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6de9cd9a | 1 | /* Backend function setup |
d1e082c2 | 2 | Copyright (C) 2002-2013 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Paul Brook |
4 | ||
9fc4d79b | 5 | This file is part of GCC. |
6de9cd9a | 6 | |
9fc4d79b TS |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
d234d788 | 9 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 10 | version. |
6de9cd9a | 11 | |
9fc4d79b TS |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
6de9cd9a DN |
16 | |
17 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a DN |
20 | |
21 | /* trans-decl.c -- Handling of backend function and variable decls, etc */ | |
22 | ||
23 | #include "config.h" | |
24 | #include "system.h" | |
25 | #include "coretypes.h" | |
d347d97e | 26 | #include "tm.h" |
6de9cd9a DN |
27 | #include "tree.h" |
28 | #include "tree-dump.h" | |
a48ba7e1 | 29 | #include "gimple.h" /* For create_tmp_var_raw. */ |
6de9cd9a | 30 | #include "ggc.h" |
c829d016 TB |
31 | #include "diagnostic-core.h" /* For internal_error. */ |
32 | #include "toplev.h" /* For announce_function. */ | |
6de9cd9a DN |
33 | #include "target.h" |
34 | #include "function.h" | |
6de9cd9a DN |
35 | #include "flags.h" |
36 | #include "cgraph.h" | |
a64f5186 | 37 | #include "debug.h" |
6de9cd9a | 38 | #include "gfortran.h" |
77f2a970 | 39 | #include "pointer-set.h" |
b7e75771 | 40 | #include "constructor.h" |
6de9cd9a DN |
41 | #include "trans.h" |
42 | #include "trans-types.h" | |
43 | #include "trans-array.h" | |
44 | #include "trans-const.h" | |
45 | /* Only for gfc_trans_code. Shouldn't need to include this. */ | |
46 | #include "trans-stmt.h" | |
47 | ||
48 | #define MAX_LABEL_VALUE 99999 | |
49 | ||
50 | ||
51 | /* Holds the result of the function if no result variable specified. */ | |
52 | ||
53 | static GTY(()) tree current_fake_result_decl; | |
5f20c93a | 54 | static GTY(()) tree parent_fake_result_decl; |
6de9cd9a | 55 | |
6de9cd9a DN |
56 | |
57 | /* Holds the variable DECLs for the current function. */ | |
58 | ||
417ab240 JJ |
59 | static GTY(()) tree saved_function_decls; |
60 | static GTY(()) tree saved_parent_function_decls; | |
6de9cd9a | 61 | |
77f2a970 JJ |
62 | static struct pointer_set_t *nonlocal_dummy_decl_pset; |
63 | static GTY(()) tree nonlocal_dummy_decls; | |
6de9cd9a | 64 | |
9abe5e56 DK |
65 | /* Holds the variable DECLs that are locals. */ |
66 | ||
67 | static GTY(()) tree saved_local_decls; | |
68 | ||
6de9cd9a DN |
69 | /* The namespace of the module we're currently generating. Only used while |
70 | outputting decls for module variables. Do not rely on this being set. */ | |
71 | ||
72 | static gfc_namespace *module_namespace; | |
73 | ||
d74d8807 DK |
74 | /* The currently processed procedure symbol. */ |
75 | static gfc_symbol* current_procedure_symbol = NULL; | |
76 | ||
6de9cd9a | 77 | |
b8ff4e88 TB |
78 | /* With -fcoarray=lib: For generating the registering call |
79 | of static coarrays. */ | |
80 | static bool has_coarray_vars; | |
81 | static stmtblock_t caf_init_block; | |
82 | ||
83 | ||
6de9cd9a DN |
84 | /* List of static constructor functions. */ |
85 | ||
86 | tree gfc_static_ctors; | |
87 | ||
88 | ||
89 | /* Function declarations for builtin library functions. */ | |
90 | ||
6de9cd9a DN |
91 | tree gfor_fndecl_pause_numeric; |
92 | tree gfor_fndecl_pause_string; | |
93 | tree gfor_fndecl_stop_numeric; | |
cea59ace | 94 | tree gfor_fndecl_stop_numeric_f08; |
6de9cd9a | 95 | tree gfor_fndecl_stop_string; |
6d1b0f92 | 96 | tree gfor_fndecl_error_stop_numeric; |
d0a4a61c | 97 | tree gfor_fndecl_error_stop_string; |
6de9cd9a | 98 | tree gfor_fndecl_runtime_error; |
f96d606f | 99 | tree gfor_fndecl_runtime_error_at; |
0d52899f | 100 | tree gfor_fndecl_runtime_warning_at; |
1529b8d9 | 101 | tree gfor_fndecl_os_error; |
f96d606f | 102 | tree gfor_fndecl_generate_error; |
092231a8 | 103 | tree gfor_fndecl_set_args; |
944b8b35 | 104 | tree gfor_fndecl_set_fpe; |
68d2e027 | 105 | tree gfor_fndecl_set_options; |
eaa90d25 | 106 | tree gfor_fndecl_set_convert; |
d67ab5ee | 107 | tree gfor_fndecl_set_record_marker; |
07b3bbf2 | 108 | tree gfor_fndecl_set_max_subrecord_length; |
35059811 FXC |
109 | tree gfor_fndecl_ctime; |
110 | tree gfor_fndecl_fdate; | |
25fc05eb | 111 | tree gfor_fndecl_ttynam; |
6de9cd9a DN |
112 | tree gfor_fndecl_in_pack; |
113 | tree gfor_fndecl_in_unpack; | |
114 | tree gfor_fndecl_associated; | |
115 | ||
116 | ||
60386f50 TB |
117 | /* Coarray run-time library function decls. */ |
118 | tree gfor_fndecl_caf_init; | |
119 | tree gfor_fndecl_caf_finalize; | |
b8ff4e88 | 120 | tree gfor_fndecl_caf_register; |
5d81ddd0 | 121 | tree gfor_fndecl_caf_deregister; |
60386f50 TB |
122 | tree gfor_fndecl_caf_critical; |
123 | tree gfor_fndecl_caf_end_critical; | |
124 | tree gfor_fndecl_caf_sync_all; | |
125 | tree gfor_fndecl_caf_sync_images; | |
126 | tree gfor_fndecl_caf_error_stop; | |
127 | tree gfor_fndecl_caf_error_stop_str; | |
128 | ||
129 | /* Coarray global variables for num_images/this_image. */ | |
130 | ||
131 | tree gfort_gvar_caf_num_images; | |
132 | tree gfort_gvar_caf_this_image; | |
133 | ||
134 | ||
6de9cd9a DN |
135 | /* Math functions. Many other math functions are handled in |
136 | trans-intrinsic.c. */ | |
137 | ||
644cb69f | 138 | gfc_powdecl_list gfor_fndecl_math_powi[4][3]; |
6de9cd9a DN |
139 | tree gfor_fndecl_math_ishftc4; |
140 | tree gfor_fndecl_math_ishftc8; | |
644cb69f | 141 | tree gfor_fndecl_math_ishftc16; |
6de9cd9a DN |
142 | |
143 | ||
144 | /* String functions. */ | |
145 | ||
6de9cd9a DN |
146 | tree gfor_fndecl_compare_string; |
147 | tree gfor_fndecl_concat_string; | |
148 | tree gfor_fndecl_string_len_trim; | |
149 | tree gfor_fndecl_string_index; | |
150 | tree gfor_fndecl_string_scan; | |
151 | tree gfor_fndecl_string_verify; | |
152 | tree gfor_fndecl_string_trim; | |
2263c775 | 153 | tree gfor_fndecl_string_minmax; |
6de9cd9a DN |
154 | tree gfor_fndecl_adjustl; |
155 | tree gfor_fndecl_adjustr; | |
d393bbd7 | 156 | tree gfor_fndecl_select_string; |
374929b2 FXC |
157 | tree gfor_fndecl_compare_string_char4; |
158 | tree gfor_fndecl_concat_string_char4; | |
159 | tree gfor_fndecl_string_len_trim_char4; | |
160 | tree gfor_fndecl_string_index_char4; | |
161 | tree gfor_fndecl_string_scan_char4; | |
162 | tree gfor_fndecl_string_verify_char4; | |
163 | tree gfor_fndecl_string_trim_char4; | |
164 | tree gfor_fndecl_string_minmax_char4; | |
165 | tree gfor_fndecl_adjustl_char4; | |
166 | tree gfor_fndecl_adjustr_char4; | |
d393bbd7 FXC |
167 | tree gfor_fndecl_select_string_char4; |
168 | ||
169 | ||
170 | /* Conversion between character kinds. */ | |
171 | tree gfor_fndecl_convert_char1_to_char4; | |
172 | tree gfor_fndecl_convert_char4_to_char1; | |
6de9cd9a DN |
173 | |
174 | ||
175 | /* Other misc. runtime library functions. */ | |
6de9cd9a DN |
176 | tree gfor_fndecl_size0; |
177 | tree gfor_fndecl_size1; | |
b41b2534 | 178 | tree gfor_fndecl_iargc; |
6de9cd9a | 179 | |
a39fafac FXC |
180 | /* Intrinsic functions implemented in Fortran. */ |
181 | tree gfor_fndecl_sc_kind; | |
6de9cd9a DN |
182 | tree gfor_fndecl_si_kind; |
183 | tree gfor_fndecl_sr_kind; | |
184 | ||
5a0aad31 FXC |
185 | /* BLAS gemm functions. */ |
186 | tree gfor_fndecl_sgemm; | |
187 | tree gfor_fndecl_dgemm; | |
188 | tree gfor_fndecl_cgemm; | |
189 | tree gfor_fndecl_zgemm; | |
190 | ||
6de9cd9a DN |
191 | |
192 | static void | |
193 | gfc_add_decl_to_parent_function (tree decl) | |
194 | { | |
6e45f57b | 195 | gcc_assert (decl); |
6de9cd9a DN |
196 | DECL_CONTEXT (decl) = DECL_CONTEXT (current_function_decl); |
197 | DECL_NONLOCAL (decl) = 1; | |
910ad8de | 198 | DECL_CHAIN (decl) = saved_parent_function_decls; |
6de9cd9a DN |
199 | saved_parent_function_decls = decl; |
200 | } | |
201 | ||
202 | void | |
203 | gfc_add_decl_to_function (tree decl) | |
204 | { | |
6e45f57b | 205 | gcc_assert (decl); |
6de9cd9a DN |
206 | TREE_USED (decl) = 1; |
207 | DECL_CONTEXT (decl) = current_function_decl; | |
910ad8de | 208 | DECL_CHAIN (decl) = saved_function_decls; |
6de9cd9a DN |
209 | saved_function_decls = decl; |
210 | } | |
211 | ||
9abe5e56 DK |
212 | static void |
213 | add_decl_as_local (tree decl) | |
214 | { | |
215 | gcc_assert (decl); | |
216 | TREE_USED (decl) = 1; | |
217 | DECL_CONTEXT (decl) = current_function_decl; | |
910ad8de | 218 | DECL_CHAIN (decl) = saved_local_decls; |
9abe5e56 DK |
219 | saved_local_decls = decl; |
220 | } | |
221 | ||
6de9cd9a | 222 | |
c006df4e SB |
223 | /* Build a backend label declaration. Set TREE_USED for named labels. |
224 | The context of the label is always the current_function_decl. All | |
225 | labels are marked artificial. */ | |
6de9cd9a DN |
226 | |
227 | tree | |
228 | gfc_build_label_decl (tree label_id) | |
229 | { | |
230 | /* 2^32 temporaries should be enough. */ | |
231 | static unsigned int tmp_num = 1; | |
232 | tree label_decl; | |
233 | char *label_name; | |
234 | ||
235 | if (label_id == NULL_TREE) | |
236 | { | |
237 | /* Build an internal label name. */ | |
238 | ASM_FORMAT_PRIVATE_NAME (label_name, "L", tmp_num++); | |
239 | label_id = get_identifier (label_name); | |
240 | } | |
241 | else | |
242 | label_name = NULL; | |
243 | ||
244 | /* Build the LABEL_DECL node. Labels have no type. */ | |
c2255bc4 AH |
245 | label_decl = build_decl (input_location, |
246 | LABEL_DECL, label_id, void_type_node); | |
6de9cd9a DN |
247 | DECL_CONTEXT (label_decl) = current_function_decl; |
248 | DECL_MODE (label_decl) = VOIDmode; | |
249 | ||
c006df4e SB |
250 | /* We always define the label as used, even if the original source |
251 | file never references the label. We don't want all kinds of | |
252 | spurious warnings for old-style Fortran code with too many | |
253 | labels. */ | |
254 | TREE_USED (label_decl) = 1; | |
6de9cd9a | 255 | |
c006df4e | 256 | DECL_ARTIFICIAL (label_decl) = 1; |
6de9cd9a DN |
257 | return label_decl; |
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)). */ | |
62603fae JB |
326 | if (sym->attr.is_bind_c == 1 && sym->binding_label) |
327 | return get_identifier (sym->binding_label); | |
8b704316 | 328 | |
cb9e4f55 | 329 | if (sym->module == NULL) |
6de9cd9a DN |
330 | return gfc_sym_identifier (sym); |
331 | else | |
332 | { | |
9998ef84 | 333 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
6de9cd9a DN |
334 | return get_identifier (name); |
335 | } | |
336 | } | |
337 | ||
338 | ||
339 | /* Construct mangled function name from symbol name. */ | |
340 | ||
341 | static tree | |
342 | gfc_sym_mangled_function_id (gfc_symbol * sym) | |
343 | { | |
344 | int has_underscore; | |
345 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
346 | ||
a8b3b0b6 CR |
347 | /* It may be possible to simply use the binding label if it's |
348 | provided, and remove the other checks. Then we could use it | |
349 | for other things if we wished. */ | |
350 | if ((sym->attr.is_bind_c == 1 || sym->attr.is_iso_c == 1) && | |
62603fae | 351 | sym->binding_label) |
a8b3b0b6 CR |
352 | /* use the binding label rather than the mangled name */ |
353 | return get_identifier (sym->binding_label); | |
354 | ||
cb9e4f55 | 355 | if (sym->module == NULL || sym->attr.proc == PROC_EXTERNAL |
c89686a8 PT |
356 | || (sym->module != NULL && (sym->attr.external |
357 | || sym->attr.if_source == IFSRC_IFBODY))) | |
6de9cd9a | 358 | { |
ecf24057 FXC |
359 | /* Main program is mangled into MAIN__. */ |
360 | if (sym->attr.is_main_program) | |
361 | return get_identifier ("MAIN__"); | |
362 | ||
363 | /* Intrinsic procedures are never mangled. */ | |
364 | if (sym->attr.proc == PROC_INTRINSIC) | |
6de9cd9a DN |
365 | return get_identifier (sym->name); |
366 | ||
367 | if (gfc_option.flag_underscoring) | |
368 | { | |
369 | has_underscore = strchr (sym->name, '_') != 0; | |
370 | if (gfc_option.flag_second_underscore && has_underscore) | |
371 | snprintf (name, sizeof name, "%s__", sym->name); | |
372 | else | |
373 | snprintf (name, sizeof name, "%s_", sym->name); | |
374 | return get_identifier (name); | |
375 | } | |
376 | else | |
377 | return get_identifier (sym->name); | |
378 | } | |
379 | else | |
380 | { | |
9998ef84 | 381 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
6de9cd9a DN |
382 | return get_identifier (name); |
383 | } | |
384 | } | |
385 | ||
386 | ||
43ce5e52 FXC |
387 | void |
388 | gfc_set_decl_assembler_name (tree decl, tree name) | |
389 | { | |
390 | tree target_mangled = targetm.mangle_decl_assembler_name (decl, name); | |
391 | SET_DECL_ASSEMBLER_NAME (decl, target_mangled); | |
392 | } | |
393 | ||
394 | ||
bae88af6 TS |
395 | /* Returns true if a variable of specified size should go on the stack. */ |
396 | ||
397 | int | |
398 | gfc_can_put_var_on_stack (tree size) | |
399 | { | |
400 | unsigned HOST_WIDE_INT low; | |
401 | ||
402 | if (!INTEGER_CST_P (size)) | |
403 | return 0; | |
404 | ||
405 | if (gfc_option.flag_max_stack_var_size < 0) | |
406 | return 1; | |
407 | ||
408 | if (TREE_INT_CST_HIGH (size) != 0) | |
409 | return 0; | |
410 | ||
411 | low = TREE_INT_CST_LOW (size); | |
412 | if (low > (unsigned HOST_WIDE_INT) gfc_option.flag_max_stack_var_size) | |
413 | return 0; | |
414 | ||
415 | /* TODO: Set a per-function stack size limit. */ | |
416 | ||
417 | return 1; | |
418 | } | |
419 | ||
420 | ||
b122dc6a JJ |
421 | /* gfc_finish_cray_pointee sets DECL_VALUE_EXPR for a Cray pointee to |
422 | an expression involving its corresponding pointer. There are | |
423 | 2 cases; one for variable size arrays, and one for everything else, | |
424 | because variable-sized arrays require one fewer level of | |
425 | indirection. */ | |
426 | ||
427 | static void | |
428 | gfc_finish_cray_pointee (tree decl, gfc_symbol *sym) | |
429 | { | |
430 | tree ptr_decl = gfc_get_symbol_decl (sym->cp_pointer); | |
431 | tree value; | |
432 | ||
433 | /* Parameters need to be dereferenced. */ | |
8b704316 | 434 | if (sym->cp_pointer->attr.dummy) |
db3927fb AH |
435 | ptr_decl = build_fold_indirect_ref_loc (input_location, |
436 | ptr_decl); | |
b122dc6a JJ |
437 | |
438 | /* Check to see if we're dealing with a variable-sized array. */ | |
439 | if (sym->attr.dimension | |
8b704316 PT |
440 | && TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE) |
441 | { | |
831d7813 | 442 | /* These decls will be dereferenced later, so we don't dereference |
b122dc6a JJ |
443 | them here. */ |
444 | value = convert (TREE_TYPE (decl), ptr_decl); | |
445 | } | |
446 | else | |
447 | { | |
448 | ptr_decl = convert (build_pointer_type (TREE_TYPE (decl)), | |
449 | ptr_decl); | |
db3927fb AH |
450 | value = build_fold_indirect_ref_loc (input_location, |
451 | ptr_decl); | |
b122dc6a JJ |
452 | } |
453 | ||
454 | SET_DECL_VALUE_EXPR (decl, value); | |
455 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
6c7a4dfd | 456 | GFC_DECL_CRAY_POINTEE (decl) = 1; |
b122dc6a JJ |
457 | } |
458 | ||
459 | ||
faf28b3a | 460 | /* Finish processing of a declaration without an initial value. */ |
6de9cd9a DN |
461 | |
462 | static void | |
faf28b3a | 463 | gfc_finish_decl (tree decl) |
6de9cd9a | 464 | { |
faf28b3a TS |
465 | gcc_assert (TREE_CODE (decl) == PARM_DECL |
466 | || DECL_INITIAL (decl) == NULL_TREE); | |
6de9cd9a | 467 | |
faf28b3a TS |
468 | if (TREE_CODE (decl) != VAR_DECL) |
469 | return; | |
6de9cd9a | 470 | |
faf28b3a TS |
471 | if (DECL_SIZE (decl) == NULL_TREE |
472 | && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE) | |
473 | layout_decl (decl, 0); | |
474 | ||
475 | /* A few consistency checks. */ | |
476 | /* A static variable with an incomplete type is an error if it is | |
477 | initialized. Also if it is not file scope. Otherwise, let it | |
478 | through, but if it is not `extern' then it may cause an error | |
479 | message later. */ | |
480 | /* An automatic variable with an incomplete type is an error. */ | |
481 | ||
482 | /* We should know the storage size. */ | |
483 | gcc_assert (DECL_SIZE (decl) != NULL_TREE | |
8b704316 | 484 | || (TREE_STATIC (decl) |
faf28b3a TS |
485 | ? (!DECL_INITIAL (decl) || !DECL_CONTEXT (decl)) |
486 | : DECL_EXTERNAL (decl))); | |
487 | ||
488 | /* The storage size should be constant. */ | |
489 | gcc_assert ((!DECL_EXTERNAL (decl) && !TREE_STATIC (decl)) | |
490 | || !DECL_SIZE (decl) | |
491 | || TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST); | |
6de9cd9a DN |
492 | } |
493 | ||
494 | ||
495 | /* Apply symbol attributes to a variable, and add it to the function scope. */ | |
496 | ||
497 | static void | |
498 | gfc_finish_var_decl (tree decl, gfc_symbol * sym) | |
499 | { | |
7b901ac4 | 500 | tree new_type; |
f8d0aee5 | 501 | /* TREE_ADDRESSABLE means the address of this variable is actually needed. |
6de9cd9a DN |
502 | This is the equivalent of the TARGET variables. |
503 | We also need to set this if the variable is passed by reference in a | |
504 | CALL statement. */ | |
83d890b9 | 505 | |
b122dc6a | 506 | /* Set DECL_VALUE_EXPR for Cray Pointees. */ |
83d890b9 | 507 | if (sym->attr.cray_pointee) |
b122dc6a | 508 | gfc_finish_cray_pointee (decl, sym); |
83d890b9 | 509 | |
6de9cd9a DN |
510 | if (sym->attr.target) |
511 | TREE_ADDRESSABLE (decl) = 1; | |
512 | /* If it wasn't used we wouldn't be getting it. */ | |
513 | TREE_USED (decl) = 1; | |
514 | ||
1e4b1376 TB |
515 | if (sym->attr.flavor == FL_PARAMETER |
516 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) | |
517 | TREE_READONLY (decl) = 1; | |
518 | ||
6de9cd9a DN |
519 | /* Chain this decl to the pending declarations. Don't do pushdecl() |
520 | because this would add them to the current scope rather than the | |
521 | function scope. */ | |
522 | if (current_function_decl != NULL_TREE) | |
523 | { | |
d48734ef | 524 | if (sym->ns->proc_name->backend_decl == current_function_decl |
9abe5e56 | 525 | || sym->result == sym) |
6de9cd9a | 526 | gfc_add_decl_to_function (decl); |
9abe5e56 DK |
527 | else if (sym->ns->proc_name->attr.flavor == FL_LABEL) |
528 | /* This is a BLOCK construct. */ | |
529 | add_decl_as_local (decl); | |
6de9cd9a DN |
530 | else |
531 | gfc_add_decl_to_parent_function (decl); | |
532 | } | |
533 | ||
b122dc6a JJ |
534 | if (sym->attr.cray_pointee) |
535 | return; | |
536 | ||
5af6fa0b | 537 | if(sym->attr.is_bind_c == 1 && sym->binding_label) |
a8b3b0b6 CR |
538 | { |
539 | /* We need to put variables that are bind(c) into the common | |
540 | segment of the object file, because this is what C would do. | |
541 | gfortran would typically put them in either the BSS or | |
542 | initialized data segments, and only mark them as common if | |
543 | they were part of common blocks. However, if they are not put | |
93c71688 | 544 | into common space, then C cannot initialize global Fortran |
a8b3b0b6 CR |
545 | variables that it interoperates with and the draft says that |
546 | either Fortran or C should be able to initialize it (but not | |
547 | both, of course.) (J3/04-007, section 15.3). */ | |
548 | TREE_PUBLIC(decl) = 1; | |
549 | DECL_COMMON(decl) = 1; | |
550 | } | |
8b704316 | 551 | |
6de9cd9a DN |
552 | /* If a variable is USE associated, it's always external. */ |
553 | if (sym->attr.use_assoc) | |
554 | { | |
555 | DECL_EXTERNAL (decl) = 1; | |
556 | TREE_PUBLIC (decl) = 1; | |
557 | } | |
cb9e4f55 | 558 | else if (sym->module && !sym->attr.result && !sym->attr.dummy) |
6de9cd9a | 559 | { |
adf3ed3f | 560 | /* TODO: Don't set sym->module for result or dummy variables. */ |
d48734ef | 561 | gcc_assert (current_function_decl == NULL_TREE || sym->result == sym); |
6de9cd9a | 562 | /* This is the declaration of a module variable. */ |
58341a42 TB |
563 | if (sym->attr.access == ACCESS_UNKNOWN |
564 | && (sym->ns->default_access == ACCESS_PRIVATE | |
565 | || (sym->ns->default_access == ACCESS_UNKNOWN | |
566 | && gfc_option.flag_module_private))) | |
567 | sym->attr.access = ACCESS_PRIVATE; | |
568 | ||
ed4639a9 | 569 | if (sym->attr.access != ACCESS_PRIVATE || sym->attr.public_used) |
5af6fa0b | 570 | TREE_PUBLIC (decl) = 1; |
6de9cd9a DN |
571 | TREE_STATIC (decl) = 1; |
572 | } | |
573 | ||
b7b184a8 PT |
574 | /* Derived types are a bit peculiar because of the possibility of |
575 | a default initializer; this must be applied each time the variable | |
576 | comes into scope it therefore need not be static. These variables | |
577 | are SAVE_NONE but have an initializer. Otherwise explicitly | |
df2fba9e | 578 | initialized variables are SAVE_IMPLICIT and explicitly saved are |
b7b184a8 PT |
579 | SAVE_EXPLICIT. */ |
580 | if (!sym->attr.use_assoc | |
581 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
b8ff4e88 TB |
582 | || (sym->value && sym->ns->proc_name->attr.is_main_program) |
583 | || (gfc_option.coarray == GFC_FCOARRAY_LIB | |
584 | && sym->attr.codimension && !sym->attr.allocatable))) | |
6de9cd9a | 585 | TREE_STATIC (decl) = 1; |
775e6c3a TB |
586 | |
587 | if (sym->attr.volatile_) | |
588 | { | |
775e6c3a | 589 | TREE_THIS_VOLATILE (decl) = 1; |
c28d1d9b | 590 | TREE_SIDE_EFFECTS (decl) = 1; |
7b901ac4 KG |
591 | new_type = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE); |
592 | TREE_TYPE (decl) = new_type; | |
8b704316 | 593 | } |
775e6c3a | 594 | |
6de9cd9a DN |
595 | /* Keep variables larger than max-stack-var-size off stack. */ |
596 | if (!sym->ns->proc_name->attr.recursive | |
597 | && INTEGER_CST_P (DECL_SIZE_UNIT (decl)) | |
9eccb94d JJ |
598 | && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) |
599 | /* Put variable length auto array pointers always into stack. */ | |
600 | && (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE | |
601 | || sym->attr.dimension == 0 | |
602 | || sym->as->type != AS_EXPLICIT | |
603 | || sym->attr.pointer | |
604 | || sym->attr.allocatable) | |
605 | && !DECL_ARTIFICIAL (decl)) | |
6de9cd9a | 606 | TREE_STATIC (decl) = 1; |
6c7a4dfd JJ |
607 | |
608 | /* Handle threadprivate variables. */ | |
8893239d | 609 | if (sym->attr.threadprivate |
6c7a4dfd JJ |
610 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) |
611 | DECL_TLS_MODEL (decl) = decl_default_tls_model (decl); | |
6de9cd9a DN |
612 | } |
613 | ||
614 | ||
615 | /* Allocate the lang-specific part of a decl. */ | |
616 | ||
617 | void | |
618 | gfc_allocate_lang_decl (tree decl) | |
619 | { | |
a9429e29 LB |
620 | DECL_LANG_SPECIFIC (decl) = ggc_alloc_cleared_lang_decl(sizeof |
621 | (struct lang_decl)); | |
6de9cd9a DN |
622 | } |
623 | ||
624 | /* Remember a symbol to generate initialization/cleanup code at function | |
625 | entry/exit. */ | |
626 | ||
627 | static void | |
628 | gfc_defer_symbol_init (gfc_symbol * sym) | |
629 | { | |
630 | gfc_symbol *p; | |
631 | gfc_symbol *last; | |
632 | gfc_symbol *head; | |
633 | ||
634 | /* Don't add a symbol twice. */ | |
635 | if (sym->tlink) | |
636 | return; | |
637 | ||
638 | last = head = sym->ns->proc_name; | |
639 | p = last->tlink; | |
640 | ||
641 | /* Make sure that setup code for dummy variables which are used in the | |
642 | setup of other variables is generated first. */ | |
643 | if (sym->attr.dummy) | |
644 | { | |
645 | /* Find the first dummy arg seen after us, or the first non-dummy arg. | |
646 | This is a circular list, so don't go past the head. */ | |
647 | while (p != head | |
648 | && (!p->attr.dummy || p->dummy_order > sym->dummy_order)) | |
649 | { | |
650 | last = p; | |
651 | p = p->tlink; | |
652 | } | |
653 | } | |
654 | /* Insert in between last and p. */ | |
655 | last->tlink = sym; | |
656 | sym->tlink = p; | |
657 | } | |
658 | ||
659 | ||
0101807c PT |
660 | /* Used in gfc_get_symbol_decl and gfc_get_derived_type to obtain the |
661 | backend_decl for a module symbol, if it all ready exists. If the | |
662 | module gsymbol does not exist, it is created. If the symbol does | |
663 | not exist, it is added to the gsymbol namespace. Returns true if | |
664 | an existing backend_decl is found. */ | |
665 | ||
666 | bool | |
667 | gfc_get_module_backend_decl (gfc_symbol *sym) | |
668 | { | |
669 | gfc_gsymbol *gsym; | |
670 | gfc_symbol *s; | |
671 | gfc_symtree *st; | |
672 | ||
673 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
674 | ||
675 | if (!gsym || (gsym->ns && gsym->type == GSYM_MODULE)) | |
676 | { | |
677 | st = NULL; | |
678 | s = NULL; | |
679 | ||
680 | if (gsym) | |
681 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
682 | ||
683 | if (!s) | |
684 | { | |
685 | if (!gsym) | |
686 | { | |
687 | gsym = gfc_get_gsymbol (sym->module); | |
688 | gsym->type = GSYM_MODULE; | |
689 | gsym->ns = gfc_get_namespace (NULL, 0); | |
690 | } | |
691 | ||
692 | st = gfc_new_symtree (&gsym->ns->sym_root, sym->name); | |
693 | st->n.sym = sym; | |
694 | sym->refs++; | |
695 | } | |
696 | else if (sym->attr.flavor == FL_DERIVED) | |
697 | { | |
c3f34952 TB |
698 | if (s && s->attr.flavor == FL_PROCEDURE) |
699 | { | |
700 | gfc_interface *intr; | |
701 | gcc_assert (s->attr.generic); | |
702 | for (intr = s->generic; intr; intr = intr->next) | |
703 | if (intr->sym->attr.flavor == FL_DERIVED) | |
704 | { | |
705 | s = intr->sym; | |
706 | break; | |
707 | } | |
708 | } | |
709 | ||
0101807c PT |
710 | if (!s->backend_decl) |
711 | s->backend_decl = gfc_get_derived_type (s); | |
712 | gfc_copy_dt_decls_ifequal (s, sym, true); | |
713 | return true; | |
714 | } | |
715 | else if (s->backend_decl) | |
716 | { | |
f29bda83 | 717 | if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) |
0101807c PT |
718 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, |
719 | true); | |
720 | else if (sym->ts.type == BT_CHARACTER) | |
721 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
722 | sym->backend_decl = s->backend_decl; | |
723 | return true; | |
724 | } | |
725 | } | |
726 | return false; | |
727 | } | |
728 | ||
729 | ||
6de9cd9a DN |
730 | /* Create an array index type variable with function scope. */ |
731 | ||
732 | static tree | |
733 | create_index_var (const char * pfx, int nest) | |
734 | { | |
735 | tree decl; | |
736 | ||
737 | decl = gfc_create_var_np (gfc_array_index_type, pfx); | |
738 | if (nest) | |
739 | gfc_add_decl_to_parent_function (decl); | |
740 | else | |
741 | gfc_add_decl_to_function (decl); | |
742 | return decl; | |
743 | } | |
744 | ||
745 | ||
746 | /* Create variables to hold all the non-constant bits of info for a | |
747 | descriptorless array. Remember these in the lang-specific part of the | |
748 | type. */ | |
749 | ||
750 | static void | |
751 | gfc_build_qualified_array (tree decl, gfc_symbol * sym) | |
752 | { | |
753 | tree type; | |
754 | int dim; | |
755 | int nest; | |
52bf62f9 | 756 | gfc_namespace* procns; |
6de9cd9a DN |
757 | |
758 | type = TREE_TYPE (decl); | |
759 | ||
760 | /* We just use the descriptor, if there is one. */ | |
761 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
762 | return; | |
763 | ||
6e45f57b | 764 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
52bf62f9 DK |
765 | procns = gfc_find_proc_namespace (sym->ns); |
766 | nest = (procns->proc_name->backend_decl != current_function_decl) | |
6de9cd9a DN |
767 | && !sym->attr.contained; |
768 | ||
b8ff4e88 | 769 | if (sym->attr.codimension && gfc_option.coarray == GFC_FCOARRAY_LIB |
aa13dc3c | 770 | && sym->as->type != AS_ASSUMED_SHAPE |
b8ff4e88 TB |
771 | && GFC_TYPE_ARRAY_CAF_TOKEN (type) == NULL_TREE) |
772 | { | |
773 | tree token; | |
774 | ||
15e2b595 TB |
775 | token = gfc_create_var_np (build_qualified_type (pvoid_type_node, |
776 | TYPE_QUAL_RESTRICT), | |
777 | "caf_token"); | |
b8ff4e88 TB |
778 | GFC_TYPE_ARRAY_CAF_TOKEN (type) = token; |
779 | DECL_ARTIFICIAL (token) = 1; | |
780 | TREE_STATIC (token) = 1; | |
781 | gfc_add_decl_to_function (token); | |
782 | } | |
783 | ||
6de9cd9a DN |
784 | for (dim = 0; dim < GFC_TYPE_ARRAY_RANK (type); dim++) |
785 | { | |
786 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
01306727 FXC |
787 | { |
788 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
789 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
790 | } | |
aa9c57ec | 791 | /* Don't try to use the unknown bound for assumed shape arrays. */ |
6de9cd9a DN |
792 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE |
793 | && (sym->as->type != AS_ASSUMED_SIZE | |
794 | || dim < GFC_TYPE_ARRAY_RANK (type) - 1)) | |
01306727 FXC |
795 | { |
796 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
797 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
798 | } | |
6de9cd9a DN |
799 | |
800 | if (GFC_TYPE_ARRAY_STRIDE (type, dim) == NULL_TREE) | |
01306727 FXC |
801 | { |
802 | GFC_TYPE_ARRAY_STRIDE (type, dim) = create_index_var ("stride", nest); | |
803 | TREE_NO_WARNING (GFC_TYPE_ARRAY_STRIDE (type, dim)) = 1; | |
804 | } | |
6de9cd9a | 805 | } |
a3935ffc TB |
806 | for (dim = GFC_TYPE_ARRAY_RANK (type); |
807 | dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type); dim++) | |
808 | { | |
809 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
810 | { | |
811 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
812 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
813 | } | |
814 | /* Don't try to use the unknown ubound for the last coarray dimension. */ | |
815 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE | |
