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726a989a RB |
1 | /* Gimple IR support functions. |
2 | ||
cbe34bb5 | 3 | Copyright (C) 2007-2017 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" |
ce120587 | 41 | #include "builtins.h" |
d9b950dd DM |
42 | #include "selftest.h" |
43 | #include "gimple-pretty-print.h" | |
314e6352 ML |
44 | #include "stringpool.h" |
45 | #include "attribs.h" | |
6dc4a604 | 46 | #include "asan.h" |
726a989a | 47 | |
d7f09764 | 48 | |
f2c4a81c | 49 | /* All the tuples have their operand vector (if present) at the very bottom |
726a989a RB |
50 | of the structure. Therefore, the offset required to find the |
51 | operands vector the size of the structure minus the size of the 1 | |
52 | element tree array at the end (see gimple_ops). */ | |
f2c4a81c RH |
53 | #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) \ |
54 | (HAS_TREE_OP ? sizeof (struct STRUCT) - sizeof (tree) : 0), | |
6bc7bc14 | 55 | EXPORTED_CONST size_t gimple_ops_offset_[] = { |
f2c4a81c RH |
56 | #include "gsstruct.def" |
57 | }; | |
58 | #undef DEFGSSTRUCT | |
59 | ||
c3284718 | 60 | #define DEFGSSTRUCT(SYM, STRUCT, HAS_TREE_OP) sizeof (struct STRUCT), |
f2c4a81c RH |
61 | static const size_t gsstruct_code_size[] = { |
62 | #include "gsstruct.def" | |
63 | }; | |
64 | #undef DEFGSSTRUCT | |
65 | ||
66 | #define DEFGSCODE(SYM, NAME, GSSCODE) NAME, | |
67 | const char *const gimple_code_name[] = { | |
68 | #include "gimple.def" | |
69 | }; | |
70 | #undef DEFGSCODE | |
71 | ||
72 | #define DEFGSCODE(SYM, NAME, GSSCODE) GSSCODE, | |
73 | EXPORTED_CONST enum gimple_statement_structure_enum gss_for_code_[] = { | |
726a989a RB |
74 | #include "gimple.def" |
75 | }; | |
76 | #undef DEFGSCODE | |
77 | ||
726a989a RB |
78 | /* Gimple stats. */ |
79 | ||
80 | int gimple_alloc_counts[(int) gimple_alloc_kind_all]; | |
81 | int gimple_alloc_sizes[(int) gimple_alloc_kind_all]; | |
82 | ||
83 | /* Keep in sync with gimple.h:enum gimple_alloc_kind. */ | |
84 | static const char * const gimple_alloc_kind_names[] = { | |
85 | "assignments", | |
86 | "phi nodes", | |
87 | "conditionals", | |
726a989a RB |
88 | "everything else" |
89 | }; | |
90 | ||
bde351d5 RB |
91 | /* Static gimple tuple members. */ |
92 | const enum gimple_code gassign::code_; | |
003b40ae RB |
93 | const enum gimple_code gcall::code_; |
94 | const enum gimple_code gcond::code_; | |
bde351d5 RB |
95 | |
96 | ||
726a989a RB |
97 | /* Gimple tuple constructors. |
98 | Note: Any constructor taking a ``gimple_seq'' as a parameter, can | |
99 | be passed a NULL to start with an empty sequence. */ | |
100 | ||
101 | /* Set the code for statement G to CODE. */ | |
102 | ||
103 | static inline void | |
355fe088 | 104 | gimple_set_code (gimple *g, enum gimple_code code) |
726a989a | 105 | { |
daa6e488 | 106 | g->code = code; |
726a989a RB |
107 | } |
108 | ||
726a989a RB |
109 | /* Return the number of bytes needed to hold a GIMPLE statement with |
110 | code CODE. */ | |
111 | ||
f2c4a81c | 112 | static inline size_t |
726a989a RB |
113 | gimple_size (enum gimple_code code) |
114 | { | |
f2c4a81c | 115 | return gsstruct_code_size[gss_for_code (code)]; |
726a989a RB |
116 | } |
117 | ||
726a989a RB |
118 | /* Allocate memory for a GIMPLE statement with code CODE and NUM_OPS |
119 | operands. */ | |
120 | ||
355fe088 | 121 | gimple * |
9e2d7f46 | 122 | gimple_alloc (enum gimple_code code, unsigned num_ops MEM_STAT_DECL) |
726a989a RB |
123 | { |
124 | size_t size; | |
355fe088 | 125 | gimple *stmt; |
726a989a RB |
126 | |
127 | size = gimple_size (code); | |
128 | if (num_ops > 0) | |
129 | size += sizeof (tree) * (num_ops - 1); | |
130 | ||
7aa6d18a SB |
131 | if (GATHER_STATISTICS) |
132 | { | |
133 | enum gimple_alloc_kind kind = gimple_alloc_kind (code); | |
134 | gimple_alloc_counts[(int) kind]++; | |
135 | gimple_alloc_sizes[(int) kind] += size; | |
136 | } | |
726a989a | 137 | |
daa6e488 | 138 | stmt = ggc_alloc_cleared_gimple_statement_stat (size PASS_MEM_STAT); |
726a989a RB |
139 | gimple_set_code (stmt, code); |
140 | gimple_set_num_ops (stmt, num_ops); | |
141 | ||
142 | /* Do not call gimple_set_modified here as it has other side | |
143 | effects and this tuple is still not completely built. */ | |
daa6e488 | 144 | stmt->modified = 1; |
355a7673 | 145 | gimple_init_singleton (stmt); |
726a989a RB |
146 | |
147 | return stmt; | |
148 | } | |
149 | ||
150 | /* Set SUBCODE to be the code of the expression computed by statement G. */ | |
151 | ||
152 | static inline void | |
355fe088 | 153 | gimple_set_subcode (gimple *g, unsigned subcode) |
726a989a RB |
154 | { |
155 | /* We only have 16 bits for the RHS code. Assert that we are not | |
156 | overflowing it. */ | |
157 | gcc_assert (subcode < (1 << 16)); | |
daa6e488 | 158 | g->subcode = subcode; |
726a989a RB |
159 | } |
160 | ||
161 | ||
162 | ||
163 | /* Build a tuple with operands. CODE is the statement to build (which | |
7d05cebb | 164 | must be one of the GIMPLE_WITH_OPS tuples). SUBCODE is the subcode |
b8698a0f | 165 | for the new tuple. NUM_OPS is the number of operands to allocate. */ |
726a989a RB |
166 | |
167 | #define gimple_build_with_ops(c, s, n) \ | |
168 | gimple_build_with_ops_stat (c, s, n MEM_STAT_INFO) | |
169 | ||
355fe088 | 170 | static gimple * |
b5b8b0ac | 171 | gimple_build_with_ops_stat (enum gimple_code code, unsigned subcode, |
726a989a RB |
172 | unsigned num_ops MEM_STAT_DECL) |
173 | { | |
9e2d7f46 | 174 | gimple *s = gimple_alloc (code, num_ops PASS_MEM_STAT); |
726a989a RB |
175 | gimple_set_subcode (s, subcode); |
176 | ||
177 | return s; | |
178 | } | |
179 | ||
180 | ||
181 | /* Build a GIMPLE_RETURN statement returning RETVAL. */ | |
182 | ||
538dd0b7 | 183 | greturn * |
726a989a RB |
184 | gimple_build_return (tree retval) |
185 | { | |
538dd0b7 DM |
186 | greturn *s |
187 | = as_a <greturn *> (gimple_build_with_ops (GIMPLE_RETURN, ERROR_MARK, | |
188 | 2)); | |
726a989a RB |
189 | if (retval) |
190 | gimple_return_set_retval (s, retval); | |
191 | return s; | |
192 | } | |
193 | ||
d086d311 RG |
194 | /* Reset alias information on call S. */ |
195 | ||
196 | void | |
538dd0b7 | 197 | gimple_call_reset_alias_info (gcall *s) |
d086d311 RG |
198 | { |
199 | if (gimple_call_flags (s) & ECF_CONST) | |
200 | memset (gimple_call_use_set (s), 0, sizeof (struct pt_solution)); | |
201 | else | |
202 | pt_solution_reset (gimple_call_use_set (s)); | |
203 | if (gimple_call_flags (s) & (ECF_CONST|ECF_PURE|ECF_NOVOPS)) | |
204 | memset (gimple_call_clobber_set (s), 0, sizeof (struct pt_solution)); | |
205 | else | |
206 | pt_solution_reset (gimple_call_clobber_set (s)); | |
207 | } | |
208 | ||
21860814 JJ |
209 | /* Helper for gimple_build_call, gimple_build_call_valist, |
210 | gimple_build_call_vec and gimple_build_call_from_tree. Build the basic | |
211 | components of a GIMPLE_CALL statement to function FN with NARGS | |
212 | arguments. */ | |
726a989a | 213 | |
538dd0b7 | 214 | static inline gcall * |
726a989a RB |
215 | gimple_build_call_1 (tree fn, unsigned nargs) |
216 | { | |
538dd0b7 DM |
217 | gcall *s |
218 | = as_a <gcall *> (gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, | |
219 | nargs + 3)); | |
7c9577be RG |
220 | if (TREE_CODE (fn) == FUNCTION_DECL) |
221 | fn = build_fold_addr_expr (fn); | |
726a989a | 222 | gimple_set_op (s, 1, fn); |
f20ca725 | 223 | gimple_call_set_fntype (s, TREE_TYPE (TREE_TYPE (fn))); |
d086d311 | 224 | gimple_call_reset_alias_info (s); |
726a989a RB |
225 | return s; |
226 | } | |
227 | ||
228 | ||
229 | /* Build a GIMPLE_CALL statement to function FN with the arguments | |
230 | specified in vector ARGS. */ | |
231 | ||
538dd0b7 | 232 | gcall * |
9771b263 | 233 | gimple_build_call_vec (tree fn, vec<tree> args) |
726a989a RB |
234 | { |
235 | unsigned i; | |
9771b263 | 236 | unsigned nargs = args.length (); |
538dd0b7 | 237 | gcall *call = gimple_build_call_1 (fn, nargs); |
726a989a RB |
238 | |
239 | for (i = 0; i < nargs; i++) | |
9771b263 | 240 | gimple_call_set_arg (call, i, args[i]); |
726a989a RB |
241 | |
242 | return call; | |
243 | } | |
244 | ||
245 | ||
246 | /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of | |
247 | arguments. The ... are the arguments. */ | |
248 | ||
538dd0b7 | 249 | gcall * |
726a989a RB |
250 | gimple_build_call (tree fn, unsigned nargs, ...) |
251 | { | |
252 | va_list ap; | |
538dd0b7 | 253 | gcall *call; |
726a989a RB |
254 | unsigned i; |
255 | ||
256 | gcc_assert (TREE_CODE (fn) == FUNCTION_DECL || is_gimple_call_addr (fn)); | |
257 | ||
258 | call = gimple_build_call_1 (fn, nargs); | |
259 | ||
260 | va_start (ap, nargs); | |
261 | for (i = 0; i < nargs; i++) | |
262 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
263 | va_end (ap); | |
264 | ||
265 | return call; | |
266 | } | |
267 | ||
268 | ||
21860814 JJ |
269 | /* Build a GIMPLE_CALL statement to function FN. NARGS is the number of |
270 | arguments. AP contains the arguments. */ | |
271 | ||
538dd0b7 | 272 | gcall * |
21860814 JJ |
273 | gimple_build_call_valist (tree fn, unsigned nargs, va_list ap) |
274 | { | |
538dd0b7 | 275 | gcall *call; |
21860814 JJ |
276 | unsigned i; |
277 | ||
278 | gcc_assert (TREE_CODE (fn) == FUNCTION_DECL || is_gimple_call_addr (fn)); | |
279 | ||
280 | call = gimple_build_call_1 (fn, nargs); | |
281 | ||
282 | for (i = 0; i < nargs; i++) | |
283 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
284 | ||
285 | return call; | |
286 | } | |
287 | ||
288 | ||
25583c4f RS |
289 | /* Helper for gimple_build_call_internal and gimple_build_call_internal_vec. |
290 | Build the basic components of a GIMPLE_CALL statement to internal | |
291 | function FN with NARGS arguments. */ | |
292 | ||
538dd0b7 | 293 | static inline gcall * |
25583c4f RS |
294 | gimple_build_call_internal_1 (enum internal_fn fn, unsigned nargs) |
295 | { | |
538dd0b7 DM |
296 | gcall *s |
297 | = as_a <gcall *> (gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, | |
298 | nargs + 3)); | |
daa6e488 | 299 | s->subcode |= GF_CALL_INTERNAL; |
25583c4f RS |
300 | gimple_call_set_internal_fn (s, fn); |
301 | gimple_call_reset_alias_info (s); | |
302 | return s; | |
303 | } | |
304 | ||
305 | ||
306 | /* Build a GIMPLE_CALL statement to internal function FN. NARGS is | |
307 | the number of arguments. The ... are the arguments. */ | |
308 | ||
538dd0b7 | 309 | gcall * |
25583c4f RS |
310 | gimple_build_call_internal (enum internal_fn fn, unsigned nargs, ...) |
311 | { | |
312 | va_list ap; | |
538dd0b7 | 313 | gcall *call; |
25583c4f RS |
314 | unsigned i; |
315 | ||
316 | call = gimple_build_call_internal_1 (fn, nargs); | |
317 | va_start (ap, nargs); | |
318 | for (i = 0; i < nargs; i++) | |
319 | gimple_call_set_arg (call, i, va_arg (ap, tree)); | |
320 | va_end (ap); | |
321 | ||
322 | return call; | |
323 | } | |
324 | ||
325 | ||
326 | /* Build a GIMPLE_CALL statement to internal function FN with the arguments | |
327 | specified in vector ARGS. */ | |
328 | ||
538dd0b7 | 329 | gcall * |
9771b263 | 330 | gimple_build_call_internal_vec (enum internal_fn fn, vec<tree> args) |
25583c4f RS |
331 | { |
332 | unsigned i, nargs; | |
538dd0b7 | 333 | gcall *call; |
25583c4f | 334 | |
9771b263 | 335 | nargs = args.length (); |
25583c4f RS |
336 | call = gimple_build_call_internal_1 (fn, nargs); |
337 | for (i = 0; i < nargs; i++) | |
9771b263 | 338 | gimple_call_set_arg (call, i, args[i]); |
25583c4f RS |
339 | |
340 | return call; | |
341 | } | |
342 | ||
343 | ||
726a989a RB |
344 | /* Build a GIMPLE_CALL statement from CALL_EXPR T. Note that T is |
345 | assumed to be in GIMPLE form already. Minimal checking is done of | |
346 | this fact. */ | |
347 | ||
538dd0b7 | 348 | gcall * |
5c5f0b65 | 349 | gimple_build_call_from_tree (tree t, tree fnptrtype) |
726a989a RB |
350 | { |
351 | unsigned i, nargs; | |
538dd0b7 | 352 | gcall *call; |
726a989a RB |
353 | tree fndecl = get_callee_fndecl (t); |
354 | ||
355 | gcc_assert (TREE_CODE (t) == CALL_EXPR); | |
356 | ||
357 | nargs = call_expr_nargs (t); | |
358 | call = gimple_build_call_1 (fndecl ? fndecl : CALL_EXPR_FN (t), nargs); | |
359 | ||
360 | for (i = 0; i < nargs; i++) | |
361 | gimple_call_set_arg (call, i, CALL_EXPR_ARG (t, i)); | |
362 | ||
363 | gimple_set_block (call, TREE_BLOCK (t)); | |
364 | ||
365 | /* Carry all the CALL_EXPR flags to the new GIMPLE_CALL. */ | |
366 | gimple_call_set_chain (call, CALL_EXPR_STATIC_CHAIN (t)); | |
367 | gimple_call_set_tail (call, CALL_EXPR_TAILCALL (t)); | |
9a385c2d | 368 | gimple_call_set_must_tail (call, CALL_EXPR_MUST_TAIL_CALL (t)); |
726a989a | 369 | gimple_call_set_return_slot_opt (call, CALL_EXPR_RETURN_SLOT_OPT (t)); |
63d2a353 MM |
370 | if (fndecl |
371 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
9e878cf1 | 372 | && ALLOCA_FUNCTION_CODE_P (DECL_FUNCTION_CODE (fndecl))) |
63d2a353 MM |
373 | gimple_call_set_alloca_for_var (call, CALL_ALLOCA_FOR_VAR_P (t)); |
374 | else | |
375 | gimple_call_set_from_thunk (call, CALL_FROM_THUNK_P (t)); | |
726a989a | 376 | gimple_call_set_va_arg_pack (call, CALL_EXPR_VA_ARG_PACK (t)); |
9bb1a81b | 377 | gimple_call_set_nothrow (call, TREE_NOTHROW (t)); |
4c640e26 | 378 | gimple_call_set_by_descriptor (call, CALL_EXPR_BY_DESCRIPTOR (t)); |
d665b6e5 | 379 | gimple_set_no_warning (call, TREE_NO_WARNING (t)); |
d5e254e1 | 380 | gimple_call_set_with_bounds (call, CALL_WITH_BOUNDS_P (t)); |
726a989a | 381 | |
5c5f0b65 IT |
382 | if (fnptrtype) |
383 | { | |
384 | gimple_call_set_fntype (call, TREE_TYPE (fnptrtype)); | |
385 | ||
386 | /* Check if it's an indirect CALL and the type has the | |
387 | nocf_check attribute. In that case propagate the information | |
388 | to the gimple CALL insn. */ | |
389 | if (!fndecl) | |
390 | { | |
391 | gcc_assert (POINTER_TYPE_P (fnptrtype)); | |
392 | tree fntype = TREE_TYPE (fnptrtype); | |
393 | ||
394 | if (lookup_attribute ("nocf_check", TYPE_ATTRIBUTES (fntype))) | |
395 | gimple_call_set_nocf_check (call, TRUE); | |
396 | } | |
397 | } | |
398 | ||
726a989a RB |
399 | return call; |
400 | } | |
401 | ||
402 | ||
726a989a RB |
403 | /* Build a GIMPLE_ASSIGN statement. |
404 | ||
405 | LHS of the assignment. | |
406 | RHS of the assignment which can be unary or binary. */ | |
407 | ||
538dd0b7 | 408 | gassign * |
0d0e4a03 | 409 | gimple_build_assign (tree lhs, tree rhs MEM_STAT_DECL) |
726a989a RB |
410 | { |
411 | enum tree_code subcode; | |
0354c0c7 | 412 | tree op1, op2, op3; |
726a989a | 413 | |
d1e2bb2d | 414 | extract_ops_from_tree (rhs, &subcode, &op1, &op2, &op3); |
0d0e4a03 | 415 | return gimple_build_assign (lhs, subcode, op1, op2, op3 PASS_MEM_STAT); |
726a989a RB |
416 | } |
417 | ||
418 | ||
7d05cebb | 419 | /* Build a GIMPLE_ASSIGN statement with subcode SUBCODE and operands |
0d0e4a03 | 420 | OP1, OP2 and OP3. */ |
726a989a | 421 | |
0d0e4a03 JJ |
422 | static inline gassign * |
423 | gimple_build_assign_1 (tree lhs, enum tree_code subcode, tree op1, | |
424 | tree op2, tree op3 MEM_STAT_DECL) | |
726a989a RB |
425 | { |
426 | unsigned num_ops; | |
538dd0b7 | 427 | gassign *p; |
726a989a RB |
428 | |
429 | /* Need 1 operand for LHS and 1 or 2 for the RHS (depending on the | |
430 | code). */ | |
431 | num_ops = get_gimple_rhs_num_ops (subcode) + 1; | |
b8698a0f | 432 | |
538dd0b7 DM |
433 | p = as_a <gassign *> ( |
434 | gimple_build_with_ops_stat (GIMPLE_ASSIGN, (unsigned)subcode, num_ops | |
435 | PASS_MEM_STAT)); | |
726a989a RB |
436 | gimple_assign_set_lhs (p, lhs); |
437 | gimple_assign_set_rhs1 (p, op1); | |
438 | if (op2) | |
439 | { | |
440 | gcc_assert (num_ops > 2); | |
