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4ee9c684 | 1 | /* Backend function setup |
3aea1f79 | 2 | Copyright (C) 2002-2014 Free Software Foundation, Inc. |
4ee9c684 | 3 | Contributed by Paul Brook |
4 | ||
c84b470d | 5 | This file is part of GCC. |
4ee9c684 | 6 | |
c84b470d | 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 | |
bdabe786 | 9 | Software Foundation; either version 3, or (at your option) any later |
c84b470d | 10 | version. |
4ee9c684 | 11 | |
c84b470d | 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. | |
4ee9c684 | 16 | |
17 | You should have received a copy of the GNU General Public License | |
bdabe786 | 18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
4ee9c684 | 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" | |
cb4070e0 | 26 | #include "tm.h" |
dc8078a3 | 27 | #include "gfortran.h" |
4ee9c684 | 28 | #include "tree.h" |
9ed99284 | 29 | #include "stringpool.h" |
30 | #include "stor-layout.h" | |
31 | #include "varasm.h" | |
32 | #include "attribs.h" | |
4ee9c684 | 33 | #include "tree-dump.h" |
a8783bee | 34 | #include "gimple-expr.h" /* For create_tmp_var_raw. */ |
4ee9c684 | 35 | #include "ggc.h" |
7cbc820e | 36 | #include "diagnostic-core.h" /* For internal_error. */ |
37 | #include "toplev.h" /* For announce_function. */ | |
4ee9c684 | 38 | #include "target.h" |
a3020f2f | 39 | #include "hashtab.h" |
40 | #include "hash-set.h" | |
41 | #include "vec.h" | |
42 | #include "machmode.h" | |
43 | #include "hard-reg-set.h" | |
44 | #include "input.h" | |
4ee9c684 | 45 | #include "function.h" |
4ee9c684 | 46 | #include "flags.h" |
1140c305 | 47 | #include "hash-map.h" |
48 | #include "is-a.h" | |
49 | #include "plugin-api.h" | |
50 | #include "ipa-ref.h" | |
4ee9c684 | 51 | #include "cgraph.h" |
df4d540f | 52 | #include "debug.h" |
126387b5 | 53 | #include "constructor.h" |
4ee9c684 | 54 | #include "trans.h" |
55 | #include "trans-types.h" | |
56 | #include "trans-array.h" | |
57 | #include "trans-const.h" | |
58 | /* Only for gfc_trans_code. Shouldn't need to include this. */ | |
59 | #include "trans-stmt.h" | |
60 | ||
61 | #define MAX_LABEL_VALUE 99999 | |
62 | ||
63 | ||
64 | /* Holds the result of the function if no result variable specified. */ | |
65 | ||
66 | static GTY(()) tree current_fake_result_decl; | |
c750cc52 | 67 | static GTY(()) tree parent_fake_result_decl; |
4ee9c684 | 68 | |
4ee9c684 | 69 | |
70 | /* Holds the variable DECLs for the current function. */ | |
71 | ||
d4163395 | 72 | static GTY(()) tree saved_function_decls; |
73 | static GTY(()) tree saved_parent_function_decls; | |
4ee9c684 | 74 | |
431205b7 | 75 | static hash_set<tree> *nonlocal_dummy_decl_pset; |
9579733e | 76 | static GTY(()) tree nonlocal_dummy_decls; |
4ee9c684 | 77 | |
6a7084d7 | 78 | /* Holds the variable DECLs that are locals. */ |
79 | ||
80 | static GTY(()) tree saved_local_decls; | |
81 | ||
4ee9c684 | 82 | /* The namespace of the module we're currently generating. Only used while |
83 | outputting decls for module variables. Do not rely on this being set. */ | |
84 | ||
85 | static gfc_namespace *module_namespace; | |
86 | ||
89ac8ba1 | 87 | /* The currently processed procedure symbol. */ |
88 | static gfc_symbol* current_procedure_symbol = NULL; | |
89 | ||
4ee9c684 | 90 | |
a961ca30 | 91 | /* With -fcoarray=lib: For generating the registering call |
92 | of static coarrays. */ | |
93 | static bool has_coarray_vars; | |
94 | static stmtblock_t caf_init_block; | |
95 | ||
96 | ||
4ee9c684 | 97 | /* List of static constructor functions. */ |
98 | ||
99 | tree gfc_static_ctors; | |
100 | ||
101 | ||
d566c3e0 | 102 | /* Whether we've seen a symbol from an IEEE module in the namespace. */ |
103 | static int seen_ieee_symbol; | |
104 | ||
4ee9c684 | 105 | /* Function declarations for builtin library functions. */ |
106 | ||
4ee9c684 | 107 | tree gfor_fndecl_pause_numeric; |
108 | tree gfor_fndecl_pause_string; | |
109 | tree gfor_fndecl_stop_numeric; | |
dff2ea5f | 110 | tree gfor_fndecl_stop_numeric_f08; |
4ee9c684 | 111 | tree gfor_fndecl_stop_string; |
070cc790 | 112 | tree gfor_fndecl_error_stop_numeric; |
c6cd3066 | 113 | tree gfor_fndecl_error_stop_string; |
4ee9c684 | 114 | tree gfor_fndecl_runtime_error; |
50ad5fa2 | 115 | tree gfor_fndecl_runtime_error_at; |
da6ffc6d | 116 | tree gfor_fndecl_runtime_warning_at; |
9915365e | 117 | tree gfor_fndecl_os_error; |
50ad5fa2 | 118 | tree gfor_fndecl_generate_error; |
7257a5d2 | 119 | tree gfor_fndecl_set_args; |
8c84a5de | 120 | tree gfor_fndecl_set_fpe; |
56c7c2d7 | 121 | tree gfor_fndecl_set_options; |
15774a8b | 122 | tree gfor_fndecl_set_convert; |
f23886ab | 123 | tree gfor_fndecl_set_record_marker; |
bbaaa7b1 | 124 | tree gfor_fndecl_set_max_subrecord_length; |
b902b078 | 125 | tree gfor_fndecl_ctime; |
126 | tree gfor_fndecl_fdate; | |
dbc97b88 | 127 | tree gfor_fndecl_ttynam; |
4ee9c684 | 128 | tree gfor_fndecl_in_pack; |
129 | tree gfor_fndecl_in_unpack; | |
130 | tree gfor_fndecl_associated; | |
72ce5390 | 131 | tree gfor_fndecl_system_clock4; |
132 | tree gfor_fndecl_system_clock8; | |
d566c3e0 | 133 | tree gfor_fndecl_ieee_procedure_entry; |
134 | tree gfor_fndecl_ieee_procedure_exit; | |
4ee9c684 | 135 | |
136 | ||
70b5944a | 137 | /* Coarray run-time library function decls. */ |
138 | tree gfor_fndecl_caf_init; | |
139 | tree gfor_fndecl_caf_finalize; | |
d44f2f7c | 140 | tree gfor_fndecl_caf_this_image; |
141 | tree gfor_fndecl_caf_num_images; | |
a961ca30 | 142 | tree gfor_fndecl_caf_register; |
d0d776fb | 143 | tree gfor_fndecl_caf_deregister; |
5f4a118e | 144 | tree gfor_fndecl_caf_get; |
145 | tree gfor_fndecl_caf_send; | |
146 | tree gfor_fndecl_caf_sendget; | |
70b5944a | 147 | tree gfor_fndecl_caf_sync_all; |
148 | tree gfor_fndecl_caf_sync_images; | |
149 | tree gfor_fndecl_caf_error_stop; | |
150 | tree gfor_fndecl_caf_error_stop_str; | |
97b9ac34 | 151 | tree gfor_fndecl_caf_atomic_def; |
152 | tree gfor_fndecl_caf_atomic_ref; | |
153 | tree gfor_fndecl_caf_atomic_cas; | |
154 | tree gfor_fndecl_caf_atomic_op; | |
498b946e | 155 | tree gfor_fndecl_caf_lock; |
156 | tree gfor_fndecl_caf_unlock; | |
52306a18 | 157 | tree gfor_fndecl_co_broadcast; |
79ed4a8e | 158 | tree gfor_fndecl_co_max; |
159 | tree gfor_fndecl_co_min; | |
e39efcef | 160 | tree gfor_fndecl_co_reduce; |
79ed4a8e | 161 | tree gfor_fndecl_co_sum; |
70b5944a | 162 | |
70b5944a | 163 | |
4ee9c684 | 164 | /* Math functions. Many other math functions are handled in |
165 | trans-intrinsic.c. */ | |
166 | ||
920e54ef | 167 | gfc_powdecl_list gfor_fndecl_math_powi[4][3]; |
4ee9c684 | 168 | tree gfor_fndecl_math_ishftc4; |
169 | tree gfor_fndecl_math_ishftc8; | |
920e54ef | 170 | tree gfor_fndecl_math_ishftc16; |
4ee9c684 | 171 | |
172 | ||
173 | /* String functions. */ | |
174 | ||
4ee9c684 | 175 | tree gfor_fndecl_compare_string; |
176 | tree gfor_fndecl_concat_string; | |
177 | tree gfor_fndecl_string_len_trim; | |
178 | tree gfor_fndecl_string_index; | |
179 | tree gfor_fndecl_string_scan; | |
180 | tree gfor_fndecl_string_verify; | |
181 | tree gfor_fndecl_string_trim; | |
5fcc6ec2 | 182 | tree gfor_fndecl_string_minmax; |
4ee9c684 | 183 | tree gfor_fndecl_adjustl; |
184 | tree gfor_fndecl_adjustr; | |
b44437b9 | 185 | tree gfor_fndecl_select_string; |
40b806de | 186 | tree gfor_fndecl_compare_string_char4; |
187 | tree gfor_fndecl_concat_string_char4; | |
188 | tree gfor_fndecl_string_len_trim_char4; | |
189 | tree gfor_fndecl_string_index_char4; | |
190 | tree gfor_fndecl_string_scan_char4; | |
191 | tree gfor_fndecl_string_verify_char4; | |
192 | tree gfor_fndecl_string_trim_char4; | |
193 | tree gfor_fndecl_string_minmax_char4; | |
194 | tree gfor_fndecl_adjustl_char4; | |
195 | tree gfor_fndecl_adjustr_char4; | |
b44437b9 | 196 | tree gfor_fndecl_select_string_char4; |
197 | ||
198 | ||
199 | /* Conversion between character kinds. */ | |
200 | tree gfor_fndecl_convert_char1_to_char4; | |
201 | tree gfor_fndecl_convert_char4_to_char1; | |
4ee9c684 | 202 | |
203 | ||
204 | /* Other misc. runtime library functions. */ | |
4ee9c684 | 205 | tree gfor_fndecl_size0; |
206 | tree gfor_fndecl_size1; | |
9b057c29 | 207 | tree gfor_fndecl_iargc; |
4ee9c684 | 208 | |
59e2a584 | 209 | /* Intrinsic functions implemented in Fortran. */ |
210 | tree gfor_fndecl_sc_kind; | |
4ee9c684 | 211 | tree gfor_fndecl_si_kind; |
212 | tree gfor_fndecl_sr_kind; | |
213 | ||
4e8e57b0 | 214 | /* BLAS gemm functions. */ |
215 | tree gfor_fndecl_sgemm; | |
216 | tree gfor_fndecl_dgemm; | |
217 | tree gfor_fndecl_cgemm; | |
218 | tree gfor_fndecl_zgemm; | |
219 | ||
4ee9c684 | 220 | |
221 | static void | |
222 | gfc_add_decl_to_parent_function (tree decl) | |
223 | { | |
22d678e8 | 224 | gcc_assert (decl); |
4ee9c684 | 225 | DECL_CONTEXT (decl) = DECL_CONTEXT (current_function_decl); |
226 | DECL_NONLOCAL (decl) = 1; | |
1767a056 | 227 | DECL_CHAIN (decl) = saved_parent_function_decls; |
4ee9c684 | 228 | saved_parent_function_decls = decl; |
229 | } | |
230 | ||
231 | void | |
232 | gfc_add_decl_to_function (tree decl) | |
233 | { | |
22d678e8 | 234 | gcc_assert (decl); |
4ee9c684 | 235 | TREE_USED (decl) = 1; |
236 | DECL_CONTEXT (decl) = current_function_decl; | |
1767a056 | 237 | DECL_CHAIN (decl) = saved_function_decls; |
4ee9c684 | 238 | saved_function_decls = decl; |
239 | } | |
240 | ||
6a7084d7 | 241 | static void |
242 | add_decl_as_local (tree decl) | |
243 | { | |
244 | gcc_assert (decl); | |
245 | TREE_USED (decl) = 1; | |
246 | DECL_CONTEXT (decl) = current_function_decl; | |
1767a056 | 247 | DECL_CHAIN (decl) = saved_local_decls; |
6a7084d7 | 248 | saved_local_decls = decl; |
249 | } | |
250 | ||
4ee9c684 | 251 | |
b797d6d3 | 252 | /* Build a backend label declaration. Set TREE_USED for named labels. |
253 | The context of the label is always the current_function_decl. All | |
254 | labels are marked artificial. */ | |
4ee9c684 | 255 | |
256 | tree | |
257 | gfc_build_label_decl (tree label_id) | |
258 | { | |
259 | /* 2^32 temporaries should be enough. */ | |
260 | static unsigned int tmp_num = 1; | |
261 | tree label_decl; | |
262 | char *label_name; | |
263 | ||
264 | if (label_id == NULL_TREE) | |
265 | { | |
266 | /* Build an internal label name. */ | |
267 | ASM_FORMAT_PRIVATE_NAME (label_name, "L", tmp_num++); | |
268 | label_id = get_identifier (label_name); | |
269 | } | |
270 | else | |
271 | label_name = NULL; | |
272 | ||
273 | /* Build the LABEL_DECL node. Labels have no type. */ | |
e60a6f7b | 274 | label_decl = build_decl (input_location, |
275 | LABEL_DECL, label_id, void_type_node); | |
4ee9c684 | 276 | DECL_CONTEXT (label_decl) = current_function_decl; |
277 | DECL_MODE (label_decl) = VOIDmode; | |
278 | ||
b797d6d3 | 279 | /* We always define the label as used, even if the original source |
280 | file never references the label. We don't want all kinds of | |
281 | spurious warnings for old-style Fortran code with too many | |
282 | labels. */ | |
283 | TREE_USED (label_decl) = 1; | |
4ee9c684 | 284 | |
b797d6d3 | 285 | DECL_ARTIFICIAL (label_decl) = 1; |
4ee9c684 | 286 | return label_decl; |
287 | } | |
288 | ||
289 | ||
b31f705b | 290 | /* Set the backend source location of a decl. */ |
291 | ||
292 | void | |
293 | gfc_set_decl_location (tree decl, locus * loc) | |
294 | { | |
b31f705b | 295 | DECL_SOURCE_LOCATION (decl) = loc->lb->location; |
b31f705b | 296 | } |
297 | ||
298 | ||
4ee9c684 | 299 | /* Return the backend label declaration for a given label structure, |
300 | or create it if it doesn't exist yet. */ | |
301 | ||
302 | tree | |
303 | gfc_get_label_decl (gfc_st_label * lp) | |
304 | { | |
4ee9c684 | 305 | if (lp->backend_decl) |
306 | return lp->backend_decl; | |
307 | else | |
308 | { | |
309 | char label_name[GFC_MAX_SYMBOL_LEN + 1]; | |
310 | tree label_decl; | |
311 | ||
312 | /* Validate the label declaration from the front end. */ | |
22d678e8 | 313 | gcc_assert (lp != NULL && lp->value <= MAX_LABEL_VALUE); |
4ee9c684 | 314 | |
315 | /* Build a mangled name for the label. */ | |
316 | sprintf (label_name, "__label_%.6d", lp->value); | |
317 | ||
318 | /* Build the LABEL_DECL node. */ | |
319 | label_decl = gfc_build_label_decl (get_identifier (label_name)); | |
320 | ||
321 | /* Tell the debugger where the label came from. */ | |
f888a3fb | 322 | if (lp->value <= MAX_LABEL_VALUE) /* An internal label. */ |
b31f705b | 323 | gfc_set_decl_location (label_decl, &lp->where); |
4ee9c684 | 324 | else |
325 | DECL_ARTIFICIAL (label_decl) = 1; | |
326 | ||
327 | /* Store the label in the label list and return the LABEL_DECL. */ | |
328 | lp->backend_decl = label_decl; | |
329 | return label_decl; | |
330 | } | |
331 | } | |
332 | ||
333 | ||
334 | /* Convert a gfc_symbol to an identifier of the same name. */ | |
335 | ||
336 | static tree | |
337 | gfc_sym_identifier (gfc_symbol * sym) | |
338 | { | |
0509d0ee | 339 | if (sym->attr.is_main_program && strcmp (sym->name, "main") == 0) |
340 | return (get_identifier ("MAIN__")); | |
341 | else | |
342 | return (get_identifier (sym->name)); | |
4ee9c684 | 343 | } |
344 | ||
345 | ||
346 | /* Construct mangled name from symbol name. */ | |
347 | ||
348 | static tree | |
349 | gfc_sym_mangled_identifier (gfc_symbol * sym) | |
350 | { | |
351 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
352 | ||
c5d33754 | 353 | /* Prevent the mangling of identifiers that have an assigned |
354 | binding label (mainly those that are bind(c)). */ | |
7b2060ba | 355 | if (sym->attr.is_bind_c == 1 && sym->binding_label) |
356 | return get_identifier (sym->binding_label); | |
a90fe829 | 357 | |
4f0fae8e | 358 | if (sym->module == NULL) |
4ee9c684 | 359 | return gfc_sym_identifier (sym); |
360 | else | |
361 | { | |
f08a3f6f | 362 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
4ee9c684 | 363 | return get_identifier (name); |
364 | } | |
365 | } | |
366 | ||
367 | ||
368 | /* Construct mangled function name from symbol name. */ | |
369 | ||
370 | static tree | |
371 | gfc_sym_mangled_function_id (gfc_symbol * sym) | |
372 | { | |
373 | int has_underscore; | |
374 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
375 | ||
c5d33754 | 376 | /* It may be possible to simply use the binding label if it's |
377 | provided, and remove the other checks. Then we could use it | |
378 | for other things if we wished. */ | |
379 | if ((sym->attr.is_bind_c == 1 || sym->attr.is_iso_c == 1) && | |
7b2060ba | 380 | sym->binding_label) |
c5d33754 | 381 | /* use the binding label rather than the mangled name */ |
382 | return get_identifier (sym->binding_label); | |
383 | ||
4f0fae8e | 384 | if (sym->module == NULL || sym->attr.proc == PROC_EXTERNAL |
12441a18 | 385 | || (sym->module != NULL && (sym->attr.external |
386 | || sym->attr.if_source == IFSRC_IFBODY))) | |
4ee9c684 | 387 | { |
a2f97da7 | 388 | /* Main program is mangled into MAIN__. */ |
389 | if (sym->attr.is_main_program) | |
390 | return get_identifier ("MAIN__"); | |
391 | ||
392 | /* Intrinsic procedures are never mangled. */ | |
393 | if (sym->attr.proc == PROC_INTRINSIC) | |
4ee9c684 | 394 | return get_identifier (sym->name); |
395 | ||
396 | if (gfc_option.flag_underscoring) | |
397 | { | |
398 | has_underscore = strchr (sym->name, '_') != 0; | |
399 | if (gfc_option.flag_second_underscore && has_underscore) | |
400 | snprintf (name, sizeof name, "%s__", sym->name); | |
