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4ee9c684 | 1 | /* Code translation -- generate GCC trees from gfc_code. |
f1717362 | 2 | Copyright (C) 2002-2016 Free Software Foundation, Inc. |
4ee9c684 | 3 | Contributed by Paul Brook |
4 | ||
c84b470d | 5 | This file is part of GCC. |
4ee9c684 | 6 | |
c84b470d | 7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
bdabe786 | 9 | Software Foundation; either version 3, or (at your option) any later |
c84b470d | 10 | version. |
4ee9c684 | 11 | |
c84b470d | 12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
4ee9c684 | 16 | |
17 | You should have received a copy of the GNU General Public License | |
bdabe786 | 18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
4ee9c684 | 20 | |
21 | #include "config.h" | |
22 | #include "system.h" | |
23 | #include "coretypes.h" | |
9ef16211 | 24 | #include "options.h" |
4cba6f60 | 25 | #include "tree.h" |
26 | #include "gfortran.h" | |
a8783bee | 27 | #include "gimple-expr.h" /* For create_tmp_var_raw. */ |
4cba6f60 | 28 | #include "trans.h" |
9ed99284 | 29 | #include "stringpool.h" |
4cba6f60 | 30 | #include "fold-const.h" |
31 | #include "tree-iterator.h" | |
4ee9c684 | 32 | #include "trans-stmt.h" |
33 | #include "trans-array.h" | |
34 | #include "trans-types.h" | |
35 | #include "trans-const.h" | |
36 | ||
37 | /* Naming convention for backend interface code: | |
38 | ||
39 | gfc_trans_* translate gfc_code into STMT trees. | |
40 | ||
41 | gfc_conv_* expression conversion | |
42 | ||
43 | gfc_get_* get a backend tree representation of a decl or type */ | |
44 | ||
45 | static gfc_file *gfc_current_backend_file; | |
46 | ||
b809df7a | 47 | const char gfc_msg_fault[] = N_("Array reference out of bounds"); |
48 | const char gfc_msg_wrong_return[] = N_("Incorrect function return value"); | |
97c2a00c | 49 | |
4ee9c684 | 50 | |
51 | /* Advance along TREE_CHAIN n times. */ | |
52 | ||
53 | tree | |
54 | gfc_advance_chain (tree t, int n) | |
55 | { | |
56 | for (; n > 0; n--) | |
57 | { | |
22d678e8 | 58 | gcc_assert (t != NULL_TREE); |
1767a056 | 59 | t = DECL_CHAIN (t); |
4ee9c684 | 60 | } |
61 | return t; | |
62 | } | |
63 | ||
64 | ||
4ee9c684 | 65 | /* Strip off a legitimate source ending from the input |
66 | string NAME of length LEN. */ | |
67 | ||
68 | static inline void | |
69 | remove_suffix (char *name, int len) | |
70 | { | |
71 | int i; | |
72 | ||
73 | for (i = 2; i < 8 && len > i; i++) | |
74 | { | |
75 | if (name[len - i] == '.') | |
76 | { | |
77 | name[len - i] = '\0'; | |
78 | break; | |
79 | } | |
80 | } | |
81 | } | |
82 | ||
83 | ||
84 | /* Creates a variable declaration with a given TYPE. */ | |
85 | ||
86 | tree | |
87 | gfc_create_var_np (tree type, const char *prefix) | |
88 | { | |
4453ef2f | 89 | tree t; |
a90fe829 | 90 | |
4453ef2f | 91 | t = create_tmp_var_raw (type, prefix); |
92 | ||
93 | /* No warnings for anonymous variables. */ | |
94 | if (prefix == NULL) | |
95 | TREE_NO_WARNING (t) = 1; | |
96 | ||
97 | return t; | |
4ee9c684 | 98 | } |
99 | ||
100 | ||
101 | /* Like above, but also adds it to the current scope. */ | |
102 | ||
103 | tree | |
104 | gfc_create_var (tree type, const char *prefix) | |
105 | { | |
106 | tree tmp; | |
107 | ||
108 | tmp = gfc_create_var_np (type, prefix); | |
109 | ||
110 | pushdecl (tmp); | |
111 | ||
112 | return tmp; | |
113 | } | |
114 | ||
115 | ||
69b1505f | 116 | /* If the expression is not constant, evaluate it now. We assign the |
4ee9c684 | 117 | result of the expression to an artificially created variable VAR, and |
118 | return a pointer to the VAR_DECL node for this variable. */ | |
119 | ||
120 | tree | |
a5b23678 | 121 | gfc_evaluate_now_loc (location_t loc, tree expr, stmtblock_t * pblock) |
4ee9c684 | 122 | { |
123 | tree var; | |
124 | ||
ce45a448 | 125 | if (CONSTANT_CLASS_P (expr)) |
4ee9c684 | 126 | return expr; |
127 | ||
128 | var = gfc_create_var (TREE_TYPE (expr), NULL); | |
a5b23678 | 129 | gfc_add_modify_loc (loc, pblock, var, expr); |
4ee9c684 | 130 | |
131 | return var; | |
132 | } | |
133 | ||
134 | ||
a5b23678 | 135 | tree |
136 | gfc_evaluate_now (tree expr, stmtblock_t * pblock) | |
137 | { | |
138 | return gfc_evaluate_now_loc (input_location, expr, pblock); | |
139 | } | |
140 | ||
141 | ||
a90fe829 | 142 | /* Build a MODIFY_EXPR node and add it to a given statement block PBLOCK. |
75a70cf9 | 143 | A MODIFY_EXPR is an assignment: |
35cc02b5 | 144 | LHS <- RHS. */ |
4ee9c684 | 145 | |
146 | void | |
a5b23678 | 147 | gfc_add_modify_loc (location_t loc, stmtblock_t * pblock, tree lhs, tree rhs) |
4ee9c684 | 148 | { |
149 | tree tmp; | |
150 | ||
e1b3b79b | 151 | tree t1, t2; |
152 | t1 = TREE_TYPE (rhs); | |
153 | t2 = TREE_TYPE (lhs); | |
260abd71 | 154 | /* Make sure that the types of the rhs and the lhs are the same |
155 | for scalar assignments. We should probably have something | |
156 | similar for aggregates, but right now removing that check just | |
157 | breaks everything. */ | |
1375e422 | 158 | gcc_checking_assert (t1 == t2 |
159 | || AGGREGATE_TYPE_P (TREE_TYPE (lhs))); | |
260abd71 | 160 | |
a5b23678 | 161 | tmp = fold_build2_loc (loc, MODIFY_EXPR, void_type_node, lhs, |
1516b2fb | 162 | rhs); |
4ee9c684 | 163 | gfc_add_expr_to_block (pblock, tmp); |
164 | } | |
165 | ||
166 | ||
a5b23678 | 167 | void |
168 | gfc_add_modify (stmtblock_t * pblock, tree lhs, tree rhs) | |
169 | { | |
170 | gfc_add_modify_loc (input_location, pblock, lhs, rhs); | |
171 | } | |
172 | ||
173 | ||
4ee9c684 | 174 | /* Create a new scope/binding level and initialize a block. Care must be |
231e961a | 175 | taken when translating expressions as any temporaries will be placed in |
4ee9c684 | 176 | the innermost scope. */ |
177 | ||
178 | void | |
179 | gfc_start_block (stmtblock_t * block) | |
180 | { | |
181 | /* Start a new binding level. */ | |
cde2be84 | 182 | pushlevel (); |
4ee9c684 | 183 | block->has_scope = 1; |
184 | ||
185 | /* The block is empty. */ | |
186 | block->head = NULL_TREE; | |
187 | } | |
188 | ||
189 | ||
190 | /* Initialize a block without creating a new scope. */ | |
191 | ||
192 | void | |
193 | gfc_init_block (stmtblock_t * block) | |
194 | { | |
195 | block->head = NULL_TREE; | |
196 | block->has_scope = 0; | |
197 | } | |
198 | ||
199 | ||
200 | /* Sometimes we create a scope but it turns out that we don't actually | |
201 | need it. This function merges the scope of BLOCK with its parent. | |
202 | Only variable decls will be merged, you still need to add the code. */ | |
203 | ||
204 | void | |
205 | gfc_merge_block_scope (stmtblock_t * block) | |
206 | { | |
207 | tree decl; | |
208 | tree next; | |
209 | ||
22d678e8 | 210 | gcc_assert (block->has_scope); |
4ee9c684 | 211 | block->has_scope = 0; |
212 | ||
213 | /* Remember the decls in this scope. */ | |
214 | decl = getdecls (); | |
cde2be84 | 215 | poplevel (0, 0); |
4ee9c684 | 216 | |
217 | /* Add them to the parent scope. */ | |
218 | while (decl != NULL_TREE) | |
219 | { | |
1767a056 | 220 | next = DECL_CHAIN (decl); |
221 | DECL_CHAIN (decl) = NULL_TREE; | |
4ee9c684 | 222 | |
223 | pushdecl (decl); | |
224 | decl = next; | |
225 | } | |
226 | } | |
227 | ||
228 | ||
229 | /* Finish a scope containing a block of statements. */ | |
230 | ||
231 | tree | |
232 | gfc_finish_block (stmtblock_t * stmtblock) | |
233 | { | |
234 | tree decl; | |
235 | tree expr; | |
236 | tree block; | |
237 | ||
150fb090 | 238 | expr = stmtblock->head; |
239 | if (!expr) | |
e60a6f7b | 240 | expr = build_empty_stmt (input_location); |
150fb090 | 241 | |
4ee9c684 | 242 | stmtblock->head = NULL_TREE; |
243 | ||
244 | if (stmtblock->has_scope) | |
245 | { | |
246 | decl = getdecls (); | |
247 | ||
248 | if (decl) | |
249 | { | |
cde2be84 | 250 | block = poplevel (1, 0); |
ed52ef8b | 251 | expr = build3_v (BIND_EXPR, decl, expr, block); |
4ee9c684 | 252 | } |
253 | else | |
cde2be84 | 254 | poplevel (0, 0); |
4ee9c684 | 255 | } |
256 | ||
257 | return expr; | |
258 | } | |
259 | ||
260 | ||
261 | /* Build an ADDR_EXPR and cast the result to TYPE. If TYPE is NULL, the | |
262 | natural type is used. */ | |
263 | ||
264 | tree | |
265 | gfc_build_addr_expr (tree type, tree t) | |
266 | { | |
267 | tree base_type = TREE_TYPE (t); | |
268 | tree natural_type; | |
269 | ||
270 | if (type && POINTER_TYPE_P (type) | |
271 | && TREE_CODE (base_type) == ARRAY_TYPE | |
272 | && TYPE_MAIN_VARIANT (TREE_TYPE (type)) | |
273 | == TYPE_MAIN_VARIANT (TREE_TYPE (base_type))) | |
3ea695db | 274 | { |
275 | tree min_val = size_zero_node; | |
276 | tree type_domain = TYPE_DOMAIN (base_type); | |
277 | if (type_domain && TYPE_MIN_VALUE (type_domain)) | |
278 | min_val = TYPE_MIN_VALUE (type_domain); | |
2be9d8f1 | 279 | t = fold (build4_loc (input_location, ARRAY_REF, TREE_TYPE (type), |
280 | t, min_val, NULL_TREE, NULL_TREE)); | |
3ea695db | 281 | natural_type = type; |
282 | } | |
4ee9c684 | 283 | else |
284 | natural_type = build_pointer_type (base_type); | |
285 | ||
286 | if (TREE_CODE (t) == INDIRECT_REF) | |
287 | { | |
288 | if (!type) | |
289 | type = natural_type; | |
290 | t = TREE_OPERAND (t, 0); | |
291 | natural_type = TREE_TYPE (t); | |
292 | } | |
293 | else | |
294 | { | |
86f2ad37 | 295 | tree base = get_base_address (t); |
296 | if (base && DECL_P (base)) | |
297 | TREE_ADDRESSABLE (base) = 1; | |
1516b2fb | 298 | t = fold_build1_loc (input_location, ADDR_EXPR, natural_type, t); |
4ee9c684 | 299 | } |
300 | ||
301 | if (type && natural_type != type) | |
302 | t = convert (type, t); | |
303 | ||
304 | return t; | |
305 | } | |
306 | ||
307 | ||
4ee9c684 | 308 | /* Build an ARRAY_REF with its natural type. */ |
309 | ||
310 | tree | |
c6793847 | 311 | gfc_build_array_ref (tree base, tree offset, tree decl, tree vptr) |
4ee9c684 | 312 | { |
313 | tree type = TREE_TYPE (base); | |
1033248c | 314 | tree tmp; |
fd23cc08 | 315 | tree span; |
1033248c | 316 | |
c16a0489 | 317 | if (GFC_ARRAY_TYPE_P (type) && GFC_TYPE_ARRAY_RANK (type) == 0) |