816 | && dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type) - 1) | |
817 | { | |
818 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
819 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
820 | } | |
821 | } | |
6de9cd9a DN |
822 | if (GFC_TYPE_ARRAY_OFFSET (type) == NULL_TREE) |
823 | { | |
824 | GFC_TYPE_ARRAY_OFFSET (type) = gfc_create_var_np (gfc_array_index_type, | |
825 | "offset"); | |
01306727 FXC |
826 | TREE_NO_WARNING (GFC_TYPE_ARRAY_OFFSET (type)) = 1; |
827 | ||
6de9cd9a DN |
828 | if (nest) |
829 | gfc_add_decl_to_parent_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
830 | else | |
831 | gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
832 | } | |
417ab240 JJ |
833 | |
834 | if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE | |
835 | && sym->as->type != AS_ASSUMED_SIZE) | |
01306727 FXC |
836 | { |
837 | GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest); | |
838 | TREE_NO_WARNING (GFC_TYPE_ARRAY_SIZE (type)) = 1; | |
839 | } | |
417ab240 JJ |
840 | |
841 | if (POINTER_TYPE_P (type)) | |
842 | { | |
843 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type))); | |
844 | gcc_assert (TYPE_LANG_SPECIFIC (type) | |
845 | == TYPE_LANG_SPECIFIC (TREE_TYPE (type))); | |
846 | type = TREE_TYPE (type); | |
847 | } | |
848 | ||
849 | if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type)) | |
850 | { | |
851 | tree size, range; | |
852 | ||
bc98ed60 TB |
853 | size = fold_build2_loc (input_location, MINUS_EXPR, gfc_array_index_type, |
854 | GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node); | |
417ab240 JJ |
855 | range = build_range_type (gfc_array_index_type, gfc_index_zero_node, |
856 | size); | |
857 | TYPE_DOMAIN (type) = range; | |
858 | layout_type (type); | |
859 | } | |
25c29c56 | 860 | |
25c29c56 JJ |
861 | if (TYPE_NAME (type) != NULL_TREE |
862 | && GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1) != NULL_TREE | |
863 | && TREE_CODE (GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1)) == VAR_DECL) | |
864 | { | |
865 | tree gtype = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
866 | ||
867 | for (dim = 0; dim < sym->as->rank - 1; dim++) | |
868 | { | |
869 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
870 | gtype = TREE_TYPE (gtype); | |
871 | } | |
872 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
873 | if (TYPE_MAX_VALUE (TYPE_DOMAIN (gtype)) == NULL) | |
874 | TYPE_NAME (type) = NULL_TREE; | |
875 | } | |
876 | ||
877 | if (TYPE_NAME (type) == NULL_TREE) | |
878 | { | |
879 | tree gtype = TREE_TYPE (type), rtype, type_decl; | |
880 | ||
881 | for (dim = sym->as->rank - 1; dim >= 0; dim--) | |
882 | { | |
fcd3c5a9 JJ |
883 | tree lbound, ubound; |
884 | lbound = GFC_TYPE_ARRAY_LBOUND (type, dim); | |
885 | ubound = GFC_TYPE_ARRAY_UBOUND (type, dim); | |
886 | rtype = build_range_type (gfc_array_index_type, lbound, ubound); | |
25c29c56 | 887 | gtype = build_array_type (gtype, rtype); |
e429bb49 JJ |
888 | /* Ensure the bound variables aren't optimized out at -O0. |
889 | For -O1 and above they often will be optimized out, but | |
cd3f04c8 JJ |
890 | can be tracked by VTA. Also set DECL_NAMELESS, so that |
891 | the artificial lbound.N or ubound.N DECL_NAME doesn't | |
892 | end up in debug info. */ | |
fcd3c5a9 JJ |
893 | if (lbound && TREE_CODE (lbound) == VAR_DECL |
894 | && DECL_ARTIFICIAL (lbound) && DECL_IGNORED_P (lbound)) | |
895 | { | |
896 | if (DECL_NAME (lbound) | |
897 | && strstr (IDENTIFIER_POINTER (DECL_NAME (lbound)), | |
898 | "lbound") != 0) | |
cd3f04c8 | 899 | DECL_NAMELESS (lbound) = 1; |
fcd3c5a9 JJ |
900 | DECL_IGNORED_P (lbound) = 0; |
901 | } | |
902 | if (ubound && TREE_CODE (ubound) == VAR_DECL | |
903 | && DECL_ARTIFICIAL (ubound) && DECL_IGNORED_P (ubound)) | |
904 | { | |
905 | if (DECL_NAME (ubound) | |
906 | && strstr (IDENTIFIER_POINTER (DECL_NAME (ubound)), | |
907 | "ubound") != 0) | |
cd3f04c8 | 908 | DECL_NAMELESS (ubound) = 1; |
fcd3c5a9 JJ |
909 | DECL_IGNORED_P (ubound) = 0; |
910 | } | |
25c29c56 | 911 | } |
c2255bc4 AH |
912 | TYPE_NAME (type) = type_decl = build_decl (input_location, |
913 | TYPE_DECL, NULL, gtype); | |
25c29c56 JJ |
914 | DECL_ORIGINAL_TYPE (type_decl) = gtype; |
915 | } | |
6de9cd9a DN |
916 | } |
917 | ||
918 | ||
919 | /* For some dummy arguments we don't use the actual argument directly. | |
bae88af6 | 920 | Instead we create a local decl and use that. This allows us to perform |
6de9cd9a DN |
921 | initialization, and construct full type information. */ |
922 | ||
923 | static tree | |
924 | gfc_build_dummy_array_decl (gfc_symbol * sym, tree dummy) | |
925 | { | |
926 | tree decl; | |
927 | tree type; | |
928 | gfc_array_spec *as; | |
929 | char *name; | |
dcfef7d4 | 930 | gfc_packed packed; |
6de9cd9a DN |
931 | int n; |
932 | bool known_size; | |
933 | ||
c62c6622 TB |
934 | if (sym->attr.pointer || sym->attr.allocatable |
935 | || (sym->as && sym->as->type == AS_ASSUMED_RANK)) | |
6de9cd9a DN |
936 | return dummy; |
937 | ||
938 | /* Add to list of variables if not a fake result variable. */ | |
939 | if (sym->attr.result || sym->attr.dummy) | |
940 | gfc_defer_symbol_init (sym); | |
941 | ||
942 | type = TREE_TYPE (dummy); | |
6e45f57b | 943 | gcc_assert (TREE_CODE (dummy) == PARM_DECL |
6de9cd9a DN |
944 | && POINTER_TYPE_P (type)); |
945 | ||
f8d0aee5 | 946 | /* Do we know the element size? */ |
6de9cd9a | 947 | known_size = sym->ts.type != BT_CHARACTER |
bc21d315 | 948 | || INTEGER_CST_P (sym->ts.u.cl->backend_decl); |
8b704316 | 949 | |
6de9cd9a DN |
950 | if (known_size && !GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (type))) |
951 | { | |
952 | /* For descriptorless arrays with known element size the actual | |
953 | argument is sufficient. */ | |
6e45f57b | 954 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
6de9cd9a DN |
955 | gfc_build_qualified_array (dummy, sym); |
956 | return dummy; | |
957 | } | |
958 | ||
959 | type = TREE_TYPE (type); | |
960 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
961 | { | |
fa951694 | 962 | /* Create a descriptorless array pointer. */ |
6de9cd9a | 963 | as = sym->as; |
dcfef7d4 | 964 | packed = PACKED_NO; |
1c3339af FXC |
965 | |
966 | /* Even when -frepack-arrays is used, symbols with TARGET attribute | |
967 | are not repacked. */ | |
968 | if (!gfc_option.flag_repack_arrays || sym->attr.target) | |
6de9cd9a DN |
969 | { |
970 | if (as->type == AS_ASSUMED_SIZE) | |
dcfef7d4 | 971 | packed = PACKED_FULL; |
6de9cd9a DN |
972 | } |
973 | else | |
974 | { | |
975 | if (as->type == AS_EXPLICIT) | |
976 | { | |
dcfef7d4 | 977 | packed = PACKED_FULL; |
6de9cd9a DN |
978 | for (n = 0; n < as->rank; n++) |
979 | { | |
980 | if (!(as->upper[n] | |
981 | && as->lower[n] | |
982 | && as->upper[n]->expr_type == EXPR_CONSTANT | |
983 | && as->lower[n]->expr_type == EXPR_CONSTANT)) | |
dcfef7d4 | 984 | packed = PACKED_PARTIAL; |
6de9cd9a DN |
985 | } |
986 | } | |
987 | else | |
dcfef7d4 | 988 | packed = PACKED_PARTIAL; |
6de9cd9a DN |
989 | } |
990 | ||
991 | type = gfc_typenode_for_spec (&sym->ts); | |
10174ddf MM |
992 | type = gfc_get_nodesc_array_type (type, sym->as, packed, |
993 | !sym->attr.target); | |
6de9cd9a DN |
994 | } |
995 | else | |
996 | { | |
997 | /* We now have an expression for the element size, so create a fully | |
998 | qualified type. Reset sym->backend decl or this will just return the | |
999 | old type. */ | |
3e978d30 | 1000 | DECL_ARTIFICIAL (sym->backend_decl) = 1; |
6de9cd9a DN |
1001 | sym->backend_decl = NULL_TREE; |
1002 | type = gfc_sym_type (sym); | |
dcfef7d4 | 1003 | packed = PACKED_FULL; |
6de9cd9a DN |
1004 | } |
1005 | ||
1006 | ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0); | |
c2255bc4 AH |
1007 | decl = build_decl (input_location, |
1008 | VAR_DECL, get_identifier (name), type); | |
6de9cd9a DN |
1009 | |
1010 | DECL_ARTIFICIAL (decl) = 1; | |
cd3f04c8 | 1011 | DECL_NAMELESS (decl) = 1; |
6de9cd9a DN |
1012 | TREE_PUBLIC (decl) = 0; |
1013 | TREE_STATIC (decl) = 0; | |
1014 | DECL_EXTERNAL (decl) = 0; | |
1015 | ||
1016 | /* We should never get deferred shape arrays here. We used to because of | |
1017 | frontend bugs. */ | |
6e45f57b | 1018 | gcc_assert (sym->as->type != AS_DEFERRED); |
6de9cd9a | 1019 | |
dcfef7d4 TS |
1020 | if (packed == PACKED_PARTIAL) |
1021 | GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1; | |
1022 | else if (packed == PACKED_FULL) | |
1023 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
6de9cd9a DN |
1024 | |
1025 | gfc_build_qualified_array (decl, sym); | |
1026 | ||
1027 | if (DECL_LANG_SPECIFIC (dummy)) | |
1028 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (dummy); | |
1029 | else | |
1030 | gfc_allocate_lang_decl (decl); | |
1031 | ||
1032 | GFC_DECL_SAVED_DESCRIPTOR (decl) = dummy; | |
1033 | ||
1034 | if (sym->ns->proc_name->backend_decl == current_function_decl | |
1035 | || sym->attr.contained) | |
1036 | gfc_add_decl_to_function (decl); | |
1037 | else | |
1038 | gfc_add_decl_to_parent_function (decl); | |
1039 | ||
1040 | return decl; | |
1041 | } | |
1042 | ||
77f2a970 JJ |
1043 | /* For symbol SYM with GFC_DECL_SAVED_DESCRIPTOR used in contained |
1044 | function add a VAR_DECL to the current function with DECL_VALUE_EXPR | |
1045 | pointing to the artificial variable for debug info purposes. */ | |
1046 | ||
1047 | static void | |
1048 | gfc_nonlocal_dummy_array_decl (gfc_symbol *sym) | |
1049 | { | |
1050 | tree decl, dummy; | |
1051 | ||
1052 | if (! nonlocal_dummy_decl_pset) | |
1053 | nonlocal_dummy_decl_pset = pointer_set_create (); | |
1054 | ||
1055 | if (pointer_set_insert (nonlocal_dummy_decl_pset, sym->backend_decl)) | |
1056 | return; | |
1057 | ||
1058 | dummy = GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl); | |
c2255bc4 | 1059 | decl = build_decl (input_location, VAR_DECL, DECL_NAME (dummy), |
77f2a970 JJ |
1060 | TREE_TYPE (sym->backend_decl)); |
1061 | DECL_ARTIFICIAL (decl) = 0; | |
1062 | TREE_USED (decl) = 1; | |
1063 | TREE_PUBLIC (decl) = 0; | |
1064 | TREE_STATIC (decl) = 0; | |
1065 | DECL_EXTERNAL (decl) = 0; | |
1066 | if (DECL_BY_REFERENCE (dummy)) | |
1067 | DECL_BY_REFERENCE (decl) = 1; | |
1068 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (sym->backend_decl); | |
1069 | SET_DECL_VALUE_EXPR (decl, sym->backend_decl); | |
1070 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
1071 | DECL_CONTEXT (decl) = DECL_CONTEXT (sym->backend_decl); | |
910ad8de | 1072 | DECL_CHAIN (decl) = nonlocal_dummy_decls; |
77f2a970 JJ |
1073 | nonlocal_dummy_decls = decl; |
1074 | } | |
6de9cd9a DN |
1075 | |
1076 | /* Return a constant or a variable to use as a string length. Does not | |
1077 | add the decl to the current scope. */ | |
1078 | ||
1079 | static tree | |
1080 | gfc_create_string_length (gfc_symbol * sym) | |
1081 | { | |
bc21d315 JW |
1082 | gcc_assert (sym->ts.u.cl); |
1083 | gfc_conv_const_charlen (sym->ts.u.cl); | |
cadb8f42 | 1084 | |
bc21d315 | 1085 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
6de9cd9a | 1086 | { |
cadb8f42 | 1087 | tree length; |
6052c299 | 1088 | const char *name; |
6de9cd9a | 1089 | |
26c08c03 TB |
1090 | /* The string length variable shall be in static memory if it is either |
1091 | explicitly SAVED, a module variable or with -fno-automatic. Only | |
1092 | relevant is "len=:" - otherwise, it is either a constant length or | |
1093 | it is an automatic variable. */ | |
36085529 TB |
1094 | bool static_length = sym->attr.save |
1095 | || sym->ns->proc_name->attr.flavor == FL_MODULE | |
26c08c03 TB |
1096 | || (gfc_option.flag_max_stack_var_size == 0 |
1097 | && sym->ts.deferred && !sym->attr.dummy | |
1098 | && !sym->attr.result && !sym->attr.function); | |
36085529 TB |
1099 | |
1100 | /* Also prefix the mangled name. We need to call GFC_PREFIX for static | |
1101 | variables as some systems do not support the "." in the assembler name. | |
1102 | For nonstatic variables, the "." does not appear in assembler. */ | |
1103 | if (static_length) | |
1104 | { | |
1105 | if (sym->module) | |
1106 | name = gfc_get_string (GFC_PREFIX ("%s_MOD_%s"), sym->module, | |
1107 | sym->name); | |
1108 | else | |
1109 | name = gfc_get_string (GFC_PREFIX ("%s"), sym->name); | |
1110 | } | |
1111 | else if (sym->module) | |
6052c299 TB |
1112 | name = gfc_get_string (".__%s_MOD_%s", sym->module, sym->name); |
1113 | else | |
1114 | name = gfc_get_string (".%s", sym->name); | |
1115 | ||
c2255bc4 AH |
1116 | length = build_decl (input_location, |
1117 | VAR_DECL, get_identifier (name), | |
d7177ab2 | 1118 | gfc_charlen_type_node); |
6de9cd9a DN |
1119 | DECL_ARTIFICIAL (length) = 1; |
1120 | TREE_USED (length) = 1; | |
417ab240 JJ |
1121 | if (sym->ns->proc_name->tlink != NULL) |
1122 | gfc_defer_symbol_init (sym); | |
cadb8f42 | 1123 | |
bc21d315 | 1124 | sym->ts.u.cl->backend_decl = length; |
6052c299 | 1125 | |
36085529 | 1126 | if (static_length) |
6052c299 TB |
1127 | TREE_STATIC (length) = 1; |
1128 | ||
1129 | if (sym->ns->proc_name->attr.flavor == FL_MODULE | |
1130 | && (sym->attr.access != ACCESS_PRIVATE || sym->attr.public_used)) | |
1131 | TREE_PUBLIC (length) = 1; | |
6de9cd9a DN |
1132 | } |
1133 | ||
bc21d315 JW |
1134 | gcc_assert (sym->ts.u.cl->backend_decl != NULL_TREE); |
1135 | return sym->ts.u.cl->backend_decl; | |
6de9cd9a DN |
1136 | } |
1137 | ||
910450c1 FW |
1138 | /* If a variable is assigned a label, we add another two auxiliary |
1139 | variables. */ | |
1140 | ||
1141 | static void | |
1142 | gfc_add_assign_aux_vars (gfc_symbol * sym) | |
1143 | { | |
1144 | tree addr; | |
1145 | tree length; | |
1146 | tree decl; | |
1147 | ||
1148 | gcc_assert (sym->backend_decl); | |
1149 | ||
1150 | decl = sym->backend_decl; | |
1151 | gfc_allocate_lang_decl (decl); | |
1152 | GFC_DECL_ASSIGN (decl) = 1; | |
c2255bc4 AH |
1153 | length = build_decl (input_location, |
1154 | VAR_DECL, create_tmp_var_name (sym->name), | |
910450c1 | 1155 | gfc_charlen_type_node); |
c2255bc4 AH |
1156 | addr = build_decl (input_location, |
1157 | VAR_DECL, create_tmp_var_name (sym->name), | |
910450c1 FW |
1158 | pvoid_type_node); |
1159 | gfc_finish_var_decl (length, sym); | |
1160 | gfc_finish_var_decl (addr, sym); | |
1161 | /* STRING_LENGTH is also used as flag. Less than -1 means that | |
1162 | ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the | |
1163 | target label's address. Otherwise, value is the length of a format string | |
1164 | and ASSIGN_ADDR is its address. */ | |
1165 | if (TREE_STATIC (length)) | |
df09d1d5 | 1166 | DECL_INITIAL (length) = build_int_cst (gfc_charlen_type_node, -2); |
910450c1 FW |
1167 | else |
1168 | gfc_defer_symbol_init (sym); | |
1169 | ||
1170 | GFC_DECL_STRING_LEN (decl) = length; | |
1171 | GFC_DECL_ASSIGN_ADDR (decl) = addr; | |
1172 | } | |
6de9cd9a | 1173 | |
08a6b8e0 TB |
1174 | |
1175 | static tree | |
1176 | add_attributes_to_decl (symbol_attribute sym_attr, tree list) | |
1177 | { | |
1178 | unsigned id; | |
1179 | tree attr; | |
1180 | ||
1181 | for (id = 0; id < EXT_ATTR_NUM; id++) | |
1182 | if (sym_attr.ext_attr & (1 << id)) | |
1183 | { | |
1184 | attr = build_tree_list ( | |
1185 | get_identifier (ext_attr_list[id].middle_end_name), | |
1186 | NULL_TREE); | |
1187 | list = chainon (list, attr); | |
1188 | } | |
1189 | ||
1190 | return list; | |
1191 | } | |
1192 | ||
1193 | ||
1d0134b3 JW |
1194 | static void build_function_decl (gfc_symbol * sym, bool global); |
1195 | ||
1196 | ||
6de9cd9a DN |
1197 | /* Return the decl for a gfc_symbol, create it if it doesn't already |
1198 | exist. */ | |
1199 | ||
1200 | tree | |
1201 | gfc_get_symbol_decl (gfc_symbol * sym) | |
1202 | { | |
1203 | tree decl; | |
1204 | tree length = NULL_TREE; | |
08a6b8e0 | 1205 | tree attributes; |
6de9cd9a | 1206 | int byref; |
be1f1ed9 | 1207 | bool intrinsic_array_parameter = false; |
431e4685 | 1208 | bool fun_or_res; |
6de9cd9a | 1209 | |
61321991 | 1210 | gcc_assert (sym->attr.referenced |
29be7510 JW |
1211 | || sym->attr.flavor == FL_PROCEDURE |
1212 | || sym->attr.use_assoc | |
1213 | || sym->ns->proc_name->attr.if_source == IFSRC_IFBODY | |
1214 | || (sym->module && sym->attr.if_source != IFSRC_DECL | |
1215 | && sym->backend_decl)); | |
6de9cd9a | 1216 | |
f64edc8b | 1217 | if (sym->ns && sym->ns->proc_name && sym->ns->proc_name->attr.function) |
6de9cd9a DN |
1218 | byref = gfc_return_by_reference (sym->ns->proc_name); |
1219 | else | |
1220 | byref = 0; | |
1221 | ||
eece1eb9 PT |
1222 | /* Make sure that the vtab for the declared type is completed. */ |
1223 | if (sym->ts.type == BT_CLASS) | |
1224 | { | |
7a08eda1 | 1225 | gfc_component *c = CLASS_DATA (sym); |
eece1eb9 | 1226 | if (!c->ts.u.derived->backend_decl) |
58eba515 JW |
1227 | { |
1228 | gfc_find_derived_vtab (c->ts.u.derived); | |
1229 | gfc_get_derived_type (sym->ts.u.derived); | |
1230 | } | |
eece1eb9 PT |
1231 | } |
1232 | ||
8d51f26f PT |
1233 | /* All deferred character length procedures need to retain the backend |
1234 | decl, which is a pointer to the character length in the caller's | |
1235 | namespace and to declare a local character length. */ | |
1236 | if (!byref && sym->attr.function | |
1237 | && sym->ts.type == BT_CHARACTER | |
1238 | && sym->ts.deferred | |
1239 | && sym->ts.u.cl->passed_length == NULL | |
1240 | && sym->ts.u.cl->backend_decl | |
1241 | && TREE_CODE (sym->ts.u.cl->backend_decl) == PARM_DECL) | |
1242 | { | |
1243 | sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1244 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1245 | length = gfc_create_string_length (sym); | |
1246 | } | |
1247 | ||
431e4685 TB |
1248 | fun_or_res = byref && (sym->attr.result |
1249 | || (sym->attr.function && sym->ts.deferred)); | |
1250 | if ((sym->attr.dummy && ! sym->attr.function) || fun_or_res) | |
6de9cd9a DN |
1251 | { |
1252 | /* Return via extra parameter. */ | |
1253 | if (sym->attr.result && byref | |
1254 | && !sym->backend_decl) | |
1255 | { | |
1256 | sym->backend_decl = | |
1257 | DECL_ARGUMENTS (sym->ns->proc_name->backend_decl); | |
d198b59a JJ |
1258 | /* For entry master function skip over the __entry |
1259 | argument. */ | |
1260 | if (sym->ns->proc_name->attr.entry_master) | |
910ad8de | 1261 | sym->backend_decl = DECL_CHAIN (sym->backend_decl); |
6de9cd9a DN |
1262 | } |
1263 | ||
1264 | /* Dummy variables should already have been created. */ | |
6e45f57b | 1265 | gcc_assert (sym->backend_decl); |
6de9cd9a DN |
1266 | |
1267 | /* Create a character length variable. */ | |
1268 | if (sym->ts.type == BT_CHARACTER) | |
1269 | { | |
8d51f26f PT |
1270 | /* For a deferred dummy, make a new string length variable. */ |
1271 | if (sym->ts.deferred | |
1272 | && | |
1273 | (sym->ts.u.cl->passed_length == sym->ts.u.cl->backend_decl)) | |
1274 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1275 | ||
431e4685 | 1276 | if (sym->ts.deferred && fun_or_res |
8d51f26f PT |
1277 | && sym->ts.u.cl->passed_length == NULL |
1278 | && sym->ts.u.cl->backend_decl) | |
1279 | { | |
1280 | sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1281 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1282 | } | |
1283 | ||
bc21d315 | 1284 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
417ab240 JJ |
1285 | length = gfc_create_string_length (sym); |
1286 | else | |
bc21d315 | 1287 | length = sym->ts.u.cl->backend_decl; |
417ab240 | 1288 | if (TREE_CODE (length) == VAR_DECL |
e5b16755 | 1289 | && DECL_FILE_SCOPE_P (length)) |
6de9cd9a | 1290 | { |
3e978d30 PT |
1291 | /* Add the string length to the same context as the symbol. */ |
1292 | if (DECL_CONTEXT (sym->backend_decl) == current_function_decl) | |
1293 | gfc_add_decl_to_function (length); | |
1294 | else | |
1295 | gfc_add_decl_to_parent_function (length); | |
1296 | ||
1297 | gcc_assert (DECL_CONTEXT (sym->backend_decl) == | |
1298 | DECL_CONTEXT (length)); | |
1299 | ||
417ab240 | 1300 | gfc_defer_symbol_init (sym); |
a41baa64 | 1301 | } |
6de9cd9a DN |
1302 | } |
1303 | ||
1304 | /* Use a copy of the descriptor for dummy arrays. */ | |
4ca9939b TB |
1305 | if ((sym->attr.dimension || sym->attr.codimension) |
1306 | && !TREE_USED (sym->backend_decl)) | |
6de9cd9a | 1307 | { |
3e978d30 PT |
1308 | decl = gfc_build_dummy_array_decl (sym, sym->backend_decl); |
1309 | /* Prevent the dummy from being detected as unused if it is copied. */ | |
1310 | if (sym->backend_decl != NULL && decl != sym->backend_decl) | |
1311 | DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
1312 | sym->backend_decl = decl; | |
6de9cd9a DN |
1313 | } |
1314 | ||
1315 | TREE_USED (sym->backend_decl) = 1; | |
910450c1 FW |
1316 | if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0) |
1317 | { | |
1318 | gfc_add_assign_aux_vars (sym); | |
1319 | } | |
77f2a970 JJ |
1320 | |
1321 | if (sym->attr.dimension | |
1322 | && DECL_LANG_SPECIFIC (sym->backend_decl) | |
1323 | && GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl) | |
1324 | && DECL_CONTEXT (sym->backend_decl) != current_function_decl) | |
1325 | gfc_nonlocal_dummy_array_decl (sym); | |
1326 | ||
c49ea23d PT |
1327 | if (sym->ts.type == BT_CLASS && sym->backend_decl) |
1328 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1329 | ||
1330 | if (sym->ts.type == BT_CLASS && sym->backend_decl) | |
1331 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1332 | return sym->backend_decl; | |
6de9cd9a DN |
1333 | } |
1334 | ||
1335 | if (sym->backend_decl) | |
1336 | return sym->backend_decl; | |
1337 | ||
4ed5664e TB |
1338 | /* Special case for array-valued named constants from intrinsic |
1339 | procedures; those are inlined. */ | |
1340 | if (sym->attr.use_assoc && sym->from_intmod | |
1341 | && sym->attr.flavor == FL_PARAMETER) | |
1342 | intrinsic_array_parameter = true; | |
1343 | ||
9fa52231 | 1344 | /* If use associated compilation, use the module |
43afc047 | 1345 | declaration. */ |
9fa52231 TB |
1346 | if ((sym->attr.flavor == FL_VARIABLE |
1347 | || sym->attr.flavor == FL_PARAMETER) | |
1348 | && sym->attr.use_assoc | |
1349 | && !intrinsic_array_parameter | |
1350 | && sym->module | |
1351 | && gfc_get_module_backend_decl (sym)) | |
c49ea23d PT |
1352 | { |
1353 | if (sym->ts.type == BT_CLASS && sym->backend_decl) | |
1354 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1355 | return sym->backend_decl; | |
1356 | } | |
3af8d8cb | 1357 | |
6de9cd9a DN |
1358 | if (sym->attr.flavor == FL_PROCEDURE) |
1359 | { | |
1d0134b3 JW |
1360 | /* Catch function declarations. Only used for actual parameters, |
1361 | procedure pointers and procptr initialization targets. */ | |
1362 | if (sym->attr.external || sym->attr.use_assoc || sym->attr.intrinsic) | |
1363 | { | |
1364 | decl = gfc_get_extern_function_decl (sym); | |
1365 | gfc_set_decl_location (decl, &sym->declared_at); | |
1366 | } | |
1367 | else | |
1368 | { | |
1369 | if (!sym->backend_decl) | |
1370 | build_function_decl (sym, false); | |
1371 | decl = sym->backend_decl; | |
1372 | } | |
6de9cd9a DN |
1373 | return decl; |
1374 | } | |
1375 | ||
1376 | if (sym->attr.intrinsic) | |
1377 | internal_error ("intrinsic variable which isn't a procedure"); | |
1378 | ||
1379 | /* Create string length decl first so that they can be used in the | |
1380 | type declaration. */ | |
1381 | if (sym->ts.type == BT_CHARACTER) | |
1382 | length = gfc_create_string_length (sym); | |
1383 | ||
1384 | /* Create the decl for the variable. */ | |
c2255bc4 AH |
1385 | decl = build_decl (sym->declared_at.lb->location, |
1386 | VAR_DECL, gfc_sym_identifier (sym), gfc_sym_type (sym)); | |
c8cc8542 | 1387 | |
43ce5e52 FXC |
1388 | /* Add attributes to variables. Functions are handled elsewhere. */ |
1389 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); | |
1390 | decl_attributes (&decl, attributes, 0); | |
1391 | ||
f8d0aee5 | 1392 | /* Symbols from modules should have their assembler names mangled. |
6de9cd9a DN |
1393 | This is done here rather than in gfc_finish_var_decl because it |
1394 | is different for string length variables. */ | |
cb9e4f55 | 1395 | if (sym->module) |
a64f5186 | 1396 | { |
43ce5e52 | 1397 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); |
be1f1ed9 | 1398 | if (sym->attr.use_assoc && !intrinsic_array_parameter) |
a64f5186 JJ |
1399 | DECL_IGNORED_P (decl) = 1; |
1400 | } | |
6de9cd9a | 1401 | |
b3996898 JJ |
1402 | if (sym->attr.select_type_temporary) |
1403 | { | |
1404 | DECL_ARTIFICIAL (decl) = 1; | |
1405 | DECL_IGNORED_P (decl) = 1; | |
1406 | } | |
1407 | ||
4ca9939b | 1408 | if (sym->attr.dimension || sym->attr.codimension) |
6de9cd9a DN |
1409 | { |
1410 | /* Create variables to hold the non-constant bits of array info. */ | |
1411 | gfc_build_qualified_array (decl, sym); | |
1412 | ||
fe4e525c TB |
1413 | if (sym->attr.contiguous |
1414 | || ((sym->attr.allocatable || !sym->attr.dummy) && !sym->attr.pointer)) | |
6de9cd9a DN |
1415 | GFC_DECL_PACKED_ARRAY (decl) = 1; |
1416 | } | |
1417 | ||
1517fd57 | 1418 | /* Remember this variable for allocation/cleanup. */ |
9f3761c5 | 1419 | if (sym->attr.dimension || sym->attr.allocatable || sym->attr.codimension |
1517fd57 | 1420 | || (sym->ts.type == BT_CLASS && |
7a08eda1 JW |
1421 | (CLASS_DATA (sym)->attr.dimension |
1422 | || CLASS_DATA (sym)->attr.allocatable)) | |
1517fd57 JW |
1423 | || (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
1424 | /* This applies a derived type default initializer. */ | |
1425 | || (sym->ts.type == BT_DERIVED | |
1426 | && sym->attr.save == SAVE_NONE | |
1427 | && !sym->attr.data | |
1428 | && !sym->attr.allocatable | |
1429 | && (sym->value && !sym->ns->proc_name->attr.is_main_program) | |
be1f1ed9 | 1430 | && !(sym->attr.use_assoc && !intrinsic_array_parameter))) |
b7b184a8 | 1431 | gfc_defer_symbol_init (sym); |
5046aff5 | 1432 | |
6de9cd9a DN |
1433 | gfc_finish_var_decl (decl, sym); |
1434 | ||
597073ac | 1435 | if (sym->ts.type == BT_CHARACTER) |
6de9cd9a | 1436 | { |
6de9cd9a DN |
1437 | /* Character variables need special handling. */ |
1438 | gfc_allocate_lang_decl (decl); | |
1439 | ||
597073ac | 1440 | if (TREE_CODE (length) != INTEGER_CST) |
6de9cd9a | 1441 | { |
6de9cd9a | 1442 | gfc_finish_var_decl (length, sym); |
6e45f57b | 1443 | gcc_assert (!sym->value); |
6de9cd9a | 1444 | } |
6de9cd9a | 1445 | } |
1d6b7f39 PT |
1446 | else if (sym->attr.subref_array_pointer) |
1447 | { | |
1448 | /* We need the span for these beasts. */ | |
1449 | gfc_allocate_lang_decl (decl); | |
1450 | } | |
1451 | ||
1452 | if (sym->attr.subref_array_pointer) | |
1453 | { | |
1454 | tree span; | |
1455 | GFC_DECL_SUBREF_ARRAY_P (decl) = 1; | |
c2255bc4 AH |
1456 | span = build_decl (input_location, |
1457 | VAR_DECL, create_tmp_var_name ("span"), | |
1d6b7f39 PT |
1458 | gfc_array_index_type); |
1459 | gfc_finish_var_decl (span, sym); | |
de870512 JJ |
1460 | TREE_STATIC (span) = TREE_STATIC (decl); |
1461 | DECL_ARTIFICIAL (span) = 1; | |
1d6b7f39 PT |
1462 | |
1463 | GFC_DECL_SPAN (decl) = span; | |
de870512 | 1464 | GFC_TYPE_ARRAY_SPAN (TREE_TYPE (decl)) = span; |
1d6b7f39 PT |
1465 | } |
1466 | ||
c49ea23d PT |
1467 | if (sym->ts.type == BT_CLASS) |
1468 | GFC_DECL_CLASS(decl) = 1; | |
1469 | ||
6de9cd9a DN |
1470 | sym->backend_decl = decl; |
1471 | ||
910450c1 | 1472 | if (sym->attr.assign) |
6c0e51c4 | 1473 | gfc_add_assign_aux_vars (sym); |
910450c1 | 1474 | |
be1f1ed9 TB |
1475 | if (intrinsic_array_parameter) |
1476 | { | |
1477 | TREE_STATIC (decl) = 1; | |
1478 | DECL_EXTERNAL (decl) = 0; | |
1479 | } | |
1480 | ||
1481 | if (TREE_STATIC (decl) | |
1482 | && !(sym->attr.use_assoc && !intrinsic_array_parameter) | |
2b56d6a4 TB |
1483 | && (sym->attr.save || sym->ns->proc_name->attr.is_main_program |
1484 | || gfc_option.flag_max_stack_var_size == 0 | |
b8ff4e88 | 1485 | || sym->attr.data || sym->ns->proc_name->attr.flavor == FL_MODULE) |
badd9e69 TB |
1486 | && (gfc_option.coarray != GFC_FCOARRAY_LIB |
1487 | || !sym->attr.codimension || sym->attr.allocatable)) | |
2b56d6a4 TB |
1488 | { |
1489 | /* Add static initializer. For procedures, it is only needed if | |
1490 | SAVE is specified otherwise they need to be reinitialized | |
1491 | every time the procedure is entered. The TREE_STATIC is | |
1492 | in this case due to -fmax-stack-var-size=. */ | |
597073ac | 1493 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
1d0134b3 | 1494 | TREE_TYPE (decl), |
badd9e69 TB |
1495 | sym->attr.dimension |
1496 | || (sym->attr.codimension | |
1497 | && sym->attr.allocatable), | |
1d0134b3 JW |
1498 | sym->attr.pointer |
1499 | || sym->attr.allocatable, | |
1500 | sym->attr.proc_pointer); | |
597073ac PB |
1501 | } |
1502 | ||
77f2a970 JJ |
1503 | if (!TREE_STATIC (decl) |
1504 | && POINTER_TYPE_P (TREE_TYPE (decl)) | |
1505 | && !sym->attr.pointer | |
1506 | && !sym->attr.allocatable | |
b3996898 JJ |
1507 | && !sym->attr.proc_pointer |
1508 | && !sym->attr.select_type_temporary) | |
77f2a970 JJ |
1509 | DECL_BY_REFERENCE (decl) = 1; |
1510 | ||
cf651ca2 TB |
1511 | if (sym->attr.vtab |
1512 | || (sym->name[0] == '_' && strncmp ("__def_init", sym->name, 10) == 0)) | |
755634e6 | 1513 | TREE_READONLY (decl) = 1; |
cf651ca2 | 1514 | |
6de9cd9a DN |