441 | gimple_assign_set_rhs2 (p, op2); | |
442 | } | |
443 | ||
0354c0c7 BS |
444 | if (op3) |
445 | { | |
446 | gcc_assert (num_ops > 3); | |
447 | gimple_assign_set_rhs3 (p, op3); | |
448 | } | |
449 | ||
726a989a RB |
450 | return p; |
451 | } | |
452 | ||
0d0e4a03 JJ |
453 | /* Build a GIMPLE_ASSIGN statement with subcode SUBCODE and operands |
454 | OP1, OP2 and OP3. */ | |
455 | ||
456 | gassign * | |
457 | gimple_build_assign (tree lhs, enum tree_code subcode, tree op1, | |
458 | tree op2, tree op3 MEM_STAT_DECL) | |
459 | { | |
460 | return gimple_build_assign_1 (lhs, subcode, op1, op2, op3 PASS_MEM_STAT); | |
461 | } | |
462 | ||
463 | /* Build a GIMPLE_ASSIGN statement with subcode SUBCODE and operands | |
464 | OP1 and OP2. */ | |
465 | ||
538dd0b7 | 466 | gassign * |
0d0e4a03 JJ |
467 | gimple_build_assign (tree lhs, enum tree_code subcode, tree op1, |
468 | tree op2 MEM_STAT_DECL) | |
73804b12 | 469 | { |
0d0e4a03 JJ |
470 | return gimple_build_assign_1 (lhs, subcode, op1, op2, NULL_TREE |
471 | PASS_MEM_STAT); | |
73804b12 RG |
472 | } |
473 | ||
0d0e4a03 JJ |
474 | /* Build a GIMPLE_ASSIGN statement with subcode SUBCODE and operand OP1. */ |
475 | ||
538dd0b7 | 476 | gassign * |
0d0e4a03 | 477 | gimple_build_assign (tree lhs, enum tree_code subcode, tree op1 MEM_STAT_DECL) |
00d66391 | 478 | { |
0d0e4a03 JJ |
479 | return gimple_build_assign_1 (lhs, subcode, op1, NULL_TREE, NULL_TREE |
480 | PASS_MEM_STAT); | |
00d66391 JJ |
481 | } |
482 | ||
726a989a | 483 | |
726a989a RB |
484 | /* Build a GIMPLE_COND statement. |
485 | ||
486 | PRED is the condition used to compare LHS and the RHS. | |
487 | T_LABEL is the label to jump to if the condition is true. | |
488 | F_LABEL is the label to jump to otherwise. */ | |
489 | ||
538dd0b7 | 490 | gcond * |
726a989a RB |
491 | gimple_build_cond (enum tree_code pred_code, tree lhs, tree rhs, |
492 | tree t_label, tree f_label) | |
493 | { | |
538dd0b7 | 494 | gcond *p; |
726a989a RB |
495 | |
496 | gcc_assert (TREE_CODE_CLASS (pred_code) == tcc_comparison); | |
538dd0b7 | 497 | p = as_a <gcond *> (gimple_build_with_ops (GIMPLE_COND, pred_code, 4)); |
726a989a RB |
498 | gimple_cond_set_lhs (p, lhs); |
499 | gimple_cond_set_rhs (p, rhs); | |
500 | gimple_cond_set_true_label (p, t_label); | |
501 | gimple_cond_set_false_label (p, f_label); | |
502 | return p; | |
503 | } | |
504 | ||
726a989a RB |
505 | /* Build a GIMPLE_COND statement from the conditional expression tree |
506 | COND. T_LABEL and F_LABEL are as in gimple_build_cond. */ | |
507 | ||
538dd0b7 | 508 | gcond * |
726a989a RB |
509 | gimple_build_cond_from_tree (tree cond, tree t_label, tree f_label) |
510 | { | |
511 | enum tree_code code; | |
512 | tree lhs, rhs; | |
513 | ||
514 | gimple_cond_get_ops_from_tree (cond, &code, &lhs, &rhs); | |
515 | return gimple_build_cond (code, lhs, rhs, t_label, f_label); | |
516 | } | |
517 | ||
518 | /* Set code, lhs, and rhs of a GIMPLE_COND from a suitable | |
519 | boolean expression tree COND. */ | |
520 | ||
521 | void | |
538dd0b7 | 522 | gimple_cond_set_condition_from_tree (gcond *stmt, tree cond) |
726a989a RB |
523 | { |
524 | enum tree_code code; | |
525 | tree lhs, rhs; | |
526 | ||
527 | gimple_cond_get_ops_from_tree (cond, &code, &lhs, &rhs); | |
528 | gimple_cond_set_condition (stmt, code, lhs, rhs); | |
529 | } | |
530 | ||
531 | /* Build a GIMPLE_LABEL statement for LABEL. */ | |
532 | ||
538dd0b7 | 533 | glabel * |
726a989a RB |
534 | gimple_build_label (tree label) |
535 | { | |
538dd0b7 DM |
536 | glabel *p |
537 | = as_a <glabel *> (gimple_build_with_ops (GIMPLE_LABEL, ERROR_MARK, 1)); | |
726a989a RB |
538 | gimple_label_set_label (p, label); |
539 | return p; | |
540 | } | |
541 | ||
542 | /* Build a GIMPLE_GOTO statement to label DEST. */ | |
543 | ||
538dd0b7 | 544 | ggoto * |
726a989a RB |
545 | gimple_build_goto (tree dest) |
546 | { | |
538dd0b7 DM |
547 | ggoto *p |
548 | = as_a <ggoto *> (gimple_build_with_ops (GIMPLE_GOTO, ERROR_MARK, 1)); | |
726a989a RB |
549 | gimple_goto_set_dest (p, dest); |
550 | return p; | |
551 | } | |
552 | ||
553 | ||
554 | /* Build a GIMPLE_NOP statement. */ | |
555 | ||
355fe088 | 556 | gimple * |
726a989a RB |
557 | gimple_build_nop (void) |
558 | { | |
559 | return gimple_alloc (GIMPLE_NOP, 0); | |
560 | } | |
561 | ||
562 | ||
563 | /* Build a GIMPLE_BIND statement. | |
564 | VARS are the variables in BODY. | |
565 | BLOCK is the containing block. */ | |
566 | ||
538dd0b7 | 567 | gbind * |
726a989a RB |
568 | gimple_build_bind (tree vars, gimple_seq body, tree block) |
569 | { | |
538dd0b7 | 570 | gbind *p = as_a <gbind *> (gimple_alloc (GIMPLE_BIND, 0)); |
726a989a RB |
571 | gimple_bind_set_vars (p, vars); |
572 | if (body) | |
573 | gimple_bind_set_body (p, body); | |
574 | if (block) | |
575 | gimple_bind_set_block (p, block); | |
576 | return p; | |
577 | } | |
578 | ||
579 | /* Helper function to set the simple fields of a asm stmt. | |
580 | ||
581 | STRING is a pointer to a string that is the asm blocks assembly code. | |
582 | NINPUT is the number of register inputs. | |
583 | NOUTPUT is the number of register outputs. | |
584 | NCLOBBERS is the number of clobbered registers. | |
585 | */ | |
586 | ||
538dd0b7 | 587 | static inline gasm * |
b8698a0f | 588 | gimple_build_asm_1 (const char *string, unsigned ninputs, unsigned noutputs, |
1c384bf1 | 589 | unsigned nclobbers, unsigned nlabels) |
726a989a | 590 | { |
538dd0b7 | 591 | gasm *p; |
726a989a RB |
592 | int size = strlen (string); |
593 | ||
1c384bf1 RH |
594 | /* ASMs with labels cannot have outputs. This should have been |
595 | enforced by the front end. */ | |
596 | gcc_assert (nlabels == 0 || noutputs == 0); | |
597 | ||
538dd0b7 | 598 | p = as_a <gasm *> ( |
daa6e488 DM |
599 | gimple_build_with_ops (GIMPLE_ASM, ERROR_MARK, |
600 | ninputs + noutputs + nclobbers + nlabels)); | |
726a989a | 601 | |
daa6e488 DM |
602 | p->ni = ninputs; |
603 | p->no = noutputs; | |
604 | p->nc = nclobbers; | |
605 | p->nl = nlabels; | |
606 | p->string = ggc_alloc_string (string, size); | |
726a989a | 607 | |
7aa6d18a SB |
608 | if (GATHER_STATISTICS) |
609 | gimple_alloc_sizes[(int) gimple_alloc_kind (GIMPLE_ASM)] += size; | |
b8698a0f | 610 | |
726a989a RB |
611 | return p; |
612 | } | |
613 | ||
614 | /* Build a GIMPLE_ASM statement. | |
615 | ||
616 | STRING is the assembly code. | |
617 | NINPUT is the number of register inputs. | |
618 | NOUTPUT is the number of register outputs. | |
619 | NCLOBBERS is the number of clobbered registers. | |
620 | INPUTS is a vector of the input register parameters. | |
621 | OUTPUTS is a vector of the output register parameters. | |
1c384bf1 RH |
622 | CLOBBERS is a vector of the clobbered register parameters. |
623 | LABELS is a vector of destination labels. */ | |
726a989a | 624 | |
538dd0b7 | 625 | gasm * |
9771b263 DN |
626 | gimple_build_asm_vec (const char *string, vec<tree, va_gc> *inputs, |
627 | vec<tree, va_gc> *outputs, vec<tree, va_gc> *clobbers, | |
628 | vec<tree, va_gc> *labels) | |
726a989a | 629 | { |
538dd0b7 | 630 | gasm *p; |
726a989a RB |
631 | unsigned i; |
632 | ||
633 | p = gimple_build_asm_1 (string, | |
9771b263 DN |
634 | vec_safe_length (inputs), |
635 | vec_safe_length (outputs), | |
636 | vec_safe_length (clobbers), | |
637 | vec_safe_length (labels)); | |
b8698a0f | 638 | |
9771b263 DN |
639 | for (i = 0; i < vec_safe_length (inputs); i++) |
640 | gimple_asm_set_input_op (p, i, (*inputs)[i]); | |
726a989a | 641 | |
9771b263 DN |
642 | for (i = 0; i < vec_safe_length (outputs); i++) |
643 | gimple_asm_set_output_op (p, i, (*outputs)[i]); | |
726a989a | 644 | |
9771b263 DN |
645 | for (i = 0; i < vec_safe_length (clobbers); i++) |
646 | gimple_asm_set_clobber_op (p, i, (*clobbers)[i]); | |
b8698a0f | 647 | |
9771b263 DN |
648 | for (i = 0; i < vec_safe_length (labels); i++) |
649 | gimple_asm_set_label_op (p, i, (*labels)[i]); | |
b8698a0f | 650 | |
726a989a RB |
651 | return p; |
652 | } | |
653 | ||
654 | /* Build a GIMPLE_CATCH statement. | |
655 | ||
656 | TYPES are the catch types. | |
657 | HANDLER is the exception handler. */ | |
658 | ||
538dd0b7 | 659 | gcatch * |
726a989a RB |
660 | gimple_build_catch (tree types, gimple_seq handler) |
661 | { | |
538dd0b7 | 662 | gcatch *p = as_a <gcatch *> (gimple_alloc (GIMPLE_CATCH, 0)); |
726a989a RB |
663 | gimple_catch_set_types (p, types); |
664 | if (handler) | |
665 | gimple_catch_set_handler (p, handler); | |
666 | ||
667 | return p; | |
668 | } | |
669 | ||
670 | /* Build a GIMPLE_EH_FILTER statement. | |
671 | ||
672 | TYPES are the filter's types. | |
673 | FAILURE is the filter's failure action. */ | |
674 | ||
538dd0b7 | 675 | geh_filter * |
726a989a RB |
676 | gimple_build_eh_filter (tree types, gimple_seq failure) |
677 | { | |
538dd0b7 | 678 | geh_filter *p = as_a <geh_filter *> (gimple_alloc (GIMPLE_EH_FILTER, 0)); |
726a989a RB |
679 | gimple_eh_filter_set_types (p, types); |
680 | if (failure) | |
681 | gimple_eh_filter_set_failure (p, failure); | |
682 | ||
683 | return p; | |
684 | } | |
685 | ||
1d65f45c RH |
686 | /* Build a GIMPLE_EH_MUST_NOT_THROW statement. */ |
687 | ||
538dd0b7 | 688 | geh_mnt * |
1d65f45c RH |
689 | gimple_build_eh_must_not_throw (tree decl) |
690 | { | |
538dd0b7 | 691 | geh_mnt *p = as_a <geh_mnt *> (gimple_alloc (GIMPLE_EH_MUST_NOT_THROW, 0)); |
1d65f45c RH |
692 | |
693 | gcc_assert (TREE_CODE (decl) == FUNCTION_DECL); | |
694 | gcc_assert (flags_from_decl_or_type (decl) & ECF_NORETURN); | |
d7f09764 | 695 | gimple_eh_must_not_throw_set_fndecl (p, decl); |
1d65f45c RH |
696 | |
697 | return p; | |
698 | } | |
699 | ||
0a35513e AH |
700 | /* Build a GIMPLE_EH_ELSE statement. */ |
701 | ||
538dd0b7 | 702 | geh_else * |
0a35513e AH |
703 | gimple_build_eh_else (gimple_seq n_body, gimple_seq e_body) |
704 | { | |
538dd0b7 | 705 | geh_else *p = as_a <geh_else *> (gimple_alloc (GIMPLE_EH_ELSE, 0)); |
0a35513e AH |
706 | gimple_eh_else_set_n_body (p, n_body); |
707 | gimple_eh_else_set_e_body (p, e_body); | |
708 | return p; | |
709 | } | |
710 | ||
726a989a RB |
711 | /* Build a GIMPLE_TRY statement. |
712 | ||
713 | EVAL is the expression to evaluate. | |
714 | CLEANUP is the cleanup expression. | |
715 | KIND is either GIMPLE_TRY_CATCH or GIMPLE_TRY_FINALLY depending on | |
716 | whether this is a try/catch or a try/finally respectively. */ | |
717 | ||
538dd0b7 | 718 | gtry * |
726a989a RB |
719 | gimple_build_try (gimple_seq eval, gimple_seq cleanup, |
720 | enum gimple_try_flags kind) | |
721 | { | |
538dd0b7 | 722 | gtry *p; |
726a989a RB |
723 | |
724 | gcc_assert (kind == GIMPLE_TRY_CATCH || kind == GIMPLE_TRY_FINALLY); | |
538dd0b7 | 725 | p = as_a <gtry *> (gimple_alloc (GIMPLE_TRY, 0)); |
726a989a RB |
726 | gimple_set_subcode (p, kind); |
727 | if (eval) | |
728 | gimple_try_set_eval (p, eval); | |
729 | if (cleanup) | |
730 | gimple_try_set_cleanup (p, cleanup); | |
731 | ||
732 | return p; | |
733 | } | |
734 | ||
735 | /* Construct a GIMPLE_WITH_CLEANUP_EXPR statement. | |
736 | ||
737 | CLEANUP is the cleanup expression. */ | |
738 | ||
355fe088 | 739 | gimple * |
726a989a RB |
740 | gimple_build_wce (gimple_seq cleanup) |
741 | { | |
355fe088 | 742 | gimple *p = gimple_alloc (GIMPLE_WITH_CLEANUP_EXPR, 0); |
726a989a RB |
743 | if (cleanup) |
744 | gimple_wce_set_cleanup (p, cleanup); | |
745 | ||
746 | return p; | |
747 | } | |
748 | ||
749 | ||
1d65f45c | 750 | /* Build a GIMPLE_RESX statement. */ |
726a989a | 751 | |
538dd0b7 | 752 | gresx * |
726a989a RB |
753 | gimple_build_resx (int region) |
754 | { | |
538dd0b7 DM |
755 | gresx *p |
756 | = as_a <gresx *> (gimple_build_with_ops (GIMPLE_RESX, ERROR_MARK, 0)); | |
daa6e488 | 757 | p->region = region; |
726a989a RB |
758 | return p; |
759 | } | |
760 | ||
761 | ||
762 | /* The helper for constructing a gimple switch statement. | |
763 | INDEX is the switch's index. | |
764 | NLABELS is the number of labels in the switch excluding the default. | |
765 | DEFAULT_LABEL is the default label for the switch statement. */ | |
766 | ||
538dd0b7 | 767 | gswitch * |
1d65f45c | 768 | gimple_build_switch_nlabels (unsigned nlabels, tree index, tree default_label) |
726a989a RB |
769 | { |
770 | /* nlabels + 1 default label + 1 index. */ | |
fd8d363e | 771 | gcc_checking_assert (default_label); |
538dd0b7 DM |
772 | gswitch *p = as_a <gswitch *> (gimple_build_with_ops (GIMPLE_SWITCH, |
773 | ERROR_MARK, | |
774 | 1 + 1 + nlabels)); | |
726a989a | 775 | gimple_switch_set_index (p, index); |
fd8d363e | 776 | gimple_switch_set_default_label (p, default_label); |
726a989a RB |
777 | return p; |
778 | } | |
779 | ||
726a989a RB |
780 | /* Build a GIMPLE_SWITCH statement. |
781 | ||
782 | INDEX is the switch's index. | |
783 | DEFAULT_LABEL is the default label | |
784 | ARGS is a vector of labels excluding the default. */ | |
785 | ||
538dd0b7 | 786 | gswitch * |
9771b263 | 787 | gimple_build_switch (tree index, tree default_label, vec<tree> args) |
726a989a | 788 | { |
9771b263 | 789 | unsigned i, nlabels = args.length (); |
fd8d363e | 790 | |
538dd0b7 | 791 | gswitch *p = gimple_build_switch_nlabels (nlabels, index, default_label); |
726a989a | 792 | |
1d65f45c | 793 | /* Copy the labels from the vector to the switch statement. */ |
1d65f45c | 794 | for (i = 0; i < nlabels; i++) |
9771b263 | 795 | gimple_switch_set_label (p, i + 1, args[i]); |
726a989a RB |
796 | |
797 | return p; | |
798 | } | |
799 | ||
1d65f45c RH |
800 | /* Build a GIMPLE_EH_DISPATCH statement. */ |
801 | ||
538dd0b7 | 802 | geh_dispatch * |
1d65f45c RH |
803 | gimple_build_eh_dispatch (int region) |
804 | { | |
538dd0b7 DM |
805 | geh_dispatch *p |
806 | = as_a <geh_dispatch *> ( | |
807 | gimple_build_with_ops (GIMPLE_EH_DISPATCH, ERROR_MARK, 0)); | |
daa6e488 | 808 | p->region = region; |
1d65f45c RH |
809 | return p; |
810 | } | |
726a989a | 811 | |
b5b8b0ac AO |
812 | /* Build a new GIMPLE_DEBUG_BIND statement. |
813 | ||
814 | VAR is bound to VALUE; block and location are taken from STMT. */ | |
815 | ||
538dd0b7 | 816 | gdebug * |
59cdeebc | 817 | gimple_build_debug_bind (tree var, tree value, gimple *stmt MEM_STAT_DECL) |
b5b8b0ac | 818 | { |
538dd0b7 DM |
819 | gdebug *p |
820 | = as_a <gdebug *> (gimple_build_with_ops_stat (GIMPLE_DEBUG, | |
821 | (unsigned)GIMPLE_DEBUG_BIND, 2 | |
822 | PASS_MEM_STAT)); | |
b5b8b0ac AO |
823 | gimple_debug_bind_set_var (p, var); |
824 | gimple_debug_bind_set_value (p, value); | |
825 | if (stmt) | |
5368224f | 826 | gimple_set_location (p, gimple_location (stmt)); |
b5b8b0ac AO |
827 | |
828 | return p; | |
829 | } | |
830 | ||
831 | ||
ddb555ed JJ |
832 | /* Build a new GIMPLE_DEBUG_SOURCE_BIND statement. |
833 | ||
834 | VAR is bound to VALUE; block and location are taken from STMT. */ | |
835 | ||
538dd0b7 | 836 | gdebug * |
59cdeebc | 837 | gimple_build_debug_source_bind (tree var, tree value, |
355fe088 | 838 | gimple *stmt MEM_STAT_DECL) |
ddb555ed | 839 | { |
538dd0b7 DM |
840 | gdebug *p |
841 | = as_a <gdebug *> ( | |
842 | gimple_build_with_ops_stat (GIMPLE_DEBUG, | |
843 | (unsigned)GIMPLE_DEBUG_SOURCE_BIND, 2 | |
844 | PASS_MEM_STAT)); | |
ddb555ed JJ |
845 | |
846 | gimple_debug_source_bind_set_var (p, var); | |
847 | gimple_debug_source_bind_set_value (p, value); | |
848 | if (stmt) | |
5368224f | 849 | gimple_set_location (p, gimple_location (stmt)); |
ddb555ed JJ |
850 | |
851 | return p; | |
852 | } | |
853 | ||
854 | ||
726a989a RB |
855 | /* Build a GIMPLE_OMP_CRITICAL statement. |
856 | ||
857 | BODY is the sequence of statements for which only one thread can execute. | |
d9a6bd32 JJ |