318 | { | |
319 | gcc_assert (GFC_TYPE_ARRAY_CORANK (type) > 0); | |
320 | ||
2f112ae3 | 321 | return fold_convert (TYPE_MAIN_VARIANT (type), base); |
c16a0489 | 322 | } |
323 | ||
9633126d | 324 | /* Scalar coarray, there is nothing to do. */ |
325 | if (TREE_CODE (type) != ARRAY_TYPE) | |
326 | { | |
327 | gcc_assert (decl == NULL_TREE); | |
328 | gcc_assert (integer_zerop (offset)); | |
329 | return base; | |
330 | } | |
331 | ||
4ee9c684 | 332 | type = TREE_TYPE (type); |
333 | ||
ee91fa6b | 334 | /* Use pointer arithmetic for deferred character length array |
335 | references. */ | |
336 | if (type && TREE_CODE (type) == ARRAY_TYPE | |
337 | && TYPE_MAXVAL (TYPE_DOMAIN (type)) != NULL_TREE | |
338 | && TREE_CODE (TYPE_MAXVAL (TYPE_DOMAIN (type))) == VAR_DECL | |
339 | && decl | |
340 | && DECL_CONTEXT (TYPE_MAXVAL (TYPE_DOMAIN (type))) | |
341 | == DECL_CONTEXT (decl)) | |
342 | span = TYPE_MAXVAL (TYPE_DOMAIN (type)); | |
343 | else | |
344 | span = NULL_TREE; | |
345 | ||
4ee9c684 | 346 | if (DECL_P (base)) |
347 | TREE_ADDRESSABLE (base) = 1; | |
348 | ||
b303a23b | 349 | /* Strip NON_LVALUE_EXPR nodes. */ |
350 | STRIP_TYPE_NOPS (offset); | |
351 | ||
1033248c | 352 | /* If the array reference is to a pointer, whose target contains a |
353 | subreference, use the span that is stored with the backend decl | |
354 | and reference the element with pointer arithmetic. */ | |
c6793847 | 355 | if ((decl && (TREE_CODE (decl) == FIELD_DECL |
356 | || TREE_CODE (decl) == VAR_DECL | |
357 | || TREE_CODE (decl) == PARM_DECL) | |
358 | && ((GFC_DECL_SUBREF_ARRAY_P (decl) | |
359 | && !integer_zerop (GFC_DECL_SPAN (decl))) | |
ee91fa6b | 360 | || GFC_DECL_CLASS (decl) |
361 | || span != NULL_TREE)) | |
362 | || vptr != NULL_TREE) | |
1033248c | 363 | { |
c6793847 | 364 | if (decl) |
fd23cc08 | 365 | { |
c6793847 | 366 | if (GFC_DECL_CLASS (decl)) |
367 | { | |
368 | /* When a temporary is in place for the class array, then the | |
369 | original class' declaration is stored in the saved | |
370 | descriptor. */ | |
371 | if (DECL_LANG_SPECIFIC (decl) && GFC_DECL_SAVED_DESCRIPTOR (decl)) | |
372 | decl = GFC_DECL_SAVED_DESCRIPTOR (decl); | |
373 | else | |
374 | { | |
375 | /* Allow for dummy arguments and other good things. */ | |
376 | if (POINTER_TYPE_P (TREE_TYPE (decl))) | |
377 | decl = build_fold_indirect_ref_loc (input_location, decl); | |
378 | ||
379 | /* Check if '_data' is an array descriptor. If it is not, | |
380 | the array must be one of the components of the class | |
381 | object, so return a normal array reference. */ | |
382 | if (!GFC_DESCRIPTOR_TYPE_P (TREE_TYPE ( | |
383 | gfc_class_data_get (decl)))) | |
384 | return build4_loc (input_location, ARRAY_REF, type, base, | |
385 | offset, NULL_TREE, NULL_TREE); | |
386 | } | |
387 | ||
388 | span = gfc_class_vtab_size_get (decl); | |
389 | } | |
390 | else if (GFC_DECL_SUBREF_ARRAY_P (decl)) | |
391 | span = GFC_DECL_SPAN (decl); | |
ee91fa6b | 392 | else if (span) |
393 | span = fold_convert (gfc_array_index_type, span); | |
c6793847 | 394 | else |
395 | gcc_unreachable (); | |
fd23cc08 | 396 | } |
c6793847 | 397 | else if (vptr) |
398 | span = gfc_vptr_size_get (vptr); | |
fd23cc08 | 399 | else |
400 | gcc_unreachable (); | |
401 | ||
1516b2fb | 402 | offset = fold_build2_loc (input_location, MULT_EXPR, |
403 | gfc_array_index_type, | |
fd23cc08 | 404 | offset, span); |
1033248c | 405 | tmp = gfc_build_addr_expr (pvoid_type_node, base); |
2cc66f2a | 406 | tmp = fold_build_pointer_plus_loc (input_location, tmp, offset); |
1033248c | 407 | tmp = fold_convert (build_pointer_type (type), tmp); |
408 | if (!TYPE_STRING_FLAG (type)) | |
389dd41b | 409 | tmp = build_fold_indirect_ref_loc (input_location, tmp); |
1033248c | 410 | return tmp; |
411 | } | |
412 | else | |
413 | /* Otherwise use a straightforward array reference. */ | |
2be9d8f1 | 414 | return build4_loc (input_location, ARRAY_REF, type, base, offset, |
415 | NULL_TREE, NULL_TREE); | |
4ee9c684 | 416 | } |
417 | ||
418 | ||
98d2202b | 419 | /* Generate a call to print a runtime error possibly including multiple |
420 | arguments and a locus. */ | |
4ee9c684 | 421 | |
a5b23678 | 422 | static tree |
423 | trans_runtime_error_vararg (bool error, locus* where, const char* msgid, | |
424 | va_list ap) | |
98d2202b | 425 | { |
4ee9c684 | 426 | stmtblock_t block; |
4ee9c684 | 427 | tree tmp; |
50ad5fa2 | 428 | tree arg, arg2; |
399aecc1 | 429 | tree *argarray; |
430 | tree fntype; | |
50ad5fa2 | 431 | char *message; |
399aecc1 | 432 | const char *p; |
433 | int line, nargs, i; | |
a5b23678 | 434 | location_t loc; |
4ee9c684 | 435 | |
399aecc1 | 436 | /* Compute the number of extra arguments from the format string. */ |
437 | for (p = msgid, nargs = 0; *p; p++) | |
438 | if (*p == '%') | |
439 | { | |
440 | p++; | |
441 | if (*p != '%') | |
442 | nargs++; | |
443 | } | |
444 | ||
4ee9c684 | 445 | /* The code to generate the error. */ |
446 | gfc_start_block (&block); | |
447 | ||
97c2a00c | 448 | if (where) |
449 | { | |
97c2a00c | 450 | line = LOCATION_LINE (where->lb->location); |
87fda26c | 451 | message = xasprintf ("At line %d of file %s", line, |
452 | where->lb->file->filename); | |
97c2a00c | 453 | } |
454 | else | |
87fda26c | 455 | message = xasprintf ("In file '%s', around line %d", |
456 | gfc_source_file, LOCATION_LINE (input_location) + 1); | |
4ee9c684 | 457 | |
8fb9e3cd | 458 | arg = gfc_build_addr_expr (pchar_type_node, |
459 | gfc_build_localized_cstring_const (message)); | |
434f0922 | 460 | free (message); |
a90fe829 | 461 | |
87fda26c | 462 | message = xasprintf ("%s", _(msgid)); |
8fb9e3cd | 463 | arg2 = gfc_build_addr_expr (pchar_type_node, |
464 | gfc_build_localized_cstring_const (message)); | |
434f0922 | 465 | free (message); |
4ee9c684 | 466 | |
399aecc1 | 467 | /* Build the argument array. */ |
86b32f71 | 468 | argarray = XALLOCAVEC (tree, nargs + 2); |
399aecc1 | 469 | argarray[0] = arg; |
470 | argarray[1] = arg2; | |
399aecc1 | 471 | for (i = 0; i < nargs; i++) |
98d2202b | 472 | argarray[2 + i] = va_arg (ap, tree); |
a90fe829 | 473 | |
da6ffc6d | 474 | /* Build the function call to runtime_(warning,error)_at; because of the |
389dd41b | 475 | variable number of arguments, we can't use build_call_expr_loc dinput_location, |
476 | irectly. */ | |
da6ffc6d | 477 | if (error) |
478 | fntype = TREE_TYPE (gfor_fndecl_runtime_error_at); | |
479 | else | |
480 | fntype = TREE_TYPE (gfor_fndecl_runtime_warning_at); | |
481 | ||
a5b23678 | 482 | loc = where ? where->lb->location : input_location; |
f7715905 | 483 | tmp = fold_build_call_array_loc (loc, TREE_TYPE (fntype), |
484 | fold_build1_loc (loc, ADDR_EXPR, | |
1516b2fb | 485 | build_pointer_type (fntype), |
486 | error | |
487 | ? gfor_fndecl_runtime_error_at | |
488 | : gfor_fndecl_runtime_warning_at), | |
f7715905 | 489 | nargs + 2, argarray); |
4ee9c684 | 490 | gfc_add_expr_to_block (&block, tmp); |
491 | ||
98d2202b | 492 | return gfc_finish_block (&block); |
493 | } | |
494 | ||
495 | ||
a5b23678 | 496 | tree |
497 | gfc_trans_runtime_error (bool error, locus* where, const char* msgid, ...) | |
498 | { | |
499 | va_list ap; | |
500 | tree result; | |
501 | ||
502 | va_start (ap, msgid); | |
503 | result = trans_runtime_error_vararg (error, where, msgid, ap); | |
504 | va_end (ap); | |
505 | return result; | |
506 | } | |
507 | ||
508 | ||
98d2202b | 509 | /* Generate a runtime error if COND is true. */ |
510 | ||
511 | void | |
512 | gfc_trans_runtime_check (bool error, bool once, tree cond, stmtblock_t * pblock, | |
513 | locus * where, const char * msgid, ...) | |
514 | { | |
515 | va_list ap; | |
516 | stmtblock_t block; | |
517 | tree body; | |
518 | tree tmp; | |
519 | tree tmpvar = NULL; | |
520 | ||
521 | if (integer_zerop (cond)) | |
522 | return; | |
523 | ||
524 | if (once) | |
525 | { | |
526 | tmpvar = gfc_create_var (boolean_type_node, "print_warning"); | |
527 | TREE_STATIC (tmpvar) = 1; | |
528 | DECL_INITIAL (tmpvar) = boolean_true_node; | |
529 | gfc_add_expr_to_block (pblock, tmpvar); | |
530 | } | |
531 | ||
532 | gfc_start_block (&block); | |
533 | ||
c83059be | 534 | /* For error, runtime_error_at already implies PRED_NORETURN. */ |
535 | if (!error && once) | |
536 | gfc_add_expr_to_block (&block, build_predict_expr (PRED_FORTRAN_WARN_ONCE, | |
537 | NOT_TAKEN)); | |
538 | ||
98d2202b | 539 | /* The code to generate the error. */ |
540 | va_start (ap, msgid); | |
541 | gfc_add_expr_to_block (&block, | |
a5b23678 | 542 | trans_runtime_error_vararg (error, where, |
543 | msgid, ap)); | |
d526ff88 | 544 | va_end (ap); |
98d2202b | 545 | |
da6ffc6d | 546 | if (once) |
75a70cf9 | 547 | gfc_add_modify (&block, tmpvar, boolean_false_node); |
da6ffc6d | 548 | |
4ee9c684 | 549 | body = gfc_finish_block (&block); |
550 | ||
551 | if (integer_onep (cond)) | |
552 | { | |
553 | gfc_add_expr_to_block (pblock, body); | |
554 | } | |
555 | else | |
556 | { | |
da6ffc6d | 557 | if (once) |
a5b23678 | 558 | cond = fold_build2_loc (where->lb->location, TRUTH_AND_EXPR, |
1516b2fb | 559 | long_integer_type_node, tmpvar, cond); |
da6ffc6d | 560 | else |
561 | cond = fold_convert (long_integer_type_node, cond); | |
562 | ||
a5b23678 | 563 | tmp = fold_build3_loc (where->lb->location, COND_EXPR, void_type_node, |
564 | cond, body, | |
565 | build_empty_stmt (where->lb->location)); | |
4ee9c684 | 566 | gfc_add_expr_to_block (pblock, tmp); |
567 | } | |
568 | } | |
569 | ||
570 | ||
9915365e | 571 | /* Call malloc to allocate size bytes of memory, with special conditions: |
65d23f32 | 572 | + if size == 0, return a malloced area of size 1, |
9915365e | 573 | + if malloc returns NULL, issue a runtime error. */ |
574 | tree | |
575 | gfc_call_malloc (stmtblock_t * block, tree type, tree size) | |
576 | { | |
b9a16870 | 577 | tree tmp, msg, malloc_result, null_result, res, malloc_tree; |
