Mercurial > hg > CbC > CbC_gcc
comparison gcc/cp/semantics.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 84e7813d76e9 |
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68:561a7518be6b | 111:04ced10e8804 |
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1 /* Perform the semantic phase of parsing, i.e., the process of | |
2 building tree structure, checking semantic consistency, and | |
3 building RTL. These routines are used both during actual parsing | |
4 and during the instantiation of template functions. | |
5 | |
6 Copyright (C) 1998-2017 Free Software Foundation, Inc. | |
7 Written by Mark Mitchell (mmitchell@usa.net) based on code found | |
8 formerly in parse.y and pt.c. | |
9 | |
10 This file is part of GCC. | |
11 | |
12 GCC is free software; you can redistribute it and/or modify it | |
13 under the terms of the GNU General Public License as published by | |
14 the Free Software Foundation; either version 3, or (at your option) | |
15 any later version. | |
16 | |
17 GCC is distributed in the hope that it will be useful, but | |
18 WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 General Public License for more details. | |
21 | |
22 You should have received a copy of the GNU General Public License | |
23 along with GCC; see the file COPYING3. If not see | |
24 <http://www.gnu.org/licenses/>. */ | |
25 | |
26 #include "config.h" | |
27 #include "system.h" | |
28 #include "coretypes.h" | |
29 #include "target.h" | |
30 #include "bitmap.h" | |
31 #include "cp-tree.h" | |
32 #include "stringpool.h" | |
33 #include "cgraph.h" | |
34 #include "stmt.h" | |
35 #include "varasm.h" | |
36 #include "stor-layout.h" | |
37 #include "c-family/c-objc.h" | |
38 #include "tree-inline.h" | |
39 #include "intl.h" | |
40 #include "tree-iterator.h" | |
41 #include "omp-general.h" | |
42 #include "convert.h" | |
43 #include "stringpool.h" | |
44 #include "attribs.h" | |
45 #include "gomp-constants.h" | |
46 #include "predict.h" | |
47 | |
48 /* There routines provide a modular interface to perform many parsing | |
49 operations. They may therefore be used during actual parsing, or | |
50 during template instantiation, which may be regarded as a | |
51 degenerate form of parsing. */ | |
52 | |
53 static tree maybe_convert_cond (tree); | |
54 static tree finalize_nrv_r (tree *, int *, void *); | |
55 static tree capture_decltype (tree); | |
56 | |
57 /* Used for OpenMP non-static data member privatization. */ | |
58 | |
59 static hash_map<tree, tree> *omp_private_member_map; | |
60 static vec<tree> omp_private_member_vec; | |
61 static bool omp_private_member_ignore_next; | |
62 | |
63 | |
64 /* Deferred Access Checking Overview | |
65 --------------------------------- | |
66 | |
67 Most C++ expressions and declarations require access checking | |
68 to be performed during parsing. However, in several cases, | |
69 this has to be treated differently. | |
70 | |
71 For member declarations, access checking has to be deferred | |
72 until more information about the declaration is known. For | |
73 example: | |
74 | |
75 class A { | |
76 typedef int X; | |
77 public: | |
78 X f(); | |
79 }; | |
80 | |
81 A::X A::f(); | |
82 A::X g(); | |
83 | |
84 When we are parsing the function return type `A::X', we don't | |
85 really know if this is allowed until we parse the function name. | |
86 | |
87 Furthermore, some contexts require that access checking is | |
88 never performed at all. These include class heads, and template | |
89 instantiations. | |
90 | |
91 Typical use of access checking functions is described here: | |
92 | |
93 1. When we enter a context that requires certain access checking | |
94 mode, the function `push_deferring_access_checks' is called with | |
95 DEFERRING argument specifying the desired mode. Access checking | |
96 may be performed immediately (dk_no_deferred), deferred | |
97 (dk_deferred), or not performed (dk_no_check). | |
98 | |
99 2. When a declaration such as a type, or a variable, is encountered, | |
100 the function `perform_or_defer_access_check' is called. It | |
101 maintains a vector of all deferred checks. | |
102 | |
103 3. The global `current_class_type' or `current_function_decl' is then | |
104 setup by the parser. `enforce_access' relies on these information | |
105 to check access. | |
106 | |
107 4. Upon exiting the context mentioned in step 1, | |
108 `perform_deferred_access_checks' is called to check all declaration | |
109 stored in the vector. `pop_deferring_access_checks' is then | |
110 called to restore the previous access checking mode. | |
111 | |
112 In case of parsing error, we simply call `pop_deferring_access_checks' | |
113 without `perform_deferred_access_checks'. */ | |
114 | |
115 struct GTY(()) deferred_access { | |
116 /* A vector representing name-lookups for which we have deferred | |
117 checking access controls. We cannot check the accessibility of | |
118 names used in a decl-specifier-seq until we know what is being | |
119 declared because code like: | |
120 | |
121 class A { | |
122 class B {}; | |
123 B* f(); | |
124 } | |
125 | |
126 A::B* A::f() { return 0; } | |
127 | |
128 is valid, even though `A::B' is not generally accessible. */ | |
129 vec<deferred_access_check, va_gc> * GTY(()) deferred_access_checks; | |
130 | |
131 /* The current mode of access checks. */ | |
132 enum deferring_kind deferring_access_checks_kind; | |
133 | |
134 }; | |
135 | |
136 /* Data for deferred access checking. */ | |
137 static GTY(()) vec<deferred_access, va_gc> *deferred_access_stack; | |
138 static GTY(()) unsigned deferred_access_no_check; | |
139 | |
140 /* Save the current deferred access states and start deferred | |
141 access checking iff DEFER_P is true. */ | |
142 | |
143 void | |
144 push_deferring_access_checks (deferring_kind deferring) | |
145 { | |
146 /* For context like template instantiation, access checking | |
147 disabling applies to all nested context. */ | |
148 if (deferred_access_no_check || deferring == dk_no_check) | |
149 deferred_access_no_check++; | |
150 else | |
151 { | |
152 deferred_access e = {NULL, deferring}; | |
153 vec_safe_push (deferred_access_stack, e); | |
154 } | |
155 } | |
156 | |
157 /* Save the current deferred access states and start deferred access | |
158 checking, continuing the set of deferred checks in CHECKS. */ | |
159 | |
160 void | |
161 reopen_deferring_access_checks (vec<deferred_access_check, va_gc> * checks) | |
162 { | |
163 push_deferring_access_checks (dk_deferred); | |
164 if (!deferred_access_no_check) | |
165 deferred_access_stack->last().deferred_access_checks = checks; | |
166 } | |
167 | |
168 /* Resume deferring access checks again after we stopped doing | |
169 this previously. */ | |
170 | |
171 void | |
172 resume_deferring_access_checks (void) | |
173 { | |
174 if (!deferred_access_no_check) | |
175 deferred_access_stack->last().deferring_access_checks_kind = dk_deferred; | |
176 } | |
177 | |
178 /* Stop deferring access checks. */ | |
179 | |
180 void | |
181 stop_deferring_access_checks (void) | |
182 { | |
183 if (!deferred_access_no_check) | |
184 deferred_access_stack->last().deferring_access_checks_kind = dk_no_deferred; | |
185 } | |
186 | |
187 /* Discard the current deferred access checks and restore the | |
188 previous states. */ | |
189 | |
190 void | |
191 pop_deferring_access_checks (void) | |
192 { | |
193 if (deferred_access_no_check) | |
194 deferred_access_no_check--; | |
195 else | |
196 deferred_access_stack->pop (); | |
197 } | |
198 | |
199 /* Returns a TREE_LIST representing the deferred checks. | |
200 The TREE_PURPOSE of each node is the type through which the | |
201 access occurred; the TREE_VALUE is the declaration named. | |
202 */ | |
203 | |
204 vec<deferred_access_check, va_gc> * | |
205 get_deferred_access_checks (void) | |
206 { | |
207 if (deferred_access_no_check) | |
208 return NULL; | |
209 else | |
210 return (deferred_access_stack->last().deferred_access_checks); | |
211 } | |
212 | |
213 /* Take current deferred checks and combine with the | |
214 previous states if we also defer checks previously. | |
215 Otherwise perform checks now. */ | |
216 | |
217 void | |
218 pop_to_parent_deferring_access_checks (void) | |
219 { | |
220 if (deferred_access_no_check) | |
221 deferred_access_no_check--; | |
222 else | |
223 { | |
224 vec<deferred_access_check, va_gc> *checks; | |
225 deferred_access *ptr; | |
226 | |
227 checks = (deferred_access_stack->last ().deferred_access_checks); | |
228 | |
229 deferred_access_stack->pop (); | |
230 ptr = &deferred_access_stack->last (); | |
231 if (ptr->deferring_access_checks_kind == dk_no_deferred) | |
232 { | |
233 /* Check access. */ | |
234 perform_access_checks (checks, tf_warning_or_error); | |
235 } | |
236 else | |
237 { | |
238 /* Merge with parent. */ | |
239 int i, j; | |
240 deferred_access_check *chk, *probe; | |
241 | |
242 FOR_EACH_VEC_SAFE_ELT (checks, i, chk) | |
243 { | |
244 FOR_EACH_VEC_SAFE_ELT (ptr->deferred_access_checks, j, probe) | |
245 { | |
246 if (probe->binfo == chk->binfo && | |
247 probe->decl == chk->decl && | |
248 probe->diag_decl == chk->diag_decl) | |
249 goto found; | |
250 } | |
251 /* Insert into parent's checks. */ | |
252 vec_safe_push (ptr->deferred_access_checks, *chk); | |
253 found:; | |
254 } | |
255 } | |
256 } | |
257 } | |
258 | |
259 /* Perform the access checks in CHECKS. The TREE_PURPOSE of each node | |
260 is the BINFO indicating the qualifying scope used to access the | |
261 DECL node stored in the TREE_VALUE of the node. If CHECKS is empty | |
262 or we aren't in SFINAE context or all the checks succeed return TRUE, | |
263 otherwise FALSE. */ | |
264 | |
265 bool | |
266 perform_access_checks (vec<deferred_access_check, va_gc> *checks, | |
267 tsubst_flags_t complain) | |
268 { | |
269 int i; | |
270 deferred_access_check *chk; | |
271 location_t loc = input_location; | |
272 bool ok = true; | |
273 | |
274 if (!checks) | |
275 return true; | |
276 | |
277 FOR_EACH_VEC_SAFE_ELT (checks, i, chk) | |
278 { | |
279 input_location = chk->loc; | |
280 ok &= enforce_access (chk->binfo, chk->decl, chk->diag_decl, complain); | |
281 } | |
282 | |
283 input_location = loc; | |
284 return (complain & tf_error) ? true : ok; | |
285 } | |
286 | |
287 /* Perform the deferred access checks. | |
288 | |
289 After performing the checks, we still have to keep the list | |
290 `deferred_access_stack->deferred_access_checks' since we may want | |
291 to check access for them again later in a different context. | |
292 For example: | |
293 | |
294 class A { | |
295 typedef int X; | |
296 static X a; | |
297 }; | |
298 A::X A::a, x; // No error for `A::a', error for `x' | |
299 | |
300 We have to perform deferred access of `A::X', first with `A::a', | |
301 next with `x'. Return value like perform_access_checks above. */ | |
302 | |
303 bool | |
304 perform_deferred_access_checks (tsubst_flags_t complain) | |
305 { | |
306 return perform_access_checks (get_deferred_access_checks (), complain); | |
307 } | |
308 | |
309 /* Defer checking the accessibility of DECL, when looked up in | |
310 BINFO. DIAG_DECL is the declaration to use to print diagnostics. | |
311 Return value like perform_access_checks above. | |
312 If non-NULL, report failures to AFI. */ | |
313 | |
314 bool | |
315 perform_or_defer_access_check (tree binfo, tree decl, tree diag_decl, | |
316 tsubst_flags_t complain, | |
317 access_failure_info *afi) | |
318 { | |
319 int i; | |
320 deferred_access *ptr; | |
321 deferred_access_check *chk; | |
322 | |
323 | |
324 /* Exit if we are in a context that no access checking is performed. | |
325 */ | |
326 if (deferred_access_no_check) | |
327 return true; | |
328 | |
329 gcc_assert (TREE_CODE (binfo) == TREE_BINFO); | |
330 | |
331 ptr = &deferred_access_stack->last (); | |
332 | |
333 /* If we are not supposed to defer access checks, just check now. */ | |
334 if (ptr->deferring_access_checks_kind == dk_no_deferred) | |
335 { | |
336 bool ok = enforce_access (binfo, decl, diag_decl, complain, afi); | |
337 return (complain & tf_error) ? true : ok; | |
338 } | |
339 | |
340 /* See if we are already going to perform this check. */ | |
341 FOR_EACH_VEC_SAFE_ELT (ptr->deferred_access_checks, i, chk) | |
342 { | |
343 if (chk->decl == decl && chk->binfo == binfo && | |
344 chk->diag_decl == diag_decl) | |
345 { | |
346 return true; | |
347 } | |
348 } | |
349 /* If not, record the check. */ | |
350 deferred_access_check new_access = {binfo, decl, diag_decl, input_location}; | |
351 vec_safe_push (ptr->deferred_access_checks, new_access); | |
352 | |
353 return true; | |
354 } | |
355 | |
356 /* Returns nonzero if the current statement is a full expression, | |
357 i.e. temporaries created during that statement should be destroyed | |
358 at the end of the statement. */ | |
359 | |
360 int | |
361 stmts_are_full_exprs_p (void) | |
362 { | |
363 return current_stmt_tree ()->stmts_are_full_exprs_p; | |
364 } | |
365 | |
366 /* T is a statement. Add it to the statement-tree. This is the C++ | |
367 version. The C/ObjC frontends have a slightly different version of | |
368 this function. */ | |
369 | |
370 tree | |
371 add_stmt (tree t) | |
372 { | |
373 enum tree_code code = TREE_CODE (t); | |
374 | |
375 if (EXPR_P (t) && code != LABEL_EXPR) | |
376 { | |
377 if (!EXPR_HAS_LOCATION (t)) | |
378 SET_EXPR_LOCATION (t, input_location); | |
379 | |
380 /* When we expand a statement-tree, we must know whether or not the | |
381 statements are full-expressions. We record that fact here. */ | |
382 STMT_IS_FULL_EXPR_P (t) = stmts_are_full_exprs_p (); | |
383 } | |
384 | |
385 if (code == LABEL_EXPR || code == CASE_LABEL_EXPR) | |
386 STATEMENT_LIST_HAS_LABEL (cur_stmt_list) = 1; | |
387 | |
388 /* Add T to the statement-tree. Non-side-effect statements need to be | |
389 recorded during statement expressions. */ | |
390 gcc_checking_assert (!stmt_list_stack->is_empty ()); | |
391 append_to_statement_list_force (t, &cur_stmt_list); | |
392 | |
393 return t; | |
394 } | |
395 | |
396 /* Returns the stmt_tree to which statements are currently being added. */ | |
397 | |
398 stmt_tree | |
399 current_stmt_tree (void) | |
400 { | |
401 return (cfun | |
402 ? &cfun->language->base.x_stmt_tree | |
403 : &scope_chain->x_stmt_tree); | |
404 } | |
405 | |
406 /* If statements are full expressions, wrap STMT in a CLEANUP_POINT_EXPR. */ | |
407 | |
408 static tree | |
409 maybe_cleanup_point_expr (tree expr) | |
410 { | |
411 if (!processing_template_decl && stmts_are_full_exprs_p ()) | |
412 expr = fold_build_cleanup_point_expr (TREE_TYPE (expr), expr); | |
413 else | |
414 expr = do_dependent_capture (expr); | |
415 return expr; | |
416 } | |
417 | |
418 /* Like maybe_cleanup_point_expr except have the type of the new expression be | |
419 void so we don't need to create a temporary variable to hold the inner | |
420 expression. The reason why we do this is because the original type might be | |
421 an aggregate and we cannot create a temporary variable for that type. */ | |
422 | |
423 tree | |
424 maybe_cleanup_point_expr_void (tree expr) | |
425 { | |
426 if (!processing_template_decl && stmts_are_full_exprs_p ()) | |
427 expr = fold_build_cleanup_point_expr (void_type_node, expr); | |
428 else | |
429 expr = do_dependent_capture (expr); | |
430 return expr; | |
431 } | |
432 | |
433 | |
434 | |
435 /* Create a declaration statement for the declaration given by the DECL. */ | |
436 | |
437 void | |
438 add_decl_expr (tree decl) | |
439 { | |
440 tree r = build_stmt (DECL_SOURCE_LOCATION (decl), DECL_EXPR, decl); | |
441 if (DECL_INITIAL (decl) | |
442 || (DECL_SIZE (decl) && TREE_SIDE_EFFECTS (DECL_SIZE (decl)))) | |
443 r = maybe_cleanup_point_expr_void (r); | |
444 add_stmt (r); | |
445 } | |
446 | |
447 /* Finish a scope. */ | |
448 | |
449 tree | |
450 do_poplevel (tree stmt_list) | |
451 { | |
452 tree block = NULL; | |
453 | |
454 if (stmts_are_full_exprs_p ()) | |
455 block = poplevel (kept_level_p (), 1, 0); | |
456 | |
457 stmt_list = pop_stmt_list (stmt_list); | |
458 | |
459 if (!processing_template_decl) | |
460 { | |
461 stmt_list = c_build_bind_expr (input_location, block, stmt_list); | |
462 /* ??? See c_end_compound_stmt re statement expressions. */ | |
463 } | |
464 | |
465 return stmt_list; | |
466 } | |
467 | |
468 /* Begin a new scope. */ | |
469 | |
470 static tree | |
471 do_pushlevel (scope_kind sk) | |
472 { | |
473 tree ret = push_stmt_list (); | |
474 if (stmts_are_full_exprs_p ()) | |
475 begin_scope (sk, NULL); | |
476 return ret; | |
477 } | |
478 | |
479 /* Queue a cleanup. CLEANUP is an expression/statement to be executed | |
480 when the current scope is exited. EH_ONLY is true when this is not | |
481 meant to apply to normal control flow transfer. */ | |
482 | |
483 void | |
484 push_cleanup (tree decl, tree cleanup, bool eh_only) | |
485 { | |
486 tree stmt = build_stmt (input_location, CLEANUP_STMT, NULL, cleanup, decl); | |
487 CLEANUP_EH_ONLY (stmt) = eh_only; | |
488 add_stmt (stmt); | |
489 CLEANUP_BODY (stmt) = push_stmt_list (); | |
490 } | |
491 | |
492 /* Simple infinite loop tracking for -Wreturn-type. We keep a stack of all | |
493 the current loops, represented by 'NULL_TREE' if we've seen a possible | |
494 exit, and 'error_mark_node' if not. This is currently used only to | |
495 suppress the warning about a function with no return statements, and | |
496 therefore we don't bother noting returns as possible exits. We also | |
497 don't bother with gotos. */ | |
498 | |
499 static void | |
500 begin_maybe_infinite_loop (tree cond) | |
501 { | |
502 /* Only track this while parsing a function, not during instantiation. */ | |
503 if (!cfun || (DECL_TEMPLATE_INSTANTIATION (current_function_decl) | |
504 && !processing_template_decl)) | |
505 return; | |
506 bool maybe_infinite = true; | |
507 if (cond) | |
508 { | |
509 cond = fold_non_dependent_expr (cond); | |
510 maybe_infinite = integer_nonzerop (cond); | |
511 } | |
512 vec_safe_push (cp_function_chain->infinite_loops, | |
513 maybe_infinite ? error_mark_node : NULL_TREE); | |
514 | |
515 } | |
516 | |
517 /* A break is a possible exit for the current loop. */ | |
518 | |
519 void | |
520 break_maybe_infinite_loop (void) | |
521 { | |
522 if (!cfun) | |
523 return; | |
524 cp_function_chain->infinite_loops->last() = NULL_TREE; | |
525 } | |
526 | |
527 /* If we reach the end of the loop without seeing a possible exit, we have | |
528 an infinite loop. */ | |
529 | |
530 static void | |
531 end_maybe_infinite_loop (tree cond) | |
532 { | |
533 if (!cfun || (DECL_TEMPLATE_INSTANTIATION (current_function_decl) | |
534 && !processing_template_decl)) | |
535 return; | |
536 tree current = cp_function_chain->infinite_loops->pop(); | |
537 if (current != NULL_TREE) | |
538 { | |
539 cond = fold_non_dependent_expr (cond); | |
540 if (integer_nonzerop (cond)) | |
541 current_function_infinite_loop = 1; | |
542 } | |
543 } | |
544 | |
545 | |
546 /* Begin a conditional that might contain a declaration. When generating | |
547 normal code, we want the declaration to appear before the statement | |
548 containing the conditional. When generating template code, we want the | |
549 conditional to be rendered as the raw DECL_EXPR. */ | |
550 | |
551 static void | |
552 begin_cond (tree *cond_p) | |
553 { | |
554 if (processing_template_decl) | |
555 *cond_p = push_stmt_list (); | |
556 } | |
557 | |
558 /* Finish such a conditional. */ | |
559 | |
560 static void | |
561 finish_cond (tree *cond_p, tree expr) | |
562 { | |
563 if (processing_template_decl) | |
564 { | |
565 tree cond = pop_stmt_list (*cond_p); | |
566 | |
567 if (expr == NULL_TREE) | |
568 /* Empty condition in 'for'. */ | |
569 gcc_assert (empty_expr_stmt_p (cond)); | |
570 else if (check_for_bare_parameter_packs (expr)) | |
571 expr = error_mark_node; | |
572 else if (!empty_expr_stmt_p (cond)) | |
573 expr = build2 (COMPOUND_EXPR, TREE_TYPE (expr), cond, expr); | |
574 } | |
575 *cond_p = expr; | |
576 } | |
577 | |
578 /* If *COND_P specifies a conditional with a declaration, transform the | |
579 loop such that | |
580 while (A x = 42) { } | |
581 for (; A x = 42;) { } | |
582 becomes | |
583 while (true) { A x = 42; if (!x) break; } | |
584 for (;;) { A x = 42; if (!x) break; } | |
585 The statement list for BODY will be empty if the conditional did | |
586 not declare anything. */ | |
587 | |
588 static void | |
589 simplify_loop_decl_cond (tree *cond_p, tree body) | |
590 { | |
591 tree cond, if_stmt; | |
592 | |
593 if (!TREE_SIDE_EFFECTS (body)) | |
594 return; | |
595 | |
596 cond = *cond_p; | |
597 *cond_p = boolean_true_node; | |
598 | |
599 if_stmt = begin_if_stmt (); | |
600 cond = cp_build_unary_op (TRUTH_NOT_EXPR, cond, false, tf_warning_or_error); | |
601 finish_if_stmt_cond (cond, if_stmt); | |
602 finish_break_stmt (); | |
603 finish_then_clause (if_stmt); | |
604 finish_if_stmt (if_stmt); | |
605 } | |
606 | |
607 /* Finish a goto-statement. */ | |
608 | |
609 tree | |
610 finish_goto_stmt (tree destination) | |
611 { | |
612 if (identifier_p (destination)) | |
613 destination = lookup_label (destination); | |
614 | |
615 /* We warn about unused labels with -Wunused. That means we have to | |
616 mark the used labels as used. */ | |
617 if (TREE_CODE (destination) == LABEL_DECL) | |
618 TREE_USED (destination) = 1; | |
619 else | |
620 { | |
621 if (check_no_cilk (destination, | |
622 "Cilk array notation cannot be used as a computed goto expression", | |
623 "%<_Cilk_spawn%> statement cannot be used as a computed goto expression")) | |
624 destination = error_mark_node; | |
625 destination = mark_rvalue_use (destination); | |
626 if (!processing_template_decl) | |
627 { | |
628 destination = cp_convert (ptr_type_node, destination, | |
629 tf_warning_or_error); | |
630 if (error_operand_p (destination)) | |
631 return NULL_TREE; | |
632 destination | |
633 = fold_build_cleanup_point_expr (TREE_TYPE (destination), | |
634 destination); | |
635 } | |
636 else | |
637 destination = do_dependent_capture (destination); | |
638 } | |
639 | |
640 check_goto (destination); | |
641 | |
642 add_stmt (build_predict_expr (PRED_GOTO, NOT_TAKEN)); | |
643 return add_stmt (build_stmt (input_location, GOTO_EXPR, destination)); | |
644 } | |
645 | |
646 /* COND is the condition-expression for an if, while, etc., | |
647 statement. Convert it to a boolean value, if appropriate. | |
648 In addition, verify sequence points if -Wsequence-point is enabled. */ | |
649 | |
650 static tree | |
651 maybe_convert_cond (tree cond) | |
652 { | |
653 /* Empty conditions remain empty. */ | |
654 if (!cond) | |
655 return NULL_TREE; | |
656 | |
657 /* Wait until we instantiate templates before doing conversion. */ | |
658 if (processing_template_decl) | |
659 return do_dependent_capture (cond); | |
660 | |
661 if (warn_sequence_point) | |
662 verify_sequence_points (cond); | |
663 | |
664 /* Do the conversion. */ | |
665 cond = convert_from_reference (cond); | |
666 | |
667 if (TREE_CODE (cond) == MODIFY_EXPR | |
668 && !TREE_NO_WARNING (cond) | |
669 && warn_parentheses) | |
670 { | |
671 warning_at (EXPR_LOC_OR_LOC (cond, input_location), OPT_Wparentheses, | |
672 "suggest parentheses around assignment used as truth value"); | |
673 TREE_NO_WARNING (cond) = 1; | |
674 } | |
675 | |
676 return condition_conversion (cond); | |
677 } | |
678 | |
679 /* Finish an expression-statement, whose EXPRESSION is as indicated. */ | |
680 | |
681 tree | |
682 finish_expr_stmt (tree expr) | |
683 { | |
684 tree r = NULL_TREE; | |
685 location_t loc = EXPR_LOCATION (expr); | |
686 | |
687 if (expr != NULL_TREE) | |
688 { | |
689 /* If we ran into a problem, make sure we complained. */ | |
690 gcc_assert (expr != error_mark_node || seen_error ()); | |
691 | |
692 if (!processing_template_decl) | |
693 { | |
694 if (warn_sequence_point) | |
695 verify_sequence_points (expr); | |
696 expr = convert_to_void (expr, ICV_STATEMENT, tf_warning_or_error); | |
697 } | |
698 else if (!type_dependent_expression_p (expr)) | |
699 convert_to_void (build_non_dependent_expr (expr), ICV_STATEMENT, | |
700 tf_warning_or_error); | |
701 | |
702 if (check_for_bare_parameter_packs (expr)) | |
703 expr = error_mark_node; | |
704 | |
705 /* Simplification of inner statement expressions, compound exprs, | |
706 etc can result in us already having an EXPR_STMT. */ | |
707 if (TREE_CODE (expr) != CLEANUP_POINT_EXPR) | |
708 { | |
709 if (TREE_CODE (expr) != EXPR_STMT) | |
710 expr = build_stmt (loc, EXPR_STMT, expr); | |
711 expr = maybe_cleanup_point_expr_void (expr); | |
712 } | |
713 | |
714 r = add_stmt (expr); | |
715 } | |
716 | |
717 return r; | |
718 } | |
719 | |
720 | |
721 /* Begin an if-statement. Returns a newly created IF_STMT if | |
722 appropriate. */ | |
723 | |
724 tree | |
725 begin_if_stmt (void) | |
726 { | |
727 tree r, scope; | |
728 scope = do_pushlevel (sk_cond); | |
729 r = build_stmt (input_location, IF_STMT, NULL_TREE, | |
730 NULL_TREE, NULL_TREE, scope); | |
731 current_binding_level->this_entity = r; | |
732 begin_cond (&IF_COND (r)); | |
733 return r; | |
734 } | |
735 | |
736 /* Process the COND of an if-statement, which may be given by | |
737 IF_STMT. */ | |
738 | |
739 tree | |
740 finish_if_stmt_cond (tree cond, tree if_stmt) | |
741 { | |
742 cond = maybe_convert_cond (cond); | |
743 if (IF_STMT_CONSTEXPR_P (if_stmt) | |
744 && is_constant_expression (cond) | |
745 && !value_dependent_expression_p (cond)) | |
746 { | |
747 cond = instantiate_non_dependent_expr (cond); | |
748 cond = cxx_constant_value (cond, NULL_TREE); | |
749 } | |
750 finish_cond (&IF_COND (if_stmt), cond); | |
751 add_stmt (if_stmt); | |
752 THEN_CLAUSE (if_stmt) = push_stmt_list (); | |
753 return cond; | |
754 } | |
755 | |
756 /* Finish the then-clause of an if-statement, which may be given by | |
757 IF_STMT. */ | |
758 | |
759 tree | |
760 finish_then_clause (tree if_stmt) | |
761 { | |
762 THEN_CLAUSE (if_stmt) = pop_stmt_list (THEN_CLAUSE (if_stmt)); | |
763 return if_stmt; | |
764 } | |
765 | |
766 /* Begin the else-clause of an if-statement. */ | |
767 | |
768 void | |
769 begin_else_clause (tree if_stmt) | |
770 { | |
771 ELSE_CLAUSE (if_stmt) = push_stmt_list (); | |
772 } | |
773 | |
774 /* Finish the else-clause of an if-statement, which may be given by | |
775 IF_STMT. */ | |
776 | |
777 void | |
778 finish_else_clause (tree if_stmt) | |
779 { | |
780 ELSE_CLAUSE (if_stmt) = pop_stmt_list (ELSE_CLAUSE (if_stmt)); | |
781 } | |
782 | |
783 /* Finish an if-statement. */ | |
784 | |
785 void | |
786 finish_if_stmt (tree if_stmt) | |
787 { | |
788 tree scope = IF_SCOPE (if_stmt); | |
789 IF_SCOPE (if_stmt) = NULL; | |
790 add_stmt (do_poplevel (scope)); | |
791 } | |
792 | |
793 /* Begin a while-statement. Returns a newly created WHILE_STMT if | |
794 appropriate. */ | |
795 | |
796 tree | |
797 begin_while_stmt (void) | |
798 { | |
799 tree r; | |
800 r = build_stmt (input_location, WHILE_STMT, NULL_TREE, NULL_TREE); | |
801 add_stmt (r); | |
802 WHILE_BODY (r) = do_pushlevel (sk_block); | |
803 begin_cond (&WHILE_COND (r)); | |
804 return r; | |
805 } | |
806 | |
807 /* Process the COND of a while-statement, which may be given by | |
808 WHILE_STMT. */ | |
809 | |
810 void | |
811 finish_while_stmt_cond (tree cond, tree while_stmt, bool ivdep) | |
812 { | |
813 if (check_no_cilk (cond, | |
814 "Cilk array notation cannot be used as a condition for while statement", | |
815 "%<_Cilk_spawn%> statement cannot be used as a condition for while statement")) | |
816 cond = error_mark_node; | |
817 cond = maybe_convert_cond (cond); | |
818 finish_cond (&WHILE_COND (while_stmt), cond); | |
819 begin_maybe_infinite_loop (cond); | |
820 if (ivdep && cond != error_mark_node) | |
821 WHILE_COND (while_stmt) = build2 (ANNOTATE_EXPR, | |
822 TREE_TYPE (WHILE_COND (while_stmt)), | |
823 WHILE_COND (while_stmt), | |
824 build_int_cst (integer_type_node, | |
825 annot_expr_ivdep_kind)); | |
826 simplify_loop_decl_cond (&WHILE_COND (while_stmt), WHILE_BODY (while_stmt)); | |
827 } | |
828 | |
829 /* Finish a while-statement, which may be given by WHILE_STMT. */ | |
830 | |
831 void | |
832 finish_while_stmt (tree while_stmt) | |
833 { | |
834 end_maybe_infinite_loop (boolean_true_node); | |
835 WHILE_BODY (while_stmt) = do_poplevel (WHILE_BODY (while_stmt)); | |
836 } | |
837 | |
838 /* Begin a do-statement. Returns a newly created DO_STMT if | |
839 appropriate. */ | |
840 | |
841 tree | |
842 begin_do_stmt (void) | |
843 { | |
844 tree r = build_stmt (input_location, DO_STMT, NULL_TREE, NULL_TREE); | |
845 begin_maybe_infinite_loop (boolean_true_node); | |
846 add_stmt (r); | |
847 DO_BODY (r) = push_stmt_list (); | |
848 return r; | |
849 } | |
850 | |
851 /* Finish the body of a do-statement, which may be given by DO_STMT. */ | |
852 | |
853 void | |
854 finish_do_body (tree do_stmt) | |
855 { | |
856 tree body = DO_BODY (do_stmt) = pop_stmt_list (DO_BODY (do_stmt)); | |
857 | |
858 if (TREE_CODE (body) == STATEMENT_LIST && STATEMENT_LIST_TAIL (body)) | |
859 body = STATEMENT_LIST_TAIL (body)->stmt; | |
860 | |
861 if (IS_EMPTY_STMT (body)) | |
862 warning (OPT_Wempty_body, | |
863 "suggest explicit braces around empty body in %<do%> statement"); | |
864 } | |
865 | |
866 /* Finish a do-statement, which may be given by DO_STMT, and whose | |
867 COND is as indicated. */ | |
868 | |
869 void | |
870 finish_do_stmt (tree cond, tree do_stmt, bool ivdep) | |
871 { | |
872 if (check_no_cilk (cond, | |
873 "Cilk array notation cannot be used as a condition for a do-while statement", | |
874 "%<_Cilk_spawn%> statement cannot be used as a condition for a do-while statement")) | |
875 cond = error_mark_node; | |
876 cond = maybe_convert_cond (cond); | |
877 end_maybe_infinite_loop (cond); | |
878 if (ivdep && cond != error_mark_node) | |
879 cond = build2 (ANNOTATE_EXPR, TREE_TYPE (cond), cond, | |
880 build_int_cst (integer_type_node, annot_expr_ivdep_kind)); | |
881 DO_COND (do_stmt) = cond; | |
882 } | |
883 | |
884 /* Finish a return-statement. The EXPRESSION returned, if any, is as | |
885 indicated. */ | |
886 | |
887 tree | |
888 finish_return_stmt (tree expr) | |
889 { | |
890 tree r; | |
891 bool no_warning; | |
892 | |
893 expr = check_return_expr (expr, &no_warning); | |
894 | |
895 if (error_operand_p (expr) | |
896 || (flag_openmp && !check_omp_return ())) | |
897 { | |
898 /* Suppress -Wreturn-type for this function. */ | |
899 if (warn_return_type) | |
900 TREE_NO_WARNING (current_function_decl) = true; | |
901 return error_mark_node; | |
902 } | |
903 | |
904 if (!processing_template_decl) | |
905 { | |
906 if (warn_sequence_point) | |
907 verify_sequence_points (expr); | |
908 | |
909 if (DECL_DESTRUCTOR_P (current_function_decl) | |
910 || (DECL_CONSTRUCTOR_P (current_function_decl) | |
911 && targetm.cxx.cdtor_returns_this ())) | |
912 { | |
913 /* Similarly, all destructors must run destructors for | |
914 base-classes before returning. So, all returns in a | |
915 destructor get sent to the DTOR_LABEL; finish_function emits | |
916 code to return a value there. */ | |
917 return finish_goto_stmt (cdtor_label); | |
918 } | |
919 } | |
920 | |
921 r = build_stmt (input_location, RETURN_EXPR, expr); | |
922 TREE_NO_WARNING (r) |= no_warning; | |
923 r = maybe_cleanup_point_expr_void (r); | |
924 r = add_stmt (r); | |
925 | |
926 return r; | |
927 } | |
928 | |
929 /* Begin the scope of a for-statement or a range-for-statement. | |
930 Both the returned trees are to be used in a call to | |
931 begin_for_stmt or begin_range_for_stmt. */ | |
932 | |
933 tree | |
934 begin_for_scope (tree *init) | |
935 { | |
936 tree scope = NULL_TREE; | |
937 if (flag_new_for_scope > 0) | |
938 scope = do_pushlevel (sk_for); | |
939 | |
940 if (processing_template_decl) | |
941 *init = push_stmt_list (); | |
942 else | |
943 *init = NULL_TREE; | |
944 | |
945 return scope; | |
946 } | |
947 | |
948 /* Begin a for-statement. Returns a new FOR_STMT. | |
949 SCOPE and INIT should be the return of begin_for_scope, | |
950 or both NULL_TREE */ | |
951 | |
952 tree | |
953 begin_for_stmt (tree scope, tree init) | |
954 { | |
955 tree r; | |
956 | |
957 r = build_stmt (input_location, FOR_STMT, NULL_TREE, NULL_TREE, | |
958 NULL_TREE, NULL_TREE, NULL_TREE); | |
959 | |
960 if (scope == NULL_TREE) | |
961 { | |
962 gcc_assert (!init || !(flag_new_for_scope > 0)); | |
963 if (!init) | |
964 scope = begin_for_scope (&init); | |
965 } | |
966 FOR_INIT_STMT (r) = init; | |
967 FOR_SCOPE (r) = scope; | |
968 | |
969 return r; | |
970 } | |
971 | |
972 /* Finish the init-statement of a for-statement, which may be | |
973 given by FOR_STMT. */ | |
974 | |
975 void | |
976 finish_init_stmt (tree for_stmt) | |
977 { | |
978 if (processing_template_decl) | |
979 FOR_INIT_STMT (for_stmt) = pop_stmt_list (FOR_INIT_STMT (for_stmt)); | |
980 add_stmt (for_stmt); | |
981 FOR_BODY (for_stmt) = do_pushlevel (sk_block); | |
982 begin_cond (&FOR_COND (for_stmt)); | |
983 } | |
984 | |
985 /* Finish the COND of a for-statement, which may be given by | |
986 FOR_STMT. */ | |
987 | |
988 void | |
989 finish_for_cond (tree cond, tree for_stmt, bool ivdep) | |
990 { | |
991 if (check_no_cilk (cond, | |
992 "Cilk array notation cannot be used in a condition for a for-loop", | |
993 "%<_Cilk_spawn%> statement cannot be used in a condition for a for-loop")) | |
994 cond = error_mark_node; | |
995 cond = maybe_convert_cond (cond); | |
996 finish_cond (&FOR_COND (for_stmt), cond); | |
997 begin_maybe_infinite_loop (cond); | |
998 if (ivdep && cond != error_mark_node) | |
999 FOR_COND (for_stmt) = build2 (ANNOTATE_EXPR, | |
1000 TREE_TYPE (FOR_COND (for_stmt)), | |
1001 FOR_COND (for_stmt), | |
1002 build_int_cst (integer_type_node, | |
1003 annot_expr_ivdep_kind)); | |
1004 simplify_loop_decl_cond (&FOR_COND (for_stmt), FOR_BODY (for_stmt)); | |
1005 } | |
1006 | |
1007 /* Finish the increment-EXPRESSION in a for-statement, which may be | |
1008 given by FOR_STMT. */ | |
1009 | |
1010 void | |
1011 finish_for_expr (tree expr, tree for_stmt) | |
1012 { | |
1013 if (!expr) | |
1014 return; | |
1015 /* If EXPR is an overloaded function, issue an error; there is no | |
1016 context available to use to perform overload resolution. */ | |
1017 if (type_unknown_p (expr)) | |
1018 { | |
1019 cxx_incomplete_type_error (expr, TREE_TYPE (expr)); | |
1020 expr = error_mark_node; | |
1021 } | |
1022 if (!processing_template_decl) | |
1023 { | |
1024 if (warn_sequence_point) | |
1025 verify_sequence_points (expr); | |
1026 expr = convert_to_void (expr, ICV_THIRD_IN_FOR, | |
1027 tf_warning_or_error); | |
1028 } | |
1029 else if (!type_dependent_expression_p (expr)) | |
1030 convert_to_void (build_non_dependent_expr (expr), ICV_THIRD_IN_FOR, | |
1031 tf_warning_or_error); | |
1032 expr = maybe_cleanup_point_expr_void (expr); | |
1033 if (check_for_bare_parameter_packs (expr)) | |
1034 expr = error_mark_node; | |
1035 FOR_EXPR (for_stmt) = expr; | |
1036 } | |
1037 | |
1038 /* Finish the body of a for-statement, which may be given by | |
1039 FOR_STMT. The increment-EXPR for the loop must be | |
1040 provided. | |
1041 It can also finish RANGE_FOR_STMT. */ | |
1042 | |
1043 void | |
1044 finish_for_stmt (tree for_stmt) | |
1045 { | |
1046 end_maybe_infinite_loop (boolean_true_node); | |
1047 | |
1048 if (TREE_CODE (for_stmt) == RANGE_FOR_STMT) | |
1049 RANGE_FOR_BODY (for_stmt) = do_poplevel (RANGE_FOR_BODY (for_stmt)); | |
1050 else | |
1051 FOR_BODY (for_stmt) = do_poplevel (FOR_BODY (for_stmt)); | |
1052 | |
1053 /* Pop the scope for the body of the loop. */ | |
1054 if (flag_new_for_scope > 0) | |
1055 { | |
1056 tree scope; | |
1057 tree *scope_ptr = (TREE_CODE (for_stmt) == RANGE_FOR_STMT | |
1058 ? &RANGE_FOR_SCOPE (for_stmt) | |
1059 : &FOR_SCOPE (for_stmt)); | |
1060 scope = *scope_ptr; | |
1061 *scope_ptr = NULL; | |
1062 add_stmt (do_poplevel (scope)); | |
1063 } | |
1064 } | |
1065 | |
1066 /* Begin a range-for-statement. Returns a new RANGE_FOR_STMT. | |
1067 SCOPE and INIT should be the return of begin_for_scope, | |
1068 or both NULL_TREE . | |
1069 To finish it call finish_for_stmt(). */ | |
1070 | |
1071 tree | |
1072 begin_range_for_stmt (tree scope, tree init) | |
1073 { | |
1074 tree r; | |
1075 | |
1076 begin_maybe_infinite_loop (boolean_false_node); | |
1077 | |
1078 r = build_stmt (input_location, RANGE_FOR_STMT, | |
1079 NULL_TREE, NULL_TREE, NULL_TREE, NULL_TREE); | |
1080 | |
1081 if (scope == NULL_TREE) | |
1082 { | |
1083 gcc_assert (!init || !(flag_new_for_scope > 0)); | |
1084 if (!init) | |
1085 scope = begin_for_scope (&init); | |
1086 } | |
1087 | |
1088 /* RANGE_FOR_STMTs do not use nor save the init tree, so we | |
1089 pop it now. */ | |
1090 if (init) | |
1091 pop_stmt_list (init); | |
1092 RANGE_FOR_SCOPE (r) = scope; | |
1093 | |
1094 return r; | |
1095 } | |
1096 | |
1097 /* Finish the head of a range-based for statement, which may | |
1098 be given by RANGE_FOR_STMT. DECL must be the declaration | |
1099 and EXPR must be the loop expression. */ | |
1100 | |
1101 void | |
1102 finish_range_for_decl (tree range_for_stmt, tree decl, tree expr) | |
1103 { | |
1104 RANGE_FOR_DECL (range_for_stmt) = decl; | |
1105 RANGE_FOR_EXPR (range_for_stmt) = expr; | |
1106 add_stmt (range_for_stmt); | |
1107 RANGE_FOR_BODY (range_for_stmt) = do_pushlevel (sk_block); | |
1108 } | |
1109 | |
1110 /* Finish a break-statement. */ | |
1111 | |
1112 tree | |
1113 finish_break_stmt (void) | |
1114 { | |
1115 /* In switch statements break is sometimes stylistically used after | |
1116 a return statement. This can lead to spurious warnings about | |
1117 control reaching the end of a non-void function when it is | |
1118 inlined. Note that we are calling block_may_fallthru with | |
1119 language specific tree nodes; this works because | |
1120 block_may_fallthru returns true when given something it does not | |
1121 understand. */ | |
1122 if (!block_may_fallthru (cur_stmt_list)) | |
1123 return void_node; | |
1124 return add_stmt (build_stmt (input_location, BREAK_STMT)); | |
1125 } | |
1126 | |
1127 /* Finish a continue-statement. */ | |
1128 | |
1129 tree | |
1130 finish_continue_stmt (void) | |
1131 { | |
1132 return add_stmt (build_stmt (input_location, CONTINUE_STMT)); | |
1133 } | |
1134 | |
1135 /* Begin a switch-statement. Returns a new SWITCH_STMT if | |
1136 appropriate. */ | |
1137 | |
1138 tree | |
1139 begin_switch_stmt (void) | |
1140 { | |
1141 tree r, scope; | |
1142 | |
1143 scope = do_pushlevel (sk_cond); | |
1144 r = build_stmt (input_location, SWITCH_STMT, NULL_TREE, NULL_TREE, NULL_TREE, scope); | |
1145 | |
1146 begin_cond (&SWITCH_STMT_COND (r)); | |
1147 | |
1148 return r; | |
1149 } | |
1150 | |
1151 /* Finish the cond of a switch-statement. */ | |
1152 | |
1153 void | |
1154 finish_switch_cond (tree cond, tree switch_stmt) | |
1155 { | |
1156 tree orig_type = NULL; | |
1157 | |
1158 if (check_no_cilk (cond, | |
1159 "Cilk array notation cannot be used as a condition for switch statement", | |
1160 "%<_Cilk_spawn%> statement cannot be used as a condition for switch statement")) | |
1161 cond = error_mark_node; | |
1162 | |
1163 if (!processing_template_decl) | |
1164 { | |
1165 /* Convert the condition to an integer or enumeration type. */ | |
1166 cond = build_expr_type_conversion (WANT_INT | WANT_ENUM, cond, true); | |
1167 if (cond == NULL_TREE) | |
1168 { | |
1169 error ("switch quantity not an integer"); | |
1170 cond = error_mark_node; | |
1171 } | |
1172 /* We want unlowered type here to handle enum bit-fields. */ | |
1173 orig_type = unlowered_expr_type (cond); | |
1174 if (TREE_CODE (orig_type) != ENUMERAL_TYPE) | |
1175 orig_type = TREE_TYPE (cond); | |
1176 if (cond != error_mark_node) | |
1177 { | |
1178 /* [stmt.switch] | |
1179 | |
1180 Integral promotions are performed. */ | |
1181 cond = perform_integral_promotions (cond); | |
1182 cond = maybe_cleanup_point_expr (cond); | |
1183 } | |
1184 } | |
1185 if (check_for_bare_parameter_packs (cond)) | |
1186 cond = error_mark_node; | |
1187 else if (!processing_template_decl && warn_sequence_point) | |
1188 verify_sequence_points (cond); | |
1189 | |
1190 finish_cond (&SWITCH_STMT_COND (switch_stmt), cond); | |
1191 SWITCH_STMT_TYPE (switch_stmt) = orig_type; | |
1192 add_stmt (switch_stmt); | |
1193 push_switch (switch_stmt); | |
1194 SWITCH_STMT_BODY (switch_stmt) = push_stmt_list (); | |
1195 } | |
1196 | |
1197 /* Finish the body of a switch-statement, which may be given by | |
1198 SWITCH_STMT. The COND to switch on is indicated. */ | |
1199 | |
1200 void | |
1201 finish_switch_stmt (tree switch_stmt) | |
1202 { | |
1203 tree scope; | |
1204 | |
1205 SWITCH_STMT_BODY (switch_stmt) = | |
1206 pop_stmt_list (SWITCH_STMT_BODY (switch_stmt)); | |
1207 pop_switch (); | |
1208 | |
1209 scope = SWITCH_STMT_SCOPE (switch_stmt); | |
1210 SWITCH_STMT_SCOPE (switch_stmt) = NULL; | |
1211 add_stmt (do_poplevel (scope)); | |
1212 } | |
1213 | |
1214 /* Begin a try-block. Returns a newly-created TRY_BLOCK if | |
1215 appropriate. */ | |
1216 | |
1217 tree | |
1218 begin_try_block (void) | |
1219 { | |
1220 tree r = build_stmt (input_location, TRY_BLOCK, NULL_TREE, NULL_TREE); | |