1515 | return decl; |
1516 | } | |
1517 | ||
1518 | ||
7b5b57b7 PB |
1519 | /* Substitute a temporary variable in place of the real one. */ |
1520 | ||
1521 | void | |
1522 | gfc_shadow_sym (gfc_symbol * sym, tree decl, gfc_saved_var * save) | |
1523 | { | |
1524 | save->attr = sym->attr; | |
1525 | save->decl = sym->backend_decl; | |
1526 | ||
1527 | gfc_clear_attr (&sym->attr); | |
1528 | sym->attr.referenced = 1; | |
1529 | sym->attr.flavor = FL_VARIABLE; | |
1530 | ||
1531 | sym->backend_decl = decl; | |
1532 | } | |
1533 | ||
1534 | ||
1535 | /* Restore the original variable. */ | |
1536 | ||
1537 | void | |
1538 | gfc_restore_sym (gfc_symbol * sym, gfc_saved_var * save) | |
1539 | { | |
1540 | sym->attr = save->attr; | |
1541 | sym->backend_decl = save->decl; | |
1542 | } | |
1543 | ||
1544 | ||
8fb74da4 JW |
1545 | /* Declare a procedure pointer. */ |
1546 | ||
1547 | static tree | |
1548 | get_proc_pointer_decl (gfc_symbol *sym) | |
1549 | { | |
1550 | tree decl; | |
08a6b8e0 | 1551 | tree attributes; |
8fb74da4 JW |
1552 | |
1553 | decl = sym->backend_decl; | |
1554 | if (decl) | |
1555 | return decl; | |
1556 | ||
c2255bc4 AH |
1557 | decl = build_decl (input_location, |
1558 | VAR_DECL, get_identifier (sym->name), | |
8fb74da4 JW |
1559 | build_pointer_type (gfc_get_function_type (sym))); |
1560 | ||
5e4404b8 JW |
1561 | if (sym->module) |
1562 | { | |
1563 | /* Apply name mangling. */ | |
1564 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); | |
1565 | if (sym->attr.use_assoc) | |
1566 | DECL_IGNORED_P (decl) = 1; | |
1567 | } | |
8b704316 | 1568 | |
06c7153f TB |
1569 | if ((sym->ns->proc_name |
1570 | && sym->ns->proc_name->backend_decl == current_function_decl) | |
8fb74da4 JW |
1571 | || sym->attr.contained) |
1572 | gfc_add_decl_to_function (decl); | |
6e0d2de7 | 1573 | else if (sym->ns->proc_name->attr.flavor != FL_MODULE) |
8fb74da4 JW |
1574 | gfc_add_decl_to_parent_function (decl); |
1575 | ||
1576 | sym->backend_decl = decl; | |
1577 | ||
6e0d2de7 JW |
1578 | /* If a variable is USE associated, it's always external. */ |
1579 | if (sym->attr.use_assoc) | |
1580 | { | |
1581 | DECL_EXTERNAL (decl) = 1; | |
1582 | TREE_PUBLIC (decl) = 1; | |
1583 | } | |
1584 | else if (sym->module && sym->ns->proc_name->attr.flavor == FL_MODULE) | |
1585 | { | |
1586 | /* This is the declaration of a module variable. */ | |
1587 | TREE_PUBLIC (decl) = 1; | |
1588 | TREE_STATIC (decl) = 1; | |
1589 | } | |
1590 | ||
8fb74da4 JW |
1591 | if (!sym->attr.use_assoc |
1592 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
1593 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
1594 | TREE_STATIC (decl) = 1; | |
1595 | ||
1596 | if (TREE_STATIC (decl) && sym->value) | |
1597 | { | |
1598 | /* Add static initializer. */ | |
1599 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
1d0134b3 JW |
1600 | TREE_TYPE (decl), |
1601 | sym->attr.dimension, | |
1602 | false, true); | |
8fb74da4 JW |
1603 | } |
1604 | ||
a6c975bd JJ |
1605 | /* Handle threadprivate procedure pointers. */ |
1606 | if (sym->attr.threadprivate | |
1607 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) | |
1608 | DECL_TLS_MODEL (decl) = decl_default_tls_model (decl); | |
1609 | ||
08a6b8e0 TB |
1610 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1611 | decl_attributes (&decl, attributes, 0); | |
1612 | ||
8fb74da4 JW |
1613 | return decl; |
1614 | } | |
1615 | ||
1616 | ||
6de9cd9a DN |
1617 | /* Get a basic decl for an external function. */ |
1618 | ||
1619 | tree | |
1620 | gfc_get_extern_function_decl (gfc_symbol * sym) | |
1621 | { | |
1622 | tree type; | |
1623 | tree fndecl; | |
08a6b8e0 | 1624 | tree attributes; |
6de9cd9a DN |
1625 | gfc_expr e; |
1626 | gfc_intrinsic_sym *isym; | |
1627 | gfc_expr argexpr; | |
e6472bce | 1628 | char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */ |
6de9cd9a DN |
1629 | tree name; |
1630 | tree mangled_name; | |
71a7778c | 1631 | gfc_gsymbol *gsym; |
6de9cd9a DN |
1632 | |
1633 | if (sym->backend_decl) | |
1634 | return sym->backend_decl; | |
1635 | ||
3d79abbd PB |
1636 | /* We should never be creating external decls for alternate entry points. |
1637 | The procedure may be an alternate entry point, but we don't want/need | |
1638 | to know that. */ | |
6e45f57b | 1639 | gcc_assert (!(sym->attr.entry || sym->attr.entry_master)); |
3d79abbd | 1640 | |
8fb74da4 JW |
1641 | if (sym->attr.proc_pointer) |
1642 | return get_proc_pointer_decl (sym); | |
1643 | ||
71a7778c PT |
1644 | /* See if this is an external procedure from the same file. If so, |
1645 | return the backend_decl. */ | |
1646 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->name); | |
1647 | ||
9fa52231 TB |
1648 | if ((!sym->attr.use_assoc || sym->attr.if_source != IFSRC_DECL) |
1649 | && !sym->backend_decl | |
1650 | && gsym && gsym->ns | |
1651 | && ((gsym->type == GSYM_SUBROUTINE) || (gsym->type == GSYM_FUNCTION)) | |
1652 | && (gsym->ns->proc_name->backend_decl || !sym->attr.intrinsic)) | |
71a7778c | 1653 | { |
fb55ca75 TB |
1654 | if (!gsym->ns->proc_name->backend_decl) |
1655 | { | |
1656 | /* By construction, the external function cannot be | |
1657 | a contained procedure. */ | |
1658 | locus old_loc; | |
fb55ca75 | 1659 | |
363aab21 | 1660 | gfc_save_backend_locus (&old_loc); |
af16bc76 | 1661 | push_cfun (NULL); |
fb55ca75 TB |
1662 | |
1663 | gfc_create_function_decl (gsym->ns, true); | |
1664 | ||
1665 | pop_cfun (); | |
363aab21 | 1666 | gfc_restore_backend_locus (&old_loc); |
fb55ca75 TB |
1667 | } |
1668 | ||
71a7778c PT |
1669 | /* If the namespace has entries, the proc_name is the |
1670 | entry master. Find the entry and use its backend_decl. | |
1671 | otherwise, use the proc_name backend_decl. */ | |
1672 | if (gsym->ns->entries) | |
1673 | { | |
1674 | gfc_entry_list *entry = gsym->ns->entries; | |
1675 | ||
1676 | for (; entry; entry = entry->next) | |
1677 | { | |
1678 | if (strcmp (gsym->name, entry->sym->name) == 0) | |
1679 | { | |
1680 | sym->backend_decl = entry->sym->backend_decl; | |
1681 | break; | |
1682 | } | |
1683 | } | |
1684 | } | |
1685 | else | |
6a018495 | 1686 | sym->backend_decl = gsym->ns->proc_name->backend_decl; |
71a7778c PT |
1687 | |
1688 | if (sym->backend_decl) | |
6a018495 TB |
1689 | { |
1690 | /* Avoid problems of double deallocation of the backend declaration | |
1691 | later in gfc_trans_use_stmts; cf. PR 45087. */ | |
1692 | if (sym->attr.if_source != IFSRC_DECL && sym->attr.use_assoc) | |
1693 | sym->attr.use_assoc = 0; | |
1694 | ||
1695 | return sym->backend_decl; | |
1696 | } | |
71a7778c PT |
1697 | } |
1698 | ||
3af8d8cb PT |
1699 | /* See if this is a module procedure from the same file. If so, |
1700 | return the backend_decl. */ | |
1701 | if (sym->module) | |
1702 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
1703 | ||
9fa52231 | 1704 | if (gsym && gsym->ns && gsym->type == GSYM_MODULE) |
3af8d8cb PT |
1705 | { |
1706 | gfc_symbol *s; | |
1707 | ||
1708 | s = NULL; | |
1709 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
1710 | if (s && s->backend_decl) | |
1711 | { | |
f29bda83 TB |
1712 | if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) |
1713 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, | |
1714 | true); | |
1715 | else if (sym->ts.type == BT_CHARACTER) | |
1716 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
3af8d8cb PT |
1717 | sym->backend_decl = s->backend_decl; |
1718 | return sym->backend_decl; | |
1719 | } | |
1720 | } | |
1721 | ||
6de9cd9a DN |
1722 | if (sym->attr.intrinsic) |
1723 | { | |
1724 | /* Call the resolution function to get the actual name. This is | |
1725 | a nasty hack which relies on the resolution functions only looking | |
1726 | at the first argument. We pass NULL for the second argument | |
1727 | otherwise things like AINT get confused. */ | |
1728 | isym = gfc_find_function (sym->name); | |
6e45f57b | 1729 | gcc_assert (isym->resolve.f0 != NULL); |
6de9cd9a DN |
1730 | |
1731 | memset (&e, 0, sizeof (e)); | |
1732 | e.expr_type = EXPR_FUNCTION; | |
1733 | ||
1734 | memset (&argexpr, 0, sizeof (argexpr)); | |
6e45f57b | 1735 | gcc_assert (isym->formal); |
6de9cd9a DN |
1736 | argexpr.ts = isym->formal->ts; |
1737 | ||
1738 | if (isym->formal->next == NULL) | |
1739 | isym->resolve.f1 (&e, &argexpr); | |
1740 | else | |
1741 | { | |
0e7e7e6e FXC |
1742 | if (isym->formal->next->next == NULL) |
1743 | isym->resolve.f2 (&e, &argexpr, NULL); | |
1744 | else | |
1745 | { | |
5cda5098 FXC |
1746 | if (isym->formal->next->next->next == NULL) |
1747 | isym->resolve.f3 (&e, &argexpr, NULL, NULL); | |
1748 | else | |
1749 | { | |
1750 | /* All specific intrinsics take less than 5 arguments. */ | |
1751 | gcc_assert (isym->formal->next->next->next->next == NULL); | |
1752 | isym->resolve.f4 (&e, &argexpr, NULL, NULL, NULL); | |
1753 | } | |
0e7e7e6e | 1754 | } |
6de9cd9a | 1755 | } |
973ff4c0 TS |
1756 | |
1757 | if (gfc_option.flag_f2c | |
1758 | && ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind) | |
1759 | || e.ts.type == BT_COMPLEX)) | |
1760 | { | |
1761 | /* Specific which needs a different implementation if f2c | |
1762 | calling conventions are used. */ | |
e6472bce | 1763 | sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name); |
973ff4c0 TS |
1764 | } |
1765 | else | |
e6472bce | 1766 | sprintf (s, "_gfortran_specific%s", e.value.function.name); |
973ff4c0 | 1767 | |
6de9cd9a DN |
1768 | name = get_identifier (s); |
1769 | mangled_name = name; | |
1770 | } | |
1771 | else | |
1772 | { | |
1773 | name = gfc_sym_identifier (sym); | |
1774 | mangled_name = gfc_sym_mangled_function_id (sym); | |
1775 | } | |
1776 | ||
1777 | type = gfc_get_function_type (sym); | |
c2255bc4 AH |
1778 | fndecl = build_decl (input_location, |
1779 | FUNCTION_DECL, name, type); | |
6de9cd9a | 1780 | |
384f586a KT |
1781 | /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; |
1782 | TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
dd5a833e | 1783 | the opposite of declaring a function as static in C). */ |
384f586a KT |
1784 | DECL_EXTERNAL (fndecl) = 1; |
1785 | TREE_PUBLIC (fndecl) = 1; | |
1786 | ||
43ce5e52 FXC |
1787 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1788 | decl_attributes (&fndecl, attributes, 0); | |
1789 | ||
1790 | gfc_set_decl_assembler_name (fndecl, mangled_name); | |
6de9cd9a DN |
1791 | |
1792 | /* Set the context of this decl. */ | |
1793 | if (0 && sym->ns && sym->ns->proc_name) | |
1794 | { | |
1795 | /* TODO: Add external decls to the appropriate scope. */ | |
1796 | DECL_CONTEXT (fndecl) = sym->ns->proc_name->backend_decl; | |
1797 | } | |
1798 | else | |
1799 | { | |
f8d0aee5 | 1800 | /* Global declaration, e.g. intrinsic subroutine. */ |
6de9cd9a DN |
1801 | DECL_CONTEXT (fndecl) = NULL_TREE; |
1802 | } | |
1803 | ||
6de9cd9a DN |
1804 | /* Set attributes for PURE functions. A call to PURE function in the |
1805 | Fortran 95 sense is both pure and without side effects in the C | |
1806 | sense. */ | |
033418dc | 1807 | if (sym->attr.pure || sym->attr.implicit_pure) |
6de9cd9a | 1808 | { |
cf013e9f | 1809 | if (sym->attr.function && !gfc_return_by_reference (sym)) |
becfd6e5 | 1810 | DECL_PURE_P (fndecl) = 1; |
b7e6a6b3 TS |
1811 | /* TODO: check if pure SUBROUTINEs don't have INTENT(OUT) |
1812 | parameters and don't use alternate returns (is this | |
1813 | allowed?). In that case, calls to them are meaningless, and | |
3d79abbd | 1814 | can be optimized away. See also in build_function_decl(). */ |
b7e6a6b3 | 1815 | TREE_SIDE_EFFECTS (fndecl) = 0; |
6de9cd9a DN |
1816 | } |
1817 | ||
fe58e076 TK |
1818 | /* Mark non-returning functions. */ |
1819 | if (sym->attr.noreturn) | |
1820 | TREE_THIS_VOLATILE(fndecl) = 1; | |
1821 | ||
6de9cd9a DN |
1822 | sym->backend_decl = fndecl; |
1823 | ||
1824 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1825 | pushdecl_top_level (fndecl); | |
1826 | ||
1827 | return fndecl; | |
1828 | } | |
1829 | ||
1830 | ||
1831 | /* Create a declaration for a procedure. For external functions (in the C | |
3d79abbd PB |
1832 | sense) use gfc_get_extern_function_decl. HAS_ENTRIES is true if this is |
1833 | a master function with alternate entry points. */ | |
6de9cd9a | 1834 | |
3d79abbd | 1835 | static void |
fb55ca75 | 1836 | build_function_decl (gfc_symbol * sym, bool global) |
6de9cd9a | 1837 | { |
08a6b8e0 | 1838 | tree fndecl, type, attributes; |
6de9cd9a | 1839 | symbol_attribute attr; |
3d79abbd | 1840 | tree result_decl; |
6de9cd9a DN |
1841 | gfc_formal_arglist *f; |
1842 | ||
6e45f57b | 1843 | gcc_assert (!sym->attr.external); |
6de9cd9a | 1844 | |
1d0134b3 JW |
1845 | if (sym->backend_decl) |
1846 | return; | |
1847 | ||
c8cc8542 PB |
1848 | /* Set the line and filename. sym->declared_at seems to point to the |
1849 | last statement for subroutines, but it'll do for now. */ | |
1850 | gfc_set_backend_locus (&sym->declared_at); | |
1851 | ||
6de9cd9a | 1852 | /* Allow only one nesting level. Allow public declarations. */ |
6e45f57b | 1853 | gcc_assert (current_function_decl == NULL_TREE |
e5b16755 RG |
1854 | || DECL_FILE_SCOPE_P (current_function_decl) |
1855 | || (TREE_CODE (DECL_CONTEXT (current_function_decl)) | |
1856 | == NAMESPACE_DECL)); | |
6de9cd9a DN |
1857 | |
1858 | type = gfc_get_function_type (sym); | |
c2255bc4 AH |
1859 | fndecl = build_decl (input_location, |
1860 | FUNCTION_DECL, gfc_sym_identifier (sym), type); | |
6de9cd9a | 1861 | |
43ce5e52 FXC |
1862 | attr = sym->attr; |
1863 | ||
384f586a KT |
1864 | /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; |
1865 | TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
dd5a833e | 1866 | the opposite of declaring a function as static in C). */ |
384f586a KT |
1867 | DECL_EXTERNAL (fndecl) = 0; |
1868 | ||
58341a42 TB |
1869 | if (sym->attr.access == ACCESS_UNKNOWN && sym->module |
1870 | && (sym->ns->default_access == ACCESS_PRIVATE | |
1871 | || (sym->ns->default_access == ACCESS_UNKNOWN | |
1872 | && gfc_option.flag_module_private))) | |
1873 | sym->attr.access = ACCESS_PRIVATE; | |
1874 | ||
384f586a | 1875 | if (!current_function_decl |
5af6fa0b | 1876 | && !sym->attr.entry_master && !sym->attr.is_main_program |
cdd244b8 TB |
1877 | && (sym->attr.access != ACCESS_PRIVATE || sym->binding_label |
1878 | || sym->attr.public_used)) | |
384f586a KT |
1879 | TREE_PUBLIC (fndecl) = 1; |
1880 | ||
29be7510 JW |
1881 | if (sym->attr.referenced || sym->attr.entry_master) |
1882 | TREE_USED (fndecl) = 1; | |
1883 | ||
43ce5e52 FXC |
1884 | attributes = add_attributes_to_decl (attr, NULL_TREE); |
1885 | decl_attributes (&fndecl, attributes, 0); | |
1886 | ||
6de9cd9a | 1887 | /* Figure out the return type of the declared function, and build a |
f8d0aee5 | 1888 | RESULT_DECL for it. If this is a subroutine with alternate |
6de9cd9a | 1889 | returns, build a RESULT_DECL for it. */ |
6de9cd9a DN |
1890 | result_decl = NULL_TREE; |
1891 | /* TODO: Shouldn't this just be TREE_TYPE (TREE_TYPE (fndecl)). */ | |
1892 | if (attr.function) | |
1893 | { | |
1894 | if (gfc_return_by_reference (sym)) | |
1895 | type = void_type_node; | |
1896 | else | |
1897 | { | |
1898 | if (sym->result != sym) | |
1899 | result_decl = gfc_sym_identifier (sym->result); | |
1900 | ||
1901 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
1902 | } | |
1903 | } | |
1904 | else | |
1905 | { | |
1906 | /* Look for alternate return placeholders. */ | |
1907 | int has_alternate_returns = 0; | |
4cbc9039 | 1908 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
6de9cd9a DN |
1909 | { |
1910 | if (f->sym == NULL) | |
1911 | { | |
1912 | has_alternate_returns = 1; | |
1913 | break; | |
1914 | } | |
1915 | } | |
1916 | ||
1917 | if (has_alternate_returns) | |
1918 | type = integer_type_node; | |
1919 | else | |
1920 | type = void_type_node; | |
1921 | } | |
1922 | ||
c2255bc4 AH |
1923 | result_decl = build_decl (input_location, |
1924 | RESULT_DECL, result_decl, type); | |
b785f485 RH |
1925 | DECL_ARTIFICIAL (result_decl) = 1; |
1926 | DECL_IGNORED_P (result_decl) = 1; | |
6de9cd9a DN |
1927 | DECL_CONTEXT (result_decl) = fndecl; |
1928 | DECL_RESULT (fndecl) = result_decl; | |
1929 | ||
1930 | /* Don't call layout_decl for a RESULT_DECL. | |
f8d0aee5 | 1931 | layout_decl (result_decl, 0); */ |
6de9cd9a | 1932 | |
6de9cd9a | 1933 | /* TREE_STATIC means the function body is defined here. */ |
1d754240 | 1934 | TREE_STATIC (fndecl) = 1; |
6de9cd9a | 1935 | |
f8d0aee5 | 1936 | /* Set attributes for PURE functions. A call to a PURE function in the |
6de9cd9a DN |
1937 | Fortran 95 sense is both pure and without side effects in the C |
1938 | sense. */ | |
033418dc | 1939 | if (attr.pure || attr.implicit_pure) |
6de9cd9a | 1940 | { |
b7e6a6b3 | 1941 | /* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments |
86bf520d | 1942 | including an alternate return. In that case it can also be |
1f2959f0 | 1943 | marked as PURE. See also in gfc_get_extern_function_decl(). */ |
a01db3bf | 1944 | if (attr.function && !gfc_return_by_reference (sym)) |
becfd6e5 | 1945 | DECL_PURE_P (fndecl) = 1; |
6de9cd9a DN |
1946 | TREE_SIDE_EFFECTS (fndecl) = 0; |
1947 | } | |
1948 | ||
08a6b8e0 | 1949 | |
6de9cd9a DN |
1950 | /* Layout the function declaration and put it in the binding level |
1951 | of the current function. */ | |
fb55ca75 | 1952 | |
755634e6 | 1953 | if (global) |
fb55ca75 TB |
1954 | pushdecl_top_level (fndecl); |
1955 | else | |
1956 | pushdecl (fndecl); | |
3d79abbd | 1957 | |
e5b16755 RG |
1958 | /* Perform name mangling if this is a top level or module procedure. */ |
1959 | if (current_function_decl == NULL_TREE) | |
1960 | gfc_set_decl_assembler_name (fndecl, gfc_sym_mangled_function_id (sym)); | |
1961 | ||
3d79abbd PB |
1962 | sym->backend_decl = fndecl; |
1963 | } | |
1964 | ||
1965 | ||
1966 | /* Create the DECL_ARGUMENTS for a procedure. */ | |
1967 | ||
1968 | static void | |
1969 | create_function_arglist (gfc_symbol * sym) | |
1970 | { | |
1971 | tree fndecl; | |
1972 | gfc_formal_arglist *f; | |
417ab240 JJ |
1973 | tree typelist, hidden_typelist; |
1974 | tree arglist, hidden_arglist; | |
3d79abbd PB |
1975 | tree type; |
1976 | tree parm; | |
1977 | ||
1978 | fndecl = sym->backend_decl; | |
1979 | ||
1d754240 PB |
1980 | /* Build formal argument list. Make sure that their TREE_CONTEXT is |
1981 | the new FUNCTION_DECL node. */ | |
1d754240 | 1982 | arglist = NULL_TREE; |
417ab240 | 1983 | hidden_arglist = NULL_TREE; |
1d754240 | 1984 | typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
3d79abbd PB |
1985 | |
1986 | if (sym->attr.entry_master) | |
1987 | { | |
1988 | type = TREE_VALUE (typelist); | |
c2255bc4 AH |
1989 | parm = build_decl (input_location, |
1990 | PARM_DECL, get_identifier ("__entry"), type); | |
8b704316 | 1991 | |
3d79abbd PB |
1992 | DECL_CONTEXT (parm) = fndecl; |
1993 | DECL_ARG_TYPE (parm) = type; | |
1994 | TREE_READONLY (parm) = 1; | |
faf28b3a | 1995 | gfc_finish_decl (parm); |
3e978d30 | 1996 | DECL_ARTIFICIAL (parm) = 1; |
3d79abbd PB |
1997 | |
1998 | arglist = chainon (arglist, parm); | |
1999 | typelist = TREE_CHAIN (typelist); | |
2000 | } | |
2001 | ||
1d754240 | 2002 | if (gfc_return_by_reference (sym)) |
6de9cd9a | 2003 | { |
417ab240 | 2004 | tree type = TREE_VALUE (typelist), length = NULL; |
6de9cd9a | 2005 | |
1d754240 PB |
2006 | if (sym->ts.type == BT_CHARACTER) |
2007 | { | |
1d754240 | 2008 | /* Length of character result. */ |
417ab240 | 2009 | tree len_type = TREE_VALUE (TREE_CHAIN (typelist)); |
6de9cd9a | 2010 | |
c2255bc4 AH |
2011 | length = build_decl (input_location, |
2012 | PARM_DECL, | |
1d754240 | 2013 | get_identifier (".__result"), |
417ab240 | 2014 | len_type); |
bc21d315 | 2015 | if (!sym->ts.u.cl->length) |
1d754240 | 2016 | { |
bc21d315 | 2017 | sym->ts.u.cl->backend_decl = length; |
1d754240 | 2018 | TREE_USED (length) = 1; |
6de9cd9a | 2019 | } |
6e45f57b | 2020 | gcc_assert (TREE_CODE (length) == PARM_DECL); |
1d754240 | 2021 | DECL_CONTEXT (length) = fndecl; |
417ab240 | 2022 | DECL_ARG_TYPE (length) = len_type; |
1d754240 | 2023 | TREE_READONLY (length) = 1; |
ca0e9281 | 2024 | DECL_ARTIFICIAL (length) = 1; |
faf28b3a | 2025 | gfc_finish_decl (length); |
bc21d315 JW |
2026 | if (sym->ts.u.cl->backend_decl == NULL |
2027 | || sym->ts.u.cl->backend_decl == length) | |
417ab240 JJ |
2028 | { |
2029 | gfc_symbol *arg; | |
2030 | tree backend_decl; | |
6de9cd9a | 2031 | |
bc21d315 | 2032 | if (sym->ts.u.cl->backend_decl == NULL) |
417ab240 | 2033 | { |
c2255bc4 AH |
2034 | tree len = build_decl (input_location, |
2035 | VAR_DECL, | |
417ab240 JJ |
2036 | get_identifier ("..__result"), |
2037 | gfc_charlen_type_node); | |
2038 | DECL_ARTIFICIAL (len) = 1; | |
2039 | TREE_USED (len) = 1; | |
bc21d315 | 2040 | sym->ts.u.cl->backend_decl = len; |
417ab240 | 2041 | } |
6de9cd9a | 2042 | |
417ab240 JJ |
2043 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ |
2044 | arg = sym->result ? sym->result : sym; | |
2045 | backend_decl = arg->backend_decl; | |
2046 | /* Temporary clear it, so that gfc_sym_type creates complete | |
2047 | type. */ | |
2048 | arg->backend_decl = NULL; | |
2049 | type = gfc_sym_type (arg); | |
2050 | arg->backend_decl = backend_decl; | |
2051 | type = build_reference_type (type); | |
2052 | } | |
2053 | } | |
6de9cd9a | 2054 | |
c2255bc4 AH |
2055 | parm = build_decl (input_location, |
2056 | PARM_DECL, get_identifier ("__result"), type); | |
6de9cd9a | 2057 | |
417ab240 JJ |
2058 | DECL_CONTEXT (parm) = fndecl; |
2059 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2060 | TREE_READONLY (parm) = 1; | |
2061 | DECL_ARTIFICIAL (parm) = 1; | |
faf28b3a | 2062 | gfc_finish_decl (parm); |
6de9cd9a | 2063 | |
417ab240 JJ |
2064 | arglist = chainon (arglist, parm); |
2065 | typelist = TREE_CHAIN (typelist); | |
6de9cd9a | 2066 | |
417ab240 JJ |
2067 | if (sym->ts.type == BT_CHARACTER) |
2068 | { | |
2069 | gfc_allocate_lang_decl (parm); | |
2070 | arglist = chainon (arglist, length); | |
1d754240 PB |
2071 | typelist = TREE_CHAIN (typelist); |
2072 | } | |
2073 | } | |
6de9cd9a | 2074 | |
417ab240 | 2075 | hidden_typelist = typelist; |
4cbc9039 | 2076 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
417ab240 JJ |
2077 | if (f->sym != NULL) /* Ignore alternate returns. */ |
2078 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2079 | ||
4cbc9039 | 2080 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
1d754240 PB |
2081 | { |
2082 | char name[GFC_MAX_SYMBOL_LEN + 2]; | |
417ab240 | 2083 | |
1d754240 PB |
2084 | /* Ignore alternate returns. */ |
2085 | if (f->sym == NULL) | |
2086 | continue; | |
6de9cd9a | 2087 | |
1d754240 | 2088 | type = TREE_VALUE (typelist); |
6de9cd9a | 2089 | |
33215bb3 TB |
2090 | if (f->sym->ts.type == BT_CHARACTER |
2091 | && (!sym->attr.is_bind_c || sym->attr.entry_master)) | |
417ab240 JJ |
2092 | { |
2093 | tree len_type = TREE_VALUE (hidden_typelist); | |
2094 | tree length = NULL_TREE; | |
8d51f26f PT |
2095 | if (!f->sym->ts.deferred) |
2096 | gcc_assert (len_type == gfc_charlen_type_node); | |
2097 | else | |
2098 | gcc_assert (POINTER_TYPE_P (len_type)); | |
417ab240 JJ |
2099 | |
2100 | strcpy (&name[1], f->sym->name); | |
2101 | name[0] = '_'; | |
c2255bc4 AH |
2102 | length = build_decl (input_location, |
2103 | PARM_DECL, get_identifier (name), len_type); | |
6de9cd9a | 2104 | |
417ab240 JJ |
2105 | hidden_arglist = chainon (hidden_arglist, length); |
2106 | DECL_CONTEXT (length) = fndecl; | |
2107 | DECL_ARTIFICIAL (length) = 1; | |
2108 | DECL_ARG_TYPE (length) = len_type; | |
2109 | TREE_READONLY (length) = 1; | |
faf28b3a | 2110 | gfc_finish_decl (length); |
6de9cd9a | 2111 | |
cadb8f42 | 2112 | /* Remember the passed value. */ |
8b704316 | 2113 | if (!f->sym->ts.u.cl || f->sym->ts.u.cl->passed_length) |
3ba558db TB |
2114 | { |
2115 | /* This can happen if the same type is used for multiple | |
2116 | arguments. We need to copy cl as otherwise | |
2117 | cl->passed_length gets overwritten. */ | |
b76e28c6 | 2118 | f->sym->ts.u.cl = gfc_new_charlen (f->sym->ns, f->sym->ts.u.cl); |
3ba558db | 2119 | } |
bc21d315 | 2120 | f->sym->ts.u.cl->passed_length = length; |
6de9cd9a | 2121 | |
417ab240 | 2122 | /* Use the passed value for assumed length variables. */ |
bc21d315 | 2123 | if (!f->sym->ts.u.cl->length) |
6de9cd9a | 2124 | { |
417ab240 | 2125 | TREE_USED (length) = 1; |
bc21d315 JW |
2126 | gcc_assert (!f->sym->ts.u.cl->backend_decl); |
2127 | f->sym->ts.u.cl->backend_decl = length; | |
417ab240 JJ |
2128 | } |
2129 | ||
2130 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2131 | ||
bc21d315 JW |
2132 | if (f->sym->ts.u.cl->backend_decl == NULL |
2133 | || f->sym->ts.u.cl->backend_decl == length) | |
417ab240 | 2134 | { |
bc21d315 | 2135 | if (f->sym->ts.u.cl->backend_decl == NULL) |
417ab240 JJ |
2136 | gfc_create_string_length (f->sym); |
2137 | ||
2138 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ | |
2139 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
2140 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2141 | else | |
2142 | type = gfc_sym_type (f->sym); | |
6de9cd9a | 2143 | } |
6de9cd9a | 2144 | } |
60f97ac8 TB |
2145 | /* For noncharacter scalar intrinsic types, VALUE passes the value, |
2146 | hence, the optional status cannot be transfered via a NULL pointer. | |
2147 | Thus, we will use a hidden argument in that case. */ | |
2148 | else if (f->sym->attr.optional && f->sym->attr.value | |
2149 | && !f->sym->attr.dimension && !f->sym->ts.type != BT_CLASS | |
2150 | && f->sym->ts.type != BT_DERIVED) | |
2151 | { | |
2152 | tree tmp; | |
2153 | strcpy (&name[1], f->sym->name); | |
2154 | name[0] = '_'; | |
2155 | tmp = build_decl (input_location, | |
2156 | PARM_DECL, get_identifier (name), | |
2157 | boolean_type_node); | |
2158 | ||
2159 | hidden_arglist = chainon (hidden_arglist, tmp); | |
2160 | DECL_CONTEXT (tmp) = fndecl; | |
2161 | DECL_ARTIFICIAL (tmp) = 1; | |
2162 | DECL_ARG_TYPE (tmp) = boolean_type_node; | |
2163 | TREE_READONLY (tmp) = 1; | |
2164 | gfc_finish_decl (tmp); | |
2165 | } | |
6de9cd9a | 2166 | |
417ab240 JJ |
2167 | /* For non-constant length array arguments, make sure they use |
2168 | a different type node from TYPE_ARG_TYPES type. */ | |
2169 | if (f->sym->attr.dimension | |
2170 | && type == TREE_VALUE (typelist) | |
2171 | && TREE_CODE (type) == POINTER_TYPE | |
2172 | && GFC_ARRAY_TYPE_P (type) | |
2173 | && f->sym->as->type != AS_ASSUMED_SIZE | |
2174 | && ! COMPLETE_TYPE_P (TREE_TYPE (type))) | |
2175 | { | |
2176 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
2177 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2178 | else | |
2179 | type = gfc_sym_type (f->sym); | |
2180 | } | |
2181 | ||
8fb74da4 JW |
2182 | if (f->sym->attr.proc_pointer) |
2183 | type = build_pointer_type (type); | |
2184 | ||
c28d1d9b TB |
2185 | if (f->sym->attr.volatile_) |
2186 | type = build_qualified_type (type, TYPE_QUAL_VOLATILE); | |
2187 | ||
df2fba9e | 2188 | /* Build the argument declaration. */ |
c2255bc4 AH |
2189 | parm = build_decl (input_location, |
2190 | PARM_DECL, gfc_sym_identifier (f->sym), type); | |
417ab240 | 2191 | |
c28d1d9b TB |
2192 | if (f->sym->attr.volatile_) |
2193 | { | |
2194 | TREE_THIS_VOLATILE (parm) = 1; | |
2195 | TREE_SIDE_EFFECTS (parm) = 1; | |
2196 | } | |
2197 | ||
417ab240 JJ |
2198 | /* Fill in arg stuff. */ |
2199 | DECL_CONTEXT (parm) = fndecl; | |
2200 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2201 | /* All implementation args are read-only. */ | |
2202 | TREE_READONLY (parm) = 1; | |
714495cd JJ |
2203 | if (POINTER_TYPE_P (type) |
2204 | && (!f->sym->attr.proc_pointer | |
2205 | && f->sym->attr.flavor != FL_PROCEDURE)) | |
2206 | DECL_BY_REFERENCE (parm) = 1; | |
417ab240 | 2207 | |
faf28b3a | 2208 | gfc_finish_decl (parm); |
417ab240 JJ |
2209 | |
2210 | f->sym->backend_decl = parm; | |
2211 | ||
aa13dc3c TB |
2212 | /* Coarrays which are descriptorless or assumed-shape pass with |
2213 | -fcoarray=lib the token and the offset as hidden arguments. */ | |
0c53708e TB |
2214 | if (f->sym->attr.codimension |
2215 | && gfc_option.coarray == GFC_FCOARRAY_LIB | |
aa13dc3c | 2216 | && !f->sym->attr.allocatable) |
0c53708e TB |
2217 | { |
2218 | tree caf_type; | |
2219 | tree token; | |
2220 | tree offset; | |
2221 | ||
2222 | gcc_assert (f->sym->backend_decl != NULL_TREE | |
2223 | && !sym->attr.is_bind_c); | |
2224 | caf_type = TREE_TYPE (f->sym->backend_decl); | |
2225 | ||
0c53708e TB |
2226 | token = build_decl (input_location, PARM_DECL, |
2227 | create_tmp_var_name ("caf_token"), | |
2228 | build_qualified_type (pvoid_type_node, | |
2229 | TYPE_QUAL_RESTRICT)); | |
aa13dc3c TB |
2230 | if (f->sym->as->type == AS_ASSUMED_SHAPE) |
2231 | { | |
2232 | gcc_assert (DECL_LANG_SPECIFIC (f->sym->backend_decl) == NULL | |
2233 | || GFC_DECL_TOKEN (f->sym->backend_decl) == NULL_TREE); | |
2234 | if (DECL_LANG_SPECIFIC (f->sym->backend_decl) == NULL) | |
2235 | gfc_allocate_lang_decl (f->sym->backend_decl); | |
2236 | GFC_DECL_TOKEN (f->sym->backend_decl) = token; | |
2237 | } | |
2238 | else | |
2239 | { | |
2240 | gcc_assert (GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) == NULL_TREE); | |
