Mercurial > hg > CbC > CbC_gcc
comparison gcc/fortran/trans-decl.c @ 111:04ced10e8804
gcc 7
author | kono |
---|---|
date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 84e7813d76e9 |
comparison
equal
deleted
inserted
replaced
68:561a7518be6b | 111:04ced10e8804 |
---|---|
1 /* Backend function setup | |
2 Copyright (C) 2002-2017 Free Software Foundation, Inc. | |
3 Contributed by Paul Brook | |
4 | |
5 This file is part of GCC. | |
6 | |
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 | |
9 Software Foundation; either version 3, or (at your option) any later | |
10 version. | |
11 | |
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. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
18 along with GCC; see the file COPYING3. If not see | |
19 <http://www.gnu.org/licenses/>. */ | |
20 | |
21 /* trans-decl.c -- Handling of backend function and variable decls, etc */ | |
22 | |
23 #include "config.h" | |
24 #include "system.h" | |
25 #include "coretypes.h" | |
26 #include "target.h" | |
27 #include "function.h" | |
28 #include "tree.h" | |
29 #include "gfortran.h" | |
30 #include "gimple-expr.h" /* For create_tmp_var_raw. */ | |
31 #include "trans.h" | |
32 #include "stringpool.h" | |
33 #include "cgraph.h" | |
34 #include "fold-const.h" | |
35 #include "stor-layout.h" | |
36 #include "varasm.h" | |
37 #include "attribs.h" | |
38 #include "dumpfile.h" | |
39 #include "toplev.h" /* For announce_function. */ | |
40 #include "debug.h" | |
41 #include "constructor.h" | |
42 #include "trans-types.h" | |
43 #include "trans-array.h" | |
44 #include "trans-const.h" | |
45 /* Only for gfc_trans_code. Shouldn't need to include this. */ | |
46 #include "trans-stmt.h" | |
47 #include "gomp-constants.h" | |
48 #include "gimplify.h" | |
49 | |
50 #define MAX_LABEL_VALUE 99999 | |
51 | |
52 | |
53 /* Holds the result of the function if no result variable specified. */ | |
54 | |
55 static GTY(()) tree current_fake_result_decl; | |
56 static GTY(()) tree parent_fake_result_decl; | |
57 | |
58 | |
59 /* Holds the variable DECLs for the current function. */ | |
60 | |
61 static GTY(()) tree saved_function_decls; | |
62 static GTY(()) tree saved_parent_function_decls; | |
63 | |
64 static hash_set<tree> *nonlocal_dummy_decl_pset; | |
65 static GTY(()) tree nonlocal_dummy_decls; | |
66 | |
67 /* Holds the variable DECLs that are locals. */ | |
68 | |
69 static GTY(()) tree saved_local_decls; | |
70 | |
71 /* The namespace of the module we're currently generating. Only used while | |
72 outputting decls for module variables. Do not rely on this being set. */ | |
73 | |
74 static gfc_namespace *module_namespace; | |
75 | |
76 /* The currently processed procedure symbol. */ | |
77 static gfc_symbol* current_procedure_symbol = NULL; | |
78 | |
79 /* The currently processed module. */ | |
80 static struct module_htab_entry *cur_module; | |
81 | |
82 /* With -fcoarray=lib: For generating the registering call | |
83 of static coarrays. */ | |
84 static bool has_coarray_vars; | |
85 static stmtblock_t caf_init_block; | |
86 | |
87 | |
88 /* List of static constructor functions. */ | |
89 | |
90 tree gfc_static_ctors; | |
91 | |
92 | |
93 /* Whether we've seen a symbol from an IEEE module in the namespace. */ | |
94 static int seen_ieee_symbol; | |
95 | |
96 /* Function declarations for builtin library functions. */ | |
97 | |
98 tree gfor_fndecl_pause_numeric; | |
99 tree gfor_fndecl_pause_string; | |
100 tree gfor_fndecl_stop_numeric; | |
101 tree gfor_fndecl_stop_string; | |
102 tree gfor_fndecl_error_stop_numeric; | |
103 tree gfor_fndecl_error_stop_string; | |
104 tree gfor_fndecl_runtime_error; | |
105 tree gfor_fndecl_runtime_error_at; | |
106 tree gfor_fndecl_runtime_warning_at; | |
107 tree gfor_fndecl_os_error; | |
108 tree gfor_fndecl_generate_error; | |
109 tree gfor_fndecl_set_args; | |
110 tree gfor_fndecl_set_fpe; | |
111 tree gfor_fndecl_set_options; | |
112 tree gfor_fndecl_set_convert; | |
113 tree gfor_fndecl_set_record_marker; | |
114 tree gfor_fndecl_set_max_subrecord_length; | |
115 tree gfor_fndecl_ctime; | |
116 tree gfor_fndecl_fdate; | |
117 tree gfor_fndecl_ttynam; | |
118 tree gfor_fndecl_in_pack; | |
119 tree gfor_fndecl_in_unpack; | |
120 tree gfor_fndecl_associated; | |
121 tree gfor_fndecl_system_clock4; | |
122 tree gfor_fndecl_system_clock8; | |
123 tree gfor_fndecl_ieee_procedure_entry; | |
124 tree gfor_fndecl_ieee_procedure_exit; | |
125 | |
126 | |
127 /* Coarray run-time library function decls. */ | |
128 tree gfor_fndecl_caf_init; | |
129 tree gfor_fndecl_caf_finalize; | |
130 tree gfor_fndecl_caf_this_image; | |
131 tree gfor_fndecl_caf_num_images; | |
132 tree gfor_fndecl_caf_register; | |
133 tree gfor_fndecl_caf_deregister; | |
134 tree gfor_fndecl_caf_get; | |
135 tree gfor_fndecl_caf_send; | |
136 tree gfor_fndecl_caf_sendget; | |
137 tree gfor_fndecl_caf_get_by_ref; | |
138 tree gfor_fndecl_caf_send_by_ref; | |
139 tree gfor_fndecl_caf_sendget_by_ref; | |
140 tree gfor_fndecl_caf_sync_all; | |
141 tree gfor_fndecl_caf_sync_memory; | |
142 tree gfor_fndecl_caf_sync_images; | |
143 tree gfor_fndecl_caf_stop_str; | |
144 tree gfor_fndecl_caf_stop_numeric; | |
145 tree gfor_fndecl_caf_error_stop; | |
146 tree gfor_fndecl_caf_error_stop_str; | |
147 tree gfor_fndecl_caf_atomic_def; | |
148 tree gfor_fndecl_caf_atomic_ref; | |
149 tree gfor_fndecl_caf_atomic_cas; | |
150 tree gfor_fndecl_caf_atomic_op; | |
151 tree gfor_fndecl_caf_lock; | |
152 tree gfor_fndecl_caf_unlock; | |
153 tree gfor_fndecl_caf_event_post; | |
154 tree gfor_fndecl_caf_event_wait; | |
155 tree gfor_fndecl_caf_event_query; | |
156 tree gfor_fndecl_caf_fail_image; | |
157 tree gfor_fndecl_caf_failed_images; | |
158 tree gfor_fndecl_caf_image_status; | |
159 tree gfor_fndecl_caf_stopped_images; | |
160 tree gfor_fndecl_co_broadcast; | |
161 tree gfor_fndecl_co_max; | |
162 tree gfor_fndecl_co_min; | |
163 tree gfor_fndecl_co_reduce; | |
164 tree gfor_fndecl_co_sum; | |
165 tree gfor_fndecl_caf_is_present; | |
166 | |
167 | |
168 /* Math functions. Many other math functions are handled in | |
169 trans-intrinsic.c. */ | |
170 | |
171 gfc_powdecl_list gfor_fndecl_math_powi[4][3]; | |
172 tree gfor_fndecl_math_ishftc4; | |
173 tree gfor_fndecl_math_ishftc8; | |
174 tree gfor_fndecl_math_ishftc16; | |
175 | |
176 | |
177 /* String functions. */ | |
178 | |
179 tree gfor_fndecl_compare_string; | |
180 tree gfor_fndecl_concat_string; | |
181 tree gfor_fndecl_string_len_trim; | |
182 tree gfor_fndecl_string_index; | |
183 tree gfor_fndecl_string_scan; | |
184 tree gfor_fndecl_string_verify; | |
185 tree gfor_fndecl_string_trim; | |
186 tree gfor_fndecl_string_minmax; | |
187 tree gfor_fndecl_adjustl; | |
188 tree gfor_fndecl_adjustr; | |
189 tree gfor_fndecl_select_string; | |
190 tree gfor_fndecl_compare_string_char4; | |
191 tree gfor_fndecl_concat_string_char4; | |
192 tree gfor_fndecl_string_len_trim_char4; | |
193 tree gfor_fndecl_string_index_char4; | |
194 tree gfor_fndecl_string_scan_char4; | |
195 tree gfor_fndecl_string_verify_char4; | |
196 tree gfor_fndecl_string_trim_char4; | |
197 tree gfor_fndecl_string_minmax_char4; | |
198 tree gfor_fndecl_adjustl_char4; | |
199 tree gfor_fndecl_adjustr_char4; | |
200 tree gfor_fndecl_select_string_char4; | |
201 | |
202 | |
203 /* Conversion between character kinds. */ | |
204 tree gfor_fndecl_convert_char1_to_char4; | |
205 tree gfor_fndecl_convert_char4_to_char1; | |
206 | |
207 | |
208 /* Other misc. runtime library functions. */ | |
209 tree gfor_fndecl_size0; | |
210 tree gfor_fndecl_size1; | |
211 tree gfor_fndecl_iargc; | |
212 | |
213 /* Intrinsic functions implemented in Fortran. */ | |
214 tree gfor_fndecl_sc_kind; | |
215 tree gfor_fndecl_si_kind; | |
216 tree gfor_fndecl_sr_kind; | |
217 | |
218 /* BLAS gemm functions. */ | |
219 tree gfor_fndecl_sgemm; | |
220 tree gfor_fndecl_dgemm; | |
221 tree gfor_fndecl_cgemm; | |
222 tree gfor_fndecl_zgemm; | |
223 | |
224 | |
225 static void | |
226 gfc_add_decl_to_parent_function (tree decl) | |
227 { | |
228 gcc_assert (decl); | |
229 DECL_CONTEXT (decl) = DECL_CONTEXT (current_function_decl); | |
230 DECL_NONLOCAL (decl) = 1; | |
231 DECL_CHAIN (decl) = saved_parent_function_decls; | |
232 saved_parent_function_decls = decl; | |
233 } | |
234 | |
235 void | |
236 gfc_add_decl_to_function (tree decl) | |
237 { | |
238 gcc_assert (decl); | |
239 TREE_USED (decl) = 1; | |
240 DECL_CONTEXT (decl) = current_function_decl; | |
241 DECL_CHAIN (decl) = saved_function_decls; | |
242 saved_function_decls = decl; | |
243 } | |
244 | |
245 static void | |
246 add_decl_as_local (tree decl) | |
247 { | |
248 gcc_assert (decl); | |
249 TREE_USED (decl) = 1; | |
250 DECL_CONTEXT (decl) = current_function_decl; | |
251 DECL_CHAIN (decl) = saved_local_decls; | |
252 saved_local_decls = decl; | |
253 } | |
254 | |
255 | |
256 /* Build a backend label declaration. Set TREE_USED for named labels. | |
257 The context of the label is always the current_function_decl. All | |
258 labels are marked artificial. */ | |
259 | |
260 tree | |
261 gfc_build_label_decl (tree label_id) | |
262 { | |
263 /* 2^32 temporaries should be enough. */ | |
264 static unsigned int tmp_num = 1; | |
265 tree label_decl; | |
266 char *label_name; | |
267 | |
268 if (label_id == NULL_TREE) | |
269 { | |
270 /* Build an internal label name. */ | |
271 ASM_FORMAT_PRIVATE_NAME (label_name, "L", tmp_num++); | |
272 label_id = get_identifier (label_name); | |
273 } | |
274 else | |
275 label_name = NULL; | |
276 | |
277 /* Build the LABEL_DECL node. Labels have no type. */ | |
278 label_decl = build_decl (input_location, | |
279 LABEL_DECL, label_id, void_type_node); | |
280 DECL_CONTEXT (label_decl) = current_function_decl; | |
281 SET_DECL_MODE (label_decl, VOIDmode); | |
282 | |
283 /* We always define the label as used, even if the original source | |
284 file never references the label. We don't want all kinds of | |
285 spurious warnings for old-style Fortran code with too many | |
286 labels. */ | |
287 TREE_USED (label_decl) = 1; | |
288 | |
289 DECL_ARTIFICIAL (label_decl) = 1; | |
290 return label_decl; | |
291 } | |
292 | |
293 | |
294 /* Set the backend source location of a decl. */ | |
295 | |
296 void | |
297 gfc_set_decl_location (tree decl, locus * loc) | |
298 { | |
299 DECL_SOURCE_LOCATION (decl) = loc->lb->location; | |
300 } | |
301 | |
302 | |
303 /* Return the backend label declaration for a given label structure, | |
304 or create it if it doesn't exist yet. */ | |
305 | |
306 tree | |
307 gfc_get_label_decl (gfc_st_label * lp) | |
308 { | |
309 if (lp->backend_decl) | |
310 return lp->backend_decl; | |
311 else | |
312 { | |
313 char label_name[GFC_MAX_SYMBOL_LEN + 1]; | |
314 tree label_decl; | |
315 | |
316 /* Validate the label declaration from the front end. */ | |
317 gcc_assert (lp != NULL && lp->value <= MAX_LABEL_VALUE); | |
318 | |
319 /* Build a mangled name for the label. */ | |
320 sprintf (label_name, "__label_%.6d", lp->value); | |
321 | |
322 /* Build the LABEL_DECL node. */ | |
323 label_decl = gfc_build_label_decl (get_identifier (label_name)); | |
324 | |
325 /* Tell the debugger where the label came from. */ | |
326 if (lp->value <= MAX_LABEL_VALUE) /* An internal label. */ | |
327 gfc_set_decl_location (label_decl, &lp->where); | |
328 else | |
329 DECL_ARTIFICIAL (label_decl) = 1; | |
330 | |
331 /* Store the label in the label list and return the LABEL_DECL. */ | |
332 lp->backend_decl = label_decl; | |
333 return label_decl; | |
334 } | |
335 } | |
336 | |
337 | |
338 /* Convert a gfc_symbol to an identifier of the same name. */ | |
339 | |
340 static tree | |
341 gfc_sym_identifier (gfc_symbol * sym) | |
342 { | |
343 if (sym->attr.is_main_program && strcmp (sym->name, "main") == 0) | |
344 return (get_identifier ("MAIN__")); | |
345 else | |
346 return (get_identifier (sym->name)); | |
347 } | |
348 | |
349 | |
350 /* Construct mangled name from symbol name. */ | |
351 | |
352 static tree | |
353 gfc_sym_mangled_identifier (gfc_symbol * sym) | |
354 { | |
355 char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
356 | |
357 /* Prevent the mangling of identifiers that have an assigned | |
358 binding label (mainly those that are bind(c)). */ | |
359 if (sym->attr.is_bind_c == 1 && sym->binding_label) | |
360 return get_identifier (sym->binding_label); | |
361 | |
362 if (!sym->fn_result_spec) | |
363 { | |
364 if (sym->module == NULL) | |
365 return gfc_sym_identifier (sym); | |
366 else | |
367 { | |
368 snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); | |
369 return get_identifier (name); | |
370 } | |
371 } | |
372 else | |
373 { | |
374 /* This is an entity that is actually local to a module procedure | |
375 that appears in the result specification expression. Since | |
376 sym->module will be a zero length string, we use ns->proc_name | |
377 instead. */ | |
378 if (sym->ns->proc_name && sym->ns->proc_name->module) | |
379 { | |
380 snprintf (name, sizeof name, "__%s_MOD__%s_PROC_%s", | |
381 sym->ns->proc_name->module, | |
382 sym->ns->proc_name->name, | |
383 sym->name); | |
384 return get_identifier (name); | |
385 } | |
386 else | |
387 { | |
388 snprintf (name, sizeof name, "__%s_PROC_%s", | |
389 sym->ns->proc_name->name, sym->name); | |
390 return get_identifier (name); | |
391 } | |
392 } | |
393 } | |
394 | |
395 | |
396 /* Construct mangled function name from symbol name. */ | |
397 | |
398 static tree | |
399 gfc_sym_mangled_function_id (gfc_symbol * sym) | |
400 { | |
401 int has_underscore; | |
402 char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
403 | |
404 /* It may be possible to simply use the binding label if it's | |
405 provided, and remove the other checks. Then we could use it | |
406 for other things if we wished. */ | |
407 if ((sym->attr.is_bind_c == 1 || sym->attr.is_iso_c == 1) && | |
408 sym->binding_label) | |
409 /* use the binding label rather than the mangled name */ | |
410 return get_identifier (sym->binding_label); | |
411 | |
412 if ((sym->module == NULL || sym->attr.proc == PROC_EXTERNAL | |
413 || (sym->module != NULL && (sym->attr.external | |
414 || sym->attr.if_source == IFSRC_IFBODY))) | |
415 && !sym->attr.module_procedure) | |
416 { | |
417 /* Main program is mangled into MAIN__. */ | |
418 if (sym->attr.is_main_program) | |
419 return get_identifier ("MAIN__"); | |
420 | |
421 /* Intrinsic procedures are never mangled. */ | |
422 if (sym->attr.proc == PROC_INTRINSIC) | |
423 return get_identifier (sym->name); | |
424 | |
425 if (flag_underscoring) | |
426 { | |
427 has_underscore = strchr (sym->name, '_') != 0; | |
428 if (flag_second_underscore && has_underscore) | |
429 snprintf (name, sizeof name, "%s__", sym->name); | |
430 else | |
431 snprintf (name, sizeof name, "%s_", sym->name); | |
432 return get_identifier (name); | |
433 } | |
434 else | |
435 return get_identifier (sym->name); | |
436 } | |
437 else | |
438 { | |
439 snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); | |
440 return get_identifier (name); | |
441 } | |
442 } | |
443 | |
444 | |
445 void | |
446 gfc_set_decl_assembler_name (tree decl, tree name) | |
447 { | |
448 tree target_mangled = targetm.mangle_decl_assembler_name (decl, name); | |
449 SET_DECL_ASSEMBLER_NAME (decl, target_mangled); | |
450 } | |
451 | |
452 | |
453 /* Returns true if a variable of specified size should go on the stack. */ | |
454 | |
455 int | |
456 gfc_can_put_var_on_stack (tree size) | |
457 { | |
458 unsigned HOST_WIDE_INT low; | |
459 | |
460 if (!INTEGER_CST_P (size)) | |
461 return 0; | |
462 | |
463 if (flag_max_stack_var_size < 0) | |
464 return 1; | |
465 | |
466 if (!tree_fits_uhwi_p (size)) | |
467 return 0; | |
468 | |
469 low = TREE_INT_CST_LOW (size); | |
470 if (low > (unsigned HOST_WIDE_INT) flag_max_stack_var_size) | |
471 return 0; | |
472 | |
473 /* TODO: Set a per-function stack size limit. */ | |
474 | |
475 return 1; | |
476 } | |
477 | |
478 | |
479 /* gfc_finish_cray_pointee sets DECL_VALUE_EXPR for a Cray pointee to | |
480 an expression involving its corresponding pointer. There are | |
481 2 cases; one for variable size arrays, and one for everything else, | |
482 because variable-sized arrays require one fewer level of | |
483 indirection. */ | |
484 | |
485 static void | |
486 gfc_finish_cray_pointee (tree decl, gfc_symbol *sym) | |
487 { | |
488 tree ptr_decl = gfc_get_symbol_decl (sym->cp_pointer); | |
489 tree value; | |
490 | |
491 /* Parameters need to be dereferenced. */ | |
492 if (sym->cp_pointer->attr.dummy) | |
493 ptr_decl = build_fold_indirect_ref_loc (input_location, | |
494 ptr_decl); | |
495 | |
496 /* Check to see if we're dealing with a variable-sized array. */ | |
497 if (sym->attr.dimension | |
498 && TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE) | |
499 { | |
500 /* These decls will be dereferenced later, so we don't dereference | |
501 them here. */ | |
502 value = convert (TREE_TYPE (decl), ptr_decl); | |
503 } | |
504 else | |
505 { | |
506 ptr_decl = convert (build_pointer_type (TREE_TYPE (decl)), | |
507 ptr_decl); | |
508 value = build_fold_indirect_ref_loc (input_location, | |
509 ptr_decl); | |
510 } | |
511 | |
512 SET_DECL_VALUE_EXPR (decl, value); | |
513 DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
514 GFC_DECL_CRAY_POINTEE (decl) = 1; | |
515 } | |
516 | |
517 | |
518 /* Finish processing of a declaration without an initial value. */ | |
519 | |
520 static void | |
521 gfc_finish_decl (tree decl) | |
522 { | |
523 gcc_assert (TREE_CODE (decl) == PARM_DECL | |
524 || DECL_INITIAL (decl) == NULL_TREE); | |
525 | |
526 if (!VAR_P (decl)) | |
527 return; | |
528 | |
529 if (DECL_SIZE (decl) == NULL_TREE | |
530 && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE) | |
531 layout_decl (decl, 0); | |
532 | |
533 /* A few consistency checks. */ | |
534 /* A static variable with an incomplete type is an error if it is | |
535 initialized. Also if it is not file scope. Otherwise, let it | |
536 through, but if it is not `extern' then it may cause an error | |
537 message later. */ | |
538 /* An automatic variable with an incomplete type is an error. */ | |
539 | |
540 /* We should know the storage size. */ | |
541 gcc_assert (DECL_SIZE (decl) != NULL_TREE | |
542 || (TREE_STATIC (decl) | |
543 ? (!DECL_INITIAL (decl) || !DECL_CONTEXT (decl)) | |
544 : DECL_EXTERNAL (decl))); | |
545 | |
546 /* The storage size should be constant. */ | |
547 gcc_assert ((!DECL_EXTERNAL (decl) && !TREE_STATIC (decl)) | |
548 || !DECL_SIZE (decl) | |
549 || TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST); | |
550 } | |
551 | |
552 | |
553 /* Handle setting of GFC_DECL_SCALAR* on DECL. */ | |
554 | |
555 void | |
556 gfc_finish_decl_attrs (tree decl, symbol_attribute *attr) | |
557 { | |
558 if (!attr->dimension && !attr->codimension) | |
559 { | |
560 /* Handle scalar allocatable variables. */ | |
561 if (attr->allocatable) | |
562 { | |
563 gfc_allocate_lang_decl (decl); | |
564 GFC_DECL_SCALAR_ALLOCATABLE (decl) = 1; | |
565 } | |
566 /* Handle scalar pointer variables. */ | |
567 if (attr->pointer) | |
568 { | |
569 gfc_allocate_lang_decl (decl); | |
570 GFC_DECL_SCALAR_POINTER (decl) = 1; | |
571 } | |
572 } | |
573 } | |
574 | |
575 | |
576 /* Apply symbol attributes to a variable, and add it to the function scope. */ | |
577 | |
578 static void | |
579 gfc_finish_var_decl (tree decl, gfc_symbol * sym) | |
580 { | |
581 tree new_type; | |
582 | |
583 /* Set DECL_VALUE_EXPR for Cray Pointees. */ | |
584 if (sym->attr.cray_pointee) | |
585 gfc_finish_cray_pointee (decl, sym); | |
586 | |
587 /* TREE_ADDRESSABLE means the address of this variable is actually needed. | |
588 This is the equivalent of the TARGET variables. | |
589 We also need to set this if the variable is passed by reference in a | |
590 CALL statement. */ | |
591 if (sym->attr.target) | |
592 TREE_ADDRESSABLE (decl) = 1; | |
593 | |
594 /* If it wasn't used we wouldn't be getting it. */ | |
595 TREE_USED (decl) = 1; | |
596 | |
597 if (sym->attr.flavor == FL_PARAMETER | |
598 && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) | |
599 TREE_READONLY (decl) = 1; | |
600 | |
601 /* Chain this decl to the pending declarations. Don't do pushdecl() | |
602 because this would add them to the current scope rather than the | |
603 function scope. */ | |
604 if (current_function_decl != NULL_TREE) | |
605 { | |
606 if (sym->ns->proc_name->backend_decl == current_function_decl | |
607 || sym->result == sym) | |
608 gfc_add_decl_to_function (decl); | |
609 else if (sym->ns->proc_name->attr.flavor == FL_LABEL) | |
610 /* This is a BLOCK construct. */ | |
611 add_decl_as_local (decl); | |
612 else | |
613 gfc_add_decl_to_parent_function (decl); | |
614 } | |
615 | |
616 if (sym->attr.cray_pointee) | |
617 return; | |
618 | |
619 if(sym->attr.is_bind_c == 1 && sym->binding_label) | |
620 { | |
621 /* We need to put variables that are bind(c) into the common | |
622 segment of the object file, because this is what C would do. | |
623 gfortran would typically put them in either the BSS or | |
624 initialized data segments, and only mark them as common if | |
625 they were part of common blocks. However, if they are not put | |
626 into common space, then C cannot initialize global Fortran | |
627 variables that it interoperates with and the draft says that | |
628 either Fortran or C should be able to initialize it (but not | |
629 both, of course.) (J3/04-007, section 15.3). */ | |
630 TREE_PUBLIC(decl) = 1; | |
631 DECL_COMMON(decl) = 1; | |
632 if (sym->attr.access == ACCESS_PRIVATE && !sym->attr.public_used) | |
633 { | |
634 DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN; | |
635 DECL_VISIBILITY_SPECIFIED (decl) = true; | |
636 } | |
637 } | |
638 | |
639 /* If a variable is USE associated, it's always external. */ | |
640 if (sym->attr.use_assoc || sym->attr.used_in_submodule) | |
641 { | |
642 DECL_EXTERNAL (decl) = 1; | |
643 TREE_PUBLIC (decl) = 1; | |
644 } | |
645 else if (sym->fn_result_spec && !sym->ns->proc_name->module) | |
646 { | |
647 | |
648 if (sym->ns->proc_name->attr.if_source != IFSRC_DECL) | |
649 DECL_EXTERNAL (decl) = 1; | |
650 else | |
651 TREE_STATIC (decl) = 1; | |
652 | |
653 TREE_PUBLIC (decl) = 1; | |
654 } | |
655 else if (sym->module && !sym->attr.result && !sym->attr.dummy) | |
656 { | |
657 /* TODO: Don't set sym->module for result or dummy variables. */ | |
658 gcc_assert (current_function_decl == NULL_TREE || sym->result == sym); | |
659 | |
660 TREE_PUBLIC (decl) = 1; | |
661 TREE_STATIC (decl) = 1; | |
662 if (sym->attr.access == ACCESS_PRIVATE && !sym->attr.public_used) | |
663 { | |
664 DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN; | |
665 DECL_VISIBILITY_SPECIFIED (decl) = true; | |
666 } | |
667 } | |
668 | |
669 /* Derived types are a bit peculiar because of the possibility of | |
670 a default initializer; this must be applied each time the variable | |
671 comes into scope it therefore need not be static. These variables | |
672 are SAVE_NONE but have an initializer. Otherwise explicitly | |
673 initialized variables are SAVE_IMPLICIT and explicitly saved are | |
674 SAVE_EXPLICIT. */ | |
675 if (!sym->attr.use_assoc | |
676 && (sym->attr.save != SAVE_NONE || sym->attr.data | |
677 || (sym->value && sym->ns->proc_name->attr.is_main_program) | |
678 || (flag_coarray == GFC_FCOARRAY_LIB | |
679 && sym->attr.codimension && !sym->attr.allocatable))) | |
680 TREE_STATIC (decl) = 1; | |
681 | |
682 /* If derived-type variables with DTIO procedures are not made static | |
683 some bits of code referencing them get optimized away. | |
684 TODO Understand why this is so and fix it. */ | |
685 if (!sym->attr.use_assoc | |
686 && ((sym->ts.type == BT_DERIVED | |
687 && sym->ts.u.derived->attr.has_dtio_procs) | |
688 || (sym->ts.type == BT_CLASS | |
689 && CLASS_DATA (sym)->ts.u.derived->attr.has_dtio_procs))) | |
690 TREE_STATIC (decl) = 1; | |
691 | |
692 if (sym->attr.volatile_) | |
693 { | |
694 TREE_THIS_VOLATILE (decl) = 1; | |
695 TREE_SIDE_EFFECTS (decl) = 1; | |
696 new_type = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE); | |
697 TREE_TYPE (decl) = new_type; | |
698 } | |
699 | |
700 /* Keep variables larger than max-stack-var-size off stack. */ | |
701 if (!sym->ns->proc_name->attr.recursive && !sym->attr.automatic | |
702 && INTEGER_CST_P (DECL_SIZE_UNIT (decl)) | |
703 && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) | |
704 /* Put variable length auto array pointers always into stack. */ | |
705 && (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE | |
706 || sym->attr.dimension == 0 | |
707 || sym->as->type != AS_EXPLICIT | |
708 || sym->attr.pointer | |
709 || sym->attr.allocatable) | |
710 && !DECL_ARTIFICIAL (decl)) | |
711 { | |
712 TREE_STATIC (decl) = 1; | |
713 | |
714 /* Because the size of this variable isn't known until now, we may have | |
715 greedily added an initializer to this variable (in build_init_assign) | |
716 even though the max-stack-var-size indicates the variable should be | |
717 static. Therefore we rip out the automatic initializer here and | |
718 replace it with a static one. */ | |
719 gfc_symtree *st = gfc_find_symtree (sym->ns->sym_root, sym->name); | |
720 gfc_code *prev = NULL; | |
721 gfc_code *code = sym->ns->code; | |
722 while (code && code->op == EXEC_INIT_ASSIGN) | |
723 { | |
724 /* Look for an initializer meant for this symbol. */ | |
725 if (code->expr1->symtree == st) | |
726 { | |
727 if (prev) | |
728 prev->next = code->next; | |
729 else | |
730 sym->ns->code = code->next; | |
731 | |
732 break; | |
733 } | |
734 | |
735 prev = code; | |
736 code = code->next; | |
737 } | |
738 if (code && code->op == EXEC_INIT_ASSIGN) | |
739 { | |
740 /* Keep the init expression for a static initializer. */ | |
741 sym->value = code->expr2; | |
742 /* Cleanup the defunct code object, without freeing the init expr. */ | |
743 code->expr2 = NULL; | |
744 gfc_free_statement (code); | |
745 free (code); | |
746 } | |
747 } | |
748 | |
749 /* Handle threadprivate variables. */ | |
750 if (sym->attr.threadprivate | |
751 && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) | |
752 set_decl_tls_model (decl, decl_default_tls_model (decl)); | |
753 | |
754 gfc_finish_decl_attrs (decl, &sym->attr); | |
755 } | |
756 | |
757 | |
758 /* Allocate the lang-specific part of a decl. */ | |
759 | |
760 void | |
761 gfc_allocate_lang_decl (tree decl) | |
762 { | |
763 if (DECL_LANG_SPECIFIC (decl) == NULL) | |
764 DECL_LANG_SPECIFIC (decl) = ggc_cleared_alloc<struct lang_decl> (); | |
765 } | |
766 | |
767 /* Remember a symbol to generate initialization/cleanup code at function | |
768 entry/exit. */ | |
769 | |
770 static void | |
771 gfc_defer_symbol_init (gfc_symbol * sym) | |
772 { | |
773 gfc_symbol *p; | |
774 gfc_symbol *last; | |
775 gfc_symbol *head; | |
776 | |
777 /* Don't add a symbol twice. */ | |
778 if (sym->tlink) | |
779 return; | |
780 | |
781 last = head = sym->ns->proc_name; | |
782 p = last->tlink; | |
783 | |
784 /* Make sure that setup code for dummy variables which are used in the | |
785 setup of other variables is generated first. */ | |
786 if (sym->attr.dummy) | |
787 { | |
788 /* Find the first dummy arg seen after us, or the first non-dummy arg. | |
789 This is a circular list, so don't go past the head. */ | |
790 while (p != head | |
791 && (!p->attr.dummy || p->dummy_order > sym->dummy_order)) | |
792 { | |
793 last = p; | |
794 p = p->tlink; | |
795 } | |
796 } | |
797 /* Insert in between last and p. */ | |
798 last->tlink = sym; | |
799 sym->tlink = p; | |
800 } | |
801 | |
802 | |
803 /* Used in gfc_get_symbol_decl and gfc_get_derived_type to obtain the | |
804 backend_decl for a module symbol, if it all ready exists. If the | |
805 module gsymbol does not exist, it is created. If the symbol does | |
806 not exist, it is added to the gsymbol namespace. Returns true if | |
807 an existing backend_decl is found. */ | |
808 | |
809 bool | |
810 gfc_get_module_backend_decl (gfc_symbol *sym) | |
811 { | |
812 gfc_gsymbol *gsym; | |
813 gfc_symbol *s; | |
814 gfc_symtree *st; | |
815 | |
816 gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
817 | |
818 if (!gsym || (gsym->ns && gsym->type == GSYM_MODULE)) | |
819 { | |
820 st = NULL; | |
821 s = NULL; | |
822 | |
823 /* Check for a symbol with the same name. */ | |
824 if (gsym) | |
825 gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
826 | |
827 if (!s) | |
828 { | |
829 if (!gsym) | |
830 { | |
831 gsym = gfc_get_gsymbol (sym->module); | |
832 gsym->type = GSYM_MODULE; | |
833 gsym->ns = gfc_get_namespace (NULL, 0); | |
834 } | |
835 | |
836 st = gfc_new_symtree (&gsym->ns->sym_root, sym->name); | |
837 st->n.sym = sym; | |
838 sym->refs++; | |
839 } | |
840 else if (gfc_fl_struct (sym->attr.flavor)) | |
841 { | |
842 if (s && s->attr.flavor == FL_PROCEDURE) | |
843 { | |
844 gfc_interface *intr; | |
845 gcc_assert (s->attr.generic); | |
846 for (intr = s->generic; intr; intr = intr->next) | |
847 if (gfc_fl_struct (intr->sym->attr.flavor)) | |
848 { | |
849 s = intr->sym; | |
850 break; | |
851 } | |
852 } | |
853 | |
854 /* Normally we can assume that s is a derived-type symbol since it | |
855 shares a name with the derived-type sym. However if sym is a | |
856 STRUCTURE, it may in fact share a name with any other basic type | |
857 variable. If s is in fact of derived type then we can continue | |
858 looking for a duplicate type declaration. */ | |
859 if (sym->attr.flavor == FL_STRUCT && s->ts.type == BT_DERIVED) | |
860 { | |
861 s = s->ts.u.derived; | |
862 } | |
863 | |
864 if (gfc_fl_struct (s->attr.flavor) && !s->backend_decl) | |
865 { | |
866 if (s->attr.flavor == FL_UNION) | |
867 s->backend_decl = gfc_get_union_type (s); | |
868 else | |
869 s->backend_decl = gfc_get_derived_type (s); | |
870 } | |
871 gfc_copy_dt_decls_ifequal (s, sym, true); | |
872 return true; | |
873 } | |
874 else if (s->backend_decl) | |
875 { | |
876 if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
877 gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, | |
878 true); | |
879 else if (sym->ts.type == BT_CHARACTER) | |
880 sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
881 sym->backend_decl = s->backend_decl; | |
882 return true; | |
883 } | |
884 } | |
885 return false; | |
886 } | |
887 | |
888 | |
889 /* Create an array index type variable with function scope. */ | |
890 | |
891 static tree | |
892 create_index_var (const char * pfx, int nest) | |
893 { | |
894 tree decl; | |
895 | |
896 decl = gfc_create_var_np (gfc_array_index_type, pfx); | |
897 if (nest) | |
898 gfc_add_decl_to_parent_function (decl); | |
899 else | |
900 gfc_add_decl_to_function (decl); | |
901 return decl; | |
902 } | |
903 | |
904 | |
905 /* Create variables to hold all the non-constant bits of info for a | |