9915365e | 578 | stmtblock_t block2; |
579 | ||
9915365e | 580 | /* Create a variable to hold the result. */ |
e1b3b79b | 581 | res = gfc_create_var (prvoid_type_node, NULL); |
9915365e | 582 | |
3a60b071 | 583 | /* Call malloc. */ |
9915365e | 584 | gfc_start_block (&block2); |
b4330711 | 585 | |
1d5e34dd | 586 | size = fold_convert (size_type_node, size); |
1516b2fb | 587 | size = fold_build2_loc (input_location, MAX_EXPR, size_type_node, size, |
588 | build_int_cst (size_type_node, 1)); | |
b4330711 | 589 | |
b9a16870 | 590 | malloc_tree = builtin_decl_explicit (BUILT_IN_MALLOC); |
75a70cf9 | 591 | gfc_add_modify (&block2, res, |
e1b3b79b | 592 | fold_convert (prvoid_type_node, |
593 | build_call_expr_loc (input_location, | |
b9a16870 | 594 | malloc_tree, 1, size))); |
3a60b071 | 595 | |
596 | /* Optionally check whether malloc was successful. */ | |
597 | if (gfc_option.rtcheck & GFC_RTCHECK_MEM) | |
598 | { | |
1516b2fb | 599 | null_result = fold_build2_loc (input_location, EQ_EXPR, |
600 | boolean_type_node, res, | |
601 | build_int_cst (pvoid_type_node, 0)); | |
3a60b071 | 602 | msg = gfc_build_addr_expr (pchar_type_node, |
603 | gfc_build_localized_cstring_const ("Memory allocation failed")); | |
1516b2fb | 604 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, |
605 | null_result, | |
3a60b071 | 606 | build_call_expr_loc (input_location, |
607 | gfor_fndecl_os_error, 1, msg), | |
608 | build_empty_stmt (input_location)); | |
609 | gfc_add_expr_to_block (&block2, tmp); | |
610 | } | |
611 | ||
9915365e | 612 | malloc_result = gfc_finish_block (&block2); |
b4330711 | 613 | gfc_add_expr_to_block (block, malloc_result); |
9915365e | 614 | |
615 | if (type != NULL) | |
616 | res = fold_convert (type, res); | |
617 | return res; | |
618 | } | |
619 | ||
3a60b071 | 620 | |
a5014d25 | 621 | /* Allocate memory, using an optional status argument. |
a90fe829 | 622 | |
a5014d25 | 623 | This function follows the following pseudo-code: |
624 | ||
625 | void * | |
0eabbfbc | 626 | allocate (size_t size, integer_type stat) |
a5014d25 | 627 | { |
628 | void *newmem; | |
a90fe829 | 629 | |
0eabbfbc | 630 | if (stat requested) |
631 | stat = 0; | |
a5014d25 | 632 | |
65d23f32 | 633 | newmem = malloc (MAX (size, 1)); |
634 | if (newmem == NULL) | |
a5014d25 | 635 | { |
65d23f32 | 636 | if (stat) |
637 | *stat = LIBERROR_ALLOCATION; | |
638 | else | |
326ff1ca | 639 | runtime_error ("Allocation would exceed memory limit"); |
a5014d25 | 640 | } |
a5014d25 | 641 | return newmem; |
642 | } */ | |
297effe4 | 643 | void |
644 | gfc_allocate_using_malloc (stmtblock_t * block, tree pointer, | |
645 | tree size, tree status) | |
a5014d25 | 646 | { |
c83059be | 647 | tree tmp, error_cond; |
648 | stmtblock_t on_error; | |
0eabbfbc | 649 | tree status_type = status ? TREE_TYPE (status) : NULL_TREE; |
a5014d25 | 650 | |
297effe4 | 651 | /* If successful and stat= is given, set status to 0. */ |
0eabbfbc | 652 | if (status != NULL_TREE) |
653 | gfc_add_expr_to_block (block, | |
654 | fold_build2_loc (input_location, MODIFY_EXPR, status_type, | |
655 | status, build_int_cst (status_type, 0))); | |
a5014d25 | 656 | |
a5014d25 | 657 | /* The allocation itself. */ |
1d5e34dd | 658 | size = fold_convert (size_type_node, size); |
297effe4 | 659 | gfc_add_modify (block, pointer, |
660 | fold_convert (TREE_TYPE (pointer), | |
0eabbfbc | 661 | build_call_expr_loc (input_location, |
b9a16870 | 662 | builtin_decl_explicit (BUILT_IN_MALLOC), 1, |
0eabbfbc | 663 | fold_build2_loc (input_location, |
664 | MAX_EXPR, size_type_node, size, | |
665 | build_int_cst (size_type_node, 1))))); | |
666 | ||
667 | /* What to do in case of error. */ | |
c83059be | 668 | gfc_start_block (&on_error); |
0eabbfbc | 669 | if (status != NULL_TREE) |
c83059be | 670 | { |
671 | gfc_add_expr_to_block (&on_error, | |
672 | build_predict_expr (PRED_FORTRAN_FAIL_ALLOC, | |
673 | NOT_TAKEN)); | |
674 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, status_type, status, | |
675 | build_int_cst (status_type, LIBERROR_ALLOCATION)); | |
676 | gfc_add_expr_to_block (&on_error, tmp); | |
677 | } | |
7b186db6 | 678 | else |
c83059be | 679 | { |
680 | /* Here, os_error already implies PRED_NORETURN. */ | |
681 | tmp = build_call_expr_loc (input_location, gfor_fndecl_os_error, 1, | |
0eabbfbc | 682 | gfc_build_addr_expr (pchar_type_node, |
683 | gfc_build_localized_cstring_const | |
c83059be | 684 | ("Allocation would exceed memory limit"))); |
685 | gfc_add_expr_to_block (&on_error, tmp); | |
686 | } | |
a5014d25 | 687 | |
297effe4 | 688 | error_cond = fold_build2_loc (input_location, EQ_EXPR, |
689 | boolean_type_node, pointer, | |
690 | build_int_cst (prvoid_type_node, 0)); | |
1516b2fb | 691 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, |
c83059be | 692 | error_cond, gfc_finish_block (&on_error), |
297effe4 | 693 | build_empty_stmt (input_location)); |
a5014d25 | 694 | |
297effe4 | 695 | gfc_add_expr_to_block (block, tmp); |
a5014d25 | 696 | } |
697 | ||
698 | ||
0eabbfbc | 699 | /* Allocate memory, using an optional status argument. |
a90fe829 | 700 | |
0eabbfbc | 701 | This function follows the following pseudo-code: |
702 | ||
703 | void * | |
8f89e9c9 | 704 | allocate (size_t size, void** token, int *stat, char* errmsg, int errlen) |
0eabbfbc | 705 | { |
706 | void *newmem; | |
8f89e9c9 | 707 | |
708 | newmem = _caf_register (size, regtype, token, &stat, errmsg, errlen); | |
0eabbfbc | 709 | return newmem; |
710 | } */ | |
8f89e9c9 | 711 | static void |
297effe4 | 712 | gfc_allocate_using_lib (stmtblock_t * block, tree pointer, tree size, |
0c10bedd | 713 | tree token, tree status, tree errmsg, tree errlen, |
bd47f0bc | 714 | bool lock_var, bool event_var) |
0eabbfbc | 715 | { |
297effe4 | 716 | tree tmp, pstat; |
0eabbfbc | 717 | |
8f89e9c9 | 718 | gcc_assert (token != NULL_TREE); |
719 | ||
0eabbfbc | 720 | /* The allocation itself. */ |
721 | if (status == NULL_TREE) | |
722 | pstat = null_pointer_node; | |
723 | else | |
724 | pstat = gfc_build_addr_expr (NULL_TREE, status); | |
725 | ||
726 | if (errmsg == NULL_TREE) | |
727 | { | |
728 | gcc_assert(errlen == NULL_TREE); | |
729 | errmsg = null_pointer_node; | |
730 | errlen = build_int_cst (integer_type_node, 0); | |
731 | } | |
732 | ||
1d5e34dd | 733 | size = fold_convert (size_type_node, size); |
297effe4 | 734 | tmp = build_call_expr_loc (input_location, |
735 | gfor_fndecl_caf_register, 6, | |
736 | fold_build2_loc (input_location, | |
0eabbfbc | 737 | MAX_EXPR, size_type_node, size, |
738 | build_int_cst (size_type_node, 1)), | |
297effe4 | 739 | build_int_cst (integer_type_node, |
0c10bedd | 740 | lock_var ? GFC_CAF_LOCK_ALLOC |
bd47f0bc | 741 | : event_var ? GFC_CAF_EVENT_ALLOC |
742 | : GFC_CAF_COARRAY_ALLOC), | |
8f89e9c9 | 743 | token, pstat, errmsg, errlen); |
0eabbfbc | 744 | |
297effe4 | 745 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
746 | TREE_TYPE (pointer), pointer, | |
747 | fold_convert ( TREE_TYPE (pointer), tmp)); | |
748 | gfc_add_expr_to_block (block, tmp); | |
5118f067 | 749 | |
750 | /* It guarantees memory consistency within the same segment */ | |
751 | tmp = gfc_build_string_const (strlen ("memory")+1, "memory"), | |
752 | tmp = build5_loc (input_location, ASM_EXPR, void_type_node, | |
753 | gfc_build_string_const (1, ""), NULL_TREE, NULL_TREE, | |
754 | tree_cons (NULL_TREE, tmp, NULL_TREE), NULL_TREE); | |
755 | ASM_VOLATILE_P (tmp) = 1; | |
756 | gfc_add_expr_to_block (block, tmp); | |
0eabbfbc | 757 | } |
758 | ||
759 | ||
a5014d25 | 760 | /* Generate code for an ALLOCATE statement when the argument is an |
7b186db6 | 761 | allocatable variable. If the variable is currently allocated, it is an |
a5014d25 | 762 | error to allocate it again. |
a90fe829 | 763 | |
a5014d25 | 764 | This function follows the following pseudo-code: |
a90fe829 | 765 | |
a5014d25 | 766 | void * |
0eabbfbc | 767 | allocate_allocatable (void *mem, size_t size, integer_type stat) |
a5014d25 | 768 | { |
769 | if (mem == NULL) | |
770 | return allocate (size, stat); | |
771 | else | |
772 | { | |
773 | if (stat) | |
0eabbfbc | 774 | stat = LIBERROR_ALLOCATION; |
a5014d25 | 775 | else |
bcc41e51 | 776 | runtime_error ("Attempting to allocate already allocated variable"); |
53169279 | 777 | } |
98d2202b | 778 | } |
a90fe829 | 779 | |
98d2202b | 780 | expr must be set to the original expression being allocated for its locus |
781 | and variable name in case a runtime error has to be printed. */ | |
297effe4 | 782 | void |
8f89e9c9 | 783 | gfc_allocate_allocatable (stmtblock_t * block, tree mem, tree size, tree token, |
d0d776fb | 784 | tree status, tree errmsg, tree errlen, tree label_finish, |
785 | gfc_expr* expr) | |
a5014d25 | 786 | { |
787 | stmtblock_t alloc_block; | |
297effe4 | 788 | tree tmp, null_mem, alloc, error; |
a5014d25 | 789 | tree type = TREE_TYPE (mem); |
790 | ||
1d5e34dd | 791 | size = fold_convert (size_type_node, size); |
c9dc79a6 | 792 | null_mem = gfc_unlikely (fold_build2_loc (input_location, NE_EXPR, |
793 | boolean_type_node, mem, | |
c83059be | 794 | build_int_cst (type, 0)), |
795 | PRED_FORTRAN_FAIL_ALLOC); | |
a5014d25 | 796 | |
0eabbfbc | 797 | /* If mem is NULL, we call gfc_allocate_using_malloc or |
798 | gfc_allocate_using_lib. */ | |
a5014d25 | 799 | gfc_start_block (&alloc_block); |
0eabbfbc | 800 | |
4fe73152 | 801 | if (flag_coarray == GFC_FCOARRAY_LIB |
0eabbfbc | 802 | && gfc_expr_attr (expr).codimension) |
d0d776fb | 803 | { |
804 | tree cond; | |
0c10bedd | 805 | bool lock_var = expr->ts.type == BT_DERIVED |
806 | && expr->ts.u.derived->from_intmod | |
807 | == INTMOD_ISO_FORTRAN_ENV | |
808 | && expr->ts.u.derived->intmod_sym_id | |
809 | == ISOFORTRAN_LOCK_TYPE; | |
bd47f0bc | 810 | bool event_var = expr->ts.type == BT_DERIVED |
811 | && expr->ts.u.derived->from_intmod | |
812 | == INTMOD_ISO_FORTRAN_ENV | |
813 | && expr->ts.u.derived->intmod_sym_id | |
814 | == ISOFORTRAN_EVENT_TYPE; | |
