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726a989a RB |
1 | /* Gimple IR support functions. |
2 | ||
23a5b65a | 3 | Copyright (C) 2007-2014 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 | 27 | #include "tree.h" |
d8a2d370 DN |
28 | #include "calls.h" |
29 | #include "stmt.h" | |
30 | #include "stor-layout.h" | |
726a989a RB |
31 | #include "hard-reg-set.h" |
32 | #include "basic-block.h" | |
2fb9a547 AM |
33 | #include "tree-ssa-alias.h" |
34 | #include "internal-fn.h" | |
35 | #include "tree-eh.h" | |
36 | #include "gimple-expr.h" | |
37 | #include "is-a.h" | |
726a989a | 38 | #include "gimple.h" |
5be5c238 AM |
39 | #include "gimple-iterator.h" |
40 | #include "gimple-walk.h" | |
18f429e2 | 41 | #include "gimple.h" |
45b0be94 | 42 | #include "gimplify.h" |
726a989a | 43 | #include "diagnostic.h" |
726a989a RB |
44 | #include "value-prof.h" |
45 | #include "flags.h" | |
d7f09764 | 46 | #include "alias.h" |
4537ec0c | 47 | #include "demangle.h" |
0f443ad0 | 48 | #include "langhooks.h" |
377d9792 | 49 | #include "bitmap.h" |
726a989a | 50 | |
d7f09764 | 51 | |
f2c4a81c | 52 | /* All the tuples have their operand vector (if present) at the very bottom |
726a989a RB |
53 | of the structure. Therefore, the offset required to find the |
54 | operands vector the size of the structure minus the size of the 1 | |
55 | element tree array at the end (see gimple_ops). */ | |
f2c4a81c RH |
56 | #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) \ |
57 | (HAS_TREE_OP ? sizeof (struct STRUCT) - sizeof (tree) : 0), | |
6bc7bc14 | 58 | EXPORTED_CONST size_t gimple_ops_offset_[] = { |
f2c4a81c RH |
59 | #include "gsstruct.def" |
60 | }; | |
61 | #undef DEFGSSTRUCT | |
62 | ||
c3284718 | 63 | #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) sizeof (struct STRUCT), |
f2c4a81c RH |
64 | static const size_t gsstruct_code_size[] = { |
65 | #include "gsstruct.def" | |
66 | }; | |
67 | #undef DEFGSSTRUCT | |
68 | ||
69 | #define DEFGSCODE(SYM, NAME, GSSCODE) NAME, | |
70 | const char *const gimple_code_name[] = { | |
71 | #include "gimple.def" | |
72 | }; | |
73 | #undef DEFGSCODE | |
74 | ||
75 | #define DEFGSCODE(SYM, NAME, GSSCODE) GSSCODE, | |
76 | EXPORTED_CONST enum gimple_statement_structure_enum gss_for_code_[] = { | |
726a989a RB |
77 | #include "gimple.def" |
78 | }; | |
79 | #undef DEFGSCODE | |
80 | ||
726a989a RB |
81 | /* Gimple stats. */ |
82 | ||
83 | int gimple_alloc_counts[(int) gimple_alloc_kind_all]; | |
84 | int gimple_alloc_sizes[(int) gimple_alloc_kind_all]; | |
85 | ||
86 | /* Keep in sync with gimple.h:enum gimple_alloc_kind. */ | |
87 | static const char * const gimple_alloc_kind_names[] = { | |
88 | "assignments", | |
89 | "phi nodes", | |
90 | "conditionals", | |
726a989a RB |
91 | "everything else" |
92 | }; | |
93 | ||
726a989a RB |
94 | /* Gimple tuple constructors. |
95 | Note: Any constructor taking a ``gimple_seq'' as a parameter, can | |
96 | be passed a NULL to start with an empty sequence. */ | |
97 | ||
98 | /* Set the code for statement G to CODE. */ | |
99 | ||
100 | static inline void | |
101 | gimple_set_code (gimple g, enum gimple_code code) | |
102 | { | |
daa6e488 | 103 | g->code = code; |
726a989a RB |
104 | } |
105 | ||
726a989a RB |
106 | /* Return the number of bytes needed to hold a GIMPLE statement with |
107 | code CODE. */ | |
108 | ||
f2c4a81c | 109 | static inline size_t |
726a989a RB |
110 | gimple_size (enum gimple_code code) |
111 | { | |
f2c4a81c | 112 | return gsstruct_code_size[gss_for_code (code)]; |
726a989a RB |
113 | } |
114 | ||
726a989a RB |
115 | /* Allocate memory for a GIMPLE statement with code CODE and NUM_OPS |
116 | operands. */ | |
117 | ||
d7f09764 | 118 | gimple |
726a989a RB |
119 | gimple_alloc_stat (enum gimple_code code, unsigned num_ops MEM_STAT_DECL) |
120 | { | |
121 | size_t size; | |
122 | gimple stmt; | |
123 | ||
124 | size = gimple_size (code); | |
125 | if (num_ops > 0) | |
126 | size += sizeof (tree) * (num_ops - 1); | |
127 | ||
7aa6d18a SB |
128 | if (GATHER_STATISTICS) |
129 | { | |
130 | enum gimple_alloc_kind kind = gimple_alloc_kind (code); | |
131 | gimple_alloc_counts[(int) kind]++; | |
132 | gimple_alloc_sizes[(int) kind] += size; | |
133 | } | |
726a989a | 134 | |
daa6e488 | 135 | stmt = ggc_alloc_cleared_gimple_statement_stat (size PASS_MEM_STAT); |
726a989a RB |
136 | gimple_set_code (stmt, code); |
137 | gimple_set_num_ops (stmt, num_ops); | |
138 | ||
139 | /* Do not call gimple_set_modified here as it has other side | |
140 | effects and this tuple is still not completely built. */ | |
daa6e488 | 141 | stmt->modified = 1; |
355a7673 | 142 | gimple_init_singleton (stmt); |
726a989a RB |
143 | |
144 | return stmt; | |
145 | } | |
146 | ||
147 | /* Set SUBCODE to be the code of the expression computed by statement G. */ | |
148 | ||
149 | static inline void | |
150 | gimple_set_subcode (gimple g, unsigned subcode) | |
151 | { | |
152 | /* We only have 16 bits for the RHS code. Assert that we are not | |
153 | overflowing it. */ | |
154 | gcc_assert (subcode < (1 << 16)); | |
daa6e488 | 155 | g->subcode = subcode; |
726a989a RB |
156 | } |
157 | ||
158 | ||
159 | ||
160 | /* Build a tuple with operands. CODE is the statement to build (which | |
7d05cebb | 161 | must be one of the GIMPLE_WITH_OPS tuples). SUBCODE is the subcode |
b8698a0f | 162 | for the new tuple. NUM_OPS is the number of operands to allocate. */ |
726a989a RB |
163 | |
164 | #define gimple_build_with_ops(c, s, n) \ | |
165 | gimple_build_with_ops_stat (c, s, n MEM_STAT_INFO) | |
166 | ||
167 | static gimple | |
b5b8b0ac | 168 | gimple_build_with_ops_stat (enum gimple_code code, unsigned subcode, |
726a989a RB |
169 | unsigned num_ops MEM_STAT_DECL) |
170 | { | |
171 | gimple s = gimple_alloc_stat (code, num_ops PASS_MEM_STAT); | |
172 | gimple_set_subcode (s, subcode); | |
173 | ||
174 | return s; | |
175 | } | |
176 | ||
177 | ||
178 | /* Build a GIMPLE_RETURN statement returning RETVAL. */ | |
179 | ||
180 | gimple | |
181 | gimple_build_return (tree retval) | |
182 | { | |
089d1227 | 183 | gimple s = gimple_build_with_ops (GIMPLE_RETURN, ERROR_MARK, 1); |
726a989a RB |
184 | if (retval) |
185 | gimple_return_set_retval (s, retval); | |
186 | return s; | |
187 | } | |
188 | ||
d086d311 RG |
189 | /* Reset alias information on call S. */ |
190 | ||
191 | void | |
192 | gimple_call_reset_alias_info (gimple s) | |
193 | { | |
194 | if (gimple_call_flags (s) & ECF_CONST) | |
195 | memset (gimple_call_use_set (s), 0, sizeof (struct pt_solution)); | |
196 | else | |
197 | pt_solution_reset (gimple_call_use_set (s)); | |
198 | if (gimple_call_flags (s) & (ECF_CONST|ECF_PURE|ECF_NOVOPS)) | |
199 | memset (gimple_call_clobber_set (s), 0, sizeof (struct pt_solution)); | |
200 | else | |
201 | pt_solution_reset (gimple_call_clobber_set (s)); | |
202 | } | |
203 | ||
21860814 JJ |
204 | /* Helper for gimple_build_call, gimple_build_call_valist, |
205 | gimple_build_call_vec and gimple_build_call_from_tree. Build the basic | |
206 | components of a GIMPLE_CALL statement to function FN with NARGS | |
207 | arguments. */ | |
726a989a RB |
208 | |
209 | static inline gimple | |
210 | gimple_build_call_1 (tree fn, unsigned nargs) | |
211 | { | |
bbbbb16a | 212 | gimple s = gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, nargs + 3); |
7c9577be RG |
213 | if (TREE_CODE (fn) == FUNCTION_DECL) |
214 | fn = build_fold_addr_expr (fn); | |
726a989a | 215 | gimple_set_op (s, 1, fn); |
f20ca725 | 216 | gimple_call_set_fntype (s, TREE_TYPE (TREE_TYPE (fn))); |
d086d311 | 217 | gimple_call_reset_alias_info (s); |
726a989a RB |
218 | return s; |
219 | } | |
220 | ||
221 | ||
222 | /* Build a GIMPLE_CALL statement to function FN with the arguments | |
223 | specified in vector ARGS. */ | |
224 | ||
225 | gimple | |
9771b263 | 226 | gimple_build_call_vec (tree fn, vec<tree> args) |
726a989a RB |
227 | { |
228 | unsigned i; | |
9771b263 | 229 | unsigned nargs = args.length (); |
726a989a RB |
230 | gimple call = gimple_build_call_1 (fn, nargs); |
231 | ||
232 | for (i = 0; i < nargs; i++) | |
9771b263 | 233 | gimple_call_set_arg (call, i, args[i]); |
726a989a RB |
234 | |
235 | return call; | |
236 | } | |
237 | ||
238 | ||
239 | /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of | |
240 | arguments. The ... are the arguments. */ | |
241 | ||
242 | gimple | |
243 | gimple_build_call (tree fn, unsigned nargs, ...) | |
244 | { | |
245 | va_list ap; | |
246 | gimple call; | |
247 | unsigned i; | |
248 | ||
249 | gcc_assert (TREE_CODE (fn) == FUNCTION_DECL || is_gimple_call_addr (fn)); | |
250 | ||
251 | call = gimple_build_call_1 (fn, nargs); | |
252 | ||
253 | va_start (ap, nargs); | |
254 | for (i = 0; i < nargs; i++) | |
255 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
256 | va_end (ap); | |
257 | ||
258 | return call; | |
259 | } | |
260 | ||
261 | ||
21860814 JJ |
262 | /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of |
263 | arguments. AP contains the arguments. */ | |
264 | ||
265 | gimple | |
266 | gimple_build_call_valist (tree fn, unsigned nargs, va_list ap) | |
267 | { | |
268 | gimple call; | |
269 | unsigned i; | |
270 | ||
271 | gcc_assert (TREE_CODE (fn) == FUNCTION_DECL || is_gimple_call_addr (fn)); | |
272 | ||
273 | call = gimple_build_call_1 (fn, nargs); | |
274 | ||
275 | for (i = 0; i < nargs; i++) | |
276 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
277 | ||
278 | return call; | |
279 | } | |
280 | ||
281 | ||
25583c4f RS |
282 | /* Helper for gimple_build_call_internal and gimple_build_call_internal_vec. |
283 | Build the basic components of a GIMPLE_CALL statement to internal | |
284 | function FN with NARGS arguments. */ | |
285 | ||
286 | static inline gimple | |
287 | gimple_build_call_internal_1 (enum internal_fn fn, unsigned nargs) | |
288 | { | |
289 | gimple s = gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, nargs + 3); | |
daa6e488 | 290 | s->subcode |= GF_CALL_INTERNAL; |
25583c4f RS |
291 | gimple_call_set_internal_fn (s, fn); |
292 | gimple_call_reset_alias_info (s); | |
293 | return s; | |
294 | } | |
295 | ||
296 | ||
297 | /* Build a GIMPLE_CALL statement to internal function FN. NARGS is | |
298 | the number of arguments. The ... are the arguments. */ | |
299 | ||
300 | gimple | |
301 | gimple_build_call_internal (enum internal_fn fn, unsigned nargs, ...) | |
302 | { | |
303 | va_list ap; | |
304 | gimple call; | |
305 | unsigned i; | |
306 | ||
307 | call = gimple_build_call_internal_1 (fn, nargs); | |
308 | va_start (ap, nargs); | |
309 | for (i = 0; i < nargs; i++) | |
310 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
311 | va_end (ap); | |
312 | ||
313 | return call; | |
314 | } | |
315 | ||
316 | ||
317 | /* Build a GIMPLE_CALL statement to internal function FN with the arguments | |
318 | specified in vector ARGS. */ | |
319 | ||
320 | gimple | |
9771b263 | 321 | gimple_build_call_internal_vec (enum internal_fn fn, vec<tree> args) |
25583c4f RS |
322 | { |
323 | unsigned i, nargs; | |
324 | gimple call; | |
325 | ||
9771b263 | 326 | nargs = args.length (); |
25583c4f RS |
327 | call = gimple_build_call_internal_1 (fn, nargs); |
328 | for (i = 0; i < nargs; i++) | |
9771b263 | 329 | gimple_call_set_arg (call, i, args[i]); |
25583c4f RS |
330 | |
331 | return call; | |
332 | } | |
333 | ||
334 | ||
726a989a RB |
335 | /* Build a GIMPLE_CALL statement from CALL_EXPR T. Note that T is |
336 | assumed to be in GIMPLE form already. Minimal checking is done of | |
337 | this fact. */ | |
338 | ||
339 | gimple | |
340 | gimple_build_call_from_tree (tree t) | |
341 | { | |
342 | unsigned i, nargs; | |
343 | gimple call; | |
344 | tree fndecl = get_callee_fndecl (t); | |
345 | ||
346 | gcc_assert (TREE_CODE (t) == CALL_EXPR); | |
347 | ||
348 | nargs = call_expr_nargs (t); | |
349 | call = gimple_build_call_1 (fndecl ? fndecl : CALL_EXPR_FN (t), nargs); | |
350 | ||
351 | for (i = 0; i < nargs; i++) | |
352 | gimple_call_set_arg (call, i, CALL_EXPR_ARG (t, i)); | |
353 | ||
354 | gimple_set_block (call, TREE_BLOCK (t)); | |
355 | ||
356 | /* Carry all the CALL_EXPR flags to the new GIMPLE_CALL. */ | |
357 | gimple_call_set_chain (call, CALL_EXPR_STATIC_CHAIN (t)); | |
358 | gimple_call_set_tail (call, CALL_EXPR_TAILCALL (t)); | |
726a989a | 359 | gimple_call_set_return_slot_opt (call, CALL_EXPR_RETURN_SLOT_OPT (t)); |
63d2a353 MM |
360 | if (fndecl |
361 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
13e49da9 TV |
362 | && (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_ALLOCA |
363 | || DECL_FUNCTION_CODE (fndecl) == BUILT_IN_ALLOCA_WITH_ALIGN)) | |
63d2a353 MM |
364 | gimple_call_set_alloca_for_var (call, CALL_ALLOCA_FOR_VAR_P (t)); |
365 | else | |
366 | gimple_call_set_from_thunk (call, CALL_FROM_THUNK_P (t)); | |
726a989a | 367 | gimple_call_set_va_arg_pack (call, CALL_EXPR_VA_ARG_PACK (t)); |
9bb1a81b | 368 | gimple_call_set_nothrow (call, TREE_NOTHROW (t)); |
d665b6e5 | 369 | gimple_set_no_warning (call, TREE_NO_WARNING (t)); |
726a989a RB |
370 | |
371 | return call; | |
372 | } | |
373 | ||
374 | ||
726a989a RB |
375 | /* Build a GIMPLE_ASSIGN statement. |
376 | ||
377 | LHS of the assignment. | |
378 | RHS of the assignment which can be unary or binary. */ | |