906 descriptorless array. Remember these in the lang-specific part of the | |
907 type. */ | |
908 | |
909 static void | |
910 gfc_build_qualified_array (tree decl, gfc_symbol * sym) | |
911 { | |
912 tree type; | |
913 int dim; | |
914 int nest; | |
915 gfc_namespace* procns; | |
916 symbol_attribute *array_attr; | |
917 gfc_array_spec *as; | |
918 bool is_classarray = IS_CLASS_ARRAY (sym); | |
919 | |
920 type = TREE_TYPE (decl); | |
921 array_attr = is_classarray ? &CLASS_DATA (sym)->attr : &sym->attr; | |
922 as = is_classarray ? CLASS_DATA (sym)->as : sym->as; | |
923 | |
924 /* We just use the descriptor, if there is one. */ | |
925 if (GFC_DESCRIPTOR_TYPE_P (type)) | |
926 return; | |
927 | |
928 gcc_assert (GFC_ARRAY_TYPE_P (type)); | |
929 procns = gfc_find_proc_namespace (sym->ns); | |
930 nest = (procns->proc_name->backend_decl != current_function_decl) | |
931 && !sym->attr.contained; | |
932 | |
933 if (array_attr->codimension && flag_coarray == GFC_FCOARRAY_LIB | |
934 && as->type != AS_ASSUMED_SHAPE | |
935 && GFC_TYPE_ARRAY_CAF_TOKEN (type) == NULL_TREE) | |
936 { | |
937 tree token; | |
938 tree token_type = build_qualified_type (pvoid_type_node, | |
939 TYPE_QUAL_RESTRICT); | |
940 | |
941 if (sym->module && (sym->attr.use_assoc | |
942 || sym->ns->proc_name->attr.flavor == FL_MODULE)) | |
943 { | |
944 tree token_name | |
945 = get_identifier (gfc_get_string (GFC_PREFIX ("caf_token%s"), | |
946 IDENTIFIER_POINTER (gfc_sym_mangled_identifier (sym)))); | |
947 token = build_decl (DECL_SOURCE_LOCATION (decl), VAR_DECL, token_name, | |
948 token_type); | |
949 if (sym->attr.use_assoc) | |
950 DECL_EXTERNAL (token) = 1; | |
951 else | |
952 TREE_STATIC (token) = 1; | |
953 | |
954 TREE_PUBLIC (token) = 1; | |
955 | |
956 if (sym->attr.access == ACCESS_PRIVATE && !sym->attr.public_used) | |
957 { | |
958 DECL_VISIBILITY (token) = VISIBILITY_HIDDEN; | |
959 DECL_VISIBILITY_SPECIFIED (token) = true; | |
960 } | |
961 } | |
962 else | |
963 { | |
964 token = gfc_create_var_np (token_type, "caf_token"); | |
965 TREE_STATIC (token) = 1; | |
966 } | |
967 | |
968 GFC_TYPE_ARRAY_CAF_TOKEN (type) = token; | |
969 DECL_ARTIFICIAL (token) = 1; | |
970 DECL_NONALIASED (token) = 1; | |
971 | |
972 if (sym->module && !sym->attr.use_assoc) | |
973 { | |
974 pushdecl (token); | |
975 DECL_CONTEXT (token) = sym->ns->proc_name->backend_decl; | |
976 gfc_module_add_decl (cur_module, token); | |
977 } | |
978 else if (sym->attr.host_assoc | |
979 && TREE_CODE (DECL_CONTEXT (current_function_decl)) | |
980 != TRANSLATION_UNIT_DECL) | |
981 gfc_add_decl_to_parent_function (token); | |
982 else | |
983 gfc_add_decl_to_function (token); | |
984 } | |
985 | |
986 for (dim = 0; dim < GFC_TYPE_ARRAY_RANK (type); dim++) | |
987 { | |
988 if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
989 { | |
990 GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
991 TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
992 } | |
993 /* Don't try to use the unknown bound for assumed shape arrays. */ | |
994 if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE | |
995 && (as->type != AS_ASSUMED_SIZE | |
996 || dim < GFC_TYPE_ARRAY_RANK (type) - 1)) | |
997 { | |
998 GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
999 TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
1000 } | |
1001 | |
1002 if (GFC_TYPE_ARRAY_STRIDE (type, dim) == NULL_TREE) | |
1003 { | |
1004 GFC_TYPE_ARRAY_STRIDE (type, dim) = create_index_var ("stride", nest); | |
1005 TREE_NO_WARNING (GFC_TYPE_ARRAY_STRIDE (type, dim)) = 1; | |
1006 } | |
1007 } | |
1008 for (dim = GFC_TYPE_ARRAY_RANK (type); | |
1009 dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type); dim++) | |
1010 { | |
1011 if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
1012 { | |
1013 GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
1014 TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
1015 } | |
1016 /* Don't try to use the unknown ubound for the last coarray dimension. */ | |
1017 if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE | |
1018 && dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type) - 1) | |
1019 { | |
1020 GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
1021 TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
1022 } | |
1023 } | |
1024 if (GFC_TYPE_ARRAY_OFFSET (type) == NULL_TREE) | |
1025 { | |
1026 GFC_TYPE_ARRAY_OFFSET (type) = gfc_create_var_np (gfc_array_index_type, | |
1027 "offset"); | |
1028 TREE_NO_WARNING (GFC_TYPE_ARRAY_OFFSET (type)) = 1; | |
1029 | |
1030 if (nest) | |
1031 gfc_add_decl_to_parent_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
1032 else | |
1033 gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
1034 } | |
1035 | |
1036 if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE | |
1037 && as->type != AS_ASSUMED_SIZE) | |
1038 { | |
1039 GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest); | |
1040 TREE_NO_WARNING (GFC_TYPE_ARRAY_SIZE (type)) = 1; | |
1041 } | |
1042 | |
1043 if (POINTER_TYPE_P (type)) | |
1044 { | |
1045 gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type))); | |
1046 gcc_assert (TYPE_LANG_SPECIFIC (type) | |
1047 == TYPE_LANG_SPECIFIC (TREE_TYPE (type))); | |
1048 type = TREE_TYPE (type); | |
1049 } | |
1050 | |
1051 if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type)) | |
1052 { | |
1053 tree size, range; | |
1054 | |
1055 size = fold_build2_loc (input_location, MINUS_EXPR, gfc_array_index_type, | |
1056 GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node); | |
1057 range = build_range_type (gfc_array_index_type, gfc_index_zero_node, | |
1058 size); | |
1059 TYPE_DOMAIN (type) = range; | |
1060 layout_type (type); | |
1061 } | |
1062 | |
1063 if (TYPE_NAME (type) != NULL_TREE && as->rank > 0 | |
1064 && GFC_TYPE_ARRAY_UBOUND (type, as->rank - 1) != NULL_TREE | |
1065 && VAR_P (GFC_TYPE_ARRAY_UBOUND (type, as->rank - 1))) | |
1066 { | |
1067 tree gtype = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
1068 | |
1069 for (dim = 0; dim < as->rank - 1; dim++) | |
1070 { | |
1071 gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
1072 gtype = TREE_TYPE (gtype); | |
1073 } | |
1074 gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
1075 if (TYPE_MAX_VALUE (TYPE_DOMAIN (gtype)) == NULL) | |
1076 TYPE_NAME (type) = NULL_TREE; | |
1077 } | |
1078 | |
1079 if (TYPE_NAME (type) == NULL_TREE) | |
1080 { | |
1081 tree gtype = TREE_TYPE (type), rtype, type_decl; | |
1082 | |
1083 for (dim = as->rank - 1; dim >= 0; dim--) | |
1084 { | |
1085 tree lbound, ubound; | |
1086 lbound = GFC_TYPE_ARRAY_LBOUND (type, dim); | |
1087 ubound = GFC_TYPE_ARRAY_UBOUND (type, dim); | |
1088 rtype = build_range_type (gfc_array_index_type, lbound, ubound); | |
1089 gtype = build_array_type (gtype, rtype); | |
1090 /* Ensure the bound variables aren't optimized out at -O0. | |
1091 For -O1 and above they often will be optimized out, but | |
1092 can be tracked by VTA. Also set DECL_NAMELESS, so that | |
1093 the artificial lbound.N or ubound.N DECL_NAME doesn't | |
1094 end up in debug info. */ | |
1095 if (lbound | |
1096 && VAR_P (lbound) | |
1097 && DECL_ARTIFICIAL (lbound) | |
1098 && DECL_IGNORED_P (lbound)) | |
1099 { | |
1100 if (DECL_NAME (lbound) | |
1101 && strstr (IDENTIFIER_POINTER (DECL_NAME (lbound)), | |
1102 "lbound") != 0) | |
1103 DECL_NAMELESS (lbound) = 1; | |
1104 DECL_IGNORED_P (lbound) = 0; | |
1105 } | |
1106 if (ubound | |
1107 && VAR_P (ubound) | |
1108 && DECL_ARTIFICIAL (ubound) | |
1109 && DECL_IGNORED_P (ubound)) | |
1110 { | |
1111 if (DECL_NAME (ubound) | |
1112 && strstr (IDENTIFIER_POINTER (DECL_NAME (ubound)), | |
1113 "ubound") != 0) | |
1114 DECL_NAMELESS (ubound) = 1; | |
1115 DECL_IGNORED_P (ubound) = 0; | |
1116 } | |
1117 } | |
1118 TYPE_NAME (type) = type_decl = build_decl (input_location, | |
1119 TYPE_DECL, NULL, gtype); | |
1120 DECL_ORIGINAL_TYPE (type_decl) = gtype; | |
1121 } | |
1122 } | |
1123 | |
1124 | |
1125 /* For some dummy arguments we don't use the actual argument directly. | |
1126 Instead we create a local decl and use that. This allows us to perform | |
1127 initialization, and construct full type information. */ | |
1128 | |
1129 static tree | |
1130 gfc_build_dummy_array_decl (gfc_symbol * sym, tree dummy) | |
1131 { | |
1132 tree decl; | |
1133 tree type; | |
1134 gfc_array_spec *as; | |
1135 symbol_attribute *array_attr; | |
1136 char *name; | |
1137 gfc_packed packed; | |
1138 int n; | |
1139 bool known_size; | |
1140 bool is_classarray = IS_CLASS_ARRAY (sym); | |
1141 | |
1142 /* Use the array as and attr. */ | |
1143 as = is_classarray ? CLASS_DATA (sym)->as : sym->as; | |
1144 array_attr = is_classarray ? &CLASS_DATA (sym)->attr : &sym->attr; | |
1145 | |
1146 /* The dummy is returned for pointer, allocatable or assumed rank arrays. | |
1147 For class arrays the information if sym is an allocatable or pointer | |
1148 object needs to be checked explicitly (IS_CLASS_ARRAY can be false for | |
1149 too many reasons to be of use here). */ | |
1150 if ((sym->ts.type != BT_CLASS && sym->attr.pointer) | |
1151 || (sym->ts.type == BT_CLASS && CLASS_DATA (sym)->attr.class_pointer) | |
1152 || array_attr->allocatable | |
1153 || (as && as->type == AS_ASSUMED_RANK)) | |
1154 return dummy; | |
1155 | |
1156 /* Add to list of variables if not a fake result variable. | |
1157 These symbols are set on the symbol only, not on the class component. */ | |
1158 if (sym->attr.result || sym->attr.dummy) | |
1159 gfc_defer_symbol_init (sym); | |
1160 | |
1161 /* For a class array the array descriptor is in the _data component, while | |
1162 for a regular array the TREE_TYPE of the dummy is a pointer to the | |
1163 descriptor. */ | |
1164 type = TREE_TYPE (is_classarray ? gfc_class_data_get (dummy) | |
1165 : TREE_TYPE (dummy)); | |
1166 /* type now is the array descriptor w/o any indirection. */ | |
1167 gcc_assert (TREE_CODE (dummy) == PARM_DECL | |
1168 && POINTER_TYPE_P (TREE_TYPE (dummy))); | |
1169 | |
1170 /* Do we know the element size? */ | |
1171 known_size = sym->ts.type != BT_CHARACTER | |
1172 || INTEGER_CST_P (sym->ts.u.cl->backend_decl); | |
1173 | |
1174 if (known_size && !GFC_DESCRIPTOR_TYPE_P (type)) | |
1175 { | |
1176 /* For descriptorless arrays with known element size the actual | |
1177 argument is sufficient. */ | |
1178 gfc_build_qualified_array (dummy, sym); | |
1179 return dummy; | |
1180 } | |
1181 | |
1182 if (GFC_DESCRIPTOR_TYPE_P (type)) | |
1183 { | |
1184 /* Create a descriptorless array pointer. */ | |
1185 packed = PACKED_NO; | |
1186 | |
1187 /* Even when -frepack-arrays is used, symbols with TARGET attribute | |
1188 are not repacked. */ | |
1189 if (!flag_repack_arrays || sym->attr.target) | |
1190 { | |
1191 if (as->type == AS_ASSUMED_SIZE) | |
1192 packed = PACKED_FULL; | |
1193 } | |
1194 else | |
1195 { | |
1196 if (as->type == AS_EXPLICIT) | |
1197 { | |
1198 packed = PACKED_FULL; | |
1199 for (n = 0; n < as->rank; n++) | |
1200 { | |
1201 if (!(as->upper[n] | |
1202 && as->lower[n] | |
1203 && as->upper[n]->expr_type == EXPR_CONSTANT | |
1204 && as->lower[n]->expr_type == EXPR_CONSTANT)) | |
1205 { | |
1206 packed = PACKED_PARTIAL; | |
1207 break; | |
1208 } | |
1209 } | |
1210 } | |
1211 else | |
1212 packed = PACKED_PARTIAL; | |
1213 } | |
1214 | |
1215 /* For classarrays the element type is required, but | |
1216 gfc_typenode_for_spec () returns the array descriptor. */ | |
1217 type = is_classarray ? gfc_get_element_type (type) | |
1218 : gfc_typenode_for_spec (&sym->ts); | |
1219 type = gfc_get_nodesc_array_type (type, as, packed, | |
1220 !sym->attr.target); | |
1221 } | |
1222 else | |
1223 { | |
1224 /* We now have an expression for the element size, so create a fully | |
1225 qualified type. Reset sym->backend decl or this will just return the | |
1226 old type. */ | |
1227 DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
1228 sym->backend_decl = NULL_TREE; | |
1229 type = gfc_sym_type (sym); | |
1230 packed = PACKED_FULL; | |
1231 } | |
1232 | |
1233 ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0); | |
1234 decl = build_decl (input_location, | |
1235 VAR_DECL, get_identifier (name), type); | |
1236 | |
1237 DECL_ARTIFICIAL (decl) = 1; | |
1238 DECL_NAMELESS (decl) = 1; | |
1239 TREE_PUBLIC (decl) = 0; | |
1240 TREE_STATIC (decl) = 0; | |
1241 DECL_EXTERNAL (decl) = 0; | |
1242 | |
1243 /* Avoid uninitialized warnings for optional dummy arguments. */ | |
1244 if (sym->attr.optional) | |
1245 TREE_NO_WARNING (decl) = 1; | |
1246 | |
1247 /* We should never get deferred shape arrays here. We used to because of | |
1248 frontend bugs. */ | |
1249 gcc_assert (as->type != AS_DEFERRED); | |
1250 | |
1251 if (packed == PACKED_PARTIAL) | |
1252 GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1; | |
1253 else if (packed == PACKED_FULL) | |
1254 GFC_DECL_PACKED_ARRAY (decl) = 1; | |
1255 | |
1256 gfc_build_qualified_array (decl, sym); | |
1257 | |
1258 if (DECL_LANG_SPECIFIC (dummy)) | |
1259 DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (dummy); | |
1260 else | |
1261 gfc_allocate_lang_decl (decl); | |
1262 | |
1263 GFC_DECL_SAVED_DESCRIPTOR (decl) = dummy; | |
1264 | |
1265 if (sym->ns->proc_name->backend_decl == current_function_decl | |
1266 || sym->attr.contained) | |
1267 gfc_add_decl_to_function (decl); | |
1268 else | |
1269 gfc_add_decl_to_parent_function (decl); | |
1270 | |
1271 return decl; | |
1272 } | |
1273 | |
1274 /* For symbol SYM with GFC_DECL_SAVED_DESCRIPTOR used in contained | |
1275 function add a VAR_DECL to the current function with DECL_VALUE_EXPR | |
1276 pointing to the artificial variable for debug info purposes. */ | |
1277 | |
1278 static void | |
1279 gfc_nonlocal_dummy_array_decl (gfc_symbol *sym) | |
1280 { | |
1281 tree decl, dummy; | |
1282 | |
1283 if (! nonlocal_dummy_decl_pset) | |
1284 nonlocal_dummy_decl_pset = new hash_set<tree>; | |
1285 | |
1286 if (nonlocal_dummy_decl_pset->add (sym->backend_decl)) | |
1287 return; | |
1288 | |
1289 dummy = GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl); | |
1290 decl = build_decl (input_location, VAR_DECL, DECL_NAME (dummy), | |
1291 TREE_TYPE (sym->backend_decl)); | |
1292 DECL_ARTIFICIAL (decl) = 0; | |
1293 TREE_USED (decl) = 1; | |
1294 TREE_PUBLIC (decl) = 0; | |
1295 TREE_STATIC (decl) = 0; | |
1296 DECL_EXTERNAL (decl) = 0; | |
1297 if (DECL_BY_REFERENCE (dummy)) | |
1298 DECL_BY_REFERENCE (decl) = 1; | |
1299 DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (sym->backend_decl); | |
1300 SET_DECL_VALUE_EXPR (decl, sym->backend_decl); | |
1301 DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
1302 DECL_CONTEXT (decl) = DECL_CONTEXT (sym->backend_decl); | |
1303 DECL_CHAIN (decl) = nonlocal_dummy_decls; | |
1304 nonlocal_dummy_decls = decl; | |
1305 } | |
1306 | |
1307 /* Return a constant or a variable to use as a string length. Does not | |
1308 add the decl to the current scope. */ | |
1309 | |
1310 static tree | |
1311 gfc_create_string_length (gfc_symbol * sym) | |
1312 { | |
1313 gcc_assert (sym->ts.u.cl); | |
1314 gfc_conv_const_charlen (sym->ts.u.cl); | |
1315 | |
1316 if (sym->ts.u.cl->backend_decl == NULL_TREE) | |
1317 { | |
1318 tree length; | |
1319 const char *name; | |
1320 | |
1321 /* The string length variable shall be in static memory if it is either | |
1322 explicitly SAVED, a module variable or with -fno-automatic. Only | |
1323 relevant is "len=:" - otherwise, it is either a constant length or | |
1324 it is an automatic variable. */ | |
1325 bool static_length = sym->attr.save | |
1326 || sym->ns->proc_name->attr.flavor == FL_MODULE | |
1327 || (flag_max_stack_var_size == 0 | |
1328 && sym->ts.deferred && !sym->attr.dummy | |
1329 && !sym->attr.result && !sym->attr.function); | |
1330 | |
1331 /* Also prefix the mangled name. We need to call GFC_PREFIX for static | |
1332 variables as some systems do not support the "." in the assembler name. | |
1333 For nonstatic variables, the "." does not appear in assembler. */ | |
1334 if (static_length) | |
1335 { | |
1336 if (sym->module) | |
1337 name = gfc_get_string (GFC_PREFIX ("%s_MOD_%s"), sym->module, | |
1338 sym->name); | |
1339 else | |
1340 name = gfc_get_string (GFC_PREFIX ("%s"), sym->name); | |
1341 } | |
1342 else if (sym->module) | |
1343 name = gfc_get_string (".__%s_MOD_%s", sym->module, sym->name); | |
1344 else | |
1345 name = gfc_get_string (".%s", sym->name); | |
1346 | |
1347 length = build_decl (input_location, | |
1348 VAR_DECL, get_identifier (name), | |
1349 gfc_charlen_type_node); | |
1350 DECL_ARTIFICIAL (length) = 1; | |
1351 TREE_USED (length) = 1; | |
1352 if (sym->ns->proc_name->tlink != NULL) | |
1353 gfc_defer_symbol_init (sym); | |
1354 | |
1355 sym->ts.u.cl->backend_decl = length; | |
1356 | |
1357 if (static_length) | |
1358 TREE_STATIC (length) = 1; | |
1359 | |
1360 if (sym->ns->proc_name->attr.flavor == FL_MODULE | |
1361 && (sym->attr.access != ACCESS_PRIVATE || sym->attr.public_used)) | |
1362 TREE_PUBLIC (length) = 1; | |
1363 } | |
1364 | |
1365 gcc_assert (sym->ts.u.cl->backend_decl != NULL_TREE); | |
1366 return sym->ts.u.cl->backend_decl; | |
1367 } | |
1368 | |
1369 /* If a variable is assigned a label, we add another two auxiliary | |
1370 variables. */ | |
1371 | |
1372 static void | |
1373 gfc_add_assign_aux_vars (gfc_symbol * sym) | |
1374 { | |
1375 tree addr; | |
1376 tree length; | |
1377 tree decl; | |
1378 | |
1379 gcc_assert (sym->backend_decl); | |
1380 | |
1381 decl = sym->backend_decl; | |
1382 gfc_allocate_lang_decl (decl); | |
1383 GFC_DECL_ASSIGN (decl) = 1; | |
1384 length = build_decl (input_location, | |
1385 VAR_DECL, create_tmp_var_name (sym->name), | |
1386 gfc_charlen_type_node); | |
1387 addr = build_decl (input_location, | |
1388 VAR_DECL, create_tmp_var_name (sym->name), | |
1389 pvoid_type_node); | |
1390 gfc_finish_var_decl (length, sym); | |
1391 gfc_finish_var_decl (addr, sym); | |
1392 /* STRING_LENGTH is also used as flag. Less than -1 means that | |
1393 ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the | |
1394 target label's address. Otherwise, value is the length of a format string | |
1395 and ASSIGN_ADDR is its address. */ | |
1396 if (TREE_STATIC (length)) | |
1397 DECL_INITIAL (length) = build_int_cst (gfc_charlen_type_node, -2); | |
1398 else | |
1399 gfc_defer_symbol_init (sym); | |
1400 | |
1401 GFC_DECL_STRING_LEN (decl) = length; | |
1402 GFC_DECL_ASSIGN_ADDR (decl) = addr; | |
1403 } | |
1404 | |
1405 | |
1406 static tree | |
1407 add_attributes_to_decl (symbol_attribute sym_attr, tree list) | |
1408 { | |
1409 unsigned id; | |
1410 tree attr; | |
1411 | |
1412 for (id = 0; id < EXT_ATTR_NUM; id++) | |
1413 if (sym_attr.ext_attr & (1 << id)) | |
1414 { | |
1415 attr = build_tree_list ( | |
1416 get_identifier (ext_attr_list[id].middle_end_name), | |
1417 NULL_TREE); | |
1418 list = chainon (list, attr); | |
1419 } | |
1420 | |
1421 if (sym_attr.omp_declare_target_link) | |
1422 list = tree_cons (get_identifier ("omp declare target link"), | |
1423 NULL_TREE, list); | |
1424 else if (sym_attr.omp_declare_target) | |
1425 list = tree_cons (get_identifier ("omp declare target"), | |
1426 NULL_TREE, list); | |
1427 | |
1428 if (sym_attr.oacc_function) | |
1429 { | |
1430 tree dims = NULL_TREE; | |
1431 int ix; | |
1432 int level = sym_attr.oacc_function - 1; | |
1433 | |
1434 for (ix = GOMP_DIM_MAX; ix--;) | |
1435 dims = tree_cons (build_int_cst (boolean_type_node, ix >= level), | |
1436 integer_zero_node, dims); | |
1437 | |
1438 list = tree_cons (get_identifier ("oacc function"), | |
1439 dims, list); | |
1440 } | |
1441 | |
1442 return list; | |
1443 } | |
1444 | |
1445 | |
1446 static void build_function_decl (gfc_symbol * sym, bool global); | |
1447 | |
1448 | |
1449 /* Return the decl for a gfc_symbol, create it if it doesn't already | |
1450 exist. */ | |
1451 | |
1452 tree | |
1453 gfc_get_symbol_decl (gfc_symbol * sym) | |
1454 { | |
1455 tree decl; | |
1456 tree length = NULL_TREE; | |
1457 tree attributes; | |
1458 int byref; | |
1459 bool intrinsic_array_parameter = false; | |
1460 bool fun_or_res; | |
1461 | |
1462 gcc_assert (sym->attr.referenced | |
1463 || sym->attr.flavor == FL_PROCEDURE | |
1464 || sym->attr.use_assoc | |
1465 || sym->attr.used_in_submodule | |
1466 || sym->ns->proc_name->attr.if_source == IFSRC_IFBODY | |
1467 || (sym->module && sym->attr.if_source != IFSRC_DECL | |
1468 && sym->backend_decl)); | |
1469 | |
1470 if (sym->ns && sym->ns->proc_name && sym->ns->proc_name->attr.function) | |
1471 byref = gfc_return_by_reference (sym->ns->proc_name); | |
1472 else | |
1473 byref = 0; | |
1474 | |
1475 /* Make sure that the vtab for the declared type is completed. */ | |
1476 if (sym->ts.type == BT_CLASS) | |
1477 { | |
1478 gfc_component *c = CLASS_DATA (sym); | |
1479 if (!c->ts.u.derived->backend_decl) | |
1480 { | |
1481 gfc_find_derived_vtab (c->ts.u.derived); | |
1482 gfc_get_derived_type (sym->ts.u.derived); | |
1483 } | |
1484 } | |
1485 | |
1486 /* PDT parameterized array components and string_lengths must have the | |
1487 'len' parameters substituted for the expressions appearing in the | |
1488 declaration of the entity and memory allocated/deallocated. */ | |
1489 if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1490 && sym->param_list != NULL | |
1491 && !(sym->attr.host_assoc || sym->attr.use_assoc || sym->attr.dummy)) | |
1492 gfc_defer_symbol_init (sym); | |
1493 | |
1494 /* Dummy PDT 'len' parameters should be checked when they are explicit. */ | |
1495 if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
1496 && (gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) | |
1497 && sym->param_list != NULL | |
1498 && sym->attr.dummy) | |
1499 gfc_defer_symbol_init (sym); | |
1500 | |
1501 /* All deferred character length procedures need to retain the backend | |
1502 decl, which is a pointer to the character length in the caller's | |
1503 namespace and to declare a local character length. */ | |
1504 if (!byref && sym->attr.function | |
1505 && sym->ts.type == BT_CHARACTER | |
1506 && sym->ts.deferred | |
1507 && sym->ts.u.cl->passed_length == NULL | |
1508 && sym->ts.u.cl->backend_decl | |
1509 && TREE_CODE (sym->ts.u.cl->backend_decl) == PARM_DECL) | |
1510 { | |
1511 sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1512 gcc_assert (POINTER_TYPE_P (TREE_TYPE (sym->ts.u.cl->passed_length))); | |
1513 sym->ts.u.cl->backend_decl = build_fold_indirect_ref (sym->ts.u.cl->backend_decl); | |
1514 } | |
1515 | |
1516 fun_or_res = byref && (sym->attr.result | |
1517 || (sym->attr.function && sym->ts.deferred)); | |
1518 if ((sym->attr.dummy && ! sym->attr.function) || fun_or_res) | |
1519 { | |
1520 /* Return via extra parameter. */ | |
1521 if (sym->attr.result && byref | |
1522 && !sym->backend_decl) | |
1523 { | |
1524 sym->backend_decl = | |
1525 DECL_ARGUMENTS (sym->ns->proc_name->backend_decl); | |
1526 /* For entry master function skip over the __entry | |
1527 argument. */ | |
1528 if (sym->ns->proc_name->attr.entry_master) | |
1529 sym->backend_decl = DECL_CHAIN (sym->backend_decl); | |
1530 } | |
1531 | |
1532 /* Dummy variables should already have been created. */ | |
1533 gcc_assert (sym->backend_decl); | |
1534 | |
1535 if (sym->attr.pointer && sym->attr.dimension && sym->ts.type != BT_CLASS) | |
1536 GFC_DECL_PTR_ARRAY_P (sym->backend_decl) = 1; | |
1537 | |
1538 /* Create a character length variable. */ | |
1539 if (sym->ts.type == BT_CHARACTER) | |
1540 { | |
1541 /* For a deferred dummy, make a new string length variable. */ | |
1542 if (sym->ts.deferred | |
1543 && | |
1544 (sym->ts.u.cl->passed_length == sym->ts.u.cl->backend_decl)) | |
1545 sym->ts.u.cl->backend_decl = NULL_TREE; | |
1546 | |
1547 if (sym->ts.deferred && byref) | |
1548 { | |
1549 /* The string length of a deferred char array is stored in the | |
1550 parameter at sym->ts.u.cl->backend_decl as a reference and | |
1551 marked as a result. Exempt this variable from generating a | |
1552 temporary for it. */ | |
1553 if (sym->attr.result) | |
1554 { | |
1555 /* We need to insert a indirect ref for param decls. */ | |
1556 if (sym->ts.u.cl->backend_decl | |
1557 && TREE_CODE (sym->ts.u.cl->backend_decl) == PARM_DECL) | |
1558 { | |
1559 sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1560 sym->ts.u.cl->backend_decl = | |
1561 build_fold_indirect_ref (sym->ts.u.cl->backend_decl); | |
1562 } | |
1563 } | |
1564 /* For all other parameters make sure, that they are copied so | |
1565 that the value and any modifications are local to the routine | |
1566 by generating a temporary variable. */ | |
1567 else if (sym->attr.function | |
1568 && sym->ts.u.cl->passed_length == NULL | |
1569 && sym->ts.u.cl->backend_decl) | |
1570 { | |
1571 sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1572 if (POINTER_TYPE_P (TREE_TYPE (sym->ts.u.cl->passed_length))) | |
1573 sym->ts.u.cl->backend_decl | |
1574 = build_fold_indirect_ref (sym->ts.u.cl->backend_decl); | |
1575 else | |
1576 sym->ts.u.cl->backend_decl = NULL_TREE; | |
1577 } | |
1578 } | |
1579 | |
1580 if (sym->ts.u.cl->backend_decl == NULL_TREE) | |
1581 length = gfc_create_string_length (sym); | |
1582 else | |
1583 length = sym->ts.u.cl->backend_decl; | |
1584 if (VAR_P (length) && DECL_FILE_SCOPE_P (length)) | |
1585 { | |
1586 /* Add the string length to the same context as the symbol. */ | |
1587 if (DECL_CONTEXT (sym->backend_decl) == current_function_decl) | |
1588 gfc_add_decl_to_function (length); | |
1589 else | |
1590 gfc_add_decl_to_parent_function (length); | |
1591 | |
1592 gcc_assert (DECL_CONTEXT (sym->backend_decl) == | |
1593 DECL_CONTEXT (length)); | |
1594 | |
1595 gfc_defer_symbol_init (sym); | |
1596 } | |
1597 } | |
1598 | |
1599 /* Use a copy of the descriptor for dummy arrays. */ | |
1600 if ((sym->attr.dimension || sym->attr.codimension) | |
1601 && !TREE_USED (sym->backend_decl)) | |
1602 { | |
1603 decl = gfc_build_dummy_array_decl (sym, sym->backend_decl); | |
1604 /* Prevent the dummy from being detected as unused if it is copied. */ | |
1605 if (sym->backend_decl != NULL && decl != sym->backend_decl) | |
1606 DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
1607 sym->backend_decl = decl; | |
1608 } | |
1609 | |
1610 /* Returning the descriptor for dummy class arrays is hazardous, because | |
1611 some caller is expecting an expression to apply the component refs to. | |
1612 Therefore the descriptor is only created and stored in | |
1613 sym->backend_decl's GFC_DECL_SAVED_DESCRIPTOR. The caller is then | |
1614 responsible to extract it from there, when the descriptor is | |
1615 desired. */ | |
1616 if (IS_CLASS_ARRAY (sym) | |
1617 && (!DECL_LANG_SPECIFIC (sym->backend_decl) | |
1618 || !GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl))) | |
1619 { | |
1620 decl = gfc_build_dummy_array_decl (sym, sym->backend_decl); | |
1621 /* Prevent the dummy from being detected as unused if it is copied. */ | |
1622 if (sym->backend_decl != NULL && decl != sym->backend_decl) | |
1623 DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
1624 sym->backend_decl = decl; | |
1625 } | |
1626 | |
1627 TREE_USED (sym->backend_decl) = 1; | |
1628 if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0) | |
1629 { | |
1630 gfc_add_assign_aux_vars (sym); | |
1631 } | |
1632 | |
1633 if ((sym->attr.dimension || IS_CLASS_ARRAY (sym)) | |
1634 && DECL_LANG_SPECIFIC (sym->backend_decl) | |
1635 && GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl) | |
1636 && DECL_CONTEXT (sym->backend_decl) != current_function_decl) | |
1637 gfc_nonlocal_dummy_array_decl (sym); | |
1638 | |
1639 if (sym->ts.type == BT_CLASS && sym->backend_decl) | |
1640 GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1641 | |
1642 return sym->backend_decl; | |
1643 } | |
1644 | |
1645 if (sym->backend_decl) | |
1646 return sym->backend_decl; | |
1647 | |
1648 /* Special case for array-valued named constants from intrinsic | |
1649 procedures; those are inlined. */ | |
1650 if (sym->attr.use_assoc && sym->attr.flavor == FL_PARAMETER | |
1651 && (sym->from_intmod == INTMOD_ISO_FORTRAN_ENV | |
1652 || sym->from_intmod == INTMOD_ISO_C_BINDING)) | |
1653 intrinsic_array_parameter = true; | |
1654 | |
1655 /* If use associated compilation, use the module | |
1656 declaration. */ | |
1657 if ((sym->attr.flavor == FL_VARIABLE | |
1658 || sym->attr.flavor == FL_PARAMETER) | |
1659 && (sym->attr.use_assoc || sym->attr.used_in_submodule) | |
1660 && !intrinsic_array_parameter | |
1661 && sym->module | |
1662 && gfc_get_module_backend_decl (sym)) | |
1663 { | |
1664 if (sym->ts.type == BT_CLASS && sym->backend_decl) | |
1665 GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1666 return sym->backend_decl; | |
1667 } | |
1668 | |
1669 if (sym->attr.flavor == FL_PROCEDURE) | |
1670 { | |
1671 /* Catch functions. Only used for actual parameters, | |
1672 procedure pointers and procptr initialization targets. */ | |
1673 if (sym->attr.use_assoc | |
1674 || sym->attr.used_in_submodule | |
1675 || sym->attr.intrinsic | |
1676 || sym->attr.if_source != IFSRC_DECL) | |
1677 { | |
1678 decl = gfc_get_extern_function_decl (sym); | |
1679 gfc_set_decl_location (decl, &sym->declared_at); | |
1680 } | |
1681 else | |
1682 { | |
1683 if (!sym->backend_decl) | |
1684 build_function_decl (sym, false); | |
1685 decl = sym->backend_decl; | |
1686 } | |
1687 return decl; | |
1688 } | |
1689 | |
1690 if (sym->attr.intrinsic) | |
1691 gfc_internal_error ("intrinsic variable which isn't a procedure"); | |
1692 | |
1693 /* Create string length decl first so that they can be used in the | |
1694 type declaration. For associate names, the target character | |
1695 length is used. Set 'length' to a constant so that if the | |
1696 string length is a variable, it is not finished a second time. */ | |
1697 if (sym->ts.type == BT_CHARACTER) | |
1698 { | |
1699 if (sym->attr.associate_var | |
1700 && sym->ts.deferred | |
1701 && sym->assoc && sym->assoc->target | |
1702 && ((sym->assoc->target->expr_type == EXPR_VARIABLE | |
1703 && sym->assoc->target->symtree->n.sym->ts.type != BT_CHARACTER) | |
1704 || sym->assoc->target->expr_type == EXPR_FUNCTION)) | |
1705 sym->ts.u.cl->backend_decl = NULL_TREE; | |
1706 | |
1707 if (sym->attr.associate_var | |
1708 && sym->ts.u.cl->backend_decl | |
1709 && VAR_P (sym->ts.u.cl->backend_decl)) | |
1710 length = gfc_index_zero_node; | |
1711 else | |
1712 length = gfc_create_string_length (sym); | |
1713 } | |
1714 | |
1715 /* Create the decl for the variable. */ | |
1716 decl = build_decl (sym->declared_at.lb->location, | |
1717 VAR_DECL, gfc_sym_identifier (sym), gfc_sym_type (sym)); | |
1718 | |
1719 /* Add attributes to variables. Functions are handled elsewhere. */ | |
1720 attributes = add_attributes_to_decl (sym->attr, NULL_TREE); | |
1721 decl_attributes (&decl, attributes, 0); | |
1722 | |
