]>
Commit | Line | Data |
---|---|---|
726a989a RB |
1 | /* Gimple IR support functions. |
2 | ||
818ab71a | 3 | Copyright (C) 2007-2016 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" | |
c7131fb2 AM |
25 | #include "backend.h" |
26 | #include "tree.h" | |
27 | #include "gimple.h" | |
c7131fb2 | 28 | #include "ssa.h" |
957060b5 AM |
29 | #include "cgraph.h" |
30 | #include "diagnostic.h" | |
40e23961 | 31 | #include "alias.h" |
40e23961 | 32 | #include "fold-const.h" |
d8a2d370 | 33 | #include "calls.h" |
d8a2d370 | 34 | #include "stor-layout.h" |
2fb9a547 AM |
35 | #include "internal-fn.h" |
36 | #include "tree-eh.h" | |
5be5c238 AM |
37 | #include "gimple-iterator.h" |
38 | #include "gimple-walk.h" | |
45b0be94 | 39 | #include "gimplify.h" |
6626f970 | 40 | #include "target.h" |
726a989a | 41 | |
d7f09764 | 42 | |
f2c4a81c | 43 | /* All the tuples have their operand vector (if present) at the very bottom |
726a989a RB |
44 | of the structure. Therefore, the offset required to find the |
45 | operands vector the size of the structure minus the size of the 1 | |
46 | element tree array at the end (see gimple_ops). */ | |
f2c4a81c RH |
47 | #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) \ |
48 | (HAS_TREE_OP ? sizeof (struct STRUCT) - sizeof (tree) : 0), | |
6bc7bc14 | 49 | EXPORTED_CONST size_t gimple_ops_offset_[] = { |
f2c4a81c RH |
50 | #include "gsstruct.def" |
51 | }; | |
52 | #undef DEFGSSTRUCT | |
53 | ||
c3284718 | 54 | #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) sizeof (struct STRUCT), |
f2c4a81c RH |
55 | static const size_t gsstruct_code_size[] = { |
56 | #include "gsstruct.def" | |
57 | }; | |
58 | #undef DEFGSSTRUCT | |
59 | ||
60 | #define DEFGSCODE(SYM, NAME, GSSCODE) NAME, | |
61 | const char *const gimple_code_name[] = { | |
62 | #include "gimple.def" | |
63 | }; | |
64 | #undef DEFGSCODE | |
65 | ||
66 | #define DEFGSCODE(SYM, NAME, GSSCODE) GSSCODE, | |
67 | EXPORTED_CONST enum gimple_statement_structure_enum gss_for_code_[] = { | |
726a989a RB |
68 | #include "gimple.def" |
69 | }; | |
70 | #undef DEFGSCODE | |
71 | ||
726a989a RB |
72 | /* Gimple stats. */ |
73 | ||
74 | int gimple_alloc_counts[(int) gimple_alloc_kind_all]; | |
75 | int gimple_alloc_sizes[(int) gimple_alloc_kind_all]; | |
76 | ||
77 | /* Keep in sync with gimple.h:enum gimple_alloc_kind. */ | |
78 | static const char * const gimple_alloc_kind_names[] = { | |
79 | "assignments", | |
80 | "phi nodes", | |
81 | "conditionals", | |
726a989a RB |
82 | "everything else" |
83 | }; | |
84 | ||
bde351d5 RB |
85 | /* Static gimple tuple members. */ |
86 | const enum gimple_code gassign::code_; | |
003b40ae RB |
87 | const enum gimple_code gcall::code_; |
88 | const enum gimple_code gcond::code_; | |
bde351d5 RB |
89 | |
90 | ||
726a989a RB |
91 | /* Gimple tuple constructors. |
92 | Note: Any constructor taking a ``gimple_seq'' as a parameter, can | |
93 | be passed a NULL to start with an empty sequence. */ | |
94 | ||
95 | /* Set the code for statement G to CODE. */ | |
96 | ||
97 | static inline void | |
355fe088 | 98 | gimple_set_code (gimple *g, enum gimple_code code) |
726a989a | 99 | { |
daa6e488 | 100 | g->code = code; |
726a989a RB |
101 | } |
102 | ||
726a989a RB |
103 | /* Return the number of bytes needed to hold a GIMPLE statement with |
104 | code CODE. */ | |
105 | ||
f2c4a81c | 106 | static inline size_t |
726a989a RB |
107 | gimple_size (enum gimple_code code) |
108 | { | |
f2c4a81c | 109 | return gsstruct_code_size[gss_for_code (code)]; |
726a989a RB |
110 | } |
111 | ||
726a989a RB |
112 | /* Allocate memory for a GIMPLE statement with code CODE and NUM_OPS |
113 | operands. */ | |
114 | ||
355fe088 | 115 | gimple * |
726a989a RB |
116 | gimple_alloc_stat (enum gimple_code code, unsigned num_ops MEM_STAT_DECL) |
117 | { | |
118 | size_t size; | |
355fe088 | 119 | gimple *stmt; |
726a989a RB |
120 | |
121 | size = gimple_size (code); | |
122 | if (num_ops > 0) | |
123 | size += sizeof (tree) * (num_ops - 1); | |
124 | ||
7aa6d18a SB |
125 | if (GATHER_STATISTICS) |
126 | { | |
127 | enum gimple_alloc_kind kind = gimple_alloc_kind (code); | |
128 | gimple_alloc_counts[(int) kind]++; | |
129 | gimple_alloc_sizes[(int) kind] += size; | |
130 | } | |
726a989a | 131 | |
daa6e488 | 132 | stmt = ggc_alloc_cleared_gimple_statement_stat (size PASS_MEM_STAT); |
726a989a RB |
133 | gimple_set_code (stmt, code); |
134 | gimple_set_num_ops (stmt, num_ops); | |
135 | ||
136 | /* Do not call gimple_set_modified here as it has other side | |
137 | effects and this tuple is still not completely built. */ | |
daa6e488 | 138 | stmt->modified = 1; |
355a7673 | 139 | gimple_init_singleton (stmt); |
726a989a RB |
140 | |
141 | return stmt; | |
142 | } | |
143 | ||
144 | /* Set SUBCODE to be the code of the expression computed by statement G. */ | |
145 | ||
146 | static inline void | |
355fe088 | 147 | gimple_set_subcode (gimple *g, unsigned subcode) |
726a989a RB |
148 | { |
149 | /* We only have 16 bits for the RHS code. Assert that we are not | |
150 | overflowing it. */ | |
151 | gcc_assert (subcode < (1 << 16)); | |
daa6e488 | 152 | g->subcode = subcode; |
726a989a RB |
153 | } |
154 | ||
155 | ||
156 | ||
157 | /* Build a tuple with operands. CODE is the statement to build (which | |
7d05cebb | 158 | must be one of the GIMPLE_WITH_OPS tuples). SUBCODE is the subcode |
b8698a0f | 159 | for the new tuple. NUM_OPS is the number of operands to allocate. */ |
726a989a RB |
160 | |
161 | #define gimple_build_with_ops(c, s, n) \ | |
162 | gimple_build_with_ops_stat (c, s, n MEM_STAT_INFO) | |
163 | ||
355fe088 | 164 | static gimple * |
b5b8b0ac | 165 | gimple_build_with_ops_stat (enum gimple_code code, unsigned subcode, |
726a989a RB |
166 | unsigned num_ops MEM_STAT_DECL) |
167 | { | |
355fe088 | 168 | gimple *s = gimple_alloc_stat (code, num_ops PASS_MEM_STAT); |
726a989a RB |
169 | gimple_set_subcode (s, subcode); |
170 | ||
171 | return s; | |
172 | } | |
173 | ||
174 | ||
175 | /* Build a GIMPLE_RETURN statement returning RETVAL. */ | |
176 | ||
538dd0b7 | 177 | greturn * |
726a989a RB |
178 | gimple_build_return (tree retval) |
179 | { | |
538dd0b7 DM |
180 | greturn *s |
181 | = as_a <greturn *> (gimple_build_with_ops (GIMPLE_RETURN, ERROR_MARK, | |
182 | 2)); | |
726a989a RB |
183 | if (retval) |
184 | gimple_return_set_retval (s, retval); | |
185 | return s; | |
186 | } | |
187 | ||
d086d311 RG |
188 | /* Reset alias information on call S. */ |
189 | ||
190 | void | |
538dd0b7 | 191 | gimple_call_reset_alias_info (gcall *s) |
d086d311 RG |
192 | { |
193 | if (gimple_call_flags (s) & ECF_CONST) | |
194 | memset (gimple_call_use_set (s), 0, sizeof (struct pt_solution)); | |
195 | else | |
196 | pt_solution_reset (gimple_call_use_set (s)); | |
197 | if (gimple_call_flags (s) & (ECF_CONST|ECF_PURE|ECF_NOVOPS)) | |
198 | memset (gimple_call_clobber_set (s), 0, sizeof (struct pt_solution)); | |
199 | else | |
200 | pt_solution_reset (gimple_call_clobber_set (s)); | |
201 | } | |
202 | ||
21860814 JJ |
203 | /* Helper for gimple_build_call, gimple_build_call_valist, |
204 | gimple_build_call_vec and gimple_build_call_from_tree. Build the basic | |
205 | components of a GIMPLE_CALL statement to function FN with NARGS | |
206 | arguments. */ | |
726a989a | 207 | |
538dd0b7 | 208 | static inline gcall * |
726a989a RB |
209 | gimple_build_call_1 (tree fn, unsigned nargs) |
210 | { | |
538dd0b7 DM |
211 | gcall *s |
212 | = as_a <gcall *> (gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, | |
213 | nargs + 3)); | |
7c9577be RG |
214 | if (TREE_CODE (fn) == FUNCTION_DECL) |
215 | fn = build_fold_addr_expr (fn); | |
726a989a | 216 | gimple_set_op (s, 1, fn); |
f20ca725 | 217 | gimple_call_set_fntype (s, TREE_TYPE (TREE_TYPE (fn))); |
d086d311 | 218 | gimple_call_reset_alias_info (s); |
726a989a RB |
219 | return s; |
220 | } | |
221 | ||
222 | ||
223 | /* Build a GIMPLE_CALL statement to function FN with the arguments | |
224 | specified in vector ARGS. */ | |
225 | ||
538dd0b7 | 226 | gcall * |
9771b263 | 227 | gimple_build_call_vec (tree fn, vec<tree> args) |
726a989a RB |
228 | { |
229 | unsigned i; | |
9771b263 | 230 | unsigned nargs = args.length (); |
538dd0b7 | 231 | gcall *call = gimple_build_call_1 (fn, nargs); |
726a989a RB |
232 | |
233 | for (i = 0; i < nargs; i++) | |
9771b263 | 234 | gimple_call_set_arg (call, i, args[i]); |
726a989a RB |
235 | |
236 | return call; | |
237 | } | |
238 | ||
239 | ||
240 | /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of | |
241 | arguments. The ... are the arguments. */ | |
242 | ||
538dd0b7 | 243 | gcall * |
726a989a RB |
244 | gimple_build_call (tree fn, unsigned nargs, ...) |
245 | { | |
246 | va_list ap; | |
538dd0b7 | 247 | gcall *call; |
726a989a RB |
248 | unsigned i; |
249 | ||
250 | gcc_assert (TREE_CODE (fn) == FUNCTION_DECL || is_gimple_call_addr (fn)); | |
251 | ||
252 | call = gimple_build_call_1 (fn, nargs); | |
253 | ||
254 | va_start (ap, nargs); | |
255 | for (i = 0; i < nargs; i++) | |
256 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
257 | va_end (ap); | |
258 | ||
259 | return call; | |
260 | } | |
261 | ||
262 | ||
21860814 JJ |
263 | /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of |
264 | arguments. AP contains the arguments. */ | |
265 | ||
538dd0b7 | 266 | gcall * |
21860814 JJ |
267 | gimple_build_call_valist (tree fn, unsigned nargs, va_list ap) |
268 | { | |
538dd0b7 | 269 | gcall *call; |
21860814 JJ |
270 | unsigned i; |
271 | ||
272 | gcc_assert (TREE_CODE (fn) == FUNCTION_DECL || is_gimple_call_addr (fn)); | |
273 | ||
274 | call = gimple_build_call_1 (fn, nargs); | |
275 | ||
276 | for (i = 0; i < nargs; i++) | |
277 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
278 | ||
279 | return call; | |
280 | } | |
281 | ||
282 | ||
25583c4f RS |
283 | /* Helper for gimple_build_call_internal and gimple_build_call_internal_vec. |
284 | Build the basic components of a GIMPLE_CALL statement to internal | |
285 | function FN with NARGS arguments. */ | |
286 | ||
538dd0b7 | 287 | static inline gcall * |
25583c4f RS |
288 | gimple_build_call_internal_1 (enum internal_fn fn, unsigned nargs) |
289 | { | |
538dd0b7 DM |
290 | gcall *s |
291 | = as_a <gcall *> (gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, | |
292 | nargs + 3)); | |
daa6e488 | 293 | s->subcode |= GF_CALL_INTERNAL; |
25583c4f RS |
294 | gimple_call_set_internal_fn (s, fn); |
295 | gimple_call_reset_alias_info (s); | |
296 | return s; | |
297 | } | |
298 | ||
299 | ||
300 | /* Build a GIMPLE_CALL statement to internal function FN. NARGS is | |
301 | the number of arguments. The ... are the arguments. */ | |
302 | ||
538dd0b7 | 303 | gcall * |
25583c4f RS |
304 | gimple_build_call_internal (enum internal_fn fn, unsigned nargs, ...) |
305 | { | |
306 | va_list ap; | |
538dd0b7 | 307 | gcall *call; |
25583c4f RS |
308 | unsigned i; |
309 | ||
310 | call = gimple_build_call_internal_1 (fn, nargs); | |
311 | va_start (ap, nargs); | |
312 | for (i = 0; i < nargs; i++) | |
313 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
314 | va_end (ap); | |
315 | ||
316 | return call; | |
317 | } | |
318 | ||
319 | ||
320 | /* Build a GIMPLE_CALL statement to internal function FN with the arguments | |
321 | specified in vector ARGS. */ | |
322 | ||
538dd0b7 | 323 | gcall * |
9771b263 | 324 | gimple_build_call_internal_vec (enum internal_fn fn, vec<tree> args) |
25583c4f RS |
325 | { |
326 | unsigned i, nargs; | |
538dd0b7 | 327 | gcall *call; |
25583c4f | 328 | |
9771b263 | 329 | nargs = args.length (); |
25583c4f RS |
330 | call = gimple_build_call_internal_1 (fn, nargs); |
331 | for (i = 0; i < nargs; i++) | |
9771b263 | 332 | gimple_call_set_arg (call, i, args[i]); |
25583c4f RS |
333 | |
334 | return call; | |
335 | } | |
336 | ||
337 | ||
726a989a RB |
338 | /* Build a GIMPLE_CALL statement from CALL_EXPR T. Note that T is |
339 | assumed to be in GIMPLE form already. Minimal checking is done of | |
340 | this fact. */ | |
341 | ||
538dd0b7 | 342 | gcall * |
726a989a RB |
343 | gimple_build_call_from_tree (tree t) |
344 | { | |
345 | unsigned i, nargs; | |
538dd0b7 | 346 | gcall *call; |
726a989a RB |
347 | tree fndecl = get_callee_fndecl (t); |
348 | ||
349 | gcc_assert (TREE_CODE (t) == CALL_EXPR); | |
350 | ||
351 | nargs = call_expr_nargs (t); | |
352 | call = gimple_build_call_1 (fndecl ? fndecl : CALL_EXPR_FN (t), nargs); | |
353 | ||
354 | for (i = 0; i < nargs; i++) | |
355 | gimple_call_set_arg (call, i, CALL_EXPR_ARG (t, i)); | |
356 | ||
357 | gimple_set_block (call, TREE_BLOCK (t)); | |
358 | ||
359 | /* Carry all the CALL_EXPR flags to the new GIMPLE_CALL. */ | |
360 | gimple_call_set_chain (call, CALL_EXPR_STATIC_CHAIN (t)); | |
361 | gimple_call_set_tail (call, CALL_EXPR_TAILCALL (t)); | |
9a385c2d | 362 | gimple_call_set_must_tail (call, CALL_EXPR_MUST_TAIL_CALL (t)); |
726a989a | 363 | gimple_call_set_return_slot_opt (call, CALL_EXPR_RETURN_SLOT_OPT (t)); |
63d2a353 MM |
364 | if (fndecl |
365 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
13e49da9 TV |
366 | && (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_ALLOCA |
367 | || DECL_FUNCTION_CODE (fndecl) == BUILT_IN_ALLOCA_WITH_ALIGN)) | |
63d2a353 MM |
368 | gimple_call_set_alloca_for_var (call, CALL_ALLOCA_FOR_VAR_P (t)); |
369 | else | |
370 | gimple_call_set_from_thunk (call, CALL_FROM_THUNK_P (t)); | |
726a989a | 371 | gimple_call_set_va_arg_pack (call, CALL_EXPR_VA_ARG_PACK (t)); |
9bb1a81b | 372 | gimple_call_set_nothrow (call, TREE_NOTHROW (t)); |
d665b6e5 | 373 | gimple_set_no_warning (call, TREE_NO_WARNING (t)); |
d5e254e1 | 374 | gimple_call_set_with_bounds (call, CALL_WITH_BOUNDS_P (t)); |
726a989a RB |
375 | |
376 | return call; | |
377 | } | |
378 | ||
379 | ||
726a989a RB |
380 | /* Build a GIMPLE_ASSIGN statement. |
381 | ||
382 | LHS of the assignment. | |
383 | RHS of the assignment which can be unary or binary. */ | |
384 | ||
538dd0b7 | 385 | gassign * |
0d0e4a03 | 386 | gimple_build_assign (tree lhs, tree rhs MEM_STAT_DECL) |
726a989a RB |
387 | { |
388 | enum tree_code subcode; | |
0354c0c7 | 389 | tree op1, op2, op3; |
726a989a | 390 | |
d1e2bb2d | 391 | extract_ops_from_tree (rhs, &subcode, &op1, &op2, &op3); |
0d0e4a03 | 392 | return gimple_build_assign (lhs, subcode, op1, op2, op3 PASS_MEM_STAT); |
726a989a RB |
393 | } |
394 | ||
395 | ||
7d05cebb | 396 | /* Build a GIMPLE_ASSIGN statement with subcode SUBCODE and operands |
0d0e4a03 | 397 | OP1, OP2 and OP3. */ |
726a989a | 398 | |
0d0e4a03 JJ |
399 | static inline gassign * |
400 | gimple_build_assign_1 (tree lhs, enum tree_code subcode, tree op1, | |
401 | tree op2, tree op3 MEM_STAT_DECL) | |
726a989a RB |
402 | { |
403 | unsigned num_ops; | |