1221 add_stmt (r); | |
1222 TRY_STMTS (r) = push_stmt_list (); | |
1223 return r; | |
1224 } | |
1225 | |
1226 /* Likewise, for a function-try-block. The block returned in | |
1227 *COMPOUND_STMT is an artificial outer scope, containing the | |
1228 function-try-block. */ | |
1229 | |
1230 tree | |
1231 begin_function_try_block (tree *compound_stmt) | |
1232 { | |
1233 tree r; | |
1234 /* This outer scope does not exist in the C++ standard, but we need | |
1235 a place to put __FUNCTION__ and similar variables. */ | |
1236 *compound_stmt = begin_compound_stmt (0); | |
1237 r = begin_try_block (); | |
1238 FN_TRY_BLOCK_P (r) = 1; | |
1239 return r; | |
1240 } | |
1241 | |
1242 /* Finish a try-block, which may be given by TRY_BLOCK. */ | |
1243 | |
1244 void | |
1245 finish_try_block (tree try_block) | |
1246 { | |
1247 TRY_STMTS (try_block) = pop_stmt_list (TRY_STMTS (try_block)); | |
1248 TRY_HANDLERS (try_block) = push_stmt_list (); | |
1249 } | |
1250 | |
1251 /* Finish the body of a cleanup try-block, which may be given by | |
1252 TRY_BLOCK. */ | |
1253 | |
1254 void | |
1255 finish_cleanup_try_block (tree try_block) | |
1256 { | |
1257 TRY_STMTS (try_block) = pop_stmt_list (TRY_STMTS (try_block)); | |
1258 } | |
1259 | |
1260 /* Finish an implicitly generated try-block, with a cleanup is given | |
1261 by CLEANUP. */ | |
1262 | |
1263 void | |
1264 finish_cleanup (tree cleanup, tree try_block) | |
1265 { | |
1266 TRY_HANDLERS (try_block) = cleanup; | |
1267 CLEANUP_P (try_block) = 1; | |
1268 } | |
1269 | |
1270 /* Likewise, for a function-try-block. */ | |
1271 | |
1272 void | |
1273 finish_function_try_block (tree try_block) | |
1274 { | |
1275 finish_try_block (try_block); | |
1276 /* FIXME : something queer about CTOR_INITIALIZER somehow following | |
1277 the try block, but moving it inside. */ | |
1278 in_function_try_handler = 1; | |
1279 } | |
1280 | |
1281 /* Finish a handler-sequence for a try-block, which may be given by | |
1282 TRY_BLOCK. */ | |
1283 | |
1284 void | |
1285 finish_handler_sequence (tree try_block) | |
1286 { | |
1287 TRY_HANDLERS (try_block) = pop_stmt_list (TRY_HANDLERS (try_block)); | |
1288 check_handlers (TRY_HANDLERS (try_block)); | |
1289 } | |
1290 | |
1291 /* Finish the handler-seq for a function-try-block, given by | |
1292 TRY_BLOCK. COMPOUND_STMT is the outer block created by | |
1293 begin_function_try_block. */ | |
1294 | |
1295 void | |
1296 finish_function_handler_sequence (tree try_block, tree compound_stmt) | |
1297 { | |
1298 in_function_try_handler = 0; | |
1299 finish_handler_sequence (try_block); | |
1300 finish_compound_stmt (compound_stmt); | |
1301 } | |
1302 | |
1303 /* Begin a handler. Returns a HANDLER if appropriate. */ | |
1304 | |
1305 tree | |
1306 begin_handler (void) | |
1307 { | |
1308 tree r; | |
1309 | |
1310 r = build_stmt (input_location, HANDLER, NULL_TREE, NULL_TREE); | |
1311 add_stmt (r); | |
1312 | |
1313 /* Create a binding level for the eh_info and the exception object | |
1314 cleanup. */ | |
1315 HANDLER_BODY (r) = do_pushlevel (sk_catch); | |
1316 | |
1317 return r; | |
1318 } | |
1319 | |
1320 /* Finish the handler-parameters for a handler, which may be given by | |
1321 HANDLER. DECL is the declaration for the catch parameter, or NULL | |
1322 if this is a `catch (...)' clause. */ | |
1323 | |
1324 void | |
1325 finish_handler_parms (tree decl, tree handler) | |
1326 { | |
1327 tree type = NULL_TREE; | |
1328 if (processing_template_decl) | |
1329 { | |
1330 if (decl) | |
1331 { | |
1332 decl = pushdecl (decl); | |
1333 decl = push_template_decl (decl); | |
1334 HANDLER_PARMS (handler) = decl; | |
1335 type = TREE_TYPE (decl); | |
1336 } | |
1337 } | |
1338 else | |
1339 { | |
1340 type = expand_start_catch_block (decl); | |
1341 if (warn_catch_value | |
1342 && type != NULL_TREE | |
1343 && type != error_mark_node | |
1344 && TREE_CODE (TREE_TYPE (decl)) != REFERENCE_TYPE) | |
1345 { | |
1346 tree orig_type = TREE_TYPE (decl); | |
1347 if (CLASS_TYPE_P (orig_type)) | |
1348 { | |
1349 if (TYPE_POLYMORPHIC_P (orig_type)) | |
1350 warning (OPT_Wcatch_value_, | |
1351 "catching polymorphic type %q#T by value", orig_type); | |
1352 else if (warn_catch_value > 1) | |
1353 warning (OPT_Wcatch_value_, | |
1354 "catching type %q#T by value", orig_type); | |
1355 } | |
1356 else if (warn_catch_value > 2) | |
1357 warning (OPT_Wcatch_value_, | |
1358 "catching non-reference type %q#T", orig_type); | |
1359 } | |
1360 } | |
1361 HANDLER_TYPE (handler) = type; | |
1362 } | |
1363 | |
1364 /* Finish a handler, which may be given by HANDLER. The BLOCKs are | |
1365 the return value from the matching call to finish_handler_parms. */ | |
1366 | |
1367 void | |
1368 finish_handler (tree handler) | |
1369 { | |
1370 if (!processing_template_decl) | |
1371 expand_end_catch_block (); | |
1372 HANDLER_BODY (handler) = do_poplevel (HANDLER_BODY (handler)); | |
1373 } | |
1374 | |
1375 /* Begin a compound statement. FLAGS contains some bits that control the | |
1376 behavior and context. If BCS_NO_SCOPE is set, the compound statement | |
1377 does not define a scope. If BCS_FN_BODY is set, this is the outermost | |
1378 block of a function. If BCS_TRY_BLOCK is set, this is the block | |
1379 created on behalf of a TRY statement. Returns a token to be passed to | |
1380 finish_compound_stmt. */ | |
1381 | |
1382 tree | |
1383 begin_compound_stmt (unsigned int flags) | |
1384 { | |
1385 tree r; | |
1386 | |
1387 if (flags & BCS_NO_SCOPE) | |
1388 { | |
1389 r = push_stmt_list (); | |
1390 STATEMENT_LIST_NO_SCOPE (r) = 1; | |
1391 | |
1392 /* Normally, we try hard to keep the BLOCK for a statement-expression. | |
1393 But, if it's a statement-expression with a scopeless block, there's | |
1394 nothing to keep, and we don't want to accidentally keep a block | |
1395 *inside* the scopeless block. */ | |
1396 keep_next_level (false); | |
1397 } | |
1398 else | |
1399 { | |
1400 scope_kind sk = sk_block; | |
1401 if (flags & BCS_TRY_BLOCK) | |
1402 sk = sk_try; | |
1403 else if (flags & BCS_TRANSACTION) | |
1404 sk = sk_transaction; | |
1405 r = do_pushlevel (sk); | |
1406 } | |
1407 | |
1408 /* When processing a template, we need to remember where the braces were, | |
1409 so that we can set up identical scopes when instantiating the template | |
1410 later. BIND_EXPR is a handy candidate for this. | |
1411 Note that do_poplevel won't create a BIND_EXPR itself here (and thus | |
1412 result in nested BIND_EXPRs), since we don't build BLOCK nodes when | |
1413 processing templates. */ | |
1414 if (processing_template_decl) | |
1415 { | |
1416 r = build3 (BIND_EXPR, NULL, NULL, r, NULL); | |
1417 BIND_EXPR_TRY_BLOCK (r) = (flags & BCS_TRY_BLOCK) != 0; | |
1418 BIND_EXPR_BODY_BLOCK (r) = (flags & BCS_FN_BODY) != 0; | |
1419 TREE_SIDE_EFFECTS (r) = 1; | |
1420 } | |
1421 | |
1422 return r; | |
1423 } | |
1424 | |
1425 /* Finish a compound-statement, which is given by STMT. */ | |
1426 | |
1427 void | |
1428 finish_compound_stmt (tree stmt) | |
1429 { | |
1430 if (TREE_CODE (stmt) == BIND_EXPR) | |
1431 { | |
1432 tree body = do_poplevel (BIND_EXPR_BODY (stmt)); | |
1433 /* If the STATEMENT_LIST is empty and this BIND_EXPR isn't special, | |
1434 discard the BIND_EXPR so it can be merged with the containing | |
1435 STATEMENT_LIST. */ | |
1436 if (TREE_CODE (body) == STATEMENT_LIST | |
1437 && STATEMENT_LIST_HEAD (body) == NULL | |
1438 && !BIND_EXPR_BODY_BLOCK (stmt) | |
1439 && !BIND_EXPR_TRY_BLOCK (stmt)) | |
1440 stmt = body; | |
1441 else | |
1442 BIND_EXPR_BODY (stmt) = body; | |
1443 } | |
1444 else if (STATEMENT_LIST_NO_SCOPE (stmt)) | |
1445 stmt = pop_stmt_list (stmt); | |
1446 else | |
1447 { | |
1448 /* Destroy any ObjC "super" receivers that may have been | |
1449 created. */ | |
1450 objc_clear_super_receiver (); | |
1451 | |
1452 stmt = do_poplevel (stmt); | |
1453 } | |
1454 | |
1455 /* ??? See c_end_compound_stmt wrt statement expressions. */ | |
1456 add_stmt (stmt); | |
1457 } | |
1458 | |
1459 /* Finish an asm-statement, whose components are a STRING, some | |
1460 OUTPUT_OPERANDS, some INPUT_OPERANDS, some CLOBBERS and some | |
1461 LABELS. Also note whether the asm-statement should be | |
1462 considered volatile. */ | |
1463 | |
1464 tree | |
1465 finish_asm_stmt (int volatile_p, tree string, tree output_operands, | |
1466 tree input_operands, tree clobbers, tree labels) | |
1467 { | |
1468 tree r; | |
1469 tree t; | |
1470 int ninputs = list_length (input_operands); | |
1471 int noutputs = list_length (output_operands); | |
1472 | |
1473 if (!processing_template_decl) | |
1474 { | |
1475 const char *constraint; | |
1476 const char **oconstraints; | |
1477 bool allows_mem, allows_reg, is_inout; | |
1478 tree operand; | |
1479 int i; | |
1480 | |
1481 oconstraints = XALLOCAVEC (const char *, noutputs); | |
1482 | |
1483 string = resolve_asm_operand_names (string, output_operands, | |
1484 input_operands, labels); | |
1485 | |
1486 for (i = 0, t = output_operands; t; t = TREE_CHAIN (t), ++i) | |
1487 { | |
1488 operand = TREE_VALUE (t); | |
1489 | |
1490 /* ??? Really, this should not be here. Users should be using a | |
1491 proper lvalue, dammit. But there's a long history of using | |
1492 casts in the output operands. In cases like longlong.h, this | |
1493 becomes a primitive form of typechecking -- if the cast can be | |
1494 removed, then the output operand had a type of the proper width; | |
1495 otherwise we'll get an error. Gross, but ... */ | |
1496 STRIP_NOPS (operand); | |
1497 | |
1498 operand = mark_lvalue_use (operand); | |
1499 | |
1500 if (!lvalue_or_else (operand, lv_asm, tf_warning_or_error)) | |
1501 operand = error_mark_node; | |
1502 | |
1503 if (operand != error_mark_node | |
1504 && (TREE_READONLY (operand) | |
1505 || CP_TYPE_CONST_P (TREE_TYPE (operand)) | |
1506 /* Functions are not modifiable, even though they are | |
1507 lvalues. */ | |
1508 || TREE_CODE (TREE_TYPE (operand)) == FUNCTION_TYPE | |
1509 || TREE_CODE (TREE_TYPE (operand)) == METHOD_TYPE | |
1510 /* If it's an aggregate and any field is const, then it is | |
1511 effectively const. */ | |
1512 || (CLASS_TYPE_P (TREE_TYPE (operand)) | |
1513 && C_TYPE_FIELDS_READONLY (TREE_TYPE (operand))))) | |
1514 cxx_readonly_error (operand, lv_asm); | |
1515 | |
1516 constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (t))); | |
1517 oconstraints[i] = constraint; | |
1518 | |
1519 if (parse_output_constraint (&constraint, i, ninputs, noutputs, | |
1520 &allows_mem, &allows_reg, &is_inout)) | |
1521 { | |
1522 /* If the operand is going to end up in memory, | |
1523 mark it addressable. */ | |
1524 if (!allows_reg && !cxx_mark_addressable (operand)) | |
1525 operand = error_mark_node; | |
1526 } | |
1527 else | |
1528 operand = error_mark_node; | |
1529 | |
1530 TREE_VALUE (t) = operand; | |
1531 } | |
1532 | |
1533 for (i = 0, t = input_operands; t; ++i, t = TREE_CHAIN (t)) | |
1534 { | |
1535 constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (t))); | |
1536 bool constraint_parsed | |
1537 = parse_input_constraint (&constraint, i, ninputs, noutputs, 0, | |
1538 oconstraints, &allows_mem, &allows_reg); | |
1539 /* If the operand is going to end up in memory, don't call | |
1540 decay_conversion. */ | |
1541 if (constraint_parsed && !allows_reg && allows_mem) | |
1542 operand = mark_lvalue_use (TREE_VALUE (t)); | |
1543 else | |
1544 operand = decay_conversion (TREE_VALUE (t), tf_warning_or_error); | |
1545 | |
1546 /* If the type of the operand hasn't been determined (e.g., | |
1547 because it involves an overloaded function), then issue | |
1548 an error message. There's no context available to | |
1549 resolve the overloading. */ | |
1550 if (TREE_TYPE (operand) == unknown_type_node) | |
1551 { | |
1552 error ("type of asm operand %qE could not be determined", | |
1553 TREE_VALUE (t)); | |
1554 operand = error_mark_node; | |
1555 } | |
1556 | |
1557 if (constraint_parsed) | |
1558 { | |
1559 /* If the operand is going to end up in memory, | |
1560 mark it addressable. */ | |
1561 if (!allows_reg && allows_mem) | |
1562 { | |
1563 /* Strip the nops as we allow this case. FIXME, this really | |
1564 should be rejected or made deprecated. */ | |
1565 STRIP_NOPS (operand); | |
1566 if (!cxx_mark_addressable (operand)) | |
1567 operand = error_mark_node; | |
1568 } | |
1569 else if (!allows_reg && !allows_mem) | |
1570 { | |
1571 /* If constraint allows neither register nor memory, | |
1572 try harder to get a constant. */ | |
1573 tree constop = maybe_constant_value (operand); | |
1574 if (TREE_CONSTANT (constop)) | |
1575 operand = constop; | |
1576 } | |
1577 } | |
1578 else | |
1579 operand = error_mark_node; | |
1580 | |
1581 TREE_VALUE (t) = operand; | |
1582 } | |
1583 } | |
1584 | |
1585 r = build_stmt (input_location, ASM_EXPR, string, | |
1586 output_operands, input_operands, | |
1587 clobbers, labels); | |
1588 ASM_VOLATILE_P (r) = volatile_p || noutputs == 0; | |
1589 r = maybe_cleanup_point_expr_void (r); | |
1590 return add_stmt (r); | |
1591 } | |
1592 | |
1593 /* Finish a label with the indicated NAME. Returns the new label. */ | |
1594 | |
1595 tree | |
1596 finish_label_stmt (tree name) | |
1597 { | |
1598 tree decl = define_label (input_location, name); | |
1599 | |
1600 if (decl == error_mark_node) | |
1601 return error_mark_node; | |
1602 | |
1603 add_stmt (build_stmt (input_location, LABEL_EXPR, decl)); | |
1604 | |
1605 return decl; | |
1606 } | |
1607 | |
1608 /* Finish a series of declarations for local labels. G++ allows users | |
1609 to declare "local" labels, i.e., labels with scope. This extension | |
1610 is useful when writing code involving statement-expressions. */ | |
1611 | |
1612 void | |
1613 finish_label_decl (tree name) | |
1614 { | |
1615 if (!at_function_scope_p ()) | |
1616 { | |
1617 error ("__label__ declarations are only allowed in function scopes"); | |
1618 return; | |
1619 } | |
1620 | |
1621 add_decl_expr (declare_local_label (name)); | |
1622 } | |
1623 | |
1624 /* When DECL goes out of scope, make sure that CLEANUP is executed. */ | |
1625 | |
1626 void | |
1627 finish_decl_cleanup (tree decl, tree cleanup) | |
1628 { | |
1629 push_cleanup (decl, cleanup, false); | |
1630 } | |
1631 | |
1632 /* If the current scope exits with an exception, run CLEANUP. */ | |
1633 | |
1634 void | |
1635 finish_eh_cleanup (tree cleanup) | |
1636 { | |
1637 push_cleanup (NULL, cleanup, true); | |
1638 } | |
1639 | |
1640 /* The MEM_INITS is a list of mem-initializers, in reverse of the | |
1641 order they were written by the user. Each node is as for | |
1642 emit_mem_initializers. */ | |
1643 | |
1644 void | |
1645 finish_mem_initializers (tree mem_inits) | |
1646 { | |
1647 /* Reorder the MEM_INITS so that they are in the order they appeared | |
1648 in the source program. */ | |
1649 mem_inits = nreverse (mem_inits); | |
1650 | |
1651 if (processing_template_decl) | |
1652 { | |
1653 tree mem; | |
1654 | |
1655 for (mem = mem_inits; mem; mem = TREE_CHAIN (mem)) | |
1656 { | |
1657 /* If the TREE_PURPOSE is a TYPE_PACK_EXPANSION, skip the | |
1658 check for bare parameter packs in the TREE_VALUE, because | |
1659 any parameter packs in the TREE_VALUE have already been | |
1660 bound as part of the TREE_PURPOSE. See | |
1661 make_pack_expansion for more information. */ | |
1662 if (TREE_CODE (TREE_PURPOSE (mem)) != TYPE_PACK_EXPANSION | |
1663 && check_for_bare_parameter_packs (TREE_VALUE (mem))) | |
1664 TREE_VALUE (mem) = error_mark_node; | |
1665 } | |
1666 | |
1667 add_stmt (build_min_nt_loc (UNKNOWN_LOCATION, | |
1668 CTOR_INITIALIZER, mem_inits)); | |
1669 } | |
1670 else | |
1671 emit_mem_initializers (mem_inits); | |
1672 } | |
1673 | |
1674 /* Obfuscate EXPR if it looks like an id-expression or member access so | |
1675 that the call to finish_decltype in do_auto_deduction will give the | |
1676 right result. */ | |
1677 | |
1678 tree | |
1679 force_paren_expr (tree expr) | |
1680 { | |
1681 /* This is only needed for decltype(auto) in C++14. */ | |
1682 if (cxx_dialect < cxx14) | |
1683 return expr; | |
1684 | |
1685 /* If we're in unevaluated context, we can't be deducing a | |
1686 return/initializer type, so we don't need to mess with this. */ | |
1687 if (cp_unevaluated_operand) | |
1688 return expr; | |
1689 | |
1690 if (!DECL_P (expr) && TREE_CODE (expr) != COMPONENT_REF | |
1691 && TREE_CODE (expr) != SCOPE_REF) | |
1692 return expr; | |
1693 | |
1694 if (TREE_CODE (expr) == COMPONENT_REF | |
1695 || TREE_CODE (expr) == SCOPE_REF) | |
1696 REF_PARENTHESIZED_P (expr) = true; | |
1697 else if (type_dependent_expression_p (expr)) | |
1698 expr = build1 (PAREN_EXPR, TREE_TYPE (expr), expr); | |
1699 else if (VAR_P (expr) && DECL_HARD_REGISTER (expr)) | |
1700 /* We can't bind a hard register variable to a reference. */; | |
1701 else | |
1702 { | |
1703 cp_lvalue_kind kind = lvalue_kind (expr); | |
1704 if ((kind & ~clk_class) != clk_none) | |
1705 { | |
1706 tree type = unlowered_expr_type (expr); | |
1707 bool rval = !!(kind & clk_rvalueref); | |
1708 type = cp_build_reference_type (type, rval); | |
1709 /* This inhibits warnings in, eg, cxx_mark_addressable | |
1710 (c++/60955). */ | |
1711 warning_sentinel s (extra_warnings); | |
1712 expr = build_static_cast (type, expr, tf_error); | |
1713 if (expr != error_mark_node) | |
1714 REF_PARENTHESIZED_P (expr) = true; | |
1715 } | |
1716 } | |
1717 | |
1718 return expr; | |
1719 } | |
1720 | |
1721 /* If T is an id-expression obfuscated by force_paren_expr, undo the | |
1722 obfuscation and return the underlying id-expression. Otherwise | |
1723 return T. */ | |
1724 | |
1725 tree | |
1726 maybe_undo_parenthesized_ref (tree t) | |
1727 { | |
1728 if (cxx_dialect >= cxx14 | |
1729 && INDIRECT_REF_P (t) | |
1730 && REF_PARENTHESIZED_P (t)) | |
1731 { | |
1732 t = TREE_OPERAND (t, 0); | |
1733 while (TREE_CODE (t) == NON_LVALUE_EXPR | |
1734 || TREE_CODE (t) == NOP_EXPR) | |
1735 t = TREE_OPERAND (t, 0); | |
1736 | |
1737 gcc_assert (TREE_CODE (t) == ADDR_EXPR | |
1738 || TREE_CODE (t) == STATIC_CAST_EXPR); | |
1739 t = TREE_OPERAND (t, 0); | |
1740 } | |
1741 | |
1742 return t; | |
1743 } | |
1744 | |
1745 /* Finish a parenthesized expression EXPR. */ | |
1746 | |
1747 cp_expr | |
1748 finish_parenthesized_expr (cp_expr expr) | |
1749 { | |
1750 if (EXPR_P (expr)) | |
1751 /* This inhibits warnings in c_common_truthvalue_conversion. */ | |
1752 TREE_NO_WARNING (expr) = 1; | |
1753 | |
1754 if (TREE_CODE (expr) == OFFSET_REF | |
1755 || TREE_CODE (expr) == SCOPE_REF) | |
1756 /* [expr.unary.op]/3 The qualified id of a pointer-to-member must not be | |
1757 enclosed in parentheses. */ | |
1758 PTRMEM_OK_P (expr) = 0; | |
1759 | |
1760 if (TREE_CODE (expr) == STRING_CST) | |
1761 PAREN_STRING_LITERAL_P (expr) = 1; | |
1762 | |
1763 expr = cp_expr (force_paren_expr (expr), expr.get_location ()); | |
1764 | |
1765 return expr; | |
1766 } | |
1767 | |
1768 /* Finish a reference to a non-static data member (DECL) that is not | |
1769 preceded by `.' or `->'. */ | |
1770 | |
1771 tree | |
1772 finish_non_static_data_member (tree decl, tree object, tree qualifying_scope) | |
1773 { | |
1774 gcc_assert (TREE_CODE (decl) == FIELD_DECL); | |
1775 bool try_omp_private = !object && omp_private_member_map; | |
1776 tree ret; | |
1777 | |
1778 if (!object) | |
1779 { | |
1780 tree scope = qualifying_scope; | |
1781 if (scope == NULL_TREE) | |
1782 scope = context_for_name_lookup (decl); | |
1783 object = maybe_dummy_object (scope, NULL); | |
1784 } | |
1785 | |
1786 object = maybe_resolve_dummy (object, true); | |
1787 if (object == error_mark_node) | |
1788 return error_mark_node; | |
1789 | |
1790 /* DR 613/850: Can use non-static data members without an associated | |
1791 object in sizeof/decltype/alignof. */ | |
1792 if (is_dummy_object (object) && cp_unevaluated_operand == 0 | |
1793 && (!processing_template_decl || !current_class_ref)) | |
1794 { | |
1795 if (current_function_decl | |
1796 && DECL_STATIC_FUNCTION_P (current_function_decl)) | |
1797 error ("invalid use of member %qD in static member function", decl); | |
1798 else | |
1799 error ("invalid use of non-static data member %qD", decl); | |
1800 inform (DECL_SOURCE_LOCATION (decl), "declared here"); | |
1801 | |
1802 return error_mark_node; | |
1803 } | |
1804 | |
1805 if (current_class_ptr) | |
1806 TREE_USED (current_class_ptr) = 1; | |
1807 if (processing_template_decl && !qualifying_scope) | |
1808 { | |
1809 tree type = TREE_TYPE (decl); | |
1810 | |
1811 if (TREE_CODE (type) == REFERENCE_TYPE) | |
1812 /* Quals on the object don't matter. */; | |
1813 else if (PACK_EXPANSION_P (type)) | |
1814 /* Don't bother trying to represent this. */ | |
1815 type = NULL_TREE; | |
1816 else | |
1817 { | |
1818 /* Set the cv qualifiers. */ | |
1819 int quals = cp_type_quals (TREE_TYPE (object)); | |
1820 | |
1821 if (DECL_MUTABLE_P (decl)) | |
1822 quals &= ~TYPE_QUAL_CONST; | |
1823 | |
1824 quals |= cp_type_quals (TREE_TYPE (decl)); | |
1825 type = cp_build_qualified_type (type, quals); | |
1826 } | |
1827 | |
1828 ret = (convert_from_reference | |
1829 (build_min (COMPONENT_REF, type, object, decl, NULL_TREE))); | |
1830 } | |
1831 /* If PROCESSING_TEMPLATE_DECL is nonzero here, then | |
1832 QUALIFYING_SCOPE is also non-null. Wrap this in a SCOPE_REF | |
1833 for now. */ | |
1834 else if (processing_template_decl) | |
1835 ret = build_qualified_name (TREE_TYPE (decl), | |
1836 qualifying_scope, | |
1837 decl, | |
1838 /*template_p=*/false); | |
1839 else | |
1840 { | |
1841 tree access_type = TREE_TYPE (object); | |
1842 | |
1843 perform_or_defer_access_check (TYPE_BINFO (access_type), decl, | |
1844 decl, tf_warning_or_error); | |
1845 | |
1846 /* If the data member was named `C::M', convert `*this' to `C' | |
1847 first. */ | |
1848 if (qualifying_scope) | |
1849 { | |
1850 tree binfo = NULL_TREE; | |
1851 object = build_scoped_ref (object, qualifying_scope, | |
1852 &binfo); | |
1853 } | |
1854 | |
1855 ret = build_class_member_access_expr (object, decl, | |
1856 /*access_path=*/NULL_TREE, | |
1857 /*preserve_reference=*/false, | |
1858 tf_warning_or_error); | |
1859 } | |
1860 if (try_omp_private) | |
1861 { | |
1862 tree *v = omp_private_member_map->get (decl); | |
1863 if (v) | |
1864 ret = convert_from_reference (*v); | |
1865 } | |
1866 return ret; | |
1867 } | |
1868 | |
1869 /* If we are currently parsing a template and we encountered a typedef | |
1870 TYPEDEF_DECL that is being accessed though CONTEXT, this function | |
1871 adds the typedef to a list tied to the current template. | |
1872 At template instantiation time, that list is walked and access check | |
1873 performed for each typedef. | |
1874 LOCATION is the location of the usage point of TYPEDEF_DECL. */ | |
1875 | |
1876 void | |
1877 add_typedef_to_current_template_for_access_check (tree typedef_decl, | |
1878 tree context, | |
1879 location_t location) | |
1880 { | |
1881 tree template_info = NULL; | |
1882 tree cs = current_scope (); | |
1883 | |
1884 if (!is_typedef_decl (typedef_decl) | |
1885 || !context | |
1886 || !CLASS_TYPE_P (context) | |
1887 || !cs) | |
1888 return; | |
1889 | |
1890 if (CLASS_TYPE_P (cs) || TREE_CODE (cs) == FUNCTION_DECL) | |
1891 template_info = get_template_info (cs); | |
1892 | |
1893 if (template_info | |
1894 && TI_TEMPLATE (template_info) | |
1895 && !currently_open_class (context)) | |
1896 append_type_to_template_for_access_check (cs, typedef_decl, | |
1897 context, location); | |
1898 } | |
1899 | |
1900 /* DECL was the declaration to which a qualified-id resolved. Issue | |
1901 an error message if it is not accessible. If OBJECT_TYPE is | |
1902 non-NULL, we have just seen `x->' or `x.' and OBJECT_TYPE is the | |
1903 type of `*x', or `x', respectively. If the DECL was named as | |
1904 `A::B' then NESTED_NAME_SPECIFIER is `A'. */ | |
1905 | |
1906 void | |
1907 check_accessibility_of_qualified_id (tree decl, | |
1908 tree object_type, | |
1909 tree nested_name_specifier) | |
1910 { | |
1911 tree scope; | |
1912 tree qualifying_type = NULL_TREE; | |
1913 | |
1914 /* If we are parsing a template declaration and if decl is a typedef, | |
1915 add it to a list tied to the template. | |
1916 At template instantiation time, that list will be walked and | |
1917 access check performed. */ | |
1918 add_typedef_to_current_template_for_access_check (decl, | |
1919 nested_name_specifier | |
1920 ? nested_name_specifier | |
1921 : DECL_CONTEXT (decl), | |
1922 input_location); | |
1923 | |
1924 /* If we're not checking, return immediately. */ | |
1925 if (deferred_access_no_check) | |
1926 return; | |
1927 | |
1928 /* Determine the SCOPE of DECL. */ | |
1929 scope = context_for_name_lookup (decl); | |
1930 /* If the SCOPE is not a type, then DECL is not a member. */ | |
1931 if (!TYPE_P (scope)) | |
1932 return; | |
1933 /* Compute the scope through which DECL is being accessed. */ | |
1934 if (object_type | |
1935 /* OBJECT_TYPE might not be a class type; consider: | |
1936 | |
1937 class A { typedef int I; }; | |
1938 I *p; | |
1939 p->A::I::~I(); | |
1940 | |
1941 In this case, we will have "A::I" as the DECL, but "I" as the | |
1942 OBJECT_TYPE. */ | |
1943 && CLASS_TYPE_P (object_type) | |
1944 && DERIVED_FROM_P (scope, object_type)) | |
1945 /* If we are processing a `->' or `.' expression, use the type of the | |
1946 left-hand side. */ | |
1947 qualifying_type = object_type; | |
1948 else if (nested_name_specifier) | |
1949 { | |
1950 /* If the reference is to a non-static member of the | |
1951 current class, treat it as if it were referenced through | |
1952 `this'. */ | |
1953 tree ct; | |
1954 if (DECL_NONSTATIC_MEMBER_P (decl) | |
1955 && current_class_ptr | |
1956 && DERIVED_FROM_P (scope, ct = current_nonlambda_class_type ())) | |
1957 qualifying_type = ct; | |
1958 /* Otherwise, use the type indicated by the | |
1959 nested-name-specifier. */ | |
1960 else | |
1961 qualifying_type = nested_name_specifier; | |
1962 } | |
1963 else | |
1964 /* Otherwise, the name must be from the current class or one of | |
1965 its bases. */ | |
1966 qualifying_type = currently_open_derived_class (scope); | |
1967 | |
1968 if (qualifying_type | |
1969 /* It is possible for qualifying type to be a TEMPLATE_TYPE_PARM | |
1970 or similar in a default argument value. */ | |
1971 && CLASS_TYPE_P (qualifying_type) | |
1972 && !dependent_type_p (qualifying_type)) | |
1973 perform_or_defer_access_check (TYPE_BINFO (qualifying_type), decl, | |
1974 decl, tf_warning_or_error); | |
1975 } | |
1976 | |
1977 /* EXPR is the result of a qualified-id. The QUALIFYING_CLASS was the | |
1978 class named to the left of the "::" operator. DONE is true if this | |
1979 expression is a complete postfix-expression; it is false if this | |
1980 expression is followed by '->', '[', '(', etc. ADDRESS_P is true | |
1981 iff this expression is the operand of '&'. TEMPLATE_P is true iff | |
1982 the qualified-id was of the form "A::template B". TEMPLATE_ARG_P | |
1983 is true iff this qualified name appears as a template argument. */ | |
1984 | |
1985 tree | |
1986 finish_qualified_id_expr (tree qualifying_class, | |
1987 tree expr, | |
1988 bool done, | |
1989 bool address_p, | |
1990 bool template_p, | |
1991 bool template_arg_p, | |
1992 tsubst_flags_t complain) | |
1993 { | |
1994 gcc_assert (TYPE_P (qualifying_class)); | |
1995 | |
1996 if (error_operand_p (expr)) | |
1997 return error_mark_node; | |
1998 | |
1999 if ((DECL_P (expr) || BASELINK_P (expr)) | |
2000 && !mark_used (expr, complain)) | |
2001 return error_mark_node; | |
2002 | |
2003 if (template_p) | |
2004 { | |
2005 if (TREE_CODE (expr) == UNBOUND_CLASS_TEMPLATE) | |
2006 /* cp_parser_lookup_name thought we were looking for a type, | |
2007 but we're actually looking for a declaration. */ | |
2008 expr = build_qualified_name (/*type*/NULL_TREE, | |
2009 TYPE_CONTEXT (expr), | |
2010 TYPE_IDENTIFIER (expr), | |
2011 /*template_p*/true); | |
2012 else | |
2013 check_template_keyword (expr); | |
2014 } | |
2015 | |
2016 /* If EXPR occurs as the operand of '&', use special handling that | |
2017 permits a pointer-to-member. */ | |
2018 if (address_p && done) | |
2019 { | |
2020 if (TREE_CODE (expr) == SCOPE_REF) | |
2021 expr = TREE_OPERAND (expr, 1); | |
2022 expr = build_offset_ref (qualifying_class, expr, | |
2023 /*address_p=*/true, complain); | |
2024 return expr; | |
2025 } | |
2026 | |
2027 /* No need to check access within an enum. */ | |
2028 if (TREE_CODE (qualifying_class) == ENUMERAL_TYPE) | |
2029 return expr; | |
2030 | |
2031 /* Within the scope of a class, turn references to non-static | |
2032 members into expression of the form "this->...". */ | |
2033 if (template_arg_p) | |
2034 /* But, within a template argument, we do not want make the | |
2035 transformation, as there is no "this" pointer. */ | |
2036 ; | |
2037 else if (TREE_CODE (expr) == FIELD_DECL) | |
2038 { | |
2039 push_deferring_access_checks (dk_no_check); | |
2040 expr = finish_non_static_data_member (expr, NULL_TREE, | |
2041 qualifying_class); | |
2042 pop_deferring_access_checks (); | |
2043 } | |
2044 else if (BASELINK_P (expr)) | |
2045 { | |
2046 /* See if any of the functions are non-static members. */ | |
2047 /* If so, the expression may be relative to 'this'. */ | |
2048 if (!shared_member_p (expr) | |
2049 && current_class_ptr | |
2050 && DERIVED_FROM_P (qualifying_class, | |
2051 current_nonlambda_class_type ())) | |
2052 expr = (build_class_member_access_expr | |
2053 (maybe_dummy_object (qualifying_class, NULL), | |
2054 expr, | |
2055 BASELINK_ACCESS_BINFO (expr), | |
2056 /*preserve_reference=*/false, | |
2057 complain)); | |
2058 else if (done) | |
2059 /* The expression is a qualified name whose address is not | |
2060 being taken. */ | |
2061 expr = build_offset_ref (qualifying_class, expr, /*address_p=*/false, | |
2062 complain); | |
2063 } | |
2064 else | |
2065 { | |
2066 /* In a template, return a SCOPE_REF for most qualified-ids | |
2067 so that we can check access at instantiation time. But if | |
2068 we're looking at a member of the current instantiation, we | |
2069 know we have access and building up the SCOPE_REF confuses | |
2070 non-type template argument handling. */ | |
2071 if (processing_template_decl | |
2072 && (!currently_open_class (qualifying_class) | |
2073 || TREE_CODE (expr) == BIT_NOT_EXPR)) | |
2074 expr = build_qualified_name (TREE_TYPE (expr), | |
2075 qualifying_class, expr, | |
2076 template_p); | |
2077 | |
2078 expr = convert_from_reference (expr); | |
2079 } | |
2080 | |
2081 return expr; | |
2082 } | |
2083 | |
2084 /* Begin a statement-expression. The value returned must be passed to | |
2085 finish_stmt_expr. */ | |
2086 | |
2087 tree | |
2088 begin_stmt_expr (void) | |
2089 { | |
2090 return push_stmt_list (); | |
2091 } | |
2092 | |
2093 /* Process the final expression of a statement expression. EXPR can be | |
2094 NULL, if the final expression is empty. Return a STATEMENT_LIST | |
2095 containing all the statements in the statement-expression, or | |
2096 ERROR_MARK_NODE if there was an error. */ | |
2097 | |
2098 tree | |
2099 finish_stmt_expr_expr (tree expr, tree stmt_expr) | |
2100 { | |
2101 if (error_operand_p (expr)) | |
2102 { | |
2103 /* The type of the statement-expression is the type of the last | |
2104 expression. */ | |
2105 TREE_TYPE (stmt_expr) = error_mark_node; | |
2106 return error_mark_node; | |
2107 } | |
2108 | |
2109 /* If the last statement does not have "void" type, then the value | |
2110 of the last statement is the value of the entire expression. */ | |
2111 if (expr) | |
2112 { | |
2113 tree type = TREE_TYPE (expr); | |
2114 | |
2115 if (processing_template_decl) | |
2116 { | |
2117 expr = build_stmt (input_location, EXPR_STMT, expr); | |
2118 expr = add_stmt (expr); | |
2119 /* Mark the last statement so that we can recognize it as such at | |
2120 template-instantiation time. */ | |
2121 EXPR_STMT_STMT_EXPR_RESULT (expr) = 1; | |
2122 } | |
2123 else if (VOID_TYPE_P (type)) | |
2124 { | |
2125 /* Just treat this like an ordinary statement. */ | |
2126 expr = finish_expr_stmt (expr); | |
2127 } | |
2128 else | |
2129 { | |
2130 /* It actually has a value we need to deal with. First, force it | |
2131 to be an rvalue so that we won't need to build up a copy | |
2132 constructor call later when we try to assign it to something. */ | |
2133 expr = force_rvalue (expr, tf_warning_or_error); | |
2134 if (error_operand_p (expr)) | |
2135 return error_mark_node; | |
2136 | |
2137 /* Update for array-to-pointer decay. */ | |
2138 type = TREE_TYPE (expr); | |
2139 | |
2140 /* Wrap it in a CLEANUP_POINT_EXPR and add it to the list like a | |
2141 normal statement, but don't convert to void or actually add | |
2142 the EXPR_STMT. */ | |
2143 if (TREE_CODE (expr) != CLEANUP_POINT_EXPR) | |
2144 expr = maybe_cleanup_point_expr (expr); | |
2145 add_stmt (expr); | |
2146 } | |
2147 | |
2148 /* The type of the statement-expression is the type of the last | |
2149 expression. */ | |
2150 TREE_TYPE (stmt_expr) = type; | |
2151 } | |
2152 | |
2153 return stmt_expr; | |
2154 } | |
2155 | |
2156 /* Finish a statement-expression. EXPR should be the value returned | |
2157 by the previous begin_stmt_expr. Returns an expression | |
2158 representing the statement-expression. */ | |
2159 | |
2160 tree | |
2161 finish_stmt_expr (tree stmt_expr, bool has_no_scope) | |
2162 { | |
2163 tree type; | |
2164 tree result; | |
2165 | |
2166 if (error_operand_p (stmt_expr)) | |
2167 { | |
2168 pop_stmt_list (stmt_expr); | |
2169 return error_mark_node; | |
2170 } | |
2171 | |
2172 gcc_assert (TREE_CODE (stmt_expr) == STATEMENT_LIST); | |
2173 | |
2174 type = TREE_TYPE (stmt_expr); | |
2175 result = pop_stmt_list (stmt_expr); | |
2176 TREE_TYPE (result) = type; | |
2177 | |
2178 if (processing_template_decl) | |
2179 { | |
2180 result = build_min (STMT_EXPR, type, result); | |
2181 TREE_SIDE_EFFECTS (result) = 1; | |
2182 STMT_EXPR_NO_SCOPE (result) = has_no_scope; | |
2183 } | |
2184 else if (CLASS_TYPE_P (type)) | |
2185 { | |
2186 /* Wrap the statement-expression in a TARGET_EXPR so that the | |
2187 temporary object created by the final expression is destroyed at | |
2188 the end of the full-expression containing the | |
2189 statement-expression. */ | |
2190 result = force_target_expr (type, result, tf_warning_or_error); | |
2191 } | |
2192 | |
2193 return result; | |
2194 } | |
2195 | |
2196 /* Returns the expression which provides the value of STMT_EXPR. */ | |
2197 | |
2198 tree | |
2199 stmt_expr_value_expr (tree stmt_expr) | |
2200 { | |
2201 tree t = STMT_EXPR_STMT (stmt_expr); | |
2202 | |
2203 if (TREE_CODE (t) == BIND_EXPR) | |
2204 t = BIND_EXPR_BODY (t); | |
2205 | |
2206 if (TREE_CODE (t) == STATEMENT_LIST && STATEMENT_LIST_TAIL (t)) | |
2207 t = STATEMENT_LIST_TAIL (t)->stmt; | |
2208 | |
2209 if (TREE_CODE (t) == EXPR_STMT) | |
2210 t = EXPR_STMT_EXPR (t); | |
2211 | |
2212 return t; | |
2213 } | |
2214 | |
2215 /* Return TRUE iff EXPR_STMT is an empty list of | |
2216 expression statements. */ | |
2217 | |
2218 bool | |
2219 empty_expr_stmt_p (tree expr_stmt) | |
2220 { | |
2221 tree body = NULL_TREE; | |
2222 | |
2223 if (expr_stmt == void_node) | |
2224 return true; | |
2225 | |
2226 if (expr_stmt) | |
2227 { | |
2228 if (TREE_CODE (expr_stmt) == EXPR_STMT) | |
2229 body = EXPR_STMT_EXPR (expr_stmt); | |
2230 else if (TREE_CODE (expr_stmt) == STATEMENT_LIST) | |
2231 body = expr_stmt; | |
2232 } | |
2233 | |
2234 if (body) | |
2235 { | |
2236 if (TREE_CODE (body) == STATEMENT_LIST) | |
2237 return tsi_end_p (tsi_start (body)); | |
2238 else | |
2239 return empty_expr_stmt_p (body); | |
2240 } | |
2241 return false; | |
2242 } | |
2243 | |
2244 /* Perform Koenig lookup. FN is the postfix-expression representing | |
2245 the function (or functions) to call; ARGS are the arguments to the | |
2246 call. Returns the functions to be considered by overload resolution. */ | |
2247 | |
2248 cp_expr | |
2249 perform_koenig_lookup (cp_expr fn, vec<tree, va_gc> *args, | |
2250 tsubst_flags_t complain) | |
2251 { | |
2252 tree identifier = NULL_TREE; | |
2253 tree functions = NULL_TREE; | |
2254 tree tmpl_args = NULL_TREE; | |
2255 bool template_id = false; | |
2256 location_t loc = fn.get_location (); | |
2257 | |
2258 if (TREE_CODE (fn) == TEMPLATE_ID_EXPR) | |
2259 { | |
2260 /* Use a separate flag to handle null args. */ | |
2261 template_id = true; | |
2262 tmpl_args = TREE_OPERAND (fn, 1); | |
2263 fn = TREE_OPERAND (fn, 0); | |
2264 } | |
2265 | |
2266 /* Find the name of the overloaded function. */ | |
2267 if (identifier_p (fn)) | |
2268 identifier = fn; | |
2269 else | |
2270 { | |
2271 functions = fn; | |
2272 identifier = OVL_NAME (functions); | |
2273 } | |
2274 | |
2275 /* A call to a namespace-scope function using an unqualified name. | |
2276 | |
2277 Do Koenig lookup -- unless any of the arguments are | |
2278 type-dependent. */ | |
2279 if (!any_type_dependent_arguments_p (args) | |
2280 && !any_dependent_template_arguments_p (tmpl_args)) | |
2281 { | |
2282 fn = lookup_arg_dependent (identifier, functions, args); | |
2283 if (!fn) | |
2284 { | |
2285 /* The unqualified name could not be resolved. */ | |
2286 if (complain & tf_error) | |
2287 fn = unqualified_fn_lookup_error (cp_expr (identifier, loc)); | |
2288 else | |
2289 fn = identifier; | |
2290 } | |
2291 } | |
2292 | |
2293 if (fn && template_id && fn != error_mark_node) | |
2294 fn = build2 (TEMPLATE_ID_EXPR, unknown_type_node, fn, tmpl_args); | |
2295 | |
2296 return fn; | |
2297 } | |
2298 | |
2299 /* Generate an expression for `FN (ARGS)'. This may change the | |
2300 contents of ARGS. | |
2301 | |
2302 If DISALLOW_VIRTUAL is true, the call to FN will be not generated | |
2303 as a virtual call, even if FN is virtual. (This flag is set when | |
2304 encountering an expression where the function name is explicitly | |
2305 qualified. For example a call to `X::f' never generates a virtual | |
2306 call.) | |
2307 | |
2308 Returns code for the call. */ | |
2309 | |
2310 tree | |
2311 finish_call_expr (tree fn, vec<tree, va_gc> **args, bool disallow_virtual, | |
2312 bool koenig_p, tsubst_flags_t complain) | |
2313 { | |
2314 tree result; | |
2315 tree orig_fn; | |
2316 vec<tree, va_gc> *orig_args = NULL; | |
2317 | |
2318 if (fn == error_mark_node) | |
2319 return error_mark_node; | |
2320 | |
2321 gcc_assert (!TYPE_P (fn)); | |
2322 | |
2323 /* If FN may be a FUNCTION_DECL obfuscated by force_paren_expr, undo | |
2324 it so that we can tell this is a call to a known function. */ | |
2325 fn = maybe_undo_parenthesized_ref (fn); | |
2326 | |
2327 orig_fn = fn; | |
2328 | |
2329 if (processing_template_decl) | |
2330 { | |
2331 /* If FN is a local extern declaration or set thereof, look them up | |
2332 again at instantiation time. */ | |
2333 if (is_overloaded_fn (fn)) | |
2334 { | |
2335 tree ifn = get_first_fn (fn); | |
2336 if (TREE_CODE (ifn) == FUNCTION_DECL | |
2337 && DECL_LOCAL_FUNCTION_P (ifn)) | |
2338 orig_fn = DECL_NAME (ifn); | |
2339 } | |
2340 | |
2341 /* If the call expression is dependent, build a CALL_EXPR node | |
2342 with no type; type_dependent_expression_p recognizes | |
2343 expressions with no type as being dependent. */ | |
2344 if (type_dependent_expression_p (fn) | |
2345 || any_type_dependent_arguments_p (*args)) | |
2346 { | |
2347 result = build_min_nt_call_vec (orig_fn, *args); | |
2348 SET_EXPR_LOCATION (result, EXPR_LOC_OR_LOC (fn, input_location)); | |
2349 KOENIG_LOOKUP_P (result) = koenig_p; | |
2350 if (is_overloaded_fn (fn)) | |
2351 { | |
2352 fn = get_fns (fn); | |
2353 lookup_keep (fn, true); | |
2354 } | |
2355 | |
2356 if (cfun) | |
2357 { | |
2358 bool abnormal = true; | |
2359 for (lkp_iterator iter (fn); abnormal && iter; ++iter) | |
2360 { | |
2361 tree fndecl = *iter; | |
2362 if (TREE_CODE (fndecl) != FUNCTION_DECL | |
2363 || !TREE_THIS_VOLATILE (fndecl)) | |
2364 abnormal = false; | |
2365 } | |
2366 /* FIXME: Stop warning about falling off end of non-void | |
2367 function. But this is wrong. Even if we only see | |
2368 no-return fns at this point, we could select a | |
2369 future-defined return fn during instantiation. Or | |
2370 vice-versa. */ | |
2371 if (abnormal) | |
2372 current_function_returns_abnormally = 1; | |
2373 } | |
2374 return result; | |
2375 } | |
2376 orig_args = make_tree_vector_copy (*args); | |
2377 if (!BASELINK_P (fn) | |
2378 && TREE_CODE (fn) != PSEUDO_DTOR_EXPR | |
2379 && TREE_TYPE (fn) != unknown_type_node) | |
2380 fn = build_non_dependent_expr (fn); | |
2381 make_args_non_dependent (*args); | |
2382 } | |
2383 | |
2384 if (TREE_CODE (fn) == COMPONENT_REF) | |
2385 { | |
2386 tree member = TREE_OPERAND (fn, 1); | |
2387 if (BASELINK_P (member)) | |
2388 { | |
2389 tree object = TREE_OPERAND (fn, 0); | |
2390 return build_new_method_call (object, member, | |
2391 args, NULL_TREE, | |
2392 (disallow_virtual | |
2393 ? LOOKUP_NORMAL | LOOKUP_NONVIRTUAL | |
2394 : LOOKUP_NORMAL), | |
2395 /*fn_p=*/NULL, | |
2396 complain); | |
2397 } | |
2398 } | |
2399 | |
2400 /* Per 13.3.1.1, '(&f)(...)' is the same as '(f)(...)'. */ | |
2401 if (TREE_CODE (fn) == ADDR_EXPR | |
2402 && TREE_CODE (TREE_OPERAND (fn, 0)) == OVERLOAD) | |