1723 /* Symbols from modules should have their assembler names mangled. | |
1724 This is done here rather than in gfc_finish_var_decl because it | |
1725 is different for string length variables. */ | |
1726 if (sym->module || sym->fn_result_spec) | |
1727 { | |
1728 gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); | |
1729 if (sym->attr.use_assoc && !intrinsic_array_parameter) | |
1730 DECL_IGNORED_P (decl) = 1; | |
1731 } | |
1732 | |
1733 if (sym->attr.select_type_temporary) | |
1734 { | |
1735 DECL_ARTIFICIAL (decl) = 1; | |
1736 DECL_IGNORED_P (decl) = 1; | |
1737 } | |
1738 | |
1739 if (sym->attr.dimension || sym->attr.codimension) | |
1740 { | |
1741 /* Create variables to hold the non-constant bits of array info. */ | |
1742 gfc_build_qualified_array (decl, sym); | |
1743 | |
1744 if (sym->attr.contiguous | |
1745 || ((sym->attr.allocatable || !sym->attr.dummy) && !sym->attr.pointer)) | |
1746 GFC_DECL_PACKED_ARRAY (decl) = 1; | |
1747 } | |
1748 | |
1749 /* Remember this variable for allocation/cleanup. */ | |
1750 if (sym->attr.dimension || sym->attr.allocatable || sym->attr.codimension | |
1751 || (sym->ts.type == BT_CLASS && | |
1752 (CLASS_DATA (sym)->attr.dimension | |
1753 || CLASS_DATA (sym)->attr.allocatable)) | |
1754 || (sym->ts.type == BT_DERIVED | |
1755 && (sym->ts.u.derived->attr.alloc_comp | |
1756 || (!sym->attr.pointer && !sym->attr.artificial && !sym->attr.save | |
1757 && !sym->ns->proc_name->attr.is_main_program | |
1758 && gfc_is_finalizable (sym->ts.u.derived, NULL)))) | |
1759 /* This applies a derived type default initializer. */ | |
1760 || (sym->ts.type == BT_DERIVED | |
1761 && sym->attr.save == SAVE_NONE | |
1762 && !sym->attr.data | |
1763 && !sym->attr.allocatable | |
1764 && (sym->value && !sym->ns->proc_name->attr.is_main_program) | |
1765 && !(sym->attr.use_assoc && !intrinsic_array_parameter))) | |
1766 gfc_defer_symbol_init (sym); | |
1767 | |
1768 /* Associate names can use the hidden string length variable | |
1769 of their associated target. */ | |
1770 if (sym->ts.type == BT_CHARACTER | |
1771 && TREE_CODE (length) != INTEGER_CST) | |
1772 { | |
1773 gfc_finish_var_decl (length, sym); | |
1774 gcc_assert (!sym->value); | |
1775 } | |
1776 | |
1777 gfc_finish_var_decl (decl, sym); | |
1778 | |
1779 if (sym->ts.type == BT_CHARACTER) | |
1780 /* Character variables need special handling. */ | |
1781 gfc_allocate_lang_decl (decl); | |
1782 | |
1783 if (sym->assoc && sym->attr.subref_array_pointer) | |
1784 sym->attr.pointer = 1; | |
1785 | |
1786 if (sym->attr.pointer && sym->attr.dimension | |
1787 && !sym->ts.deferred | |
1788 && !(sym->attr.select_type_temporary | |
1789 && !sym->attr.subref_array_pointer)) | |
1790 GFC_DECL_PTR_ARRAY_P (decl) = 1; | |
1791 | |
1792 if (sym->ts.type == BT_CLASS) | |
1793 GFC_DECL_CLASS(decl) = 1; | |
1794 | |
1795 sym->backend_decl = decl; | |
1796 | |
1797 if (sym->attr.assign) | |
1798 gfc_add_assign_aux_vars (sym); | |
1799 | |
1800 if (intrinsic_array_parameter) | |
1801 { | |
1802 TREE_STATIC (decl) = 1; | |
1803 DECL_EXTERNAL (decl) = 0; | |
1804 } | |
1805 | |
1806 if (TREE_STATIC (decl) | |
1807 && !(sym->attr.use_assoc && !intrinsic_array_parameter) | |
1808 && (sym->attr.save || sym->ns->proc_name->attr.is_main_program | |
1809 || !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) | |
1810 || sym->attr.data || sym->ns->proc_name->attr.flavor == FL_MODULE) | |
1811 && (flag_coarray != GFC_FCOARRAY_LIB | |
1812 || !sym->attr.codimension || sym->attr.allocatable)) | |
1813 { | |
1814 /* Add static initializer. For procedures, it is only needed if | |
1815 SAVE is specified otherwise they need to be reinitialized | |
1816 every time the procedure is entered. The TREE_STATIC is | |
1817 in this case due to -fmax-stack-var-size=. */ | |
1818 | |
1819 DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
1820 TREE_TYPE (decl), sym->attr.dimension | |
1821 || (sym->attr.codimension | |
1822 && sym->attr.allocatable), | |
1823 sym->attr.pointer || sym->attr.allocatable | |
1824 || sym->ts.type == BT_CLASS, | |
1825 sym->attr.proc_pointer); | |
1826 } | |
1827 | |
1828 if (!TREE_STATIC (decl) | |
1829 && POINTER_TYPE_P (TREE_TYPE (decl)) | |
1830 && !sym->attr.pointer | |
1831 && !sym->attr.allocatable | |
1832 && !sym->attr.proc_pointer | |
1833 && !sym->attr.select_type_temporary) | |
1834 DECL_BY_REFERENCE (decl) = 1; | |
1835 | |
1836 if (sym->attr.associate_var) | |
1837 GFC_DECL_ASSOCIATE_VAR_P (decl) = 1; | |
1838 | |
1839 if (sym->attr.vtab | |
1840 || (sym->name[0] == '_' && strncmp ("__def_init", sym->name, 10) == 0)) | |
1841 TREE_READONLY (decl) = 1; | |
1842 | |
1843 return decl; | |
1844 } | |
1845 | |
1846 | |
1847 /* Substitute a temporary variable in place of the real one. */ | |
1848 | |
1849 void | |
1850 gfc_shadow_sym (gfc_symbol * sym, tree decl, gfc_saved_var * save) | |
1851 { | |
1852 save->attr = sym->attr; | |
1853 save->decl = sym->backend_decl; | |
1854 | |
1855 gfc_clear_attr (&sym->attr); | |
1856 sym->attr.referenced = 1; | |
1857 sym->attr.flavor = FL_VARIABLE; | |
1858 | |
1859 sym->backend_decl = decl; | |
1860 } | |
1861 | |
1862 | |
1863 /* Restore the original variable. */ | |
1864 | |
1865 void | |
1866 gfc_restore_sym (gfc_symbol * sym, gfc_saved_var * save) | |
1867 { | |
1868 sym->attr = save->attr; | |
1869 sym->backend_decl = save->decl; | |
1870 } | |
1871 | |
1872 | |
1873 /* Declare a procedure pointer. */ | |
1874 | |
1875 static tree | |
1876 get_proc_pointer_decl (gfc_symbol *sym) | |
1877 { | |
1878 tree decl; | |
1879 tree attributes; | |
1880 | |
1881 decl = sym->backend_decl; | |
1882 if (decl) | |
1883 return decl; | |
1884 | |
1885 decl = build_decl (input_location, | |
1886 VAR_DECL, get_identifier (sym->name), | |
1887 build_pointer_type (gfc_get_function_type (sym))); | |
1888 | |
1889 if (sym->module) | |
1890 { | |
1891 /* Apply name mangling. */ | |
1892 gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); | |
1893 if (sym->attr.use_assoc) | |
1894 DECL_IGNORED_P (decl) = 1; | |
1895 } | |
1896 | |
1897 if ((sym->ns->proc_name | |
1898 && sym->ns->proc_name->backend_decl == current_function_decl) | |
1899 || sym->attr.contained) | |
1900 gfc_add_decl_to_function (decl); | |
1901 else if (sym->ns->proc_name->attr.flavor != FL_MODULE) | |
1902 gfc_add_decl_to_parent_function (decl); | |
1903 | |
1904 sym->backend_decl = decl; | |
1905 | |
1906 /* If a variable is USE associated, it's always external. */ | |
1907 if (sym->attr.use_assoc) | |
1908 { | |
1909 DECL_EXTERNAL (decl) = 1; | |
1910 TREE_PUBLIC (decl) = 1; | |
1911 } | |
1912 else if (sym->module && sym->ns->proc_name->attr.flavor == FL_MODULE) | |
1913 { | |
1914 /* This is the declaration of a module variable. */ | |
1915 TREE_PUBLIC (decl) = 1; | |
1916 if (sym->attr.access == ACCESS_PRIVATE && !sym->attr.public_used) | |
1917 { | |
1918 DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN; | |
1919 DECL_VISIBILITY_SPECIFIED (decl) = true; | |
1920 } | |
1921 TREE_STATIC (decl) = 1; | |
1922 } | |
1923 | |
1924 if (!sym->attr.use_assoc | |
1925 && (sym->attr.save != SAVE_NONE || sym->attr.data | |
1926 || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
1927 TREE_STATIC (decl) = 1; | |
1928 | |
1929 if (TREE_STATIC (decl) && sym->value) | |
1930 { | |
1931 /* Add static initializer. */ | |
1932 DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
1933 TREE_TYPE (decl), | |
1934 sym->attr.dimension, | |
1935 false, true); | |
1936 } | |
1937 | |
1938 /* Handle threadprivate procedure pointers. */ | |
1939 if (sym->attr.threadprivate | |
1940 && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) | |
1941 set_decl_tls_model (decl, decl_default_tls_model (decl)); | |
1942 | |
1943 attributes = add_attributes_to_decl (sym->attr, NULL_TREE); | |
1944 decl_attributes (&decl, attributes, 0); | |
1945 | |
1946 return decl; | |
1947 } | |
1948 | |
1949 | |
1950 /* Get a basic decl for an external function. */ | |
1951 | |
1952 tree | |
1953 gfc_get_extern_function_decl (gfc_symbol * sym) | |
1954 { | |
1955 tree type; | |
1956 tree fndecl; | |
1957 tree attributes; | |
1958 gfc_expr e; | |
1959 gfc_intrinsic_sym *isym; | |
1960 gfc_expr argexpr; | |
1961 char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */ | |
1962 tree name; | |
1963 tree mangled_name; | |
1964 gfc_gsymbol *gsym; | |
1965 | |
1966 if (sym->backend_decl) | |
1967 return sym->backend_decl; | |
1968 | |
1969 /* We should never be creating external decls for alternate entry points. | |
1970 The procedure may be an alternate entry point, but we don't want/need | |
1971 to know that. */ | |
1972 gcc_assert (!(sym->attr.entry || sym->attr.entry_master)); | |
1973 | |
1974 if (sym->attr.proc_pointer) | |
1975 return get_proc_pointer_decl (sym); | |
1976 | |
1977 /* See if this is an external procedure from the same file. If so, | |
1978 return the backend_decl. */ | |
1979 gsym = gfc_find_gsymbol (gfc_gsym_root, sym->binding_label | |
1980 ? sym->binding_label : sym->name); | |
1981 | |
1982 if (gsym && !gsym->defined) | |
1983 gsym = NULL; | |
1984 | |
1985 /* This can happen because of C binding. */ | |
1986 if (gsym && gsym->ns && gsym->ns->proc_name | |
1987 && gsym->ns->proc_name->attr.flavor == FL_MODULE) | |
1988 goto module_sym; | |
1989 | |
1990 if ((!sym->attr.use_assoc || sym->attr.if_source != IFSRC_DECL) | |
1991 && !sym->backend_decl | |
1992 && gsym && gsym->ns | |
1993 && ((gsym->type == GSYM_SUBROUTINE) || (gsym->type == GSYM_FUNCTION)) | |
1994 && (gsym->ns->proc_name->backend_decl || !sym->attr.intrinsic)) | |
1995 { | |
1996 if (!gsym->ns->proc_name->backend_decl) | |
1997 { | |
1998 /* By construction, the external function cannot be | |
1999 a contained procedure. */ | |
2000 locus old_loc; | |
2001 | |
2002 gfc_save_backend_locus (&old_loc); | |
2003 push_cfun (NULL); | |
2004 | |
2005 gfc_create_function_decl (gsym->ns, true); | |
2006 | |
2007 pop_cfun (); | |
2008 gfc_restore_backend_locus (&old_loc); | |
2009 } | |
2010 | |
2011 /* If the namespace has entries, the proc_name is the | |
2012 entry master. Find the entry and use its backend_decl. | |
2013 otherwise, use the proc_name backend_decl. */ | |
2014 if (gsym->ns->entries) | |
2015 { | |
2016 gfc_entry_list *entry = gsym->ns->entries; | |
2017 | |
2018 for (; entry; entry = entry->next) | |
2019 { | |
2020 if (strcmp (gsym->name, entry->sym->name) == 0) | |
2021 { | |
2022 sym->backend_decl = entry->sym->backend_decl; | |
2023 break; | |
2024 } | |
2025 } | |
2026 } | |
2027 else | |
2028 sym->backend_decl = gsym->ns->proc_name->backend_decl; | |
2029 | |
2030 if (sym->backend_decl) | |
2031 { | |
2032 /* Avoid problems of double deallocation of the backend declaration | |
2033 later in gfc_trans_use_stmts; cf. PR 45087. */ | |
2034 if (sym->attr.if_source != IFSRC_DECL && sym->attr.use_assoc) | |
2035 sym->attr.use_assoc = 0; | |
2036 | |
2037 return sym->backend_decl; | |
2038 } | |
2039 } | |
2040 | |
2041 /* See if this is a module procedure from the same file. If so, | |
2042 return the backend_decl. */ | |
2043 if (sym->module) | |
2044 gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
2045 | |
2046 module_sym: | |
2047 if (gsym && gsym->ns | |
2048 && (gsym->type == GSYM_MODULE | |
2049 || (gsym->ns->proc_name && gsym->ns->proc_name->attr.flavor == FL_MODULE))) | |
2050 { | |
2051 gfc_symbol *s; | |
2052 | |
2053 s = NULL; | |
2054 if (gsym->type == GSYM_MODULE) | |
2055 gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
2056 else | |
2057 gfc_find_symbol (gsym->sym_name, gsym->ns, 0, &s); | |
2058 | |
2059 if (s && s->backend_decl) | |
2060 { | |
2061 if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) | |
2062 gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, | |
2063 true); | |
2064 else if (sym->ts.type == BT_CHARACTER) | |
2065 sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
2066 sym->backend_decl = s->backend_decl; | |
2067 return sym->backend_decl; | |
2068 } | |
2069 } | |
2070 | |
2071 if (sym->attr.intrinsic) | |
2072 { | |
2073 /* Call the resolution function to get the actual name. This is | |
2074 a nasty hack which relies on the resolution functions only looking | |
2075 at the first argument. We pass NULL for the second argument | |
2076 otherwise things like AINT get confused. */ | |
2077 isym = gfc_find_function (sym->name); | |
2078 gcc_assert (isym->resolve.f0 != NULL); | |
2079 | |
2080 memset (&e, 0, sizeof (e)); | |
2081 e.expr_type = EXPR_FUNCTION; | |
2082 | |
2083 memset (&argexpr, 0, sizeof (argexpr)); | |
2084 gcc_assert (isym->formal); | |
2085 argexpr.ts = isym->formal->ts; | |
2086 | |
2087 if (isym->formal->next == NULL) | |
2088 isym->resolve.f1 (&e, &argexpr); | |
2089 else | |
2090 { | |
2091 if (isym->formal->next->next == NULL) | |
2092 isym->resolve.f2 (&e, &argexpr, NULL); | |
2093 else | |
2094 { | |
2095 if (isym->formal->next->next->next == NULL) | |
2096 isym->resolve.f3 (&e, &argexpr, NULL, NULL); | |
2097 else | |
2098 { | |
2099 /* All specific intrinsics take less than 5 arguments. */ | |
2100 gcc_assert (isym->formal->next->next->next->next == NULL); | |
2101 isym->resolve.f4 (&e, &argexpr, NULL, NULL, NULL); | |
2102 } | |
2103 } | |
2104 } | |
2105 | |
2106 if (flag_f2c | |
2107 && ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind) | |
2108 || e.ts.type == BT_COMPLEX)) | |
2109 { | |
2110 /* Specific which needs a different implementation if f2c | |
2111 calling conventions are used. */ | |
2112 sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name); | |
2113 } | |
2114 else | |
2115 sprintf (s, "_gfortran_specific%s", e.value.function.name); | |
2116 | |
2117 name = get_identifier (s); | |
2118 mangled_name = name; | |
2119 } | |
2120 else | |
2121 { | |
2122 name = gfc_sym_identifier (sym); | |
2123 mangled_name = gfc_sym_mangled_function_id (sym); | |
2124 } | |
2125 | |
2126 type = gfc_get_function_type (sym); | |
2127 fndecl = build_decl (input_location, | |
2128 FUNCTION_DECL, name, type); | |
2129 | |
2130 /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; | |
2131 TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
2132 the opposite of declaring a function as static in C). */ | |
2133 DECL_EXTERNAL (fndecl) = 1; | |
2134 TREE_PUBLIC (fndecl) = 1; | |
2135 | |
2136 attributes = add_attributes_to_decl (sym->attr, NULL_TREE); | |
2137 decl_attributes (&fndecl, attributes, 0); | |
2138 | |
2139 gfc_set_decl_assembler_name (fndecl, mangled_name); | |
2140 | |
2141 /* Set the context of this decl. */ | |
2142 if (0 && sym->ns && sym->ns->proc_name) | |
2143 { | |
2144 /* TODO: Add external decls to the appropriate scope. */ | |
2145 DECL_CONTEXT (fndecl) = sym->ns->proc_name->backend_decl; | |
2146 } | |
2147 else | |
2148 { | |
2149 /* Global declaration, e.g. intrinsic subroutine. */ | |
2150 DECL_CONTEXT (fndecl) = NULL_TREE; | |
2151 } | |
2152 | |
2153 /* Set attributes for PURE functions. A call to PURE function in the | |
2154 Fortran 95 sense is both pure and without side effects in the C | |
2155 sense. */ | |
2156 if (sym->attr.pure || sym->attr.implicit_pure) | |
2157 { | |
2158 if (sym->attr.function && !gfc_return_by_reference (sym)) | |
2159 DECL_PURE_P (fndecl) = 1; | |
2160 /* TODO: check if pure SUBROUTINEs don't have INTENT(OUT) | |
2161 parameters and don't use alternate returns (is this | |
2162 allowed?). In that case, calls to them are meaningless, and | |
2163 can be optimized away. See also in build_function_decl(). */ | |
2164 TREE_SIDE_EFFECTS (fndecl) = 0; | |
2165 } | |
2166 | |
2167 /* Mark non-returning functions. */ | |
2168 if (sym->attr.noreturn) | |
2169 TREE_THIS_VOLATILE(fndecl) = 1; | |
2170 | |
2171 sym->backend_decl = fndecl; | |
2172 | |
2173 if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
2174 pushdecl_top_level (fndecl); | |
2175 | |
2176 if (sym->formal_ns | |
2177 && sym->formal_ns->proc_name == sym | |
2178 && sym->formal_ns->omp_declare_simd) | |
2179 gfc_trans_omp_declare_simd (sym->formal_ns); | |
2180 | |
2181 return fndecl; | |
2182 } | |
2183 | |
2184 | |
2185 /* Create a declaration for a procedure. For external functions (in the C | |
2186 sense) use gfc_get_extern_function_decl. HAS_ENTRIES is true if this is | |
2187 a master function with alternate entry points. */ | |
2188 | |
2189 static void | |
2190 build_function_decl (gfc_symbol * sym, bool global) | |
2191 { | |
2192 tree fndecl, type, attributes; | |
2193 symbol_attribute attr; | |
2194 tree result_decl; | |
2195 gfc_formal_arglist *f; | |
2196 | |
2197 bool module_procedure = sym->attr.module_procedure | |
2198 && sym->ns | |
2199 && sym->ns->proc_name | |
2200 && sym->ns->proc_name->attr.flavor == FL_MODULE; | |
2201 | |
2202 gcc_assert (!sym->attr.external || module_procedure); | |
2203 | |
2204 if (sym->backend_decl) | |
2205 return; | |
2206 | |
2207 /* Set the line and filename. sym->declared_at seems to point to the | |
2208 last statement for subroutines, but it'll do for now. */ | |
2209 gfc_set_backend_locus (&sym->declared_at); | |
2210 | |
2211 /* Allow only one nesting level. Allow public declarations. */ | |
2212 gcc_assert (current_function_decl == NULL_TREE | |
2213 || DECL_FILE_SCOPE_P (current_function_decl) | |
2214 || (TREE_CODE (DECL_CONTEXT (current_function_decl)) | |
2215 == NAMESPACE_DECL)); | |
2216 | |
2217 type = gfc_get_function_type (sym); | |
2218 fndecl = build_decl (input_location, | |
2219 FUNCTION_DECL, gfc_sym_identifier (sym), type); | |
2220 | |
2221 attr = sym->attr; | |
2222 | |
2223 /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; | |
2224 TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
2225 the opposite of declaring a function as static in C). */ | |
2226 DECL_EXTERNAL (fndecl) = 0; | |
2227 | |
2228 if (sym->attr.access == ACCESS_UNKNOWN && sym->module | |
2229 && (sym->ns->default_access == ACCESS_PRIVATE | |
2230 || (sym->ns->default_access == ACCESS_UNKNOWN | |
2231 && flag_module_private))) | |
2232 sym->attr.access = ACCESS_PRIVATE; | |
2233 | |
2234 if (!current_function_decl | |
2235 && !sym->attr.entry_master && !sym->attr.is_main_program | |
2236 && (sym->attr.access != ACCESS_PRIVATE || sym->binding_label | |
2237 || sym->attr.public_used)) | |
2238 TREE_PUBLIC (fndecl) = 1; | |
2239 | |
2240 if (sym->attr.referenced || sym->attr.entry_master) | |
2241 TREE_USED (fndecl) = 1; | |
2242 | |
2243 attributes = add_attributes_to_decl (attr, NULL_TREE); | |
2244 decl_attributes (&fndecl, attributes, 0); | |
2245 | |
2246 /* Figure out the return type of the declared function, and build a | |
2247 RESULT_DECL for it. If this is a subroutine with alternate | |
2248 returns, build a RESULT_DECL for it. */ | |
2249 result_decl = NULL_TREE; | |
2250 /* TODO: Shouldn't this just be TREE_TYPE (TREE_TYPE (fndecl)). */ | |
2251 if (attr.function) | |
2252 { | |
2253 if (gfc_return_by_reference (sym)) | |
2254 type = void_type_node; | |
2255 else | |
2256 { | |
2257 if (sym->result != sym) | |
2258 result_decl = gfc_sym_identifier (sym->result); | |
2259 | |
2260 type = TREE_TYPE (TREE_TYPE (fndecl)); | |
2261 } | |
2262 } | |
2263 else | |
2264 { | |
2265 /* Look for alternate return placeholders. */ | |
2266 int has_alternate_returns = 0; | |
2267 for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) | |
2268 { | |
2269 if (f->sym == NULL) | |
2270 { | |
2271 has_alternate_returns = 1; | |
2272 break; | |
2273 } | |
2274 } | |
2275 | |
2276 if (has_alternate_returns) | |
2277 type = integer_type_node; | |
2278 else | |
2279 type = void_type_node; | |
2280 } | |
2281 | |
2282 result_decl = build_decl (input_location, | |
2283 RESULT_DECL, result_decl, type); | |
2284 DECL_ARTIFICIAL (result_decl) = 1; | |
2285 DECL_IGNORED_P (result_decl) = 1; | |
2286 DECL_CONTEXT (result_decl) = fndecl; | |
2287 DECL_RESULT (fndecl) = result_decl; | |
2288 | |
2289 /* Don't call layout_decl for a RESULT_DECL. | |
2290 layout_decl (result_decl, 0); */ | |
2291 | |
2292 /* TREE_STATIC means the function body is defined here. */ | |
2293 TREE_STATIC (fndecl) = 1; | |
2294 | |
2295 /* Set attributes for PURE functions. A call to a PURE function in the | |
2296 Fortran 95 sense is both pure and without side effects in the C | |
2297 sense. */ | |
2298 if (attr.pure || attr.implicit_pure) | |
2299 { | |
2300 /* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments | |
2301 including an alternate return. In that case it can also be | |
2302 marked as PURE. See also in gfc_get_extern_function_decl(). */ | |
2303 if (attr.function && !gfc_return_by_reference (sym)) | |
2304 DECL_PURE_P (fndecl) = 1; | |
2305 TREE_SIDE_EFFECTS (fndecl) = 0; | |
2306 } | |
2307 | |
2308 | |
2309 /* Layout the function declaration and put it in the binding level | |
2310 of the current function. */ | |
2311 | |
2312 if (global) | |
2313 pushdecl_top_level (fndecl); | |
2314 else | |
2315 pushdecl (fndecl); | |
2316 | |
2317 /* Perform name mangling if this is a top level or module procedure. */ | |
2318 if (current_function_decl == NULL_TREE) | |
2319 gfc_set_decl_assembler_name (fndecl, gfc_sym_mangled_function_id (sym)); | |
2320 | |
2321 sym->backend_decl = fndecl; | |
2322 } | |
2323 | |
2324 | |
2325 /* Create the DECL_ARGUMENTS for a procedure. */ | |
2326 | |
2327 static void | |
2328 create_function_arglist (gfc_symbol * sym) | |
2329 { | |
2330 tree fndecl; | |
2331 gfc_formal_arglist *f; | |
2332 tree typelist, hidden_typelist; | |
2333 tree arglist, hidden_arglist; | |
2334 tree type; | |
2335 tree parm; | |
2336 | |
2337 fndecl = sym->backend_decl; | |
2338 | |
2339 /* Build formal argument list. Make sure that their TREE_CONTEXT is | |
2340 the new FUNCTION_DECL node. */ | |
2341 arglist = NULL_TREE; | |
2342 hidden_arglist = NULL_TREE; | |
2343 typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); | |
2344 | |
2345 if (sym->attr.entry_master) | |
2346 { | |
2347 type = TREE_VALUE (typelist); | |
2348 parm = build_decl (input_location, | |
2349 PARM_DECL, get_identifier ("__entry"), type); | |
2350 | |
2351 DECL_CONTEXT (parm) = fndecl; | |
2352 DECL_ARG_TYPE (parm) = type; | |
2353 TREE_READONLY (parm) = 1; | |
2354 gfc_finish_decl (parm); | |
2355 DECL_ARTIFICIAL (parm) = 1; | |
2356 | |
2357 arglist = chainon (arglist, parm); | |
2358 typelist = TREE_CHAIN (typelist); | |
2359 } | |
2360 | |
2361 if (gfc_return_by_reference (sym)) | |
2362 { | |
2363 tree type = TREE_VALUE (typelist), length = NULL; | |
2364 | |
2365 if (sym->ts.type == BT_CHARACTER) | |
2366 { | |
2367 /* Length of character result. */ | |
2368 tree len_type = TREE_VALUE (TREE_CHAIN (typelist)); | |
2369 | |
2370 length = build_decl (input_location, | |
2371 PARM_DECL, | |
2372 get_identifier (".__result"), | |
2373 len_type); | |
2374 if (POINTER_TYPE_P (len_type)) | |
2375 { | |
2376 sym->ts.u.cl->passed_length = length; | |
2377 TREE_USED (length) = 1; | |
2378 } | |
2379 else if (!sym->ts.u.cl->length) | |
2380 { | |
2381 sym->ts.u.cl->backend_decl = length; | |
2382 TREE_USED (length) = 1; | |
2383 } | |
2384 gcc_assert (TREE_CODE (length) == PARM_DECL); | |
2385 DECL_CONTEXT (length) = fndecl; | |
2386 DECL_ARG_TYPE (length) = len_type; | |
2387 TREE_READONLY (length) = 1; | |
2388 DECL_ARTIFICIAL (length) = 1; | |
2389 gfc_finish_decl (length); | |
2390 if (sym->ts.u.cl->backend_decl == NULL | |
2391 || sym->ts.u.cl->backend_decl == length) | |
2392 { | |
2393 gfc_symbol *arg; | |
2394 tree backend_decl; | |
2395 | |
2396 if (sym->ts.u.cl->backend_decl == NULL) | |
2397 { | |
2398 tree len = build_decl (input_location, | |
2399 VAR_DECL, | |
2400 get_identifier ("..__result"), | |
2401 gfc_charlen_type_node); | |
2402 DECL_ARTIFICIAL (len) = 1; | |
2403 TREE_USED (len) = 1; | |
2404 sym->ts.u.cl->backend_decl = len; | |
2405 } | |
2406 | |
2407 /* Make sure PARM_DECL type doesn't point to incomplete type. */ | |
2408 arg = sym->result ? sym->result : sym; | |
2409 backend_decl = arg->backend_decl; | |
2410 /* Temporary clear it, so that gfc_sym_type creates complete | |
2411 type. */ | |
2412 arg->backend_decl = NULL; | |
2413 type = gfc_sym_type (arg); | |
2414 arg->backend_decl = backend_decl; | |
2415 type = build_reference_type (type); | |
2416 } | |
2417 } | |
2418 | |
2419 parm = build_decl (input_location, | |
2420 PARM_DECL, get_identifier ("__result"), type); | |
2421 | |
2422 DECL_CONTEXT (parm) = fndecl; | |
2423 DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2424 TREE_READONLY (parm) = 1; | |
2425 DECL_ARTIFICIAL (parm) = 1; | |
2426 gfc_finish_decl (parm); | |
2427 | |
2428 arglist = chainon (arglist, parm); | |
2429 typelist = TREE_CHAIN (typelist); | |
2430 | |
2431 if (sym->ts.type == BT_CHARACTER) | |
2432 { | |
2433 gfc_allocate_lang_decl (parm); | |
2434 arglist = chainon (arglist, length); | |
2435 typelist = TREE_CHAIN (typelist); | |
2436 } | |
2437 } | |
2438 | |
2439 hidden_typelist = typelist; | |
2440 for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) | |
2441 if (f->sym != NULL) /* Ignore alternate returns. */ | |
2442 hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2443 | |
2444 for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) | |
2445 { | |
2446 char name[GFC_MAX_SYMBOL_LEN + 2]; | |
2447 | |
2448 /* Ignore alternate returns. */ | |
2449 if (f->sym == NULL) | |
2450 continue; | |
2451 | |
2452 type = TREE_VALUE (typelist); | |
2453 | |
2454 if (f->sym->ts.type == BT_CHARACTER | |
2455 && (!sym->attr.is_bind_c || sym->attr.entry_master)) | |
2456 { | |
2457 tree len_type = TREE_VALUE (hidden_typelist); | |
2458 tree length = NULL_TREE; | |
2459 if (!f->sym->ts.deferred) | |
2460 gcc_assert (len_type == gfc_charlen_type_node); | |
2461 else | |
2462 gcc_assert (POINTER_TYPE_P (len_type)); | |
2463 | |
2464 strcpy (&name[1], f->sym->name); | |
2465 name[0] = '_'; | |
2466 length = build_decl (input_location, | |
2467 PARM_DECL, get_identifier (name), len_type); | |
2468 | |
2469 hidden_arglist = chainon (hidden_arglist, length); | |
2470 DECL_CONTEXT (length) = fndecl; | |
2471 DECL_ARTIFICIAL (length) = 1; | |
2472 DECL_ARG_TYPE (length) = len_type; | |
2473 TREE_READONLY (length) = 1; | |
2474 gfc_finish_decl (length); | |
2475 | |
2476 /* Remember the passed value. */ | |
2477 if (!f->sym->ts.u.cl || f->sym->ts.u.cl->passed_length) | |
2478 { | |
2479 /* This can happen if the same type is used for multiple | |
2480 arguments. We need to copy cl as otherwise | |
2481 cl->passed_length gets overwritten. */ | |
2482 f->sym->ts.u.cl = gfc_new_charlen (f->sym->ns, f->sym->ts.u.cl); | |
2483 } | |
2484 f->sym->ts.u.cl->passed_length = length; | |
2485 | |
2486 /* Use the passed value for assumed length variables. */ | |
2487 if (!f->sym->ts.u.cl->length) | |
2488 { | |
2489 TREE_USED (length) = 1; | |
2490 gcc_assert (!f->sym->ts.u.cl->backend_decl); | |
2491 f->sym->ts.u.cl->backend_decl = length; | |
2492 } | |
2493 | |
2494 hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2495 | |
2496 if (f->sym->ts.u.cl->backend_decl == NULL | |
2497 || f->sym->ts.u.cl->backend_decl == length) | |
2498 { | |
2499 if (POINTER_TYPE_P (len_type)) | |
2500 f->sym->ts.u.cl->backend_decl = | |
2501 build_fold_indirect_ref_loc (input_location, length); | |
2502 else if (f->sym->ts.u.cl->backend_decl == NULL) | |
2503 gfc_create_string_length (f->sym); | |
2504 | |
2505 /* Make sure PARM_DECL type doesn't point to incomplete type. */ | |
2506 if (f->sym->attr.flavor == FL_PROCEDURE) | |
2507 type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2508 else | |
2509 type = gfc_sym_type (f->sym); | |
2510 } | |
2511 } | |
2512 /* For noncharacter scalar intrinsic types, VALUE passes the value, | |
2513 hence, the optional status cannot be transferred via a NULL pointer. | |
2514 Thus, we will use a hidden argument in that case. */ | |
2515 else if (f->sym->attr.optional && f->sym->attr.value | |
2516 && !f->sym->attr.dimension && f->sym->ts.type != BT_CLASS | |
2517 && !gfc_bt_struct (f->sym->ts.type)) | |
2518 { | |
2519 tree tmp; | |
2520 strcpy (&name[1], f->sym->name); | |
2521 name[0] = '_'; | |
2522 tmp = build_decl (input_location, | |
2523 PARM_DECL, get_identifier (name), | |
2524 boolean_type_node); | |
2525 | |
2526 hidden_arglist = chainon (hidden_arglist, tmp); | |
2527 DECL_CONTEXT (tmp) = fndecl; | |
2528 DECL_ARTIFICIAL (tmp) = 1; | |
2529 DECL_ARG_TYPE (tmp) = boolean_type_node; | |
2530 TREE_READONLY (tmp) = 1; | |
2531 gfc_finish_decl (tmp); | |
2532 } | |
2533 | |
2534 /* For non-constant length array arguments, make sure they use | |
2535 a different type node from TYPE_ARG_TYPES type. */ | |
2536 if (f->sym->attr.dimension | |
2537 && type == TREE_VALUE (typelist) | |
2538 && TREE_CODE (type) == POINTER_TYPE | |
2539 && GFC_ARRAY_TYPE_P (type) | |
2540 && f->sym->as->type != AS_ASSUMED_SIZE | |
2541 && ! COMPLETE_TYPE_P (TREE_TYPE (type))) | |
2542 { | |
2543 if (f->sym->attr.flavor == FL_PROCEDURE) | |
2544 type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2545 else | |
2546 type = gfc_sym_type (f->sym); | |
2547 } | |
2548 | |
2549 if (f->sym->attr.proc_pointer) | |
2550 type = build_pointer_type (type); | |
2551 | |
2552 if (f->sym->attr.volatile_) | |
2553 type = build_qualified_type (type, TYPE_QUAL_VOLATILE); | |
2554 | |
2555 /* Build the argument declaration. */ | |
2556 parm = build_decl (input_location, | |
2557 PARM_DECL, gfc_sym_identifier (f->sym), type); | |
2558 | |
2559 if (f->sym->attr.volatile_) | |
2560 { | |
2561 TREE_THIS_VOLATILE (parm) = 1; | |
2562 TREE_SIDE_EFFECTS (parm) = 1; | |
2563 } | |
2564 | |
2565 /* Fill in arg stuff. */ | |
2566 DECL_CONTEXT (parm) = fndecl; | |
2567 DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2568 /* All implementation args except for VALUE are read-only. */ | |
2569 if (!f->sym->attr.value) | |
2570 TREE_READONLY (parm) = 1; | |
2571 if (POINTER_TYPE_P (type) | |
2572 && (!f->sym->attr.proc_pointer | |
2573 && f->sym->attr.flavor != FL_PROCEDURE)) | |
2574 DECL_BY_REFERENCE (parm) = 1; | |
2575 | |
2576 gfc_finish_decl (parm); | |
2577 gfc_finish_decl_attrs (parm, &f->sym->attr); | |
2578 | |
2579 f->sym->backend_decl = parm; | |
2580 | |
2581 /* Coarrays which are descriptorless or assumed-shape pass with | |
2582 -fcoarray=lib the token and the offset as hidden arguments. */ | |
2583 if (flag_coarray == GFC_FCOARRAY_LIB | |
2584 && ((f->sym->ts.type != BT_CLASS && f->sym->attr.codimension | |
2585 && !f->sym->attr.allocatable) | |
2586 || (f->sym->ts.type == BT_CLASS | |
2587 && CLASS_DATA (f->sym)->attr.codimension | |
2588 && !CLASS_DATA (f->sym)->attr.allocatable))) | |
2589 { | |
2590 tree caf_type; | |
2591 tree token; | |
2592 tree offset; | |
2593 | |
2594 gcc_assert (f->sym->backend_decl != NULL_TREE | |
2595 && !sym->attr.is_bind_c); | |
2596 caf_type = f->sym->ts.type == BT_CLASS | |
2597 ? TREE_TYPE (CLASS_DATA (f->sym)->backend_decl) | |
2598 : TREE_TYPE (f->sym->backend_decl); | |
2599 | |
2600 token = build_decl (input_location, PARM_DECL, | |