538dd0b7 | 404 | gassign *p; |
726a989a RB |
405 | |
406 | /* Need 1 operand for LHS and 1 or 2 for the RHS (depending on the | |
407 | code). */ | |
408 | num_ops = get_gimple_rhs_num_ops (subcode) + 1; | |
b8698a0f | 409 | |
538dd0b7 DM |
410 | p = as_a <gassign *> ( |
411 | gimple_build_with_ops_stat (GIMPLE_ASSIGN, (unsigned)subcode, num_ops | |
412 | PASS_MEM_STAT)); | |
726a989a RB |
413 | gimple_assign_set_lhs (p, lhs); |
414 | gimple_assign_set_rhs1 (p, op1); | |
415 | if (op2) | |
416 | { | |
417 | gcc_assert (num_ops > 2); | |
418 | gimple_assign_set_rhs2 (p, op2); | |
419 | } | |
420 | ||
0354c0c7 BS |
421 | if (op3) |
422 | { | |
423 | gcc_assert (num_ops > 3); | |
424 | gimple_assign_set_rhs3 (p, op3); | |
425 | } | |
426 | ||
726a989a RB |
427 | return p; |
428 | } | |
429 | ||
0d0e4a03 JJ |
430 | /* Build a GIMPLE_ASSIGN statement with subcode SUBCODE and operands |
431 | OP1, OP2 and OP3. */ | |
432 | ||
433 | gassign * | |
434 | gimple_build_assign (tree lhs, enum tree_code subcode, tree op1, | |
435 | tree op2, tree op3 MEM_STAT_DECL) | |
436 | { | |
437 | return gimple_build_assign_1 (lhs, subcode, op1, op2, op3 PASS_MEM_STAT); | |
438 | } | |
439 | ||
440 | /* Build a GIMPLE_ASSIGN statement with subcode SUBCODE and operands | |
441 | OP1 and OP2. */ | |
442 | ||
538dd0b7 | 443 | gassign * |
0d0e4a03 JJ |
444 | gimple_build_assign (tree lhs, enum tree_code subcode, tree op1, |
445 | tree op2 MEM_STAT_DECL) | |
73804b12 | 446 | { |
0d0e4a03 JJ |
447 | return gimple_build_assign_1 (lhs, subcode, op1, op2, NULL_TREE |
448 | PASS_MEM_STAT); | |
73804b12 RG |
449 | } |
450 | ||
0d0e4a03 JJ |
451 | /* Build a GIMPLE_ASSIGN statement with subcode SUBCODE and operand OP1. */ |
452 | ||
538dd0b7 | 453 | gassign * |
0d0e4a03 | 454 | gimple_build_assign (tree lhs, enum tree_code subcode, tree op1 MEM_STAT_DECL) |
00d66391 | 455 | { |
0d0e4a03 JJ |
456 | return gimple_build_assign_1 (lhs, subcode, op1, NULL_TREE, NULL_TREE |
457 | PASS_MEM_STAT); | |
00d66391 JJ |
458 | } |
459 | ||
726a989a | 460 | |
726a989a RB |
461 | /* Build a GIMPLE_COND statement. |
462 | ||
463 | PRED is the condition used to compare LHS and the RHS. | |
464 | T_LABEL is the label to jump to if the condition is true. | |
465 | F_LABEL is the label to jump to otherwise. */ | |
466 | ||
538dd0b7 | 467 | gcond * |
726a989a RB |
468 | gimple_build_cond (enum tree_code pred_code, tree lhs, tree rhs, |
469 | tree t_label, tree f_label) | |
470 | { | |
538dd0b7 | 471 | gcond *p; |
726a989a RB |
472 | |
473 | gcc_assert (TREE_CODE_CLASS (pred_code) == tcc_comparison); | |
538dd0b7 | 474 | p = as_a <gcond *> (gimple_build_with_ops (GIMPLE_COND, pred_code, 4)); |
726a989a RB |
475 | gimple_cond_set_lhs (p, lhs); |
476 | gimple_cond_set_rhs (p, rhs); | |
477 | gimple_cond_set_true_label (p, t_label); | |
478 | gimple_cond_set_false_label (p, f_label); | |
479 | return p; | |
480 | } | |
481 | ||
726a989a RB |
482 | /* Build a GIMPLE_COND statement from the conditional expression tree |
483 | COND. T_LABEL and F_LABEL are as in gimple_build_cond. */ | |
484 | ||
538dd0b7 | 485 | gcond * |
726a989a RB |
486 | gimple_build_cond_from_tree (tree cond, tree t_label, tree f_label) |
487 | { | |
488 | enum tree_code code; | |
489 | tree lhs, rhs; | |
490 | ||
491 | gimple_cond_get_ops_from_tree (cond, &code, &lhs, &rhs); | |
492 | return gimple_build_cond (code, lhs, rhs, t_label, f_label); | |
493 | } | |
494 | ||
495 | /* Set code, lhs, and rhs of a GIMPLE_COND from a suitable | |
496 | boolean expression tree COND. */ | |
497 | ||
498 | void | |
538dd0b7 | 499 | gimple_cond_set_condition_from_tree (gcond *stmt, tree cond) |
726a989a RB |
500 | { |
501 | enum tree_code code; | |
502 | tree lhs, rhs; | |
503 | ||
504 | gimple_cond_get_ops_from_tree (cond, &code, &lhs, &rhs); | |
505 | gimple_cond_set_condition (stmt, code, lhs, rhs); | |
506 | } | |
507 | ||
508 | /* Build a GIMPLE_LABEL statement for LABEL. */ | |
509 | ||
538dd0b7 | 510 | glabel * |
726a989a RB |
511 | gimple_build_label (tree label) |
512 | { | |
538dd0b7 DM |
513 | glabel *p |
514 | = as_a <glabel *> (gimple_build_with_ops (GIMPLE_LABEL, ERROR_MARK, 1)); | |
726a989a RB |
515 | gimple_label_set_label (p, label); |
516 | return p; | |
517 | } | |
518 | ||
519 | /* Build a GIMPLE_GOTO statement to label DEST. */ | |
520 | ||
538dd0b7 | 521 | ggoto * |
726a989a RB |
522 | gimple_build_goto (tree dest) |
523 | { | |
538dd0b7 DM |
524 | ggoto *p |
525 | = as_a <ggoto *> (gimple_build_with_ops (GIMPLE_GOTO, ERROR_MARK, 1)); | |
726a989a RB |
526 | gimple_goto_set_dest (p, dest); |
527 | return p; | |
528 | } | |
529 | ||
530 | ||
531 | /* Build a GIMPLE_NOP statement. */ | |
532 | ||
355fe088 | 533 | gimple * |
726a989a RB |
534 | gimple_build_nop (void) |
535 | { | |
536 | return gimple_alloc (GIMPLE_NOP, 0); | |
537 | } | |
538 | ||
539 | ||
540 | /* Build a GIMPLE_BIND statement. | |
541 | VARS are the variables in BODY. | |
542 | BLOCK is the containing block. */ | |
543 | ||
538dd0b7 | 544 | gbind * |
726a989a RB |
545 | gimple_build_bind (tree vars, gimple_seq body, tree block) |
546 | { | |
538dd0b7 | 547 | gbind *p = as_a <gbind *> (gimple_alloc (GIMPLE_BIND, 0)); |
726a989a RB |
548 | gimple_bind_set_vars (p, vars); |
549 | if (body) | |
550 | gimple_bind_set_body (p, body); | |
551 | if (block) | |
552 | gimple_bind_set_block (p, block); | |
553 | return p; | |
554 | } | |
555 | ||
556 | /* Helper function to set the simple fields of a asm stmt. | |
557 | ||
558 | STRING is a pointer to a string that is the asm blocks assembly code. | |
559 | NINPUT is the number of register inputs. | |
560 | NOUTPUT is the number of register outputs. | |
561 | NCLOBBERS is the number of clobbered registers. | |
562 | */ | |
563 | ||
538dd0b7 | 564 | static inline gasm * |
b8698a0f | 565 | gimple_build_asm_1 (const char *string, unsigned ninputs, unsigned noutputs, |
1c384bf1 | 566 | unsigned nclobbers, unsigned nlabels) |
726a989a | 567 | { |
538dd0b7 | 568 | gasm *p; |
726a989a RB |
569 | int size = strlen (string); |
570 | ||
1c384bf1 RH |
571 | /* ASMs with labels cannot have outputs. This should have been |
572 | enforced by the front end. */ | |
573 | gcc_assert (nlabels == 0 || noutputs == 0); | |
574 | ||
538dd0b7 | 575 | p = as_a <gasm *> ( |
daa6e488 DM |
576 | gimple_build_with_ops (GIMPLE_ASM, ERROR_MARK, |
577 | ninputs + noutputs + nclobbers + nlabels)); | |
726a989a | 578 | |
daa6e488 DM |
579 | p->ni = ninputs; |
580 | p->no = noutputs; | |
581 | p->nc = nclobbers; | |
582 | p->nl = nlabels; | |
583 | p->string = ggc_alloc_string (string, size); | |
726a989a | 584 | |
7aa6d18a SB |
585 | if (GATHER_STATISTICS) |
586 | gimple_alloc_sizes[(int) gimple_alloc_kind (GIMPLE_ASM)] += size; | |
b8698a0f | 587 | |
726a989a RB |
588 | return p; |
589 | } | |
590 | ||
591 | /* Build a GIMPLE_ASM statement. | |
592 | ||
593 | STRING is the assembly code. | |
594 | NINPUT is the number of register inputs. | |
595 | NOUTPUT is the number of register outputs. | |
596 | NCLOBBERS is the number of clobbered registers. | |
597 | INPUTS is a vector of the input register parameters. | |
598 | OUTPUTS is a vector of the output register parameters. | |
1c384bf1 RH |
599 | CLOBBERS is a vector of the clobbered register parameters. |
600 | LABELS is a vector of destination labels. */ | |
726a989a | 601 | |
538dd0b7 | 602 | gasm * |
9771b263 DN |
603 | gimple_build_asm_vec (const char *string, vec<tree, va_gc> *inputs, |
604 | vec<tree, va_gc> *outputs, vec<tree, va_gc> *clobbers, | |
605 | vec<tree, va_gc> *labels) | |
726a989a | 606 | { |
538dd0b7 | 607 | gasm *p; |
726a989a RB |
608 | unsigned i; |
609 | ||
610 | p = gimple_build_asm_1 (string, | |
9771b263 DN |
611 | vec_safe_length (inputs), |
612 | vec_safe_length (outputs), | |
613 | vec_safe_length (clobbers), | |
614 | vec_safe_length (labels)); | |
b8698a0f | 615 | |
9771b263 DN |
616 | for (i = 0; i < vec_safe_length (inputs); i++) |
617 | gimple_asm_set_input_op (p, i, (*inputs)[i]); | |
726a989a | 618 | |
9771b263 DN |
619 | for (i = 0; i < vec_safe_length (outputs); i++) |
620 | gimple_asm_set_output_op (p, i, (*outputs)[i]); | |
726a989a | 621 | |
9771b263 DN |
622 | for (i = 0; i < vec_safe_length (clobbers); i++) |
623 | gimple_asm_set_clobber_op (p, i, (*clobbers)[i]); | |
b8698a0f | 624 | |
9771b263 DN |
625 | for (i = 0; i < vec_safe_length (labels); i++) |
626 | gimple_asm_set_label_op (p, i, (*labels)[i]); | |
b8698a0f | 627 | |
726a989a RB |
628 | return p; |
629 | } | |
630 | ||
631 | /* Build a GIMPLE_CATCH statement. | |
632 | ||
633 | TYPES are the catch types. | |
634 | HANDLER is the exception handler. */ | |
635 | ||
538dd0b7 | 636 | gcatch * |
726a989a RB |
637 | gimple_build_catch (tree types, gimple_seq handler) |
638 | { | |
538dd0b7 | 639 | gcatch *p = as_a <gcatch *> (gimple_alloc (GIMPLE_CATCH, 0)); |
726a989a RB |
640 | gimple_catch_set_types (p, types); |
641 | if (handler) | |
642 | gimple_catch_set_handler (p, handler); | |
643 | ||
644 | return p; | |
645 | } | |
646 | ||
647 | /* Build a GIMPLE_EH_FILTER statement. | |
648 | ||
649 | TYPES are the filter's types. | |
650 | FAILURE is the filter's failure action. */ | |
651 | ||
538dd0b7 | 652 | geh_filter * |
726a989a RB |
653 | gimple_build_eh_filter (tree types, gimple_seq failure) |
654 | { | |
538dd0b7 | 655 | geh_filter *p = as_a <geh_filter *> (gimple_alloc (GIMPLE_EH_FILTER, 0)); |
726a989a RB |
656 | gimple_eh_filter_set_types (p, types); |
657 | if (failure) | |
658 | gimple_eh_filter_set_failure (p, failure); | |
659 | ||
660 | return p; | |
661 | } | |
662 | ||
1d65f45c RH |
663 | /* Build a GIMPLE_EH_MUST_NOT_THROW statement. */ |
664 | ||
538dd0b7 | 665 | geh_mnt * |
1d65f45c RH |
666 | gimple_build_eh_must_not_throw (tree decl) |
667 | { | |
538dd0b7 | 668 | geh_mnt *p = as_a <geh_mnt *> (gimple_alloc (GIMPLE_EH_MUST_NOT_THROW, 0)); |
1d65f45c RH |
669 | |
670 | gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); | |
671 | gcc_assert (flags_from_decl_or_type (decl) & ECF_NORETURN); | |
d7f09764 | 672 | gimple_eh_must_not_throw_set_fndecl (p, decl); |
1d65f45c RH |
673 | |
674 | return p; | |
675 | } | |
676 | ||
0a35513e AH |
677 | /* Build a GIMPLE_EH_ELSE statement. */ |
678 | ||
538dd0b7 | 679 | geh_else * |
0a35513e AH |
680 | gimple_build_eh_else (gimple_seq n_body, gimple_seq e_body) |
681 | { | |
538dd0b7 | 682 | geh_else *p = as_a <geh_else *> (gimple_alloc (GIMPLE_EH_ELSE, 0)); |
0a35513e AH |
683 | gimple_eh_else_set_n_body (p, n_body); |
684 | gimple_eh_else_set_e_body (p, e_body); | |
685 | return p; | |
686 | } | |
687 | ||
726a989a RB |
688 | /* Build a GIMPLE_TRY statement. |
689 | ||
690 | EVAL is the expression to evaluate. | |
691 | CLEANUP is the cleanup expression. | |
692 | KIND is either GIMPLE_TRY_CATCH or GIMPLE_TRY_FINALLY depending on | |
693 | whether this is a try/catch or a try/finally respectively. */ | |
694 | ||
538dd0b7 | 695 | gtry * |
726a989a RB |
696 | gimple_build_try (gimple_seq eval, gimple_seq cleanup, |
697 | enum gimple_try_flags kind) | |
698 | { | |
538dd0b7 | 699 | gtry *p; |
726a989a RB |
700 | |
701 | gcc_assert (kind == GIMPLE_TRY_CATCH || kind == GIMPLE_TRY_FINALLY); | |
538dd0b7 | 702 | p = as_a <gtry *> (gimple_alloc (GIMPLE_TRY, 0)); |
726a989a RB |
703 | gimple_set_subcode (p, kind); |
704 | if (eval) | |
705 | gimple_try_set_eval (p, eval); | |
706 | if (cleanup) | |
707 | gimple_try_set_cleanup (p, cleanup); | |
708 | ||
709 | return p; | |
710 | } | |
711 | ||
712 | /* Construct a GIMPLE_WITH_CLEANUP_EXPR statement. | |
713 | ||
714 | CLEANUP is the cleanup expression. */ | |
715 | ||
355fe088 | 716 | gimple * |
726a989a RB |
717 | gimple_build_wce (gimple_seq cleanup) |
718 | { | |
355fe088 | 719 | gimple *p = gimple_alloc (GIMPLE_WITH_CLEANUP_EXPR, 0); |
726a989a RB |
720 | if (cleanup) |
721 | gimple_wce_set_cleanup (p, cleanup); | |
722 | ||
723 | return p; | |
724 | } | |
725 | ||
726 | ||
1d65f45c | 727 | /* Build a GIMPLE_RESX statement. */ |
726a989a | 728 | |
538dd0b7 | 729 | gresx * |
726a989a RB |
730 | gimple_build_resx (int region) |
731 | { | |
538dd0b7 DM |
732 | gresx *p |
733 | = as_a <gresx *> (gimple_build_with_ops (GIMPLE_RESX, ERROR_MARK, 0)); | |
daa6e488 | 734 | p->region = region; |
726a989a RB |
735 | return p; |
736 | } | |
737 | ||
738 | ||
739 | /* The helper for constructing a gimple switch statement. | |
740 | INDEX is the switch's index. | |
741 | NLABELS is the number of labels in the switch excluding the default. | |
742 | DEFAULT_LABEL is the default label for the switch statement. */ | |
743 | ||
538dd0b7 | 744 | gswitch * |
1d65f45c | 745 | gimple_build_switch_nlabels (unsigned nlabels, tree index, tree default_label) |
726a989a RB |
746 | { |
747 | /* nlabels + 1 default label + 1 index. */ | |
fd8d363e | 748 | gcc_checking_assert (default_label); |
538dd0b7 DM |
749 | gswitch *p = as_a <gswitch *> (gimple_build_with_ops (GIMPLE_SWITCH, |
750 | ERROR_MARK, | |
751 | 1 + 1 + nlabels)); | |
726a989a | 752 | gimple_switch_set_index (p, index); |
fd8d363e | 753 | gimple_switch_set_default_label (p, default_label); |
726a989a RB |
754 | return p; |
755 | } | |
756 | ||
726a989a RB |
757 | /* Build a GIMPLE_SWITCH statement. |
758 | ||
759 | INDEX is the switch's index. | |
760 | DEFAULT_LABEL is the default label | |
761 | ARGS is a vector of labels excluding the default. */ | |
762 | ||
538dd0b7 | 763 | gswitch * |
9771b263 | 764 | gimple_build_switch (tree index, tree default_label, vec<tree> args) |
726a989a | 765 | { |
9771b263 | 766 | unsigned i, nlabels = args.length (); |
fd8d363e | 767 | |
538dd0b7 | 768 | gswitch *p = gimple_build_switch_nlabels (nlabels, index, default_label); |
726a989a | 769 | |
1d65f45c | 770 | /* Copy the labels from the vector to the switch statement. */ |
1d65f45c | 771 | for (i = 0; i < nlabels; i++) |
9771b263 | 772 | gimple_switch_set_label (p, i + 1, args[i]); |
726a989a RB |
773 | |
774 | return p; | |
775 | } | |
776 | ||
1d65f45c RH |
777 | /* Build a GIMPLE_EH_DISPATCH statement. */ |
778 | ||
538dd0b7 | 779 | geh_dispatch * |
1d65f45c RH |
780 | gimple_build_eh_dispatch (int region) |
781 | { | |
538dd0b7 DM |
782 | geh_dispatch *p |
783 | = as_a <geh_dispatch *> ( | |
784 | gimple_build_with_ops (GIMPLE_EH_DISPATCH, ERROR_MARK, 0)); | |
daa6e488 | 785 | p->region = region; |
1d65f45c RH |
786 | return p; |
787 | } | |
726a989a | 788 | |
b5b8b0ac AO |
789 | /* Build a new GIMPLE_DEBUG_BIND statement. |
790 | ||
791 | VAR is bound to VALUE; block and location are taken from STMT. */ | |
792 | ||
538dd0b7 | 793 | gdebug * |
355fe088 | 794 | gimple_build_debug_bind_stat (tree var, tree value, gimple *stmt MEM_STAT_DECL) |
b5b8b0ac | 795 | { |
538dd0b7 DM |
796 | gdebug *p |
