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6de9cd9a | 1 | /* Backend function setup |
975d3303 | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
66647d44 | 3 | Free Software Foundation, Inc. |
6de9cd9a DN |
4 | Contributed by Paul Brook |
5 | ||
9fc4d79b | 6 | This file is part of GCC. |
6de9cd9a | 7 | |
9fc4d79b TS |
8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
d234d788 | 10 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 11 | version. |
6de9cd9a | 12 | |
9fc4d79b TS |
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
6de9cd9a DN |
17 | |
18 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a DN |
21 | |
22 | /* trans-decl.c -- Handling of backend function and variable decls, etc */ | |
23 | ||
24 | #include "config.h" | |
25 | #include "system.h" | |
26 | #include "coretypes.h" | |
d347d97e | 27 | #include "tm.h" |
6de9cd9a DN |
28 | #include "tree.h" |
29 | #include "tree-dump.h" | |
a48ba7e1 | 30 | #include "gimple.h" /* For create_tmp_var_raw. */ |
6de9cd9a | 31 | #include "ggc.h" |
7274feea | 32 | #include "toplev.h" /* For announce_function/internal_error. */ |
d347d97e | 33 | #include "output.h" /* For decl_default_tls_model. */ |
6de9cd9a DN |
34 | #include "target.h" |
35 | #include "function.h" | |
6de9cd9a DN |
36 | #include "flags.h" |
37 | #include "cgraph.h" | |
a64f5186 | 38 | #include "debug.h" |
6de9cd9a | 39 | #include "gfortran.h" |
77f2a970 | 40 | #include "pointer-set.h" |
b7e75771 | 41 | #include "constructor.h" |
6de9cd9a DN |
42 | #include "trans.h" |
43 | #include "trans-types.h" | |
44 | #include "trans-array.h" | |
45 | #include "trans-const.h" | |
46 | /* Only for gfc_trans_code. Shouldn't need to include this. */ | |
47 | #include "trans-stmt.h" | |
48 | ||
49 | #define MAX_LABEL_VALUE 99999 | |
50 | ||
51 | ||
52 | /* Holds the result of the function if no result variable specified. */ | |
53 | ||
54 | static GTY(()) tree current_fake_result_decl; | |
5f20c93a | 55 | static GTY(()) tree parent_fake_result_decl; |
6de9cd9a DN |
56 | |
57 | static GTY(()) tree current_function_return_label; | |
58 | ||
59 | ||
60 | /* Holds the variable DECLs for the current function. */ | |
61 | ||
417ab240 JJ |
62 | static GTY(()) tree saved_function_decls; |
63 | static GTY(()) tree saved_parent_function_decls; | |
6de9cd9a | 64 | |
77f2a970 JJ |
65 | static struct pointer_set_t *nonlocal_dummy_decl_pset; |
66 | static GTY(()) tree nonlocal_dummy_decls; | |
6de9cd9a | 67 | |
9abe5e56 DK |
68 | /* Holds the variable DECLs that are locals. */ |
69 | ||
70 | static GTY(()) tree saved_local_decls; | |
71 | ||
6de9cd9a DN |
72 | /* The namespace of the module we're currently generating. Only used while |
73 | outputting decls for module variables. Do not rely on this being set. */ | |
74 | ||
75 | static gfc_namespace *module_namespace; | |
76 | ||
77 | ||
78 | /* List of static constructor functions. */ | |
79 | ||
80 | tree gfc_static_ctors; | |
81 | ||
82 | ||
83 | /* Function declarations for builtin library functions. */ | |
84 | ||
6de9cd9a DN |
85 | tree gfor_fndecl_pause_numeric; |
86 | tree gfor_fndecl_pause_string; | |
87 | tree gfor_fndecl_stop_numeric; | |
88 | tree gfor_fndecl_stop_string; | |
6d1b0f92 | 89 | tree gfor_fndecl_error_stop_numeric; |
d0a4a61c | 90 | tree gfor_fndecl_error_stop_string; |
6de9cd9a | 91 | tree gfor_fndecl_runtime_error; |
f96d606f | 92 | tree gfor_fndecl_runtime_error_at; |
0d52899f | 93 | tree gfor_fndecl_runtime_warning_at; |
1529b8d9 | 94 | tree gfor_fndecl_os_error; |
f96d606f | 95 | tree gfor_fndecl_generate_error; |
092231a8 | 96 | tree gfor_fndecl_set_args; |
944b8b35 | 97 | tree gfor_fndecl_set_fpe; |
68d2e027 | 98 | tree gfor_fndecl_set_options; |
eaa90d25 | 99 | tree gfor_fndecl_set_convert; |
d67ab5ee | 100 | tree gfor_fndecl_set_record_marker; |
07b3bbf2 | 101 | tree gfor_fndecl_set_max_subrecord_length; |
35059811 FXC |
102 | tree gfor_fndecl_ctime; |
103 | tree gfor_fndecl_fdate; | |
25fc05eb | 104 | tree gfor_fndecl_ttynam; |
6de9cd9a DN |
105 | tree gfor_fndecl_in_pack; |
106 | tree gfor_fndecl_in_unpack; | |
107 | tree gfor_fndecl_associated; | |
108 | ||
109 | ||
110 | /* Math functions. Many other math functions are handled in | |
111 | trans-intrinsic.c. */ | |
112 | ||
644cb69f | 113 | gfc_powdecl_list gfor_fndecl_math_powi[4][3]; |
6de9cd9a DN |
114 | tree gfor_fndecl_math_ishftc4; |
115 | tree gfor_fndecl_math_ishftc8; | |
644cb69f | 116 | tree gfor_fndecl_math_ishftc16; |
6de9cd9a DN |
117 | |
118 | ||
119 | /* String functions. */ | |
120 | ||
6de9cd9a DN |
121 | tree gfor_fndecl_compare_string; |
122 | tree gfor_fndecl_concat_string; | |
123 | tree gfor_fndecl_string_len_trim; | |
124 | tree gfor_fndecl_string_index; | |
125 | tree gfor_fndecl_string_scan; | |
126 | tree gfor_fndecl_string_verify; | |
127 | tree gfor_fndecl_string_trim; | |
2263c775 | 128 | tree gfor_fndecl_string_minmax; |
6de9cd9a DN |
129 | tree gfor_fndecl_adjustl; |
130 | tree gfor_fndecl_adjustr; | |
d393bbd7 | 131 | tree gfor_fndecl_select_string; |
374929b2 FXC |
132 | tree gfor_fndecl_compare_string_char4; |
133 | tree gfor_fndecl_concat_string_char4; | |
134 | tree gfor_fndecl_string_len_trim_char4; | |
135 | tree gfor_fndecl_string_index_char4; | |
136 | tree gfor_fndecl_string_scan_char4; | |
137 | tree gfor_fndecl_string_verify_char4; | |
138 | tree gfor_fndecl_string_trim_char4; | |
139 | tree gfor_fndecl_string_minmax_char4; | |
140 | tree gfor_fndecl_adjustl_char4; | |
141 | tree gfor_fndecl_adjustr_char4; | |
d393bbd7 FXC |
142 | tree gfor_fndecl_select_string_char4; |
143 | ||
144 | ||
145 | /* Conversion between character kinds. */ | |
146 | tree gfor_fndecl_convert_char1_to_char4; | |
147 | tree gfor_fndecl_convert_char4_to_char1; | |
6de9cd9a DN |
148 | |
149 | ||
150 | /* Other misc. runtime library functions. */ | |
151 | ||
152 | tree gfor_fndecl_size0; | |
153 | tree gfor_fndecl_size1; | |
b41b2534 | 154 | tree gfor_fndecl_iargc; |
0a05c536 FXC |
155 | tree gfor_fndecl_clz128; |
156 | tree gfor_fndecl_ctz128; | |
6de9cd9a | 157 | |
a39fafac FXC |
158 | /* Intrinsic functions implemented in Fortran. */ |
159 | tree gfor_fndecl_sc_kind; | |
6de9cd9a DN |
160 | tree gfor_fndecl_si_kind; |
161 | tree gfor_fndecl_sr_kind; | |
162 | ||
5a0aad31 FXC |
163 | /* BLAS gemm functions. */ |
164 | tree gfor_fndecl_sgemm; | |
165 | tree gfor_fndecl_dgemm; | |
166 | tree gfor_fndecl_cgemm; | |
167 | tree gfor_fndecl_zgemm; | |
168 | ||
6de9cd9a DN |
169 | |
170 | static void | |
171 | gfc_add_decl_to_parent_function (tree decl) | |
172 | { | |
6e45f57b | 173 | gcc_assert (decl); |
6de9cd9a DN |
174 | DECL_CONTEXT (decl) = DECL_CONTEXT (current_function_decl); |
175 | DECL_NONLOCAL (decl) = 1; | |
176 | TREE_CHAIN (decl) = saved_parent_function_decls; | |
177 | saved_parent_function_decls = decl; | |
178 | } | |
179 | ||
180 | void | |
181 | gfc_add_decl_to_function (tree decl) | |
182 | { | |
6e45f57b | 183 | gcc_assert (decl); |
6de9cd9a DN |
184 | TREE_USED (decl) = 1; |
185 | DECL_CONTEXT (decl) = current_function_decl; | |
186 | TREE_CHAIN (decl) = saved_function_decls; | |
187 | saved_function_decls = decl; | |
188 | } | |
189 | ||
9abe5e56 DK |
190 | static void |
191 | add_decl_as_local (tree decl) | |
192 | { | |
193 | gcc_assert (decl); | |
194 | TREE_USED (decl) = 1; | |
195 | DECL_CONTEXT (decl) = current_function_decl; | |
196 | TREE_CHAIN (decl) = saved_local_decls; | |
197 | saved_local_decls = decl; | |
198 | } | |
199 | ||
6de9cd9a | 200 | |
c006df4e SB |
201 | /* Build a backend label declaration. Set TREE_USED for named labels. |
202 | The context of the label is always the current_function_decl. All | |
203 | labels are marked artificial. */ | |
6de9cd9a DN |
204 | |
205 | tree | |
206 | gfc_build_label_decl (tree label_id) | |
207 | { | |
208 | /* 2^32 temporaries should be enough. */ | |
209 | static unsigned int tmp_num = 1; | |
210 | tree label_decl; | |
211 | char *label_name; | |
212 | ||
213 | if (label_id == NULL_TREE) | |
214 | { | |
215 | /* Build an internal label name. */ | |
216 | ASM_FORMAT_PRIVATE_NAME (label_name, "L", tmp_num++); | |
217 | label_id = get_identifier (label_name); | |
218 | } | |
219 | else | |
220 | label_name = NULL; | |
221 | ||
222 | /* Build the LABEL_DECL node. Labels have no type. */ | |
c2255bc4 AH |
223 | label_decl = build_decl (input_location, |
224 | LABEL_DECL, label_id, void_type_node); | |
6de9cd9a DN |
225 | DECL_CONTEXT (label_decl) = current_function_decl; |
226 | DECL_MODE (label_decl) = VOIDmode; | |
227 | ||
c006df4e SB |
228 | /* We always define the label as used, even if the original source |
229 | file never references the label. We don't want all kinds of | |
230 | spurious warnings for old-style Fortran code with too many | |
231 | labels. */ | |
232 | TREE_USED (label_decl) = 1; | |
6de9cd9a | 233 | |
c006df4e | 234 | DECL_ARTIFICIAL (label_decl) = 1; |
6de9cd9a DN |
235 | return label_decl; |
236 | } | |
237 | ||
238 | ||
239 | /* Returns the return label for the current function. */ | |
240 | ||
241 | tree | |
242 | gfc_get_return_label (void) | |
243 | { | |
244 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
245 | ||
246 | if (current_function_return_label) | |
247 | return current_function_return_label; | |
248 | ||
249 | sprintf (name, "__return_%s", | |
250 | IDENTIFIER_POINTER (DECL_NAME (current_function_decl))); | |
251 | ||
252 | current_function_return_label = | |
253 | gfc_build_label_decl (get_identifier (name)); | |
254 | ||
255 | DECL_ARTIFICIAL (current_function_return_label) = 1; | |
256 | ||
257 | return current_function_return_label; | |
258 | } | |
259 | ||
260 | ||
c8cc8542 PB |
261 | /* Set the backend source location of a decl. */ |
262 | ||
263 | void | |
264 | gfc_set_decl_location (tree decl, locus * loc) | |
265 | { | |
c8cc8542 | 266 | DECL_SOURCE_LOCATION (decl) = loc->lb->location; |
c8cc8542 PB |
267 | } |
268 | ||
269 | ||
6de9cd9a DN |
270 | /* Return the backend label declaration for a given label structure, |
271 | or create it if it doesn't exist yet. */ | |
272 | ||
273 | tree | |
274 | gfc_get_label_decl (gfc_st_label * lp) | |
275 | { | |
6de9cd9a DN |
276 | if (lp->backend_decl) |
277 | return lp->backend_decl; | |
278 | else | |
279 | { | |
280 | char label_name[GFC_MAX_SYMBOL_LEN + 1]; | |
281 | tree label_decl; | |
282 | ||
283 | /* Validate the label declaration from the front end. */ | |
6e45f57b | 284 | gcc_assert (lp != NULL && lp->value <= MAX_LABEL_VALUE); |
6de9cd9a DN |
285 | |
286 | /* Build a mangled name for the label. */ | |
287 | sprintf (label_name, "__label_%.6d", lp->value); | |
288 | ||
289 | /* Build the LABEL_DECL node. */ | |
290 | label_decl = gfc_build_label_decl (get_identifier (label_name)); | |
291 | ||
292 | /* Tell the debugger where the label came from. */ | |
f8d0aee5 | 293 | if (lp->value <= MAX_LABEL_VALUE) /* An internal label. */ |
c8cc8542 | 294 | gfc_set_decl_location (label_decl, &lp->where); |
6de9cd9a DN |
295 | else |
296 | DECL_ARTIFICIAL (label_decl) = 1; | |
297 | ||
298 | /* Store the label in the label list and return the LABEL_DECL. */ | |
299 | lp->backend_decl = label_decl; | |
300 | return label_decl; | |
301 | } | |
302 | } | |
303 | ||
304 | ||
305 | /* Convert a gfc_symbol to an identifier of the same name. */ | |
306 | ||
307 | static tree | |
308 | gfc_sym_identifier (gfc_symbol * sym) | |
309 | { | |
a7ad6c2d TB |
310 | if (sym->attr.is_main_program && strcmp (sym->name, "main") == 0) |
311 | return (get_identifier ("MAIN__")); | |
312 | else | |
313 | return (get_identifier (sym->name)); | |
6de9cd9a DN |
314 | } |
315 | ||
316 | ||
317 | /* Construct mangled name from symbol name. */ | |
318 | ||
319 | static tree | |
320 | gfc_sym_mangled_identifier (gfc_symbol * sym) | |
321 | { | |
322 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
323 | ||
a8b3b0b6 CR |
324 | /* Prevent the mangling of identifiers that have an assigned |
325 | binding label (mainly those that are bind(c)). */ | |
326 | if (sym->attr.is_bind_c == 1 | |
327 | && sym->binding_label[0] != '\0') | |
328 | return get_identifier(sym->binding_label); | |
329 | ||
cb9e4f55 | 330 | if (sym->module == NULL) |
6de9cd9a DN |
331 | return gfc_sym_identifier (sym); |
332 | else | |
333 | { | |
9998ef84 | 334 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
6de9cd9a DN |
335 | return get_identifier (name); |
336 | } | |
337 | } | |
338 | ||
339 | ||
340 | /* Construct mangled function name from symbol name. */ | |
341 | ||
342 | static tree | |
343 | gfc_sym_mangled_function_id (gfc_symbol * sym) | |
344 | { | |
345 | int has_underscore; | |
346 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
347 | ||
a8b3b0b6 CR |
348 | /* It may be possible to simply use the binding label if it's |
349 | provided, and remove the other checks. Then we could use it | |
350 | for other things if we wished. */ | |
351 | if ((sym->attr.is_bind_c == 1 || sym->attr.is_iso_c == 1) && | |
352 | sym->binding_label[0] != '\0') | |
353 | /* use the binding label rather than the mangled name */ | |
354 | return get_identifier (sym->binding_label); | |
355 | ||
cb9e4f55 | 356 | if (sym->module == NULL || sym->attr.proc == PROC_EXTERNAL |
c89686a8 PT |
357 | || (sym->module != NULL && (sym->attr.external |
358 | || sym->attr.if_source == IFSRC_IFBODY))) | |
6de9cd9a | 359 | { |
ecf24057 FXC |
360 | /* Main program is mangled into MAIN__. */ |
361 | if (sym->attr.is_main_program) | |
362 | return get_identifier ("MAIN__"); | |
363 | ||
364 | /* Intrinsic procedures are never mangled. */ | |
365 | if (sym->attr.proc == PROC_INTRINSIC) | |
6de9cd9a DN |
366 | return get_identifier (sym->name); |
367 | ||
368 | if (gfc_option.flag_underscoring) | |
369 | { | |
370 | has_underscore = strchr (sym->name, '_') != 0; | |
371 | if (gfc_option.flag_second_underscore && has_underscore) | |
372 | snprintf (name, sizeof name, "%s__", sym->name); | |
373 | else | |
374 | snprintf (name, sizeof name, "%s_", sym->name); | |
375 | return get_identifier (name); | |
376 | } | |
377 | else | |
378 | return get_identifier (sym->name); | |
379 | } | |
380 | else | |
381 | { | |
9998ef84 | 382 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
6de9cd9a DN |
383 | return get_identifier (name); |
384 | } | |
385 | } | |
386 | ||
387 | ||
43ce5e52 FXC |
388 | void |
389 | gfc_set_decl_assembler_name (tree decl, tree name) | |
390 | { | |
391 | tree target_mangled = targetm.mangle_decl_assembler_name (decl, name); | |
392 | SET_DECL_ASSEMBLER_NAME (decl, target_mangled); | |
393 | } | |
394 | ||
395 | ||
bae88af6 TS |
396 | /* Returns true if a variable of specified size should go on the stack. */ |
397 | ||
398 | int | |
399 | gfc_can_put_var_on_stack (tree size) | |
400 | { | |
401 | unsigned HOST_WIDE_INT low; | |
402 | ||
403 | if (!INTEGER_CST_P (size)) | |
404 | return 0; | |
405 | ||
406 | if (gfc_option.flag_max_stack_var_size < 0) | |
407 | return 1; | |
408 | ||
409 | if (TREE_INT_CST_HIGH (size) != 0) | |
410 | return 0; | |
411 | ||
412 | low = TREE_INT_CST_LOW (size); | |
413 | if (low > (unsigned HOST_WIDE_INT) gfc_option.flag_max_stack_var_size) | |
414 | return 0; | |
415 | ||
416 | /* TODO: Set a per-function stack size limit. */ | |
417 | ||
418 | return 1; | |
419 | } | |
420 | ||
421 | ||
b122dc6a JJ |
422 | /* gfc_finish_cray_pointee sets DECL_VALUE_EXPR for a Cray pointee to |
423 | an expression involving its corresponding pointer. There are | |
424 | 2 cases; one for variable size arrays, and one for everything else, | |
425 | because variable-sized arrays require one fewer level of | |
426 | indirection. */ | |
427 | ||
428 | static void | |
429 | gfc_finish_cray_pointee (tree decl, gfc_symbol *sym) | |
430 | { | |
431 | tree ptr_decl = gfc_get_symbol_decl (sym->cp_pointer); | |
432 | tree value; | |
433 | ||
434 | /* Parameters need to be dereferenced. */ | |
435 | if (sym->cp_pointer->attr.dummy) | |
db3927fb AH |
436 | ptr_decl = build_fold_indirect_ref_loc (input_location, |
437 | ptr_decl); | |
b122dc6a JJ |
438 | |
439 | /* Check to see if we're dealing with a variable-sized array. */ | |
440 | if (sym->attr.dimension | |
441 | && TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE) | |
442 | { | |
831d7813 | 443 | /* These decls will be dereferenced later, so we don't dereference |
b122dc6a JJ |
444 | them here. */ |
445 | value = convert (TREE_TYPE (decl), ptr_decl); | |
446 | } | |
447 | else | |
448 | { | |
449 | ptr_decl = convert (build_pointer_type (TREE_TYPE (decl)), | |
450 | ptr_decl); | |
db3927fb AH |
451 | value = build_fold_indirect_ref_loc (input_location, |
452 | ptr_decl); | |
b122dc6a JJ |
453 | } |
454 | ||
455 | SET_DECL_VALUE_EXPR (decl, value); | |
456 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
6c7a4dfd | 457 | GFC_DECL_CRAY_POINTEE (decl) = 1; |
b122dc6a JJ |
458 | /* This is a fake variable just for debugging purposes. */ |
459 | TREE_ASM_WRITTEN (decl) = 1; | |
460 | } | |
461 | ||
462 | ||
faf28b3a | 463 | /* Finish processing of a declaration without an initial value. */ |
6de9cd9a DN |
464 | |
465 | static void | |
faf28b3a | 466 | gfc_finish_decl (tree decl) |
6de9cd9a | 467 | { |
faf28b3a TS |
468 | gcc_assert (TREE_CODE (decl) == PARM_DECL |
469 | || DECL_INITIAL (decl) == NULL_TREE); | |
6de9cd9a | 470 | |
faf28b3a TS |
471 | if (TREE_CODE (decl) != VAR_DECL) |
472 | return; | |
6de9cd9a | 473 | |
faf28b3a TS |
474 | if (DECL_SIZE (decl) == NULL_TREE |
475 | && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE) | |
476 | layout_decl (decl, 0); | |
477 | ||
478 | /* A few consistency checks. */ | |
479 | /* A static variable with an incomplete type is an error if it is | |
480 | initialized. Also if it is not file scope. Otherwise, let it | |
481 | through, but if it is not `extern' then it may cause an error | |
482 | message later. */ | |
483 | /* An automatic variable with an incomplete type is an error. */ | |
484 | ||
485 | /* We should know the storage size. */ | |
486 | gcc_assert (DECL_SIZE (decl) != NULL_TREE | |
487 | || (TREE_STATIC (decl) | |
488 | ? (!DECL_INITIAL (decl) || !DECL_CONTEXT (decl)) | |
489 | : DECL_EXTERNAL (decl))); | |
490 | ||
491 | /* The storage size should be constant. */ | |
492 | gcc_assert ((!DECL_EXTERNAL (decl) && !TREE_STATIC (decl)) | |
493 | || !DECL_SIZE (decl) | |
494 | || TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST); | |
6de9cd9a DN |
495 | } |
496 | ||
497 | ||
498 | /* Apply symbol attributes to a variable, and add it to the function scope. */ | |
499 | ||
500 | static void | |
501 | gfc_finish_var_decl (tree decl, gfc_symbol * sym) | |
502 | { | |
7b901ac4 | 503 | tree new_type; |
f8d0aee5 | 504 | /* TREE_ADDRESSABLE means the address of this variable is actually needed. |
6de9cd9a DN |
505 | This is the equivalent of the TARGET variables. |
506 | We also need to set this if the variable is passed by reference in a | |
507 | CALL statement. */ | |
83d890b9 | 508 | |
b122dc6a | 509 | /* Set DECL_VALUE_EXPR for Cray Pointees. */ |
83d890b9 | 510 | if (sym->attr.cray_pointee) |
b122dc6a | 511 | gfc_finish_cray_pointee (decl, sym); |
83d890b9 | 512 | |
6de9cd9a DN |
513 | if (sym->attr.target) |
514 | TREE_ADDRESSABLE (decl) = 1; | |
515 | /* If it wasn't used we wouldn't be getting it. */ | |
516 | TREE_USED (decl) = 1; | |
517 | ||
518 | /* Chain this decl to the pending declarations. Don't do pushdecl() | |
519 | because this would add them to the current scope rather than the | |
520 | function scope. */ | |
521 | if (current_function_decl != NULL_TREE) | |
522 | { | |
d48734ef | 523 | if (sym->ns->proc_name->backend_decl == current_function_decl |
9abe5e56 | 524 | || sym->result == sym) |
6de9cd9a | 525 | gfc_add_decl_to_function (decl); |
9abe5e56 DK |
526 | else if (sym->ns->proc_name->attr.flavor == FL_LABEL) |
527 | /* This is a BLOCK construct. */ | |
528 | add_decl_as_local (decl); | |
6de9cd9a DN |
529 | else |
530 | gfc_add_decl_to_parent_function (decl); | |
531 | } | |
532 | ||
b122dc6a JJ |
533 | if (sym->attr.cray_pointee) |
534 | return; | |
535 | ||
a8b3b0b6 CR |
536 | if(sym->attr.is_bind_c == 1) |
537 | { | |
538 | /* We need to put variables that are bind(c) into the common | |
539 | segment of the object file, because this is what C would do. | |
540 | gfortran would typically put them in either the BSS or | |
541 | initialized data segments, and only mark them as common if | |
542 | they were part of common blocks. However, if they are not put | |
93c71688 | 543 | into common space, then C cannot initialize global Fortran |
a8b3b0b6 CR |
544 | variables that it interoperates with and the draft says that |
545 | either Fortran or C should be able to initialize it (but not | |
546 | both, of course.) (J3/04-007, section 15.3). */ | |
547 | TREE_PUBLIC(decl) = 1; | |
548 | DECL_COMMON(decl) = 1; | |
549 | } | |
550 | ||
6de9cd9a DN |
551 | /* If a variable is USE associated, it's always external. */ |
552 | if (sym->attr.use_assoc) | |
553 | { | |
554 | DECL_EXTERNAL (decl) = 1; | |
555 | TREE_PUBLIC (decl) = 1; | |
556 | } | |
cb9e4f55 | 557 | else if (sym->module && !sym->attr.result && !sym->attr.dummy) |
6de9cd9a | 558 | { |
adf3ed3f | 559 | /* TODO: Don't set sym->module for result or dummy variables. */ |
d48734ef | 560 | gcc_assert (current_function_decl == NULL_TREE || sym->result == sym); |
6de9cd9a DN |
561 | /* This is the declaration of a module variable. */ |
562 | TREE_PUBLIC (decl) = 1; | |
563 | TREE_STATIC (decl) = 1; | |
564 | } | |
565 | ||
b7b184a8 PT |
566 | /* Derived types are a bit peculiar because of the possibility of |
567 | a default initializer; this must be applied each time the variable | |
568 | comes into scope it therefore need not be static. These variables | |
569 | are SAVE_NONE but have an initializer. Otherwise explicitly | |
df2fba9e | 570 | initialized variables are SAVE_IMPLICIT and explicitly saved are |
b7b184a8 PT |
571 | SAVE_EXPLICIT. */ |
572 | if (!sym->attr.use_assoc | |
573 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
574 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
6de9cd9a | 575 | TREE_STATIC (decl) = 1; |
775e6c3a TB |
576 | |
577 | if (sym->attr.volatile_) | |
578 | { | |
775e6c3a | 579 | TREE_THIS_VOLATILE (decl) = 1; |
7b901ac4 KG |
580 | new_type = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE); |
581 | TREE_TYPE (decl) = new_type; | |
775e6c3a TB |
582 | } |
583 | ||
6de9cd9a DN |
584 | /* Keep variables larger than max-stack-var-size off stack. */ |
585 | if (!sym->ns->proc_name->attr.recursive | |
586 | && INTEGER_CST_P (DECL_SIZE_UNIT (decl)) | |
9eccb94d JJ |
587 | && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) |
588 | /* Put variable length auto array pointers always into stack. */ | |
589 | && (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE | |
590 | || sym->attr.dimension == 0 | |
591 | || sym->as->type != AS_EXPLICIT | |
592 | || sym->attr.pointer | |
593 | || sym->attr.allocatable) | |
594 | && !DECL_ARTIFICIAL (decl)) | |
6de9cd9a | 595 | TREE_STATIC (decl) = 1; |
6c7a4dfd JJ |
596 | |
597 | /* Handle threadprivate variables. */ | |
8893239d | 598 | if (sym->attr.threadprivate |
6c7a4dfd JJ |
599 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) |
600 | DECL_TLS_MODEL (decl) = decl_default_tls_model (decl); | |
10174ddf MM |
601 | |
602 | if (!sym->attr.target | |
603 | && !sym->attr.pointer | |
b3aefde2 | 604 | && !sym->attr.cray_pointee |
9b87db3c MM |
605 | && !sym->attr.proc_pointer) |
606 | DECL_RESTRICTED_P (decl) = 1; | |
6de9cd9a DN |
607 | } |
608 | ||
609 | ||
610 | /* Allocate the lang-specific part of a decl. */ | |
611 | ||
612 | void | |
613 | gfc_allocate_lang_decl (tree decl) | |
614 | { | |
a9429e29 LB |
