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726a989a RB |
1 | /* Gimple IR support functions. |
2 | ||
d1e082c2 | 3 | Copyright (C) 2007-2013 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" | |
5be5c238 AM |
32 | #include "gimple-iterator.h" |
33 | #include "gimple-walk.h" | |
18f429e2 | 34 | #include "gimple.h" |
45b0be94 | 35 | #include "gimplify.h" |
726a989a | 36 | #include "diagnostic.h" |
726a989a RB |
37 | #include "value-prof.h" |
38 | #include "flags.h" | |
d7f09764 | 39 | #include "alias.h" |
4537ec0c | 40 | #include "demangle.h" |
0f443ad0 | 41 | #include "langhooks.h" |
377d9792 | 42 | #include "bitmap.h" |
726a989a | 43 | |
d7f09764 | 44 | |
f2c4a81c | 45 | /* All the tuples have their operand vector (if present) at the very bottom |
726a989a RB |
46 | of the structure. Therefore, the offset required to find the |
47 | operands vector the size of the structure minus the size of the 1 | |
48 | element tree array at the end (see gimple_ops). */ | |
f2c4a81c RH |
49 | #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) \ |
50 | (HAS_TREE_OP ? sizeof (struct STRUCT) - sizeof (tree) : 0), | |
6bc7bc14 | 51 | EXPORTED_CONST size_t gimple_ops_offset_[] = { |
f2c4a81c RH |
52 | #include "gsstruct.def" |
53 | }; | |
54 | #undef DEFGSSTRUCT | |
55 | ||
c3284718 | 56 | #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) sizeof (struct STRUCT), |
f2c4a81c RH |
57 | static const size_t gsstruct_code_size[] = { |
58 | #include "gsstruct.def" | |
59 | }; | |
60 | #undef DEFGSSTRUCT | |
61 | ||
62 | #define DEFGSCODE(SYM, NAME, GSSCODE) NAME, | |
63 | const char *const gimple_code_name[] = { | |
64 | #include "gimple.def" | |
65 | }; | |
66 | #undef DEFGSCODE | |
67 | ||
68 | #define DEFGSCODE(SYM, NAME, GSSCODE) GSSCODE, | |
69 | EXPORTED_CONST enum gimple_statement_structure_enum gss_for_code_[] = { | |
726a989a RB |
70 | #include "gimple.def" |
71 | }; | |
72 | #undef DEFGSCODE | |
73 | ||
726a989a RB |
74 | /* Gimple stats. */ |
75 | ||
76 | int gimple_alloc_counts[(int) gimple_alloc_kind_all]; | |
77 | int gimple_alloc_sizes[(int) gimple_alloc_kind_all]; | |
78 | ||
79 | /* Keep in sync with gimple.h:enum gimple_alloc_kind. */ | |
80 | static const char * const gimple_alloc_kind_names[] = { | |
81 | "assignments", | |
82 | "phi nodes", | |
83 | "conditionals", | |
726a989a RB |
84 | "everything else" |
85 | }; | |
86 | ||
726a989a RB |
87 | /* Gimple tuple constructors. |
88 | Note: Any constructor taking a ``gimple_seq'' as a parameter, can | |
89 | be passed a NULL to start with an empty sequence. */ | |
90 | ||
91 | /* Set the code for statement G to CODE. */ | |
92 | ||
93 | static inline void | |
94 | gimple_set_code (gimple g, enum gimple_code code) | |
95 | { | |
96 | g->gsbase.code = code; | |
97 | } | |
98 | ||
726a989a RB |
99 | /* Return the number of bytes needed to hold a GIMPLE statement with |
100 | code CODE. */ | |
101 | ||
f2c4a81c | 102 | static inline size_t |
726a989a RB |
103 | gimple_size (enum gimple_code code) |
104 | { | |
f2c4a81c | 105 | return gsstruct_code_size[gss_for_code (code)]; |
726a989a RB |
106 | } |
107 | ||
726a989a RB |
108 | /* Allocate memory for a GIMPLE statement with code CODE and NUM_OPS |
109 | operands. */ | |
110 | ||
d7f09764 | 111 | gimple |
726a989a RB |
112 | gimple_alloc_stat (enum gimple_code code, unsigned num_ops MEM_STAT_DECL) |
113 | { | |
114 | size_t size; | |
115 | gimple stmt; | |
116 | ||
117 | size = gimple_size (code); | |
118 | if (num_ops > 0) | |
119 | size += sizeof (tree) * (num_ops - 1); | |
120 | ||
7aa6d18a SB |
121 | if (GATHER_STATISTICS) |
122 | { | |
123 | enum gimple_alloc_kind kind = gimple_alloc_kind (code); | |
124 | gimple_alloc_counts[(int) kind]++; | |
125 | gimple_alloc_sizes[(int) kind] += size; | |
126 | } | |
726a989a | 127 | |
a9429e29 | 128 | stmt = ggc_alloc_cleared_gimple_statement_d_stat (size PASS_MEM_STAT); |
726a989a RB |
129 | gimple_set_code (stmt, code); |
130 | gimple_set_num_ops (stmt, num_ops); | |
131 | ||
132 | /* Do not call gimple_set_modified here as it has other side | |
133 | effects and this tuple is still not completely built. */ | |
134 | stmt->gsbase.modified = 1; | |
355a7673 | 135 | gimple_init_singleton (stmt); |
726a989a RB |
136 | |
137 | return stmt; | |
138 | } | |
139 | ||
140 | /* Set SUBCODE to be the code of the expression computed by statement G. */ | |
141 | ||
142 | static inline void | |
143 | gimple_set_subcode (gimple g, unsigned subcode) | |
144 | { | |
145 | /* We only have 16 bits for the RHS code. Assert that we are not | |
146 | overflowing it. */ | |
147 | gcc_assert (subcode < (1 << 16)); | |
148 | g->gsbase.subcode = subcode; | |
149 | } | |
150 | ||
151 | ||
152 | ||
153 | /* Build a tuple with operands. CODE is the statement to build (which | |
7d05cebb | 154 | must be one of the GIMPLE_WITH_OPS tuples). SUBCODE is the subcode |
b8698a0f | 155 | for the new tuple. NUM_OPS is the number of operands to allocate. */ |
726a989a RB |
156 | |
157 | #define gimple_build_with_ops(c, s, n) \ | |
158 | gimple_build_with_ops_stat (c, s, n MEM_STAT_INFO) | |
159 | ||
160 | static gimple | |
b5b8b0ac | 161 | gimple_build_with_ops_stat (enum gimple_code code, unsigned subcode, |
726a989a RB |
162 | unsigned num_ops MEM_STAT_DECL) |
163 | { | |
164 | gimple s = gimple_alloc_stat (code, num_ops PASS_MEM_STAT); | |
165 | gimple_set_subcode (s, subcode); | |
166 | ||
167 | return s; | |
168 | } | |
169 | ||
170 | ||
171 | /* Build a GIMPLE_RETURN statement returning RETVAL. */ | |
172 | ||
173 | gimple | |
174 | gimple_build_return (tree retval) | |
175 | { | |
ea9637cd | 176 | gimple s = gimple_build_with_ops (GIMPLE_RETURN, ERROR_MARK, 2); |
726a989a RB |
177 | if (retval) |
178 | gimple_return_set_retval (s, retval); | |
179 | return s; | |
180 | } | |
181 | ||
d086d311 RG |
182 | /* Reset alias information on call S. */ |
183 | ||
184 | void | |
185 | gimple_call_reset_alias_info (gimple s) | |
186 | { | |
187 | if (gimple_call_flags (s) & ECF_CONST) | |
188 | memset (gimple_call_use_set (s), 0, sizeof (struct pt_solution)); | |
189 | else | |
190 | pt_solution_reset (gimple_call_use_set (s)); | |
191 | if (gimple_call_flags (s) & (ECF_CONST|ECF_PURE|ECF_NOVOPS)) | |
192 | memset (gimple_call_clobber_set (s), 0, sizeof (struct pt_solution)); | |
193 | else | |
194 | pt_solution_reset (gimple_call_clobber_set (s)); | |
195 | } | |
196 | ||
21860814 JJ |
197 | /* Helper for gimple_build_call, gimple_build_call_valist, |
198 | gimple_build_call_vec and gimple_build_call_from_tree. Build the basic | |
199 | components of a GIMPLE_CALL statement to function FN with NARGS | |
200 | arguments. */ | |
726a989a RB |
201 | |
202 | static inline gimple | |
203 | gimple_build_call_1 (tree fn, unsigned nargs) | |
204 | { | |
bbbbb16a | 205 | gimple s = gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, nargs + 3); |
7c9577be RG |
206 | if (TREE_CODE (fn) == FUNCTION_DECL) |
207 | fn = build_fold_addr_expr (fn); | |
726a989a | 208 | gimple_set_op (s, 1, fn); |
f20ca725 | 209 | gimple_call_set_fntype (s, TREE_TYPE (TREE_TYPE (fn))); |
d086d311 | 210 | gimple_call_reset_alias_info (s); |
726a989a RB |
211 | return s; |
212 | } | |
213 | ||
214 | ||
215 | /* Build a GIMPLE_CALL statement to function FN with the arguments | |
216 | specified in vector ARGS. */ | |
217 | ||
218 | gimple | |
9771b263 | 219 | gimple_build_call_vec (tree fn, vec<tree> args) |
726a989a RB |
220 | { |
221 | unsigned i; | |
9771b263 | 222 | unsigned nargs = args.length (); |
726a989a RB |
223 | gimple call = gimple_build_call_1 (fn, nargs); |
224 | ||
225 | for (i = 0; i < nargs; i++) | |
9771b263 | 226 | gimple_call_set_arg (call, i, args[i]); |
726a989a RB |
227 | |
228 | return call; | |
229 | } | |
230 | ||
231 | ||
232 | /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of | |
233 | arguments. The ... are the arguments. */ | |
234 | ||
235 | gimple | |
236 | gimple_build_call (tree fn, unsigned nargs, ...) | |
237 | { | |
238 | va_list ap; | |
239 | gimple call; | |
240 | unsigned i; | |
241 | ||
242 | gcc_assert (TREE_CODE (fn) == FUNCTION_DECL || is_gimple_call_addr (fn)); | |
243 | ||
244 | call = gimple_build_call_1 (fn, nargs); | |
245 | ||
246 | va_start (ap, nargs); | |
247 | for (i = 0; i < nargs; i++) | |
248 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
249 | va_end (ap); | |
250 | ||
251 | return call; | |
252 | } | |
253 | ||
254 | ||
21860814 JJ |
255 | /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of |
256 | arguments. AP contains the arguments. */ | |
257 | ||
258 | gimple | |
259 | gimple_build_call_valist (tree fn, unsigned nargs, va_list ap) | |
260 | { | |
261 | gimple call; | |
262 | unsigned i; | |
263 | ||
264 | gcc_assert (TREE_CODE (fn) == FUNCTION_DECL || is_gimple_call_addr (fn)); | |
265 | ||
266 | call = gimple_build_call_1 (fn, nargs); | |
267 | ||
268 | for (i = 0; i < nargs; i++) | |
269 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
270 | ||
271 | return call; | |
272 | } | |
273 | ||
274 | ||
25583c4f RS |
275 | /* Helper for gimple_build_call_internal and gimple_build_call_internal_vec. |
276 | Build the basic components of a GIMPLE_CALL statement to internal | |
277 | function FN with NARGS arguments. */ | |
278 | ||
279 | static inline gimple | |
280 | gimple_build_call_internal_1 (enum internal_fn fn, unsigned nargs) | |
281 | { | |
282 | gimple s = gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, nargs + 3); | |
283 | s->gsbase.subcode |= GF_CALL_INTERNAL; | |
284 | gimple_call_set_internal_fn (s, fn); | |
285 | gimple_call_reset_alias_info (s); | |
286 | return s; | |
287 | } | |
288 | ||
289 | ||
290 | /* Build a GIMPLE_CALL statement to internal function FN. NARGS is | |
291 | the number of arguments. The ... are the arguments. */ | |
292 | ||
293 | gimple | |
294 | gimple_build_call_internal (enum internal_fn fn, unsigned nargs, ...) | |
295 | { | |
296 | va_list ap; | |
297 | gimple call; | |
298 | unsigned i; | |
299 | ||
300 | call = gimple_build_call_internal_1 (fn, nargs); | |
301 | va_start (ap, nargs); | |
302 | for (i = 0; i < nargs; i++) | |
303 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
304 | va_end (ap); | |
305 | ||
306 | return call; | |
307 | } | |
308 | ||
309 | ||
310 | /* Build a GIMPLE_CALL statement to internal function FN with the arguments | |
311 | specified in vector ARGS. */ | |
312 | ||
313 | gimple | |
9771b263 | 314 | gimple_build_call_internal_vec (enum internal_fn fn, vec<tree> args) |
25583c4f RS |
315 | { |
316 | unsigned i, nargs; | |
317 | gimple call; | |
318 | ||
9771b263 | 319 | nargs = args.length (); |
25583c4f RS |
320 | call = gimple_build_call_internal_1 (fn, nargs); |
321 | for (i = 0; i < nargs; i++) | |
9771b263 | 322 | gimple_call_set_arg (call, i, args[i]); |
25583c4f RS |
323 | |
324 | return call; | |
325 | } | |
326 | ||
327 | ||
726a989a RB |
328 | /* Build a GIMPLE_CALL statement from CALL_EXPR T. Note that T is |
329 | assumed to be in GIMPLE form already. Minimal checking is done of | |
330 | this fact. */ | |
331 | ||
332 | gimple | |
333 | gimple_build_call_from_tree (tree t) | |
334 | { | |
335 | unsigned i, nargs; | |
336 | gimple call; | |
337 | tree fndecl = get_callee_fndecl (t); | |
338 | ||
339 | gcc_assert (TREE_CODE (t) == CALL_EXPR); | |
340 | ||
341 | nargs = call_expr_nargs (t); | |
342 | call = gimple_build_call_1 (fndecl ? fndecl : CALL_EXPR_FN (t), nargs); | |
343 | ||
344 | for (i = 0; i < nargs; i++) | |
345 | gimple_call_set_arg (call, i, CALL_EXPR_ARG (t, i)); | |
346 | ||
347 | gimple_set_block (call, TREE_BLOCK (t)); | |
348 | ||
349 | /* Carry all the CALL_EXPR flags to the new GIMPLE_CALL. */ | |
350 | gimple_call_set_chain (call, CALL_EXPR_STATIC_CHAIN (t)); | |
351 | gimple_call_set_tail (call, CALL_EXPR_TAILCALL (t)); | |
726a989a | 352 | gimple_call_set_return_slot_opt (call, CALL_EXPR_RETURN_SLOT_OPT (t)); |
63d2a353 MM |
353 | if (fndecl |
354 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
13e49da9 TV |
355 | && (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_ALLOCA |
356 | || DECL_FUNCTION_CODE (fndecl) == BUILT_IN_ALLOCA_WITH_ALIGN)) | |
63d2a353 MM |
357 | gimple_call_set_alloca_for_var (call, CALL_ALLOCA_FOR_VAR_P (t)); |
358 | else | |
359 | gimple_call_set_from_thunk (call, CALL_FROM_THUNK_P (t)); | |
726a989a | 360 | gimple_call_set_va_arg_pack (call, CALL_EXPR_VA_ARG_PACK (t)); |
9bb1a81b | 361 | gimple_call_set_nothrow (call, TREE_NOTHROW (t)); |
d665b6e5 | 362 | gimple_set_no_warning (call, TREE_NO_WARNING (t)); |
726a989a RB |
363 | |
364 | return call; | |
365 | } | |
366 | ||
367 | ||
726a989a RB |
368 | /* Build a GIMPLE_ASSIGN statement. |
369 | ||
370 | LHS of the assignment. | |
371 | RHS of the assignment which can be unary or binary. */ | |
372 | ||
373 | gimple | |
374 | gimple_build_assign_stat (tree lhs, tree rhs MEM_STAT_DECL) | |
375 | { | |
376 | enum tree_code subcode; | |
0354c0c7 | 377 | tree op1, op2, op3; |
726a989a | 378 | |
0354c0c7 | 379 | extract_ops_from_tree_1 (rhs, &subcode, &op1, &op2, &op3); |
73804b12 RG |