379 | ||
380 | gimple | |
381 | gimple_build_assign_stat (tree lhs, tree rhs MEM_STAT_DECL) | |
382 | { | |
383 | enum tree_code subcode; | |
0354c0c7 | 384 | tree op1, op2, op3; |
726a989a | 385 | |
0354c0c7 | 386 | extract_ops_from_tree_1 (rhs, &subcode, &op1, &op2, &op3); |
73804b12 RG |
387 | return gimple_build_assign_with_ops (subcode, lhs, op1, op2, op3 |
388 | PASS_MEM_STAT); | |
726a989a RB |
389 | } |
390 | ||
391 | ||
7d05cebb | 392 | /* Build a GIMPLE_ASSIGN statement with subcode SUBCODE and operands |
726a989a RB |
393 | OP1 and OP2. If OP2 is NULL then SUBCODE must be of class |
394 | GIMPLE_UNARY_RHS or GIMPLE_SINGLE_RHS. */ | |
395 | ||
396 | gimple | |
73804b12 RG |
397 | gimple_build_assign_with_ops (enum tree_code subcode, tree lhs, tree op1, |
398 | tree op2, tree op3 MEM_STAT_DECL) | |
726a989a RB |
399 | { |
400 | unsigned num_ops; | |
401 | gimple p; | |
402 | ||
403 | /* Need 1 operand for LHS and 1 or 2 for the RHS (depending on the | |
404 | code). */ | |
405 | num_ops = get_gimple_rhs_num_ops (subcode) + 1; | |
b8698a0f | 406 | |
b5b8b0ac | 407 | p = gimple_build_with_ops_stat (GIMPLE_ASSIGN, (unsigned)subcode, num_ops |
726a989a RB |
408 | PASS_MEM_STAT); |
409 | gimple_assign_set_lhs (p, lhs); | |
410 | gimple_assign_set_rhs1 (p, op1); | |
411 | if (op2) | |
412 | { | |
413 | gcc_assert (num_ops > 2); | |
414 | gimple_assign_set_rhs2 (p, op2); | |
415 | } | |
416 | ||
0354c0c7 BS |
417 | if (op3) |
418 | { | |
419 | gcc_assert (num_ops > 3); | |
420 | gimple_assign_set_rhs3 (p, op3); | |
421 | } | |
422 | ||
726a989a RB |
423 | return p; |
424 | } | |
425 | ||
73804b12 RG |
426 | gimple |
427 | gimple_build_assign_with_ops (enum tree_code subcode, tree lhs, tree op1, | |
428 | tree op2 MEM_STAT_DECL) | |
429 | { | |
430 | return gimple_build_assign_with_ops (subcode, lhs, op1, op2, NULL_TREE | |
431 | PASS_MEM_STAT); | |
432 | } | |
433 | ||
726a989a | 434 | |
726a989a RB |
435 | /* Build a GIMPLE_COND statement. |
436 | ||
437 | PRED is the condition used to compare LHS and the RHS. | |
438 | T_LABEL is the label to jump to if the condition is true. | |
439 | F_LABEL is the label to jump to otherwise. */ | |
440 | ||
441 | gimple | |
442 | gimple_build_cond (enum tree_code pred_code, tree lhs, tree rhs, | |
443 | tree t_label, tree f_label) | |
444 | { | |
445 | gimple p; | |
446 | ||
447 | gcc_assert (TREE_CODE_CLASS (pred_code) == tcc_comparison); | |
448 | p = gimple_build_with_ops (GIMPLE_COND, pred_code, 4); | |
449 | gimple_cond_set_lhs (p, lhs); | |
450 | gimple_cond_set_rhs (p, rhs); | |
451 | gimple_cond_set_true_label (p, t_label); | |
452 | gimple_cond_set_false_label (p, f_label); | |
453 | return p; | |
454 | } | |
455 | ||
726a989a RB |
456 | /* Build a GIMPLE_COND statement from the conditional expression tree |
457 | COND. T_LABEL and F_LABEL are as in gimple_build_cond. */ | |
458 | ||
459 | gimple | |
460 | gimple_build_cond_from_tree (tree cond, tree t_label, tree f_label) | |
461 | { | |
462 | enum tree_code code; | |
463 | tree lhs, rhs; | |
464 | ||
465 | gimple_cond_get_ops_from_tree (cond, &code, &lhs, &rhs); | |
466 | return gimple_build_cond (code, lhs, rhs, t_label, f_label); | |
467 | } | |
468 | ||
469 | /* Set code, lhs, and rhs of a GIMPLE_COND from a suitable | |
470 | boolean expression tree COND. */ | |
471 | ||
472 | void | |
473 | gimple_cond_set_condition_from_tree (gimple stmt, tree cond) | |
474 | { | |
475 | enum tree_code code; | |
476 | tree lhs, rhs; | |
477 | ||
478 | gimple_cond_get_ops_from_tree (cond, &code, &lhs, &rhs); | |
479 | gimple_cond_set_condition (stmt, code, lhs, rhs); | |
480 | } | |
481 | ||
482 | /* Build a GIMPLE_LABEL statement for LABEL. */ | |
483 | ||
484 | gimple | |
485 | gimple_build_label (tree label) | |
486 | { | |
bbbbb16a | 487 | gimple p = gimple_build_with_ops (GIMPLE_LABEL, ERROR_MARK, 1); |
726a989a RB |
488 | gimple_label_set_label (p, label); |
489 | return p; | |
490 | } | |
491 | ||
492 | /* Build a GIMPLE_GOTO statement to label DEST. */ | |
493 | ||
494 | gimple | |
495 | gimple_build_goto (tree dest) | |
496 | { | |
bbbbb16a | 497 | gimple p = gimple_build_with_ops (GIMPLE_GOTO, ERROR_MARK, 1); |
726a989a RB |
498 | gimple_goto_set_dest (p, dest); |
499 | return p; | |
500 | } | |
501 | ||
502 | ||
503 | /* Build a GIMPLE_NOP statement. */ | |
504 | ||
b8698a0f | 505 | gimple |
726a989a RB |
506 | gimple_build_nop (void) |
507 | { | |
508 | return gimple_alloc (GIMPLE_NOP, 0); | |
509 | } | |
510 | ||
511 | ||
512 | /* Build a GIMPLE_BIND statement. | |
513 | VARS are the variables in BODY. | |
514 | BLOCK is the containing block. */ | |
515 | ||
516 | gimple | |
517 | gimple_build_bind (tree vars, gimple_seq body, tree block) | |
518 | { | |
519 | gimple p = gimple_alloc (GIMPLE_BIND, 0); | |
520 | gimple_bind_set_vars (p, vars); | |
521 | if (body) | |
522 | gimple_bind_set_body (p, body); | |
523 | if (block) | |
524 | gimple_bind_set_block (p, block); | |
525 | return p; | |
526 | } | |
527 | ||
528 | /* Helper function to set the simple fields of a asm stmt. | |
529 | ||
530 | STRING is a pointer to a string that is the asm blocks assembly code. | |
531 | NINPUT is the number of register inputs. | |
532 | NOUTPUT is the number of register outputs. | |
533 | NCLOBBERS is the number of clobbered registers. | |
534 | */ | |
535 | ||
536 | static inline gimple | |
b8698a0f | 537 | gimple_build_asm_1 (const char *string, unsigned ninputs, unsigned noutputs, |
1c384bf1 | 538 | unsigned nclobbers, unsigned nlabels) |
726a989a | 539 | { |
daa6e488 | 540 | gimple_statement_asm *p; |
726a989a RB |
541 | int size = strlen (string); |
542 | ||
1c384bf1 RH |
543 | /* ASMs with labels cannot have outputs. This should have been |
544 | enforced by the front end. */ | |
545 | gcc_assert (nlabels == 0 || noutputs == 0); | |
546 | ||
7de90a6c | 547 | p = as_a <gimple_statement_asm *> ( |
daa6e488 DM |
548 | gimple_build_with_ops (GIMPLE_ASM, ERROR_MARK, |
549 | ninputs + noutputs + nclobbers + nlabels)); | |
726a989a | 550 | |
daa6e488 DM |
551 | p->ni = ninputs; |
552 | p->no = noutputs; | |
553 | p->nc = nclobbers; | |
554 | p->nl = nlabels; | |
555 | p->string = ggc_alloc_string (string, size); | |
726a989a | 556 | |
7aa6d18a SB |
557 | if (GATHER_STATISTICS) |
558 | gimple_alloc_sizes[(int) gimple_alloc_kind (GIMPLE_ASM)] += size; | |
b8698a0f | 559 | |
726a989a RB |
560 | return p; |
561 | } | |
562 | ||
563 | /* Build a GIMPLE_ASM statement. | |
564 | ||
565 | STRING is the assembly code. | |
566 | NINPUT is the number of register inputs. | |
567 | NOUTPUT is the number of register outputs. | |
568 | NCLOBBERS is the number of clobbered registers. | |
569 | INPUTS is a vector of the input register parameters. | |
570 | OUTPUTS is a vector of the output register parameters. | |
1c384bf1 RH |
571 | CLOBBERS is a vector of the clobbered register parameters. |
572 | LABELS is a vector of destination labels. */ | |
726a989a RB |
573 | |
574 | gimple | |
9771b263 DN |
575 | gimple_build_asm_vec (const char *string, vec<tree, va_gc> *inputs, |
576 | vec<tree, va_gc> *outputs, vec<tree, va_gc> *clobbers, | |
577 | vec<tree, va_gc> *labels) | |
726a989a RB |
578 | { |
579 | gimple p; | |
580 | unsigned i; | |
581 | ||
582 | p = gimple_build_asm_1 (string, | |
9771b263 DN |
583 | vec_safe_length (inputs), |
584 | vec_safe_length (outputs), | |
585 | vec_safe_length (clobbers), | |
586 | vec_safe_length (labels)); | |
b8698a0f | 587 | |
9771b263 DN |
588 | for (i = 0; i < vec_safe_length (inputs); i++) |
589 | gimple_asm_set_input_op (p, i, (*inputs)[i]); | |
726a989a | 590 | |
9771b263 DN |
591 | for (i = 0; i < vec_safe_length (outputs); i++) |
592 | gimple_asm_set_output_op (p, i, (*outputs)[i]); | |
726a989a | 593 | |
9771b263 DN |
594 | for (i = 0; i < vec_safe_length (clobbers); i++) |
595 | gimple_asm_set_clobber_op (p, i, (*clobbers)[i]); | |
b8698a0f | 596 | |
9771b263 DN |
597 | for (i = 0; i < vec_safe_length (labels); i++) |
598 | gimple_asm_set_label_op (p, i, (*labels)[i]); | |
b8698a0f | 599 | |
726a989a RB |
600 | return p; |
601 | } | |
602 | ||
603 | /* Build a GIMPLE_CATCH statement. | |
604 | ||
605 | TYPES are the catch types. | |
606 | HANDLER is the exception handler. */ | |
607 | ||
608 | gimple | |
609 | gimple_build_catch (tree types, gimple_seq handler) | |
610 | { | |
611 | gimple p = gimple_alloc (GIMPLE_CATCH, 0); | |
612 | gimple_catch_set_types (p, types); | |
613 | if (handler) | |
614 | gimple_catch_set_handler (p, handler); | |
615 | ||
616 | return p; | |
617 | } | |
618 | ||
619 | /* Build a GIMPLE_EH_FILTER statement. | |
620 | ||
621 | TYPES are the filter's types. | |
622 | FAILURE is the filter's failure action. */ | |
623 | ||
624 | gimple | |
625 | gimple_build_eh_filter (tree types, gimple_seq failure) | |
626 | { | |
627 | gimple p = gimple_alloc (GIMPLE_EH_FILTER, 0); | |
628 | gimple_eh_filter_set_types (p, types); | |
629 | if (failure) | |
630 | gimple_eh_filter_set_failure (p, failure); | |
631 | ||
632 | return p; | |
633 | } | |
634 | ||
1d65f45c RH |
635 | /* Build a GIMPLE_EH_MUST_NOT_THROW statement. */ |
636 | ||
637 | gimple | |
638 | gimple_build_eh_must_not_throw (tree decl) | |
639 | { | |
786f715d | 640 | gimple p = gimple_alloc (GIMPLE_EH_MUST_NOT_THROW, 0); |
1d65f45c RH |
641 | |
642 | gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); | |
643 | gcc_assert (flags_from_decl_or_type (decl) & ECF_NORETURN); | |
d7f09764 | 644 | gimple_eh_must_not_throw_set_fndecl (p, decl); |
1d65f45c RH |
645 | |
646 | return p; | |
647 | } | |
648 | ||
0a35513e AH |
649 | /* Build a GIMPLE_EH_ELSE statement. */ |
650 | ||
651 | gimple | |
652 | gimple_build_eh_else (gimple_seq n_body, gimple_seq e_body) | |
653 | { | |
654 | gimple p = gimple_alloc (GIMPLE_EH_ELSE, 0); | |
655 | gimple_eh_else_set_n_body (p, n_body); | |
656 | gimple_eh_else_set_e_body (p, e_body); | |
657 | return p; | |
658 | } | |
659 | ||
726a989a RB |
660 | /* Build a GIMPLE_TRY statement. |
661 | ||
662 | EVAL is the expression to evaluate. | |
663 | CLEANUP is the cleanup expression. | |
664 | KIND is either GIMPLE_TRY_CATCH or GIMPLE_TRY_FINALLY depending on | |
665 | whether this is a try/catch or a try/finally respectively. */ | |
666 | ||
daa6e488 | 667 | gimple_statement_try * |
726a989a RB |
668 | gimple_build_try (gimple_seq eval, gimple_seq cleanup, |
669 | enum gimple_try_flags kind) | |
670 | { | |
daa6e488 | 671 | gimple_statement_try *p; |
726a989a RB |
672 | |
673 | gcc_assert (kind == GIMPLE_TRY_CATCH || kind == GIMPLE_TRY_FINALLY); | |
7de90a6c | 674 | p = as_a <gimple_statement_try *> (gimple_alloc (GIMPLE_TRY, 0)); |
726a989a RB |
675 | gimple_set_subcode (p, kind); |
676 | if (eval) | |
677 | gimple_try_set_eval (p, eval); | |
678 | if (cleanup) | |
679 | gimple_try_set_cleanup (p, cleanup); | |
680 | ||
681 | return p; | |
682 | } | |
683 | ||
684 | /* Construct a GIMPLE_WITH_CLEANUP_EXPR statement. | |
685 | ||
686 | CLEANUP is the cleanup expression. */ | |
687 | ||
688 | gimple | |
689 | gimple_build_wce (gimple_seq cleanup) | |
690 | { | |
691 | gimple p = gimple_alloc (GIMPLE_WITH_CLEANUP_EXPR, 0); | |
692 | if (cleanup) | |
693 | gimple_wce_set_cleanup (p, cleanup); | |
694 | ||
695 | return p; | |
696 | } | |
697 | ||
698 | ||
1d65f45c | 699 | /* Build a GIMPLE_RESX statement. */ |
726a989a RB |
700 | |
701 | gimple | |
702 | gimple_build_resx (int region) | |
703 | { | |
9b95612e | 704 | gimple_statement_resx *p = |
7de90a6c | 705 | as_a <gimple_statement_resx *> ( |
daa6e488 DM |
706 | gimple_build_with_ops (GIMPLE_RESX, ERROR_MARK, 0)); |
707 | p->region = region; | |
726a989a RB |
708 | return p; |
709 | } | |
710 | ||
711 | ||
712 | /* The helper for constructing a gimple switch statement. | |
713 | INDEX is the switch's index. | |
714 | NLABELS is the number of labels in the switch excluding the default. | |
715 | DEFAULT_LABEL is the default label for the switch statement. */ | |
716 | ||
b8698a0f | 717 | gimple |
1d65f45c | 718 | gimple_build_switch_nlabels (unsigned nlabels, tree index, tree default_label) |
726a989a RB |
719 | { |
720 | /* nlabels + 1 default label + 1 index. */ | |
fd8d363e | 721 | gcc_checking_assert (default_label); |
bbbbb16a | 722 | gimple p = gimple_build_with_ops (GIMPLE_SWITCH, ERROR_MARK, |
fd8d363e | 723 | 1 + 1 + nlabels); |
726a989a | 724 | gimple_switch_set_index (p, index); |
fd8d363e | 725 | gimple_switch_set_default_label (p, default_label); |
726a989a RB |
726 | return p; |
727 | } | |
728 | ||
726a989a RB |
729 | /* Build a GIMPLE_SWITCH statement. |
730 | ||
731 | INDEX is the switch's index. | |
732 | DEFAULT_LABEL is the default label | |
733 | ARGS is a vector of labels excluding the default. */ | |
734 | ||
735 | gimple | |
9771b263 | 736 | gimple_build_switch (tree index, tree default_label, vec<tree> args) |
726a989a | 737 | { |
9771b263 | 738 | unsigned i, nlabels = args.length (); |
fd8d363e | 739 | |
1d65f45c | 740 | gimple p = gimple_build_switch_nlabels (nlabels, index, default_label); |
726a989a | 741 | |
1d65f45c | 742 | /* Copy the labels from the vector to the switch statement. */ |
1d65f45c | 743 | for (i = 0; i < nlabels; i++) |
9771b263 | 744 | gimple_switch_set_label (p, i + 1, args[i]); |