615 | DECL_LANG_SPECIFIC (decl) = ggc_alloc_cleared_lang_decl(sizeof |
616 | (struct lang_decl)); | |
6de9cd9a DN |
617 | } |
618 | ||
619 | /* Remember a symbol to generate initialization/cleanup code at function | |
620 | entry/exit. */ | |
621 | ||
622 | static void | |
623 | gfc_defer_symbol_init (gfc_symbol * sym) | |
624 | { | |
625 | gfc_symbol *p; | |
626 | gfc_symbol *last; | |
627 | gfc_symbol *head; | |
628 | ||
629 | /* Don't add a symbol twice. */ | |
630 | if (sym->tlink) | |
631 | return; | |
632 | ||
633 | last = head = sym->ns->proc_name; | |
634 | p = last->tlink; | |
635 | ||
636 | /* Make sure that setup code for dummy variables which are used in the | |
637 | setup of other variables is generated first. */ | |
638 | if (sym->attr.dummy) | |
639 | { | |
640 | /* Find the first dummy arg seen after us, or the first non-dummy arg. | |
641 | This is a circular list, so don't go past the head. */ | |
642 | while (p != head | |
643 | && (!p->attr.dummy || p->dummy_order > sym->dummy_order)) | |
644 | { | |
645 | last = p; | |
646 | p = p->tlink; | |
647 | } | |
648 | } | |
649 | /* Insert in between last and p. */ | |
650 | last->tlink = sym; | |
651 | sym->tlink = p; | |
652 | } | |
653 | ||
654 | ||
655 | /* Create an array index type variable with function scope. */ | |
656 | ||
657 | static tree | |
658 | create_index_var (const char * pfx, int nest) | |
659 | { | |
660 | tree decl; | |
661 | ||
662 | decl = gfc_create_var_np (gfc_array_index_type, pfx); | |
663 | if (nest) | |
664 | gfc_add_decl_to_parent_function (decl); | |
665 | else | |
666 | gfc_add_decl_to_function (decl); | |
667 | return decl; | |
668 | } | |
669 | ||
670 | ||
671 | /* Create variables to hold all the non-constant bits of info for a | |
672 | descriptorless array. Remember these in the lang-specific part of the | |
673 | type. */ | |
674 | ||
675 | static void | |
676 | gfc_build_qualified_array (tree decl, gfc_symbol * sym) | |
677 | { | |
678 | tree type; | |
679 | int dim; | |
680 | int nest; | |
681 | ||
682 | type = TREE_TYPE (decl); | |
683 | ||
684 | /* We just use the descriptor, if there is one. */ | |
685 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
686 | return; | |
687 | ||
6e45f57b | 688 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
6de9cd9a DN |
689 | nest = (sym->ns->proc_name->backend_decl != current_function_decl) |
690 | && !sym->attr.contained; | |
691 | ||
692 | for (dim = 0; dim < GFC_TYPE_ARRAY_RANK (type); dim++) | |
693 | { | |
694 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
01306727 FXC |
695 | { |
696 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
697 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
698 | } | |
aa9c57ec | 699 | /* Don't try to use the unknown bound for assumed shape arrays. */ |
6de9cd9a DN |
700 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE |
701 | && (sym->as->type != AS_ASSUMED_SIZE | |
702 | || dim < GFC_TYPE_ARRAY_RANK (type) - 1)) | |
01306727 FXC |
703 | { |
704 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
705 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
706 | } | |
6de9cd9a DN |
707 | |
708 | if (GFC_TYPE_ARRAY_STRIDE (type, dim) == NULL_TREE) | |
01306727 FXC |
709 | { |
710 | GFC_TYPE_ARRAY_STRIDE (type, dim) = create_index_var ("stride", nest); | |
711 | TREE_NO_WARNING (GFC_TYPE_ARRAY_STRIDE (type, dim)) = 1; | |
712 | } | |
6de9cd9a DN |
713 | } |
714 | if (GFC_TYPE_ARRAY_OFFSET (type) == NULL_TREE) | |
715 | { | |
716 | GFC_TYPE_ARRAY_OFFSET (type) = gfc_create_var_np (gfc_array_index_type, | |
717 | "offset"); | |
01306727 FXC |
718 | TREE_NO_WARNING (GFC_TYPE_ARRAY_OFFSET (type)) = 1; |
719 | ||
6de9cd9a DN |
720 | if (nest) |
721 | gfc_add_decl_to_parent_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
722 | else | |
723 | gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
724 | } | |
417ab240 JJ |
725 | |
726 | if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE | |
727 | && sym->as->type != AS_ASSUMED_SIZE) | |
01306727 FXC |
728 | { |
729 | GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest); | |
730 | TREE_NO_WARNING (GFC_TYPE_ARRAY_SIZE (type)) = 1; | |
731 | } | |
417ab240 JJ |
732 | |
733 | if (POINTER_TYPE_P (type)) | |
734 | { | |
735 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type))); | |
736 | gcc_assert (TYPE_LANG_SPECIFIC (type) | |
737 | == TYPE_LANG_SPECIFIC (TREE_TYPE (type))); | |
738 | type = TREE_TYPE (type); | |
739 | } | |
740 | ||
741 | if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type)) | |
742 | { | |
743 | tree size, range; | |
744 | ||
44855d8c TS |
745 | size = fold_build2 (MINUS_EXPR, gfc_array_index_type, |
746 | GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node); | |
417ab240 JJ |
747 | range = build_range_type (gfc_array_index_type, gfc_index_zero_node, |
748 | size); | |
749 | TYPE_DOMAIN (type) = range; | |
750 | layout_type (type); | |
751 | } | |
25c29c56 | 752 | |
25c29c56 JJ |
753 | if (TYPE_NAME (type) != NULL_TREE |
754 | && GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1) != NULL_TREE | |
755 | && TREE_CODE (GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1)) == VAR_DECL) | |
756 | { | |
757 | tree gtype = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
758 | ||
759 | for (dim = 0; dim < sym->as->rank - 1; dim++) | |
760 | { | |
761 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
762 | gtype = TREE_TYPE (gtype); | |
763 | } | |
764 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
765 | if (TYPE_MAX_VALUE (TYPE_DOMAIN (gtype)) == NULL) | |
766 | TYPE_NAME (type) = NULL_TREE; | |
767 | } | |
768 | ||
769 | if (TYPE_NAME (type) == NULL_TREE) | |
770 | { | |
771 | tree gtype = TREE_TYPE (type), rtype, type_decl; | |
772 | ||
773 | for (dim = sym->as->rank - 1; dim >= 0; dim--) | |
774 | { | |
fcd3c5a9 JJ |
775 | tree lbound, ubound; |
776 | lbound = GFC_TYPE_ARRAY_LBOUND (type, dim); | |
777 | ubound = GFC_TYPE_ARRAY_UBOUND (type, dim); | |
778 | rtype = build_range_type (gfc_array_index_type, lbound, ubound); | |
25c29c56 | 779 | gtype = build_array_type (gtype, rtype); |
e429bb49 JJ |
780 | /* Ensure the bound variables aren't optimized out at -O0. |
781 | For -O1 and above they often will be optimized out, but | |
fcd3c5a9 JJ |
782 | can be tracked by VTA. Also clear the artificial |
783 | lbound.N or ubound.N DECL_NAME, so that it doesn't end up | |
784 | in debug info. */ | |
785 | if (lbound && TREE_CODE (lbound) == VAR_DECL | |
786 | && DECL_ARTIFICIAL (lbound) && DECL_IGNORED_P (lbound)) | |
787 | { | |
788 | if (DECL_NAME (lbound) | |
789 | && strstr (IDENTIFIER_POINTER (DECL_NAME (lbound)), | |
790 | "lbound") != 0) | |
791 | DECL_NAME (lbound) = NULL_TREE; | |
792 | DECL_IGNORED_P (lbound) = 0; | |
793 | } | |
794 | if (ubound && TREE_CODE (ubound) == VAR_DECL | |
795 | && DECL_ARTIFICIAL (ubound) && DECL_IGNORED_P (ubound)) | |
796 | { | |
797 | if (DECL_NAME (ubound) | |
798 | && strstr (IDENTIFIER_POINTER (DECL_NAME (ubound)), | |
799 | "ubound") != 0) | |
800 | DECL_NAME (ubound) = NULL_TREE; | |
801 | DECL_IGNORED_P (ubound) = 0; | |
802 | } | |
25c29c56 | 803 | } |
c2255bc4 AH |
804 | TYPE_NAME (type) = type_decl = build_decl (input_location, |
805 | TYPE_DECL, NULL, gtype); | |
25c29c56 JJ |
806 | DECL_ORIGINAL_TYPE (type_decl) = gtype; |
807 | } | |
6de9cd9a DN |
808 | } |
809 | ||
810 | ||
811 | /* For some dummy arguments we don't use the actual argument directly. | |
bae88af6 | 812 | Instead we create a local decl and use that. This allows us to perform |
6de9cd9a DN |
813 | initialization, and construct full type information. */ |
814 | ||
815 | static tree | |
816 | gfc_build_dummy_array_decl (gfc_symbol * sym, tree dummy) | |
817 | { | |
818 | tree decl; | |
819 | tree type; | |
820 | gfc_array_spec *as; | |
821 | char *name; | |
dcfef7d4 | 822 | gfc_packed packed; |
6de9cd9a DN |
823 | int n; |
824 | bool known_size; | |
825 | ||
826 | if (sym->attr.pointer || sym->attr.allocatable) | |
827 | return dummy; | |
828 | ||
829 | /* Add to list of variables if not a fake result variable. */ | |
830 | if (sym->attr.result || sym->attr.dummy) | |
831 | gfc_defer_symbol_init (sym); | |
832 | ||
833 | type = TREE_TYPE (dummy); | |
6e45f57b | 834 | gcc_assert (TREE_CODE (dummy) == PARM_DECL |
6de9cd9a DN |
835 | && POINTER_TYPE_P (type)); |
836 | ||
f8d0aee5 | 837 | /* Do we know the element size? */ |
6de9cd9a | 838 | known_size = sym->ts.type != BT_CHARACTER |
bc21d315 | 839 | || INTEGER_CST_P (sym->ts.u.cl->backend_decl); |
6de9cd9a DN |
840 | |
841 | if (known_size && !GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (type))) | |
842 | { | |
843 | /* For descriptorless arrays with known element size the actual | |
844 | argument is sufficient. */ | |
6e45f57b | 845 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
6de9cd9a DN |
846 | gfc_build_qualified_array (dummy, sym); |
847 | return dummy; | |
848 | } | |
849 | ||
850 | type = TREE_TYPE (type); | |
851 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
852 | { | |
fa951694 | 853 | /* Create a descriptorless array pointer. */ |
6de9cd9a | 854 | as = sym->as; |
dcfef7d4 | 855 | packed = PACKED_NO; |
1c3339af FXC |
856 | |
857 | /* Even when -frepack-arrays is used, symbols with TARGET attribute | |
858 | are not repacked. */ | |
859 | if (!gfc_option.flag_repack_arrays || sym->attr.target) | |
6de9cd9a DN |
860 | { |
861 | if (as->type == AS_ASSUMED_SIZE) | |
dcfef7d4 | 862 | packed = PACKED_FULL; |
6de9cd9a DN |
863 | } |
864 | else | |
865 | { | |
866 | if (as->type == AS_EXPLICIT) | |
867 | { | |
dcfef7d4 | 868 | packed = PACKED_FULL; |
6de9cd9a DN |
869 | for (n = 0; n < as->rank; n++) |
870 | { | |
871 | if (!(as->upper[n] | |
872 | && as->lower[n] | |
873 | && as->upper[n]->expr_type == EXPR_CONSTANT | |
874 | && as->lower[n]->expr_type == EXPR_CONSTANT)) | |
dcfef7d4 | 875 | packed = PACKED_PARTIAL; |
6de9cd9a DN |
876 | } |
877 | } | |
878 | else | |
dcfef7d4 | 879 | packed = PACKED_PARTIAL; |
6de9cd9a DN |
880 | } |
881 | ||
882 | type = gfc_typenode_for_spec (&sym->ts); | |
10174ddf MM |
883 | type = gfc_get_nodesc_array_type (type, sym->as, packed, |
884 | !sym->attr.target); | |
6de9cd9a DN |
885 | } |
886 | else | |
887 | { | |
888 | /* We now have an expression for the element size, so create a fully | |
889 | qualified type. Reset sym->backend decl or this will just return the | |
890 | old type. */ | |
3e978d30 | 891 | DECL_ARTIFICIAL (sym->backend_decl) = 1; |
6de9cd9a DN |
892 | sym->backend_decl = NULL_TREE; |
893 | type = gfc_sym_type (sym); | |
dcfef7d4 | 894 | packed = PACKED_FULL; |
6de9cd9a DN |
895 | } |
896 | ||
897 | ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0); | |
c2255bc4 AH |
898 | decl = build_decl (input_location, |
899 | VAR_DECL, get_identifier (name), type); | |
6de9cd9a DN |
900 | |
901 | DECL_ARTIFICIAL (decl) = 1; | |
902 | TREE_PUBLIC (decl) = 0; | |
903 | TREE_STATIC (decl) = 0; | |
904 | DECL_EXTERNAL (decl) = 0; | |
905 | ||
906 | /* We should never get deferred shape arrays here. We used to because of | |
907 | frontend bugs. */ | |
6e45f57b | 908 | gcc_assert (sym->as->type != AS_DEFERRED); |
6de9cd9a | 909 | |
dcfef7d4 TS |
910 | if (packed == PACKED_PARTIAL) |
911 | GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1; | |
912 | else if (packed == PACKED_FULL) | |
913 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
6de9cd9a DN |
914 | |
915 | gfc_build_qualified_array (decl, sym); | |
916 | ||
917 | if (DECL_LANG_SPECIFIC (dummy)) | |
918 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (dummy); | |
919 | else | |
920 | gfc_allocate_lang_decl (decl); | |
921 | ||
922 | GFC_DECL_SAVED_DESCRIPTOR (decl) = dummy; | |
923 | ||
924 | if (sym->ns->proc_name->backend_decl == current_function_decl | |
925 | || sym->attr.contained) | |
926 | gfc_add_decl_to_function (decl); | |
927 | else | |
928 | gfc_add_decl_to_parent_function (decl); | |
929 | ||
930 | return decl; | |
931 | } | |
932 | ||
77f2a970 JJ |
933 | /* For symbol SYM with GFC_DECL_SAVED_DESCRIPTOR used in contained |
934 | function add a VAR_DECL to the current function with DECL_VALUE_EXPR | |
935 | pointing to the artificial variable for debug info purposes. */ | |
936 | ||
937 | static void | |
938 | gfc_nonlocal_dummy_array_decl (gfc_symbol *sym) | |
939 | { | |
940 | tree decl, dummy; | |
941 | ||
942 | if (! nonlocal_dummy_decl_pset) | |
943 | nonlocal_dummy_decl_pset = pointer_set_create (); | |
944 | ||
945 | if (pointer_set_insert (nonlocal_dummy_decl_pset, sym->backend_decl)) | |
946 | return; | |
947 | ||
948 | dummy = GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl); | |
c2255bc4 | 949 | decl = build_decl (input_location, VAR_DECL, DECL_NAME (dummy), |
77f2a970 JJ |
950 | TREE_TYPE (sym->backend_decl)); |
951 | DECL_ARTIFICIAL (decl) = 0; | |
952 | TREE_USED (decl) = 1; | |
953 | TREE_PUBLIC (decl) = 0; | |
954 | TREE_STATIC (decl) = 0; | |
955 | DECL_EXTERNAL (decl) = 0; | |
956 | if (DECL_BY_REFERENCE (dummy)) | |
957 | DECL_BY_REFERENCE (decl) = 1; | |
958 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (sym->backend_decl); | |
959 | SET_DECL_VALUE_EXPR (decl, sym->backend_decl); | |
960 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
961 | DECL_CONTEXT (decl) = DECL_CONTEXT (sym->backend_decl); | |
962 | TREE_CHAIN (decl) = nonlocal_dummy_decls; | |
963 | nonlocal_dummy_decls = decl; | |
964 | } | |
6de9cd9a DN |
965 | |
966 | /* Return a constant or a variable to use as a string length. Does not | |
967 | add the decl to the current scope. */ | |
968 | ||
969 | static tree | |
970 | gfc_create_string_length (gfc_symbol * sym) | |
971 | { | |
bc21d315 JW |
972 | gcc_assert (sym->ts.u.cl); |
973 | gfc_conv_const_charlen (sym->ts.u.cl); | |
cadb8f42 | 974 | |
bc21d315 | 975 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
6de9cd9a | 976 | { |
cadb8f42 | 977 | tree length; |
6de9cd9a DN |
978 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2]; |
979 | ||
980 | /* Also prefix the mangled name. */ | |
981 | strcpy (&name[1], sym->name); | |
982 | name[0] = '.'; | |
c2255bc4 AH |
983 | length = build_decl (input_location, |
984 | VAR_DECL, get_identifier (name), | |
d7177ab2 | 985 | gfc_charlen_type_node); |
6de9cd9a DN |
986 | DECL_ARTIFICIAL (length) = 1; |
987 | TREE_USED (length) = 1; | |
417ab240 JJ |
988 | if (sym->ns->proc_name->tlink != NULL) |
989 | gfc_defer_symbol_init (sym); | |
cadb8f42 | 990 | |
bc21d315 | 991 | sym->ts.u.cl->backend_decl = length; |
6de9cd9a DN |
992 | } |
993 | ||
bc21d315 JW |
994 | gcc_assert (sym->ts.u.cl->backend_decl != NULL_TREE); |
995 | return sym->ts.u.cl->backend_decl; | |
6de9cd9a DN |
996 | } |
997 | ||
910450c1 FW |
998 | /* If a variable is assigned a label, we add another two auxiliary |
999 | variables. */ | |
1000 | ||
1001 | static void | |
1002 | gfc_add_assign_aux_vars (gfc_symbol * sym) | |
1003 | { | |
1004 | tree addr; | |
1005 | tree length; | |
1006 | tree decl; | |
1007 | ||
1008 | gcc_assert (sym->backend_decl); | |
1009 | ||
1010 | decl = sym->backend_decl; | |
1011 | gfc_allocate_lang_decl (decl); | |
1012 | GFC_DECL_ASSIGN (decl) = 1; | |
c2255bc4 AH |
1013 | length = build_decl (input_location, |
1014 | VAR_DECL, create_tmp_var_name (sym->name), | |
910450c1 | 1015 | gfc_charlen_type_node); |
c2255bc4 AH |
1016 | addr = build_decl (input_location, |
1017 | VAR_DECL, create_tmp_var_name (sym->name), | |
910450c1 FW |
1018 | pvoid_type_node); |
1019 | gfc_finish_var_decl (length, sym); | |
1020 | gfc_finish_var_decl (addr, sym); | |
1021 | /* STRING_LENGTH is also used as flag. Less than -1 means that | |
1022 | ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the | |
1023 | target label's address. Otherwise, value is the length of a format string | |
1024 | and ASSIGN_ADDR is its address. */ | |
1025 | if (TREE_STATIC (length)) | |
1026 | DECL_INITIAL (length) = build_int_cst (NULL_TREE, -2); | |
1027 | else | |
1028 | gfc_defer_symbol_init (sym); | |
1029 | ||
1030 | GFC_DECL_STRING_LEN (decl) = length; | |
1031 | GFC_DECL_ASSIGN_ADDR (decl) = addr; | |
1032 | } | |
6de9cd9a | 1033 | |
08a6b8e0 TB |
1034 | |
1035 | static tree | |
1036 | add_attributes_to_decl (symbol_attribute sym_attr, tree list) | |
1037 | { | |
1038 | unsigned id; | |
1039 | tree attr; | |
1040 | ||
1041 | for (id = 0; id < EXT_ATTR_NUM; id++) | |
1042 | if (sym_attr.ext_attr & (1 << id)) | |
1043 | { | |
1044 | attr = build_tree_list ( | |
1045 | get_identifier (ext_attr_list[id].middle_end_name), | |
1046 | NULL_TREE); | |
1047 | list = chainon (list, attr); | |
1048 | } | |
1049 | ||
1050 | return list; | |
1051 | } | |
1052 | ||
1053 | ||
6de9cd9a DN |
1054 | /* Return the decl for a gfc_symbol, create it if it doesn't already |
1055 | exist. */ | |
1056 | ||
1057 | tree | |
1058 | gfc_get_symbol_decl (gfc_symbol * sym) | |
1059 | { | |
1060 | tree decl; | |
1061 | tree length = NULL_TREE; | |
08a6b8e0 | 1062 | tree attributes; |
6de9cd9a DN |
1063 | int byref; |
1064 | ||
61321991 | 1065 | gcc_assert (sym->attr.referenced |
c60a84b8 PT |
1066 | || sym->attr.use_assoc |
1067 | || sym->ns->proc_name->attr.if_source == IFSRC_IFBODY); | |
6de9cd9a | 1068 | |
f64edc8b | 1069 | if (sym->ns && sym->ns->proc_name && sym->ns->proc_name->attr.function) |
6de9cd9a DN |
1070 | byref = gfc_return_by_reference (sym->ns->proc_name); |
1071 | else | |
1072 | byref = 0; | |
1073 | ||
eece1eb9 PT |
1074 | /* Make sure that the vtab for the declared type is completed. */ |
1075 | if (sym->ts.type == BT_CLASS) | |
1076 | { | |
7a08eda1 | 1077 | gfc_component *c = CLASS_DATA (sym); |
eece1eb9 PT |
1078 | if (!c->ts.u.derived->backend_decl) |
1079 | gfc_find_derived_vtab (c->ts.u.derived, true); | |
1080 | } | |
1081 | ||
6de9cd9a DN |
1082 | if ((sym->attr.dummy && ! sym->attr.function) || (sym->attr.result && byref)) |
1083 | { | |
1084 | /* Return via extra parameter. */ | |
1085 | if (sym->attr.result && byref | |
1086 | && !sym->backend_decl) | |
1087 | { | |
1088 | sym->backend_decl = | |
1089 | DECL_ARGUMENTS (sym->ns->proc_name->backend_decl); | |
d198b59a JJ |
1090 | /* For entry master function skip over the __entry |
1091 | argument. */ | |
1092 | if (sym->ns->proc_name->attr.entry_master) | |
1093 | sym->backend_decl = TREE_CHAIN (sym->backend_decl); | |
6de9cd9a DN |
1094 | } |
1095 | ||
1096 | /* Dummy variables should already have been created. */ | |
6e45f57b | 1097 | gcc_assert (sym->backend_decl); |
6de9cd9a DN |
1098 | |
1099 | /* Create a character length variable. */ | |
1100 | if (sym->ts.type == BT_CHARACTER) | |
1101 | { | |
bc21d315 | 1102 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
417ab240 JJ |
1103 | length = gfc_create_string_length (sym); |
1104 | else | |
bc21d315 | 1105 | length = sym->ts.u.cl->backend_decl; |
417ab240 JJ |
1106 | if (TREE_CODE (length) == VAR_DECL |
1107 | && DECL_CONTEXT (length) == NULL_TREE) | |
6de9cd9a | 1108 | { |
3e978d30 PT |
1109 | /* Add the string length to the same context as the symbol. */ |
1110 | if (DECL_CONTEXT (sym->backend_decl) == current_function_decl) | |
1111 | gfc_add_decl_to_function (length); | |
1112 | else | |
1113 | gfc_add_decl_to_parent_function (length); | |
1114 | ||
1115 | gcc_assert (DECL_CONTEXT (sym->backend_decl) == | |
1116 | DECL_CONTEXT (length)); | |
1117 | ||
417ab240 | 1118 | gfc_defer_symbol_init (sym); |
a41baa64 | 1119 | } |
6de9cd9a DN |
1120 | } |
1121 | ||
1122 | /* Use a copy of the descriptor for dummy arrays. */ | |
1123 | if (sym->attr.dimension && !TREE_USED (sym->backend_decl)) | |
1124 | { | |
3e978d30 PT |
1125 | decl = gfc_build_dummy_array_decl (sym, sym->backend_decl); |
1126 | /* Prevent the dummy from being detected as unused if it is copied. */ | |
1127 | if (sym->backend_decl != NULL && decl != sym->backend_decl) | |
1128 | DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
1129 | sym->backend_decl = decl; | |
6de9cd9a DN |
1130 | } |
1131 | ||
1132 | TREE_USED (sym->backend_decl) = 1; | |
910450c1 FW |
1133 | if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0) |
1134 | { | |
1135 | gfc_add_assign_aux_vars (sym); | |
1136 | } | |
77f2a970 JJ |
1137 | |
1138 | if (sym->attr.dimension | |
1139 | && DECL_LANG_SPECIFIC (sym->backend_decl) | |
1140 | && GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl) | |
1141 | && DECL_CONTEXT (sym->backend_decl) != current_function_decl) | |
1142 | gfc_nonlocal_dummy_array_decl (sym); | |
1143 | ||
6de9cd9a DN |
1144 | return sym->backend_decl; |
1145 | } | |
1146 | ||
1147 | if (sym->backend_decl) | |
1148 | return sym->backend_decl; | |
1149 | ||
3af8d8cb PT |
1150 | /* If use associated and whole file compilation, use the module |
1151 | declaration. This is only needed for intrinsic types because | |
1152 | they are substituted for one another during optimization. */ | |
1153 | if (gfc_option.flag_whole_file | |
1154 | && sym->attr.flavor == FL_VARIABLE | |
1155 | && sym->ts.type != BT_DERIVED | |
1156 | && sym->attr.use_assoc | |
1157 | && sym->module) | |
1158 | { | |
1159 | gfc_gsymbol *gsym; | |
1160 | ||
1161 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
1162 | if (gsym && gsym->ns && gsym->type == GSYM_MODULE) | |
1163 | { | |
1164 | gfc_symbol *s; | |
1165 | s = NULL; | |
1166 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
1167 | if (s && s->backend_decl) | |
1168 | { | |
1169 | if (sym->ts.type == BT_CHARACTER) | |
bc21d315 | 1170 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; |
3af8d8cb PT |
1171 | return s->backend_decl; |
1172 | } | |
1173 | } | |
1174 | } | |
1175 | ||
13d138bf JW |
1176 | /* Catch function declarations. Only used for actual parameters and |
1177 | procedure pointers. */ | |
6de9cd9a DN |
1178 | if (sym->attr.flavor == FL_PROCEDURE) |
1179 | { | |
1180 | decl = gfc_get_extern_function_decl (sym); | |
13d138bf | 1181 | gfc_set_decl_location (decl, &sym->declared_at); |
6de9cd9a DN |
1182 | return decl; |
1183 | } | |
1184 | ||
1185 | if (sym->attr.intrinsic) | |
1186 | internal_error ("intrinsic variable which isn't a procedure"); | |
1187 | ||
1188 | /* Create string length decl first so that they can be used in the | |
1189 | type declaration. */ | |
1190 | if (sym->ts.type == BT_CHARACTER) | |
1191 | length = gfc_create_string_length (sym); | |
1192 | ||
1193 | /* Create the decl for the variable. */ | |
c2255bc4 AH |
1194 | decl = build_decl (sym->declared_at.lb->location, |
1195 | VAR_DECL, gfc_sym_identifier (sym), gfc_sym_type (sym)); | |
c8cc8542 | 1196 | |
43ce5e52 FXC |
1197 | /* Add attributes to variables. Functions are handled elsewhere. */ |
1198 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); | |
1199 | decl_attributes (&decl, attributes, 0); | |
1200 | ||
f8d0aee5 | 1201 | /* Symbols from modules should have their assembler names mangled. |
6de9cd9a DN |
1202 | This is done here rather than in gfc_finish_var_decl because it |
1203 | is different for string length variables. */ | |
cb9e4f55 | 1204 | if (sym->module) |
a64f5186 | 1205 | { |
43ce5e52 | 1206 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); |
a64f5186 JJ |
1207 | if (sym->attr.use_assoc) |
1208 | DECL_IGNORED_P (decl) = 1; | |
1209 | } | |
6de9cd9a DN |
1210 | |
1211 | if (sym->attr.dimension) | |
1212 | { | |
1213 | /* Create variables to hold the non-constant bits of array info. */ | |
1214 | gfc_build_qualified_array (decl, sym); | |
1215 | ||
fe4e525c TB |
1216 | if (sym->attr.contiguous |
1217 | || ((sym->attr.allocatable || !sym->attr.dummy) && !sym->attr.pointer)) | |
6de9cd9a DN |
1218 | GFC_DECL_PACKED_ARRAY (decl) = 1; |
1219 | } | |
1220 | ||
1517fd57 JW |
1221 | /* Remember this variable for allocation/cleanup. */ |
1222 | if (sym->attr.dimension || sym->attr.allocatable | |
1223 | || (sym->ts.type == BT_CLASS && | |
