP_SECTIONS: | |
2335 | t = unshare_expr (gimple_omp_sections_clauses (stmt)); | |
2336 | gimple_omp_sections_set_clauses (copy, t); | |
2337 | t = unshare_expr (gimple_omp_sections_control (stmt)); | |
2338 | gimple_omp_sections_set_control (copy, t); | |
2339 | /* FALLTHRU */ | |
2340 | ||
2341 | case GIMPLE_OMP_SINGLE: | |
2342 | case GIMPLE_OMP_SECTION: | |
2343 | case GIMPLE_OMP_MASTER: | |
2344 | case GIMPLE_OMP_ORDERED: | |
2345 | copy_omp_body: | |
2346 | new_seq = gimple_seq_copy (gimple_omp_body (stmt)); | |
2347 | gimple_omp_set_body (copy, new_seq); | |
2348 | break; | |
2349 | ||
0a35513e AH |
2350 | case GIMPLE_TRANSACTION: |
2351 | new_seq = gimple_seq_copy (gimple_transaction_body (stmt)); | |
2352 | gimple_transaction_set_body (copy, new_seq); | |
2353 | break; | |
2354 | ||
726a989a RB |
2355 | case GIMPLE_WITH_CLEANUP_EXPR: |
2356 | new_seq = gimple_seq_copy (gimple_wce_cleanup (stmt)); | |
2357 | gimple_wce_set_cleanup (copy, new_seq); | |
2358 | break; | |
2359 | ||
2360 | default: | |
2361 | gcc_unreachable (); | |
2362 | } | |
2363 | } | |
2364 | ||
2365 | /* Make copy of operands. */ | |
2366 | if (num_ops > 0) | |
2367 | { | |
2368 | for (i = 0; i < num_ops; i++) | |
2369 | gimple_set_op (copy, i, unshare_expr (gimple_op (stmt, i))); | |
2370 | ||
ccacdf06 | 2371 | /* Clear out SSA operand vectors on COPY. */ |
726a989a RB |
2372 | if (gimple_has_ops (stmt)) |
2373 | { | |
2374 | gimple_set_def_ops (copy, NULL); | |
2375 | gimple_set_use_ops (copy, NULL); | |
726a989a RB |
2376 | } |
2377 | ||
2378 | if (gimple_has_mem_ops (stmt)) | |
2379 | { | |
5006671f RG |
2380 | gimple_set_vdef (copy, gimple_vdef (stmt)); |
2381 | gimple_set_vuse (copy, gimple_vuse (stmt)); | |
726a989a RB |
2382 | } |
2383 | ||
5006671f RG |
2384 | /* SSA operands need to be updated. */ |
2385 | gimple_set_modified (copy, true); | |
726a989a RB |
2386 | } |
2387 | ||
2388 | return copy; | |
2389 | } | |
2390 | ||
2391 | ||
726a989a RB |
2392 | /* Return true if statement S has side-effects. We consider a |
2393 | statement to have side effects if: | |
2394 | ||
2395 | - It is a GIMPLE_CALL not marked with ECF_PURE or ECF_CONST. | |
2396 | - Any of its operands are marked TREE_THIS_VOLATILE or TREE_SIDE_EFFECTS. */ | |
2397 | ||
2398 | bool | |
2399 | gimple_has_side_effects (const_gimple s) | |
2400 | { | |
b5b8b0ac AO |
2401 | if (is_gimple_debug (s)) |
2402 | return false; | |
2403 | ||
726a989a RB |
2404 | /* We don't have to scan the arguments to check for |
2405 | volatile arguments, though, at present, we still | |
2406 | do a scan to check for TREE_SIDE_EFFECTS. */ | |
2407 | if (gimple_has_volatile_ops (s)) | |
2408 | return true; | |
2409 | ||
179184e3 RG |
2410 | if (gimple_code (s) == GIMPLE_ASM |
2411 | && gimple_asm_volatile_p (s)) | |
2412 | return true; | |
2413 | ||
726a989a RB |
2414 | if (is_gimple_call (s)) |
2415 | { | |
723afc44 | 2416 | int flags = gimple_call_flags (s); |
726a989a | 2417 | |
723afc44 RG |
2418 | /* An infinite loop is considered a side effect. */ |
2419 | if (!(flags & (ECF_CONST | ECF_PURE)) | |
2420 | || (flags & ECF_LOOPING_CONST_OR_PURE)) | |
726a989a RB |
2421 | return true; |
2422 | ||
726a989a RB |
2423 | return false; |
2424 | } | |
726a989a RB |
2425 | |
2426 | return false; | |
2427 | } | |
2428 | ||
726a989a | 2429 | /* Helper for gimple_could_trap_p and gimple_assign_rhs_could_trap_p. |
e1fd038a SP |
2430 | Return true if S can trap. When INCLUDE_MEM is true, check whether |
2431 | the memory operations could trap. When INCLUDE_STORES is true and | |
2432 | S is a GIMPLE_ASSIGN, the LHS of the assignment is also checked. */ | |
726a989a | 2433 | |
e1fd038a SP |
2434 | bool |
2435 | gimple_could_trap_p_1 (gimple s, bool include_mem, bool include_stores) | |
726a989a | 2436 | { |
726a989a RB |
2437 | tree t, div = NULL_TREE; |
2438 | enum tree_code op; | |
2439 | ||
e1fd038a SP |
2440 | if (include_mem) |
2441 | { | |
2442 | unsigned i, start = (is_gimple_assign (s) && !include_stores) ? 1 : 0; | |
726a989a | 2443 | |
e1fd038a SP |
2444 | for (i = start; i < gimple_num_ops (s); i++) |
2445 | if (tree_could_trap_p (gimple_op (s, i))) | |
2446 | return true; | |
2447 | } | |
726a989a RB |
2448 | |
2449 | switch (gimple_code (s)) | |
2450 | { | |
2451 | case GIMPLE_ASM: | |
2452 | return gimple_asm_volatile_p (s); | |
2453 | ||
2454 | case GIMPLE_CALL: | |
2455 | t = gimple_call_fndecl (s); | |
2456 | /* Assume that calls to weak functions may trap. */ | |
2457 | if (!t || !DECL_P (t) || DECL_WEAK (t)) | |
2458 | return true; | |
2459 | return false; | |
2460 | ||
2461 | case GIMPLE_ASSIGN: | |
2462 | t = gimple_expr_type (s); | |
2463 | op = gimple_assign_rhs_code (s); | |
2464 | if (get_gimple_rhs_class (op) == GIMPLE_BINARY_RHS) | |
2465 | div = gimple_assign_rhs2 (s); | |
2466 | return (operation_could_trap_p (op, FLOAT_TYPE_P (t), | |
2467 | (INTEGRAL_TYPE_P (t) | |
2468 | && TYPE_OVERFLOW_TRAPS (t)), | |
2469 | div)); | |
2470 | ||
2471 | default: | |
2472 | break; | |
2473 | } | |
2474 | ||
2475 | return false; | |
726a989a RB |
2476 | } |
2477 | ||
726a989a RB |
2478 | /* Return true if statement S can trap. */ |
2479 | ||
2480 | bool | |
2481 | gimple_could_trap_p (gimple s) | |
2482 | { | |
e1fd038a | 2483 | return gimple_could_trap_p_1 (s, true, true); |
726a989a RB |
2484 | } |
2485 | ||
726a989a RB |
2486 | /* Return true if RHS of a GIMPLE_ASSIGN S can trap. */ |
2487 | ||
2488 | bool | |
2489 | gimple_assign_rhs_could_trap_p (gimple s) | |
2490 | { | |
2491 | gcc_assert (is_gimple_assign (s)); | |
e1fd038a | 2492 | return gimple_could_trap_p_1 (s, true, false); |
726a989a RB |
2493 | } |
2494 | ||
2495 | ||
2496 | /* Print debugging information for gimple stmts generated. */ | |
2497 | ||
2498 | void | |
2499 | dump_gimple_statistics (void) | |
2500 | { | |
726a989a RB |
2501 | int i, total_tuples = 0, total_bytes = 0; |
2502 | ||
7aa6d18a SB |
2503 | if (! GATHER_STATISTICS) |
2504 | { | |
2505 | fprintf (stderr, "No gimple statistics\n"); | |
2506 | return; | |
2507 | } | |
2508 | ||
726a989a RB |
2509 | fprintf (stderr, "\nGIMPLE statements\n"); |
2510 | fprintf (stderr, "Kind Stmts Bytes\n"); | |
2511 | fprintf (stderr, "---------------------------------------\n"); | |
2512 | for (i = 0; i < (int) gimple_alloc_kind_all; ++i) | |
2513 | { | |
2514 | fprintf (stderr, "%-20s %7d %10d\n", gimple_alloc_kind_names[i], | |
2515 | gimple_alloc_counts[i], gimple_alloc_sizes[i]); | |
2516 | total_tuples += gimple_alloc_counts[i]; | |
2517 | total_bytes += gimple_alloc_sizes[i]; | |
2518 | } | |
2519 | fprintf (stderr, "---------------------------------------\n"); | |
2520 | fprintf (stderr, "%-20s %7d %10d\n", "Total", total_tuples, total_bytes); | |
2521 | fprintf (stderr, "---------------------------------------\n"); | |
726a989a RB |
2522 | } |
2523 | ||
2524 | ||
726a989a RB |
2525 | /* Return the number of operands needed on the RHS of a GIMPLE |
2526 | assignment for an expression with tree code CODE. */ | |
2527 | ||
2528 | unsigned | |
2529 | get_gimple_rhs_num_ops (enum tree_code code) | |
2530 | { | |
2531 | enum gimple_rhs_class rhs_class = get_gimple_rhs_class (code); | |
2532 | ||
2533 | if (rhs_class == GIMPLE_UNARY_RHS || rhs_class == GIMPLE_SINGLE_RHS) | |
2534 | return 1; | |
2535 | else if (rhs_class == GIMPLE_BINARY_RHS) | |
2536 | return 2; | |
0354c0c7 BS |
2537 | else if (rhs_class == GIMPLE_TERNARY_RHS) |
2538 | return 3; | |
726a989a RB |
2539 | else |
2540 | gcc_unreachable (); | |
2541 | } | |
2542 | ||
2543 | #define DEFTREECODE(SYM, STRING, TYPE, NARGS) \ | |
2544 | (unsigned char) \ | |
2545 | ((TYPE) == tcc_unary ? GIMPLE_UNARY_RHS \ | |
2546 | : ((TYPE) == tcc_binary \ | |
2547 | || (TYPE) == tcc_comparison) ? GIMPLE_BINARY_RHS \ | |
2548 | : ((TYPE) == tcc_constant \ | |
2549 | || (TYPE) == tcc_declaration \ | |
2550 | || (TYPE) == tcc_reference) ? GIMPLE_SINGLE_RHS \ | |
2551 | : ((SYM) == TRUTH_AND_EXPR \ | |
2552 | || (SYM) == TRUTH_OR_EXPR \ | |
2553 | || (SYM) == TRUTH_XOR_EXPR) ? GIMPLE_BINARY_RHS \ | |
2554 | : (SYM) == TRUTH_NOT_EXPR ? GIMPLE_UNARY_RHS \ | |
4e71066d RG |
2555 | : ((SYM) == COND_EXPR \ |
2556 | || (SYM) == WIDEN_MULT_PLUS_EXPR \ | |
16949072 | 2557 | || (SYM) == WIDEN_MULT_MINUS_EXPR \ |
f471fe72 RG |
2558 | || (SYM) == DOT_PROD_EXPR \ |
2559 | || (SYM) == REALIGN_LOAD_EXPR \ | |
4e71066d | 2560 | || (SYM) == VEC_COND_EXPR \ |
2205ed25 | 2561 | || (SYM) == VEC_PERM_EXPR \ |
16949072 | 2562 | || (SYM) == FMA_EXPR) ? GIMPLE_TERNARY_RHS \ |
4e71066d | 2563 | : ((SYM) == CONSTRUCTOR \ |
726a989a RB |
2564 | || (SYM) == OBJ_TYPE_REF \ |
2565 | || (SYM) == ASSERT_EXPR \ | |
2566 | || (SYM) == ADDR_EXPR \ | |
2567 | || (SYM) == WITH_SIZE_EXPR \ | |
4e71066d | 2568 | || (SYM) == SSA_NAME) ? GIMPLE_SINGLE_RHS \ |
726a989a RB |
2569 | : GIMPLE_INVALID_RHS), |
2570 | #define END_OF_BASE_TREE_CODES (unsigned char) GIMPLE_INVALID_RHS, | |
2571 | ||
2572 | const unsigned char gimple_rhs_class_table[] = { | |
2573 | #include "all-tree.def" | |
2574 | }; | |
2575 | ||
2576 | #undef DEFTREECODE | |
2577 | #undef END_OF_BASE_TREE_CODES | |
2578 | ||
2579 | /* For the definitive definition of GIMPLE, see doc/tree-ssa.texi. */ | |
2580 | ||
2581 | /* Validation of GIMPLE expressions. */ | |
2582 | ||
726a989a RB |
2583 | /* Return true if T is a valid LHS for a GIMPLE assignment expression. */ |
2584 | ||
2585 | bool | |
2586 | is_gimple_lvalue (tree t) | |
2587 | { | |
2588 | return (is_gimple_addressable (t) | |
2589 | || TREE_CODE (t) == WITH_SIZE_EXPR | |
2590 | /* These are complex lvalues, but don't have addresses, so they | |
2591 | go here. */ | |
2592 | || TREE_CODE (t) == BIT_FIELD_REF); | |
2593 | } | |
2594 | ||
2595 | /* Return true if T is a GIMPLE condition. */ | |
2596 | ||
2597 | bool | |
2598 | is_gimple_condexpr (tree t) | |
2599 | { | |
2600 | return (is_gimple_val (t) || (COMPARISON_CLASS_P (t) | |
f9613c9a | 2601 | && !tree_could_throw_p (t) |
726a989a RB |
2602 | && is_gimple_val (TREE_OPERAND (t, 0)) |
2603 | && is_gimple_val (TREE_OPERAND (t, 1)))); | |
2604 | } | |
2605 | ||
2606 | /* Return true if T is something whose address can be taken. */ | |
2607 | ||
2608 | bool | |
2609 | is_gimple_addressable (tree t) | |
2610 | { | |
70f34814 RG |
2611 | return (is_gimple_id (t) || handled_component_p (t) |
2612 | || TREE_CODE (t) == MEM_REF); | |
726a989a RB |
2613 | } |
2614 | ||
2615 | /* Return true if T is a valid gimple constant. */ | |
2616 | ||
2617 | bool | |
2618 | is_gimple_constant (const_tree t) | |
2619 | { | |
2620 | switch (TREE_CODE (t)) | |
2621 | { | |
2622 | case INTEGER_CST: | |
2623 | case REAL_CST: | |
2624 | case FIXED_CST: | |
2625 | case STRING_CST: | |
2626 | case COMPLEX_CST: | |
2627 | case VECTOR_CST: | |
2628 | return true; | |
2629 | ||
2630 | /* Vector constant constructors are gimple invariant. */ | |
2631 | case CONSTRUCTOR: | |
2632 | if (TREE_TYPE (t) && TREE_CODE (TREE_TYPE (t)) == VECTOR_TYPE) | |
2633 | return TREE_CONSTANT (t); | |
2634 | else | |
2635 | return false; | |
2636 | ||
2637 | default: | |
2638 | return false; | |
2639 | } | |
2640 | } | |
2641 | ||
2642 | /* Return true if T is a gimple address. */ | |
2643 | ||
2644 | bool | |
2645 | is_gimple_address (const_tree t) | |
2646 | { | |
2647 | tree op; | |
2648 | ||
2649 | if (TREE_CODE (t) != ADDR_EXPR) | |
2650 | return false; | |
2651 | ||
2652 | op = TREE_OPERAND (t, 0); | |
2653 | while (handled_component_p (op)) | |
2654 | { | |
2655 | if ((TREE_CODE (op) == ARRAY_REF | |
2656 | || TREE_CODE (op) == ARRAY_RANGE_REF) | |
2657 | && !is_gimple_val (TREE_OPERAND (op, 1))) | |
2658 | return false; | |
2659 | ||
2660 | op = TREE_OPERAND (op, 0); | |
2661 | } | |
2662 | ||
70f34814 | 2663 | if (CONSTANT_CLASS_P (op) || TREE_CODE (op) == MEM_REF) |
726a989a RB |
2664 | return true; |
2665 | ||
2666 | switch (TREE_CODE (op)) | |
2667 | { | |
2668 | case PARM_DECL: | |
2669 | case RESULT_DECL: | |
2670 | case LABEL_DECL: | |
2671 | case FUNCTION_DECL: | |
2672 | case VAR_DECL: | |
2673 | case CONST_DECL: | |
2674 | return true; | |
2675 | ||
2676 | default: | |
2677 | return false; | |
2678 | } | |
2679 | } | |
2680 | ||
00fc2333 JH |
2681 | /* Return true if T is a gimple invariant address. */ |
2682 | ||
2683 | bool | |
2684 | is_gimple_invariant_address (const_tree t) | |
2685 | { | |
2686 | const_tree op; | |
2687 | ||
2688 | if (TREE_CODE (t) != ADDR_EXPR) | |
2689 | return false; | |
2690 | ||
2691 | op = strip_invariant_refs (TREE_OPERAND (t, 0)); | |
70f34814 RG |
2692 | if (!op) |
2693 | return false; | |
00fc2333 | 2694 | |
70f34814 RG |
2695 | if (TREE_CODE (op) == MEM_REF) |
2696 | { | |
2697 | const_tree op0 = TREE_OPERAND (op, 0); | |
2698 | return (TREE_CODE (op0) == ADDR_EXPR | |
2699 | && (CONSTANT_CLASS_P (TREE_OPERAND (op0, 0)) | |
2700 | || decl_address_invariant_p (TREE_OPERAND (op0, 0)))); | |
2701 | } | |
2702 | ||
2703 | return CONSTANT_CLASS_P (op) || decl_address_invariant_p (op); | |
00fc2333 JH |
2704 | } |
2705 | ||
2706 | /* Return true if T is a gimple invariant address at IPA level | |
2707 | (so addresses of variables on stack are not allowed). */ | |
2708 | ||
2709 | bool | |
2710 | is_gimple_ip_invariant_address (const_tree t) | |
2711 | { | |
2712 | const_tree op; | |
2713 | ||
2714 | if (TREE_CODE (t) != ADDR_EXPR) | |
2715 | return false; | |
2716 | ||
2717 | op = strip_invariant_refs (TREE_OPERAND (t, 0)); | |
39cc8c3d MJ |
2718 | if (!op) |
2719 | return false; | |
2720 | ||
2721 | if (TREE_CODE (op) == MEM_REF) | |
2722 | { | |
2723 | const_tree op0 = TREE_OPERAND (op, 0); | |
2724 | return (TREE_CODE (op0) == ADDR_EXPR | |
2725 | && (CONSTANT_CLASS_P (TREE_OPERAND (op0, 0)) | |
2726 | || decl_address_ip_invariant_p (TREE_OPERAND (op0, 0)))); | |
2727 | } | |
00fc2333 | 2728 | |
39cc8c3d | 2729 | return CONSTANT_CLASS_P (op) || decl_address_ip_invariant_p (op); |
726a989a RB |
2730 | } |
2731 | ||
2732 | /* Return true if T is a GIMPLE minimal invariant. It's a restricted | |
2733 | form of function invariant. */ | |
2734 | ||
2735 | bool | |
2736 | is_gimple_min_invariant (const_tree t) | |
2737 | { | |
2738 | if (TREE_CODE (t) == ADDR_EXPR) | |
2739 | return is_gimple_invariant_address (t); | |
2740 | ||
2741 | return is_gimple_constant (t); | |
2742 | } | |
2743 | ||
00fc2333 JH |
2744 | /* Return true if T is a GIMPLE interprocedural invariant. It's a restricted |
2745 | form of gimple minimal invariant. */ | |
2746 | ||
2747 | bool | |
2748 | is_gimple_ip_invariant (const_tree t) | |
2749 | { | |
2750 | if (TREE_CODE (t) == ADDR_EXPR) | |
2751 | return is_gimple_ip_invariant_address (t); | |
2752 | ||
2753 | return is_gimple_constant (t); | |
2754 | } | |
2755 | ||
726a989a RB |
2756 | /* Return true if T is a variable. */ |
2757 | ||
2758 | bool | |
2759 | is_gimple_variable (tree t) | |
2760 | { | |
2761 | return (TREE_CODE (t) == VAR_DECL | |
2762 | || TREE_CODE (t) == PARM_DECL | |
2763 | || TREE_CODE (t) == RESULT_DECL | |
2764 | || TREE_CODE (t) == SSA_NAME); | |
2765 | } | |
2766 | ||
2767 | /* Return true if T is a GIMPLE identifier (something with an address). */ | |
2768 | ||
2769 | bool | |
2770 | is_gimple_id (tree t) | |
2771 | { | |