2241 | GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) = token; | |
2242 | } | |
8b704316 | 2243 | |
0c53708e TB |
2244 | DECL_CONTEXT (token) = fndecl; |
2245 | DECL_ARTIFICIAL (token) = 1; | |
2246 | DECL_ARG_TYPE (token) = TREE_VALUE (typelist); | |
2247 | TREE_READONLY (token) = 1; | |
2248 | hidden_arglist = chainon (hidden_arglist, token); | |
2249 | gfc_finish_decl (token); | |
2250 | ||
0c53708e TB |
2251 | offset = build_decl (input_location, PARM_DECL, |
2252 | create_tmp_var_name ("caf_offset"), | |
2253 | gfc_array_index_type); | |
2254 | ||
aa13dc3c TB |
2255 | if (f->sym->as->type == AS_ASSUMED_SHAPE) |
2256 | { | |
2257 | gcc_assert (GFC_DECL_CAF_OFFSET (f->sym->backend_decl) | |
2258 | == NULL_TREE); | |
2259 | GFC_DECL_CAF_OFFSET (f->sym->backend_decl) = offset; | |
2260 | } | |
2261 | else | |
2262 | { | |
2263 | gcc_assert (GFC_TYPE_ARRAY_CAF_OFFSET (caf_type) == NULL_TREE); | |
2264 | GFC_TYPE_ARRAY_CAF_OFFSET (caf_type) = offset; | |
2265 | } | |
0c53708e TB |
2266 | DECL_CONTEXT (offset) = fndecl; |
2267 | DECL_ARTIFICIAL (offset) = 1; | |
2268 | DECL_ARG_TYPE (offset) = TREE_VALUE (typelist); | |
2269 | TREE_READONLY (offset) = 1; | |
2270 | hidden_arglist = chainon (hidden_arglist, offset); | |
2271 | gfc_finish_decl (offset); | |
2272 | } | |
2273 | ||
417ab240 | 2274 | arglist = chainon (arglist, parm); |
1d754240 | 2275 | typelist = TREE_CHAIN (typelist); |
6de9cd9a | 2276 | } |
1d754240 | 2277 | |
7861a5ce TB |
2278 | /* Add the hidden string length parameters, unless the procedure |
2279 | is bind(C). */ | |
2280 | if (!sym->attr.is_bind_c) | |
2281 | arglist = chainon (arglist, hidden_arglist); | |
417ab240 | 2282 | |
884d2e6b SE |
2283 | gcc_assert (hidden_typelist == NULL_TREE |
2284 | || TREE_VALUE (hidden_typelist) == void_type_node); | |
1d754240 | 2285 | DECL_ARGUMENTS (fndecl) = arglist; |
3d79abbd | 2286 | } |
1d754240 | 2287 | |
3d79abbd PB |
2288 | /* Do the setup necessary before generating the body of a function. */ |
2289 | ||
2290 | static void | |
2291 | trans_function_start (gfc_symbol * sym) | |
2292 | { | |
2293 | tree fndecl; | |
2294 | ||
2295 | fndecl = sym->backend_decl; | |
2296 | ||
f8d0aee5 | 2297 | /* Let GCC know the current scope is this function. */ |
3d79abbd PB |
2298 | current_function_decl = fndecl; |
2299 | ||
f8d0aee5 | 2300 | /* Let the world know what we're about to do. */ |
3d79abbd PB |
2301 | announce_function (fndecl); |
2302 | ||
e5b16755 | 2303 | if (DECL_FILE_SCOPE_P (fndecl)) |
3d79abbd | 2304 | { |
f8d0aee5 | 2305 | /* Create RTL for function declaration. */ |
3d79abbd PB |
2306 | rest_of_decl_compilation (fndecl, 1, 0); |
2307 | } | |
2308 | ||
f8d0aee5 | 2309 | /* Create RTL for function definition. */ |
3d79abbd PB |
2310 | make_decl_rtl (fndecl); |
2311 | ||
b6b27e98 | 2312 | allocate_struct_function (fndecl, false); |
3d79abbd | 2313 | |
f8d0aee5 | 2314 | /* function.c requires a push at the start of the function. */ |
87a60f68 | 2315 | pushlevel (); |
3d79abbd PB |
2316 | } |
2317 | ||
2318 | /* Create thunks for alternate entry points. */ | |
2319 | ||
2320 | static void | |
fb55ca75 | 2321 | build_entry_thunks (gfc_namespace * ns, bool global) |
3d79abbd PB |
2322 | { |
2323 | gfc_formal_arglist *formal; | |
2324 | gfc_formal_arglist *thunk_formal; | |
2325 | gfc_entry_list *el; | |
2326 | gfc_symbol *thunk_sym; | |
2327 | stmtblock_t body; | |
2328 | tree thunk_fndecl; | |
3d79abbd | 2329 | tree tmp; |
c8cc8542 | 2330 | locus old_loc; |
3d79abbd PB |
2331 | |
2332 | /* This should always be a toplevel function. */ | |
6e45f57b | 2333 | gcc_assert (current_function_decl == NULL_TREE); |
3d79abbd | 2334 | |
363aab21 | 2335 | gfc_save_backend_locus (&old_loc); |
3d79abbd PB |
2336 | for (el = ns->entries; el; el = el->next) |
2337 | { | |
9771b263 DN |
2338 | vec<tree, va_gc> *args = NULL; |
2339 | vec<tree, va_gc> *string_args = NULL; | |
3bb06db4 | 2340 | |
3d79abbd | 2341 | thunk_sym = el->sym; |
8b704316 | 2342 | |
fb55ca75 | 2343 | build_function_decl (thunk_sym, global); |
3d79abbd PB |
2344 | create_function_arglist (thunk_sym); |
2345 | ||
2346 | trans_function_start (thunk_sym); | |
2347 | ||
2348 | thunk_fndecl = thunk_sym->backend_decl; | |
2349 | ||
c7c79a09 | 2350 | gfc_init_block (&body); |
3d79abbd | 2351 | |
f8d0aee5 | 2352 | /* Pass extra parameter identifying this entry point. */ |
7d60be94 | 2353 | tmp = build_int_cst (gfc_array_index_type, el->id); |
9771b263 | 2354 | vec_safe_push (args, tmp); |
3d79abbd | 2355 | |
d198b59a JJ |
2356 | if (thunk_sym->attr.function) |
2357 | { | |
2358 | if (gfc_return_by_reference (ns->proc_name)) | |
2359 | { | |
2360 | tree ref = DECL_ARGUMENTS (current_function_decl); | |
9771b263 | 2361 | vec_safe_push (args, ref); |
d198b59a | 2362 | if (ns->proc_name->ts.type == BT_CHARACTER) |
9771b263 | 2363 | vec_safe_push (args, DECL_CHAIN (ref)); |
d198b59a JJ |
2364 | } |
2365 | } | |
2366 | ||
4cbc9039 JW |
2367 | for (formal = gfc_sym_get_dummy_args (ns->proc_name); formal; |
2368 | formal = formal->next) | |
3d79abbd | 2369 | { |
d198b59a JJ |
2370 | /* Ignore alternate returns. */ |
2371 | if (formal->sym == NULL) | |
2372 | continue; | |
2373 | ||
3d79abbd PB |
2374 | /* We don't have a clever way of identifying arguments, so resort to |
2375 | a brute-force search. */ | |
4cbc9039 | 2376 | for (thunk_formal = gfc_sym_get_dummy_args (thunk_sym); |
3d79abbd PB |
2377 | thunk_formal; |
2378 | thunk_formal = thunk_formal->next) | |
2379 | { | |
2380 | if (thunk_formal->sym == formal->sym) | |
2381 | break; | |
2382 | } | |
2383 | ||
2384 | if (thunk_formal) | |
2385 | { | |
2386 | /* Pass the argument. */ | |
3e978d30 | 2387 | DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1; |
9771b263 | 2388 | vec_safe_push (args, thunk_formal->sym->backend_decl); |
3d79abbd PB |
2389 | if (formal->sym->ts.type == BT_CHARACTER) |
2390 | { | |
bc21d315 | 2391 | tmp = thunk_formal->sym->ts.u.cl->backend_decl; |
9771b263 | 2392 | vec_safe_push (string_args, tmp); |
3d79abbd PB |
2393 | } |
2394 | } | |
2395 | else | |
2396 | { | |
2397 | /* Pass NULL for a missing argument. */ | |
9771b263 | 2398 | vec_safe_push (args, null_pointer_node); |
3d79abbd PB |
2399 | if (formal->sym->ts.type == BT_CHARACTER) |
2400 | { | |
c3238e32 | 2401 | tmp = build_int_cst (gfc_charlen_type_node, 0); |
9771b263 | 2402 | vec_safe_push (string_args, tmp); |
3d79abbd PB |
2403 | } |
2404 | } | |
2405 | } | |
2406 | ||
2407 | /* Call the master function. */ | |
9771b263 | 2408 | vec_safe_splice (args, string_args); |
3d79abbd | 2409 | tmp = ns->proc_name->backend_decl; |
3bb06db4 | 2410 | tmp = build_call_expr_loc_vec (input_location, tmp, args); |
d198b59a JJ |
2411 | if (ns->proc_name->attr.mixed_entry_master) |
2412 | { | |
2413 | tree union_decl, field; | |
2414 | tree master_type = TREE_TYPE (ns->proc_name->backend_decl); | |
2415 | ||
c2255bc4 AH |
2416 | union_decl = build_decl (input_location, |
2417 | VAR_DECL, get_identifier ("__result"), | |
d198b59a JJ |
2418 | TREE_TYPE (master_type)); |
2419 | DECL_ARTIFICIAL (union_decl) = 1; | |
2420 | DECL_EXTERNAL (union_decl) = 0; | |
2421 | TREE_PUBLIC (union_decl) = 0; | |
2422 | TREE_USED (union_decl) = 1; | |
2423 | layout_decl (union_decl, 0); | |
2424 | pushdecl (union_decl); | |
2425 | ||
2426 | DECL_CONTEXT (union_decl) = current_function_decl; | |
bc98ed60 TB |
2427 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
2428 | TREE_TYPE (union_decl), union_decl, tmp); | |
d198b59a JJ |
2429 | gfc_add_expr_to_block (&body, tmp); |
2430 | ||
2431 | for (field = TYPE_FIELDS (TREE_TYPE (union_decl)); | |
910ad8de | 2432 | field; field = DECL_CHAIN (field)) |
d198b59a JJ |
2433 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2434 | thunk_sym->result->name) == 0) | |
2435 | break; | |
2436 | gcc_assert (field != NULL_TREE); | |
bc98ed60 TB |
2437 | tmp = fold_build3_loc (input_location, COMPONENT_REF, |
2438 | TREE_TYPE (field), union_decl, field, | |
2439 | NULL_TREE); | |
8b704316 | 2440 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
44855d8c TS |
2441 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2442 | DECL_RESULT (current_function_decl), tmp); | |
d198b59a JJ |
2443 | tmp = build1_v (RETURN_EXPR, tmp); |
2444 | } | |
2445 | else if (TREE_TYPE (DECL_RESULT (current_function_decl)) | |
2446 | != void_type_node) | |
2447 | { | |
bc98ed60 | 2448 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
44855d8c TS |
2449 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2450 | DECL_RESULT (current_function_decl), tmp); | |
d198b59a JJ |
2451 | tmp = build1_v (RETURN_EXPR, tmp); |
2452 | } | |
3d79abbd PB |
2453 | gfc_add_expr_to_block (&body, tmp); |
2454 | ||
2455 | /* Finish off this function and send it for code generation. */ | |
2456 | DECL_SAVED_TREE (thunk_fndecl) = gfc_finish_block (&body); | |
c7c79a09 | 2457 | tmp = getdecls (); |
87a60f68 | 2458 | poplevel (1, 1); |
3d79abbd | 2459 | BLOCK_SUPERCONTEXT (DECL_INITIAL (thunk_fndecl)) = thunk_fndecl; |
c7c79a09 JJ |
2460 | DECL_SAVED_TREE (thunk_fndecl) |
2461 | = build3_v (BIND_EXPR, tmp, DECL_SAVED_TREE (thunk_fndecl), | |
2462 | DECL_INITIAL (thunk_fndecl)); | |
3d79abbd PB |
2463 | |
2464 | /* Output the GENERIC tree. */ | |
2465 | dump_function (TDI_original, thunk_fndecl); | |
2466 | ||
2467 | /* Store the end of the function, so that we get good line number | |
2468 | info for the epilogue. */ | |
2469 | cfun->function_end_locus = input_location; | |
2470 | ||
2471 | /* We're leaving the context of this function, so zap cfun. | |
2472 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
2473 | tree_rest_of_compilation. */ | |
db2960f4 | 2474 | set_cfun (NULL); |
3d79abbd PB |
2475 | |
2476 | current_function_decl = NULL_TREE; | |
2477 | ||
9618fb3c | 2478 | cgraph_finalize_function (thunk_fndecl, true); |
3d79abbd PB |
2479 | |
2480 | /* We share the symbols in the formal argument list with other entry | |
2481 | points and the master function. Clear them so that they are | |
2482 | recreated for each function. */ | |
4cbc9039 JW |
2483 | for (formal = gfc_sym_get_dummy_args (thunk_sym); formal; |
2484 | formal = formal->next) | |
d198b59a JJ |
2485 | if (formal->sym != NULL) /* Ignore alternate returns. */ |
2486 | { | |
2487 | formal->sym->backend_decl = NULL_TREE; | |
2488 | if (formal->sym->ts.type == BT_CHARACTER) | |
bc21d315 | 2489 | formal->sym->ts.u.cl->backend_decl = NULL_TREE; |
d198b59a JJ |
2490 | } |
2491 | ||
2492 | if (thunk_sym->attr.function) | |
3d79abbd | 2493 | { |
d198b59a | 2494 | if (thunk_sym->ts.type == BT_CHARACTER) |
bc21d315 | 2495 | thunk_sym->ts.u.cl->backend_decl = NULL_TREE; |
d198b59a | 2496 | if (thunk_sym->result->ts.type == BT_CHARACTER) |
bc21d315 | 2497 | thunk_sym->result->ts.u.cl->backend_decl = NULL_TREE; |
3d79abbd PB |
2498 | } |
2499 | } | |
c8cc8542 | 2500 | |
363aab21 | 2501 | gfc_restore_backend_locus (&old_loc); |
3d79abbd PB |
2502 | } |
2503 | ||
2504 | ||
2505 | /* Create a decl for a function, and create any thunks for alternate entry | |
fb55ca75 TB |
2506 | points. If global is true, generate the function in the global binding |
2507 | level, otherwise in the current binding level (which can be global). */ | |
3d79abbd PB |
2508 | |
2509 | void | |
fb55ca75 | 2510 | gfc_create_function_decl (gfc_namespace * ns, bool global) |
3d79abbd PB |
2511 | { |
2512 | /* Create a declaration for the master function. */ | |
fb55ca75 | 2513 | build_function_decl (ns->proc_name, global); |
3d79abbd | 2514 | |
f8d0aee5 | 2515 | /* Compile the entry thunks. */ |
3d79abbd | 2516 | if (ns->entries) |
fb55ca75 | 2517 | build_entry_thunks (ns, global); |
3d79abbd PB |
2518 | |
2519 | /* Now create the read argument list. */ | |
2520 | create_function_arglist (ns->proc_name); | |
2521 | } | |
2522 | ||
5f20c93a | 2523 | /* Return the decl used to hold the function return value. If |
da4c6ed8 | 2524 | parent_flag is set, the context is the parent_scope. */ |
6de9cd9a DN |
2525 | |
2526 | tree | |
5f20c93a | 2527 | gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag) |
6de9cd9a | 2528 | { |
5f20c93a PT |
2529 | tree decl; |
2530 | tree length; | |
2531 | tree this_fake_result_decl; | |
2532 | tree this_function_decl; | |
6de9cd9a DN |
2533 | |
2534 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
2535 | ||
5f20c93a PT |
2536 | if (parent_flag) |
2537 | { | |
2538 | this_fake_result_decl = parent_fake_result_decl; | |
2539 | this_function_decl = DECL_CONTEXT (current_function_decl); | |
2540 | } | |
2541 | else | |
2542 | { | |
2543 | this_fake_result_decl = current_fake_result_decl; | |
2544 | this_function_decl = current_function_decl; | |
2545 | } | |
2546 | ||
d198b59a | 2547 | if (sym |
5f20c93a | 2548 | && sym->ns->proc_name->backend_decl == this_function_decl |
417ab240 | 2549 | && sym->ns->proc_name->attr.entry_master |
d198b59a JJ |
2550 | && sym != sym->ns->proc_name) |
2551 | { | |
417ab240 | 2552 | tree t = NULL, var; |
5f20c93a PT |
2553 | if (this_fake_result_decl != NULL) |
2554 | for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t)) | |
417ab240 JJ |
2555 | if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0) |
2556 | break; | |
2557 | if (t) | |
2558 | return TREE_VALUE (t); | |
5f20c93a PT |
2559 | decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag); |
2560 | ||
2561 | if (parent_flag) | |
2562 | this_fake_result_decl = parent_fake_result_decl; | |
2563 | else | |
2564 | this_fake_result_decl = current_fake_result_decl; | |
2565 | ||
417ab240 | 2566 | if (decl && sym->ns->proc_name->attr.mixed_entry_master) |
d198b59a JJ |
2567 | { |
2568 | tree field; | |
2569 | ||
2570 | for (field = TYPE_FIELDS (TREE_TYPE (decl)); | |
910ad8de | 2571 | field; field = DECL_CHAIN (field)) |
d198b59a JJ |
2572 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2573 | sym->name) == 0) | |
2574 | break; | |
2575 | ||
2576 | gcc_assert (field != NULL_TREE); | |
bc98ed60 TB |
2577 | decl = fold_build3_loc (input_location, COMPONENT_REF, |
2578 | TREE_TYPE (field), decl, field, NULL_TREE); | |
d198b59a | 2579 | } |
5f20c93a PT |
2580 | |
2581 | var = create_tmp_var_raw (TREE_TYPE (decl), sym->name); | |
2582 | if (parent_flag) | |
2583 | gfc_add_decl_to_parent_function (var); | |
2584 | else | |
2585 | gfc_add_decl_to_function (var); | |
2586 | ||
417ab240 JJ |
2587 | SET_DECL_VALUE_EXPR (var, decl); |
2588 | DECL_HAS_VALUE_EXPR_P (var) = 1; | |
4b8ae4db | 2589 | GFC_DECL_RESULT (var) = 1; |
5f20c93a PT |
2590 | |
2591 | TREE_CHAIN (this_fake_result_decl) | |
2592 | = tree_cons (get_identifier (sym->name), var, | |
2593 | TREE_CHAIN (this_fake_result_decl)); | |
417ab240 | 2594 | return var; |
d198b59a JJ |
2595 | } |
2596 | ||
5f20c93a PT |
2597 | if (this_fake_result_decl != NULL_TREE) |
2598 | return TREE_VALUE (this_fake_result_decl); | |
6de9cd9a DN |
2599 | |
2600 | /* Only when gfc_get_fake_result_decl is called by gfc_trans_return, | |
2601 | sym is NULL. */ | |
2602 | if (!sym) | |
2603 | return NULL_TREE; | |
2604 | ||
417ab240 | 2605 | if (sym->ts.type == BT_CHARACTER) |
6de9cd9a | 2606 | { |
bc21d315 | 2607 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
417ab240 JJ |
2608 | length = gfc_create_string_length (sym); |
2609 | else | |
bc21d315 | 2610 | length = sym->ts.u.cl->backend_decl; |
417ab240 JJ |
2611 | if (TREE_CODE (length) == VAR_DECL |
2612 | && DECL_CONTEXT (length) == NULL_TREE) | |
a7d6b765 | 2613 | gfc_add_decl_to_function (length); |
6de9cd9a DN |
2614 | } |
2615 | ||
2616 | if (gfc_return_by_reference (sym)) | |
2617 | { | |
5f20c93a | 2618 | decl = DECL_ARGUMENTS (this_function_decl); |
d198b59a | 2619 | |
5f20c93a | 2620 | if (sym->ns->proc_name->backend_decl == this_function_decl |
d198b59a | 2621 | && sym->ns->proc_name->attr.entry_master) |
910ad8de | 2622 | decl = DECL_CHAIN (decl); |
6de9cd9a DN |
2623 | |
2624 | TREE_USED (decl) = 1; | |
2625 | if (sym->as) | |
2626 | decl = gfc_build_dummy_array_decl (sym, decl); | |
2627 | } | |
2628 | else | |
2629 | { | |
2630 | sprintf (name, "__result_%.20s", | |
5f20c93a | 2631 | IDENTIFIER_POINTER (DECL_NAME (this_function_decl))); |
6de9cd9a | 2632 | |
da4c6ed8 | 2633 | if (!sym->attr.mixed_entry_master && sym->attr.function) |
88e09c79 | 2634 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
c2255bc4 | 2635 | VAR_DECL, get_identifier (name), |
da4c6ed8 TS |
2636 | gfc_sym_type (sym)); |
2637 | else | |
88e09c79 | 2638 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
c2255bc4 | 2639 | VAR_DECL, get_identifier (name), |
da4c6ed8 | 2640 | TREE_TYPE (TREE_TYPE (this_function_decl))); |
6de9cd9a DN |
2641 | DECL_ARTIFICIAL (decl) = 1; |
2642 | DECL_EXTERNAL (decl) = 0; | |
2643 | TREE_PUBLIC (decl) = 0; | |
2644 | TREE_USED (decl) = 1; | |
6c7a4dfd | 2645 | GFC_DECL_RESULT (decl) = 1; |
c55cebda | 2646 | TREE_ADDRESSABLE (decl) = 1; |
6de9cd9a DN |
2647 | |
2648 | layout_decl (decl, 0); | |
2649 | ||
5f20c93a PT |
2650 | if (parent_flag) |
2651 | gfc_add_decl_to_parent_function (decl); | |
2652 | else | |
2653 | gfc_add_decl_to_function (decl); | |
6de9cd9a DN |
2654 | } |
2655 | ||
5f20c93a PT |
2656 | if (parent_flag) |
2657 | parent_fake_result_decl = build_tree_list (NULL, decl); | |
2658 | else | |
2659 | current_fake_result_decl = build_tree_list (NULL, decl); | |
6de9cd9a DN |
2660 | |
2661 | return decl; | |
2662 | } | |
2663 | ||
2664 | ||
2665 | /* Builds a function decl. The remaining parameters are the types of the | |
2666 | function arguments. Negative nargs indicates a varargs function. */ | |
2667 | ||
0b7b376d RG |
2668 | static tree |
2669 | build_library_function_decl_1 (tree name, const char *spec, | |
2670 | tree rettype, int nargs, va_list p) | |
6de9cd9a | 2671 | { |
9771b263 | 2672 | vec<tree, va_gc> *arglist; |
6de9cd9a DN |
2673 | tree fntype; |
2674 | tree fndecl; | |
6de9cd9a DN |
2675 | int n; |
2676 | ||
2677 | /* Library functions must be declared with global scope. */ | |
6e45f57b | 2678 | gcc_assert (current_function_decl == NULL_TREE); |
6de9cd9a | 2679 | |
6de9cd9a | 2680 | /* Create a list of the argument types. */ |
9771b263 | 2681 | vec_alloc (arglist, abs (nargs)); |
6c32445b | 2682 | for (n = abs (nargs); n > 0; n--) |
6de9cd9a | 2683 | { |
6c32445b | 2684 | tree argtype = va_arg (p, tree); |
9771b263 | 2685 | arglist->quick_push (argtype); |
6de9cd9a DN |
2686 | } |
2687 | ||
2688 | /* Build the function type and decl. */ | |
6c32445b NF |
2689 | if (nargs >= 0) |
2690 | fntype = build_function_type_vec (rettype, arglist); | |
2691 | else | |
2692 | fntype = build_varargs_function_type_vec (rettype, arglist); | |
0b7b376d RG |
2693 | if (spec) |
2694 | { | |
2695 | tree attr_args = build_tree_list (NULL_TREE, | |
2696 | build_string (strlen (spec), spec)); | |
2697 | tree attrs = tree_cons (get_identifier ("fn spec"), | |
2698 | attr_args, TYPE_ATTRIBUTES (fntype)); | |
2699 | fntype = build_type_attribute_variant (fntype, attrs); | |
2700 | } | |
c2255bc4 AH |
2701 | fndecl = build_decl (input_location, |
2702 | FUNCTION_DECL, name, fntype); | |
6de9cd9a DN |
2703 | |
2704 | /* Mark this decl as external. */ | |
2705 | DECL_EXTERNAL (fndecl) = 1; | |
2706 | TREE_PUBLIC (fndecl) = 1; | |
2707 | ||
6de9cd9a DN |
2708 | pushdecl (fndecl); |
2709 | ||
0e6df31e | 2710 | rest_of_decl_compilation (fndecl, 1, 0); |
6de9cd9a DN |
2711 | |
2712 | return fndecl; | |
2713 | } | |
2714 | ||
0b7b376d RG |
2715 | /* Builds a function decl. The remaining parameters are the types of the |
2716 | function arguments. Negative nargs indicates a varargs function. */ | |
2717 | ||
2718 | tree | |
2719 | gfc_build_library_function_decl (tree name, tree rettype, int nargs, ...) | |
2720 | { | |
2721 | tree ret; | |
2722 | va_list args; | |
2723 | va_start (args, nargs); | |
2724 | ret = build_library_function_decl_1 (name, NULL, rettype, nargs, args); | |
2725 | va_end (args); | |
2726 | return ret; | |
2727 | } | |
2728 | ||
2729 | /* Builds a function decl. The remaining parameters are the types of the | |
2730 | function arguments. Negative nargs indicates a varargs function. | |
2731 | The SPEC parameter specifies the function argument and return type | |
2732 | specification according to the fnspec function type attribute. */ | |
2733 | ||
3f34855a | 2734 | tree |
0b7b376d RG |
2735 | gfc_build_library_function_decl_with_spec (tree name, const char *spec, |
2736 | tree rettype, int nargs, ...) | |
2737 | { | |
2738 | tree ret; | |
2739 | va_list args; | |
2740 | va_start (args, nargs); | |
2741 | ret = build_library_function_decl_1 (name, spec, rettype, nargs, args); | |
2742 | va_end (args); | |
2743 | return ret; | |
2744 | } | |
2745 | ||
6de9cd9a DN |
2746 | static void |
2747 | gfc_build_intrinsic_function_decls (void) | |
2748 | { | |
e2cad04b RH |
2749 | tree gfc_int4_type_node = gfc_get_int_type (4); |
2750 | tree gfc_int8_type_node = gfc_get_int_type (8); | |
644cb69f | 2751 | tree gfc_int16_type_node = gfc_get_int_type (16); |
e2cad04b | 2752 | tree gfc_logical4_type_node = gfc_get_logical_type (4); |
374929b2 FXC |
2753 | tree pchar1_type_node = gfc_get_pchar_type (1); |
2754 | tree pchar4_type_node = gfc_get_pchar_type (4); | |
e2cad04b | 2755 | |
6de9cd9a | 2756 | /* String functions. */ |
6368f166 DF |
2757 | gfor_fndecl_compare_string = gfc_build_library_function_decl_with_spec ( |
2758 | get_identifier (PREFIX("compare_string")), "..R.R", | |
2759 | integer_type_node, 4, gfc_charlen_type_node, pchar1_type_node, | |
2760 | gfc_charlen_type_node, pchar1_type_node); | |
4ca4be7f | 2761 | DECL_PURE_P (gfor_fndecl_compare_string) = 1; |
22b139e1 | 2762 | TREE_NOTHROW (gfor_fndecl_compare_string) = 1; |
6368f166 DF |
2763 | |
2764 | gfor_fndecl_concat_string = gfc_build_library_function_decl_with_spec ( | |
2765 | get_identifier (PREFIX("concat_string")), "..W.R.R", | |
2766 | void_type_node, 6, gfc_charlen_type_node, pchar1_type_node, | |
2767 | gfc_charlen_type_node, pchar1_type_node, | |
2768 | gfc_charlen_type_node, pchar1_type_node); | |
22b139e1 | 2769 | TREE_NOTHROW (gfor_fndecl_concat_string) = 1; |
6368f166 DF |
2770 | |
2771 | gfor_fndecl_string_len_trim = gfc_build_library_function_decl_with_spec ( | |
2772 | get_identifier (PREFIX("string_len_trim")), "..R", | |
2773 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar1_type_node); | |
4ca4be7f | 2774 | DECL_PURE_P (gfor_fndecl_string_len_trim) = 1; |
22b139e1 | 2775 | TREE_NOTHROW (gfor_fndecl_string_len_trim) = 1; |
6368f166 DF |
2776 | |
2777 | gfor_fndecl_string_index = gfc_build_library_function_decl_with_spec ( | |
2778 | get_identifier (PREFIX("string_index")), "..R.R.", | |
2779 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2780 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2781 | DECL_PURE_P (gfor_fndecl_string_index) = 1; |
22b139e1 | 2782 | TREE_NOTHROW (gfor_fndecl_string_index) = 1; |
6368f166 DF |
2783 | |
2784 | gfor_fndecl_string_scan = gfc_build_library_function_decl_with_spec ( | |
2785 | get_identifier (PREFIX("string_scan")), "..R.R.", | |
2786 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2787 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2788 | DECL_PURE_P (gfor_fndecl_string_scan) = 1; |
22b139e1 | 2789 | TREE_NOTHROW (gfor_fndecl_string_scan) = 1; |
6368f166 DF |
2790 | |
2791 | gfor_fndecl_string_verify = gfc_build_library_function_decl_with_spec ( | |
2792 | get_identifier (PREFIX("string_verify")), "..R.R.", | |
2793 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2794 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2795 | DECL_PURE_P (gfor_fndecl_string_verify) = 1; |
22b139e1 | 2796 | TREE_NOTHROW (gfor_fndecl_string_verify) = 1; |
6368f166 DF |
2797 | |
2798 | gfor_fndecl_string_trim = gfc_build_library_function_decl_with_spec ( | |
2799 | get_identifier (PREFIX("string_trim")), ".Ww.R", | |
2800 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2801 | build_pointer_type (pchar1_type_node), gfc_charlen_type_node, | |
2802 | pchar1_type_node); | |
2803 | ||
2804 | gfor_fndecl_string_minmax = gfc_build_library_function_decl_with_spec ( | |
2805 | get_identifier (PREFIX("string_minmax")), ".Ww.R", | |
2806 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2807 | build_pointer_type (pchar1_type_node), integer_type_node, | |
2808 | integer_type_node); | |
2809 | ||
2810 | gfor_fndecl_adjustl = gfc_build_library_function_decl_with_spec ( | |
2811 | get_identifier (PREFIX("adjustl")), ".W.R", | |
2812 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2813 | pchar1_type_node); | |
22b139e1 | 2814 | TREE_NOTHROW (gfor_fndecl_adjustl) = 1; |
6368f166 DF |
2815 | |
2816 | gfor_fndecl_adjustr = gfc_build_library_function_decl_with_spec ( | |
2817 | get_identifier (PREFIX("adjustr")), ".W.R", | |
2818 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2819 | pchar1_type_node); | |
22b139e1 | 2820 | TREE_NOTHROW (gfor_fndecl_adjustr) = 1; |
6368f166 DF |
2821 | |
2822 | gfor_fndecl_select_string = gfc_build_library_function_decl_with_spec ( | |
2823 | get_identifier (PREFIX("select_string")), ".R.R.", | |
2824 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2825 | pchar1_type_node, gfc_charlen_type_node); | |
4ca4be7f | 2826 | DECL_PURE_P (gfor_fndecl_select_string) = 1; |
22b139e1 | 2827 | TREE_NOTHROW (gfor_fndecl_select_string) = 1; |
6368f166 DF |
2828 | |
2829 | gfor_fndecl_compare_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2830 | get_identifier (PREFIX("compare_string_char4")), "..R.R", | |
2831 | integer_type_node, 4, gfc_charlen_type_node, pchar4_type_node, | |
2832 | gfc_charlen_type_node, pchar4_type_node); | |
4ca4be7f | 2833 | DECL_PURE_P (gfor_fndecl_compare_string_char4) = 1; |
22b139e1 | 2834 | TREE_NOTHROW (gfor_fndecl_compare_string_char4) = 1; |
6368f166 DF |
2835 | |
2836 | gfor_fndecl_concat_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2837 | get_identifier (PREFIX("concat_string_char4")), "..W.R.R", | |
2838 | void_type_node, 6, gfc_charlen_type_node, pchar4_type_node, | |
2839 | gfc_charlen_type_node, pchar4_type_node, gfc_charlen_type_node, | |
2840 | pchar4_type_node); | |
22b139e1 | 2841 | TREE_NOTHROW (gfor_fndecl_concat_string_char4) = 1; |
6368f166 DF |
2842 | |
2843 | gfor_fndecl_string_len_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2844 | get_identifier (PREFIX("string_len_trim_char4")), "..R", | |
2845 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar4_type_node); | |
4ca4be7f | 2846 | DECL_PURE_P (gfor_fndecl_string_len_trim_char4) = 1; |
22b139e1 | 2847 | TREE_NOTHROW (gfor_fndecl_string_len_trim_char4) = 1; |
6368f166 DF |
2848 | |
2849 | gfor_fndecl_string_index_char4 = gfc_build_library_function_decl_with_spec ( | |
2850 | get_identifier (PREFIX("string_index_char4")), "..R.R.", | |
2851 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2852 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2853 | DECL_PURE_P (gfor_fndecl_string_index_char4) = 1; |
22b139e1 | 2854 | TREE_NOTHROW (gfor_fndecl_string_index_char4) = 1; |
6368f166 DF |
2855 | |
2856 | gfor_fndecl_string_scan_char4 = gfc_build_library_function_decl_with_spec ( | |
2857 | get_identifier (PREFIX("string_scan_char4")), "..R.R.", | |
2858 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2859 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2860 | DECL_PURE_P (gfor_fndecl_string_scan_char4) = 1; |
22b139e1 | 2861 | TREE_NOTHROW (gfor_fndecl_string_scan_char4) = 1; |
6368f166 DF |
2862 | |
2863 | gfor_fndecl_string_verify_char4 = gfc_build_library_function_decl_with_spec ( | |
2864 | get_identifier (PREFIX("string_verify_char4")), "..R.R.", | |
2865 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2866 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2867 | DECL_PURE_P (gfor_fndecl_string_verify_char4) = 1; |
22b139e1 | 2868 | TREE_NOTHROW (gfor_fndecl_string_verify_char4) = 1; |
6368f166 DF |
2869 | |
2870 | gfor_fndecl_string_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2871 | get_identifier (PREFIX("string_trim_char4")), ".Ww.R", | |
2872 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2873 | build_pointer_type (pchar4_type_node), gfc_charlen_type_node, | |
2874 | pchar4_type_node); | |
2875 | ||
2876 | gfor_fndecl_string_minmax_char4 = gfc_build_library_function_decl_with_spec ( | |
2877 | get_identifier (PREFIX("string_minmax_char4")), ".Ww.R", | |
2878 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2879 | build_pointer_type (pchar4_type_node), integer_type_node, | |
2880 | integer_type_node); | |
2881 | ||
2882 | gfor_fndecl_adjustl_char4 = gfc_build_library_function_decl_with_spec ( | |
2883 | get_identifier (PREFIX("adjustl_char4")), ".W.R", | |
2884 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2885 | pchar4_type_node); | |
22b139e1 | 2886 | TREE_NOTHROW (gfor_fndecl_adjustl_char4) = 1; |
6368f166 DF |
2887 | |
2888 | gfor_fndecl_adjustr_char4 = gfc_build_library_function_decl_with_spec ( | |
2889 | get_identifier (PREFIX("adjustr_char4")), ".W.R", | |
2890 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2891 | pchar4_type_node); | |
22b139e1 | 2892 | TREE_NOTHROW (gfor_fndecl_adjustr_char4) = 1; |
6368f166 DF |