401 | else | |
402 | snprintf (name, sizeof name, "%s_", sym->name); | |
403 | return get_identifier (name); | |
404 | } | |
405 | else | |
406 | return get_identifier (sym->name); | |
407 | } | |
408 | else | |
409 | { | |
f08a3f6f | 410 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
4ee9c684 | 411 | return get_identifier (name); |
412 | } | |
413 | } | |
414 | ||
415 | ||
1236e28b | 416 | void |
417 | gfc_set_decl_assembler_name (tree decl, tree name) | |
418 | { | |
419 | tree target_mangled = targetm.mangle_decl_assembler_name (decl, name); | |
420 | SET_DECL_ASSEMBLER_NAME (decl, target_mangled); | |
421 | } | |
422 | ||
423 | ||
5ed82495 | 424 | /* Returns true if a variable of specified size should go on the stack. */ |
425 | ||
426 | int | |
427 | gfc_can_put_var_on_stack (tree size) | |
428 | { | |
429 | unsigned HOST_WIDE_INT low; | |
430 | ||
431 | if (!INTEGER_CST_P (size)) | |
432 | return 0; | |
433 | ||
434 | if (gfc_option.flag_max_stack_var_size < 0) | |
435 | return 1; | |
436 | ||
e1d65c9f | 437 | if (!tree_fits_uhwi_p (size)) |
5ed82495 | 438 | return 0; |
439 | ||
f9ae6f95 | 440 | low = TREE_INT_CST_LOW (size); |
5ed82495 | 441 | if (low > (unsigned HOST_WIDE_INT) gfc_option.flag_max_stack_var_size) |
442 | return 0; | |
443 | ||
444 | /* TODO: Set a per-function stack size limit. */ | |
445 | ||
446 | return 1; | |
447 | } | |
448 | ||
449 | ||
b7bf3f81 | 450 | /* gfc_finish_cray_pointee sets DECL_VALUE_EXPR for a Cray pointee to |
451 | an expression involving its corresponding pointer. There are | |
452 | 2 cases; one for variable size arrays, and one for everything else, | |
453 | because variable-sized arrays require one fewer level of | |
454 | indirection. */ | |
455 | ||
456 | static void | |
457 | gfc_finish_cray_pointee (tree decl, gfc_symbol *sym) | |
458 | { | |
459 | tree ptr_decl = gfc_get_symbol_decl (sym->cp_pointer); | |
460 | tree value; | |
461 | ||
462 | /* Parameters need to be dereferenced. */ | |
a90fe829 | 463 | if (sym->cp_pointer->attr.dummy) |
389dd41b | 464 | ptr_decl = build_fold_indirect_ref_loc (input_location, |
465 | ptr_decl); | |
b7bf3f81 | 466 | |
467 | /* Check to see if we're dealing with a variable-sized array. */ | |
468 | if (sym->attr.dimension | |
a90fe829 | 469 | && TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE) |
470 | { | |
942043f8 | 471 | /* These decls will be dereferenced later, so we don't dereference |
b7bf3f81 | 472 | them here. */ |
473 | value = convert (TREE_TYPE (decl), ptr_decl); | |
474 | } | |
475 | else | |
476 | { | |
477 | ptr_decl = convert (build_pointer_type (TREE_TYPE (decl)), | |
478 | ptr_decl); | |
389dd41b | 479 | value = build_fold_indirect_ref_loc (input_location, |
480 | ptr_decl); | |
b7bf3f81 | 481 | } |
482 | ||
483 | SET_DECL_VALUE_EXPR (decl, value); | |
484 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
764f1175 | 485 | GFC_DECL_CRAY_POINTEE (decl) = 1; |
b7bf3f81 | 486 | } |
487 | ||
488 | ||
b9c7fce7 | 489 | /* Finish processing of a declaration without an initial value. */ |
4ee9c684 | 490 | |
491 | static void | |
b9c7fce7 | 492 | gfc_finish_decl (tree decl) |
4ee9c684 | 493 | { |
b9c7fce7 | 494 | gcc_assert (TREE_CODE (decl) == PARM_DECL |
495 | || DECL_INITIAL (decl) == NULL_TREE); | |
4ee9c684 | 496 | |
b9c7fce7 | 497 | if (TREE_CODE (decl) != VAR_DECL) |
498 | return; | |
4ee9c684 | 499 | |
b9c7fce7 | 500 | if (DECL_SIZE (decl) == NULL_TREE |
501 | && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE) | |
502 | layout_decl (decl, 0); | |
503 | ||
504 | /* A few consistency checks. */ | |
505 | /* A static variable with an incomplete type is an error if it is | |
506 | initialized. Also if it is not file scope. Otherwise, let it | |
507 | through, but if it is not `extern' then it may cause an error | |
508 | message later. */ | |
509 | /* An automatic variable with an incomplete type is an error. */ | |
510 | ||
511 | /* We should know the storage size. */ | |
512 | gcc_assert (DECL_SIZE (decl) != NULL_TREE | |
a90fe829 | 513 | || (TREE_STATIC (decl) |
b9c7fce7 | 514 | ? (!DECL_INITIAL (decl) || !DECL_CONTEXT (decl)) |
515 | : DECL_EXTERNAL (decl))); | |
516 | ||
517 | /* The storage size should be constant. */ | |
518 | gcc_assert ((!DECL_EXTERNAL (decl) && !TREE_STATIC (decl)) | |
519 | || !DECL_SIZE (decl) | |
520 | || TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST); | |
4ee9c684 | 521 | } |
522 | ||
523 | ||
cf5f881f | 524 | /* Handle setting of GFC_DECL_SCALAR* on DECL. */ |
525 | ||
526 | void | |
527 | gfc_finish_decl_attrs (tree decl, symbol_attribute *attr) | |
528 | { | |
529 | if (!attr->dimension && !attr->codimension) | |
530 | { | |
531 | /* Handle scalar allocatable variables. */ | |
532 | if (attr->allocatable) | |
533 | { | |
534 | gfc_allocate_lang_decl (decl); | |
535 | GFC_DECL_SCALAR_ALLOCATABLE (decl) = 1; | |
536 | } | |
537 | /* Handle scalar pointer variables. */ | |
538 | if (attr->pointer) | |
539 | { | |
540 | gfc_allocate_lang_decl (decl); | |
541 | GFC_DECL_SCALAR_POINTER (decl) = 1; | |
542 | } | |
543 | } | |
544 | } | |
545 | ||
546 | ||
4ee9c684 | 547 | /* Apply symbol attributes to a variable, and add it to the function scope. */ |
548 | ||
549 | static void | |
550 | gfc_finish_var_decl (tree decl, gfc_symbol * sym) | |
551 | { | |
c1977dbe | 552 | tree new_type; |
f888a3fb | 553 | /* TREE_ADDRESSABLE means the address of this variable is actually needed. |
4ee9c684 | 554 | This is the equivalent of the TARGET variables. |
555 | We also need to set this if the variable is passed by reference in a | |
556 | CALL statement. */ | |
b549d2a5 | 557 | |
b7bf3f81 | 558 | /* Set DECL_VALUE_EXPR for Cray Pointees. */ |
b549d2a5 | 559 | if (sym->attr.cray_pointee) |
b7bf3f81 | 560 | gfc_finish_cray_pointee (decl, sym); |
b549d2a5 | 561 | |
4ee9c684 | 562 | if (sym->attr.target) |
563 | TREE_ADDRESSABLE (decl) = 1; | |
564 | /* If it wasn't used we wouldn't be getting it. */ | |
565 | TREE_USED (decl) = 1; | |
566 | ||
7415cfe4 | 567 | if (sym->attr.flavor == FL_PARAMETER |
568 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) | |
569 | TREE_READONLY (decl) = 1; | |
570 | ||
4ee9c684 | 571 | /* Chain this decl to the pending declarations. Don't do pushdecl() |
572 | because this would add them to the current scope rather than the | |
573 | function scope. */ | |
574 | if (current_function_decl != NULL_TREE) | |
575 | { | |
7af6a4af | 576 | if (sym->ns->proc_name->backend_decl == current_function_decl |
6a7084d7 | 577 | || sym->result == sym) |
4ee9c684 | 578 | gfc_add_decl_to_function (decl); |
6a7084d7 | 579 | else if (sym->ns->proc_name->attr.flavor == FL_LABEL) |
580 | /* This is a BLOCK construct. */ | |
581 | add_decl_as_local (decl); | |
4ee9c684 | 582 | else |
583 | gfc_add_decl_to_parent_function (decl); | |
584 | } | |
585 | ||
b7bf3f81 | 586 | if (sym->attr.cray_pointee) |
587 | return; | |
588 | ||
c5cb468c | 589 | if(sym->attr.is_bind_c == 1 && sym->binding_label) |
c5d33754 | 590 | { |
591 | /* We need to put variables that are bind(c) into the common | |
592 | segment of the object file, because this is what C would do. | |
593 | gfortran would typically put them in either the BSS or | |
594 | initialized data segments, and only mark them as common if | |
595 | they were part of common blocks. However, if they are not put | |
ea657963 | 596 | into common space, then C cannot initialize global Fortran |
c5d33754 | 597 | variables that it interoperates with and the draft says that |
598 | either Fortran or C should be able to initialize it (but not | |
599 | both, of course.) (J3/04-007, section 15.3). */ | |
600 | TREE_PUBLIC(decl) = 1; | |
601 | DECL_COMMON(decl) = 1; | |
602 | } | |
a90fe829 | 603 | |
4ee9c684 | 604 | /* If a variable is USE associated, it's always external. */ |
605 | if (sym->attr.use_assoc) | |
606 | { | |
607 | DECL_EXTERNAL (decl) = 1; | |
608 | TREE_PUBLIC (decl) = 1; | |
609 | } | |
4f0fae8e | 610 | else if (sym->module && !sym->attr.result && !sym->attr.dummy) |
4ee9c684 | 611 | { |
6b20224d | 612 | /* TODO: Don't set sym->module for result or dummy variables. */ |
7af6a4af | 613 | gcc_assert (current_function_decl == NULL_TREE || sym->result == sym); |
7d6b5754 | 614 | |
87d9f569 | 615 | if (sym->attr.access != ACCESS_PRIVATE || sym->attr.public_used) |
c5cb468c | 616 | TREE_PUBLIC (decl) = 1; |
4ee9c684 | 617 | TREE_STATIC (decl) = 1; |
618 | } | |
619 | ||
f0d4969f | 620 | /* Derived types are a bit peculiar because of the possibility of |
621 | a default initializer; this must be applied each time the variable | |
622 | comes into scope it therefore need not be static. These variables | |
623 | are SAVE_NONE but have an initializer. Otherwise explicitly | |
69b1505f | 624 | initialized variables are SAVE_IMPLICIT and explicitly saved are |
f0d4969f | 625 | SAVE_EXPLICIT. */ |
626 | if (!sym->attr.use_assoc | |
627 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
a961ca30 | 628 | || (sym->value && sym->ns->proc_name->attr.is_main_program) |
629 | || (gfc_option.coarray == GFC_FCOARRAY_LIB | |
630 | && sym->attr.codimension && !sym->attr.allocatable))) | |
4ee9c684 | 631 | TREE_STATIC (decl) = 1; |
ef814c81 | 632 | |
633 | if (sym->attr.volatile_) | |
634 | { | |
ef814c81 | 635 | TREE_THIS_VOLATILE (decl) = 1; |
2364aa60 | 636 | TREE_SIDE_EFFECTS (decl) = 1; |
c1977dbe | 637 | new_type = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE); |
638 | TREE_TYPE (decl) = new_type; | |
a90fe829 | 639 | } |
ef814c81 | 640 | |
4ee9c684 | 641 | /* Keep variables larger than max-stack-var-size off stack. */ |
642 | if (!sym->ns->proc_name->attr.recursive | |
643 | && INTEGER_CST_P (DECL_SIZE_UNIT (decl)) | |
a3f2c0e1 | 644 | && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) |
645 | /* Put variable length auto array pointers always into stack. */ | |
646 | && (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE | |
647 | || sym->attr.dimension == 0 | |
648 | || sym->as->type != AS_EXPLICIT | |
649 | || sym->attr.pointer | |
650 | || sym->attr.allocatable) | |
651 | && !DECL_ARTIFICIAL (decl)) | |
4ee9c684 | 652 | TREE_STATIC (decl) = 1; |
764f1175 | 653 | |
654 | /* Handle threadprivate variables. */ | |
9dda1f80 | 655 | if (sym->attr.threadprivate |
764f1175 | 656 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) |
5e68df57 | 657 | set_decl_tls_model (decl, decl_default_tls_model (decl)); |
cf5f881f | 658 | |
659 | gfc_finish_decl_attrs (decl, &sym->attr); | |
4ee9c684 | 660 | } |
661 | ||
662 | ||
663 | /* Allocate the lang-specific part of a decl. */ | |
664 | ||
665 | void | |
666 | gfc_allocate_lang_decl (tree decl) | |
667 | { | |
cf5f881f | 668 | if (DECL_LANG_SPECIFIC (decl) == NULL) |
669 | DECL_LANG_SPECIFIC (decl) = ggc_cleared_alloc<struct lang_decl> (); | |
4ee9c684 | 670 | } |
671 | ||
672 | /* Remember a symbol to generate initialization/cleanup code at function | |
673 | entry/exit. */ | |
674 | ||
675 | static void | |
676 | gfc_defer_symbol_init (gfc_symbol * sym) | |
677 | { | |
678 | gfc_symbol *p; | |
679 | gfc_symbol *last; | |
680 | gfc_symbol *head; | |
681 | ||
682 | /* Don't add a symbol twice. */ | |
683 | if (sym->tlink) | |
684 | return; | |
685 | ||
686 | last = head = sym->ns->proc_name; | |
687 | p = last->tlink; | |
688 | ||
689 | /* Make sure that setup code for dummy variables which are used in the | |
690 | setup of other variables is generated first. */ | |
691 | if (sym->attr.dummy) | |
692 | { | |
693 | /* Find the first dummy arg seen after us, or the first non-dummy arg. | |
694 | This is a circular list, so don't go past the head. */ | |
695 | while (p != head | |
696 | && (!p->attr.dummy || p->dummy_order > sym->dummy_order)) | |
697 | { | |
698 | last = p; | |
699 | p = p->tlink; | |
700 | } | |
701 | } | |
702 | /* Insert in between last and p. */ | |
703 | last->tlink = sym; | |
704 | sym->tlink = p; | |
705 | } | |
706 | ||
707 | ||
9f5a9ac5 | 708 | /* Used in gfc_get_symbol_decl and gfc_get_derived_type to obtain the |
709 | backend_decl for a module symbol, if it all ready exists. If the | |
710 | module gsymbol does not exist, it is created. If the symbol does | |
711 | not exist, it is added to the gsymbol namespace. Returns true if | |
712 | an existing backend_decl is found. */ | |
713 | ||
714 | bool | |
715 | gfc_get_module_backend_decl (gfc_symbol *sym) | |
716 | { | |
717 | gfc_gsymbol *gsym; | |
718 | gfc_symbol *s; | |
719 | gfc_symtree *st; | |
720 | ||
721 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
722 | ||
723 | if (!gsym || (gsym->ns && gsym->type == GSYM_MODULE)) | |
724 | { | |
725 | st = NULL; | |
726 | s = NULL; | |
727 | ||
728 | if (gsym) | |
729 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
730 | ||
731 | if (!s) | |
732 | { | |
733 | if (!gsym) | |
734 | { | |
735 | gsym = gfc_get_gsymbol (sym->module); | |
736 | gsym->type = GSYM_MODULE; | |
737 | gsym->ns = gfc_get_namespace (NULL, 0); | |
738 | } | |
739 | ||
740 | st = gfc_new_symtree (&gsym->ns->sym_root, sym->name); | |
741 | st->n.sym = sym; | |
742 | sym->refs++; | |
743 | } | |
744 | else if (sym->attr.flavor == FL_DERIVED) | |
745 | { | |
c2958b6b | 746 | if (s && s->attr.flavor == FL_PROCEDURE) |
747 | { | |
748 | gfc_interface *intr; | |
749 | gcc_assert (s->attr.generic); | |
750 | for (intr = s->generic; intr; intr = intr->next) | |
751 | if (intr->sym->attr.flavor == FL_DERIVED) | |
752 | { | |
753 | s = intr->sym; | |
754 | break; | |
755 | } | |
756 | } | |
757 | ||
9f5a9ac5 | 758 | if (!s->backend_decl) |
759 | s->backend_decl = gfc_get_derived_type (s); | |
760 | gfc_copy_dt_decls_ifequal (s, sym, true); | |
761 | return true; | |
762 | } | |
763 | else if (s->backend_decl) | |
764 | { | |
85ec2f13 | 765 | if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) |
9f5a9ac5 | 766 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, |
767 | true); | |
768 | else if (sym->ts.type == BT_CHARACTER) | |
769 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
770 | sym->backend_decl = s->backend_decl; | |
771 | return true; | |
772 | } | |
773 | } | |
774 | return false; | |
775 | } | |
776 | ||
777 | ||
4ee9c684 | 778 | /* Create an array index type variable with function scope. */ |
779 | ||
780 | static tree | |
781 | create_index_var (const char * pfx, int nest) | |
782 | { | |
783 | tree decl; | |
784 | ||
785 | decl = gfc_create_var_np (gfc_array_index_type, pfx); | |
786 | if (nest) | |
787 | gfc_add_decl_to_parent_function (decl); | |
788 | else | |
789 | gfc_add_decl_to_function (decl); | |
790 | return decl; | |
791 | } | |
792 | ||
793 | ||
794 | /* Create variables to hold all the non-constant bits of info for a | |
795 | descriptorless array. Remember these in the lang-specific part of the | |
796 | type. */ | |
797 | ||
798 | static void | |
799 | gfc_build_qualified_array (tree decl, gfc_symbol * sym) | |
800 | { | |
801 | tree type; | |
802 | int dim; | |
803 | int nest; | |
7b82374f | 804 | gfc_namespace* procns; |
4ee9c684 | 805 | |
806 | type = TREE_TYPE (decl); | |
807 | ||
808 | /* We just use the descriptor, if there is one. */ | |
809 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
810 | return; | |
811 | ||
22d678e8 | 812 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
7b82374f | 813 | procns = gfc_find_proc_namespace (sym->ns); |