2772 | return (is_gimple_variable (t) | |
2773 | || TREE_CODE (t) == FUNCTION_DECL | |
2774 | || TREE_CODE (t) == LABEL_DECL | |
2775 | || TREE_CODE (t) == CONST_DECL | |
2776 | /* Allow string constants, since they are addressable. */ | |
2777 | || TREE_CODE (t) == STRING_CST); | |
2778 | } | |
2779 | ||
726a989a RB |
2780 | /* Return true if T is a non-aggregate register variable. */ |
2781 | ||
2782 | bool | |
2783 | is_gimple_reg (tree t) | |
2784 | { | |
a471762f | 2785 | if (virtual_operand_p (t)) |
3828719a | 2786 | return false; |
726a989a | 2787 | |
a471762f RG |
2788 | if (TREE_CODE (t) == SSA_NAME) |
2789 | return true; | |
2790 | ||
726a989a RB |
2791 | if (!is_gimple_variable (t)) |
2792 | return false; | |
2793 | ||
2794 | if (!is_gimple_reg_type (TREE_TYPE (t))) | |
2795 | return false; | |
2796 | ||
2797 | /* A volatile decl is not acceptable because we can't reuse it as | |
2798 | needed. We need to copy it into a temp first. */ | |
2799 | if (TREE_THIS_VOLATILE (t)) | |
2800 | return false; | |
2801 | ||
2802 | /* We define "registers" as things that can be renamed as needed, | |
2803 | which with our infrastructure does not apply to memory. */ | |
2804 | if (needs_to_live_in_memory (t)) | |
2805 | return false; | |
2806 | ||
2807 | /* Hard register variables are an interesting case. For those that | |
2808 | are call-clobbered, we don't know where all the calls are, since | |
2809 | we don't (want to) take into account which operations will turn | |
2810 | into libcalls at the rtl level. For those that are call-saved, | |
2811 | we don't currently model the fact that calls may in fact change | |
2812 | global hard registers, nor do we examine ASM_CLOBBERS at the tree | |
2813 | level, and so miss variable changes that might imply. All around, | |
2814 | it seems safest to not do too much optimization with these at the | |
2815 | tree level at all. We'll have to rely on the rtl optimizers to | |
2816 | clean this up, as there we've got all the appropriate bits exposed. */ | |
2817 | if (TREE_CODE (t) == VAR_DECL && DECL_HARD_REGISTER (t)) | |
2818 | return false; | |
2819 | ||
4636b850 RG |
2820 | /* Complex and vector values must have been put into SSA-like form. |
2821 | That is, no assignments to the individual components. */ | |
2822 | if (TREE_CODE (TREE_TYPE (t)) == COMPLEX_TYPE | |
2823 | || TREE_CODE (TREE_TYPE (t)) == VECTOR_TYPE) | |
2824 | return DECL_GIMPLE_REG_P (t); | |
2825 | ||
726a989a RB |
2826 | return true; |
2827 | } | |
2828 | ||
2829 | ||
726a989a RB |
2830 | /* Return true if T is a GIMPLE rvalue, i.e. an identifier or a constant. */ |
2831 | ||
2832 | bool | |
2833 | is_gimple_val (tree t) | |
2834 | { | |
2835 | /* Make loads from volatiles and memory vars explicit. */ | |
2836 | if (is_gimple_variable (t) | |
2837 | && is_gimple_reg_type (TREE_TYPE (t)) | |
2838 | && !is_gimple_reg (t)) | |
2839 | return false; | |
2840 | ||
726a989a RB |
2841 | return (is_gimple_variable (t) || is_gimple_min_invariant (t)); |
2842 | } | |
2843 | ||
2844 | /* Similarly, but accept hard registers as inputs to asm statements. */ | |
2845 | ||
2846 | bool | |
2847 | is_gimple_asm_val (tree t) | |
2848 | { | |
2849 | if (TREE_CODE (t) == VAR_DECL && DECL_HARD_REGISTER (t)) | |
2850 | return true; | |
2851 | ||
2852 | return is_gimple_val (t); | |
2853 | } | |
2854 | ||
2855 | /* Return true if T is a GIMPLE minimal lvalue. */ | |
2856 | ||
2857 | bool | |
2858 | is_gimple_min_lval (tree t) | |
2859 | { | |
ba4d8f9d RG |
2860 | if (!(t = CONST_CAST_TREE (strip_invariant_refs (t)))) |
2861 | return false; | |
70f34814 | 2862 | return (is_gimple_id (t) || TREE_CODE (t) == MEM_REF); |
726a989a RB |
2863 | } |
2864 | ||
726a989a RB |
2865 | /* Return true if T is a valid function operand of a CALL_EXPR. */ |
2866 | ||
2867 | bool | |
2868 | is_gimple_call_addr (tree t) | |
2869 | { | |
2870 | return (TREE_CODE (t) == OBJ_TYPE_REF || is_gimple_val (t)); | |
2871 | } | |
2872 | ||
70f34814 RG |
2873 | /* Return true if T is a valid address operand of a MEM_REF. */ |
2874 | ||
2875 | bool | |
2876 | is_gimple_mem_ref_addr (tree t) | |
2877 | { | |
2878 | return (is_gimple_reg (t) | |
2879 | || TREE_CODE (t) == INTEGER_CST | |
2880 | || (TREE_CODE (t) == ADDR_EXPR | |
2881 | && (CONSTANT_CLASS_P (TREE_OPERAND (t, 0)) | |
2882 | || decl_address_invariant_p (TREE_OPERAND (t, 0))))); | |
2883 | } | |
2884 | ||
726a989a RB |
2885 | |
2886 | /* Given a memory reference expression T, return its base address. | |
2887 | The base address of a memory reference expression is the main | |
2888 | object being referenced. For instance, the base address for | |
2889 | 'array[i].fld[j]' is 'array'. You can think of this as stripping | |
2890 | away the offset part from a memory address. | |
2891 | ||
2892 | This function calls handled_component_p to strip away all the inner | |
2893 | parts of the memory reference until it reaches the base object. */ | |
2894 | ||
2895 | tree | |
2896 | get_base_address (tree t) | |
2897 | { | |
2898 | while (handled_component_p (t)) | |
2899 | t = TREE_OPERAND (t, 0); | |
b8698a0f | 2900 | |
4d948885 RG |
2901 | if ((TREE_CODE (t) == MEM_REF |
2902 | || TREE_CODE (t) == TARGET_MEM_REF) | |
70f34814 RG |
2903 | && TREE_CODE (TREE_OPERAND (t, 0)) == ADDR_EXPR) |
2904 | t = TREE_OPERAND (TREE_OPERAND (t, 0), 0); | |
2905 | ||
b3b9f3d0 JH |
2906 | if (TREE_CODE (t) == SSA_NAME |
2907 | || DECL_P (t) | |
726a989a RB |
2908 | || TREE_CODE (t) == STRING_CST |
2909 | || TREE_CODE (t) == CONSTRUCTOR | |
70f34814 | 2910 | || INDIRECT_REF_P (t) |
4d948885 RG |
2911 | || TREE_CODE (t) == MEM_REF |
2912 | || TREE_CODE (t) == TARGET_MEM_REF) | |
726a989a RB |
2913 | return t; |
2914 | else | |
2915 | return NULL_TREE; | |
2916 | } | |
2917 | ||
2918 | void | |
2919 | recalculate_side_effects (tree t) | |
2920 | { | |
2921 | enum tree_code code = TREE_CODE (t); | |
2922 | int len = TREE_OPERAND_LENGTH (t); | |
2923 | int i; | |
2924 | ||
2925 | switch (TREE_CODE_CLASS (code)) | |
2926 | { | |
2927 | case tcc_expression: | |
2928 | switch (code) | |
2929 | { | |
2930 | case INIT_EXPR: | |
2931 | case MODIFY_EXPR: | |
2932 | case VA_ARG_EXPR: | |
2933 | case PREDECREMENT_EXPR: | |
2934 | case PREINCREMENT_EXPR: | |
2935 | case POSTDECREMENT_EXPR: | |
2936 | case POSTINCREMENT_EXPR: | |
2937 | /* All of these have side-effects, no matter what their | |
2938 | operands are. */ | |
2939 | return; | |
2940 | ||
2941 | default: | |
2942 | break; | |
2943 | } | |
2944 | /* Fall through. */ | |
2945 | ||
2946 | case tcc_comparison: /* a comparison expression */ | |
2947 | case tcc_unary: /* a unary arithmetic expression */ | |
2948 | case tcc_binary: /* a binary arithmetic expression */ | |
2949 | case tcc_reference: /* a reference */ | |
2950 | case tcc_vl_exp: /* a function call */ | |
2951 | TREE_SIDE_EFFECTS (t) = TREE_THIS_VOLATILE (t); | |
2952 | for (i = 0; i < len; ++i) | |
2953 | { | |
2954 | tree op = TREE_OPERAND (t, i); | |
2955 | if (op && TREE_SIDE_EFFECTS (op)) | |
2956 | TREE_SIDE_EFFECTS (t) = 1; | |
2957 | } | |
2958 | break; | |
2959 | ||
13f95bdb EB |
2960 | case tcc_constant: |
2961 | /* No side-effects. */ | |
2962 | return; | |
2963 | ||
726a989a | 2964 | default: |
726a989a RB |
2965 | gcc_unreachable (); |
2966 | } | |
2967 | } | |
2968 | ||
2969 | /* Canonicalize a tree T for use in a COND_EXPR as conditional. Returns | |
2970 | a canonicalized tree that is valid for a COND_EXPR or NULL_TREE, if | |
2971 | we failed to create one. */ | |
2972 | ||
2973 | tree | |
2974 | canonicalize_cond_expr_cond (tree t) | |
2975 | { | |
b66a1bac RG |
2976 | /* Strip conversions around boolean operations. */ |
2977 | if (CONVERT_EXPR_P (t) | |
9b80d091 KT |
2978 | && (truth_value_p (TREE_CODE (TREE_OPERAND (t, 0))) |
2979 | || TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) | |
2980 | == BOOLEAN_TYPE)) | |
b66a1bac RG |
2981 | t = TREE_OPERAND (t, 0); |
2982 | ||
726a989a | 2983 | /* For !x use x == 0. */ |
12430896 | 2984 | if (TREE_CODE (t) == TRUTH_NOT_EXPR) |
726a989a RB |
2985 | { |
2986 | tree top0 = TREE_OPERAND (t, 0); | |
2987 | t = build2 (EQ_EXPR, TREE_TYPE (t), | |
2988 | top0, build_int_cst (TREE_TYPE (top0), 0)); | |
2989 | } | |
2990 | /* For cmp ? 1 : 0 use cmp. */ | |
2991 | else if (TREE_CODE (t) == COND_EXPR | |
2992 | && COMPARISON_CLASS_P (TREE_OPERAND (t, 0)) | |
2993 | && integer_onep (TREE_OPERAND (t, 1)) | |
2994 | && integer_zerop (TREE_OPERAND (t, 2))) | |
2995 | { | |
2996 | tree top0 = TREE_OPERAND (t, 0); | |
2997 | t = build2 (TREE_CODE (top0), TREE_TYPE (t), | |
2998 | TREE_OPERAND (top0, 0), TREE_OPERAND (top0, 1)); | |
2999 | } | |
3000 | ||
3001 | if (is_gimple_condexpr (t)) | |
3002 | return t; | |
3003 | ||
3004 | return NULL_TREE; | |
3005 | } | |
3006 | ||
e6c99067 DN |
3007 | /* Build a GIMPLE_CALL identical to STMT but skipping the arguments in |
3008 | the positions marked by the set ARGS_TO_SKIP. */ | |
3009 | ||
c6f7cfc1 | 3010 | gimple |
5c0466b5 | 3011 | gimple_call_copy_skip_args (gimple stmt, bitmap args_to_skip) |
c6f7cfc1 JH |
3012 | { |
3013 | int i; | |
c6f7cfc1 JH |
3014 | int nargs = gimple_call_num_args (stmt); |
3015 | VEC(tree, heap) *vargs = VEC_alloc (tree, heap, nargs); | |
3016 | gimple new_stmt; | |
3017 | ||
3018 | for (i = 0; i < nargs; i++) | |
3019 | if (!bitmap_bit_p (args_to_skip, i)) | |
3020 | VEC_quick_push (tree, vargs, gimple_call_arg (stmt, i)); | |
3021 | ||
25583c4f RS |
3022 | if (gimple_call_internal_p (stmt)) |
3023 | new_stmt = gimple_build_call_internal_vec (gimple_call_internal_fn (stmt), | |
3024 | vargs); | |
3025 | else | |
3026 | new_stmt = gimple_build_call_vec (gimple_call_fn (stmt), vargs); | |
c6f7cfc1 JH |
3027 | VEC_free (tree, heap, vargs); |
3028 | if (gimple_call_lhs (stmt)) | |
3029 | gimple_call_set_lhs (new_stmt, gimple_call_lhs (stmt)); | |
3030 | ||
5006671f RG |
3031 | gimple_set_vuse (new_stmt, gimple_vuse (stmt)); |
3032 | gimple_set_vdef (new_stmt, gimple_vdef (stmt)); | |
3033 | ||
c6f7cfc1 JH |
3034 | gimple_set_block (new_stmt, gimple_block (stmt)); |
3035 | if (gimple_has_location (stmt)) | |
3036 | gimple_set_location (new_stmt, gimple_location (stmt)); | |
8d2adc24 | 3037 | gimple_call_copy_flags (new_stmt, stmt); |
c6f7cfc1 | 3038 | gimple_call_set_chain (new_stmt, gimple_call_chain (stmt)); |
5006671f RG |
3039 | |
3040 | gimple_set_modified (new_stmt, true); | |
3041 | ||
c6f7cfc1 JH |
3042 | return new_stmt; |
3043 | } | |
3044 | ||
5006671f | 3045 | |
0ca8de87 RG |
3046 | enum gtc_mode { GTC_MERGE = 0, GTC_DIAG = 1 }; |
3047 | ||
b5e04de5 | 3048 | static hashval_t gimple_type_hash (const void *); |
d7f09764 DN |
3049 | |
3050 | /* Structure used to maintain a cache of some type pairs compared by | |
3051 | gimple_types_compatible_p when comparing aggregate types. There are | |
c4fcd06a | 3052 | three possible values for SAME_P: |
d7f09764 DN |
3053 | |
3054 | -2: The pair (T1, T2) has just been inserted in the table. | |
d7f09764 DN |
3055 | 0: T1 and T2 are different types. |
3056 | 1: T1 and T2 are the same type. | |
3057 | ||
c4fcd06a RG |
3058 | The two elements in the SAME_P array are indexed by the comparison |
3059 | mode gtc_mode. */ | |
3060 | ||
d7f09764 DN |
3061 | struct type_pair_d |
3062 | { | |
88ca1146 RG |
3063 | unsigned int uid1; |
3064 | unsigned int uid2; | |
c4fcd06a | 3065 | signed char same_p[2]; |
d7f09764 DN |
3066 | }; |
3067 | typedef struct type_pair_d *type_pair_t; | |
d4398a43 RG |
3068 | DEF_VEC_P(type_pair_t); |
3069 | DEF_VEC_ALLOC_P(type_pair_t,heap); | |
3070 | ||
a30726a4 JH |
3071 | #define GIMPLE_TYPE_PAIR_SIZE 16381 |
3072 | struct type_pair_d *type_pair_cache; | |
d7f09764 | 3073 | |
d7f09764 DN |
3074 | |
3075 | /* Lookup the pair of types T1 and T2 in *VISITED_P. Insert a new | |
3076 | entry if none existed. */ | |
3077 | ||
a30726a4 JH |
3078 | static inline type_pair_t |
3079 | lookup_type_pair (tree t1, tree t2) | |
d7f09764 | 3080 | { |
a30726a4 JH |
3081 | unsigned int index; |
3082 | unsigned int uid1, uid2; | |
d7f09764 | 3083 | |
a30726a4 JH |
3084 | if (type_pair_cache == NULL) |
3085 | type_pair_cache = XCNEWVEC (struct type_pair_d, GIMPLE_TYPE_PAIR_SIZE); | |
d7f09764 | 3086 | |
4fc07af9 JH |
3087 | if (TYPE_UID (t1) < TYPE_UID (t2)) |
3088 | { | |
a30726a4 JH |
3089 | uid1 = TYPE_UID (t1); |
3090 | uid2 = TYPE_UID (t2); | |
4fc07af9 JH |
3091 | } |
3092 | else | |
3093 | { | |
a30726a4 JH |
3094 | uid1 = TYPE_UID (t2); |
3095 | uid2 = TYPE_UID (t1); | |
4fc07af9 | 3096 | } |
a30726a4 | 3097 | gcc_checking_assert (uid1 != uid2); |
d7f09764 | 3098 | |
a30726a4 JH |
3099 | /* iterative_hash_hashval_t imply an function calls. |
3100 | We know that UIDS are in limited range. */ | |
3101 | index = ((((unsigned HOST_WIDE_INT)uid1 << HOST_BITS_PER_WIDE_INT / 2) + uid2) | |
3102 | % GIMPLE_TYPE_PAIR_SIZE); | |
3103 | if (type_pair_cache [index].uid1 == uid1 | |
3104 | && type_pair_cache [index].uid2 == uid2) | |
3105 | return &type_pair_cache[index]; | |
d7f09764 | 3106 | |
a30726a4 JH |
3107 | type_pair_cache [index].uid1 = uid1; |
3108 | type_pair_cache [index].uid2 = uid2; | |
3109 | type_pair_cache [index].same_p[0] = -2; | |
3110 | type_pair_cache [index].same_p[1] = -2; | |
3111 | ||
3112 | return &type_pair_cache[index]; | |
d7f09764 DN |
3113 | } |
3114 | ||
d4398a43 RG |
3115 | /* Per pointer state for the SCC finding. The on_sccstack flag |
3116 | is not strictly required, it is true when there is no hash value | |
3117 | recorded for the type and false otherwise. But querying that | |
3118 | is slower. */ | |
3119 | ||
3120 | struct sccs | |
3121 | { | |
3122 | unsigned int dfsnum; | |
3123 | unsigned int low; | |
3124 | bool on_sccstack; | |
3125 | union { | |
3126 | hashval_t hash; | |
c4fcd06a | 3127 | signed char same_p; |
d4398a43 RG |
3128 | } u; |
3129 | }; | |
3130 | ||
3131 | static unsigned int next_dfs_num; | |
3132 | static unsigned int gtc_next_dfs_num; | |
d7f09764 | 3133 | |
4490cae6 RG |
3134 | |
3135 | /* GIMPLE type merging cache. A direct-mapped cache based on TYPE_UID. */ | |
3136 | ||
3137 | typedef struct GTY(()) gimple_type_leader_entry_s { | |
3138 | tree type; | |
3139 | tree leader; | |
3140 | } gimple_type_leader_entry; | |
3141 | ||
3142 | #define GIMPLE_TYPE_LEADER_SIZE 16381 | |
e89964e3 MM |
3143 | static GTY((deletable, length("GIMPLE_TYPE_LEADER_SIZE"))) |
3144 | gimple_type_leader_entry *gimple_type_leader; | |
4490cae6 RG |
3145 | |
3146 | /* Lookup an existing leader for T and return it or NULL_TREE, if | |
3147 | there is none in the cache. */ | |
3148 | ||
4fc07af9 | 3149 | static inline tree |
4490cae6 RG |
3150 | gimple_lookup_type_leader (tree t) |
3151 | { | |
3152 | gimple_type_leader_entry *leader; | |
3153 | ||
3154 | if (!gimple_type_leader) | |
3155 | return NULL_TREE; | |
3156 | ||
3157 | leader = &gimple_type_leader[TYPE_UID (t) % GIMPLE_TYPE_LEADER_SIZE]; | |
3158 | if (leader->type != t) | |
3159 | return NULL_TREE; | |
3160 | ||
3161 | return leader->leader; | |
3162 | } | |
3163 | ||
77785f4f RG |
3164 | /* Return true if T1 and T2 have the same name. If FOR_COMPLETION_P is |
3165 | true then if any type has no name return false, otherwise return | |