2893 | |
2894 | gfor_fndecl_select_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2895 | get_identifier (PREFIX("select_string_char4")), ".R.R.", | |
2896 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2897 | pvoid_type_node, gfc_charlen_type_node); | |
4ca4be7f | 2898 | DECL_PURE_P (gfor_fndecl_select_string_char4) = 1; |
22b139e1 | 2899 | TREE_NOTHROW (gfor_fndecl_select_string_char4) = 1; |
d393bbd7 FXC |
2900 | |
2901 | ||
2902 | /* Conversion between character kinds. */ | |
2903 | ||
6368f166 DF |
2904 | gfor_fndecl_convert_char1_to_char4 = gfc_build_library_function_decl_with_spec ( |
2905 | get_identifier (PREFIX("convert_char1_to_char4")), ".w.R", | |
2906 | void_type_node, 3, build_pointer_type (pchar4_type_node), | |
2907 | gfc_charlen_type_node, pchar1_type_node); | |
d393bbd7 | 2908 | |
6368f166 DF |
2909 | gfor_fndecl_convert_char4_to_char1 = gfc_build_library_function_decl_with_spec ( |
2910 | get_identifier (PREFIX("convert_char4_to_char1")), ".w.R", | |
2911 | void_type_node, 3, build_pointer_type (pchar1_type_node), | |
2912 | gfc_charlen_type_node, pchar4_type_node); | |
d393bbd7 | 2913 | |
374929b2 | 2914 | /* Misc. functions. */ |
2263c775 | 2915 | |
6368f166 DF |
2916 | gfor_fndecl_ttynam = gfc_build_library_function_decl_with_spec ( |
2917 | get_identifier (PREFIX("ttynam")), ".W", | |
2918 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
2919 | integer_type_node); | |
2920 | ||
2921 | gfor_fndecl_fdate = gfc_build_library_function_decl_with_spec ( | |
2922 | get_identifier (PREFIX("fdate")), ".W", | |
2923 | void_type_node, 2, pchar_type_node, gfc_charlen_type_node); | |
2924 | ||
2925 | gfor_fndecl_ctime = gfc_build_library_function_decl_with_spec ( | |
2926 | get_identifier (PREFIX("ctime")), ".W", | |
2927 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
2928 | gfc_int8_type_node); | |
2929 | ||
2930 | gfor_fndecl_sc_kind = gfc_build_library_function_decl_with_spec ( | |
2931 | get_identifier (PREFIX("selected_char_kind")), "..R", | |
2932 | gfc_int4_type_node, 2, gfc_charlen_type_node, pchar_type_node); | |
4ca4be7f | 2933 | DECL_PURE_P (gfor_fndecl_sc_kind) = 1; |
22b139e1 | 2934 | TREE_NOTHROW (gfor_fndecl_sc_kind) = 1; |
6368f166 DF |
2935 | |
2936 | gfor_fndecl_si_kind = gfc_build_library_function_decl_with_spec ( | |
2937 | get_identifier (PREFIX("selected_int_kind")), ".R", | |
2938 | gfc_int4_type_node, 1, pvoid_type_node); | |
4ca4be7f | 2939 | DECL_PURE_P (gfor_fndecl_si_kind) = 1; |
22b139e1 | 2940 | TREE_NOTHROW (gfor_fndecl_si_kind) = 1; |
6368f166 DF |
2941 | |
2942 | gfor_fndecl_sr_kind = gfc_build_library_function_decl_with_spec ( | |
2943 | get_identifier (PREFIX("selected_real_kind2008")), ".RR", | |
2944 | gfc_int4_type_node, 3, pvoid_type_node, pvoid_type_node, | |
2945 | pvoid_type_node); | |
4ca4be7f | 2946 | DECL_PURE_P (gfor_fndecl_sr_kind) = 1; |
22b139e1 | 2947 | TREE_NOTHROW (gfor_fndecl_sr_kind) = 1; |
6de9cd9a | 2948 | |
6de9cd9a | 2949 | /* Power functions. */ |
5b200ac2 | 2950 | { |
644cb69f FXC |
2951 | tree ctype, rtype, itype, jtype; |
2952 | int rkind, ikind, jkind; | |
2953 | #define NIKINDS 3 | |
2954 | #define NRKINDS 4 | |
2955 | static int ikinds[NIKINDS] = {4, 8, 16}; | |
2956 | static int rkinds[NRKINDS] = {4, 8, 10, 16}; | |
2957 | char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */ | |
2958 | ||
2959 | for (ikind=0; ikind < NIKINDS; ikind++) | |
5b200ac2 | 2960 | { |
644cb69f FXC |
2961 | itype = gfc_get_int_type (ikinds[ikind]); |
2962 | ||
2963 | for (jkind=0; jkind < NIKINDS; jkind++) | |
2964 | { | |
2965 | jtype = gfc_get_int_type (ikinds[jkind]); | |
2966 | if (itype && jtype) | |
2967 | { | |
2968 | sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind], | |
2969 | ikinds[jkind]); | |
2970 | gfor_fndecl_math_powi[jkind][ikind].integer = | |
2971 | gfc_build_library_function_decl (get_identifier (name), | |
2972 | jtype, 2, jtype, itype); | |
67fdae36 | 2973 | TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
22b139e1 | 2974 | TREE_NOTHROW (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
644cb69f FXC |
2975 | } |
2976 | } | |
2977 | ||
2978 | for (rkind = 0; rkind < NRKINDS; rkind ++) | |
5b200ac2 | 2979 | { |
644cb69f FXC |
2980 | rtype = gfc_get_real_type (rkinds[rkind]); |
2981 | if (rtype && itype) | |
2982 | { | |
2983 | sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind], | |
2984 | ikinds[ikind]); | |
2985 | gfor_fndecl_math_powi[rkind][ikind].real = | |
2986 | gfc_build_library_function_decl (get_identifier (name), | |
2987 | rtype, 2, rtype, itype); | |
67fdae36 | 2988 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
22b139e1 | 2989 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
644cb69f FXC |
2990 | } |
2991 | ||
2992 | ctype = gfc_get_complex_type (rkinds[rkind]); | |
2993 | if (ctype && itype) | |
2994 | { | |
2995 | sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind], | |
2996 | ikinds[ikind]); | |
2997 | gfor_fndecl_math_powi[rkind][ikind].cmplx = | |
2998 | gfc_build_library_function_decl (get_identifier (name), | |
2999 | ctype, 2,ctype, itype); | |
67fdae36 | 3000 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
22b139e1 | 3001 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
644cb69f | 3002 | } |
5b200ac2 FW |
3003 | } |
3004 | } | |
644cb69f FXC |
3005 | #undef NIKINDS |
3006 | #undef NRKINDS | |
5b200ac2 FW |
3007 | } |
3008 | ||
6368f166 DF |
3009 | gfor_fndecl_math_ishftc4 = gfc_build_library_function_decl ( |
3010 | get_identifier (PREFIX("ishftc4")), | |
3011 | gfc_int4_type_node, 3, gfc_int4_type_node, gfc_int4_type_node, | |
3012 | gfc_int4_type_node); | |
22b139e1 JJ |
3013 | TREE_READONLY (gfor_fndecl_math_ishftc4) = 1; |
3014 | TREE_NOTHROW (gfor_fndecl_math_ishftc4) = 1; | |
8b704316 | 3015 | |
6368f166 DF |
3016 | gfor_fndecl_math_ishftc8 = gfc_build_library_function_decl ( |
3017 | get_identifier (PREFIX("ishftc8")), | |
3018 | gfc_int8_type_node, 3, gfc_int8_type_node, gfc_int4_type_node, | |
3019 | gfc_int4_type_node); | |
22b139e1 JJ |
3020 | TREE_READONLY (gfor_fndecl_math_ishftc8) = 1; |
3021 | TREE_NOTHROW (gfor_fndecl_math_ishftc8) = 1; | |
6368f166 | 3022 | |
644cb69f | 3023 | if (gfc_int16_type_node) |
22b139e1 JJ |
3024 | { |
3025 | gfor_fndecl_math_ishftc16 = gfc_build_library_function_decl ( | |
6368f166 DF |
3026 | get_identifier (PREFIX("ishftc16")), |
3027 | gfc_int16_type_node, 3, gfc_int16_type_node, gfc_int4_type_node, | |
3028 | gfc_int4_type_node); | |
22b139e1 JJ |
3029 | TREE_READONLY (gfor_fndecl_math_ishftc16) = 1; |
3030 | TREE_NOTHROW (gfor_fndecl_math_ishftc16) = 1; | |
3031 | } | |
644cb69f | 3032 | |
5a0aad31 FXC |
3033 | /* BLAS functions. */ |
3034 | { | |
dd52ecb0 | 3035 | tree pint = build_pointer_type (integer_type_node); |
5a0aad31 FXC |
3036 | tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind)); |
3037 | tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind)); | |
3038 | tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind)); | |
3039 | tree pz = build_pointer_type | |
3040 | (gfc_get_complex_type (gfc_default_double_kind)); | |
3041 | ||
3042 | gfor_fndecl_sgemm = gfc_build_library_function_decl | |
3043 | (get_identifier | |
3044 | (gfc_option.flag_underscoring ? "sgemm_" | |
3045 | : "sgemm"), | |
3046 | void_type_node, 15, pchar_type_node, | |
3047 | pchar_type_node, pint, pint, pint, ps, ps, pint, | |
dd52ecb0 JB |
3048 | ps, pint, ps, ps, pint, integer_type_node, |
3049 | integer_type_node); | |
5a0aad31 FXC |
3050 | gfor_fndecl_dgemm = gfc_build_library_function_decl |
3051 | (get_identifier | |
3052 | (gfc_option.flag_underscoring ? "dgemm_" | |
3053 | : "dgemm"), | |
3054 | void_type_node, 15, pchar_type_node, | |
3055 | pchar_type_node, pint, pint, pint, pd, pd, pint, | |
dd52ecb0 JB |
3056 | pd, pint, pd, pd, pint, integer_type_node, |
3057 | integer_type_node); | |
5a0aad31 FXC |
3058 | gfor_fndecl_cgemm = gfc_build_library_function_decl |
3059 | (get_identifier | |
3060 | (gfc_option.flag_underscoring ? "cgemm_" | |
3061 | : "cgemm"), | |
3062 | void_type_node, 15, pchar_type_node, | |
3063 | pchar_type_node, pint, pint, pint, pc, pc, pint, | |
dd52ecb0 JB |
3064 | pc, pint, pc, pc, pint, integer_type_node, |
3065 | integer_type_node); | |
5a0aad31 FXC |
3066 | gfor_fndecl_zgemm = gfc_build_library_function_decl |
3067 | (get_identifier | |
3068 | (gfc_option.flag_underscoring ? "zgemm_" | |
3069 | : "zgemm"), | |
3070 | void_type_node, 15, pchar_type_node, | |
3071 | pchar_type_node, pint, pint, pint, pz, pz, pint, | |
dd52ecb0 JB |
3072 | pz, pint, pz, pz, pint, integer_type_node, |
3073 | integer_type_node); | |
5a0aad31 FXC |
3074 | } |
3075 | ||
6de9cd9a | 3076 | /* Other functions. */ |
6368f166 DF |
3077 | gfor_fndecl_size0 = gfc_build_library_function_decl_with_spec ( |
3078 | get_identifier (PREFIX("size0")), ".R", | |
3079 | gfc_array_index_type, 1, pvoid_type_node); | |
4ca4be7f | 3080 | DECL_PURE_P (gfor_fndecl_size0) = 1; |
22b139e1 | 3081 | TREE_NOTHROW (gfor_fndecl_size0) = 1; |
6368f166 DF |
3082 | |
3083 | gfor_fndecl_size1 = gfc_build_library_function_decl_with_spec ( | |
3084 | get_identifier (PREFIX("size1")), ".R", | |
3085 | gfc_array_index_type, 2, pvoid_type_node, gfc_array_index_type); | |
4ca4be7f | 3086 | DECL_PURE_P (gfor_fndecl_size1) = 1; |
22b139e1 | 3087 | TREE_NOTHROW (gfor_fndecl_size1) = 1; |
6368f166 DF |
3088 | |
3089 | gfor_fndecl_iargc = gfc_build_library_function_decl ( | |
3090 | get_identifier (PREFIX ("iargc")), gfc_int4_type_node, 0); | |
22b139e1 | 3091 | TREE_NOTHROW (gfor_fndecl_iargc) = 1; |
6de9cd9a DN |
3092 | } |
3093 | ||
3094 | ||
3095 | /* Make prototypes for runtime library functions. */ | |
3096 | ||
3097 | void | |
3098 | gfc_build_builtin_function_decls (void) | |
3099 | { | |
e2cad04b | 3100 | tree gfc_int4_type_node = gfc_get_int_type (4); |
6de9cd9a | 3101 | |
6368f166 DF |
3102 | gfor_fndecl_stop_numeric = gfc_build_library_function_decl ( |
3103 | get_identifier (PREFIX("stop_numeric")), | |
3104 | void_type_node, 1, gfc_int4_type_node); | |
6d1b0f92 | 3105 | /* STOP doesn't return. */ |
eed61baa TK |
3106 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1; |
3107 | ||
cea59ace JD |
3108 | gfor_fndecl_stop_numeric_f08 = gfc_build_library_function_decl ( |
3109 | get_identifier (PREFIX("stop_numeric_f08")), | |
3110 | void_type_node, 1, gfc_int4_type_node); | |
3111 | /* STOP doesn't return. */ | |
3112 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric_f08) = 1; | |
3113 | ||
6368f166 DF |
3114 | gfor_fndecl_stop_string = gfc_build_library_function_decl_with_spec ( |
3115 | get_identifier (PREFIX("stop_string")), ".R.", | |
3116 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
6d1b0f92 | 3117 | /* STOP doesn't return. */ |
6368f166 | 3118 | TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1; |
4ca4be7f | 3119 | |
6368f166 DF |
3120 | gfor_fndecl_error_stop_numeric = gfc_build_library_function_decl ( |
3121 | get_identifier (PREFIX("error_stop_numeric")), | |
3122 | void_type_node, 1, gfc_int4_type_node); | |
6d1b0f92 JD |
3123 | /* ERROR STOP doesn't return. */ |
3124 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_numeric) = 1; | |
3125 | ||
6368f166 DF |
3126 | gfor_fndecl_error_stop_string = gfc_build_library_function_decl_with_spec ( |
3127 | get_identifier (PREFIX("error_stop_string")), ".R.", | |
3128 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
d0a4a61c TB |
3129 | /* ERROR STOP doesn't return. */ |
3130 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_string) = 1; | |
3131 | ||
6368f166 DF |
3132 | gfor_fndecl_pause_numeric = gfc_build_library_function_decl ( |
3133 | get_identifier (PREFIX("pause_numeric")), | |
3134 | void_type_node, 1, gfc_int4_type_node); | |
6d1b0f92 | 3135 | |
6368f166 DF |
3136 | gfor_fndecl_pause_string = gfc_build_library_function_decl_with_spec ( |
3137 | get_identifier (PREFIX("pause_string")), ".R.", | |
3138 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
6de9cd9a | 3139 | |
6368f166 DF |
3140 | gfor_fndecl_runtime_error = gfc_build_library_function_decl_with_spec ( |
3141 | get_identifier (PREFIX("runtime_error")), ".R", | |
3142 | void_type_node, -1, pchar_type_node); | |
16275f18 SB |
3143 | /* The runtime_error function does not return. */ |
3144 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1; | |
6de9cd9a | 3145 | |
6368f166 DF |
3146 | gfor_fndecl_runtime_error_at = gfc_build_library_function_decl_with_spec ( |
3147 | get_identifier (PREFIX("runtime_error_at")), ".RR", | |
3148 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
f96d606f JD |
3149 | /* The runtime_error_at function does not return. */ |
3150 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1; | |
8b704316 | 3151 | |
6368f166 DF |
3152 | gfor_fndecl_runtime_warning_at = gfc_build_library_function_decl_with_spec ( |
3153 | get_identifier (PREFIX("runtime_warning_at")), ".RR", | |
3154 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
3155 | ||
3156 | gfor_fndecl_generate_error = gfc_build_library_function_decl_with_spec ( | |
3157 | get_identifier (PREFIX("generate_error")), ".R.R", | |
3158 | void_type_node, 3, pvoid_type_node, integer_type_node, | |
3159 | pchar_type_node); | |
3160 | ||
3161 | gfor_fndecl_os_error = gfc_build_library_function_decl_with_spec ( | |
3162 | get_identifier (PREFIX("os_error")), ".R", | |
3163 | void_type_node, 1, pchar_type_node); | |
1529b8d9 FXC |
3164 | /* The runtime_error function does not return. */ |
3165 | TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1; | |
3166 | ||
6368f166 DF |
3167 | gfor_fndecl_set_args = gfc_build_library_function_decl ( |
3168 | get_identifier (PREFIX("set_args")), | |
3169 | void_type_node, 2, integer_type_node, | |
3170 | build_pointer_type (pchar_type_node)); | |
092231a8 | 3171 | |
6368f166 DF |
3172 | gfor_fndecl_set_fpe = gfc_build_library_function_decl ( |
3173 | get_identifier (PREFIX("set_fpe")), | |
3174 | void_type_node, 1, integer_type_node); | |
944b8b35 | 3175 | |
68d2e027 | 3176 | /* Keep the array dimension in sync with the call, later in this file. */ |
6368f166 DF |
3177 | gfor_fndecl_set_options = gfc_build_library_function_decl_with_spec ( |
3178 | get_identifier (PREFIX("set_options")), "..R", | |
3179 | void_type_node, 2, integer_type_node, | |
3180 | build_pointer_type (integer_type_node)); | |
8b67b708 | 3181 | |
6368f166 DF |
3182 | gfor_fndecl_set_convert = gfc_build_library_function_decl ( |
3183 | get_identifier (PREFIX("set_convert")), | |
3184 | void_type_node, 1, integer_type_node); | |
eaa90d25 | 3185 | |
6368f166 DF |
3186 | gfor_fndecl_set_record_marker = gfc_build_library_function_decl ( |
3187 | get_identifier (PREFIX("set_record_marker")), | |
3188 | void_type_node, 1, integer_type_node); | |
d67ab5ee | 3189 | |
6368f166 DF |
3190 | gfor_fndecl_set_max_subrecord_length = gfc_build_library_function_decl ( |
3191 | get_identifier (PREFIX("set_max_subrecord_length")), | |
3192 | void_type_node, 1, integer_type_node); | |
07b3bbf2 | 3193 | |
0b7b376d | 3194 | gfor_fndecl_in_pack = gfc_build_library_function_decl_with_spec ( |
6368f166 DF |
3195 | get_identifier (PREFIX("internal_pack")), ".r", |
3196 | pvoid_type_node, 1, pvoid_type_node); | |
6de9cd9a | 3197 | |
0b7b376d | 3198 | gfor_fndecl_in_unpack = gfc_build_library_function_decl_with_spec ( |
6368f166 DF |
3199 | get_identifier (PREFIX("internal_unpack")), ".wR", |
3200 | void_type_node, 2, pvoid_type_node, pvoid_type_node); | |
3201 | ||
3202 | gfor_fndecl_associated = gfc_build_library_function_decl_with_spec ( | |
3203 | get_identifier (PREFIX("associated")), ".RR", | |
3204 | integer_type_node, 2, ppvoid_type_node, ppvoid_type_node); | |
4ca4be7f | 3205 | DECL_PURE_P (gfor_fndecl_associated) = 1; |
22b139e1 | 3206 | TREE_NOTHROW (gfor_fndecl_associated) = 1; |
6de9cd9a | 3207 | |
60386f50 TB |
3208 | /* Coarray library calls. */ |
3209 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
3210 | { | |
3211 | tree pint_type, pppchar_type; | |
3212 | ||
3213 | pint_type = build_pointer_type (integer_type_node); | |
3214 | pppchar_type | |
3215 | = build_pointer_type (build_pointer_type (pchar_type_node)); | |
3216 | ||
3217 | gfor_fndecl_caf_init = gfc_build_library_function_decl ( | |
3218 | get_identifier (PREFIX("caf_init")), void_type_node, | |
3219 | 4, pint_type, pppchar_type, pint_type, pint_type); | |
3220 | ||
3221 | gfor_fndecl_caf_finalize = gfc_build_library_function_decl ( | |
3222 | get_identifier (PREFIX("caf_finalize")), void_type_node, 0); | |
3223 | ||
b8ff4e88 TB |
3224 | gfor_fndecl_caf_register = gfc_build_library_function_decl_with_spec ( |
3225 | get_identifier (PREFIX("caf_register")), "...WWW", pvoid_type_node, 6, | |
3226 | size_type_node, integer_type_node, ppvoid_type_node, pint_type, | |
5d81ddd0 TB |
3227 | pchar_type_node, integer_type_node); |
3228 | ||
3229 | gfor_fndecl_caf_deregister = gfc_build_library_function_decl_with_spec ( | |
3230 | get_identifier (PREFIX("caf_deregister")), ".WWW", void_type_node, 4, | |
3231 | ppvoid_type_node, pint_type, pchar_type_node, integer_type_node); | |
b8ff4e88 | 3232 | |
60386f50 TB |
3233 | gfor_fndecl_caf_critical = gfc_build_library_function_decl ( |
3234 | get_identifier (PREFIX("caf_critical")), void_type_node, 0); | |
3235 | ||
3236 | gfor_fndecl_caf_end_critical = gfc_build_library_function_decl ( | |
3237 | get_identifier (PREFIX("caf_end_critical")), void_type_node, 0); | |
3238 | ||
3239 | gfor_fndecl_caf_sync_all = gfc_build_library_function_decl_with_spec ( | |
f5c01f5b DC |
3240 | get_identifier (PREFIX("caf_sync_all")), ".WW", void_type_node, |
3241 | 3, pint_type, build_pointer_type (pchar_type_node), integer_type_node); | |
60386f50 TB |
3242 | |
3243 | gfor_fndecl_caf_sync_images = gfc_build_library_function_decl_with_spec ( | |
f5c01f5b DC |
3244 | get_identifier (PREFIX("caf_sync_images")), ".RRWW", void_type_node, |
3245 | 5, integer_type_node, pint_type, pint_type, | |
3246 | build_pointer_type (pchar_type_node), integer_type_node); | |
60386f50 TB |
3247 | |
3248 | gfor_fndecl_caf_error_stop = gfc_build_library_function_decl ( | |
3249 | get_identifier (PREFIX("caf_error_stop")), | |
3250 | void_type_node, 1, gfc_int4_type_node); | |
3251 | /* CAF's ERROR STOP doesn't return. */ | |
3252 | TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop) = 1; | |
3253 | ||
3254 | gfor_fndecl_caf_error_stop_str = gfc_build_library_function_decl_with_spec ( | |
3255 | get_identifier (PREFIX("caf_error_stop_str")), ".R.", | |
3256 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
3257 | /* CAF's ERROR STOP doesn't return. */ | |
3258 | TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop_str) = 1; | |
3259 | } | |
3260 | ||
6de9cd9a DN |
3261 | gfc_build_intrinsic_function_decls (); |
3262 | gfc_build_intrinsic_lib_fndecls (); | |
3263 | gfc_build_io_library_fndecls (); | |
3264 | } | |
3265 | ||
3266 | ||
1f2959f0 | 3267 | /* Evaluate the length of dummy character variables. */ |
6de9cd9a | 3268 | |
0019d498 DK |
3269 | static void |
3270 | gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, | |
3271 | gfc_wrapped_block *block) | |
6de9cd9a | 3272 | { |
0019d498 | 3273 | stmtblock_t init; |
6de9cd9a | 3274 | |
faf28b3a | 3275 | gfc_finish_decl (cl->backend_decl); |
6de9cd9a | 3276 | |
0019d498 | 3277 | gfc_start_block (&init); |
6de9cd9a DN |
3278 | |
3279 | /* Evaluate the string length expression. */ | |
0019d498 | 3280 | gfc_conv_string_length (cl, NULL, &init); |
417ab240 | 3281 | |
0019d498 | 3282 | gfc_trans_vla_type_sizes (sym, &init); |
417ab240 | 3283 | |
0019d498 | 3284 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
6de9cd9a DN |
3285 | } |
3286 | ||
3287 | ||
3288 | /* Allocate and cleanup an automatic character variable. */ | |
3289 | ||
0019d498 DK |
3290 | static void |
3291 | gfc_trans_auto_character_variable (gfc_symbol * sym, gfc_wrapped_block * block) | |
6de9cd9a | 3292 | { |
0019d498 | 3293 | stmtblock_t init; |
6de9cd9a | 3294 | tree decl; |
6de9cd9a DN |
3295 | tree tmp; |
3296 | ||
6e45f57b | 3297 | gcc_assert (sym->backend_decl); |
bc21d315 | 3298 | gcc_assert (sym->ts.u.cl && sym->ts.u.cl->length); |
6de9cd9a | 3299 | |
323cea66 | 3300 | gfc_init_block (&init); |
6de9cd9a DN |
3301 | |
3302 | /* Evaluate the string length expression. */ | |
0019d498 | 3303 | gfc_conv_string_length (sym->ts.u.cl, NULL, &init); |
6de9cd9a | 3304 | |
0019d498 | 3305 | gfc_trans_vla_type_sizes (sym, &init); |
417ab240 | 3306 | |
6de9cd9a DN |
3307 | decl = sym->backend_decl; |
3308 | ||
1a186ec5 | 3309 | /* Emit a DECL_EXPR for this variable, which will cause the |
4ab2db93 | 3310 | gimplifier to allocate storage, and all that good stuff. */ |
bc98ed60 | 3311 | tmp = fold_build1_loc (input_location, DECL_EXPR, TREE_TYPE (decl), decl); |
0019d498 | 3312 | gfc_add_expr_to_block (&init, tmp); |
1a186ec5 | 3313 | |
0019d498 | 3314 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
6de9cd9a DN |
3315 | } |
3316 | ||
910450c1 FW |
3317 | /* Set the initial value of ASSIGN statement auxiliary variable explicitly. */ |
3318 | ||
0019d498 DK |
3319 | static void |
3320 | gfc_trans_assign_aux_var (gfc_symbol * sym, gfc_wrapped_block * block) | |
910450c1 | 3321 | { |
0019d498 | 3322 | stmtblock_t init; |
910450c1 FW |
3323 | |
3324 | gcc_assert (sym->backend_decl); | |
0019d498 | 3325 | gfc_start_block (&init); |
910450c1 FW |
3326 | |
3327 | /* Set the initial value to length. See the comments in | |
3328 | function gfc_add_assign_aux_vars in this file. */ | |
0019d498 | 3329 | gfc_add_modify (&init, GFC_DECL_STRING_LEN (sym->backend_decl), |
df09d1d5 | 3330 | build_int_cst (gfc_charlen_type_node, -2)); |
910450c1 | 3331 | |
0019d498 | 3332 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
910450c1 FW |
3333 | } |
3334 | ||
417ab240 JJ |
3335 | static void |
3336 | gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body) | |
3337 | { | |
3338 | tree t = *tp, var, val; | |
3339 | ||
3340 | if (t == NULL || t == error_mark_node) | |
3341 | return; | |
3342 | if (TREE_CONSTANT (t) || DECL_P (t)) | |
3343 | return; | |
3344 | ||
3345 | if (TREE_CODE (t) == SAVE_EXPR) | |
3346 | { | |
3347 | if (SAVE_EXPR_RESOLVED_P (t)) | |
3348 | { | |
3349 | *tp = TREE_OPERAND (t, 0); | |
3350 | return; | |
3351 | } | |
3352 | val = TREE_OPERAND (t, 0); | |
3353 | } | |
3354 | else | |
3355 | val = t; | |
3356 | ||
3357 | var = gfc_create_var_np (TREE_TYPE (t), NULL); | |
3358 | gfc_add_decl_to_function (var); | |
726a989a | 3359 | gfc_add_modify (body, var, val); |
417ab240 JJ |
3360 | if (TREE_CODE (t) == SAVE_EXPR) |
3361 | TREE_OPERAND (t, 0) = var; | |
3362 | *tp = var; | |
3363 | } | |
3364 | ||
3365 | static void | |
3366 | gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body) | |
3367 | { | |
3368 | tree t; | |
3369 | ||
3370 | if (type == NULL || type == error_mark_node) | |
3371 | return; | |
3372 | ||
3373 | type = TYPE_MAIN_VARIANT (type); | |
3374 | ||
3375 | if (TREE_CODE (type) == INTEGER_TYPE) | |
3376 | { | |
3377 | gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body); | |
3378 | gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body); | |
3379 | ||
3380 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3381 | { | |
3382 | TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type); | |
3383 | TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type); | |
3384 | } | |
3385 | } | |
3386 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
3387 | { | |
3388 | gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body); | |
3389 | gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body); | |
3390 | gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body); | |
3391 | gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body); | |
3392 | ||
3393 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3394 | { | |
3395 | TYPE_SIZE (t) = TYPE_SIZE (type); | |
3396 | TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type); | |
3397 | } | |
3398 | } | |
3399 | } | |
3400 | ||
3401 | /* Make sure all type sizes and array domains are either constant, | |
3402 | or variable or parameter decls. This is a simplified variant | |
3403 | of gimplify_type_sizes, but we can't use it here, as none of the | |
3404 | variables in the expressions have been gimplified yet. | |
3405 | As type sizes and domains for various variable length arrays | |
3406 | contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars | |
3407 | time, without this routine gimplify_type_sizes in the middle-end | |
3408 | could result in the type sizes being gimplified earlier than where | |
3409 | those variables are initialized. */ | |
3410 | ||
3411 | void | |
3412 | gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body) | |
3413 | { | |
3414 | tree type = TREE_TYPE (sym->backend_decl); | |
3415 | ||
3416 | if (TREE_CODE (type) == FUNCTION_TYPE | |
3417 | && (sym->attr.function || sym->attr.result || sym->attr.entry)) | |
3418 | { | |
3419 | if (! current_fake_result_decl) | |
3420 | return; | |
3421 | ||
3422 | type = TREE_TYPE (TREE_VALUE (current_fake_result_decl)); | |
3423 | } | |
3424 | ||
3425 | while (POINTER_TYPE_P (type)) | |
3426 | type = TREE_TYPE (type); | |
3427 | ||
3428 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
3429 | { | |
3430 | tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type); | |
3431 | ||
3432 | while (POINTER_TYPE_P (etype)) | |
3433 | etype = TREE_TYPE (etype); | |
3434 | ||
3435 | gfc_trans_vla_type_sizes_1 (etype, body); | |
3436 | } | |
3437 | ||
3438 | gfc_trans_vla_type_sizes_1 (type, body); | |
3439 | } | |
3440 | ||
6de9cd9a | 3441 | |
b7b184a8 | 3442 | /* Initialize a derived type by building an lvalue from the symbol |
2b56d6a4 TB |
3443 | and using trans_assignment to do the work. Set dealloc to false |
3444 | if no deallocation prior the assignment is needed. */ | |
0019d498 DK |
3445 | void |
3446 | gfc_init_default_dt (gfc_symbol * sym, stmtblock_t * block, bool dealloc) | |
d3837072 | 3447 | { |
b7b184a8 | 3448 | gfc_expr *e; |
d3837072 PT |
3449 | tree tmp; |
3450 | tree present; | |
3451 | ||
0019d498 DK |
3452 | gcc_assert (block); |
3453 | ||
b7b184a8 PT |
3454 | gcc_assert (!sym->attr.allocatable); |
3455 | gfc_set_sym_referenced (sym); | |
3456 | e = gfc_lval_expr_from_sym (sym); | |
2b56d6a4 | 3457 | tmp = gfc_trans_assignment (e, sym->value, false, dealloc); |
ba6f7079 TB |
3458 | if (sym->attr.dummy && (sym->attr.optional |
3459 | || sym->ns->proc_name->attr.entry_master)) | |
d3837072 | 3460 | { |
b7b184a8 | 3461 | present = gfc_conv_expr_present (sym); |
5d44e5c8 TB |
3462 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), present, |
3463 | tmp, build_empty_stmt (input_location)); | |
d3837072 | 3464 | } |
0019d498 | 3465 | gfc_add_expr_to_block (block, tmp); |
b7b184a8 | 3466 | gfc_free_expr (e); |
d3837072 PT |
3467 | } |
3468 | ||
3469 | ||
2c69d527 PT |
3470 | /* Initialize INTENT(OUT) derived type dummies. As well as giving |
3471 | them their default initializer, if they do not have allocatable | |
3472 | components, they have their allocatable components deallocated. */ | |
3473 | ||
0019d498 DK |
3474 | static void |
3475 | init_intent_out_dt (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
b7b184a8 | 3476 | { |
0019d498 | 3477 | stmtblock_t init; |
b7b184a8 | 3478 | gfc_formal_arglist *f; |
2c69d527 | 3479 | tree tmp; |
8a272531 | 3480 | tree present; |
b7b184a8 | 3481 | |
0019d498 | 3482 | gfc_init_block (&init); |
4cbc9039 | 3483 | for (f = gfc_sym_get_dummy_args (proc_sym); f; f = f->next) |
b7b184a8 | 3484 | if (f->sym && f->sym->attr.intent == INTENT_OUT |
758e12af TB |
3485 | && !f->sym->attr.pointer |
3486 | && f->sym->ts.type == BT_DERIVED) | |
2c69d527 | 3487 | { |
ba6f7079 | 3488 | if (f->sym->ts.u.derived->attr.alloc_comp && !f->sym->value) |
2c69d527 | 3489 | { |
bc21d315 | 3490 | tmp = gfc_deallocate_alloc_comp (f->sym->ts.u.derived, |
2c69d527 PT |
3491 | f->sym->backend_decl, |
3492 | f->sym->as ? f->sym->as->rank : 0); | |
8a272531 | 3493 | |
ba6f7079 TB |
3494 | if (f->sym->attr.optional |
3495 | || f->sym->ns->proc_name->attr.entry_master) | |
3496 | { | |
3497 | present = gfc_conv_expr_present (f->sym); | |
5d44e5c8 TB |
3498 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), |
3499 | present, tmp, | |
3500 | build_empty_stmt (input_location)); | |
ba6f7079 | 3501 | } |
8a272531 | 3502 | |
0019d498 | 3503 | gfc_add_expr_to_block (&init, tmp); |
2c69d527 | 3504 | } |
ba6f7079 | 3505 | else if (f->sym->value) |
0019d498 | 3506 | gfc_init_default_dt (f->sym, &init, true); |
2c69d527 | 3507 | } |
c7f17815 JW |
3508 | else if (f->sym && f->sym->attr.intent == INTENT_OUT |
3509 | && f->sym->ts.type == BT_CLASS | |
3510 | && !CLASS_DATA (f->sym)->attr.class_pointer | |
3511 | && CLASS_DATA (f->sym)->ts.u.derived->attr.alloc_comp) | |
3512 | { | |
2be13164 TB |
3513 | tmp = gfc_class_data_get (f->sym->backend_decl); |
3514 | if (CLASS_DATA (f->sym)->as == NULL) | |
3515 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
c7f17815 JW |
3516 | tmp = gfc_deallocate_alloc_comp (CLASS_DATA (f->sym)->ts.u.derived, |
3517 | tmp, | |