0c10bedd | 815 | /* In the front end, we represent the lock variable as pointer. However, |
816 | the FE only passes the pointer around and leaves the actual | |
817 | representation to the library. Hence, we have to convert back to the | |
818 | number of elements. */ | |
819 | if (lock_var) | |
820 | size = fold_build2_loc (input_location, TRUNC_DIV_EXPR, size_type_node, | |
821 | size, TYPE_SIZE_UNIT (ptr_type_node)); | |
d0d776fb | 822 | |
823 | gfc_allocate_using_lib (&alloc_block, mem, size, token, status, | |
bd47f0bc | 824 | errmsg, errlen, lock_var, event_var); |
0c10bedd | 825 | |
d0d776fb | 826 | if (status != NULL_TREE) |
827 | { | |
828 | TREE_USED (label_finish) = 1; | |
829 | tmp = build1_v (GOTO_EXPR, label_finish); | |
830 | cond = fold_build2_loc (input_location, NE_EXPR, boolean_type_node, | |
831 | status, build_zero_cst (TREE_TYPE (status))); | |
832 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, | |
c83059be | 833 | gfc_unlikely (cond, PRED_FORTRAN_FAIL_ALLOC), |
834 | tmp, build_empty_stmt (input_location)); | |
d0d776fb | 835 | gfc_add_expr_to_block (&alloc_block, tmp); |
836 | } | |
837 | } | |
0eabbfbc | 838 | else |
297effe4 | 839 | gfc_allocate_using_malloc (&alloc_block, mem, size, status); |
7b186db6 | 840 | |
a5014d25 | 841 | alloc = gfc_finish_block (&alloc_block); |
842 | ||
7b186db6 | 843 | /* If mem is not NULL, we issue a runtime error or set the |
844 | status variable. */ | |
98d2202b | 845 | if (expr) |
846 | { | |
847 | tree varname; | |
848 | ||
849 | gcc_assert (expr->expr_type == EXPR_VARIABLE && expr->symtree); | |
850 | varname = gfc_build_cstring_const (expr->symtree->name); | |
851 | varname = gfc_build_addr_expr (pchar_type_node, varname); | |
852 | ||
853 | error = gfc_trans_runtime_error (true, &expr->where, | |
854 | "Attempting to allocate already" | |
bcc41e51 | 855 | " allocated variable '%s'", |
98d2202b | 856 | varname); |
857 | } | |
858 | else | |
859 | error = gfc_trans_runtime_error (true, NULL, | |
860 | "Attempting to allocate already allocated" | |
bf776685 | 861 | " variable"); |
a5014d25 | 862 | |
0eabbfbc | 863 | if (status != NULL_TREE) |
a5014d25 | 864 | { |
0eabbfbc | 865 | tree status_type = TREE_TYPE (status); |
a5014d25 | 866 | |
297effe4 | 867 | error = fold_build2_loc (input_location, MODIFY_EXPR, status_type, |
868 | status, build_int_cst (status_type, LIBERROR_ALLOCATION)); | |
a5014d25 | 869 | } |
870 | ||
1516b2fb | 871 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, null_mem, |
c9dc79a6 | 872 | error, alloc); |
a5014d25 | 873 | gfc_add_expr_to_block (block, tmp); |
a5014d25 | 874 | } |
875 | ||
9915365e | 876 | |
130d2faa | 877 | /* Free a given variable. */ |
1d5e34dd | 878 | |
9915365e | 879 | tree |
880 | gfc_call_free (tree var) | |
881 | { | |
130d2faa | 882 | return build_call_expr_loc (input_location, |
b9a16870 | 883 | builtin_decl_explicit (BUILT_IN_FREE), |
130d2faa | 884 | 1, fold_convert (pvoid_type_node, var)); |
9915365e | 885 | } |
886 | ||
887 | ||
afb69dbf | 888 | /* Build a call to a FINAL procedure, which finalizes "var". */ |
889 | ||
890 | static tree | |
891 | gfc_build_final_call (gfc_typespec ts, gfc_expr *final_wrapper, gfc_expr *var, | |
892 | bool fini_coarray, gfc_expr *class_size) | |
893 | { | |
894 | stmtblock_t block; | |
895 | gfc_se se; | |
896 | tree final_fndecl, array, size, tmp; | |
897 | symbol_attribute attr; | |
898 | ||
899 | gcc_assert (final_wrapper->expr_type == EXPR_VARIABLE); | |
900 | gcc_assert (var); | |
901 | ||
2dfe32eb | 902 | gfc_start_block (&block); |
afb69dbf | 903 | gfc_init_se (&se, NULL); |
904 | gfc_conv_expr (&se, final_wrapper); | |
905 | final_fndecl = se.expr; | |
906 | if (POINTER_TYPE_P (TREE_TYPE (final_fndecl))) | |
907 | final_fndecl = build_fold_indirect_ref_loc (input_location, final_fndecl); | |
908 | ||
909 | if (ts.type == BT_DERIVED) | |
910 | { | |
911 | tree elem_size; | |
912 | ||
913 | gcc_assert (!class_size); | |
914 | elem_size = gfc_typenode_for_spec (&ts); | |
915 | elem_size = TYPE_SIZE_UNIT (elem_size); | |
916 | size = fold_convert (gfc_array_index_type, elem_size); | |
917 | ||
918 | gfc_init_se (&se, NULL); | |
919 | se.want_pointer = 1; | |
920 | if (var->rank) | |
921 | { | |
922 | se.descriptor_only = 1; | |
923 | gfc_conv_expr_descriptor (&se, var); | |
924 | array = se.expr; | |
925 | } | |
926 | else | |
927 | { | |
928 | gfc_conv_expr (&se, var); | |
929 | gcc_assert (se.pre.head == NULL_TREE && se.post.head == NULL_TREE); | |
930 | array = se.expr; | |
931 | ||
932 | /* No copy back needed, hence set attr's allocatable/pointer | |
933 | to zero. */ | |
934 | gfc_clear_attr (&attr); | |
935 | gfc_init_se (&se, NULL); | |
936 | array = gfc_conv_scalar_to_descriptor (&se, array, attr); | |
937 | gcc_assert (se.post.head == NULL_TREE); | |
938 | } | |
939 | } | |
940 | else | |
941 | { | |
942 | gfc_expr *array_expr; | |
943 | gcc_assert (class_size); | |
944 | gfc_init_se (&se, NULL); | |
945 | gfc_conv_expr (&se, class_size); | |
44b1f833 | 946 | gfc_add_block_to_block (&block, &se.pre); |
947 | gcc_assert (se.post.head == NULL_TREE); | |
afb69dbf | 948 | size = se.expr; |
949 | ||
950 | array_expr = gfc_copy_expr (var); | |
951 | gfc_init_se (&se, NULL); | |
952 | se.want_pointer = 1; | |
953 | if (array_expr->rank) | |
954 | { | |
955 | gfc_add_class_array_ref (array_expr); | |
956 | se.descriptor_only = 1; | |
957 | gfc_conv_expr_descriptor (&se, array_expr); | |
958 | array = se.expr; | |
959 | } | |
960 | else | |
961 | { | |
962 | gfc_add_data_component (array_expr); | |
963 | gfc_conv_expr (&se, array_expr); | |
44b1f833 | 964 | gfc_add_block_to_block (&block, &se.pre); |
965 | gcc_assert (se.post.head == NULL_TREE); | |
afb69dbf | 966 | array = se.expr; |
967 | if (TREE_CODE (array) == ADDR_EXPR | |
968 | && POINTER_TYPE_P (TREE_TYPE (TREE_OPERAND (array, 0)))) | |
969 | tmp = TREE_OPERAND (array, 0); | |
970 | ||
971 | if (!gfc_is_coarray (array_expr)) | |
972 | { | |
973 | /* No copy back needed, hence set attr's allocatable/pointer | |
974 | to zero. */ | |
975 | gfc_clear_attr (&attr); | |
976 | gfc_init_se (&se, NULL); | |
977 | array = gfc_conv_scalar_to_descriptor (&se, array, attr); | |
978 | } | |
979 | gcc_assert (se.post.head == NULL_TREE); | |
980 | } | |
981 | gfc_free_expr (array_expr); | |
982 | } | |
983 | ||
984 | if (!POINTER_TYPE_P (TREE_TYPE (array))) | |
985 | array = gfc_build_addr_expr (NULL, array); | |
986 | ||
afb69dbf | 987 | gfc_add_block_to_block (&block, &se.pre); |
988 | tmp = build_call_expr_loc (input_location, | |
989 | final_fndecl, 3, array, | |
990 | size, fini_coarray ? boolean_true_node | |
991 | : boolean_false_node); | |
992 | gfc_add_block_to_block (&block, &se.post); | |
993 | gfc_add_expr_to_block (&block, tmp); | |
994 | return gfc_finish_block (&block); | |
995 | } | |
996 | ||
997 | ||
77405744 | 998 | bool |
999 | gfc_add_comp_finalizer_call (stmtblock_t *block, tree decl, gfc_component *comp, | |
1000 | bool fini_coarray) | |
1001 | { | |
1002 | gfc_se se; | |
1003 | stmtblock_t block2; | |
1004 | tree final_fndecl, size, array, tmp, cond; | |
1005 | symbol_attribute attr; | |
1006 | gfc_expr *final_expr = NULL; | |
1007 | ||
1008 | if (comp->ts.type != BT_DERIVED && comp->ts.type != BT_CLASS) | |
1009 | return false; | |
1010 | ||
1011 | gfc_init_block (&block2); | |
1012 | ||
1013 | if (comp->ts.type == BT_DERIVED) | |
1014 | { | |
1015 | if (comp->attr.pointer) | |
1016 | return false; | |
1017 | ||
1018 | gfc_is_finalizable (comp->ts.u.derived, &final_expr); | |
1019 | if (!final_expr) | |
1020 | return false; | |
1021 | ||
1022 | gfc_init_se (&se, NULL); | |
1023 | gfc_conv_expr (&se, final_expr); | |
1024 | final_fndecl = se.expr; | |
1025 | size = gfc_typenode_for_spec (&comp->ts); | |
1026 | size = TYPE_SIZE_UNIT (size); | |
1027 | size = fold_convert (gfc_array_index_type, size); | |
1028 | ||
1029 | array = decl; | |
1030 | } | |
1031 | else /* comp->ts.type == BT_CLASS. */ | |
1032 | { | |
1033 | if (CLASS_DATA (comp)->attr.class_pointer) | |
1034 | return false; | |
1035 | ||
1036 | gfc_is_finalizable (CLASS_DATA (comp)->ts.u.derived, &final_expr); | |
535b0484 | 1037 | final_fndecl = gfc_class_vtab_final_get (decl); |
1038 | size = gfc_class_vtab_size_get (decl); | |
77405744 | 1039 | array = gfc_class_data_get (decl); |
1040 | } | |
1041 | ||
1042 | if (comp->attr.allocatable | |
1043 | || (comp->ts.type == BT_CLASS && CLASS_DATA (comp)->attr.allocatable)) | |
1044 | { | |
1045 | tmp = GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (array)) | |
1046 | ? gfc_conv_descriptor_data_get (array) : array; | |
1047 | cond = fold_build2_loc (input_location, NE_EXPR, boolean_type_node, | |
1048 | tmp, fold_convert (TREE_TYPE (tmp), | |
1049 | null_pointer_node)); | |
1050 | } | |
1051 | else | |
1052 | cond = boolean_true_node; | |
1053 | ||
1054 | if (!GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (array))) | |
1055 | { | |
1056 | gfc_clear_attr (&attr); | |
1057 | gfc_init_se (&se, NULL); | |
1058 | array = gfc_conv_scalar_to_descriptor (&se, array, attr); | |
1059 | gfc_add_block_to_block (&block2, &se.pre); | |
1060 | gcc_assert (se.post.head == NULL_TREE); | |
1061 | } | |
1062 | ||
1063 | if (!POINTER_TYPE_P (TREE_TYPE (array))) | |
1064 | array = gfc_build_addr_expr (NULL, array); | |
1065 | ||
1066 | if (!final_expr) | |
1067 | { | |
1068 | tmp = fold_build2_loc (input_location, NE_EXPR, boolean_type_node, | |
1069 | final_fndecl, | |
1070 | fold_convert (TREE_TYPE (final_fndecl), | |
1071 | null_pointer_node)); | |
1072 | cond = fold_build2_loc (input_location, TRUTH_ANDIF_EXPR, | |
1073 | boolean_type_node, cond, tmp); | |
1074 | } | |
1075 | ||
1076 | if (POINTER_TYPE_P (TREE_TYPE (final_fndecl))) | |
1077 | final_fndecl = build_fold_indirect_ref_loc (input_location, final_fndecl); | |
1078 | ||
1079 | tmp = build_call_expr_loc (input_location, | |