7a08eda1 JW |
1224 | (CLASS_DATA (sym)->attr.dimension |
1225 | || CLASS_DATA (sym)->attr.allocatable)) | |
1517fd57 JW |
1226 | || (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
1227 | /* This applies a derived type default initializer. */ | |
1228 | || (sym->ts.type == BT_DERIVED | |
1229 | && sym->attr.save == SAVE_NONE | |
1230 | && !sym->attr.data | |
1231 | && !sym->attr.allocatable | |
1232 | && (sym->value && !sym->ns->proc_name->attr.is_main_program) | |
1233 | && !sym->attr.use_assoc)) | |
b7b184a8 | 1234 | gfc_defer_symbol_init (sym); |
5046aff5 | 1235 | |
6de9cd9a DN |
1236 | gfc_finish_var_decl (decl, sym); |
1237 | ||
597073ac | 1238 | if (sym->ts.type == BT_CHARACTER) |
6de9cd9a | 1239 | { |
6de9cd9a DN |
1240 | /* Character variables need special handling. */ |
1241 | gfc_allocate_lang_decl (decl); | |
1242 | ||
597073ac | 1243 | if (TREE_CODE (length) != INTEGER_CST) |
6de9cd9a DN |
1244 | { |
1245 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2]; | |
1246 | ||
cb9e4f55 | 1247 | if (sym->module) |
6de9cd9a DN |
1248 | { |
1249 | /* Also prefix the mangled name for symbols from modules. */ | |
1250 | strcpy (&name[1], sym->name); | |
1251 | name[0] = '.'; | |
1252 | strcpy (&name[1], | |
1253 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (length))); | |
43ce5e52 | 1254 | gfc_set_decl_assembler_name (decl, get_identifier (name)); |
6de9cd9a DN |
1255 | } |
1256 | gfc_finish_var_decl (length, sym); | |
6e45f57b | 1257 | gcc_assert (!sym->value); |
6de9cd9a | 1258 | } |
6de9cd9a | 1259 | } |
1d6b7f39 PT |
1260 | else if (sym->attr.subref_array_pointer) |
1261 | { | |
1262 | /* We need the span for these beasts. */ | |
1263 | gfc_allocate_lang_decl (decl); | |
1264 | } | |
1265 | ||
1266 | if (sym->attr.subref_array_pointer) | |
1267 | { | |
1268 | tree span; | |
1269 | GFC_DECL_SUBREF_ARRAY_P (decl) = 1; | |
c2255bc4 AH |
1270 | span = build_decl (input_location, |
1271 | VAR_DECL, create_tmp_var_name ("span"), | |
1d6b7f39 PT |
1272 | gfc_array_index_type); |
1273 | gfc_finish_var_decl (span, sym); | |
de870512 JJ |
1274 | TREE_STATIC (span) = TREE_STATIC (decl); |
1275 | DECL_ARTIFICIAL (span) = 1; | |
1276 | DECL_INITIAL (span) = build_int_cst (gfc_array_index_type, 0); | |
1d6b7f39 PT |
1277 | |
1278 | GFC_DECL_SPAN (decl) = span; | |
de870512 | 1279 | GFC_TYPE_ARRAY_SPAN (TREE_TYPE (decl)) = span; |
1d6b7f39 PT |
1280 | } |
1281 | ||
6de9cd9a DN |
1282 | sym->backend_decl = decl; |
1283 | ||
910450c1 | 1284 | if (sym->attr.assign) |
6c0e51c4 | 1285 | gfc_add_assign_aux_vars (sym); |
910450c1 | 1286 | |
2b56d6a4 TB |
1287 | if (TREE_STATIC (decl) && !sym->attr.use_assoc |
1288 | && (sym->attr.save || sym->ns->proc_name->attr.is_main_program | |
1289 | || gfc_option.flag_max_stack_var_size == 0 | |
1290 | || sym->attr.data || sym->ns->proc_name->attr.flavor == FL_MODULE)) | |
1291 | { | |
1292 | /* Add static initializer. For procedures, it is only needed if | |
1293 | SAVE is specified otherwise they need to be reinitialized | |
1294 | every time the procedure is entered. The TREE_STATIC is | |
1295 | in this case due to -fmax-stack-var-size=. */ | |
597073ac PB |
1296 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
1297 | TREE_TYPE (decl), sym->attr.dimension, | |
1298 | sym->attr.pointer || sym->attr.allocatable); | |
1299 | } | |
1300 | ||
77f2a970 JJ |
1301 | if (!TREE_STATIC (decl) |
1302 | && POINTER_TYPE_P (TREE_TYPE (decl)) | |
1303 | && !sym->attr.pointer | |
1304 | && !sym->attr.allocatable | |
1305 | && !sym->attr.proc_pointer) | |
1306 | DECL_BY_REFERENCE (decl) = 1; | |
1307 | ||
6de9cd9a DN |
1308 | return decl; |
1309 | } | |
1310 | ||
1311 | ||
7b5b57b7 PB |
1312 | /* Substitute a temporary variable in place of the real one. */ |
1313 | ||
1314 | void | |
1315 | gfc_shadow_sym (gfc_symbol * sym, tree decl, gfc_saved_var * save) | |
1316 | { | |
1317 | save->attr = sym->attr; | |
1318 | save->decl = sym->backend_decl; | |
1319 | ||
1320 | gfc_clear_attr (&sym->attr); | |
1321 | sym->attr.referenced = 1; | |
1322 | sym->attr.flavor = FL_VARIABLE; | |
1323 | ||
1324 | sym->backend_decl = decl; | |
1325 | } | |
1326 | ||
1327 | ||
1328 | /* Restore the original variable. */ | |
1329 | ||
1330 | void | |
1331 | gfc_restore_sym (gfc_symbol * sym, gfc_saved_var * save) | |
1332 | { | |
1333 | sym->attr = save->attr; | |
1334 | sym->backend_decl = save->decl; | |
1335 | } | |
1336 | ||
1337 | ||
8fb74da4 JW |
1338 | /* Declare a procedure pointer. */ |
1339 | ||
1340 | static tree | |
1341 | get_proc_pointer_decl (gfc_symbol *sym) | |
1342 | { | |
1343 | tree decl; | |
08a6b8e0 | 1344 | tree attributes; |
8fb74da4 JW |
1345 | |
1346 | decl = sym->backend_decl; | |
1347 | if (decl) | |
1348 | return decl; | |
1349 | ||
c2255bc4 AH |
1350 | decl = build_decl (input_location, |
1351 | VAR_DECL, get_identifier (sym->name), | |
8fb74da4 JW |
1352 | build_pointer_type (gfc_get_function_type (sym))); |
1353 | ||
06c7153f TB |
1354 | if ((sym->ns->proc_name |
1355 | && sym->ns->proc_name->backend_decl == current_function_decl) | |
8fb74da4 JW |
1356 | || sym->attr.contained) |
1357 | gfc_add_decl_to_function (decl); | |
6e0d2de7 | 1358 | else if (sym->ns->proc_name->attr.flavor != FL_MODULE) |
8fb74da4 JW |
1359 | gfc_add_decl_to_parent_function (decl); |
1360 | ||
1361 | sym->backend_decl = decl; | |
1362 | ||
6e0d2de7 JW |
1363 | /* If a variable is USE associated, it's always external. */ |
1364 | if (sym->attr.use_assoc) | |
1365 | { | |
1366 | DECL_EXTERNAL (decl) = 1; | |
1367 | TREE_PUBLIC (decl) = 1; | |
1368 | } | |
1369 | else if (sym->module && sym->ns->proc_name->attr.flavor == FL_MODULE) | |
1370 | { | |
1371 | /* This is the declaration of a module variable. */ | |
1372 | TREE_PUBLIC (decl) = 1; | |
1373 | TREE_STATIC (decl) = 1; | |
1374 | } | |
1375 | ||
8fb74da4 JW |
1376 | if (!sym->attr.use_assoc |
1377 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
1378 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
1379 | TREE_STATIC (decl) = 1; | |
1380 | ||
1381 | if (TREE_STATIC (decl) && sym->value) | |
1382 | { | |
1383 | /* Add static initializer. */ | |
1384 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
2a3c437d TB |
1385 | TREE_TYPE (decl), |
1386 | sym->attr.proc_pointer ? false : sym->attr.dimension, | |
1387 | sym->attr.proc_pointer); | |
8fb74da4 JW |
1388 | } |
1389 | ||
08a6b8e0 TB |
1390 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1391 | decl_attributes (&decl, attributes, 0); | |
1392 | ||
8fb74da4 JW |
1393 | return decl; |
1394 | } | |
1395 | ||
1396 | ||
6de9cd9a DN |
1397 | /* Get a basic decl for an external function. */ |
1398 | ||
1399 | tree | |
1400 | gfc_get_extern_function_decl (gfc_symbol * sym) | |
1401 | { | |
1402 | tree type; | |
1403 | tree fndecl; | |
08a6b8e0 | 1404 | tree attributes; |
6de9cd9a DN |
1405 | gfc_expr e; |
1406 | gfc_intrinsic_sym *isym; | |
1407 | gfc_expr argexpr; | |
e6472bce | 1408 | char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */ |
6de9cd9a DN |
1409 | tree name; |
1410 | tree mangled_name; | |
71a7778c | 1411 | gfc_gsymbol *gsym; |
6de9cd9a DN |
1412 | |
1413 | if (sym->backend_decl) | |
1414 | return sym->backend_decl; | |
1415 | ||
3d79abbd PB |
1416 | /* We should never be creating external decls for alternate entry points. |
1417 | The procedure may be an alternate entry point, but we don't want/need | |
1418 | to know that. */ | |
6e45f57b | 1419 | gcc_assert (!(sym->attr.entry || sym->attr.entry_master)); |
3d79abbd | 1420 | |
8fb74da4 JW |
1421 | if (sym->attr.proc_pointer) |
1422 | return get_proc_pointer_decl (sym); | |
1423 | ||
71a7778c PT |
1424 | /* See if this is an external procedure from the same file. If so, |
1425 | return the backend_decl. */ | |
1426 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->name); | |
1427 | ||
1428 | if (gfc_option.flag_whole_file | |
3af8d8cb | 1429 | && !sym->attr.use_assoc |
71a7778c PT |
1430 | && !sym->backend_decl |
1431 | && gsym && gsym->ns | |
1432 | && ((gsym->type == GSYM_SUBROUTINE) || (gsym->type == GSYM_FUNCTION)) | |
1433 | && gsym->ns->proc_name->backend_decl) | |
1434 | { | |
1435 | /* If the namespace has entries, the proc_name is the | |
1436 | entry master. Find the entry and use its backend_decl. | |
1437 | otherwise, use the proc_name backend_decl. */ | |
1438 | if (gsym->ns->entries) | |
1439 | { | |
1440 | gfc_entry_list *entry = gsym->ns->entries; | |
1441 | ||
1442 | for (; entry; entry = entry->next) | |
1443 | { | |
1444 | if (strcmp (gsym->name, entry->sym->name) == 0) | |
1445 | { | |
1446 | sym->backend_decl = entry->sym->backend_decl; | |
1447 | break; | |
1448 | } | |
1449 | } | |
1450 | } | |
1451 | else | |
1452 | { | |
1453 | sym->backend_decl = gsym->ns->proc_name->backend_decl; | |
1454 | } | |
1455 | ||
1456 | if (sym->backend_decl) | |
1457 | return sym->backend_decl; | |
1458 | } | |
1459 | ||
3af8d8cb PT |
1460 | /* See if this is a module procedure from the same file. If so, |
1461 | return the backend_decl. */ | |
1462 | if (sym->module) | |
1463 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
1464 | ||
1465 | if (gfc_option.flag_whole_file | |
1466 | && gsym && gsym->ns | |
1467 | && gsym->type == GSYM_MODULE) | |
1468 | { | |
1469 | gfc_symbol *s; | |
1470 | ||
1471 | s = NULL; | |
1472 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
1473 | if (s && s->backend_decl) | |
1474 | { | |
1475 | sym->backend_decl = s->backend_decl; | |
1476 | return sym->backend_decl; | |
1477 | } | |
1478 | } | |
1479 | ||
6de9cd9a DN |
1480 | if (sym->attr.intrinsic) |
1481 | { | |
1482 | /* Call the resolution function to get the actual name. This is | |
1483 | a nasty hack which relies on the resolution functions only looking | |
1484 | at the first argument. We pass NULL for the second argument | |
1485 | otherwise things like AINT get confused. */ | |
1486 | isym = gfc_find_function (sym->name); | |
6e45f57b | 1487 | gcc_assert (isym->resolve.f0 != NULL); |
6de9cd9a DN |
1488 | |
1489 | memset (&e, 0, sizeof (e)); | |
1490 | e.expr_type = EXPR_FUNCTION; | |
1491 | ||
1492 | memset (&argexpr, 0, sizeof (argexpr)); | |
6e45f57b | 1493 | gcc_assert (isym->formal); |
6de9cd9a DN |
1494 | argexpr.ts = isym->formal->ts; |
1495 | ||
1496 | if (isym->formal->next == NULL) | |
1497 | isym->resolve.f1 (&e, &argexpr); | |
1498 | else | |
1499 | { | |
0e7e7e6e FXC |
1500 | if (isym->formal->next->next == NULL) |
1501 | isym->resolve.f2 (&e, &argexpr, NULL); | |
1502 | else | |
1503 | { | |
5cda5098 FXC |
1504 | if (isym->formal->next->next->next == NULL) |
1505 | isym->resolve.f3 (&e, &argexpr, NULL, NULL); | |
1506 | else | |
1507 | { | |
1508 | /* All specific intrinsics take less than 5 arguments. */ | |
1509 | gcc_assert (isym->formal->next->next->next->next == NULL); | |
1510 | isym->resolve.f4 (&e, &argexpr, NULL, NULL, NULL); | |
1511 | } | |
0e7e7e6e | 1512 | } |
6de9cd9a | 1513 | } |
973ff4c0 TS |
1514 | |
1515 | if (gfc_option.flag_f2c | |
1516 | && ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind) | |
1517 | || e.ts.type == BT_COMPLEX)) | |
1518 | { | |
1519 | /* Specific which needs a different implementation if f2c | |
1520 | calling conventions are used. */ | |
e6472bce | 1521 | sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name); |
973ff4c0 TS |
1522 | } |
1523 | else | |
e6472bce | 1524 | sprintf (s, "_gfortran_specific%s", e.value.function.name); |
973ff4c0 | 1525 | |
6de9cd9a DN |
1526 | name = get_identifier (s); |
1527 | mangled_name = name; | |
1528 | } | |
1529 | else | |
1530 | { | |
1531 | name = gfc_sym_identifier (sym); | |
1532 | mangled_name = gfc_sym_mangled_function_id (sym); | |
1533 | } | |
1534 | ||
1535 | type = gfc_get_function_type (sym); | |
c2255bc4 AH |
1536 | fndecl = build_decl (input_location, |
1537 | FUNCTION_DECL, name, type); | |
6de9cd9a | 1538 | |
43ce5e52 FXC |
1539 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1540 | decl_attributes (&fndecl, attributes, 0); | |
1541 | ||
1542 | gfc_set_decl_assembler_name (fndecl, mangled_name); | |
6de9cd9a DN |
1543 | |
1544 | /* Set the context of this decl. */ | |
1545 | if (0 && sym->ns && sym->ns->proc_name) | |
1546 | { | |
1547 | /* TODO: Add external decls to the appropriate scope. */ | |
1548 | DECL_CONTEXT (fndecl) = sym->ns->proc_name->backend_decl; | |
1549 | } | |
1550 | else | |
1551 | { | |
f8d0aee5 | 1552 | /* Global declaration, e.g. intrinsic subroutine. */ |
6de9cd9a DN |
1553 | DECL_CONTEXT (fndecl) = NULL_TREE; |
1554 | } | |
1555 | ||
1556 | DECL_EXTERNAL (fndecl) = 1; | |
1557 | ||
f8d0aee5 | 1558 | /* This specifies if a function is globally addressable, i.e. it is |
6de9cd9a DN |
1559 | the opposite of declaring static in C. */ |
1560 | TREE_PUBLIC (fndecl) = 1; | |
1561 | ||
1562 | /* Set attributes for PURE functions. A call to PURE function in the | |
1563 | Fortran 95 sense is both pure and without side effects in the C | |
1564 | sense. */ | |
1565 | if (sym->attr.pure || sym->attr.elemental) | |
1566 | { | |
cf013e9f | 1567 | if (sym->attr.function && !gfc_return_by_reference (sym)) |
becfd6e5 | 1568 | DECL_PURE_P (fndecl) = 1; |
b7e6a6b3 TS |
1569 | /* TODO: check if pure SUBROUTINEs don't have INTENT(OUT) |
1570 | parameters and don't use alternate returns (is this | |
1571 | allowed?). In that case, calls to them are meaningless, and | |
3d79abbd | 1572 | can be optimized away. See also in build_function_decl(). */ |
b7e6a6b3 | 1573 | TREE_SIDE_EFFECTS (fndecl) = 0; |
6de9cd9a DN |
1574 | } |
1575 | ||
fe58e076 TK |
1576 | /* Mark non-returning functions. */ |
1577 | if (sym->attr.noreturn) | |
1578 | TREE_THIS_VOLATILE(fndecl) = 1; | |
1579 | ||
6de9cd9a DN |
1580 | sym->backend_decl = fndecl; |
1581 | ||
1582 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1583 | pushdecl_top_level (fndecl); | |
1584 | ||
1585 | return fndecl; | |
1586 | } | |
1587 | ||
1588 | ||
1589 | /* Create a declaration for a procedure. For external functions (in the C | |
3d79abbd PB |
1590 | sense) use gfc_get_extern_function_decl. HAS_ENTRIES is true if this is |
1591 | a master function with alternate entry points. */ | |
6de9cd9a | 1592 | |
3d79abbd PB |
1593 | static void |
1594 | build_function_decl (gfc_symbol * sym) | |
6de9cd9a | 1595 | { |
08a6b8e0 | 1596 | tree fndecl, type, attributes; |
6de9cd9a | 1597 | symbol_attribute attr; |
3d79abbd | 1598 | tree result_decl; |
6de9cd9a DN |
1599 | gfc_formal_arglist *f; |
1600 | ||
6e45f57b PB |
1601 | gcc_assert (!sym->backend_decl); |
1602 | gcc_assert (!sym->attr.external); | |
6de9cd9a | 1603 | |
c8cc8542 PB |
1604 | /* Set the line and filename. sym->declared_at seems to point to the |
1605 | last statement for subroutines, but it'll do for now. */ | |
1606 | gfc_set_backend_locus (&sym->declared_at); | |
1607 | ||
6de9cd9a | 1608 | /* Allow only one nesting level. Allow public declarations. */ |
6e45f57b | 1609 | gcc_assert (current_function_decl == NULL_TREE |
a64f5186 JJ |
1610 | || DECL_CONTEXT (current_function_decl) == NULL_TREE |
1611 | || TREE_CODE (DECL_CONTEXT (current_function_decl)) | |
1612 | == NAMESPACE_DECL); | |
6de9cd9a DN |
1613 | |
1614 | type = gfc_get_function_type (sym); | |
c2255bc4 AH |
1615 | fndecl = build_decl (input_location, |
1616 | FUNCTION_DECL, gfc_sym_identifier (sym), type); | |
6de9cd9a | 1617 | |
43ce5e52 FXC |
1618 | attr = sym->attr; |
1619 | ||
1620 | attributes = add_attributes_to_decl (attr, NULL_TREE); | |
1621 | decl_attributes (&fndecl, attributes, 0); | |
1622 | ||
6de9cd9a DN |
1623 | /* Perform name mangling if this is a top level or module procedure. */ |
1624 | if (current_function_decl == NULL_TREE) | |
43ce5e52 | 1625 | gfc_set_decl_assembler_name (fndecl, gfc_sym_mangled_function_id (sym)); |
6de9cd9a DN |
1626 | |
1627 | /* Figure out the return type of the declared function, and build a | |
f8d0aee5 | 1628 | RESULT_DECL for it. If this is a subroutine with alternate |
6de9cd9a | 1629 | returns, build a RESULT_DECL for it. */ |
6de9cd9a DN |
1630 | result_decl = NULL_TREE; |
1631 | /* TODO: Shouldn't this just be TREE_TYPE (TREE_TYPE (fndecl)). */ | |
1632 | if (attr.function) | |
1633 | { | |
1634 | if (gfc_return_by_reference (sym)) | |
1635 | type = void_type_node; | |
1636 | else | |
1637 | { | |
1638 | if (sym->result != sym) | |
1639 | result_decl = gfc_sym_identifier (sym->result); | |
1640 | ||
1641 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
1642 | } | |
1643 | } | |
1644 | else | |
1645 | { | |
1646 | /* Look for alternate return placeholders. */ | |
1647 | int has_alternate_returns = 0; | |
1648 | for (f = sym->formal; f; f = f->next) | |
1649 | { | |
1650 | if (f->sym == NULL) | |
1651 | { | |
1652 | has_alternate_returns = 1; | |
1653 | break; | |
1654 | } | |
1655 | } | |
1656 | ||
1657 | if (has_alternate_returns) | |
1658 | type = integer_type_node; | |
1659 | else | |
1660 | type = void_type_node; | |
1661 | } | |
1662 | ||
c2255bc4 AH |
1663 | result_decl = build_decl (input_location, |
1664 | RESULT_DECL, result_decl, type); | |
b785f485 RH |
1665 | DECL_ARTIFICIAL (result_decl) = 1; |
1666 | DECL_IGNORED_P (result_decl) = 1; | |
6de9cd9a DN |
1667 | DECL_CONTEXT (result_decl) = fndecl; |
1668 | DECL_RESULT (fndecl) = result_decl; | |
1669 | ||
1670 | /* Don't call layout_decl for a RESULT_DECL. | |
f8d0aee5 | 1671 | layout_decl (result_decl, 0); */ |
6de9cd9a | 1672 | |
6de9cd9a DN |
1673 | /* Set up all attributes for the function. */ |
1674 | DECL_CONTEXT (fndecl) = current_function_decl; | |
1675 | DECL_EXTERNAL (fndecl) = 0; | |
1676 | ||
ae51017b | 1677 | /* This specifies if a function is globally visible, i.e. it is |
472ca416 | 1678 | the opposite of declaring static in C. */ |
3d79abbd | 1679 | if (DECL_CONTEXT (fndecl) == NULL_TREE |
092231a8 | 1680 | && !sym->attr.entry_master && !sym->attr.is_main_program) |
6de9cd9a DN |
1681 | TREE_PUBLIC (fndecl) = 1; |
1682 | ||
1683 | /* TREE_STATIC means the function body is defined here. */ | |
1d754240 | 1684 | TREE_STATIC (fndecl) = 1; |
6de9cd9a | 1685 | |
f8d0aee5 | 1686 | /* Set attributes for PURE functions. A call to a PURE function in the |
6de9cd9a DN |
1687 | Fortran 95 sense is both pure and without side effects in the C |
1688 | sense. */ | |
1689 | if (attr.pure || attr.elemental) | |
1690 | { | |
b7e6a6b3 | 1691 | /* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments |
86bf520d | 1692 | including an alternate return. In that case it can also be |
1f2959f0 | 1693 | marked as PURE. See also in gfc_get_extern_function_decl(). */ |
a01db3bf | 1694 | if (attr.function && !gfc_return_by_reference (sym)) |
becfd6e5 | 1695 | DECL_PURE_P (fndecl) = 1; |
6de9cd9a DN |
1696 | TREE_SIDE_EFFECTS (fndecl) = 0; |
1697 | } | |
1698 | ||
08a6b8e0 | 1699 | |
6de9cd9a DN |
1700 | /* Layout the function declaration and put it in the binding level |
1701 | of the current function. */ | |
1d754240 | 1702 | pushdecl (fndecl); |
3d79abbd PB |
1703 | |
1704 | sym->backend_decl = fndecl; | |
1705 | } | |
1706 | ||
1707 | ||
1708 | /* Create the DECL_ARGUMENTS for a procedure. */ | |
1709 | ||
1710 | static void | |
1711 | create_function_arglist (gfc_symbol * sym) | |
1712 | { | |
1713 | tree fndecl; | |
1714 | gfc_formal_arglist *f; | |
417ab240 JJ |
1715 | tree typelist, hidden_typelist; |
1716 | tree arglist, hidden_arglist; | |
3d79abbd PB |
1717 | tree type; |
1718 | tree parm; | |
1719 | ||
1720 | fndecl = sym->backend_decl; | |
1721 | ||
1d754240 PB |
1722 | /* Build formal argument list. Make sure that their TREE_CONTEXT is |
1723 | the new FUNCTION_DECL node. */ | |
1d754240 | 1724 | arglist = NULL_TREE; |
417ab240 | 1725 | hidden_arglist = NULL_TREE; |
1d754240 | 1726 | typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
3d79abbd PB |
1727 | |
1728 | if (sym->attr.entry_master) | |
1729 | { | |
1730 | type = TREE_VALUE (typelist); | |
c2255bc4 AH |
1731 | parm = build_decl (input_location, |
1732 | PARM_DECL, get_identifier ("__entry"), type); | |
3d79abbd PB |
1733 | |
1734 | DECL_CONTEXT (parm) = fndecl; | |
1735 | DECL_ARG_TYPE (parm) = type; | |
1736 | TREE_READONLY (parm) = 1; | |
faf28b3a | 1737 | gfc_finish_decl (parm); |
3e978d30 | 1738 | DECL_ARTIFICIAL (parm) = 1; |
3d79abbd PB |
1739 | |
1740 | arglist = chainon (arglist, parm); | |
1741 | typelist = TREE_CHAIN (typelist); | |
1742 | } | |
1743 | ||
1d754240 | 1744 | if (gfc_return_by_reference (sym)) |
6de9cd9a | 1745 | { |
417ab240 | 1746 | tree type = TREE_VALUE (typelist), length = NULL; |
6de9cd9a | 1747 | |
1d754240 PB |
1748 | if (sym->ts.type == BT_CHARACTER) |
1749 | { | |
1d754240 | 1750 | /* Length of character result. */ |
417ab240 JJ |
1751 | tree len_type = TREE_VALUE (TREE_CHAIN (typelist)); |
1752 | gcc_assert (len_type == gfc_charlen_type_node); | |
6de9cd9a | 1753 | |
c2255bc4 AH |
1754 | length = build_decl (input_location, |
1755 | PARM_DECL, | |
1d754240 | 1756 | get_identifier (".__result"), |
417ab240 | 1757 | len_type); |
bc21d315 | 1758 | if (!sym->ts.u.cl->length) |
1d754240 | 1759 | { |
bc21d315 | 1760 | sym->ts.u.cl->backend_decl = length; |
1d754240 | 1761 | TREE_USED (length) = 1; |
6de9cd9a | 1762 | } |
6e45f57b | 1763 | gcc_assert (TREE_CODE (length) == PARM_DECL); |
1d754240 | 1764 | DECL_CONTEXT (length) = fndecl; |
417ab240 | 1765 | DECL_ARG_TYPE (length) = len_type; |
1d754240 | 1766 | TREE_READONLY (length) = 1; |
ca0e9281 | 1767 | DECL_ARTIFICIAL (length) = 1; |
faf28b3a | 1768 | gfc_finish_decl (length); |
bc21d315 JW |
1769 | if (sym->ts.u.cl->backend_decl == NULL |
1770 | || sym->ts.u.cl->backend_decl == length) | |
417ab240 JJ |
1771 | { |
1772 | gfc_symbol *arg; | |
1773 | tree backend_decl; | |
6de9cd9a | 1774 | |
bc21d315 | 1775 | if (sym->ts.u.cl->backend_decl == NULL) |
417ab240 | 1776 | { |
c2255bc4 AH |
1777 | tree len = build_decl (input_location, |
1778 | VAR_DECL, | |
417ab240 JJ |
1779 | get_identifier ("..__result"), |
1780 | gfc_charlen_type_node); | |
1781 | DECL_ARTIFICIAL (len) = 1; | |
1782 | TREE_USED (len) = 1; | |
bc21d315 | 1783 | sym->ts.u.cl->backend_decl = len; |
417ab240 | 1784 | } |
6de9cd9a | 1785 | |
417ab240 JJ |
1786 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ |
1787 | arg = sym->result ? sym->result : sym; | |
1788 | backend_decl = arg->backend_decl; | |
1789 | /* Temporary clear it, so that gfc_sym_type creates complete | |
1790 | type. */ | |
1791 | arg->backend_decl = NULL; | |
1792 | type = gfc_sym_type (arg); | |
1793 | arg->backend_decl = backend_decl; | |
1794 | type = build_reference_type (type); | |
1795 | } | |
1796 | } | |
6de9cd9a | 1797 | |
c2255bc4 AH |
1798 | parm = build_decl (input_location, |
1799 | PARM_DECL, get_identifier ("__result"), type); | |
6de9cd9a | 1800 | |
417ab240 JJ |
1801 | DECL_CONTEXT (parm) = fndecl; |
1802 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
1803 | TREE_READONLY (parm) = 1; | |
1804 | DECL_ARTIFICIAL (parm) = 1; | |
faf28b3a | 1805 | gfc_finish_decl (parm); |
6de9cd9a | 1806 | |
417ab240 JJ |
1807 | arglist = chainon (arglist, parm); |
1808 | typelist = TREE_CHAIN (typelist); | |
6de9cd9a | 1809 | |
417ab240 JJ |
1810 | if (sym->ts.type == BT_CHARACTER) |
1811 | { | |
1812 | gfc_allocate_lang_decl (parm); | |
1813 | arglist = chainon (arglist, length); | |
1d754240 PB |
1814 | typelist = TREE_CHAIN (typelist); |
1815 | } | |
1816 | } | |
6de9cd9a | 1817 | |
417ab240 JJ |
1818 | hidden_typelist = typelist; |
1819 | for (f = sym->formal; f; f = f->next) | |
1820 | if (f->sym != NULL) /* Ignore alternate returns. */ | |
1821 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
1822 | ||
1d754240 PB |
1823 | for (f = sym->formal; f; f = f->next) |
1824 | { | |
1825 | char name[GFC_MAX_SYMBOL_LEN + 2]; | |
417ab240 | 1826 | |
1d754240 PB |