3166 | true if both types have no names. */ | |
d7f09764 DN |
3167 | |
3168 | static bool | |
6a20ce76 | 3169 | compare_type_names_p (tree t1, tree t2) |
d7f09764 DN |
3170 | { |
3171 | tree name1 = TYPE_NAME (t1); | |
3172 | tree name2 = TYPE_NAME (t2); | |
3173 | ||
ee7a54c5 RG |
3174 | if ((name1 != NULL_TREE) != (name2 != NULL_TREE)) |
3175 | return false; | |
3176 | ||
3177 | if (name1 == NULL_TREE) | |
3178 | return true; | |
3179 | ||
3180 | /* Either both should be a TYPE_DECL or both an IDENTIFIER_NODE. */ | |
3181 | if (TREE_CODE (name1) != TREE_CODE (name2)) | |
3182 | return false; | |
3183 | ||
3184 | if (TREE_CODE (name1) == TYPE_DECL) | |
6a20ce76 RG |
3185 | name1 = DECL_NAME (name1); |
3186 | gcc_checking_assert (!name1 || TREE_CODE (name1) == IDENTIFIER_NODE); | |
d7f09764 | 3187 | |
ee7a54c5 | 3188 | if (TREE_CODE (name2) == TYPE_DECL) |
6a20ce76 RG |
3189 | name2 = DECL_NAME (name2); |
3190 | gcc_checking_assert (!name2 || TREE_CODE (name2) == IDENTIFIER_NODE); | |
d7f09764 DN |
3191 | |
3192 | /* Identifiers can be compared with pointer equality rather | |
3193 | than a string comparison. */ | |
3194 | if (name1 == name2) | |
3195 | return true; | |
3196 | ||
3197 | return false; | |
3198 | } | |
3199 | ||
d025732d EB |
3200 | /* Return true if the field decls F1 and F2 are at the same offset. |
3201 | ||
91f2fae8 | 3202 | This is intended to be used on GIMPLE types only. */ |
d7f09764 | 3203 | |
1e4bc4eb | 3204 | bool |
d025732d | 3205 | gimple_compare_field_offset (tree f1, tree f2) |
d7f09764 DN |
3206 | { |
3207 | if (DECL_OFFSET_ALIGN (f1) == DECL_OFFSET_ALIGN (f2)) | |
d025732d EB |
3208 | { |
3209 | tree offset1 = DECL_FIELD_OFFSET (f1); | |
3210 | tree offset2 = DECL_FIELD_OFFSET (f2); | |
3211 | return ((offset1 == offset2 | |
3212 | /* Once gimplification is done, self-referential offsets are | |
3213 | instantiated as operand #2 of the COMPONENT_REF built for | |
3214 | each access and reset. Therefore, they are not relevant | |
3215 | anymore and fields are interchangeable provided that they | |
3216 | represent the same access. */ | |
3217 | || (TREE_CODE (offset1) == PLACEHOLDER_EXPR | |
3218 | && TREE_CODE (offset2) == PLACEHOLDER_EXPR | |
3219 | && (DECL_SIZE (f1) == DECL_SIZE (f2) | |
3220 | || (TREE_CODE (DECL_SIZE (f1)) == PLACEHOLDER_EXPR | |
3221 | && TREE_CODE (DECL_SIZE (f2)) == PLACEHOLDER_EXPR) | |
3222 | || operand_equal_p (DECL_SIZE (f1), DECL_SIZE (f2), 0)) | |
3223 | && DECL_ALIGN (f1) == DECL_ALIGN (f2)) | |
3224 | || operand_equal_p (offset1, offset2, 0)) | |
3225 | && tree_int_cst_equal (DECL_FIELD_BIT_OFFSET (f1), | |
3226 | DECL_FIELD_BIT_OFFSET (f2))); | |
3227 | } | |
d7f09764 DN |
3228 | |
3229 | /* Fortran and C do not always agree on what DECL_OFFSET_ALIGN | |
3230 | should be, so handle differing ones specially by decomposing | |
3231 | the offset into a byte and bit offset manually. */ | |
3232 | if (host_integerp (DECL_FIELD_OFFSET (f1), 0) | |
3233 | && host_integerp (DECL_FIELD_OFFSET (f2), 0)) | |
3234 | { | |
3235 | unsigned HOST_WIDE_INT byte_offset1, byte_offset2; | |
3236 | unsigned HOST_WIDE_INT bit_offset1, bit_offset2; | |
3237 | bit_offset1 = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f1)); | |
3238 | byte_offset1 = (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f1)) | |
3239 | + bit_offset1 / BITS_PER_UNIT); | |
3240 | bit_offset2 = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f2)); | |
3241 | byte_offset2 = (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f2)) | |
3242 | + bit_offset2 / BITS_PER_UNIT); | |
3243 | if (byte_offset1 != byte_offset2) | |
3244 | return false; | |
3245 | return bit_offset1 % BITS_PER_UNIT == bit_offset2 % BITS_PER_UNIT; | |
3246 | } | |
3247 | ||
3248 | return false; | |
3249 | } | |
3250 | ||
d4398a43 | 3251 | static bool |
b5e04de5 | 3252 | gimple_types_compatible_p_1 (tree, tree, type_pair_t, |
c4fcd06a | 3253 | VEC(type_pair_t, heap) **, |
d4398a43 | 3254 | struct pointer_map_t *, struct obstack *); |
d7f09764 | 3255 | |
d4398a43 RG |
3256 | /* DFS visit the edge from the callers type pair with state *STATE to |
3257 | the pair T1, T2 while operating in FOR_MERGING_P mode. | |
3258 | Update the merging status if it is not part of the SCC containing the | |
3259 | callers pair and return it. | |
3260 | SCCSTACK, SCCSTATE and SCCSTATE_OBSTACK are state for the DFS walk done. */ | |
3261 | ||
3262 | static bool | |
b5e04de5 | 3263 | gtc_visit (tree t1, tree t2, |
d4398a43 RG |
3264 | struct sccs *state, |
3265 | VEC(type_pair_t, heap) **sccstack, | |
3266 | struct pointer_map_t *sccstate, | |
3267 | struct obstack *sccstate_obstack) | |
d7f09764 | 3268 | { |
d4398a43 RG |
3269 | struct sccs *cstate = NULL; |
3270 | type_pair_t p; | |
3271 | void **slot; | |
b5e04de5 | 3272 | tree leader1, leader2; |
d7f09764 DN |
3273 | |
3274 | /* Check first for the obvious case of pointer identity. */ | |
3275 | if (t1 == t2) | |
d4398a43 | 3276 | return true; |
d7f09764 DN |
3277 | |
3278 | /* Check that we have two types to compare. */ | |
3279 | if (t1 == NULL_TREE || t2 == NULL_TREE) | |
d4398a43 | 3280 | return false; |
d7f09764 DN |
3281 | |
3282 | /* Can't be the same type if the types don't have the same code. */ | |
3283 | if (TREE_CODE (t1) != TREE_CODE (t2)) | |
d4398a43 | 3284 | return false; |
b0cc341f RG |
3285 | |
3286 | /* Can't be the same type if they have different CV qualifiers. */ | |
3287 | if (TYPE_QUALS (t1) != TYPE_QUALS (t2)) | |
d4398a43 | 3288 | return false; |
d7f09764 | 3289 | |
61332f77 RG |
3290 | if (TREE_ADDRESSABLE (t1) != TREE_ADDRESSABLE (t2)) |
3291 | return false; | |
3292 | ||
3293 | /* Void types and nullptr types are always the same. */ | |
3294 | if (TREE_CODE (t1) == VOID_TYPE | |
3295 | || TREE_CODE (t1) == NULLPTR_TYPE) | |
d4398a43 | 3296 | return true; |
d7f09764 | 3297 | |
61332f77 RG |
3298 | /* Can't be the same type if they have different alignment or mode. */ |
3299 | if (TYPE_ALIGN (t1) != TYPE_ALIGN (t2) | |
3300 | || TYPE_MODE (t1) != TYPE_MODE (t2)) | |
3301 | return false; | |
3302 | ||
c9549072 | 3303 | /* Do some simple checks before doing three hashtable queries. */ |
b0cc341f RG |
3304 | if (INTEGRAL_TYPE_P (t1) |
3305 | || SCALAR_FLOAT_TYPE_P (t1) | |
3306 | || FIXED_POINT_TYPE_P (t1) | |
3307 | || TREE_CODE (t1) == VECTOR_TYPE | |
b23dc2c0 | 3308 | || TREE_CODE (t1) == COMPLEX_TYPE |
61332f77 RG |
3309 | || TREE_CODE (t1) == OFFSET_TYPE |
3310 | || POINTER_TYPE_P (t1)) | |
b0cc341f | 3311 | { |
61332f77 RG |
3312 | /* Can't be the same type if they have different sign or precision. */ |
3313 | if (TYPE_PRECISION (t1) != TYPE_PRECISION (t2) | |
b0cc341f | 3314 | || TYPE_UNSIGNED (t1) != TYPE_UNSIGNED (t2)) |
d4398a43 | 3315 | return false; |
b0cc341f RG |
3316 | |
3317 | if (TREE_CODE (t1) == INTEGER_TYPE | |
3ac8781c | 3318 | && TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2)) |
d4398a43 | 3319 | return false; |
b0cc341f RG |
3320 | |
3321 | /* That's all we need to check for float and fixed-point types. */ | |
3322 | if (SCALAR_FLOAT_TYPE_P (t1) | |
3323 | || FIXED_POINT_TYPE_P (t1)) | |
d4398a43 | 3324 | return true; |
b0cc341f | 3325 | |
073a8998 | 3326 | /* For other types fall through to more complex checks. */ |
b0cc341f | 3327 | } |
d7f09764 | 3328 | |
61332f77 RG |
3329 | /* If the types have been previously registered and found equal |
3330 | they still are. */ | |
3331 | leader1 = gimple_lookup_type_leader (t1); | |
3332 | leader2 = gimple_lookup_type_leader (t2); | |
3333 | if (leader1 == t2 | |
3334 | || t1 == leader2 | |
3335 | || (leader1 && leader1 == leader2)) | |
3336 | return true; | |
c9549072 | 3337 | |
d7f09764 DN |
3338 | /* If the hash values of t1 and t2 are different the types can't |
3339 | possibly be the same. This helps keeping the type-pair hashtable | |
3340 | small, only tracking comparisons for hash collisions. */ | |
b5e04de5 | 3341 | if (gimple_type_hash (t1) != gimple_type_hash (t2)) |
d4398a43 | 3342 | return false; |
d7f09764 | 3343 | |
d4398a43 | 3344 | /* Allocate a new cache entry for this comparison. */ |
a30726a4 | 3345 | p = lookup_type_pair (t1, t2); |
b5e04de5 | 3346 | if (p->same_p[GTC_MERGE] == 0 || p->same_p[GTC_MERGE] == 1) |
d7f09764 DN |
3347 | { |
3348 | /* We have already decided whether T1 and T2 are the | |
3349 | same, return the cached result. */ | |
b5e04de5 | 3350 | return p->same_p[GTC_MERGE] == 1; |
d7f09764 | 3351 | } |
d4398a43 | 3352 | |
d4398a43 RG |
3353 | if ((slot = pointer_map_contains (sccstate, p)) != NULL) |
3354 | cstate = (struct sccs *)*slot; | |
67701d1d | 3355 | /* Not yet visited. DFS recurse. */ |
d4398a43 | 3356 | if (!cstate) |
d7f09764 | 3357 | { |
b5e04de5 | 3358 | gimple_types_compatible_p_1 (t1, t2, p, |
67701d1d RG |
3359 | sccstack, sccstate, sccstate_obstack); |
3360 | cstate = (struct sccs *)* pointer_map_contains (sccstate, p); | |
d4398a43 | 3361 | state->low = MIN (state->low, cstate->low); |
d7f09764 | 3362 | } |
67701d1d | 3363 | /* If the type is still on the SCC stack adjust the parents low. */ |
d4398a43 RG |
3364 | if (cstate->dfsnum < state->dfsnum |
3365 | && cstate->on_sccstack) | |
3366 | state->low = MIN (cstate->dfsnum, state->low); | |
d7f09764 | 3367 | |
67701d1d RG |
3368 | /* Return the current lattice value. We start with an equality |
3369 | assumption so types part of a SCC will be optimistically | |
3370 | treated equal unless proven otherwise. */ | |
3371 | return cstate->u.same_p; | |
d4398a43 RG |
3372 | } |
3373 | ||
3374 | /* Worker for gimple_types_compatible. | |
3375 | SCCSTACK, SCCSTATE and SCCSTATE_OBSTACK are state for the DFS walk done. */ | |
3376 | ||
3377 | static bool | |
b5e04de5 | 3378 | gimple_types_compatible_p_1 (tree t1, tree t2, type_pair_t p, |
d4398a43 RG |
3379 | VEC(type_pair_t, heap) **sccstack, |
3380 | struct pointer_map_t *sccstate, | |
3381 | struct obstack *sccstate_obstack) | |
3382 | { | |
d4398a43 RG |
3383 | struct sccs *state; |
3384 | ||
b5e04de5 | 3385 | gcc_assert (p->same_p[GTC_MERGE] == -2); |
d7f09764 | 3386 | |
d4398a43 RG |
3387 | state = XOBNEW (sccstate_obstack, struct sccs); |
3388 | *pointer_map_insert (sccstate, p) = state; | |
3389 | ||
3390 | VEC_safe_push (type_pair_t, heap, *sccstack, p); | |
3391 | state->dfsnum = gtc_next_dfs_num++; | |
3392 | state->low = state->dfsnum; | |
3393 | state->on_sccstack = true; | |
67701d1d RG |
3394 | /* Start with an equality assumption. As we DFS recurse into child |
3395 | SCCs this assumption may get revisited. */ | |
3396 | state->u.same_p = 1; | |
d7f09764 | 3397 | |
e1caba18 | 3398 | /* The struct tags shall compare equal. */ |
6a20ce76 | 3399 | if (!compare_type_names_p (t1, t2)) |
e1caba18 RG |
3400 | goto different_types; |
3401 | ||
ee7a54c5 RG |
3402 | /* We may not merge typedef types to the same type in different |
3403 | contexts. */ | |
3404 | if (TYPE_NAME (t1) | |
3405 | && TREE_CODE (TYPE_NAME (t1)) == TYPE_DECL | |
3406 | && DECL_CONTEXT (TYPE_NAME (t1)) | |
3407 | && TYPE_P (DECL_CONTEXT (TYPE_NAME (t1)))) | |
3408 | { | |
3409 | if (!gtc_visit (DECL_CONTEXT (TYPE_NAME (t1)), | |
3410 | DECL_CONTEXT (TYPE_NAME (t2)), | |
3411 | state, sccstack, sccstate, sccstate_obstack)) | |
3412 | goto different_types; | |
3413 | } | |
3414 | ||
59a6c9d5 L |
3415 | /* If their attributes are not the same they can't be the same type. */ |
3416 | if (!attribute_list_equal (TYPE_ATTRIBUTES (t1), TYPE_ATTRIBUTES (t2))) | |
3417 | goto different_types; | |
3418 | ||
d7f09764 DN |
3419 | /* Do type-specific comparisons. */ |
3420 | switch (TREE_CODE (t1)) | |
3421 | { | |
d4398a43 RG |
3422 | case VECTOR_TYPE: |
3423 | case COMPLEX_TYPE: | |
b5e04de5 | 3424 | if (!gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
d4398a43 RG |
3425 | state, sccstack, sccstate, sccstate_obstack)) |
3426 | goto different_types; | |
3427 | goto same_types; | |
3428 | ||
d7f09764 DN |
3429 | case ARRAY_TYPE: |
3430 | /* Array types are the same if the element types are the same and | |
3431 | the number of elements are the same. */ | |
b5e04de5 | 3432 | if (!gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
d4398a43 | 3433 | state, sccstack, sccstate, sccstate_obstack) |
b0cc341f RG |
3434 | || TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2) |
3435 | || TYPE_NONALIASED_COMPONENT (t1) != TYPE_NONALIASED_COMPONENT (t2)) | |
d7f09764 DN |
3436 | goto different_types; |
3437 | else | |
3438 | { | |
3439 | tree i1 = TYPE_DOMAIN (t1); | |
3440 | tree i2 = TYPE_DOMAIN (t2); | |
3441 | ||
3442 | /* For an incomplete external array, the type domain can be | |
3443 | NULL_TREE. Check this condition also. */ | |
3444 | if (i1 == NULL_TREE && i2 == NULL_TREE) | |
3445 | goto same_types; | |
3446 | else if (i1 == NULL_TREE || i2 == NULL_TREE) | |
3447 | goto different_types; | |
d7f09764 DN |
3448 | else |
3449 | { | |
3450 | tree min1 = TYPE_MIN_VALUE (i1); | |
3451 | tree min2 = TYPE_MIN_VALUE (i2); | |
3452 | tree max1 = TYPE_MAX_VALUE (i1); | |
3453 | tree max2 = TYPE_MAX_VALUE (i2); | |
3454 | ||
3455 | /* The minimum/maximum values have to be the same. */ | |
3456 | if ((min1 == min2 | |
f56000ed EB |
3457 | || (min1 && min2 |
3458 | && ((TREE_CODE (min1) == PLACEHOLDER_EXPR | |
3459 | && TREE_CODE (min2) == PLACEHOLDER_EXPR) | |
3460 | || operand_equal_p (min1, min2, 0)))) | |
d7f09764 | 3461 | && (max1 == max2 |
f56000ed EB |
3462 | || (max1 && max2 |
3463 | && ((TREE_CODE (max1) == PLACEHOLDER_EXPR | |
3464 | && TREE_CODE (max2) == PLACEHOLDER_EXPR) | |
3465 | || operand_equal_p (max1, max2, 0))))) | |
d7f09764 DN |
3466 | goto same_types; |
3467 | else | |
3468 | goto different_types; | |
3469 | } | |
3470 | } | |
3471 | ||
3472 | case METHOD_TYPE: | |
3473 | /* Method types should belong to the same class. */ | |
d4398a43 | 3474 | if (!gtc_visit (TYPE_METHOD_BASETYPE (t1), TYPE_METHOD_BASETYPE (t2), |
b5e04de5 | 3475 | state, sccstack, sccstate, sccstate_obstack)) |
d7f09764 DN |
3476 | goto different_types; |
3477 | ||
3478 | /* Fallthru */ | |
3479 | ||
3480 | case FUNCTION_TYPE: | |
3481 | /* Function types are the same if the return type and arguments types | |
3482 | are the same. */ | |
b5e04de5 RG |
3483 | if (!gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
3484 | state, sccstack, sccstate, sccstate_obstack)) | |
bcee752e RG |
3485 | goto different_types; |
3486 | ||
ac9a30ae | 3487 | if (!comp_type_attributes (t1, t2)) |
d7f09764 | 3488 | goto different_types; |
bcee752e RG |
3489 | |
3490 | if (TYPE_ARG_TYPES (t1) == TYPE_ARG_TYPES (t2)) | |
3491 | goto same_types; | |
d7f09764 DN |
3492 | else |
3493 | { | |
bcee752e | 3494 | tree parms1, parms2; |
d7f09764 | 3495 | |
bcee752e RG |
3496 | for (parms1 = TYPE_ARG_TYPES (t1), parms2 = TYPE_ARG_TYPES (t2); |
3497 | parms1 && parms2; | |
3498 | parms1 = TREE_CHAIN (parms1), parms2 = TREE_CHAIN (parms2)) | |
d7f09764 | 3499 | { |
b5e04de5 RG |
3500 | if (!gtc_visit (TREE_VALUE (parms1), TREE_VALUE (parms2), |
3501 | state, sccstack, sccstate, sccstate_obstack)) | |
d7f09764 | 3502 | goto different_types; |
d7f09764 | 3503 | } |
bcee752e RG |
3504 | |
3505 | if (parms1 || parms2) | |
3506 | goto different_types; | |
3507 | ||
3508 | goto same_types; | |
d7f09764 DN |
3509 | } |