2403 fn = TREE_OPERAND (fn, 0); | |
2404 | |
2405 if (is_overloaded_fn (fn)) | |
2406 fn = baselink_for_fns (fn); | |
2407 | |
2408 result = NULL_TREE; | |
2409 if (BASELINK_P (fn)) | |
2410 { | |
2411 tree object; | |
2412 | |
2413 /* A call to a member function. From [over.call.func]: | |
2414 | |
2415 If the keyword this is in scope and refers to the class of | |
2416 that member function, or a derived class thereof, then the | |
2417 function call is transformed into a qualified function call | |
2418 using (*this) as the postfix-expression to the left of the | |
2419 . operator.... [Otherwise] a contrived object of type T | |
2420 becomes the implied object argument. | |
2421 | |
2422 In this situation: | |
2423 | |
2424 struct A { void f(); }; | |
2425 struct B : public A {}; | |
2426 struct C : public A { void g() { B::f(); }}; | |
2427 | |
2428 "the class of that member function" refers to `A'. But 11.2 | |
2429 [class.access.base] says that we need to convert 'this' to B* as | |
2430 part of the access, so we pass 'B' to maybe_dummy_object. */ | |
2431 | |
2432 if (DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (get_first_fn (fn))) | |
2433 { | |
2434 /* A constructor call always uses a dummy object. (This constructor | |
2435 call which has the form A::A () is actually invalid and we are | |
2436 going to reject it later in build_new_method_call.) */ | |
2437 object = build_dummy_object (BINFO_TYPE (BASELINK_ACCESS_BINFO (fn))); | |
2438 } | |
2439 else | |
2440 object = maybe_dummy_object (BINFO_TYPE (BASELINK_ACCESS_BINFO (fn)), | |
2441 NULL); | |
2442 | |
2443 result = build_new_method_call (object, fn, args, NULL_TREE, | |
2444 (disallow_virtual | |
2445 ? LOOKUP_NORMAL|LOOKUP_NONVIRTUAL | |
2446 : LOOKUP_NORMAL), | |
2447 /*fn_p=*/NULL, | |
2448 complain); | |
2449 } | |
2450 else if (is_overloaded_fn (fn)) | |
2451 { | |
2452 /* If the function is an overloaded builtin, resolve it. */ | |
2453 if (TREE_CODE (fn) == FUNCTION_DECL | |
2454 && (DECL_BUILT_IN_CLASS (fn) == BUILT_IN_NORMAL | |
2455 || DECL_BUILT_IN_CLASS (fn) == BUILT_IN_MD)) | |
2456 result = resolve_overloaded_builtin (input_location, fn, *args); | |
2457 | |
2458 if (!result) | |
2459 { | |
2460 if (warn_sizeof_pointer_memaccess | |
2461 && (complain & tf_warning) | |
2462 && !vec_safe_is_empty (*args) | |
2463 && !processing_template_decl) | |
2464 { | |
2465 location_t sizeof_arg_loc[3]; | |
2466 tree sizeof_arg[3]; | |
2467 unsigned int i; | |
2468 for (i = 0; i < 3; i++) | |
2469 { | |
2470 tree t; | |
2471 | |
2472 sizeof_arg_loc[i] = UNKNOWN_LOCATION; | |
2473 sizeof_arg[i] = NULL_TREE; | |
2474 if (i >= (*args)->length ()) | |
2475 continue; | |
2476 t = (**args)[i]; | |
2477 if (TREE_CODE (t) != SIZEOF_EXPR) | |
2478 continue; | |
2479 if (SIZEOF_EXPR_TYPE_P (t)) | |
2480 sizeof_arg[i] = TREE_TYPE (TREE_OPERAND (t, 0)); | |
2481 else | |
2482 sizeof_arg[i] = TREE_OPERAND (t, 0); | |
2483 sizeof_arg_loc[i] = EXPR_LOCATION (t); | |
2484 } | |
2485 sizeof_pointer_memaccess_warning | |
2486 (sizeof_arg_loc, fn, *args, | |
2487 sizeof_arg, same_type_ignoring_top_level_qualifiers_p); | |
2488 } | |
2489 | |
2490 /* A call to a namespace-scope function. */ | |
2491 result = build_new_function_call (fn, args, complain); | |
2492 } | |
2493 } | |
2494 else if (TREE_CODE (fn) == PSEUDO_DTOR_EXPR) | |
2495 { | |
2496 if (!vec_safe_is_empty (*args)) | |
2497 error ("arguments to destructor are not allowed"); | |
2498 /* Mark the pseudo-destructor call as having side-effects so | |
2499 that we do not issue warnings about its use. */ | |
2500 result = build1 (NOP_EXPR, | |
2501 void_type_node, | |
2502 TREE_OPERAND (fn, 0)); | |
2503 TREE_SIDE_EFFECTS (result) = 1; | |
2504 } | |
2505 else if (CLASS_TYPE_P (TREE_TYPE (fn))) | |
2506 /* If the "function" is really an object of class type, it might | |
2507 have an overloaded `operator ()'. */ | |
2508 result = build_op_call (fn, args, complain); | |
2509 | |
2510 if (!result) | |
2511 /* A call where the function is unknown. */ | |
2512 result = cp_build_function_call_vec (fn, args, complain); | |
2513 | |
2514 if (processing_template_decl && result != error_mark_node) | |
2515 { | |
2516 if (INDIRECT_REF_P (result)) | |
2517 result = TREE_OPERAND (result, 0); | |
2518 result = build_call_vec (TREE_TYPE (result), orig_fn, orig_args); | |
2519 SET_EXPR_LOCATION (result, input_location); | |
2520 KOENIG_LOOKUP_P (result) = koenig_p; | |
2521 release_tree_vector (orig_args); | |
2522 result = convert_from_reference (result); | |
2523 } | |
2524 | |
2525 /* Free or retain OVERLOADs from lookup. */ | |
2526 if (is_overloaded_fn (orig_fn)) | |
2527 lookup_keep (get_fns (orig_fn), processing_template_decl); | |
2528 | |
2529 return result; | |
2530 } | |
2531 | |
2532 /* Finish a call to a postfix increment or decrement or EXPR. (Which | |
2533 is indicated by CODE, which should be POSTINCREMENT_EXPR or | |
2534 POSTDECREMENT_EXPR.) */ | |
2535 | |
2536 cp_expr | |
2537 finish_increment_expr (cp_expr expr, enum tree_code code) | |
2538 { | |
2539 /* input_location holds the location of the trailing operator token. | |
2540 Build a location of the form: | |
2541 expr++ | |
2542 ~~~~^~ | |
2543 with the caret at the operator token, ranging from the start | |
2544 of EXPR to the end of the operator token. */ | |
2545 location_t combined_loc = make_location (input_location, | |
2546 expr.get_start (), | |
2547 get_finish (input_location)); | |
2548 cp_expr result = build_x_unary_op (combined_loc, code, expr, | |
2549 tf_warning_or_error); | |
2550 /* TODO: build_x_unary_op doesn't honor the location, so set it here. */ | |
2551 result.set_location (combined_loc); | |
2552 return result; | |
2553 } | |
2554 | |
2555 /* Finish a use of `this'. Returns an expression for `this'. */ | |
2556 | |
2557 tree | |
2558 finish_this_expr (void) | |
2559 { | |
2560 tree result = NULL_TREE; | |
2561 | |
2562 if (current_class_ptr) | |
2563 { | |
2564 tree type = TREE_TYPE (current_class_ref); | |
2565 | |
2566 /* In a lambda expression, 'this' refers to the captured 'this'. */ | |
2567 if (LAMBDA_TYPE_P (type)) | |
2568 result = lambda_expr_this_capture (CLASSTYPE_LAMBDA_EXPR (type), true); | |
2569 else | |
2570 result = current_class_ptr; | |
2571 } | |
2572 | |
2573 if (result) | |
2574 /* The keyword 'this' is a prvalue expression. */ | |
2575 return rvalue (result); | |
2576 | |
2577 tree fn = current_nonlambda_function (); | |
2578 if (fn && DECL_STATIC_FUNCTION_P (fn)) | |
2579 error ("%<this%> is unavailable for static member functions"); | |
2580 else if (fn) | |
2581 error ("invalid use of %<this%> in non-member function"); | |
2582 else | |
2583 error ("invalid use of %<this%> at top level"); | |
2584 return error_mark_node; | |
2585 } | |
2586 | |
2587 /* Finish a pseudo-destructor expression. If SCOPE is NULL, the | |
2588 expression was of the form `OBJECT.~DESTRUCTOR' where DESTRUCTOR is | |
2589 the TYPE for the type given. If SCOPE is non-NULL, the expression | |
2590 was of the form `OBJECT.SCOPE::~DESTRUCTOR'. */ | |
2591 | |
2592 tree | |
2593 finish_pseudo_destructor_expr (tree object, tree scope, tree destructor, | |
2594 location_t loc) | |
2595 { | |
2596 if (object == error_mark_node || destructor == error_mark_node) | |
2597 return error_mark_node; | |
2598 | |
2599 gcc_assert (TYPE_P (destructor)); | |
2600 | |
2601 if (!processing_template_decl) | |
2602 { | |
2603 if (scope == error_mark_node) | |
2604 { | |
2605 error_at (loc, "invalid qualifying scope in pseudo-destructor name"); | |
2606 return error_mark_node; | |
2607 } | |
2608 if (is_auto (destructor)) | |
2609 destructor = TREE_TYPE (object); | |
2610 if (scope && TYPE_P (scope) && !check_dtor_name (scope, destructor)) | |
2611 { | |
2612 error_at (loc, | |
2613 "qualified type %qT does not match destructor name ~%qT", | |
2614 scope, destructor); | |
2615 return error_mark_node; | |
2616 } | |
2617 | |
2618 | |
2619 /* [expr.pseudo] says both: | |
2620 | |
2621 The type designated by the pseudo-destructor-name shall be | |
2622 the same as the object type. | |
2623 | |
2624 and: | |
2625 | |
2626 The cv-unqualified versions of the object type and of the | |
2627 type designated by the pseudo-destructor-name shall be the | |
2628 same type. | |
2629 | |
2630 We implement the more generous second sentence, since that is | |
2631 what most other compilers do. */ | |
2632 if (!same_type_ignoring_top_level_qualifiers_p (TREE_TYPE (object), | |
2633 destructor)) | |
2634 { | |
2635 error_at (loc, "%qE is not of type %qT", object, destructor); | |
2636 return error_mark_node; | |
2637 } | |
2638 } | |
2639 | |
2640 return build3_loc (loc, PSEUDO_DTOR_EXPR, void_type_node, object, | |
2641 scope, destructor); | |
2642 } | |
2643 | |
2644 /* Finish an expression of the form CODE EXPR. */ | |
2645 | |
2646 cp_expr | |
2647 finish_unary_op_expr (location_t op_loc, enum tree_code code, cp_expr expr, | |
2648 tsubst_flags_t complain) | |
2649 { | |
2650 /* Build a location of the form: | |
2651 ++expr | |
2652 ^~~~~~ | |
2653 with the caret at the operator token, ranging from the start | |
2654 of the operator token to the end of EXPR. */ | |
2655 location_t combined_loc = make_location (op_loc, | |
2656 op_loc, expr.get_finish ()); | |
2657 cp_expr result = build_x_unary_op (combined_loc, code, expr, complain); | |
2658 /* TODO: build_x_unary_op doesn't always honor the location. */ | |
2659 result.set_location (combined_loc); | |
2660 | |
2661 tree result_ovl, expr_ovl; | |
2662 | |
2663 if (!(complain & tf_warning)) | |
2664 return result; | |
2665 | |
2666 result_ovl = result; | |
2667 expr_ovl = expr; | |
2668 | |
2669 if (!processing_template_decl) | |
2670 expr_ovl = cp_fully_fold (expr_ovl); | |
2671 | |
2672 if (!CONSTANT_CLASS_P (expr_ovl) | |
2673 || TREE_OVERFLOW_P (expr_ovl)) | |
2674 return result; | |
2675 | |
2676 if (!processing_template_decl) | |
2677 result_ovl = cp_fully_fold (result_ovl); | |
2678 | |
2679 if (CONSTANT_CLASS_P (result_ovl) && TREE_OVERFLOW_P (result_ovl)) | |
2680 overflow_warning (combined_loc, result_ovl); | |
2681 | |
2682 return result; | |
2683 } | |
2684 | |
2685 /* Finish a compound-literal expression or C++11 functional cast with aggregate | |
2686 initializer. TYPE is the type to which the CONSTRUCTOR in COMPOUND_LITERAL | |
2687 is being cast. */ | |
2688 | |
2689 tree | |
2690 finish_compound_literal (tree type, tree compound_literal, | |
2691 tsubst_flags_t complain, | |
2692 fcl_t fcl_context) | |
2693 { | |
2694 if (type == error_mark_node) | |
2695 return error_mark_node; | |
2696 | |
2697 if (TREE_CODE (type) == REFERENCE_TYPE) | |
2698 { | |
2699 compound_literal | |
2700 = finish_compound_literal (TREE_TYPE (type), compound_literal, | |
2701 complain, fcl_context); | |
2702 return cp_build_c_cast (type, compound_literal, complain); | |
2703 } | |
2704 | |
2705 if (!TYPE_OBJ_P (type)) | |
2706 { | |
2707 if (complain & tf_error) | |
2708 error ("compound literal of non-object type %qT", type); | |
2709 return error_mark_node; | |
2710 } | |
2711 | |
2712 if (tree anode = type_uses_auto (type)) | |
2713 if (CLASS_PLACEHOLDER_TEMPLATE (anode)) | |
2714 { | |
2715 type = do_auto_deduction (type, compound_literal, anode, complain, | |
2716 adc_variable_type); | |
2717 if (type == error_mark_node) | |
2718 return error_mark_node; | |
2719 } | |
2720 | |
2721 if (processing_template_decl) | |
2722 { | |
2723 TREE_TYPE (compound_literal) = type; | |
2724 /* Mark the expression as a compound literal. */ | |
2725 TREE_HAS_CONSTRUCTOR (compound_literal) = 1; | |
2726 if (fcl_context == fcl_c99) | |
2727 CONSTRUCTOR_C99_COMPOUND_LITERAL (compound_literal) = 1; | |
2728 return compound_literal; | |
2729 } | |
2730 | |
2731 type = complete_type (type); | |
2732 | |
2733 if (TYPE_NON_AGGREGATE_CLASS (type)) | |
2734 { | |
2735 /* Trying to deal with a CONSTRUCTOR instead of a TREE_LIST | |
2736 everywhere that deals with function arguments would be a pain, so | |
2737 just wrap it in a TREE_LIST. The parser set a flag so we know | |
2738 that it came from T{} rather than T({}). */ | |
2739 CONSTRUCTOR_IS_DIRECT_INIT (compound_literal) = 1; | |
2740 compound_literal = build_tree_list (NULL_TREE, compound_literal); | |
2741 return build_functional_cast (type, compound_literal, complain); | |
2742 } | |
2743 | |
2744 if (TREE_CODE (type) == ARRAY_TYPE | |
2745 && check_array_initializer (NULL_TREE, type, compound_literal)) | |
2746 return error_mark_node; | |
2747 compound_literal = reshape_init (type, compound_literal, complain); | |
2748 if (SCALAR_TYPE_P (type) | |
2749 && !BRACE_ENCLOSED_INITIALIZER_P (compound_literal) | |
2750 && !check_narrowing (type, compound_literal, complain)) | |
2751 return error_mark_node; | |
2752 if (TREE_CODE (type) == ARRAY_TYPE | |
2753 && TYPE_DOMAIN (type) == NULL_TREE) | |
2754 { | |
2755 cp_complete_array_type_or_error (&type, compound_literal, | |
2756 false, complain); | |
2757 if (type == error_mark_node) | |
2758 return error_mark_node; | |
2759 } | |
2760 compound_literal = digest_init_flags (type, compound_literal, LOOKUP_NORMAL, | |
2761 complain); | |
2762 if (TREE_CODE (compound_literal) == CONSTRUCTOR) | |
2763 { | |
2764 TREE_HAS_CONSTRUCTOR (compound_literal) = true; | |
2765 if (fcl_context == fcl_c99) | |
2766 CONSTRUCTOR_C99_COMPOUND_LITERAL (compound_literal) = 1; | |
2767 } | |
2768 | |
2769 /* Put static/constant array temporaries in static variables. */ | |
2770 /* FIXME all C99 compound literals should be variables rather than C++ | |
2771 temporaries, unless they are used as an aggregate initializer. */ | |
2772 if ((!at_function_scope_p () || CP_TYPE_CONST_P (type)) | |
2773 && fcl_context == fcl_c99 | |
2774 && TREE_CODE (type) == ARRAY_TYPE | |
2775 && !TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type) | |
2776 && initializer_constant_valid_p (compound_literal, type)) | |
2777 { | |
2778 tree decl = create_temporary_var (type); | |
2779 DECL_INITIAL (decl) = compound_literal; | |
2780 TREE_STATIC (decl) = 1; | |
2781 if (literal_type_p (type) && CP_TYPE_CONST_NON_VOLATILE_P (type)) | |
2782 { | |
2783 /* 5.19 says that a constant expression can include an | |
2784 lvalue-rvalue conversion applied to "a glvalue of literal type | |
2785 that refers to a non-volatile temporary object initialized | |
2786 with a constant expression". Rather than try to communicate | |
2787 that this VAR_DECL is a temporary, just mark it constexpr. */ | |
2788 DECL_DECLARED_CONSTEXPR_P (decl) = true; | |
2789 DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (decl) = true; | |
2790 TREE_CONSTANT (decl) = true; | |
2791 } | |
2792 cp_apply_type_quals_to_decl (cp_type_quals (type), decl); | |
2793 decl = pushdecl_top_level (decl); | |
2794 DECL_NAME (decl) = make_anon_name (); | |
2795 SET_DECL_ASSEMBLER_NAME (decl, DECL_NAME (decl)); | |
2796 /* Make sure the destructor is callable. */ | |
2797 tree clean = cxx_maybe_build_cleanup (decl, complain); | |
2798 if (clean == error_mark_node) | |
2799 return error_mark_node; | |
2800 return decl; | |
2801 } | |
2802 | |
2803 /* Represent other compound literals with TARGET_EXPR so we produce | |
2804 an lvalue, but can elide copies. */ | |
2805 if (!VECTOR_TYPE_P (type)) | |
2806 compound_literal = get_target_expr_sfinae (compound_literal, complain); | |
2807 | |
2808 return compound_literal; | |
2809 } | |
2810 | |
2811 /* Return the declaration for the function-name variable indicated by | |
2812 ID. */ | |
2813 | |
2814 tree | |
2815 finish_fname (tree id) | |
2816 { | |
2817 tree decl; | |
2818 | |
2819 decl = fname_decl (input_location, C_RID_CODE (id), id); | |
2820 if (processing_template_decl && current_function_decl | |
2821 && decl != error_mark_node) | |
2822 decl = DECL_NAME (decl); | |
2823 return decl; | |
2824 } | |
2825 | |
2826 /* Finish a translation unit. */ | |
2827 | |
2828 void | |
2829 finish_translation_unit (void) | |
2830 { | |
2831 /* In case there were missing closebraces, | |
2832 get us back to the global binding level. */ | |
2833 pop_everything (); | |
2834 while (current_namespace != global_namespace) | |
2835 pop_namespace (); | |
2836 | |
2837 /* Do file scope __FUNCTION__ et al. */ | |
2838 finish_fname_decls (); | |
2839 } | |
2840 | |
2841 /* Finish a template type parameter, specified as AGGR IDENTIFIER. | |
2842 Returns the parameter. */ | |
2843 | |
2844 tree | |
2845 finish_template_type_parm (tree aggr, tree identifier) | |
2846 { | |
2847 if (aggr != class_type_node) | |
2848 { | |
2849 permerror (input_location, "template type parameters must use the keyword %<class%> or %<typename%>"); | |
2850 aggr = class_type_node; | |
2851 } | |
2852 | |
2853 return build_tree_list (aggr, identifier); | |
2854 } | |
2855 | |
2856 /* Finish a template template parameter, specified as AGGR IDENTIFIER. | |
2857 Returns the parameter. */ | |
2858 | |
2859 tree | |
2860 finish_template_template_parm (tree aggr, tree identifier) | |
2861 { | |
2862 tree decl = build_decl (input_location, | |
2863 TYPE_DECL, identifier, NULL_TREE); | |
2864 | |
2865 tree tmpl = build_lang_decl (TEMPLATE_DECL, identifier, NULL_TREE); | |
2866 DECL_TEMPLATE_PARMS (tmpl) = current_template_parms; | |
2867 DECL_TEMPLATE_RESULT (tmpl) = decl; | |
2868 DECL_ARTIFICIAL (decl) = 1; | |
2869 | |
2870 // Associate the constraints with the underlying declaration, | |
2871 // not the template. | |
2872 tree reqs = TEMPLATE_PARMS_CONSTRAINTS (current_template_parms); | |
2873 tree constr = build_constraints (reqs, NULL_TREE); | |
2874 set_constraints (decl, constr); | |
2875 | |
2876 end_template_decl (); | |
2877 | |
2878 gcc_assert (DECL_TEMPLATE_PARMS (tmpl)); | |
2879 | |
2880 check_default_tmpl_args (decl, DECL_TEMPLATE_PARMS (tmpl), | |
2881 /*is_primary=*/true, /*is_partial=*/false, | |
2882 /*is_friend=*/0); | |
2883 | |
2884 return finish_template_type_parm (aggr, tmpl); | |
2885 } | |
2886 | |
2887 /* ARGUMENT is the default-argument value for a template template | |
2888 parameter. If ARGUMENT is invalid, issue error messages and return | |
2889 the ERROR_MARK_NODE. Otherwise, ARGUMENT itself is returned. */ | |
2890 | |
2891 tree | |
2892 check_template_template_default_arg (tree argument) | |
2893 { | |
2894 if (TREE_CODE (argument) != TEMPLATE_DECL | |
2895 && TREE_CODE (argument) != TEMPLATE_TEMPLATE_PARM | |
2896 && TREE_CODE (argument) != UNBOUND_CLASS_TEMPLATE) | |
2897 { | |
2898 if (TREE_CODE (argument) == TYPE_DECL) | |
2899 error ("invalid use of type %qT as a default value for a template " | |
2900 "template-parameter", TREE_TYPE (argument)); | |
2901 else | |
2902 error ("invalid default argument for a template template parameter"); | |
2903 return error_mark_node; | |
2904 } | |
2905 | |
2906 return argument; | |
2907 } | |
2908 | |
2909 /* Begin a class definition, as indicated by T. */ | |
2910 | |
2911 tree | |
2912 begin_class_definition (tree t) | |
2913 { | |
2914 if (error_operand_p (t) || error_operand_p (TYPE_MAIN_DECL (t))) | |
2915 return error_mark_node; | |
2916 | |
2917 if (processing_template_parmlist) | |
2918 { | |
2919 error ("definition of %q#T inside template parameter list", t); | |
2920 return error_mark_node; | |
2921 } | |
2922 | |
2923 /* According to the C++ ABI, decimal classes defined in ISO/IEC TR 24733 | |
2924 are passed the same as decimal scalar types. */ | |
2925 if (TREE_CODE (t) == RECORD_TYPE | |
2926 && !processing_template_decl) | |
2927 { | |
2928 tree ns = TYPE_CONTEXT (t); | |
2929 if (ns && TREE_CODE (ns) == NAMESPACE_DECL | |
2930 && DECL_CONTEXT (ns) == std_node | |
2931 && DECL_NAME (ns) | |
2932 && id_equal (DECL_NAME (ns), "decimal")) | |
2933 { | |
2934 const char *n = TYPE_NAME_STRING (t); | |
2935 if ((strcmp (n, "decimal32") == 0) | |
2936 || (strcmp (n, "decimal64") == 0) | |
2937 || (strcmp (n, "decimal128") == 0)) | |
2938 TYPE_TRANSPARENT_AGGR (t) = 1; | |
2939 } | |
2940 } | |
2941 | |
2942 /* A non-implicit typename comes from code like: | |
2943 | |
2944 template <typename T> struct A { | |
2945 template <typename U> struct A<T>::B ... | |
2946 | |
2947 This is erroneous. */ | |
2948 else if (TREE_CODE (t) == TYPENAME_TYPE) | |
2949 { | |
2950 error ("invalid definition of qualified type %qT", t); | |
2951 t = error_mark_node; | |
2952 } | |
2953 | |
2954 if (t == error_mark_node || ! MAYBE_CLASS_TYPE_P (t)) | |
2955 { | |
2956 t = make_class_type (RECORD_TYPE); | |
2957 pushtag (make_anon_name (), t, /*tag_scope=*/ts_current); | |
2958 } | |
2959 | |
2960 if (TYPE_BEING_DEFINED (t)) | |
2961 { | |
2962 t = make_class_type (TREE_CODE (t)); | |
2963 pushtag (TYPE_IDENTIFIER (t), t, /*tag_scope=*/ts_current); | |
2964 } | |
2965 maybe_process_partial_specialization (t); | |
2966 pushclass (t); | |
2967 TYPE_BEING_DEFINED (t) = 1; | |
2968 class_binding_level->defining_class_p = 1; | |
2969 | |
2970 if (flag_pack_struct) | |
2971 { | |
2972 tree v; | |
2973 TYPE_PACKED (t) = 1; | |
2974 /* Even though the type is being defined for the first time | |
2975 here, there might have been a forward declaration, so there | |
2976 might be cv-qualified variants of T. */ | |
2977 for (v = TYPE_NEXT_VARIANT (t); v; v = TYPE_NEXT_VARIANT (v)) | |
2978 TYPE_PACKED (v) = 1; | |
2979 } | |
2980 /* Reset the interface data, at the earliest possible | |
2981 moment, as it might have been set via a class foo; | |
2982 before. */ | |
2983 if (! TYPE_UNNAMED_P (t)) | |
2984 { | |
2985 struct c_fileinfo *finfo = \ | |
2986 get_fileinfo (LOCATION_FILE (input_location)); | |
2987 CLASSTYPE_INTERFACE_ONLY (t) = finfo->interface_only; | |
2988 SET_CLASSTYPE_INTERFACE_UNKNOWN_X | |
2989 (t, finfo->interface_unknown); | |
2990 } | |
2991 reset_specialization(); | |
2992 | |
2993 /* Make a declaration for this class in its own scope. */ | |
2994 build_self_reference (); | |
2995 | |
2996 return t; | |
2997 } | |
2998 | |
2999 /* Finish the member declaration given by DECL. */ | |
3000 | |
3001 void | |
3002 finish_member_declaration (tree decl) | |
3003 { | |
3004 if (decl == error_mark_node || decl == NULL_TREE) | |
3005 return; | |
3006 | |
3007 if (decl == void_type_node) | |
3008 /* The COMPONENT was a friend, not a member, and so there's | |
3009 nothing for us to do. */ | |
3010 return; | |
3011 | |
3012 /* We should see only one DECL at a time. */ | |
3013 gcc_assert (DECL_CHAIN (decl) == NULL_TREE); | |
3014 | |
3015 /* Don't add decls after definition. */ | |
3016 gcc_assert (TYPE_BEING_DEFINED (current_class_type) | |
3017 /* We can add lambda types when late parsing default | |
3018 arguments. */ | |
3019 || LAMBDA_TYPE_P (TREE_TYPE (decl))); | |
3020 | |
3021 /* Set up access control for DECL. */ | |
3022 TREE_PRIVATE (decl) | |
3023 = (current_access_specifier == access_private_node); | |
3024 TREE_PROTECTED (decl) | |
3025 = (current_access_specifier == access_protected_node); | |
3026 if (TREE_CODE (decl) == TEMPLATE_DECL) | |
3027 { | |
3028 TREE_PRIVATE (DECL_TEMPLATE_RESULT (decl)) = TREE_PRIVATE (decl); | |
3029 TREE_PROTECTED (DECL_TEMPLATE_RESULT (decl)) = TREE_PROTECTED (decl); | |
3030 } | |
3031 | |
3032 /* Mark the DECL as a member of the current class, unless it's | |
3033 a member of an enumeration. */ | |
3034 if (TREE_CODE (decl) != CONST_DECL) | |
3035 DECL_CONTEXT (decl) = current_class_type; | |
3036 | |
3037 if (TREE_CODE (decl) == USING_DECL) | |
3038 /* For now, ignore class-scope USING_DECLS, so that debugging | |
3039 backends do not see them. */ | |
3040 DECL_IGNORED_P (decl) = 1; | |
3041 | |
3042 /* Check for bare parameter packs in the non-static data member | |
3043 declaration. */ | |
3044 if (TREE_CODE (decl) == FIELD_DECL) | |
3045 { | |
3046 if (check_for_bare_parameter_packs (TREE_TYPE (decl))) | |
3047 TREE_TYPE (decl) = error_mark_node; | |
3048 if (check_for_bare_parameter_packs (DECL_ATTRIBUTES (decl))) | |
3049 DECL_ATTRIBUTES (decl) = NULL_TREE; | |
3050 } | |
3051 | |
3052 /* [dcl.link] | |
3053 | |
3054 A C language linkage is ignored for the names of class members | |
3055 and the member function type of class member functions. */ | |
3056 if (DECL_LANG_SPECIFIC (decl)) | |
3057 SET_DECL_LANGUAGE (decl, lang_cplusplus); | |
3058 | |
3059 bool add = false; | |
3060 | |
3061 /* Functions and non-functions are added differently. */ | |
3062 if (DECL_DECLARES_FUNCTION_P (decl)) | |
3063 add = add_method (current_class_type, decl, false); | |
3064 /* Enter the DECL into the scope of the class, if the class | |
3065 isn't a closure (whose fields are supposed to be unnamed). */ | |
3066 else if (CLASSTYPE_LAMBDA_EXPR (current_class_type) | |
3067 || pushdecl_class_level (decl)) | |
3068 add = true; | |
3069 | |
3070 if (add) | |
3071 { | |
3072 /* All TYPE_DECLs go at the end of TYPE_FIELDS. Ordinary fields | |
3073 go at the beginning. The reason is that | |
3074 legacy_nonfn_member_lookup searches the list in order, and we | |
3075 want a field name to override a type name so that the "struct | |
3076 stat hack" will work. In particular: | |
3077 | |
3078 struct S { enum E { }; static const int E = 5; int ary[S::E]; } s; | |
3079 | |
3080 is valid. */ | |
3081 | |
3082 if (TREE_CODE (decl) == TYPE_DECL) | |
3083 TYPE_FIELDS (current_class_type) | |
3084 = chainon (TYPE_FIELDS (current_class_type), decl); | |
3085 else | |
3086 { | |
3087 DECL_CHAIN (decl) = TYPE_FIELDS (current_class_type); | |
3088 TYPE_FIELDS (current_class_type) = decl; | |
3089 } | |
3090 | |
3091 maybe_add_class_template_decl_list (current_class_type, decl, | |
3092 /*friend_p=*/0); | |
3093 } | |
3094 } | |
3095 | |
3096 /* Finish processing a complete template declaration. The PARMS are | |
3097 the template parameters. */ | |
3098 | |
3099 void | |
3100 finish_template_decl (tree parms) | |
3101 { | |
3102 if (parms) | |
3103 end_template_decl (); | |
3104 else | |
3105 end_specialization (); | |
3106 } | |
3107 | |
3108 // Returns the template type of the class scope being entered. If we're | |
3109 // entering a constrained class scope. TYPE is the class template | |
3110 // scope being entered and we may need to match the intended type with | |
3111 // a constrained specialization. For example: | |
3112 // | |
3113 // template<Object T> | |
3114 // struct S { void f(); }; #1 | |
3115 // | |
3116 // template<Object T> | |
3117 // void S<T>::f() { } #2 | |
3118 // | |
3119 // We check, in #2, that S<T> refers precisely to the type declared by | |
3120 // #1 (i.e., that the constraints match). Note that the following should | |
3121 // be an error since there is no specialization of S<T> that is | |
3122 // unconstrained, but this is not diagnosed here. | |
3123 // | |
3124 // template<typename T> | |
3125 // void S<T>::f() { } | |
3126 // | |
3127 // We cannot diagnose this problem here since this function also matches | |
3128 // qualified template names that are not part of a definition. For example: | |
3129 // | |
3130 // template<Integral T, Floating_point U> | |
3131 // typename pair<T, U>::first_type void f(T, U); | |
3132 // | |
3133 // Here, it is unlikely that there is a partial specialization of | |
3134 // pair constrained for for Integral and Floating_point arguments. | |
3135 // | |
3136 // The general rule is: if a constrained specialization with matching | |
3137 // constraints is found return that type. Also note that if TYPE is not a | |
3138 // class-type (e.g. a typename type), then no fixup is needed. | |
3139 | |
3140 static tree | |
3141 fixup_template_type (tree type) | |
3142 { | |
3143 // Find the template parameter list at the a depth appropriate to | |
3144 // the scope we're trying to enter. | |
3145 tree parms = current_template_parms; | |
3146 int depth = template_class_depth (type); | |
3147 for (int n = processing_template_decl; n > depth && parms; --n) | |
3148 parms = TREE_CHAIN (parms); | |
3149 if (!parms) | |
3150 return type; | |
3151 tree cur_reqs = TEMPLATE_PARMS_CONSTRAINTS (parms); | |
3152 tree cur_constr = build_constraints (cur_reqs, NULL_TREE); | |
3153 | |
3154 // Search for a specialization whose type and constraints match. | |
3155 tree tmpl = CLASSTYPE_TI_TEMPLATE (type); | |
3156 tree specs = DECL_TEMPLATE_SPECIALIZATIONS (tmpl); | |
3157 while (specs) | |
3158 { | |
3159 tree spec_constr = get_constraints (TREE_VALUE (specs)); | |
3160 | |
3161 // If the type and constraints match a specialization, then we | |
3162 // are entering that type. | |
3163 if (same_type_p (type, TREE_TYPE (specs)) | |
3164 && equivalent_constraints (cur_constr, spec_constr)) | |
3165 return TREE_TYPE (specs); | |
3166 specs = TREE_CHAIN (specs); | |
3167 } | |
3168 | |
3169 // If no specialization matches, then must return the type | |
3170 // previously found. | |
3171 return type; | |
3172 } | |
3173 | |
3174 /* Finish processing a template-id (which names a type) of the form | |
3175 NAME < ARGS >. Return the TYPE_DECL for the type named by the | |
3176 template-id. If ENTERING_SCOPE is nonzero we are about to enter | |
3177 the scope of template-id indicated. */ | |
3178 | |
3179 tree | |
3180 finish_template_type (tree name, tree args, int entering_scope) | |
3181 { | |
3182 tree type; | |
3183 | |
3184 type = lookup_template_class (name, args, | |
3185 NULL_TREE, NULL_TREE, entering_scope, | |
3186 tf_warning_or_error | tf_user); | |
3187 | |
3188 /* If we might be entering the scope of a partial specialization, | |
3189 find the one with the right constraints. */ | |
3190 if (flag_concepts | |
3191 && entering_scope | |
3192 && CLASS_TYPE_P (type) | |
3193 && CLASSTYPE_TEMPLATE_INFO (type) | |
3194 && dependent_type_p (type) | |
3195 && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (type))) | |
3196 type = fixup_template_type (type); | |
3197 | |
3198 if (type == error_mark_node) | |
3199 return type; | |
3200 else if (CLASS_TYPE_P (type) && !alias_type_or_template_p (type)) | |
3201 return TYPE_STUB_DECL (type); | |
3202 else | |
3203 return TYPE_NAME (type); | |
3204 } | |
3205 | |
3206 /* Finish processing a BASE_CLASS with the indicated ACCESS_SPECIFIER. | |
3207 Return a TREE_LIST containing the ACCESS_SPECIFIER and the | |
3208 BASE_CLASS, or NULL_TREE if an error occurred. The | |
3209 ACCESS_SPECIFIER is one of | |
3210 access_{default,public,protected_private}_node. For a virtual base | |
3211 we set TREE_TYPE. */ | |
3212 | |
3213 tree | |
3214 finish_base_specifier (tree base, tree access, bool virtual_p) | |
3215 { | |
3216 tree result; | |
3217 | |
3218 if (base == error_mark_node) | |
3219 { | |
3220 error ("invalid base-class specification"); | |
3221 result = NULL_TREE; | |
3222 } | |
3223 else if (! MAYBE_CLASS_TYPE_P (base)) | |
3224 { | |
3225 error ("%qT is not a class type", base); | |
3226 result = NULL_TREE; | |
3227 } | |
3228 else | |
3229 { | |
3230 if (cp_type_quals (base) != 0) | |
3231 { | |
3232 /* DR 484: Can a base-specifier name a cv-qualified | |
3233 class type? */ | |
3234 base = TYPE_MAIN_VARIANT (base); | |
3235 } | |
3236 result = build_tree_list (access, base); | |
3237 if (virtual_p) | |
3238 TREE_TYPE (result) = integer_type_node; | |
3239 } | |
3240 | |
3241 return result; | |
3242 } | |
3243 | |
3244 /* If FNS is a member function, a set of member functions, or a | |
3245 template-id referring to one or more member functions, return a | |
3246 BASELINK for FNS, incorporating the current access context. | |
3247 Otherwise, return FNS unchanged. */ | |
3248 | |
3249 tree | |
3250 baselink_for_fns (tree fns) | |
3251 { | |
3252 tree scope; | |
3253 tree cl; | |
3254 | |
3255 if (BASELINK_P (fns) | |
3256 || error_operand_p (fns)) | |
3257 return fns; | |
3258 | |
3259 scope = ovl_scope (fns); | |
3260 if (!CLASS_TYPE_P (scope)) | |
3261 return fns; | |
3262 | |
3263 cl = currently_open_derived_class (scope); | |
3264 if (!cl) | |
3265 cl = scope; | |
3266 cl = TYPE_BINFO (cl); | |
3267 return build_baselink (cl, cl, fns, /*optype=*/NULL_TREE); | |
3268 } | |
3269 | |
3270 /* Returns true iff DECL is a variable from a function outside | |
3271 the current one. */ | |
3272 | |
3273 static bool | |
3274 outer_var_p (tree decl) | |
3275 { | |
3276 return ((VAR_P (decl) || TREE_CODE (decl) == PARM_DECL) | |
3277 && DECL_FUNCTION_SCOPE_P (decl) | |
3278 /* Don't get confused by temporaries. */ | |
3279 && DECL_NAME (decl) | |
3280 && (DECL_CONTEXT (decl) != current_function_decl | |
3281 || parsing_nsdmi ())); | |
3282 } | |
3283 | |
3284 /* As above, but also checks that DECL is automatic. */ | |
3285 | |
3286 bool | |
3287 outer_automatic_var_p (tree decl) | |
3288 { | |
3289 return (outer_var_p (decl) | |
3290 && !TREE_STATIC (decl)); | |
3291 } | |
3292 | |
3293 /* DECL satisfies outer_automatic_var_p. Possibly complain about it or | |
3294 rewrite it for lambda capture. */ | |
3295 | |
3296 tree | |
3297 process_outer_var_ref (tree decl, tsubst_flags_t complain, bool force_use) | |
3298 { | |
3299 if (cp_unevaluated_operand) | |
3300 /* It's not a use (3.2) if we're in an unevaluated context. */ | |
3301 return decl; | |
3302 if (decl == error_mark_node) | |
3303 return decl; | |
3304 | |
3305 tree context = DECL_CONTEXT (decl); | |
3306 tree containing_function = current_function_decl; | |
3307 tree lambda_stack = NULL_TREE; | |
3308 tree lambda_expr = NULL_TREE; | |
3309 tree initializer = convert_from_reference (decl); | |
3310 | |
3311 /* Mark it as used now even if the use is ill-formed. */ | |
3312 if (!mark_used (decl, complain)) | |
3313 return error_mark_node; | |
3314 | |
3315 if (parsing_nsdmi ()) | |
3316 containing_function = NULL_TREE; | |
3317 | |
3318 /* Core issue 696: Only an odr-use of an outer automatic variable causes a | |
3319 capture (or error), and a constant variable can decay to a prvalue | |
3320 constant without odr-use. So don't capture yet. */ | |
3321 if (decl_constant_var_p (decl) && !force_use) | |
3322 return decl; | |
3323 | |
3324 if (containing_function && LAMBDA_FUNCTION_P (containing_function)) | |
3325 { | |
3326 /* Check whether we've already built a proxy. */ | |
3327 tree var = decl; | |
3328 while (is_normal_capture_proxy (var)) | |
3329 var = DECL_CAPTURED_VARIABLE (var); | |
3330 tree d = retrieve_local_specialization (var); | |
3331 | |
3332 if (d && d != decl && is_capture_proxy (d)) | |
3333 { | |
3334 if (DECL_CONTEXT (d) == containing_function) | |
3335 /* We already have an inner proxy. */ | |
3336 return d; | |
3337 else | |
3338 /* We need to capture an outer proxy. */ | |
3339 return process_outer_var_ref (d, complain, force_use); | |
3340 } | |
3341 } | |
3342 | |
3343 /* If we are in a lambda function, we can move out until we hit | |
3344 1. the context, | |
3345 2. a non-lambda function, or | |
3346 3. a non-default capturing lambda function. */ | |
3347 while (context != containing_function | |
3348 /* containing_function can be null with invalid generic lambdas. */ | |
3349 && containing_function | |
3350 && LAMBDA_FUNCTION_P (containing_function)) | |
3351 { | |
3352 tree closure = DECL_CONTEXT (containing_function); | |
3353 lambda_expr = CLASSTYPE_LAMBDA_EXPR (closure); | |
3354 | |
3355 if (TYPE_CLASS_SCOPE_P (closure)) | |
3356 /* A lambda in an NSDMI (c++/64496). */ | |
3357 break; | |
3358 | |
3359 if (LAMBDA_EXPR_DEFAULT_CAPTURE_MODE (lambda_expr) | |
3360 == CPLD_NONE) | |
3361 break; | |
3362 | |
3363 lambda_stack = tree_cons (NULL_TREE, | |
3364 lambda_expr, | |
3365 lambda_stack); | |
3366 | |
3367 containing_function | |
3368 = decl_function_context (containing_function); | |
3369 } | |
3370 | |
3371 /* In a lambda within a template, wait until instantiation | |
3372 time to implicitly capture. */ | |
3373 if (context == containing_function | |
3374 && DECL_TEMPLATE_INFO (containing_function) | |
3375 && uses_template_parms (DECL_TI_ARGS (containing_function))) | |
3376 return decl; | |
3377 | |
3378 if (lambda_expr && VAR_P (decl) | |
3379 && DECL_ANON_UNION_VAR_P (decl)) | |
3380 { | |
3381 if (complain & tf_error) | |
3382 error ("cannot capture member %qD of anonymous union", decl); | |
3383 return error_mark_node; | |
3384 } | |
3385 if (context == containing_function) | |
3386 { | |
3387 decl = add_default_capture (lambda_stack, | |
3388 /*id=*/DECL_NAME (decl), | |
3389 initializer); | |
3390 } | |
3391 else if (lambda_expr) | |
3392 { | |
3393 if (complain & tf_error) | |
3394 { | |
3395 error ("%qD is not captured", decl); | |
3396 tree closure = LAMBDA_EXPR_CLOSURE (lambda_expr); | |
3397 if (LAMBDA_EXPR_DEFAULT_CAPTURE_MODE (lambda_expr) | |
3398 == CPLD_NONE) | |
3399 inform (location_of (closure), | |
3400 "the lambda has no capture-default"); | |
3401 else if (TYPE_CLASS_SCOPE_P (closure)) | |
3402 inform (0, "lambda in local class %q+T cannot " | |
3403 "capture variables from the enclosing context", | |
3404 TYPE_CONTEXT (closure)); | |
3405 inform (DECL_SOURCE_LOCATION (decl), "%q#D declared here", decl); | |
3406 } | |
3407 return error_mark_node; | |
3408 } | |
3409 else | |
3410 { | |
3411 if (complain & tf_error) | |
3412 { | |
3413 error (VAR_P (decl) | |
3414 ? G_("use of local variable with automatic storage from " | |
3415 "containing function") | |
3416 : G_("use of parameter from containing function")); | |
3417 inform (DECL_SOURCE_LOCATION (decl), "%q#D declared here", decl); | |
3418 } | |
3419 return error_mark_node; | |
3420 } | |
3421 return decl; | |
3422 } | |
3423 | |
3424 /* ID_EXPRESSION is a representation of parsed, but unprocessed, | |
3425 id-expression. (See cp_parser_id_expression for details.) SCOPE, | |
3426 if non-NULL, is the type or namespace used to explicitly qualify | |
3427 ID_EXPRESSION. DECL is the entity to which that name has been | |
3428 resolved. | |
3429 | |
3430 *CONSTANT_EXPRESSION_P is true if we are presently parsing a | |
3431 constant-expression. In that case, *NON_CONSTANT_EXPRESSION_P will | |
3432 be set to true if this expression isn't permitted in a | |
3433 constant-expression, but it is otherwise not set by this function. | |
3434 *ALLOW_NON_CONSTANT_EXPRESSION_P is true if we are parsing a | |
3435 constant-expression, but a non-constant expression is also | |
3436 permissible. | |
3437 | |
3438 DONE is true if this expression is a complete postfix-expression; | |
3439 it is false if this expression is followed by '->', '[', '(', etc. | |
3440 ADDRESS_P is true iff this expression is the operand of '&'. | |
3441 TEMPLATE_P is true iff the qualified-id was of the form | |
3442 "A::template B". TEMPLATE_ARG_P is true iff this qualified name | |
3443 appears as a template argument. | |
3444 | |
3445 If an error occurs, and it is the kind of error that might cause | |
3446 the parser to abort a tentative parse, *ERROR_MSG is filled in. It | |
3447 is the caller's responsibility to issue the message. *ERROR_MSG | |
3448 will be a string with static storage duration, so the caller need | |
3449 not "free" it. | |
3450 | |
3451 Return an expression for the entity, after issuing appropriate | |
3452 diagnostics. This function is also responsible for transforming a | |
3453 reference to a non-static member into a COMPONENT_REF that makes | |
3454 the use of "this" explicit. | |
3455 | |
3456 Upon return, *IDK will be filled in appropriately. */ | |
3457 cp_expr | |
3458 finish_id_expression (tree id_expression, | |
3459 tree decl, | |
3460 tree scope, | |
3461 cp_id_kind *idk, | |
3462 bool integral_constant_expression_p, | |
3463 bool allow_non_integral_constant_expression_p, | |
3464 bool *non_integral_constant_expression_p, | |
3465 bool template_p, | |
3466 bool done, | |
3467 bool address_p, | |
3468 bool template_arg_p, | |
3469 const char **error_msg, | |
3470 location_t location) | |
3471 { | |
3472 decl = strip_using_decl (decl); | |
3473 | |
3474 /* Initialize the output parameters. */ | |
3475 *idk = CP_ID_KIND_NONE; | |
3476 *error_msg = NULL; | |
3477 | |
3478 if (id_expression == error_mark_node) | |
3479 return error_mark_node; | |
3480 /* If we have a template-id, then no further lookup is | |
3481 required. If the template-id was for a template-class, we | |
3482 will sometimes have a TYPE_DECL at this point. */ | |
3483 else if (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
3484 || TREE_CODE (decl) == TYPE_DECL) | |
3485 ; | |
3486 /* Look up the name. */ | |
3487 else | |
3488 { | |
3489 if (decl == error_mark_node) | |
3490 { | |
3491 /* Name lookup failed. */ | |
3492 if (scope | |
3493 && (!TYPE_P (scope) | |
3494 || (!dependent_type_p (scope) | |
3495 && !(identifier_p (id_expression) | |
3496 && IDENTIFIER_CONV_OP_P (id_expression) | |
3497 && dependent_type_p (TREE_TYPE (id_expression)))))) | |
3498 { | |
3499 /* If the qualifying type is non-dependent (and the name | |
3500 does not name a conversion operator to a dependent | |
3501 type), issue an error. */ | |
3502 qualified_name_lookup_error (scope, id_expression, decl, location); | |
3503 return error_mark_node; | |
3504 } | |
3505 else if (!scope) | |
3506 { | |
3507 /* It may be resolved via Koenig lookup. */ | |
3508 *idk = CP_ID_KIND_UNQUALIFIED; | |
3509 return id_expression; | |
3510 } | |
3511 else | |
3512 decl = id_expression; | |
3513 } | |
3514 /* If DECL is a variable that would be out of scope under | |
3515 ANSI/ISO rules, but in scope in the ARM, name lookup | |
3516 will succeed. Issue a diagnostic here. */ | |
3517 else | |