797 | = as_a <gdebug *> (gimple_build_with_ops_stat (GIMPLE_DEBUG, | |
798 | (unsigned)GIMPLE_DEBUG_BIND, 2 | |
799 | PASS_MEM_STAT)); | |
b5b8b0ac AO |
800 | gimple_debug_bind_set_var (p, var); |
801 | gimple_debug_bind_set_value (p, value); | |
802 | if (stmt) | |
5368224f | 803 | gimple_set_location (p, gimple_location (stmt)); |
b5b8b0ac AO |
804 | |
805 | return p; | |
806 | } | |
807 | ||
808 | ||
ddb555ed JJ |
809 | /* Build a new GIMPLE_DEBUG_SOURCE_BIND statement. |
810 | ||
811 | VAR is bound to VALUE; block and location are taken from STMT. */ | |
812 | ||
538dd0b7 | 813 | gdebug * |
ddb555ed | 814 | gimple_build_debug_source_bind_stat (tree var, tree value, |
355fe088 | 815 | gimple *stmt MEM_STAT_DECL) |
ddb555ed | 816 | { |
538dd0b7 DM |
817 | gdebug *p |
818 | = as_a <gdebug *> ( | |
819 | gimple_build_with_ops_stat (GIMPLE_DEBUG, | |
820 | (unsigned)GIMPLE_DEBUG_SOURCE_BIND, 2 | |
821 | PASS_MEM_STAT)); | |
ddb555ed JJ |
822 | |
823 | gimple_debug_source_bind_set_var (p, var); | |
824 | gimple_debug_source_bind_set_value (p, value); | |
825 | if (stmt) | |
5368224f | 826 | gimple_set_location (p, gimple_location (stmt)); |
ddb555ed JJ |
827 | |
828 | return p; | |
829 | } | |
830 | ||
831 | ||
726a989a RB |
832 | /* Build a GIMPLE_OMP_CRITICAL statement. |
833 | ||
834 | BODY is the sequence of statements for which only one thread can execute. | |
d9a6bd32 JJ |
835 | NAME is optional identifier for this critical block. |
836 | CLAUSES are clauses for this critical block. */ | |
726a989a | 837 | |
538dd0b7 | 838 | gomp_critical * |
d9a6bd32 | 839 | gimple_build_omp_critical (gimple_seq body, tree name, tree clauses) |
726a989a | 840 | { |
538dd0b7 DM |
841 | gomp_critical *p |
842 | = as_a <gomp_critical *> (gimple_alloc (GIMPLE_OMP_CRITICAL, 0)); | |
726a989a | 843 | gimple_omp_critical_set_name (p, name); |
d9a6bd32 | 844 | gimple_omp_critical_set_clauses (p, clauses); |
726a989a RB |
845 | if (body) |
846 | gimple_omp_set_body (p, body); | |
847 | ||
848 | return p; | |
849 | } | |
850 | ||
851 | /* Build a GIMPLE_OMP_FOR statement. | |
852 | ||
853 | BODY is sequence of statements inside the for loop. | |
74bf76ed | 854 | KIND is the `for' variant. |
41dbbb37 | 855 | CLAUSES, are any of the construct's clauses. |
726a989a RB |
856 | COLLAPSE is the collapse count. |
857 | PRE_BODY is the sequence of statements that are loop invariant. */ | |
858 | ||
538dd0b7 | 859 | gomp_for * |
74bf76ed | 860 | gimple_build_omp_for (gimple_seq body, int kind, tree clauses, size_t collapse, |
726a989a RB |
861 | gimple_seq pre_body) |
862 | { | |
538dd0b7 | 863 | gomp_for *p = as_a <gomp_for *> (gimple_alloc (GIMPLE_OMP_FOR, 0)); |
726a989a RB |
864 | if (body) |
865 | gimple_omp_set_body (p, body); | |
866 | gimple_omp_for_set_clauses (p, clauses); | |
74bf76ed | 867 | gimple_omp_for_set_kind (p, kind); |
daa6e488 | 868 | p->collapse = collapse; |
766090c2 | 869 | p->iter = ggc_cleared_vec_alloc<gimple_omp_for_iter> (collapse); |
daa6e488 | 870 | |
726a989a RB |
871 | if (pre_body) |
872 | gimple_omp_for_set_pre_body (p, pre_body); | |
873 | ||
874 | return p; | |
875 | } | |
876 | ||
877 | ||
878 | /* Build a GIMPLE_OMP_PARALLEL statement. | |
879 | ||
880 | BODY is sequence of statements which are executed in parallel. | |
881 | CLAUSES, are the OMP parallel construct's clauses. | |
882 | CHILD_FN is the function created for the parallel threads to execute. | |
883 | DATA_ARG are the shared data argument(s). */ | |
884 | ||
538dd0b7 | 885 | gomp_parallel * |
b8698a0f | 886 | gimple_build_omp_parallel (gimple_seq body, tree clauses, tree child_fn, |
726a989a RB |
887 | tree data_arg) |
888 | { | |
538dd0b7 DM |
889 | gomp_parallel *p |
890 | = as_a <gomp_parallel *> (gimple_alloc (GIMPLE_OMP_PARALLEL, 0)); | |
726a989a RB |
891 | if (body) |
892 | gimple_omp_set_body (p, body); | |
893 | gimple_omp_parallel_set_clauses (p, clauses); | |
894 | gimple_omp_parallel_set_child_fn (p, child_fn); | |
895 | gimple_omp_parallel_set_data_arg (p, data_arg); | |
896 | ||
897 | return p; | |
898 | } | |
899 | ||
900 | ||
901 | /* Build a GIMPLE_OMP_TASK statement. | |
902 | ||
903 | BODY is sequence of statements which are executed by the explicit task. | |
904 | CLAUSES, are the OMP parallel construct's clauses. | |
905 | CHILD_FN is the function created for the parallel threads to execute. | |
906 | DATA_ARG are the shared data argument(s). | |
907 | COPY_FN is the optional function for firstprivate initialization. | |
908 | ARG_SIZE and ARG_ALIGN are size and alignment of the data block. */ | |
909 | ||
538dd0b7 | 910 | gomp_task * |
726a989a RB |
911 | gimple_build_omp_task (gimple_seq body, tree clauses, tree child_fn, |
912 | tree data_arg, tree copy_fn, tree arg_size, | |
913 | tree arg_align) | |
914 | { | |
538dd0b7 | 915 | gomp_task *p = as_a <gomp_task *> (gimple_alloc (GIMPLE_OMP_TASK, 0)); |
726a989a RB |
916 | if (body) |
917 | gimple_omp_set_body (p, body); | |
918 | gimple_omp_task_set_clauses (p, clauses); | |
919 | gimple_omp_task_set_child_fn (p, child_fn); | |
920 | gimple_omp_task_set_data_arg (p, data_arg); | |
921 | gimple_omp_task_set_copy_fn (p, copy_fn); | |
922 | gimple_omp_task_set_arg_size (p, arg_size); | |
923 | gimple_omp_task_set_arg_align (p, arg_align); | |
924 | ||
925 | return p; | |
926 | } | |
927 | ||
928 | ||
929 | /* Build a GIMPLE_OMP_SECTION statement for a sections statement. | |
930 | ||
931 | BODY is the sequence of statements in the section. */ | |
932 | ||
355fe088 | 933 | gimple * |
726a989a RB |
934 | gimple_build_omp_section (gimple_seq body) |
935 | { | |
355fe088 | 936 | gimple *p = gimple_alloc (GIMPLE_OMP_SECTION, 0); |
726a989a RB |
937 | if (body) |
938 | gimple_omp_set_body (p, body); | |
939 | ||
940 | return p; | |
941 | } | |
942 | ||
943 | ||
944 | /* Build a GIMPLE_OMP_MASTER statement. | |
945 | ||
946 | BODY is the sequence of statements to be executed by just the master. */ | |
947 | ||
355fe088 | 948 | gimple * |
726a989a RB |
949 | gimple_build_omp_master (gimple_seq body) |
950 | { | |
355fe088 | 951 | gimple *p = gimple_alloc (GIMPLE_OMP_MASTER, 0); |
726a989a RB |
952 | if (body) |
953 | gimple_omp_set_body (p, body); | |
954 | ||
955 | return p; | |
956 | } | |
957 | ||
b2b40051 MJ |
958 | /* Build a GIMPLE_OMP_GRID_BODY statement. |
959 | ||
960 | BODY is the sequence of statements to be executed by the kernel. */ | |
961 | ||
962 | gimple * | |
963 | gimple_build_omp_grid_body (gimple_seq body) | |
964 | { | |
965 | gimple *p = gimple_alloc (GIMPLE_OMP_GRID_BODY, 0); | |
966 | if (body) | |
967 | gimple_omp_set_body (p, body); | |
968 | ||
969 | return p; | |
970 | } | |
726a989a | 971 | |
acf0174b JJ |
972 | /* Build a GIMPLE_OMP_TASKGROUP statement. |
973 | ||
974 | BODY is the sequence of statements to be executed by the taskgroup | |
975 | construct. */ | |
976 | ||
355fe088 | 977 | gimple * |
acf0174b JJ |
978 | gimple_build_omp_taskgroup (gimple_seq body) |
979 | { | |
355fe088 | 980 | gimple *p = gimple_alloc (GIMPLE_OMP_TASKGROUP, 0); |
acf0174b JJ |
981 | if (body) |
982 | gimple_omp_set_body (p, body); | |
983 | ||
984 | return p; | |
985 | } | |
986 | ||
987 | ||
726a989a RB |
988 | /* Build a GIMPLE_OMP_CONTINUE statement. |
989 | ||
990 | CONTROL_DEF is the definition of the control variable. | |
991 | CONTROL_USE is the use of the control variable. */ | |
992 | ||
538dd0b7 | 993 | gomp_continue * |
726a989a RB |
994 | gimple_build_omp_continue (tree control_def, tree control_use) |
995 | { | |
538dd0b7 DM |
996 | gomp_continue *p |
997 | = as_a <gomp_continue *> (gimple_alloc (GIMPLE_OMP_CONTINUE, 0)); | |
726a989a RB |
998 | gimple_omp_continue_set_control_def (p, control_def); |
999 | gimple_omp_continue_set_control_use (p, control_use); | |
1000 | return p; | |
1001 | } | |
1002 | ||
1003 | /* Build a GIMPLE_OMP_ORDERED statement. | |
1004 | ||
1005 | BODY is the sequence of statements inside a loop that will executed in | |
d9a6bd32 JJ |
1006 | sequence. |
1007 | CLAUSES are clauses for this statement. */ | |
726a989a | 1008 | |
d9a6bd32 JJ |
1009 | gomp_ordered * |
1010 | gimple_build_omp_ordered (gimple_seq body, tree clauses) | |
726a989a | 1011 | { |
d9a6bd32 JJ |
1012 | gomp_ordered *p |
1013 | = as_a <gomp_ordered *> (gimple_alloc (GIMPLE_OMP_ORDERED, 0)); | |
1014 | gimple_omp_ordered_set_clauses (p, clauses); | |
726a989a RB |
1015 | if (body) |
1016 | gimple_omp_set_body (p, body); | |
1017 | ||
1018 | return p; | |
1019 | } | |
1020 | ||
1021 | ||
1022 | /* Build a GIMPLE_OMP_RETURN statement. | |
1023 | WAIT_P is true if this is a non-waiting return. */ | |
1024 | ||
355fe088 | 1025 | gimple * |
726a989a RB |
1026 | gimple_build_omp_return (bool wait_p) |
1027 | { | |
355fe088 | 1028 | gimple *p = gimple_alloc (GIMPLE_OMP_RETURN, 0); |
726a989a RB |
1029 | if (wait_p) |
1030 | gimple_omp_return_set_nowait (p); | |
1031 | ||
1032 | return p; | |
1033 | } | |
1034 | ||
1035 | ||
1036 | /* Build a GIMPLE_OMP_SECTIONS statement. | |
1037 | ||
1038 | BODY is a sequence of section statements. | |
1039 | CLAUSES are any of the OMP sections contsruct's clauses: private, | |
1040 | firstprivate, lastprivate, reduction, and nowait. */ | |
1041 | ||
538dd0b7 | 1042 | gomp_sections * |
726a989a RB |
1043 | gimple_build_omp_sections (gimple_seq body, tree clauses) |
1044 | { | |
538dd0b7 DM |
1045 | gomp_sections *p |
1046 | = as_a <gomp_sections *> (gimple_alloc (GIMPLE_OMP_SECTIONS, 0)); | |
726a989a RB |
1047 | if (body) |
1048 | gimple_omp_set_body (p, body); | |
1049 | gimple_omp_sections_set_clauses (p, clauses); | |
1050 | ||
1051 | return p; | |
1052 | } | |
1053 | ||
1054 | ||
1055 | /* Build a GIMPLE_OMP_SECTIONS_SWITCH. */ | |
1056 | ||
355fe088 | 1057 | gimple * |
726a989a RB |
1058 | gimple_build_omp_sections_switch (void) |
1059 | { | |
1060 | return gimple_alloc (GIMPLE_OMP_SECTIONS_SWITCH, 0); | |
1061 | } | |
1062 | ||
1063 | ||
1064 | /* Build a GIMPLE_OMP_SINGLE statement. | |
1065 | ||
1066 | BODY is the sequence of statements that will be executed once. | |
1067 | CLAUSES are any of the OMP single construct's clauses: private, firstprivate, | |
1068 | copyprivate, nowait. */ | |
1069 | ||
538dd0b7 | 1070 | gomp_single * |
726a989a RB |
1071 | gimple_build_omp_single (gimple_seq body, tree clauses) |
1072 | { | |
538dd0b7 DM |
1073 | gomp_single *p |
1074 | = as_a <gomp_single *> (gimple_alloc (GIMPLE_OMP_SINGLE, 0)); | |
726a989a RB |
1075 | if (body) |
1076 | gimple_omp_set_body (p, body); | |
1077 | gimple_omp_single_set_clauses (p, clauses); | |
1078 | ||
1079 | return p; | |
1080 | } | |
1081 | ||
1082 | ||
acf0174b JJ |
1083 | /* Build a GIMPLE_OMP_TARGET statement. |
1084 | ||
1085 | BODY is the sequence of statements that will be executed. | |
41dbbb37 TS |
1086 | KIND is the kind of the region. |
1087 | CLAUSES are any of the construct's clauses. */ | |
acf0174b | 1088 | |
538dd0b7 | 1089 | gomp_target * |
acf0174b JJ |
1090 | gimple_build_omp_target (gimple_seq body, int kind, tree clauses) |
1091 | { | |
538dd0b7 DM |
1092 | gomp_target *p |
1093 | = as_a <gomp_target *> (gimple_alloc (GIMPLE_OMP_TARGET, 0)); | |
acf0174b JJ |
1094 | if (body) |
1095 | gimple_omp_set_body (p, body); | |
1096 | gimple_omp_target_set_clauses (p, clauses); | |
1097 | gimple_omp_target_set_kind (p, kind); | |
1098 | ||
1099 | return p; | |
1100 | } | |
1101 | ||
1102 | ||
1103 | /* Build a GIMPLE_OMP_TEAMS statement. | |
1104 | ||
1105 | BODY is the sequence of statements that will be executed. | |
1106 | CLAUSES are any of the OMP teams construct's clauses. */ | |
1107 | ||
538dd0b7 | 1108 | gomp_teams * |
acf0174b JJ |
1109 | gimple_build_omp_teams (gimple_seq body, tree clauses) |
1110 | { | |
538dd0b7 | 1111 | gomp_teams *p = as_a <gomp_teams *> (gimple_alloc (GIMPLE_OMP_TEAMS, 0)); |
acf0174b JJ |
1112 | if (body) |
1113 | gimple_omp_set_body (p, body); | |
1114 | gimple_omp_teams_set_clauses (p, clauses); | |
1115 | ||
1116 | return p; | |
1117 | } | |
1118 | ||
1119 | ||
726a989a RB |
1120 | /* Build a GIMPLE_OMP_ATOMIC_LOAD statement. */ |
1121 | ||
538dd0b7 | 1122 | gomp_atomic_load * |
726a989a RB |
1123 | gimple_build_omp_atomic_load (tree lhs, tree rhs) |
1124 | { | |
538dd0b7 DM |
1125 | gomp_atomic_load *p |
1126 | = as_a <gomp_atomic_load *> (gimple_alloc (GIMPLE_OMP_ATOMIC_LOAD, 0)); | |
726a989a RB |
1127 | gimple_omp_atomic_load_set_lhs (p, lhs); |
1128 | gimple_omp_atomic_load_set_rhs (p, rhs); | |
1129 | return p; | |
1130 | } | |
1131 | ||
1132 | /* Build a GIMPLE_OMP_ATOMIC_STORE statement. | |
1133 | ||
1134 | VAL is the value we are storing. */ | |
1135 | ||
538dd0b7 | 1136 | gomp_atomic_store * |
726a989a RB |
1137 | gimple_build_omp_atomic_store (tree val) |
1138 | { | |
538dd0b7 DM |
1139 | gomp_atomic_store *p |
1140 | = as_a <gomp_atomic_store *> (gimple_alloc (GIMPLE_OMP_ATOMIC_STORE, 0)); | |
726a989a RB |
1141 | gimple_omp_atomic_store_set_val (p, val); |
1142 | return p; | |
1143 | } | |
1144 | ||
0a35513e AH |
1145 | /* Build a GIMPLE_TRANSACTION statement. */ |
1146 | ||
538dd0b7 | 1147 | gtransaction * |
7c11b0fe | 1148 | gimple_build_transaction (gimple_seq body) |
0a35513e | 1149 | { |
538dd0b7 DM |
1150 | gtransaction *p |
1151 | = as_a <gtransaction *> (gimple_alloc (GIMPLE_TRANSACTION, 0)); | |
0a35513e | 1152 | gimple_transaction_set_body (p, body); |
7c11b0fe RH |
1153 | gimple_transaction_set_label_norm (p, 0); |
1154 | gimple_transaction_set_label_uninst (p, 0); | |
1155 | gimple_transaction_set_label_over (p, 0); | |
0a35513e AH |
1156 | return p; |
1157 | } | |
1158 | ||
cea094ed | 1159 | #if defined ENABLE_GIMPLE_CHECKING |
726a989a RB |
1160 | /* Complain of a gimple type mismatch and die. */ |
1161 | ||
1162 | void | |
355fe088 | 1163 | gimple_check_failed (const gimple *gs, const char *file, int line, |
726a989a RB |
1164 | const char *function, enum gimple_code code, |
1165 | enum tree_code subcode) | |
1166 | { | |
1167 | internal_error ("gimple check: expected %s(%s), have %s(%s) in %s, at %s:%d", | |
1168 | gimple_code_name[code], | |
5806f481 | 1169 | get_tree_code_name (subcode), |
726a989a | 1170 | gimple_code_name[gimple_code (gs)], |
daa6e488 DM |
1171 | gs->subcode > 0 |
1172 | ? get_tree_code_name ((enum tree_code) gs->subcode) | |
726a989a RB |
1173 | : "", |
1174 | function, trim_filename (file), line); | |
1175 | } | |
726a989a RB |
1176 | #endif /* ENABLE_GIMPLE_CHECKING */ |
1177 | ||
1178 | ||
726a989a RB |
1179 | /* Link gimple statement GS to the end of the sequence *SEQ_P. If |
1180 | *SEQ_P is NULL, a new sequence is allocated. */ | |
1181 | ||
1182 | void | |
355fe088 | 1183 | gimple_seq_add_stmt (gimple_seq *seq_p, gimple *gs) |
726a989a RB |
1184 | { |
1185 | gimple_stmt_iterator si; | |
726a989a RB |
1186 | if (gs == NULL) |