726a989a RB |
745 | |
746 | return p; | |
747 | } | |
748 | ||
1d65f45c RH |
749 | /* Build a GIMPLE_EH_DISPATCH statement. */ |
750 | ||
751 | gimple | |
752 | gimple_build_eh_dispatch (int region) | |
753 | { | |
9b95612e | 754 | gimple_statement_eh_dispatch *p = |
7de90a6c | 755 | as_a <gimple_statement_eh_dispatch *> ( |
daa6e488 DM |
756 | gimple_build_with_ops (GIMPLE_EH_DISPATCH, ERROR_MARK, 0)); |
757 | p->region = region; | |
1d65f45c RH |
758 | return p; |
759 | } | |
726a989a | 760 | |
b5b8b0ac AO |
761 | /* Build a new GIMPLE_DEBUG_BIND statement. |
762 | ||
763 | VAR is bound to VALUE; block and location are taken from STMT. */ | |
764 | ||
765 | gimple | |
766 | gimple_build_debug_bind_stat (tree var, tree value, gimple stmt MEM_STAT_DECL) | |
767 | { | |
768 | gimple p = gimple_build_with_ops_stat (GIMPLE_DEBUG, | |
769 | (unsigned)GIMPLE_DEBUG_BIND, 2 | |
770 | PASS_MEM_STAT); | |
771 | ||
772 | gimple_debug_bind_set_var (p, var); | |
773 | gimple_debug_bind_set_value (p, value); | |
774 | if (stmt) | |
5368224f | 775 | gimple_set_location (p, gimple_location (stmt)); |
b5b8b0ac AO |
776 | |
777 | return p; | |
778 | } | |
779 | ||
780 | ||
ddb555ed JJ |
781 | /* Build a new GIMPLE_DEBUG_SOURCE_BIND statement. |
782 | ||
783 | VAR is bound to VALUE; block and location are taken from STMT. */ | |
784 | ||
785 | gimple | |
786 | gimple_build_debug_source_bind_stat (tree var, tree value, | |
787 | gimple stmt MEM_STAT_DECL) | |
788 | { | |
789 | gimple p = gimple_build_with_ops_stat (GIMPLE_DEBUG, | |
790 | (unsigned)GIMPLE_DEBUG_SOURCE_BIND, 2 | |
791 | PASS_MEM_STAT); | |
792 | ||
793 | gimple_debug_source_bind_set_var (p, var); | |
794 | gimple_debug_source_bind_set_value (p, value); | |
795 | if (stmt) | |
5368224f | 796 | gimple_set_location (p, gimple_location (stmt)); |
ddb555ed JJ |
797 | |
798 | return p; | |
799 | } | |
800 | ||
801 | ||
726a989a RB |
802 | /* Build a GIMPLE_OMP_CRITICAL statement. |
803 | ||
804 | BODY is the sequence of statements for which only one thread can execute. | |
805 | NAME is optional identifier for this critical block. */ | |
806 | ||
b8698a0f | 807 | gimple |
726a989a RB |
808 | gimple_build_omp_critical (gimple_seq body, tree name) |
809 | { | |
810 | gimple p = gimple_alloc (GIMPLE_OMP_CRITICAL, 0); | |
811 | gimple_omp_critical_set_name (p, name); | |
812 | if (body) | |
813 | gimple_omp_set_body (p, body); | |
814 | ||
815 | return p; | |
816 | } | |
817 | ||
818 | /* Build a GIMPLE_OMP_FOR statement. | |
819 | ||
820 | BODY is sequence of statements inside the for loop. | |
74bf76ed | 821 | KIND is the `for' variant. |
b8698a0f | 822 | CLAUSES, are any of the OMP loop construct's clauses: private, firstprivate, |
726a989a RB |
823 | lastprivate, reductions, ordered, schedule, and nowait. |
824 | COLLAPSE is the collapse count. | |
825 | PRE_BODY is the sequence of statements that are loop invariant. */ | |
826 | ||
827 | gimple | |
74bf76ed | 828 | gimple_build_omp_for (gimple_seq body, int kind, tree clauses, size_t collapse, |
726a989a RB |
829 | gimple_seq pre_body) |
830 | { | |
daa6e488 | 831 | gimple_statement_omp_for *p = |
7de90a6c | 832 | as_a <gimple_statement_omp_for *> (gimple_alloc (GIMPLE_OMP_FOR, 0)); |
726a989a RB |
833 | if (body) |
834 | gimple_omp_set_body (p, body); | |
835 | gimple_omp_for_set_clauses (p, clauses); | |
74bf76ed | 836 | gimple_omp_for_set_kind (p, kind); |
daa6e488 DM |
837 | p->collapse = collapse; |
838 | p->iter = static_cast <struct gimple_omp_for_iter *> ( | |
839 | ggc_internal_cleared_vec_alloc_stat (sizeof (*p->iter), | |
840 | collapse MEM_STAT_INFO)); | |
841 | ||
726a989a RB |
842 | if (pre_body) |
843 | gimple_omp_for_set_pre_body (p, pre_body); | |
844 | ||
845 | return p; | |
846 | } | |
847 | ||
848 | ||
849 | /* Build a GIMPLE_OMP_PARALLEL statement. | |
850 | ||
851 | BODY is sequence of statements which are executed in parallel. | |
852 | CLAUSES, are the OMP parallel construct's clauses. | |
853 | CHILD_FN is the function created for the parallel threads to execute. | |
854 | DATA_ARG are the shared data argument(s). */ | |
855 | ||
b8698a0f L |
856 | gimple |
857 | gimple_build_omp_parallel (gimple_seq body, tree clauses, tree child_fn, | |
726a989a RB |
858 | tree data_arg) |
859 | { | |
860 | gimple p = gimple_alloc (GIMPLE_OMP_PARALLEL, 0); | |
861 | if (body) | |
862 | gimple_omp_set_body (p, body); | |
863 | gimple_omp_parallel_set_clauses (p, clauses); | |
864 | gimple_omp_parallel_set_child_fn (p, child_fn); | |
865 | gimple_omp_parallel_set_data_arg (p, data_arg); | |
866 | ||
867 | return p; | |
868 | } | |
869 | ||
870 | ||
871 | /* Build a GIMPLE_OMP_TASK statement. | |
872 | ||
873 | BODY is sequence of statements which are executed by the explicit task. | |
874 | CLAUSES, are the OMP parallel construct's clauses. | |
875 | CHILD_FN is the function created for the parallel threads to execute. | |
876 | DATA_ARG are the shared data argument(s). | |
877 | COPY_FN is the optional function for firstprivate initialization. | |
878 | ARG_SIZE and ARG_ALIGN are size and alignment of the data block. */ | |
879 | ||
b8698a0f | 880 | gimple |
726a989a RB |
881 | gimple_build_omp_task (gimple_seq body, tree clauses, tree child_fn, |
882 | tree data_arg, tree copy_fn, tree arg_size, | |
883 | tree arg_align) | |
884 | { | |
885 | gimple p = gimple_alloc (GIMPLE_OMP_TASK, 0); | |
886 | if (body) | |
887 | gimple_omp_set_body (p, body); | |
888 | gimple_omp_task_set_clauses (p, clauses); | |
889 | gimple_omp_task_set_child_fn (p, child_fn); | |
890 | gimple_omp_task_set_data_arg (p, data_arg); | |
891 | gimple_omp_task_set_copy_fn (p, copy_fn); | |
892 | gimple_omp_task_set_arg_size (p, arg_size); | |
893 | gimple_omp_task_set_arg_align (p, arg_align); | |
894 | ||
895 | return p; | |
896 | } | |
897 | ||
898 | ||
899 | /* Build a GIMPLE_OMP_SECTION statement for a sections statement. | |
900 | ||
901 | BODY is the sequence of statements in the section. */ | |
902 | ||
903 | gimple | |
904 | gimple_build_omp_section (gimple_seq body) | |
905 | { | |
906 | gimple p = gimple_alloc (GIMPLE_OMP_SECTION, 0); | |
907 | if (body) | |
908 | gimple_omp_set_body (p, body); | |
909 | ||
910 | return p; | |
911 | } | |
912 | ||
913 | ||
914 | /* Build a GIMPLE_OMP_MASTER statement. | |
915 | ||
916 | BODY is the sequence of statements to be executed by just the master. */ | |
917 | ||
b8698a0f | 918 | gimple |
726a989a RB |
919 | gimple_build_omp_master (gimple_seq body) |
920 | { | |
921 | gimple p = gimple_alloc (GIMPLE_OMP_MASTER, 0); | |
922 | if (body) | |
923 | gimple_omp_set_body (p, body); | |
924 | ||
925 | return p; | |
926 | } | |
927 | ||
928 | ||
acf0174b JJ |
929 | /* Build a GIMPLE_OMP_TASKGROUP statement. |
930 | ||
931 | BODY is the sequence of statements to be executed by the taskgroup | |
932 | construct. */ | |
933 | ||
934 | gimple | |
935 | gimple_build_omp_taskgroup (gimple_seq body) | |
936 | { | |
937 | gimple p = gimple_alloc (GIMPLE_OMP_TASKGROUP, 0); | |
938 | if (body) | |
939 | gimple_omp_set_body (p, body); | |
940 | ||
941 | return p; | |
942 | } | |
943 | ||
944 | ||
726a989a RB |
945 | /* Build a GIMPLE_OMP_CONTINUE statement. |
946 | ||
947 | CONTROL_DEF is the definition of the control variable. | |
948 | CONTROL_USE is the use of the control variable. */ | |
949 | ||
b8698a0f | 950 | gimple |
726a989a RB |
951 | gimple_build_omp_continue (tree control_def, tree control_use) |
952 | { | |
953 | gimple p = gimple_alloc (GIMPLE_OMP_CONTINUE, 0); | |
954 | gimple_omp_continue_set_control_def (p, control_def); | |
955 | gimple_omp_continue_set_control_use (p, control_use); | |
956 | return p; | |
957 | } | |
958 | ||
959 | /* Build a GIMPLE_OMP_ORDERED statement. | |
960 | ||
961 | BODY is the sequence of statements inside a loop that will executed in | |
962 | sequence. */ | |
963 | ||
b8698a0f | 964 | gimple |
726a989a RB |
965 | gimple_build_omp_ordered (gimple_seq body) |
966 | { | |
967 | gimple p = gimple_alloc (GIMPLE_OMP_ORDERED, 0); | |
968 | if (body) | |
969 | gimple_omp_set_body (p, body); | |
970 | ||
971 | return p; | |
972 | } | |
973 | ||
974 | ||
975 | /* Build a GIMPLE_OMP_RETURN statement. | |
976 | WAIT_P is true if this is a non-waiting return. */ | |
977 | ||
b8698a0f | 978 | gimple |
726a989a RB |
979 | gimple_build_omp_return (bool wait_p) |
980 | { | |
981 | gimple p = gimple_alloc (GIMPLE_OMP_RETURN, 0); | |
982 | if (wait_p) | |
983 | gimple_omp_return_set_nowait (p); | |
984 | ||
985 | return p; | |
986 | } | |
987 | ||
988 | ||
989 | /* Build a GIMPLE_OMP_SECTIONS statement. | |
990 | ||
991 | BODY is a sequence of section statements. | |
992 | CLAUSES are any of the OMP sections contsruct's clauses: private, | |
993 | firstprivate, lastprivate, reduction, and nowait. */ | |
994 | ||
b8698a0f | 995 | gimple |
726a989a RB |
996 | gimple_build_omp_sections (gimple_seq body, tree clauses) |
997 | { | |
998 | gimple p = gimple_alloc (GIMPLE_OMP_SECTIONS, 0); | |
999 | if (body) | |
1000 | gimple_omp_set_body (p, body); | |
1001 | gimple_omp_sections_set_clauses (p, clauses); | |
1002 | ||
1003 | return p; | |
1004 | } | |
1005 | ||
1006 | ||
1007 | /* Build a GIMPLE_OMP_SECTIONS_SWITCH. */ | |
1008 | ||
1009 | gimple | |
1010 | gimple_build_omp_sections_switch (void) | |
1011 | { | |
1012 | return gimple_alloc (GIMPLE_OMP_SECTIONS_SWITCH, 0); | |
1013 | } | |
1014 | ||
1015 | ||
1016 | /* Build a GIMPLE_OMP_SINGLE statement. | |
1017 | ||
1018 | BODY is the sequence of statements that will be executed once. | |
1019 | CLAUSES are any of the OMP single construct's clauses: private, firstprivate, | |
1020 | copyprivate, nowait. */ | |
1021 | ||
b8698a0f | 1022 | gimple |
726a989a RB |
1023 | gimple_build_omp_single (gimple_seq body, tree clauses) |
1024 | { | |
1025 | gimple p = gimple_alloc (GIMPLE_OMP_SINGLE, 0); | |
1026 | if (body) | |
1027 | gimple_omp_set_body (p, body); | |
1028 | gimple_omp_single_set_clauses (p, clauses); | |
1029 | ||
1030 | return p; | |
1031 | } | |
1032 | ||
1033 | ||
acf0174b JJ |
1034 | /* Build a GIMPLE_OMP_TARGET statement. |
1035 | ||
1036 | BODY is the sequence of statements that will be executed. | |
1037 | CLAUSES are any of the OMP target construct's clauses. */ | |
1038 | ||
1039 | gimple | |
1040 | gimple_build_omp_target (gimple_seq body, int kind, tree clauses) | |
1041 | { | |
1042 | gimple p = gimple_alloc (GIMPLE_OMP_TARGET, 0); | |
1043 | if (body) | |
1044 | gimple_omp_set_body (p, body); | |
1045 | gimple_omp_target_set_clauses (p, clauses); | |
1046 | gimple_omp_target_set_kind (p, kind); | |
1047 | ||
1048 | return p; | |
1049 | } | |
1050 | ||
1051 | ||
1052 | /* Build a GIMPLE_OMP_TEAMS statement. | |
1053 | ||
1054 | BODY is the sequence of statements that will be executed. | |
1055 | CLAUSES are any of the OMP teams construct's clauses. */ | |
1056 | ||
1057 | gimple | |
1058 | gimple_build_omp_teams (gimple_seq body, tree clauses) | |
1059 | { | |
1060 | gimple p = gimple_alloc (GIMPLE_OMP_TEAMS, 0); | |
1061 | if (body) | |
1062 | gimple_omp_set_body (p, body); | |
1063 | gimple_omp_teams_set_clauses (p, clauses); | |
1064 | ||
1065 | return p; | |
1066 | } | |
1067 | ||
1068 | ||
726a989a RB |
1069 | /* Build a GIMPLE_OMP_ATOMIC_LOAD statement. */ |
1070 | ||
1071 | gimple | |
1072 | gimple_build_omp_atomic_load (tree lhs, tree rhs) | |
1073 | { | |
1074 | gimple p = gimple_alloc (GIMPLE_OMP_ATOMIC_LOAD, 0); | |
1075 | gimple_omp_atomic_load_set_lhs (p, lhs); | |
1076 | gimple_omp_atomic_load_set_rhs (p, rhs); | |
1077 | return p; | |
1078 | } | |
1079 | ||
1080 | /* Build a GIMPLE_OMP_ATOMIC_STORE statement. | |
1081 | ||
1082 | VAL is the value we are storing. */ | |
1083 | ||
1084 | gimple | |
1085 | gimple_build_omp_atomic_store (tree val) | |
1086 | { | |
1087 | gimple p = gimple_alloc (GIMPLE_OMP_ATOMIC_STORE, 0); | |
1088 | gimple_omp_atomic_store_set_val (p, val); | |
1089 | return p; | |
1090 | } | |
1091 | ||
0a35513e AH |
1092 | /* Build a GIMPLE_TRANSACTION statement. */ |
1093 | ||
1094 | gimple | |
1095 | gimple_build_transaction (gimple_seq body, tree label) | |
1096 | { | |
1097 | gimple p = gimple_alloc (GIMPLE_TRANSACTION, 0); | |
1098 | gimple_transaction_set_body (p, body); | |
1099 | gimple_transaction_set_label (p, label); | |
1100 | return p; | |
1101 | } | |
1102 | ||
726a989a RB |
1103 | /* Build a GIMPLE_PREDICT statement. PREDICT is one of the predictors from |
1104 | predict.def, OUTCOME is NOT_TAKEN or TAKEN. */ | |
1105 | ||
1106 | gimple | |
1107 | gimple_build_predict (enum br_predictor predictor, enum prediction outcome) | |
1108 | { | |
1109 | gimple p = gimple_alloc (GIMPLE_PREDICT, 0); | |
1110 | /* Ensure all the predictors fit into the lower bits of the subcode. */ | |
e0c68ce9 | 1111 | gcc_assert ((int) END_PREDICTORS <= GF_PREDICT_TAKEN); |
726a989a RB |
1112 | gimple_predict_set_predictor (p, predictor); |
1113 | gimple_predict_set_outcome (p, outcome); | |
1114 | return p; | |
1115 | } | |
1116 | ||
cea094ed | 1117 | #if defined ENABLE_GIMPLE_CHECKING |
726a989a RB |
1118 | /* Complain of a gimple type mismatch and die. */ |
1119 | ||
1120 | void | |
1121 | gimple_check_failed (const_gimple gs, const char *file, int line, | |