2601 create_tmp_var_name ("caf_token"), | |
2602 build_qualified_type (pvoid_type_node, | |
2603 TYPE_QUAL_RESTRICT)); | |
2604 if ((f->sym->ts.type != BT_CLASS | |
2605 && f->sym->as->type != AS_DEFERRED) | |
2606 || (f->sym->ts.type == BT_CLASS | |
2607 && CLASS_DATA (f->sym)->as->type != AS_DEFERRED)) | |
2608 { | |
2609 gcc_assert (DECL_LANG_SPECIFIC (f->sym->backend_decl) == NULL | |
2610 || GFC_DECL_TOKEN (f->sym->backend_decl) == NULL_TREE); | |
2611 if (DECL_LANG_SPECIFIC (f->sym->backend_decl) == NULL) | |
2612 gfc_allocate_lang_decl (f->sym->backend_decl); | |
2613 GFC_DECL_TOKEN (f->sym->backend_decl) = token; | |
2614 } | |
2615 else | |
2616 { | |
2617 gcc_assert (GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) == NULL_TREE); | |
2618 GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) = token; | |
2619 } | |
2620 | |
2621 DECL_CONTEXT (token) = fndecl; | |
2622 DECL_ARTIFICIAL (token) = 1; | |
2623 DECL_ARG_TYPE (token) = TREE_VALUE (typelist); | |
2624 TREE_READONLY (token) = 1; | |
2625 hidden_arglist = chainon (hidden_arglist, token); | |
2626 gfc_finish_decl (token); | |
2627 | |
2628 offset = build_decl (input_location, PARM_DECL, | |
2629 create_tmp_var_name ("caf_offset"), | |
2630 gfc_array_index_type); | |
2631 | |
2632 if ((f->sym->ts.type != BT_CLASS | |
2633 && f->sym->as->type != AS_DEFERRED) | |
2634 || (f->sym->ts.type == BT_CLASS | |
2635 && CLASS_DATA (f->sym)->as->type != AS_DEFERRED)) | |
2636 { | |
2637 gcc_assert (GFC_DECL_CAF_OFFSET (f->sym->backend_decl) | |
2638 == NULL_TREE); | |
2639 GFC_DECL_CAF_OFFSET (f->sym->backend_decl) = offset; | |
2640 } | |
2641 else | |
2642 { | |
2643 gcc_assert (GFC_TYPE_ARRAY_CAF_OFFSET (caf_type) == NULL_TREE); | |
2644 GFC_TYPE_ARRAY_CAF_OFFSET (caf_type) = offset; | |
2645 } | |
2646 DECL_CONTEXT (offset) = fndecl; | |
2647 DECL_ARTIFICIAL (offset) = 1; | |
2648 DECL_ARG_TYPE (offset) = TREE_VALUE (typelist); | |
2649 TREE_READONLY (offset) = 1; | |
2650 hidden_arglist = chainon (hidden_arglist, offset); | |
2651 gfc_finish_decl (offset); | |
2652 } | |
2653 | |
2654 arglist = chainon (arglist, parm); | |
2655 typelist = TREE_CHAIN (typelist); | |
2656 } | |
2657 | |
2658 /* Add the hidden string length parameters, unless the procedure | |
2659 is bind(C). */ | |
2660 if (!sym->attr.is_bind_c) | |
2661 arglist = chainon (arglist, hidden_arglist); | |
2662 | |
2663 gcc_assert (hidden_typelist == NULL_TREE | |
2664 || TREE_VALUE (hidden_typelist) == void_type_node); | |
2665 DECL_ARGUMENTS (fndecl) = arglist; | |
2666 } | |
2667 | |
2668 /* Do the setup necessary before generating the body of a function. */ | |
2669 | |
2670 static void | |
2671 trans_function_start (gfc_symbol * sym) | |
2672 { | |
2673 tree fndecl; | |
2674 | |
2675 fndecl = sym->backend_decl; | |
2676 | |
2677 /* Let GCC know the current scope is this function. */ | |
2678 current_function_decl = fndecl; | |
2679 | |
2680 /* Let the world know what we're about to do. */ | |
2681 announce_function (fndecl); | |
2682 | |
2683 if (DECL_FILE_SCOPE_P (fndecl)) | |
2684 { | |
2685 /* Create RTL for function declaration. */ | |
2686 rest_of_decl_compilation (fndecl, 1, 0); | |
2687 } | |
2688 | |
2689 /* Create RTL for function definition. */ | |
2690 make_decl_rtl (fndecl); | |
2691 | |
2692 allocate_struct_function (fndecl, false); | |
2693 | |
2694 /* function.c requires a push at the start of the function. */ | |
2695 pushlevel (); | |
2696 } | |
2697 | |
2698 /* Create thunks for alternate entry points. */ | |
2699 | |
2700 static void | |
2701 build_entry_thunks (gfc_namespace * ns, bool global) | |
2702 { | |
2703 gfc_formal_arglist *formal; | |
2704 gfc_formal_arglist *thunk_formal; | |
2705 gfc_entry_list *el; | |
2706 gfc_symbol *thunk_sym; | |
2707 stmtblock_t body; | |
2708 tree thunk_fndecl; | |
2709 tree tmp; | |
2710 locus old_loc; | |
2711 | |
2712 /* This should always be a toplevel function. */ | |
2713 gcc_assert (current_function_decl == NULL_TREE); | |
2714 | |
2715 gfc_save_backend_locus (&old_loc); | |
2716 for (el = ns->entries; el; el = el->next) | |
2717 { | |
2718 vec<tree, va_gc> *args = NULL; | |
2719 vec<tree, va_gc> *string_args = NULL; | |
2720 | |
2721 thunk_sym = el->sym; | |
2722 | |
2723 build_function_decl (thunk_sym, global); | |
2724 create_function_arglist (thunk_sym); | |
2725 | |
2726 trans_function_start (thunk_sym); | |
2727 | |
2728 thunk_fndecl = thunk_sym->backend_decl; | |
2729 | |
2730 gfc_init_block (&body); | |
2731 | |
2732 /* Pass extra parameter identifying this entry point. */ | |
2733 tmp = build_int_cst (gfc_array_index_type, el->id); | |
2734 vec_safe_push (args, tmp); | |
2735 | |
2736 if (thunk_sym->attr.function) | |
2737 { | |
2738 if (gfc_return_by_reference (ns->proc_name)) | |
2739 { | |
2740 tree ref = DECL_ARGUMENTS (current_function_decl); | |
2741 vec_safe_push (args, ref); | |
2742 if (ns->proc_name->ts.type == BT_CHARACTER) | |
2743 vec_safe_push (args, DECL_CHAIN (ref)); | |
2744 } | |
2745 } | |
2746 | |
2747 for (formal = gfc_sym_get_dummy_args (ns->proc_name); formal; | |
2748 formal = formal->next) | |
2749 { | |
2750 /* Ignore alternate returns. */ | |
2751 if (formal->sym == NULL) | |
2752 continue; | |
2753 | |
2754 /* We don't have a clever way of identifying arguments, so resort to | |
2755 a brute-force search. */ | |
2756 for (thunk_formal = gfc_sym_get_dummy_args (thunk_sym); | |
2757 thunk_formal; | |
2758 thunk_formal = thunk_formal->next) | |
2759 { | |
2760 if (thunk_formal->sym == formal->sym) | |
2761 break; | |
2762 } | |
2763 | |
2764 if (thunk_formal) | |
2765 { | |
2766 /* Pass the argument. */ | |
2767 DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1; | |
2768 vec_safe_push (args, thunk_formal->sym->backend_decl); | |
2769 if (formal->sym->ts.type == BT_CHARACTER) | |
2770 { | |
2771 tmp = thunk_formal->sym->ts.u.cl->backend_decl; | |
2772 vec_safe_push (string_args, tmp); | |
2773 } | |
2774 } | |
2775 else | |
2776 { | |
2777 /* Pass NULL for a missing argument. */ | |
2778 vec_safe_push (args, null_pointer_node); | |
2779 if (formal->sym->ts.type == BT_CHARACTER) | |
2780 { | |
2781 tmp = build_int_cst (gfc_charlen_type_node, 0); | |
2782 vec_safe_push (string_args, tmp); | |
2783 } | |
2784 } | |
2785 } | |
2786 | |
2787 /* Call the master function. */ | |
2788 vec_safe_splice (args, string_args); | |
2789 tmp = ns->proc_name->backend_decl; | |
2790 tmp = build_call_expr_loc_vec (input_location, tmp, args); | |
2791 if (ns->proc_name->attr.mixed_entry_master) | |
2792 { | |
2793 tree union_decl, field; | |
2794 tree master_type = TREE_TYPE (ns->proc_name->backend_decl); | |
2795 | |
2796 union_decl = build_decl (input_location, | |
2797 VAR_DECL, get_identifier ("__result"), | |
2798 TREE_TYPE (master_type)); | |
2799 DECL_ARTIFICIAL (union_decl) = 1; | |
2800 DECL_EXTERNAL (union_decl) = 0; | |
2801 TREE_PUBLIC (union_decl) = 0; | |
2802 TREE_USED (union_decl) = 1; | |
2803 layout_decl (union_decl, 0); | |
2804 pushdecl (union_decl); | |
2805 | |
2806 DECL_CONTEXT (union_decl) = current_function_decl; | |
2807 tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
2808 TREE_TYPE (union_decl), union_decl, tmp); | |
2809 gfc_add_expr_to_block (&body, tmp); | |
2810 | |
2811 for (field = TYPE_FIELDS (TREE_TYPE (union_decl)); | |
2812 field; field = DECL_CHAIN (field)) | |
2813 if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), | |
2814 thunk_sym->result->name) == 0) | |
2815 break; | |
2816 gcc_assert (field != NULL_TREE); | |
2817 tmp = fold_build3_loc (input_location, COMPONENT_REF, | |
2818 TREE_TYPE (field), union_decl, field, | |
2819 NULL_TREE); | |
2820 tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
2821 TREE_TYPE (DECL_RESULT (current_function_decl)), | |
2822 DECL_RESULT (current_function_decl), tmp); | |
2823 tmp = build1_v (RETURN_EXPR, tmp); | |
2824 } | |
2825 else if (TREE_TYPE (DECL_RESULT (current_function_decl)) | |
2826 != void_type_node) | |
2827 { | |
2828 tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
2829 TREE_TYPE (DECL_RESULT (current_function_decl)), | |
2830 DECL_RESULT (current_function_decl), tmp); | |
2831 tmp = build1_v (RETURN_EXPR, tmp); | |
2832 } | |
2833 gfc_add_expr_to_block (&body, tmp); | |
2834 | |
2835 /* Finish off this function and send it for code generation. */ | |
2836 DECL_SAVED_TREE (thunk_fndecl) = gfc_finish_block (&body); | |
2837 tmp = getdecls (); | |
2838 poplevel (1, 1); | |
2839 BLOCK_SUPERCONTEXT (DECL_INITIAL (thunk_fndecl)) = thunk_fndecl; | |
2840 DECL_SAVED_TREE (thunk_fndecl) | |
2841 = build3_v (BIND_EXPR, tmp, DECL_SAVED_TREE (thunk_fndecl), | |
2842 DECL_INITIAL (thunk_fndecl)); | |
2843 | |
2844 /* Output the GENERIC tree. */ | |
2845 dump_function (TDI_original, thunk_fndecl); | |
2846 | |
2847 /* Store the end of the function, so that we get good line number | |
2848 info for the epilogue. */ | |
2849 cfun->function_end_locus = input_location; | |
2850 | |
2851 /* We're leaving the context of this function, so zap cfun. | |
2852 It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
2853 tree_rest_of_compilation. */ | |
2854 set_cfun (NULL); | |
2855 | |
2856 current_function_decl = NULL_TREE; | |
2857 | |
2858 cgraph_node::finalize_function (thunk_fndecl, true); | |
2859 | |
2860 /* We share the symbols in the formal argument list with other entry | |
2861 points and the master function. Clear them so that they are | |
2862 recreated for each function. */ | |
2863 for (formal = gfc_sym_get_dummy_args (thunk_sym); formal; | |
2864 formal = formal->next) | |
2865 if (formal->sym != NULL) /* Ignore alternate returns. */ | |
2866 { | |
2867 formal->sym->backend_decl = NULL_TREE; | |
2868 if (formal->sym->ts.type == BT_CHARACTER) | |
2869 formal->sym->ts.u.cl->backend_decl = NULL_TREE; | |
2870 } | |
2871 | |
2872 if (thunk_sym->attr.function) | |
2873 { | |
2874 if (thunk_sym->ts.type == BT_CHARACTER) | |
2875 thunk_sym->ts.u.cl->backend_decl = NULL_TREE; | |
2876 if (thunk_sym->result->ts.type == BT_CHARACTER) | |
2877 thunk_sym->result->ts.u.cl->backend_decl = NULL_TREE; | |
2878 } | |
2879 } | |
2880 | |
2881 gfc_restore_backend_locus (&old_loc); | |
2882 } | |
2883 | |
2884 | |
2885 /* Create a decl for a function, and create any thunks for alternate entry | |
2886 points. If global is true, generate the function in the global binding | |
2887 level, otherwise in the current binding level (which can be global). */ | |
2888 | |
2889 void | |
2890 gfc_create_function_decl (gfc_namespace * ns, bool global) | |
2891 { | |
2892 /* Create a declaration for the master function. */ | |
2893 build_function_decl (ns->proc_name, global); | |
2894 | |
2895 /* Compile the entry thunks. */ | |
2896 if (ns->entries) | |
2897 build_entry_thunks (ns, global); | |
2898 | |
2899 /* Now create the read argument list. */ | |
2900 create_function_arglist (ns->proc_name); | |
2901 | |
2902 if (ns->omp_declare_simd) | |
2903 gfc_trans_omp_declare_simd (ns); | |
2904 } | |
2905 | |
2906 /* Return the decl used to hold the function return value. If | |
2907 parent_flag is set, the context is the parent_scope. */ | |
2908 | |
2909 tree | |
2910 gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag) | |
2911 { | |
2912 tree decl; | |
2913 tree length; | |
2914 tree this_fake_result_decl; | |
2915 tree this_function_decl; | |
2916 | |
2917 char name[GFC_MAX_SYMBOL_LEN + 10]; | |
2918 | |
2919 if (parent_flag) | |
2920 { | |
2921 this_fake_result_decl = parent_fake_result_decl; | |
2922 this_function_decl = DECL_CONTEXT (current_function_decl); | |
2923 } | |
2924 else | |
2925 { | |
2926 this_fake_result_decl = current_fake_result_decl; | |
2927 this_function_decl = current_function_decl; | |
2928 } | |
2929 | |
2930 if (sym | |
2931 && sym->ns->proc_name->backend_decl == this_function_decl | |
2932 && sym->ns->proc_name->attr.entry_master | |
2933 && sym != sym->ns->proc_name) | |
2934 { | |
2935 tree t = NULL, var; | |
2936 if (this_fake_result_decl != NULL) | |
2937 for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t)) | |
2938 if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0) | |
2939 break; | |
2940 if (t) | |
2941 return TREE_VALUE (t); | |
2942 decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag); | |
2943 | |
2944 if (parent_flag) | |
2945 this_fake_result_decl = parent_fake_result_decl; | |
2946 else | |
2947 this_fake_result_decl = current_fake_result_decl; | |
2948 | |
2949 if (decl && sym->ns->proc_name->attr.mixed_entry_master) | |
2950 { | |
2951 tree field; | |
2952 | |
2953 for (field = TYPE_FIELDS (TREE_TYPE (decl)); | |
2954 field; field = DECL_CHAIN (field)) | |
2955 if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), | |
2956 sym->name) == 0) | |
2957 break; | |
2958 | |
2959 gcc_assert (field != NULL_TREE); | |
2960 decl = fold_build3_loc (input_location, COMPONENT_REF, | |
2961 TREE_TYPE (field), decl, field, NULL_TREE); | |
2962 } | |
2963 | |
2964 var = create_tmp_var_raw (TREE_TYPE (decl), sym->name); | |
2965 if (parent_flag) | |
2966 gfc_add_decl_to_parent_function (var); | |
2967 else | |
2968 gfc_add_decl_to_function (var); | |
2969 | |
2970 SET_DECL_VALUE_EXPR (var, decl); | |
2971 DECL_HAS_VALUE_EXPR_P (var) = 1; | |
2972 GFC_DECL_RESULT (var) = 1; | |
2973 | |
2974 TREE_CHAIN (this_fake_result_decl) | |
2975 = tree_cons (get_identifier (sym->name), var, | |
2976 TREE_CHAIN (this_fake_result_decl)); | |
2977 return var; | |
2978 } | |
2979 | |
2980 if (this_fake_result_decl != NULL_TREE) | |
2981 return TREE_VALUE (this_fake_result_decl); | |
2982 | |
2983 /* Only when gfc_get_fake_result_decl is called by gfc_trans_return, | |
2984 sym is NULL. */ | |
2985 if (!sym) | |
2986 return NULL_TREE; | |
2987 | |
2988 if (sym->ts.type == BT_CHARACTER) | |
2989 { | |
2990 if (sym->ts.u.cl->backend_decl == NULL_TREE) | |
2991 length = gfc_create_string_length (sym); | |
2992 else | |
2993 length = sym->ts.u.cl->backend_decl; | |
2994 if (VAR_P (length) && DECL_CONTEXT (length) == NULL_TREE) | |
2995 gfc_add_decl_to_function (length); | |
2996 } | |
2997 | |
2998 if (gfc_return_by_reference (sym)) | |
2999 { | |
3000 decl = DECL_ARGUMENTS (this_function_decl); | |
3001 | |
3002 if (sym->ns->proc_name->backend_decl == this_function_decl | |
3003 && sym->ns->proc_name->attr.entry_master) | |
3004 decl = DECL_CHAIN (decl); | |
3005 | |
3006 TREE_USED (decl) = 1; | |
3007 if (sym->as) | |
3008 decl = gfc_build_dummy_array_decl (sym, decl); | |
3009 } | |
3010 else | |
3011 { | |
3012 sprintf (name, "__result_%.20s", | |
3013 IDENTIFIER_POINTER (DECL_NAME (this_function_decl))); | |
3014 | |
3015 if (!sym->attr.mixed_entry_master && sym->attr.function) | |
3016 decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), | |
3017 VAR_DECL, get_identifier (name), | |
3018 gfc_sym_type (sym)); | |
3019 else | |
3020 decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), | |
3021 VAR_DECL, get_identifier (name), | |
3022 TREE_TYPE (TREE_TYPE (this_function_decl))); | |
3023 DECL_ARTIFICIAL (decl) = 1; | |
3024 DECL_EXTERNAL (decl) = 0; | |
3025 TREE_PUBLIC (decl) = 0; | |
3026 TREE_USED (decl) = 1; | |
3027 GFC_DECL_RESULT (decl) = 1; | |
3028 TREE_ADDRESSABLE (decl) = 1; | |
3029 | |
3030 layout_decl (decl, 0); | |
3031 gfc_finish_decl_attrs (decl, &sym->attr); | |
3032 | |
3033 if (parent_flag) | |
3034 gfc_add_decl_to_parent_function (decl); | |
3035 else | |
3036 gfc_add_decl_to_function (decl); | |
3037 } | |
3038 | |
3039 if (parent_flag) | |
3040 parent_fake_result_decl = build_tree_list (NULL, decl); | |
3041 else | |
3042 current_fake_result_decl = build_tree_list (NULL, decl); | |
3043 | |
3044 return decl; | |
3045 } | |
3046 | |
3047 | |
3048 /* Builds a function decl. The remaining parameters are the types of the | |
3049 function arguments. Negative nargs indicates a varargs function. */ | |
3050 | |
3051 static tree | |
3052 build_library_function_decl_1 (tree name, const char *spec, | |
3053 tree rettype, int nargs, va_list p) | |
3054 { | |
3055 vec<tree, va_gc> *arglist; | |
3056 tree fntype; | |
3057 tree fndecl; | |
3058 int n; | |
3059 | |
3060 /* Library functions must be declared with global scope. */ | |
3061 gcc_assert (current_function_decl == NULL_TREE); | |
3062 | |
3063 /* Create a list of the argument types. */ | |
3064 vec_alloc (arglist, abs (nargs)); | |
3065 for (n = abs (nargs); n > 0; n--) | |
3066 { | |
3067 tree argtype = va_arg (p, tree); | |
3068 arglist->quick_push (argtype); | |
3069 } | |
3070 | |
3071 /* Build the function type and decl. */ | |
3072 if (nargs >= 0) | |
3073 fntype = build_function_type_vec (rettype, arglist); | |
3074 else | |
3075 fntype = build_varargs_function_type_vec (rettype, arglist); | |
3076 if (spec) | |
3077 { | |
3078 tree attr_args = build_tree_list (NULL_TREE, | |
3079 build_string (strlen (spec), spec)); | |
3080 tree attrs = tree_cons (get_identifier ("fn spec"), | |
3081 attr_args, TYPE_ATTRIBUTES (fntype)); | |
3082 fntype = build_type_attribute_variant (fntype, attrs); | |
3083 } | |
3084 fndecl = build_decl (input_location, | |
3085 FUNCTION_DECL, name, fntype); | |
3086 | |
3087 /* Mark this decl as external. */ | |
3088 DECL_EXTERNAL (fndecl) = 1; | |
3089 TREE_PUBLIC (fndecl) = 1; | |
3090 | |
3091 pushdecl (fndecl); | |
3092 | |
3093 rest_of_decl_compilation (fndecl, 1, 0); | |
3094 | |
3095 return fndecl; | |
3096 } | |
3097 | |
3098 /* Builds a function decl. The remaining parameters are the types of the | |
3099 function arguments. Negative nargs indicates a varargs function. */ | |
3100 | |
3101 tree | |
3102 gfc_build_library_function_decl (tree name, tree rettype, int nargs, ...) | |
3103 { | |
3104 tree ret; | |
3105 va_list args; | |
3106 va_start (args, nargs); | |
3107 ret = build_library_function_decl_1 (name, NULL, rettype, nargs, args); | |
3108 va_end (args); | |
3109 return ret; | |
3110 } | |
3111 | |
3112 /* Builds a function decl. The remaining parameters are the types of the | |
3113 function arguments. Negative nargs indicates a varargs function. | |
3114 The SPEC parameter specifies the function argument and return type | |
3115 specification according to the fnspec function type attribute. */ | |
3116 | |
3117 tree | |
3118 gfc_build_library_function_decl_with_spec (tree name, const char *spec, | |
3119 tree rettype, int nargs, ...) | |
3120 { | |
3121 tree ret; | |
3122 va_list args; | |
3123 va_start (args, nargs); | |
3124 ret = build_library_function_decl_1 (name, spec, rettype, nargs, args); | |
3125 va_end (args); | |
3126 return ret; | |
3127 } | |
3128 | |
3129 static void | |
3130 gfc_build_intrinsic_function_decls (void) | |
3131 { | |
3132 tree gfc_int4_type_node = gfc_get_int_type (4); | |
3133 tree gfc_pint4_type_node = build_pointer_type (gfc_int4_type_node); | |
3134 tree gfc_int8_type_node = gfc_get_int_type (8); | |
3135 tree gfc_pint8_type_node = build_pointer_type (gfc_int8_type_node); | |
3136 tree gfc_int16_type_node = gfc_get_int_type (16); | |
3137 tree gfc_logical4_type_node = gfc_get_logical_type (4); | |
3138 tree pchar1_type_node = gfc_get_pchar_type (1); | |
3139 tree pchar4_type_node = gfc_get_pchar_type (4); | |
3140 | |
3141 /* String functions. */ | |
3142 gfor_fndecl_compare_string = gfc_build_library_function_decl_with_spec ( | |
3143 get_identifier (PREFIX("compare_string")), "..R.R", | |
3144 integer_type_node, 4, gfc_charlen_type_node, pchar1_type_node, | |
3145 gfc_charlen_type_node, pchar1_type_node); | |
3146 DECL_PURE_P (gfor_fndecl_compare_string) = 1; | |
3147 TREE_NOTHROW (gfor_fndecl_compare_string) = 1; | |
3148 | |
3149 gfor_fndecl_concat_string = gfc_build_library_function_decl_with_spec ( | |
3150 get_identifier (PREFIX("concat_string")), "..W.R.R", | |
3151 void_type_node, 6, gfc_charlen_type_node, pchar1_type_node, | |
3152 gfc_charlen_type_node, pchar1_type_node, | |
3153 gfc_charlen_type_node, pchar1_type_node); | |
3154 TREE_NOTHROW (gfor_fndecl_concat_string) = 1; | |
3155 | |
3156 gfor_fndecl_string_len_trim = gfc_build_library_function_decl_with_spec ( | |
3157 get_identifier (PREFIX("string_len_trim")), "..R", | |
3158 gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar1_type_node); | |
3159 DECL_PURE_P (gfor_fndecl_string_len_trim) = 1; | |
3160 TREE_NOTHROW (gfor_fndecl_string_len_trim) = 1; | |
3161 | |
3162 gfor_fndecl_string_index = gfc_build_library_function_decl_with_spec ( | |
3163 get_identifier (PREFIX("string_index")), "..R.R.", | |
3164 gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
3165 gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
3166 DECL_PURE_P (gfor_fndecl_string_index) = 1; | |
3167 TREE_NOTHROW (gfor_fndecl_string_index) = 1; | |
3168 | |
3169 gfor_fndecl_string_scan = gfc_build_library_function_decl_with_spec ( | |
3170 get_identifier (PREFIX("string_scan")), "..R.R.", | |
3171 gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
3172 gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
3173 DECL_PURE_P (gfor_fndecl_string_scan) = 1; | |
3174 TREE_NOTHROW (gfor_fndecl_string_scan) = 1; | |
3175 | |
3176 gfor_fndecl_string_verify = gfc_build_library_function_decl_with_spec ( | |
3177 get_identifier (PREFIX("string_verify")), "..R.R.", | |
3178 gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
3179 gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
3180 DECL_PURE_P (gfor_fndecl_string_verify) = 1; | |
3181 TREE_NOTHROW (gfor_fndecl_string_verify) = 1; | |
3182 | |
3183 gfor_fndecl_string_trim = gfc_build_library_function_decl_with_spec ( | |
3184 get_identifier (PREFIX("string_trim")), ".Ww.R", | |
3185 void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
3186 build_pointer_type (pchar1_type_node), gfc_charlen_type_node, | |
3187 pchar1_type_node); | |
3188 | |
3189 gfor_fndecl_string_minmax = gfc_build_library_function_decl_with_spec ( | |
3190 get_identifier (PREFIX("string_minmax")), ".Ww.R", | |
3191 void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
3192 build_pointer_type (pchar1_type_node), integer_type_node, | |
3193 integer_type_node); | |
3194 | |
3195 gfor_fndecl_adjustl = gfc_build_library_function_decl_with_spec ( | |
3196 get_identifier (PREFIX("adjustl")), ".W.R", | |
3197 void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
3198 pchar1_type_node); | |
3199 TREE_NOTHROW (gfor_fndecl_adjustl) = 1; | |
3200 | |
3201 gfor_fndecl_adjustr = gfc_build_library_function_decl_with_spec ( | |
3202 get_identifier (PREFIX("adjustr")), ".W.R", | |
3203 void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
3204 pchar1_type_node); | |
3205 TREE_NOTHROW (gfor_fndecl_adjustr) = 1; | |
3206 | |
3207 gfor_fndecl_select_string = gfc_build_library_function_decl_with_spec ( | |
3208 get_identifier (PREFIX("select_string")), ".R.R.", | |
3209 integer_type_node, 4, pvoid_type_node, integer_type_node, | |
3210 pchar1_type_node, gfc_charlen_type_node); | |
3211 DECL_PURE_P (gfor_fndecl_select_string) = 1; | |
3212 TREE_NOTHROW (gfor_fndecl_select_string) = 1; | |
3213 | |
3214 gfor_fndecl_compare_string_char4 = gfc_build_library_function_decl_with_spec ( | |
3215 get_identifier (PREFIX("compare_string_char4")), "..R.R", | |
3216 integer_type_node, 4, gfc_charlen_type_node, pchar4_type_node, | |
3217 gfc_charlen_type_node, pchar4_type_node); | |
3218 DECL_PURE_P (gfor_fndecl_compare_string_char4) = 1; | |
3219 TREE_NOTHROW (gfor_fndecl_compare_string_char4) = 1; | |
3220 | |
3221 gfor_fndecl_concat_string_char4 = gfc_build_library_function_decl_with_spec ( | |
3222 get_identifier (PREFIX("concat_string_char4")), "..W.R.R", | |
3223 void_type_node, 6, gfc_charlen_type_node, pchar4_type_node, | |
3224 gfc_charlen_type_node, pchar4_type_node, gfc_charlen_type_node, | |
3225 pchar4_type_node); | |
3226 TREE_NOTHROW (gfor_fndecl_concat_string_char4) = 1; | |
3227 | |
3228 gfor_fndecl_string_len_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
3229 get_identifier (PREFIX("string_len_trim_char4")), "..R", | |
3230 gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar4_type_node); | |
3231 DECL_PURE_P (gfor_fndecl_string_len_trim_char4) = 1; | |
3232 TREE_NOTHROW (gfor_fndecl_string_len_trim_char4) = 1; | |
3233 | |
3234 gfor_fndecl_string_index_char4 = gfc_build_library_function_decl_with_spec ( | |
3235 get_identifier (PREFIX("string_index_char4")), "..R.R.", | |
3236 gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
3237 gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
3238 DECL_PURE_P (gfor_fndecl_string_index_char4) = 1; | |
3239 TREE_NOTHROW (gfor_fndecl_string_index_char4) = 1; | |
3240 | |
3241 gfor_fndecl_string_scan_char4 = gfc_build_library_function_decl_with_spec ( | |
3242 get_identifier (PREFIX("string_scan_char4")), "..R.R.", | |
3243 gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
3244 gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
3245 DECL_PURE_P (gfor_fndecl_string_scan_char4) = 1; | |
3246 TREE_NOTHROW (gfor_fndecl_string_scan_char4) = 1; | |
3247 | |
3248 gfor_fndecl_string_verify_char4 = gfc_build_library_function_decl_with_spec ( | |
3249 get_identifier (PREFIX("string_verify_char4")), "..R.R.", | |
3250 gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
3251 gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
3252 DECL_PURE_P (gfor_fndecl_string_verify_char4) = 1; | |
3253 TREE_NOTHROW (gfor_fndecl_string_verify_char4) = 1; | |
3254 | |
3255 gfor_fndecl_string_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
3256 get_identifier (PREFIX("string_trim_char4")), ".Ww.R", | |
3257 void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
3258 build_pointer_type (pchar4_type_node), gfc_charlen_type_node, | |
3259 pchar4_type_node); | |
3260 | |
3261 gfor_fndecl_string_minmax_char4 = gfc_build_library_function_decl_with_spec ( | |
3262 get_identifier (PREFIX("string_minmax_char4")), ".Ww.R", | |
3263 void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
3264 build_pointer_type (pchar4_type_node), integer_type_node, | |
3265 integer_type_node); | |
3266 | |
3267 gfor_fndecl_adjustl_char4 = gfc_build_library_function_decl_with_spec ( | |
3268 get_identifier (PREFIX("adjustl_char4")), ".W.R", | |
3269 void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
3270 pchar4_type_node); | |
3271 TREE_NOTHROW (gfor_fndecl_adjustl_char4) = 1; | |
3272 | |
3273 gfor_fndecl_adjustr_char4 = gfc_build_library_function_decl_with_spec ( | |
3274 get_identifier (PREFIX("adjustr_char4")), ".W.R", | |
3275 void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
3276 pchar4_type_node); | |
3277 TREE_NOTHROW (gfor_fndecl_adjustr_char4) = 1; | |
3278 | |
3279 gfor_fndecl_select_string_char4 = gfc_build_library_function_decl_with_spec ( | |
3280 get_identifier (PREFIX("select_string_char4")), ".R.R.", | |
3281 integer_type_node, 4, pvoid_type_node, integer_type_node, | |
3282 pvoid_type_node, gfc_charlen_type_node); | |
3283 DECL_PURE_P (gfor_fndecl_select_string_char4) = 1; | |
3284 TREE_NOTHROW (gfor_fndecl_select_string_char4) = 1; | |
3285 | |
3286 | |
3287 /* Conversion between character kinds. */ | |
3288 | |
3289 gfor_fndecl_convert_char1_to_char4 = gfc_build_library_function_decl_with_spec ( | |
3290 get_identifier (PREFIX("convert_char1_to_char4")), ".w.R", | |
3291 void_type_node, 3, build_pointer_type (pchar4_type_node), | |
3292 gfc_charlen_type_node, pchar1_type_node); | |
3293 | |
3294 gfor_fndecl_convert_char4_to_char1 = gfc_build_library_function_decl_with_spec ( | |
3295 get_identifier (PREFIX("convert_char4_to_char1")), ".w.R", | |
3296 void_type_node, 3, build_pointer_type (pchar1_type_node), | |
3297 gfc_charlen_type_node, pchar4_type_node); | |
3298 | |
3299 /* Misc. functions. */ | |
3300 | |
3301 gfor_fndecl_ttynam = gfc_build_library_function_decl_with_spec ( | |
3302 get_identifier (PREFIX("ttynam")), ".W", | |
3303 void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
3304 integer_type_node); | |
3305 | |
3306 gfor_fndecl_fdate = gfc_build_library_function_decl_with_spec ( | |
3307 get_identifier (PREFIX("fdate")), ".W", | |
3308 void_type_node, 2, pchar_type_node, gfc_charlen_type_node); | |
3309 | |
3310 gfor_fndecl_ctime = gfc_build_library_function_decl_with_spec ( | |
3311 get_identifier (PREFIX("ctime")), ".W", | |
3312 void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
3313 gfc_int8_type_node); | |
3314 | |
3315 gfor_fndecl_sc_kind = gfc_build_library_function_decl_with_spec ( | |
3316 get_identifier (PREFIX("selected_char_kind")), "..R", | |
3317 gfc_int4_type_node, 2, gfc_charlen_type_node, pchar_type_node); | |
3318 DECL_PURE_P (gfor_fndecl_sc_kind) = 1; | |
3319 TREE_NOTHROW (gfor_fndecl_sc_kind) = 1; | |
3320 | |
3321 gfor_fndecl_si_kind = gfc_build_library_function_decl_with_spec ( | |
3322 get_identifier (PREFIX("selected_int_kind")), ".R", | |
3323 gfc_int4_type_node, 1, pvoid_type_node); | |
3324 DECL_PURE_P (gfor_fndecl_si_kind) = 1; | |
3325 TREE_NOTHROW (gfor_fndecl_si_kind) = 1; | |
3326 | |
3327 gfor_fndecl_sr_kind = gfc_build_library_function_decl_with_spec ( | |
3328 get_identifier (PREFIX("selected_real_kind2008")), ".RR", | |
3329 gfc_int4_type_node, 3, pvoid_type_node, pvoid_type_node, | |
3330 pvoid_type_node); | |
3331 DECL_PURE_P (gfor_fndecl_sr_kind) = 1; | |
3332 TREE_NOTHROW (gfor_fndecl_sr_kind) = 1; | |
3333 | |
3334 gfor_fndecl_system_clock4 = gfc_build_library_function_decl ( | |
3335 get_identifier (PREFIX("system_clock_4")), | |
3336 void_type_node, 3, gfc_pint4_type_node, gfc_pint4_type_node, | |
3337 gfc_pint4_type_node); | |
3338 | |
3339 gfor_fndecl_system_clock8 = gfc_build_library_function_decl ( | |
3340 get_identifier (PREFIX("system_clock_8")), | |
3341 void_type_node, 3, gfc_pint8_type_node, gfc_pint8_type_node, | |
3342 gfc_pint8_type_node); | |
3343 | |
3344 /* Power functions. */ | |
3345 { | |
3346 tree ctype, rtype, itype, jtype; | |
3347 int rkind, ikind, jkind; | |
3348 #define NIKINDS 3 | |
3349 #define NRKINDS 4 | |
3350 static int ikinds[NIKINDS] = {4, 8, 16}; | |
3351 static int rkinds[NRKINDS] = {4, 8, 10, 16}; | |
3352 char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */ | |
3353 | |
3354 for (ikind=0; ikind < NIKINDS; ikind++) | |
3355 { | |
3356 itype = gfc_get_int_type (ikinds[ikind]); | |
3357 | |
3358 for (jkind=0; jkind < NIKINDS; jkind++) | |
3359 { | |
3360 jtype = gfc_get_int_type (ikinds[jkind]); | |
3361 if (itype && jtype) | |
3362 { | |
3363 sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind], | |
3364 ikinds[jkind]); | |
3365 gfor_fndecl_math_powi[jkind][ikind].integer = | |
3366 gfc_build_library_function_decl (get_identifier (name), | |
3367 jtype, 2, jtype, itype); | |
3368 TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; | |
3369 TREE_NOTHROW (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; | |
3370 } | |
3371 } | |
3372 | |
3373 for (rkind = 0; rkind < NRKINDS; rkind ++) | |
3374 { | |
3375 rtype = gfc_get_real_type (rkinds[rkind]); | |
3376 if (rtype && itype) | |