1187 | return; | |
1188 | ||
726a989a RB |
1189 | si = gsi_last (*seq_p); |
1190 | gsi_insert_after (&si, gs, GSI_NEW_STMT); | |
1191 | } | |
1192 | ||
45b0be94 AM |
1193 | /* Link gimple statement GS to the end of the sequence *SEQ_P. If |
1194 | *SEQ_P is NULL, a new sequence is allocated. This function is | |
1195 | similar to gimple_seq_add_stmt, but does not scan the operands. | |
1196 | During gimplification, we need to manipulate statement sequences | |
1197 | before the def/use vectors have been constructed. */ | |
1198 | ||
1199 | void | |
355fe088 | 1200 | gimple_seq_add_stmt_without_update (gimple_seq *seq_p, gimple *gs) |
45b0be94 AM |
1201 | { |
1202 | gimple_stmt_iterator si; | |
1203 | ||
1204 | if (gs == NULL) | |
1205 | return; | |
1206 | ||
1207 | si = gsi_last (*seq_p); | |
1208 | gsi_insert_after_without_update (&si, gs, GSI_NEW_STMT); | |
1209 | } | |
726a989a RB |
1210 | |
1211 | /* Append sequence SRC to the end of sequence *DST_P. If *DST_P is | |
1212 | NULL, a new sequence is allocated. */ | |
1213 | ||
1214 | void | |
1215 | gimple_seq_add_seq (gimple_seq *dst_p, gimple_seq src) | |
1216 | { | |
1217 | gimple_stmt_iterator si; | |
726a989a RB |
1218 | if (src == NULL) |
1219 | return; | |
1220 | ||
726a989a RB |
1221 | si = gsi_last (*dst_p); |
1222 | gsi_insert_seq_after (&si, src, GSI_NEW_STMT); | |
1223 | } | |
1224 | ||
fef5a0d9 RB |
1225 | /* Append sequence SRC to the end of sequence *DST_P. If *DST_P is |
1226 | NULL, a new sequence is allocated. This function is | |
1227 | similar to gimple_seq_add_seq, but does not scan the operands. */ | |
1228 | ||
1229 | void | |
1230 | gimple_seq_add_seq_without_update (gimple_seq *dst_p, gimple_seq src) | |
1231 | { | |
1232 | gimple_stmt_iterator si; | |
1233 | if (src == NULL) | |
1234 | return; | |
1235 | ||
1236 | si = gsi_last (*dst_p); | |
1237 | gsi_insert_seq_after_without_update (&si, src, GSI_NEW_STMT); | |
1238 | } | |
1239 | ||
45b0be94 AM |
1240 | /* Determine whether to assign a location to the statement GS. */ |
1241 | ||
1242 | static bool | |
355fe088 | 1243 | should_carry_location_p (gimple *gs) |
45b0be94 AM |
1244 | { |
1245 | /* Don't emit a line note for a label. We particularly don't want to | |
1246 | emit one for the break label, since it doesn't actually correspond | |
1247 | to the beginning of the loop/switch. */ | |
1248 | if (gimple_code (gs) == GIMPLE_LABEL) | |
1249 | return false; | |
1250 | ||
1251 | return true; | |
1252 | } | |
1253 | ||
1254 | /* Set the location for gimple statement GS to LOCATION. */ | |
1255 | ||
1256 | static void | |
355fe088 | 1257 | annotate_one_with_location (gimple *gs, location_t location) |
45b0be94 AM |
1258 | { |
1259 | if (!gimple_has_location (gs) | |
1260 | && !gimple_do_not_emit_location_p (gs) | |
1261 | && should_carry_location_p (gs)) | |
1262 | gimple_set_location (gs, location); | |
1263 | } | |
1264 | ||
1265 | /* Set LOCATION for all the statements after iterator GSI in sequence | |
1266 | SEQ. If GSI is pointing to the end of the sequence, start with the | |
1267 | first statement in SEQ. */ | |
1268 | ||
1269 | void | |
1270 | annotate_all_with_location_after (gimple_seq seq, gimple_stmt_iterator gsi, | |
1271 | location_t location) | |
1272 | { | |
1273 | if (gsi_end_p (gsi)) | |
1274 | gsi = gsi_start (seq); | |
1275 | else | |
1276 | gsi_next (&gsi); | |
1277 | ||
1278 | for (; !gsi_end_p (gsi); gsi_next (&gsi)) | |
1279 | annotate_one_with_location (gsi_stmt (gsi), location); | |
1280 | } | |
1281 | ||
1282 | /* Set the location for all the statements in a sequence STMT_P to LOCATION. */ | |
1283 | ||
1284 | void | |
1285 | annotate_all_with_location (gimple_seq stmt_p, location_t location) | |
1286 | { | |
1287 | gimple_stmt_iterator i; | |
1288 | ||
1289 | if (gimple_seq_empty_p (stmt_p)) | |
1290 | return; | |
1291 | ||
1292 | for (i = gsi_start (stmt_p); !gsi_end_p (i); gsi_next (&i)) | |
1293 | { | |
355fe088 | 1294 | gimple *gs = gsi_stmt (i); |
45b0be94 AM |
1295 | annotate_one_with_location (gs, location); |
1296 | } | |
1297 | } | |
726a989a RB |
1298 | |
1299 | /* Helper function of empty_body_p. Return true if STMT is an empty | |
1300 | statement. */ | |
1301 | ||
1302 | static bool | |
355fe088 | 1303 | empty_stmt_p (gimple *stmt) |
726a989a RB |
1304 | { |
1305 | if (gimple_code (stmt) == GIMPLE_NOP) | |
1306 | return true; | |
538dd0b7 DM |
1307 | if (gbind *bind_stmt = dyn_cast <gbind *> (stmt)) |
1308 | return empty_body_p (gimple_bind_body (bind_stmt)); | |
726a989a RB |
1309 | return false; |
1310 | } | |
1311 | ||
1312 | ||
1313 | /* Return true if BODY contains nothing but empty statements. */ | |
1314 | ||
1315 | bool | |
1316 | empty_body_p (gimple_seq body) | |
1317 | { | |
1318 | gimple_stmt_iterator i; | |
1319 | ||
726a989a RB |
1320 | if (gimple_seq_empty_p (body)) |
1321 | return true; | |
1322 | for (i = gsi_start (body); !gsi_end_p (i); gsi_next (&i)) | |
b5b8b0ac AO |
1323 | if (!empty_stmt_p (gsi_stmt (i)) |
1324 | && !is_gimple_debug (gsi_stmt (i))) | |
726a989a RB |
1325 | return false; |
1326 | ||
1327 | return true; | |
1328 | } | |
1329 | ||
1330 | ||
1331 | /* Perform a deep copy of sequence SRC and return the result. */ | |
1332 | ||
1333 | gimple_seq | |
1334 | gimple_seq_copy (gimple_seq src) | |
1335 | { | |
1336 | gimple_stmt_iterator gsi; | |
355a7673 | 1337 | gimple_seq new_seq = NULL; |
355fe088 | 1338 | gimple *stmt; |
726a989a RB |
1339 | |
1340 | for (gsi = gsi_start (src); !gsi_end_p (gsi); gsi_next (&gsi)) | |
1341 | { | |
1342 | stmt = gimple_copy (gsi_stmt (gsi)); | |
82d6e6fc | 1343 | gimple_seq_add_stmt (&new_seq, stmt); |
726a989a RB |
1344 | } |
1345 | ||
82d6e6fc | 1346 | return new_seq; |
726a989a RB |
1347 | } |
1348 | ||
1349 | ||
726a989a | 1350 | |
25583c4f RS |
1351 | /* Return true if calls C1 and C2 are known to go to the same function. */ |
1352 | ||
1353 | bool | |
355fe088 | 1354 | gimple_call_same_target_p (const gimple *c1, const gimple *c2) |
25583c4f RS |
1355 | { |
1356 | if (gimple_call_internal_p (c1)) | |
1357 | return (gimple_call_internal_p (c2) | |
8ab78162 | 1358 | && gimple_call_internal_fn (c1) == gimple_call_internal_fn (c2) |
3433ee35 NS |
1359 | && (!gimple_call_internal_unique_p (as_a <const gcall *> (c1)) |
1360 | || c1 == c2)); | |
25583c4f RS |
1361 | else |
1362 | return (gimple_call_fn (c1) == gimple_call_fn (c2) | |
1363 | || (gimple_call_fndecl (c1) | |
1364 | && gimple_call_fndecl (c1) == gimple_call_fndecl (c2))); | |
1365 | } | |
1366 | ||
726a989a RB |
1367 | /* Detect flags from a GIMPLE_CALL. This is just like |
1368 | call_expr_flags, but for gimple tuples. */ | |
1369 | ||
1370 | int | |
355fe088 | 1371 | gimple_call_flags (const gimple *stmt) |
726a989a RB |
1372 | { |
1373 | int flags; | |
1374 | tree decl = gimple_call_fndecl (stmt); | |
726a989a RB |
1375 | |
1376 | if (decl) | |
1377 | flags = flags_from_decl_or_type (decl); | |
25583c4f RS |
1378 | else if (gimple_call_internal_p (stmt)) |
1379 | flags = internal_fn_flags (gimple_call_internal_fn (stmt)); | |
726a989a | 1380 | else |
97e03fa1 | 1381 | flags = flags_from_decl_or_type (gimple_call_fntype (stmt)); |
726a989a | 1382 | |
daa6e488 | 1383 | if (stmt->subcode & GF_CALL_NOTHROW) |
9bb1a81b JM |
1384 | flags |= ECF_NOTHROW; |
1385 | ||
726a989a RB |
1386 | return flags; |
1387 | } | |
1388 | ||
25583c4f RS |
1389 | /* Return the "fn spec" string for call STMT. */ |
1390 | ||
b78475cf | 1391 | static const_tree |
538dd0b7 | 1392 | gimple_call_fnspec (const gcall *stmt) |
25583c4f RS |
1393 | { |
1394 | tree type, attr; | |
1395 | ||
b78475cf YG |
1396 | if (gimple_call_internal_p (stmt)) |
1397 | return internal_fn_fnspec (gimple_call_internal_fn (stmt)); | |
1398 | ||
25583c4f RS |
1399 | type = gimple_call_fntype (stmt); |
1400 | if (!type) | |
1401 | return NULL_TREE; | |
1402 | ||
1403 | attr = lookup_attribute ("fn spec", TYPE_ATTRIBUTES (type)); | |
1404 | if (!attr) | |
1405 | return NULL_TREE; | |
1406 | ||
1407 | return TREE_VALUE (TREE_VALUE (attr)); | |
1408 | } | |
1409 | ||
0b7b376d RG |
1410 | /* Detects argument flags for argument number ARG on call STMT. */ |
1411 | ||
1412 | int | |
538dd0b7 | 1413 | gimple_call_arg_flags (const gcall *stmt, unsigned arg) |
0b7b376d | 1414 | { |
b78475cf | 1415 | const_tree attr = gimple_call_fnspec (stmt); |
0b7b376d | 1416 | |
25583c4f | 1417 | if (!attr || 1 + arg >= (unsigned) TREE_STRING_LENGTH (attr)) |
0b7b376d RG |
1418 | return 0; |
1419 | ||
1420 | switch (TREE_STRING_POINTER (attr)[1 + arg]) | |
1421 | { | |
1422 | case 'x': | |
1423 | case 'X': | |
1424 | return EAF_UNUSED; | |
1425 | ||
1426 | case 'R': | |
1427 | return EAF_DIRECT | EAF_NOCLOBBER | EAF_NOESCAPE; | |
1428 | ||
1429 | case 'r': | |
1430 | return EAF_NOCLOBBER | EAF_NOESCAPE; | |
1431 | ||
1432 | case 'W': | |
1433 | return EAF_DIRECT | EAF_NOESCAPE; | |
1434 | ||
1435 | case 'w': | |
1436 | return EAF_NOESCAPE; | |
1437 | ||
1438 | case '.': | |
1439 | default: | |
1440 | return 0; | |
1441 | } | |
1442 | } | |
1443 | ||
1444 | /* Detects return flags for the call STMT. */ | |
1445 | ||
1446 | int | |
538dd0b7 | 1447 | gimple_call_return_flags (const gcall *stmt) |
0b7b376d | 1448 | { |
b78475cf | 1449 | const_tree attr; |
0b7b376d RG |
1450 | |
1451 | if (gimple_call_flags (stmt) & ECF_MALLOC) | |
1452 | return ERF_NOALIAS; | |
1453 | ||
25583c4f RS |
1454 | attr = gimple_call_fnspec (stmt); |
1455 | if (!attr || TREE_STRING_LENGTH (attr) < 1) | |
0b7b376d RG |
1456 | return 0; |
1457 | ||
1458 | switch (TREE_STRING_POINTER (attr)[0]) | |
1459 | { | |
1460 | case '1': | |
1461 | case '2': | |
1462 | case '3': | |
1463 | case '4': | |
1464 | return ERF_RETURNS_ARG | (TREE_STRING_POINTER (attr)[0] - '1'); | |
1465 | ||
1466 | case 'm': | |
1467 | return ERF_NOALIAS; | |
1468 | ||
1469 | case '.': | |
1470 | default: | |
1471 | return 0; | |
1472 | } | |
1473 | } | |
726a989a | 1474 | |
3dbe9454 | 1475 | |
726a989a RB |
1476 | /* Return true if GS is a copy assignment. */ |
1477 | ||
1478 | bool | |
355fe088 | 1479 | gimple_assign_copy_p (gimple *gs) |
726a989a | 1480 | { |
3dbe9454 RG |
1481 | return (gimple_assign_single_p (gs) |
1482 | && is_gimple_val (gimple_op (gs, 1))); | |
726a989a RB |
1483 | } |
1484 | ||
1485 | ||
1486 | /* Return true if GS is a SSA_NAME copy assignment. */ | |
1487 | ||
1488 | bool | |
355fe088 | 1489 | gimple_assign_ssa_name_copy_p (gimple *gs) |
726a989a | 1490 | { |
3dbe9454 | 1491 | return (gimple_assign_single_p (gs) |
726a989a RB |
1492 | && TREE_CODE (gimple_assign_lhs (gs)) == SSA_NAME |
1493 | && TREE_CODE (gimple_assign_rhs1 (gs)) == SSA_NAME); | |
1494 | } | |
1495 | ||
1496 | ||
726a989a RB |
1497 | /* Return true if GS is an assignment with a unary RHS, but the |
1498 | operator has no effect on the assigned value. The logic is adapted | |
1499 | from STRIP_NOPS. This predicate is intended to be used in tuplifying | |
1500 | instances in which STRIP_NOPS was previously applied to the RHS of | |
1501 | an assignment. | |
1502 | ||
1503 | NOTE: In the use cases that led to the creation of this function | |
1504 | and of gimple_assign_single_p, it is typical to test for either | |
1505 | condition and to proceed in the same manner. In each case, the | |
1506 | assigned value is represented by the single RHS operand of the | |
1507 | assignment. I suspect there may be cases where gimple_assign_copy_p, | |
1508 | gimple_assign_single_p, or equivalent logic is used where a similar | |
1509 | treatment of unary NOPs is appropriate. */ | |
b8698a0f | 1510 | |
726a989a | 1511 | bool |
355fe088 | 1512 | gimple_assign_unary_nop_p (gimple *gs) |
726a989a | 1513 | { |
3dbe9454 | 1514 | return (is_gimple_assign (gs) |
1a87cf0c | 1515 | && (CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (gs)) |
726a989a RB |
1516 | || gimple_assign_rhs_code (gs) == NON_LVALUE_EXPR) |
1517 | && gimple_assign_rhs1 (gs) != error_mark_node | |
1518 | && (TYPE_MODE (TREE_TYPE (gimple_assign_lhs (gs))) | |
1519 | == TYPE_MODE (TREE_TYPE (gimple_assign_rhs1 (gs))))); | |
1520 | } | |
1521 | ||
1522 | /* Set BB to be the basic block holding G. */ | |
1523 | ||
1524 | void | |
355fe088 | 1525 | gimple_set_bb (gimple *stmt, basic_block bb) |
726a989a | 1526 | { |
daa6e488 | 1527 | stmt->bb = bb; |
726a989a | 1528 | |
45b62594 RB |
1529 | if (gimple_code (stmt) != GIMPLE_LABEL) |
1530 | return; | |
1531 | ||
726a989a RB |
1532 | /* If the statement is a label, add the label to block-to-labels map |
1533 | so that we can speed up edge creation for GIMPLE_GOTOs. */ | |
45b62594 | 1534 | if (cfun->cfg) |
726a989a RB |
1535 | { |
1536 | tree t; | |
1537 | int uid; | |
1538 | ||
538dd0b7 | 1539 | t = gimple_label_label (as_a <glabel *> (stmt)); |
726a989a RB |
1540 | uid = LABEL_DECL_UID (t); |
1541 | if (uid == -1) | |
1542 | { | |
99729d91 DM |
1543 | unsigned old_len = |
1544 | vec_safe_length (label_to_block_map_for_fn (cfun)); | |
726a989a RB |
1545 | LABEL_DECL_UID (t) = uid = cfun->cfg->last_label_uid++; |
1546 | if (old_len <= (unsigned) uid) | |
1547 | { | |
5006671f | 1548 | unsigned new_len = 3 * uid / 2 + 1; |
726a989a | 1549 | |
99729d91 DM |
1550 | vec_safe_grow_cleared (label_to_block_map_for_fn (cfun), |
1551 | new_len); | |
726a989a RB |
1552 | } |
1553 | } | |
1554 | ||
99729d91 | 1555 | (*label_to_block_map_for_fn (cfun))[uid] = bb; |
726a989a RB |
1556 | } |
1557 | } | |
1558 | ||
1559 | ||
726a989a RB |
1560 | /* Modify the RHS of the assignment pointed-to by GSI using the |
1561 | operands in the expression tree EXPR. | |
1562 | ||
1563 | NOTE: The statement pointed-to by GSI may be reallocated if it | |
1564 | did not have enough operand slots. | |
1565 | ||
1566 | This function is useful to convert an existing tree expression into | |
1567 | the flat representation used for the RHS of a GIMPLE assignment. | |
1568 | It will reallocate memory as needed to expand or shrink the number | |
1569 | of operand slots needed to represent EXPR. | |
1570 | ||
1571 | NOTE: If you find yourself building a tree and then calling this | |
1572 | function, you are most certainly doing it the slow way. It is much | |
1573 | better to build a new assignment or to use the function | |
1574 | gimple_assign_set_rhs_with_ops, which does not require an | |
1575 | expression tree to be built. */ | |
1576 | ||
1577 | void | |
1578 | gimple_assign_set_rhs_from_tree (gimple_stmt_iterator *gsi, tree expr) | |
1579 | { | |
1580 | enum tree_code subcode; | |
0354c0c7 | 1581 | tree op1, op2, op3; |
726a989a | 1582 | |
d1e2bb2d | 1583 | extract_ops_from_tree (expr, &subcode, &op1, &op2, &op3); |
00d66391 | 1584 | gimple_assign_set_rhs_with_ops (gsi, subcode, op1, op2, op3); |
726a989a RB |
1585 | } |
1586 | ||
1587 | ||