1080 | final_fndecl, 3, array, | |
1081 | size, fini_coarray ? boolean_true_node | |
1082 | : boolean_false_node); | |
1083 | gfc_add_expr_to_block (&block2, tmp); | |
1084 | tmp = gfc_finish_block (&block2); | |
1085 | ||
1086 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, cond, tmp, | |
1087 | build_empty_stmt (input_location)); | |
1088 | gfc_add_expr_to_block (block, tmp); | |
1089 | ||
1090 | return true; | |
1091 | } | |
1092 | ||
1093 | ||
afb69dbf | 1094 | /* Add a call to the finalizer, using the passed *expr. Returns |
1095 | true when a finalizer call has been inserted. */ | |
1096 | ||
1097 | bool | |
1098 | gfc_add_finalizer_call (stmtblock_t *block, gfc_expr *expr2) | |
1099 | { | |
1100 | tree tmp; | |
1101 | gfc_ref *ref; | |
1102 | gfc_expr *expr; | |
1103 | gfc_expr *final_expr = NULL; | |
1104 | gfc_expr *elem_size = NULL; | |
1105 | bool has_finalizer = false; | |
1106 | ||
1107 | if (!expr2 || (expr2->ts.type != BT_DERIVED && expr2->ts.type != BT_CLASS)) | |
1108 | return false; | |
1109 | ||
1110 | if (expr2->ts.type == BT_DERIVED) | |
1111 | { | |
1112 | gfc_is_finalizable (expr2->ts.u.derived, &final_expr); | |
1113 | if (!final_expr) | |
1114 | return false; | |
1115 | } | |
1116 | ||
1117 | /* If we have a class array, we need go back to the class | |
293d72e0 | 1118 | container. */ |
afb69dbf | 1119 | expr = gfc_copy_expr (expr2); |
1120 | ||
1121 | if (expr->ref && expr->ref->next && !expr->ref->next->next | |
1122 | && expr->ref->next->type == REF_ARRAY | |
1123 | && expr->ref->type == REF_COMPONENT | |
1124 | && strcmp (expr->ref->u.c.component->name, "_data") == 0) | |
1125 | { | |
1126 | gfc_free_ref_list (expr->ref); | |
1127 | expr->ref = NULL; | |
1128 | } | |
1129 | else | |
1130 | for (ref = expr->ref; ref; ref = ref->next) | |
1131 | if (ref->next && ref->next->next && !ref->next->next->next | |
1132 | && ref->next->next->type == REF_ARRAY | |
1133 | && ref->next->type == REF_COMPONENT | |
1134 | && strcmp (ref->next->u.c.component->name, "_data") == 0) | |
1135 | { | |
1136 | gfc_free_ref_list (ref->next); | |
1137 | ref->next = NULL; | |
1138 | } | |
1139 | ||
1140 | if (expr->ts.type == BT_CLASS) | |
1141 | { | |
1142 | has_finalizer = gfc_is_finalizable (expr->ts.u.derived, NULL); | |
1143 | ||
1144 | if (!expr2->rank && !expr2->ref && CLASS_DATA (expr2->symtree->n.sym)->as) | |
1145 | expr->rank = CLASS_DATA (expr2->symtree->n.sym)->as->rank; | |
1146 | ||
1147 | final_expr = gfc_copy_expr (expr); | |
1148 | gfc_add_vptr_component (final_expr); | |
1149 | gfc_add_component_ref (final_expr, "_final"); | |
1150 | ||
1151 | elem_size = gfc_copy_expr (expr); | |
1152 | gfc_add_vptr_component (elem_size); | |
1153 | gfc_add_component_ref (elem_size, "_size"); | |
1154 | } | |
1155 | ||
1156 | gcc_assert (final_expr->expr_type == EXPR_VARIABLE); | |
1157 | ||
1158 | tmp = gfc_build_final_call (expr->ts, final_expr, expr, | |
1159 | false, elem_size); | |
1160 | ||
1161 | if (expr->ts.type == BT_CLASS && !has_finalizer) | |
1162 | { | |
1163 | tree cond; | |
1164 | gfc_se se; | |
1165 | ||
1166 | gfc_init_se (&se, NULL); | |
1167 | se.want_pointer = 1; | |
1168 | gfc_conv_expr (&se, final_expr); | |
1169 | cond = fold_build2_loc (input_location, NE_EXPR, boolean_type_node, | |
1170 | se.expr, build_int_cst (TREE_TYPE (se.expr), 0)); | |
1171 | ||
1172 | /* For CLASS(*) not only sym->_vtab->_final can be NULL | |
1173 | but already sym->_vtab itself. */ | |
1174 | if (UNLIMITED_POLY (expr)) | |
1175 | { | |
1176 | tree cond2; | |
1177 | gfc_expr *vptr_expr; | |
1178 | ||
1179 | vptr_expr = gfc_copy_expr (expr); | |
1180 | gfc_add_vptr_component (vptr_expr); | |
1181 | ||
1182 | gfc_init_se (&se, NULL); | |
1183 | se.want_pointer = 1; | |
1184 | gfc_conv_expr (&se, vptr_expr); | |
1185 | gfc_free_expr (vptr_expr); | |
1186 | ||
1187 | cond2 = fold_build2_loc (input_location, NE_EXPR, boolean_type_node, | |
1188 | se.expr, | |
1189 | build_int_cst (TREE_TYPE (se.expr), 0)); | |
1190 | cond = fold_build2_loc (input_location, TRUTH_ANDIF_EXPR, | |
1191 | boolean_type_node, cond2, cond); | |
1192 | } | |
1193 | ||
1194 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, | |
1195 | cond, tmp, build_empty_stmt (input_location)); | |
1196 | } | |
1197 | ||
1198 | gfc_add_expr_to_block (block, tmp); | |
1199 | ||
1200 | return true; | |
1201 | } | |
1202 | ||
a5014d25 | 1203 | |
1204 | /* User-deallocate; we emit the code directly from the front-end, and the | |
1205 | logic is the same as the previous library function: | |
1206 | ||
1207 | void | |
1208 | deallocate (void *pointer, GFC_INTEGER_4 * stat) | |
1209 | { | |
1210 | if (!pointer) | |
1211 | { | |
1212 | if (stat) | |
1213 | *stat = 1; | |
1214 | else | |
1215 | runtime_error ("Attempt to DEALLOCATE unallocated memory."); | |
1216 | } | |
1217 | else | |
1218 | { | |
1219 | free (pointer); | |
1220 | if (stat) | |
1221 | *stat = 0; | |
1222 | } | |
1223 | } | |
1224 | ||
1a2798ac | 1225 | In this front-end version, status doesn't have to be GFC_INTEGER_4. |
1226 | Moreover, if CAN_FAIL is true, then we will not emit a runtime error, | |
1227 | even when no status variable is passed to us (this is used for | |
1228 | unconditional deallocation generated by the front-end at end of | |
1229 | each procedure). | |
a90fe829 | 1230 | |
98d2202b | 1231 | If a runtime-message is possible, `expr' must point to the original |
d0d776fb | 1232 | expression being deallocated for its locus and variable name. |
1233 | ||
1234 | For coarrays, "pointer" must be the array descriptor and not its | |
1235 | "data" component. */ | |
a5014d25 | 1236 | tree |
d0d776fb | 1237 | gfc_deallocate_with_status (tree pointer, tree status, tree errmsg, |
1238 | tree errlen, tree label_finish, | |
1239 | bool can_fail, gfc_expr* expr, bool coarray) | |
a5014d25 | 1240 | { |
1241 | stmtblock_t null, non_null; | |
98d2202b | 1242 | tree cond, tmp, error; |
d0d776fb | 1243 | tree status_type = NULL_TREE; |
1244 | tree caf_decl = NULL_TREE; | |
1245 | ||
1246 | if (coarray) | |
1247 | { | |
1248 | gcc_assert (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (pointer))); | |
1249 | caf_decl = pointer; | |
1250 | pointer = gfc_conv_descriptor_data_get (caf_decl); | |
1251 | STRIP_NOPS (pointer); | |
1252 | } | |
a5014d25 | 1253 | |
1516b2fb | 1254 | cond = fold_build2_loc (input_location, EQ_EXPR, boolean_type_node, pointer, |
1255 | build_int_cst (TREE_TYPE (pointer), 0)); | |
a5014d25 | 1256 | |
1257 | /* When POINTER is NULL, we set STATUS to 1 if it's present, otherwise | |
1258 | we emit a runtime error. */ | |
1259 | gfc_start_block (&null); | |
1260 | if (!can_fail) | |
1261 | { | |
98d2202b | 1262 | tree varname; |
1263 | ||
1264 | gcc_assert (expr && expr->expr_type == EXPR_VARIABLE && expr->symtree); | |
1265 | ||
1266 | varname = gfc_build_cstring_const (expr->symtree->name); | |
1267 | varname = gfc_build_addr_expr (pchar_type_node, varname); | |
1268 | ||
1269 | error = gfc_trans_runtime_error (true, &expr->where, | |
1270 | "Attempt to DEALLOCATE unallocated '%s'", | |
1271 | varname); | |
a5014d25 | 1272 | } |
1273 | else | |
e60a6f7b | 1274 | error = build_empty_stmt (input_location); |
a5014d25 | 1275 | |
1276 | if (status != NULL_TREE && !integer_zerop (status)) | |
1277 | { | |
a5014d25 | 1278 | tree cond2; |
1279 | ||
d0d776fb | 1280 | status_type = TREE_TYPE (TREE_TYPE (status)); |
1516b2fb | 1281 | cond2 = fold_build2_loc (input_location, NE_EXPR, boolean_type_node, |
1282 | status, build_int_cst (TREE_TYPE (status), 0)); | |
1283 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, status_type, | |
1284 | fold_build1_loc (input_location, INDIRECT_REF, | |
1285 | status_type, status), | |
1286 | build_int_cst (status_type, 1)); | |
1287 | error = fold_build3_loc (input_location, COND_EXPR, void_type_node, | |
1288 | cond2, tmp, error); | |
a5014d25 | 1289 | } |
1290 | ||
1291 | gfc_add_expr_to_block (&null, error); | |
1292 | ||
1293 | /* When POINTER is not NULL, we free it. */ | |
1294 | gfc_start_block (&non_null); | |
afb69dbf | 1295 | gfc_add_finalizer_call (&non_null, expr); |
4fe73152 | 1296 | if (!coarray || flag_coarray != GFC_FCOARRAY_LIB) |
d0d776fb | 1297 | { |
1298 | tmp = build_call_expr_loc (input_location, | |
1299 | builtin_decl_explicit (BUILT_IN_FREE), 1, | |
1300 | fold_convert (pvoid_type_node, pointer)); | |
1301 | gfc_add_expr_to_block (&non_null, tmp); | |
2bf70a2a | 1302 | |
d0d776fb | 1303 | if (status != NULL_TREE && !integer_zerop (status)) |
1304 | { | |
1305 | /* We set STATUS to zero if it is present. */ | |
1306 | tree status_type = TREE_TYPE (TREE_TYPE (status)); | |
1307 | tree cond2; | |
1308 | ||
1309 | cond2 = fold_build2_loc (input_location, NE_EXPR, boolean_type_node, | |
1310 | status, | |
1311 | build_int_cst (TREE_TYPE (status), 0)); | |
1312 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, status_type, | |
1313 | fold_build1_loc (input_location, INDIRECT_REF, | |
1314 | status_type, status), | |
1315 | build_int_cst (status_type, 0)); | |
1316 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, | |
c83059be | 1317 | gfc_unlikely (cond2, PRED_FORTRAN_FAIL_ALLOC), |
1318 | tmp, build_empty_stmt (input_location)); | |
d0d776fb | 1319 | gfc_add_expr_to_block (&non_null, tmp); |
1320 | } | |
1321 | } | |
1322 | else | |
2bf70a2a | 1323 | { |
d0d776fb | 1324 | tree caf_type, token, cond2; |
1325 | tree pstat = null_pointer_node; | |
2bf70a2a | 1326 | |
d0d776fb | 1327 | if (errmsg == NULL_TREE) |
1328 | { | |
1329 | gcc_assert (errlen == NULL_TREE); | |
1330 | errmsg = null_pointer_node; | |
1331 | errlen = build_zero_cst (integer_type_node); | |
1332 | } | |
1333 | else | |
1334 | { | |
1335 | gcc_assert (errlen != NULL_TREE); | |
1336 | if (!POINTER_TYPE_P (TREE_TYPE (errmsg))) | |
1337 | errmsg = gfc_build_addr_expr (NULL_TREE, errmsg); | |
1338 | } | |
1339 | ||
1340 | caf_type = TREE_TYPE (caf_decl); | |
1341 | ||
