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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; | |
a16ee379 | 148 | tree gfor_fndecl_co_broadcast; |
d62cf3df TB |
149 | tree gfor_fndecl_co_max; |
150 | tree gfor_fndecl_co_min; | |
151 | tree gfor_fndecl_co_sum; | |
60386f50 | 152 | |
60386f50 | 153 | |
6de9cd9a DN |
154 | /* Math functions. Many other math functions are handled in |
155 | trans-intrinsic.c. */ | |
156 | ||
644cb69f | 157 | gfc_powdecl_list gfor_fndecl_math_powi[4][3]; |
6de9cd9a DN |
158 | tree gfor_fndecl_math_ishftc4; |
159 | tree gfor_fndecl_math_ishftc8; | |
644cb69f | 160 | tree gfor_fndecl_math_ishftc16; |
6de9cd9a DN |
161 | |
162 | ||
163 | /* String functions. */ | |
164 | ||
6de9cd9a DN |
165 | tree gfor_fndecl_compare_string; |
166 | tree gfor_fndecl_concat_string; | |
167 | tree gfor_fndecl_string_len_trim; | |
168 | tree gfor_fndecl_string_index; | |
169 | tree gfor_fndecl_string_scan; | |
170 | tree gfor_fndecl_string_verify; | |
171 | tree gfor_fndecl_string_trim; | |
2263c775 | 172 | tree gfor_fndecl_string_minmax; |
6de9cd9a DN |
173 | tree gfor_fndecl_adjustl; |
174 | tree gfor_fndecl_adjustr; | |
d393bbd7 | 175 | tree gfor_fndecl_select_string; |
374929b2 FXC |
176 | tree gfor_fndecl_compare_string_char4; |
177 | tree gfor_fndecl_concat_string_char4; | |
178 | tree gfor_fndecl_string_len_trim_char4; | |
179 | tree gfor_fndecl_string_index_char4; | |
180 | tree gfor_fndecl_string_scan_char4; | |
181 | tree gfor_fndecl_string_verify_char4; | |
182 | tree gfor_fndecl_string_trim_char4; | |
183 | tree gfor_fndecl_string_minmax_char4; | |
184 | tree gfor_fndecl_adjustl_char4; | |
185 | tree gfor_fndecl_adjustr_char4; | |
d393bbd7 FXC |
186 | tree gfor_fndecl_select_string_char4; |
187 | ||
188 | ||
189 | /* Conversion between character kinds. */ | |
190 | tree gfor_fndecl_convert_char1_to_char4; | |
191 | tree gfor_fndecl_convert_char4_to_char1; | |
6de9cd9a DN |
192 | |
193 | ||
194 | /* Other misc. runtime library functions. */ | |
6de9cd9a DN |
195 | tree gfor_fndecl_size0; |
196 | tree gfor_fndecl_size1; | |
b41b2534 | 197 | tree gfor_fndecl_iargc; |
6de9cd9a | 198 | |
a39fafac FXC |
199 | /* Intrinsic functions implemented in Fortran. */ |
200 | tree gfor_fndecl_sc_kind; | |
6de9cd9a DN |
201 | tree gfor_fndecl_si_kind; |
202 | tree gfor_fndecl_sr_kind; | |
203 | ||
5a0aad31 FXC |
204 | /* BLAS gemm functions. */ |
205 | tree gfor_fndecl_sgemm; | |
206 | tree gfor_fndecl_dgemm; | |
207 | tree gfor_fndecl_cgemm; | |
208 | tree gfor_fndecl_zgemm; | |
209 | ||
6de9cd9a DN |
210 | |
211 | static void | |
212 | gfc_add_decl_to_parent_function (tree decl) | |
213 | { | |
6e45f57b | 214 | gcc_assert (decl); |
6de9cd9a DN |
215 | DECL_CONTEXT (decl) = DECL_CONTEXT (current_function_decl); |
216 | DECL_NONLOCAL (decl) = 1; | |
910ad8de | 217 | DECL_CHAIN (decl) = saved_parent_function_decls; |
6de9cd9a DN |
218 | saved_parent_function_decls = decl; |
219 | } | |
220 | ||
221 | void | |
222 | gfc_add_decl_to_function (tree decl) | |
223 | { | |
6e45f57b | 224 | gcc_assert (decl); |
6de9cd9a DN |
225 | TREE_USED (decl) = 1; |
226 | DECL_CONTEXT (decl) = current_function_decl; | |
910ad8de | 227 | DECL_CHAIN (decl) = saved_function_decls; |
6de9cd9a DN |
228 | saved_function_decls = decl; |
229 | } | |
230 | ||
9abe5e56 DK |
231 | static void |
232 | add_decl_as_local (tree decl) | |
233 | { | |
234 | gcc_assert (decl); | |
235 | TREE_USED (decl) = 1; | |
236 | DECL_CONTEXT (decl) = current_function_decl; | |
910ad8de | 237 | DECL_CHAIN (decl) = saved_local_decls; |
9abe5e56 DK |
238 | saved_local_decls = decl; |
239 | } | |
240 | ||
6de9cd9a | 241 | |
c006df4e SB |
242 | /* Build a backend label declaration. Set TREE_USED for named labels. |
243 | The context of the label is always the current_function_decl. All | |
244 | labels are marked artificial. */ | |
6de9cd9a DN |
245 | |
246 | tree | |
247 | gfc_build_label_decl (tree label_id) | |
248 | { | |
249 | /* 2^32 temporaries should be enough. */ | |
250 | static unsigned int tmp_num = 1; | |
251 | tree label_decl; | |
252 | char *label_name; | |
253 | ||
254 | if (label_id == NULL_TREE) | |
255 | { | |
256 | /* Build an internal label name. */ | |
257 | ASM_FORMAT_PRIVATE_NAME (label_name, "L", tmp_num++); | |
258 | label_id = get_identifier (label_name); | |
259 | } | |
260 | else | |
261 | label_name = NULL; | |
262 | ||
263 | /* Build the LABEL_DECL node. Labels have no type. */ | |
c2255bc4 AH |
264 | label_decl = build_decl (input_location, |
265 | LABEL_DECL, label_id, void_type_node); | |
6de9cd9a DN |
266 | DECL_CONTEXT (label_decl) = current_function_decl; |
267 | DECL_MODE (label_decl) = VOIDmode; | |
268 | ||
c006df4e SB |
269 | /* We always define the label as used, even if the original source |
270 | file never references the label. We don't want all kinds of | |
271 | spurious warnings for old-style Fortran code with too many | |
272 | labels. */ | |
273 | TREE_USED (label_decl) = 1; | |
6de9cd9a | 274 | |
c006df4e | 275 | DECL_ARTIFICIAL (label_decl) = 1; |
6de9cd9a DN |
276 | return label_decl; |
277 | } | |
278 | ||
279 | ||
c8cc8542 PB |
280 | /* Set the backend source location of a decl. */ |
281 | ||
282 | void | |
283 | gfc_set_decl_location (tree decl, locus * loc) | |
284 | { | |
c8cc8542 | 285 | DECL_SOURCE_LOCATION (decl) = loc->lb->location; |
c8cc8542 PB |
286 | } |
287 | ||
288 | ||
6de9cd9a DN |
289 | /* Return the backend label declaration for a given label structure, |
290 | or create it if it doesn't exist yet. */ | |
291 | ||
292 | tree | |
293 | gfc_get_label_decl (gfc_st_label * lp) | |
294 | { | |
6de9cd9a DN |
295 | if (lp->backend_decl) |
296 | return lp->backend_decl; | |
297 | else | |
298 | { | |
299 | char label_name[GFC_MAX_SYMBOL_LEN + 1]; | |
300 | tree label_decl; | |
301 | ||
302 | /* Validate the label declaration from the front end. */ | |
6e45f57b | 303 | gcc_assert (lp != NULL && lp->value <= MAX_LABEL_VALUE); |
6de9cd9a DN |
304 | |
305 | /* Build a mangled name for the label. */ | |
306 | sprintf (label_name, "__label_%.6d", lp->value); | |
307 | ||
308 | /* Build the LABEL_DECL node. */ | |
309 | label_decl = gfc_build_label_decl (get_identifier (label_name)); | |
310 | ||
311 | /* Tell the debugger where the label came from. */ | |
f8d0aee5 | 312 | if (lp->value <= MAX_LABEL_VALUE) /* An internal label. */ |
c8cc8542 | 313 | gfc_set_decl_location (label_decl, &lp->where); |
6de9cd9a DN |
314 | else |
315 | DECL_ARTIFICIAL (label_decl) = 1; | |
316 | ||
317 | /* Store the label in the label list and return the LABEL_DECL. */ | |
318 | lp->backend_decl = label_decl; | |
319 | return label_decl; | |
320 | } | |
321 | } | |
322 | ||
323 | ||
324 | /* Convert a gfc_symbol to an identifier of the same name. */ | |
325 | ||
326 | static tree | |
327 | gfc_sym_identifier (gfc_symbol * sym) | |
328 | { | |
a7ad6c2d TB |
329 | if (sym->attr.is_main_program && strcmp (sym->name, "main") == 0) |
330 | return (get_identifier ("MAIN__")); | |
331 | else | |
332 | return (get_identifier (sym->name)); | |
6de9cd9a DN |
333 | } |
334 | ||
335 | ||
336 | /* Construct mangled name from symbol name. */ | |
337 | ||
338 | static tree | |
339 | gfc_sym_mangled_identifier (gfc_symbol * sym) | |
340 | { | |
341 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
342 | ||
a8b3b0b6 CR |
343 | /* Prevent the mangling of identifiers that have an assigned |
344 | binding label (mainly those that are bind(c)). */ | |
62603fae JB |
345 | if (sym->attr.is_bind_c == 1 && sym->binding_label) |
346 | return get_identifier (sym->binding_label); | |
8b704316 | 347 | |
cb9e4f55 | 348 | if (sym->module == NULL) |
6de9cd9a DN |
349 | return gfc_sym_identifier (sym); |
350 | else | |
351 | { | |
9998ef84 | 352 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
6de9cd9a DN |
353 | return get_identifier (name); |
354 | } | |
355 | } | |
356 | ||
357 | ||
358 | /* Construct mangled function name from symbol name. */ | |
359 | ||
360 | static tree | |
361 | gfc_sym_mangled_function_id (gfc_symbol * sym) | |
362 | { | |
363 | int has_underscore; | |
364 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
365 | ||
a8b3b0b6 CR |
366 | /* It may be possible to simply use the binding label if it's |
367 | provided, and remove the other checks. Then we could use it | |
368 | for other things if we wished. */ | |
369 | if ((sym->attr.is_bind_c == 1 || sym->attr.is_iso_c == 1) && | |
62603fae | 370 | sym->binding_label) |
a8b3b0b6 CR |
371 | /* use the binding label rather than the mangled name */ |
372 | return get_identifier (sym->binding_label); | |
373 | ||
cb9e4f55 | 374 | if (sym->module == NULL || sym->attr.proc == PROC_EXTERNAL |
c89686a8 PT |
375 | || (sym->module != NULL && (sym->attr.external |
376 | || sym->attr.if_source == IFSRC_IFBODY))) | |
6de9cd9a | 377 | { |
ecf24057 FXC |
378 | /* Main program is mangled into MAIN__. */ |
379 | if (sym->attr.is_main_program) | |
380 | return get_identifier ("MAIN__"); | |
381 | ||
382 | /* Intrinsic procedures are never mangled. */ | |
383 | if (sym->attr.proc == PROC_INTRINSIC) | |
6de9cd9a DN |
384 | return get_identifier (sym->name); |
385 | ||
386 | if (gfc_option.flag_underscoring) | |
387 | { | |
388 | has_underscore = strchr (sym->name, '_') != 0; | |
389 | if (gfc_option.flag_second_underscore && has_underscore) | |
390 | snprintf (name, sizeof name, "%s__", sym->name); | |
391 | else | |
392 | snprintf (name, sizeof name, "%s_", sym->name); | |
393 | return get_identifier (name); | |
394 | } | |
395 | else | |
396 | return get_identifier (sym->name); | |
397 | } | |
398 | else | |
399 | { | |
9998ef84 | 400 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
6de9cd9a DN |
401 | return get_identifier (name); |
402 | } | |
403 | } | |
404 | ||
405 | ||
43ce5e52 FXC |
406 | void |
407 | gfc_set_decl_assembler_name (tree decl, tree name) | |
408 | { | |
409 | tree target_mangled = targetm.mangle_decl_assembler_name (decl, name); | |
410 | SET_DECL_ASSEMBLER_NAME (decl, target_mangled); | |
411 | } | |
412 | ||
413 | ||
bae88af6 TS |
414 | /* Returns true if a variable of specified size should go on the stack. */ |
415 | ||
416 | int | |
417 | gfc_can_put_var_on_stack (tree size) | |
418 | { | |
419 | unsigned HOST_WIDE_INT low; | |
420 | ||
421 | if (!INTEGER_CST_P (size)) | |
422 | return 0; | |
423 | ||
424 | if (gfc_option.flag_max_stack_var_size < 0) | |
425 | return 1; | |
426 | ||
807e902e | 427 | if (!tree_fits_uhwi_p (size)) |
bae88af6 TS |
428 | return 0; |
429 | ||
430 | low = TREE_INT_CST_LOW (size); | |
431 | if (low > (unsigned HOST_WIDE_INT) gfc_option.flag_max_stack_var_size) | |
432 | return 0; | |
433 | ||
434 | /* TODO: Set a per-function stack size limit. */ | |
435 | ||
436 | return 1; | |
437 | } | |
438 | ||
439 | ||
b122dc6a JJ |
440 | /* gfc_finish_cray_pointee sets DECL_VALUE_EXPR for a Cray pointee to |
441 | an expression involving its corresponding pointer. There are | |
442 | 2 cases; one for variable size arrays, and one for everything else, | |
443 | because variable-sized arrays require one fewer level of | |
444 | indirection. */ | |
445 | ||
446 | static void | |
447 | gfc_finish_cray_pointee (tree decl, gfc_symbol *sym) | |
448 | { | |
449 | tree ptr_decl = gfc_get_symbol_decl (sym->cp_pointer); | |
450 | tree value; | |
451 | ||
452 | /* Parameters need to be dereferenced. */ | |
8b704316 | 453 | if (sym->cp_pointer->attr.dummy) |
db3927fb AH |
454 | ptr_decl = build_fold_indirect_ref_loc (input_location, |
455 | ptr_decl); | |
b122dc6a JJ |
456 | |
457 | /* Check to see if we're dealing with a variable-sized array. */ | |
458 | if (sym->attr.dimension | |
8b704316 PT |
459 | && TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE) |
460 | { | |
831d7813 | 461 | /* These decls will be dereferenced later, so we don't dereference |
b122dc6a JJ |
462 | them here. */ |
463 | value = convert (TREE_TYPE (decl), ptr_decl); | |
464 | } | |
465 | else | |
466 | { | |
467 | ptr_decl = convert (build_pointer_type (TREE_TYPE (decl)), | |
468 | ptr_decl); | |
db3927fb AH |
469 | value = build_fold_indirect_ref_loc (input_location, |
470 | ptr_decl); | |
b122dc6a JJ |
471 | } |
472 | ||
473 | SET_DECL_VALUE_EXPR (decl, value); | |
474 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
6c7a4dfd | 475 | GFC_DECL_CRAY_POINTEE (decl) = 1; |
b122dc6a JJ |
476 | } |
477 | ||
478 | ||
faf28b3a | 479 | /* Finish processing of a declaration without an initial value. */ |
6de9cd9a DN |
480 | |
481 | static void | |
faf28b3a | 482 | gfc_finish_decl (tree decl) |
6de9cd9a | 483 | { |
faf28b3a TS |
484 | gcc_assert (TREE_CODE (decl) == PARM_DECL |
485 | || DECL_INITIAL (decl) == NULL_TREE); | |
6de9cd9a | 486 | |
faf28b3a TS |
487 | if (TREE_CODE (decl) != VAR_DECL) |
488 | return; | |
6de9cd9a | 489 | |
faf28b3a TS |
490 | if (DECL_SIZE (decl) == NULL_TREE |
491 | && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE) | |
492 | layout_decl (decl, 0); | |
493 | ||
494 | /* A few consistency checks. */ | |
495 | /* A static variable with an incomplete type is an error if it is | |
496 | initialized. Also if it is not file scope. Otherwise, let it | |
497 | through, but if it is not `extern' then it may cause an error | |
498 | message later. */ | |
499 | /* An automatic variable with an incomplete type is an error. */ | |
500 | ||
501 | /* We should know the storage size. */ | |
502 | gcc_assert (DECL_SIZE (decl) != NULL_TREE | |
8b704316 | 503 | || (TREE_STATIC (decl) |
faf28b3a TS |
504 | ? (!DECL_INITIAL (decl) || !DECL_CONTEXT (decl)) |
505 | : DECL_EXTERNAL (decl))); | |
506 | ||
507 | /* The storage size should be constant. */ | |
508 | gcc_assert ((!DECL_EXTERNAL (decl) && !TREE_STATIC (decl)) | |
509 | || !DECL_SIZE (decl) | |
510 | || TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST); | |
6de9cd9a DN |
511 | } |
512 | ||
513 | ||
92d28cbb JJ |
514 | /* Handle setting of GFC_DECL_SCALAR* on DECL. */ |
515 | ||
516 | void | |
517 | gfc_finish_decl_attrs (tree decl, symbol_attribute *attr) | |
518 | { | |
519 | if (!attr->dimension && !attr->codimension) | |
520 | { | |
521 | /* Handle scalar allocatable variables. */ | |
522 | if (attr->allocatable) | |
523 | { | |
524 | gfc_allocate_lang_decl (decl); | |
525 | GFC_DECL_SCALAR_ALLOCATABLE (decl) = 1; | |
526 | } | |
527 | /* Handle scalar pointer variables. */ | |
528 | if (attr->pointer) | |
529 | { | |
530 | gfc_allocate_lang_decl (decl); | |
531 | GFC_DECL_SCALAR_POINTER (decl) = 1; | |
532 | } | |
533 | } | |
534 | } | |
535 | ||
536 | ||
6de9cd9a DN |
537 | /* Apply symbol attributes to a variable, and add it to the function scope. */ |
538 | ||
539 | static void | |
540 | gfc_finish_var_decl (tree decl, gfc_symbol * sym) | |
541 | { | |
7b901ac4 | 542 | tree new_type; |
f8d0aee5 | 543 | /* TREE_ADDRESSABLE means the address of this variable is actually needed. |
6de9cd9a DN |
544 | This is the equivalent of the TARGET variables. |
545 | We also need to set this if the variable is passed by reference in a | |
546 | CALL statement. */ | |
83d890b9 | 547 | |
b122dc6a | 548 | /* Set DECL_VALUE_EXPR for Cray Pointees. */ |
83d890b9 | 549 | if (sym->attr.cray_pointee) |
b122dc6a | 550 | gfc_finish_cray_pointee (decl, sym); |
83d890b9 | 551 | |
6de9cd9a DN |
552 | if (sym->attr.target) |
553 | TREE_ADDRESSABLE (decl) = 1; | |
554 | /* If it wasn't used we wouldn't be getting it. */ | |
555 | TREE_USED (decl) = 1; | |
556 | ||
1e4b1376 TB |
557 | if (sym->attr.flavor == FL_PARAMETER |
558 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) | |
559 | TREE_READONLY (decl) = 1; | |
560 | ||
6de9cd9a DN |
561 | /* Chain this decl to the pending declarations. Don't do pushdecl() |
562 | because this would add them to the current scope rather than the | |
563 | function scope. */ | |
564 | if (current_function_decl != NULL_TREE) | |
565 | { | |
d48734ef | 566 | if (sym->ns->proc_name->backend_decl == current_function_decl |
9abe5e56 | 567 | || sym->result == sym) |
6de9cd9a | 568 | gfc_add_decl_to_function (decl); |
9abe5e56 DK |
569 | else if (sym->ns->proc_name->attr.flavor == FL_LABEL) |
570 | /* This is a BLOCK construct. */ | |
571 | add_decl_as_local (decl); | |
6de9cd9a DN |
572 | else |
573 | gfc_add_decl_to_parent_function (decl); | |
574 | } | |
575 | ||
b122dc6a JJ |
576 | if (sym->attr.cray_pointee) |
577 | return; | |
578 | ||
5af6fa0b | 579 | if(sym->attr.is_bind_c == 1 && sym->binding_label) |
a8b3b0b6 CR |
580 | { |
581 | /* We need to put variables that are bind(c) into the common | |
582 | segment of the object file, because this is what C would do. | |
583 | gfortran would typically put them in either the BSS or | |
584 | initialized data segments, and only mark them as common if | |
585 | they were part of common blocks. However, if they are not put | |
93c71688 | 586 | into common space, then C cannot initialize global Fortran |
a8b3b0b6 CR |
587 | variables that it interoperates with and the draft says that |
588 | either Fortran or C should be able to initialize it (but not | |
589 | both, of course.) (J3/04-007, section 15.3). */ | |
590 | TREE_PUBLIC(decl) = 1; | |
591 | DECL_COMMON(decl) = 1; | |
592 | } | |
8b704316 | 593 | |
6de9cd9a DN |
594 | /* If a variable is USE associated, it's always external. */ |
595 | if (sym->attr.use_assoc) | |
596 | { | |
597 | DECL_EXTERNAL (decl) = 1; | |
598 | TREE_PUBLIC (decl) = 1; | |
599 | } | |
cb9e4f55 | 600 | else if (sym->module && !sym->attr.result && !sym->attr.dummy) |
6de9cd9a | 601 | { |
adf3ed3f | 602 | /* TODO: Don't set sym->module for result or dummy variables. */ |
d48734ef | 603 | gcc_assert (current_function_decl == NULL_TREE || sym->result == sym); |
58341a42 | 604 | |
ed4639a9 | 605 | if (sym->attr.access != ACCESS_PRIVATE || sym->attr.public_used) |
5af6fa0b | 606 | TREE_PUBLIC (decl) = 1; |
6de9cd9a DN |
607 | TREE_STATIC (decl) = 1; |
608 | } | |
609 | ||
b7b184a8 PT |
610 | /* Derived types are a bit peculiar because of the possibility of |
611 | a default initializer; this must be applied each time the variable | |
612 | comes into scope it therefore need not be static. These variables | |
613 | are SAVE_NONE but have an initializer. Otherwise explicitly | |
df2fba9e | 614 | initialized variables are SAVE_IMPLICIT and explicitly saved are |
b7b184a8 PT |
615 | SAVE_EXPLICIT. */ |
616 | if (!sym->attr.use_assoc | |
617 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
b8ff4e88 TB |
618 | || (sym->value && sym->ns->proc_name->attr.is_main_program) |
619 | || (gfc_option.coarray == GFC_FCOARRAY_LIB | |
620 | && sym->attr.codimension && !sym->attr.allocatable))) | |
6de9cd9a | 621 | TREE_STATIC (decl) = 1; |
775e6c3a TB |
622 | |
623 | if (sym->attr.volatile_) | |
624 | { | |
775e6c3a | 625 | TREE_THIS_VOLATILE (decl) = 1; |
c28d1d9b | 626 | TREE_SIDE_EFFECTS (decl) = 1; |
7b901ac4 KG |
627 | new_type = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE); |
628 | TREE_TYPE (decl) = new_type; | |
8b704316 | 629 | } |
775e6c3a | 630 | |
6de9cd9a DN |
631 | /* Keep variables larger than max-stack-var-size off stack. */ |
632 | if (!sym->ns->proc_name->attr.recursive | |
633 | && INTEGER_CST_P (DECL_SIZE_UNIT (decl)) | |
9eccb94d JJ |
634 | && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) |
635 | /* Put variable length auto array pointers always into stack. */ | |
636 | && (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE | |
637 | || sym->attr.dimension == 0 | |
638 | || sym->as->type != AS_EXPLICIT | |
639 | || sym->attr.pointer | |
640 | || sym->attr.allocatable) | |
641 | && !DECL_ARTIFICIAL (decl)) | |
6de9cd9a | 642 | TREE_STATIC (decl) = 1; |
6c7a4dfd JJ |
643 | |
644 | /* Handle threadprivate variables. */ | |
8893239d | 645 | if (sym->attr.threadprivate |
6c7a4dfd | 646 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) |
56363ffd | 647 | set_decl_tls_model (decl, decl_default_tls_model (decl)); |
92d28cbb JJ |
648 | |
649 | gfc_finish_decl_attrs (decl, &sym->attr); | |
6de9cd9a DN |
650 | } |
651 | ||
652 | ||
653 | /* Allocate the lang-specific part of a decl. */ | |
654 | ||
655 | void | |
656 | gfc_allocate_lang_decl (tree decl) | |
657 | { | |
92d28cbb JJ |
658 | if (DECL_LANG_SPECIFIC (decl) == NULL) |
659 | DECL_LANG_SPECIFIC (decl) = ggc_cleared_alloc<struct lang_decl> (); | |
6de9cd9a DN |
660 | } |
661 | ||
662 | /* Remember a symbol to generate initialization/cleanup code at function | |
663 | entry/exit. */ | |
664 | ||
665 | static void | |
666 | gfc_defer_symbol_init (gfc_symbol * sym) | |
667 | { | |
668 | gfc_symbol *p; | |
669 | gfc_symbol *last; | |
670 | gfc_symbol *head; | |
671 | ||
672 | /* Don't add a symbol twice. */ | |
673 | if (sym->tlink) | |
674 | return; | |
675 | ||
676 | last = head = sym->ns->proc_name; | |
677 | p = last->tlink; | |
678 | ||
679 | /* Make sure that setup code for dummy variables which are used in the | |
680 | setup of other variables is generated first. */ | |
681 | if (sym->attr.dummy) | |
682 | { | |
683 | /* Find the first dummy arg seen after us, or the first non-dummy arg. | |
684 | This is a circular list, so don't go past the head. */ | |
685 | while (p != head | |
686 | && (!p->attr.dummy || p->dummy_order > sym->dummy_order)) | |
687 | { | |
688 | last = p; | |
689 | p = p->tlink; | |
690 | } | |
691 | } | |
692 | /* Insert in between last and p. */ | |
693 | last->tlink = sym; | |
694 | sym->tlink = p; | |
695 | } | |
696 | ||
697 | ||
0101807c PT |
698 | /* Used in gfc_get_symbol_decl and gfc_get_derived_type to obtain the |
699 | backend_decl for a module symbol, if it all ready exists. If the | |
700 | module gsymbol does not exist, it is created. If the symbol does | |
701 | not exist, it is added to the gsymbol namespace. Returns true if | |
702 | an existing backend_decl is found. */ | |
703 | ||
704 | bool | |
705 | gfc_get_module_backend_decl (gfc_symbol *sym) | |
706 | { | |
707 | gfc_gsymbol *gsym; | |
708 | gfc_symbol *s; | |
709 | gfc_symtree *st; | |
710 | ||
711 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
712 | ||
713 | if (!gsym || (gsym->ns && gsym->type == GSYM_MODULE)) | |
714 | { | |
715 | st = NULL; | |
716 | s = NULL; | |
717 | ||
718 | if (gsym) | |
719 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
720 | ||
721 | if (!s) | |
722 | { | |
723 | if (!gsym) | |
724 | { | |
725 | gsym = gfc_get_gsymbol (sym->module); | |
726 | gsym->type = GSYM_MODULE; | |
727 | gsym->ns = gfc_get_namespace (NULL, 0); | |
728 | } | |
729 | ||
730 | st = gfc_new_symtree (&gsym->ns->sym_root, sym->name); | |
731 | st->n.sym = sym; | |
732 | sym->refs++; | |
733 | } | |
734 | else if (sym->attr.flavor == FL_DERIVED) | |
735 | { | |
c3f34952 TB |
736 | if (s && s->attr.flavor == FL_PROCEDURE) |
737 | { | |
738 | gfc_interface *intr; | |
739 | gcc_assert (s->attr.generic); | |
740 | for (intr = s->generic; intr; intr = intr->next) | |
741 | if (intr->sym->attr.flavor == FL_DERIVED) | |
742 | { | |
743 | s = intr->sym; | |
744 | break; | |
745 | } | |
746 | } | |
747 | ||
0101807c PT |
748 | if (!s->backend_decl) |
749 | s->backend_decl = gfc_get_derived_type (s); | |
750 | gfc_copy_dt_decls_ifequal (s, sym, true); | |
751 | return true; | |
752 | } | |
753 | else if (s->backend_decl) | |
754 | { | |
f29bda83 | 755 | if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) |
0101807c PT |
756 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, |
757 | true); | |
758 | else if (sym->ts.type == BT_CHARACTER) | |
759 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
760 | sym->backend_decl = s->backend_decl; | |
761 | return true; | |
762 | } | |
763 | } | |
764 | return false; | |
765 | } | |
766 | ||
767 | ||
6de9cd9a DN |
768 | /* Create an array index type variable with function scope. */ |
769 | ||
770 | static tree | |
771 | create_index_var (const char * pfx, int nest) | |
772 | { | |
773 | tree decl; | |
774 | ||
775 | decl = gfc_create_var_np (gfc_array_index_type, pfx); | |
776 | if (nest) | |
777 | gfc_add_decl_to_parent_function (decl); | |
778 | else | |
779 | gfc_add_decl_to_function (decl); | |
780 | return decl; | |
781 | } | |
782 | ||
783 | ||
784 | /* Create variables to hold all the non-constant bits of info for a | |
785 | descriptorless array. Remember these in the lang-specific part of the | |
786 | type. */ | |
787 | ||
788 | static void | |
789 | gfc_build_qualified_array (tree decl, gfc_symbol * sym) | |
790 | { | |
791 | tree type; | |
792 | int dim; | |
793 | int nest; | |
52bf62f9 | 794 | gfc_namespace* procns; |
6de9cd9a DN |
795 | |
796 | type = TREE_TYPE (decl); | |
797 | ||
798 | /* We just use the descriptor, if there is one. */ | |
799 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
800 | return; | |
801 | ||
6e45f57b | 802 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
52bf62f9 DK |
803 | procns = gfc_find_proc_namespace (sym->ns); |
804 | nest = (procns->proc_name->backend_decl != current_function_decl) | |
6de9cd9a DN |
805 | && !sym->attr.contained; |
806 | ||
b8ff4e88 | 807 | if (sym->attr.codimension && gfc_option.coarray == GFC_FCOARRAY_LIB |
aa13dc3c | 808 | && sym->as->type != AS_ASSUMED_SHAPE |
b8ff4e88 TB |
809 | && GFC_TYPE_ARRAY_CAF_TOKEN (type) == NULL_TREE) |
810 | { | |
811 | tree token; | |
812 | ||
15e2b595 TB |
813 | token = gfc_create_var_np (build_qualified_type (pvoid_type_node, |
814 | TYPE_QUAL_RESTRICT), | |
815 | "caf_token"); | |
b8ff4e88 TB |
816 | GFC_TYPE_ARRAY_CAF_TOKEN (type) = token; |
817 | DECL_ARTIFICIAL (token) = 1; | |
818 | TREE_STATIC (token) = 1; | |
819 | gfc_add_decl_to_function (token); | |
820 | } | |
821 | ||
6de9cd9a DN |
822 | for (dim = 0; dim < GFC_TYPE_ARRAY_RANK (type); dim++) |
823 | { | |
824 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
01306727 FXC |
825 | { |
826 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
827 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
828 | } | |
aa9c57ec | 829 | /* Don't try to use the unknown bound for assumed shape arrays. */ |
6de9cd9a DN |
830 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE |
831 | && (sym->as->type != AS_ASSUMED_SIZE | |
832 | || dim < GFC_TYPE_ARRAY_RANK (type) - 1)) | |
01306727 FXC |
833 | { |
834 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
835 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
836 | } | |
6de9cd9a DN |
837 | |
838 | if (GFC_TYPE_ARRAY_STRIDE (type, dim) == NULL_TREE) | |
01306727 FXC |
839 | { |
840 | GFC_TYPE_ARRAY_STRIDE (type, dim) = create_index_var ("stride", nest); | |
841 | TREE_NO_WARNING (GFC_TYPE_ARRAY_STRIDE (type, dim)) = 1; | |
842 | } | |
6de9cd9a | 843 | } |
a3935ffc TB |
844 | for (dim = GFC_TYPE_ARRAY_RANK (type); |
845 | dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type); dim++) | |
846 | { | |
847 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
848 | { | |
849 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
850 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
851 | } | |
852 | /* Don't try to use the unknown ubound for the last coarray dimension. */ | |
853 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE | |
854 | && dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type) - 1) | |
855 | { | |
856 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
857 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
858 | } | |
859 | } | |
6de9cd9a DN |
860 | if (GFC_TYPE_ARRAY_OFFSET (type) == NULL_TREE) |
861 | { | |
862 | GFC_TYPE_ARRAY_OFFSET (type) = gfc_create_var_np (gfc_array_index_type, | |
863 | "offset"); | |
01306727 FXC |
864 | TREE_NO_WARNING (GFC_TYPE_ARRAY_OFFSET (type)) = 1; |
865 | ||
6de9cd9a DN |
866 | if (nest) |
867 | gfc_add_decl_to_parent_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
868 | else | |
869 | gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
870 | } | |
417ab240 JJ |
871 | |
872 | if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE | |
873 | && sym->as->type != AS_ASSUMED_SIZE) | |
01306727 FXC |
874 | { |
875 | GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest); | |
876 | TREE_NO_WARNING (GFC_TYPE_ARRAY_SIZE (type)) = 1; | |
877 | } | |
417ab240 JJ |
878 | |
879 | if (POINTER_TYPE_P (type)) | |
880 | { | |
881 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type))); | |
882 | gcc_assert (TYPE_LANG_SPECIFIC (type) | |
883 | == TYPE_LANG_SPECIFIC (TREE_TYPE (type))); | |
884 | type = TREE_TYPE (type); | |
885 | } | |
886 | ||
887 | if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type)) | |
888 | { | |
889 | tree size, range; | |
890 | ||
bc98ed60 TB |
891 | size = fold_build2_loc (input_location, MINUS_EXPR, gfc_array_index_type, |
892 | GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node); | |
417ab240 JJ |
893 | range = build_range_type (gfc_array_index_type, gfc_index_zero_node, |
894 | size); | |
895 | TYPE_DOMAIN (type) = range; | |
896 | layout_type (type); | |
897 | } | |
25c29c56 | 898 | |
25c29c56 JJ |
899 | if (TYPE_NAME (type) != NULL_TREE |
900 | && GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1) != NULL_TREE | |
901 | && TREE_CODE (GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1)) == VAR_DECL) | |
902 | { | |
903 | tree gtype = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
904 | ||
905 | for (dim = 0; dim < sym->as->rank - 1; dim++) | |
906 | { | |
907 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
908 | gtype = TREE_TYPE (gtype); | |
909 | } | |
910 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
911 | if (TYPE_MAX_VALUE (TYPE_DOMAIN (gtype)) == NULL) | |
912 | TYPE_NAME (type) = NULL_TREE; | |
913 | } | |
914 | ||
915 | if (TYPE_NAME (type) == NULL_TREE) | |
916 | { | |
917 | tree gtype = TREE_TYPE (type), rtype, type_decl; | |
918 | ||
919 | for (dim = sym->as->rank - 1; dim >= 0; dim--) | |
920 | { | |
fcd3c5a9 JJ |
921 | tree lbound, ubound; |
922 | lbound = GFC_TYPE_ARRAY_LBOUND (type, dim); | |
923 | ubound = GFC_TYPE_ARRAY_UBOUND (type, dim); | |
924 | rtype = build_range_type (gfc_array_index_type, lbound, ubound); | |
25c29c56 | 925 | gtype = build_array_type (gtype, rtype); |
e429bb49 JJ |
926 | /* Ensure the bound variables aren't optimized out at -O0. |
927 | For -O1 and above they often will be optimized out, but | |
cd3f04c8 JJ |
928 | can be tracked by VTA. Also set DECL_NAMELESS, so that |
929 | the artificial lbound.N or ubound.N DECL_NAME doesn't | |
930 | end up in debug info. */ | |
fcd3c5a9 JJ |
931 | if (lbound && TREE_CODE (lbound) == VAR_DECL |
932 | && DECL_ARTIFICIAL (lbound) && DECL_IGNORED_P (lbound)) | |
933 | { | |
934 | if (DECL_NAME (lbound) | |
935 | && strstr (IDENTIFIER_POINTER (DECL_NAME (lbound)), | |
936 | "lbound") != 0) | |
cd3f04c8 | 937 | DECL_NAMELESS (lbound) = 1; |
fcd3c5a9 JJ |
938 | DECL_IGNORED_P (lbound) = 0; |
939 | } | |
940 | if (ubound && TREE_CODE (ubound) == VAR_DECL | |