3510 | ||
b23dc2c0 RG |
3511 | case OFFSET_TYPE: |
3512 | { | |
b5e04de5 | 3513 | if (!gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
d4398a43 RG |
3514 | state, sccstack, sccstate, sccstate_obstack) |
3515 | || !gtc_visit (TYPE_OFFSET_BASETYPE (t1), | |
b5e04de5 | 3516 | TYPE_OFFSET_BASETYPE (t2), |
d4398a43 | 3517 | state, sccstack, sccstate, sccstate_obstack)) |
b23dc2c0 RG |
3518 | goto different_types; |
3519 | ||
3520 | goto same_types; | |
3521 | } | |
3522 | ||
d7f09764 DN |
3523 | case POINTER_TYPE: |
3524 | case REFERENCE_TYPE: | |
e575382e RG |
3525 | { |
3526 | /* If the two pointers have different ref-all attributes, | |
3527 | they can't be the same type. */ | |
3528 | if (TYPE_REF_CAN_ALIAS_ALL (t1) != TYPE_REF_CAN_ALIAS_ALL (t2)) | |
3529 | goto different_types; | |
d7f09764 | 3530 | |
e575382e RG |
3531 | /* Otherwise, pointer and reference types are the same if the |
3532 | pointed-to types are the same. */ | |
b5e04de5 | 3533 | if (gtc_visit (TREE_TYPE (t1), TREE_TYPE (t2), |
d4398a43 | 3534 | state, sccstack, sccstate, sccstate_obstack)) |
e575382e RG |
3535 | goto same_types; |
3536 | ||
3537 | goto different_types; | |
3538 | } | |
d7f09764 | 3539 | |
b0cc341f RG |
3540 | case INTEGER_TYPE: |
3541 | case BOOLEAN_TYPE: | |
3542 | { | |
3543 | tree min1 = TYPE_MIN_VALUE (t1); | |
3544 | tree max1 = TYPE_MAX_VALUE (t1); | |
3545 | tree min2 = TYPE_MIN_VALUE (t2); | |
3546 | tree max2 = TYPE_MAX_VALUE (t2); | |
3547 | bool min_equal_p = false; | |
3548 | bool max_equal_p = false; | |
3549 | ||
3550 | /* If either type has a minimum value, the other type must | |
3551 | have the same. */ | |
3552 | if (min1 == NULL_TREE && min2 == NULL_TREE) | |
3553 | min_equal_p = true; | |
3554 | else if (min1 && min2 && operand_equal_p (min1, min2, 0)) | |
3555 | min_equal_p = true; | |
3556 | ||
3557 | /* Likewise, if either type has a maximum value, the other | |
3558 | type must have the same. */ | |
3559 | if (max1 == NULL_TREE && max2 == NULL_TREE) | |
3560 | max_equal_p = true; | |
3561 | else if (max1 && max2 && operand_equal_p (max1, max2, 0)) | |
3562 | max_equal_p = true; | |
3563 | ||
3564 | if (!min_equal_p || !max_equal_p) | |
3565 | goto different_types; | |
3566 | ||
3567 | goto same_types; | |
3568 | } | |
3569 | ||
d7f09764 | 3570 | case ENUMERAL_TYPE: |
e575382e | 3571 | { |
b0cc341f RG |
3572 | /* FIXME lto, we cannot check bounds on enumeral types because |
3573 | different front ends will produce different values. | |
3574 | In C, enumeral types are integers, while in C++ each element | |
3575 | will have its own symbolic value. We should decide how enums | |
3576 | are to be represented in GIMPLE and have each front end lower | |
3577 | to that. */ | |
e575382e | 3578 | tree v1, v2; |
d7f09764 | 3579 | |
b0cc341f | 3580 | /* For enumeral types, all the values must be the same. */ |
e575382e RG |
3581 | if (TYPE_VALUES (t1) == TYPE_VALUES (t2)) |
3582 | goto same_types; | |
d7f09764 | 3583 | |
e575382e RG |
3584 | for (v1 = TYPE_VALUES (t1), v2 = TYPE_VALUES (t2); |
3585 | v1 && v2; | |
3586 | v1 = TREE_CHAIN (v1), v2 = TREE_CHAIN (v2)) | |
3587 | { | |
3588 | tree c1 = TREE_VALUE (v1); | |
3589 | tree c2 = TREE_VALUE (v2); | |
d7f09764 | 3590 | |
e575382e RG |
3591 | if (TREE_CODE (c1) == CONST_DECL) |
3592 | c1 = DECL_INITIAL (c1); | |
d7f09764 | 3593 | |
e575382e RG |
3594 | if (TREE_CODE (c2) == CONST_DECL) |
3595 | c2 = DECL_INITIAL (c2); | |
d7f09764 | 3596 | |
e575382e RG |
3597 | if (tree_int_cst_equal (c1, c2) != 1) |
3598 | goto different_types; | |
abe36b81 | 3599 | |
b5e04de5 | 3600 | if (TREE_PURPOSE (v1) != TREE_PURPOSE (v2)) |
abe36b81 | 3601 | goto different_types; |
e575382e | 3602 | } |
d7f09764 | 3603 | |
e575382e RG |
3604 | /* If one enumeration has more values than the other, they |
3605 | are not the same. */ | |
3606 | if (v1 || v2) | |
3607 | goto different_types; | |
d7f09764 | 3608 | |
e575382e RG |
3609 | goto same_types; |
3610 | } | |
d7f09764 DN |
3611 | |
3612 | case RECORD_TYPE: | |
3613 | case UNION_TYPE: | |
3614 | case QUAL_UNION_TYPE: | |
e575382e RG |
3615 | { |
3616 | tree f1, f2; | |
d7f09764 | 3617 | |
e575382e RG |
3618 | /* For aggregate types, all the fields must be the same. */ |
3619 | for (f1 = TYPE_FIELDS (t1), f2 = TYPE_FIELDS (t2); | |
3620 | f1 && f2; | |
3621 | f1 = TREE_CHAIN (f1), f2 = TREE_CHAIN (f2)) | |
3622 | { | |
17e99cdb RG |
3623 | /* Different field kinds are not compatible. */ |
3624 | if (TREE_CODE (f1) != TREE_CODE (f2)) | |
3625 | goto different_types; | |
3626 | /* Field decls must have the same name and offset. */ | |
3627 | if (TREE_CODE (f1) == FIELD_DECL | |
3628 | && (DECL_NONADDRESSABLE_P (f1) != DECL_NONADDRESSABLE_P (f2) | |
3629 | || !gimple_compare_field_offset (f1, f2))) | |
3630 | goto different_types; | |
3631 | /* All entities should have the same name and type. */ | |
b5e04de5 | 3632 | if (DECL_NAME (f1) != DECL_NAME (f2) |
b5e04de5 | 3633 | || !gtc_visit (TREE_TYPE (f1), TREE_TYPE (f2), |
d4398a43 | 3634 | state, sccstack, sccstate, sccstate_obstack)) |
e575382e RG |
3635 | goto different_types; |
3636 | } | |
d7f09764 | 3637 | |
e575382e RG |
3638 | /* If one aggregate has more fields than the other, they |
3639 | are not the same. */ | |
3640 | if (f1 || f2) | |
3641 | goto different_types; | |
d7f09764 | 3642 | |
e575382e RG |
3643 | goto same_types; |
3644 | } | |
d7f09764 | 3645 | |
d7f09764 | 3646 | default: |
b0cc341f | 3647 | gcc_unreachable (); |
d7f09764 DN |
3648 | } |
3649 | ||
3650 | /* Common exit path for types that are not compatible. */ | |
3651 | different_types: | |
d4398a43 RG |
3652 | state->u.same_p = 0; |
3653 | goto pop; | |
d7f09764 DN |
3654 | |
3655 | /* Common exit path for types that are compatible. */ | |
3656 | same_types: | |
67701d1d | 3657 | gcc_assert (state->u.same_p == 1); |
d7f09764 | 3658 | |
d4398a43 RG |
3659 | pop: |
3660 | if (state->low == state->dfsnum) | |
3661 | { | |
3662 | type_pair_t x; | |
d7f09764 | 3663 | |
67701d1d RG |
3664 | /* Pop off the SCC and set its cache values to the final |
3665 | comparison result. */ | |
d4398a43 RG |
3666 | do |
3667 | { | |
3668 | struct sccs *cstate; | |
3669 | x = VEC_pop (type_pair_t, *sccstack); | |
3670 | cstate = (struct sccs *)*pointer_map_contains (sccstate, x); | |
3671 | cstate->on_sccstack = false; | |
b5e04de5 | 3672 | x->same_p[GTC_MERGE] = state->u.same_p; |
d4398a43 RG |
3673 | } |
3674 | while (x != p); | |
3675 | } | |
d7f09764 | 3676 | |
d4398a43 RG |
3677 | return state->u.same_p; |
3678 | } | |
d7f09764 | 3679 | |
d4398a43 RG |
3680 | /* Return true iff T1 and T2 are structurally identical. When |
3681 | FOR_MERGING_P is true the an incomplete type and a complete type | |
3682 | are considered different, otherwise they are considered compatible. */ | |
d7f09764 | 3683 | |
0ca8de87 | 3684 | static bool |
b5e04de5 | 3685 | gimple_types_compatible_p (tree t1, tree t2) |
d7f09764 | 3686 | { |
d4398a43 RG |
3687 | VEC(type_pair_t, heap) *sccstack = NULL; |
3688 | struct pointer_map_t *sccstate; | |
3689 | struct obstack sccstate_obstack; | |
3690 | type_pair_t p = NULL; | |
3691 | bool res; | |
b5e04de5 | 3692 | tree leader1, leader2; |
d4398a43 RG |
3693 | |
3694 | /* Before starting to set up the SCC machinery handle simple cases. */ | |
3695 | ||
3696 | /* Check first for the obvious case of pointer identity. */ | |
3697 | if (t1 == t2) | |
3698 | return true; | |
3699 | ||
3700 | /* Check that we have two types to compare. */ | |
3701 | if (t1 == NULL_TREE || t2 == NULL_TREE) | |
3702 | return false; | |
3703 | ||
d4398a43 RG |
3704 | /* Can't be the same type if the types don't have the same code. */ |
3705 | if (TREE_CODE (t1) != TREE_CODE (t2)) | |
3706 | return false; | |
3707 | ||
3708 | /* Can't be the same type if they have different CV qualifiers. */ | |
3709 | if (TYPE_QUALS (t1) != TYPE_QUALS (t2)) | |
3710 | return false; | |
3711 | ||
61332f77 RG |
3712 | if (TREE_ADDRESSABLE (t1) != TREE_ADDRESSABLE (t2)) |
3713 | return false; | |
3714 | ||
3715 | /* Void types and nullptr types are always the same. */ | |
3716 | if (TREE_CODE (t1) == VOID_TYPE | |
3717 | || TREE_CODE (t1) == NULLPTR_TYPE) | |
d4398a43 RG |
3718 | return true; |
3719 | ||
61332f77 RG |
3720 | /* Can't be the same type if they have different alignment or mode. */ |
3721 | if (TYPE_ALIGN (t1) != TYPE_ALIGN (t2) | |
3722 | || TYPE_MODE (t1) != TYPE_MODE (t2)) | |
3723 | return false; | |
3724 | ||
d4398a43 RG |
3725 | /* Do some simple checks before doing three hashtable queries. */ |
3726 | if (INTEGRAL_TYPE_P (t1) | |
3727 | || SCALAR_FLOAT_TYPE_P (t1) | |
3728 | || FIXED_POINT_TYPE_P (t1) | |
3729 | || TREE_CODE (t1) == VECTOR_TYPE | |
3730 | || TREE_CODE (t1) == COMPLEX_TYPE | |
61332f77 RG |
3731 | || TREE_CODE (t1) == OFFSET_TYPE |
3732 | || POINTER_TYPE_P (t1)) | |
d4398a43 | 3733 | { |
61332f77 RG |
3734 | /* Can't be the same type if they have different sign or precision. */ |
3735 | if (TYPE_PRECISION (t1) != TYPE_PRECISION (t2) | |
d4398a43 RG |
3736 | || TYPE_UNSIGNED (t1) != TYPE_UNSIGNED (t2)) |
3737 | return false; | |
3738 | ||
3739 | if (TREE_CODE (t1) == INTEGER_TYPE | |
3ac8781c | 3740 | && TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2)) |
d4398a43 RG |
3741 | return false; |
3742 | ||
3743 | /* That's all we need to check for float and fixed-point types. */ | |
3744 | if (SCALAR_FLOAT_TYPE_P (t1) | |
3745 | || FIXED_POINT_TYPE_P (t1)) | |
3746 | return true; | |
3747 | ||
073a8998 | 3748 | /* For other types fall through to more complex checks. */ |
d4398a43 RG |
3749 | } |
3750 | ||
61332f77 RG |
3751 | /* If the types have been previously registered and found equal |
3752 | they still are. */ | |
3753 | leader1 = gimple_lookup_type_leader (t1); | |
3754 | leader2 = gimple_lookup_type_leader (t2); | |
3755 | if (leader1 == t2 | |
3756 | || t1 == leader2 | |
3757 | || (leader1 && leader1 == leader2)) | |
3758 | return true; | |
d4398a43 RG |
3759 | |
3760 | /* If the hash values of t1 and t2 are different the types can't | |
3761 | possibly be the same. This helps keeping the type-pair hashtable | |
3762 | small, only tracking comparisons for hash collisions. */ | |
b5e04de5 | 3763 | if (gimple_type_hash (t1) != gimple_type_hash (t2)) |
d4398a43 RG |
3764 | return false; |
3765 | ||
3766 | /* If we've visited this type pair before (in the case of aggregates | |
3767 | with self-referential types), and we made a decision, return it. */ | |
a30726a4 | 3768 | p = lookup_type_pair (t1, t2); |
b5e04de5 | 3769 | if (p->same_p[GTC_MERGE] == 0 || p->same_p[GTC_MERGE] == 1) |
d4398a43 RG |
3770 | { |
3771 | /* We have already decided whether T1 and T2 are the | |
3772 | same, return the cached result. */ | |
b5e04de5 | 3773 | return p->same_p[GTC_MERGE] == 1; |
d4398a43 RG |
3774 | } |
3775 | ||
3776 | /* Now set up the SCC machinery for the comparison. */ | |
3777 | gtc_next_dfs_num = 1; | |
3778 | sccstate = pointer_map_create (); | |
3779 | gcc_obstack_init (&sccstate_obstack); | |
b5e04de5 | 3780 | res = gimple_types_compatible_p_1 (t1, t2, p, |
d4398a43 RG |
3781 | &sccstack, sccstate, &sccstate_obstack); |
3782 | VEC_free (type_pair_t, heap, sccstack); | |
3783 | pointer_map_destroy (sccstate); | |
3784 | obstack_free (&sccstate_obstack, NULL); | |
3785 | ||
3786 | return res; | |
3787 | } | |
d7f09764 | 3788 | |
d7f09764 DN |
3789 | |
3790 | static hashval_t | |
3791 | iterative_hash_gimple_type (tree, hashval_t, VEC(tree, heap) **, | |
b5e04de5 | 3792 | struct pointer_map_t *, struct obstack *); |
d7f09764 DN |
3793 | |
3794 | /* DFS visit the edge from the callers type with state *STATE to T. | |
3795 | Update the callers type hash V with the hash for T if it is not part | |
3796 | of the SCC containing the callers type and return it. | |
3797 | SCCSTACK, SCCSTATE and SCCSTATE_OBSTACK are state for the DFS walk done. */ | |
3798 | ||
3799 | static hashval_t | |
3800 | visit (tree t, struct sccs *state, hashval_t v, | |
3801 | VEC (tree, heap) **sccstack, | |
3802 | struct pointer_map_t *sccstate, | |
b5e04de5 | 3803 | struct obstack *sccstate_obstack) |
d7f09764 DN |
3804 | { |
3805 | struct sccs *cstate = NULL; | |
0f443ad0 | 3806 | struct tree_int_map m; |
d7f09764 DN |
3807 | void **slot; |
3808 | ||
3809 | /* If there is a hash value recorded for this type then it can't | |
3810 | possibly be part of our parent SCC. Simply mix in its hash. */ | |
0f443ad0 | 3811 | m.base.from = t; |
b5e04de5 | 3812 | if ((slot = htab_find_slot (type_hash_cache, &m, NO_INSERT)) |
0f443ad0 RG |
3813 | && *slot) |
3814 | return iterative_hash_hashval_t (((struct tree_int_map *) *slot)->to, v); | |
d7f09764 DN |
3815 | |
3816 | if ((slot = pointer_map_contains (sccstate, t)) != NULL) | |
3817 | cstate = (struct sccs *)*slot; | |
3818 | if (!cstate) | |
3819 | { | |
3820 | hashval_t tem; | |
3821 | /* Not yet visited. DFS recurse. */ | |
3822 | tem = iterative_hash_gimple_type (t, v, | |
b5e04de5 | 3823 | sccstack, sccstate, sccstate_obstack); |
d7f09764 DN |
3824 | if (!cstate) |
3825 | cstate = (struct sccs *)* pointer_map_contains (sccstate, t); | |
3826 | state->low = MIN (state->low, cstate->low); | |
3827 | /* If the type is no longer on the SCC stack and thus is not part | |
3828 | of the parents SCC mix in its hash value. Otherwise we will | |
3829 | ignore the type for hashing purposes and return the unaltered | |
3830 | hash value. */ | |
3831 | if (!cstate->on_sccstack) | |
3832 | return tem; | |
3833 | } | |
3834 | if (cstate->dfsnum < state->dfsnum | |
3835 | && cstate->on_sccstack) | |
3836 | state->low = MIN (cstate->dfsnum, state->low); | |
3837 | ||
3838 | /* We are part of our parents SCC, skip this type during hashing | |
3839 | and return the unaltered hash value. */ | |
3840 | return v; | |
3841 | } | |
3842 | ||
77785f4f | 3843 | /* Hash NAME with the previous hash value V and return it. */ |
d7f09764 DN |
3844 | |
3845 | static hashval_t | |
77785f4f | 3846 | iterative_hash_name (tree name, hashval_t v) |
d7f09764 | 3847 | { |
d7f09764 DN |
3848 | if (!name) |
3849 | return v; | |
ee7a54c5 | 3850 | v = iterative_hash_hashval_t (TREE_CODE (name), v); |
d7f09764 DN |
3851 | if (TREE_CODE (name) == TYPE_DECL) |
3852 | name = DECL_NAME (name); | |
3853 | if (!name) | |
3854 | return v; | |
3855 | gcc_assert (TREE_CODE (name) == IDENTIFIER_NODE); | |
d7f09764 DN |
3856 | return iterative_hash_object (IDENTIFIER_HASH_VALUE (name), v); |
3857 | } | |
3858 | ||
3066f593 RG |
3859 | /* A type, hashvalue pair for sorting SCC members. */ |
3860 | ||
3861 | struct type_hash_pair { | |
3862 | tree type; | |
3863 | hashval_t hash; | |
3864 | }; | |
3865 | ||
3866 | /* Compare two type, hashvalue pairs. */ | |
3867 | ||
3868 | static int | |
3869 | type_hash_pair_compare (const void *p1_, const void *p2_) | |
3870 | { | |
3871 | const struct type_hash_pair *p1 = (const struct type_hash_pair *) p1_; | |
3872 | const struct type_hash_pair *p2 = (const struct type_hash_pair *) p2_; | |
5beaf664 RG |
3873 | if (p1->hash < p2->hash) |
3874 | return -1; | |
3875 | else if (p1->hash > p2->hash) | |
3876 | return 1; | |
3877 | return 0; | |
3066f593 RG |
3878 | } |
3879 | ||
d7f09764 DN |