1588 | /* Set the RHS of assignment statement pointed-to by GSI to CODE with | |
0354c0c7 | 1589 | operands OP1, OP2 and OP3. |
726a989a RB |
1590 | |
1591 | NOTE: The statement pointed-to by GSI may be reallocated if it | |
1592 | did not have enough operand slots. */ | |
1593 | ||
1594 | void | |
00d66391 JJ |
1595 | gimple_assign_set_rhs_with_ops (gimple_stmt_iterator *gsi, enum tree_code code, |
1596 | tree op1, tree op2, tree op3) | |
726a989a RB |
1597 | { |
1598 | unsigned new_rhs_ops = get_gimple_rhs_num_ops (code); | |
355fe088 | 1599 | gimple *stmt = gsi_stmt (*gsi); |
726a989a RB |
1600 | |
1601 | /* If the new CODE needs more operands, allocate a new statement. */ | |
1602 | if (gimple_num_ops (stmt) < new_rhs_ops + 1) | |
1603 | { | |
1604 | tree lhs = gimple_assign_lhs (stmt); | |
355fe088 | 1605 | gimple *new_stmt = gimple_alloc (gimple_code (stmt), new_rhs_ops + 1); |
726a989a | 1606 | memcpy (new_stmt, stmt, gimple_size (gimple_code (stmt))); |
355a7673 | 1607 | gimple_init_singleton (new_stmt); |
726a989a RB |
1608 | gsi_replace (gsi, new_stmt, true); |
1609 | stmt = new_stmt; | |
1610 | ||
1611 | /* The LHS needs to be reset as this also changes the SSA name | |
1612 | on the LHS. */ | |
1613 | gimple_assign_set_lhs (stmt, lhs); | |
1614 | } | |
1615 | ||
1616 | gimple_set_num_ops (stmt, new_rhs_ops + 1); | |
1617 | gimple_set_subcode (stmt, code); | |
1618 | gimple_assign_set_rhs1 (stmt, op1); | |
1619 | if (new_rhs_ops > 1) | |
1620 | gimple_assign_set_rhs2 (stmt, op2); | |
0354c0c7 BS |
1621 | if (new_rhs_ops > 2) |
1622 | gimple_assign_set_rhs3 (stmt, op3); | |
726a989a RB |
1623 | } |
1624 | ||
1625 | ||
1626 | /* Return the LHS of a statement that performs an assignment, | |
1627 | either a GIMPLE_ASSIGN or a GIMPLE_CALL. Returns NULL_TREE | |
1628 | for a call to a function that returns no value, or for a | |
1629 | statement other than an assignment or a call. */ | |
1630 | ||
1631 | tree | |
355fe088 | 1632 | gimple_get_lhs (const gimple *stmt) |
726a989a | 1633 | { |
e0c68ce9 | 1634 | enum gimple_code code = gimple_code (stmt); |
726a989a RB |
1635 | |
1636 | if (code == GIMPLE_ASSIGN) | |
1637 | return gimple_assign_lhs (stmt); | |
1638 | else if (code == GIMPLE_CALL) | |
1639 | return gimple_call_lhs (stmt); | |
1640 | else | |
1641 | return NULL_TREE; | |
1642 | } | |
1643 | ||
1644 | ||
1645 | /* Set the LHS of a statement that performs an assignment, | |
1646 | either a GIMPLE_ASSIGN or a GIMPLE_CALL. */ | |
1647 | ||
1648 | void | |
355fe088 | 1649 | gimple_set_lhs (gimple *stmt, tree lhs) |
726a989a | 1650 | { |
e0c68ce9 | 1651 | enum gimple_code code = gimple_code (stmt); |
726a989a RB |
1652 | |
1653 | if (code == GIMPLE_ASSIGN) | |
1654 | gimple_assign_set_lhs (stmt, lhs); | |
1655 | else if (code == GIMPLE_CALL) | |
1656 | gimple_call_set_lhs (stmt, lhs); | |
1657 | else | |
c3284718 | 1658 | gcc_unreachable (); |
726a989a RB |
1659 | } |
1660 | ||
1661 | ||
1662 | /* Return a deep copy of statement STMT. All the operands from STMT | |
1663 | are reallocated and copied using unshare_expr. The DEF, USE, VDEF | |
355a7673 MM |
1664 | and VUSE operand arrays are set to empty in the new copy. The new |
1665 | copy isn't part of any sequence. */ | |
726a989a | 1666 | |
355fe088 TS |
1667 | gimple * |
1668 | gimple_copy (gimple *stmt) | |
726a989a RB |
1669 | { |
1670 | enum gimple_code code = gimple_code (stmt); | |
1671 | unsigned num_ops = gimple_num_ops (stmt); | |
355fe088 | 1672 | gimple *copy = gimple_alloc (code, num_ops); |
726a989a RB |
1673 | unsigned i; |
1674 | ||
1675 | /* Shallow copy all the fields from STMT. */ | |
1676 | memcpy (copy, stmt, gimple_size (code)); | |
355a7673 | 1677 | gimple_init_singleton (copy); |
726a989a RB |
1678 | |
1679 | /* If STMT has sub-statements, deep-copy them as well. */ | |
1680 | if (gimple_has_substatements (stmt)) | |
1681 | { | |
1682 | gimple_seq new_seq; | |
1683 | tree t; | |
1684 | ||
1685 | switch (gimple_code (stmt)) | |
1686 | { | |
1687 | case GIMPLE_BIND: | |
538dd0b7 DM |
1688 | { |
1689 | gbind *bind_stmt = as_a <gbind *> (stmt); | |
1690 | gbind *bind_copy = as_a <gbind *> (copy); | |
1691 | new_seq = gimple_seq_copy (gimple_bind_body (bind_stmt)); | |
1692 | gimple_bind_set_body (bind_copy, new_seq); | |
1693 | gimple_bind_set_vars (bind_copy, | |
1694 | unshare_expr (gimple_bind_vars (bind_stmt))); | |
1695 | gimple_bind_set_block (bind_copy, gimple_bind_block (bind_stmt)); | |
1696 | } | |
726a989a RB |
1697 | break; |
1698 | ||
1699 | case GIMPLE_CATCH: | |
538dd0b7 DM |
1700 | { |
1701 | gcatch *catch_stmt = as_a <gcatch *> (stmt); | |
1702 | gcatch *catch_copy = as_a <gcatch *> (copy); | |
1703 | new_seq = gimple_seq_copy (gimple_catch_handler (catch_stmt)); | |
1704 | gimple_catch_set_handler (catch_copy, new_seq); | |
1705 | t = unshare_expr (gimple_catch_types (catch_stmt)); | |
1706 | gimple_catch_set_types (catch_copy, t); | |
1707 | } | |
726a989a RB |
1708 | break; |
1709 | ||
1710 | case GIMPLE_EH_FILTER: | |
538dd0b7 DM |
1711 | { |
1712 | geh_filter *eh_filter_stmt = as_a <geh_filter *> (stmt); | |
1713 | geh_filter *eh_filter_copy = as_a <geh_filter *> (copy); | |
1714 | new_seq | |
1715 | = gimple_seq_copy (gimple_eh_filter_failure (eh_filter_stmt)); | |
1716 | gimple_eh_filter_set_failure (eh_filter_copy, new_seq); | |
1717 | t = unshare_expr (gimple_eh_filter_types (eh_filter_stmt)); | |
1718 | gimple_eh_filter_set_types (eh_filter_copy, t); | |
1719 | } | |
726a989a RB |
1720 | break; |
1721 | ||
0a35513e | 1722 | case GIMPLE_EH_ELSE: |
538dd0b7 DM |
1723 | { |
1724 | geh_else *eh_else_stmt = as_a <geh_else *> (stmt); | |
1725 | geh_else *eh_else_copy = as_a <geh_else *> (copy); | |
1726 | new_seq = gimple_seq_copy (gimple_eh_else_n_body (eh_else_stmt)); | |
1727 | gimple_eh_else_set_n_body (eh_else_copy, new_seq); | |
1728 | new_seq = gimple_seq_copy (gimple_eh_else_e_body (eh_else_stmt)); | |
1729 | gimple_eh_else_set_e_body (eh_else_copy, new_seq); | |
1730 | } | |
0a35513e AH |
1731 | break; |
1732 | ||
726a989a | 1733 | case GIMPLE_TRY: |
538dd0b7 DM |
1734 | { |
1735 | gtry *try_stmt = as_a <gtry *> (stmt); | |
1736 | gtry *try_copy = as_a <gtry *> (copy); | |
1737 | new_seq = gimple_seq_copy (gimple_try_eval (try_stmt)); | |
1738 | gimple_try_set_eval (try_copy, new_seq); | |
1739 | new_seq = gimple_seq_copy (gimple_try_cleanup (try_stmt)); | |
1740 | gimple_try_set_cleanup (try_copy, new_seq); | |
1741 | } | |
726a989a RB |
1742 | break; |
1743 | ||
1744 | case GIMPLE_OMP_FOR: | |
1745 | new_seq = gimple_seq_copy (gimple_omp_for_pre_body (stmt)); | |
1746 | gimple_omp_for_set_pre_body (copy, new_seq); | |
1747 | t = unshare_expr (gimple_omp_for_clauses (stmt)); | |
1748 | gimple_omp_for_set_clauses (copy, t); | |
daa6e488 | 1749 | { |
538dd0b7 | 1750 | gomp_for *omp_for_copy = as_a <gomp_for *> (copy); |
766090c2 TS |
1751 | omp_for_copy->iter = ggc_vec_alloc<gimple_omp_for_iter> |
1752 | ( gimple_omp_for_collapse (stmt)); | |
daa6e488 | 1753 | } |
726a989a RB |
1754 | for (i = 0; i < gimple_omp_for_collapse (stmt); i++) |
1755 | { | |
1756 | gimple_omp_for_set_cond (copy, i, | |
1757 | gimple_omp_for_cond (stmt, i)); | |
1758 | gimple_omp_for_set_index (copy, i, | |
1759 | gimple_omp_for_index (stmt, i)); | |
1760 | t = unshare_expr (gimple_omp_for_initial (stmt, i)); | |
1761 | gimple_omp_for_set_initial (copy, i, t); | |
1762 | t = unshare_expr (gimple_omp_for_final (stmt, i)); | |
1763 | gimple_omp_for_set_final (copy, i, t); | |
1764 | t = unshare_expr (gimple_omp_for_incr (stmt, i)); | |
1765 | gimple_omp_for_set_incr (copy, i, t); | |
1766 | } | |
1767 | goto copy_omp_body; | |
1768 | ||
1769 | case GIMPLE_OMP_PARALLEL: | |
538dd0b7 DM |
1770 | { |
1771 | gomp_parallel *omp_par_stmt = as_a <gomp_parallel *> (stmt); | |
1772 | gomp_parallel *omp_par_copy = as_a <gomp_parallel *> (copy); | |
1773 | t = unshare_expr (gimple_omp_parallel_clauses (omp_par_stmt)); | |
1774 | gimple_omp_parallel_set_clauses (omp_par_copy, t); | |
1775 | t = unshare_expr (gimple_omp_parallel_child_fn (omp_par_stmt)); | |
1776 | gimple_omp_parallel_set_child_fn (omp_par_copy, t); | |
1777 | t = unshare_expr (gimple_omp_parallel_data_arg (omp_par_stmt)); | |
1778 | gimple_omp_parallel_set_data_arg (omp_par_copy, t); | |
1779 | } | |
726a989a RB |
1780 | goto copy_omp_body; |
1781 | ||
1782 | case GIMPLE_OMP_TASK: | |
1783 | t = unshare_expr (gimple_omp_task_clauses (stmt)); | |
1784 | gimple_omp_task_set_clauses (copy, t); | |
1785 | t = unshare_expr (gimple_omp_task_child_fn (stmt)); | |
1786 | gimple_omp_task_set_child_fn (copy, t); | |
1787 | t = unshare_expr (gimple_omp_task_data_arg (stmt)); | |
1788 | gimple_omp_task_set_data_arg (copy, t); | |
1789 | t = unshare_expr (gimple_omp_task_copy_fn (stmt)); | |
1790 | gimple_omp_task_set_copy_fn (copy, t); | |
1791 | t = unshare_expr (gimple_omp_task_arg_size (stmt)); | |
1792 | gimple_omp_task_set_arg_size (copy, t); | |
1793 | t = unshare_expr (gimple_omp_task_arg_align (stmt)); | |
1794 | gimple_omp_task_set_arg_align (copy, t); | |
1795 | goto copy_omp_body; | |
1796 | ||
1797 | case GIMPLE_OMP_CRITICAL: | |
d9a6bd32 JJ |
1798 | t = unshare_expr (gimple_omp_critical_name |
1799 | (as_a <gomp_critical *> (stmt))); | |
538dd0b7 | 1800 | gimple_omp_critical_set_name (as_a <gomp_critical *> (copy), t); |
d9a6bd32 JJ |
1801 | t = unshare_expr (gimple_omp_critical_clauses |
1802 | (as_a <gomp_critical *> (stmt))); | |
1803 | gimple_omp_critical_set_clauses (as_a <gomp_critical *> (copy), t); | |
1804 | goto copy_omp_body; | |
1805 | ||
1806 | case GIMPLE_OMP_ORDERED: | |
1807 | t = unshare_expr (gimple_omp_ordered_clauses | |
1808 | (as_a <gomp_ordered *> (stmt))); | |
1809 | gimple_omp_ordered_set_clauses (as_a <gomp_ordered *> (copy), t); | |
726a989a RB |
1810 | goto copy_omp_body; |
1811 | ||
1812 | case GIMPLE_OMP_SECTIONS: | |
1813 | t = unshare_expr (gimple_omp_sections_clauses (stmt)); | |
1814 | gimple_omp_sections_set_clauses (copy, t); | |
1815 | t = unshare_expr (gimple_omp_sections_control (stmt)); | |
1816 | gimple_omp_sections_set_control (copy, t); | |
1817 | /* FALLTHRU */ | |
1818 | ||
1819 | case GIMPLE_OMP_SINGLE: | |
acf0174b JJ |
1820 | case GIMPLE_OMP_TARGET: |
1821 | case GIMPLE_OMP_TEAMS: | |
726a989a RB |
1822 | case GIMPLE_OMP_SECTION: |
1823 | case GIMPLE_OMP_MASTER: | |
acf0174b | 1824 | case GIMPLE_OMP_TASKGROUP: |
b2b40051 | 1825 | case GIMPLE_OMP_GRID_BODY: |
726a989a RB |
1826 | copy_omp_body: |
1827 | new_seq = gimple_seq_copy (gimple_omp_body (stmt)); | |
1828 | gimple_omp_set_body (copy, new_seq); | |
1829 | break; | |
1830 | ||
0a35513e | 1831 | case GIMPLE_TRANSACTION: |
538dd0b7 DM |
1832 | new_seq = gimple_seq_copy (gimple_transaction_body ( |
1833 | as_a <gtransaction *> (stmt))); | |
1834 | gimple_transaction_set_body (as_a <gtransaction *> (copy), | |
1835 | new_seq); | |
0a35513e AH |
1836 | break; |
1837 | ||
726a989a RB |
1838 | case GIMPLE_WITH_CLEANUP_EXPR: |
1839 | new_seq = gimple_seq_copy (gimple_wce_cleanup (stmt)); | |
1840 | gimple_wce_set_cleanup (copy, new_seq); | |
1841 | break; | |
1842 | ||
1843 | default: | |
1844 | gcc_unreachable (); | |
1845 | } | |
1846 | } | |
1847 | ||
1848 | /* Make copy of operands. */ | |
483ef49f RG |
1849 | for (i = 0; i < num_ops; i++) |
1850 | gimple_set_op (copy, i, unshare_expr (gimple_op (stmt, i))); | |
726a989a | 1851 | |
483ef49f RG |
1852 | if (gimple_has_mem_ops (stmt)) |
1853 | { | |
1854 | gimple_set_vdef (copy, gimple_vdef (stmt)); | |
1855 | gimple_set_vuse (copy, gimple_vuse (stmt)); | |
1856 | } | |
726a989a | 1857 | |
483ef49f RG |
1858 | /* Clear out SSA operand vectors on COPY. */ |
1859 | if (gimple_has_ops (stmt)) | |
1860 | { | |
483ef49f | 1861 | gimple_set_use_ops (copy, NULL); |
726a989a | 1862 | |
5006671f RG |
1863 | /* SSA operands need to be updated. */ |
1864 | gimple_set_modified (copy, true); | |
726a989a RB |
1865 | } |
1866 | ||
1867 | return copy; | |
1868 | } | |
1869 | ||
1870 | ||
726a989a RB |
1871 | /* Return true if statement S has side-effects. We consider a |
1872 | statement to have side effects if: | |
1873 | ||
1874 | - It is a GIMPLE_CALL not marked with ECF_PURE or ECF_CONST. | |
1875 | - Any of its operands are marked TREE_THIS_VOLATILE or TREE_SIDE_EFFECTS. */ | |
1876 | ||
1877 | bool | |
355fe088 | 1878 | gimple_has_side_effects (const gimple *s) |
726a989a | 1879 | { |
b5b8b0ac AO |
1880 | if (is_gimple_debug (s)) |
1881 | return false; | |
1882 | ||
726a989a RB |
1883 | /* We don't have to scan the arguments to check for |
1884 | volatile arguments, though, at present, we still | |
1885 | do a scan to check for TREE_SIDE_EFFECTS. */ | |
1886 | if (gimple_has_volatile_ops (s)) | |
1887 | return true; | |
1888 | ||
179184e3 | 1889 | if (gimple_code (s) == GIMPLE_ASM |
538dd0b7 | 1890 | && gimple_asm_volatile_p (as_a <const gasm *> (s))) |
179184e3 RG |
1891 | return true; |
1892 | ||
726a989a RB |
1893 | if (is_gimple_call (s)) |
1894 | { | |
723afc44 | 1895 | int flags = gimple_call_flags (s); |
726a989a | 1896 | |
723afc44 RG |
1897 | /* An infinite loop is considered a side effect. */ |
1898 | if (!(flags & (ECF_CONST | ECF_PURE)) | |
1899 | || (flags & ECF_LOOPING_CONST_OR_PURE)) | |
726a989a RB |
1900 | return true; |
1901 | ||
726a989a RB |
1902 | return false; |
1903 | } | |
726a989a RB |
1904 | |
1905 | return false; | |
1906 | } | |
1907 | ||
726a989a | 1908 | /* Helper for gimple_could_trap_p and gimple_assign_rhs_could_trap_p. |
e1fd038a SP |
1909 | Return true if S can trap. When INCLUDE_MEM is true, check whether |
1910 | the memory operations could trap. When INCLUDE_STORES is true and | |
1911 | S is a GIMPLE_ASSIGN, the LHS of the assignment is also checked. */ | |
726a989a | 1912 | |
e1fd038a | 1913 | bool |
355fe088 | 1914 | gimple_could_trap_p_1 (gimple *s, bool include_mem, bool include_stores) |
726a989a | 1915 | { |
726a989a RB |
1916 | tree t, div = NULL_TREE; |
1917 | enum tree_code op; | |
1918 | ||
e1fd038a SP |
1919 | if (include_mem) |
1920 | { | |
1921 | unsigned i, start = (is_gimple_assign (s) && !include_stores) ? 1 : 0; | |
726a989a | 1922 | |
e1fd038a SP |
1923 | for (i = start; i < gimple_num_ops (s); i++) |
1924 | if (tree_could_trap_p (gimple_op (s, i))) | |
1925 | return true; | |
1926 | } | |
726a989a RB |
1927 | |
1928 | switch (gimple_code (s)) | |
1929 | { | |
1930 | case GIMPLE_ASM: | |
538dd0b7 | 1931 | return gimple_asm_volatile_p (as_a <gasm *> (s)); |
726a989a RB |
1932 | |
1933 | case GIMPLE_CALL: | |
1934 | t = gimple_call_fndecl (s); | |
1935 | /* Assume that calls to weak functions may trap. */ | |
1936 | if (!t || !DECL_P (t) || DECL_WEAK (t)) | |
1937 | return true; | |
1938 | return false; | |
1939 | ||
1940 | case GIMPLE_ASSIGN: | |
1941 | t = gimple_expr_type (s); | |
