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6de9cd9a | 1 | /* Backend function setup |
23a5b65a | 2 | Copyright (C) 2002-2014 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" |
8e54f6d3 | 27 | #include "gfortran.h" |
6de9cd9a | 28 | #include "tree.h" |
d8a2d370 DN |
29 | #include "stringpool.h" |
30 | #include "stor-layout.h" | |
31 | #include "varasm.h" | |
32 | #include "attribs.h" | |
6de9cd9a | 33 | #include "tree-dump.h" |
45b0be94 | 34 | #include "gimple-expr.h" /* For create_tmp_var_raw. */ |
6de9cd9a | 35 | #include "ggc.h" |
c829d016 TB |
36 | #include "diagnostic-core.h" /* For internal_error. */ |
37 | #include "toplev.h" /* For announce_function. */ | |
6de9cd9a DN |
38 | #include "target.h" |
39 | #include "function.h" | |
6de9cd9a DN |
40 | #include "flags.h" |
41 | #include "cgraph.h" | |
a64f5186 | 42 | #include "debug.h" |
6e2830c3 | 43 | #include "hash-set.h" |
b7e75771 | 44 | #include "constructor.h" |
6de9cd9a DN |
45 | #include "trans.h" |
46 | #include "trans-types.h" | |
47 | #include "trans-array.h" | |
48 | #include "trans-const.h" | |
49 | /* Only for gfc_trans_code. Shouldn't need to include this. */ | |
50 | #include "trans-stmt.h" | |
51 | ||
52 | #define MAX_LABEL_VALUE 99999 | |
53 | ||
54 | ||
55 | /* Holds the result of the function if no result variable specified. */ | |
56 | ||
57 | static GTY(()) tree current_fake_result_decl; | |
5f20c93a | 58 | static GTY(()) tree parent_fake_result_decl; |
6de9cd9a | 59 | |
6de9cd9a DN |
60 | |
61 | /* Holds the variable DECLs for the current function. */ | |
62 | ||
417ab240 JJ |
63 | static GTY(()) tree saved_function_decls; |
64 | static GTY(()) tree saved_parent_function_decls; | |
6de9cd9a | 65 | |
6e2830c3 | 66 | static hash_set<tree> *nonlocal_dummy_decl_pset; |
77f2a970 | 67 | static GTY(()) tree nonlocal_dummy_decls; |
6de9cd9a | 68 | |
9abe5e56 DK |
69 | /* Holds the variable DECLs that are locals. */ |
70 | ||
71 | static GTY(()) tree saved_local_decls; | |
72 | ||
6de9cd9a DN |
73 | /* The namespace of the module we're currently generating. Only used while |
74 | outputting decls for module variables. Do not rely on this being set. */ | |
75 | ||
76 | static gfc_namespace *module_namespace; | |
77 | ||
d74d8807 DK |
78 | /* The currently processed procedure symbol. */ |
79 | static gfc_symbol* current_procedure_symbol = NULL; | |
80 | ||
6de9cd9a | 81 | |
b8ff4e88 TB |
82 | /* With -fcoarray=lib: For generating the registering call |
83 | of static coarrays. */ | |
84 | static bool has_coarray_vars; | |
85 | static stmtblock_t caf_init_block; | |
86 | ||
87 | ||
6de9cd9a DN |
88 | /* List of static constructor functions. */ |
89 | ||
90 | tree gfc_static_ctors; | |
91 | ||
92 | ||
8b198102 FXC |
93 | /* Whether we've seen a symbol from an IEEE module in the namespace. */ |
94 | static int seen_ieee_symbol; | |
95 | ||
6de9cd9a DN |
96 | /* Function declarations for builtin library functions. */ |
97 | ||
6de9cd9a DN |
98 | tree gfor_fndecl_pause_numeric; |
99 | tree gfor_fndecl_pause_string; | |
100 | tree gfor_fndecl_stop_numeric; | |
cea59ace | 101 | tree gfor_fndecl_stop_numeric_f08; |
6de9cd9a | 102 | tree gfor_fndecl_stop_string; |
6d1b0f92 | 103 | tree gfor_fndecl_error_stop_numeric; |
d0a4a61c | 104 | tree gfor_fndecl_error_stop_string; |
6de9cd9a | 105 | tree gfor_fndecl_runtime_error; |
f96d606f | 106 | tree gfor_fndecl_runtime_error_at; |
0d52899f | 107 | tree gfor_fndecl_runtime_warning_at; |
1529b8d9 | 108 | tree gfor_fndecl_os_error; |
f96d606f | 109 | tree gfor_fndecl_generate_error; |
092231a8 | 110 | tree gfor_fndecl_set_args; |
944b8b35 | 111 | tree gfor_fndecl_set_fpe; |
68d2e027 | 112 | tree gfor_fndecl_set_options; |
eaa90d25 | 113 | tree gfor_fndecl_set_convert; |
d67ab5ee | 114 | tree gfor_fndecl_set_record_marker; |
07b3bbf2 | 115 | tree gfor_fndecl_set_max_subrecord_length; |
35059811 FXC |
116 | tree gfor_fndecl_ctime; |
117 | tree gfor_fndecl_fdate; | |
25fc05eb | 118 | tree gfor_fndecl_ttynam; |
6de9cd9a DN |
119 | tree gfor_fndecl_in_pack; |
120 | tree gfor_fndecl_in_unpack; | |
121 | tree gfor_fndecl_associated; | |
a416c4c7 FXC |
122 | tree gfor_fndecl_system_clock4; |
123 | tree gfor_fndecl_system_clock8; | |
8b198102 FXC |
124 | tree gfor_fndecl_ieee_procedure_entry; |
125 | tree gfor_fndecl_ieee_procedure_exit; | |
6de9cd9a DN |
126 | |
127 | ||
60386f50 TB |
128 | /* Coarray run-time library function decls. */ |
129 | tree gfor_fndecl_caf_init; | |
130 | tree gfor_fndecl_caf_finalize; | |
a8a5f4a9 TB |
131 | tree gfor_fndecl_caf_this_image; |
132 | tree gfor_fndecl_caf_num_images; | |
b8ff4e88 | 133 | tree gfor_fndecl_caf_register; |
5d81ddd0 | 134 | tree gfor_fndecl_caf_deregister; |
b5116268 TB |
135 | tree gfor_fndecl_caf_get; |
136 | tree gfor_fndecl_caf_send; | |
137 | tree gfor_fndecl_caf_sendget; | |
60386f50 TB |
138 | tree gfor_fndecl_caf_sync_all; |
139 | tree gfor_fndecl_caf_sync_images; | |
140 | tree gfor_fndecl_caf_error_stop; | |
141 | tree gfor_fndecl_caf_error_stop_str; | |
42a8246d TB |
142 | tree gfor_fndecl_caf_atomic_def; |
143 | tree gfor_fndecl_caf_atomic_ref; | |
144 | tree gfor_fndecl_caf_atomic_cas; | |
145 | tree gfor_fndecl_caf_atomic_op; | |
bc0229f9 TB |
146 | tree gfor_fndecl_caf_lock; |
147 | tree gfor_fndecl_caf_unlock; | |
d62cf3df TB |
148 | tree gfor_fndecl_co_max; |
149 | tree gfor_fndecl_co_min; | |
150 | tree gfor_fndecl_co_sum; | |
60386f50 | 151 | |
60386f50 | 152 | |
6de9cd9a DN |
153 | /* Math functions. Many other math functions are handled in |
154 | trans-intrinsic.c. */ | |
155 | ||
644cb69f | 156 | gfc_powdecl_list gfor_fndecl_math_powi[4][3]; |
6de9cd9a DN |
157 | tree gfor_fndecl_math_ishftc4; |
158 | tree gfor_fndecl_math_ishftc8; | |
644cb69f | 159 | tree gfor_fndecl_math_ishftc16; |
6de9cd9a DN |
160 | |
161 | ||
162 | /* String functions. */ | |
163 | ||
6de9cd9a DN |
164 | tree gfor_fndecl_compare_string; |
165 | tree gfor_fndecl_concat_string; | |
166 | tree gfor_fndecl_string_len_trim; | |
167 | tree gfor_fndecl_string_index; | |
168 | tree gfor_fndecl_string_scan; | |
169 | tree gfor_fndecl_string_verify; | |
170 | tree gfor_fndecl_string_trim; | |
2263c775 | 171 | tree gfor_fndecl_string_minmax; |
6de9cd9a DN |
172 | tree gfor_fndecl_adjustl; |
173 | tree gfor_fndecl_adjustr; | |
d393bbd7 | 174 | tree gfor_fndecl_select_string; |
374929b2 FXC |
175 | tree gfor_fndecl_compare_string_char4; |
176 | tree gfor_fndecl_concat_string_char4; | |
177 | tree gfor_fndecl_string_len_trim_char4; | |
178 | tree gfor_fndecl_string_index_char4; | |
179 | tree gfor_fndecl_string_scan_char4; | |
180 | tree gfor_fndecl_string_verify_char4; | |
181 | tree gfor_fndecl_string_trim_char4; | |
182 | tree gfor_fndecl_string_minmax_char4; | |
183 | tree gfor_fndecl_adjustl_char4; | |
184 | tree gfor_fndecl_adjustr_char4; | |
d393bbd7 FXC |
185 | tree gfor_fndecl_select_string_char4; |
186 | ||
187 | ||
188 | /* Conversion between character kinds. */ | |
189 | tree gfor_fndecl_convert_char1_to_char4; | |
190 | tree gfor_fndecl_convert_char4_to_char1; | |
6de9cd9a DN |
191 | |
192 | ||
193 | /* Other misc. runtime library functions. */ | |
6de9cd9a DN |
194 | tree gfor_fndecl_size0; |
195 | tree gfor_fndecl_size1; | |
b41b2534 | 196 | tree gfor_fndecl_iargc; |
6de9cd9a | 197 | |
a39fafac FXC |
198 | /* Intrinsic functions implemented in Fortran. */ |
199 | tree gfor_fndecl_sc_kind; | |
6de9cd9a DN |
200 | tree gfor_fndecl_si_kind; |
201 | tree gfor_fndecl_sr_kind; | |
202 | ||
5a0aad31 FXC |
203 | /* BLAS gemm functions. */ |
204 | tree gfor_fndecl_sgemm; | |
205 | tree gfor_fndecl_dgemm; | |
206 | tree gfor_fndecl_cgemm; | |
207 | tree gfor_fndecl_zgemm; | |
208 | ||
6de9cd9a DN |
209 | |
210 | static void | |
211 | gfc_add_decl_to_parent_function (tree decl) | |
212 | { | |
6e45f57b | 213 | gcc_assert (decl); |
6de9cd9a DN |
214 | DECL_CONTEXT (decl) = DECL_CONTEXT (current_function_decl); |
215 | DECL_NONLOCAL (decl) = 1; | |
910ad8de | 216 | DECL_CHAIN (decl) = saved_parent_function_decls; |
6de9cd9a DN |
217 | saved_parent_function_decls = decl; |
218 | } | |
219 | ||
220 | void | |
221 | gfc_add_decl_to_function (tree decl) | |
222 | { | |
6e45f57b | 223 | gcc_assert (decl); |
6de9cd9a DN |
224 | TREE_USED (decl) = 1; |
225 | DECL_CONTEXT (decl) = current_function_decl; | |
910ad8de | 226 | DECL_CHAIN (decl) = saved_function_decls; |
6de9cd9a DN |
227 | saved_function_decls = decl; |
228 | } | |
229 | ||
9abe5e56 DK |
230 | static void |
231 | add_decl_as_local (tree decl) | |
232 | { | |
233 | gcc_assert (decl); | |
234 | TREE_USED (decl) = 1; | |
235 | DECL_CONTEXT (decl) = current_function_decl; | |
910ad8de | 236 | DECL_CHAIN (decl) = saved_local_decls; |
9abe5e56 DK |
237 | saved_local_decls = decl; |
238 | } | |
239 | ||
6de9cd9a | 240 | |
c006df4e SB |
241 | /* Build a backend label declaration. Set TREE_USED for named labels. |
242 | The context of the label is always the current_function_decl. All | |
243 | labels are marked artificial. */ | |
6de9cd9a DN |
244 | |
245 | tree | |
246 | gfc_build_label_decl (tree label_id) | |
247 | { | |
248 | /* 2^32 temporaries should be enough. */ | |
249 | static unsigned int tmp_num = 1; | |
250 | tree label_decl; | |
251 | char *label_name; | |
252 | ||
253 | if (label_id == NULL_TREE) | |
254 | { | |
255 | /* Build an internal label name. */ | |
256 | ASM_FORMAT_PRIVATE_NAME (label_name, "L", tmp_num++); | |
257 | label_id = get_identifier (label_name); | |
258 | } | |
259 | else | |
260 | label_name = NULL; | |
261 | ||
262 | /* Build the LABEL_DECL node. Labels have no type. */ | |
c2255bc4 AH |
263 | label_decl = build_decl (input_location, |
264 | LABEL_DECL, label_id, void_type_node); | |
6de9cd9a DN |
265 | DECL_CONTEXT (label_decl) = current_function_decl; |
266 | DECL_MODE (label_decl) = VOIDmode; | |
267 | ||
c006df4e SB |
268 | /* We always define the label as used, even if the original source |
269 | file never references the label. We don't want all kinds of | |
270 | spurious warnings for old-style Fortran code with too many | |
271 | labels. */ | |
272 | TREE_USED (label_decl) = 1; | |
6de9cd9a | 273 | |
c006df4e | 274 | DECL_ARTIFICIAL (label_decl) = 1; |
6de9cd9a DN |
275 | return label_decl; |
276 | } | |
277 | ||
278 | ||
c8cc8542 PB |
279 | /* Set the backend source location of a decl. */ |
280 | ||
281 | void | |
282 | gfc_set_decl_location (tree decl, locus * loc) | |
283 | { | |
c8cc8542 | 284 | DECL_SOURCE_LOCATION (decl) = loc->lb->location; |
c8cc8542 PB |
285 | } |
286 | ||
287 | ||
6de9cd9a DN |
288 | /* Return the backend label declaration for a given label structure, |
289 | or create it if it doesn't exist yet. */ | |
290 | ||
291 | tree | |
292 | gfc_get_label_decl (gfc_st_label * lp) | |
293 | { | |
6de9cd9a DN |
294 | if (lp->backend_decl) |
295 | return lp->backend_decl; | |
296 | else | |
297 | { | |
298 | char label_name[GFC_MAX_SYMBOL_LEN + 1]; | |
299 | tree label_decl; | |
300 | ||
301 | /* Validate the label declaration from the front end. */ | |
6e45f57b | 302 | gcc_assert (lp != NULL && lp->value <= MAX_LABEL_VALUE); |
6de9cd9a DN |
303 | |
304 | /* Build a mangled name for the label. */ | |
305 | sprintf (label_name, "__label_%.6d", lp->value); | |
306 | ||
307 | /* Build the LABEL_DECL node. */ | |
308 | label_decl = gfc_build_label_decl (get_identifier (label_name)); | |
309 | ||
310 | /* Tell the debugger where the label came from. */ | |
f8d0aee5 | 311 | if (lp->value <= MAX_LABEL_VALUE) /* An internal label. */ |
c8cc8542 | 312 | gfc_set_decl_location (label_decl, &lp->where); |
6de9cd9a DN |
313 | else |
314 | DECL_ARTIFICIAL (label_decl) = 1; | |
315 | ||
316 | /* Store the label in the label list and return the LABEL_DECL. */ | |
317 | lp->backend_decl = label_decl; | |
318 | return label_decl; | |
319 | } | |
320 | } | |
321 | ||
322 | ||
323 | /* Convert a gfc_symbol to an identifier of the same name. */ | |
324 | ||
325 | static tree | |
326 | gfc_sym_identifier (gfc_symbol * sym) | |
327 | { | |
a7ad6c2d TB |
328 | if (sym->attr.is_main_program && strcmp (sym->name, "main") == 0) |
329 | return (get_identifier ("MAIN__")); | |
330 | else | |
331 | return (get_identifier (sym->name)); | |
6de9cd9a DN |
332 | } |
333 | ||
334 | ||
335 | /* Construct mangled name from symbol name. */ | |
336 | ||
337 | static tree | |
338 | gfc_sym_mangled_identifier (gfc_symbol * sym) | |
339 | { | |
340 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
341 | ||
a8b3b0b6 CR |
342 | /* Prevent the mangling of identifiers that have an assigned |
343 | binding label (mainly those that are bind(c)). */ | |
62603fae JB |
344 | if (sym->attr.is_bind_c == 1 && sym->binding_label) |
345 | return get_identifier (sym->binding_label); | |
8b704316 | 346 | |
cb9e4f55 | 347 | if (sym->module == NULL) |
6de9cd9a DN |
348 | return gfc_sym_identifier (sym); |
349 | else | |
350 | { | |
9998ef84 | 351 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
6de9cd9a DN |
352 | return get_identifier (name); |
353 | } | |
354 | } | |
355 | ||
356 | ||
357 | /* Construct mangled function name from symbol name. */ | |
358 | ||
359 | static tree | |
360 | gfc_sym_mangled_function_id (gfc_symbol * sym) | |
361 | { | |
362 | int has_underscore; | |
363 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
364 | ||
a8b3b0b6 CR |
365 | /* It may be possible to simply use the binding label if it's |
366 | provided, and remove the other checks. Then we could use it | |
367 | for other things if we wished. */ | |
368 | if ((sym->attr.is_bind_c == 1 || sym->attr.is_iso_c == 1) && | |
62603fae | 369 | sym->binding_label) |
a8b3b0b6 CR |
370 | /* use the binding label rather than the mangled name */ |
371 | return get_identifier (sym->binding_label); | |
372 | ||
cb9e4f55 | 373 | if (sym->module == NULL || sym->attr.proc == PROC_EXTERNAL |
c89686a8 PT |
374 | || (sym->module != NULL && (sym->attr.external |
375 | || sym->attr.if_source == IFSRC_IFBODY))) | |
6de9cd9a | 376 | { |
ecf24057 FXC |
377 | /* Main program is mangled into MAIN__. */ |
378 | if (sym->attr.is_main_program) | |
379 | return get_identifier ("MAIN__"); | |
380 | ||
381 | /* Intrinsic procedures are never mangled. */ | |
382 | if (sym->attr.proc == PROC_INTRINSIC) | |
6de9cd9a DN |
383 | return get_identifier (sym->name); |
384 | ||
385 | if (gfc_option.flag_underscoring) | |
386 | { | |
387 | has_underscore = strchr (sym->name, '_') != 0; | |
388 | if (gfc_option.flag_second_underscore && has_underscore) | |
389 | snprintf (name, sizeof name, "%s__", sym->name); | |
390 | else | |
391 | snprintf (name, sizeof name, "%s_", sym->name); | |
392 | return get_identifier (name); | |
393 | } | |
394 | else | |
395 | return get_identifier (sym->name); | |
396 | } | |
397 | else | |
398 | { | |
9998ef84 | 399 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
6de9cd9a DN |
400 | return get_identifier (name); |
401 | } | |
402 | } | |
403 | ||
404 | ||
43ce5e52 FXC |
405 | void |
406 | gfc_set_decl_assembler_name (tree decl, tree name) | |
407 | { | |
408 | tree target_mangled = targetm.mangle_decl_assembler_name (decl, name); | |
409 | SET_DECL_ASSEMBLER_NAME (decl, target_mangled); | |
410 | } | |
411 | ||
412 | ||
bae88af6 TS |
413 | /* Returns true if a variable of specified size should go on the stack. */ |
414 | ||
415 | int | |
416 | gfc_can_put_var_on_stack (tree size) | |
417 | { | |
418 | unsigned HOST_WIDE_INT low; | |
419 | ||
420 | if (!INTEGER_CST_P (size)) | |
421 | return 0; | |
422 | ||
423 | if (gfc_option.flag_max_stack_var_size < 0) | |
424 | return 1; | |
425 | ||
807e902e | 426 | if (!tree_fits_uhwi_p (size)) |
bae88af6 TS |
427 | return 0; |
428 | ||
429 | low = TREE_INT_CST_LOW (size); | |
430 | if (low > (unsigned HOST_WIDE_INT) gfc_option.flag_max_stack_var_size) | |
431 | return 0; | |
432 | ||
433 | /* TODO: Set a per-function stack size limit. */ | |
434 | ||
435 | return 1; | |
436 | } | |
437 | ||
438 | ||
b122dc6a JJ |
439 | /* gfc_finish_cray_pointee sets DECL_VALUE_EXPR for a Cray pointee to |
440 | an expression involving its corresponding pointer. There are | |
441 | 2 cases; one for variable size arrays, and one for everything else, | |
442 | because variable-sized arrays require one fewer level of | |
443 | indirection. */ | |
444 | ||
445 | static void | |
446 | gfc_finish_cray_pointee (tree decl, gfc_symbol *sym) | |
447 | { | |
448 | tree ptr_decl = gfc_get_symbol_decl (sym->cp_pointer); | |
449 | tree value; | |
450 | ||
451 | /* Parameters need to be dereferenced. */ | |
8b704316 | 452 | if (sym->cp_pointer->attr.dummy) |
db3927fb AH |
453 | ptr_decl = build_fold_indirect_ref_loc (input_location, |
454 | ptr_decl); | |
b122dc6a JJ |
455 | |
456 | /* Check to see if we're dealing with a variable-sized array. */ | |
457 | if (sym->attr.dimension | |
8b704316 PT |
458 | && TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE) |
459 | { | |
831d7813 | 460 | /* These decls will be dereferenced later, so we don't dereference |
b122dc6a JJ |
461 | them here. */ |
462 | value = convert (TREE_TYPE (decl), ptr_decl); | |
463 | } | |
464 | else | |
465 | { | |
466 | ptr_decl = convert (build_pointer_type (TREE_TYPE (decl)), | |
467 | ptr_decl); | |
db3927fb AH |
468 | value = build_fold_indirect_ref_loc (input_location, |
469 | ptr_decl); | |
b122dc6a JJ |
470 | } |
471 | ||
472 | SET_DECL_VALUE_EXPR (decl, value); | |
473 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
6c7a4dfd | 474 | GFC_DECL_CRAY_POINTEE (decl) = 1; |
b122dc6a JJ |
475 | } |
476 | ||
477 | ||
faf28b3a | 478 | /* Finish processing of a declaration without an initial value. */ |
6de9cd9a DN |
479 | |
480 | static void | |
faf28b3a | 481 | gfc_finish_decl (tree decl) |
6de9cd9a | 482 | { |
faf28b3a TS |
483 | gcc_assert (TREE_CODE (decl) == PARM_DECL |
484 | || DECL_INITIAL (decl) == NULL_TREE); | |
6de9cd9a | 485 | |
faf28b3a TS |
486 | if (TREE_CODE (decl) != VAR_DECL) |
487 | return; | |
6de9cd9a | 488 | |
faf28b3a TS |
489 | if (DECL_SIZE (decl) == NULL_TREE |
490 | && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE) | |
491 | layout_decl (decl, 0); | |
492 | ||
493 | /* A few consistency checks. */ | |
494 | /* A static variable with an incomplete type is an error if it is | |
495 | initialized. Also if it is not file scope. Otherwise, let it | |
496 | through, but if it is not `extern' then it may cause an error | |
497 | message later. */ | |
498 | /* An automatic variable with an incomplete type is an error. */ | |
499 | ||
500 | /* We should know the storage size. */ | |
501 | gcc_assert (DECL_SIZE (decl) != NULL_TREE | |
8b704316 | 502 | || (TREE_STATIC (decl) |
faf28b3a TS |
503 | ? (!DECL_INITIAL (decl) || !DECL_CONTEXT (decl)) |
504 | : DECL_EXTERNAL (decl))); | |
505 | ||
506 | /* The storage size should be constant. */ | |
507 | gcc_assert ((!DECL_EXTERNAL (decl) && !TREE_STATIC (decl)) | |
508 | || !DECL_SIZE (decl) | |
509 | || TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST); | |
6de9cd9a DN |
510 | } |
511 | ||
512 | ||
92d28cbb JJ |
513 | /* Handle setting of GFC_DECL_SCALAR* on DECL. */ |
514 | ||
515 | void | |
516 | gfc_finish_decl_attrs (tree decl, symbol_attribute *attr) | |
517 | { | |
518 | if (!attr->dimension && !attr->codimension) | |
519 | { | |
520 | /* Handle scalar allocatable variables. */ | |
521 | if (attr->allocatable) | |
522 | { | |
523 | gfc_allocate_lang_decl (decl); | |
524 | GFC_DECL_SCALAR_ALLOCATABLE (decl) = 1; | |
525 | } | |
526 | /* Handle scalar pointer variables. */ | |
527 | if (attr->pointer) | |
528 | { | |
529 | gfc_allocate_lang_decl (decl); | |
530 | GFC_DECL_SCALAR_POINTER (decl) = 1; | |
531 | } | |
532 | } | |
533 | } | |
534 | ||
535 | ||
6de9cd9a DN |
536 | /* Apply symbol attributes to a variable, and add it to the function scope. */ |
537 | ||
538 | static void | |
539 | gfc_finish_var_decl (tree decl, gfc_symbol * sym) | |
540 | { | |
7b901ac4 | 541 | tree new_type; |
f8d0aee5 | 542 | /* TREE_ADDRESSABLE means the address of this variable is actually needed. |
6de9cd9a DN |
543 | This is the equivalent of the TARGET variables. |
544 | We also need to set this if the variable is passed by reference in a | |
545 | CALL statement. */ | |
83d890b9 | 546 | |
b122dc6a | 547 | /* Set DECL_VALUE_EXPR for Cray Pointees. */ |
83d890b9 | 548 | if (sym->attr.cray_pointee) |
b122dc6a | 549 | gfc_finish_cray_pointee (decl, sym); |
83d890b9 | 550 | |
6de9cd9a DN |
551 | if (sym->attr.target) |
552 | TREE_ADDRESSABLE (decl) = 1; | |
553 | /* If it wasn't used we wouldn't be getting it. */ | |
554 | TREE_USED (decl) = 1; | |
555 | ||
1e4b1376 TB |
556 | if (sym->attr.flavor == FL_PARAMETER |
557 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) | |
558 | TREE_READONLY (decl) = 1; | |
559 | ||
6de9cd9a DN |
560 | /* Chain this decl to the pending declarations. Don't do pushdecl() |
561 | because this would add them to the current scope rather than the | |
562 | function scope. */ | |
563 | if (current_function_decl != NULL_TREE) | |
564 | { | |
d48734ef | 565 | if (sym->ns->proc_name->backend_decl == current_function_decl |
9abe5e56 | 566 | || sym->result == sym) |
6de9cd9a | 567 | gfc_add_decl_to_function (decl); |
9abe5e56 DK |
568 | else if (sym->ns->proc_name->attr.flavor == FL_LABEL) |
569 | /* This is a BLOCK construct. */ | |
570 | add_decl_as_local (decl); | |
6de9cd9a DN |
571 | else |
572 | gfc_add_decl_to_parent_function (decl); | |
573 | } | |
574 | ||
b122dc6a JJ |
575 | if (sym->attr.cray_pointee) |
576 | return; | |
577 | ||
5af6fa0b | 578 | if(sym->attr.is_bind_c == 1 && sym->binding_label) |
a8b3b0b6 CR |
579 | { |
580 | /* We need to put variables that are bind(c) into the common | |
581 | segment of the object file, because this is what C would do. | |
582 | gfortran would typically put them in either the BSS or | |
583 | initialized data segments, and only mark them as common if | |
584 | they were part of common blocks. However, if they are not put | |
93c71688 | 585 | into common space, then C cannot initialize global Fortran |
a8b3b0b6 CR |
586 | variables that it interoperates with and the draft says that |
587 | either Fortran or C should be able to initialize it (but not | |
588 | both, of course.) (J3/04-007, section 15.3). */ | |
589 | TREE_PUBLIC(decl) = 1; | |
590 | DECL_COMMON(decl) = 1; | |
591 | } | |
8b704316 | 592 | |
6de9cd9a DN |
593 | /* If a variable is USE associated, it's always external. */ |
594 | if (sym->attr.use_assoc) | |
595 | { | |
596 | DECL_EXTERNAL (decl) = 1; | |
597 | TREE_PUBLIC (decl) = 1; | |
598 | } | |
cb9e4f55 | 599 | else if (sym->module && !sym->attr.result && !sym->attr.dummy) |
6de9cd9a | 600 | { |
adf3ed3f | 601 | /* TODO: Don't set sym->module for result or dummy variables. */ |
d48734ef | 602 | gcc_assert (current_function_decl == NULL_TREE || sym->result == sym); |
58341a42 | 603 | |
ed4639a9 | 604 | if (sym->attr.access != ACCESS_PRIVATE || sym->attr.public_used) |
5af6fa0b | 605 | TREE_PUBLIC (decl) = 1; |
6de9cd9a DN |
606 | TREE_STATIC (decl) = 1; |
607 | } | |
608 | ||
b7b184a8 PT |
609 | /* Derived types are a bit peculiar because of the possibility of |
610 | a default initializer; this must be applied each time the variable | |
611 | comes into scope it therefore need not be static. These variables | |
612 | are SAVE_NONE but have an initializer. Otherwise explicitly | |
df2fba9e | 613 | initialized variables are SAVE_IMPLICIT and explicitly saved are |
b7b184a8 PT |
614 | SAVE_EXPLICIT. */ |
615 | if (!sym->attr.use_assoc | |
616 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
b8ff4e88 TB |
617 | || (sym->value && sym->ns->proc_name->attr.is_main_program) |
618 | || (gfc_option.coarray == GFC_FCOARRAY_LIB | |
619 | && sym->attr.codimension && !sym->attr.allocatable))) | |
6de9cd9a | 620 | TREE_STATIC (decl) = 1; |
775e6c3a TB |
621 | |
622 | if (sym->attr.volatile_) | |
623 | { | |
775e6c3a | 624 | TREE_THIS_VOLATILE (decl) = 1; |
c28d1d9b | 625 | TREE_SIDE_EFFECTS (decl) = 1; |
7b901ac4 KG |
626 | new_type = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE); |
627 | TREE_TYPE (decl) = new_type; | |
8b704316 | 628 | } |
775e6c3a | 629 | |
6de9cd9a DN |
630 | /* Keep variables larger than max-stack-var-size off stack. */ |
631 | if (!sym->ns->proc_name->attr.recursive | |
632 | && INTEGER_CST_P (DECL_SIZE_UNIT (decl)) | |
9eccb94d JJ |
633 | && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) |
634 | /* Put variable length auto array pointers always into stack. */ | |
635 | && (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE | |
636 | || sym->attr.dimension == 0 | |
637 | || sym->as->type != AS_EXPLICIT | |
638 | || sym->attr.pointer | |
639 | || sym->attr.allocatable) | |
640 | && !DECL_ARTIFICIAL (decl)) | |
6de9cd9a | 641 | TREE_STATIC (decl) = 1; |
6c7a4dfd JJ |
642 | |
643 | /* Handle threadprivate variables. */ | |
8893239d | 644 | if (sym->attr.threadprivate |
6c7a4dfd | 645 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) |
56363ffd | 646 | set_decl_tls_model (decl, decl_default_tls_model (decl)); |
92d28cbb JJ |
647 | |
648 | gfc_finish_decl_attrs (decl, &sym->attr); | |
6de9cd9a DN |
649 | } |
650 | ||
651 | ||
652 | /* Allocate the lang-specific part of a decl. */ | |
653 | ||
654 | void | |
655 | gfc_allocate_lang_decl (tree decl) | |
656 | { | |
92d28cbb JJ |
657 | if (DECL_LANG_SPECIFIC (decl) == NULL) |
658 | DECL_LANG_SPECIFIC (decl) = ggc_cleared_alloc<struct lang_decl> (); | |
6de9cd9a DN |
659 | } |
660 | ||
661 | /* Remember a symbol to generate initialization/cleanup code at function | |
662 | entry/exit. */ | |
663 | ||
664 | static void | |
665 | gfc_defer_symbol_init (gfc_symbol * sym) | |
666 | { | |
667 | gfc_symbol *p; | |
668 | gfc_symbol *last; | |
669 | gfc_symbol *head; | |
670 | ||
671 | /* Don't add a symbol twice. */ | |
672 | if (sym->tlink) | |
673 | return; | |
674 | ||
675 | last = head = sym->ns->proc_name; | |
676 | p = last->tlink; | |
677 | ||
678 | /* Make sure that setup code for dummy variables which are used in the | |
679 | setup of other variables is generated first. */ | |
680 | if (sym->attr.dummy) | |
681 | { | |
682 | /* Find the first dummy arg seen after us, or the first non-dummy arg. | |
683 | This is a circular list, so don't go past the head. */ | |
684 | while (p != head | |
685 | && (!p->attr.dummy || p->dummy_order > sym->dummy_order)) | |
686 | { | |
687 | last = p; | |
688 | p = p->tlink; | |
689 | } | |
690 | } | |
691 | /* Insert in between last and p. */ | |
692 | last->tlink = sym; | |
693 | sym->tlink = p; | |
694 | } | |
695 | ||
696 | ||
0101807c PT |
697 | /* Used in gfc_get_symbol_decl and gfc_get_derived_type to obtain the |
698 | backend_decl for a module symbol, if it all ready exists. If the | |
699 | module gsymbol does not exist, it is created. If the symbol does | |
700 | not exist, it is added to the gsymbol namespace. Returns true if | |
701 | an existing backend_decl is found. */ | |
702 | ||
703 | bool | |
704 | gfc_get_module_backend_decl (gfc_symbol *sym) | |
705 | { | |
706 | gfc_gsymbol *gsym; | |
707 | gfc_symbol *s; | |
708 | gfc_symtree *st; | |
709 | ||
710 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
711 | ||
712 | if (!gsym || (gsym->ns && gsym->type == GSYM_MODULE)) | |
713 | { | |
714 | st = NULL; | |
715 | s = NULL; | |
716 | ||
717 | if (gsym) | |
718 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
719 | ||
720 | if (!s) | |
721 | { | |
722 | if (!gsym) | |
723 | { | |
724 | gsym = gfc_get_gsymbol (sym->module); | |
725 | gsym->type = GSYM_MODULE; | |
726 | gsym->ns = gfc_get_namespace (NULL, 0); | |
727 | } | |
728 | ||
729 | st = gfc_new_symtree (&gsym->ns->sym_root, sym->name); | |
730 | st->n.sym = sym; | |
731 | sym->refs++; | |
732 | } | |
733 | else if (sym->attr.flavor == FL_DERIVED) | |
734 | { | |
c3f34952 TB |
735 | if (s && s->attr.flavor == FL_PROCEDURE) |
736 | { | |
737 | gfc_interface *intr; | |
738 | gcc_assert (s->attr.generic); | |
739 | for (intr = s->generic; intr; intr = intr->next) | |
740 | if (intr->sym->attr.flavor == FL_DERIVED) | |
741 | { | |
742 | s = intr->sym; | |
743 | break; | |
744 | } | |
745 | } | |
746 | ||
0101807c PT |
747 | if (!s->backend_decl) |
748 | s->backend_decl = gfc_get_derived_type (s); | |
749 | gfc_copy_dt_decls_ifequal (s, sym, true); | |
750 | return true; | |
751 | } | |
752 | else if (s->backend_decl) | |
753 | { | |
f29bda83 | 754 | if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) |
0101807c PT |
755 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, |
756 | true); | |
757 | else if (sym->ts.type == BT_CHARACTER) | |
758 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
759 | sym->backend_decl = s->backend_decl; | |
760 | return true; | |
761 | } | |
762 | } | |
763 | return false; | |
764 | } | |
765 | ||
766 | ||
6de9cd9a DN |
767 | /* Create an array index type variable with function scope. */ |
768 | ||
769 | static tree | |
770 | create_index_var (const char * pfx, int nest) | |
771 | { | |
772 | tree decl; | |
773 | ||
774 | decl = gfc_create_var_np (gfc_array_index_type, pfx); | |
775 | if (nest) | |
776 | gfc_add_decl_to_parent_function (decl); | |
777 | else | |
778 | gfc_add_decl_to_function (decl); | |
779 | return decl; | |
780 | } | |
781 | ||
782 | ||
783 | /* Create variables to hold all the non-constant bits of info for a | |
784 | descriptorless array. Remember these in the lang-specific part of the | |
785 | type. */ | |
786 | ||
787 | static void | |
788 | gfc_build_qualified_array (tree decl, gfc_symbol * sym) | |
789 | { | |
790 | tree type; | |
791 | int dim; | |
792 | int nest; | |
52bf62f9 | 793 | gfc_namespace* procns; |
6de9cd9a DN |
794 | |
795 | type = TREE_TYPE (decl); | |
796 | ||
797 | /* We just use the descriptor, if there is one. */ | |
798 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
799 | return; | |
800 | ||
6e45f57b | 801 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
52bf62f9 DK |
802 | procns = gfc_find_proc_namespace (sym->ns); |
803 | nest = (procns->proc_name->backend_decl != current_function_decl) | |
6de9cd9a DN |
804 | && !sym->attr.contained; |
805 | ||
b8ff4e88 | 806 | if (sym->attr.codimension && gfc_option.coarray == GFC_FCOARRAY_LIB |
aa13dc3c | 807 | && sym->as->type != AS_ASSUMED_SHAPE |
b8ff4e88 TB |
808 | && GFC_TYPE_ARRAY_CAF_TOKEN (type) == NULL_TREE) |
809 | { | |
810 | tree token; | |
811 | ||
15e2b595 TB |
812 | token = gfc_create_var_np (build_qualified_type (pvoid_type_node, |
813 | TYPE_QUAL_RESTRICT), | |
814 | "caf_token"); | |
b8ff4e88 TB |
815 | GFC_TYPE_ARRAY_CAF_TOKEN (type) = token; |
816 | DECL_ARTIFICIAL (token) = 1; | |
817 | TREE_STATIC (token) = 1; | |
818 | gfc_add_decl_to_function (token); | |
819 | } | |
820 | ||
6de9cd9a DN |
821 | for (dim = 0; dim < GFC_TYPE_ARRAY_RANK (type); dim++) |
822 | { | |
823 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
01306727 FXC |
824 | { |
825 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
826 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
827 | } | |
aa9c57ec | 828 | /* Don't try to use the unknown bound for assumed shape arrays. */ |
6de9cd9a DN |
829 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE |
830 | && (sym->as->type != AS_ASSUMED_SIZE | |
831 | || dim < GFC_TYPE_ARRAY_RANK (type) - 1)) | |
01306727 FXC |
832 | { |
833 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
834 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