814 | nest = (procns->proc_name->backend_decl != current_function_decl) | |
4ee9c684 | 815 | && !sym->attr.contained; |
816 | ||
a961ca30 | 817 | if (sym->attr.codimension && gfc_option.coarray == GFC_FCOARRAY_LIB |
7dce33fe | 818 | && sym->as->type != AS_ASSUMED_SHAPE |
a961ca30 | 819 | && GFC_TYPE_ARRAY_CAF_TOKEN (type) == NULL_TREE) |
820 | { | |
821 | tree token; | |
822 | ||
d881175c | 823 | token = gfc_create_var_np (build_qualified_type (pvoid_type_node, |
824 | TYPE_QUAL_RESTRICT), | |
825 | "caf_token"); | |
a961ca30 | 826 | GFC_TYPE_ARRAY_CAF_TOKEN (type) = token; |
827 | DECL_ARTIFICIAL (token) = 1; | |
828 | TREE_STATIC (token) = 1; | |
829 | gfc_add_decl_to_function (token); | |
830 | } | |
831 | ||
4ee9c684 | 832 | for (dim = 0; dim < GFC_TYPE_ARRAY_RANK (type); dim++) |
833 | { | |
834 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
86254bbf | 835 | { |
836 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
837 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
838 | } | |
9ca15c9b | 839 | /* Don't try to use the unknown bound for assumed shape arrays. */ |
4ee9c684 | 840 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE |
841 | && (sym->as->type != AS_ASSUMED_SIZE | |
842 | || dim < GFC_TYPE_ARRAY_RANK (type) - 1)) | |
86254bbf | 843 | { |
844 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
845 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
846 | } | |
4ee9c684 | 847 | |
848 | if (GFC_TYPE_ARRAY_STRIDE (type, dim) == NULL_TREE) | |
86254bbf | 849 | { |
850 | GFC_TYPE_ARRAY_STRIDE (type, dim) = create_index_var ("stride", nest); | |
851 | TREE_NO_WARNING (GFC_TYPE_ARRAY_STRIDE (type, dim)) = 1; | |
852 | } | |
4ee9c684 | 853 | } |
076094b7 | 854 | for (dim = GFC_TYPE_ARRAY_RANK (type); |
855 | dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type); dim++) | |
856 | { | |
857 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
858 | { | |
859 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
860 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
861 | } | |
862 | /* Don't try to use the unknown ubound for the last coarray dimension. */ | |
863 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE | |
864 | && dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type) - 1) | |
865 | { | |
866 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
867 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
868 | } | |
869 | } | |
4ee9c684 | 870 | if (GFC_TYPE_ARRAY_OFFSET (type) == NULL_TREE) |
871 | { | |
872 | GFC_TYPE_ARRAY_OFFSET (type) = gfc_create_var_np (gfc_array_index_type, | |
873 | "offset"); | |
86254bbf | 874 | TREE_NO_WARNING (GFC_TYPE_ARRAY_OFFSET (type)) = 1; |
875 | ||
4ee9c684 | 876 | if (nest) |
877 | gfc_add_decl_to_parent_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
878 | else | |
879 | gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
880 | } | |
d4163395 | 881 | |
882 | if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE | |
883 | && sym->as->type != AS_ASSUMED_SIZE) | |
86254bbf | 884 | { |
885 | GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest); | |
886 | TREE_NO_WARNING (GFC_TYPE_ARRAY_SIZE (type)) = 1; | |
887 | } | |
d4163395 | 888 | |
889 | if (POINTER_TYPE_P (type)) | |
890 | { | |
891 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type))); | |
892 | gcc_assert (TYPE_LANG_SPECIFIC (type) | |
893 | == TYPE_LANG_SPECIFIC (TREE_TYPE (type))); | |
894 | type = TREE_TYPE (type); | |
895 | } | |
896 | ||
897 | if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type)) | |
898 | { | |
899 | tree size, range; | |
900 | ||
fd779e1d | 901 | size = fold_build2_loc (input_location, MINUS_EXPR, gfc_array_index_type, |
902 | GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node); | |
d4163395 | 903 | range = build_range_type (gfc_array_index_type, gfc_index_zero_node, |
904 | size); | |
905 | TYPE_DOMAIN (type) = range; | |
906 | layout_type (type); | |
907 | } | |
6cf159a6 | 908 | |
6cf159a6 | 909 | if (TYPE_NAME (type) != NULL_TREE |
910 | && GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1) != NULL_TREE | |
911 | && TREE_CODE (GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1)) == VAR_DECL) | |
912 | { | |
913 | tree gtype = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
914 | ||
915 | for (dim = 0; dim < sym->as->rank - 1; dim++) | |
916 | { | |
917 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
918 | gtype = TREE_TYPE (gtype); | |
919 | } | |
920 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
921 | if (TYPE_MAX_VALUE (TYPE_DOMAIN (gtype)) == NULL) | |
922 | TYPE_NAME (type) = NULL_TREE; | |
923 | } | |
924 | ||
925 | if (TYPE_NAME (type) == NULL_TREE) | |
926 | { | |
927 | tree gtype = TREE_TYPE (type), rtype, type_decl; | |
928 | ||
929 | for (dim = sym->as->rank - 1; dim >= 0; dim--) | |
930 | { | |
7130ec9d | 931 | tree lbound, ubound; |
932 | lbound = GFC_TYPE_ARRAY_LBOUND (type, dim); | |
933 | ubound = GFC_TYPE_ARRAY_UBOUND (type, dim); | |
934 | rtype = build_range_type (gfc_array_index_type, lbound, ubound); | |
6cf159a6 | 935 | gtype = build_array_type (gtype, rtype); |
3c8f1d7e | 936 | /* Ensure the bound variables aren't optimized out at -O0. |
937 | For -O1 and above they often will be optimized out, but | |
84bfaaeb | 938 | can be tracked by VTA. Also set DECL_NAMELESS, so that |
939 | the artificial lbound.N or ubound.N DECL_NAME doesn't | |
940 | end up in debug info. */ | |
7130ec9d | 941 | if (lbound && TREE_CODE (lbound) == VAR_DECL |
942 | && DECL_ARTIFICIAL (lbound) && DECL_IGNORED_P (lbound)) | |
943 | { | |
944 | if (DECL_NAME (lbound) | |
945 | && strstr (IDENTIFIER_POINTER (DECL_NAME (lbound)), | |
946 | "lbound") != 0) | |
84bfaaeb | 947 | DECL_NAMELESS (lbound) = 1; |
7130ec9d | 948 | DECL_IGNORED_P (lbound) = 0; |
949 | } | |
950 | if (ubound && TREE_CODE (ubound) == VAR_DECL | |
951 | && DECL_ARTIFICIAL (ubound) && DECL_IGNORED_P (ubound)) | |
952 | { | |
953 | if (DECL_NAME (ubound) | |
954 | && strstr (IDENTIFIER_POINTER (DECL_NAME (ubound)), | |
955 | "ubound") != 0) | |
84bfaaeb | 956 | DECL_NAMELESS (ubound) = 1; |
7130ec9d | 957 | DECL_IGNORED_P (ubound) = 0; |
958 | } | |
6cf159a6 | 959 | } |
e60a6f7b | 960 | TYPE_NAME (type) = type_decl = build_decl (input_location, |
961 | TYPE_DECL, NULL, gtype); | |
6cf159a6 | 962 | DECL_ORIGINAL_TYPE (type_decl) = gtype; |
963 | } | |
4ee9c684 | 964 | } |
965 | ||
966 | ||
967 | /* For some dummy arguments we don't use the actual argument directly. | |
5ed82495 | 968 | Instead we create a local decl and use that. This allows us to perform |
4ee9c684 | 969 | initialization, and construct full type information. */ |
970 | ||
971 | static tree | |
972 | gfc_build_dummy_array_decl (gfc_symbol * sym, tree dummy) | |
973 | { | |
974 | tree decl; | |
975 | tree type; | |
976 | gfc_array_spec *as; | |
977 | char *name; | |
3d8dea5a | 978 | gfc_packed packed; |
4ee9c684 | 979 | int n; |
980 | bool known_size; | |
981 | ||
f00f6dd6 | 982 | if (sym->attr.pointer || sym->attr.allocatable |
983 | || (sym->as && sym->as->type == AS_ASSUMED_RANK)) | |
4ee9c684 | 984 | return dummy; |
985 | ||
986 | /* Add to list of variables if not a fake result variable. */ | |
987 | if (sym->attr.result || sym->attr.dummy) | |
988 | gfc_defer_symbol_init (sym); | |
989 | ||
990 | type = TREE_TYPE (dummy); | |
22d678e8 | 991 | gcc_assert (TREE_CODE (dummy) == PARM_DECL |
4ee9c684 | 992 | && POINTER_TYPE_P (type)); |
993 | ||
f888a3fb | 994 | /* Do we know the element size? */ |
4ee9c684 | 995 | known_size = sym->ts.type != BT_CHARACTER |
eeebe20b | 996 | || INTEGER_CST_P (sym->ts.u.cl->backend_decl); |
a90fe829 | 997 | |
4ee9c684 | 998 | if (known_size && !GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (type))) |
999 | { | |
1000 | /* For descriptorless arrays with known element size the actual | |
1001 | argument is sufficient. */ | |
22d678e8 | 1002 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
4ee9c684 | 1003 | gfc_build_qualified_array (dummy, sym); |
1004 | return dummy; | |
1005 | } | |
1006 | ||
1007 | type = TREE_TYPE (type); | |
1008 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
1009 | { | |
cb8e3560 | 1010 | /* Create a descriptorless array pointer. */ |
4ee9c684 | 1011 | as = sym->as; |
3d8dea5a | 1012 | packed = PACKED_NO; |
3d235846 | 1013 | |
1014 | /* Even when -frepack-arrays is used, symbols with TARGET attribute | |
1015 | are not repacked. */ | |
1016 | if (!gfc_option.flag_repack_arrays || sym->attr.target) | |
4ee9c684 | 1017 | { |
1018 | if (as->type == AS_ASSUMED_SIZE) | |
3d8dea5a | 1019 | packed = PACKED_FULL; |
4ee9c684 | 1020 | } |
1021 | else | |
1022 | { | |
1023 | if (as->type == AS_EXPLICIT) | |
1024 | { | |
3d8dea5a | 1025 | packed = PACKED_FULL; |
4ee9c684 | 1026 | for (n = 0; n < as->rank; n++) |
1027 | { | |
1028 | if (!(as->upper[n] | |
1029 | && as->lower[n] | |
1030 | && as->upper[n]->expr_type == EXPR_CONSTANT | |
1031 | && as->lower[n]->expr_type == EXPR_CONSTANT)) | |
73bd65ab | 1032 | { |
1033 | packed = PACKED_PARTIAL; | |
1034 | break; | |
1035 | } | |
4ee9c684 | 1036 | } |
1037 | } | |
1038 | else | |
3d8dea5a | 1039 | packed = PACKED_PARTIAL; |
4ee9c684 | 1040 | } |
1041 | ||
1042 | type = gfc_typenode_for_spec (&sym->ts); | |
e1b3b79b | 1043 | type = gfc_get_nodesc_array_type (type, sym->as, packed, |
1044 | !sym->attr.target); | |
4ee9c684 | 1045 | } |
1046 | else | |
1047 | { | |
1048 | /* We now have an expression for the element size, so create a fully | |
1049 | qualified type. Reset sym->backend decl or this will just return the | |
1050 | old type. */ | |
d95efb59 | 1051 | DECL_ARTIFICIAL (sym->backend_decl) = 1; |
4ee9c684 | 1052 | sym->backend_decl = NULL_TREE; |
1053 | type = gfc_sym_type (sym); | |
3d8dea5a | 1054 | packed = PACKED_FULL; |
4ee9c684 | 1055 | } |
1056 | ||
1057 | ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0); | |
e60a6f7b | 1058 | decl = build_decl (input_location, |
1059 | VAR_DECL, get_identifier (name), type); | |
4ee9c684 | 1060 | |
1061 | DECL_ARTIFICIAL (decl) = 1; | |
84bfaaeb | 1062 | DECL_NAMELESS (decl) = 1; |
4ee9c684 | 1063 | TREE_PUBLIC (decl) = 0; |
1064 | TREE_STATIC (decl) = 0; | |
1065 | DECL_EXTERNAL (decl) = 0; | |
1066 | ||
a1f1e248 | 1067 | /* Avoid uninitialized warnings for optional dummy arguments. */ |
1068 | if (sym->attr.optional) | |
1069 | TREE_NO_WARNING (decl) = 1; | |
1070 | ||
4ee9c684 | 1071 | /* We should never get deferred shape arrays here. We used to because of |
1072 | frontend bugs. */ | |
22d678e8 | 1073 | gcc_assert (sym->as->type != AS_DEFERRED); |
4ee9c684 | 1074 | |
3d8dea5a | 1075 | if (packed == PACKED_PARTIAL) |
1076 | GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1; | |
1077 | else if (packed == PACKED_FULL) | |
1078 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
4ee9c684 | 1079 | |
1080 | gfc_build_qualified_array (decl, sym); | |
1081 | ||
1082 | if (DECL_LANG_SPECIFIC (dummy)) | |
1083 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (dummy); | |
1084 | else | |
1085 | gfc_allocate_lang_decl (decl); | |
1086 | ||
1087 | GFC_DECL_SAVED_DESCRIPTOR (decl) = dummy; | |
1088 | ||
1089 | if (sym->ns->proc_name->backend_decl == current_function_decl | |
1090 | || sym->attr.contained) | |
1091 | gfc_add_decl_to_function (decl); | |
1092 | else | |
1093 | gfc_add_decl_to_parent_function (decl); | |
1094 | ||
1095 | return decl; | |
1096 | } | |
1097 | ||
9579733e | 1098 | /* For symbol SYM with GFC_DECL_SAVED_DESCRIPTOR used in contained |
1099 | function add a VAR_DECL to the current function with DECL_VALUE_EXPR | |
1100 | pointing to the artificial variable for debug info purposes. */ | |
1101 | ||
1102 | static void | |
1103 | gfc_nonlocal_dummy_array_decl (gfc_symbol *sym) | |
1104 | { | |
1105 | tree decl, dummy; | |
1106 | ||
1107 | if (! nonlocal_dummy_decl_pset) | |
431205b7 | 1108 | nonlocal_dummy_decl_pset = new hash_set<tree>; |
9579733e | 1109 | |
431205b7 | 1110 | if (nonlocal_dummy_decl_pset->add (sym->backend_decl)) |
9579733e | 1111 | return; |
1112 | ||
1113 | dummy = GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl); | |
e60a6f7b | 1114 | decl = build_decl (input_location, VAR_DECL, DECL_NAME (dummy), |
9579733e | 1115 | TREE_TYPE (sym->backend_decl)); |
1116 | DECL_ARTIFICIAL (decl) = 0; | |
1117 | TREE_USED (decl) = 1; | |
1118 | TREE_PUBLIC (decl) = 0; | |
1119 | TREE_STATIC (decl) = 0; | |
1120 | DECL_EXTERNAL (decl) = 0; | |
1121 | if (DECL_BY_REFERENCE (dummy)) | |
1122 | DECL_BY_REFERENCE (decl) = 1; | |
1123 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (sym->backend_decl); | |
1124 | SET_DECL_VALUE_EXPR (decl, sym->backend_decl); | |
1125 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
1126 | DECL_CONTEXT (decl) = DECL_CONTEXT (sym->backend_decl); | |
1767a056 | 1127 | DECL_CHAIN (decl) = nonlocal_dummy_decls; |
9579733e | 1128 | nonlocal_dummy_decls = decl; |
1129 | } | |
4ee9c684 | 1130 | |
1131 | /* Return a constant or a variable to use as a string length. Does not | |
1132 | add the decl to the current scope. */ | |
1133 | ||
1134 | static tree | |
1135 | gfc_create_string_length (gfc_symbol * sym) | |
1136 | { | |
eeebe20b | 1137 | gcc_assert (sym->ts.u.cl); |
1138 | gfc_conv_const_charlen (sym->ts.u.cl); | |
a4abf8a0 | 1139 | |
eeebe20b | 1140 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
4ee9c684 | 1141 | { |
a4abf8a0 | 1142 | tree length; |
774bbd60 | 1143 | const char *name; |
4ee9c684 | 1144 | |
873f242d | 1145 | /* The string length variable shall be in static memory if it is either |
1146 | explicitly SAVED, a module variable or with -fno-automatic. Only | |
1147 | relevant is "len=:" - otherwise, it is either a constant length or | |
1148 | it is an automatic variable. */ | |
be125be0 | 1149 | bool static_length = sym->attr.save |
1150 | || sym->ns->proc_name->attr.flavor == FL_MODULE | |
873f242d | 1151 | || (gfc_option.flag_max_stack_var_size == 0 |
1152 | && sym->ts.deferred && !sym->attr.dummy | |
1153 | && !sym->attr.result && !sym->attr.function); | |
be125be0 | 1154 | |
1155 | /* Also prefix the mangled name. We need to call GFC_PREFIX for static | |
1156 | variables as some systems do not support the "." in the assembler name. | |
1157 | For nonstatic variables, the "." does not appear in assembler. */ | |
1158 | if (static_length) | |
1159 | { | |
1160 | if (sym->module) | |
1161 | name = gfc_get_string (GFC_PREFIX ("%s_MOD_%s"), sym->module, | |
1162 | sym->name); | |
1163 | else | |
1164 | name = gfc_get_string (GFC_PREFIX ("%s"), sym->name); | |
1165 | } | |
1166 | else if (sym->module) | |
774bbd60 | 1167 | name = gfc_get_string (".__%s_MOD_%s", sym->module, sym->name); |
1168 | else | |
1169 | name = gfc_get_string (".%s", sym->name); | |
1170 | ||
e60a6f7b | 1171 | length = build_decl (input_location, |
1172 | VAR_DECL, get_identifier (name), | |
9ad09405 | 1173 | gfc_charlen_type_node); |
4ee9c684 | 1174 | DECL_ARTIFICIAL (length) = 1; |
1175 | TREE_USED (length) = 1; | |
d4163395 | 1176 | if (sym->ns->proc_name->tlink != NULL) |
1177 | gfc_defer_symbol_init (sym); | |
a4abf8a0 | 1178 | |
eeebe20b | 1179 | sym->ts.u.cl->backend_decl = length; |
774bbd60 | 1180 | |
be125be0 | 1181 | if (static_length) |
774bbd60 | 1182 | TREE_STATIC (length) = 1; |
1183 | ||
1184 | if (sym->ns->proc_name->attr.flavor == FL_MODULE | |