3518 decl = check_for_out_of_scope_variable (decl); | |
3519 | |
3520 /* Remember that the name was used in the definition of | |
3521 the current class so that we can check later to see if | |
3522 the meaning would have been different after the class | |
3523 was entirely defined. */ | |
3524 if (!scope && decl != error_mark_node && identifier_p (id_expression)) | |
3525 maybe_note_name_used_in_class (id_expression, decl); | |
3526 | |
3527 /* A use in unevaluated operand might not be instantiated appropriately | |
3528 if tsubst_copy builds a dummy parm, or if we never instantiate a | |
3529 generic lambda, so mark it now. */ | |
3530 if (processing_template_decl && cp_unevaluated_operand) | |
3531 mark_type_use (decl); | |
3532 | |
3533 /* Disallow uses of local variables from containing functions, except | |
3534 within lambda-expressions. */ | |
3535 if (outer_automatic_var_p (decl)) | |
3536 { | |
3537 decl = process_outer_var_ref (decl, tf_warning_or_error); | |
3538 if (decl == error_mark_node) | |
3539 return error_mark_node; | |
3540 } | |
3541 | |
3542 /* Also disallow uses of function parameters outside the function | |
3543 body, except inside an unevaluated context (i.e. decltype). */ | |
3544 if (TREE_CODE (decl) == PARM_DECL | |
3545 && DECL_CONTEXT (decl) == NULL_TREE | |
3546 && !cp_unevaluated_operand) | |
3547 { | |
3548 *error_msg = G_("use of parameter outside function body"); | |
3549 return error_mark_node; | |
3550 } | |
3551 } | |
3552 | |
3553 /* If we didn't find anything, or what we found was a type, | |
3554 then this wasn't really an id-expression. */ | |
3555 if (TREE_CODE (decl) == TEMPLATE_DECL | |
3556 && !DECL_FUNCTION_TEMPLATE_P (decl)) | |
3557 { | |
3558 *error_msg = G_("missing template arguments"); | |
3559 return error_mark_node; | |
3560 } | |
3561 else if (TREE_CODE (decl) == TYPE_DECL | |
3562 || TREE_CODE (decl) == NAMESPACE_DECL) | |
3563 { | |
3564 *error_msg = G_("expected primary-expression"); | |
3565 return error_mark_node; | |
3566 } | |
3567 | |
3568 /* If the name resolved to a template parameter, there is no | |
3569 need to look it up again later. */ | |
3570 if ((TREE_CODE (decl) == CONST_DECL && DECL_TEMPLATE_PARM_P (decl)) | |
3571 || TREE_CODE (decl) == TEMPLATE_PARM_INDEX) | |
3572 { | |
3573 tree r; | |
3574 | |
3575 *idk = CP_ID_KIND_NONE; | |
3576 if (TREE_CODE (decl) == TEMPLATE_PARM_INDEX) | |
3577 decl = TEMPLATE_PARM_DECL (decl); | |
3578 r = convert_from_reference (DECL_INITIAL (decl)); | |
3579 | |
3580 if (integral_constant_expression_p | |
3581 && !dependent_type_p (TREE_TYPE (decl)) | |
3582 && !(INTEGRAL_OR_ENUMERATION_TYPE_P (TREE_TYPE (r)))) | |
3583 { | |
3584 if (!allow_non_integral_constant_expression_p) | |
3585 error ("template parameter %qD of type %qT is not allowed in " | |
3586 "an integral constant expression because it is not of " | |
3587 "integral or enumeration type", decl, TREE_TYPE (decl)); | |
3588 *non_integral_constant_expression_p = true; | |
3589 } | |
3590 return r; | |
3591 } | |
3592 else | |
3593 { | |
3594 bool dependent_p = type_dependent_expression_p (decl); | |
3595 | |
3596 /* If the declaration was explicitly qualified indicate | |
3597 that. The semantics of `A::f(3)' are different than | |
3598 `f(3)' if `f' is virtual. */ | |
3599 *idk = (scope | |
3600 ? CP_ID_KIND_QUALIFIED | |
3601 : (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
3602 ? CP_ID_KIND_TEMPLATE_ID | |
3603 : (dependent_p | |
3604 ? CP_ID_KIND_UNQUALIFIED_DEPENDENT | |
3605 : CP_ID_KIND_UNQUALIFIED))); | |
3606 | |
3607 if (dependent_p | |
3608 && DECL_P (decl) | |
3609 && any_dependent_type_attributes_p (DECL_ATTRIBUTES (decl))) | |
3610 /* Dependent type attributes on the decl mean that the TREE_TYPE is | |
3611 wrong, so just return the identifier. */ | |
3612 return id_expression; | |
3613 | |
3614 if (TREE_CODE (decl) == NAMESPACE_DECL) | |
3615 { | |
3616 error ("use of namespace %qD as expression", decl); | |
3617 return error_mark_node; | |
3618 } | |
3619 else if (DECL_CLASS_TEMPLATE_P (decl)) | |
3620 { | |
3621 error ("use of class template %qT as expression", decl); | |
3622 return error_mark_node; | |
3623 } | |
3624 else if (TREE_CODE (decl) == TREE_LIST) | |
3625 { | |
3626 /* Ambiguous reference to base members. */ | |
3627 error ("request for member %qD is ambiguous in " | |
3628 "multiple inheritance lattice", id_expression); | |
3629 print_candidates (decl); | |
3630 return error_mark_node; | |
3631 } | |
3632 | |
3633 /* Mark variable-like entities as used. Functions are similarly | |
3634 marked either below or after overload resolution. */ | |
3635 if ((VAR_P (decl) | |
3636 || TREE_CODE (decl) == PARM_DECL | |
3637 || TREE_CODE (decl) == CONST_DECL | |
3638 || TREE_CODE (decl) == RESULT_DECL) | |
3639 && !mark_used (decl)) | |
3640 return error_mark_node; | |
3641 | |
3642 /* Only certain kinds of names are allowed in constant | |
3643 expression. Template parameters have already | |
3644 been handled above. */ | |
3645 if (! error_operand_p (decl) | |
3646 && !dependent_p | |
3647 && integral_constant_expression_p | |
3648 && ! decl_constant_var_p (decl) | |
3649 && TREE_CODE (decl) != CONST_DECL | |
3650 && ! builtin_valid_in_constant_expr_p (decl)) | |
3651 { | |
3652 if (!allow_non_integral_constant_expression_p) | |
3653 { | |
3654 error ("%qD cannot appear in a constant-expression", decl); | |
3655 return error_mark_node; | |
3656 } | |
3657 *non_integral_constant_expression_p = true; | |
3658 } | |
3659 | |
3660 tree wrap; | |
3661 if (VAR_P (decl) | |
3662 && !cp_unevaluated_operand | |
3663 && !processing_template_decl | |
3664 && (TREE_STATIC (decl) || DECL_EXTERNAL (decl)) | |
3665 && CP_DECL_THREAD_LOCAL_P (decl) | |
3666 && (wrap = get_tls_wrapper_fn (decl))) | |
3667 { | |
3668 /* Replace an evaluated use of the thread_local variable with | |
3669 a call to its wrapper. */ | |
3670 decl = build_cxx_call (wrap, 0, NULL, tf_warning_or_error); | |
3671 } | |
3672 else if (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
3673 && !dependent_p | |
3674 && variable_template_p (TREE_OPERAND (decl, 0))) | |
3675 { | |
3676 decl = finish_template_variable (decl); | |
3677 mark_used (decl); | |
3678 decl = convert_from_reference (decl); | |
3679 } | |
3680 else if (scope) | |
3681 { | |
3682 if (TREE_CODE (decl) == SCOPE_REF) | |
3683 { | |
3684 gcc_assert (same_type_p (scope, TREE_OPERAND (decl, 0))); | |
3685 decl = TREE_OPERAND (decl, 1); | |
3686 } | |
3687 | |
3688 decl = (adjust_result_of_qualified_name_lookup | |
3689 (decl, scope, current_nonlambda_class_type())); | |
3690 | |
3691 if (TREE_CODE (decl) == FUNCTION_DECL) | |
3692 mark_used (decl); | |
3693 | |
3694 if (TYPE_P (scope)) | |
3695 decl = finish_qualified_id_expr (scope, | |
3696 decl, | |
3697 done, | |
3698 address_p, | |
3699 template_p, | |
3700 template_arg_p, | |
3701 tf_warning_or_error); | |
3702 else | |
3703 decl = convert_from_reference (decl); | |
3704 } | |
3705 else if (TREE_CODE (decl) == FIELD_DECL) | |
3706 { | |
3707 /* Since SCOPE is NULL here, this is an unqualified name. | |
3708 Access checking has been performed during name lookup | |
3709 already. Turn off checking to avoid duplicate errors. */ | |
3710 push_deferring_access_checks (dk_no_check); | |
3711 decl = finish_non_static_data_member (decl, NULL_TREE, | |
3712 /*qualifying_scope=*/NULL_TREE); | |
3713 pop_deferring_access_checks (); | |
3714 } | |
3715 else if (is_overloaded_fn (decl)) | |
3716 { | |
3717 tree first_fn = get_first_fn (decl); | |
3718 | |
3719 if (TREE_CODE (first_fn) == TEMPLATE_DECL) | |
3720 first_fn = DECL_TEMPLATE_RESULT (first_fn); | |
3721 | |
3722 /* [basic.def.odr]: "A function whose name appears as a | |
3723 potentially-evaluated expression is odr-used if it is the unique | |
3724 lookup result". | |
3725 | |
3726 But only mark it if it's a complete postfix-expression; in a call, | |
3727 ADL might select a different function, and we'll call mark_used in | |
3728 build_over_call. */ | |
3729 if (done | |
3730 && !really_overloaded_fn (decl) | |
3731 && !mark_used (first_fn)) | |
3732 return error_mark_node; | |
3733 | |
3734 if (!template_arg_p | |
3735 && TREE_CODE (first_fn) == FUNCTION_DECL | |
3736 && DECL_FUNCTION_MEMBER_P (first_fn) | |
3737 && !shared_member_p (decl)) | |
3738 { | |
3739 /* A set of member functions. */ | |
3740 decl = maybe_dummy_object (DECL_CONTEXT (first_fn), 0); | |
3741 return finish_class_member_access_expr (decl, id_expression, | |
3742 /*template_p=*/false, | |
3743 tf_warning_or_error); | |
3744 } | |
3745 | |
3746 decl = baselink_for_fns (decl); | |
3747 } | |
3748 else | |
3749 { | |
3750 if (DECL_P (decl) && DECL_NONLOCAL (decl) | |
3751 && DECL_CLASS_SCOPE_P (decl)) | |
3752 { | |
3753 tree context = context_for_name_lookup (decl); | |
3754 if (context != current_class_type) | |
3755 { | |
3756 tree path = currently_open_derived_class (context); | |
3757 perform_or_defer_access_check (TYPE_BINFO (path), | |
3758 decl, decl, | |
3759 tf_warning_or_error); | |
3760 } | |
3761 } | |
3762 | |
3763 decl = convert_from_reference (decl); | |
3764 } | |
3765 } | |
3766 | |
3767 return cp_expr (decl, location); | |
3768 } | |
3769 | |
3770 /* Implement the __typeof keyword: Return the type of EXPR, suitable for | |
3771 use as a type-specifier. */ | |
3772 | |
3773 tree | |
3774 finish_typeof (tree expr) | |
3775 { | |
3776 tree type; | |
3777 | |
3778 if (type_dependent_expression_p (expr)) | |
3779 { | |
3780 type = cxx_make_type (TYPEOF_TYPE); | |
3781 TYPEOF_TYPE_EXPR (type) = expr; | |
3782 SET_TYPE_STRUCTURAL_EQUALITY (type); | |
3783 | |
3784 return type; | |
3785 } | |
3786 | |
3787 expr = mark_type_use (expr); | |
3788 | |
3789 type = unlowered_expr_type (expr); | |
3790 | |
3791 if (!type || type == unknown_type_node) | |
3792 { | |
3793 error ("type of %qE is unknown", expr); | |
3794 return error_mark_node; | |
3795 } | |
3796 | |
3797 return type; | |
3798 } | |
3799 | |
3800 /* Implement the __underlying_type keyword: Return the underlying | |
3801 type of TYPE, suitable for use as a type-specifier. */ | |
3802 | |
3803 tree | |
3804 finish_underlying_type (tree type) | |
3805 { | |
3806 tree underlying_type; | |
3807 | |
3808 if (processing_template_decl) | |
3809 { | |
3810 underlying_type = cxx_make_type (UNDERLYING_TYPE); | |
3811 UNDERLYING_TYPE_TYPE (underlying_type) = type; | |
3812 SET_TYPE_STRUCTURAL_EQUALITY (underlying_type); | |
3813 | |
3814 return underlying_type; | |
3815 } | |
3816 | |
3817 if (!complete_type_or_else (type, NULL_TREE)) | |
3818 return error_mark_node; | |
3819 | |
3820 if (TREE_CODE (type) != ENUMERAL_TYPE) | |
3821 { | |
3822 error ("%qT is not an enumeration type", type); | |
3823 return error_mark_node; | |
3824 } | |
3825 | |
3826 underlying_type = ENUM_UNDERLYING_TYPE (type); | |
3827 | |
3828 /* Fixup necessary in this case because ENUM_UNDERLYING_TYPE | |
3829 includes TYPE_MIN_VALUE and TYPE_MAX_VALUE information. | |
3830 See finish_enum_value_list for details. */ | |
3831 if (!ENUM_FIXED_UNDERLYING_TYPE_P (type)) | |
3832 underlying_type | |
3833 = c_common_type_for_mode (TYPE_MODE (underlying_type), | |
3834 TYPE_UNSIGNED (underlying_type)); | |
3835 | |
3836 return underlying_type; | |
3837 } | |
3838 | |
3839 /* Implement the __direct_bases keyword: Return the direct base classes | |
3840 of type */ | |
3841 | |
3842 tree | |
3843 calculate_direct_bases (tree type) | |
3844 { | |
3845 vec<tree, va_gc> *vector = make_tree_vector(); | |
3846 tree bases_vec = NULL_TREE; | |
3847 vec<tree, va_gc> *base_binfos; | |
3848 tree binfo; | |
3849 unsigned i; | |
3850 | |
3851 complete_type (type); | |
3852 | |
3853 if (!NON_UNION_CLASS_TYPE_P (type)) | |
3854 return make_tree_vec (0); | |
3855 | |
3856 base_binfos = BINFO_BASE_BINFOS (TYPE_BINFO (type)); | |
3857 | |
3858 /* Virtual bases are initialized first */ | |
3859 for (i = 0; base_binfos->iterate (i, &binfo); i++) | |
3860 { | |
3861 if (BINFO_VIRTUAL_P (binfo)) | |
3862 { | |
3863 vec_safe_push (vector, binfo); | |
3864 } | |
3865 } | |
3866 | |
3867 /* Now non-virtuals */ | |
3868 for (i = 0; base_binfos->iterate (i, &binfo); i++) | |
3869 { | |
3870 if (!BINFO_VIRTUAL_P (binfo)) | |
3871 { | |
3872 vec_safe_push (vector, binfo); | |
3873 } | |
3874 } | |
3875 | |
3876 | |
3877 bases_vec = make_tree_vec (vector->length ()); | |
3878 | |
3879 for (i = 0; i < vector->length (); ++i) | |
3880 { | |
3881 TREE_VEC_ELT (bases_vec, i) = BINFO_TYPE ((*vector)[i]); | |
3882 } | |
3883 return bases_vec; | |
3884 } | |
3885 | |
3886 /* Implement the __bases keyword: Return the base classes | |
3887 of type */ | |
3888 | |
3889 /* Find morally non-virtual base classes by walking binfo hierarchy */ | |
3890 /* Virtual base classes are handled separately in finish_bases */ | |
3891 | |
3892 static tree | |
3893 dfs_calculate_bases_pre (tree binfo, void * /*data_*/) | |
3894 { | |
3895 /* Don't walk bases of virtual bases */ | |
3896 return BINFO_VIRTUAL_P (binfo) ? dfs_skip_bases : NULL_TREE; | |
3897 } | |
3898 | |
3899 static tree | |
3900 dfs_calculate_bases_post (tree binfo, void *data_) | |
3901 { | |
3902 vec<tree, va_gc> **data = ((vec<tree, va_gc> **) data_); | |
3903 if (!BINFO_VIRTUAL_P (binfo)) | |
3904 { | |
3905 vec_safe_push (*data, BINFO_TYPE (binfo)); | |
3906 } | |
3907 return NULL_TREE; | |
3908 } | |
3909 | |
3910 /* Calculates the morally non-virtual base classes of a class */ | |
3911 static vec<tree, va_gc> * | |
3912 calculate_bases_helper (tree type) | |
3913 { | |
3914 vec<tree, va_gc> *vector = make_tree_vector(); | |
3915 | |
3916 /* Now add non-virtual base classes in order of construction */ | |
3917 if (TYPE_BINFO (type)) | |
3918 dfs_walk_all (TYPE_BINFO (type), | |
3919 dfs_calculate_bases_pre, dfs_calculate_bases_post, &vector); | |
3920 return vector; | |
3921 } | |
3922 | |
3923 tree | |
3924 calculate_bases (tree type) | |
3925 { | |
3926 vec<tree, va_gc> *vector = make_tree_vector(); | |
3927 tree bases_vec = NULL_TREE; | |
3928 unsigned i; | |
3929 vec<tree, va_gc> *vbases; | |
3930 vec<tree, va_gc> *nonvbases; | |
3931 tree binfo; | |
3932 | |
3933 complete_type (type); | |
3934 | |
3935 if (!NON_UNION_CLASS_TYPE_P (type)) | |
3936 return make_tree_vec (0); | |
3937 | |
3938 /* First go through virtual base classes */ | |
3939 for (vbases = CLASSTYPE_VBASECLASSES (type), i = 0; | |
3940 vec_safe_iterate (vbases, i, &binfo); i++) | |
3941 { | |
3942 vec<tree, va_gc> *vbase_bases; | |
3943 vbase_bases = calculate_bases_helper (BINFO_TYPE (binfo)); | |
3944 vec_safe_splice (vector, vbase_bases); | |
3945 release_tree_vector (vbase_bases); | |
3946 } | |
3947 | |
3948 /* Now for the non-virtual bases */ | |
3949 nonvbases = calculate_bases_helper (type); | |
3950 vec_safe_splice (vector, nonvbases); | |
3951 release_tree_vector (nonvbases); | |
3952 | |
3953 /* Note that during error recovery vector->length can even be zero. */ | |
3954 if (vector->length () > 1) | |
3955 { | |
3956 /* Last element is entire class, so don't copy */ | |
3957 bases_vec = make_tree_vec (vector->length() - 1); | |
3958 | |
3959 for (i = 0; i < vector->length () - 1; ++i) | |
3960 TREE_VEC_ELT (bases_vec, i) = (*vector)[i]; | |
3961 } | |
3962 else | |
3963 bases_vec = make_tree_vec (0); | |
3964 | |
3965 release_tree_vector (vector); | |
3966 return bases_vec; | |
3967 } | |
3968 | |
3969 tree | |
3970 finish_bases (tree type, bool direct) | |
3971 { | |
3972 tree bases = NULL_TREE; | |
3973 | |
3974 if (!processing_template_decl) | |
3975 { | |
3976 /* Parameter packs can only be used in templates */ | |
3977 error ("Parameter pack __bases only valid in template declaration"); | |
3978 return error_mark_node; | |
3979 } | |
3980 | |
3981 bases = cxx_make_type (BASES); | |
3982 BASES_TYPE (bases) = type; | |
3983 BASES_DIRECT (bases) = direct; | |
3984 SET_TYPE_STRUCTURAL_EQUALITY (bases); | |
3985 | |
3986 return bases; | |
3987 } | |
3988 | |
3989 /* Perform C++-specific checks for __builtin_offsetof before calling | |
3990 fold_offsetof. */ | |
3991 | |
3992 tree | |
3993 finish_offsetof (tree object_ptr, tree expr, location_t loc) | |
3994 { | |
3995 /* If we're processing a template, we can't finish the semantics yet. | |
3996 Otherwise we can fold the entire expression now. */ | |
3997 if (processing_template_decl) | |
3998 { | |
3999 expr = build2 (OFFSETOF_EXPR, size_type_node, expr, object_ptr); | |
4000 SET_EXPR_LOCATION (expr, loc); | |
4001 return expr; | |
4002 } | |
4003 | |
4004 if (TREE_CODE (expr) == PSEUDO_DTOR_EXPR) | |
4005 { | |
4006 error ("cannot apply %<offsetof%> to destructor %<~%T%>", | |
4007 TREE_OPERAND (expr, 2)); | |
4008 return error_mark_node; | |
4009 } | |
4010 if (TREE_CODE (TREE_TYPE (expr)) == FUNCTION_TYPE | |
4011 || TREE_CODE (TREE_TYPE (expr)) == METHOD_TYPE | |
4012 || TREE_TYPE (expr) == unknown_type_node) | |
4013 { | |
4014 if (INDIRECT_REF_P (expr)) | |
4015 error ("second operand of %<offsetof%> is neither a single " | |
4016 "identifier nor a sequence of member accesses and " | |
4017 "array references"); | |
4018 else | |
4019 { | |
4020 if (TREE_CODE (expr) == COMPONENT_REF | |
4021 || TREE_CODE (expr) == COMPOUND_EXPR) | |
4022 expr = TREE_OPERAND (expr, 1); | |
4023 error ("cannot apply %<offsetof%> to member function %qD", expr); | |
4024 } | |
4025 return error_mark_node; | |
4026 } | |
4027 if (REFERENCE_REF_P (expr)) | |
4028 expr = TREE_OPERAND (expr, 0); | |
4029 if (!complete_type_or_else (TREE_TYPE (TREE_TYPE (object_ptr)), object_ptr)) | |
4030 return error_mark_node; | |
4031 if (warn_invalid_offsetof | |
4032 && CLASS_TYPE_P (TREE_TYPE (TREE_TYPE (object_ptr))) | |
4033 && CLASSTYPE_NON_STD_LAYOUT (TREE_TYPE (TREE_TYPE (object_ptr))) | |
4034 && cp_unevaluated_operand == 0) | |
4035 pedwarn (loc, OPT_Winvalid_offsetof, | |
4036 "offsetof within non-standard-layout type %qT is undefined", | |
4037 TREE_TYPE (TREE_TYPE (object_ptr))); | |
4038 return fold_offsetof (expr); | |
4039 } | |
4040 | |
4041 /* Replace the AGGR_INIT_EXPR at *TP with an equivalent CALL_EXPR. This | |
4042 function is broken out from the above for the benefit of the tree-ssa | |
4043 project. */ | |
4044 | |
4045 void | |
4046 simplify_aggr_init_expr (tree *tp) | |
4047 { | |
4048 tree aggr_init_expr = *tp; | |
4049 | |
4050 /* Form an appropriate CALL_EXPR. */ | |
4051 tree fn = AGGR_INIT_EXPR_FN (aggr_init_expr); | |
4052 tree slot = AGGR_INIT_EXPR_SLOT (aggr_init_expr); | |
4053 tree type = TREE_TYPE (slot); | |
4054 | |
4055 tree call_expr; | |
4056 enum style_t { ctor, arg, pcc } style; | |
4057 | |
4058 if (AGGR_INIT_VIA_CTOR_P (aggr_init_expr)) | |
4059 style = ctor; | |
4060 #ifdef PCC_STATIC_STRUCT_RETURN | |
4061 else if (1) | |
4062 style = pcc; | |
4063 #endif | |
4064 else | |
4065 { | |
4066 gcc_assert (TREE_ADDRESSABLE (type)); | |
4067 style = arg; | |
4068 } | |
4069 | |
4070 call_expr = build_call_array_loc (input_location, | |
4071 TREE_TYPE (TREE_TYPE (TREE_TYPE (fn))), | |
4072 fn, | |
4073 aggr_init_expr_nargs (aggr_init_expr), | |
4074 AGGR_INIT_EXPR_ARGP (aggr_init_expr)); | |
4075 TREE_NOTHROW (call_expr) = TREE_NOTHROW (aggr_init_expr); | |
4076 CALL_FROM_THUNK_P (call_expr) = AGGR_INIT_FROM_THUNK_P (aggr_init_expr); | |
4077 CALL_EXPR_OPERATOR_SYNTAX (call_expr) | |
4078 = CALL_EXPR_OPERATOR_SYNTAX (aggr_init_expr); | |
4079 CALL_EXPR_ORDERED_ARGS (call_expr) = CALL_EXPR_ORDERED_ARGS (aggr_init_expr); | |
4080 CALL_EXPR_REVERSE_ARGS (call_expr) = CALL_EXPR_REVERSE_ARGS (aggr_init_expr); | |
4081 /* Preserve CILK_SPAWN flag. */ | |
4082 EXPR_CILK_SPAWN (call_expr) = EXPR_CILK_SPAWN (aggr_init_expr); | |
4083 | |
4084 if (style == ctor) | |
4085 { | |
4086 /* Replace the first argument to the ctor with the address of the | |
4087 slot. */ | |
4088 cxx_mark_addressable (slot); | |
4089 CALL_EXPR_ARG (call_expr, 0) = | |
4090 build1 (ADDR_EXPR, build_pointer_type (type), slot); | |
4091 } | |
4092 else if (style == arg) | |
4093 { | |
4094 /* Just mark it addressable here, and leave the rest to | |
4095 expand_call{,_inline}. */ | |
4096 cxx_mark_addressable (slot); | |
4097 CALL_EXPR_RETURN_SLOT_OPT (call_expr) = true; | |
4098 call_expr = build2 (INIT_EXPR, TREE_TYPE (call_expr), slot, call_expr); | |
4099 } | |
4100 else if (style == pcc) | |
4101 { | |
4102 /* If we're using the non-reentrant PCC calling convention, then we | |
4103 need to copy the returned value out of the static buffer into the | |
4104 SLOT. */ | |
4105 push_deferring_access_checks (dk_no_check); | |
4106 call_expr = build_aggr_init (slot, call_expr, | |
4107 DIRECT_BIND | LOOKUP_ONLYCONVERTING, | |
4108 tf_warning_or_error); | |
4109 pop_deferring_access_checks (); | |
4110 call_expr = build2 (COMPOUND_EXPR, TREE_TYPE (slot), call_expr, slot); | |
4111 } | |
4112 | |
4113 if (AGGR_INIT_ZERO_FIRST (aggr_init_expr)) | |
4114 { | |
4115 tree init = build_zero_init (type, NULL_TREE, | |
4116 /*static_storage_p=*/false); | |
4117 init = build2 (INIT_EXPR, void_type_node, slot, init); | |
4118 call_expr = build2 (COMPOUND_EXPR, TREE_TYPE (call_expr), | |
4119 init, call_expr); | |
4120 } | |
4121 | |
4122 *tp = call_expr; | |
4123 } | |
4124 | |
4125 /* Emit all thunks to FN that should be emitted when FN is emitted. */ | |
4126 | |
4127 void | |
4128 emit_associated_thunks (tree fn) | |
4129 { | |
4130 /* When we use vcall offsets, we emit thunks with the virtual | |
4131 functions to which they thunk. The whole point of vcall offsets | |
4132 is so that you can know statically the entire set of thunks that | |
4133 will ever be needed for a given virtual function, thereby | |
4134 enabling you to output all the thunks with the function itself. */ | |
4135 if (DECL_VIRTUAL_P (fn) | |
4136 /* Do not emit thunks for extern template instantiations. */ | |
4137 && ! DECL_REALLY_EXTERN (fn)) | |
4138 { | |
4139 tree thunk; | |
4140 | |
4141 for (thunk = DECL_THUNKS (fn); thunk; thunk = DECL_CHAIN (thunk)) | |
4142 { | |
4143 if (!THUNK_ALIAS (thunk)) | |
4144 { | |
4145 use_thunk (thunk, /*emit_p=*/1); | |
4146 if (DECL_RESULT_THUNK_P (thunk)) | |
4147 { | |
4148 tree probe; | |
4149 | |
4150 for (probe = DECL_THUNKS (thunk); | |
4151 probe; probe = DECL_CHAIN (probe)) | |
4152 use_thunk (probe, /*emit_p=*/1); | |
4153 } | |
4154 } | |
4155 else | |
4156 gcc_assert (!DECL_THUNKS (thunk)); | |
4157 } | |
4158 } | |
4159 } | |
4160 | |
4161 /* Generate RTL for FN. */ | |
4162 | |
4163 bool | |
4164 expand_or_defer_fn_1 (tree fn) | |
4165 { | |
4166 /* When the parser calls us after finishing the body of a template | |
4167 function, we don't really want to expand the body. */ | |
4168 if (processing_template_decl) | |
4169 { | |
4170 /* Normally, collection only occurs in rest_of_compilation. So, | |
4171 if we don't collect here, we never collect junk generated | |
4172 during the processing of templates until we hit a | |
4173 non-template function. It's not safe to do this inside a | |
4174 nested class, though, as the parser may have local state that | |
4175 is not a GC root. */ | |
4176 if (!function_depth) | |
4177 ggc_collect (); | |
4178 return false; | |
4179 } | |
4180 | |
4181 gcc_assert (DECL_SAVED_TREE (fn)); | |
4182 | |
4183 /* We make a decision about linkage for these functions at the end | |
4184 of the compilation. Until that point, we do not want the back | |
4185 end to output them -- but we do want it to see the bodies of | |
4186 these functions so that it can inline them as appropriate. */ | |
4187 if (DECL_DECLARED_INLINE_P (fn) || DECL_IMPLICIT_INSTANTIATION (fn)) | |
4188 { | |
4189 if (DECL_INTERFACE_KNOWN (fn)) | |
4190 /* We've already made a decision as to how this function will | |
4191 be handled. */; | |
4192 else if (!at_eof) | |
4193 tentative_decl_linkage (fn); | |
4194 else | |
4195 import_export_decl (fn); | |
4196 | |
4197 /* If the user wants us to keep all inline functions, then mark | |
4198 this function as needed so that finish_file will make sure to | |
4199 output it later. Similarly, all dllexport'd functions must | |
4200 be emitted; there may be callers in other DLLs. */ | |
4201 if (DECL_DECLARED_INLINE_P (fn) | |
4202 && !DECL_REALLY_EXTERN (fn) | |
4203 && (flag_keep_inline_functions | |
4204 || (flag_keep_inline_dllexport | |
4205 && lookup_attribute ("dllexport", DECL_ATTRIBUTES (fn))))) | |
4206 { | |
4207 mark_needed (fn); | |
4208 DECL_EXTERNAL (fn) = 0; | |
4209 } | |
4210 } | |
4211 | |
4212 /* If this is a constructor or destructor body, we have to clone | |
4213 it. */ | |
4214 if (maybe_clone_body (fn)) | |
4215 { | |
4216 /* We don't want to process FN again, so pretend we've written | |
4217 it out, even though we haven't. */ | |
4218 TREE_ASM_WRITTEN (fn) = 1; | |
4219 /* If this is a constexpr function, keep DECL_SAVED_TREE. */ | |
4220 if (!DECL_DECLARED_CONSTEXPR_P (fn)) | |
4221 DECL_SAVED_TREE (fn) = NULL_TREE; | |
4222 return false; | |
4223 } | |
4224 | |
4225 /* There's no reason to do any of the work here if we're only doing | |
4226 semantic analysis; this code just generates RTL. */ | |
4227 if (flag_syntax_only) | |
4228 return false; | |
4229 | |
4230 return true; | |
4231 } | |
4232 | |
4233 void | |
4234 expand_or_defer_fn (tree fn) | |
4235 { | |
4236 if (expand_or_defer_fn_1 (fn)) | |
4237 { | |
4238 function_depth++; | |
4239 | |
4240 /* Expand or defer, at the whim of the compilation unit manager. */ | |
4241 cgraph_node::finalize_function (fn, function_depth > 1); | |
4242 emit_associated_thunks (fn); | |
4243 | |
4244 function_depth--; | |
4245 } | |
4246 } | |
4247 | |
4248 struct nrv_data | |
4249 { | |
4250 nrv_data () : visited (37) {} | |
4251 | |
4252 tree var; | |
4253 tree result; | |
4254 hash_table<nofree_ptr_hash <tree_node> > visited; | |
4255 }; | |
4256 | |
4257 /* Helper function for walk_tree, used by finalize_nrv below. */ | |
4258 | |
4259 static tree | |
4260 finalize_nrv_r (tree* tp, int* walk_subtrees, void* data) | |
4261 { | |
4262 struct nrv_data *dp = (struct nrv_data *)data; | |
4263 tree_node **slot; | |
4264 | |
4265 /* No need to walk into types. There wouldn't be any need to walk into | |
4266 non-statements, except that we have to consider STMT_EXPRs. */ | |
4267 if (TYPE_P (*tp)) | |
4268 *walk_subtrees = 0; | |
4269 /* Change all returns to just refer to the RESULT_DECL; this is a nop, | |
4270 but differs from using NULL_TREE in that it indicates that we care | |
4271 about the value of the RESULT_DECL. */ | |
4272 else if (TREE_CODE (*tp) == RETURN_EXPR) | |
4273 TREE_OPERAND (*tp, 0) = dp->result; | |
4274 /* Change all cleanups for the NRV to only run when an exception is | |
4275 thrown. */ | |
4276 else if (TREE_CODE (*tp) == CLEANUP_STMT | |
4277 && CLEANUP_DECL (*tp) == dp->var) | |
4278 CLEANUP_EH_ONLY (*tp) = 1; | |
4279 /* Replace the DECL_EXPR for the NRV with an initialization of the | |
4280 RESULT_DECL, if needed. */ | |
4281 else if (TREE_CODE (*tp) == DECL_EXPR | |
4282 && DECL_EXPR_DECL (*tp) == dp->var) | |
4283 { | |
4284 tree init; | |
4285 if (DECL_INITIAL (dp->var) | |
4286 && DECL_INITIAL (dp->var) != error_mark_node) | |
4287 init = build2 (INIT_EXPR, void_type_node, dp->result, | |
4288 DECL_INITIAL (dp->var)); | |
4289 else | |
4290 init = build_empty_stmt (EXPR_LOCATION (*tp)); | |
4291 DECL_INITIAL (dp->var) = NULL_TREE; | |
4292 SET_EXPR_LOCATION (init, EXPR_LOCATION (*tp)); | |
4293 *tp = init; | |
4294 } | |
4295 /* And replace all uses of the NRV with the RESULT_DECL. */ | |
4296 else if (*tp == dp->var) | |
4297 *tp = dp->result; | |
4298 | |
4299 /* Avoid walking into the same tree more than once. Unfortunately, we | |
4300 can't just use walk_tree_without duplicates because it would only call | |
4301 us for the first occurrence of dp->var in the function body. */ | |
4302 slot = dp->visited.find_slot (*tp, INSERT); | |
4303 if (*slot) | |
4304 *walk_subtrees = 0; | |
4305 else | |
4306 *slot = *tp; | |
4307 | |
4308 /* Keep iterating. */ | |
4309 return NULL_TREE; | |
4310 } | |
4311 | |
4312 /* Called from finish_function to implement the named return value | |
4313 optimization by overriding all the RETURN_EXPRs and pertinent | |
4314 CLEANUP_STMTs and replacing all occurrences of VAR with RESULT, the | |
4315 RESULT_DECL for the function. */ | |
4316 | |
4317 void | |
4318 finalize_nrv (tree *tp, tree var, tree result) | |
4319 { | |
4320 struct nrv_data data; | |
4321 | |
4322 /* Copy name from VAR to RESULT. */ | |
4323 DECL_NAME (result) = DECL_NAME (var); | |
4324 /* Don't forget that we take its address. */ | |
4325 TREE_ADDRESSABLE (result) = TREE_ADDRESSABLE (var); | |
4326 /* Finally set DECL_VALUE_EXPR to avoid assigning | |
4327 a stack slot at -O0 for the original var and debug info | |
4328 uses RESULT location for VAR. */ | |
4329 SET_DECL_VALUE_EXPR (var, result); | |
4330 DECL_HAS_VALUE_EXPR_P (var) = 1; | |
4331 | |
4332 data.var = var; | |
4333 data.result = result; | |
4334 cp_walk_tree (tp, finalize_nrv_r, &data, 0); | |
4335 } | |
4336 | |
4337 /* Create CP_OMP_CLAUSE_INFO for clause C. Returns true if it is invalid. */ | |
4338 | |
4339 bool | |
4340 cxx_omp_create_clause_info (tree c, tree type, bool need_default_ctor, | |
4341 bool need_copy_ctor, bool need_copy_assignment, | |
4342 bool need_dtor) | |
4343 { | |
4344 int save_errorcount = errorcount; | |
4345 tree info, t; | |
4346 | |
4347 /* Always allocate 3 elements for simplicity. These are the | |
4348 function decls for the ctor, dtor, and assignment op. | |
4349 This layout is known to the three lang hooks, | |
4350 cxx_omp_clause_default_init, cxx_omp_clause_copy_init, | |
4351 and cxx_omp_clause_assign_op. */ | |
4352 info = make_tree_vec (3); | |
4353 CP_OMP_CLAUSE_INFO (c) = info; | |
4354 | |
4355 if (need_default_ctor || need_copy_ctor) | |
4356 { | |
4357 if (need_default_ctor) | |
4358 t = get_default_ctor (type); | |
4359 else | |
4360 t = get_copy_ctor (type, tf_warning_or_error); | |
4361 | |
4362 if (t && !trivial_fn_p (t)) | |
4363 TREE_VEC_ELT (info, 0) = t; | |
4364 } | |
4365 | |
4366 if (need_dtor && TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)) | |
4367 TREE_VEC_ELT (info, 1) = get_dtor (type, tf_warning_or_error); | |
4368 | |
4369 if (need_copy_assignment) | |
4370 { | |
4371 t = get_copy_assign (type); | |
4372 | |
4373 if (t && !trivial_fn_p (t)) | |
4374 TREE_VEC_ELT (info, 2) = t; | |
4375 } | |
4376 | |
4377 return errorcount != save_errorcount; | |
4378 } | |
4379 | |
4380 /* If DECL is DECL_OMP_PRIVATIZED_MEMBER, return corresponding | |
4381 FIELD_DECL, otherwise return DECL itself. */ | |
4382 | |
4383 static tree | |
4384 omp_clause_decl_field (tree decl) | |
4385 { | |
4386 if (VAR_P (decl) | |
4387 && DECL_HAS_VALUE_EXPR_P (decl) | |
4388 && DECL_ARTIFICIAL (decl) | |
4389 && DECL_LANG_SPECIFIC (decl) | |
4390 && DECL_OMP_PRIVATIZED_MEMBER (decl)) | |
4391 { | |
4392 tree f = DECL_VALUE_EXPR (decl); | |
4393 if (TREE_CODE (f) == INDIRECT_REF) | |
4394 f = TREE_OPERAND (f, 0); | |
4395 if (TREE_CODE (f) == COMPONENT_REF) | |
4396 { | |
4397 f = TREE_OPERAND (f, 1); | |
4398 gcc_assert (TREE_CODE (f) == FIELD_DECL); | |
4399 return f; | |
4400 } | |
4401 } | |
4402 return NULL_TREE; | |
4403 } | |
4404 | |
4405 /* Adjust DECL if needed for printing using %qE. */ | |
4406 | |
4407 static tree | |
4408 omp_clause_printable_decl (tree decl) | |
4409 { | |
4410 tree t = omp_clause_decl_field (decl); | |
4411 if (t) | |
4412 return t; | |
4413 return decl; | |
4414 } | |
4415 | |
4416 /* For a FIELD_DECL F and corresponding DECL_OMP_PRIVATIZED_MEMBER | |
4417 VAR_DECL T that doesn't need a DECL_EXPR added, record it for | |
4418 privatization. */ | |
4419 | |
4420 static void | |
4421 omp_note_field_privatization (tree f, tree t) | |
4422 { | |
4423 if (!omp_private_member_map) | |
4424 omp_private_member_map = new hash_map<tree, tree>; | |
4425 tree &v = omp_private_member_map->get_or_insert (f); | |
4426 if (v == NULL_TREE) | |
4427 { | |
4428 v = t; | |
4429 omp_private_member_vec.safe_push (f); | |
4430 /* Signal that we don't want to create DECL_EXPR for this dummy var. */ | |
4431 omp_private_member_vec.safe_push (integer_zero_node); | |
4432 } | |
4433 } | |
4434 | |
4435 /* Privatize FIELD_DECL T, return corresponding DECL_OMP_PRIVATIZED_MEMBER | |
4436 dummy VAR_DECL. */ | |
4437 | |
4438 tree | |
4439 omp_privatize_field (tree t, bool shared) | |
4440 { | |
4441 tree m = finish_non_static_data_member (t, NULL_TREE, NULL_TREE); | |
4442 if (m == error_mark_node) | |
4443 return error_mark_node; | |
4444 if (!omp_private_member_map && !shared) | |
4445 omp_private_member_map = new hash_map<tree, tree>; | |
4446 if (TREE_CODE (TREE_TYPE (t)) == REFERENCE_TYPE) | |
4447 { | |
4448 gcc_assert (TREE_CODE (m) == INDIRECT_REF); | |
4449 m = TREE_OPERAND (m, 0); | |
4450 } | |
4451 tree vb = NULL_TREE; | |
4452 tree &v = shared ? vb : omp_private_member_map->get_or_insert (t); | |
4453 if (v == NULL_TREE) | |
4454 { | |
4455 v = create_temporary_var (TREE_TYPE (m)); | |
4456 retrofit_lang_decl (v); | |
4457 DECL_OMP_PRIVATIZED_MEMBER (v) = 1; | |
4458 SET_DECL_VALUE_EXPR (v, m); | |
4459 DECL_HAS_VALUE_EXPR_P (v) = 1; | |
4460 if (!shared) | |
4461 omp_private_member_vec.safe_push (t); | |
4462 } | |
4463 return v; | |
4464 } | |
4465 | |
4466 /* Helper function for handle_omp_array_sections. Called recursively | |
4467 to handle multiple array-section-subscripts. C is the clause, | |
4468 T current expression (initially OMP_CLAUSE_DECL), which is either | |
4469 a TREE_LIST for array-section-subscript (TREE_PURPOSE is low-bound | |
4470 expression if specified, TREE_VALUE length expression if specified, | |
4471 TREE_CHAIN is what it has been specified after, or some decl. | |
4472 TYPES vector is populated with array section types, MAYBE_ZERO_LEN | |
4473 set to true if any of the array-section-subscript could have length | |
4474 of zero (explicit or implicit), FIRST_NON_ONE is the index of the | |
4475 first array-section-subscript which is known not to have length | |
4476 of one. Given say: | |
4477 map(a[:b][2:1][:c][:2][:d][e:f][2:5]) | |
4478 FIRST_NON_ONE will be 3, array-section-subscript [:b], [2:1] and [:c] | |
4479 all are or may have length of 1, array-section-subscript [:2] is the | |
4480 first one known not to have length 1. For array-section-subscript | |
4481 <= FIRST_NON_ONE we diagnose non-contiguous arrays if low bound isn't | |
4482 0 or length isn't the array domain max + 1, for > FIRST_NON_ONE we | |
4483 can if MAYBE_ZERO_LEN is false. MAYBE_ZERO_LEN will be true in the above | |
4484 case though, as some lengths could be zero. */ | |
4485 | |
4486 static tree | |
4487 handle_omp_array_sections_1 (tree c, tree t, vec<tree> &types, | |
4488 bool &maybe_zero_len, unsigned int &first_non_one, | |
4489 enum c_omp_region_type ort) | |
4490 { | |
4491 tree ret, low_bound, length, type; | |
4492 if (TREE_CODE (t) != TREE_LIST) | |
4493 { | |
4494 if (error_operand_p (t)) | |
4495 return error_mark_node; | |
4496 if (REFERENCE_REF_P (t) | |
4497 && TREE_CODE (TREE_OPERAND (t, 0)) == COMPONENT_REF) | |
4498 t = TREE_OPERAND (t, 0); | |
4499 ret = t; | |
4500 if (TREE_CODE (t) == COMPONENT_REF | |
4501 && ort == C_ORT_OMP | |
4502 && (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP | |
4503 || OMP_CLAUSE_CODE (c) == OMP_CLAUSE_TO | |
4504 || OMP_CLAUSE_CODE (c) == OMP_CLAUSE_FROM) | |
4505 && !type_dependent_expression_p (t)) | |
4506 { | |
4507 if (TREE_CODE (TREE_OPERAND (t, 1)) == FIELD_DECL | |
4508 && DECL_BIT_FIELD (TREE_OPERAND (t, 1))) | |
4509 { | |
4510 error_at (OMP_CLAUSE_LOCATION (c), | |
4511 "bit-field %qE in %qs clause", | |
4512 t, omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
4513 return error_mark_node; | |
4514 } | |
4515 while (TREE_CODE (t) == COMPONENT_REF) | |
4516 { | |
4517 if (TREE_TYPE (TREE_OPERAND (t, 0)) | |
4518 && TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) == UNION_TYPE) | |
4519 { | |
4520 error_at (OMP_CLAUSE_LOCATION (c), | |
4521 "%qE is a member of a union", t); | |
4522 return error_mark_node; | |
4523 } | |
4524 t = TREE_OPERAND (t, 0); | |
4525 } | |
4526 if (REFERENCE_REF_P (t)) | |
4527 t = TREE_OPERAND (t, 0); | |
4528 } | |
4529 if (!VAR_P (t) && TREE_CODE (t) != PARM_DECL) | |
4530 { | |
4531 if (processing_template_decl && TREE_CODE (t) != OVERLOAD) | |
4532 return NULL_TREE; | |
4533 if (DECL_P (t)) | |
4534 error_at (OMP_CLAUSE_LOCATION (c), | |
4535 "%qD is not a variable in %qs clause", t, | |
4536 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
4537 else | |
4538 error_at (OMP_CLAUSE_LOCATION (c), | |
4539 "%qE is not a variable in %qs clause", t, | |
4540 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
4541 return error_mark_node; | |
4542 } | |
4543 else if (TREE_CODE (t) == PARM_DECL | |
4544 && DECL_ARTIFICIAL (t) | |
4545 && DECL_NAME (t) == this_identifier) | |
4546 { | |
4547 error_at (OMP_CLAUSE_LOCATION (c), | |
4548 "%<this%> allowed in OpenMP only in %<declare simd%>" | |
4549 " clauses"); | |
4550 return error_mark_node; | |
4551 } | |
4552 else if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_DEPEND | |
4553 && VAR_P (t) && CP_DECL_THREAD_LOCAL_P (t)) | |
4554 { | |
4555 error_at (OMP_CLAUSE_LOCATION (c), | |
4556 "%qD is threadprivate variable in %qs clause", t, | |
4557 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
4558 return error_mark_node; | |
4559 } | |
4560 if (type_dependent_expression_p (ret)) | |
4561 return NULL_TREE; | |
4562 ret = convert_from_reference (ret); | |
4563 return ret; | |
4564 } | |
4565 | |
4566 if (ort == C_ORT_OMP | |
4567 && OMP_CLAUSE_CODE (c) == OMP_CLAUSE_REDUCTION | |
4568 && TREE_CODE (TREE_CHAIN (t)) == FIELD_DECL) | |
4569 TREE_CHAIN (t) = omp_privatize_field (TREE_CHAIN (t), false); | |
4570 ret = handle_omp_array_sections_1 (c, TREE_CHAIN (t), types, | |
4571 maybe_zero_len, first_non_one, ort); | |
4572 if (ret == error_mark_node || ret == NULL_TREE) | |
4573 return ret; | |
4574 | |
4575 type = TREE_TYPE (ret); | |
4576 low_bound = TREE_PURPOSE (t); | |
4577 length = TREE_VALUE (t); | |
4578 if ((low_bound && type_dependent_expression_p (low_bound)) | |
4579 || (length && type_dependent_expression_p (length))) | |
4580 return NULL_TREE; | |
4581 | |
4582 if (low_bound == error_mark_node || length == error_mark_node) | |
4583 return error_mark_node; | |
4584 | |
4585 if (low_bound && !INTEGRAL_TYPE_P (TREE_TYPE (low_bound))) | |
4586 { | |
4587 error_at (OMP_CLAUSE_LOCATION (c), | |
4588 "low bound %qE of array section does not have integral type", | |
4589 low_bound); | |
4590 return error_mark_node; | |
4591 } | |
4592 if (length && !INTEGRAL_TYPE_P (TREE_TYPE (length))) | |
4593 { | |
4594 error_at (OMP_CLAUSE_LOCATION (c), | |
4595 "length %qE of array section does not have integral type", | |
4596 length); | |
4597 return error_mark_node; | |
4598 } | |
4599 if (low_bound) | |
4600 low_bound = mark_rvalue_use (low_bound); | |
4601 if (length) | |
4602 length = mark_rvalue_use (length); | |
4603 /* We need to reduce to real constant-values for checks below. */ | |
4604 if (length) | |
4605 length = fold_simple (length); | |
4606 if (low_bound) | |
4607 low_bound = fold_simple (low_bound); | |
4608 if (low_bound | |
4609 && TREE_CODE (low_bound) == INTEGER_CST | |
4610 && TYPE_PRECISION (TREE_TYPE (low_bound)) | |
4611 > TYPE_PRECISION (sizetype)) | |
4612 low_bound = fold_convert (sizetype, low_bound); | |
4613 if (length | |
4614 && TREE_CODE (length) == INTEGER_CST | |
4615 && TYPE_PRECISION (TREE_TYPE (length)) | |
4616 > TYPE_PRECISION (sizetype)) | |
4617 length = fold_convert (sizetype, length); | |
4618 if (low_bound == NULL_TREE) | |
4619 low_bound = integer_zero_node; | |
4620 | |
4621 if (length != NULL_TREE) | |
4622 { | |
4623 if (!integer_nonzerop (length)) | |
4624 { | |
4625 if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_DEPEND | |
4626 || OMP_CLAUSE_CODE (c) == OMP_CLAUSE_REDUCTION) | |
4627 { | |
4628 if (integer_zerop (length)) | |
4629 { | |
4630 error_at (OMP_CLAUSE_LOCATION (c), | |
4631 "zero length array section in %qs clause", | |
4632 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
4633 return error_mark_node; | |
4634 } | |
4635 } | |
4636 else | |
4637 maybe_zero_len = true; | |
4638 } | |
4639 if (first_non_one == types.length () | |
4640 && (TREE_CODE (length) != INTEGER_CST || integer_onep (length))) | |
4641 first_non_one++; | |
4642 } | |
4643 if (TREE_CODE (type) == ARRAY_TYPE) | |
4644 { | |
4645 if (length == NULL_TREE | |
4646 && (TYPE_DOMAIN (type) == NULL_TREE | |
4647 || TYPE_MAX_VALUE (TYPE_DOMAIN (type)) == NULL_TREE)) | |
4648 { | |
4649 error_at (OMP_CLAUSE_LOCATION (c), | |
4650 "for unknown bound array type length expression must " | |
4651 "be specified"); | |
4652 return error_mark_node; | |
4653 } | |
4654 if (TREE_CODE (low_bound) == INTEGER_CST | |
4655 && tree_int_cst_sgn (low_bound) == -1) | |
4656 { | |
4657 error_at (OMP_CLAUSE_LOCATION (c), | |
4658 "negative low bound in array section in %qs clause", | |
4659 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
4660 return error_mark_node; | |
4661 } | |
4662 if (length != NULL_TREE | |
4663 && TREE_CODE (length) == INTEGER_CST | |
4664 && tree_int_cst_sgn (length) == -1) | |
4665 { | |
4666 error_at (OMP_CLAUSE_LOCATION (c), | |