3518 | CLASS_DATA (f->sym)->as ? | |
3519 | CLASS_DATA (f->sym)->as->rank : 0); | |
3520 | ||
3521 | if (f->sym->attr.optional || f->sym->ns->proc_name->attr.entry_master) | |
3522 | { | |
3523 | present = gfc_conv_expr_present (f->sym); | |
3524 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), | |
3525 | present, tmp, | |
3526 | build_empty_stmt (input_location)); | |
3527 | } | |
3528 | ||
3529 | gfc_add_expr_to_block (&init, tmp); | |
3530 | } | |
b7b184a8 | 3531 | |
0019d498 | 3532 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
b7b184a8 PT |
3533 | } |
3534 | ||
d3837072 | 3535 | |
6de9cd9a DN |
3536 | /* Generate function entry and exit code, and add it to the function body. |
3537 | This includes: | |
f8d0aee5 | 3538 | Allocation and initialization of array variables. |
6de9cd9a | 3539 | Allocation of character string variables. |
910450c1 | 3540 | Initialization and possibly repacking of dummy arrays. |
1517fd57 | 3541 | Initialization of ASSIGN statement auxiliary variable. |
571d54de | 3542 | Initialization of ASSOCIATE names. |
1517fd57 | 3543 | Automatic deallocation. */ |
6de9cd9a | 3544 | |
d74d8807 DK |
3545 | void |
3546 | gfc_trans_deferred_vars (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
6de9cd9a DN |
3547 | { |
3548 | locus loc; | |
3549 | gfc_symbol *sym; | |
417ab240 | 3550 | gfc_formal_arglist *f; |
0019d498 | 3551 | stmtblock_t tmpblock; |
7114edca | 3552 | bool seen_trans_deferred_array = false; |
8d51f26f PT |
3553 | tree tmp = NULL; |
3554 | gfc_expr *e; | |
3555 | gfc_se se; | |
3556 | stmtblock_t init; | |
6de9cd9a DN |
3557 | |
3558 | /* Deal with implicit return variables. Explicit return variables will | |
3559 | already have been added. */ | |
3560 | if (gfc_return_by_reference (proc_sym) && proc_sym->result == proc_sym) | |
3561 | { | |
3562 | if (!current_fake_result_decl) | |
3563 | { | |
d198b59a JJ |
3564 | gfc_entry_list *el = NULL; |
3565 | if (proc_sym->attr.entry_master) | |
3566 | { | |
3567 | for (el = proc_sym->ns->entries; el; el = el->next) | |
3568 | if (el->sym != el->sym->result) | |
3569 | break; | |
3570 | } | |
766d0c8c DF |
3571 | /* TODO: move to the appropriate place in resolve.c. */ |
3572 | if (warn_return_type && el == NULL) | |
3573 | gfc_warning ("Return value of function '%s' at %L not set", | |
3574 | proc_sym->name, &proc_sym->declared_at); | |
6de9cd9a | 3575 | } |
d198b59a | 3576 | else if (proc_sym->as) |
6de9cd9a | 3577 | { |
417ab240 | 3578 | tree result = TREE_VALUE (current_fake_result_decl); |
d74d8807 | 3579 | gfc_trans_dummy_array_bias (proc_sym, result, block); |
f5f701ad PT |
3580 | |
3581 | /* An automatic character length, pointer array result. */ | |
3582 | if (proc_sym->ts.type == BT_CHARACTER | |
bc21d315 | 3583 | && TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) |
d74d8807 | 3584 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
6de9cd9a DN |
3585 | } |
3586 | else if (proc_sym->ts.type == BT_CHARACTER) | |
3587 | { | |
8d51f26f PT |
3588 | if (proc_sym->ts.deferred) |
3589 | { | |
3590 | tmp = NULL; | |
ceccaacf TB |
3591 | gfc_save_backend_locus (&loc); |
3592 | gfc_set_backend_locus (&proc_sym->declared_at); | |
8d51f26f PT |
3593 | gfc_start_block (&init); |
3594 | /* Zero the string length on entry. */ | |
3595 | gfc_add_modify (&init, proc_sym->ts.u.cl->backend_decl, | |
3596 | build_int_cst (gfc_charlen_type_node, 0)); | |
3597 | /* Null the pointer. */ | |
3598 | e = gfc_lval_expr_from_sym (proc_sym); | |
3599 | gfc_init_se (&se, NULL); | |
3600 | se.want_pointer = 1; | |
3601 | gfc_conv_expr (&se, e); | |
3602 | gfc_free_expr (e); | |
3603 | tmp = se.expr; | |
3604 | gfc_add_modify (&init, tmp, | |
3605 | fold_convert (TREE_TYPE (se.expr), | |
3606 | null_pointer_node)); | |
ceccaacf | 3607 | gfc_restore_backend_locus (&loc); |
8d51f26f PT |
3608 | |
3609 | /* Pass back the string length on exit. */ | |
3610 | tmp = proc_sym->ts.u.cl->passed_length; | |
3611 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
3612 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
3613 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
3614 | gfc_charlen_type_node, tmp, | |
3615 | proc_sym->ts.u.cl->backend_decl); | |
3616 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
3617 | } | |
3618 | else if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) | |
d74d8807 | 3619 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
6de9cd9a DN |
3620 | } |
3621 | else | |
973ff4c0 TS |
3622 | gcc_assert (gfc_option.flag_f2c |
3623 | && proc_sym->ts.type == BT_COMPLEX); | |
6de9cd9a DN |
3624 | } |
3625 | ||
d3837072 PT |
3626 | /* Initialize the INTENT(OUT) derived type dummy arguments. This |
3627 | should be done here so that the offsets and lbounds of arrays | |
3628 | are available. */ | |
ceccaacf TB |
3629 | gfc_save_backend_locus (&loc); |
3630 | gfc_set_backend_locus (&proc_sym->declared_at); | |
d74d8807 | 3631 | init_intent_out_dt (proc_sym, block); |
ceccaacf | 3632 | gfc_restore_backend_locus (&loc); |
d3837072 | 3633 | |
6de9cd9a DN |
3634 | for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink) |
3635 | { | |
5046aff5 | 3636 | bool sym_has_alloc_comp = (sym->ts.type == BT_DERIVED) |
bc21d315 | 3637 | && sym->ts.u.derived->attr.alloc_comp; |
571d54de | 3638 | if (sym->assoc) |
6312ef45 JW |
3639 | continue; |
3640 | ||
0c1e1df8 JJ |
3641 | if (sym->attr.subref_array_pointer |
3642 | && GFC_DECL_SPAN (sym->backend_decl) | |
3643 | && !TREE_STATIC (GFC_DECL_SPAN (sym->backend_decl))) | |
3644 | { | |
3645 | gfc_init_block (&tmpblock); | |
3646 | gfc_add_modify (&tmpblock, GFC_DECL_SPAN (sym->backend_decl), | |
3647 | build_int_cst (gfc_array_index_type, 0)); | |
3648 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
3649 | NULL_TREE); | |
3650 | } | |
3651 | ||
4ca9939b | 3652 | if (sym->attr.dimension || sym->attr.codimension) |
6de9cd9a | 3653 | { |
cde3a7a9 AL |
3654 | /* Assumed-size Cray pointees need to be treated as AS_EXPLICIT. */ |
3655 | array_type tmp = sym->as->type; | |
3656 | if (tmp == AS_ASSUMED_SIZE && sym->as->cp_was_assumed) | |
3657 | tmp = AS_EXPLICIT; | |
3658 | switch (tmp) | |
6de9cd9a DN |
3659 | { |
3660 | case AS_EXPLICIT: | |
3661 | if (sym->attr.dummy || sym->attr.result) | |
d74d8807 | 3662 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
6de9cd9a DN |
3663 | else if (sym->attr.pointer || sym->attr.allocatable) |
3664 | { | |
3665 | if (TREE_STATIC (sym->backend_decl)) | |
ceccaacf TB |
3666 | { |
3667 | gfc_save_backend_locus (&loc); | |
3668 | gfc_set_backend_locus (&sym->declared_at); | |
3669 | gfc_trans_static_array_pointer (sym); | |
3670 | gfc_restore_backend_locus (&loc); | |
3671 | } | |
6de9cd9a | 3672 | else |
7114edca PT |
3673 | { |
3674 | seen_trans_deferred_array = true; | |
d74d8807 | 3675 | gfc_trans_deferred_array (sym, block); |
7114edca | 3676 | } |
6de9cd9a | 3677 | } |
9f3761c5 TB |
3678 | else if (sym->attr.codimension && TREE_STATIC (sym->backend_decl)) |
3679 | { | |
3680 | gfc_init_block (&tmpblock); | |
3681 | gfc_trans_array_cobounds (TREE_TYPE (sym->backend_decl), | |
3682 | &tmpblock, sym); | |
3683 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
3684 | NULL_TREE); | |
3685 | continue; | |
3686 | } | |
b8ff4e88 | 3687 | else if (gfc_option.coarray != GFC_FCOARRAY_LIB) |
6de9cd9a | 3688 | { |
ceccaacf TB |
3689 | gfc_save_backend_locus (&loc); |
3690 | gfc_set_backend_locus (&sym->declared_at); | |
3691 | ||
7114edca PT |
3692 | if (sym_has_alloc_comp) |
3693 | { | |
3694 | seen_trans_deferred_array = true; | |
d74d8807 | 3695 | gfc_trans_deferred_array (sym, block); |
7114edca | 3696 | } |
b7b184a8 PT |
3697 | else if (sym->ts.type == BT_DERIVED |
3698 | && sym->value | |
3699 | && !sym->attr.data | |
3700 | && sym->attr.save == SAVE_NONE) | |
0019d498 DK |
3701 | { |
3702 | gfc_start_block (&tmpblock); | |
3703 | gfc_init_default_dt (sym, &tmpblock, false); | |
d74d8807 | 3704 | gfc_add_init_cleanup (block, |
0019d498 DK |
3705 | gfc_finish_block (&tmpblock), |
3706 | NULL_TREE); | |
3707 | } | |
7114edca | 3708 | |
0019d498 | 3709 | gfc_trans_auto_array_allocation (sym->backend_decl, |
d74d8807 | 3710 | sym, block); |
363aab21 | 3711 | gfc_restore_backend_locus (&loc); |
6de9cd9a DN |
3712 | } |
3713 | break; | |
3714 | ||
3715 | case AS_ASSUMED_SIZE: | |
3716 | /* Must be a dummy parameter. */ | |
b3aefde2 | 3717 | gcc_assert (sym->attr.dummy || sym->as->cp_was_assumed); |
6de9cd9a DN |
3718 | |
3719 | /* We should always pass assumed size arrays the g77 way. */ | |
b3aefde2 | 3720 | if (sym->attr.dummy) |
d74d8807 | 3721 | gfc_trans_g77_array (sym, block); |
0019d498 | 3722 | break; |
6de9cd9a DN |
3723 | |
3724 | case AS_ASSUMED_SHAPE: | |
3725 | /* Must be a dummy parameter. */ | |
6e45f57b | 3726 | gcc_assert (sym->attr.dummy); |
6de9cd9a | 3727 | |
d74d8807 | 3728 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
6de9cd9a DN |
3729 | break; |
3730 | ||
c62c6622 | 3731 | case AS_ASSUMED_RANK: |
6de9cd9a | 3732 | case AS_DEFERRED: |
7114edca | 3733 | seen_trans_deferred_array = true; |
d74d8807 | 3734 | gfc_trans_deferred_array (sym, block); |
6de9cd9a DN |
3735 | break; |
3736 | ||
3737 | default: | |
6e45f57b | 3738 | gcc_unreachable (); |
6de9cd9a | 3739 | } |
7114edca | 3740 | if (sym_has_alloc_comp && !seen_trans_deferred_array) |
d74d8807 | 3741 | gfc_trans_deferred_array (sym, block); |
6de9cd9a | 3742 | } |
c49ea23d PT |
3743 | else if ((!sym->attr.dummy || sym->ts.deferred) |
3744 | && (sym->ts.type == BT_CLASS | |
102344e2 | 3745 | && CLASS_DATA (sym)->attr.class_pointer)) |
1b26c26b | 3746 | continue; |
8d51f26f | 3747 | else if ((!sym->attr.dummy || sym->ts.deferred) |
25cbe58f TB |
3748 | && (sym->attr.allocatable |
3749 | || (sym->ts.type == BT_CLASS | |
3750 | && CLASS_DATA (sym)->attr.allocatable))) | |
1517fd57 | 3751 | { |
36085529 | 3752 | if (!sym->attr.save && gfc_option.flag_max_stack_var_size != 0) |
64b33a7e | 3753 | { |
5d81ddd0 TB |
3754 | tree descriptor = NULL_TREE; |
3755 | ||
64b33a7e TB |
3756 | /* Nullify and automatic deallocation of allocatable |
3757 | scalars. */ | |
64b33a7e TB |
3758 | e = gfc_lval_expr_from_sym (sym); |
3759 | if (sym->ts.type == BT_CLASS) | |
b04533af | 3760 | gfc_add_data_component (e); |
64b33a7e TB |
3761 | |
3762 | gfc_init_se (&se, NULL); | |
c49ea23d PT |
3763 | if (sym->ts.type != BT_CLASS |
3764 | || sym->ts.u.derived->attr.dimension | |
3765 | || sym->ts.u.derived->attr.codimension) | |
3766 | { | |
3767 | se.want_pointer = 1; | |
3768 | gfc_conv_expr (&se, e); | |
3769 | } | |
3770 | else if (sym->ts.type == BT_CLASS | |
3771 | && !CLASS_DATA (sym)->attr.dimension | |
3772 | && !CLASS_DATA (sym)->attr.codimension) | |
3773 | { | |
3774 | se.want_pointer = 1; | |
3775 | gfc_conv_expr (&se, e); | |
3776 | } | |
3777 | else | |
3778 | { | |
3779 | gfc_conv_expr (&se, e); | |
5d81ddd0 | 3780 | descriptor = se.expr; |
c49ea23d PT |
3781 | se.expr = gfc_conv_descriptor_data_addr (se.expr); |
3782 | se.expr = build_fold_indirect_ref_loc (input_location, se.expr); | |
3783 | } | |
64b33a7e TB |
3784 | gfc_free_expr (e); |
3785 | ||
ceccaacf TB |
3786 | gfc_save_backend_locus (&loc); |
3787 | gfc_set_backend_locus (&sym->declared_at); | |
0019d498 | 3788 | gfc_start_block (&init); |
8d51f26f PT |
3789 | |
3790 | if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
3791 | { | |
3792 | /* Nullify when entering the scope. */ | |
3793 | gfc_add_modify (&init, se.expr, | |
3794 | fold_convert (TREE_TYPE (se.expr), | |
3795 | null_pointer_node)); | |
3796 | } | |
3797 | ||
431e4685 | 3798 | if ((sym->attr.dummy ||sym->attr.result) |
8d51f26f PT |
3799 | && sym->ts.type == BT_CHARACTER |
3800 | && sym->ts.deferred) | |
3801 | { | |
3802 | /* Character length passed by reference. */ | |
3803 | tmp = sym->ts.u.cl->passed_length; | |
3804 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
3805 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
3806 | ||
3807 | if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
3808 | /* Zero the string length when entering the scope. */ | |
3809 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, | |
3810 | build_int_cst (gfc_charlen_type_node, 0)); | |
3811 | else | |
3812 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, tmp); | |
3813 | ||
ceccaacf TB |
3814 | gfc_restore_backend_locus (&loc); |
3815 | ||
8d51f26f PT |
3816 | /* Pass the final character length back. */ |
3817 | if (sym->attr.intent != INTENT_IN) | |
3818 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
3819 | gfc_charlen_type_node, tmp, | |
3820 | sym->ts.u.cl->backend_decl); | |
3821 | else | |
3822 | tmp = NULL_TREE; | |
3823 | } | |
ceccaacf TB |
3824 | else |
3825 | gfc_restore_backend_locus (&loc); | |
64b33a7e TB |
3826 | |
3827 | /* Deallocate when leaving the scope. Nullifying is not | |
3828 | needed. */ | |
8d51f26f | 3829 | if (!sym->attr.result && !sym->attr.dummy) |
5d81ddd0 TB |
3830 | { |
3831 | if (sym->ts.type == BT_CLASS | |
3832 | && CLASS_DATA (sym)->attr.codimension) | |
3833 | tmp = gfc_deallocate_with_status (descriptor, NULL_TREE, | |
3834 | NULL_TREE, NULL_TREE, | |
3835 | NULL_TREE, true, NULL, | |
3836 | true); | |
3837 | else | |
76c1a7ec TB |
3838 | { |
3839 | gfc_expr *expr = gfc_lval_expr_from_sym (sym); | |
3840 | tmp = gfc_deallocate_scalar_with_status (se.expr, NULL_TREE, | |
3841 | true, expr, sym->ts); | |
3842 | gfc_free_expr (expr); | |
3843 | } | |
5d81ddd0 | 3844 | } |
8c077737 JW |
3845 | if (sym->ts.type == BT_CLASS) |
3846 | { | |
3847 | /* Initialize _vptr to declared type. */ | |
8b704316 | 3848 | gfc_symbol *vtab; |
8c077737 | 3849 | tree rhs; |
ceccaacf TB |
3850 | |
3851 | gfc_save_backend_locus (&loc); | |
3852 | gfc_set_backend_locus (&sym->declared_at); | |
8c077737 JW |
3853 | e = gfc_lval_expr_from_sym (sym); |
3854 | gfc_add_vptr_component (e); | |
3855 | gfc_init_se (&se, NULL); | |
3856 | se.want_pointer = 1; | |
3857 | gfc_conv_expr (&se, e); | |
3858 | gfc_free_expr (e); | |
8b704316 PT |
3859 | if (UNLIMITED_POLY (sym)) |
3860 | rhs = build_int_cst (TREE_TYPE (se.expr), 0); | |
3861 | else | |
3862 | { | |
3863 | vtab = gfc_find_derived_vtab (sym->ts.u.derived); | |
3864 | rhs = gfc_build_addr_expr (TREE_TYPE (se.expr), | |
3865 | gfc_get_symbol_decl (vtab)); | |
3866 | } | |
8c077737 | 3867 | gfc_add_modify (&init, se.expr, rhs); |
ceccaacf | 3868 | gfc_restore_backend_locus (&loc); |
8c077737 JW |
3869 | } |
3870 | ||
d74d8807 | 3871 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); |
64b33a7e | 3872 | } |
1517fd57 | 3873 | } |
8d51f26f PT |
3874 | else if (sym->ts.type == BT_CHARACTER && sym->ts.deferred) |
3875 | { | |
3876 | tree tmp = NULL; | |
3877 | stmtblock_t init; | |
3878 | ||
3879 | /* If we get to here, all that should be left are pointers. */ | |
3880 | gcc_assert (sym->attr.pointer); | |
3881 | ||
3882 | if (sym->attr.dummy) | |
3883 | { | |
3884 | gfc_start_block (&init); | |
3885 | ||
3886 | /* Character length passed by reference. */ | |
3887 | tmp = sym->ts.u.cl->passed_length; | |
3888 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
3889 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
3890 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, tmp); | |
3891 | /* Pass the final character length back. */ | |
3892 | if (sym->attr.intent != INTENT_IN) | |
3893 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
3894 | gfc_charlen_type_node, tmp, | |
3895 | sym->ts.u.cl->backend_decl); | |
3896 | else | |
3897 | tmp = NULL_TREE; | |
3898 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
3899 | } | |
3900 | } | |
e69afb29 SK |
3901 | else if (sym->ts.deferred) |
3902 | gfc_fatal_error ("Deferred type parameter not yet supported"); | |
3a28464c | 3903 | else if (sym_has_alloc_comp) |
d74d8807 | 3904 | gfc_trans_deferred_array (sym, block); |
6de9cd9a DN |
3905 | else if (sym->ts.type == BT_CHARACTER) |
3906 | { | |
363aab21 | 3907 | gfc_save_backend_locus (&loc); |
6de9cd9a DN |
3908 | gfc_set_backend_locus (&sym->declared_at); |
3909 | if (sym->attr.dummy || sym->attr.result) | |
d74d8807 | 3910 | gfc_trans_dummy_character (sym, sym->ts.u.cl, block); |
6de9cd9a | 3911 | else |
d74d8807 | 3912 | gfc_trans_auto_character_variable (sym, block); |
363aab21 | 3913 | gfc_restore_backend_locus (&loc); |
6de9cd9a | 3914 | } |
910450c1 FW |
3915 | else if (sym->attr.assign) |
3916 | { | |
363aab21 | 3917 | gfc_save_backend_locus (&loc); |
910450c1 | 3918 | gfc_set_backend_locus (&sym->declared_at); |
d74d8807 | 3919 | gfc_trans_assign_aux_var (sym, block); |
363aab21 | 3920 | gfc_restore_backend_locus (&loc); |
910450c1 | 3921 | } |
b7b184a8 PT |
3922 | else if (sym->ts.type == BT_DERIVED |
3923 | && sym->value | |
3924 | && !sym->attr.data | |
3925 | && sym->attr.save == SAVE_NONE) | |
0019d498 DK |
3926 | { |
3927 | gfc_start_block (&tmpblock); | |
3928 | gfc_init_default_dt (sym, &tmpblock, false); | |
d74d8807 | 3929 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), |
0019d498 DK |
3930 | NULL_TREE); |
3931 | } | |
8b704316 | 3932 | else if (!(UNLIMITED_POLY(sym))) |
6e45f57b | 3933 | gcc_unreachable (); |
6de9cd9a DN |
3934 | } |
3935 | ||
0019d498 | 3936 | gfc_init_block (&tmpblock); |
417ab240 | 3937 | |
4cbc9039 | 3938 | for (f = gfc_sym_get_dummy_args (proc_sym); f; f = f->next) |
08113c73 PT |
3939 | { |
3940 | if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER) | |
3941 | { | |
bc21d315 JW |
3942 | gcc_assert (f->sym->ts.u.cl->backend_decl != NULL); |
3943 | if (TREE_CODE (f->sym->ts.u.cl->backend_decl) == PARM_DECL) | |
0019d498 | 3944 | gfc_trans_vla_type_sizes (f->sym, &tmpblock); |
08113c73 | 3945 | } |
08113c73 | 3946 | } |
417ab240 JJ |
3947 | |
3948 | if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER | |
3949 | && current_fake_result_decl != NULL) | |
3950 | { | |
bc21d315 JW |
3951 | gcc_assert (proc_sym->ts.u.cl->backend_decl != NULL); |
3952 | if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == PARM_DECL) | |
0019d498 | 3953 | gfc_trans_vla_type_sizes (proc_sym, &tmpblock); |
417ab240 JJ |
3954 | } |
3955 | ||
d74d8807 | 3956 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), NULL_TREE); |
6de9cd9a DN |
3957 | } |
3958 | ||
a64f5186 JJ |
3959 | static GTY ((param_is (struct module_htab_entry))) htab_t module_htab; |
3960 | ||
3961 | /* Hash and equality functions for module_htab. */ | |
3962 | ||
3963 | static hashval_t | |
3964 | module_htab_do_hash (const void *x) | |
3965 | { | |
3966 | return htab_hash_string (((const struct module_htab_entry *)x)->name); | |
3967 | } | |
3968 | ||
3969 | static int | |
3970 | module_htab_eq (const void *x1, const void *x2) | |
3971 | { | |
3972 | return strcmp ((((const struct module_htab_entry *)x1)->name), | |
3973 | (const char *)x2) == 0; | |
3974 | } | |
3975 | ||
3976 | /* Hash and equality functions for module_htab's decls. */ | |
3977 | ||
3978 | static hashval_t | |
3979 | module_htab_decls_hash (const void *x) | |
3980 | { | |
3981 | const_tree t = (const_tree) x; | |
3982 | const_tree n = DECL_NAME (t); | |
3983 | if (n == NULL_TREE) | |
3984 | n = TYPE_NAME (TREE_TYPE (t)); | |
afdda4b4 | 3985 | return htab_hash_string (IDENTIFIER_POINTER (n)); |
a64f5186 JJ |
3986 | } |
3987 | ||
3988 | static int | |
3989 | module_htab_decls_eq (const void *x1, const void *x2) | |
3990 | { | |
3991 | const_tree t1 = (const_tree) x1; | |
3992 | const_tree n1 = DECL_NAME (t1); | |
3993 | if (n1 == NULL_TREE) | |
3994 | n1 = TYPE_NAME (TREE_TYPE (t1)); | |
3995 | return strcmp (IDENTIFIER_POINTER (n1), (const char *) x2) == 0; | |
3996 | } | |
3997 | ||
3998 | struct module_htab_entry * | |
3999 | gfc_find_module (const char *name) | |
4000 | { | |
4001 | void **slot; | |
4002 | ||
4003 | if (! module_htab) | |
4004 | module_htab = htab_create_ggc (10, module_htab_do_hash, | |
4005 | module_htab_eq, NULL); | |
4006 | ||
4007 | slot = htab_find_slot_with_hash (module_htab, name, | |
4008 | htab_hash_string (name), INSERT); | |
4009 | if (*slot == NULL) | |
4010 | { | |
a9429e29 | 4011 | struct module_htab_entry *entry = ggc_alloc_cleared_module_htab_entry (); |
a64f5186 JJ |
4012 | |
4013 | entry->name = gfc_get_string (name); | |
4014 | entry->decls = htab_create_ggc (10, module_htab_decls_hash, | |
4015 | module_htab_decls_eq, NULL); | |
4016 | *slot = (void *) entry; | |
4017 | } | |
4018 | return (struct module_htab_entry *) *slot; | |
4019 | } | |
4020 | ||
4021 | void | |
4022 | gfc_module_add_decl (struct module_htab_entry *entry, tree decl) | |
4023 | { | |
4024 | void **slot; | |
4025 | const char *name; | |
4026 | ||
4027 | if (DECL_NAME (decl)) | |
4028 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
4029 | else | |
4030 | { | |
4031 | gcc_assert (TREE_CODE (decl) == TYPE_DECL); | |
4032 | name = IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))); | |
4033 | } | |
4034 | slot = htab_find_slot_with_hash (entry->decls, name, | |
4035 | htab_hash_string (name), INSERT); | |
4036 | if (*slot == NULL) | |
4037 | *slot = (void *) decl; | |
4038 | } | |
4039 | ||
4040 | static struct module_htab_entry *cur_module; | |
6de9cd9a DN |
4041 | |
4042 | /* Output an initialized decl for a module variable. */ | |
4043 | ||
4044 | static void | |
4045 | gfc_create_module_variable (gfc_symbol * sym) | |
4046 | { | |
4047 | tree decl; | |
6de9cd9a | 4048 | |
1a492601 PT |
4049 | /* Module functions with alternate entries are dealt with later and |
4050 | would get caught by the next condition. */ | |
4051 | if (sym->attr.entry) | |
4052 | return; | |
4053 | ||
a8b3b0b6 CR |
4054 | /* Make sure we convert the types of the derived types from iso_c_binding |
4055 | into (void *). */ | |
4056 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
4057 | && sym->ts.type == BT_DERIVED) | |
4058 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
4059 | ||
a64f5186 JJ |
4060 | if (sym->attr.flavor == FL_DERIVED |
4061 | && sym->backend_decl | |
4062 | && TREE_CODE (sym->backend_decl) == RECORD_TYPE) | |
4063 | { | |
4064 | decl = sym->backend_decl; | |
4065 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
b8849663 | 4066 | |
9fa52231 | 4067 | if (!sym->attr.use_assoc) |
b8849663 PT |
4068 | { |
4069 | gcc_assert (TYPE_CONTEXT (decl) == NULL_TREE | |
4070 | || TYPE_CONTEXT (decl) == sym->ns->proc_name->backend_decl); | |
4071 | gcc_assert (DECL_CONTEXT (TYPE_STUB_DECL (decl)) == NULL_TREE | |
4072 | || DECL_CONTEXT (TYPE_STUB_DECL (decl)) | |
4073 | == sym->ns->proc_name->backend_decl); | |
4074 | } | |
a64f5186 JJ |
4075 | TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl; |
4076 | DECL_CONTEXT (TYPE_STUB_DECL (decl)) = sym->ns->proc_name->backend_decl; | |
4077 | gfc_module_add_decl (cur_module, TYPE_STUB_DECL (decl)); | |
4078 | } | |
4079 | ||
6e0d2de7 JW |
4080 | /* Only output variables, procedure pointers and array valued, |
4081 | or derived type, parameters. */ | |
6de9cd9a | 4082 | if (sym->attr.flavor != FL_VARIABLE |
fdc55763 | 4083 | && !(sym->attr.flavor == FL_PARAMETER |
6e0d2de7 JW |
4084 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) |
4085 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.proc_pointer)) | |
6de9cd9a DN |
4086 | return; |
4087 | ||
a64f5186 JJ |
4088 | if ((sym->attr.in_common || sym->attr.in_equivalence) && sym->backend_decl) |
4089 | { | |
4090 | decl = sym->backend_decl; | |
e5b16755 | 4091 | gcc_assert (DECL_FILE_SCOPE_P (decl)); |
a64f5186 JJ |
4092 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); |
4093 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4094 | gfc_module_add_decl (cur_module, decl); | |
4095 | } | |
4096 | ||
9cbf8b41 TS |
4097 | /* Don't generate variables from other modules. Variables from |
4098 | COMMONs will already have been generated. */ | |
4099 | if (sym->attr.use_assoc || sym->attr.in_common) | |
6de9cd9a DN |
4100 | return; |
4101 | ||
30aabb86 | 4102 | /* Equivalenced variables arrive here after creation. */ |
b95605fb | 4103 | if (sym->backend_decl |
a64f5186 JJ |
4104 | && (sym->equiv_built || sym->attr.in_equivalence)) |
4105 | return; | |
30aabb86 | 4106 | |
80f95228 | 4107 | if (sym->backend_decl && !sym->attr.vtab && !sym->attr.target) |
6de9cd9a DN |
4108 | internal_error ("backend decl for module variable %s already exists", |
4109 | sym->name); | |
4110 | ||
4111 | /* We always want module variables to be created. */ | |
4112 | sym->attr.referenced = 1; | |
4113 | /* Create the decl. */ | |
4114 | decl = gfc_get_symbol_decl (sym); | |
4115 | ||
6de9cd9a DN |
4116 | /* Create the variable. */ |
4117 | pushdecl (decl); | |
a64f5186 JJ |
4118 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); |
4119 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
0e6df31e | 4120 | rest_of_decl_compilation (decl, 1, 0); |
a64f5186 | 4121 | gfc_module_add_decl (cur_module, decl); |
6de9cd9a DN |
4122 | |
4123 | /* Also add length of strings. */ | |
4124 | if (sym->ts.type == BT_CHARACTER) | |
4125 | { | |
4126 | tree length; | |
4127 | ||
bc21d315 | 4128 | length = sym->ts.u.cl->backend_decl; |
9c4174d8 PT |
4129 | gcc_assert (length || sym->attr.proc_pointer); |
4130 | if (length && !INTEGER_CST_P (length)) | |
6de9cd9a DN |
4131 | { |
4132 | pushdecl (length); | |
0e6df31e | 4133 | rest_of_decl_compilation (length, 1, 0); |
6de9cd9a DN |
4134 | } |
4135 | } | |
b8ff4e88 TB |
4136 | |
4137 | if (sym->attr.codimension && !sym->attr.dummy && !sym->attr.allocatable | |
4138 | && sym->attr.referenced && !sym->attr.use_assoc) | |
4139 | has_coarray_vars = true; | |
6de9cd9a DN |
4140 | } |
4141 | ||
9268ba9a | 4142 | /* Emit debug information for USE statements. */ |
a64f5186 JJ |
4143 | |
4144 | static void | |
4145 | gfc_trans_use_stmts (gfc_namespace * ns) | |
4146 | { | |
4147 | gfc_use_list *use_stmt; | |
4148 | for (use_stmt = ns->use_stmts; use_stmt; use_stmt = use_stmt->next) | |
4149 | { | |
4150 | struct module_htab_entry *entry | |
4151 | = gfc_find_module (use_stmt->module_name); | |
4152 | gfc_use_rename *rent; | |
4153 | ||
4154 | if (entry->namespace_decl == NULL) | |
4155 | { | |
4156 | entry->namespace_decl | |
c2255bc4 AH |
4157 | = build_decl (input_location, |
4158 | NAMESPACE_DECL, | |
a64f5186 JJ |
4159 | get_identifier (use_stmt->module_name), |
4160 | void_type_node); | |
4161 | DECL_EXTERNAL (entry->namespace_decl) = 1; | |
4162 | } | |
9268ba9a | 4163 | gfc_set_backend_locus (&use_stmt->where); |
a64f5186 JJ |
4164 | if (!use_stmt->only_flag) |
4165 | (*debug_hooks->imported_module_or_decl) (entry->namespace_decl, | |
4166 | NULL_TREE, | |
4167 | ns->proc_name->backend_decl, | |
4168 | false); | |
4169 | for (rent = use_stmt->rename; rent; rent = rent->next) | |
4170 | { | |
4171 | tree decl, local_name; | |
4172 | void **slot; | |
4173 | ||
4174 | if (rent->op != INTRINSIC_NONE) | |
4175 | continue; | |
4176 | ||
4177 | slot = htab_find_slot_with_hash (entry->decls, rent->use_name, | |
4178 | htab_hash_string (rent->use_name), | |
4179 | INSERT); | |
4180 | if (*slot == NULL) | |
4181 | { | |
4182 | gfc_symtree *st; | |
4183 | ||
4184 | st = gfc_find_symtree (ns->sym_root, | |
4185 | rent->local_name[0] | |
4186 | ? rent->local_name : rent->use_name); | |
c3f34952 TB |
4187 | |
4188 | /* The following can happen if a derived type is renamed. */ | |
4189 | if (!st) | |
4190 | { | |
4191 | char *name; | |
4192 | name = xstrdup (rent->local_name[0] | |
4193 | ? rent->local_name : rent->use_name); | |
4194 | name[0] = (char) TOUPPER ((unsigned char) name[0]); | |
4195 | st = gfc_find_symtree (ns->sym_root, name); | |
4196 | free (name); | |
4197 | gcc_assert (st); | |
4198 | } | |
1151ccc9 PT |
4199 | |
4200 | /* Sometimes, generic interfaces wind up being over-ruled by a | |
4201 | local symbol (see PR41062). */ | |
4202 | if (!st->n.sym->attr.use_assoc) | |
4203 | continue; | |
4204 | ||
9268ba9a JJ |
4205 | if (st->n.sym->backend_decl |
4206 | && DECL_P (st->n.sym->backend_decl) | |
4207 | && st->n.sym->module | |
4208 | && strcmp (st->n.sym->module, use_stmt->module_name) == 0) | |
a64f5186 | 4209 | { |
9268ba9a JJ |
4210 | gcc_assert (DECL_EXTERNAL (entry->namespace_decl) |
4211 | || (TREE_CODE (st->n.sym->backend_decl) | |
4212 | != VAR_DECL)); | |
a64f5186 JJ |
4213 | decl = copy_node (st->n.sym->backend_decl); |
4214 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
4215 | DECL_EXTERNAL (decl) = 1; | |
4216 | DECL_IGNORED_P (decl) = 0; | |
4217 | DECL_INITIAL (decl) = NULL_TREE; | |
4218 | } | |
4219 | else | |
4220 | { | |
4221 | *slot = error_mark_node; | |
4222 | htab_clear_slot (entry->decls, slot); | |
4223 | continue; | |
4224 | } | |
4225 | *slot = decl; | |
4226 | } | |
4227 | decl = (tree) *slot; | |
4228 | if (rent->local_name[0]) | |
4229 | local_name = get_identifier (rent->local_name); | |
4230 | else | |
4231 | local_name = NULL_TREE; | |
9268ba9a | 4232 | gfc_set_backend_locus (&rent->where); |
a64f5186 JJ |
4233 | (*debug_hooks->imported_module_or_decl) (decl, local_name, |
4234 | ns->proc_name->backend_decl, | |
4235 | !use_stmt->only_flag); | |
4236 | } | |
4237 | } | |
6de9cd9a DN |
4238 | } |
4239 | ||
9268ba9a | 4240 | |
bd11e37d JJ |