1185 | && (sym->attr.access != ACCESS_PRIVATE || sym->attr.public_used)) | |
1186 | TREE_PUBLIC (length) = 1; | |
4ee9c684 | 1187 | } |
1188 | ||
eeebe20b | 1189 | gcc_assert (sym->ts.u.cl->backend_decl != NULL_TREE); |
1190 | return sym->ts.u.cl->backend_decl; | |
4ee9c684 | 1191 | } |
1192 | ||
c8f1568f | 1193 | /* If a variable is assigned a label, we add another two auxiliary |
1194 | variables. */ | |
1195 | ||
1196 | static void | |
1197 | gfc_add_assign_aux_vars (gfc_symbol * sym) | |
1198 | { | |
1199 | tree addr; | |
1200 | tree length; | |
1201 | tree decl; | |
1202 | ||
1203 | gcc_assert (sym->backend_decl); | |
1204 | ||
1205 | decl = sym->backend_decl; | |
1206 | gfc_allocate_lang_decl (decl); | |
1207 | GFC_DECL_ASSIGN (decl) = 1; | |
e60a6f7b | 1208 | length = build_decl (input_location, |
1209 | VAR_DECL, create_tmp_var_name (sym->name), | |
c8f1568f | 1210 | gfc_charlen_type_node); |
e60a6f7b | 1211 | addr = build_decl (input_location, |
1212 | VAR_DECL, create_tmp_var_name (sym->name), | |
c8f1568f | 1213 | pvoid_type_node); |
1214 | gfc_finish_var_decl (length, sym); | |
1215 | gfc_finish_var_decl (addr, sym); | |
1216 | /* STRING_LENGTH is also used as flag. Less than -1 means that | |
1217 | ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the | |
1218 | target label's address. Otherwise, value is the length of a format string | |
1219 | and ASSIGN_ADDR is its address. */ | |
1220 | if (TREE_STATIC (length)) | |
35bf1214 | 1221 | DECL_INITIAL (length) = build_int_cst (gfc_charlen_type_node, -2); |
c8f1568f | 1222 | else |
1223 | gfc_defer_symbol_init (sym); | |
1224 | ||
1225 | GFC_DECL_STRING_LEN (decl) = length; | |
1226 | GFC_DECL_ASSIGN_ADDR (decl) = addr; | |
1227 | } | |
4ee9c684 | 1228 | |
36b0a1b0 | 1229 | |
1230 | static tree | |
1231 | add_attributes_to_decl (symbol_attribute sym_attr, tree list) | |
1232 | { | |
1233 | unsigned id; | |
1234 | tree attr; | |
1235 | ||
1236 | for (id = 0; id < EXT_ATTR_NUM; id++) | |
1237 | if (sym_attr.ext_attr & (1 << id)) | |
1238 | { | |
1239 | attr = build_tree_list ( | |
1240 | get_identifier (ext_attr_list[id].middle_end_name), | |
1241 | NULL_TREE); | |
1242 | list = chainon (list, attr); | |
1243 | } | |
1244 | ||
691447ab | 1245 | if (sym_attr.omp_declare_target) |
1246 | list = tree_cons (get_identifier ("omp declare target"), | |
1247 | NULL_TREE, list); | |
1248 | ||
36b0a1b0 | 1249 | return list; |
1250 | } | |
1251 | ||
1252 | ||
802532b9 | 1253 | static void build_function_decl (gfc_symbol * sym, bool global); |
1254 | ||
1255 | ||
4ee9c684 | 1256 | /* Return the decl for a gfc_symbol, create it if it doesn't already |
1257 | exist. */ | |
1258 | ||
1259 | tree | |
1260 | gfc_get_symbol_decl (gfc_symbol * sym) | |
1261 | { | |
1262 | tree decl; | |
1263 | tree length = NULL_TREE; | |
36b0a1b0 | 1264 | tree attributes; |
4ee9c684 | 1265 | int byref; |
cd2c99b8 | 1266 | bool intrinsic_array_parameter = false; |
8b9eb27e | 1267 | bool fun_or_res; |
4ee9c684 | 1268 | |
0b5dc8b5 | 1269 | gcc_assert (sym->attr.referenced |
9e45357a | 1270 | || sym->attr.flavor == FL_PROCEDURE |
1271 | || sym->attr.use_assoc | |
1272 | || sym->ns->proc_name->attr.if_source == IFSRC_IFBODY | |
1273 | || (sym->module && sym->attr.if_source != IFSRC_DECL | |
1274 | && sym->backend_decl)); | |
4ee9c684 | 1275 | |
ff70e443 | 1276 | if (sym->ns && sym->ns->proc_name && sym->ns->proc_name->attr.function) |
4ee9c684 | 1277 | byref = gfc_return_by_reference (sym->ns->proc_name); |
1278 | else | |
1279 | byref = 0; | |
1280 | ||
09c509ed | 1281 | /* Make sure that the vtab for the declared type is completed. */ |
1282 | if (sym->ts.type == BT_CLASS) | |
1283 | { | |
50b4b37b | 1284 | gfc_component *c = CLASS_DATA (sym); |
09c509ed | 1285 | if (!c->ts.u.derived->backend_decl) |
eab71f19 | 1286 | { |
1287 | gfc_find_derived_vtab (c->ts.u.derived); | |
1288 | gfc_get_derived_type (sym->ts.u.derived); | |
1289 | } | |
09c509ed | 1290 | } |
1291 | ||
617125a6 | 1292 | /* All deferred character length procedures need to retain the backend |
1293 | decl, which is a pointer to the character length in the caller's | |
1294 | namespace and to declare a local character length. */ | |
1295 | if (!byref && sym->attr.function | |
1296 | && sym->ts.type == BT_CHARACTER | |
1297 | && sym->ts.deferred | |
1298 | && sym->ts.u.cl->passed_length == NULL | |
1299 | && sym->ts.u.cl->backend_decl | |
1300 | && TREE_CODE (sym->ts.u.cl->backend_decl) == PARM_DECL) | |
1301 | { | |
1302 | sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1303 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1304 | length = gfc_create_string_length (sym); | |
1305 | } | |
1306 | ||
8b9eb27e | 1307 | fun_or_res = byref && (sym->attr.result |
1308 | || (sym->attr.function && sym->ts.deferred)); | |
1309 | if ((sym->attr.dummy && ! sym->attr.function) || fun_or_res) | |
4ee9c684 | 1310 | { |
1311 | /* Return via extra parameter. */ | |
1312 | if (sym->attr.result && byref | |
1313 | && !sym->backend_decl) | |
1314 | { | |
1315 | sym->backend_decl = | |
1316 | DECL_ARGUMENTS (sym->ns->proc_name->backend_decl); | |
c6871095 | 1317 | /* For entry master function skip over the __entry |
1318 | argument. */ | |
1319 | if (sym->ns->proc_name->attr.entry_master) | |
1767a056 | 1320 | sym->backend_decl = DECL_CHAIN (sym->backend_decl); |
4ee9c684 | 1321 | } |
1322 | ||
1323 | /* Dummy variables should already have been created. */ | |
22d678e8 | 1324 | gcc_assert (sym->backend_decl); |
4ee9c684 | 1325 | |
1326 | /* Create a character length variable. */ | |
1327 | if (sym->ts.type == BT_CHARACTER) | |
1328 | { | |
617125a6 | 1329 | /* For a deferred dummy, make a new string length variable. */ |
1330 | if (sym->ts.deferred | |
1331 | && | |
1332 | (sym->ts.u.cl->passed_length == sym->ts.u.cl->backend_decl)) | |
1333 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1334 | ||
8b9eb27e | 1335 | if (sym->ts.deferred && fun_or_res |
617125a6 | 1336 | && sym->ts.u.cl->passed_length == NULL |
1337 | && sym->ts.u.cl->backend_decl) | |
1338 | { | |
1339 | sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1340 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1341 | } | |
1342 | ||
eeebe20b | 1343 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
d4163395 | 1344 | length = gfc_create_string_length (sym); |
1345 | else | |
eeebe20b | 1346 | length = sym->ts.u.cl->backend_decl; |
d4163395 | 1347 | if (TREE_CODE (length) == VAR_DECL |
16a40513 | 1348 | && DECL_FILE_SCOPE_P (length)) |
4ee9c684 | 1349 | { |
d95efb59 | 1350 | /* Add the string length to the same context as the symbol. */ |
1351 | if (DECL_CONTEXT (sym->backend_decl) == current_function_decl) | |
1352 | gfc_add_decl_to_function (length); | |
1353 | else | |
1354 | gfc_add_decl_to_parent_function (length); | |
1355 | ||
1356 | gcc_assert (DECL_CONTEXT (sym->backend_decl) == | |
1357 | DECL_CONTEXT (length)); | |
1358 | ||
d4163395 | 1359 | gfc_defer_symbol_init (sym); |
e8ff3944 | 1360 | } |
4ee9c684 | 1361 | } |
1362 | ||
1363 | /* Use a copy of the descriptor for dummy arrays. */ | |
7a777e43 | 1364 | if ((sym->attr.dimension || sym->attr.codimension) |
1365 | && !TREE_USED (sym->backend_decl)) | |
4ee9c684 | 1366 | { |
d95efb59 | 1367 | decl = gfc_build_dummy_array_decl (sym, sym->backend_decl); |
1368 | /* Prevent the dummy from being detected as unused if it is copied. */ | |
1369 | if (sym->backend_decl != NULL && decl != sym->backend_decl) | |
1370 | DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
1371 | sym->backend_decl = decl; | |
4ee9c684 | 1372 | } |
1373 | ||
1374 | TREE_USED (sym->backend_decl) = 1; | |
c8f1568f | 1375 | if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0) |
1376 | { | |
1377 | gfc_add_assign_aux_vars (sym); | |
1378 | } | |
9579733e | 1379 | |
1380 | if (sym->attr.dimension | |
1381 | && DECL_LANG_SPECIFIC (sym->backend_decl) | |
1382 | && GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl) | |
1383 | && DECL_CONTEXT (sym->backend_decl) != current_function_decl) | |
1384 | gfc_nonlocal_dummy_array_decl (sym); | |
1385 | ||
fd23cc08 | 1386 | if (sym->ts.type == BT_CLASS && sym->backend_decl) |
1387 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1388 | ||
1389 | if (sym->ts.type == BT_CLASS && sym->backend_decl) | |
1390 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1391 | return sym->backend_decl; | |
4ee9c684 | 1392 | } |
1393 | ||
1394 | if (sym->backend_decl) | |
1395 | return sym->backend_decl; | |
1396 | ||
a25debd0 | 1397 | /* Special case for array-valued named constants from intrinsic |
1398 | procedures; those are inlined. */ | |
d566c3e0 | 1399 | if (sym->attr.use_assoc && sym->attr.flavor == FL_PARAMETER |
1400 | && (sym->from_intmod == INTMOD_ISO_FORTRAN_ENV | |
1401 | || sym->from_intmod == INTMOD_ISO_C_BINDING)) | |
a25debd0 | 1402 | intrinsic_array_parameter = true; |
1403 | ||
044bbd71 | 1404 | /* If use associated compilation, use the module |
094bca96 | 1405 | declaration. */ |
044bbd71 | 1406 | if ((sym->attr.flavor == FL_VARIABLE |
1407 | || sym->attr.flavor == FL_PARAMETER) | |
1408 | && sym->attr.use_assoc | |
1409 | && !intrinsic_array_parameter | |
1410 | && sym->module | |
1411 | && gfc_get_module_backend_decl (sym)) | |
fd23cc08 | 1412 | { |
1413 | if (sym->ts.type == BT_CLASS && sym->backend_decl) | |
1414 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1415 | return sym->backend_decl; | |
1416 | } | |
7ea64434 | 1417 | |
4ee9c684 | 1418 | if (sym->attr.flavor == FL_PROCEDURE) |
1419 | { | |
77d080ca | 1420 | /* Catch functions. Only used for actual parameters, |
802532b9 | 1421 | procedure pointers and procptr initialization targets. */ |
77d080ca | 1422 | if (sym->attr.use_assoc || sym->attr.intrinsic |
1423 | || sym->attr.if_source != IFSRC_DECL) | |
802532b9 | 1424 | { |
1425 | decl = gfc_get_extern_function_decl (sym); | |
1426 | gfc_set_decl_location (decl, &sym->declared_at); | |
1427 | } | |
1428 | else | |
1429 | { | |
1430 | if (!sym->backend_decl) | |
1431 | build_function_decl (sym, false); | |
1432 | decl = sym->backend_decl; | |
1433 | } | |
4ee9c684 | 1434 | return decl; |
1435 | } | |
1436 | ||
1437 | if (sym->attr.intrinsic) | |
382ad5c3 | 1438 | gfc_internal_error ("intrinsic variable which isn't a procedure"); |
4ee9c684 | 1439 | |
1440 | /* Create string length decl first so that they can be used in the | |
1441 | type declaration. */ | |
1442 | if (sym->ts.type == BT_CHARACTER) | |
1443 | length = gfc_create_string_length (sym); | |
1444 | ||
1445 | /* Create the decl for the variable. */ | |
e60a6f7b | 1446 | decl = build_decl (sym->declared_at.lb->location, |
1447 | VAR_DECL, gfc_sym_identifier (sym), gfc_sym_type (sym)); | |
b31f705b | 1448 | |
1236e28b | 1449 | /* Add attributes to variables. Functions are handled elsewhere. */ |
1450 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); | |
1451 | decl_attributes (&decl, attributes, 0); | |
1452 | ||
f888a3fb | 1453 | /* Symbols from modules should have their assembler names mangled. |
4ee9c684 | 1454 | This is done here rather than in gfc_finish_var_decl because it |
1455 | is different for string length variables. */ | |
4f0fae8e | 1456 | if (sym->module) |
df4d540f | 1457 | { |
1236e28b | 1458 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); |
cd2c99b8 | 1459 | if (sym->attr.use_assoc && !intrinsic_array_parameter) |
df4d540f | 1460 | DECL_IGNORED_P (decl) = 1; |
1461 | } | |
4ee9c684 | 1462 | |
bc5663df | 1463 | if (sym->attr.select_type_temporary) |
1464 | { | |
1465 | DECL_ARTIFICIAL (decl) = 1; | |
1466 | DECL_IGNORED_P (decl) = 1; | |
1467 | } | |
1468 | ||
7a777e43 | 1469 | if (sym->attr.dimension || sym->attr.codimension) |
4ee9c684 | 1470 | { |
1471 | /* Create variables to hold the non-constant bits of array info. */ | |
1472 | gfc_build_qualified_array (decl, sym); | |
1473 | ||
b3c3927c | 1474 | if (sym->attr.contiguous |
1475 | || ((sym->attr.allocatable || !sym->attr.dummy) && !sym->attr.pointer)) | |
4ee9c684 | 1476 | GFC_DECL_PACKED_ARRAY (decl) = 1; |
1477 | } | |
1478 | ||
0a96a7cc | 1479 | /* Remember this variable for allocation/cleanup. */ |
7c7db7f6 | 1480 | if (sym->attr.dimension || sym->attr.allocatable || sym->attr.codimension |
0a96a7cc | 1481 | || (sym->ts.type == BT_CLASS && |
50b4b37b | 1482 | (CLASS_DATA (sym)->attr.dimension |
1483 | || CLASS_DATA (sym)->attr.allocatable)) | |
6b3ceb4e | 1484 | || (sym->ts.type == BT_DERIVED |
1485 | && (sym->ts.u.derived->attr.alloc_comp | |
1486 | || (!sym->attr.pointer && !sym->attr.artificial && !sym->attr.save | |
1487 | && !sym->ns->proc_name->attr.is_main_program | |
1488 | && gfc_is_finalizable (sym->ts.u.derived, NULL)))) | |
0a96a7cc | 1489 | /* This applies a derived type default initializer. */ |
1490 | || (sym->ts.type == BT_DERIVED | |
1491 | && sym->attr.save == SAVE_NONE | |
1492 | && !sym->attr.data | |
1493 | && !sym->attr.allocatable | |
1494 | && (sym->value && !sym->ns->proc_name->attr.is_main_program) | |
cd2c99b8 | 1495 | && !(sym->attr.use_assoc && !intrinsic_array_parameter))) |
f0d4969f | 1496 | gfc_defer_symbol_init (sym); |
2294b616 | 1497 | |
4ee9c684 | 1498 | gfc_finish_var_decl (decl, sym); |
1499 | ||
bda1f152 | 1500 | if (sym->ts.type == BT_CHARACTER) |
4ee9c684 | 1501 | { |
4ee9c684 | 1502 | /* Character variables need special handling. */ |
1503 | gfc_allocate_lang_decl (decl); | |
1504 | ||
bda1f152 | 1505 | if (TREE_CODE (length) != INTEGER_CST) |
4ee9c684 | 1506 | { |
4ee9c684 | 1507 | gfc_finish_var_decl (length, sym); |
22d678e8 | 1508 | gcc_assert (!sym->value); |
4ee9c684 | 1509 | } |
4ee9c684 | 1510 | } |
1033248c | 1511 | else if (sym->attr.subref_array_pointer) |
1512 | { | |
1513 | /* We need the span for these beasts. */ | |
1514 | gfc_allocate_lang_decl (decl); | |
1515 | } | |
1516 | ||
1517 | if (sym->attr.subref_array_pointer) | |
1518 | { | |
1519 | tree span; | |
1520 | GFC_DECL_SUBREF_ARRAY_P (decl) = 1; | |
e60a6f7b | 1521 | span = build_decl (input_location, |
1522 | VAR_DECL, create_tmp_var_name ("span"), | |
1033248c | 1523 | gfc_array_index_type); |
1524 | gfc_finish_var_decl (span, sym); | |
6180d82a | 1525 | TREE_STATIC (span) = TREE_STATIC (decl); |
1526 | DECL_ARTIFICIAL (span) = 1; | |
1033248c | 1527 | |
1528 | GFC_DECL_SPAN (decl) = span; | |
6180d82a | 1529 | GFC_TYPE_ARRAY_SPAN (TREE_TYPE (decl)) = span; |
1033248c | 1530 | } |
1531 | ||
fd23cc08 | 1532 | if (sym->ts.type == BT_CLASS) |
1533 | GFC_DECL_CLASS(decl) = 1; | |
1534 | ||
4ee9c684 | 1535 | sym->backend_decl = decl; |
1536 | ||
c8f1568f | 1537 | if (sym->attr.assign) |
21ebda4d | 1538 | gfc_add_assign_aux_vars (sym); |
c8f1568f | 1539 | |
cd2c99b8 | 1540 | if (intrinsic_array_parameter) |
1541 | { | |
1542 | TREE_STATIC (decl) = 1; | |
1543 | DECL_EXTERNAL (decl) = 0; | |
1544 | } | |
1545 | ||
1546 | if (TREE_STATIC (decl) | |
1547 | && !(sym->attr.use_assoc && !intrinsic_array_parameter) | |
a545a8f8 | 1548 | && (sym->attr.save || sym->ns->proc_name->attr.is_main_program |
1549 | || gfc_option.flag_max_stack_var_size == 0 | |
a961ca30 | 1550 | || sym->attr.data || sym->ns->proc_name->attr.flavor == FL_MODULE) |
0d3bb1de | 1551 | && (gfc_option.coarray != GFC_FCOARRAY_LIB |
1552 | || !sym->attr.codimension || sym->attr.allocatable)) | |
a545a8f8 | 1553 | { |
1554 | /* Add static initializer. For procedures, it is only needed if | |