1942 | op = gimple_assign_rhs_code (s); | |
1943 | if (get_gimple_rhs_class (op) == GIMPLE_BINARY_RHS) | |
1944 | div = gimple_assign_rhs2 (s); | |
1945 | return (operation_could_trap_p (op, FLOAT_TYPE_P (t), | |
1946 | (INTEGRAL_TYPE_P (t) | |
1947 | && TYPE_OVERFLOW_TRAPS (t)), | |
1948 | div)); | |
1949 | ||
46ec7a06 RB |
1950 | case GIMPLE_COND: |
1951 | t = TREE_TYPE (gimple_cond_lhs (s)); | |
1952 | return operation_could_trap_p (gimple_cond_code (s), | |
1953 | FLOAT_TYPE_P (t), false, NULL_TREE); | |
1954 | ||
726a989a RB |
1955 | default: |
1956 | break; | |
1957 | } | |
1958 | ||
1959 | return false; | |
726a989a RB |
1960 | } |
1961 | ||
726a989a RB |
1962 | /* Return true if statement S can trap. */ |
1963 | ||
1964 | bool | |
355fe088 | 1965 | gimple_could_trap_p (gimple *s) |
726a989a | 1966 | { |
e1fd038a | 1967 | return gimple_could_trap_p_1 (s, true, true); |
726a989a RB |
1968 | } |
1969 | ||
726a989a RB |
1970 | /* Return true if RHS of a GIMPLE_ASSIGN S can trap. */ |
1971 | ||
1972 | bool | |
355fe088 | 1973 | gimple_assign_rhs_could_trap_p (gimple *s) |
726a989a RB |
1974 | { |
1975 | gcc_assert (is_gimple_assign (s)); | |
e1fd038a | 1976 | return gimple_could_trap_p_1 (s, true, false); |
726a989a RB |
1977 | } |
1978 | ||
1979 | ||
1980 | /* Print debugging information for gimple stmts generated. */ | |
1981 | ||
1982 | void | |
1983 | dump_gimple_statistics (void) | |
1984 | { | |
726a989a RB |
1985 | int i, total_tuples = 0, total_bytes = 0; |
1986 | ||
7aa6d18a SB |
1987 | if (! GATHER_STATISTICS) |
1988 | { | |
1989 | fprintf (stderr, "No gimple statistics\n"); | |
1990 | return; | |
1991 | } | |
1992 | ||
726a989a RB |
1993 | fprintf (stderr, "\nGIMPLE statements\n"); |
1994 | fprintf (stderr, "Kind Stmts Bytes\n"); | |
1995 | fprintf (stderr, "---------------------------------------\n"); | |
1996 | for (i = 0; i < (int) gimple_alloc_kind_all; ++i) | |
1997 | { | |
1998 | fprintf (stderr, "%-20s %7d %10d\n", gimple_alloc_kind_names[i], | |
1999 | gimple_alloc_counts[i], gimple_alloc_sizes[i]); | |
2000 | total_tuples += gimple_alloc_counts[i]; | |
2001 | total_bytes += gimple_alloc_sizes[i]; | |
2002 | } | |
2003 | fprintf (stderr, "---------------------------------------\n"); | |
2004 | fprintf (stderr, "%-20s %7d %10d\n", "Total", total_tuples, total_bytes); | |
2005 | fprintf (stderr, "---------------------------------------\n"); | |
726a989a RB |
2006 | } |
2007 | ||
2008 | ||
726a989a RB |
2009 | /* Return the number of operands needed on the RHS of a GIMPLE |
2010 | assignment for an expression with tree code CODE. */ | |
2011 | ||
2012 | unsigned | |
2013 | get_gimple_rhs_num_ops (enum tree_code code) | |
2014 | { | |
2015 | enum gimple_rhs_class rhs_class = get_gimple_rhs_class (code); | |
2016 | ||
2017 | if (rhs_class == GIMPLE_UNARY_RHS || rhs_class == GIMPLE_SINGLE_RHS) | |
2018 | return 1; | |
2019 | else if (rhs_class == GIMPLE_BINARY_RHS) | |
2020 | return 2; | |
0354c0c7 BS |
2021 | else if (rhs_class == GIMPLE_TERNARY_RHS) |
2022 | return 3; | |
726a989a RB |
2023 | else |
2024 | gcc_unreachable (); | |
2025 | } | |
2026 | ||
2027 | #define DEFTREECODE(SYM, STRING, TYPE, NARGS) \ | |
2028 | (unsigned char) \ | |
2029 | ((TYPE) == tcc_unary ? GIMPLE_UNARY_RHS \ | |
2030 | : ((TYPE) == tcc_binary \ | |
2031 | || (TYPE) == tcc_comparison) ? GIMPLE_BINARY_RHS \ | |
2032 | : ((TYPE) == tcc_constant \ | |
2033 | || (TYPE) == tcc_declaration \ | |
2034 | || (TYPE) == tcc_reference) ? GIMPLE_SINGLE_RHS \ | |
2035 | : ((SYM) == TRUTH_AND_EXPR \ | |
2036 | || (SYM) == TRUTH_OR_EXPR \ | |
2037 | || (SYM) == TRUTH_XOR_EXPR) ? GIMPLE_BINARY_RHS \ | |
2038 | : (SYM) == TRUTH_NOT_EXPR ? GIMPLE_UNARY_RHS \ | |
4e71066d RG |
2039 | : ((SYM) == COND_EXPR \ |
2040 | || (SYM) == WIDEN_MULT_PLUS_EXPR \ | |
16949072 | 2041 | || (SYM) == WIDEN_MULT_MINUS_EXPR \ |
f471fe72 | 2042 | || (SYM) == DOT_PROD_EXPR \ |
79d652a5 | 2043 | || (SYM) == SAD_EXPR \ |
f471fe72 | 2044 | || (SYM) == REALIGN_LOAD_EXPR \ |
4e71066d | 2045 | || (SYM) == VEC_COND_EXPR \ |
2205ed25 | 2046 | || (SYM) == VEC_PERM_EXPR \ |
483c6429 | 2047 | || (SYM) == BIT_INSERT_EXPR \ |
16949072 | 2048 | || (SYM) == FMA_EXPR) ? GIMPLE_TERNARY_RHS \ |
4e71066d | 2049 | : ((SYM) == CONSTRUCTOR \ |
726a989a RB |
2050 | || (SYM) == OBJ_TYPE_REF \ |
2051 | || (SYM) == ASSERT_EXPR \ | |
2052 | || (SYM) == ADDR_EXPR \ | |
2053 | || (SYM) == WITH_SIZE_EXPR \ | |
4e71066d | 2054 | || (SYM) == SSA_NAME) ? GIMPLE_SINGLE_RHS \ |
726a989a RB |
2055 | : GIMPLE_INVALID_RHS), |
2056 | #define END_OF_BASE_TREE_CODES (unsigned char) GIMPLE_INVALID_RHS, | |
2057 | ||
2058 | const unsigned char gimple_rhs_class_table[] = { | |
2059 | #include "all-tree.def" | |
2060 | }; | |
2061 | ||
2062 | #undef DEFTREECODE | |
2063 | #undef END_OF_BASE_TREE_CODES | |
2064 | ||
726a989a RB |
2065 | /* Canonicalize a tree T for use in a COND_EXPR as conditional. Returns |
2066 | a canonicalized tree that is valid for a COND_EXPR or NULL_TREE, if | |
2067 | we failed to create one. */ | |
2068 | ||
2069 | tree | |
2070 | canonicalize_cond_expr_cond (tree t) | |
2071 | { | |
b66a1bac RG |
2072 | /* Strip conversions around boolean operations. */ |
2073 | if (CONVERT_EXPR_P (t) | |
9b80d091 KT |
2074 | && (truth_value_p (TREE_CODE (TREE_OPERAND (t, 0))) |
2075 | || TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) | |
2076 | == BOOLEAN_TYPE)) | |
b66a1bac RG |
2077 | t = TREE_OPERAND (t, 0); |
2078 | ||
726a989a | 2079 | /* For !x use x == 0. */ |
12430896 | 2080 | if (TREE_CODE (t) == TRUTH_NOT_EXPR) |
726a989a RB |
2081 | { |
2082 | tree top0 = TREE_OPERAND (t, 0); | |
2083 | t = build2 (EQ_EXPR, TREE_TYPE (t), | |
2084 | top0, build_int_cst (TREE_TYPE (top0), 0)); | |
2085 | } | |
2086 | /* For cmp ? 1 : 0 use cmp. */ | |
2087 | else if (TREE_CODE (t) == COND_EXPR | |
2088 | && COMPARISON_CLASS_P (TREE_OPERAND (t, 0)) | |
2089 | && integer_onep (TREE_OPERAND (t, 1)) | |
2090 | && integer_zerop (TREE_OPERAND (t, 2))) | |
2091 | { | |
2092 | tree top0 = TREE_OPERAND (t, 0); | |
2093 | t = build2 (TREE_CODE (top0), TREE_TYPE (t), | |
2094 | TREE_OPERAND (top0, 0), TREE_OPERAND (top0, 1)); | |
2095 | } | |
4481581f JL |
2096 | /* For x ^ y use x != y. */ |
2097 | else if (TREE_CODE (t) == BIT_XOR_EXPR) | |
2098 | t = build2 (NE_EXPR, TREE_TYPE (t), | |
2099 | TREE_OPERAND (t, 0), TREE_OPERAND (t, 1)); | |
2100 | ||
726a989a RB |
2101 | if (is_gimple_condexpr (t)) |
2102 | return t; | |
2103 | ||
2104 | return NULL_TREE; | |
2105 | } | |
2106 | ||
e6c99067 DN |
2107 | /* Build a GIMPLE_CALL identical to STMT but skipping the arguments in |
2108 | the positions marked by the set ARGS_TO_SKIP. */ | |
2109 | ||
538dd0b7 DM |
2110 | gcall * |
2111 | gimple_call_copy_skip_args (gcall *stmt, bitmap args_to_skip) | |
c6f7cfc1 JH |
2112 | { |
2113 | int i; | |
c6f7cfc1 | 2114 | int nargs = gimple_call_num_args (stmt); |
ef062b13 | 2115 | auto_vec<tree> vargs (nargs); |
538dd0b7 | 2116 | gcall *new_stmt; |
c6f7cfc1 JH |
2117 | |
2118 | for (i = 0; i < nargs; i++) | |
2119 | if (!bitmap_bit_p (args_to_skip, i)) | |
9771b263 | 2120 | vargs.quick_push (gimple_call_arg (stmt, i)); |
c6f7cfc1 | 2121 | |
25583c4f RS |
2122 | if (gimple_call_internal_p (stmt)) |
2123 | new_stmt = gimple_build_call_internal_vec (gimple_call_internal_fn (stmt), | |
2124 | vargs); | |
2125 | else | |
2126 | new_stmt = gimple_build_call_vec (gimple_call_fn (stmt), vargs); | |
ef062b13 | 2127 | |
c6f7cfc1 JH |
2128 | if (gimple_call_lhs (stmt)) |
2129 | gimple_call_set_lhs (new_stmt, gimple_call_lhs (stmt)); | |
2130 | ||
5006671f RG |
2131 | gimple_set_vuse (new_stmt, gimple_vuse (stmt)); |
2132 | gimple_set_vdef (new_stmt, gimple_vdef (stmt)); | |
2133 | ||
c6f7cfc1 JH |
2134 | if (gimple_has_location (stmt)) |
2135 | gimple_set_location (new_stmt, gimple_location (stmt)); | |
8d2adc24 | 2136 | gimple_call_copy_flags (new_stmt, stmt); |
c6f7cfc1 | 2137 | gimple_call_set_chain (new_stmt, gimple_call_chain (stmt)); |
5006671f RG |
2138 | |
2139 | gimple_set_modified (new_stmt, true); | |
2140 | ||
c6f7cfc1 JH |
2141 | return new_stmt; |
2142 | } | |
2143 | ||
5006671f | 2144 | |
d7f09764 | 2145 | |
d025732d EB |
2146 | /* Return true if the field decls F1 and F2 are at the same offset. |
2147 | ||
91f2fae8 | 2148 | This is intended to be used on GIMPLE types only. */ |
d7f09764 | 2149 | |
1e4bc4eb | 2150 | bool |
d025732d | 2151 | gimple_compare_field_offset (tree f1, tree f2) |
d7f09764 DN |
2152 | { |
2153 | if (DECL_OFFSET_ALIGN (f1) == DECL_OFFSET_ALIGN (f2)) | |
d025732d EB |
2154 | { |
2155 | tree offset1 = DECL_FIELD_OFFSET (f1); | |
2156 | tree offset2 = DECL_FIELD_OFFSET (f2); | |
2157 | return ((offset1 == offset2 | |
2158 | /* Once gimplification is done, self-referential offsets are | |
2159 | instantiated as operand #2 of the COMPONENT_REF built for | |
2160 | each access and reset. Therefore, they are not relevant | |
2161 | anymore and fields are interchangeable provided that they | |
2162 | represent the same access. */ | |
2163 | || (TREE_CODE (offset1) == PLACEHOLDER_EXPR | |
2164 | && TREE_CODE (offset2) == PLACEHOLDER_EXPR | |
2165 | && (DECL_SIZE (f1) == DECL_SIZE (f2) | |
2166 | || (TREE_CODE (DECL_SIZE (f1)) == PLACEHOLDER_EXPR | |
2167 | && TREE_CODE (DECL_SIZE (f2)) == PLACEHOLDER_EXPR) | |
2168 | || operand_equal_p (DECL_SIZE (f1), DECL_SIZE (f2), 0)) | |
2169 | && DECL_ALIGN (f1) == DECL_ALIGN (f2)) | |
2170 | || operand_equal_p (offset1, offset2, 0)) | |
2171 | && tree_int_cst_equal (DECL_FIELD_BIT_OFFSET (f1), | |
2172 | DECL_FIELD_BIT_OFFSET (f2))); | |
2173 | } | |
d7f09764 DN |
2174 | |
2175 | /* Fortran and C do not always agree on what DECL_OFFSET_ALIGN | |
2176 | should be, so handle differing ones specially by decomposing | |
2177 | the offset into a byte and bit offset manually. */ | |
9541ffee RS |
2178 | if (tree_fits_shwi_p (DECL_FIELD_OFFSET (f1)) |
2179 | && tree_fits_shwi_p (DECL_FIELD_OFFSET (f2))) | |
d7f09764 DN |
2180 | { |
2181 | unsigned HOST_WIDE_INT byte_offset1, byte_offset2; | |
2182 | unsigned HOST_WIDE_INT bit_offset1, bit_offset2; | |
2183 | bit_offset1 = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f1)); | |
2184 | byte_offset1 = (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f1)) | |
2185 | + bit_offset1 / BITS_PER_UNIT); | |
2186 | bit_offset2 = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f2)); | |
2187 | byte_offset2 = (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f2)) | |
2188 | + bit_offset2 / BITS_PER_UNIT); | |
2189 | if (byte_offset1 != byte_offset2) | |
2190 | return false; | |
2191 | return bit_offset1 % BITS_PER_UNIT == bit_offset2 % BITS_PER_UNIT; | |
2192 | } | |
2193 | ||
2194 | return false; | |
2195 | } | |
2196 | ||
d7f09764 DN |
2197 | |
2198 | /* Return a type the same as TYPE except unsigned or | |
2199 | signed according to UNSIGNEDP. */ | |
2200 | ||
2201 | static tree | |
2202 | gimple_signed_or_unsigned_type (bool unsignedp, tree type) | |
2203 | { | |
2204 | tree type1; | |
78a7c317 | 2205 | int i; |
d7f09764 DN |
2206 | |
2207 | type1 = TYPE_MAIN_VARIANT (type); | |
2208 | if (type1 == signed_char_type_node | |
2209 | || type1 == char_type_node | |
2210 | || type1 == unsigned_char_type_node) | |
2211 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
2212 | if (type1 == integer_type_node || type1 == unsigned_type_node) | |
2213 | return unsignedp ? unsigned_type_node : integer_type_node; | |
2214 | if (type1 == short_integer_type_node || type1 == short_unsigned_type_node) | |
2215 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
2216 | if (type1 == long_integer_type_node || type1 == long_unsigned_type_node) | |
2217 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
2218 | if (type1 == long_long_integer_type_node | |
2219 | || type1 == long_long_unsigned_type_node) | |
2220 | return unsignedp | |
2221 | ? long_long_unsigned_type_node | |
2222 | : long_long_integer_type_node; | |
78a7c317 DD |
2223 | |
2224 | for (i = 0; i < NUM_INT_N_ENTS; i ++) | |
2225 | if (int_n_enabled_p[i] | |
2226 | && (type1 == int_n_trees[i].unsigned_type | |
2227 | || type1 == int_n_trees[i].signed_type)) | |
2228 | return unsignedp | |
2229 | ? int_n_trees[i].unsigned_type | |
2230 | : int_n_trees[i].signed_type; | |
2231 | ||
d7f09764 DN |
2232 | #if HOST_BITS_PER_WIDE_INT >= 64 |
2233 | if (type1 == intTI_type_node || type1 == unsigned_intTI_type_node) | |
2234 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
2235 | #endif | |
2236 | if (type1 == intDI_type_node || type1 == unsigned_intDI_type_node) | |
2237 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
2238 | if (type1 == intSI_type_node || type1 == unsigned_intSI_type_node) | |
2239 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
2240 | if (type1 == intHI_type_node || type1 == unsigned_intHI_type_node) | |
2241 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
2242 | if (type1 == intQI_type_node || type1 == unsigned_intQI_type_node) | |
2243 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
2244 | ||
2245 | #define GIMPLE_FIXED_TYPES(NAME) \ | |
2246 | if (type1 == short_ ## NAME ## _type_node \ | |
2247 | || type1 == unsigned_short_ ## NAME ## _type_node) \ | |
2248 | return unsignedp ? unsigned_short_ ## NAME ## _type_node \ | |
2249 | : short_ ## NAME ## _type_node; \ | |
2250 | if (type1 == NAME ## _type_node \ | |
2251 | || type1 == unsigned_ ## NAME ## _type_node) \ | |
2252 | return unsignedp ? unsigned_ ## NAME ## _type_node \ | |
2253 | : NAME ## _type_node; \ | |
2254 | if (type1 == long_ ## NAME ## _type_node \ | |
2255 | || type1 == unsigned_long_ ## NAME ## _type_node) \ | |
2256 | return unsignedp ? unsigned_long_ ## NAME ## _type_node \ | |
2257 | : long_ ## NAME ## _type_node; \ | |
2258 | if (type1 == long_long_ ## NAME ## _type_node \ | |
2259 | || type1 == unsigned_long_long_ ## NAME ## _type_node) \ | |
2260 | return unsignedp ? unsigned_long_long_ ## NAME ## _type_node \ | |
2261 | : long_long_ ## NAME ## _type_node; | |
2262 | ||
2263 | #define GIMPLE_FIXED_MODE_TYPES(NAME) \ | |
2264 | if (type1 == NAME ## _type_node \ | |
2265 | || type1 == u ## NAME ## _type_node) \ | |
2266 | return unsignedp ? u ## NAME ## _type_node \ | |
2267 | : NAME ## _type_node; | |
2268 | ||
2269 | #define GIMPLE_FIXED_TYPES_SAT(NAME) \ | |
2270 | if (type1 == sat_ ## short_ ## NAME ## _type_node \ | |
2271 | || type1 == sat_ ## unsigned_short_ ## NAME ## _type_node) \ | |
2272 | return unsignedp ? sat_ ## unsigned_short_ ## NAME ## _type_node \ | |
2273 | : sat_ ## short_ ## NAME ## _type_node; \ | |
2274 | if (type1 == sat_ ## NAME ## _type_node \ | |
2275 | || type1 == sat_ ## unsigned_ ## NAME ## _type_node) \ | |
2276 | return unsignedp ? sat_ ## unsigned_ ## NAME ## _type_node \ | |