835 | } | |
6de9cd9a DN |
836 | |
837 | if (GFC_TYPE_ARRAY_STRIDE (type, dim) == NULL_TREE) | |
01306727 FXC |
838 | { |
839 | GFC_TYPE_ARRAY_STRIDE (type, dim) = create_index_var ("stride", nest); | |
840 | TREE_NO_WARNING (GFC_TYPE_ARRAY_STRIDE (type, dim)) = 1; | |
841 | } | |
6de9cd9a | 842 | } |
a3935ffc TB |
843 | for (dim = GFC_TYPE_ARRAY_RANK (type); |
844 | dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type); dim++) | |
845 | { | |
846 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
847 | { | |
848 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
849 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
850 | } | |
851 | /* Don't try to use the unknown ubound for the last coarray dimension. */ | |
852 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE | |
853 | && dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type) - 1) | |
854 | { | |
855 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
856 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
857 | } | |
858 | } | |
6de9cd9a DN |
859 | if (GFC_TYPE_ARRAY_OFFSET (type) == NULL_TREE) |
860 | { | |
861 | GFC_TYPE_ARRAY_OFFSET (type) = gfc_create_var_np (gfc_array_index_type, | |
862 | "offset"); | |
01306727 FXC |
863 | TREE_NO_WARNING (GFC_TYPE_ARRAY_OFFSET (type)) = 1; |
864 | ||
6de9cd9a DN |
865 | if (nest) |
866 | gfc_add_decl_to_parent_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
867 | else | |
868 | gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
869 | } | |
417ab240 JJ |
870 | |
871 | if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE | |
872 | && sym->as->type != AS_ASSUMED_SIZE) | |
01306727 FXC |
873 | { |
874 | GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest); | |
875 | TREE_NO_WARNING (GFC_TYPE_ARRAY_SIZE (type)) = 1; | |
876 | } | |
417ab240 JJ |
877 | |
878 | if (POINTER_TYPE_P (type)) | |
879 | { | |
880 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type))); | |
881 | gcc_assert (TYPE_LANG_SPECIFIC (type) | |
882 | == TYPE_LANG_SPECIFIC (TREE_TYPE (type))); | |
883 | type = TREE_TYPE (type); | |
884 | } | |
885 | ||
886 | if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type)) | |
887 | { | |
888 | tree size, range; | |
889 | ||
bc98ed60 TB |
890 | size = fold_build2_loc (input_location, MINUS_EXPR, gfc_array_index_type, |
891 | GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node); | |
417ab240 JJ |
892 | range = build_range_type (gfc_array_index_type, gfc_index_zero_node, |
893 | size); | |
894 | TYPE_DOMAIN (type) = range; | |
895 | layout_type (type); | |
896 | } | |
25c29c56 | 897 | |
25c29c56 JJ |
898 | if (TYPE_NAME (type) != NULL_TREE |
899 | && GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1) != NULL_TREE | |
900 | && TREE_CODE (GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1)) == VAR_DECL) | |
901 | { | |
902 | tree gtype = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
903 | ||
904 | for (dim = 0; dim < sym->as->rank - 1; dim++) | |
905 | { | |
906 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
907 | gtype = TREE_TYPE (gtype); | |
908 | } | |
909 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
910 | if (TYPE_MAX_VALUE (TYPE_DOMAIN (gtype)) == NULL) | |
911 | TYPE_NAME (type) = NULL_TREE; | |
912 | } | |
913 | ||
914 | if (TYPE_NAME (type) == NULL_TREE) | |
915 | { | |
916 | tree gtype = TREE_TYPE (type), rtype, type_decl; | |
917 | ||
918 | for (dim = sym->as->rank - 1; dim >= 0; dim--) | |
919 | { | |
fcd3c5a9 JJ |
920 | tree lbound, ubound; |
921 | lbound = GFC_TYPE_ARRAY_LBOUND (type, dim); | |
922 | ubound = GFC_TYPE_ARRAY_UBOUND (type, dim); | |
923 | rtype = build_range_type (gfc_array_index_type, lbound, ubound); | |
25c29c56 | 924 | gtype = build_array_type (gtype, rtype); |
e429bb49 JJ |
925 | /* Ensure the bound variables aren't optimized out at -O0. |
926 | For -O1 and above they often will be optimized out, but | |
cd3f04c8 JJ |
927 | can be tracked by VTA. Also set DECL_NAMELESS, so that |
928 | the artificial lbound.N or ubound.N DECL_NAME doesn't | |
929 | end up in debug info. */ | |
fcd3c5a9 JJ |
930 | if (lbound && TREE_CODE (lbound) == VAR_DECL |
931 | && DECL_ARTIFICIAL (lbound) && DECL_IGNORED_P (lbound)) | |
932 | { | |
933 | if (DECL_NAME (lbound) | |
934 | && strstr (IDENTIFIER_POINTER (DECL_NAME (lbound)), | |
935 | "lbound") != 0) | |
cd3f04c8 | 936 | DECL_NAMELESS (lbound) = 1; |
fcd3c5a9 JJ |
937 | DECL_IGNORED_P (lbound) = 0; |
938 | } | |
939 | if (ubound && TREE_CODE (ubound) == VAR_DECL | |
940 | && DECL_ARTIFICIAL (ubound) && DECL_IGNORED_P (ubound)) | |
941 | { | |
942 | if (DECL_NAME (ubound) | |
943 | && strstr (IDENTIFIER_POINTER (DECL_NAME (ubound)), | |
944 | "ubound") != 0) | |
cd3f04c8 | 945 | DECL_NAMELESS (ubound) = 1; |
fcd3c5a9 JJ |
946 | DECL_IGNORED_P (ubound) = 0; |
947 | } | |
25c29c56 | 948 | } |
c2255bc4 AH |
949 | TYPE_NAME (type) = type_decl = build_decl (input_location, |
950 | TYPE_DECL, NULL, gtype); | |
25c29c56 JJ |
951 | DECL_ORIGINAL_TYPE (type_decl) = gtype; |
952 | } | |
6de9cd9a DN |
953 | } |
954 | ||
955 | ||
956 | /* For some dummy arguments we don't use the actual argument directly. | |
bae88af6 | 957 | Instead we create a local decl and use that. This allows us to perform |
6de9cd9a DN |
958 | initialization, and construct full type information. */ |
959 | ||
960 | static tree | |
961 | gfc_build_dummy_array_decl (gfc_symbol * sym, tree dummy) | |
962 | { | |
963 | tree decl; | |
964 | tree type; | |
965 | gfc_array_spec *as; | |
966 | char *name; | |
dcfef7d4 | 967 | gfc_packed packed; |
6de9cd9a DN |
968 | int n; |
969 | bool known_size; | |
970 | ||
c62c6622 TB |
971 | if (sym->attr.pointer || sym->attr.allocatable |
972 | || (sym->as && sym->as->type == AS_ASSUMED_RANK)) | |
6de9cd9a DN |
973 | return dummy; |
974 | ||
975 | /* Add to list of variables if not a fake result variable. */ | |
976 | if (sym->attr.result || sym->attr.dummy) | |
977 | gfc_defer_symbol_init (sym); | |
978 | ||
979 | type = TREE_TYPE (dummy); | |
6e45f57b | 980 | gcc_assert (TREE_CODE (dummy) == PARM_DECL |
6de9cd9a DN |
981 | && POINTER_TYPE_P (type)); |
982 | ||
f8d0aee5 | 983 | /* Do we know the element size? */ |
6de9cd9a | 984 | known_size = sym->ts.type != BT_CHARACTER |
bc21d315 | 985 | || INTEGER_CST_P (sym->ts.u.cl->backend_decl); |
8b704316 | 986 | |
6de9cd9a DN |
987 | if (known_size && !GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (type))) |
988 | { | |
989 | /* For descriptorless arrays with known element size the actual | |
990 | argument is sufficient. */ | |
6e45f57b | 991 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
6de9cd9a DN |
992 | gfc_build_qualified_array (dummy, sym); |
993 | return dummy; | |
994 | } | |
995 | ||
996 | type = TREE_TYPE (type); | |
997 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
998 | { | |
fa951694 | 999 | /* Create a descriptorless array pointer. */ |
6de9cd9a | 1000 | as = sym->as; |
dcfef7d4 | 1001 | packed = PACKED_NO; |
1c3339af FXC |
1002 | |
1003 | /* Even when -frepack-arrays is used, symbols with TARGET attribute | |
1004 | are not repacked. */ | |
1005 | if (!gfc_option.flag_repack_arrays || sym->attr.target) | |
6de9cd9a DN |
1006 | { |
1007 | if (as->type == AS_ASSUMED_SIZE) | |
dcfef7d4 | 1008 | packed = PACKED_FULL; |
6de9cd9a DN |
1009 | } |
1010 | else | |
1011 | { | |
1012 | if (as->type == AS_EXPLICIT) | |
1013 | { | |
dcfef7d4 | 1014 | packed = PACKED_FULL; |
6de9cd9a DN |
1015 | for (n = 0; n < as->rank; n++) |
1016 | { | |
1017 | if (!(as->upper[n] | |
1018 | && as->lower[n] | |
1019 | && as->upper[n]->expr_type == EXPR_CONSTANT | |
1020 | && as->lower[n]->expr_type == EXPR_CONSTANT)) | |
ae382ebd PCC |
1021 | { |
1022 | packed = PACKED_PARTIAL; | |
1023 | break; | |
1024 | } | |
6de9cd9a DN |
1025 | } |
1026 | } | |
1027 | else | |
dcfef7d4 | 1028 | packed = PACKED_PARTIAL; |
6de9cd9a DN |
1029 | } |
1030 | ||
1031 | type = gfc_typenode_for_spec (&sym->ts); | |
10174ddf MM |
1032 | type = gfc_get_nodesc_array_type (type, sym->as, packed, |
1033 | !sym->attr.target); | |
6de9cd9a DN |
1034 | } |
1035 | else | |
1036 | { | |
1037 | /* We now have an expression for the element size, so create a fully | |
1038 | qualified type. Reset sym->backend decl or this will just return the | |
1039 | old type. */ | |
3e978d30 | 1040 | DECL_ARTIFICIAL (sym->backend_decl) = 1; |
6de9cd9a DN |
1041 | sym->backend_decl = NULL_TREE; |
1042 | type = gfc_sym_type (sym); | |
dcfef7d4 | 1043 | packed = PACKED_FULL; |
6de9cd9a DN |
1044 | } |
1045 | ||
1046 | ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0); | |
c2255bc4 AH |
1047 | decl = build_decl (input_location, |
1048 | VAR_DECL, get_identifier (name), type); | |
6de9cd9a DN |
1049 | |
1050 | DECL_ARTIFICIAL (decl) = 1; | |
cd3f04c8 | 1051 | DECL_NAMELESS (decl) = 1; |
6de9cd9a DN |
1052 | TREE_PUBLIC (decl) = 0; |
1053 | TREE_STATIC (decl) = 0; | |
1054 | DECL_EXTERNAL (decl) = 0; | |
1055 | ||
879287d9 JJ |
1056 | /* Avoid uninitialized warnings for optional dummy arguments. */ |
1057 | if (sym->attr.optional) | |
1058 | TREE_NO_WARNING (decl) = 1; | |
1059 | ||
6de9cd9a DN |
1060 | /* We should never get deferred shape arrays here. We used to because of |
1061 | frontend bugs. */ | |
6e45f57b | 1062 | gcc_assert (sym->as->type != AS_DEFERRED); |
6de9cd9a | 1063 | |
dcfef7d4 TS |
1064 | if (packed == PACKED_PARTIAL) |
1065 | GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1; | |
1066 | else if (packed == PACKED_FULL) | |
1067 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
6de9cd9a DN |
1068 | |
1069 | gfc_build_qualified_array (decl, sym); | |
1070 | ||
1071 | if (DECL_LANG_SPECIFIC (dummy)) | |
1072 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (dummy); | |
1073 | else | |
1074 | gfc_allocate_lang_decl (decl); | |
1075 | ||
1076 | GFC_DECL_SAVED_DESCRIPTOR (decl) = dummy; | |
1077 | ||
1078 | if (sym->ns->proc_name->backend_decl == current_function_decl | |
1079 | || sym->attr.contained) | |
1080 | gfc_add_decl_to_function (decl); | |
1081 | else | |
1082 | gfc_add_decl_to_parent_function (decl); | |
1083 | ||
1084 | return decl; | |
1085 | } | |
1086 | ||
77f2a970 JJ |
1087 | /* For symbol SYM with GFC_DECL_SAVED_DESCRIPTOR used in contained |
1088 | function add a VAR_DECL to the current function with DECL_VALUE_EXPR | |
1089 | pointing to the artificial variable for debug info purposes. */ | |
1090 | ||
1091 | static void | |
1092 | gfc_nonlocal_dummy_array_decl (gfc_symbol *sym) | |
1093 | { | |
1094 | tree decl, dummy; | |
1095 | ||
1096 | if (! nonlocal_dummy_decl_pset) | |
6e2830c3 | 1097 | nonlocal_dummy_decl_pset = new hash_set<tree>; |
77f2a970 | 1098 | |
6e2830c3 | 1099 | if (nonlocal_dummy_decl_pset->add (sym->backend_decl)) |
77f2a970 JJ |
1100 | return; |
1101 | ||
1102 | dummy = GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl); | |
c2255bc4 | 1103 | decl = build_decl (input_location, VAR_DECL, DECL_NAME (dummy), |
77f2a970 JJ |
1104 | TREE_TYPE (sym->backend_decl)); |
1105 | DECL_ARTIFICIAL (decl) = 0; | |
1106 | TREE_USED (decl) = 1; | |
1107 | TREE_PUBLIC (decl) = 0; | |
1108 | TREE_STATIC (decl) = 0; | |
1109 | DECL_EXTERNAL (decl) = 0; | |
1110 | if (DECL_BY_REFERENCE (dummy)) | |
1111 | DECL_BY_REFERENCE (decl) = 1; | |
1112 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (sym->backend_decl); | |
1113 | SET_DECL_VALUE_EXPR (decl, sym->backend_decl); | |
1114 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
1115 | DECL_CONTEXT (decl) = DECL_CONTEXT (sym->backend_decl); | |
910ad8de | 1116 | DECL_CHAIN (decl) = nonlocal_dummy_decls; |
77f2a970 JJ |
1117 | nonlocal_dummy_decls = decl; |
1118 | } | |
6de9cd9a DN |
1119 | |
1120 | /* Return a constant or a variable to use as a string length. Does not | |
1121 | add the decl to the current scope. */ | |
1122 | ||
1123 | static tree | |
1124 | gfc_create_string_length (gfc_symbol * sym) | |
1125 | { | |
bc21d315 JW |
1126 | gcc_assert (sym->ts.u.cl); |
1127 | gfc_conv_const_charlen (sym->ts.u.cl); | |
cadb8f42 | 1128 | |
bc21d315 | 1129 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
6de9cd9a | 1130 | { |
cadb8f42 | 1131 | tree length; |
6052c299 | 1132 | const char *name; |
6de9cd9a | 1133 | |
26c08c03 TB |
1134 | /* The string length variable shall be in static memory if it is either |
1135 | explicitly SAVED, a module variable or with -fno-automatic. Only | |
1136 | relevant is "len=:" - otherwise, it is either a constant length or | |
1137 | it is an automatic variable. */ | |
36085529 TB |
1138 | bool static_length = sym->attr.save |
1139 | || sym->ns->proc_name->attr.flavor == FL_MODULE | |
26c08c03 TB |
1140 | || (gfc_option.flag_max_stack_var_size == 0 |
1141 | && sym->ts.deferred && !sym->attr.dummy | |
1142 | && !sym->attr.result && !sym->attr.function); | |
36085529 TB |
1143 | |
1144 | /* Also prefix the mangled name. We need to call GFC_PREFIX for static | |
1145 | variables as some systems do not support the "." in the assembler name. | |
1146 | For nonstatic variables, the "." does not appear in assembler. */ | |
1147 | if (static_length) | |
1148 | { | |
1149 | if (sym->module) | |
1150 | name = gfc_get_string (GFC_PREFIX ("%s_MOD_%s"), sym->module, | |
1151 | sym->name); | |
1152 | else | |
1153 | name = gfc_get_string (GFC_PREFIX ("%s"), sym->name); | |
1154 | } | |
1155 | else if (sym->module) | |
6052c299 TB |
1156 | name = gfc_get_string (".__%s_MOD_%s", sym->module, sym->name); |
1157 | else | |
1158 | name = gfc_get_string (".%s", sym->name); | |
1159 | ||
c2255bc4 AH |
1160 | length = build_decl (input_location, |
1161 | VAR_DECL, get_identifier (name), | |
d7177ab2 | 1162 | gfc_charlen_type_node); |
6de9cd9a DN |
1163 | DECL_ARTIFICIAL (length) = 1; |
1164 | TREE_USED (length) = 1; | |
417ab240 JJ |
1165 | if (sym->ns->proc_name->tlink != NULL) |
1166 | gfc_defer_symbol_init (sym); | |
cadb8f42 | 1167 | |
bc21d315 | 1168 | sym->ts.u.cl->backend_decl = length; |
6052c299 | 1169 | |
36085529 | 1170 | if (static_length) |
6052c299 TB |
1171 | TREE_STATIC (length) = 1; |
1172 | ||
1173 | if (sym->ns->proc_name->attr.flavor == FL_MODULE | |
1174 | && (sym->attr.access != ACCESS_PRIVATE || sym->attr.public_used)) | |
1175 | TREE_PUBLIC (length) = 1; | |
6de9cd9a DN |
1176 | } |
1177 | ||
bc21d315 JW |
1178 | gcc_assert (sym->ts.u.cl->backend_decl != NULL_TREE); |
1179 | return sym->ts.u.cl->backend_decl; | |
6de9cd9a DN |
1180 | } |
1181 | ||
910450c1 FW |
1182 | /* If a variable is assigned a label, we add another two auxiliary |
1183 | variables. */ | |
1184 | ||
1185 | static void | |
1186 | gfc_add_assign_aux_vars (gfc_symbol * sym) | |
1187 | { | |
1188 | tree addr; | |
1189 | tree length; | |
1190 | tree decl; | |
1191 | ||
1192 | gcc_assert (sym->backend_decl); | |
1193 | ||
1194 | decl = sym->backend_decl; | |
1195 | gfc_allocate_lang_decl (decl); | |
1196 | GFC_DECL_ASSIGN (decl) = 1; | |
c2255bc4 AH |
1197 | length = build_decl (input_location, |
1198 | VAR_DECL, create_tmp_var_name (sym->name), | |
910450c1 | 1199 | gfc_charlen_type_node); |
c2255bc4 AH |
1200 | addr = build_decl (input_location, |
1201 | VAR_DECL, create_tmp_var_name (sym->name), | |
910450c1 FW |
1202 | pvoid_type_node); |
1203 | gfc_finish_var_decl (length, sym); | |
1204 | gfc_finish_var_decl (addr, sym); | |
1205 | /* STRING_LENGTH is also used as flag. Less than -1 means that | |
1206 | ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the | |
1207 | target label's address. Otherwise, value is the length of a format string | |
1208 | and ASSIGN_ADDR is its address. */ | |
1209 | if (TREE_STATIC (length)) | |
df09d1d5 | 1210 | DECL_INITIAL (length) = build_int_cst (gfc_charlen_type_node, -2); |
910450c1 FW |
1211 | else |
1212 | gfc_defer_symbol_init (sym); | |
1213 | ||
1214 | GFC_DECL_STRING_LEN (decl) = length; | |
1215 | GFC_DECL_ASSIGN_ADDR (decl) = addr; | |
1216 | } | |
6de9cd9a | 1217 | |
08a6b8e0 TB |
1218 | |
1219 | static tree | |
1220 | add_attributes_to_decl (symbol_attribute sym_attr, tree list) | |
1221 | { | |
1222 | unsigned id; | |
1223 | tree attr; | |
1224 | ||
1225 | for (id = 0; id < EXT_ATTR_NUM; id++) | |
1226 | if (sym_attr.ext_attr & (1 << id)) | |
1227 | { | |
1228 | attr = build_tree_list ( | |
1229 | get_identifier (ext_attr_list[id].middle_end_name), | |
1230 | NULL_TREE); | |
1231 | list = chainon (list, attr); | |
1232 | } | |
1233 | ||
f014c653 JJ |
1234 | if (sym_attr.omp_declare_target) |
1235 | list = tree_cons (get_identifier ("omp declare target"), | |
1236 | NULL_TREE, list); | |
1237 | ||
08a6b8e0 TB |
1238 | return list; |
1239 | } | |
1240 | ||
1241 | ||
1d0134b3 JW |
1242 | static void build_function_decl (gfc_symbol * sym, bool global); |
1243 | ||
1244 | ||
6de9cd9a DN |
1245 | /* Return the decl for a gfc_symbol, create it if it doesn't already |
1246 | exist. */ | |
1247 | ||
1248 | tree | |
1249 | gfc_get_symbol_decl (gfc_symbol * sym) | |
1250 | { | |
1251 | tree decl; | |
1252 | tree length = NULL_TREE; | |
08a6b8e0 | 1253 | tree attributes; |
6de9cd9a | 1254 | int byref; |
be1f1ed9 | 1255 | bool intrinsic_array_parameter = false; |
431e4685 | 1256 | bool fun_or_res; |
6de9cd9a | 1257 | |
61321991 | 1258 | gcc_assert (sym->attr.referenced |
29be7510 JW |
1259 | || sym->attr.flavor == FL_PROCEDURE |
1260 | || sym->attr.use_assoc | |
1261 | || sym->ns->proc_name->attr.if_source == IFSRC_IFBODY | |
1262 | || (sym->module && sym->attr.if_source != IFSRC_DECL | |
1263 | && sym->backend_decl)); | |
6de9cd9a | 1264 | |
f64edc8b | 1265 | if (sym->ns && sym->ns->proc_name && sym->ns->proc_name->attr.function) |
6de9cd9a DN |
1266 | byref = gfc_return_by_reference (sym->ns->proc_name); |
1267 | else | |
1268 | byref = 0; | |
1269 | ||
eece1eb9 PT |
1270 | /* Make sure that the vtab for the declared type is completed. */ |
1271 | if (sym->ts.type == BT_CLASS) | |
1272 | { | |
7a08eda1 | 1273 | gfc_component *c = CLASS_DATA (sym); |
eece1eb9 | 1274 | if (!c->ts.u.derived->backend_decl) |
58eba515 JW |
1275 | { |
1276 | gfc_find_derived_vtab (c->ts.u.derived); | |
1277 | gfc_get_derived_type (sym->ts.u.derived); | |
1278 | } | |
eece1eb9 PT |
1279 | } |
1280 | ||
8d51f26f PT |
1281 | /* All deferred character length procedures need to retain the backend |
1282 | decl, which is a pointer to the character length in the caller's | |
1283 | namespace and to declare a local character length. */ | |
1284 | if (!byref && sym->attr.function | |
1285 | && sym->ts.type == BT_CHARACTER | |
1286 | && sym->ts.deferred | |
1287 | && sym->ts.u.cl->passed_length == NULL | |
1288 | && sym->ts.u.cl->backend_decl | |
1289 | && TREE_CODE (sym->ts.u.cl->backend_decl) == PARM_DECL) | |
1290 | { | |
1291 | sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1292 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1293 | length = gfc_create_string_length (sym); | |
1294 | } | |
1295 | ||
431e4685 TB |
1296 | fun_or_res = byref && (sym->attr.result |
1297 | || (sym->attr.function && sym->ts.deferred)); | |
1298 | if ((sym->attr.dummy && ! sym->attr.function) || fun_or_res) | |
6de9cd9a DN |
1299 | { |
1300 | /* Return via extra parameter. */ | |
1301 | if (sym->attr.result && byref | |
1302 | && !sym->backend_decl) | |
1303 | { | |
1304 | sym->backend_decl = | |
1305 | DECL_ARGUMENTS (sym->ns->proc_name->backend_decl); | |
d198b59a JJ |
1306 | /* For entry master function skip over the __entry |
1307 | argument. */ | |
1308 | if (sym->ns->proc_name->attr.entry_master) | |
910ad8de | 1309 | sym->backend_decl = DECL_CHAIN (sym->backend_decl); |
6de9cd9a DN |
1310 | } |
1311 | ||
1312 | /* Dummy variables should already have been created. */ | |
6e45f57b | 1313 | gcc_assert (sym->backend_decl); |
6de9cd9a DN |
1314 | |
1315 | /* Create a character length variable. */ | |
1316 | if (sym->ts.type == BT_CHARACTER) | |
1317 | { | |
8d51f26f PT |
1318 | /* For a deferred dummy, make a new string length variable. */ |
1319 | if (sym->ts.deferred | |
1320 | && | |
1321 | (sym->ts.u.cl->passed_length == sym->ts.u.cl->backend_decl)) | |
1322 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1323 | ||
431e4685 | 1324 | if (sym->ts.deferred && fun_or_res |
8d51f26f PT |
1325 | && sym->ts.u.cl->passed_length == NULL |
1326 | && sym->ts.u.cl->backend_decl) | |
1327 | { | |
1328 | sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1329 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1330 | } | |
1331 | ||
bc21d315 | 1332 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
417ab240 JJ |
1333 | length = gfc_create_string_length (sym); |
1334 | else | |
bc21d315 | 1335 | length = sym->ts.u.cl->backend_decl; |
417ab240 | 1336 | if (TREE_CODE (length) == VAR_DECL |
e5b16755 | 1337 | && DECL_FILE_SCOPE_P (length)) |
6de9cd9a | 1338 | { |
3e978d30 PT |
1339 | /* Add the string length to the same context as the symbol. */ |
1340 | if (DECL_CONTEXT (sym->backend_decl) == current_function_decl) | |
1341 | gfc_add_decl_to_function (length); | |
1342 | else | |
1343 | gfc_add_decl_to_parent_function (length); | |
1344 | ||
1345 | gcc_assert (DECL_CONTEXT (sym->backend_decl) == | |
1346 | DECL_CONTEXT (length)); | |
1347 | ||
417ab240 | 1348 | gfc_defer_symbol_init (sym); |
a41baa64 | 1349 | } |
6de9cd9a DN |
1350 | } |
1351 | ||
1352 | /* Use a copy of the descriptor for dummy arrays. */ | |
4ca9939b TB |
1353 | if ((sym->attr.dimension || sym->attr.codimension) |
1354 | && !TREE_USED (sym->backend_decl)) | |
6de9cd9a | 1355 | { |
3e978d30 PT |
1356 | decl = gfc_build_dummy_array_decl (sym, sym->backend_decl); |
1357 | /* Prevent the dummy from being detected as unused if it is copied. */ | |
1358 | if (sym->backend_decl != NULL && decl != sym->backend_decl) | |
1359 | DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
1360 | sym->backend_decl = decl; | |
6de9cd9a DN |
1361 | } |
1362 | ||
1363 | TREE_USED (sym->backend_decl) = 1; | |
910450c1 FW |
1364 | if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0) |
1365 | { | |
1366 | gfc_add_assign_aux_vars (sym); | |
1367 | } | |
77f2a970 JJ |
1368 | |
1369 | if (sym->attr.dimension | |
1370 | && DECL_LANG_SPECIFIC (sym->backend_decl) | |
1371 | && GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl) | |
1372 | && DECL_CONTEXT (sym->backend_decl) != current_function_decl) | |
1373 | gfc_nonlocal_dummy_array_decl (sym); | |
1374 | ||
c49ea23d PT |
1375 | if (sym->ts.type == BT_CLASS && sym->backend_decl) |
1376 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1377 | ||
1378 | if (sym->ts.type == BT_CLASS && sym->backend_decl) | |
1379 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1380 | return sym->backend_decl; | |
6de9cd9a DN |
1381 | } |
1382 | ||
1383 | if (sym->backend_decl) | |
1384 | return sym->backend_decl; | |
1385 | ||
4ed5664e TB |
1386 | /* Special case for array-valued named constants from intrinsic |
1387 | procedures; those are inlined. */ | |
8b198102 FXC |
1388 | if (sym->attr.use_assoc && sym->attr.flavor == FL_PARAMETER |
1389 | && (sym->from_intmod == INTMOD_ISO_FORTRAN_ENV | |
1390 | || sym->from_intmod == INTMOD_ISO_C_BINDING)) | |
4ed5664e TB |
1391 | intrinsic_array_parameter = true; |
1392 | ||
9fa52231 | 1393 | /* If use associated compilation, use the module |
43afc047 | 1394 | declaration. */ |
9fa52231 TB |
1395 | if ((sym->attr.flavor == FL_VARIABLE |
1396 | || sym->attr.flavor == FL_PARAMETER) | |
1397 | && sym->attr.use_assoc | |
1398 | && !intrinsic_array_parameter | |
1399 | && sym->module | |
1400 | && gfc_get_module_backend_decl (sym)) | |
c49ea23d PT |
1401 | { |
1402 | if (sym->ts.type == BT_CLASS && sym->backend_decl) | |
1403 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1404 | return sym->backend_decl; | |
1405 | } | |
3af8d8cb | 1406 | |
6de9cd9a DN |
1407 | if (sym->attr.flavor == FL_PROCEDURE) |
1408 | { | |
ab1668f6 | 1409 | /* Catch functions. Only used for actual parameters, |
1d0134b3 | 1410 | procedure pointers and procptr initialization targets. */ |
ab1668f6 TB |
1411 | if (sym->attr.use_assoc || sym->attr.intrinsic |
1412 | || sym->attr.if_source != IFSRC_DECL) | |
1d0134b3 JW |
1413 | { |
1414 | decl = gfc_get_extern_function_decl (sym); | |
1415 | gfc_set_decl_location (decl, &sym->declared_at); | |
1416 | } | |
1417 | else | |
1418 | { | |
1419 | if (!sym->backend_decl) | |
1420 | build_function_decl (sym, false); | |
1421 | decl = sym->backend_decl; | |
1422 | } | |
6de9cd9a DN |
1423 | return decl; |
1424 | } | |
1425 | ||
1426 | if (sym->attr.intrinsic) | |
1427 | internal_error ("intrinsic variable which isn't a procedure"); | |
1428 | ||
1429 | /* Create string length decl first so that they can be used in the | |
1430 | type declaration. */ | |
1431 | if (sym->ts.type == BT_CHARACTER) | |
1432 | length = gfc_create_string_length (sym); | |
1433 | ||
1434 | /* Create the decl for the variable. */ | |
c2255bc4 AH |
1435 | decl = build_decl (sym->declared_at.lb->location, |
1436 | VAR_DECL, gfc_sym_identifier (sym), gfc_sym_type (sym)); | |
c8cc8542 | 1437 | |
43ce5e52 FXC |
1438 | /* Add attributes to variables. Functions are handled elsewhere. */ |
1439 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); | |
1440 | decl_attributes (&decl, attributes, 0); | |
1441 | ||
f8d0aee5 | 1442 | /* Symbols from modules should have their assembler names mangled. |
6de9cd9a DN |
1443 | This is done here rather than in gfc_finish_var_decl because it |
1444 | is different for string length variables. */ | |
cb9e4f55 | 1445 | if (sym->module) |
a64f5186 | 1446 | { |
43ce5e52 | 1447 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); |
be1f1ed9 | 1448 | if (sym->attr.use_assoc && !intrinsic_array_parameter) |
a64f5186 JJ |
1449 | DECL_IGNORED_P (decl) = 1; |
1450 | } | |
6de9cd9a | 1451 | |
b3996898 JJ |
1452 | if (sym->attr.select_type_temporary) |
1453 | { | |
1454 | DECL_ARTIFICIAL (decl) = 1; | |
1455 | DECL_IGNORED_P (decl) = 1; | |
1456 | } | |
1457 | ||
4ca9939b | 1458 | if (sym->attr.dimension || sym->attr.codimension) |
6de9cd9a DN |
1459 | { |
1460 | /* Create variables to hold the non-constant bits of array info. */ | |
1461 | gfc_build_qualified_array (decl, sym); | |
1462 | ||
fe4e525c TB |
1463 | if (sym->attr.contiguous |
1464 | || ((sym->attr.allocatable || !sym->attr.dummy) && !sym->attr.pointer)) | |
6de9cd9a DN |
1465 | GFC_DECL_PACKED_ARRAY (decl) = 1; |
1466 | } | |
1467 | ||
1517fd57 | 1468 | /* Remember this variable for allocation/cleanup. */ |
9f3761c5 | 1469 | if (sym->attr.dimension || sym->attr.allocatable || sym->attr.codimension |
1517fd57 | 1470 | || (sym->ts.type == BT_CLASS && |
7a08eda1 JW |
1471 | (CLASS_DATA (sym)->attr.dimension |
1472 | || CLASS_DATA (sym)->attr.allocatable)) | |
ea8b72e6 TB |
1473 | || (sym->ts.type == BT_DERIVED |
1474 | && (sym->ts.u.derived->attr.alloc_comp | |
1475 | || (!sym->attr.pointer && !sym->attr.artificial && !sym->attr.save | |
1476 | && !sym->ns->proc_name->attr.is_main_program | |
1477 | && gfc_is_finalizable (sym->ts.u.derived, NULL)))) | |
1517fd57 JW |
1478 | /* This applies a derived type default initializer. */ |
1479 | || (sym->ts.type == BT_DERIVED | |
1480 | && sym->attr.save == SAVE_NONE | |
1481 | && !sym->attr.data | |
1482 | && !sym->attr.allocatable | |
1483 | && (sym->value && !sym->ns->proc_name->attr.is_main_program) | |
be1f1ed9 | 1484 | && !(sym->attr.use_assoc && !intrinsic_array_parameter))) |
b7b184a8 | 1485 | gfc_defer_symbol_init (sym); |
5046aff5 | 1486 | |
6de9cd9a DN |
1487 | gfc_finish_var_decl (decl, sym); |
1488 | ||
597073ac | 1489 | if (sym->ts.type == BT_CHARACTER) |
6de9cd9a | 1490 | { |
6de9cd9a DN |
1491 | /* Character variables need special handling. */ |
1492 | gfc_allocate_lang_decl (decl); | |
1493 | ||
597073ac | 1494 | if (TREE_CODE (length) != INTEGER_CST) |
6de9cd9a | 1495 | { |
6de9cd9a | 1496 | gfc_finish_var_decl (length, sym); |
6e45f57b | 1497 | gcc_assert (!sym->value); |
6de9cd9a | 1498 | } |
6de9cd9a | 1499 | } |
1d6b7f39 PT |
1500 | else if (sym->attr.subref_array_pointer) |
1501 | { | |
1502 | /* We need the span for these beasts. */ | |
1503 | gfc_allocate_lang_decl (decl); | |
1504 | } | |
1505 | ||
1506 | if (sym->attr.subref_array_pointer) | |
1507 | { | |
1508 | tree span; | |
1509 | GFC_DECL_SUBREF_ARRAY_P (decl) = 1; | |
c2255bc4 AH |
1510 | span = build_decl (input_location, |
1511 | VAR_DECL, create_tmp_var_name ("span"), | |
1d6b7f39 PT |
1512 | gfc_array_index_type); |
1513 | gfc_finish_var_decl (span, sym); | |
de870512 JJ |
1514 | TREE_STATIC (span) = TREE_STATIC (decl); |
1515 | DECL_ARTIFICIAL (span) = 1; | |
1d6b7f39 PT |
1516 | |
1517 | GFC_DECL_SPAN (decl) = span; | |
de870512 | 1518 | GFC_TYPE_ARRAY_SPAN (TREE_TYPE (decl)) = span; |
1d6b7f39 PT |
1519 | } |
1520 | ||
c49ea23d PT |
1521 | if (sym->ts.type == BT_CLASS) |
1522 | GFC_DECL_CLASS(decl) = 1; | |
1523 | ||
6de9cd9a DN |
1524 | sym->backend_decl = decl; |
1525 | ||
910450c1 | 1526 | if (sym->attr.assign) |
6c0e51c4 | 1527 | gfc_add_assign_aux_vars (sym); |
910450c1 | 1528 | |
be1f1ed9 TB |
1529 | if (intrinsic_array_parameter) |
1530 | { | |
1531 | TREE_STATIC (decl) = 1; | |
1532 | DECL_EXTERNAL (decl) = 0; | |
1533 | } | |
1534 | ||
1535 | if (TREE_STATIC (decl) | |
1536 | && !(sym->attr.use_assoc && !intrinsic_array_parameter) | |
2b56d6a4 TB |
1537 | && (sym->attr.save || sym->ns->proc_name->attr.is_main_program |
1538 | || gfc_option.flag_max_stack_var_size == 0 | |
b8ff4e88 | 1539 | || sym->attr.data || sym->ns->proc_name->attr.flavor == FL_MODULE) |
badd9e69 TB |
1540 | && (gfc_option.coarray != GFC_FCOARRAY_LIB |
1541 | || !sym->attr.codimension || sym->attr.allocatable)) | |
2b56d6a4 TB |
1542 | { |
1543 | /* Add static initializer. For procedures, it is only needed if | |
1544 | SAVE is specified otherwise they need to be reinitialized | |
1545 | every time the procedure is entered. The TREE_STATIC is | |
1546 | in this case due to -fmax-stack-var-size=. */ | |
2cc6320d | 1547 | |
597073ac | 1548 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
2cc6320d JW |
1549 | TREE_TYPE (decl), sym->attr.dimension |
1550 | || (sym->attr.codimension | |
1551 | && sym->attr.allocatable), | |
1552 | sym->attr.pointer || sym->attr.allocatable | |
1553 | || sym->ts.type == BT_CLASS, | |
1554 | sym->attr.proc_pointer); | |
597073ac PB |
1555 | } |
1556 | ||
77f2a970 JJ |
1557 | if (!TREE_STATIC (decl) |
1558 | && POINTER_TYPE_P (TREE_TYPE (decl)) | |
1559 | && !sym->attr.pointer | |
1560 | && !sym->attr.allocatable | |
b3996898 JJ |
1561 | && !sym->attr.proc_pointer |
1562 | && !sym->attr.select_type_temporary) | |
77f2a970 JJ |
1563 | DECL_BY_REFERENCE (decl) = 1; |
1564 | ||
92d28cbb JJ |
1565 | if (sym->attr.associate_var) |
1566 | GFC_DECL_ASSOCIATE_VAR_P (decl) = 1; | |
1567 | ||
cf651ca2 TB |
1568 | if (sym->attr.vtab |
1569 | || (sym->name[0] == '_' && strncmp ("__def_init", sym->name, 10) == 0)) | |
755634e6 | 1570 | TREE_READONLY (decl) = 1; |
cf651ca2 | 1571 | |
6de9cd9a DN |
1572 | return decl; |
1573 | } | |
1574 | ||
1575 | ||
7b5b57b7 PB |
1576 | /* Substitute a temporary variable in place of the real one. */ |
1577 | ||
1578 | void | |
1579 | gfc_shadow_sym (gfc_symbol * sym, tree decl, gfc_saved_var * save) | |
1580 | { | |
1581 | save->attr = sym->attr; | |
1582 | save->decl = sym->backend_decl; | |
1583 | ||
1584 | gfc_clear_attr (&sym->attr); | |
1585 | sym->attr.referenced = 1; | |
1586 | sym->attr.flavor = FL_VARIABLE; | |
1587 | ||
1588 | sym->backend_decl = decl; | |
1589 | } | |
1590 | ||
1591 | ||