4667 "negative length in array section in %qs clause", | |
4668 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
4669 return error_mark_node; | |
4670 } | |
4671 if (TYPE_DOMAIN (type) | |
4672 && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) | |
4673 && TREE_CODE (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) | |
4674 == INTEGER_CST) | |
4675 { | |
4676 tree size | |
4677 = fold_convert (sizetype, TYPE_MAX_VALUE (TYPE_DOMAIN (type))); | |
4678 size = size_binop (PLUS_EXPR, size, size_one_node); | |
4679 if (TREE_CODE (low_bound) == INTEGER_CST) | |
4680 { | |
4681 if (tree_int_cst_lt (size, low_bound)) | |
4682 { | |
4683 error_at (OMP_CLAUSE_LOCATION (c), | |
4684 "low bound %qE above array section size " | |
4685 "in %qs clause", low_bound, | |
4686 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
4687 return error_mark_node; | |
4688 } | |
4689 if (tree_int_cst_equal (size, low_bound)) | |
4690 { | |
4691 if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_DEPEND | |
4692 || OMP_CLAUSE_CODE (c) == OMP_CLAUSE_REDUCTION) | |
4693 { | |
4694 error_at (OMP_CLAUSE_LOCATION (c), | |
4695 "zero length array section in %qs clause", | |
4696 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
4697 return error_mark_node; | |
4698 } | |
4699 maybe_zero_len = true; | |
4700 } | |
4701 else if (length == NULL_TREE | |
4702 && first_non_one == types.length () | |
4703 && tree_int_cst_equal | |
4704 (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), | |
4705 low_bound)) | |
4706 first_non_one++; | |
4707 } | |
4708 else if (length == NULL_TREE) | |
4709 { | |
4710 if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_DEPEND | |
4711 && OMP_CLAUSE_CODE (c) != OMP_CLAUSE_REDUCTION) | |
4712 maybe_zero_len = true; | |
4713 if (first_non_one == types.length ()) | |
4714 first_non_one++; | |
4715 } | |
4716 if (length && TREE_CODE (length) == INTEGER_CST) | |
4717 { | |
4718 if (tree_int_cst_lt (size, length)) | |
4719 { | |
4720 error_at (OMP_CLAUSE_LOCATION (c), | |
4721 "length %qE above array section size " | |
4722 "in %qs clause", length, | |
4723 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
4724 return error_mark_node; | |
4725 } | |
4726 if (TREE_CODE (low_bound) == INTEGER_CST) | |
4727 { | |
4728 tree lbpluslen | |
4729 = size_binop (PLUS_EXPR, | |
4730 fold_convert (sizetype, low_bound), | |
4731 fold_convert (sizetype, length)); | |
4732 if (TREE_CODE (lbpluslen) == INTEGER_CST | |
4733 && tree_int_cst_lt (size, lbpluslen)) | |
4734 { | |
4735 error_at (OMP_CLAUSE_LOCATION (c), | |
4736 "high bound %qE above array section size " | |
4737 "in %qs clause", lbpluslen, | |
4738 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
4739 return error_mark_node; | |
4740 } | |
4741 } | |
4742 } | |
4743 } | |
4744 else if (length == NULL_TREE) | |
4745 { | |
4746 if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_DEPEND | |
4747 && OMP_CLAUSE_CODE (c) != OMP_CLAUSE_REDUCTION) | |
4748 maybe_zero_len = true; | |
4749 if (first_non_one == types.length ()) | |
4750 first_non_one++; | |
4751 } | |
4752 | |
4753 /* For [lb:] we will need to evaluate lb more than once. */ | |
4754 if (length == NULL_TREE && OMP_CLAUSE_CODE (c) != OMP_CLAUSE_DEPEND) | |
4755 { | |
4756 tree lb = cp_save_expr (low_bound); | |
4757 if (lb != low_bound) | |
4758 { | |
4759 TREE_PURPOSE (t) = lb; | |
4760 low_bound = lb; | |
4761 } | |
4762 } | |
4763 } | |
4764 else if (TREE_CODE (type) == POINTER_TYPE) | |
4765 { | |
4766 if (length == NULL_TREE) | |
4767 { | |
4768 error_at (OMP_CLAUSE_LOCATION (c), | |
4769 "for pointer type length expression must be specified"); | |
4770 return error_mark_node; | |
4771 } | |
4772 if (length != NULL_TREE | |
4773 && TREE_CODE (length) == INTEGER_CST | |
4774 && tree_int_cst_sgn (length) == -1) | |
4775 { | |
4776 error_at (OMP_CLAUSE_LOCATION (c), | |
4777 "negative length in array section in %qs clause", | |
4778 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
4779 return error_mark_node; | |
4780 } | |
4781 /* If there is a pointer type anywhere but in the very first | |
4782 array-section-subscript, the array section can't be contiguous. */ | |
4783 if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_DEPEND | |
4784 && TREE_CODE (TREE_CHAIN (t)) == TREE_LIST) | |
4785 { | |
4786 error_at (OMP_CLAUSE_LOCATION (c), | |
4787 "array section is not contiguous in %qs clause", | |
4788 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
4789 return error_mark_node; | |
4790 } | |
4791 } | |
4792 else | |
4793 { | |
4794 error_at (OMP_CLAUSE_LOCATION (c), | |
4795 "%qE does not have pointer or array type", ret); | |
4796 return error_mark_node; | |
4797 } | |
4798 if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_DEPEND) | |
4799 types.safe_push (TREE_TYPE (ret)); | |
4800 /* We will need to evaluate lb more than once. */ | |
4801 tree lb = cp_save_expr (low_bound); | |
4802 if (lb != low_bound) | |
4803 { | |
4804 TREE_PURPOSE (t) = lb; | |
4805 low_bound = lb; | |
4806 } | |
4807 ret = grok_array_decl (OMP_CLAUSE_LOCATION (c), ret, low_bound, false); | |
4808 return ret; | |
4809 } | |
4810 | |
4811 /* Handle array sections for clause C. */ | |
4812 | |
4813 static bool | |
4814 handle_omp_array_sections (tree c, enum c_omp_region_type ort) | |
4815 { | |
4816 bool maybe_zero_len = false; | |
4817 unsigned int first_non_one = 0; | |
4818 auto_vec<tree, 10> types; | |
4819 tree first = handle_omp_array_sections_1 (c, OMP_CLAUSE_DECL (c), types, | |
4820 maybe_zero_len, first_non_one, | |
4821 ort); | |
4822 if (first == error_mark_node) | |
4823 return true; | |
4824 if (first == NULL_TREE) | |
4825 return false; | |
4826 if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_DEPEND) | |
4827 { | |
4828 tree t = OMP_CLAUSE_DECL (c); | |
4829 tree tem = NULL_TREE; | |
4830 if (processing_template_decl) | |
4831 return false; | |
4832 /* Need to evaluate side effects in the length expressions | |
4833 if any. */ | |
4834 while (TREE_CODE (t) == TREE_LIST) | |
4835 { | |
4836 if (TREE_VALUE (t) && TREE_SIDE_EFFECTS (TREE_VALUE (t))) | |
4837 { | |
4838 if (tem == NULL_TREE) | |
4839 tem = TREE_VALUE (t); | |
4840 else | |
4841 tem = build2 (COMPOUND_EXPR, TREE_TYPE (tem), | |
4842 TREE_VALUE (t), tem); | |
4843 } | |
4844 t = TREE_CHAIN (t); | |
4845 } | |
4846 if (tem) | |
4847 first = build2 (COMPOUND_EXPR, TREE_TYPE (first), tem, first); | |
4848 OMP_CLAUSE_DECL (c) = first; | |
4849 } | |
4850 else | |
4851 { | |
4852 unsigned int num = types.length (), i; | |
4853 tree t, side_effects = NULL_TREE, size = NULL_TREE; | |
4854 tree condition = NULL_TREE; | |
4855 | |
4856 if (int_size_in_bytes (TREE_TYPE (first)) <= 0) | |
4857 maybe_zero_len = true; | |
4858 if (processing_template_decl && maybe_zero_len) | |
4859 return false; | |
4860 | |
4861 for (i = num, t = OMP_CLAUSE_DECL (c); i > 0; | |
4862 t = TREE_CHAIN (t)) | |
4863 { | |
4864 tree low_bound = TREE_PURPOSE (t); | |
4865 tree length = TREE_VALUE (t); | |
4866 | |
4867 i--; | |
4868 if (low_bound | |
4869 && TREE_CODE (low_bound) == INTEGER_CST | |
4870 && TYPE_PRECISION (TREE_TYPE (low_bound)) | |
4871 > TYPE_PRECISION (sizetype)) | |
4872 low_bound = fold_convert (sizetype, low_bound); | |
4873 if (length | |
4874 && TREE_CODE (length) == INTEGER_CST | |
4875 && TYPE_PRECISION (TREE_TYPE (length)) | |
4876 > TYPE_PRECISION (sizetype)) | |
4877 length = fold_convert (sizetype, length); | |
4878 if (low_bound == NULL_TREE) | |
4879 low_bound = integer_zero_node; | |
4880 if (!maybe_zero_len && i > first_non_one) | |
4881 { | |
4882 if (integer_nonzerop (low_bound)) | |
4883 goto do_warn_noncontiguous; | |
4884 if (length != NULL_TREE | |
4885 && TREE_CODE (length) == INTEGER_CST | |
4886 && TYPE_DOMAIN (types[i]) | |
4887 && TYPE_MAX_VALUE (TYPE_DOMAIN (types[i])) | |
4888 && TREE_CODE (TYPE_MAX_VALUE (TYPE_DOMAIN (types[i]))) | |
4889 == INTEGER_CST) | |
4890 { | |
4891 tree size; | |
4892 size = size_binop (PLUS_EXPR, | |
4893 TYPE_MAX_VALUE (TYPE_DOMAIN (types[i])), | |
4894 size_one_node); | |
4895 if (!tree_int_cst_equal (length, size)) | |
4896 { | |
4897 do_warn_noncontiguous: | |
4898 error_at (OMP_CLAUSE_LOCATION (c), | |
4899 "array section is not contiguous in %qs " | |
4900 "clause", | |
4901 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
4902 return true; | |
4903 } | |
4904 } | |
4905 if (!processing_template_decl | |
4906 && length != NULL_TREE | |
4907 && TREE_SIDE_EFFECTS (length)) | |
4908 { | |
4909 if (side_effects == NULL_TREE) | |
4910 side_effects = length; | |
4911 else | |
4912 side_effects = build2 (COMPOUND_EXPR, | |
4913 TREE_TYPE (side_effects), | |
4914 length, side_effects); | |
4915 } | |
4916 } | |
4917 else if (processing_template_decl) | |
4918 continue; | |
4919 else | |
4920 { | |
4921 tree l; | |
4922 | |
4923 if (i > first_non_one | |
4924 && ((length && integer_nonzerop (length)) | |
4925 || OMP_CLAUSE_CODE (c) == OMP_CLAUSE_REDUCTION)) | |
4926 continue; | |
4927 if (length) | |
4928 l = fold_convert (sizetype, length); | |
4929 else | |
4930 { | |
4931 l = size_binop (PLUS_EXPR, | |
4932 TYPE_MAX_VALUE (TYPE_DOMAIN (types[i])), | |
4933 size_one_node); | |
4934 l = size_binop (MINUS_EXPR, l, | |
4935 fold_convert (sizetype, low_bound)); | |
4936 } | |
4937 if (i > first_non_one) | |
4938 { | |
4939 l = fold_build2 (NE_EXPR, boolean_type_node, l, | |
4940 size_zero_node); | |
4941 if (condition == NULL_TREE) | |
4942 condition = l; | |
4943 else | |
4944 condition = fold_build2 (BIT_AND_EXPR, boolean_type_node, | |
4945 l, condition); | |
4946 } | |
4947 else if (size == NULL_TREE) | |
4948 { | |
4949 size = size_in_bytes (TREE_TYPE (types[i])); | |
4950 tree eltype = TREE_TYPE (types[num - 1]); | |
4951 while (TREE_CODE (eltype) == ARRAY_TYPE) | |
4952 eltype = TREE_TYPE (eltype); | |
4953 if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_REDUCTION) | |
4954 size = size_binop (EXACT_DIV_EXPR, size, | |
4955 size_in_bytes (eltype)); | |
4956 size = size_binop (MULT_EXPR, size, l); | |
4957 if (condition) | |
4958 size = fold_build3 (COND_EXPR, sizetype, condition, | |
4959 size, size_zero_node); | |
4960 } | |
4961 else | |
4962 size = size_binop (MULT_EXPR, size, l); | |
4963 } | |
4964 } | |
4965 if (!processing_template_decl) | |
4966 { | |
4967 if (side_effects) | |
4968 size = build2 (COMPOUND_EXPR, sizetype, side_effects, size); | |
4969 if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_REDUCTION) | |
4970 { | |
4971 size = size_binop (MINUS_EXPR, size, size_one_node); | |
4972 tree index_type = build_index_type (size); | |
4973 tree eltype = TREE_TYPE (first); | |
4974 while (TREE_CODE (eltype) == ARRAY_TYPE) | |
4975 eltype = TREE_TYPE (eltype); | |
4976 tree type = build_array_type (eltype, index_type); | |
4977 tree ptype = build_pointer_type (eltype); | |
4978 if (TREE_CODE (TREE_TYPE (t)) == REFERENCE_TYPE | |
4979 && POINTER_TYPE_P (TREE_TYPE (TREE_TYPE (t)))) | |
4980 t = convert_from_reference (t); | |
4981 else if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE) | |
4982 t = build_fold_addr_expr (t); | |
4983 tree t2 = build_fold_addr_expr (first); | |
4984 t2 = fold_convert_loc (OMP_CLAUSE_LOCATION (c), | |
4985 ptrdiff_type_node, t2); | |
4986 t2 = fold_build2_loc (OMP_CLAUSE_LOCATION (c), MINUS_EXPR, | |
4987 ptrdiff_type_node, t2, | |
4988 fold_convert_loc (OMP_CLAUSE_LOCATION (c), | |
4989 ptrdiff_type_node, t)); | |
4990 if (tree_fits_shwi_p (t2)) | |
4991 t = build2 (MEM_REF, type, t, | |
4992 build_int_cst (ptype, tree_to_shwi (t2))); | |
4993 else | |
4994 { | |
4995 t2 = fold_convert_loc (OMP_CLAUSE_LOCATION (c), | |
4996 sizetype, t2); | |
4997 t = build2_loc (OMP_CLAUSE_LOCATION (c), POINTER_PLUS_EXPR, | |
4998 TREE_TYPE (t), t, t2); | |
4999 t = build2 (MEM_REF, type, t, build_int_cst (ptype, 0)); | |
5000 } | |
5001 OMP_CLAUSE_DECL (c) = t; | |
5002 return false; | |
5003 } | |
5004 OMP_CLAUSE_DECL (c) = first; | |
5005 OMP_CLAUSE_SIZE (c) = size; | |
5006 if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_MAP | |
5007 || (TREE_CODE (t) == COMPONENT_REF | |
5008 && TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE)) | |
5009 return false; | |
5010 if (ort == C_ORT_OMP || ort == C_ORT_ACC) | |
5011 switch (OMP_CLAUSE_MAP_KIND (c)) | |
5012 { | |
5013 case GOMP_MAP_ALLOC: | |
5014 case GOMP_MAP_TO: | |
5015 case GOMP_MAP_FROM: | |
5016 case GOMP_MAP_TOFROM: | |
5017 case GOMP_MAP_ALWAYS_TO: | |
5018 case GOMP_MAP_ALWAYS_FROM: | |
5019 case GOMP_MAP_ALWAYS_TOFROM: | |
5020 case GOMP_MAP_RELEASE: | |
5021 case GOMP_MAP_DELETE: | |
5022 case GOMP_MAP_FORCE_TO: | |
5023 case GOMP_MAP_FORCE_FROM: | |
5024 case GOMP_MAP_FORCE_TOFROM: | |
5025 case GOMP_MAP_FORCE_PRESENT: | |
5026 OMP_CLAUSE_MAP_MAYBE_ZERO_LENGTH_ARRAY_SECTION (c) = 1; | |
5027 break; | |
5028 default: | |
5029 break; | |
5030 } | |
5031 tree c2 = build_omp_clause (OMP_CLAUSE_LOCATION (c), | |
5032 OMP_CLAUSE_MAP); | |
5033 if ((ort & C_ORT_OMP_DECLARE_SIMD) != C_ORT_OMP && ort != C_ORT_ACC) | |
5034 OMP_CLAUSE_SET_MAP_KIND (c2, GOMP_MAP_POINTER); | |
5035 else if (TREE_CODE (t) == COMPONENT_REF) | |
5036 OMP_CLAUSE_SET_MAP_KIND (c2, GOMP_MAP_ALWAYS_POINTER); | |
5037 else if (REFERENCE_REF_P (t) | |
5038 && TREE_CODE (TREE_OPERAND (t, 0)) == COMPONENT_REF) | |
5039 { | |
5040 t = TREE_OPERAND (t, 0); | |
5041 OMP_CLAUSE_SET_MAP_KIND (c2, GOMP_MAP_ALWAYS_POINTER); | |
5042 } | |
5043 else | |
5044 OMP_CLAUSE_SET_MAP_KIND (c2, GOMP_MAP_FIRSTPRIVATE_POINTER); | |
5045 if (OMP_CLAUSE_MAP_KIND (c2) != GOMP_MAP_FIRSTPRIVATE_POINTER | |
5046 && !cxx_mark_addressable (t)) | |
5047 return false; | |
5048 OMP_CLAUSE_DECL (c2) = t; | |
5049 t = build_fold_addr_expr (first); | |
5050 t = fold_convert_loc (OMP_CLAUSE_LOCATION (c), | |
5051 ptrdiff_type_node, t); | |
5052 tree ptr = OMP_CLAUSE_DECL (c2); | |
5053 ptr = convert_from_reference (ptr); | |
5054 if (!POINTER_TYPE_P (TREE_TYPE (ptr))) | |
5055 ptr = build_fold_addr_expr (ptr); | |
5056 t = fold_build2_loc (OMP_CLAUSE_LOCATION (c), MINUS_EXPR, | |
5057 ptrdiff_type_node, t, | |
5058 fold_convert_loc (OMP_CLAUSE_LOCATION (c), | |
5059 ptrdiff_type_node, ptr)); | |
5060 OMP_CLAUSE_SIZE (c2) = t; | |
5061 OMP_CLAUSE_CHAIN (c2) = OMP_CLAUSE_CHAIN (c); | |
5062 OMP_CLAUSE_CHAIN (c) = c2; | |
5063 ptr = OMP_CLAUSE_DECL (c2); | |
5064 if (OMP_CLAUSE_MAP_KIND (c2) != GOMP_MAP_FIRSTPRIVATE_POINTER | |
5065 && TREE_CODE (TREE_TYPE (ptr)) == REFERENCE_TYPE | |
5066 && POINTER_TYPE_P (TREE_TYPE (TREE_TYPE (ptr)))) | |
5067 { | |
5068 tree c3 = build_omp_clause (OMP_CLAUSE_LOCATION (c), | |
5069 OMP_CLAUSE_MAP); | |
5070 OMP_CLAUSE_SET_MAP_KIND (c3, OMP_CLAUSE_MAP_KIND (c2)); | |
5071 OMP_CLAUSE_DECL (c3) = ptr; | |
5072 if (OMP_CLAUSE_MAP_KIND (c2) == GOMP_MAP_ALWAYS_POINTER) | |
5073 OMP_CLAUSE_DECL (c2) = build_simple_mem_ref (ptr); | |
5074 else | |
5075 OMP_CLAUSE_DECL (c2) = convert_from_reference (ptr); | |
5076 OMP_CLAUSE_SIZE (c3) = size_zero_node; | |
5077 OMP_CLAUSE_CHAIN (c3) = OMP_CLAUSE_CHAIN (c2); | |
5078 OMP_CLAUSE_CHAIN (c2) = c3; | |
5079 } | |
5080 } | |
5081 } | |
5082 return false; | |
5083 } | |
5084 | |
5085 /* Return identifier to look up for omp declare reduction. */ | |
5086 | |
5087 tree | |
5088 omp_reduction_id (enum tree_code reduction_code, tree reduction_id, tree type) | |
5089 { | |
5090 const char *p = NULL; | |
5091 const char *m = NULL; | |
5092 switch (reduction_code) | |
5093 { | |
5094 case PLUS_EXPR: | |
5095 case MULT_EXPR: | |
5096 case MINUS_EXPR: | |
5097 case BIT_AND_EXPR: | |
5098 case BIT_XOR_EXPR: | |
5099 case BIT_IOR_EXPR: | |
5100 case TRUTH_ANDIF_EXPR: | |
5101 case TRUTH_ORIF_EXPR: | |
5102 reduction_id = cp_operator_id (reduction_code); | |
5103 break; | |
5104 case MIN_EXPR: | |
5105 p = "min"; | |
5106 break; | |
5107 case MAX_EXPR: | |
5108 p = "max"; | |
5109 break; | |
5110 default: | |
5111 break; | |
5112 } | |
5113 | |
5114 if (p == NULL) | |
5115 { | |
5116 if (TREE_CODE (reduction_id) != IDENTIFIER_NODE) | |
5117 return error_mark_node; | |
5118 p = IDENTIFIER_POINTER (reduction_id); | |
5119 } | |
5120 | |
5121 if (type != NULL_TREE) | |
5122 m = mangle_type_string (TYPE_MAIN_VARIANT (type)); | |
5123 | |
5124 const char prefix[] = "omp declare reduction "; | |
5125 size_t lenp = sizeof (prefix); | |
5126 if (strncmp (p, prefix, lenp - 1) == 0) | |
5127 lenp = 1; | |
5128 size_t len = strlen (p); | |
5129 size_t lenm = m ? strlen (m) + 1 : 0; | |
5130 char *name = XALLOCAVEC (char, lenp + len + lenm); | |
5131 if (lenp > 1) | |
5132 memcpy (name, prefix, lenp - 1); | |
5133 memcpy (name + lenp - 1, p, len + 1); | |
5134 if (m) | |
5135 { | |
5136 name[lenp + len - 1] = '~'; | |
5137 memcpy (name + lenp + len, m, lenm); | |
5138 } | |
5139 return get_identifier (name); | |
5140 } | |
5141 | |
5142 /* Lookup OpenMP UDR ID for TYPE, return the corresponding artificial | |
5143 FUNCTION_DECL or NULL_TREE if not found. */ | |
5144 | |
5145 static tree | |
5146 omp_reduction_lookup (location_t loc, tree id, tree type, tree *baselinkp, | |
5147 vec<tree> *ambiguousp) | |
5148 { | |
5149 tree orig_id = id; | |
5150 tree baselink = NULL_TREE; | |
5151 if (identifier_p (id)) | |
5152 { | |
5153 cp_id_kind idk; | |
5154 bool nonint_cst_expression_p; | |
5155 const char *error_msg; | |
5156 id = omp_reduction_id (ERROR_MARK, id, type); | |
5157 tree decl = lookup_name (id); | |
5158 if (decl == NULL_TREE) | |
5159 decl = error_mark_node; | |
5160 id = finish_id_expression (id, decl, NULL_TREE, &idk, false, true, | |
5161 &nonint_cst_expression_p, false, true, false, | |
5162 false, &error_msg, loc); | |
5163 if (idk == CP_ID_KIND_UNQUALIFIED | |
5164 && identifier_p (id)) | |
5165 { | |
5166 vec<tree, va_gc> *args = NULL; | |
5167 vec_safe_push (args, build_reference_type (type)); | |
5168 id = perform_koenig_lookup (id, args, tf_none); | |
5169 } | |
5170 } | |
5171 else if (TREE_CODE (id) == SCOPE_REF) | |
5172 id = lookup_qualified_name (TREE_OPERAND (id, 0), | |
5173 omp_reduction_id (ERROR_MARK, | |
5174 TREE_OPERAND (id, 1), | |
5175 type), | |
5176 false, false); | |
5177 tree fns = id; | |
5178 id = NULL_TREE; | |
5179 if (fns && is_overloaded_fn (fns)) | |
5180 { | |
5181 for (lkp_iterator iter (get_fns (fns)); iter; ++iter) | |
5182 { | |
5183 tree fndecl = *iter; | |
5184 if (TREE_CODE (fndecl) == FUNCTION_DECL) | |
5185 { | |
5186 tree argtype = TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (fndecl))); | |
5187 if (same_type_p (TREE_TYPE (argtype), type)) | |
5188 { | |
5189 id = fndecl; | |
5190 break; | |
5191 } | |
5192 } | |
5193 } | |
5194 | |
5195 if (id && BASELINK_P (fns)) | |
5196 { | |
5197 if (baselinkp) | |
5198 *baselinkp = fns; | |
5199 else | |
5200 baselink = fns; | |
5201 } | |
5202 } | |
5203 | |
5204 if (!id && CLASS_TYPE_P (type) && TYPE_BINFO (type)) | |
5205 { | |
5206 vec<tree> ambiguous = vNULL; | |
5207 tree binfo = TYPE_BINFO (type), base_binfo, ret = NULL_TREE; | |
5208 unsigned int ix; | |
5209 if (ambiguousp == NULL) | |
5210 ambiguousp = &ambiguous; | |
5211 for (ix = 0; BINFO_BASE_ITERATE (binfo, ix, base_binfo); ix++) | |
5212 { | |
5213 id = omp_reduction_lookup (loc, orig_id, BINFO_TYPE (base_binfo), | |
5214 baselinkp ? baselinkp : &baselink, | |
5215 ambiguousp); | |
5216 if (id == NULL_TREE) | |
5217 continue; | |
5218 if (!ambiguousp->is_empty ()) | |
5219 ambiguousp->safe_push (id); | |
5220 else if (ret != NULL_TREE) | |
5221 { | |
5222 ambiguousp->safe_push (ret); | |
5223 ambiguousp->safe_push (id); | |
5224 ret = NULL_TREE; | |
5225 } | |
5226 else | |
5227 ret = id; | |
5228 } | |
5229 if (ambiguousp != &ambiguous) | |
5230 return ret; | |
5231 if (!ambiguous.is_empty ()) | |
5232 { | |
5233 const char *str = _("candidates are:"); | |
5234 unsigned int idx; | |
5235 tree udr; | |
5236 error_at (loc, "user defined reduction lookup is ambiguous"); | |
5237 FOR_EACH_VEC_ELT (ambiguous, idx, udr) | |
5238 { | |
5239 inform (DECL_SOURCE_LOCATION (udr), "%s %#qD", str, udr); | |
5240 if (idx == 0) | |
5241 str = get_spaces (str); | |
5242 } | |
5243 ambiguous.release (); | |
5244 ret = error_mark_node; | |
5245 baselink = NULL_TREE; | |
5246 } | |
5247 id = ret; | |
5248 } | |
5249 if (id && baselink) | |
5250 perform_or_defer_access_check (BASELINK_BINFO (baselink), | |
5251 id, id, tf_warning_or_error); | |
5252 return id; | |
5253 } | |
5254 | |
5255 /* Helper function for cp_parser_omp_declare_reduction_exprs | |
5256 and tsubst_omp_udr. | |
5257 Remove CLEANUP_STMT for data (omp_priv variable). | |
5258 Also append INIT_EXPR for DECL_INITIAL of omp_priv after its | |
5259 DECL_EXPR. */ | |
5260 | |
5261 tree | |
5262 cp_remove_omp_priv_cleanup_stmt (tree *tp, int *walk_subtrees, void *data) | |
5263 { | |
5264 if (TYPE_P (*tp)) | |
5265 *walk_subtrees = 0; | |
5266 else if (TREE_CODE (*tp) == CLEANUP_STMT && CLEANUP_DECL (*tp) == (tree) data) | |
5267 *tp = CLEANUP_BODY (*tp); | |
5268 else if (TREE_CODE (*tp) == DECL_EXPR) | |
5269 { | |
5270 tree decl = DECL_EXPR_DECL (*tp); | |
5271 if (!processing_template_decl | |
5272 && decl == (tree) data | |
5273 && DECL_INITIAL (decl) | |
5274 && DECL_INITIAL (decl) != error_mark_node) | |
5275 { | |
5276 tree list = NULL_TREE; | |
5277 append_to_statement_list_force (*tp, &list); | |
5278 tree init_expr = build2 (INIT_EXPR, void_type_node, | |
5279 decl, DECL_INITIAL (decl)); | |
5280 DECL_INITIAL (decl) = NULL_TREE; | |
5281 append_to_statement_list_force (init_expr, &list); | |
5282 *tp = list; | |
5283 } | |
5284 } | |
5285 return NULL_TREE; | |
5286 } | |
5287 | |
5288 /* Data passed from cp_check_omp_declare_reduction to | |
5289 cp_check_omp_declare_reduction_r. */ | |
5290 | |
5291 struct cp_check_omp_declare_reduction_data | |
5292 { | |
5293 location_t loc; | |
5294 tree stmts[7]; | |
5295 bool combiner_p; | |
5296 }; | |
5297 | |
5298 /* Helper function for cp_check_omp_declare_reduction, called via | |
5299 cp_walk_tree. */ | |
5300 | |
5301 static tree | |
5302 cp_check_omp_declare_reduction_r (tree *tp, int *, void *data) | |
5303 { | |
5304 struct cp_check_omp_declare_reduction_data *udr_data | |
5305 = (struct cp_check_omp_declare_reduction_data *) data; | |
5306 if (SSA_VAR_P (*tp) | |
5307 && !DECL_ARTIFICIAL (*tp) | |
5308 && *tp != DECL_EXPR_DECL (udr_data->stmts[udr_data->combiner_p ? 0 : 3]) | |
5309 && *tp != DECL_EXPR_DECL (udr_data->stmts[udr_data->combiner_p ? 1 : 4])) | |
5310 { | |
5311 location_t loc = udr_data->loc; | |
5312 if (udr_data->combiner_p) | |
5313 error_at (loc, "%<#pragma omp declare reduction%> combiner refers to " | |
5314 "variable %qD which is not %<omp_out%> nor %<omp_in%>", | |
5315 *tp); | |
5316 else | |
5317 error_at (loc, "%<#pragma omp declare reduction%> initializer refers " | |
5318 "to variable %qD which is not %<omp_priv%> nor " | |
5319 "%<omp_orig%>", | |
5320 *tp); | |
5321 return *tp; | |
5322 } | |
5323 return NULL_TREE; | |
5324 } | |
5325 | |
5326 /* Diagnose violation of OpenMP #pragma omp declare reduction restrictions. */ | |
5327 | |
5328 void | |
5329 cp_check_omp_declare_reduction (tree udr) | |
5330 { | |
5331 tree type = TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (udr))); | |
5332 gcc_assert (TREE_CODE (type) == REFERENCE_TYPE); | |
5333 type = TREE_TYPE (type); | |
5334 int i; | |
5335 location_t loc = DECL_SOURCE_LOCATION (udr); | |
5336 | |
5337 if (type == error_mark_node) | |
5338 return; | |
5339 if (ARITHMETIC_TYPE_P (type)) | |
5340 { | |
5341 static enum tree_code predef_codes[] | |
5342 = { PLUS_EXPR, MULT_EXPR, MINUS_EXPR, BIT_AND_EXPR, BIT_XOR_EXPR, | |
5343 BIT_IOR_EXPR, TRUTH_ANDIF_EXPR, TRUTH_ORIF_EXPR }; | |
5344 for (i = 0; i < 8; i++) | |
5345 { | |
5346 tree id = omp_reduction_id (predef_codes[i], NULL_TREE, NULL_TREE); | |
5347 const char *n1 = IDENTIFIER_POINTER (DECL_NAME (udr)); | |
5348 const char *n2 = IDENTIFIER_POINTER (id); | |
5349 if (strncmp (n1, n2, IDENTIFIER_LENGTH (id)) == 0 | |
5350 && (n1[IDENTIFIER_LENGTH (id)] == '~' | |
5351 || n1[IDENTIFIER_LENGTH (id)] == '\0')) | |
5352 break; | |
5353 } | |
5354 | |
5355 if (i == 8 | |
5356 && TREE_CODE (type) != COMPLEX_EXPR) | |
5357 { | |
5358 const char prefix_minmax[] = "omp declare reduction m"; | |
5359 size_t prefix_size = sizeof (prefix_minmax) - 1; | |
5360 const char *n = IDENTIFIER_POINTER (DECL_NAME (udr)); | |
5361 if (strncmp (IDENTIFIER_POINTER (DECL_NAME (udr)), | |
5362 prefix_minmax, prefix_size) == 0 | |
5363 && ((n[prefix_size] == 'i' && n[prefix_size + 1] == 'n') | |
5364 || (n[prefix_size] == 'a' && n[prefix_size + 1] == 'x')) | |
5365 && (n[prefix_size + 2] == '~' || n[prefix_size + 2] == '\0')) | |
5366 i = 0; | |
5367 } | |
5368 if (i < 8) | |
5369 { | |
5370 error_at (loc, "predeclared arithmetic type %qT in " | |
5371 "%<#pragma omp declare reduction%>", type); | |
5372 return; | |
5373 } | |
5374 } | |
5375 else if (TREE_CODE (type) == FUNCTION_TYPE | |
5376 || TREE_CODE (type) == METHOD_TYPE | |
5377 || TREE_CODE (type) == ARRAY_TYPE) | |
5378 { | |
5379 error_at (loc, "function or array type %qT in " | |
5380 "%<#pragma omp declare reduction%>", type); | |
5381 return; | |
5382 } | |
5383 else if (TREE_CODE (type) == REFERENCE_TYPE) | |
5384 { | |
5385 error_at (loc, "reference type %qT in %<#pragma omp declare reduction%>", | |
5386 type); | |
5387 return; | |
5388 } | |
5389 else if (TYPE_QUALS_NO_ADDR_SPACE (type)) | |
5390 { | |
5391 error_at (loc, "const, volatile or __restrict qualified type %qT in " | |
5392 "%<#pragma omp declare reduction%>", type); | |
5393 return; | |
5394 } | |
5395 | |
5396 tree body = DECL_SAVED_TREE (udr); | |
5397 if (body == NULL_TREE || TREE_CODE (body) != STATEMENT_LIST) | |
5398 return; | |
5399 | |
5400 tree_stmt_iterator tsi; | |
5401 struct cp_check_omp_declare_reduction_data data; | |
5402 memset (data.stmts, 0, sizeof data.stmts); | |
5403 for (i = 0, tsi = tsi_start (body); | |
5404 i < 7 && !tsi_end_p (tsi); | |
5405 i++, tsi_next (&tsi)) | |
5406 data.stmts[i] = tsi_stmt (tsi); | |
5407 data.loc = loc; | |
5408 gcc_assert (tsi_end_p (tsi)); | |
5409 if (i >= 3) | |
5410 { | |
5411 gcc_assert (TREE_CODE (data.stmts[0]) == DECL_EXPR | |
5412 && TREE_CODE (data.stmts[1]) == DECL_EXPR); | |
5413 if (TREE_NO_WARNING (DECL_EXPR_DECL (data.stmts[0]))) | |
5414 return; | |
5415 data.combiner_p = true; | |
5416 if (cp_walk_tree (&data.stmts[2], cp_check_omp_declare_reduction_r, | |
5417 &data, NULL)) | |
5418 TREE_NO_WARNING (DECL_EXPR_DECL (data.stmts[0])) = 1; | |
5419 } | |
5420 if (i >= 6) | |
5421 { | |
5422 gcc_assert (TREE_CODE (data.stmts[3]) == DECL_EXPR | |
5423 && TREE_CODE (data.stmts[4]) == DECL_EXPR); | |
5424 data.combiner_p = false; | |
5425 if (cp_walk_tree (&data.stmts[5], cp_check_omp_declare_reduction_r, | |
5426 &data, NULL) | |
5427 || cp_walk_tree (&DECL_INITIAL (DECL_EXPR_DECL (data.stmts[3])), | |
5428 cp_check_omp_declare_reduction_r, &data, NULL)) | |
5429 TREE_NO_WARNING (DECL_EXPR_DECL (data.stmts[0])) = 1; | |
5430 if (i == 7) | |
5431 gcc_assert (TREE_CODE (data.stmts[6]) == DECL_EXPR); | |
5432 } | |
5433 } | |
5434 | |
5435 /* Helper function of finish_omp_clauses. Clone STMT as if we were making | |
5436 an inline call. But, remap | |
5437 the OMP_DECL1 VAR_DECL (omp_out resp. omp_orig) to PLACEHOLDER | |
5438 and OMP_DECL2 VAR_DECL (omp_in resp. omp_priv) to DECL. */ | |
5439 | |
5440 static tree | |
5441 clone_omp_udr (tree stmt, tree omp_decl1, tree omp_decl2, | |
5442 tree decl, tree placeholder) | |
5443 { | |
5444 copy_body_data id; | |
5445 hash_map<tree, tree> decl_map; | |
5446 | |
5447 decl_map.put (omp_decl1, placeholder); | |
5448 decl_map.put (omp_decl2, decl); | |
5449 memset (&id, 0, sizeof (id)); | |
5450 id.src_fn = DECL_CONTEXT (omp_decl1); | |
5451 id.dst_fn = current_function_decl; | |
5452 id.src_cfun = DECL_STRUCT_FUNCTION (id.src_fn); | |
5453 id.decl_map = &decl_map; | |
5454 | |
5455 id.copy_decl = copy_decl_no_change; | |
5456 id.transform_call_graph_edges = CB_CGE_DUPLICATE; | |
5457 id.transform_new_cfg = true; | |
5458 id.transform_return_to_modify = false; | |
5459 id.transform_lang_insert_block = NULL; | |
5460 id.eh_lp_nr = 0; | |
5461 walk_tree (&stmt, copy_tree_body_r, &id, NULL); | |
5462 return stmt; | |
5463 } | |
5464 | |
5465 /* Helper function of finish_omp_clauses, called via cp_walk_tree. | |
5466 Find OMP_CLAUSE_PLACEHOLDER (passed in DATA) in *TP. */ | |
5467 | |
5468 static tree | |
5469 find_omp_placeholder_r (tree *tp, int *, void *data) | |
5470 { | |
5471 if (*tp == (tree) data) | |
5472 return *tp; | |
5473 return NULL_TREE; | |
5474 } | |
5475 | |
5476 /* Helper function of finish_omp_clauses. Handle OMP_CLAUSE_REDUCTION C. | |
5477 Return true if there is some error and the clause should be removed. */ | |
5478 | |
5479 static bool | |
5480 finish_omp_reduction_clause (tree c, bool *need_default_ctor, bool *need_dtor) | |
5481 { | |
5482 tree t = OMP_CLAUSE_DECL (c); | |
5483 bool predefined = false; | |
5484 if (TREE_CODE (t) == TREE_LIST) | |
5485 { | |
5486 gcc_assert (processing_template_decl); | |
5487 return false; | |
5488 } | |
5489 tree type = TREE_TYPE (t); | |
5490 if (TREE_CODE (t) == MEM_REF) | |
5491 type = TREE_TYPE (type); | |
5492 if (TREE_CODE (type) == REFERENCE_TYPE) | |
5493 type = TREE_TYPE (type); | |
5494 if (TREE_CODE (type) == ARRAY_TYPE) | |
5495 { | |
5496 tree oatype = type; | |
5497 gcc_assert (TREE_CODE (t) != MEM_REF); | |
5498 while (TREE_CODE (type) == ARRAY_TYPE) | |
5499 type = TREE_TYPE (type); | |
5500 if (!processing_template_decl) | |
5501 { | |
5502 t = require_complete_type (t); | |
5503 if (t == error_mark_node) | |
5504 return true; | |
5505 tree size = size_binop (EXACT_DIV_EXPR, TYPE_SIZE_UNIT (oatype), | |
5506 TYPE_SIZE_UNIT (type)); | |
5507 if (integer_zerop (size)) | |
5508 { | |
5509 error ("%qE in %<reduction%> clause is a zero size array", | |
5510 omp_clause_printable_decl (t)); | |
5511 return true; | |
5512 } | |
5513 size = size_binop (MINUS_EXPR, size, size_one_node); | |
5514 tree index_type = build_index_type (size); | |
5515 tree atype = build_array_type (type, index_type); | |
5516 tree ptype = build_pointer_type (type); | |
5517 if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE) | |
5518 t = build_fold_addr_expr (t); | |
5519 t = build2 (MEM_REF, atype, t, build_int_cst (ptype, 0)); | |
5520 OMP_CLAUSE_DECL (c) = t; | |
5521 } | |
5522 } | |
5523 if (type == error_mark_node) | |
5524 return true; | |
5525 else if (ARITHMETIC_TYPE_P (type)) | |
5526 switch (OMP_CLAUSE_REDUCTION_CODE (c)) | |
5527 { | |
5528 case PLUS_EXPR: | |
5529 case MULT_EXPR: | |
5530 case MINUS_EXPR: | |
5531 predefined = true; | |
5532 break; | |
5533 case MIN_EXPR: | |
5534 case MAX_EXPR: | |
5535 if (TREE_CODE (type) == COMPLEX_TYPE) | |
5536 break; | |
5537 predefined = true; | |
5538 break; | |
5539 case BIT_AND_EXPR: | |
5540 case BIT_IOR_EXPR: | |
5541 case BIT_XOR_EXPR: | |
5542 if (FLOAT_TYPE_P (type) || TREE_CODE (type) == COMPLEX_TYPE) | |
5543 break; | |
5544 predefined = true; | |
5545 break; | |
5546 case TRUTH_ANDIF_EXPR: | |
5547 case TRUTH_ORIF_EXPR: | |
5548 if (FLOAT_TYPE_P (type)) | |
5549 break; | |
5550 predefined = true; | |
5551 break; | |
5552 default: | |
5553 break; | |
5554 } | |
5555 else if (TYPE_READONLY (type)) | |
5556 { | |
5557 error ("%qE has const type for %<reduction%>", | |
5558 omp_clause_printable_decl (t)); | |
5559 return true; | |
5560 } | |
5561 else if (!processing_template_decl) | |
5562 { | |
5563 t = require_complete_type (t); | |
5564 if (t == error_mark_node) | |
5565 return true; | |
5566 OMP_CLAUSE_DECL (c) = t; | |
5567 } | |
5568 | |
5569 if (predefined) | |
5570 { | |
5571 OMP_CLAUSE_REDUCTION_PLACEHOLDER (c) = NULL_TREE; | |
5572 return false; | |
5573 } | |
5574 else if (processing_template_decl) | |
5575 return false; | |
5576 | |
5577 tree id = OMP_CLAUSE_REDUCTION_PLACEHOLDER (c); | |
5578 | |
5579 type = TYPE_MAIN_VARIANT (type); | |
5580 OMP_CLAUSE_REDUCTION_PLACEHOLDER (c) = NULL_TREE; | |
5581 if (id == NULL_TREE) | |
5582 id = omp_reduction_id (OMP_CLAUSE_REDUCTION_CODE (c), | |
5583 NULL_TREE, NULL_TREE); | |
5584 id = omp_reduction_lookup (OMP_CLAUSE_LOCATION (c), id, type, NULL, NULL); | |
5585 if (id) | |
5586 { | |
5587 if (id == error_mark_node) | |
5588 return true; | |
5589 mark_used (id); | |
5590 tree body = DECL_SAVED_TREE (id); | |
5591 if (!body) | |
5592 return true; | |
5593 if (TREE_CODE (body) == STATEMENT_LIST) | |
5594 { | |
5595 tree_stmt_iterator tsi; | |
5596 tree placeholder = NULL_TREE, decl_placeholder = NULL_TREE; | |
5597 int i; | |
5598 tree stmts[7]; | |
5599 tree atype = TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (id))); | |
5600 atype = TREE_TYPE (atype); | |
5601 bool need_static_cast = !same_type_p (type, atype); | |
5602 memset (stmts, 0, sizeof stmts); | |
5603 for (i = 0, tsi = tsi_start (body); | |
5604 i < 7 && !tsi_end_p (tsi); | |
5605 i++, tsi_next (&tsi)) | |
5606 stmts[i] = tsi_stmt (tsi); | |
5607 gcc_assert (tsi_end_p (tsi)); | |
5608 | |
5609 if (i >= 3) | |
5610 { | |
5611 gcc_assert (TREE_CODE (stmts[0]) == DECL_EXPR | |
5612 && TREE_CODE (stmts[1]) == DECL_EXPR); | |
5613 placeholder = build_lang_decl (VAR_DECL, NULL_TREE, type); | |
5614 DECL_ARTIFICIAL (placeholder) = 1; | |
5615 DECL_IGNORED_P (placeholder) = 1; | |
5616 OMP_CLAUSE_REDUCTION_PLACEHOLDER (c) = placeholder; | |
5617 if (TREE_CODE (t) == MEM_REF) | |
5618 { | |
5619 decl_placeholder = build_lang_decl (VAR_DECL, NULL_TREE, | |
5620 type); | |
5621 DECL_ARTIFICIAL (decl_placeholder) = 1; | |
5622 DECL_IGNORED_P (decl_placeholder) = 1; | |
5623 OMP_CLAUSE_REDUCTION_DECL_PLACEHOLDER (c) = decl_placeholder; | |
5624 } | |
5625 if (TREE_ADDRESSABLE (DECL_EXPR_DECL (stmts[0]))) | |
5626 cxx_mark_addressable (placeholder); | |
5627 if (TREE_ADDRESSABLE (DECL_EXPR_DECL (stmts[1])) | |
5628 && TREE_CODE (TREE_TYPE (OMP_CLAUSE_DECL (c))) | |
5629 != REFERENCE_TYPE) | |
5630 cxx_mark_addressable (decl_placeholder ? decl_placeholder | |
5631 : OMP_CLAUSE_DECL (c)); | |
5632 tree omp_out = placeholder; | |
5633 tree omp_in = decl_placeholder ? decl_placeholder | |
5634 : convert_from_reference (OMP_CLAUSE_DECL (c)); | |
5635 if (need_static_cast) | |
5636 { | |
5637 tree rtype = build_reference_type (atype); | |
5638 omp_out = build_static_cast (rtype, omp_out, | |
5639 tf_warning_or_error); | |
5640 omp_in = build_static_cast (rtype, omp_in, | |
5641 tf_warning_or_error); | |
5642 if (omp_out == error_mark_node || omp_in == error_mark_node) | |
5643 return true; | |
5644 omp_out = convert_from_reference (omp_out); | |
5645 omp_in = convert_from_reference (omp_in); | |
5646 } | |
5647 OMP_CLAUSE_REDUCTION_MERGE (c) | |
5648 = clone_omp_udr (stmts[2], DECL_EXPR_DECL (stmts[0]), | |
5649 DECL_EXPR_DECL (stmts[1]), omp_in, omp_out); | |
5650 } | |
5651 if (i >= 6) | |
5652 { | |
5653 gcc_assert (TREE_CODE (stmts[3]) == DECL_EXPR | |
5654 && TREE_CODE (stmts[4]) == DECL_EXPR); | |
5655 if (TREE_ADDRESSABLE (DECL_EXPR_DECL (stmts[3]))) | |
5656 cxx_mark_addressable (decl_placeholder ? decl_placeholder | |
5657 : OMP_CLAUSE_DECL (c)); | |
5658 if (TREE_ADDRESSABLE (DECL_EXPR_DECL (stmts[4]))) | |
5659 cxx_mark_addressable (placeholder); | |
5660 tree omp_priv = decl_placeholder ? decl_placeholder | |
5661 : convert_from_reference (OMP_CLAUSE_DECL (c)); | |
5662 tree omp_orig = placeholder; | |
5663 if (need_static_cast) | |
5664 { | |
5665 if (i == 7) | |
5666 { | |
5667 error_at (OMP_CLAUSE_LOCATION (c), | |
5668 "user defined reduction with constructor " | |
5669 "initializer for base class %qT", atype); | |
5670 return true; | |
5671 } | |
5672 tree rtype = build_reference_type (atype); | |
5673 omp_priv = build_static_cast (rtype, omp_priv, | |
5674 tf_warning_or_error); | |
5675 omp_orig = build_static_cast (rtype, omp_orig, | |
5676 tf_warning_or_error); | |
5677 if (omp_priv == error_mark_node | |
5678 || omp_orig == error_mark_node) | |
5679 return true; | |
5680 omp_priv = convert_from_reference (omp_priv); | |
5681 omp_orig = convert_from_reference (omp_orig); | |
5682 } | |
5683 if (i == 6) | |
5684 *need_default_ctor = true; | |
5685 OMP_CLAUSE_REDUCTION_INIT (c) | |
5686 = clone_omp_udr (stmts[5], DECL_EXPR_DECL (stmts[4]), | |
5687 DECL_EXPR_DECL (stmts[3]), | |
5688 omp_priv, omp_orig); | |
5689 if (cp_walk_tree (&OMP_CLAUSE_REDUCTION_INIT (c), | |
5690 find_omp_placeholder_r, placeholder, NULL)) | |
5691 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF (c) = 1; | |
5692 } | |
5693 else if (i >= 3) | |
5694 { | |
5695 if (CLASS_TYPE_P (type) && !pod_type_p (type)) | |
5696 *need_default_ctor = true; | |
5697 else | |
5698 { | |
5699 tree init; | |
5700 tree v = decl_placeholder ? decl_placeholder | |
5701 : convert_from_reference (t); | |
5702 if (AGGREGATE_TYPE_P (TREE_TYPE (v))) | |
5703 init = build_constructor (TREE_TYPE (v), NULL); | |
5704 else | |
5705 init = fold_convert (TREE_TYPE (v), integer_zero_node); | |
5706 OMP_CLAUSE_REDUCTION_INIT (c) | |
5707 = build2 (INIT_EXPR, TREE_TYPE (v), v, init); | |
5708 } | |
5709 } | |
5710 } | |
5711 } | |
5712 if (OMP_CLAUSE_REDUCTION_PLACEHOLDER (c)) | |
5713 *need_dtor = true; | |
5714 else | |
5715 { | |
5716 error ("user defined reduction not found for %qE", | |
5717 omp_clause_printable_decl (t)); | |
5718 return true; | |
5719 } | |
5720 if (TREE_CODE (OMP_CLAUSE_DECL (c)) == MEM_REF) | |
5721 gcc_assert (TYPE_SIZE_UNIT (type) | |
5722 && TREE_CODE (TYPE_SIZE_UNIT (type)) == INTEGER_CST); | |
5723 return false; | |
5724 } | |
5725 | |
5726 /* Called from finish_struct_1. linear(this) or linear(this:step) | |
5727 clauses might not be finalized yet because the class has been incomplete | |
5728 when parsing #pragma omp declare simd methods. Fix those up now. */ | |
5729 | |
5730 void | |
5731 finish_omp_declare_simd_methods (tree t) | |
5732 { | |
5733 if (processing_template_decl) | |
5734 return; | |
5735 | |
5736 for (tree x = TYPE_FIELDS (t); x; x = DECL_CHAIN (x)) | |
5737 { | |
5738 if (TREE_CODE (TREE_TYPE (x)) != METHOD_TYPE) | |
5739 continue; | |
5740 tree ods = lookup_attribute ("omp declare simd", DECL_ATTRIBUTES (x)); | |
5741 if (!ods || !TREE_VALUE (ods)) | |
5742 continue; | |
5743 for (tree c = TREE_VALUE (TREE_VALUE (ods)); c; c = OMP_CLAUSE_CHAIN (c)) | |
5744 if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LINEAR | |
5745 && integer_zerop (OMP_CLAUSE_DECL (c)) | |
5746 && OMP_CLAUSE_LINEAR_STEP (c) | |
5747 && TREE_CODE (TREE_TYPE (OMP_CLAUSE_LINEAR_STEP (c))) | |
5748 == POINTER_TYPE) | |
5749 { | |
5750 tree s = OMP_CLAUSE_LINEAR_STEP (c); | |
5751 s = fold_convert_loc (OMP_CLAUSE_LOCATION (c), sizetype, s); | |
5752 s = fold_build2_loc (OMP_CLAUSE_LOCATION (c), MULT_EXPR, | |
5753 sizetype, s, TYPE_SIZE_UNIT (t)); | |
5754 OMP_CLAUSE_LINEAR_STEP (c) = s; | |
5755 } | |
5756 } | |
5757 } | |
5758 | |
5759 /* Adjust sink depend clause to take into account pointer offsets. | |
5760 | |
5761 Return TRUE if there was a problem processing the offset, and the | |
5762 whole clause should be removed. */ | |
5763 | |
5764 static bool | |
5765 cp_finish_omp_clause_depend_sink (tree sink_clause) | |
5766 { | |
5767 tree t = OMP_CLAUSE_DECL (sink_clause); | |
5768 gcc_assert (TREE_CODE (t) == TREE_LIST); | |
5769 | |
5770 /* Make sure we don't adjust things twice for templates. */ | |
5771 if (processing_template_decl) | |
5772 return false; | |
5773 | |
5774 for (; t; t = TREE_CHAIN (t)) | |
5775 { | |
5776 tree decl = TREE_VALUE (t); | |
5777 if (TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE) | |
5778 { | |
5779 tree offset = TREE_PURPOSE (t); | |
5780 bool neg = wi::neg_p (wi::to_wide (offset)); | |
5781 offset = fold_unary (ABS_EXPR, TREE_TYPE (offset), offset); | |
5782 decl = mark_rvalue_use (decl); | |
5783 decl = convert_from_reference (decl); | |
5784 tree t2 = pointer_int_sum (OMP_CLAUSE_LOCATION (sink_clause), | |
5785 neg ? MINUS_EXPR : PLUS_EXPR, | |
5786 decl, offset); | |
5787 t2 = fold_build2_loc (OMP_CLAUSE_LOCATION (sink_clause), | |
5788 MINUS_EXPR, sizetype, | |
5789 fold_convert (sizetype, t2), | |
5790 fold_convert (sizetype, decl)); | |
5791 if (t2 == error_mark_node) | |
5792 return true; | |
5793 TREE_PURPOSE (t) = t2; | |
5794 } | |
5795 } | |
5796 return false; | |
5797 } | |
5798 | |
5799 /* For all elements of CLAUSES, validate them vs OpenMP constraints. | |
5800 Remove any elements from the list that are invalid. */ | |
5801 | |
5802 tree | |
5803 finish_omp_clauses (tree clauses, enum c_omp_region_type ort) | |
5804 { | |
5805 bitmap_head generic_head, firstprivate_head, lastprivate_head; | |
5806 bitmap_head aligned_head, map_head, map_field_head, oacc_reduction_head; | |
5807 tree c, t, *pc; | |
5808 tree safelen = NULL_TREE; | |
5809 bool branch_seen = false; | |
5810 bool copyprivate_seen = false; | |
5811 bool ordered_seen = false; | |
5812 bool oacc_async = false; | |
5813 | |
5814 bitmap_obstack_initialize (NULL); | |
5815 bitmap_initialize (&generic_head, &bitmap_default_obstack); | |
5816 bitmap_initialize (&firstprivate_head, &bitmap_default_obstack); | |
5817 bitmap_initialize (&lastprivate_head, &bitmap_default_obstack); | |
5818 bitmap_initialize (&aligned_head, &bitmap_default_obstack); | |
5819 bitmap_initialize (&map_head, &bitmap_default_obstack); | |
5820 bitmap_initialize (&map_field_head, &bitmap_default_obstack); | |