3377 { | |
3378 sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind], | |
3379 ikinds[ikind]); | |
3380 gfor_fndecl_math_powi[rkind][ikind].real = | |
3381 gfc_build_library_function_decl (get_identifier (name), | |
3382 rtype, 2, rtype, itype); | |
3383 TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1; | |
3384 TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].real) = 1; | |
3385 } | |
3386 | |
3387 ctype = gfc_get_complex_type (rkinds[rkind]); | |
3388 if (ctype && itype) | |
3389 { | |
3390 sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind], | |
3391 ikinds[ikind]); | |
3392 gfor_fndecl_math_powi[rkind][ikind].cmplx = | |
3393 gfc_build_library_function_decl (get_identifier (name), | |
3394 ctype, 2,ctype, itype); | |
3395 TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; | |
3396 TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; | |
3397 } | |
3398 } | |
3399 } | |
3400 #undef NIKINDS | |
3401 #undef NRKINDS | |
3402 } | |
3403 | |
3404 gfor_fndecl_math_ishftc4 = gfc_build_library_function_decl ( | |
3405 get_identifier (PREFIX("ishftc4")), | |
3406 gfc_int4_type_node, 3, gfc_int4_type_node, gfc_int4_type_node, | |
3407 gfc_int4_type_node); | |
3408 TREE_READONLY (gfor_fndecl_math_ishftc4) = 1; | |
3409 TREE_NOTHROW (gfor_fndecl_math_ishftc4) = 1; | |
3410 | |
3411 gfor_fndecl_math_ishftc8 = gfc_build_library_function_decl ( | |
3412 get_identifier (PREFIX("ishftc8")), | |
3413 gfc_int8_type_node, 3, gfc_int8_type_node, gfc_int4_type_node, | |
3414 gfc_int4_type_node); | |
3415 TREE_READONLY (gfor_fndecl_math_ishftc8) = 1; | |
3416 TREE_NOTHROW (gfor_fndecl_math_ishftc8) = 1; | |
3417 | |
3418 if (gfc_int16_type_node) | |
3419 { | |
3420 gfor_fndecl_math_ishftc16 = gfc_build_library_function_decl ( | |
3421 get_identifier (PREFIX("ishftc16")), | |
3422 gfc_int16_type_node, 3, gfc_int16_type_node, gfc_int4_type_node, | |
3423 gfc_int4_type_node); | |
3424 TREE_READONLY (gfor_fndecl_math_ishftc16) = 1; | |
3425 TREE_NOTHROW (gfor_fndecl_math_ishftc16) = 1; | |
3426 } | |
3427 | |
3428 /* BLAS functions. */ | |
3429 { | |
3430 tree pint = build_pointer_type (integer_type_node); | |
3431 tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind)); | |
3432 tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind)); | |
3433 tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind)); | |
3434 tree pz = build_pointer_type | |
3435 (gfc_get_complex_type (gfc_default_double_kind)); | |
3436 | |
3437 gfor_fndecl_sgemm = gfc_build_library_function_decl | |
3438 (get_identifier | |
3439 (flag_underscoring ? "sgemm_" : "sgemm"), | |
3440 void_type_node, 15, pchar_type_node, | |
3441 pchar_type_node, pint, pint, pint, ps, ps, pint, | |
3442 ps, pint, ps, ps, pint, integer_type_node, | |
3443 integer_type_node); | |
3444 gfor_fndecl_dgemm = gfc_build_library_function_decl | |
3445 (get_identifier | |
3446 (flag_underscoring ? "dgemm_" : "dgemm"), | |
3447 void_type_node, 15, pchar_type_node, | |
3448 pchar_type_node, pint, pint, pint, pd, pd, pint, | |
3449 pd, pint, pd, pd, pint, integer_type_node, | |
3450 integer_type_node); | |
3451 gfor_fndecl_cgemm = gfc_build_library_function_decl | |
3452 (get_identifier | |
3453 (flag_underscoring ? "cgemm_" : "cgemm"), | |
3454 void_type_node, 15, pchar_type_node, | |
3455 pchar_type_node, pint, pint, pint, pc, pc, pint, | |
3456 pc, pint, pc, pc, pint, integer_type_node, | |
3457 integer_type_node); | |
3458 gfor_fndecl_zgemm = gfc_build_library_function_decl | |
3459 (get_identifier | |
3460 (flag_underscoring ? "zgemm_" : "zgemm"), | |
3461 void_type_node, 15, pchar_type_node, | |
3462 pchar_type_node, pint, pint, pint, pz, pz, pint, | |
3463 pz, pint, pz, pz, pint, integer_type_node, | |
3464 integer_type_node); | |
3465 } | |
3466 | |
3467 /* Other functions. */ | |
3468 gfor_fndecl_size0 = gfc_build_library_function_decl_with_spec ( | |
3469 get_identifier (PREFIX("size0")), ".R", | |
3470 gfc_array_index_type, 1, pvoid_type_node); | |
3471 DECL_PURE_P (gfor_fndecl_size0) = 1; | |
3472 TREE_NOTHROW (gfor_fndecl_size0) = 1; | |
3473 | |
3474 gfor_fndecl_size1 = gfc_build_library_function_decl_with_spec ( | |
3475 get_identifier (PREFIX("size1")), ".R", | |
3476 gfc_array_index_type, 2, pvoid_type_node, gfc_array_index_type); | |
3477 DECL_PURE_P (gfor_fndecl_size1) = 1; | |
3478 TREE_NOTHROW (gfor_fndecl_size1) = 1; | |
3479 | |
3480 gfor_fndecl_iargc = gfc_build_library_function_decl ( | |
3481 get_identifier (PREFIX ("iargc")), gfc_int4_type_node, 0); | |
3482 TREE_NOTHROW (gfor_fndecl_iargc) = 1; | |
3483 } | |
3484 | |
3485 | |
3486 /* Make prototypes for runtime library functions. */ | |
3487 | |
3488 void | |
3489 gfc_build_builtin_function_decls (void) | |
3490 { | |
3491 tree gfc_int4_type_node = gfc_get_int_type (4); | |
3492 | |
3493 gfor_fndecl_stop_numeric = gfc_build_library_function_decl ( | |
3494 get_identifier (PREFIX("stop_numeric")), | |
3495 void_type_node, 1, gfc_int4_type_node); | |
3496 /* STOP doesn't return. */ | |
3497 TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1; | |
3498 | |
3499 gfor_fndecl_stop_string = gfc_build_library_function_decl_with_spec ( | |
3500 get_identifier (PREFIX("stop_string")), ".R.", | |
3501 void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
3502 /* STOP doesn't return. */ | |
3503 TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1; | |
3504 | |
3505 gfor_fndecl_error_stop_numeric = gfc_build_library_function_decl ( | |
3506 get_identifier (PREFIX("error_stop_numeric")), | |
3507 void_type_node, 1, gfc_int4_type_node); | |
3508 /* ERROR STOP doesn't return. */ | |
3509 TREE_THIS_VOLATILE (gfor_fndecl_error_stop_numeric) = 1; | |
3510 | |
3511 gfor_fndecl_error_stop_string = gfc_build_library_function_decl_with_spec ( | |
3512 get_identifier (PREFIX("error_stop_string")), ".R.", | |
3513 void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
3514 /* ERROR STOP doesn't return. */ | |
3515 TREE_THIS_VOLATILE (gfor_fndecl_error_stop_string) = 1; | |
3516 | |
3517 gfor_fndecl_pause_numeric = gfc_build_library_function_decl ( | |
3518 get_identifier (PREFIX("pause_numeric")), | |
3519 void_type_node, 1, gfc_int4_type_node); | |
3520 | |
3521 gfor_fndecl_pause_string = gfc_build_library_function_decl_with_spec ( | |
3522 get_identifier (PREFIX("pause_string")), ".R.", | |
3523 void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
3524 | |
3525 gfor_fndecl_runtime_error = gfc_build_library_function_decl_with_spec ( | |
3526 get_identifier (PREFIX("runtime_error")), ".R", | |
3527 void_type_node, -1, pchar_type_node); | |
3528 /* The runtime_error function does not return. */ | |
3529 TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1; | |
3530 | |
3531 gfor_fndecl_runtime_error_at = gfc_build_library_function_decl_with_spec ( | |
3532 get_identifier (PREFIX("runtime_error_at")), ".RR", | |
3533 void_type_node, -2, pchar_type_node, pchar_type_node); | |
3534 /* The runtime_error_at function does not return. */ | |
3535 TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1; | |
3536 | |
3537 gfor_fndecl_runtime_warning_at = gfc_build_library_function_decl_with_spec ( | |
3538 get_identifier (PREFIX("runtime_warning_at")), ".RR", | |
3539 void_type_node, -2, pchar_type_node, pchar_type_node); | |
3540 | |
3541 gfor_fndecl_generate_error = gfc_build_library_function_decl_with_spec ( | |
3542 get_identifier (PREFIX("generate_error")), ".R.R", | |
3543 void_type_node, 3, pvoid_type_node, integer_type_node, | |
3544 pchar_type_node); | |
3545 | |
3546 gfor_fndecl_os_error = gfc_build_library_function_decl_with_spec ( | |
3547 get_identifier (PREFIX("os_error")), ".R", | |
3548 void_type_node, 1, pchar_type_node); | |
3549 /* The runtime_error function does not return. */ | |
3550 TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1; | |
3551 | |
3552 gfor_fndecl_set_args = gfc_build_library_function_decl ( | |
3553 get_identifier (PREFIX("set_args")), | |
3554 void_type_node, 2, integer_type_node, | |
3555 build_pointer_type (pchar_type_node)); | |
3556 | |
3557 gfor_fndecl_set_fpe = gfc_build_library_function_decl ( | |
3558 get_identifier (PREFIX("set_fpe")), | |
3559 void_type_node, 1, integer_type_node); | |
3560 | |
3561 gfor_fndecl_ieee_procedure_entry = gfc_build_library_function_decl ( | |
3562 get_identifier (PREFIX("ieee_procedure_entry")), | |
3563 void_type_node, 1, pvoid_type_node); | |
3564 | |
3565 gfor_fndecl_ieee_procedure_exit = gfc_build_library_function_decl ( | |
3566 get_identifier (PREFIX("ieee_procedure_exit")), | |
3567 void_type_node, 1, pvoid_type_node); | |
3568 | |
3569 /* Keep the array dimension in sync with the call, later in this file. */ | |
3570 gfor_fndecl_set_options = gfc_build_library_function_decl_with_spec ( | |
3571 get_identifier (PREFIX("set_options")), "..R", | |
3572 void_type_node, 2, integer_type_node, | |
3573 build_pointer_type (integer_type_node)); | |
3574 | |
3575 gfor_fndecl_set_convert = gfc_build_library_function_decl ( | |
3576 get_identifier (PREFIX("set_convert")), | |
3577 void_type_node, 1, integer_type_node); | |
3578 | |
3579 gfor_fndecl_set_record_marker = gfc_build_library_function_decl ( | |
3580 get_identifier (PREFIX("set_record_marker")), | |
3581 void_type_node, 1, integer_type_node); | |
3582 | |
3583 gfor_fndecl_set_max_subrecord_length = gfc_build_library_function_decl ( | |
3584 get_identifier (PREFIX("set_max_subrecord_length")), | |
3585 void_type_node, 1, integer_type_node); | |
3586 | |
3587 gfor_fndecl_in_pack = gfc_build_library_function_decl_with_spec ( | |
3588 get_identifier (PREFIX("internal_pack")), ".r", | |
3589 pvoid_type_node, 1, pvoid_type_node); | |
3590 | |
3591 gfor_fndecl_in_unpack = gfc_build_library_function_decl_with_spec ( | |
3592 get_identifier (PREFIX("internal_unpack")), ".wR", | |
3593 void_type_node, 2, pvoid_type_node, pvoid_type_node); | |
3594 | |
3595 gfor_fndecl_associated = gfc_build_library_function_decl_with_spec ( | |
3596 get_identifier (PREFIX("associated")), ".RR", | |
3597 integer_type_node, 2, ppvoid_type_node, ppvoid_type_node); | |
3598 DECL_PURE_P (gfor_fndecl_associated) = 1; | |
3599 TREE_NOTHROW (gfor_fndecl_associated) = 1; | |
3600 | |
3601 /* Coarray library calls. */ | |
3602 if (flag_coarray == GFC_FCOARRAY_LIB) | |
3603 { | |
3604 tree pint_type, pppchar_type; | |
3605 | |
3606 pint_type = build_pointer_type (integer_type_node); | |
3607 pppchar_type | |
3608 = build_pointer_type (build_pointer_type (pchar_type_node)); | |
3609 | |
3610 gfor_fndecl_caf_init = gfc_build_library_function_decl ( | |
3611 get_identifier (PREFIX("caf_init")), void_type_node, | |
3612 2, pint_type, pppchar_type); | |
3613 | |
3614 gfor_fndecl_caf_finalize = gfc_build_library_function_decl ( | |
3615 get_identifier (PREFIX("caf_finalize")), void_type_node, 0); | |
3616 | |
3617 gfor_fndecl_caf_this_image = gfc_build_library_function_decl ( | |
3618 get_identifier (PREFIX("caf_this_image")), integer_type_node, | |
3619 1, integer_type_node); | |
3620 | |
3621 gfor_fndecl_caf_num_images = gfc_build_library_function_decl ( | |
3622 get_identifier (PREFIX("caf_num_images")), integer_type_node, | |
3623 2, integer_type_node, integer_type_node); | |
3624 | |
3625 gfor_fndecl_caf_register = gfc_build_library_function_decl_with_spec ( | |
3626 get_identifier (PREFIX("caf_register")), "RRWWWWR", void_type_node, 7, | |
3627 size_type_node, integer_type_node, ppvoid_type_node, pvoid_type_node, | |
3628 pint_type, pchar_type_node, integer_type_node); | |
3629 | |
3630 gfor_fndecl_caf_deregister = gfc_build_library_function_decl_with_spec ( | |
3631 get_identifier (PREFIX("caf_deregister")), "WRWWR", void_type_node, 5, | |
3632 ppvoid_type_node, integer_type_node, pint_type, pchar_type_node, | |
3633 integer_type_node); | |
3634 | |
3635 gfor_fndecl_caf_get = gfc_build_library_function_decl_with_spec ( | |
3636 get_identifier (PREFIX("caf_get")), ".R.RRWRRRW", void_type_node, 10, | |
3637 pvoid_type_node, size_type_node, integer_type_node, pvoid_type_node, | |
3638 pvoid_type_node, pvoid_type_node, integer_type_node, integer_type_node, | |
3639 boolean_type_node, pint_type); | |
3640 | |
3641 gfor_fndecl_caf_send = gfc_build_library_function_decl_with_spec ( | |
3642 get_identifier (PREFIX("caf_send")), ".R.RRRRRRW", void_type_node, 10, | |
3643 pvoid_type_node, size_type_node, integer_type_node, pvoid_type_node, | |
3644 pvoid_type_node, pvoid_type_node, integer_type_node, integer_type_node, | |
3645 boolean_type_node, pint_type); | |
3646 | |
3647 gfor_fndecl_caf_sendget = gfc_build_library_function_decl_with_spec ( | |
3648 get_identifier (PREFIX("caf_sendget")), ".R.RRRR.RRRRRR", | |
3649 void_type_node, 14, pvoid_type_node, size_type_node, integer_type_node, | |
3650 pvoid_type_node, pvoid_type_node, pvoid_type_node, size_type_node, | |
3651 integer_type_node, pvoid_type_node, pvoid_type_node, integer_type_node, | |
3652 integer_type_node, boolean_type_node, integer_type_node); | |
3653 | |
3654 gfor_fndecl_caf_get_by_ref = gfc_build_library_function_decl_with_spec ( | |
3655 get_identifier (PREFIX("caf_get_by_ref")), ".RWRRRRRW", void_type_node, | |
3656 9, pvoid_type_node, integer_type_node, pvoid_type_node, pvoid_type_node, | |
3657 integer_type_node, integer_type_node, boolean_type_node, | |
3658 boolean_type_node, pint_type); | |
3659 | |
3660 gfor_fndecl_caf_send_by_ref = gfc_build_library_function_decl_with_spec ( | |
3661 get_identifier (PREFIX("caf_send_by_ref")), ".RRRRRRRW", void_type_node, | |
3662 9, pvoid_type_node, integer_type_node, pvoid_type_node, pvoid_type_node, | |
3663 integer_type_node, integer_type_node, boolean_type_node, | |
3664 boolean_type_node, pint_type); | |
3665 | |
3666 gfor_fndecl_caf_sendget_by_ref | |
3667 = gfc_build_library_function_decl_with_spec ( | |
3668 get_identifier (PREFIX("caf_sendget_by_ref")), ".RR.RRRRRWW", | |
3669 void_type_node, 11, pvoid_type_node, integer_type_node, | |
3670 pvoid_type_node, pvoid_type_node, integer_type_node, | |
3671 pvoid_type_node, integer_type_node, integer_type_node, | |
3672 boolean_type_node, pint_type, pint_type); | |
3673 | |
3674 gfor_fndecl_caf_sync_all = gfc_build_library_function_decl_with_spec ( | |
3675 get_identifier (PREFIX("caf_sync_all")), ".WW", void_type_node, | |
3676 3, pint_type, pchar_type_node, integer_type_node); | |
3677 | |
3678 gfor_fndecl_caf_sync_memory = gfc_build_library_function_decl_with_spec ( | |
3679 get_identifier (PREFIX("caf_sync_memory")), ".WW", void_type_node, | |
3680 3, pint_type, pchar_type_node, integer_type_node); | |
3681 | |
3682 gfor_fndecl_caf_sync_images = gfc_build_library_function_decl_with_spec ( | |
3683 get_identifier (PREFIX("caf_sync_images")), ".RRWW", void_type_node, | |
3684 5, integer_type_node, pint_type, pint_type, | |
3685 pchar_type_node, integer_type_node); | |
3686 | |
3687 gfor_fndecl_caf_error_stop = gfc_build_library_function_decl ( | |
3688 get_identifier (PREFIX("caf_error_stop")), | |
3689 void_type_node, 1, gfc_int4_type_node); | |
3690 /* CAF's ERROR STOP doesn't return. */ | |
3691 TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop) = 1; | |
3692 | |
3693 gfor_fndecl_caf_error_stop_str = gfc_build_library_function_decl_with_spec ( | |
3694 get_identifier (PREFIX("caf_error_stop_str")), ".R.", | |
3695 void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
3696 /* CAF's ERROR STOP doesn't return. */ | |
3697 TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop_str) = 1; | |
3698 | |
3699 gfor_fndecl_caf_stop_numeric = gfc_build_library_function_decl_with_spec ( | |
3700 get_identifier (PREFIX("caf_stop_numeric")), ".R.", | |
3701 void_type_node, 1, gfc_int4_type_node); | |
3702 /* CAF's STOP doesn't return. */ | |
3703 TREE_THIS_VOLATILE (gfor_fndecl_caf_stop_numeric) = 1; | |
3704 | |
3705 gfor_fndecl_caf_stop_str = gfc_build_library_function_decl_with_spec ( | |
3706 get_identifier (PREFIX("caf_stop_str")), ".R.", | |
3707 void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
3708 /* CAF's STOP doesn't return. */ | |
3709 TREE_THIS_VOLATILE (gfor_fndecl_caf_stop_str) = 1; | |
3710 | |
3711 gfor_fndecl_caf_atomic_def = gfc_build_library_function_decl_with_spec ( | |
3712 get_identifier (PREFIX("caf_atomic_define")), "R..RW", | |
3713 void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node, | |
3714 pvoid_type_node, pint_type, integer_type_node, integer_type_node); | |
3715 | |
3716 gfor_fndecl_caf_atomic_ref = gfc_build_library_function_decl_with_spec ( | |
3717 get_identifier (PREFIX("caf_atomic_ref")), "R..WW", | |
3718 void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node, | |
3719 pvoid_type_node, pint_type, integer_type_node, integer_type_node); | |
3720 | |
3721 gfor_fndecl_caf_atomic_cas = gfc_build_library_function_decl_with_spec ( | |
3722 get_identifier (PREFIX("caf_atomic_cas")), "R..WRRW", | |
3723 void_type_node, 9, pvoid_type_node, size_type_node, integer_type_node, | |
3724 pvoid_type_node, pvoid_type_node, pvoid_type_node, pint_type, | |
3725 integer_type_node, integer_type_node); | |
3726 | |
3727 gfor_fndecl_caf_atomic_op = gfc_build_library_function_decl_with_spec ( | |
3728 get_identifier (PREFIX("caf_atomic_op")), ".R..RWW", | |
3729 void_type_node, 9, integer_type_node, pvoid_type_node, size_type_node, | |
3730 integer_type_node, pvoid_type_node, pvoid_type_node, pint_type, | |
3731 integer_type_node, integer_type_node); | |
3732 | |
3733 gfor_fndecl_caf_lock = gfc_build_library_function_decl_with_spec ( | |
3734 get_identifier (PREFIX("caf_lock")), "R..WWW", | |
3735 void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node, | |
3736 pint_type, pint_type, pchar_type_node, integer_type_node); | |
3737 | |
3738 gfor_fndecl_caf_unlock = gfc_build_library_function_decl_with_spec ( | |
3739 get_identifier (PREFIX("caf_unlock")), "R..WW", | |
3740 void_type_node, 6, pvoid_type_node, size_type_node, integer_type_node, | |
3741 pint_type, pchar_type_node, integer_type_node); | |
3742 | |
3743 gfor_fndecl_caf_event_post = gfc_build_library_function_decl_with_spec ( | |
3744 get_identifier (PREFIX("caf_event_post")), "R..WW", | |
3745 void_type_node, 6, pvoid_type_node, size_type_node, integer_type_node, | |
3746 pint_type, pchar_type_node, integer_type_node); | |
3747 | |
3748 gfor_fndecl_caf_event_wait = gfc_build_library_function_decl_with_spec ( | |
3749 get_identifier (PREFIX("caf_event_wait")), "R..WW", | |
3750 void_type_node, 6, pvoid_type_node, size_type_node, integer_type_node, | |
3751 pint_type, pchar_type_node, integer_type_node); | |
3752 | |
3753 gfor_fndecl_caf_event_query = gfc_build_library_function_decl_with_spec ( | |
3754 get_identifier (PREFIX("caf_event_query")), "R..WW", | |
3755 void_type_node, 5, pvoid_type_node, size_type_node, integer_type_node, | |
3756 pint_type, pint_type); | |
3757 | |
3758 gfor_fndecl_caf_fail_image = gfc_build_library_function_decl ( | |
3759 get_identifier (PREFIX("caf_fail_image")), void_type_node, 0); | |
3760 /* CAF's FAIL doesn't return. */ | |
3761 TREE_THIS_VOLATILE (gfor_fndecl_caf_fail_image) = 1; | |
3762 | |
3763 gfor_fndecl_caf_failed_images | |
3764 = gfc_build_library_function_decl_with_spec ( | |
3765 get_identifier (PREFIX("caf_failed_images")), "WRR", | |
3766 void_type_node, 3, pvoid_type_node, ppvoid_type_node, | |
3767 integer_type_node); | |
3768 | |
3769 gfor_fndecl_caf_image_status | |
3770 = gfc_build_library_function_decl_with_spec ( | |
3771 get_identifier (PREFIX("caf_image_status")), "RR", | |
3772 integer_type_node, 2, integer_type_node, ppvoid_type_node); | |
3773 | |
3774 gfor_fndecl_caf_stopped_images | |
3775 = gfc_build_library_function_decl_with_spec ( | |
3776 get_identifier (PREFIX("caf_stopped_images")), "WRR", | |
3777 void_type_node, 3, pvoid_type_node, ppvoid_type_node, | |
3778 integer_type_node); | |
3779 | |
3780 gfor_fndecl_co_broadcast = gfc_build_library_function_decl_with_spec ( | |
3781 get_identifier (PREFIX("caf_co_broadcast")), "W.WW", | |
3782 void_type_node, 5, pvoid_type_node, integer_type_node, | |
3783 pint_type, pchar_type_node, integer_type_node); | |
3784 | |
3785 gfor_fndecl_co_max = gfc_build_library_function_decl_with_spec ( | |
3786 get_identifier (PREFIX("caf_co_max")), "W.WW", | |
3787 void_type_node, 6, pvoid_type_node, integer_type_node, | |
3788 pint_type, pchar_type_node, integer_type_node, integer_type_node); | |
3789 | |
3790 gfor_fndecl_co_min = gfc_build_library_function_decl_with_spec ( | |
3791 get_identifier (PREFIX("caf_co_min")), "W.WW", | |
3792 void_type_node, 6, pvoid_type_node, integer_type_node, | |
3793 pint_type, pchar_type_node, integer_type_node, integer_type_node); | |
3794 | |
3795 gfor_fndecl_co_reduce = gfc_build_library_function_decl_with_spec ( | |
3796 get_identifier (PREFIX("caf_co_reduce")), "W.R.WW", | |
3797 void_type_node, 8, pvoid_type_node, | |
3798 build_pointer_type (build_varargs_function_type_list (void_type_node, | |
3799 NULL_TREE)), | |
3800 integer_type_node, integer_type_node, pint_type, pchar_type_node, | |
3801 integer_type_node, integer_type_node); | |
3802 | |
3803 gfor_fndecl_co_sum = gfc_build_library_function_decl_with_spec ( | |
3804 get_identifier (PREFIX("caf_co_sum")), "W.WW", | |
3805 void_type_node, 5, pvoid_type_node, integer_type_node, | |
3806 pint_type, pchar_type_node, integer_type_node); | |
3807 | |
3808 gfor_fndecl_caf_is_present = gfc_build_library_function_decl_with_spec ( | |
3809 get_identifier (PREFIX("caf_is_present")), "RRR", | |
3810 integer_type_node, 3, pvoid_type_node, integer_type_node, | |
3811 pvoid_type_node); | |
3812 } | |
3813 | |
3814 gfc_build_intrinsic_function_decls (); | |
3815 gfc_build_intrinsic_lib_fndecls (); | |
3816 gfc_build_io_library_fndecls (); | |
3817 } | |
3818 | |
3819 | |
3820 /* Evaluate the length of dummy character variables. */ | |
3821 | |
3822 static void | |
3823 gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, | |
3824 gfc_wrapped_block *block) | |
3825 { | |
3826 stmtblock_t init; | |
3827 | |
3828 gfc_finish_decl (cl->backend_decl); | |
3829 | |
3830 gfc_start_block (&init); | |
3831 | |
3832 /* Evaluate the string length expression. */ | |
3833 gfc_conv_string_length (cl, NULL, &init); | |
3834 | |
3835 gfc_trans_vla_type_sizes (sym, &init); | |
3836 | |
3837 gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); | |
3838 } | |
3839 | |
3840 | |
3841 /* Allocate and cleanup an automatic character variable. */ | |
3842 | |
3843 static void | |
3844 gfc_trans_auto_character_variable (gfc_symbol * sym, gfc_wrapped_block * block) | |
3845 { | |
3846 stmtblock_t init; | |
3847 tree decl; | |
3848 tree tmp; | |
3849 | |
3850 gcc_assert (sym->backend_decl); | |
3851 gcc_assert (sym->ts.u.cl && sym->ts.u.cl->length); | |
3852 | |
3853 gfc_init_block (&init); | |
3854 | |
3855 /* Evaluate the string length expression. */ | |
3856 gfc_conv_string_length (sym->ts.u.cl, NULL, &init); | |
3857 | |
3858 gfc_trans_vla_type_sizes (sym, &init); | |
3859 | |
3860 decl = sym->backend_decl; | |
3861 | |
3862 /* Emit a DECL_EXPR for this variable, which will cause the | |
3863 gimplifier to allocate storage, and all that good stuff. */ | |
3864 tmp = fold_build1_loc (input_location, DECL_EXPR, TREE_TYPE (decl), decl); | |
3865 gfc_add_expr_to_block (&init, tmp); | |
3866 | |
3867 gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); | |
3868 } | |
3869 | |
3870 /* Set the initial value of ASSIGN statement auxiliary variable explicitly. */ | |
3871 | |
3872 static void | |
3873 gfc_trans_assign_aux_var (gfc_symbol * sym, gfc_wrapped_block * block) | |
3874 { | |
3875 stmtblock_t init; | |
3876 | |
3877 gcc_assert (sym->backend_decl); | |
3878 gfc_start_block (&init); | |
3879 | |
3880 /* Set the initial value to length. See the comments in | |
3881 function gfc_add_assign_aux_vars in this file. */ | |
3882 gfc_add_modify (&init, GFC_DECL_STRING_LEN (sym->backend_decl), | |
3883 build_int_cst (gfc_charlen_type_node, -2)); | |
3884 | |
3885 gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); | |
3886 } | |
3887 | |
3888 static void | |
3889 gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body) | |
3890 { | |
3891 tree t = *tp, var, val; | |
3892 | |
3893 if (t == NULL || t == error_mark_node) | |
3894 return; | |
3895 if (TREE_CONSTANT (t) || DECL_P (t)) | |
3896 return; | |
3897 | |
3898 if (TREE_CODE (t) == SAVE_EXPR) | |
3899 { | |
3900 if (SAVE_EXPR_RESOLVED_P (t)) | |
3901 { | |
3902 *tp = TREE_OPERAND (t, 0); | |
3903 return; | |
3904 } | |
3905 val = TREE_OPERAND (t, 0); | |
3906 } | |
3907 else | |
3908 val = t; | |
3909 | |
3910 var = gfc_create_var_np (TREE_TYPE (t), NULL); | |
3911 gfc_add_decl_to_function (var); | |
3912 gfc_add_modify (body, var, unshare_expr (val)); | |
3913 if (TREE_CODE (t) == SAVE_EXPR) | |
3914 TREE_OPERAND (t, 0) = var; | |
3915 *tp = var; | |
3916 } | |
3917 | |
3918 static void | |
3919 gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body) | |
3920 { | |
3921 tree t; | |
3922 | |
3923 if (type == NULL || type == error_mark_node) | |
3924 return; | |
3925 | |
3926 type = TYPE_MAIN_VARIANT (type); | |
3927 | |
3928 if (TREE_CODE (type) == INTEGER_TYPE) | |
3929 { | |
3930 gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body); | |
3931 gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body); | |
3932 | |
3933 for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3934 { | |
3935 TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type); | |
3936 TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type); | |
3937 } | |
3938 } | |
3939 else if (TREE_CODE (type) == ARRAY_TYPE) | |
3940 { | |
3941 gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body); | |
3942 gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body); | |
3943 gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body); | |
3944 gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body); | |
3945 | |
3946 for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3947 { | |
3948 TYPE_SIZE (t) = TYPE_SIZE (type); | |
3949 TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type); | |
3950 } | |
3951 } | |
3952 } | |
3953 | |
3954 /* Make sure all type sizes and array domains are either constant, | |
3955 or variable or parameter decls. This is a simplified variant | |
3956 of gimplify_type_sizes, but we can't use it here, as none of the | |
3957 variables in the expressions have been gimplified yet. | |
3958 As type sizes and domains for various variable length arrays | |
3959 contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars | |
3960 time, without this routine gimplify_type_sizes in the middle-end | |
3961 could result in the type sizes being gimplified earlier than where | |
3962 those variables are initialized. */ | |
3963 | |
3964 void | |
3965 gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body) | |
3966 { | |
3967 tree type = TREE_TYPE (sym->backend_decl); | |
3968 | |
3969 if (TREE_CODE (type) == FUNCTION_TYPE | |
3970 && (sym->attr.function || sym->attr.result || sym->attr.entry)) | |
3971 { | |
3972 if (! current_fake_result_decl) | |
3973 return; | |
3974 | |
3975 type = TREE_TYPE (TREE_VALUE (current_fake_result_decl)); | |
3976 } | |
3977 | |
3978 while (POINTER_TYPE_P (type)) | |
3979 type = TREE_TYPE (type); | |
3980 | |
3981 if (GFC_DESCRIPTOR_TYPE_P (type)) | |
3982 { | |
3983 tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type); | |
3984 | |
3985 while (POINTER_TYPE_P (etype)) | |
3986 etype = TREE_TYPE (etype); | |
3987 | |
3988 gfc_trans_vla_type_sizes_1 (etype, body); | |
3989 } | |
3990 | |
3991 gfc_trans_vla_type_sizes_1 (type, body); | |
3992 } | |
3993 | |
3994 | |
3995 /* Initialize a derived type by building an lvalue from the symbol | |
3996 and using trans_assignment to do the work. Set dealloc to false | |
3997 if no deallocation prior the assignment is needed. */ | |
3998 void | |
3999 gfc_init_default_dt (gfc_symbol * sym, stmtblock_t * block, bool dealloc) | |
4000 { | |
4001 gfc_expr *e; | |
4002 tree tmp; | |
4003 tree present; | |
4004 | |
4005 gcc_assert (block); | |
4006 | |
4007 gcc_assert (!sym->attr.allocatable); | |
4008 gfc_set_sym_referenced (sym); | |
4009 e = gfc_lval_expr_from_sym (sym); | |
4010 tmp = gfc_trans_assignment (e, sym->value, false, dealloc); | |
4011 if (sym->attr.dummy && (sym->attr.optional | |
4012 || sym->ns->proc_name->attr.entry_master)) | |
4013 { | |
4014 present = gfc_conv_expr_present (sym); | |
4015 tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), present, | |
4016 tmp, build_empty_stmt (input_location)); | |
4017 } | |
4018 gfc_add_expr_to_block (block, tmp); | |
4019 gfc_free_expr (e); | |
4020 } | |
4021 | |
4022 | |
4023 /* Initialize INTENT(OUT) derived type dummies. As well as giving | |
4024 them their default initializer, if they do not have allocatable | |
4025 components, they have their allocatable components deallocated. */ | |
4026 | |
4027 static void | |
4028 init_intent_out_dt (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
4029 { | |
4030 stmtblock_t init; | |
4031 gfc_formal_arglist *f; | |
4032 tree tmp; | |
4033 tree present; | |
4034 | |
4035 gfc_init_block (&init); | |
4036 for (f = gfc_sym_get_dummy_args (proc_sym); f; f = f->next) | |
4037 if (f->sym && f->sym->attr.intent == INTENT_OUT | |
4038 && !f->sym->attr.pointer | |
4039 && f->sym->ts.type == BT_DERIVED) | |
4040 { | |
4041 tmp = NULL_TREE; | |
4042 | |
4043 /* Note: Allocatables are excluded as they are already handled | |
4044 by the caller. */ | |
4045 if (!f->sym->attr.allocatable | |
4046 && gfc_is_finalizable (f->sym->ts.u.derived, NULL)) | |
4047 { | |
4048 stmtblock_t block; | |
4049 gfc_expr *e; | |
4050 | |
4051 gfc_init_block (&block); | |
4052 f->sym->attr.referenced = 1; | |
4053 e = gfc_lval_expr_from_sym (f->sym); | |
4054 gfc_add_finalizer_call (&block, e); | |
4055 gfc_free_expr (e); | |
4056 tmp = gfc_finish_block (&block); | |
4057 } | |
4058 | |
4059 if (tmp == NULL_TREE && !f->sym->attr.allocatable | |
4060 && f->sym->ts.u.derived->attr.alloc_comp && !f->sym->value) | |
4061 tmp = gfc_deallocate_alloc_comp (f->sym->ts.u.derived, | |
4062 f->sym->backend_decl, | |
4063 f->sym->as ? f->sym->as->rank : 0); | |
4064 | |
4065 if (tmp != NULL_TREE && (f->sym->attr.optional | |
4066 || f->sym->ns->proc_name->attr.entry_master)) | |
4067 { | |
4068 present = gfc_conv_expr_present (f->sym); | |
4069 tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), | |
4070 present, tmp, build_empty_stmt (input_location)); | |
4071 } | |
4072 | |
4073 if (tmp != NULL_TREE) | |
4074 gfc_add_expr_to_block (&init, tmp); | |
4075 else if (f->sym->value && !f->sym->attr.allocatable) | |
4076 gfc_init_default_dt (f->sym, &init, true); | |
4077 } | |
4078 else if (f->sym && f->sym->attr.intent == INTENT_OUT | |
4079 && f->sym->ts.type == BT_CLASS | |
4080 && !CLASS_DATA (f->sym)->attr.class_pointer | |
4081 && !CLASS_DATA (f->sym)->attr.allocatable) | |
4082 { | |