1342 | if (status != NULL_TREE && !integer_zerop (status)) | |
1343 | { | |
1344 | gcc_assert (status_type == integer_type_node); | |
1345 | pstat = status; | |
1346 | } | |
1347 | ||
1348 | if (GFC_DESCRIPTOR_TYPE_P (caf_type) | |
1349 | && GFC_TYPE_ARRAY_AKIND (caf_type) == GFC_ARRAY_ALLOCATABLE) | |
1350 | token = gfc_conv_descriptor_token (caf_decl); | |
1351 | else if (DECL_LANG_SPECIFIC (caf_decl) | |
1352 | && GFC_DECL_TOKEN (caf_decl) != NULL_TREE) | |
1353 | token = GFC_DECL_TOKEN (caf_decl); | |
1354 | else | |
1355 | { | |
1356 | gcc_assert (GFC_ARRAY_TYPE_P (caf_type) | |
1357 | && GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) != NULL_TREE); | |
1358 | token = GFC_TYPE_ARRAY_CAF_TOKEN (caf_type); | |
1359 | } | |
1360 | ||
1361 | token = gfc_build_addr_expr (NULL_TREE, token); | |
1362 | tmp = build_call_expr_loc (input_location, | |
1363 | gfor_fndecl_caf_deregister, 4, | |
1364 | token, pstat, errmsg, errlen); | |
2bf70a2a | 1365 | gfc_add_expr_to_block (&non_null, tmp); |
d0d776fb | 1366 | |
5118f067 | 1367 | /* It guarantees memory consistency within the same segment */ |
1368 | tmp = gfc_build_string_const (strlen ("memory")+1, "memory"), | |
1369 | tmp = build5_loc (input_location, ASM_EXPR, void_type_node, | |
1370 | gfc_build_string_const (1, ""), NULL_TREE, NULL_TREE, | |
1371 | tree_cons (NULL_TREE, tmp, NULL_TREE), NULL_TREE); | |
1372 | ASM_VOLATILE_P (tmp) = 1; | |
1373 | gfc_add_expr_to_block (&non_null, tmp); | |
1374 | ||
d0d776fb | 1375 | if (status != NULL_TREE) |
1376 | { | |
1377 | tree stat = build_fold_indirect_ref_loc (input_location, status); | |
1378 | ||
1379 | TREE_USED (label_finish) = 1; | |
1380 | tmp = build1_v (GOTO_EXPR, label_finish); | |
1381 | cond2 = fold_build2_loc (input_location, NE_EXPR, boolean_type_node, | |
1382 | stat, build_zero_cst (TREE_TYPE (stat))); | |
1383 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, | |
c83059be | 1384 | gfc_unlikely (cond2, PRED_FORTRAN_FAIL_ALLOC), |
1385 | tmp, build_empty_stmt (input_location)); | |
d0d776fb | 1386 | gfc_add_expr_to_block (&non_null, tmp); |
1387 | } | |
2bf70a2a | 1388 | } |
1389 | ||
1390 | return fold_build3_loc (input_location, COND_EXPR, void_type_node, cond, | |
1391 | gfc_finish_block (&null), | |
1392 | gfc_finish_block (&non_null)); | |
1393 | } | |
1394 | ||
1395 | ||
1396 | /* Generate code for deallocation of allocatable scalars (variables or | |
1397 | components). Before the object itself is freed, any allocatable | |
1398 | subcomponents are being deallocated. */ | |
1399 | ||
1400 | tree | |
1401 | gfc_deallocate_scalar_with_status (tree pointer, tree status, bool can_fail, | |
1402 | gfc_expr* expr, gfc_typespec ts) | |
1403 | { | |
1404 | stmtblock_t null, non_null; | |
1405 | tree cond, tmp, error; | |
afb69dbf | 1406 | bool finalizable; |
2bf70a2a | 1407 | |
1408 | cond = fold_build2_loc (input_location, EQ_EXPR, boolean_type_node, pointer, | |
1409 | build_int_cst (TREE_TYPE (pointer), 0)); | |
1410 | ||
1411 | /* When POINTER is NULL, we set STATUS to 1 if it's present, otherwise | |
1412 | we emit a runtime error. */ | |
1413 | gfc_start_block (&null); | |
1414 | if (!can_fail) | |
1415 | { | |
1416 | tree varname; | |
1417 | ||
1418 | gcc_assert (expr && expr->expr_type == EXPR_VARIABLE && expr->symtree); | |
1419 | ||
1420 | varname = gfc_build_cstring_const (expr->symtree->name); | |
1421 | varname = gfc_build_addr_expr (pchar_type_node, varname); | |
1422 | ||
1423 | error = gfc_trans_runtime_error (true, &expr->where, | |
1424 | "Attempt to DEALLOCATE unallocated '%s'", | |
1425 | varname); | |
1426 | } | |
1427 | else | |
1428 | error = build_empty_stmt (input_location); | |
1429 | ||
1430 | if (status != NULL_TREE && !integer_zerop (status)) | |
1431 | { | |
1432 | tree status_type = TREE_TYPE (TREE_TYPE (status)); | |
1433 | tree cond2; | |
1434 | ||
1435 | cond2 = fold_build2_loc (input_location, NE_EXPR, boolean_type_node, | |
1436 | status, build_int_cst (TREE_TYPE (status), 0)); | |
1437 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, status_type, | |
1438 | fold_build1_loc (input_location, INDIRECT_REF, | |
1439 | status_type, status), | |
1440 | build_int_cst (status_type, 1)); | |
1441 | error = fold_build3_loc (input_location, COND_EXPR, void_type_node, | |
1442 | cond2, tmp, error); | |
1443 | } | |
1444 | ||
1445 | gfc_add_expr_to_block (&null, error); | |
1446 | ||
1447 | /* When POINTER is not NULL, we free it. */ | |
1448 | gfc_start_block (&non_null); | |
a90fe829 | 1449 | |
2bf70a2a | 1450 | /* Free allocatable components. */ |
afb69dbf | 1451 | finalizable = gfc_add_finalizer_call (&non_null, expr); |
1452 | if (!finalizable && ts.type == BT_DERIVED && ts.u.derived->attr.alloc_comp) | |
2bf70a2a | 1453 | { |
1454 | tmp = build_fold_indirect_ref_loc (input_location, pointer); | |
1455 | tmp = gfc_deallocate_alloc_comp (ts.u.derived, tmp, 0); | |
1456 | gfc_add_expr_to_block (&non_null, tmp); | |
1457 | } | |
a90fe829 | 1458 | |
389dd41b | 1459 | tmp = build_call_expr_loc (input_location, |
b9a16870 | 1460 | builtin_decl_explicit (BUILT_IN_FREE), 1, |
1461 | fold_convert (pvoid_type_node, pointer)); | |
a5014d25 | 1462 | gfc_add_expr_to_block (&non_null, tmp); |
1463 | ||
1464 | if (status != NULL_TREE && !integer_zerop (status)) | |
1465 | { | |
1466 | /* We set STATUS to zero if it is present. */ | |
1467 | tree status_type = TREE_TYPE (TREE_TYPE (status)); | |
1468 | tree cond2; | |
1469 | ||
1516b2fb | 1470 | cond2 = fold_build2_loc (input_location, NE_EXPR, boolean_type_node, |
1471 | status, build_int_cst (TREE_TYPE (status), 0)); | |
1472 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, status_type, | |
1473 | fold_build1_loc (input_location, INDIRECT_REF, | |
1474 | status_type, status), | |
1475 | build_int_cst (status_type, 0)); | |
1476 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, cond2, | |
1477 | tmp, build_empty_stmt (input_location)); | |
a5014d25 | 1478 | gfc_add_expr_to_block (&non_null, tmp); |
1479 | } | |
1480 | ||
1516b2fb | 1481 | return fold_build3_loc (input_location, COND_EXPR, void_type_node, cond, |
1482 | gfc_finish_block (&null), | |
1483 | gfc_finish_block (&non_null)); | |
a5014d25 | 1484 | } |
1485 | ||
1486 | ||
1487 | /* Reallocate MEM so it has SIZE bytes of data. This behaves like the | |
1488 | following pseudo-code: | |
1489 | ||
1490 | void * | |
1491 | internal_realloc (void *mem, size_t size) | |
1492 | { | |
35d4ce9f | 1493 | res = realloc (mem, size); |
1494 | if (!res && size != 0) | |
326ff1ca | 1495 | _gfortran_os_error ("Allocation would exceed memory limit"); |
a5014d25 | 1496 | |
35d4ce9f | 1497 | return res; |
a5014d25 | 1498 | } */ |
1499 | tree | |
1500 | gfc_call_realloc (stmtblock_t * block, tree mem, tree size) | |
1501 | { | |
9635c0c3 | 1502 | tree msg, res, nonzero, null_result, tmp; |
a5014d25 | 1503 | tree type = TREE_TYPE (mem); |
1504 | ||
1d5e34dd | 1505 | /* Only evaluate the size once. */ |
1506 | size = save_expr (fold_convert (size_type_node, size)); | |
a5014d25 | 1507 | |
1508 | /* Create a variable to hold the result. */ | |
1509 | res = gfc_create_var (type, NULL); | |
1510 | ||
a5014d25 | 1511 | /* Call realloc and check the result. */ |
389dd41b | 1512 | tmp = build_call_expr_loc (input_location, |
b9a16870 | 1513 | builtin_decl_explicit (BUILT_IN_REALLOC), 2, |
a5014d25 | 1514 | fold_convert (pvoid_type_node, mem), size); |
75a70cf9 | 1515 | gfc_add_modify (block, res, fold_convert (type, tmp)); |
1516b2fb | 1516 | null_result = fold_build2_loc (input_location, EQ_EXPR, boolean_type_node, |
1517 | res, build_int_cst (pvoid_type_node, 0)); | |
1518 | nonzero = fold_build2_loc (input_location, NE_EXPR, boolean_type_node, size, | |
1519 | build_int_cst (size_type_node, 0)); | |
1520 | null_result = fold_build2_loc (input_location, TRUTH_AND_EXPR, boolean_type_node, | |
1521 | null_result, nonzero); | |
8fb9e3cd | 1522 | msg = gfc_build_addr_expr (pchar_type_node, gfc_build_localized_cstring_const |
326ff1ca | 1523 | ("Allocation would exceed memory limit")); |
1516b2fb | 1524 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, |
1525 | null_result, | |
1526 | build_call_expr_loc (input_location, | |
1527 | gfor_fndecl_os_error, 1, msg), | |
1528 | build_empty_stmt (input_location)); | |
a5014d25 | 1529 | gfc_add_expr_to_block (block, tmp); |
1530 | ||
a5014d25 | 1531 | return res; |
1532 | } | |
1533 | ||
4ee9c684 | 1534 | |
c5faa799 | 1535 | /* Add an expression to another one, either at the front or the back. */ |
4ee9c684 | 1536 | |
c5faa799 | 1537 | static void |
1538 | add_expr_to_chain (tree* chain, tree expr, bool front) | |
1539 | { | |
4ee9c684 | 1540 | if (expr == NULL_TREE || IS_EMPTY_STMT (expr)) |
1541 | return; | |
1542 | ||
c5faa799 | 1543 | if (*chain) |
150fb090 | 1544 | { |
c5faa799 | 1545 | if (TREE_CODE (*chain) != STATEMENT_LIST) |
150fb090 | 1546 | { |
1547 | tree tmp; | |
1548 | ||
c5faa799 | 1549 | tmp = *chain; |
1550 | *chain = NULL_TREE; | |
1551 | append_to_statement_list (tmp, chain); | |
150fb090 | 1552 | } |
c5faa799 | 1553 | |
1554 | if (front) | |
1555 | { | |
1556 | tree_stmt_iterator i; | |
1557 | ||
1558 | i = tsi_start (*chain); | |
1559 | tsi_link_before (&i, expr, TSI_CONTINUE_LINKING); | |
1560 | } | |
1561 | else | |
1562 | append_to_statement_list (expr, chain); | |
150fb090 | 1563 | } |
4ee9c684 | 1564 | else |
c5faa799 | 1565 | *chain = expr; |
1566 | } | |
1567 | ||
0a41f1d7 | 1568 | |
1569 | /* Add a statement at the end of a block. */ | |
c5faa799 | 1570 | |
1571 | void | |
1572 | gfc_add_expr_to_block (stmtblock_t * block, tree expr) | |
1573 | { | |
1574 | gcc_assert (block); | |
1575 | add_expr_to_chain (&block->head, expr, false); | |
4ee9c684 | 1576 | } |
1577 | ||
1578 | ||
0a41f1d7 | 1579 | /* Add a statement at the beginning of a block. */ |
1580 | ||
1581 | void | |
1582 | gfc_prepend_expr_to_block (stmtblock_t * block, tree expr) | |