941 | && DECL_ARTIFICIAL (ubound) && DECL_IGNORED_P (ubound)) | |
942 | { | |
943 | if (DECL_NAME (ubound) | |
944 | && strstr (IDENTIFIER_POINTER (DECL_NAME (ubound)), | |
945 | "ubound") != 0) | |
cd3f04c8 | 946 | DECL_NAMELESS (ubound) = 1; |
fcd3c5a9 JJ |
947 | DECL_IGNORED_P (ubound) = 0; |
948 | } | |
25c29c56 | 949 | } |
c2255bc4 AH |
950 | TYPE_NAME (type) = type_decl = build_decl (input_location, |
951 | TYPE_DECL, NULL, gtype); | |
25c29c56 JJ |
952 | DECL_ORIGINAL_TYPE (type_decl) = gtype; |
953 | } | |
6de9cd9a DN |
954 | } |
955 | ||
956 | ||
957 | /* For some dummy arguments we don't use the actual argument directly. | |
bae88af6 | 958 | Instead we create a local decl and use that. This allows us to perform |
6de9cd9a DN |
959 | initialization, and construct full type information. */ |
960 | ||
961 | static tree | |
962 | gfc_build_dummy_array_decl (gfc_symbol * sym, tree dummy) | |
963 | { | |
964 | tree decl; | |
965 | tree type; | |
966 | gfc_array_spec *as; | |
967 | char *name; | |
dcfef7d4 | 968 | gfc_packed packed; |
6de9cd9a DN |
969 | int n; |
970 | bool known_size; | |
971 | ||
c62c6622 TB |
972 | if (sym->attr.pointer || sym->attr.allocatable |
973 | || (sym->as && sym->as->type == AS_ASSUMED_RANK)) | |
6de9cd9a DN |
974 | return dummy; |
975 | ||
976 | /* Add to list of variables if not a fake result variable. */ | |
977 | if (sym->attr.result || sym->attr.dummy) | |
978 | gfc_defer_symbol_init (sym); | |
979 | ||
980 | type = TREE_TYPE (dummy); | |
6e45f57b | 981 | gcc_assert (TREE_CODE (dummy) == PARM_DECL |
6de9cd9a DN |
982 | && POINTER_TYPE_P (type)); |
983 | ||
f8d0aee5 | 984 | /* Do we know the element size? */ |
6de9cd9a | 985 | known_size = sym->ts.type != BT_CHARACTER |
bc21d315 | 986 | || INTEGER_CST_P (sym->ts.u.cl->backend_decl); |
8b704316 | 987 | |
6de9cd9a DN |
988 | if (known_size && !GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (type))) |
989 | { | |
990 | /* For descriptorless arrays with known element size the actual | |
991 | argument is sufficient. */ | |
6e45f57b | 992 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
6de9cd9a DN |
993 | gfc_build_qualified_array (dummy, sym); |
994 | return dummy; | |
995 | } | |
996 | ||
997 | type = TREE_TYPE (type); | |
998 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
999 | { | |
fa951694 | 1000 | /* Create a descriptorless array pointer. */ |
6de9cd9a | 1001 | as = sym->as; |
dcfef7d4 | 1002 | packed = PACKED_NO; |
1c3339af FXC |
1003 | |
1004 | /* Even when -frepack-arrays is used, symbols with TARGET attribute | |
1005 | are not repacked. */ | |
1006 | if (!gfc_option.flag_repack_arrays || sym->attr.target) | |
6de9cd9a DN |
1007 | { |
1008 | if (as->type == AS_ASSUMED_SIZE) | |
dcfef7d4 | 1009 | packed = PACKED_FULL; |
6de9cd9a DN |
1010 | } |
1011 | else | |
1012 | { | |
1013 | if (as->type == AS_EXPLICIT) | |
1014 | { | |
dcfef7d4 | 1015 | packed = PACKED_FULL; |
6de9cd9a DN |
1016 | for (n = 0; n < as->rank; n++) |
1017 | { | |
1018 | if (!(as->upper[n] | |
1019 | && as->lower[n] | |
1020 | && as->upper[n]->expr_type == EXPR_CONSTANT | |
1021 | && as->lower[n]->expr_type == EXPR_CONSTANT)) | |
ae382ebd PCC |
1022 | { |
1023 | packed = PACKED_PARTIAL; | |
1024 | break; | |
1025 | } | |
6de9cd9a DN |
1026 | } |
1027 | } | |
1028 | else | |
dcfef7d4 | 1029 | packed = PACKED_PARTIAL; |
6de9cd9a DN |
1030 | } |
1031 | ||
1032 | type = gfc_typenode_for_spec (&sym->ts); | |
10174ddf MM |
1033 | type = gfc_get_nodesc_array_type (type, sym->as, packed, |
1034 | !sym->attr.target); | |
6de9cd9a DN |
1035 | } |
1036 | else | |
1037 | { | |
1038 | /* We now have an expression for the element size, so create a fully | |
1039 | qualified type. Reset sym->backend decl or this will just return the | |
1040 | old type. */ | |
3e978d30 | 1041 | DECL_ARTIFICIAL (sym->backend_decl) = 1; |
6de9cd9a DN |
1042 | sym->backend_decl = NULL_TREE; |
1043 | type = gfc_sym_type (sym); | |
dcfef7d4 | 1044 | packed = PACKED_FULL; |
6de9cd9a DN |
1045 | } |
1046 | ||
1047 | ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0); | |
c2255bc4 AH |
1048 | decl = build_decl (input_location, |
1049 | VAR_DECL, get_identifier (name), type); | |
6de9cd9a DN |
1050 | |
1051 | DECL_ARTIFICIAL (decl) = 1; | |
cd3f04c8 | 1052 | DECL_NAMELESS (decl) = 1; |
6de9cd9a DN |
1053 | TREE_PUBLIC (decl) = 0; |
1054 | TREE_STATIC (decl) = 0; | |
1055 | DECL_EXTERNAL (decl) = 0; | |
1056 | ||
879287d9 JJ |
1057 | /* Avoid uninitialized warnings for optional dummy arguments. */ |
1058 | if (sym->attr.optional) | |
1059 | TREE_NO_WARNING (decl) = 1; | |
1060 | ||
6de9cd9a DN |
1061 | /* We should never get deferred shape arrays here. We used to because of |
1062 | frontend bugs. */ | |
6e45f57b | 1063 | gcc_assert (sym->as->type != AS_DEFERRED); |
6de9cd9a | 1064 | |
dcfef7d4 TS |
1065 | if (packed == PACKED_PARTIAL) |
1066 | GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1; | |
1067 | else if (packed == PACKED_FULL) | |
1068 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
6de9cd9a DN |
1069 | |
1070 | gfc_build_qualified_array (decl, sym); | |
1071 | ||
1072 | if (DECL_LANG_SPECIFIC (dummy)) | |
1073 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (dummy); | |
1074 | else | |
1075 | gfc_allocate_lang_decl (decl); | |
1076 | ||
1077 | GFC_DECL_SAVED_DESCRIPTOR (decl) = dummy; | |
1078 | ||
1079 | if (sym->ns->proc_name->backend_decl == current_function_decl | |
1080 | || sym->attr.contained) | |
1081 | gfc_add_decl_to_function (decl); | |
1082 | else | |
1083 | gfc_add_decl_to_parent_function (decl); | |
1084 | ||
1085 | return decl; | |
1086 | } | |
1087 | ||
77f2a970 JJ |
1088 | /* For symbol SYM with GFC_DECL_SAVED_DESCRIPTOR used in contained |
1089 | function add a VAR_DECL to the current function with DECL_VALUE_EXPR | |
1090 | pointing to the artificial variable for debug info purposes. */ | |
1091 | ||
1092 | static void | |
1093 | gfc_nonlocal_dummy_array_decl (gfc_symbol *sym) | |
1094 | { | |
1095 | tree decl, dummy; | |
1096 | ||
1097 | if (! nonlocal_dummy_decl_pset) | |
6e2830c3 | 1098 | nonlocal_dummy_decl_pset = new hash_set<tree>; |
77f2a970 | 1099 | |
6e2830c3 | 1100 | if (nonlocal_dummy_decl_pset->add (sym->backend_decl)) |
77f2a970 JJ |
1101 | return; |
1102 | ||
1103 | dummy = GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl); | |
c2255bc4 | 1104 | decl = build_decl (input_location, VAR_DECL, DECL_NAME (dummy), |
77f2a970 JJ |
1105 | TREE_TYPE (sym->backend_decl)); |
1106 | DECL_ARTIFICIAL (decl) = 0; | |
1107 | TREE_USED (decl) = 1; | |
1108 | TREE_PUBLIC (decl) = 0; | |
1109 | TREE_STATIC (decl) = 0; | |
1110 | DECL_EXTERNAL (decl) = 0; | |
1111 | if (DECL_BY_REFERENCE (dummy)) | |
1112 | DECL_BY_REFERENCE (decl) = 1; | |
1113 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (sym->backend_decl); | |
1114 | SET_DECL_VALUE_EXPR (decl, sym->backend_decl); | |
1115 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
1116 | DECL_CONTEXT (decl) = DECL_CONTEXT (sym->backend_decl); | |
910ad8de | 1117 | DECL_CHAIN (decl) = nonlocal_dummy_decls; |
77f2a970 JJ |
1118 | nonlocal_dummy_decls = decl; |
1119 | } | |
6de9cd9a DN |
1120 | |
1121 | /* Return a constant or a variable to use as a string length. Does not | |
1122 | add the decl to the current scope. */ | |
1123 | ||
1124 | static tree | |
1125 | gfc_create_string_length (gfc_symbol * sym) | |
1126 | { | |
bc21d315 JW |
1127 | gcc_assert (sym->ts.u.cl); |
1128 | gfc_conv_const_charlen (sym->ts.u.cl); | |
cadb8f42 | 1129 | |
bc21d315 | 1130 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
6de9cd9a | 1131 | { |
cadb8f42 | 1132 | tree length; |
6052c299 | 1133 | const char *name; |
6de9cd9a | 1134 | |
26c08c03 TB |
1135 | /* The string length variable shall be in static memory if it is either |
1136 | explicitly SAVED, a module variable or with -fno-automatic. Only | |
1137 | relevant is "len=:" - otherwise, it is either a constant length or | |
1138 | it is an automatic variable. */ | |
36085529 TB |
1139 | bool static_length = sym->attr.save |
1140 | || sym->ns->proc_name->attr.flavor == FL_MODULE | |
26c08c03 TB |
1141 | || (gfc_option.flag_max_stack_var_size == 0 |
1142 | && sym->ts.deferred && !sym->attr.dummy | |
1143 | && !sym->attr.result && !sym->attr.function); | |
36085529 TB |
1144 | |
1145 | /* Also prefix the mangled name. We need to call GFC_PREFIX for static | |
1146 | variables as some systems do not support the "." in the assembler name. | |
1147 | For nonstatic variables, the "." does not appear in assembler. */ | |
1148 | if (static_length) | |
1149 | { | |
1150 | if (sym->module) | |
1151 | name = gfc_get_string (GFC_PREFIX ("%s_MOD_%s"), sym->module, | |
1152 | sym->name); | |
1153 | else | |
1154 | name = gfc_get_string (GFC_PREFIX ("%s"), sym->name); | |
1155 | } | |
1156 | else if (sym->module) | |
6052c299 TB |
1157 | name = gfc_get_string (".__%s_MOD_%s", sym->module, sym->name); |
1158 | else | |
1159 | name = gfc_get_string (".%s", sym->name); | |
1160 | ||
c2255bc4 AH |
1161 | length = build_decl (input_location, |
1162 | VAR_DECL, get_identifier (name), | |
d7177ab2 | 1163 | gfc_charlen_type_node); |
6de9cd9a DN |
1164 | DECL_ARTIFICIAL (length) = 1; |
1165 | TREE_USED (length) = 1; | |
417ab240 JJ |
1166 | if (sym->ns->proc_name->tlink != NULL) |
1167 | gfc_defer_symbol_init (sym); | |
cadb8f42 | 1168 | |
bc21d315 | 1169 | sym->ts.u.cl->backend_decl = length; |
6052c299 | 1170 | |
36085529 | 1171 | if (static_length) |
6052c299 TB |
1172 | TREE_STATIC (length) = 1; |
1173 | ||
1174 | if (sym->ns->proc_name->attr.flavor == FL_MODULE | |
1175 | && (sym->attr.access != ACCESS_PRIVATE || sym->attr.public_used)) | |
1176 | TREE_PUBLIC (length) = 1; | |
6de9cd9a DN |
1177 | } |
1178 | ||
bc21d315 JW |
1179 | gcc_assert (sym->ts.u.cl->backend_decl != NULL_TREE); |
1180 | return sym->ts.u.cl->backend_decl; | |
6de9cd9a DN |
1181 | } |
1182 | ||
910450c1 FW |
1183 | /* If a variable is assigned a label, we add another two auxiliary |
1184 | variables. */ | |
1185 | ||
1186 | static void | |
1187 | gfc_add_assign_aux_vars (gfc_symbol * sym) | |
1188 | { | |
1189 | tree addr; | |
1190 | tree length; | |
1191 | tree decl; | |
1192 | ||
1193 | gcc_assert (sym->backend_decl); | |
1194 | ||
1195 | decl = sym->backend_decl; | |
1196 | gfc_allocate_lang_decl (decl); | |
1197 | GFC_DECL_ASSIGN (decl) = 1; | |
c2255bc4 AH |
1198 | length = build_decl (input_location, |
1199 | VAR_DECL, create_tmp_var_name (sym->name), | |
910450c1 | 1200 | gfc_charlen_type_node); |
c2255bc4 AH |
1201 | addr = build_decl (input_location, |
1202 | VAR_DECL, create_tmp_var_name (sym->name), | |
910450c1 FW |
1203 | pvoid_type_node); |
1204 | gfc_finish_var_decl (length, sym); | |
1205 | gfc_finish_var_decl (addr, sym); | |
1206 | /* STRING_LENGTH is also used as flag. Less than -1 means that | |
1207 | ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the | |
1208 | target label's address. Otherwise, value is the length of a format string | |
1209 | and ASSIGN_ADDR is its address. */ | |
1210 | if (TREE_STATIC (length)) | |
df09d1d5 | 1211 | DECL_INITIAL (length) = build_int_cst (gfc_charlen_type_node, -2); |
910450c1 FW |
1212 | else |
1213 | gfc_defer_symbol_init (sym); | |
1214 | ||
1215 | GFC_DECL_STRING_LEN (decl) = length; | |
1216 | GFC_DECL_ASSIGN_ADDR (decl) = addr; | |
1217 | } | |
6de9cd9a | 1218 | |
08a6b8e0 TB |
1219 | |
1220 | static tree | |
1221 | add_attributes_to_decl (symbol_attribute sym_attr, tree list) | |
1222 | { | |
1223 | unsigned id; | |
1224 | tree attr; | |
1225 | ||
1226 | for (id = 0; id < EXT_ATTR_NUM; id++) | |
1227 | if (sym_attr.ext_attr & (1 << id)) | |
1228 | { | |
1229 | attr = build_tree_list ( | |
1230 | get_identifier (ext_attr_list[id].middle_end_name), | |
1231 | NULL_TREE); | |
1232 | list = chainon (list, attr); | |
1233 | } | |
1234 | ||
f014c653 JJ |
1235 | if (sym_attr.omp_declare_target) |
1236 | list = tree_cons (get_identifier ("omp declare target"), | |
1237 | NULL_TREE, list); | |
1238 | ||
08a6b8e0 TB |
1239 | return list; |
1240 | } | |
1241 | ||
1242 | ||
1d0134b3 JW |
1243 | static void build_function_decl (gfc_symbol * sym, bool global); |
1244 | ||
1245 | ||
6de9cd9a DN |
1246 | /* Return the decl for a gfc_symbol, create it if it doesn't already |
1247 | exist. */ | |
1248 | ||
1249 | tree | |
1250 | gfc_get_symbol_decl (gfc_symbol * sym) | |
1251 | { | |
1252 | tree decl; | |
1253 | tree length = NULL_TREE; | |
08a6b8e0 | 1254 | tree attributes; |
6de9cd9a | 1255 | int byref; |
be1f1ed9 | 1256 | bool intrinsic_array_parameter = false; |
431e4685 | 1257 | bool fun_or_res; |
6de9cd9a | 1258 | |
61321991 | 1259 | gcc_assert (sym->attr.referenced |
29be7510 JW |
1260 | || sym->attr.flavor == FL_PROCEDURE |
1261 | || sym->attr.use_assoc | |
1262 | || sym->ns->proc_name->attr.if_source == IFSRC_IFBODY | |
1263 | || (sym->module && sym->attr.if_source != IFSRC_DECL | |
1264 | && sym->backend_decl)); | |
6de9cd9a | 1265 | |
f64edc8b | 1266 | if (sym->ns && sym->ns->proc_name && sym->ns->proc_name->attr.function) |
6de9cd9a DN |
1267 | byref = gfc_return_by_reference (sym->ns->proc_name); |
1268 | else | |
1269 | byref = 0; | |
1270 | ||
eece1eb9 PT |
1271 | /* Make sure that the vtab for the declared type is completed. */ |
1272 | if (sym->ts.type == BT_CLASS) | |
1273 | { | |
7a08eda1 | 1274 | gfc_component *c = CLASS_DATA (sym); |
eece1eb9 | 1275 | if (!c->ts.u.derived->backend_decl) |
58eba515 JW |
1276 | { |
1277 | gfc_find_derived_vtab (c->ts.u.derived); | |
1278 | gfc_get_derived_type (sym->ts.u.derived); | |
1279 | } | |
eece1eb9 PT |
1280 | } |
1281 | ||
8d51f26f PT |
1282 | /* All deferred character length procedures need to retain the backend |
1283 | decl, which is a pointer to the character length in the caller's | |
1284 | namespace and to declare a local character length. */ | |
1285 | if (!byref && sym->attr.function | |
1286 | && sym->ts.type == BT_CHARACTER | |
1287 | && sym->ts.deferred | |
1288 | && sym->ts.u.cl->passed_length == NULL | |
1289 | && sym->ts.u.cl->backend_decl | |
1290 | && TREE_CODE (sym->ts.u.cl->backend_decl) == PARM_DECL) | |
1291 | { | |
1292 | sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1293 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1294 | length = gfc_create_string_length (sym); | |
1295 | } | |
1296 | ||
431e4685 TB |
1297 | fun_or_res = byref && (sym->attr.result |
1298 | || (sym->attr.function && sym->ts.deferred)); | |
1299 | if ((sym->attr.dummy && ! sym->attr.function) || fun_or_res) | |
6de9cd9a DN |
1300 | { |
1301 | /* Return via extra parameter. */ | |
1302 | if (sym->attr.result && byref | |
1303 | && !sym->backend_decl) | |
1304 | { | |
1305 | sym->backend_decl = | |
1306 | DECL_ARGUMENTS (sym->ns->proc_name->backend_decl); | |
d198b59a JJ |
1307 | /* For entry master function skip over the __entry |
1308 | argument. */ | |
1309 | if (sym->ns->proc_name->attr.entry_master) | |
910ad8de | 1310 | sym->backend_decl = DECL_CHAIN (sym->backend_decl); |
6de9cd9a DN |
1311 | } |
1312 | ||
1313 | /* Dummy variables should already have been created. */ | |
6e45f57b | 1314 | gcc_assert (sym->backend_decl); |
6de9cd9a DN |
1315 | |
1316 | /* Create a character length variable. */ | |
1317 | if (sym->ts.type == BT_CHARACTER) | |
1318 | { | |
8d51f26f PT |
1319 | /* For a deferred dummy, make a new string length variable. */ |
1320 | if (sym->ts.deferred | |
1321 | && | |
1322 | (sym->ts.u.cl->passed_length == sym->ts.u.cl->backend_decl)) | |
1323 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1324 | ||
431e4685 | 1325 | if (sym->ts.deferred && fun_or_res |
8d51f26f PT |
1326 | && sym->ts.u.cl->passed_length == NULL |
1327 | && sym->ts.u.cl->backend_decl) | |
1328 | { | |
1329 | sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1330 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1331 | } | |
1332 | ||
bc21d315 | 1333 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
417ab240 JJ |
1334 | length = gfc_create_string_length (sym); |
1335 | else | |
bc21d315 | 1336 | length = sym->ts.u.cl->backend_decl; |
417ab240 | 1337 | if (TREE_CODE (length) == VAR_DECL |
e5b16755 | 1338 | && DECL_FILE_SCOPE_P (length)) |
6de9cd9a | 1339 | { |
3e978d30 PT |
1340 | /* Add the string length to the same context as the symbol. */ |
1341 | if (DECL_CONTEXT (sym->backend_decl) == current_function_decl) | |
1342 | gfc_add_decl_to_function (length); | |
1343 | else | |
1344 | gfc_add_decl_to_parent_function (length); | |
1345 | ||
1346 | gcc_assert (DECL_CONTEXT (sym->backend_decl) == | |
1347 | DECL_CONTEXT (length)); | |
1348 | ||
417ab240 | 1349 | gfc_defer_symbol_init (sym); |
a41baa64 | 1350 | } |
6de9cd9a DN |
1351 | } |
1352 | ||
1353 | /* Use a copy of the descriptor for dummy arrays. */ | |
4ca9939b TB |
1354 | if ((sym->attr.dimension || sym->attr.codimension) |
1355 | && !TREE_USED (sym->backend_decl)) | |
6de9cd9a | 1356 | { |
3e978d30 PT |
1357 | decl = gfc_build_dummy_array_decl (sym, sym->backend_decl); |
1358 | /* Prevent the dummy from being detected as unused if it is copied. */ | |
1359 | if (sym->backend_decl != NULL && decl != sym->backend_decl) | |
1360 | DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
1361 | sym->backend_decl = decl; | |
6de9cd9a DN |
1362 | } |
1363 | ||
1364 | TREE_USED (sym->backend_decl) = 1; | |
910450c1 FW |
1365 | if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0) |
1366 | { | |
1367 | gfc_add_assign_aux_vars (sym); | |
1368 | } | |
77f2a970 JJ |
1369 | |
1370 | if (sym->attr.dimension | |
1371 | && DECL_LANG_SPECIFIC (sym->backend_decl) | |
1372 | && GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl) | |
1373 | && DECL_CONTEXT (sym->backend_decl) != current_function_decl) | |
1374 | gfc_nonlocal_dummy_array_decl (sym); | |
1375 | ||
c49ea23d PT |
1376 | if (sym->ts.type == BT_CLASS && sym->backend_decl) |
1377 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1378 | ||
1379 | if (sym->ts.type == BT_CLASS && sym->backend_decl) | |
1380 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1381 | return sym->backend_decl; | |
6de9cd9a DN |
1382 | } |
1383 | ||
1384 | if (sym->backend_decl) | |
1385 | return sym->backend_decl; | |
1386 | ||
4ed5664e TB |
1387 | /* Special case for array-valued named constants from intrinsic |
1388 | procedures; those are inlined. */ | |
8b198102 FXC |
1389 | if (sym->attr.use_assoc && sym->attr.flavor == FL_PARAMETER |
1390 | && (sym->from_intmod == INTMOD_ISO_FORTRAN_ENV | |
1391 | || sym->from_intmod == INTMOD_ISO_C_BINDING)) | |
4ed5664e TB |
1392 | intrinsic_array_parameter = true; |
1393 | ||
9fa52231 | 1394 | /* If use associated compilation, use the module |
43afc047 | 1395 | declaration. */ |
9fa52231 TB |
1396 | if ((sym->attr.flavor == FL_VARIABLE |
1397 | || sym->attr.flavor == FL_PARAMETER) | |
1398 | && sym->attr.use_assoc | |
1399 | && !intrinsic_array_parameter | |
1400 | && sym->module | |
1401 | && gfc_get_module_backend_decl (sym)) | |
c49ea23d PT |
1402 | { |
1403 | if (sym->ts.type == BT_CLASS && sym->backend_decl) | |
1404 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1405 | return sym->backend_decl; | |
1406 | } | |
3af8d8cb | 1407 | |
6de9cd9a DN |
1408 | if (sym->attr.flavor == FL_PROCEDURE) |
1409 | { | |
ab1668f6 | 1410 | /* Catch functions. Only used for actual parameters, |
1d0134b3 | 1411 | procedure pointers and procptr initialization targets. */ |
ab1668f6 TB |
1412 | if (sym->attr.use_assoc || sym->attr.intrinsic |
1413 | || sym->attr.if_source != IFSRC_DECL) | |
1d0134b3 JW |
1414 | { |
1415 | decl = gfc_get_extern_function_decl (sym); | |
1416 | gfc_set_decl_location (decl, &sym->declared_at); | |
1417 | } | |
1418 | else | |
1419 | { | |
1420 | if (!sym->backend_decl) | |
1421 | build_function_decl (sym, false); | |
1422 | decl = sym->backend_decl; | |
1423 | } | |
6de9cd9a DN |
1424 | return decl; |
1425 | } | |
1426 | ||
1427 | if (sym->attr.intrinsic) | |
1428 | internal_error ("intrinsic variable which isn't a procedure"); | |
1429 | ||
1430 | /* Create string length decl first so that they can be used in the | |
1431 | type declaration. */ | |
1432 | if (sym->ts.type == BT_CHARACTER) | |
1433 | length = gfc_create_string_length (sym); | |
1434 | ||
1435 | /* Create the decl for the variable. */ | |
c2255bc4 AH |
1436 | decl = build_decl (sym->declared_at.lb->location, |
1437 | VAR_DECL, gfc_sym_identifier (sym), gfc_sym_type (sym)); | |
c8cc8542 | 1438 | |
43ce5e52 FXC |
1439 | /* Add attributes to variables. Functions are handled elsewhere. */ |
1440 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); | |
1441 | decl_attributes (&decl, attributes, 0); | |
1442 | ||
f8d0aee5 | 1443 | /* Symbols from modules should have their assembler names mangled. |
6de9cd9a DN |
1444 | This is done here rather than in gfc_finish_var_decl because it |
1445 | is different for string length variables. */ | |
cb9e4f55 | 1446 | if (sym->module) |
a64f5186 | 1447 | { |
43ce5e52 | 1448 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); |
be1f1ed9 | 1449 | if (sym->attr.use_assoc && !intrinsic_array_parameter) |
a64f5186 JJ |
1450 | DECL_IGNORED_P (decl) = 1; |
1451 | } | |
6de9cd9a | 1452 | |
b3996898 JJ |
1453 | if (sym->attr.select_type_temporary) |
1454 | { | |
1455 | DECL_ARTIFICIAL (decl) = 1; | |
1456 | DECL_IGNORED_P (decl) = 1; | |
1457 | } | |
1458 | ||
4ca9939b | 1459 | if (sym->attr.dimension || sym->attr.codimension) |
6de9cd9a DN |
1460 | { |
1461 | /* Create variables to hold the non-constant bits of array info. */ | |
1462 | gfc_build_qualified_array (decl, sym); | |
1463 | ||
fe4e525c TB |
1464 | if (sym->attr.contiguous |
1465 | || ((sym->attr.allocatable || !sym->attr.dummy) && !sym->attr.pointer)) | |
6de9cd9a DN |
1466 | GFC_DECL_PACKED_ARRAY (decl) = 1; |
1467 | } | |
1468 | ||
1517fd57 | 1469 | /* Remember this variable for allocation/cleanup. */ |
9f3761c5 | 1470 | if (sym->attr.dimension || sym->attr.allocatable || sym->attr.codimension |
1517fd57 | 1471 | || (sym->ts.type == BT_CLASS && |
7a08eda1 JW |
1472 | (CLASS_DATA (sym)->attr.dimension |
1473 | || CLASS_DATA (sym)->attr.allocatable)) | |
ea8b72e6 TB |
1474 | || (sym->ts.type == BT_DERIVED |
1475 | && (sym->ts.u.derived->attr.alloc_comp | |
1476 | || (!sym->attr.pointer && !sym->attr.artificial && !sym->attr.save | |
1477 | && !sym->ns->proc_name->attr.is_main_program | |
1478 | && gfc_is_finalizable (sym->ts.u.derived, NULL)))) | |
1517fd57 JW |
1479 | /* This applies a derived type default initializer. */ |
1480 | || (sym->ts.type == BT_DERIVED | |
1481 | && sym->attr.save == SAVE_NONE | |
1482 | && !sym->attr.data | |
1483 | && !sym->attr.allocatable | |
1484 | && (sym->value && !sym->ns->proc_name->attr.is_main_program) | |
be1f1ed9 | 1485 | && !(sym->attr.use_assoc && !intrinsic_array_parameter))) |
b7b184a8 | 1486 | gfc_defer_symbol_init (sym); |
5046aff5 | 1487 | |
6de9cd9a DN |
1488 | gfc_finish_var_decl (decl, sym); |
1489 | ||
597073ac | 1490 | if (sym->ts.type == BT_CHARACTER) |
6de9cd9a | 1491 | { |
6de9cd9a DN |
1492 | /* Character variables need special handling. */ |
1493 | gfc_allocate_lang_decl (decl); | |
1494 | ||
597073ac | 1495 | if (TREE_CODE (length) != INTEGER_CST) |
6de9cd9a | 1496 | { |
6de9cd9a | 1497 | gfc_finish_var_decl (length, sym); |
6e45f57b | 1498 | gcc_assert (!sym->value); |
6de9cd9a | 1499 | } |
6de9cd9a | 1500 | } |
1d6b7f39 PT |
1501 | else if (sym->attr.subref_array_pointer) |
1502 | { | |
1503 | /* We need the span for these beasts. */ | |
1504 | gfc_allocate_lang_decl (decl); | |
1505 | } | |
1506 | ||
1507 | if (sym->attr.subref_array_pointer) | |
1508 | { | |
1509 | tree span; | |
1510 | GFC_DECL_SUBREF_ARRAY_P (decl) = 1; | |
c2255bc4 AH |
1511 | span = build_decl (input_location, |
1512 | VAR_DECL, create_tmp_var_name ("span"), | |
1d6b7f39 PT |
1513 | gfc_array_index_type); |
1514 | gfc_finish_var_decl (span, sym); | |
de870512 JJ |
1515 | TREE_STATIC (span) = TREE_STATIC (decl); |
1516 | DECL_ARTIFICIAL (span) = 1; | |
1d6b7f39 PT |
1517 | |
1518 | GFC_DECL_SPAN (decl) = span; | |
de870512 | 1519 | GFC_TYPE_ARRAY_SPAN (TREE_TYPE (decl)) = span; |
1d6b7f39 PT |
1520 | } |
1521 | ||
c49ea23d PT |
1522 | if (sym->ts.type == BT_CLASS) |
1523 | GFC_DECL_CLASS(decl) = 1; | |
1524 | ||
6de9cd9a DN |
1525 | sym->backend_decl = decl; |
1526 | ||
910450c1 | 1527 | if (sym->attr.assign) |
6c0e51c4 | 1528 | gfc_add_assign_aux_vars (sym); |
910450c1 | 1529 | |
be1f1ed9 TB |
1530 | if (intrinsic_array_parameter) |
1531 | { | |
1532 | TREE_STATIC (decl) = 1; | |
1533 | DECL_EXTERNAL (decl) = 0; | |
1534 | } | |
1535 | ||
1536 | if (TREE_STATIC (decl) | |
1537 | && !(sym->attr.use_assoc && !intrinsic_array_parameter) | |
2b56d6a4 TB |
1538 | && (sym->attr.save || sym->ns->proc_name->attr.is_main_program |
1539 | || gfc_option.flag_max_stack_var_size == 0 | |
b8ff4e88 | 1540 | || sym->attr.data || sym->ns->proc_name->attr.flavor == FL_MODULE) |
badd9e69 TB |
1541 | && (gfc_option.coarray != GFC_FCOARRAY_LIB |
1542 | || !sym->attr.codimension || sym->attr.allocatable)) | |
2b56d6a4 TB |
1543 | { |
1544 | /* Add static initializer. For procedures, it is only needed if | |
1545 | SAVE is specified otherwise they need to be reinitialized | |
1546 | every time the procedure is entered. The TREE_STATIC is | |
1547 | in this case due to -fmax-stack-var-size=. */ | |
2cc6320d | 1548 | |
597073ac | 1549 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
2cc6320d JW |
1550 | TREE_TYPE (decl), sym->attr.dimension |
1551 | || (sym->attr.codimension | |
1552 | && sym->attr.allocatable), | |
1553 | sym->attr.pointer || sym->attr.allocatable | |
1554 | || sym->ts.type == BT_CLASS, | |
1555 | sym->attr.proc_pointer); | |
597073ac PB |
1556 | } |
1557 | ||
77f2a970 JJ |
1558 | if (!TREE_STATIC (decl) |
1559 | && POINTER_TYPE_P (TREE_TYPE (decl)) | |
1560 | && !sym->attr.pointer | |
1561 | && !sym->attr.allocatable | |
b3996898 JJ |
1562 | && !sym->attr.proc_pointer |
1563 | && !sym->attr.select_type_temporary) | |
77f2a970 JJ |
1564 | DECL_BY_REFERENCE (decl) = 1; |
1565 | ||
92d28cbb JJ |
1566 | if (sym->attr.associate_var) |
1567 | GFC_DECL_ASSOCIATE_VAR_P (decl) = 1; | |
1568 | ||
cf651ca2 TB |
1569 | if (sym->attr.vtab |
1570 | || (sym->name[0] == '_' && strncmp ("__def_init", sym->name, 10) == 0)) | |
755634e6 | 1571 | TREE_READONLY (decl) = 1; |
cf651ca2 | 1572 | |
6de9cd9a DN |
1573 | return decl; |
1574 | } | |
1575 | ||
1576 | ||
7b5b57b7 PB |
1577 | /* Substitute a temporary variable in place of the real one. */ |
1578 | ||
1579 | void | |
1580 | gfc_shadow_sym (gfc_symbol * sym, tree decl, gfc_saved_var * save) | |
1581 | { | |
1582 | save->attr = sym->attr; | |
1583 | save->decl = sym->backend_decl; | |
1584 | ||
1585 | gfc_clear_attr (&sym->attr); | |
1586 | sym->attr.referenced = 1; | |
1587 | sym->attr.flavor = FL_VARIABLE; | |
1588 | ||
1589 | sym->backend_decl = decl; | |
1590 | } | |
1591 | ||
1592 | ||
1593 | /* Restore the original variable. */ | |
1594 | ||
1595 | void | |
1596 | gfc_restore_sym (gfc_symbol * sym, gfc_saved_var * save) | |
1597 | { | |
1598 | sym->attr = save->attr; | |
1599 | sym->backend_decl = save->decl; | |
1600 | } | |
1601 | ||
1602 | ||
8fb74da4 JW |
1603 | /* Declare a procedure pointer. */ |
1604 | ||
1605 | static tree | |
1606 | get_proc_pointer_decl (gfc_symbol *sym) | |
1607 | { | |
1608 | tree decl; | |
08a6b8e0 | 1609 | tree attributes; |
8fb74da4 JW |
1610 | |
1611 | decl = sym->backend_decl; | |
1612 | if (decl) | |
1613 | return decl; | |
1614 | ||
c2255bc4 AH |
1615 | decl = build_decl (input_location, |
1616 | VAR_DECL, get_identifier (sym->name), | |
8fb74da4 JW |
1617 | build_pointer_type (gfc_get_function_type (sym))); |
1618 | ||
5e4404b8 JW |
1619 | if (sym->module) |
1620 | { | |
1621 | /* Apply name mangling. */ | |
1622 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); | |
1623 | if (sym->attr.use_assoc) | |
1624 | DECL_IGNORED_P (decl) = 1; | |
1625 | } | |
8b704316 | 1626 | |
06c7153f TB |
1627 | if ((sym->ns->proc_name |
1628 | && sym->ns->proc_name->backend_decl == current_function_decl) | |
8fb74da4 JW |
1629 | || sym->attr.contained) |
1630 | gfc_add_decl_to_function (decl); | |
6e0d2de7 | 1631 | else if (sym->ns->proc_name->attr.flavor != FL_MODULE) |
8fb74da4 JW |
1632 | gfc_add_decl_to_parent_function (decl); |
1633 | ||
1634 | sym->backend_decl = decl; | |
1635 | ||
6e0d2de7 JW |
1636 | /* If a variable is USE associated, it's always external. */ |
1637 | if (sym->attr.use_assoc) | |
1638 | { | |
1639 | DECL_EXTERNAL (decl) = 1; | |
1640 | TREE_PUBLIC (decl) = 1; | |
1641 | } | |
1642 | else if (sym->module && sym->ns->proc_name->attr.flavor == FL_MODULE) | |
1643 | { | |
1644 | /* This is the declaration of a module variable. */ | |
1645 | TREE_PUBLIC (decl) = 1; | |
1646 | TREE_STATIC (decl) = 1; | |
1647 | } | |
1648 | ||
8fb74da4 JW |
1649 | if (!sym->attr.use_assoc |
1650 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
1651 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
1652 | TREE_STATIC (decl) = 1; | |
1653 | ||
1654 | if (TREE_STATIC (decl) && sym->value) | |
1655 | { | |
1656 | /* Add static initializer. */ | |
1657 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
1d0134b3 JW |
1658 | TREE_TYPE (decl), |
1659 | sym->attr.dimension, | |
1660 | false, true); | |
8fb74da4 JW |
1661 | } |
1662 | ||
a6c975bd JJ |
1663 | /* Handle threadprivate procedure pointers. */ |
1664 | if (sym->attr.threadprivate | |
1665 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) | |
56363ffd | 1666 | set_decl_tls_model (decl, decl_default_tls_model (decl)); |
a6c975bd | 1667 | |
08a6b8e0 TB |
1668 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1669 | decl_attributes (&decl, attributes, 0); | |
1670 | ||
8fb74da4 JW |
1671 | return decl; |
1672 | } | |
1673 | ||
1674 | ||
6de9cd9a DN |
1675 | /* Get a basic decl for an external function. */ |
1676 | ||
1677 | tree | |
1678 | gfc_get_extern_function_decl (gfc_symbol * sym) | |
1679 | { | |
1680 | tree type; | |
1681 | tree fndecl; | |
08a6b8e0 | 1682 | tree attributes; |
6de9cd9a DN |
1683 | gfc_expr e; |
1684 | gfc_intrinsic_sym *isym; | |
1685 | gfc_expr argexpr; | |
e6472bce | 1686 | char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */ |
6de9cd9a DN |
1687 | tree name; |
1688 | tree mangled_name; | |
71a7778c | 1689 | gfc_gsymbol *gsym; |
6de9cd9a DN |
1690 | |
1691 | if (sym->backend_decl) | |
1692 | return sym->backend_decl; | |
1693 | ||
3d79abbd PB |
1694 | /* We should never be creating external decls for alternate entry points. |
1695 | The procedure may be an alternate entry point, but we don't want/need | |
1696 | to know that. */ | |
6e45f57b | 1697 | gcc_assert (!(sym->attr.entry || sym->attr.entry_master)); |
3d79abbd | 1698 | |
8fb74da4 JW |
1699 | if (sym->attr.proc_pointer) |
1700 | return get_proc_pointer_decl (sym); | |