858 | NAME is optional identifier for this critical block. |
859 | CLAUSES are clauses for this critical block. */ | |
726a989a | 860 | |
538dd0b7 | 861 | gomp_critical * |
d9a6bd32 | 862 | gimple_build_omp_critical (gimple_seq body, tree name, tree clauses) |
726a989a | 863 | { |
538dd0b7 DM |
864 | gomp_critical *p |
865 | = as_a <gomp_critical *> (gimple_alloc (GIMPLE_OMP_CRITICAL, 0)); | |
726a989a | 866 | gimple_omp_critical_set_name (p, name); |
d9a6bd32 | 867 | gimple_omp_critical_set_clauses (p, clauses); |
726a989a RB |
868 | if (body) |
869 | gimple_omp_set_body (p, body); | |
870 | ||
871 | return p; | |
872 | } | |
873 | ||
874 | /* Build a GIMPLE_OMP_FOR statement. | |
875 | ||
876 | BODY is sequence of statements inside the for loop. | |
74bf76ed | 877 | KIND is the `for' variant. |
41dbbb37 | 878 | CLAUSES, are any of the construct's clauses. |
726a989a RB |
879 | COLLAPSE is the collapse count. |
880 | PRE_BODY is the sequence of statements that are loop invariant. */ | |
881 | ||
538dd0b7 | 882 | gomp_for * |
74bf76ed | 883 | gimple_build_omp_for (gimple_seq body, int kind, tree clauses, size_t collapse, |
726a989a RB |
884 | gimple_seq pre_body) |
885 | { | |
538dd0b7 | 886 | gomp_for *p = as_a <gomp_for *> (gimple_alloc (GIMPLE_OMP_FOR, 0)); |
726a989a RB |
887 | if (body) |
888 | gimple_omp_set_body (p, body); | |
889 | gimple_omp_for_set_clauses (p, clauses); | |
74bf76ed | 890 | gimple_omp_for_set_kind (p, kind); |
daa6e488 | 891 | p->collapse = collapse; |
766090c2 | 892 | p->iter = ggc_cleared_vec_alloc<gimple_omp_for_iter> (collapse); |
daa6e488 | 893 | |
726a989a RB |
894 | if (pre_body) |
895 | gimple_omp_for_set_pre_body (p, pre_body); | |
896 | ||
897 | return p; | |
898 | } | |
899 | ||
900 | ||
901 | /* Build a GIMPLE_OMP_PARALLEL statement. | |
902 | ||
903 | BODY is sequence of statements which are executed in parallel. | |
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 | ||
538dd0b7 | 908 | gomp_parallel * |
b8698a0f | 909 | gimple_build_omp_parallel (gimple_seq body, tree clauses, tree child_fn, |
726a989a RB |
910 | tree data_arg) |
911 | { | |
538dd0b7 DM |
912 | gomp_parallel *p |
913 | = as_a <gomp_parallel *> (gimple_alloc (GIMPLE_OMP_PARALLEL, 0)); | |
726a989a RB |
914 | if (body) |
915 | gimple_omp_set_body (p, body); | |
916 | gimple_omp_parallel_set_clauses (p, clauses); | |
917 | gimple_omp_parallel_set_child_fn (p, child_fn); | |
918 | gimple_omp_parallel_set_data_arg (p, data_arg); | |
919 | ||
920 | return p; | |
921 | } | |
922 | ||
923 | ||
924 | /* Build a GIMPLE_OMP_TASK statement. | |
925 | ||
926 | BODY is sequence of statements which are executed by the explicit task. | |
927 | CLAUSES, are the OMP parallel construct's clauses. | |
928 | CHILD_FN is the function created for the parallel threads to execute. | |
929 | DATA_ARG are the shared data argument(s). | |
930 | COPY_FN is the optional function for firstprivate initialization. | |
931 | ARG_SIZE and ARG_ALIGN are size and alignment of the data block. */ | |
932 | ||
538dd0b7 | 933 | gomp_task * |
726a989a RB |
934 | gimple_build_omp_task (gimple_seq body, tree clauses, tree child_fn, |
935 | tree data_arg, tree copy_fn, tree arg_size, | |
936 | tree arg_align) | |
937 | { | |
538dd0b7 | 938 | gomp_task *p = as_a <gomp_task *> (gimple_alloc (GIMPLE_OMP_TASK, 0)); |
726a989a RB |
939 | if (body) |
940 | gimple_omp_set_body (p, body); | |
941 | gimple_omp_task_set_clauses (p, clauses); | |
942 | gimple_omp_task_set_child_fn (p, child_fn); | |
943 | gimple_omp_task_set_data_arg (p, data_arg); | |
944 | gimple_omp_task_set_copy_fn (p, copy_fn); | |
945 | gimple_omp_task_set_arg_size (p, arg_size); | |
946 | gimple_omp_task_set_arg_align (p, arg_align); | |
947 | ||
948 | return p; | |
949 | } | |
950 | ||
951 | ||
952 | /* Build a GIMPLE_OMP_SECTION statement for a sections statement. | |
953 | ||
954 | BODY is the sequence of statements in the section. */ | |
955 | ||
355fe088 | 956 | gimple * |
726a989a RB |
957 | gimple_build_omp_section (gimple_seq body) |
958 | { | |
355fe088 | 959 | gimple *p = gimple_alloc (GIMPLE_OMP_SECTION, 0); |
726a989a RB |
960 | if (body) |
961 | gimple_omp_set_body (p, body); | |
962 | ||
963 | return p; | |
964 | } | |
965 | ||
966 | ||
967 | /* Build a GIMPLE_OMP_MASTER statement. | |
968 | ||
969 | BODY is the sequence of statements to be executed by just the master. */ | |
970 | ||
355fe088 | 971 | gimple * |
726a989a RB |
972 | gimple_build_omp_master (gimple_seq body) |
973 | { | |
355fe088 | 974 | gimple *p = gimple_alloc (GIMPLE_OMP_MASTER, 0); |
726a989a RB |
975 | if (body) |
976 | gimple_omp_set_body (p, body); | |
977 | ||
978 | return p; | |
979 | } | |
980 | ||
b2b40051 MJ |
981 | /* Build a GIMPLE_OMP_GRID_BODY statement. |
982 | ||
983 | BODY is the sequence of statements to be executed by the kernel. */ | |
984 | ||
985 | gimple * | |
986 | gimple_build_omp_grid_body (gimple_seq body) | |
987 | { | |
988 | gimple *p = gimple_alloc (GIMPLE_OMP_GRID_BODY, 0); | |
989 | if (body) | |
990 | gimple_omp_set_body (p, body); | |
991 | ||
992 | return p; | |
993 | } | |
726a989a | 994 | |
acf0174b JJ |
995 | /* Build a GIMPLE_OMP_TASKGROUP statement. |
996 | ||
997 | BODY is the sequence of statements to be executed by the taskgroup | |
998 | construct. */ | |
999 | ||
355fe088 | 1000 | gimple * |
acf0174b JJ |
1001 | gimple_build_omp_taskgroup (gimple_seq body) |
1002 | { | |
355fe088 | 1003 | gimple *p = gimple_alloc (GIMPLE_OMP_TASKGROUP, 0); |
acf0174b JJ |
1004 | if (body) |
1005 | gimple_omp_set_body (p, body); | |
1006 | ||
1007 | return p; | |
1008 | } | |
1009 | ||
1010 | ||
726a989a RB |
1011 | /* Build a GIMPLE_OMP_CONTINUE statement. |
1012 | ||
1013 | CONTROL_DEF is the definition of the control variable. | |
1014 | CONTROL_USE is the use of the control variable. */ | |
1015 | ||
538dd0b7 | 1016 | gomp_continue * |
726a989a RB |
1017 | gimple_build_omp_continue (tree control_def, tree control_use) |
1018 | { | |
538dd0b7 DM |
1019 | gomp_continue *p |
1020 | = as_a <gomp_continue *> (gimple_alloc (GIMPLE_OMP_CONTINUE, 0)); | |
726a989a RB |
1021 | gimple_omp_continue_set_control_def (p, control_def); |
1022 | gimple_omp_continue_set_control_use (p, control_use); | |
1023 | return p; | |
1024 | } | |
1025 | ||
1026 | /* Build a GIMPLE_OMP_ORDERED statement. | |
1027 | ||
1028 | BODY is the sequence of statements inside a loop that will executed in | |
d9a6bd32 JJ |
1029 | sequence. |
1030 | CLAUSES are clauses for this statement. */ | |
726a989a | 1031 | |
d9a6bd32 JJ |
1032 | gomp_ordered * |
1033 | gimple_build_omp_ordered (gimple_seq body, tree clauses) | |
726a989a | 1034 | { |
d9a6bd32 JJ |
1035 | gomp_ordered *p |
1036 | = as_a <gomp_ordered *> (gimple_alloc (GIMPLE_OMP_ORDERED, 0)); | |
1037 | gimple_omp_ordered_set_clauses (p, clauses); | |
726a989a RB |
1038 | if (body) |
1039 | gimple_omp_set_body (p, body); | |
1040 | ||
1041 | return p; | |
1042 | } | |
1043 | ||
1044 | ||
1045 | /* Build a GIMPLE_OMP_RETURN statement. | |
1046 | WAIT_P is true if this is a non-waiting return. */ | |
1047 | ||
355fe088 | 1048 | gimple * |
726a989a RB |
1049 | gimple_build_omp_return (bool wait_p) |
1050 | { | |
355fe088 | 1051 | gimple *p = gimple_alloc (GIMPLE_OMP_RETURN, 0); |
726a989a RB |
1052 | if (wait_p) |
1053 | gimple_omp_return_set_nowait (p); | |
1054 | ||
1055 | return p; | |
1056 | } | |
1057 | ||
1058 | ||
1059 | /* Build a GIMPLE_OMP_SECTIONS statement. | |
1060 | ||
1061 | BODY is a sequence of section statements. | |
1062 | CLAUSES are any of the OMP sections contsruct's clauses: private, | |
1063 | firstprivate, lastprivate, reduction, and nowait. */ | |
1064 | ||
538dd0b7 | 1065 | gomp_sections * |
726a989a RB |
1066 | gimple_build_omp_sections (gimple_seq body, tree clauses) |
1067 | { | |
538dd0b7 DM |
1068 | gomp_sections *p |
1069 | = as_a <gomp_sections *> (gimple_alloc (GIMPLE_OMP_SECTIONS, 0)); | |
726a989a RB |
1070 | if (body) |
1071 | gimple_omp_set_body (p, body); | |
1072 | gimple_omp_sections_set_clauses (p, clauses); | |
1073 | ||
1074 | return p; | |
1075 | } | |
1076 | ||
1077 | ||
1078 | /* Build a GIMPLE_OMP_SECTIONS_SWITCH. */ | |
1079 | ||
355fe088 | 1080 | gimple * |
726a989a RB |
1081 | gimple_build_omp_sections_switch (void) |
1082 | { | |
1083 | return gimple_alloc (GIMPLE_OMP_SECTIONS_SWITCH, 0); | |
1084 | } | |
1085 | ||
1086 | ||
1087 | /* Build a GIMPLE_OMP_SINGLE statement. | |
1088 | ||
1089 | BODY is the sequence of statements that will be executed once. | |
1090 | CLAUSES are any of the OMP single construct's clauses: private, firstprivate, | |
1091 | copyprivate, nowait. */ | |
1092 | ||
538dd0b7 | 1093 | gomp_single * |
726a989a RB |
1094 | gimple_build_omp_single (gimple_seq body, tree clauses) |
1095 | { | |
538dd0b7 DM |
1096 | gomp_single *p |
1097 | = as_a <gomp_single *> (gimple_alloc (GIMPLE_OMP_SINGLE, 0)); | |
726a989a RB |
1098 | if (body) |
1099 | gimple_omp_set_body (p, body); | |
1100 | gimple_omp_single_set_clauses (p, clauses); | |
1101 | ||
1102 | return p; | |
1103 | } | |
1104 | ||
1105 | ||
acf0174b JJ |
1106 | /* Build a GIMPLE_OMP_TARGET statement. |
1107 | ||
1108 | BODY is the sequence of statements that will be executed. | |
41dbbb37 TS |
1109 | KIND is the kind of the region. |
1110 | CLAUSES are any of the construct's clauses. */ | |
acf0174b | 1111 | |
538dd0b7 | 1112 | gomp_target * |
acf0174b JJ |
1113 | gimple_build_omp_target (gimple_seq body, int kind, tree clauses) |
1114 | { | |
538dd0b7 DM |
1115 | gomp_target *p |
1116 | = as_a <gomp_target *> (gimple_alloc (GIMPLE_OMP_TARGET, 0)); | |
acf0174b JJ |
1117 | if (body) |
1118 | gimple_omp_set_body (p, body); | |
1119 | gimple_omp_target_set_clauses (p, clauses); | |
1120 | gimple_omp_target_set_kind (p, kind); | |
1121 | ||
1122 | return p; | |
1123 | } | |
1124 | ||
1125 | ||
1126 | /* Build a GIMPLE_OMP_TEAMS statement. | |
1127 | ||
1128 | BODY is the sequence of statements that will be executed. | |
1129 | CLAUSES are any of the OMP teams construct's clauses. */ | |
1130 | ||
538dd0b7 | 1131 | gomp_teams * |
acf0174b JJ |
1132 | gimple_build_omp_teams (gimple_seq body, tree clauses) |
1133 | { | |
538dd0b7 | 1134 | gomp_teams *p = as_a <gomp_teams *> (gimple_alloc (GIMPLE_OMP_TEAMS, 0)); |
acf0174b JJ |
1135 | if (body) |
1136 | gimple_omp_set_body (p, body); | |
1137 | gimple_omp_teams_set_clauses (p, clauses); | |
1138 | ||
1139 | return p; | |
1140 | } | |
1141 | ||
1142 | ||
726a989a RB |
1143 | /* Build a GIMPLE_OMP_ATOMIC_LOAD statement. */ |
1144 | ||
538dd0b7 | 1145 | gomp_atomic_load * |
726a989a RB |
1146 | gimple_build_omp_atomic_load (tree lhs, tree rhs) |
1147 | { | |
538dd0b7 DM |
1148 | gomp_atomic_load *p |
1149 | = as_a <gomp_atomic_load *> (gimple_alloc (GIMPLE_OMP_ATOMIC_LOAD, 0)); | |
726a989a RB |
1150 | gimple_omp_atomic_load_set_lhs (p, lhs); |
1151 | gimple_omp_atomic_load_set_rhs (p, rhs); | |
1152 | return p; | |
1153 | } | |
1154 | ||
1155 | /* Build a GIMPLE_OMP_ATOMIC_STORE statement. | |
1156 | ||
1157 | VAL is the value we are storing. */ | |
1158 | ||
538dd0b7 | 1159 | gomp_atomic_store * |
726a989a RB |
1160 | gimple_build_omp_atomic_store (tree val) |
1161 | { | |
538dd0b7 DM |
1162 | gomp_atomic_store *p |
1163 | = as_a <gomp_atomic_store *> (gimple_alloc (GIMPLE_OMP_ATOMIC_STORE, 0)); | |
726a989a RB |
1164 | gimple_omp_atomic_store_set_val (p, val); |
1165 | return p; | |
1166 | } | |
1167 | ||
0a35513e AH |
1168 | /* Build a GIMPLE_TRANSACTION statement. */ |
1169 | ||
538dd0b7 | 1170 | gtransaction * |
7c11b0fe | 1171 | gimple_build_transaction (gimple_seq body) |
0a35513e | 1172 | { |
538dd0b7 DM |
1173 | gtransaction *p |
1174 | = as_a <gtransaction *> (gimple_alloc (GIMPLE_TRANSACTION, 0)); | |
0a35513e | 1175 | gimple_transaction_set_body (p, body); |
7c11b0fe RH |
1176 | gimple_transaction_set_label_norm (p, 0); |
1177 | gimple_transaction_set_label_uninst (p, 0); | |
1178 | gimple_transaction_set_label_over (p, 0); | |
0a35513e AH |
1179 | return p; |
1180 | } | |
1181 | ||
cea094ed | 1182 | #if defined ENABLE_GIMPLE_CHECKING |
726a989a RB |
1183 | /* Complain of a gimple type mismatch and die. */ |
1184 | ||
1185 | void | |
355fe088 | 1186 | gimple_check_failed (const gimple *gs, const char *file, int line, |
726a989a RB |
1187 | const char *function, enum gimple_code code, |
1188 | enum tree_code subcode) | |
1189 | { | |
1190 | internal_error ("gimple check: expected %s(%s), have %s(%s) in %s, at %s:%d", | |
1191 | gimple_code_name[code], | |
5806f481 | 1192 | get_tree_code_name (subcode), |
726a989a | 1193 | gimple_code_name[gimple_code (gs)], |
daa6e488 DM |
1194 | gs->subcode > 0 |
1195 | ? get_tree_code_name ((enum tree_code) gs->subcode) | |
726a989a RB |
1196 | : "", |
1197 | function, trim_filename (file), line); | |
1198 | } | |
726a989a RB |
1199 | #endif /* ENABLE_GIMPLE_CHECKING */ |
1200 | ||
1201 | ||
726a989a RB |
1202 | /* Link gimple statement GS to the end of the sequence *SEQ_P. If |
1203 | *SEQ_P is NULL, a new sequence is allocated. */ | |
1204 | ||
1205 | void | |
355fe088 | 1206 | gimple_seq_add_stmt (gimple_seq *seq_p, gimple *gs) |
726a989a RB |
1207 | { |
1208 | gimple_stmt_iterator si; | |
726a989a RB |
1209 | if (gs == NULL) |
1210 | return; | |
1211 | ||
726a989a RB |
1212 | si = gsi_last (*seq_p); |
1213 | gsi_insert_after (&si, gs, GSI_NEW_STMT); | |
1214 | } | |
1215 | ||
45b0be94 AM |
1216 | /* Link gimple statement GS to the end of the sequence *SEQ_P. If |
1217 | *SEQ_P is NULL, a new sequence is allocated. This function is | |
1218 | similar to gimple_seq_add_stmt, but does not scan the operands. | |
1219 | During gimplification, we need to manipulate statement sequences | |
1220 | before the def/use vectors have been constructed. */ | |
1221 | ||
1222 | void | |
355fe088 | 1223 | gimple_seq_add_stmt_without_update (gimple_seq *seq_p, gimple *gs) |
45b0be94 AM |
1224 | { |
1225 | gimple_stmt_iterator si; | |
1226 | ||
1227 | if (gs == NULL) | |
1228 | return; | |
1229 | ||
1230 | si = gsi_last (*seq_p); | |
1231 | gsi_insert_after_without_update (&si, gs, GSI_NEW_STMT); | |
1232 | } | |
726a989a RB |
1233 | |
1234 | /* Append sequence SRC to the end of sequence *DST_P. If *DST_P is | |
1235 | NULL, a new sequence is allocated. */ | |
1236 | ||
1237 | void | |
1238 | gimple_seq_add_seq (gimple_seq *dst_p, gimple_seq src) | |
1239 | { | |
1240 | gimple_stmt_iterator si; | |
726a989a RB |
1241 | if (src == NULL) |
1242 | return; | |
1243 | ||
726a989a RB |
1244 | si = gsi_last (*dst_p); |
1245 | gsi_insert_seq_after (&si, src, GSI_NEW_STMT); | |
1246 | } | |
1247 | ||
fef5a0d9 RB |
1248 | /* Append sequence SRC to the end of sequence *DST_P. If *DST_P is |
1249 | NULL, a new sequence is allocated. This function is | |
1250 | similar to gimple_seq_add_seq, but does not scan the operands. */ | |
1251 | ||
1252 | void | |
1253 | gimple_seq_add_seq_without_update (gimple_seq *dst_p, gimple_seq src) | |
1254 | { | |
1255 | gimple_stmt_iterator si; | |
1256 | if (src == NULL) | |
1257 | return; | |
1258 | ||
1259 | si = gsi_last (*dst_p); | |
1260 | gsi_insert_seq_after_without_update (&si, src, GSI_NEW_STMT); | |
1261 | } | |
1262 | ||
45b0be94 AM |
1263 | /* Determine whether to assign a location to the statement GS. */ |
1264 | ||
1265 | static bool | |
355fe088 | 1266 | should_carry_location_p (gimple *gs) |
45b0be94 AM |
1267 | { |
1268 | /* Don't emit a line note for a label. We particularly don't want to | |
1269 | emit one for the break label, since it doesn't actually correspond | |