3880 | /* Returning a hash value for gimple type TYPE combined with VAL. |
3881 | SCCSTACK, SCCSTATE and SCCSTATE_OBSTACK are state for the DFS walk done. | |
3882 | ||
3883 | To hash a type we end up hashing in types that are reachable. | |
3884 | Through pointers we can end up with cycles which messes up the | |
3885 | required property that we need to compute the same hash value | |
3886 | for structurally equivalent types. To avoid this we have to | |
3887 | hash all types in a cycle (the SCC) in a commutative way. The | |
3888 | easiest way is to not mix in the hashes of the SCC members at | |
3889 | all. To make this work we have to delay setting the hash | |
3890 | values of the SCC until it is complete. */ | |
3891 | ||
3892 | static hashval_t | |
3893 | iterative_hash_gimple_type (tree type, hashval_t val, | |
3894 | VEC(tree, heap) **sccstack, | |
3895 | struct pointer_map_t *sccstate, | |
b5e04de5 | 3896 | struct obstack *sccstate_obstack) |
d7f09764 DN |
3897 | { |
3898 | hashval_t v; | |
3899 | void **slot; | |
3900 | struct sccs *state; | |
3901 | ||
0f443ad0 | 3902 | /* Not visited during this DFS walk. */ |
77a74ed7 | 3903 | gcc_checking_assert (!pointer_map_contains (sccstate, type)); |
d7f09764 DN |
3904 | state = XOBNEW (sccstate_obstack, struct sccs); |
3905 | *pointer_map_insert (sccstate, type) = state; | |
3906 | ||
3907 | VEC_safe_push (tree, heap, *sccstack, type); | |
3908 | state->dfsnum = next_dfs_num++; | |
3909 | state->low = state->dfsnum; | |
3910 | state->on_sccstack = true; | |
3911 | ||
3912 | /* Combine a few common features of types so that types are grouped into | |
3913 | smaller sets; when searching for existing matching types to merge, | |
3914 | only existing types having the same features as the new type will be | |
3915 | checked. */ | |
e1caba18 | 3916 | v = iterative_hash_name (TYPE_NAME (type), 0); |
ee7a54c5 RG |
3917 | if (TYPE_NAME (type) |
3918 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
3919 | && DECL_CONTEXT (TYPE_NAME (type)) | |
3920 | && TYPE_P (DECL_CONTEXT (TYPE_NAME (type)))) | |
3921 | v = visit (DECL_CONTEXT (TYPE_NAME (type)), state, v, | |
3922 | sccstack, sccstate, sccstate_obstack); | |
e1caba18 | 3923 | v = iterative_hash_hashval_t (TREE_CODE (type), v); |
d7f09764 DN |
3924 | v = iterative_hash_hashval_t (TYPE_QUALS (type), v); |
3925 | v = iterative_hash_hashval_t (TREE_ADDRESSABLE (type), v); | |
3926 | ||
3927 | /* Do not hash the types size as this will cause differences in | |
3928 | hash values for the complete vs. the incomplete type variant. */ | |
3929 | ||
3930 | /* Incorporate common features of numerical types. */ | |
3931 | if (INTEGRAL_TYPE_P (type) | |
3932 | || SCALAR_FLOAT_TYPE_P (type) | |
3933 | || FIXED_POINT_TYPE_P (type)) | |
3934 | { | |
3935 | v = iterative_hash_hashval_t (TYPE_PRECISION (type), v); | |
3936 | v = iterative_hash_hashval_t (TYPE_MODE (type), v); | |
3937 | v = iterative_hash_hashval_t (TYPE_UNSIGNED (type), v); | |
3938 | } | |
3939 | ||
3940 | /* For pointer and reference types, fold in information about the type | |
1e83b5f1 | 3941 | pointed to. */ |
d7f09764 | 3942 | if (POINTER_TYPE_P (type)) |
1e83b5f1 RG |
3943 | v = visit (TREE_TYPE (type), state, v, |
3944 | sccstack, sccstate, sccstate_obstack); | |
d7f09764 | 3945 | |
f798226d RG |
3946 | /* For integer types hash the types min/max values and the string flag. */ |
3947 | if (TREE_CODE (type) == INTEGER_TYPE) | |
3948 | { | |
429c98c9 RG |
3949 | /* OMP lowering can introduce error_mark_node in place of |
3950 | random local decls in types. */ | |
3951 | if (TYPE_MIN_VALUE (type) != error_mark_node) | |
3952 | v = iterative_hash_expr (TYPE_MIN_VALUE (type), v); | |
3953 | if (TYPE_MAX_VALUE (type) != error_mark_node) | |
3954 | v = iterative_hash_expr (TYPE_MAX_VALUE (type), v); | |
f798226d RG |
3955 | v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v); |
3956 | } | |
3957 | ||
2e745103 EB |
3958 | /* For array types hash the domain and the string flag. */ |
3959 | if (TREE_CODE (type) == ARRAY_TYPE && TYPE_DOMAIN (type)) | |
f798226d RG |
3960 | { |
3961 | v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v); | |
3962 | v = visit (TYPE_DOMAIN (type), state, v, | |
b5e04de5 | 3963 | sccstack, sccstate, sccstate_obstack); |
f798226d RG |
3964 | } |
3965 | ||
3966 | /* Recurse for aggregates with a single element type. */ | |
d7f09764 DN |
3967 | if (TREE_CODE (type) == ARRAY_TYPE |
3968 | || TREE_CODE (type) == COMPLEX_TYPE | |
3969 | || TREE_CODE (type) == VECTOR_TYPE) | |
3970 | v = visit (TREE_TYPE (type), state, v, | |
b5e04de5 | 3971 | sccstack, sccstate, sccstate_obstack); |
d7f09764 DN |
3972 | |
3973 | /* Incorporate function return and argument types. */ | |
3974 | if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE) | |
3975 | { | |
3976 | unsigned na; | |
3977 | tree p; | |
3978 | ||
3979 | /* For method types also incorporate their parent class. */ | |
3980 | if (TREE_CODE (type) == METHOD_TYPE) | |
3981 | v = visit (TYPE_METHOD_BASETYPE (type), state, v, | |
b5e04de5 | 3982 | sccstack, sccstate, sccstate_obstack); |
d7f09764 | 3983 | |
1e83b5f1 RG |
3984 | /* Check result and argument types. */ |
3985 | v = visit (TREE_TYPE (type), state, v, | |
3986 | sccstack, sccstate, sccstate_obstack); | |
d7f09764 DN |
3987 | for (p = TYPE_ARG_TYPES (type), na = 0; p; p = TREE_CHAIN (p)) |
3988 | { | |
1e83b5f1 RG |
3989 | v = visit (TREE_VALUE (p), state, v, |
3990 | sccstack, sccstate, sccstate_obstack); | |
d7f09764 DN |
3991 | na++; |
3992 | } | |
3993 | ||
3994 | v = iterative_hash_hashval_t (na, v); | |
3995 | } | |
3996 | ||
aa47290b | 3997 | if (RECORD_OR_UNION_TYPE_P (type)) |
d7f09764 DN |
3998 | { |
3999 | unsigned nf; | |
4000 | tree f; | |
4001 | ||
d7f09764 DN |
4002 | for (f = TYPE_FIELDS (type), nf = 0; f; f = TREE_CHAIN (f)) |
4003 | { | |
b5e04de5 | 4004 | v = iterative_hash_name (DECL_NAME (f), v); |
d7f09764 | 4005 | v = visit (TREE_TYPE (f), state, v, |
b5e04de5 | 4006 | sccstack, sccstate, sccstate_obstack); |
d7f09764 DN |
4007 | nf++; |
4008 | } | |
4009 | ||
4010 | v = iterative_hash_hashval_t (nf, v); | |
4011 | } | |
4012 | ||
4013 | /* Record hash for us. */ | |
d4398a43 | 4014 | state->u.hash = v; |
d7f09764 DN |
4015 | |
4016 | /* See if we found an SCC. */ | |
4017 | if (state->low == state->dfsnum) | |
4018 | { | |
4019 | tree x; | |
3066f593 | 4020 | struct tree_int_map *m; |
d7f09764 DN |
4021 | |
4022 | /* Pop off the SCC and set its hash values. */ | |
3066f593 | 4023 | x = VEC_pop (tree, *sccstack); |
3066f593 RG |
4024 | /* Optimize SCC size one. */ |
4025 | if (x == type) | |
d7f09764 | 4026 | { |
008bad7a | 4027 | state->on_sccstack = false; |
3066f593 | 4028 | m = ggc_alloc_cleared_tree_int_map (); |
0f443ad0 | 4029 | m->base.from = x; |
008bad7a | 4030 | m->to = v; |
b5e04de5 | 4031 | slot = htab_find_slot (type_hash_cache, m, INSERT); |
0f443ad0 RG |
4032 | gcc_assert (!*slot); |
4033 | *slot = (void *) m; | |
d7f09764 | 4034 | } |
3066f593 RG |
4035 | else |
4036 | { | |
008bad7a | 4037 | struct sccs *cstate; |
3066f593 RG |
4038 | unsigned first, i, size, j; |
4039 | struct type_hash_pair *pairs; | |
4040 | /* Pop off the SCC and build an array of type, hash pairs. */ | |
4041 | first = VEC_length (tree, *sccstack) - 1; | |
4042 | while (VEC_index (tree, *sccstack, first) != type) | |
4043 | --first; | |
4044 | size = VEC_length (tree, *sccstack) - first + 1; | |
4045 | pairs = XALLOCAVEC (struct type_hash_pair, size); | |
4046 | i = 0; | |
008bad7a RG |
4047 | cstate = (struct sccs *)*pointer_map_contains (sccstate, x); |
4048 | cstate->on_sccstack = false; | |
3066f593 RG |
4049 | pairs[i].type = x; |
4050 | pairs[i].hash = cstate->u.hash; | |
4051 | do | |
4052 | { | |
4053 | x = VEC_pop (tree, *sccstack); | |
4054 | cstate = (struct sccs *)*pointer_map_contains (sccstate, x); | |
4055 | cstate->on_sccstack = false; | |
4056 | ++i; | |
4057 | pairs[i].type = x; | |
4058 | pairs[i].hash = cstate->u.hash; | |
4059 | } | |
4060 | while (x != type); | |
4061 | gcc_assert (i + 1 == size); | |
4062 | /* Sort the arrays of type, hash pairs so that when we mix in | |
4063 | all members of the SCC the hash value becomes independent on | |
4064 | the order we visited the SCC. Disregard hashes equal to | |
4065 | the hash of the type we mix into because we cannot guarantee | |
4066 | a stable sort for those across different TUs. */ | |
4067 | qsort (pairs, size, sizeof (struct type_hash_pair), | |
4068 | type_hash_pair_compare); | |
4069 | for (i = 0; i < size; ++i) | |
4070 | { | |
4071 | hashval_t hash; | |
4072 | m = ggc_alloc_cleared_tree_int_map (); | |
4073 | m->base.from = pairs[i].type; | |
4074 | hash = pairs[i].hash; | |
4075 | /* Skip same hashes. */ | |
4076 | for (j = i + 1; j < size && pairs[j].hash == pairs[i].hash; ++j) | |
4077 | ; | |
4078 | for (; j < size; ++j) | |
4079 | hash = iterative_hash_hashval_t (pairs[j].hash, hash); | |
4080 | for (j = 0; pairs[j].hash != pairs[i].hash; ++j) | |
4081 | hash = iterative_hash_hashval_t (pairs[j].hash, hash); | |
4082 | m->to = hash; | |
008bad7a RG |
4083 | if (pairs[i].type == type) |
4084 | v = hash; | |
3066f593 RG |
4085 | slot = htab_find_slot (type_hash_cache, m, INSERT); |
4086 | gcc_assert (!*slot); | |
4087 | *slot = (void *) m; | |
4088 | } | |
4089 | } | |
d7f09764 DN |
4090 | } |
4091 | ||
4092 | return iterative_hash_hashval_t (v, val); | |
4093 | } | |
4094 | ||
4095 | ||
4096 | /* Returns a hash value for P (assumed to be a type). The hash value | |
4097 | is computed using some distinguishing features of the type. Note | |
4098 | that we cannot use pointer hashing here as we may be dealing with | |
4099 | two distinct instances of the same type. | |
4100 | ||
4101 | This function should produce the same hash value for two compatible | |
4102 | types according to gimple_types_compatible_p. */ | |
4103 | ||
4104 | static hashval_t | |
b5e04de5 | 4105 | gimple_type_hash (const void *p) |
d7f09764 | 4106 | { |
ddd4d0e1 | 4107 | const_tree t = (const_tree) p; |
d7f09764 DN |
4108 | VEC(tree, heap) *sccstack = NULL; |
4109 | struct pointer_map_t *sccstate; | |
4110 | struct obstack sccstate_obstack; | |
4111 | hashval_t val; | |
4112 | void **slot; | |
0f443ad0 | 4113 | struct tree_int_map m; |
d7f09764 | 4114 | |
b5e04de5 | 4115 | if (type_hash_cache == NULL) |
0f443ad0 RG |
4116 | type_hash_cache = htab_create_ggc (512, tree_int_map_hash, |
4117 | tree_int_map_eq, NULL); | |
d7f09764 | 4118 | |
0f443ad0 | 4119 | m.base.from = CONST_CAST_TREE (t); |
b5e04de5 | 4120 | if ((slot = htab_find_slot (type_hash_cache, &m, NO_INSERT)) |
0f443ad0 RG |
4121 | && *slot) |
4122 | return iterative_hash_hashval_t (((struct tree_int_map *) *slot)->to, 0); | |
d7f09764 DN |
4123 | |
4124 | /* Perform a DFS walk and pre-hash all reachable types. */ | |
4125 | next_dfs_num = 1; | |
4126 | sccstate = pointer_map_create (); | |
4127 | gcc_obstack_init (&sccstate_obstack); | |
ddd4d0e1 | 4128 | val = iterative_hash_gimple_type (CONST_CAST_TREE (t), 0, |
b5e04de5 | 4129 | &sccstack, sccstate, &sccstate_obstack); |
d7f09764 DN |
4130 | VEC_free (tree, heap, sccstack); |
4131 | pointer_map_destroy (sccstate); | |
4132 | obstack_free (&sccstate_obstack, NULL); | |
4133 | ||
4134 | return val; | |
4135 | } | |
4136 | ||
825b27de RG |
4137 | /* Returning a hash value for gimple type TYPE combined with VAL. |
4138 | ||
4139 | The hash value returned is equal for types considered compatible | |
4140 | by gimple_canonical_types_compatible_p. */ | |
4141 | ||
4142 | static hashval_t | |
4143 | iterative_hash_canonical_type (tree type, hashval_t val) | |
4144 | { | |
4145 | hashval_t v; | |
4146 | void **slot; | |
4147 | struct tree_int_map *mp, m; | |
4148 | ||
4149 | m.base.from = type; | |
4150 | if ((slot = htab_find_slot (canonical_type_hash_cache, &m, INSERT)) | |
4151 | && *slot) | |
d0340959 | 4152 | return iterative_hash_hashval_t (((struct tree_int_map *) *slot)->to, val); |
825b27de RG |
4153 | |
4154 | /* Combine a few common features of types so that types are grouped into | |
4155 | smaller sets; when searching for existing matching types to merge, | |
4156 | only existing types having the same features as the new type will be | |
4157 | checked. */ | |
4158 | v = iterative_hash_hashval_t (TREE_CODE (type), 0); | |
825b27de | 4159 | v = iterative_hash_hashval_t (TREE_ADDRESSABLE (type), v); |
61332f77 RG |
4160 | v = iterative_hash_hashval_t (TYPE_ALIGN (type), v); |
4161 | v = iterative_hash_hashval_t (TYPE_MODE (type), v); | |
825b27de RG |
4162 | |
4163 | /* Incorporate common features of numerical types. */ | |
4164 | if (INTEGRAL_TYPE_P (type) | |
4165 | || SCALAR_FLOAT_TYPE_P (type) | |
61332f77 RG |
4166 | || FIXED_POINT_TYPE_P (type) |
4167 | || TREE_CODE (type) == VECTOR_TYPE | |
4168 | || TREE_CODE (type) == COMPLEX_TYPE | |
4169 | || TREE_CODE (type) == OFFSET_TYPE | |
4170 | || POINTER_TYPE_P (type)) | |
825b27de RG |
4171 | { |
4172 | v = iterative_hash_hashval_t (TYPE_PRECISION (type), v); | |
825b27de RG |
4173 | v = iterative_hash_hashval_t (TYPE_UNSIGNED (type), v); |
4174 | } | |
4175 | ||
4176 | /* For pointer and reference types, fold in information about the type | |
4177 | pointed to but do not recurse to the pointed-to type. */ | |
4178 | if (POINTER_TYPE_P (type)) | |
4179 | { | |
4180 | v = iterative_hash_hashval_t (TYPE_REF_CAN_ALIAS_ALL (type), v); | |
61332f77 RG |
4181 | v = iterative_hash_hashval_t (TYPE_ADDR_SPACE (TREE_TYPE (type)), v); |
4182 | v = iterative_hash_hashval_t (TYPE_RESTRICT (type), v); | |
825b27de RG |
4183 | v = iterative_hash_hashval_t (TREE_CODE (TREE_TYPE (type)), v); |
4184 | } | |
4185 | ||
2e745103 | 4186 | /* For integer types hash only the string flag. */ |
825b27de | 4187 | if (TREE_CODE (type) == INTEGER_TYPE) |
3ac8781c | 4188 | v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v); |
825b27de | 4189 | |
2e745103 EB |
4190 | /* For array types hash the domain bounds and the string flag. */ |
4191 | if (TREE_CODE (type) == ARRAY_TYPE && TYPE_DOMAIN (type)) | |
825b27de RG |
4192 | { |
4193 | v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v); | |
2e745103 EB |
4194 | /* OMP lowering can introduce error_mark_node in place of |
4195 | random local decls in types. */ | |
4196 | if (TYPE_MIN_VALUE (TYPE_DOMAIN (type)) != error_mark_node) | |
4197 | v = iterative_hash_expr (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), v); | |
4198 | if (TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != error_mark_node) | |
4199 | v = iterative_hash_expr (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), v); | |
825b27de RG |
4200 | } |
4201 | ||
4202 | /* Recurse for aggregates with a single element type. */ | |
4203 | if (TREE_CODE (type) == ARRAY_TYPE | |
4204 | || TREE_CODE (type) == COMPLEX_TYPE | |
4205 | || TREE_CODE (type) == VECTOR_TYPE) | |
4206 | v = iterative_hash_canonical_type (TREE_TYPE (type), v); | |
4207 | ||
4208 | /* Incorporate function return and argument types. */ | |
4209 | if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE) | |
4210 | { | |
4211 | unsigned na; | |
4212 | tree p; | |
4213 | ||
4214 | /* For method types also incorporate their parent class. */ | |