1701 | ||
71a7778c PT |
1702 | /* See if this is an external procedure from the same file. If so, |
1703 | return the backend_decl. */ | |
f11de7c5 TB |
1704 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->binding_label |
1705 | ? sym->binding_label : sym->name); | |
71a7778c | 1706 | |
77f8682b TB |
1707 | if (gsym && !gsym->defined) |
1708 | gsym = NULL; | |
1709 | ||
1710 | /* This can happen because of C binding. */ | |
1711 | if (gsym && gsym->ns && gsym->ns->proc_name | |
1712 | && gsym->ns->proc_name->attr.flavor == FL_MODULE) | |
1713 | goto module_sym; | |
1714 | ||
9fa52231 TB |
1715 | if ((!sym->attr.use_assoc || sym->attr.if_source != IFSRC_DECL) |
1716 | && !sym->backend_decl | |
1717 | && gsym && gsym->ns | |
1718 | && ((gsym->type == GSYM_SUBROUTINE) || (gsym->type == GSYM_FUNCTION)) | |
1719 | && (gsym->ns->proc_name->backend_decl || !sym->attr.intrinsic)) | |
71a7778c | 1720 | { |
fb55ca75 TB |
1721 | if (!gsym->ns->proc_name->backend_decl) |
1722 | { | |
1723 | /* By construction, the external function cannot be | |
1724 | a contained procedure. */ | |
1725 | locus old_loc; | |
fb55ca75 | 1726 | |
363aab21 | 1727 | gfc_save_backend_locus (&old_loc); |
af16bc76 | 1728 | push_cfun (NULL); |
fb55ca75 TB |
1729 | |
1730 | gfc_create_function_decl (gsym->ns, true); | |
1731 | ||
1732 | pop_cfun (); | |
363aab21 | 1733 | gfc_restore_backend_locus (&old_loc); |
fb55ca75 TB |
1734 | } |
1735 | ||
71a7778c PT |
1736 | /* If the namespace has entries, the proc_name is the |
1737 | entry master. Find the entry and use its backend_decl. | |
1738 | otherwise, use the proc_name backend_decl. */ | |
1739 | if (gsym->ns->entries) | |
1740 | { | |
1741 | gfc_entry_list *entry = gsym->ns->entries; | |
1742 | ||
1743 | for (; entry; entry = entry->next) | |
1744 | { | |
1745 | if (strcmp (gsym->name, entry->sym->name) == 0) | |
1746 | { | |
1747 | sym->backend_decl = entry->sym->backend_decl; | |
1748 | break; | |
1749 | } | |
1750 | } | |
1751 | } | |
1752 | else | |
6a018495 | 1753 | sym->backend_decl = gsym->ns->proc_name->backend_decl; |
71a7778c PT |
1754 | |
1755 | if (sym->backend_decl) | |
6a018495 TB |
1756 | { |
1757 | /* Avoid problems of double deallocation of the backend declaration | |
1758 | later in gfc_trans_use_stmts; cf. PR 45087. */ | |
1759 | if (sym->attr.if_source != IFSRC_DECL && sym->attr.use_assoc) | |
1760 | sym->attr.use_assoc = 0; | |
1761 | ||
1762 | return sym->backend_decl; | |
1763 | } | |
71a7778c PT |
1764 | } |
1765 | ||
3af8d8cb PT |
1766 | /* See if this is a module procedure from the same file. If so, |
1767 | return the backend_decl. */ | |
1768 | if (sym->module) | |
1769 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
1770 | ||
77f8682b TB |
1771 | module_sym: |
1772 | if (gsym && gsym->ns | |
1773 | && (gsym->type == GSYM_MODULE | |
1774 | || (gsym->ns->proc_name && gsym->ns->proc_name->attr.flavor == FL_MODULE))) | |
3af8d8cb PT |
1775 | { |
1776 | gfc_symbol *s; | |
1777 | ||
1778 | s = NULL; | |
77f8682b TB |
1779 | if (gsym->type == GSYM_MODULE) |
1780 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
1781 | else | |
1782 | gfc_find_symbol (gsym->sym_name, gsym->ns, 0, &s); | |
1783 | ||
3af8d8cb PT |
1784 | if (s && s->backend_decl) |
1785 | { | |
f29bda83 TB |
1786 | if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) |
1787 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, | |
1788 | true); | |
1789 | else if (sym->ts.type == BT_CHARACTER) | |
1790 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
3af8d8cb PT |
1791 | sym->backend_decl = s->backend_decl; |
1792 | return sym->backend_decl; | |
1793 | } | |
1794 | } | |
1795 | ||
6de9cd9a DN |
1796 | if (sym->attr.intrinsic) |
1797 | { | |
1798 | /* Call the resolution function to get the actual name. This is | |
1799 | a nasty hack which relies on the resolution functions only looking | |
1800 | at the first argument. We pass NULL for the second argument | |
1801 | otherwise things like AINT get confused. */ | |
1802 | isym = gfc_find_function (sym->name); | |
6e45f57b | 1803 | gcc_assert (isym->resolve.f0 != NULL); |
6de9cd9a DN |
1804 | |
1805 | memset (&e, 0, sizeof (e)); | |
1806 | e.expr_type = EXPR_FUNCTION; | |
1807 | ||
1808 | memset (&argexpr, 0, sizeof (argexpr)); | |
6e45f57b | 1809 | gcc_assert (isym->formal); |
6de9cd9a DN |
1810 | argexpr.ts = isym->formal->ts; |
1811 | ||
1812 | if (isym->formal->next == NULL) | |
1813 | isym->resolve.f1 (&e, &argexpr); | |
1814 | else | |
1815 | { | |
0e7e7e6e FXC |
1816 | if (isym->formal->next->next == NULL) |
1817 | isym->resolve.f2 (&e, &argexpr, NULL); | |
1818 | else | |
1819 | { | |
5cda5098 FXC |
1820 | if (isym->formal->next->next->next == NULL) |
1821 | isym->resolve.f3 (&e, &argexpr, NULL, NULL); | |
1822 | else | |
1823 | { | |
1824 | /* All specific intrinsics take less than 5 arguments. */ | |
1825 | gcc_assert (isym->formal->next->next->next->next == NULL); | |
1826 | isym->resolve.f4 (&e, &argexpr, NULL, NULL, NULL); | |
1827 | } | |
0e7e7e6e | 1828 | } |
6de9cd9a | 1829 | } |
973ff4c0 TS |
1830 | |
1831 | if (gfc_option.flag_f2c | |
1832 | && ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind) | |
1833 | || e.ts.type == BT_COMPLEX)) | |
1834 | { | |
1835 | /* Specific which needs a different implementation if f2c | |
1836 | calling conventions are used. */ | |
e6472bce | 1837 | sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name); |
973ff4c0 TS |
1838 | } |
1839 | else | |
e6472bce | 1840 | sprintf (s, "_gfortran_specific%s", e.value.function.name); |
973ff4c0 | 1841 | |
6de9cd9a DN |
1842 | name = get_identifier (s); |
1843 | mangled_name = name; | |
1844 | } | |
1845 | else | |
1846 | { | |
1847 | name = gfc_sym_identifier (sym); | |
1848 | mangled_name = gfc_sym_mangled_function_id (sym); | |
1849 | } | |
1850 | ||
1851 | type = gfc_get_function_type (sym); | |
c2255bc4 AH |
1852 | fndecl = build_decl (input_location, |
1853 | FUNCTION_DECL, name, type); | |
6de9cd9a | 1854 | |
384f586a KT |
1855 | /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; |
1856 | TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
dd5a833e | 1857 | the opposite of declaring a function as static in C). */ |
384f586a KT |
1858 | DECL_EXTERNAL (fndecl) = 1; |
1859 | TREE_PUBLIC (fndecl) = 1; | |
1860 | ||
43ce5e52 FXC |
1861 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1862 | decl_attributes (&fndecl, attributes, 0); | |
1863 | ||
1864 | gfc_set_decl_assembler_name (fndecl, mangled_name); | |
6de9cd9a DN |
1865 | |
1866 | /* Set the context of this decl. */ | |
1867 | if (0 && sym->ns && sym->ns->proc_name) | |
1868 | { | |
1869 | /* TODO: Add external decls to the appropriate scope. */ | |
1870 | DECL_CONTEXT (fndecl) = sym->ns->proc_name->backend_decl; | |
1871 | } | |
1872 | else | |
1873 | { | |
f8d0aee5 | 1874 | /* Global declaration, e.g. intrinsic subroutine. */ |
6de9cd9a DN |
1875 | DECL_CONTEXT (fndecl) = NULL_TREE; |
1876 | } | |
1877 | ||
6de9cd9a DN |
1878 | /* Set attributes for PURE functions. A call to PURE function in the |
1879 | Fortran 95 sense is both pure and without side effects in the C | |
1880 | sense. */ | |
033418dc | 1881 | if (sym->attr.pure || sym->attr.implicit_pure) |
6de9cd9a | 1882 | { |
cf013e9f | 1883 | if (sym->attr.function && !gfc_return_by_reference (sym)) |
becfd6e5 | 1884 | DECL_PURE_P (fndecl) = 1; |
b7e6a6b3 TS |
1885 | /* TODO: check if pure SUBROUTINEs don't have INTENT(OUT) |
1886 | parameters and don't use alternate returns (is this | |
1887 | allowed?). In that case, calls to them are meaningless, and | |
3d79abbd | 1888 | can be optimized away. See also in build_function_decl(). */ |
b7e6a6b3 | 1889 | TREE_SIDE_EFFECTS (fndecl) = 0; |
6de9cd9a DN |
1890 | } |
1891 | ||
fe58e076 TK |
1892 | /* Mark non-returning functions. */ |
1893 | if (sym->attr.noreturn) | |
1894 | TREE_THIS_VOLATILE(fndecl) = 1; | |
1895 | ||
6de9cd9a DN |
1896 | sym->backend_decl = fndecl; |
1897 | ||
1898 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1899 | pushdecl_top_level (fndecl); | |
1900 | ||
dd2fc525 JJ |
1901 | if (sym->formal_ns |
1902 | && sym->formal_ns->proc_name == sym | |
1903 | && sym->formal_ns->omp_declare_simd) | |
1904 | gfc_trans_omp_declare_simd (sym->formal_ns); | |
1905 | ||
6de9cd9a DN |
1906 | return fndecl; |
1907 | } | |
1908 | ||
1909 | ||
1910 | /* Create a declaration for a procedure. For external functions (in the C | |
3d79abbd PB |
1911 | sense) use gfc_get_extern_function_decl. HAS_ENTRIES is true if this is |
1912 | a master function with alternate entry points. */ | |
6de9cd9a | 1913 | |
3d79abbd | 1914 | static void |
fb55ca75 | 1915 | build_function_decl (gfc_symbol * sym, bool global) |
6de9cd9a | 1916 | { |
08a6b8e0 | 1917 | tree fndecl, type, attributes; |
6de9cd9a | 1918 | symbol_attribute attr; |
3d79abbd | 1919 | tree result_decl; |
6de9cd9a DN |
1920 | gfc_formal_arglist *f; |
1921 | ||
6e45f57b | 1922 | gcc_assert (!sym->attr.external); |
6de9cd9a | 1923 | |
1d0134b3 JW |
1924 | if (sym->backend_decl) |
1925 | return; | |
1926 | ||
c8cc8542 PB |
1927 | /* Set the line and filename. sym->declared_at seems to point to the |
1928 | last statement for subroutines, but it'll do for now. */ | |
1929 | gfc_set_backend_locus (&sym->declared_at); | |
1930 | ||
6de9cd9a | 1931 | /* Allow only one nesting level. Allow public declarations. */ |
6e45f57b | 1932 | gcc_assert (current_function_decl == NULL_TREE |
e5b16755 RG |
1933 | || DECL_FILE_SCOPE_P (current_function_decl) |
1934 | || (TREE_CODE (DECL_CONTEXT (current_function_decl)) | |
1935 | == NAMESPACE_DECL)); | |
6de9cd9a DN |
1936 | |
1937 | type = gfc_get_function_type (sym); | |
c2255bc4 AH |
1938 | fndecl = build_decl (input_location, |
1939 | FUNCTION_DECL, gfc_sym_identifier (sym), type); | |
6de9cd9a | 1940 | |
43ce5e52 FXC |
1941 | attr = sym->attr; |
1942 | ||
384f586a KT |
1943 | /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; |
1944 | TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
dd5a833e | 1945 | the opposite of declaring a function as static in C). */ |
384f586a KT |
1946 | DECL_EXTERNAL (fndecl) = 0; |
1947 | ||
58341a42 TB |
1948 | if (sym->attr.access == ACCESS_UNKNOWN && sym->module |
1949 | && (sym->ns->default_access == ACCESS_PRIVATE | |
1950 | || (sym->ns->default_access == ACCESS_UNKNOWN | |
1951 | && gfc_option.flag_module_private))) | |
1952 | sym->attr.access = ACCESS_PRIVATE; | |
1953 | ||
384f586a | 1954 | if (!current_function_decl |
5af6fa0b | 1955 | && !sym->attr.entry_master && !sym->attr.is_main_program |
cdd244b8 TB |
1956 | && (sym->attr.access != ACCESS_PRIVATE || sym->binding_label |
1957 | || sym->attr.public_used)) | |
384f586a KT |
1958 | TREE_PUBLIC (fndecl) = 1; |
1959 | ||
29be7510 JW |
1960 | if (sym->attr.referenced || sym->attr.entry_master) |
1961 | TREE_USED (fndecl) = 1; | |
1962 | ||
43ce5e52 FXC |
1963 | attributes = add_attributes_to_decl (attr, NULL_TREE); |
1964 | decl_attributes (&fndecl, attributes, 0); | |
1965 | ||
6de9cd9a | 1966 | /* Figure out the return type of the declared function, and build a |
f8d0aee5 | 1967 | RESULT_DECL for it. If this is a subroutine with alternate |
6de9cd9a | 1968 | returns, build a RESULT_DECL for it. */ |
6de9cd9a DN |
1969 | result_decl = NULL_TREE; |
1970 | /* TODO: Shouldn't this just be TREE_TYPE (TREE_TYPE (fndecl)). */ | |
1971 | if (attr.function) | |
1972 | { | |
1973 | if (gfc_return_by_reference (sym)) | |
1974 | type = void_type_node; | |
1975 | else | |
1976 | { | |
1977 | if (sym->result != sym) | |
1978 | result_decl = gfc_sym_identifier (sym->result); | |
1979 | ||
1980 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
1981 | } | |
1982 | } | |
1983 | else | |
1984 | { | |
1985 | /* Look for alternate return placeholders. */ | |
1986 | int has_alternate_returns = 0; | |
4cbc9039 | 1987 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
6de9cd9a DN |
1988 | { |
1989 | if (f->sym == NULL) | |
1990 | { | |
1991 | has_alternate_returns = 1; | |
1992 | break; | |
1993 | } | |
1994 | } | |
1995 | ||
1996 | if (has_alternate_returns) | |
1997 | type = integer_type_node; | |
1998 | else | |
1999 | type = void_type_node; | |
2000 | } | |
2001 | ||
c2255bc4 AH |
2002 | result_decl = build_decl (input_location, |
2003 | RESULT_DECL, result_decl, type); | |
b785f485 RH |
2004 | DECL_ARTIFICIAL (result_decl) = 1; |
2005 | DECL_IGNORED_P (result_decl) = 1; | |
6de9cd9a DN |
2006 | DECL_CONTEXT (result_decl) = fndecl; |
2007 | DECL_RESULT (fndecl) = result_decl; | |
2008 | ||
2009 | /* Don't call layout_decl for a RESULT_DECL. | |
f8d0aee5 | 2010 | layout_decl (result_decl, 0); */ |
6de9cd9a | 2011 | |
6de9cd9a | 2012 | /* TREE_STATIC means the function body is defined here. */ |
1d754240 | 2013 | TREE_STATIC (fndecl) = 1; |
6de9cd9a | 2014 | |
f8d0aee5 | 2015 | /* Set attributes for PURE functions. A call to a PURE function in the |
6de9cd9a DN |
2016 | Fortran 95 sense is both pure and without side effects in the C |
2017 | sense. */ | |
033418dc | 2018 | if (attr.pure || attr.implicit_pure) |
6de9cd9a | 2019 | { |
b7e6a6b3 | 2020 | /* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments |
86bf520d | 2021 | including an alternate return. In that case it can also be |
1f2959f0 | 2022 | marked as PURE. See also in gfc_get_extern_function_decl(). */ |
a01db3bf | 2023 | if (attr.function && !gfc_return_by_reference (sym)) |
becfd6e5 | 2024 | DECL_PURE_P (fndecl) = 1; |
6de9cd9a DN |
2025 | TREE_SIDE_EFFECTS (fndecl) = 0; |
2026 | } | |
2027 | ||
08a6b8e0 | 2028 | |
6de9cd9a DN |
2029 | /* Layout the function declaration and put it in the binding level |
2030 | of the current function. */ | |
fb55ca75 | 2031 | |
755634e6 | 2032 | if (global) |
fb55ca75 TB |
2033 | pushdecl_top_level (fndecl); |
2034 | else | |
2035 | pushdecl (fndecl); | |
3d79abbd | 2036 | |
e5b16755 RG |
2037 | /* Perform name mangling if this is a top level or module procedure. */ |
2038 | if (current_function_decl == NULL_TREE) | |
2039 | gfc_set_decl_assembler_name (fndecl, gfc_sym_mangled_function_id (sym)); | |
2040 | ||
3d79abbd PB |
2041 | sym->backend_decl = fndecl; |
2042 | } | |
2043 | ||
2044 | ||
2045 | /* Create the DECL_ARGUMENTS for a procedure. */ | |
2046 | ||
2047 | static void | |
2048 | create_function_arglist (gfc_symbol * sym) | |
2049 | { | |
2050 | tree fndecl; | |
2051 | gfc_formal_arglist *f; | |
417ab240 JJ |
2052 | tree typelist, hidden_typelist; |
2053 | tree arglist, hidden_arglist; | |
3d79abbd PB |
2054 | tree type; |
2055 | tree parm; | |
2056 | ||
2057 | fndecl = sym->backend_decl; | |
2058 | ||
1d754240 PB |
2059 | /* Build formal argument list. Make sure that their TREE_CONTEXT is |
2060 | the new FUNCTION_DECL node. */ | |
1d754240 | 2061 | arglist = NULL_TREE; |
417ab240 | 2062 | hidden_arglist = NULL_TREE; |
1d754240 | 2063 | typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
3d79abbd PB |
2064 | |
2065 | if (sym->attr.entry_master) | |
2066 | { | |
2067 | type = TREE_VALUE (typelist); | |
c2255bc4 AH |
2068 | parm = build_decl (input_location, |
2069 | PARM_DECL, get_identifier ("__entry"), type); | |
8b704316 | 2070 | |
3d79abbd PB |
2071 | DECL_CONTEXT (parm) = fndecl; |
2072 | DECL_ARG_TYPE (parm) = type; | |
2073 | TREE_READONLY (parm) = 1; | |
faf28b3a | 2074 | gfc_finish_decl (parm); |
3e978d30 | 2075 | DECL_ARTIFICIAL (parm) = 1; |
3d79abbd PB |
2076 | |
2077 | arglist = chainon (arglist, parm); | |
2078 | typelist = TREE_CHAIN (typelist); | |
2079 | } | |
2080 | ||
1d754240 | 2081 | if (gfc_return_by_reference (sym)) |
6de9cd9a | 2082 | { |
417ab240 | 2083 | tree type = TREE_VALUE (typelist), length = NULL; |
6de9cd9a | 2084 | |
1d754240 PB |
2085 | if (sym->ts.type == BT_CHARACTER) |
2086 | { | |
1d754240 | 2087 | /* Length of character result. */ |
417ab240 | 2088 | tree len_type = TREE_VALUE (TREE_CHAIN (typelist)); |
6de9cd9a | 2089 | |
c2255bc4 AH |
2090 | length = build_decl (input_location, |
2091 | PARM_DECL, | |
1d754240 | 2092 | get_identifier (".__result"), |
417ab240 | 2093 | len_type); |
bc21d315 | 2094 | if (!sym->ts.u.cl->length) |
1d754240 | 2095 | { |
bc21d315 | 2096 | sym->ts.u.cl->backend_decl = length; |
1d754240 | 2097 | TREE_USED (length) = 1; |
6de9cd9a | 2098 | } |
6e45f57b | 2099 | gcc_assert (TREE_CODE (length) == PARM_DECL); |
1d754240 | 2100 | DECL_CONTEXT (length) = fndecl; |
417ab240 | 2101 | DECL_ARG_TYPE (length) = len_type; |
1d754240 | 2102 | TREE_READONLY (length) = 1; |
ca0e9281 | 2103 | DECL_ARTIFICIAL (length) = 1; |
faf28b3a | 2104 | gfc_finish_decl (length); |
bc21d315 JW |
2105 | if (sym->ts.u.cl->backend_decl == NULL |
2106 | || sym->ts.u.cl->backend_decl == length) | |
417ab240 JJ |
2107 | { |
2108 | gfc_symbol *arg; | |
2109 | tree backend_decl; | |
6de9cd9a | 2110 | |
bc21d315 | 2111 | if (sym->ts.u.cl->backend_decl == NULL) |
417ab240 | 2112 | { |
c2255bc4 AH |
2113 | tree len = build_decl (input_location, |
2114 | VAR_DECL, | |
417ab240 JJ |
2115 | get_identifier ("..__result"), |
2116 | gfc_charlen_type_node); | |
2117 | DECL_ARTIFICIAL (len) = 1; | |
2118 | TREE_USED (len) = 1; | |
bc21d315 | 2119 | sym->ts.u.cl->backend_decl = len; |
417ab240 | 2120 | } |
6de9cd9a | 2121 | |
417ab240 JJ |
2122 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ |
2123 | arg = sym->result ? sym->result : sym; | |
2124 | backend_decl = arg->backend_decl; | |
2125 | /* Temporary clear it, so that gfc_sym_type creates complete | |
2126 | type. */ | |
2127 | arg->backend_decl = NULL; | |
2128 | type = gfc_sym_type (arg); | |
2129 | arg->backend_decl = backend_decl; | |
2130 | type = build_reference_type (type); | |
2131 | } | |
2132 | } | |
6de9cd9a | 2133 | |
c2255bc4 AH |
2134 | parm = build_decl (input_location, |
2135 | PARM_DECL, get_identifier ("__result"), type); | |
6de9cd9a | 2136 | |
417ab240 JJ |
2137 | DECL_CONTEXT (parm) = fndecl; |
2138 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2139 | TREE_READONLY (parm) = 1; | |
2140 | DECL_ARTIFICIAL (parm) = 1; | |
faf28b3a | 2141 | gfc_finish_decl (parm); |
6de9cd9a | 2142 | |
417ab240 JJ |
2143 | arglist = chainon (arglist, parm); |
2144 | typelist = TREE_CHAIN (typelist); | |
6de9cd9a | 2145 | |
417ab240 JJ |
2146 | if (sym->ts.type == BT_CHARACTER) |
2147 | { | |
2148 | gfc_allocate_lang_decl (parm); | |
2149 | arglist = chainon (arglist, length); | |
1d754240 PB |
2150 | typelist = TREE_CHAIN (typelist); |
2151 | } | |
2152 | } | |
6de9cd9a | 2153 | |
417ab240 | 2154 | hidden_typelist = typelist; |
4cbc9039 | 2155 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
417ab240 JJ |
2156 | if (f->sym != NULL) /* Ignore alternate returns. */ |
2157 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2158 | ||
4cbc9039 | 2159 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
1d754240 PB |
2160 | { |
2161 | char name[GFC_MAX_SYMBOL_LEN + 2]; | |
417ab240 | 2162 | |
1d754240 PB |
2163 | /* Ignore alternate returns. */ |
2164 | if (f->sym == NULL) | |
2165 | continue; | |
6de9cd9a | 2166 | |
1d754240 | 2167 | type = TREE_VALUE (typelist); |
6de9cd9a | 2168 | |
33215bb3 TB |
2169 | if (f->sym->ts.type == BT_CHARACTER |
2170 | && (!sym->attr.is_bind_c || sym->attr.entry_master)) | |
417ab240 JJ |
2171 | { |
2172 | tree len_type = TREE_VALUE (hidden_typelist); | |
2173 | tree length = NULL_TREE; | |
8d51f26f PT |
2174 | if (!f->sym->ts.deferred) |
2175 | gcc_assert (len_type == gfc_charlen_type_node); | |
2176 | else | |
2177 | gcc_assert (POINTER_TYPE_P (len_type)); | |
417ab240 JJ |
2178 | |
2179 | strcpy (&name[1], f->sym->name); | |
2180 | name[0] = '_'; | |
c2255bc4 AH |
2181 | length = build_decl (input_location, |
2182 | PARM_DECL, get_identifier (name), len_type); | |
6de9cd9a | 2183 | |
417ab240 JJ |
2184 | hidden_arglist = chainon (hidden_arglist, length); |
2185 | DECL_CONTEXT (length) = fndecl; | |
2186 | DECL_ARTIFICIAL (length) = 1; | |
2187 | DECL_ARG_TYPE (length) = len_type; | |
2188 | TREE_READONLY (length) = 1; | |
faf28b3a | 2189 | gfc_finish_decl (length); |
6de9cd9a | 2190 | |
cadb8f42 | 2191 | /* Remember the passed value. */ |
8b704316 | 2192 | if (!f->sym->ts.u.cl || f->sym->ts.u.cl->passed_length) |
3ba558db TB |
2193 | { |
2194 | /* This can happen if the same type is used for multiple | |
2195 | arguments. We need to copy cl as otherwise | |
2196 | cl->passed_length gets overwritten. */ | |
b76e28c6 | 2197 | f->sym->ts.u.cl = gfc_new_charlen (f->sym->ns, f->sym->ts.u.cl); |
3ba558db | 2198 | } |
bc21d315 | 2199 | f->sym->ts.u.cl->passed_length = length; |
6de9cd9a | 2200 | |
417ab240 | 2201 | /* Use the passed value for assumed length variables. */ |
bc21d315 | 2202 | if (!f->sym->ts.u.cl->length) |
6de9cd9a | 2203 | { |
417ab240 | 2204 | TREE_USED (length) = 1; |
bc21d315 JW |
2205 | gcc_assert (!f->sym->ts.u.cl->backend_decl); |
2206 | f->sym->ts.u.cl->backend_decl = length; | |
417ab240 JJ |
2207 | } |
2208 | ||
2209 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2210 | ||
bc21d315 JW |
2211 | if (f->sym->ts.u.cl->backend_decl == NULL |
2212 | || f->sym->ts.u.cl->backend_decl == length) | |
417ab240 | 2213 | { |
bc21d315 | 2214 | if (f->sym->ts.u.cl->backend_decl == NULL) |
417ab240 JJ |
2215 | gfc_create_string_length (f->sym); |
2216 | ||
2217 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ | |
2218 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
2219 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2220 | else | |
2221 | type = gfc_sym_type (f->sym); | |
6de9cd9a | 2222 | } |
6de9cd9a | 2223 | } |
60f97ac8 | 2224 | /* For noncharacter scalar intrinsic types, VALUE passes the value, |
9b110be2 | 2225 | hence, the optional status cannot be transferred via a NULL pointer. |
60f97ac8 TB |
2226 | Thus, we will use a hidden argument in that case. */ |
2227 | else if (f->sym->attr.optional && f->sym->attr.value | |
adede54c | 2228 | && !f->sym->attr.dimension && f->sym->ts.type != BT_CLASS |
60f97ac8 TB |
2229 | && f->sym->ts.type != BT_DERIVED) |
2230 | { | |
2231 | tree tmp; | |
2232 | strcpy (&name[1], f->sym->name); | |
2233 | name[0] = '_'; | |
2234 | tmp = build_decl (input_location, | |
2235 | PARM_DECL, get_identifier (name), | |
2236 | boolean_type_node); | |
2237 | ||
2238 | hidden_arglist = chainon (hidden_arglist, tmp); | |
2239 | DECL_CONTEXT (tmp) = fndecl; | |
2240 | DECL_ARTIFICIAL (tmp) = 1; | |
2241 | DECL_ARG_TYPE (tmp) = boolean_type_node; | |
2242 | TREE_READONLY (tmp) = 1; | |
2243 | gfc_finish_decl (tmp); | |
2244 | } | |
6de9cd9a | 2245 | |
417ab240 JJ |
2246 | /* For non-constant length array arguments, make sure they use |
2247 | a different type node from TYPE_ARG_TYPES type. */ | |
2248 | if (f->sym->attr.dimension | |
2249 | && type == TREE_VALUE (typelist) | |
2250 | && TREE_CODE (type) == POINTER_TYPE | |
2251 | && GFC_ARRAY_TYPE_P (type) | |
2252 | && f->sym->as->type != AS_ASSUMED_SIZE | |
2253 | && ! COMPLETE_TYPE_P (TREE_TYPE (type))) | |
2254 | { | |
2255 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
2256 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2257 | else | |
2258 | type = gfc_sym_type (f->sym); | |
2259 | } | |
2260 | ||
8fb74da4 JW |
2261 | if (f->sym->attr.proc_pointer) |
2262 | type = build_pointer_type (type); | |
2263 | ||
c28d1d9b TB |
2264 | if (f->sym->attr.volatile_) |
2265 | type = build_qualified_type (type, TYPE_QUAL_VOLATILE); | |
2266 | ||
df2fba9e | 2267 | /* Build the argument declaration. */ |
c2255bc4 AH |
2268 | parm = build_decl (input_location, |
2269 | PARM_DECL, gfc_sym_identifier (f->sym), type); | |
417ab240 | 2270 | |
c28d1d9b TB |
2271 | if (f->sym->attr.volatile_) |
2272 | { | |
2273 | TREE_THIS_VOLATILE (parm) = 1; | |
2274 | TREE_SIDE_EFFECTS (parm) = 1; | |
2275 | } | |
2276 | ||
417ab240 JJ |
2277 | /* Fill in arg stuff. */ |
2278 | DECL_CONTEXT (parm) = fndecl; | |
2279 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2280 | /* All implementation args are read-only. */ | |
2281 | TREE_READONLY (parm) = 1; | |
714495cd JJ |
2282 | if (POINTER_TYPE_P (type) |
2283 | && (!f->sym->attr.proc_pointer | |
2284 | && f->sym->attr.flavor != FL_PROCEDURE)) | |
2285 | DECL_BY_REFERENCE (parm) = 1; | |
417ab240 | 2286 | |
faf28b3a | 2287 | gfc_finish_decl (parm); |
92d28cbb | 2288 | gfc_finish_decl_attrs (parm, &f->sym->attr); |
417ab240 JJ |
2289 | |
2290 | f->sym->backend_decl = parm; | |
2291 | ||
aa13dc3c TB |
2292 | /* Coarrays which are descriptorless or assumed-shape pass with |
2293 | -fcoarray=lib the token and the offset as hidden arguments. */ | |
598cc4fa TB |
2294 | if (gfc_option.coarray == GFC_FCOARRAY_LIB |
2295 | && ((f->sym->ts.type != BT_CLASS && f->sym->attr.codimension | |
2296 | && !f->sym->attr.allocatable) | |
2297 | || (f->sym->ts.type == BT_CLASS | |
2298 | && CLASS_DATA (f->sym)->attr.codimension | |
2299 | && !CLASS_DATA (f->sym)->attr.allocatable))) | |
0c53708e TB |
2300 | { |
2301 | tree caf_type; | |
2302 | tree token; | |
2303 | tree offset; | |
2304 | ||
2305 | gcc_assert (f->sym->backend_decl != NULL_TREE | |
2306 | && !sym->attr.is_bind_c); | |
598cc4fa TB |
2307 | caf_type = f->sym->ts.type == BT_CLASS |
2308 | ? TREE_TYPE (CLASS_DATA (f->sym)->backend_decl) | |
2309 | : TREE_TYPE (f->sym->backend_decl); | |
0c53708e | 2310 | |
0c53708e TB |
2311 | token = build_decl (input_location, PARM_DECL, |
2312 | create_tmp_var_name ("caf_token"), | |
2313 | build_qualified_type (pvoid_type_node, | |
2314 | TYPE_QUAL_RESTRICT)); | |
598cc4fa TB |
2315 | if ((f->sym->ts.type != BT_CLASS |
2316 | && f->sym->as->type != AS_DEFERRED) | |
2317 | || (f->sym->ts.type == BT_CLASS | |
2318 | && CLASS_DATA (f->sym)->as->type != AS_DEFERRED)) | |
aa13dc3c TB |
2319 | { |
2320 | gcc_assert (DECL_LANG_SPECIFIC (f->sym->backend_decl) == NULL | |
2321 | || GFC_DECL_TOKEN (f->sym->backend_decl) == NULL_TREE); | |
2322 | if (DECL_LANG_SPECIFIC (f->sym->backend_decl) == NULL) | |
2323 | gfc_allocate_lang_decl (f->sym->backend_decl); | |
2324 | GFC_DECL_TOKEN (f->sym->backend_decl) = token; | |
2325 | } | |
2326 | else | |
2327 | { | |
2328 | gcc_assert (GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) == NULL_TREE); | |
2329 | GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) = token; | |
2330 | } | |
8b704316 | 2331 | |
0c53708e TB |
2332 | DECL_CONTEXT (token) = fndecl; |
2333 | DECL_ARTIFICIAL (token) = 1; | |
2334 | DECL_ARG_TYPE (token) = TREE_VALUE (typelist); | |
2335 | TREE_READONLY (token) = 1; | |
2336 | hidden_arglist = chainon (hidden_arglist, token); | |
2337 | gfc_finish_decl (token); | |
2338 | ||
0c53708e TB |
2339 | offset = build_decl (input_location, PARM_DECL, |
2340 | create_tmp_var_name ("caf_offset"), | |
2341 | gfc_array_index_type); | |
2342 | ||
598cc4fa TB |
2343 | if ((f->sym->ts.type != BT_CLASS |
2344 | && f->sym->as->type != AS_DEFERRED) | |
2345 | || (f->sym->ts.type == BT_CLASS | |
2346 | && CLASS_DATA (f->sym)->as->type != AS_DEFERRED)) | |
aa13dc3c TB |
2347 | { |
2348 | gcc_assert (GFC_DECL_CAF_OFFSET (f->sym->backend_decl) | |
2349 | == NULL_TREE); | |
2350 | GFC_DECL_CAF_OFFSET (f->sym->backend_decl) = offset; | |
2351 | } | |
2352 | else | |
2353 | { | |
2354 | gcc_assert (GFC_TYPE_ARRAY_CAF_OFFSET (caf_type) == NULL_TREE); | |
2355 | GFC_TYPE_ARRAY_CAF_OFFSET (caf_type) = offset; | |
2356 | } | |
0c53708e TB |
2357 | DECL_CONTEXT (offset) = fndecl; |
2358 | DECL_ARTIFICIAL (offset) = 1; | |
2359 | DECL_ARG_TYPE (offset) = TREE_VALUE (typelist); | |
2360 | TREE_READONLY (offset) = 1; | |
2361 | hidden_arglist = chainon (hidden_arglist, offset); | |
2362 | gfc_finish_decl (offset); | |
2363 | } | |
2364 | ||
417ab240 | 2365 | arglist = chainon (arglist, parm); |
1d754240 | 2366 | typelist = TREE_CHAIN (typelist); |
6de9cd9a | 2367 | } |
1d754240 | 2368 | |
7861a5ce TB |
2369 | /* Add the hidden string length parameters, unless the procedure |
2370 | is bind(C). */ | |
2371 | if (!sym->attr.is_bind_c) | |
2372 | arglist = chainon (arglist, hidden_arglist); | |
417ab240 | 2373 | |
884d2e6b SE |
2374 | gcc_assert (hidden_typelist == NULL_TREE |
2375 | || TREE_VALUE (hidden_typelist) == void_type_node); | |
1d754240 | 2376 | DECL_ARGUMENTS (fndecl) = arglist; |
3d79abbd | 2377 | } |
1d754240 | 2378 | |
3d79abbd PB |
2379 | /* Do the setup necessary before generating the body of a function. */ |
2380 | ||
2381 | static void | |
2382 | trans_function_start (gfc_symbol * sym) | |
2383 | { | |
2384 | tree fndecl; | |
2385 | ||
2386 | fndecl = sym->backend_decl; | |
2387 | ||
f8d0aee5 | 2388 | /* Let GCC know the current scope is this function. */ |
3d79abbd PB |
2389 | current_function_decl = fndecl; |
2390 | ||
f8d0aee5 | 2391 | /* Let the world know what we're about to do. */ |
3d79abbd PB |
2392 | announce_function (fndecl); |
2393 | ||
e5b16755 | 2394 | if (DECL_FILE_SCOPE_P (fndecl)) |
3d79abbd | 2395 | { |
f8d0aee5 | 2396 | /* Create RTL for function declaration. */ |
3d79abbd PB |
2397 | rest_of_decl_compilation (fndecl, 1, 0); |
2398 | } | |
2399 | ||
f8d0aee5 | 2400 | /* Create RTL for function definition. */ |
3d79abbd PB |
2401 | make_decl_rtl (fndecl); |
2402 | ||
b6b27e98 | 2403 | allocate_struct_function (fndecl, false); |
3d79abbd | 2404 | |
f8d0aee5 | 2405 | /* function.c requires a push at the start of the function. */ |
87a60f68 | 2406 | pushlevel (); |
3d79abbd PB |
2407 | } |
2408 | ||
2409 | /* Create thunks for alternate entry points. */ | |
2410 | ||
2411 | static void | |
fb55ca75 | 2412 | build_entry_thunks (gfc_namespace * ns, bool global) |
3d79abbd PB |
2413 | { |
2414 | gfc_formal_arglist *formal; | |
2415 | gfc_formal_arglist *thunk_formal; | |
2416 | gfc_entry_list *el; | |
2417 | gfc_symbol *thunk_sym; | |
2418 | stmtblock_t body; | |
2419 | tree thunk_fndecl; | |
3d79abbd | 2420 | tree tmp; |
c8cc8542 | 2421 | locus old_loc; |
3d79abbd PB |
2422 | |
2423 | /* This should always be a toplevel function. */ | |
6e45f57b | 2424 | gcc_assert (current_function_decl == NULL_TREE); |
3d79abbd | 2425 | |
363aab21 | 2426 | gfc_save_backend_locus (&old_loc); |
3d79abbd PB |
2427 | for (el = ns->entries; el; el = el->next) |
2428 | { | |
9771b263 DN |
2429 | vec<tree, va_gc> *args = NULL; |
2430 | vec<tree, va_gc> *string_args = NULL; | |
3bb06db4 | 2431 | |
3d79abbd | 2432 | thunk_sym = el->sym; |
8b704316 | 2433 | |
fb55ca75 | 2434 | build_function_decl (thunk_sym, global); |
3d79abbd PB |
2435 | create_function_arglist (thunk_sym); |
2436 | ||
2437 | trans_function_start (thunk_sym); | |
2438 | ||
2439 | thunk_fndecl = thunk_sym->backend_decl; | |
2440 | ||
c7c79a09 | 2441 | gfc_init_block (&body); |
3d79abbd | 2442 | |
f8d0aee5 | 2443 | /* Pass extra parameter identifying this entry point. */ |
7d60be94 | 2444 | tmp = build_int_cst (gfc_array_index_type, el->id); |
9771b263 | 2445 | vec_safe_push (args, tmp); |
3d79abbd | 2446 | |
d198b59a JJ |
2447 | if (thunk_sym->attr.function) |
2448 | { | |