380 | return gimple_build_assign_with_ops (subcode, lhs, op1, op2, op3 |
381 | PASS_MEM_STAT); | |
726a989a RB |
382 | } |
383 | ||
384 | ||
7d05cebb | 385 | /* Build a GIMPLE_ASSIGN statement with subcode SUBCODE and operands |
726a989a RB |
386 | OP1 and OP2. If OP2 is NULL then SUBCODE must be of class |
387 | GIMPLE_UNARY_RHS or GIMPLE_SINGLE_RHS. */ | |
388 | ||
389 | gimple | |
73804b12 RG |
390 | gimple_build_assign_with_ops (enum tree_code subcode, tree lhs, tree op1, |
391 | tree op2, tree op3 MEM_STAT_DECL) | |
726a989a RB |
392 | { |
393 | unsigned num_ops; | |
394 | gimple p; | |
395 | ||
396 | /* Need 1 operand for LHS and 1 or 2 for the RHS (depending on the | |
397 | code). */ | |
398 | num_ops = get_gimple_rhs_num_ops (subcode) + 1; | |
b8698a0f | 399 | |
b5b8b0ac | 400 | p = gimple_build_with_ops_stat (GIMPLE_ASSIGN, (unsigned)subcode, num_ops |
726a989a RB |
401 | PASS_MEM_STAT); |
402 | gimple_assign_set_lhs (p, lhs); | |
403 | gimple_assign_set_rhs1 (p, op1); | |
404 | if (op2) | |
405 | { | |
406 | gcc_assert (num_ops > 2); | |
407 | gimple_assign_set_rhs2 (p, op2); | |
408 | } | |
409 | ||
0354c0c7 BS |
410 | if (op3) |
411 | { | |
412 | gcc_assert (num_ops > 3); | |
413 | gimple_assign_set_rhs3 (p, op3); | |
414 | } | |
415 | ||
726a989a RB |
416 | return p; |
417 | } | |
418 | ||
73804b12 RG |
419 | gimple |
420 | gimple_build_assign_with_ops (enum tree_code subcode, tree lhs, tree op1, | |
421 | tree op2 MEM_STAT_DECL) | |
422 | { | |
423 | return gimple_build_assign_with_ops (subcode, lhs, op1, op2, NULL_TREE | |
424 | PASS_MEM_STAT); | |
425 | } | |
426 | ||
726a989a | 427 | |
726a989a RB |
428 | /* Build a GIMPLE_COND statement. |
429 | ||
430 | PRED is the condition used to compare LHS and the RHS. | |
431 | T_LABEL is the label to jump to if the condition is true. | |
432 | F_LABEL is the label to jump to otherwise. */ | |
433 | ||
434 | gimple | |
435 | gimple_build_cond (enum tree_code pred_code, tree lhs, tree rhs, | |
436 | tree t_label, tree f_label) | |
437 | { | |
438 | gimple p; | |
439 | ||
440 | gcc_assert (TREE_CODE_CLASS (pred_code) == tcc_comparison); | |
441 | p = gimple_build_with_ops (GIMPLE_COND, pred_code, 4); | |
442 | gimple_cond_set_lhs (p, lhs); | |
443 | gimple_cond_set_rhs (p, rhs); | |
444 | gimple_cond_set_true_label (p, t_label); | |
445 | gimple_cond_set_false_label (p, f_label); | |
446 | return p; | |
447 | } | |
448 | ||
726a989a RB |
449 | /* Build a GIMPLE_COND statement from the conditional expression tree |
450 | COND. T_LABEL and F_LABEL are as in gimple_build_cond. */ | |
451 | ||
452 | gimple | |
453 | gimple_build_cond_from_tree (tree cond, tree t_label, tree f_label) | |
454 | { | |
455 | enum tree_code code; | |
456 | tree lhs, rhs; | |
457 | ||
458 | gimple_cond_get_ops_from_tree (cond, &code, &lhs, &rhs); | |
459 | return gimple_build_cond (code, lhs, rhs, t_label, f_label); | |
460 | } | |
461 | ||
462 | /* Set code, lhs, and rhs of a GIMPLE_COND from a suitable | |
463 | boolean expression tree COND. */ | |
464 | ||
465 | void | |
466 | gimple_cond_set_condition_from_tree (gimple stmt, tree cond) | |
467 | { | |
468 | enum tree_code code; | |
469 | tree lhs, rhs; | |
470 | ||
471 | gimple_cond_get_ops_from_tree (cond, &code, &lhs, &rhs); | |
472 | gimple_cond_set_condition (stmt, code, lhs, rhs); | |
473 | } | |
474 | ||
475 | /* Build a GIMPLE_LABEL statement for LABEL. */ | |
476 | ||
477 | gimple | |
478 | gimple_build_label (tree label) | |
479 | { | |
bbbbb16a | 480 | gimple p = gimple_build_with_ops (GIMPLE_LABEL, ERROR_MARK, 1); |
726a989a RB |
481 | gimple_label_set_label (p, label); |
482 | return p; | |
483 | } | |
484 | ||
485 | /* Build a GIMPLE_GOTO statement to label DEST. */ | |
486 | ||
487 | gimple | |
488 | gimple_build_goto (tree dest) | |
489 | { | |
bbbbb16a | 490 | gimple p = gimple_build_with_ops (GIMPLE_GOTO, ERROR_MARK, 1); |
726a989a RB |
491 | gimple_goto_set_dest (p, dest); |
492 | return p; | |
493 | } | |
494 | ||
495 | ||
496 | /* Build a GIMPLE_NOP statement. */ | |
497 | ||
b8698a0f | 498 | gimple |
726a989a RB |
499 | gimple_build_nop (void) |
500 | { | |
501 | return gimple_alloc (GIMPLE_NOP, 0); | |
502 | } | |
503 | ||
504 | ||
505 | /* Build a GIMPLE_BIND statement. | |
506 | VARS are the variables in BODY. | |
507 | BLOCK is the containing block. */ | |
508 | ||
509 | gimple | |
510 | gimple_build_bind (tree vars, gimple_seq body, tree block) | |
511 | { | |
512 | gimple p = gimple_alloc (GIMPLE_BIND, 0); | |
513 | gimple_bind_set_vars (p, vars); | |
514 | if (body) | |
515 | gimple_bind_set_body (p, body); | |
516 | if (block) | |
517 | gimple_bind_set_block (p, block); | |
518 | return p; | |
519 | } | |
520 | ||
521 | /* Helper function to set the simple fields of a asm stmt. | |
522 | ||
523 | STRING is a pointer to a string that is the asm blocks assembly code. | |
524 | NINPUT is the number of register inputs. | |
525 | NOUTPUT is the number of register outputs. | |
526 | NCLOBBERS is the number of clobbered registers. | |
527 | */ | |
528 | ||
529 | static inline gimple | |
b8698a0f | 530 | gimple_build_asm_1 (const char *string, unsigned ninputs, unsigned noutputs, |
1c384bf1 | 531 | unsigned nclobbers, unsigned nlabels) |
726a989a RB |
532 | { |
533 | gimple p; | |
534 | int size = strlen (string); | |
535 | ||
1c384bf1 RH |
536 | /* ASMs with labels cannot have outputs. This should have been |
537 | enforced by the front end. */ | |
538 | gcc_assert (nlabels == 0 || noutputs == 0); | |
539 | ||
bbbbb16a | 540 | p = gimple_build_with_ops (GIMPLE_ASM, ERROR_MARK, |
1c384bf1 | 541 | ninputs + noutputs + nclobbers + nlabels); |
726a989a RB |
542 | |
543 | p->gimple_asm.ni = ninputs; | |
544 | p->gimple_asm.no = noutputs; | |
545 | p->gimple_asm.nc = nclobbers; | |
1c384bf1 | 546 | p->gimple_asm.nl = nlabels; |
726a989a RB |
547 | p->gimple_asm.string = ggc_alloc_string (string, size); |
548 | ||
7aa6d18a SB |
549 | if (GATHER_STATISTICS) |
550 | gimple_alloc_sizes[(int) gimple_alloc_kind (GIMPLE_ASM)] += size; | |
b8698a0f | 551 | |
726a989a RB |
552 | return p; |
553 | } | |
554 | ||
555 | /* Build a GIMPLE_ASM statement. | |
556 | ||
557 | STRING is the assembly code. | |
558 | NINPUT is the number of register inputs. | |
559 | NOUTPUT is the number of register outputs. | |
560 | NCLOBBERS is the number of clobbered registers. | |
561 | INPUTS is a vector of the input register parameters. | |
562 | OUTPUTS is a vector of the output register parameters. | |
1c384bf1 RH |
563 | CLOBBERS is a vector of the clobbered register parameters. |
564 | LABELS is a vector of destination labels. */ | |
726a989a RB |
565 | |
566 | gimple | |
9771b263 DN |
567 | gimple_build_asm_vec (const char *string, vec<tree, va_gc> *inputs, |
568 | vec<tree, va_gc> *outputs, vec<tree, va_gc> *clobbers, | |
569 | vec<tree, va_gc> *labels) | |
726a989a RB |
570 | { |
571 | gimple p; | |
572 | unsigned i; | |
573 | ||
574 | p = gimple_build_asm_1 (string, | |
9771b263 DN |
575 | vec_safe_length (inputs), |
576 | vec_safe_length (outputs), | |
577 | vec_safe_length (clobbers), | |
578 | vec_safe_length (labels)); | |
b8698a0f | 579 | |
9771b263 DN |
580 | for (i = 0; i < vec_safe_length (inputs); i++) |
581 | gimple_asm_set_input_op (p, i, (*inputs)[i]); | |
726a989a | 582 | |
9771b263 DN |
583 | for (i = 0; i < vec_safe_length (outputs); i++) |
584 | gimple_asm_set_output_op (p, i, (*outputs)[i]); | |
726a989a | 585 | |
9771b263 DN |
586 | for (i = 0; i < vec_safe_length (clobbers); i++) |
587 | gimple_asm_set_clobber_op (p, i, (*clobbers)[i]); | |
b8698a0f | 588 | |
9771b263 DN |
589 | for (i = 0; i < vec_safe_length (labels); i++) |
590 | gimple_asm_set_label_op (p, i, (*labels)[i]); | |
b8698a0f | 591 | |
726a989a RB |
592 | return p; |
593 | } | |
594 | ||
595 | /* Build a GIMPLE_CATCH statement. | |
596 | ||
597 | TYPES are the catch types. | |
598 | HANDLER is the exception handler. */ | |
599 | ||
600 | gimple | |
601 | gimple_build_catch (tree types, gimple_seq handler) | |
602 | { | |
603 | gimple p = gimple_alloc (GIMPLE_CATCH, 0); | |
604 | gimple_catch_set_types (p, types); | |
605 | if (handler) | |
606 | gimple_catch_set_handler (p, handler); | |
607 | ||
608 | return p; | |
609 | } | |
610 | ||
611 | /* Build a GIMPLE_EH_FILTER statement. | |
612 | ||
613 | TYPES are the filter's types. | |
614 | FAILURE is the filter's failure action. */ | |
615 | ||
616 | gimple | |
617 | gimple_build_eh_filter (tree types, gimple_seq failure) | |
618 | { | |
619 | gimple p = gimple_alloc (GIMPLE_EH_FILTER, 0); | |
620 | gimple_eh_filter_set_types (p, types); | |
621 | if (failure) | |
622 | gimple_eh_filter_set_failure (p, failure); | |
623 | ||
624 | return p; | |
625 | } | |
626 | ||
1d65f45c RH |
627 | /* Build a GIMPLE_EH_MUST_NOT_THROW statement. */ |
628 | ||
629 | gimple | |
630 | gimple_build_eh_must_not_throw (tree decl) | |
631 | { | |
786f715d | 632 | gimple p = gimple_alloc (GIMPLE_EH_MUST_NOT_THROW, 0); |
1d65f45c RH |
633 | |
634 | gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); | |
635 | gcc_assert (flags_from_decl_or_type (decl) & ECF_NORETURN); | |
d7f09764 | 636 | gimple_eh_must_not_throw_set_fndecl (p, decl); |
1d65f45c RH |
637 | |
638 | return p; | |
639 | } | |
640 | ||
0a35513e AH |
641 | /* Build a GIMPLE_EH_ELSE statement. */ |
642 | ||
643 | gimple | |
644 | gimple_build_eh_else (gimple_seq n_body, gimple_seq e_body) | |
645 | { | |
646 | gimple p = gimple_alloc (GIMPLE_EH_ELSE, 0); | |
647 | gimple_eh_else_set_n_body (p, n_body); | |
648 | gimple_eh_else_set_e_body (p, e_body); | |
649 | return p; | |
650 | } | |
651 | ||
726a989a RB |
652 | /* Build a GIMPLE_TRY statement. |
653 | ||
654 | EVAL is the expression to evaluate. | |
655 | CLEANUP is the cleanup expression. | |
656 | KIND is either GIMPLE_TRY_CATCH or GIMPLE_TRY_FINALLY depending on | |
657 | whether this is a try/catch or a try/finally respectively. */ | |
658 | ||
659 | gimple | |
660 | gimple_build_try (gimple_seq eval, gimple_seq cleanup, | |
661 | enum gimple_try_flags kind) | |
662 | { | |
663 | gimple p; | |
664 | ||
665 | gcc_assert (kind == GIMPLE_TRY_CATCH || kind == GIMPLE_TRY_FINALLY); | |
666 | p = gimple_alloc (GIMPLE_TRY, 0); | |
667 | gimple_set_subcode (p, kind); | |
668 | if (eval) | |
669 | gimple_try_set_eval (p, eval); | |
670 | if (cleanup) | |
671 | gimple_try_set_cleanup (p, cleanup); | |
672 | ||
673 | return p; | |
674 | } | |
675 | ||
676 | /* Construct a GIMPLE_WITH_CLEANUP_EXPR statement. | |
677 | ||
678 | CLEANUP is the cleanup expression. */ | |
679 | ||
680 | gimple | |
681 | gimple_build_wce (gimple_seq cleanup) | |
682 | { | |
683 | gimple p = gimple_alloc (GIMPLE_WITH_CLEANUP_EXPR, 0); | |
684 | if (cleanup) | |
685 | gimple_wce_set_cleanup (p, cleanup); | |
686 | ||
687 | return p; | |
688 | } | |
689 | ||
690 | ||
1d65f45c | 691 | /* Build a GIMPLE_RESX statement. */ |
726a989a RB |
692 | |
693 | gimple | |
694 | gimple_build_resx (int region) | |
695 | { | |
1d65f45c RH |
696 | gimple p = gimple_build_with_ops (GIMPLE_RESX, ERROR_MARK, 0); |
697 | p->gimple_eh_ctrl.region = region; | |
726a989a RB |
698 | return p; |
699 | } | |
700 | ||
701 | ||
702 | /* The helper for constructing a gimple switch statement. | |
703 | INDEX is the switch's index. | |
704 | NLABELS is the number of labels in the switch excluding the default. | |
705 | DEFAULT_LABEL is the default label for the switch statement. */ | |
706 | ||
b8698a0f | 707 | gimple |
1d65f45c | 708 | gimple_build_switch_nlabels (unsigned nlabels, tree index, tree default_label) |
726a989a RB |
709 | { |
710 | /* nlabels + 1 default label + 1 index. */ | |
fd8d363e | 711 | gcc_checking_assert (default_label); |
bbbbb16a | 712 | gimple p = gimple_build_with_ops (GIMPLE_SWITCH, ERROR_MARK, |
fd8d363e | 713 | 1 + 1 + nlabels); |
726a989a | 714 | gimple_switch_set_index (p, index); |
fd8d363e | 715 | gimple_switch_set_default_label (p, default_label); |
726a989a RB |
716 | return p; |
717 | } | |
718 | ||
726a989a RB |
719 | /* Build a GIMPLE_SWITCH statement. |
720 | ||
721 | INDEX is the switch's index. | |
722 | DEFAULT_LABEL is the default label | |
723 | ARGS is a vector of labels excluding the default. */ | |
724 | ||
725 | gimple | |
9771b263 | 726 | gimple_build_switch (tree index, tree default_label, vec<tree> args) |
726a989a | 727 | { |
9771b263 | 728 | unsigned i, nlabels = args.length (); |
fd8d363e | 729 | |
1d65f45c | 730 | gimple p = gimple_build_switch_nlabels (nlabels, index, default_label); |
726a989a | 731 | |
1d65f45c | 732 | /* Copy the labels from the vector to the switch statement. */ |
1d65f45c | 733 | for (i = 0; i < nlabels; i++) |
9771b263 | 734 | gimple_switch_set_label (p, i + 1, args[i]); |
726a989a RB |
735 | |
736 | return p; | |
737 | } | |
738 | ||
1d65f45c RH |
739 | /* Build a GIMPLE_EH_DISPATCH statement. */ |
740 | ||
741 | gimple | |
742 | gimple_build_eh_dispatch (int region) | |
743 | { | |
744 | gimple p = gimple_build_with_ops (GIMPLE_EH_DISPATCH, ERROR_MARK, 0); | |
745 | p->gimple_eh_ctrl.region = region; | |
746 | return p; | |
747 | } | |
726a989a | 748 | |