1827 | /* Ignore alternate returns. */ |
1828 | if (f->sym == NULL) | |
1829 | continue; | |
6de9cd9a | 1830 | |
1d754240 | 1831 | type = TREE_VALUE (typelist); |
6de9cd9a | 1832 | |
33215bb3 TB |
1833 | if (f->sym->ts.type == BT_CHARACTER |
1834 | && (!sym->attr.is_bind_c || sym->attr.entry_master)) | |
417ab240 JJ |
1835 | { |
1836 | tree len_type = TREE_VALUE (hidden_typelist); | |
1837 | tree length = NULL_TREE; | |
1838 | gcc_assert (len_type == gfc_charlen_type_node); | |
1839 | ||
1840 | strcpy (&name[1], f->sym->name); | |
1841 | name[0] = '_'; | |
c2255bc4 AH |
1842 | length = build_decl (input_location, |
1843 | PARM_DECL, get_identifier (name), len_type); | |
6de9cd9a | 1844 | |
417ab240 JJ |
1845 | hidden_arglist = chainon (hidden_arglist, length); |
1846 | DECL_CONTEXT (length) = fndecl; | |
1847 | DECL_ARTIFICIAL (length) = 1; | |
1848 | DECL_ARG_TYPE (length) = len_type; | |
1849 | TREE_READONLY (length) = 1; | |
faf28b3a | 1850 | gfc_finish_decl (length); |
6de9cd9a | 1851 | |
cadb8f42 | 1852 | /* Remember the passed value. */ |
bc21d315 | 1853 | if (f->sym->ts.u.cl->passed_length != NULL) |
3ba558db TB |
1854 | { |
1855 | /* This can happen if the same type is used for multiple | |
1856 | arguments. We need to copy cl as otherwise | |
1857 | cl->passed_length gets overwritten. */ | |
b76e28c6 | 1858 | f->sym->ts.u.cl = gfc_new_charlen (f->sym->ns, f->sym->ts.u.cl); |
3ba558db | 1859 | } |
bc21d315 | 1860 | f->sym->ts.u.cl->passed_length = length; |
6de9cd9a | 1861 | |
417ab240 | 1862 | /* Use the passed value for assumed length variables. */ |
bc21d315 | 1863 | if (!f->sym->ts.u.cl->length) |
6de9cd9a | 1864 | { |
417ab240 | 1865 | TREE_USED (length) = 1; |
bc21d315 JW |
1866 | gcc_assert (!f->sym->ts.u.cl->backend_decl); |
1867 | f->sym->ts.u.cl->backend_decl = length; | |
417ab240 JJ |
1868 | } |
1869 | ||
1870 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
1871 | ||
bc21d315 JW |
1872 | if (f->sym->ts.u.cl->backend_decl == NULL |
1873 | || f->sym->ts.u.cl->backend_decl == length) | |
417ab240 | 1874 | { |
bc21d315 | 1875 | if (f->sym->ts.u.cl->backend_decl == NULL) |
417ab240 JJ |
1876 | gfc_create_string_length (f->sym); |
1877 | ||
1878 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ | |
1879 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
1880 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
1881 | else | |
1882 | type = gfc_sym_type (f->sym); | |
6de9cd9a | 1883 | } |
6de9cd9a DN |
1884 | } |
1885 | ||
417ab240 JJ |
1886 | /* For non-constant length array arguments, make sure they use |
1887 | a different type node from TYPE_ARG_TYPES type. */ | |
1888 | if (f->sym->attr.dimension | |
1889 | && type == TREE_VALUE (typelist) | |
1890 | && TREE_CODE (type) == POINTER_TYPE | |
1891 | && GFC_ARRAY_TYPE_P (type) | |
1892 | && f->sym->as->type != AS_ASSUMED_SIZE | |
1893 | && ! COMPLETE_TYPE_P (TREE_TYPE (type))) | |
1894 | { | |
1895 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
1896 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
1897 | else | |
1898 | type = gfc_sym_type (f->sym); | |
1899 | } | |
1900 | ||
8fb74da4 JW |
1901 | if (f->sym->attr.proc_pointer) |
1902 | type = build_pointer_type (type); | |
1903 | ||
df2fba9e | 1904 | /* Build the argument declaration. */ |
c2255bc4 AH |
1905 | parm = build_decl (input_location, |
1906 | PARM_DECL, gfc_sym_identifier (f->sym), type); | |
417ab240 JJ |
1907 | |
1908 | /* Fill in arg stuff. */ | |
1909 | DECL_CONTEXT (parm) = fndecl; | |
1910 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
1911 | /* All implementation args are read-only. */ | |
1912 | TREE_READONLY (parm) = 1; | |
714495cd JJ |
1913 | if (POINTER_TYPE_P (type) |
1914 | && (!f->sym->attr.proc_pointer | |
1915 | && f->sym->attr.flavor != FL_PROCEDURE)) | |
1916 | DECL_BY_REFERENCE (parm) = 1; | |
417ab240 | 1917 | |
faf28b3a | 1918 | gfc_finish_decl (parm); |
417ab240 JJ |
1919 | |
1920 | f->sym->backend_decl = parm; | |
1921 | ||
1922 | arglist = chainon (arglist, parm); | |
1d754240 | 1923 | typelist = TREE_CHAIN (typelist); |
6de9cd9a | 1924 | } |
1d754240 | 1925 | |
7861a5ce TB |
1926 | /* Add the hidden string length parameters, unless the procedure |
1927 | is bind(C). */ | |
1928 | if (!sym->attr.is_bind_c) | |
1929 | arglist = chainon (arglist, hidden_arglist); | |
417ab240 | 1930 | |
884d2e6b SE |
1931 | gcc_assert (hidden_typelist == NULL_TREE |
1932 | || TREE_VALUE (hidden_typelist) == void_type_node); | |
1d754240 | 1933 | DECL_ARGUMENTS (fndecl) = arglist; |
3d79abbd | 1934 | } |
1d754240 | 1935 | |
3d79abbd PB |
1936 | /* Do the setup necessary before generating the body of a function. */ |
1937 | ||
1938 | static void | |
1939 | trans_function_start (gfc_symbol * sym) | |
1940 | { | |
1941 | tree fndecl; | |
1942 | ||
1943 | fndecl = sym->backend_decl; | |
1944 | ||
f8d0aee5 | 1945 | /* Let GCC know the current scope is this function. */ |
3d79abbd PB |
1946 | current_function_decl = fndecl; |
1947 | ||
f8d0aee5 | 1948 | /* Let the world know what we're about to do. */ |
3d79abbd PB |
1949 | announce_function (fndecl); |
1950 | ||
1951 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1952 | { | |
f8d0aee5 | 1953 | /* Create RTL for function declaration. */ |
3d79abbd PB |
1954 | rest_of_decl_compilation (fndecl, 1, 0); |
1955 | } | |
1956 | ||
f8d0aee5 | 1957 | /* Create RTL for function definition. */ |
3d79abbd PB |
1958 | make_decl_rtl (fndecl); |
1959 | ||
3d79abbd PB |
1960 | init_function_start (fndecl); |
1961 | ||
1962 | /* Even though we're inside a function body, we still don't want to | |
1963 | call expand_expr to calculate the size of a variable-sized array. | |
1964 | We haven't necessarily assigned RTL to all variables yet, so it's | |
1965 | not safe to try to expand expressions involving them. */ | |
e3b5732b | 1966 | cfun->dont_save_pending_sizes_p = 1; |
3d79abbd | 1967 | |
f8d0aee5 | 1968 | /* function.c requires a push at the start of the function. */ |
3d79abbd PB |
1969 | pushlevel (0); |
1970 | } | |
1971 | ||
1972 | /* Create thunks for alternate entry points. */ | |
1973 | ||
1974 | static void | |
1975 | build_entry_thunks (gfc_namespace * ns) | |
1976 | { | |
1977 | gfc_formal_arglist *formal; | |
1978 | gfc_formal_arglist *thunk_formal; | |
1979 | gfc_entry_list *el; | |
1980 | gfc_symbol *thunk_sym; | |
1981 | stmtblock_t body; | |
1982 | tree thunk_fndecl; | |
1983 | tree args; | |
1984 | tree string_args; | |
1985 | tree tmp; | |
c8cc8542 | 1986 | locus old_loc; |
3d79abbd PB |
1987 | |
1988 | /* This should always be a toplevel function. */ | |
6e45f57b | 1989 | gcc_assert (current_function_decl == NULL_TREE); |
3d79abbd | 1990 | |
c8cc8542 | 1991 | gfc_get_backend_locus (&old_loc); |
3d79abbd PB |
1992 | for (el = ns->entries; el; el = el->next) |
1993 | { | |
1994 | thunk_sym = el->sym; | |
1995 | ||
1996 | build_function_decl (thunk_sym); | |
1997 | create_function_arglist (thunk_sym); | |
1998 | ||
1999 | trans_function_start (thunk_sym); | |
2000 | ||
2001 | thunk_fndecl = thunk_sym->backend_decl; | |
2002 | ||
c7c79a09 | 2003 | gfc_init_block (&body); |
3d79abbd | 2004 | |
f8d0aee5 | 2005 | /* Pass extra parameter identifying this entry point. */ |
7d60be94 | 2006 | tmp = build_int_cst (gfc_array_index_type, el->id); |
3d79abbd PB |
2007 | args = tree_cons (NULL_TREE, tmp, NULL_TREE); |
2008 | string_args = NULL_TREE; | |
2009 | ||
d198b59a JJ |
2010 | if (thunk_sym->attr.function) |
2011 | { | |
2012 | if (gfc_return_by_reference (ns->proc_name)) | |
2013 | { | |
2014 | tree ref = DECL_ARGUMENTS (current_function_decl); | |
2015 | args = tree_cons (NULL_TREE, ref, args); | |
2016 | if (ns->proc_name->ts.type == BT_CHARACTER) | |
2017 | args = tree_cons (NULL_TREE, TREE_CHAIN (ref), | |
2018 | args); | |
2019 | } | |
2020 | } | |
2021 | ||
3d79abbd PB |
2022 | for (formal = ns->proc_name->formal; formal; formal = formal->next) |
2023 | { | |
d198b59a JJ |
2024 | /* Ignore alternate returns. */ |
2025 | if (formal->sym == NULL) | |
2026 | continue; | |
2027 | ||
3d79abbd PB |
2028 | /* We don't have a clever way of identifying arguments, so resort to |
2029 | a brute-force search. */ | |
2030 | for (thunk_formal = thunk_sym->formal; | |
2031 | thunk_formal; | |
2032 | thunk_formal = thunk_formal->next) | |
2033 | { | |
2034 | if (thunk_formal->sym == formal->sym) | |
2035 | break; | |
2036 | } | |
2037 | ||
2038 | if (thunk_formal) | |
2039 | { | |
2040 | /* Pass the argument. */ | |
3e978d30 | 2041 | DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1; |
3d79abbd PB |
2042 | args = tree_cons (NULL_TREE, thunk_formal->sym->backend_decl, |
2043 | args); | |
2044 | if (formal->sym->ts.type == BT_CHARACTER) | |
2045 | { | |
bc21d315 | 2046 | tmp = thunk_formal->sym->ts.u.cl->backend_decl; |
3d79abbd PB |
2047 | string_args = tree_cons (NULL_TREE, tmp, string_args); |
2048 | } | |
2049 | } | |
2050 | else | |
2051 | { | |
2052 | /* Pass NULL for a missing argument. */ | |
2053 | args = tree_cons (NULL_TREE, null_pointer_node, args); | |
2054 | if (formal->sym->ts.type == BT_CHARACTER) | |
2055 | { | |
c3238e32 | 2056 | tmp = build_int_cst (gfc_charlen_type_node, 0); |
3d79abbd PB |
2057 | string_args = tree_cons (NULL_TREE, tmp, string_args); |
2058 | } | |
2059 | } | |
2060 | } | |
2061 | ||
2062 | /* Call the master function. */ | |
2063 | args = nreverse (args); | |
2064 | args = chainon (args, nreverse (string_args)); | |
2065 | tmp = ns->proc_name->backend_decl; | |
db3927fb | 2066 | tmp = build_function_call_expr (input_location, tmp, args); |
d198b59a JJ |
2067 | if (ns->proc_name->attr.mixed_entry_master) |
2068 | { | |
2069 | tree union_decl, field; | |
2070 | tree master_type = TREE_TYPE (ns->proc_name->backend_decl); | |
2071 | ||
c2255bc4 AH |
2072 | union_decl = build_decl (input_location, |
2073 | VAR_DECL, get_identifier ("__result"), | |
d198b59a JJ |
2074 | TREE_TYPE (master_type)); |
2075 | DECL_ARTIFICIAL (union_decl) = 1; | |
2076 | DECL_EXTERNAL (union_decl) = 0; | |
2077 | TREE_PUBLIC (union_decl) = 0; | |
2078 | TREE_USED (union_decl) = 1; | |
2079 | layout_decl (union_decl, 0); | |
2080 | pushdecl (union_decl); | |
2081 | ||
2082 | DECL_CONTEXT (union_decl) = current_function_decl; | |
44855d8c TS |
2083 | tmp = fold_build2 (MODIFY_EXPR, TREE_TYPE (union_decl), |
2084 | union_decl, tmp); | |
d198b59a JJ |
2085 | gfc_add_expr_to_block (&body, tmp); |
2086 | ||
2087 | for (field = TYPE_FIELDS (TREE_TYPE (union_decl)); | |
2088 | field; field = TREE_CHAIN (field)) | |
2089 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), | |
2090 | thunk_sym->result->name) == 0) | |
2091 | break; | |
2092 | gcc_assert (field != NULL_TREE); | |
44855d8c TS |
2093 | tmp = fold_build3 (COMPONENT_REF, TREE_TYPE (field), |
2094 | union_decl, field, NULL_TREE); | |
2095 | tmp = fold_build2 (MODIFY_EXPR, | |
2096 | TREE_TYPE (DECL_RESULT (current_function_decl)), | |
2097 | DECL_RESULT (current_function_decl), tmp); | |
d198b59a JJ |
2098 | tmp = build1_v (RETURN_EXPR, tmp); |
2099 | } | |
2100 | else if (TREE_TYPE (DECL_RESULT (current_function_decl)) | |
2101 | != void_type_node) | |
2102 | { | |
44855d8c TS |
2103 | tmp = fold_build2 (MODIFY_EXPR, |
2104 | TREE_TYPE (DECL_RESULT (current_function_decl)), | |
2105 | DECL_RESULT (current_function_decl), tmp); | |
d198b59a JJ |
2106 | tmp = build1_v (RETURN_EXPR, tmp); |
2107 | } | |
3d79abbd PB |
2108 | gfc_add_expr_to_block (&body, tmp); |
2109 | ||
2110 | /* Finish off this function and send it for code generation. */ | |
2111 | DECL_SAVED_TREE (thunk_fndecl) = gfc_finish_block (&body); | |
c7c79a09 | 2112 | tmp = getdecls (); |
3d79abbd PB |
2113 | poplevel (1, 0, 1); |
2114 | BLOCK_SUPERCONTEXT (DECL_INITIAL (thunk_fndecl)) = thunk_fndecl; | |
c7c79a09 JJ |
2115 | DECL_SAVED_TREE (thunk_fndecl) |
2116 | = build3_v (BIND_EXPR, tmp, DECL_SAVED_TREE (thunk_fndecl), | |
2117 | DECL_INITIAL (thunk_fndecl)); | |
3d79abbd PB |
2118 | |
2119 | /* Output the GENERIC tree. */ | |
2120 | dump_function (TDI_original, thunk_fndecl); | |
2121 | ||
2122 | /* Store the end of the function, so that we get good line number | |
2123 | info for the epilogue. */ | |
2124 | cfun->function_end_locus = input_location; | |
2125 | ||
2126 | /* We're leaving the context of this function, so zap cfun. | |
2127 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
2128 | tree_rest_of_compilation. */ | |
db2960f4 | 2129 | set_cfun (NULL); |
3d79abbd PB |
2130 | |
2131 | current_function_decl = NULL_TREE; | |
2132 | ||
9618fb3c | 2133 | cgraph_finalize_function (thunk_fndecl, true); |
3d79abbd PB |
2134 | |
2135 | /* We share the symbols in the formal argument list with other entry | |
2136 | points and the master function. Clear them so that they are | |
2137 | recreated for each function. */ | |
2138 | for (formal = thunk_sym->formal; formal; formal = formal->next) | |
d198b59a JJ |
2139 | if (formal->sym != NULL) /* Ignore alternate returns. */ |
2140 | { | |
2141 | formal->sym->backend_decl = NULL_TREE; | |
2142 | if (formal->sym->ts.type == BT_CHARACTER) | |
bc21d315 | 2143 | formal->sym->ts.u.cl->backend_decl = NULL_TREE; |
d198b59a JJ |
2144 | } |
2145 | ||
2146 | if (thunk_sym->attr.function) | |
3d79abbd | 2147 | { |
d198b59a | 2148 | if (thunk_sym->ts.type == BT_CHARACTER) |
bc21d315 | 2149 | thunk_sym->ts.u.cl->backend_decl = NULL_TREE; |
d198b59a | 2150 | if (thunk_sym->result->ts.type == BT_CHARACTER) |
bc21d315 | 2151 | thunk_sym->result->ts.u.cl->backend_decl = NULL_TREE; |
3d79abbd PB |
2152 | } |
2153 | } | |
c8cc8542 PB |
2154 | |
2155 | gfc_set_backend_locus (&old_loc); | |
3d79abbd PB |
2156 | } |
2157 | ||
2158 | ||
2159 | /* Create a decl for a function, and create any thunks for alternate entry | |
2160 | points. */ | |
2161 | ||
2162 | void | |
2163 | gfc_create_function_decl (gfc_namespace * ns) | |
2164 | { | |
2165 | /* Create a declaration for the master function. */ | |
2166 | build_function_decl (ns->proc_name); | |
2167 | ||
f8d0aee5 | 2168 | /* Compile the entry thunks. */ |
3d79abbd PB |
2169 | if (ns->entries) |
2170 | build_entry_thunks (ns); | |
2171 | ||
2172 | /* Now create the read argument list. */ | |
2173 | create_function_arglist (ns->proc_name); | |
2174 | } | |
2175 | ||
5f20c93a | 2176 | /* Return the decl used to hold the function return value. If |
da4c6ed8 | 2177 | parent_flag is set, the context is the parent_scope. */ |
6de9cd9a DN |
2178 | |
2179 | tree | |
5f20c93a | 2180 | gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag) |
6de9cd9a | 2181 | { |
5f20c93a PT |
2182 | tree decl; |
2183 | tree length; | |
2184 | tree this_fake_result_decl; | |
2185 | tree this_function_decl; | |
6de9cd9a DN |
2186 | |
2187 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
2188 | ||
5f20c93a PT |
2189 | if (parent_flag) |
2190 | { | |
2191 | this_fake_result_decl = parent_fake_result_decl; | |
2192 | this_function_decl = DECL_CONTEXT (current_function_decl); | |
2193 | } | |
2194 | else | |
2195 | { | |
2196 | this_fake_result_decl = current_fake_result_decl; | |
2197 | this_function_decl = current_function_decl; | |
2198 | } | |
2199 | ||
d198b59a | 2200 | if (sym |
5f20c93a | 2201 | && sym->ns->proc_name->backend_decl == this_function_decl |
417ab240 | 2202 | && sym->ns->proc_name->attr.entry_master |
d198b59a JJ |
2203 | && sym != sym->ns->proc_name) |
2204 | { | |
417ab240 | 2205 | tree t = NULL, var; |
5f20c93a PT |
2206 | if (this_fake_result_decl != NULL) |
2207 | for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t)) | |
417ab240 JJ |
2208 | if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0) |
2209 | break; | |
2210 | if (t) | |
2211 | return TREE_VALUE (t); | |
5f20c93a PT |
2212 | decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag); |
2213 | ||
2214 | if (parent_flag) | |
2215 | this_fake_result_decl = parent_fake_result_decl; | |
2216 | else | |
2217 | this_fake_result_decl = current_fake_result_decl; | |
2218 | ||
417ab240 | 2219 | if (decl && sym->ns->proc_name->attr.mixed_entry_master) |
d198b59a JJ |
2220 | { |
2221 | tree field; | |
2222 | ||
2223 | for (field = TYPE_FIELDS (TREE_TYPE (decl)); | |
2224 | field; field = TREE_CHAIN (field)) | |
2225 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), | |
2226 | sym->name) == 0) | |
2227 | break; | |
2228 | ||
2229 | gcc_assert (field != NULL_TREE); | |
44855d8c TS |
2230 | decl = fold_build3 (COMPONENT_REF, TREE_TYPE (field), |
2231 | decl, field, NULL_TREE); | |
d198b59a | 2232 | } |
5f20c93a PT |
2233 | |
2234 | var = create_tmp_var_raw (TREE_TYPE (decl), sym->name); | |
2235 | if (parent_flag) | |
2236 | gfc_add_decl_to_parent_function (var); | |
2237 | else | |
2238 | gfc_add_decl_to_function (var); | |
2239 | ||
417ab240 JJ |
2240 | SET_DECL_VALUE_EXPR (var, decl); |
2241 | DECL_HAS_VALUE_EXPR_P (var) = 1; | |
4b8ae4db | 2242 | GFC_DECL_RESULT (var) = 1; |
5f20c93a PT |
2243 | |
2244 | TREE_CHAIN (this_fake_result_decl) | |
2245 | = tree_cons (get_identifier (sym->name), var, | |
2246 | TREE_CHAIN (this_fake_result_decl)); | |
417ab240 | 2247 | return var; |
d198b59a JJ |
2248 | } |
2249 | ||
5f20c93a PT |
2250 | if (this_fake_result_decl != NULL_TREE) |
2251 | return TREE_VALUE (this_fake_result_decl); | |
6de9cd9a DN |
2252 | |
2253 | /* Only when gfc_get_fake_result_decl is called by gfc_trans_return, | |
2254 | sym is NULL. */ | |
2255 | if (!sym) | |
2256 | return NULL_TREE; | |
2257 | ||
417ab240 | 2258 | if (sym->ts.type == BT_CHARACTER) |
6de9cd9a | 2259 | { |
bc21d315 | 2260 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
417ab240 JJ |
2261 | length = gfc_create_string_length (sym); |
2262 | else | |
bc21d315 | 2263 | length = sym->ts.u.cl->backend_decl; |
417ab240 JJ |
2264 | if (TREE_CODE (length) == VAR_DECL |
2265 | && DECL_CONTEXT (length) == NULL_TREE) | |
a7d6b765 | 2266 | gfc_add_decl_to_function (length); |
6de9cd9a DN |
2267 | } |
2268 | ||
2269 | if (gfc_return_by_reference (sym)) | |
2270 | { | |
5f20c93a | 2271 | decl = DECL_ARGUMENTS (this_function_decl); |
d198b59a | 2272 | |
5f20c93a | 2273 | if (sym->ns->proc_name->backend_decl == this_function_decl |
d198b59a JJ |
2274 | && sym->ns->proc_name->attr.entry_master) |
2275 | decl = TREE_CHAIN (decl); | |
6de9cd9a DN |
2276 | |
2277 | TREE_USED (decl) = 1; | |
2278 | if (sym->as) | |
2279 | decl = gfc_build_dummy_array_decl (sym, decl); | |
2280 | } | |
2281 | else | |
2282 | { | |
2283 | sprintf (name, "__result_%.20s", | |
5f20c93a | 2284 | IDENTIFIER_POINTER (DECL_NAME (this_function_decl))); |
6de9cd9a | 2285 | |
da4c6ed8 | 2286 | if (!sym->attr.mixed_entry_master && sym->attr.function) |
88e09c79 | 2287 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
c2255bc4 | 2288 | VAR_DECL, get_identifier (name), |
da4c6ed8 TS |
2289 | gfc_sym_type (sym)); |
2290 | else | |
88e09c79 | 2291 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
c2255bc4 | 2292 | VAR_DECL, get_identifier (name), |
da4c6ed8 | 2293 | TREE_TYPE (TREE_TYPE (this_function_decl))); |
6de9cd9a DN |
2294 | DECL_ARTIFICIAL (decl) = 1; |
2295 | DECL_EXTERNAL (decl) = 0; | |
2296 | TREE_PUBLIC (decl) = 0; | |
2297 | TREE_USED (decl) = 1; | |
6c7a4dfd | 2298 | GFC_DECL_RESULT (decl) = 1; |
c55cebda | 2299 | TREE_ADDRESSABLE (decl) = 1; |
6de9cd9a DN |
2300 | |
2301 | layout_decl (decl, 0); | |
2302 | ||
5f20c93a PT |
2303 | if (parent_flag) |
2304 | gfc_add_decl_to_parent_function (decl); | |
2305 | else | |
2306 | gfc_add_decl_to_function (decl); | |
6de9cd9a DN |
2307 | } |
2308 | ||
5f20c93a PT |
2309 | if (parent_flag) |
2310 | parent_fake_result_decl = build_tree_list (NULL, decl); | |
2311 | else | |
2312 | current_fake_result_decl = build_tree_list (NULL, decl); | |
6de9cd9a DN |
2313 | |
2314 | return decl; | |
2315 | } | |
2316 | ||
2317 | ||
2318 | /* Builds a function decl. The remaining parameters are the types of the | |
2319 | function arguments. Negative nargs indicates a varargs function. */ | |
2320 | ||
0b7b376d RG |
2321 | static tree |
2322 | build_library_function_decl_1 (tree name, const char *spec, | |
2323 | tree rettype, int nargs, va_list p) | |
6de9cd9a DN |
2324 | { |
2325 | tree arglist; | |
2326 | tree argtype; | |
2327 | tree fntype; | |
2328 | tree fndecl; | |
6de9cd9a DN |
2329 | int n; |
2330 | ||
2331 | /* Library functions must be declared with global scope. */ | |
6e45f57b | 2332 | gcc_assert (current_function_decl == NULL_TREE); |
6de9cd9a | 2333 | |
6de9cd9a DN |
2334 | /* Create a list of the argument types. */ |
2335 | for (arglist = NULL_TREE, n = abs (nargs); n > 0; n--) | |
2336 | { | |
2337 | argtype = va_arg (p, tree); | |
2338 | arglist = gfc_chainon_list (arglist, argtype); | |
2339 | } | |
2340 | ||
2341 | if (nargs >= 0) | |
2342 | { | |
2343 | /* Terminate the list. */ | |
2344 | arglist = gfc_chainon_list (arglist, void_type_node); | |
2345 | } | |
2346 | ||
2347 | /* Build the function type and decl. */ | |
2348 | fntype = build_function_type (rettype, arglist); | |
0b7b376d RG |
2349 | if (spec) |
2350 | { | |
2351 | tree attr_args = build_tree_list (NULL_TREE, | |
2352 | build_string (strlen (spec), spec)); | |
2353 | tree attrs = tree_cons (get_identifier ("fn spec"), | |
2354 | attr_args, TYPE_ATTRIBUTES (fntype)); | |
2355 | fntype = build_type_attribute_variant (fntype, attrs); | |
2356 | } | |
c2255bc4 AH |
2357 | fndecl = build_decl (input_location, |
2358 | FUNCTION_DECL, name, fntype); | |
6de9cd9a DN |
2359 | |
2360 | /* Mark this decl as external. */ | |
2361 | DECL_EXTERNAL (fndecl) = 1; | |
2362 | TREE_PUBLIC (fndecl) = 1; | |
2363 | ||
6de9cd9a DN |
2364 | pushdecl (fndecl); |
2365 | ||
0e6df31e | 2366 | rest_of_decl_compilation (fndecl, 1, 0); |
6de9cd9a DN |
2367 | |
2368 | return fndecl; | |
2369 | } | |
2370 | ||
0b7b376d RG |
2371 | /* Builds a function decl. The remaining parameters are the types of the |
2372 | function arguments. Negative nargs indicates a varargs function. */ | |
2373 | ||
2374 | tree | |
2375 | gfc_build_library_function_decl (tree name, tree rettype, int nargs, ...) | |
2376 | { | |
2377 | tree ret; | |
2378 | va_list args; | |
2379 | va_start (args, nargs); | |
2380 | ret = build_library_function_decl_1 (name, NULL, rettype, nargs, args); | |
2381 | va_end (args); | |
2382 | return ret; | |
2383 | } | |
2384 | ||
2385 | /* Builds a function decl. The remaining parameters are the types of the | |
2386 | function arguments. Negative nargs indicates a varargs function. | |
2387 | The SPEC parameter specifies the function argument and return type | |
2388 | specification according to the fnspec function type attribute. */ | |
2389 | ||
2390 | static tree | |
2391 | gfc_build_library_function_decl_with_spec (tree name, const char *spec, | |
2392 | tree rettype, int nargs, ...) | |
2393 | { | |
2394 | tree ret; | |
2395 | va_list args; | |
2396 | va_start (args, nargs); | |
2397 | ret = build_library_function_decl_1 (name, spec, rettype, nargs, args); | |
2398 | va_end (args); | |
2399 | return ret; | |
2400 | } | |
2401 | ||
6de9cd9a DN |
2402 | static void |
2403 | gfc_build_intrinsic_function_decls (void) | |
2404 | { | |
e2cad04b RH |
2405 | tree gfc_int4_type_node = gfc_get_int_type (4); |
2406 | tree gfc_int8_type_node = gfc_get_int_type (8); | |
644cb69f | 2407 | tree gfc_int16_type_node = gfc_get_int_type (16); |
e2cad04b | 2408 | tree gfc_logical4_type_node = gfc_get_logical_type (4); |
374929b2 FXC |
2409 | tree pchar1_type_node = gfc_get_pchar_type (1); |
2410 | tree pchar4_type_node = gfc_get_pchar_type (4); | |
e2cad04b | 2411 | |
6de9cd9a | 2412 | /* String functions. */ |
6de9cd9a DN |
2413 | gfor_fndecl_compare_string = |
2414 | gfc_build_library_function_decl (get_identifier (PREFIX("compare_string")), | |
c9ff1de3 | 2415 | integer_type_node, 4, |
374929b2 FXC |