4241 | /* Return true if expr is a constant initializer that gfc_conv_initializer |
4242 | will handle. */ | |
4243 | ||
4244 | static bool | |
4245 | check_constant_initializer (gfc_expr *expr, gfc_typespec *ts, bool array, | |
4246 | bool pointer) | |
4247 | { | |
4248 | gfc_constructor *c; | |
4249 | gfc_component *cm; | |
4250 | ||
4251 | if (pointer) | |
4252 | return true; | |
4253 | else if (array) | |
4254 | { | |
4255 | if (expr->expr_type == EXPR_CONSTANT || expr->expr_type == EXPR_NULL) | |
4256 | return true; | |
4257 | else if (expr->expr_type == EXPR_STRUCTURE) | |
4258 | return check_constant_initializer (expr, ts, false, false); | |
4259 | else if (expr->expr_type != EXPR_ARRAY) | |
4260 | return false; | |
b7e75771 JD |
4261 | for (c = gfc_constructor_first (expr->value.constructor); |
4262 | c; c = gfc_constructor_next (c)) | |
bd11e37d JJ |
4263 | { |
4264 | if (c->iterator) | |
4265 | return false; | |
4266 | if (c->expr->expr_type == EXPR_STRUCTURE) | |
4267 | { | |
4268 | if (!check_constant_initializer (c->expr, ts, false, false)) | |
4269 | return false; | |
4270 | } | |
4271 | else if (c->expr->expr_type != EXPR_CONSTANT) | |
4272 | return false; | |
4273 | } | |
4274 | return true; | |
4275 | } | |
4276 | else switch (ts->type) | |
4277 | { | |
4278 | case BT_DERIVED: | |
4279 | if (expr->expr_type != EXPR_STRUCTURE) | |
4280 | return false; | |
bc21d315 | 4281 | cm = expr->ts.u.derived->components; |
b7e75771 JD |
4282 | for (c = gfc_constructor_first (expr->value.constructor); |
4283 | c; c = gfc_constructor_next (c), cm = cm->next) | |
bd11e37d JJ |
4284 | { |
4285 | if (!c->expr || cm->attr.allocatable) | |
4286 | continue; | |
4287 | if (!check_constant_initializer (c->expr, &cm->ts, | |
4288 | cm->attr.dimension, | |
4289 | cm->attr.pointer)) | |
4290 | return false; | |
4291 | } | |
4292 | return true; | |
4293 | default: | |
4294 | return expr->expr_type == EXPR_CONSTANT; | |
4295 | } | |
4296 | } | |
4297 | ||
4298 | /* Emit debug info for parameters and unreferenced variables with | |
4299 | initializers. */ | |
4300 | ||
4301 | static void | |
4302 | gfc_emit_parameter_debug_info (gfc_symbol *sym) | |
4303 | { | |
4304 | tree decl; | |
4305 | ||
4306 | if (sym->attr.flavor != FL_PARAMETER | |
4307 | && (sym->attr.flavor != FL_VARIABLE || sym->attr.referenced)) | |
4308 | return; | |
4309 | ||
4310 | if (sym->backend_decl != NULL | |
4311 | || sym->value == NULL | |
4312 | || sym->attr.use_assoc | |
4313 | || sym->attr.dummy | |
4314 | || sym->attr.result | |
4315 | || sym->attr.function | |
4316 | || sym->attr.intrinsic | |
4317 | || sym->attr.pointer | |
4318 | || sym->attr.allocatable | |
4319 | || sym->attr.cray_pointee | |
4320 | || sym->attr.threadprivate | |
4321 | || sym->attr.is_bind_c | |
4322 | || sym->attr.subref_array_pointer | |
4323 | || sym->attr.assign) | |
4324 | return; | |
4325 | ||
4326 | if (sym->ts.type == BT_CHARACTER) | |
4327 | { | |
bc21d315 JW |
4328 | gfc_conv_const_charlen (sym->ts.u.cl); |
4329 | if (sym->ts.u.cl->backend_decl == NULL | |
4330 | || TREE_CODE (sym->ts.u.cl->backend_decl) != INTEGER_CST) | |
bd11e37d JJ |
4331 | return; |
4332 | } | |
bc21d315 | 4333 | else if (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
bd11e37d JJ |
4334 | return; |
4335 | ||
4336 | if (sym->as) | |
4337 | { | |
4338 | int n; | |
4339 | ||
4340 | if (sym->as->type != AS_EXPLICIT) | |
4341 | return; | |
4342 | for (n = 0; n < sym->as->rank; n++) | |
4343 | if (sym->as->lower[n]->expr_type != EXPR_CONSTANT | |
4344 | || sym->as->upper[n] == NULL | |
4345 | || sym->as->upper[n]->expr_type != EXPR_CONSTANT) | |
4346 | return; | |
4347 | } | |
4348 | ||
4349 | if (!check_constant_initializer (sym->value, &sym->ts, | |
4350 | sym->attr.dimension, false)) | |
4351 | return; | |
4352 | ||
b8ff4e88 TB |
4353 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && sym->attr.codimension) |
4354 | return; | |
4355 | ||
bd11e37d | 4356 | /* Create the decl for the variable or constant. */ |
c2255bc4 AH |
4357 | decl = build_decl (input_location, |
4358 | sym->attr.flavor == FL_PARAMETER ? CONST_DECL : VAR_DECL, | |
bd11e37d JJ |
4359 | gfc_sym_identifier (sym), gfc_sym_type (sym)); |
4360 | if (sym->attr.flavor == FL_PARAMETER) | |
4361 | TREE_READONLY (decl) = 1; | |
4362 | gfc_set_decl_location (decl, &sym->declared_at); | |
4363 | if (sym->attr.dimension) | |
4364 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
4365 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4366 | TREE_STATIC (decl) = 1; | |
4367 | TREE_USED (decl) = 1; | |
4368 | if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
4369 | TREE_PUBLIC (decl) = 1; | |
1d0134b3 JW |
4370 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
4371 | TREE_TYPE (decl), | |
4372 | sym->attr.dimension, | |
4373 | false, false); | |
bd11e37d JJ |
4374 | debug_hooks->global_decl (decl); |
4375 | } | |
4376 | ||
b8ff4e88 TB |
4377 | |
4378 | static void | |
4379 | generate_coarray_sym_init (gfc_symbol *sym) | |
4380 | { | |
4381 | tree tmp, size, decl, token; | |
4382 | ||
4383 | if (sym->attr.dummy || sym->attr.allocatable || !sym->attr.codimension | |
8b704316 | 4384 | || sym->attr.use_assoc || !sym->attr.referenced) |
b8ff4e88 TB |
4385 | return; |
4386 | ||
4387 | decl = sym->backend_decl; | |
4388 | TREE_USED(decl) = 1; | |
4389 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (decl))); | |
4390 | ||
4391 | /* FIXME: Workaround for PR middle-end/49106, cf. also PR middle-end/49108 | |
4392 | to make sure the variable is not optimized away. */ | |
4393 | DECL_PRESERVE_P (DECL_CONTEXT (decl)) = 1; | |
4394 | ||
4395 | size = TYPE_SIZE_UNIT (gfc_get_element_type (TREE_TYPE (decl))); | |
4396 | ||
8b704316 | 4397 | /* Ensure that we do not have size=0 for zero-sized arrays. */ |
107a9bc9 TB |
4398 | size = fold_build2_loc (input_location, MAX_EXPR, size_type_node, |
4399 | fold_convert (size_type_node, size), | |
4400 | build_int_cst (size_type_node, 1)); | |
4401 | ||
b8ff4e88 TB |
4402 | if (GFC_TYPE_ARRAY_RANK (TREE_TYPE (decl))) |
4403 | { | |
4404 | tmp = GFC_TYPE_ARRAY_SIZE (TREE_TYPE (decl)); | |
4405 | size = fold_build2_loc (input_location, MULT_EXPR, size_type_node, | |
107a9bc9 | 4406 | fold_convert (size_type_node, tmp), size); |
b8ff4e88 TB |
4407 | } |
4408 | ||
4409 | gcc_assert (GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE (decl)) != NULL_TREE); | |
4410 | token = gfc_build_addr_expr (ppvoid_type_node, | |
4411 | GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE(decl))); | |
4412 | ||
4413 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_register, 6, size, | |
ea6363a3 | 4414 | build_int_cst (integer_type_node, |
86187d0f | 4415 | GFC_CAF_COARRAY_STATIC), /* type. */ |
b8ff4e88 TB |
4416 | token, null_pointer_node, /* token, stat. */ |
4417 | null_pointer_node, /* errgmsg, errmsg_len. */ | |
4418 | build_int_cst (integer_type_node, 0)); | |
8b704316 | 4419 | |
b8ff4e88 TB |
4420 | gfc_add_modify (&caf_init_block, decl, fold_convert (TREE_TYPE (decl), tmp)); |
4421 | ||
4422 | ||
4423 | /* Handle "static" initializer. */ | |
4424 | if (sym->value) | |
4425 | { | |
4426 | sym->attr.pointer = 1; | |
4427 | tmp = gfc_trans_assignment (gfc_lval_expr_from_sym (sym), sym->value, | |
4428 | true, false); | |
4429 | sym->attr.pointer = 0; | |
4430 | gfc_add_expr_to_block (&caf_init_block, tmp); | |
4431 | } | |
4432 | } | |
4433 | ||
4434 | ||
4435 | /* Generate constructor function to initialize static, nonallocatable | |
4436 | coarrays. */ | |
4437 | ||
4438 | static void | |
4439 | generate_coarray_init (gfc_namespace * ns __attribute((unused))) | |
4440 | { | |
4441 | tree fndecl, tmp, decl, save_fn_decl; | |
4442 | ||
4443 | save_fn_decl = current_function_decl; | |
4444 | push_function_context (); | |
4445 | ||
4446 | tmp = build_function_type_list (void_type_node, NULL_TREE); | |
4447 | fndecl = build_decl (input_location, FUNCTION_DECL, | |
4448 | create_tmp_var_name ("_caf_init"), tmp); | |
4449 | ||
4450 | DECL_STATIC_CONSTRUCTOR (fndecl) = 1; | |
4451 | SET_DECL_INIT_PRIORITY (fndecl, DEFAULT_INIT_PRIORITY); | |
4452 | ||
4453 | decl = build_decl (input_location, RESULT_DECL, NULL_TREE, void_type_node); | |
4454 | DECL_ARTIFICIAL (decl) = 1; | |
4455 | DECL_IGNORED_P (decl) = 1; | |
4456 | DECL_CONTEXT (decl) = fndecl; | |
4457 | DECL_RESULT (fndecl) = decl; | |
4458 | ||
4459 | pushdecl (fndecl); | |
4460 | current_function_decl = fndecl; | |
4461 | announce_function (fndecl); | |
4462 | ||
4463 | rest_of_decl_compilation (fndecl, 0, 0); | |
4464 | make_decl_rtl (fndecl); | |
b6b27e98 | 4465 | allocate_struct_function (fndecl, false); |
b8ff4e88 | 4466 | |
87a60f68 | 4467 | pushlevel (); |
b8ff4e88 TB |
4468 | gfc_init_block (&caf_init_block); |
4469 | ||
4470 | gfc_traverse_ns (ns, generate_coarray_sym_init); | |
4471 | ||
4472 | DECL_SAVED_TREE (fndecl) = gfc_finish_block (&caf_init_block); | |
4473 | decl = getdecls (); | |
4474 | ||
87a60f68 | 4475 | poplevel (1, 1); |
b8ff4e88 TB |
4476 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; |
4477 | ||
4478 | DECL_SAVED_TREE (fndecl) | |
4479 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
4480 | DECL_INITIAL (fndecl)); | |
4481 | dump_function (TDI_original, fndecl); | |
4482 | ||
4483 | cfun->function_end_locus = input_location; | |
4484 | set_cfun (NULL); | |
4485 | ||
4486 | if (decl_function_context (fndecl)) | |
4487 | (void) cgraph_create_node (fndecl); | |
4488 | else | |
4489 | cgraph_finalize_function (fndecl, true); | |
4490 | ||
4491 | pop_function_context (); | |
4492 | current_function_decl = save_fn_decl; | |
4493 | } | |
4494 | ||
4495 | ||
9268ba9a JJ |
4496 | /* Generate all the required code for module variables. */ |
4497 | ||
4498 | void | |
4499 | gfc_generate_module_vars (gfc_namespace * ns) | |
4500 | { | |
4501 | module_namespace = ns; | |
4502 | cur_module = gfc_find_module (ns->proc_name->name); | |
4503 | ||
4504 | /* Check if the frontend left the namespace in a reasonable state. */ | |
4505 | gcc_assert (ns->proc_name && !ns->proc_name->tlink); | |
4506 | ||
4507 | /* Generate COMMON blocks. */ | |
4508 | gfc_trans_common (ns); | |
4509 | ||
b8ff4e88 TB |
4510 | has_coarray_vars = false; |
4511 | ||
9268ba9a JJ |
4512 | /* Create decls for all the module variables. */ |
4513 | gfc_traverse_ns (ns, gfc_create_module_variable); | |
4514 | ||
b8ff4e88 TB |
4515 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
4516 | generate_coarray_init (ns); | |
4517 | ||
9268ba9a JJ |
4518 | cur_module = NULL; |
4519 | ||
4520 | gfc_trans_use_stmts (ns); | |
bd11e37d | 4521 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
9268ba9a JJ |
4522 | } |
4523 | ||
4524 | ||
6de9cd9a DN |
4525 | static void |
4526 | gfc_generate_contained_functions (gfc_namespace * parent) | |
4527 | { | |
4528 | gfc_namespace *ns; | |
4529 | ||
4530 | /* We create all the prototypes before generating any code. */ | |
4531 | for (ns = parent->contained; ns; ns = ns->sibling) | |
4532 | { | |
4533 | /* Skip namespaces from used modules. */ | |
4534 | if (ns->parent != parent) | |
4535 | continue; | |
4536 | ||
fb55ca75 | 4537 | gfc_create_function_decl (ns, false); |
6de9cd9a DN |
4538 | } |
4539 | ||
4540 | for (ns = parent->contained; ns; ns = ns->sibling) | |
4541 | { | |
4542 | /* Skip namespaces from used modules. */ | |
4543 | if (ns->parent != parent) | |
4544 | continue; | |
4545 | ||
4546 | gfc_generate_function_code (ns); | |
4547 | } | |
4548 | } | |
4549 | ||
4550 | ||
3e978d30 PT |
4551 | /* Drill down through expressions for the array specification bounds and |
4552 | character length calling generate_local_decl for all those variables | |
4553 | that have not already been declared. */ | |
4554 | ||
4555 | static void | |
4556 | generate_local_decl (gfc_symbol *); | |
4557 | ||
908a2235 | 4558 | /* Traverse expr, marking all EXPR_VARIABLE symbols referenced. */ |
3e978d30 | 4559 | |
908a2235 PT |
4560 | static bool |
4561 | expr_decls (gfc_expr *e, gfc_symbol *sym, | |
4562 | int *f ATTRIBUTE_UNUSED) | |
4563 | { | |
4564 | if (e->expr_type != EXPR_VARIABLE | |
4565 | || sym == e->symtree->n.sym | |
3e978d30 PT |
4566 | || e->symtree->n.sym->mark |
4567 | || e->symtree->n.sym->ns != sym->ns) | |
908a2235 | 4568 | return false; |
3e978d30 | 4569 | |
908a2235 PT |
4570 | generate_local_decl (e->symtree->n.sym); |
4571 | return false; | |
4572 | } | |
3e978d30 | 4573 | |
908a2235 PT |
4574 | static void |
4575 | generate_expr_decls (gfc_symbol *sym, gfc_expr *e) | |
4576 | { | |
4577 | gfc_traverse_expr (e, sym, expr_decls, 0); | |
3e978d30 PT |
4578 | } |
4579 | ||
4580 | ||
66e4ab31 | 4581 | /* Check for dependencies in the character length and array spec. */ |
3e978d30 PT |
4582 | |
4583 | static void | |
4584 | generate_dependency_declarations (gfc_symbol *sym) | |
4585 | { | |
4586 | int i; | |
4587 | ||
4588 | if (sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
4589 | && sym->ts.u.cl |
4590 | && sym->ts.u.cl->length | |
4591 | && sym->ts.u.cl->length->expr_type != EXPR_CONSTANT) | |
4592 | generate_expr_decls (sym, sym->ts.u.cl->length); | |
3e978d30 PT |
4593 | |
4594 | if (sym->as && sym->as->rank) | |
4595 | { | |
4596 | for (i = 0; i < sym->as->rank; i++) | |
4597 | { | |
4598 | generate_expr_decls (sym, sym->as->lower[i]); | |
4599 | generate_expr_decls (sym, sym->as->upper[i]); | |
4600 | } | |
4601 | } | |
4602 | } | |
4603 | ||
4604 | ||
6de9cd9a DN |
4605 | /* Generate decls for all local variables. We do this to ensure correct |
4606 | handling of expressions which only appear in the specification of | |
4607 | other functions. */ | |
4608 | ||
4609 | static void | |
4610 | generate_local_decl (gfc_symbol * sym) | |
4611 | { | |
4612 | if (sym->attr.flavor == FL_VARIABLE) | |
4613 | { | |
b8ff4e88 TB |
4614 | if (sym->attr.codimension && !sym->attr.dummy && !sym->attr.allocatable |
4615 | && sym->attr.referenced && !sym->attr.use_assoc) | |
4616 | has_coarray_vars = true; | |
4617 | ||
3e978d30 | 4618 | if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master) |
2c69d527 | 4619 | generate_dependency_declarations (sym); |
3e978d30 | 4620 | |
6de9cd9a | 4621 | if (sym->attr.referenced) |
2c69d527 | 4622 | gfc_get_symbol_decl (sym); |
4ed44ccc DF |
4623 | |
4624 | /* Warnings for unused dummy arguments. */ | |
4625 | else if (sym->attr.dummy) | |
ad6d42e1 | 4626 | { |
4ed44ccc DF |
4627 | /* INTENT(out) dummy arguments are likely meant to be set. */ |
4628 | if (gfc_option.warn_unused_dummy_argument | |
4629 | && sym->attr.intent == INTENT_OUT) | |
4630 | { | |
4631 | if (sym->ts.type != BT_DERIVED) | |
4632 | gfc_warning ("Dummy argument '%s' at %L was declared " | |
4633 | "INTENT(OUT) but was not set", sym->name, | |
4634 | &sym->declared_at); | |
4635 | else if (!gfc_has_default_initializer (sym->ts.u.derived)) | |
4636 | gfc_warning ("Derived-type dummy argument '%s' at %L was " | |
4637 | "declared INTENT(OUT) but was not set and " | |
4638 | "does not have a default initializer", | |
4639 | sym->name, &sym->declared_at); | |
fba5ace0 TB |
4640 | if (sym->backend_decl != NULL_TREE) |
4641 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4ed44ccc DF |
4642 | } |
4643 | else if (gfc_option.warn_unused_dummy_argument) | |
fba5ace0 TB |
4644 | { |
4645 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, | |
4ed44ccc | 4646 | &sym->declared_at); |
fba5ace0 TB |
4647 | if (sym->backend_decl != NULL_TREE) |
4648 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4649 | } | |
ad6d42e1 | 4650 | } |
4ed44ccc | 4651 | |
f8d0aee5 | 4652 | /* Warn for unused variables, but not if they're inside a common |
ecdbf2cd | 4653 | block or a namelist. */ |
ce738b86 | 4654 | else if (warn_unused_variable |
ecdbf2cd | 4655 | && !(sym->attr.in_common || sym->mark || sym->attr.in_namelist)) |
fba5ace0 | 4656 | { |
ecdbf2cd JW |
4657 | if (sym->attr.use_only) |
4658 | { | |
4659 | gfc_warning ("Unused module variable '%s' which has been " | |
4660 | "explicitly imported at %L", sym->name, | |
4661 | &sym->declared_at); | |
4662 | if (sym->backend_decl != NULL_TREE) | |
4663 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4664 | } | |
4665 | else if (!sym->attr.use_assoc) | |
4666 | { | |
4667 | gfc_warning ("Unused variable '%s' declared at %L", | |
4668 | sym->name, &sym->declared_at); | |
4669 | if (sym->backend_decl != NULL_TREE) | |
4670 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4671 | } | |
fba5ace0 | 4672 | } |
2c69d527 | 4673 | |
417ab240 JJ |
4674 | /* For variable length CHARACTER parameters, the PARM_DECL already |
4675 | references the length variable, so force gfc_get_symbol_decl | |
4676 | even when not referenced. If optimize > 0, it will be optimized | |
4677 | away anyway. But do this only after emitting -Wunused-parameter | |
4678 | warning if requested. */ | |
2c69d527 PT |
4679 | if (sym->attr.dummy && !sym->attr.referenced |
4680 | && sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
4681 | && sym->ts.u.cl->backend_decl != NULL |
4682 | && TREE_CODE (sym->ts.u.cl->backend_decl) == VAR_DECL) | |
417ab240 JJ |
4683 | { |
4684 | sym->attr.referenced = 1; | |
4685 | gfc_get_symbol_decl (sym); | |
4686 | } | |
534fd534 | 4687 | |
5af2eace PT |
4688 | /* INTENT(out) dummy arguments and result variables with allocatable |
4689 | components are reset by default and need to be set referenced to | |
4690 | generate the code for nullification and automatic lengths. */ | |
4691 | if (!sym->attr.referenced | |
2c69d527 | 4692 | && sym->ts.type == BT_DERIVED |
bc21d315 | 4693 | && sym->ts.u.derived->attr.alloc_comp |
758e12af | 4694 | && !sym->attr.pointer |
5af2eace PT |
4695 | && ((sym->attr.dummy && sym->attr.intent == INTENT_OUT) |
4696 | || | |
4697 | (sym->attr.result && sym != sym->result))) | |
2c69d527 PT |
4698 | { |
4699 | sym->attr.referenced = 1; | |
4700 | gfc_get_symbol_decl (sym); | |
4701 | } | |
4702 | ||
06c7153f TB |
4703 | /* Check for dependencies in the array specification and string |
4704 | length, adding the necessary declarations to the function. We | |
4705 | mark the symbol now, as well as in traverse_ns, to prevent | |
4706 | getting stuck in a circular dependency. */ | |
4707 | sym->mark = 1; | |
6de9cd9a | 4708 | } |
33c0c5e9 DF |
4709 | else if (sym->attr.flavor == FL_PARAMETER) |
4710 | { | |
d92693b4 | 4711 | if (warn_unused_parameter |
dbad8e71 TB |
4712 | && !sym->attr.referenced) |
4713 | { | |
4714 | if (!sym->attr.use_assoc) | |
4715 | gfc_warning ("Unused parameter '%s' declared at %L", sym->name, | |
4716 | &sym->declared_at); | |
4717 | else if (sym->attr.use_only) | |
4718 | gfc_warning ("Unused parameter '%s' which has been explicitly " | |
4719 | "imported at %L", sym->name, &sym->declared_at); | |
4720 | } | |
33c0c5e9 | 4721 | } |
766d0c8c DF |
4722 | else if (sym->attr.flavor == FL_PROCEDURE) |
4723 | { | |
4724 | /* TODO: move to the appropriate place in resolve.c. */ | |
4725 | if (warn_return_type | |
4726 | && sym->attr.function | |
4727 | && sym->result | |
4728 | && sym != sym->result | |
4729 | && !sym->result->attr.referenced | |
4730 | && !sym->attr.use_assoc | |
4731 | && sym->attr.if_source != IFSRC_IFBODY) | |
4732 | { | |
4733 | gfc_warning ("Return value '%s' of function '%s' declared at " | |
4734 | "%L not set", sym->result->name, sym->name, | |
4735 | &sym->result->declared_at); | |
4736 | ||
4737 | /* Prevents "Unused variable" warning for RESULT variables. */ | |
06c7153f | 4738 | sym->result->mark = 1; |
766d0c8c DF |
4739 | } |
4740 | } | |
a8b3b0b6 | 4741 | |
8b16d231 CR |
4742 | if (sym->attr.dummy == 1) |
4743 | { | |
4744 | /* Modify the tree type for scalar character dummy arguments of bind(c) | |
4745 | procedures if they are passed by value. The tree type for them will | |
4746 | be promoted to INTEGER_TYPE for the middle end, which appears to be | |
4747 | what C would do with characters passed by-value. The value attribute | |
4748 | implies the dummy is a scalar. */ | |
4749 | if (sym->attr.value == 1 && sym->backend_decl != NULL | |
4750 | && sym->ts.type == BT_CHARACTER && sym->ts.is_c_interop | |
4751 | && sym->ns->proc_name != NULL && sym->ns->proc_name->attr.is_bind_c) | |
e032c2a1 | 4752 | gfc_conv_scalar_char_value (sym, NULL, NULL); |
d20597cb TK |
4753 | |
4754 | /* Unused procedure passed as dummy argument. */ | |
4755 | if (sym->attr.flavor == FL_PROCEDURE) | |
4756 | { | |
4757 | if (!sym->attr.referenced) | |
4758 | { | |
4759 | if (gfc_option.warn_unused_dummy_argument) | |
4760 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, | |
8b704316 | 4761 | &sym->declared_at); |
d20597cb TK |
4762 | } |
4763 | ||
4764 | /* Silence bogus "unused parameter" warnings from the | |
4765 | middle end. */ | |
4766 | if (sym->backend_decl != NULL_TREE) | |
4767 | TREE_NO_WARNING (sym->backend_decl) = 1; | |
4768 | } | |
8b16d231 CR |
4769 | } |
4770 | ||
a8b3b0b6 CR |
4771 | /* Make sure we convert the types of the derived types from iso_c_binding |
4772 | into (void *). */ | |
4773 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
4774 | && sym->ts.type == BT_DERIVED) | |
4775 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
6de9cd9a DN |
4776 | } |
4777 | ||
4778 | static void | |
4779 | generate_local_vars (gfc_namespace * ns) | |
4780 | { | |
4781 | gfc_traverse_ns (ns, generate_local_decl); | |
4782 | } | |
4783 | ||
4784 | ||
3d79abbd PB |
4785 | /* Generate a switch statement to jump to the correct entry point. Also |
4786 | creates the label decls for the entry points. */ | |
6de9cd9a | 4787 | |
3d79abbd PB |
4788 | static tree |
4789 | gfc_trans_entry_master_switch (gfc_entry_list * el) | |
6de9cd9a | 4790 | { |
3d79abbd PB |
4791 | stmtblock_t block; |
4792 | tree label; | |
4793 | tree tmp; | |
4794 | tree val; | |
6de9cd9a | 4795 | |
3d79abbd PB |
4796 | gfc_init_block (&block); |
4797 | for (; el; el = el->next) | |
4798 | { | |
4799 | /* Add the case label. */ | |
c006df4e | 4800 | label = gfc_build_label_decl (NULL_TREE); |
7d60be94 | 4801 | val = build_int_cst (gfc_array_index_type, el->id); |
3d528853 | 4802 | tmp = build_case_label (val, NULL_TREE, label); |
3d79abbd | 4803 | gfc_add_expr_to_block (&block, tmp); |
7389bce6 | 4804 | |
3d79abbd PB |
4805 | /* And jump to the actual entry point. */ |
4806 | label = gfc_build_label_decl (NULL_TREE); | |
3d79abbd PB |
4807 | tmp = build1_v (GOTO_EXPR, label); |
4808 | gfc_add_expr_to_block (&block, tmp); | |
4809 | ||
4810 | /* Save the label decl. */ | |
4811 | el->label = label; | |
4812 | } | |
4813 | tmp = gfc_finish_block (&block); | |
4814 | /* The first argument selects the entry point. */ | |
4815 | val = DECL_ARGUMENTS (current_function_decl); | |
0cd2402d SB |
4816 | tmp = fold_build3_loc (input_location, SWITCH_EXPR, NULL_TREE, |
4817 | val, tmp, NULL_TREE); | |
3d79abbd | 4818 | return tmp; |
6de9cd9a DN |
4819 | } |
4820 | ||
44de5aeb | 4821 | |
cadb8f42 DK |
4822 | /* Add code to string lengths of actual arguments passed to a function against |
4823 | the expected lengths of the dummy arguments. */ | |
4824 | ||
4825 | static void | |
4826 | add_argument_checking (stmtblock_t *block, gfc_symbol *sym) | |
4827 | { | |
4828 | gfc_formal_arglist *formal; | |
4829 | ||
4cbc9039 | 4830 | for (formal = gfc_sym_get_dummy_args (sym); formal; formal = formal->next) |
be94c034 | 4831 | if (formal->sym && formal->sym->ts.type == BT_CHARACTER |
9be1227b | 4832 | && !formal->sym->ts.deferred) |
cadb8f42 DK |
4833 | { |
4834 | enum tree_code comparison; | |
4835 | tree cond; | |
4836 | tree argname; | |
4837 | gfc_symbol *fsym; | |
4838 | gfc_charlen *cl; | |
4839 | const char *message; | |
4840 | ||
4841 | fsym = formal->sym; | |
bc21d315 | 4842 | cl = fsym->ts.u.cl; |
cadb8f42 DK |
4843 | |
4844 | gcc_assert (cl); | |
4845 | gcc_assert (cl->passed_length != NULL_TREE); | |
4846 | gcc_assert (cl->backend_decl != NULL_TREE); | |
4847 | ||
4848 | /* For POINTER, ALLOCATABLE and assumed-shape dummy arguments, the | |
4849 | string lengths must match exactly. Otherwise, it is only required | |
cb7a8961 TB |
4850 | that the actual string length is *at least* the expected one. |
4851 | Sequence association allows for a mismatch of the string length | |
4852 | if the actual argument is (part of) an array, but only if the | |
4853 | dummy argument is an array. (See "Sequence association" in | |
4854 | Section 12.4.1.4 for F95 and 12.4.1.5 for F2003.) */ | |
be94c034 | 4855 | if (fsym->attr.pointer || fsym->attr.allocatable |
c62c6622 TB |
4856 | || (fsym->as && (fsym->as->type == AS_ASSUMED_SHAPE |
4857 | || fsym->as->type == AS_ASSUMED_RANK))) | |
cadb8f42 DK |
4858 | { |
4859 | comparison = NE_EXPR; | |
4860 | message = _("Actual string length does not match the declared one" | |
4861 | " for dummy argument '%s' (%ld/%ld)"); | |
4862 | } | |
cb7a8961 TB |
4863 | else if (fsym->as && fsym->as->rank != 0) |
4864 | continue; | |
cadb8f42 DK |
4865 | else |
4866 | { | |
4867 | comparison = LT_EXPR; | |
4868 | message = _("Actual string length is shorter than the declared one" | |
4869 | " for dummy argument '%s' (%ld/%ld)"); | |
4870 | } | |
4871 | ||
4872 | /* Build the condition. For optional arguments, an actual length | |
4873 | of 0 is also acceptable if the associated string is NULL, which | |
4874 | means the argument was not passed. */ | |
bc98ed60 TB |
4875 | cond = fold_build2_loc (input_location, comparison, boolean_type_node, |
4876 | cl->passed_length, cl->backend_decl); | |
cadb8f42 DK |
4877 | if (fsym->attr.optional) |
4878 | { | |
4879 | tree not_absent; | |
4880 | tree not_0length; | |
4881 | tree absent_failed; | |
4882 | ||
bc98ed60 TB |
4883 | not_0length = fold_build2_loc (input_location, NE_EXPR, |
4884 | boolean_type_node, | |
4885 | cl->passed_length, | |
e8160c9a | 4886 | build_zero_cst (gfc_charlen_type_node)); |
702a738b PT |
4887 | /* The symbol needs to be referenced for gfc_get_symbol_decl. */ |
4888 | fsym->attr.referenced = 1; | |
4889 | not_absent = gfc_conv_expr_present (fsym); | |
cadb8f42 | 4890 | |
bc98ed60 TB |
4891 | absent_failed = fold_build2_loc (input_location, TRUTH_OR_EXPR, |
4892 | boolean_type_node, not_0length, | |
4893 | not_absent); | |
cadb8f42 | 4894 | |
bc98ed60 TB |
4895 | cond = fold_build2_loc (input_location, TRUTH_AND_EXPR, |
4896 | boolean_type_node, cond, absent_failed); | |
cadb8f42 DK |
4897 | } |
4898 | ||
4899 | /* Build the runtime check. */ | |
4900 | argname = gfc_build_cstring_const (fsym->name); | |
4901 | argname = gfc_build_addr_expr (pchar_type_node, argname); | |
4902 | gfc_trans_runtime_check (true, false, cond, block, &fsym->declared_at, | |
4903 | message, argname, | |
4904 | fold_convert (long_integer_type_node, | |
4905 | cl->passed_length), | |
4906 | fold_convert (long_integer_type_node, | |
4907 | cl->backend_decl)); | |
4908 | } | |
4909 | } | |
4910 | ||
4911 | ||
6f4d39bb TB |
4912 | /* Generate the _gfortran_caf_this_image and _gfortran_caf_num_images |
4913 | global variables for -fcoarray=lib. They are placed into the translation | |
4914 | unit of the main program. Make sure that in one TU (the one of the main | |
4915 | program), the first call to gfc_init_coarray_decl is done with true. | |
4916 | Otherwise, expect link errors. */ | |
4917 | ||
60386f50 | 4918 | void |
6f4d39bb | 4919 | gfc_init_coarray_decl (bool main_tu) |
60386f50 | 4920 | { |
60386f50 TB |
4921 | if (gfc_option.coarray != GFC_FCOARRAY_LIB) |
4922 | return; | |
4923 | ||
4924 | if (gfort_gvar_caf_this_image || gfort_gvar_caf_num_images) | |
4925 | return; | |
4926 | ||
60386f50 TB |
4927 | push_cfun (cfun); |
4928 | ||
6f4d39bb TB |
4929 | gfort_gvar_caf_this_image |
4930 | = build_decl (input_location, VAR_DECL, | |
4931 | get_identifier (PREFIX("caf_this_image")), | |
4932 | integer_type_node); | |
60386f50 TB |
4933 | DECL_ARTIFICIAL (gfort_gvar_caf_this_image) = 1; |
4934 | TREE_USED (gfort_gvar_caf_this_image) = 1; | |
4935 | TREE_PUBLIC (gfort_gvar_caf_this_image) = 1; | |
6f4d39bb TB |
4936 | TREE_READONLY (gfort_gvar_caf_this_image) = 0; |
4937 | ||
4938 | if (main_tu) | |
4939 | TREE_STATIC (gfort_gvar_caf_this_image) = 1; | |
4940 | else | |
4941 | DECL_EXTERNAL (gfort_gvar_caf_this_image) = 1; | |
4942 | ||
4943 | pushdecl_top_level (gfort_gvar_caf_this_image); | |
60386f50 | 4944 | |
6f4d39bb TB |
4945 | gfort_gvar_caf_num_images |
4946 | = build_decl (input_location, VAR_DECL, | |
4947 | get_identifier (PREFIX("caf_num_images")), | |
4948 | integer_type_node); | |
60386f50 TB |
4949 | DECL_ARTIFICIAL (gfort_gvar_caf_num_images) = 1; |
4950 | TREE_USED (gfort_gvar_caf_num_images) = 1; | |
4951 | TREE_PUBLIC (gfort_gvar_caf_num_images) = 1; | |
6f4d39bb TB |
4952 | TREE_READONLY (gfort_gvar_caf_num_images) = 0; |
4953 | ||
4954 | if (main_tu) | |
4955 | TREE_STATIC (gfort_gvar_caf_num_images) = 1; | |
4956 | else | |
4957 | DECL_EXTERNAL (gfort_gvar_caf_num_images) = 1; | |
4958 | ||
4959 | pushdecl_top_level (gfort_gvar_caf_num_images); | |
60386f50 TB |
4960 | |
4961 | pop_cfun (); | |
60386f50 TB |
4962 | } |
4963 | ||
4964 | ||
092231a8 TB |
4965 | static void |
4966 | create_main_function (tree fndecl) | |
4967 | { | |