b5b8b0ac AO |
749 | /* Build a new GIMPLE_DEBUG_BIND statement. |
750 | ||
751 | VAR is bound to VALUE; block and location are taken from STMT. */ | |
752 | ||
753 | gimple | |
754 | gimple_build_debug_bind_stat (tree var, tree value, gimple stmt MEM_STAT_DECL) | |
755 | { | |
756 | gimple p = gimple_build_with_ops_stat (GIMPLE_DEBUG, | |
757 | (unsigned)GIMPLE_DEBUG_BIND, 2 | |
758 | PASS_MEM_STAT); | |
759 | ||
760 | gimple_debug_bind_set_var (p, var); | |
761 | gimple_debug_bind_set_value (p, value); | |
762 | if (stmt) | |
5368224f | 763 | gimple_set_location (p, gimple_location (stmt)); |
b5b8b0ac AO |
764 | |
765 | return p; | |
766 | } | |
767 | ||
768 | ||
ddb555ed JJ |
769 | /* Build a new GIMPLE_DEBUG_SOURCE_BIND statement. |
770 | ||
771 | VAR is bound to VALUE; block and location are taken from STMT. */ | |
772 | ||
773 | gimple | |
774 | gimple_build_debug_source_bind_stat (tree var, tree value, | |
775 | gimple stmt MEM_STAT_DECL) | |
776 | { | |
777 | gimple p = gimple_build_with_ops_stat (GIMPLE_DEBUG, | |
778 | (unsigned)GIMPLE_DEBUG_SOURCE_BIND, 2 | |
779 | PASS_MEM_STAT); | |
780 | ||
781 | gimple_debug_source_bind_set_var (p, var); | |
782 | gimple_debug_source_bind_set_value (p, value); | |
783 | if (stmt) | |
5368224f | 784 | gimple_set_location (p, gimple_location (stmt)); |
ddb555ed JJ |
785 | |
786 | return p; | |
787 | } | |
788 | ||
789 | ||
726a989a RB |
790 | /* Build a GIMPLE_OMP_CRITICAL statement. |
791 | ||
792 | BODY is the sequence of statements for which only one thread can execute. | |
793 | NAME is optional identifier for this critical block. */ | |
794 | ||
b8698a0f | 795 | gimple |
726a989a RB |
796 | gimple_build_omp_critical (gimple_seq body, tree name) |
797 | { | |
798 | gimple p = gimple_alloc (GIMPLE_OMP_CRITICAL, 0); | |
799 | gimple_omp_critical_set_name (p, name); | |
800 | if (body) | |
801 | gimple_omp_set_body (p, body); | |
802 | ||
803 | return p; | |
804 | } | |
805 | ||
806 | /* Build a GIMPLE_OMP_FOR statement. | |
807 | ||
808 | BODY is sequence of statements inside the for loop. | |
74bf76ed | 809 | KIND is the `for' variant. |
b8698a0f | 810 | CLAUSES, are any of the OMP loop construct's clauses: private, firstprivate, |
726a989a RB |
811 | lastprivate, reductions, ordered, schedule, and nowait. |
812 | COLLAPSE is the collapse count. | |
813 | PRE_BODY is the sequence of statements that are loop invariant. */ | |
814 | ||
815 | gimple | |
74bf76ed | 816 | gimple_build_omp_for (gimple_seq body, int kind, tree clauses, size_t collapse, |
726a989a RB |
817 | gimple_seq pre_body) |
818 | { | |
819 | gimple p = gimple_alloc (GIMPLE_OMP_FOR, 0); | |
820 | if (body) | |
821 | gimple_omp_set_body (p, body); | |
822 | gimple_omp_for_set_clauses (p, clauses); | |
74bf76ed | 823 | gimple_omp_for_set_kind (p, kind); |
726a989a | 824 | p->gimple_omp_for.collapse = collapse; |
a9429e29 LB |
825 | p->gimple_omp_for.iter |
826 | = ggc_alloc_cleared_vec_gimple_omp_for_iter (collapse); | |
726a989a RB |
827 | if (pre_body) |
828 | gimple_omp_for_set_pre_body (p, pre_body); | |
829 | ||
830 | return p; | |
831 | } | |
832 | ||
833 | ||
834 | /* Build a GIMPLE_OMP_PARALLEL statement. | |
835 | ||
836 | BODY is sequence of statements which are executed in parallel. | |
837 | CLAUSES, are the OMP parallel construct's clauses. | |
838 | CHILD_FN is the function created for the parallel threads to execute. | |
839 | DATA_ARG are the shared data argument(s). */ | |
840 | ||
b8698a0f L |
841 | gimple |
842 | gimple_build_omp_parallel (gimple_seq body, tree clauses, tree child_fn, | |
726a989a RB |
843 | tree data_arg) |
844 | { | |
845 | gimple p = gimple_alloc (GIMPLE_OMP_PARALLEL, 0); | |
846 | if (body) | |
847 | gimple_omp_set_body (p, body); | |
848 | gimple_omp_parallel_set_clauses (p, clauses); | |
849 | gimple_omp_parallel_set_child_fn (p, child_fn); | |
850 | gimple_omp_parallel_set_data_arg (p, data_arg); | |
851 | ||
852 | return p; | |
853 | } | |
854 | ||
855 | ||
856 | /* Build a GIMPLE_OMP_TASK statement. | |
857 | ||
858 | BODY is sequence of statements which are executed by the explicit task. | |
859 | CLAUSES, are the OMP parallel construct's clauses. | |
860 | CHILD_FN is the function created for the parallel threads to execute. | |
861 | DATA_ARG are the shared data argument(s). | |
862 | COPY_FN is the optional function for firstprivate initialization. | |
863 | ARG_SIZE and ARG_ALIGN are size and alignment of the data block. */ | |
864 | ||
b8698a0f | 865 | gimple |
726a989a RB |
866 | gimple_build_omp_task (gimple_seq body, tree clauses, tree child_fn, |
867 | tree data_arg, tree copy_fn, tree arg_size, | |
868 | tree arg_align) | |
869 | { | |
870 | gimple p = gimple_alloc (GIMPLE_OMP_TASK, 0); | |
871 | if (body) | |
872 | gimple_omp_set_body (p, body); | |
873 | gimple_omp_task_set_clauses (p, clauses); | |
874 | gimple_omp_task_set_child_fn (p, child_fn); | |
875 | gimple_omp_task_set_data_arg (p, data_arg); | |
876 | gimple_omp_task_set_copy_fn (p, copy_fn); | |
877 | gimple_omp_task_set_arg_size (p, arg_size); | |
878 | gimple_omp_task_set_arg_align (p, arg_align); | |
879 | ||
880 | return p; | |
881 | } | |
882 | ||
883 | ||
884 | /* Build a GIMPLE_OMP_SECTION statement for a sections statement. | |
885 | ||
886 | BODY is the sequence of statements in the section. */ | |
887 | ||
888 | gimple | |
889 | gimple_build_omp_section (gimple_seq body) | |
890 | { | |
891 | gimple p = gimple_alloc (GIMPLE_OMP_SECTION, 0); | |
892 | if (body) | |
893 | gimple_omp_set_body (p, body); | |
894 | ||
895 | return p; | |
896 | } | |
897 | ||
898 | ||
899 | /* Build a GIMPLE_OMP_MASTER statement. | |
900 | ||
901 | BODY is the sequence of statements to be executed by just the master. */ | |
902 | ||
b8698a0f | 903 | gimple |
726a989a RB |
904 | gimple_build_omp_master (gimple_seq body) |
905 | { | |
906 | gimple p = gimple_alloc (GIMPLE_OMP_MASTER, 0); | |
907 | if (body) | |
908 | gimple_omp_set_body (p, body); | |
909 | ||
910 | return p; | |
911 | } | |
912 | ||
913 | ||
acf0174b JJ |
914 | /* Build a GIMPLE_OMP_TASKGROUP statement. |
915 | ||
916 | BODY is the sequence of statements to be executed by the taskgroup | |
917 | construct. */ | |
918 | ||
919 | gimple | |
920 | gimple_build_omp_taskgroup (gimple_seq body) | |
921 | { | |
922 | gimple p = gimple_alloc (GIMPLE_OMP_TASKGROUP, 0); | |
923 | if (body) | |
924 | gimple_omp_set_body (p, body); | |
925 | ||
926 | return p; | |
927 | } | |
928 | ||
929 | ||
726a989a RB |
930 | /* Build a GIMPLE_OMP_CONTINUE statement. |
931 | ||
932 | CONTROL_DEF is the definition of the control variable. | |
933 | CONTROL_USE is the use of the control variable. */ | |
934 | ||
b8698a0f | 935 | gimple |
726a989a RB |
936 | gimple_build_omp_continue (tree control_def, tree control_use) |
937 | { | |
938 | gimple p = gimple_alloc (GIMPLE_OMP_CONTINUE, 0); | |
939 | gimple_omp_continue_set_control_def (p, control_def); | |
940 | gimple_omp_continue_set_control_use (p, control_use); | |
941 | return p; | |
942 | } | |
943 | ||
944 | /* Build a GIMPLE_OMP_ORDERED statement. | |
945 | ||
946 | BODY is the sequence of statements inside a loop that will executed in | |
947 | sequence. */ | |
948 | ||
b8698a0f | 949 | gimple |
726a989a RB |
950 | gimple_build_omp_ordered (gimple_seq body) |
951 | { | |
952 | gimple p = gimple_alloc (GIMPLE_OMP_ORDERED, 0); | |
953 | if (body) | |
954 | gimple_omp_set_body (p, body); | |
955 | ||
956 | return p; | |
957 | } | |
958 | ||
959 | ||
960 | /* Build a GIMPLE_OMP_RETURN statement. | |
961 | WAIT_P is true if this is a non-waiting return. */ | |
962 | ||
b8698a0f | 963 | gimple |
726a989a RB |
964 | gimple_build_omp_return (bool wait_p) |
965 | { | |
966 | gimple p = gimple_alloc (GIMPLE_OMP_RETURN, 0); | |
967 | if (wait_p) | |
968 | gimple_omp_return_set_nowait (p); | |
969 | ||
970 | return p; | |
971 | } | |
972 | ||
973 | ||
974 | /* Build a GIMPLE_OMP_SECTIONS statement. | |
975 | ||
976 | BODY is a sequence of section statements. | |
977 | CLAUSES are any of the OMP sections contsruct's clauses: private, | |
978 | firstprivate, lastprivate, reduction, and nowait. */ | |
979 | ||
b8698a0f | 980 | gimple |
726a989a RB |
981 | gimple_build_omp_sections (gimple_seq body, tree clauses) |
982 | { | |
983 | gimple p = gimple_alloc (GIMPLE_OMP_SECTIONS, 0); | |
984 | if (body) | |
985 | gimple_omp_set_body (p, body); | |
986 | gimple_omp_sections_set_clauses (p, clauses); | |
987 | ||
988 | return p; | |
989 | } | |
990 | ||
991 | ||
992 | /* Build a GIMPLE_OMP_SECTIONS_SWITCH. */ | |
993 | ||
994 | gimple | |
995 | gimple_build_omp_sections_switch (void) | |
996 | { | |
997 | return gimple_alloc (GIMPLE_OMP_SECTIONS_SWITCH, 0); | |
998 | } | |
999 | ||
1000 | ||
1001 | /* Build a GIMPLE_OMP_SINGLE statement. | |
1002 | ||
1003 | BODY is the sequence of statements that will be executed once. | |
1004 | CLAUSES are any of the OMP single construct's clauses: private, firstprivate, | |
1005 | copyprivate, nowait. */ | |
1006 | ||
b8698a0f | 1007 | gimple |
726a989a RB |
1008 | gimple_build_omp_single (gimple_seq body, tree clauses) |
1009 | { | |
1010 | gimple p = gimple_alloc (GIMPLE_OMP_SINGLE, 0); | |
1011 | if (body) | |
1012 | gimple_omp_set_body (p, body); | |
1013 | gimple_omp_single_set_clauses (p, clauses); | |
1014 | ||
1015 | return p; | |
1016 | } | |
1017 | ||
1018 | ||
acf0174b JJ |
1019 | /* Build a GIMPLE_OMP_TARGET statement. |
1020 | ||
1021 | BODY is the sequence of statements that will be executed. | |
1022 | CLAUSES are any of the OMP target construct's clauses. */ | |
1023 | ||
1024 | gimple | |
1025 | gimple_build_omp_target (gimple_seq body, int kind, tree clauses) | |
1026 | { | |
1027 | gimple p = gimple_alloc (GIMPLE_OMP_TARGET, 0); | |
1028 | if (body) | |
1029 | gimple_omp_set_body (p, body); | |
1030 | gimple_omp_target_set_clauses (p, clauses); | |
1031 | gimple_omp_target_set_kind (p, kind); | |
1032 | ||
1033 | return p; | |
1034 | } | |
1035 | ||
1036 | ||
1037 | /* Build a GIMPLE_OMP_TEAMS statement. | |
1038 | ||
1039 | BODY is the sequence of statements that will be executed. | |
1040 | CLAUSES are any of the OMP teams construct's clauses. */ | |
1041 | ||
1042 | gimple | |
1043 | gimple_build_omp_teams (gimple_seq body, tree clauses) | |
1044 | { | |
1045 | gimple p = gimple_alloc (GIMPLE_OMP_TEAMS, 0); | |
1046 | if (body) | |
1047 | gimple_omp_set_body (p, body); | |
1048 | gimple_omp_teams_set_clauses (p, clauses); | |
1049 | ||
1050 | return p; | |
1051 | } | |
1052 | ||
1053 | ||
726a989a RB |
1054 | /* Build a GIMPLE_OMP_ATOMIC_LOAD statement. */ |
1055 | ||
1056 | gimple | |
1057 | gimple_build_omp_atomic_load (tree lhs, tree rhs) | |
1058 | { | |
1059 | gimple p = gimple_alloc (GIMPLE_OMP_ATOMIC_LOAD, 0); | |
1060 | gimple_omp_atomic_load_set_lhs (p, lhs); | |
1061 | gimple_omp_atomic_load_set_rhs (p, rhs); | |
1062 | return p; | |
1063 | } | |
1064 | ||
1065 | /* Build a GIMPLE_OMP_ATOMIC_STORE statement. | |
1066 | ||
1067 | VAL is the value we are storing. */ | |
1068 | ||
1069 | gimple | |
1070 | gimple_build_omp_atomic_store (tree val) | |
1071 | { | |
1072 | gimple p = gimple_alloc (GIMPLE_OMP_ATOMIC_STORE, 0); | |
1073 | gimple_omp_atomic_store_set_val (p, val); | |
1074 | return p; | |
1075 | } | |
1076 | ||
0a35513e AH |
1077 | /* Build a GIMPLE_TRANSACTION statement. */ |
1078 | ||
1079 | gimple | |
1080 | gimple_build_transaction (gimple_seq body, tree label) | |
1081 | { | |
1082 | gimple p = gimple_alloc (GIMPLE_TRANSACTION, 0); | |
1083 | gimple_transaction_set_body (p, body); | |
1084 | gimple_transaction_set_label (p, label); | |
1085 | return p; | |
1086 | } | |
1087 | ||
726a989a RB |
1088 | /* Build a GIMPLE_PREDICT statement. PREDICT is one of the predictors from |
1089 | predict.def, OUTCOME is NOT_TAKEN or TAKEN. */ | |
1090 | ||
1091 | gimple | |
1092 | gimple_build_predict (enum br_predictor predictor, enum prediction outcome) | |
1093 | { | |
1094 | gimple p = gimple_alloc (GIMPLE_PREDICT, 0); | |
1095 | /* Ensure all the predictors fit into the lower bits of the subcode. */ | |
e0c68ce9 | 1096 | gcc_assert ((int) END_PREDICTORS <= GF_PREDICT_TAKEN); |
726a989a RB |
1097 | gimple_predict_set_predictor (p, predictor); |
1098 | gimple_predict_set_outcome (p, outcome); | |
1099 | return p; | |
1100 | } | |
1101 | ||
cea094ed | 1102 | #if defined ENABLE_GIMPLE_CHECKING |
726a989a RB |
1103 | /* Complain of a gimple type mismatch and die. */ |
1104 | ||
1105 | void | |
1106 | gimple_check_failed (const_gimple gs, const char *file, int line, | |
1107 | const char *function, enum gimple_code code, | |
1108 | enum tree_code subcode) | |
1109 | { | |
1110 | internal_error ("gimple check: expected %s(%s), have %s(%s) in %s, at %s:%d", | |
1111 | gimple_code_name[code], | |
5806f481 | 1112 | get_tree_code_name (subcode), |
726a989a RB |
1113 | gimple_code_name[gimple_code (gs)], |
1114 | gs->gsbase.subcode > 0 | |
5806f481 | 1115 | ? get_tree_code_name ((enum tree_code) gs->gsbase.subcode) |
726a989a RB |
1116 | : "", |
1117 | function, trim_filename (file), line); | |
1118 | } | |