2416 | gfc_charlen_type_node, pchar1_type_node, |
2417 | gfc_charlen_type_node, pchar1_type_node); | |
6de9cd9a DN |
2418 | |
2419 | gfor_fndecl_concat_string = | |
2420 | gfc_build_library_function_decl (get_identifier (PREFIX("concat_string")), | |
374929b2 FXC |
2421 | void_type_node, 6, |
2422 | gfc_charlen_type_node, pchar1_type_node, | |
2423 | gfc_charlen_type_node, pchar1_type_node, | |
2424 | gfc_charlen_type_node, pchar1_type_node); | |
6de9cd9a DN |
2425 | |
2426 | gfor_fndecl_string_len_trim = | |
2427 | gfc_build_library_function_decl (get_identifier (PREFIX("string_len_trim")), | |
6cd8d93a | 2428 | gfc_charlen_type_node, 2, |
374929b2 | 2429 | gfc_charlen_type_node, pchar1_type_node); |
6de9cd9a DN |
2430 | |
2431 | gfor_fndecl_string_index = | |
2432 | gfc_build_library_function_decl (get_identifier (PREFIX("string_index")), | |
6cd8d93a | 2433 | gfc_charlen_type_node, 5, |
374929b2 FXC |
2434 | gfc_charlen_type_node, pchar1_type_node, |
2435 | gfc_charlen_type_node, pchar1_type_node, | |
2436 | gfc_logical4_type_node); | |
6de9cd9a DN |
2437 | |
2438 | gfor_fndecl_string_scan = | |
2439 | gfc_build_library_function_decl (get_identifier (PREFIX("string_scan")), | |
6cd8d93a | 2440 | gfc_charlen_type_node, 5, |
374929b2 FXC |
2441 | gfc_charlen_type_node, pchar1_type_node, |
2442 | gfc_charlen_type_node, pchar1_type_node, | |
2443 | gfc_logical4_type_node); | |
6de9cd9a DN |
2444 | |
2445 | gfor_fndecl_string_verify = | |
2446 | gfc_build_library_function_decl (get_identifier (PREFIX("string_verify")), | |
6cd8d93a | 2447 | gfc_charlen_type_node, 5, |
374929b2 FXC |
2448 | gfc_charlen_type_node, pchar1_type_node, |
2449 | gfc_charlen_type_node, pchar1_type_node, | |
2450 | gfc_logical4_type_node); | |
6de9cd9a | 2451 | |
7389bce6 | 2452 | gfor_fndecl_string_trim = |
6de9cd9a | 2453 | gfc_build_library_function_decl (get_identifier (PREFIX("string_trim")), |
374929b2 FXC |
2454 | void_type_node, 4, |
2455 | build_pointer_type (gfc_charlen_type_node), | |
2456 | build_pointer_type (pchar1_type_node), | |
2457 | gfc_charlen_type_node, pchar1_type_node); | |
6de9cd9a | 2458 | |
2263c775 FXC |
2459 | gfor_fndecl_string_minmax = |
2460 | gfc_build_library_function_decl (get_identifier (PREFIX("string_minmax")), | |
374929b2 FXC |
2461 | void_type_node, -4, |
2462 | build_pointer_type (gfc_charlen_type_node), | |
2463 | build_pointer_type (pchar1_type_node), | |
2464 | integer_type_node, integer_type_node); | |
2465 | ||
2466 | gfor_fndecl_adjustl = | |
2467 | gfc_build_library_function_decl (get_identifier (PREFIX("adjustl")), | |
2468 | void_type_node, 3, pchar1_type_node, | |
2469 | gfc_charlen_type_node, pchar1_type_node); | |
2470 | ||
2471 | gfor_fndecl_adjustr = | |
2472 | gfc_build_library_function_decl (get_identifier (PREFIX("adjustr")), | |
2473 | void_type_node, 3, pchar1_type_node, | |
2474 | gfc_charlen_type_node, pchar1_type_node); | |
2475 | ||
d393bbd7 FXC |
2476 | gfor_fndecl_select_string = |
2477 | gfc_build_library_function_decl (get_identifier (PREFIX("select_string")), | |
2478 | integer_type_node, 4, pvoid_type_node, | |
2479 | integer_type_node, pchar1_type_node, | |
2480 | gfc_charlen_type_node); | |
2481 | ||
374929b2 FXC |
2482 | gfor_fndecl_compare_string_char4 = |
2483 | gfc_build_library_function_decl (get_identifier | |
2484 | (PREFIX("compare_string_char4")), | |
2485 | integer_type_node, 4, | |
2486 | gfc_charlen_type_node, pchar4_type_node, | |
2487 | gfc_charlen_type_node, pchar4_type_node); | |
2488 | ||
2489 | gfor_fndecl_concat_string_char4 = | |
2490 | gfc_build_library_function_decl (get_identifier | |
2491 | (PREFIX("concat_string_char4")), | |
2492 | void_type_node, 6, | |
2493 | gfc_charlen_type_node, pchar4_type_node, | |
2494 | gfc_charlen_type_node, pchar4_type_node, | |
2495 | gfc_charlen_type_node, pchar4_type_node); | |
2496 | ||
2497 | gfor_fndecl_string_len_trim_char4 = | |
2498 | gfc_build_library_function_decl (get_identifier | |
2499 | (PREFIX("string_len_trim_char4")), | |
2500 | gfc_charlen_type_node, 2, | |
2501 | gfc_charlen_type_node, pchar4_type_node); | |
2502 | ||
2503 | gfor_fndecl_string_index_char4 = | |
2504 | gfc_build_library_function_decl (get_identifier | |
2505 | (PREFIX("string_index_char4")), | |
2506 | gfc_charlen_type_node, 5, | |
2507 | gfc_charlen_type_node, pchar4_type_node, | |
2508 | gfc_charlen_type_node, pchar4_type_node, | |
2509 | gfc_logical4_type_node); | |
2510 | ||
2511 | gfor_fndecl_string_scan_char4 = | |
2512 | gfc_build_library_function_decl (get_identifier | |
2513 | (PREFIX("string_scan_char4")), | |
2514 | gfc_charlen_type_node, 5, | |
2515 | gfc_charlen_type_node, pchar4_type_node, | |
2516 | gfc_charlen_type_node, pchar4_type_node, | |
2517 | gfc_logical4_type_node); | |
2518 | ||
2519 | gfor_fndecl_string_verify_char4 = | |
2520 | gfc_build_library_function_decl (get_identifier | |
2521 | (PREFIX("string_verify_char4")), | |
2522 | gfc_charlen_type_node, 5, | |
2523 | gfc_charlen_type_node, pchar4_type_node, | |
2524 | gfc_charlen_type_node, pchar4_type_node, | |
2525 | gfc_logical4_type_node); | |
2526 | ||
2527 | gfor_fndecl_string_trim_char4 = | |
2528 | gfc_build_library_function_decl (get_identifier | |
2529 | (PREFIX("string_trim_char4")), | |
2530 | void_type_node, 4, | |
2531 | build_pointer_type (gfc_charlen_type_node), | |
2532 | build_pointer_type (pchar4_type_node), | |
2533 | gfc_charlen_type_node, pchar4_type_node); | |
2534 | ||
2535 | gfor_fndecl_string_minmax_char4 = | |
2536 | gfc_build_library_function_decl (get_identifier | |
2537 | (PREFIX("string_minmax_char4")), | |
2538 | void_type_node, -4, | |
2539 | build_pointer_type (gfc_charlen_type_node), | |
2540 | build_pointer_type (pchar4_type_node), | |
2541 | integer_type_node, integer_type_node); | |
2542 | ||
2543 | gfor_fndecl_adjustl_char4 = | |
2544 | gfc_build_library_function_decl (get_identifier (PREFIX("adjustl_char4")), | |
2545 | void_type_node, 3, pchar4_type_node, | |
2546 | gfc_charlen_type_node, pchar4_type_node); | |
2547 | ||
2548 | gfor_fndecl_adjustr_char4 = | |
2549 | gfc_build_library_function_decl (get_identifier (PREFIX("adjustr_char4")), | |
2550 | void_type_node, 3, pchar4_type_node, | |
2551 | gfc_charlen_type_node, pchar4_type_node); | |
2552 | ||
d393bbd7 FXC |
2553 | gfor_fndecl_select_string_char4 = |
2554 | gfc_build_library_function_decl (get_identifier | |
2555 | (PREFIX("select_string_char4")), | |
2556 | integer_type_node, 4, pvoid_type_node, | |
2557 | integer_type_node, pvoid_type_node, | |
2558 | gfc_charlen_type_node); | |
2559 | ||
2560 | ||
2561 | /* Conversion between character kinds. */ | |
2562 | ||
2563 | gfor_fndecl_convert_char1_to_char4 = | |
2564 | gfc_build_library_function_decl (get_identifier | |
2565 | (PREFIX("convert_char1_to_char4")), | |
2566 | void_type_node, 3, | |
2567 | build_pointer_type (pchar4_type_node), | |
2568 | gfc_charlen_type_node, pchar1_type_node); | |
2569 | ||
2570 | gfor_fndecl_convert_char4_to_char1 = | |
2571 | gfc_build_library_function_decl (get_identifier | |
2572 | (PREFIX("convert_char4_to_char1")), | |
2573 | void_type_node, 3, | |
2574 | build_pointer_type (pchar1_type_node), | |
2575 | gfc_charlen_type_node, pchar4_type_node); | |
2576 | ||
374929b2 | 2577 | /* Misc. functions. */ |
2263c775 | 2578 | |
25fc05eb FXC |
2579 | gfor_fndecl_ttynam = |
2580 | gfc_build_library_function_decl (get_identifier (PREFIX("ttynam")), | |
2581 | void_type_node, | |
2582 | 3, | |
2583 | pchar_type_node, | |
2584 | gfc_charlen_type_node, | |
dd52ecb0 | 2585 | integer_type_node); |
25fc05eb | 2586 | |
35059811 FXC |
2587 | gfor_fndecl_fdate = |
2588 | gfc_build_library_function_decl (get_identifier (PREFIX("fdate")), | |
2589 | void_type_node, | |
2590 | 2, | |
2591 | pchar_type_node, | |
2592 | gfc_charlen_type_node); | |
2593 | ||
2594 | gfor_fndecl_ctime = | |
2595 | gfc_build_library_function_decl (get_identifier (PREFIX("ctime")), | |
2596 | void_type_node, | |
2597 | 3, | |
2598 | pchar_type_node, | |
2599 | gfc_charlen_type_node, | |
2600 | gfc_int8_type_node); | |
2601 | ||
a39fafac FXC |
2602 | gfor_fndecl_sc_kind = |
2603 | gfc_build_library_function_decl (get_identifier | |
2604 | (PREFIX("selected_char_kind")), | |
2605 | gfc_int4_type_node, 2, | |
2606 | gfc_charlen_type_node, pchar_type_node); | |
2607 | ||
6de9cd9a | 2608 | gfor_fndecl_si_kind = |
e6472bce FXC |
2609 | gfc_build_library_function_decl (get_identifier |
2610 | (PREFIX("selected_int_kind")), | |
a39fafac | 2611 | gfc_int4_type_node, 1, pvoid_type_node); |
6de9cd9a DN |
2612 | |
2613 | gfor_fndecl_sr_kind = | |
7389bce6 | 2614 | gfc_build_library_function_decl (get_identifier |
e6472bce | 2615 | (PREFIX("selected_real_kind")), |
a39fafac FXC |
2616 | gfc_int4_type_node, 2, |
2617 | pvoid_type_node, pvoid_type_node); | |
6de9cd9a | 2618 | |
6de9cd9a | 2619 | /* Power functions. */ |
5b200ac2 | 2620 | { |
644cb69f FXC |
2621 | tree ctype, rtype, itype, jtype; |
2622 | int rkind, ikind, jkind; | |
2623 | #define NIKINDS 3 | |
2624 | #define NRKINDS 4 | |
2625 | static int ikinds[NIKINDS] = {4, 8, 16}; | |
2626 | static int rkinds[NRKINDS] = {4, 8, 10, 16}; | |
2627 | char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */ | |
2628 | ||
2629 | for (ikind=0; ikind < NIKINDS; ikind++) | |
5b200ac2 | 2630 | { |
644cb69f FXC |
2631 | itype = gfc_get_int_type (ikinds[ikind]); |
2632 | ||
2633 | for (jkind=0; jkind < NIKINDS; jkind++) | |
2634 | { | |
2635 | jtype = gfc_get_int_type (ikinds[jkind]); | |
2636 | if (itype && jtype) | |
2637 | { | |
2638 | sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind], | |
2639 | ikinds[jkind]); | |
2640 | gfor_fndecl_math_powi[jkind][ikind].integer = | |
2641 | gfc_build_library_function_decl (get_identifier (name), | |
2642 | jtype, 2, jtype, itype); | |
67fdae36 | 2643 | TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
644cb69f FXC |
2644 | } |
2645 | } | |
2646 | ||
2647 | for (rkind = 0; rkind < NRKINDS; rkind ++) | |
5b200ac2 | 2648 | { |
644cb69f FXC |
2649 | rtype = gfc_get_real_type (rkinds[rkind]); |
2650 | if (rtype && itype) | |
2651 | { | |
2652 | sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind], | |
2653 | ikinds[ikind]); | |
2654 | gfor_fndecl_math_powi[rkind][ikind].real = | |
2655 | gfc_build_library_function_decl (get_identifier (name), | |
2656 | rtype, 2, rtype, itype); | |
67fdae36 | 2657 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
644cb69f FXC |
2658 | } |
2659 | ||
2660 | ctype = gfc_get_complex_type (rkinds[rkind]); | |
2661 | if (ctype && itype) | |
2662 | { | |
2663 | sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind], | |
2664 | ikinds[ikind]); | |
2665 | gfor_fndecl_math_powi[rkind][ikind].cmplx = | |
2666 | gfc_build_library_function_decl (get_identifier (name), | |
2667 | ctype, 2,ctype, itype); | |
67fdae36 | 2668 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
644cb69f | 2669 | } |
5b200ac2 FW |
2670 | } |
2671 | } | |
644cb69f FXC |
2672 | #undef NIKINDS |
2673 | #undef NRKINDS | |
5b200ac2 FW |
2674 | } |
2675 | ||
6de9cd9a DN |
2676 | gfor_fndecl_math_ishftc4 = |
2677 | gfc_build_library_function_decl (get_identifier (PREFIX("ishftc4")), | |
2678 | gfc_int4_type_node, | |
2679 | 3, gfc_int4_type_node, | |
2680 | gfc_int4_type_node, gfc_int4_type_node); | |
2681 | gfor_fndecl_math_ishftc8 = | |
2682 | gfc_build_library_function_decl (get_identifier (PREFIX("ishftc8")), | |
2683 | gfc_int8_type_node, | |
2684 | 3, gfc_int8_type_node, | |
644cb69f FXC |
2685 | gfc_int4_type_node, gfc_int4_type_node); |
2686 | if (gfc_int16_type_node) | |
2687 | gfor_fndecl_math_ishftc16 = | |
2688 | gfc_build_library_function_decl (get_identifier (PREFIX("ishftc16")), | |
2689 | gfc_int16_type_node, 3, | |
2690 | gfc_int16_type_node, | |
2691 | gfc_int4_type_node, | |
2692 | gfc_int4_type_node); | |
2693 | ||
5a0aad31 FXC |
2694 | /* BLAS functions. */ |
2695 | { | |
dd52ecb0 | 2696 | tree pint = build_pointer_type (integer_type_node); |
5a0aad31 FXC |
2697 | tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind)); |
2698 | tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind)); | |
2699 | tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind)); | |
2700 | tree pz = build_pointer_type | |
2701 | (gfc_get_complex_type (gfc_default_double_kind)); | |
2702 | ||
2703 | gfor_fndecl_sgemm = gfc_build_library_function_decl | |
2704 | (get_identifier | |
2705 | (gfc_option.flag_underscoring ? "sgemm_" | |
2706 | : "sgemm"), | |
2707 | void_type_node, 15, pchar_type_node, | |
2708 | pchar_type_node, pint, pint, pint, ps, ps, pint, | |
dd52ecb0 JB |
2709 | ps, pint, ps, ps, pint, integer_type_node, |
2710 | integer_type_node); | |
5a0aad31 FXC |
2711 | gfor_fndecl_dgemm = gfc_build_library_function_decl |
2712 | (get_identifier | |
2713 | (gfc_option.flag_underscoring ? "dgemm_" | |
2714 | : "dgemm"), | |
2715 | void_type_node, 15, pchar_type_node, | |
2716 | pchar_type_node, pint, pint, pint, pd, pd, pint, | |
dd52ecb0 JB |
2717 | pd, pint, pd, pd, pint, integer_type_node, |
2718 | integer_type_node); | |
5a0aad31 FXC |
2719 | gfor_fndecl_cgemm = gfc_build_library_function_decl |
2720 | (get_identifier | |
2721 | (gfc_option.flag_underscoring ? "cgemm_" | |
2722 | : "cgemm"), | |
2723 | void_type_node, 15, pchar_type_node, | |
2724 | pchar_type_node, pint, pint, pint, pc, pc, pint, | |
dd52ecb0 JB |
2725 | pc, pint, pc, pc, pint, integer_type_node, |
2726 | integer_type_node); | |
5a0aad31 FXC |
2727 | gfor_fndecl_zgemm = gfc_build_library_function_decl |
2728 | (get_identifier | |
2729 | (gfc_option.flag_underscoring ? "zgemm_" | |
2730 | : "zgemm"), | |
2731 | void_type_node, 15, pchar_type_node, | |
2732 | pchar_type_node, pint, pint, pint, pz, pz, pint, | |
dd52ecb0 JB |
2733 | pz, pint, pz, pz, pint, integer_type_node, |
2734 | integer_type_node); | |
5a0aad31 FXC |
2735 | } |
2736 | ||
6de9cd9a DN |
2737 | /* Other functions. */ |
2738 | gfor_fndecl_size0 = | |
2739 | gfc_build_library_function_decl (get_identifier (PREFIX("size0")), | |
2740 | gfc_array_index_type, | |
2741 | 1, pvoid_type_node); | |
2742 | gfor_fndecl_size1 = | |
2743 | gfc_build_library_function_decl (get_identifier (PREFIX("size1")), | |
2744 | gfc_array_index_type, | |
2745 | 2, pvoid_type_node, | |
2746 | gfc_array_index_type); | |
b41b2534 JB |
2747 | |
2748 | gfor_fndecl_iargc = | |
2749 | gfc_build_library_function_decl (get_identifier (PREFIX ("iargc")), | |
2750 | gfc_int4_type_node, | |
2751 | 0); | |
0a05c536 FXC |
2752 | |
2753 | if (gfc_type_for_size (128, true)) | |
2754 | { | |
2755 | tree uint128 = gfc_type_for_size (128, true); | |
2756 | ||
2757 | gfor_fndecl_clz128 = | |
2758 | gfc_build_library_function_decl (get_identifier (PREFIX ("clz128")), | |
2759 | integer_type_node, 1, uint128); | |
2760 | ||
2761 | gfor_fndecl_ctz128 = | |
2762 | gfc_build_library_function_decl (get_identifier (PREFIX ("ctz128")), | |
2763 | integer_type_node, 1, uint128); | |
2764 | } | |
6de9cd9a DN |
2765 | } |
2766 | ||
2767 | ||
2768 | /* Make prototypes for runtime library functions. */ | |
2769 | ||
2770 | void | |
2771 | gfc_build_builtin_function_decls (void) | |
2772 | { | |
e2cad04b | 2773 | tree gfc_int4_type_node = gfc_get_int_type (4); |
6de9cd9a DN |
2774 | |
2775 | gfor_fndecl_stop_numeric = | |
2776 | gfc_build_library_function_decl (get_identifier (PREFIX("stop_numeric")), | |
2777 | void_type_node, 1, gfc_int4_type_node); | |
6d1b0f92 | 2778 | /* STOP doesn't return. */ |
eed61baa TK |
2779 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1; |
2780 | ||
6d1b0f92 | 2781 | |
6de9cd9a DN |
2782 | gfor_fndecl_stop_string = |
2783 | gfc_build_library_function_decl (get_identifier (PREFIX("stop_string")), | |
2784 | void_type_node, 2, pchar_type_node, | |
6d1b0f92 JD |
2785 | gfc_int4_type_node); |
2786 | /* STOP doesn't return. */ | |
eed61baa | 2787 | TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1; |
6de9cd9a | 2788 | |
6d1b0f92 JD |
2789 | |
2790 | gfor_fndecl_error_stop_numeric = | |
2791 | gfc_build_library_function_decl (get_identifier (PREFIX("error_stop_numeric")), | |
2792 | void_type_node, 1, gfc_int4_type_node); | |
2793 | /* ERROR STOP doesn't return. */ | |
2794 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_numeric) = 1; | |
2795 | ||
2796 | ||
d0a4a61c TB |
2797 | gfor_fndecl_error_stop_string = |
2798 | gfc_build_library_function_decl (get_identifier (PREFIX("error_stop_string")), | |
2799 | void_type_node, 2, pchar_type_node, | |
6d1b0f92 | 2800 | gfc_int4_type_node); |
d0a4a61c TB |
2801 | /* ERROR STOP doesn't return. */ |
2802 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_string) = 1; | |
2803 | ||
6d1b0f92 | 2804 | |
6de9cd9a DN |
2805 | gfor_fndecl_pause_numeric = |
2806 | gfc_build_library_function_decl (get_identifier (PREFIX("pause_numeric")), | |
2807 | void_type_node, 1, gfc_int4_type_node); | |
2808 | ||
2809 | gfor_fndecl_pause_string = | |
2810 | gfc_build_library_function_decl (get_identifier (PREFIX("pause_string")), | |
2811 | void_type_node, 2, pchar_type_node, | |
6d1b0f92 | 2812 | gfc_int4_type_node); |
6de9cd9a | 2813 | |
6de9cd9a DN |
2814 | gfor_fndecl_runtime_error = |
2815 | gfc_build_library_function_decl (get_identifier (PREFIX("runtime_error")), | |
c8fe94c7 | 2816 | void_type_node, -1, pchar_type_node); |
16275f18 SB |
2817 | /* The runtime_error function does not return. */ |
2818 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1; | |
6de9cd9a | 2819 | |
f96d606f JD |
2820 | gfor_fndecl_runtime_error_at = |
2821 | gfc_build_library_function_decl (get_identifier (PREFIX("runtime_error_at")), | |
c8fe94c7 | 2822 | void_type_node, -2, pchar_type_node, |
f96d606f JD |
2823 | pchar_type_node); |
2824 | /* The runtime_error_at function does not return. */ | |
2825 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1; | |
2826 | ||
0d52899f TB |
2827 | gfor_fndecl_runtime_warning_at = |
2828 | gfc_build_library_function_decl (get_identifier (PREFIX("runtime_warning_at")), | |
2829 | void_type_node, -2, pchar_type_node, | |
2830 | pchar_type_node); | |
f96d606f JD |
2831 | gfor_fndecl_generate_error = |
2832 | gfc_build_library_function_decl (get_identifier (PREFIX("generate_error")), | |
2833 | void_type_node, 3, pvoid_type_node, | |
dd52ecb0 | 2834 | integer_type_node, pchar_type_node); |
f96d606f | 2835 | |
1529b8d9 FXC |
2836 | gfor_fndecl_os_error = |
2837 | gfc_build_library_function_decl (get_identifier (PREFIX("os_error")), | |
2838 | void_type_node, 1, pchar_type_node); | |
2839 | /* The runtime_error function does not return. */ | |
2840 | TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1; | |
2841 | ||
092231a8 TB |
2842 | gfor_fndecl_set_args = |
2843 | gfc_build_library_function_decl (get_identifier (PREFIX("set_args")), | |
2844 | void_type_node, 2, integer_type_node, | |
2845 | build_pointer_type (pchar_type_node)); | |
2846 | ||
944b8b35 FXC |
2847 | gfor_fndecl_set_fpe = |
2848 | gfc_build_library_function_decl (get_identifier (PREFIX("set_fpe")), | |
dd52ecb0 | 2849 | void_type_node, 1, integer_type_node); |
944b8b35 | 2850 | |
68d2e027 JD |
2851 | /* Keep the array dimension in sync with the call, later in this file. */ |
2852 | gfor_fndecl_set_options = | |
2853 | gfc_build_library_function_decl (get_identifier (PREFIX("set_options")), | |
dd52ecb0 | 2854 | void_type_node, 2, integer_type_node, |
092231a8 | 2855 | build_pointer_type (integer_type_node)); |
8b67b708 | 2856 | |
eaa90d25 TK |
2857 | gfor_fndecl_set_convert = |
2858 | gfc_build_library_function_decl (get_identifier (PREFIX("set_convert")), | |
dd52ecb0 | 2859 | void_type_node, 1, integer_type_node); |
eaa90d25 | 2860 | |
d67ab5ee TK |
2861 | gfor_fndecl_set_record_marker = |
2862 | gfc_build_library_function_decl (get_identifier (PREFIX("set_record_marker")), | |
dd52ecb0 | 2863 | void_type_node, 1, integer_type_node); |
d67ab5ee | 2864 | |
07b3bbf2 TK |
2865 | gfor_fndecl_set_max_subrecord_length = |
2866 | gfc_build_library_function_decl (get_identifier (PREFIX("set_max_subrecord_length")), | |
dd52ecb0 | 2867 | void_type_node, 1, integer_type_node); |
07b3bbf2 | 2868 | |
0b7b376d RG |
2869 | gfor_fndecl_in_pack = gfc_build_library_function_decl_with_spec ( |
2870 | get_identifier (PREFIX("internal_pack")), ".r", | |
6de9cd9a DN |
2871 | pvoid_type_node, 1, pvoid_type_node); |
2872 | ||
0b7b376d RG |
2873 | gfor_fndecl_in_unpack = gfc_build_library_function_decl_with_spec ( |
2874 | get_identifier (PREFIX("internal_unpack")), ".wR", | |
7e4b97c7 | 2875 | void_type_node, 2, pvoid_type_node, pvoid_type_node); |
6de9cd9a DN |
2876 | |
2877 | gfor_fndecl_associated = | |
2878 | gfc_build_library_function_decl ( | |
2879 | get_identifier (PREFIX("associated")), | |
8a09ef91 | 2880 | integer_type_node, 2, ppvoid_type_node, |
6de9cd9a DN |
2881 | ppvoid_type_node); |
2882 | ||
2883 | gfc_build_intrinsic_function_decls (); | |
2884 | gfc_build_intrinsic_lib_fndecls (); | |
2885 | gfc_build_io_library_fndecls (); | |
2886 | } | |
2887 | ||
2888 | ||
1f2959f0 | 2889 | /* Evaluate the length of dummy character variables. */ |
6de9cd9a DN |
2890 | |
2891 | static tree | |
417ab240 | 2892 | gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, tree fnbody) |
6de9cd9a DN |
2893 | { |
2894 | stmtblock_t body; | |
2895 | ||
faf28b3a | 2896 | gfc_finish_decl (cl->backend_decl); |
6de9cd9a DN |
2897 | |
2898 | gfc_start_block (&body); | |
2899 | ||
2900 | /* Evaluate the string length expression. */ | |
4b7f8314 | 2901 | gfc_conv_string_length (cl, NULL, &body); |
417ab240 JJ |
2902 | |
2903 | gfc_trans_vla_type_sizes (sym, &body); | |
2904 | ||
6de9cd9a DN |
2905 | gfc_add_expr_to_block (&body, fnbody); |
2906 | return gfc_finish_block (&body); | |
2907 | } | |
2908 | ||
2909 | ||
2910 | /* Allocate and cleanup an automatic character variable. */ | |
2911 | ||
2912 | static tree | |
2913 | gfc_trans_auto_character_variable (gfc_symbol * sym, tree fnbody) | |
2914 | { | |
2915 | stmtblock_t body; | |
2916 | tree decl; | |
6de9cd9a DN |
2917 | tree tmp; |
2918 | ||
6e45f57b | 2919 | gcc_assert (sym->backend_decl); |
bc21d315 | 2920 | gcc_assert (sym->ts.u.cl && sym->ts.u.cl->length); |
6de9cd9a DN |
2921 | |
2922 | gfc_start_block (&body); | |
2923 | ||
2924 | /* Evaluate the string length expression. */ | |
bc21d315 | 2925 | gfc_conv_string_length (sym->ts.u.cl, NULL, &body); |
6de9cd9a | 2926 | |
417ab240 JJ |
2927 | gfc_trans_vla_type_sizes (sym, &body); |
2928 | ||
6de9cd9a DN |
2929 | decl = sym->backend_decl; |
2930 | ||
1a186ec5 | 2931 | /* Emit a DECL_EXPR for this variable, which will cause the |
4ab2db93 | 2932 | gimplifier to allocate storage, and all that good stuff. */ |
44855d8c | 2933 | tmp = fold_build1 (DECL_EXPR, TREE_TYPE (decl), decl); |
6de9cd9a | 2934 | gfc_add_expr_to_block (&body, tmp); |
1a186ec5 | 2935 | |
6de9cd9a DN |
2936 | gfc_add_expr_to_block (&body, fnbody); |
2937 | return gfc_finish_block (&body); | |
2938 | } | |
2939 | ||
910450c1 FW |
2940 | /* Set the initial value of ASSIGN statement auxiliary variable explicitly. */ |
2941 | ||
2942 | static tree | |
2943 | gfc_trans_assign_aux_var (gfc_symbol * sym, tree fnbody) | |
2944 | { | |
2945 | stmtblock_t body; | |
2946 | ||
2947 | gcc_assert (sym->backend_decl); | |
2948 | gfc_start_block (&body); | |
2949 | ||
2950 | /* Set the initial value to length. See the comments in | |
2951 | function gfc_add_assign_aux_vars in this file. */ | |
726a989a | 2952 | gfc_add_modify (&body, GFC_DECL_STRING_LEN (sym->backend_decl), |
910450c1 FW |
2953 | build_int_cst (NULL_TREE, -2)); |
2954 | ||
2955 | gfc_add_expr_to_block (&body, fnbody); | |
2956 | return gfc_finish_block (&body); | |
2957 | } | |
2958 | ||
417ab240 JJ |
2959 | static void |
2960 | gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body) | |