4215 | if (TREE_CODE (type) == METHOD_TYPE) | |
4216 | v = iterative_hash_canonical_type (TYPE_METHOD_BASETYPE (type), v); | |
4217 | ||
6a20ce76 | 4218 | v = iterative_hash_canonical_type (TREE_TYPE (type), v); |
825b27de RG |
4219 | |
4220 | for (p = TYPE_ARG_TYPES (type), na = 0; p; p = TREE_CHAIN (p)) | |
4221 | { | |
6a20ce76 | 4222 | v = iterative_hash_canonical_type (TREE_VALUE (p), v); |
825b27de RG |
4223 | na++; |
4224 | } | |
4225 | ||
4226 | v = iterative_hash_hashval_t (na, v); | |
4227 | } | |
4228 | ||
aa47290b | 4229 | if (RECORD_OR_UNION_TYPE_P (type)) |
825b27de RG |
4230 | { |
4231 | unsigned nf; | |
4232 | tree f; | |
4233 | ||
4234 | for (f = TYPE_FIELDS (type), nf = 0; f; f = TREE_CHAIN (f)) | |
e7cfe241 RG |
4235 | if (TREE_CODE (f) == FIELD_DECL) |
4236 | { | |
4237 | v = iterative_hash_canonical_type (TREE_TYPE (f), v); | |
4238 | nf++; | |
4239 | } | |
825b27de RG |
4240 | |
4241 | v = iterative_hash_hashval_t (nf, v); | |
4242 | } | |
4243 | ||
4244 | /* Cache the just computed hash value. */ | |
4245 | mp = ggc_alloc_cleared_tree_int_map (); | |
4246 | mp->base.from = type; | |
4247 | mp->to = v; | |
4248 | *slot = (void *) mp; | |
4249 | ||
4250 | return iterative_hash_hashval_t (v, val); | |
4251 | } | |
4252 | ||
a844a60b RG |
4253 | static hashval_t |
4254 | gimple_canonical_type_hash (const void *p) | |
4255 | { | |
825b27de RG |
4256 | if (canonical_type_hash_cache == NULL) |
4257 | canonical_type_hash_cache = htab_create_ggc (512, tree_int_map_hash, | |
4258 | tree_int_map_eq, NULL); | |
4259 | ||
4260 | return iterative_hash_canonical_type (CONST_CAST_TREE ((const_tree) p), 0); | |
a844a60b RG |
4261 | } |
4262 | ||
d7f09764 DN |
4263 | |
4264 | /* Returns nonzero if P1 and P2 are equal. */ | |
4265 | ||
4266 | static int | |
4267 | gimple_type_eq (const void *p1, const void *p2) | |
4268 | { | |
4269 | const_tree t1 = (const_tree) p1; | |
4270 | const_tree t2 = (const_tree) p2; | |
f5d6836a | 4271 | return gimple_types_compatible_p (CONST_CAST_TREE (t1), |
b5e04de5 | 4272 | CONST_CAST_TREE (t2)); |
d7f09764 DN |
4273 | } |
4274 | ||
4275 | ||
93b2a207 RG |
4276 | /* Worker for gimple_register_type. |
4277 | Register type T in the global type table gimple_types. | |
4278 | When REGISTERING_MV is false first recurse for the main variant of T. */ | |
d7f09764 | 4279 | |
93b2a207 RG |
4280 | static tree |
4281 | gimple_register_type_1 (tree t, bool registering_mv) | |
d7f09764 DN |
4282 | { |
4283 | void **slot; | |
4490cae6 | 4284 | gimple_type_leader_entry *leader; |
d7f09764 | 4285 | |
4490cae6 RG |
4286 | /* If we registered this type before return the cached result. */ |
4287 | leader = &gimple_type_leader[TYPE_UID (t) % GIMPLE_TYPE_LEADER_SIZE]; | |
4288 | if (leader->type == t) | |
4289 | return leader->leader; | |
4a2ac96f | 4290 | |
20d36f0e RG |
4291 | /* Always register the main variant first. This is important so we |
4292 | pick up the non-typedef variants as canonical, otherwise we'll end | |
93b2a207 RG |
4293 | up taking typedef ids for structure tags during comparison. |
4294 | It also makes sure that main variants will be merged to main variants. | |
4295 | As we are operating on a possibly partially fixed up type graph | |
4296 | do not bother to recurse more than once, otherwise we may end up | |
31b3ca64 RG |
4297 | walking in circles. |
4298 | If we are registering a main variant it will either remain its | |
4299 | own main variant or it will be merged to something else in which | |
4300 | case we do not care for the main variant leader. */ | |
93b2a207 RG |
4301 | if (!registering_mv |
4302 | && TYPE_MAIN_VARIANT (t) != t) | |
fb291a1e | 4303 | gimple_register_type_1 (TYPE_MAIN_VARIANT (t), true); |
d7f09764 | 4304 | |
fb291a1e | 4305 | /* See if we already have an equivalent type registered. */ |
d7f09764 DN |
4306 | slot = htab_find_slot (gimple_types, t, INSERT); |
4307 | if (*slot | |
4308 | && *(tree *)slot != t) | |
4309 | { | |
4310 | tree new_type = (tree) *((tree *) slot); | |
4490cae6 RG |
4311 | leader->type = t; |
4312 | leader->leader = new_type; | |
fb291a1e | 4313 | return new_type; |
4490cae6 RG |
4314 | } |
4315 | ||
fb291a1e RG |
4316 | /* If not, insert it to the cache and the hash. */ |
4317 | leader->type = t; | |
4318 | leader->leader = t; | |
4319 | *slot = (void *) t; | |
4490cae6 RG |
4320 | return t; |
4321 | } | |
4322 | ||
93b2a207 RG |
4323 | /* Register type T in the global type table gimple_types. |
4324 | If another type T', compatible with T, already existed in | |
4325 | gimple_types then return T', otherwise return T. This is used by | |
4326 | LTO to merge identical types read from different TUs. */ | |
4327 | ||
4328 | tree | |
4329 | gimple_register_type (tree t) | |
4330 | { | |
4331 | gcc_assert (TYPE_P (t)); | |
4332 | ||
4333 | if (!gimple_type_leader) | |
4334 | gimple_type_leader = ggc_alloc_cleared_vec_gimple_type_leader_entry_s | |
4335 | (GIMPLE_TYPE_LEADER_SIZE); | |
4336 | ||
4337 | if (gimple_types == NULL) | |
4338 | gimple_types = htab_create_ggc (16381, gimple_type_hash, gimple_type_eq, 0); | |
4339 | ||
4340 | return gimple_register_type_1 (t, false); | |
4341 | } | |
4490cae6 | 4342 | |
825b27de RG |
4343 | /* The TYPE_CANONICAL merging machinery. It should closely resemble |
4344 | the middle-end types_compatible_p function. It needs to avoid | |
4345 | claiming types are different for types that should be treated | |
4346 | the same with respect to TBAA. Canonical types are also used | |
4347 | for IL consistency checks via the useless_type_conversion_p | |
4348 | predicate which does not handle all type kinds itself but falls | |
4349 | back to pointer-comparison of TYPE_CANONICAL for aggregates | |
4350 | for example. */ | |
4351 | ||
4352 | /* Return true iff T1 and T2 are structurally identical for what | |
4353 | TBAA is concerned. */ | |
4354 | ||
4355 | static bool | |
4356 | gimple_canonical_types_compatible_p (tree t1, tree t2) | |
4357 | { | |
825b27de RG |
4358 | /* Before starting to set up the SCC machinery handle simple cases. */ |
4359 | ||
4360 | /* Check first for the obvious case of pointer identity. */ | |
4361 | if (t1 == t2) | |
4362 | return true; | |
4363 | ||
4364 | /* Check that we have two types to compare. */ | |
4365 | if (t1 == NULL_TREE || t2 == NULL_TREE) | |
4366 | return false; | |
4367 | ||
4368 | /* If the types have been previously registered and found equal | |
4369 | they still are. */ | |
4370 | if (TYPE_CANONICAL (t1) | |
4371 | && TYPE_CANONICAL (t1) == TYPE_CANONICAL (t2)) | |
4372 | return true; | |
4373 | ||
4374 | /* Can't be the same type if the types don't have the same code. */ | |
4375 | if (TREE_CODE (t1) != TREE_CODE (t2)) | |
4376 | return false; | |
4377 | ||
61332f77 | 4378 | if (TREE_ADDRESSABLE (t1) != TREE_ADDRESSABLE (t2)) |
825b27de RG |
4379 | return false; |
4380 | ||
61332f77 RG |
4381 | /* Qualifiers do not matter for canonical type comparison purposes. */ |
4382 | ||
4383 | /* Void types and nullptr types are always the same. */ | |
4384 | if (TREE_CODE (t1) == VOID_TYPE | |
4385 | || TREE_CODE (t1) == NULLPTR_TYPE) | |
825b27de RG |
4386 | return true; |
4387 | ||
61332f77 RG |
4388 | /* Can't be the same type if they have different alignment, or mode. */ |
4389 | if (TYPE_ALIGN (t1) != TYPE_ALIGN (t2) | |
4390 | || TYPE_MODE (t1) != TYPE_MODE (t2)) | |
4391 | return false; | |
4392 | ||
4393 | /* Non-aggregate types can be handled cheaply. */ | |
825b27de RG |
4394 | if (INTEGRAL_TYPE_P (t1) |
4395 | || SCALAR_FLOAT_TYPE_P (t1) | |
4396 | || FIXED_POINT_TYPE_P (t1) | |
4397 | || TREE_CODE (t1) == VECTOR_TYPE | |
4398 | || TREE_CODE (t1) == COMPLEX_TYPE | |
61332f77 RG |
4399 | || TREE_CODE (t1) == OFFSET_TYPE |
4400 | || POINTER_TYPE_P (t1)) | |
825b27de | 4401 | { |
61332f77 RG |
4402 | /* Can't be the same type if they have different sign or precision. */ |
4403 | if (TYPE_PRECISION (t1) != TYPE_PRECISION (t2) | |
825b27de RG |
4404 | || TYPE_UNSIGNED (t1) != TYPE_UNSIGNED (t2)) |
4405 | return false; | |
4406 | ||
4407 | if (TREE_CODE (t1) == INTEGER_TYPE | |
3ac8781c | 4408 | && TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2)) |
825b27de RG |
4409 | return false; |
4410 | ||
61332f77 RG |
4411 | /* For canonical type comparisons we do not want to build SCCs |
4412 | so we cannot compare pointed-to types. But we can, for now, | |
4413 | require the same pointed-to type kind and match what | |
4414 | useless_type_conversion_p would do. */ | |
4415 | if (POINTER_TYPE_P (t1)) | |
4416 | { | |
4417 | /* If the two pointers have different ref-all attributes, | |
4418 | they can't be the same type. */ | |
4419 | if (TYPE_REF_CAN_ALIAS_ALL (t1) != TYPE_REF_CAN_ALIAS_ALL (t2)) | |
4420 | return false; | |
825b27de | 4421 | |
61332f77 RG |
4422 | if (TYPE_ADDR_SPACE (TREE_TYPE (t1)) |
4423 | != TYPE_ADDR_SPACE (TREE_TYPE (t2))) | |
4424 | return false; | |
825b27de | 4425 | |
61332f77 RG |
4426 | if (TYPE_RESTRICT (t1) != TYPE_RESTRICT (t2)) |
4427 | return false; | |
4428 | ||
4429 | if (TREE_CODE (TREE_TYPE (t1)) != TREE_CODE (TREE_TYPE (t2))) | |
4430 | return false; | |
4431 | } | |
4432 | ||
4433 | /* Tail-recurse to components. */ | |
4434 | if (TREE_CODE (t1) == VECTOR_TYPE | |
4435 | || TREE_CODE (t1) == COMPLEX_TYPE) | |
4436 | return gimple_canonical_types_compatible_p (TREE_TYPE (t1), | |
4437 | TREE_TYPE (t2)); | |
4438 | ||
4439 | return true; | |
825b27de RG |
4440 | } |
4441 | ||
825b27de RG |
4442 | /* Do type-specific comparisons. */ |
4443 | switch (TREE_CODE (t1)) | |
4444 | { | |
825b27de RG |
4445 | case ARRAY_TYPE: |
4446 | /* Array types are the same if the element types are the same and | |
4447 | the number of elements are the same. */ | |
4448 | if (!gimple_canonical_types_compatible_p (TREE_TYPE (t1), TREE_TYPE (t2)) | |
4449 | || TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2) | |
4450 | || TYPE_NONALIASED_COMPONENT (t1) != TYPE_NONALIASED_COMPONENT (t2)) | |
b8a71aed | 4451 | return false; |
825b27de RG |
4452 | else |
4453 | { | |
4454 | tree i1 = TYPE_DOMAIN (t1); | |
4455 | tree i2 = TYPE_DOMAIN (t2); | |
4456 | ||
4457 | /* For an incomplete external array, the type domain can be | |
4458 | NULL_TREE. Check this condition also. */ | |
4459 | if (i1 == NULL_TREE && i2 == NULL_TREE) | |
b8a71aed | 4460 | return true; |
825b27de | 4461 | else if (i1 == NULL_TREE || i2 == NULL_TREE) |
b8a71aed | 4462 | return false; |
825b27de RG |
4463 | else |
4464 | { | |
4465 | tree min1 = TYPE_MIN_VALUE (i1); | |
4466 | tree min2 = TYPE_MIN_VALUE (i2); | |
4467 | tree max1 = TYPE_MAX_VALUE (i1); | |
4468 | tree max2 = TYPE_MAX_VALUE (i2); | |
4469 | ||
4470 | /* The minimum/maximum values have to be the same. */ | |
4471 | if ((min1 == min2 | |
4472 | || (min1 && min2 | |
4473 | && ((TREE_CODE (min1) == PLACEHOLDER_EXPR | |
4474 | && TREE_CODE (min2) == PLACEHOLDER_EXPR) | |
4475 | || operand_equal_p (min1, min2, 0)))) | |
4476 | && (max1 == max2 | |
4477 | || (max1 && max2 | |
4478 | && ((TREE_CODE (max1) == PLACEHOLDER_EXPR | |
4479 | && TREE_CODE (max2) == PLACEHOLDER_EXPR) | |
4480 | || operand_equal_p (max1, max2, 0))))) | |
b8a71aed | 4481 | return true; |
825b27de | 4482 | else |
b8a71aed | 4483 | return false; |
825b27de RG |
4484 | } |
4485 | } | |
4486 | ||
4487 | case METHOD_TYPE: | |
825b27de RG |
4488 | case FUNCTION_TYPE: |
4489 | /* Function types are the same if the return type and arguments types | |
4490 | are the same. */ | |
6a20ce76 | 4491 | if (!gimple_canonical_types_compatible_p (TREE_TYPE (t1), TREE_TYPE (t2))) |
b8a71aed | 4492 | return false; |
825b27de RG |
4493 | |
4494 | if (!comp_type_attributes (t1, t2)) | |
b8a71aed | 4495 | return false; |
825b27de RG |
4496 | |
4497 | if (TYPE_ARG_TYPES (t1) == TYPE_ARG_TYPES (t2)) | |
b8a71aed | 4498 | return true; |
825b27de RG |
4499 | else |
4500 | { | |
4501 | tree parms1, parms2; | |
4502 | ||
4503 | for (parms1 = TYPE_ARG_TYPES (t1), parms2 = TYPE_ARG_TYPES (t2); | |
4504 | parms1 && parms2; | |
4505 | parms1 = TREE_CHAIN (parms1), parms2 = TREE_CHAIN (parms2)) | |
4506 | { | |
6a20ce76 RG |
4507 | if (!gimple_canonical_types_compatible_p |
4508 | (TREE_VALUE (parms1), TREE_VALUE (parms2))) | |
b8a71aed | 4509 | return false; |
825b27de RG |
4510 | } |
4511 | ||
4512 | if (parms1 || parms2) | |
b8a71aed | 4513 | return false; |
825b27de | 4514 | |
b8a71aed | 4515 | return true; |
825b27de RG |
4516 | } |
4517 | ||
825b27de RG |
4518 | case RECORD_TYPE: |
4519 | case UNION_TYPE: | |
4520 | case QUAL_UNION_TYPE: | |
4521 | { | |
4522 | tree f1, f2; | |
4523 | ||
4524 | /* For aggregate types, all the fields must be the same. */ | |
4525 | for (f1 = TYPE_FIELDS (t1), f2 = TYPE_FIELDS (t2); | |
4acd1c84 | 4526 | f1 || f2; |
825b27de RG |
4527 | f1 = TREE_CHAIN (f1), f2 = TREE_CHAIN (f2)) |
4528 | { | |
e7cfe241 RG |
4529 | /* Skip non-fields. */ |
4530 | while (f1 && TREE_CODE (f1) != FIELD_DECL) | |
4531 | f1 = TREE_CHAIN (f1); | |
4532 | while (f2 && TREE_CODE (f2) != FIELD_DECL) | |
4533 | f2 = TREE_CHAIN (f2); | |
4534 | if (!f1 || !f2) | |
4535 | break; | |
825b27de RG |
4536 | /* The fields must have the same name, offset and type. */ |
4537 | if (DECL_NONADDRESSABLE_P (f1) != DECL_NONADDRESSABLE_P (f2) | |
4538 | || !gimple_compare_field_offset (f1, f2) | |
4539 | || !gimple_canonical_types_compatible_p | |
4540 | (TREE_TYPE (f1), TREE_TYPE (f2))) | |
b8a71aed | 4541 | return false; |
825b27de RG |
4542 | } |
4543 | ||
4544 | /* If one aggregate has more fields than the other, they | |
4545 | are not the same. */ | |
4546 | if (f1 || f2) | |
b8a71aed | 4547 | return false; |
825b27de | 4548 | |
b8a71aed | 4549 | return true; |
825b27de RG |
4550 | } |
4551 | ||
4552 | default: | |
4553 | gcc_unreachable (); | |
4554 | } | |
825b27de RG |
4555 | } |
4556 | ||
4557 | ||
4490cae6 RG |
4558 | /* Returns nonzero if P1 and P2 are equal. */ |
4559 | ||
4560 | static int | |
4561 | gimple_canonical_type_eq (const void *p1, const void *p2) | |
4562 | { | |
4563 | const_tree t1 = (const_tree) p1; | |
4564 | const_tree t2 = (const_tree) p2; | |
825b27de RG |
4565 | return gimple_canonical_types_compatible_p (CONST_CAST_TREE (t1), |
4566 | CONST_CAST_TREE (t2)); | |
4490cae6 RG |
4567 | } |
4568 | ||
4569 | /* Register type T in the global type table gimple_types. | |
4570 | If another type T', compatible with T, already existed in | |
4571 | gimple_types then return T', otherwise return T. This is used by | |
96d91dcf RG |
4572 | LTO to merge identical types read from different TUs. |
4573 | ||
4574 | ??? This merging does not exactly match how the tree.c middle-end | |
4575 | functions will assign TYPE_CANONICAL when new types are created | |
4576 | during optimization (which at least happens for pointer and array | |
4577 | types). */ | |
4490cae6 RG |
4578 | |
4579 | tree | |
4580 | gimple_register_canonical_type (tree t) | |
4581 | { | |
4582 | void **slot; | |
4583 | ||
4584 | gcc_assert (TYPE_P (t)); | |
4585 | ||
61332f77 RG |
4586 | if (TYPE_CANONICAL (t)) |
4587 | return TYPE_CANONICAL (t); | |
4588 | ||
4490cae6 | 4589 | if (gimple_canonical_types == NULL) |
a844a60b | 4590 | gimple_canonical_types = htab_create_ggc (16381, gimple_canonical_type_hash, |