1555 | SAVE is specified otherwise they need to be reinitialized | |
1556 | every time the procedure is entered. The TREE_STATIC is | |
1557 | in this case due to -fmax-stack-var-size=. */ | |
2e42c60f | 1558 | |
bda1f152 | 1559 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
2e42c60f | 1560 | TREE_TYPE (decl), sym->attr.dimension |
1561 | || (sym->attr.codimension | |
1562 | && sym->attr.allocatable), | |
1563 | sym->attr.pointer || sym->attr.allocatable | |
1564 | || sym->ts.type == BT_CLASS, | |
1565 | sym->attr.proc_pointer); | |
bda1f152 | 1566 | } |
1567 | ||
9579733e | 1568 | if (!TREE_STATIC (decl) |
1569 | && POINTER_TYPE_P (TREE_TYPE (decl)) | |
1570 | && !sym->attr.pointer | |
1571 | && !sym->attr.allocatable | |
bc5663df | 1572 | && !sym->attr.proc_pointer |
1573 | && !sym->attr.select_type_temporary) | |
9579733e | 1574 | DECL_BY_REFERENCE (decl) = 1; |
1575 | ||
cf5f881f | 1576 | if (sym->attr.associate_var) |
1577 | GFC_DECL_ASSOCIATE_VAR_P (decl) = 1; | |
1578 | ||
ebad7c3e | 1579 | if (sym->attr.vtab |
1580 | || (sym->name[0] == '_' && strncmp ("__def_init", sym->name, 10) == 0)) | |
4c197fd0 | 1581 | TREE_READONLY (decl) = 1; |
ebad7c3e | 1582 | |
4ee9c684 | 1583 | return decl; |
1584 | } | |
1585 | ||
1586 | ||
dbe60343 | 1587 | /* Substitute a temporary variable in place of the real one. */ |
1588 | ||
1589 | void | |
1590 | gfc_shadow_sym (gfc_symbol * sym, tree decl, gfc_saved_var * save) | |
1591 | { | |
1592 | save->attr = sym->attr; | |
1593 | save->decl = sym->backend_decl; | |
1594 | ||
1595 | gfc_clear_attr (&sym->attr); | |
1596 | sym->attr.referenced = 1; | |
1597 | sym->attr.flavor = FL_VARIABLE; | |
1598 | ||
1599 | sym->backend_decl = decl; | |
1600 | } | |
1601 | ||
1602 | ||
1603 | /* Restore the original variable. */ | |
1604 | ||
1605 | void | |
1606 | gfc_restore_sym (gfc_symbol * sym, gfc_saved_var * save) | |
1607 | { | |
1608 | sym->attr = save->attr; | |
1609 | sym->backend_decl = save->decl; | |
1610 | } | |
1611 | ||
1612 | ||
cad0ddcf | 1613 | /* Declare a procedure pointer. */ |
1614 | ||
1615 | static tree | |
1616 | get_proc_pointer_decl (gfc_symbol *sym) | |
1617 | { | |
1618 | tree decl; | |
36b0a1b0 | 1619 | tree attributes; |
cad0ddcf | 1620 | |
1621 | decl = sym->backend_decl; | |
1622 | if (decl) | |
1623 | return decl; | |
1624 | ||
e60a6f7b | 1625 | decl = build_decl (input_location, |
1626 | VAR_DECL, get_identifier (sym->name), | |
cad0ddcf | 1627 | build_pointer_type (gfc_get_function_type (sym))); |
1628 | ||
ea6f8461 | 1629 | if (sym->module) |
1630 | { | |
1631 | /* Apply name mangling. */ | |
1632 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); | |
1633 | if (sym->attr.use_assoc) | |
1634 | DECL_IGNORED_P (decl) = 1; | |
1635 | } | |
a90fe829 | 1636 | |
e72f979a | 1637 | if ((sym->ns->proc_name |
1638 | && sym->ns->proc_name->backend_decl == current_function_decl) | |
cad0ddcf | 1639 | || sym->attr.contained) |
1640 | gfc_add_decl_to_function (decl); | |
cf269acc | 1641 | else if (sym->ns->proc_name->attr.flavor != FL_MODULE) |
cad0ddcf | 1642 | gfc_add_decl_to_parent_function (decl); |
1643 | ||
1644 | sym->backend_decl = decl; | |
1645 | ||
cf269acc | 1646 | /* If a variable is USE associated, it's always external. */ |
1647 | if (sym->attr.use_assoc) | |
1648 | { | |
1649 | DECL_EXTERNAL (decl) = 1; | |
1650 | TREE_PUBLIC (decl) = 1; | |
1651 | } | |
1652 | else if (sym->module && sym->ns->proc_name->attr.flavor == FL_MODULE) | |
1653 | { | |
1654 | /* This is the declaration of a module variable. */ | |
1655 | TREE_PUBLIC (decl) = 1; | |
1656 | TREE_STATIC (decl) = 1; | |
1657 | } | |
1658 | ||
cad0ddcf | 1659 | if (!sym->attr.use_assoc |
1660 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
1661 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
1662 | TREE_STATIC (decl) = 1; | |
1663 | ||
1664 | if (TREE_STATIC (decl) && sym->value) | |
1665 | { | |
1666 | /* Add static initializer. */ | |
1667 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
802532b9 | 1668 | TREE_TYPE (decl), |
1669 | sym->attr.dimension, | |
1670 | false, true); | |
cad0ddcf | 1671 | } |
1672 | ||
8fb1768c | 1673 | /* Handle threadprivate procedure pointers. */ |
1674 | if (sym->attr.threadprivate | |
1675 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) | |
5e68df57 | 1676 | set_decl_tls_model (decl, decl_default_tls_model (decl)); |
8fb1768c | 1677 | |
36b0a1b0 | 1678 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1679 | decl_attributes (&decl, attributes, 0); | |
1680 | ||
cad0ddcf | 1681 | return decl; |
1682 | } | |
1683 | ||
1684 | ||
4ee9c684 | 1685 | /* Get a basic decl for an external function. */ |
1686 | ||
1687 | tree | |
1688 | gfc_get_extern_function_decl (gfc_symbol * sym) | |
1689 | { | |
1690 | tree type; | |
1691 | tree fndecl; | |
36b0a1b0 | 1692 | tree attributes; |
4ee9c684 | 1693 | gfc_expr e; |
1694 | gfc_intrinsic_sym *isym; | |
1695 | gfc_expr argexpr; | |
17000b91 | 1696 | char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */ |
4ee9c684 | 1697 | tree name; |
1698 | tree mangled_name; | |
83aeedb9 | 1699 | gfc_gsymbol *gsym; |
4ee9c684 | 1700 | |
1701 | if (sym->backend_decl) | |
1702 | return sym->backend_decl; | |
1703 | ||
1b716045 | 1704 | /* We should never be creating external decls for alternate entry points. |
1705 | The procedure may be an alternate entry point, but we don't want/need | |
1706 | to know that. */ | |
22d678e8 | 1707 | gcc_assert (!(sym->attr.entry || sym->attr.entry_master)); |
1b716045 | 1708 | |
cad0ddcf | 1709 | if (sym->attr.proc_pointer) |
1710 | return get_proc_pointer_decl (sym); | |
1711 | ||
83aeedb9 | 1712 | /* See if this is an external procedure from the same file. If so, |
1713 | return the backend_decl. */ | |
da5c730d | 1714 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->binding_label |
1715 | ? sym->binding_label : sym->name); | |
83aeedb9 | 1716 | |
c8b913ab | 1717 | if (gsym && !gsym->defined) |
1718 | gsym = NULL; | |
1719 | ||
1720 | /* This can happen because of C binding. */ | |
1721 | if (gsym && gsym->ns && gsym->ns->proc_name | |
1722 | && gsym->ns->proc_name->attr.flavor == FL_MODULE) | |
1723 | goto module_sym; | |
1724 | ||
044bbd71 | 1725 | if ((!sym->attr.use_assoc || sym->attr.if_source != IFSRC_DECL) |
1726 | && !sym->backend_decl | |
1727 | && gsym && gsym->ns | |
1728 | && ((gsym->type == GSYM_SUBROUTINE) || (gsym->type == GSYM_FUNCTION)) | |
1729 | && (gsym->ns->proc_name->backend_decl || !sym->attr.intrinsic)) | |
83aeedb9 | 1730 | { |
d896f9b3 | 1731 | if (!gsym->ns->proc_name->backend_decl) |
1732 | { | |
1733 | /* By construction, the external function cannot be | |
1734 | a contained procedure. */ | |
1735 | locus old_loc; | |
d896f9b3 | 1736 | |
4671339c | 1737 | gfc_save_backend_locus (&old_loc); |
9078126c | 1738 | push_cfun (NULL); |
d896f9b3 | 1739 | |
1740 | gfc_create_function_decl (gsym->ns, true); | |
1741 | ||
1742 | pop_cfun (); | |
4671339c | 1743 | gfc_restore_backend_locus (&old_loc); |
d896f9b3 | 1744 | } |
1745 | ||
83aeedb9 | 1746 | /* If the namespace has entries, the proc_name is the |
1747 | entry master. Find the entry and use its backend_decl. | |
1748 | otherwise, use the proc_name backend_decl. */ | |
1749 | if (gsym->ns->entries) | |
1750 | { | |
1751 | gfc_entry_list *entry = gsym->ns->entries; | |
1752 | ||
1753 | for (; entry; entry = entry->next) | |
1754 | { | |
1755 | if (strcmp (gsym->name, entry->sym->name) == 0) | |
1756 | { | |
1757 | sym->backend_decl = entry->sym->backend_decl; | |
1758 | break; | |
1759 | } | |
1760 | } | |
1761 | } | |
1762 | else | |
40c74b02 | 1763 | sym->backend_decl = gsym->ns->proc_name->backend_decl; |
83aeedb9 | 1764 | |
1765 | if (sym->backend_decl) | |
40c74b02 | 1766 | { |
1767 | /* Avoid problems of double deallocation of the backend declaration | |
1768 | later in gfc_trans_use_stmts; cf. PR 45087. */ | |
1769 | if (sym->attr.if_source != IFSRC_DECL && sym->attr.use_assoc) | |
1770 | sym->attr.use_assoc = 0; | |
1771 | ||
1772 | return sym->backend_decl; | |
1773 | } | |
83aeedb9 | 1774 | } |
1775 | ||
7ea64434 | 1776 | /* See if this is a module procedure from the same file. If so, |
1777 | return the backend_decl. */ | |
1778 | if (sym->module) | |
1779 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
1780 | ||
c8b913ab | 1781 | module_sym: |
1782 | if (gsym && gsym->ns | |
1783 | && (gsym->type == GSYM_MODULE | |
1784 | || (gsym->ns->proc_name && gsym->ns->proc_name->attr.flavor == FL_MODULE))) | |
7ea64434 | 1785 | { |
1786 | gfc_symbol *s; | |
1787 | ||
1788 | s = NULL; | |
c8b913ab | 1789 | if (gsym->type == GSYM_MODULE) |
1790 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
1791 | else | |
1792 | gfc_find_symbol (gsym->sym_name, gsym->ns, 0, &s); | |
1793 | ||
7ea64434 | 1794 | if (s && s->backend_decl) |
1795 | { | |
85ec2f13 | 1796 | if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) |
1797 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, | |
1798 | true); | |
1799 | else if (sym->ts.type == BT_CHARACTER) | |
1800 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
7ea64434 | 1801 | sym->backend_decl = s->backend_decl; |
1802 | return sym->backend_decl; | |
1803 | } | |
1804 | } | |
1805 | ||
4ee9c684 | 1806 | if (sym->attr.intrinsic) |
1807 | { | |
1808 | /* Call the resolution function to get the actual name. This is | |
1809 | a nasty hack which relies on the resolution functions only looking | |
1810 | at the first argument. We pass NULL for the second argument | |
1811 | otherwise things like AINT get confused. */ | |
1812 | isym = gfc_find_function (sym->name); | |
22d678e8 | 1813 | gcc_assert (isym->resolve.f0 != NULL); |
4ee9c684 | 1814 | |
1815 | memset (&e, 0, sizeof (e)); | |
1816 | e.expr_type = EXPR_FUNCTION; | |
1817 | ||
1818 | memset (&argexpr, 0, sizeof (argexpr)); | |
22d678e8 | 1819 | gcc_assert (isym->formal); |
4ee9c684 | 1820 | argexpr.ts = isym->formal->ts; |
1821 | ||
1822 | if (isym->formal->next == NULL) | |
1823 | isym->resolve.f1 (&e, &argexpr); | |
1824 | else | |
1825 | { | |
37e0271a | 1826 | if (isym->formal->next->next == NULL) |
1827 | isym->resolve.f2 (&e, &argexpr, NULL); | |
1828 | else | |
1829 | { | |
7fe55cc9 | 1830 | if (isym->formal->next->next->next == NULL) |
1831 | isym->resolve.f3 (&e, &argexpr, NULL, NULL); | |
1832 | else | |
1833 | { | |
1834 | /* All specific intrinsics take less than 5 arguments. */ | |
1835 | gcc_assert (isym->formal->next->next->next->next == NULL); | |
1836 | isym->resolve.f4 (&e, &argexpr, NULL, NULL, NULL); | |
1837 | } | |
37e0271a | 1838 | } |
4ee9c684 | 1839 | } |
bdaed7d2 | 1840 | |
1841 | if (gfc_option.flag_f2c | |
1842 | && ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind) | |
1843 | || e.ts.type == BT_COMPLEX)) | |
1844 | { | |
1845 | /* Specific which needs a different implementation if f2c | |
1846 | calling conventions are used. */ | |
17000b91 | 1847 | sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name); |
bdaed7d2 | 1848 | } |
1849 | else | |
17000b91 | 1850 | sprintf (s, "_gfortran_specific%s", e.value.function.name); |
bdaed7d2 | 1851 | |
4ee9c684 | 1852 | name = get_identifier (s); |
1853 | mangled_name = name; | |
1854 | } | |
1855 | else | |
1856 | { | |
1857 | name = gfc_sym_identifier (sym); | |
1858 | mangled_name = gfc_sym_mangled_function_id (sym); | |
1859 | } | |
1860 | ||
1861 | type = gfc_get_function_type (sym); | |
e60a6f7b | 1862 | fndecl = build_decl (input_location, |
1863 | FUNCTION_DECL, name, type); | |
4ee9c684 | 1864 | |
e27454ee | 1865 | /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; |
1866 | TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
851d9296 | 1867 | the opposite of declaring a function as static in C). */ |
e27454ee | 1868 | DECL_EXTERNAL (fndecl) = 1; |
1869 | TREE_PUBLIC (fndecl) = 1; | |
1870 | ||
1236e28b | 1871 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1872 | decl_attributes (&fndecl, attributes, 0); | |
1873 | ||
1874 | gfc_set_decl_assembler_name (fndecl, mangled_name); | |
4ee9c684 | 1875 | |
1876 | /* Set the context of this decl. */ | |
1877 | if (0 && sym->ns && sym->ns->proc_name) | |
1878 | { | |
1879 | /* TODO: Add external decls to the appropriate scope. */ | |
1880 | DECL_CONTEXT (fndecl) = sym->ns->proc_name->backend_decl; | |
1881 | } | |
1882 | else | |
1883 | { | |
f888a3fb | 1884 | /* Global declaration, e.g. intrinsic subroutine. */ |
4ee9c684 | 1885 | DECL_CONTEXT (fndecl) = NULL_TREE; |
1886 | } | |
1887 | ||
4ee9c684 | 1888 | /* Set attributes for PURE functions. A call to PURE function in the |
1889 | Fortran 95 sense is both pure and without side effects in the C | |
1890 | sense. */ | |
bead0399 | 1891 | if (sym->attr.pure || sym->attr.implicit_pure) |
4ee9c684 | 1892 | { |
4d4b9f0e | 1893 | if (sym->attr.function && !gfc_return_by_reference (sym)) |
9c2a0c05 | 1894 | DECL_PURE_P (fndecl) = 1; |
be393645 | 1895 | /* TODO: check if pure SUBROUTINEs don't have INTENT(OUT) |
1896 | parameters and don't use alternate returns (is this | |
1897 | allowed?). In that case, calls to them are meaningless, and | |
1b716045 | 1898 | can be optimized away. See also in build_function_decl(). */ |
be393645 | 1899 | TREE_SIDE_EFFECTS (fndecl) = 0; |
4ee9c684 | 1900 | } |
1901 | ||
6e27d773 | 1902 | /* Mark non-returning functions. */ |
1903 | if (sym->attr.noreturn) | |
1904 | TREE_THIS_VOLATILE(fndecl) = 1; | |
1905 | ||
4ee9c684 | 1906 | sym->backend_decl = fndecl; |
1907 | ||
1908 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1909 | pushdecl_top_level (fndecl); | |
1910 | ||
15b28553 | 1911 | if (sym->formal_ns |
1912 | && sym->formal_ns->proc_name == sym | |
1913 | && sym->formal_ns->omp_declare_simd) | |
1914 | gfc_trans_omp_declare_simd (sym->formal_ns); | |
1915 | ||
4ee9c684 | 1916 | return fndecl; |
1917 | } | |
1918 | ||
1919 | ||
1920 | /* Create a declaration for a procedure. For external functions (in the C | |
1b716045 | 1921 | sense) use gfc_get_extern_function_decl. HAS_ENTRIES is true if this is |
1922 | a master function with alternate entry points. */ | |
4ee9c684 | 1923 | |
1b716045 | 1924 | static void |
d896f9b3 | 1925 | build_function_decl (gfc_symbol * sym, bool global) |
4ee9c684 | 1926 | { |
36b0a1b0 | 1927 | tree fndecl, type, attributes; |
4ee9c684 | 1928 | symbol_attribute attr; |
1b716045 | 1929 | tree result_decl; |
4ee9c684 | 1930 | gfc_formal_arglist *f; |
1931 | ||
22d678e8 | 1932 | gcc_assert (!sym->attr.external); |
4ee9c684 | 1933 | |
802532b9 | 1934 | if (sym->backend_decl) |
1935 | return; | |
1936 | ||
b31f705b | 1937 | /* Set the line and filename. sym->declared_at seems to point to the |
1938 | last statement for subroutines, but it'll do for now. */ | |
1939 | gfc_set_backend_locus (&sym->declared_at); | |
1940 | ||
4ee9c684 | 1941 | /* Allow only one nesting level. Allow public declarations. */ |
22d678e8 | 1942 | gcc_assert (current_function_decl == NULL_TREE |
16a40513 | 1943 | || DECL_FILE_SCOPE_P (current_function_decl) |
1944 | || (TREE_CODE (DECL_CONTEXT (current_function_decl)) | |
1945 | == NAMESPACE_DECL)); | |
4ee9c684 | 1946 | |
1947 | type = gfc_get_function_type (sym); | |
e60a6f7b | 1948 | fndecl = build_decl (input_location, |
1949 | FUNCTION_DECL, gfc_sym_identifier (sym), type); | |
4ee9c684 | 1950 | |
1236e28b | 1951 | attr = sym->attr; |