4083 stmtblock_t block; | |
4084 gfc_expr *e; | |
4085 | |
4086 gfc_init_block (&block); | |
4087 f->sym->attr.referenced = 1; | |
4088 e = gfc_lval_expr_from_sym (f->sym); | |
4089 gfc_add_finalizer_call (&block, e); | |
4090 gfc_free_expr (e); | |
4091 tmp = gfc_finish_block (&block); | |
4092 | |
4093 if (f->sym->attr.optional || f->sym->ns->proc_name->attr.entry_master) | |
4094 { | |
4095 present = gfc_conv_expr_present (f->sym); | |
4096 tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), | |
4097 present, tmp, | |
4098 build_empty_stmt (input_location)); | |
4099 } | |
4100 | |
4101 gfc_add_expr_to_block (&init, tmp); | |
4102 } | |
4103 | |
4104 gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); | |
4105 } | |
4106 | |
4107 | |
4108 /* Helper function to manage deferred string lengths. */ | |
4109 | |
4110 static tree | |
4111 gfc_null_and_pass_deferred_len (gfc_symbol *sym, stmtblock_t *init, | |
4112 locus *loc) | |
4113 { | |
4114 tree tmp; | |
4115 | |
4116 /* Character length passed by reference. */ | |
4117 tmp = sym->ts.u.cl->passed_length; | |
4118 tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
4119 tmp = fold_convert (gfc_charlen_type_node, tmp); | |
4120 | |
4121 if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
4122 /* Zero the string length when entering the scope. */ | |
4123 gfc_add_modify (init, sym->ts.u.cl->backend_decl, | |
4124 build_int_cst (gfc_charlen_type_node, 0)); | |
4125 else | |
4126 { | |
4127 tree tmp2; | |
4128 | |
4129 tmp2 = fold_build2_loc (input_location, MODIFY_EXPR, | |
4130 gfc_charlen_type_node, | |
4131 sym->ts.u.cl->backend_decl, tmp); | |
4132 if (sym->attr.optional) | |
4133 { | |
4134 tree present = gfc_conv_expr_present (sym); | |
4135 tmp2 = build3_loc (input_location, COND_EXPR, | |
4136 void_type_node, present, tmp2, | |
4137 build_empty_stmt (input_location)); | |
4138 } | |
4139 gfc_add_expr_to_block (init, tmp2); | |
4140 } | |
4141 | |
4142 gfc_restore_backend_locus (loc); | |
4143 | |
4144 /* Pass the final character length back. */ | |
4145 if (sym->attr.intent != INTENT_IN) | |
4146 { | |
4147 tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
4148 gfc_charlen_type_node, tmp, | |
4149 sym->ts.u.cl->backend_decl); | |
4150 if (sym->attr.optional) | |
4151 { | |
4152 tree present = gfc_conv_expr_present (sym); | |
4153 tmp = build3_loc (input_location, COND_EXPR, | |
4154 void_type_node, present, tmp, | |
4155 build_empty_stmt (input_location)); | |
4156 } | |
4157 } | |
4158 else | |
4159 tmp = NULL_TREE; | |
4160 | |
4161 return tmp; | |
4162 } | |
4163 | |
4164 /* Generate function entry and exit code, and add it to the function body. | |
4165 This includes: | |
4166 Allocation and initialization of array variables. | |
4167 Allocation of character string variables. | |
4168 Initialization and possibly repacking of dummy arrays. | |
4169 Initialization of ASSIGN statement auxiliary variable. | |
4170 Initialization of ASSOCIATE names. | |
4171 Automatic deallocation. */ | |
4172 | |
4173 void | |
4174 gfc_trans_deferred_vars (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
4175 { | |
4176 locus loc; | |
4177 gfc_symbol *sym; | |
4178 gfc_formal_arglist *f; | |
4179 stmtblock_t tmpblock; | |
4180 bool seen_trans_deferred_array = false; | |
4181 bool is_pdt_type = false; | |
4182 tree tmp = NULL; | |
4183 gfc_expr *e; | |
4184 gfc_se se; | |
4185 stmtblock_t init; | |
4186 | |
4187 /* Deal with implicit return variables. Explicit return variables will | |
4188 already have been added. */ | |
4189 if (gfc_return_by_reference (proc_sym) && proc_sym->result == proc_sym) | |
4190 { | |
4191 if (!current_fake_result_decl) | |
4192 { | |
4193 gfc_entry_list *el = NULL; | |
4194 if (proc_sym->attr.entry_master) | |
4195 { | |
4196 for (el = proc_sym->ns->entries; el; el = el->next) | |
4197 if (el->sym != el->sym->result) | |
4198 break; | |
4199 } | |
4200 /* TODO: move to the appropriate place in resolve.c. */ | |
4201 if (warn_return_type && el == NULL) | |
4202 gfc_warning (OPT_Wreturn_type, | |
4203 "Return value of function %qs at %L not set", | |
4204 proc_sym->name, &proc_sym->declared_at); | |
4205 } | |
4206 else if (proc_sym->as) | |
4207 { | |
4208 tree result = TREE_VALUE (current_fake_result_decl); | |
4209 gfc_save_backend_locus (&loc); | |
4210 gfc_set_backend_locus (&proc_sym->declared_at); | |
4211 gfc_trans_dummy_array_bias (proc_sym, result, block); | |
4212 | |
4213 /* An automatic character length, pointer array result. */ | |
4214 if (proc_sym->ts.type == BT_CHARACTER | |
4215 && VAR_P (proc_sym->ts.u.cl->backend_decl)) | |
4216 { | |
4217 tmp = NULL; | |
4218 if (proc_sym->ts.deferred) | |
4219 { | |
4220 gfc_start_block (&init); | |
4221 tmp = gfc_null_and_pass_deferred_len (proc_sym, &init, &loc); | |
4222 gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
4223 } | |
4224 else | |
4225 gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); | |
4226 } | |
4227 } | |
4228 else if (proc_sym->ts.type == BT_CHARACTER) | |
4229 { | |
4230 if (proc_sym->ts.deferred) | |
4231 { | |
4232 tmp = NULL; | |
4233 gfc_save_backend_locus (&loc); | |
4234 gfc_set_backend_locus (&proc_sym->declared_at); | |
4235 gfc_start_block (&init); | |
4236 /* Zero the string length on entry. */ | |
4237 gfc_add_modify (&init, proc_sym->ts.u.cl->backend_decl, | |
4238 build_int_cst (gfc_charlen_type_node, 0)); | |
4239 /* Null the pointer. */ | |
4240 e = gfc_lval_expr_from_sym (proc_sym); | |
4241 gfc_init_se (&se, NULL); | |
4242 se.want_pointer = 1; | |
4243 gfc_conv_expr (&se, e); | |
4244 gfc_free_expr (e); | |
4245 tmp = se.expr; | |
4246 gfc_add_modify (&init, tmp, | |
4247 fold_convert (TREE_TYPE (se.expr), | |
4248 null_pointer_node)); | |
4249 gfc_restore_backend_locus (&loc); | |
4250 | |
4251 /* Pass back the string length on exit. */ | |
4252 tmp = proc_sym->ts.u.cl->backend_decl; | |
4253 if (TREE_CODE (tmp) != INDIRECT_REF | |
4254 && proc_sym->ts.u.cl->passed_length) | |
4255 { | |
4256 tmp = proc_sym->ts.u.cl->passed_length; | |
4257 tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
4258 tmp = fold_convert (gfc_charlen_type_node, tmp); | |
4259 tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
4260 gfc_charlen_type_node, tmp, | |
4261 proc_sym->ts.u.cl->backend_decl); | |
4262 } | |
4263 else | |
4264 tmp = NULL_TREE; | |
4265 | |
4266 gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
4267 } | |
4268 else if (VAR_P (proc_sym->ts.u.cl->backend_decl)) | |
4269 gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); | |
4270 } | |
4271 else | |
4272 gcc_assert (flag_f2c && proc_sym->ts.type == BT_COMPLEX); | |
4273 } | |
4274 | |
4275 /* Initialize the INTENT(OUT) derived type dummy arguments. This | |
4276 should be done here so that the offsets and lbounds of arrays | |
4277 are available. */ | |
4278 gfc_save_backend_locus (&loc); | |
4279 gfc_set_backend_locus (&proc_sym->declared_at); | |
4280 init_intent_out_dt (proc_sym, block); | |
4281 gfc_restore_backend_locus (&loc); | |
4282 | |
4283 for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink) | |
4284 { | |
4285 bool alloc_comp_or_fini = (sym->ts.type == BT_DERIVED) | |
4286 && (sym->ts.u.derived->attr.alloc_comp | |
4287 || gfc_is_finalizable (sym->ts.u.derived, | |
4288 NULL)); | |
4289 if (sym->assoc) | |
4290 continue; | |
4291 | |
4292 if (sym->ts.type == BT_DERIVED | |
4293 && sym->ts.u.derived | |
4294 && sym->ts.u.derived->attr.pdt_type) | |
4295 { | |
4296 is_pdt_type = true; | |
4297 gfc_init_block (&tmpblock); | |
4298 if (!(sym->attr.dummy | |
4299 || sym->attr.pointer | |
4300 || sym->attr.allocatable)) | |
4301 { | |
4302 tmp = gfc_allocate_pdt_comp (sym->ts.u.derived, | |
4303 sym->backend_decl, | |
4304 sym->as ? sym->as->rank : 0, | |
4305 sym->param_list); | |
4306 gfc_add_expr_to_block (&tmpblock, tmp); | |
4307 tmp = gfc_deallocate_pdt_comp (sym->ts.u.derived, | |
4308 sym->backend_decl, | |
4309 sym->as ? sym->as->rank : 0); | |
4310 gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), tmp); | |
4311 } | |
4312 else if (sym->attr.dummy) | |
4313 { | |
4314 tmp = gfc_check_pdt_dummy (sym->ts.u.derived, | |
4315 sym->backend_decl, | |
4316 sym->as ? sym->as->rank : 0, | |
4317 sym->param_list); | |
4318 gfc_add_expr_to_block (&tmpblock, tmp); | |
4319 gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), NULL); | |
4320 } | |
4321 } | |
4322 else if (sym->ts.type == BT_CLASS | |
4323 && CLASS_DATA (sym)->ts.u.derived | |
4324 && CLASS_DATA (sym)->ts.u.derived->attr.pdt_type) | |
4325 { | |
4326 gfc_component *data = CLASS_DATA (sym); | |
4327 is_pdt_type = true; | |
4328 gfc_init_block (&tmpblock); | |
4329 if (!(sym->attr.dummy | |
4330 || CLASS_DATA (sym)->attr.pointer | |
4331 || CLASS_DATA (sym)->attr.allocatable)) | |
4332 { | |
4333 tmp = gfc_class_data_get (sym->backend_decl); | |
4334 tmp = gfc_allocate_pdt_comp (data->ts.u.derived, tmp, | |
4335 data->as ? data->as->rank : 0, | |
4336 sym->param_list); | |
4337 gfc_add_expr_to_block (&tmpblock, tmp); | |
4338 tmp = gfc_class_data_get (sym->backend_decl); | |
4339 tmp = gfc_deallocate_pdt_comp (data->ts.u.derived, tmp, | |
4340 data->as ? data->as->rank : 0); | |
4341 gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), tmp); | |
4342 } | |
4343 else if (sym->attr.dummy) | |
4344 { | |
4345 tmp = gfc_class_data_get (sym->backend_decl); | |
4346 tmp = gfc_check_pdt_dummy (data->ts.u.derived, tmp, | |
4347 data->as ? data->as->rank : 0, | |
4348 sym->param_list); | |
4349 gfc_add_expr_to_block (&tmpblock, tmp); | |
4350 gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), NULL); | |
4351 } | |
4352 } | |
4353 | |
4354 if (sym->attr.pointer && sym->attr.dimension | |
4355 && sym->attr.save == SAVE_NONE | |
4356 && !sym->attr.use_assoc | |
4357 && !sym->attr.host_assoc | |
4358 && !sym->attr.dummy | |
4359 && GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (sym->backend_decl))) | |
4360 { | |
4361 gfc_init_block (&tmpblock); | |
4362 gfc_conv_descriptor_span_set (&tmpblock, sym->backend_decl, | |
4363 build_int_cst (gfc_array_index_type, 0)); | |
4364 gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
4365 NULL_TREE); | |
4366 } | |
4367 | |
4368 if (sym->ts.type == BT_CLASS | |
4369 && (sym->attr.save || flag_max_stack_var_size == 0) | |
4370 && CLASS_DATA (sym)->attr.allocatable) | |
4371 { | |
4372 tree vptr; | |
4373 | |
4374 if (UNLIMITED_POLY (sym)) | |
4375 vptr = null_pointer_node; | |
4376 else | |
4377 { | |
4378 gfc_symbol *vsym; | |
4379 vsym = gfc_find_derived_vtab (sym->ts.u.derived); | |
4380 vptr = gfc_get_symbol_decl (vsym); | |
4381 vptr = gfc_build_addr_expr (NULL, vptr); | |
4382 } | |
4383 | |
4384 if (CLASS_DATA (sym)->attr.dimension | |
4385 || (CLASS_DATA (sym)->attr.codimension | |
4386 && flag_coarray != GFC_FCOARRAY_LIB)) | |
4387 { | |
4388 tmp = gfc_class_data_get (sym->backend_decl); | |
4389 tmp = gfc_build_null_descriptor (TREE_TYPE (tmp)); | |
4390 } | |
4391 else | |
4392 tmp = null_pointer_node; | |
4393 | |
4394 DECL_INITIAL (sym->backend_decl) | |
4395 = gfc_class_set_static_fields (sym->backend_decl, vptr, tmp); | |
4396 TREE_CONSTANT (DECL_INITIAL (sym->backend_decl)) = 1; | |
4397 } | |
4398 else if ((sym->attr.dimension || sym->attr.codimension | |
4399 || (IS_CLASS_ARRAY (sym) && !CLASS_DATA (sym)->attr.allocatable))) | |
4400 { | |
4401 bool is_classarray = IS_CLASS_ARRAY (sym); | |
4402 symbol_attribute *array_attr; | |
4403 gfc_array_spec *as; | |
4404 array_type type_of_array; | |
4405 | |
4406 array_attr = is_classarray ? &CLASS_DATA (sym)->attr : &sym->attr; | |
4407 as = is_classarray ? CLASS_DATA (sym)->as : sym->as; | |
4408 /* Assumed-size Cray pointees need to be treated as AS_EXPLICIT. */ | |
4409 type_of_array = as->type; | |
4410 if (type_of_array == AS_ASSUMED_SIZE && as->cp_was_assumed) | |
4411 type_of_array = AS_EXPLICIT; | |
4412 switch (type_of_array) | |
4413 { | |
4414 case AS_EXPLICIT: | |
4415 if (sym->attr.dummy || sym->attr.result) | |
4416 gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); | |
4417 /* Allocatable and pointer arrays need to processed | |
4418 explicitly. */ | |
4419 else if ((sym->ts.type != BT_CLASS && sym->attr.pointer) | |
4420 || (sym->ts.type == BT_CLASS | |
4421 && CLASS_DATA (sym)->attr.class_pointer) | |
4422 || array_attr->allocatable) | |
4423 { | |
4424 if (TREE_STATIC (sym->backend_decl)) | |
4425 { | |
4426 gfc_save_backend_locus (&loc); | |
4427 gfc_set_backend_locus (&sym->declared_at); | |
4428 gfc_trans_static_array_pointer (sym); | |
4429 gfc_restore_backend_locus (&loc); | |
4430 } | |
4431 else | |
4432 { | |
4433 seen_trans_deferred_array = true; | |
4434 gfc_trans_deferred_array (sym, block); | |
4435 } | |
4436 } | |
4437 else if (sym->attr.codimension | |
4438 && TREE_STATIC (sym->backend_decl)) | |
4439 { | |
4440 gfc_init_block (&tmpblock); | |
4441 gfc_trans_array_cobounds (TREE_TYPE (sym->backend_decl), | |
4442 &tmpblock, sym); | |
4443 gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
4444 NULL_TREE); | |
4445 continue; | |
4446 } | |
4447 else | |
4448 { | |
4449 gfc_save_backend_locus (&loc); | |
4450 gfc_set_backend_locus (&sym->declared_at); | |
4451 | |
4452 if (alloc_comp_or_fini) | |
4453 { | |
4454 seen_trans_deferred_array = true; | |
4455 gfc_trans_deferred_array (sym, block); | |
4456 } | |
4457 else if (sym->ts.type == BT_DERIVED | |
4458 && sym->value | |
4459 && !sym->attr.data | |
4460 && sym->attr.save == SAVE_NONE) | |
4461 { | |
4462 gfc_start_block (&tmpblock); | |
4463 gfc_init_default_dt (sym, &tmpblock, false); | |
4464 gfc_add_init_cleanup (block, | |
4465 gfc_finish_block (&tmpblock), | |
4466 NULL_TREE); | |
4467 } | |
4468 | |
4469 gfc_trans_auto_array_allocation (sym->backend_decl, | |
4470 sym, block); | |
4471 gfc_restore_backend_locus (&loc); | |
4472 } | |
4473 break; | |
4474 | |
4475 case AS_ASSUMED_SIZE: | |
4476 /* Must be a dummy parameter. */ | |
4477 gcc_assert (sym->attr.dummy || as->cp_was_assumed); | |
4478 | |
4479 /* We should always pass assumed size arrays the g77 way. */ | |
4480 if (sym->attr.dummy) | |
4481 gfc_trans_g77_array (sym, block); | |
4482 break; | |
4483 | |
4484 case AS_ASSUMED_SHAPE: | |
4485 /* Must be a dummy parameter. */ | |
4486 gcc_assert (sym->attr.dummy); | |
4487 | |
4488 gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); | |
4489 break; | |
4490 | |
4491 case AS_ASSUMED_RANK: | |
4492 case AS_DEFERRED: | |
4493 seen_trans_deferred_array = true; | |
4494 gfc_trans_deferred_array (sym, block); | |
4495 if (sym->ts.type == BT_CHARACTER && sym->ts.deferred | |
4496 && sym->attr.result) | |
4497 { | |
4498 gfc_start_block (&init); | |
4499 gfc_save_backend_locus (&loc); | |
4500 gfc_set_backend_locus (&sym->declared_at); | |
4501 tmp = gfc_null_and_pass_deferred_len (sym, &init, &loc); | |
4502 gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
4503 } | |
4504 break; | |
4505 | |
4506 default: | |
4507 gcc_unreachable (); | |
4508 } | |
4509 if (alloc_comp_or_fini && !seen_trans_deferred_array) | |
4510 gfc_trans_deferred_array (sym, block); | |
4511 } | |
4512 else if ((!sym->attr.dummy || sym->ts.deferred) | |
4513 && (sym->ts.type == BT_CLASS | |
4514 && CLASS_DATA (sym)->attr.class_pointer)) | |
4515 continue; | |
4516 else if ((!sym->attr.dummy || sym->ts.deferred) | |
4517 && (sym->attr.allocatable | |
4518 || (sym->attr.pointer && sym->attr.result) | |
4519 || (sym->ts.type == BT_CLASS | |
4520 && CLASS_DATA (sym)->attr.allocatable))) | |
4521 { | |
4522 if (!sym->attr.save && flag_max_stack_var_size != 0) | |
4523 { | |
4524 tree descriptor = NULL_TREE; | |
4525 | |
4526 gfc_save_backend_locus (&loc); | |
4527 gfc_set_backend_locus (&sym->declared_at); | |
4528 gfc_start_block (&init); | |
4529 | |
4530 if (!sym->attr.pointer) | |
4531 { | |
4532 /* Nullify and automatic deallocation of allocatable | |
4533 scalars. */ | |
4534 e = gfc_lval_expr_from_sym (sym); | |
4535 if (sym->ts.type == BT_CLASS) | |
4536 gfc_add_data_component (e); | |
4537 | |
4538 gfc_init_se (&se, NULL); | |
4539 if (sym->ts.type != BT_CLASS | |
4540 || sym->ts.u.derived->attr.dimension | |
4541 || sym->ts.u.derived->attr.codimension) | |
4542 { | |
4543 se.want_pointer = 1; | |
4544 gfc_conv_expr (&se, e); | |
4545 } | |
4546 else if (sym->ts.type == BT_CLASS | |
4547 && !CLASS_DATA (sym)->attr.dimension | |
4548 && !CLASS_DATA (sym)->attr.codimension) | |
4549 { | |
4550 se.want_pointer = 1; | |
4551 gfc_conv_expr (&se, e); | |
4552 } | |
4553 else | |
4554 { | |
4555 se.descriptor_only = 1; | |
4556 gfc_conv_expr (&se, e); | |
4557 descriptor = se.expr; | |
4558 se.expr = gfc_conv_descriptor_data_addr (se.expr); | |
4559 se.expr = build_fold_indirect_ref_loc (input_location, se.expr); | |
4560 } | |
4561 gfc_free_expr (e); | |
4562 | |
4563 if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
4564 { | |
4565 /* Nullify when entering the scope. */ | |
4566 tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
4567 TREE_TYPE (se.expr), se.expr, | |
4568 fold_convert (TREE_TYPE (se.expr), | |
4569 null_pointer_node)); | |
4570 if (sym->attr.optional) | |
4571 { | |
4572 tree present = gfc_conv_expr_present (sym); | |
4573 tmp = build3_loc (input_location, COND_EXPR, | |
4574 void_type_node, present, tmp, | |
4575 build_empty_stmt (input_location)); | |
4576 } | |
4577 gfc_add_expr_to_block (&init, tmp); | |
4578 } | |
4579 } | |
4580 | |
4581 if ((sym->attr.dummy || sym->attr.result) | |
4582 && sym->ts.type == BT_CHARACTER | |
4583 && sym->ts.deferred | |
4584 && sym->ts.u.cl->passed_length) | |
4585 tmp = gfc_null_and_pass_deferred_len (sym, &init, &loc); | |
4586 else | |
4587 gfc_restore_backend_locus (&loc); | |
4588 | |
4589 /* Deallocate when leaving the scope. Nullifying is not | |
4590 needed. */ | |
4591 if (!sym->attr.result && !sym->attr.dummy && !sym->attr.pointer | |
4592 && !sym->ns->proc_name->attr.is_main_program) | |
4593 { | |
4594 if (sym->ts.type == BT_CLASS | |
4595 && CLASS_DATA (sym)->attr.codimension) | |
4596 tmp = gfc_deallocate_with_status (descriptor, NULL_TREE, | |
4597 NULL_TREE, NULL_TREE, | |
4598 NULL_TREE, true, NULL, | |
4599 GFC_CAF_COARRAY_ANALYZE); | |
4600 else | |
4601 { | |
4602 gfc_expr *expr = gfc_lval_expr_from_sym (sym); | |
4603 tmp = gfc_deallocate_scalar_with_status (se.expr, | |
4604 NULL_TREE, | |
4605 NULL_TREE, | |
4606 true, expr, | |
4607 sym->ts); | |
4608 gfc_free_expr (expr); | |
4609 } | |
4610 } | |
4611 | |
4612 if (sym->ts.type == BT_CLASS) | |
4613 { | |
4614 /* Initialize _vptr to declared type. */ | |
4615 gfc_symbol *vtab; | |
4616 tree rhs; | |
4617 | |
4618 gfc_save_backend_locus (&loc); | |
4619 gfc_set_backend_locus (&sym->declared_at); | |
4620 e = gfc_lval_expr_from_sym (sym); | |
4621 gfc_add_vptr_component (e); | |
4622 gfc_init_se (&se, NULL); | |
4623 se.want_pointer = 1; | |
4624 gfc_conv_expr (&se, e); | |
4625 gfc_free_expr (e); | |
4626 if (UNLIMITED_POLY (sym)) | |
4627 rhs = build_int_cst (TREE_TYPE (se.expr), 0); | |
4628 else | |
4629 { | |
4630 vtab = gfc_find_derived_vtab (sym->ts.u.derived); | |
4631 rhs = gfc_build_addr_expr (TREE_TYPE (se.expr), | |
4632 gfc_get_symbol_decl (vtab)); | |
4633 } | |
4634 gfc_add_modify (&init, se.expr, rhs); | |
4635 gfc_restore_backend_locus (&loc); | |
4636 } | |
4637 | |
4638 gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
4639 /* TODO find out why this is necessary to stop double calls to | |
4640 free. Somebody is reusing the expression in 'tmp' because | |
4641 it is being used unititialized. */ | |
4642 tmp = NULL_TREE; | |
4643 } | |
4644 } | |
4645 else if (sym->ts.type == BT_CHARACTER && sym->ts.deferred) | |
4646 { | |
4647 tree tmp = NULL; | |
4648 stmtblock_t init; | |
4649 | |
4650 /* If we get to here, all that should be left are pointers. */ | |
4651 gcc_assert (sym->attr.pointer); | |
4652 | |
4653 if (sym->attr.dummy) | |
4654 { | |
4655 gfc_start_block (&init); | |
4656 gfc_save_backend_locus (&loc); | |
4657 gfc_set_backend_locus (&sym->declared_at); | |
4658 tmp = gfc_null_and_pass_deferred_len (sym, &init, &loc); | |
4659 gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
4660 } | |
4661 } | |
4662 else if (sym->ts.deferred) | |
4663 gfc_fatal_error ("Deferred type parameter not yet supported"); | |
4664 else if (alloc_comp_or_fini) | |
4665 gfc_trans_deferred_array (sym, block); | |
4666 else if (sym->ts.type == BT_CHARACTER) | |
4667 { | |
4668 gfc_save_backend_locus (&loc); | |
4669 gfc_set_backend_locus (&sym->declared_at); | |
4670 if (sym->attr.dummy || sym->attr.result) | |
4671 gfc_trans_dummy_character (sym, sym->ts.u.cl, block); | |
4672 else | |
4673 gfc_trans_auto_character_variable (sym, block); | |
4674 gfc_restore_backend_locus (&loc); | |
4675 } | |
4676 else if (sym->attr.assign) | |
4677 { | |
4678 gfc_save_backend_locus (&loc); | |
4679 gfc_set_backend_locus (&sym->declared_at); | |
4680 gfc_trans_assign_aux_var (sym, block); | |
4681 gfc_restore_backend_locus (&loc); | |
4682 } | |
4683 else if (sym->ts.type == BT_DERIVED | |
4684 && sym->value | |
4685 && !sym->attr.data | |
4686 && sym->attr.save == SAVE_NONE) | |
4687 { | |
4688 gfc_start_block (&tmpblock); | |
4689 gfc_init_default_dt (sym, &tmpblock, false); | |
4690 gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
4691 NULL_TREE); | |
4692 } | |
4693 else if (!(UNLIMITED_POLY(sym)) && !is_pdt_type) | |
4694 gcc_unreachable (); | |
4695 } | |
4696 | |
4697 gfc_init_block (&tmpblock); | |
4698 | |
4699 for (f = gfc_sym_get_dummy_args (proc_sym); f; f = f->next) | |
4700 { | |
4701 if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER) | |
4702 { | |
4703 gcc_assert (f->sym->ts.u.cl->backend_decl != NULL); | |
4704 if (TREE_CODE (f->sym->ts.u.cl->backend_decl) == PARM_DECL) | |
4705 gfc_trans_vla_type_sizes (f->sym, &tmpblock); | |
4706 } | |
4707 } | |
4708 | |
4709 if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER | |
4710 && current_fake_result_decl != NULL) | |
4711 { | |
4712 gcc_assert (proc_sym->ts.u.cl->backend_decl != NULL); | |
4713 if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == PARM_DECL) | |
4714 gfc_trans_vla_type_sizes (proc_sym, &tmpblock); | |
4715 } | |
4716 | |
4717 gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), NULL_TREE); | |
4718 } | |
4719 | |
4720 | |
4721 struct module_hasher : ggc_ptr_hash<module_htab_entry> | |
4722 { | |
4723 typedef const char *compare_type; | |
4724 | |
4725 static hashval_t hash (module_htab_entry *s) { return htab_hash_string (s); } | |
4726 static bool | |
4727 equal (module_htab_entry *a, const char *b) | |
4728 { | |
4729 return !strcmp (a->name, b); | |
4730 } | |
4731 }; | |
4732 | |
4733 static GTY (()) hash_table<module_hasher> *module_htab; | |
4734 | |
4735 /* Hash and equality functions for module_htab's decls. */ | |
4736 | |
4737 hashval_t | |
4738 module_decl_hasher::hash (tree t) | |
4739 { | |
4740 const_tree n = DECL_NAME (t); | |
4741 if (n == NULL_TREE) | |
4742 n = TYPE_NAME (TREE_TYPE (t)); | |
4743 return htab_hash_string (IDENTIFIER_POINTER (n)); | |
4744 } | |
4745 | |
4746 bool | |
4747 module_decl_hasher::equal (tree t1, const char *x2) | |
4748 { | |
4749 const_tree n1 = DECL_NAME (t1); | |
4750 if (n1 == NULL_TREE) | |
4751 n1 = TYPE_NAME (TREE_TYPE (t1)); | |
4752 return strcmp (IDENTIFIER_POINTER (n1), x2) == 0; | |
4753 } | |
4754 | |
4755 struct module_htab_entry * | |
4756 gfc_find_module (const char *name) | |
4757 { | |
4758 if (! module_htab) | |
4759 module_htab = hash_table<module_hasher>::create_ggc (10); | |
4760 | |
4761 module_htab_entry **slot | |
4762 = module_htab->find_slot_with_hash (name, htab_hash_string (name), INSERT); | |
4763 if (*slot == NULL) | |
4764 { | |
4765 module_htab_entry *entry = ggc_cleared_alloc<module_htab_entry> (); | |
4766 | |
4767 entry->name = gfc_get_string ("%s", name); | |
4768 entry->decls = hash_table<module_decl_hasher>::create_ggc (10); | |
4769 *slot = entry; | |
4770 } | |
4771 return *slot; | |
4772 } | |
4773 | |
4774 void | |
4775 gfc_module_add_decl (struct module_htab_entry *entry, tree decl) | |
4776 { | |
4777 const char *name; | |
4778 | |
4779 if (DECL_NAME (decl)) | |
4780 name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
4781 else | |
4782 { | |
4783 gcc_assert (TREE_CODE (decl) == TYPE_DECL); | |
4784 name = IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))); | |
4785 } | |
4786 tree *slot | |
4787 = entry->decls->find_slot_with_hash (name, htab_hash_string (name), | |
4788 INSERT); | |
4789 if (*slot == NULL) | |
4790 *slot = decl; | |
4791 } | |
4792 | |
4793 | |
4794 /* Generate debugging symbols for namelists. This function must come after | |
4795 generate_local_decl to ensure that the variables in the namelist are | |
4796 already declared. */ | |
4797 | |
4798 static tree | |
4799 generate_namelist_decl (gfc_symbol * sym) | |
4800 { | |
4801 gfc_namelist *nml; | |
4802 tree decl; | |
4803 vec<constructor_elt, va_gc> *nml_decls = NULL; | |
4804 | |
4805 gcc_assert (sym->attr.flavor == FL_NAMELIST); | |
4806 for (nml = sym->namelist; nml; nml = nml->next) | |
4807 { | |
4808 if (nml->sym->backend_decl == NULL_TREE) | |
4809 { | |
4810 nml->sym->attr.referenced = 1; | |
4811 nml->sym->backend_decl = gfc_get_symbol_decl (nml->sym); | |
4812 } | |
4813 DECL_IGNORED_P (nml->sym->backend_decl) = 0; | |
4814 CONSTRUCTOR_APPEND_ELT (nml_decls, NULL_TREE, nml->sym->backend_decl); | |
4815 } | |
4816 | |
4817 decl = make_node (NAMELIST_DECL); | |
4818 TREE_TYPE (decl) = void_type_node; | |
4819 NAMELIST_DECL_ASSOCIATED_DECL (decl) = build_constructor (NULL_TREE, nml_decls); | |
4820 DECL_NAME (decl) = get_identifier (sym->name); | |
4821 return decl; | |
4822 } | |
4823 | |
4824 | |
4825 /* Output an initialized decl for a module variable. */ | |
4826 | |
4827 static void | |
4828 gfc_create_module_variable (gfc_symbol * sym) | |
4829 { | |
4830 tree decl; | |
4831 | |
4832 /* Module functions with alternate entries are dealt with later and | |
4833 would get caught by the next condition. */ | |
4834 if (sym->attr.entry) | |
4835 return; | |
4836 | |
4837 /* Make sure we convert the types of the derived types from iso_c_binding | |
4838 into (void *). */ | |
4839 if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
4840 && sym->ts.type == BT_DERIVED) | |
4841 sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
4842 | |
4843 if (gfc_fl_struct (sym->attr.flavor) | |
4844 && sym->backend_decl | |
4845 && TREE_CODE (sym->backend_decl) == RECORD_TYPE) | |
4846 { | |
4847 decl = sym->backend_decl; | |
4848 gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
4849 | |
4850 if (!sym->attr.use_assoc && !sym->attr.used_in_submodule) | |
4851 { | |
4852 gcc_assert (TYPE_CONTEXT (decl) == NULL_TREE | |
4853 || TYPE_CONTEXT (decl) == sym->ns->proc_name->backend_decl); | |
4854 gcc_assert (DECL_CONTEXT (TYPE_STUB_DECL (decl)) == NULL_TREE | |
4855 || DECL_CONTEXT (TYPE_STUB_DECL (decl)) | |
4856 == sym->ns->proc_name->backend_decl); | |
4857 } | |
4858 TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4859 DECL_CONTEXT (TYPE_STUB_DECL (decl)) = sym->ns->proc_name->backend_decl; | |
4860 gfc_module_add_decl (cur_module, TYPE_STUB_DECL (decl)); | |
4861 } | |
4862 | |
4863 /* Only output variables, procedure pointers and array valued, | |
4864 or derived type, parameters. */ | |
4865 if (sym->attr.flavor != FL_VARIABLE | |
4866 && !(sym->attr.flavor == FL_PARAMETER | |
4867 && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) | |
4868 && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.proc_pointer)) | |
4869 return; | |
4870 | |
4871 if ((sym->attr.in_common || sym->attr.in_equivalence) && sym->backend_decl) | |
4872 { | |
4873 decl = sym->backend_decl; | |
4874 gcc_assert (DECL_FILE_SCOPE_P (decl)); | |
4875 gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
4876 DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4877 gfc_module_add_decl (cur_module, decl); | |
4878 } | |
4879 | |
4880 /* Don't generate variables from other modules. Variables from | |
4881 COMMONs and Cray pointees will already have been generated. */ | |
4882 if (sym->attr.use_assoc || sym->attr.used_in_submodule | |
4883 || sym->attr.in_common || sym->attr.cray_pointee) | |
4884 return; | |
4885 | |
4886 /* Equivalenced variables arrive here after creation. */ | |
4887 if (sym->backend_decl | |
4888 && (sym->equiv_built || sym->attr.in_equivalence)) | |
4889 return; | |
4890 | |
4891 if (sym->backend_decl && !sym->attr.vtab && !sym->attr.target) | |
4892 gfc_internal_error ("backend decl for module variable %qs already exists", | |
4893 sym->name); | |
4894 | |
4895 if (sym->module && !sym->attr.result && !sym->attr.dummy | |
4896 && (sym->attr.access == ACCESS_UNKNOWN | |
4897 && (sym->ns->default_access == ACCESS_PRIVATE | |
4898 || (sym->ns->default_access == ACCESS_UNKNOWN | |
4899 && flag_module_private)))) | |
4900 sym->attr.access = ACCESS_PRIVATE; | |
4901 | |
4902 if (warn_unused_variable && !sym->attr.referenced | |
4903 && sym->attr.access == ACCESS_PRIVATE) | |
4904 gfc_warning (OPT_Wunused_value, | |
4905 "Unused PRIVATE module variable %qs declared at %L", | |
4906 sym->name, &sym->declared_at); | |
4907 | |
4908 /* We always want module variables to be created. */ | |
4909 sym->attr.referenced = 1; | |
4910 /* Create the decl. */ | |
4911 decl = gfc_get_symbol_decl (sym); | |
4912 | |
4913 /* Create the variable. */ | |
4914 pushdecl (decl); | |
4915 gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE | |
4916 || (sym->ns->parent->proc_name->attr.flavor == FL_MODULE | |
4917 && sym->fn_result_spec)); | |
4918 DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4919 rest_of_decl_compilation (decl, 1, 0); | |
4920 gfc_module_add_decl (cur_module, decl); | |
4921 | |
4922 /* Also add length of strings. */ | |
4923 if (sym->ts.type == BT_CHARACTER) | |
4924 { | |
4925 tree length; | |
4926 | |
4927 length = sym->ts.u.cl->backend_decl; | |
4928 gcc_assert (length || sym->attr.proc_pointer); | |
4929 if (length && !INTEGER_CST_P (length)) | |
4930 { | |
4931 pushdecl (length); | |
4932 rest_of_decl_compilation (length, 1, 0); | |
4933 } | |
4934 } | |
4935 | |
4936 if (sym->attr.codimension && !sym->attr.dummy && !sym->attr.allocatable | |
4937 && sym->attr.referenced && !sym->attr.use_assoc) | |
4938 has_coarray_vars = true; | |
4939 } | |
4940 | |
4941 /* Emit debug information for USE statements. */ | |
4942 | |
4943 static void | |
4944 gfc_trans_use_stmts (gfc_namespace * ns) | |
4945 { | |
4946 gfc_use_list *use_stmt; | |
4947 for (use_stmt = ns->use_stmts; use_stmt; use_stmt = use_stmt->next) | |
4948 { | |
4949 struct module_htab_entry *entry | |
4950 = gfc_find_module (use_stmt->module_name); | |
4951 gfc_use_rename *rent; | |
4952 | |
4953 if (entry->namespace_decl == NULL) | |
4954 { | |
4955 entry->namespace_decl | |
4956 = build_decl (input_location, | |