726a989a RB |
1119 | #endif /* ENABLE_GIMPLE_CHECKING */ |
1120 | ||
1121 | ||
726a989a RB |
1122 | /* Link gimple statement GS to the end of the sequence *SEQ_P. If |
1123 | *SEQ_P is NULL, a new sequence is allocated. */ | |
1124 | ||
1125 | void | |
1126 | gimple_seq_add_stmt (gimple_seq *seq_p, gimple gs) | |
1127 | { | |
1128 | gimple_stmt_iterator si; | |
726a989a RB |
1129 | if (gs == NULL) |
1130 | return; | |
1131 | ||
726a989a RB |
1132 | si = gsi_last (*seq_p); |
1133 | gsi_insert_after (&si, gs, GSI_NEW_STMT); | |
1134 | } | |
1135 | ||
45b0be94 AM |
1136 | /* Link gimple statement GS to the end of the sequence *SEQ_P. If |
1137 | *SEQ_P is NULL, a new sequence is allocated. This function is | |
1138 | similar to gimple_seq_add_stmt, but does not scan the operands. | |
1139 | During gimplification, we need to manipulate statement sequences | |
1140 | before the def/use vectors have been constructed. */ | |
1141 | ||
1142 | void | |
1143 | gimple_seq_add_stmt_without_update (gimple_seq *seq_p, gimple gs) | |
1144 | { | |
1145 | gimple_stmt_iterator si; | |
1146 | ||
1147 | if (gs == NULL) | |
1148 | return; | |
1149 | ||
1150 | si = gsi_last (*seq_p); | |
1151 | gsi_insert_after_without_update (&si, gs, GSI_NEW_STMT); | |
1152 | } | |
726a989a RB |
1153 | |
1154 | /* Append sequence SRC to the end of sequence *DST_P. If *DST_P is | |
1155 | NULL, a new sequence is allocated. */ | |
1156 | ||
1157 | void | |
1158 | gimple_seq_add_seq (gimple_seq *dst_p, gimple_seq src) | |
1159 | { | |
1160 | gimple_stmt_iterator si; | |
726a989a RB |
1161 | if (src == NULL) |
1162 | return; | |
1163 | ||
726a989a RB |
1164 | si = gsi_last (*dst_p); |
1165 | gsi_insert_seq_after (&si, src, GSI_NEW_STMT); | |
1166 | } | |
1167 | ||
45b0be94 AM |
1168 | /* Determine whether to assign a location to the statement GS. */ |
1169 | ||
1170 | static bool | |
1171 | should_carry_location_p (gimple gs) | |
1172 | { | |
1173 | /* Don't emit a line note for a label. We particularly don't want to | |
1174 | emit one for the break label, since it doesn't actually correspond | |
1175 | to the beginning of the loop/switch. */ | |
1176 | if (gimple_code (gs) == GIMPLE_LABEL) | |
1177 | return false; | |
1178 | ||
1179 | return true; | |
1180 | } | |
1181 | ||
1182 | /* Set the location for gimple statement GS to LOCATION. */ | |
1183 | ||
1184 | static void | |
1185 | annotate_one_with_location (gimple gs, location_t location) | |
1186 | { | |
1187 | if (!gimple_has_location (gs) | |
1188 | && !gimple_do_not_emit_location_p (gs) | |
1189 | && should_carry_location_p (gs)) | |
1190 | gimple_set_location (gs, location); | |
1191 | } | |
1192 | ||
1193 | /* Set LOCATION for all the statements after iterator GSI in sequence | |
1194 | SEQ. If GSI is pointing to the end of the sequence, start with the | |
1195 | first statement in SEQ. */ | |
1196 | ||
1197 | void | |
1198 | annotate_all_with_location_after (gimple_seq seq, gimple_stmt_iterator gsi, | |
1199 | location_t location) | |
1200 | { | |
1201 | if (gsi_end_p (gsi)) | |
1202 | gsi = gsi_start (seq); | |
1203 | else | |
1204 | gsi_next (&gsi); | |
1205 | ||
1206 | for (; !gsi_end_p (gsi); gsi_next (&gsi)) | |
1207 | annotate_one_with_location (gsi_stmt (gsi), location); | |
1208 | } | |
1209 | ||
1210 | /* Set the location for all the statements in a sequence STMT_P to LOCATION. */ | |
1211 | ||
1212 | void | |
1213 | annotate_all_with_location (gimple_seq stmt_p, location_t location) | |
1214 | { | |
1215 | gimple_stmt_iterator i; | |
1216 | ||
1217 | if (gimple_seq_empty_p (stmt_p)) | |
1218 | return; | |
1219 | ||
1220 | for (i = gsi_start (stmt_p); !gsi_end_p (i); gsi_next (&i)) | |
1221 | { | |
1222 | gimple gs = gsi_stmt (i); | |
1223 | annotate_one_with_location (gs, location); | |
1224 | } | |
1225 | } | |
726a989a RB |
1226 | |
1227 | /* Helper function of empty_body_p. Return true if STMT is an empty | |
1228 | statement. */ | |
1229 | ||
1230 | static bool | |
1231 | empty_stmt_p (gimple stmt) | |
1232 | { | |
1233 | if (gimple_code (stmt) == GIMPLE_NOP) | |
1234 | return true; | |
1235 | if (gimple_code (stmt) == GIMPLE_BIND) | |
1236 | return empty_body_p (gimple_bind_body (stmt)); | |
1237 | return false; | |
1238 | } | |
1239 | ||
1240 | ||
1241 | /* Return true if BODY contains nothing but empty statements. */ | |
1242 | ||
1243 | bool | |
1244 | empty_body_p (gimple_seq body) | |
1245 | { | |
1246 | gimple_stmt_iterator i; | |
1247 | ||
726a989a RB |
1248 | if (gimple_seq_empty_p (body)) |
1249 | return true; | |
1250 | for (i = gsi_start (body); !gsi_end_p (i); gsi_next (&i)) | |
b5b8b0ac AO |
1251 | if (!empty_stmt_p (gsi_stmt (i)) |
1252 | && !is_gimple_debug (gsi_stmt (i))) | |
726a989a RB |
1253 | return false; |
1254 | ||
1255 | return true; | |
1256 | } | |
1257 | ||
1258 | ||
1259 | /* Perform a deep copy of sequence SRC and return the result. */ | |
1260 | ||
1261 | gimple_seq | |
1262 | gimple_seq_copy (gimple_seq src) | |
1263 | { | |
1264 | gimple_stmt_iterator gsi; | |
355a7673 | 1265 | gimple_seq new_seq = NULL; |
726a989a RB |
1266 | gimple stmt; |
1267 | ||
1268 | for (gsi = gsi_start (src); !gsi_end_p (gsi); gsi_next (&gsi)) | |
1269 | { | |
1270 | stmt = gimple_copy (gsi_stmt (gsi)); | |
82d6e6fc | 1271 | gimple_seq_add_stmt (&new_seq, stmt); |
726a989a RB |
1272 | } |
1273 | ||
82d6e6fc | 1274 | return new_seq; |
726a989a RB |
1275 | } |
1276 | ||
1277 | ||
726a989a | 1278 | |
25583c4f RS |
1279 | /* Return true if calls C1 and C2 are known to go to the same function. */ |
1280 | ||
1281 | bool | |
1282 | gimple_call_same_target_p (const_gimple c1, const_gimple c2) | |
1283 | { | |
1284 | if (gimple_call_internal_p (c1)) | |
1285 | return (gimple_call_internal_p (c2) | |
1286 | && gimple_call_internal_fn (c1) == gimple_call_internal_fn (c2)); | |
1287 | else | |
1288 | return (gimple_call_fn (c1) == gimple_call_fn (c2) | |
1289 | || (gimple_call_fndecl (c1) | |
1290 | && gimple_call_fndecl (c1) == gimple_call_fndecl (c2))); | |
1291 | } | |
1292 | ||
726a989a RB |
1293 | /* Detect flags from a GIMPLE_CALL. This is just like |
1294 | call_expr_flags, but for gimple tuples. */ | |
1295 | ||
1296 | int | |
1297 | gimple_call_flags (const_gimple stmt) | |
1298 | { | |
1299 | int flags; | |
1300 | tree decl = gimple_call_fndecl (stmt); | |
726a989a RB |
1301 | |
1302 | if (decl) | |
1303 | flags = flags_from_decl_or_type (decl); | |
25583c4f RS |
1304 | else if (gimple_call_internal_p (stmt)) |
1305 | flags = internal_fn_flags (gimple_call_internal_fn (stmt)); | |
726a989a | 1306 | else |
97e03fa1 | 1307 | flags = flags_from_decl_or_type (gimple_call_fntype (stmt)); |
726a989a | 1308 | |
9bb1a81b JM |
1309 | if (stmt->gsbase.subcode & GF_CALL_NOTHROW) |
1310 | flags |= ECF_NOTHROW; | |
1311 | ||
726a989a RB |
1312 | return flags; |
1313 | } | |
1314 | ||
25583c4f RS |
1315 | /* Return the "fn spec" string for call STMT. */ |
1316 | ||
1317 | static tree | |
1318 | gimple_call_fnspec (const_gimple stmt) | |
1319 | { | |
1320 | tree type, attr; | |
1321 | ||
1322 | type = gimple_call_fntype (stmt); | |
1323 | if (!type) | |
1324 | return NULL_TREE; | |
1325 | ||
1326 | attr = lookup_attribute ("fn spec", TYPE_ATTRIBUTES (type)); | |
1327 | if (!attr) | |
1328 | return NULL_TREE; | |
1329 | ||
1330 | return TREE_VALUE (TREE_VALUE (attr)); | |
1331 | } | |
1332 | ||
0b7b376d RG |
1333 | /* Detects argument flags for argument number ARG on call STMT. */ |
1334 | ||
1335 | int | |
1336 | gimple_call_arg_flags (const_gimple stmt, unsigned arg) | |
1337 | { | |
25583c4f | 1338 | tree attr = gimple_call_fnspec (stmt); |
0b7b376d | 1339 | |
25583c4f | 1340 | if (!attr || 1 + arg >= (unsigned) TREE_STRING_LENGTH (attr)) |
0b7b376d RG |
1341 | return 0; |
1342 | ||
1343 | switch (TREE_STRING_POINTER (attr)[1 + arg]) | |
1344 | { | |
1345 | case 'x': | |
1346 | case 'X': | |
1347 | return EAF_UNUSED; | |
1348 | ||
1349 | case 'R': | |
1350 | return EAF_DIRECT | EAF_NOCLOBBER | EAF_NOESCAPE; | |
1351 | ||
1352 | case 'r': | |
1353 | return EAF_NOCLOBBER | EAF_NOESCAPE; | |
1354 | ||
1355 | case 'W': | |
1356 | return EAF_DIRECT | EAF_NOESCAPE; | |
1357 | ||
1358 | case 'w': | |
1359 | return EAF_NOESCAPE; | |
1360 | ||
1361 | case '.': | |
1362 | default: | |
1363 | return 0; | |
1364 | } | |
1365 | } | |
1366 | ||
1367 | /* Detects return flags for the call STMT. */ | |
1368 | ||
1369 | int | |
1370 | gimple_call_return_flags (const_gimple stmt) | |
1371 | { | |
25583c4f | 1372 | tree attr; |
0b7b376d RG |
1373 | |
1374 | if (gimple_call_flags (stmt) & ECF_MALLOC) | |
1375 | return ERF_NOALIAS; | |
1376 | ||
25583c4f RS |
1377 | attr = gimple_call_fnspec (stmt); |
1378 | if (!attr || TREE_STRING_LENGTH (attr) < 1) | |
0b7b376d RG |
1379 | return 0; |
1380 | ||
1381 | switch (TREE_STRING_POINTER (attr)[0]) | |
1382 | { | |
1383 | case '1': | |
1384 | case '2': | |
1385 | case '3': | |
1386 | case '4': | |
1387 | return ERF_RETURNS_ARG | (TREE_STRING_POINTER (attr)[0] - '1'); | |
1388 | ||
1389 | case 'm': | |
1390 | return ERF_NOALIAS; | |
1391 | ||
1392 | case '.': | |
1393 | default: | |
1394 | return 0; | |
1395 | } | |
1396 | } | |
726a989a | 1397 | |
3dbe9454 | 1398 | |
726a989a RB |
1399 | /* Return true if GS is a copy assignment. */ |
1400 | ||
1401 | bool | |
1402 | gimple_assign_copy_p (gimple gs) | |
1403 | { | |
3dbe9454 RG |
1404 | return (gimple_assign_single_p (gs) |
1405 | && is_gimple_val (gimple_op (gs, 1))); | |
726a989a RB |
1406 | } |
1407 | ||
1408 | ||
1409 | /* Return true if GS is a SSA_NAME copy assignment. */ | |
1410 | ||
1411 | bool | |
1412 | gimple_assign_ssa_name_copy_p (gimple gs) | |
1413 | { | |
3dbe9454 | 1414 | return (gimple_assign_single_p (gs) |
726a989a RB |
1415 | && TREE_CODE (gimple_assign_lhs (gs)) == SSA_NAME |
1416 | && TREE_CODE (gimple_assign_rhs1 (gs)) == SSA_NAME); | |
1417 | } | |
1418 | ||
1419 | ||
726a989a RB |
1420 | /* Return true if GS is an assignment with a unary RHS, but the |
1421 | operator has no effect on the assigned value. The logic is adapted | |
1422 | from STRIP_NOPS. This predicate is intended to be used in tuplifying | |
1423 | instances in which STRIP_NOPS was previously applied to the RHS of | |
1424 | an assignment. | |
1425 | ||
1426 | NOTE: In the use cases that led to the creation of this function | |
1427 | and of gimple_assign_single_p, it is typical to test for either | |
1428 | condition and to proceed in the same manner. In each case, the | |
1429 | assigned value is represented by the single RHS operand of the | |
1430 | assignment. I suspect there may be cases where gimple_assign_copy_p, | |
1431 | gimple_assign_single_p, or equivalent logic is used where a similar | |
1432 | treatment of unary NOPs is appropriate. */ | |
b8698a0f | 1433 | |
726a989a RB |
1434 | bool |
1435 | gimple_assign_unary_nop_p (gimple gs) | |
1436 | { | |
3dbe9454 | 1437 | return (is_gimple_assign (gs) |
1a87cf0c | 1438 | && (CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (gs)) |
726a989a RB |
1439 | || gimple_assign_rhs_code (gs) == NON_LVALUE_EXPR) |
1440 | && gimple_assign_rhs1 (gs) != error_mark_node | |
1441 | && (TYPE_MODE (TREE_TYPE (gimple_assign_lhs (gs))) | |
1442 | == TYPE_MODE (TREE_TYPE (gimple_assign_rhs1 (gs))))); | |
1443 | } | |
1444 | ||
1445 | /* Set BB to be the basic block holding G. */ | |
1446 | ||
1447 | void | |
1448 | gimple_set_bb (gimple stmt, basic_block bb) | |
1449 | { | |
1450 | stmt->gsbase.bb = bb; | |
1451 | ||
1452 | /* If the statement is a label, add the label to block-to-labels map | |
1453 | so that we can speed up edge creation for GIMPLE_GOTOs. */ | |
1454 | if (cfun->cfg && gimple_code (stmt) == GIMPLE_LABEL) | |
1455 | { | |
1456 | tree t; | |
1457 | int uid; | |
1458 | ||
1459 | t = gimple_label_label (stmt); | |
1460 | uid = LABEL_DECL_UID (t); | |
1461 | if (uid == -1) | |
1462 | { | |
9771b263 | 1463 | unsigned old_len = vec_safe_length (label_to_block_map); |
726a989a RB |
1464 | LABEL_DECL_UID (t) = uid = cfun->cfg->last_label_uid++; |
1465 | if (old_len <= (unsigned) uid) | |
1466 | { | |
5006671f | 1467 | unsigned new_len = 3 * uid / 2 + 1; |
726a989a | 1468 | |
9771b263 | 1469 | vec_safe_grow_cleared (label_to_block_map, new_len); |
726a989a RB |
1470 | } |
1471 | } | |
1472 | ||
9771b263 | 1473 | (*label_to_block_map)[uid] = bb; |
726a989a RB |
1474 | } |
1475 | } | |
1476 | ||
1477 | ||
726a989a RB |
1478 | /* Modify the RHS of the assignment pointed-to by GSI using the |
1479 | operands in the expression tree EXPR. | |
1480 | ||
1481 | NOTE: The statement pointed-to by GSI may be reallocated if it | |
1482 | did not have enough operand slots. | |
1483 | ||
1484 | This function is useful to convert an existing tree expression into | |
1485 | the flat representation used for the RHS of a GIMPLE assignment. | |
1486 | It will reallocate memory as needed to expand or shrink the number | |
1487 | of operand slots needed to represent EXPR. | |
1488 | ||
1489 | NOTE: If you find yourself building a tree and then calling this | |
1490 | function, you are most certainly doing it the slow way. It is much | |