4490cae6 RG |
4591 | gimple_canonical_type_eq, 0); |
4592 | ||
4593 | slot = htab_find_slot (gimple_canonical_types, t, INSERT); | |
4594 | if (*slot | |
4595 | && *(tree *)slot != t) | |
4596 | { | |
4597 | tree new_type = (tree) *((tree *) slot); | |
4598 | ||
4599 | TYPE_CANONICAL (t) = new_type; | |
4600 | t = new_type; | |
4601 | } | |
4602 | else | |
4603 | { | |
4604 | TYPE_CANONICAL (t) = t; | |
4a2ac96f RG |
4605 | *slot = (void *) t; |
4606 | } | |
d7f09764 DN |
4607 | |
4608 | return t; | |
4609 | } | |
4610 | ||
4611 | ||
4612 | /* Show statistics on references to the global type table gimple_types. */ | |
4613 | ||
4614 | void | |
4615 | print_gimple_types_stats (void) | |
4616 | { | |
4617 | if (gimple_types) | |
4618 | fprintf (stderr, "GIMPLE type table: size %ld, %ld elements, " | |
4619 | "%ld searches, %ld collisions (ratio: %f)\n", | |
4620 | (long) htab_size (gimple_types), | |
4621 | (long) htab_elements (gimple_types), | |
4622 | (long) gimple_types->searches, | |
4623 | (long) gimple_types->collisions, | |
4624 | htab_collisions (gimple_types)); | |
4625 | else | |
4626 | fprintf (stderr, "GIMPLE type table is empty\n"); | |
a844a60b RG |
4627 | if (type_hash_cache) |
4628 | fprintf (stderr, "GIMPLE type hash table: size %ld, %ld elements, " | |
4629 | "%ld searches, %ld collisions (ratio: %f)\n", | |
4630 | (long) htab_size (type_hash_cache), | |
4631 | (long) htab_elements (type_hash_cache), | |
4632 | (long) type_hash_cache->searches, | |
4633 | (long) type_hash_cache->collisions, | |
4634 | htab_collisions (type_hash_cache)); | |
4635 | else | |
4636 | fprintf (stderr, "GIMPLE type hash table is empty\n"); | |
4490cae6 RG |
4637 | if (gimple_canonical_types) |
4638 | fprintf (stderr, "GIMPLE canonical type table: size %ld, %ld elements, " | |
4639 | "%ld searches, %ld collisions (ratio: %f)\n", | |
4640 | (long) htab_size (gimple_canonical_types), | |
4641 | (long) htab_elements (gimple_canonical_types), | |
4642 | (long) gimple_canonical_types->searches, | |
4643 | (long) gimple_canonical_types->collisions, | |
4644 | htab_collisions (gimple_canonical_types)); | |
4645 | else | |
4646 | fprintf (stderr, "GIMPLE canonical type table is empty\n"); | |
a844a60b RG |
4647 | if (canonical_type_hash_cache) |
4648 | fprintf (stderr, "GIMPLE canonical type hash table: size %ld, %ld elements, " | |
0f443ad0 | 4649 | "%ld searches, %ld collisions (ratio: %f)\n", |
a844a60b RG |
4650 | (long) htab_size (canonical_type_hash_cache), |
4651 | (long) htab_elements (canonical_type_hash_cache), | |
4652 | (long) canonical_type_hash_cache->searches, | |
4653 | (long) canonical_type_hash_cache->collisions, | |
4654 | htab_collisions (canonical_type_hash_cache)); | |
0f443ad0 | 4655 | else |
a844a60b | 4656 | fprintf (stderr, "GIMPLE canonical type hash table is empty\n"); |
d7f09764 DN |
4657 | } |
4658 | ||
0d0bfe17 RG |
4659 | /* Free the gimple type hashtables used for LTO type merging. */ |
4660 | ||
4661 | void | |
4662 | free_gimple_type_tables (void) | |
4663 | { | |
4664 | /* Last chance to print stats for the tables. */ | |
4665 | if (flag_lto_report) | |
4666 | print_gimple_types_stats (); | |
4667 | ||
4668 | if (gimple_types) | |
4669 | { | |
4670 | htab_delete (gimple_types); | |
4671 | gimple_types = NULL; | |
4672 | } | |
4490cae6 RG |
4673 | if (gimple_canonical_types) |
4674 | { | |
4675 | htab_delete (gimple_canonical_types); | |
4676 | gimple_canonical_types = NULL; | |
4677 | } | |
0d0bfe17 RG |
4678 | if (type_hash_cache) |
4679 | { | |
0f443ad0 | 4680 | htab_delete (type_hash_cache); |
0d0bfe17 RG |
4681 | type_hash_cache = NULL; |
4682 | } | |
a844a60b RG |
4683 | if (canonical_type_hash_cache) |
4684 | { | |
4685 | htab_delete (canonical_type_hash_cache); | |
4686 | canonical_type_hash_cache = NULL; | |
4687 | } | |
a30726a4 | 4688 | if (type_pair_cache) |
0d0bfe17 | 4689 | { |
a30726a4 JH |
4690 | free (type_pair_cache); |
4691 | type_pair_cache = NULL; | |
0d0bfe17 | 4692 | } |
4490cae6 | 4693 | gimple_type_leader = NULL; |
0d0bfe17 RG |
4694 | } |
4695 | ||
d7f09764 DN |
4696 | |
4697 | /* Return a type the same as TYPE except unsigned or | |
4698 | signed according to UNSIGNEDP. */ | |
4699 | ||
4700 | static tree | |
4701 | gimple_signed_or_unsigned_type (bool unsignedp, tree type) | |
4702 | { | |
4703 | tree type1; | |
4704 | ||
4705 | type1 = TYPE_MAIN_VARIANT (type); | |
4706 | if (type1 == signed_char_type_node | |
4707 | || type1 == char_type_node | |
4708 | || type1 == unsigned_char_type_node) | |
4709 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
4710 | if (type1 == integer_type_node || type1 == unsigned_type_node) | |
4711 | return unsignedp ? unsigned_type_node : integer_type_node; | |
4712 | if (type1 == short_integer_type_node || type1 == short_unsigned_type_node) | |
4713 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
4714 | if (type1 == long_integer_type_node || type1 == long_unsigned_type_node) | |
4715 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
4716 | if (type1 == long_long_integer_type_node | |
4717 | || type1 == long_long_unsigned_type_node) | |
4718 | return unsignedp | |
4719 | ? long_long_unsigned_type_node | |
4720 | : long_long_integer_type_node; | |
a6766312 KT |
4721 | if (int128_integer_type_node && (type1 == int128_integer_type_node || type1 == int128_unsigned_type_node)) |
4722 | return unsignedp | |
4723 | ? int128_unsigned_type_node | |
4724 | : int128_integer_type_node; | |
d7f09764 DN |
4725 | #if HOST_BITS_PER_WIDE_INT >= 64 |
4726 | if (type1 == intTI_type_node || type1 == unsigned_intTI_type_node) | |
4727 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
4728 | #endif | |
4729 | if (type1 == intDI_type_node || type1 == unsigned_intDI_type_node) | |
4730 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
4731 | if (type1 == intSI_type_node || type1 == unsigned_intSI_type_node) | |
4732 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
4733 | if (type1 == intHI_type_node || type1 == unsigned_intHI_type_node) | |
4734 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
4735 | if (type1 == intQI_type_node || type1 == unsigned_intQI_type_node) | |
4736 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
4737 | ||
4738 | #define GIMPLE_FIXED_TYPES(NAME) \ | |
4739 | if (type1 == short_ ## NAME ## _type_node \ | |
4740 | || type1 == unsigned_short_ ## NAME ## _type_node) \ | |
4741 | return unsignedp ? unsigned_short_ ## NAME ## _type_node \ | |
4742 | : short_ ## NAME ## _type_node; \ | |
4743 | if (type1 == NAME ## _type_node \ | |
4744 | || type1 == unsigned_ ## NAME ## _type_node) \ | |
4745 | return unsignedp ? unsigned_ ## NAME ## _type_node \ | |
4746 | : NAME ## _type_node; \ | |
4747 | if (type1 == long_ ## NAME ## _type_node \ | |
4748 | || type1 == unsigned_long_ ## NAME ## _type_node) \ | |
4749 | return unsignedp ? unsigned_long_ ## NAME ## _type_node \ | |
4750 | : long_ ## NAME ## _type_node; \ | |
4751 | if (type1 == long_long_ ## NAME ## _type_node \ | |
4752 | || type1 == unsigned_long_long_ ## NAME ## _type_node) \ | |
4753 | return unsignedp ? unsigned_long_long_ ## NAME ## _type_node \ | |
4754 | : long_long_ ## NAME ## _type_node; | |
4755 | ||
4756 | #define GIMPLE_FIXED_MODE_TYPES(NAME) \ | |
4757 | if (type1 == NAME ## _type_node \ | |
4758 | || type1 == u ## NAME ## _type_node) \ | |
4759 | return unsignedp ? u ## NAME ## _type_node \ | |
4760 | : NAME ## _type_node; | |
4761 | ||
4762 | #define GIMPLE_FIXED_TYPES_SAT(NAME) \ | |
4763 | if (type1 == sat_ ## short_ ## NAME ## _type_node \ | |
4764 | || type1 == sat_ ## unsigned_short_ ## NAME ## _type_node) \ | |
4765 | return unsignedp ? sat_ ## unsigned_short_ ## NAME ## _type_node \ | |
4766 | : sat_ ## short_ ## NAME ## _type_node; \ | |
4767 | if (type1 == sat_ ## NAME ## _type_node \ | |
4768 | || type1 == sat_ ## unsigned_ ## NAME ## _type_node) \ | |
4769 | return unsignedp ? sat_ ## unsigned_ ## NAME ## _type_node \ | |
4770 | : sat_ ## NAME ## _type_node; \ | |
4771 | if (type1 == sat_ ## long_ ## NAME ## _type_node \ | |
4772 | || type1 == sat_ ## unsigned_long_ ## NAME ## _type_node) \ | |
4773 | return unsignedp ? sat_ ## unsigned_long_ ## NAME ## _type_node \ | |
4774 | : sat_ ## long_ ## NAME ## _type_node; \ | |
4775 | if (type1 == sat_ ## long_long_ ## NAME ## _type_node \ | |
4776 | || type1 == sat_ ## unsigned_long_long_ ## NAME ## _type_node) \ | |
4777 | return unsignedp ? sat_ ## unsigned_long_long_ ## NAME ## _type_node \ | |
4778 | : sat_ ## long_long_ ## NAME ## _type_node; | |
4779 | ||
4780 | #define GIMPLE_FIXED_MODE_TYPES_SAT(NAME) \ | |
4781 | if (type1 == sat_ ## NAME ## _type_node \ | |
4782 | || type1 == sat_ ## u ## NAME ## _type_node) \ | |
4783 | return unsignedp ? sat_ ## u ## NAME ## _type_node \ | |
4784 | : sat_ ## NAME ## _type_node; | |
4785 | ||
4786 | GIMPLE_FIXED_TYPES (fract); | |
4787 | GIMPLE_FIXED_TYPES_SAT (fract); | |
4788 | GIMPLE_FIXED_TYPES (accum); | |
4789 | GIMPLE_FIXED_TYPES_SAT (accum); | |
4790 | ||
4791 | GIMPLE_FIXED_MODE_TYPES (qq); | |
4792 | GIMPLE_FIXED_MODE_TYPES (hq); | |
4793 | GIMPLE_FIXED_MODE_TYPES (sq); | |
4794 | GIMPLE_FIXED_MODE_TYPES (dq); | |
4795 | GIMPLE_FIXED_MODE_TYPES (tq); | |
4796 | GIMPLE_FIXED_MODE_TYPES_SAT (qq); | |
4797 | GIMPLE_FIXED_MODE_TYPES_SAT (hq); | |
4798 | GIMPLE_FIXED_MODE_TYPES_SAT (sq); | |
4799 | GIMPLE_FIXED_MODE_TYPES_SAT (dq); | |
4800 | GIMPLE_FIXED_MODE_TYPES_SAT (tq); | |
4801 | GIMPLE_FIXED_MODE_TYPES (ha); | |
4802 | GIMPLE_FIXED_MODE_TYPES (sa); | |
4803 | GIMPLE_FIXED_MODE_TYPES (da); | |
4804 | GIMPLE_FIXED_MODE_TYPES (ta); | |
4805 | GIMPLE_FIXED_MODE_TYPES_SAT (ha); | |
4806 | GIMPLE_FIXED_MODE_TYPES_SAT (sa); | |
4807 | GIMPLE_FIXED_MODE_TYPES_SAT (da); | |
4808 | GIMPLE_FIXED_MODE_TYPES_SAT (ta); | |
4809 | ||
4810 | /* For ENUMERAL_TYPEs in C++, must check the mode of the types, not | |
4811 | the precision; they have precision set to match their range, but | |
4812 | may use a wider mode to match an ABI. If we change modes, we may | |
4813 | wind up with bad conversions. For INTEGER_TYPEs in C, must check | |
4814 | the precision as well, so as to yield correct results for | |
4815 | bit-field types. C++ does not have these separate bit-field | |
4816 | types, and producing a signed or unsigned variant of an | |
4817 | ENUMERAL_TYPE may cause other problems as well. */ | |
4818 | if (!INTEGRAL_TYPE_P (type) | |
4819 | || TYPE_UNSIGNED (type) == unsignedp) | |
4820 | return type; | |
4821 | ||
4822 | #define TYPE_OK(node) \ | |
4823 | (TYPE_MODE (type) == TYPE_MODE (node) \ | |
4824 | && TYPE_PRECISION (type) == TYPE_PRECISION (node)) | |
4825 | if (TYPE_OK (signed_char_type_node)) | |
4826 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
4827 | if (TYPE_OK (integer_type_node)) | |
4828 | return unsignedp ? unsigned_type_node : integer_type_node; | |
4829 | if (TYPE_OK (short_integer_type_node)) | |
4830 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
4831 | if (TYPE_OK (long_integer_type_node)) | |
4832 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
4833 | if (TYPE_OK (long_long_integer_type_node)) | |
4834 | return (unsignedp | |
4835 | ? long_long_unsigned_type_node | |
4836 | : long_long_integer_type_node); | |
a6766312 KT |
4837 | if (int128_integer_type_node && TYPE_OK (int128_integer_type_node)) |
4838 | return (unsignedp | |
4839 | ? int128_unsigned_type_node | |
4840 | : int128_integer_type_node); | |
d7f09764 DN |
4841 | |
4842 | #if HOST_BITS_PER_WIDE_INT >= 64 | |
4843 | if (TYPE_OK (intTI_type_node)) | |
4844 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
4845 | #endif | |
4846 | if (TYPE_OK (intDI_type_node)) | |
4847 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
4848 | if (TYPE_OK (intSI_type_node)) | |
4849 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
4850 | if (TYPE_OK (intHI_type_node)) | |
4851 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
4852 | if (TYPE_OK (intQI_type_node)) | |
4853 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
4854 | ||
4855 | #undef GIMPLE_FIXED_TYPES | |
4856 | #undef GIMPLE_FIXED_MODE_TYPES | |
4857 | #undef GIMPLE_FIXED_TYPES_SAT | |
4858 | #undef GIMPLE_FIXED_MODE_TYPES_SAT | |
4859 | #undef TYPE_OK | |
4860 | ||
4861 | return build_nonstandard_integer_type (TYPE_PRECISION (type), unsignedp); | |
4862 | } | |
4863 | ||
4864 | ||
4865 | /* Return an unsigned type the same as TYPE in other respects. */ | |
4866 | ||
4867 | tree | |
4868 | gimple_unsigned_type (tree type) | |
4869 | { | |
4870 | return gimple_signed_or_unsigned_type (true, type); | |
4871 | } | |
4872 | ||
4873 | ||
4874 | /* Return a signed type the same as TYPE in other respects. */ | |
4875 | ||
4876 | tree | |
4877 | gimple_signed_type (tree type) | |
4878 | { | |
4879 | return gimple_signed_or_unsigned_type (false, type); | |
4880 | } | |
4881 | ||
4882 | ||
4883 | /* Return the typed-based alias set for T, which may be an expression | |
4884 | or a type. Return -1 if we don't do anything special. */ | |
4885 | ||
4886 | alias_set_type | |
4887 | gimple_get_alias_set (tree t) | |
4888 | { | |
4889 | tree u; | |
4890 | ||
4891 | /* Permit type-punning when accessing a union, provided the access | |
4892 | is directly through the union. For example, this code does not | |
4893 | permit taking the address of a union member and then storing | |
4894 | through it. Even the type-punning allowed here is a GCC | |
4895 | extension, albeit a common and useful one; the C standard says | |
4896 | that such accesses have implementation-defined behavior. */ | |
4897 | for (u = t; | |
4898 | TREE_CODE (u) == COMPONENT_REF || TREE_CODE (u) == ARRAY_REF; | |
4899 | u = TREE_OPERAND (u, 0)) | |
4900 | if (TREE_CODE (u) == COMPONENT_REF | |
4901 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (u, 0))) == UNION_TYPE) | |
4902 | return 0; | |
4903 | ||
4904 | /* That's all the expressions we handle specially. */ | |
4905 | if (!TYPE_P (t)) | |
4906 | return -1; | |
4907 | ||
4908 | /* For convenience, follow the C standard when dealing with | |
4909 | character types. Any object may be accessed via an lvalue that | |
4910 | has character type. */ | |
4911 | if (t == char_type_node | |
4912 | || t == signed_char_type_node | |
4913 | || t == unsigned_char_type_node) | |
4914 | return 0; | |
4915 | ||
4916 | /* Allow aliasing between signed and unsigned variants of the same | |
4917 | type. We treat the signed variant as canonical. */ | |
4918 | if (TREE_CODE (t) == INTEGER_TYPE && TYPE_UNSIGNED (t)) | |
4919 | { | |
4920 | tree t1 = gimple_signed_type (t); | |
4921 | ||
4922 | /* t1 == t can happen for boolean nodes which are always unsigned. */ | |
4923 | if (t1 != t) | |
4924 | return get_alias_set (t1); | |
4925 | } | |
d7f09764 DN |
4926 | |
4927 | return -1; | |
4928 | } | |
4929 | ||
4930 | ||
5006671f RG |
4931 | /* Data structure used to count the number of dereferences to PTR |
4932 | inside an expression. */ | |
4933 | struct count_ptr_d | |
4934 | { | |
4935 | tree ptr; | |
4936 | unsigned num_stores; | |
4937 | unsigned num_loads; | |
4938 | }; | |
4939 | ||
4940 | /* Helper for count_uses_and_derefs. Called by walk_tree to look for | |