2449 | if (gfc_return_by_reference (ns->proc_name)) | |
2450 | { | |
2451 | tree ref = DECL_ARGUMENTS (current_function_decl); | |
9771b263 | 2452 | vec_safe_push (args, ref); |
d198b59a | 2453 | if (ns->proc_name->ts.type == BT_CHARACTER) |
9771b263 | 2454 | vec_safe_push (args, DECL_CHAIN (ref)); |
d198b59a JJ |
2455 | } |
2456 | } | |
2457 | ||
4cbc9039 JW |
2458 | for (formal = gfc_sym_get_dummy_args (ns->proc_name); formal; |
2459 | formal = formal->next) | |
3d79abbd | 2460 | { |
d198b59a JJ |
2461 | /* Ignore alternate returns. */ |
2462 | if (formal->sym == NULL) | |
2463 | continue; | |
2464 | ||
3d79abbd PB |
2465 | /* We don't have a clever way of identifying arguments, so resort to |
2466 | a brute-force search. */ | |
4cbc9039 | 2467 | for (thunk_formal = gfc_sym_get_dummy_args (thunk_sym); |
3d79abbd PB |
2468 | thunk_formal; |
2469 | thunk_formal = thunk_formal->next) | |
2470 | { | |
2471 | if (thunk_formal->sym == formal->sym) | |
2472 | break; | |
2473 | } | |
2474 | ||
2475 | if (thunk_formal) | |
2476 | { | |
2477 | /* Pass the argument. */ | |
3e978d30 | 2478 | DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1; |
9771b263 | 2479 | vec_safe_push (args, thunk_formal->sym->backend_decl); |
3d79abbd PB |
2480 | if (formal->sym->ts.type == BT_CHARACTER) |
2481 | { | |
bc21d315 | 2482 | tmp = thunk_formal->sym->ts.u.cl->backend_decl; |
9771b263 | 2483 | vec_safe_push (string_args, tmp); |
3d79abbd PB |
2484 | } |
2485 | } | |
2486 | else | |
2487 | { | |
2488 | /* Pass NULL for a missing argument. */ | |
9771b263 | 2489 | vec_safe_push (args, null_pointer_node); |
3d79abbd PB |
2490 | if (formal->sym->ts.type == BT_CHARACTER) |
2491 | { | |
c3238e32 | 2492 | tmp = build_int_cst (gfc_charlen_type_node, 0); |
9771b263 | 2493 | vec_safe_push (string_args, tmp); |
3d79abbd PB |
2494 | } |
2495 | } | |
2496 | } | |
2497 | ||
2498 | /* Call the master function. */ | |
9771b263 | 2499 | vec_safe_splice (args, string_args); |
3d79abbd | 2500 | tmp = ns->proc_name->backend_decl; |
3bb06db4 | 2501 | tmp = build_call_expr_loc_vec (input_location, tmp, args); |
d198b59a JJ |
2502 | if (ns->proc_name->attr.mixed_entry_master) |
2503 | { | |
2504 | tree union_decl, field; | |
2505 | tree master_type = TREE_TYPE (ns->proc_name->backend_decl); | |
2506 | ||
c2255bc4 AH |
2507 | union_decl = build_decl (input_location, |
2508 | VAR_DECL, get_identifier ("__result"), | |
d198b59a JJ |
2509 | TREE_TYPE (master_type)); |
2510 | DECL_ARTIFICIAL (union_decl) = 1; | |
2511 | DECL_EXTERNAL (union_decl) = 0; | |
2512 | TREE_PUBLIC (union_decl) = 0; | |
2513 | TREE_USED (union_decl) = 1; | |
2514 | layout_decl (union_decl, 0); | |
2515 | pushdecl (union_decl); | |
2516 | ||
2517 | DECL_CONTEXT (union_decl) = current_function_decl; | |
bc98ed60 TB |
2518 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
2519 | TREE_TYPE (union_decl), union_decl, tmp); | |
d198b59a JJ |
2520 | gfc_add_expr_to_block (&body, tmp); |
2521 | ||
2522 | for (field = TYPE_FIELDS (TREE_TYPE (union_decl)); | |
910ad8de | 2523 | field; field = DECL_CHAIN (field)) |
d198b59a JJ |
2524 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2525 | thunk_sym->result->name) == 0) | |
2526 | break; | |
2527 | gcc_assert (field != NULL_TREE); | |
bc98ed60 TB |
2528 | tmp = fold_build3_loc (input_location, COMPONENT_REF, |
2529 | TREE_TYPE (field), union_decl, field, | |
2530 | NULL_TREE); | |
8b704316 | 2531 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
44855d8c TS |
2532 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2533 | DECL_RESULT (current_function_decl), tmp); | |
d198b59a JJ |
2534 | tmp = build1_v (RETURN_EXPR, tmp); |
2535 | } | |
2536 | else if (TREE_TYPE (DECL_RESULT (current_function_decl)) | |
2537 | != void_type_node) | |
2538 | { | |
bc98ed60 | 2539 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
44855d8c TS |
2540 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2541 | DECL_RESULT (current_function_decl), tmp); | |
d198b59a JJ |
2542 | tmp = build1_v (RETURN_EXPR, tmp); |
2543 | } | |
3d79abbd PB |
2544 | gfc_add_expr_to_block (&body, tmp); |
2545 | ||
2546 | /* Finish off this function and send it for code generation. */ | |
2547 | DECL_SAVED_TREE (thunk_fndecl) = gfc_finish_block (&body); | |
c7c79a09 | 2548 | tmp = getdecls (); |
87a60f68 | 2549 | poplevel (1, 1); |
3d79abbd | 2550 | BLOCK_SUPERCONTEXT (DECL_INITIAL (thunk_fndecl)) = thunk_fndecl; |
c7c79a09 JJ |
2551 | DECL_SAVED_TREE (thunk_fndecl) |
2552 | = build3_v (BIND_EXPR, tmp, DECL_SAVED_TREE (thunk_fndecl), | |
2553 | DECL_INITIAL (thunk_fndecl)); | |
3d79abbd PB |
2554 | |
2555 | /* Output the GENERIC tree. */ | |
2556 | dump_function (TDI_original, thunk_fndecl); | |
2557 | ||
2558 | /* Store the end of the function, so that we get good line number | |
2559 | info for the epilogue. */ | |
2560 | cfun->function_end_locus = input_location; | |
2561 | ||
2562 | /* We're leaving the context of this function, so zap cfun. | |
2563 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
2564 | tree_rest_of_compilation. */ | |
db2960f4 | 2565 | set_cfun (NULL); |
3d79abbd PB |
2566 | |
2567 | current_function_decl = NULL_TREE; | |
2568 | ||
3dafb85c | 2569 | cgraph_node::finalize_function (thunk_fndecl, true); |
3d79abbd PB |
2570 | |
2571 | /* We share the symbols in the formal argument list with other entry | |
2572 | points and the master function. Clear them so that they are | |
2573 | recreated for each function. */ | |
4cbc9039 JW |
2574 | for (formal = gfc_sym_get_dummy_args (thunk_sym); formal; |
2575 | formal = formal->next) | |
d198b59a JJ |
2576 | if (formal->sym != NULL) /* Ignore alternate returns. */ |
2577 | { | |
2578 | formal->sym->backend_decl = NULL_TREE; | |
2579 | if (formal->sym->ts.type == BT_CHARACTER) | |
bc21d315 | 2580 | formal->sym->ts.u.cl->backend_decl = NULL_TREE; |
d198b59a JJ |
2581 | } |
2582 | ||
2583 | if (thunk_sym->attr.function) | |
3d79abbd | 2584 | { |
d198b59a | 2585 | if (thunk_sym->ts.type == BT_CHARACTER) |
bc21d315 | 2586 | thunk_sym->ts.u.cl->backend_decl = NULL_TREE; |
d198b59a | 2587 | if (thunk_sym->result->ts.type == BT_CHARACTER) |
bc21d315 | 2588 | thunk_sym->result->ts.u.cl->backend_decl = NULL_TREE; |
3d79abbd PB |
2589 | } |
2590 | } | |
c8cc8542 | 2591 | |
363aab21 | 2592 | gfc_restore_backend_locus (&old_loc); |
3d79abbd PB |
2593 | } |
2594 | ||
2595 | ||
2596 | /* Create a decl for a function, and create any thunks for alternate entry | |
fb55ca75 TB |
2597 | points. If global is true, generate the function in the global binding |
2598 | level, otherwise in the current binding level (which can be global). */ | |
3d79abbd PB |
2599 | |
2600 | void | |
fb55ca75 | 2601 | gfc_create_function_decl (gfc_namespace * ns, bool global) |
3d79abbd PB |
2602 | { |
2603 | /* Create a declaration for the master function. */ | |
fb55ca75 | 2604 | build_function_decl (ns->proc_name, global); |
3d79abbd | 2605 | |
f8d0aee5 | 2606 | /* Compile the entry thunks. */ |
3d79abbd | 2607 | if (ns->entries) |
fb55ca75 | 2608 | build_entry_thunks (ns, global); |
3d79abbd PB |
2609 | |
2610 | /* Now create the read argument list. */ | |
2611 | create_function_arglist (ns->proc_name); | |
dd2fc525 JJ |
2612 | |
2613 | if (ns->omp_declare_simd) | |
2614 | gfc_trans_omp_declare_simd (ns); | |
3d79abbd PB |
2615 | } |
2616 | ||
5f20c93a | 2617 | /* Return the decl used to hold the function return value. If |
da4c6ed8 | 2618 | parent_flag is set, the context is the parent_scope. */ |
6de9cd9a DN |
2619 | |
2620 | tree | |
5f20c93a | 2621 | gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag) |
6de9cd9a | 2622 | { |
5f20c93a PT |
2623 | tree decl; |
2624 | tree length; | |
2625 | tree this_fake_result_decl; | |
2626 | tree this_function_decl; | |
6de9cd9a DN |
2627 | |
2628 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
2629 | ||
5f20c93a PT |
2630 | if (parent_flag) |
2631 | { | |
2632 | this_fake_result_decl = parent_fake_result_decl; | |
2633 | this_function_decl = DECL_CONTEXT (current_function_decl); | |
2634 | } | |
2635 | else | |
2636 | { | |
2637 | this_fake_result_decl = current_fake_result_decl; | |
2638 | this_function_decl = current_function_decl; | |
2639 | } | |
2640 | ||
d198b59a | 2641 | if (sym |
5f20c93a | 2642 | && sym->ns->proc_name->backend_decl == this_function_decl |
417ab240 | 2643 | && sym->ns->proc_name->attr.entry_master |
d198b59a JJ |
2644 | && sym != sym->ns->proc_name) |
2645 | { | |
417ab240 | 2646 | tree t = NULL, var; |
5f20c93a PT |
2647 | if (this_fake_result_decl != NULL) |
2648 | for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t)) | |
417ab240 JJ |
2649 | if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0) |
2650 | break; | |
2651 | if (t) | |
2652 | return TREE_VALUE (t); | |
5f20c93a PT |
2653 | decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag); |
2654 | ||
2655 | if (parent_flag) | |
2656 | this_fake_result_decl = parent_fake_result_decl; | |
2657 | else | |
2658 | this_fake_result_decl = current_fake_result_decl; | |
2659 | ||
417ab240 | 2660 | if (decl && sym->ns->proc_name->attr.mixed_entry_master) |
d198b59a JJ |
2661 | { |
2662 | tree field; | |
2663 | ||
2664 | for (field = TYPE_FIELDS (TREE_TYPE (decl)); | |
910ad8de | 2665 | field; field = DECL_CHAIN (field)) |
d198b59a JJ |
2666 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2667 | sym->name) == 0) | |
2668 | break; | |
2669 | ||
2670 | gcc_assert (field != NULL_TREE); | |
bc98ed60 TB |
2671 | decl = fold_build3_loc (input_location, COMPONENT_REF, |
2672 | TREE_TYPE (field), decl, field, NULL_TREE); | |
d198b59a | 2673 | } |
5f20c93a PT |
2674 | |
2675 | var = create_tmp_var_raw (TREE_TYPE (decl), sym->name); | |
2676 | if (parent_flag) | |
2677 | gfc_add_decl_to_parent_function (var); | |
2678 | else | |
2679 | gfc_add_decl_to_function (var); | |
2680 | ||
417ab240 JJ |
2681 | SET_DECL_VALUE_EXPR (var, decl); |
2682 | DECL_HAS_VALUE_EXPR_P (var) = 1; | |
4b8ae4db | 2683 | GFC_DECL_RESULT (var) = 1; |
5f20c93a PT |
2684 | |
2685 | TREE_CHAIN (this_fake_result_decl) | |
2686 | = tree_cons (get_identifier (sym->name), var, | |
2687 | TREE_CHAIN (this_fake_result_decl)); | |
417ab240 | 2688 | return var; |
d198b59a JJ |
2689 | } |
2690 | ||
5f20c93a PT |
2691 | if (this_fake_result_decl != NULL_TREE) |
2692 | return TREE_VALUE (this_fake_result_decl); | |
6de9cd9a DN |
2693 | |
2694 | /* Only when gfc_get_fake_result_decl is called by gfc_trans_return, | |
2695 | sym is NULL. */ | |
2696 | if (!sym) | |
2697 | return NULL_TREE; | |
2698 | ||
417ab240 | 2699 | if (sym->ts.type == BT_CHARACTER) |
6de9cd9a | 2700 | { |
bc21d315 | 2701 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
417ab240 JJ |
2702 | length = gfc_create_string_length (sym); |
2703 | else | |
bc21d315 | 2704 | length = sym->ts.u.cl->backend_decl; |
417ab240 JJ |
2705 | if (TREE_CODE (length) == VAR_DECL |
2706 | && DECL_CONTEXT (length) == NULL_TREE) | |
a7d6b765 | 2707 | gfc_add_decl_to_function (length); |
6de9cd9a DN |
2708 | } |
2709 | ||
2710 | if (gfc_return_by_reference (sym)) | |
2711 | { | |
5f20c93a | 2712 | decl = DECL_ARGUMENTS (this_function_decl); |
d198b59a | 2713 | |
5f20c93a | 2714 | if (sym->ns->proc_name->backend_decl == this_function_decl |
d198b59a | 2715 | && sym->ns->proc_name->attr.entry_master) |
910ad8de | 2716 | decl = DECL_CHAIN (decl); |
6de9cd9a DN |
2717 | |
2718 | TREE_USED (decl) = 1; | |
2719 | if (sym->as) | |
2720 | decl = gfc_build_dummy_array_decl (sym, decl); | |
2721 | } | |
2722 | else | |
2723 | { | |
2724 | sprintf (name, "__result_%.20s", | |
5f20c93a | 2725 | IDENTIFIER_POINTER (DECL_NAME (this_function_decl))); |
6de9cd9a | 2726 | |
da4c6ed8 | 2727 | if (!sym->attr.mixed_entry_master && sym->attr.function) |
88e09c79 | 2728 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
c2255bc4 | 2729 | VAR_DECL, get_identifier (name), |
da4c6ed8 TS |
2730 | gfc_sym_type (sym)); |
2731 | else | |
88e09c79 | 2732 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
c2255bc4 | 2733 | VAR_DECL, get_identifier (name), |
da4c6ed8 | 2734 | TREE_TYPE (TREE_TYPE (this_function_decl))); |
6de9cd9a DN |
2735 | DECL_ARTIFICIAL (decl) = 1; |
2736 | DECL_EXTERNAL (decl) = 0; | |
2737 | TREE_PUBLIC (decl) = 0; | |
2738 | TREE_USED (decl) = 1; | |
6c7a4dfd | 2739 | GFC_DECL_RESULT (decl) = 1; |
c55cebda | 2740 | TREE_ADDRESSABLE (decl) = 1; |
6de9cd9a DN |
2741 | |
2742 | layout_decl (decl, 0); | |
92d28cbb | 2743 | gfc_finish_decl_attrs (decl, &sym->attr); |
6de9cd9a | 2744 | |
5f20c93a PT |
2745 | if (parent_flag) |
2746 | gfc_add_decl_to_parent_function (decl); | |
2747 | else | |
2748 | gfc_add_decl_to_function (decl); | |
6de9cd9a DN |
2749 | } |
2750 | ||
5f20c93a PT |
2751 | if (parent_flag) |
2752 | parent_fake_result_decl = build_tree_list (NULL, decl); | |
2753 | else | |
2754 | current_fake_result_decl = build_tree_list (NULL, decl); | |
6de9cd9a DN |
2755 | |
2756 | return decl; | |
2757 | } | |
2758 | ||
2759 | ||
2760 | /* Builds a function decl. The remaining parameters are the types of the | |
2761 | function arguments. Negative nargs indicates a varargs function. */ | |
2762 | ||
0b7b376d RG |
2763 | static tree |
2764 | build_library_function_decl_1 (tree name, const char *spec, | |
2765 | tree rettype, int nargs, va_list p) | |
6de9cd9a | 2766 | { |
9771b263 | 2767 | vec<tree, va_gc> *arglist; |
6de9cd9a DN |
2768 | tree fntype; |
2769 | tree fndecl; | |
6de9cd9a DN |
2770 | int n; |
2771 | ||
2772 | /* Library functions must be declared with global scope. */ | |
6e45f57b | 2773 | gcc_assert (current_function_decl == NULL_TREE); |
6de9cd9a | 2774 | |
6de9cd9a | 2775 | /* Create a list of the argument types. */ |
9771b263 | 2776 | vec_alloc (arglist, abs (nargs)); |
6c32445b | 2777 | for (n = abs (nargs); n > 0; n--) |
6de9cd9a | 2778 | { |
6c32445b | 2779 | tree argtype = va_arg (p, tree); |
9771b263 | 2780 | arglist->quick_push (argtype); |
6de9cd9a DN |
2781 | } |
2782 | ||
2783 | /* Build the function type and decl. */ | |
6c32445b NF |
2784 | if (nargs >= 0) |
2785 | fntype = build_function_type_vec (rettype, arglist); | |
2786 | else | |
2787 | fntype = build_varargs_function_type_vec (rettype, arglist); | |
0b7b376d RG |
2788 | if (spec) |
2789 | { | |
2790 | tree attr_args = build_tree_list (NULL_TREE, | |
2791 | build_string (strlen (spec), spec)); | |
2792 | tree attrs = tree_cons (get_identifier ("fn spec"), | |
2793 | attr_args, TYPE_ATTRIBUTES (fntype)); | |
2794 | fntype = build_type_attribute_variant (fntype, attrs); | |
2795 | } | |
c2255bc4 AH |
2796 | fndecl = build_decl (input_location, |
2797 | FUNCTION_DECL, name, fntype); | |
6de9cd9a DN |
2798 | |
2799 | /* Mark this decl as external. */ | |
2800 | DECL_EXTERNAL (fndecl) = 1; | |
2801 | TREE_PUBLIC (fndecl) = 1; | |
2802 | ||
6de9cd9a DN |
2803 | pushdecl (fndecl); |
2804 | ||
0e6df31e | 2805 | rest_of_decl_compilation (fndecl, 1, 0); |
6de9cd9a DN |
2806 | |
2807 | return fndecl; | |
2808 | } | |
2809 | ||
0b7b376d RG |
2810 | /* Builds a function decl. The remaining parameters are the types of the |
2811 | function arguments. Negative nargs indicates a varargs function. */ | |
2812 | ||
2813 | tree | |
2814 | gfc_build_library_function_decl (tree name, tree rettype, int nargs, ...) | |
2815 | { | |
2816 | tree ret; | |
2817 | va_list args; | |
2818 | va_start (args, nargs); | |
2819 | ret = build_library_function_decl_1 (name, NULL, rettype, nargs, args); | |
2820 | va_end (args); | |
2821 | return ret; | |
2822 | } | |
2823 | ||
2824 | /* Builds a function decl. The remaining parameters are the types of the | |
2825 | function arguments. Negative nargs indicates a varargs function. | |
2826 | The SPEC parameter specifies the function argument and return type | |
2827 | specification according to the fnspec function type attribute. */ | |
2828 | ||
3f34855a | 2829 | tree |
0b7b376d RG |
2830 | gfc_build_library_function_decl_with_spec (tree name, const char *spec, |
2831 | tree rettype, int nargs, ...) | |
2832 | { | |
2833 | tree ret; | |
2834 | va_list args; | |
2835 | va_start (args, nargs); | |
2836 | ret = build_library_function_decl_1 (name, spec, rettype, nargs, args); | |
2837 | va_end (args); | |
2838 | return ret; | |
2839 | } | |
2840 | ||
6de9cd9a DN |
2841 | static void |
2842 | gfc_build_intrinsic_function_decls (void) | |
2843 | { | |
e2cad04b | 2844 | tree gfc_int4_type_node = gfc_get_int_type (4); |
a416c4c7 | 2845 | tree gfc_pint4_type_node = build_pointer_type (gfc_int4_type_node); |
e2cad04b | 2846 | tree gfc_int8_type_node = gfc_get_int_type (8); |
a416c4c7 | 2847 | tree gfc_pint8_type_node = build_pointer_type (gfc_int8_type_node); |
644cb69f | 2848 | tree gfc_int16_type_node = gfc_get_int_type (16); |
e2cad04b | 2849 | tree gfc_logical4_type_node = gfc_get_logical_type (4); |
374929b2 FXC |
2850 | tree pchar1_type_node = gfc_get_pchar_type (1); |
2851 | tree pchar4_type_node = gfc_get_pchar_type (4); | |
e2cad04b | 2852 | |
6de9cd9a | 2853 | /* String functions. */ |
6368f166 DF |
2854 | gfor_fndecl_compare_string = gfc_build_library_function_decl_with_spec ( |
2855 | get_identifier (PREFIX("compare_string")), "..R.R", | |
2856 | integer_type_node, 4, gfc_charlen_type_node, pchar1_type_node, | |
2857 | gfc_charlen_type_node, pchar1_type_node); | |
4ca4be7f | 2858 | DECL_PURE_P (gfor_fndecl_compare_string) = 1; |
22b139e1 | 2859 | TREE_NOTHROW (gfor_fndecl_compare_string) = 1; |
6368f166 DF |
2860 | |
2861 | gfor_fndecl_concat_string = gfc_build_library_function_decl_with_spec ( | |
2862 | get_identifier (PREFIX("concat_string")), "..W.R.R", | |
2863 | void_type_node, 6, gfc_charlen_type_node, pchar1_type_node, | |
2864 | gfc_charlen_type_node, pchar1_type_node, | |
2865 | gfc_charlen_type_node, pchar1_type_node); | |
22b139e1 | 2866 | TREE_NOTHROW (gfor_fndecl_concat_string) = 1; |
6368f166 DF |
2867 | |
2868 | gfor_fndecl_string_len_trim = gfc_build_library_function_decl_with_spec ( | |
2869 | get_identifier (PREFIX("string_len_trim")), "..R", | |
2870 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar1_type_node); | |
4ca4be7f | 2871 | DECL_PURE_P (gfor_fndecl_string_len_trim) = 1; |
22b139e1 | 2872 | TREE_NOTHROW (gfor_fndecl_string_len_trim) = 1; |
6368f166 DF |
2873 | |
2874 | gfor_fndecl_string_index = gfc_build_library_function_decl_with_spec ( | |
2875 | get_identifier (PREFIX("string_index")), "..R.R.", | |
2876 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2877 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2878 | DECL_PURE_P (gfor_fndecl_string_index) = 1; |
22b139e1 | 2879 | TREE_NOTHROW (gfor_fndecl_string_index) = 1; |
6368f166 DF |
2880 | |
2881 | gfor_fndecl_string_scan = gfc_build_library_function_decl_with_spec ( | |
2882 | get_identifier (PREFIX("string_scan")), "..R.R.", | |
2883 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2884 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2885 | DECL_PURE_P (gfor_fndecl_string_scan) = 1; |
22b139e1 | 2886 | TREE_NOTHROW (gfor_fndecl_string_scan) = 1; |
6368f166 DF |
2887 | |
2888 | gfor_fndecl_string_verify = gfc_build_library_function_decl_with_spec ( | |
2889 | get_identifier (PREFIX("string_verify")), "..R.R.", | |
2890 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2891 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2892 | DECL_PURE_P (gfor_fndecl_string_verify) = 1; |
22b139e1 | 2893 | TREE_NOTHROW (gfor_fndecl_string_verify) = 1; |
6368f166 DF |
2894 | |
2895 | gfor_fndecl_string_trim = gfc_build_library_function_decl_with_spec ( | |
2896 | get_identifier (PREFIX("string_trim")), ".Ww.R", | |
2897 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2898 | build_pointer_type (pchar1_type_node), gfc_charlen_type_node, | |
2899 | pchar1_type_node); | |
2900 | ||
2901 | gfor_fndecl_string_minmax = gfc_build_library_function_decl_with_spec ( | |
2902 | get_identifier (PREFIX("string_minmax")), ".Ww.R", | |
2903 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2904 | build_pointer_type (pchar1_type_node), integer_type_node, | |
2905 | integer_type_node); | |
2906 | ||
2907 | gfor_fndecl_adjustl = gfc_build_library_function_decl_with_spec ( | |
2908 | get_identifier (PREFIX("adjustl")), ".W.R", | |
2909 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2910 | pchar1_type_node); | |
22b139e1 | 2911 | TREE_NOTHROW (gfor_fndecl_adjustl) = 1; |
6368f166 DF |
2912 | |
2913 | gfor_fndecl_adjustr = gfc_build_library_function_decl_with_spec ( | |
2914 | get_identifier (PREFIX("adjustr")), ".W.R", | |
2915 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2916 | pchar1_type_node); | |
22b139e1 | 2917 | TREE_NOTHROW (gfor_fndecl_adjustr) = 1; |
6368f166 DF |
2918 | |
2919 | gfor_fndecl_select_string = gfc_build_library_function_decl_with_spec ( | |
2920 | get_identifier (PREFIX("select_string")), ".R.R.", | |
2921 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2922 | pchar1_type_node, gfc_charlen_type_node); | |
4ca4be7f | 2923 | DECL_PURE_P (gfor_fndecl_select_string) = 1; |
22b139e1 | 2924 | TREE_NOTHROW (gfor_fndecl_select_string) = 1; |
6368f166 DF |
2925 | |
2926 | gfor_fndecl_compare_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2927 | get_identifier (PREFIX("compare_string_char4")), "..R.R", | |
2928 | integer_type_node, 4, gfc_charlen_type_node, pchar4_type_node, | |
2929 | gfc_charlen_type_node, pchar4_type_node); | |
4ca4be7f | 2930 | DECL_PURE_P (gfor_fndecl_compare_string_char4) = 1; |
22b139e1 | 2931 | TREE_NOTHROW (gfor_fndecl_compare_string_char4) = 1; |
6368f166 DF |
2932 | |
2933 | gfor_fndecl_concat_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2934 | get_identifier (PREFIX("concat_string_char4")), "..W.R.R", | |
2935 | void_type_node, 6, gfc_charlen_type_node, pchar4_type_node, | |
2936 | gfc_charlen_type_node, pchar4_type_node, gfc_charlen_type_node, | |
2937 | pchar4_type_node); | |
22b139e1 | 2938 | TREE_NOTHROW (gfor_fndecl_concat_string_char4) = 1; |
6368f166 DF |
2939 | |
2940 | gfor_fndecl_string_len_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2941 | get_identifier (PREFIX("string_len_trim_char4")), "..R", | |
2942 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar4_type_node); | |
4ca4be7f | 2943 | DECL_PURE_P (gfor_fndecl_string_len_trim_char4) = 1; |
22b139e1 | 2944 | TREE_NOTHROW (gfor_fndecl_string_len_trim_char4) = 1; |
6368f166 DF |
2945 | |
2946 | gfor_fndecl_string_index_char4 = gfc_build_library_function_decl_with_spec ( | |
2947 | get_identifier (PREFIX("string_index_char4")), "..R.R.", | |
2948 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2949 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2950 | DECL_PURE_P (gfor_fndecl_string_index_char4) = 1; |
22b139e1 | 2951 | TREE_NOTHROW (gfor_fndecl_string_index_char4) = 1; |
6368f166 DF |
2952 | |
2953 | gfor_fndecl_string_scan_char4 = gfc_build_library_function_decl_with_spec ( | |
2954 | get_identifier (PREFIX("string_scan_char4")), "..R.R.", | |
2955 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2956 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2957 | DECL_PURE_P (gfor_fndecl_string_scan_char4) = 1; |
22b139e1 | 2958 | TREE_NOTHROW (gfor_fndecl_string_scan_char4) = 1; |
6368f166 DF |
2959 | |
2960 | gfor_fndecl_string_verify_char4 = gfc_build_library_function_decl_with_spec ( | |
2961 | get_identifier (PREFIX("string_verify_char4")), "..R.R.", | |
2962 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2963 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2964 | DECL_PURE_P (gfor_fndecl_string_verify_char4) = 1; |
22b139e1 | 2965 | TREE_NOTHROW (gfor_fndecl_string_verify_char4) = 1; |
6368f166 DF |
2966 | |
2967 | gfor_fndecl_string_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2968 | get_identifier (PREFIX("string_trim_char4")), ".Ww.R", | |
2969 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2970 | build_pointer_type (pchar4_type_node), gfc_charlen_type_node, | |
2971 | pchar4_type_node); | |
2972 | ||
2973 | gfor_fndecl_string_minmax_char4 = gfc_build_library_function_decl_with_spec ( | |
2974 | get_identifier (PREFIX("string_minmax_char4")), ".Ww.R", | |
2975 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2976 | build_pointer_type (pchar4_type_node), integer_type_node, | |
2977 | integer_type_node); | |
2978 | ||
2979 | gfor_fndecl_adjustl_char4 = gfc_build_library_function_decl_with_spec ( | |
2980 | get_identifier (PREFIX("adjustl_char4")), ".W.R", | |
2981 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2982 | pchar4_type_node); | |
22b139e1 | 2983 | TREE_NOTHROW (gfor_fndecl_adjustl_char4) = 1; |
6368f166 DF |
2984 | |
2985 | gfor_fndecl_adjustr_char4 = gfc_build_library_function_decl_with_spec ( | |
2986 | get_identifier (PREFIX("adjustr_char4")), ".W.R", | |
2987 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2988 | pchar4_type_node); | |
22b139e1 | 2989 | TREE_NOTHROW (gfor_fndecl_adjustr_char4) = 1; |
6368f166 DF |
2990 | |
2991 | gfor_fndecl_select_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2992 | get_identifier (PREFIX("select_string_char4")), ".R.R.", | |
2993 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2994 | pvoid_type_node, gfc_charlen_type_node); | |
4ca4be7f | 2995 | DECL_PURE_P (gfor_fndecl_select_string_char4) = 1; |
22b139e1 | 2996 | TREE_NOTHROW (gfor_fndecl_select_string_char4) = 1; |
d393bbd7 FXC |
2997 | |
2998 | ||
2999 | /* Conversion between character kinds. */ | |
3000 | ||
6368f166 DF |
3001 | gfor_fndecl_convert_char1_to_char4 = gfc_build_library_function_decl_with_spec ( |
3002 | get_identifier (PREFIX("convert_char1_to_char4")), ".w.R", | |
3003 | void_type_node, 3, build_pointer_type (pchar4_type_node), | |
3004 | gfc_charlen_type_node, pchar1_type_node); | |
d393bbd7 | 3005 | |
6368f166 DF |
3006 | gfor_fndecl_convert_char4_to_char1 = gfc_build_library_function_decl_with_spec ( |
3007 | get_identifier (PREFIX("convert_char4_to_char1")), ".w.R", | |
3008 | void_type_node, 3, build_pointer_type (pchar1_type_node), | |
3009 | gfc_charlen_type_node, pchar4_type_node); | |
d393bbd7 | 3010 | |
374929b2 | 3011 | /* Misc. functions. */ |
2263c775 | 3012 | |
6368f166 DF |
3013 | gfor_fndecl_ttynam = gfc_build_library_function_decl_with_spec ( |
3014 | get_identifier (PREFIX("ttynam")), ".W", | |
3015 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
3016 | integer_type_node); | |
3017 | ||
3018 | gfor_fndecl_fdate = gfc_build_library_function_decl_with_spec ( | |
3019 | get_identifier (PREFIX("fdate")), ".W", | |
3020 | void_type_node, 2, pchar_type_node, gfc_charlen_type_node); | |
3021 | ||
3022 | gfor_fndecl_ctime = gfc_build_library_function_decl_with_spec ( | |
3023 | get_identifier (PREFIX("ctime")), ".W", | |
3024 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
3025 | gfc_int8_type_node); | |
3026 | ||
3027 | gfor_fndecl_sc_kind = gfc_build_library_function_decl_with_spec ( | |
3028 | get_identifier (PREFIX("selected_char_kind")), "..R", | |
3029 | gfc_int4_type_node, 2, gfc_charlen_type_node, pchar_type_node); | |
4ca4be7f | 3030 | DECL_PURE_P (gfor_fndecl_sc_kind) = 1; |
22b139e1 | 3031 | TREE_NOTHROW (gfor_fndecl_sc_kind) = 1; |
6368f166 DF |
3032 | |
3033 | gfor_fndecl_si_kind = gfc_build_library_function_decl_with_spec ( | |
3034 | get_identifier (PREFIX("selected_int_kind")), ".R", | |
3035 | gfc_int4_type_node, 1, pvoid_type_node); | |
4ca4be7f | 3036 | DECL_PURE_P (gfor_fndecl_si_kind) = 1; |
22b139e1 | 3037 | TREE_NOTHROW (gfor_fndecl_si_kind) = 1; |
6368f166 DF |
3038 | |
3039 | gfor_fndecl_sr_kind = gfc_build_library_function_decl_with_spec ( | |
3040 | get_identifier (PREFIX("selected_real_kind2008")), ".RR", | |
3041 | gfc_int4_type_node, 3, pvoid_type_node, pvoid_type_node, | |
3042 | pvoid_type_node); | |
4ca4be7f | 3043 | DECL_PURE_P (gfor_fndecl_sr_kind) = 1; |
22b139e1 | 3044 | TREE_NOTHROW (gfor_fndecl_sr_kind) = 1; |
6de9cd9a | 3045 | |
a416c4c7 FXC |
3046 | gfor_fndecl_system_clock4 = gfc_build_library_function_decl ( |
3047 | get_identifier (PREFIX("system_clock_4")), | |
3048 | void_type_node, 3, gfc_pint4_type_node, gfc_pint4_type_node, | |
3049 | gfc_pint4_type_node); | |
3050 | ||
3051 | gfor_fndecl_system_clock8 = gfc_build_library_function_decl ( | |
3052 | get_identifier (PREFIX("system_clock_8")), | |
3053 | void_type_node, 3, gfc_pint8_type_node, gfc_pint8_type_node, | |
3054 | gfc_pint8_type_node); | |
3055 | ||
6de9cd9a | 3056 | /* Power functions. */ |
5b200ac2 | 3057 | { |
644cb69f FXC |
3058 | tree ctype, rtype, itype, jtype; |
3059 | int rkind, ikind, jkind; | |
3060 | #define NIKINDS 3 | |
3061 | #define NRKINDS 4 | |
3062 | static int ikinds[NIKINDS] = {4, 8, 16}; | |
3063 | static int rkinds[NRKINDS] = {4, 8, 10, 16}; | |
3064 | char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */ | |
3065 | ||
3066 | for (ikind=0; ikind < NIKINDS; ikind++) | |
5b200ac2 | 3067 | { |
644cb69f FXC |
3068 | itype = gfc_get_int_type (ikinds[ikind]); |
3069 | ||
3070 | for (jkind=0; jkind < NIKINDS; jkind++) | |
3071 | { | |
3072 | jtype = gfc_get_int_type (ikinds[jkind]); | |
3073 | if (itype && jtype) | |
3074 | { | |
3075 | sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind], | |
3076 | ikinds[jkind]); | |
3077 | gfor_fndecl_math_powi[jkind][ikind].integer = | |
3078 | gfc_build_library_function_decl (get_identifier (name), | |
3079 | jtype, 2, jtype, itype); | |
67fdae36 | 3080 | TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
22b139e1 | 3081 | TREE_NOTHROW (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
644cb69f FXC |
3082 | } |
3083 | } | |
3084 | ||
3085 | for (rkind = 0; rkind < NRKINDS; rkind ++) | |
5b200ac2 | 3086 | { |
644cb69f FXC |
3087 | rtype = gfc_get_real_type (rkinds[rkind]); |
3088 | if (rtype && itype) | |
3089 | { | |
3090 | sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind], | |
3091 | ikinds[ikind]); | |
3092 | gfor_fndecl_math_powi[rkind][ikind].real = | |
3093 | gfc_build_library_function_decl (get_identifier (name), | |
3094 | rtype, 2, rtype, itype); | |
67fdae36 | 3095 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
22b139e1 | 3096 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
644cb69f FXC |
3097 | } |
3098 | ||
3099 | ctype = gfc_get_complex_type (rkinds[rkind]); | |
3100 | if (ctype && itype) | |
3101 | { | |
3102 | sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind], | |
3103 | ikinds[ikind]); | |
3104 | gfor_fndecl_math_powi[rkind][ikind].cmplx = | |
3105 | gfc_build_library_function_decl (get_identifier (name), | |
3106 | ctype, 2,ctype, itype); | |
67fdae36 | 3107 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
22b139e1 | 3108 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
644cb69f | 3109 | } |
5b200ac2 FW |
3110 | } |
3111 | } | |
644cb69f FXC |
3112 | #undef NIKINDS |
3113 | #undef NRKINDS | |
5b200ac2 FW |
3114 | } |
3115 | ||
6368f166 DF |