1491 | better to build a new assignment or to use the function | |
1492 | gimple_assign_set_rhs_with_ops, which does not require an | |
1493 | expression tree to be built. */ | |
1494 | ||
1495 | void | |
1496 | gimple_assign_set_rhs_from_tree (gimple_stmt_iterator *gsi, tree expr) | |
1497 | { | |
1498 | enum tree_code subcode; | |
0354c0c7 | 1499 | tree op1, op2, op3; |
726a989a | 1500 | |
0354c0c7 BS |
1501 | extract_ops_from_tree_1 (expr, &subcode, &op1, &op2, &op3); |
1502 | gimple_assign_set_rhs_with_ops_1 (gsi, subcode, op1, op2, op3); | |
726a989a RB |
1503 | } |
1504 | ||
1505 | ||
1506 | /* Set the RHS of assignment statement pointed-to by GSI to CODE with | |
0354c0c7 | 1507 | operands OP1, OP2 and OP3. |
726a989a RB |
1508 | |
1509 | NOTE: The statement pointed-to by GSI may be reallocated if it | |
1510 | did not have enough operand slots. */ | |
1511 | ||
1512 | void | |
0354c0c7 BS |
1513 | gimple_assign_set_rhs_with_ops_1 (gimple_stmt_iterator *gsi, enum tree_code code, |
1514 | tree op1, tree op2, tree op3) | |
726a989a RB |
1515 | { |
1516 | unsigned new_rhs_ops = get_gimple_rhs_num_ops (code); | |
1517 | gimple stmt = gsi_stmt (*gsi); | |
1518 | ||
1519 | /* If the new CODE needs more operands, allocate a new statement. */ | |
1520 | if (gimple_num_ops (stmt) < new_rhs_ops + 1) | |
1521 | { | |
1522 | tree lhs = gimple_assign_lhs (stmt); | |
1523 | gimple new_stmt = gimple_alloc (gimple_code (stmt), new_rhs_ops + 1); | |
1524 | memcpy (new_stmt, stmt, gimple_size (gimple_code (stmt))); | |
355a7673 | 1525 | gimple_init_singleton (new_stmt); |
726a989a RB |
1526 | gsi_replace (gsi, new_stmt, true); |
1527 | stmt = new_stmt; | |
1528 | ||
1529 | /* The LHS needs to be reset as this also changes the SSA name | |
1530 | on the LHS. */ | |
1531 | gimple_assign_set_lhs (stmt, lhs); | |
1532 | } | |
1533 | ||
1534 | gimple_set_num_ops (stmt, new_rhs_ops + 1); | |
1535 | gimple_set_subcode (stmt, code); | |
1536 | gimple_assign_set_rhs1 (stmt, op1); | |
1537 | if (new_rhs_ops > 1) | |
1538 | gimple_assign_set_rhs2 (stmt, op2); | |
0354c0c7 BS |
1539 | if (new_rhs_ops > 2) |
1540 | gimple_assign_set_rhs3 (stmt, op3); | |
726a989a RB |
1541 | } |
1542 | ||
1543 | ||
1544 | /* Return the LHS of a statement that performs an assignment, | |
1545 | either a GIMPLE_ASSIGN or a GIMPLE_CALL. Returns NULL_TREE | |
1546 | for a call to a function that returns no value, or for a | |
1547 | statement other than an assignment or a call. */ | |
1548 | ||
1549 | tree | |
1550 | gimple_get_lhs (const_gimple stmt) | |
1551 | { | |
e0c68ce9 | 1552 | enum gimple_code code = gimple_code (stmt); |
726a989a RB |
1553 | |
1554 | if (code == GIMPLE_ASSIGN) | |
1555 | return gimple_assign_lhs (stmt); | |
1556 | else if (code == GIMPLE_CALL) | |
1557 | return gimple_call_lhs (stmt); | |
1558 | else | |
1559 | return NULL_TREE; | |
1560 | } | |
1561 | ||
1562 | ||
1563 | /* Set the LHS of a statement that performs an assignment, | |
1564 | either a GIMPLE_ASSIGN or a GIMPLE_CALL. */ | |
1565 | ||
1566 | void | |
1567 | gimple_set_lhs (gimple stmt, tree lhs) | |
1568 | { | |
e0c68ce9 | 1569 | enum gimple_code code = gimple_code (stmt); |
726a989a RB |
1570 | |
1571 | if (code == GIMPLE_ASSIGN) | |
1572 | gimple_assign_set_lhs (stmt, lhs); | |
1573 | else if (code == GIMPLE_CALL) | |
1574 | gimple_call_set_lhs (stmt, lhs); | |
1575 | else | |
c3284718 | 1576 | gcc_unreachable (); |
726a989a RB |
1577 | } |
1578 | ||
1579 | ||
1580 | /* Return a deep copy of statement STMT. All the operands from STMT | |
1581 | are reallocated and copied using unshare_expr. The DEF, USE, VDEF | |
355a7673 MM |
1582 | and VUSE operand arrays are set to empty in the new copy. The new |
1583 | copy isn't part of any sequence. */ | |
726a989a RB |
1584 | |
1585 | gimple | |
1586 | gimple_copy (gimple stmt) | |
1587 | { | |
1588 | enum gimple_code code = gimple_code (stmt); | |
1589 | unsigned num_ops = gimple_num_ops (stmt); | |
1590 | gimple copy = gimple_alloc (code, num_ops); | |
1591 | unsigned i; | |
1592 | ||
1593 | /* Shallow copy all the fields from STMT. */ | |
1594 | memcpy (copy, stmt, gimple_size (code)); | |
355a7673 | 1595 | gimple_init_singleton (copy); |
726a989a RB |
1596 | |
1597 | /* If STMT has sub-statements, deep-copy them as well. */ | |
1598 | if (gimple_has_substatements (stmt)) | |
1599 | { | |
1600 | gimple_seq new_seq; | |
1601 | tree t; | |
1602 | ||
1603 | switch (gimple_code (stmt)) | |
1604 | { | |
1605 | case GIMPLE_BIND: | |
1606 | new_seq = gimple_seq_copy (gimple_bind_body (stmt)); | |
1607 | gimple_bind_set_body (copy, new_seq); | |
1608 | gimple_bind_set_vars (copy, unshare_expr (gimple_bind_vars (stmt))); | |
1609 | gimple_bind_set_block (copy, gimple_bind_block (stmt)); | |
1610 | break; | |
1611 | ||
1612 | case GIMPLE_CATCH: | |
1613 | new_seq = gimple_seq_copy (gimple_catch_handler (stmt)); | |
1614 | gimple_catch_set_handler (copy, new_seq); | |
1615 | t = unshare_expr (gimple_catch_types (stmt)); | |
1616 | gimple_catch_set_types (copy, t); | |
1617 | break; | |
1618 | ||
1619 | case GIMPLE_EH_FILTER: | |
1620 | new_seq = gimple_seq_copy (gimple_eh_filter_failure (stmt)); | |
1621 | gimple_eh_filter_set_failure (copy, new_seq); | |
1622 | t = unshare_expr (gimple_eh_filter_types (stmt)); | |
1623 | gimple_eh_filter_set_types (copy, t); | |
1624 | break; | |
1625 | ||
0a35513e AH |
1626 | case GIMPLE_EH_ELSE: |
1627 | new_seq = gimple_seq_copy (gimple_eh_else_n_body (stmt)); | |
1628 | gimple_eh_else_set_n_body (copy, new_seq); | |
1629 | new_seq = gimple_seq_copy (gimple_eh_else_e_body (stmt)); | |
1630 | gimple_eh_else_set_e_body (copy, new_seq); | |
1631 | break; | |
1632 | ||
726a989a RB |
1633 | case GIMPLE_TRY: |
1634 | new_seq = gimple_seq_copy (gimple_try_eval (stmt)); | |
1635 | gimple_try_set_eval (copy, new_seq); | |
1636 | new_seq = gimple_seq_copy (gimple_try_cleanup (stmt)); | |
1637 | gimple_try_set_cleanup (copy, new_seq); | |
1638 | break; | |
1639 | ||
1640 | case GIMPLE_OMP_FOR: | |
1641 | new_seq = gimple_seq_copy (gimple_omp_for_pre_body (stmt)); | |
1642 | gimple_omp_for_set_pre_body (copy, new_seq); | |
1643 | t = unshare_expr (gimple_omp_for_clauses (stmt)); | |
1644 | gimple_omp_for_set_clauses (copy, t); | |
1645 | copy->gimple_omp_for.iter | |
a9429e29 LB |
1646 | = ggc_alloc_vec_gimple_omp_for_iter |
1647 | (gimple_omp_for_collapse (stmt)); | |
726a989a RB |
1648 | for (i = 0; i < gimple_omp_for_collapse (stmt); i++) |
1649 | { | |
1650 | gimple_omp_for_set_cond (copy, i, | |
1651 | gimple_omp_for_cond (stmt, i)); | |
1652 | gimple_omp_for_set_index (copy, i, | |
1653 | gimple_omp_for_index (stmt, i)); | |
1654 | t = unshare_expr (gimple_omp_for_initial (stmt, i)); | |
1655 | gimple_omp_for_set_initial (copy, i, t); | |
1656 | t = unshare_expr (gimple_omp_for_final (stmt, i)); | |
1657 | gimple_omp_for_set_final (copy, i, t); | |
1658 | t = unshare_expr (gimple_omp_for_incr (stmt, i)); | |
1659 | gimple_omp_for_set_incr (copy, i, t); | |
1660 | } | |
1661 | goto copy_omp_body; | |
1662 | ||
1663 | case GIMPLE_OMP_PARALLEL: | |
1664 | t = unshare_expr (gimple_omp_parallel_clauses (stmt)); | |
1665 | gimple_omp_parallel_set_clauses (copy, t); | |
1666 | t = unshare_expr (gimple_omp_parallel_child_fn (stmt)); | |
1667 | gimple_omp_parallel_set_child_fn (copy, t); | |
1668 | t = unshare_expr (gimple_omp_parallel_data_arg (stmt)); | |
1669 | gimple_omp_parallel_set_data_arg (copy, t); | |
1670 | goto copy_omp_body; | |
1671 | ||
1672 | case GIMPLE_OMP_TASK: | |
1673 | t = unshare_expr (gimple_omp_task_clauses (stmt)); | |
1674 | gimple_omp_task_set_clauses (copy, t); | |
1675 | t = unshare_expr (gimple_omp_task_child_fn (stmt)); | |
1676 | gimple_omp_task_set_child_fn (copy, t); | |
1677 | t = unshare_expr (gimple_omp_task_data_arg (stmt)); | |
1678 | gimple_omp_task_set_data_arg (copy, t); | |
1679 | t = unshare_expr (gimple_omp_task_copy_fn (stmt)); | |
1680 | gimple_omp_task_set_copy_fn (copy, t); | |
1681 | t = unshare_expr (gimple_omp_task_arg_size (stmt)); | |
1682 | gimple_omp_task_set_arg_size (copy, t); | |
1683 | t = unshare_expr (gimple_omp_task_arg_align (stmt)); | |
1684 | gimple_omp_task_set_arg_align (copy, t); | |
1685 | goto copy_omp_body; | |
1686 | ||
1687 | case GIMPLE_OMP_CRITICAL: | |
1688 | t = unshare_expr (gimple_omp_critical_name (stmt)); | |
1689 | gimple_omp_critical_set_name (copy, t); | |
1690 | goto copy_omp_body; | |
1691 | ||
1692 | case GIMPLE_OMP_SECTIONS: | |
1693 | t = unshare_expr (gimple_omp_sections_clauses (stmt)); | |
1694 | gimple_omp_sections_set_clauses (copy, t); | |
1695 | t = unshare_expr (gimple_omp_sections_control (stmt)); | |
1696 | gimple_omp_sections_set_control (copy, t); | |
1697 | /* FALLTHRU */ | |
1698 | ||
1699 | case GIMPLE_OMP_SINGLE: | |
acf0174b JJ |
1700 | case GIMPLE_OMP_TARGET: |
1701 | case GIMPLE_OMP_TEAMS: | |
726a989a RB |
1702 | case GIMPLE_OMP_SECTION: |
1703 | case GIMPLE_OMP_MASTER: | |
acf0174b | 1704 | case GIMPLE_OMP_TASKGROUP: |
726a989a RB |
1705 | case GIMPLE_OMP_ORDERED: |
1706 | copy_omp_body: | |
1707 | new_seq = gimple_seq_copy (gimple_omp_body (stmt)); | |
1708 | gimple_omp_set_body (copy, new_seq); | |
1709 | break; | |
1710 | ||
0a35513e AH |
1711 | case GIMPLE_TRANSACTION: |
1712 | new_seq = gimple_seq_copy (gimple_transaction_body (stmt)); | |
1713 | gimple_transaction_set_body (copy, new_seq); | |
1714 | break; | |
1715 | ||
726a989a RB |
1716 | case GIMPLE_WITH_CLEANUP_EXPR: |
1717 | new_seq = gimple_seq_copy (gimple_wce_cleanup (stmt)); | |
1718 | gimple_wce_set_cleanup (copy, new_seq); | |
1719 | break; | |
1720 | ||
1721 | default: | |
1722 | gcc_unreachable (); | |
1723 | } | |
1724 | } | |
1725 | ||
1726 | /* Make copy of operands. */ | |
483ef49f RG |
1727 | for (i = 0; i < num_ops; i++) |
1728 | gimple_set_op (copy, i, unshare_expr (gimple_op (stmt, i))); | |
726a989a | 1729 | |
483ef49f RG |
1730 | if (gimple_has_mem_ops (stmt)) |
1731 | { | |
1732 | gimple_set_vdef (copy, gimple_vdef (stmt)); | |
1733 | gimple_set_vuse (copy, gimple_vuse (stmt)); | |
1734 | } | |
726a989a | 1735 | |
483ef49f RG |
1736 | /* Clear out SSA operand vectors on COPY. */ |
1737 | if (gimple_has_ops (stmt)) | |
1738 | { | |
483ef49f | 1739 | gimple_set_use_ops (copy, NULL); |
726a989a | 1740 | |
5006671f RG |
1741 | /* SSA operands need to be updated. */ |
1742 | gimple_set_modified (copy, true); | |
726a989a RB |
1743 | } |
1744 | ||
1745 | return copy; | |
1746 | } | |
1747 | ||
1748 | ||
726a989a RB |
1749 | /* Return true if statement S has side-effects. We consider a |
1750 | statement to have side effects if: | |
1751 | ||
1752 | - It is a GIMPLE_CALL not marked with ECF_PURE or ECF_CONST. | |
1753 | - Any of its operands are marked TREE_THIS_VOLATILE or TREE_SIDE_EFFECTS. */ | |
1754 | ||
1755 | bool | |
1756 | gimple_has_side_effects (const_gimple s) | |
1757 | { | |
b5b8b0ac AO |
1758 | if (is_gimple_debug (s)) |
1759 | return false; | |
1760 | ||
726a989a RB |
1761 | /* We don't have to scan the arguments to check for |
1762 | volatile arguments, though, at present, we still | |
1763 | do a scan to check for TREE_SIDE_EFFECTS. */ | |
1764 | if (gimple_has_volatile_ops (s)) | |
1765 | return true; | |
1766 | ||
179184e3 RG |
1767 | if (gimple_code (s) == GIMPLE_ASM |
1768 | && gimple_asm_volatile_p (s)) | |
1769 | return true; | |
1770 | ||
726a989a RB |
1771 | if (is_gimple_call (s)) |
1772 | { | |
723afc44 | 1773 | int flags = gimple_call_flags (s); |
726a989a | 1774 | |
723afc44 RG |
1775 | /* An infinite loop is considered a side effect. */ |
1776 | if (!(flags & (ECF_CONST | ECF_PURE)) | |
1777 | || (flags & ECF_LOOPING_CONST_OR_PURE)) | |
726a989a RB |
1778 | return true; |
1779 | ||
726a989a RB |
1780 | return false; |
1781 | } | |
726a989a RB |
1782 | |
1783 | return false; | |
1784 | } | |
1785 | ||
726a989a | 1786 | /* Helper for gimple_could_trap_p and gimple_assign_rhs_could_trap_p. |
e1fd038a SP |
1787 | Return true if S can trap. When INCLUDE_MEM is true, check whether |
1788 | the memory operations could trap. When INCLUDE_STORES is true and | |
1789 | S is a GIMPLE_ASSIGN, the LHS of the assignment is also checked. */ | |
726a989a | 1790 | |
e1fd038a SP |
1791 | bool |
1792 | gimple_could_trap_p_1 (gimple s, bool include_mem, bool include_stores) | |
726a989a | 1793 | { |
726a989a RB |
1794 | tree t, div = NULL_TREE; |
1795 | enum tree_code op; | |
1796 | ||
e1fd038a SP |
1797 | if (include_mem) |
1798 | { | |
1799 | unsigned i, start = (is_gimple_assign (s) && !include_stores) ? 1 : 0; | |
726a989a | 1800 | |
e1fd038a SP |
1801 | for (i = start; i < gimple_num_ops (s); i++) |
1802 | if (tree_could_trap_p (gimple_op (s, i))) | |
1803 | return true; | |
1804 | } | |
726a989a RB |
1805 | |
1806 | switch (gimple_code (s)) | |
1807 | { | |
1808 | case GIMPLE_ASM: | |
1809 | return gimple_asm_volatile_p (s); | |
1810 | ||
1811 | case GIMPLE_CALL: | |
1812 | t = gimple_call_fndecl (s); | |
1813 | /* Assume that calls to weak functions may trap. */ | |
1814 | if (!t || !DECL_P (t) || DECL_WEAK (t)) | |
1815 | return true; | |