1592 | /* Restore the original variable. */ | |
1593 | ||
1594 | void | |
1595 | gfc_restore_sym (gfc_symbol * sym, gfc_saved_var * save) | |
1596 | { | |
1597 | sym->attr = save->attr; | |
1598 | sym->backend_decl = save->decl; | |
1599 | } | |
1600 | ||
1601 | ||
8fb74da4 JW |
1602 | /* Declare a procedure pointer. */ |
1603 | ||
1604 | static tree | |
1605 | get_proc_pointer_decl (gfc_symbol *sym) | |
1606 | { | |
1607 | tree decl; | |
08a6b8e0 | 1608 | tree attributes; |
8fb74da4 JW |
1609 | |
1610 | decl = sym->backend_decl; | |
1611 | if (decl) | |
1612 | return decl; | |
1613 | ||
c2255bc4 AH |
1614 | decl = build_decl (input_location, |
1615 | VAR_DECL, get_identifier (sym->name), | |
8fb74da4 JW |
1616 | build_pointer_type (gfc_get_function_type (sym))); |
1617 | ||
5e4404b8 JW |
1618 | if (sym->module) |
1619 | { | |
1620 | /* Apply name mangling. */ | |
1621 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); | |
1622 | if (sym->attr.use_assoc) | |
1623 | DECL_IGNORED_P (decl) = 1; | |
1624 | } | |
8b704316 | 1625 | |
06c7153f TB |
1626 | if ((sym->ns->proc_name |
1627 | && sym->ns->proc_name->backend_decl == current_function_decl) | |
8fb74da4 JW |
1628 | || sym->attr.contained) |
1629 | gfc_add_decl_to_function (decl); | |
6e0d2de7 | 1630 | else if (sym->ns->proc_name->attr.flavor != FL_MODULE) |
8fb74da4 JW |
1631 | gfc_add_decl_to_parent_function (decl); |
1632 | ||
1633 | sym->backend_decl = decl; | |
1634 | ||
6e0d2de7 JW |
1635 | /* If a variable is USE associated, it's always external. */ |
1636 | if (sym->attr.use_assoc) | |
1637 | { | |
1638 | DECL_EXTERNAL (decl) = 1; | |
1639 | TREE_PUBLIC (decl) = 1; | |
1640 | } | |
1641 | else if (sym->module && sym->ns->proc_name->attr.flavor == FL_MODULE) | |
1642 | { | |
1643 | /* This is the declaration of a module variable. */ | |
1644 | TREE_PUBLIC (decl) = 1; | |
1645 | TREE_STATIC (decl) = 1; | |
1646 | } | |
1647 | ||
8fb74da4 JW |
1648 | if (!sym->attr.use_assoc |
1649 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
1650 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
1651 | TREE_STATIC (decl) = 1; | |
1652 | ||
1653 | if (TREE_STATIC (decl) && sym->value) | |
1654 | { | |
1655 | /* Add static initializer. */ | |
1656 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
1d0134b3 JW |
1657 | TREE_TYPE (decl), |
1658 | sym->attr.dimension, | |
1659 | false, true); | |
8fb74da4 JW |
1660 | } |
1661 | ||
a6c975bd JJ |
1662 | /* Handle threadprivate procedure pointers. */ |
1663 | if (sym->attr.threadprivate | |
1664 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) | |
56363ffd | 1665 | set_decl_tls_model (decl, decl_default_tls_model (decl)); |
a6c975bd | 1666 | |
08a6b8e0 TB |
1667 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1668 | decl_attributes (&decl, attributes, 0); | |
1669 | ||
8fb74da4 JW |
1670 | return decl; |
1671 | } | |
1672 | ||
1673 | ||
6de9cd9a DN |
1674 | /* Get a basic decl for an external function. */ |
1675 | ||
1676 | tree | |
1677 | gfc_get_extern_function_decl (gfc_symbol * sym) | |
1678 | { | |
1679 | tree type; | |
1680 | tree fndecl; | |
08a6b8e0 | 1681 | tree attributes; |
6de9cd9a DN |
1682 | gfc_expr e; |
1683 | gfc_intrinsic_sym *isym; | |
1684 | gfc_expr argexpr; | |
e6472bce | 1685 | char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */ |
6de9cd9a DN |
1686 | tree name; |
1687 | tree mangled_name; | |
71a7778c | 1688 | gfc_gsymbol *gsym; |
6de9cd9a DN |
1689 | |
1690 | if (sym->backend_decl) | |
1691 | return sym->backend_decl; | |
1692 | ||
3d79abbd PB |
1693 | /* We should never be creating external decls for alternate entry points. |
1694 | The procedure may be an alternate entry point, but we don't want/need | |
1695 | to know that. */ | |
6e45f57b | 1696 | gcc_assert (!(sym->attr.entry || sym->attr.entry_master)); |
3d79abbd | 1697 | |
8fb74da4 JW |
1698 | if (sym->attr.proc_pointer) |
1699 | return get_proc_pointer_decl (sym); | |
1700 | ||
71a7778c PT |
1701 | /* See if this is an external procedure from the same file. If so, |
1702 | return the backend_decl. */ | |
f11de7c5 TB |
1703 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->binding_label |
1704 | ? sym->binding_label : sym->name); | |
71a7778c | 1705 | |
77f8682b TB |
1706 | if (gsym && !gsym->defined) |
1707 | gsym = NULL; | |
1708 | ||
1709 | /* This can happen because of C binding. */ | |
1710 | if (gsym && gsym->ns && gsym->ns->proc_name | |
1711 | && gsym->ns->proc_name->attr.flavor == FL_MODULE) | |
1712 | goto module_sym; | |
1713 | ||
9fa52231 TB |
1714 | if ((!sym->attr.use_assoc || sym->attr.if_source != IFSRC_DECL) |
1715 | && !sym->backend_decl | |
1716 | && gsym && gsym->ns | |
1717 | && ((gsym->type == GSYM_SUBROUTINE) || (gsym->type == GSYM_FUNCTION)) | |
1718 | && (gsym->ns->proc_name->backend_decl || !sym->attr.intrinsic)) | |
71a7778c | 1719 | { |
fb55ca75 TB |
1720 | if (!gsym->ns->proc_name->backend_decl) |
1721 | { | |
1722 | /* By construction, the external function cannot be | |
1723 | a contained procedure. */ | |
1724 | locus old_loc; | |
fb55ca75 | 1725 | |
363aab21 | 1726 | gfc_save_backend_locus (&old_loc); |
af16bc76 | 1727 | push_cfun (NULL); |
fb55ca75 TB |
1728 | |
1729 | gfc_create_function_decl (gsym->ns, true); | |
1730 | ||
1731 | pop_cfun (); | |
363aab21 | 1732 | gfc_restore_backend_locus (&old_loc); |
fb55ca75 TB |
1733 | } |
1734 | ||
71a7778c PT |
1735 | /* If the namespace has entries, the proc_name is the |
1736 | entry master. Find the entry and use its backend_decl. | |
1737 | otherwise, use the proc_name backend_decl. */ | |
1738 | if (gsym->ns->entries) | |
1739 | { | |
1740 | gfc_entry_list *entry = gsym->ns->entries; | |
1741 | ||
1742 | for (; entry; entry = entry->next) | |
1743 | { | |
1744 | if (strcmp (gsym->name, entry->sym->name) == 0) | |
1745 | { | |
1746 | sym->backend_decl = entry->sym->backend_decl; | |
1747 | break; | |
1748 | } | |
1749 | } | |
1750 | } | |
1751 | else | |
6a018495 | 1752 | sym->backend_decl = gsym->ns->proc_name->backend_decl; |
71a7778c PT |
1753 | |
1754 | if (sym->backend_decl) | |
6a018495 TB |
1755 | { |
1756 | /* Avoid problems of double deallocation of the backend declaration | |
1757 | later in gfc_trans_use_stmts; cf. PR 45087. */ | |
1758 | if (sym->attr.if_source != IFSRC_DECL && sym->attr.use_assoc) | |
1759 | sym->attr.use_assoc = 0; | |
1760 | ||
1761 | return sym->backend_decl; | |
1762 | } | |
71a7778c PT |
1763 | } |
1764 | ||
3af8d8cb PT |
1765 | /* See if this is a module procedure from the same file. If so, |
1766 | return the backend_decl. */ | |
1767 | if (sym->module) | |
1768 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
1769 | ||
77f8682b TB |
1770 | module_sym: |
1771 | if (gsym && gsym->ns | |
1772 | && (gsym->type == GSYM_MODULE | |
1773 | || (gsym->ns->proc_name && gsym->ns->proc_name->attr.flavor == FL_MODULE))) | |
3af8d8cb PT |
1774 | { |
1775 | gfc_symbol *s; | |
1776 | ||
1777 | s = NULL; | |
77f8682b TB |
1778 | if (gsym->type == GSYM_MODULE) |
1779 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
1780 | else | |
1781 | gfc_find_symbol (gsym->sym_name, gsym->ns, 0, &s); | |
1782 | ||
3af8d8cb PT |
1783 | if (s && s->backend_decl) |
1784 | { | |
f29bda83 TB |
1785 | if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) |
1786 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, | |
1787 | true); | |
1788 | else if (sym->ts.type == BT_CHARACTER) | |
1789 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
3af8d8cb PT |
1790 | sym->backend_decl = s->backend_decl; |
1791 | return sym->backend_decl; | |
1792 | } | |
1793 | } | |
1794 | ||
6de9cd9a DN |
1795 | if (sym->attr.intrinsic) |
1796 | { | |
1797 | /* Call the resolution function to get the actual name. This is | |
1798 | a nasty hack which relies on the resolution functions only looking | |
1799 | at the first argument. We pass NULL for the second argument | |
1800 | otherwise things like AINT get confused. */ | |
1801 | isym = gfc_find_function (sym->name); | |
6e45f57b | 1802 | gcc_assert (isym->resolve.f0 != NULL); |
6de9cd9a DN |
1803 | |
1804 | memset (&e, 0, sizeof (e)); | |
1805 | e.expr_type = EXPR_FUNCTION; | |
1806 | ||
1807 | memset (&argexpr, 0, sizeof (argexpr)); | |
6e45f57b | 1808 | gcc_assert (isym->formal); |
6de9cd9a DN |
1809 | argexpr.ts = isym->formal->ts; |
1810 | ||
1811 | if (isym->formal->next == NULL) | |
1812 | isym->resolve.f1 (&e, &argexpr); | |
1813 | else | |
1814 | { | |
0e7e7e6e FXC |
1815 | if (isym->formal->next->next == NULL) |
1816 | isym->resolve.f2 (&e, &argexpr, NULL); | |
1817 | else | |
1818 | { | |
5cda5098 FXC |
1819 | if (isym->formal->next->next->next == NULL) |
1820 | isym->resolve.f3 (&e, &argexpr, NULL, NULL); | |
1821 | else | |
1822 | { | |
1823 | /* All specific intrinsics take less than 5 arguments. */ | |
1824 | gcc_assert (isym->formal->next->next->next->next == NULL); | |
1825 | isym->resolve.f4 (&e, &argexpr, NULL, NULL, NULL); | |
1826 | } | |
0e7e7e6e | 1827 | } |
6de9cd9a | 1828 | } |
973ff4c0 TS |
1829 | |
1830 | if (gfc_option.flag_f2c | |
1831 | && ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind) | |
1832 | || e.ts.type == BT_COMPLEX)) | |
1833 | { | |
1834 | /* Specific which needs a different implementation if f2c | |
1835 | calling conventions are used. */ | |
e6472bce | 1836 | sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name); |
973ff4c0 TS |
1837 | } |
1838 | else | |
e6472bce | 1839 | sprintf (s, "_gfortran_specific%s", e.value.function.name); |
973ff4c0 | 1840 | |
6de9cd9a DN |
1841 | name = get_identifier (s); |
1842 | mangled_name = name; | |
1843 | } | |
1844 | else | |
1845 | { | |
1846 | name = gfc_sym_identifier (sym); | |
1847 | mangled_name = gfc_sym_mangled_function_id (sym); | |
1848 | } | |
1849 | ||
1850 | type = gfc_get_function_type (sym); | |
c2255bc4 AH |
1851 | fndecl = build_decl (input_location, |
1852 | FUNCTION_DECL, name, type); | |
6de9cd9a | 1853 | |
384f586a KT |
1854 | /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; |
1855 | TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
dd5a833e | 1856 | the opposite of declaring a function as static in C). */ |
384f586a KT |
1857 | DECL_EXTERNAL (fndecl) = 1; |
1858 | TREE_PUBLIC (fndecl) = 1; | |
1859 | ||
43ce5e52 FXC |
1860 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1861 | decl_attributes (&fndecl, attributes, 0); | |
1862 | ||
1863 | gfc_set_decl_assembler_name (fndecl, mangled_name); | |
6de9cd9a DN |
1864 | |
1865 | /* Set the context of this decl. */ | |
1866 | if (0 && sym->ns && sym->ns->proc_name) | |
1867 | { | |
1868 | /* TODO: Add external decls to the appropriate scope. */ | |
1869 | DECL_CONTEXT (fndecl) = sym->ns->proc_name->backend_decl; | |
1870 | } | |
1871 | else | |
1872 | { | |
f8d0aee5 | 1873 | /* Global declaration, e.g. intrinsic subroutine. */ |
6de9cd9a DN |
1874 | DECL_CONTEXT (fndecl) = NULL_TREE; |
1875 | } | |
1876 | ||
6de9cd9a DN |
1877 | /* Set attributes for PURE functions. A call to PURE function in the |
1878 | Fortran 95 sense is both pure and without side effects in the C | |
1879 | sense. */ | |
033418dc | 1880 | if (sym->attr.pure || sym->attr.implicit_pure) |
6de9cd9a | 1881 | { |
cf013e9f | 1882 | if (sym->attr.function && !gfc_return_by_reference (sym)) |
becfd6e5 | 1883 | DECL_PURE_P (fndecl) = 1; |
b7e6a6b3 TS |
1884 | /* TODO: check if pure SUBROUTINEs don't have INTENT(OUT) |
1885 | parameters and don't use alternate returns (is this | |
1886 | allowed?). In that case, calls to them are meaningless, and | |
3d79abbd | 1887 | can be optimized away. See also in build_function_decl(). */ |
b7e6a6b3 | 1888 | TREE_SIDE_EFFECTS (fndecl) = 0; |
6de9cd9a DN |
1889 | } |
1890 | ||
fe58e076 TK |
1891 | /* Mark non-returning functions. */ |
1892 | if (sym->attr.noreturn) | |
1893 | TREE_THIS_VOLATILE(fndecl) = 1; | |
1894 | ||
6de9cd9a DN |
1895 | sym->backend_decl = fndecl; |
1896 | ||
1897 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1898 | pushdecl_top_level (fndecl); | |
1899 | ||
dd2fc525 JJ |
1900 | if (sym->formal_ns |
1901 | && sym->formal_ns->proc_name == sym | |
1902 | && sym->formal_ns->omp_declare_simd) | |
1903 | gfc_trans_omp_declare_simd (sym->formal_ns); | |
1904 | ||
6de9cd9a DN |
1905 | return fndecl; |
1906 | } | |
1907 | ||
1908 | ||
1909 | /* Create a declaration for a procedure. For external functions (in the C | |
3d79abbd PB |
1910 | sense) use gfc_get_extern_function_decl. HAS_ENTRIES is true if this is |
1911 | a master function with alternate entry points. */ | |
6de9cd9a | 1912 | |
3d79abbd | 1913 | static void |
fb55ca75 | 1914 | build_function_decl (gfc_symbol * sym, bool global) |
6de9cd9a | 1915 | { |
08a6b8e0 | 1916 | tree fndecl, type, attributes; |
6de9cd9a | 1917 | symbol_attribute attr; |
3d79abbd | 1918 | tree result_decl; |
6de9cd9a DN |
1919 | gfc_formal_arglist *f; |
1920 | ||
6e45f57b | 1921 | gcc_assert (!sym->attr.external); |
6de9cd9a | 1922 | |
1d0134b3 JW |
1923 | if (sym->backend_decl) |
1924 | return; | |
1925 | ||
c8cc8542 PB |
1926 | /* Set the line and filename. sym->declared_at seems to point to the |
1927 | last statement for subroutines, but it'll do for now. */ | |
1928 | gfc_set_backend_locus (&sym->declared_at); | |
1929 | ||
6de9cd9a | 1930 | /* Allow only one nesting level. Allow public declarations. */ |
6e45f57b | 1931 | gcc_assert (current_function_decl == NULL_TREE |
e5b16755 RG |
1932 | || DECL_FILE_SCOPE_P (current_function_decl) |
1933 | || (TREE_CODE (DECL_CONTEXT (current_function_decl)) | |
1934 | == NAMESPACE_DECL)); | |
6de9cd9a DN |
1935 | |
1936 | type = gfc_get_function_type (sym); | |
c2255bc4 AH |
1937 | fndecl = build_decl (input_location, |
1938 | FUNCTION_DECL, gfc_sym_identifier (sym), type); | |
6de9cd9a | 1939 | |
43ce5e52 FXC |
1940 | attr = sym->attr; |
1941 | ||
384f586a KT |
1942 | /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; |
1943 | TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
dd5a833e | 1944 | the opposite of declaring a function as static in C). */ |
384f586a KT |
1945 | DECL_EXTERNAL (fndecl) = 0; |
1946 | ||
58341a42 TB |
1947 | if (sym->attr.access == ACCESS_UNKNOWN && sym->module |
1948 | && (sym->ns->default_access == ACCESS_PRIVATE | |
1949 | || (sym->ns->default_access == ACCESS_UNKNOWN | |
1950 | && gfc_option.flag_module_private))) | |
1951 | sym->attr.access = ACCESS_PRIVATE; | |
1952 | ||
384f586a | 1953 | if (!current_function_decl |
5af6fa0b | 1954 | && !sym->attr.entry_master && !sym->attr.is_main_program |
cdd244b8 TB |
1955 | && (sym->attr.access != ACCESS_PRIVATE || sym->binding_label |
1956 | || sym->attr.public_used)) | |
384f586a KT |
1957 | TREE_PUBLIC (fndecl) = 1; |
1958 | ||
29be7510 JW |
1959 | if (sym->attr.referenced || sym->attr.entry_master) |
1960 | TREE_USED (fndecl) = 1; | |
1961 | ||
43ce5e52 FXC |
1962 | attributes = add_attributes_to_decl (attr, NULL_TREE); |
1963 | decl_attributes (&fndecl, attributes, 0); | |
1964 | ||
6de9cd9a | 1965 | /* Figure out the return type of the declared function, and build a |
f8d0aee5 | 1966 | RESULT_DECL for it. If this is a subroutine with alternate |
6de9cd9a | 1967 | returns, build a RESULT_DECL for it. */ |
6de9cd9a DN |
1968 | result_decl = NULL_TREE; |
1969 | /* TODO: Shouldn't this just be TREE_TYPE (TREE_TYPE (fndecl)). */ | |
1970 | if (attr.function) | |
1971 | { | |
1972 | if (gfc_return_by_reference (sym)) | |
1973 | type = void_type_node; | |
1974 | else | |
1975 | { | |
1976 | if (sym->result != sym) | |
1977 | result_decl = gfc_sym_identifier (sym->result); | |
1978 | ||
1979 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
1980 | } | |
1981 | } | |
1982 | else | |
1983 | { | |
1984 | /* Look for alternate return placeholders. */ | |
1985 | int has_alternate_returns = 0; | |
4cbc9039 | 1986 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
6de9cd9a DN |
1987 | { |
1988 | if (f->sym == NULL) | |
1989 | { | |
1990 | has_alternate_returns = 1; | |
1991 | break; | |
1992 | } | |
1993 | } | |
1994 | ||
1995 | if (has_alternate_returns) | |
1996 | type = integer_type_node; | |
1997 | else | |
1998 | type = void_type_node; | |
1999 | } | |
2000 | ||
c2255bc4 AH |
2001 | result_decl = build_decl (input_location, |
2002 | RESULT_DECL, result_decl, type); | |
b785f485 RH |
2003 | DECL_ARTIFICIAL (result_decl) = 1; |
2004 | DECL_IGNORED_P (result_decl) = 1; | |
6de9cd9a DN |
2005 | DECL_CONTEXT (result_decl) = fndecl; |
2006 | DECL_RESULT (fndecl) = result_decl; | |
2007 | ||
2008 | /* Don't call layout_decl for a RESULT_DECL. | |
f8d0aee5 | 2009 | layout_decl (result_decl, 0); */ |
6de9cd9a | 2010 | |
6de9cd9a | 2011 | /* TREE_STATIC means the function body is defined here. */ |
1d754240 | 2012 | TREE_STATIC (fndecl) = 1; |
6de9cd9a | 2013 | |
f8d0aee5 | 2014 | /* Set attributes for PURE functions. A call to a PURE function in the |
6de9cd9a DN |
2015 | Fortran 95 sense is both pure and without side effects in the C |
2016 | sense. */ | |
033418dc | 2017 | if (attr.pure || attr.implicit_pure) |
6de9cd9a | 2018 | { |
b7e6a6b3 | 2019 | /* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments |
86bf520d | 2020 | including an alternate return. In that case it can also be |
1f2959f0 | 2021 | marked as PURE. See also in gfc_get_extern_function_decl(). */ |
a01db3bf | 2022 | if (attr.function && !gfc_return_by_reference (sym)) |
becfd6e5 | 2023 | DECL_PURE_P (fndecl) = 1; |
6de9cd9a DN |
2024 | TREE_SIDE_EFFECTS (fndecl) = 0; |
2025 | } | |
2026 | ||
08a6b8e0 | 2027 | |
6de9cd9a DN |
2028 | /* Layout the function declaration and put it in the binding level |
2029 | of the current function. */ | |
fb55ca75 | 2030 | |
755634e6 | 2031 | if (global) |
fb55ca75 TB |
2032 | pushdecl_top_level (fndecl); |
2033 | else | |
2034 | pushdecl (fndecl); | |
3d79abbd | 2035 | |
e5b16755 RG |
2036 | /* Perform name mangling if this is a top level or module procedure. */ |
2037 | if (current_function_decl == NULL_TREE) | |
2038 | gfc_set_decl_assembler_name (fndecl, gfc_sym_mangled_function_id (sym)); | |
2039 | ||
3d79abbd PB |
2040 | sym->backend_decl = fndecl; |
2041 | } | |
2042 | ||
2043 | ||
2044 | /* Create the DECL_ARGUMENTS for a procedure. */ | |
2045 | ||
2046 | static void | |
2047 | create_function_arglist (gfc_symbol * sym) | |
2048 | { | |
2049 | tree fndecl; | |
2050 | gfc_formal_arglist *f; | |
417ab240 JJ |
2051 | tree typelist, hidden_typelist; |
2052 | tree arglist, hidden_arglist; | |
3d79abbd PB |
2053 | tree type; |
2054 | tree parm; | |
2055 | ||
2056 | fndecl = sym->backend_decl; | |
2057 | ||
1d754240 PB |
2058 | /* Build formal argument list. Make sure that their TREE_CONTEXT is |
2059 | the new FUNCTION_DECL node. */ | |
1d754240 | 2060 | arglist = NULL_TREE; |
417ab240 | 2061 | hidden_arglist = NULL_TREE; |
1d754240 | 2062 | typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
3d79abbd PB |
2063 | |
2064 | if (sym->attr.entry_master) | |
2065 | { | |
2066 | type = TREE_VALUE (typelist); | |
c2255bc4 AH |
2067 | parm = build_decl (input_location, |
2068 | PARM_DECL, get_identifier ("__entry"), type); | |
8b704316 | 2069 | |
3d79abbd PB |
2070 | DECL_CONTEXT (parm) = fndecl; |
2071 | DECL_ARG_TYPE (parm) = type; | |
2072 | TREE_READONLY (parm) = 1; | |
faf28b3a | 2073 | gfc_finish_decl (parm); |
3e978d30 | 2074 | DECL_ARTIFICIAL (parm) = 1; |
3d79abbd PB |
2075 | |
2076 | arglist = chainon (arglist, parm); | |
2077 | typelist = TREE_CHAIN (typelist); | |
2078 | } | |
2079 | ||
1d754240 | 2080 | if (gfc_return_by_reference (sym)) |
6de9cd9a | 2081 | { |
417ab240 | 2082 | tree type = TREE_VALUE (typelist), length = NULL; |
6de9cd9a | 2083 | |
1d754240 PB |
2084 | if (sym->ts.type == BT_CHARACTER) |
2085 | { | |
1d754240 | 2086 | /* Length of character result. */ |
417ab240 | 2087 | tree len_type = TREE_VALUE (TREE_CHAIN (typelist)); |
6de9cd9a | 2088 | |
c2255bc4 AH |
2089 | length = build_decl (input_location, |
2090 | PARM_DECL, | |
1d754240 | 2091 | get_identifier (".__result"), |
417ab240 | 2092 | len_type); |
bc21d315 | 2093 | if (!sym->ts.u.cl->length) |
1d754240 | 2094 | { |
bc21d315 | 2095 | sym->ts.u.cl->backend_decl = length; |
1d754240 | 2096 | TREE_USED (length) = 1; |
6de9cd9a | 2097 | } |
6e45f57b | 2098 | gcc_assert (TREE_CODE (length) == PARM_DECL); |
1d754240 | 2099 | DECL_CONTEXT (length) = fndecl; |
417ab240 | 2100 | DECL_ARG_TYPE (length) = len_type; |
1d754240 | 2101 | TREE_READONLY (length) = 1; |
ca0e9281 | 2102 | DECL_ARTIFICIAL (length) = 1; |
faf28b3a | 2103 | gfc_finish_decl (length); |
bc21d315 JW |
2104 | if (sym->ts.u.cl->backend_decl == NULL |
2105 | || sym->ts.u.cl->backend_decl == length) | |
417ab240 JJ |
2106 | { |
2107 | gfc_symbol *arg; | |
2108 | tree backend_decl; | |
6de9cd9a | 2109 | |
bc21d315 | 2110 | if (sym->ts.u.cl->backend_decl == NULL) |
417ab240 | 2111 | { |
c2255bc4 AH |
2112 | tree len = build_decl (input_location, |
2113 | VAR_DECL, | |
417ab240 JJ |
2114 | get_identifier ("..__result"), |
2115 | gfc_charlen_type_node); | |
2116 | DECL_ARTIFICIAL (len) = 1; | |
2117 | TREE_USED (len) = 1; | |
bc21d315 | 2118 | sym->ts.u.cl->backend_decl = len; |
417ab240 | 2119 | } |
6de9cd9a | 2120 | |
417ab240 JJ |
2121 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ |
2122 | arg = sym->result ? sym->result : sym; | |
2123 | backend_decl = arg->backend_decl; | |
2124 | /* Temporary clear it, so that gfc_sym_type creates complete | |
2125 | type. */ | |
2126 | arg->backend_decl = NULL; | |
2127 | type = gfc_sym_type (arg); | |
2128 | arg->backend_decl = backend_decl; | |
2129 | type = build_reference_type (type); | |
2130 | } | |
2131 | } | |
6de9cd9a | 2132 | |
c2255bc4 AH |
2133 | parm = build_decl (input_location, |
2134 | PARM_DECL, get_identifier ("__result"), type); | |
6de9cd9a | 2135 | |
417ab240 JJ |
2136 | DECL_CONTEXT (parm) = fndecl; |
2137 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2138 | TREE_READONLY (parm) = 1; | |
2139 | DECL_ARTIFICIAL (parm) = 1; | |
faf28b3a | 2140 | gfc_finish_decl (parm); |
6de9cd9a | 2141 | |
417ab240 JJ |
2142 | arglist = chainon (arglist, parm); |
2143 | typelist = TREE_CHAIN (typelist); | |
6de9cd9a | 2144 | |
417ab240 JJ |
2145 | if (sym->ts.type == BT_CHARACTER) |
2146 | { | |
2147 | gfc_allocate_lang_decl (parm); | |
2148 | arglist = chainon (arglist, length); | |
1d754240 PB |
2149 | typelist = TREE_CHAIN (typelist); |
2150 | } | |
2151 | } | |
6de9cd9a | 2152 | |
417ab240 | 2153 | hidden_typelist = typelist; |
4cbc9039 | 2154 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
417ab240 JJ |
2155 | if (f->sym != NULL) /* Ignore alternate returns. */ |
2156 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2157 | ||
4cbc9039 | 2158 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
1d754240 PB |
2159 | { |
2160 | char name[GFC_MAX_SYMBOL_LEN + 2]; | |
417ab240 | 2161 | |
1d754240 PB |
2162 | /* Ignore alternate returns. */ |
2163 | if (f->sym == NULL) | |
2164 | continue; | |
6de9cd9a | 2165 | |
1d754240 | 2166 | type = TREE_VALUE (typelist); |
6de9cd9a | 2167 | |
33215bb3 TB |
2168 | if (f->sym->ts.type == BT_CHARACTER |
2169 | && (!sym->attr.is_bind_c || sym->attr.entry_master)) | |
417ab240 JJ |
2170 | { |
2171 | tree len_type = TREE_VALUE (hidden_typelist); | |
2172 | tree length = NULL_TREE; | |
8d51f26f PT |
2173 | if (!f->sym->ts.deferred) |
2174 | gcc_assert (len_type == gfc_charlen_type_node); | |
2175 | else | |
2176 | gcc_assert (POINTER_TYPE_P (len_type)); | |
417ab240 JJ |
2177 | |
2178 | strcpy (&name[1], f->sym->name); | |
2179 | name[0] = '_'; | |
c2255bc4 AH |
2180 | length = build_decl (input_location, |
2181 | PARM_DECL, get_identifier (name), len_type); | |
6de9cd9a | 2182 | |
417ab240 JJ |
2183 | hidden_arglist = chainon (hidden_arglist, length); |
2184 | DECL_CONTEXT (length) = fndecl; | |
2185 | DECL_ARTIFICIAL (length) = 1; | |
2186 | DECL_ARG_TYPE (length) = len_type; | |
2187 | TREE_READONLY (length) = 1; | |
faf28b3a | 2188 | gfc_finish_decl (length); |
6de9cd9a | 2189 | |
cadb8f42 | 2190 | /* Remember the passed value. */ |
8b704316 | 2191 | if (!f->sym->ts.u.cl || f->sym->ts.u.cl->passed_length) |
3ba558db TB |
2192 | { |
2193 | /* This can happen if the same type is used for multiple | |
2194 | arguments. We need to copy cl as otherwise | |
2195 | cl->passed_length gets overwritten. */ | |
b76e28c6 | 2196 | f->sym->ts.u.cl = gfc_new_charlen (f->sym->ns, f->sym->ts.u.cl); |
3ba558db | 2197 | } |
bc21d315 | 2198 | f->sym->ts.u.cl->passed_length = length; |
6de9cd9a | 2199 | |
417ab240 | 2200 | /* Use the passed value for assumed length variables. */ |
bc21d315 | 2201 | if (!f->sym->ts.u.cl->length) |
6de9cd9a | 2202 | { |
417ab240 | 2203 | TREE_USED (length) = 1; |
bc21d315 JW |
2204 | gcc_assert (!f->sym->ts.u.cl->backend_decl); |
2205 | f->sym->ts.u.cl->backend_decl = length; | |
417ab240 JJ |
2206 | } |
2207 | ||
2208 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2209 | ||
bc21d315 JW |
2210 | if (f->sym->ts.u.cl->backend_decl == NULL |
2211 | || f->sym->ts.u.cl->backend_decl == length) | |
417ab240 | 2212 | { |
bc21d315 | 2213 | if (f->sym->ts.u.cl->backend_decl == NULL) |
417ab240 JJ |
2214 | gfc_create_string_length (f->sym); |
2215 | ||
2216 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ | |
2217 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
2218 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2219 | else | |
2220 | type = gfc_sym_type (f->sym); | |
6de9cd9a | 2221 | } |
6de9cd9a | 2222 | } |
60f97ac8 | 2223 | /* For noncharacter scalar intrinsic types, VALUE passes the value, |
9b110be2 | 2224 | hence, the optional status cannot be transferred via a NULL pointer. |
60f97ac8 TB |
2225 | Thus, we will use a hidden argument in that case. */ |
2226 | else if (f->sym->attr.optional && f->sym->attr.value | |
adede54c | 2227 | && !f->sym->attr.dimension && f->sym->ts.type != BT_CLASS |
60f97ac8 TB |
2228 | && f->sym->ts.type != BT_DERIVED) |
2229 | { | |
2230 | tree tmp; | |
2231 | strcpy (&name[1], f->sym->name); | |
2232 | name[0] = '_'; | |
2233 | tmp = build_decl (input_location, | |
2234 | PARM_DECL, get_identifier (name), | |
2235 | boolean_type_node); | |
2236 | ||
2237 | hidden_arglist = chainon (hidden_arglist, tmp); | |
2238 | DECL_CONTEXT (tmp) = fndecl; | |
2239 | DECL_ARTIFICIAL (tmp) = 1; | |
2240 | DECL_ARG_TYPE (tmp) = boolean_type_node; | |
2241 | TREE_READONLY (tmp) = 1; | |
2242 | gfc_finish_decl (tmp); | |
2243 | } | |
6de9cd9a | 2244 | |
417ab240 JJ |
2245 | /* For non-constant length array arguments, make sure they use |
2246 | a different type node from TYPE_ARG_TYPES type. */ | |
2247 | if (f->sym->attr.dimension | |
2248 | && type == TREE_VALUE (typelist) | |
2249 | && TREE_CODE (type) == POINTER_TYPE | |
2250 | && GFC_ARRAY_TYPE_P (type) | |
2251 | && f->sym->as->type != AS_ASSUMED_SIZE | |
2252 | && ! COMPLETE_TYPE_P (TREE_TYPE (type))) | |
2253 | { | |
2254 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
2255 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2256 | else | |
2257 | type = gfc_sym_type (f->sym); | |
2258 | } | |
2259 | ||
8fb74da4 JW |
2260 | if (f->sym->attr.proc_pointer) |
2261 | type = build_pointer_type (type); | |
2262 | ||
c28d1d9b TB |
2263 | if (f->sym->attr.volatile_) |
2264 | type = build_qualified_type (type, TYPE_QUAL_VOLATILE); | |
2265 | ||
df2fba9e | 2266 | /* Build the argument declaration. */ |
c2255bc4 AH |
2267 | parm = build_decl (input_location, |
2268 | PARM_DECL, gfc_sym_identifier (f->sym), type); | |
417ab240 | 2269 | |
c28d1d9b TB |
2270 | if (f->sym->attr.volatile_) |
2271 | { | |
2272 | TREE_THIS_VOLATILE (parm) = 1; | |
2273 | TREE_SIDE_EFFECTS (parm) = 1; | |
2274 | } | |
2275 | ||
417ab240 JJ |
2276 | /* Fill in arg stuff. */ |
2277 | DECL_CONTEXT (parm) = fndecl; | |
2278 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2279 | /* All implementation args are read-only. */ | |
2280 | TREE_READONLY (parm) = 1; | |
714495cd JJ |
2281 | if (POINTER_TYPE_P (type) |
2282 | && (!f->sym->attr.proc_pointer | |
2283 | && f->sym->attr.flavor != FL_PROCEDURE)) | |
2284 | DECL_BY_REFERENCE (parm) = 1; | |
417ab240 | 2285 | |
faf28b3a | 2286 | gfc_finish_decl (parm); |
92d28cbb | 2287 | gfc_finish_decl_attrs (parm, &f->sym->attr); |
417ab240 JJ |
2288 | |
2289 | f->sym->backend_decl = parm; | |
2290 | ||
aa13dc3c TB |
2291 | /* Coarrays which are descriptorless or assumed-shape pass with |
2292 | -fcoarray=lib the token and the offset as hidden arguments. */ | |
598cc4fa TB |
2293 | if (gfc_option.coarray == GFC_FCOARRAY_LIB |
2294 | && ((f->sym->ts.type != BT_CLASS && f->sym->attr.codimension | |
2295 | && !f->sym->attr.allocatable) | |
2296 | || (f->sym->ts.type == BT_CLASS | |
2297 | && CLASS_DATA (f->sym)->attr.codimension | |
2298 | && !CLASS_DATA (f->sym)->attr.allocatable))) | |
0c53708e TB |
2299 | { |
2300 | tree caf_type; | |
2301 | tree token; | |
2302 | tree offset; | |
2303 | ||
2304 | gcc_assert (f->sym->backend_decl != NULL_TREE | |
2305 | && !sym->attr.is_bind_c); | |
598cc4fa TB |
2306 | caf_type = f->sym->ts.type == BT_CLASS |
2307 | ? TREE_TYPE (CLASS_DATA (f->sym)->backend_decl) | |
2308 | : TREE_TYPE (f->sym->backend_decl); | |
0c53708e | 2309 | |
0c53708e TB |
2310 | token = build_decl (input_location, PARM_DECL, |
2311 | create_tmp_var_name ("caf_token"), | |
2312 | build_qualified_type (pvoid_type_node, | |
2313 | TYPE_QUAL_RESTRICT)); | |
598cc4fa TB |
2314 | if ((f->sym->ts.type != BT_CLASS |
2315 | && f->sym->as->type != AS_DEFERRED) | |
2316 | || (f->sym->ts.type == BT_CLASS | |
2317 | && CLASS_DATA (f->sym)->as->type != AS_DEFERRED)) | |
aa13dc3c TB |
2318 | { |
2319 | gcc_assert (DECL_LANG_SPECIFIC (f->sym->backend_decl) == NULL | |
2320 | || GFC_DECL_TOKEN (f->sym->backend_decl) == NULL_TREE); | |
2321 | if (DECL_LANG_SPECIFIC (f->sym->backend_decl) == NULL) | |
2322 | gfc_allocate_lang_decl (f->sym->backend_decl); | |
2323 | GFC_DECL_TOKEN (f->sym->backend_decl) = token; | |
2324 | } | |
2325 | else | |
2326 | { | |
2327 | gcc_assert (GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) == NULL_TREE); | |
2328 | GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) = token; | |
2329 | } | |
8b704316 | 2330 | |
0c53708e TB |
2331 | DECL_CONTEXT (token) = fndecl; |
2332 | DECL_ARTIFICIAL (token) = 1; | |
2333 | DECL_ARG_TYPE (token) = TREE_VALUE (typelist); | |
2334 | TREE_READONLY (token) = 1; | |
2335 | hidden_arglist = chainon (hidden_arglist, token); | |
2336 | gfc_finish_decl (token); | |
2337 | ||
0c53708e TB |
2338 | offset = build_decl (input_location, PARM_DECL, |
2339 | create_tmp_var_name ("caf_offset"), | |
2340 | gfc_array_index_type); | |
2341 | ||
598cc4fa TB |
2342 | if ((f->sym->ts.type != BT_CLASS |
2343 | && f->sym->as->type != AS_DEFERRED) | |
2344 | || (f->sym->ts.type == BT_CLASS | |
2345 | && CLASS_DATA (f->sym)->as->type != AS_DEFERRED)) | |
aa13dc3c TB |
2346 | { |
2347 | gcc_assert (GFC_DECL_CAF_OFFSET (f->sym->backend_decl) | |
2348 | == NULL_TREE); | |
2349 | GFC_DECL_CAF_OFFSET (f->sym->backend_decl) = offset; | |
2350 | } | |
2351 | else | |
2352 | { | |
2353 | gcc_assert (GFC_TYPE_ARRAY_CAF_OFFSET (caf_type) == NULL_TREE); | |
2354 | GFC_TYPE_ARRAY_CAF_OFFSET (caf_type) = offset; | |
2355 | } | |
0c53708e TB |
2356 | DECL_CONTEXT (offset) = fndecl; |
2357 | DECL_ARTIFICIAL (offset) = 1; | |
2358 | DECL_ARG_TYPE (offset) = TREE_VALUE (typelist); | |
2359 | TREE_READONLY (offset) = 1; | |
2360 | hidden_arglist = chainon (hidden_arglist, offset); | |