1270 | to the beginning of the loop/switch. */ | |
1271 | if (gimple_code (gs) == GIMPLE_LABEL) | |
1272 | return false; | |
1273 | ||
1274 | return true; | |
1275 | } | |
1276 | ||
1277 | /* Set the location for gimple statement GS to LOCATION. */ | |
1278 | ||
1279 | static void | |
355fe088 | 1280 | annotate_one_with_location (gimple *gs, location_t location) |
45b0be94 AM |
1281 | { |
1282 | if (!gimple_has_location (gs) | |
1283 | && !gimple_do_not_emit_location_p (gs) | |
1284 | && should_carry_location_p (gs)) | |
1285 | gimple_set_location (gs, location); | |
1286 | } | |
1287 | ||
1288 | /* Set LOCATION for all the statements after iterator GSI in sequence | |
1289 | SEQ. If GSI is pointing to the end of the sequence, start with the | |
1290 | first statement in SEQ. */ | |
1291 | ||
1292 | void | |
1293 | annotate_all_with_location_after (gimple_seq seq, gimple_stmt_iterator gsi, | |
1294 | location_t location) | |
1295 | { | |
1296 | if (gsi_end_p (gsi)) | |
1297 | gsi = gsi_start (seq); | |
1298 | else | |
1299 | gsi_next (&gsi); | |
1300 | ||
1301 | for (; !gsi_end_p (gsi); gsi_next (&gsi)) | |
1302 | annotate_one_with_location (gsi_stmt (gsi), location); | |
1303 | } | |
1304 | ||
1305 | /* Set the location for all the statements in a sequence STMT_P to LOCATION. */ | |
1306 | ||
1307 | void | |
1308 | annotate_all_with_location (gimple_seq stmt_p, location_t location) | |
1309 | { | |
1310 | gimple_stmt_iterator i; | |
1311 | ||
1312 | if (gimple_seq_empty_p (stmt_p)) | |
1313 | return; | |
1314 | ||
1315 | for (i = gsi_start (stmt_p); !gsi_end_p (i); gsi_next (&i)) | |
1316 | { | |
355fe088 | 1317 | gimple *gs = gsi_stmt (i); |
45b0be94 AM |
1318 | annotate_one_with_location (gs, location); |
1319 | } | |
1320 | } | |
726a989a RB |
1321 | |
1322 | /* Helper function of empty_body_p. Return true if STMT is an empty | |
1323 | statement. */ | |
1324 | ||
1325 | static bool | |
355fe088 | 1326 | empty_stmt_p (gimple *stmt) |
726a989a RB |
1327 | { |
1328 | if (gimple_code (stmt) == GIMPLE_NOP) | |
1329 | return true; | |
538dd0b7 DM |
1330 | if (gbind *bind_stmt = dyn_cast <gbind *> (stmt)) |
1331 | return empty_body_p (gimple_bind_body (bind_stmt)); | |
726a989a RB |
1332 | return false; |
1333 | } | |
1334 | ||
1335 | ||
1336 | /* Return true if BODY contains nothing but empty statements. */ | |
1337 | ||
1338 | bool | |
1339 | empty_body_p (gimple_seq body) | |
1340 | { | |
1341 | gimple_stmt_iterator i; | |
1342 | ||
726a989a RB |
1343 | if (gimple_seq_empty_p (body)) |
1344 | return true; | |
1345 | for (i = gsi_start (body); !gsi_end_p (i); gsi_next (&i)) | |
b5b8b0ac AO |
1346 | if (!empty_stmt_p (gsi_stmt (i)) |
1347 | && !is_gimple_debug (gsi_stmt (i))) | |
726a989a RB |
1348 | return false; |
1349 | ||
1350 | return true; | |
1351 | } | |
1352 | ||
1353 | ||
1354 | /* Perform a deep copy of sequence SRC and return the result. */ | |
1355 | ||
1356 | gimple_seq | |
1357 | gimple_seq_copy (gimple_seq src) | |
1358 | { | |
1359 | gimple_stmt_iterator gsi; | |
355a7673 | 1360 | gimple_seq new_seq = NULL; |
355fe088 | 1361 | gimple *stmt; |
726a989a RB |
1362 | |
1363 | for (gsi = gsi_start (src); !gsi_end_p (gsi); gsi_next (&gsi)) | |
1364 | { | |
1365 | stmt = gimple_copy (gsi_stmt (gsi)); | |
82d6e6fc | 1366 | gimple_seq_add_stmt (&new_seq, stmt); |
726a989a RB |
1367 | } |
1368 | ||
82d6e6fc | 1369 | return new_seq; |
726a989a RB |
1370 | } |
1371 | ||
1372 | ||
726a989a | 1373 | |
25583c4f RS |
1374 | /* Return true if calls C1 and C2 are known to go to the same function. */ |
1375 | ||
1376 | bool | |
355fe088 | 1377 | gimple_call_same_target_p (const gimple *c1, const gimple *c2) |
25583c4f RS |
1378 | { |
1379 | if (gimple_call_internal_p (c1)) | |
1380 | return (gimple_call_internal_p (c2) | |
8ab78162 | 1381 | && gimple_call_internal_fn (c1) == gimple_call_internal_fn (c2) |
3433ee35 NS |
1382 | && (!gimple_call_internal_unique_p (as_a <const gcall *> (c1)) |
1383 | || c1 == c2)); | |
25583c4f RS |
1384 | else |
1385 | return (gimple_call_fn (c1) == gimple_call_fn (c2) | |
1386 | || (gimple_call_fndecl (c1) | |
1387 | && gimple_call_fndecl (c1) == gimple_call_fndecl (c2))); | |
1388 | } | |
1389 | ||
726a989a RB |
1390 | /* Detect flags from a GIMPLE_CALL. This is just like |
1391 | call_expr_flags, but for gimple tuples. */ | |
1392 | ||
1393 | int | |
355fe088 | 1394 | gimple_call_flags (const gimple *stmt) |
726a989a RB |
1395 | { |
1396 | int flags; | |
1397 | tree decl = gimple_call_fndecl (stmt); | |
726a989a RB |
1398 | |
1399 | if (decl) | |
1400 | flags = flags_from_decl_or_type (decl); | |
25583c4f RS |
1401 | else if (gimple_call_internal_p (stmt)) |
1402 | flags = internal_fn_flags (gimple_call_internal_fn (stmt)); | |
726a989a | 1403 | else |
97e03fa1 | 1404 | flags = flags_from_decl_or_type (gimple_call_fntype (stmt)); |
726a989a | 1405 | |
daa6e488 | 1406 | if (stmt->subcode & GF_CALL_NOTHROW) |
9bb1a81b JM |
1407 | flags |= ECF_NOTHROW; |
1408 | ||
4c640e26 EB |
1409 | if (stmt->subcode & GF_CALL_BY_DESCRIPTOR) |
1410 | flags |= ECF_BY_DESCRIPTOR; | |
1411 | ||
726a989a RB |
1412 | return flags; |
1413 | } | |
1414 | ||
25583c4f RS |
1415 | /* Return the "fn spec" string for call STMT. */ |
1416 | ||
b78475cf | 1417 | static const_tree |
538dd0b7 | 1418 | gimple_call_fnspec (const gcall *stmt) |
25583c4f RS |
1419 | { |
1420 | tree type, attr; | |
1421 | ||
b78475cf YG |
1422 | if (gimple_call_internal_p (stmt)) |
1423 | return internal_fn_fnspec (gimple_call_internal_fn (stmt)); | |
1424 | ||
25583c4f RS |
1425 | type = gimple_call_fntype (stmt); |
1426 | if (!type) | |
1427 | return NULL_TREE; | |
1428 | ||
1429 | attr = lookup_attribute ("fn spec", TYPE_ATTRIBUTES (type)); | |
1430 | if (!attr) | |
1431 | return NULL_TREE; | |
1432 | ||
1433 | return TREE_VALUE (TREE_VALUE (attr)); | |
1434 | } | |
1435 | ||
0b7b376d RG |
1436 | /* Detects argument flags for argument number ARG on call STMT. */ |
1437 | ||
1438 | int | |
538dd0b7 | 1439 | gimple_call_arg_flags (const gcall *stmt, unsigned arg) |
0b7b376d | 1440 | { |
b78475cf | 1441 | const_tree attr = gimple_call_fnspec (stmt); |
0b7b376d | 1442 | |
25583c4f | 1443 | if (!attr || 1 + arg >= (unsigned) TREE_STRING_LENGTH (attr)) |
0b7b376d RG |
1444 | return 0; |
1445 | ||
1446 | switch (TREE_STRING_POINTER (attr)[1 + arg]) | |
1447 | { | |
1448 | case 'x': | |
1449 | case 'X': | |
1450 | return EAF_UNUSED; | |
1451 | ||
1452 | case 'R': | |
1453 | return EAF_DIRECT | EAF_NOCLOBBER | EAF_NOESCAPE; | |
1454 | ||
1455 | case 'r': | |
1456 | return EAF_NOCLOBBER | EAF_NOESCAPE; | |
1457 | ||
1458 | case 'W': | |
1459 | return EAF_DIRECT | EAF_NOESCAPE; | |
1460 | ||
1461 | case 'w': | |
1462 | return EAF_NOESCAPE; | |
1463 | ||
1464 | case '.': | |
1465 | default: | |
1466 | return 0; | |
1467 | } | |
1468 | } | |
1469 | ||
1470 | /* Detects return flags for the call STMT. */ | |
1471 | ||
1472 | int | |
538dd0b7 | 1473 | gimple_call_return_flags (const gcall *stmt) |
0b7b376d | 1474 | { |
b78475cf | 1475 | const_tree attr; |
0b7b376d RG |
1476 | |
1477 | if (gimple_call_flags (stmt) & ECF_MALLOC) | |
1478 | return ERF_NOALIAS; | |
1479 | ||
25583c4f RS |
1480 | attr = gimple_call_fnspec (stmt); |
1481 | if (!attr || TREE_STRING_LENGTH (attr) < 1) | |
0b7b376d RG |
1482 | return 0; |
1483 | ||
1484 | switch (TREE_STRING_POINTER (attr)[0]) | |
1485 | { | |
1486 | case '1': | |
1487 | case '2': | |
1488 | case '3': | |
1489 | case '4': | |
1490 | return ERF_RETURNS_ARG | (TREE_STRING_POINTER (attr)[0] - '1'); | |
1491 | ||
1492 | case 'm': | |
1493 | return ERF_NOALIAS; | |
1494 | ||
1495 | case '.': | |
1496 | default: | |
1497 | return 0; | |
1498 | } | |
1499 | } | |
726a989a | 1500 | |
3dbe9454 | 1501 | |
726a989a RB |
1502 | /* Return true if GS is a copy assignment. */ |
1503 | ||
1504 | bool | |
355fe088 | 1505 | gimple_assign_copy_p (gimple *gs) |
726a989a | 1506 | { |
3dbe9454 RG |
1507 | return (gimple_assign_single_p (gs) |
1508 | && is_gimple_val (gimple_op (gs, 1))); | |
726a989a RB |
1509 | } |
1510 | ||
1511 | ||
1512 | /* Return true if GS is a SSA_NAME copy assignment. */ | |
1513 | ||
1514 | bool | |
355fe088 | 1515 | gimple_assign_ssa_name_copy_p (gimple *gs) |
726a989a | 1516 | { |
3dbe9454 | 1517 | return (gimple_assign_single_p (gs) |
726a989a RB |
1518 | && TREE_CODE (gimple_assign_lhs (gs)) == SSA_NAME |
1519 | && TREE_CODE (gimple_assign_rhs1 (gs)) == SSA_NAME); | |
1520 | } | |
1521 | ||
1522 | ||
726a989a RB |
1523 | /* Return true if GS is an assignment with a unary RHS, but the |
1524 | operator has no effect on the assigned value. The logic is adapted | |
1525 | from STRIP_NOPS. This predicate is intended to be used in tuplifying | |
1526 | instances in which STRIP_NOPS was previously applied to the RHS of | |
1527 | an assignment. | |
1528 | ||
1529 | NOTE: In the use cases that led to the creation of this function | |
1530 | and of gimple_assign_single_p, it is typical to test for either | |
1531 | condition and to proceed in the same manner. In each case, the | |
1532 | assigned value is represented by the single RHS operand of the | |
1533 | assignment. I suspect there may be cases where gimple_assign_copy_p, | |
1534 | gimple_assign_single_p, or equivalent logic is used where a similar | |
1535 | treatment of unary NOPs is appropriate. */ | |
b8698a0f | 1536 | |
726a989a | 1537 | bool |
355fe088 | 1538 | gimple_assign_unary_nop_p (gimple *gs) |
726a989a | 1539 | { |
3dbe9454 | 1540 | return (is_gimple_assign (gs) |
1a87cf0c | 1541 | && (CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (gs)) |
726a989a RB |
1542 | || gimple_assign_rhs_code (gs) == NON_LVALUE_EXPR) |
1543 | && gimple_assign_rhs1 (gs) != error_mark_node | |
1544 | && (TYPE_MODE (TREE_TYPE (gimple_assign_lhs (gs))) | |
1545 | == TYPE_MODE (TREE_TYPE (gimple_assign_rhs1 (gs))))); | |
1546 | } | |
1547 | ||
1548 | /* Set BB to be the basic block holding G. */ | |
1549 | ||
1550 | void | |
355fe088 | 1551 | gimple_set_bb (gimple *stmt, basic_block bb) |
726a989a | 1552 | { |
daa6e488 | 1553 | stmt->bb = bb; |
726a989a | 1554 | |
45b62594 RB |
1555 | if (gimple_code (stmt) != GIMPLE_LABEL) |
1556 | return; | |
1557 | ||
726a989a RB |
1558 | /* If the statement is a label, add the label to block-to-labels map |
1559 | so that we can speed up edge creation for GIMPLE_GOTOs. */ | |
45b62594 | 1560 | if (cfun->cfg) |
726a989a RB |
1561 | { |
1562 | tree t; | |
1563 | int uid; | |
1564 | ||
538dd0b7 | 1565 | t = gimple_label_label (as_a <glabel *> (stmt)); |
726a989a RB |
1566 | uid = LABEL_DECL_UID (t); |
1567 | if (uid == -1) | |
1568 | { | |
99729d91 DM |
1569 | unsigned old_len = |
1570 | vec_safe_length (label_to_block_map_for_fn (cfun)); | |
726a989a RB |
1571 | LABEL_DECL_UID (t) = uid = cfun->cfg->last_label_uid++; |
1572 | if (old_len <= (unsigned) uid) | |
1573 | { | |
5006671f | 1574 | unsigned new_len = 3 * uid / 2 + 1; |
726a989a | 1575 | |
99729d91 DM |
1576 | vec_safe_grow_cleared (label_to_block_map_for_fn (cfun), |
1577 | new_len); | |
726a989a RB |
1578 | } |
1579 | } | |
1580 | ||
99729d91 | 1581 | (*label_to_block_map_for_fn (cfun))[uid] = bb; |
726a989a RB |
1582 | } |
1583 | } | |
1584 | ||
1585 | ||
726a989a RB |
1586 | /* Modify the RHS of the assignment pointed-to by GSI using the |
1587 | operands in the expression tree EXPR. | |
1588 | ||
1589 | NOTE: The statement pointed-to by GSI may be reallocated if it | |
1590 | did not have enough operand slots. | |
1591 | ||
1592 | This function is useful to convert an existing tree expression into | |
1593 | the flat representation used for the RHS of a GIMPLE assignment. | |
1594 | It will reallocate memory as needed to expand or shrink the number | |
1595 | of operand slots needed to represent EXPR. | |
1596 | ||
1597 | NOTE: If you find yourself building a tree and then calling this | |
1598 | function, you are most certainly doing it the slow way. It is much | |
1599 | better to build a new assignment or to use the function | |
1600 | gimple_assign_set_rhs_with_ops, which does not require an | |
1601 | expression tree to be built. */ | |
1602 | ||
1603 | void | |
1604 | gimple_assign_set_rhs_from_tree (gimple_stmt_iterator *gsi, tree expr) | |
1605 | { | |
1606 | enum tree_code subcode; | |
0354c0c7 | 1607 | tree op1, op2, op3; |
726a989a | 1608 | |
d1e2bb2d | 1609 | extract_ops_from_tree (expr, &subcode, &op1, &op2, &op3); |
00d66391 | 1610 | gimple_assign_set_rhs_with_ops (gsi, subcode, op1, op2, op3); |
726a989a RB |
1611 | } |
1612 | ||
1613 | ||
1614 | /* Set the RHS of assignment statement pointed-to by GSI to CODE with | |
0354c0c7 | 1615 | operands OP1, OP2 and OP3. |
726a989a RB |
1616 | |
1617 | NOTE: The statement pointed-to by GSI may be reallocated if it | |
1618 | did not have enough operand slots. */ | |
1619 | ||
1620 | void | |
00d66391 JJ |
1621 | gimple_assign_set_rhs_with_ops (gimple_stmt_iterator *gsi, enum tree_code code, |
1622 | tree op1, tree op2, tree op3) | |
726a989a RB |
1623 | { |
1624 | unsigned new_rhs_ops = get_gimple_rhs_num_ops (code); | |
355fe088 | 1625 | gimple *stmt = gsi_stmt (*gsi); |
726a989a RB |
1626 | |
1627 | /* If the new CODE needs more operands, allocate a new statement. */ | |
1628 | if (gimple_num_ops (stmt) < new_rhs_ops + 1) | |
1629 | { | |
1630 | tree lhs = gimple_assign_lhs (stmt); | |
355fe088 | 1631 | gimple *new_stmt = gimple_alloc (gimple_code (stmt), new_rhs_ops + 1); |
726a989a | 1632 | memcpy (new_stmt, stmt, gimple_size (gimple_code (stmt))); |
355a7673 | 1633 | gimple_init_singleton (new_stmt); |
a8697b27 | 1634 | gsi_replace (gsi, new_stmt, false); |
726a989a RB |
1635 | stmt = new_stmt; |
1636 | ||
1637 | /* The LHS needs to be reset as this also changes the SSA name | |
1638 | on the LHS. */ | |
1639 | gimple_assign_set_lhs (stmt, lhs); | |
1640 | } | |
1641 | ||
1642 | gimple_set_num_ops (stmt, new_rhs_ops + 1); | |
1643 | gimple_set_subcode (stmt, code); | |
1644 | gimple_assign_set_rhs1 (stmt, op1); | |
1645 | if (new_rhs_ops > 1) | |
1646 | gimple_assign_set_rhs2 (stmt, op2); | |
0354c0c7 BS |
1647 | if (new_rhs_ops > 2) |
1648 | gimple_assign_set_rhs3 (stmt, op3); | |
726a989a RB |
1649 | } |
1650 | ||
1651 | ||
1652 | /* Return the LHS of a statement that performs an assignment, | |
1653 | either a GIMPLE_ASSIGN or a GIMPLE_CALL. Returns NULL_TREE | |
1654 | for a call to a function that returns no value, or for a | |
1655 | statement other than an assignment or a call. */ | |
1656 | ||
1657 | tree | |
355fe088 | 1658 | gimple_get_lhs (const gimple *stmt) |
726a989a | 1659 | { |
e0c68ce9 | 1660 | enum gimple_code code = gimple_code (stmt); |
726a989a RB |
1661 | |
1662 | if (code == GIMPLE_ASSIGN) | |
1663 | return gimple_assign_lhs (stmt); | |
1664 | else if (code == GIMPLE_CALL) | |
1665 | return gimple_call_lhs (stmt); | |
1666 | else | |
1667 | return NULL_TREE; | |
1668 | } | |
1669 | ||
1670 | ||
1671 | /* Set the LHS of a statement that performs an assignment, | |
1672 | either a GIMPLE_ASSIGN or a GIMPLE_CALL. */ | |
1673 | ||
1674 | void | |
355fe088 | 1675 | gimple_set_lhs (gimple *stmt, tree lhs) |
726a989a | 1676 | { |
e0c68ce9 | 1677 | enum gimple_code code = gimple_code (stmt); |
726a989a RB |
1678 | |
1679 | if (code == GIMPLE_ASSIGN) | |
1680 | gimple_assign_set_lhs (stmt, lhs); | |
1681 | else if (code == GIMPLE_CALL) | |
1682 | gimple_call_set_lhs (stmt, lhs); | |
1683 | else | |
c3284718 | 1684 | gcc_unreachable (); |
726a989a RB |
1685 | } |
1686 | ||
1687 | ||
1688 | /* Return a deep copy of statement STMT. All the operands from STMT | |