3116 | gfor_fndecl_math_ishftc4 = gfc_build_library_function_decl ( |
3117 | get_identifier (PREFIX("ishftc4")), | |
3118 | gfc_int4_type_node, 3, gfc_int4_type_node, gfc_int4_type_node, | |
3119 | gfc_int4_type_node); | |
22b139e1 JJ |
3120 | TREE_READONLY (gfor_fndecl_math_ishftc4) = 1; |
3121 | TREE_NOTHROW (gfor_fndecl_math_ishftc4) = 1; | |
8b704316 | 3122 | |
6368f166 DF |
3123 | gfor_fndecl_math_ishftc8 = gfc_build_library_function_decl ( |
3124 | get_identifier (PREFIX("ishftc8")), | |
3125 | gfc_int8_type_node, 3, gfc_int8_type_node, gfc_int4_type_node, | |
3126 | gfc_int4_type_node); | |
22b139e1 JJ |
3127 | TREE_READONLY (gfor_fndecl_math_ishftc8) = 1; |
3128 | TREE_NOTHROW (gfor_fndecl_math_ishftc8) = 1; | |
6368f166 | 3129 | |
644cb69f | 3130 | if (gfc_int16_type_node) |
22b139e1 JJ |
3131 | { |
3132 | gfor_fndecl_math_ishftc16 = gfc_build_library_function_decl ( | |
6368f166 DF |
3133 | get_identifier (PREFIX("ishftc16")), |
3134 | gfc_int16_type_node, 3, gfc_int16_type_node, gfc_int4_type_node, | |
3135 | gfc_int4_type_node); | |
22b139e1 JJ |
3136 | TREE_READONLY (gfor_fndecl_math_ishftc16) = 1; |
3137 | TREE_NOTHROW (gfor_fndecl_math_ishftc16) = 1; | |
3138 | } | |
644cb69f | 3139 | |
5a0aad31 FXC |
3140 | /* BLAS functions. */ |
3141 | { | |
dd52ecb0 | 3142 | tree pint = build_pointer_type (integer_type_node); |
5a0aad31 FXC |
3143 | tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind)); |
3144 | tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind)); | |
3145 | tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind)); | |
3146 | tree pz = build_pointer_type | |
3147 | (gfc_get_complex_type (gfc_default_double_kind)); | |
3148 | ||
3149 | gfor_fndecl_sgemm = gfc_build_library_function_decl | |
3150 | (get_identifier | |
3151 | (gfc_option.flag_underscoring ? "sgemm_" | |
3152 | : "sgemm"), | |
3153 | void_type_node, 15, pchar_type_node, | |
3154 | pchar_type_node, pint, pint, pint, ps, ps, pint, | |
dd52ecb0 JB |
3155 | ps, pint, ps, ps, pint, integer_type_node, |
3156 | integer_type_node); | |
5a0aad31 FXC |
3157 | gfor_fndecl_dgemm = gfc_build_library_function_decl |
3158 | (get_identifier | |
3159 | (gfc_option.flag_underscoring ? "dgemm_" | |
3160 | : "dgemm"), | |
3161 | void_type_node, 15, pchar_type_node, | |
3162 | pchar_type_node, pint, pint, pint, pd, pd, pint, | |
dd52ecb0 JB |
3163 | pd, pint, pd, pd, pint, integer_type_node, |
3164 | integer_type_node); | |
5a0aad31 FXC |
3165 | gfor_fndecl_cgemm = gfc_build_library_function_decl |
3166 | (get_identifier | |
3167 | (gfc_option.flag_underscoring ? "cgemm_" | |
3168 | : "cgemm"), | |
3169 | void_type_node, 15, pchar_type_node, | |
3170 | pchar_type_node, pint, pint, pint, pc, pc, pint, | |
dd52ecb0 JB |
3171 | pc, pint, pc, pc, pint, integer_type_node, |
3172 | integer_type_node); | |
5a0aad31 FXC |
3173 | gfor_fndecl_zgemm = gfc_build_library_function_decl |
3174 | (get_identifier | |
3175 | (gfc_option.flag_underscoring ? "zgemm_" | |
3176 | : "zgemm"), | |
3177 | void_type_node, 15, pchar_type_node, | |
3178 | pchar_type_node, pint, pint, pint, pz, pz, pint, | |
dd52ecb0 JB |
3179 | pz, pint, pz, pz, pint, integer_type_node, |
3180 | integer_type_node); | |
5a0aad31 FXC |
3181 | } |
3182 | ||
6de9cd9a | 3183 | /* Other functions. */ |
6368f166 DF |
3184 | gfor_fndecl_size0 = gfc_build_library_function_decl_with_spec ( |
3185 | get_identifier (PREFIX("size0")), ".R", | |
3186 | gfc_array_index_type, 1, pvoid_type_node); | |
4ca4be7f | 3187 | DECL_PURE_P (gfor_fndecl_size0) = 1; |
22b139e1 | 3188 | TREE_NOTHROW (gfor_fndecl_size0) = 1; |
6368f166 DF |
3189 | |
3190 | gfor_fndecl_size1 = gfc_build_library_function_decl_with_spec ( | |
3191 | get_identifier (PREFIX("size1")), ".R", | |
3192 | gfc_array_index_type, 2, pvoid_type_node, gfc_array_index_type); | |
4ca4be7f | 3193 | DECL_PURE_P (gfor_fndecl_size1) = 1; |
22b139e1 | 3194 | TREE_NOTHROW (gfor_fndecl_size1) = 1; |
6368f166 DF |
3195 | |
3196 | gfor_fndecl_iargc = gfc_build_library_function_decl ( | |
3197 | get_identifier (PREFIX ("iargc")), gfc_int4_type_node, 0); | |
22b139e1 | 3198 | TREE_NOTHROW (gfor_fndecl_iargc) = 1; |
6de9cd9a DN |
3199 | } |
3200 | ||
3201 | ||
3202 | /* Make prototypes for runtime library functions. */ | |
3203 | ||
3204 | void | |
3205 | gfc_build_builtin_function_decls (void) | |
3206 | { | |
e2cad04b | 3207 | tree gfc_int4_type_node = gfc_get_int_type (4); |
6de9cd9a | 3208 | |
6368f166 DF |
3209 | gfor_fndecl_stop_numeric = gfc_build_library_function_decl ( |
3210 | get_identifier (PREFIX("stop_numeric")), | |
3211 | void_type_node, 1, gfc_int4_type_node); | |
6d1b0f92 | 3212 | /* STOP doesn't return. */ |
eed61baa TK |
3213 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1; |
3214 | ||
cea59ace JD |
3215 | gfor_fndecl_stop_numeric_f08 = gfc_build_library_function_decl ( |
3216 | get_identifier (PREFIX("stop_numeric_f08")), | |
3217 | void_type_node, 1, gfc_int4_type_node); | |
3218 | /* STOP doesn't return. */ | |
3219 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric_f08) = 1; | |
3220 | ||
6368f166 DF |
3221 | gfor_fndecl_stop_string = gfc_build_library_function_decl_with_spec ( |
3222 | get_identifier (PREFIX("stop_string")), ".R.", | |
3223 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
6d1b0f92 | 3224 | /* STOP doesn't return. */ |
6368f166 | 3225 | TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1; |
4ca4be7f | 3226 | |
6368f166 DF |
3227 | gfor_fndecl_error_stop_numeric = gfc_build_library_function_decl ( |
3228 | get_identifier (PREFIX("error_stop_numeric")), | |
3229 | void_type_node, 1, gfc_int4_type_node); | |
6d1b0f92 JD |
3230 | /* ERROR STOP doesn't return. */ |
3231 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_numeric) = 1; | |
3232 | ||
6368f166 DF |
3233 | gfor_fndecl_error_stop_string = gfc_build_library_function_decl_with_spec ( |
3234 | get_identifier (PREFIX("error_stop_string")), ".R.", | |
3235 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
d0a4a61c TB |
3236 | /* ERROR STOP doesn't return. */ |
3237 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_string) = 1; | |
3238 | ||
6368f166 DF |
3239 | gfor_fndecl_pause_numeric = gfc_build_library_function_decl ( |
3240 | get_identifier (PREFIX("pause_numeric")), | |
3241 | void_type_node, 1, gfc_int4_type_node); | |
6d1b0f92 | 3242 | |
6368f166 DF |
3243 | gfor_fndecl_pause_string = gfc_build_library_function_decl_with_spec ( |
3244 | get_identifier (PREFIX("pause_string")), ".R.", | |
3245 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
6de9cd9a | 3246 | |
6368f166 DF |
3247 | gfor_fndecl_runtime_error = gfc_build_library_function_decl_with_spec ( |
3248 | get_identifier (PREFIX("runtime_error")), ".R", | |
3249 | void_type_node, -1, pchar_type_node); | |
16275f18 SB |
3250 | /* The runtime_error function does not return. */ |
3251 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1; | |
6de9cd9a | 3252 | |
6368f166 DF |
3253 | gfor_fndecl_runtime_error_at = gfc_build_library_function_decl_with_spec ( |
3254 | get_identifier (PREFIX("runtime_error_at")), ".RR", | |
3255 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
f96d606f JD |
3256 | /* The runtime_error_at function does not return. */ |
3257 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1; | |
8b704316 | 3258 | |
6368f166 DF |
3259 | gfor_fndecl_runtime_warning_at = gfc_build_library_function_decl_with_spec ( |
3260 | get_identifier (PREFIX("runtime_warning_at")), ".RR", | |
3261 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
3262 | ||
3263 | gfor_fndecl_generate_error = gfc_build_library_function_decl_with_spec ( | |
3264 | get_identifier (PREFIX("generate_error")), ".R.R", | |
3265 | void_type_node, 3, pvoid_type_node, integer_type_node, | |
3266 | pchar_type_node); | |
3267 | ||
3268 | gfor_fndecl_os_error = gfc_build_library_function_decl_with_spec ( | |
3269 | get_identifier (PREFIX("os_error")), ".R", | |
3270 | void_type_node, 1, pchar_type_node); | |
1529b8d9 FXC |
3271 | /* The runtime_error function does not return. */ |
3272 | TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1; | |
3273 | ||
6368f166 DF |
3274 | gfor_fndecl_set_args = gfc_build_library_function_decl ( |
3275 | get_identifier (PREFIX("set_args")), | |
3276 | void_type_node, 2, integer_type_node, | |
3277 | build_pointer_type (pchar_type_node)); | |
092231a8 | 3278 | |
6368f166 DF |
3279 | gfor_fndecl_set_fpe = gfc_build_library_function_decl ( |
3280 | get_identifier (PREFIX("set_fpe")), | |
3281 | void_type_node, 1, integer_type_node); | |
944b8b35 | 3282 | |
8b198102 FXC |
3283 | gfor_fndecl_ieee_procedure_entry = gfc_build_library_function_decl ( |
3284 | get_identifier (PREFIX("ieee_procedure_entry")), | |
3285 | void_type_node, 1, pvoid_type_node); | |
3286 | ||
3287 | gfor_fndecl_ieee_procedure_exit = gfc_build_library_function_decl ( | |
3288 | get_identifier (PREFIX("ieee_procedure_exit")), | |
3289 | void_type_node, 1, pvoid_type_node); | |
3290 | ||
68d2e027 | 3291 | /* Keep the array dimension in sync with the call, later in this file. */ |
6368f166 DF |
3292 | gfor_fndecl_set_options = gfc_build_library_function_decl_with_spec ( |
3293 | get_identifier (PREFIX("set_options")), "..R", | |
3294 | void_type_node, 2, integer_type_node, | |
3295 | build_pointer_type (integer_type_node)); | |
8b67b708 | 3296 | |
6368f166 DF |
3297 | gfor_fndecl_set_convert = gfc_build_library_function_decl ( |
3298 | get_identifier (PREFIX("set_convert")), | |
3299 | void_type_node, 1, integer_type_node); | |
eaa90d25 | 3300 | |
6368f166 DF |
3301 | gfor_fndecl_set_record_marker = gfc_build_library_function_decl ( |
3302 | get_identifier (PREFIX("set_record_marker")), | |
3303 | void_type_node, 1, integer_type_node); | |
d67ab5ee | 3304 | |
6368f166 DF |
3305 | gfor_fndecl_set_max_subrecord_length = gfc_build_library_function_decl ( |
3306 | get_identifier (PREFIX("set_max_subrecord_length")), | |
3307 | void_type_node, 1, integer_type_node); | |
07b3bbf2 | 3308 | |
0b7b376d | 3309 | gfor_fndecl_in_pack = gfc_build_library_function_decl_with_spec ( |
6368f166 DF |
3310 | get_identifier (PREFIX("internal_pack")), ".r", |
3311 | pvoid_type_node, 1, pvoid_type_node); | |
6de9cd9a | 3312 | |
0b7b376d | 3313 | gfor_fndecl_in_unpack = gfc_build_library_function_decl_with_spec ( |
6368f166 DF |
3314 | get_identifier (PREFIX("internal_unpack")), ".wR", |
3315 | void_type_node, 2, pvoid_type_node, pvoid_type_node); | |
3316 | ||
3317 | gfor_fndecl_associated = gfc_build_library_function_decl_with_spec ( | |
3318 | get_identifier (PREFIX("associated")), ".RR", | |
3319 | integer_type_node, 2, ppvoid_type_node, ppvoid_type_node); | |
4ca4be7f | 3320 | DECL_PURE_P (gfor_fndecl_associated) = 1; |
22b139e1 | 3321 | TREE_NOTHROW (gfor_fndecl_associated) = 1; |
6de9cd9a | 3322 | |
60386f50 TB |
3323 | /* Coarray library calls. */ |
3324 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
3325 | { | |
3326 | tree pint_type, pppchar_type; | |
3327 | ||
3328 | pint_type = build_pointer_type (integer_type_node); | |
3329 | pppchar_type | |
3330 | = build_pointer_type (build_pointer_type (pchar_type_node)); | |
3331 | ||
3332 | gfor_fndecl_caf_init = gfc_build_library_function_decl ( | |
3333 | get_identifier (PREFIX("caf_init")), void_type_node, | |
242d4d3f | 3334 | 2, pint_type, pppchar_type); |
60386f50 TB |
3335 | |
3336 | gfor_fndecl_caf_finalize = gfc_build_library_function_decl ( | |
3337 | get_identifier (PREFIX("caf_finalize")), void_type_node, 0); | |
3338 | ||
a8a5f4a9 TB |
3339 | gfor_fndecl_caf_this_image = gfc_build_library_function_decl ( |
3340 | get_identifier (PREFIX("caf_this_image")), integer_type_node, | |
3341 | 1, integer_type_node); | |
3342 | ||
3343 | gfor_fndecl_caf_num_images = gfc_build_library_function_decl ( | |
3344 | get_identifier (PREFIX("caf_num_images")), integer_type_node, | |
a9fe6877 | 3345 | 2, integer_type_node, integer_type_node); |
a8a5f4a9 | 3346 | |
b8ff4e88 TB |
3347 | gfor_fndecl_caf_register = gfc_build_library_function_decl_with_spec ( |
3348 | get_identifier (PREFIX("caf_register")), "...WWW", pvoid_type_node, 6, | |
3349 | size_type_node, integer_type_node, ppvoid_type_node, pint_type, | |
5d81ddd0 TB |
3350 | pchar_type_node, integer_type_node); |
3351 | ||
3352 | gfor_fndecl_caf_deregister = gfc_build_library_function_decl_with_spec ( | |
3353 | get_identifier (PREFIX("caf_deregister")), ".WWW", void_type_node, 4, | |
3354 | ppvoid_type_node, pint_type, pchar_type_node, integer_type_node); | |
b8ff4e88 | 3355 | |
b5116268 | 3356 | gfor_fndecl_caf_get = gfc_build_library_function_decl_with_spec ( |
93e2e046 | 3357 | get_identifier (PREFIX("caf_get")), ".R.RRRW", void_type_node, 9, |
b5116268 | 3358 | pvoid_type_node, size_type_node, integer_type_node, pvoid_type_node, |
93e2e046 TB |
3359 | pvoid_type_node, pvoid_type_node, integer_type_node, integer_type_node, |
3360 | boolean_type_node); | |
b5116268 TB |
3361 | |
3362 | gfor_fndecl_caf_send = gfc_build_library_function_decl_with_spec ( | |
93e2e046 | 3363 | get_identifier (PREFIX("caf_send")), ".R.RRRR", void_type_node, 9, |
b5116268 | 3364 | pvoid_type_node, size_type_node, integer_type_node, pvoid_type_node, |
93e2e046 TB |
3365 | pvoid_type_node, pvoid_type_node, integer_type_node, integer_type_node, |
3366 | boolean_type_node); | |
b5116268 TB |
3367 | |
3368 | gfor_fndecl_caf_sendget = gfc_build_library_function_decl_with_spec ( | |
3369 | get_identifier (PREFIX("caf_sendget")), ".R.RRRR.RRR", void_type_node, | |
93e2e046 | 3370 | 13, pvoid_type_node, size_type_node, integer_type_node, pvoid_type_node, |
b5116268 | 3371 | pvoid_type_node, pvoid_type_node, size_type_node, integer_type_node, |
93e2e046 TB |
3372 | pvoid_type_node, pvoid_type_node, integer_type_node, integer_type_node, |
3373 | boolean_type_node); | |
b5116268 | 3374 | |
60386f50 | 3375 | gfor_fndecl_caf_sync_all = gfc_build_library_function_decl_with_spec ( |
f5c01f5b | 3376 | get_identifier (PREFIX("caf_sync_all")), ".WW", void_type_node, |
d62cf3df | 3377 | 3, pint_type, pchar_type_node, integer_type_node); |
60386f50 TB |
3378 | |
3379 | gfor_fndecl_caf_sync_images = gfc_build_library_function_decl_with_spec ( | |
f5c01f5b DC |
3380 | get_identifier (PREFIX("caf_sync_images")), ".RRWW", void_type_node, |
3381 | 5, integer_type_node, pint_type, pint_type, | |
d62cf3df | 3382 | pchar_type_node, integer_type_node); |
60386f50 TB |
3383 | |
3384 | gfor_fndecl_caf_error_stop = gfc_build_library_function_decl ( | |
3385 | get_identifier (PREFIX("caf_error_stop")), | |
3386 | void_type_node, 1, gfc_int4_type_node); | |
3387 | /* CAF's ERROR STOP doesn't return. */ | |
3388 | TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop) = 1; | |
3389 | ||
3390 | gfor_fndecl_caf_error_stop_str = gfc_build_library_function_decl_with_spec ( | |
3391 | get_identifier (PREFIX("caf_error_stop_str")), ".R.", | |
3392 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
3393 | /* CAF's ERROR STOP doesn't return. */ | |
3394 | TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop_str) = 1; | |
d62cf3df | 3395 | |
42a8246d TB |
3396 | gfor_fndecl_caf_atomic_def = gfc_build_library_function_decl_with_spec ( |
3397 | get_identifier (PREFIX("caf_atomic_define")), "R..RW", | |
3398 | void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node, | |
3399 | pvoid_type_node, pint_type, integer_type_node, integer_type_node); | |
3400 | ||
3401 | gfor_fndecl_caf_atomic_ref = gfc_build_library_function_decl_with_spec ( | |
3402 | get_identifier (PREFIX("caf_atomic_ref")), "R..WW", | |
3403 | void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node, | |
3404 | pvoid_type_node, pint_type, integer_type_node, integer_type_node); | |
3405 | ||
3406 | gfor_fndecl_caf_atomic_cas = gfc_build_library_function_decl_with_spec ( | |
3407 | get_identifier (PREFIX("caf_atomic_cas")), "R..WRRW", | |
3408 | void_type_node, 9, pvoid_type_node, size_type_node, integer_type_node, | |
3409 | pvoid_type_node, pvoid_type_node, pvoid_type_node, pint_type, | |
3410 | integer_type_node, integer_type_node); | |
3411 | ||
3412 | gfor_fndecl_caf_atomic_op = gfc_build_library_function_decl_with_spec ( | |
3413 | get_identifier (PREFIX("caf_atomic_op")), ".R..RWW", | |
3414 | void_type_node, 9, integer_type_node, pvoid_type_node, size_type_node, | |
3415 | integer_type_node, pvoid_type_node, pvoid_type_node, pint_type, | |
3416 | integer_type_node, integer_type_node); | |
3417 | ||
bc0229f9 TB |
3418 | gfor_fndecl_caf_lock = gfc_build_library_function_decl_with_spec ( |
3419 | get_identifier (PREFIX("caf_lock")), "R..WWW", | |
3420 | void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node, | |
3421 | pint_type, pint_type, pchar_type_node, integer_type_node); | |
3422 | ||
3423 | gfor_fndecl_caf_unlock = gfc_build_library_function_decl_with_spec ( | |
3424 | get_identifier (PREFIX("caf_unlock")), "R..WW", | |
772e797a | 3425 | void_type_node, 6, pvoid_type_node, size_type_node, integer_type_node, |
bc0229f9 TB |
3426 | pint_type, pchar_type_node, integer_type_node); |
3427 | ||
a16ee379 TB |
3428 | gfor_fndecl_co_broadcast = gfc_build_library_function_decl_with_spec ( |
3429 | get_identifier (PREFIX("caf_co_broadcast")), "W.WW", | |
3430 | void_type_node, 5, pvoid_type_node, integer_type_node, | |
3431 | pint_type, pchar_type_node, integer_type_node); | |
3432 | ||
d62cf3df | 3433 | gfor_fndecl_co_max = gfc_build_library_function_decl_with_spec ( |
b5116268 TB |
3434 | get_identifier (PREFIX("caf_co_max")), "W.WW", |
3435 | void_type_node, 6, pvoid_type_node, integer_type_node, | |
d62cf3df TB |
3436 | pint_type, pchar_type_node, integer_type_node, integer_type_node); |
3437 | ||
3438 | gfor_fndecl_co_min = gfc_build_library_function_decl_with_spec ( | |
b5116268 TB |
3439 | get_identifier (PREFIX("caf_co_min")), "W.WW", |
3440 | void_type_node, 6, pvoid_type_node, integer_type_node, | |
d62cf3df TB |
3441 | pint_type, pchar_type_node, integer_type_node, integer_type_node); |
3442 | ||
3443 | gfor_fndecl_co_sum = gfc_build_library_function_decl_with_spec ( | |
b5116268 TB |
3444 | get_identifier (PREFIX("caf_co_sum")), "W.WW", |
3445 | void_type_node, 5, pvoid_type_node, integer_type_node, | |
d62cf3df | 3446 | pint_type, pchar_type_node, integer_type_node); |
60386f50 TB |
3447 | } |
3448 | ||
6de9cd9a DN |
3449 | gfc_build_intrinsic_function_decls (); |
3450 | gfc_build_intrinsic_lib_fndecls (); | |
3451 | gfc_build_io_library_fndecls (); | |
3452 | } | |
3453 | ||
3454 | ||
1f2959f0 | 3455 | /* Evaluate the length of dummy character variables. */ |
6de9cd9a | 3456 | |
0019d498 DK |
3457 | static void |
3458 | gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, | |
3459 | gfc_wrapped_block *block) | |
6de9cd9a | 3460 | { |
0019d498 | 3461 | stmtblock_t init; |
6de9cd9a | 3462 | |
faf28b3a | 3463 | gfc_finish_decl (cl->backend_decl); |
6de9cd9a | 3464 | |
0019d498 | 3465 | gfc_start_block (&init); |
6de9cd9a DN |
3466 | |
3467 | /* Evaluate the string length expression. */ | |
0019d498 | 3468 | gfc_conv_string_length (cl, NULL, &init); |
417ab240 | 3469 | |
0019d498 | 3470 | gfc_trans_vla_type_sizes (sym, &init); |
417ab240 | 3471 | |
0019d498 | 3472 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
6de9cd9a DN |
3473 | } |
3474 | ||
3475 | ||
3476 | /* Allocate and cleanup an automatic character variable. */ | |
3477 | ||
0019d498 DK |
3478 | static void |
3479 | gfc_trans_auto_character_variable (gfc_symbol * sym, gfc_wrapped_block * block) | |
6de9cd9a | 3480 | { |
0019d498 | 3481 | stmtblock_t init; |
6de9cd9a | 3482 | tree decl; |
6de9cd9a DN |
3483 | tree tmp; |
3484 | ||
6e45f57b | 3485 | gcc_assert (sym->backend_decl); |
bc21d315 | 3486 | gcc_assert (sym->ts.u.cl && sym->ts.u.cl->length); |
6de9cd9a | 3487 | |
323cea66 | 3488 | gfc_init_block (&init); |
6de9cd9a DN |
3489 | |
3490 | /* Evaluate the string length expression. */ | |
0019d498 | 3491 | gfc_conv_string_length (sym->ts.u.cl, NULL, &init); |
6de9cd9a | 3492 | |
0019d498 | 3493 | gfc_trans_vla_type_sizes (sym, &init); |
417ab240 | 3494 | |
6de9cd9a DN |
3495 | decl = sym->backend_decl; |
3496 | ||
1a186ec5 | 3497 | /* Emit a DECL_EXPR for this variable, which will cause the |
4ab2db93 | 3498 | gimplifier to allocate storage, and all that good stuff. */ |
bc98ed60 | 3499 | tmp = fold_build1_loc (input_location, DECL_EXPR, TREE_TYPE (decl), decl); |
0019d498 | 3500 | gfc_add_expr_to_block (&init, tmp); |
1a186ec5 | 3501 | |
0019d498 | 3502 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
6de9cd9a DN |
3503 | } |
3504 | ||
910450c1 FW |
3505 | /* Set the initial value of ASSIGN statement auxiliary variable explicitly. */ |
3506 | ||
0019d498 DK |
3507 | static void |
3508 | gfc_trans_assign_aux_var (gfc_symbol * sym, gfc_wrapped_block * block) | |
910450c1 | 3509 | { |
0019d498 | 3510 | stmtblock_t init; |
910450c1 FW |
3511 | |
3512 | gcc_assert (sym->backend_decl); | |
0019d498 | 3513 | gfc_start_block (&init); |
910450c1 FW |
3514 | |
3515 | /* Set the initial value to length. See the comments in | |
3516 | function gfc_add_assign_aux_vars in this file. */ | |
0019d498 | 3517 | gfc_add_modify (&init, GFC_DECL_STRING_LEN (sym->backend_decl), |
df09d1d5 | 3518 | build_int_cst (gfc_charlen_type_node, -2)); |
910450c1 | 3519 | |
0019d498 | 3520 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
910450c1 FW |
3521 | } |
3522 | ||
417ab240 JJ |
3523 | static void |
3524 | gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body) | |
3525 | { | |
3526 | tree t = *tp, var, val; | |
3527 | ||
3528 | if (t == NULL || t == error_mark_node) | |
3529 | return; | |
3530 | if (TREE_CONSTANT (t) || DECL_P (t)) | |
3531 | return; | |
3532 | ||
3533 | if (TREE_CODE (t) == SAVE_EXPR) | |
3534 | { | |
3535 | if (SAVE_EXPR_RESOLVED_P (t)) | |
3536 | { | |
3537 | *tp = TREE_OPERAND (t, 0); | |
3538 | return; | |
3539 | } | |
3540 | val = TREE_OPERAND (t, 0); | |
3541 | } | |
3542 | else | |
3543 | val = t; | |
3544 | ||
3545 | var = gfc_create_var_np (TREE_TYPE (t), NULL); | |
3546 | gfc_add_decl_to_function (var); | |
726a989a | 3547 | gfc_add_modify (body, var, val); |
417ab240 JJ |
3548 | if (TREE_CODE (t) == SAVE_EXPR) |
3549 | TREE_OPERAND (t, 0) = var; | |
3550 | *tp = var; | |
3551 | } | |
3552 | ||
3553 | static void | |
3554 | gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body) | |
3555 | { | |
3556 | tree t; | |
3557 | ||
3558 | if (type == NULL || type == error_mark_node) | |
3559 | return; | |
3560 | ||
3561 | type = TYPE_MAIN_VARIANT (type); | |
3562 | ||
3563 | if (TREE_CODE (type) == INTEGER_TYPE) | |
3564 | { | |
3565 | gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body); | |
3566 | gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body); | |
3567 | ||
3568 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3569 | { | |
3570 | TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type); | |
3571 | TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type); | |
3572 | } | |
3573 | } | |
3574 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
3575 | { | |
3576 | gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body); | |
3577 | gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body); | |
3578 | gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body); | |
3579 | gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body); | |
3580 | ||
3581 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3582 | { | |
3583 | TYPE_SIZE (t) = TYPE_SIZE (type); | |
3584 | TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type); | |
3585 | } | |
3586 | } | |
3587 | } | |
3588 | ||
3589 | /* Make sure all type sizes and array domains are either constant, | |
3590 | or variable or parameter decls. This is a simplified variant | |
3591 | of gimplify_type_sizes, but we can't use it here, as none of the | |
3592 | variables in the expressions have been gimplified yet. | |
3593 | As type sizes and domains for various variable length arrays | |
3594 | contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars | |
3595 | time, without this routine gimplify_type_sizes in the middle-end | |
3596 | could result in the type sizes being gimplified earlier than where | |
3597 | those variables are initialized. */ | |
3598 | ||
3599 | void | |
3600 | gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body) | |
3601 | { | |
3602 | tree type = TREE_TYPE (sym->backend_decl); | |
3603 | ||
3604 | if (TREE_CODE (type) == FUNCTION_TYPE | |
3605 | && (sym->attr.function || sym->attr.result || sym->attr.entry)) | |
3606 | { | |
3607 | if (! current_fake_result_decl) | |
3608 | return; | |
3609 | ||
3610 | type = TREE_TYPE (TREE_VALUE (current_fake_result_decl)); | |
3611 | } | |
3612 | ||
3613 | while (POINTER_TYPE_P (type)) | |
3614 | type = TREE_TYPE (type); | |
3615 | ||
3616 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
3617 | { | |
3618 | tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type); | |
3619 | ||
3620 | while (POINTER_TYPE_P (etype)) | |
3621 | etype = TREE_TYPE (etype); | |
3622 | ||
3623 | gfc_trans_vla_type_sizes_1 (etype, body); | |
3624 | } | |
3625 | ||
3626 | gfc_trans_vla_type_sizes_1 (type, body); | |
3627 | } | |
3628 | ||
6de9cd9a | 3629 | |
b7b184a8 | 3630 | /* Initialize a derived type by building an lvalue from the symbol |
2b56d6a4 TB |
3631 | and using trans_assignment to do the work. Set dealloc to false |
3632 | if no deallocation prior the assignment is needed. */ | |
0019d498 DK |
3633 | void |
3634 | gfc_init_default_dt (gfc_symbol * sym, stmtblock_t * block, bool dealloc) | |
d3837072 | 3635 | { |
b7b184a8 | 3636 | gfc_expr *e; |
d3837072 PT |
3637 | tree tmp; |
3638 | tree present; | |
3639 | ||
0019d498 DK |
3640 | gcc_assert (block); |
3641 | ||
b7b184a8 PT |
3642 | gcc_assert (!sym->attr.allocatable); |
3643 | gfc_set_sym_referenced (sym); | |
3644 | e = gfc_lval_expr_from_sym (sym); | |
2b56d6a4 | 3645 | tmp = gfc_trans_assignment (e, sym->value, false, dealloc); |
ba6f7079 TB |
3646 | if (sym->attr.dummy && (sym->attr.optional |
3647 | || sym->ns->proc_name->attr.entry_master)) | |
d3837072 | 3648 | { |
b7b184a8 | 3649 | present = gfc_conv_expr_present (sym); |
5d44e5c8 TB |
3650 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), present, |
3651 | tmp, build_empty_stmt (input_location)); | |
d3837072 | 3652 | } |
0019d498 | 3653 | gfc_add_expr_to_block (block, tmp); |
b7b184a8 | 3654 | gfc_free_expr (e); |
d3837072 PT |
3655 | } |
3656 | ||
3657 | ||
2c69d527 PT |
3658 | /* Initialize INTENT(OUT) derived type dummies. As well as giving |
3659 | them their default initializer, if they do not have allocatable | |
1cc0e193 | 3660 | components, they have their allocatable components deallocated. */ |
2c69d527 | 3661 | |
0019d498 DK |
3662 | static void |
3663 | init_intent_out_dt (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
b7b184a8 | 3664 | { |
0019d498 | 3665 | stmtblock_t init; |
b7b184a8 | 3666 | gfc_formal_arglist *f; |
2c69d527 | 3667 | tree tmp; |
8a272531 | 3668 | tree present; |
b7b184a8 | 3669 | |
0019d498 | 3670 | gfc_init_block (&init); |
4cbc9039 | 3671 | for (f = gfc_sym_get_dummy_args (proc_sym); f; f = f->next) |
b7b184a8 | 3672 | if (f->sym && f->sym->attr.intent == INTENT_OUT |
758e12af TB |
3673 | && !f->sym->attr.pointer |
3674 | && f->sym->ts.type == BT_DERIVED) | |
2c69d527 | 3675 | { |
ed3f1ef2 TB |
3676 | tmp = NULL_TREE; |
3677 | ||
3678 | /* Note: Allocatables are excluded as they are already handled | |
3679 | by the caller. */ | |
3680 | if (!f->sym->attr.allocatable | |
3681 | && gfc_is_finalizable (f->sym->ts.u.derived, NULL)) | |
2c69d527 | 3682 | { |
ed3f1ef2 TB |
3683 | stmtblock_t block; |
3684 | gfc_expr *e; | |
3685 | ||
3686 | gfc_init_block (&block); | |
3687 | f->sym->attr.referenced = 1; | |
3688 | e = gfc_lval_expr_from_sym (f->sym); | |
3689 | gfc_add_finalizer_call (&block, e); | |
3690 | gfc_free_expr (e); | |
3691 | tmp = gfc_finish_block (&block); | |
3692 | } | |
8a272531 | 3693 | |
ed3f1ef2 TB |
3694 | if (tmp == NULL_TREE && !f->sym->attr.allocatable |
3695 | && f->sym->ts.u.derived->attr.alloc_comp && !f->sym->value) | |
3696 | tmp = gfc_deallocate_alloc_comp (f->sym->ts.u.derived, | |
3697 | f->sym->backend_decl, | |
3698 | f->sym->as ? f->sym->as->rank : 0); | |
8a272531 | 3699 | |
ed3f1ef2 TB |
3700 | if (tmp != NULL_TREE && (f->sym->attr.optional |
3701 | || f->sym->ns->proc_name->attr.entry_master)) | |
3702 | { | |
3703 | present = gfc_conv_expr_present (f->sym); | |
3704 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), | |
3705 | present, tmp, build_empty_stmt (input_location)); | |
2c69d527 | 3706 | } |
ed3f1ef2 TB |
3707 | |
3708 | if (tmp != NULL_TREE) | |
3709 | gfc_add_expr_to_block (&init, tmp); | |
3710 | else if (f->sym->value && !f->sym->attr.allocatable) | |
0019d498 | 3711 | gfc_init_default_dt (f->sym, &init, true); |
2c69d527 | 3712 | } |
c7f17815 JW |
3713 | else if (f->sym && f->sym->attr.intent == INTENT_OUT |
3714 | && f->sym->ts.type == BT_CLASS | |
3715 | && !CLASS_DATA (f->sym)->attr.class_pointer | |
ed3f1ef2 | 3716 | && !CLASS_DATA (f->sym)->attr.allocatable) |
c7f17815 | 3717 | { |
ed3f1ef2 TB |
3718 | stmtblock_t block; |
3719 | gfc_expr *e; | |
3720 | ||
3721 | gfc_init_block (&block); | |
3722 | f->sym->attr.referenced = 1; | |
3723 | e = gfc_lval_expr_from_sym (f->sym); | |
3724 | gfc_add_finalizer_call (&block, e); | |
3725 | gfc_free_expr (e); | |
3726 | tmp = gfc_finish_block (&block); | |
c7f17815 JW |
3727 | |
3728 | if (f->sym->attr.optional || f->sym->ns->proc_name->attr.entry_master) | |
3729 | { | |
3730 | present = gfc_conv_expr_present (f->sym); | |
3731 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), | |
3732 | present, tmp, | |
3733 | build_empty_stmt (input_location)); | |
3734 | } | |
3735 | ||
3736 | gfc_add_expr_to_block (&init, tmp); | |
3737 | } | |
b7b184a8 | 3738 | |
0019d498 | 3739 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
b7b184a8 PT |
3740 | } |
3741 | ||
d3837072 | 3742 | |
6de9cd9a DN |
3743 | /* Generate function entry and exit code, and add it to the function body. |
3744 | This includes: | |
f8d0aee5 | 3745 | Allocation and initialization of array variables. |
6de9cd9a | 3746 | Allocation of character string variables. |
910450c1 | 3747 | Initialization and possibly repacking of dummy arrays. |
1517fd57 | 3748 | Initialization of ASSIGN statement auxiliary variable. |
571d54de | 3749 | Initialization of ASSOCIATE names. |
1517fd57 | 3750 | Automatic deallocation. */ |
6de9cd9a | 3751 | |
d74d8807 DK |
3752 | void |
3753 | gfc_trans_deferred_vars (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
6de9cd9a DN |
3754 | { |
3755 | locus loc; | |
3756 | gfc_symbol *sym; | |
417ab240 | 3757 | gfc_formal_arglist *f; |
0019d498 | 3758 | stmtblock_t tmpblock; |
7114edca | 3759 | bool seen_trans_deferred_array = false; |
8d51f26f PT |