5821 bitmap_initialize (&oacc_reduction_head, &bitmap_default_obstack); | |
5822 | |
5823 if (ort & C_ORT_ACC) | |
5824 for (c = clauses; c; c = OMP_CLAUSE_CHAIN (c)) | |
5825 if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_ASYNC) | |
5826 { | |
5827 oacc_async = true; | |
5828 break; | |
5829 } | |
5830 | |
5831 for (pc = &clauses, c = clauses; c ; c = *pc) | |
5832 { | |
5833 bool remove = false; | |
5834 bool field_ok = false; | |
5835 | |
5836 switch (OMP_CLAUSE_CODE (c)) | |
5837 { | |
5838 case OMP_CLAUSE_SHARED: | |
5839 field_ok = ((ort & C_ORT_OMP_DECLARE_SIMD) == C_ORT_OMP); | |
5840 goto check_dup_generic; | |
5841 case OMP_CLAUSE_PRIVATE: | |
5842 field_ok = ((ort & C_ORT_OMP_DECLARE_SIMD) == C_ORT_OMP); | |
5843 goto check_dup_generic; | |
5844 case OMP_CLAUSE_REDUCTION: | |
5845 field_ok = ((ort & C_ORT_OMP_DECLARE_SIMD) == C_ORT_OMP); | |
5846 t = OMP_CLAUSE_DECL (c); | |
5847 if (TREE_CODE (t) == TREE_LIST) | |
5848 { | |
5849 if (handle_omp_array_sections (c, ort)) | |
5850 { | |
5851 remove = true; | |
5852 break; | |
5853 } | |
5854 if (TREE_CODE (t) == TREE_LIST) | |
5855 { | |
5856 while (TREE_CODE (t) == TREE_LIST) | |
5857 t = TREE_CHAIN (t); | |
5858 } | |
5859 else | |
5860 { | |
5861 gcc_assert (TREE_CODE (t) == MEM_REF); | |
5862 t = TREE_OPERAND (t, 0); | |
5863 if (TREE_CODE (t) == POINTER_PLUS_EXPR) | |
5864 t = TREE_OPERAND (t, 0); | |
5865 if (TREE_CODE (t) == ADDR_EXPR | |
5866 || TREE_CODE (t) == INDIRECT_REF) | |
5867 t = TREE_OPERAND (t, 0); | |
5868 } | |
5869 tree n = omp_clause_decl_field (t); | |
5870 if (n) | |
5871 t = n; | |
5872 goto check_dup_generic_t; | |
5873 } | |
5874 if (oacc_async) | |
5875 cxx_mark_addressable (t); | |
5876 goto check_dup_generic; | |
5877 case OMP_CLAUSE_COPYPRIVATE: | |
5878 copyprivate_seen = true; | |
5879 field_ok = ((ort & C_ORT_OMP_DECLARE_SIMD) == C_ORT_OMP); | |
5880 goto check_dup_generic; | |
5881 case OMP_CLAUSE_COPYIN: | |
5882 goto check_dup_generic; | |
5883 case OMP_CLAUSE_LINEAR: | |
5884 field_ok = ((ort & C_ORT_OMP_DECLARE_SIMD) == C_ORT_OMP); | |
5885 t = OMP_CLAUSE_DECL (c); | |
5886 if (ort != C_ORT_OMP_DECLARE_SIMD | |
5887 && OMP_CLAUSE_LINEAR_KIND (c) != OMP_CLAUSE_LINEAR_DEFAULT) | |
5888 { | |
5889 error_at (OMP_CLAUSE_LOCATION (c), | |
5890 "modifier should not be specified in %<linear%> " | |
5891 "clause on %<simd%> or %<for%> constructs"); | |
5892 OMP_CLAUSE_LINEAR_KIND (c) = OMP_CLAUSE_LINEAR_DEFAULT; | |
5893 } | |
5894 if ((VAR_P (t) || TREE_CODE (t) == PARM_DECL) | |
5895 && !type_dependent_expression_p (t)) | |
5896 { | |
5897 tree type = TREE_TYPE (t); | |
5898 if ((OMP_CLAUSE_LINEAR_KIND (c) == OMP_CLAUSE_LINEAR_REF | |
5899 || OMP_CLAUSE_LINEAR_KIND (c) == OMP_CLAUSE_LINEAR_UVAL) | |
5900 && TREE_CODE (type) != REFERENCE_TYPE) | |
5901 { | |
5902 error ("linear clause with %qs modifier applied to " | |
5903 "non-reference variable with %qT type", | |
5904 OMP_CLAUSE_LINEAR_KIND (c) == OMP_CLAUSE_LINEAR_REF | |
5905 ? "ref" : "uval", TREE_TYPE (t)); | |
5906 remove = true; | |
5907 break; | |
5908 } | |
5909 if (TREE_CODE (type) == REFERENCE_TYPE) | |
5910 type = TREE_TYPE (type); | |
5911 if (ort == C_ORT_CILK) | |
5912 { | |
5913 if (!INTEGRAL_TYPE_P (type) | |
5914 && !SCALAR_FLOAT_TYPE_P (type) | |
5915 && TREE_CODE (type) != POINTER_TYPE) | |
5916 { | |
5917 error ("linear clause applied to non-integral, " | |
5918 "non-floating, non-pointer variable with %qT type", | |
5919 TREE_TYPE (t)); | |
5920 remove = true; | |
5921 break; | |
5922 } | |
5923 } | |
5924 else if (OMP_CLAUSE_LINEAR_KIND (c) != OMP_CLAUSE_LINEAR_REF) | |
5925 { | |
5926 if (!INTEGRAL_TYPE_P (type) | |
5927 && TREE_CODE (type) != POINTER_TYPE) | |
5928 { | |
5929 error ("linear clause applied to non-integral non-pointer" | |
5930 " variable with %qT type", TREE_TYPE (t)); | |
5931 remove = true; | |
5932 break; | |
5933 } | |
5934 } | |
5935 } | |
5936 t = OMP_CLAUSE_LINEAR_STEP (c); | |
5937 if (t == NULL_TREE) | |
5938 t = integer_one_node; | |
5939 if (t == error_mark_node) | |
5940 { | |
5941 remove = true; | |
5942 break; | |
5943 } | |
5944 else if (!type_dependent_expression_p (t) | |
5945 && !INTEGRAL_TYPE_P (TREE_TYPE (t)) | |
5946 && (ort != C_ORT_OMP_DECLARE_SIMD | |
5947 || TREE_CODE (t) != PARM_DECL | |
5948 || TREE_CODE (TREE_TYPE (t)) != REFERENCE_TYPE | |
5949 || !INTEGRAL_TYPE_P (TREE_TYPE (TREE_TYPE (t))))) | |
5950 { | |
5951 error ("linear step expression must be integral"); | |
5952 remove = true; | |
5953 break; | |
5954 } | |
5955 else | |
5956 { | |
5957 t = mark_rvalue_use (t); | |
5958 if (ort == C_ORT_OMP_DECLARE_SIMD && TREE_CODE (t) == PARM_DECL) | |
5959 { | |
5960 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE (c) = 1; | |
5961 goto check_dup_generic; | |
5962 } | |
5963 if (!processing_template_decl | |
5964 && (VAR_P (OMP_CLAUSE_DECL (c)) | |
5965 || TREE_CODE (OMP_CLAUSE_DECL (c)) == PARM_DECL)) | |
5966 { | |
5967 if (ort == C_ORT_OMP_DECLARE_SIMD) | |
5968 { | |
5969 t = maybe_constant_value (t); | |
5970 if (TREE_CODE (t) != INTEGER_CST) | |
5971 { | |
5972 error_at (OMP_CLAUSE_LOCATION (c), | |
5973 "%<linear%> clause step %qE is neither " | |
5974 "constant nor a parameter", t); | |
5975 remove = true; | |
5976 break; | |
5977 } | |
5978 } | |
5979 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
5980 tree type = TREE_TYPE (OMP_CLAUSE_DECL (c)); | |
5981 if (TREE_CODE (type) == REFERENCE_TYPE) | |
5982 type = TREE_TYPE (type); | |
5983 if (OMP_CLAUSE_LINEAR_KIND (c) == OMP_CLAUSE_LINEAR_REF) | |
5984 { | |
5985 type = build_pointer_type (type); | |
5986 tree d = fold_convert (type, OMP_CLAUSE_DECL (c)); | |
5987 t = pointer_int_sum (OMP_CLAUSE_LOCATION (c), PLUS_EXPR, | |
5988 d, t); | |
5989 t = fold_build2_loc (OMP_CLAUSE_LOCATION (c), | |
5990 MINUS_EXPR, sizetype, | |
5991 fold_convert (sizetype, t), | |
5992 fold_convert (sizetype, d)); | |
5993 if (t == error_mark_node) | |
5994 { | |
5995 remove = true; | |
5996 break; | |
5997 } | |
5998 } | |
5999 else if (TREE_CODE (type) == POINTER_TYPE | |
6000 /* Can't multiply the step yet if *this | |
6001 is still incomplete type. */ | |
6002 && (ort != C_ORT_OMP_DECLARE_SIMD | |
6003 || TREE_CODE (OMP_CLAUSE_DECL (c)) != PARM_DECL | |
6004 || !DECL_ARTIFICIAL (OMP_CLAUSE_DECL (c)) | |
6005 || DECL_NAME (OMP_CLAUSE_DECL (c)) | |
6006 != this_identifier | |
6007 || !TYPE_BEING_DEFINED (TREE_TYPE (type)))) | |
6008 { | |
6009 tree d = convert_from_reference (OMP_CLAUSE_DECL (c)); | |
6010 t = pointer_int_sum (OMP_CLAUSE_LOCATION (c), PLUS_EXPR, | |
6011 d, t); | |
6012 t = fold_build2_loc (OMP_CLAUSE_LOCATION (c), | |
6013 MINUS_EXPR, sizetype, | |
6014 fold_convert (sizetype, t), | |
6015 fold_convert (sizetype, d)); | |
6016 if (t == error_mark_node) | |
6017 { | |
6018 remove = true; | |
6019 break; | |
6020 } | |
6021 } | |
6022 else | |
6023 t = fold_convert (type, t); | |
6024 } | |
6025 OMP_CLAUSE_LINEAR_STEP (c) = t; | |
6026 } | |
6027 goto check_dup_generic; | |
6028 check_dup_generic: | |
6029 t = omp_clause_decl_field (OMP_CLAUSE_DECL (c)); | |
6030 if (t) | |
6031 { | |
6032 if (!remove && OMP_CLAUSE_CODE (c) != OMP_CLAUSE_SHARED) | |
6033 omp_note_field_privatization (t, OMP_CLAUSE_DECL (c)); | |
6034 } | |
6035 else | |
6036 t = OMP_CLAUSE_DECL (c); | |
6037 check_dup_generic_t: | |
6038 if (t == current_class_ptr | |
6039 && (ort != C_ORT_OMP_DECLARE_SIMD | |
6040 || (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_LINEAR | |
6041 && OMP_CLAUSE_CODE (c) != OMP_CLAUSE_UNIFORM))) | |
6042 { | |
6043 error ("%<this%> allowed in OpenMP only in %<declare simd%>" | |
6044 " clauses"); | |
6045 remove = true; | |
6046 break; | |
6047 } | |
6048 if (!VAR_P (t) && TREE_CODE (t) != PARM_DECL | |
6049 && (!field_ok || TREE_CODE (t) != FIELD_DECL)) | |
6050 { | |
6051 if (processing_template_decl && TREE_CODE (t) != OVERLOAD) | |
6052 break; | |
6053 if (DECL_P (t)) | |
6054 error ("%qD is not a variable in clause %qs", t, | |
6055 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6056 else | |
6057 error ("%qE is not a variable in clause %qs", t, | |
6058 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6059 remove = true; | |
6060 } | |
6061 else if (ort == C_ORT_ACC | |
6062 && OMP_CLAUSE_CODE (c) == OMP_CLAUSE_REDUCTION) | |
6063 { | |
6064 if (bitmap_bit_p (&oacc_reduction_head, DECL_UID (t))) | |
6065 { | |
6066 error ("%qD appears more than once in reduction clauses", t); | |
6067 remove = true; | |
6068 } | |
6069 else | |
6070 bitmap_set_bit (&oacc_reduction_head, DECL_UID (t)); | |
6071 } | |
6072 else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
6073 || bitmap_bit_p (&firstprivate_head, DECL_UID (t)) | |
6074 || bitmap_bit_p (&lastprivate_head, DECL_UID (t))) | |
6075 { | |
6076 error ("%qD appears more than once in data clauses", t); | |
6077 remove = true; | |
6078 } | |
6079 else if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_PRIVATE | |
6080 && bitmap_bit_p (&map_head, DECL_UID (t))) | |
6081 { | |
6082 if (ort == C_ORT_ACC) | |
6083 error ("%qD appears more than once in data clauses", t); | |
6084 else | |
6085 error ("%qD appears both in data and map clauses", t); | |
6086 remove = true; | |
6087 } | |
6088 else | |
6089 bitmap_set_bit (&generic_head, DECL_UID (t)); | |
6090 if (!field_ok) | |
6091 break; | |
6092 handle_field_decl: | |
6093 if (!remove | |
6094 && TREE_CODE (t) == FIELD_DECL | |
6095 && t == OMP_CLAUSE_DECL (c) | |
6096 && ort != C_ORT_ACC) | |
6097 { | |
6098 OMP_CLAUSE_DECL (c) | |
6099 = omp_privatize_field (t, (OMP_CLAUSE_CODE (c) | |
6100 == OMP_CLAUSE_SHARED)); | |
6101 if (OMP_CLAUSE_DECL (c) == error_mark_node) | |
6102 remove = true; | |
6103 } | |
6104 break; | |
6105 | |
6106 case OMP_CLAUSE_FIRSTPRIVATE: | |
6107 t = omp_clause_decl_field (OMP_CLAUSE_DECL (c)); | |
6108 if (t) | |
6109 omp_note_field_privatization (t, OMP_CLAUSE_DECL (c)); | |
6110 else | |
6111 t = OMP_CLAUSE_DECL (c); | |
6112 if (ort != C_ORT_ACC && t == current_class_ptr) | |
6113 { | |
6114 error ("%<this%> allowed in OpenMP only in %<declare simd%>" | |
6115 " clauses"); | |
6116 remove = true; | |
6117 break; | |
6118 } | |
6119 if (!VAR_P (t) && TREE_CODE (t) != PARM_DECL | |
6120 && ((ort & C_ORT_OMP_DECLARE_SIMD) != C_ORT_OMP | |
6121 || TREE_CODE (t) != FIELD_DECL)) | |
6122 { | |
6123 if (processing_template_decl && TREE_CODE (t) != OVERLOAD) | |
6124 break; | |
6125 if (DECL_P (t)) | |
6126 error ("%qD is not a variable in clause %<firstprivate%>", t); | |
6127 else | |
6128 error ("%qE is not a variable in clause %<firstprivate%>", t); | |
6129 remove = true; | |
6130 } | |
6131 else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
6132 || bitmap_bit_p (&firstprivate_head, DECL_UID (t))) | |
6133 { | |
6134 error ("%qD appears more than once in data clauses", t); | |
6135 remove = true; | |
6136 } | |
6137 else if (bitmap_bit_p (&map_head, DECL_UID (t))) | |
6138 { | |
6139 if (ort == C_ORT_ACC) | |
6140 error ("%qD appears more than once in data clauses", t); | |
6141 else | |
6142 error ("%qD appears both in data and map clauses", t); | |
6143 remove = true; | |
6144 } | |
6145 else | |
6146 bitmap_set_bit (&firstprivate_head, DECL_UID (t)); | |
6147 goto handle_field_decl; | |
6148 | |
6149 case OMP_CLAUSE_LASTPRIVATE: | |
6150 t = omp_clause_decl_field (OMP_CLAUSE_DECL (c)); | |
6151 if (t) | |
6152 omp_note_field_privatization (t, OMP_CLAUSE_DECL (c)); | |
6153 else | |
6154 t = OMP_CLAUSE_DECL (c); | |
6155 if (t == current_class_ptr) | |
6156 { | |
6157 error ("%<this%> allowed in OpenMP only in %<declare simd%>" | |
6158 " clauses"); | |
6159 remove = true; | |
6160 break; | |
6161 } | |
6162 if (!VAR_P (t) && TREE_CODE (t) != PARM_DECL | |
6163 && ((ort & C_ORT_OMP_DECLARE_SIMD) != C_ORT_OMP | |
6164 || TREE_CODE (t) != FIELD_DECL)) | |
6165 { | |
6166 if (processing_template_decl && TREE_CODE (t) != OVERLOAD) | |
6167 break; | |
6168 if (DECL_P (t)) | |
6169 error ("%qD is not a variable in clause %<lastprivate%>", t); | |
6170 else | |
6171 error ("%qE is not a variable in clause %<lastprivate%>", t); | |
6172 remove = true; | |
6173 } | |
6174 else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
6175 || bitmap_bit_p (&lastprivate_head, DECL_UID (t))) | |
6176 { | |
6177 error ("%qD appears more than once in data clauses", t); | |
6178 remove = true; | |
6179 } | |
6180 else | |
6181 bitmap_set_bit (&lastprivate_head, DECL_UID (t)); | |
6182 goto handle_field_decl; | |
6183 | |
6184 case OMP_CLAUSE_IF: | |
6185 t = OMP_CLAUSE_IF_EXPR (c); | |
6186 t = maybe_convert_cond (t); | |
6187 if (t == error_mark_node) | |
6188 remove = true; | |
6189 else if (!processing_template_decl) | |
6190 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
6191 OMP_CLAUSE_IF_EXPR (c) = t; | |
6192 break; | |
6193 | |
6194 case OMP_CLAUSE_FINAL: | |
6195 t = OMP_CLAUSE_FINAL_EXPR (c); | |
6196 t = maybe_convert_cond (t); | |
6197 if (t == error_mark_node) | |
6198 remove = true; | |
6199 else if (!processing_template_decl) | |
6200 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
6201 OMP_CLAUSE_FINAL_EXPR (c) = t; | |
6202 break; | |
6203 | |
6204 case OMP_CLAUSE_GANG: | |
6205 /* Operand 1 is the gang static: argument. */ | |
6206 t = OMP_CLAUSE_OPERAND (c, 1); | |
6207 if (t != NULL_TREE) | |
6208 { | |
6209 if (t == error_mark_node) | |
6210 remove = true; | |
6211 else if (!type_dependent_expression_p (t) | |
6212 && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
6213 { | |
6214 error ("%<gang%> static expression must be integral"); | |
6215 remove = true; | |
6216 } | |
6217 else | |
6218 { | |
6219 t = mark_rvalue_use (t); | |
6220 if (!processing_template_decl) | |
6221 { | |
6222 t = maybe_constant_value (t); | |
6223 if (TREE_CODE (t) == INTEGER_CST | |
6224 && tree_int_cst_sgn (t) != 1 | |
6225 && t != integer_minus_one_node) | |
6226 { | |
6227 warning_at (OMP_CLAUSE_LOCATION (c), 0, | |
6228 "%<gang%> static value must be " | |
6229 "positive"); | |
6230 t = integer_one_node; | |
6231 } | |
6232 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
6233 } | |
6234 } | |
6235 OMP_CLAUSE_OPERAND (c, 1) = t; | |
6236 } | |
6237 /* Check operand 0, the num argument. */ | |
6238 /* FALLTHRU */ | |
6239 | |
6240 case OMP_CLAUSE_WORKER: | |
6241 case OMP_CLAUSE_VECTOR: | |
6242 if (OMP_CLAUSE_OPERAND (c, 0) == NULL_TREE) | |
6243 break; | |
6244 /* FALLTHRU */ | |
6245 | |
6246 case OMP_CLAUSE_NUM_TASKS: | |
6247 case OMP_CLAUSE_NUM_TEAMS: | |
6248 case OMP_CLAUSE_NUM_THREADS: | |
6249 case OMP_CLAUSE_NUM_GANGS: | |
6250 case OMP_CLAUSE_NUM_WORKERS: | |
6251 case OMP_CLAUSE_VECTOR_LENGTH: | |
6252 t = OMP_CLAUSE_OPERAND (c, 0); | |
6253 if (t == error_mark_node) | |
6254 remove = true; | |
6255 else if (!type_dependent_expression_p (t) | |
6256 && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
6257 { | |
6258 switch (OMP_CLAUSE_CODE (c)) | |
6259 { | |
6260 case OMP_CLAUSE_GANG: | |
6261 error_at (OMP_CLAUSE_LOCATION (c), | |
6262 "%<gang%> num expression must be integral"); break; | |
6263 case OMP_CLAUSE_VECTOR: | |
6264 error_at (OMP_CLAUSE_LOCATION (c), | |
6265 "%<vector%> length expression must be integral"); | |
6266 break; | |
6267 case OMP_CLAUSE_WORKER: | |
6268 error_at (OMP_CLAUSE_LOCATION (c), | |
6269 "%<worker%> num expression must be integral"); | |
6270 break; | |
6271 default: | |
6272 error_at (OMP_CLAUSE_LOCATION (c), | |
6273 "%qs expression must be integral", | |
6274 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6275 } | |
6276 remove = true; | |
6277 } | |
6278 else | |
6279 { | |
6280 t = mark_rvalue_use (t); | |
6281 if (!processing_template_decl) | |
6282 { | |
6283 t = maybe_constant_value (t); | |
6284 if (TREE_CODE (t) == INTEGER_CST | |
6285 && tree_int_cst_sgn (t) != 1) | |
6286 { | |
6287 switch (OMP_CLAUSE_CODE (c)) | |
6288 { | |
6289 case OMP_CLAUSE_GANG: | |
6290 warning_at (OMP_CLAUSE_LOCATION (c), 0, | |
6291 "%<gang%> num value must be positive"); | |
6292 break; | |
6293 case OMP_CLAUSE_VECTOR: | |
6294 warning_at (OMP_CLAUSE_LOCATION (c), 0, | |
6295 "%<vector%> length value must be " | |
6296 "positive"); | |
6297 break; | |
6298 case OMP_CLAUSE_WORKER: | |
6299 warning_at (OMP_CLAUSE_LOCATION (c), 0, | |
6300 "%<worker%> num value must be " | |
6301 "positive"); | |
6302 break; | |
6303 default: | |
6304 warning_at (OMP_CLAUSE_LOCATION (c), 0, | |
6305 "%qs value must be positive", | |
6306 omp_clause_code_name | |
6307 [OMP_CLAUSE_CODE (c)]); | |
6308 } | |
6309 t = integer_one_node; | |
6310 } | |
6311 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
6312 } | |
6313 OMP_CLAUSE_OPERAND (c, 0) = t; | |
6314 } | |
6315 break; | |
6316 | |
6317 case OMP_CLAUSE_SCHEDULE: | |
6318 if (OMP_CLAUSE_SCHEDULE_KIND (c) & OMP_CLAUSE_SCHEDULE_NONMONOTONIC) | |
6319 { | |
6320 const char *p = NULL; | |
6321 switch (OMP_CLAUSE_SCHEDULE_KIND (c) & OMP_CLAUSE_SCHEDULE_MASK) | |
6322 { | |
6323 case OMP_CLAUSE_SCHEDULE_STATIC: p = "static"; break; | |
6324 case OMP_CLAUSE_SCHEDULE_DYNAMIC: break; | |
6325 case OMP_CLAUSE_SCHEDULE_GUIDED: break; | |
6326 case OMP_CLAUSE_SCHEDULE_AUTO: p = "auto"; break; | |
6327 case OMP_CLAUSE_SCHEDULE_RUNTIME: p = "runtime"; break; | |
6328 default: gcc_unreachable (); | |
6329 } | |
6330 if (p) | |
6331 { | |
6332 error_at (OMP_CLAUSE_LOCATION (c), | |
6333 "%<nonmonotonic%> modifier specified for %qs " | |
6334 "schedule kind", p); | |
6335 OMP_CLAUSE_SCHEDULE_KIND (c) | |
6336 = (enum omp_clause_schedule_kind) | |
6337 (OMP_CLAUSE_SCHEDULE_KIND (c) | |
6338 & ~OMP_CLAUSE_SCHEDULE_NONMONOTONIC); | |
6339 } | |
6340 } | |
6341 | |
6342 t = OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (c); | |
6343 if (t == NULL) | |
6344 ; | |
6345 else if (t == error_mark_node) | |
6346 remove = true; | |
6347 else if (!type_dependent_expression_p (t) | |
6348 && (OMP_CLAUSE_SCHEDULE_KIND (c) | |
6349 != OMP_CLAUSE_SCHEDULE_CILKFOR) | |
6350 && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
6351 { | |
6352 error ("schedule chunk size expression must be integral"); | |
6353 remove = true; | |
6354 } | |
6355 else | |
6356 { | |
6357 t = mark_rvalue_use (t); | |
6358 if (!processing_template_decl) | |
6359 { | |
6360 if (OMP_CLAUSE_SCHEDULE_KIND (c) | |
6361 == OMP_CLAUSE_SCHEDULE_CILKFOR) | |
6362 { | |
6363 t = convert_to_integer (long_integer_type_node, t); | |
6364 if (t == error_mark_node) | |
6365 { | |
6366 remove = true; | |
6367 break; | |
6368 } | |
6369 } | |
6370 else | |
6371 { | |
6372 t = maybe_constant_value (t); | |
6373 if (TREE_CODE (t) == INTEGER_CST | |
6374 && tree_int_cst_sgn (t) != 1) | |
6375 { | |
6376 warning_at (OMP_CLAUSE_LOCATION (c), 0, | |
6377 "chunk size value must be positive"); | |
6378 t = integer_one_node; | |
6379 } | |
6380 } | |
6381 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
6382 } | |
6383 OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (c) = t; | |
6384 } | |
6385 break; | |
6386 | |
6387 case OMP_CLAUSE_SIMDLEN: | |
6388 case OMP_CLAUSE_SAFELEN: | |
6389 t = OMP_CLAUSE_OPERAND (c, 0); | |
6390 if (t == error_mark_node) | |
6391 remove = true; | |
6392 else if (!type_dependent_expression_p (t) | |
6393 && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
6394 { | |
6395 error ("%qs length expression must be integral", | |
6396 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6397 remove = true; | |
6398 } | |
6399 else | |
6400 { | |
6401 t = mark_rvalue_use (t); | |
6402 if (!processing_template_decl) | |
6403 { | |
6404 t = maybe_constant_value (t); | |
6405 if (TREE_CODE (t) != INTEGER_CST | |
6406 || tree_int_cst_sgn (t) != 1) | |
6407 { | |
6408 error ("%qs length expression must be positive constant" | |
6409 " integer expression", | |
6410 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6411 remove = true; | |
6412 } | |
6413 } | |
6414 OMP_CLAUSE_OPERAND (c, 0) = t; | |
6415 if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_SAFELEN) | |
6416 safelen = c; | |
6417 } | |
6418 break; | |
6419 | |
6420 case OMP_CLAUSE_ASYNC: | |
6421 t = OMP_CLAUSE_ASYNC_EXPR (c); | |
6422 if (t == error_mark_node) | |
6423 remove = true; | |
6424 else if (!type_dependent_expression_p (t) | |
6425 && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
6426 { | |
6427 error ("%<async%> expression must be integral"); | |
6428 remove = true; | |
6429 } | |
6430 else | |
6431 { | |
6432 t = mark_rvalue_use (t); | |
6433 if (!processing_template_decl) | |
6434 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
6435 OMP_CLAUSE_ASYNC_EXPR (c) = t; | |
6436 } | |
6437 break; | |
6438 | |
6439 case OMP_CLAUSE_WAIT: | |
6440 t = OMP_CLAUSE_WAIT_EXPR (c); | |
6441 if (t == error_mark_node) | |
6442 remove = true; | |
6443 else if (!processing_template_decl) | |
6444 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
6445 OMP_CLAUSE_WAIT_EXPR (c) = t; | |
6446 break; | |
6447 | |
6448 case OMP_CLAUSE_THREAD_LIMIT: | |
6449 t = OMP_CLAUSE_THREAD_LIMIT_EXPR (c); | |
6450 if (t == error_mark_node) | |
6451 remove = true; | |
6452 else if (!type_dependent_expression_p (t) | |
6453 && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
6454 { | |
6455 error ("%<thread_limit%> expression must be integral"); | |
6456 remove = true; | |
6457 } | |
6458 else | |
6459 { | |
6460 t = mark_rvalue_use (t); | |
6461 if (!processing_template_decl) | |
6462 { | |
6463 t = maybe_constant_value (t); | |
6464 if (TREE_CODE (t) == INTEGER_CST | |
6465 && tree_int_cst_sgn (t) != 1) | |
6466 { | |
6467 warning_at (OMP_CLAUSE_LOCATION (c), 0, | |
6468 "%<thread_limit%> value must be positive"); | |
6469 t = integer_one_node; | |
6470 } | |
6471 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
6472 } | |
6473 OMP_CLAUSE_THREAD_LIMIT_EXPR (c) = t; | |
6474 } | |
6475 break; | |
6476 | |
6477 case OMP_CLAUSE_DEVICE: | |
6478 t = OMP_CLAUSE_DEVICE_ID (c); | |
6479 if (t == error_mark_node) | |
6480 remove = true; | |
6481 else if (!type_dependent_expression_p (t) | |
6482 && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
6483 { | |
6484 error ("%<device%> id must be integral"); | |
6485 remove = true; | |
6486 } | |
6487 else | |
6488 { | |
6489 t = mark_rvalue_use (t); | |
6490 if (!processing_template_decl) | |
6491 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
6492 OMP_CLAUSE_DEVICE_ID (c) = t; | |
6493 } | |
6494 break; | |
6495 | |
6496 case OMP_CLAUSE_DIST_SCHEDULE: | |
6497 t = OMP_CLAUSE_DIST_SCHEDULE_CHUNK_EXPR (c); | |
6498 if (t == NULL) | |
6499 ; | |
6500 else if (t == error_mark_node) | |
6501 remove = true; | |
6502 else if (!type_dependent_expression_p (t) | |
6503 && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
6504 { | |
6505 error ("%<dist_schedule%> chunk size expression must be " | |
6506 "integral"); | |
6507 remove = true; | |
6508 } | |
6509 else | |
6510 { | |
6511 t = mark_rvalue_use (t); | |
6512 if (!processing_template_decl) | |
6513 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
6514 OMP_CLAUSE_DIST_SCHEDULE_CHUNK_EXPR (c) = t; | |
6515 } | |
6516 break; | |
6517 | |
6518 case OMP_CLAUSE_ALIGNED: | |
6519 t = OMP_CLAUSE_DECL (c); | |
6520 if (t == current_class_ptr && ort != C_ORT_OMP_DECLARE_SIMD) | |
6521 { | |
6522 error ("%<this%> allowed in OpenMP only in %<declare simd%>" | |
6523 " clauses"); | |
6524 remove = true; | |
6525 break; | |
6526 } | |
6527 if (!VAR_P (t) && TREE_CODE (t) != PARM_DECL) | |
6528 { | |
6529 if (processing_template_decl && TREE_CODE (t) != OVERLOAD) | |
6530 break; | |
6531 if (DECL_P (t)) | |
6532 error ("%qD is not a variable in %<aligned%> clause", t); | |
6533 else | |
6534 error ("%qE is not a variable in %<aligned%> clause", t); | |
6535 remove = true; | |
6536 } | |
6537 else if (!type_dependent_expression_p (t) | |
6538 && TREE_CODE (TREE_TYPE (t)) != POINTER_TYPE | |
6539 && TREE_CODE (TREE_TYPE (t)) != ARRAY_TYPE | |
6540 && (TREE_CODE (TREE_TYPE (t)) != REFERENCE_TYPE | |
6541 || (!POINTER_TYPE_P (TREE_TYPE (TREE_TYPE (t))) | |
6542 && (TREE_CODE (TREE_TYPE (TREE_TYPE (t))) | |
6543 != ARRAY_TYPE)))) | |
6544 { | |
6545 error_at (OMP_CLAUSE_LOCATION (c), | |
6546 "%qE in %<aligned%> clause is neither a pointer nor " | |
6547 "an array nor a reference to pointer or array", t); | |
6548 remove = true; | |
6549 } | |
6550 else if (bitmap_bit_p (&aligned_head, DECL_UID (t))) | |
6551 { | |
6552 error ("%qD appears more than once in %<aligned%> clauses", t); | |
6553 remove = true; | |
6554 } | |
6555 else | |
6556 bitmap_set_bit (&aligned_head, DECL_UID (t)); | |
6557 t = OMP_CLAUSE_ALIGNED_ALIGNMENT (c); | |
6558 if (t == error_mark_node) | |
6559 remove = true; | |
6560 else if (t == NULL_TREE) | |
6561 break; | |
6562 else if (!type_dependent_expression_p (t) | |
6563 && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
6564 { | |
6565 error ("%<aligned%> clause alignment expression must " | |
6566 "be integral"); | |
6567 remove = true; | |
6568 } | |
6569 else | |
6570 { | |
6571 t = mark_rvalue_use (t); | |
6572 if (!processing_template_decl) | |
6573 { | |
6574 t = maybe_constant_value (t); | |
6575 if (TREE_CODE (t) != INTEGER_CST | |
6576 || tree_int_cst_sgn (t) != 1) | |
6577 { | |
6578 error ("%<aligned%> clause alignment expression must be " | |
6579 "positive constant integer expression"); | |
6580 remove = true; | |
6581 } | |
6582 } | |
6583 OMP_CLAUSE_ALIGNED_ALIGNMENT (c) = t; | |
6584 } | |
6585 break; | |
6586 | |
6587 case OMP_CLAUSE_DEPEND: | |
6588 t = OMP_CLAUSE_DECL (c); | |
6589 if (t == NULL_TREE) | |
6590 { | |
6591 gcc_assert (OMP_CLAUSE_DEPEND_KIND (c) | |
6592 == OMP_CLAUSE_DEPEND_SOURCE); | |
6593 break; | |
6594 } | |
6595 if (OMP_CLAUSE_DEPEND_KIND (c) == OMP_CLAUSE_DEPEND_SINK) | |
6596 { | |
6597 if (cp_finish_omp_clause_depend_sink (c)) | |
6598 remove = true; | |
6599 break; | |
6600 } | |
6601 if (TREE_CODE (t) == TREE_LIST) | |
6602 { | |
6603 if (handle_omp_array_sections (c, ort)) | |
6604 remove = true; | |
6605 break; | |
6606 } | |
6607 if (t == error_mark_node) | |
6608 remove = true; | |
6609 else if (!VAR_P (t) && TREE_CODE (t) != PARM_DECL) | |
6610 { | |
6611 if (processing_template_decl && TREE_CODE (t) != OVERLOAD) | |
6612 break; | |
6613 if (DECL_P (t)) | |
6614 error ("%qD is not a variable in %<depend%> clause", t); | |
6615 else | |
6616 error ("%qE is not a variable in %<depend%> clause", t); | |
6617 remove = true; | |
6618 } | |
6619 else if (t == current_class_ptr) | |
6620 { | |
6621 error ("%<this%> allowed in OpenMP only in %<declare simd%>" | |
6622 " clauses"); | |
6623 remove = true; | |
6624 } | |
6625 else if (!processing_template_decl | |
6626 && !cxx_mark_addressable (t)) | |
6627 remove = true; | |
6628 break; | |
6629 | |
6630 case OMP_CLAUSE_MAP: | |
6631 case OMP_CLAUSE_TO: | |
6632 case OMP_CLAUSE_FROM: | |
6633 case OMP_CLAUSE__CACHE_: | |
6634 t = OMP_CLAUSE_DECL (c); | |
6635 if (TREE_CODE (t) == TREE_LIST) | |
6636 { | |
6637 if (handle_omp_array_sections (c, ort)) | |
6638 remove = true; | |
6639 else | |
6640 { | |
6641 t = OMP_CLAUSE_DECL (c); | |
6642 if (TREE_CODE (t) != TREE_LIST | |
6643 && !type_dependent_expression_p (t) | |
6644 && !cp_omp_mappable_type (TREE_TYPE (t))) | |
6645 { | |
6646 error_at (OMP_CLAUSE_LOCATION (c), | |
6647 "array section does not have mappable type " | |
6648 "in %qs clause", | |
6649 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6650 remove = true; | |
6651 } | |
6652 while (TREE_CODE (t) == ARRAY_REF) | |
6653 t = TREE_OPERAND (t, 0); | |
6654 if (TREE_CODE (t) == COMPONENT_REF | |
6655 && TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE) | |
6656 { | |
6657 while (TREE_CODE (t) == COMPONENT_REF) | |
6658 t = TREE_OPERAND (t, 0); | |
6659 if (REFERENCE_REF_P (t)) | |
6660 t = TREE_OPERAND (t, 0); | |
6661 if (bitmap_bit_p (&map_field_head, DECL_UID (t))) | |
6662 break; | |
6663 if (bitmap_bit_p (&map_head, DECL_UID (t))) | |
6664 { | |
6665 if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_MAP) | |
6666 error ("%qD appears more than once in motion" | |
6667 " clauses", t); | |
6668 else if (ort == C_ORT_ACC) | |
6669 error ("%qD appears more than once in data" | |
6670 " clauses", t); | |
6671 else | |
6672 error ("%qD appears more than once in map" | |
6673 " clauses", t); | |
6674 remove = true; | |
6675 } | |
6676 else | |
6677 { | |
6678 bitmap_set_bit (&map_head, DECL_UID (t)); | |
6679 bitmap_set_bit (&map_field_head, DECL_UID (t)); | |
6680 } | |
6681 } | |
6682 } | |
6683 break; | |
6684 } | |
6685 if (t == error_mark_node) | |
6686 { | |
6687 remove = true; | |
6688 break; | |
6689 } | |
6690 if (REFERENCE_REF_P (t) | |
6691 && TREE_CODE (TREE_OPERAND (t, 0)) == COMPONENT_REF) | |
6692 { | |
6693 t = TREE_OPERAND (t, 0); | |
6694 OMP_CLAUSE_DECL (c) = t; | |
6695 } | |
6696 if (TREE_CODE (t) == COMPONENT_REF | |
6697 && (ort & C_ORT_OMP_DECLARE_SIMD) == C_ORT_OMP | |
6698 && OMP_CLAUSE_CODE (c) != OMP_CLAUSE__CACHE_) | |
6699 { | |
6700 if (type_dependent_expression_p (t)) | |
6701 break; | |
6702 if (TREE_CODE (TREE_OPERAND (t, 1)) == FIELD_DECL | |
6703 && DECL_BIT_FIELD (TREE_OPERAND (t, 1))) | |
6704 { | |
6705 error_at (OMP_CLAUSE_LOCATION (c), | |
6706 "bit-field %qE in %qs clause", | |
6707 t, omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6708 remove = true; | |
6709 } | |
6710 else if (!cp_omp_mappable_type (TREE_TYPE (t))) | |
6711 { | |
6712 error_at (OMP_CLAUSE_LOCATION (c), | |
6713 "%qE does not have a mappable type in %qs clause", | |
6714 t, omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6715 remove = true; | |
6716 } | |
6717 while (TREE_CODE (t) == COMPONENT_REF) | |
6718 { | |
6719 if (TREE_TYPE (TREE_OPERAND (t, 0)) | |
6720 && (TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) | |
6721 == UNION_TYPE)) | |
6722 { | |
6723 error_at (OMP_CLAUSE_LOCATION (c), | |
6724 "%qE is a member of a union", t); | |
6725 remove = true; | |
6726 break; | |
6727 } | |
6728 t = TREE_OPERAND (t, 0); | |
6729 } | |
6730 if (remove) | |
6731 break; | |
6732 if (REFERENCE_REF_P (t)) | |
6733 t = TREE_OPERAND (t, 0); | |
6734 if (VAR_P (t) || TREE_CODE (t) == PARM_DECL) | |
6735 { | |
6736 if (bitmap_bit_p (&map_field_head, DECL_UID (t))) | |
6737 goto handle_map_references; | |
6738 } | |
6739 } | |
6740 if (!VAR_P (t) && TREE_CODE (t) != PARM_DECL) | |
6741 { | |
6742 if (processing_template_decl && TREE_CODE (t) != OVERLOAD) | |
6743 break; | |
6744 if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP | |
6745 && (OMP_CLAUSE_MAP_KIND (c) == GOMP_MAP_POINTER | |
6746 || OMP_CLAUSE_MAP_KIND (c) == GOMP_MAP_ALWAYS_POINTER)) | |
6747 break; | |
6748 if (DECL_P (t)) | |
6749 error ("%qD is not a variable in %qs clause", t, | |
6750 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6751 else | |
6752 error ("%qE is not a variable in %qs clause", t, | |
6753 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6754 remove = true; | |
6755 } | |
6756 else if (VAR_P (t) && CP_DECL_THREAD_LOCAL_P (t)) | |
6757 { | |
6758 error ("%qD is threadprivate variable in %qs clause", t, | |
6759 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6760 remove = true; | |
6761 } | |
6762 else if (ort != C_ORT_ACC && t == current_class_ptr) | |
6763 { | |
6764 error ("%<this%> allowed in OpenMP only in %<declare simd%>" | |
6765 " clauses"); | |
6766 remove = true; | |
6767 break; | |
6768 } | |
6769 else if (!processing_template_decl | |
6770 && TREE_CODE (TREE_TYPE (t)) != REFERENCE_TYPE | |
6771 && (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_MAP | |
6772 || (OMP_CLAUSE_MAP_KIND (c) | |
6773 != GOMP_MAP_FIRSTPRIVATE_POINTER)) | |
6774 && !cxx_mark_addressable (t)) | |
6775 remove = true; | |
6776 else if (!(OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP | |
6777 && (OMP_CLAUSE_MAP_KIND (c) == GOMP_MAP_POINTER | |
6778 || (OMP_CLAUSE_MAP_KIND (c) | |
6779 == GOMP_MAP_FIRSTPRIVATE_POINTER))) | |
6780 && t == OMP_CLAUSE_DECL (c) | |
6781 && !type_dependent_expression_p (t) | |
6782 && !cp_omp_mappable_type ((TREE_CODE (TREE_TYPE (t)) | |
6783 == REFERENCE_TYPE) | |
6784 ? TREE_TYPE (TREE_TYPE (t)) | |
6785 : TREE_TYPE (t))) | |
6786 { | |
6787 error_at (OMP_CLAUSE_LOCATION (c), | |
6788 "%qD does not have a mappable type in %qs clause", t, | |
6789 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6790 remove = true; | |
6791 } | |
6792 else if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP | |
6793 && OMP_CLAUSE_MAP_KIND (c) == GOMP_MAP_FORCE_DEVICEPTR | |
6794 && !type_dependent_expression_p (t) | |
6795 && !POINTER_TYPE_P (TREE_TYPE (t))) | |
6796 { | |
6797 error ("%qD is not a pointer variable", t); | |
6798 remove = true; | |
6799 } | |
6800 else if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP | |
6801 && OMP_CLAUSE_MAP_KIND (c) == GOMP_MAP_FIRSTPRIVATE_POINTER) | |
6802 { | |
6803 if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
6804 || bitmap_bit_p (&firstprivate_head, DECL_UID (t))) | |
6805 { | |
6806 error ("%qD appears more than once in data clauses", t); | |
6807 remove = true; | |
6808 } | |
6809 else if (bitmap_bit_p (&map_head, DECL_UID (t))) | |
6810 { | |
6811 if (ort == C_ORT_ACC) | |
6812 error ("%qD appears more than once in data clauses", t); | |
6813 else | |
6814 error ("%qD appears both in data and map clauses", t); | |
6815 remove = true; | |
6816 } | |
6817 else | |
6818 bitmap_set_bit (&generic_head, DECL_UID (t)); | |
6819 } | |
6820 else if (bitmap_bit_p (&map_head, DECL_UID (t))) | |
6821 { | |
6822 if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_MAP) | |
6823 error ("%qD appears more than once in motion clauses", t); | |
6824 if (ort == C_ORT_ACC) | |
6825 error ("%qD appears more than once in data clauses", t); | |
6826 else | |
6827 error ("%qD appears more than once in map clauses", t); | |
6828 remove = true; | |
6829 } | |
6830 else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
6831 || bitmap_bit_p (&firstprivate_head, DECL_UID (t))) | |
6832 { | |
6833 if (ort == C_ORT_ACC) | |
6834 error ("%qD appears more than once in data clauses", t); | |
6835 else | |
6836 error ("%qD appears both in data and map clauses", t); | |
6837 remove = true; | |
6838 } | |
6839 else | |
6840 { | |
6841 bitmap_set_bit (&map_head, DECL_UID (t)); | |
6842 if (t != OMP_CLAUSE_DECL (c) | |
6843 && TREE_CODE (OMP_CLAUSE_DECL (c)) == COMPONENT_REF) | |
6844 bitmap_set_bit (&map_field_head, DECL_UID (t)); | |
6845 } | |
6846 handle_map_references: | |
6847 if (!remove | |
6848 && !processing_template_decl | |
6849 && (ort & C_ORT_OMP_DECLARE_SIMD) == C_ORT_OMP | |
6850 && TREE_CODE (TREE_TYPE (OMP_CLAUSE_DECL (c))) == REFERENCE_TYPE) | |
6851 { | |
6852 t = OMP_CLAUSE_DECL (c); | |
6853 if (OMP_CLAUSE_CODE (c) != OMP_CLAUSE_MAP) | |
6854 { | |
6855 OMP_CLAUSE_DECL (c) = build_simple_mem_ref (t); | |
6856 if (OMP_CLAUSE_SIZE (c) == NULL_TREE) | |
6857 OMP_CLAUSE_SIZE (c) | |
6858 = TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (t))); | |
6859 } | |
6860 else if (OMP_CLAUSE_MAP_KIND (c) | |
6861 != GOMP_MAP_FIRSTPRIVATE_POINTER | |
6862 && (OMP_CLAUSE_MAP_KIND (c) | |
6863 != GOMP_MAP_FIRSTPRIVATE_REFERENCE) | |
6864 && (OMP_CLAUSE_MAP_KIND (c) | |
6865 != GOMP_MAP_ALWAYS_POINTER)) | |
6866 { | |
6867 tree c2 = build_omp_clause (OMP_CLAUSE_LOCATION (c), | |
6868 OMP_CLAUSE_MAP); | |
6869 if (TREE_CODE (t) == COMPONENT_REF) | |
6870 OMP_CLAUSE_SET_MAP_KIND (c2, GOMP_MAP_ALWAYS_POINTER); | |
6871 else | |
6872 OMP_CLAUSE_SET_MAP_KIND (c2, | |
6873 GOMP_MAP_FIRSTPRIVATE_REFERENCE); | |
6874 OMP_CLAUSE_DECL (c2) = t; | |
6875 OMP_CLAUSE_SIZE (c2) = size_zero_node; | |
6876 OMP_CLAUSE_CHAIN (c2) = OMP_CLAUSE_CHAIN (c); | |
6877 OMP_CLAUSE_CHAIN (c) = c2; | |
6878 OMP_CLAUSE_DECL (c) = build_simple_mem_ref (t); | |
6879 if (OMP_CLAUSE_SIZE (c) == NULL_TREE) | |
6880 OMP_CLAUSE_SIZE (c) | |
6881 = TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (t))); | |
6882 c = c2; | |
6883 } | |
6884 } | |
6885 break; | |
6886 | |
6887 case OMP_CLAUSE_TO_DECLARE: | |
6888 case OMP_CLAUSE_LINK: | |
6889 t = OMP_CLAUSE_DECL (c); | |
6890 if (TREE_CODE (t) == FUNCTION_DECL | |
6891 && OMP_CLAUSE_CODE (c) == OMP_CLAUSE_TO_DECLARE) | |
6892 ; | |
6893 else if (!VAR_P (t)) | |
6894 { | |
6895 if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_TO_DECLARE) | |
6896 { | |
6897 if (TREE_CODE (t) == TEMPLATE_ID_EXPR) | |
6898 error_at (OMP_CLAUSE_LOCATION (c), | |
6899 "template %qE in clause %qs", t, | |
6900 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6901 else if (really_overloaded_fn (t)) | |
6902 error_at (OMP_CLAUSE_LOCATION (c), | |
6903 "overloaded function name %qE in clause %qs", t, | |
6904 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6905 else | |
6906 error_at (OMP_CLAUSE_LOCATION (c), | |
6907 "%qE is neither a variable nor a function name " | |
6908 "in clause %qs", t, | |
6909 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6910 } | |
6911 else | |
6912 error_at (OMP_CLAUSE_LOCATION (c), | |
6913 "%qE is not a variable in clause %qs", t, | |
6914 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6915 remove = true; | |
6916 } | |
6917 else if (DECL_THREAD_LOCAL_P (t)) | |
6918 { | |
6919 error_at (OMP_CLAUSE_LOCATION (c), | |
6920 "%qD is threadprivate variable in %qs clause", t, | |
6921 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6922 remove = true; | |
6923 } | |
6924 else if (!cp_omp_mappable_type (TREE_TYPE (t))) | |
6925 { | |
6926 error_at (OMP_CLAUSE_LOCATION (c), | |
6927 "%qD does not have a mappable type in %qs clause", t, | |
6928 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
6929 remove = true; | |
6930 } | |
6931 if (remove) | |
6932 break; | |
6933 if (bitmap_bit_p (&generic_head, DECL_UID (t))) | |
6934 { | |
6935 error_at (OMP_CLAUSE_LOCATION (c), | |
6936 "%qE appears more than once on the same " | |
6937 "%<declare target%> directive", t); | |
6938 remove = true; | |
6939 } | |
6940 else | |
6941 bitmap_set_bit (&generic_head, DECL_UID (t)); | |
6942 break; | |
6943 | |
6944 case OMP_CLAUSE_UNIFORM: | |
6945 t = OMP_CLAUSE_DECL (c); | |
6946 if (TREE_CODE (t) != PARM_DECL) | |
6947 { | |
6948 if (processing_template_decl) | |
6949 break; | |
6950 if (DECL_P (t)) | |
6951 error ("%qD is not an argument in %<uniform%> clause", t); | |
6952 else | |
6953 error ("%qE is not an argument in %<uniform%> clause", t); | |
6954 remove = true; | |
6955 break; | |
6956 } | |
6957 /* map_head bitmap is used as uniform_head if declare_simd. */ | |
6958 bitmap_set_bit (&map_head, DECL_UID (t)); | |
6959 goto check_dup_generic; | |
6960 | |
6961 case OMP_CLAUSE_GRAINSIZE: | |
6962 t = OMP_CLAUSE_GRAINSIZE_EXPR (c); | |
6963 if (t == error_mark_node) | |
6964 remove = true; | |
6965 else if (!type_dependent_expression_p (t) | |
6966 && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
6967 { | |
6968 error ("%<grainsize%> expression must be integral"); | |
6969 remove = true; | |
6970 } | |
6971 else | |
6972 { | |
6973 t = mark_rvalue_use (t); | |
6974 if (!processing_template_decl) | |
6975 { | |
6976 t = maybe_constant_value (t); | |
6977 if (TREE_CODE (t) == INTEGER_CST | |
6978 && tree_int_cst_sgn (t) != 1) | |
6979 { | |
6980 warning_at (OMP_CLAUSE_LOCATION (c), 0, | |
6981 "%<grainsize%> value must be positive"); | |
6982 t = integer_one_node; | |
6983 } | |
6984 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
6985 } | |
6986 OMP_CLAUSE_GRAINSIZE_EXPR (c) = t; | |
6987 } | |
6988 break; | |
6989 | |
6990 case OMP_CLAUSE_PRIORITY: | |
6991 t = OMP_CLAUSE_PRIORITY_EXPR (c); | |
6992 if (t == error_mark_node) | |
6993 remove = true; | |
6994 else if (!type_dependent_expression_p (t) | |
6995 && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
6996 { | |
6997 error ("%<priority%> expression must be integral"); | |
6998 remove = true; | |
6999 } | |
7000 else | |
7001 { | |
7002 t = mark_rvalue_use (t); | |
7003 if (!processing_template_decl) | |
7004 { | |
7005 t = maybe_constant_value (t); | |
7006 if (TREE_CODE (t) == INTEGER_CST | |
7007 && tree_int_cst_sgn (t) == -1) | |
7008 { | |
7009 warning_at (OMP_CLAUSE_LOCATION (c), 0, | |
7010 "%<priority%> value must be non-negative"); | |
7011 t = integer_one_node; | |
7012 } | |
7013 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
7014 } | |
7015 OMP_CLAUSE_PRIORITY_EXPR (c) = t; | |
7016 } | |
7017 break; | |
7018 | |
7019 case OMP_CLAUSE_HINT: | |
7020 t = OMP_CLAUSE_HINT_EXPR (c); | |
7021 if (t == error_mark_node) | |
7022 remove = true; | |
7023 else if (!type_dependent_expression_p (t) | |
7024 && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
7025 { | |
7026 error ("%<num_tasks%> expression must be integral"); | |
7027 remove = true; | |
7028 } | |
7029 else | |
7030 { | |
7031 t = mark_rvalue_use (t); | |
7032 if (!processing_template_decl) | |
7033 { | |
7034 t = maybe_constant_value (t); | |
7035 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
7036 } | |
7037 OMP_CLAUSE_HINT_EXPR (c) = t; | |
7038 } | |
7039 break; | |
7040 | |
7041 case OMP_CLAUSE_IS_DEVICE_PTR: | |
7042 case OMP_CLAUSE_USE_DEVICE_PTR: | |
7043 field_ok = (ort & C_ORT_OMP_DECLARE_SIMD) == C_ORT_OMP; | |
7044 t = OMP_CLAUSE_DECL (c); | |
7045 if (!type_dependent_expression_p (t)) | |
7046 { | |
7047 tree type = TREE_TYPE (t); | |
7048 if (TREE_CODE (type) != POINTER_TYPE | |
7049 && TREE_CODE (type) != ARRAY_TYPE | |