1689 | are reallocated and copied using unshare_expr. The DEF, USE, VDEF | |
355a7673 MM |
1690 | and VUSE operand arrays are set to empty in the new copy. The new |
1691 | copy isn't part of any sequence. */ | |
726a989a | 1692 | |
355fe088 TS |
1693 | gimple * |
1694 | gimple_copy (gimple *stmt) | |
726a989a RB |
1695 | { |
1696 | enum gimple_code code = gimple_code (stmt); | |
1697 | unsigned num_ops = gimple_num_ops (stmt); | |
355fe088 | 1698 | gimple *copy = gimple_alloc (code, num_ops); |
726a989a RB |
1699 | unsigned i; |
1700 | ||
1701 | /* Shallow copy all the fields from STMT. */ | |
1702 | memcpy (copy, stmt, gimple_size (code)); | |
355a7673 | 1703 | gimple_init_singleton (copy); |
726a989a RB |
1704 | |
1705 | /* If STMT has sub-statements, deep-copy them as well. */ | |
1706 | if (gimple_has_substatements (stmt)) | |
1707 | { | |
1708 | gimple_seq new_seq; | |
1709 | tree t; | |
1710 | ||
1711 | switch (gimple_code (stmt)) | |
1712 | { | |
1713 | case GIMPLE_BIND: | |
538dd0b7 DM |
1714 | { |
1715 | gbind *bind_stmt = as_a <gbind *> (stmt); | |
1716 | gbind *bind_copy = as_a <gbind *> (copy); | |
1717 | new_seq = gimple_seq_copy (gimple_bind_body (bind_stmt)); | |
1718 | gimple_bind_set_body (bind_copy, new_seq); | |
1719 | gimple_bind_set_vars (bind_copy, | |
1720 | unshare_expr (gimple_bind_vars (bind_stmt))); | |
1721 | gimple_bind_set_block (bind_copy, gimple_bind_block (bind_stmt)); | |
1722 | } | |
726a989a RB |
1723 | break; |
1724 | ||
1725 | case GIMPLE_CATCH: | |
538dd0b7 DM |
1726 | { |
1727 | gcatch *catch_stmt = as_a <gcatch *> (stmt); | |
1728 | gcatch *catch_copy = as_a <gcatch *> (copy); | |
1729 | new_seq = gimple_seq_copy (gimple_catch_handler (catch_stmt)); | |
1730 | gimple_catch_set_handler (catch_copy, new_seq); | |
1731 | t = unshare_expr (gimple_catch_types (catch_stmt)); | |
1732 | gimple_catch_set_types (catch_copy, t); | |
1733 | } | |
726a989a RB |
1734 | break; |
1735 | ||
1736 | case GIMPLE_EH_FILTER: | |
538dd0b7 DM |
1737 | { |
1738 | geh_filter *eh_filter_stmt = as_a <geh_filter *> (stmt); | |
1739 | geh_filter *eh_filter_copy = as_a <geh_filter *> (copy); | |
1740 | new_seq | |
1741 | = gimple_seq_copy (gimple_eh_filter_failure (eh_filter_stmt)); | |
1742 | gimple_eh_filter_set_failure (eh_filter_copy, new_seq); | |
1743 | t = unshare_expr (gimple_eh_filter_types (eh_filter_stmt)); | |
1744 | gimple_eh_filter_set_types (eh_filter_copy, t); | |
1745 | } | |
726a989a RB |
1746 | break; |
1747 | ||
0a35513e | 1748 | case GIMPLE_EH_ELSE: |
538dd0b7 DM |
1749 | { |
1750 | geh_else *eh_else_stmt = as_a <geh_else *> (stmt); | |
1751 | geh_else *eh_else_copy = as_a <geh_else *> (copy); | |
1752 | new_seq = gimple_seq_copy (gimple_eh_else_n_body (eh_else_stmt)); | |
1753 | gimple_eh_else_set_n_body (eh_else_copy, new_seq); | |
1754 | new_seq = gimple_seq_copy (gimple_eh_else_e_body (eh_else_stmt)); | |
1755 | gimple_eh_else_set_e_body (eh_else_copy, new_seq); | |
1756 | } | |
0a35513e AH |
1757 | break; |
1758 | ||
726a989a | 1759 | case GIMPLE_TRY: |
538dd0b7 DM |
1760 | { |
1761 | gtry *try_stmt = as_a <gtry *> (stmt); | |
1762 | gtry *try_copy = as_a <gtry *> (copy); | |
1763 | new_seq = gimple_seq_copy (gimple_try_eval (try_stmt)); | |
1764 | gimple_try_set_eval (try_copy, new_seq); | |
1765 | new_seq = gimple_seq_copy (gimple_try_cleanup (try_stmt)); | |
1766 | gimple_try_set_cleanup (try_copy, new_seq); | |
1767 | } | |
726a989a RB |
1768 | break; |
1769 | ||
1770 | case GIMPLE_OMP_FOR: | |
1771 | new_seq = gimple_seq_copy (gimple_omp_for_pre_body (stmt)); | |
1772 | gimple_omp_for_set_pre_body (copy, new_seq); | |
1773 | t = unshare_expr (gimple_omp_for_clauses (stmt)); | |
1774 | gimple_omp_for_set_clauses (copy, t); | |
daa6e488 | 1775 | { |
538dd0b7 | 1776 | gomp_for *omp_for_copy = as_a <gomp_for *> (copy); |
766090c2 TS |
1777 | omp_for_copy->iter = ggc_vec_alloc<gimple_omp_for_iter> |
1778 | ( gimple_omp_for_collapse (stmt)); | |
daa6e488 | 1779 | } |
726a989a RB |
1780 | for (i = 0; i < gimple_omp_for_collapse (stmt); i++) |
1781 | { | |
1782 | gimple_omp_for_set_cond (copy, i, | |
1783 | gimple_omp_for_cond (stmt, i)); | |
1784 | gimple_omp_for_set_index (copy, i, | |
1785 | gimple_omp_for_index (stmt, i)); | |
1786 | t = unshare_expr (gimple_omp_for_initial (stmt, i)); | |
1787 | gimple_omp_for_set_initial (copy, i, t); | |
1788 | t = unshare_expr (gimple_omp_for_final (stmt, i)); | |
1789 | gimple_omp_for_set_final (copy, i, t); | |
1790 | t = unshare_expr (gimple_omp_for_incr (stmt, i)); | |
1791 | gimple_omp_for_set_incr (copy, i, t); | |
1792 | } | |
1793 | goto copy_omp_body; | |
1794 | ||
1795 | case GIMPLE_OMP_PARALLEL: | |
538dd0b7 DM |
1796 | { |
1797 | gomp_parallel *omp_par_stmt = as_a <gomp_parallel *> (stmt); | |
1798 | gomp_parallel *omp_par_copy = as_a <gomp_parallel *> (copy); | |
1799 | t = unshare_expr (gimple_omp_parallel_clauses (omp_par_stmt)); | |
1800 | gimple_omp_parallel_set_clauses (omp_par_copy, t); | |
1801 | t = unshare_expr (gimple_omp_parallel_child_fn (omp_par_stmt)); | |
1802 | gimple_omp_parallel_set_child_fn (omp_par_copy, t); | |
1803 | t = unshare_expr (gimple_omp_parallel_data_arg (omp_par_stmt)); | |
1804 | gimple_omp_parallel_set_data_arg (omp_par_copy, t); | |
1805 | } | |
726a989a RB |
1806 | goto copy_omp_body; |
1807 | ||
1808 | case GIMPLE_OMP_TASK: | |
1809 | t = unshare_expr (gimple_omp_task_clauses (stmt)); | |
1810 | gimple_omp_task_set_clauses (copy, t); | |
1811 | t = unshare_expr (gimple_omp_task_child_fn (stmt)); | |
1812 | gimple_omp_task_set_child_fn (copy, t); | |
1813 | t = unshare_expr (gimple_omp_task_data_arg (stmt)); | |
1814 | gimple_omp_task_set_data_arg (copy, t); | |
1815 | t = unshare_expr (gimple_omp_task_copy_fn (stmt)); | |
1816 | gimple_omp_task_set_copy_fn (copy, t); | |
1817 | t = unshare_expr (gimple_omp_task_arg_size (stmt)); | |
1818 | gimple_omp_task_set_arg_size (copy, t); | |
1819 | t = unshare_expr (gimple_omp_task_arg_align (stmt)); | |
1820 | gimple_omp_task_set_arg_align (copy, t); | |
1821 | goto copy_omp_body; | |
1822 | ||
1823 | case GIMPLE_OMP_CRITICAL: | |
d9a6bd32 JJ |
1824 | t = unshare_expr (gimple_omp_critical_name |
1825 | (as_a <gomp_critical *> (stmt))); | |
538dd0b7 | 1826 | gimple_omp_critical_set_name (as_a <gomp_critical *> (copy), t); |
d9a6bd32 JJ |
1827 | t = unshare_expr (gimple_omp_critical_clauses |
1828 | (as_a <gomp_critical *> (stmt))); | |
1829 | gimple_omp_critical_set_clauses (as_a <gomp_critical *> (copy), t); | |
1830 | goto copy_omp_body; | |
1831 | ||
1832 | case GIMPLE_OMP_ORDERED: | |
1833 | t = unshare_expr (gimple_omp_ordered_clauses | |
1834 | (as_a <gomp_ordered *> (stmt))); | |
1835 | gimple_omp_ordered_set_clauses (as_a <gomp_ordered *> (copy), t); | |
726a989a RB |
1836 | goto copy_omp_body; |
1837 | ||
1838 | case GIMPLE_OMP_SECTIONS: | |
1839 | t = unshare_expr (gimple_omp_sections_clauses (stmt)); | |
1840 | gimple_omp_sections_set_clauses (copy, t); | |
1841 | t = unshare_expr (gimple_omp_sections_control (stmt)); | |
1842 | gimple_omp_sections_set_control (copy, t); | |
8a866b82 | 1843 | goto copy_omp_body; |
726a989a RB |
1844 | |
1845 | case GIMPLE_OMP_SINGLE: | |
8a866b82 TV |
1846 | { |
1847 | gomp_single *omp_single_copy = as_a <gomp_single *> (copy); | |
1848 | t = unshare_expr (gimple_omp_single_clauses (stmt)); | |
1849 | gimple_omp_single_set_clauses (omp_single_copy, t); | |
1850 | } | |
1851 | goto copy_omp_body; | |
1852 | ||
acf0174b | 1853 | case GIMPLE_OMP_TARGET: |
8a866b82 TV |
1854 | { |
1855 | gomp_target *omp_target_stmt = as_a <gomp_target *> (stmt); | |
1856 | gomp_target *omp_target_copy = as_a <gomp_target *> (copy); | |
1857 | t = unshare_expr (gimple_omp_target_clauses (omp_target_stmt)); | |
1858 | gimple_omp_target_set_clauses (omp_target_copy, t); | |
1859 | t = unshare_expr (gimple_omp_target_data_arg (omp_target_stmt)); | |
1860 | gimple_omp_target_set_data_arg (omp_target_copy, t); | |
1861 | } | |
1862 | goto copy_omp_body; | |
1863 | ||
acf0174b | 1864 | case GIMPLE_OMP_TEAMS: |
8a866b82 TV |
1865 | { |
1866 | gomp_teams *omp_teams_copy = as_a <gomp_teams *> (copy); | |
1867 | t = unshare_expr (gimple_omp_teams_clauses (stmt)); | |
1868 | gimple_omp_teams_set_clauses (omp_teams_copy, t); | |
1869 | } | |
1870 | /* FALLTHRU */ | |
1871 | ||
726a989a RB |
1872 | case GIMPLE_OMP_SECTION: |
1873 | case GIMPLE_OMP_MASTER: | |
acf0174b | 1874 | case GIMPLE_OMP_TASKGROUP: |
b2b40051 | 1875 | case GIMPLE_OMP_GRID_BODY: |
726a989a RB |
1876 | copy_omp_body: |
1877 | new_seq = gimple_seq_copy (gimple_omp_body (stmt)); | |
1878 | gimple_omp_set_body (copy, new_seq); | |
1879 | break; | |
1880 | ||
0a35513e | 1881 | case GIMPLE_TRANSACTION: |
538dd0b7 DM |
1882 | new_seq = gimple_seq_copy (gimple_transaction_body ( |
1883 | as_a <gtransaction *> (stmt))); | |
1884 | gimple_transaction_set_body (as_a <gtransaction *> (copy), | |
1885 | new_seq); | |
0a35513e AH |
1886 | break; |
1887 | ||
726a989a RB |
1888 | case GIMPLE_WITH_CLEANUP_EXPR: |
1889 | new_seq = gimple_seq_copy (gimple_wce_cleanup (stmt)); | |
1890 | gimple_wce_set_cleanup (copy, new_seq); | |
1891 | break; | |
1892 | ||
1893 | default: | |
1894 | gcc_unreachable (); | |
1895 | } | |
1896 | } | |
1897 | ||
1898 | /* Make copy of operands. */ | |
483ef49f RG |
1899 | for (i = 0; i < num_ops; i++) |
1900 | gimple_set_op (copy, i, unshare_expr (gimple_op (stmt, i))); | |
726a989a | 1901 | |
483ef49f RG |
1902 | if (gimple_has_mem_ops (stmt)) |
1903 | { | |
1904 | gimple_set_vdef (copy, gimple_vdef (stmt)); | |
1905 | gimple_set_vuse (copy, gimple_vuse (stmt)); | |
1906 | } | |
726a989a | 1907 | |
483ef49f RG |
1908 | /* Clear out SSA operand vectors on COPY. */ |
1909 | if (gimple_has_ops (stmt)) | |
1910 | { | |
483ef49f | 1911 | gimple_set_use_ops (copy, NULL); |
726a989a | 1912 | |
5006671f RG |
1913 | /* SSA operands need to be updated. */ |
1914 | gimple_set_modified (copy, true); | |
726a989a RB |
1915 | } |
1916 | ||
1917 | return copy; | |
1918 | } | |
1919 | ||
1920 | ||
726a989a RB |
1921 | /* Return true if statement S has side-effects. We consider a |
1922 | statement to have side effects if: | |
1923 | ||
1924 | - It is a GIMPLE_CALL not marked with ECF_PURE or ECF_CONST. | |
1925 | - Any of its operands are marked TREE_THIS_VOLATILE or TREE_SIDE_EFFECTS. */ | |
1926 | ||
1927 | bool | |
355fe088 | 1928 | gimple_has_side_effects (const gimple *s) |
726a989a | 1929 | { |
b5b8b0ac AO |
1930 | if (is_gimple_debug (s)) |
1931 | return false; | |
1932 | ||
726a989a RB |
1933 | /* We don't have to scan the arguments to check for |
1934 | volatile arguments, though, at present, we still | |
1935 | do a scan to check for TREE_SIDE_EFFECTS. */ | |
1936 | if (gimple_has_volatile_ops (s)) | |
1937 | return true; | |
1938 | ||
179184e3 | 1939 | if (gimple_code (s) == GIMPLE_ASM |
538dd0b7 | 1940 | && gimple_asm_volatile_p (as_a <const gasm *> (s))) |
179184e3 RG |
1941 | return true; |
1942 | ||
726a989a RB |
1943 | if (is_gimple_call (s)) |
1944 | { | |
723afc44 | 1945 | int flags = gimple_call_flags (s); |
726a989a | 1946 | |
723afc44 RG |
1947 | /* An infinite loop is considered a side effect. */ |
1948 | if (!(flags & (ECF_CONST | ECF_PURE)) | |
1949 | || (flags & ECF_LOOPING_CONST_OR_PURE)) | |
726a989a RB |
1950 | return true; |
1951 | ||
726a989a RB |
1952 | return false; |
1953 | } | |
726a989a RB |
1954 | |
1955 | return false; | |
1956 | } | |
1957 | ||
726a989a | 1958 | /* Helper for gimple_could_trap_p and gimple_assign_rhs_could_trap_p. |
e1fd038a SP |
1959 | Return true if S can trap. When INCLUDE_MEM is true, check whether |
1960 | the memory operations could trap. When INCLUDE_STORES is true and | |
1961 | S is a GIMPLE_ASSIGN, the LHS of the assignment is also checked. */ | |
726a989a | 1962 | |
e1fd038a | 1963 | bool |
355fe088 | 1964 | gimple_could_trap_p_1 (gimple *s, bool include_mem, bool include_stores) |
726a989a | 1965 | { |
726a989a RB |
1966 | tree t, div = NULL_TREE; |
1967 | enum tree_code op; | |
1968 | ||
e1fd038a SP |
1969 | if (include_mem) |
1970 | { | |
1971 | unsigned i, start = (is_gimple_assign (s) && !include_stores) ? 1 : 0; | |
726a989a | 1972 | |
e1fd038a SP |
1973 | for (i = start; i < gimple_num_ops (s); i++) |
1974 | if (tree_could_trap_p (gimple_op (s, i))) | |
1975 | return true; | |
1976 | } | |
726a989a RB |
1977 | |
1978 | switch (gimple_code (s)) | |
1979 | { | |
1980 | case GIMPLE_ASM: | |
538dd0b7 | 1981 | return gimple_asm_volatile_p (as_a <gasm *> (s)); |
726a989a RB |
1982 | |
1983 | case GIMPLE_CALL: | |
1984 | t = gimple_call_fndecl (s); | |
1985 | /* Assume that calls to weak functions may trap. */ | |
1986 | if (!t || !DECL_P (t) || DECL_WEAK (t)) | |
1987 | return true; | |
1988 | return false; | |
1989 | ||
1990 | case GIMPLE_ASSIGN: | |
1991 | t = gimple_expr_type (s); | |
1992 | op = gimple_assign_rhs_code (s); | |
1993 | if (get_gimple_rhs_class (op) == GIMPLE_BINARY_RHS) | |
1994 | div = gimple_assign_rhs2 (s); | |
1995 | return (operation_could_trap_p (op, FLOAT_TYPE_P (t), | |
1996 | (INTEGRAL_TYPE_P (t) | |
1997 | && TYPE_OVERFLOW_TRAPS (t)), | |
1998 | div)); | |
1999 | ||
46ec7a06 RB |
2000 | case GIMPLE_COND: |
2001 | t = TREE_TYPE (gimple_cond_lhs (s)); | |
2002 | return operation_could_trap_p (gimple_cond_code (s), | |
2003 | FLOAT_TYPE_P (t), false, NULL_TREE); | |
2004 | ||
726a989a RB |
2005 | default: |
2006 | break; | |
2007 | } | |
2008 | ||
2009 | return false; | |
726a989a RB |
2010 | } |
2011 | ||
726a989a RB |
2012 | /* Return true if statement S can trap. */ |
2013 | ||
2014 | bool | |
355fe088 | 2015 | gimple_could_trap_p (gimple *s) |
726a989a | 2016 | { |
e1fd038a | 2017 | return gimple_could_trap_p_1 (s, true, true); |
726a989a RB |
2018 | } |
2019 | ||
726a989a RB |
2020 | /* Return true if RHS of a GIMPLE_ASSIGN S can trap. */ |
2021 | ||
2022 | bool | |
355fe088 | 2023 | gimple_assign_rhs_could_trap_p (gimple *s) |
726a989a RB |
2024 | { |
2025 | gcc_assert (is_gimple_assign (s)); | |
e1fd038a | 2026 | return gimple_could_trap_p_1 (s, true, false); |
726a989a RB |
2027 | } |
2028 | ||
2029 | ||
2030 | /* Print debugging information for gimple stmts generated. */ | |
2031 | ||
2032 | void | |
2033 | dump_gimple_statistics (void) | |
2034 | { | |
726a989a RB |
2035 | int i, total_tuples = 0, total_bytes = 0; |
2036 | ||
7aa6d18a SB |
2037 | if (! GATHER_STATISTICS) |
2038 | { | |
2039 | fprintf (stderr, "No gimple statistics\n"); | |
2040 | return; | |
2041 | } | |
2042 | ||
726a989a RB |
2043 | fprintf (stderr, "\nGIMPLE statements\n"); |
2044 | fprintf (stderr, "Kind Stmts Bytes\n"); | |
2045 | fprintf (stderr, "---------------------------------------\n"); | |
2046 | for (i = 0; i < (int) gimple_alloc_kind_all; ++i) | |
2047 | { | |
2048 | fprintf (stderr, "%-20s %7d %10d\n", gimple_alloc_kind_names[i], | |
2049 | gimple_alloc_counts[i], gimple_alloc_sizes[i]); | |
2050 | total_tuples += gimple_alloc_counts[i]; | |
2051 | total_bytes += gimple_alloc_sizes[i]; | |
2052 | } | |
2053 | fprintf (stderr, "---------------------------------------\n"); | |
2054 | fprintf (stderr, "%-20s %7d %10d\n", "Total", total_tuples, total_bytes); | |
2055 | fprintf (stderr, "---------------------------------------\n"); | |
726a989a RB |
2056 | } |
2057 | ||
2058 | ||
726a989a RB |
2059 | /* Return the number of operands needed on the RHS of a GIMPLE |
2060 | assignment for an expression with tree code CODE. */ | |
2061 | ||
2062 | unsigned | |
2063 | get_gimple_rhs_num_ops (enum tree_code code) | |
2064 | { | |
2065 | enum gimple_rhs_class rhs_class = get_gimple_rhs_class (code); | |