1952 | ||
e27454ee | 1953 | /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; |
1954 | TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
851d9296 | 1955 | the opposite of declaring a function as static in C). */ |
e27454ee | 1956 | DECL_EXTERNAL (fndecl) = 0; |
1957 | ||
7d6b5754 | 1958 | if (sym->attr.access == ACCESS_UNKNOWN && sym->module |
1959 | && (sym->ns->default_access == ACCESS_PRIVATE | |
1960 | || (sym->ns->default_access == ACCESS_UNKNOWN | |
1961 | && gfc_option.flag_module_private))) | |
1962 | sym->attr.access = ACCESS_PRIVATE; | |
1963 | ||
e27454ee | 1964 | if (!current_function_decl |
c5cb468c | 1965 | && !sym->attr.entry_master && !sym->attr.is_main_program |
b1f74325 | 1966 | && (sym->attr.access != ACCESS_PRIVATE || sym->binding_label |
1967 | || sym->attr.public_used)) | |
e27454ee | 1968 | TREE_PUBLIC (fndecl) = 1; |
1969 | ||
9e45357a | 1970 | if (sym->attr.referenced || sym->attr.entry_master) |
1971 | TREE_USED (fndecl) = 1; | |
1972 | ||
1236e28b | 1973 | attributes = add_attributes_to_decl (attr, NULL_TREE); |
1974 | decl_attributes (&fndecl, attributes, 0); | |
1975 | ||
4ee9c684 | 1976 | /* Figure out the return type of the declared function, and build a |
f888a3fb | 1977 | RESULT_DECL for it. If this is a subroutine with alternate |
4ee9c684 | 1978 | returns, build a RESULT_DECL for it. */ |
4ee9c684 | 1979 | result_decl = NULL_TREE; |
1980 | /* TODO: Shouldn't this just be TREE_TYPE (TREE_TYPE (fndecl)). */ | |
1981 | if (attr.function) | |
1982 | { | |
1983 | if (gfc_return_by_reference (sym)) | |
1984 | type = void_type_node; | |
1985 | else | |
1986 | { | |
1987 | if (sym->result != sym) | |
1988 | result_decl = gfc_sym_identifier (sym->result); | |
1989 | ||
1990 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
1991 | } | |
1992 | } | |
1993 | else | |
1994 | { | |
1995 | /* Look for alternate return placeholders. */ | |
1996 | int has_alternate_returns = 0; | |
6777213b | 1997 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
4ee9c684 | 1998 | { |
1999 | if (f->sym == NULL) | |
2000 | { | |
2001 | has_alternate_returns = 1; | |
2002 | break; | |
2003 | } | |
2004 | } | |
2005 | ||
2006 | if (has_alternate_returns) | |
2007 | type = integer_type_node; | |
2008 | else | |
2009 | type = void_type_node; | |
2010 | } | |
2011 | ||
e60a6f7b | 2012 | result_decl = build_decl (input_location, |
2013 | RESULT_DECL, result_decl, type); | |
540edea7 | 2014 | DECL_ARTIFICIAL (result_decl) = 1; |
2015 | DECL_IGNORED_P (result_decl) = 1; | |
4ee9c684 | 2016 | DECL_CONTEXT (result_decl) = fndecl; |
2017 | DECL_RESULT (fndecl) = result_decl; | |
2018 | ||
2019 | /* Don't call layout_decl for a RESULT_DECL. | |
f888a3fb | 2020 | layout_decl (result_decl, 0); */ |
4ee9c684 | 2021 | |
4ee9c684 | 2022 | /* TREE_STATIC means the function body is defined here. */ |
e4b2c26c | 2023 | TREE_STATIC (fndecl) = 1; |
4ee9c684 | 2024 | |
f888a3fb | 2025 | /* Set attributes for PURE functions. A call to a PURE function in the |
4ee9c684 | 2026 | Fortran 95 sense is both pure and without side effects in the C |
2027 | sense. */ | |
bead0399 | 2028 | if (attr.pure || attr.implicit_pure) |
4ee9c684 | 2029 | { |
be393645 | 2030 | /* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments |
a0527218 | 2031 | including an alternate return. In that case it can also be |
231e961a | 2032 | marked as PURE. See also in gfc_get_extern_function_decl(). */ |
4c319962 | 2033 | if (attr.function && !gfc_return_by_reference (sym)) |
9c2a0c05 | 2034 | DECL_PURE_P (fndecl) = 1; |
4ee9c684 | 2035 | TREE_SIDE_EFFECTS (fndecl) = 0; |
2036 | } | |
2037 | ||
36b0a1b0 | 2038 | |
4ee9c684 | 2039 | /* Layout the function declaration and put it in the binding level |
2040 | of the current function. */ | |
d896f9b3 | 2041 | |
4c197fd0 | 2042 | if (global) |
d896f9b3 | 2043 | pushdecl_top_level (fndecl); |
2044 | else | |
2045 | pushdecl (fndecl); | |
1b716045 | 2046 | |
16a40513 | 2047 | /* Perform name mangling if this is a top level or module procedure. */ |
2048 | if (current_function_decl == NULL_TREE) | |
2049 | gfc_set_decl_assembler_name (fndecl, gfc_sym_mangled_function_id (sym)); | |
2050 | ||
1b716045 | 2051 | sym->backend_decl = fndecl; |
2052 | } | |
2053 | ||
2054 | ||
2055 | /* Create the DECL_ARGUMENTS for a procedure. */ | |
2056 | ||
2057 | static void | |
2058 | create_function_arglist (gfc_symbol * sym) | |
2059 | { | |
2060 | tree fndecl; | |
2061 | gfc_formal_arglist *f; | |
d4163395 | 2062 | tree typelist, hidden_typelist; |
2063 | tree arglist, hidden_arglist; | |
1b716045 | 2064 | tree type; |
2065 | tree parm; | |
2066 | ||
2067 | fndecl = sym->backend_decl; | |
2068 | ||
e4b2c26c | 2069 | /* Build formal argument list. Make sure that their TREE_CONTEXT is |
2070 | the new FUNCTION_DECL node. */ | |
e4b2c26c | 2071 | arglist = NULL_TREE; |
d4163395 | 2072 | hidden_arglist = NULL_TREE; |
e4b2c26c | 2073 | typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
1b716045 | 2074 | |
2075 | if (sym->attr.entry_master) | |
2076 | { | |
2077 | type = TREE_VALUE (typelist); | |
e60a6f7b | 2078 | parm = build_decl (input_location, |
2079 | PARM_DECL, get_identifier ("__entry"), type); | |
a90fe829 | 2080 | |
1b716045 | 2081 | DECL_CONTEXT (parm) = fndecl; |
2082 | DECL_ARG_TYPE (parm) = type; | |
2083 | TREE_READONLY (parm) = 1; | |
b9c7fce7 | 2084 | gfc_finish_decl (parm); |
d95efb59 | 2085 | DECL_ARTIFICIAL (parm) = 1; |
1b716045 | 2086 | |
2087 | arglist = chainon (arglist, parm); | |
2088 | typelist = TREE_CHAIN (typelist); | |
2089 | } | |
2090 | ||
e4b2c26c | 2091 | if (gfc_return_by_reference (sym)) |
4ee9c684 | 2092 | { |
d4163395 | 2093 | tree type = TREE_VALUE (typelist), length = NULL; |
4ee9c684 | 2094 | |
e4b2c26c | 2095 | if (sym->ts.type == BT_CHARACTER) |
2096 | { | |
e4b2c26c | 2097 | /* Length of character result. */ |
d4163395 | 2098 | tree len_type = TREE_VALUE (TREE_CHAIN (typelist)); |
4ee9c684 | 2099 | |
e60a6f7b | 2100 | length = build_decl (input_location, |
2101 | PARM_DECL, | |
e4b2c26c | 2102 | get_identifier (".__result"), |
d4163395 | 2103 | len_type); |
eeebe20b | 2104 | if (!sym->ts.u.cl->length) |
e4b2c26c | 2105 | { |
eeebe20b | 2106 | sym->ts.u.cl->backend_decl = length; |
e4b2c26c | 2107 | TREE_USED (length) = 1; |
4ee9c684 | 2108 | } |
22d678e8 | 2109 | gcc_assert (TREE_CODE (length) == PARM_DECL); |
e4b2c26c | 2110 | DECL_CONTEXT (length) = fndecl; |
d4163395 | 2111 | DECL_ARG_TYPE (length) = len_type; |
e4b2c26c | 2112 | TREE_READONLY (length) = 1; |
b5b40b3f | 2113 | DECL_ARTIFICIAL (length) = 1; |
b9c7fce7 | 2114 | gfc_finish_decl (length); |
eeebe20b | 2115 | if (sym->ts.u.cl->backend_decl == NULL |
2116 | || sym->ts.u.cl->backend_decl == length) | |
d4163395 | 2117 | { |
2118 | gfc_symbol *arg; | |
2119 | tree backend_decl; | |
4ee9c684 | 2120 | |
eeebe20b | 2121 | if (sym->ts.u.cl->backend_decl == NULL) |
d4163395 | 2122 | { |
e60a6f7b | 2123 | tree len = build_decl (input_location, |
2124 | VAR_DECL, | |
d4163395 | 2125 | get_identifier ("..__result"), |
2126 | gfc_charlen_type_node); | |
2127 | DECL_ARTIFICIAL (len) = 1; | |
2128 | TREE_USED (len) = 1; | |
eeebe20b | 2129 | sym->ts.u.cl->backend_decl = len; |
d4163395 | 2130 | } |
4ee9c684 | 2131 | |
d4163395 | 2132 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ |
2133 | arg = sym->result ? sym->result : sym; | |
2134 | backend_decl = arg->backend_decl; | |
2135 | /* Temporary clear it, so that gfc_sym_type creates complete | |
2136 | type. */ | |
2137 | arg->backend_decl = NULL; | |
2138 | type = gfc_sym_type (arg); | |
2139 | arg->backend_decl = backend_decl; | |
2140 | type = build_reference_type (type); | |
2141 | } | |
2142 | } | |
4ee9c684 | 2143 | |
e60a6f7b | 2144 | parm = build_decl (input_location, |
2145 | PARM_DECL, get_identifier ("__result"), type); | |
4ee9c684 | 2146 | |
d4163395 | 2147 | DECL_CONTEXT (parm) = fndecl; |
2148 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2149 | TREE_READONLY (parm) = 1; | |
2150 | DECL_ARTIFICIAL (parm) = 1; | |
b9c7fce7 | 2151 | gfc_finish_decl (parm); |
4ee9c684 | 2152 | |
d4163395 | 2153 | arglist = chainon (arglist, parm); |
2154 | typelist = TREE_CHAIN (typelist); | |
4ee9c684 | 2155 | |
d4163395 | 2156 | if (sym->ts.type == BT_CHARACTER) |
2157 | { | |
2158 | gfc_allocate_lang_decl (parm); | |
2159 | arglist = chainon (arglist, length); | |
e4b2c26c | 2160 | typelist = TREE_CHAIN (typelist); |
2161 | } | |
2162 | } | |
4ee9c684 | 2163 | |
d4163395 | 2164 | hidden_typelist = typelist; |
6777213b | 2165 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
d4163395 | 2166 | if (f->sym != NULL) /* Ignore alternate returns. */ |
2167 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2168 | ||
6777213b | 2169 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
e4b2c26c | 2170 | { |
2171 | char name[GFC_MAX_SYMBOL_LEN + 2]; | |
d4163395 | 2172 | |
e4b2c26c | 2173 | /* Ignore alternate returns. */ |
2174 | if (f->sym == NULL) | |
2175 | continue; | |
4ee9c684 | 2176 | |
e4b2c26c | 2177 | type = TREE_VALUE (typelist); |
4ee9c684 | 2178 | |
296db1d1 | 2179 | if (f->sym->ts.type == BT_CHARACTER |
2180 | && (!sym->attr.is_bind_c || sym->attr.entry_master)) | |
d4163395 | 2181 | { |
2182 | tree len_type = TREE_VALUE (hidden_typelist); | |
2183 | tree length = NULL_TREE; | |
617125a6 | 2184 | if (!f->sym->ts.deferred) |
2185 | gcc_assert (len_type == gfc_charlen_type_node); | |
2186 | else | |
2187 | gcc_assert (POINTER_TYPE_P (len_type)); | |
d4163395 | 2188 | |
2189 | strcpy (&name[1], f->sym->name); | |
2190 | name[0] = '_'; | |
e60a6f7b | 2191 | length = build_decl (input_location, |
2192 | PARM_DECL, get_identifier (name), len_type); | |
4ee9c684 | 2193 | |
d4163395 | 2194 | hidden_arglist = chainon (hidden_arglist, length); |
2195 | DECL_CONTEXT (length) = fndecl; | |
2196 | DECL_ARTIFICIAL (length) = 1; | |
2197 | DECL_ARG_TYPE (length) = len_type; | |
2198 | TREE_READONLY (length) = 1; | |
b9c7fce7 | 2199 | gfc_finish_decl (length); |
4ee9c684 | 2200 | |
a4abf8a0 | 2201 | /* Remember the passed value. */ |
a90fe829 | 2202 | if (!f->sym->ts.u.cl || f->sym->ts.u.cl->passed_length) |
6be7c32c | 2203 | { |
2204 | /* This can happen if the same type is used for multiple | |
2205 | arguments. We need to copy cl as otherwise | |
2206 | cl->passed_length gets overwritten. */ | |
d270ce52 | 2207 | f->sym->ts.u.cl = gfc_new_charlen (f->sym->ns, f->sym->ts.u.cl); |
6be7c32c | 2208 | } |
eeebe20b | 2209 | f->sym->ts.u.cl->passed_length = length; |
4ee9c684 | 2210 | |
d4163395 | 2211 | /* Use the passed value for assumed length variables. */ |
eeebe20b | 2212 | if (!f->sym->ts.u.cl->length) |
4ee9c684 | 2213 | { |
d4163395 | 2214 | TREE_USED (length) = 1; |
eeebe20b | 2215 | gcc_assert (!f->sym->ts.u.cl->backend_decl); |
2216 | f->sym->ts.u.cl->backend_decl = length; | |
d4163395 | 2217 | } |
2218 | ||
2219 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2220 | ||
eeebe20b | 2221 | if (f->sym->ts.u.cl->backend_decl == NULL |
2222 | || f->sym->ts.u.cl->backend_decl == length) | |
d4163395 | 2223 | { |
eeebe20b | 2224 | if (f->sym->ts.u.cl->backend_decl == NULL) |
d4163395 | 2225 | gfc_create_string_length (f->sym); |
2226 | ||
2227 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ | |
2228 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
2229 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2230 | else | |
2231 | type = gfc_sym_type (f->sym); | |
4ee9c684 | 2232 | } |
4ee9c684 | 2233 | } |
532c2d79 | 2234 | /* For noncharacter scalar intrinsic types, VALUE passes the value, |
1cdfcee9 | 2235 | hence, the optional status cannot be transferred via a NULL pointer. |
532c2d79 | 2236 | Thus, we will use a hidden argument in that case. */ |
2237 | else if (f->sym->attr.optional && f->sym->attr.value | |
68cc384e | 2238 | && !f->sym->attr.dimension && f->sym->ts.type != BT_CLASS |
532c2d79 | 2239 | && f->sym->ts.type != BT_DERIVED) |
2240 | { | |
2241 | tree tmp; | |
2242 | strcpy (&name[1], f->sym->name); | |
2243 | name[0] = '_'; | |
2244 | tmp = build_decl (input_location, | |
2245 | PARM_DECL, get_identifier (name), | |
2246 | boolean_type_node); | |
2247 | ||
2248 | hidden_arglist = chainon (hidden_arglist, tmp); | |
2249 | DECL_CONTEXT (tmp) = fndecl; | |
2250 | DECL_ARTIFICIAL (tmp) = 1; | |
2251 | DECL_ARG_TYPE (tmp) = boolean_type_node; | |
2252 | TREE_READONLY (tmp) = 1; | |
2253 | gfc_finish_decl (tmp); | |
2254 | } | |
4ee9c684 | 2255 | |
d4163395 | 2256 | /* For non-constant length array arguments, make sure they use |
2257 | a different type node from TYPE_ARG_TYPES type. */ | |
2258 | if (f->sym->attr.dimension | |
2259 | && type == TREE_VALUE (typelist) | |
2260 | && TREE_CODE (type) == POINTER_TYPE | |
2261 | && GFC_ARRAY_TYPE_P (type) | |
2262 | && f->sym->as->type != AS_ASSUMED_SIZE | |
2263 | && ! COMPLETE_TYPE_P (TREE_TYPE (type))) | |
2264 | { | |
2265 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
2266 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2267 | else | |
2268 | type = gfc_sym_type (f->sym); | |
2269 | } | |
2270 | ||
cad0ddcf | 2271 | if (f->sym->attr.proc_pointer) |
2272 | type = build_pointer_type (type); | |
2273 | ||
2364aa60 | 2274 | if (f->sym->attr.volatile_) |
2275 | type = build_qualified_type (type, TYPE_QUAL_VOLATILE); | |
2276 | ||
69b1505f | 2277 | /* Build the argument declaration. */ |
e60a6f7b | 2278 | parm = build_decl (input_location, |
2279 | PARM_DECL, gfc_sym_identifier (f->sym), type); | |
d4163395 | 2280 | |
2364aa60 | 2281 | if (f->sym->attr.volatile_) |
2282 | { | |
2283 | TREE_THIS_VOLATILE (parm) = 1; | |
2284 | TREE_SIDE_EFFECTS (parm) = 1; | |
2285 | } | |
2286 | ||
d4163395 | 2287 | /* Fill in arg stuff. */ |
2288 | DECL_CONTEXT (parm) = fndecl; | |
2289 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2290 | /* All implementation args are read-only. */ | |
2291 | TREE_READONLY (parm) = 1; | |
98923a84 | 2292 | if (POINTER_TYPE_P (type) |
2293 | && (!f->sym->attr.proc_pointer | |
2294 | && f->sym->attr.flavor != FL_PROCEDURE)) | |
2295 | DECL_BY_REFERENCE (parm) = 1; | |
d4163395 | 2296 | |
b9c7fce7 | 2297 | gfc_finish_decl (parm); |
cf5f881f | 2298 | gfc_finish_decl_attrs (parm, &f->sym->attr); |
d4163395 | 2299 | |
2300 | f->sym->backend_decl = parm; | |
2301 | ||
7dce33fe | 2302 | /* Coarrays which are descriptorless or assumed-shape pass with |
2303 | -fcoarray=lib the token and the offset as hidden arguments. */ | |
d44f2f7c | 2304 | if (gfc_option.coarray == GFC_FCOARRAY_LIB |
2305 | && ((f->sym->ts.type != BT_CLASS && f->sym->attr.codimension | |
2306 | && !f->sym->attr.allocatable) | |
2307 | || (f->sym->ts.type == BT_CLASS | |
2308 | && CLASS_DATA (f->sym)->attr.codimension | |
2309 | && !CLASS_DATA (f->sym)->attr.allocatable))) | |
85c94a64 | 2310 | { |
2311 | tree caf_type; | |
2312 | tree token; | |
2313 | tree offset; | |
2314 | ||
2315 | gcc_assert (f->sym->backend_decl != NULL_TREE | |
2316 | && !sym->attr.is_bind_c); | |
d44f2f7c | 2317 | caf_type = f->sym->ts.type == BT_CLASS |
2318 | ? TREE_TYPE (CLASS_DATA (f->sym)->backend_decl) | |
2319 | : TREE_TYPE (f->sym->backend_decl); | |
85c94a64 | 2320 | |
85c94a64 | 2321 | token = build_decl (input_location, PARM_DECL, |
2322 | create_tmp_var_name ("caf_token"), | |
2323 | build_qualified_type (pvoid_type_node, | |