2961 | { | |
2962 | tree t = *tp, var, val; | |
2963 | ||
2964 | if (t == NULL || t == error_mark_node) | |
2965 | return; | |
2966 | if (TREE_CONSTANT (t) || DECL_P (t)) | |
2967 | return; | |
2968 | ||
2969 | if (TREE_CODE (t) == SAVE_EXPR) | |
2970 | { | |
2971 | if (SAVE_EXPR_RESOLVED_P (t)) | |
2972 | { | |
2973 | *tp = TREE_OPERAND (t, 0); | |
2974 | return; | |
2975 | } | |
2976 | val = TREE_OPERAND (t, 0); | |
2977 | } | |
2978 | else | |
2979 | val = t; | |
2980 | ||
2981 | var = gfc_create_var_np (TREE_TYPE (t), NULL); | |
2982 | gfc_add_decl_to_function (var); | |
726a989a | 2983 | gfc_add_modify (body, var, val); |
417ab240 JJ |
2984 | if (TREE_CODE (t) == SAVE_EXPR) |
2985 | TREE_OPERAND (t, 0) = var; | |
2986 | *tp = var; | |
2987 | } | |
2988 | ||
2989 | static void | |
2990 | gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body) | |
2991 | { | |
2992 | tree t; | |
2993 | ||
2994 | if (type == NULL || type == error_mark_node) | |
2995 | return; | |
2996 | ||
2997 | type = TYPE_MAIN_VARIANT (type); | |
2998 | ||
2999 | if (TREE_CODE (type) == INTEGER_TYPE) | |
3000 | { | |
3001 | gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body); | |
3002 | gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body); | |
3003 | ||
3004 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3005 | { | |
3006 | TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type); | |
3007 | TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type); | |
3008 | } | |
3009 | } | |
3010 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
3011 | { | |
3012 | gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body); | |
3013 | gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body); | |
3014 | gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body); | |
3015 | gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body); | |
3016 | ||
3017 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3018 | { | |
3019 | TYPE_SIZE (t) = TYPE_SIZE (type); | |
3020 | TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type); | |
3021 | } | |
3022 | } | |
3023 | } | |
3024 | ||
3025 | /* Make sure all type sizes and array domains are either constant, | |
3026 | or variable or parameter decls. This is a simplified variant | |
3027 | of gimplify_type_sizes, but we can't use it here, as none of the | |
3028 | variables in the expressions have been gimplified yet. | |
3029 | As type sizes and domains for various variable length arrays | |
3030 | contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars | |
3031 | time, without this routine gimplify_type_sizes in the middle-end | |
3032 | could result in the type sizes being gimplified earlier than where | |
3033 | those variables are initialized. */ | |
3034 | ||
3035 | void | |
3036 | gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body) | |
3037 | { | |
3038 | tree type = TREE_TYPE (sym->backend_decl); | |
3039 | ||
3040 | if (TREE_CODE (type) == FUNCTION_TYPE | |
3041 | && (sym->attr.function || sym->attr.result || sym->attr.entry)) | |
3042 | { | |
3043 | if (! current_fake_result_decl) | |
3044 | return; | |
3045 | ||
3046 | type = TREE_TYPE (TREE_VALUE (current_fake_result_decl)); | |
3047 | } | |
3048 | ||
3049 | while (POINTER_TYPE_P (type)) | |
3050 | type = TREE_TYPE (type); | |
3051 | ||
3052 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
3053 | { | |
3054 | tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type); | |
3055 | ||
3056 | while (POINTER_TYPE_P (etype)) | |
3057 | etype = TREE_TYPE (etype); | |
3058 | ||
3059 | gfc_trans_vla_type_sizes_1 (etype, body); | |
3060 | } | |
3061 | ||
3062 | gfc_trans_vla_type_sizes_1 (type, body); | |
3063 | } | |
3064 | ||
6de9cd9a | 3065 | |
b7b184a8 | 3066 | /* Initialize a derived type by building an lvalue from the symbol |
2b56d6a4 TB |
3067 | and using trans_assignment to do the work. Set dealloc to false |
3068 | if no deallocation prior the assignment is needed. */ | |
f40eccb0 | 3069 | tree |
2b56d6a4 | 3070 | gfc_init_default_dt (gfc_symbol * sym, tree body, bool dealloc) |
d3837072 PT |
3071 | { |
3072 | stmtblock_t fnblock; | |
b7b184a8 | 3073 | gfc_expr *e; |
d3837072 PT |
3074 | tree tmp; |
3075 | tree present; | |
3076 | ||
3077 | gfc_init_block (&fnblock); | |
b7b184a8 PT |
3078 | gcc_assert (!sym->attr.allocatable); |
3079 | gfc_set_sym_referenced (sym); | |
3080 | e = gfc_lval_expr_from_sym (sym); | |
2b56d6a4 | 3081 | tmp = gfc_trans_assignment (e, sym->value, false, dealloc); |
ba6f7079 TB |
3082 | if (sym->attr.dummy && (sym->attr.optional |
3083 | || sym->ns->proc_name->attr.entry_master)) | |
d3837072 | 3084 | { |
b7b184a8 PT |
3085 | present = gfc_conv_expr_present (sym); |
3086 | tmp = build3 (COND_EXPR, TREE_TYPE (tmp), present, | |
c2255bc4 | 3087 | tmp, build_empty_stmt (input_location)); |
d3837072 | 3088 | } |
b7b184a8 PT |
3089 | gfc_add_expr_to_block (&fnblock, tmp); |
3090 | gfc_free_expr (e); | |
f40eccb0 PT |
3091 | if (body) |
3092 | gfc_add_expr_to_block (&fnblock, body); | |
d3837072 PT |
3093 | return gfc_finish_block (&fnblock); |
3094 | } | |
3095 | ||
3096 | ||
2c69d527 PT |
3097 | /* Initialize INTENT(OUT) derived type dummies. As well as giving |
3098 | them their default initializer, if they do not have allocatable | |
3099 | components, they have their allocatable components deallocated. */ | |
3100 | ||
b7b184a8 PT |
3101 | static tree |
3102 | init_intent_out_dt (gfc_symbol * proc_sym, tree body) | |
3103 | { | |
3104 | stmtblock_t fnblock; | |
3105 | gfc_formal_arglist *f; | |
2c69d527 | 3106 | tree tmp; |
8a272531 | 3107 | tree present; |
b7b184a8 PT |
3108 | |
3109 | gfc_init_block (&fnblock); | |
3110 | for (f = proc_sym->formal; f; f = f->next) | |
3111 | if (f->sym && f->sym->attr.intent == INTENT_OUT | |
758e12af TB |
3112 | && !f->sym->attr.pointer |
3113 | && f->sym->ts.type == BT_DERIVED) | |
2c69d527 | 3114 | { |
ba6f7079 | 3115 | if (f->sym->ts.u.derived->attr.alloc_comp && !f->sym->value) |
2c69d527 | 3116 | { |
bc21d315 | 3117 | tmp = gfc_deallocate_alloc_comp (f->sym->ts.u.derived, |
2c69d527 PT |
3118 | f->sym->backend_decl, |
3119 | f->sym->as ? f->sym->as->rank : 0); | |
8a272531 | 3120 | |
ba6f7079 TB |
3121 | if (f->sym->attr.optional |
3122 | || f->sym->ns->proc_name->attr.entry_master) | |
3123 | { | |
3124 | present = gfc_conv_expr_present (f->sym); | |
3125 | tmp = build3 (COND_EXPR, TREE_TYPE (tmp), present, | |
3126 | tmp, build_empty_stmt (input_location)); | |
3127 | } | |
8a272531 | 3128 | |
2c69d527 PT |
3129 | gfc_add_expr_to_block (&fnblock, tmp); |
3130 | } | |
ba6f7079 | 3131 | else if (f->sym->value) |
2b56d6a4 | 3132 | body = gfc_init_default_dt (f->sym, body, true); |
2c69d527 | 3133 | } |
b7b184a8 PT |
3134 | |
3135 | gfc_add_expr_to_block (&fnblock, body); | |
3136 | return gfc_finish_block (&fnblock); | |
3137 | } | |
3138 | ||
d3837072 | 3139 | |
6de9cd9a DN |
3140 | /* Generate function entry and exit code, and add it to the function body. |
3141 | This includes: | |
f8d0aee5 | 3142 | Allocation and initialization of array variables. |
6de9cd9a | 3143 | Allocation of character string variables. |
910450c1 | 3144 | Initialization and possibly repacking of dummy arrays. |
1517fd57 JW |
3145 | Initialization of ASSIGN statement auxiliary variable. |
3146 | Automatic deallocation. */ | |
6de9cd9a | 3147 | |
9abe5e56 | 3148 | tree |
6de9cd9a DN |
3149 | gfc_trans_deferred_vars (gfc_symbol * proc_sym, tree fnbody) |
3150 | { | |
3151 | locus loc; | |
3152 | gfc_symbol *sym; | |
417ab240 JJ |
3153 | gfc_formal_arglist *f; |
3154 | stmtblock_t body; | |
7114edca | 3155 | bool seen_trans_deferred_array = false; |
6de9cd9a DN |
3156 | |
3157 | /* Deal with implicit return variables. Explicit return variables will | |
3158 | already have been added. */ | |
3159 | if (gfc_return_by_reference (proc_sym) && proc_sym->result == proc_sym) | |
3160 | { | |
3161 | if (!current_fake_result_decl) | |
3162 | { | |
d198b59a JJ |
3163 | gfc_entry_list *el = NULL; |
3164 | if (proc_sym->attr.entry_master) | |
3165 | { | |
3166 | for (el = proc_sym->ns->entries; el; el = el->next) | |
3167 | if (el->sym != el->sym->result) | |
3168 | break; | |
3169 | } | |
766d0c8c DF |
3170 | /* TODO: move to the appropriate place in resolve.c. */ |
3171 | if (warn_return_type && el == NULL) | |
3172 | gfc_warning ("Return value of function '%s' at %L not set", | |
3173 | proc_sym->name, &proc_sym->declared_at); | |
6de9cd9a | 3174 | } |
d198b59a | 3175 | else if (proc_sym->as) |
6de9cd9a | 3176 | { |
417ab240 JJ |
3177 | tree result = TREE_VALUE (current_fake_result_decl); |
3178 | fnbody = gfc_trans_dummy_array_bias (proc_sym, result, fnbody); | |
f5f701ad PT |
3179 | |
3180 | /* An automatic character length, pointer array result. */ | |
3181 | if (proc_sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
3182 | && TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) |
3183 | fnbody = gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, | |
f5f701ad | 3184 | fnbody); |
6de9cd9a DN |
3185 | } |
3186 | else if (proc_sym->ts.type == BT_CHARACTER) | |
3187 | { | |
bc21d315 JW |
3188 | if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) |
3189 | fnbody = gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, | |
417ab240 | 3190 | fnbody); |
6de9cd9a DN |
3191 | } |
3192 | else | |
973ff4c0 TS |
3193 | gcc_assert (gfc_option.flag_f2c |
3194 | && proc_sym->ts.type == BT_COMPLEX); | |
6de9cd9a DN |
3195 | } |
3196 | ||
d3837072 PT |
3197 | /* Initialize the INTENT(OUT) derived type dummy arguments. This |
3198 | should be done here so that the offsets and lbounds of arrays | |
3199 | are available. */ | |
3200 | fnbody = init_intent_out_dt (proc_sym, fnbody); | |
3201 | ||
6de9cd9a DN |
3202 | for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink) |
3203 | { | |
5046aff5 | 3204 | bool sym_has_alloc_comp = (sym->ts.type == BT_DERIVED) |
bc21d315 | 3205 | && sym->ts.u.derived->attr.alloc_comp; |
6de9cd9a DN |
3206 | if (sym->attr.dimension) |
3207 | { | |
3208 | switch (sym->as->type) | |
3209 | { | |
3210 | case AS_EXPLICIT: | |
3211 | if (sym->attr.dummy || sym->attr.result) | |
3212 | fnbody = | |
3213 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, fnbody); | |
3214 | else if (sym->attr.pointer || sym->attr.allocatable) | |
3215 | { | |
3216 | if (TREE_STATIC (sym->backend_decl)) | |
3217 | gfc_trans_static_array_pointer (sym); | |
3218 | else | |
7114edca PT |
3219 | { |
3220 | seen_trans_deferred_array = true; | |
3221 | fnbody = gfc_trans_deferred_array (sym, fnbody); | |
3222 | } | |
6de9cd9a DN |
3223 | } |
3224 | else | |
3225 | { | |
7114edca PT |
3226 | if (sym_has_alloc_comp) |
3227 | { | |
3228 | seen_trans_deferred_array = true; | |
3229 | fnbody = gfc_trans_deferred_array (sym, fnbody); | |
3230 | } | |
b7b184a8 PT |
3231 | else if (sym->ts.type == BT_DERIVED |
3232 | && sym->value | |
3233 | && !sym->attr.data | |
3234 | && sym->attr.save == SAVE_NONE) | |
2b56d6a4 | 3235 | fnbody = gfc_init_default_dt (sym, fnbody, false); |
7114edca | 3236 | |
6de9cd9a DN |
3237 | gfc_get_backend_locus (&loc); |
3238 | gfc_set_backend_locus (&sym->declared_at); | |
3239 | fnbody = gfc_trans_auto_array_allocation (sym->backend_decl, | |
3240 | sym, fnbody); | |
3241 | gfc_set_backend_locus (&loc); | |
3242 | } | |
3243 | break; | |
3244 | ||
3245 | case AS_ASSUMED_SIZE: | |
3246 | /* Must be a dummy parameter. */ | |
b3aefde2 | 3247 | gcc_assert (sym->attr.dummy || sym->as->cp_was_assumed); |
6de9cd9a DN |
3248 | |
3249 | /* We should always pass assumed size arrays the g77 way. */ | |
b3aefde2 TB |
3250 | if (sym->attr.dummy) |
3251 | fnbody = gfc_trans_g77_array (sym, fnbody); | |
6de9cd9a DN |
3252 | break; |
3253 | ||
3254 | case AS_ASSUMED_SHAPE: | |
3255 | /* Must be a dummy parameter. */ | |
6e45f57b | 3256 | gcc_assert (sym->attr.dummy); |
6de9cd9a DN |
3257 | |
3258 | fnbody = gfc_trans_dummy_array_bias (sym, sym->backend_decl, | |
3259 | fnbody); | |
3260 | break; | |
3261 | ||
3262 | case AS_DEFERRED: | |
7114edca PT |
3263 | seen_trans_deferred_array = true; |
3264 | fnbody = gfc_trans_deferred_array (sym, fnbody); | |
6de9cd9a DN |
3265 | break; |
3266 | ||
3267 | default: | |
6e45f57b | 3268 | gcc_unreachable (); |
6de9cd9a | 3269 | } |
7114edca | 3270 | if (sym_has_alloc_comp && !seen_trans_deferred_array) |
5046aff5 | 3271 | fnbody = gfc_trans_deferred_array (sym, fnbody); |
6de9cd9a | 3272 | } |
1517fd57 JW |
3273 | else if (sym->attr.allocatable |
3274 | || (sym->ts.type == BT_CLASS | |
7a08eda1 | 3275 | && CLASS_DATA (sym)->attr.allocatable)) |
1517fd57 | 3276 | { |
64b33a7e TB |
3277 | if (!sym->attr.save) |
3278 | { | |
3279 | /* Nullify and automatic deallocation of allocatable | |
3280 | scalars. */ | |
3281 | tree tmp; | |
3282 | gfc_expr *e; | |
3283 | gfc_se se; | |
3284 | stmtblock_t block; | |
3285 | ||
3286 | e = gfc_lval_expr_from_sym (sym); | |
3287 | if (sym->ts.type == BT_CLASS) | |
3288 | gfc_add_component_ref (e, "$data"); | |
3289 | ||
3290 | gfc_init_se (&se, NULL); | |
3291 | se.want_pointer = 1; | |
3292 | gfc_conv_expr (&se, e); | |
3293 | gfc_free_expr (e); | |
3294 | ||
3295 | /* Nullify when entering the scope. */ | |
3296 | gfc_start_block (&block); | |
3297 | gfc_add_modify (&block, se.expr, | |
3298 | fold_convert (TREE_TYPE (se.expr), | |
3299 | null_pointer_node)); | |
3300 | gfc_add_expr_to_block (&block, fnbody); | |
3301 | ||
3302 | /* Deallocate when leaving the scope. Nullifying is not | |
3303 | needed. */ | |
3304 | tmp = gfc_deallocate_with_status (se.expr, NULL_TREE, true, | |
3305 | NULL); | |
3306 | gfc_add_expr_to_block (&block, tmp); | |
3307 | fnbody = gfc_finish_block (&block); | |
3308 | } | |
1517fd57 | 3309 | } |
3a28464c JW |
3310 | else if (sym_has_alloc_comp) |
3311 | fnbody = gfc_trans_deferred_array (sym, fnbody); | |
6de9cd9a DN |
3312 | else if (sym->ts.type == BT_CHARACTER) |
3313 | { | |
3314 | gfc_get_backend_locus (&loc); | |
3315 | gfc_set_backend_locus (&sym->declared_at); | |
3316 | if (sym->attr.dummy || sym->attr.result) | |
bc21d315 | 3317 | fnbody = gfc_trans_dummy_character (sym, sym->ts.u.cl, fnbody); |
6de9cd9a DN |
3318 | else |
3319 | fnbody = gfc_trans_auto_character_variable (sym, fnbody); | |
3320 | gfc_set_backend_locus (&loc); | |
3321 | } | |
910450c1 FW |
3322 | else if (sym->attr.assign) |
3323 | { | |
3324 | gfc_get_backend_locus (&loc); | |
3325 | gfc_set_backend_locus (&sym->declared_at); | |
3326 | fnbody = gfc_trans_assign_aux_var (sym, fnbody); | |
3327 | gfc_set_backend_locus (&loc); | |
3328 | } | |
b7b184a8 PT |
3329 | else if (sym->ts.type == BT_DERIVED |
3330 | && sym->value | |
3331 | && !sym->attr.data | |
3332 | && sym->attr.save == SAVE_NONE) | |
2b56d6a4 | 3333 | fnbody = gfc_init_default_dt (sym, fnbody, false); |
6de9cd9a | 3334 | else |
6e45f57b | 3335 | gcc_unreachable (); |
6de9cd9a DN |
3336 | } |
3337 | ||
417ab240 JJ |
3338 | gfc_init_block (&body); |
3339 | ||
3340 | for (f = proc_sym->formal; f; f = f->next) | |
08113c73 PT |
3341 | { |
3342 | if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER) | |
3343 | { | |
bc21d315 JW |
3344 | gcc_assert (f->sym->ts.u.cl->backend_decl != NULL); |
3345 | if (TREE_CODE (f->sym->ts.u.cl->backend_decl) == PARM_DECL) | |
08113c73 PT |
3346 | gfc_trans_vla_type_sizes (f->sym, &body); |
3347 | } | |
08113c73 | 3348 | } |
417ab240 JJ |
3349 | |
3350 | if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER | |
3351 | && current_fake_result_decl != NULL) | |
3352 | { | |
bc21d315 JW |
3353 | gcc_assert (proc_sym->ts.u.cl->backend_decl != NULL); |
3354 | if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == PARM_DECL) | |
417ab240 JJ |
3355 | gfc_trans_vla_type_sizes (proc_sym, &body); |
3356 | } | |
3357 | ||
3358 | gfc_add_expr_to_block (&body, fnbody); | |
3359 | return gfc_finish_block (&body); | |
6de9cd9a DN |
3360 | } |
3361 | ||
a64f5186 JJ |
3362 | static GTY ((param_is (struct module_htab_entry))) htab_t module_htab; |
3363 | ||
3364 | /* Hash and equality functions for module_htab. */ | |
3365 | ||
3366 | static hashval_t | |
3367 | module_htab_do_hash (const void *x) | |
3368 | { | |
3369 | return htab_hash_string (((const struct module_htab_entry *)x)->name); | |
3370 | } | |
3371 | ||
3372 | static int | |
3373 | module_htab_eq (const void *x1, const void *x2) | |
3374 | { | |
3375 | return strcmp ((((const struct module_htab_entry *)x1)->name), | |
3376 | (const char *)x2) == 0; | |
3377 | } | |
3378 | ||
3379 | /* Hash and equality functions for module_htab's decls. */ | |
3380 | ||
3381 | static hashval_t | |
3382 | module_htab_decls_hash (const void *x) | |
3383 | { | |
3384 | const_tree t = (const_tree) x; | |
3385 | const_tree n = DECL_NAME (t); | |
3386 | if (n == NULL_TREE) | |
3387 | n = TYPE_NAME (TREE_TYPE (t)); | |
afdda4b4 | 3388 | return htab_hash_string (IDENTIFIER_POINTER (n)); |
a64f5186 JJ |
3389 | } |
3390 | ||
3391 | static int | |
3392 | module_htab_decls_eq (const void *x1, const void *x2) | |
3393 | { | |
3394 | const_tree t1 = (const_tree) x1; | |
3395 | const_tree n1 = DECL_NAME (t1); | |
3396 | if (n1 == NULL_TREE) | |
3397 | n1 = TYPE_NAME (TREE_TYPE (t1)); | |
3398 | return strcmp (IDENTIFIER_POINTER (n1), (const char *) x2) == 0; | |
3399 | } | |
3400 | ||
3401 | struct module_htab_entry * | |
3402 | gfc_find_module (const char *name) | |
3403 | { | |
3404 | void **slot; | |
3405 | ||
3406 | if (! module_htab) | |
3407 | module_htab = htab_create_ggc (10, module_htab_do_hash, | |
3408 | module_htab_eq, NULL); | |
3409 | ||
3410 | slot = htab_find_slot_with_hash (module_htab, name, | |
3411 | htab_hash_string (name), INSERT); | |
3412 | if (*slot == NULL) | |
3413 | { | |
a9429e29 | 3414 | struct module_htab_entry *entry = ggc_alloc_cleared_module_htab_entry (); |
a64f5186 JJ |
3415 | |
3416 | entry->name = gfc_get_string (name); | |
3417 | entry->decls = htab_create_ggc (10, module_htab_decls_hash, | |
3418 | module_htab_decls_eq, NULL); | |
3419 | *slot = (void *) entry; | |
3420 | } | |
3421 | return (struct module_htab_entry *) *slot; | |
3422 | } | |
3423 | ||
3424 | void | |
3425 | gfc_module_add_decl (struct module_htab_entry *entry, tree decl) | |
3426 | { | |
3427 | void **slot; | |
3428 | const char *name; | |
3429 | ||
3430 | if (DECL_NAME (decl)) | |
3431 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
3432 | else | |
3433 | { | |
3434 | gcc_assert (TREE_CODE (decl) == TYPE_DECL); | |
3435 | name = IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))); | |
3436 | } | |
3437 | slot = htab_find_slot_with_hash (entry->decls, name, | |
3438 | htab_hash_string (name), INSERT); | |
3439 | if (*slot == NULL) | |
3440 | *slot = (void *) decl; | |
3441 | } | |
3442 | ||
3443 | static struct module_htab_entry *cur_module; | |
6de9cd9a DN |
3444 | |
3445 | /* Output an initialized decl for a module variable. */ | |
3446 | ||
3447 | static void | |
3448 | gfc_create_module_variable (gfc_symbol * sym) | |
3449 | { | |
3450 | tree decl; | |
6de9cd9a | 3451 | |
1a492601 PT |
3452 | /* Module functions with alternate entries are dealt with later and |
3453 | would get caught by the next condition. */ | |
3454 | if (sym->attr.entry) | |
3455 | return; | |
3456 | ||
a8b3b0b6 CR |
3457 | /* Make sure we convert the types of the derived types from iso_c_binding |
3458 | into (void *). */ | |
3459 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
3460 | && sym->ts.type == BT_DERIVED) | |
3461 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
3462 | ||
a64f5186 JJ |
3463 | if (sym->attr.flavor == FL_DERIVED |
3464 | && sym->backend_decl | |
3465 | && TREE_CODE (sym->backend_decl) == RECORD_TYPE) | |
3466 | { | |
3467 | decl = sym->backend_decl; | |
3468 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
b8849663 PT |
3469 | |
3470 | /* -fwhole-file mixes up the contexts so these asserts are unnecessary. */ | |
3471 | if (!(gfc_option.flag_whole_file && sym->attr.use_assoc)) | |
3472 | { | |
3473 | gcc_assert (TYPE_CONTEXT (decl) == NULL_TREE | |
3474 | || TYPE_CONTEXT (decl) == sym->ns->proc_name->backend_decl); | |
3475 | gcc_assert (DECL_CONTEXT (TYPE_STUB_DECL (decl)) == NULL_TREE | |
3476 | || DECL_CONTEXT (TYPE_STUB_DECL (decl)) | |
3477 | == sym->ns->proc_name->backend_decl); | |
3478 | } | |
a64f5186 JJ |
3479 | TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl; |
3480 | DECL_CONTEXT (TYPE_STUB_DECL (decl)) = sym->ns->proc_name->backend_decl; | |
3481 | gfc_module_add_decl (cur_module, TYPE_STUB_DECL (decl)); | |
3482 | } | |
3483 | ||
6e0d2de7 JW |
3484 | /* Only output variables, procedure pointers and array valued, |
3485 | or derived type, parameters. */ | |
6de9cd9a | 3486 | if (sym->attr.flavor != FL_VARIABLE |
fdc55763 | 3487 | && !(sym->attr.flavor == FL_PARAMETER |
6e0d2de7 JW |
3488 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) |
3489 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.proc_pointer)) | |
6de9cd9a DN |
3490 | return; |
3491 | ||
a64f5186 JJ |
3492 | if ((sym->attr.in_common || sym->attr.in_equivalence) && sym->backend_decl) |
3493 | { | |
3494 | decl = sym->backend_decl; | |
3495 | gcc_assert (DECL_CONTEXT (decl) == NULL_TREE); | |
3496 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
3497 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
3498 | gfc_module_add_decl (cur_module, decl); | |
3499 | } | |
3500 | ||
9cbf8b41 TS |
3501 | /* Don't generate variables from other modules. Variables from |
3502 | COMMONs will already have been generated. */ | |
3503 | if (sym->attr.use_assoc || sym->attr.in_common) | |
6de9cd9a DN |
3504 | return; |
3505 | ||
30aabb86 | 3506 | /* Equivalenced variables arrive here after creation. */ |
b95605fb | 3507 | if (sym->backend_decl |
a64f5186 JJ |
3508 | && (sym->equiv_built || sym->attr.in_equivalence)) |
3509 | return; | |
30aabb86 | 3510 | |
7c1dab0d | 3511 | if (sym->backend_decl && !sym->attr.vtab) |
6de9cd9a DN |
3512 | internal_error ("backend decl for module variable %s already exists", |
3513 | sym->name); | |
3514 | ||
3515 | /* We always want module variables to be created. */ | |
3516 | sym->attr.referenced = 1; | |
3517 | /* Create the decl. */ | |
3518 | decl = gfc_get_symbol_decl (sym); | |
3519 | ||
6de9cd9a DN |
3520 | /* Create the variable. */ |
3521 | pushdecl (decl); | |
a64f5186 JJ |
3522 | gcc_assert (DECL_CONTEXT (decl) == NULL_TREE); |
3523 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
3524 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
0e6df31e | 3525 | rest_of_decl_compilation (decl, 1, 0); |
a64f5186 | 3526 | gfc_module_add_decl (cur_module, decl); |
6de9cd9a DN |
3527 | |
3528 | /* Also add length of strings. */ | |
3529 | if (sym->ts.type == BT_CHARACTER) | |
3530 | { | |
3531 | tree length; | |
3532 | ||
bc21d315 | 3533 | length = sym->ts.u.cl->backend_decl; |
9c4174d8 PT |
3534 | gcc_assert (length || sym->attr.proc_pointer); |
3535 | if (length && !INTEGER_CST_P (length)) | |
6de9cd9a DN |
3536 | { |
3537 | pushdecl (length); | |
0e6df31e | 3538 | rest_of_decl_compilation (length, 1, 0); |
6de9cd9a DN |
3539 | } |
3540 | } | |
3541 | } | |
3542 | ||
9268ba9a | 3543 | /* Emit debug information for USE statements. */ |
a64f5186 JJ |
3544 | |
3545 | static void | |
3546 | gfc_trans_use_stmts (gfc_namespace * ns) | |
3547 | { | |
3548 | gfc_use_list *use_stmt; | |
3549 | for (use_stmt = ns->use_stmts; use_stmt; use_stmt = use_stmt->next) | |
3550 | { | |
3551 | struct module_htab_entry *entry | |
3552 | = gfc_find_module (use_stmt->module_name); | |
3553 | gfc_use_rename *rent; | |
3554 | ||
3555 | if (entry->namespace_decl == NULL) | |
3556 | { | |
3557 | entry->namespace_decl | |
c2255bc4 AH |
3558 | = build_decl (input_location, |
3559 | NAMESPACE_DECL, | |
a64f5186 JJ |