1122 | const char *function, enum gimple_code code, | |
1123 | enum tree_code subcode) | |
1124 | { | |
1125 | internal_error ("gimple check: expected %s(%s), have %s(%s) in %s, at %s:%d", | |
1126 | gimple_code_name[code], | |
5806f481 | 1127 | get_tree_code_name (subcode), |
726a989a | 1128 | gimple_code_name[gimple_code (gs)], |
daa6e488 DM |
1129 | gs->subcode > 0 |
1130 | ? get_tree_code_name ((enum tree_code) gs->subcode) | |
726a989a RB |
1131 | : "", |
1132 | function, trim_filename (file), line); | |
1133 | } | |
726a989a RB |
1134 | #endif /* ENABLE_GIMPLE_CHECKING */ |
1135 | ||
1136 | ||
726a989a RB |
1137 | /* Link gimple statement GS to the end of the sequence *SEQ_P. If |
1138 | *SEQ_P is NULL, a new sequence is allocated. */ | |
1139 | ||
1140 | void | |
1141 | gimple_seq_add_stmt (gimple_seq *seq_p, gimple gs) | |
1142 | { | |
1143 | gimple_stmt_iterator si; | |
726a989a RB |
1144 | if (gs == NULL) |
1145 | return; | |
1146 | ||
726a989a RB |
1147 | si = gsi_last (*seq_p); |
1148 | gsi_insert_after (&si, gs, GSI_NEW_STMT); | |
1149 | } | |
1150 | ||
45b0be94 AM |
1151 | /* Link gimple statement GS to the end of the sequence *SEQ_P. If |
1152 | *SEQ_P is NULL, a new sequence is allocated. This function is | |
1153 | similar to gimple_seq_add_stmt, but does not scan the operands. | |
1154 | During gimplification, we need to manipulate statement sequences | |
1155 | before the def/use vectors have been constructed. */ | |
1156 | ||
1157 | void | |
1158 | gimple_seq_add_stmt_without_update (gimple_seq *seq_p, gimple gs) | |
1159 | { | |
1160 | gimple_stmt_iterator si; | |
1161 | ||
1162 | if (gs == NULL) | |
1163 | return; | |
1164 | ||
1165 | si = gsi_last (*seq_p); | |
1166 | gsi_insert_after_without_update (&si, gs, GSI_NEW_STMT); | |
1167 | } | |
726a989a RB |
1168 | |
1169 | /* Append sequence SRC to the end of sequence *DST_P. If *DST_P is | |
1170 | NULL, a new sequence is allocated. */ | |
1171 | ||
1172 | void | |
1173 | gimple_seq_add_seq (gimple_seq *dst_p, gimple_seq src) | |
1174 | { | |
1175 | gimple_stmt_iterator si; | |
726a989a RB |
1176 | if (src == NULL) |
1177 | return; | |
1178 | ||
726a989a RB |
1179 | si = gsi_last (*dst_p); |
1180 | gsi_insert_seq_after (&si, src, GSI_NEW_STMT); | |
1181 | } | |
1182 | ||
45b0be94 AM |
1183 | /* Determine whether to assign a location to the statement GS. */ |
1184 | ||
1185 | static bool | |
1186 | should_carry_location_p (gimple gs) | |
1187 | { | |
1188 | /* Don't emit a line note for a label. We particularly don't want to | |
1189 | emit one for the break label, since it doesn't actually correspond | |
1190 | to the beginning of the loop/switch. */ | |
1191 | if (gimple_code (gs) == GIMPLE_LABEL) | |
1192 | return false; | |
1193 | ||
1194 | return true; | |
1195 | } | |
1196 | ||
1197 | /* Set the location for gimple statement GS to LOCATION. */ | |
1198 | ||
1199 | static void | |
1200 | annotate_one_with_location (gimple gs, location_t location) | |
1201 | { | |
1202 | if (!gimple_has_location (gs) | |
1203 | && !gimple_do_not_emit_location_p (gs) | |
1204 | && should_carry_location_p (gs)) | |
1205 | gimple_set_location (gs, location); | |
1206 | } | |
1207 | ||
1208 | /* Set LOCATION for all the statements after iterator GSI in sequence | |
1209 | SEQ. If GSI is pointing to the end of the sequence, start with the | |
1210 | first statement in SEQ. */ | |
1211 | ||
1212 | void | |
1213 | annotate_all_with_location_after (gimple_seq seq, gimple_stmt_iterator gsi, | |
1214 | location_t location) | |
1215 | { | |
1216 | if (gsi_end_p (gsi)) | |
1217 | gsi = gsi_start (seq); | |
1218 | else | |
1219 | gsi_next (&gsi); | |
1220 | ||
1221 | for (; !gsi_end_p (gsi); gsi_next (&gsi)) | |
1222 | annotate_one_with_location (gsi_stmt (gsi), location); | |
1223 | } | |
1224 | ||
1225 | /* Set the location for all the statements in a sequence STMT_P to LOCATION. */ | |
1226 | ||
1227 | void | |
1228 | annotate_all_with_location (gimple_seq stmt_p, location_t location) | |
1229 | { | |
1230 | gimple_stmt_iterator i; | |
1231 | ||
1232 | if (gimple_seq_empty_p (stmt_p)) | |
1233 | return; | |
1234 | ||
1235 | for (i = gsi_start (stmt_p); !gsi_end_p (i); gsi_next (&i)) | |
1236 | { | |
1237 | gimple gs = gsi_stmt (i); | |
1238 | annotate_one_with_location (gs, location); | |
1239 | } | |
1240 | } | |
726a989a RB |
1241 | |
1242 | /* Helper function of empty_body_p. Return true if STMT is an empty | |
1243 | statement. */ | |
1244 | ||
1245 | static bool | |
1246 | empty_stmt_p (gimple stmt) | |
1247 | { | |
1248 | if (gimple_code (stmt) == GIMPLE_NOP) | |
1249 | return true; | |
1250 | if (gimple_code (stmt) == GIMPLE_BIND) | |
1251 | return empty_body_p (gimple_bind_body (stmt)); | |
1252 | return false; | |
1253 | } | |
1254 | ||
1255 | ||
1256 | /* Return true if BODY contains nothing but empty statements. */ | |
1257 | ||
1258 | bool | |
1259 | empty_body_p (gimple_seq body) | |
1260 | { | |
1261 | gimple_stmt_iterator i; | |
1262 | ||
726a989a RB |
1263 | if (gimple_seq_empty_p (body)) |
1264 | return true; | |
1265 | for (i = gsi_start (body); !gsi_end_p (i); gsi_next (&i)) | |
b5b8b0ac AO |
1266 | if (!empty_stmt_p (gsi_stmt (i)) |
1267 | && !is_gimple_debug (gsi_stmt (i))) | |
726a989a RB |
1268 | return false; |
1269 | ||
1270 | return true; | |
1271 | } | |
1272 | ||
1273 | ||
1274 | /* Perform a deep copy of sequence SRC and return the result. */ | |
1275 | ||
1276 | gimple_seq | |
1277 | gimple_seq_copy (gimple_seq src) | |
1278 | { | |
1279 | gimple_stmt_iterator gsi; | |
355a7673 | 1280 | gimple_seq new_seq = NULL; |
726a989a RB |
1281 | gimple stmt; |
1282 | ||
1283 | for (gsi = gsi_start (src); !gsi_end_p (gsi); gsi_next (&gsi)) | |
1284 | { | |
1285 | stmt = gimple_copy (gsi_stmt (gsi)); | |
82d6e6fc | 1286 | gimple_seq_add_stmt (&new_seq, stmt); |
726a989a RB |
1287 | } |
1288 | ||
82d6e6fc | 1289 | return new_seq; |
726a989a RB |
1290 | } |
1291 | ||
1292 | ||
726a989a | 1293 | |
25583c4f RS |
1294 | /* Return true if calls C1 and C2 are known to go to the same function. */ |
1295 | ||
1296 | bool | |
1297 | gimple_call_same_target_p (const_gimple c1, const_gimple c2) | |
1298 | { | |
1299 | if (gimple_call_internal_p (c1)) | |
1300 | return (gimple_call_internal_p (c2) | |
1301 | && gimple_call_internal_fn (c1) == gimple_call_internal_fn (c2)); | |
1302 | else | |
1303 | return (gimple_call_fn (c1) == gimple_call_fn (c2) | |
1304 | || (gimple_call_fndecl (c1) | |
1305 | && gimple_call_fndecl (c1) == gimple_call_fndecl (c2))); | |
1306 | } | |
1307 | ||
726a989a RB |
1308 | /* Detect flags from a GIMPLE_CALL. This is just like |
1309 | call_expr_flags, but for gimple tuples. */ | |
1310 | ||
1311 | int | |
1312 | gimple_call_flags (const_gimple stmt) | |
1313 | { | |
1314 | int flags; | |
1315 | tree decl = gimple_call_fndecl (stmt); | |
726a989a RB |
1316 | |
1317 | if (decl) | |
1318 | flags = flags_from_decl_or_type (decl); | |
25583c4f RS |
1319 | else if (gimple_call_internal_p (stmt)) |
1320 | flags = internal_fn_flags (gimple_call_internal_fn (stmt)); | |
726a989a | 1321 | else |
97e03fa1 | 1322 | flags = flags_from_decl_or_type (gimple_call_fntype (stmt)); |
726a989a | 1323 | |
daa6e488 | 1324 | if (stmt->subcode & GF_CALL_NOTHROW) |
9bb1a81b JM |
1325 | flags |= ECF_NOTHROW; |
1326 | ||
726a989a RB |
1327 | return flags; |
1328 | } | |
1329 | ||
25583c4f RS |
1330 | /* Return the "fn spec" string for call STMT. */ |
1331 | ||
1332 | static tree | |
1333 | gimple_call_fnspec (const_gimple stmt) | |
1334 | { | |
1335 | tree type, attr; | |
1336 | ||
1337 | type = gimple_call_fntype (stmt); | |
1338 | if (!type) | |
1339 | return NULL_TREE; | |
1340 | ||
1341 | attr = lookup_attribute ("fn spec", TYPE_ATTRIBUTES (type)); | |
1342 | if (!attr) | |
1343 | return NULL_TREE; | |
1344 | ||
1345 | return TREE_VALUE (TREE_VALUE (attr)); | |
1346 | } | |
1347 | ||
0b7b376d RG |
1348 | /* Detects argument flags for argument number ARG on call STMT. */ |
1349 | ||
1350 | int | |
1351 | gimple_call_arg_flags (const_gimple stmt, unsigned arg) | |
1352 | { | |
25583c4f | 1353 | tree attr = gimple_call_fnspec (stmt); |
0b7b376d | 1354 | |
25583c4f | 1355 | if (!attr || 1 + arg >= (unsigned) TREE_STRING_LENGTH (attr)) |
0b7b376d RG |
1356 | return 0; |
1357 | ||
1358 | switch (TREE_STRING_POINTER (attr)[1 + arg]) | |
1359 | { | |
1360 | case 'x': | |
1361 | case 'X': | |
1362 | return EAF_UNUSED; | |
1363 | ||
1364 | case 'R': | |
1365 | return EAF_DIRECT | EAF_NOCLOBBER | EAF_NOESCAPE; | |
1366 | ||
1367 | case 'r': | |
1368 | return EAF_NOCLOBBER | EAF_NOESCAPE; | |
1369 | ||
1370 | case 'W': | |
1371 | return EAF_DIRECT | EAF_NOESCAPE; | |
1372 | ||
1373 | case 'w': | |
1374 | return EAF_NOESCAPE; | |
1375 | ||
1376 | case '.': | |
1377 | default: | |
1378 | return 0; | |
1379 | } | |
1380 | } | |
1381 | ||
1382 | /* Detects return flags for the call STMT. */ | |
1383 | ||
1384 | int | |
1385 | gimple_call_return_flags (const_gimple stmt) | |
1386 | { | |
25583c4f | 1387 | tree attr; |
0b7b376d RG |
1388 | |
1389 | if (gimple_call_flags (stmt) & ECF_MALLOC) | |
1390 | return ERF_NOALIAS; | |
1391 | ||
25583c4f RS |
1392 | attr = gimple_call_fnspec (stmt); |
1393 | if (!attr || TREE_STRING_LENGTH (attr) < 1) | |
0b7b376d RG |
1394 | return 0; |
1395 | ||
1396 | switch (TREE_STRING_POINTER (attr)[0]) | |
1397 | { | |
1398 | case '1': | |
1399 | case '2': | |
1400 | case '3': | |
1401 | case '4': | |
1402 | return ERF_RETURNS_ARG | (TREE_STRING_POINTER (attr)[0] - '1'); | |
1403 | ||
1404 | case 'm': | |
1405 | return ERF_NOALIAS; | |
1406 | ||
1407 | case '.': | |
1408 | default: | |
1409 | return 0; | |
1410 | } | |
1411 | } | |
726a989a | 1412 | |
3dbe9454 | 1413 | |
726a989a RB |
1414 | /* Return true if GS is a copy assignment. */ |
1415 | ||
1416 | bool | |
1417 | gimple_assign_copy_p (gimple gs) | |
1418 | { | |
3dbe9454 RG |
1419 | return (gimple_assign_single_p (gs) |
1420 | && is_gimple_val (gimple_op (gs, 1))); | |
726a989a RB |
1421 | } |
1422 | ||
1423 | ||
1424 | /* Return true if GS is a SSA_NAME copy assignment. */ | |
1425 | ||
1426 | bool | |
1427 | gimple_assign_ssa_name_copy_p (gimple gs) | |
1428 | { | |
3dbe9454 | 1429 | return (gimple_assign_single_p (gs) |
726a989a RB |
1430 | && TREE_CODE (gimple_assign_lhs (gs)) == SSA_NAME |
1431 | && TREE_CODE (gimple_assign_rhs1 (gs)) == SSA_NAME); | |
1432 | } | |
1433 | ||
1434 | ||
726a989a RB |
1435 | /* Return true if GS is an assignment with a unary RHS, but the |
1436 | operator has no effect on the assigned value. The logic is adapted | |
1437 | from STRIP_NOPS. This predicate is intended to be used in tuplifying | |
1438 | instances in which STRIP_NOPS was previously applied to the RHS of | |
1439 | an assignment. | |
1440 | ||
1441 | NOTE: In the use cases that led to the creation of this function | |
1442 | and of gimple_assign_single_p, it is typical to test for either | |
1443 | condition and to proceed in the same manner. In each case, the | |
1444 | assigned value is represented by the single RHS operand of the | |
1445 | assignment. I suspect there may be cases where gimple_assign_copy_p, | |
1446 | gimple_assign_single_p, or equivalent logic is used where a similar | |
1447 | treatment of unary NOPs is appropriate. */ | |
b8698a0f | 1448 | |
726a989a RB |
1449 | bool |
1450 | gimple_assign_unary_nop_p (gimple gs) | |
1451 | { | |
3dbe9454 | 1452 | return (is_gimple_assign (gs) |
1a87cf0c | 1453 | && (CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (gs)) |
726a989a RB |
1454 | || gimple_assign_rhs_code (gs) == NON_LVALUE_EXPR) |
1455 | && gimple_assign_rhs1 (gs) != error_mark_node | |
1456 | && (TYPE_MODE (TREE_TYPE (gimple_assign_lhs (gs))) | |
1457 | == TYPE_MODE (TREE_TYPE (gimple_assign_rhs1 (gs))))); | |
1458 | } | |
1459 | ||
1460 | /* Set BB to be the basic block holding G. */ | |
1461 | ||
1462 | void | |
1463 | gimple_set_bb (gimple stmt, basic_block bb) | |
1464 | { | |
daa6e488 | 1465 | stmt->bb = bb; |
726a989a | 1466 | |
45b62594 RB |
1467 | if (gimple_code (stmt) != GIMPLE_LABEL) |
1468 | return; | |
1469 | ||
726a989a RB |
1470 | /* If the statement is a label, add the label to block-to-labels map |
1471 | so that we can speed up edge creation for GIMPLE_GOTOs. */ | |
45b62594 | 1472 | if (cfun->cfg) |
726a989a RB |
1473 | { |
1474 | tree t; | |
1475 | int uid; | |
1476 | ||
1477 | t = gimple_label_label (stmt); | |
1478 | uid = LABEL_DECL_UID (t); | |
1479 | if (uid == -1) | |
1480 | { | |
99729d91 DM |
1481 | unsigned old_len = |
1482 | vec_safe_length (label_to_block_map_for_fn (cfun)); | |
726a989a RB |
1483 | LABEL_DECL_UID (t) = uid = cfun->cfg->last_label_uid++; |
1484 | if (old_len <= (unsigned) uid) | |
1485 | { | |
5006671f | 1486 | unsigned new_len = 3 * uid / 2 + 1; |
726a989a | 1487 | |
99729d91 DM |
1488 | vec_safe_grow_cleared (label_to_block_map_for_fn (cfun), |
1489 | new_len); | |
726a989a RB |
1490 | } |
1491 | } | |
1492 | ||
99729d91 | 1493 | (*label_to_block_map_for_fn (cfun))[uid] = bb; |
726a989a RB |
1494 | } |
1495 | } | |
1496 | ||
1497 | ||
726a989a RB |
1498 | /* Modify the RHS of the assignment pointed-to by GSI using the |
1499 | operands in the expression tree EXPR. | |
1500 | ||