2324 | TYPE_QUAL_RESTRICT)); | |
d44f2f7c | 2325 | if ((f->sym->ts.type != BT_CLASS |
2326 | && f->sym->as->type != AS_DEFERRED) | |
2327 | || (f->sym->ts.type == BT_CLASS | |
2328 | && CLASS_DATA (f->sym)->as->type != AS_DEFERRED)) | |
7dce33fe | 2329 | { |
2330 | gcc_assert (DECL_LANG_SPECIFIC (f->sym->backend_decl) == NULL | |
2331 | || GFC_DECL_TOKEN (f->sym->backend_decl) == NULL_TREE); | |
2332 | if (DECL_LANG_SPECIFIC (f->sym->backend_decl) == NULL) | |
2333 | gfc_allocate_lang_decl (f->sym->backend_decl); | |
2334 | GFC_DECL_TOKEN (f->sym->backend_decl) = token; | |
2335 | } | |
2336 | else | |
2337 | { | |
2338 | gcc_assert (GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) == NULL_TREE); | |
2339 | GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) = token; | |
2340 | } | |
a90fe829 | 2341 | |
85c94a64 | 2342 | DECL_CONTEXT (token) = fndecl; |
2343 | DECL_ARTIFICIAL (token) = 1; | |
2344 | DECL_ARG_TYPE (token) = TREE_VALUE (typelist); | |
2345 | TREE_READONLY (token) = 1; | |
2346 | hidden_arglist = chainon (hidden_arglist, token); | |
2347 | gfc_finish_decl (token); | |
2348 | ||
85c94a64 | 2349 | offset = build_decl (input_location, PARM_DECL, |
2350 | create_tmp_var_name ("caf_offset"), | |
2351 | gfc_array_index_type); | |
2352 | ||
d44f2f7c | 2353 | if ((f->sym->ts.type != BT_CLASS |
2354 | && f->sym->as->type != AS_DEFERRED) | |
2355 | || (f->sym->ts.type == BT_CLASS | |
2356 | && CLASS_DATA (f->sym)->as->type != AS_DEFERRED)) | |
7dce33fe | 2357 | { |
2358 | gcc_assert (GFC_DECL_CAF_OFFSET (f->sym->backend_decl) | |
2359 | == NULL_TREE); | |
2360 | GFC_DECL_CAF_OFFSET (f->sym->backend_decl) = offset; | |
2361 | } | |
2362 | else | |
2363 | { | |
2364 | gcc_assert (GFC_TYPE_ARRAY_CAF_OFFSET (caf_type) == NULL_TREE); | |
2365 | GFC_TYPE_ARRAY_CAF_OFFSET (caf_type) = offset; | |
2366 | } | |
85c94a64 | 2367 | DECL_CONTEXT (offset) = fndecl; |
2368 | DECL_ARTIFICIAL (offset) = 1; | |
2369 | DECL_ARG_TYPE (offset) = TREE_VALUE (typelist); | |
2370 | TREE_READONLY (offset) = 1; | |
2371 | hidden_arglist = chainon (hidden_arglist, offset); | |
2372 | gfc_finish_decl (offset); | |
2373 | } | |
2374 | ||
d4163395 | 2375 | arglist = chainon (arglist, parm); |
e4b2c26c | 2376 | typelist = TREE_CHAIN (typelist); |
4ee9c684 | 2377 | } |
e4b2c26c | 2378 | |
465e4a95 | 2379 | /* Add the hidden string length parameters, unless the procedure |
2380 | is bind(C). */ | |
2381 | if (!sym->attr.is_bind_c) | |
2382 | arglist = chainon (arglist, hidden_arglist); | |
d4163395 | 2383 | |
ebe27ea2 | 2384 | gcc_assert (hidden_typelist == NULL_TREE |
2385 | || TREE_VALUE (hidden_typelist) == void_type_node); | |
e4b2c26c | 2386 | DECL_ARGUMENTS (fndecl) = arglist; |
1b716045 | 2387 | } |
e4b2c26c | 2388 | |
1b716045 | 2389 | /* Do the setup necessary before generating the body of a function. */ |
2390 | ||
2391 | static void | |
2392 | trans_function_start (gfc_symbol * sym) | |
2393 | { | |
2394 | tree fndecl; | |
2395 | ||
2396 | fndecl = sym->backend_decl; | |
2397 | ||
f888a3fb | 2398 | /* Let GCC know the current scope is this function. */ |
1b716045 | 2399 | current_function_decl = fndecl; |
2400 | ||
f888a3fb | 2401 | /* Let the world know what we're about to do. */ |
1b716045 | 2402 | announce_function (fndecl); |
2403 | ||
16a40513 | 2404 | if (DECL_FILE_SCOPE_P (fndecl)) |
1b716045 | 2405 | { |
f888a3fb | 2406 | /* Create RTL for function declaration. */ |
1b716045 | 2407 | rest_of_decl_compilation (fndecl, 1, 0); |
2408 | } | |
2409 | ||
f888a3fb | 2410 | /* Create RTL for function definition. */ |
1b716045 | 2411 | make_decl_rtl (fndecl); |
2412 | ||
00cf115c | 2413 | allocate_struct_function (fndecl, false); |
1b716045 | 2414 | |
f888a3fb | 2415 | /* function.c requires a push at the start of the function. */ |
cde2be84 | 2416 | pushlevel (); |
1b716045 | 2417 | } |
2418 | ||
2419 | /* Create thunks for alternate entry points. */ | |
2420 | ||
2421 | static void | |
d896f9b3 | 2422 | build_entry_thunks (gfc_namespace * ns, bool global) |
1b716045 | 2423 | { |
2424 | gfc_formal_arglist *formal; | |
2425 | gfc_formal_arglist *thunk_formal; | |
2426 | gfc_entry_list *el; | |
2427 | gfc_symbol *thunk_sym; | |
2428 | stmtblock_t body; | |
2429 | tree thunk_fndecl; | |
1b716045 | 2430 | tree tmp; |
b31f705b | 2431 | locus old_loc; |
1b716045 | 2432 | |
2433 | /* This should always be a toplevel function. */ | |
22d678e8 | 2434 | gcc_assert (current_function_decl == NULL_TREE); |
1b716045 | 2435 | |
4671339c | 2436 | gfc_save_backend_locus (&old_loc); |
1b716045 | 2437 | for (el = ns->entries; el; el = el->next) |
2438 | { | |
f1f41a6c | 2439 | vec<tree, va_gc> *args = NULL; |
2440 | vec<tree, va_gc> *string_args = NULL; | |
414c3a2c | 2441 | |
1b716045 | 2442 | thunk_sym = el->sym; |
a90fe829 | 2443 | |
d896f9b3 | 2444 | build_function_decl (thunk_sym, global); |
1b716045 | 2445 | create_function_arglist (thunk_sym); |
2446 | ||
2447 | trans_function_start (thunk_sym); | |
2448 | ||
2449 | thunk_fndecl = thunk_sym->backend_decl; | |
2450 | ||
e5004242 | 2451 | gfc_init_block (&body); |
1b716045 | 2452 | |
f888a3fb | 2453 | /* Pass extra parameter identifying this entry point. */ |
7016c612 | 2454 | tmp = build_int_cst (gfc_array_index_type, el->id); |
f1f41a6c | 2455 | vec_safe_push (args, tmp); |
1b716045 | 2456 | |
c6871095 | 2457 | if (thunk_sym->attr.function) |
2458 | { | |
2459 | if (gfc_return_by_reference (ns->proc_name)) | |
2460 | { | |
2461 | tree ref = DECL_ARGUMENTS (current_function_decl); | |
f1f41a6c | 2462 | vec_safe_push (args, ref); |
c6871095 | 2463 | if (ns->proc_name->ts.type == BT_CHARACTER) |
f1f41a6c | 2464 | vec_safe_push (args, DECL_CHAIN (ref)); |
c6871095 | 2465 | } |
2466 | } | |
2467 | ||
6777213b | 2468 | for (formal = gfc_sym_get_dummy_args (ns->proc_name); formal; |
2469 | formal = formal->next) | |
1b716045 | 2470 | { |
c6871095 | 2471 | /* Ignore alternate returns. */ |
2472 | if (formal->sym == NULL) | |
2473 | continue; | |
2474 | ||
1b716045 | 2475 | /* We don't have a clever way of identifying arguments, so resort to |
2476 | a brute-force search. */ | |
6777213b | 2477 | for (thunk_formal = gfc_sym_get_dummy_args (thunk_sym); |
1b716045 | 2478 | thunk_formal; |
2479 | thunk_formal = thunk_formal->next) | |
2480 | { | |
2481 | if (thunk_formal->sym == formal->sym) | |
2482 | break; | |
2483 | } | |
2484 | ||
2485 | if (thunk_formal) | |
2486 | { | |
2487 | /* Pass the argument. */ | |
d95efb59 | 2488 | DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1; |
f1f41a6c | 2489 | vec_safe_push (args, thunk_formal->sym->backend_decl); |
1b716045 | 2490 | if (formal->sym->ts.type == BT_CHARACTER) |
2491 | { | |
eeebe20b | 2492 | tmp = thunk_formal->sym->ts.u.cl->backend_decl; |
f1f41a6c | 2493 | vec_safe_push (string_args, tmp); |
1b716045 | 2494 | } |
2495 | } | |
2496 | else | |
2497 | { | |
2498 | /* Pass NULL for a missing argument. */ | |
f1f41a6c | 2499 | vec_safe_push (args, null_pointer_node); |
1b716045 | 2500 | if (formal->sym->ts.type == BT_CHARACTER) |
2501 | { | |
7d3075f6 | 2502 | tmp = build_int_cst (gfc_charlen_type_node, 0); |
f1f41a6c | 2503 | vec_safe_push (string_args, tmp); |
1b716045 | 2504 | } |
2505 | } | |
2506 | } | |
2507 | ||
2508 | /* Call the master function. */ | |
f1f41a6c | 2509 | vec_safe_splice (args, string_args); |
1b716045 | 2510 | tmp = ns->proc_name->backend_decl; |
414c3a2c | 2511 | tmp = build_call_expr_loc_vec (input_location, tmp, args); |
c6871095 | 2512 | if (ns->proc_name->attr.mixed_entry_master) |
2513 | { | |
2514 | tree union_decl, field; | |
2515 | tree master_type = TREE_TYPE (ns->proc_name->backend_decl); | |
2516 | ||
e60a6f7b | 2517 | union_decl = build_decl (input_location, |
2518 | VAR_DECL, get_identifier ("__result"), | |
c6871095 | 2519 | TREE_TYPE (master_type)); |
2520 | DECL_ARTIFICIAL (union_decl) = 1; | |
2521 | DECL_EXTERNAL (union_decl) = 0; | |
2522 | TREE_PUBLIC (union_decl) = 0; | |
2523 | TREE_USED (union_decl) = 1; | |
2524 | layout_decl (union_decl, 0); | |
2525 | pushdecl (union_decl); | |
2526 | ||
2527 | DECL_CONTEXT (union_decl) = current_function_decl; | |
fd779e1d | 2528 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
2529 | TREE_TYPE (union_decl), union_decl, tmp); | |
c6871095 | 2530 | gfc_add_expr_to_block (&body, tmp); |
2531 | ||
2532 | for (field = TYPE_FIELDS (TREE_TYPE (union_decl)); | |
1767a056 | 2533 | field; field = DECL_CHAIN (field)) |
c6871095 | 2534 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2535 | thunk_sym->result->name) == 0) | |
2536 | break; | |
2537 | gcc_assert (field != NULL_TREE); | |
fd779e1d | 2538 | tmp = fold_build3_loc (input_location, COMPONENT_REF, |
2539 | TREE_TYPE (field), union_decl, field, | |
2540 | NULL_TREE); | |
a90fe829 | 2541 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
f75d6b8a | 2542 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2543 | DECL_RESULT (current_function_decl), tmp); | |
c6871095 | 2544 | tmp = build1_v (RETURN_EXPR, tmp); |
2545 | } | |
2546 | else if (TREE_TYPE (DECL_RESULT (current_function_decl)) | |
2547 | != void_type_node) | |
2548 | { | |
fd779e1d | 2549 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
f75d6b8a | 2550 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2551 | DECL_RESULT (current_function_decl), tmp); | |
c6871095 | 2552 | tmp = build1_v (RETURN_EXPR, tmp); |
2553 | } | |
1b716045 | 2554 | gfc_add_expr_to_block (&body, tmp); |
2555 | ||
2556 | /* Finish off this function and send it for code generation. */ | |
2557 | DECL_SAVED_TREE (thunk_fndecl) = gfc_finish_block (&body); | |
e5004242 | 2558 | tmp = getdecls (); |
cde2be84 | 2559 | poplevel (1, 1); |
1b716045 | 2560 | BLOCK_SUPERCONTEXT (DECL_INITIAL (thunk_fndecl)) = thunk_fndecl; |
e5004242 | 2561 | DECL_SAVED_TREE (thunk_fndecl) |
2562 | = build3_v (BIND_EXPR, tmp, DECL_SAVED_TREE (thunk_fndecl), | |
2563 | DECL_INITIAL (thunk_fndecl)); | |
1b716045 | 2564 | |
2565 | /* Output the GENERIC tree. */ | |
2566 | dump_function (TDI_original, thunk_fndecl); | |
2567 | ||
2568 | /* Store the end of the function, so that we get good line number | |
2569 | info for the epilogue. */ | |
2570 | cfun->function_end_locus = input_location; | |
2571 | ||
2572 | /* We're leaving the context of this function, so zap cfun. | |
2573 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
2574 | tree_rest_of_compilation. */ | |
87d4aa85 | 2575 | set_cfun (NULL); |
1b716045 | 2576 | |
2577 | current_function_decl = NULL_TREE; | |
2578 | ||
35ee1c66 | 2579 | cgraph_node::finalize_function (thunk_fndecl, true); |
1b716045 | 2580 | |
2581 | /* We share the symbols in the formal argument list with other entry | |
2582 | points and the master function. Clear them so that they are | |
2583 | recreated for each function. */ | |
6777213b | 2584 | for (formal = gfc_sym_get_dummy_args (thunk_sym); formal; |
2585 | formal = formal->next) | |
c6871095 | 2586 | if (formal->sym != NULL) /* Ignore alternate returns. */ |
2587 | { | |
2588 | formal->sym->backend_decl = NULL_TREE; | |
2589 | if (formal->sym->ts.type == BT_CHARACTER) | |
eeebe20b | 2590 | formal->sym->ts.u.cl->backend_decl = NULL_TREE; |
c6871095 | 2591 | } |
2592 | ||
2593 | if (thunk_sym->attr.function) | |
1b716045 | 2594 | { |
c6871095 | 2595 | if (thunk_sym->ts.type == BT_CHARACTER) |
eeebe20b | 2596 | thunk_sym->ts.u.cl->backend_decl = NULL_TREE; |
c6871095 | 2597 | if (thunk_sym->result->ts.type == BT_CHARACTER) |
eeebe20b | 2598 | thunk_sym->result->ts.u.cl->backend_decl = NULL_TREE; |
1b716045 | 2599 | } |
2600 | } | |
b31f705b | 2601 | |
4671339c | 2602 | gfc_restore_backend_locus (&old_loc); |
1b716045 | 2603 | } |
2604 | ||
2605 | ||
2606 | /* Create a decl for a function, and create any thunks for alternate entry | |
d896f9b3 | 2607 | points. If global is true, generate the function in the global binding |
2608 | level, otherwise in the current binding level (which can be global). */ | |
1b716045 | 2609 | |
2610 | void | |
d896f9b3 | 2611 | gfc_create_function_decl (gfc_namespace * ns, bool global) |
1b716045 | 2612 | { |
2613 | /* Create a declaration for the master function. */ | |
d896f9b3 | 2614 | build_function_decl (ns->proc_name, global); |
1b716045 | 2615 | |
f888a3fb | 2616 | /* Compile the entry thunks. */ |
1b716045 | 2617 | if (ns->entries) |
d896f9b3 | 2618 | build_entry_thunks (ns, global); |
1b716045 | 2619 | |
2620 | /* Now create the read argument list. */ | |
2621 | create_function_arglist (ns->proc_name); | |
15b28553 | 2622 | |
2623 | if (ns->omp_declare_simd) | |
2624 | gfc_trans_omp_declare_simd (ns); | |
1b716045 | 2625 | } |
2626 | ||
c750cc52 | 2627 | /* Return the decl used to hold the function return value. If |
3350e716 | 2628 | parent_flag is set, the context is the parent_scope. */ |
4ee9c684 | 2629 | |
2630 | tree | |
c750cc52 | 2631 | gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag) |
4ee9c684 | 2632 | { |
c750cc52 | 2633 | tree decl; |
2634 | tree length; | |
2635 | tree this_fake_result_decl; | |
2636 | tree this_function_decl; | |
4ee9c684 | 2637 | |
2638 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
2639 | ||
c750cc52 | 2640 | if (parent_flag) |
2641 | { | |
2642 | this_fake_result_decl = parent_fake_result_decl; | |
2643 | this_function_decl = DECL_CONTEXT (current_function_decl); | |
2644 | } | |
2645 | else | |
2646 | { | |
2647 | this_fake_result_decl = current_fake_result_decl; | |
2648 | this_function_decl = current_function_decl; | |
2649 | } | |
2650 | ||
c6871095 | 2651 | if (sym |
c750cc52 | 2652 | && sym->ns->proc_name->backend_decl == this_function_decl |
d4163395 | 2653 | && sym->ns->proc_name->attr.entry_master |
c6871095 | 2654 | && sym != sym->ns->proc_name) |
2655 | { | |
d4163395 | 2656 | tree t = NULL, var; |
c750cc52 | 2657 | if (this_fake_result_decl != NULL) |
2658 | for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t)) | |
d4163395 | 2659 | if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0) |
2660 | break; | |
2661 | if (t) | |
2662 | return TREE_VALUE (t); | |
c750cc52 | 2663 | decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag); |
2664 | ||
2665 | if (parent_flag) | |
2666 | this_fake_result_decl = parent_fake_result_decl; | |
2667 | else | |
2668 | this_fake_result_decl = current_fake_result_decl; | |
2669 | ||
d4163395 | 2670 | if (decl && sym->ns->proc_name->attr.mixed_entry_master) |
c6871095 | 2671 | { |
2672 | tree field; | |
2673 | ||
2674 | for (field = TYPE_FIELDS (TREE_TYPE (decl)); | |
1767a056 | 2675 | field; field = DECL_CHAIN (field)) |
c6871095 | 2676 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2677 | sym->name) == 0) | |
2678 | break; | |
2679 | ||
2680 | gcc_assert (field != NULL_TREE); | |
fd779e1d | 2681 | decl = fold_build3_loc (input_location, COMPONENT_REF, |
2682 | TREE_TYPE (field), decl, field, NULL_TREE); | |
c6871095 | 2683 | } |
c750cc52 | 2684 | |
2685 | var = create_tmp_var_raw (TREE_TYPE (decl), sym->name); | |
2686 | if (parent_flag) | |
2687 | gfc_add_decl_to_parent_function (var); | |
2688 | else | |
2689 | gfc_add_decl_to_function (var); | |
2690 | ||
d4163395 | 2691 | SET_DECL_VALUE_EXPR (var, decl); |
2692 | DECL_HAS_VALUE_EXPR_P (var) = 1; | |
2cf330c4 | 2693 | GFC_DECL_RESULT (var) = 1; |
c750cc52 | 2694 | |
2695 | TREE_CHAIN (this_fake_result_decl) | |
2696 | = tree_cons (get_identifier (sym->name), var, | |