3560 | get_identifier (use_stmt->module_name), |
3561 | void_type_node); | |
3562 | DECL_EXTERNAL (entry->namespace_decl) = 1; | |
3563 | } | |
9268ba9a | 3564 | gfc_set_backend_locus (&use_stmt->where); |
a64f5186 JJ |
3565 | if (!use_stmt->only_flag) |
3566 | (*debug_hooks->imported_module_or_decl) (entry->namespace_decl, | |
3567 | NULL_TREE, | |
3568 | ns->proc_name->backend_decl, | |
3569 | false); | |
3570 | for (rent = use_stmt->rename; rent; rent = rent->next) | |
3571 | { | |
3572 | tree decl, local_name; | |
3573 | void **slot; | |
3574 | ||
3575 | if (rent->op != INTRINSIC_NONE) | |
3576 | continue; | |
3577 | ||
3578 | slot = htab_find_slot_with_hash (entry->decls, rent->use_name, | |
3579 | htab_hash_string (rent->use_name), | |
3580 | INSERT); | |
3581 | if (*slot == NULL) | |
3582 | { | |
3583 | gfc_symtree *st; | |
3584 | ||
3585 | st = gfc_find_symtree (ns->sym_root, | |
3586 | rent->local_name[0] | |
3587 | ? rent->local_name : rent->use_name); | |
1151ccc9 PT |
3588 | gcc_assert (st); |
3589 | ||
3590 | /* Sometimes, generic interfaces wind up being over-ruled by a | |
3591 | local symbol (see PR41062). */ | |
3592 | if (!st->n.sym->attr.use_assoc) | |
3593 | continue; | |
3594 | ||
9268ba9a JJ |
3595 | if (st->n.sym->backend_decl |
3596 | && DECL_P (st->n.sym->backend_decl) | |
3597 | && st->n.sym->module | |
3598 | && strcmp (st->n.sym->module, use_stmt->module_name) == 0) | |
a64f5186 | 3599 | { |
9268ba9a JJ |
3600 | gcc_assert (DECL_EXTERNAL (entry->namespace_decl) |
3601 | || (TREE_CODE (st->n.sym->backend_decl) | |
3602 | != VAR_DECL)); | |
a64f5186 JJ |
3603 | decl = copy_node (st->n.sym->backend_decl); |
3604 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
3605 | DECL_EXTERNAL (decl) = 1; | |
3606 | DECL_IGNORED_P (decl) = 0; | |
3607 | DECL_INITIAL (decl) = NULL_TREE; | |
3608 | } | |
3609 | else | |
3610 | { | |
3611 | *slot = error_mark_node; | |
3612 | htab_clear_slot (entry->decls, slot); | |
3613 | continue; | |
3614 | } | |
3615 | *slot = decl; | |
3616 | } | |
3617 | decl = (tree) *slot; | |
3618 | if (rent->local_name[0]) | |
3619 | local_name = get_identifier (rent->local_name); | |
3620 | else | |
3621 | local_name = NULL_TREE; | |
9268ba9a | 3622 | gfc_set_backend_locus (&rent->where); |
a64f5186 JJ |
3623 | (*debug_hooks->imported_module_or_decl) (decl, local_name, |
3624 | ns->proc_name->backend_decl, | |
3625 | !use_stmt->only_flag); | |
3626 | } | |
3627 | } | |
6de9cd9a DN |
3628 | } |
3629 | ||
9268ba9a | 3630 | |
bd11e37d JJ |
3631 | /* Return true if expr is a constant initializer that gfc_conv_initializer |
3632 | will handle. */ | |
3633 | ||
3634 | static bool | |
3635 | check_constant_initializer (gfc_expr *expr, gfc_typespec *ts, bool array, | |
3636 | bool pointer) | |
3637 | { | |
3638 | gfc_constructor *c; | |
3639 | gfc_component *cm; | |
3640 | ||
3641 | if (pointer) | |
3642 | return true; | |
3643 | else if (array) | |
3644 | { | |
3645 | if (expr->expr_type == EXPR_CONSTANT || expr->expr_type == EXPR_NULL) | |
3646 | return true; | |
3647 | else if (expr->expr_type == EXPR_STRUCTURE) | |
3648 | return check_constant_initializer (expr, ts, false, false); | |
3649 | else if (expr->expr_type != EXPR_ARRAY) | |
3650 | return false; | |
b7e75771 JD |
3651 | for (c = gfc_constructor_first (expr->value.constructor); |
3652 | c; c = gfc_constructor_next (c)) | |
bd11e37d JJ |
3653 | { |
3654 | if (c->iterator) | |
3655 | return false; | |
3656 | if (c->expr->expr_type == EXPR_STRUCTURE) | |
3657 | { | |
3658 | if (!check_constant_initializer (c->expr, ts, false, false)) | |
3659 | return false; | |
3660 | } | |
3661 | else if (c->expr->expr_type != EXPR_CONSTANT) | |
3662 | return false; | |
3663 | } | |
3664 | return true; | |
3665 | } | |
3666 | else switch (ts->type) | |
3667 | { | |
3668 | case BT_DERIVED: | |
3669 | if (expr->expr_type != EXPR_STRUCTURE) | |
3670 | return false; | |
bc21d315 | 3671 | cm = expr->ts.u.derived->components; |
b7e75771 JD |
3672 | for (c = gfc_constructor_first (expr->value.constructor); |
3673 | c; c = gfc_constructor_next (c), cm = cm->next) | |
bd11e37d JJ |
3674 | { |
3675 | if (!c->expr || cm->attr.allocatable) | |
3676 | continue; | |
3677 | if (!check_constant_initializer (c->expr, &cm->ts, | |
3678 | cm->attr.dimension, | |
3679 | cm->attr.pointer)) | |
3680 | return false; | |
3681 | } | |
3682 | return true; | |
3683 | default: | |
3684 | return expr->expr_type == EXPR_CONSTANT; | |
3685 | } | |
3686 | } | |
3687 | ||
3688 | /* Emit debug info for parameters and unreferenced variables with | |
3689 | initializers. */ | |
3690 | ||
3691 | static void | |
3692 | gfc_emit_parameter_debug_info (gfc_symbol *sym) | |
3693 | { | |
3694 | tree decl; | |
3695 | ||
3696 | if (sym->attr.flavor != FL_PARAMETER | |
3697 | && (sym->attr.flavor != FL_VARIABLE || sym->attr.referenced)) | |
3698 | return; | |
3699 | ||
3700 | if (sym->backend_decl != NULL | |
3701 | || sym->value == NULL | |
3702 | || sym->attr.use_assoc | |
3703 | || sym->attr.dummy | |
3704 | || sym->attr.result | |
3705 | || sym->attr.function | |
3706 | || sym->attr.intrinsic | |
3707 | || sym->attr.pointer | |
3708 | || sym->attr.allocatable | |
3709 | || sym->attr.cray_pointee | |
3710 | || sym->attr.threadprivate | |
3711 | || sym->attr.is_bind_c | |
3712 | || sym->attr.subref_array_pointer | |
3713 | || sym->attr.assign) | |
3714 | return; | |
3715 | ||
3716 | if (sym->ts.type == BT_CHARACTER) | |
3717 | { | |
bc21d315 JW |
3718 | gfc_conv_const_charlen (sym->ts.u.cl); |
3719 | if (sym->ts.u.cl->backend_decl == NULL | |
3720 | || TREE_CODE (sym->ts.u.cl->backend_decl) != INTEGER_CST) | |
bd11e37d JJ |
3721 | return; |
3722 | } | |
bc21d315 | 3723 | else if (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
bd11e37d JJ |
3724 | return; |
3725 | ||
3726 | if (sym->as) | |
3727 | { | |
3728 | int n; | |
3729 | ||
3730 | if (sym->as->type != AS_EXPLICIT) | |
3731 | return; | |
3732 | for (n = 0; n < sym->as->rank; n++) | |
3733 | if (sym->as->lower[n]->expr_type != EXPR_CONSTANT | |
3734 | || sym->as->upper[n] == NULL | |
3735 | || sym->as->upper[n]->expr_type != EXPR_CONSTANT) | |
3736 | return; | |
3737 | } | |
3738 | ||
3739 | if (!check_constant_initializer (sym->value, &sym->ts, | |
3740 | sym->attr.dimension, false)) | |
3741 | return; | |
3742 | ||
3743 | /* Create the decl for the variable or constant. */ | |
c2255bc4 AH |
3744 | decl = build_decl (input_location, |
3745 | sym->attr.flavor == FL_PARAMETER ? CONST_DECL : VAR_DECL, | |
bd11e37d JJ |
3746 | gfc_sym_identifier (sym), gfc_sym_type (sym)); |
3747 | if (sym->attr.flavor == FL_PARAMETER) | |
3748 | TREE_READONLY (decl) = 1; | |
3749 | gfc_set_decl_location (decl, &sym->declared_at); | |
3750 | if (sym->attr.dimension) | |
3751 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
3752 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
3753 | TREE_STATIC (decl) = 1; | |
3754 | TREE_USED (decl) = 1; | |
3755 | if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
3756 | TREE_PUBLIC (decl) = 1; | |
3757 | DECL_INITIAL (decl) | |
3758 | = gfc_conv_initializer (sym->value, &sym->ts, TREE_TYPE (decl), | |
3759 | sym->attr.dimension, 0); | |
3760 | debug_hooks->global_decl (decl); | |
3761 | } | |
3762 | ||
9268ba9a JJ |
3763 | /* Generate all the required code for module variables. */ |
3764 | ||
3765 | void | |
3766 | gfc_generate_module_vars (gfc_namespace * ns) | |
3767 | { | |
3768 | module_namespace = ns; | |
3769 | cur_module = gfc_find_module (ns->proc_name->name); | |
3770 | ||
3771 | /* Check if the frontend left the namespace in a reasonable state. */ | |
3772 | gcc_assert (ns->proc_name && !ns->proc_name->tlink); | |
3773 | ||
3774 | /* Generate COMMON blocks. */ | |
3775 | gfc_trans_common (ns); | |
3776 | ||
3777 | /* Create decls for all the module variables. */ | |
3778 | gfc_traverse_ns (ns, gfc_create_module_variable); | |
3779 | ||
3780 | cur_module = NULL; | |
3781 | ||
3782 | gfc_trans_use_stmts (ns); | |
bd11e37d | 3783 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
9268ba9a JJ |
3784 | } |
3785 | ||
3786 | ||
6de9cd9a DN |
3787 | static void |
3788 | gfc_generate_contained_functions (gfc_namespace * parent) | |
3789 | { | |
3790 | gfc_namespace *ns; | |
3791 | ||
3792 | /* We create all the prototypes before generating any code. */ | |
3793 | for (ns = parent->contained; ns; ns = ns->sibling) | |
3794 | { | |
3795 | /* Skip namespaces from used modules. */ | |
3796 | if (ns->parent != parent) | |
3797 | continue; | |
3798 | ||
3d79abbd | 3799 | gfc_create_function_decl (ns); |
6de9cd9a DN |
3800 | } |
3801 | ||
3802 | for (ns = parent->contained; ns; ns = ns->sibling) | |
3803 | { | |
3804 | /* Skip namespaces from used modules. */ | |
3805 | if (ns->parent != parent) | |
3806 | continue; | |
3807 | ||
3808 | gfc_generate_function_code (ns); | |
3809 | } | |
3810 | } | |
3811 | ||
3812 | ||
3e978d30 PT |
3813 | /* Drill down through expressions for the array specification bounds and |
3814 | character length calling generate_local_decl for all those variables | |
3815 | that have not already been declared. */ | |
3816 | ||
3817 | static void | |
3818 | generate_local_decl (gfc_symbol *); | |
3819 | ||
908a2235 | 3820 | /* Traverse expr, marking all EXPR_VARIABLE symbols referenced. */ |
3e978d30 | 3821 | |
908a2235 PT |
3822 | static bool |
3823 | expr_decls (gfc_expr *e, gfc_symbol *sym, | |
3824 | int *f ATTRIBUTE_UNUSED) | |
3825 | { | |
3826 | if (e->expr_type != EXPR_VARIABLE | |
3827 | || sym == e->symtree->n.sym | |
3e978d30 PT |
3828 | || e->symtree->n.sym->mark |
3829 | || e->symtree->n.sym->ns != sym->ns) | |
908a2235 | 3830 | return false; |
3e978d30 | 3831 | |
908a2235 PT |
3832 | generate_local_decl (e->symtree->n.sym); |
3833 | return false; | |
3834 | } | |
3e978d30 | 3835 | |
908a2235 PT |
3836 | static void |
3837 | generate_expr_decls (gfc_symbol *sym, gfc_expr *e) | |
3838 | { | |
3839 | gfc_traverse_expr (e, sym, expr_decls, 0); | |
3e978d30 PT |
3840 | } |
3841 | ||
3842 | ||
66e4ab31 | 3843 | /* Check for dependencies in the character length and array spec. */ |
3e978d30 PT |
3844 | |
3845 | static void | |
3846 | generate_dependency_declarations (gfc_symbol *sym) | |
3847 | { | |
3848 | int i; | |
3849 | ||
3850 | if (sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
3851 | && sym->ts.u.cl |
3852 | && sym->ts.u.cl->length | |
3853 | && sym->ts.u.cl->length->expr_type != EXPR_CONSTANT) | |
3854 | generate_expr_decls (sym, sym->ts.u.cl->length); | |
3e978d30 PT |
3855 | |
3856 | if (sym->as && sym->as->rank) | |
3857 | { | |
3858 | for (i = 0; i < sym->as->rank; i++) | |
3859 | { | |
3860 | generate_expr_decls (sym, sym->as->lower[i]); | |
3861 | generate_expr_decls (sym, sym->as->upper[i]); | |
3862 | } | |
3863 | } | |
3864 | } | |
3865 | ||
3866 | ||
6de9cd9a DN |
3867 | /* Generate decls for all local variables. We do this to ensure correct |
3868 | handling of expressions which only appear in the specification of | |
3869 | other functions. */ | |
3870 | ||
3871 | static void | |
3872 | generate_local_decl (gfc_symbol * sym) | |
3873 | { | |
3874 | if (sym->attr.flavor == FL_VARIABLE) | |
3875 | { | |
3e978d30 | 3876 | if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master) |
2c69d527 | 3877 | generate_dependency_declarations (sym); |
3e978d30 | 3878 | |
6de9cd9a | 3879 | if (sym->attr.referenced) |
2c69d527 | 3880 | gfc_get_symbol_decl (sym); |
4ed44ccc DF |
3881 | |
3882 | /* Warnings for unused dummy arguments. */ | |
3883 | else if (sym->attr.dummy) | |
ad6d42e1 | 3884 | { |
4ed44ccc DF |
3885 | /* INTENT(out) dummy arguments are likely meant to be set. */ |
3886 | if (gfc_option.warn_unused_dummy_argument | |
3887 | && sym->attr.intent == INTENT_OUT) | |
3888 | { | |
3889 | if (sym->ts.type != BT_DERIVED) | |
3890 | gfc_warning ("Dummy argument '%s' at %L was declared " | |
3891 | "INTENT(OUT) but was not set", sym->name, | |
3892 | &sym->declared_at); | |
3893 | else if (!gfc_has_default_initializer (sym->ts.u.derived)) | |
3894 | gfc_warning ("Derived-type dummy argument '%s' at %L was " | |
3895 | "declared INTENT(OUT) but was not set and " | |
3896 | "does not have a default initializer", | |
3897 | sym->name, &sym->declared_at); | |
3898 | } | |
3899 | else if (gfc_option.warn_unused_dummy_argument) | |
3900 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, | |
3901 | &sym->declared_at); | |
ad6d42e1 | 3902 | } |
4ed44ccc | 3903 | |
f8d0aee5 | 3904 | /* Warn for unused variables, but not if they're inside a common |
19e4c59d | 3905 | block or are use-associated. */ |
ce738b86 | 3906 | else if (warn_unused_variable |
766d0c8c | 3907 | && !(sym->attr.in_common || sym->attr.use_assoc || sym->mark)) |
d92693b4 | 3908 | gfc_warning ("Unused variable '%s' declared at %L", sym->name, |
80f2bb6e | 3909 | &sym->declared_at); |
2c69d527 | 3910 | |
417ab240 JJ |
3911 | /* For variable length CHARACTER parameters, the PARM_DECL already |
3912 | references the length variable, so force gfc_get_symbol_decl | |
3913 | even when not referenced. If optimize > 0, it will be optimized | |
3914 | away anyway. But do this only after emitting -Wunused-parameter | |
3915 | warning if requested. */ | |
2c69d527 PT |
3916 | if (sym->attr.dummy && !sym->attr.referenced |
3917 | && sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
3918 | && sym->ts.u.cl->backend_decl != NULL |
3919 | && TREE_CODE (sym->ts.u.cl->backend_decl) == VAR_DECL) | |
417ab240 JJ |
3920 | { |
3921 | sym->attr.referenced = 1; | |
3922 | gfc_get_symbol_decl (sym); | |
3923 | } | |
534fd534 | 3924 | |
5af2eace PT |
3925 | /* INTENT(out) dummy arguments and result variables with allocatable |
3926 | components are reset by default and need to be set referenced to | |
3927 | generate the code for nullification and automatic lengths. */ | |
3928 | if (!sym->attr.referenced | |
2c69d527 | 3929 | && sym->ts.type == BT_DERIVED |
bc21d315 | 3930 | && sym->ts.u.derived->attr.alloc_comp |
758e12af | 3931 | && !sym->attr.pointer |
5af2eace PT |
3932 | && ((sym->attr.dummy && sym->attr.intent == INTENT_OUT) |
3933 | || | |
3934 | (sym->attr.result && sym != sym->result))) | |
2c69d527 PT |
3935 | { |
3936 | sym->attr.referenced = 1; | |
3937 | gfc_get_symbol_decl (sym); | |
3938 | } | |
3939 | ||
06c7153f TB |
3940 | /* Check for dependencies in the array specification and string |
3941 | length, adding the necessary declarations to the function. We | |
3942 | mark the symbol now, as well as in traverse_ns, to prevent | |
3943 | getting stuck in a circular dependency. */ | |
3944 | sym->mark = 1; | |
3945 | ||
534fd534 DF |
3946 | /* We do not want the middle-end to warn about unused parameters |
3947 | as this was already done above. */ | |
3948 | if (sym->attr.dummy && sym->backend_decl != NULL_TREE) | |
3949 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
6de9cd9a | 3950 | } |
33c0c5e9 DF |
3951 | else if (sym->attr.flavor == FL_PARAMETER) |
3952 | { | |
d92693b4 | 3953 | if (warn_unused_parameter |
33c0c5e9 DF |
3954 | && !sym->attr.referenced |
3955 | && !sym->attr.use_assoc) | |
d92693b4 | 3956 | gfc_warning ("Unused parameter '%s' declared at %L", sym->name, |
33c0c5e9 DF |
3957 | &sym->declared_at); |
3958 | } | |
766d0c8c DF |
3959 | else if (sym->attr.flavor == FL_PROCEDURE) |
3960 | { | |
3961 | /* TODO: move to the appropriate place in resolve.c. */ | |
3962 | if (warn_return_type | |
3963 | && sym->attr.function | |
3964 | && sym->result | |
3965 | && sym != sym->result | |
3966 | && !sym->result->attr.referenced | |
3967 | && !sym->attr.use_assoc | |
3968 | && sym->attr.if_source != IFSRC_IFBODY) | |
3969 | { | |
3970 | gfc_warning ("Return value '%s' of function '%s' declared at " | |
3971 | "%L not set", sym->result->name, sym->name, | |
3972 | &sym->result->declared_at); | |
3973 | ||
3974 | /* Prevents "Unused variable" warning for RESULT variables. */ | |
06c7153f | 3975 | sym->result->mark = 1; |
766d0c8c DF |
3976 | } |
3977 | } | |
a8b3b0b6 | 3978 | |
8b16d231 CR |
3979 | if (sym->attr.dummy == 1) |
3980 | { | |
3981 | /* Modify the tree type for scalar character dummy arguments of bind(c) | |
3982 | procedures if they are passed by value. The tree type for them will | |
3983 | be promoted to INTEGER_TYPE for the middle end, which appears to be | |
3984 | what C would do with characters passed by-value. The value attribute | |
3985 | implies the dummy is a scalar. */ | |
3986 | if (sym->attr.value == 1 && sym->backend_decl != NULL | |
3987 | && sym->ts.type == BT_CHARACTER && sym->ts.is_c_interop | |
3988 | && sym->ns->proc_name != NULL && sym->ns->proc_name->attr.is_bind_c) | |
e032c2a1 | 3989 | gfc_conv_scalar_char_value (sym, NULL, NULL); |
8b16d231 CR |
3990 | } |
3991 | ||
a8b3b0b6 CR |
3992 | /* Make sure we convert the types of the derived types from iso_c_binding |
3993 | into (void *). */ | |
3994 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
3995 | && sym->ts.type == BT_DERIVED) | |
3996 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
6de9cd9a DN |
3997 | } |
3998 | ||
3999 | static void | |
4000 | generate_local_vars (gfc_namespace * ns) | |
4001 | { | |
4002 | gfc_traverse_ns (ns, generate_local_decl); | |
4003 | } | |
4004 | ||
4005 | ||
3d79abbd PB |
4006 | /* Generate a switch statement to jump to the correct entry point. Also |
4007 | creates the label decls for the entry points. */ | |
6de9cd9a | 4008 | |
3d79abbd PB |
4009 | static tree |
4010 | gfc_trans_entry_master_switch (gfc_entry_list * el) | |
6de9cd9a | 4011 | { |
3d79abbd PB |
4012 | stmtblock_t block; |
4013 | tree label; | |
4014 | tree tmp; | |
4015 | tree val; | |
6de9cd9a | 4016 | |
3d79abbd PB |
4017 | gfc_init_block (&block); |
4018 | for (; el; el = el->next) | |
4019 | { | |
4020 | /* Add the case label. */ | |
c006df4e | 4021 | label = gfc_build_label_decl (NULL_TREE); |
7d60be94 | 4022 | val = build_int_cst (gfc_array_index_type, el->id); |
923ab88c | 4023 | tmp = build3_v (CASE_LABEL_EXPR, val, NULL_TREE, label); |
3d79abbd | 4024 | gfc_add_expr_to_block (&block, tmp); |
7389bce6 | 4025 | |
3d79abbd PB |
4026 | /* And jump to the actual entry point. */ |
4027 | label = gfc_build_label_decl (NULL_TREE); | |
3d79abbd PB |
4028 | tmp = build1_v (GOTO_EXPR, label); |
4029 | gfc_add_expr_to_block (&block, tmp); | |
4030 | ||
4031 | /* Save the label decl. */ | |
4032 | el->label = label; | |
4033 | } | |
4034 | tmp = gfc_finish_block (&block); | |
4035 | /* The first argument selects the entry point. */ | |
4036 | val = DECL_ARGUMENTS (current_function_decl); | |
923ab88c | 4037 | tmp = build3_v (SWITCH_EXPR, val, tmp, NULL_TREE); |
3d79abbd | 4038 | return tmp; |
6de9cd9a DN |
4039 | } |
4040 | ||
44de5aeb | 4041 | |
cadb8f42 DK |
4042 | /* Add code to string lengths of actual arguments passed to a function against |
4043 | the expected lengths of the dummy arguments. */ | |
4044 | ||
4045 | static void | |
4046 | add_argument_checking (stmtblock_t *block, gfc_symbol *sym) | |
4047 | { | |
4048 | gfc_formal_arglist *formal; | |
4049 | ||
4050 | for (formal = sym->formal; formal; formal = formal->next) | |
4051 | if (formal->sym && formal->sym->ts.type == BT_CHARACTER) | |
4052 | { | |
4053 | enum tree_code comparison; | |
4054 | tree cond; | |
4055 | tree argname; | |
4056 | gfc_symbol *fsym; | |
4057 | gfc_charlen *cl; | |
4058 | const char *message; | |
4059 | ||
4060 | fsym = formal->sym; | |
bc21d315 | 4061 | cl = fsym->ts.u.cl; |
cadb8f42 DK |
4062 | |
4063 | gcc_assert (cl); | |
4064 | gcc_assert (cl->passed_length != NULL_TREE); | |
4065 | gcc_assert (cl->backend_decl != NULL_TREE); | |
4066 | ||
4067 | /* For POINTER, ALLOCATABLE and assumed-shape dummy arguments, the | |
4068 | string lengths must match exactly. Otherwise, it is only required | |
cb7a8961 TB |
4069 | that the actual string length is *at least* the expected one. |
4070 | Sequence association allows for a mismatch of the string length | |
4071 | if the actual argument is (part of) an array, but only if the | |
4072 | dummy argument is an array. (See "Sequence association" in | |
4073 | Section 12.4.1.4 for F95 and 12.4.1.5 for F2003.) */ | |
cadb8f42 DK |
4074 | if (fsym->attr.pointer || fsym->attr.allocatable |
4075 | || (fsym->as && fsym->as->type == AS_ASSUMED_SHAPE)) | |
4076 | { | |
4077 | comparison = NE_EXPR; | |
4078 | message = _("Actual string length does not match the declared one" | |
4079 | " for dummy argument '%s' (%ld/%ld)"); | |
4080 | } | |
cb7a8961 TB |
4081 | else if (fsym->as && fsym->as->rank != 0) |
4082 | continue; | |
cadb8f42 DK |
4083 | else |
4084 | { | |
4085 | comparison = LT_EXPR; | |
4086 | message = _("Actual string length is shorter than the declared one" | |
4087 | " for dummy argument '%s' (%ld/%ld)"); | |
4088 | } | |
4089 | ||
4090 | /* Build the condition. For optional arguments, an actual length | |
4091 | of 0 is also acceptable if the associated string is NULL, which | |
4092 | means the argument was not passed. */ | |
4093 | cond = fold_build2 (comparison, boolean_type_node, | |
4094 | cl->passed_length, cl->backend_decl); | |
4095 | if (fsym->attr.optional) | |
4096 | { | |
4097 | tree not_absent; | |
4098 | tree not_0length; | |
4099 | tree absent_failed; | |
4100 | ||
4101 | not_0length = fold_build2 (NE_EXPR, boolean_type_node, | |
4102 | cl->passed_length, | |
4103 | fold_convert (gfc_charlen_type_node, | |
4104 | integer_zero_node)); | |
702a738b PT |
4105 | /* The symbol needs to be referenced for gfc_get_symbol_decl. */ |
4106 | fsym->attr.referenced = 1; | |
4107 | not_absent = gfc_conv_expr_present (fsym); | |
cadb8f42 DK |
4108 | |
4109 | absent_failed = fold_build2 (TRUTH_OR_EXPR, boolean_type_node, | |
4110 | not_0length, not_absent); | |
4111 | ||
4112 | cond = fold_build2 (TRUTH_AND_EXPR, boolean_type_node, | |
4113 | cond, absent_failed); | |
4114 | } | |
4115 | ||
4116 | /* Build the runtime check. */ | |
4117 | argname = gfc_build_cstring_const (fsym->name); | |
4118 | argname = gfc_build_addr_expr (pchar_type_node, argname); | |
4119 | gfc_trans_runtime_check (true, false, cond, block, &fsym->declared_at, | |
4120 | message, argname, | |
4121 | fold_convert (long_integer_type_node, | |
4122 | cl->passed_length), | |
4123 | fold_convert (long_integer_type_node, | |
4124 | cl->backend_decl)); | |
4125 | } | |
4126 | } | |
4127 | ||
4128 | ||
092231a8 TB |
4129 | static void |
4130 | create_main_function (tree fndecl) | |
4131 | { | |
86c3c481 | 4132 | tree old_context; |
092231a8 TB |
4133 | tree ftn_main; |
4134 | tree tmp, decl, result_decl, argc, argv, typelist, arglist; | |
4135 | stmtblock_t body; | |
4136 | ||
86c3c481 TB |
4137 | old_context = current_function_decl; |
4138 | ||
4139 | if (old_context) | |
4140 | { | |
4141 | push_function_context (); | |
4142 | saved_parent_function_decls = saved_function_decls; | |
4143 | saved_function_decls = NULL_TREE; | |
4144 | } | |
4145 | ||
092231a8 TB |
4146 | /* main() function must be declared with global scope. */ |
4147 | gcc_assert (current_function_decl == NULL_TREE); | |
4148 | ||
4149 | /* Declare the function. */ | |
4150 | tmp = build_function_type_list (integer_type_node, integer_type_node, | |
4151 | build_pointer_type (pchar_type_node), | |
4152 | NULL_TREE); | |
a7ad6c2d | 4153 | main_identifier_node = get_identifier ("main"); |
c2255bc4 AH |
4154 | ftn_main = build_decl (input_location, FUNCTION_DECL, |
4155 | main_identifier_node, tmp); | |
092231a8 TB |
4156 | DECL_EXTERNAL (ftn_main) = 0; |
4157 | TREE_PUBLIC (ftn_main) = 1; | |
4158 | TREE_STATIC (ftn_main) = 1; | |
4159 | DECL_ATTRIBUTES (ftn_main) | |
4160 | = tree_cons (get_identifier("externally_visible"), NULL_TREE, NULL_TREE); | |
4161 | ||
4162 | /* Setup the result declaration (for "return 0"). */ | |