2066 | ||
2067 | if (rhs_class == GIMPLE_UNARY_RHS || rhs_class == GIMPLE_SINGLE_RHS) | |
2068 | return 1; | |
2069 | else if (rhs_class == GIMPLE_BINARY_RHS) | |
2070 | return 2; | |
0354c0c7 BS |
2071 | else if (rhs_class == GIMPLE_TERNARY_RHS) |
2072 | return 3; | |
726a989a RB |
2073 | else |
2074 | gcc_unreachable (); | |
2075 | } | |
2076 | ||
2077 | #define DEFTREECODE(SYM, STRING, TYPE, NARGS) \ | |
2078 | (unsigned char) \ | |
2079 | ((TYPE) == tcc_unary ? GIMPLE_UNARY_RHS \ | |
2080 | : ((TYPE) == tcc_binary \ | |
2081 | || (TYPE) == tcc_comparison) ? GIMPLE_BINARY_RHS \ | |
2082 | : ((TYPE) == tcc_constant \ | |
2083 | || (TYPE) == tcc_declaration \ | |
2084 | || (TYPE) == tcc_reference) ? GIMPLE_SINGLE_RHS \ | |
2085 | : ((SYM) == TRUTH_AND_EXPR \ | |
2086 | || (SYM) == TRUTH_OR_EXPR \ | |
2087 | || (SYM) == TRUTH_XOR_EXPR) ? GIMPLE_BINARY_RHS \ | |
2088 | : (SYM) == TRUTH_NOT_EXPR ? GIMPLE_UNARY_RHS \ | |
4e71066d RG |
2089 | : ((SYM) == COND_EXPR \ |
2090 | || (SYM) == WIDEN_MULT_PLUS_EXPR \ | |
16949072 | 2091 | || (SYM) == WIDEN_MULT_MINUS_EXPR \ |
f471fe72 | 2092 | || (SYM) == DOT_PROD_EXPR \ |
79d652a5 | 2093 | || (SYM) == SAD_EXPR \ |
f471fe72 | 2094 | || (SYM) == REALIGN_LOAD_EXPR \ |
4e71066d | 2095 | || (SYM) == VEC_COND_EXPR \ |
2205ed25 | 2096 | || (SYM) == VEC_PERM_EXPR \ |
483c6429 | 2097 | || (SYM) == BIT_INSERT_EXPR \ |
16949072 | 2098 | || (SYM) == FMA_EXPR) ? GIMPLE_TERNARY_RHS \ |
4e71066d | 2099 | : ((SYM) == CONSTRUCTOR \ |
726a989a RB |
2100 | || (SYM) == OBJ_TYPE_REF \ |
2101 | || (SYM) == ASSERT_EXPR \ | |
2102 | || (SYM) == ADDR_EXPR \ | |
2103 | || (SYM) == WITH_SIZE_EXPR \ | |
4e71066d | 2104 | || (SYM) == SSA_NAME) ? GIMPLE_SINGLE_RHS \ |
726a989a RB |
2105 | : GIMPLE_INVALID_RHS), |
2106 | #define END_OF_BASE_TREE_CODES (unsigned char) GIMPLE_INVALID_RHS, | |
2107 | ||
2108 | const unsigned char gimple_rhs_class_table[] = { | |
2109 | #include "all-tree.def" | |
2110 | }; | |
2111 | ||
2112 | #undef DEFTREECODE | |
2113 | #undef END_OF_BASE_TREE_CODES | |
2114 | ||
726a989a RB |
2115 | /* Canonicalize a tree T for use in a COND_EXPR as conditional. Returns |
2116 | a canonicalized tree that is valid for a COND_EXPR or NULL_TREE, if | |
2117 | we failed to create one. */ | |
2118 | ||
2119 | tree | |
2120 | canonicalize_cond_expr_cond (tree t) | |
2121 | { | |
b66a1bac RG |
2122 | /* Strip conversions around boolean operations. */ |
2123 | if (CONVERT_EXPR_P (t) | |
9b80d091 KT |
2124 | && (truth_value_p (TREE_CODE (TREE_OPERAND (t, 0))) |
2125 | || TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) | |
2126 | == BOOLEAN_TYPE)) | |
b66a1bac RG |
2127 | t = TREE_OPERAND (t, 0); |
2128 | ||
726a989a | 2129 | /* For !x use x == 0. */ |
12430896 | 2130 | if (TREE_CODE (t) == TRUTH_NOT_EXPR) |
726a989a RB |
2131 | { |
2132 | tree top0 = TREE_OPERAND (t, 0); | |
2133 | t = build2 (EQ_EXPR, TREE_TYPE (t), | |
2134 | top0, build_int_cst (TREE_TYPE (top0), 0)); | |
2135 | } | |
2136 | /* For cmp ? 1 : 0 use cmp. */ | |
2137 | else if (TREE_CODE (t) == COND_EXPR | |
2138 | && COMPARISON_CLASS_P (TREE_OPERAND (t, 0)) | |
2139 | && integer_onep (TREE_OPERAND (t, 1)) | |
2140 | && integer_zerop (TREE_OPERAND (t, 2))) | |
2141 | { | |
2142 | tree top0 = TREE_OPERAND (t, 0); | |
2143 | t = build2 (TREE_CODE (top0), TREE_TYPE (t), | |
2144 | TREE_OPERAND (top0, 0), TREE_OPERAND (top0, 1)); | |
2145 | } | |
4481581f JL |
2146 | /* For x ^ y use x != y. */ |
2147 | else if (TREE_CODE (t) == BIT_XOR_EXPR) | |
2148 | t = build2 (NE_EXPR, TREE_TYPE (t), | |
2149 | TREE_OPERAND (t, 0), TREE_OPERAND (t, 1)); | |
2150 | ||
726a989a RB |
2151 | if (is_gimple_condexpr (t)) |
2152 | return t; | |
2153 | ||
2154 | return NULL_TREE; | |
2155 | } | |
2156 | ||
e6c99067 DN |
2157 | /* Build a GIMPLE_CALL identical to STMT but skipping the arguments in |
2158 | the positions marked by the set ARGS_TO_SKIP. */ | |
2159 | ||
538dd0b7 DM |
2160 | gcall * |
2161 | gimple_call_copy_skip_args (gcall *stmt, bitmap args_to_skip) | |
c6f7cfc1 JH |
2162 | { |
2163 | int i; | |
c6f7cfc1 | 2164 | int nargs = gimple_call_num_args (stmt); |
ef062b13 | 2165 | auto_vec<tree> vargs (nargs); |
538dd0b7 | 2166 | gcall *new_stmt; |
c6f7cfc1 JH |
2167 | |
2168 | for (i = 0; i < nargs; i++) | |
2169 | if (!bitmap_bit_p (args_to_skip, i)) | |
9771b263 | 2170 | vargs.quick_push (gimple_call_arg (stmt, i)); |
c6f7cfc1 | 2171 | |
25583c4f RS |
2172 | if (gimple_call_internal_p (stmt)) |
2173 | new_stmt = gimple_build_call_internal_vec (gimple_call_internal_fn (stmt), | |
2174 | vargs); | |
2175 | else | |
2176 | new_stmt = gimple_build_call_vec (gimple_call_fn (stmt), vargs); | |
ef062b13 | 2177 | |
c6f7cfc1 JH |
2178 | if (gimple_call_lhs (stmt)) |
2179 | gimple_call_set_lhs (new_stmt, gimple_call_lhs (stmt)); | |
2180 | ||
5006671f RG |
2181 | gimple_set_vuse (new_stmt, gimple_vuse (stmt)); |
2182 | gimple_set_vdef (new_stmt, gimple_vdef (stmt)); | |
2183 | ||
c6f7cfc1 JH |
2184 | if (gimple_has_location (stmt)) |
2185 | gimple_set_location (new_stmt, gimple_location (stmt)); | |
8d2adc24 | 2186 | gimple_call_copy_flags (new_stmt, stmt); |
c6f7cfc1 | 2187 | gimple_call_set_chain (new_stmt, gimple_call_chain (stmt)); |
5006671f RG |
2188 | |
2189 | gimple_set_modified (new_stmt, true); | |
2190 | ||
c6f7cfc1 JH |
2191 | return new_stmt; |
2192 | } | |
2193 | ||
5006671f | 2194 | |
d7f09764 | 2195 | |
d025732d EB |
2196 | /* Return true if the field decls F1 and F2 are at the same offset. |
2197 | ||
91f2fae8 | 2198 | This is intended to be used on GIMPLE types only. */ |
d7f09764 | 2199 | |
1e4bc4eb | 2200 | bool |
d025732d | 2201 | gimple_compare_field_offset (tree f1, tree f2) |
d7f09764 DN |
2202 | { |
2203 | if (DECL_OFFSET_ALIGN (f1) == DECL_OFFSET_ALIGN (f2)) | |
d025732d EB |
2204 | { |
2205 | tree offset1 = DECL_FIELD_OFFSET (f1); | |
2206 | tree offset2 = DECL_FIELD_OFFSET (f2); | |
2207 | return ((offset1 == offset2 | |
2208 | /* Once gimplification is done, self-referential offsets are | |
2209 | instantiated as operand #2 of the COMPONENT_REF built for | |
2210 | each access and reset. Therefore, they are not relevant | |
2211 | anymore and fields are interchangeable provided that they | |
2212 | represent the same access. */ | |
2213 | || (TREE_CODE (offset1) == PLACEHOLDER_EXPR | |
2214 | && TREE_CODE (offset2) == PLACEHOLDER_EXPR | |
2215 | && (DECL_SIZE (f1) == DECL_SIZE (f2) | |
2216 | || (TREE_CODE (DECL_SIZE (f1)) == PLACEHOLDER_EXPR | |
2217 | && TREE_CODE (DECL_SIZE (f2)) == PLACEHOLDER_EXPR) | |
2218 | || operand_equal_p (DECL_SIZE (f1), DECL_SIZE (f2), 0)) | |
2219 | && DECL_ALIGN (f1) == DECL_ALIGN (f2)) | |
2220 | || operand_equal_p (offset1, offset2, 0)) | |
2221 | && tree_int_cst_equal (DECL_FIELD_BIT_OFFSET (f1), | |
2222 | DECL_FIELD_BIT_OFFSET (f2))); | |
2223 | } | |
d7f09764 DN |
2224 | |
2225 | /* Fortran and C do not always agree on what DECL_OFFSET_ALIGN | |
2226 | should be, so handle differing ones specially by decomposing | |
2227 | the offset into a byte and bit offset manually. */ | |
9541ffee RS |
2228 | if (tree_fits_shwi_p (DECL_FIELD_OFFSET (f1)) |
2229 | && tree_fits_shwi_p (DECL_FIELD_OFFSET (f2))) | |
d7f09764 DN |
2230 | { |
2231 | unsigned HOST_WIDE_INT byte_offset1, byte_offset2; | |
2232 | unsigned HOST_WIDE_INT bit_offset1, bit_offset2; | |
2233 | bit_offset1 = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f1)); | |
2234 | byte_offset1 = (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f1)) | |
2235 | + bit_offset1 / BITS_PER_UNIT); | |
2236 | bit_offset2 = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (f2)); | |
2237 | byte_offset2 = (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (f2)) | |
2238 | + bit_offset2 / BITS_PER_UNIT); | |
2239 | if (byte_offset1 != byte_offset2) | |
2240 | return false; | |
2241 | return bit_offset1 % BITS_PER_UNIT == bit_offset2 % BITS_PER_UNIT; | |
2242 | } | |
2243 | ||
2244 | return false; | |
2245 | } | |
2246 | ||
d7f09764 DN |
2247 | |
2248 | /* Return a type the same as TYPE except unsigned or | |
2249 | signed according to UNSIGNEDP. */ | |
2250 | ||
2251 | static tree | |
2252 | gimple_signed_or_unsigned_type (bool unsignedp, tree type) | |
2253 | { | |
2254 | tree type1; | |
78a7c317 | 2255 | int i; |
d7f09764 DN |
2256 | |
2257 | type1 = TYPE_MAIN_VARIANT (type); | |
2258 | if (type1 == signed_char_type_node | |
2259 | || type1 == char_type_node | |
2260 | || type1 == unsigned_char_type_node) | |
2261 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
2262 | if (type1 == integer_type_node || type1 == unsigned_type_node) | |
2263 | return unsignedp ? unsigned_type_node : integer_type_node; | |
2264 | if (type1 == short_integer_type_node || type1 == short_unsigned_type_node) | |
2265 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
2266 | if (type1 == long_integer_type_node || type1 == long_unsigned_type_node) | |
2267 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
2268 | if (type1 == long_long_integer_type_node | |
2269 | || type1 == long_long_unsigned_type_node) | |
2270 | return unsignedp | |
2271 | ? long_long_unsigned_type_node | |
2272 | : long_long_integer_type_node; | |
78a7c317 DD |
2273 | |
2274 | for (i = 0; i < NUM_INT_N_ENTS; i ++) | |
2275 | if (int_n_enabled_p[i] | |
2276 | && (type1 == int_n_trees[i].unsigned_type | |
2277 | || type1 == int_n_trees[i].signed_type)) | |
2278 | return unsignedp | |
2279 | ? int_n_trees[i].unsigned_type | |
2280 | : int_n_trees[i].signed_type; | |
2281 | ||
d7f09764 DN |
2282 | #if HOST_BITS_PER_WIDE_INT >= 64 |
2283 | if (type1 == intTI_type_node || type1 == unsigned_intTI_type_node) | |
2284 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
2285 | #endif | |
2286 | if (type1 == intDI_type_node || type1 == unsigned_intDI_type_node) | |
2287 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
2288 | if (type1 == intSI_type_node || type1 == unsigned_intSI_type_node) | |
2289 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
2290 | if (type1 == intHI_type_node || type1 == unsigned_intHI_type_node) | |
2291 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
2292 | if (type1 == intQI_type_node || type1 == unsigned_intQI_type_node) | |
2293 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
2294 | ||
2295 | #define GIMPLE_FIXED_TYPES(NAME) \ | |
2296 | if (type1 == short_ ## NAME ## _type_node \ | |
2297 | || type1 == unsigned_short_ ## NAME ## _type_node) \ | |
2298 | return unsignedp ? unsigned_short_ ## NAME ## _type_node \ | |
2299 | : short_ ## NAME ## _type_node; \ | |
2300 | if (type1 == NAME ## _type_node \ | |
2301 | || type1 == unsigned_ ## NAME ## _type_node) \ | |
2302 | return unsignedp ? unsigned_ ## NAME ## _type_node \ | |
2303 | : NAME ## _type_node; \ | |
2304 | if (type1 == long_ ## NAME ## _type_node \ | |
2305 | || type1 == unsigned_long_ ## NAME ## _type_node) \ | |
2306 | return unsignedp ? unsigned_long_ ## NAME ## _type_node \ | |
2307 | : long_ ## NAME ## _type_node; \ | |
2308 | if (type1 == long_long_ ## NAME ## _type_node \ | |
2309 | || type1 == unsigned_long_long_ ## NAME ## _type_node) \ | |
2310 | return unsignedp ? unsigned_long_long_ ## NAME ## _type_node \ | |
2311 | : long_long_ ## NAME ## _type_node; | |
2312 | ||
2313 | #define GIMPLE_FIXED_MODE_TYPES(NAME) \ | |
2314 | if (type1 == NAME ## _type_node \ | |
2315 | || type1 == u ## NAME ## _type_node) \ | |
2316 | return unsignedp ? u ## NAME ## _type_node \ | |
2317 | : NAME ## _type_node; | |
2318 | ||
2319 | #define GIMPLE_FIXED_TYPES_SAT(NAME) \ | |
2320 | if (type1 == sat_ ## short_ ## NAME ## _type_node \ | |
2321 | || type1 == sat_ ## unsigned_short_ ## NAME ## _type_node) \ | |
2322 | return unsignedp ? sat_ ## unsigned_short_ ## NAME ## _type_node \ | |
2323 | : sat_ ## short_ ## NAME ## _type_node; \ | |
2324 | if (type1 == sat_ ## NAME ## _type_node \ | |
2325 | || type1 == sat_ ## unsigned_ ## NAME ## _type_node) \ | |
2326 | return unsignedp ? sat_ ## unsigned_ ## NAME ## _type_node \ | |
2327 | : sat_ ## NAME ## _type_node; \ | |
2328 | if (type1 == sat_ ## long_ ## NAME ## _type_node \ | |
2329 | || type1 == sat_ ## unsigned_long_ ## NAME ## _type_node) \ | |
2330 | return unsignedp ? sat_ ## unsigned_long_ ## NAME ## _type_node \ | |
2331 | : sat_ ## long_ ## NAME ## _type_node; \ | |
2332 | if (type1 == sat_ ## long_long_ ## NAME ## _type_node \ | |
2333 | || type1 == sat_ ## unsigned_long_long_ ## NAME ## _type_node) \ | |
2334 | return unsignedp ? sat_ ## unsigned_long_long_ ## NAME ## _type_node \ | |
2335 | : sat_ ## long_long_ ## NAME ## _type_node; | |
2336 | ||
2337 | #define GIMPLE_FIXED_MODE_TYPES_SAT(NAME) \ | |
2338 | if (type1 == sat_ ## NAME ## _type_node \ | |
2339 | || type1 == sat_ ## u ## NAME ## _type_node) \ | |
2340 | return unsignedp ? sat_ ## u ## NAME ## _type_node \ | |
2341 | : sat_ ## NAME ## _type_node; | |
2342 | ||
2343 | GIMPLE_FIXED_TYPES (fract); | |
2344 | GIMPLE_FIXED_TYPES_SAT (fract); | |
2345 | GIMPLE_FIXED_TYPES (accum); | |
2346 | GIMPLE_FIXED_TYPES_SAT (accum); | |
2347 | ||
2348 | GIMPLE_FIXED_MODE_TYPES (qq); | |
2349 | GIMPLE_FIXED_MODE_TYPES (hq); | |
2350 | GIMPLE_FIXED_MODE_TYPES (sq); | |
2351 | GIMPLE_FIXED_MODE_TYPES (dq); | |
2352 | GIMPLE_FIXED_MODE_TYPES (tq); | |
2353 | GIMPLE_FIXED_MODE_TYPES_SAT (qq); | |
2354 | GIMPLE_FIXED_MODE_TYPES_SAT (hq); | |
2355 | GIMPLE_FIXED_MODE_TYPES_SAT (sq); | |
2356 | GIMPLE_FIXED_MODE_TYPES_SAT (dq); | |
2357 | GIMPLE_FIXED_MODE_TYPES_SAT (tq); | |
2358 | GIMPLE_FIXED_MODE_TYPES (ha); | |
2359 | GIMPLE_FIXED_MODE_TYPES (sa); | |
2360 | GIMPLE_FIXED_MODE_TYPES (da); | |
2361 | GIMPLE_FIXED_MODE_TYPES (ta); | |
2362 | GIMPLE_FIXED_MODE_TYPES_SAT (ha); | |
2363 | GIMPLE_FIXED_MODE_TYPES_SAT (sa); | |
2364 | GIMPLE_FIXED_MODE_TYPES_SAT (da); | |
2365 | GIMPLE_FIXED_MODE_TYPES_SAT (ta); | |
2366 | ||
2367 | /* For ENUMERAL_TYPEs in C++, must check the mode of the types, not | |
2368 | the precision; they have precision set to match their range, but | |
2369 | may use a wider mode to match an ABI. If we change modes, we may | |
2370 | wind up with bad conversions. For INTEGER_TYPEs in C, must check | |
2371 | the precision as well, so as to yield correct results for | |
2372 | bit-field types. C++ does not have these separate bit-field | |
2373 | types, and producing a signed or unsigned variant of an | |
2374 | ENUMERAL_TYPE may cause other problems as well. */ | |
2375 | if (!INTEGRAL_TYPE_P (type) | |
2376 | || TYPE_UNSIGNED (type) == unsignedp) | |
2377 | return type; | |
2378 | ||
2379 | #define TYPE_OK(node) \ | |
2380 | (TYPE_MODE (type) == TYPE_MODE (node) \ | |
2381 | && TYPE_PRECISION (type) == TYPE_PRECISION (node)) | |
2382 | if (TYPE_OK (signed_char_type_node)) | |
2383 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
2384 | if (TYPE_OK (integer_type_node)) | |
2385 | return unsignedp ? unsigned_type_node : integer_type_node; | |
2386 | if (TYPE_OK (short_integer_type_node)) | |
2387 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
2388 | if (TYPE_OK (long_integer_type_node)) | |
2389 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
2390 | if (TYPE_OK (long_long_integer_type_node)) | |
2391 | return (unsignedp | |
2392 | ? long_long_unsigned_type_node | |
2393 | : long_long_integer_type_node); | |
78a7c317 DD |
2394 | |
2395 | for (i = 0; i < NUM_INT_N_ENTS; i ++) | |
2396 | if (int_n_enabled_p[i] | |
2397 | && TYPE_MODE (type) == int_n_data[i].m | |
2398 | && TYPE_PRECISION (type) == int_n_data[i].bitsize) | |
2399 | return unsignedp | |
2400 | ? int_n_trees[i].unsigned_type | |