2277 | : sat_ ## NAME ## _type_node; \ | |
2278 | if (type1 == sat_ ## long_ ## NAME ## _type_node \ | |
2279 | || type1 == sat_ ## unsigned_long_ ## NAME ## _type_node) \ | |
2280 | return unsignedp ? sat_ ## unsigned_long_ ## NAME ## _type_node \ | |
2281 | : sat_ ## long_ ## NAME ## _type_node; \ | |
2282 | if (type1 == sat_ ## long_long_ ## NAME ## _type_node \ | |
2283 | || type1 == sat_ ## unsigned_long_long_ ## NAME ## _type_node) \ | |
2284 | return unsignedp ? sat_ ## unsigned_long_long_ ## NAME ## _type_node \ | |
2285 | : sat_ ## long_long_ ## NAME ## _type_node; | |
2286 | ||
2287 | #define GIMPLE_FIXED_MODE_TYPES_SAT(NAME) \ | |
2288 | if (type1 == sat_ ## NAME ## _type_node \ | |
2289 | || type1 == sat_ ## u ## NAME ## _type_node) \ | |
2290 | return unsignedp ? sat_ ## u ## NAME ## _type_node \ | |
2291 | : sat_ ## NAME ## _type_node; | |
2292 | ||
2293 | GIMPLE_FIXED_TYPES (fract); | |
2294 | GIMPLE_FIXED_TYPES_SAT (fract); | |
2295 | GIMPLE_FIXED_TYPES (accum); | |
2296 | GIMPLE_FIXED_TYPES_SAT (accum); | |
2297 | ||
2298 | GIMPLE_FIXED_MODE_TYPES (qq); | |
2299 | GIMPLE_FIXED_MODE_TYPES (hq); | |
2300 | GIMPLE_FIXED_MODE_TYPES (sq); | |
2301 | GIMPLE_FIXED_MODE_TYPES (dq); | |
2302 | GIMPLE_FIXED_MODE_TYPES (tq); | |
2303 | GIMPLE_FIXED_MODE_TYPES_SAT (qq); | |
2304 | GIMPLE_FIXED_MODE_TYPES_SAT (hq); | |
2305 | GIMPLE_FIXED_MODE_TYPES_SAT (sq); | |
2306 | GIMPLE_FIXED_MODE_TYPES_SAT (dq); | |
2307 | GIMPLE_FIXED_MODE_TYPES_SAT (tq); | |
2308 | GIMPLE_FIXED_MODE_TYPES (ha); | |
2309 | GIMPLE_FIXED_MODE_TYPES (sa); | |
2310 | GIMPLE_FIXED_MODE_TYPES (da); | |
2311 | GIMPLE_FIXED_MODE_TYPES (ta); | |
2312 | GIMPLE_FIXED_MODE_TYPES_SAT (ha); | |
2313 | GIMPLE_FIXED_MODE_TYPES_SAT (sa); | |
2314 | GIMPLE_FIXED_MODE_TYPES_SAT (da); | |
2315 | GIMPLE_FIXED_MODE_TYPES_SAT (ta); | |
2316 | ||
2317 | /* For ENUMERAL_TYPEs in C++, must check the mode of the types, not | |
2318 | the precision; they have precision set to match their range, but | |
2319 | may use a wider mode to match an ABI. If we change modes, we may | |
2320 | wind up with bad conversions. For INTEGER_TYPEs in C, must check | |
2321 | the precision as well, so as to yield correct results for | |
2322 | bit-field types. C++ does not have these separate bit-field | |
2323 | types, and producing a signed or unsigned variant of an | |
2324 | ENUMERAL_TYPE may cause other problems as well. */ | |
2325 | if (!INTEGRAL_TYPE_P (type) | |
2326 | || TYPE_UNSIGNED (type) == unsignedp) | |
2327 | return type; | |
2328 | ||
2329 | #define TYPE_OK(node) \ | |
2330 | (TYPE_MODE (type) == TYPE_MODE (node) \ | |
2331 | && TYPE_PRECISION (type) == TYPE_PRECISION (node)) | |
2332 | if (TYPE_OK (signed_char_type_node)) | |
2333 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
2334 | if (TYPE_OK (integer_type_node)) | |
2335 | return unsignedp ? unsigned_type_node : integer_type_node; | |
2336 | if (TYPE_OK (short_integer_type_node)) | |
2337 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
2338 | if (TYPE_OK (long_integer_type_node)) | |
2339 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
2340 | if (TYPE_OK (long_long_integer_type_node)) | |
2341 | return (unsignedp | |
2342 | ? long_long_unsigned_type_node | |
2343 | : long_long_integer_type_node); | |
78a7c317 DD |
2344 | |
2345 | for (i = 0; i < NUM_INT_N_ENTS; i ++) | |
2346 | if (int_n_enabled_p[i] | |
2347 | && TYPE_MODE (type) == int_n_data[i].m | |
2348 | && TYPE_PRECISION (type) == int_n_data[i].bitsize) | |
2349 | return unsignedp | |
2350 | ? int_n_trees[i].unsigned_type | |
2351 | : int_n_trees[i].signed_type; | |
d7f09764 DN |
2352 | |
2353 | #if HOST_BITS_PER_WIDE_INT >= 64 | |
2354 | if (TYPE_OK (intTI_type_node)) | |
2355 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
2356 | #endif | |
2357 | if (TYPE_OK (intDI_type_node)) | |
2358 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
2359 | if (TYPE_OK (intSI_type_node)) | |
2360 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
2361 | if (TYPE_OK (intHI_type_node)) | |
2362 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
2363 | if (TYPE_OK (intQI_type_node)) | |
2364 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
2365 | ||
2366 | #undef GIMPLE_FIXED_TYPES | |
2367 | #undef GIMPLE_FIXED_MODE_TYPES | |
2368 | #undef GIMPLE_FIXED_TYPES_SAT | |
2369 | #undef GIMPLE_FIXED_MODE_TYPES_SAT | |
2370 | #undef TYPE_OK | |
2371 | ||
2372 | return build_nonstandard_integer_type (TYPE_PRECISION (type), unsignedp); | |
2373 | } | |
2374 | ||
2375 | ||
2376 | /* Return an unsigned type the same as TYPE in other respects. */ | |
2377 | ||
2378 | tree | |
2379 | gimple_unsigned_type (tree type) | |
2380 | { | |
2381 | return gimple_signed_or_unsigned_type (true, type); | |
2382 | } | |
2383 | ||
2384 | ||
2385 | /* Return a signed type the same as TYPE in other respects. */ | |
2386 | ||
2387 | tree | |
2388 | gimple_signed_type (tree type) | |
2389 | { | |
2390 | return gimple_signed_or_unsigned_type (false, type); | |
2391 | } | |
2392 | ||
2393 | ||
2394 | /* Return the typed-based alias set for T, which may be an expression | |
2395 | or a type. Return -1 if we don't do anything special. */ | |
2396 | ||
2397 | alias_set_type | |
2398 | gimple_get_alias_set (tree t) | |
2399 | { | |
2400 | tree u; | |
2401 | ||
2402 | /* Permit type-punning when accessing a union, provided the access | |
2403 | is directly through the union. For example, this code does not | |
2404 | permit taking the address of a union member and then storing | |
2405 | through it. Even the type-punning allowed here is a GCC | |
2406 | extension, albeit a common and useful one; the C standard says | |
2407 | that such accesses have implementation-defined behavior. */ | |
2408 | for (u = t; | |
2409 | TREE_CODE (u) == COMPONENT_REF || TREE_CODE (u) == ARRAY_REF; | |
2410 | u = TREE_OPERAND (u, 0)) | |
2411 | if (TREE_CODE (u) == COMPONENT_REF | |
2412 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (u, 0))) == UNION_TYPE) | |
2413 | return 0; | |
2414 | ||
2415 | /* That's all the expressions we handle specially. */ | |
2416 | if (!TYPE_P (t)) | |
2417 | return -1; | |
2418 | ||
2419 | /* For convenience, follow the C standard when dealing with | |
2420 | character types. Any object may be accessed via an lvalue that | |
2421 | has character type. */ | |
2422 | if (t == char_type_node | |
2423 | || t == signed_char_type_node | |
2424 | || t == unsigned_char_type_node) | |
2425 | return 0; | |
2426 | ||
2427 | /* Allow aliasing between signed and unsigned variants of the same | |
2428 | type. We treat the signed variant as canonical. */ | |
2429 | if (TREE_CODE (t) == INTEGER_TYPE && TYPE_UNSIGNED (t)) | |
2430 | { | |
2431 | tree t1 = gimple_signed_type (t); | |
2432 | ||
2433 | /* t1 == t can happen for boolean nodes which are always unsigned. */ | |
2434 | if (t1 != t) | |
2435 | return get_alias_set (t1); | |
2436 | } | |
d7f09764 DN |
2437 | |
2438 | return -1; | |
2439 | } | |
2440 | ||
2441 | ||
ccacdf06 RG |
2442 | /* Helper for gimple_ior_addresses_taken_1. */ |
2443 | ||
2444 | static bool | |
355fe088 | 2445 | gimple_ior_addresses_taken_1 (gimple *, tree addr, tree, void *data) |
ccacdf06 RG |
2446 | { |
2447 | bitmap addresses_taken = (bitmap)data; | |
2ea9dc64 RG |
2448 | addr = get_base_address (addr); |
2449 | if (addr | |
2450 | && DECL_P (addr)) | |
ccacdf06 RG |
2451 | { |
2452 | bitmap_set_bit (addresses_taken, DECL_UID (addr)); | |
2453 | return true; | |
2454 | } | |
2455 | return false; | |
2456 | } | |
2457 | ||
2458 | /* Set the bit for the uid of all decls that have their address taken | |
2459 | in STMT in the ADDRESSES_TAKEN bitmap. Returns true if there | |
2460 | were any in this stmt. */ | |
2461 | ||
2462 | bool | |
355fe088 | 2463 | gimple_ior_addresses_taken (bitmap addresses_taken, gimple *stmt) |
ccacdf06 RG |
2464 | { |
2465 | return walk_stmt_load_store_addr_ops (stmt, addresses_taken, NULL, NULL, | |
2466 | gimple_ior_addresses_taken_1); | |
2467 | } | |
2468 | ||
4537ec0c | 2469 | |
5c944c6c RB |
2470 | /* Return true when STMTs arguments and return value match those of FNDECL, |
2471 | a decl of a builtin function. */ | |
3626621a | 2472 | |
5c944c6c | 2473 | bool |
355fe088 | 2474 | gimple_builtin_call_types_compatible_p (const gimple *stmt, tree fndecl) |
3626621a | 2475 | { |
5c944c6c RB |
2476 | gcc_checking_assert (DECL_BUILT_IN_CLASS (fndecl) != NOT_BUILT_IN); |
2477 | ||
2478 | tree ret = gimple_call_lhs (stmt); | |
2479 | if (ret | |
2ad3adf1 JJ |
2480 | && !useless_type_conversion_p (TREE_TYPE (ret), |
2481 | TREE_TYPE (TREE_TYPE (fndecl)))) | |
5c944c6c RB |
2482 | return false; |
2483 | ||
3626621a RB |
2484 | tree targs = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
2485 | unsigned nargs = gimple_call_num_args (stmt); | |
2486 | for (unsigned i = 0; i < nargs; ++i) | |
2487 | { | |
2488 | /* Variadic args follow. */ | |
2489 | if (!targs) | |
2490 | return true; | |
2491 | tree arg = gimple_call_arg (stmt, i); | |
fd39794a JJ |
2492 | tree type = TREE_VALUE (targs); |
2493 | if (!useless_type_conversion_p (type, TREE_TYPE (arg)) | |
2494 | /* char/short integral arguments are promoted to int | |
2495 | by several frontends if targetm.calls.promote_prototypes | |
2496 | is true. Allow such promotion too. */ | |
2497 | && !(INTEGRAL_TYPE_P (type) | |
2498 | && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node) | |
2499 | && targetm.calls.promote_prototypes (TREE_TYPE (fndecl)) | |
2500 | && useless_type_conversion_p (integer_type_node, | |
2501 | TREE_TYPE (arg)))) | |
3626621a RB |
2502 | return false; |
2503 | targs = TREE_CHAIN (targs); | |
2504 | } | |
2505 | if (targs && !VOID_TYPE_P (TREE_VALUE (targs))) | |
2506 | return false; | |
2507 | return true; | |
2508 | } | |
2509 | ||
5c944c6c RB |
2510 | /* Return true when STMT is builtins call. */ |
2511 | ||
2512 | bool | |
355fe088 | 2513 | gimple_call_builtin_p (const gimple *stmt) |
5c944c6c RB |
2514 | { |
2515 | tree fndecl; | |
2516 | if (is_gimple_call (stmt) | |
2517 | && (fndecl = gimple_call_fndecl (stmt)) != NULL_TREE | |
2518 | && DECL_BUILT_IN_CLASS (fndecl) != NOT_BUILT_IN) | |
2519 | return gimple_builtin_call_types_compatible_p (stmt, fndecl); | |
2520 | return false; | |
2521 | } | |
2522 | ||
3626621a RB |
2523 | /* Return true when STMT is builtins call to CLASS. */ |
2524 | ||
2525 | bool | |
355fe088 | 2526 | gimple_call_builtin_p (const gimple *stmt, enum built_in_class klass) |
3626621a RB |
2527 | { |
2528 | tree fndecl; | |
2529 | if (is_gimple_call (stmt) | |
2530 | && (fndecl = gimple_call_fndecl (stmt)) != NULL_TREE | |
2531 | && DECL_BUILT_IN_CLASS (fndecl) == klass) | |
5c944c6c | 2532 | return gimple_builtin_call_types_compatible_p (stmt, fndecl); |
3626621a RB |
2533 | return false; |
2534 | } | |
2535 | ||
2536 | /* Return true when STMT is builtins call to CODE of CLASS. */ | |
c54c785d JH |
2537 | |
2538 | bool | |
355fe088 | 2539 | gimple_call_builtin_p (const gimple *stmt, enum built_in_function code) |
c54c785d JH |
2540 | { |
2541 | tree fndecl; | |
3626621a RB |
2542 | if (is_gimple_call (stmt) |
2543 | && (fndecl = gimple_call_fndecl (stmt)) != NULL_TREE | |
2544 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
2545 | && DECL_FUNCTION_CODE (fndecl) == code) | |
5c944c6c | 2546 | return gimple_builtin_call_types_compatible_p (stmt, fndecl); |
3626621a | 2547 | return false; |
c54c785d JH |
2548 | } |
2549 | ||
00175cb2 RS |
2550 | /* If CALL is a call to a combined_fn (i.e. an internal function or |
2551 | a normal built-in function), return its code, otherwise return | |
2552 | CFN_LAST. */ | |
2553 | ||
2554 | combined_fn | |
2555 | gimple_call_combined_fn (const gimple *stmt) | |
2556 | { | |
2557 | if (const gcall *call = dyn_cast <const gcall *> (stmt)) | |
2558 | { | |
2559 | if (gimple_call_internal_p (call)) | |
2560 | return as_combined_fn (gimple_call_internal_fn (call)); | |
2561 | ||
2562 | tree fndecl = gimple_call_fndecl (stmt); | |
2563 | if (fndecl | |
2564 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
2565 | && gimple_builtin_call_types_compatible_p (stmt, fndecl)) | |
2566 | return as_combined_fn (DECL_FUNCTION_CODE (fndecl)); | |
2567 | } | |
2568 | return CFN_LAST; | |
2569 | } | |
2570 | ||
edcdea5b NF |
2571 | /* Return true if STMT clobbers memory. STMT is required to be a |
2572 | GIMPLE_ASM. */ | |
2573 | ||
2574 | bool | |
538dd0b7 | 2575 | gimple_asm_clobbers_memory_p (const gasm *stmt) |
edcdea5b NF |
2576 | { |
2577 | unsigned i; | |
2578 | ||
2579 | for (i = 0; i < gimple_asm_nclobbers (stmt); i++) | |
2580 | { | |
2581 | tree op = gimple_asm_clobber_op (stmt, i); | |
2582 | if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op)), "memory") == 0) | |
2583 | return true; | |
2584 | } | |
2585 | ||
93671519 BE |
2586 | /* Non-empty basic ASM implicitly clobbers memory. */ |
2587 | if (gimple_asm_input_p (stmt) && strlen (gimple_asm_string (stmt)) != 0) | |
2588 | return true; | |
2589 | ||
edcdea5b NF |
2590 | return false; |
2591 | } | |
475b8f37 | 2592 | |
80560f95 AM |
2593 | /* Dump bitmap SET (assumed to contain VAR_DECLs) to FILE. */ |
2594 | ||
2595 | void | |
2596 | dump_decl_set (FILE *file, bitmap set) | |
2597 | { | |
2598 | if (set) | |
2599 | { | |
2600 | bitmap_iterator bi; | |
2601 | unsigned i; | |
2602 | ||
2603 | fprintf (file, "{ "); | |
2604 | ||
2605 | EXECUTE_IF_SET_IN_BITMAP (set, 0, i, bi) | |
2606 | { | |
2607 | fprintf (file, "D.%u", i); | |
2608 | fprintf (file, " "); | |
2609 | } | |
2610 | ||
2611 | fprintf (file, "}"); | |
2612 | } | |
2613 | else | |
2614 | fprintf (file, "NIL"); | |
2615 | } | |
7a300452 | 2616 | |
3d9c733e AM |
2617 | /* Return true when CALL is a call stmt that definitely doesn't |
2618 | free any memory or makes it unavailable otherwise. */ | |
2619 | bool | |
355fe088 | 2620 | nonfreeing_call_p (gimple *call) |
3d9c733e AM |
2621 | { |
2622 | if (gimple_call_builtin_p (call, BUILT_IN_NORMAL) | |
2623 | && gimple_call_flags (call) & ECF_LEAF) | |
2624 | switch (DECL_FUNCTION_CODE (gimple_call_fndecl (call))) | |
2625 | { | |
2626 | /* Just in case these become ECF_LEAF in the future. */ | |
2627 | case BUILT_IN_FREE: | |
2628 | case BUILT_IN_TM_FREE: | |
2629 | case BUILT_IN_REALLOC: | |
2630 | case BUILT_IN_STACK_RESTORE: | |
2631 | return false; | |
2632 | default: | |
2633 | return true; | |
2634 | } | |
8413ca87 JJ |
2635 | else if (gimple_call_internal_p (call)) |
2636 | switch (gimple_call_internal_fn (call)) | |
2637 | { | |
2638 | case IFN_ABNORMAL_DISPATCHER: | |
2639 | return true; | |
2640 | default: | |
2641 | if (gimple_call_flags (call) & ECF_LEAF) | |
2642 | return true; | |
2643 | return false; | |
2644 | } | |
3d9c733e | 2645 | |