4957 NAMESPACE_DECL, | |
4958 get_identifier (use_stmt->module_name), | |
4959 void_type_node); | |
4960 DECL_EXTERNAL (entry->namespace_decl) = 1; | |
4961 } | |
4962 gfc_set_backend_locus (&use_stmt->where); | |
4963 if (!use_stmt->only_flag) | |
4964 (*debug_hooks->imported_module_or_decl) (entry->namespace_decl, | |
4965 NULL_TREE, | |
4966 ns->proc_name->backend_decl, | |
4967 false, false); | |
4968 for (rent = use_stmt->rename; rent; rent = rent->next) | |
4969 { | |
4970 tree decl, local_name; | |
4971 | |
4972 if (rent->op != INTRINSIC_NONE) | |
4973 continue; | |
4974 | |
4975 hashval_t hash = htab_hash_string (rent->use_name); | |
4976 tree *slot = entry->decls->find_slot_with_hash (rent->use_name, hash, | |
4977 INSERT); | |
4978 if (*slot == NULL) | |
4979 { | |
4980 gfc_symtree *st; | |
4981 | |
4982 st = gfc_find_symtree (ns->sym_root, | |
4983 rent->local_name[0] | |
4984 ? rent->local_name : rent->use_name); | |
4985 | |
4986 /* The following can happen if a derived type is renamed. */ | |
4987 if (!st) | |
4988 { | |
4989 char *name; | |
4990 name = xstrdup (rent->local_name[0] | |
4991 ? rent->local_name : rent->use_name); | |
4992 name[0] = (char) TOUPPER ((unsigned char) name[0]); | |
4993 st = gfc_find_symtree (ns->sym_root, name); | |
4994 free (name); | |
4995 gcc_assert (st); | |
4996 } | |
4997 | |
4998 /* Sometimes, generic interfaces wind up being over-ruled by a | |
4999 local symbol (see PR41062). */ | |
5000 if (!st->n.sym->attr.use_assoc) | |
5001 continue; | |
5002 | |
5003 if (st->n.sym->backend_decl | |
5004 && DECL_P (st->n.sym->backend_decl) | |
5005 && st->n.sym->module | |
5006 && strcmp (st->n.sym->module, use_stmt->module_name) == 0) | |
5007 { | |
5008 gcc_assert (DECL_EXTERNAL (entry->namespace_decl) | |
5009 || !VAR_P (st->n.sym->backend_decl)); | |
5010 decl = copy_node (st->n.sym->backend_decl); | |
5011 DECL_CONTEXT (decl) = entry->namespace_decl; | |
5012 DECL_EXTERNAL (decl) = 1; | |
5013 DECL_IGNORED_P (decl) = 0; | |
5014 DECL_INITIAL (decl) = NULL_TREE; | |
5015 } | |
5016 else if (st->n.sym->attr.flavor == FL_NAMELIST | |
5017 && st->n.sym->attr.use_only | |
5018 && st->n.sym->module | |
5019 && strcmp (st->n.sym->module, use_stmt->module_name) | |
5020 == 0) | |
5021 { | |
5022 decl = generate_namelist_decl (st->n.sym); | |
5023 DECL_CONTEXT (decl) = entry->namespace_decl; | |
5024 DECL_EXTERNAL (decl) = 1; | |
5025 DECL_IGNORED_P (decl) = 0; | |
5026 DECL_INITIAL (decl) = NULL_TREE; | |
5027 } | |
5028 else | |
5029 { | |
5030 *slot = error_mark_node; | |
5031 entry->decls->clear_slot (slot); | |
5032 continue; | |
5033 } | |
5034 *slot = decl; | |
5035 } | |
5036 decl = (tree) *slot; | |
5037 if (rent->local_name[0]) | |
5038 local_name = get_identifier (rent->local_name); | |
5039 else | |
5040 local_name = NULL_TREE; | |
5041 gfc_set_backend_locus (&rent->where); | |
5042 (*debug_hooks->imported_module_or_decl) (decl, local_name, | |
5043 ns->proc_name->backend_decl, | |
5044 !use_stmt->only_flag, | |
5045 false); | |
5046 } | |
5047 } | |
5048 } | |
5049 | |
5050 | |
5051 /* Return true if expr is a constant initializer that gfc_conv_initializer | |
5052 will handle. */ | |
5053 | |
5054 static bool | |
5055 check_constant_initializer (gfc_expr *expr, gfc_typespec *ts, bool array, | |
5056 bool pointer) | |
5057 { | |
5058 gfc_constructor *c; | |
5059 gfc_component *cm; | |
5060 | |
5061 if (pointer) | |
5062 return true; | |
5063 else if (array) | |
5064 { | |
5065 if (expr->expr_type == EXPR_CONSTANT || expr->expr_type == EXPR_NULL) | |
5066 return true; | |
5067 else if (expr->expr_type == EXPR_STRUCTURE) | |
5068 return check_constant_initializer (expr, ts, false, false); | |
5069 else if (expr->expr_type != EXPR_ARRAY) | |
5070 return false; | |
5071 for (c = gfc_constructor_first (expr->value.constructor); | |
5072 c; c = gfc_constructor_next (c)) | |
5073 { | |
5074 if (c->iterator) | |
5075 return false; | |
5076 if (c->expr->expr_type == EXPR_STRUCTURE) | |
5077 { | |
5078 if (!check_constant_initializer (c->expr, ts, false, false)) | |
5079 return false; | |
5080 } | |
5081 else if (c->expr->expr_type != EXPR_CONSTANT) | |
5082 return false; | |
5083 } | |
5084 return true; | |
5085 } | |
5086 else switch (ts->type) | |
5087 { | |
5088 case_bt_struct: | |
5089 if (expr->expr_type != EXPR_STRUCTURE) | |
5090 return false; | |
5091 cm = expr->ts.u.derived->components; | |
5092 for (c = gfc_constructor_first (expr->value.constructor); | |
5093 c; c = gfc_constructor_next (c), cm = cm->next) | |
5094 { | |
5095 if (!c->expr || cm->attr.allocatable) | |
5096 continue; | |
5097 if (!check_constant_initializer (c->expr, &cm->ts, | |
5098 cm->attr.dimension, | |
5099 cm->attr.pointer)) | |
5100 return false; | |
5101 } | |
5102 return true; | |
5103 default: | |
5104 return expr->expr_type == EXPR_CONSTANT; | |
5105 } | |
5106 } | |
5107 | |
5108 /* Emit debug info for parameters and unreferenced variables with | |
5109 initializers. */ | |
5110 | |
5111 static void | |
5112 gfc_emit_parameter_debug_info (gfc_symbol *sym) | |
5113 { | |
5114 tree decl; | |
5115 | |
5116 if (sym->attr.flavor != FL_PARAMETER | |
5117 && (sym->attr.flavor != FL_VARIABLE || sym->attr.referenced)) | |
5118 return; | |
5119 | |
5120 if (sym->backend_decl != NULL | |
5121 || sym->value == NULL | |
5122 || sym->attr.use_assoc | |
5123 || sym->attr.dummy | |
5124 || sym->attr.result | |
5125 || sym->attr.function | |
5126 || sym->attr.intrinsic | |
5127 || sym->attr.pointer | |
5128 || sym->attr.allocatable | |
5129 || sym->attr.cray_pointee | |
5130 || sym->attr.threadprivate | |
5131 || sym->attr.is_bind_c | |
5132 || sym->attr.subref_array_pointer | |
5133 || sym->attr.assign) | |
5134 return; | |
5135 | |
5136 if (sym->ts.type == BT_CHARACTER) | |
5137 { | |
5138 gfc_conv_const_charlen (sym->ts.u.cl); | |
5139 if (sym->ts.u.cl->backend_decl == NULL | |
5140 || TREE_CODE (sym->ts.u.cl->backend_decl) != INTEGER_CST) | |
5141 return; | |
5142 } | |
5143 else if (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) | |
5144 return; | |
5145 | |
5146 if (sym->as) | |
5147 { | |
5148 int n; | |
5149 | |
5150 if (sym->as->type != AS_EXPLICIT) | |
5151 return; | |
5152 for (n = 0; n < sym->as->rank; n++) | |
5153 if (sym->as->lower[n]->expr_type != EXPR_CONSTANT | |
5154 || sym->as->upper[n] == NULL | |
5155 || sym->as->upper[n]->expr_type != EXPR_CONSTANT) | |
5156 return; | |
5157 } | |
5158 | |
5159 if (!check_constant_initializer (sym->value, &sym->ts, | |
5160 sym->attr.dimension, false)) | |
5161 return; | |
5162 | |
5163 if (flag_coarray == GFC_FCOARRAY_LIB && sym->attr.codimension) | |
5164 return; | |
5165 | |
5166 /* Create the decl for the variable or constant. */ | |
5167 decl = build_decl (input_location, | |
5168 sym->attr.flavor == FL_PARAMETER ? CONST_DECL : VAR_DECL, | |
5169 gfc_sym_identifier (sym), gfc_sym_type (sym)); | |
5170 if (sym->attr.flavor == FL_PARAMETER) | |
5171 TREE_READONLY (decl) = 1; | |
5172 gfc_set_decl_location (decl, &sym->declared_at); | |
5173 if (sym->attr.dimension) | |
5174 GFC_DECL_PACKED_ARRAY (decl) = 1; | |
5175 DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
5176 TREE_STATIC (decl) = 1; | |
5177 TREE_USED (decl) = 1; | |
5178 if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
5179 TREE_PUBLIC (decl) = 1; | |
5180 DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
5181 TREE_TYPE (decl), | |
5182 sym->attr.dimension, | |
5183 false, false); | |
5184 debug_hooks->early_global_decl (decl); | |
5185 } | |
5186 | |
5187 | |
5188 static void | |
5189 generate_coarray_sym_init (gfc_symbol *sym) | |
5190 { | |
5191 tree tmp, size, decl, token, desc; | |
5192 bool is_lock_type, is_event_type; | |
5193 int reg_type; | |
5194 gfc_se se; | |
5195 symbol_attribute attr; | |
5196 | |
5197 if (sym->attr.dummy || sym->attr.allocatable || !sym->attr.codimension | |
5198 || sym->attr.use_assoc || !sym->attr.referenced | |
5199 || sym->attr.select_type_temporary) | |
5200 return; | |
5201 | |
5202 decl = sym->backend_decl; | |
5203 TREE_USED(decl) = 1; | |
5204 gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (decl))); | |
5205 | |
5206 is_lock_type = sym->ts.type == BT_DERIVED | |
5207 && sym->ts.u.derived->from_intmod == INTMOD_ISO_FORTRAN_ENV | |
5208 && sym->ts.u.derived->intmod_sym_id == ISOFORTRAN_LOCK_TYPE; | |
5209 | |
5210 is_event_type = sym->ts.type == BT_DERIVED | |
5211 && sym->ts.u.derived->from_intmod == INTMOD_ISO_FORTRAN_ENV | |
5212 && sym->ts.u.derived->intmod_sym_id == ISOFORTRAN_EVENT_TYPE; | |
5213 | |
5214 /* FIXME: Workaround for PR middle-end/49106, cf. also PR middle-end/49108 | |
5215 to make sure the variable is not optimized away. */ | |
5216 DECL_PRESERVE_P (DECL_CONTEXT (decl)) = 1; | |
5217 | |
5218 /* For lock types, we pass the array size as only the library knows the | |
5219 size of the variable. */ | |
5220 if (is_lock_type || is_event_type) | |
5221 size = gfc_index_one_node; | |
5222 else | |
5223 size = TYPE_SIZE_UNIT (gfc_get_element_type (TREE_TYPE (decl))); | |
5224 | |
5225 /* Ensure that we do not have size=0 for zero-sized arrays. */ | |
5226 size = fold_build2_loc (input_location, MAX_EXPR, size_type_node, | |
5227 fold_convert (size_type_node, size), | |
5228 build_int_cst (size_type_node, 1)); | |
5229 | |
5230 if (GFC_TYPE_ARRAY_RANK (TREE_TYPE (decl))) | |
5231 { | |
5232 tmp = GFC_TYPE_ARRAY_SIZE (TREE_TYPE (decl)); | |
5233 size = fold_build2_loc (input_location, MULT_EXPR, size_type_node, | |
5234 fold_convert (size_type_node, tmp), size); | |
5235 } | |
5236 | |
5237 gcc_assert (GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE (decl)) != NULL_TREE); | |
5238 token = gfc_build_addr_expr (ppvoid_type_node, | |
5239 GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE(decl))); | |
5240 if (is_lock_type) | |
5241 reg_type = sym->attr.artificial ? GFC_CAF_CRITICAL : GFC_CAF_LOCK_STATIC; | |
5242 else if (is_event_type) | |
5243 reg_type = GFC_CAF_EVENT_STATIC; | |
5244 else | |
5245 reg_type = GFC_CAF_COARRAY_STATIC; | |
5246 | |
5247 /* Compile the symbol attribute. */ | |
5248 if (sym->ts.type == BT_CLASS) | |
5249 { | |
5250 attr = CLASS_DATA (sym)->attr; | |
5251 /* The pointer attribute is always set on classes, overwrite it with the | |
5252 class_pointer attribute, which denotes the pointer for classes. */ | |
5253 attr.pointer = attr.class_pointer; | |
5254 } | |
5255 else | |
5256 attr = sym->attr; | |
5257 gfc_init_se (&se, NULL); | |
5258 desc = gfc_conv_scalar_to_descriptor (&se, decl, attr); | |
5259 gfc_add_block_to_block (&caf_init_block, &se.pre); | |
5260 | |
5261 tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_register, 7, size, | |
5262 build_int_cst (integer_type_node, reg_type), | |
5263 token, gfc_build_addr_expr (pvoid_type_node, desc), | |
5264 null_pointer_node, /* stat. */ | |
5265 null_pointer_node, /* errgmsg. */ | |
5266 integer_zero_node); /* errmsg_len. */ | |
5267 gfc_add_expr_to_block (&caf_init_block, tmp); | |
5268 gfc_add_modify (&caf_init_block, decl, fold_convert (TREE_TYPE (decl), | |
5269 gfc_conv_descriptor_data_get (desc))); | |
5270 | |
5271 /* Handle "static" initializer. */ | |
5272 if (sym->value) | |
5273 { | |
5274 sym->attr.pointer = 1; | |
5275 tmp = gfc_trans_assignment (gfc_lval_expr_from_sym (sym), sym->value, | |
5276 true, false); | |
5277 sym->attr.pointer = 0; | |
5278 gfc_add_expr_to_block (&caf_init_block, tmp); | |
5279 } | |
5280 else if (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.pointer_comp) | |
5281 { | |
5282 tmp = gfc_nullify_alloc_comp (sym->ts.u.derived, decl, sym->as | |
5283 ? sym->as->rank : 0, | |
5284 GFC_STRUCTURE_CAF_MODE_IN_COARRAY); | |
5285 gfc_add_expr_to_block (&caf_init_block, tmp); | |
5286 } | |
5287 } | |
5288 | |
5289 | |
5290 /* Generate constructor function to initialize static, nonallocatable | |
5291 coarrays. */ | |
5292 | |
5293 static void | |
5294 generate_coarray_init (gfc_namespace * ns __attribute((unused))) | |
5295 { | |
5296 tree fndecl, tmp, decl, save_fn_decl; | |
5297 | |
5298 save_fn_decl = current_function_decl; | |
5299 push_function_context (); | |
5300 | |
5301 tmp = build_function_type_list (void_type_node, NULL_TREE); | |
5302 fndecl = build_decl (input_location, FUNCTION_DECL, | |
5303 create_tmp_var_name ("_caf_init"), tmp); | |
5304 | |
5305 DECL_STATIC_CONSTRUCTOR (fndecl) = 1; | |
5306 SET_DECL_INIT_PRIORITY (fndecl, DEFAULT_INIT_PRIORITY); | |
5307 | |
5308 decl = build_decl (input_location, RESULT_DECL, NULL_TREE, void_type_node); | |
5309 DECL_ARTIFICIAL (decl) = 1; | |
5310 DECL_IGNORED_P (decl) = 1; | |
5311 DECL_CONTEXT (decl) = fndecl; | |
5312 DECL_RESULT (fndecl) = decl; | |
5313 | |
5314 pushdecl (fndecl); | |
5315 current_function_decl = fndecl; | |
5316 announce_function (fndecl); | |
5317 | |
5318 rest_of_decl_compilation (fndecl, 0, 0); | |
5319 make_decl_rtl (fndecl); | |
5320 allocate_struct_function (fndecl, false); | |
5321 | |
5322 pushlevel (); | |
5323 gfc_init_block (&caf_init_block); | |
5324 | |
5325 gfc_traverse_ns (ns, generate_coarray_sym_init); | |
5326 | |
5327 DECL_SAVED_TREE (fndecl) = gfc_finish_block (&caf_init_block); | |
5328 decl = getdecls (); | |
5329 | |
5330 poplevel (1, 1); | |
5331 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
5332 | |
5333 DECL_SAVED_TREE (fndecl) | |
5334 = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5335 DECL_INITIAL (fndecl)); | |
5336 dump_function (TDI_original, fndecl); | |
5337 | |
5338 cfun->function_end_locus = input_location; | |
5339 set_cfun (NULL); | |
5340 | |
5341 if (decl_function_context (fndecl)) | |
5342 (void) cgraph_node::create (fndecl); | |
5343 else | |
5344 cgraph_node::finalize_function (fndecl, true); | |
5345 | |
5346 pop_function_context (); | |
5347 current_function_decl = save_fn_decl; | |
5348 } | |
5349 | |
5350 | |
5351 static void | |
5352 create_module_nml_decl (gfc_symbol *sym) | |
5353 { | |
5354 if (sym->attr.flavor == FL_NAMELIST) | |
5355 { | |
5356 tree decl = generate_namelist_decl (sym); | |
5357 pushdecl (decl); | |
5358 gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
5359 DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
5360 rest_of_decl_compilation (decl, 1, 0); | |
5361 gfc_module_add_decl (cur_module, decl); | |
5362 } | |
5363 } | |
5364 | |
5365 | |
5366 /* Generate all the required code for module variables. */ | |
5367 | |
5368 void | |
5369 gfc_generate_module_vars (gfc_namespace * ns) | |
5370 { | |
5371 module_namespace = ns; | |
5372 cur_module = gfc_find_module (ns->proc_name->name); | |
5373 | |
5374 /* Check if the frontend left the namespace in a reasonable state. */ | |
5375 gcc_assert (ns->proc_name && !ns->proc_name->tlink); | |
5376 | |
5377 /* Generate COMMON blocks. */ | |
5378 gfc_trans_common (ns); | |
5379 | |
5380 has_coarray_vars = false; | |
5381 | |
5382 /* Create decls for all the module variables. */ | |
5383 gfc_traverse_ns (ns, gfc_create_module_variable); | |
5384 gfc_traverse_ns (ns, create_module_nml_decl); | |
5385 | |
5386 if (flag_coarray == GFC_FCOARRAY_LIB && has_coarray_vars) | |
5387 generate_coarray_init (ns); | |
5388 | |
5389 cur_module = NULL; | |
5390 | |
5391 gfc_trans_use_stmts (ns); | |
5392 gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); | |
5393 } | |
5394 | |
5395 | |
5396 static void | |
5397 gfc_generate_contained_functions (gfc_namespace * parent) | |
5398 { | |
5399 gfc_namespace *ns; | |
5400 | |
5401 /* We create all the prototypes before generating any code. */ | |
5402 for (ns = parent->contained; ns; ns = ns->sibling) | |
5403 { | |
5404 /* Skip namespaces from used modules. */ | |
5405 if (ns->parent != parent) | |
5406 continue; | |
5407 | |
5408 gfc_create_function_decl (ns, false); | |
5409 } | |
5410 | |
5411 for (ns = parent->contained; ns; ns = ns->sibling) | |
5412 { | |
5413 /* Skip namespaces from used modules. */ | |
5414 if (ns->parent != parent) | |
5415 continue; | |
5416 | |
5417 gfc_generate_function_code (ns); | |
5418 } | |
5419 } | |
5420 | |
5421 | |
5422 /* Drill down through expressions for the array specification bounds and | |
5423 character length calling generate_local_decl for all those variables | |
5424 that have not already been declared. */ | |
5425 | |
5426 static void | |
5427 generate_local_decl (gfc_symbol *); | |
5428 | |
5429 /* Traverse expr, marking all EXPR_VARIABLE symbols referenced. */ | |
5430 | |
5431 static bool | |
5432 expr_decls (gfc_expr *e, gfc_symbol *sym, | |
5433 int *f ATTRIBUTE_UNUSED) | |
5434 { | |
5435 if (e->expr_type != EXPR_VARIABLE | |
5436 || sym == e->symtree->n.sym | |
5437 || e->symtree->n.sym->mark | |
5438 || e->symtree->n.sym->ns != sym->ns) | |
5439 return false; | |
5440 | |
5441 generate_local_decl (e->symtree->n.sym); | |
5442 return false; | |
5443 } | |
5444 | |
5445 static void | |
5446 generate_expr_decls (gfc_symbol *sym, gfc_expr *e) | |
5447 { | |
5448 gfc_traverse_expr (e, sym, expr_decls, 0); | |
5449 } | |
5450 | |
5451 | |
5452 /* Check for dependencies in the character length and array spec. */ | |
5453 | |
5454 static void | |
5455 generate_dependency_declarations (gfc_symbol *sym) | |
5456 { | |
5457 int i; | |
5458 | |
5459 if (sym->ts.type == BT_CHARACTER | |
5460 && sym->ts.u.cl | |
5461 && sym->ts.u.cl->length | |
5462 && sym->ts.u.cl->length->expr_type != EXPR_CONSTANT) | |
5463 generate_expr_decls (sym, sym->ts.u.cl->length); | |
5464 | |
5465 if (sym->as && sym->as->rank) | |
5466 { | |
5467 for (i = 0; i < sym->as->rank; i++) | |
5468 { | |
5469 generate_expr_decls (sym, sym->as->lower[i]); | |
5470 generate_expr_decls (sym, sym->as->upper[i]); | |
5471 } | |
5472 } | |
5473 } | |
5474 | |
5475 | |
5476 /* Generate decls for all local variables. We do this to ensure correct | |
5477 handling of expressions which only appear in the specification of | |
5478 other functions. */ | |
5479 | |
5480 static void | |
5481 generate_local_decl (gfc_symbol * sym) | |
5482 { | |
5483 if (sym->attr.flavor == FL_VARIABLE) | |
5484 { | |
5485 if (sym->attr.codimension && !sym->attr.dummy && !sym->attr.allocatable | |
5486 && sym->attr.referenced && !sym->attr.use_assoc) | |
5487 has_coarray_vars = true; | |
5488 | |
5489 if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master) | |
5490 generate_dependency_declarations (sym); | |
5491 | |
5492 if (sym->attr.referenced) | |
5493 gfc_get_symbol_decl (sym); | |
5494 | |
5495 /* Warnings for unused dummy arguments. */ | |
5496 else if (sym->attr.dummy && !sym->attr.in_namelist) | |
5497 { | |
5498 /* INTENT(out) dummy arguments are likely meant to be set. */ | |
5499 if (warn_unused_dummy_argument && sym->attr.intent == INTENT_OUT) | |
5500 { | |
5501 if (sym->ts.type != BT_DERIVED) | |
5502 gfc_warning (OPT_Wunused_dummy_argument, | |
5503 "Dummy argument %qs at %L was declared " | |
5504 "INTENT(OUT) but was not set", sym->name, | |
5505 &sym->declared_at); | |
5506 else if (!gfc_has_default_initializer (sym->ts.u.derived) | |
5507 && !sym->ts.u.derived->attr.zero_comp) | |
5508 gfc_warning (OPT_Wunused_dummy_argument, | |
5509 "Derived-type dummy argument %qs at %L was " | |
5510 "declared INTENT(OUT) but was not set and " | |
5511 "does not have a default initializer", | |
5512 sym->name, &sym->declared_at); | |
5513 if (sym->backend_decl != NULL_TREE) | |
5514 TREE_NO_WARNING(sym->backend_decl) = 1; | |
5515 } | |
5516 else if (warn_unused_dummy_argument) | |
5517 { | |
5518 gfc_warning (OPT_Wunused_dummy_argument, | |
5519 "Unused dummy argument %qs at %L", sym->name, | |
5520 &sym->declared_at); | |
5521 if (sym->backend_decl != NULL_TREE) | |
5522 TREE_NO_WARNING(sym->backend_decl) = 1; | |
5523 } | |
5524 } | |
5525 | |
5526 /* Warn for unused variables, but not if they're inside a common | |
5527 block or a namelist. */ | |
5528 else if (warn_unused_variable | |
5529 && !(sym->attr.in_common || sym->mark || sym->attr.in_namelist)) | |
5530 { | |
5531 if (sym->attr.use_only) | |
5532 { | |
5533 gfc_warning (OPT_Wunused_variable, | |
5534 "Unused module variable %qs which has been " | |
5535 "explicitly imported at %L", sym->name, | |
5536 &sym->declared_at); | |
5537 if (sym->backend_decl != NULL_TREE) | |
5538 TREE_NO_WARNING(sym->backend_decl) = 1; | |
5539 } | |
5540 else if (!sym->attr.use_assoc) | |
5541 { | |
5542 /* Corner case: the symbol may be an entry point. At this point, | |
5543 it may appear to be an unused variable. Suppress warning. */ | |
5544 bool enter = false; | |
5545 gfc_entry_list *el; | |
5546 | |
5547 for (el = sym->ns->entries; el; el=el->next) | |
5548 if (strcmp(sym->name, el->sym->name) == 0) | |
5549 enter = true; | |
5550 | |
5551 if (!enter) | |
5552 gfc_warning (OPT_Wunused_variable, | |
5553 "Unused variable %qs declared at %L", | |
5554 sym->name, &sym->declared_at); | |
5555 if (sym->backend_decl != NULL_TREE) | |
5556 TREE_NO_WARNING(sym->backend_decl) = 1; | |
5557 } | |
5558 } | |
5559 | |
5560 /* For variable length CHARACTER parameters, the PARM_DECL already | |
5561 references the length variable, so force gfc_get_symbol_decl | |
5562 even when not referenced. If optimize > 0, it will be optimized | |
5563 away anyway. But do this only after emitting -Wunused-parameter | |
5564 warning if requested. */ | |
5565 if (sym->attr.dummy && !sym->attr.referenced | |
5566 && sym->ts.type == BT_CHARACTER | |
5567 && sym->ts.u.cl->backend_decl != NULL | |
5568 && VAR_P (sym->ts.u.cl->backend_decl)) | |
5569 { | |
5570 sym->attr.referenced = 1; | |
5571 gfc_get_symbol_decl (sym); | |
5572 } | |
5573 | |
5574 /* INTENT(out) dummy arguments and result variables with allocatable | |
5575 components are reset by default and need to be set referenced to | |
5576 generate the code for nullification and automatic lengths. */ | |
5577 if (!sym->attr.referenced | |
5578 && sym->ts.type == BT_DERIVED | |
5579 && sym->ts.u.derived->attr.alloc_comp | |
5580 && !sym->attr.pointer | |
5581 && ((sym->attr.dummy && sym->attr.intent == INTENT_OUT) | |
5582 || | |
5583 (sym->attr.result && sym != sym->result))) | |
5584 { | |
5585 sym->attr.referenced = 1; | |
5586 gfc_get_symbol_decl (sym); | |
5587 } | |
5588 | |
5589 /* Check for dependencies in the array specification and string | |
5590 length, adding the necessary declarations to the function. We | |
5591 mark the symbol now, as well as in traverse_ns, to prevent | |
5592 getting stuck in a circular dependency. */ | |
5593 sym->mark = 1; | |
5594 } | |
5595 else if (sym->attr.flavor == FL_PARAMETER) | |
5596 { | |
5597 if (warn_unused_parameter | |
5598 && !sym->attr.referenced) | |
5599 { | |
5600 if (!sym->attr.use_assoc) | |
5601 gfc_warning (OPT_Wunused_parameter, | |
5602 "Unused parameter %qs declared at %L", sym->name, | |
5603 &sym->declared_at); | |
5604 else if (sym->attr.use_only) | |
5605 gfc_warning (OPT_Wunused_parameter, | |
5606 "Unused parameter %qs which has been explicitly " | |
5607 "imported at %L", sym->name, &sym->declared_at); | |
5608 } | |
5609 | |
5610 if (sym->ns | |
5611 && sym->ns->parent | |
5612 && sym->ns->parent->code | |
5613 && sym->ns->parent->code->op == EXEC_BLOCK) | |
5614 { | |
5615 if (sym->attr.referenced) | |
5616 gfc_get_symbol_decl (sym); | |
5617 sym->mark = 1; | |
5618 } | |
5619 } | |
5620 else if (sym->attr.flavor == FL_PROCEDURE) | |
5621 { | |
5622 /* TODO: move to the appropriate place in resolve.c. */ | |
5623 if (warn_return_type | |
5624 && sym->attr.function | |
5625 && sym->result | |
5626 && sym != sym->result | |
5627 && !sym->result->attr.referenced | |
5628 && !sym->attr.use_assoc | |
5629 && sym->attr.if_source != IFSRC_IFBODY) | |
5630 { | |
5631 gfc_warning (OPT_Wreturn_type, | |
5632 "Return value %qs of function %qs declared at " | |
5633 "%L not set", sym->result->name, sym->name, | |
5634 &sym->result->declared_at); | |
5635 | |
5636 /* Prevents "Unused variable" warning for RESULT variables. */ | |
5637 sym->result->mark = 1; | |
5638 } | |
5639 } | |
5640 | |
5641 if (sym->attr.dummy == 1) | |
5642 { | |
5643 /* Modify the tree type for scalar character dummy arguments of bind(c) | |
5644 procedures if they are passed by value. The tree type for them will | |
5645 be promoted to INTEGER_TYPE for the middle end, which appears to be | |
5646 what C would do with characters passed by-value. The value attribute | |
5647 implies the dummy is a scalar. */ | |
5648 if (sym->attr.value == 1 && sym->backend_decl != NULL | |
5649 && sym->ts.type == BT_CHARACTER && sym->ts.is_c_interop | |
5650 && sym->ns->proc_name != NULL && sym->ns->proc_name->attr.is_bind_c) | |
5651 gfc_conv_scalar_char_value (sym, NULL, NULL); | |
5652 | |
5653 /* Unused procedure passed as dummy argument. */ | |
5654 if (sym->attr.flavor == FL_PROCEDURE) | |
5655 { | |
5656 if (!sym->attr.referenced) | |
5657 { | |
5658 if (warn_unused_dummy_argument) | |
5659 gfc_warning (OPT_Wunused_dummy_argument, | |
5660 "Unused dummy argument %qs at %L", sym->name, | |
5661 &sym->declared_at); | |
5662 } | |
5663 | |
5664 /* Silence bogus "unused parameter" warnings from the | |
5665 middle end. */ | |
5666 if (sym->backend_decl != NULL_TREE) | |
5667 TREE_NO_WARNING (sym->backend_decl) = 1; | |
5668 } | |
5669 } | |
5670 | |
5671 /* Make sure we convert the types of the derived types from iso_c_binding | |
5672 into (void *). */ | |
5673 if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
5674 && sym->ts.type == BT_DERIVED) | |
5675 sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
5676 } | |
5677 | |
5678 | |
5679 static void | |
5680 generate_local_nml_decl (gfc_symbol * sym) | |
5681 { | |
5682 if (sym->attr.flavor == FL_NAMELIST && !sym->attr.use_assoc) | |
5683 { | |
5684 tree decl = generate_namelist_decl (sym); | |
5685 pushdecl (decl); | |
5686 } | |
5687 } | |
5688 | |
5689 | |
5690 static void | |
5691 generate_local_vars (gfc_namespace * ns) | |
5692 { | |
5693 gfc_traverse_ns (ns, generate_local_decl); | |
5694 gfc_traverse_ns (ns, generate_local_nml_decl); | |
5695 } | |
5696 | |
5697 | |
5698 /* Generate a switch statement to jump to the correct entry point. Also | |
5699 creates the label decls for the entry points. */ | |
5700 | |
5701 static tree | |
5702 gfc_trans_entry_master_switch (gfc_entry_list * el) | |
5703 { | |
5704 stmtblock_t block; | |
5705 tree label; | |
5706 tree tmp; | |
5707 tree val; | |
5708 | |
5709 gfc_init_block (&block); | |
5710 for (; el; el = el->next) | |
5711 { | |
5712 /* Add the case label. */ | |
5713 label = gfc_build_label_decl (NULL_TREE); | |
5714 val = build_int_cst (gfc_array_index_type, el->id); | |
5715 tmp = build_case_label (val, NULL_TREE, label); | |
5716 gfc_add_expr_to_block (&block, tmp); | |
5717 | |
5718 /* And jump to the actual entry point. */ | |
5719 label = gfc_build_label_decl (NULL_TREE); | |
5720 tmp = build1_v (GOTO_EXPR, label); | |
5721 gfc_add_expr_to_block (&block, tmp); | |
5722 | |
5723 /* Save the label decl. */ | |
5724 el->label = label; | |
5725 } | |
5726 tmp = gfc_finish_block (&block); | |
5727 /* The first argument selects the entry point. */ | |
5728 val = DECL_ARGUMENTS (current_function_decl); | |
5729 tmp = fold_build3_loc (input_location, SWITCH_EXPR, NULL_TREE, | |
5730 val, tmp, NULL_TREE); | |
5731 return tmp; | |
5732 } | |
5733 | |
5734 | |
5735 /* Add code to string lengths of actual arguments passed to a function against | |
5736 the expected lengths of the dummy arguments. */ | |
5737 | |
5738 static void | |
5739 add_argument_checking (stmtblock_t *block, gfc_symbol *sym) | |
5740 { | |
5741 gfc_formal_arglist *formal; | |
5742 | |
5743 for (formal = gfc_sym_get_dummy_args (sym); formal; formal = formal->next) | |
5744 if (formal->sym && formal->sym->ts.type == BT_CHARACTER | |
5745 && !formal->sym->ts.deferred) | |
5746 { | |
5747 enum tree_code comparison; | |
5748 tree cond; | |
5749 tree argname; | |
5750 gfc_symbol *fsym; | |
5751 gfc_charlen *cl; | |
5752 const char *message; | |
5753 | |
5754 fsym = formal->sym; | |
5755 cl = fsym->ts.u.cl; | |
5756 | |
5757 gcc_assert (cl); | |
5758 gcc_assert (cl->passed_length != NULL_TREE); | |
5759 gcc_assert (cl->backend_decl != NULL_TREE); | |
5760 | |
5761 /* For POINTER, ALLOCATABLE and assumed-shape dummy arguments, the | |
5762 string lengths must match exactly. Otherwise, it is only required | |
5763 that the actual string length is *at least* the expected one. | |
5764 Sequence association allows for a mismatch of the string length | |
5765 if the actual argument is (part of) an array, but only if the | |
5766 dummy argument is an array. (See "Sequence association" in | |
5767 Section 12.4.1.4 for F95 and 12.4.1.5 for F2003.) */ | |
5768 if (fsym->attr.pointer || fsym->attr.allocatable | |
5769 || (fsym->as && (fsym->as->type == AS_ASSUMED_SHAPE | |
5770 || fsym->as->type == AS_ASSUMED_RANK))) | |
5771 { | |
5772 comparison = NE_EXPR; | |
5773 message = _("Actual string length does not match the declared one" | |
5774 " for dummy argument '%s' (%ld/%ld)"); | |
5775 } | |
5776 else if (fsym->as && fsym->as->rank != 0) | |
5777 continue; | |
5778 else | |
5779 { | |
5780 comparison = LT_EXPR; | |
5781 message = _("Actual string length is shorter than the declared one" | |
5782 " for dummy argument '%s' (%ld/%ld)"); | |
5783 } | |
5784 | |
5785 /* Build the condition. For optional arguments, an actual length | |
5786 of 0 is also acceptable if the associated string is NULL, which | |
5787 means the argument was not passed. */ | |
5788 cond = fold_build2_loc (input_location, comparison, boolean_type_node, | |
5789 cl->passed_length, cl->backend_decl); | |
5790 if (fsym->attr.optional) | |
5791 { | |
5792 tree not_absent; | |
5793 tree not_0length; | |
5794 tree absent_failed; | |
5795 | |
5796 not_0length = fold_build2_loc (input_location, NE_EXPR, | |
5797 boolean_type_node, | |
5798 cl->passed_length, | |
5799 build_zero_cst (gfc_charlen_type_node)); | |
5800 /* The symbol needs to be referenced for gfc_get_symbol_decl. */ | |
5801 fsym->attr.referenced = 1; | |
5802 not_absent = gfc_conv_expr_present (fsym); | |
5803 | |
5804 absent_failed = fold_build2_loc (input_location, TRUTH_OR_EXPR, | |
5805 boolean_type_node, not_0length, | |
5806 not_absent); | |
5807 | |
5808 cond = fold_build2_loc (input_location, TRUTH_AND_EXPR, | |
5809 boolean_type_node, cond, absent_failed); | |
5810 } | |
5811 | |
5812 /* Build the runtime check. */ | |
5813 argname = gfc_build_cstring_const (fsym->name); | |
5814 argname = gfc_build_addr_expr (pchar_type_node, argname); | |
5815 gfc_trans_runtime_check (true, false, cond, block, &fsym->declared_at, | |
5816 message, argname, | |
5817 fold_convert (long_integer_type_node, | |
5818 cl->passed_length), | |
5819 fold_convert (long_integer_type_node, | |
5820 cl->backend_decl)); | |
5821 } | |
5822 } | |
5823 | |
5824 | |
5825 static void | |
5826 create_main_function (tree fndecl) | |
5827 { | |
5828 tree old_context; | |
5829 tree ftn_main; | |