2401 | : int_n_trees[i].signed_type; | |
d7f09764 DN |
2402 | |
2403 | #if HOST_BITS_PER_WIDE_INT >= 64 | |
2404 | if (TYPE_OK (intTI_type_node)) | |
2405 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
2406 | #endif | |
2407 | if (TYPE_OK (intDI_type_node)) | |
2408 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
2409 | if (TYPE_OK (intSI_type_node)) | |
2410 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
2411 | if (TYPE_OK (intHI_type_node)) | |
2412 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
2413 | if (TYPE_OK (intQI_type_node)) | |
2414 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
2415 | ||
2416 | #undef GIMPLE_FIXED_TYPES | |
2417 | #undef GIMPLE_FIXED_MODE_TYPES | |
2418 | #undef GIMPLE_FIXED_TYPES_SAT | |
2419 | #undef GIMPLE_FIXED_MODE_TYPES_SAT | |
2420 | #undef TYPE_OK | |
2421 | ||
2422 | return build_nonstandard_integer_type (TYPE_PRECISION (type), unsignedp); | |
2423 | } | |
2424 | ||
2425 | ||
2426 | /* Return an unsigned type the same as TYPE in other respects. */ | |
2427 | ||
2428 | tree | |
2429 | gimple_unsigned_type (tree type) | |
2430 | { | |
2431 | return gimple_signed_or_unsigned_type (true, type); | |
2432 | } | |
2433 | ||
2434 | ||
2435 | /* Return a signed type the same as TYPE in other respects. */ | |
2436 | ||
2437 | tree | |
2438 | gimple_signed_type (tree type) | |
2439 | { | |
2440 | return gimple_signed_or_unsigned_type (false, type); | |
2441 | } | |
2442 | ||
2443 | ||
2444 | /* Return the typed-based alias set for T, which may be an expression | |
2445 | or a type. Return -1 if we don't do anything special. */ | |
2446 | ||
2447 | alias_set_type | |
2448 | gimple_get_alias_set (tree t) | |
2449 | { | |
d7f09764 DN |
2450 | /* That's all the expressions we handle specially. */ |
2451 | if (!TYPE_P (t)) | |
2452 | return -1; | |
2453 | ||
2454 | /* For convenience, follow the C standard when dealing with | |
2455 | character types. Any object may be accessed via an lvalue that | |
2456 | has character type. */ | |
2457 | if (t == char_type_node | |
2458 | || t == signed_char_type_node | |
2459 | || t == unsigned_char_type_node) | |
2460 | return 0; | |
2461 | ||
2462 | /* Allow aliasing between signed and unsigned variants of the same | |
2463 | type. We treat the signed variant as canonical. */ | |
2464 | if (TREE_CODE (t) == INTEGER_TYPE && TYPE_UNSIGNED (t)) | |
2465 | { | |
2466 | tree t1 = gimple_signed_type (t); | |
2467 | ||
2468 | /* t1 == t can happen for boolean nodes which are always unsigned. */ | |
2469 | if (t1 != t) | |
2470 | return get_alias_set (t1); | |
2471 | } | |
d7f09764 DN |
2472 | |
2473 | return -1; | |
2474 | } | |
2475 | ||
2476 | ||
ccacdf06 RG |
2477 | /* Helper for gimple_ior_addresses_taken_1. */ |
2478 | ||
2479 | static bool | |
355fe088 | 2480 | gimple_ior_addresses_taken_1 (gimple *, tree addr, tree, void *data) |
ccacdf06 RG |
2481 | { |
2482 | bitmap addresses_taken = (bitmap)data; | |
2ea9dc64 RG |
2483 | addr = get_base_address (addr); |
2484 | if (addr | |
2485 | && DECL_P (addr)) | |
ccacdf06 RG |
2486 | { |
2487 | bitmap_set_bit (addresses_taken, DECL_UID (addr)); | |
2488 | return true; | |
2489 | } | |
2490 | return false; | |
2491 | } | |
2492 | ||
2493 | /* Set the bit for the uid of all decls that have their address taken | |
2494 | in STMT in the ADDRESSES_TAKEN bitmap. Returns true if there | |
2495 | were any in this stmt. */ | |
2496 | ||
2497 | bool | |
355fe088 | 2498 | gimple_ior_addresses_taken (bitmap addresses_taken, gimple *stmt) |
ccacdf06 RG |
2499 | { |
2500 | return walk_stmt_load_store_addr_ops (stmt, addresses_taken, NULL, NULL, | |
2501 | gimple_ior_addresses_taken_1); | |
2502 | } | |
2503 | ||
4537ec0c | 2504 | |
5c944c6c RB |
2505 | /* Return true when STMTs arguments and return value match those of FNDECL, |
2506 | a decl of a builtin function. */ | |
3626621a | 2507 | |
5c944c6c | 2508 | bool |
355fe088 | 2509 | gimple_builtin_call_types_compatible_p (const gimple *stmt, tree fndecl) |
3626621a | 2510 | { |
5c944c6c RB |
2511 | gcc_checking_assert (DECL_BUILT_IN_CLASS (fndecl) != NOT_BUILT_IN); |
2512 | ||
2513 | tree ret = gimple_call_lhs (stmt); | |
2514 | if (ret | |
2ad3adf1 JJ |
2515 | && !useless_type_conversion_p (TREE_TYPE (ret), |
2516 | TREE_TYPE (TREE_TYPE (fndecl)))) | |
5c944c6c RB |
2517 | return false; |
2518 | ||
3626621a RB |
2519 | tree targs = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
2520 | unsigned nargs = gimple_call_num_args (stmt); | |
2521 | for (unsigned i = 0; i < nargs; ++i) | |
2522 | { | |
2523 | /* Variadic args follow. */ | |
2524 | if (!targs) | |
2525 | return true; | |
2526 | tree arg = gimple_call_arg (stmt, i); | |
fd39794a JJ |
2527 | tree type = TREE_VALUE (targs); |
2528 | if (!useless_type_conversion_p (type, TREE_TYPE (arg)) | |
2529 | /* char/short integral arguments are promoted to int | |
2530 | by several frontends if targetm.calls.promote_prototypes | |
2531 | is true. Allow such promotion too. */ | |
2532 | && !(INTEGRAL_TYPE_P (type) | |
2533 | && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node) | |
2534 | && targetm.calls.promote_prototypes (TREE_TYPE (fndecl)) | |
2535 | && useless_type_conversion_p (integer_type_node, | |
2536 | TREE_TYPE (arg)))) | |
3626621a RB |
2537 | return false; |
2538 | targs = TREE_CHAIN (targs); | |
2539 | } | |
2540 | if (targs && !VOID_TYPE_P (TREE_VALUE (targs))) | |
2541 | return false; | |
2542 | return true; | |
2543 | } | |
2544 | ||
5c944c6c RB |
2545 | /* Return true when STMT is builtins call. */ |
2546 | ||
2547 | bool | |
355fe088 | 2548 | gimple_call_builtin_p (const gimple *stmt) |
5c944c6c RB |
2549 | { |
2550 | tree fndecl; | |
2551 | if (is_gimple_call (stmt) | |
2552 | && (fndecl = gimple_call_fndecl (stmt)) != NULL_TREE | |
2553 | && DECL_BUILT_IN_CLASS (fndecl) != NOT_BUILT_IN) | |
2554 | return gimple_builtin_call_types_compatible_p (stmt, fndecl); | |
2555 | return false; | |
2556 | } | |
2557 | ||
3626621a RB |
2558 | /* Return true when STMT is builtins call to CLASS. */ |
2559 | ||
2560 | bool | |
355fe088 | 2561 | gimple_call_builtin_p (const gimple *stmt, enum built_in_class klass) |
3626621a RB |
2562 | { |
2563 | tree fndecl; | |
2564 | if (is_gimple_call (stmt) | |
2565 | && (fndecl = gimple_call_fndecl (stmt)) != NULL_TREE | |
2566 | && DECL_BUILT_IN_CLASS (fndecl) == klass) | |
5c944c6c | 2567 | return gimple_builtin_call_types_compatible_p (stmt, fndecl); |
3626621a RB |
2568 | return false; |
2569 | } | |
2570 | ||
2571 | /* Return true when STMT is builtins call to CODE of CLASS. */ | |
c54c785d JH |
2572 | |
2573 | bool | |
355fe088 | 2574 | gimple_call_builtin_p (const gimple *stmt, enum built_in_function code) |
c54c785d JH |
2575 | { |
2576 | tree fndecl; | |
3626621a RB |
2577 | if (is_gimple_call (stmt) |
2578 | && (fndecl = gimple_call_fndecl (stmt)) != NULL_TREE | |
2579 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
2580 | && DECL_FUNCTION_CODE (fndecl) == code) | |
5c944c6c | 2581 | return gimple_builtin_call_types_compatible_p (stmt, fndecl); |
3626621a | 2582 | return false; |
c54c785d JH |
2583 | } |
2584 | ||
00175cb2 RS |
2585 | /* If CALL is a call to a combined_fn (i.e. an internal function or |
2586 | a normal built-in function), return its code, otherwise return | |
2587 | CFN_LAST. */ | |
2588 | ||
2589 | combined_fn | |
2590 | gimple_call_combined_fn (const gimple *stmt) | |
2591 | { | |
2592 | if (const gcall *call = dyn_cast <const gcall *> (stmt)) | |
2593 | { | |
2594 | if (gimple_call_internal_p (call)) | |
2595 | return as_combined_fn (gimple_call_internal_fn (call)); | |
2596 | ||
2597 | tree fndecl = gimple_call_fndecl (stmt); | |
2598 | if (fndecl | |
2599 | && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL | |
2600 | && gimple_builtin_call_types_compatible_p (stmt, fndecl)) | |
2601 | return as_combined_fn (DECL_FUNCTION_CODE (fndecl)); | |
2602 | } | |
2603 | return CFN_LAST; | |
2604 | } | |
2605 | ||
edcdea5b NF |
2606 | /* Return true if STMT clobbers memory. STMT is required to be a |
2607 | GIMPLE_ASM. */ | |
2608 | ||
2609 | bool | |
538dd0b7 | 2610 | gimple_asm_clobbers_memory_p (const gasm *stmt) |
edcdea5b NF |
2611 | { |
2612 | unsigned i; | |
2613 | ||
2614 | for (i = 0; i < gimple_asm_nclobbers (stmt); i++) | |
2615 | { | |
2616 | tree op = gimple_asm_clobber_op (stmt, i); | |
2617 | if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op)), "memory") == 0) | |
2618 | return true; | |
2619 | } | |
2620 | ||
93671519 BE |
2621 | /* Non-empty basic ASM implicitly clobbers memory. */ |
2622 | if (gimple_asm_input_p (stmt) && strlen (gimple_asm_string (stmt)) != 0) | |
2623 | return true; | |
2624 | ||
edcdea5b NF |
2625 | return false; |
2626 | } | |
475b8f37 | 2627 | |
80560f95 AM |
2628 | /* Dump bitmap SET (assumed to contain VAR_DECLs) to FILE. */ |
2629 | ||
2630 | void | |
2631 | dump_decl_set (FILE *file, bitmap set) | |
2632 | { | |
2633 | if (set) | |
2634 | { | |
2635 | bitmap_iterator bi; | |
2636 | unsigned i; | |
2637 | ||
2638 | fprintf (file, "{ "); | |
2639 | ||
2640 | EXECUTE_IF_SET_IN_BITMAP (set, 0, i, bi) | |
2641 | { | |
2642 | fprintf (file, "D.%u", i); | |
2643 | fprintf (file, " "); | |
2644 | } | |
2645 | ||
2646 | fprintf (file, "}"); | |
2647 | } | |
2648 | else | |
2649 | fprintf (file, "NIL"); | |
2650 | } | |
7a300452 | 2651 | |
3d9c733e AM |
2652 | /* Return true when CALL is a call stmt that definitely doesn't |
2653 | free any memory or makes it unavailable otherwise. */ | |
2654 | bool | |
355fe088 | 2655 | nonfreeing_call_p (gimple *call) |
3d9c733e AM |
2656 | { |
2657 | if (gimple_call_builtin_p (call, BUILT_IN_NORMAL) | |
2658 | && gimple_call_flags (call) & ECF_LEAF) | |
2659 | switch (DECL_FUNCTION_CODE (gimple_call_fndecl (call))) | |
2660 | { | |
2661 | /* Just in case these become ECF_LEAF in the future. */ | |
2662 | case BUILT_IN_FREE: | |
2663 | case BUILT_IN_TM_FREE: | |
2664 | case BUILT_IN_REALLOC: | |
2665 | case BUILT_IN_STACK_RESTORE: | |
2666 | return false; | |
2667 | default: | |
2668 | return true; | |
2669 | } | |
8413ca87 JJ |
2670 | else if (gimple_call_internal_p (call)) |
2671 | switch (gimple_call_internal_fn (call)) | |
2672 | { | |
2673 | case IFN_ABNORMAL_DISPATCHER: | |
2674 | return true; | |
6dc4a604 | 2675 | case IFN_ASAN_MARK: |
56b7aede | 2676 | return tree_to_uhwi (gimple_call_arg (call, 0)) == ASAN_MARK_UNPOISON; |
8413ca87 JJ |
2677 | default: |
2678 | if (gimple_call_flags (call) & ECF_LEAF) | |
2679 | return true; | |
2680 | return false; | |
2681 | } | |
3d9c733e | 2682 | |
8413ca87 JJ |
2683 | tree fndecl = gimple_call_fndecl (call); |
2684 | if (!fndecl) | |
2685 | return false; | |
2686 | struct cgraph_node *n = cgraph_node::get (fndecl); | |
2687 | if (!n) | |
2688 | return false; | |
2689 | enum availability availability; | |
2690 | n = n->function_symbol (&availability); | |
2691 | if (!n || availability <= AVAIL_INTERPOSABLE) | |
2692 | return false; | |
2693 | return n->nonfreeing_fn; | |
3d9c733e | 2694 | } |
8fdc414d | 2695 | |
c000cd7c BS |
2696 | /* Return true when CALL is a call stmt that definitely need not |
2697 | be considered to be a memory barrier. */ | |
2698 | bool | |
2699 | nonbarrier_call_p (gimple *call) | |
2700 | { | |
2701 | if (gimple_call_flags (call) & (ECF_PURE | ECF_CONST)) | |
2702 | return true; | |
2703 | /* Should extend this to have a nonbarrier_fn flag, just as above in | |
2704 | the nonfreeing case. */ | |
2705 | return false; | |
2706 | } | |
2707 | ||
8fdc414d JL |
2708 | /* Callback for walk_stmt_load_store_ops. |
2709 | ||
2710 | Return TRUE if OP will dereference the tree stored in DATA, FALSE | |
2711 | otherwise. | |
2712 | ||
2713 | This routine only makes a superficial check for a dereference. Thus | |
2714 | it must only be used if it is safe to return a false negative. */ | |
2715 | static bool | |
355fe088 | 2716 | check_loadstore (gimple *, tree op, tree, void *data) |
8fdc414d | 2717 | { |
6626f970 RH |
2718 | if (TREE_CODE (op) == MEM_REF || TREE_CODE (op) == TARGET_MEM_REF) |
2719 | { | |
2720 | /* Some address spaces may legitimately dereference zero. */ | |
2721 | addr_space_t as = TYPE_ADDR_SPACE (TREE_TYPE (op)); | |
2722 | if (targetm.addr_space.zero_address_valid (as)) | |
2723 | return false; | |
2724 | ||
2725 | return operand_equal_p (TREE_OPERAND (op, 0), (tree)data, 0); | |
2726 | } | |
8fdc414d JL |
2727 | return false; |
2728 | } | |
2729 | ||
ae93744d | 2730 | |
76787f70 MLI |
2731 | /* Return true if OP can be inferred to be non-NULL after STMT executes, |
2732 | either by using a pointer dereference or attributes. */ | |
2733 | bool | |
355fe088 | 2734 | infer_nonnull_range (gimple *stmt, tree op) |
76787f70 MLI |
2735 | { |
2736 | return infer_nonnull_range_by_dereference (stmt, op) | |
2737 | || infer_nonnull_range_by_attribute (stmt, op); | |
2738 | } | |
8fdc414d | 2739 | |
76787f70 MLI |
2740 | /* Return true if OP can be inferred to be non-NULL after STMT |
2741 | executes by using a pointer dereference. */ | |
8fdc414d | 2742 | bool |
355fe088 | 2743 | infer_nonnull_range_by_dereference (gimple *stmt, tree op) |
8fdc414d JL |
2744 | { |
2745 | /* We can only assume that a pointer dereference will yield | |
2746 | non-NULL if -fdelete-null-pointer-checks is enabled. */ | |
2747 | if (!flag_delete_null_pointer_checks | |
2748 | || !POINTER_TYPE_P (TREE_TYPE (op)) | |
2749 | || gimple_code (stmt) == GIMPLE_ASM) | |
2750 | return false; | |
2751 | ||
76787f70 MLI |
2752 | if (walk_stmt_load_store_ops (stmt, (void *)op, |
2753 | check_loadstore, check_loadstore)) | |
8fdc414d JL |
2754 | return true; |
2755 | ||
76787f70 MLI |
2756 | return false; |
2757 | } | |
2758 | ||
2759 | /* Return true if OP can be inferred to be a non-NULL after STMT | |
2760 | executes by using attributes. */ | |
2761 | bool | |
355fe088 | 2762 | infer_nonnull_range_by_attribute (gimple *stmt, tree op) |
76787f70 MLI |
2763 | { |
2764 | /* We can only assume that a pointer dereference will yield | |
2765 | non-NULL if -fdelete-null-pointer-checks is enabled. */ | |
2766 | if (!flag_delete_null_pointer_checks | |
2767 | || !POINTER_TYPE_P (TREE_TYPE (op)) | |
2768 | || gimple_code (stmt) == GIMPLE_ASM) | |
2769 | return false; | |
2770 | ||
2771 | if (is_gimple_call (stmt) && !gimple_call_internal_p (stmt)) | |
8fdc414d JL |
2772 | { |
2773 | tree fntype = gimple_call_fntype (stmt); | |
2774 | tree attrs = TYPE_ATTRIBUTES (fntype); | |
2775 | for (; attrs; attrs = TREE_CHAIN (attrs)) | |
2776 | { | |
2777 | attrs = lookup_attribute ("nonnull", attrs); | |
2778 | ||
2779 | /* If "nonnull" wasn't specified, we know nothing about | |
2780 | the argument. */ | |
2781 | if (attrs == NULL_TREE) | |
2782 | return false; | |
2783 | ||
2784 | /* If "nonnull" applies to all the arguments, then ARG | |
2785 | is non-null if it's in the argument list. */ | |
2786 | if (TREE_VALUE (attrs) == NULL_TREE) | |
2787 | { | |
2788 | for (unsigned int i = 0; i < gimple_call_num_args (stmt); i++) | |
2789 | { | |
36f291f7 PP |
2790 | if (POINTER_TYPE_P (TREE_TYPE (gimple_call_arg (stmt, i))) |
2791 | && operand_equal_p (op, gimple_call_arg (stmt, i), 0)) | |
8fdc414d JL |
2792 | return true; |
2793 | } | |
2794 | return false; | |
2795 | } | |
2796 | ||
2797 | /* Now see if op appears in the nonnull list. */ | |
2798 | for (tree t = TREE_VALUE (attrs); t; t = TREE_CHAIN (t)) | |
2799 | { | |
e37dcf45 MP |
2800 | unsigned int idx = TREE_INT_CST_LOW (TREE_VALUE (t)) - 1; |
2801 | if (idx < gimple_call_num_args (stmt)) | |
2802 | { | |
2803 | tree arg = gimple_call_arg (stmt, idx); | |