3760 | tree tmp = NULL; |
3761 | gfc_expr *e; | |
3762 | gfc_se se; | |
3763 | stmtblock_t init; | |
6de9cd9a DN |
3764 | |
3765 | /* Deal with implicit return variables. Explicit return variables will | |
3766 | already have been added. */ | |
3767 | if (gfc_return_by_reference (proc_sym) && proc_sym->result == proc_sym) | |
3768 | { | |
3769 | if (!current_fake_result_decl) | |
3770 | { | |
d198b59a JJ |
3771 | gfc_entry_list *el = NULL; |
3772 | if (proc_sym->attr.entry_master) | |
3773 | { | |
3774 | for (el = proc_sym->ns->entries; el; el = el->next) | |
3775 | if (el->sym != el->sym->result) | |
3776 | break; | |
3777 | } | |
766d0c8c DF |
3778 | /* TODO: move to the appropriate place in resolve.c. */ |
3779 | if (warn_return_type && el == NULL) | |
3780 | gfc_warning ("Return value of function '%s' at %L not set", | |
3781 | proc_sym->name, &proc_sym->declared_at); | |
6de9cd9a | 3782 | } |
d198b59a | 3783 | else if (proc_sym->as) |
6de9cd9a | 3784 | { |
417ab240 | 3785 | tree result = TREE_VALUE (current_fake_result_decl); |
d74d8807 | 3786 | gfc_trans_dummy_array_bias (proc_sym, result, block); |
f5f701ad PT |
3787 | |
3788 | /* An automatic character length, pointer array result. */ | |
3789 | if (proc_sym->ts.type == BT_CHARACTER | |
bc21d315 | 3790 | && TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) |
d74d8807 | 3791 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
6de9cd9a DN |
3792 | } |
3793 | else if (proc_sym->ts.type == BT_CHARACTER) | |
3794 | { | |
8d51f26f PT |
3795 | if (proc_sym->ts.deferred) |
3796 | { | |
3797 | tmp = NULL; | |
ceccaacf TB |
3798 | gfc_save_backend_locus (&loc); |
3799 | gfc_set_backend_locus (&proc_sym->declared_at); | |
8d51f26f PT |
3800 | gfc_start_block (&init); |
3801 | /* Zero the string length on entry. */ | |
3802 | gfc_add_modify (&init, proc_sym->ts.u.cl->backend_decl, | |
3803 | build_int_cst (gfc_charlen_type_node, 0)); | |
3804 | /* Null the pointer. */ | |
3805 | e = gfc_lval_expr_from_sym (proc_sym); | |
3806 | gfc_init_se (&se, NULL); | |
3807 | se.want_pointer = 1; | |
3808 | gfc_conv_expr (&se, e); | |
3809 | gfc_free_expr (e); | |
3810 | tmp = se.expr; | |
3811 | gfc_add_modify (&init, tmp, | |
3812 | fold_convert (TREE_TYPE (se.expr), | |
3813 | null_pointer_node)); | |
ceccaacf | 3814 | gfc_restore_backend_locus (&loc); |
8d51f26f PT |
3815 | |
3816 | /* Pass back the string length on exit. */ | |
3817 | tmp = proc_sym->ts.u.cl->passed_length; | |
3818 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
3819 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
3820 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
3821 | gfc_charlen_type_node, tmp, | |
3822 | proc_sym->ts.u.cl->backend_decl); | |
3823 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
3824 | } | |
3825 | else if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) | |
d74d8807 | 3826 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
6de9cd9a DN |
3827 | } |
3828 | else | |
973ff4c0 TS |
3829 | gcc_assert (gfc_option.flag_f2c |
3830 | && proc_sym->ts.type == BT_COMPLEX); | |
6de9cd9a DN |
3831 | } |
3832 | ||
d3837072 PT |
3833 | /* Initialize the INTENT(OUT) derived type dummy arguments. This |
3834 | should be done here so that the offsets and lbounds of arrays | |
3835 | are available. */ | |
ceccaacf TB |
3836 | gfc_save_backend_locus (&loc); |
3837 | gfc_set_backend_locus (&proc_sym->declared_at); | |
d74d8807 | 3838 | init_intent_out_dt (proc_sym, block); |
ceccaacf | 3839 | gfc_restore_backend_locus (&loc); |
d3837072 | 3840 | |
6de9cd9a DN |
3841 | for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink) |
3842 | { | |
ea8b72e6 TB |
3843 | bool alloc_comp_or_fini = (sym->ts.type == BT_DERIVED) |
3844 | && (sym->ts.u.derived->attr.alloc_comp | |
3845 | || gfc_is_finalizable (sym->ts.u.derived, | |
3846 | NULL)); | |
571d54de | 3847 | if (sym->assoc) |
6312ef45 JW |
3848 | continue; |
3849 | ||
0c1e1df8 JJ |
3850 | if (sym->attr.subref_array_pointer |
3851 | && GFC_DECL_SPAN (sym->backend_decl) | |
3852 | && !TREE_STATIC (GFC_DECL_SPAN (sym->backend_decl))) | |
3853 | { | |
3854 | gfc_init_block (&tmpblock); | |
3855 | gfc_add_modify (&tmpblock, GFC_DECL_SPAN (sym->backend_decl), | |
3856 | build_int_cst (gfc_array_index_type, 0)); | |
3857 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
3858 | NULL_TREE); | |
3859 | } | |
3860 | ||
e1e3b9d3 TB |
3861 | if (sym->ts.type == BT_CLASS |
3862 | && (sym->attr.save || gfc_option.flag_max_stack_var_size == 0) | |
f118468a TB |
3863 | && CLASS_DATA (sym)->attr.allocatable) |
3864 | { | |
3865 | tree vptr; | |
3866 | ||
3867 | if (UNLIMITED_POLY (sym)) | |
3868 | vptr = null_pointer_node; | |
3869 | else | |
3870 | { | |
3871 | gfc_symbol *vsym; | |
3872 | vsym = gfc_find_derived_vtab (sym->ts.u.derived); | |
3873 | vptr = gfc_get_symbol_decl (vsym); | |
3874 | vptr = gfc_build_addr_expr (NULL, vptr); | |
3875 | } | |
3876 | ||
3877 | if (CLASS_DATA (sym)->attr.dimension | |
3878 | || (CLASS_DATA (sym)->attr.codimension | |
3879 | && gfc_option.coarray != GFC_FCOARRAY_LIB)) | |
3880 | { | |
3881 | tmp = gfc_class_data_get (sym->backend_decl); | |
3882 | tmp = gfc_build_null_descriptor (TREE_TYPE (tmp)); | |
3883 | } | |
3884 | else | |
3885 | tmp = null_pointer_node; | |
3886 | ||
3887 | DECL_INITIAL (sym->backend_decl) | |
3888 | = gfc_class_set_static_fields (sym->backend_decl, vptr, tmp); | |
3889 | TREE_CONSTANT (DECL_INITIAL (sym->backend_decl)) = 1; | |
3890 | } | |
3891 | else if (sym->attr.dimension || sym->attr.codimension) | |
6de9cd9a | 3892 | { |
cde3a7a9 AL |
3893 | /* Assumed-size Cray pointees need to be treated as AS_EXPLICIT. */ |
3894 | array_type tmp = sym->as->type; | |
3895 | if (tmp == AS_ASSUMED_SIZE && sym->as->cp_was_assumed) | |
3896 | tmp = AS_EXPLICIT; | |
3897 | switch (tmp) | |
6de9cd9a DN |
3898 | { |
3899 | case AS_EXPLICIT: | |
3900 | if (sym->attr.dummy || sym->attr.result) | |
d74d8807 | 3901 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
6de9cd9a DN |
3902 | else if (sym->attr.pointer || sym->attr.allocatable) |
3903 | { | |
3904 | if (TREE_STATIC (sym->backend_decl)) | |
ceccaacf TB |
3905 | { |
3906 | gfc_save_backend_locus (&loc); | |
3907 | gfc_set_backend_locus (&sym->declared_at); | |
3908 | gfc_trans_static_array_pointer (sym); | |
3909 | gfc_restore_backend_locus (&loc); | |
3910 | } | |
6de9cd9a | 3911 | else |
7114edca PT |
3912 | { |
3913 | seen_trans_deferred_array = true; | |
d74d8807 | 3914 | gfc_trans_deferred_array (sym, block); |
7114edca | 3915 | } |
6de9cd9a | 3916 | } |
9f3761c5 TB |
3917 | else if (sym->attr.codimension && TREE_STATIC (sym->backend_decl)) |
3918 | { | |
3919 | gfc_init_block (&tmpblock); | |
3920 | gfc_trans_array_cobounds (TREE_TYPE (sym->backend_decl), | |
3921 | &tmpblock, sym); | |
3922 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
3923 | NULL_TREE); | |
3924 | continue; | |
3925 | } | |
b0936265 | 3926 | else |
6de9cd9a | 3927 | { |
ceccaacf TB |
3928 | gfc_save_backend_locus (&loc); |
3929 | gfc_set_backend_locus (&sym->declared_at); | |
3930 | ||
ea8b72e6 | 3931 | if (alloc_comp_or_fini) |
7114edca PT |
3932 | { |
3933 | seen_trans_deferred_array = true; | |
d74d8807 | 3934 | gfc_trans_deferred_array (sym, block); |
7114edca | 3935 | } |
b7b184a8 PT |
3936 | else if (sym->ts.type == BT_DERIVED |
3937 | && sym->value | |
3938 | && !sym->attr.data | |
3939 | && sym->attr.save == SAVE_NONE) | |
0019d498 DK |
3940 | { |
3941 | gfc_start_block (&tmpblock); | |
3942 | gfc_init_default_dt (sym, &tmpblock, false); | |
d74d8807 | 3943 | gfc_add_init_cleanup (block, |
0019d498 DK |
3944 | gfc_finish_block (&tmpblock), |
3945 | NULL_TREE); | |
3946 | } | |
7114edca | 3947 | |
0019d498 | 3948 | gfc_trans_auto_array_allocation (sym->backend_decl, |
d74d8807 | 3949 | sym, block); |
363aab21 | 3950 | gfc_restore_backend_locus (&loc); |
6de9cd9a DN |
3951 | } |
3952 | break; | |
3953 | ||
3954 | case AS_ASSUMED_SIZE: | |
3955 | /* Must be a dummy parameter. */ | |
b3aefde2 | 3956 | gcc_assert (sym->attr.dummy || sym->as->cp_was_assumed); |
6de9cd9a DN |
3957 | |
3958 | /* We should always pass assumed size arrays the g77 way. */ | |
b3aefde2 | 3959 | if (sym->attr.dummy) |
d74d8807 | 3960 | gfc_trans_g77_array (sym, block); |
0019d498 | 3961 | break; |
6de9cd9a DN |
3962 | |
3963 | case AS_ASSUMED_SHAPE: | |
3964 | /* Must be a dummy parameter. */ | |
6e45f57b | 3965 | gcc_assert (sym->attr.dummy); |
6de9cd9a | 3966 | |
d74d8807 | 3967 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
6de9cd9a DN |
3968 | break; |
3969 | ||
c62c6622 | 3970 | case AS_ASSUMED_RANK: |
6de9cd9a | 3971 | case AS_DEFERRED: |
7114edca | 3972 | seen_trans_deferred_array = true; |
d74d8807 | 3973 | gfc_trans_deferred_array (sym, block); |
6de9cd9a DN |
3974 | break; |
3975 | ||
3976 | default: | |
6e45f57b | 3977 | gcc_unreachable (); |
6de9cd9a | 3978 | } |
ea8b72e6 | 3979 | if (alloc_comp_or_fini && !seen_trans_deferred_array) |
d74d8807 | 3980 | gfc_trans_deferred_array (sym, block); |
6de9cd9a | 3981 | } |
c49ea23d PT |
3982 | else if ((!sym->attr.dummy || sym->ts.deferred) |
3983 | && (sym->ts.type == BT_CLASS | |
102344e2 | 3984 | && CLASS_DATA (sym)->attr.class_pointer)) |
1b26c26b | 3985 | continue; |
8d51f26f | 3986 | else if ((!sym->attr.dummy || sym->ts.deferred) |
25cbe58f TB |
3987 | && (sym->attr.allocatable |
3988 | || (sym->ts.type == BT_CLASS | |
3989 | && CLASS_DATA (sym)->attr.allocatable))) | |
1517fd57 | 3990 | { |
36085529 | 3991 | if (!sym->attr.save && gfc_option.flag_max_stack_var_size != 0) |
64b33a7e | 3992 | { |
5d81ddd0 TB |
3993 | tree descriptor = NULL_TREE; |
3994 | ||
64b33a7e TB |
3995 | /* Nullify and automatic deallocation of allocatable |
3996 | scalars. */ | |
64b33a7e TB |
3997 | e = gfc_lval_expr_from_sym (sym); |
3998 | if (sym->ts.type == BT_CLASS) | |
b04533af | 3999 | gfc_add_data_component (e); |
64b33a7e TB |
4000 | |
4001 | gfc_init_se (&se, NULL); | |
c49ea23d PT |
4002 | if (sym->ts.type != BT_CLASS |
4003 | || sym->ts.u.derived->attr.dimension | |
4004 | || sym->ts.u.derived->attr.codimension) | |
4005 | { | |
4006 | se.want_pointer = 1; | |
4007 | gfc_conv_expr (&se, e); | |
4008 | } | |
4009 | else if (sym->ts.type == BT_CLASS | |
4010 | && !CLASS_DATA (sym)->attr.dimension | |
4011 | && !CLASS_DATA (sym)->attr.codimension) | |
4012 | { | |
4013 | se.want_pointer = 1; | |
4014 | gfc_conv_expr (&se, e); | |
4015 | } | |
4016 | else | |
4017 | { | |
4018 | gfc_conv_expr (&se, e); | |
5d81ddd0 | 4019 | descriptor = se.expr; |
c49ea23d PT |
4020 | se.expr = gfc_conv_descriptor_data_addr (se.expr); |
4021 | se.expr = build_fold_indirect_ref_loc (input_location, se.expr); | |
4022 | } | |
64b33a7e TB |
4023 | gfc_free_expr (e); |
4024 | ||
ceccaacf TB |
4025 | gfc_save_backend_locus (&loc); |
4026 | gfc_set_backend_locus (&sym->declared_at); | |
0019d498 | 4027 | gfc_start_block (&init); |
8d51f26f PT |
4028 | |
4029 | if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
4030 | { | |
4031 | /* Nullify when entering the scope. */ | |
48f316ea TB |
4032 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
4033 | TREE_TYPE (se.expr), se.expr, | |
4034 | fold_convert (TREE_TYPE (se.expr), | |
4035 | null_pointer_node)); | |
4036 | if (sym->attr.optional) | |
4037 | { | |
4038 | tree present = gfc_conv_expr_present (sym); | |
4039 | tmp = build3_loc (input_location, COND_EXPR, | |
4040 | void_type_node, present, tmp, | |
4041 | build_empty_stmt (input_location)); | |
4042 | } | |
4043 | gfc_add_expr_to_block (&init, tmp); | |
8d51f26f PT |
4044 | } |
4045 | ||
48f316ea | 4046 | if ((sym->attr.dummy || sym->attr.result) |
8d51f26f PT |
4047 | && sym->ts.type == BT_CHARACTER |
4048 | && sym->ts.deferred) | |
4049 | { | |
4050 | /* Character length passed by reference. */ | |
4051 | tmp = sym->ts.u.cl->passed_length; | |
4052 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
4053 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
4054 | ||
4055 | if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
4056 | /* Zero the string length when entering the scope. */ | |
4057 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, | |
4058 | build_int_cst (gfc_charlen_type_node, 0)); | |
4059 | else | |
48f316ea TB |
4060 | { |
4061 | tree tmp2; | |
4062 | ||
4063 | tmp2 = fold_build2_loc (input_location, MODIFY_EXPR, | |
4064 | gfc_charlen_type_node, | |
4065 | sym->ts.u.cl->backend_decl, tmp); | |
4066 | if (sym->attr.optional) | |
4067 | { | |
4068 | tree present = gfc_conv_expr_present (sym); | |
4069 | tmp2 = build3_loc (input_location, COND_EXPR, | |
4070 | void_type_node, present, tmp2, | |
4071 | build_empty_stmt (input_location)); | |
4072 | } | |
4073 | gfc_add_expr_to_block (&init, tmp2); | |
4074 | } | |
8d51f26f | 4075 | |
ceccaacf TB |
4076 | gfc_restore_backend_locus (&loc); |
4077 | ||
8d51f26f PT |
4078 | /* Pass the final character length back. */ |
4079 | if (sym->attr.intent != INTENT_IN) | |
48f316ea TB |
4080 | { |
4081 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
4082 | gfc_charlen_type_node, tmp, | |
4083 | sym->ts.u.cl->backend_decl); | |
4084 | if (sym->attr.optional) | |
4085 | { | |
4086 | tree present = gfc_conv_expr_present (sym); | |
4087 | tmp = build3_loc (input_location, COND_EXPR, | |
4088 | void_type_node, present, tmp, | |
4089 | build_empty_stmt (input_location)); | |
4090 | } | |
4091 | } | |
8d51f26f PT |
4092 | else |
4093 | tmp = NULL_TREE; | |
4094 | } | |
ceccaacf TB |
4095 | else |
4096 | gfc_restore_backend_locus (&loc); | |
64b33a7e TB |
4097 | |
4098 | /* Deallocate when leaving the scope. Nullifying is not | |
4099 | needed. */ | |
ef292537 TB |
4100 | if (!sym->attr.result && !sym->attr.dummy |
4101 | && !sym->ns->proc_name->attr.is_main_program) | |
5d81ddd0 TB |
4102 | { |
4103 | if (sym->ts.type == BT_CLASS | |
4104 | && CLASS_DATA (sym)->attr.codimension) | |
4105 | tmp = gfc_deallocate_with_status (descriptor, NULL_TREE, | |
4106 | NULL_TREE, NULL_TREE, | |
4107 | NULL_TREE, true, NULL, | |
4108 | true); | |
4109 | else | |
76c1a7ec TB |
4110 | { |
4111 | gfc_expr *expr = gfc_lval_expr_from_sym (sym); | |
4112 | tmp = gfc_deallocate_scalar_with_status (se.expr, NULL_TREE, | |
4113 | true, expr, sym->ts); | |
4114 | gfc_free_expr (expr); | |
4115 | } | |
5d81ddd0 | 4116 | } |
8c077737 JW |
4117 | if (sym->ts.type == BT_CLASS) |
4118 | { | |
4119 | /* Initialize _vptr to declared type. */ | |
8b704316 | 4120 | gfc_symbol *vtab; |
8c077737 | 4121 | tree rhs; |
ceccaacf TB |
4122 | |
4123 | gfc_save_backend_locus (&loc); | |
4124 | gfc_set_backend_locus (&sym->declared_at); | |
8c077737 JW |
4125 | e = gfc_lval_expr_from_sym (sym); |
4126 | gfc_add_vptr_component (e); | |
4127 | gfc_init_se (&se, NULL); | |
4128 | se.want_pointer = 1; | |
4129 | gfc_conv_expr (&se, e); | |
4130 | gfc_free_expr (e); | |
8b704316 PT |
4131 | if (UNLIMITED_POLY (sym)) |
4132 | rhs = build_int_cst (TREE_TYPE (se.expr), 0); | |
4133 | else | |
4134 | { | |
4135 | vtab = gfc_find_derived_vtab (sym->ts.u.derived); | |
4136 | rhs = gfc_build_addr_expr (TREE_TYPE (se.expr), | |
4137 | gfc_get_symbol_decl (vtab)); | |
4138 | } | |
8c077737 | 4139 | gfc_add_modify (&init, se.expr, rhs); |
ceccaacf | 4140 | gfc_restore_backend_locus (&loc); |
8c077737 JW |
4141 | } |
4142 | ||
d74d8807 | 4143 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); |
64b33a7e | 4144 | } |
1517fd57 | 4145 | } |
8d51f26f PT |
4146 | else if (sym->ts.type == BT_CHARACTER && sym->ts.deferred) |
4147 | { | |
4148 | tree tmp = NULL; | |
4149 | stmtblock_t init; | |
4150 | ||
4151 | /* If we get to here, all that should be left are pointers. */ | |
4152 | gcc_assert (sym->attr.pointer); | |
4153 | ||
4154 | if (sym->attr.dummy) | |
4155 | { | |
4156 | gfc_start_block (&init); | |
4157 | ||
4158 | /* Character length passed by reference. */ | |
4159 | tmp = sym->ts.u.cl->passed_length; | |
4160 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
4161 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
4162 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, tmp); | |
4163 | /* Pass the final character length back. */ | |
4164 | if (sym->attr.intent != INTENT_IN) | |
4165 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
4166 | gfc_charlen_type_node, tmp, | |
4167 | sym->ts.u.cl->backend_decl); | |
4168 | else | |
4169 | tmp = NULL_TREE; | |
4170 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
4171 | } | |
4172 | } | |
e69afb29 SK |
4173 | else if (sym->ts.deferred) |
4174 | gfc_fatal_error ("Deferred type parameter not yet supported"); | |
ea8b72e6 | 4175 | else if (alloc_comp_or_fini) |
d74d8807 | 4176 | gfc_trans_deferred_array (sym, block); |
6de9cd9a DN |
4177 | else if (sym->ts.type == BT_CHARACTER) |
4178 | { | |
363aab21 | 4179 | gfc_save_backend_locus (&loc); |
6de9cd9a DN |
4180 | gfc_set_backend_locus (&sym->declared_at); |
4181 | if (sym->attr.dummy || sym->attr.result) | |
d74d8807 | 4182 | gfc_trans_dummy_character (sym, sym->ts.u.cl, block); |
6de9cd9a | 4183 | else |
d74d8807 | 4184 | gfc_trans_auto_character_variable (sym, block); |
363aab21 | 4185 | gfc_restore_backend_locus (&loc); |
6de9cd9a | 4186 | } |
910450c1 FW |
4187 | else if (sym->attr.assign) |
4188 | { | |
363aab21 | 4189 | gfc_save_backend_locus (&loc); |
910450c1 | 4190 | gfc_set_backend_locus (&sym->declared_at); |
d74d8807 | 4191 | gfc_trans_assign_aux_var (sym, block); |
363aab21 | 4192 | gfc_restore_backend_locus (&loc); |
910450c1 | 4193 | } |
b7b184a8 PT |
4194 | else if (sym->ts.type == BT_DERIVED |
4195 | && sym->value | |
4196 | && !sym->attr.data | |
4197 | && sym->attr.save == SAVE_NONE) | |
0019d498 DK |
4198 | { |
4199 | gfc_start_block (&tmpblock); | |
4200 | gfc_init_default_dt (sym, &tmpblock, false); | |
d74d8807 | 4201 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), |
0019d498 DK |
4202 | NULL_TREE); |
4203 | } | |
8b704316 | 4204 | else if (!(UNLIMITED_POLY(sym))) |
6e45f57b | 4205 | gcc_unreachable (); |
6de9cd9a DN |
4206 | } |
4207 | ||
0019d498 | 4208 | gfc_init_block (&tmpblock); |
417ab240 | 4209 | |
4cbc9039 | 4210 | for (f = gfc_sym_get_dummy_args (proc_sym); f; f = f->next) |
08113c73 PT |
4211 | { |
4212 | if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER) | |
4213 | { | |
bc21d315 JW |
4214 | gcc_assert (f->sym->ts.u.cl->backend_decl != NULL); |
4215 | if (TREE_CODE (f->sym->ts.u.cl->backend_decl) == PARM_DECL) | |
0019d498 | 4216 | gfc_trans_vla_type_sizes (f->sym, &tmpblock); |
08113c73 | 4217 | } |
08113c73 | 4218 | } |
417ab240 JJ |
4219 | |
4220 | if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER | |
4221 | && current_fake_result_decl != NULL) | |
4222 | { | |
bc21d315 JW |
4223 | gcc_assert (proc_sym->ts.u.cl->backend_decl != NULL); |
4224 | if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == PARM_DECL) | |
0019d498 | 4225 | gfc_trans_vla_type_sizes (proc_sym, &tmpblock); |
417ab240 JJ |
4226 | } |
4227 | ||
d74d8807 | 4228 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), NULL_TREE); |
6de9cd9a DN |
4229 | } |
4230 | ||
a64f5186 JJ |
4231 | static GTY ((param_is (struct module_htab_entry))) htab_t module_htab; |
4232 | ||
4233 | /* Hash and equality functions for module_htab. */ | |
4234 | ||
4235 | static hashval_t | |
4236 | module_htab_do_hash (const void *x) | |
4237 | { | |
4238 | return htab_hash_string (((const struct module_htab_entry *)x)->name); | |
4239 | } | |
4240 | ||
4241 | static int | |
4242 | module_htab_eq (const void *x1, const void *x2) | |
4243 | { | |
4244 | return strcmp ((((const struct module_htab_entry *)x1)->name), | |
4245 | (const char *)x2) == 0; | |
4246 | } | |
4247 | ||
4248 | /* Hash and equality functions for module_htab's decls. */ | |
4249 | ||
4250 | static hashval_t | |
4251 | module_htab_decls_hash (const void *x) | |
4252 | { | |
4253 | const_tree t = (const_tree) x; | |
4254 | const_tree n = DECL_NAME (t); | |
4255 | if (n == NULL_TREE) | |
4256 | n = TYPE_NAME (TREE_TYPE (t)); | |
afdda4b4 | 4257 | return htab_hash_string (IDENTIFIER_POINTER (n)); |
a64f5186 JJ |
4258 | } |
4259 | ||
4260 | static int | |
4261 | module_htab_decls_eq (const void *x1, const void *x2) | |
4262 | { | |
4263 | const_tree t1 = (const_tree) x1; | |
4264 | const_tree n1 = DECL_NAME (t1); | |
4265 | if (n1 == NULL_TREE) | |
4266 | n1 = TYPE_NAME (TREE_TYPE (t1)); | |
4267 | return strcmp (IDENTIFIER_POINTER (n1), (const char *) x2) == 0; | |
4268 | } | |
4269 | ||
4270 | struct module_htab_entry * | |
4271 | gfc_find_module (const char *name) | |
4272 | { | |
4273 | void **slot; | |
4274 | ||
4275 | if (! module_htab) | |
4276 | module_htab = htab_create_ggc (10, module_htab_do_hash, | |
4277 | module_htab_eq, NULL); | |
4278 | ||
4279 | slot = htab_find_slot_with_hash (module_htab, name, | |
4280 | htab_hash_string (name), INSERT); | |
4281 | if (*slot == NULL) | |
4282 | { | |
766090c2 | 4283 | module_htab_entry *entry = ggc_cleared_alloc<module_htab_entry> (); |
a64f5186 JJ |
4284 | |
4285 | entry->name = gfc_get_string (name); | |
4286 | entry->decls = htab_create_ggc (10, module_htab_decls_hash, | |
4287 | module_htab_decls_eq, NULL); | |
4288 | *slot = (void *) entry; | |
4289 | } | |
4290 | return (struct module_htab_entry *) *slot; | |
4291 | } | |
4292 | ||
4293 | void | |
4294 | gfc_module_add_decl (struct module_htab_entry *entry, tree decl) | |
4295 | { | |
4296 | void **slot; | |
4297 | const char *name; | |
4298 | ||
4299 | if (DECL_NAME (decl)) | |
4300 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
4301 | else | |
4302 | { | |
4303 | gcc_assert (TREE_CODE (decl) == TYPE_DECL); | |
4304 | name = IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))); | |
4305 | } | |
4306 | slot = htab_find_slot_with_hash (entry->decls, name, | |
4307 | htab_hash_string (name), INSERT); | |
4308 | if (*slot == NULL) | |
4309 | *slot = (void *) decl; | |
4310 | } | |
4311 | ||
4312 | static struct module_htab_entry *cur_module; | |
6de9cd9a | 4313 | |
5f673c6a TB |
4314 | |
4315 | /* Generate debugging symbols for namelists. This function must come after | |
4316 | generate_local_decl to ensure that the variables in the namelist are | |
4317 | already declared. */ | |
4318 | ||
4319 | static tree | |
4320 | generate_namelist_decl (gfc_symbol * sym) | |
4321 | { | |
4322 | gfc_namelist *nml; | |
4323 | tree decl; | |
4324 | vec<constructor_elt, va_gc> *nml_decls = NULL; | |
4325 | ||
4326 | gcc_assert (sym->attr.flavor == FL_NAMELIST); | |
4327 | for (nml = sym->namelist; nml; nml = nml->next) | |
4328 | { | |
4329 | if (nml->sym->backend_decl == NULL_TREE) | |
4330 | { | |
4331 | nml->sym->attr.referenced = 1; | |
4332 | nml->sym->backend_decl = gfc_get_symbol_decl (nml->sym); | |
4333 | } | |
96d91784 | 4334 | DECL_IGNORED_P (nml->sym->backend_decl) = 0; |
5f673c6a TB |
4335 | CONSTRUCTOR_APPEND_ELT (nml_decls, NULL_TREE, nml->sym->backend_decl); |
4336 | } | |
4337 | ||
4338 | decl = make_node (NAMELIST_DECL); | |
4339 | TREE_TYPE (decl) = void_type_node; | |
4340 | NAMELIST_DECL_ASSOCIATED_DECL (decl) = build_constructor (NULL_TREE, nml_decls); | |
4341 | DECL_NAME (decl) = get_identifier (sym->name); | |
4342 | return decl; | |
4343 | } | |
4344 | ||
4345 | ||
6de9cd9a DN |
4346 | /* Output an initialized decl for a module variable. */ |
4347 | ||
4348 | static void | |
4349 | gfc_create_module_variable (gfc_symbol * sym) | |
4350 | { | |
4351 | tree decl; | |
6de9cd9a | 4352 | |
1a492601 PT |
4353 | /* Module functions with alternate entries are dealt with later and |
4354 | would get caught by the next condition. */ | |
4355 | if (sym->attr.entry) | |
4356 | return; | |
4357 | ||
a8b3b0b6 CR |
4358 | /* Make sure we convert the types of the derived types from iso_c_binding |
4359 | into (void *). */ | |
4360 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
4361 | && sym->ts.type == BT_DERIVED) | |
4362 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
4363 | ||
a64f5186 JJ |
4364 | if (sym->attr.flavor == FL_DERIVED |
4365 | && sym->backend_decl | |
4366 | && TREE_CODE (sym->backend_decl) == RECORD_TYPE) | |
4367 | { | |
4368 | decl = sym->backend_decl; | |
4369 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
b8849663 | 4370 | |
9fa52231 | 4371 | if (!sym->attr.use_assoc) |
b8849663 PT |
4372 | { |
4373 | gcc_assert (TYPE_CONTEXT (decl) == NULL_TREE | |
4374 | || TYPE_CONTEXT (decl) == sym->ns->proc_name->backend_decl); | |
4375 | gcc_assert (DECL_CONTEXT (TYPE_STUB_DECL (decl)) == NULL_TREE | |
4376 | || DECL_CONTEXT (TYPE_STUB_DECL (decl)) | |
4377 | == sym->ns->proc_name->backend_decl); | |
4378 | } | |
a64f5186 JJ |
4379 | TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl; |
4380 | DECL_CONTEXT (TYPE_STUB_DECL (decl)) = sym->ns->proc_name->backend_decl; | |
4381 | gfc_module_add_decl (cur_module, TYPE_STUB_DECL (decl)); | |
4382 | } | |
4383 | ||
6e0d2de7 JW |
4384 | /* Only output variables, procedure pointers and array valued, |
4385 | or derived type, parameters. */ | |
6de9cd9a | 4386 | if (sym->attr.flavor != FL_VARIABLE |
fdc55763 | 4387 | && !(sym->attr.flavor == FL_PARAMETER |
6e0d2de7 JW |
4388 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) |
4389 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.proc_pointer)) | |
6de9cd9a DN |
4390 | return; |
4391 | ||
a64f5186 JJ |
4392 | if ((sym->attr.in_common || sym->attr.in_equivalence) && sym->backend_decl) |
4393 | { | |
4394 | decl = sym->backend_decl; | |
e5b16755 | 4395 | gcc_assert (DECL_FILE_SCOPE_P (decl)); |
a64f5186 JJ |
4396 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); |
4397 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4398 | gfc_module_add_decl (cur_module, decl); | |
4399 | } | |
4400 | ||
9cbf8b41 | 4401 | /* Don't generate variables from other modules. Variables from |
f84c6bd9 FXC |
4402 | COMMONs and Cray pointees will already have been generated. */ |
4403 | if (sym->attr.use_assoc || sym->attr.in_common || sym->attr.cray_pointee) | |
6de9cd9a DN |
4404 | return; |
4405 | ||
30aabb86 | 4406 | /* Equivalenced variables arrive here after creation. */ |
b95605fb | 4407 | if (sym->backend_decl |
a64f5186 JJ |
4408 | && (sym->equiv_built || sym->attr.in_equivalence)) |
4409 | return; | |
30aabb86 | 4410 | |
80f95228 | 4411 | if (sym->backend_decl && !sym->attr.vtab && !sym->attr.target) |
6de9cd9a DN |
4412 | internal_error ("backend decl for module variable %s already exists", |
4413 | sym->name); | |
4414 | ||
38945cfe TK |
4415 | if (sym->module && !sym->attr.result && !sym->attr.dummy |
4416 | && (sym->attr.access == ACCESS_UNKNOWN | |
4417 | && (sym->ns->default_access == ACCESS_PRIVATE | |
4418 | || (sym->ns->default_access == ACCESS_UNKNOWN | |
4419 | && gfc_option.flag_module_private)))) | |
4420 | sym->attr.access = ACCESS_PRIVATE; | |
4421 | ||
4422 | if (warn_unused_variable && !sym->attr.referenced | |
4423 | && sym->attr.access == ACCESS_PRIVATE) | |
4424 | gfc_warning ("Unused PRIVATE module variable '%s' declared at %L", | |
4425 | sym->name, &sym->declared_at); | |
4426 | ||
6de9cd9a DN |
4427 | /* We always want module variables to be created. */ |
4428 | sym->attr.referenced = 1; | |
4429 | /* Create the decl. */ | |
4430 | decl = gfc_get_symbol_decl (sym); | |
4431 | ||
6de9cd9a DN |
4432 | /* Create the variable. */ |
4433 | pushdecl (decl); | |
a64f5186 JJ |
4434 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); |
4435 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
0e6df31e | 4436 | rest_of_decl_compilation (decl, 1, 0); |
a64f5186 | 4437 | gfc_module_add_decl (cur_module, decl); |
6de9cd9a DN |
4438 | |
4439 | /* Also add length of strings. */ | |
4440 | if (sym->ts.type == BT_CHARACTER) | |
4441 | { | |
4442 | tree length; | |
4443 | ||
bc21d315 | 4444 | length = sym->ts.u.cl->backend_decl; |
9c4174d8 PT |
4445 | gcc_assert (length || sym->attr.proc_pointer); |
4446 | if (length && !INTEGER_CST_P (length)) | |
6de9cd9a DN |
4447 | { |
4448 | pushdecl (length); | |
0e6df31e | 4449 | rest_of_decl_compilation (length, 1, 0); |
6de9cd9a DN |
4450 | } |
4451 | } | |
b8ff4e88 TB |
4452 | |
4453 | if (sym->attr.codimension && !sym->attr.dummy && !sym->attr.allocatable | |
4454 | && sym->attr.referenced && !sym->attr.use_assoc) | |
4455 | has_coarray_vars = true; | |
6de9cd9a DN |
4456 | } |
4457 | ||
9268ba9a | 4458 | /* Emit debug information for USE statements. */ |
a64f5186 JJ |
4459 | |
4460 | static void | |
4461 | gfc_trans_use_stmts (gfc_namespace * ns) | |
4462 | { | |
4463 | gfc_use_list *use_stmt; | |
4464 | for (use_stmt = ns->use_stmts; use_stmt; use_stmt = use_stmt->next) | |
4465 | { | |
4466 | struct module_htab_entry *entry | |
4467 | = gfc_find_module (use_stmt->module_name); | |
4468 | gfc_use_rename *rent; | |
4469 | ||
4470 | if (entry->namespace_decl == NULL) | |
4471 | { | |
4472 | entry->namespace_decl | |
c2255bc4 AH |
4473 | = build_decl (input_location, |
4474 | NAMESPACE_DECL, | |
a64f5186 JJ |
4475 | get_identifier (use_stmt->module_name), |
4476 | void_type_node); | |
4477 | DECL_EXTERNAL (entry->namespace_decl) = 1; | |
4478 | } | |
9268ba9a | 4479 | gfc_set_backend_locus (&use_stmt->where); |
a64f5186 JJ |
4480 | if (!use_stmt->only_flag) |
4481 | (*debug_hooks->imported_module_or_decl) (entry->namespace_decl, | |
4482 | NULL_TREE, | |
4483 | ns->proc_name->backend_decl, | |
4484 | false); | |
4485 | for (rent = use_stmt->rename; rent; rent = rent->next) | |
4486 | { | |
4487 | tree decl, local_name; | |
4488 | void **slot; | |
4489 | ||
4490 | if (rent->op != INTRINSIC_NONE) | |
4491 | continue; | |
4492 | ||
4493 | slot = htab_find_slot_with_hash (entry->decls, rent->use_name, | |
4494 | htab_hash_string (rent->use_name), | |
4495 | INSERT); | |
4496 | if (*slot == NULL) | |
4497 | { | |
4498 | gfc_symtree *st; | |
4499 | ||
4500 | st = gfc_find_symtree (ns->sym_root, | |
4501 | rent->local_name[0] | |
4502 | ? rent->local_name : rent->use_name); | |
c3f34952 TB |
4503 | |
4504 | /* The following can happen if a derived type is renamed. */ | |
4505 | if (!st) | |
4506 | { | |
4507 | char *name; | |
4508 | name = xstrdup (rent->local_name[0] | |
4509 | ? rent->local_name : rent->use_name); | |
4510 | name[0] = (char) TOUPPER ((unsigned char) name[0]); | |
4511 | st = gfc_find_symtree (ns->sym_root, name); | |
4512 | free (name); | |
4513 | gcc_assert (st); | |
4514 | } | |
1151ccc9 PT |
4515 | |
4516 | /* Sometimes, generic interfaces wind up being over-ruled by a | |
4517 | local symbol (see PR41062). */ | |
4518 | if (!st->n.sym->attr.use_assoc) | |
4519 | continue; | |
4520 | ||
9268ba9a JJ |
4521 | if (st->n.sym->backend_decl |
4522 | && DECL_P (st->n.sym->backend_decl) | |
4523 | && st->n.sym->module | |
4524 | && strcmp (st->n.sym->module, use_stmt->module_name) == 0) | |
a64f5186 | 4525 | { |
9268ba9a JJ |
4526 | gcc_assert (DECL_EXTERNAL (entry->namespace_decl) |