1583 | { | |
1584 | gcc_assert (block); | |
1585 | add_expr_to_chain (&block->head, expr, true); | |
1586 | } | |
1587 | ||
1588 | ||
4ee9c684 | 1589 | /* Add a block the end of a block. */ |
1590 | ||
1591 | void | |
1592 | gfc_add_block_to_block (stmtblock_t * block, stmtblock_t * append) | |
1593 | { | |
22d678e8 | 1594 | gcc_assert (append); |
1595 | gcc_assert (!append->has_scope); | |
4ee9c684 | 1596 | |
1597 | gfc_add_expr_to_block (block, append->head); | |
1598 | append->head = NULL_TREE; | |
1599 | } | |
1600 | ||
1601 | ||
4671339c | 1602 | /* Save the current locus. The structure may not be complete, and should |
1603 | only be used with gfc_restore_backend_locus. */ | |
4ee9c684 | 1604 | |
1605 | void | |
4671339c | 1606 | gfc_save_backend_locus (locus * loc) |
4ee9c684 | 1607 | { |
48d8ad5a | 1608 | loc->lb = XCNEW (gfc_linebuf); |
995f721e | 1609 | loc->lb->location = input_location; |
b0057e95 | 1610 | loc->lb->file = gfc_current_backend_file; |
4ee9c684 | 1611 | } |
1612 | ||
1613 | ||
1614 | /* Set the current locus. */ | |
1615 | ||
1616 | void | |
1617 | gfc_set_backend_locus (locus * loc) | |
1618 | { | |
b0057e95 | 1619 | gfc_current_backend_file = loc->lb->file; |
b31f705b | 1620 | input_location = loc->lb->location; |
4ee9c684 | 1621 | } |
1622 | ||
1623 | ||
9834e1b6 | 1624 | /* Restore the saved locus. Only used in conjunction with |
4671339c | 1625 | gfc_save_backend_locus, to free the memory when we are done. */ |
1626 | ||
1627 | void | |
1628 | gfc_restore_backend_locus (locus * loc) | |
1629 | { | |
1630 | gfc_set_backend_locus (loc); | |
434f0922 | 1631 | free (loc->lb); |
4671339c | 1632 | } |
1633 | ||
1634 | ||
1e8c7f7a | 1635 | /* Translate an executable statement. The tree cond is used by gfc_trans_do. |
1636 | This static function is wrapped by gfc_trans_code_cond and | |
1637 | gfc_trans_code. */ | |
4ee9c684 | 1638 | |
1e8c7f7a | 1639 | static tree |
1640 | trans_code (gfc_code * code, tree cond) | |
4ee9c684 | 1641 | { |
1642 | stmtblock_t block; | |
1643 | tree res; | |
1644 | ||
1645 | if (!code) | |
e60a6f7b | 1646 | return build_empty_stmt (input_location); |
4ee9c684 | 1647 | |
1648 | gfc_start_block (&block); | |
1649 | ||
75a70cf9 | 1650 | /* Translate statements one by one into GENERIC trees until we reach |
4ee9c684 | 1651 | the end of this gfc_code branch. */ |
1652 | for (; code; code = code->next) | |
1653 | { | |
4ee9c684 | 1654 | if (code->here != 0) |
1655 | { | |
1656 | res = gfc_trans_label_here (code); | |
1657 | gfc_add_expr_to_block (&block, res); | |
1658 | } | |
1659 | ||
ee91fa6b | 1660 | gfc_current_locus = code->loc; |
1e71b314 | 1661 | gfc_set_backend_locus (&code->loc); |
1662 | ||
4ee9c684 | 1663 | switch (code->op) |
1664 | { | |
1665 | case EXEC_NOP: | |
8581350b | 1666 | case EXEC_END_BLOCK: |
045b8fbb | 1667 | case EXEC_END_NESTED_BLOCK: |
9286e713 | 1668 | case EXEC_END_PROCEDURE: |
4ee9c684 | 1669 | res = NULL_TREE; |
1670 | break; | |
1671 | ||
1672 | case EXEC_ASSIGN: | |
39f3dea0 | 1673 | if (code->expr1->ts.type == BT_CLASS) |
0fc13348 | 1674 | res = gfc_trans_class_assign (code->expr1, code->expr2, code->op); |
39f3dea0 | 1675 | else |
1676 | res = gfc_trans_assign (code); | |
4ee9c684 | 1677 | break; |
1678 | ||
1679 | case EXEC_LABEL_ASSIGN: | |
1680 | res = gfc_trans_label_assign (code); | |
1681 | break; | |
1682 | ||
1683 | case EXEC_POINTER_ASSIGN: | |
39f3dea0 | 1684 | if (code->expr1->ts.type == BT_CLASS) |
0fc13348 | 1685 | res = gfc_trans_class_assign (code->expr1, code->expr2, code->op); |
a90fe829 | 1686 | else if (UNLIMITED_POLY (code->expr2) |
1687 | && code->expr1->ts.type == BT_DERIVED | |
1688 | && (code->expr1->ts.u.derived->attr.sequence | |
1689 | || code->expr1->ts.u.derived->attr.is_bind_c)) | |
1690 | /* F2003: C717 */ | |
1691 | res = gfc_trans_class_assign (code->expr1, code->expr2, code->op); | |
39f3dea0 | 1692 | else |
1693 | res = gfc_trans_pointer_assign (code); | |
4ee9c684 | 1694 | break; |
1695 | ||
b9cd8c56 | 1696 | case EXEC_INIT_ASSIGN: |
dba1636b | 1697 | if (code->expr1->ts.type == BT_CLASS) |
0fc13348 | 1698 | res = gfc_trans_class_init_assign (code); |
dba1636b | 1699 | else |
1700 | res = gfc_trans_init_assign (code); | |
b9cd8c56 | 1701 | break; |
1702 | ||
4ee9c684 | 1703 | case EXEC_CONTINUE: |
1704 | res = NULL_TREE; | |
1705 | break; | |
1706 | ||
c6cd3066 | 1707 | case EXEC_CRITICAL: |
1708 | res = gfc_trans_critical (code); | |
1709 | break; | |
1710 | ||
4ee9c684 | 1711 | case EXEC_CYCLE: |
1712 | res = gfc_trans_cycle (code); | |
1713 | break; | |
1714 | ||
1715 | case EXEC_EXIT: | |
1716 | res = gfc_trans_exit (code); | |
1717 | break; | |
1718 | ||
1719 | case EXEC_GOTO: | |
1720 | res = gfc_trans_goto (code); | |
1721 | break; | |
1722 | ||
1b716045 | 1723 | case EXEC_ENTRY: |
1724 | res = gfc_trans_entry (code); | |
1725 | break; | |
1726 | ||
4ee9c684 | 1727 | case EXEC_PAUSE: |
1728 | res = gfc_trans_pause (code); | |
1729 | break; | |
1730 | ||
1731 | case EXEC_STOP: | |
c6cd3066 | 1732 | case EXEC_ERROR_STOP: |
1733 | res = gfc_trans_stop (code, code->op == EXEC_ERROR_STOP); | |
4ee9c684 | 1734 | break; |
1735 | ||
1736 | case EXEC_CALL: | |
7a2a9daf | 1737 | /* For MVBITS we've got the special exception that we need a |
1738 | dependency check, too. */ | |
1739 | { | |
1740 | bool is_mvbits = false; | |
6ccde1eb | 1741 | |
1742 | if (code->resolved_isym) | |
1743 | { | |
1744 | res = gfc_conv_intrinsic_subroutine (code); | |
1745 | if (res != NULL_TREE) | |
1746 | break; | |
1747 | } | |
1748 | ||
7a2a9daf | 1749 | if (code->resolved_isym |
1750 | && code->resolved_isym->id == GFC_ISYM_MVBITS) | |
1751 | is_mvbits = true; | |
6ccde1eb | 1752 | |
1753 | res = gfc_trans_call (code, is_mvbits, NULL_TREE, | |
1754 | NULL_TREE, false); | |
7a2a9daf | 1755 | } |
9960dc89 | 1756 | break; |
1757 | ||
64e93293 | 1758 | case EXEC_CALL_PPC: |
b36b5dd2 | 1759 | res = gfc_trans_call (code, false, NULL_TREE, |
1760 | NULL_TREE, false); | |
64e93293 | 1761 | break; |
1762 | ||
9960dc89 | 1763 | case EXEC_ASSIGN_CALL: |
b36b5dd2 | 1764 | res = gfc_trans_call (code, true, NULL_TREE, |
1765 | NULL_TREE, false); | |
4ee9c684 | 1766 | break; |
1767 | ||
1768 | case EXEC_RETURN: | |
1769 | res = gfc_trans_return (code); | |
1770 | break; | |
1771 | ||
1772 | case EXEC_IF: | |
1773 | res = gfc_trans_if (code); | |
1774 | break; | |
1775 | ||
1776 | case EXEC_ARITHMETIC_IF: | |
1777 | res = gfc_trans_arithmetic_if (code); | |
6a7084d7 | 1778 | break; |
1779 | ||
1780 | case EXEC_BLOCK: | |
1781 | res = gfc_trans_block_construct (code); | |
4ee9c684 | 1782 | break; |
1783 | ||
1784 | case EXEC_DO: | |
1e8c7f7a | 1785 | res = gfc_trans_do (code, cond); |
4ee9c684 | 1786 | break; |
1787 | ||
55ea8666 | 1788 | case EXEC_DO_CONCURRENT: |
1789 | res = gfc_trans_do_concurrent (code); | |
1790 | break; | |
1791 | ||
4ee9c684 | 1792 | case EXEC_DO_WHILE: |
1793 | res = gfc_trans_do_while (code); | |
1794 | break; | |
1795 | ||
1796 | case EXEC_SELECT: | |
1797 | res = gfc_trans_select (code); | |
1798 | break; | |
1799 | ||
1de1b1a9 | 1800 | case EXEC_SELECT_TYPE: |
1801 | /* Do nothing. SELECT TYPE statements should be transformed into | |
1802 | an ordinary SELECT CASE at resolution stage. | |
1803 | TODO: Add an error message here once this is done. */ | |
1804 | res = NULL_TREE; | |
1805 | break; | |
1806 | ||
6c306f90 | 1807 | case EXEC_FLUSH: |
1808 | res = gfc_trans_flush (code); | |
1809 | break; | |
1810 | ||
c6cd3066 | 1811 | case EXEC_SYNC_ALL: |
1812 | case EXEC_SYNC_IMAGES: | |
1813 | case EXEC_SYNC_MEMORY: | |
1814 | res = gfc_trans_sync (code, code->op); | |
1815 | break; | |
1816 | ||
c135f087 | 1817 | case EXEC_LOCK: |
1818 | case EXEC_UNLOCK: | |
1819 | res = gfc_trans_lock_unlock (code, code->op); | |
1820 | break; | |
1821 | ||
bd47f0bc | 1822 | case EXEC_EVENT_POST: |
1823 | case EXEC_EVENT_WAIT: | |
1824 | res = gfc_trans_event_post_wait (code, code->op); | |
1825 | break; | |
1826 | ||
4ee9c684 | 1827 | case EXEC_FORALL: |
1828 | res = gfc_trans_forall (code); | |
1829 | break; | |
1830 | ||
1831 | case EXEC_WHERE: | |
1832 | res = gfc_trans_where (code); | |
1833 | break; | |
1834 | ||
1835 | case EXEC_ALLOCATE: | |
1836 | res = gfc_trans_allocate (code); | |
1837 | break; | |
1838 | ||
1839 | case EXEC_DEALLOCATE: | |
1840 | res = gfc_trans_deallocate (code); | |
1841 | break; | |
1842 | ||
1843 | case EXEC_OPEN: | |
1844 | res = gfc_trans_open (code); | |
1845 | break; | |
1846 | ||
1847 | case EXEC_CLOSE: | |
1848 | res = gfc_trans_close (code); | |
1849 | break; | |
1850 | ||
1851 | case EXEC_READ: | |
1852 | res = gfc_trans_read (code); | |
1853 | break; | |
1854 | ||
1855 | case EXEC_WRITE: | |
1856 | res = gfc_trans_write (code); | |
1857 | break; | |
1858 | ||
1859 | case EXEC_IOLENGTH: | |
1860 | res = gfc_trans_iolength (code); | |
1861 | break; | |
1862 | ||
1863 | case EXEC_BACKSPACE: | |
1864 | res = gfc_trans_backspace (code); | |
1865 | break; | |
1866 | ||
1867 | case EXEC_ENDFILE: | |
1868 | res = gfc_trans_endfile (code); | |
1869 | break; | |
1870 | ||
1871 | case EXEC_INQUIRE: | |
1872 | res = gfc_trans_inquire (code); | |
1873 | break; | |
1874 | ||
ff6af856 | 1875 | case EXEC_WAIT: |
1876 | res = gfc_trans_wait (code); | |
1877 | break; | |
1878 | ||
4ee9c684 | 1879 | case EXEC_REWIND: |
1880 | res = gfc_trans_rewind (code); | |
1881 | break; | |
1882 | ||
1883 | case EXEC_TRANSFER: | |
1884 | res = gfc_trans_transfer (code); | |
1885 | break; | |
1886 | ||
1887 | case EXEC_DT_END: | |
1888 | res = gfc_trans_dt_end (code); | |
1889 | break; | |
1890 | ||
764f1175 | 1891 | case EXEC_OMP_ATOMIC: |
1892 | case EXEC_OMP_BARRIER: | |
15b28553 | 1893 | case EXEC_OMP_CANCEL: |
1894 | case EXEC_OMP_CANCELLATION_POINT: | |
764f1175 | 1895 | case EXEC_OMP_CRITICAL: |
691447ab | 1896 | case EXEC_OMP_DISTRIBUTE: |
1897 | case EXEC_OMP_DISTRIBUTE_PARALLEL_DO: | |