1816 | return false; | |
1817 | ||
1818 | case GIMPLE_ASSIGN: | |
1819 | t = gimple_expr_type (s); | |
1820 | op = gimple_assign_rhs_code (s); | |
1821 | if (get_gimple_rhs_class (op) == GIMPLE_BINARY_RHS) | |
1822 | div = gimple_assign_rhs2 (s); | |
1823 | return (operation_could_trap_p (op, FLOAT_TYPE_P (t), | |
1824 | (INTEGRAL_TYPE_P (t) | |
1825 | && TYPE_OVERFLOW_TRAPS (t)), | |
1826 | div)); | |
1827 | ||
1828 | default: | |
1829 | break; | |
1830 | } | |
1831 | ||
1832 | return false; | |
726a989a RB |
1833 | } |
1834 | ||
726a989a RB |
1835 | /* Return true if statement S can trap. */ |
1836 | ||
1837 | bool | |
1838 | gimple_could_trap_p (gimple s) | |
1839 | { | |
e1fd038a | 1840 | return gimple_could_trap_p_1 (s, true, true); |
726a989a RB |
1841 | } |
1842 | ||
726a989a RB |
1843 | /* Return true if RHS of a GIMPLE_ASSIGN S can trap. */ |
1844 | ||
1845 | bool | |
1846 | gimple_assign_rhs_could_trap_p (gimple s) | |
1847 | { | |
1848 | gcc_assert (is_gimple_assign (s)); | |
e1fd038a | 1849 | return gimple_could_trap_p_1 (s, true, false); |
726a989a RB |
1850 | } |
1851 | ||
1852 | ||
1853 | /* Print debugging information for gimple stmts generated. */ | |
1854 | ||
1855 | void | |
1856 | dump_gimple_statistics (void) | |
1857 | { | |
726a989a RB |
1858 | int i, total_tuples = 0, total_bytes = 0; |
1859 | ||
7aa6d18a SB |
1860 | if (! GATHER_STATISTICS) |
1861 | { | |
1862 | fprintf (stderr, "No gimple statistics\n"); | |
1863 | return; | |
1864 | } | |
1865 | ||
726a989a RB |
1866 | fprintf (stderr, "\nGIMPLE statements\n"); |
1867 | fprintf (stderr, "Kind Stmts Bytes\n"); | |
1868 | fprintf (stderr, "---------------------------------------\n"); | |
1869 | for (i = 0; i < (int) gimple_alloc_kind_all; ++i) | |
1870 | { | |
1871 | fprintf (stderr, "%-20s %7d %10d\n", gimple_alloc_kind_names[i], | |
1872 | gimple_alloc_counts[i], gimple_alloc_sizes[i]); | |
1873 | total_tuples += gimple_alloc_counts[i]; | |
1874 | total_bytes += gimple_alloc_sizes[i]; | |
1875 | } | |
1876 | fprintf (stderr, "---------------------------------------\n"); | |
1877 | fprintf (stderr, "%-20s %7d %10d\n", "Total", total_tuples, total_bytes); | |
1878 | fprintf (stderr, "---------------------------------------\n"); | |
726a989a RB |
1879 | } |
1880 | ||
1881 | ||
726a989a RB |
1882 | /* Return the number of operands needed on the RHS of a GIMPLE |
1883 | assignment for an expression with tree code CODE. */ | |
1884 | ||
1885 | unsigned | |
1886 | get_gimple_rhs_num_ops (enum tree_code code) | |
1887 | { | |
1888 | enum gimple_rhs_class rhs_class = get_gimple_rhs_class (code); | |
1889 | ||
1890 | if (rhs_class == GIMPLE_UNARY_RHS || rhs_class == GIMPLE_SINGLE_RHS) | |
1891 | return 1; | |
1892 | else if (rhs_class == GIMPLE_BINARY_RHS) | |
1893 | return 2; | |
0354c0c7 BS |
1894 | else if (rhs_class == GIMPLE_TERNARY_RHS) |
1895 | return 3; | |
726a989a RB |
1896 | else |
1897 | gcc_unreachable (); | |
1898 | } | |
1899 | ||
1900 | #define DEFTREECODE(SYM, STRING, TYPE, NARGS) \ | |
1901 | (unsigned char) \ | |
1902 | ((TYPE) == tcc_unary ? GIMPLE_UNARY_RHS \ | |
1903 | : ((TYPE) == tcc_binary \ | |
1904 | || (TYPE) == tcc_comparison) ? GIMPLE_BINARY_RHS \ | |
1905 | : ((TYPE) == tcc_constant \ | |
1906 | || (TYPE) == tcc_declaration \ | |
1907 | || (TYPE) == tcc_reference) ? GIMPLE_SINGLE_RHS \ | |
1908 | : ((SYM) == TRUTH_AND_EXPR \ | |
1909 | || (SYM) == TRUTH_OR_EXPR \ | |
1910 | || (SYM) == TRUTH_XOR_EXPR) ? GIMPLE_BINARY_RHS \ | |
1911 | : (SYM) == TRUTH_NOT_EXPR ? GIMPLE_UNARY_RHS \ | |
4e71066d RG |
1912 | : ((SYM) == COND_EXPR \ |
1913 | || (SYM) == WIDEN_MULT_PLUS_EXPR \ | |
16949072 | 1914 | || (SYM) == WIDEN_MULT_MINUS_EXPR \ |
f471fe72 RG |
1915 | || (SYM) == DOT_PROD_EXPR \ |
1916 | || (SYM) == REALIGN_LOAD_EXPR \ | |
4e71066d | 1917 | || (SYM) == VEC_COND_EXPR \ |
2205ed25 | 1918 | || (SYM) == VEC_PERM_EXPR \ |
16949072 | 1919 | || (SYM) == FMA_EXPR) ? GIMPLE_TERNARY_RHS \ |
4e71066d | 1920 | : ((SYM) == CONSTRUCTOR \ |
726a989a RB |
1921 | || (SYM) == OBJ_TYPE_REF \ |
1922 | || (SYM) == ASSERT_EXPR \ | |
1923 | || (SYM) == ADDR_EXPR \ | |
1924 | || (SYM) == WITH_SIZE_EXPR \ | |
4e71066d | 1925 | || (SYM) == SSA_NAME) ? GIMPLE_SINGLE_RHS \ |
726a989a RB |
1926 | : GIMPLE_INVALID_RHS), |
1927 | #define END_OF_BASE_TREE_CODES (unsigned char) GIMPLE_INVALID_RHS, | |
1928 | ||
1929 | const unsigned char gimple_rhs_class_table[] = { | |
1930 | #include "all-tree.def" | |
1931 | }; | |
1932 | ||
1933 | #undef DEFTREECODE | |
1934 | #undef END_OF_BASE_TREE_CODES | |
1935 | ||
726a989a RB |
1936 | void |
1937 | recalculate_side_effects (tree t) | |
1938 | { | |
1939 | enum tree_code code = TREE_CODE (t); | |
1940 | int len = TREE_OPERAND_LENGTH (t); | |
1941 | int i; | |
1942 | ||
1943 | switch (TREE_CODE_CLASS (code)) | |
1944 | { | |
1945 | case tcc_expression: | |
1946 | switch (code) | |
1947 | { | |
1948 | case INIT_EXPR: | |
1949 | case MODIFY_EXPR: | |
1950 | case VA_ARG_EXPR: | |
1951 | case PREDECREMENT_EXPR: | |
1952 | case PREINCREMENT_EXPR: | |
1953 | case POSTDECREMENT_EXPR: | |
1954 | case POSTINCREMENT_EXPR: | |
1955 | /* All of these have side-effects, no matter what their | |
1956 | operands are. */ | |
1957 | return; | |
1958 | ||
1959 | default: | |
1960 | break; | |
1961 | } | |
1962 | /* Fall through. */ | |
1963 | ||
1964 | case tcc_comparison: /* a comparison expression */ | |
1965 | case tcc_unary: /* a unary arithmetic expression */ | |
1966 | case tcc_binary: /* a binary arithmetic expression */ | |
1967 | case tcc_reference: /* a reference */ | |
1968 | case tcc_vl_exp: /* a function call */ | |
1969 | TREE_SIDE_EFFECTS (t) = TREE_THIS_VOLATILE (t); | |
1970 | for (i = 0; i < len; ++i) | |
1971 | { | |
1972 | tree op = TREE_OPERAND (t, i); | |
1973 | if (op && TREE_SIDE_EFFECTS (op)) | |
1974 | TREE_SIDE_EFFECTS (t) = 1; | |
1975 | } | |
1976 | break; | |
1977 | ||
13f95bdb EB |
1978 | case tcc_constant: |
1979 | /* No side-effects. */ | |
1980 | return; | |
1981 | ||
726a989a | 1982 | default: |
726a989a RB |
1983 | gcc_unreachable (); |
1984 | } | |
1985 | } | |
1986 | ||
1987 | /* Canonicalize a tree T for use in a COND_EXPR as conditional. Returns | |
1988 | a canonicalized tree that is valid for a COND_EXPR or NULL_TREE, if | |
1989 | we failed to create one. */ | |
1990 | ||
1991 | tree | |
1992 | canonicalize_cond_expr_cond (tree t) | |
1993 | { | |
b66a1bac RG |
1994 | /* Strip conversions around boolean operations. */ |
1995 | if (CONVERT_EXPR_P (t) | |
9b80d091 KT |
1996 | && (truth_value_p (TREE_CODE (TREE_OPERAND (t, 0))) |
1997 | || TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) | |
1998 | == BOOLEAN_TYPE)) | |
b66a1bac RG |
1999 | t = TREE_OPERAND (t, 0); |
2000 | ||
726a989a | 2001 | /* For !x use x == 0. */ |
12430896 | 2002 | if (TREE_CODE (t) == TRUTH_NOT_EXPR) |
726a989a RB |
2003 | { |
2004 | tree top0 = TREE_OPERAND (t, 0); | |
2005 | t = build2 (EQ_EXPR, TREE_TYPE (t), | |
2006 | top0, build_int_cst (TREE_TYPE (top0), 0)); | |
2007 | } | |
2008 | /* For cmp ? 1 : 0 use cmp. */ | |
2009 | else if (TREE_CODE (t) == COND_EXPR | |
2010 | && COMPARISON_CLASS_P (TREE_OPERAND (t, 0)) | |
2011 | && integer_onep (TREE_OPERAND (t, 1)) | |
2012 | && integer_zerop (TREE_OPERAND (t, 2))) | |
2013 | { | |
2014 | tree top0 = TREE_OPERAND (t, 0); | |
2015 | t = build2 (TREE_CODE (top0), TREE_TYPE (t), | |
2016 | TREE_OPERAND (top0, 0), TREE_OPERAND (top0, 1)); | |
2017 | } | |
4481581f JL |
2018 | /* For x ^ y use x != y. */ |
2019 | else if (TREE_CODE (t) == BIT_XOR_EXPR) | |
2020 | t = build2 (NE_EXPR, TREE_TYPE (t), | |
2021 | TREE_OPERAND (t, 0), TREE_OPERAND (t, 1)); | |
2022 | ||
726a989a RB |
2023 | if (is_gimple_condexpr (t)) |
2024 | return t; | |
2025 | ||
2026 | return NULL_TREE; | |
2027 | } | |
2028 | ||
e6c99067 DN |
2029 | /* Build a GIMPLE_CALL identical to STMT but skipping the arguments in |
2030 | the positions marked by the set ARGS_TO_SKIP. */ | |
2031 | ||
c6f7cfc1 | 2032 | gimple |
5c0466b5 | 2033 | gimple_call_copy_skip_args (gimple stmt, bitmap args_to_skip) |
c6f7cfc1 JH |
2034 | { |
2035 | int i; | |
c6f7cfc1 | 2036 | int nargs = gimple_call_num_args (stmt); |
9771b263 DN |
2037 | vec<tree> vargs; |
2038 | vargs.create (nargs); | |
c6f7cfc1 JH |
2039 | gimple new_stmt; |
2040 | ||
2041 | for (i = 0; i < nargs; i++) | |
2042 | if (!bitmap_bit_p (args_to_skip, i)) | |
9771b263 | 2043 | vargs.quick_push (gimple_call_arg (stmt, i)); |
c6f7cfc1 | 2044 | |
25583c4f RS |
2045 | if (gimple_call_internal_p (stmt)) |
2046 | new_stmt = gimple_build_call_internal_vec (gimple_call_internal_fn (stmt), | |
2047 | vargs); | |
2048 | else | |
2049 | new_stmt = gimple_build_call_vec (gimple_call_fn (stmt), vargs); | |
9771b263 | 2050 | vargs.release (); |
c6f7cfc1 JH |
2051 | if (gimple_call_lhs (stmt)) |
2052 | gimple_call_set_lhs (new_stmt, gimple_call_lhs (stmt)); | |
2053 | ||
5006671f RG |
2054 | gimple_set_vuse (new_stmt, gimple_vuse (stmt)); |
2055 | gimple_set_vdef (new_stmt, gimple_vdef (stmt)); | |
2056 | ||
c6f7cfc1 JH |
2057 | if (gimple_has_location (stmt)) |
2058 | gimple_set_location (new_stmt, gimple_location (stmt)); | |
8d2adc24 | 2059 | gimple_call_copy_flags (new_stmt, stmt); |
c6f7cfc1 | 2060 | gimple_call_set_chain (new_stmt, gimple_call_chain (stmt)); |
5006671f RG |
2061 | |
2062 | gimple_set_modified (new_stmt, true); | |
2063 | ||
c6f7cfc1 JH |
2064 | return new_stmt; |
2065 | } | |
2066 | ||
5006671f | 2067 | |
d7f09764 | 2068 | |
d025732d EB |
2069 | /* Return true if the field decls F1 and F2 are at the same offset. |
2070 | ||
91f2fae8 | 2071 | This is intended to be used on GIMPLE types only. */ |
d7f09764 | 2072 | |
1e4bc4eb | 2073 | bool |
d025732d | 2074 | gimple_compare_field_offset (tree f1, tree f2) |
d7f09764 DN |
2075 | { |
2076 | if (DECL_OFFSET_ALIGN (f1) == DECL_OFFSET_ALIGN (f2)) | |
d025732d EB |
2077 | { |
2078 | tree offset1 = DECL_FIELD_OFFSET (f1); | |
2079 | tree offset2 = DECL_FIELD_OFFSET (f2); | |
2080 | return ((offset1 == offset2 | |
2081 | /* Once gimplification is done, self-referential offsets are | |
2082 | instantiated as operand #2 of the COMPONENT_REF built for | |
2083 | each access and reset. Therefore, they are not relevant | |
2084 | anymore and fields are interchangeable provided that they | |
2085 | represent the same access. */ | |
2086 | || (TREE_CODE (offset1) == PLACEHOLDER_EXPR | |
2087 | && TREE_CODE (offset2) == PLACEHOLDER_EXPR | |
2088 | && (DECL_SIZE (f1) == DECL_SIZE (f2) | |
2089 | || (TREE_CODE (DECL_SIZE (f1)) == PLACEHOLDER_EXPR | |
2090 | && TREE_CODE (DECL_SIZE (f2)) == PLACEHOLDER_EXPR) | |
2091 | || operand_equal_p (DECL_SIZE (f1), DECL_SIZE (f2), 0)) | |
2092 | && DECL_ALIGN (f1) == DECL_ALIGN (f2)) | |
2093 | || operand_equal_p (offset1, offset2, 0)) | |
2094 | && tree_int_cst_equal (DECL_FIELD_BIT_OFFSET (f1), | |
2095 | DECL_FIELD_BIT_OFFSET (f2))); | |
2096 | } | |
d7f09764 DN |
2097 | |
2098 | /* Fortran and C do not always agree on what DECL_OFFSET_ALIGN | |
2099 | should be, so handle differing ones specially by decomposing | |
2100 | the offset into a byte and bit offset manually. */ | |
2101 | if (host_integerp (DECL_FIELD_OFFSET (f1), 0) | |
2102 | && host_integerp (DECL_FIELD_OFFSET (f2), 0)) | |
2103 | { | |
2104 | unsigned HOST_WIDE_INT byte_offset1, byte_offset2; | |
2105 | unsigned HOST_WIDE_INT bit_offset1, bit_offset2; | |
2106 | bit_offset1 = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f1)); | |
2107 | byte_offset1 = (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f1)) | |
2108 | + bit_offset1 / BITS_PER_UNIT); | |
2109 | bit_offset2 = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f2)); | |
2110 | byte_offset2 = (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f2)) | |
2111 | + bit_offset2 / BITS_PER_UNIT); | |
2112 | if (byte_offset1 != byte_offset2) | |
2113 | return false; | |
2114 | return bit_offset1 % BITS_PER_UNIT == bit_offset2 % BITS_PER_UNIT; | |
2115 | } | |
2116 | ||
2117 | return false; | |
2118 | } | |
2119 | ||
d7f09764 DN |
2120 | |
2121 | /* Return a type the same as TYPE except unsigned or | |
2122 | signed according to UNSIGNEDP. */ | |
2123 | ||
2124 | static tree | |
2125 | gimple_signed_or_unsigned_type (bool unsignedp, tree type) | |
2126 | { | |
2127 | tree type1; | |
2128 | ||
2129 | type1 = TYPE_MAIN_VARIANT (type); | |
2130 | if (type1 == signed_char_type_node | |
2131 | || type1 == char_type_node | |
2132 | || type1 == unsigned_char_type_node) | |
2133 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
2134 | if (type1 == integer_type_node || type1 == unsigned_type_node) | |
2135 | return unsignedp ? unsigned_type_node : integer_type_node; | |
2136 | if (type1 == short_integer_type_node || type1 == short_unsigned_type_node) | |
2137 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
2138 | if (type1 == long_integer_type_node || type1 == long_unsigned_type_node) | |
2139 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
2140 | if (type1 == long_long_integer_type_node | |
2141 | || type1 == long_long_unsigned_type_node) | |
2142 | return unsignedp | |