5830 tree tmp, decl, result_decl, argc, argv, typelist, arglist; | |
5831 stmtblock_t body; | |
5832 | |
5833 old_context = current_function_decl; | |
5834 | |
5835 if (old_context) | |
5836 { | |
5837 push_function_context (); | |
5838 saved_parent_function_decls = saved_function_decls; | |
5839 saved_function_decls = NULL_TREE; | |
5840 } | |
5841 | |
5842 /* main() function must be declared with global scope. */ | |
5843 gcc_assert (current_function_decl == NULL_TREE); | |
5844 | |
5845 /* Declare the function. */ | |
5846 tmp = build_function_type_list (integer_type_node, integer_type_node, | |
5847 build_pointer_type (pchar_type_node), | |
5848 NULL_TREE); | |
5849 main_identifier_node = get_identifier ("main"); | |
5850 ftn_main = build_decl (input_location, FUNCTION_DECL, | |
5851 main_identifier_node, tmp); | |
5852 DECL_EXTERNAL (ftn_main) = 0; | |
5853 TREE_PUBLIC (ftn_main) = 1; | |
5854 TREE_STATIC (ftn_main) = 1; | |
5855 DECL_ATTRIBUTES (ftn_main) | |
5856 = tree_cons (get_identifier("externally_visible"), NULL_TREE, NULL_TREE); | |
5857 | |
5858 /* Setup the result declaration (for "return 0"). */ | |
5859 result_decl = build_decl (input_location, | |
5860 RESULT_DECL, NULL_TREE, integer_type_node); | |
5861 DECL_ARTIFICIAL (result_decl) = 1; | |
5862 DECL_IGNORED_P (result_decl) = 1; | |
5863 DECL_CONTEXT (result_decl) = ftn_main; | |
5864 DECL_RESULT (ftn_main) = result_decl; | |
5865 | |
5866 pushdecl (ftn_main); | |
5867 | |
5868 /* Get the arguments. */ | |
5869 | |
5870 arglist = NULL_TREE; | |
5871 typelist = TYPE_ARG_TYPES (TREE_TYPE (ftn_main)); | |
5872 | |
5873 tmp = TREE_VALUE (typelist); | |
5874 argc = build_decl (input_location, PARM_DECL, get_identifier ("argc"), tmp); | |
5875 DECL_CONTEXT (argc) = ftn_main; | |
5876 DECL_ARG_TYPE (argc) = TREE_VALUE (typelist); | |
5877 TREE_READONLY (argc) = 1; | |
5878 gfc_finish_decl (argc); | |
5879 arglist = chainon (arglist, argc); | |
5880 | |
5881 typelist = TREE_CHAIN (typelist); | |
5882 tmp = TREE_VALUE (typelist); | |
5883 argv = build_decl (input_location, PARM_DECL, get_identifier ("argv"), tmp); | |
5884 DECL_CONTEXT (argv) = ftn_main; | |
5885 DECL_ARG_TYPE (argv) = TREE_VALUE (typelist); | |
5886 TREE_READONLY (argv) = 1; | |
5887 DECL_BY_REFERENCE (argv) = 1; | |
5888 gfc_finish_decl (argv); | |
5889 arglist = chainon (arglist, argv); | |
5890 | |
5891 DECL_ARGUMENTS (ftn_main) = arglist; | |
5892 current_function_decl = ftn_main; | |
5893 announce_function (ftn_main); | |
5894 | |
5895 rest_of_decl_compilation (ftn_main, 1, 0); | |
5896 make_decl_rtl (ftn_main); | |
5897 allocate_struct_function (ftn_main, false); | |
5898 pushlevel (); | |
5899 | |
5900 gfc_init_block (&body); | |
5901 | |
5902 /* Call some libgfortran initialization routines, call then MAIN__(). */ | |
5903 | |
5904 /* Call _gfortran_caf_init (*argc, ***argv). */ | |
5905 if (flag_coarray == GFC_FCOARRAY_LIB) | |
5906 { | |
5907 tree pint_type, pppchar_type; | |
5908 pint_type = build_pointer_type (integer_type_node); | |
5909 pppchar_type | |
5910 = build_pointer_type (build_pointer_type (pchar_type_node)); | |
5911 | |
5912 tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_init, 2, | |
5913 gfc_build_addr_expr (pint_type, argc), | |
5914 gfc_build_addr_expr (pppchar_type, argv)); | |
5915 gfc_add_expr_to_block (&body, tmp); | |
5916 } | |
5917 | |
5918 /* Call _gfortran_set_args (argc, argv). */ | |
5919 TREE_USED (argc) = 1; | |
5920 TREE_USED (argv) = 1; | |
5921 tmp = build_call_expr_loc (input_location, | |
5922 gfor_fndecl_set_args, 2, argc, argv); | |
5923 gfc_add_expr_to_block (&body, tmp); | |
5924 | |
5925 /* Add a call to set_options to set up the runtime library Fortran | |
5926 language standard parameters. */ | |
5927 { | |
5928 tree array_type, array, var; | |
5929 vec<constructor_elt, va_gc> *v = NULL; | |
5930 static const int noptions = 7; | |
5931 | |
5932 /* Passing a new option to the library requires three modifications: | |
5933 + add it to the tree_cons list below | |
5934 + change the noptions variable above | |
5935 + modify the library (runtime/compile_options.c)! */ | |
5936 | |
5937 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5938 build_int_cst (integer_type_node, | |
5939 gfc_option.warn_std)); | |
5940 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5941 build_int_cst (integer_type_node, | |
5942 gfc_option.allow_std)); | |
5943 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5944 build_int_cst (integer_type_node, pedantic)); | |
5945 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5946 build_int_cst (integer_type_node, flag_backtrace)); | |
5947 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5948 build_int_cst (integer_type_node, flag_sign_zero)); | |
5949 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5950 build_int_cst (integer_type_node, | |
5951 (gfc_option.rtcheck | |
5952 & GFC_RTCHECK_BOUNDS))); | |
5953 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5954 build_int_cst (integer_type_node, | |
5955 gfc_option.fpe_summary)); | |
5956 | |
5957 array_type = build_array_type_nelts (integer_type_node, noptions); | |
5958 array = build_constructor (array_type, v); | |
5959 TREE_CONSTANT (array) = 1; | |
5960 TREE_STATIC (array) = 1; | |
5961 | |
5962 /* Create a static variable to hold the jump table. */ | |
5963 var = build_decl (input_location, VAR_DECL, | |
5964 create_tmp_var_name ("options"), array_type); | |
5965 DECL_ARTIFICIAL (var) = 1; | |
5966 DECL_IGNORED_P (var) = 1; | |
5967 TREE_CONSTANT (var) = 1; | |
5968 TREE_STATIC (var) = 1; | |
5969 TREE_READONLY (var) = 1; | |
5970 DECL_INITIAL (var) = array; | |
5971 pushdecl (var); | |
5972 var = gfc_build_addr_expr (build_pointer_type (integer_type_node), var); | |
5973 | |
5974 tmp = build_call_expr_loc (input_location, | |
5975 gfor_fndecl_set_options, 2, | |
5976 build_int_cst (integer_type_node, noptions), var); | |
5977 gfc_add_expr_to_block (&body, tmp); | |
5978 } | |
5979 | |
5980 /* If -ffpe-trap option was provided, add a call to set_fpe so that | |
5981 the library will raise a FPE when needed. */ | |
5982 if (gfc_option.fpe != 0) | |
5983 { | |
5984 tmp = build_call_expr_loc (input_location, | |
5985 gfor_fndecl_set_fpe, 1, | |
5986 build_int_cst (integer_type_node, | |
5987 gfc_option.fpe)); | |
5988 gfc_add_expr_to_block (&body, tmp); | |
5989 } | |
5990 | |
5991 /* If this is the main program and an -fconvert option was provided, | |
5992 add a call to set_convert. */ | |
5993 | |
5994 if (flag_convert != GFC_FLAG_CONVERT_NATIVE) | |
5995 { | |
5996 tmp = build_call_expr_loc (input_location, | |
5997 gfor_fndecl_set_convert, 1, | |
5998 build_int_cst (integer_type_node, flag_convert)); | |
5999 gfc_add_expr_to_block (&body, tmp); | |
6000 } | |
6001 | |
6002 /* If this is the main program and an -frecord-marker option was provided, | |
6003 add a call to set_record_marker. */ | |
6004 | |
6005 if (flag_record_marker != 0) | |
6006 { | |
6007 tmp = build_call_expr_loc (input_location, | |
6008 gfor_fndecl_set_record_marker, 1, | |
6009 build_int_cst (integer_type_node, | |
6010 flag_record_marker)); | |
6011 gfc_add_expr_to_block (&body, tmp); | |
6012 } | |
6013 | |
6014 if (flag_max_subrecord_length != 0) | |
6015 { | |
6016 tmp = build_call_expr_loc (input_location, | |
6017 gfor_fndecl_set_max_subrecord_length, 1, | |
6018 build_int_cst (integer_type_node, | |
6019 flag_max_subrecord_length)); | |
6020 gfc_add_expr_to_block (&body, tmp); | |
6021 } | |
6022 | |
6023 /* Call MAIN__(). */ | |
6024 tmp = build_call_expr_loc (input_location, | |
6025 fndecl, 0); | |
6026 gfc_add_expr_to_block (&body, tmp); | |
6027 | |
6028 /* Mark MAIN__ as used. */ | |
6029 TREE_USED (fndecl) = 1; | |
6030 | |
6031 /* Coarray: Call _gfortran_caf_finalize(void). */ | |
6032 if (flag_coarray == GFC_FCOARRAY_LIB) | |
6033 { | |
6034 tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_finalize, 0); | |
6035 gfc_add_expr_to_block (&body, tmp); | |
6036 } | |
6037 | |
6038 /* "return 0". */ | |
6039 tmp = fold_build2_loc (input_location, MODIFY_EXPR, integer_type_node, | |
6040 DECL_RESULT (ftn_main), | |
6041 build_int_cst (integer_type_node, 0)); | |
6042 tmp = build1_v (RETURN_EXPR, tmp); | |
6043 gfc_add_expr_to_block (&body, tmp); | |
6044 | |
6045 | |
6046 DECL_SAVED_TREE (ftn_main) = gfc_finish_block (&body); | |
6047 decl = getdecls (); | |
6048 | |
6049 /* Finish off this function and send it for code generation. */ | |
6050 poplevel (1, 1); | |
6051 BLOCK_SUPERCONTEXT (DECL_INITIAL (ftn_main)) = ftn_main; | |
6052 | |
6053 DECL_SAVED_TREE (ftn_main) | |
6054 = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (ftn_main), | |
6055 DECL_INITIAL (ftn_main)); | |
6056 | |
6057 /* Output the GENERIC tree. */ | |
6058 dump_function (TDI_original, ftn_main); | |
6059 | |
6060 cgraph_node::finalize_function (ftn_main, true); | |
6061 | |
6062 if (old_context) | |
6063 { | |
6064 pop_function_context (); | |
6065 saved_function_decls = saved_parent_function_decls; | |
6066 } | |
6067 current_function_decl = old_context; | |
6068 } | |
6069 | |
6070 | |
6071 /* Get the result expression for a procedure. */ | |
6072 | |
6073 static tree | |
6074 get_proc_result (gfc_symbol* sym) | |
6075 { | |
6076 if (sym->attr.subroutine || sym == sym->result) | |
6077 { | |
6078 if (current_fake_result_decl != NULL) | |
6079 return TREE_VALUE (current_fake_result_decl); | |
6080 | |
6081 return NULL_TREE; | |
6082 } | |
6083 | |
6084 return sym->result->backend_decl; | |
6085 } | |
6086 | |
6087 | |
6088 /* Generate an appropriate return-statement for a procedure. */ | |
6089 | |
6090 tree | |
6091 gfc_generate_return (void) | |
6092 { | |
6093 gfc_symbol* sym; | |
6094 tree result; | |
6095 tree fndecl; | |
6096 | |
6097 sym = current_procedure_symbol; | |
6098 fndecl = sym->backend_decl; | |
6099 | |
6100 if (TREE_TYPE (DECL_RESULT (fndecl)) == void_type_node) | |
6101 result = NULL_TREE; | |
6102 else | |
6103 { | |
6104 result = get_proc_result (sym); | |
6105 | |
6106 /* Set the return value to the dummy result variable. The | |
6107 types may be different for scalar default REAL functions | |
6108 with -ff2c, therefore we have to convert. */ | |
6109 if (result != NULL_TREE) | |
6110 { | |
6111 result = convert (TREE_TYPE (DECL_RESULT (fndecl)), result); | |
6112 result = fold_build2_loc (input_location, MODIFY_EXPR, | |
6113 TREE_TYPE (result), DECL_RESULT (fndecl), | |
6114 result); | |
6115 } | |
6116 } | |
6117 | |
6118 return build1_v (RETURN_EXPR, result); | |
6119 } | |
6120 | |
6121 | |
6122 static void | |
6123 is_from_ieee_module (gfc_symbol *sym) | |
6124 { | |
6125 if (sym->from_intmod == INTMOD_IEEE_FEATURES | |
6126 || sym->from_intmod == INTMOD_IEEE_EXCEPTIONS | |
6127 || sym->from_intmod == INTMOD_IEEE_ARITHMETIC) | |
6128 seen_ieee_symbol = 1; | |
6129 } | |
6130 | |
6131 | |
6132 static int | |
6133 is_ieee_module_used (gfc_namespace *ns) | |
6134 { | |
6135 seen_ieee_symbol = 0; | |
6136 gfc_traverse_ns (ns, is_from_ieee_module); | |
6137 return seen_ieee_symbol; | |
6138 } | |
6139 | |
6140 | |
6141 static gfc_omp_clauses *module_oacc_clauses; | |
6142 | |
6143 | |
6144 static void | |
6145 add_clause (gfc_symbol *sym, gfc_omp_map_op map_op) | |
6146 { | |
6147 gfc_omp_namelist *n; | |
6148 | |
6149 n = gfc_get_omp_namelist (); | |
6150 n->sym = sym; | |
6151 n->u.map_op = map_op; | |
6152 | |
6153 if (!module_oacc_clauses) | |
6154 module_oacc_clauses = gfc_get_omp_clauses (); | |
6155 | |
6156 if (module_oacc_clauses->lists[OMP_LIST_MAP]) | |
6157 n->next = module_oacc_clauses->lists[OMP_LIST_MAP]; | |
6158 | |
6159 module_oacc_clauses->lists[OMP_LIST_MAP] = n; | |
6160 } | |
6161 | |
6162 | |
6163 static void | |
6164 find_module_oacc_declare_clauses (gfc_symbol *sym) | |
6165 { | |
6166 if (sym->attr.use_assoc) | |
6167 { | |
6168 gfc_omp_map_op map_op; | |
6169 | |
6170 if (sym->attr.oacc_declare_create) | |
6171 map_op = OMP_MAP_FORCE_ALLOC; | |
6172 | |
6173 if (sym->attr.oacc_declare_copyin) | |
6174 map_op = OMP_MAP_FORCE_TO; | |
6175 | |
6176 if (sym->attr.oacc_declare_deviceptr) | |
6177 map_op = OMP_MAP_FORCE_DEVICEPTR; | |
6178 | |
6179 if (sym->attr.oacc_declare_device_resident) | |
6180 map_op = OMP_MAP_DEVICE_RESIDENT; | |
6181 | |
6182 if (sym->attr.oacc_declare_create | |
6183 || sym->attr.oacc_declare_copyin | |
6184 || sym->attr.oacc_declare_deviceptr | |
6185 || sym->attr.oacc_declare_device_resident) | |
6186 { | |
6187 sym->attr.referenced = 1; | |
6188 add_clause (sym, map_op); | |
6189 } | |
6190 } | |
6191 } | |
6192 | |
6193 | |
6194 void | |
6195 finish_oacc_declare (gfc_namespace *ns, gfc_symbol *sym, bool block) | |
6196 { | |
6197 gfc_code *code; | |
6198 gfc_oacc_declare *oc; | |
6199 locus where = gfc_current_locus; | |
6200 gfc_omp_clauses *omp_clauses = NULL; | |
6201 gfc_omp_namelist *n, *p; | |
6202 | |
6203 gfc_traverse_ns (ns, find_module_oacc_declare_clauses); | |
6204 | |
6205 if (module_oacc_clauses && sym->attr.flavor == FL_PROGRAM) | |
6206 { | |
6207 gfc_oacc_declare *new_oc; | |
6208 | |
6209 new_oc = gfc_get_oacc_declare (); | |
6210 new_oc->next = ns->oacc_declare; | |
6211 new_oc->clauses = module_oacc_clauses; | |
6212 | |
6213 ns->oacc_declare = new_oc; | |
6214 module_oacc_clauses = NULL; | |
6215 } | |
6216 | |
6217 if (!ns->oacc_declare) | |
6218 return; | |
6219 | |
6220 for (oc = ns->oacc_declare; oc; oc = oc->next) | |
6221 { | |
6222 if (oc->module_var) | |
6223 continue; | |
6224 | |
6225 if (block) | |
6226 gfc_error ("Sorry, !$ACC DECLARE at %L is not allowed " | |
6227 "in BLOCK construct", &oc->loc); | |
6228 | |
6229 | |
6230 if (oc->clauses && oc->clauses->lists[OMP_LIST_MAP]) | |
6231 { | |
6232 if (omp_clauses == NULL) | |
6233 { | |
6234 omp_clauses = oc->clauses; | |
6235 continue; | |
6236 } | |
6237 | |
6238 for (n = oc->clauses->lists[OMP_LIST_MAP]; n; p = n, n = n->next) | |
6239 ; | |
6240 | |
6241 gcc_assert (p->next == NULL); | |
6242 | |
6243 p->next = omp_clauses->lists[OMP_LIST_MAP]; | |
6244 omp_clauses = oc->clauses; | |
6245 } | |
6246 } | |
6247 | |
6248 if (!omp_clauses) | |
6249 return; | |
6250 | |
6251 for (n = omp_clauses->lists[OMP_LIST_MAP]; n; n = n->next) | |
6252 { | |
6253 switch (n->u.map_op) | |
6254 { | |
6255 case OMP_MAP_DEVICE_RESIDENT: | |
6256 n->u.map_op = OMP_MAP_FORCE_ALLOC; | |
6257 break; | |
6258 | |
6259 default: | |
6260 break; | |
6261 } | |
6262 } | |
6263 | |
6264 code = XCNEW (gfc_code); | |
6265 code->op = EXEC_OACC_DECLARE; | |
6266 code->loc = where; | |
6267 | |
6268 code->ext.oacc_declare = gfc_get_oacc_declare (); | |
6269 code->ext.oacc_declare->clauses = omp_clauses; | |
6270 | |
6271 code->block = XCNEW (gfc_code); | |
6272 code->block->op = EXEC_OACC_DECLARE; | |
6273 code->block->loc = where; | |
6274 | |
6275 if (ns->code) | |
6276 code->block->next = ns->code; | |
6277 | |
6278 ns->code = code; | |
6279 | |
6280 return; | |
6281 } | |
6282 | |
6283 | |
6284 /* Generate code for a function. */ | |
6285 | |
6286 void | |
6287 gfc_generate_function_code (gfc_namespace * ns) | |
6288 { | |
6289 tree fndecl; | |
6290 tree old_context; | |
6291 tree decl; | |
6292 tree tmp; | |
6293 tree fpstate = NULL_TREE; | |
6294 stmtblock_t init, cleanup; | |
6295 stmtblock_t body; | |
6296 gfc_wrapped_block try_block; | |
6297 tree recurcheckvar = NULL_TREE; | |
6298 gfc_symbol *sym; | |
6299 gfc_symbol *previous_procedure_symbol; | |
6300 int rank, ieee; | |
6301 bool is_recursive; | |
6302 | |
6303 sym = ns->proc_name; | |
6304 previous_procedure_symbol = current_procedure_symbol; | |
6305 current_procedure_symbol = sym; | |
6306 | |
6307 /* Initialize sym->tlink so that gfc_trans_deferred_vars does not get | |
6308 lost or worse. */ | |
6309 sym->tlink = sym; | |
6310 | |
6311 /* Create the declaration for functions with global scope. */ | |
6312 if (!sym->backend_decl) | |
6313 gfc_create_function_decl (ns, false); | |
6314 | |
6315 fndecl = sym->backend_decl; | |
6316 old_context = current_function_decl; | |
6317 | |
6318 if (old_context) | |
6319 { | |
6320 push_function_context (); | |
6321 saved_parent_function_decls = saved_function_decls; | |
6322 saved_function_decls = NULL_TREE; | |
6323 } | |
6324 | |
6325 trans_function_start (sym); | |
6326 | |
6327 gfc_init_block (&init); | |
6328 | |
6329 if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER) | |
6330 { | |
6331 /* Copy length backend_decls to all entry point result | |
6332 symbols. */ | |
6333 gfc_entry_list *el; | |
6334 tree backend_decl; | |
6335 | |
6336 gfc_conv_const_charlen (ns->proc_name->ts.u.cl); | |
6337 backend_decl = ns->proc_name->result->ts.u.cl->backend_decl; | |
6338 for (el = ns->entries; el; el = el->next) | |
6339 el->sym->result->ts.u.cl->backend_decl = backend_decl; | |
6340 } | |
6341 | |
6342 /* Translate COMMON blocks. */ | |
6343 gfc_trans_common (ns); | |
6344 | |
6345 /* Null the parent fake result declaration if this namespace is | |
6346 a module function or an external procedures. */ | |
6347 if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
6348 || ns->parent == NULL) | |
6349 parent_fake_result_decl = NULL_TREE; | |
6350 | |
6351 gfc_generate_contained_functions (ns); | |
6352 | |
6353 nonlocal_dummy_decls = NULL; | |
6354 nonlocal_dummy_decl_pset = NULL; | |
6355 | |
6356 has_coarray_vars = false; | |
6357 generate_local_vars (ns); | |
6358 | |
6359 if (flag_coarray == GFC_FCOARRAY_LIB && has_coarray_vars) | |
6360 generate_coarray_init (ns); | |
6361 | |
6362 /* Keep the parent fake result declaration in module functions | |
6363 or external procedures. */ | |
6364 if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
6365 || ns->parent == NULL) | |
6366 current_fake_result_decl = parent_fake_result_decl; | |
6367 else | |
6368 current_fake_result_decl = NULL_TREE; | |
6369 | |
6370 is_recursive = sym->attr.recursive | |
6371 || (sym->attr.entry_master | |
6372 && sym->ns->entries->sym->attr.recursive); | |
6373 if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
6374 && !is_recursive && !flag_recursive) | |
6375 { | |
6376 char * msg; | |
6377 | |
6378 msg = xasprintf ("Recursive call to nonrecursive procedure '%s'", | |
6379 sym->name); | |
6380 recurcheckvar = gfc_create_var (boolean_type_node, "is_recursive"); | |
6381 TREE_STATIC (recurcheckvar) = 1; | |
6382 DECL_INITIAL (recurcheckvar) = boolean_false_node; | |
6383 gfc_add_expr_to_block (&init, recurcheckvar); | |
6384 gfc_trans_runtime_check (true, false, recurcheckvar, &init, | |
6385 &sym->declared_at, msg); | |
6386 gfc_add_modify (&init, recurcheckvar, boolean_true_node); | |
6387 free (msg); | |
6388 } | |
6389 | |
6390 /* Check if an IEEE module is used in the procedure. If so, save | |
6391 the floating point state. */ | |
6392 ieee = is_ieee_module_used (ns); | |
6393 if (ieee) | |
6394 fpstate = gfc_save_fp_state (&init); | |
6395 | |
6396 /* Now generate the code for the body of this function. */ | |
6397 gfc_init_block (&body); | |
6398 | |
6399 if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node | |
6400 && sym->attr.subroutine) | |
6401 { | |
6402 tree alternate_return; | |
6403 alternate_return = gfc_get_fake_result_decl (sym, 0); | |
6404 gfc_add_modify (&body, alternate_return, integer_zero_node); | |
6405 } | |
6406 | |
6407 if (ns->entries) | |
6408 { | |
6409 /* Jump to the correct entry point. */ | |
6410 tmp = gfc_trans_entry_master_switch (ns->entries); | |
6411 gfc_add_expr_to_block (&body, tmp); | |
6412 } | |
6413 | |
6414 /* If bounds-checking is enabled, generate code to check passed in actual | |
6415 arguments against the expected dummy argument attributes (e.g. string | |
6416 lengths). */ | |
6417 if ((gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) && !sym->attr.is_bind_c) | |
6418 add_argument_checking (&body, sym); | |
6419 | |
6420 finish_oacc_declare (ns, sym, false); | |
6421 | |
6422 tmp = gfc_trans_code (ns->code); | |
6423 gfc_add_expr_to_block (&body, tmp); | |
6424 | |
6425 if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node | |
6426 || (sym->result && sym->result != sym | |
6427 && sym->result->ts.type == BT_DERIVED | |
6428 && sym->result->ts.u.derived->attr.alloc_comp)) | |
6429 { | |
6430 bool artificial_result_decl = false; | |
6431 tree result = get_proc_result (sym); | |
6432 gfc_symbol *rsym = sym == sym->result ? sym : sym->result; | |
6433 | |
6434 /* Make sure that a function returning an object with | |
6435 alloc/pointer_components always has a result, where at least | |
6436 the allocatable/pointer components are set to zero. */ | |
6437 if (result == NULL_TREE && sym->attr.function | |
6438 && ((sym->result->ts.type == BT_DERIVED | |
6439 && (sym->attr.allocatable | |
6440 || sym->attr.pointer | |
6441 || sym->result->ts.u.derived->attr.alloc_comp | |
6442 || sym->result->ts.u.derived->attr.pointer_comp)) | |
6443 || (sym->result->ts.type == BT_CLASS | |
6444 && (CLASS_DATA (sym)->attr.allocatable | |
6445 || CLASS_DATA (sym)->attr.class_pointer | |
6446 || CLASS_DATA (sym->result)->attr.alloc_comp | |
6447 || CLASS_DATA (sym->result)->attr.pointer_comp)))) | |
6448 { | |
6449 artificial_result_decl = true; | |
6450 result = gfc_get_fake_result_decl (sym, 0); | |
6451 } | |
6452 | |
6453 if (result != NULL_TREE && sym->attr.function && !sym->attr.pointer) | |
6454 { | |
6455 if (sym->attr.allocatable && sym->attr.dimension == 0 | |
6456 && sym->result == sym) | |
6457 gfc_add_modify (&init, result, fold_convert (TREE_TYPE (result), | |
6458 null_pointer_node)); | |
6459 else if (sym->ts.type == BT_CLASS | |
6460 && CLASS_DATA (sym)->attr.allocatable | |
6461 && CLASS_DATA (sym)->attr.dimension == 0 | |
6462 && sym->result == sym) | |
6463 { | |
6464 tmp = CLASS_DATA (sym)->backend_decl; | |
6465 tmp = fold_build3_loc (input_location, COMPONENT_REF, | |
6466 TREE_TYPE (tmp), result, tmp, NULL_TREE); | |
6467 gfc_add_modify (&init, tmp, fold_convert (TREE_TYPE (tmp), | |
6468 null_pointer_node)); | |
6469 } | |
6470 else if (sym->ts.type == BT_DERIVED | |
6471 && !sym->attr.allocatable) | |
6472 { | |
6473 gfc_expr *init_exp; | |
6474 /* Arrays are not initialized using the default initializer of | |
6475 their elements. Therefore only check if a default | |
6476 initializer is available when the result is scalar. */ | |
6477 init_exp = rsym->as ? NULL | |
6478 : gfc_generate_initializer (&rsym->ts, true); | |
6479 if (init_exp) | |
6480 { | |
6481 tmp = gfc_trans_structure_assign (result, init_exp, 0); | |
6482 gfc_free_expr (init_exp); | |
6483 gfc_add_expr_to_block (&init, tmp); | |
6484 } | |
6485 else if (rsym->ts.u.derived->attr.alloc_comp) | |
6486 { | |
6487 rank = rsym->as ? rsym->as->rank : 0; | |
6488 tmp = gfc_nullify_alloc_comp (rsym->ts.u.derived, result, | |
6489 rank); | |
6490 gfc_prepend_expr_to_block (&body, tmp); | |
6491 } | |
6492 } | |
6493 } | |
6494 | |
6495 if (result == NULL_TREE || artificial_result_decl) | |
6496 { | |
6497 /* TODO: move to the appropriate place in resolve.c. */ | |
6498 if (warn_return_type && sym == sym->result) | |
6499 gfc_warning (OPT_Wreturn_type, | |
6500 "Return value of function %qs at %L not set", | |
6501 sym->name, &sym->declared_at); | |
6502 if (warn_return_type) | |
6503 TREE_NO_WARNING(sym->backend_decl) = 1; | |
6504 } | |
6505 if (result != NULL_TREE) | |
6506 gfc_add_expr_to_block (&body, gfc_generate_return ()); | |
6507 } | |
6508 | |
6509 gfc_init_block (&cleanup); | |
6510 | |
6511 /* Reset recursion-check variable. */ | |
6512 if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
6513 && !is_recursive && !flag_openmp && recurcheckvar != NULL_TREE) | |
6514 { | |
6515 gfc_add_modify (&cleanup, recurcheckvar, boolean_false_node); | |
6516 recurcheckvar = NULL; | |
6517 } | |
6518 | |
6519 /* If IEEE modules are loaded, restore the floating-point state. */ | |
6520 if (ieee) | |
6521 gfc_restore_fp_state (&cleanup, fpstate); | |
6522 | |
6523 /* Finish the function body and add init and cleanup code. */ | |
6524 tmp = gfc_finish_block (&body); | |
6525 gfc_start_wrapped_block (&try_block, tmp); | |
6526 /* Add code to create and cleanup arrays. */ | |
6527 gfc_trans_deferred_vars (sym, &try_block); | |
6528 gfc_add_init_cleanup (&try_block, gfc_finish_block (&init), | |
6529 gfc_finish_block (&cleanup)); | |
6530 | |
6531 /* Add all the decls we created during processing. */ | |
6532 decl = nreverse (saved_function_decls); | |
6533 while (decl) | |
6534 { | |
6535 tree next; | |
6536 | |
6537 next = DECL_CHAIN (decl); | |
6538 DECL_CHAIN (decl) = NULL_TREE; | |
6539 pushdecl (decl); | |
6540 decl = next; | |
6541 } | |
6542 saved_function_decls = NULL_TREE; | |
6543 | |
6544 DECL_SAVED_TREE (fndecl) = gfc_finish_wrapped_block (&try_block); | |
6545 decl = getdecls (); | |
6546 | |
6547 /* Finish off this function and send it for code generation. */ | |
6548 poplevel (1, 1); | |
6549 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
6550 | |
6551 DECL_SAVED_TREE (fndecl) | |
6552 = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
6553 DECL_INITIAL (fndecl)); | |
6554 | |
6555 if (nonlocal_dummy_decls) | |
6556 { | |
6557 BLOCK_VARS (DECL_INITIAL (fndecl)) | |
6558 = chainon (BLOCK_VARS (DECL_INITIAL (fndecl)), nonlocal_dummy_decls); | |
6559 delete nonlocal_dummy_decl_pset; | |
6560 nonlocal_dummy_decls = NULL; | |
6561 nonlocal_dummy_decl_pset = NULL; | |
6562 } | |
6563 | |
6564 /* Output the GENERIC tree. */ | |
6565 dump_function (TDI_original, fndecl); | |
6566 | |
6567 /* Store the end of the function, so that we get good line number | |
6568 info for the epilogue. */ | |
6569 cfun->function_end_locus = input_location; | |
6570 | |
6571 /* We're leaving the context of this function, so zap cfun. | |
6572 It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
6573 tree_rest_of_compilation. */ | |
6574 set_cfun (NULL); | |
6575 | |
6576 if (old_context) | |
6577 { | |
6578 pop_function_context (); | |
6579 saved_function_decls = saved_parent_function_decls; | |
6580 } | |
6581 current_function_decl = old_context; | |
6582 | |
6583 if (decl_function_context (fndecl)) | |
6584 { | |
6585 /* Register this function with cgraph just far enough to get it | |
6586 added to our parent's nested function list. | |
6587 If there are static coarrays in this function, the nested _caf_init | |
6588 function has already called cgraph_create_node, which also created | |
6589 the cgraph node for this function. */ | |
6590 if (!has_coarray_vars || flag_coarray != GFC_FCOARRAY_LIB) | |
6591 (void) cgraph_node::get_create (fndecl); | |
6592 } | |
6593 else | |
6594 cgraph_node::finalize_function (fndecl, true); | |
6595 | |
6596 gfc_trans_use_stmts (ns); | |
6597 gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); | |
6598 | |
6599 if (sym->attr.is_main_program) | |
6600 create_main_function (fndecl); | |
6601 | |
6602 current_procedure_symbol = previous_procedure_symbol; | |
6603 } | |
6604 | |
6605 | |
6606 void | |
6607 gfc_generate_constructors (void) | |
6608 { | |
6609 gcc_assert (gfc_static_ctors == NULL_TREE); | |
6610 #if 0 | |
6611 tree fnname; | |
6612 tree type; | |
6613 tree fndecl; | |
6614 tree decl; | |
6615 tree tmp; | |
6616 | |
6617 if (gfc_static_ctors == NULL_TREE) | |
6618 return; | |
6619 | |
6620 fnname = get_file_function_name ("I"); | |
6621 type = build_function_type_list (void_type_node, NULL_TREE); | |
6622 | |
6623 fndecl = build_decl (input_location, | |
6624 FUNCTION_DECL, fnname, type); | |
6625 TREE_PUBLIC (fndecl) = 1; | |
6626 | |
6627 decl = build_decl (input_location, | |
6628 RESULT_DECL, NULL_TREE, void_type_node); | |
6629 DECL_ARTIFICIAL (decl) = 1; | |
6630 DECL_IGNORED_P (decl) = 1; | |
6631 DECL_CONTEXT (decl) = fndecl; | |
6632 DECL_RESULT (fndecl) = decl; | |
6633 | |
6634 pushdecl (fndecl); | |
6635 | |
6636 current_function_decl = fndecl; | |
6637 | |
6638 rest_of_decl_compilation (fndecl, 1, 0); | |
6639 | |
6640 make_decl_rtl (fndecl); | |
6641 | |
6642 allocate_struct_function (fndecl, false); | |
6643 | |
6644 pushlevel (); | |
6645 | |
6646 for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors)) | |
6647 { | |
6648 tmp = build_call_expr_loc (input_location, | |
6649 TREE_VALUE (gfc_static_ctors), 0); | |
6650 DECL_SAVED_TREE (fndecl) = build_stmt (input_location, EXPR_STMT, tmp); | |
6651 } | |
6652 | |
6653 decl = getdecls (); | |
6654 poplevel (1, 1); | |
6655 | |
6656 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
6657 DECL_SAVED_TREE (fndecl) | |
6658 = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
6659 DECL_INITIAL (fndecl)); | |
6660 | |
6661 free_after_parsing (cfun); | |
6662 free_after_compilation (cfun); | |
6663 | |
6664 tree_rest_of_compilation (fndecl); | |
6665 | |
6666 current_function_decl = NULL_TREE; | |
6667 #endif | |
6668 } | |
6669 | |
6670 /* Translates a BLOCK DATA program unit. This means emitting the | |
6671 commons contained therein plus their initializations. We also emit | |
6672 a globally visible symbol to make sure that each BLOCK DATA program | |
6673 unit remains unique. */ | |
6674 | |
6675 void | |
6676 gfc_generate_block_data (gfc_namespace * ns) | |
6677 { | |
6678 tree decl; | |
6679 tree id; | |
6680 | |
6681 /* Tell the backend the source location of the block data. */ | |
6682 if (ns->proc_name) | |
6683 gfc_set_backend_locus (&ns->proc_name->declared_at); | |
6684 else | |
6685 gfc_set_backend_locus (&gfc_current_locus); | |
6686 | |
6687 /* Process the DATA statements. */ | |
6688 gfc_trans_common (ns); | |
6689 | |
6690 /* Create a global symbol with the mane of the block data. This is to | |
6691 generate linker errors if the same name is used twice. It is never | |
6692 really used. */ | |
6693 if (ns->proc_name) | |
6694 id = gfc_sym_mangled_function_id (ns->proc_name); | |
6695 else | |
6696 id = get_identifier ("__BLOCK_DATA__"); | |
6697 | |
6698 decl = build_decl (input_location, | |
6699 VAR_DECL, id, gfc_array_index_type); | |
6700 TREE_PUBLIC (decl) = 1; | |
6701 TREE_STATIC (decl) = 1; | |
6702 DECL_IGNORED_P (decl) = 1; | |
6703 | |
6704 pushdecl (decl); | |
6705 rest_of_decl_compilation (decl, 1, 0); | |
6706 } | |
6707 | |
6708 | |
6709 /* Process the local variables of a BLOCK construct. */ | |
6710 | |
6711 void | |
6712 gfc_process_block_locals (gfc_namespace* ns) | |
6713 { | |
6714 tree decl; | |
6715 | |
6716 gcc_assert (saved_local_decls == NULL_TREE); | |
6717 has_coarray_vars = false; | |
6718 | |
6719 generate_local_vars (ns); | |
6720 | |
6721 if (flag_coarray == GFC_FCOARRAY_LIB && has_coarray_vars) | |
6722 generate_coarray_init (ns); | |
6723 | |
6724 decl = nreverse (saved_local_decls); | |
6725 while (decl) | |
6726 { | |
6727 tree next; | |
6728 | |
6729 next = DECL_CHAIN (decl); | |
6730 DECL_CHAIN (decl) = NULL_TREE; | |
6731 pushdecl (decl); | |
6732 decl = next; | |
6733 } | |
6734 saved_local_decls = NULL_TREE; | |
6735 } | |
6736 | |
6737 | |
6738 #include "gt-fortran-trans-decl.h" |