2361 | gfc_finish_decl (offset); | |
2362 | } | |
2363 | ||
417ab240 | 2364 | arglist = chainon (arglist, parm); |
1d754240 | 2365 | typelist = TREE_CHAIN (typelist); |
6de9cd9a | 2366 | } |
1d754240 | 2367 | |
7861a5ce TB |
2368 | /* Add the hidden string length parameters, unless the procedure |
2369 | is bind(C). */ | |
2370 | if (!sym->attr.is_bind_c) | |
2371 | arglist = chainon (arglist, hidden_arglist); | |
417ab240 | 2372 | |
884d2e6b SE |
2373 | gcc_assert (hidden_typelist == NULL_TREE |
2374 | || TREE_VALUE (hidden_typelist) == void_type_node); | |
1d754240 | 2375 | DECL_ARGUMENTS (fndecl) = arglist; |
3d79abbd | 2376 | } |
1d754240 | 2377 | |
3d79abbd PB |
2378 | /* Do the setup necessary before generating the body of a function. */ |
2379 | ||
2380 | static void | |
2381 | trans_function_start (gfc_symbol * sym) | |
2382 | { | |
2383 | tree fndecl; | |
2384 | ||
2385 | fndecl = sym->backend_decl; | |
2386 | ||
f8d0aee5 | 2387 | /* Let GCC know the current scope is this function. */ |
3d79abbd PB |
2388 | current_function_decl = fndecl; |
2389 | ||
f8d0aee5 | 2390 | /* Let the world know what we're about to do. */ |
3d79abbd PB |
2391 | announce_function (fndecl); |
2392 | ||
e5b16755 | 2393 | if (DECL_FILE_SCOPE_P (fndecl)) |
3d79abbd | 2394 | { |
f8d0aee5 | 2395 | /* Create RTL for function declaration. */ |
3d79abbd PB |
2396 | rest_of_decl_compilation (fndecl, 1, 0); |
2397 | } | |
2398 | ||
f8d0aee5 | 2399 | /* Create RTL for function definition. */ |
3d79abbd PB |
2400 | make_decl_rtl (fndecl); |
2401 | ||
b6b27e98 | 2402 | allocate_struct_function (fndecl, false); |
3d79abbd | 2403 | |
f8d0aee5 | 2404 | /* function.c requires a push at the start of the function. */ |
87a60f68 | 2405 | pushlevel (); |
3d79abbd PB |
2406 | } |
2407 | ||
2408 | /* Create thunks for alternate entry points. */ | |
2409 | ||
2410 | static void | |
fb55ca75 | 2411 | build_entry_thunks (gfc_namespace * ns, bool global) |
3d79abbd PB |
2412 | { |
2413 | gfc_formal_arglist *formal; | |
2414 | gfc_formal_arglist *thunk_formal; | |
2415 | gfc_entry_list *el; | |
2416 | gfc_symbol *thunk_sym; | |
2417 | stmtblock_t body; | |
2418 | tree thunk_fndecl; | |
3d79abbd | 2419 | tree tmp; |
c8cc8542 | 2420 | locus old_loc; |
3d79abbd PB |
2421 | |
2422 | /* This should always be a toplevel function. */ | |
6e45f57b | 2423 | gcc_assert (current_function_decl == NULL_TREE); |
3d79abbd | 2424 | |
363aab21 | 2425 | gfc_save_backend_locus (&old_loc); |
3d79abbd PB |
2426 | for (el = ns->entries; el; el = el->next) |
2427 | { | |
9771b263 DN |
2428 | vec<tree, va_gc> *args = NULL; |
2429 | vec<tree, va_gc> *string_args = NULL; | |
3bb06db4 | 2430 | |
3d79abbd | 2431 | thunk_sym = el->sym; |
8b704316 | 2432 | |
fb55ca75 | 2433 | build_function_decl (thunk_sym, global); |
3d79abbd PB |
2434 | create_function_arglist (thunk_sym); |
2435 | ||
2436 | trans_function_start (thunk_sym); | |
2437 | ||
2438 | thunk_fndecl = thunk_sym->backend_decl; | |
2439 | ||
c7c79a09 | 2440 | gfc_init_block (&body); |
3d79abbd | 2441 | |
f8d0aee5 | 2442 | /* Pass extra parameter identifying this entry point. */ |
7d60be94 | 2443 | tmp = build_int_cst (gfc_array_index_type, el->id); |
9771b263 | 2444 | vec_safe_push (args, tmp); |
3d79abbd | 2445 | |
d198b59a JJ |
2446 | if (thunk_sym->attr.function) |
2447 | { | |
2448 | if (gfc_return_by_reference (ns->proc_name)) | |
2449 | { | |
2450 | tree ref = DECL_ARGUMENTS (current_function_decl); | |
9771b263 | 2451 | vec_safe_push (args, ref); |
d198b59a | 2452 | if (ns->proc_name->ts.type == BT_CHARACTER) |
9771b263 | 2453 | vec_safe_push (args, DECL_CHAIN (ref)); |
d198b59a JJ |
2454 | } |
2455 | } | |
2456 | ||
4cbc9039 JW |
2457 | for (formal = gfc_sym_get_dummy_args (ns->proc_name); formal; |
2458 | formal = formal->next) | |
3d79abbd | 2459 | { |
d198b59a JJ |
2460 | /* Ignore alternate returns. */ |
2461 | if (formal->sym == NULL) | |
2462 | continue; | |
2463 | ||
3d79abbd PB |
2464 | /* We don't have a clever way of identifying arguments, so resort to |
2465 | a brute-force search. */ | |
4cbc9039 | 2466 | for (thunk_formal = gfc_sym_get_dummy_args (thunk_sym); |
3d79abbd PB |
2467 | thunk_formal; |
2468 | thunk_formal = thunk_formal->next) | |
2469 | { | |
2470 | if (thunk_formal->sym == formal->sym) | |
2471 | break; | |
2472 | } | |
2473 | ||
2474 | if (thunk_formal) | |
2475 | { | |
2476 | /* Pass the argument. */ | |
3e978d30 | 2477 | DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1; |
9771b263 | 2478 | vec_safe_push (args, thunk_formal->sym->backend_decl); |
3d79abbd PB |
2479 | if (formal->sym->ts.type == BT_CHARACTER) |
2480 | { | |
bc21d315 | 2481 | tmp = thunk_formal->sym->ts.u.cl->backend_decl; |
9771b263 | 2482 | vec_safe_push (string_args, tmp); |
3d79abbd PB |
2483 | } |
2484 | } | |
2485 | else | |
2486 | { | |
2487 | /* Pass NULL for a missing argument. */ | |
9771b263 | 2488 | vec_safe_push (args, null_pointer_node); |
3d79abbd PB |
2489 | if (formal->sym->ts.type == BT_CHARACTER) |
2490 | { | |
c3238e32 | 2491 | tmp = build_int_cst (gfc_charlen_type_node, 0); |
9771b263 | 2492 | vec_safe_push (string_args, tmp); |
3d79abbd PB |
2493 | } |
2494 | } | |
2495 | } | |
2496 | ||
2497 | /* Call the master function. */ | |
9771b263 | 2498 | vec_safe_splice (args, string_args); |
3d79abbd | 2499 | tmp = ns->proc_name->backend_decl; |
3bb06db4 | 2500 | tmp = build_call_expr_loc_vec (input_location, tmp, args); |
d198b59a JJ |
2501 | if (ns->proc_name->attr.mixed_entry_master) |
2502 | { | |
2503 | tree union_decl, field; | |
2504 | tree master_type = TREE_TYPE (ns->proc_name->backend_decl); | |
2505 | ||
c2255bc4 AH |
2506 | union_decl = build_decl (input_location, |
2507 | VAR_DECL, get_identifier ("__result"), | |
d198b59a JJ |
2508 | TREE_TYPE (master_type)); |
2509 | DECL_ARTIFICIAL (union_decl) = 1; | |
2510 | DECL_EXTERNAL (union_decl) = 0; | |
2511 | TREE_PUBLIC (union_decl) = 0; | |
2512 | TREE_USED (union_decl) = 1; | |
2513 | layout_decl (union_decl, 0); | |
2514 | pushdecl (union_decl); | |
2515 | ||
2516 | DECL_CONTEXT (union_decl) = current_function_decl; | |
bc98ed60 TB |
2517 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
2518 | TREE_TYPE (union_decl), union_decl, tmp); | |
d198b59a JJ |
2519 | gfc_add_expr_to_block (&body, tmp); |
2520 | ||
2521 | for (field = TYPE_FIELDS (TREE_TYPE (union_decl)); | |
910ad8de | 2522 | field; field = DECL_CHAIN (field)) |
d198b59a JJ |
2523 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2524 | thunk_sym->result->name) == 0) | |
2525 | break; | |
2526 | gcc_assert (field != NULL_TREE); | |
bc98ed60 TB |
2527 | tmp = fold_build3_loc (input_location, COMPONENT_REF, |
2528 | TREE_TYPE (field), union_decl, field, | |
2529 | NULL_TREE); | |
8b704316 | 2530 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
44855d8c TS |
2531 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2532 | DECL_RESULT (current_function_decl), tmp); | |
d198b59a JJ |
2533 | tmp = build1_v (RETURN_EXPR, tmp); |
2534 | } | |
2535 | else if (TREE_TYPE (DECL_RESULT (current_function_decl)) | |
2536 | != void_type_node) | |
2537 | { | |
bc98ed60 | 2538 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
44855d8c TS |
2539 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2540 | DECL_RESULT (current_function_decl), tmp); | |
d198b59a JJ |
2541 | tmp = build1_v (RETURN_EXPR, tmp); |
2542 | } | |
3d79abbd PB |
2543 | gfc_add_expr_to_block (&body, tmp); |
2544 | ||
2545 | /* Finish off this function and send it for code generation. */ | |
2546 | DECL_SAVED_TREE (thunk_fndecl) = gfc_finish_block (&body); | |
c7c79a09 | 2547 | tmp = getdecls (); |
87a60f68 | 2548 | poplevel (1, 1); |
3d79abbd | 2549 | BLOCK_SUPERCONTEXT (DECL_INITIAL (thunk_fndecl)) = thunk_fndecl; |
c7c79a09 JJ |
2550 | DECL_SAVED_TREE (thunk_fndecl) |
2551 | = build3_v (BIND_EXPR, tmp, DECL_SAVED_TREE (thunk_fndecl), | |
2552 | DECL_INITIAL (thunk_fndecl)); | |
3d79abbd PB |
2553 | |
2554 | /* Output the GENERIC tree. */ | |
2555 | dump_function (TDI_original, thunk_fndecl); | |
2556 | ||
2557 | /* Store the end of the function, so that we get good line number | |
2558 | info for the epilogue. */ | |
2559 | cfun->function_end_locus = input_location; | |
2560 | ||
2561 | /* We're leaving the context of this function, so zap cfun. | |
2562 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
2563 | tree_rest_of_compilation. */ | |
db2960f4 | 2564 | set_cfun (NULL); |
3d79abbd PB |
2565 | |
2566 | current_function_decl = NULL_TREE; | |
2567 | ||
3dafb85c | 2568 | cgraph_node::finalize_function (thunk_fndecl, true); |
3d79abbd PB |
2569 | |
2570 | /* We share the symbols in the formal argument list with other entry | |
2571 | points and the master function. Clear them so that they are | |
2572 | recreated for each function. */ | |
4cbc9039 JW |
2573 | for (formal = gfc_sym_get_dummy_args (thunk_sym); formal; |
2574 | formal = formal->next) | |
d198b59a JJ |
2575 | if (formal->sym != NULL) /* Ignore alternate returns. */ |
2576 | { | |
2577 | formal->sym->backend_decl = NULL_TREE; | |
2578 | if (formal->sym->ts.type == BT_CHARACTER) | |
bc21d315 | 2579 | formal->sym->ts.u.cl->backend_decl = NULL_TREE; |
d198b59a JJ |
2580 | } |
2581 | ||
2582 | if (thunk_sym->attr.function) | |
3d79abbd | 2583 | { |
d198b59a | 2584 | if (thunk_sym->ts.type == BT_CHARACTER) |
bc21d315 | 2585 | thunk_sym->ts.u.cl->backend_decl = NULL_TREE; |
d198b59a | 2586 | if (thunk_sym->result->ts.type == BT_CHARACTER) |
bc21d315 | 2587 | thunk_sym->result->ts.u.cl->backend_decl = NULL_TREE; |
3d79abbd PB |
2588 | } |
2589 | } | |
c8cc8542 | 2590 | |
363aab21 | 2591 | gfc_restore_backend_locus (&old_loc); |
3d79abbd PB |
2592 | } |
2593 | ||
2594 | ||
2595 | /* Create a decl for a function, and create any thunks for alternate entry | |
fb55ca75 TB |
2596 | points. If global is true, generate the function in the global binding |
2597 | level, otherwise in the current binding level (which can be global). */ | |
3d79abbd PB |
2598 | |
2599 | void | |
fb55ca75 | 2600 | gfc_create_function_decl (gfc_namespace * ns, bool global) |
3d79abbd PB |
2601 | { |
2602 | /* Create a declaration for the master function. */ | |
fb55ca75 | 2603 | build_function_decl (ns->proc_name, global); |
3d79abbd | 2604 | |
f8d0aee5 | 2605 | /* Compile the entry thunks. */ |
3d79abbd | 2606 | if (ns->entries) |
fb55ca75 | 2607 | build_entry_thunks (ns, global); |
3d79abbd PB |
2608 | |
2609 | /* Now create the read argument list. */ | |
2610 | create_function_arglist (ns->proc_name); | |
dd2fc525 JJ |
2611 | |
2612 | if (ns->omp_declare_simd) | |
2613 | gfc_trans_omp_declare_simd (ns); | |
3d79abbd PB |
2614 | } |
2615 | ||
5f20c93a | 2616 | /* Return the decl used to hold the function return value. If |
da4c6ed8 | 2617 | parent_flag is set, the context is the parent_scope. */ |
6de9cd9a DN |
2618 | |
2619 | tree | |
5f20c93a | 2620 | gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag) |
6de9cd9a | 2621 | { |
5f20c93a PT |
2622 | tree decl; |
2623 | tree length; | |
2624 | tree this_fake_result_decl; | |
2625 | tree this_function_decl; | |
6de9cd9a DN |
2626 | |
2627 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
2628 | ||
5f20c93a PT |
2629 | if (parent_flag) |
2630 | { | |
2631 | this_fake_result_decl = parent_fake_result_decl; | |
2632 | this_function_decl = DECL_CONTEXT (current_function_decl); | |
2633 | } | |
2634 | else | |
2635 | { | |
2636 | this_fake_result_decl = current_fake_result_decl; | |
2637 | this_function_decl = current_function_decl; | |
2638 | } | |
2639 | ||
d198b59a | 2640 | if (sym |
5f20c93a | 2641 | && sym->ns->proc_name->backend_decl == this_function_decl |
417ab240 | 2642 | && sym->ns->proc_name->attr.entry_master |
d198b59a JJ |
2643 | && sym != sym->ns->proc_name) |
2644 | { | |
417ab240 | 2645 | tree t = NULL, var; |
5f20c93a PT |
2646 | if (this_fake_result_decl != NULL) |
2647 | for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t)) | |
417ab240 JJ |
2648 | if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0) |
2649 | break; | |
2650 | if (t) | |
2651 | return TREE_VALUE (t); | |
5f20c93a PT |
2652 | decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag); |
2653 | ||
2654 | if (parent_flag) | |
2655 | this_fake_result_decl = parent_fake_result_decl; | |
2656 | else | |
2657 | this_fake_result_decl = current_fake_result_decl; | |
2658 | ||
417ab240 | 2659 | if (decl && sym->ns->proc_name->attr.mixed_entry_master) |
d198b59a JJ |
2660 | { |
2661 | tree field; | |
2662 | ||
2663 | for (field = TYPE_FIELDS (TREE_TYPE (decl)); | |
910ad8de | 2664 | field; field = DECL_CHAIN (field)) |
d198b59a JJ |
2665 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2666 | sym->name) == 0) | |
2667 | break; | |
2668 | ||
2669 | gcc_assert (field != NULL_TREE); | |
bc98ed60 TB |
2670 | decl = fold_build3_loc (input_location, COMPONENT_REF, |
2671 | TREE_TYPE (field), decl, field, NULL_TREE); | |
d198b59a | 2672 | } |
5f20c93a PT |
2673 | |
2674 | var = create_tmp_var_raw (TREE_TYPE (decl), sym->name); | |
2675 | if (parent_flag) | |
2676 | gfc_add_decl_to_parent_function (var); | |
2677 | else | |
2678 | gfc_add_decl_to_function (var); | |
2679 | ||
417ab240 JJ |
2680 | SET_DECL_VALUE_EXPR (var, decl); |
2681 | DECL_HAS_VALUE_EXPR_P (var) = 1; | |
4b8ae4db | 2682 | GFC_DECL_RESULT (var) = 1; |
5f20c93a PT |
2683 | |
2684 | TREE_CHAIN (this_fake_result_decl) | |
2685 | = tree_cons (get_identifier (sym->name), var, | |
2686 | TREE_CHAIN (this_fake_result_decl)); | |
417ab240 | 2687 | return var; |
d198b59a JJ |
2688 | } |
2689 | ||
5f20c93a PT |
2690 | if (this_fake_result_decl != NULL_TREE) |
2691 | return TREE_VALUE (this_fake_result_decl); | |
6de9cd9a DN |
2692 | |
2693 | /* Only when gfc_get_fake_result_decl is called by gfc_trans_return, | |
2694 | sym is NULL. */ | |
2695 | if (!sym) | |
2696 | return NULL_TREE; | |
2697 | ||
417ab240 | 2698 | if (sym->ts.type == BT_CHARACTER) |
6de9cd9a | 2699 | { |
bc21d315 | 2700 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
417ab240 JJ |
2701 | length = gfc_create_string_length (sym); |
2702 | else | |
bc21d315 | 2703 | length = sym->ts.u.cl->backend_decl; |
417ab240 JJ |
2704 | if (TREE_CODE (length) == VAR_DECL |
2705 | && DECL_CONTEXT (length) == NULL_TREE) | |
a7d6b765 | 2706 | gfc_add_decl_to_function (length); |
6de9cd9a DN |
2707 | } |
2708 | ||
2709 | if (gfc_return_by_reference (sym)) | |
2710 | { | |
5f20c93a | 2711 | decl = DECL_ARGUMENTS (this_function_decl); |
d198b59a | 2712 | |
5f20c93a | 2713 | if (sym->ns->proc_name->backend_decl == this_function_decl |
d198b59a | 2714 | && sym->ns->proc_name->attr.entry_master) |
910ad8de | 2715 | decl = DECL_CHAIN (decl); |
6de9cd9a DN |
2716 | |
2717 | TREE_USED (decl) = 1; | |
2718 | if (sym->as) | |
2719 | decl = gfc_build_dummy_array_decl (sym, decl); | |
2720 | } | |
2721 | else | |
2722 | { | |
2723 | sprintf (name, "__result_%.20s", | |
5f20c93a | 2724 | IDENTIFIER_POINTER (DECL_NAME (this_function_decl))); |
6de9cd9a | 2725 | |
da4c6ed8 | 2726 | if (!sym->attr.mixed_entry_master && sym->attr.function) |
88e09c79 | 2727 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
c2255bc4 | 2728 | VAR_DECL, get_identifier (name), |
da4c6ed8 TS |
2729 | gfc_sym_type (sym)); |
2730 | else | |
88e09c79 | 2731 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
c2255bc4 | 2732 | VAR_DECL, get_identifier (name), |
da4c6ed8 | 2733 | TREE_TYPE (TREE_TYPE (this_function_decl))); |
6de9cd9a DN |
2734 | DECL_ARTIFICIAL (decl) = 1; |
2735 | DECL_EXTERNAL (decl) = 0; | |
2736 | TREE_PUBLIC (decl) = 0; | |
2737 | TREE_USED (decl) = 1; | |
6c7a4dfd | 2738 | GFC_DECL_RESULT (decl) = 1; |
c55cebda | 2739 | TREE_ADDRESSABLE (decl) = 1; |
6de9cd9a DN |
2740 | |
2741 | layout_decl (decl, 0); | |
92d28cbb | 2742 | gfc_finish_decl_attrs (decl, &sym->attr); |
6de9cd9a | 2743 | |
5f20c93a PT |
2744 | if (parent_flag) |
2745 | gfc_add_decl_to_parent_function (decl); | |
2746 | else | |
2747 | gfc_add_decl_to_function (decl); | |
6de9cd9a DN |
2748 | } |
2749 | ||
5f20c93a PT |
2750 | if (parent_flag) |
2751 | parent_fake_result_decl = build_tree_list (NULL, decl); | |
2752 | else | |
2753 | current_fake_result_decl = build_tree_list (NULL, decl); | |
6de9cd9a DN |
2754 | |
2755 | return decl; | |
2756 | } | |
2757 | ||
2758 | ||
2759 | /* Builds a function decl. The remaining parameters are the types of the | |
2760 | function arguments. Negative nargs indicates a varargs function. */ | |
2761 | ||
0b7b376d RG |
2762 | static tree |
2763 | build_library_function_decl_1 (tree name, const char *spec, | |
2764 | tree rettype, int nargs, va_list p) | |
6de9cd9a | 2765 | { |
9771b263 | 2766 | vec<tree, va_gc> *arglist; |
6de9cd9a DN |
2767 | tree fntype; |
2768 | tree fndecl; | |
6de9cd9a DN |
2769 | int n; |
2770 | ||
2771 | /* Library functions must be declared with global scope. */ | |
6e45f57b | 2772 | gcc_assert (current_function_decl == NULL_TREE); |
6de9cd9a | 2773 | |
6de9cd9a | 2774 | /* Create a list of the argument types. */ |
9771b263 | 2775 | vec_alloc (arglist, abs (nargs)); |
6c32445b | 2776 | for (n = abs (nargs); n > 0; n--) |
6de9cd9a | 2777 | { |
6c32445b | 2778 | tree argtype = va_arg (p, tree); |
9771b263 | 2779 | arglist->quick_push (argtype); |
6de9cd9a DN |
2780 | } |
2781 | ||
2782 | /* Build the function type and decl. */ | |
6c32445b NF |
2783 | if (nargs >= 0) |
2784 | fntype = build_function_type_vec (rettype, arglist); | |
2785 | else | |
2786 | fntype = build_varargs_function_type_vec (rettype, arglist); | |
0b7b376d RG |
2787 | if (spec) |
2788 | { | |
2789 | tree attr_args = build_tree_list (NULL_TREE, | |
2790 | build_string (strlen (spec), spec)); | |
2791 | tree attrs = tree_cons (get_identifier ("fn spec"), | |
2792 | attr_args, TYPE_ATTRIBUTES (fntype)); | |
2793 | fntype = build_type_attribute_variant (fntype, attrs); | |
2794 | } | |
c2255bc4 AH |
2795 | fndecl = build_decl (input_location, |
2796 | FUNCTION_DECL, name, fntype); | |
6de9cd9a DN |
2797 | |
2798 | /* Mark this decl as external. */ | |
2799 | DECL_EXTERNAL (fndecl) = 1; | |
2800 | TREE_PUBLIC (fndecl) = 1; | |
2801 | ||
6de9cd9a DN |
2802 | pushdecl (fndecl); |
2803 | ||
0e6df31e | 2804 | rest_of_decl_compilation (fndecl, 1, 0); |
6de9cd9a DN |
2805 | |
2806 | return fndecl; | |
2807 | } | |
2808 | ||
0b7b376d RG |
2809 | /* Builds a function decl. The remaining parameters are the types of the |
2810 | function arguments. Negative nargs indicates a varargs function. */ | |
2811 | ||
2812 | tree | |
2813 | gfc_build_library_function_decl (tree name, tree rettype, int nargs, ...) | |
2814 | { | |
2815 | tree ret; | |
2816 | va_list args; | |
2817 | va_start (args, nargs); | |
2818 | ret = build_library_function_decl_1 (name, NULL, rettype, nargs, args); | |
2819 | va_end (args); | |
2820 | return ret; | |
2821 | } | |
2822 | ||
2823 | /* Builds a function decl. The remaining parameters are the types of the | |
2824 | function arguments. Negative nargs indicates a varargs function. | |
2825 | The SPEC parameter specifies the function argument and return type | |
2826 | specification according to the fnspec function type attribute. */ | |
2827 | ||
3f34855a | 2828 | tree |
0b7b376d RG |
2829 | gfc_build_library_function_decl_with_spec (tree name, const char *spec, |
2830 | tree rettype, int nargs, ...) | |
2831 | { | |
2832 | tree ret; | |
2833 | va_list args; | |
2834 | va_start (args, nargs); | |
2835 | ret = build_library_function_decl_1 (name, spec, rettype, nargs, args); | |
2836 | va_end (args); | |
2837 | return ret; | |
2838 | } | |
2839 | ||
6de9cd9a DN |
2840 | static void |
2841 | gfc_build_intrinsic_function_decls (void) | |
2842 | { | |
e2cad04b | 2843 | tree gfc_int4_type_node = gfc_get_int_type (4); |
a416c4c7 | 2844 | tree gfc_pint4_type_node = build_pointer_type (gfc_int4_type_node); |
e2cad04b | 2845 | tree gfc_int8_type_node = gfc_get_int_type (8); |
a416c4c7 | 2846 | tree gfc_pint8_type_node = build_pointer_type (gfc_int8_type_node); |
644cb69f | 2847 | tree gfc_int16_type_node = gfc_get_int_type (16); |
e2cad04b | 2848 | tree gfc_logical4_type_node = gfc_get_logical_type (4); |
374929b2 FXC |
2849 | tree pchar1_type_node = gfc_get_pchar_type (1); |
2850 | tree pchar4_type_node = gfc_get_pchar_type (4); | |
e2cad04b | 2851 | |
6de9cd9a | 2852 | /* String functions. */ |
6368f166 DF |
2853 | gfor_fndecl_compare_string = gfc_build_library_function_decl_with_spec ( |
2854 | get_identifier (PREFIX("compare_string")), "..R.R", | |
2855 | integer_type_node, 4, gfc_charlen_type_node, pchar1_type_node, | |
2856 | gfc_charlen_type_node, pchar1_type_node); | |
4ca4be7f | 2857 | DECL_PURE_P (gfor_fndecl_compare_string) = 1; |
22b139e1 | 2858 | TREE_NOTHROW (gfor_fndecl_compare_string) = 1; |
6368f166 DF |
2859 | |
2860 | gfor_fndecl_concat_string = gfc_build_library_function_decl_with_spec ( | |
2861 | get_identifier (PREFIX("concat_string")), "..W.R.R", | |
2862 | void_type_node, 6, gfc_charlen_type_node, pchar1_type_node, | |
2863 | gfc_charlen_type_node, pchar1_type_node, | |
2864 | gfc_charlen_type_node, pchar1_type_node); | |
22b139e1 | 2865 | TREE_NOTHROW (gfor_fndecl_concat_string) = 1; |
6368f166 DF |
2866 | |
2867 | gfor_fndecl_string_len_trim = gfc_build_library_function_decl_with_spec ( | |
2868 | get_identifier (PREFIX("string_len_trim")), "..R", | |
2869 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar1_type_node); | |
4ca4be7f | 2870 | DECL_PURE_P (gfor_fndecl_string_len_trim) = 1; |
22b139e1 | 2871 | TREE_NOTHROW (gfor_fndecl_string_len_trim) = 1; |
6368f166 DF |
2872 | |
2873 | gfor_fndecl_string_index = gfc_build_library_function_decl_with_spec ( | |
2874 | get_identifier (PREFIX("string_index")), "..R.R.", | |
2875 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2876 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2877 | DECL_PURE_P (gfor_fndecl_string_index) = 1; |
22b139e1 | 2878 | TREE_NOTHROW (gfor_fndecl_string_index) = 1; |
6368f166 DF |
2879 | |
2880 | gfor_fndecl_string_scan = gfc_build_library_function_decl_with_spec ( | |
2881 | get_identifier (PREFIX("string_scan")), "..R.R.", | |
2882 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2883 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2884 | DECL_PURE_P (gfor_fndecl_string_scan) = 1; |
22b139e1 | 2885 | TREE_NOTHROW (gfor_fndecl_string_scan) = 1; |
6368f166 DF |
2886 | |
2887 | gfor_fndecl_string_verify = gfc_build_library_function_decl_with_spec ( | |
2888 | get_identifier (PREFIX("string_verify")), "..R.R.", | |
2889 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2890 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2891 | DECL_PURE_P (gfor_fndecl_string_verify) = 1; |
22b139e1 | 2892 | TREE_NOTHROW (gfor_fndecl_string_verify) = 1; |
6368f166 DF |
2893 | |
2894 | gfor_fndecl_string_trim = gfc_build_library_function_decl_with_spec ( | |
2895 | get_identifier (PREFIX("string_trim")), ".Ww.R", | |
2896 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2897 | build_pointer_type (pchar1_type_node), gfc_charlen_type_node, | |
2898 | pchar1_type_node); | |
2899 | ||
2900 | gfor_fndecl_string_minmax = gfc_build_library_function_decl_with_spec ( | |
2901 | get_identifier (PREFIX("string_minmax")), ".Ww.R", | |
2902 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2903 | build_pointer_type (pchar1_type_node), integer_type_node, | |
2904 | integer_type_node); | |
2905 | ||
2906 | gfor_fndecl_adjustl = gfc_build_library_function_decl_with_spec ( | |
2907 | get_identifier (PREFIX("adjustl")), ".W.R", | |
2908 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2909 | pchar1_type_node); | |
22b139e1 | 2910 | TREE_NOTHROW (gfor_fndecl_adjustl) = 1; |
6368f166 DF |
2911 | |
2912 | gfor_fndecl_adjustr = gfc_build_library_function_decl_with_spec ( | |
2913 | get_identifier (PREFIX("adjustr")), ".W.R", | |
2914 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2915 | pchar1_type_node); | |
22b139e1 | 2916 | TREE_NOTHROW (gfor_fndecl_adjustr) = 1; |
6368f166 DF |
2917 | |
2918 | gfor_fndecl_select_string = gfc_build_library_function_decl_with_spec ( | |
2919 | get_identifier (PREFIX("select_string")), ".R.R.", | |
2920 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2921 | pchar1_type_node, gfc_charlen_type_node); | |
4ca4be7f | 2922 | DECL_PURE_P (gfor_fndecl_select_string) = 1; |
22b139e1 | 2923 | TREE_NOTHROW (gfor_fndecl_select_string) = 1; |
6368f166 DF |
2924 | |
2925 | gfor_fndecl_compare_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2926 | get_identifier (PREFIX("compare_string_char4")), "..R.R", | |
2927 | integer_type_node, 4, gfc_charlen_type_node, pchar4_type_node, | |
2928 | gfc_charlen_type_node, pchar4_type_node); | |
4ca4be7f | 2929 | DECL_PURE_P (gfor_fndecl_compare_string_char4) = 1; |
22b139e1 | 2930 | TREE_NOTHROW (gfor_fndecl_compare_string_char4) = 1; |
6368f166 DF |
2931 | |
2932 | gfor_fndecl_concat_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2933 | get_identifier (PREFIX("concat_string_char4")), "..W.R.R", | |
2934 | void_type_node, 6, gfc_charlen_type_node, pchar4_type_node, | |
2935 | gfc_charlen_type_node, pchar4_type_node, gfc_charlen_type_node, | |
2936 | pchar4_type_node); | |
22b139e1 | 2937 | TREE_NOTHROW (gfor_fndecl_concat_string_char4) = 1; |
6368f166 DF |
2938 | |
2939 | gfor_fndecl_string_len_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2940 | get_identifier (PREFIX("string_len_trim_char4")), "..R", | |
2941 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar4_type_node); | |
4ca4be7f | 2942 | DECL_PURE_P (gfor_fndecl_string_len_trim_char4) = 1; |
22b139e1 | 2943 | TREE_NOTHROW (gfor_fndecl_string_len_trim_char4) = 1; |
6368f166 DF |
2944 | |
2945 | gfor_fndecl_string_index_char4 = gfc_build_library_function_decl_with_spec ( | |
2946 | get_identifier (PREFIX("string_index_char4")), "..R.R.", | |
2947 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2948 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2949 | DECL_PURE_P (gfor_fndecl_string_index_char4) = 1; |
22b139e1 | 2950 | TREE_NOTHROW (gfor_fndecl_string_index_char4) = 1; |
6368f166 DF |
2951 | |
2952 | gfor_fndecl_string_scan_char4 = gfc_build_library_function_decl_with_spec ( | |
2953 | get_identifier (PREFIX("string_scan_char4")), "..R.R.", | |
2954 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2955 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2956 | DECL_PURE_P (gfor_fndecl_string_scan_char4) = 1; |
22b139e1 | 2957 | TREE_NOTHROW (gfor_fndecl_string_scan_char4) = 1; |
6368f166 DF |
2958 | |
2959 | gfor_fndecl_string_verify_char4 = gfc_build_library_function_decl_with_spec ( | |
2960 | get_identifier (PREFIX("string_verify_char4")), "..R.R.", | |
2961 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2962 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2963 | DECL_PURE_P (gfor_fndecl_string_verify_char4) = 1; |
22b139e1 | 2964 | TREE_NOTHROW (gfor_fndecl_string_verify_char4) = 1; |
6368f166 DF |
2965 | |
2966 | gfor_fndecl_string_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2967 | get_identifier (PREFIX("string_trim_char4")), ".Ww.R", | |
2968 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2969 | build_pointer_type (pchar4_type_node), gfc_charlen_type_node, | |
2970 | pchar4_type_node); | |
2971 | ||
2972 | gfor_fndecl_string_minmax_char4 = gfc_build_library_function_decl_with_spec ( | |
2973 | get_identifier (PREFIX("string_minmax_char4")), ".Ww.R", | |
2974 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2975 | build_pointer_type (pchar4_type_node), integer_type_node, | |
2976 | integer_type_node); | |
2977 | ||
2978 | gfor_fndecl_adjustl_char4 = gfc_build_library_function_decl_with_spec ( | |
2979 | get_identifier (PREFIX("adjustl_char4")), ".W.R", | |
2980 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2981 | pchar4_type_node); | |
22b139e1 | 2982 | TREE_NOTHROW (gfor_fndecl_adjustl_char4) = 1; |
6368f166 DF |
2983 | |
2984 | gfor_fndecl_adjustr_char4 = gfc_build_library_function_decl_with_spec ( | |
2985 | get_identifier (PREFIX("adjustr_char4")), ".W.R", | |
2986 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2987 | pchar4_type_node); | |
22b139e1 | 2988 | TREE_NOTHROW (gfor_fndecl_adjustr_char4) = 1; |
6368f166 DF |
2989 | |
2990 | gfor_fndecl_select_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2991 | get_identifier (PREFIX("select_string_char4")), ".R.R.", | |
2992 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2993 | pvoid_type_node, gfc_charlen_type_node); | |
4ca4be7f | 2994 | DECL_PURE_P (gfor_fndecl_select_string_char4) = 1; |
22b139e1 | 2995 | TREE_NOTHROW (gfor_fndecl_select_string_char4) = 1; |
d393bbd7 FXC |
2996 | |
2997 | ||
2998 | /* Conversion between character kinds. */ | |
2999 | ||
6368f166 DF |
3000 | gfor_fndecl_convert_char1_to_char4 = gfc_build_library_function_decl_with_spec ( |
3001 | get_identifier (PREFIX("convert_char1_to_char4")), ".w.R", | |
3002 | void_type_node, 3, build_pointer_type (pchar4_type_node), | |
3003 | gfc_charlen_type_node, pchar1_type_node); | |
d393bbd7 | 3004 | |
6368f166 DF |
3005 | gfor_fndecl_convert_char4_to_char1 = gfc_build_library_function_decl_with_spec ( |
3006 | get_identifier (PREFIX("convert_char4_to_char1")), ".w.R", | |
3007 | void_type_node, 3, build_pointer_type (pchar1_type_node), | |
3008 | gfc_charlen_type_node, pchar4_type_node); | |
d393bbd7 | 3009 | |
374929b2 | 3010 | /* Misc. functions. */ |
2263c775 | 3011 | |
6368f166 DF |
3012 | gfor_fndecl_ttynam = gfc_build_library_function_decl_with_spec ( |
3013 | get_identifier (PREFIX("ttynam")), ".W", | |
3014 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
3015 | integer_type_node); | |
3016 | ||
3017 | gfor_fndecl_fdate = gfc_build_library_function_decl_with_spec ( | |
3018 | get_identifier (PREFIX("fdate")), ".W", | |
3019 | void_type_node, 2, pchar_type_node, gfc_charlen_type_node); | |
3020 | ||
3021 | gfor_fndecl_ctime = gfc_build_library_function_decl_with_spec ( | |
3022 | get_identifier (PREFIX("ctime")), ".W", | |
3023 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
3024 | gfc_int8_type_node); | |
3025 | ||
3026 | gfor_fndecl_sc_kind = gfc_build_library_function_decl_with_spec ( | |
3027 | get_identifier (PREFIX("selected_char_kind")), "..R", | |
3028 | gfc_int4_type_node, 2, gfc_charlen_type_node, pchar_type_node); | |
4ca4be7f | 3029 | DECL_PURE_P (gfor_fndecl_sc_kind) = 1; |
22b139e1 | 3030 | TREE_NOTHROW (gfor_fndecl_sc_kind) = 1; |
6368f166 DF |
3031 | |
3032 | gfor_fndecl_si_kind = gfc_build_library_function_decl_with_spec ( | |
3033 | get_identifier (PREFIX("selected_int_kind")), ".R", | |
3034 | gfc_int4_type_node, 1, pvoid_type_node); | |
4ca4be7f | 3035 | DECL_PURE_P (gfor_fndecl_si_kind) = 1; |
22b139e1 | 3036 | TREE_NOTHROW (gfor_fndecl_si_kind) = 1; |
6368f166 DF |
3037 | |
3038 | gfor_fndecl_sr_kind = gfc_build_library_function_decl_with_spec ( | |
3039 | get_identifier (PREFIX("selected_real_kind2008")), ".RR", | |
3040 | gfc_int4_type_node, 3, pvoid_type_node, pvoid_type_node, | |
3041 | pvoid_type_node); | |
4ca4be7f | 3042 | DECL_PURE_P (gfor_fndecl_sr_kind) = 1; |
22b139e1 | 3043 | TREE_NOTHROW (gfor_fndecl_sr_kind) = 1; |
6de9cd9a | 3044 | |
a416c4c7 FXC |
3045 | gfor_fndecl_system_clock4 = gfc_build_library_function_decl ( |
3046 | get_identifier (PREFIX("system_clock_4")), | |
3047 | void_type_node, 3, gfc_pint4_type_node, gfc_pint4_type_node, | |
3048 | gfc_pint4_type_node); | |