1501 | NOTE: The statement pointed-to by GSI may be reallocated if it | |
1502 | did not have enough operand slots. | |
1503 | ||
1504 | This function is useful to convert an existing tree expression into | |
1505 | the flat representation used for the RHS of a GIMPLE assignment. | |
1506 | It will reallocate memory as needed to expand or shrink the number | |
1507 | of operand slots needed to represent EXPR. | |
1508 | ||
1509 | NOTE: If you find yourself building a tree and then calling this | |
1510 | function, you are most certainly doing it the slow way. It is much | |
1511 | better to build a new assignment or to use the function | |
1512 | gimple_assign_set_rhs_with_ops, which does not require an | |
1513 | expression tree to be built. */ | |
1514 | ||
1515 | void | |
1516 | gimple_assign_set_rhs_from_tree (gimple_stmt_iterator *gsi, tree expr) | |
1517 | { | |
1518 | enum tree_code subcode; | |
0354c0c7 | 1519 | tree op1, op2, op3; |
726a989a | 1520 | |
0354c0c7 BS |
1521 | extract_ops_from_tree_1 (expr, &subcode, &op1, &op2, &op3); |
1522 | gimple_assign_set_rhs_with_ops_1 (gsi, subcode, op1, op2, op3); | |
726a989a RB |
1523 | } |
1524 | ||
1525 | ||
1526 | /* Set the RHS of assignment statement pointed-to by GSI to CODE with | |
0354c0c7 | 1527 | operands OP1, OP2 and OP3. |
726a989a RB |
1528 | |
1529 | NOTE: The statement pointed-to by GSI may be reallocated if it | |
1530 | did not have enough operand slots. */ | |
1531 | ||
1532 | void | |
0354c0c7 BS |
1533 | gimple_assign_set_rhs_with_ops_1 (gimple_stmt_iterator *gsi, enum tree_code code, |
1534 | tree op1, tree op2, tree op3) | |
726a989a RB |
1535 | { |
1536 | unsigned new_rhs_ops = get_gimple_rhs_num_ops (code); | |
1537 | gimple stmt = gsi_stmt (*gsi); | |
1538 | ||
1539 | /* If the new CODE needs more operands, allocate a new statement. */ | |
1540 | if (gimple_num_ops (stmt) < new_rhs_ops + 1) | |
1541 | { | |
1542 | tree lhs = gimple_assign_lhs (stmt); | |
1543 | gimple new_stmt = gimple_alloc (gimple_code (stmt), new_rhs_ops + 1); | |
1544 | memcpy (new_stmt, stmt, gimple_size (gimple_code (stmt))); | |
355a7673 | 1545 | gimple_init_singleton (new_stmt); |
726a989a RB |
1546 | gsi_replace (gsi, new_stmt, true); |
1547 | stmt = new_stmt; | |
1548 | ||
1549 | /* The LHS needs to be reset as this also changes the SSA name | |
1550 | on the LHS. */ | |
1551 | gimple_assign_set_lhs (stmt, lhs); | |
1552 | } | |
1553 | ||
1554 | gimple_set_num_ops (stmt, new_rhs_ops + 1); | |
1555 | gimple_set_subcode (stmt, code); | |
1556 | gimple_assign_set_rhs1 (stmt, op1); | |
1557 | if (new_rhs_ops > 1) | |
1558 | gimple_assign_set_rhs2 (stmt, op2); | |
0354c0c7 BS |
1559 | if (new_rhs_ops > 2) |
1560 | gimple_assign_set_rhs3 (stmt, op3); | |
726a989a RB |
1561 | } |
1562 | ||
1563 | ||
1564 | /* Return the LHS of a statement that performs an assignment, | |
1565 | either a GIMPLE_ASSIGN or a GIMPLE_CALL. Returns NULL_TREE | |
1566 | for a call to a function that returns no value, or for a | |
1567 | statement other than an assignment or a call. */ | |
1568 | ||
1569 | tree | |
1570 | gimple_get_lhs (const_gimple stmt) | |
1571 | { | |
e0c68ce9 | 1572 | enum gimple_code code = gimple_code (stmt); |
726a989a RB |
1573 | |
1574 | if (code == GIMPLE_ASSIGN) | |
1575 | return gimple_assign_lhs (stmt); | |
1576 | else if (code == GIMPLE_CALL) | |
1577 | return gimple_call_lhs (stmt); | |
1578 | else | |
1579 | return NULL_TREE; | |
1580 | } | |
1581 | ||
1582 | ||
1583 | /* Set the LHS of a statement that performs an assignment, | |
1584 | either a GIMPLE_ASSIGN or a GIMPLE_CALL. */ | |
1585 | ||
1586 | void | |
1587 | gimple_set_lhs (gimple stmt, tree lhs) | |
1588 | { | |
e0c68ce9 | 1589 | enum gimple_code code = gimple_code (stmt); |
726a989a RB |
1590 | |
1591 | if (code == GIMPLE_ASSIGN) | |
1592 | gimple_assign_set_lhs (stmt, lhs); | |
1593 | else if (code == GIMPLE_CALL) | |
1594 | gimple_call_set_lhs (stmt, lhs); | |
1595 | else | |
c3284718 | 1596 | gcc_unreachable (); |
726a989a RB |
1597 | } |
1598 | ||
1599 | ||
1600 | /* Return a deep copy of statement STMT. All the operands from STMT | |
1601 | are reallocated and copied using unshare_expr. The DEF, USE, VDEF | |
355a7673 MM |
1602 | and VUSE operand arrays are set to empty in the new copy. The new |
1603 | copy isn't part of any sequence. */ | |
726a989a RB |
1604 | |
1605 | gimple | |
1606 | gimple_copy (gimple stmt) | |
1607 | { | |
1608 | enum gimple_code code = gimple_code (stmt); | |
1609 | unsigned num_ops = gimple_num_ops (stmt); | |
1610 | gimple copy = gimple_alloc (code, num_ops); | |
1611 | unsigned i; | |
1612 | ||
1613 | /* Shallow copy all the fields from STMT. */ | |
1614 | memcpy (copy, stmt, gimple_size (code)); | |
355a7673 | 1615 | gimple_init_singleton (copy); |
726a989a RB |
1616 | |
1617 | /* If STMT has sub-statements, deep-copy them as well. */ | |
1618 | if (gimple_has_substatements (stmt)) | |
1619 | { | |
1620 | gimple_seq new_seq; | |
1621 | tree t; | |
1622 | ||
1623 | switch (gimple_code (stmt)) | |
1624 | { | |
1625 | case GIMPLE_BIND: | |
1626 | new_seq = gimple_seq_copy (gimple_bind_body (stmt)); | |
1627 | gimple_bind_set_body (copy, new_seq); | |
1628 | gimple_bind_set_vars (copy, unshare_expr (gimple_bind_vars (stmt))); | |
1629 | gimple_bind_set_block (copy, gimple_bind_block (stmt)); | |
1630 | break; | |
1631 | ||
1632 | case GIMPLE_CATCH: | |
1633 | new_seq = gimple_seq_copy (gimple_catch_handler (stmt)); | |
1634 | gimple_catch_set_handler (copy, new_seq); | |
1635 | t = unshare_expr (gimple_catch_types (stmt)); | |
1636 | gimple_catch_set_types (copy, t); | |
1637 | break; | |
1638 | ||
1639 | case GIMPLE_EH_FILTER: | |
1640 | new_seq = gimple_seq_copy (gimple_eh_filter_failure (stmt)); | |
1641 | gimple_eh_filter_set_failure (copy, new_seq); | |
1642 | t = unshare_expr (gimple_eh_filter_types (stmt)); | |
1643 | gimple_eh_filter_set_types (copy, t); | |
1644 | break; | |
1645 | ||
0a35513e AH |
1646 | case GIMPLE_EH_ELSE: |
1647 | new_seq = gimple_seq_copy (gimple_eh_else_n_body (stmt)); | |
1648 | gimple_eh_else_set_n_body (copy, new_seq); | |
1649 | new_seq = gimple_seq_copy (gimple_eh_else_e_body (stmt)); | |
1650 | gimple_eh_else_set_e_body (copy, new_seq); | |
1651 | break; | |
1652 | ||
726a989a RB |
1653 | case GIMPLE_TRY: |
1654 | new_seq = gimple_seq_copy (gimple_try_eval (stmt)); | |
1655 | gimple_try_set_eval (copy, new_seq); | |
1656 | new_seq = gimple_seq_copy (gimple_try_cleanup (stmt)); | |
1657 | gimple_try_set_cleanup (copy, new_seq); | |
1658 | break; | |
1659 | ||
1660 | case GIMPLE_OMP_FOR: | |
1661 | new_seq = gimple_seq_copy (gimple_omp_for_pre_body (stmt)); | |
1662 | gimple_omp_for_set_pre_body (copy, new_seq); | |
1663 | t = unshare_expr (gimple_omp_for_clauses (stmt)); | |
1664 | gimple_omp_for_set_clauses (copy, t); | |
daa6e488 DM |
1665 | { |
1666 | gimple_statement_omp_for *omp_for_copy = | |
7de90a6c | 1667 | as_a <gimple_statement_omp_for *> (copy); |
daa6e488 DM |
1668 | omp_for_copy->iter = |
1669 | static_cast <struct gimple_omp_for_iter *> ( | |
1670 | ggc_internal_vec_alloc_stat (sizeof (struct gimple_omp_for_iter), | |
1671 | gimple_omp_for_collapse (stmt) | |
1672 | MEM_STAT_INFO)); | |
1673 | } | |
726a989a RB |
1674 | for (i = 0; i < gimple_omp_for_collapse (stmt); i++) |
1675 | { | |
1676 | gimple_omp_for_set_cond (copy, i, | |
1677 | gimple_omp_for_cond (stmt, i)); | |
1678 | gimple_omp_for_set_index (copy, i, | |
1679 | gimple_omp_for_index (stmt, i)); | |
1680 | t = unshare_expr (gimple_omp_for_initial (stmt, i)); | |
1681 | gimple_omp_for_set_initial (copy, i, t); | |
1682 | t = unshare_expr (gimple_omp_for_final (stmt, i)); | |
1683 | gimple_omp_for_set_final (copy, i, t); | |
1684 | t = unshare_expr (gimple_omp_for_incr (stmt, i)); | |
1685 | gimple_omp_for_set_incr (copy, i, t); | |
1686 | } | |
1687 | goto copy_omp_body; | |
1688 | ||
1689 | case GIMPLE_OMP_PARALLEL: | |
1690 | t = unshare_expr (gimple_omp_parallel_clauses (stmt)); | |
1691 | gimple_omp_parallel_set_clauses (copy, t); | |
1692 | t = unshare_expr (gimple_omp_parallel_child_fn (stmt)); | |
1693 | gimple_omp_parallel_set_child_fn (copy, t); | |
1694 | t = unshare_expr (gimple_omp_parallel_data_arg (stmt)); | |
1695 | gimple_omp_parallel_set_data_arg (copy, t); | |
1696 | goto copy_omp_body; | |
1697 | ||
1698 | case GIMPLE_OMP_TASK: | |
1699 | t = unshare_expr (gimple_omp_task_clauses (stmt)); | |
1700 | gimple_omp_task_set_clauses (copy, t); | |
1701 | t = unshare_expr (gimple_omp_task_child_fn (stmt)); | |
1702 | gimple_omp_task_set_child_fn (copy, t); | |
1703 | t = unshare_expr (gimple_omp_task_data_arg (stmt)); | |
1704 | gimple_omp_task_set_data_arg (copy, t); | |
1705 | t = unshare_expr (gimple_omp_task_copy_fn (stmt)); | |
1706 | gimple_omp_task_set_copy_fn (copy, t); | |
1707 | t = unshare_expr (gimple_omp_task_arg_size (stmt)); | |
1708 | gimple_omp_task_set_arg_size (copy, t); | |
1709 | t = unshare_expr (gimple_omp_task_arg_align (stmt)); | |
1710 | gimple_omp_task_set_arg_align (copy, t); | |
1711 | goto copy_omp_body; | |
1712 | ||
1713 | case GIMPLE_OMP_CRITICAL: | |
1714 | t = unshare_expr (gimple_omp_critical_name (stmt)); | |
1715 | gimple_omp_critical_set_name (copy, t); | |
1716 | goto copy_omp_body; | |
1717 | ||
1718 | case GIMPLE_OMP_SECTIONS: | |
1719 | t = unshare_expr (gimple_omp_sections_clauses (stmt)); | |
1720 | gimple_omp_sections_set_clauses (copy, t); | |
1721 | t = unshare_expr (gimple_omp_sections_control (stmt)); | |
1722 | gimple_omp_sections_set_control (copy, t); | |
1723 | /* FALLTHRU */ | |
1724 | ||
1725 | case GIMPLE_OMP_SINGLE: | |
acf0174b JJ |
1726 | case GIMPLE_OMP_TARGET: |
1727 | case GIMPLE_OMP_TEAMS: | |
726a989a RB |
1728 | case GIMPLE_OMP_SECTION: |
1729 | case GIMPLE_OMP_MASTER: | |
acf0174b | 1730 | case GIMPLE_OMP_TASKGROUP: |
726a989a RB |
1731 | case GIMPLE_OMP_ORDERED: |
1732 | copy_omp_body: | |
1733 | new_seq = gimple_seq_copy (gimple_omp_body (stmt)); | |
1734 | gimple_omp_set_body (copy, new_seq); | |
1735 | break; | |
1736 | ||
0a35513e AH |
1737 | case GIMPLE_TRANSACTION: |
1738 | new_seq = gimple_seq_copy (gimple_transaction_body (stmt)); | |
1739 | gimple_transaction_set_body (copy, new_seq); | |
1740 | break; | |
1741 | ||
726a989a RB |
1742 | case GIMPLE_WITH_CLEANUP_EXPR: |
1743 | new_seq = gimple_seq_copy (gimple_wce_cleanup (stmt)); | |
1744 | gimple_wce_set_cleanup (copy, new_seq); | |
1745 | break; | |
1746 | ||
1747 | default: | |
1748 | gcc_unreachable (); | |
1749 | } | |
1750 | } | |
1751 | ||
1752 | /* Make copy of operands. */ | |
483ef49f RG |
1753 | for (i = 0; i < num_ops; i++) |
1754 | gimple_set_op (copy, i, unshare_expr (gimple_op (stmt, i))); | |
726a989a | 1755 | |
483ef49f RG |
1756 | if (gimple_has_mem_ops (stmt)) |
1757 | { | |
1758 | gimple_set_vdef (copy, gimple_vdef (stmt)); | |
1759 | gimple_set_vuse (copy, gimple_vuse (stmt)); | |
1760 | } | |
726a989a | 1761 | |
483ef49f RG |
1762 | /* Clear out SSA operand vectors on COPY. */ |
1763 | if (gimple_has_ops (stmt)) | |
1764 | { | |
483ef49f | 1765 | gimple_set_use_ops (copy, NULL); |
726a989a | 1766 | |
5006671f RG |
1767 | /* SSA operands need to be updated. */ |
1768 | gimple_set_modified (copy, true); | |
726a989a RB |
1769 | } |
1770 | ||
1771 | return copy; | |
1772 | } | |
1773 | ||
1774 | ||
726a989a RB |
1775 | /* Return true if statement S has side-effects. We consider a |
1776 | statement to have side effects if: | |
1777 | ||
1778 | - It is a GIMPLE_CALL not marked with ECF_PURE or ECF_CONST. | |
1779 | - Any of its operands are marked TREE_THIS_VOLATILE or TREE_SIDE_EFFECTS. */ | |
1780 | ||
1781 | bool | |
1782 | gimple_has_side_effects (const_gimple s) | |
1783 | { | |
b5b8b0ac AO |
1784 | if (is_gimple_debug (s)) |
1785 | return false; | |
1786 | ||
726a989a RB |
1787 | /* We don't have to scan the arguments to check for |
1788 | volatile arguments, though, at present, we still | |
1789 | do a scan to check for TREE_SIDE_EFFECTS. */ | |
1790 | if (gimple_has_volatile_ops (s)) | |
1791 | return true; | |
1792 | ||
179184e3 RG |
1793 | if (gimple_code (s) == GIMPLE_ASM |
1794 | && gimple_asm_volatile_p (s)) | |
1795 | return true; | |
1796 | ||
726a989a RB |
1797 | if (is_gimple_call (s)) |
1798 | { | |
723afc44 | 1799 | int flags = gimple_call_flags (s); |
726a989a | 1800 | |
723afc44 RG |
1801 | /* An infinite loop is considered a side effect. */ |
1802 | if (!(flags & (ECF_CONST | ECF_PURE)) | |
1803 | || (flags & ECF_LOOPING_CONST_OR_PURE)) | |
726a989a RB |
1804 | return true; |
1805 | ||
726a989a RB |
1806 | return false; |
1807 | } | |
726a989a RB |
1808 | |
1809 | return false; | |
1810 | } | |
1811 | ||
726a989a | 1812 | /* Helper for gimple_could_trap_p and gimple_assign_rhs_could_trap_p. |
e1fd038a SP |
1813 | Return true if S can trap. When INCLUDE_MEM is true, check whether |
1814 | the memory operations could trap. When INCLUDE_STORES is true and | |
1815 | S is a GIMPLE_ASSIGN, the LHS of the assignment is also checked. */ | |
726a989a | 1816 | |
e1fd038a SP |
1817 | bool |
1818 | gimple_could_trap_p_1 (gimple s, bool include_mem, bool include_stores) | |
726a989a | 1819 | { |
726a989a RB |
1820 | tree t, div = NULL_TREE; |
1821 | enum tree_code op; | |
1822 | ||
e1fd038a SP |
1823 | if (include_mem) |