86c3c481 | 4968 | tree old_context; |
092231a8 TB |
4969 | tree ftn_main; |
4970 | tree tmp, decl, result_decl, argc, argv, typelist, arglist; | |
4971 | stmtblock_t body; | |
4972 | ||
86c3c481 TB |
4973 | old_context = current_function_decl; |
4974 | ||
4975 | if (old_context) | |
4976 | { | |
4977 | push_function_context (); | |
4978 | saved_parent_function_decls = saved_function_decls; | |
4979 | saved_function_decls = NULL_TREE; | |
4980 | } | |
4981 | ||
092231a8 TB |
4982 | /* main() function must be declared with global scope. */ |
4983 | gcc_assert (current_function_decl == NULL_TREE); | |
4984 | ||
4985 | /* Declare the function. */ | |
4986 | tmp = build_function_type_list (integer_type_node, integer_type_node, | |
4987 | build_pointer_type (pchar_type_node), | |
4988 | NULL_TREE); | |
a7ad6c2d | 4989 | main_identifier_node = get_identifier ("main"); |
c2255bc4 AH |
4990 | ftn_main = build_decl (input_location, FUNCTION_DECL, |
4991 | main_identifier_node, tmp); | |
092231a8 TB |
4992 | DECL_EXTERNAL (ftn_main) = 0; |
4993 | TREE_PUBLIC (ftn_main) = 1; | |
4994 | TREE_STATIC (ftn_main) = 1; | |
4995 | DECL_ATTRIBUTES (ftn_main) | |
4996 | = tree_cons (get_identifier("externally_visible"), NULL_TREE, NULL_TREE); | |
4997 | ||
4998 | /* Setup the result declaration (for "return 0"). */ | |
c2255bc4 AH |
4999 | result_decl = build_decl (input_location, |
5000 | RESULT_DECL, NULL_TREE, integer_type_node); | |
092231a8 TB |
5001 | DECL_ARTIFICIAL (result_decl) = 1; |
5002 | DECL_IGNORED_P (result_decl) = 1; | |
5003 | DECL_CONTEXT (result_decl) = ftn_main; | |
5004 | DECL_RESULT (ftn_main) = result_decl; | |
5005 | ||
5006 | pushdecl (ftn_main); | |
5007 | ||
5008 | /* Get the arguments. */ | |
5009 | ||
5010 | arglist = NULL_TREE; | |
5011 | typelist = TYPE_ARG_TYPES (TREE_TYPE (ftn_main)); | |
5012 | ||
5013 | tmp = TREE_VALUE (typelist); | |
c2255bc4 | 5014 | argc = build_decl (input_location, PARM_DECL, get_identifier ("argc"), tmp); |
092231a8 TB |
5015 | DECL_CONTEXT (argc) = ftn_main; |
5016 | DECL_ARG_TYPE (argc) = TREE_VALUE (typelist); | |
5017 | TREE_READONLY (argc) = 1; | |
5018 | gfc_finish_decl (argc); | |
5019 | arglist = chainon (arglist, argc); | |
5020 | ||
5021 | typelist = TREE_CHAIN (typelist); | |
5022 | tmp = TREE_VALUE (typelist); | |
c2255bc4 | 5023 | argv = build_decl (input_location, PARM_DECL, get_identifier ("argv"), tmp); |
092231a8 TB |
5024 | DECL_CONTEXT (argv) = ftn_main; |
5025 | DECL_ARG_TYPE (argv) = TREE_VALUE (typelist); | |
5026 | TREE_READONLY (argv) = 1; | |
5027 | DECL_BY_REFERENCE (argv) = 1; | |
5028 | gfc_finish_decl (argv); | |
5029 | arglist = chainon (arglist, argv); | |
5030 | ||
5031 | DECL_ARGUMENTS (ftn_main) = arglist; | |
5032 | current_function_decl = ftn_main; | |
5033 | announce_function (ftn_main); | |
5034 | ||
5035 | rest_of_decl_compilation (ftn_main, 1, 0); | |
5036 | make_decl_rtl (ftn_main); | |
b6b27e98 | 5037 | allocate_struct_function (ftn_main, false); |
87a60f68 | 5038 | pushlevel (); |
092231a8 TB |
5039 | |
5040 | gfc_init_block (&body); | |
5041 | ||
5042 | /* Call some libgfortran initialization routines, call then MAIN__(). */ | |
5043 | ||
60386f50 TB |
5044 | /* Call _gfortran_caf_init (*argc, ***argv, *this_image, *num_images). */ |
5045 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
5046 | { | |
5047 | tree pint_type, pppchar_type; | |
5048 | pint_type = build_pointer_type (integer_type_node); | |
5049 | pppchar_type | |
5050 | = build_pointer_type (build_pointer_type (pchar_type_node)); | |
5051 | ||
6f4d39bb | 5052 | gfc_init_coarray_decl (true); |
60386f50 TB |
5053 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_init, 4, |
5054 | gfc_build_addr_expr (pint_type, argc), | |
5055 | gfc_build_addr_expr (pppchar_type, argv), | |
5056 | gfc_build_addr_expr (pint_type, gfort_gvar_caf_this_image), | |
5057 | gfc_build_addr_expr (pint_type, gfort_gvar_caf_num_images)); | |
5058 | gfc_add_expr_to_block (&body, tmp); | |
5059 | } | |
5060 | ||
092231a8 | 5061 | /* Call _gfortran_set_args (argc, argv). */ |
86c3c481 TB |
5062 | TREE_USED (argc) = 1; |
5063 | TREE_USED (argv) = 1; | |
db3927fb AH |
5064 | tmp = build_call_expr_loc (input_location, |
5065 | gfor_fndecl_set_args, 2, argc, argv); | |
092231a8 TB |
5066 | gfc_add_expr_to_block (&body, tmp); |
5067 | ||
5068 | /* Add a call to set_options to set up the runtime library Fortran | |
5069 | language standard parameters. */ | |
5070 | { | |
5071 | tree array_type, array, var; | |
9771b263 | 5072 | vec<constructor_elt, va_gc> *v = NULL; |
092231a8 TB |
5073 | |
5074 | /* Passing a new option to the library requires four modifications: | |
5075 | + add it to the tree_cons list below | |
5076 | + change the array size in the call to build_array_type | |
5077 | + change the first argument to the library call | |
5078 | gfor_fndecl_set_options | |
5079 | + modify the library (runtime/compile_options.c)! */ | |
5080 | ||
8748ad99 NF |
5081 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5082 | build_int_cst (integer_type_node, | |
5083 | gfc_option.warn_std)); | |
5084 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5085 | build_int_cst (integer_type_node, | |
5086 | gfc_option.allow_std)); | |
5087 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5088 | build_int_cst (integer_type_node, pedantic)); | |
de8bd142 JB |
5089 | /* TODO: This is the old -fdump-core option, which is unused but |
5090 | passed due to ABI compatibility; remove when bumping the | |
5091 | library ABI. */ | |
8748ad99 NF |
5092 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5093 | build_int_cst (integer_type_node, | |
de8bd142 | 5094 | 0)); |
8748ad99 NF |
5095 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5096 | build_int_cst (integer_type_node, | |
5097 | gfc_option.flag_backtrace)); | |
5098 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5099 | build_int_cst (integer_type_node, | |
5100 | gfc_option.flag_sign_zero)); | |
5101 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5102 | build_int_cst (integer_type_node, | |
5103 | (gfc_option.rtcheck | |
5104 | & GFC_RTCHECK_BOUNDS))); | |
80b91c0b JB |
5105 | /* TODO: This is the -frange-check option, which no longer affects |
5106 | library behavior; when bumping the library ABI this slot can be | |
5107 | reused for something else. As it is the last element in the | |
5108 | array, we can instead leave it out altogether. | |
8748ad99 NF |
5109 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5110 | build_int_cst (integer_type_node, | |
5111 | gfc_option.flag_range_check)); | |
80b91c0b | 5112 | */ |
092231a8 TB |
5113 | |
5114 | array_type = build_array_type (integer_type_node, | |
80b91c0b | 5115 | build_index_type (size_int (6))); |
8748ad99 | 5116 | array = build_constructor (array_type, v); |
092231a8 TB |
5117 | TREE_CONSTANT (array) = 1; |
5118 | TREE_STATIC (array) = 1; | |
5119 | ||
5120 | /* Create a static variable to hold the jump table. */ | |
5121 | var = gfc_create_var (array_type, "options"); | |
5122 | TREE_CONSTANT (var) = 1; | |
5123 | TREE_STATIC (var) = 1; | |
5124 | TREE_READONLY (var) = 1; | |
5125 | DECL_INITIAL (var) = array; | |
5126 | var = gfc_build_addr_expr (build_pointer_type (integer_type_node), var); | |
5127 | ||
db3927fb AH |
5128 | tmp = build_call_expr_loc (input_location, |
5129 | gfor_fndecl_set_options, 2, | |
80b91c0b | 5130 | build_int_cst (integer_type_node, 7), var); |
092231a8 TB |
5131 | gfc_add_expr_to_block (&body, tmp); |
5132 | } | |
5133 | ||
5134 | /* If -ffpe-trap option was provided, add a call to set_fpe so that | |
5135 | the library will raise a FPE when needed. */ | |
5136 | if (gfc_option.fpe != 0) | |
5137 | { | |
db3927fb AH |
5138 | tmp = build_call_expr_loc (input_location, |
5139 | gfor_fndecl_set_fpe, 1, | |
092231a8 TB |
5140 | build_int_cst (integer_type_node, |
5141 | gfc_option.fpe)); | |
5142 | gfc_add_expr_to_block (&body, tmp); | |
5143 | } | |
5144 | ||
5145 | /* If this is the main program and an -fconvert option was provided, | |
5146 | add a call to set_convert. */ | |
5147 | ||
5148 | if (gfc_option.convert != GFC_CONVERT_NATIVE) | |
5149 | { | |
db3927fb AH |
5150 | tmp = build_call_expr_loc (input_location, |
5151 | gfor_fndecl_set_convert, 1, | |
092231a8 TB |
5152 | build_int_cst (integer_type_node, |
5153 | gfc_option.convert)); | |
5154 | gfc_add_expr_to_block (&body, tmp); | |
5155 | } | |
5156 | ||
5157 | /* If this is the main program and an -frecord-marker option was provided, | |
5158 | add a call to set_record_marker. */ | |
5159 | ||
5160 | if (gfc_option.record_marker != 0) | |
5161 | { | |
db3927fb AH |
5162 | tmp = build_call_expr_loc (input_location, |
5163 | gfor_fndecl_set_record_marker, 1, | |
092231a8 TB |
5164 | build_int_cst (integer_type_node, |
5165 | gfc_option.record_marker)); | |
5166 | gfc_add_expr_to_block (&body, tmp); | |
5167 | } | |
5168 | ||
5169 | if (gfc_option.max_subrecord_length != 0) | |
5170 | { | |
db3927fb AH |
5171 | tmp = build_call_expr_loc (input_location, |
5172 | gfor_fndecl_set_max_subrecord_length, 1, | |
092231a8 TB |
5173 | build_int_cst (integer_type_node, |
5174 | gfc_option.max_subrecord_length)); | |
5175 | gfc_add_expr_to_block (&body, tmp); | |
5176 | } | |
5177 | ||
5178 | /* Call MAIN__(). */ | |
db3927fb AH |
5179 | tmp = build_call_expr_loc (input_location, |
5180 | fndecl, 0); | |
092231a8 TB |
5181 | gfc_add_expr_to_block (&body, tmp); |
5182 | ||
86c3c481 TB |
5183 | /* Mark MAIN__ as used. */ |
5184 | TREE_USED (fndecl) = 1; | |
5185 | ||
60386f50 TB |
5186 | /* Coarray: Call _gfortran_caf_finalize(void). */ |
5187 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
8b704316 | 5188 | { |
60386f50 | 5189 | /* Per F2008, 8.5.1 END of the main program implies a |
8b704316 | 5190 | SYNC MEMORY. */ |
e79983f4 | 5191 | tmp = builtin_decl_explicit (BUILT_IN_SYNC_SYNCHRONIZE); |
60386f50 TB |
5192 | tmp = build_call_expr_loc (input_location, tmp, 0); |
5193 | gfc_add_expr_to_block (&body, tmp); | |
5194 | ||
5195 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_finalize, 0); | |
5196 | gfc_add_expr_to_block (&body, tmp); | |
5197 | } | |
5198 | ||
092231a8 | 5199 | /* "return 0". */ |
bc98ed60 TB |
5200 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, integer_type_node, |
5201 | DECL_RESULT (ftn_main), | |
5202 | build_int_cst (integer_type_node, 0)); | |
092231a8 TB |
5203 | tmp = build1_v (RETURN_EXPR, tmp); |
5204 | gfc_add_expr_to_block (&body, tmp); | |
5205 | ||
5206 | ||
5207 | DECL_SAVED_TREE (ftn_main) = gfc_finish_block (&body); | |
5208 | decl = getdecls (); | |
5209 | ||
5210 | /* Finish off this function and send it for code generation. */ | |
87a60f68 | 5211 | poplevel (1, 1); |
092231a8 TB |
5212 | BLOCK_SUPERCONTEXT (DECL_INITIAL (ftn_main)) = ftn_main; |
5213 | ||
5214 | DECL_SAVED_TREE (ftn_main) | |
5215 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (ftn_main), | |
5216 | DECL_INITIAL (ftn_main)); | |
5217 | ||
5218 | /* Output the GENERIC tree. */ | |
5219 | dump_function (TDI_original, ftn_main); | |
5220 | ||
9618fb3c | 5221 | cgraph_finalize_function (ftn_main, true); |
86c3c481 TB |
5222 | |
5223 | if (old_context) | |
5224 | { | |
5225 | pop_function_context (); | |
5226 | saved_function_decls = saved_parent_function_decls; | |
5227 | } | |
5228 | current_function_decl = old_context; | |
092231a8 TB |
5229 | } |
5230 | ||
5231 | ||
d74d8807 DK |
5232 | /* Get the result expression for a procedure. */ |
5233 | ||
5234 | static tree | |
5235 | get_proc_result (gfc_symbol* sym) | |
5236 | { | |
5237 | if (sym->attr.subroutine || sym == sym->result) | |
5238 | { | |
5239 | if (current_fake_result_decl != NULL) | |
5240 | return TREE_VALUE (current_fake_result_decl); | |
5241 | ||
5242 | return NULL_TREE; | |
5243 | } | |
5244 | ||
5245 | return sym->result->backend_decl; | |
5246 | } | |
5247 | ||
5248 | ||
5249 | /* Generate an appropriate return-statement for a procedure. */ | |
5250 | ||
5251 | tree | |
5252 | gfc_generate_return (void) | |
5253 | { | |
5254 | gfc_symbol* sym; | |
5255 | tree result; | |
5256 | tree fndecl; | |
5257 | ||
5258 | sym = current_procedure_symbol; | |
5259 | fndecl = sym->backend_decl; | |
5260 | ||
5261 | if (TREE_TYPE (DECL_RESULT (fndecl)) == void_type_node) | |
5262 | result = NULL_TREE; | |
5263 | else | |
5264 | { | |
5265 | result = get_proc_result (sym); | |
5266 | ||
5267 | /* Set the return value to the dummy result variable. The | |
5268 | types may be different for scalar default REAL functions | |
5269 | with -ff2c, therefore we have to convert. */ | |
5270 | if (result != NULL_TREE) | |
5271 | { | |
5272 | result = convert (TREE_TYPE (DECL_RESULT (fndecl)), result); | |
bc98ed60 TB |
5273 | result = fold_build2_loc (input_location, MODIFY_EXPR, |
5274 | TREE_TYPE (result), DECL_RESULT (fndecl), | |
5275 | result); | |
d74d8807 DK |
5276 | } |
5277 | } | |
5278 | ||
5279 | return build1_v (RETURN_EXPR, result); | |
5280 | } | |
5281 | ||
5282 | ||
6de9cd9a DN |
5283 | /* Generate code for a function. */ |
5284 | ||
5285 | void | |
5286 | gfc_generate_function_code (gfc_namespace * ns) | |
5287 | { | |
5288 | tree fndecl; | |
5289 | tree old_context; | |
5290 | tree decl; | |
5291 | tree tmp; | |
d74d8807 | 5292 | stmtblock_t init, cleanup; |
6de9cd9a | 5293 | stmtblock_t body; |
d74d8807 | 5294 | gfc_wrapped_block try_block; |
702a738b | 5295 | tree recurcheckvar = NULL_TREE; |
6de9cd9a | 5296 | gfc_symbol *sym; |
d74d8807 | 5297 | gfc_symbol *previous_procedure_symbol; |
5046aff5 | 5298 | int rank; |
cf7d2eb0 | 5299 | bool is_recursive; |
6de9cd9a DN |
5300 | |
5301 | sym = ns->proc_name; | |
d74d8807 DK |
5302 | previous_procedure_symbol = current_procedure_symbol; |
5303 | current_procedure_symbol = sym; | |
3d79abbd | 5304 | |
6de9cd9a | 5305 | /* Check that the frontend isn't still using this. */ |
6e45f57b | 5306 | gcc_assert (sym->tlink == NULL); |
6de9cd9a DN |
5307 | sym->tlink = sym; |
5308 | ||
5309 | /* Create the declaration for functions with global scope. */ | |
5310 | if (!sym->backend_decl) | |
fb55ca75 | 5311 | gfc_create_function_decl (ns, false); |
6de9cd9a DN |
5312 | |
5313 | fndecl = sym->backend_decl; | |
5314 | old_context = current_function_decl; | |
5315 | ||
5316 | if (old_context) | |
5317 | { | |
5318 | push_function_context (); | |
5319 | saved_parent_function_decls = saved_function_decls; | |
5320 | saved_function_decls = NULL_TREE; | |
5321 | } | |
5322 | ||
3d79abbd | 5323 | trans_function_start (sym); |
6de9cd9a | 5324 | |
d74d8807 | 5325 | gfc_init_block (&init); |
6de9cd9a | 5326 | |
d198b59a JJ |
5327 | if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER) |
5328 | { | |
5329 | /* Copy length backend_decls to all entry point result | |
5330 | symbols. */ | |
5331 | gfc_entry_list *el; | |
5332 | tree backend_decl; | |
5333 | ||
bc21d315 JW |
5334 | gfc_conv_const_charlen (ns->proc_name->ts.u.cl); |
5335 | backend_decl = ns->proc_name->result->ts.u.cl->backend_decl; | |
d198b59a | 5336 | for (el = ns->entries; el; el = el->next) |
bc21d315 | 5337 | el->sym->result->ts.u.cl->backend_decl = backend_decl; |
d198b59a JJ |
5338 | } |
5339 | ||
6de9cd9a DN |
5340 | /* Translate COMMON blocks. */ |
5341 | gfc_trans_common (ns); | |
5342 | ||
5f20c93a PT |
5343 | /* Null the parent fake result declaration if this namespace is |
5344 | a module function or an external procedures. */ | |
5345 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
5346 | || ns->parent == NULL) | |
5347 | parent_fake_result_decl = NULL_TREE; | |
5348 | ||
30aabb86 PT |
5349 | gfc_generate_contained_functions (ns); |
5350 | ||
77f2a970 JJ |
5351 | nonlocal_dummy_decls = NULL; |
5352 | nonlocal_dummy_decl_pset = NULL; | |
5353 | ||
b8ff4e88 | 5354 | has_coarray_vars = false; |
6de9cd9a | 5355 | generate_local_vars (ns); |
7389bce6 | 5356 | |
b8ff4e88 TB |
5357 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
5358 | generate_coarray_init (ns); | |
5359 | ||
5f20c93a PT |
5360 | /* Keep the parent fake result declaration in module functions |
5361 | or external procedures. */ | |
5362 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
5363 | || ns->parent == NULL) | |
5364 | current_fake_result_decl = parent_fake_result_decl; | |
5365 | else | |
5366 | current_fake_result_decl = NULL_TREE; | |
5367 | ||
d74d8807 DK |
5368 | is_recursive = sym->attr.recursive |
5369 | || (sym->attr.entry_master | |
5370 | && sym->ns->entries->sym->attr.recursive); | |
5371 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
5372 | && !is_recursive | |
5373 | && !gfc_option.flag_recursive) | |
5374 | { | |
5375 | char * msg; | |
5376 | ||
5377 | asprintf (&msg, "Recursive call to nonrecursive procedure '%s'", | |
5378 | sym->name); | |
5379 | recurcheckvar = gfc_create_var (boolean_type_node, "is_recursive"); | |
5380 | TREE_STATIC (recurcheckvar) = 1; | |
5381 | DECL_INITIAL (recurcheckvar) = boolean_false_node; | |
5382 | gfc_add_expr_to_block (&init, recurcheckvar); | |
5383 | gfc_trans_runtime_check (true, false, recurcheckvar, &init, | |
5384 | &sym->declared_at, msg); | |
5385 | gfc_add_modify (&init, recurcheckvar, boolean_true_node); | |
cede9502 | 5386 | free (msg); |
d74d8807 | 5387 | } |
6de9cd9a DN |
5388 | |
5389 | /* Now generate the code for the body of this function. */ | |
5390 | gfc_init_block (&body); | |
5391 | ||
5392 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node | |
d74d8807 | 5393 | && sym->attr.subroutine) |
6de9cd9a DN |
5394 | { |
5395 | tree alternate_return; | |
5f20c93a | 5396 | alternate_return = gfc_get_fake_result_decl (sym, 0); |
726a989a | 5397 | gfc_add_modify (&body, alternate_return, integer_zero_node); |
6de9cd9a DN |
5398 | } |
5399 | ||
3d79abbd PB |
5400 | if (ns->entries) |
5401 | { | |
5402 | /* Jump to the correct entry point. */ | |
5403 | tmp = gfc_trans_entry_master_switch (ns->entries); | |
5404 | gfc_add_expr_to_block (&body, tmp); | |
5405 | } | |
5406 | ||
cadb8f42 DK |
5407 | /* If bounds-checking is enabled, generate code to check passed in actual |
5408 | arguments against the expected dummy argument attributes (e.g. string | |
5409 | lengths). */ | |
975d3303 | 5410 | if ((gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) && !sym->attr.is_bind_c) |
cadb8f42 DK |
5411 | add_argument_checking (&body, sym); |
5412 | ||
6de9cd9a DN |
5413 | tmp = gfc_trans_code (ns->code); |
5414 | gfc_add_expr_to_block (&body, tmp); | |
5415 | ||
6de9cd9a DN |
5416 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node) |
5417 | { | |
d74d8807 | 5418 | tree result = get_proc_result (sym); |
6de9cd9a | 5419 | |
7a3eeb85 | 5420 | if (result != NULL_TREE && sym->attr.function && !sym->attr.pointer) |
5046aff5 | 5421 | { |
f18694de TB |
5422 | if (sym->attr.allocatable && sym->attr.dimension == 0 |
5423 | && sym->result == sym) | |
5424 | gfc_add_modify (&init, result, fold_convert (TREE_TYPE (result), | |
5425 | null_pointer_node)); | |
7a3eeb85 JW |
5426 | else if (sym->ts.type == BT_CLASS |
5427 | && CLASS_DATA (sym)->attr.allocatable | |
102344e2 TB |
5428 | && CLASS_DATA (sym)->attr.dimension == 0 |
5429 | && sym->result == sym) | |
7a3eeb85 JW |
5430 | { |
5431 | tmp = CLASS_DATA (sym)->backend_decl; | |
5432 | tmp = fold_build3_loc (input_location, COMPONENT_REF, | |
5433 | TREE_TYPE (tmp), result, tmp, NULL_TREE); | |
5434 | gfc_add_modify (&init, tmp, fold_convert (TREE_TYPE (tmp), | |
5435 | null_pointer_node)); | |
5436 | } | |
f18694de | 5437 | else if (sym->ts.type == BT_DERIVED |
7a3eeb85 JW |
5438 | && sym->ts.u.derived->attr.alloc_comp |
5439 | && !sym->attr.allocatable) | |
5b130807 TB |
5440 | { |
5441 | rank = sym->as ? sym->as->rank : 0; | |
d74d8807 DK |
5442 | tmp = gfc_nullify_alloc_comp (sym->ts.u.derived, result, rank); |
5443 | gfc_add_expr_to_block (&init, tmp); | |
5b130807 | 5444 | } |
958dd42b | 5445 | } |
cf7d2eb0 | 5446 | |
766d0c8c DF |
5447 | if (result == NULL_TREE) |
5448 | { | |
5449 | /* TODO: move to the appropriate place in resolve.c. */ | |
fba5ace0 | 5450 | if (warn_return_type && sym == sym->result) |
766d0c8c DF |
5451 | gfc_warning ("Return value of function '%s' at %L not set", |
5452 | sym->name, &sym->declared_at); | |
fba5ace0 TB |
5453 | if (warn_return_type) |
5454 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
766d0c8c | 5455 | } |
6de9cd9a | 5456 | else |
d74d8807 | 5457 | gfc_add_expr_to_block (&body, gfc_generate_return ()); |
6de9cd9a | 5458 | } |
d74d8807 DK |
5459 | |
5460 | gfc_init_block (&cleanup); | |
5461 | ||
5462 | /* Reset recursion-check variable. */ | |
5463 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
5464 | && !is_recursive | |
e3339d0f | 5465 | && !gfc_option.gfc_flag_openmp |
d74d8807 | 5466 | && recurcheckvar != NULL_TREE) |
cf7d2eb0 | 5467 | { |
d74d8807 DK |
5468 | gfc_add_modify (&cleanup, recurcheckvar, boolean_false_node); |
5469 | recurcheckvar = NULL; | |
cf7d2eb0 | 5470 | } |
5046aff5 | 5471 | |
d74d8807 DK |
5472 | /* Finish the function body and add init and cleanup code. */ |
5473 | tmp = gfc_finish_block (&body); | |
5474 | gfc_start_wrapped_block (&try_block, tmp); | |
5475 | /* Add code to create and cleanup arrays. */ | |
5476 | gfc_trans_deferred_vars (sym, &try_block); | |
5477 | gfc_add_init_cleanup (&try_block, gfc_finish_block (&init), | |
5478 | gfc_finish_block (&cleanup)); | |
6de9cd9a DN |
5479 | |
5480 | /* Add all the decls we created during processing. */ | |
5481 | decl = saved_function_decls; | |
5482 | while (decl) | |
5483 | { | |
5484 | tree next; | |
5485 | ||
910ad8de NF |
5486 | next = DECL_CHAIN (decl); |
5487 | DECL_CHAIN (decl) = NULL_TREE; | |
755634e6 | 5488 | pushdecl (decl); |
6de9cd9a DN |
5489 | decl = next; |
5490 | } | |
5491 | saved_function_decls = NULL_TREE; | |
5492 | ||
d74d8807 | 5493 | DECL_SAVED_TREE (fndecl) = gfc_finish_wrapped_block (&try_block); |
c7c79a09 | 5494 | decl = getdecls (); |
6de9cd9a DN |
5495 | |
5496 | /* Finish off this function and send it for code generation. */ | |
87a60f68 | 5497 | poplevel (1, 1); |
6de9cd9a DN |
5498 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; |
5499 | ||
c7c79a09 JJ |
5500 | DECL_SAVED_TREE (fndecl) |
5501 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5502 | DECL_INITIAL (fndecl)); | |
5503 | ||
77f2a970 JJ |
5504 | if (nonlocal_dummy_decls) |
5505 | { | |
5506 | BLOCK_VARS (DECL_INITIAL (fndecl)) | |
5507 | = chainon (BLOCK_VARS (DECL_INITIAL (fndecl)), nonlocal_dummy_decls); | |
5508 | pointer_set_destroy (nonlocal_dummy_decl_pset); | |
5509 | nonlocal_dummy_decls = NULL; | |
5510 | nonlocal_dummy_decl_pset = NULL; | |
5511 | } | |
5512 | ||
6de9cd9a DN |
5513 | /* Output the GENERIC tree. */ |
5514 | dump_function (TDI_original, fndecl); | |
5515 | ||
5516 | /* Store the end of the function, so that we get good line number | |
5517 | info for the epilogue. */ | |
5518 | cfun->function_end_locus = input_location; | |
5519 | ||
5520 | /* We're leaving the context of this function, so zap cfun. | |
5521 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
5522 | tree_rest_of_compilation. */ | |
db2960f4 | 5523 | set_cfun (NULL); |
6de9cd9a DN |
5524 | |
5525 | if (old_context) | |
5526 | { | |
5527 | pop_function_context (); | |
5528 | saved_function_decls = saved_parent_function_decls; | |
5529 | } | |
5530 | current_function_decl = old_context; | |
5531 | ||
c3fb8214 | 5532 | if (decl_function_context (fndecl) && gfc_option.coarray != GFC_FCOARRAY_LIB |
b8ff4e88 | 5533 | && has_coarray_vars) |
44de5aeb | 5534 | /* Register this function with cgraph just far enough to get it |
b8ff4e88 TB |
5535 | added to our parent's nested function list. |
5536 | If there are static coarrays in this function, the nested _caf_init | |
5537 | function has already called cgraph_create_node, which also created | |
5538 | the cgraph node for this function. */ | |
7c589800 | 5539 | (void) cgraph_create_node (fndecl); |
6de9cd9a | 5540 | else |
9618fb3c | 5541 | cgraph_finalize_function (fndecl, true); |
a64f5186 JJ |
5542 | |
5543 | gfc_trans_use_stmts (ns); | |
bd11e37d | 5544 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
092231a8 TB |
5545 | |
5546 | if (sym->attr.is_main_program) | |
5547 | create_main_function (fndecl); | |
d74d8807 DK |
5548 | |
5549 | current_procedure_symbol = previous_procedure_symbol; | |
6de9cd9a DN |
5550 | } |
5551 | ||
092231a8 | 5552 | |
6de9cd9a DN |
5553 | void |
5554 | gfc_generate_constructors (void) | |
5555 | { | |
6e45f57b | 5556 | gcc_assert (gfc_static_ctors == NULL_TREE); |
6de9cd9a DN |
5557 | #if 0 |
5558 | tree fnname; | |
5559 | tree type; | |
5560 | tree fndecl; | |
5561 | tree decl; | |
5562 | tree tmp; | |
5563 | ||
5564 | if (gfc_static_ctors == NULL_TREE) | |
5565 | return; | |
5566 | ||
5880f14f | 5567 | fnname = get_file_function_name ("I"); |
b64fca63 | 5568 | type = build_function_type_list (void_type_node, NULL_TREE); |
6de9cd9a | 5569 | |
c2255bc4 AH |
5570 | fndecl = build_decl (input_location, |
5571 | FUNCTION_DECL, fnname, type); | |
6de9cd9a DN |
5572 | TREE_PUBLIC (fndecl) = 1; |
5573 | ||
c2255bc4 AH |
5574 | decl = build_decl (input_location, |
5575 | RESULT_DECL, NULL_TREE, void_type_node); | |
b785f485 RH |
5576 | DECL_ARTIFICIAL (decl) = 1; |
5577 | DECL_IGNORED_P (decl) = 1; | |
6de9cd9a DN |
5578 | DECL_CONTEXT (decl) = fndecl; |
5579 | DECL_RESULT (fndecl) = decl; | |
5580 | ||
5581 | pushdecl (fndecl); | |
5582 | ||
5583 | current_function_decl = fndecl; | |
5584 | ||
0e6df31e | 5585 | rest_of_decl_compilation (fndecl, 1, 0); |
6de9cd9a | 5586 | |
0e6df31e | 5587 | make_decl_rtl (fndecl); |
6de9cd9a | 5588 | |
b6b27e98 | 5589 | allocate_struct_function (fndecl, false); |
6de9cd9a | 5590 | |
87a60f68 | 5591 | pushlevel (); |
6de9cd9a DN |
5592 | |
5593 | for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors)) | |
5594 | { | |
db3927fb AH |
5595 | tmp = build_call_expr_loc (input_location, |
5596 | TREE_VALUE (gfc_static_ctors), 0); | |
c2255bc4 | 5597 | DECL_SAVED_TREE (fndecl) = build_stmt (input_location, EXPR_STMT, tmp); |
6de9cd9a DN |
5598 | } |
5599 | ||
c7c79a09 | 5600 | decl = getdecls (); |
87a60f68 | 5601 | poplevel (1, 1); |
6de9cd9a DN |
5602 | |
5603 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
c7c79a09 JJ |
5604 | DECL_SAVED_TREE (fndecl) |
5605 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5606 | DECL_INITIAL (fndecl)); | |
6de9cd9a DN |
5607 | |
5608 | free_after_parsing (cfun); | |
5609 | free_after_compilation (cfun); | |
5610 | ||
0f0377f6 | 5611 | tree_rest_of_compilation (fndecl); |
6de9cd9a DN |
5612 | |
5613 | current_function_decl = NULL_TREE; | |
5614 | #endif | |
5615 | } | |
5616 | ||
0de4325e TS |
5617 | /* Translates a BLOCK DATA program unit. This means emitting the |
5618 | commons contained therein plus their initializations. We also emit | |
5619 | a globally visible symbol to make sure that each BLOCK DATA program | |
5620 | unit remains unique. */ | |
5621 | ||
5622 | void | |
5623 | gfc_generate_block_data (gfc_namespace * ns) | |
5624 | { | |
5625 | tree decl; | |
5626 | tree id; | |
5627 | ||
c8cc8542 PB |
5628 | /* Tell the backend the source location of the block data. */ |
5629 | if (ns->proc_name) | |
5630 | gfc_set_backend_locus (&ns->proc_name->declared_at); | |
5631 | else | |
5632 | gfc_set_backend_locus (&gfc_current_locus); | |
5633 | ||
5634 | /* Process the DATA statements. */ | |
0de4325e TS |
5635 | gfc_trans_common (ns); |
5636 | ||
c8cc8542 PB |
5637 | /* Create a global symbol with the mane of the block data. This is to |
5638 | generate linker errors if the same name is used twice. It is never | |
5639 | really used. */ | |
0de4325e TS |
5640 | if (ns->proc_name) |
5641 | id = gfc_sym_mangled_function_id (ns->proc_name); | |
5642 | else | |
5643 | id = get_identifier ("__BLOCK_DATA__"); | |
5644 | ||
c2255bc4 AH |
5645 | decl = build_decl (input_location, |
5646 | VAR_DECL, id, gfc_array_index_type); | |
0de4325e TS |
5647 | TREE_PUBLIC (decl) = 1; |
5648 | TREE_STATIC (decl) = 1; | |
a64f5186 | 5649 | DECL_IGNORED_P (decl) = 1; |
0de4325e TS |
5650 | |
5651 | pushdecl (decl); | |
5652 | rest_of_decl_compilation (decl, 1, 0); | |
5653 | } | |
5654 | ||
83d890b9 | 5655 | |
9abe5e56 DK |
5656 | /* Process the local variables of a BLOCK construct. */ |
5657 | ||
5658 | void | |
6312ef45 | 5659 | gfc_process_block_locals (gfc_namespace* ns) |
9abe5e56 DK |
5660 | { |
5661 | tree decl; | |
5662 | ||
5663 | gcc_assert (saved_local_decls == NULL_TREE); | |
b8ff4e88 TB |
5664 | has_coarray_vars = false; |
5665 | ||
9abe5e56 DK |
5666 | generate_local_vars (ns); |
5667 | ||
b8ff4e88 TB |
5668 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
5669 | generate_coarray_init (ns); | |
5670 | ||
9abe5e56 DK |
5671 | decl = saved_local_decls; |
5672 | while (decl) | |
5673 | { | |
5674 | tree next; | |
5675 | ||
910ad8de NF |
5676 | next = DECL_CHAIN (decl); |
5677 | DECL_CHAIN (decl) = NULL_TREE; | |
9abe5e56 DK |
5678 | pushdecl (decl); |
5679 | decl = next; | |
5680 | } | |
5681 | saved_local_decls = NULL_TREE; | |
5682 | } | |
5683 | ||
5684 | ||
6de9cd9a | 5685 | #include "gt-fortran-trans-decl.h" |