3049 | ||
3050 | gfor_fndecl_system_clock8 = gfc_build_library_function_decl ( | |
3051 | get_identifier (PREFIX("system_clock_8")), | |
3052 | void_type_node, 3, gfc_pint8_type_node, gfc_pint8_type_node, | |
3053 | gfc_pint8_type_node); | |
3054 | ||
6de9cd9a | 3055 | /* Power functions. */ |
5b200ac2 | 3056 | { |
644cb69f FXC |
3057 | tree ctype, rtype, itype, jtype; |
3058 | int rkind, ikind, jkind; | |
3059 | #define NIKINDS 3 | |
3060 | #define NRKINDS 4 | |
3061 | static int ikinds[NIKINDS] = {4, 8, 16}; | |
3062 | static int rkinds[NRKINDS] = {4, 8, 10, 16}; | |
3063 | char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */ | |
3064 | ||
3065 | for (ikind=0; ikind < NIKINDS; ikind++) | |
5b200ac2 | 3066 | { |
644cb69f FXC |
3067 | itype = gfc_get_int_type (ikinds[ikind]); |
3068 | ||
3069 | for (jkind=0; jkind < NIKINDS; jkind++) | |
3070 | { | |
3071 | jtype = gfc_get_int_type (ikinds[jkind]); | |
3072 | if (itype && jtype) | |
3073 | { | |
3074 | sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind], | |
3075 | ikinds[jkind]); | |
3076 | gfor_fndecl_math_powi[jkind][ikind].integer = | |
3077 | gfc_build_library_function_decl (get_identifier (name), | |
3078 | jtype, 2, jtype, itype); | |
67fdae36 | 3079 | TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
22b139e1 | 3080 | TREE_NOTHROW (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
644cb69f FXC |
3081 | } |
3082 | } | |
3083 | ||
3084 | for (rkind = 0; rkind < NRKINDS; rkind ++) | |
5b200ac2 | 3085 | { |
644cb69f FXC |
3086 | rtype = gfc_get_real_type (rkinds[rkind]); |
3087 | if (rtype && itype) | |
3088 | { | |
3089 | sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind], | |
3090 | ikinds[ikind]); | |
3091 | gfor_fndecl_math_powi[rkind][ikind].real = | |
3092 | gfc_build_library_function_decl (get_identifier (name), | |
3093 | rtype, 2, rtype, itype); | |
67fdae36 | 3094 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
22b139e1 | 3095 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
644cb69f FXC |
3096 | } |
3097 | ||
3098 | ctype = gfc_get_complex_type (rkinds[rkind]); | |
3099 | if (ctype && itype) | |
3100 | { | |
3101 | sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind], | |
3102 | ikinds[ikind]); | |
3103 | gfor_fndecl_math_powi[rkind][ikind].cmplx = | |
3104 | gfc_build_library_function_decl (get_identifier (name), | |
3105 | ctype, 2,ctype, itype); | |
67fdae36 | 3106 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
22b139e1 | 3107 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
644cb69f | 3108 | } |
5b200ac2 FW |
3109 | } |
3110 | } | |
644cb69f FXC |
3111 | #undef NIKINDS |
3112 | #undef NRKINDS | |
5b200ac2 FW |
3113 | } |
3114 | ||
6368f166 DF |
3115 | gfor_fndecl_math_ishftc4 = gfc_build_library_function_decl ( |
3116 | get_identifier (PREFIX("ishftc4")), | |
3117 | gfc_int4_type_node, 3, gfc_int4_type_node, gfc_int4_type_node, | |
3118 | gfc_int4_type_node); | |
22b139e1 JJ |
3119 | TREE_READONLY (gfor_fndecl_math_ishftc4) = 1; |
3120 | TREE_NOTHROW (gfor_fndecl_math_ishftc4) = 1; | |
8b704316 | 3121 | |
6368f166 DF |
3122 | gfor_fndecl_math_ishftc8 = gfc_build_library_function_decl ( |
3123 | get_identifier (PREFIX("ishftc8")), | |
3124 | gfc_int8_type_node, 3, gfc_int8_type_node, gfc_int4_type_node, | |
3125 | gfc_int4_type_node); | |
22b139e1 JJ |
3126 | TREE_READONLY (gfor_fndecl_math_ishftc8) = 1; |
3127 | TREE_NOTHROW (gfor_fndecl_math_ishftc8) = 1; | |
6368f166 | 3128 | |
644cb69f | 3129 | if (gfc_int16_type_node) |
22b139e1 JJ |
3130 | { |
3131 | gfor_fndecl_math_ishftc16 = gfc_build_library_function_decl ( | |
6368f166 DF |
3132 | get_identifier (PREFIX("ishftc16")), |
3133 | gfc_int16_type_node, 3, gfc_int16_type_node, gfc_int4_type_node, | |
3134 | gfc_int4_type_node); | |
22b139e1 JJ |
3135 | TREE_READONLY (gfor_fndecl_math_ishftc16) = 1; |
3136 | TREE_NOTHROW (gfor_fndecl_math_ishftc16) = 1; | |
3137 | } | |
644cb69f | 3138 | |
5a0aad31 FXC |
3139 | /* BLAS functions. */ |
3140 | { | |
dd52ecb0 | 3141 | tree pint = build_pointer_type (integer_type_node); |
5a0aad31 FXC |
3142 | tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind)); |
3143 | tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind)); | |
3144 | tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind)); | |
3145 | tree pz = build_pointer_type | |
3146 | (gfc_get_complex_type (gfc_default_double_kind)); | |
3147 | ||
3148 | gfor_fndecl_sgemm = gfc_build_library_function_decl | |
3149 | (get_identifier | |
3150 | (gfc_option.flag_underscoring ? "sgemm_" | |
3151 | : "sgemm"), | |
3152 | void_type_node, 15, pchar_type_node, | |
3153 | pchar_type_node, pint, pint, pint, ps, ps, pint, | |
dd52ecb0 JB |
3154 | ps, pint, ps, ps, pint, integer_type_node, |
3155 | integer_type_node); | |
5a0aad31 FXC |
3156 | gfor_fndecl_dgemm = gfc_build_library_function_decl |
3157 | (get_identifier | |
3158 | (gfc_option.flag_underscoring ? "dgemm_" | |
3159 | : "dgemm"), | |
3160 | void_type_node, 15, pchar_type_node, | |
3161 | pchar_type_node, pint, pint, pint, pd, pd, pint, | |
dd52ecb0 JB |
3162 | pd, pint, pd, pd, pint, integer_type_node, |
3163 | integer_type_node); | |
5a0aad31 FXC |
3164 | gfor_fndecl_cgemm = gfc_build_library_function_decl |
3165 | (get_identifier | |
3166 | (gfc_option.flag_underscoring ? "cgemm_" | |
3167 | : "cgemm"), | |
3168 | void_type_node, 15, pchar_type_node, | |
3169 | pchar_type_node, pint, pint, pint, pc, pc, pint, | |
dd52ecb0 JB |
3170 | pc, pint, pc, pc, pint, integer_type_node, |
3171 | integer_type_node); | |
5a0aad31 FXC |
3172 | gfor_fndecl_zgemm = gfc_build_library_function_decl |
3173 | (get_identifier | |
3174 | (gfc_option.flag_underscoring ? "zgemm_" | |
3175 | : "zgemm"), | |
3176 | void_type_node, 15, pchar_type_node, | |
3177 | pchar_type_node, pint, pint, pint, pz, pz, pint, | |
dd52ecb0 JB |
3178 | pz, pint, pz, pz, pint, integer_type_node, |
3179 | integer_type_node); | |
5a0aad31 FXC |
3180 | } |
3181 | ||
6de9cd9a | 3182 | /* Other functions. */ |
6368f166 DF |
3183 | gfor_fndecl_size0 = gfc_build_library_function_decl_with_spec ( |
3184 | get_identifier (PREFIX("size0")), ".R", | |
3185 | gfc_array_index_type, 1, pvoid_type_node); | |
4ca4be7f | 3186 | DECL_PURE_P (gfor_fndecl_size0) = 1; |
22b139e1 | 3187 | TREE_NOTHROW (gfor_fndecl_size0) = 1; |
6368f166 DF |
3188 | |
3189 | gfor_fndecl_size1 = gfc_build_library_function_decl_with_spec ( | |
3190 | get_identifier (PREFIX("size1")), ".R", | |
3191 | gfc_array_index_type, 2, pvoid_type_node, gfc_array_index_type); | |
4ca4be7f | 3192 | DECL_PURE_P (gfor_fndecl_size1) = 1; |
22b139e1 | 3193 | TREE_NOTHROW (gfor_fndecl_size1) = 1; |
6368f166 DF |
3194 | |
3195 | gfor_fndecl_iargc = gfc_build_library_function_decl ( | |
3196 | get_identifier (PREFIX ("iargc")), gfc_int4_type_node, 0); | |
22b139e1 | 3197 | TREE_NOTHROW (gfor_fndecl_iargc) = 1; |
6de9cd9a DN |
3198 | } |
3199 | ||
3200 | ||
3201 | /* Make prototypes for runtime library functions. */ | |
3202 | ||
3203 | void | |
3204 | gfc_build_builtin_function_decls (void) | |
3205 | { | |
e2cad04b | 3206 | tree gfc_int4_type_node = gfc_get_int_type (4); |
6de9cd9a | 3207 | |
6368f166 DF |
3208 | gfor_fndecl_stop_numeric = gfc_build_library_function_decl ( |
3209 | get_identifier (PREFIX("stop_numeric")), | |
3210 | void_type_node, 1, gfc_int4_type_node); | |
6d1b0f92 | 3211 | /* STOP doesn't return. */ |
eed61baa TK |
3212 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1; |
3213 | ||
cea59ace JD |
3214 | gfor_fndecl_stop_numeric_f08 = gfc_build_library_function_decl ( |
3215 | get_identifier (PREFIX("stop_numeric_f08")), | |
3216 | void_type_node, 1, gfc_int4_type_node); | |
3217 | /* STOP doesn't return. */ | |
3218 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric_f08) = 1; | |
3219 | ||
6368f166 DF |
3220 | gfor_fndecl_stop_string = gfc_build_library_function_decl_with_spec ( |
3221 | get_identifier (PREFIX("stop_string")), ".R.", | |
3222 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
6d1b0f92 | 3223 | /* STOP doesn't return. */ |
6368f166 | 3224 | TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1; |
4ca4be7f | 3225 | |
6368f166 DF |
3226 | gfor_fndecl_error_stop_numeric = gfc_build_library_function_decl ( |
3227 | get_identifier (PREFIX("error_stop_numeric")), | |
3228 | void_type_node, 1, gfc_int4_type_node); | |
6d1b0f92 JD |
3229 | /* ERROR STOP doesn't return. */ |
3230 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_numeric) = 1; | |
3231 | ||
6368f166 DF |
3232 | gfor_fndecl_error_stop_string = gfc_build_library_function_decl_with_spec ( |
3233 | get_identifier (PREFIX("error_stop_string")), ".R.", | |
3234 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
d0a4a61c TB |
3235 | /* ERROR STOP doesn't return. */ |
3236 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_string) = 1; | |
3237 | ||
6368f166 DF |
3238 | gfor_fndecl_pause_numeric = gfc_build_library_function_decl ( |
3239 | get_identifier (PREFIX("pause_numeric")), | |
3240 | void_type_node, 1, gfc_int4_type_node); | |
6d1b0f92 | 3241 | |
6368f166 DF |
3242 | gfor_fndecl_pause_string = gfc_build_library_function_decl_with_spec ( |
3243 | get_identifier (PREFIX("pause_string")), ".R.", | |
3244 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
6de9cd9a | 3245 | |
6368f166 DF |
3246 | gfor_fndecl_runtime_error = gfc_build_library_function_decl_with_spec ( |
3247 | get_identifier (PREFIX("runtime_error")), ".R", | |
3248 | void_type_node, -1, pchar_type_node); | |
16275f18 SB |
3249 | /* The runtime_error function does not return. */ |
3250 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1; | |
6de9cd9a | 3251 | |
6368f166 DF |
3252 | gfor_fndecl_runtime_error_at = gfc_build_library_function_decl_with_spec ( |
3253 | get_identifier (PREFIX("runtime_error_at")), ".RR", | |
3254 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
f96d606f JD |
3255 | /* The runtime_error_at function does not return. */ |
3256 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1; | |
8b704316 | 3257 | |
6368f166 DF |
3258 | gfor_fndecl_runtime_warning_at = gfc_build_library_function_decl_with_spec ( |
3259 | get_identifier (PREFIX("runtime_warning_at")), ".RR", | |
3260 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
3261 | ||
3262 | gfor_fndecl_generate_error = gfc_build_library_function_decl_with_spec ( | |
3263 | get_identifier (PREFIX("generate_error")), ".R.R", | |
3264 | void_type_node, 3, pvoid_type_node, integer_type_node, | |
3265 | pchar_type_node); | |
3266 | ||
3267 | gfor_fndecl_os_error = gfc_build_library_function_decl_with_spec ( | |
3268 | get_identifier (PREFIX("os_error")), ".R", | |
3269 | void_type_node, 1, pchar_type_node); | |
1529b8d9 FXC |
3270 | /* The runtime_error function does not return. */ |
3271 | TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1; | |
3272 | ||
6368f166 DF |
3273 | gfor_fndecl_set_args = gfc_build_library_function_decl ( |
3274 | get_identifier (PREFIX("set_args")), | |
3275 | void_type_node, 2, integer_type_node, | |
3276 | build_pointer_type (pchar_type_node)); | |
092231a8 | 3277 | |
6368f166 DF |
3278 | gfor_fndecl_set_fpe = gfc_build_library_function_decl ( |
3279 | get_identifier (PREFIX("set_fpe")), | |
3280 | void_type_node, 1, integer_type_node); | |
944b8b35 | 3281 | |
8b198102 FXC |
3282 | gfor_fndecl_ieee_procedure_entry = gfc_build_library_function_decl ( |
3283 | get_identifier (PREFIX("ieee_procedure_entry")), | |
3284 | void_type_node, 1, pvoid_type_node); | |
3285 | ||
3286 | gfor_fndecl_ieee_procedure_exit = gfc_build_library_function_decl ( | |
3287 | get_identifier (PREFIX("ieee_procedure_exit")), | |
3288 | void_type_node, 1, pvoid_type_node); | |
3289 | ||
68d2e027 | 3290 | /* Keep the array dimension in sync with the call, later in this file. */ |
6368f166 DF |
3291 | gfor_fndecl_set_options = gfc_build_library_function_decl_with_spec ( |
3292 | get_identifier (PREFIX("set_options")), "..R", | |
3293 | void_type_node, 2, integer_type_node, | |
3294 | build_pointer_type (integer_type_node)); | |
8b67b708 | 3295 | |
6368f166 DF |
3296 | gfor_fndecl_set_convert = gfc_build_library_function_decl ( |
3297 | get_identifier (PREFIX("set_convert")), | |
3298 | void_type_node, 1, integer_type_node); | |
eaa90d25 | 3299 | |
6368f166 DF |
3300 | gfor_fndecl_set_record_marker = gfc_build_library_function_decl ( |
3301 | get_identifier (PREFIX("set_record_marker")), | |
3302 | void_type_node, 1, integer_type_node); | |
d67ab5ee | 3303 | |
6368f166 DF |
3304 | gfor_fndecl_set_max_subrecord_length = gfc_build_library_function_decl ( |
3305 | get_identifier (PREFIX("set_max_subrecord_length")), | |
3306 | void_type_node, 1, integer_type_node); | |
07b3bbf2 | 3307 | |
0b7b376d | 3308 | gfor_fndecl_in_pack = gfc_build_library_function_decl_with_spec ( |
6368f166 DF |
3309 | get_identifier (PREFIX("internal_pack")), ".r", |
3310 | pvoid_type_node, 1, pvoid_type_node); | |
6de9cd9a | 3311 | |
0b7b376d | 3312 | gfor_fndecl_in_unpack = gfc_build_library_function_decl_with_spec ( |
6368f166 DF |
3313 | get_identifier (PREFIX("internal_unpack")), ".wR", |
3314 | void_type_node, 2, pvoid_type_node, pvoid_type_node); | |
3315 | ||
3316 | gfor_fndecl_associated = gfc_build_library_function_decl_with_spec ( | |
3317 | get_identifier (PREFIX("associated")), ".RR", | |
3318 | integer_type_node, 2, ppvoid_type_node, ppvoid_type_node); | |
4ca4be7f | 3319 | DECL_PURE_P (gfor_fndecl_associated) = 1; |
22b139e1 | 3320 | TREE_NOTHROW (gfor_fndecl_associated) = 1; |
6de9cd9a | 3321 | |
60386f50 TB |
3322 | /* Coarray library calls. */ |
3323 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
3324 | { | |
3325 | tree pint_type, pppchar_type; | |
3326 | ||
3327 | pint_type = build_pointer_type (integer_type_node); | |
3328 | pppchar_type | |
3329 | = build_pointer_type (build_pointer_type (pchar_type_node)); | |
3330 | ||
3331 | gfor_fndecl_caf_init = gfc_build_library_function_decl ( | |
3332 | get_identifier (PREFIX("caf_init")), void_type_node, | |
242d4d3f | 3333 | 2, pint_type, pppchar_type); |
60386f50 TB |
3334 | |
3335 | gfor_fndecl_caf_finalize = gfc_build_library_function_decl ( | |
3336 | get_identifier (PREFIX("caf_finalize")), void_type_node, 0); | |
3337 | ||
a8a5f4a9 TB |
3338 | gfor_fndecl_caf_this_image = gfc_build_library_function_decl ( |
3339 | get_identifier (PREFIX("caf_this_image")), integer_type_node, | |
3340 | 1, integer_type_node); | |
3341 | ||
3342 | gfor_fndecl_caf_num_images = gfc_build_library_function_decl ( | |
3343 | get_identifier (PREFIX("caf_num_images")), integer_type_node, | |
a9fe6877 | 3344 | 2, integer_type_node, integer_type_node); |
a8a5f4a9 | 3345 | |
b8ff4e88 TB |
3346 | gfor_fndecl_caf_register = gfc_build_library_function_decl_with_spec ( |
3347 | get_identifier (PREFIX("caf_register")), "...WWW", pvoid_type_node, 6, | |
3348 | size_type_node, integer_type_node, ppvoid_type_node, pint_type, | |
5d81ddd0 TB |
3349 | pchar_type_node, integer_type_node); |
3350 | ||
3351 | gfor_fndecl_caf_deregister = gfc_build_library_function_decl_with_spec ( | |
3352 | get_identifier (PREFIX("caf_deregister")), ".WWW", void_type_node, 4, | |
3353 | ppvoid_type_node, pint_type, pchar_type_node, integer_type_node); | |
b8ff4e88 | 3354 | |
b5116268 | 3355 | gfor_fndecl_caf_get = gfc_build_library_function_decl_with_spec ( |
93e2e046 | 3356 | get_identifier (PREFIX("caf_get")), ".R.RRRW", void_type_node, 9, |
b5116268 | 3357 | pvoid_type_node, size_type_node, integer_type_node, pvoid_type_node, |
93e2e046 TB |
3358 | pvoid_type_node, pvoid_type_node, integer_type_node, integer_type_node, |
3359 | boolean_type_node); | |
b5116268 TB |
3360 | |
3361 | gfor_fndecl_caf_send = gfc_build_library_function_decl_with_spec ( | |
93e2e046 | 3362 | get_identifier (PREFIX("caf_send")), ".R.RRRR", void_type_node, 9, |
b5116268 | 3363 | pvoid_type_node, size_type_node, integer_type_node, pvoid_type_node, |
93e2e046 TB |
3364 | pvoid_type_node, pvoid_type_node, integer_type_node, integer_type_node, |
3365 | boolean_type_node); | |
b5116268 TB |
3366 | |
3367 | gfor_fndecl_caf_sendget = gfc_build_library_function_decl_with_spec ( | |
3368 | get_identifier (PREFIX("caf_sendget")), ".R.RRRR.RRR", void_type_node, | |
93e2e046 | 3369 | 13, pvoid_type_node, size_type_node, integer_type_node, pvoid_type_node, |
b5116268 | 3370 | pvoid_type_node, pvoid_type_node, size_type_node, integer_type_node, |
93e2e046 TB |
3371 | pvoid_type_node, pvoid_type_node, integer_type_node, integer_type_node, |
3372 | boolean_type_node); | |
b5116268 | 3373 | |
60386f50 | 3374 | gfor_fndecl_caf_sync_all = gfc_build_library_function_decl_with_spec ( |
f5c01f5b | 3375 | get_identifier (PREFIX("caf_sync_all")), ".WW", void_type_node, |
d62cf3df | 3376 | 3, pint_type, pchar_type_node, integer_type_node); |
60386f50 TB |
3377 | |
3378 | gfor_fndecl_caf_sync_images = gfc_build_library_function_decl_with_spec ( | |
f5c01f5b DC |
3379 | get_identifier (PREFIX("caf_sync_images")), ".RRWW", void_type_node, |
3380 | 5, integer_type_node, pint_type, pint_type, | |
d62cf3df | 3381 | pchar_type_node, integer_type_node); |
60386f50 TB |
3382 | |
3383 | gfor_fndecl_caf_error_stop = gfc_build_library_function_decl ( | |
3384 | get_identifier (PREFIX("caf_error_stop")), | |
3385 | void_type_node, 1, gfc_int4_type_node); | |
3386 | /* CAF's ERROR STOP doesn't return. */ | |
3387 | TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop) = 1; | |
3388 | ||
3389 | gfor_fndecl_caf_error_stop_str = gfc_build_library_function_decl_with_spec ( | |
3390 | get_identifier (PREFIX("caf_error_stop_str")), ".R.", | |
3391 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
3392 | /* CAF's ERROR STOP doesn't return. */ | |
3393 | TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop_str) = 1; | |
d62cf3df | 3394 | |
42a8246d TB |
3395 | gfor_fndecl_caf_atomic_def = gfc_build_library_function_decl_with_spec ( |
3396 | get_identifier (PREFIX("caf_atomic_define")), "R..RW", | |
3397 | void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node, | |
3398 | pvoid_type_node, pint_type, integer_type_node, integer_type_node); | |
3399 | ||
3400 | gfor_fndecl_caf_atomic_ref = gfc_build_library_function_decl_with_spec ( | |
3401 | get_identifier (PREFIX("caf_atomic_ref")), "R..WW", | |
3402 | void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node, | |
3403 | pvoid_type_node, pint_type, integer_type_node, integer_type_node); | |
3404 | ||
3405 | gfor_fndecl_caf_atomic_cas = gfc_build_library_function_decl_with_spec ( | |
3406 | get_identifier (PREFIX("caf_atomic_cas")), "R..WRRW", | |
3407 | void_type_node, 9, pvoid_type_node, size_type_node, integer_type_node, | |
3408 | pvoid_type_node, pvoid_type_node, pvoid_type_node, pint_type, | |
3409 | integer_type_node, integer_type_node); | |
3410 | ||
3411 | gfor_fndecl_caf_atomic_op = gfc_build_library_function_decl_with_spec ( | |
3412 | get_identifier (PREFIX("caf_atomic_op")), ".R..RWW", | |
3413 | void_type_node, 9, integer_type_node, pvoid_type_node, size_type_node, | |
3414 | integer_type_node, pvoid_type_node, pvoid_type_node, pint_type, | |
3415 | integer_type_node, integer_type_node); | |
3416 | ||
bc0229f9 TB |
3417 | gfor_fndecl_caf_lock = gfc_build_library_function_decl_with_spec ( |
3418 | get_identifier (PREFIX("caf_lock")), "R..WWW", | |
3419 | void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node, | |
3420 | pint_type, pint_type, pchar_type_node, integer_type_node); | |
3421 | ||
3422 | gfor_fndecl_caf_unlock = gfc_build_library_function_decl_with_spec ( | |
3423 | get_identifier (PREFIX("caf_unlock")), "R..WW", | |
3424 | void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node, | |
3425 | pint_type, pchar_type_node, integer_type_node); | |
3426 | ||
d62cf3df | 3427 | gfor_fndecl_co_max = gfc_build_library_function_decl_with_spec ( |
b5116268 TB |
3428 | get_identifier (PREFIX("caf_co_max")), "W.WW", |
3429 | void_type_node, 6, pvoid_type_node, integer_type_node, | |
d62cf3df TB |
3430 | pint_type, pchar_type_node, integer_type_node, integer_type_node); |
3431 | ||
3432 | gfor_fndecl_co_min = gfc_build_library_function_decl_with_spec ( | |
b5116268 TB |
3433 | get_identifier (PREFIX("caf_co_min")), "W.WW", |
3434 | void_type_node, 6, pvoid_type_node, integer_type_node, | |
d62cf3df TB |
3435 | pint_type, pchar_type_node, integer_type_node, integer_type_node); |
3436 | ||
3437 | gfor_fndecl_co_sum = gfc_build_library_function_decl_with_spec ( | |
b5116268 TB |
3438 | get_identifier (PREFIX("caf_co_sum")), "W.WW", |
3439 | void_type_node, 5, pvoid_type_node, integer_type_node, | |
d62cf3df | 3440 | pint_type, pchar_type_node, integer_type_node); |
60386f50 TB |
3441 | } |
3442 | ||
6de9cd9a DN |
3443 | gfc_build_intrinsic_function_decls (); |
3444 | gfc_build_intrinsic_lib_fndecls (); | |
3445 | gfc_build_io_library_fndecls (); | |
3446 | } | |
3447 | ||
3448 | ||
1f2959f0 | 3449 | /* Evaluate the length of dummy character variables. */ |
6de9cd9a | 3450 | |
0019d498 DK |
3451 | static void |
3452 | gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, | |
3453 | gfc_wrapped_block *block) | |
6de9cd9a | 3454 | { |
0019d498 | 3455 | stmtblock_t init; |
6de9cd9a | 3456 | |
faf28b3a | 3457 | gfc_finish_decl (cl->backend_decl); |
6de9cd9a | 3458 | |
0019d498 | 3459 | gfc_start_block (&init); |
6de9cd9a DN |
3460 | |
3461 | /* Evaluate the string length expression. */ | |
0019d498 | 3462 | gfc_conv_string_length (cl, NULL, &init); |
417ab240 | 3463 | |
0019d498 | 3464 | gfc_trans_vla_type_sizes (sym, &init); |
417ab240 | 3465 | |
0019d498 | 3466 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
6de9cd9a DN |
3467 | } |
3468 | ||
3469 | ||
3470 | /* Allocate and cleanup an automatic character variable. */ | |
3471 | ||
0019d498 DK |
3472 | static void |
3473 | gfc_trans_auto_character_variable (gfc_symbol * sym, gfc_wrapped_block * block) | |
6de9cd9a | 3474 | { |
0019d498 | 3475 | stmtblock_t init; |
6de9cd9a | 3476 | tree decl; |
6de9cd9a DN |
3477 | tree tmp; |
3478 | ||
6e45f57b | 3479 | gcc_assert (sym->backend_decl); |
bc21d315 | 3480 | gcc_assert (sym->ts.u.cl && sym->ts.u.cl->length); |
6de9cd9a | 3481 | |
323cea66 | 3482 | gfc_init_block (&init); |
6de9cd9a DN |
3483 | |
3484 | /* Evaluate the string length expression. */ | |
0019d498 | 3485 | gfc_conv_string_length (sym->ts.u.cl, NULL, &init); |
6de9cd9a | 3486 | |
0019d498 | 3487 | gfc_trans_vla_type_sizes (sym, &init); |
417ab240 | 3488 | |
6de9cd9a DN |
3489 | decl = sym->backend_decl; |
3490 | ||
1a186ec5 | 3491 | /* Emit a DECL_EXPR for this variable, which will cause the |
4ab2db93 | 3492 | gimplifier to allocate storage, and all that good stuff. */ |
bc98ed60 | 3493 | tmp = fold_build1_loc (input_location, DECL_EXPR, TREE_TYPE (decl), decl); |
0019d498 | 3494 | gfc_add_expr_to_block (&init, tmp); |
1a186ec5 | 3495 | |
0019d498 | 3496 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
6de9cd9a DN |
3497 | } |
3498 | ||
910450c1 FW |
3499 | /* Set the initial value of ASSIGN statement auxiliary variable explicitly. */ |
3500 | ||
0019d498 DK |
3501 | static void |
3502 | gfc_trans_assign_aux_var (gfc_symbol * sym, gfc_wrapped_block * block) | |
910450c1 | 3503 | { |
0019d498 | 3504 | stmtblock_t init; |
910450c1 FW |
3505 | |
3506 | gcc_assert (sym->backend_decl); | |
0019d498 | 3507 | gfc_start_block (&init); |
910450c1 FW |
3508 | |
3509 | /* Set the initial value to length. See the comments in | |
3510 | function gfc_add_assign_aux_vars in this file. */ | |
0019d498 | 3511 | gfc_add_modify (&init, GFC_DECL_STRING_LEN (sym->backend_decl), |
df09d1d5 | 3512 | build_int_cst (gfc_charlen_type_node, -2)); |
910450c1 | 3513 | |
0019d498 | 3514 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
910450c1 FW |
3515 | } |
3516 | ||
417ab240 JJ |
3517 | static void |
3518 | gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body) | |
3519 | { | |
3520 | tree t = *tp, var, val; | |
3521 | ||
3522 | if (t == NULL || t == error_mark_node) | |
3523 | return; | |
3524 | if (TREE_CONSTANT (t) || DECL_P (t)) | |
3525 | return; | |
3526 | ||
3527 | if (TREE_CODE (t) == SAVE_EXPR) | |
3528 | { | |
3529 | if (SAVE_EXPR_RESOLVED_P (t)) | |
3530 | { | |
3531 | *tp = TREE_OPERAND (t, 0); | |
3532 | return; | |
3533 | } | |
3534 | val = TREE_OPERAND (t, 0); | |
3535 | } | |
3536 | else | |
3537 | val = t; | |
3538 | ||
3539 | var = gfc_create_var_np (TREE_TYPE (t), NULL); | |
3540 | gfc_add_decl_to_function (var); | |
726a989a | 3541 | gfc_add_modify (body, var, val); |
417ab240 JJ |
3542 | if (TREE_CODE (t) == SAVE_EXPR) |
3543 | TREE_OPERAND (t, 0) = var; | |
3544 | *tp = var; | |
3545 | } | |
3546 | ||
3547 | static void | |
3548 | gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body) | |
3549 | { | |
3550 | tree t; | |
3551 | ||
3552 | if (type == NULL || type == error_mark_node) | |
3553 | return; | |
3554 | ||
3555 | type = TYPE_MAIN_VARIANT (type); | |
3556 | ||
3557 | if (TREE_CODE (type) == INTEGER_TYPE) | |
3558 | { | |
3559 | gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body); | |
3560 | gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body); | |
3561 | ||
3562 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3563 | { | |
3564 | TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type); | |
3565 | TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type); | |
3566 | } | |
3567 | } | |
3568 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
3569 | { | |
3570 | gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body); | |
3571 | gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body); | |
3572 | gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body); | |
3573 | gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body); | |
3574 | ||
3575 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3576 | { | |
3577 | TYPE_SIZE (t) = TYPE_SIZE (type); | |
3578 | TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type); | |
3579 | } | |
3580 | } | |
3581 | } | |
3582 | ||
3583 | /* Make sure all type sizes and array domains are either constant, | |
3584 | or variable or parameter decls. This is a simplified variant | |
3585 | of gimplify_type_sizes, but we can't use it here, as none of the | |
3586 | variables in the expressions have been gimplified yet. | |
3587 | As type sizes and domains for various variable length arrays | |
3588 | contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars | |
3589 | time, without this routine gimplify_type_sizes in the middle-end | |
3590 | could result in the type sizes being gimplified earlier than where | |
3591 | those variables are initialized. */ | |
3592 | ||
3593 | void | |
3594 | gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body) | |
3595 | { | |
3596 | tree type = TREE_TYPE (sym->backend_decl); | |
3597 | ||
3598 | if (TREE_CODE (type) == FUNCTION_TYPE | |
3599 | && (sym->attr.function || sym->attr.result || sym->attr.entry)) | |
3600 | { | |
3601 | if (! current_fake_result_decl) | |
3602 | return; | |
3603 | ||
3604 | type = TREE_TYPE (TREE_VALUE (current_fake_result_decl)); | |
3605 | } | |
3606 | ||
3607 | while (POINTER_TYPE_P (type)) | |
3608 | type = TREE_TYPE (type); | |
3609 | ||
3610 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
3611 | { | |
3612 | tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type); | |
3613 | ||
3614 | while (POINTER_TYPE_P (etype)) | |
3615 | etype = TREE_TYPE (etype); | |
3616 | ||
3617 | gfc_trans_vla_type_sizes_1 (etype, body); | |
3618 | } | |
3619 | ||
3620 | gfc_trans_vla_type_sizes_1 (type, body); | |
3621 | } | |
3622 | ||
6de9cd9a | 3623 | |
b7b184a8 | 3624 | /* Initialize a derived type by building an lvalue from the symbol |
2b56d6a4 TB |
3625 | and using trans_assignment to do the work. Set dealloc to false |
3626 | if no deallocation prior the assignment is needed. */ | |
0019d498 DK |
3627 | void |
3628 | gfc_init_default_dt (gfc_symbol * sym, stmtblock_t * block, bool dealloc) | |
d3837072 | 3629 | { |
b7b184a8 | 3630 | gfc_expr *e; |
d3837072 PT |
3631 | tree tmp; |
3632 | tree present; | |
3633 | ||
0019d498 DK |
3634 | gcc_assert (block); |
3635 | ||
b7b184a8 PT |
3636 | gcc_assert (!sym->attr.allocatable); |
3637 | gfc_set_sym_referenced (sym); | |
3638 | e = gfc_lval_expr_from_sym (sym); | |
2b56d6a4 | 3639 | tmp = gfc_trans_assignment (e, sym->value, false, dealloc); |
ba6f7079 TB |
3640 | if (sym->attr.dummy && (sym->attr.optional |
3641 | || sym->ns->proc_name->attr.entry_master)) | |
d3837072 | 3642 | { |
b7b184a8 | 3643 | present = gfc_conv_expr_present (sym); |
5d44e5c8 TB |
3644 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), present, |
3645 | tmp, build_empty_stmt (input_location)); | |
d3837072 | 3646 | } |
0019d498 | 3647 | gfc_add_expr_to_block (block, tmp); |
b7b184a8 | 3648 | gfc_free_expr (e); |
d3837072 PT |
3649 | } |
3650 | ||
3651 | ||
2c69d527 PT |
3652 | /* Initialize INTENT(OUT) derived type dummies. As well as giving |
3653 | them their default initializer, if they do not have allocatable | |
3654 | components, they have their allocatable components deallocated. */ | |
3655 | ||
0019d498 DK |
3656 | static void |
3657 | init_intent_out_dt (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
b7b184a8 | 3658 | { |
0019d498 | 3659 | stmtblock_t init; |
b7b184a8 | 3660 | gfc_formal_arglist *f; |
2c69d527 | 3661 | tree tmp; |
8a272531 | 3662 | tree present; |
b7b184a8 | 3663 | |
0019d498 | 3664 | gfc_init_block (&init); |
4cbc9039 | 3665 | for (f = gfc_sym_get_dummy_args (proc_sym); f; f = f->next) |
b7b184a8 | 3666 | if (f->sym && f->sym->attr.intent == INTENT_OUT |
758e12af TB |
3667 | && !f->sym->attr.pointer |
3668 | && f->sym->ts.type == BT_DERIVED) | |
2c69d527 | 3669 | { |
ed3f1ef2 TB |
3670 | tmp = NULL_TREE; |
3671 | ||
3672 | /* Note: Allocatables are excluded as they are already handled | |
3673 | by the caller. */ | |
3674 | if (!f->sym->attr.allocatable | |
3675 | && gfc_is_finalizable (f->sym->ts.u.derived, NULL)) | |
2c69d527 | 3676 | { |
ed3f1ef2 TB |
3677 | stmtblock_t block; |
3678 | gfc_expr *e; | |
3679 | ||
3680 | gfc_init_block (&block); | |
3681 | f->sym->attr.referenced = 1; | |
3682 | e = gfc_lval_expr_from_sym (f->sym); | |
3683 | gfc_add_finalizer_call (&block, e); | |
3684 | gfc_free_expr (e); | |
3685 | tmp = gfc_finish_block (&block); | |
3686 | } | |
8a272531 | 3687 | |
ed3f1ef2 TB |
3688 | if (tmp == NULL_TREE && !f->sym->attr.allocatable |
3689 | && f->sym->ts.u.derived->attr.alloc_comp && !f->sym->value) | |
3690 | tmp = gfc_deallocate_alloc_comp (f->sym->ts.u.derived, | |
3691 | f->sym->backend_decl, | |
3692 | f->sym->as ? f->sym->as->rank : 0); | |
8a272531 | 3693 | |
ed3f1ef2 TB |
3694 | if (tmp != NULL_TREE && (f->sym->attr.optional |
3695 | || f->sym->ns->proc_name->attr.entry_master)) | |
3696 | { | |
3697 | present = gfc_conv_expr_present (f->sym); | |
3698 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), | |
3699 | present, tmp, build_empty_stmt (input_location)); | |
2c69d527 | 3700 | } |
ed3f1ef2 TB |
3701 | |
3702 | if (tmp != NULL_TREE) | |
3703 | gfc_add_expr_to_block (&init, tmp); | |
3704 | else if (f->sym->value && !f->sym->attr.allocatable) | |
0019d498 | 3705 | gfc_init_default_dt (f->sym, &init, true); |
2c69d527 | 3706 | } |
c7f17815 JW |
3707 | else if (f->sym && f->sym->attr.intent == INTENT_OUT |
3708 | && f->sym->ts.type == BT_CLASS | |
3709 | && !CLASS_DATA (f->sym)->attr.class_pointer | |