8413ca87 JJ |
2646 | tree fndecl = gimple_call_fndecl (call); |
2647 | if (!fndecl) | |
2648 | return false; | |
2649 | struct cgraph_node *n = cgraph_node::get (fndecl); | |
2650 | if (!n) | |
2651 | return false; | |
2652 | enum availability availability; | |
2653 | n = n->function_symbol (&availability); | |
2654 | if (!n || availability <= AVAIL_INTERPOSABLE) | |
2655 | return false; | |
2656 | return n->nonfreeing_fn; | |
3d9c733e | 2657 | } |
8fdc414d | 2658 | |
c000cd7c BS |
2659 | /* Return true when CALL is a call stmt that definitely need not |
2660 | be considered to be a memory barrier. */ | |
2661 | bool | |
2662 | nonbarrier_call_p (gimple *call) | |
2663 | { | |
2664 | if (gimple_call_flags (call) & (ECF_PURE | ECF_CONST)) | |
2665 | return true; | |
2666 | /* Should extend this to have a nonbarrier_fn flag, just as above in | |
2667 | the nonfreeing case. */ | |
2668 | return false; | |
2669 | } | |
2670 | ||
8fdc414d JL |
2671 | /* Callback for walk_stmt_load_store_ops. |
2672 | ||
2673 | Return TRUE if OP will dereference the tree stored in DATA, FALSE | |
2674 | otherwise. | |
2675 | ||
2676 | This routine only makes a superficial check for a dereference. Thus | |
2677 | it must only be used if it is safe to return a false negative. */ | |
2678 | static bool | |
355fe088 | 2679 | check_loadstore (gimple *, tree op, tree, void *data) |
8fdc414d | 2680 | { |
6626f970 RH |
2681 | if (TREE_CODE (op) == MEM_REF || TREE_CODE (op) == TARGET_MEM_REF) |
2682 | { | |
2683 | /* Some address spaces may legitimately dereference zero. */ | |
2684 | addr_space_t as = TYPE_ADDR_SPACE (TREE_TYPE (op)); | |
2685 | if (targetm.addr_space.zero_address_valid (as)) | |
2686 | return false; | |
2687 | ||
2688 | return operand_equal_p (TREE_OPERAND (op, 0), (tree)data, 0); | |
2689 | } | |
8fdc414d JL |
2690 | return false; |
2691 | } | |
2692 | ||
ae93744d | 2693 | |
76787f70 MLI |
2694 | /* Return true if OP can be inferred to be non-NULL after STMT executes, |
2695 | either by using a pointer dereference or attributes. */ | |
2696 | bool | |
355fe088 | 2697 | infer_nonnull_range (gimple *stmt, tree op) |
76787f70 MLI |
2698 | { |
2699 | return infer_nonnull_range_by_dereference (stmt, op) | |
2700 | || infer_nonnull_range_by_attribute (stmt, op); | |
2701 | } | |
8fdc414d | 2702 | |
76787f70 MLI |
2703 | /* Return true if OP can be inferred to be non-NULL after STMT |
2704 | executes by using a pointer dereference. */ | |
8fdc414d | 2705 | bool |
355fe088 | 2706 | infer_nonnull_range_by_dereference (gimple *stmt, tree op) |
8fdc414d JL |
2707 | { |
2708 | /* We can only assume that a pointer dereference will yield | |
2709 | non-NULL if -fdelete-null-pointer-checks is enabled. */ | |
2710 | if (!flag_delete_null_pointer_checks | |
2711 | || !POINTER_TYPE_P (TREE_TYPE (op)) | |
2712 | || gimple_code (stmt) == GIMPLE_ASM) | |
2713 | return false; | |
2714 | ||
76787f70 MLI |
2715 | if (walk_stmt_load_store_ops (stmt, (void *)op, |
2716 | check_loadstore, check_loadstore)) | |
8fdc414d JL |
2717 | return true; |
2718 | ||
76787f70 MLI |
2719 | return false; |
2720 | } | |
2721 | ||
2722 | /* Return true if OP can be inferred to be a non-NULL after STMT | |
2723 | executes by using attributes. */ | |
2724 | bool | |
355fe088 | 2725 | infer_nonnull_range_by_attribute (gimple *stmt, tree op) |
76787f70 MLI |
2726 | { |
2727 | /* We can only assume that a pointer dereference will yield | |
2728 | non-NULL if -fdelete-null-pointer-checks is enabled. */ | |
2729 | if (!flag_delete_null_pointer_checks | |
2730 | || !POINTER_TYPE_P (TREE_TYPE (op)) | |
2731 | || gimple_code (stmt) == GIMPLE_ASM) | |
2732 | return false; | |
2733 | ||
2734 | if (is_gimple_call (stmt) && !gimple_call_internal_p (stmt)) | |
8fdc414d JL |
2735 | { |
2736 | tree fntype = gimple_call_fntype (stmt); | |
2737 | tree attrs = TYPE_ATTRIBUTES (fntype); | |
2738 | for (; attrs; attrs = TREE_CHAIN (attrs)) | |
2739 | { | |
2740 | attrs = lookup_attribute ("nonnull", attrs); | |
2741 | ||
2742 | /* If "nonnull" wasn't specified, we know nothing about | |
2743 | the argument. */ | |
2744 | if (attrs == NULL_TREE) | |
2745 | return false; | |
2746 | ||
2747 | /* If "nonnull" applies to all the arguments, then ARG | |
2748 | is non-null if it's in the argument list. */ | |
2749 | if (TREE_VALUE (attrs) == NULL_TREE) | |
2750 | { | |
2751 | for (unsigned int i = 0; i < gimple_call_num_args (stmt); i++) | |
2752 | { | |
36f291f7 PP |
2753 | if (POINTER_TYPE_P (TREE_TYPE (gimple_call_arg (stmt, i))) |
2754 | && operand_equal_p (op, gimple_call_arg (stmt, i), 0)) | |
8fdc414d JL |
2755 | return true; |
2756 | } | |
2757 | return false; | |
2758 | } | |
2759 | ||
2760 | /* Now see if op appears in the nonnull list. */ | |
2761 | for (tree t = TREE_VALUE (attrs); t; t = TREE_CHAIN (t)) | |
2762 | { | |
e37dcf45 MP |
2763 | unsigned int idx = TREE_INT_CST_LOW (TREE_VALUE (t)) - 1; |
2764 | if (idx < gimple_call_num_args (stmt)) | |
2765 | { | |
2766 | tree arg = gimple_call_arg (stmt, idx); | |
2767 | if (operand_equal_p (op, arg, 0)) | |
2768 | return true; | |
2769 | } | |
8fdc414d JL |
2770 | } |
2771 | } | |
2772 | } | |
2773 | ||
2774 | /* If this function is marked as returning non-null, then we can | |
2775 | infer OP is non-null if it is used in the return statement. */ | |
76787f70 MLI |
2776 | if (greturn *return_stmt = dyn_cast <greturn *> (stmt)) |
2777 | if (gimple_return_retval (return_stmt) | |
2778 | && operand_equal_p (gimple_return_retval (return_stmt), op, 0) | |
2779 | && lookup_attribute ("returns_nonnull", | |
2780 | TYPE_ATTRIBUTES (TREE_TYPE (current_function_decl)))) | |
2781 | return true; | |
8fdc414d JL |
2782 | |
2783 | return false; | |
2784 | } | |
45b0be94 AM |
2785 | |
2786 | /* Compare two case labels. Because the front end should already have | |
2787 | made sure that case ranges do not overlap, it is enough to only compare | |
2788 | the CASE_LOW values of each case label. */ | |
2789 | ||
2790 | static int | |
2791 | compare_case_labels (const void *p1, const void *p2) | |
2792 | { | |
2793 | const_tree const case1 = *(const_tree const*)p1; | |
2794 | const_tree const case2 = *(const_tree const*)p2; | |
2795 | ||
2796 | /* The 'default' case label always goes first. */ | |
2797 | if (!CASE_LOW (case1)) | |
2798 | return -1; | |
2799 | else if (!CASE_LOW (case2)) | |
2800 | return 1; | |
2801 | else | |
2802 | return tree_int_cst_compare (CASE_LOW (case1), CASE_LOW (case2)); | |
2803 | } | |
2804 | ||
2805 | /* Sort the case labels in LABEL_VEC in place in ascending order. */ | |
2806 | ||
2807 | void | |
2808 | sort_case_labels (vec<tree> label_vec) | |
2809 | { | |
2810 | label_vec.qsort (compare_case_labels); | |
2811 | } | |
2812 | \f | |
2813 | /* Prepare a vector of case labels to be used in a GIMPLE_SWITCH statement. | |
2814 | ||
2815 | LABELS is a vector that contains all case labels to look at. | |
2816 | ||
2817 | INDEX_TYPE is the type of the switch index expression. Case labels | |
2818 | in LABELS are discarded if their values are not in the value range | |
2819 | covered by INDEX_TYPE. The remaining case label values are folded | |
2820 | to INDEX_TYPE. | |
2821 | ||
2822 | If a default case exists in LABELS, it is removed from LABELS and | |
2823 | returned in DEFAULT_CASEP. If no default case exists, but the | |
2824 | case labels already cover the whole range of INDEX_TYPE, a default | |
2825 | case is returned pointing to one of the existing case labels. | |
2826 | Otherwise DEFAULT_CASEP is set to NULL_TREE. | |
2827 | ||
2828 | DEFAULT_CASEP may be NULL, in which case the above comment doesn't | |
2829 | apply and no action is taken regardless of whether a default case is | |
2830 | found or not. */ | |
2831 | ||
2832 | void | |
2833 | preprocess_case_label_vec_for_gimple (vec<tree> labels, | |
2834 | tree index_type, | |
2835 | tree *default_casep) | |
2836 | { | |
2837 | tree min_value, max_value; | |
2838 | tree default_case = NULL_TREE; | |
2839 | size_t i, len; | |
2840 | ||
2841 | i = 0; | |
2842 | min_value = TYPE_MIN_VALUE (index_type); | |
2843 | max_value = TYPE_MAX_VALUE (index_type); | |
2844 | while (i < labels.length ()) | |
2845 | { | |
2846 | tree elt = labels[i]; | |
2847 | tree low = CASE_LOW (elt); | |
2848 | tree high = CASE_HIGH (elt); | |
2849 | bool remove_element = FALSE; | |
2850 | ||
2851 | if (low) | |
2852 | { | |
2853 | gcc_checking_assert (TREE_CODE (low) == INTEGER_CST); | |
2854 | gcc_checking_assert (!high || TREE_CODE (high) == INTEGER_CST); | |
2855 | ||
2856 | /* This is a non-default case label, i.e. it has a value. | |
2857 | ||
2858 | See if the case label is reachable within the range of | |
2859 | the index type. Remove out-of-range case values. Turn | |
2860 | case ranges into a canonical form (high > low strictly) | |
2861 | and convert the case label values to the index type. | |
2862 | ||
2863 | NB: The type of gimple_switch_index() may be the promoted | |
2864 | type, but the case labels retain the original type. */ | |
2865 | ||
2866 | if (high) | |
2867 | { | |
2868 | /* This is a case range. Discard empty ranges. | |
2869 | If the bounds or the range are equal, turn this | |
2870 | into a simple (one-value) case. */ | |
2871 | int cmp = tree_int_cst_compare (high, low); | |
2872 | if (cmp < 0) | |
2873 | remove_element = TRUE; | |
2874 | else if (cmp == 0) | |
2875 | high = NULL_TREE; | |
2876 | } | |
2877 | ||
2878 | if (! high) | |
2879 | { | |
2880 | /* If the simple case value is unreachable, ignore it. */ | |
2881 | if ((TREE_CODE (min_value) == INTEGER_CST | |
2882 | && tree_int_cst_compare (low, min_value) < 0) | |
2883 | || (TREE_CODE (max_value) == INTEGER_CST | |
2884 | && tree_int_cst_compare (low, max_value) > 0)) | |
2885 | remove_element = TRUE; | |
2886 | else | |
2887 | low = fold_convert (index_type, low); | |
2888 | } | |
2889 | else | |
2890 | { | |
2891 | /* If the entire case range is unreachable, ignore it. */ | |
2892 | if ((TREE_CODE (min_value) == INTEGER_CST | |
2893 | && tree_int_cst_compare (high, min_value) < 0) | |
2894 | || (TREE_CODE (max_value) == INTEGER_CST | |
2895 | && tree_int_cst_compare (low, max_value) > 0)) | |
2896 | remove_element = TRUE; | |
2897 | else | |
2898 | { | |
2899 | /* If the lower bound is less than the index type's | |
2900 | minimum value, truncate the range bounds. */ | |
2901 | if (TREE_CODE (min_value) == INTEGER_CST | |
2902 | && tree_int_cst_compare (low, min_value) < 0) | |
2903 | low = min_value; | |
2904 | low = fold_convert (index_type, low); | |
2905 | ||
2906 | /* If the upper bound is greater than the index type's | |
2907 | maximum value, truncate the range bounds. */ | |
2908 | if (TREE_CODE (max_value) == INTEGER_CST | |
2909 | && tree_int_cst_compare (high, max_value) > 0) | |
2910 | high = max_value; | |
2911 | high = fold_convert (index_type, high); | |
2912 | ||
2913 | /* We may have folded a case range to a one-value case. */ | |
2914 | if (tree_int_cst_equal (low, high)) | |
2915 | high = NULL_TREE; | |
2916 | } | |
2917 | } | |
2918 | ||
2919 | CASE_LOW (elt) = low; | |
2920 | CASE_HIGH (elt) = high; | |
2921 | } | |
2922 | else | |
2923 | { | |
2924 | gcc_assert (!default_case); | |
2925 | default_case = elt; | |
2926 | /* The default case must be passed separately to the | |
2927 | gimple_build_switch routine. But if DEFAULT_CASEP | |
2928 | is NULL, we do not remove the default case (it would | |
2929 | be completely lost). */ | |
2930 | if (default_casep) | |
2931 | remove_element = TRUE; | |
2932 | } | |
2933 | ||
2934 | if (remove_element) | |
2935 | labels.ordered_remove (i); | |
2936 | else | |
2937 | i++; | |
2938 | } | |
2939 | len = i; | |
2940 | ||
2941 | if (!labels.is_empty ()) | |
2942 | sort_case_labels (labels); | |
2943 | ||
2944 | if (default_casep && !default_case) | |
2945 | { | |
2946 | /* If the switch has no default label, add one, so that we jump | |
2947 | around the switch body. If the labels already cover the whole | |
2948 | range of the switch index_type, add the default label pointing | |
2949 | to one of the existing labels. */ | |
2950 | if (len | |
2951 | && TYPE_MIN_VALUE (index_type) | |
2952 | && TYPE_MAX_VALUE (index_type) | |
2953 | && tree_int_cst_equal (CASE_LOW (labels[0]), | |
2954 | TYPE_MIN_VALUE (index_type))) | |
2955 | { | |
2956 | tree low, high = CASE_HIGH (labels[len - 1]); | |
2957 | if (!high) | |
2958 | high = CASE_LOW (labels[len - 1]); | |
2959 | if (tree_int_cst_equal (high, TYPE_MAX_VALUE (index_type))) | |
2960 | { | |
2961 | for (i = 1; i < len; i++) | |
2962 | { | |
2963 | high = CASE_LOW (labels[i]); | |
2964 | low = CASE_HIGH (labels[i - 1]); | |
2965 | if (!low) | |
2966 | low = CASE_LOW (labels[i - 1]); | |
807e902e | 2967 | if (wi::add (low, 1) != high) |
45b0be94 AM |
2968 | break; |
2969 | } | |
2970 | if (i == len) | |
2971 | { | |
2972 | tree label = CASE_LABEL (labels[0]); | |
2973 | default_case = build_case_label (NULL_TREE, NULL_TREE, | |
2974 | label); | |
2975 | } | |
2976 | } | |
2977 | } | |
2978 | } | |
2979 | ||
2980 | if (default_casep) | |
2981 | *default_casep = default_case; | |
2982 | } | |
5be5c238 AM |
2983 | |
2984 | /* Set the location of all statements in SEQ to LOC. */ | |
2985 | ||
2986 | void | |
2987 | gimple_seq_set_location (gimple_seq seq, location_t loc) | |
2988 | { | |
2989 | for (gimple_stmt_iterator i = gsi_start (seq); !gsi_end_p (i); gsi_next (&i)) | |
2990 | gimple_set_location (gsi_stmt (i), loc); | |
2991 | } | |
73049af5 JJ |
2992 | |
2993 | /* Release SSA_NAMEs in SEQ as well as the GIMPLE statements. */ | |
2994 | ||
2995 | void | |
2996 | gimple_seq_discard (gimple_seq seq) | |
2997 | { | |
2998 | gimple_stmt_iterator gsi; | |
2999 | ||
3000 | for (gsi = gsi_start (seq); !gsi_end_p (gsi); ) | |
3001 | { | |
355fe088 | 3002 | gimple *stmt = gsi_stmt (gsi); |
73049af5 JJ |
3003 | gsi_remove (&gsi, true); |
3004 | release_defs (stmt); | |
3005 | ggc_free (stmt); | |
3006 | } | |
3007 | } | |
0b986c6a JH |
3008 | |
3009 | /* See if STMT now calls function that takes no parameters and if so, drop | |
3010 | call arguments. This is used when devirtualization machinery redirects | |
538374e1 | 3011 | to __builtin_unreachable or __cxa_pure_virtual. */ |
0b986c6a JH |
3012 | |
3013 | void | |
355fe088 | 3014 | maybe_remove_unused_call_args (struct function *fn, gimple *stmt) |
0b986c6a JH |
3015 | { |
3016 | tree decl = gimple_call_fndecl (stmt); | |
3017 | if (TYPE_ARG_TYPES (TREE_TYPE (decl)) | |
3018 | && TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))) == void_type_node | |
3019 | && gimple_call_num_args (stmt)) | |
3020 | { | |
3021 | gimple_set_num_ops (stmt, 3); | |
3022 | update_stmt_fn (fn, stmt); | |
3023 | } | |
3024 | } |