4527 | || (TREE_CODE (st->n.sym->backend_decl) | |
4528 | != VAR_DECL)); | |
a64f5186 JJ |
4529 | decl = copy_node (st->n.sym->backend_decl); |
4530 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
4531 | DECL_EXTERNAL (decl) = 1; | |
4532 | DECL_IGNORED_P (decl) = 0; | |
4533 | DECL_INITIAL (decl) = NULL_TREE; | |
4534 | } | |
5f673c6a TB |
4535 | else if (st->n.sym->attr.flavor == FL_NAMELIST |
4536 | && st->n.sym->attr.use_only | |
4537 | && st->n.sym->module | |
4538 | && strcmp (st->n.sym->module, use_stmt->module_name) | |
4539 | == 0) | |
4540 | { | |
4541 | decl = generate_namelist_decl (st->n.sym); | |
4542 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
4543 | DECL_EXTERNAL (decl) = 1; | |
4544 | DECL_IGNORED_P (decl) = 0; | |
4545 | DECL_INITIAL (decl) = NULL_TREE; | |
4546 | } | |
a64f5186 JJ |
4547 | else |
4548 | { | |
4549 | *slot = error_mark_node; | |
4550 | htab_clear_slot (entry->decls, slot); | |
4551 | continue; | |
4552 | } | |
4553 | *slot = decl; | |
4554 | } | |
4555 | decl = (tree) *slot; | |
4556 | if (rent->local_name[0]) | |
4557 | local_name = get_identifier (rent->local_name); | |
4558 | else | |
4559 | local_name = NULL_TREE; | |
9268ba9a | 4560 | gfc_set_backend_locus (&rent->where); |
a64f5186 JJ |
4561 | (*debug_hooks->imported_module_or_decl) (decl, local_name, |
4562 | ns->proc_name->backend_decl, | |
4563 | !use_stmt->only_flag); | |
4564 | } | |
4565 | } | |
6de9cd9a DN |
4566 | } |
4567 | ||
9268ba9a | 4568 | |
bd11e37d JJ |
4569 | /* Return true if expr is a constant initializer that gfc_conv_initializer |
4570 | will handle. */ | |
4571 | ||
4572 | static bool | |
4573 | check_constant_initializer (gfc_expr *expr, gfc_typespec *ts, bool array, | |
4574 | bool pointer) | |
4575 | { | |
4576 | gfc_constructor *c; | |
4577 | gfc_component *cm; | |
4578 | ||
4579 | if (pointer) | |
4580 | return true; | |
4581 | else if (array) | |
4582 | { | |
4583 | if (expr->expr_type == EXPR_CONSTANT || expr->expr_type == EXPR_NULL) | |
4584 | return true; | |
4585 | else if (expr->expr_type == EXPR_STRUCTURE) | |
4586 | return check_constant_initializer (expr, ts, false, false); | |
4587 | else if (expr->expr_type != EXPR_ARRAY) | |
4588 | return false; | |
b7e75771 JD |
4589 | for (c = gfc_constructor_first (expr->value.constructor); |
4590 | c; c = gfc_constructor_next (c)) | |
bd11e37d JJ |
4591 | { |
4592 | if (c->iterator) | |
4593 | return false; | |
4594 | if (c->expr->expr_type == EXPR_STRUCTURE) | |
4595 | { | |
4596 | if (!check_constant_initializer (c->expr, ts, false, false)) | |
4597 | return false; | |
4598 | } | |
4599 | else if (c->expr->expr_type != EXPR_CONSTANT) | |
4600 | return false; | |
4601 | } | |
4602 | return true; | |
4603 | } | |
4604 | else switch (ts->type) | |
4605 | { | |
4606 | case BT_DERIVED: | |
4607 | if (expr->expr_type != EXPR_STRUCTURE) | |
4608 | return false; | |
bc21d315 | 4609 | cm = expr->ts.u.derived->components; |
b7e75771 JD |
4610 | for (c = gfc_constructor_first (expr->value.constructor); |
4611 | c; c = gfc_constructor_next (c), cm = cm->next) | |
bd11e37d JJ |
4612 | { |
4613 | if (!c->expr || cm->attr.allocatable) | |
4614 | continue; | |
4615 | if (!check_constant_initializer (c->expr, &cm->ts, | |
4616 | cm->attr.dimension, | |
4617 | cm->attr.pointer)) | |
4618 | return false; | |
4619 | } | |
4620 | return true; | |
4621 | default: | |
4622 | return expr->expr_type == EXPR_CONSTANT; | |
4623 | } | |
4624 | } | |
4625 | ||
4626 | /* Emit debug info for parameters and unreferenced variables with | |
4627 | initializers. */ | |
4628 | ||
4629 | static void | |
4630 | gfc_emit_parameter_debug_info (gfc_symbol *sym) | |
4631 | { | |
4632 | tree decl; | |
4633 | ||
4634 | if (sym->attr.flavor != FL_PARAMETER | |
4635 | && (sym->attr.flavor != FL_VARIABLE || sym->attr.referenced)) | |
4636 | return; | |
4637 | ||
4638 | if (sym->backend_decl != NULL | |
4639 | || sym->value == NULL | |
4640 | || sym->attr.use_assoc | |
4641 | || sym->attr.dummy | |
4642 | || sym->attr.result | |
4643 | || sym->attr.function | |
4644 | || sym->attr.intrinsic | |
4645 | || sym->attr.pointer | |
4646 | || sym->attr.allocatable | |
4647 | || sym->attr.cray_pointee | |
4648 | || sym->attr.threadprivate | |
4649 | || sym->attr.is_bind_c | |
4650 | || sym->attr.subref_array_pointer | |
4651 | || sym->attr.assign) | |
4652 | return; | |
4653 | ||
4654 | if (sym->ts.type == BT_CHARACTER) | |
4655 | { | |
bc21d315 JW |
4656 | gfc_conv_const_charlen (sym->ts.u.cl); |
4657 | if (sym->ts.u.cl->backend_decl == NULL | |
4658 | || TREE_CODE (sym->ts.u.cl->backend_decl) != INTEGER_CST) | |
bd11e37d JJ |
4659 | return; |
4660 | } | |
bc21d315 | 4661 | else if (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
bd11e37d JJ |
4662 | return; |
4663 | ||
4664 | if (sym->as) | |
4665 | { | |
4666 | int n; | |
4667 | ||
4668 | if (sym->as->type != AS_EXPLICIT) | |
4669 | return; | |
4670 | for (n = 0; n < sym->as->rank; n++) | |
4671 | if (sym->as->lower[n]->expr_type != EXPR_CONSTANT | |
4672 | || sym->as->upper[n] == NULL | |
4673 | || sym->as->upper[n]->expr_type != EXPR_CONSTANT) | |
4674 | return; | |
4675 | } | |
4676 | ||
4677 | if (!check_constant_initializer (sym->value, &sym->ts, | |
4678 | sym->attr.dimension, false)) | |
4679 | return; | |
4680 | ||
b8ff4e88 TB |
4681 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && sym->attr.codimension) |
4682 | return; | |
4683 | ||
bd11e37d | 4684 | /* Create the decl for the variable or constant. */ |
c2255bc4 AH |
4685 | decl = build_decl (input_location, |
4686 | sym->attr.flavor == FL_PARAMETER ? CONST_DECL : VAR_DECL, | |
bd11e37d JJ |
4687 | gfc_sym_identifier (sym), gfc_sym_type (sym)); |
4688 | if (sym->attr.flavor == FL_PARAMETER) | |
4689 | TREE_READONLY (decl) = 1; | |
4690 | gfc_set_decl_location (decl, &sym->declared_at); | |
4691 | if (sym->attr.dimension) | |
4692 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
4693 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4694 | TREE_STATIC (decl) = 1; | |
4695 | TREE_USED (decl) = 1; | |
4696 | if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
4697 | TREE_PUBLIC (decl) = 1; | |
1d0134b3 JW |
4698 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
4699 | TREE_TYPE (decl), | |
4700 | sym->attr.dimension, | |
4701 | false, false); | |
9de41e57 | 4702 | debug_hooks->global_decl (decl); |
bd11e37d JJ |
4703 | } |
4704 | ||
b8ff4e88 TB |
4705 | |
4706 | static void | |
4707 | generate_coarray_sym_init (gfc_symbol *sym) | |
4708 | { | |
4709 | tree tmp, size, decl, token; | |
bc0229f9 TB |
4710 | bool is_lock_type; |
4711 | int reg_type; | |
b8ff4e88 TB |
4712 | |
4713 | if (sym->attr.dummy || sym->attr.allocatable || !sym->attr.codimension | |
d7463e5b TB |
4714 | || sym->attr.use_assoc || !sym->attr.referenced |
4715 | || sym->attr.select_type_temporary) | |
b8ff4e88 TB |
4716 | return; |
4717 | ||
4718 | decl = sym->backend_decl; | |
4719 | TREE_USED(decl) = 1; | |
4720 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (decl))); | |
4721 | ||
bc0229f9 TB |
4722 | is_lock_type = sym->ts.type == BT_DERIVED |
4723 | && sym->ts.u.derived->from_intmod == INTMOD_ISO_FORTRAN_ENV | |
4724 | && sym->ts.u.derived->intmod_sym_id == ISOFORTRAN_LOCK_TYPE; | |
4725 | ||
b8ff4e88 TB |
4726 | /* FIXME: Workaround for PR middle-end/49106, cf. also PR middle-end/49108 |
4727 | to make sure the variable is not optimized away. */ | |
4728 | DECL_PRESERVE_P (DECL_CONTEXT (decl)) = 1; | |
4729 | ||
bc0229f9 TB |
4730 | /* For lock types, we pass the array size as only the library knows the |
4731 | size of the variable. */ | |
4732 | if (is_lock_type) | |
4733 | size = gfc_index_one_node; | |
4734 | else | |
4735 | size = TYPE_SIZE_UNIT (gfc_get_element_type (TREE_TYPE (decl))); | |
b8ff4e88 | 4736 | |
8b704316 | 4737 | /* Ensure that we do not have size=0 for zero-sized arrays. */ |
107a9bc9 TB |
4738 | size = fold_build2_loc (input_location, MAX_EXPR, size_type_node, |
4739 | fold_convert (size_type_node, size), | |
4740 | build_int_cst (size_type_node, 1)); | |
4741 | ||
b8ff4e88 TB |
4742 | if (GFC_TYPE_ARRAY_RANK (TREE_TYPE (decl))) |
4743 | { | |
4744 | tmp = GFC_TYPE_ARRAY_SIZE (TREE_TYPE (decl)); | |
4745 | size = fold_build2_loc (input_location, MULT_EXPR, size_type_node, | |
107a9bc9 | 4746 | fold_convert (size_type_node, tmp), size); |
b8ff4e88 TB |
4747 | } |
4748 | ||
4749 | gcc_assert (GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE (decl)) != NULL_TREE); | |
4750 | token = gfc_build_addr_expr (ppvoid_type_node, | |
4751 | GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE(decl))); | |
bc0229f9 TB |
4752 | if (is_lock_type) |
4753 | reg_type = sym->attr.artificial ? GFC_CAF_CRITICAL : GFC_CAF_LOCK_STATIC; | |
4754 | else | |
4755 | reg_type = GFC_CAF_COARRAY_STATIC; | |
b8ff4e88 | 4756 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_register, 6, size, |
bc0229f9 | 4757 | build_int_cst (integer_type_node, reg_type), |
b8ff4e88 TB |
4758 | token, null_pointer_node, /* token, stat. */ |
4759 | null_pointer_node, /* errgmsg, errmsg_len. */ | |
4760 | build_int_cst (integer_type_node, 0)); | |
b8ff4e88 TB |
4761 | gfc_add_modify (&caf_init_block, decl, fold_convert (TREE_TYPE (decl), tmp)); |
4762 | ||
b8ff4e88 TB |
4763 | /* Handle "static" initializer. */ |
4764 | if (sym->value) | |
4765 | { | |
4766 | sym->attr.pointer = 1; | |
4767 | tmp = gfc_trans_assignment (gfc_lval_expr_from_sym (sym), sym->value, | |
4768 | true, false); | |
4769 | sym->attr.pointer = 0; | |
4770 | gfc_add_expr_to_block (&caf_init_block, tmp); | |
4771 | } | |
4772 | } | |
4773 | ||
4774 | ||
4775 | /* Generate constructor function to initialize static, nonallocatable | |
4776 | coarrays. */ | |
4777 | ||
4778 | static void | |
4779 | generate_coarray_init (gfc_namespace * ns __attribute((unused))) | |
4780 | { | |
4781 | tree fndecl, tmp, decl, save_fn_decl; | |
4782 | ||
4783 | save_fn_decl = current_function_decl; | |
4784 | push_function_context (); | |
4785 | ||
4786 | tmp = build_function_type_list (void_type_node, NULL_TREE); | |
4787 | fndecl = build_decl (input_location, FUNCTION_DECL, | |
4788 | create_tmp_var_name ("_caf_init"), tmp); | |
4789 | ||
4790 | DECL_STATIC_CONSTRUCTOR (fndecl) = 1; | |
4791 | SET_DECL_INIT_PRIORITY (fndecl, DEFAULT_INIT_PRIORITY); | |
4792 | ||
4793 | decl = build_decl (input_location, RESULT_DECL, NULL_TREE, void_type_node); | |
4794 | DECL_ARTIFICIAL (decl) = 1; | |
4795 | DECL_IGNORED_P (decl) = 1; | |
4796 | DECL_CONTEXT (decl) = fndecl; | |
4797 | DECL_RESULT (fndecl) = decl; | |
4798 | ||
4799 | pushdecl (fndecl); | |
4800 | current_function_decl = fndecl; | |
4801 | announce_function (fndecl); | |
4802 | ||
4803 | rest_of_decl_compilation (fndecl, 0, 0); | |
4804 | make_decl_rtl (fndecl); | |
b6b27e98 | 4805 | allocate_struct_function (fndecl, false); |
b8ff4e88 | 4806 | |
87a60f68 | 4807 | pushlevel (); |
b8ff4e88 TB |
4808 | gfc_init_block (&caf_init_block); |
4809 | ||
4810 | gfc_traverse_ns (ns, generate_coarray_sym_init); | |
4811 | ||
4812 | DECL_SAVED_TREE (fndecl) = gfc_finish_block (&caf_init_block); | |
4813 | decl = getdecls (); | |
4814 | ||
87a60f68 | 4815 | poplevel (1, 1); |
b8ff4e88 TB |
4816 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; |
4817 | ||
4818 | DECL_SAVED_TREE (fndecl) | |
4819 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
4820 | DECL_INITIAL (fndecl)); | |
4821 | dump_function (TDI_original, fndecl); | |
4822 | ||
4823 | cfun->function_end_locus = input_location; | |
4824 | set_cfun (NULL); | |
4825 | ||
4826 | if (decl_function_context (fndecl)) | |
d52f5295 | 4827 | (void) cgraph_node::create (fndecl); |
b8ff4e88 | 4828 | else |
3dafb85c | 4829 | cgraph_node::finalize_function (fndecl, true); |
b8ff4e88 TB |
4830 | |
4831 | pop_function_context (); | |
4832 | current_function_decl = save_fn_decl; | |
4833 | } | |
4834 | ||
4835 | ||
5f673c6a TB |
4836 | static void |
4837 | create_module_nml_decl (gfc_symbol *sym) | |
4838 | { | |
4839 | if (sym->attr.flavor == FL_NAMELIST) | |
4840 | { | |
4841 | tree decl = generate_namelist_decl (sym); | |
4842 | pushdecl (decl); | |
4843 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
4844 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4845 | rest_of_decl_compilation (decl, 1, 0); | |
4846 | gfc_module_add_decl (cur_module, decl); | |
4847 | } | |
4848 | } | |
4849 | ||
4850 | ||
9268ba9a JJ |
4851 | /* Generate all the required code for module variables. */ |
4852 | ||
4853 | void | |
4854 | gfc_generate_module_vars (gfc_namespace * ns) | |
4855 | { | |
4856 | module_namespace = ns; | |
4857 | cur_module = gfc_find_module (ns->proc_name->name); | |
4858 | ||
4859 | /* Check if the frontend left the namespace in a reasonable state. */ | |
4860 | gcc_assert (ns->proc_name && !ns->proc_name->tlink); | |
4861 | ||
4862 | /* Generate COMMON blocks. */ | |
4863 | gfc_trans_common (ns); | |
4864 | ||
b8ff4e88 TB |
4865 | has_coarray_vars = false; |
4866 | ||
9268ba9a JJ |
4867 | /* Create decls for all the module variables. */ |
4868 | gfc_traverse_ns (ns, gfc_create_module_variable); | |
5f673c6a | 4869 | gfc_traverse_ns (ns, create_module_nml_decl); |
9268ba9a | 4870 | |
b8ff4e88 TB |
4871 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
4872 | generate_coarray_init (ns); | |
4873 | ||
9268ba9a JJ |
4874 | cur_module = NULL; |
4875 | ||
4876 | gfc_trans_use_stmts (ns); | |
bd11e37d | 4877 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
9268ba9a JJ |
4878 | } |
4879 | ||
4880 | ||
6de9cd9a DN |
4881 | static void |
4882 | gfc_generate_contained_functions (gfc_namespace * parent) | |
4883 | { | |
4884 | gfc_namespace *ns; | |
4885 | ||
4886 | /* We create all the prototypes before generating any code. */ | |
4887 | for (ns = parent->contained; ns; ns = ns->sibling) | |
4888 | { | |
4889 | /* Skip namespaces from used modules. */ | |
4890 | if (ns->parent != parent) | |
4891 | continue; | |
4892 | ||
fb55ca75 | 4893 | gfc_create_function_decl (ns, false); |
6de9cd9a DN |
4894 | } |
4895 | ||
4896 | for (ns = parent->contained; ns; ns = ns->sibling) | |
4897 | { | |
4898 | /* Skip namespaces from used modules. */ | |
4899 | if (ns->parent != parent) | |
4900 | continue; | |
4901 | ||
4902 | gfc_generate_function_code (ns); | |
4903 | } | |
4904 | } | |
4905 | ||
4906 | ||
3e978d30 PT |
4907 | /* Drill down through expressions for the array specification bounds and |
4908 | character length calling generate_local_decl for all those variables | |
4909 | that have not already been declared. */ | |
4910 | ||
4911 | static void | |
4912 | generate_local_decl (gfc_symbol *); | |
4913 | ||
908a2235 | 4914 | /* Traverse expr, marking all EXPR_VARIABLE symbols referenced. */ |
3e978d30 | 4915 | |
908a2235 PT |
4916 | static bool |
4917 | expr_decls (gfc_expr *e, gfc_symbol *sym, | |
4918 | int *f ATTRIBUTE_UNUSED) | |
4919 | { | |
4920 | if (e->expr_type != EXPR_VARIABLE | |
4921 | || sym == e->symtree->n.sym | |
3e978d30 PT |
4922 | || e->symtree->n.sym->mark |
4923 | || e->symtree->n.sym->ns != sym->ns) | |
908a2235 | 4924 | return false; |
3e978d30 | 4925 | |
908a2235 PT |
4926 | generate_local_decl (e->symtree->n.sym); |
4927 | return false; | |
4928 | } | |
3e978d30 | 4929 | |
908a2235 PT |
4930 | static void |
4931 | generate_expr_decls (gfc_symbol *sym, gfc_expr *e) | |
4932 | { | |
4933 | gfc_traverse_expr (e, sym, expr_decls, 0); | |
3e978d30 PT |
4934 | } |
4935 | ||
4936 | ||
66e4ab31 | 4937 | /* Check for dependencies in the character length and array spec. */ |
3e978d30 PT |
4938 | |
4939 | static void | |
4940 | generate_dependency_declarations (gfc_symbol *sym) | |
4941 | { | |
4942 | int i; | |
4943 | ||
4944 | if (sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
4945 | && sym->ts.u.cl |
4946 | && sym->ts.u.cl->length | |
4947 | && sym->ts.u.cl->length->expr_type != EXPR_CONSTANT) | |
4948 | generate_expr_decls (sym, sym->ts.u.cl->length); | |
3e978d30 PT |
4949 | |
4950 | if (sym->as && sym->as->rank) | |
4951 | { | |
4952 | for (i = 0; i < sym->as->rank; i++) | |
4953 | { | |
4954 | generate_expr_decls (sym, sym->as->lower[i]); | |
4955 | generate_expr_decls (sym, sym->as->upper[i]); | |
4956 | } | |
4957 | } | |
4958 | } | |
4959 | ||
4960 | ||
6de9cd9a DN |
4961 | /* Generate decls for all local variables. We do this to ensure correct |
4962 | handling of expressions which only appear in the specification of | |
4963 | other functions. */ | |
4964 | ||
4965 | static void | |
4966 | generate_local_decl (gfc_symbol * sym) | |
4967 | { | |
4968 | if (sym->attr.flavor == FL_VARIABLE) | |
4969 | { | |
b8ff4e88 TB |
4970 | if (sym->attr.codimension && !sym->attr.dummy && !sym->attr.allocatable |
4971 | && sym->attr.referenced && !sym->attr.use_assoc) | |
4972 | has_coarray_vars = true; | |
4973 | ||
3e978d30 | 4974 | if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master) |
2c69d527 | 4975 | generate_dependency_declarations (sym); |
3e978d30 | 4976 | |
6de9cd9a | 4977 | if (sym->attr.referenced) |
2c69d527 | 4978 | gfc_get_symbol_decl (sym); |
4ed44ccc DF |
4979 | |
4980 | /* Warnings for unused dummy arguments. */ | |
c8877f40 | 4981 | else if (sym->attr.dummy && !sym->attr.in_namelist) |
ad6d42e1 | 4982 | { |
4ed44ccc DF |
4983 | /* INTENT(out) dummy arguments are likely meant to be set. */ |
4984 | if (gfc_option.warn_unused_dummy_argument | |
4985 | && sym->attr.intent == INTENT_OUT) | |
4986 | { | |
4987 | if (sym->ts.type != BT_DERIVED) | |
4988 | gfc_warning ("Dummy argument '%s' at %L was declared " | |
4989 | "INTENT(OUT) but was not set", sym->name, | |
4990 | &sym->declared_at); | |
bf7a6c1c JW |
4991 | else if (!gfc_has_default_initializer (sym->ts.u.derived) |
4992 | && !sym->ts.u.derived->attr.zero_comp) | |
4ed44ccc DF |
4993 | gfc_warning ("Derived-type dummy argument '%s' at %L was " |
4994 | "declared INTENT(OUT) but was not set and " | |
4995 | "does not have a default initializer", | |
4996 | sym->name, &sym->declared_at); | |
fba5ace0 TB |
4997 | if (sym->backend_decl != NULL_TREE) |
4998 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4ed44ccc DF |
4999 | } |
5000 | else if (gfc_option.warn_unused_dummy_argument) | |
fba5ace0 TB |
5001 | { |
5002 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, | |
4ed44ccc | 5003 | &sym->declared_at); |
fba5ace0 TB |
5004 | if (sym->backend_decl != NULL_TREE) |
5005 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
5006 | } | |
ad6d42e1 | 5007 | } |
4ed44ccc | 5008 | |
f8d0aee5 | 5009 | /* Warn for unused variables, but not if they're inside a common |
ecdbf2cd | 5010 | block or a namelist. */ |
ce738b86 | 5011 | else if (warn_unused_variable |
ecdbf2cd | 5012 | && !(sym->attr.in_common || sym->mark || sym->attr.in_namelist)) |
fba5ace0 | 5013 | { |
ecdbf2cd JW |
5014 | if (sym->attr.use_only) |
5015 | { | |
5016 | gfc_warning ("Unused module variable '%s' which has been " | |
5017 | "explicitly imported at %L", sym->name, | |
5018 | &sym->declared_at); | |
5019 | if (sym->backend_decl != NULL_TREE) | |
5020 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
5021 | } | |
5022 | else if (!sym->attr.use_assoc) | |
5023 | { | |
5024 | gfc_warning ("Unused variable '%s' declared at %L", | |
5025 | sym->name, &sym->declared_at); | |
5026 | if (sym->backend_decl != NULL_TREE) | |
5027 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
5028 | } | |
fba5ace0 | 5029 | } |
2c69d527 | 5030 | |
417ab240 JJ |
5031 | /* For variable length CHARACTER parameters, the PARM_DECL already |
5032 | references the length variable, so force gfc_get_symbol_decl | |
5033 | even when not referenced. If optimize > 0, it will be optimized | |
5034 | away anyway. But do this only after emitting -Wunused-parameter | |
5035 | warning if requested. */ | |
2c69d527 PT |
5036 | if (sym->attr.dummy && !sym->attr.referenced |
5037 | && sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
5038 | && sym->ts.u.cl->backend_decl != NULL |
5039 | && TREE_CODE (sym->ts.u.cl->backend_decl) == VAR_DECL) | |
417ab240 JJ |
5040 | { |
5041 | sym->attr.referenced = 1; | |
5042 | gfc_get_symbol_decl (sym); | |
5043 | } | |
534fd534 | 5044 | |
5af2eace PT |
5045 | /* INTENT(out) dummy arguments and result variables with allocatable |
5046 | components are reset by default and need to be set referenced to | |
5047 | generate the code for nullification and automatic lengths. */ | |
5048 | if (!sym->attr.referenced | |
2c69d527 | 5049 | && sym->ts.type == BT_DERIVED |
bc21d315 | 5050 | && sym->ts.u.derived->attr.alloc_comp |
758e12af | 5051 | && !sym->attr.pointer |
5af2eace PT |
5052 | && ((sym->attr.dummy && sym->attr.intent == INTENT_OUT) |
5053 | || | |
5054 | (sym->attr.result && sym != sym->result))) | |
2c69d527 PT |
5055 | { |
5056 | sym->attr.referenced = 1; | |
5057 | gfc_get_symbol_decl (sym); | |
5058 | } | |
5059 | ||
06c7153f TB |
5060 | /* Check for dependencies in the array specification and string |
5061 | length, adding the necessary declarations to the function. We | |
5062 | mark the symbol now, as well as in traverse_ns, to prevent | |
5063 | getting stuck in a circular dependency. */ | |
5064 | sym->mark = 1; | |
6de9cd9a | 5065 | } |
33c0c5e9 DF |
5066 | else if (sym->attr.flavor == FL_PARAMETER) |
5067 | { | |
d92693b4 | 5068 | if (warn_unused_parameter |
dbad8e71 TB |
5069 | && !sym->attr.referenced) |
5070 | { | |
5071 | if (!sym->attr.use_assoc) | |
5072 | gfc_warning ("Unused parameter '%s' declared at %L", sym->name, | |
5073 | &sym->declared_at); | |
5074 | else if (sym->attr.use_only) | |
5075 | gfc_warning ("Unused parameter '%s' which has been explicitly " | |
5076 | "imported at %L", sym->name, &sym->declared_at); | |
5077 | } | |
33c0c5e9 | 5078 | } |
766d0c8c DF |
5079 | else if (sym->attr.flavor == FL_PROCEDURE) |
5080 | { | |
5081 | /* TODO: move to the appropriate place in resolve.c. */ | |
5082 | if (warn_return_type | |
5083 | && sym->attr.function | |
5084 | && sym->result | |
5085 | && sym != sym->result | |
5086 | && !sym->result->attr.referenced | |
5087 | && !sym->attr.use_assoc | |
5088 | && sym->attr.if_source != IFSRC_IFBODY) | |
5089 | { | |
5090 | gfc_warning ("Return value '%s' of function '%s' declared at " | |
5091 | "%L not set", sym->result->name, sym->name, | |
5092 | &sym->result->declared_at); | |
5093 | ||
5094 | /* Prevents "Unused variable" warning for RESULT variables. */ | |
06c7153f | 5095 | sym->result->mark = 1; |
766d0c8c DF |
5096 | } |
5097 | } | |
a8b3b0b6 | 5098 | |
8b16d231 CR |
5099 | if (sym->attr.dummy == 1) |
5100 | { | |
5101 | /* Modify the tree type for scalar character dummy arguments of bind(c) | |
5102 | procedures if they are passed by value. The tree type for them will | |
5103 | be promoted to INTEGER_TYPE for the middle end, which appears to be | |
5104 | what C would do with characters passed by-value. The value attribute | |
5105 | implies the dummy is a scalar. */ | |
5106 | if (sym->attr.value == 1 && sym->backend_decl != NULL | |
5107 | && sym->ts.type == BT_CHARACTER && sym->ts.is_c_interop | |
5108 | && sym->ns->proc_name != NULL && sym->ns->proc_name->attr.is_bind_c) | |
e032c2a1 | 5109 | gfc_conv_scalar_char_value (sym, NULL, NULL); |
d20597cb TK |
5110 | |
5111 | /* Unused procedure passed as dummy argument. */ | |
5112 | if (sym->attr.flavor == FL_PROCEDURE) | |
5113 | { | |
5114 | if (!sym->attr.referenced) | |
5115 | { | |
5116 | if (gfc_option.warn_unused_dummy_argument) | |
5117 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, | |
8b704316 | 5118 | &sym->declared_at); |
d20597cb TK |
5119 | } |
5120 | ||
5121 | /* Silence bogus "unused parameter" warnings from the | |
5122 | middle end. */ | |
5123 | if (sym->backend_decl != NULL_TREE) | |
5124 | TREE_NO_WARNING (sym->backend_decl) = 1; | |
5125 | } | |
8b16d231 CR |
5126 | } |
5127 | ||
a8b3b0b6 CR |
5128 | /* Make sure we convert the types of the derived types from iso_c_binding |
5129 | into (void *). */ | |
5130 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
5131 | && sym->ts.type == BT_DERIVED) | |
5132 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
6de9cd9a DN |
5133 | } |
5134 | ||
5f673c6a TB |
5135 | |
5136 | static void | |
5137 | generate_local_nml_decl (gfc_symbol * sym) | |
5138 | { | |
5139 | if (sym->attr.flavor == FL_NAMELIST && !sym->attr.use_assoc) | |
5140 | { | |
5141 | tree decl = generate_namelist_decl (sym); | |
5142 | pushdecl (decl); | |
5143 | } | |
5144 | } | |
5145 | ||
5146 | ||
6de9cd9a DN |
5147 | static void |
5148 | generate_local_vars (gfc_namespace * ns) | |
5149 | { | |
5150 | gfc_traverse_ns (ns, generate_local_decl); | |
5f673c6a | 5151 | gfc_traverse_ns (ns, generate_local_nml_decl); |
6de9cd9a DN |
5152 | } |
5153 | ||
5154 | ||
3d79abbd PB |
5155 | /* Generate a switch statement to jump to the correct entry point. Also |
5156 | creates the label decls for the entry points. */ | |
6de9cd9a | 5157 | |
3d79abbd PB |
5158 | static tree |
5159 | gfc_trans_entry_master_switch (gfc_entry_list * el) | |
6de9cd9a | 5160 | { |
3d79abbd PB |
5161 | stmtblock_t block; |
5162 | tree label; | |
5163 | tree tmp; | |
5164 | tree val; | |
6de9cd9a | 5165 | |
3d79abbd PB |
5166 | gfc_init_block (&block); |
5167 | for (; el; el = el->next) | |
5168 | { | |
5169 | /* Add the case label. */ | |
c006df4e | 5170 | label = gfc_build_label_decl (NULL_TREE); |
7d60be94 | 5171 | val = build_int_cst (gfc_array_index_type, el->id); |
3d528853 | 5172 | tmp = build_case_label (val, NULL_TREE, label); |
3d79abbd | 5173 | gfc_add_expr_to_block (&block, tmp); |
7389bce6 | 5174 | |
3d79abbd PB |
5175 | /* And jump to the actual entry point. */ |
5176 | label = gfc_build_label_decl (NULL_TREE); | |
3d79abbd PB |
5177 | tmp = build1_v (GOTO_EXPR, label); |
5178 | gfc_add_expr_to_block (&block, tmp); | |
5179 | ||
5180 | /* Save the label decl. */ | |
5181 | el->label = label; | |
5182 | } | |
5183 | tmp = gfc_finish_block (&block); | |
5184 | /* The first argument selects the entry point. */ | |
5185 | val = DECL_ARGUMENTS (current_function_decl); | |
0cd2402d SB |
5186 | tmp = fold_build3_loc (input_location, SWITCH_EXPR, NULL_TREE, |
5187 | val, tmp, NULL_TREE); | |
3d79abbd | 5188 | return tmp; |
6de9cd9a DN |
5189 | } |
5190 | ||
44de5aeb | 5191 | |
cadb8f42 DK |
5192 | /* Add code to string lengths of actual arguments passed to a function against |
5193 | the expected lengths of the dummy arguments. */ | |
5194 | ||
5195 | static void | |
5196 | add_argument_checking (stmtblock_t *block, gfc_symbol *sym) | |
5197 | { | |
5198 | gfc_formal_arglist *formal; | |
5199 | ||
4cbc9039 | 5200 | for (formal = gfc_sym_get_dummy_args (sym); formal; formal = formal->next) |
be94c034 | 5201 | if (formal->sym && formal->sym->ts.type == BT_CHARACTER |
9be1227b | 5202 | && !formal->sym->ts.deferred) |
cadb8f42 DK |
5203 | { |
5204 | enum tree_code comparison; | |
5205 | tree cond; | |
5206 | tree argname; | |
5207 | gfc_symbol *fsym; | |
5208 | gfc_charlen *cl; | |
5209 | const char *message; | |
5210 | ||
5211 | fsym = formal->sym; | |
bc21d315 | 5212 | cl = fsym->ts.u.cl; |
cadb8f42 DK |
5213 | |
5214 | gcc_assert (cl); | |
5215 | gcc_assert (cl->passed_length != NULL_TREE); | |
5216 | gcc_assert (cl->backend_decl != NULL_TREE); | |
5217 | ||
5218 | /* For POINTER, ALLOCATABLE and assumed-shape dummy arguments, the | |
5219 | string lengths must match exactly. Otherwise, it is only required | |
cb7a8961 TB |
5220 | that the actual string length is *at least* the expected one. |
5221 | Sequence association allows for a mismatch of the string length | |
5222 | if the actual argument is (part of) an array, but only if the | |
5223 | dummy argument is an array. (See "Sequence association" in | |
5224 | Section 12.4.1.4 for F95 and 12.4.1.5 for F2003.) */ | |
be94c034 | 5225 | if (fsym->attr.pointer || fsym->attr.allocatable |
c62c6622 TB |
5226 | || (fsym->as && (fsym->as->type == AS_ASSUMED_SHAPE |
5227 | || fsym->as->type == AS_ASSUMED_RANK))) | |
cadb8f42 DK |
5228 | { |
5229 | comparison = NE_EXPR; | |
5230 | message = _("Actual string length does not match the declared one" | |
5231 | " for dummy argument '%s' (%ld/%ld)"); | |
5232 | } | |
cb7a8961 TB |
5233 | else if (fsym->as && fsym->as->rank != 0) |
5234 | continue; | |
cadb8f42 DK |
5235 | else |
5236 | { | |
5237 | comparison = LT_EXPR; | |
5238 | message = _("Actual string length is shorter than the declared one" | |
5239 | " for dummy argument '%s' (%ld/%ld)"); | |
5240 | } | |
5241 | ||
5242 | /* Build the condition. For optional arguments, an actual length | |
5243 | of 0 is also acceptable if the associated string is NULL, which | |
5244 | means the argument was not passed. */ | |
bc98ed60 TB |
5245 | cond = fold_build2_loc (input_location, comparison, boolean_type_node, |
5246 | cl->passed_length, cl->backend_decl); | |
cadb8f42 DK |
5247 | if (fsym->attr.optional) |
5248 | { | |
5249 | tree not_absent; | |
5250 | tree not_0length; | |
5251 | tree absent_failed; | |
5252 | ||
bc98ed60 TB |
5253 | not_0length = fold_build2_loc (input_location, NE_EXPR, |
5254 | boolean_type_node, | |
5255 | cl->passed_length, | |
e8160c9a | 5256 | build_zero_cst (gfc_charlen_type_node)); |
702a738b PT |
5257 | /* The symbol needs to be referenced for gfc_get_symbol_decl. */ |
5258 | fsym->attr.referenced = 1; | |
5259 | not_absent = gfc_conv_expr_present (fsym); | |
cadb8f42 | 5260 | |
bc98ed60 TB |
5261 | absent_failed = fold_build2_loc (input_location, TRUTH_OR_EXPR, |
5262 | boolean_type_node, not_0length, | |
5263 | not_absent); | |
cadb8f42 | 5264 | |
bc98ed60 TB |
5265 | cond = fold_build2_loc (input_location, TRUTH_AND_EXPR, |
5266 | boolean_type_node, cond, absent_failed); | |
cadb8f42 DK |
5267 | } |
5268 | ||
5269 | /* Build the runtime check. */ | |
5270 | argname = gfc_build_cstring_const (fsym->name); | |
5271 | argname = gfc_build_addr_expr (pchar_type_node, argname); | |
5272 | gfc_trans_runtime_check (true, false, cond, block, &fsym->declared_at, | |
5273 | message, argname, | |
5274 | fold_convert (long_integer_type_node, | |
5275 | cl->passed_length), | |
5276 | fold_convert (long_integer_type_node, | |
5277 | cl->backend_decl)); | |
5278 | } | |
5279 | } | |
5280 | ||
5281 | ||
092231a8 TB |
5282 | static void |
5283 | create_main_function (tree fndecl) | |
5284 | { | |
86c3c481 | 5285 | tree old_context; |
092231a8 TB |
5286 | tree ftn_main; |
5287 | tree tmp, decl, result_decl, argc, argv, typelist, arglist; | |
5288 | stmtblock_t body; | |
5289 | ||
86c3c481 TB |
5290 | old_context = current_function_decl; |
5291 | ||
5292 | if (old_context) | |
5293 | { | |
5294 | push_function_context (); | |
5295 | saved_parent_function_decls = saved_function_decls; | |
5296 | saved_function_decls = NULL_TREE; | |
5297 | } | |
5298 | ||
092231a8 TB |
5299 | /* main() function must be declared with global scope. */ |