1898 | case EXEC_OMP_DISTRIBUTE_PARALLEL_DO_SIMD: | |
1899 | case EXEC_OMP_DISTRIBUTE_SIMD: | |
764f1175 | 1900 | case EXEC_OMP_DO: |
15b28553 | 1901 | case EXEC_OMP_DO_SIMD: |
764f1175 | 1902 | case EXEC_OMP_FLUSH: |
1903 | case EXEC_OMP_MASTER: | |
1904 | case EXEC_OMP_ORDERED: | |
1905 | case EXEC_OMP_PARALLEL: | |
1906 | case EXEC_OMP_PARALLEL_DO: | |
15b28553 | 1907 | case EXEC_OMP_PARALLEL_DO_SIMD: |
764f1175 | 1908 | case EXEC_OMP_PARALLEL_SECTIONS: |
1909 | case EXEC_OMP_PARALLEL_WORKSHARE: | |
1910 | case EXEC_OMP_SECTIONS: | |
15b28553 | 1911 | case EXEC_OMP_SIMD: |
764f1175 | 1912 | case EXEC_OMP_SINGLE: |
691447ab | 1913 | case EXEC_OMP_TARGET: |
1914 | case EXEC_OMP_TARGET_DATA: | |
1915 | case EXEC_OMP_TARGET_TEAMS: | |
1916 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE: | |
1917 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO: | |
1918 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD: | |
1919 | case EXEC_OMP_TARGET_TEAMS_DISTRIBUTE_SIMD: | |
1920 | case EXEC_OMP_TARGET_UPDATE: | |
fd6481cf | 1921 | case EXEC_OMP_TASK: |
15b28553 | 1922 | case EXEC_OMP_TASKGROUP: |
fd6481cf | 1923 | case EXEC_OMP_TASKWAIT: |
2169f33b | 1924 | case EXEC_OMP_TASKYIELD: |
691447ab | 1925 | case EXEC_OMP_TEAMS: |
1926 | case EXEC_OMP_TEAMS_DISTRIBUTE: | |
1927 | case EXEC_OMP_TEAMS_DISTRIBUTE_PARALLEL_DO: | |
1928 | case EXEC_OMP_TEAMS_DISTRIBUTE_PARALLEL_DO_SIMD: | |
1929 | case EXEC_OMP_TEAMS_DISTRIBUTE_SIMD: | |
764f1175 | 1930 | case EXEC_OMP_WORKSHARE: |
1931 | res = gfc_trans_omp_directive (code); | |
1932 | break; | |
1933 | ||
ca4c3545 | 1934 | case EXEC_OACC_CACHE: |
1935 | case EXEC_OACC_WAIT: | |
1936 | case EXEC_OACC_UPDATE: | |
1937 | case EXEC_OACC_LOOP: | |
1938 | case EXEC_OACC_HOST_DATA: | |
1939 | case EXEC_OACC_DATA: | |
1940 | case EXEC_OACC_KERNELS: | |
1941 | case EXEC_OACC_KERNELS_LOOP: | |
1942 | case EXEC_OACC_PARALLEL: | |
1943 | case EXEC_OACC_PARALLEL_LOOP: | |
1944 | case EXEC_OACC_ENTER_DATA: | |
1945 | case EXEC_OACC_EXIT_DATA: | |
9e10bfb7 | 1946 | case EXEC_OACC_ATOMIC: |
01d728a4 | 1947 | case EXEC_OACC_DECLARE: |
ca4c3545 | 1948 | res = gfc_trans_oacc_directive (code); |
1949 | break; | |
1950 | ||
4ee9c684 | 1951 | default: |
382ad5c3 | 1952 | gfc_internal_error ("gfc_trans_code(): Bad statement code"); |
4ee9c684 | 1953 | } |
1954 | ||
b4a342ef | 1955 | gfc_set_backend_locus (&code->loc); |
1956 | ||
4ee9c684 | 1957 | if (res != NULL_TREE && ! IS_EMPTY_STMT (res)) |
1958 | { | |
1b013d97 | 1959 | if (TREE_CODE (res) != STATEMENT_LIST) |
b31f705b | 1960 | SET_EXPR_LOCATION (res, input_location); |
a90fe829 | 1961 | |
b4a342ef | 1962 | /* Add the new statement to the block. */ |
4ee9c684 | 1963 | gfc_add_expr_to_block (&block, res); |
1964 | } | |
1965 | } | |
1966 | ||
1967 | /* Return the finished block. */ | |
1968 | return gfc_finish_block (&block); | |
1969 | } | |
1970 | ||
1971 | ||
1e8c7f7a | 1972 | /* Translate an executable statement with condition, cond. The condition is |
1973 | used by gfc_trans_do to test for IO result conditions inside implied | |
1974 | DO loops of READ and WRITE statements. See build_dt in trans-io.c. */ | |
1975 | ||
1976 | tree | |
1977 | gfc_trans_code_cond (gfc_code * code, tree cond) | |
1978 | { | |
1979 | return trans_code (code, cond); | |
1980 | } | |
1981 | ||
1982 | /* Translate an executable statement without condition. */ | |
1983 | ||
1984 | tree | |
1985 | gfc_trans_code (gfc_code * code) | |
1986 | { | |
1987 | return trans_code (code, NULL_TREE); | |
1988 | } | |
1989 | ||
1990 | ||
4ee9c684 | 1991 | /* This function is called after a complete program unit has been parsed |
1992 | and resolved. */ | |
1993 | ||
1994 | void | |
1995 | gfc_generate_code (gfc_namespace * ns) | |
1996 | { | |
e2720a06 | 1997 | ompws_flags = 0; |
9ec7c303 | 1998 | if (ns->is_block_data) |
1999 | { | |
2000 | gfc_generate_block_data (ns); | |
2001 | return; | |
2002 | } | |
2003 | ||
4ee9c684 | 2004 | gfc_generate_function_code (ns); |
2005 | } | |
2006 | ||
2007 | ||
2008 | /* This function is called after a complete module has been parsed | |
2009 | and resolved. */ | |
2010 | ||
2011 | void | |
2012 | gfc_generate_module_code (gfc_namespace * ns) | |
2013 | { | |
2014 | gfc_namespace *n; | |
df4d540f | 2015 | struct module_htab_entry *entry; |
2016 | ||
2017 | gcc_assert (ns->proc_name->backend_decl == NULL); | |
2018 | ns->proc_name->backend_decl | |
e60a6f7b | 2019 | = build_decl (ns->proc_name->declared_at.lb->location, |
2020 | NAMESPACE_DECL, get_identifier (ns->proc_name->name), | |
df4d540f | 2021 | void_type_node); |
df4d540f | 2022 | entry = gfc_find_module (ns->proc_name->name); |
2023 | if (entry->namespace_decl) | |
2024 | /* Buggy sourcecode, using a module before defining it? */ | |
2ef51f0e | 2025 | entry->decls->empty (); |
df4d540f | 2026 | entry->namespace_decl = ns->proc_name->backend_decl; |
4ee9c684 | 2027 | |
2028 | gfc_generate_module_vars (ns); | |
2029 | ||
2030 | /* We need to generate all module function prototypes first, to allow | |
2031 | sibling calls. */ | |
2032 | for (n = ns->contained; n; n = n->sibling) | |
2033 | { | |
df4d540f | 2034 | gfc_entry_list *el; |
2035 | ||
4ee9c684 | 2036 | if (!n->proc_name) |
2037 | continue; | |
2038 | ||
d896f9b3 | 2039 | gfc_create_function_decl (n, false); |
df4d540f | 2040 | DECL_CONTEXT (n->proc_name->backend_decl) = ns->proc_name->backend_decl; |
2041 | gfc_module_add_decl (entry, n->proc_name->backend_decl); | |
2042 | for (el = ns->entries; el; el = el->next) | |
2043 | { | |
df4d540f | 2044 | DECL_CONTEXT (el->sym->backend_decl) = ns->proc_name->backend_decl; |
2045 | gfc_module_add_decl (entry, el->sym->backend_decl); | |
2046 | } | |
4ee9c684 | 2047 | } |
2048 | ||
2049 | for (n = ns->contained; n; n = n->sibling) | |
2050 | { | |
2051 | if (!n->proc_name) | |
2052 | continue; | |
2053 | ||
2054 | gfc_generate_function_code (n); | |
2055 | } | |
2056 | } | |
2057 | ||
c5faa799 | 2058 | |
2059 | /* Initialize an init/cleanup block with existing code. */ | |
2060 | ||
2061 | void | |
2062 | gfc_start_wrapped_block (gfc_wrapped_block* block, tree code) | |
2063 | { | |
2064 | gcc_assert (block); | |
2065 | ||
2066 | block->init = NULL_TREE; | |
2067 | block->code = code; | |
2068 | block->cleanup = NULL_TREE; | |
2069 | } | |
2070 | ||
2071 | ||
2072 | /* Add a new pair of initializers/clean-up code. */ | |
2073 | ||
2074 | void | |
2075 | gfc_add_init_cleanup (gfc_wrapped_block* block, tree init, tree cleanup) | |
2076 | { | |
2077 | gcc_assert (block); | |
2078 | ||
2079 | /* The new pair of init/cleanup should be "wrapped around" the existing | |
2080 | block of code, thus the initialization is added to the front and the | |
2081 | cleanup to the back. */ | |
2082 | add_expr_to_chain (&block->init, init, true); | |
2083 | add_expr_to_chain (&block->cleanup, cleanup, false); | |
2084 | } | |
2085 | ||
2086 | ||
2087 | /* Finish up a wrapped block by building a corresponding try-finally expr. */ | |
2088 | ||
2089 | tree | |
2090 | gfc_finish_wrapped_block (gfc_wrapped_block* block) | |
2091 | { | |
2092 | tree result; | |
2093 | ||
2094 | gcc_assert (block); | |
2095 | ||
2096 | /* Build the final expression. For this, just add init and body together, | |
2097 | and put clean-up with that into a TRY_FINALLY_EXPR. */ | |
2098 | result = block->init; | |
2099 | add_expr_to_chain (&result, block->code, false); | |
2100 | if (block->cleanup) | |
2be9d8f1 | 2101 | result = build2_loc (input_location, TRY_FINALLY_EXPR, void_type_node, |
2102 | result, block->cleanup); | |
a90fe829 | 2103 | |
c5faa799 | 2104 | /* Clear the block. */ |
2105 | block->init = NULL_TREE; | |
2106 | block->code = NULL_TREE; | |
2107 | block->cleanup = NULL_TREE; | |
2108 | ||
2109 | return result; | |
2110 | } | |
09800dba | 2111 | |
2112 | ||
2113 | /* Helper function for marking a boolean expression tree as unlikely. */ | |
2114 | ||
2115 | tree | |
c83059be | 2116 | gfc_unlikely (tree cond, enum br_predictor predictor) |
09800dba | 2117 | { |
2118 | tree tmp; | |
2119 | ||
c83059be | 2120 | if (optimize) |
2121 | { | |
2122 | cond = fold_convert (long_integer_type_node, cond); | |
2123 | tmp = build_zero_cst (long_integer_type_node); | |
2124 | cond = build_call_expr_loc (input_location, | |
2125 | builtin_decl_explicit (BUILT_IN_EXPECT), | |
2126 | 3, cond, tmp, | |
2127 | build_int_cst (integer_type_node, | |
2128 | predictor)); | |
2129 | } | |
09800dba | 2130 | cond = fold_convert (boolean_type_node, cond); |
2131 | return cond; | |
2132 | } | |
297effe4 | 2133 | |
2134 | ||
2135 | /* Helper function for marking a boolean expression tree as likely. */ | |
2136 | ||
2137 | tree | |
c83059be | 2138 | gfc_likely (tree cond, enum br_predictor predictor) |
297effe4 | 2139 | { |
2140 | tree tmp; | |
2141 | ||
c83059be | 2142 | if (optimize) |
2143 | { | |
2144 | cond = fold_convert (long_integer_type_node, cond); | |
2145 | tmp = build_one_cst (long_integer_type_node); | |
2146 | cond = build_call_expr_loc (input_location, | |
2147 | builtin_decl_explicit (BUILT_IN_EXPECT), | |
2148 | 3, cond, tmp, | |
2149 | build_int_cst (integer_type_node, | |
2150 | predictor)); | |
2151 | } | |
297effe4 | 2152 | cond = fold_convert (boolean_type_node, cond); |
2153 | return cond; | |
2154 | } | |
13d7216c | 2155 | |
2156 | ||
2157 | /* Get the string length for a deferred character length component. */ | |
2158 | ||
2159 | bool | |
2160 | gfc_deferred_strlen (gfc_component *c, tree *decl) | |
2161 | { | |
2162 | char name[GFC_MAX_SYMBOL_LEN+9]; | |
2163 | gfc_component *strlen; | |
2164 | if (!(c->ts.type == BT_CHARACTER && c->ts.deferred)) | |
2165 | return false; | |
2166 | sprintf (name, "_%s_length", c->name); | |
2167 | for (strlen = c; strlen; strlen = strlen->next) | |
2168 | if (strcmp (strlen->name, name) == 0) | |
2169 | break; | |
2170 | *decl = strlen ? strlen->backend_decl : NULL_TREE; | |
2171 | return strlen != NULL; | |
2172 | } |