4941 | (ALIGN/MISALIGNED_)INDIRECT_REF nodes for the pointer passed in DATA. */ | |
4942 | ||
4943 | static tree | |
4944 | count_ptr_derefs (tree *tp, int *walk_subtrees, void *data) | |
4945 | { | |
4946 | struct walk_stmt_info *wi_p = (struct walk_stmt_info *) data; | |
4947 | struct count_ptr_d *count_p = (struct count_ptr_d *) wi_p->info; | |
4948 | ||
4949 | /* Do not walk inside ADDR_EXPR nodes. In the expression &ptr->fld, | |
4950 | pointer 'ptr' is *not* dereferenced, it is simply used to compute | |
4951 | the address of 'fld' as 'ptr + offsetof(fld)'. */ | |
4952 | if (TREE_CODE (*tp) == ADDR_EXPR) | |
4953 | { | |
4954 | *walk_subtrees = 0; | |
4955 | return NULL_TREE; | |
4956 | } | |
4957 | ||
70f34814 | 4958 | if (TREE_CODE (*tp) == MEM_REF && TREE_OPERAND (*tp, 0) == count_p->ptr) |
5006671f RG |
4959 | { |
4960 | if (wi_p->is_lhs) | |
4961 | count_p->num_stores++; | |
4962 | else | |
4963 | count_p->num_loads++; | |
4964 | } | |
4965 | ||
4966 | return NULL_TREE; | |
4967 | } | |
4968 | ||
4969 | /* Count the number of direct and indirect uses for pointer PTR in | |
4970 | statement STMT. The number of direct uses is stored in | |
4971 | *NUM_USES_P. Indirect references are counted separately depending | |
4972 | on whether they are store or load operations. The counts are | |
4973 | stored in *NUM_STORES_P and *NUM_LOADS_P. */ | |
4974 | ||
4975 | void | |
4976 | count_uses_and_derefs (tree ptr, gimple stmt, unsigned *num_uses_p, | |
4977 | unsigned *num_loads_p, unsigned *num_stores_p) | |
4978 | { | |
4979 | ssa_op_iter i; | |
4980 | tree use; | |
4981 | ||
4982 | *num_uses_p = 0; | |
4983 | *num_loads_p = 0; | |
4984 | *num_stores_p = 0; | |
4985 | ||
4986 | /* Find out the total number of uses of PTR in STMT. */ | |
4987 | FOR_EACH_SSA_TREE_OPERAND (use, stmt, i, SSA_OP_USE) | |
4988 | if (use == ptr) | |
4989 | (*num_uses_p)++; | |
4990 | ||
4991 | /* Now count the number of indirect references to PTR. This is | |
4992 | truly awful, but we don't have much choice. There are no parent | |
4993 | pointers inside INDIRECT_REFs, so an expression like | |
4994 | '*x_1 = foo (x_1, *x_1)' needs to be traversed piece by piece to | |
4995 | find all the indirect and direct uses of x_1 inside. The only | |
4996 | shortcut we can take is the fact that GIMPLE only allows | |
4997 | INDIRECT_REFs inside the expressions below. */ | |
4998 | if (is_gimple_assign (stmt) | |
4999 | || gimple_code (stmt) == GIMPLE_RETURN | |
5000 | || gimple_code (stmt) == GIMPLE_ASM | |
5001 | || is_gimple_call (stmt)) | |
5002 | { | |
5003 | struct walk_stmt_info wi; | |
5004 | struct count_ptr_d count; | |
5005 | ||
5006 | count.ptr = ptr; | |
5007 | count.num_stores = 0; | |
5008 | count.num_loads = 0; | |
5009 | ||
5010 | memset (&wi, 0, sizeof (wi)); | |
5011 | wi.info = &count; | |
5012 | walk_gimple_op (stmt, count_ptr_derefs, &wi); | |
5013 | ||
5014 | *num_stores_p = count.num_stores; | |
5015 | *num_loads_p = count.num_loads; | |
5016 | } | |
5017 | ||
5018 | gcc_assert (*num_uses_p >= *num_loads_p + *num_stores_p); | |
5019 | } | |
5020 | ||
346ef3fa RG |
5021 | /* From a tree operand OP return the base of a load or store operation |
5022 | or NULL_TREE if OP is not a load or a store. */ | |
5023 | ||
5024 | static tree | |
5025 | get_base_loadstore (tree op) | |
5026 | { | |
5027 | while (handled_component_p (op)) | |
5028 | op = TREE_OPERAND (op, 0); | |
5029 | if (DECL_P (op) | |
5030 | || INDIRECT_REF_P (op) | |
70f34814 | 5031 | || TREE_CODE (op) == MEM_REF |
346ef3fa RG |
5032 | || TREE_CODE (op) == TARGET_MEM_REF) |
5033 | return op; | |
5034 | return NULL_TREE; | |
5035 | } | |
5036 | ||
5037 | /* For the statement STMT call the callbacks VISIT_LOAD, VISIT_STORE and | |
5038 | VISIT_ADDR if non-NULL on loads, store and address-taken operands | |
5039 | passing the STMT, the base of the operand and DATA to it. The base | |
5040 | will be either a decl, an indirect reference (including TARGET_MEM_REF) | |
5041 | or the argument of an address expression. | |
5042 | Returns the results of these callbacks or'ed. */ | |
5043 | ||
5044 | bool | |
5045 | walk_stmt_load_store_addr_ops (gimple stmt, void *data, | |
5046 | bool (*visit_load)(gimple, tree, void *), | |
5047 | bool (*visit_store)(gimple, tree, void *), | |
5048 | bool (*visit_addr)(gimple, tree, void *)) | |
5049 | { | |
5050 | bool ret = false; | |
5051 | unsigned i; | |
5052 | if (gimple_assign_single_p (stmt)) | |
5053 | { | |
5054 | tree lhs, rhs; | |
5055 | if (visit_store) | |
5056 | { | |
5057 | lhs = get_base_loadstore (gimple_assign_lhs (stmt)); | |
5058 | if (lhs) | |
5059 | ret |= visit_store (stmt, lhs, data); | |
5060 | } | |
5061 | rhs = gimple_assign_rhs1 (stmt); | |
ad8a1ac0 RG |
5062 | while (handled_component_p (rhs)) |
5063 | rhs = TREE_OPERAND (rhs, 0); | |
346ef3fa RG |
5064 | if (visit_addr) |
5065 | { | |
5066 | if (TREE_CODE (rhs) == ADDR_EXPR) | |
5067 | ret |= visit_addr (stmt, TREE_OPERAND (rhs, 0), data); | |
5068 | else if (TREE_CODE (rhs) == TARGET_MEM_REF | |
5069 | && TREE_CODE (TMR_BASE (rhs)) == ADDR_EXPR) | |
5070 | ret |= visit_addr (stmt, TREE_OPERAND (TMR_BASE (rhs), 0), data); | |
5071 | else if (TREE_CODE (rhs) == OBJ_TYPE_REF | |
5072 | && TREE_CODE (OBJ_TYPE_REF_OBJECT (rhs)) == ADDR_EXPR) | |
5073 | ret |= visit_addr (stmt, TREE_OPERAND (OBJ_TYPE_REF_OBJECT (rhs), | |
5074 | 0), data); | |
cb3d2e33 JJ |
5075 | else if (TREE_CODE (rhs) == CONSTRUCTOR) |
5076 | { | |
5077 | unsigned int ix; | |
5078 | tree val; | |
5079 | ||
5080 | FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (rhs), ix, val) | |
5081 | if (TREE_CODE (val) == ADDR_EXPR) | |
5082 | ret |= visit_addr (stmt, TREE_OPERAND (val, 0), data); | |
5083 | else if (TREE_CODE (val) == OBJ_TYPE_REF | |
5084 | && TREE_CODE (OBJ_TYPE_REF_OBJECT (val)) == ADDR_EXPR) | |
5085 | ret |= visit_addr (stmt, | |
5086 | TREE_OPERAND (OBJ_TYPE_REF_OBJECT (val), | |
5087 | 0), data); | |
5088 | } | |
fff1894c AB |
5089 | lhs = gimple_assign_lhs (stmt); |
5090 | if (TREE_CODE (lhs) == TARGET_MEM_REF | |
fff1894c AB |
5091 | && TREE_CODE (TMR_BASE (lhs)) == ADDR_EXPR) |
5092 | ret |= visit_addr (stmt, TREE_OPERAND (TMR_BASE (lhs), 0), data); | |
346ef3fa RG |
5093 | } |
5094 | if (visit_load) | |
5095 | { | |
5096 | rhs = get_base_loadstore (rhs); | |
5097 | if (rhs) | |
5098 | ret |= visit_load (stmt, rhs, data); | |
5099 | } | |
5100 | } | |
5101 | else if (visit_addr | |
5102 | && (is_gimple_assign (stmt) | |
4d7a65ea | 5103 | || gimple_code (stmt) == GIMPLE_COND)) |
346ef3fa RG |
5104 | { |
5105 | for (i = 0; i < gimple_num_ops (stmt); ++i) | |
9dd58aa4 JJ |
5106 | { |
5107 | tree op = gimple_op (stmt, i); | |
5108 | if (op == NULL_TREE) | |
5109 | ; | |
5110 | else if (TREE_CODE (op) == ADDR_EXPR) | |
5111 | ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data); | |
5112 | /* COND_EXPR and VCOND_EXPR rhs1 argument is a comparison | |
5113 | tree with two operands. */ | |
5114 | else if (i == 1 && COMPARISON_CLASS_P (op)) | |
5115 | { | |
5116 | if (TREE_CODE (TREE_OPERAND (op, 0)) == ADDR_EXPR) | |
5117 | ret |= visit_addr (stmt, TREE_OPERAND (TREE_OPERAND (op, 0), | |
5118 | 0), data); | |
5119 | if (TREE_CODE (TREE_OPERAND (op, 1)) == ADDR_EXPR) | |
5120 | ret |= visit_addr (stmt, TREE_OPERAND (TREE_OPERAND (op, 1), | |
5121 | 0), data); | |
5122 | } | |
5123 | } | |
346ef3fa RG |
5124 | } |
5125 | else if (is_gimple_call (stmt)) | |
5126 | { | |
5127 | if (visit_store) | |
5128 | { | |
5129 | tree lhs = gimple_call_lhs (stmt); | |
5130 | if (lhs) | |
5131 | { | |
5132 | lhs = get_base_loadstore (lhs); | |
5133 | if (lhs) | |
5134 | ret |= visit_store (stmt, lhs, data); | |
5135 | } | |
5136 | } | |
5137 | if (visit_load || visit_addr) | |
5138 | for (i = 0; i < gimple_call_num_args (stmt); ++i) | |
5139 | { | |
5140 | tree rhs = gimple_call_arg (stmt, i); | |
5141 | if (visit_addr | |
5142 | && TREE_CODE (rhs) == ADDR_EXPR) | |
5143 | ret |= visit_addr (stmt, TREE_OPERAND (rhs, 0), data); | |
5144 | else if (visit_load) | |
5145 | { | |
5146 | rhs = get_base_loadstore (rhs); | |
5147 | if (rhs) | |
5148 | ret |= visit_load (stmt, rhs, data); | |
5149 | } | |
5150 | } | |
5151 | if (visit_addr | |
5152 | && gimple_call_chain (stmt) | |
5153 | && TREE_CODE (gimple_call_chain (stmt)) == ADDR_EXPR) | |
5154 | ret |= visit_addr (stmt, TREE_OPERAND (gimple_call_chain (stmt), 0), | |
5155 | data); | |
1d24fdd9 RG |
5156 | if (visit_addr |
5157 | && gimple_call_return_slot_opt_p (stmt) | |
5158 | && gimple_call_lhs (stmt) != NULL_TREE | |
4d61856d | 5159 | && TREE_ADDRESSABLE (TREE_TYPE (gimple_call_lhs (stmt)))) |
1d24fdd9 | 5160 | ret |= visit_addr (stmt, gimple_call_lhs (stmt), data); |
346ef3fa RG |
5161 | } |
5162 | else if (gimple_code (stmt) == GIMPLE_ASM) | |
5163 | { | |
5164 | unsigned noutputs; | |
5165 | const char *constraint; | |
5166 | const char **oconstraints; | |
5167 | bool allows_mem, allows_reg, is_inout; | |
5168 | noutputs = gimple_asm_noutputs (stmt); | |
5169 | oconstraints = XALLOCAVEC (const char *, noutputs); | |
5170 | if (visit_store || visit_addr) | |
5171 | for (i = 0; i < gimple_asm_noutputs (stmt); ++i) | |
5172 | { | |
5173 | tree link = gimple_asm_output_op (stmt, i); | |
5174 | tree op = get_base_loadstore (TREE_VALUE (link)); | |
5175 | if (op && visit_store) | |
5176 | ret |= visit_store (stmt, op, data); | |
5177 | if (visit_addr) | |
5178 | { | |
5179 | constraint = TREE_STRING_POINTER | |
5180 | (TREE_VALUE (TREE_PURPOSE (link))); | |
5181 | oconstraints[i] = constraint; | |
5182 | parse_output_constraint (&constraint, i, 0, 0, &allows_mem, | |
5183 | &allows_reg, &is_inout); | |
5184 | if (op && !allows_reg && allows_mem) | |
5185 | ret |= visit_addr (stmt, op, data); | |
5186 | } | |
5187 | } | |
5188 | if (visit_load || visit_addr) | |
5189 | for (i = 0; i < gimple_asm_ninputs (stmt); ++i) | |
5190 | { | |
5191 | tree link = gimple_asm_input_op (stmt, i); | |
5192 | tree op = TREE_VALUE (link); | |
5193 | if (visit_addr | |
5194 | && TREE_CODE (op) == ADDR_EXPR) | |
5195 | ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data); | |
5196 | else if (visit_load || visit_addr) | |
5197 | { | |
5198 | op = get_base_loadstore (op); | |
5199 | if (op) | |
5200 | { | |
5201 | if (visit_load) | |
5202 | ret |= visit_load (stmt, op, data); | |
5203 | if (visit_addr) | |
5204 | { | |
5205 | constraint = TREE_STRING_POINTER | |
5206 | (TREE_VALUE (TREE_PURPOSE (link))); | |
5207 | parse_input_constraint (&constraint, 0, 0, noutputs, | |
5208 | 0, oconstraints, | |
5209 | &allows_mem, &allows_reg); | |
5210 | if (!allows_reg && allows_mem) | |
5211 | ret |= visit_addr (stmt, op, data); | |
5212 | } | |
5213 | } | |
5214 | } | |
5215 | } | |
5216 | } | |
5217 | else if (gimple_code (stmt) == GIMPLE_RETURN) | |
5218 | { | |
5219 | tree op = gimple_return_retval (stmt); | |
5220 | if (op) | |
5221 | { | |
5222 | if (visit_addr | |
5223 | && TREE_CODE (op) == ADDR_EXPR) | |
5224 | ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data); | |
5225 | else if (visit_load) | |
5226 | { | |
5227 | op = get_base_loadstore (op); | |
5228 | if (op) | |
5229 | ret |= visit_load (stmt, op, data); | |
5230 | } | |
5231 | } | |
5232 | } | |
5233 | else if (visit_addr | |
5234 | && gimple_code (stmt) == GIMPLE_PHI) | |
5235 | { | |
5236 | for (i = 0; i < gimple_phi_num_args (stmt); ++i) | |
5237 | { | |
5238 | tree op = PHI_ARG_DEF (stmt, i); | |
5239 | if (TREE_CODE (op) == ADDR_EXPR) | |
5240 | ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data); | |
5241 | } | |
5242 | } | |
5243 | ||
5244 | return ret; | |
5245 | } | |
5246 | ||
5247 | /* Like walk_stmt_load_store_addr_ops but with NULL visit_addr. IPA-CP | |
5248 | should make a faster clone for this case. */ | |
5249 | ||
5250 | bool | |
5251 | walk_stmt_load_store_ops (gimple stmt, void *data, | |
5252 | bool (*visit_load)(gimple, tree, void *), | |
5253 | bool (*visit_store)(gimple, tree, void *)) | |
5254 | { | |
5255 | return walk_stmt_load_store_addr_ops (stmt, data, | |
5256 | visit_load, visit_store, NULL); | |
5257 | } | |
5258 | ||
ccacdf06 RG |
5259 | /* Helper for gimple_ior_addresses_taken_1. */ |
5260 | ||
5261 | static bool | |
5262 | gimple_ior_addresses_taken_1 (gimple stmt ATTRIBUTE_UNUSED, | |
5263 | tree addr, void *data) | |
5264 | { | |
5265 | bitmap addresses_taken = (bitmap)data; | |
2ea9dc64 RG |
5266 | addr = get_base_address (addr); |
5267 | if (addr | |
5268 | && DECL_P (addr)) | |
ccacdf06 RG |
5269 | { |
5270 | bitmap_set_bit (addresses_taken, DECL_UID (addr)); | |
5271 | return true; | |
5272 | } | |
5273 | return false; | |
5274 | } | |
5275 | ||
5276 | /* Set the bit for the uid of all decls that have their address taken | |
5277 | in STMT in the ADDRESSES_TAKEN bitmap. Returns true if there | |
5278 | were any in this stmt. */ | |
5279 | ||
5280 | bool | |
5281 | gimple_ior_addresses_taken (bitmap addresses_taken, gimple stmt) | |
5282 | { | |
5283 | return walk_stmt_load_store_addr_ops (stmt, addresses_taken, NULL, NULL, | |
5284 | gimple_ior_addresses_taken_1); | |
5285 | } | |
5286 | ||
4537ec0c DN |
5287 | |
5288 | /* Return a printable name for symbol DECL. */ | |
5289 | ||
5290 | const char * | |
5291 | gimple_decl_printable_name (tree decl, int verbosity) | |
5292 | { | |
98b2dfbb RG |
5293 | if (!DECL_NAME (decl)) |
5294 | return NULL; | |
4537ec0c DN |
5295 | |
5296 | if (DECL_ASSEMBLER_NAME_SET_P (decl)) | |
5297 | { | |
5298 | const char *str, *mangled_str; | |
5299 | int dmgl_opts = DMGL_NO_OPTS; | |
5300 | ||
5301 | if (verbosity >= 2) | |
5302 | { | |
5303 | dmgl_opts = DMGL_VERBOSE | |
4537ec0c DN |
5304 | | DMGL_ANSI |
5305 | | DMGL_GNU_V3 | |
5306 | | DMGL_RET_POSTFIX; | |
5307 | if (TREE_CODE (decl) == FUNCTION_DECL) | |
5308 | dmgl_opts |= DMGL_PARAMS; | |
5309 | } | |
5310 | ||
5311 | mangled_str = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); | |
5312 | str = cplus_demangle_v3 (mangled_str, dmgl_opts); | |
5313 | return (str) ? str : mangled_str; | |
5314 | } | |
5315 | ||
5316 | return IDENTIFIER_POINTER (DECL_NAME (decl)); | |
5317 | } | |
5318 | ||
c54c785d JH |
5319 | /* Return true when STMT is builtins call to CODE. */ |
5320 | ||
5321 | bool | |
5322 | gimple_call_builtin_p (gimple stmt, enum built_in_function code) | |
5323 | { | |
5324 | tree fndecl; | |
5325 | return (is_gimple_call (stmt) | |
5326 | && (fndecl = gimple_call_fndecl (stmt)) != NULL | |
5327 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
5328 | && DECL_FUNCTION_CODE (fndecl) == code); | |
5329 | } | |
5330 | ||
edcdea5b NF |
5331 | /* Return true if STMT clobbers memory. STMT is required to be a |
5332 | GIMPLE_ASM. */ | |
5333 | ||
5334 | bool | |
5335 | gimple_asm_clobbers_memory_p (const_gimple stmt) | |
5336 | { | |
5337 | unsigned i; | |
5338 | ||
5339 | for (i = 0; i < gimple_asm_nclobbers (stmt); i++) | |
5340 | { | |
5341 | tree op = gimple_asm_clobber_op (stmt, i); | |
5342 | if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op)), "memory") == 0) | |
5343 | return true; | |
5344 | } | |
5345 | ||
5346 | return false; | |
5347 | } | |
726a989a | 5348 | #include "gt-gimple.h" |