1824 | { | |
1825 | unsigned i, start = (is_gimple_assign (s) && !include_stores) ? 1 : 0; | |
726a989a | 1826 | |
e1fd038a SP |
1827 | for (i = start; i < gimple_num_ops (s); i++) |
1828 | if (tree_could_trap_p (gimple_op (s, i))) | |
1829 | return true; | |
1830 | } | |
726a989a RB |
1831 | |
1832 | switch (gimple_code (s)) | |
1833 | { | |
1834 | case GIMPLE_ASM: | |
1835 | return gimple_asm_volatile_p (s); | |
1836 | ||
1837 | case GIMPLE_CALL: | |
1838 | t = gimple_call_fndecl (s); | |
1839 | /* Assume that calls to weak functions may trap. */ | |
1840 | if (!t || !DECL_P (t) || DECL_WEAK (t)) | |
1841 | return true; | |
1842 | return false; | |
1843 | ||
1844 | case GIMPLE_ASSIGN: | |
1845 | t = gimple_expr_type (s); | |
1846 | op = gimple_assign_rhs_code (s); | |
1847 | if (get_gimple_rhs_class (op) == GIMPLE_BINARY_RHS) | |
1848 | div = gimple_assign_rhs2 (s); | |
1849 | return (operation_could_trap_p (op, FLOAT_TYPE_P (t), | |
1850 | (INTEGRAL_TYPE_P (t) | |
1851 | && TYPE_OVERFLOW_TRAPS (t)), | |
1852 | div)); | |
1853 | ||
1854 | default: | |
1855 | break; | |
1856 | } | |
1857 | ||
1858 | return false; | |
726a989a RB |
1859 | } |
1860 | ||
726a989a RB |
1861 | /* Return true if statement S can trap. */ |
1862 | ||
1863 | bool | |
1864 | gimple_could_trap_p (gimple s) | |
1865 | { | |
e1fd038a | 1866 | return gimple_could_trap_p_1 (s, true, true); |
726a989a RB |
1867 | } |
1868 | ||
726a989a RB |
1869 | /* Return true if RHS of a GIMPLE_ASSIGN S can trap. */ |
1870 | ||
1871 | bool | |
1872 | gimple_assign_rhs_could_trap_p (gimple s) | |
1873 | { | |
1874 | gcc_assert (is_gimple_assign (s)); | |
e1fd038a | 1875 | return gimple_could_trap_p_1 (s, true, false); |
726a989a RB |
1876 | } |
1877 | ||
1878 | ||
1879 | /* Print debugging information for gimple stmts generated. */ | |
1880 | ||
1881 | void | |
1882 | dump_gimple_statistics (void) | |
1883 | { | |
726a989a RB |
1884 | int i, total_tuples = 0, total_bytes = 0; |
1885 | ||
7aa6d18a SB |
1886 | if (! GATHER_STATISTICS) |
1887 | { | |
1888 | fprintf (stderr, "No gimple statistics\n"); | |
1889 | return; | |
1890 | } | |
1891 | ||
726a989a RB |
1892 | fprintf (stderr, "\nGIMPLE statements\n"); |
1893 | fprintf (stderr, "Kind Stmts Bytes\n"); | |
1894 | fprintf (stderr, "---------------------------------------\n"); | |
1895 | for (i = 0; i < (int) gimple_alloc_kind_all; ++i) | |
1896 | { | |
1897 | fprintf (stderr, "%-20s %7d %10d\n", gimple_alloc_kind_names[i], | |
1898 | gimple_alloc_counts[i], gimple_alloc_sizes[i]); | |
1899 | total_tuples += gimple_alloc_counts[i]; | |
1900 | total_bytes += gimple_alloc_sizes[i]; | |
1901 | } | |
1902 | fprintf (stderr, "---------------------------------------\n"); | |
1903 | fprintf (stderr, "%-20s %7d %10d\n", "Total", total_tuples, total_bytes); | |
1904 | fprintf (stderr, "---------------------------------------\n"); | |
726a989a RB |
1905 | } |
1906 | ||
1907 | ||
726a989a RB |
1908 | /* Return the number of operands needed on the RHS of a GIMPLE |
1909 | assignment for an expression with tree code CODE. */ | |
1910 | ||
1911 | unsigned | |
1912 | get_gimple_rhs_num_ops (enum tree_code code) | |
1913 | { | |
1914 | enum gimple_rhs_class rhs_class = get_gimple_rhs_class (code); | |
1915 | ||
1916 | if (rhs_class == GIMPLE_UNARY_RHS || rhs_class == GIMPLE_SINGLE_RHS) | |
1917 | return 1; | |
1918 | else if (rhs_class == GIMPLE_BINARY_RHS) | |
1919 | return 2; | |
0354c0c7 BS |
1920 | else if (rhs_class == GIMPLE_TERNARY_RHS) |
1921 | return 3; | |
726a989a RB |
1922 | else |
1923 | gcc_unreachable (); | |
1924 | } | |
1925 | ||
1926 | #define DEFTREECODE(SYM, STRING, TYPE, NARGS) \ | |
1927 | (unsigned char) \ | |
1928 | ((TYPE) == tcc_unary ? GIMPLE_UNARY_RHS \ | |
1929 | : ((TYPE) == tcc_binary \ | |
1930 | || (TYPE) == tcc_comparison) ? GIMPLE_BINARY_RHS \ | |
1931 | : ((TYPE) == tcc_constant \ | |
1932 | || (TYPE) == tcc_declaration \ | |
1933 | || (TYPE) == tcc_reference) ? GIMPLE_SINGLE_RHS \ | |
1934 | : ((SYM) == TRUTH_AND_EXPR \ | |
1935 | || (SYM) == TRUTH_OR_EXPR \ | |
1936 | || (SYM) == TRUTH_XOR_EXPR) ? GIMPLE_BINARY_RHS \ | |
1937 | : (SYM) == TRUTH_NOT_EXPR ? GIMPLE_UNARY_RHS \ | |
4e71066d RG |
1938 | : ((SYM) == COND_EXPR \ |
1939 | || (SYM) == WIDEN_MULT_PLUS_EXPR \ | |
16949072 | 1940 | || (SYM) == WIDEN_MULT_MINUS_EXPR \ |
f471fe72 RG |
1941 | || (SYM) == DOT_PROD_EXPR \ |
1942 | || (SYM) == REALIGN_LOAD_EXPR \ | |
4e71066d | 1943 | || (SYM) == VEC_COND_EXPR \ |
2205ed25 | 1944 | || (SYM) == VEC_PERM_EXPR \ |
16949072 | 1945 | || (SYM) == FMA_EXPR) ? GIMPLE_TERNARY_RHS \ |
4e71066d | 1946 | : ((SYM) == CONSTRUCTOR \ |
726a989a RB |
1947 | || (SYM) == OBJ_TYPE_REF \ |
1948 | || (SYM) == ASSERT_EXPR \ | |
1949 | || (SYM) == ADDR_EXPR \ | |
1950 | || (SYM) == WITH_SIZE_EXPR \ | |
4e71066d | 1951 | || (SYM) == SSA_NAME) ? GIMPLE_SINGLE_RHS \ |
726a989a RB |
1952 | : GIMPLE_INVALID_RHS), |
1953 | #define END_OF_BASE_TREE_CODES (unsigned char) GIMPLE_INVALID_RHS, | |
1954 | ||
1955 | const unsigned char gimple_rhs_class_table[] = { | |
1956 | #include "all-tree.def" | |
1957 | }; | |
1958 | ||
1959 | #undef DEFTREECODE | |
1960 | #undef END_OF_BASE_TREE_CODES | |
1961 | ||
726a989a RB |
1962 | /* Canonicalize a tree T for use in a COND_EXPR as conditional. Returns |
1963 | a canonicalized tree that is valid for a COND_EXPR or NULL_TREE, if | |
1964 | we failed to create one. */ | |
1965 | ||
1966 | tree | |
1967 | canonicalize_cond_expr_cond (tree t) | |
1968 | { | |
b66a1bac RG |
1969 | /* Strip conversions around boolean operations. */ |
1970 | if (CONVERT_EXPR_P (t) | |
9b80d091 KT |
1971 | && (truth_value_p (TREE_CODE (TREE_OPERAND (t, 0))) |
1972 | || TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) | |
1973 | == BOOLEAN_TYPE)) | |
b66a1bac RG |
1974 | t = TREE_OPERAND (t, 0); |
1975 | ||
726a989a | 1976 | /* For !x use x == 0. */ |
12430896 | 1977 | if (TREE_CODE (t) == TRUTH_NOT_EXPR) |
726a989a RB |
1978 | { |
1979 | tree top0 = TREE_OPERAND (t, 0); | |
1980 | t = build2 (EQ_EXPR, TREE_TYPE (t), | |
1981 | top0, build_int_cst (TREE_TYPE (top0), 0)); | |
1982 | } | |
1983 | /* For cmp ? 1 : 0 use cmp. */ | |
1984 | else if (TREE_CODE (t) == COND_EXPR | |
1985 | && COMPARISON_CLASS_P (TREE_OPERAND (t, 0)) | |
1986 | && integer_onep (TREE_OPERAND (t, 1)) | |
1987 | && integer_zerop (TREE_OPERAND (t, 2))) | |
1988 | { | |
1989 | tree top0 = TREE_OPERAND (t, 0); | |
1990 | t = build2 (TREE_CODE (top0), TREE_TYPE (t), | |
1991 | TREE_OPERAND (top0, 0), TREE_OPERAND (top0, 1)); | |
1992 | } | |
4481581f JL |
1993 | /* For x ^ y use x != y. */ |
1994 | else if (TREE_CODE (t) == BIT_XOR_EXPR) | |
1995 | t = build2 (NE_EXPR, TREE_TYPE (t), | |
1996 | TREE_OPERAND (t, 0), TREE_OPERAND (t, 1)); | |
1997 | ||
726a989a RB |
1998 | if (is_gimple_condexpr (t)) |
1999 | return t; | |
2000 | ||
2001 | return NULL_TREE; | |
2002 | } | |
2003 | ||
e6c99067 DN |
2004 | /* Build a GIMPLE_CALL identical to STMT but skipping the arguments in |
2005 | the positions marked by the set ARGS_TO_SKIP. */ | |
2006 | ||
c6f7cfc1 | 2007 | gimple |
5c0466b5 | 2008 | gimple_call_copy_skip_args (gimple stmt, bitmap args_to_skip) |
c6f7cfc1 JH |
2009 | { |
2010 | int i; | |
c6f7cfc1 | 2011 | int nargs = gimple_call_num_args (stmt); |
ef062b13 | 2012 | auto_vec<tree> vargs (nargs); |
c6f7cfc1 JH |
2013 | gimple new_stmt; |
2014 | ||
2015 | for (i = 0; i < nargs; i++) | |
2016 | if (!bitmap_bit_p (args_to_skip, i)) | |
9771b263 | 2017 | vargs.quick_push (gimple_call_arg (stmt, i)); |
c6f7cfc1 | 2018 | |
25583c4f RS |
2019 | if (gimple_call_internal_p (stmt)) |
2020 | new_stmt = gimple_build_call_internal_vec (gimple_call_internal_fn (stmt), | |
2021 | vargs); | |
2022 | else | |
2023 | new_stmt = gimple_build_call_vec (gimple_call_fn (stmt), vargs); | |
ef062b13 | 2024 | |
c6f7cfc1 JH |
2025 | if (gimple_call_lhs (stmt)) |
2026 | gimple_call_set_lhs (new_stmt, gimple_call_lhs (stmt)); | |
2027 | ||
5006671f RG |
2028 | gimple_set_vuse (new_stmt, gimple_vuse (stmt)); |
2029 | gimple_set_vdef (new_stmt, gimple_vdef (stmt)); | |
2030 | ||
c6f7cfc1 JH |
2031 | if (gimple_has_location (stmt)) |
2032 | gimple_set_location (new_stmt, gimple_location (stmt)); | |
8d2adc24 | 2033 | gimple_call_copy_flags (new_stmt, stmt); |
c6f7cfc1 | 2034 | gimple_call_set_chain (new_stmt, gimple_call_chain (stmt)); |
5006671f RG |
2035 | |
2036 | gimple_set_modified (new_stmt, true); | |
2037 | ||
c6f7cfc1 JH |
2038 | return new_stmt; |
2039 | } | |
2040 | ||
5006671f | 2041 | |
d7f09764 | 2042 | |
d025732d EB |
2043 | /* Return true if the field decls F1 and F2 are at the same offset. |
2044 | ||
91f2fae8 | 2045 | This is intended to be used on GIMPLE types only. */ |
d7f09764 | 2046 | |
1e4bc4eb | 2047 | bool |
d025732d | 2048 | gimple_compare_field_offset (tree f1, tree f2) |
d7f09764 DN |
2049 | { |
2050 | if (DECL_OFFSET_ALIGN (f1) == DECL_OFFSET_ALIGN (f2)) | |
d025732d EB |
2051 | { |
2052 | tree offset1 = DECL_FIELD_OFFSET (f1); | |
2053 | tree offset2 = DECL_FIELD_OFFSET (f2); | |
2054 | return ((offset1 == offset2 | |
2055 | /* Once gimplification is done, self-referential offsets are | |
2056 | instantiated as operand #2 of the COMPONENT_REF built for | |
2057 | each access and reset. Therefore, they are not relevant | |
2058 | anymore and fields are interchangeable provided that they | |
2059 | represent the same access. */ | |
2060 | || (TREE_CODE (offset1) == PLACEHOLDER_EXPR | |
2061 | && TREE_CODE (offset2) == PLACEHOLDER_EXPR | |
2062 | && (DECL_SIZE (f1) == DECL_SIZE (f2) | |
2063 | || (TREE_CODE (DECL_SIZE (f1)) == PLACEHOLDER_EXPR | |
2064 | && TREE_CODE (DECL_SIZE (f2)) == PLACEHOLDER_EXPR) | |
2065 | || operand_equal_p (DECL_SIZE (f1), DECL_SIZE (f2), 0)) | |
2066 | && DECL_ALIGN (f1) == DECL_ALIGN (f2)) | |
2067 | || operand_equal_p (offset1, offset2, 0)) | |
2068 | && tree_int_cst_equal (DECL_FIELD_BIT_OFFSET (f1), | |
2069 | DECL_FIELD_BIT_OFFSET (f2))); | |
2070 | } | |
d7f09764 DN |
2071 | |
2072 | /* Fortran and C do not always agree on what DECL_OFFSET_ALIGN | |
2073 | should be, so handle differing ones specially by decomposing | |
2074 | the offset into a byte and bit offset manually. */ | |
9541ffee RS |
2075 | if (tree_fits_shwi_p (DECL_FIELD_OFFSET (f1)) |
2076 | && tree_fits_shwi_p (DECL_FIELD_OFFSET (f2))) | |
d7f09764 DN |
2077 | { |
2078 | unsigned HOST_WIDE_INT byte_offset1, byte_offset2; | |
2079 | unsigned HOST_WIDE_INT bit_offset1, bit_offset2; | |
2080 | bit_offset1 = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f1)); | |
2081 | byte_offset1 = (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f1)) | |
2082 | + bit_offset1 / BITS_PER_UNIT); | |
2083 | bit_offset2 = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f2)); | |
2084 | byte_offset2 = (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f2)) | |
2085 | + bit_offset2 / BITS_PER_UNIT); | |
2086 | if (byte_offset1 != byte_offset2) | |
2087 | return false; | |
2088 | return bit_offset1 % BITS_PER_UNIT == bit_offset2 % BITS_PER_UNIT; | |
2089 | } | |
2090 | ||
2091 | return false; | |
2092 | } | |
2093 | ||
d7f09764 DN |
2094 | |
2095 | /* Return a type the same as TYPE except unsigned or | |
2096 | signed according to UNSIGNEDP. */ | |
2097 | ||
2098 | static tree | |
2099 | gimple_signed_or_unsigned_type (bool unsignedp, tree type) | |
2100 | { | |
2101 | tree type1; | |
2102 | ||
2103 | type1 = TYPE_MAIN_VARIANT (type); | |
2104 | if (type1 == signed_char_type_node | |
2105 | || type1 == char_type_node | |
2106 | || type1 == unsigned_char_type_node) | |
2107 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
2108 | if (type1 == integer_type_node || type1 == unsigned_type_node) | |
2109 | return unsignedp ? unsigned_type_node : integer_type_node; | |
2110 | if (type1 == short_integer_type_node || type1 == short_unsigned_type_node) | |
2111 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
2112 | if (type1 == long_integer_type_node || type1 == long_unsigned_type_node) | |
2113 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
2114 | if (type1 == long_long_integer_type_node | |
2115 | || type1 == long_long_unsigned_type_node) | |
2116 | return unsignedp | |
2117 | ? long_long_unsigned_type_node | |
2118 | : long_long_integer_type_node; | |
a6766312 KT |
2119 | if (int128_integer_type_node && (type1 == int128_integer_type_node || type1 == int128_unsigned_type_node)) |
2120 | return unsignedp | |
2121 | ? int128_unsigned_type_node | |
2122 | : int128_integer_type_node; | |
d7f09764 DN |
2123 | #if HOST_BITS_PER_WIDE_INT >= 64 |
2124 | if (type1 == intTI_type_node || type1 == unsigned_intTI_type_node) | |
2125 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
2126 | #endif | |
2127 | if (type1 == intDI_type_node || type1 == unsigned_intDI_type_node) | |
2128 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
2129 | if (type1 == intSI_type_node || type1 == unsigned_intSI_type_node) | |
2130 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
2131 | if (type1 == intHI_type_node || type1 == unsigned_intHI_type_node) | |
2132 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
2133 | if (type1 == intQI_type_node || type1 == unsigned_intQI_type_node) | |
2134 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