c2255bc4 AH |
4163 | result_decl = build_decl (input_location, |
4164 | RESULT_DECL, NULL_TREE, integer_type_node); | |
092231a8 TB |
4165 | DECL_ARTIFICIAL (result_decl) = 1; |
4166 | DECL_IGNORED_P (result_decl) = 1; | |
4167 | DECL_CONTEXT (result_decl) = ftn_main; | |
4168 | DECL_RESULT (ftn_main) = result_decl; | |
4169 | ||
4170 | pushdecl (ftn_main); | |
4171 | ||
4172 | /* Get the arguments. */ | |
4173 | ||
4174 | arglist = NULL_TREE; | |
4175 | typelist = TYPE_ARG_TYPES (TREE_TYPE (ftn_main)); | |
4176 | ||
4177 | tmp = TREE_VALUE (typelist); | |
c2255bc4 | 4178 | argc = build_decl (input_location, PARM_DECL, get_identifier ("argc"), tmp); |
092231a8 TB |
4179 | DECL_CONTEXT (argc) = ftn_main; |
4180 | DECL_ARG_TYPE (argc) = TREE_VALUE (typelist); | |
4181 | TREE_READONLY (argc) = 1; | |
4182 | gfc_finish_decl (argc); | |
4183 | arglist = chainon (arglist, argc); | |
4184 | ||
4185 | typelist = TREE_CHAIN (typelist); | |
4186 | tmp = TREE_VALUE (typelist); | |
c2255bc4 | 4187 | argv = build_decl (input_location, PARM_DECL, get_identifier ("argv"), tmp); |
092231a8 TB |
4188 | DECL_CONTEXT (argv) = ftn_main; |
4189 | DECL_ARG_TYPE (argv) = TREE_VALUE (typelist); | |
4190 | TREE_READONLY (argv) = 1; | |
4191 | DECL_BY_REFERENCE (argv) = 1; | |
4192 | gfc_finish_decl (argv); | |
4193 | arglist = chainon (arglist, argv); | |
4194 | ||
4195 | DECL_ARGUMENTS (ftn_main) = arglist; | |
4196 | current_function_decl = ftn_main; | |
4197 | announce_function (ftn_main); | |
4198 | ||
4199 | rest_of_decl_compilation (ftn_main, 1, 0); | |
4200 | make_decl_rtl (ftn_main); | |
4201 | init_function_start (ftn_main); | |
4202 | pushlevel (0); | |
4203 | ||
4204 | gfc_init_block (&body); | |
4205 | ||
4206 | /* Call some libgfortran initialization routines, call then MAIN__(). */ | |
4207 | ||
4208 | /* Call _gfortran_set_args (argc, argv). */ | |
86c3c481 TB |
4209 | TREE_USED (argc) = 1; |
4210 | TREE_USED (argv) = 1; | |
db3927fb AH |
4211 | tmp = build_call_expr_loc (input_location, |
4212 | gfor_fndecl_set_args, 2, argc, argv); | |
092231a8 TB |
4213 | gfc_add_expr_to_block (&body, tmp); |
4214 | ||
4215 | /* Add a call to set_options to set up the runtime library Fortran | |
4216 | language standard parameters. */ | |
4217 | { | |
4218 | tree array_type, array, var; | |
8748ad99 | 4219 | VEC(constructor_elt,gc) *v = NULL; |
092231a8 TB |
4220 | |
4221 | /* Passing a new option to the library requires four modifications: | |
4222 | + add it to the tree_cons list below | |
4223 | + change the array size in the call to build_array_type | |
4224 | + change the first argument to the library call | |
4225 | gfor_fndecl_set_options | |
4226 | + modify the library (runtime/compile_options.c)! */ | |
4227 | ||
8748ad99 NF |
4228 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
4229 | build_int_cst (integer_type_node, | |
4230 | gfc_option.warn_std)); | |
4231 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4232 | build_int_cst (integer_type_node, | |
4233 | gfc_option.allow_std)); | |
4234 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4235 | build_int_cst (integer_type_node, pedantic)); | |
4236 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4237 | build_int_cst (integer_type_node, | |
4238 | gfc_option.flag_dump_core)); | |
4239 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4240 | build_int_cst (integer_type_node, | |
4241 | gfc_option.flag_backtrace)); | |
4242 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4243 | build_int_cst (integer_type_node, | |
4244 | gfc_option.flag_sign_zero)); | |
4245 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4246 | build_int_cst (integer_type_node, | |
4247 | (gfc_option.rtcheck | |
4248 | & GFC_RTCHECK_BOUNDS))); | |
4249 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4250 | build_int_cst (integer_type_node, | |
4251 | gfc_option.flag_range_check)); | |
092231a8 TB |
4252 | |
4253 | array_type = build_array_type (integer_type_node, | |
4254 | build_index_type (build_int_cst (NULL_TREE, 7))); | |
8748ad99 | 4255 | array = build_constructor (array_type, v); |
092231a8 TB |
4256 | TREE_CONSTANT (array) = 1; |
4257 | TREE_STATIC (array) = 1; | |
4258 | ||
4259 | /* Create a static variable to hold the jump table. */ | |
4260 | var = gfc_create_var (array_type, "options"); | |
4261 | TREE_CONSTANT (var) = 1; | |
4262 | TREE_STATIC (var) = 1; | |
4263 | TREE_READONLY (var) = 1; | |
4264 | DECL_INITIAL (var) = array; | |
4265 | var = gfc_build_addr_expr (build_pointer_type (integer_type_node), var); | |
4266 | ||
db3927fb AH |
4267 | tmp = build_call_expr_loc (input_location, |
4268 | gfor_fndecl_set_options, 2, | |
092231a8 TB |
4269 | build_int_cst (integer_type_node, 8), var); |
4270 | gfc_add_expr_to_block (&body, tmp); | |
4271 | } | |
4272 | ||
4273 | /* If -ffpe-trap option was provided, add a call to set_fpe so that | |
4274 | the library will raise a FPE when needed. */ | |
4275 | if (gfc_option.fpe != 0) | |
4276 | { | |
db3927fb AH |
4277 | tmp = build_call_expr_loc (input_location, |
4278 | gfor_fndecl_set_fpe, 1, | |
092231a8 TB |
4279 | build_int_cst (integer_type_node, |
4280 | gfc_option.fpe)); | |
4281 | gfc_add_expr_to_block (&body, tmp); | |
4282 | } | |
4283 | ||
4284 | /* If this is the main program and an -fconvert option was provided, | |
4285 | add a call to set_convert. */ | |
4286 | ||
4287 | if (gfc_option.convert != GFC_CONVERT_NATIVE) | |
4288 | { | |
db3927fb AH |
4289 | tmp = build_call_expr_loc (input_location, |
4290 | gfor_fndecl_set_convert, 1, | |
092231a8 TB |
4291 | build_int_cst (integer_type_node, |
4292 | gfc_option.convert)); | |
4293 | gfc_add_expr_to_block (&body, tmp); | |
4294 | } | |
4295 | ||
4296 | /* If this is the main program and an -frecord-marker option was provided, | |
4297 | add a call to set_record_marker. */ | |
4298 | ||
4299 | if (gfc_option.record_marker != 0) | |
4300 | { | |
db3927fb AH |
4301 | tmp = build_call_expr_loc (input_location, |
4302 | gfor_fndecl_set_record_marker, 1, | |
092231a8 TB |
4303 | build_int_cst (integer_type_node, |
4304 | gfc_option.record_marker)); | |
4305 | gfc_add_expr_to_block (&body, tmp); | |
4306 | } | |
4307 | ||
4308 | if (gfc_option.max_subrecord_length != 0) | |
4309 | { | |
db3927fb AH |
4310 | tmp = build_call_expr_loc (input_location, |
4311 | gfor_fndecl_set_max_subrecord_length, 1, | |
092231a8 TB |
4312 | build_int_cst (integer_type_node, |
4313 | gfc_option.max_subrecord_length)); | |
4314 | gfc_add_expr_to_block (&body, tmp); | |
4315 | } | |
4316 | ||
4317 | /* Call MAIN__(). */ | |
db3927fb AH |
4318 | tmp = build_call_expr_loc (input_location, |
4319 | fndecl, 0); | |
092231a8 TB |
4320 | gfc_add_expr_to_block (&body, tmp); |
4321 | ||
86c3c481 TB |
4322 | /* Mark MAIN__ as used. */ |
4323 | TREE_USED (fndecl) = 1; | |
4324 | ||
092231a8 TB |
4325 | /* "return 0". */ |
4326 | tmp = fold_build2 (MODIFY_EXPR, integer_type_node, DECL_RESULT (ftn_main), | |
4327 | build_int_cst (integer_type_node, 0)); | |
4328 | tmp = build1_v (RETURN_EXPR, tmp); | |
4329 | gfc_add_expr_to_block (&body, tmp); | |
4330 | ||
4331 | ||
4332 | DECL_SAVED_TREE (ftn_main) = gfc_finish_block (&body); | |
4333 | decl = getdecls (); | |
4334 | ||
4335 | /* Finish off this function and send it for code generation. */ | |
4336 | poplevel (1, 0, 1); | |
4337 | BLOCK_SUPERCONTEXT (DECL_INITIAL (ftn_main)) = ftn_main; | |
4338 | ||
4339 | DECL_SAVED_TREE (ftn_main) | |
4340 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (ftn_main), | |
4341 | DECL_INITIAL (ftn_main)); | |
4342 | ||
4343 | /* Output the GENERIC tree. */ | |
4344 | dump_function (TDI_original, ftn_main); | |
4345 | ||
9618fb3c | 4346 | cgraph_finalize_function (ftn_main, true); |
86c3c481 TB |
4347 | |
4348 | if (old_context) | |
4349 | { | |
4350 | pop_function_context (); | |
4351 | saved_function_decls = saved_parent_function_decls; | |
4352 | } | |
4353 | current_function_decl = old_context; | |
092231a8 TB |
4354 | } |
4355 | ||
4356 | ||
6de9cd9a DN |
4357 | /* Generate code for a function. */ |
4358 | ||
4359 | void | |
4360 | gfc_generate_function_code (gfc_namespace * ns) | |
4361 | { | |
4362 | tree fndecl; | |
4363 | tree old_context; | |
4364 | tree decl; | |
4365 | tree tmp; | |
5046aff5 | 4366 | tree tmp2; |
6de9cd9a DN |
4367 | stmtblock_t block; |
4368 | stmtblock_t body; | |
4369 | tree result; | |
702a738b | 4370 | tree recurcheckvar = NULL_TREE; |
6de9cd9a | 4371 | gfc_symbol *sym; |
5046aff5 | 4372 | int rank; |
cf7d2eb0 | 4373 | bool is_recursive; |
6de9cd9a DN |
4374 | |
4375 | sym = ns->proc_name; | |
3d79abbd | 4376 | |
6de9cd9a | 4377 | /* Check that the frontend isn't still using this. */ |
6e45f57b | 4378 | gcc_assert (sym->tlink == NULL); |
6de9cd9a DN |
4379 | sym->tlink = sym; |
4380 | ||
4381 | /* Create the declaration for functions with global scope. */ | |
4382 | if (!sym->backend_decl) | |
3d79abbd | 4383 | gfc_create_function_decl (ns); |
6de9cd9a DN |
4384 | |
4385 | fndecl = sym->backend_decl; | |
4386 | old_context = current_function_decl; | |
4387 | ||
4388 | if (old_context) | |
4389 | { | |
4390 | push_function_context (); | |
4391 | saved_parent_function_decls = saved_function_decls; | |
4392 | saved_function_decls = NULL_TREE; | |
4393 | } | |
4394 | ||
3d79abbd | 4395 | trans_function_start (sym); |
6de9cd9a | 4396 | |
c7c79a09 | 4397 | gfc_init_block (&block); |
6de9cd9a | 4398 | |
d198b59a JJ |
4399 | if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER) |
4400 | { | |
4401 | /* Copy length backend_decls to all entry point result | |
4402 | symbols. */ | |
4403 | gfc_entry_list *el; | |
4404 | tree backend_decl; | |
4405 | ||
bc21d315 JW |
4406 | gfc_conv_const_charlen (ns->proc_name->ts.u.cl); |
4407 | backend_decl = ns->proc_name->result->ts.u.cl->backend_decl; | |
d198b59a | 4408 | for (el = ns->entries; el; el = el->next) |
bc21d315 | 4409 | el->sym->result->ts.u.cl->backend_decl = backend_decl; |
d198b59a JJ |
4410 | } |
4411 | ||
6de9cd9a DN |
4412 | /* Translate COMMON blocks. */ |
4413 | gfc_trans_common (ns); | |
4414 | ||
5f20c93a PT |
4415 | /* Null the parent fake result declaration if this namespace is |
4416 | a module function or an external procedures. */ | |
4417 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
4418 | || ns->parent == NULL) | |
4419 | parent_fake_result_decl = NULL_TREE; | |
4420 | ||
30aabb86 PT |
4421 | gfc_generate_contained_functions (ns); |
4422 | ||
77f2a970 JJ |
4423 | nonlocal_dummy_decls = NULL; |
4424 | nonlocal_dummy_decl_pset = NULL; | |
4425 | ||
6de9cd9a | 4426 | generate_local_vars (ns); |
7389bce6 | 4427 | |
5f20c93a PT |
4428 | /* Keep the parent fake result declaration in module functions |
4429 | or external procedures. */ | |
4430 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
4431 | || ns->parent == NULL) | |
4432 | current_fake_result_decl = parent_fake_result_decl; | |
4433 | else | |
4434 | current_fake_result_decl = NULL_TREE; | |
4435 | ||
6de9cd9a DN |
4436 | current_function_return_label = NULL; |
4437 | ||
4438 | /* Now generate the code for the body of this function. */ | |
4439 | gfc_init_block (&body); | |
4440 | ||
cf7d2eb0 TB |
4441 | is_recursive = sym->attr.recursive |
4442 | || (sym->attr.entry_master | |
4443 | && sym->ns->entries->sym->attr.recursive); | |
702a738b PT |
4444 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) |
4445 | && !is_recursive | |
4446 | && !gfc_option.flag_recursive) | |
43998ed9 TB |
4447 | { |
4448 | char * msg; | |
4449 | ||
4450 | asprintf (&msg, "Recursive call to nonrecursive procedure '%s'", | |
4451 | sym->name); | |
4452 | recurcheckvar = gfc_create_var (boolean_type_node, "is_recursive"); | |
4453 | TREE_STATIC (recurcheckvar) = 1; | |
4454 | DECL_INITIAL (recurcheckvar) = boolean_false_node; | |
4455 | gfc_add_expr_to_block (&block, recurcheckvar); | |
4456 | gfc_trans_runtime_check (true, false, recurcheckvar, &block, | |
4457 | &sym->declared_at, msg); | |
4458 | gfc_add_modify (&block, recurcheckvar, boolean_true_node); | |
4459 | gfc_free (msg); | |
4460 | } | |
4461 | ||
6de9cd9a | 4462 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node |
702a738b | 4463 | && sym->attr.subroutine) |
6de9cd9a DN |
4464 | { |
4465 | tree alternate_return; | |
5f20c93a | 4466 | alternate_return = gfc_get_fake_result_decl (sym, 0); |
726a989a | 4467 | gfc_add_modify (&body, alternate_return, integer_zero_node); |
6de9cd9a DN |
4468 | } |
4469 | ||
3d79abbd PB |
4470 | if (ns->entries) |
4471 | { | |
4472 | /* Jump to the correct entry point. */ | |
4473 | tmp = gfc_trans_entry_master_switch (ns->entries); | |
4474 | gfc_add_expr_to_block (&body, tmp); | |
4475 | } | |
4476 | ||
cadb8f42 DK |
4477 | /* If bounds-checking is enabled, generate code to check passed in actual |
4478 | arguments against the expected dummy argument attributes (e.g. string | |
4479 | lengths). */ | |
975d3303 | 4480 | if ((gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) && !sym->attr.is_bind_c) |
cadb8f42 DK |
4481 | add_argument_checking (&body, sym); |
4482 | ||
6de9cd9a DN |
4483 | tmp = gfc_trans_code (ns->code); |
4484 | gfc_add_expr_to_block (&body, tmp); | |
4485 | ||
4486 | /* Add a return label if needed. */ | |
4487 | if (current_function_return_label) | |
4488 | { | |
4489 | tmp = build1_v (LABEL_EXPR, current_function_return_label); | |
4490 | gfc_add_expr_to_block (&body, tmp); | |
4491 | } | |
4492 | ||
4493 | tmp = gfc_finish_block (&body); | |
4494 | /* Add code to create and cleanup arrays. */ | |
4495 | tmp = gfc_trans_deferred_vars (sym, tmp); | |
6de9cd9a DN |
4496 | |
4497 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node) | |
4498 | { | |
19e4c59d | 4499 | if (sym->attr.subroutine || sym == sym->result) |
6de9cd9a | 4500 | { |
417ab240 JJ |
4501 | if (current_fake_result_decl != NULL) |
4502 | result = TREE_VALUE (current_fake_result_decl); | |
4503 | else | |
4504 | result = NULL_TREE; | |
6de9cd9a DN |
4505 | current_fake_result_decl = NULL_TREE; |
4506 | } | |
4507 | else | |
4508 | result = sym->result->backend_decl; | |
4509 | ||
702a738b PT |
4510 | if (result != NULL_TREE |
4511 | && sym->attr.function | |
4512 | && !sym->attr.pointer) | |
5046aff5 | 4513 | { |
5b130807 TB |
4514 | if (sym->ts.type == BT_DERIVED |
4515 | && sym->ts.u.derived->attr.alloc_comp) | |
4516 | { | |
4517 | rank = sym->as ? sym->as->rank : 0; | |
4518 | tmp2 = gfc_nullify_alloc_comp (sym->ts.u.derived, result, rank); | |
4519 | gfc_add_expr_to_block (&block, tmp2); | |
4520 | } | |
4521 | else if (sym->attr.allocatable && sym->attr.dimension == 0) | |
4522 | gfc_add_modify (&block, result, fold_convert (TREE_TYPE (result), | |
4523 | null_pointer_node)); | |
5046aff5 PT |
4524 | } |
4525 | ||
766d0c8c DF |
4526 | gfc_add_expr_to_block (&block, tmp); |
4527 | ||
cf7d2eb0 | 4528 | /* Reset recursion-check variable. */ |
702a738b PT |
4529 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) |
4530 | && !is_recursive | |
4531 | && !gfc_option.flag_openmp | |
4532 | && recurcheckvar != NULL_TREE) | |
958dd42b TB |
4533 | { |
4534 | gfc_add_modify (&block, recurcheckvar, boolean_false_node); | |
4535 | recurcheckvar = NULL; | |
4536 | } | |
cf7d2eb0 | 4537 | |
766d0c8c DF |
4538 | if (result == NULL_TREE) |
4539 | { | |
4540 | /* TODO: move to the appropriate place in resolve.c. */ | |
4541 | if (warn_return_type && !sym->attr.referenced && sym == sym->result) | |
4542 | gfc_warning ("Return value of function '%s' at %L not set", | |
4543 | sym->name, &sym->declared_at); | |
5046aff5 | 4544 | |
766d0c8c DF |
4545 | TREE_NO_WARNING(sym->backend_decl) = 1; |
4546 | } | |
6de9cd9a DN |
4547 | else |
4548 | { | |
da4c6ed8 TS |
4549 | /* Set the return value to the dummy result variable. The |
4550 | types may be different for scalar default REAL functions | |
4551 | with -ff2c, therefore we have to convert. */ | |
4552 | tmp = convert (TREE_TYPE (DECL_RESULT (fndecl)), result); | |
44855d8c TS |
4553 | tmp = fold_build2 (MODIFY_EXPR, TREE_TYPE (tmp), |
4554 | DECL_RESULT (fndecl), tmp); | |
923ab88c | 4555 | tmp = build1_v (RETURN_EXPR, tmp); |
6de9cd9a DN |
4556 | gfc_add_expr_to_block (&block, tmp); |
4557 | } | |
4558 | } | |
5046aff5 | 4559 | else |
cf7d2eb0 TB |
4560 | { |
4561 | gfc_add_expr_to_block (&block, tmp); | |
4562 | /* Reset recursion-check variable. */ | |
702a738b PT |
4563 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) |
4564 | && !is_recursive | |
4565 | && !gfc_option.flag_openmp | |
4566 | && recurcheckvar != NULL_TREE) | |
4567 | { | |
4568 | gfc_add_modify (&block, recurcheckvar, boolean_false_node); | |
4569 | recurcheckvar = NULL_TREE; | |
4570 | } | |
cf7d2eb0 | 4571 | } |
5046aff5 | 4572 | |
6de9cd9a DN |
4573 | |
4574 | /* Add all the decls we created during processing. */ | |
4575 | decl = saved_function_decls; | |
4576 | while (decl) | |
4577 | { | |
4578 | tree next; | |
4579 | ||
4580 | next = TREE_CHAIN (decl); | |
4581 | TREE_CHAIN (decl) = NULL_TREE; | |
4582 | pushdecl (decl); | |
4583 | decl = next; | |
4584 | } | |
4585 | saved_function_decls = NULL_TREE; | |
4586 | ||
4587 | DECL_SAVED_TREE (fndecl) = gfc_finish_block (&block); | |
c7c79a09 | 4588 | decl = getdecls (); |
6de9cd9a DN |
4589 | |
4590 | /* Finish off this function and send it for code generation. */ | |
4591 | poplevel (1, 0, 1); | |
4592 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
4593 | ||
c7c79a09 JJ |
4594 | DECL_SAVED_TREE (fndecl) |
4595 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
4596 | DECL_INITIAL (fndecl)); | |
4597 | ||
77f2a970 JJ |
4598 | if (nonlocal_dummy_decls) |
4599 | { | |
4600 | BLOCK_VARS (DECL_INITIAL (fndecl)) | |
4601 | = chainon (BLOCK_VARS (DECL_INITIAL (fndecl)), nonlocal_dummy_decls); | |
4602 | pointer_set_destroy (nonlocal_dummy_decl_pset); | |
4603 | nonlocal_dummy_decls = NULL; | |
4604 | nonlocal_dummy_decl_pset = NULL; | |
4605 | } | |
4606 | ||
6de9cd9a DN |
4607 | /* Output the GENERIC tree. */ |
4608 | dump_function (TDI_original, fndecl); | |
4609 | ||
4610 | /* Store the end of the function, so that we get good line number | |
4611 | info for the epilogue. */ | |
4612 | cfun->function_end_locus = input_location; | |
4613 | ||
4614 | /* We're leaving the context of this function, so zap cfun. | |
4615 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
4616 | tree_rest_of_compilation. */ | |
db2960f4 | 4617 | set_cfun (NULL); |
6de9cd9a DN |
4618 | |
4619 | if (old_context) | |
4620 | { | |
4621 | pop_function_context (); | |
4622 | saved_function_decls = saved_parent_function_decls; | |
4623 | } | |
4624 | current_function_decl = old_context; | |
4625 | ||
4626 | if (decl_function_context (fndecl)) | |
44de5aeb RK |
4627 | /* Register this function with cgraph just far enough to get it |
4628 | added to our parent's nested function list. */ | |
4629 | (void) cgraph_node (fndecl); | |
6de9cd9a | 4630 | else |
9618fb3c | 4631 | cgraph_finalize_function (fndecl, true); |
a64f5186 JJ |
4632 | |
4633 | gfc_trans_use_stmts (ns); | |
bd11e37d | 4634 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
092231a8 TB |
4635 | |
4636 | if (sym->attr.is_main_program) | |
4637 | create_main_function (fndecl); | |
6de9cd9a DN |
4638 | } |
4639 | ||
092231a8 | 4640 | |
6de9cd9a DN |
4641 | void |
4642 | gfc_generate_constructors (void) | |
4643 | { | |
6e45f57b | 4644 | gcc_assert (gfc_static_ctors == NULL_TREE); |
6de9cd9a DN |
4645 | #if 0 |
4646 | tree fnname; | |
4647 | tree type; | |
4648 | tree fndecl; | |
4649 | tree decl; | |
4650 | tree tmp; | |
4651 | ||
4652 | if (gfc_static_ctors == NULL_TREE) | |
4653 | return; | |
4654 | ||
5880f14f | 4655 | fnname = get_file_function_name ("I"); |
b64fca63 | 4656 | type = build_function_type_list (void_type_node, NULL_TREE); |
6de9cd9a | 4657 | |
c2255bc4 AH |
4658 | fndecl = build_decl (input_location, |
4659 | FUNCTION_DECL, fnname, type); | |
6de9cd9a DN |
4660 | TREE_PUBLIC (fndecl) = 1; |
4661 | ||
c2255bc4 AH |
4662 | decl = build_decl (input_location, |
4663 | RESULT_DECL, NULL_TREE, void_type_node); | |
b785f485 RH |
4664 | DECL_ARTIFICIAL (decl) = 1; |
4665 | DECL_IGNORED_P (decl) = 1; | |
6de9cd9a DN |
4666 | DECL_CONTEXT (decl) = fndecl; |
4667 | DECL_RESULT (fndecl) = decl; | |
4668 | ||
4669 | pushdecl (fndecl); | |
4670 | ||
4671 | current_function_decl = fndecl; | |
4672 | ||
0e6df31e | 4673 | rest_of_decl_compilation (fndecl, 1, 0); |
6de9cd9a | 4674 | |
0e6df31e | 4675 | make_decl_rtl (fndecl); |
6de9cd9a | 4676 | |
c8cc8542 | 4677 | init_function_start (fndecl); |
6de9cd9a | 4678 | |
6de9cd9a DN |
4679 | pushlevel (0); |
4680 | ||
4681 | for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors)) | |
4682 | { | |
db3927fb AH |
4683 | tmp = build_call_expr_loc (input_location, |
4684 | TREE_VALUE (gfc_static_ctors), 0); | |
c2255bc4 | 4685 | DECL_SAVED_TREE (fndecl) = build_stmt (input_location, EXPR_STMT, tmp); |
6de9cd9a DN |
4686 | } |
4687 | ||
c7c79a09 | 4688 | decl = getdecls (); |
6de9cd9a DN |
4689 | poplevel (1, 0, 1); |
4690 | ||
4691 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
c7c79a09 JJ |
4692 | DECL_SAVED_TREE (fndecl) |
4693 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
4694 | DECL_INITIAL (fndecl)); | |
6de9cd9a DN |
4695 | |
4696 | free_after_parsing (cfun); | |
4697 | free_after_compilation (cfun); | |
4698 | ||
0f0377f6 | 4699 | tree_rest_of_compilation (fndecl); |
6de9cd9a DN |
4700 | |
4701 | current_function_decl = NULL_TREE; | |
4702 | #endif | |
4703 | } | |
4704 | ||
0de4325e TS |
4705 | /* Translates a BLOCK DATA program unit. This means emitting the |
4706 | commons contained therein plus their initializations. We also emit | |
4707 | a globally visible symbol to make sure that each BLOCK DATA program | |
4708 | unit remains unique. */ | |
4709 | ||
4710 | void | |
4711 | gfc_generate_block_data (gfc_namespace * ns) | |
4712 | { | |
4713 | tree decl; | |
4714 | tree id; | |
4715 | ||
c8cc8542 PB |
4716 | /* Tell the backend the source location of the block data. */ |
4717 | if (ns->proc_name) | |
4718 | gfc_set_backend_locus (&ns->proc_name->declared_at); | |
4719 | else | |
4720 | gfc_set_backend_locus (&gfc_current_locus); | |
4721 | ||
4722 | /* Process the DATA statements. */ | |
0de4325e TS |
4723 | gfc_trans_common (ns); |
4724 | ||
c8cc8542 PB |
4725 | /* Create a global symbol with the mane of the block data. This is to |
4726 | generate linker errors if the same name is used twice. It is never | |
4727 | really used. */ | |
0de4325e TS |
4728 | if (ns->proc_name) |
4729 | id = gfc_sym_mangled_function_id (ns->proc_name); | |
4730 | else | |
4731 | id = get_identifier ("__BLOCK_DATA__"); | |
4732 | ||
c2255bc4 AH |
4733 | decl = build_decl (input_location, |
4734 | VAR_DECL, id, gfc_array_index_type); | |
0de4325e TS |
4735 | TREE_PUBLIC (decl) = 1; |
4736 | TREE_STATIC (decl) = 1; | |
a64f5186 | 4737 | DECL_IGNORED_P (decl) = 1; |
0de4325e TS |
4738 | |
4739 | pushdecl (decl); | |
4740 | rest_of_decl_compilation (decl, 1, 0); | |
4741 | } | |
4742 | ||
83d890b9 | 4743 | |
9abe5e56 DK |
4744 | /* Process the local variables of a BLOCK construct. */ |
4745 | ||
4746 | void | |
4747 | gfc_process_block_locals (gfc_namespace* ns) | |
4748 | { | |
4749 | tree decl; | |
4750 | ||
4751 | gcc_assert (saved_local_decls == NULL_TREE); | |
4752 | generate_local_vars (ns); | |
4753 | ||
4754 | decl = saved_local_decls; | |
4755 | while (decl) | |
4756 | { | |
4757 | tree next; | |
4758 | ||
4759 | next = TREE_CHAIN (decl); | |
4760 | TREE_CHAIN (decl) = NULL_TREE; | |
4761 | pushdecl (decl); | |
4762 | decl = next; | |
4763 | } | |
4764 | saved_local_decls = NULL_TREE; | |
4765 | } | |
4766 | ||
4767 | ||
6de9cd9a | 4768 | #include "gt-fortran-trans-decl.h" |