7050 && (TREE_CODE (type) != REFERENCE_TYPE | |
7051 || (TREE_CODE (TREE_TYPE (type)) != POINTER_TYPE | |
7052 && TREE_CODE (TREE_TYPE (type)) != ARRAY_TYPE))) | |
7053 { | |
7054 error_at (OMP_CLAUSE_LOCATION (c), | |
7055 "%qs variable is neither a pointer, nor an array " | |
7056 "nor reference to pointer or array", | |
7057 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
7058 remove = true; | |
7059 } | |
7060 } | |
7061 goto check_dup_generic; | |
7062 | |
7063 case OMP_CLAUSE_NOWAIT: | |
7064 case OMP_CLAUSE_DEFAULT: | |
7065 case OMP_CLAUSE_UNTIED: | |
7066 case OMP_CLAUSE_COLLAPSE: | |
7067 case OMP_CLAUSE_MERGEABLE: | |
7068 case OMP_CLAUSE_PARALLEL: | |
7069 case OMP_CLAUSE_FOR: | |
7070 case OMP_CLAUSE_SECTIONS: | |
7071 case OMP_CLAUSE_TASKGROUP: | |
7072 case OMP_CLAUSE_PROC_BIND: | |
7073 case OMP_CLAUSE_NOGROUP: | |
7074 case OMP_CLAUSE_THREADS: | |
7075 case OMP_CLAUSE_SIMD: | |
7076 case OMP_CLAUSE_DEFAULTMAP: | |
7077 case OMP_CLAUSE__CILK_FOR_COUNT_: | |
7078 case OMP_CLAUSE_AUTO: | |
7079 case OMP_CLAUSE_INDEPENDENT: | |
7080 case OMP_CLAUSE_SEQ: | |
7081 break; | |
7082 | |
7083 case OMP_CLAUSE_TILE: | |
7084 for (tree list = OMP_CLAUSE_TILE_LIST (c); !remove && list; | |
7085 list = TREE_CHAIN (list)) | |
7086 { | |
7087 t = TREE_VALUE (list); | |
7088 | |
7089 if (t == error_mark_node) | |
7090 remove = true; | |
7091 else if (!type_dependent_expression_p (t) | |
7092 && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
7093 { | |
7094 error_at (OMP_CLAUSE_LOCATION (c), | |
7095 "%<tile%> argument needs integral type"); | |
7096 remove = true; | |
7097 } | |
7098 else | |
7099 { | |
7100 t = mark_rvalue_use (t); | |
7101 if (!processing_template_decl) | |
7102 { | |
7103 /* Zero is used to indicate '*', we permit you | |
7104 to get there via an ICE of value zero. */ | |
7105 t = maybe_constant_value (t); | |
7106 if (!tree_fits_shwi_p (t) | |
7107 || tree_to_shwi (t) < 0) | |
7108 { | |
7109 error_at (OMP_CLAUSE_LOCATION (c), | |
7110 "%<tile%> argument needs positive " | |
7111 "integral constant"); | |
7112 remove = true; | |
7113 } | |
7114 t = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
7115 } | |
7116 } | |
7117 | |
7118 /* Update list item. */ | |
7119 TREE_VALUE (list) = t; | |
7120 } | |
7121 break; | |
7122 | |
7123 case OMP_CLAUSE_ORDERED: | |
7124 ordered_seen = true; | |
7125 break; | |
7126 | |
7127 case OMP_CLAUSE_INBRANCH: | |
7128 case OMP_CLAUSE_NOTINBRANCH: | |
7129 if (branch_seen) | |
7130 { | |
7131 error ("%<inbranch%> clause is incompatible with " | |
7132 "%<notinbranch%>"); | |
7133 remove = true; | |
7134 } | |
7135 branch_seen = true; | |
7136 break; | |
7137 | |
7138 default: | |
7139 gcc_unreachable (); | |
7140 } | |
7141 | |
7142 if (remove) | |
7143 *pc = OMP_CLAUSE_CHAIN (c); | |
7144 else | |
7145 pc = &OMP_CLAUSE_CHAIN (c); | |
7146 } | |
7147 | |
7148 for (pc = &clauses, c = clauses; c ; c = *pc) | |
7149 { | |
7150 enum omp_clause_code c_kind = OMP_CLAUSE_CODE (c); | |
7151 bool remove = false; | |
7152 bool need_complete_type = false; | |
7153 bool need_default_ctor = false; | |
7154 bool need_copy_ctor = false; | |
7155 bool need_copy_assignment = false; | |
7156 bool need_implicitly_determined = false; | |
7157 bool need_dtor = false; | |
7158 tree type, inner_type; | |
7159 | |
7160 switch (c_kind) | |
7161 { | |
7162 case OMP_CLAUSE_SHARED: | |
7163 need_implicitly_determined = true; | |
7164 break; | |
7165 case OMP_CLAUSE_PRIVATE: | |
7166 need_complete_type = true; | |
7167 need_default_ctor = true; | |
7168 need_dtor = true; | |
7169 need_implicitly_determined = true; | |
7170 break; | |
7171 case OMP_CLAUSE_FIRSTPRIVATE: | |
7172 need_complete_type = true; | |
7173 need_copy_ctor = true; | |
7174 need_dtor = true; | |
7175 need_implicitly_determined = true; | |
7176 break; | |
7177 case OMP_CLAUSE_LASTPRIVATE: | |
7178 need_complete_type = true; | |
7179 need_copy_assignment = true; | |
7180 need_implicitly_determined = true; | |
7181 break; | |
7182 case OMP_CLAUSE_REDUCTION: | |
7183 need_implicitly_determined = true; | |
7184 break; | |
7185 case OMP_CLAUSE_LINEAR: | |
7186 if (ort != C_ORT_OMP_DECLARE_SIMD) | |
7187 need_implicitly_determined = true; | |
7188 else if (OMP_CLAUSE_LINEAR_VARIABLE_STRIDE (c) | |
7189 && !bitmap_bit_p (&map_head, | |
7190 DECL_UID (OMP_CLAUSE_LINEAR_STEP (c)))) | |
7191 { | |
7192 error_at (OMP_CLAUSE_LOCATION (c), | |
7193 "%<linear%> clause step is a parameter %qD not " | |
7194 "specified in %<uniform%> clause", | |
7195 OMP_CLAUSE_LINEAR_STEP (c)); | |
7196 *pc = OMP_CLAUSE_CHAIN (c); | |
7197 continue; | |
7198 } | |
7199 break; | |
7200 case OMP_CLAUSE_COPYPRIVATE: | |
7201 need_copy_assignment = true; | |
7202 break; | |
7203 case OMP_CLAUSE_COPYIN: | |
7204 need_copy_assignment = true; | |
7205 break; | |
7206 case OMP_CLAUSE_SIMDLEN: | |
7207 if (safelen | |
7208 && !processing_template_decl | |
7209 && tree_int_cst_lt (OMP_CLAUSE_SAFELEN_EXPR (safelen), | |
7210 OMP_CLAUSE_SIMDLEN_EXPR (c))) | |
7211 { | |
7212 error_at (OMP_CLAUSE_LOCATION (c), | |
7213 "%<simdlen%> clause value is bigger than " | |
7214 "%<safelen%> clause value"); | |
7215 OMP_CLAUSE_SIMDLEN_EXPR (c) | |
7216 = OMP_CLAUSE_SAFELEN_EXPR (safelen); | |
7217 } | |
7218 pc = &OMP_CLAUSE_CHAIN (c); | |
7219 continue; | |
7220 case OMP_CLAUSE_SCHEDULE: | |
7221 if (ordered_seen | |
7222 && (OMP_CLAUSE_SCHEDULE_KIND (c) | |
7223 & OMP_CLAUSE_SCHEDULE_NONMONOTONIC)) | |
7224 { | |
7225 error_at (OMP_CLAUSE_LOCATION (c), | |
7226 "%<nonmonotonic%> schedule modifier specified " | |
7227 "together with %<ordered%> clause"); | |
7228 OMP_CLAUSE_SCHEDULE_KIND (c) | |
7229 = (enum omp_clause_schedule_kind) | |
7230 (OMP_CLAUSE_SCHEDULE_KIND (c) | |
7231 & ~OMP_CLAUSE_SCHEDULE_NONMONOTONIC); | |
7232 } | |
7233 pc = &OMP_CLAUSE_CHAIN (c); | |
7234 continue; | |
7235 case OMP_CLAUSE_NOWAIT: | |
7236 if (copyprivate_seen) | |
7237 { | |
7238 error_at (OMP_CLAUSE_LOCATION (c), | |
7239 "%<nowait%> clause must not be used together " | |
7240 "with %<copyprivate%>"); | |
7241 *pc = OMP_CLAUSE_CHAIN (c); | |
7242 continue; | |
7243 } | |
7244 /* FALLTHRU */ | |
7245 default: | |
7246 pc = &OMP_CLAUSE_CHAIN (c); | |
7247 continue; | |
7248 } | |
7249 | |
7250 t = OMP_CLAUSE_DECL (c); | |
7251 if (processing_template_decl | |
7252 && !VAR_P (t) && TREE_CODE (t) != PARM_DECL) | |
7253 { | |
7254 pc = &OMP_CLAUSE_CHAIN (c); | |
7255 continue; | |
7256 } | |
7257 | |
7258 switch (c_kind) | |
7259 { | |
7260 case OMP_CLAUSE_LASTPRIVATE: | |
7261 if (!bitmap_bit_p (&firstprivate_head, DECL_UID (t))) | |
7262 { | |
7263 need_default_ctor = true; | |
7264 need_dtor = true; | |
7265 } | |
7266 break; | |
7267 | |
7268 case OMP_CLAUSE_REDUCTION: | |
7269 if (finish_omp_reduction_clause (c, &need_default_ctor, | |
7270 &need_dtor)) | |
7271 remove = true; | |
7272 else | |
7273 t = OMP_CLAUSE_DECL (c); | |
7274 break; | |
7275 | |
7276 case OMP_CLAUSE_COPYIN: | |
7277 if (!VAR_P (t) || !CP_DECL_THREAD_LOCAL_P (t)) | |
7278 { | |
7279 error ("%qE must be %<threadprivate%> for %<copyin%>", t); | |
7280 remove = true; | |
7281 } | |
7282 break; | |
7283 | |
7284 default: | |
7285 break; | |
7286 } | |
7287 | |
7288 if (need_complete_type || need_copy_assignment) | |
7289 { | |
7290 t = require_complete_type (t); | |
7291 if (t == error_mark_node) | |
7292 remove = true; | |
7293 else if (TREE_CODE (TREE_TYPE (t)) == REFERENCE_TYPE | |
7294 && !complete_type_or_else (TREE_TYPE (TREE_TYPE (t)), t)) | |
7295 remove = true; | |
7296 } | |
7297 if (need_implicitly_determined) | |
7298 { | |
7299 const char *share_name = NULL; | |
7300 | |
7301 if (VAR_P (t) && CP_DECL_THREAD_LOCAL_P (t)) | |
7302 share_name = "threadprivate"; | |
7303 else switch (cxx_omp_predetermined_sharing (t)) | |
7304 { | |
7305 case OMP_CLAUSE_DEFAULT_UNSPECIFIED: | |
7306 break; | |
7307 case OMP_CLAUSE_DEFAULT_SHARED: | |
7308 /* const vars may be specified in firstprivate clause. */ | |
7309 if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_FIRSTPRIVATE | |
7310 && cxx_omp_const_qual_no_mutable (t)) | |
7311 break; | |
7312 share_name = "shared"; | |
7313 break; | |
7314 case OMP_CLAUSE_DEFAULT_PRIVATE: | |
7315 share_name = "private"; | |
7316 break; | |
7317 default: | |
7318 gcc_unreachable (); | |
7319 } | |
7320 if (share_name) | |
7321 { | |
7322 error ("%qE is predetermined %qs for %qs", | |
7323 omp_clause_printable_decl (t), share_name, | |
7324 omp_clause_code_name[OMP_CLAUSE_CODE (c)]); | |
7325 remove = true; | |
7326 } | |
7327 } | |
7328 | |
7329 /* We're interested in the base element, not arrays. */ | |
7330 inner_type = type = TREE_TYPE (t); | |
7331 if ((need_complete_type | |
7332 || need_copy_assignment | |
7333 || OMP_CLAUSE_CODE (c) == OMP_CLAUSE_REDUCTION) | |
7334 && TREE_CODE (inner_type) == REFERENCE_TYPE) | |
7335 inner_type = TREE_TYPE (inner_type); | |
7336 while (TREE_CODE (inner_type) == ARRAY_TYPE) | |
7337 inner_type = TREE_TYPE (inner_type); | |
7338 | |
7339 /* Check for special function availability by building a call to one. | |
7340 Save the results, because later we won't be in the right context | |
7341 for making these queries. */ | |
7342 if (CLASS_TYPE_P (inner_type) | |
7343 && COMPLETE_TYPE_P (inner_type) | |
7344 && (need_default_ctor || need_copy_ctor | |
7345 || need_copy_assignment || need_dtor) | |
7346 && !type_dependent_expression_p (t) | |
7347 && cxx_omp_create_clause_info (c, inner_type, need_default_ctor, | |
7348 need_copy_ctor, need_copy_assignment, | |
7349 need_dtor)) | |
7350 remove = true; | |
7351 | |
7352 if (!remove | |
7353 && c_kind == OMP_CLAUSE_SHARED | |
7354 && processing_template_decl) | |
7355 { | |
7356 t = omp_clause_decl_field (OMP_CLAUSE_DECL (c)); | |
7357 if (t) | |
7358 OMP_CLAUSE_DECL (c) = t; | |
7359 } | |
7360 | |
7361 if (remove) | |
7362 *pc = OMP_CLAUSE_CHAIN (c); | |
7363 else | |
7364 pc = &OMP_CLAUSE_CHAIN (c); | |
7365 } | |
7366 | |
7367 bitmap_obstack_release (NULL); | |
7368 return clauses; | |
7369 } | |
7370 | |
7371 /* Start processing OpenMP clauses that can include any | |
7372 privatization clauses for non-static data members. */ | |
7373 | |
7374 tree | |
7375 push_omp_privatization_clauses (bool ignore_next) | |
7376 { | |
7377 if (omp_private_member_ignore_next) | |
7378 { | |
7379 omp_private_member_ignore_next = ignore_next; | |
7380 return NULL_TREE; | |
7381 } | |
7382 omp_private_member_ignore_next = ignore_next; | |
7383 if (omp_private_member_map) | |
7384 omp_private_member_vec.safe_push (error_mark_node); | |
7385 return push_stmt_list (); | |
7386 } | |
7387 | |
7388 /* Revert remapping of any non-static data members since | |
7389 the last push_omp_privatization_clauses () call. */ | |
7390 | |
7391 void | |
7392 pop_omp_privatization_clauses (tree stmt) | |
7393 { | |
7394 if (stmt == NULL_TREE) | |
7395 return; | |
7396 stmt = pop_stmt_list (stmt); | |
7397 if (omp_private_member_map) | |
7398 { | |
7399 while (!omp_private_member_vec.is_empty ()) | |
7400 { | |
7401 tree t = omp_private_member_vec.pop (); | |
7402 if (t == error_mark_node) | |
7403 { | |
7404 add_stmt (stmt); | |
7405 return; | |
7406 } | |
7407 bool no_decl_expr = t == integer_zero_node; | |
7408 if (no_decl_expr) | |
7409 t = omp_private_member_vec.pop (); | |
7410 tree *v = omp_private_member_map->get (t); | |
7411 gcc_assert (v); | |
7412 if (!no_decl_expr) | |
7413 add_decl_expr (*v); | |
7414 omp_private_member_map->remove (t); | |
7415 } | |
7416 delete omp_private_member_map; | |
7417 omp_private_member_map = NULL; | |
7418 } | |
7419 add_stmt (stmt); | |
7420 } | |
7421 | |
7422 /* Remember OpenMP privatization clauses mapping and clear it. | |
7423 Used for lambdas. */ | |
7424 | |
7425 void | |
7426 save_omp_privatization_clauses (vec<tree> &save) | |
7427 { | |
7428 save = vNULL; | |
7429 if (omp_private_member_ignore_next) | |
7430 save.safe_push (integer_one_node); | |
7431 omp_private_member_ignore_next = false; | |
7432 if (!omp_private_member_map) | |
7433 return; | |
7434 | |
7435 while (!omp_private_member_vec.is_empty ()) | |
7436 { | |
7437 tree t = omp_private_member_vec.pop (); | |
7438 if (t == error_mark_node) | |
7439 { | |
7440 save.safe_push (t); | |
7441 continue; | |
7442 } | |
7443 tree n = t; | |
7444 if (t == integer_zero_node) | |
7445 t = omp_private_member_vec.pop (); | |
7446 tree *v = omp_private_member_map->get (t); | |
7447 gcc_assert (v); | |
7448 save.safe_push (*v); | |
7449 save.safe_push (t); | |
7450 if (n != t) | |
7451 save.safe_push (n); | |
7452 } | |
7453 delete omp_private_member_map; | |
7454 omp_private_member_map = NULL; | |
7455 } | |
7456 | |
7457 /* Restore OpenMP privatization clauses mapping saved by the | |
7458 above function. */ | |
7459 | |
7460 void | |
7461 restore_omp_privatization_clauses (vec<tree> &save) | |
7462 { | |
7463 gcc_assert (omp_private_member_vec.is_empty ()); | |
7464 omp_private_member_ignore_next = false; | |
7465 if (save.is_empty ()) | |
7466 return; | |
7467 if (save.length () == 1 && save[0] == integer_one_node) | |
7468 { | |
7469 omp_private_member_ignore_next = true; | |
7470 save.release (); | |
7471 return; | |
7472 } | |
7473 | |
7474 omp_private_member_map = new hash_map <tree, tree>; | |
7475 while (!save.is_empty ()) | |
7476 { | |
7477 tree t = save.pop (); | |
7478 tree n = t; | |
7479 if (t != error_mark_node) | |
7480 { | |
7481 if (t == integer_one_node) | |
7482 { | |
7483 omp_private_member_ignore_next = true; | |
7484 gcc_assert (save.is_empty ()); | |
7485 break; | |
7486 } | |
7487 if (t == integer_zero_node) | |
7488 t = save.pop (); | |
7489 tree &v = omp_private_member_map->get_or_insert (t); | |
7490 v = save.pop (); | |
7491 } | |
7492 omp_private_member_vec.safe_push (t); | |
7493 if (n != t) | |
7494 omp_private_member_vec.safe_push (n); | |
7495 } | |
7496 save.release (); | |
7497 } | |
7498 | |
7499 /* For all variables in the tree_list VARS, mark them as thread local. */ | |
7500 | |
7501 void | |
7502 finish_omp_threadprivate (tree vars) | |
7503 { | |
7504 tree t; | |
7505 | |
7506 /* Mark every variable in VARS to be assigned thread local storage. */ | |
7507 for (t = vars; t; t = TREE_CHAIN (t)) | |
7508 { | |
7509 tree v = TREE_PURPOSE (t); | |
7510 | |
7511 if (error_operand_p (v)) | |
7512 ; | |
7513 else if (!VAR_P (v)) | |
7514 error ("%<threadprivate%> %qD is not file, namespace " | |
7515 "or block scope variable", v); | |
7516 /* If V had already been marked threadprivate, it doesn't matter | |
7517 whether it had been used prior to this point. */ | |
7518 else if (TREE_USED (v) | |
7519 && (DECL_LANG_SPECIFIC (v) == NULL | |
7520 || !CP_DECL_THREADPRIVATE_P (v))) | |
7521 error ("%qE declared %<threadprivate%> after first use", v); | |
7522 else if (! TREE_STATIC (v) && ! DECL_EXTERNAL (v)) | |
7523 error ("automatic variable %qE cannot be %<threadprivate%>", v); | |
7524 else if (! COMPLETE_TYPE_P (complete_type (TREE_TYPE (v)))) | |
7525 error ("%<threadprivate%> %qE has incomplete type", v); | |
7526 else if (TREE_STATIC (v) && TYPE_P (CP_DECL_CONTEXT (v)) | |
7527 && CP_DECL_CONTEXT (v) != current_class_type) | |
7528 error ("%<threadprivate%> %qE directive not " | |
7529 "in %qT definition", v, CP_DECL_CONTEXT (v)); | |
7530 else | |
7531 { | |
7532 /* Allocate a LANG_SPECIFIC structure for V, if needed. */ | |
7533 if (DECL_LANG_SPECIFIC (v) == NULL) | |
7534 { | |
7535 retrofit_lang_decl (v); | |
7536 | |
7537 /* Make sure that DECL_DISCRIMINATOR_P continues to be true | |
7538 after the allocation of the lang_decl structure. */ | |
7539 if (DECL_DISCRIMINATOR_P (v)) | |
7540 DECL_LANG_SPECIFIC (v)->u.base.u2sel = 1; | |
7541 } | |
7542 | |
7543 if (! CP_DECL_THREAD_LOCAL_P (v)) | |
7544 { | |
7545 CP_DECL_THREAD_LOCAL_P (v) = true; | |
7546 set_decl_tls_model (v, decl_default_tls_model (v)); | |
7547 /* If rtl has been already set for this var, call | |
7548 make_decl_rtl once again, so that encode_section_info | |
7549 has a chance to look at the new decl flags. */ | |
7550 if (DECL_RTL_SET_P (v)) | |
7551 make_decl_rtl (v); | |
7552 } | |
7553 CP_DECL_THREADPRIVATE_P (v) = 1; | |
7554 } | |
7555 } | |
7556 } | |
7557 | |
7558 /* Build an OpenMP structured block. */ | |
7559 | |
7560 tree | |
7561 begin_omp_structured_block (void) | |
7562 { | |
7563 return do_pushlevel (sk_omp); | |
7564 } | |
7565 | |
7566 tree | |
7567 finish_omp_structured_block (tree block) | |
7568 { | |
7569 return do_poplevel (block); | |
7570 } | |
7571 | |
7572 /* Similarly, except force the retention of the BLOCK. */ | |
7573 | |
7574 tree | |
7575 begin_omp_parallel (void) | |
7576 { | |
7577 keep_next_level (true); | |
7578 return begin_omp_structured_block (); | |
7579 } | |
7580 | |
7581 /* Generate OACC_DATA, with CLAUSES and BLOCK as its compound | |
7582 statement. */ | |
7583 | |
7584 tree | |
7585 finish_oacc_data (tree clauses, tree block) | |
7586 { | |
7587 tree stmt; | |
7588 | |
7589 block = finish_omp_structured_block (block); | |
7590 | |
7591 stmt = make_node (OACC_DATA); | |
7592 TREE_TYPE (stmt) = void_type_node; | |
7593 OACC_DATA_CLAUSES (stmt) = clauses; | |
7594 OACC_DATA_BODY (stmt) = block; | |
7595 | |
7596 return add_stmt (stmt); | |
7597 } | |
7598 | |
7599 /* Generate OACC_HOST_DATA, with CLAUSES and BLOCK as its compound | |
7600 statement. */ | |
7601 | |
7602 tree | |
7603 finish_oacc_host_data (tree clauses, tree block) | |
7604 { | |
7605 tree stmt; | |
7606 | |
7607 block = finish_omp_structured_block (block); | |
7608 | |
7609 stmt = make_node (OACC_HOST_DATA); | |
7610 TREE_TYPE (stmt) = void_type_node; | |
7611 OACC_HOST_DATA_CLAUSES (stmt) = clauses; | |
7612 OACC_HOST_DATA_BODY (stmt) = block; | |
7613 | |
7614 return add_stmt (stmt); | |
7615 } | |
7616 | |
7617 /* Generate OMP construct CODE, with BODY and CLAUSES as its compound | |
7618 statement. */ | |
7619 | |
7620 tree | |
7621 finish_omp_construct (enum tree_code code, tree body, tree clauses) | |
7622 { | |
7623 body = finish_omp_structured_block (body); | |
7624 | |
7625 tree stmt = make_node (code); | |
7626 TREE_TYPE (stmt) = void_type_node; | |
7627 OMP_BODY (stmt) = body; | |
7628 OMP_CLAUSES (stmt) = clauses; | |
7629 | |
7630 return add_stmt (stmt); | |
7631 } | |
7632 | |
7633 tree | |
7634 finish_omp_parallel (tree clauses, tree body) | |
7635 { | |
7636 tree stmt; | |
7637 | |
7638 body = finish_omp_structured_block (body); | |
7639 | |
7640 stmt = make_node (OMP_PARALLEL); | |
7641 TREE_TYPE (stmt) = void_type_node; | |
7642 OMP_PARALLEL_CLAUSES (stmt) = clauses; | |
7643 OMP_PARALLEL_BODY (stmt) = body; | |
7644 | |
7645 return add_stmt (stmt); | |
7646 } | |
7647 | |
7648 tree | |
7649 begin_omp_task (void) | |
7650 { | |
7651 keep_next_level (true); | |
7652 return begin_omp_structured_block (); | |
7653 } | |
7654 | |
7655 tree | |
7656 finish_omp_task (tree clauses, tree body) | |
7657 { | |
7658 tree stmt; | |
7659 | |
7660 body = finish_omp_structured_block (body); | |
7661 | |
7662 stmt = make_node (OMP_TASK); | |
7663 TREE_TYPE (stmt) = void_type_node; | |
7664 OMP_TASK_CLAUSES (stmt) = clauses; | |
7665 OMP_TASK_BODY (stmt) = body; | |
7666 | |
7667 return add_stmt (stmt); | |
7668 } | |
7669 | |
7670 /* Helper function for finish_omp_for. Convert Ith random access iterator | |
7671 into integral iterator. Return FALSE if successful. */ | |
7672 | |
7673 static bool | |
7674 handle_omp_for_class_iterator (int i, location_t locus, enum tree_code code, | |
7675 tree declv, tree orig_declv, tree initv, | |
7676 tree condv, tree incrv, tree *body, | |
7677 tree *pre_body, tree &clauses, tree *lastp, | |
7678 int collapse, int ordered) | |
7679 { | |
7680 tree diff, iter_init, iter_incr = NULL, last; | |
7681 tree incr_var = NULL, orig_pre_body, orig_body, c; | |
7682 tree decl = TREE_VEC_ELT (declv, i); | |
7683 tree init = TREE_VEC_ELT (initv, i); | |
7684 tree cond = TREE_VEC_ELT (condv, i); | |
7685 tree incr = TREE_VEC_ELT (incrv, i); | |
7686 tree iter = decl; | |
7687 location_t elocus = locus; | |
7688 | |
7689 if (init && EXPR_HAS_LOCATION (init)) | |
7690 elocus = EXPR_LOCATION (init); | |
7691 | |
7692 cond = cp_fully_fold (cond); | |
7693 switch (TREE_CODE (cond)) | |
7694 { | |
7695 case GT_EXPR: | |
7696 case GE_EXPR: | |
7697 case LT_EXPR: | |
7698 case LE_EXPR: | |
7699 case NE_EXPR: | |
7700 if (TREE_OPERAND (cond, 1) == iter) | |
7701 cond = build2 (swap_tree_comparison (TREE_CODE (cond)), | |
7702 TREE_TYPE (cond), iter, TREE_OPERAND (cond, 0)); | |
7703 if (TREE_OPERAND (cond, 0) != iter) | |
7704 cond = error_mark_node; | |
7705 else | |
7706 { | |
7707 tree tem = build_x_binary_op (EXPR_LOCATION (cond), | |
7708 TREE_CODE (cond), | |
7709 iter, ERROR_MARK, | |
7710 TREE_OPERAND (cond, 1), ERROR_MARK, | |
7711 NULL, tf_warning_or_error); | |
7712 if (error_operand_p (tem)) | |
7713 return true; | |
7714 } | |
7715 break; | |
7716 default: | |
7717 cond = error_mark_node; | |
7718 break; | |
7719 } | |
7720 if (cond == error_mark_node) | |
7721 { | |
7722 error_at (elocus, "invalid controlling predicate"); | |
7723 return true; | |
7724 } | |
7725 diff = build_x_binary_op (elocus, MINUS_EXPR, TREE_OPERAND (cond, 1), | |
7726 ERROR_MARK, iter, ERROR_MARK, NULL, | |
7727 tf_warning_or_error); | |
7728 diff = cp_fully_fold (diff); | |
7729 if (error_operand_p (diff)) | |
7730 return true; | |
7731 if (TREE_CODE (TREE_TYPE (diff)) != INTEGER_TYPE) | |
7732 { | |
7733 error_at (elocus, "difference between %qE and %qD does not have integer type", | |
7734 TREE_OPERAND (cond, 1), iter); | |
7735 return true; | |
7736 } | |
7737 if (!c_omp_check_loop_iv_exprs (locus, orig_declv, | |
7738 TREE_VEC_ELT (declv, i), NULL_TREE, | |
7739 cond, cp_walk_subtrees)) | |
7740 return true; | |
7741 | |
7742 switch (TREE_CODE (incr)) | |
7743 { | |
7744 case PREINCREMENT_EXPR: | |
7745 case PREDECREMENT_EXPR: | |
7746 case POSTINCREMENT_EXPR: | |
7747 case POSTDECREMENT_EXPR: | |
7748 if (TREE_OPERAND (incr, 0) != iter) | |
7749 { | |
7750 incr = error_mark_node; | |
7751 break; | |
7752 } | |
7753 iter_incr = build_x_unary_op (EXPR_LOCATION (incr), | |
7754 TREE_CODE (incr), iter, | |
7755 tf_warning_or_error); | |
7756 if (error_operand_p (iter_incr)) | |
7757 return true; | |
7758 else if (TREE_CODE (incr) == PREINCREMENT_EXPR | |
7759 || TREE_CODE (incr) == POSTINCREMENT_EXPR) | |
7760 incr = integer_one_node; | |
7761 else | |
7762 incr = integer_minus_one_node; | |
7763 break; | |
7764 case MODIFY_EXPR: | |
7765 if (TREE_OPERAND (incr, 0) != iter) | |
7766 incr = error_mark_node; | |
7767 else if (TREE_CODE (TREE_OPERAND (incr, 1)) == PLUS_EXPR | |
7768 || TREE_CODE (TREE_OPERAND (incr, 1)) == MINUS_EXPR) | |
7769 { | |
7770 tree rhs = TREE_OPERAND (incr, 1); | |
7771 if (TREE_OPERAND (rhs, 0) == iter) | |
7772 { | |
7773 if (TREE_CODE (TREE_TYPE (TREE_OPERAND (rhs, 1))) | |
7774 != INTEGER_TYPE) | |
7775 incr = error_mark_node; | |
7776 else | |
7777 { | |
7778 iter_incr = build_x_modify_expr (EXPR_LOCATION (rhs), | |
7779 iter, TREE_CODE (rhs), | |
7780 TREE_OPERAND (rhs, 1), | |
7781 tf_warning_or_error); | |
7782 if (error_operand_p (iter_incr)) | |
7783 return true; | |
7784 incr = TREE_OPERAND (rhs, 1); | |
7785 incr = cp_convert (TREE_TYPE (diff), incr, | |
7786 tf_warning_or_error); | |
7787 if (TREE_CODE (rhs) == MINUS_EXPR) | |
7788 { | |
7789 incr = build1 (NEGATE_EXPR, TREE_TYPE (diff), incr); | |
7790 incr = fold_simple (incr); | |
7791 } | |
7792 if (TREE_CODE (incr) != INTEGER_CST | |
7793 && (TREE_CODE (incr) != NOP_EXPR | |
7794 || (TREE_CODE (TREE_OPERAND (incr, 0)) | |
7795 != INTEGER_CST))) | |
7796 iter_incr = NULL; | |
7797 } | |
7798 } | |
7799 else if (TREE_OPERAND (rhs, 1) == iter) | |
7800 { | |
7801 if (TREE_CODE (TREE_TYPE (TREE_OPERAND (rhs, 0))) != INTEGER_TYPE | |
7802 || TREE_CODE (rhs) != PLUS_EXPR) | |
7803 incr = error_mark_node; | |
7804 else | |
7805 { | |
7806 iter_incr = build_x_binary_op (EXPR_LOCATION (rhs), | |
7807 PLUS_EXPR, | |
7808 TREE_OPERAND (rhs, 0), | |
7809 ERROR_MARK, iter, | |
7810 ERROR_MARK, NULL, | |
7811 tf_warning_or_error); | |
7812 if (error_operand_p (iter_incr)) | |
7813 return true; | |
7814 iter_incr = build_x_modify_expr (EXPR_LOCATION (rhs), | |
7815 iter, NOP_EXPR, | |
7816 iter_incr, | |
7817 tf_warning_or_error); | |
7818 if (error_operand_p (iter_incr)) | |
7819 return true; | |
7820 incr = TREE_OPERAND (rhs, 0); | |
7821 iter_incr = NULL; | |
7822 } | |
7823 } | |
7824 else | |
7825 incr = error_mark_node; | |
7826 } | |
7827 else | |
7828 incr = error_mark_node; | |
7829 break; | |
7830 default: | |
7831 incr = error_mark_node; | |
7832 break; | |
7833 } | |
7834 | |
7835 if (incr == error_mark_node) | |
7836 { | |
7837 error_at (elocus, "invalid increment expression"); | |
7838 return true; | |
7839 } | |
7840 | |
7841 incr = cp_convert (TREE_TYPE (diff), incr, tf_warning_or_error); | |
7842 bool taskloop_iv_seen = false; | |
7843 for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
7844 if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LASTPRIVATE | |
7845 && OMP_CLAUSE_DECL (c) == iter) | |
7846 { | |
7847 if (code == OMP_TASKLOOP) | |
7848 { | |
7849 taskloop_iv_seen = true; | |
7850 OMP_CLAUSE_LASTPRIVATE_TASKLOOP_IV (c) = 1; | |
7851 } | |
7852 break; | |
7853 } | |
7854 else if (code == OMP_TASKLOOP | |
7855 && OMP_CLAUSE_CODE (c) == OMP_CLAUSE_PRIVATE | |
7856 && OMP_CLAUSE_DECL (c) == iter) | |
7857 { | |
7858 taskloop_iv_seen = true; | |
7859 OMP_CLAUSE_PRIVATE_TASKLOOP_IV (c) = 1; | |
7860 } | |
7861 | |
7862 decl = create_temporary_var (TREE_TYPE (diff)); | |
7863 pushdecl (decl); | |
7864 add_decl_expr (decl); | |
7865 last = create_temporary_var (TREE_TYPE (diff)); | |
7866 pushdecl (last); | |
7867 add_decl_expr (last); | |
7868 if (c && iter_incr == NULL && TREE_CODE (incr) != INTEGER_CST | |
7869 && (!ordered || (i < collapse && collapse > 1))) | |
7870 { | |
7871 incr_var = create_temporary_var (TREE_TYPE (diff)); | |
7872 pushdecl (incr_var); | |
7873 add_decl_expr (incr_var); | |
7874 } | |
7875 gcc_assert (stmts_are_full_exprs_p ()); | |
7876 tree diffvar = NULL_TREE; | |
7877 if (code == OMP_TASKLOOP) | |
7878 { | |
7879 if (!taskloop_iv_seen) | |
7880 { | |
7881 tree ivc = build_omp_clause (locus, OMP_CLAUSE_FIRSTPRIVATE); | |
7882 OMP_CLAUSE_DECL (ivc) = iter; | |
7883 cxx_omp_finish_clause (ivc, NULL); | |
7884 OMP_CLAUSE_CHAIN (ivc) = clauses; | |
7885 clauses = ivc; | |
7886 } | |
7887 tree lvc = build_omp_clause (locus, OMP_CLAUSE_FIRSTPRIVATE); | |
7888 OMP_CLAUSE_DECL (lvc) = last; | |
7889 OMP_CLAUSE_CHAIN (lvc) = clauses; | |
7890 clauses = lvc; | |
7891 diffvar = create_temporary_var (TREE_TYPE (diff)); | |
7892 pushdecl (diffvar); | |
7893 add_decl_expr (diffvar); | |
7894 } | |
7895 | |
7896 orig_pre_body = *pre_body; | |
7897 *pre_body = push_stmt_list (); | |
7898 if (orig_pre_body) | |
7899 add_stmt (orig_pre_body); | |
7900 if (init != NULL) | |
7901 finish_expr_stmt (build_x_modify_expr (elocus, | |
7902 iter, NOP_EXPR, init, | |
7903 tf_warning_or_error)); | |
7904 init = build_int_cst (TREE_TYPE (diff), 0); | |
7905 if (c && iter_incr == NULL | |
7906 && (!ordered || (i < collapse && collapse > 1))) | |
7907 { | |
7908 if (incr_var) | |
7909 { | |
7910 finish_expr_stmt (build_x_modify_expr (elocus, | |
7911 incr_var, NOP_EXPR, | |
7912 incr, tf_warning_or_error)); | |
7913 incr = incr_var; | |
7914 } | |
7915 iter_incr = build_x_modify_expr (elocus, | |
7916 iter, PLUS_EXPR, incr, | |
7917 tf_warning_or_error); | |
7918 } | |
7919 if (c && ordered && i < collapse && collapse > 1) | |
7920 iter_incr = incr; | |
7921 finish_expr_stmt (build_x_modify_expr (elocus, | |
7922 last, NOP_EXPR, init, | |
7923 tf_warning_or_error)); | |
7924 if (diffvar) | |
7925 { | |
7926 finish_expr_stmt (build_x_modify_expr (elocus, | |
7927 diffvar, NOP_EXPR, | |
7928 diff, tf_warning_or_error)); | |
7929 diff = diffvar; | |
7930 } | |
7931 *pre_body = pop_stmt_list (*pre_body); | |
7932 | |
7933 cond = cp_build_binary_op (elocus, | |
7934 TREE_CODE (cond), decl, diff, | |
7935 tf_warning_or_error); | |
7936 incr = build_modify_expr (elocus, decl, NULL_TREE, PLUS_EXPR, | |
7937 elocus, incr, NULL_TREE); | |
7938 | |
7939 orig_body = *body; | |
7940 *body = push_stmt_list (); | |
7941 iter_init = build2 (MINUS_EXPR, TREE_TYPE (diff), decl, last); | |
7942 iter_init = build_x_modify_expr (elocus, | |
7943 iter, PLUS_EXPR, iter_init, | |
7944 tf_warning_or_error); | |
7945 if (iter_init != error_mark_node) | |
7946 iter_init = build1 (NOP_EXPR, void_type_node, iter_init); | |
7947 finish_expr_stmt (iter_init); | |
7948 finish_expr_stmt (build_x_modify_expr (elocus, | |
7949 last, NOP_EXPR, decl, | |
7950 tf_warning_or_error)); | |
7951 add_stmt (orig_body); | |
7952 *body = pop_stmt_list (*body); | |
7953 | |
7954 if (c) | |
7955 { | |
7956 OMP_CLAUSE_LASTPRIVATE_STMT (c) = push_stmt_list (); | |
7957 if (!ordered) | |
7958 finish_expr_stmt (iter_incr); | |
7959 else | |
7960 { | |
7961 iter_init = decl; | |
7962 if (i < collapse && collapse > 1 && !error_operand_p (iter_incr)) | |
7963 iter_init = build2 (PLUS_EXPR, TREE_TYPE (diff), | |
7964 iter_init, iter_incr); | |
7965 iter_init = build2 (MINUS_EXPR, TREE_TYPE (diff), iter_init, last); | |
7966 iter_init = build_x_modify_expr (elocus, | |
7967 iter, PLUS_EXPR, iter_init, | |
7968 tf_warning_or_error); | |
7969 if (iter_init != error_mark_node) | |
7970 iter_init = build1 (NOP_EXPR, void_type_node, iter_init); | |
7971 finish_expr_stmt (iter_init); | |
7972 } | |
7973 OMP_CLAUSE_LASTPRIVATE_STMT (c) | |
7974 = pop_stmt_list (OMP_CLAUSE_LASTPRIVATE_STMT (c)); | |
7975 } | |
7976 | |
7977 TREE_VEC_ELT (declv, i) = decl; | |
7978 TREE_VEC_ELT (initv, i) = init; | |
7979 TREE_VEC_ELT (condv, i) = cond; | |
7980 TREE_VEC_ELT (incrv, i) = incr; | |
7981 *lastp = last; | |
7982 | |
7983 return false; | |
7984 } | |
7985 | |
7986 /* Build and validate an OMP_FOR statement. CLAUSES, BODY, COND, INCR | |
7987 are directly for their associated operands in the statement. DECL | |
7988 and INIT are a combo; if DECL is NULL then INIT ought to be a | |
7989 MODIFY_EXPR, and the DECL should be extracted. PRE_BODY are | |
7990 optional statements that need to go before the loop into its | |
7991 sk_omp scope. */ | |
7992 | |
7993 tree | |
7994 finish_omp_for (location_t locus, enum tree_code code, tree declv, | |
7995 tree orig_declv, tree initv, tree condv, tree incrv, | |
7996 tree body, tree pre_body, vec<tree> *orig_inits, tree clauses) | |
7997 { | |
7998 tree omp_for = NULL, orig_incr = NULL; | |
7999 tree decl = NULL, init, cond, incr, orig_decl = NULL_TREE, block = NULL_TREE; | |
8000 tree last = NULL_TREE; | |
8001 location_t elocus; | |
8002 int i; | |
8003 int collapse = 1; | |
8004 int ordered = 0; | |
8005 | |
8006 gcc_assert (TREE_VEC_LENGTH (declv) == TREE_VEC_LENGTH (initv)); | |
8007 gcc_assert (TREE_VEC_LENGTH (declv) == TREE_VEC_LENGTH (condv)); | |
8008 gcc_assert (TREE_VEC_LENGTH (declv) == TREE_VEC_LENGTH (incrv)); | |
8009 if (TREE_VEC_LENGTH (declv) > 1) | |
8010 { | |
8011 tree c; | |
8012 | |
8013 c = omp_find_clause (clauses, OMP_CLAUSE_TILE); | |
8014 if (c) | |
8015 collapse = list_length (OMP_CLAUSE_TILE_LIST (c)); | |
8016 else | |
8017 { | |
8018 c = omp_find_clause (clauses, OMP_CLAUSE_COLLAPSE); | |
8019 if (c) | |
8020 collapse = tree_to_shwi (OMP_CLAUSE_COLLAPSE_EXPR (c)); | |
8021 if (collapse != TREE_VEC_LENGTH (declv)) | |
8022 ordered = TREE_VEC_LENGTH (declv); | |
8023 } | |
8024 } | |
8025 for (i = 0; i < TREE_VEC_LENGTH (declv); i++) | |
8026 { | |
8027 decl = TREE_VEC_ELT (declv, i); | |
8028 init = TREE_VEC_ELT (initv, i); | |
8029 cond = TREE_VEC_ELT (condv, i); | |
8030 incr = TREE_VEC_ELT (incrv, i); | |
8031 elocus = locus; | |
8032 | |
8033 if (decl == NULL) | |
8034 { | |
8035 if (init != NULL) | |
8036 switch (TREE_CODE (init)) | |
8037 { | |
8038 case MODIFY_EXPR: | |
8039 decl = TREE_OPERAND (init, 0); | |
8040 init = TREE_OPERAND (init, 1); | |
8041 break; | |
8042 case MODOP_EXPR: | |
8043 if (TREE_CODE (TREE_OPERAND (init, 1)) == NOP_EXPR) | |
8044 { | |
8045 decl = TREE_OPERAND (init, 0); | |
8046 init = TREE_OPERAND (init, 2); | |
8047 } | |
8048 break; | |
8049 default: | |
8050 break; | |
8051 } | |
8052 | |
8053 if (decl == NULL) | |
8054 { | |
8055 error_at (locus, | |
8056 "expected iteration declaration or initialization"); | |
8057 return NULL; | |
8058 } | |
8059 } | |
8060 | |
8061 if (init && EXPR_HAS_LOCATION (init)) | |
8062 elocus = EXPR_LOCATION (init); | |
8063 | |
8064 if (cond == NULL) | |
8065 { | |
8066 error_at (elocus, "missing controlling predicate"); | |
8067 return NULL; | |
8068 } | |
8069 | |
8070 if (incr == NULL) | |
8071 { | |
8072 error_at (elocus, "missing increment expression"); | |
8073 return NULL; | |
8074 } | |
8075 | |
8076 TREE_VEC_ELT (declv, i) = decl; | |
8077 TREE_VEC_ELT (initv, i) = init; | |
8078 } | |
8079 | |
8080 if (orig_inits) | |
8081 { | |
8082 bool fail = false; | |
8083 tree orig_init; | |
8084 FOR_EACH_VEC_ELT (*orig_inits, i, orig_init) | |
8085 if (orig_init | |
8086 && !c_omp_check_loop_iv_exprs (locus, declv, | |
8087 TREE_VEC_ELT (declv, i), orig_init, | |
8088 NULL_TREE, cp_walk_subtrees)) | |
8089 fail = true; | |
8090 if (fail) | |
8091 return NULL; | |
8092 } | |
8093 | |
8094 if (dependent_omp_for_p (declv, initv, condv, incrv)) | |
8095 { | |
8096 tree stmt; | |
8097 | |
8098 stmt = make_node (code); | |
8099 | |
8100 for (i = 0; i < TREE_VEC_LENGTH (declv); i++) | |
8101 { | |
8102 /* This is really just a place-holder. We'll be decomposing this | |
8103 again and going through the cp_build_modify_expr path below when | |
8104 we instantiate the thing. */ | |
8105 TREE_VEC_ELT (initv, i) | |
8106 = build2 (MODIFY_EXPR, void_type_node, TREE_VEC_ELT (declv, i), | |
8107 TREE_VEC_ELT (initv, i)); | |
8108 } | |
8109 | |
8110 TREE_TYPE (stmt) = void_type_node; | |
8111 OMP_FOR_INIT (stmt) = initv; | |
8112 OMP_FOR_COND (stmt) = condv; | |
8113 OMP_FOR_INCR (stmt) = incrv; | |
8114 OMP_FOR_BODY (stmt) = body; | |
8115 OMP_FOR_PRE_BODY (stmt) = pre_body; | |
8116 OMP_FOR_CLAUSES (stmt) = clauses; | |
8117 | |
8118 SET_EXPR_LOCATION (stmt, locus); | |
8119 return add_stmt (stmt); | |
8120 } | |
8121 | |
8122 if (!orig_declv) | |
8123 orig_declv = copy_node (declv); | |
8124 | |
8125 if (processing_template_decl) | |
8126 orig_incr = make_tree_vec (TREE_VEC_LENGTH (incrv)); | |
8127 | |
8128 for (i = 0; i < TREE_VEC_LENGTH (declv); ) | |
8129 { | |
8130 decl = TREE_VEC_ELT (declv, i); | |
8131 init = TREE_VEC_ELT (initv, i); | |
8132 cond = TREE_VEC_ELT (condv, i); | |
8133 incr = TREE_VEC_ELT (incrv, i); | |
8134 if (orig_incr) | |
8135 TREE_VEC_ELT (orig_incr, i) = incr; | |
8136 elocus = locus; | |
8137 | |
8138 if (init && EXPR_HAS_LOCATION (init)) | |
8139 elocus = EXPR_LOCATION (init); | |
8140 | |
8141 if (!DECL_P (decl)) | |
8142 { | |
8143 error_at (elocus, "expected iteration declaration or initialization"); | |
8144 return NULL; | |
8145 } | |
8146 | |
8147 if (incr && TREE_CODE (incr) == MODOP_EXPR) | |
8148 { | |
8149 if (orig_incr) | |
8150 TREE_VEC_ELT (orig_incr, i) = incr; | |
8151 incr = cp_build_modify_expr (elocus, TREE_OPERAND (incr, 0), | |
8152 TREE_CODE (TREE_OPERAND (incr, 1)), | |
8153 TREE_OPERAND (incr, 2), | |
8154 tf_warning_or_error); | |
8155 } | |
8156 | |
8157 if (CLASS_TYPE_P (TREE_TYPE (decl))) | |
8158 { | |
8159 if (code == OMP_SIMD) | |
8160 { | |
8161 error_at (elocus, "%<#pragma omp simd%> used with class " | |
8162 "iteration variable %qE", decl); | |
8163 return NULL; | |
8164 } | |
8165 if (code == CILK_FOR && i == 0) | |
8166 orig_decl = decl; | |
8167 if (handle_omp_for_class_iterator (i, locus, code, declv, orig_declv, | |
8168 initv, condv, incrv, &body, | |
8169 &pre_body, clauses, &last, | |
8170 collapse, ordered)) | |
8171 return NULL; | |
8172 continue; | |
8173 } | |
8174 | |
8175 if (!INTEGRAL_TYPE_P (TREE_TYPE (decl)) | |
8176 && !TYPE_PTR_P (TREE_TYPE (decl))) | |
8177 { | |
8178 error_at (elocus, "invalid type for iteration variable %qE", decl); | |
8179 return NULL; | |
8180 } | |
8181 | |
8182 if (!processing_template_decl) | |
8183 { | |
8184 init = fold_build_cleanup_point_expr (TREE_TYPE (init), init); | |
8185 init = cp_build_modify_expr (elocus, decl, NOP_EXPR, init, | |
8186 tf_warning_or_error); | |
8187 } | |
8188 else | |
8189 init = build2 (MODIFY_EXPR, void_type_node, decl, init); | |
8190 if (cond | |
8191 && TREE_SIDE_EFFECTS (cond) | |
8192 && COMPARISON_CLASS_P (cond) | |
8193 && !processing_template_decl) | |
8194 { | |
8195 tree t = TREE_OPERAND (cond, 0); | |
8196 if (TREE_SIDE_EFFECTS (t) | |
8197 && t != decl | |
8198 && (TREE_CODE (t) != NOP_EXPR | |
8199 || TREE_OPERAND (t, 0) != decl)) | |
8200 TREE_OPERAND (cond, 0) | |
8201 = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
8202 | |
8203 t = TREE_OPERAND (cond, 1); | |
8204 if (TREE_SIDE_EFFECTS (t) | |
8205 && t != decl | |
8206 && (TREE_CODE (t) != NOP_EXPR | |
8207 || TREE_OPERAND (t, 0) != decl)) | |
8208 TREE_OPERAND (cond, 1) | |
8209 = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
8210 } | |
8211 if (decl == error_mark_node || init == error_mark_node) | |
8212 return NULL; | |
8213 | |
8214 TREE_VEC_ELT (declv, i) = decl; | |
8215 TREE_VEC_ELT (initv, i) = init; | |
8216 TREE_VEC_ELT (condv, i) = cond; | |
8217 TREE_VEC_ELT (incrv, i) = incr; | |
8218 i++; | |
8219 } | |
8220 | |
8221 if (IS_EMPTY_STMT (pre_body)) | |
8222 pre_body = NULL; | |
8223 | |
8224 if (code == CILK_FOR && !processing_template_decl) | |
8225 block = push_stmt_list (); | |
8226 | |
8227 omp_for = c_finish_omp_for (locus, code, declv, orig_declv, initv, condv, | |
8228 incrv, body, pre_body); | |
8229 | |
8230 /* Check for iterators appearing in lb, b or incr expressions. */ | |
8231 if (omp_for && !c_omp_check_loop_iv (omp_for, orig_declv, cp_walk_subtrees)) | |
8232 omp_for = NULL_TREE; | |
8233 | |
8234 if (omp_for == NULL) | |
8235 { | |
8236 if (block) | |
8237 pop_stmt_list (block); | |
8238 return NULL; | |
8239 } | |
8240 | |
8241 add_stmt (omp_for); | |
8242 | |
8243 for (i = 0; i < TREE_VEC_LENGTH (OMP_FOR_INCR (omp_for)); i++) | |
8244 { | |
8245 decl = TREE_OPERAND (TREE_VEC_ELT (OMP_FOR_INIT (omp_for), i), 0); | |
8246 incr = TREE_VEC_ELT (OMP_FOR_INCR (omp_for), i); | |
8247 | |
8248 if (TREE_CODE (incr) != MODIFY_EXPR) | |
8249 continue; | |
8250 | |
8251 if (TREE_SIDE_EFFECTS (TREE_OPERAND (incr, 1)) | |
8252 && BINARY_CLASS_P (TREE_OPERAND (incr, 1)) | |
8253 && !processing_template_decl) | |
8254 { | |
8255 tree t = TREE_OPERAND (TREE_OPERAND (incr, 1), 0); | |
8256 if (TREE_SIDE_EFFECTS (t) | |
8257 && t != decl | |
8258 && (TREE_CODE (t) != NOP_EXPR | |
8259 || TREE_OPERAND (t, 0) != decl)) | |
8260 TREE_OPERAND (TREE_OPERAND (incr, 1), 0) | |
8261 = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
8262 | |
8263 t = TREE_OPERAND (TREE_OPERAND (incr, 1), 1); | |
8264 if (TREE_SIDE_EFFECTS (t) | |
8265 && t != decl | |
8266 && (TREE_CODE (t) != NOP_EXPR | |
8267 || TREE_OPERAND (t, 0) != decl)) | |
8268 TREE_OPERAND (TREE_OPERAND (incr, 1), 1) | |
8269 = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
8270 } | |
8271 | |
8272 if (orig_incr) | |
8273 TREE_VEC_ELT (OMP_FOR_INCR (omp_for), i) = TREE_VEC_ELT (orig_incr, i); | |
8274 } | |
8275 OMP_FOR_CLAUSES (omp_for) = clauses; | |
8276 | |
8277 /* For simd loops with non-static data member iterators, we could have added | |
8278 OMP_CLAUSE_LINEAR clauses without OMP_CLAUSE_LINEAR_STEP. As we know the | |
8279 step at this point, fill it in. */ | |
8280 if (code == OMP_SIMD && !processing_template_decl | |
8281 && TREE_VEC_LENGTH (OMP_FOR_INCR (omp_for)) == 1) | |
8282 for (tree c = omp_find_clause (clauses, OMP_CLAUSE_LINEAR); c; | |
8283 c = omp_find_clause (OMP_CLAUSE_CHAIN (c), OMP_CLAUSE_LINEAR)) | |
8284 if (OMP_CLAUSE_LINEAR_STEP (c) == NULL_TREE) | |
8285 { | |
8286 decl = TREE_OPERAND (TREE_VEC_ELT (OMP_FOR_INIT (omp_for), 0), 0); | |
8287 gcc_assert (decl == OMP_CLAUSE_DECL (c)); | |
8288 incr = TREE_VEC_ELT (OMP_FOR_INCR (omp_for), 0); | |
8289 tree step, stept; | |
8290 switch (TREE_CODE (incr)) | |
8291 { | |
8292 case PREINCREMENT_EXPR: | |
8293 case POSTINCREMENT_EXPR: | |
8294 /* c_omp_for_incr_canonicalize_ptr() should have been | |
8295 called to massage things appropriately. */ | |
8296 gcc_assert (!POINTER_TYPE_P (TREE_TYPE (decl))); | |
8297 OMP_CLAUSE_LINEAR_STEP (c) = build_int_cst (TREE_TYPE (decl), 1); | |
8298 break; | |
8299 case PREDECREMENT_EXPR: | |
8300 case POSTDECREMENT_EXPR: | |
8301 /* c_omp_for_incr_canonicalize_ptr() should have been | |
8302 called to massage things appropriately. */ | |
8303 gcc_assert (!POINTER_TYPE_P (TREE_TYPE (decl))); | |
8304 OMP_CLAUSE_LINEAR_STEP (c) | |
8305 = build_int_cst (TREE_TYPE (decl), -1); | |
8306 break; | |
8307 case MODIFY_EXPR: | |
8308 gcc_assert (TREE_OPERAND (incr, 0) == decl); | |
8309 incr = TREE_OPERAND (incr, 1); | |
8310 switch (TREE_CODE (incr)) | |
8311 { | |
8312 case PLUS_EXPR: | |
8313 if (TREE_OPERAND (incr, 1) == decl) | |
8314 step = TREE_OPERAND (incr, 0); | |
8315 else | |
8316 step = TREE_OPERAND (incr, 1); | |
8317 break; | |
8318 case MINUS_EXPR: | |
8319 case POINTER_PLUS_EXPR: | |
8320 gcc_assert (TREE_OPERAND (incr, 0) == decl); | |
8321 step = TREE_OPERAND (incr, 1); | |