2135 | ||
2136 | #define GIMPLE_FIXED_TYPES(NAME) \ | |
2137 | if (type1 == short_ ## NAME ## _type_node \ | |
2138 | || type1 == unsigned_short_ ## NAME ## _type_node) \ | |
2139 | return unsignedp ? unsigned_short_ ## NAME ## _type_node \ | |
2140 | : short_ ## NAME ## _type_node; \ | |
2141 | if (type1 == NAME ## _type_node \ | |
2142 | || type1 == unsigned_ ## NAME ## _type_node) \ | |
2143 | return unsignedp ? unsigned_ ## NAME ## _type_node \ | |
2144 | : NAME ## _type_node; \ | |
2145 | if (type1 == long_ ## NAME ## _type_node \ | |
2146 | || type1 == unsigned_long_ ## NAME ## _type_node) \ | |
2147 | return unsignedp ? unsigned_long_ ## NAME ## _type_node \ | |
2148 | : long_ ## NAME ## _type_node; \ | |
2149 | if (type1 == long_long_ ## NAME ## _type_node \ | |
2150 | || type1 == unsigned_long_long_ ## NAME ## _type_node) \ | |
2151 | return unsignedp ? unsigned_long_long_ ## NAME ## _type_node \ | |
2152 | : long_long_ ## NAME ## _type_node; | |
2153 | ||
2154 | #define GIMPLE_FIXED_MODE_TYPES(NAME) \ | |
2155 | if (type1 == NAME ## _type_node \ | |
2156 | || type1 == u ## NAME ## _type_node) \ | |
2157 | return unsignedp ? u ## NAME ## _type_node \ | |
2158 | : NAME ## _type_node; | |
2159 | ||
2160 | #define GIMPLE_FIXED_TYPES_SAT(NAME) \ | |
2161 | if (type1 == sat_ ## short_ ## NAME ## _type_node \ | |
2162 | || type1 == sat_ ## unsigned_short_ ## NAME ## _type_node) \ | |
2163 | return unsignedp ? sat_ ## unsigned_short_ ## NAME ## _type_node \ | |
2164 | : sat_ ## short_ ## NAME ## _type_node; \ | |
2165 | if (type1 == sat_ ## NAME ## _type_node \ | |
2166 | || type1 == sat_ ## unsigned_ ## NAME ## _type_node) \ | |
2167 | return unsignedp ? sat_ ## unsigned_ ## NAME ## _type_node \ | |
2168 | : sat_ ## NAME ## _type_node; \ | |
2169 | if (type1 == sat_ ## long_ ## NAME ## _type_node \ | |
2170 | || type1 == sat_ ## unsigned_long_ ## NAME ## _type_node) \ | |
2171 | return unsignedp ? sat_ ## unsigned_long_ ## NAME ## _type_node \ | |
2172 | : sat_ ## long_ ## NAME ## _type_node; \ | |
2173 | if (type1 == sat_ ## long_long_ ## NAME ## _type_node \ | |
2174 | || type1 == sat_ ## unsigned_long_long_ ## NAME ## _type_node) \ | |
2175 | return unsignedp ? sat_ ## unsigned_long_long_ ## NAME ## _type_node \ | |
2176 | : sat_ ## long_long_ ## NAME ## _type_node; | |
2177 | ||
2178 | #define GIMPLE_FIXED_MODE_TYPES_SAT(NAME) \ | |
2179 | if (type1 == sat_ ## NAME ## _type_node \ | |
2180 | || type1 == sat_ ## u ## NAME ## _type_node) \ | |
2181 | return unsignedp ? sat_ ## u ## NAME ## _type_node \ | |
2182 | : sat_ ## NAME ## _type_node; | |
2183 | ||
2184 | GIMPLE_FIXED_TYPES (fract); | |
2185 | GIMPLE_FIXED_TYPES_SAT (fract); | |
2186 | GIMPLE_FIXED_TYPES (accum); | |
2187 | GIMPLE_FIXED_TYPES_SAT (accum); | |
2188 | ||
2189 | GIMPLE_FIXED_MODE_TYPES (qq); | |
2190 | GIMPLE_FIXED_MODE_TYPES (hq); | |
2191 | GIMPLE_FIXED_MODE_TYPES (sq); | |
2192 | GIMPLE_FIXED_MODE_TYPES (dq); | |
2193 | GIMPLE_FIXED_MODE_TYPES (tq); | |
2194 | GIMPLE_FIXED_MODE_TYPES_SAT (qq); | |
2195 | GIMPLE_FIXED_MODE_TYPES_SAT (hq); | |
2196 | GIMPLE_FIXED_MODE_TYPES_SAT (sq); | |
2197 | GIMPLE_FIXED_MODE_TYPES_SAT (dq); | |
2198 | GIMPLE_FIXED_MODE_TYPES_SAT (tq); | |
2199 | GIMPLE_FIXED_MODE_TYPES (ha); | |
2200 | GIMPLE_FIXED_MODE_TYPES (sa); | |
2201 | GIMPLE_FIXED_MODE_TYPES (da); | |
2202 | GIMPLE_FIXED_MODE_TYPES (ta); | |
2203 | GIMPLE_FIXED_MODE_TYPES_SAT (ha); | |
2204 | GIMPLE_FIXED_MODE_TYPES_SAT (sa); | |
2205 | GIMPLE_FIXED_MODE_TYPES_SAT (da); | |
2206 | GIMPLE_FIXED_MODE_TYPES_SAT (ta); | |
2207 | ||
2208 | /* For ENUMERAL_TYPEs in C++, must check the mode of the types, not | |
2209 | the precision; they have precision set to match their range, but | |
2210 | may use a wider mode to match an ABI. If we change modes, we may | |
2211 | wind up with bad conversions. For INTEGER_TYPEs in C, must check | |
2212 | the precision as well, so as to yield correct results for | |
2213 | bit-field types. C++ does not have these separate bit-field | |
2214 | types, and producing a signed or unsigned variant of an | |
2215 | ENUMERAL_TYPE may cause other problems as well. */ | |
2216 | if (!INTEGRAL_TYPE_P (type) | |
2217 | || TYPE_UNSIGNED (type) == unsignedp) | |
2218 | return type; | |
2219 | ||
2220 | #define TYPE_OK(node) \ | |
2221 | (TYPE_MODE (type) == TYPE_MODE (node) \ | |
2222 | && TYPE_PRECISION (type) == TYPE_PRECISION (node)) | |
2223 | if (TYPE_OK (signed_char_type_node)) | |
2224 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
2225 | if (TYPE_OK (integer_type_node)) | |
2226 | return unsignedp ? unsigned_type_node : integer_type_node; | |
2227 | if (TYPE_OK (short_integer_type_node)) | |
2228 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
2229 | if (TYPE_OK (long_integer_type_node)) | |
2230 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
2231 | if (TYPE_OK (long_long_integer_type_node)) | |
2232 | return (unsignedp | |
2233 | ? long_long_unsigned_type_node | |
2234 | : long_long_integer_type_node); | |
a6766312 KT |
2235 | if (int128_integer_type_node && TYPE_OK (int128_integer_type_node)) |
2236 | return (unsignedp | |
2237 | ? int128_unsigned_type_node | |
2238 | : int128_integer_type_node); | |
d7f09764 DN |
2239 | |
2240 | #if HOST_BITS_PER_WIDE_INT >= 64 | |
2241 | if (TYPE_OK (intTI_type_node)) | |
2242 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
2243 | #endif | |
2244 | if (TYPE_OK (intDI_type_node)) | |
2245 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
2246 | if (TYPE_OK (intSI_type_node)) | |
2247 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
2248 | if (TYPE_OK (intHI_type_node)) | |
2249 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
2250 | if (TYPE_OK (intQI_type_node)) | |
2251 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
2252 | ||
2253 | #undef GIMPLE_FIXED_TYPES | |
2254 | #undef GIMPLE_FIXED_MODE_TYPES | |
2255 | #undef GIMPLE_FIXED_TYPES_SAT | |
2256 | #undef GIMPLE_FIXED_MODE_TYPES_SAT | |
2257 | #undef TYPE_OK | |
2258 | ||
2259 | return build_nonstandard_integer_type (TYPE_PRECISION (type), unsignedp); | |
2260 | } | |
2261 | ||
2262 | ||
2263 | /* Return an unsigned type the same as TYPE in other respects. */ | |
2264 | ||
2265 | tree | |
2266 | gimple_unsigned_type (tree type) | |
2267 | { | |
2268 | return gimple_signed_or_unsigned_type (true, type); | |
2269 | } | |
2270 | ||
2271 | ||
2272 | /* Return a signed type the same as TYPE in other respects. */ | |
2273 | ||
2274 | tree | |
2275 | gimple_signed_type (tree type) | |
2276 | { | |
2277 | return gimple_signed_or_unsigned_type (false, type); | |
2278 | } | |
2279 | ||
2280 | ||
2281 | /* Return the typed-based alias set for T, which may be an expression | |
2282 | or a type. Return -1 if we don't do anything special. */ | |
2283 | ||
2284 | alias_set_type | |
2285 | gimple_get_alias_set (tree t) | |
2286 | { | |
2287 | tree u; | |
2288 | ||
2289 | /* Permit type-punning when accessing a union, provided the access | |
2290 | is directly through the union. For example, this code does not | |
2291 | permit taking the address of a union member and then storing | |
2292 | through it. Even the type-punning allowed here is a GCC | |
2293 | extension, albeit a common and useful one; the C standard says | |
2294 | that such accesses have implementation-defined behavior. */ | |
2295 | for (u = t; | |
2296 | TREE_CODE (u) == COMPONENT_REF || TREE_CODE (u) == ARRAY_REF; | |
2297 | u = TREE_OPERAND (u, 0)) | |
2298 | if (TREE_CODE (u) == COMPONENT_REF | |
2299 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (u, 0))) == UNION_TYPE) | |
2300 | return 0; | |
2301 | ||
2302 | /* That's all the expressions we handle specially. */ | |
2303 | if (!TYPE_P (t)) | |
2304 | return -1; | |
2305 | ||
2306 | /* For convenience, follow the C standard when dealing with | |
2307 | character types. Any object may be accessed via an lvalue that | |
2308 | has character type. */ | |
2309 | if (t == char_type_node | |
2310 | || t == signed_char_type_node | |
2311 | || t == unsigned_char_type_node) | |
2312 | return 0; | |
2313 | ||
2314 | /* Allow aliasing between signed and unsigned variants of the same | |
2315 | type. We treat the signed variant as canonical. */ | |
2316 | if (TREE_CODE (t) == INTEGER_TYPE && TYPE_UNSIGNED (t)) | |
2317 | { | |
2318 | tree t1 = gimple_signed_type (t); | |
2319 | ||
2320 | /* t1 == t can happen for boolean nodes which are always unsigned. */ | |
2321 | if (t1 != t) | |
2322 | return get_alias_set (t1); | |
2323 | } | |
d7f09764 DN |
2324 | |
2325 | return -1; | |
2326 | } | |
2327 | ||
2328 | ||
ccacdf06 RG |
2329 | /* Helper for gimple_ior_addresses_taken_1. */ |
2330 | ||
2331 | static bool | |
9f1363cd | 2332 | gimple_ior_addresses_taken_1 (gimple, tree addr, tree, void *data) |
ccacdf06 RG |
2333 | { |
2334 | bitmap addresses_taken = (bitmap)data; | |
2ea9dc64 RG |
2335 | addr = get_base_address (addr); |
2336 | if (addr | |
2337 | && DECL_P (addr)) | |
ccacdf06 RG |
2338 | { |
2339 | bitmap_set_bit (addresses_taken, DECL_UID (addr)); | |
2340 | return true; | |
2341 | } | |
2342 | return false; | |
2343 | } | |
2344 | ||
2345 | /* Set the bit for the uid of all decls that have their address taken | |
2346 | in STMT in the ADDRESSES_TAKEN bitmap. Returns true if there | |
2347 | were any in this stmt. */ | |
2348 | ||
2349 | bool | |
2350 | gimple_ior_addresses_taken (bitmap addresses_taken, gimple stmt) | |
2351 | { | |
2352 | return walk_stmt_load_store_addr_ops (stmt, addresses_taken, NULL, NULL, | |
2353 | gimple_ior_addresses_taken_1); | |
2354 | } | |
2355 | ||
4537ec0c | 2356 | |
5c944c6c RB |
2357 | /* Return true if TYPE1 and TYPE2 are compatible enough for builtin |
2358 | processing. */ | |
25ae5027 | 2359 | |
5c944c6c RB |
2360 | static bool |
2361 | validate_type (tree type1, tree type2) | |
2362 | { | |
2363 | if (INTEGRAL_TYPE_P (type1) | |
2364 | && INTEGRAL_TYPE_P (type2)) | |
2365 | ; | |
2366 | else if (POINTER_TYPE_P (type1) | |
2367 | && POINTER_TYPE_P (type2)) | |
2368 | ; | |
2369 | else if (TREE_CODE (type1) | |
2370 | != TREE_CODE (type2)) | |
2371 | return false; | |
2372 | return true; | |
25ae5027 DS |
2373 | } |
2374 | ||
5c944c6c RB |
2375 | /* Return true when STMTs arguments and return value match those of FNDECL, |
2376 | a decl of a builtin function. */ | |
3626621a | 2377 | |
5c944c6c RB |
2378 | bool |
2379 | gimple_builtin_call_types_compatible_p (gimple stmt, tree fndecl) | |
3626621a | 2380 | { |
5c944c6c RB |
2381 | gcc_checking_assert (DECL_BUILT_IN_CLASS (fndecl) != NOT_BUILT_IN); |
2382 | ||
2383 | tree ret = gimple_call_lhs (stmt); | |
2384 | if (ret | |
2385 | && !validate_type (TREE_TYPE (ret), TREE_TYPE (TREE_TYPE (fndecl)))) | |
2386 | return false; | |
2387 | ||
3626621a RB |
2388 | tree targs = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
2389 | unsigned nargs = gimple_call_num_args (stmt); | |
2390 | for (unsigned i = 0; i < nargs; ++i) | |
2391 | { | |
2392 | /* Variadic args follow. */ | |
2393 | if (!targs) | |
2394 | return true; | |
2395 | tree arg = gimple_call_arg (stmt, i); | |
5c944c6c | 2396 | if (!validate_type (TREE_TYPE (arg), TREE_VALUE (targs))) |
3626621a RB |
2397 | return false; |
2398 | targs = TREE_CHAIN (targs); | |
2399 | } | |
2400 | if (targs && !VOID_TYPE_P (TREE_VALUE (targs))) | |
2401 | return false; | |
2402 | return true; | |
2403 | } | |
2404 | ||
5c944c6c RB |
2405 | /* Return true when STMT is builtins call. */ |
2406 | ||
2407 | bool | |
2408 | gimple_call_builtin_p (gimple stmt) | |
2409 | { | |
2410 | tree fndecl; | |
2411 | if (is_gimple_call (stmt) | |
2412 | && (fndecl = gimple_call_fndecl (stmt)) != NULL_TREE | |
2413 | && DECL_BUILT_IN_CLASS (fndecl) != NOT_BUILT_IN) | |
2414 | return gimple_builtin_call_types_compatible_p (stmt, fndecl); | |
2415 | return false; | |
2416 | } | |
2417 | ||
3626621a RB |
2418 | /* Return true when STMT is builtins call to CLASS. */ |
2419 | ||
2420 | bool | |
2421 | gimple_call_builtin_p (gimple stmt, enum built_in_class klass) | |
2422 | { | |
2423 | tree fndecl; | |
2424 | if (is_gimple_call (stmt) | |
2425 | && (fndecl = gimple_call_fndecl (stmt)) != NULL_TREE | |
2426 | && DECL_BUILT_IN_CLASS (fndecl) == klass) | |
5c944c6c | 2427 | return gimple_builtin_call_types_compatible_p (stmt, fndecl); |
3626621a RB |
2428 | return false; |
2429 | } | |
2430 | ||
2431 | /* Return true when STMT is builtins call to CODE of CLASS. */ | |
c54c785d JH |
2432 | |
2433 | bool | |
2434 | gimple_call_builtin_p (gimple stmt, enum built_in_function code) | |
2435 | { | |
2436 | tree fndecl; | |
3626621a RB |
2437 | if (is_gimple_call (stmt) |
2438 | && (fndecl = gimple_call_fndecl (stmt)) != NULL_TREE | |
2439 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
2440 | && DECL_FUNCTION_CODE (fndecl) == code) | |
5c944c6c | 2441 | return gimple_builtin_call_types_compatible_p (stmt, fndecl); |
3626621a | 2442 | return false; |
c54c785d JH |
2443 | } |
2444 | ||
edcdea5b NF |
2445 | /* Return true if STMT clobbers memory. STMT is required to be a |
2446 | GIMPLE_ASM. */ | |
2447 | ||
2448 | bool | |
2449 | gimple_asm_clobbers_memory_p (const_gimple stmt) | |
2450 | { | |
2451 | unsigned i; | |
2452 | ||