ed3f1ef2 | 3710 | && !CLASS_DATA (f->sym)->attr.allocatable) |
c7f17815 | 3711 | { |
ed3f1ef2 TB |
3712 | stmtblock_t block; |
3713 | gfc_expr *e; | |
3714 | ||
3715 | gfc_init_block (&block); | |
3716 | f->sym->attr.referenced = 1; | |
3717 | e = gfc_lval_expr_from_sym (f->sym); | |
3718 | gfc_add_finalizer_call (&block, e); | |
3719 | gfc_free_expr (e); | |
3720 | tmp = gfc_finish_block (&block); | |
c7f17815 JW |
3721 | |
3722 | if (f->sym->attr.optional || f->sym->ns->proc_name->attr.entry_master) | |
3723 | { | |
3724 | present = gfc_conv_expr_present (f->sym); | |
3725 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), | |
3726 | present, tmp, | |
3727 | build_empty_stmt (input_location)); | |
3728 | } | |
3729 | ||
3730 | gfc_add_expr_to_block (&init, tmp); | |
3731 | } | |
b7b184a8 | 3732 | |
0019d498 | 3733 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
b7b184a8 PT |
3734 | } |
3735 | ||
d3837072 | 3736 | |
6de9cd9a DN |
3737 | /* Generate function entry and exit code, and add it to the function body. |
3738 | This includes: | |
f8d0aee5 | 3739 | Allocation and initialization of array variables. |
6de9cd9a | 3740 | Allocation of character string variables. |
910450c1 | 3741 | Initialization and possibly repacking of dummy arrays. |
1517fd57 | 3742 | Initialization of ASSIGN statement auxiliary variable. |
571d54de | 3743 | Initialization of ASSOCIATE names. |
1517fd57 | 3744 | Automatic deallocation. */ |
6de9cd9a | 3745 | |
d74d8807 DK |
3746 | void |
3747 | gfc_trans_deferred_vars (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
6de9cd9a DN |
3748 | { |
3749 | locus loc; | |
3750 | gfc_symbol *sym; | |
417ab240 | 3751 | gfc_formal_arglist *f; |
0019d498 | 3752 | stmtblock_t tmpblock; |
7114edca | 3753 | bool seen_trans_deferred_array = false; |
8d51f26f PT |
3754 | tree tmp = NULL; |
3755 | gfc_expr *e; | |
3756 | gfc_se se; | |
3757 | stmtblock_t init; | |
6de9cd9a DN |
3758 | |
3759 | /* Deal with implicit return variables. Explicit return variables will | |
3760 | already have been added. */ | |
3761 | if (gfc_return_by_reference (proc_sym) && proc_sym->result == proc_sym) | |
3762 | { | |
3763 | if (!current_fake_result_decl) | |
3764 | { | |
d198b59a JJ |
3765 | gfc_entry_list *el = NULL; |
3766 | if (proc_sym->attr.entry_master) | |
3767 | { | |
3768 | for (el = proc_sym->ns->entries; el; el = el->next) | |
3769 | if (el->sym != el->sym->result) | |
3770 | break; | |
3771 | } | |
766d0c8c DF |
3772 | /* TODO: move to the appropriate place in resolve.c. */ |
3773 | if (warn_return_type && el == NULL) | |
3774 | gfc_warning ("Return value of function '%s' at %L not set", | |
3775 | proc_sym->name, &proc_sym->declared_at); | |
6de9cd9a | 3776 | } |
d198b59a | 3777 | else if (proc_sym->as) |
6de9cd9a | 3778 | { |
417ab240 | 3779 | tree result = TREE_VALUE (current_fake_result_decl); |
d74d8807 | 3780 | gfc_trans_dummy_array_bias (proc_sym, result, block); |
f5f701ad PT |
3781 | |
3782 | /* An automatic character length, pointer array result. */ | |
3783 | if (proc_sym->ts.type == BT_CHARACTER | |
bc21d315 | 3784 | && TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) |
d74d8807 | 3785 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
6de9cd9a DN |
3786 | } |
3787 | else if (proc_sym->ts.type == BT_CHARACTER) | |
3788 | { | |
8d51f26f PT |
3789 | if (proc_sym->ts.deferred) |
3790 | { | |
3791 | tmp = NULL; | |
ceccaacf TB |
3792 | gfc_save_backend_locus (&loc); |
3793 | gfc_set_backend_locus (&proc_sym->declared_at); | |
8d51f26f PT |
3794 | gfc_start_block (&init); |
3795 | /* Zero the string length on entry. */ | |
3796 | gfc_add_modify (&init, proc_sym->ts.u.cl->backend_decl, | |
3797 | build_int_cst (gfc_charlen_type_node, 0)); | |
3798 | /* Null the pointer. */ | |
3799 | e = gfc_lval_expr_from_sym (proc_sym); | |
3800 | gfc_init_se (&se, NULL); | |
3801 | se.want_pointer = 1; | |
3802 | gfc_conv_expr (&se, e); | |
3803 | gfc_free_expr (e); | |
3804 | tmp = se.expr; | |
3805 | gfc_add_modify (&init, tmp, | |
3806 | fold_convert (TREE_TYPE (se.expr), | |
3807 | null_pointer_node)); | |
ceccaacf | 3808 | gfc_restore_backend_locus (&loc); |
8d51f26f PT |
3809 | |
3810 | /* Pass back the string length on exit. */ | |
3811 | tmp = proc_sym->ts.u.cl->passed_length; | |
3812 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
3813 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
3814 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
3815 | gfc_charlen_type_node, tmp, | |
3816 | proc_sym->ts.u.cl->backend_decl); | |
3817 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
3818 | } | |
3819 | else if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) | |
d74d8807 | 3820 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
6de9cd9a DN |
3821 | } |
3822 | else | |
973ff4c0 TS |
3823 | gcc_assert (gfc_option.flag_f2c |
3824 | && proc_sym->ts.type == BT_COMPLEX); | |
6de9cd9a DN |
3825 | } |
3826 | ||
d3837072 PT |
3827 | /* Initialize the INTENT(OUT) derived type dummy arguments. This |
3828 | should be done here so that the offsets and lbounds of arrays | |
3829 | are available. */ | |
ceccaacf TB |
3830 | gfc_save_backend_locus (&loc); |
3831 | gfc_set_backend_locus (&proc_sym->declared_at); | |
d74d8807 | 3832 | init_intent_out_dt (proc_sym, block); |
ceccaacf | 3833 | gfc_restore_backend_locus (&loc); |
d3837072 | 3834 | |
6de9cd9a DN |
3835 | for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink) |
3836 | { | |
ea8b72e6 TB |
3837 | bool alloc_comp_or_fini = (sym->ts.type == BT_DERIVED) |
3838 | && (sym->ts.u.derived->attr.alloc_comp | |
3839 | || gfc_is_finalizable (sym->ts.u.derived, | |
3840 | NULL)); | |
571d54de | 3841 | if (sym->assoc) |
6312ef45 JW |
3842 | continue; |
3843 | ||
0c1e1df8 JJ |
3844 | if (sym->attr.subref_array_pointer |
3845 | && GFC_DECL_SPAN (sym->backend_decl) | |
3846 | && !TREE_STATIC (GFC_DECL_SPAN (sym->backend_decl))) | |
3847 | { | |
3848 | gfc_init_block (&tmpblock); | |
3849 | gfc_add_modify (&tmpblock, GFC_DECL_SPAN (sym->backend_decl), | |
3850 | build_int_cst (gfc_array_index_type, 0)); | |
3851 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
3852 | NULL_TREE); | |
3853 | } | |
3854 | ||
e1e3b9d3 TB |
3855 | if (sym->ts.type == BT_CLASS |
3856 | && (sym->attr.save || gfc_option.flag_max_stack_var_size == 0) | |
f118468a TB |
3857 | && CLASS_DATA (sym)->attr.allocatable) |
3858 | { | |
3859 | tree vptr; | |
3860 | ||
3861 | if (UNLIMITED_POLY (sym)) | |
3862 | vptr = null_pointer_node; | |
3863 | else | |
3864 | { | |
3865 | gfc_symbol *vsym; | |
3866 | vsym = gfc_find_derived_vtab (sym->ts.u.derived); | |
3867 | vptr = gfc_get_symbol_decl (vsym); | |
3868 | vptr = gfc_build_addr_expr (NULL, vptr); | |
3869 | } | |
3870 | ||
3871 | if (CLASS_DATA (sym)->attr.dimension | |
3872 | || (CLASS_DATA (sym)->attr.codimension | |
3873 | && gfc_option.coarray != GFC_FCOARRAY_LIB)) | |
3874 | { | |
3875 | tmp = gfc_class_data_get (sym->backend_decl); | |
3876 | tmp = gfc_build_null_descriptor (TREE_TYPE (tmp)); | |
3877 | } | |
3878 | else | |
3879 | tmp = null_pointer_node; | |
3880 | ||
3881 | DECL_INITIAL (sym->backend_decl) | |
3882 | = gfc_class_set_static_fields (sym->backend_decl, vptr, tmp); | |
3883 | TREE_CONSTANT (DECL_INITIAL (sym->backend_decl)) = 1; | |
3884 | } | |
3885 | else if (sym->attr.dimension || sym->attr.codimension) | |
6de9cd9a | 3886 | { |
cde3a7a9 AL |
3887 | /* Assumed-size Cray pointees need to be treated as AS_EXPLICIT. */ |
3888 | array_type tmp = sym->as->type; | |
3889 | if (tmp == AS_ASSUMED_SIZE && sym->as->cp_was_assumed) | |
3890 | tmp = AS_EXPLICIT; | |
3891 | switch (tmp) | |
6de9cd9a DN |
3892 | { |
3893 | case AS_EXPLICIT: | |
3894 | if (sym->attr.dummy || sym->attr.result) | |
d74d8807 | 3895 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
6de9cd9a DN |
3896 | else if (sym->attr.pointer || sym->attr.allocatable) |
3897 | { | |
3898 | if (TREE_STATIC (sym->backend_decl)) | |
ceccaacf TB |
3899 | { |
3900 | gfc_save_backend_locus (&loc); | |
3901 | gfc_set_backend_locus (&sym->declared_at); | |
3902 | gfc_trans_static_array_pointer (sym); | |
3903 | gfc_restore_backend_locus (&loc); | |
3904 | } | |
6de9cd9a | 3905 | else |
7114edca PT |
3906 | { |
3907 | seen_trans_deferred_array = true; | |
d74d8807 | 3908 | gfc_trans_deferred_array (sym, block); |
7114edca | 3909 | } |
6de9cd9a | 3910 | } |
9f3761c5 TB |
3911 | else if (sym->attr.codimension && TREE_STATIC (sym->backend_decl)) |
3912 | { | |
3913 | gfc_init_block (&tmpblock); | |
3914 | gfc_trans_array_cobounds (TREE_TYPE (sym->backend_decl), | |
3915 | &tmpblock, sym); | |
3916 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
3917 | NULL_TREE); | |
3918 | continue; | |
3919 | } | |
b0936265 | 3920 | else |
6de9cd9a | 3921 | { |
ceccaacf TB |
3922 | gfc_save_backend_locus (&loc); |
3923 | gfc_set_backend_locus (&sym->declared_at); | |
3924 | ||
ea8b72e6 | 3925 | if (alloc_comp_or_fini) |
7114edca PT |
3926 | { |
3927 | seen_trans_deferred_array = true; | |
d74d8807 | 3928 | gfc_trans_deferred_array (sym, block); |
7114edca | 3929 | } |
b7b184a8 PT |
3930 | else if (sym->ts.type == BT_DERIVED |
3931 | && sym->value | |
3932 | && !sym->attr.data | |
3933 | && sym->attr.save == SAVE_NONE) | |
0019d498 DK |
3934 | { |
3935 | gfc_start_block (&tmpblock); | |
3936 | gfc_init_default_dt (sym, &tmpblock, false); | |
d74d8807 | 3937 | gfc_add_init_cleanup (block, |
0019d498 DK |
3938 | gfc_finish_block (&tmpblock), |
3939 | NULL_TREE); | |
3940 | } | |
7114edca | 3941 | |
0019d498 | 3942 | gfc_trans_auto_array_allocation (sym->backend_decl, |
d74d8807 | 3943 | sym, block); |
363aab21 | 3944 | gfc_restore_backend_locus (&loc); |
6de9cd9a DN |
3945 | } |
3946 | break; | |
3947 | ||
3948 | case AS_ASSUMED_SIZE: | |
3949 | /* Must be a dummy parameter. */ | |
b3aefde2 | 3950 | gcc_assert (sym->attr.dummy || sym->as->cp_was_assumed); |
6de9cd9a DN |
3951 | |
3952 | /* We should always pass assumed size arrays the g77 way. */ | |
b3aefde2 | 3953 | if (sym->attr.dummy) |
d74d8807 | 3954 | gfc_trans_g77_array (sym, block); |
0019d498 | 3955 | break; |
6de9cd9a DN |
3956 | |
3957 | case AS_ASSUMED_SHAPE: | |
3958 | /* Must be a dummy parameter. */ | |
6e45f57b | 3959 | gcc_assert (sym->attr.dummy); |
6de9cd9a | 3960 | |
d74d8807 | 3961 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
6de9cd9a DN |
3962 | break; |
3963 | ||
c62c6622 | 3964 | case AS_ASSUMED_RANK: |
6de9cd9a | 3965 | case AS_DEFERRED: |
7114edca | 3966 | seen_trans_deferred_array = true; |
d74d8807 | 3967 | gfc_trans_deferred_array (sym, block); |
6de9cd9a DN |
3968 | break; |
3969 | ||
3970 | default: | |
6e45f57b | 3971 | gcc_unreachable (); |
6de9cd9a | 3972 | } |
ea8b72e6 | 3973 | if (alloc_comp_or_fini && !seen_trans_deferred_array) |
d74d8807 | 3974 | gfc_trans_deferred_array (sym, block); |
6de9cd9a | 3975 | } |
c49ea23d PT |
3976 | else if ((!sym->attr.dummy || sym->ts.deferred) |
3977 | && (sym->ts.type == BT_CLASS | |
102344e2 | 3978 | && CLASS_DATA (sym)->attr.class_pointer)) |
1b26c26b | 3979 | continue; |
8d51f26f | 3980 | else if ((!sym->attr.dummy || sym->ts.deferred) |
25cbe58f TB |
3981 | && (sym->attr.allocatable |
3982 | || (sym->ts.type == BT_CLASS | |
3983 | && CLASS_DATA (sym)->attr.allocatable))) | |
1517fd57 | 3984 | { |
36085529 | 3985 | if (!sym->attr.save && gfc_option.flag_max_stack_var_size != 0) |
64b33a7e | 3986 | { |
5d81ddd0 TB |
3987 | tree descriptor = NULL_TREE; |
3988 | ||
64b33a7e TB |
3989 | /* Nullify and automatic deallocation of allocatable |
3990 | scalars. */ | |
64b33a7e TB |
3991 | e = gfc_lval_expr_from_sym (sym); |
3992 | if (sym->ts.type == BT_CLASS) | |
b04533af | 3993 | gfc_add_data_component (e); |
64b33a7e TB |
3994 | |
3995 | gfc_init_se (&se, NULL); | |
c49ea23d PT |
3996 | if (sym->ts.type != BT_CLASS |
3997 | || sym->ts.u.derived->attr.dimension | |
3998 | || sym->ts.u.derived->attr.codimension) | |
3999 | { | |
4000 | se.want_pointer = 1; | |
4001 | gfc_conv_expr (&se, e); | |
4002 | } | |
4003 | else if (sym->ts.type == BT_CLASS | |
4004 | && !CLASS_DATA (sym)->attr.dimension | |
4005 | && !CLASS_DATA (sym)->attr.codimension) | |
4006 | { | |
4007 | se.want_pointer = 1; | |
4008 | gfc_conv_expr (&se, e); | |
4009 | } | |
4010 | else | |
4011 | { | |
4012 | gfc_conv_expr (&se, e); | |
5d81ddd0 | 4013 | descriptor = se.expr; |
c49ea23d PT |
4014 | se.expr = gfc_conv_descriptor_data_addr (se.expr); |
4015 | se.expr = build_fold_indirect_ref_loc (input_location, se.expr); | |
4016 | } | |
64b33a7e TB |
4017 | gfc_free_expr (e); |
4018 | ||
ceccaacf TB |
4019 | gfc_save_backend_locus (&loc); |
4020 | gfc_set_backend_locus (&sym->declared_at); | |
0019d498 | 4021 | gfc_start_block (&init); |
8d51f26f PT |
4022 | |
4023 | if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
4024 | { | |
4025 | /* Nullify when entering the scope. */ | |
48f316ea TB |
4026 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
4027 | TREE_TYPE (se.expr), se.expr, | |
4028 | fold_convert (TREE_TYPE (se.expr), | |
4029 | null_pointer_node)); | |
4030 | if (sym->attr.optional) | |
4031 | { | |
4032 | tree present = gfc_conv_expr_present (sym); | |
4033 | tmp = build3_loc (input_location, COND_EXPR, | |
4034 | void_type_node, present, tmp, | |
4035 | build_empty_stmt (input_location)); | |
4036 | } | |
4037 | gfc_add_expr_to_block (&init, tmp); | |
8d51f26f PT |
4038 | } |
4039 | ||
48f316ea | 4040 | if ((sym->attr.dummy || sym->attr.result) |
8d51f26f PT |
4041 | && sym->ts.type == BT_CHARACTER |
4042 | && sym->ts.deferred) | |
4043 | { | |
4044 | /* Character length passed by reference. */ | |
4045 | tmp = sym->ts.u.cl->passed_length; | |
4046 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
4047 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
4048 | ||
4049 | if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
4050 | /* Zero the string length when entering the scope. */ | |
4051 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, | |
4052 | build_int_cst (gfc_charlen_type_node, 0)); | |
4053 | else | |
48f316ea TB |
4054 | { |
4055 | tree tmp2; | |
4056 | ||
4057 | tmp2 = fold_build2_loc (input_location, MODIFY_EXPR, | |
4058 | gfc_charlen_type_node, | |
4059 | sym->ts.u.cl->backend_decl, tmp); | |
4060 | if (sym->attr.optional) | |
4061 | { | |
4062 | tree present = gfc_conv_expr_present (sym); | |
4063 | tmp2 = build3_loc (input_location, COND_EXPR, | |
4064 | void_type_node, present, tmp2, | |
4065 | build_empty_stmt (input_location)); | |
4066 | } | |
4067 | gfc_add_expr_to_block (&init, tmp2); | |
4068 | } | |
8d51f26f | 4069 | |
ceccaacf TB |
4070 | gfc_restore_backend_locus (&loc); |
4071 | ||
8d51f26f PT |
4072 | /* Pass the final character length back. */ |
4073 | if (sym->attr.intent != INTENT_IN) | |
48f316ea TB |
4074 | { |
4075 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
4076 | gfc_charlen_type_node, tmp, | |
4077 | sym->ts.u.cl->backend_decl); | |
4078 | if (sym->attr.optional) | |
4079 | { | |
4080 | tree present = gfc_conv_expr_present (sym); | |
4081 | tmp = build3_loc (input_location, COND_EXPR, | |
4082 | void_type_node, present, tmp, | |
4083 | build_empty_stmt (input_location)); | |
4084 | } | |
4085 | } | |
8d51f26f PT |
4086 | else |
4087 | tmp = NULL_TREE; | |
4088 | } | |
ceccaacf TB |
4089 | else |
4090 | gfc_restore_backend_locus (&loc); | |
64b33a7e TB |
4091 | |
4092 | /* Deallocate when leaving the scope. Nullifying is not | |
4093 | needed. */ | |
ef292537 TB |
4094 | if (!sym->attr.result && !sym->attr.dummy |
4095 | && !sym->ns->proc_name->attr.is_main_program) | |
5d81ddd0 TB |
4096 | { |
4097 | if (sym->ts.type == BT_CLASS | |
4098 | && CLASS_DATA (sym)->attr.codimension) | |
4099 | tmp = gfc_deallocate_with_status (descriptor, NULL_TREE, | |
4100 | NULL_TREE, NULL_TREE, | |
4101 | NULL_TREE, true, NULL, | |
4102 | true); | |
4103 | else | |
76c1a7ec TB |
4104 | { |
4105 | gfc_expr *expr = gfc_lval_expr_from_sym (sym); | |
4106 | tmp = gfc_deallocate_scalar_with_status (se.expr, NULL_TREE, | |
4107 | true, expr, sym->ts); | |
4108 | gfc_free_expr (expr); | |
4109 | } | |
5d81ddd0 | 4110 | } |
8c077737 JW |
4111 | if (sym->ts.type == BT_CLASS) |
4112 | { | |
4113 | /* Initialize _vptr to declared type. */ | |
8b704316 | 4114 | gfc_symbol *vtab; |
8c077737 | 4115 | tree rhs; |
ceccaacf TB |
4116 | |
4117 | gfc_save_backend_locus (&loc); | |
4118 | gfc_set_backend_locus (&sym->declared_at); | |
8c077737 JW |
4119 | e = gfc_lval_expr_from_sym (sym); |
4120 | gfc_add_vptr_component (e); | |
4121 | gfc_init_se (&se, NULL); | |
4122 | se.want_pointer = 1; | |
4123 | gfc_conv_expr (&se, e); | |
4124 | gfc_free_expr (e); | |
8b704316 PT |
4125 | if (UNLIMITED_POLY (sym)) |
4126 | rhs = build_int_cst (TREE_TYPE (se.expr), 0); | |
4127 | else | |
4128 | { | |
4129 | vtab = gfc_find_derived_vtab (sym->ts.u.derived); | |
4130 | rhs = gfc_build_addr_expr (TREE_TYPE (se.expr), | |
4131 | gfc_get_symbol_decl (vtab)); | |
4132 | } | |
8c077737 | 4133 | gfc_add_modify (&init, se.expr, rhs); |
ceccaacf | 4134 | gfc_restore_backend_locus (&loc); |
8c077737 JW |
4135 | } |
4136 | ||
d74d8807 | 4137 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); |
64b33a7e | 4138 | } |
1517fd57 | 4139 | } |
8d51f26f PT |
4140 | else if (sym->ts.type == BT_CHARACTER && sym->ts.deferred) |
4141 | { | |
4142 | tree tmp = NULL; | |
4143 | stmtblock_t init; | |
4144 | ||
4145 | /* If we get to here, all that should be left are pointers. */ | |
4146 | gcc_assert (sym->attr.pointer); | |
4147 | ||
4148 | if (sym->attr.dummy) | |
4149 | { | |
4150 | gfc_start_block (&init); | |
4151 | ||
4152 | /* Character length passed by reference. */ | |
4153 | tmp = sym->ts.u.cl->passed_length; | |
4154 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
4155 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
4156 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, tmp); | |
4157 | /* Pass the final character length back. */ | |
4158 | if (sym->attr.intent != INTENT_IN) | |
4159 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
4160 | gfc_charlen_type_node, tmp, | |
4161 | sym->ts.u.cl->backend_decl); | |
4162 | else | |
4163 | tmp = NULL_TREE; | |
4164 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
4165 | } | |
4166 | } | |
e69afb29 SK |
4167 | else if (sym->ts.deferred) |
4168 | gfc_fatal_error ("Deferred type parameter not yet supported"); | |
ea8b72e6 | 4169 | else if (alloc_comp_or_fini) |
d74d8807 | 4170 | gfc_trans_deferred_array (sym, block); |
6de9cd9a DN |
4171 | else if (sym->ts.type == BT_CHARACTER) |
4172 | { | |
363aab21 | 4173 | gfc_save_backend_locus (&loc); |
6de9cd9a DN |
4174 | gfc_set_backend_locus (&sym->declared_at); |
4175 | if (sym->attr.dummy || sym->attr.result) | |
d74d8807 | 4176 | gfc_trans_dummy_character (sym, sym->ts.u.cl, block); |
6de9cd9a | 4177 | else |
d74d8807 | 4178 | gfc_trans_auto_character_variable (sym, block); |
363aab21 | 4179 | gfc_restore_backend_locus (&loc); |
6de9cd9a | 4180 | } |
910450c1 FW |
4181 | else if (sym->attr.assign) |
4182 | { | |
363aab21 | 4183 | gfc_save_backend_locus (&loc); |
910450c1 | 4184 | gfc_set_backend_locus (&sym->declared_at); |
d74d8807 | 4185 | gfc_trans_assign_aux_var (sym, block); |
363aab21 | 4186 | gfc_restore_backend_locus (&loc); |
910450c1 | 4187 | } |
b7b184a8 PT |
4188 | else if (sym->ts.type == BT_DERIVED |
4189 | && sym->value | |
4190 | && !sym->attr.data | |
4191 | && sym->attr.save == SAVE_NONE) | |
0019d498 DK |
4192 | { |
4193 | gfc_start_block (&tmpblock); | |
4194 | gfc_init_default_dt (sym, &tmpblock, false); | |
d74d8807 | 4195 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), |
0019d498 DK |
4196 | NULL_TREE); |
4197 | } | |
8b704316 | 4198 | else if (!(UNLIMITED_POLY(sym))) |
6e45f57b | 4199 | gcc_unreachable (); |
6de9cd9a DN |
4200 | } |
4201 | ||
0019d498 | 4202 | gfc_init_block (&tmpblock); |
417ab240 | 4203 | |
4cbc9039 | 4204 | for (f = gfc_sym_get_dummy_args (proc_sym); f; f = f->next) |
08113c73 PT |
4205 | { |
4206 | if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER) | |
4207 | { | |
bc21d315 JW |
4208 | gcc_assert (f->sym->ts.u.cl->backend_decl != NULL); |
4209 | if (TREE_CODE (f->sym->ts.u.cl->backend_decl) == PARM_DECL) | |
0019d498 | 4210 | gfc_trans_vla_type_sizes (f->sym, &tmpblock); |
08113c73 | 4211 | } |
08113c73 | 4212 | } |
417ab240 JJ |
4213 | |
4214 | if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER | |
4215 | && current_fake_result_decl != NULL) | |
4216 | { | |
bc21d315 JW |
4217 | gcc_assert (proc_sym->ts.u.cl->backend_decl != NULL); |
4218 | if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == PARM_DECL) | |
0019d498 | 4219 | gfc_trans_vla_type_sizes (proc_sym, &tmpblock); |
417ab240 JJ |
4220 | } |
4221 | ||
d74d8807 | 4222 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), NULL_TREE); |
6de9cd9a DN |
4223 | } |
4224 | ||
a64f5186 JJ |
4225 | static GTY ((param_is (struct module_htab_entry))) htab_t module_htab; |
4226 | ||
4227 | /* Hash and equality functions for module_htab. */ | |
4228 | ||
4229 | static hashval_t | |
4230 | module_htab_do_hash (const void *x) | |
4231 | { | |
4232 | return htab_hash_string (((const struct module_htab_entry *)x)->name); | |
4233 | } | |
4234 | ||
4235 | static int | |
4236 | module_htab_eq (const void *x1, const void *x2) | |
4237 | { | |
4238 | return strcmp ((((const struct module_htab_entry *)x1)->name), | |
4239 | (const char *)x2) == 0; | |
4240 | } | |
4241 | ||
4242 | /* Hash and equality functions for module_htab's decls. */ | |
4243 | ||
4244 | static hashval_t | |
4245 | module_htab_decls_hash (const void *x) | |
4246 | { | |
4247 | const_tree t = (const_tree) x; | |
4248 | const_tree n = DECL_NAME (t); | |
4249 | if (n == NULL_TREE) | |
4250 | n = TYPE_NAME (TREE_TYPE (t)); | |
afdda4b4 | 4251 | return htab_hash_string (IDENTIFIER_POINTER (n)); |
a64f5186 JJ |
4252 | } |
4253 | ||
4254 | static int | |
4255 | module_htab_decls_eq (const void *x1, const void *x2) | |
4256 | { | |
4257 | const_tree t1 = (const_tree) x1; | |
4258 | const_tree n1 = DECL_NAME (t1); | |
4259 | if (n1 == NULL_TREE) | |
4260 | n1 = TYPE_NAME (TREE_TYPE (t1)); | |
4261 | return strcmp (IDENTIFIER_POINTER (n1), (const char *) x2) == 0; | |
4262 | } | |
4263 | ||
4264 | struct module_htab_entry * | |
4265 | gfc_find_module (const char *name) | |
4266 | { | |
4267 | void **slot; | |
4268 | ||
4269 | if (! module_htab) | |
4270 | module_htab = htab_create_ggc (10, module_htab_do_hash, | |
4271 | module_htab_eq, NULL); | |
4272 | ||
4273 | slot = htab_find_slot_with_hash (module_htab, name, | |
4274 | htab_hash_string (name), INSERT); | |
4275 | if (*slot == NULL) | |
4276 | { | |
766090c2 | 4277 | module_htab_entry *entry = ggc_cleared_alloc<module_htab_entry> (); |
a64f5186 JJ |
4278 | |
4279 | entry->name = gfc_get_string (name); | |
4280 | entry->decls = htab_create_ggc (10, module_htab_decls_hash, | |
4281 | module_htab_decls_eq, NULL); | |
4282 | *slot = (void *) entry; | |
4283 | } | |
4284 | return (struct module_htab_entry *) *slot; | |
4285 | } | |
4286 | ||
4287 | void | |
4288 | gfc_module_add_decl (struct module_htab_entry *entry, tree decl) | |
4289 | { | |
4290 | void **slot; | |
4291 | const char *name; | |
4292 | ||
4293 | if (DECL_NAME (decl)) | |
4294 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
4295 | else | |
4296 | { | |
4297 | gcc_assert (TREE_CODE (decl) == TYPE_DECL); | |
4298 | name = IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))); | |
4299 | } | |
4300 | slot = htab_find_slot_with_hash (entry->decls, name, | |
4301 | htab_hash_string (name), INSERT); | |
4302 | if (*slot == NULL) | |
4303 | *slot = (void *) decl; | |
4304 | } | |
4305 | ||
4306 | static struct module_htab_entry *cur_module; | |
6de9cd9a | 4307 | |
5f673c6a TB |
4308 | |
4309 | /* Generate debugging symbols for namelists. This function must come after | |
4310 | generate_local_decl to ensure that the variables in the namelist are | |
4311 | already declared. */ | |
4312 | ||
4313 | static tree | |
4314 | generate_namelist_decl (gfc_symbol * sym) | |
4315 | { | |
4316 | gfc_namelist *nml; | |
4317 | tree decl; | |
4318 | vec<constructor_elt, va_gc> *nml_decls = NULL; | |
4319 | ||
4320 | gcc_assert (sym->attr.flavor == FL_NAMELIST); | |
4321 | for (nml = sym->namelist; nml; nml = nml->next) | |
4322 | { | |
4323 | if (nml->sym->backend_decl == NULL_TREE) | |
4324 | { | |
4325 | nml->sym->attr.referenced = 1; | |
4326 | nml->sym->backend_decl = gfc_get_symbol_decl (nml->sym); | |
4327 | } | |
96d91784 | 4328 | DECL_IGNORED_P (nml->sym->backend_decl) = 0; |
5f673c6a TB |
4329 | CONSTRUCTOR_APPEND_ELT (nml_decls, NULL_TREE, nml->sym->backend_decl); |
4330 | } | |
4331 | ||
4332 | decl = make_node (NAMELIST_DECL); | |
4333 | TREE_TYPE (decl) = void_type_node; | |
4334 | NAMELIST_DECL_ASSOCIATED_DECL (decl) = build_constructor (NULL_TREE, nml_decls); | |
4335 | DECL_NAME (decl) = get_identifier (sym->name); | |
4336 | return decl; | |
4337 | } | |
4338 | ||
4339 | ||
6de9cd9a DN |
4340 | /* Output an initialized decl for a module variable. */ |
4341 | ||
4342 | static void | |
4343 | gfc_create_module_variable (gfc_symbol * sym) | |
4344 | { | |
4345 | tree decl; | |
6de9cd9a | 4346 | |
1a492601 PT |
4347 | /* Module functions with alternate entries are dealt with later and |
4348 | would get caught by the next condition. */ | |
4349 | if (sym->attr.entry) | |
4350 | return; | |
4351 | ||
a8b3b0b6 CR |
4352 | /* Make sure we convert the types of the derived types from iso_c_binding |
4353 | into (void *). */ | |
4354 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
4355 | && sym->ts.type == BT_DERIVED) | |
4356 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
4357 | ||
a64f5186 JJ |
4358 | if (sym->attr.flavor == FL_DERIVED |
4359 | && sym->backend_decl | |
4360 | && TREE_CODE (sym->backend_decl) == RECORD_TYPE) | |
4361 | { | |
4362 | decl = sym->backend_decl; | |
4363 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
b8849663 | 4364 | |
9fa52231 | 4365 | if (!sym->attr.use_assoc) |
b8849663 PT |
4366 | { |
4367 | gcc_assert (TYPE_CONTEXT (decl) == NULL_TREE | |
4368 | || TYPE_CONTEXT (decl) == sym->ns->proc_name->backend_decl); | |
4369 | gcc_assert (DECL_CONTEXT (TYPE_STUB_DECL (decl)) == NULL_TREE | |
4370 | || DECL_CONTEXT (TYPE_STUB_DECL (decl)) | |
4371 | == sym->ns->proc_name->backend_decl); | |
4372 | } | |
a64f5186 JJ |
4373 | TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl; |
4374 | DECL_CONTEXT (TYPE_STUB_DECL (decl)) = sym->ns->proc_name->backend_decl; | |
4375 | gfc_module_add_decl (cur_module, TYPE_STUB_DECL (decl)); | |
4376 | } | |
4377 | ||
6e0d2de7 JW |
4378 | /* Only output variables, procedure pointers and array valued, |
4379 | or derived type, parameters. */ | |
6de9cd9a | 4380 | if (sym->attr.flavor != FL_VARIABLE |
fdc55763 | 4381 | && !(sym->attr.flavor == FL_PARAMETER |
6e0d2de7 JW |
4382 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) |
4383 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.proc_pointer)) | |
6de9cd9a DN |
4384 | return; |
4385 | ||
a64f5186 JJ |
4386 | if ((sym->attr.in_common || sym->attr.in_equivalence) && sym->backend_decl) |
4387 | { | |
4388 | decl = sym->backend_decl; | |
e5b16755 | 4389 | gcc_assert (DECL_FILE_SCOPE_P (decl)); |
a64f5186 JJ |
4390 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); |
4391 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4392 | gfc_module_add_decl (cur_module, decl); | |
4393 | } | |
4394 | ||
9cbf8b41 | 4395 | /* Don't generate variables from other modules. Variables from |
f84c6bd9 FXC |
4396 | COMMONs and Cray pointees will already have been generated. */ |
4397 | if (sym->attr.use_assoc || sym->attr.in_common || sym->attr.cray_pointee) | |
6de9cd9a DN |
4398 | return; |
4399 | ||
30aabb86 | 4400 | /* Equivalenced variables arrive here after creation. */ |
b95605fb | 4401 | if (sym->backend_decl |
a64f5186 JJ |
4402 | && (sym->equiv_built || sym->attr.in_equivalence)) |
4403 | return; | |
30aabb86 | 4404 | |
80f95228 | 4405 | if (sym->backend_decl && !sym->attr.vtab && !sym->attr.target) |
6de9cd9a DN |
4406 | internal_error ("backend decl for module variable %s already exists", |
4407 | sym->name); | |
4408 | ||
38945cfe TK |
4409 | if (sym->module && !sym->attr.result && !sym->attr.dummy |
4410 | && (sym->attr.access == ACCESS_UNKNOWN | |
4411 | && (sym->ns->default_access == ACCESS_PRIVATE | |
4412 | || (sym->ns->default_access == ACCESS_UNKNOWN | |
4413 | && gfc_option.flag_module_private)))) | |
4414 | sym->attr.access = ACCESS_PRIVATE; | |
4415 | ||
4416 | if (warn_unused_variable && !sym->attr.referenced | |
4417 | && sym->attr.access == ACCESS_PRIVATE) | |
4418 | gfc_warning ("Unused PRIVATE module variable '%s' declared at %L", | |
4419 | sym->name, &sym->declared_at); | |
4420 | ||
6de9cd9a DN |
4421 | /* We always want module variables to be created. */ |
4422 | sym->attr.referenced = 1; | |
4423 | /* Create the decl. */ | |
4424 | decl = gfc_get_symbol_decl (sym); | |
4425 | ||
6de9cd9a DN |
4426 | /* Create the variable. */ |
4427 | pushdecl (decl); | |
a64f5186 JJ |
4428 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); |
4429 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
0e6df31e | 4430 | rest_of_decl_compilation (decl, 1, 0); |
a64f5186 | 4431 | gfc_module_add_decl (cur_module, decl); |
6de9cd9a DN |
4432 | |
4433 | /* Also add length of strings. */ | |
4434 | if (sym->ts.type == BT_CHARACTER) | |
4435 | { | |
4436 | tree length; | |
4437 | ||
bc21d315 | 4438 | length = sym->ts.u.cl->backend_decl; |
9c4174d8 PT |
4439 | gcc_assert (length || sym->attr.proc_pointer); |
4440 | if (length && !INTEGER_CST_P (length)) | |
6de9cd9a DN |
4441 | { |
4442 | pushdecl (length); | |
0e6df31e | 4443 | rest_of_decl_compilation (length, 1, 0); |
6de9cd9a DN |
4444 | } |
4445 | } | |
b8ff4e88 TB |
4446 | |
4447 | if (sym->attr.codimension && !sym->attr.dummy && !sym->attr.allocatable | |
4448 | && sym->attr.referenced && !sym->attr.use_assoc) | |
4449 | has_coarray_vars = true; | |
6de9cd9a DN |
4450 | } |
4451 | ||
9268ba9a | 4452 | /* Emit debug information for USE statements. */ |
a64f5186 JJ |
4453 | |
4454 | static void | |
4455 | gfc_trans_use_stmts (gfc_namespace * ns) | |
4456 | { | |
4457 | gfc_use_list *use_stmt; | |
4458 | for (use_stmt = ns->use_stmts; use_stmt; use_stmt = use_stmt->next) | |
4459 | { | |
4460 | struct module_htab_entry *entry | |
4461 | = gfc_find_module (use_stmt->module_name); | |
4462 | gfc_use_rename *rent; | |
4463 | ||
4464 | if (entry->namespace_decl == NULL) | |
4465 | { | |
4466 | entry->namespace_decl | |
c2255bc4 AH |
4467 | = build_decl (input_location, |
4468 | NAMESPACE_DECL, | |
a64f5186 JJ |
4469 | get_identifier (use_stmt->module_name), |
4470 | void_type_node); | |
4471 | DECL_EXTERNAL (entry->namespace_decl) = 1; | |
4472 | } | |
9268ba9a | 4473 | gfc_set_backend_locus (&use_stmt->where); |
a64f5186 JJ |
4474 | if (!use_stmt->only_flag) |
4475 | (*debug_hooks->imported_module_or_decl) (entry->namespace_decl, | |
4476 | NULL_TREE, | |
4477 | ns->proc_name->backend_decl, | |
4478 | false); | |
4479 | for (rent = use_stmt->rename; rent; rent = rent->next) | |
4480 | { | |
4481 | tree decl, local_name; | |
4482 | void **slot; | |
4483 | ||
4484 | if (rent->op != INTRINSIC_NONE) | |
4485 | continue; | |
4486 | ||
4487 | slot = htab_find_slot_with_hash (entry->decls, rent->use_name, | |