2143 | ? long_long_unsigned_type_node | |
2144 | : long_long_integer_type_node; | |
a6766312 KT |
2145 | if (int128_integer_type_node && (type1 == int128_integer_type_node || type1 == int128_unsigned_type_node)) |
2146 | return unsignedp | |
2147 | ? int128_unsigned_type_node | |
2148 | : int128_integer_type_node; | |
d7f09764 DN |
2149 | #if HOST_BITS_PER_WIDE_INT >= 64 |
2150 | if (type1 == intTI_type_node || type1 == unsigned_intTI_type_node) | |
2151 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
2152 | #endif | |
2153 | if (type1 == intDI_type_node || type1 == unsigned_intDI_type_node) | |
2154 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
2155 | if (type1 == intSI_type_node || type1 == unsigned_intSI_type_node) | |
2156 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
2157 | if (type1 == intHI_type_node || type1 == unsigned_intHI_type_node) | |
2158 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
2159 | if (type1 == intQI_type_node || type1 == unsigned_intQI_type_node) | |
2160 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
2161 | ||
2162 | #define GIMPLE_FIXED_TYPES(NAME) \ | |
2163 | if (type1 == short_ ## NAME ## _type_node \ | |
2164 | || type1 == unsigned_short_ ## NAME ## _type_node) \ | |
2165 | return unsignedp ? unsigned_short_ ## NAME ## _type_node \ | |
2166 | : short_ ## NAME ## _type_node; \ | |
2167 | if (type1 == NAME ## _type_node \ | |
2168 | || type1 == unsigned_ ## NAME ## _type_node) \ | |
2169 | return unsignedp ? unsigned_ ## NAME ## _type_node \ | |
2170 | : NAME ## _type_node; \ | |
2171 | if (type1 == long_ ## NAME ## _type_node \ | |
2172 | || type1 == unsigned_long_ ## NAME ## _type_node) \ | |
2173 | return unsignedp ? unsigned_long_ ## NAME ## _type_node \ | |
2174 | : long_ ## NAME ## _type_node; \ | |
2175 | if (type1 == long_long_ ## NAME ## _type_node \ | |
2176 | || type1 == unsigned_long_long_ ## NAME ## _type_node) \ | |
2177 | return unsignedp ? unsigned_long_long_ ## NAME ## _type_node \ | |
2178 | : long_long_ ## NAME ## _type_node; | |
2179 | ||
2180 | #define GIMPLE_FIXED_MODE_TYPES(NAME) \ | |
2181 | if (type1 == NAME ## _type_node \ | |
2182 | || type1 == u ## NAME ## _type_node) \ | |
2183 | return unsignedp ? u ## NAME ## _type_node \ | |
2184 | : NAME ## _type_node; | |
2185 | ||
2186 | #define GIMPLE_FIXED_TYPES_SAT(NAME) \ | |
2187 | if (type1 == sat_ ## short_ ## NAME ## _type_node \ | |
2188 | || type1 == sat_ ## unsigned_short_ ## NAME ## _type_node) \ | |
2189 | return unsignedp ? sat_ ## unsigned_short_ ## NAME ## _type_node \ | |
2190 | : sat_ ## short_ ## NAME ## _type_node; \ | |
2191 | if (type1 == sat_ ## NAME ## _type_node \ | |
2192 | || type1 == sat_ ## unsigned_ ## NAME ## _type_node) \ | |
2193 | return unsignedp ? sat_ ## unsigned_ ## NAME ## _type_node \ | |
2194 | : sat_ ## NAME ## _type_node; \ | |
2195 | if (type1 == sat_ ## long_ ## NAME ## _type_node \ | |
2196 | || type1 == sat_ ## unsigned_long_ ## NAME ## _type_node) \ | |
2197 | return unsignedp ? sat_ ## unsigned_long_ ## NAME ## _type_node \ | |
2198 | : sat_ ## long_ ## NAME ## _type_node; \ | |
2199 | if (type1 == sat_ ## long_long_ ## NAME ## _type_node \ | |
2200 | || type1 == sat_ ## unsigned_long_long_ ## NAME ## _type_node) \ | |
2201 | return unsignedp ? sat_ ## unsigned_long_long_ ## NAME ## _type_node \ | |
2202 | : sat_ ## long_long_ ## NAME ## _type_node; | |
2203 | ||
2204 | #define GIMPLE_FIXED_MODE_TYPES_SAT(NAME) \ | |
2205 | if (type1 == sat_ ## NAME ## _type_node \ | |
2206 | || type1 == sat_ ## u ## NAME ## _type_node) \ | |
2207 | return unsignedp ? sat_ ## u ## NAME ## _type_node \ | |
2208 | : sat_ ## NAME ## _type_node; | |
2209 | ||
2210 | GIMPLE_FIXED_TYPES (fract); | |
2211 | GIMPLE_FIXED_TYPES_SAT (fract); | |
2212 | GIMPLE_FIXED_TYPES (accum); | |
2213 | GIMPLE_FIXED_TYPES_SAT (accum); | |
2214 | ||
2215 | GIMPLE_FIXED_MODE_TYPES (qq); | |
2216 | GIMPLE_FIXED_MODE_TYPES (hq); | |
2217 | GIMPLE_FIXED_MODE_TYPES (sq); | |
2218 | GIMPLE_FIXED_MODE_TYPES (dq); | |
2219 | GIMPLE_FIXED_MODE_TYPES (tq); | |
2220 | GIMPLE_FIXED_MODE_TYPES_SAT (qq); | |
2221 | GIMPLE_FIXED_MODE_TYPES_SAT (hq); | |
2222 | GIMPLE_FIXED_MODE_TYPES_SAT (sq); | |
2223 | GIMPLE_FIXED_MODE_TYPES_SAT (dq); | |
2224 | GIMPLE_FIXED_MODE_TYPES_SAT (tq); | |
2225 | GIMPLE_FIXED_MODE_TYPES (ha); | |
2226 | GIMPLE_FIXED_MODE_TYPES (sa); | |
2227 | GIMPLE_FIXED_MODE_TYPES (da); | |
2228 | GIMPLE_FIXED_MODE_TYPES (ta); | |
2229 | GIMPLE_FIXED_MODE_TYPES_SAT (ha); | |
2230 | GIMPLE_FIXED_MODE_TYPES_SAT (sa); | |
2231 | GIMPLE_FIXED_MODE_TYPES_SAT (da); | |
2232 | GIMPLE_FIXED_MODE_TYPES_SAT (ta); | |
2233 | ||
2234 | /* For ENUMERAL_TYPEs in C++, must check the mode of the types, not | |
2235 | the precision; they have precision set to match their range, but | |
2236 | may use a wider mode to match an ABI. If we change modes, we may | |
2237 | wind up with bad conversions. For INTEGER_TYPEs in C, must check | |
2238 | the precision as well, so as to yield correct results for | |
2239 | bit-field types. C++ does not have these separate bit-field | |
2240 | types, and producing a signed or unsigned variant of an | |
2241 | ENUMERAL_TYPE may cause other problems as well. */ | |
2242 | if (!INTEGRAL_TYPE_P (type) | |
2243 | || TYPE_UNSIGNED (type) == unsignedp) | |
2244 | return type; | |
2245 | ||
2246 | #define TYPE_OK(node) \ | |
2247 | (TYPE_MODE (type) == TYPE_MODE (node) \ | |
2248 | && TYPE_PRECISION (type) == TYPE_PRECISION (node)) | |
2249 | if (TYPE_OK (signed_char_type_node)) | |
2250 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
2251 | if (TYPE_OK (integer_type_node)) | |
2252 | return unsignedp ? unsigned_type_node : integer_type_node; | |
2253 | if (TYPE_OK (short_integer_type_node)) | |
2254 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
2255 | if (TYPE_OK (long_integer_type_node)) | |
2256 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
2257 | if (TYPE_OK (long_long_integer_type_node)) | |
2258 | return (unsignedp | |
2259 | ? long_long_unsigned_type_node | |
2260 | : long_long_integer_type_node); | |
a6766312 KT |
2261 | if (int128_integer_type_node && TYPE_OK (int128_integer_type_node)) |
2262 | return (unsignedp | |
2263 | ? int128_unsigned_type_node | |
2264 | : int128_integer_type_node); | |
d7f09764 DN |
2265 | |
2266 | #if HOST_BITS_PER_WIDE_INT >= 64 | |
2267 | if (TYPE_OK (intTI_type_node)) | |
2268 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
2269 | #endif | |
2270 | if (TYPE_OK (intDI_type_node)) | |
2271 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
2272 | if (TYPE_OK (intSI_type_node)) | |
2273 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
2274 | if (TYPE_OK (intHI_type_node)) | |
2275 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
2276 | if (TYPE_OK (intQI_type_node)) | |
2277 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
2278 | ||
2279 | #undef GIMPLE_FIXED_TYPES | |
2280 | #undef GIMPLE_FIXED_MODE_TYPES | |
2281 | #undef GIMPLE_FIXED_TYPES_SAT | |
2282 | #undef GIMPLE_FIXED_MODE_TYPES_SAT | |
2283 | #undef TYPE_OK | |
2284 | ||
2285 | return build_nonstandard_integer_type (TYPE_PRECISION (type), unsignedp); | |
2286 | } | |
2287 | ||
2288 | ||
2289 | /* Return an unsigned type the same as TYPE in other respects. */ | |
2290 | ||
2291 | tree | |
2292 | gimple_unsigned_type (tree type) | |
2293 | { | |
2294 | return gimple_signed_or_unsigned_type (true, type); | |
2295 | } | |
2296 | ||
2297 | ||
2298 | /* Return a signed type the same as TYPE in other respects. */ | |
2299 | ||
2300 | tree | |
2301 | gimple_signed_type (tree type) | |
2302 | { | |
2303 | return gimple_signed_or_unsigned_type (false, type); | |
2304 | } | |
2305 | ||
2306 | ||
2307 | /* Return the typed-based alias set for T, which may be an expression | |
2308 | or a type. Return -1 if we don't do anything special. */ | |
2309 | ||
2310 | alias_set_type | |
2311 | gimple_get_alias_set (tree t) | |
2312 | { | |
2313 | tree u; | |
2314 | ||
2315 | /* Permit type-punning when accessing a union, provided the access | |
2316 | is directly through the union. For example, this code does not | |
2317 | permit taking the address of a union member and then storing | |
2318 | through it. Even the type-punning allowed here is a GCC | |
2319 | extension, albeit a common and useful one; the C standard says | |
2320 | that such accesses have implementation-defined behavior. */ | |
2321 | for (u = t; | |
2322 | TREE_CODE (u) == COMPONENT_REF || TREE_CODE (u) == ARRAY_REF; | |
2323 | u = TREE_OPERAND (u, 0)) | |
2324 | if (TREE_CODE (u) == COMPONENT_REF | |
2325 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (u, 0))) == UNION_TYPE) | |
2326 | return 0; | |
2327 | ||
2328 | /* That's all the expressions we handle specially. */ | |
2329 | if (!TYPE_P (t)) | |
2330 | return -1; | |
2331 | ||
2332 | /* For convenience, follow the C standard when dealing with | |
2333 | character types. Any object may be accessed via an lvalue that | |
2334 | has character type. */ | |
2335 | if (t == char_type_node | |
2336 | || t == signed_char_type_node | |
2337 | || t == unsigned_char_type_node) | |
2338 | return 0; | |
2339 | ||
2340 | /* Allow aliasing between signed and unsigned variants of the same | |
2341 | type. We treat the signed variant as canonical. */ | |
2342 | if (TREE_CODE (t) == INTEGER_TYPE && TYPE_UNSIGNED (t)) | |
2343 | { | |
2344 | tree t1 = gimple_signed_type (t); | |
2345 | ||
2346 | /* t1 == t can happen for boolean nodes which are always unsigned. */ | |
2347 | if (t1 != t) | |
2348 | return get_alias_set (t1); | |
2349 | } | |
d7f09764 DN |
2350 | |
2351 | return -1; | |
2352 | } | |
2353 | ||
2354 | ||
ccacdf06 RG |
2355 | /* Helper for gimple_ior_addresses_taken_1. */ |
2356 | ||
2357 | static bool | |
2358 | gimple_ior_addresses_taken_1 (gimple stmt ATTRIBUTE_UNUSED, | |
2359 | tree addr, void *data) | |
2360 | { | |
2361 | bitmap addresses_taken = (bitmap)data; | |
2ea9dc64 RG |
2362 | addr = get_base_address (addr); |
2363 | if (addr | |
2364 | && DECL_P (addr)) | |
ccacdf06 RG |
2365 | { |
2366 | bitmap_set_bit (addresses_taken, DECL_UID (addr)); | |
2367 | return true; | |
2368 | } | |
2369 | return false; | |
2370 | } | |
2371 | ||
2372 | /* Set the bit for the uid of all decls that have their address taken | |
2373 | in STMT in the ADDRESSES_TAKEN bitmap. Returns true if there | |
2374 | were any in this stmt. */ | |
2375 | ||
2376 | bool | |
2377 | gimple_ior_addresses_taken (bitmap addresses_taken, gimple stmt) | |
2378 | { | |
2379 | return walk_stmt_load_store_addr_ops (stmt, addresses_taken, NULL, NULL, | |
2380 | gimple_ior_addresses_taken_1); | |
2381 | } | |
2382 | ||
4537ec0c | 2383 | |
25ae5027 DS |
2384 | /* Return TRUE iff stmt is a call to a built-in function. */ |
2385 | ||
2386 | bool | |
2387 | is_gimple_builtin_call (gimple stmt) | |
2388 | { | |
2389 | tree callee; | |
2390 | ||
2391 | if (is_gimple_call (stmt) | |
2392 | && (callee = gimple_call_fndecl (stmt)) | |
2393 | && is_builtin_fn (callee) | |
2394 | && DECL_BUILT_IN_CLASS (callee) == BUILT_IN_NORMAL) | |
2395 | return true; | |
2396 | ||
2397 | return false; | |
2398 | } | |
2399 | ||
3626621a RB |
2400 | /* Return true when STMTs arguments match those of FNDECL. */ |
2401 | ||
2402 | static bool | |
2403 | validate_call (gimple stmt, tree fndecl) | |
2404 | { | |
2405 | tree targs = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); | |
2406 | unsigned nargs = gimple_call_num_args (stmt); | |
2407 | for (unsigned i = 0; i < nargs; ++i) | |
2408 | { | |
2409 | /* Variadic args follow. */ | |
2410 | if (!targs) | |
2411 | return true; | |
2412 | tree arg = gimple_call_arg (stmt, i); | |
2413 | if (INTEGRAL_TYPE_P (TREE_TYPE (arg)) | |
2414 | && INTEGRAL_TYPE_P (TREE_VALUE (targs))) | |
2415 | ; | |
2416 | else if (POINTER_TYPE_P (TREE_TYPE (arg)) | |
2417 | && POINTER_TYPE_P (TREE_VALUE (targs))) | |
2418 | ; | |
2419 | else if (TREE_CODE (TREE_TYPE (arg)) | |
2420 | != TREE_CODE (TREE_VALUE (targs))) | |
2421 | return false; | |
2422 | targs = TREE_CHAIN (targs); | |
2423 | } | |
2424 | if (targs && !VOID_TYPE_P (TREE_VALUE (targs))) | |
2425 | return false; | |
2426 | return true; | |
2427 | } | |
2428 | ||
2429 | /* Return true when STMT is builtins call to CLASS. */ | |
2430 | ||
2431 | bool | |
2432 | gimple_call_builtin_p (gimple stmt, enum built_in_class klass) | |
2433 | { | |
2434 | tree fndecl; | |
2435 | if (is_gimple_call (stmt) | |
2436 | && (fndecl = gimple_call_fndecl (stmt)) != NULL_TREE | |
2437 | && DECL_BUILT_IN_CLASS (fndecl) == klass) | |
2438 | return validate_call (stmt, fndecl); | |
2439 | return false; | |
2440 | } | |
2441 | ||
2442 | /* Return true when STMT is builtins call to CODE of CLASS. */ | |
c54c785d JH |
2443 | |
2444 | bool | |
2445 | gimple_call_builtin_p (gimple stmt, enum built_in_function code) | |
2446 | { | |
2447 | tree fndecl; | |
3626621a RB |
2448 | if (is_gimple_call (stmt) |
2449 | && (fndecl = gimple_call_fndecl (stmt)) != NULL_TREE | |
2450 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
2451 | && DECL_FUNCTION_CODE (fndecl) == code) | |