8322 break; | |
8323 default: | |
8324 gcc_unreachable (); | |
8325 } | |
8326 stept = TREE_TYPE (decl); | |
8327 if (POINTER_TYPE_P (stept)) | |
8328 stept = sizetype; | |
8329 step = fold_convert (stept, step); | |
8330 if (TREE_CODE (incr) == MINUS_EXPR) | |
8331 step = fold_build1 (NEGATE_EXPR, stept, step); | |
8332 OMP_CLAUSE_LINEAR_STEP (c) = step; | |
8333 break; | |
8334 default: | |
8335 gcc_unreachable (); | |
8336 } | |
8337 } | |
8338 | |
8339 if (block) | |
8340 { | |
8341 tree omp_par = make_node (OMP_PARALLEL); | |
8342 TREE_TYPE (omp_par) = void_type_node; | |
8343 OMP_PARALLEL_CLAUSES (omp_par) = NULL_TREE; | |
8344 tree bind = build3 (BIND_EXPR, void_type_node, NULL, NULL, NULL); | |
8345 TREE_SIDE_EFFECTS (bind) = 1; | |
8346 BIND_EXPR_BODY (bind) = pop_stmt_list (block); | |
8347 OMP_PARALLEL_BODY (omp_par) = bind; | |
8348 if (OMP_FOR_PRE_BODY (omp_for)) | |
8349 { | |
8350 add_stmt (OMP_FOR_PRE_BODY (omp_for)); | |
8351 OMP_FOR_PRE_BODY (omp_for) = NULL_TREE; | |
8352 } | |
8353 init = TREE_VEC_ELT (OMP_FOR_INIT (omp_for), 0); | |
8354 decl = TREE_OPERAND (init, 0); | |
8355 cond = TREE_VEC_ELT (OMP_FOR_COND (omp_for), 0); | |
8356 incr = TREE_VEC_ELT (OMP_FOR_INCR (omp_for), 0); | |
8357 tree t = TREE_OPERAND (cond, 1), c, clauses, *pc; | |
8358 clauses = OMP_FOR_CLAUSES (omp_for); | |
8359 OMP_FOR_CLAUSES (omp_for) = NULL_TREE; | |
8360 for (pc = &clauses; *pc; ) | |
8361 if (OMP_CLAUSE_CODE (*pc) == OMP_CLAUSE_SCHEDULE) | |
8362 { | |
8363 gcc_assert (OMP_FOR_CLAUSES (omp_for) == NULL_TREE); | |
8364 OMP_FOR_CLAUSES (omp_for) = *pc; | |
8365 *pc = OMP_CLAUSE_CHAIN (*pc); | |
8366 OMP_CLAUSE_CHAIN (OMP_FOR_CLAUSES (omp_for)) = NULL_TREE; | |
8367 } | |
8368 else | |
8369 { | |
8370 gcc_assert (OMP_CLAUSE_CODE (*pc) == OMP_CLAUSE_FIRSTPRIVATE); | |
8371 pc = &OMP_CLAUSE_CHAIN (*pc); | |
8372 } | |
8373 if (TREE_CODE (t) != INTEGER_CST) | |
8374 { | |
8375 TREE_OPERAND (cond, 1) = get_temp_regvar (TREE_TYPE (t), t); | |
8376 c = build_omp_clause (input_location, OMP_CLAUSE_FIRSTPRIVATE); | |
8377 OMP_CLAUSE_DECL (c) = TREE_OPERAND (cond, 1); | |
8378 OMP_CLAUSE_CHAIN (c) = clauses; | |
8379 clauses = c; | |
8380 } | |
8381 if (TREE_CODE (incr) == MODIFY_EXPR) | |
8382 { | |
8383 t = TREE_OPERAND (TREE_OPERAND (incr, 1), 1); | |
8384 if (TREE_CODE (t) != INTEGER_CST) | |
8385 { | |
8386 TREE_OPERAND (TREE_OPERAND (incr, 1), 1) | |
8387 = get_temp_regvar (TREE_TYPE (t), t); | |
8388 c = build_omp_clause (input_location, OMP_CLAUSE_FIRSTPRIVATE); | |
8389 OMP_CLAUSE_DECL (c) = TREE_OPERAND (TREE_OPERAND (incr, 1), 1); | |
8390 OMP_CLAUSE_CHAIN (c) = clauses; | |
8391 clauses = c; | |
8392 } | |
8393 } | |
8394 t = TREE_OPERAND (init, 1); | |
8395 if (TREE_CODE (t) != INTEGER_CST) | |
8396 { | |
8397 TREE_OPERAND (init, 1) = get_temp_regvar (TREE_TYPE (t), t); | |
8398 c = build_omp_clause (input_location, OMP_CLAUSE_FIRSTPRIVATE); | |
8399 OMP_CLAUSE_DECL (c) = TREE_OPERAND (init, 1); | |
8400 OMP_CLAUSE_CHAIN (c) = clauses; | |
8401 clauses = c; | |
8402 } | |
8403 if (orig_decl && orig_decl != decl) | |
8404 { | |
8405 c = build_omp_clause (input_location, OMP_CLAUSE_FIRSTPRIVATE); | |
8406 OMP_CLAUSE_DECL (c) = orig_decl; | |
8407 OMP_CLAUSE_CHAIN (c) = clauses; | |
8408 clauses = c; | |
8409 } | |
8410 if (last) | |
8411 { | |
8412 c = build_omp_clause (input_location, OMP_CLAUSE_FIRSTPRIVATE); | |
8413 OMP_CLAUSE_DECL (c) = last; | |
8414 OMP_CLAUSE_CHAIN (c) = clauses; | |
8415 clauses = c; | |
8416 } | |
8417 c = build_omp_clause (input_location, OMP_CLAUSE_PRIVATE); | |
8418 OMP_CLAUSE_DECL (c) = decl; | |
8419 OMP_CLAUSE_CHAIN (c) = clauses; | |
8420 clauses = c; | |
8421 c = build_omp_clause (input_location, OMP_CLAUSE__CILK_FOR_COUNT_); | |
8422 OMP_CLAUSE_OPERAND (c, 0) | |
8423 = cilk_for_number_of_iterations (omp_for); | |
8424 OMP_CLAUSE_CHAIN (c) = clauses; | |
8425 OMP_PARALLEL_CLAUSES (omp_par) = finish_omp_clauses (c, C_ORT_CILK); | |
8426 add_stmt (omp_par); | |
8427 return omp_par; | |
8428 } | |
8429 else if (code == CILK_FOR && processing_template_decl) | |
8430 { | |
8431 tree c, clauses = OMP_FOR_CLAUSES (omp_for); | |
8432 if (orig_decl && orig_decl != decl) | |
8433 { | |
8434 c = build_omp_clause (input_location, OMP_CLAUSE_FIRSTPRIVATE); | |
8435 OMP_CLAUSE_DECL (c) = orig_decl; | |
8436 OMP_CLAUSE_CHAIN (c) = clauses; | |
8437 clauses = c; | |
8438 } | |
8439 if (last) | |
8440 { | |
8441 c = build_omp_clause (input_location, OMP_CLAUSE_FIRSTPRIVATE); | |
8442 OMP_CLAUSE_DECL (c) = last; | |
8443 OMP_CLAUSE_CHAIN (c) = clauses; | |
8444 clauses = c; | |
8445 } | |
8446 OMP_FOR_CLAUSES (omp_for) = clauses; | |
8447 } | |
8448 return omp_for; | |
8449 } | |
8450 | |
8451 void | |
8452 finish_omp_atomic (enum tree_code code, enum tree_code opcode, tree lhs, | |
8453 tree rhs, tree v, tree lhs1, tree rhs1, bool seq_cst) | |
8454 { | |
8455 tree orig_lhs; | |
8456 tree orig_rhs; | |
8457 tree orig_v; | |
8458 tree orig_lhs1; | |
8459 tree orig_rhs1; | |
8460 bool dependent_p; | |
8461 tree stmt; | |
8462 | |
8463 orig_lhs = lhs; | |
8464 orig_rhs = rhs; | |
8465 orig_v = v; | |
8466 orig_lhs1 = lhs1; | |
8467 orig_rhs1 = rhs1; | |
8468 dependent_p = false; | |
8469 stmt = NULL_TREE; | |
8470 | |
8471 /* Even in a template, we can detect invalid uses of the atomic | |
8472 pragma if neither LHS nor RHS is type-dependent. */ | |
8473 if (processing_template_decl) | |
8474 { | |
8475 dependent_p = (type_dependent_expression_p (lhs) | |
8476 || (rhs && type_dependent_expression_p (rhs)) | |
8477 || (v && type_dependent_expression_p (v)) | |
8478 || (lhs1 && type_dependent_expression_p (lhs1)) | |
8479 || (rhs1 && type_dependent_expression_p (rhs1))); | |
8480 if (!dependent_p) | |
8481 { | |
8482 lhs = build_non_dependent_expr (lhs); | |
8483 if (rhs) | |
8484 rhs = build_non_dependent_expr (rhs); | |
8485 if (v) | |
8486 v = build_non_dependent_expr (v); | |
8487 if (lhs1) | |
8488 lhs1 = build_non_dependent_expr (lhs1); | |
8489 if (rhs1) | |
8490 rhs1 = build_non_dependent_expr (rhs1); | |
8491 } | |
8492 } | |
8493 if (!dependent_p) | |
8494 { | |
8495 bool swapped = false; | |
8496 if (rhs1 && cp_tree_equal (lhs, rhs)) | |
8497 { | |
8498 std::swap (rhs, rhs1); | |
8499 swapped = !commutative_tree_code (opcode); | |
8500 } | |
8501 if (rhs1 && !cp_tree_equal (lhs, rhs1)) | |
8502 { | |
8503 if (code == OMP_ATOMIC) | |
8504 error ("%<#pragma omp atomic update%> uses two different " | |
8505 "expressions for memory"); | |
8506 else | |
8507 error ("%<#pragma omp atomic capture%> uses two different " | |
8508 "expressions for memory"); | |
8509 return; | |
8510 } | |
8511 if (lhs1 && !cp_tree_equal (lhs, lhs1)) | |
8512 { | |
8513 if (code == OMP_ATOMIC) | |
8514 error ("%<#pragma omp atomic update%> uses two different " | |
8515 "expressions for memory"); | |
8516 else | |
8517 error ("%<#pragma omp atomic capture%> uses two different " | |
8518 "expressions for memory"); | |
8519 return; | |
8520 } | |
8521 stmt = c_finish_omp_atomic (input_location, code, opcode, lhs, rhs, | |
8522 v, lhs1, rhs1, swapped, seq_cst, | |
8523 processing_template_decl != 0); | |
8524 if (stmt == error_mark_node) | |
8525 return; | |
8526 } | |
8527 if (processing_template_decl) | |
8528 { | |
8529 if (code == OMP_ATOMIC_READ) | |
8530 { | |
8531 stmt = build_min_nt_loc (EXPR_LOCATION (orig_lhs), | |
8532 OMP_ATOMIC_READ, orig_lhs); | |
8533 OMP_ATOMIC_SEQ_CST (stmt) = seq_cst; | |
8534 stmt = build2 (MODIFY_EXPR, void_type_node, orig_v, stmt); | |
8535 } | |
8536 else | |
8537 { | |
8538 if (opcode == NOP_EXPR) | |
8539 stmt = build2 (MODIFY_EXPR, void_type_node, orig_lhs, orig_rhs); | |
8540 else | |
8541 stmt = build2 (opcode, void_type_node, orig_lhs, orig_rhs); | |
8542 if (orig_rhs1) | |
8543 stmt = build_min_nt_loc (EXPR_LOCATION (orig_rhs1), | |
8544 COMPOUND_EXPR, orig_rhs1, stmt); | |
8545 if (code != OMP_ATOMIC) | |
8546 { | |
8547 stmt = build_min_nt_loc (EXPR_LOCATION (orig_lhs1), | |
8548 code, orig_lhs1, stmt); | |
8549 OMP_ATOMIC_SEQ_CST (stmt) = seq_cst; | |
8550 stmt = build2 (MODIFY_EXPR, void_type_node, orig_v, stmt); | |
8551 } | |
8552 } | |
8553 stmt = build2 (OMP_ATOMIC, void_type_node, integer_zero_node, stmt); | |
8554 OMP_ATOMIC_SEQ_CST (stmt) = seq_cst; | |
8555 } | |
8556 finish_expr_stmt (stmt); | |
8557 } | |
8558 | |
8559 void | |
8560 finish_omp_barrier (void) | |
8561 { | |
8562 tree fn = builtin_decl_explicit (BUILT_IN_GOMP_BARRIER); | |
8563 vec<tree, va_gc> *vec = make_tree_vector (); | |
8564 tree stmt = finish_call_expr (fn, &vec, false, false, tf_warning_or_error); | |
8565 release_tree_vector (vec); | |
8566 finish_expr_stmt (stmt); | |
8567 } | |
8568 | |
8569 void | |
8570 finish_omp_flush (void) | |
8571 { | |
8572 tree fn = builtin_decl_explicit (BUILT_IN_SYNC_SYNCHRONIZE); | |
8573 vec<tree, va_gc> *vec = make_tree_vector (); | |
8574 tree stmt = finish_call_expr (fn, &vec, false, false, tf_warning_or_error); | |
8575 release_tree_vector (vec); | |
8576 finish_expr_stmt (stmt); | |
8577 } | |
8578 | |
8579 void | |
8580 finish_omp_taskwait (void) | |
8581 { | |
8582 tree fn = builtin_decl_explicit (BUILT_IN_GOMP_TASKWAIT); | |
8583 vec<tree, va_gc> *vec = make_tree_vector (); | |
8584 tree stmt = finish_call_expr (fn, &vec, false, false, tf_warning_or_error); | |
8585 release_tree_vector (vec); | |
8586 finish_expr_stmt (stmt); | |
8587 } | |
8588 | |
8589 void | |
8590 finish_omp_taskyield (void) | |
8591 { | |
8592 tree fn = builtin_decl_explicit (BUILT_IN_GOMP_TASKYIELD); | |
8593 vec<tree, va_gc> *vec = make_tree_vector (); | |
8594 tree stmt = finish_call_expr (fn, &vec, false, false, tf_warning_or_error); | |
8595 release_tree_vector (vec); | |
8596 finish_expr_stmt (stmt); | |
8597 } | |
8598 | |
8599 void | |
8600 finish_omp_cancel (tree clauses) | |
8601 { | |
8602 tree fn = builtin_decl_explicit (BUILT_IN_GOMP_CANCEL); | |
8603 int mask = 0; | |
8604 if (omp_find_clause (clauses, OMP_CLAUSE_PARALLEL)) | |
8605 mask = 1; | |
8606 else if (omp_find_clause (clauses, OMP_CLAUSE_FOR)) | |
8607 mask = 2; | |
8608 else if (omp_find_clause (clauses, OMP_CLAUSE_SECTIONS)) | |
8609 mask = 4; | |
8610 else if (omp_find_clause (clauses, OMP_CLAUSE_TASKGROUP)) | |
8611 mask = 8; | |
8612 else | |
8613 { | |
8614 error ("%<#pragma omp cancel%> must specify one of " | |
8615 "%<parallel%>, %<for%>, %<sections%> or %<taskgroup%> clauses"); | |
8616 return; | |
8617 } | |
8618 vec<tree, va_gc> *vec = make_tree_vector (); | |
8619 tree ifc = omp_find_clause (clauses, OMP_CLAUSE_IF); | |
8620 if (ifc != NULL_TREE) | |
8621 { | |
8622 tree type = TREE_TYPE (OMP_CLAUSE_IF_EXPR (ifc)); | |
8623 ifc = fold_build2_loc (OMP_CLAUSE_LOCATION (ifc), NE_EXPR, | |
8624 boolean_type_node, OMP_CLAUSE_IF_EXPR (ifc), | |
8625 build_zero_cst (type)); | |
8626 } | |
8627 else | |
8628 ifc = boolean_true_node; | |
8629 vec->quick_push (build_int_cst (integer_type_node, mask)); | |
8630 vec->quick_push (ifc); | |
8631 tree stmt = finish_call_expr (fn, &vec, false, false, tf_warning_or_error); | |
8632 release_tree_vector (vec); | |
8633 finish_expr_stmt (stmt); | |
8634 } | |
8635 | |
8636 void | |
8637 finish_omp_cancellation_point (tree clauses) | |
8638 { | |
8639 tree fn = builtin_decl_explicit (BUILT_IN_GOMP_CANCELLATION_POINT); | |
8640 int mask = 0; | |
8641 if (omp_find_clause (clauses, OMP_CLAUSE_PARALLEL)) | |
8642 mask = 1; | |
8643 else if (omp_find_clause (clauses, OMP_CLAUSE_FOR)) | |
8644 mask = 2; | |
8645 else if (omp_find_clause (clauses, OMP_CLAUSE_SECTIONS)) | |
8646 mask = 4; | |
8647 else if (omp_find_clause (clauses, OMP_CLAUSE_TASKGROUP)) | |
8648 mask = 8; | |
8649 else | |
8650 { | |
8651 error ("%<#pragma omp cancellation point%> must specify one of " | |
8652 "%<parallel%>, %<for%>, %<sections%> or %<taskgroup%> clauses"); | |
8653 return; | |
8654 } | |
8655 vec<tree, va_gc> *vec | |
8656 = make_tree_vector_single (build_int_cst (integer_type_node, mask)); | |
8657 tree stmt = finish_call_expr (fn, &vec, false, false, tf_warning_or_error); | |
8658 release_tree_vector (vec); | |
8659 finish_expr_stmt (stmt); | |
8660 } | |
8661 | |
8662 /* Begin a __transaction_atomic or __transaction_relaxed statement. | |
8663 If PCOMPOUND is non-null, this is for a function-transaction-block, and we | |
8664 should create an extra compound stmt. */ | |
8665 | |
8666 tree | |
8667 begin_transaction_stmt (location_t loc, tree *pcompound, int flags) | |
8668 { | |
8669 tree r; | |
8670 | |
8671 if (pcompound) | |
8672 *pcompound = begin_compound_stmt (0); | |
8673 | |
8674 r = build_stmt (loc, TRANSACTION_EXPR, NULL_TREE); | |
8675 | |
8676 /* Only add the statement to the function if support enabled. */ | |
8677 if (flag_tm) | |
8678 add_stmt (r); | |
8679 else | |
8680 error_at (loc, ((flags & TM_STMT_ATTR_RELAXED) != 0 | |
8681 ? G_("%<__transaction_relaxed%> without " | |
8682 "transactional memory support enabled") | |
8683 : G_("%<__transaction_atomic%> without " | |
8684 "transactional memory support enabled"))); | |
8685 | |
8686 TRANSACTION_EXPR_BODY (r) = push_stmt_list (); | |
8687 TREE_SIDE_EFFECTS (r) = 1; | |
8688 return r; | |
8689 } | |
8690 | |
8691 /* End a __transaction_atomic or __transaction_relaxed statement. | |
8692 If COMPOUND_STMT is non-null, this is for a function-transaction-block, | |
8693 and we should end the compound. If NOEX is non-NULL, we wrap the body in | |
8694 a MUST_NOT_THROW_EXPR with NOEX as condition. */ | |
8695 | |
8696 void | |
8697 finish_transaction_stmt (tree stmt, tree compound_stmt, int flags, tree noex) | |
8698 { | |
8699 TRANSACTION_EXPR_BODY (stmt) = pop_stmt_list (TRANSACTION_EXPR_BODY (stmt)); | |
8700 TRANSACTION_EXPR_OUTER (stmt) = (flags & TM_STMT_ATTR_OUTER) != 0; | |
8701 TRANSACTION_EXPR_RELAXED (stmt) = (flags & TM_STMT_ATTR_RELAXED) != 0; | |
8702 TRANSACTION_EXPR_IS_STMT (stmt) = 1; | |
8703 | |
8704 /* noexcept specifications are not allowed for function transactions. */ | |
8705 gcc_assert (!(noex && compound_stmt)); | |
8706 if (noex) | |
8707 { | |
8708 tree body = build_must_not_throw_expr (TRANSACTION_EXPR_BODY (stmt), | |
8709 noex); | |
8710 protected_set_expr_location | |
8711 (body, EXPR_LOCATION (TRANSACTION_EXPR_BODY (stmt))); | |
8712 TREE_SIDE_EFFECTS (body) = 1; | |
8713 TRANSACTION_EXPR_BODY (stmt) = body; | |
8714 } | |
8715 | |
8716 if (compound_stmt) | |
8717 finish_compound_stmt (compound_stmt); | |
8718 } | |
8719 | |
8720 /* Build a __transaction_atomic or __transaction_relaxed expression. If | |
8721 NOEX is non-NULL, we wrap the body in a MUST_NOT_THROW_EXPR with NOEX as | |
8722 condition. */ | |
8723 | |
8724 tree | |
8725 build_transaction_expr (location_t loc, tree expr, int flags, tree noex) | |
8726 { | |
8727 tree ret; | |
8728 if (noex) | |
8729 { | |
8730 expr = build_must_not_throw_expr (expr, noex); | |
8731 protected_set_expr_location (expr, loc); | |
8732 TREE_SIDE_EFFECTS (expr) = 1; | |
8733 } | |
8734 ret = build1 (TRANSACTION_EXPR, TREE_TYPE (expr), expr); | |
8735 if (flags & TM_STMT_ATTR_RELAXED) | |
8736 TRANSACTION_EXPR_RELAXED (ret) = 1; | |
8737 TREE_SIDE_EFFECTS (ret) = 1; | |
8738 SET_EXPR_LOCATION (ret, loc); | |
8739 return ret; | |
8740 } | |
8741 | |
8742 void | |
8743 init_cp_semantics (void) | |
8744 { | |
8745 } | |
8746 | |
8747 /* Build a STATIC_ASSERT for a static assertion with the condition | |
8748 CONDITION and the message text MESSAGE. LOCATION is the location | |
8749 of the static assertion in the source code. When MEMBER_P, this | |
8750 static assertion is a member of a class. */ | |
8751 void | |
8752 finish_static_assert (tree condition, tree message, location_t location, | |
8753 bool member_p) | |
8754 { | |
8755 if (message == NULL_TREE | |
8756 || message == error_mark_node | |
8757 || condition == NULL_TREE | |
8758 || condition == error_mark_node) | |
8759 return; | |
8760 | |
8761 if (check_for_bare_parameter_packs (condition)) | |
8762 condition = error_mark_node; | |
8763 | |
8764 if (type_dependent_expression_p (condition) | |
8765 || value_dependent_expression_p (condition)) | |
8766 { | |
8767 /* We're in a template; build a STATIC_ASSERT and put it in | |
8768 the right place. */ | |
8769 tree assertion; | |
8770 | |
8771 assertion = make_node (STATIC_ASSERT); | |
8772 STATIC_ASSERT_CONDITION (assertion) = condition; | |
8773 STATIC_ASSERT_MESSAGE (assertion) = message; | |
8774 STATIC_ASSERT_SOURCE_LOCATION (assertion) = location; | |
8775 | |
8776 if (member_p) | |
8777 maybe_add_class_template_decl_list (current_class_type, | |
8778 assertion, | |
8779 /*friend_p=*/0); | |
8780 else | |
8781 add_stmt (assertion); | |
8782 | |
8783 return; | |
8784 } | |
8785 | |
8786 /* Fold the expression and convert it to a boolean value. */ | |
8787 condition = instantiate_non_dependent_expr (condition); | |
8788 condition = cp_convert (boolean_type_node, condition, tf_warning_or_error); | |
8789 condition = maybe_constant_value (condition); | |
8790 | |
8791 if (TREE_CODE (condition) == INTEGER_CST && !integer_zerop (condition)) | |
8792 /* Do nothing; the condition is satisfied. */ | |
8793 ; | |
8794 else | |
8795 { | |
8796 location_t saved_loc = input_location; | |
8797 | |
8798 input_location = location; | |
8799 if (TREE_CODE (condition) == INTEGER_CST | |
8800 && integer_zerop (condition)) | |
8801 { | |
8802 int sz = TREE_INT_CST_LOW (TYPE_SIZE_UNIT | |
8803 (TREE_TYPE (TREE_TYPE (message)))); | |
8804 int len = TREE_STRING_LENGTH (message) / sz - 1; | |
8805 /* Report the error. */ | |
8806 if (len == 0) | |
8807 error ("static assertion failed"); | |
8808 else | |
8809 error ("static assertion failed: %s", | |
8810 TREE_STRING_POINTER (message)); | |
8811 } | |
8812 else if (condition && condition != error_mark_node) | |
8813 { | |
8814 error ("non-constant condition for static assertion"); | |
8815 if (require_potential_rvalue_constant_expression (condition)) | |
8816 cxx_constant_value (condition); | |
8817 } | |
8818 input_location = saved_loc; | |
8819 } | |
8820 } | |
8821 | |
8822 /* Implements the C++0x decltype keyword. Returns the type of EXPR, | |
8823 suitable for use as a type-specifier. | |
8824 | |
8825 ID_EXPRESSION_OR_MEMBER_ACCESS_P is true when EXPR was parsed as an | |
8826 id-expression or a class member access, FALSE when it was parsed as | |
8827 a full expression. */ | |
8828 | |
8829 tree | |
8830 finish_decltype_type (tree expr, bool id_expression_or_member_access_p, | |
8831 tsubst_flags_t complain) | |
8832 { | |
8833 tree type = NULL_TREE; | |
8834 | |
8835 if (!expr || error_operand_p (expr)) | |
8836 return error_mark_node; | |
8837 | |
8838 if (TYPE_P (expr) | |
8839 || TREE_CODE (expr) == TYPE_DECL | |
8840 || (TREE_CODE (expr) == BIT_NOT_EXPR | |
8841 && TYPE_P (TREE_OPERAND (expr, 0)))) | |
8842 { | |
8843 if (complain & tf_error) | |
8844 error ("argument to decltype must be an expression"); | |
8845 return error_mark_node; | |
8846 } | |
8847 | |
8848 /* Depending on the resolution of DR 1172, we may later need to distinguish | |
8849 instantiation-dependent but not type-dependent expressions so that, say, | |
8850 A<decltype(sizeof(T))>::U doesn't require 'typename'. */ | |
8851 if (instantiation_dependent_uneval_expression_p (expr)) | |
8852 { | |
8853 type = cxx_make_type (DECLTYPE_TYPE); | |
8854 DECLTYPE_TYPE_EXPR (type) = expr; | |
8855 DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P (type) | |
8856 = id_expression_or_member_access_p; | |
8857 SET_TYPE_STRUCTURAL_EQUALITY (type); | |
8858 | |
8859 return type; | |
8860 } | |
8861 | |
8862 /* The type denoted by decltype(e) is defined as follows: */ | |
8863 | |
8864 expr = resolve_nondeduced_context (expr, complain); | |
8865 | |
8866 if (invalid_nonstatic_memfn_p (input_location, expr, complain)) | |
8867 return error_mark_node; | |
8868 | |
8869 if (type_unknown_p (expr)) | |
8870 { | |
8871 if (complain & tf_error) | |
8872 error ("decltype cannot resolve address of overloaded function"); | |
8873 return error_mark_node; | |
8874 } | |
8875 | |
8876 /* To get the size of a static data member declared as an array of | |
8877 unknown bound, we need to instantiate it. */ | |
8878 if (VAR_P (expr) | |
8879 && VAR_HAD_UNKNOWN_BOUND (expr) | |
8880 && DECL_TEMPLATE_INSTANTIATION (expr)) | |
8881 instantiate_decl (expr, /*defer_ok*/true, /*expl_inst_mem*/false); | |
8882 | |
8883 if (id_expression_or_member_access_p) | |
8884 { | |
8885 /* If e is an id-expression or a class member access (5.2.5 | |
8886 [expr.ref]), decltype(e) is defined as the type of the entity | |
8887 named by e. If there is no such entity, or e names a set of | |
8888 overloaded functions, the program is ill-formed. */ | |
8889 if (identifier_p (expr)) | |
8890 expr = lookup_name (expr); | |
8891 | |
8892 if (INDIRECT_REF_P (expr)) | |
8893 /* This can happen when the expression is, e.g., "a.b". Just | |
8894 look at the underlying operand. */ | |
8895 expr = TREE_OPERAND (expr, 0); | |
8896 | |
8897 if (TREE_CODE (expr) == OFFSET_REF | |
8898 || TREE_CODE (expr) == MEMBER_REF | |
8899 || TREE_CODE (expr) == SCOPE_REF) | |
8900 /* We're only interested in the field itself. If it is a | |
8901 BASELINK, we will need to see through it in the next | |
8902 step. */ | |
8903 expr = TREE_OPERAND (expr, 1); | |
8904 | |
8905 if (BASELINK_P (expr)) | |
8906 /* See through BASELINK nodes to the underlying function. */ | |
8907 expr = BASELINK_FUNCTIONS (expr); | |
8908 | |
8909 /* decltype of a decomposition name drops references in the tuple case | |
8910 (unlike decltype of a normal variable) and keeps cv-qualifiers from | |
8911 the containing object in the other cases (unlike decltype of a member | |
8912 access expression). */ | |
8913 if (DECL_DECOMPOSITION_P (expr)) | |
8914 { | |
8915 if (DECL_HAS_VALUE_EXPR_P (expr)) | |
8916 /* Expr is an array or struct subobject proxy, handle | |
8917 bit-fields properly. */ | |
8918 return unlowered_expr_type (expr); | |
8919 else | |
8920 /* Expr is a reference variable for the tuple case. */ | |
8921 return lookup_decomp_type (expr); | |
8922 } | |
8923 | |
8924 switch (TREE_CODE (expr)) | |
8925 { | |
8926 case FIELD_DECL: | |
8927 if (DECL_BIT_FIELD_TYPE (expr)) | |
8928 { | |
8929 type = DECL_BIT_FIELD_TYPE (expr); | |
8930 break; | |
8931 } | |
8932 /* Fall through for fields that aren't bitfields. */ | |
8933 gcc_fallthrough (); | |
8934 | |
8935 case FUNCTION_DECL: | |
8936 case VAR_DECL: | |
8937 case CONST_DECL: | |
8938 case PARM_DECL: | |
8939 case RESULT_DECL: | |
8940 case TEMPLATE_PARM_INDEX: | |
8941 expr = mark_type_use (expr); | |
8942 type = TREE_TYPE (expr); | |
8943 break; | |
8944 | |
8945 case ERROR_MARK: | |
8946 type = error_mark_node; | |
8947 break; | |
8948 | |
8949 case COMPONENT_REF: | |
8950 case COMPOUND_EXPR: | |
8951 mark_type_use (expr); | |
8952 type = is_bitfield_expr_with_lowered_type (expr); | |
8953 if (!type) | |
8954 type = TREE_TYPE (TREE_OPERAND (expr, 1)); | |
8955 break; | |
8956 | |
8957 case BIT_FIELD_REF: | |
8958 gcc_unreachable (); | |
8959 | |
8960 case INTEGER_CST: | |
8961 case PTRMEM_CST: | |
8962 /* We can get here when the id-expression refers to an | |
8963 enumerator or non-type template parameter. */ | |
8964 type = TREE_TYPE (expr); | |
8965 break; | |
8966 | |
8967 default: | |
8968 /* Handle instantiated template non-type arguments. */ | |
8969 type = TREE_TYPE (expr); | |
8970 break; | |
8971 } | |
8972 } | |
8973 else | |
8974 { | |
8975 /* Within a lambda-expression: | |
8976 | |
8977 Every occurrence of decltype((x)) where x is a possibly | |
8978 parenthesized id-expression that names an entity of | |
8979 automatic storage duration is treated as if x were | |
8980 transformed into an access to a corresponding data member | |
8981 of the closure type that would have been declared if x | |
8982 were a use of the denoted entity. */ | |
8983 if (outer_automatic_var_p (expr) | |
8984 && current_function_decl | |
8985 && LAMBDA_FUNCTION_P (current_function_decl)) | |
8986 type = capture_decltype (expr); | |
8987 else if (error_operand_p (expr)) | |
8988 type = error_mark_node; | |
8989 else if (expr == current_class_ptr) | |
8990 /* If the expression is just "this", we want the | |
8991 cv-unqualified pointer for the "this" type. */ | |
8992 type = TYPE_MAIN_VARIANT (TREE_TYPE (expr)); | |
8993 else | |
8994 { | |
8995 /* Otherwise, where T is the type of e, if e is an lvalue, | |
8996 decltype(e) is defined as T&; if an xvalue, T&&; otherwise, T. */ | |
8997 cp_lvalue_kind clk = lvalue_kind (expr); | |
8998 type = unlowered_expr_type (expr); | |
8999 gcc_assert (TREE_CODE (type) != REFERENCE_TYPE); | |
9000 | |
9001 /* For vector types, pick a non-opaque variant. */ | |
9002 if (VECTOR_TYPE_P (type)) | |
9003 type = strip_typedefs (type); | |
9004 | |
9005 if (clk != clk_none && !(clk & clk_class)) | |
9006 type = cp_build_reference_type (type, (clk & clk_rvalueref)); | |
9007 } | |
9008 } | |
9009 | |
9010 return type; | |
9011 } | |
9012 | |
9013 /* Called from trait_expr_value to evaluate either __has_nothrow_assign or | |
9014 __has_nothrow_copy, depending on assign_p. Returns true iff all | |
9015 the copy {ctor,assign} fns are nothrow. */ | |
9016 | |
9017 static bool | |
9018 classtype_has_nothrow_assign_or_copy_p (tree type, bool assign_p) | |
9019 { | |
9020 tree fns = NULL_TREE; | |
9021 | |
9022 if (assign_p || TYPE_HAS_COPY_CTOR (type)) | |
9023 fns = get_class_binding (type, | |
9024 assign_p ? cp_assignment_operator_id (NOP_EXPR) | |
9025 : ctor_identifier); | |
9026 | |
9027 bool saw_copy = false; | |
9028 for (ovl_iterator iter (fns); iter; ++iter) | |
9029 { | |
9030 tree fn = *iter; | |
9031 | |
9032 if (copy_fn_p (fn) > 0) | |
9033 { | |
9034 saw_copy = true; | |
9035 maybe_instantiate_noexcept (fn); | |
9036 if (!TYPE_NOTHROW_P (TREE_TYPE (fn))) | |
9037 return false; | |
9038 } | |
9039 } | |
9040 | |
9041 return saw_copy; | |
9042 } | |
9043 | |
9044 /* Actually evaluates the trait. */ | |
9045 | |
9046 static bool | |
9047 trait_expr_value (cp_trait_kind kind, tree type1, tree type2) | |
9048 { | |
9049 enum tree_code type_code1; | |
9050 tree t; | |
9051 | |
9052 type_code1 = TREE_CODE (type1); | |
9053 | |
9054 switch (kind) | |
9055 { | |
9056 case CPTK_HAS_NOTHROW_ASSIGN: | |
9057 type1 = strip_array_types (type1); | |
9058 return (!CP_TYPE_CONST_P (type1) && type_code1 != REFERENCE_TYPE | |
9059 && (trait_expr_value (CPTK_HAS_TRIVIAL_ASSIGN, type1, type2) | |
9060 || (CLASS_TYPE_P (type1) | |
9061 && classtype_has_nothrow_assign_or_copy_p (type1, | |
9062 true)))); | |
9063 | |
9064 case CPTK_HAS_TRIVIAL_ASSIGN: | |
9065 /* ??? The standard seems to be missing the "or array of such a class | |
9066 type" wording for this trait. */ | |
9067 type1 = strip_array_types (type1); | |
9068 return (!CP_TYPE_CONST_P (type1) && type_code1 != REFERENCE_TYPE | |
9069 && (trivial_type_p (type1) | |
9070 || (CLASS_TYPE_P (type1) | |
9071 && TYPE_HAS_TRIVIAL_COPY_ASSIGN (type1)))); | |
9072 | |
9073 case CPTK_HAS_NOTHROW_CONSTRUCTOR: | |
9074 type1 = strip_array_types (type1); | |
9075 return (trait_expr_value (CPTK_HAS_TRIVIAL_CONSTRUCTOR, type1, type2) | |
9076 || (CLASS_TYPE_P (type1) | |
9077 && (t = locate_ctor (type1)) | |
9078 && (maybe_instantiate_noexcept (t), | |
9079 TYPE_NOTHROW_P (TREE_TYPE (t))))); | |
9080 | |
9081 case CPTK_HAS_TRIVIAL_CONSTRUCTOR: | |
9082 type1 = strip_array_types (type1); | |
9083 return (trivial_type_p (type1) | |
9084 || (CLASS_TYPE_P (type1) && TYPE_HAS_TRIVIAL_DFLT (type1))); | |
9085 | |
9086 case CPTK_HAS_NOTHROW_COPY: | |
9087 type1 = strip_array_types (type1); | |
9088 return (trait_expr_value (CPTK_HAS_TRIVIAL_COPY, type1, type2) | |
9089 || (CLASS_TYPE_P (type1) | |
9090 && classtype_has_nothrow_assign_or_copy_p (type1, false))); | |
9091 | |
9092 case CPTK_HAS_TRIVIAL_COPY: | |
9093 /* ??? The standard seems to be missing the "or array of such a class | |
9094 type" wording for this trait. */ | |
9095 type1 = strip_array_types (type1); | |
9096 return (trivial_type_p (type1) || type_code1 == REFERENCE_TYPE | |
9097 || (CLASS_TYPE_P (type1) && TYPE_HAS_TRIVIAL_COPY_CTOR (type1))); | |
9098 | |
9099 case CPTK_HAS_TRIVIAL_DESTRUCTOR: | |
9100 type1 = strip_array_types (type1); | |
9101 return (trivial_type_p (type1) || type_code1 == REFERENCE_TYPE | |
9102 || (CLASS_TYPE_P (type1) | |
9103 && TYPE_HAS_TRIVIAL_DESTRUCTOR (type1))); | |
9104 | |
9105 case CPTK_HAS_VIRTUAL_DESTRUCTOR: | |
9106 return type_has_virtual_destructor (type1); | |
9107 | |
9108 case CPTK_HAS_UNIQUE_OBJ_REPRESENTATIONS: | |
9109 return type_has_unique_obj_representations (type1); | |
9110 | |
9111 case CPTK_IS_ABSTRACT: | |
9112 return ABSTRACT_CLASS_TYPE_P (type1); | |
9113 | |
9114 case CPTK_IS_AGGREGATE: | |
9115 return CP_AGGREGATE_TYPE_P (type1); | |
9116 | |
9117 case CPTK_IS_BASE_OF: | |
9118 return (NON_UNION_CLASS_TYPE_P (type1) && NON_UNION_CLASS_TYPE_P (type2) | |
9119 && (same_type_ignoring_top_level_qualifiers_p (type1, type2) | |
9120 || DERIVED_FROM_P (type1, type2))); | |
9121 | |
9122 case CPTK_IS_CLASS: | |
9123 return NON_UNION_CLASS_TYPE_P (type1); | |
9124 | |
9125 case CPTK_IS_EMPTY: | |
9126 return NON_UNION_CLASS_TYPE_P (type1) && CLASSTYPE_EMPTY_P (type1); | |
9127 | |
9128 case CPTK_IS_ENUM: | |
9129 return type_code1 == ENUMERAL_TYPE; | |
9130 | |
9131 case CPTK_IS_FINAL: | |
9132 return CLASS_TYPE_P (type1) && CLASSTYPE_FINAL (type1); | |
9133 | |
9134 case CPTK_IS_LITERAL_TYPE: | |
9135 return literal_type_p (type1); | |
9136 | |
9137 case CPTK_IS_POD: | |
9138 return pod_type_p (type1); | |
9139 | |
9140 case CPTK_IS_POLYMORPHIC: | |
9141 return CLASS_TYPE_P (type1) && TYPE_POLYMORPHIC_P (type1); | |
9142 | |
9143 case CPTK_IS_SAME_AS: | |
9144 return same_type_p (type1, type2); | |
9145 | |
9146 case CPTK_IS_STD_LAYOUT: | |
9147 return std_layout_type_p (type1); | |
9148 | |
9149 case CPTK_IS_TRIVIAL: | |
9150 return trivial_type_p (type1); | |
9151 | |
9152 case CPTK_IS_TRIVIALLY_ASSIGNABLE: | |
9153 return is_trivially_xible (MODIFY_EXPR, type1, type2); | |
9154 | |
9155 case CPTK_IS_TRIVIALLY_CONSTRUCTIBLE: | |
9156 return is_trivially_xible (INIT_EXPR, type1, type2); | |
9157 | |
9158 case CPTK_IS_TRIVIALLY_COPYABLE: | |
9159 return trivially_copyable_p (type1); | |
9160 | |
9161 case CPTK_IS_UNION: | |
9162 return type_code1 == UNION_TYPE; | |
9163 | |
9164 case CPTK_IS_ASSIGNABLE: | |
9165 return is_xible (MODIFY_EXPR, type1, type2); | |
9166 | |
9167 case CPTK_IS_CONSTRUCTIBLE: | |
9168 return is_xible (INIT_EXPR, type1, type2); | |
9169 | |
9170 default: | |
9171 gcc_unreachable (); | |
9172 return false; | |
9173 } | |
9174 } | |
9175 | |
9176 /* If TYPE is an array of unknown bound, or (possibly cv-qualified) | |
9177 void, or a complete type, returns true, otherwise false. */ | |
9178 | |
9179 static bool | |
9180 check_trait_type (tree type) | |
9181 { | |
9182 if (type == NULL_TREE) | |
9183 return true; | |
9184 | |
9185 if (TREE_CODE (type) == TREE_LIST) | |
9186 return (check_trait_type (TREE_VALUE (type)) | |
9187 && check_trait_type (TREE_CHAIN (type))); | |
9188 | |
9189 if (TREE_CODE (type) == ARRAY_TYPE && !TYPE_DOMAIN (type) | |
9190 && COMPLETE_TYPE_P (TREE_TYPE (type))) | |
9191 return true; | |
9192 | |
9193 if (VOID_TYPE_P (type)) | |
9194 return true; | |
9195 | |
9196 return !!complete_type_or_else (strip_array_types (type), NULL_TREE); | |
9197 } | |
9198 | |
9199 /* Process a trait expression. */ | |
9200 | |
9201 tree | |
9202 finish_trait_expr (cp_trait_kind kind, tree type1, tree type2) | |
9203 { | |
9204 if (type1 == error_mark_node | |
9205 || type2 == error_mark_node) | |
9206 return error_mark_node; | |
9207 | |
9208 if (processing_template_decl) | |
9209 { | |
9210 tree trait_expr = make_node (TRAIT_EXPR); | |
9211 TREE_TYPE (trait_expr) = boolean_type_node; | |
9212 TRAIT_EXPR_TYPE1 (trait_expr) = type1; | |
9213 TRAIT_EXPR_TYPE2 (trait_expr) = type2; | |
9214 TRAIT_EXPR_KIND (trait_expr) = kind; | |
9215 return trait_expr; | |
9216 } | |
9217 | |
9218 switch (kind) | |
9219 { | |
9220 case CPTK_HAS_NOTHROW_ASSIGN: | |
9221 case CPTK_HAS_TRIVIAL_ASSIGN: | |
9222 case CPTK_HAS_NOTHROW_CONSTRUCTOR: | |
9223 case CPTK_HAS_TRIVIAL_CONSTRUCTOR: | |
9224 case CPTK_HAS_NOTHROW_COPY: | |
9225 case CPTK_HAS_TRIVIAL_COPY: | |
9226 case CPTK_HAS_TRIVIAL_DESTRUCTOR: | |
9227 case CPTK_HAS_UNIQUE_OBJ_REPRESENTATIONS: | |
9228 case CPTK_HAS_VIRTUAL_DESTRUCTOR: | |
9229 case CPTK_IS_ABSTRACT: | |
9230 case CPTK_IS_AGGREGATE: | |
9231 case CPTK_IS_EMPTY: | |
9232 case CPTK_IS_FINAL: | |
9233 case CPTK_IS_LITERAL_TYPE: | |
9234 case CPTK_IS_POD: | |
9235 case CPTK_IS_POLYMORPHIC: | |
9236 case CPTK_IS_STD_LAYOUT: | |
9237 case CPTK_IS_TRIVIAL: | |
9238 case CPTK_IS_TRIVIALLY_COPYABLE: | |
9239 if (!check_trait_type (type1)) | |
9240 return error_mark_node; | |
9241 break; | |
9242 | |
9243 case CPTK_IS_ASSIGNABLE: | |
9244 case CPTK_IS_CONSTRUCTIBLE: | |
9245 break; | |
9246 | |
9247 case CPTK_IS_TRIVIALLY_ASSIGNABLE: | |
9248 case CPTK_IS_TRIVIALLY_CONSTRUCTIBLE: | |
9249 if (!check_trait_type (type1) | |
9250 || !check_trait_type (type2)) | |
9251 return error_mark_node; | |
9252 break; | |
9253 | |
9254 case CPTK_IS_BASE_OF: | |
9255 if (NON_UNION_CLASS_TYPE_P (type1) && NON_UNION_CLASS_TYPE_P (type2) | |
9256 && !same_type_ignoring_top_level_qualifiers_p (type1, type2) | |
9257 && !complete_type_or_else (type2, NULL_TREE)) | |
9258 /* We already issued an error. */ | |
9259 return error_mark_node; | |
9260 break; | |
9261 | |
9262 case CPTK_IS_CLASS: | |
9263 case CPTK_IS_ENUM: | |
9264 case CPTK_IS_UNION: | |
9265 case CPTK_IS_SAME_AS: | |
9266 break; | |
9267 | |
9268 default: | |
9269 gcc_unreachable (); | |
9270 } | |
9271 | |
9272 return (trait_expr_value (kind, type1, type2) | |
9273 ? boolean_true_node : boolean_false_node); | |
9274 } | |
9275 | |
9276 /* Do-nothing variants of functions to handle pragma FLOAT_CONST_DECIMAL64, | |
9277 which is ignored for C++. */ | |
9278 | |
9279 void | |
9280 set_float_const_decimal64 (void) | |
9281 { | |
9282 } | |
9283 | |
9284 void | |
9285 clear_float_const_decimal64 (void) | |
9286 { | |
9287 } | |
9288 | |
9289 bool | |
9290 float_const_decimal64_p (void) | |
9291 { | |
9292 return 0; | |
9293 } | |
9294 | |
9295 | |
9296 /* Return true if T designates the implied `this' parameter. */ | |
9297 | |
9298 bool | |
9299 is_this_parameter (tree t) | |
9300 { | |
9301 if (!DECL_P (t) || DECL_NAME (t) != this_identifier) | |
9302 return false; | |
9303 gcc_assert (TREE_CODE (t) == PARM_DECL || is_capture_proxy (t) | |
9304 || (cp_binding_oracle && TREE_CODE (t) == VAR_DECL)); | |
9305 return true; | |
9306 } | |
9307 | |
9308 /* Insert the deduced return type for an auto function. */ | |
9309 | |
9310 void | |
9311 apply_deduced_return_type (tree fco, tree return_type) | |
9312 { | |
9313 tree result; | |
9314 | |
9315 if (return_type == error_mark_node) | |
9316 return; | |
9317 | |
9318 if (DECL_CONV_FN_P (fco)) | |
9319 DECL_NAME (fco) = make_conv_op_name (return_type); | |
9320 | |
9321 TREE_TYPE (fco) = change_return_type (return_type, TREE_TYPE (fco)); | |
9322 | |
9323 result = DECL_RESULT (fco); | |
9324 if (result == NULL_TREE) | |
9325 return; | |
9326 if (TREE_TYPE (result) == return_type) | |
9327 return; | |
9328 | |
9329 if (!processing_template_decl && !VOID_TYPE_P (return_type) | |
9330 && !complete_type_or_else (return_type, NULL_TREE)) | |
9331 return; | |
9332 | |
9333 /* We already have a DECL_RESULT from start_preparsed_function. | |
9334 Now we need to redo the work it and allocate_struct_function | |
9335 did to reflect the new type. */ | |
9336 gcc_assert (current_function_decl == fco); | |
9337 result = build_decl (input_location, RESULT_DECL, NULL_TREE, | |
9338 TYPE_MAIN_VARIANT (return_type)); | |
9339 DECL_ARTIFICIAL (result) = 1; | |
9340 DECL_IGNORED_P (result) = 1; | |
9341 cp_apply_type_quals_to_decl (cp_type_quals (return_type), | |
9342 result); | |
9343 | |
9344 DECL_RESULT (fco) = result; | |
9345 | |
9346 if (!processing_template_decl) | |
9347 { | |
9348 bool aggr = aggregate_value_p (result, fco); | |
9349 #ifdef PCC_STATIC_STRUCT_RETURN | |
9350 cfun->returns_pcc_struct = aggr; | |
9351 #endif | |
9352 cfun->returns_struct = aggr; | |
9353 } | |
9354 | |
9355 } | |
9356 | |
9357 /* DECL is a local variable or parameter from the surrounding scope of a | |
9358 lambda-expression. Returns the decltype for a use of the capture field | |
9359 for DECL even if it hasn't been captured yet. */ | |
9360 | |
9361 static tree | |
9362 capture_decltype (tree decl) | |
9363 { | |
9364 tree lam = CLASSTYPE_LAMBDA_EXPR (DECL_CONTEXT (current_function_decl)); | |
9365 /* FIXME do lookup instead of list walk? */ | |
9366 tree cap = value_member (decl, LAMBDA_EXPR_CAPTURE_LIST (lam)); | |
9367 tree type; | |
9368 | |
9369 if (cap) | |
9370 type = TREE_TYPE (TREE_PURPOSE (cap)); | |
9371 else | |
9372 switch (LAMBDA_EXPR_DEFAULT_CAPTURE_MODE (lam)) | |
9373 { | |
9374 case CPLD_NONE: | |
9375 error ("%qD is not captured", decl); | |
9376 return error_mark_node; | |
9377 | |
9378 case CPLD_COPY: | |
9379 type = TREE_TYPE (decl); | |
9380 if (TREE_CODE (type) == REFERENCE_TYPE | |
9381 && TREE_CODE (TREE_TYPE (type)) != FUNCTION_TYPE) | |
9382 type = TREE_TYPE (type); | |
9383 break; | |
9384 | |
9385 case CPLD_REFERENCE: | |
9386 type = TREE_TYPE (decl); | |
9387 if (TREE_CODE (type) != REFERENCE_TYPE) | |
9388 type = build_reference_type (TREE_TYPE (decl)); | |
9389 break; | |
9390 | |
9391 default: | |
9392 gcc_unreachable (); | |
9393 } | |
9394 | |
9395 if (TREE_CODE (type) != REFERENCE_TYPE) | |
9396 { | |
9397 if (!LAMBDA_EXPR_MUTABLE_P (lam)) | |
9398 type = cp_build_qualified_type (type, (cp_type_quals (type) | |
9399 |TYPE_QUAL_CONST)); | |
9400 type = build_reference_type (type); | |
9401 } | |
9402 return type; | |
9403 } | |
9404 | |
9405 /* Build a unary fold expression of EXPR over OP. If IS_RIGHT is true, | |
9406 this is a right unary fold. Otherwise it is a left unary fold. */ | |
9407 | |
9408 static tree | |
9409 finish_unary_fold_expr (tree expr, int op, tree_code dir) | |
9410 { | |
9411 // Build a pack expansion (assuming expr has pack type). | |
9412 if (!uses_parameter_packs (expr)) | |
9413 { | |
9414 error_at (location_of (expr), "operand of fold expression has no " | |
9415 "unexpanded parameter packs"); | |
9416 return error_mark_node; | |
9417 } | |
9418 tree pack = make_pack_expansion (expr); | |
9419 | |
9420 // Build the fold expression. | |
9421 tree code = build_int_cstu (integer_type_node, abs (op)); | |
9422 tree fold = build_min_nt_loc (UNKNOWN_LOCATION, dir, code, pack); | |
9423 FOLD_EXPR_MODIFY_P (fold) = (op < 0); | |
9424 return fold; | |
9425 } | |
9426 | |
9427 tree | |
9428 finish_left_unary_fold_expr (tree expr, int op) | |
9429 { | |
9430 return finish_unary_fold_expr (expr, op, UNARY_LEFT_FOLD_EXPR); | |
9431 } | |
9432 | |
9433 tree | |
9434 finish_right_unary_fold_expr (tree expr, int op) | |
9435 { | |
9436 return finish_unary_fold_expr (expr, op, UNARY_RIGHT_FOLD_EXPR); | |
9437 } | |
9438 | |
9439 /* Build a binary fold expression over EXPR1 and EXPR2. The | |
9440 associativity of the fold is determined by EXPR1 and EXPR2 (whichever | |
9441 has an unexpanded parameter pack). */ | |
9442 | |
9443 tree | |
9444 finish_binary_fold_expr (tree pack, tree init, int op, tree_code dir) | |
9445 { | |
9446 pack = make_pack_expansion (pack); | |
9447 tree code = build_int_cstu (integer_type_node, abs (op)); | |
9448 tree fold = build_min_nt_loc (UNKNOWN_LOCATION, dir, code, pack, init); | |
9449 FOLD_EXPR_MODIFY_P (fold) = (op < 0); | |
9450 return fold; | |
9451 } | |
9452 | |
9453 tree | |
9454 finish_binary_fold_expr (tree expr1, tree expr2, int op) | |
9455 { | |
9456 // Determine which expr has an unexpanded parameter pack and | |
9457 // set the pack and initial term. | |
9458 bool pack1 = uses_parameter_packs (expr1); | |
9459 bool pack2 = uses_parameter_packs (expr2); | |
9460 if (pack1 && !pack2) | |
9461 return finish_binary_fold_expr (expr1, expr2, op, BINARY_RIGHT_FOLD_EXPR); | |
9462 else if (pack2 && !pack1) | |
9463 return finish_binary_fold_expr (expr2, expr1, op, BINARY_LEFT_FOLD_EXPR); | |
9464 else | |
9465 { | |
9466 if (pack1) | |
9467 error ("both arguments in binary fold have unexpanded parameter packs"); | |
9468 else | |
9469 error ("no unexpanded parameter packs in binary fold"); | |
9470 } | |
9471 return error_mark_node; | |
9472 } | |
9473 | |
9474 /* Finish __builtin_launder (arg). */ | |
9475 | |
9476 tree | |
9477 finish_builtin_launder (location_t loc, tree arg, tsubst_flags_t complain) | |
9478 { | |
9479 tree orig_arg = arg; | |
9480 if (!type_dependent_expression_p (arg)) | |
9481 arg = decay_conversion (arg, complain); | |
9482 if (error_operand_p (arg)) | |
9483 return error_mark_node; | |
9484 if (!type_dependent_expression_p (arg) | |
9485 && TREE_CODE (TREE_TYPE (arg)) != POINTER_TYPE) | |
9486 { | |
9487 error_at (loc, "non-pointer argument to %<__builtin_launder%>"); | |
9488 return error_mark_node; | |
9489 } | |
9490 if (processing_template_decl) | |
9491 arg = orig_arg; | |
9492 return build_call_expr_internal_loc (loc, IFN_LAUNDER, | |
9493 TREE_TYPE (arg), 1, arg); | |
9494 } | |
9495 | |
9496 #include "gt-cp-semantics.h" |