2453 | for (i = 0; i < gimple_asm_nclobbers (stmt); i++) | |
2454 | { | |
2455 | tree op = gimple_asm_clobber_op (stmt, i); | |
2456 | if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op)), "memory") == 0) | |
2457 | return true; | |
2458 | } | |
2459 | ||
2460 | return false; | |
2461 | } | |
475b8f37 | 2462 | |
80560f95 AM |
2463 | /* Dump bitmap SET (assumed to contain VAR_DECLs) to FILE. */ |
2464 | ||
2465 | void | |
2466 | dump_decl_set (FILE *file, bitmap set) | |
2467 | { | |
2468 | if (set) | |
2469 | { | |
2470 | bitmap_iterator bi; | |
2471 | unsigned i; | |
2472 | ||
2473 | fprintf (file, "{ "); | |
2474 | ||
2475 | EXECUTE_IF_SET_IN_BITMAP (set, 0, i, bi) | |
2476 | { | |
2477 | fprintf (file, "D.%u", i); | |
2478 | fprintf (file, " "); | |
2479 | } | |
2480 | ||
2481 | fprintf (file, "}"); | |
2482 | } | |
2483 | else | |
2484 | fprintf (file, "NIL"); | |
2485 | } | |
7a300452 | 2486 | |
3d9c733e AM |
2487 | /* Return true when CALL is a call stmt that definitely doesn't |
2488 | free any memory or makes it unavailable otherwise. */ | |
2489 | bool | |
2490 | nonfreeing_call_p (gimple call) | |
2491 | { | |
2492 | if (gimple_call_builtin_p (call, BUILT_IN_NORMAL) | |
2493 | && gimple_call_flags (call) & ECF_LEAF) | |
2494 | switch (DECL_FUNCTION_CODE (gimple_call_fndecl (call))) | |
2495 | { | |
2496 | /* Just in case these become ECF_LEAF in the future. */ | |
2497 | case BUILT_IN_FREE: | |
2498 | case BUILT_IN_TM_FREE: | |
2499 | case BUILT_IN_REALLOC: | |
2500 | case BUILT_IN_STACK_RESTORE: | |
2501 | return false; | |
2502 | default: | |
2503 | return true; | |
2504 | } | |
2505 | ||
2506 | return false; | |
2507 | } | |
8fdc414d JL |
2508 | |
2509 | /* Callback for walk_stmt_load_store_ops. | |
2510 | ||
2511 | Return TRUE if OP will dereference the tree stored in DATA, FALSE | |
2512 | otherwise. | |
2513 | ||
2514 | This routine only makes a superficial check for a dereference. Thus | |
2515 | it must only be used if it is safe to return a false negative. */ | |
2516 | static bool | |
9f1363cd | 2517 | check_loadstore (gimple, tree op, tree, void *data) |
8fdc414d JL |
2518 | { |
2519 | if ((TREE_CODE (op) == MEM_REF || TREE_CODE (op) == TARGET_MEM_REF) | |
2520 | && operand_equal_p (TREE_OPERAND (op, 0), (tree)data, 0)) | |
2521 | return true; | |
2522 | return false; | |
2523 | } | |
2524 | ||
ae93744d JL |
2525 | /* If OP can be inferred to be non-NULL after STMT executes, return true. |
2526 | ||
2527 | DEREFERENCE is TRUE if we can use a pointer dereference to infer a | |
2528 | non-NULL range, FALSE otherwise. | |
2529 | ||
2530 | ATTRIBUTE is TRUE if we can use attributes to infer a non-NULL range | |
2531 | for function arguments and return values. FALSE otherwise. */ | |
8fdc414d JL |
2532 | |
2533 | bool | |
ae93744d | 2534 | infer_nonnull_range (gimple stmt, tree op, bool dereference, bool attribute) |
8fdc414d JL |
2535 | { |
2536 | /* We can only assume that a pointer dereference will yield | |
2537 | non-NULL if -fdelete-null-pointer-checks is enabled. */ | |
2538 | if (!flag_delete_null_pointer_checks | |
2539 | || !POINTER_TYPE_P (TREE_TYPE (op)) | |
2540 | || gimple_code (stmt) == GIMPLE_ASM) | |
2541 | return false; | |
2542 | ||
ae93744d JL |
2543 | if (dereference |
2544 | && walk_stmt_load_store_ops (stmt, (void *)op, | |
2545 | check_loadstore, check_loadstore)) | |
8fdc414d JL |
2546 | return true; |
2547 | ||
ae93744d JL |
2548 | if (attribute |
2549 | && is_gimple_call (stmt) && !gimple_call_internal_p (stmt)) | |
8fdc414d JL |
2550 | { |
2551 | tree fntype = gimple_call_fntype (stmt); | |
2552 | tree attrs = TYPE_ATTRIBUTES (fntype); | |
2553 | for (; attrs; attrs = TREE_CHAIN (attrs)) | |
2554 | { | |
2555 | attrs = lookup_attribute ("nonnull", attrs); | |
2556 | ||
2557 | /* If "nonnull" wasn't specified, we know nothing about | |
2558 | the argument. */ | |
2559 | if (attrs == NULL_TREE) | |
2560 | return false; | |
2561 | ||
2562 | /* If "nonnull" applies to all the arguments, then ARG | |
2563 | is non-null if it's in the argument list. */ | |
2564 | if (TREE_VALUE (attrs) == NULL_TREE) | |
2565 | { | |
2566 | for (unsigned int i = 0; i < gimple_call_num_args (stmt); i++) | |
2567 | { | |
2568 | if (operand_equal_p (op, gimple_call_arg (stmt, i), 0) | |
2569 | && POINTER_TYPE_P (TREE_TYPE (gimple_call_arg (stmt, i)))) | |
2570 | return true; | |
2571 | } | |
2572 | return false; | |
2573 | } | |
2574 | ||
2575 | /* Now see if op appears in the nonnull list. */ | |
2576 | for (tree t = TREE_VALUE (attrs); t; t = TREE_CHAIN (t)) | |
2577 | { | |
2578 | int idx = TREE_INT_CST_LOW (TREE_VALUE (t)) - 1; | |
2579 | tree arg = gimple_call_arg (stmt, idx); | |
2580 | if (operand_equal_p (op, arg, 0)) | |
2581 | return true; | |
2582 | } | |
2583 | } | |
2584 | } | |
2585 | ||
2586 | /* If this function is marked as returning non-null, then we can | |
2587 | infer OP is non-null if it is used in the return statement. */ | |
ae93744d JL |
2588 | if (attribute |
2589 | && gimple_code (stmt) == GIMPLE_RETURN | |
8fdc414d JL |
2590 | && gimple_return_retval (stmt) |
2591 | && operand_equal_p (gimple_return_retval (stmt), op, 0) | |
2592 | && lookup_attribute ("returns_nonnull", | |
2593 | TYPE_ATTRIBUTES (TREE_TYPE (current_function_decl)))) | |
2594 | return true; | |
2595 | ||
2596 | return false; | |
2597 | } | |
45b0be94 AM |
2598 | |
2599 | /* Compare two case labels. Because the front end should already have | |
2600 | made sure that case ranges do not overlap, it is enough to only compare | |
2601 | the CASE_LOW values of each case label. */ | |
2602 | ||
2603 | static int | |
2604 | compare_case_labels (const void *p1, const void *p2) | |
2605 | { | |
2606 | const_tree const case1 = *(const_tree const*)p1; | |
2607 | const_tree const case2 = *(const_tree const*)p2; | |
2608 | ||
2609 | /* The 'default' case label always goes first. */ | |
2610 | if (!CASE_LOW (case1)) | |
2611 | return -1; | |
2612 | else if (!CASE_LOW (case2)) | |
2613 | return 1; | |
2614 | else | |
2615 | return tree_int_cst_compare (CASE_LOW (case1), CASE_LOW (case2)); | |
2616 | } | |
2617 | ||
2618 | /* Sort the case labels in LABEL_VEC in place in ascending order. */ | |
2619 | ||
2620 | void | |
2621 | sort_case_labels (vec<tree> label_vec) | |
2622 | { | |
2623 | label_vec.qsort (compare_case_labels); | |
2624 | } | |
2625 | \f | |
2626 | /* Prepare a vector of case labels to be used in a GIMPLE_SWITCH statement. | |
2627 | ||
2628 | LABELS is a vector that contains all case labels to look at. | |
2629 | ||
2630 | INDEX_TYPE is the type of the switch index expression. Case labels | |
2631 | in LABELS are discarded if their values are not in the value range | |
2632 | covered by INDEX_TYPE. The remaining case label values are folded | |
2633 | to INDEX_TYPE. | |
2634 | ||
2635 | If a default case exists in LABELS, it is removed from LABELS and | |
2636 | returned in DEFAULT_CASEP. If no default case exists, but the | |
2637 | case labels already cover the whole range of INDEX_TYPE, a default | |
2638 | case is returned pointing to one of the existing case labels. | |
2639 | Otherwise DEFAULT_CASEP is set to NULL_TREE. | |
2640 | ||
2641 | DEFAULT_CASEP may be NULL, in which case the above comment doesn't | |
2642 | apply and no action is taken regardless of whether a default case is | |
2643 | found or not. */ | |
2644 | ||
2645 | void | |
2646 | preprocess_case_label_vec_for_gimple (vec<tree> labels, | |
2647 | tree index_type, | |
2648 | tree *default_casep) | |
2649 | { | |
2650 | tree min_value, max_value; | |
2651 | tree default_case = NULL_TREE; | |
2652 | size_t i, len; | |
2653 | ||
2654 | i = 0; | |
2655 | min_value = TYPE_MIN_VALUE (index_type); | |
2656 | max_value = TYPE_MAX_VALUE (index_type); | |
2657 | while (i < labels.length ()) | |
2658 | { | |
2659 | tree elt = labels[i]; | |
2660 | tree low = CASE_LOW (elt); | |
2661 | tree high = CASE_HIGH (elt); | |
2662 | bool remove_element = FALSE; | |
2663 | ||
2664 | if (low) | |
2665 | { | |
2666 | gcc_checking_assert (TREE_CODE (low) == INTEGER_CST); | |
2667 | gcc_checking_assert (!high || TREE_CODE (high) == INTEGER_CST); | |
2668 | ||
2669 | /* This is a non-default case label, i.e. it has a value. | |
2670 | ||
2671 | See if the case label is reachable within the range of | |
2672 | the index type. Remove out-of-range case values. Turn | |
2673 | case ranges into a canonical form (high > low strictly) | |
2674 | and convert the case label values to the index type. | |
2675 | ||
2676 | NB: The type of gimple_switch_index() may be the promoted | |
2677 | type, but the case labels retain the original type. */ | |
2678 | ||
2679 | if (high) | |
2680 | { | |
2681 | /* This is a case range. Discard empty ranges. | |
2682 | If the bounds or the range are equal, turn this | |
2683 | into a simple (one-value) case. */ | |
2684 | int cmp = tree_int_cst_compare (high, low); | |
2685 | if (cmp < 0) | |
2686 | remove_element = TRUE; | |
2687 | else if (cmp == 0) | |
2688 | high = NULL_TREE; | |
2689 | } | |
2690 | ||
2691 | if (! high) | |
2692 | { | |
2693 | /* If the simple case value is unreachable, ignore it. */ | |
2694 | if ((TREE_CODE (min_value) == INTEGER_CST | |
2695 | && tree_int_cst_compare (low, min_value) < 0) | |
2696 | || (TREE_CODE (max_value) == INTEGER_CST | |
2697 | && tree_int_cst_compare (low, max_value) > 0)) | |
2698 | remove_element = TRUE; | |
2699 | else | |
2700 | low = fold_convert (index_type, low); | |
2701 | } | |
2702 | else | |
2703 | { | |
2704 | /* If the entire case range is unreachable, ignore it. */ | |
2705 | if ((TREE_CODE (min_value) == INTEGER_CST | |
2706 | && tree_int_cst_compare (high, min_value) < 0) | |
2707 | || (TREE_CODE (max_value) == INTEGER_CST | |
2708 | && tree_int_cst_compare (low, max_value) > 0)) | |
2709 | remove_element = TRUE; | |
2710 | else | |
2711 | { | |
2712 | /* If the lower bound is less than the index type's | |
2713 | minimum value, truncate the range bounds. */ | |
2714 | if (TREE_CODE (min_value) == INTEGER_CST | |
2715 | && tree_int_cst_compare (low, min_value) < 0) | |
2716 | low = min_value; | |
2717 | low = fold_convert (index_type, low); | |
2718 | ||
2719 | /* If the upper bound is greater than the index type's | |
2720 | maximum value, truncate the range bounds. */ | |
2721 | if (TREE_CODE (max_value) == INTEGER_CST | |
2722 | && tree_int_cst_compare (high, max_value) > 0) | |
2723 | high = max_value; | |
2724 | high = fold_convert (index_type, high); | |
2725 | ||
2726 | /* We may have folded a case range to a one-value case. */ | |
2727 | if (tree_int_cst_equal (low, high)) | |
2728 | high = NULL_TREE; | |
2729 | } | |
2730 | } | |
2731 | ||
2732 | CASE_LOW (elt) = low; | |
2733 | CASE_HIGH (elt) = high; | |
2734 | } | |
2735 | else | |
2736 | { | |
2737 | gcc_assert (!default_case); | |
2738 | default_case = elt; | |
2739 | /* The default case must be passed separately to the | |
2740 | gimple_build_switch routine. But if DEFAULT_CASEP | |
2741 | is NULL, we do not remove the default case (it would | |
2742 | be completely lost). */ | |
2743 | if (default_casep) | |
2744 | remove_element = TRUE; | |
2745 | } | |
2746 | ||
2747 | if (remove_element) | |
2748 | labels.ordered_remove (i); | |
2749 | else | |
2750 | i++; | |
2751 | } | |
2752 | len = i; | |
2753 | ||
2754 | if (!labels.is_empty ()) | |
2755 | sort_case_labels (labels); | |
2756 | ||
2757 | if (default_casep && !default_case) | |
2758 | { | |
2759 | /* If the switch has no default label, add one, so that we jump | |
2760 | around the switch body. If the labels already cover the whole | |
2761 | range of the switch index_type, add the default label pointing | |
2762 | to one of the existing labels. */ | |
2763 | if (len | |
2764 | && TYPE_MIN_VALUE (index_type) | |
2765 | && TYPE_MAX_VALUE (index_type) | |
2766 | && tree_int_cst_equal (CASE_LOW (labels[0]), | |
2767 | TYPE_MIN_VALUE (index_type))) | |
2768 | { | |
2769 | tree low, high = CASE_HIGH (labels[len - 1]); | |
2770 | if (!high) | |
2771 | high = CASE_LOW (labels[len - 1]); | |
2772 | if (tree_int_cst_equal (high, TYPE_MAX_VALUE (index_type))) | |
2773 | { | |
2774 | for (i = 1; i < len; i++) | |
2775 | { | |
2776 | high = CASE_LOW (labels[i]); | |
2777 | low = CASE_HIGH (labels[i - 1]); | |
2778 | if (!low) | |
2779 | low = CASE_LOW (labels[i - 1]); | |
2780 | if ((TREE_INT_CST_LOW (low) + 1 | |
2781 | != TREE_INT_CST_LOW (high)) | |
2782 | || (TREE_INT_CST_HIGH (low) | |
2783 | + (TREE_INT_CST_LOW (high) == 0) | |
2784 | != TREE_INT_CST_HIGH (high))) | |
2785 | break; | |
2786 | } | |
2787 | if (i == len) | |
2788 | { | |
2789 | tree label = CASE_LABEL (labels[0]); | |
2790 | default_case = build_case_label (NULL_TREE, NULL_TREE, | |
2791 | label); | |
2792 | } | |
2793 | } | |
2794 | } | |
2795 | } | |
2796 | ||
2797 | if (default_casep) | |
2798 | *default_casep = default_case; | |
2799 | } | |
5be5c238 AM |
2800 | |
2801 | /* Set the location of all statements in SEQ to LOC. */ | |
2802 | ||
2803 | void | |
2804 | gimple_seq_set_location (gimple_seq seq, location_t loc) | |
2805 | { | |
2806 | for (gimple_stmt_iterator i = gsi_start (seq); !gsi_end_p (i); gsi_next (&i)) | |
2807 | gimple_set_location (gsi_stmt (i), loc); | |
2808 | } |