5300 | gcc_assert (current_function_decl == NULL_TREE); | |
5301 | ||
5302 | /* Declare the function. */ | |
5303 | tmp = build_function_type_list (integer_type_node, integer_type_node, | |
5304 | build_pointer_type (pchar_type_node), | |
5305 | NULL_TREE); | |
a7ad6c2d | 5306 | main_identifier_node = get_identifier ("main"); |
c2255bc4 AH |
5307 | ftn_main = build_decl (input_location, FUNCTION_DECL, |
5308 | main_identifier_node, tmp); | |
092231a8 TB |
5309 | DECL_EXTERNAL (ftn_main) = 0; |
5310 | TREE_PUBLIC (ftn_main) = 1; | |
5311 | TREE_STATIC (ftn_main) = 1; | |
5312 | DECL_ATTRIBUTES (ftn_main) | |
5313 | = tree_cons (get_identifier("externally_visible"), NULL_TREE, NULL_TREE); | |
5314 | ||
5315 | /* Setup the result declaration (for "return 0"). */ | |
c2255bc4 AH |
5316 | result_decl = build_decl (input_location, |
5317 | RESULT_DECL, NULL_TREE, integer_type_node); | |
092231a8 TB |
5318 | DECL_ARTIFICIAL (result_decl) = 1; |
5319 | DECL_IGNORED_P (result_decl) = 1; | |
5320 | DECL_CONTEXT (result_decl) = ftn_main; | |
5321 | DECL_RESULT (ftn_main) = result_decl; | |
5322 | ||
5323 | pushdecl (ftn_main); | |
5324 | ||
5325 | /* Get the arguments. */ | |
5326 | ||
5327 | arglist = NULL_TREE; | |
5328 | typelist = TYPE_ARG_TYPES (TREE_TYPE (ftn_main)); | |
5329 | ||
5330 | tmp = TREE_VALUE (typelist); | |
c2255bc4 | 5331 | argc = build_decl (input_location, PARM_DECL, get_identifier ("argc"), tmp); |
092231a8 TB |
5332 | DECL_CONTEXT (argc) = ftn_main; |
5333 | DECL_ARG_TYPE (argc) = TREE_VALUE (typelist); | |
5334 | TREE_READONLY (argc) = 1; | |
5335 | gfc_finish_decl (argc); | |
5336 | arglist = chainon (arglist, argc); | |
5337 | ||
5338 | typelist = TREE_CHAIN (typelist); | |
5339 | tmp = TREE_VALUE (typelist); | |
c2255bc4 | 5340 | argv = build_decl (input_location, PARM_DECL, get_identifier ("argv"), tmp); |
092231a8 TB |
5341 | DECL_CONTEXT (argv) = ftn_main; |
5342 | DECL_ARG_TYPE (argv) = TREE_VALUE (typelist); | |
5343 | TREE_READONLY (argv) = 1; | |
5344 | DECL_BY_REFERENCE (argv) = 1; | |
5345 | gfc_finish_decl (argv); | |
5346 | arglist = chainon (arglist, argv); | |
5347 | ||
5348 | DECL_ARGUMENTS (ftn_main) = arglist; | |
5349 | current_function_decl = ftn_main; | |
5350 | announce_function (ftn_main); | |
5351 | ||
5352 | rest_of_decl_compilation (ftn_main, 1, 0); | |
5353 | make_decl_rtl (ftn_main); | |
b6b27e98 | 5354 | allocate_struct_function (ftn_main, false); |
87a60f68 | 5355 | pushlevel (); |
092231a8 TB |
5356 | |
5357 | gfc_init_block (&body); | |
5358 | ||
1cc0e193 | 5359 | /* Call some libgfortran initialization routines, call then MAIN__(). */ |
092231a8 | 5360 | |
a8a5f4a9 | 5361 | /* Call _gfortran_caf_init (*argc, ***argv). */ |
60386f50 TB |
5362 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) |
5363 | { | |
5364 | tree pint_type, pppchar_type; | |
5365 | pint_type = build_pointer_type (integer_type_node); | |
5366 | pppchar_type | |
5367 | = build_pointer_type (build_pointer_type (pchar_type_node)); | |
5368 | ||
a8a5f4a9 | 5369 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_init, 2, |
60386f50 | 5370 | gfc_build_addr_expr (pint_type, argc), |
a8a5f4a9 | 5371 | gfc_build_addr_expr (pppchar_type, argv)); |
60386f50 TB |
5372 | gfc_add_expr_to_block (&body, tmp); |
5373 | } | |
5374 | ||
092231a8 | 5375 | /* Call _gfortran_set_args (argc, argv). */ |
86c3c481 TB |
5376 | TREE_USED (argc) = 1; |
5377 | TREE_USED (argv) = 1; | |
db3927fb AH |
5378 | tmp = build_call_expr_loc (input_location, |
5379 | gfor_fndecl_set_args, 2, argc, argv); | |
092231a8 TB |
5380 | gfc_add_expr_to_block (&body, tmp); |
5381 | ||
5382 | /* Add a call to set_options to set up the runtime library Fortran | |
5383 | language standard parameters. */ | |
5384 | { | |
5385 | tree array_type, array, var; | |
9771b263 | 5386 | vec<constructor_elt, va_gc> *v = NULL; |
092231a8 TB |
5387 | |
5388 | /* Passing a new option to the library requires four modifications: | |
5389 | + add it to the tree_cons list below | |
5390 | + change the array size in the call to build_array_type | |
5391 | + change the first argument to the library call | |
5392 | gfor_fndecl_set_options | |
5393 | + modify the library (runtime/compile_options.c)! */ | |
5394 | ||
8748ad99 NF |
5395 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5396 | build_int_cst (integer_type_node, | |
5397 | gfc_option.warn_std)); | |
5398 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5399 | build_int_cst (integer_type_node, | |
5400 | gfc_option.allow_std)); | |
5401 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5402 | build_int_cst (integer_type_node, pedantic)); | |
de8bd142 JB |
5403 | /* TODO: This is the old -fdump-core option, which is unused but |
5404 | passed due to ABI compatibility; remove when bumping the | |
5405 | library ABI. */ | |
8748ad99 NF |
5406 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5407 | build_int_cst (integer_type_node, | |
de8bd142 | 5408 | 0)); |
8748ad99 NF |
5409 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5410 | build_int_cst (integer_type_node, | |
5411 | gfc_option.flag_backtrace)); | |
5412 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5413 | build_int_cst (integer_type_node, | |
5414 | gfc_option.flag_sign_zero)); | |
5415 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5416 | build_int_cst (integer_type_node, | |
5417 | (gfc_option.rtcheck | |
5418 | & GFC_RTCHECK_BOUNDS))); | |
80b91c0b JB |
5419 | /* TODO: This is the -frange-check option, which no longer affects |
5420 | library behavior; when bumping the library ABI this slot can be | |
5421 | reused for something else. As it is the last element in the | |
1cc0e193 | 5422 | array, we can instead leave it out altogether. */ |
fa86f4f9 TB |
5423 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5424 | build_int_cst (integer_type_node, 0)); | |
8748ad99 NF |
5425 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5426 | build_int_cst (integer_type_node, | |
fa86f4f9 | 5427 | gfc_option.fpe_summary)); |
092231a8 TB |
5428 | |
5429 | array_type = build_array_type (integer_type_node, | |
fa86f4f9 | 5430 | build_index_type (size_int (8))); |
8748ad99 | 5431 | array = build_constructor (array_type, v); |
092231a8 TB |
5432 | TREE_CONSTANT (array) = 1; |
5433 | TREE_STATIC (array) = 1; | |
5434 | ||
5435 | /* Create a static variable to hold the jump table. */ | |
059345ce BS |
5436 | var = build_decl (input_location, VAR_DECL, |
5437 | create_tmp_var_name ("options"), | |
5438 | array_type); | |
5439 | DECL_ARTIFICIAL (var) = 1; | |
5440 | DECL_IGNORED_P (var) = 1; | |
092231a8 TB |
5441 | TREE_CONSTANT (var) = 1; |
5442 | TREE_STATIC (var) = 1; | |
5443 | TREE_READONLY (var) = 1; | |
5444 | DECL_INITIAL (var) = array; | |
059345ce | 5445 | pushdecl (var); |
092231a8 TB |
5446 | var = gfc_build_addr_expr (build_pointer_type (integer_type_node), var); |
5447 | ||
db3927fb AH |
5448 | tmp = build_call_expr_loc (input_location, |
5449 | gfor_fndecl_set_options, 2, | |
fa86f4f9 | 5450 | build_int_cst (integer_type_node, 9), var); |
092231a8 TB |
5451 | gfc_add_expr_to_block (&body, tmp); |
5452 | } | |
5453 | ||
5454 | /* If -ffpe-trap option was provided, add a call to set_fpe so that | |
5455 | the library will raise a FPE when needed. */ | |
5456 | if (gfc_option.fpe != 0) | |
5457 | { | |
db3927fb AH |
5458 | tmp = build_call_expr_loc (input_location, |
5459 | gfor_fndecl_set_fpe, 1, | |
092231a8 TB |
5460 | build_int_cst (integer_type_node, |
5461 | gfc_option.fpe)); | |
5462 | gfc_add_expr_to_block (&body, tmp); | |
5463 | } | |
5464 | ||
5465 | /* If this is the main program and an -fconvert option was provided, | |
5466 | add a call to set_convert. */ | |
5467 | ||
5468 | if (gfc_option.convert != GFC_CONVERT_NATIVE) | |
5469 | { | |
db3927fb AH |
5470 | tmp = build_call_expr_loc (input_location, |
5471 | gfor_fndecl_set_convert, 1, | |
092231a8 TB |
5472 | build_int_cst (integer_type_node, |
5473 | gfc_option.convert)); | |
5474 | gfc_add_expr_to_block (&body, tmp); | |
5475 | } | |
5476 | ||
5477 | /* If this is the main program and an -frecord-marker option was provided, | |
5478 | add a call to set_record_marker. */ | |
5479 | ||
5480 | if (gfc_option.record_marker != 0) | |
5481 | { | |
db3927fb AH |
5482 | tmp = build_call_expr_loc (input_location, |
5483 | gfor_fndecl_set_record_marker, 1, | |
092231a8 TB |
5484 | build_int_cst (integer_type_node, |
5485 | gfc_option.record_marker)); | |
5486 | gfc_add_expr_to_block (&body, tmp); | |
5487 | } | |
5488 | ||
5489 | if (gfc_option.max_subrecord_length != 0) | |
5490 | { | |
db3927fb AH |
5491 | tmp = build_call_expr_loc (input_location, |
5492 | gfor_fndecl_set_max_subrecord_length, 1, | |
092231a8 TB |
5493 | build_int_cst (integer_type_node, |
5494 | gfc_option.max_subrecord_length)); | |
5495 | gfc_add_expr_to_block (&body, tmp); | |
5496 | } | |
5497 | ||
5498 | /* Call MAIN__(). */ | |
db3927fb AH |
5499 | tmp = build_call_expr_loc (input_location, |
5500 | fndecl, 0); | |
092231a8 TB |
5501 | gfc_add_expr_to_block (&body, tmp); |
5502 | ||
86c3c481 TB |
5503 | /* Mark MAIN__ as used. */ |
5504 | TREE_USED (fndecl) = 1; | |
5505 | ||
60386f50 TB |
5506 | /* Coarray: Call _gfortran_caf_finalize(void). */ |
5507 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
8b704316 | 5508 | { |
60386f50 | 5509 | /* Per F2008, 8.5.1 END of the main program implies a |
8b704316 | 5510 | SYNC MEMORY. */ |
e79983f4 | 5511 | tmp = builtin_decl_explicit (BUILT_IN_SYNC_SYNCHRONIZE); |
60386f50 TB |
5512 | tmp = build_call_expr_loc (input_location, tmp, 0); |
5513 | gfc_add_expr_to_block (&body, tmp); | |
5514 | ||
5515 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_finalize, 0); | |
5516 | gfc_add_expr_to_block (&body, tmp); | |
5517 | } | |
5518 | ||
092231a8 | 5519 | /* "return 0". */ |
bc98ed60 TB |
5520 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, integer_type_node, |
5521 | DECL_RESULT (ftn_main), | |
5522 | build_int_cst (integer_type_node, 0)); | |
092231a8 TB |
5523 | tmp = build1_v (RETURN_EXPR, tmp); |
5524 | gfc_add_expr_to_block (&body, tmp); | |
5525 | ||
5526 | ||
5527 | DECL_SAVED_TREE (ftn_main) = gfc_finish_block (&body); | |
5528 | decl = getdecls (); | |
5529 | ||
5530 | /* Finish off this function and send it for code generation. */ | |
87a60f68 | 5531 | poplevel (1, 1); |
092231a8 TB |
5532 | BLOCK_SUPERCONTEXT (DECL_INITIAL (ftn_main)) = ftn_main; |
5533 | ||
5534 | DECL_SAVED_TREE (ftn_main) | |
5535 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (ftn_main), | |
5536 | DECL_INITIAL (ftn_main)); | |
5537 | ||
5538 | /* Output the GENERIC tree. */ | |
5539 | dump_function (TDI_original, ftn_main); | |
5540 | ||
3dafb85c | 5541 | cgraph_node::finalize_function (ftn_main, true); |
86c3c481 TB |
5542 | |
5543 | if (old_context) | |
5544 | { | |
5545 | pop_function_context (); | |
5546 | saved_function_decls = saved_parent_function_decls; | |
5547 | } | |
5548 | current_function_decl = old_context; | |
092231a8 TB |
5549 | } |
5550 | ||
5551 | ||
d74d8807 DK |
5552 | /* Get the result expression for a procedure. */ |
5553 | ||
5554 | static tree | |
5555 | get_proc_result (gfc_symbol* sym) | |
5556 | { | |
5557 | if (sym->attr.subroutine || sym == sym->result) | |
5558 | { | |
5559 | if (current_fake_result_decl != NULL) | |
5560 | return TREE_VALUE (current_fake_result_decl); | |
5561 | ||
5562 | return NULL_TREE; | |
5563 | } | |
5564 | ||
5565 | return sym->result->backend_decl; | |
5566 | } | |
5567 | ||
5568 | ||
5569 | /* Generate an appropriate return-statement for a procedure. */ | |
5570 | ||
5571 | tree | |
5572 | gfc_generate_return (void) | |
5573 | { | |
5574 | gfc_symbol* sym; | |
5575 | tree result; | |
5576 | tree fndecl; | |
5577 | ||
5578 | sym = current_procedure_symbol; | |
5579 | fndecl = sym->backend_decl; | |
5580 | ||
5581 | if (TREE_TYPE (DECL_RESULT (fndecl)) == void_type_node) | |
5582 | result = NULL_TREE; | |
5583 | else | |
5584 | { | |
5585 | result = get_proc_result (sym); | |
5586 | ||
5587 | /* Set the return value to the dummy result variable. The | |
5588 | types may be different for scalar default REAL functions | |
5589 | with -ff2c, therefore we have to convert. */ | |
5590 | if (result != NULL_TREE) | |
5591 | { | |
5592 | result = convert (TREE_TYPE (DECL_RESULT (fndecl)), result); | |
bc98ed60 TB |
5593 | result = fold_build2_loc (input_location, MODIFY_EXPR, |
5594 | TREE_TYPE (result), DECL_RESULT (fndecl), | |
5595 | result); | |
d74d8807 DK |
5596 | } |
5597 | } | |
5598 | ||
5599 | return build1_v (RETURN_EXPR, result); | |
5600 | } | |
5601 | ||
5602 | ||
8b198102 FXC |
5603 | static void |
5604 | is_from_ieee_module (gfc_symbol *sym) | |
5605 | { | |
5606 | if (sym->from_intmod == INTMOD_IEEE_FEATURES | |
5607 | || sym->from_intmod == INTMOD_IEEE_EXCEPTIONS | |
5608 | || sym->from_intmod == INTMOD_IEEE_ARITHMETIC) | |
5609 | seen_ieee_symbol = 1; | |
5610 | } | |
5611 | ||
5612 | ||
5613 | static int | |
5614 | is_ieee_module_used (gfc_namespace *ns) | |
5615 | { | |
5616 | seen_ieee_symbol = 0; | |
5617 | gfc_traverse_ns (ns, is_from_ieee_module); | |
5618 | return seen_ieee_symbol; | |
5619 | } | |
5620 | ||
5621 | ||
5622 | static tree | |
5623 | save_fp_state (stmtblock_t *block) | |
5624 | { | |
5625 | tree type, fpstate, tmp; | |
5626 | ||
5627 | type = build_array_type (char_type_node, | |
5628 | build_range_type (size_type_node, size_zero_node, | |
5629 | size_int (32))); | |
5630 | fpstate = gfc_create_var (type, "fpstate"); | |
5631 | fpstate = gfc_build_addr_expr (pvoid_type_node, fpstate); | |
5632 | ||
5633 | tmp = build_call_expr_loc (input_location, gfor_fndecl_ieee_procedure_entry, | |
5634 | 1, fpstate); | |
5635 | gfc_add_expr_to_block (block, tmp); | |
5636 | ||
5637 | return fpstate; | |
5638 | } | |
5639 | ||
5640 | ||
5641 | static void | |
5642 | restore_fp_state (stmtblock_t *block, tree fpstate) | |
5643 | { | |
5644 | tree tmp; | |
5645 | ||
5646 | tmp = build_call_expr_loc (input_location, gfor_fndecl_ieee_procedure_exit, | |
5647 | 1, fpstate); | |
5648 | gfc_add_expr_to_block (block, tmp); | |
5649 | } | |
5650 | ||
5651 | ||
6de9cd9a DN |
5652 | /* Generate code for a function. */ |
5653 | ||
5654 | void | |
5655 | gfc_generate_function_code (gfc_namespace * ns) | |
5656 | { | |
5657 | tree fndecl; | |
5658 | tree old_context; | |
5659 | tree decl; | |
5660 | tree tmp; | |
8b198102 | 5661 | tree fpstate = NULL_TREE; |
d74d8807 | 5662 | stmtblock_t init, cleanup; |
6de9cd9a | 5663 | stmtblock_t body; |
d74d8807 | 5664 | gfc_wrapped_block try_block; |
702a738b | 5665 | tree recurcheckvar = NULL_TREE; |
6de9cd9a | 5666 | gfc_symbol *sym; |
d74d8807 | 5667 | gfc_symbol *previous_procedure_symbol; |
8b198102 | 5668 | int rank, ieee; |
cf7d2eb0 | 5669 | bool is_recursive; |
6de9cd9a DN |
5670 | |
5671 | sym = ns->proc_name; | |
d74d8807 DK |
5672 | previous_procedure_symbol = current_procedure_symbol; |
5673 | current_procedure_symbol = sym; | |
3d79abbd | 5674 | |
6de9cd9a | 5675 | /* Check that the frontend isn't still using this. */ |
6e45f57b | 5676 | gcc_assert (sym->tlink == NULL); |
6de9cd9a DN |
5677 | sym->tlink = sym; |
5678 | ||
5679 | /* Create the declaration for functions with global scope. */ | |
5680 | if (!sym->backend_decl) | |
fb55ca75 | 5681 | gfc_create_function_decl (ns, false); |
6de9cd9a DN |
5682 | |
5683 | fndecl = sym->backend_decl; | |
5684 | old_context = current_function_decl; | |
5685 | ||
5686 | if (old_context) | |
5687 | { | |
5688 | push_function_context (); | |
5689 | saved_parent_function_decls = saved_function_decls; | |
5690 | saved_function_decls = NULL_TREE; | |
5691 | } | |
5692 | ||
3d79abbd | 5693 | trans_function_start (sym); |
6de9cd9a | 5694 | |
d74d8807 | 5695 | gfc_init_block (&init); |
6de9cd9a | 5696 | |
d198b59a JJ |
5697 | if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER) |
5698 | { | |
5699 | /* Copy length backend_decls to all entry point result | |
5700 | symbols. */ | |
5701 | gfc_entry_list *el; | |
5702 | tree backend_decl; | |
5703 | ||
bc21d315 JW |
5704 | gfc_conv_const_charlen (ns->proc_name->ts.u.cl); |
5705 | backend_decl = ns->proc_name->result->ts.u.cl->backend_decl; | |
d198b59a | 5706 | for (el = ns->entries; el; el = el->next) |
bc21d315 | 5707 | el->sym->result->ts.u.cl->backend_decl = backend_decl; |
d198b59a JJ |
5708 | } |
5709 | ||
6de9cd9a DN |
5710 | /* Translate COMMON blocks. */ |
5711 | gfc_trans_common (ns); | |
5712 | ||
5f20c93a PT |
5713 | /* Null the parent fake result declaration if this namespace is |
5714 | a module function or an external procedures. */ | |
5715 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
5716 | || ns->parent == NULL) | |
5717 | parent_fake_result_decl = NULL_TREE; | |
5718 | ||
30aabb86 PT |
5719 | gfc_generate_contained_functions (ns); |
5720 | ||
77f2a970 JJ |
5721 | nonlocal_dummy_decls = NULL; |
5722 | nonlocal_dummy_decl_pset = NULL; | |
5723 | ||
b8ff4e88 | 5724 | has_coarray_vars = false; |
6de9cd9a | 5725 | generate_local_vars (ns); |
7389bce6 | 5726 | |
b8ff4e88 TB |
5727 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
5728 | generate_coarray_init (ns); | |
5729 | ||
5f20c93a PT |
5730 | /* Keep the parent fake result declaration in module functions |
5731 | or external procedures. */ | |
5732 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
5733 | || ns->parent == NULL) | |
5734 | current_fake_result_decl = parent_fake_result_decl; | |
5735 | else | |
5736 | current_fake_result_decl = NULL_TREE; | |
5737 | ||
d74d8807 DK |
5738 | is_recursive = sym->attr.recursive |
5739 | || (sym->attr.entry_master | |
5740 | && sym->ns->entries->sym->attr.recursive); | |
5741 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
5742 | && !is_recursive | |
5743 | && !gfc_option.flag_recursive) | |
5744 | { | |
5745 | char * msg; | |
5746 | ||
5747 | asprintf (&msg, "Recursive call to nonrecursive procedure '%s'", | |
5748 | sym->name); | |
5749 | recurcheckvar = gfc_create_var (boolean_type_node, "is_recursive"); | |
5750 | TREE_STATIC (recurcheckvar) = 1; | |
5751 | DECL_INITIAL (recurcheckvar) = boolean_false_node; | |
5752 | gfc_add_expr_to_block (&init, recurcheckvar); | |
5753 | gfc_trans_runtime_check (true, false, recurcheckvar, &init, | |
5754 | &sym->declared_at, msg); | |
5755 | gfc_add_modify (&init, recurcheckvar, boolean_true_node); | |
cede9502 | 5756 | free (msg); |
d74d8807 | 5757 | } |
6de9cd9a | 5758 | |
8b198102 FXC |
5759 | /* Check if an IEEE module is used in the procedure. If so, save |
5760 | the floating point state. */ | |
5761 | ieee = is_ieee_module_used (ns); | |
5762 | if (ieee) | |
5763 | fpstate = save_fp_state (&init); | |
5764 | ||
6de9cd9a DN |
5765 | /* Now generate the code for the body of this function. */ |
5766 | gfc_init_block (&body); | |
5767 | ||
5768 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node | |
d74d8807 | 5769 | && sym->attr.subroutine) |
6de9cd9a DN |
5770 | { |
5771 | tree alternate_return; | |
5f20c93a | 5772 | alternate_return = gfc_get_fake_result_decl (sym, 0); |
726a989a | 5773 | gfc_add_modify (&body, alternate_return, integer_zero_node); |
6de9cd9a DN |
5774 | } |
5775 | ||
3d79abbd PB |
5776 | if (ns->entries) |
5777 | { | |
5778 | /* Jump to the correct entry point. */ | |
5779 | tmp = gfc_trans_entry_master_switch (ns->entries); | |
5780 | gfc_add_expr_to_block (&body, tmp); | |
5781 | } | |
5782 | ||
cadb8f42 DK |
5783 | /* If bounds-checking is enabled, generate code to check passed in actual |
5784 | arguments against the expected dummy argument attributes (e.g. string | |
5785 | lengths). */ | |
975d3303 | 5786 | if ((gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) && !sym->attr.is_bind_c) |
cadb8f42 DK |
5787 | add_argument_checking (&body, sym); |
5788 | ||
6de9cd9a DN |
5789 | tmp = gfc_trans_code (ns->code); |
5790 | gfc_add_expr_to_block (&body, tmp); | |
5791 | ||
6de9cd9a DN |
5792 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node) |
5793 | { | |
d74d8807 | 5794 | tree result = get_proc_result (sym); |
6de9cd9a | 5795 | |
7a3eeb85 | 5796 | if (result != NULL_TREE && sym->attr.function && !sym->attr.pointer) |
5046aff5 | 5797 | { |
f18694de TB |
5798 | if (sym->attr.allocatable && sym->attr.dimension == 0 |
5799 | && sym->result == sym) | |
5800 | gfc_add_modify (&init, result, fold_convert (TREE_TYPE (result), | |
5801 | null_pointer_node)); | |
7a3eeb85 JW |
5802 | else if (sym->ts.type == BT_CLASS |
5803 | && CLASS_DATA (sym)->attr.allocatable | |
102344e2 TB |
5804 | && CLASS_DATA (sym)->attr.dimension == 0 |
5805 | && sym->result == sym) | |
7a3eeb85 JW |
5806 | { |
5807 | tmp = CLASS_DATA (sym)->backend_decl; | |
5808 | tmp = fold_build3_loc (input_location, COMPONENT_REF, | |
5809 | TREE_TYPE (tmp), result, tmp, NULL_TREE); | |
5810 | gfc_add_modify (&init, tmp, fold_convert (TREE_TYPE (tmp), | |
5811 | null_pointer_node)); | |
5812 | } | |
f18694de | 5813 | else if (sym->ts.type == BT_DERIVED |
7a3eeb85 JW |
5814 | && sym->ts.u.derived->attr.alloc_comp |
5815 | && !sym->attr.allocatable) | |
5b130807 TB |
5816 | { |
5817 | rank = sym->as ? sym->as->rank : 0; | |
d74d8807 DK |
5818 | tmp = gfc_nullify_alloc_comp (sym->ts.u.derived, result, rank); |
5819 | gfc_add_expr_to_block (&init, tmp); | |
5b130807 | 5820 | } |
958dd42b | 5821 | } |
cf7d2eb0 | 5822 | |
766d0c8c DF |
5823 | if (result == NULL_TREE) |
5824 | { | |
5825 | /* TODO: move to the appropriate place in resolve.c. */ | |
fba5ace0 | 5826 | if (warn_return_type && sym == sym->result) |
766d0c8c DF |
5827 | gfc_warning ("Return value of function '%s' at %L not set", |
5828 | sym->name, &sym->declared_at); | |
fba5ace0 TB |
5829 | if (warn_return_type) |
5830 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
766d0c8c | 5831 | } |
6de9cd9a | 5832 | else |
d74d8807 | 5833 | gfc_add_expr_to_block (&body, gfc_generate_return ()); |
6de9cd9a | 5834 | } |
d74d8807 DK |
5835 | |
5836 | gfc_init_block (&cleanup); | |
5837 | ||
5838 | /* Reset recursion-check variable. */ | |
5839 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
5840 | && !is_recursive | |
e3339d0f | 5841 | && !gfc_option.gfc_flag_openmp |
d74d8807 | 5842 | && recurcheckvar != NULL_TREE) |
cf7d2eb0 | 5843 | { |
d74d8807 DK |
5844 | gfc_add_modify (&cleanup, recurcheckvar, boolean_false_node); |
5845 | recurcheckvar = NULL; | |
cf7d2eb0 | 5846 | } |
5046aff5 | 5847 | |
8b198102 FXC |
5848 | /* If IEEE modules are loaded, restore the floating-point state. */ |
5849 | if (ieee) | |
5850 | restore_fp_state (&cleanup, fpstate); | |
5851 | ||
d74d8807 DK |
5852 | /* Finish the function body and add init and cleanup code. */ |
5853 | tmp = gfc_finish_block (&body); | |
5854 | gfc_start_wrapped_block (&try_block, tmp); | |
5855 | /* Add code to create and cleanup arrays. */ | |
5856 | gfc_trans_deferred_vars (sym, &try_block); | |
5857 | gfc_add_init_cleanup (&try_block, gfc_finish_block (&init), | |
5858 | gfc_finish_block (&cleanup)); | |
6de9cd9a DN |
5859 | |
5860 | /* Add all the decls we created during processing. */ | |
5861 | decl = saved_function_decls; | |
5862 | while (decl) | |
5863 | { | |
5864 | tree next; | |
5865 | ||
910ad8de NF |
5866 | next = DECL_CHAIN (decl); |
5867 | DECL_CHAIN (decl) = NULL_TREE; | |
755634e6 | 5868 | pushdecl (decl); |
6de9cd9a DN |
5869 | decl = next; |
5870 | } | |
5871 | saved_function_decls = NULL_TREE; | |
5872 | ||
d74d8807 | 5873 | DECL_SAVED_TREE (fndecl) = gfc_finish_wrapped_block (&try_block); |
c7c79a09 | 5874 | decl = getdecls (); |
6de9cd9a DN |
5875 | |
5876 | /* Finish off this function and send it for code generation. */ | |
87a60f68 | 5877 | poplevel (1, 1); |
6de9cd9a DN |
5878 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; |
5879 | ||
c7c79a09 JJ |
5880 | DECL_SAVED_TREE (fndecl) |
5881 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5882 | DECL_INITIAL (fndecl)); | |
5883 | ||
77f2a970 JJ |
5884 | if (nonlocal_dummy_decls) |
5885 | { | |
5886 | BLOCK_VARS (DECL_INITIAL (fndecl)) | |
5887 | = chainon (BLOCK_VARS (DECL_INITIAL (fndecl)), nonlocal_dummy_decls); | |
6e2830c3 | 5888 | delete nonlocal_dummy_decl_pset; |
77f2a970 JJ |
5889 | nonlocal_dummy_decls = NULL; |
5890 | nonlocal_dummy_decl_pset = NULL; | |
5891 | } | |
5892 | ||
6de9cd9a DN |
5893 | /* Output the GENERIC tree. */ |
5894 | dump_function (TDI_original, fndecl); | |
5895 | ||
5896 | /* Store the end of the function, so that we get good line number | |
5897 | info for the epilogue. */ | |
5898 | cfun->function_end_locus = input_location; | |
5899 | ||
5900 | /* We're leaving the context of this function, so zap cfun. | |
5901 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
5902 | tree_rest_of_compilation. */ | |
db2960f4 | 5903 | set_cfun (NULL); |
6de9cd9a DN |
5904 | |
5905 | if (old_context) | |
5906 | { | |
5907 | pop_function_context (); | |
5908 | saved_function_decls = saved_parent_function_decls; | |
5909 | } | |
5910 | current_function_decl = old_context; | |
5911 | ||
15682f24 MJ |
5912 | if (decl_function_context (fndecl)) |
5913 | { | |
5914 | /* Register this function with cgraph just far enough to get it | |
5915 | added to our parent's nested function list. | |
5916 | If there are static coarrays in this function, the nested _caf_init | |
5917 | function has already called cgraph_create_node, which also created | |
5918 | the cgraph node for this function. */ | |
5919 | if (!has_coarray_vars || gfc_option.coarray != GFC_FCOARRAY_LIB) | |
d52f5295 | 5920 | (void) cgraph_node::create (fndecl); |
15682f24 | 5921 | } |
6de9cd9a | 5922 | else |
3dafb85c | 5923 | cgraph_node::finalize_function (fndecl, true); |
a64f5186 JJ |
5924 | |
5925 | gfc_trans_use_stmts (ns); | |
bd11e37d | 5926 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
092231a8 TB |
5927 | |
5928 | if (sym->attr.is_main_program) | |
5929 | create_main_function (fndecl); | |
d74d8807 DK |
5930 | |
5931 | current_procedure_symbol = previous_procedure_symbol; | |
6de9cd9a DN |
5932 | } |
5933 | ||
092231a8 | 5934 | |
6de9cd9a DN |
5935 | void |
5936 | gfc_generate_constructors (void) | |
5937 | { | |
6e45f57b | 5938 | gcc_assert (gfc_static_ctors == NULL_TREE); |
6de9cd9a DN |
5939 | #if 0 |
5940 | tree fnname; | |
5941 | tree type; | |
5942 | tree fndecl; | |
5943 | tree decl; | |
5944 | tree tmp; | |
5945 | ||
5946 | if (gfc_static_ctors == NULL_TREE) | |
5947 | return; | |
5948 | ||
5880f14f | 5949 | fnname = get_file_function_name ("I"); |
b64fca63 | 5950 | type = build_function_type_list (void_type_node, NULL_TREE); |
6de9cd9a | 5951 | |
c2255bc4 AH |
5952 | fndecl = build_decl (input_location, |
5953 | FUNCTION_DECL, fnname, type); | |
6de9cd9a DN |
5954 | TREE_PUBLIC (fndecl) = 1; |
5955 | ||
c2255bc4 AH |
5956 | decl = build_decl (input_location, |
5957 | RESULT_DECL, NULL_TREE, void_type_node); | |
b785f485 RH |
5958 | DECL_ARTIFICIAL (decl) = 1; |
5959 | DECL_IGNORED_P (decl) = 1; | |
6de9cd9a DN |
5960 | DECL_CONTEXT (decl) = fndecl; |
5961 | DECL_RESULT (fndecl) = decl; | |
5962 | ||
5963 | pushdecl (fndecl); | |
5964 | ||
5965 | current_function_decl = fndecl; | |
5966 | ||
0e6df31e | 5967 | rest_of_decl_compilation (fndecl, 1, 0); |
6de9cd9a | 5968 | |
0e6df31e | 5969 | make_decl_rtl (fndecl); |
6de9cd9a | 5970 | |
b6b27e98 | 5971 | allocate_struct_function (fndecl, false); |
6de9cd9a | 5972 | |
87a60f68 | 5973 | pushlevel (); |
6de9cd9a DN |
5974 | |
5975 | for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors)) | |
5976 | { | |
db3927fb AH |
5977 | tmp = build_call_expr_loc (input_location, |
5978 | TREE_VALUE (gfc_static_ctors), 0); | |
c2255bc4 | 5979 | DECL_SAVED_TREE (fndecl) = build_stmt (input_location, EXPR_STMT, tmp); |
6de9cd9a DN |
5980 | } |
5981 | ||
c7c79a09 | 5982 | decl = getdecls (); |
87a60f68 | 5983 | poplevel (1, 1); |
6de9cd9a DN |
5984 | |
5985 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
c7c79a09 JJ |
5986 | DECL_SAVED_TREE (fndecl) |
5987 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5988 | DECL_INITIAL (fndecl)); | |
6de9cd9a DN |
5989 | |
5990 | free_after_parsing (cfun); | |
5991 | free_after_compilation (cfun); | |
5992 | ||
0f0377f6 | 5993 | tree_rest_of_compilation (fndecl); |
6de9cd9a DN |
5994 | |
5995 | current_function_decl = NULL_TREE; | |
5996 | #endif | |
5997 | } | |
5998 | ||
0de4325e TS |
5999 | /* Translates a BLOCK DATA program unit. This means emitting the |
6000 | commons contained therein plus their initializations. We also emit | |
6001 | a globally visible symbol to make sure that each BLOCK DATA program | |
6002 | unit remains unique. */ | |
6003 | ||
6004 | void | |
6005 | gfc_generate_block_data (gfc_namespace * ns) | |
6006 | { | |
6007 | tree decl; | |
6008 | tree id; | |
6009 | ||
c8cc8542 PB |
6010 | /* Tell the backend the source location of the block data. */ |
6011 | if (ns->proc_name) | |
6012 | gfc_set_backend_locus (&ns->proc_name->declared_at); | |
6013 | else | |
6014 | gfc_set_backend_locus (&gfc_current_locus); | |
6015 | ||
6016 | /* Process the DATA statements. */ | |
0de4325e TS |
6017 | gfc_trans_common (ns); |
6018 | ||
c8cc8542 PB |
6019 | /* Create a global symbol with the mane of the block data. This is to |
6020 | generate linker errors if the same name is used twice. It is never | |
6021 | really used. */ | |
0de4325e TS |
6022 | if (ns->proc_name) |
6023 | id = gfc_sym_mangled_function_id (ns->proc_name); | |
6024 | else | |
6025 | id = get_identifier ("__BLOCK_DATA__"); | |
6026 | ||
c2255bc4 AH |
6027 | decl = build_decl (input_location, |
6028 | VAR_DECL, id, gfc_array_index_type); | |
0de4325e TS |
6029 | TREE_PUBLIC (decl) = 1; |
6030 | TREE_STATIC (decl) = 1; | |
a64f5186 | 6031 | DECL_IGNORED_P (decl) = 1; |
0de4325e TS |
6032 | |
6033 | pushdecl (decl); | |
6034 | rest_of_decl_compilation (decl, 1, 0); | |
6035 | } | |
6036 | ||
83d890b9 | 6037 | |
9abe5e56 DK |
6038 | /* Process the local variables of a BLOCK construct. */ |
6039 | ||
6040 | void | |
6312ef45 | 6041 | gfc_process_block_locals (gfc_namespace* ns) |
9abe5e56 DK |
6042 | { |
6043 | tree decl; | |
6044 | ||
6045 | gcc_assert (saved_local_decls == NULL_TREE); | |
b8ff4e88 TB |
6046 | has_coarray_vars = false; |
6047 | ||
9abe5e56 DK |
6048 | generate_local_vars (ns); |
6049 | ||
b8ff4e88 TB |
6050 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
6051 | generate_coarray_init (ns); | |
6052 | ||
9abe5e56 DK |
6053 | decl = saved_local_decls; |
6054 | while (decl) | |
6055 | { | |
6056 | tree next; | |
6057 | ||
910ad8de NF |
6058 | next = DECL_CHAIN (decl); |
6059 | DECL_CHAIN (decl) = NULL_TREE; | |
9abe5e56 DK |
6060 | pushdecl (decl); |
6061 | decl = next; | |
6062 | } | |
6063 | saved_local_decls = NULL_TREE; | |
6064 | } | |
6065 | ||
6066 | ||
6de9cd9a | 6067 | #include "gt-fortran-trans-decl.h" |