2804 | if (operand_equal_p (op, arg, 0)) | |
2805 | return true; | |
2806 | } | |
8fdc414d JL |
2807 | } |
2808 | } | |
2809 | } | |
2810 | ||
2811 | /* If this function is marked as returning non-null, then we can | |
2812 | infer OP is non-null if it is used in the return statement. */ | |
76787f70 MLI |
2813 | if (greturn *return_stmt = dyn_cast <greturn *> (stmt)) |
2814 | if (gimple_return_retval (return_stmt) | |
2815 | && operand_equal_p (gimple_return_retval (return_stmt), op, 0) | |
2816 | && lookup_attribute ("returns_nonnull", | |
2817 | TYPE_ATTRIBUTES (TREE_TYPE (current_function_decl)))) | |
2818 | return true; | |
8fdc414d JL |
2819 | |
2820 | return false; | |
2821 | } | |
45b0be94 AM |
2822 | |
2823 | /* Compare two case labels. Because the front end should already have | |
2824 | made sure that case ranges do not overlap, it is enough to only compare | |
2825 | the CASE_LOW values of each case label. */ | |
2826 | ||
2827 | static int | |
2828 | compare_case_labels (const void *p1, const void *p2) | |
2829 | { | |
2830 | const_tree const case1 = *(const_tree const*)p1; | |
2831 | const_tree const case2 = *(const_tree const*)p2; | |
2832 | ||
2833 | /* The 'default' case label always goes first. */ | |
2834 | if (!CASE_LOW (case1)) | |
2835 | return -1; | |
2836 | else if (!CASE_LOW (case2)) | |
2837 | return 1; | |
2838 | else | |
2839 | return tree_int_cst_compare (CASE_LOW (case1), CASE_LOW (case2)); | |
2840 | } | |
2841 | ||
2842 | /* Sort the case labels in LABEL_VEC in place in ascending order. */ | |
2843 | ||
2844 | void | |
2845 | sort_case_labels (vec<tree> label_vec) | |
2846 | { | |
2847 | label_vec.qsort (compare_case_labels); | |
2848 | } | |
2849 | \f | |
2850 | /* Prepare a vector of case labels to be used in a GIMPLE_SWITCH statement. | |
2851 | ||
2852 | LABELS is a vector that contains all case labels to look at. | |
2853 | ||
2854 | INDEX_TYPE is the type of the switch index expression. Case labels | |
2855 | in LABELS are discarded if their values are not in the value range | |
2856 | covered by INDEX_TYPE. The remaining case label values are folded | |
2857 | to INDEX_TYPE. | |
2858 | ||
2859 | If a default case exists in LABELS, it is removed from LABELS and | |
2860 | returned in DEFAULT_CASEP. If no default case exists, but the | |
2861 | case labels already cover the whole range of INDEX_TYPE, a default | |
2862 | case is returned pointing to one of the existing case labels. | |
2863 | Otherwise DEFAULT_CASEP is set to NULL_TREE. | |
2864 | ||
2865 | DEFAULT_CASEP may be NULL, in which case the above comment doesn't | |
2866 | apply and no action is taken regardless of whether a default case is | |
2867 | found or not. */ | |
2868 | ||
2869 | void | |
2870 | preprocess_case_label_vec_for_gimple (vec<tree> labels, | |
2871 | tree index_type, | |
2872 | tree *default_casep) | |
2873 | { | |
2874 | tree min_value, max_value; | |
2875 | tree default_case = NULL_TREE; | |
2876 | size_t i, len; | |
2877 | ||
2878 | i = 0; | |
2879 | min_value = TYPE_MIN_VALUE (index_type); | |
2880 | max_value = TYPE_MAX_VALUE (index_type); | |
2881 | while (i < labels.length ()) | |
2882 | { | |
2883 | tree elt = labels[i]; | |
2884 | tree low = CASE_LOW (elt); | |
2885 | tree high = CASE_HIGH (elt); | |
2886 | bool remove_element = FALSE; | |
2887 | ||
2888 | if (low) | |
2889 | { | |
2890 | gcc_checking_assert (TREE_CODE (low) == INTEGER_CST); | |
2891 | gcc_checking_assert (!high || TREE_CODE (high) == INTEGER_CST); | |
2892 | ||
2893 | /* This is a non-default case label, i.e. it has a value. | |
2894 | ||
2895 | See if the case label is reachable within the range of | |
2896 | the index type. Remove out-of-range case values. Turn | |
2897 | case ranges into a canonical form (high > low strictly) | |
2898 | and convert the case label values to the index type. | |
2899 | ||
2900 | NB: The type of gimple_switch_index() may be the promoted | |
2901 | type, but the case labels retain the original type. */ | |
2902 | ||
2903 | if (high) | |
2904 | { | |
2905 | /* This is a case range. Discard empty ranges. | |
2906 | If the bounds or the range are equal, turn this | |
2907 | into a simple (one-value) case. */ | |
2908 | int cmp = tree_int_cst_compare (high, low); | |
2909 | if (cmp < 0) | |
2910 | remove_element = TRUE; | |
2911 | else if (cmp == 0) | |
2912 | high = NULL_TREE; | |
2913 | } | |
2914 | ||
2915 | if (! high) | |
2916 | { | |
2917 | /* If the simple case value is unreachable, ignore it. */ | |
2918 | if ((TREE_CODE (min_value) == INTEGER_CST | |
2919 | && tree_int_cst_compare (low, min_value) < 0) | |
2920 | || (TREE_CODE (max_value) == INTEGER_CST | |
2921 | && tree_int_cst_compare (low, max_value) > 0)) | |
2922 | remove_element = TRUE; | |
2923 | else | |
2924 | low = fold_convert (index_type, low); | |
2925 | } | |
2926 | else | |
2927 | { | |
2928 | /* If the entire case range is unreachable, ignore it. */ | |
2929 | if ((TREE_CODE (min_value) == INTEGER_CST | |
2930 | && tree_int_cst_compare (high, min_value) < 0) | |
2931 | || (TREE_CODE (max_value) == INTEGER_CST | |
2932 | && tree_int_cst_compare (low, max_value) > 0)) | |
2933 | remove_element = TRUE; | |
2934 | else | |
2935 | { | |
2936 | /* If the lower bound is less than the index type's | |
2937 | minimum value, truncate the range bounds. */ | |
2938 | if (TREE_CODE (min_value) == INTEGER_CST | |
2939 | && tree_int_cst_compare (low, min_value) < 0) | |
2940 | low = min_value; | |
2941 | low = fold_convert (index_type, low); | |
2942 | ||
2943 | /* If the upper bound is greater than the index type's | |
2944 | maximum value, truncate the range bounds. */ | |
2945 | if (TREE_CODE (max_value) == INTEGER_CST | |
2946 | && tree_int_cst_compare (high, max_value) > 0) | |
2947 | high = max_value; | |
2948 | high = fold_convert (index_type, high); | |
2949 | ||
2950 | /* We may have folded a case range to a one-value case. */ | |
2951 | if (tree_int_cst_equal (low, high)) | |
2952 | high = NULL_TREE; | |
2953 | } | |
2954 | } | |
2955 | ||
2956 | CASE_LOW (elt) = low; | |
2957 | CASE_HIGH (elt) = high; | |
2958 | } | |
2959 | else | |
2960 | { | |
2961 | gcc_assert (!default_case); | |
2962 | default_case = elt; | |
2963 | /* The default case must be passed separately to the | |
2964 | gimple_build_switch routine. But if DEFAULT_CASEP | |
2965 | is NULL, we do not remove the default case (it would | |
2966 | be completely lost). */ | |
2967 | if (default_casep) | |
2968 | remove_element = TRUE; | |
2969 | } | |
2970 | ||
2971 | if (remove_element) | |
2972 | labels.ordered_remove (i); | |
2973 | else | |
2974 | i++; | |
2975 | } | |
2976 | len = i; | |
2977 | ||
2978 | if (!labels.is_empty ()) | |
2979 | sort_case_labels (labels); | |
2980 | ||
2981 | if (default_casep && !default_case) | |
2982 | { | |
2983 | /* If the switch has no default label, add one, so that we jump | |
2984 | around the switch body. If the labels already cover the whole | |
2985 | range of the switch index_type, add the default label pointing | |
2986 | to one of the existing labels. */ | |
2987 | if (len | |
2988 | && TYPE_MIN_VALUE (index_type) | |
2989 | && TYPE_MAX_VALUE (index_type) | |
2990 | && tree_int_cst_equal (CASE_LOW (labels[0]), | |
2991 | TYPE_MIN_VALUE (index_type))) | |
2992 | { | |
2993 | tree low, high = CASE_HIGH (labels[len - 1]); | |
2994 | if (!high) | |
2995 | high = CASE_LOW (labels[len - 1]); | |
2996 | if (tree_int_cst_equal (high, TYPE_MAX_VALUE (index_type))) | |
2997 | { | |
938da3a5 | 2998 | tree widest_label = labels[0]; |
45b0be94 AM |
2999 | for (i = 1; i < len; i++) |
3000 | { | |
3001 | high = CASE_LOW (labels[i]); | |
3002 | low = CASE_HIGH (labels[i - 1]); | |
3003 | if (!low) | |
3004 | low = CASE_LOW (labels[i - 1]); | |
938da3a5 PP |
3005 | |
3006 | if (CASE_HIGH (labels[i]) != NULL_TREE | |
3007 | && (CASE_HIGH (widest_label) == NULL_TREE | |
8e6cdc90 RS |
3008 | || (wi::gtu_p |
3009 | (wi::to_wide (CASE_HIGH (labels[i])) | |
3010 | - wi::to_wide (CASE_LOW (labels[i])), | |
3011 | wi::to_wide (CASE_HIGH (widest_label)) | |
3012 | - wi::to_wide (CASE_LOW (widest_label)))))) | |
938da3a5 PP |
3013 | widest_label = labels[i]; |
3014 | ||
8e6cdc90 | 3015 | if (wi::to_wide (low) + 1 != wi::to_wide (high)) |
45b0be94 AM |
3016 | break; |
3017 | } | |
3018 | if (i == len) | |
3019 | { | |
938da3a5 PP |
3020 | /* Designate the label with the widest range to be the |
3021 | default label. */ | |
3022 | tree label = CASE_LABEL (widest_label); | |
45b0be94 AM |
3023 | default_case = build_case_label (NULL_TREE, NULL_TREE, |
3024 | label); | |
3025 | } | |
3026 | } | |
3027 | } | |
3028 | } | |
3029 | ||
3030 | if (default_casep) | |
3031 | *default_casep = default_case; | |
3032 | } | |
5be5c238 AM |
3033 | |
3034 | /* Set the location of all statements in SEQ to LOC. */ | |
3035 | ||
3036 | void | |
3037 | gimple_seq_set_location (gimple_seq seq, location_t loc) | |
3038 | { | |
3039 | for (gimple_stmt_iterator i = gsi_start (seq); !gsi_end_p (i); gsi_next (&i)) | |
3040 | gimple_set_location (gsi_stmt (i), loc); | |
3041 | } | |
73049af5 JJ |
3042 | |
3043 | /* Release SSA_NAMEs in SEQ as well as the GIMPLE statements. */ | |
3044 | ||
3045 | void | |
3046 | gimple_seq_discard (gimple_seq seq) | |
3047 | { | |
3048 | gimple_stmt_iterator gsi; | |
3049 | ||
3050 | for (gsi = gsi_start (seq); !gsi_end_p (gsi); ) | |
3051 | { | |
355fe088 | 3052 | gimple *stmt = gsi_stmt (gsi); |
73049af5 JJ |
3053 | gsi_remove (&gsi, true); |
3054 | release_defs (stmt); | |
3055 | ggc_free (stmt); | |
3056 | } | |
3057 | } | |
0b986c6a JH |
3058 | |
3059 | /* See if STMT now calls function that takes no parameters and if so, drop | |
3060 | call arguments. This is used when devirtualization machinery redirects | |
538374e1 | 3061 | to __builtin_unreachable or __cxa_pure_virtual. */ |
0b986c6a JH |
3062 | |
3063 | void | |
355fe088 | 3064 | maybe_remove_unused_call_args (struct function *fn, gimple *stmt) |
0b986c6a JH |
3065 | { |
3066 | tree decl = gimple_call_fndecl (stmt); | |
3067 | if (TYPE_ARG_TYPES (TREE_TYPE (decl)) | |
3068 | && TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))) == void_type_node | |
3069 | && gimple_call_num_args (stmt)) | |
3070 | { | |
3071 | gimple_set_num_ops (stmt, 3); | |
3072 | update_stmt_fn (fn, stmt); | |
3073 | } | |
3074 | } | |
d9b950dd | 3075 | |
ce120587 JH |
3076 | /* Return false if STMT will likely expand to real function call. */ |
3077 | ||
3078 | bool | |
3079 | gimple_inexpensive_call_p (gcall *stmt) | |
3080 | { | |
3081 | if (gimple_call_internal_p (stmt)) | |
3082 | return true; | |
3083 | tree decl = gimple_call_fndecl (stmt); | |
3084 | if (decl && is_inexpensive_builtin (decl)) | |
3085 | return true; | |
3086 | return false; | |
3087 | } | |
3088 | ||
d9b950dd DM |
3089 | #if CHECKING_P |
3090 | ||
3091 | namespace selftest { | |
3092 | ||
3093 | /* Selftests for core gimple structures. */ | |
3094 | ||
3095 | /* Verify that STMT is pretty-printed as EXPECTED. | |
3096 | Helper function for selftests. */ | |
3097 | ||
3098 | static void | |
3099 | verify_gimple_pp (const char *expected, gimple *stmt) | |
3100 | { | |
3101 | pretty_printer pp; | |
3102 | pp_gimple_stmt_1 (&pp, stmt, 0 /* spc */, 0 /* flags */); | |
3103 | ASSERT_STREQ (expected, pp_formatted_text (&pp)); | |
3104 | } | |
3105 | ||
3106 | /* Build a GIMPLE_ASSIGN equivalent to | |
3107 | tmp = 5; | |
3108 | and verify various properties of it. */ | |
3109 | ||
3110 | static void | |
3111 | test_assign_single () | |
3112 | { | |
3113 | tree type = integer_type_node; | |
3114 | tree lhs = build_decl (UNKNOWN_LOCATION, VAR_DECL, | |
3115 | get_identifier ("tmp"), | |
3116 | type); | |
3117 | tree rhs = build_int_cst (type, 5); | |
3118 | gassign *stmt = gimple_build_assign (lhs, rhs); | |
3119 | verify_gimple_pp ("tmp = 5;", stmt); | |
3120 | ||
3121 | ASSERT_TRUE (is_gimple_assign (stmt)); | |
3122 | ASSERT_EQ (lhs, gimple_assign_lhs (stmt)); | |
3123 | ASSERT_EQ (lhs, gimple_get_lhs (stmt)); | |
3124 | ASSERT_EQ (rhs, gimple_assign_rhs1 (stmt)); | |
3125 | ASSERT_EQ (NULL, gimple_assign_rhs2 (stmt)); | |
3126 | ASSERT_EQ (NULL, gimple_assign_rhs3 (stmt)); | |
3127 | ASSERT_TRUE (gimple_assign_single_p (stmt)); | |
3128 | ASSERT_EQ (INTEGER_CST, gimple_assign_rhs_code (stmt)); | |
3129 | } | |
3130 | ||
3131 | /* Build a GIMPLE_ASSIGN equivalent to | |
3132 | tmp = a * b; | |
3133 | and verify various properties of it. */ | |
3134 | ||
3135 | static void | |
3136 | test_assign_binop () | |
3137 | { | |
3138 | tree type = integer_type_node; | |
3139 | tree lhs = build_decl (UNKNOWN_LOCATION, VAR_DECL, | |
3140 | get_identifier ("tmp"), | |
3141 | type); | |
3142 | tree a = build_decl (UNKNOWN_LOCATION, VAR_DECL, | |
3143 | get_identifier ("a"), | |
3144 | type); | |
3145 | tree b = build_decl (UNKNOWN_LOCATION, VAR_DECL, | |
3146 | get_identifier ("b"), | |
3147 | type); | |
3148 | gassign *stmt = gimple_build_assign (lhs, MULT_EXPR, a, b); | |
3149 | verify_gimple_pp ("tmp = a * b;", stmt); | |
3150 | ||
3151 | ASSERT_TRUE (is_gimple_assign (stmt)); | |
3152 | ASSERT_EQ (lhs, gimple_assign_lhs (stmt)); | |
3153 | ASSERT_EQ (lhs, gimple_get_lhs (stmt)); | |
3154 | ASSERT_EQ (a, gimple_assign_rhs1 (stmt)); | |
3155 | ASSERT_EQ (b, gimple_assign_rhs2 (stmt)); | |
3156 | ASSERT_EQ (NULL, gimple_assign_rhs3 (stmt)); | |
3157 | ASSERT_FALSE (gimple_assign_single_p (stmt)); | |
3158 | ASSERT_EQ (MULT_EXPR, gimple_assign_rhs_code (stmt)); | |
3159 | } | |
3160 | ||
3161 | /* Build a GIMPLE_NOP and verify various properties of it. */ | |
3162 | ||
3163 | static void | |
3164 | test_nop_stmt () | |
3165 | { | |
3166 | gimple *stmt = gimple_build_nop (); | |
3167 | verify_gimple_pp ("GIMPLE_NOP", stmt); | |
3168 | ASSERT_EQ (GIMPLE_NOP, gimple_code (stmt)); | |
3169 | ASSERT_EQ (NULL, gimple_get_lhs (stmt)); | |
3170 | ASSERT_FALSE (gimple_assign_single_p (stmt)); | |
3171 | } | |
3172 | ||
3173 | /* Build a GIMPLE_RETURN equivalent to | |
3174 | return 7; | |
3175 | and verify various properties of it. */ | |
3176 | ||
3177 | static void | |
3178 | test_return_stmt () | |
3179 | { | |
3180 | tree type = integer_type_node; | |
3181 | tree val = build_int_cst (type, 7); | |
3182 | greturn *stmt = gimple_build_return (val); | |
3183 | verify_gimple_pp ("return 7;", stmt); | |
3184 | ||
3185 | ASSERT_EQ (GIMPLE_RETURN, gimple_code (stmt)); | |
3186 | ASSERT_EQ (NULL, gimple_get_lhs (stmt)); | |
3187 | ASSERT_EQ (val, gimple_return_retval (stmt)); | |
3188 | ASSERT_FALSE (gimple_assign_single_p (stmt)); | |
3189 | } | |
3190 | ||
3191 | /* Build a GIMPLE_RETURN equivalent to | |
3192 | return; | |
3193 | and verify various properties of it. */ | |
3194 | ||
3195 | static void | |
3196 | test_return_without_value () | |
3197 | { | |
3198 | greturn *stmt = gimple_build_return (NULL); | |
3199 | verify_gimple_pp ("return;", stmt); | |
3200 | ||
3201 | ASSERT_EQ (GIMPLE_RETURN, gimple_code (stmt)); | |
3202 | ASSERT_EQ (NULL, gimple_get_lhs (stmt)); | |
3203 | ASSERT_EQ (NULL, gimple_return_retval (stmt)); | |
3204 | ASSERT_FALSE (gimple_assign_single_p (stmt)); | |
3205 | } | |
3206 | ||
3207 | /* Run all of the selftests within this file. */ | |
3208 | ||
3209 | void | |
3210 | gimple_c_tests () | |
3211 | { | |
3212 | test_assign_single (); | |
3213 | test_assign_binop (); | |
3214 | test_nop_stmt (); | |
3215 | test_return_stmt (); | |
3216 | test_return_without_value (); | |
3217 | } | |
3218 | ||
3219 | } // namespace selftest | |
3220 | ||
3221 | ||
3222 | #endif /* CHECKING_P */ |