2452 | return validate_call (stmt, fndecl); | |
2453 | return false; | |
c54c785d JH |
2454 | } |
2455 | ||
edcdea5b NF |
2456 | /* Return true if STMT clobbers memory. STMT is required to be a |
2457 | GIMPLE_ASM. */ | |
2458 | ||
2459 | bool | |
2460 | gimple_asm_clobbers_memory_p (const_gimple stmt) | |
2461 | { | |
2462 | unsigned i; | |
2463 | ||
2464 | for (i = 0; i < gimple_asm_nclobbers (stmt); i++) | |
2465 | { | |
2466 | tree op = gimple_asm_clobber_op (stmt, i); | |
2467 | if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op)), "memory") == 0) | |
2468 | return true; | |
2469 | } | |
2470 | ||
2471 | return false; | |
2472 | } | |
475b8f37 | 2473 | |
80560f95 AM |
2474 | /* Dump bitmap SET (assumed to contain VAR_DECLs) to FILE. */ |
2475 | ||
2476 | void | |
2477 | dump_decl_set (FILE *file, bitmap set) | |
2478 | { | |
2479 | if (set) | |
2480 | { | |
2481 | bitmap_iterator bi; | |
2482 | unsigned i; | |
2483 | ||
2484 | fprintf (file, "{ "); | |
2485 | ||
2486 | EXECUTE_IF_SET_IN_BITMAP (set, 0, i, bi) | |
2487 | { | |
2488 | fprintf (file, "D.%u", i); | |
2489 | fprintf (file, " "); | |
2490 | } | |
2491 | ||
2492 | fprintf (file, "}"); | |
2493 | } | |
2494 | else | |
2495 | fprintf (file, "NIL"); | |
2496 | } | |
7a300452 | 2497 | |
3d9c733e AM |
2498 | /* Return true when CALL is a call stmt that definitely doesn't |
2499 | free any memory or makes it unavailable otherwise. */ | |
2500 | bool | |
2501 | nonfreeing_call_p (gimple call) | |
2502 | { | |
2503 | if (gimple_call_builtin_p (call, BUILT_IN_NORMAL) | |
2504 | && gimple_call_flags (call) & ECF_LEAF) | |
2505 | switch (DECL_FUNCTION_CODE (gimple_call_fndecl (call))) | |
2506 | { | |
2507 | /* Just in case these become ECF_LEAF in the future. */ | |
2508 | case BUILT_IN_FREE: | |
2509 | case BUILT_IN_TM_FREE: | |
2510 | case BUILT_IN_REALLOC: | |
2511 | case BUILT_IN_STACK_RESTORE: | |
2512 | return false; | |
2513 | default: | |
2514 | return true; | |
2515 | } | |
2516 | ||
2517 | return false; | |
2518 | } | |
8fdc414d JL |
2519 | |
2520 | /* Callback for walk_stmt_load_store_ops. | |
2521 | ||
2522 | Return TRUE if OP will dereference the tree stored in DATA, FALSE | |
2523 | otherwise. | |
2524 | ||
2525 | This routine only makes a superficial check for a dereference. Thus | |
2526 | it must only be used if it is safe to return a false negative. */ | |
2527 | static bool | |
2528 | check_loadstore (gimple stmt ATTRIBUTE_UNUSED, tree op, void *data) | |
2529 | { | |
2530 | if ((TREE_CODE (op) == MEM_REF || TREE_CODE (op) == TARGET_MEM_REF) | |
2531 | && operand_equal_p (TREE_OPERAND (op, 0), (tree)data, 0)) | |
2532 | return true; | |
2533 | return false; | |
2534 | } | |
2535 | ||
2536 | /* If OP can be inferred to be non-zero after STMT executes, return true. */ | |
2537 | ||
2538 | bool | |
2539 | infer_nonnull_range (gimple stmt, tree op) | |
2540 | { | |
2541 | /* We can only assume that a pointer dereference will yield | |
2542 | non-NULL if -fdelete-null-pointer-checks is enabled. */ | |
2543 | if (!flag_delete_null_pointer_checks | |
2544 | || !POINTER_TYPE_P (TREE_TYPE (op)) | |
2545 | || gimple_code (stmt) == GIMPLE_ASM) | |
2546 | return false; | |
2547 | ||
2548 | if (walk_stmt_load_store_ops (stmt, (void *)op, | |
2549 | check_loadstore, check_loadstore)) | |
2550 | return true; | |
2551 | ||
2552 | if (is_gimple_call (stmt) && !gimple_call_internal_p (stmt)) | |
2553 | { | |
2554 | tree fntype = gimple_call_fntype (stmt); | |
2555 | tree attrs = TYPE_ATTRIBUTES (fntype); | |
2556 | for (; attrs; attrs = TREE_CHAIN (attrs)) | |
2557 | { | |
2558 | attrs = lookup_attribute ("nonnull", attrs); | |
2559 | ||
2560 | /* If "nonnull" wasn't specified, we know nothing about | |
2561 | the argument. */ | |
2562 | if (attrs == NULL_TREE) | |
2563 | return false; | |
2564 | ||
2565 | /* If "nonnull" applies to all the arguments, then ARG | |
2566 | is non-null if it's in the argument list. */ | |
2567 | if (TREE_VALUE (attrs) == NULL_TREE) | |
2568 | { | |
2569 | for (unsigned int i = 0; i < gimple_call_num_args (stmt); i++) | |
2570 | { | |
2571 | if (operand_equal_p (op, gimple_call_arg (stmt, i), 0) | |
2572 | && POINTER_TYPE_P (TREE_TYPE (gimple_call_arg (stmt, i)))) | |
2573 | return true; | |
2574 | } | |
2575 | return false; | |
2576 | } | |
2577 | ||
2578 | /* Now see if op appears in the nonnull list. */ | |
2579 | for (tree t = TREE_VALUE (attrs); t; t = TREE_CHAIN (t)) | |
2580 | { | |
2581 | int idx = TREE_INT_CST_LOW (TREE_VALUE (t)) - 1; | |
2582 | tree arg = gimple_call_arg (stmt, idx); | |
2583 | if (operand_equal_p (op, arg, 0)) | |
2584 | return true; | |
2585 | } | |
2586 | } | |
2587 | } | |
2588 | ||
2589 | /* If this function is marked as returning non-null, then we can | |
2590 | infer OP is non-null if it is used in the return statement. */ | |
2591 | if (gimple_code (stmt) == GIMPLE_RETURN | |
2592 | && gimple_return_retval (stmt) | |
2593 | && operand_equal_p (gimple_return_retval (stmt), op, 0) | |
2594 | && lookup_attribute ("returns_nonnull", | |
2595 | TYPE_ATTRIBUTES (TREE_TYPE (current_function_decl)))) | |
2596 | return true; | |
2597 | ||
2598 | return false; | |
2599 | } | |
45b0be94 AM |
2600 | |
2601 | /* Compare two case labels. Because the front end should already have | |
2602 | made sure that case ranges do not overlap, it is enough to only compare | |
2603 | the CASE_LOW values of each case label. */ | |
2604 | ||
2605 | static int | |
2606 | compare_case_labels (const void *p1, const void *p2) | |
2607 | { | |
2608 | const_tree const case1 = *(const_tree const*)p1; | |
2609 | const_tree const case2 = *(const_tree const*)p2; | |
2610 | ||
2611 | /* The 'default' case label always goes first. */ | |
2612 | if (!CASE_LOW (case1)) | |
2613 | return -1; | |
2614 | else if (!CASE_LOW (case2)) | |
2615 | return 1; | |
2616 | else | |
2617 | return tree_int_cst_compare (CASE_LOW (case1), CASE_LOW (case2)); | |
2618 | } | |
2619 | ||
2620 | /* Sort the case labels in LABEL_VEC in place in ascending order. */ | |
2621 | ||
2622 | void | |
2623 | sort_case_labels (vec<tree> label_vec) | |
2624 | { | |
2625 | label_vec.qsort (compare_case_labels); | |
2626 | } | |
2627 | \f | |
2628 | /* Prepare a vector of case labels to be used in a GIMPLE_SWITCH statement. | |
2629 | ||
2630 | LABELS is a vector that contains all case labels to look at. | |
2631 | ||
2632 | INDEX_TYPE is the type of the switch index expression. Case labels | |
2633 | in LABELS are discarded if their values are not in the value range | |
2634 | covered by INDEX_TYPE. The remaining case label values are folded | |
2635 | to INDEX_TYPE. | |
2636 | ||
2637 | If a default case exists in LABELS, it is removed from LABELS and | |
2638 | returned in DEFAULT_CASEP. If no default case exists, but the | |
2639 | case labels already cover the whole range of INDEX_TYPE, a default | |
2640 | case is returned pointing to one of the existing case labels. | |
2641 | Otherwise DEFAULT_CASEP is set to NULL_TREE. | |
2642 | ||
2643 | DEFAULT_CASEP may be NULL, in which case the above comment doesn't | |
2644 | apply and no action is taken regardless of whether a default case is | |
2645 | found or not. */ | |
2646 | ||
2647 | void | |
2648 | preprocess_case_label_vec_for_gimple (vec<tree> labels, | |
2649 | tree index_type, | |
2650 | tree *default_casep) | |
2651 | { | |
2652 | tree min_value, max_value; | |
2653 | tree default_case = NULL_TREE; | |
2654 | size_t i, len; | |
2655 | ||
2656 | i = 0; | |
2657 | min_value = TYPE_MIN_VALUE (index_type); | |
2658 | max_value = TYPE_MAX_VALUE (index_type); | |
2659 | while (i < labels.length ()) | |
2660 | { | |
2661 | tree elt = labels[i]; | |
2662 | tree low = CASE_LOW (elt); | |
2663 | tree high = CASE_HIGH (elt); | |
2664 | bool remove_element = FALSE; | |
2665 | ||
2666 | if (low) | |
2667 | { | |
2668 | gcc_checking_assert (TREE_CODE (low) == INTEGER_CST); | |
2669 | gcc_checking_assert (!high || TREE_CODE (high) == INTEGER_CST); | |
2670 | ||
2671 | /* This is a non-default case label, i.e. it has a value. | |
2672 | ||
2673 | See if the case label is reachable within the range of | |
2674 | the index type. Remove out-of-range case values. Turn | |
2675 | case ranges into a canonical form (high > low strictly) | |
2676 | and convert the case label values to the index type. | |
2677 | ||
2678 | NB: The type of gimple_switch_index() may be the promoted | |
2679 | type, but the case labels retain the original type. */ | |
2680 | ||
2681 | if (high) | |
2682 | { | |
2683 | /* This is a case range. Discard empty ranges. | |
2684 | If the bounds or the range are equal, turn this | |
2685 | into a simple (one-value) case. */ | |
2686 | int cmp = tree_int_cst_compare (high, low); | |
2687 | if (cmp < 0) | |
2688 | remove_element = TRUE; | |
2689 | else if (cmp == 0) | |
2690 | high = NULL_TREE; | |
2691 | } | |
2692 | ||
2693 | if (! high) | |
2694 | { | |
2695 | /* If the simple case value is unreachable, ignore it. */ | |
2696 | if ((TREE_CODE (min_value) == INTEGER_CST | |
2697 | && tree_int_cst_compare (low, min_value) < 0) | |
2698 | || (TREE_CODE (max_value) == INTEGER_CST | |
2699 | && tree_int_cst_compare (low, max_value) > 0)) | |
2700 | remove_element = TRUE; | |
2701 | else | |
2702 | low = fold_convert (index_type, low); | |
2703 | } | |
2704 | else | |
2705 | { | |
2706 | /* If the entire case range is unreachable, ignore it. */ | |
2707 | if ((TREE_CODE (min_value) == INTEGER_CST | |
2708 | && tree_int_cst_compare (high, min_value) < 0) | |
2709 | || (TREE_CODE (max_value) == INTEGER_CST | |
2710 | && tree_int_cst_compare (low, max_value) > 0)) | |
2711 | remove_element = TRUE; | |
2712 | else | |
2713 | { | |
2714 | /* If the lower bound is less than the index type's | |
2715 | minimum value, truncate the range bounds. */ | |
2716 | if (TREE_CODE (min_value) == INTEGER_CST | |
2717 | && tree_int_cst_compare (low, min_value) < 0) | |
2718 | low = min_value; | |
2719 | low = fold_convert (index_type, low); | |
2720 | ||
2721 | /* If the upper bound is greater than the index type's | |
2722 | maximum value, truncate the range bounds. */ | |
2723 | if (TREE_CODE (max_value) == INTEGER_CST | |
2724 | && tree_int_cst_compare (high, max_value) > 0) | |
2725 | high = max_value; | |
2726 | high = fold_convert (index_type, high); | |
2727 | ||
2728 | /* We may have folded a case range to a one-value case. */ | |
2729 | if (tree_int_cst_equal (low, high)) | |
2730 | high = NULL_TREE; | |
2731 | } | |
2732 | } | |
2733 | ||
2734 | CASE_LOW (elt) = low; | |
2735 | CASE_HIGH (elt) = high; | |
2736 | } | |
2737 | else | |
2738 | { | |
2739 | gcc_assert (!default_case); | |
2740 | default_case = elt; | |
2741 | /* The default case must be passed separately to the | |
2742 | gimple_build_switch routine. But if DEFAULT_CASEP | |
2743 | is NULL, we do not remove the default case (it would | |
2744 | be completely lost). */ | |
2745 | if (default_casep) | |
2746 | remove_element = TRUE; | |
2747 | } | |
2748 | ||
2749 | if (remove_element) | |
2750 | labels.ordered_remove (i); | |
2751 | else | |
2752 | i++; | |
2753 | } | |
2754 | len = i; | |
2755 | ||
2756 | if (!labels.is_empty ()) | |
2757 | sort_case_labels (labels); | |
2758 | ||
2759 | if (default_casep && !default_case) | |
2760 | { | |
2761 | /* If the switch has no default label, add one, so that we jump | |
2762 | around the switch body. If the labels already cover the whole | |
2763 | range of the switch index_type, add the default label pointing | |
2764 | to one of the existing labels. */ | |
2765 | if (len | |
2766 | && TYPE_MIN_VALUE (index_type) | |
2767 | && TYPE_MAX_VALUE (index_type) | |
2768 | && tree_int_cst_equal (CASE_LOW (labels[0]), | |
2769 | TYPE_MIN_VALUE (index_type))) | |
2770 | { | |
2771 | tree low, high = CASE_HIGH (labels[len - 1]); | |
2772 | if (!high) | |
2773 | high = CASE_LOW (labels[len - 1]); | |
2774 | if (tree_int_cst_equal (high, TYPE_MAX_VALUE (index_type))) | |
2775 | { | |
2776 | for (i = 1; i < len; i++) | |
2777 | { | |
2778 | high = CASE_LOW (labels[i]); | |
2779 | low = CASE_HIGH (labels[i - 1]); | |
2780 | if (!low) | |
2781 | low = CASE_LOW (labels[i - 1]); | |
2782 | if ((TREE_INT_CST_LOW (low) + 1 | |
2783 | != TREE_INT_CST_LOW (high)) | |
2784 | || (TREE_INT_CST_HIGH (low) | |
2785 | + (TREE_INT_CST_LOW (high) == 0) | |
2786 | != TREE_INT_CST_HIGH (high))) | |
2787 | break; | |
2788 | } | |
2789 | if (i == len) | |
2790 | { | |
2791 | tree label = CASE_LABEL (labels[0]); | |
2792 | default_case = build_case_label (NULL_TREE, NULL_TREE, | |
2793 | label); | |
2794 | } | |
2795 | } | |
2796 | } | |
2797 | } | |
2798 | ||
2799 | if (default_casep) | |
2800 | *default_casep = default_case; | |
2801 | } | |
5be5c238 AM |
2802 | |
2803 | /* Set the location of all statements in SEQ to LOC. */ | |
2804 | ||
2805 | void | |
2806 | gimple_seq_set_location (gimple_seq seq, location_t loc) | |
2807 | { | |
2808 | for (gimple_stmt_iterator i = gsi_start (seq); !gsi_end_p (i); gsi_next (&i)) | |
2809 | gimple_set_location (gsi_stmt (i), loc); | |
2810 | } |