4488 | htab_hash_string (rent->use_name), | |
4489 | INSERT); | |
4490 | if (*slot == NULL) | |
4491 | { | |
4492 | gfc_symtree *st; | |
4493 | ||
4494 | st = gfc_find_symtree (ns->sym_root, | |
4495 | rent->local_name[0] | |
4496 | ? rent->local_name : rent->use_name); | |
c3f34952 TB |
4497 | |
4498 | /* The following can happen if a derived type is renamed. */ | |
4499 | if (!st) | |
4500 | { | |
4501 | char *name; | |
4502 | name = xstrdup (rent->local_name[0] | |
4503 | ? rent->local_name : rent->use_name); | |
4504 | name[0] = (char) TOUPPER ((unsigned char) name[0]); | |
4505 | st = gfc_find_symtree (ns->sym_root, name); | |
4506 | free (name); | |
4507 | gcc_assert (st); | |
4508 | } | |
1151ccc9 PT |
4509 | |
4510 | /* Sometimes, generic interfaces wind up being over-ruled by a | |
4511 | local symbol (see PR41062). */ | |
4512 | if (!st->n.sym->attr.use_assoc) | |
4513 | continue; | |
4514 | ||
9268ba9a JJ |
4515 | if (st->n.sym->backend_decl |
4516 | && DECL_P (st->n.sym->backend_decl) | |
4517 | && st->n.sym->module | |
4518 | && strcmp (st->n.sym->module, use_stmt->module_name) == 0) | |
a64f5186 | 4519 | { |
9268ba9a JJ |
4520 | gcc_assert (DECL_EXTERNAL (entry->namespace_decl) |
4521 | || (TREE_CODE (st->n.sym->backend_decl) | |
4522 | != VAR_DECL)); | |
a64f5186 JJ |
4523 | decl = copy_node (st->n.sym->backend_decl); |
4524 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
4525 | DECL_EXTERNAL (decl) = 1; | |
4526 | DECL_IGNORED_P (decl) = 0; | |
4527 | DECL_INITIAL (decl) = NULL_TREE; | |
4528 | } | |
5f673c6a TB |
4529 | else if (st->n.sym->attr.flavor == FL_NAMELIST |
4530 | && st->n.sym->attr.use_only | |
4531 | && st->n.sym->module | |
4532 | && strcmp (st->n.sym->module, use_stmt->module_name) | |
4533 | == 0) | |
4534 | { | |
4535 | decl = generate_namelist_decl (st->n.sym); | |
4536 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
4537 | DECL_EXTERNAL (decl) = 1; | |
4538 | DECL_IGNORED_P (decl) = 0; | |
4539 | DECL_INITIAL (decl) = NULL_TREE; | |
4540 | } | |
a64f5186 JJ |
4541 | else |
4542 | { | |
4543 | *slot = error_mark_node; | |
4544 | htab_clear_slot (entry->decls, slot); | |
4545 | continue; | |
4546 | } | |
4547 | *slot = decl; | |
4548 | } | |
4549 | decl = (tree) *slot; | |
4550 | if (rent->local_name[0]) | |
4551 | local_name = get_identifier (rent->local_name); | |
4552 | else | |
4553 | local_name = NULL_TREE; | |
9268ba9a | 4554 | gfc_set_backend_locus (&rent->where); |
a64f5186 JJ |
4555 | (*debug_hooks->imported_module_or_decl) (decl, local_name, |
4556 | ns->proc_name->backend_decl, | |
4557 | !use_stmt->only_flag); | |
4558 | } | |
4559 | } | |
6de9cd9a DN |
4560 | } |
4561 | ||
9268ba9a | 4562 | |
bd11e37d JJ |
4563 | /* Return true if expr is a constant initializer that gfc_conv_initializer |
4564 | will handle. */ | |
4565 | ||
4566 | static bool | |
4567 | check_constant_initializer (gfc_expr *expr, gfc_typespec *ts, bool array, | |
4568 | bool pointer) | |
4569 | { | |
4570 | gfc_constructor *c; | |
4571 | gfc_component *cm; | |
4572 | ||
4573 | if (pointer) | |
4574 | return true; | |
4575 | else if (array) | |
4576 | { | |
4577 | if (expr->expr_type == EXPR_CONSTANT || expr->expr_type == EXPR_NULL) | |
4578 | return true; | |
4579 | else if (expr->expr_type == EXPR_STRUCTURE) | |
4580 | return check_constant_initializer (expr, ts, false, false); | |
4581 | else if (expr->expr_type != EXPR_ARRAY) | |
4582 | return false; | |
b7e75771 JD |
4583 | for (c = gfc_constructor_first (expr->value.constructor); |
4584 | c; c = gfc_constructor_next (c)) | |
bd11e37d JJ |
4585 | { |
4586 | if (c->iterator) | |
4587 | return false; | |
4588 | if (c->expr->expr_type == EXPR_STRUCTURE) | |
4589 | { | |
4590 | if (!check_constant_initializer (c->expr, ts, false, false)) | |
4591 | return false; | |
4592 | } | |
4593 | else if (c->expr->expr_type != EXPR_CONSTANT) | |
4594 | return false; | |
4595 | } | |
4596 | return true; | |
4597 | } | |
4598 | else switch (ts->type) | |
4599 | { | |
4600 | case BT_DERIVED: | |
4601 | if (expr->expr_type != EXPR_STRUCTURE) | |
4602 | return false; | |
bc21d315 | 4603 | cm = expr->ts.u.derived->components; |
b7e75771 JD |
4604 | for (c = gfc_constructor_first (expr->value.constructor); |
4605 | c; c = gfc_constructor_next (c), cm = cm->next) | |
bd11e37d JJ |
4606 | { |
4607 | if (!c->expr || cm->attr.allocatable) | |
4608 | continue; | |
4609 | if (!check_constant_initializer (c->expr, &cm->ts, | |
4610 | cm->attr.dimension, | |
4611 | cm->attr.pointer)) | |
4612 | return false; | |
4613 | } | |
4614 | return true; | |
4615 | default: | |
4616 | return expr->expr_type == EXPR_CONSTANT; | |
4617 | } | |
4618 | } | |
4619 | ||
4620 | /* Emit debug info for parameters and unreferenced variables with | |
4621 | initializers. */ | |
4622 | ||
4623 | static void | |
4624 | gfc_emit_parameter_debug_info (gfc_symbol *sym) | |
4625 | { | |
4626 | tree decl; | |
4627 | ||
4628 | if (sym->attr.flavor != FL_PARAMETER | |
4629 | && (sym->attr.flavor != FL_VARIABLE || sym->attr.referenced)) | |
4630 | return; | |
4631 | ||
4632 | if (sym->backend_decl != NULL | |
4633 | || sym->value == NULL | |
4634 | || sym->attr.use_assoc | |
4635 | || sym->attr.dummy | |
4636 | || sym->attr.result | |
4637 | || sym->attr.function | |
4638 | || sym->attr.intrinsic | |
4639 | || sym->attr.pointer | |
4640 | || sym->attr.allocatable | |
4641 | || sym->attr.cray_pointee | |
4642 | || sym->attr.threadprivate | |
4643 | || sym->attr.is_bind_c | |
4644 | || sym->attr.subref_array_pointer | |
4645 | || sym->attr.assign) | |
4646 | return; | |
4647 | ||
4648 | if (sym->ts.type == BT_CHARACTER) | |
4649 | { | |
bc21d315 JW |
4650 | gfc_conv_const_charlen (sym->ts.u.cl); |
4651 | if (sym->ts.u.cl->backend_decl == NULL | |
4652 | || TREE_CODE (sym->ts.u.cl->backend_decl) != INTEGER_CST) | |
bd11e37d JJ |
4653 | return; |
4654 | } | |
bc21d315 | 4655 | else if (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
bd11e37d JJ |
4656 | return; |
4657 | ||
4658 | if (sym->as) | |
4659 | { | |
4660 | int n; | |
4661 | ||
4662 | if (sym->as->type != AS_EXPLICIT) | |
4663 | return; | |
4664 | for (n = 0; n < sym->as->rank; n++) | |
4665 | if (sym->as->lower[n]->expr_type != EXPR_CONSTANT | |
4666 | || sym->as->upper[n] == NULL | |
4667 | || sym->as->upper[n]->expr_type != EXPR_CONSTANT) | |
4668 | return; | |
4669 | } | |
4670 | ||
4671 | if (!check_constant_initializer (sym->value, &sym->ts, | |
4672 | sym->attr.dimension, false)) | |
4673 | return; | |
4674 | ||
b8ff4e88 TB |
4675 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && sym->attr.codimension) |
4676 | return; | |
4677 | ||
bd11e37d | 4678 | /* Create the decl for the variable or constant. */ |
c2255bc4 AH |
4679 | decl = build_decl (input_location, |
4680 | sym->attr.flavor == FL_PARAMETER ? CONST_DECL : VAR_DECL, | |
bd11e37d JJ |
4681 | gfc_sym_identifier (sym), gfc_sym_type (sym)); |
4682 | if (sym->attr.flavor == FL_PARAMETER) | |
4683 | TREE_READONLY (decl) = 1; | |
4684 | gfc_set_decl_location (decl, &sym->declared_at); | |
4685 | if (sym->attr.dimension) | |
4686 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
4687 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4688 | TREE_STATIC (decl) = 1; | |
4689 | TREE_USED (decl) = 1; | |
4690 | if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
4691 | TREE_PUBLIC (decl) = 1; | |
1d0134b3 JW |
4692 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
4693 | TREE_TYPE (decl), | |
4694 | sym->attr.dimension, | |
4695 | false, false); | |
9de41e57 | 4696 | debug_hooks->global_decl (decl); |
bd11e37d JJ |
4697 | } |
4698 | ||
b8ff4e88 TB |
4699 | |
4700 | static void | |
4701 | generate_coarray_sym_init (gfc_symbol *sym) | |
4702 | { | |
4703 | tree tmp, size, decl, token; | |
bc0229f9 TB |
4704 | bool is_lock_type; |
4705 | int reg_type; | |
b8ff4e88 TB |
4706 | |
4707 | if (sym->attr.dummy || sym->attr.allocatable || !sym->attr.codimension | |
d7463e5b TB |
4708 | || sym->attr.use_assoc || !sym->attr.referenced |
4709 | || sym->attr.select_type_temporary) | |
b8ff4e88 TB |
4710 | return; |
4711 | ||
4712 | decl = sym->backend_decl; | |
4713 | TREE_USED(decl) = 1; | |
4714 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (decl))); | |
4715 | ||
bc0229f9 TB |
4716 | is_lock_type = sym->ts.type == BT_DERIVED |
4717 | && sym->ts.u.derived->from_intmod == INTMOD_ISO_FORTRAN_ENV | |
4718 | && sym->ts.u.derived->intmod_sym_id == ISOFORTRAN_LOCK_TYPE; | |
4719 | ||
b8ff4e88 TB |
4720 | /* FIXME: Workaround for PR middle-end/49106, cf. also PR middle-end/49108 |
4721 | to make sure the variable is not optimized away. */ | |
4722 | DECL_PRESERVE_P (DECL_CONTEXT (decl)) = 1; | |
4723 | ||
bc0229f9 TB |
4724 | /* For lock types, we pass the array size as only the library knows the |
4725 | size of the variable. */ | |
4726 | if (is_lock_type) | |
4727 | size = gfc_index_one_node; | |
4728 | else | |
4729 | size = TYPE_SIZE_UNIT (gfc_get_element_type (TREE_TYPE (decl))); | |
b8ff4e88 | 4730 | |
8b704316 | 4731 | /* Ensure that we do not have size=0 for zero-sized arrays. */ |
107a9bc9 TB |
4732 | size = fold_build2_loc (input_location, MAX_EXPR, size_type_node, |
4733 | fold_convert (size_type_node, size), | |
4734 | build_int_cst (size_type_node, 1)); | |
4735 | ||
b8ff4e88 TB |
4736 | if (GFC_TYPE_ARRAY_RANK (TREE_TYPE (decl))) |
4737 | { | |
4738 | tmp = GFC_TYPE_ARRAY_SIZE (TREE_TYPE (decl)); | |
4739 | size = fold_build2_loc (input_location, MULT_EXPR, size_type_node, | |
107a9bc9 | 4740 | fold_convert (size_type_node, tmp), size); |
b8ff4e88 TB |
4741 | } |
4742 | ||
4743 | gcc_assert (GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE (decl)) != NULL_TREE); | |
4744 | token = gfc_build_addr_expr (ppvoid_type_node, | |
4745 | GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE(decl))); | |
bc0229f9 TB |
4746 | if (is_lock_type) |
4747 | reg_type = sym->attr.artificial ? GFC_CAF_CRITICAL : GFC_CAF_LOCK_STATIC; | |
4748 | else | |
4749 | reg_type = GFC_CAF_COARRAY_STATIC; | |
b8ff4e88 | 4750 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_register, 6, size, |
bc0229f9 | 4751 | build_int_cst (integer_type_node, reg_type), |
b8ff4e88 TB |
4752 | token, null_pointer_node, /* token, stat. */ |
4753 | null_pointer_node, /* errgmsg, errmsg_len. */ | |
4754 | build_int_cst (integer_type_node, 0)); | |
b8ff4e88 TB |
4755 | gfc_add_modify (&caf_init_block, decl, fold_convert (TREE_TYPE (decl), tmp)); |
4756 | ||
b8ff4e88 TB |
4757 | /* Handle "static" initializer. */ |
4758 | if (sym->value) | |
4759 | { | |
4760 | sym->attr.pointer = 1; | |
4761 | tmp = gfc_trans_assignment (gfc_lval_expr_from_sym (sym), sym->value, | |
4762 | true, false); | |
4763 | sym->attr.pointer = 0; | |
4764 | gfc_add_expr_to_block (&caf_init_block, tmp); | |
4765 | } | |
4766 | } | |
4767 | ||
4768 | ||
4769 | /* Generate constructor function to initialize static, nonallocatable | |
4770 | coarrays. */ | |
4771 | ||
4772 | static void | |
4773 | generate_coarray_init (gfc_namespace * ns __attribute((unused))) | |
4774 | { | |
4775 | tree fndecl, tmp, decl, save_fn_decl; | |
4776 | ||
4777 | save_fn_decl = current_function_decl; | |
4778 | push_function_context (); | |
4779 | ||
4780 | tmp = build_function_type_list (void_type_node, NULL_TREE); | |
4781 | fndecl = build_decl (input_location, FUNCTION_DECL, | |
4782 | create_tmp_var_name ("_caf_init"), tmp); | |
4783 | ||
4784 | DECL_STATIC_CONSTRUCTOR (fndecl) = 1; | |
4785 | SET_DECL_INIT_PRIORITY (fndecl, DEFAULT_INIT_PRIORITY); | |
4786 | ||
4787 | decl = build_decl (input_location, RESULT_DECL, NULL_TREE, void_type_node); | |
4788 | DECL_ARTIFICIAL (decl) = 1; | |
4789 | DECL_IGNORED_P (decl) = 1; | |
4790 | DECL_CONTEXT (decl) = fndecl; | |
4791 | DECL_RESULT (fndecl) = decl; | |
4792 | ||
4793 | pushdecl (fndecl); | |
4794 | current_function_decl = fndecl; | |
4795 | announce_function (fndecl); | |
4796 | ||
4797 | rest_of_decl_compilation (fndecl, 0, 0); | |
4798 | make_decl_rtl (fndecl); | |
b6b27e98 | 4799 | allocate_struct_function (fndecl, false); |
b8ff4e88 | 4800 | |
87a60f68 | 4801 | pushlevel (); |
b8ff4e88 TB |
4802 | gfc_init_block (&caf_init_block); |
4803 | ||
4804 | gfc_traverse_ns (ns, generate_coarray_sym_init); | |
4805 | ||
4806 | DECL_SAVED_TREE (fndecl) = gfc_finish_block (&caf_init_block); | |
4807 | decl = getdecls (); | |
4808 | ||
87a60f68 | 4809 | poplevel (1, 1); |
b8ff4e88 TB |
4810 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; |
4811 | ||
4812 | DECL_SAVED_TREE (fndecl) | |
4813 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
4814 | DECL_INITIAL (fndecl)); | |
4815 | dump_function (TDI_original, fndecl); | |
4816 | ||
4817 | cfun->function_end_locus = input_location; | |
4818 | set_cfun (NULL); | |
4819 | ||
4820 | if (decl_function_context (fndecl)) | |
d52f5295 | 4821 | (void) cgraph_node::create (fndecl); |
b8ff4e88 | 4822 | else |
3dafb85c | 4823 | cgraph_node::finalize_function (fndecl, true); |
b8ff4e88 TB |
4824 | |
4825 | pop_function_context (); | |
4826 | current_function_decl = save_fn_decl; | |
4827 | } | |
4828 | ||
4829 | ||
5f673c6a TB |
4830 | static void |
4831 | create_module_nml_decl (gfc_symbol *sym) | |
4832 | { | |
4833 | if (sym->attr.flavor == FL_NAMELIST) | |
4834 | { | |
4835 | tree decl = generate_namelist_decl (sym); | |
4836 | pushdecl (decl); | |
4837 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
4838 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4839 | rest_of_decl_compilation (decl, 1, 0); | |
4840 | gfc_module_add_decl (cur_module, decl); | |
4841 | } | |
4842 | } | |
4843 | ||
4844 | ||
9268ba9a JJ |
4845 | /* Generate all the required code for module variables. */ |
4846 | ||
4847 | void | |
4848 | gfc_generate_module_vars (gfc_namespace * ns) | |
4849 | { | |
4850 | module_namespace = ns; | |
4851 | cur_module = gfc_find_module (ns->proc_name->name); | |
4852 | ||
4853 | /* Check if the frontend left the namespace in a reasonable state. */ | |
4854 | gcc_assert (ns->proc_name && !ns->proc_name->tlink); | |
4855 | ||
4856 | /* Generate COMMON blocks. */ | |
4857 | gfc_trans_common (ns); | |
4858 | ||
b8ff4e88 TB |
4859 | has_coarray_vars = false; |
4860 | ||
9268ba9a JJ |
4861 | /* Create decls for all the module variables. */ |
4862 | gfc_traverse_ns (ns, gfc_create_module_variable); | |
5f673c6a | 4863 | gfc_traverse_ns (ns, create_module_nml_decl); |
9268ba9a | 4864 | |
b8ff4e88 TB |
4865 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
4866 | generate_coarray_init (ns); | |
4867 | ||
9268ba9a JJ |
4868 | cur_module = NULL; |
4869 | ||
4870 | gfc_trans_use_stmts (ns); | |
bd11e37d | 4871 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
9268ba9a JJ |
4872 | } |
4873 | ||
4874 | ||
6de9cd9a DN |
4875 | static void |
4876 | gfc_generate_contained_functions (gfc_namespace * parent) | |
4877 | { | |
4878 | gfc_namespace *ns; | |
4879 | ||
4880 | /* We create all the prototypes before generating any code. */ | |
4881 | for (ns = parent->contained; ns; ns = ns->sibling) | |
4882 | { | |
4883 | /* Skip namespaces from used modules. */ | |
4884 | if (ns->parent != parent) | |
4885 | continue; | |
4886 | ||
fb55ca75 | 4887 | gfc_create_function_decl (ns, false); |
6de9cd9a DN |
4888 | } |
4889 | ||
4890 | for (ns = parent->contained; ns; ns = ns->sibling) | |
4891 | { | |
4892 | /* Skip namespaces from used modules. */ | |
4893 | if (ns->parent != parent) | |
4894 | continue; | |
4895 | ||
4896 | gfc_generate_function_code (ns); | |
4897 | } | |
4898 | } | |
4899 | ||
4900 | ||
3e978d30 PT |
4901 | /* Drill down through expressions for the array specification bounds and |
4902 | character length calling generate_local_decl for all those variables | |
4903 | that have not already been declared. */ | |
4904 | ||
4905 | static void | |
4906 | generate_local_decl (gfc_symbol *); | |
4907 | ||
908a2235 | 4908 | /* Traverse expr, marking all EXPR_VARIABLE symbols referenced. */ |
3e978d30 | 4909 | |
908a2235 PT |
4910 | static bool |
4911 | expr_decls (gfc_expr *e, gfc_symbol *sym, | |
4912 | int *f ATTRIBUTE_UNUSED) | |
4913 | { | |
4914 | if (e->expr_type != EXPR_VARIABLE | |
4915 | || sym == e->symtree->n.sym | |
3e978d30 PT |
4916 | || e->symtree->n.sym->mark |
4917 | || e->symtree->n.sym->ns != sym->ns) | |
908a2235 | 4918 | return false; |
3e978d30 | 4919 | |
908a2235 PT |
4920 | generate_local_decl (e->symtree->n.sym); |
4921 | return false; | |
4922 | } | |
3e978d30 | 4923 | |
908a2235 PT |
4924 | static void |
4925 | generate_expr_decls (gfc_symbol *sym, gfc_expr *e) | |
4926 | { | |
4927 | gfc_traverse_expr (e, sym, expr_decls, 0); | |
3e978d30 PT |
4928 | } |
4929 | ||
4930 | ||
66e4ab31 | 4931 | /* Check for dependencies in the character length and array spec. */ |
3e978d30 PT |
4932 | |
4933 | static void | |
4934 | generate_dependency_declarations (gfc_symbol *sym) | |
4935 | { | |
4936 | int i; | |
4937 | ||
4938 | if (sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
4939 | && sym->ts.u.cl |
4940 | && sym->ts.u.cl->length | |
4941 | && sym->ts.u.cl->length->expr_type != EXPR_CONSTANT) | |
4942 | generate_expr_decls (sym, sym->ts.u.cl->length); | |
3e978d30 PT |
4943 | |
4944 | if (sym->as && sym->as->rank) | |
4945 | { | |
4946 | for (i = 0; i < sym->as->rank; i++) | |
4947 | { | |
4948 | generate_expr_decls (sym, sym->as->lower[i]); | |
4949 | generate_expr_decls (sym, sym->as->upper[i]); | |
4950 | } | |
4951 | } | |
4952 | } | |
4953 | ||
4954 | ||
6de9cd9a DN |
4955 | /* Generate decls for all local variables. We do this to ensure correct |
4956 | handling of expressions which only appear in the specification of | |
4957 | other functions. */ | |
4958 | ||
4959 | static void | |
4960 | generate_local_decl (gfc_symbol * sym) | |
4961 | { | |
4962 | if (sym->attr.flavor == FL_VARIABLE) | |
4963 | { | |
b8ff4e88 TB |
4964 | if (sym->attr.codimension && !sym->attr.dummy && !sym->attr.allocatable |
4965 | && sym->attr.referenced && !sym->attr.use_assoc) | |
4966 | has_coarray_vars = true; | |
4967 | ||
3e978d30 | 4968 | if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master) |
2c69d527 | 4969 | generate_dependency_declarations (sym); |
3e978d30 | 4970 | |
6de9cd9a | 4971 | if (sym->attr.referenced) |
2c69d527 | 4972 | gfc_get_symbol_decl (sym); |
4ed44ccc DF |
4973 | |
4974 | /* Warnings for unused dummy arguments. */ | |
c8877f40 | 4975 | else if (sym->attr.dummy && !sym->attr.in_namelist) |
ad6d42e1 | 4976 | { |
4ed44ccc DF |
4977 | /* INTENT(out) dummy arguments are likely meant to be set. */ |
4978 | if (gfc_option.warn_unused_dummy_argument | |
4979 | && sym->attr.intent == INTENT_OUT) | |
4980 | { | |
4981 | if (sym->ts.type != BT_DERIVED) | |
4982 | gfc_warning ("Dummy argument '%s' at %L was declared " | |
4983 | "INTENT(OUT) but was not set", sym->name, | |
4984 | &sym->declared_at); | |
bf7a6c1c JW |
4985 | else if (!gfc_has_default_initializer (sym->ts.u.derived) |
4986 | && !sym->ts.u.derived->attr.zero_comp) | |
4ed44ccc DF |
4987 | gfc_warning ("Derived-type dummy argument '%s' at %L was " |
4988 | "declared INTENT(OUT) but was not set and " | |
4989 | "does not have a default initializer", | |
4990 | sym->name, &sym->declared_at); | |
fba5ace0 TB |
4991 | if (sym->backend_decl != NULL_TREE) |
4992 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4ed44ccc DF |
4993 | } |
4994 | else if (gfc_option.warn_unused_dummy_argument) | |
fba5ace0 TB |
4995 | { |
4996 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, | |
4ed44ccc | 4997 | &sym->declared_at); |
fba5ace0 TB |
4998 | if (sym->backend_decl != NULL_TREE) |
4999 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
5000 | } | |
ad6d42e1 | 5001 | } |
4ed44ccc | 5002 | |
f8d0aee5 | 5003 | /* Warn for unused variables, but not if they're inside a common |
ecdbf2cd | 5004 | block or a namelist. */ |
ce738b86 | 5005 | else if (warn_unused_variable |
ecdbf2cd | 5006 | && !(sym->attr.in_common || sym->mark || sym->attr.in_namelist)) |
fba5ace0 | 5007 | { |
ecdbf2cd JW |
5008 | if (sym->attr.use_only) |
5009 | { | |
5010 | gfc_warning ("Unused module variable '%s' which has been " | |
5011 | "explicitly imported at %L", sym->name, | |
5012 | &sym->declared_at); | |
5013 | if (sym->backend_decl != NULL_TREE) | |
5014 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
5015 | } | |
5016 | else if (!sym->attr.use_assoc) | |
5017 | { | |
5018 | gfc_warning ("Unused variable '%s' declared at %L", | |
5019 | sym->name, &sym->declared_at); | |
5020 | if (sym->backend_decl != NULL_TREE) | |
5021 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
5022 | } | |
fba5ace0 | 5023 | } |
2c69d527 | 5024 | |
417ab240 JJ |
5025 | /* For variable length CHARACTER parameters, the PARM_DECL already |
5026 | references the length variable, so force gfc_get_symbol_decl | |
5027 | even when not referenced. If optimize > 0, it will be optimized | |
5028 | away anyway. But do this only after emitting -Wunused-parameter | |
5029 | warning if requested. */ | |
2c69d527 PT |
5030 | if (sym->attr.dummy && !sym->attr.referenced |
5031 | && sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
5032 | && sym->ts.u.cl->backend_decl != NULL |
5033 | && TREE_CODE (sym->ts.u.cl->backend_decl) == VAR_DECL) | |
417ab240 JJ |
5034 | { |
5035 | sym->attr.referenced = 1; | |
5036 | gfc_get_symbol_decl (sym); | |
5037 | } | |
534fd534 | 5038 | |
5af2eace PT |
5039 | /* INTENT(out) dummy arguments and result variables with allocatable |
5040 | components are reset by default and need to be set referenced to | |
5041 | generate the code for nullification and automatic lengths. */ | |
5042 | if (!sym->attr.referenced | |
2c69d527 | 5043 | && sym->ts.type == BT_DERIVED |
bc21d315 | 5044 | && sym->ts.u.derived->attr.alloc_comp |
758e12af | 5045 | && !sym->attr.pointer |
5af2eace PT |
5046 | && ((sym->attr.dummy && sym->attr.intent == INTENT_OUT) |
5047 | || | |
5048 | (sym->attr.result && sym != sym->result))) | |
2c69d527 PT |
5049 | { |
5050 | sym->attr.referenced = 1; | |
5051 | gfc_get_symbol_decl (sym); | |
5052 | } | |
5053 | ||
06c7153f TB |
5054 | /* Check for dependencies in the array specification and string |
5055 | length, adding the necessary declarations to the function. We | |
5056 | mark the symbol now, as well as in traverse_ns, to prevent | |
5057 | getting stuck in a circular dependency. */ | |
5058 | sym->mark = 1; | |
6de9cd9a | 5059 | } |
33c0c5e9 DF |
5060 | else if (sym->attr.flavor == FL_PARAMETER) |
5061 | { | |
d92693b4 | 5062 | if (warn_unused_parameter |
dbad8e71 TB |
5063 | && !sym->attr.referenced) |
5064 | { | |
5065 | if (!sym->attr.use_assoc) | |
5066 | gfc_warning ("Unused parameter '%s' declared at %L", sym->name, | |
5067 | &sym->declared_at); | |
5068 | else if (sym->attr.use_only) | |
5069 | gfc_warning ("Unused parameter '%s' which has been explicitly " | |
5070 | "imported at %L", sym->name, &sym->declared_at); | |
5071 | } | |
33c0c5e9 | 5072 | } |
766d0c8c DF |
5073 | else if (sym->attr.flavor == FL_PROCEDURE) |
5074 | { | |
5075 | /* TODO: move to the appropriate place in resolve.c. */ | |
5076 | if (warn_return_type | |
5077 | && sym->attr.function | |
5078 | && sym->result | |
5079 | && sym != sym->result | |
5080 | && !sym->result->attr.referenced | |
5081 | && !sym->attr.use_assoc | |
5082 | && sym->attr.if_source != IFSRC_IFBODY) | |
5083 | { | |
5084 | gfc_warning ("Return value '%s' of function '%s' declared at " | |
5085 | "%L not set", sym->result->name, sym->name, | |
5086 | &sym->result->declared_at); | |
5087 | ||
5088 | /* Prevents "Unused variable" warning for RESULT variables. */ | |
06c7153f | 5089 | sym->result->mark = 1; |
766d0c8c DF |
5090 | } |
5091 | } | |
a8b3b0b6 | 5092 | |
8b16d231 CR |
5093 | if (sym->attr.dummy == 1) |
5094 | { | |
5095 | /* Modify the tree type for scalar character dummy arguments of bind(c) | |
5096 | procedures if they are passed by value. The tree type for them will | |
5097 | be promoted to INTEGER_TYPE for the middle end, which appears to be | |
5098 | what C would do with characters passed by-value. The value attribute | |
5099 | implies the dummy is a scalar. */ | |
5100 | if (sym->attr.value == 1 && sym->backend_decl != NULL | |
5101 | && sym->ts.type == BT_CHARACTER && sym->ts.is_c_interop | |
5102 | && sym->ns->proc_name != NULL && sym->ns->proc_name->attr.is_bind_c) | |
e032c2a1 | 5103 | gfc_conv_scalar_char_value (sym, NULL, NULL); |
d20597cb TK |
5104 | |
5105 | /* Unused procedure passed as dummy argument. */ | |
5106 | if (sym->attr.flavor == FL_PROCEDURE) | |
5107 | { | |
5108 | if (!sym->attr.referenced) | |
5109 | { | |
5110 | if (gfc_option.warn_unused_dummy_argument) | |
5111 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, | |
8b704316 | 5112 | &sym->declared_at); |
d20597cb TK |
5113 | } |
5114 | ||
5115 | /* Silence bogus "unused parameter" warnings from the | |
5116 | middle end. */ | |
5117 | if (sym->backend_decl != NULL_TREE) | |
5118 | TREE_NO_WARNING (sym->backend_decl) = 1; | |
5119 | } | |
8b16d231 CR |
5120 | } |
5121 | ||
a8b3b0b6 CR |
5122 | /* Make sure we convert the types of the derived types from iso_c_binding |
5123 | into (void *). */ | |
5124 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
5125 | && sym->ts.type == BT_DERIVED) | |
5126 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
6de9cd9a DN |
5127 | } |
5128 | ||
5f673c6a TB |
5129 | |
5130 | static void | |
5131 | generate_local_nml_decl (gfc_symbol * sym) | |
5132 | { | |
5133 | if (sym->attr.flavor == FL_NAMELIST && !sym->attr.use_assoc) | |
5134 | { | |
5135 | tree decl = generate_namelist_decl (sym); | |
5136 | pushdecl (decl); | |
5137 | } | |
5138 | } | |
5139 | ||
5140 | ||
6de9cd9a DN |
5141 | static void |
5142 | generate_local_vars (gfc_namespace * ns) | |
5143 | { | |
5144 | gfc_traverse_ns (ns, generate_local_decl); | |
5f673c6a | 5145 | gfc_traverse_ns (ns, generate_local_nml_decl); |
6de9cd9a DN |
5146 | } |
5147 | ||
5148 | ||
3d79abbd PB |
5149 | /* Generate a switch statement to jump to the correct entry point. Also |
5150 | creates the label decls for the entry points. */ | |
6de9cd9a | 5151 | |
3d79abbd PB |
5152 | static tree |
5153 | gfc_trans_entry_master_switch (gfc_entry_list * el) | |
6de9cd9a | 5154 | { |
3d79abbd PB |
5155 | stmtblock_t block; |
5156 | tree label; | |
5157 | tree tmp; | |
5158 | tree val; | |
6de9cd9a | 5159 | |
3d79abbd PB |
5160 | gfc_init_block (&block); |
5161 | for (; el; el = el->next) | |
5162 | { | |
5163 | /* Add the case label. */ | |
c006df4e | 5164 | label = gfc_build_label_decl (NULL_TREE); |
7d60be94 | 5165 | val = build_int_cst (gfc_array_index_type, el->id); |
3d528853 | 5166 | tmp = build_case_label (val, NULL_TREE, label); |
3d79abbd | 5167 | gfc_add_expr_to_block (&block, tmp); |
7389bce6 | 5168 | |
3d79abbd PB |
5169 | /* And jump to the actual entry point. */ |
5170 | label = gfc_build_label_decl (NULL_TREE); | |
3d79abbd PB |
5171 | tmp = build1_v (GOTO_EXPR, label); |
5172 | gfc_add_expr_to_block (&block, tmp); | |
5173 | ||
5174 | /* Save the label decl. */ | |
5175 | el->label = label; | |
5176 | } | |
5177 | tmp = gfc_finish_block (&block); | |
5178 | /* The first argument selects the entry point. */ | |
5179 | val = DECL_ARGUMENTS (current_function_decl); | |
0cd2402d SB |
5180 | tmp = fold_build3_loc (input_location, SWITCH_EXPR, NULL_TREE, |
5181 | val, tmp, NULL_TREE); | |
3d79abbd | 5182 | return tmp; |
6de9cd9a DN |
5183 | } |
5184 | ||
44de5aeb | 5185 | |
cadb8f42 DK |
5186 | /* Add code to string lengths of actual arguments passed to a function against |
5187 | the expected lengths of the dummy arguments. */ | |
5188 | ||
5189 | static void | |
5190 | add_argument_checking (stmtblock_t *block, gfc_symbol *sym) | |
5191 | { | |
5192 | gfc_formal_arglist *formal; | |
5193 | ||
4cbc9039 | 5194 | for (formal = gfc_sym_get_dummy_args (sym); formal; formal = formal->next) |
be94c034 | 5195 | if (formal->sym && formal->sym->ts.type == BT_CHARACTER |
9be1227b | 5196 | && !formal->sym->ts.deferred) |
cadb8f42 DK |
5197 | { |
5198 | enum tree_code comparison; | |
5199 | tree cond; | |
5200 | tree argname; | |
5201 | gfc_symbol *fsym; | |
5202 | gfc_charlen *cl; | |
5203 | const char *message; | |
5204 | ||
5205 | fsym = formal->sym; | |
bc21d315 | 5206 | cl = fsym->ts.u.cl; |
cadb8f42 DK |
5207 | |
5208 | gcc_assert (cl); | |
5209 | gcc_assert (cl->passed_length != NULL_TREE); | |
5210 | gcc_assert (cl->backend_decl != NULL_TREE); | |
5211 | ||
5212 | /* For POINTER, ALLOCATABLE and assumed-shape dummy arguments, the | |
5213 | string lengths must match exactly. Otherwise, it is only required | |
cb7a8961 TB |
5214 | that the actual string length is *at least* the expected one. |
5215 | Sequence association allows for a mismatch of the string length | |
5216 | if the actual argument is (part of) an array, but only if the | |
5217 | dummy argument is an array. (See "Sequence association" in | |
5218 | Section 12.4.1.4 for F95 and 12.4.1.5 for F2003.) */ | |
be94c034 | 5219 | if (fsym->attr.pointer || fsym->attr.allocatable |
c62c6622 TB |
5220 | || (fsym->as && (fsym->as->type == AS_ASSUMED_SHAPE |
5221 | || fsym->as->type == AS_ASSUMED_RANK))) | |
cadb8f42 DK |
5222 | { |
5223 | comparison = NE_EXPR; | |
5224 | message = _("Actual string length does not match the declared one" | |
5225 | " for dummy argument '%s' (%ld/%ld)"); | |
5226 | } | |
cb7a8961 TB |
5227 | else if (fsym->as && fsym->as->rank != 0) |
5228 | continue; | |
cadb8f42 DK |
5229 | else |
5230 | { | |
5231 | comparison = LT_EXPR; | |
5232 | message = _("Actual string length is shorter than the declared one" | |
5233 | " for dummy argument '%s' (%ld/%ld)"); | |
5234 | } | |
5235 | ||
5236 | /* Build the condition. For optional arguments, an actual length | |
5237 | of 0 is also acceptable if the associated string is NULL, which | |
5238 | means the argument was not passed. */ | |
bc98ed60 TB |
5239 | cond = fold_build2_loc (input_location, comparison, boolean_type_node, |
5240 | cl->passed_length, cl->backend_decl); | |
cadb8f42 DK |
5241 | if (fsym->attr.optional) |
5242 | { | |
5243 | tree not_absent; | |
5244 | tree not_0length; | |
5245 | tree absent_failed; | |
5246 | ||
bc98ed60 TB |
5247 | not_0length = fold_build2_loc (input_location, NE_EXPR, |
5248 | boolean_type_node, | |
5249 | cl->passed_length, | |
e8160c9a | 5250 | build_zero_cst (gfc_charlen_type_node)); |
702a738b PT |
5251 | /* The symbol needs to be referenced for gfc_get_symbol_decl. */ |
5252 | fsym->attr.referenced = 1; | |
5253 | not_absent = gfc_conv_expr_present (fsym); | |
cadb8f42 | 5254 | |
bc98ed60 TB |
5255 | absent_failed = fold_build2_loc (input_location, TRUTH_OR_EXPR, |
5256 | boolean_type_node, not_0length, | |
5257 | not_absent); | |
cadb8f42 | 5258 | |
bc98ed60 TB |
5259 | cond = fold_build2_loc (input_location, TRUTH_AND_EXPR, |
5260 | boolean_type_node, cond, absent_failed); | |
cadb8f42 DK |
5261 | } |
5262 | ||
5263 | /* Build the runtime check. */ | |
5264 | argname = gfc_build_cstring_const (fsym->name); | |
5265 | argname = gfc_build_addr_expr (pchar_type_node, argname); | |
5266 | gfc_trans_runtime_check (true, false, cond, block, &fsym->declared_at, | |
5267 | message, argname, | |
5268 | fold_convert (long_integer_type_node, | |
5269 | cl->passed_length), | |
5270 | fold_convert (long_integer_type_node, | |
5271 | cl->backend_decl)); | |
5272 | } | |
5273 | } | |
5274 | ||
5275 | ||
092231a8 TB |
5276 | static void |
5277 | create_main_function (tree fndecl) | |
5278 | { | |
86c3c481 | 5279 | tree old_context; |
092231a8 TB |
5280 | tree ftn_main; |
5281 | tree tmp, decl, result_decl, argc, argv, typelist, arglist; | |
5282 | stmtblock_t body; | |
5283 | ||
86c3c481 TB |
5284 | old_context = current_function_decl; |
5285 | ||
5286 | if (old_context) | |
5287 | { | |
5288 | push_function_context (); | |
5289 | saved_parent_function_decls = saved_function_decls; | |
5290 | saved_function_decls = NULL_TREE; | |
5291 | } | |
5292 | ||
092231a8 TB |
5293 | /* main() function must be declared with global scope. */ |
5294 | gcc_assert (current_function_decl == NULL_TREE); | |
5295 | ||
5296 | /* Declare the function. */ | |
5297 | tmp = build_function_type_list (integer_type_node, integer_type_node, | |
5298 | build_pointer_type (pchar_type_node), | |
5299 | NULL_TREE); | |
a7ad6c2d | 5300 | main_identifier_node = get_identifier ("main"); |
c2255bc4 AH |
5301 | ftn_main = build_decl (input_location, FUNCTION_DECL, |
5302 | main_identifier_node, tmp); | |
092231a8 TB |
5303 | DECL_EXTERNAL (ftn_main) = 0; |
5304 | TREE_PUBLIC (ftn_main) = 1; | |
5305 | TREE_STATIC (ftn_main) = 1; | |
5306 | DECL_ATTRIBUTES (ftn_main) | |
5307 | = tree_cons (get_identifier("externally_visible"), NULL_TREE, NULL_TREE); | |
5308 | ||
5309 | /* Setup the result declaration (for "return 0"). */ | |
c2255bc4 AH |
5310 | result_decl = build_decl (input_location, |
5311 | RESULT_DECL, NULL_TREE, integer_type_node); | |
092231a8 TB |
5312 | DECL_ARTIFICIAL (result_decl) = 1; |
5313 | DECL_IGNORED_P (result_decl) = 1; | |
5314 | DECL_CONTEXT (result_decl) = ftn_main; | |
5315 | DECL_RESULT (ftn_main) = result_decl; | |
5316 | ||
5317 | pushdecl (ftn_main); | |
5318 | ||
5319 | /* Get the arguments. */ | |
5320 | ||
5321 | arglist = NULL_TREE; | |
5322 | typelist = TYPE_ARG_TYPES (TREE_TYPE (ftn_main)); | |
5323 | ||
5324 | tmp = TREE_VALUE (typelist); | |
c2255bc4 | 5325 | argc = build_decl (input_location, PARM_DECL, get_identifier ("argc"), tmp); |
092231a8 TB |
5326 | DECL_CONTEXT (argc) = ftn_main; |
5327 | DECL_ARG_TYPE (argc) = TREE_VALUE (typelist); | |
5328 | TREE_READONLY (argc) = 1; | |
5329 | gfc_finish_decl (argc); | |
5330 | arglist = chainon (arglist, argc); | |
5331 | ||
5332 | typelist = TREE_CHAIN (typelist); | |
5333 | tmp = TREE_VALUE (typelist); | |
c2255bc4 | 5334 | argv = build_decl (input_location, PARM_DECL, get_identifier ("argv"), tmp); |
092231a8 TB |
5335 | DECL_CONTEXT (argv) = ftn_main; |
5336 | DECL_ARG_TYPE (argv) = TREE_VALUE (typelist); | |
5337 | TREE_READONLY (argv) = 1; | |
5338 | DECL_BY_REFERENCE (argv) = 1; | |
5339 | gfc_finish_decl (argv); | |
5340 | arglist = chainon (arglist, argv); | |
5341 | ||
5342 | DECL_ARGUMENTS (ftn_main) = arglist; | |
5343 | current_function_decl = ftn_main; | |
5344 | announce_function (ftn_main); | |
5345 | ||
5346 | rest_of_decl_compilation (ftn_main, 1, 0); | |
5347 | make_decl_rtl (ftn_main); | |
b6b27e98 | 5348 | allocate_struct_function (ftn_main, false); |
87a60f68 | 5349 | pushlevel (); |
092231a8 TB |
5350 | |
5351 | gfc_init_block (&body); | |
5352 | ||
5353 | /* Call some libgfortran initialization routines, call then MAIN__(). */ | |
5354 | ||
a8a5f4a9 | 5355 | /* Call _gfortran_caf_init (*argc, ***argv). */ |
60386f50 TB |
5356 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) |
5357 | { | |
5358 | tree pint_type, pppchar_type; | |
5359 | pint_type = build_pointer_type (integer_type_node); | |
5360 | pppchar_type | |
5361 | = build_pointer_type (build_pointer_type (pchar_type_node)); | |
5362 | ||
a8a5f4a9 | 5363 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_init, 2, |
60386f50 | 5364 | gfc_build_addr_expr (pint_type, argc), |
a8a5f4a9 | 5365 | gfc_build_addr_expr (pppchar_type, argv)); |
60386f50 TB |
5366 | gfc_add_expr_to_block (&body, tmp); |
5367 | } | |
5368 | ||
092231a8 | 5369 | /* Call _gfortran_set_args (argc, argv). */ |
86c3c481 TB |
5370 | TREE_USED (argc) = 1; |
5371 | TREE_USED (argv) = 1; | |
db3927fb AH |
5372 | tmp = build_call_expr_loc (input_location, |
5373 | gfor_fndecl_set_args, 2, argc, argv); | |
092231a8 TB |
5374 | gfc_add_expr_to_block (&body, tmp); |
5375 | ||
5376 | /* Add a call to set_options to set up the runtime library Fortran | |
5377 | language standard parameters. */ | |
5378 | { | |
5379 | tree array_type, array, var; | |
9771b263 | 5380 | vec<constructor_elt, va_gc> *v = NULL; |
092231a8 TB |
5381 | |
5382 | /* Passing a new option to the library requires four modifications: | |
5383 | + add it to the tree_cons list below | |
5384 | + change the array size in the call to build_array_type | |
5385 | + change the first argument to the library call | |
5386 | gfor_fndecl_set_options | |
5387 | + modify the library (runtime/compile_options.c)! */ | |
5388 | ||
8748ad99 NF |
5389 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5390 | build_int_cst (integer_type_node, | |
5391 | gfc_option.warn_std)); | |
5392 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5393 | build_int_cst (integer_type_node, | |
5394 | gfc_option.allow_std)); | |
5395 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5396 | build_int_cst (integer_type_node, pedantic)); | |
de8bd142 JB |
5397 | /* TODO: This is the old -fdump-core option, which is unused but |
5398 | passed due to ABI compatibility; remove when bumping the | |
5399 | library ABI. */ | |
8748ad99 NF |
5400 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5401 | build_int_cst (integer_type_node, | |
de8bd142 | 5402 | 0)); |
8748ad99 NF |
5403 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5404 | build_int_cst (integer_type_node, | |
5405 | gfc_option.flag_backtrace)); | |
5406 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5407 | build_int_cst (integer_type_node, | |
5408 | gfc_option.flag_sign_zero)); | |
5409 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5410 | build_int_cst (integer_type_node, | |
5411 | (gfc_option.rtcheck | |
5412 | & GFC_RTCHECK_BOUNDS))); | |
80b91c0b JB |
5413 | /* TODO: This is the -frange-check option, which no longer affects |
5414 | library behavior; when bumping the library ABI this slot can be | |
5415 | reused for something else. As it is the last element in the | |
fa86f4f9 TB |
5416 | array, we can instead leave it out altogether. */ |
5417 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5418 | build_int_cst (integer_type_node, 0)); | |
8748ad99 NF |
5419 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5420 | build_int_cst (integer_type_node, | |
fa86f4f9 | 5421 | gfc_option.fpe_summary)); |
092231a8 TB |
5422 | |
5423 | array_type = build_array_type (integer_type_node, | |
fa86f4f9 | 5424 | build_index_type (size_int (8))); |
8748ad99 | 5425 | array = build_constructor (array_type, v); |
092231a8 TB |
5426 | TREE_CONSTANT (array) = 1; |
5427 | TREE_STATIC (array) = 1; | |
5428 | ||
5429 | /* Create a static variable to hold the jump table. */ | |
059345ce BS |
5430 | var = build_decl (input_location, VAR_DECL, |
5431 | create_tmp_var_name ("options"), | |
5432 | array_type); | |
5433 | DECL_ARTIFICIAL (var) = 1; | |
5434 | DECL_IGNORED_P (var) = 1; | |
092231a8 TB |
5435 | TREE_CONSTANT (var) = 1; |
5436 | TREE_STATIC (var) = 1; | |
5437 | TREE_READONLY (var) = 1; | |
5438 | DECL_INITIAL (var) = array; | |
059345ce | 5439 | pushdecl (var); |
092231a8 TB |
5440 | var = gfc_build_addr_expr (build_pointer_type (integer_type_node), var); |
5441 | ||
db3927fb AH |
5442 | tmp = build_call_expr_loc (input_location, |
5443 | gfor_fndecl_set_options, 2, | |
fa86f4f9 | 5444 | build_int_cst (integer_type_node, 9), var); |
092231a8 TB |
5445 | gfc_add_expr_to_block (&body, tmp); |
5446 | } | |
5447 | ||
5448 | /* If -ffpe-trap option was provided, add a call to set_fpe so that | |
5449 | the library will raise a FPE when needed. */ | |
5450 | if (gfc_option.fpe != 0) | |
5451 | { | |
db3927fb AH |
5452 | tmp = build_call_expr_loc (input_location, |
5453 | gfor_fndecl_set_fpe, 1, | |
092231a8 TB |
5454 | build_int_cst (integer_type_node, |
5455 | gfc_option.fpe)); | |
5456 | gfc_add_expr_to_block (&body, tmp); | |
5457 | } | |
5458 | ||
5459 | /* If this is the main program and an -fconvert option was provided, | |
5460 | add a call to set_convert. */ | |
5461 | ||
5462 | if (gfc_option.convert != GFC_CONVERT_NATIVE) | |
5463 | { | |
db3927fb AH |
5464 | tmp = build_call_expr_loc (input_location, |
5465 | gfor_fndecl_set_convert, 1, | |
092231a8 TB |
5466 | build_int_cst (integer_type_node, |
5467 | gfc_option.convert)); | |
5468 | gfc_add_expr_to_block (&body, tmp); | |
5469 | } | |
5470 | ||
5471 | /* If this is the main program and an -frecord-marker option was provided, | |
5472 | add a call to set_record_marker. */ | |
5473 | ||
5474 | if (gfc_option.record_marker != 0) | |
5475 | { | |
db3927fb AH |
5476 | tmp = build_call_expr_loc (input_location, |
5477 | gfor_fndecl_set_record_marker, 1, | |
092231a8 TB |
5478 | build_int_cst (integer_type_node, |
5479 | gfc_option.record_marker)); | |
5480 | gfc_add_expr_to_block (&body, tmp); | |
5481 | } | |
5482 | ||
5483 | if (gfc_option.max_subrecord_length != 0) | |
5484 | { | |
db3927fb AH |
5485 | tmp = build_call_expr_loc (input_location, |
5486 | gfor_fndecl_set_max_subrecord_length, 1, | |
092231a8 TB |
5487 | build_int_cst (integer_type_node, |
5488 | gfc_option.max_subrecord_length)); | |
5489 | gfc_add_expr_to_block (&body, tmp); | |
5490 | } | |
5491 | ||
5492 | /* Call MAIN__(). */ | |
db3927fb AH |
5493 | tmp = build_call_expr_loc (input_location, |
5494 | fndecl, 0); | |
092231a8 TB |
5495 | gfc_add_expr_to_block (&body, tmp); |
5496 | ||
86c3c481 TB |
5497 | /* Mark MAIN__ as used. */ |
5498 | TREE_USED (fndecl) = 1; | |
5499 | ||
60386f50 TB |
5500 | /* Coarray: Call _gfortran_caf_finalize(void). */ |
5501 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
8b704316 | 5502 | { |
60386f50 | 5503 | /* Per F2008, 8.5.1 END of the main program implies a |
8b704316 | 5504 | SYNC MEMORY. */ |
e79983f4 | 5505 | tmp = builtin_decl_explicit (BUILT_IN_SYNC_SYNCHRONIZE); |
60386f50 TB |
5506 | tmp = build_call_expr_loc (input_location, tmp, 0); |
5507 | gfc_add_expr_to_block (&body, tmp); | |
5508 | ||
5509 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_finalize, 0); | |
5510 | gfc_add_expr_to_block (&body, tmp); | |
5511 | } | |
5512 | ||
092231a8 | 5513 | /* "return 0". */ |
bc98ed60 TB |
5514 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, integer_type_node, |
5515 | DECL_RESULT (ftn_main), | |
5516 | build_int_cst (integer_type_node, 0)); | |
092231a8 TB |
5517 | tmp = build1_v (RETURN_EXPR, tmp); |
5518 | gfc_add_expr_to_block (&body, tmp); | |
5519 | ||
5520 | ||
5521 | DECL_SAVED_TREE (ftn_main) = gfc_finish_block (&body); | |
5522 | decl = getdecls (); | |
5523 | ||
5524 | /* Finish off this function and send it for code generation. */ | |
87a60f68 | 5525 | poplevel (1, 1); |
092231a8 TB |
5526 | BLOCK_SUPERCONTEXT (DECL_INITIAL (ftn_main)) = ftn_main; |
5527 | ||
5528 | DECL_SAVED_TREE (ftn_main) | |
5529 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (ftn_main), | |
5530 | DECL_INITIAL (ftn_main)); | |
5531 | ||
5532 | /* Output the GENERIC tree. */ | |
5533 | dump_function (TDI_original, ftn_main); | |
5534 | ||
3dafb85c | 5535 | cgraph_node::finalize_function (ftn_main, true); |
86c3c481 TB |
5536 | |
5537 | if (old_context) | |
5538 | { | |
5539 | pop_function_context (); | |
5540 | saved_function_decls = saved_parent_function_decls; | |
5541 | } | |
5542 | current_function_decl = old_context; | |
092231a8 TB |
5543 | } |
5544 | ||
5545 | ||
d74d8807 DK |
5546 | /* Get the result expression for a procedure. */ |
5547 | ||
5548 | static tree | |
5549 | get_proc_result (gfc_symbol* sym) | |
5550 | { | |
5551 | if (sym->attr.subroutine || sym == sym->result) | |
5552 | { | |
5553 | if (current_fake_result_decl != NULL) | |
5554 | return TREE_VALUE (current_fake_result_decl); | |
5555 | ||
5556 | return NULL_TREE; | |
5557 | } | |
5558 | ||
5559 | return sym->result->backend_decl; | |
5560 | } | |
5561 | ||
5562 | ||
5563 | /* Generate an appropriate return-statement for a procedure. */ | |
5564 | ||
5565 | tree | |
5566 | gfc_generate_return (void) | |
5567 | { | |
5568 | gfc_symbol* sym; | |
5569 | tree result; | |
5570 | tree fndecl; | |
5571 | ||
5572 | sym = current_procedure_symbol; | |
5573 | fndecl = sym->backend_decl; | |
5574 | ||
5575 | if (TREE_TYPE (DECL_RESULT (fndecl)) == void_type_node) | |
5576 | result = NULL_TREE; | |
5577 | else | |
5578 | { | |
5579 | result = get_proc_result (sym); | |
5580 | ||
5581 | /* Set the return value to the dummy result variable. The | |
5582 | types may be different for scalar default REAL functions | |
5583 | with -ff2c, therefore we have to convert. */ | |
5584 | if (result != NULL_TREE) | |
5585 | { | |
5586 | result = convert (TREE_TYPE (DECL_RESULT (fndecl)), result); | |
bc98ed60 TB |
5587 | result = fold_build2_loc (input_location, MODIFY_EXPR, |
5588 | TREE_TYPE (result), DECL_RESULT (fndecl), | |
5589 | result); | |
d74d8807 DK |
5590 | } |
5591 | } | |
5592 | ||
5593 | return build1_v (RETURN_EXPR, result); | |
5594 | } | |
5595 | ||
5596 | ||
8b198102 FXC |
5597 | static void |
5598 | is_from_ieee_module (gfc_symbol *sym) | |
5599 | { | |
5600 | if (sym->from_intmod == INTMOD_IEEE_FEATURES | |
5601 | || sym->from_intmod == INTMOD_IEEE_EXCEPTIONS | |
5602 | || sym->from_intmod == INTMOD_IEEE_ARITHMETIC) | |
5603 | seen_ieee_symbol = 1; | |
5604 | } | |
5605 | ||
5606 | ||
5607 | static int | |
5608 | is_ieee_module_used (gfc_namespace *ns) | |
5609 | { | |
5610 | seen_ieee_symbol = 0; | |
5611 | gfc_traverse_ns (ns, is_from_ieee_module); | |
5612 | return seen_ieee_symbol; | |
5613 | } | |
5614 | ||
5615 | ||
5616 | static tree | |
5617 | save_fp_state (stmtblock_t *block) | |
5618 | { | |
5619 | tree type, fpstate, tmp; | |
5620 | ||
5621 | type = build_array_type (char_type_node, | |
5622 | build_range_type (size_type_node, size_zero_node, | |
5623 | size_int (32))); | |
5624 | fpstate = gfc_create_var (type, "fpstate"); | |
5625 | fpstate = gfc_build_addr_expr (pvoid_type_node, fpstate); | |
5626 | ||
5627 | tmp = build_call_expr_loc (input_location, gfor_fndecl_ieee_procedure_entry, | |
5628 | 1, fpstate); | |
5629 | gfc_add_expr_to_block (block, tmp); | |
5630 | ||
5631 | return fpstate; | |
5632 | } | |
5633 | ||
5634 | ||
5635 | static void | |
5636 | restore_fp_state (stmtblock_t *block, tree fpstate) | |
5637 | { | |
5638 | tree tmp; | |
5639 | ||
5640 | tmp = build_call_expr_loc (input_location, gfor_fndecl_ieee_procedure_exit, | |
5641 | 1, fpstate); | |
5642 | gfc_add_expr_to_block (block, tmp); | |
5643 | } | |
5644 | ||
5645 | ||
6de9cd9a DN |
5646 | /* Generate code for a function. */ |
5647 | ||
5648 | void | |
5649 | gfc_generate_function_code (gfc_namespace * ns) | |
5650 | { | |
5651 | tree fndecl; | |
5652 | tree old_context; | |
5653 | tree decl; | |
5654 | tree tmp; | |
8b198102 | 5655 | tree fpstate = NULL_TREE; |
d74d8807 | 5656 | stmtblock_t init, cleanup; |
6de9cd9a | 5657 | stmtblock_t body; |
d74d8807 | 5658 | gfc_wrapped_block try_block; |
702a738b | 5659 | tree recurcheckvar = NULL_TREE; |
6de9cd9a | 5660 | gfc_symbol *sym; |
d74d8807 | 5661 | gfc_symbol *previous_procedure_symbol; |
8b198102 | 5662 | int rank, ieee; |
cf7d2eb0 | 5663 | bool is_recursive; |
6de9cd9a DN |
5664 | |
5665 | sym = ns->proc_name; | |
d74d8807 DK |
5666 | previous_procedure_symbol = current_procedure_symbol; |
5667 | current_procedure_symbol = sym; | |
3d79abbd | 5668 | |
6de9cd9a | 5669 | /* Check that the frontend isn't still using this. */ |
6e45f57b | 5670 | gcc_assert (sym->tlink == NULL); |
6de9cd9a DN |
5671 | sym->tlink = sym; |
5672 | ||
5673 | /* Create the declaration for functions with global scope. */ | |
5674 | if (!sym->backend_decl) | |
fb55ca75 | 5675 | gfc_create_function_decl (ns, false); |
6de9cd9a DN |
5676 | |
5677 | fndecl = sym->backend_decl; | |
5678 | old_context = current_function_decl; | |
5679 | ||
5680 | if (old_context) | |
5681 | { | |
5682 | push_function_context (); | |
5683 | saved_parent_function_decls = saved_function_decls; | |
5684 | saved_function_decls = NULL_TREE; | |
5685 | } | |
5686 | ||
3d79abbd | 5687 | trans_function_start (sym); |
6de9cd9a | 5688 | |
d74d8807 | 5689 | gfc_init_block (&init); |
6de9cd9a | 5690 | |
d198b59a JJ |
5691 | if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER) |
5692 | { | |
5693 | /* Copy length backend_decls to all entry point result | |
5694 | symbols. */ | |
5695 | gfc_entry_list *el; | |
5696 | tree backend_decl; | |
5697 | ||
bc21d315 JW |
5698 | gfc_conv_const_charlen (ns->proc_name->ts.u.cl); |
5699 | backend_decl = ns->proc_name->result->ts.u.cl->backend_decl; | |
d198b59a | 5700 | for (el = ns->entries; el; el = el->next) |
bc21d315 | 5701 | el->sym->result->ts.u.cl->backend_decl = backend_decl; |
d198b59a JJ |
5702 | } |
5703 | ||
6de9cd9a DN |
5704 | /* Translate COMMON blocks. */ |
5705 | gfc_trans_common (ns); | |
5706 | ||
5f20c93a PT |
5707 | /* Null the parent fake result declaration if this namespace is |
5708 | a module function or an external procedures. */ | |
5709 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
5710 | || ns->parent == NULL) | |
5711 | parent_fake_result_decl = NULL_TREE; | |
5712 | ||
30aabb86 PT |
5713 | gfc_generate_contained_functions (ns); |
5714 | ||
77f2a970 JJ |
5715 | nonlocal_dummy_decls = NULL; |
5716 | nonlocal_dummy_decl_pset = NULL; | |
5717 | ||
b8ff4e88 | 5718 | has_coarray_vars = false; |
6de9cd9a | 5719 | generate_local_vars (ns); |
7389bce6 | 5720 | |
b8ff4e88 TB |
5721 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
5722 | generate_coarray_init (ns); | |
5723 | ||
5f20c93a PT |
5724 | /* Keep the parent fake result declaration in module functions |
5725 | or external procedures. */ | |
5726 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
5727 | || ns->parent == NULL) | |
5728 | current_fake_result_decl = parent_fake_result_decl; | |
5729 | else | |
5730 | current_fake_result_decl = NULL_TREE; | |
5731 | ||
d74d8807 DK |
5732 | is_recursive = sym->attr.recursive |
5733 | || (sym->attr.entry_master | |
5734 | && sym->ns->entries->sym->attr.recursive); | |
5735 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
5736 | && !is_recursive | |
5737 | && !gfc_option.flag_recursive) | |
5738 | { | |
5739 | char * msg; | |
5740 | ||
5741 | asprintf (&msg, "Recursive call to nonrecursive procedure '%s'", | |
5742 | sym->name); | |
5743 | recurcheckvar = gfc_create_var (boolean_type_node, "is_recursive"); | |
5744 | TREE_STATIC (recurcheckvar) = 1; | |
5745 | DECL_INITIAL (recurcheckvar) = boolean_false_node; | |
5746 | gfc_add_expr_to_block (&init, recurcheckvar); | |
5747 | gfc_trans_runtime_check (true, false, recurcheckvar, &init, | |
5748 | &sym->declared_at, msg); | |
5749 | gfc_add_modify (&init, recurcheckvar, boolean_true_node); | |
cede9502 | 5750 | free (msg); |
d74d8807 | 5751 | } |
6de9cd9a | 5752 | |
8b198102 FXC |
5753 | /* Check if an IEEE module is used in the procedure. If so, save |
5754 | the floating point state. */ | |
5755 | ieee = is_ieee_module_used (ns); | |
5756 | if (ieee) | |
5757 | fpstate = save_fp_state (&init); | |
5758 | ||
6de9cd9a DN |
5759 | /* Now generate the code for the body of this function. */ |
5760 | gfc_init_block (&body); | |
5761 | ||
5762 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node | |
d74d8807 | 5763 | && sym->attr.subroutine) |
6de9cd9a DN |
5764 | { |
5765 | tree alternate_return; | |
5f20c93a | 5766 | alternate_return = gfc_get_fake_result_decl (sym, 0); |
726a989a | 5767 | gfc_add_modify (&body, alternate_return, integer_zero_node); |
6de9cd9a DN |
5768 | } |
5769 | ||
3d79abbd PB |
5770 | if (ns->entries) |
5771 | { | |
5772 | /* Jump to the correct entry point. */ | |
5773 | tmp = gfc_trans_entry_master_switch (ns->entries); | |
5774 | gfc_add_expr_to_block (&body, tmp); | |
5775 | } | |
5776 | ||
cadb8f42 DK |
5777 | /* If bounds-checking is enabled, generate code to check passed in actual |
5778 | arguments against the expected dummy argument attributes (e.g. string | |
5779 | lengths). */ | |
975d3303 | 5780 | if ((gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) && !sym->attr.is_bind_c) |
cadb8f42 DK |
5781 | add_argument_checking (&body, sym); |
5782 | ||
6de9cd9a DN |
5783 | tmp = gfc_trans_code (ns->code); |
5784 | gfc_add_expr_to_block (&body, tmp); | |
5785 | ||
6de9cd9a DN |
5786 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node) |
5787 | { | |
d74d8807 | 5788 | tree result = get_proc_result (sym); |
6de9cd9a | 5789 | |
7a3eeb85 | 5790 | if (result != NULL_TREE && sym->attr.function && !sym->attr.pointer) |
5046aff5 | 5791 | { |
f18694de TB |
5792 | if (sym->attr.allocatable && sym->attr.dimension == 0 |
5793 | && sym->result == sym) | |
5794 | gfc_add_modify (&init, result, fold_convert (TREE_TYPE (result), | |
5795 | null_pointer_node)); | |
7a3eeb85 JW |
5796 | else if (sym->ts.type == BT_CLASS |
5797 | && CLASS_DATA (sym)->attr.allocatable | |
102344e2 TB |
5798 | && CLASS_DATA (sym)->attr.dimension == 0 |
5799 | && sym->result == sym) | |
7a3eeb85 JW |
5800 | { |
5801 | tmp = CLASS_DATA (sym)->backend_decl; | |
5802 | tmp = fold_build3_loc (input_location, COMPONENT_REF, | |
5803 | TREE_TYPE (tmp), result, tmp, NULL_TREE); | |
5804 | gfc_add_modify (&init, tmp, fold_convert (TREE_TYPE (tmp), | |
5805 | null_pointer_node)); | |
5806 | } | |
f18694de | 5807 | else if (sym->ts.type == BT_DERIVED |
7a3eeb85 JW |
5808 | && sym->ts.u.derived->attr.alloc_comp |
5809 | && !sym->attr.allocatable) | |
5b130807 TB |
5810 | { |
5811 | rank = sym->as ? sym->as->rank : 0; | |
d74d8807 DK |
5812 | tmp = gfc_nullify_alloc_comp (sym->ts.u.derived, result, rank); |
5813 | gfc_add_expr_to_block (&init, tmp); | |
5b130807 | 5814 | } |
958dd42b | 5815 | } |
cf7d2eb0 | 5816 | |
766d0c8c DF |
5817 | if (result == NULL_TREE) |
5818 | { | |
5819 | /* TODO: move to the appropriate place in resolve.c. */ | |
fba5ace0 | 5820 | if (warn_return_type && sym == sym->result) |
766d0c8c DF |
5821 | gfc_warning ("Return value of function '%s' at %L not set", |
5822 | sym->name, &sym->declared_at); | |
fba5ace0 TB |
5823 | if (warn_return_type) |
5824 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
766d0c8c | 5825 | } |
6de9cd9a | 5826 | else |
d74d8807 | 5827 | gfc_add_expr_to_block (&body, gfc_generate_return ()); |
6de9cd9a | 5828 | } |
d74d8807 DK |
5829 | |
5830 | gfc_init_block (&cleanup); | |
5831 | ||
5832 | /* Reset recursion-check variable. */ | |
5833 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
5834 | && !is_recursive | |
e3339d0f | 5835 | && !gfc_option.gfc_flag_openmp |
d74d8807 | 5836 | && recurcheckvar != NULL_TREE) |
cf7d2eb0 | 5837 | { |
d74d8807 DK |
5838 | gfc_add_modify (&cleanup, recurcheckvar, boolean_false_node); |
5839 | recurcheckvar = NULL; | |
cf7d2eb0 | 5840 | } |
5046aff5 | 5841 | |
8b198102 FXC |
5842 | /* If IEEE modules are loaded, restore the floating-point state. */ |
5843 | if (ieee) | |
5844 | restore_fp_state (&cleanup, fpstate); | |
5845 | ||
d74d8807 DK |
5846 | /* Finish the function body and add init and cleanup code. */ |
5847 | tmp = gfc_finish_block (&body); | |
5848 | gfc_start_wrapped_block (&try_block, tmp); | |
5849 | /* Add code to create and cleanup arrays. */ | |
5850 | gfc_trans_deferred_vars (sym, &try_block); | |
5851 | gfc_add_init_cleanup (&try_block, gfc_finish_block (&init), | |
5852 | gfc_finish_block (&cleanup)); | |
6de9cd9a DN |
5853 | |
5854 | /* Add all the decls we created during processing. */ | |
5855 | decl = saved_function_decls; | |
5856 | while (decl) | |
5857 | { | |
5858 | tree next; | |
5859 | ||
910ad8de NF |
5860 | next = DECL_CHAIN (decl); |
5861 | DECL_CHAIN (decl) = NULL_TREE; | |
755634e6 | 5862 | pushdecl (decl); |
6de9cd9a DN |
5863 | decl = next; |
5864 | } | |
5865 | saved_function_decls = NULL_TREE; | |
5866 | ||
d74d8807 | 5867 | DECL_SAVED_TREE (fndecl) = gfc_finish_wrapped_block (&try_block); |
c7c79a09 | 5868 | decl = getdecls (); |
6de9cd9a DN |
5869 | |
5870 | /* Finish off this function and send it for code generation. */ | |
87a60f68 | 5871 | poplevel (1, 1); |
6de9cd9a DN |
5872 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; |
5873 | ||
c7c79a09 JJ |
5874 | DECL_SAVED_TREE (fndecl) |
5875 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5876 | DECL_INITIAL (fndecl)); | |
5877 | ||
77f2a970 JJ |
5878 | if (nonlocal_dummy_decls) |
5879 | { | |
5880 | BLOCK_VARS (DECL_INITIAL (fndecl)) | |
5881 | = chainon (BLOCK_VARS (DECL_INITIAL (fndecl)), nonlocal_dummy_decls); | |
6e2830c3 | 5882 | delete nonlocal_dummy_decl_pset; |
77f2a970 JJ |
5883 | nonlocal_dummy_decls = NULL; |
5884 | nonlocal_dummy_decl_pset = NULL; | |
5885 | } | |
5886 | ||
6de9cd9a DN |
5887 | /* Output the GENERIC tree. */ |
5888 | dump_function (TDI_original, fndecl); | |
5889 | ||
5890 | /* Store the end of the function, so that we get good line number | |
5891 | info for the epilogue. */ | |
5892 | cfun->function_end_locus = input_location; | |
5893 | ||
5894 | /* We're leaving the context of this function, so zap cfun. | |
5895 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
5896 | tree_rest_of_compilation. */ | |
db2960f4 | 5897 | set_cfun (NULL); |
6de9cd9a DN |
5898 | |
5899 | if (old_context) | |
5900 | { | |
5901 | pop_function_context (); | |
5902 | saved_function_decls = saved_parent_function_decls; | |
5903 | } | |
5904 | current_function_decl = old_context; | |
5905 | ||
15682f24 MJ |
5906 | if (decl_function_context (fndecl)) |
5907 | { | |
5908 | /* Register this function with cgraph just far enough to get it | |
5909 | added to our parent's nested function list. | |
5910 | If there are static coarrays in this function, the nested _caf_init | |
5911 | function has already called cgraph_create_node, which also created | |
5912 | the cgraph node for this function. */ | |
5913 | if (!has_coarray_vars || gfc_option.coarray != GFC_FCOARRAY_LIB) | |
d52f5295 | 5914 | (void) cgraph_node::create (fndecl); |
15682f24 | 5915 | } |
6de9cd9a | 5916 | else |
3dafb85c | 5917 | cgraph_node::finalize_function (fndecl, true); |
a64f5186 JJ |
5918 | |
5919 | gfc_trans_use_stmts (ns); | |
bd11e37d | 5920 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
092231a8 TB |
5921 | |
5922 | if (sym->attr.is_main_program) | |
5923 | create_main_function (fndecl); | |
d74d8807 DK |
5924 | |
5925 | current_procedure_symbol = previous_procedure_symbol; | |
6de9cd9a DN |
5926 | } |
5927 | ||
092231a8 | 5928 | |
6de9cd9a DN |
5929 | void |
5930 | gfc_generate_constructors (void) | |
5931 | { | |
6e45f57b | 5932 | gcc_assert (gfc_static_ctors == NULL_TREE); |
6de9cd9a DN |
5933 | #if 0 |
5934 | tree fnname; | |
5935 | tree type; | |
5936 | tree fndecl; | |
5937 | tree decl; | |
5938 | tree tmp; | |
5939 | ||
5940 | if (gfc_static_ctors == NULL_TREE) | |
5941 | return; | |
5942 | ||
5880f14f | 5943 | fnname = get_file_function_name ("I"); |
b64fca63 | 5944 | type = build_function_type_list (void_type_node, NULL_TREE); |
6de9cd9a | 5945 | |
c2255bc4 AH |
5946 | fndecl = build_decl (input_location, |
5947 | FUNCTION_DECL, fnname, type); | |
6de9cd9a DN |
5948 | TREE_PUBLIC (fndecl) = 1; |
5949 | ||
c2255bc4 AH |
5950 | decl = build_decl (input_location, |
5951 | RESULT_DECL, NULL_TREE, void_type_node); | |
b785f485 RH |
5952 | DECL_ARTIFICIAL (decl) = 1; |
5953 | DECL_IGNORED_P (decl) = 1; | |
6de9cd9a DN |
5954 | DECL_CONTEXT (decl) = fndecl; |
5955 | DECL_RESULT (fndecl) = decl; | |
5956 | ||
5957 | pushdecl (fndecl); | |
5958 | ||
5959 | current_function_decl = fndecl; | |
5960 | ||
0e6df31e | 5961 | rest_of_decl_compilation (fndecl, 1, 0); |
6de9cd9a | 5962 | |
0e6df31e | 5963 | make_decl_rtl (fndecl); |
6de9cd9a | 5964 | |
b6b27e98 | 5965 | allocate_struct_function (fndecl, false); |
6de9cd9a | 5966 | |
87a60f68 | 5967 | pushlevel (); |
6de9cd9a DN |
5968 | |
5969 | for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors)) | |
5970 | { | |
db3927fb AH |
5971 | tmp = build_call_expr_loc (input_location, |
5972 | TREE_VALUE (gfc_static_ctors), 0); | |
c2255bc4 | 5973 | DECL_SAVED_TREE (fndecl) = build_stmt (input_location, EXPR_STMT, tmp); |
6de9cd9a DN |
5974 | } |
5975 | ||
c7c79a09 | 5976 | decl = getdecls (); |
87a60f68 | 5977 | poplevel (1, 1); |
6de9cd9a DN |
5978 | |
5979 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
c7c79a09 JJ |
5980 | DECL_SAVED_TREE (fndecl) |
5981 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5982 | DECL_INITIAL (fndecl)); | |
6de9cd9a DN |
5983 | |
5984 | free_after_parsing (cfun); | |
5985 | free_after_compilation (cfun); | |
5986 | ||
0f0377f6 | 5987 | tree_rest_of_compilation (fndecl); |
6de9cd9a DN |
5988 | |
5989 | current_function_decl = NULL_TREE; | |
5990 | #endif | |
5991 | } | |
5992 | ||
0de4325e TS |
5993 | /* Translates a BLOCK DATA program unit. This means emitting the |
5994 | commons contained therein plus their initializations. We also emit | |
5995 | a globally visible symbol to make sure that each BLOCK DATA program | |
5996 | unit remains unique. */ | |
5997 | ||
5998 | void | |
5999 | gfc_generate_block_data (gfc_namespace * ns) | |
6000 | { | |
6001 | tree decl; | |
6002 | tree id; | |
6003 | ||
c8cc8542 PB |
6004 | /* Tell the backend the source location of the block data. */ |
6005 | if (ns->proc_name) | |
6006 | gfc_set_backend_locus (&ns->proc_name->declared_at); | |
6007 | else | |
6008 | gfc_set_backend_locus (&gfc_current_locus); | |
6009 | ||
6010 | /* Process the DATA statements. */ | |
0de4325e TS |
6011 | gfc_trans_common (ns); |
6012 | ||
c8cc8542 PB |
6013 | /* Create a global symbol with the mane of the block data. This is to |
6014 | generate linker errors if the same name is used twice. It is never | |
6015 | really used. */ | |
0de4325e TS |
6016 | if (ns->proc_name) |
6017 | id = gfc_sym_mangled_function_id (ns->proc_name); | |
6018 | else | |
6019 | id = get_identifier ("__BLOCK_DATA__"); | |
6020 | ||
c2255bc4 AH |
6021 | decl = build_decl (input_location, |
6022 | VAR_DECL, id, gfc_array_index_type); | |
0de4325e TS |
6023 | TREE_PUBLIC (decl) = 1; |
6024 | TREE_STATIC (decl) = 1; | |
a64f5186 | 6025 | DECL_IGNORED_P (decl) = 1; |
0de4325e TS |
6026 | |
6027 | pushdecl (decl); | |
6028 | rest_of_decl_compilation (decl, 1, 0); | |
6029 | } | |
6030 | ||
83d890b9 | 6031 | |
9abe5e56 DK |
6032 | /* Process the local variables of a BLOCK construct. */ |
6033 | ||
6034 | void | |
6312ef45 | 6035 | gfc_process_block_locals (gfc_namespace* ns) |
9abe5e56 DK |
6036 | { |
6037 | tree decl; | |
6038 | ||
6039 | gcc_assert (saved_local_decls == NULL_TREE); | |
b8ff4e88 TB |
6040 | has_coarray_vars = false; |
6041 | ||
9abe5e56 DK |
6042 | generate_local_vars (ns); |
6043 | ||
b8ff4e88 TB |
6044 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
6045 | generate_coarray_init (ns); | |
6046 | ||
9abe5e56 DK |
6047 | decl = saved_local_decls; |
6048 | while (decl) | |
6049 | { | |
6050 | tree next; | |
6051 | ||
910ad8de NF |
6052 | next = DECL_CHAIN (decl); |
6053 | DECL_CHAIN (decl) = NULL_TREE; | |
9abe5e56 DK |
6054 | pushdecl (decl); |
6055 | decl = next; | |
6056 | } | |
6057 | saved_local_decls = NULL_TREE; | |
6058 | } | |
6059 | ||
6060 | ||
6de9cd9a | 6061 | #include "gt-fortran-trans-decl.h" |