2697 | TREE_CHAIN (this_fake_result_decl)); | |
d4163395 | 2698 | return var; |
c6871095 | 2699 | } |
2700 | ||
c750cc52 | 2701 | if (this_fake_result_decl != NULL_TREE) |
2702 | return TREE_VALUE (this_fake_result_decl); | |
4ee9c684 | 2703 | |
2704 | /* Only when gfc_get_fake_result_decl is called by gfc_trans_return, | |
2705 | sym is NULL. */ | |
2706 | if (!sym) | |
2707 | return NULL_TREE; | |
2708 | ||
d4163395 | 2709 | if (sym->ts.type == BT_CHARACTER) |
4ee9c684 | 2710 | { |
eeebe20b | 2711 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
d4163395 | 2712 | length = gfc_create_string_length (sym); |
2713 | else | |
eeebe20b | 2714 | length = sym->ts.u.cl->backend_decl; |
d4163395 | 2715 | if (TREE_CODE (length) == VAR_DECL |
2716 | && DECL_CONTEXT (length) == NULL_TREE) | |
99042714 | 2717 | gfc_add_decl_to_function (length); |
4ee9c684 | 2718 | } |
2719 | ||
2720 | if (gfc_return_by_reference (sym)) | |
2721 | { | |
c750cc52 | 2722 | decl = DECL_ARGUMENTS (this_function_decl); |
c6871095 | 2723 | |
c750cc52 | 2724 | if (sym->ns->proc_name->backend_decl == this_function_decl |
c6871095 | 2725 | && sym->ns->proc_name->attr.entry_master) |
1767a056 | 2726 | decl = DECL_CHAIN (decl); |
4ee9c684 | 2727 | |
2728 | TREE_USED (decl) = 1; | |
2729 | if (sym->as) | |
2730 | decl = gfc_build_dummy_array_decl (sym, decl); | |
2731 | } | |
2732 | else | |
2733 | { | |
2734 | sprintf (name, "__result_%.20s", | |
c750cc52 | 2735 | IDENTIFIER_POINTER (DECL_NAME (this_function_decl))); |
4ee9c684 | 2736 | |
3350e716 | 2737 | if (!sym->attr.mixed_entry_master && sym->attr.function) |
1e71b314 | 2738 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
e60a6f7b | 2739 | VAR_DECL, get_identifier (name), |
3350e716 | 2740 | gfc_sym_type (sym)); |
2741 | else | |
1e71b314 | 2742 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
e60a6f7b | 2743 | VAR_DECL, get_identifier (name), |
3350e716 | 2744 | TREE_TYPE (TREE_TYPE (this_function_decl))); |
4ee9c684 | 2745 | DECL_ARTIFICIAL (decl) = 1; |
2746 | DECL_EXTERNAL (decl) = 0; | |
2747 | TREE_PUBLIC (decl) = 0; | |
2748 | TREE_USED (decl) = 1; | |
764f1175 | 2749 | GFC_DECL_RESULT (decl) = 1; |
a379e3a9 | 2750 | TREE_ADDRESSABLE (decl) = 1; |
4ee9c684 | 2751 | |
2752 | layout_decl (decl, 0); | |
cf5f881f | 2753 | gfc_finish_decl_attrs (decl, &sym->attr); |
4ee9c684 | 2754 | |
c750cc52 | 2755 | if (parent_flag) |
2756 | gfc_add_decl_to_parent_function (decl); | |
2757 | else | |
2758 | gfc_add_decl_to_function (decl); | |
4ee9c684 | 2759 | } |
2760 | ||
c750cc52 | 2761 | if (parent_flag) |
2762 | parent_fake_result_decl = build_tree_list (NULL, decl); | |
2763 | else | |
2764 | current_fake_result_decl = build_tree_list (NULL, decl); | |
4ee9c684 | 2765 | |
2766 | return decl; | |
2767 | } | |
2768 | ||
2769 | ||
2770 | /* Builds a function decl. The remaining parameters are the types of the | |
2771 | function arguments. Negative nargs indicates a varargs function. */ | |
2772 | ||
8ce86007 | 2773 | static tree |
2774 | build_library_function_decl_1 (tree name, const char *spec, | |
2775 | tree rettype, int nargs, va_list p) | |
4ee9c684 | 2776 | { |
f1f41a6c | 2777 | vec<tree, va_gc> *arglist; |
4ee9c684 | 2778 | tree fntype; |
2779 | tree fndecl; | |
4ee9c684 | 2780 | int n; |
2781 | ||
2782 | /* Library functions must be declared with global scope. */ | |
22d678e8 | 2783 | gcc_assert (current_function_decl == NULL_TREE); |
4ee9c684 | 2784 | |
4ee9c684 | 2785 | /* Create a list of the argument types. */ |
f1f41a6c | 2786 | vec_alloc (arglist, abs (nargs)); |
5edc3af9 | 2787 | for (n = abs (nargs); n > 0; n--) |
4ee9c684 | 2788 | { |
5edc3af9 | 2789 | tree argtype = va_arg (p, tree); |
f1f41a6c | 2790 | arglist->quick_push (argtype); |
4ee9c684 | 2791 | } |
2792 | ||
2793 | /* Build the function type and decl. */ | |
5edc3af9 | 2794 | if (nargs >= 0) |
2795 | fntype = build_function_type_vec (rettype, arglist); | |
2796 | else | |
2797 | fntype = build_varargs_function_type_vec (rettype, arglist); | |
8ce86007 | 2798 | if (spec) |
2799 | { | |
2800 | tree attr_args = build_tree_list (NULL_TREE, | |
2801 | build_string (strlen (spec), spec)); | |
2802 | tree attrs = tree_cons (get_identifier ("fn spec"), | |
2803 | attr_args, TYPE_ATTRIBUTES (fntype)); | |
2804 | fntype = build_type_attribute_variant (fntype, attrs); | |
2805 | } | |
e60a6f7b | 2806 | fndecl = build_decl (input_location, |
2807 | FUNCTION_DECL, name, fntype); | |
4ee9c684 | 2808 | |
2809 | /* Mark this decl as external. */ | |
2810 | DECL_EXTERNAL (fndecl) = 1; | |
2811 | TREE_PUBLIC (fndecl) = 1; | |
2812 | ||
4ee9c684 | 2813 | pushdecl (fndecl); |
2814 | ||
b2c4af5e | 2815 | rest_of_decl_compilation (fndecl, 1, 0); |
4ee9c684 | 2816 | |
2817 | return fndecl; | |
2818 | } | |
2819 | ||
8ce86007 | 2820 | /* Builds a function decl. The remaining parameters are the types of the |
2821 | function arguments. Negative nargs indicates a varargs function. */ | |
2822 | ||
2823 | tree | |
2824 | gfc_build_library_function_decl (tree name, tree rettype, int nargs, ...) | |
2825 | { | |
2826 | tree ret; | |
2827 | va_list args; | |
2828 | va_start (args, nargs); | |
2829 | ret = build_library_function_decl_1 (name, NULL, rettype, nargs, args); | |
2830 | va_end (args); | |
2831 | return ret; | |
2832 | } | |
2833 | ||
2834 | /* Builds a function decl. The remaining parameters are the types of the | |
2835 | function arguments. Negative nargs indicates a varargs function. | |
2836 | The SPEC parameter specifies the function argument and return type | |
2837 | specification according to the fnspec function type attribute. */ | |
2838 | ||
4bf69bc3 | 2839 | tree |
8ce86007 | 2840 | gfc_build_library_function_decl_with_spec (tree name, const char *spec, |
2841 | tree rettype, int nargs, ...) | |
2842 | { | |
2843 | tree ret; | |
2844 | va_list args; | |
2845 | va_start (args, nargs); | |
2846 | ret = build_library_function_decl_1 (name, spec, rettype, nargs, args); | |
2847 | va_end (args); | |
2848 | return ret; | |
2849 | } | |
2850 | ||
4ee9c684 | 2851 | static void |
2852 | gfc_build_intrinsic_function_decls (void) | |
2853 | { | |
90ba9145 | 2854 | tree gfc_int4_type_node = gfc_get_int_type (4); |
72ce5390 | 2855 | tree gfc_pint4_type_node = build_pointer_type (gfc_int4_type_node); |
90ba9145 | 2856 | tree gfc_int8_type_node = gfc_get_int_type (8); |
72ce5390 | 2857 | tree gfc_pint8_type_node = build_pointer_type (gfc_int8_type_node); |
920e54ef | 2858 | tree gfc_int16_type_node = gfc_get_int_type (16); |
90ba9145 | 2859 | tree gfc_logical4_type_node = gfc_get_logical_type (4); |
40b806de | 2860 | tree pchar1_type_node = gfc_get_pchar_type (1); |
2861 | tree pchar4_type_node = gfc_get_pchar_type (4); | |
90ba9145 | 2862 | |
4ee9c684 | 2863 | /* String functions. */ |
241ecdc7 | 2864 | gfor_fndecl_compare_string = gfc_build_library_function_decl_with_spec ( |
2865 | get_identifier (PREFIX("compare_string")), "..R.R", | |
2866 | integer_type_node, 4, gfc_charlen_type_node, pchar1_type_node, | |
2867 | gfc_charlen_type_node, pchar1_type_node); | |
537824d1 | 2868 | DECL_PURE_P (gfor_fndecl_compare_string) = 1; |
bc351485 | 2869 | TREE_NOTHROW (gfor_fndecl_compare_string) = 1; |
241ecdc7 | 2870 | |
2871 | gfor_fndecl_concat_string = gfc_build_library_function_decl_with_spec ( | |
2872 | get_identifier (PREFIX("concat_string")), "..W.R.R", | |
2873 | void_type_node, 6, gfc_charlen_type_node, pchar1_type_node, | |
2874 | gfc_charlen_type_node, pchar1_type_node, | |
2875 | gfc_charlen_type_node, pchar1_type_node); | |
bc351485 | 2876 | TREE_NOTHROW (gfor_fndecl_concat_string) = 1; |
241ecdc7 | 2877 | |
2878 | gfor_fndecl_string_len_trim = gfc_build_library_function_decl_with_spec ( | |
2879 | get_identifier (PREFIX("string_len_trim")), "..R", | |
2880 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar1_type_node); | |
537824d1 | 2881 | DECL_PURE_P (gfor_fndecl_string_len_trim) = 1; |
bc351485 | 2882 | TREE_NOTHROW (gfor_fndecl_string_len_trim) = 1; |
241ecdc7 | 2883 | |
2884 | gfor_fndecl_string_index = gfc_build_library_function_decl_with_spec ( | |
2885 | get_identifier (PREFIX("string_index")), "..R.R.", | |
2886 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2887 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2888 | DECL_PURE_P (gfor_fndecl_string_index) = 1; |
bc351485 | 2889 | TREE_NOTHROW (gfor_fndecl_string_index) = 1; |
241ecdc7 | 2890 | |
2891 | gfor_fndecl_string_scan = gfc_build_library_function_decl_with_spec ( | |
2892 | get_identifier (PREFIX("string_scan")), "..R.R.", | |
2893 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2894 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2895 | DECL_PURE_P (gfor_fndecl_string_scan) = 1; |
bc351485 | 2896 | TREE_NOTHROW (gfor_fndecl_string_scan) = 1; |
241ecdc7 | 2897 | |
2898 | gfor_fndecl_string_verify = gfc_build_library_function_decl_with_spec ( | |
2899 | get_identifier (PREFIX("string_verify")), "..R.R.", | |
2900 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2901 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2902 | DECL_PURE_P (gfor_fndecl_string_verify) = 1; |
bc351485 | 2903 | TREE_NOTHROW (gfor_fndecl_string_verify) = 1; |
241ecdc7 | 2904 | |
2905 | gfor_fndecl_string_trim = gfc_build_library_function_decl_with_spec ( | |
2906 | get_identifier (PREFIX("string_trim")), ".Ww.R", | |
2907 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2908 | build_pointer_type (pchar1_type_node), gfc_charlen_type_node, | |
2909 | pchar1_type_node); | |
2910 | ||
2911 | gfor_fndecl_string_minmax = gfc_build_library_function_decl_with_spec ( | |
2912 | get_identifier (PREFIX("string_minmax")), ".Ww.R", | |
2913 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2914 | build_pointer_type (pchar1_type_node), integer_type_node, | |
2915 | integer_type_node); | |
2916 | ||
2917 | gfor_fndecl_adjustl = gfc_build_library_function_decl_with_spec ( | |
2918 | get_identifier (PREFIX("adjustl")), ".W.R", | |
2919 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2920 | pchar1_type_node); | |
bc351485 | 2921 | TREE_NOTHROW (gfor_fndecl_adjustl) = 1; |
241ecdc7 | 2922 | |
2923 | gfor_fndecl_adjustr = gfc_build_library_function_decl_with_spec ( | |
2924 | get_identifier (PREFIX("adjustr")), ".W.R", | |
2925 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2926 | pchar1_type_node); | |
bc351485 | 2927 | TREE_NOTHROW (gfor_fndecl_adjustr) = 1; |
241ecdc7 | 2928 | |
2929 | gfor_fndecl_select_string = gfc_build_library_function_decl_with_spec ( | |
2930 | get_identifier (PREFIX("select_string")), ".R.R.", | |
2931 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2932 | pchar1_type_node, gfc_charlen_type_node); | |
537824d1 | 2933 | DECL_PURE_P (gfor_fndecl_select_string) = 1; |
bc351485 | 2934 | TREE_NOTHROW (gfor_fndecl_select_string) = 1; |
241ecdc7 | 2935 | |
2936 | gfor_fndecl_compare_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2937 | get_identifier (PREFIX("compare_string_char4")), "..R.R", | |
2938 | integer_type_node, 4, gfc_charlen_type_node, pchar4_type_node, | |
2939 | gfc_charlen_type_node, pchar4_type_node); | |
537824d1 | 2940 | DECL_PURE_P (gfor_fndecl_compare_string_char4) = 1; |
bc351485 | 2941 | TREE_NOTHROW (gfor_fndecl_compare_string_char4) = 1; |
241ecdc7 | 2942 | |
2943 | gfor_fndecl_concat_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2944 | get_identifier (PREFIX("concat_string_char4")), "..W.R.R", | |
2945 | void_type_node, 6, gfc_charlen_type_node, pchar4_type_node, | |
2946 | gfc_charlen_type_node, pchar4_type_node, gfc_charlen_type_node, | |
2947 | pchar4_type_node); | |
bc351485 | 2948 | TREE_NOTHROW (gfor_fndecl_concat_string_char4) = 1; |
241ecdc7 | 2949 | |
2950 | gfor_fndecl_string_len_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2951 | get_identifier (PREFIX("string_len_trim_char4")), "..R", | |
2952 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar4_type_node); | |
537824d1 | 2953 | DECL_PURE_P (gfor_fndecl_string_len_trim_char4) = 1; |
bc351485 | 2954 | TREE_NOTHROW (gfor_fndecl_string_len_trim_char4) = 1; |
241ecdc7 | 2955 | |
2956 | gfor_fndecl_string_index_char4 = gfc_build_library_function_decl_with_spec ( | |
2957 | get_identifier (PREFIX("string_index_char4")), "..R.R.", | |
2958 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2959 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2960 | DECL_PURE_P (gfor_fndecl_string_index_char4) = 1; |
bc351485 | 2961 | TREE_NOTHROW (gfor_fndecl_string_index_char4) = 1; |
241ecdc7 | 2962 | |
2963 | gfor_fndecl_string_scan_char4 = gfc_build_library_function_decl_with_spec ( | |
2964 | get_identifier (PREFIX("string_scan_char4")), "..R.R.", | |
2965 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2966 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2967 | DECL_PURE_P (gfor_fndecl_string_scan_char4) = 1; |
bc351485 | 2968 | TREE_NOTHROW (gfor_fndecl_string_scan_char4) = 1; |
241ecdc7 | 2969 | |
2970 | gfor_fndecl_string_verify_char4 = gfc_build_library_function_decl_with_spec ( | |
2971 | get_identifier (PREFIX("string_verify_char4")), "..R.R.", | |
2972 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2973 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2974 | DECL_PURE_P (gfor_fndecl_string_verify_char4) = 1; |
bc351485 | 2975 | TREE_NOTHROW (gfor_fndecl_string_verify_char4) = 1; |
241ecdc7 | 2976 | |
2977 | gfor_fndecl_string_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2978 | get_identifier (PREFIX("string_trim_char4")), ".Ww.R", | |
2979 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2980 | build_pointer_type (pchar4_type_node), gfc_charlen_type_node, | |
2981 | pchar4_type_node); | |
2982 | ||
2983 | gfor_fndecl_string_minmax_char4 = gfc_build_library_function_decl_with_spec ( | |
2984 | get_identifier (PREFIX("string_minmax_char4")), ".Ww.R", | |
2985 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2986 | build_pointer_type (pchar4_type_node), integer_type_node, | |
2987 | integer_type_node); | |
2988 | ||
2989 | gfor_fndecl_adjustl_char4 = gfc_build_library_function_decl_with_spec ( | |
2990 | get_identifier (PREFIX("adjustl_char4")), ".W.R", | |
2991 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2992 | pchar4_type_node); | |
bc351485 | 2993 | TREE_NOTHROW (gfor_fndecl_adjustl_char4) = 1; |
241ecdc7 | 2994 | |
2995 | gfor_fndecl_adjustr_char4 = gfc_build_library_function_decl_with_spec ( | |
2996 | get_identifier (PREFIX("adjustr_char4")), ".W.R", | |
2997 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2998 | pchar4_type_node); | |
bc351485 | 2999 | TREE_NOTHROW (gfor_fndecl_adjustr_char4) = 1; |
241ecdc7 | 3000 | |
3001 | gfor_fndecl_select_string_char4 = gfc_build_library_function_decl_with_spec ( | |
3002 | get_identifier (PREFIX("select_string_char4")), ".R.R.", | |
3003 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
3004 | pvoid_type_node, gfc_charlen_type_node); | |
537824d1 | 3005 | DECL_PURE_P (gfor_fndecl_select_string_char4) = 1; |
bc351485 | 3006 | TREE_NOTHROW (gfor_fndecl_select_string_char4) = 1; |
b44437b9 | 3007 | |
3008 | ||
3009 | /* Conversion between character kinds. */ | |
3010 | ||
241ecdc7 | 3011 | gfor_fndecl_convert_char1_to_char4 = gfc_build_library_function_decl_with_spec ( |
3012 | get_identifier (PREFIX("convert_char1_to_char4")), ".w.R", | |
3013 | void_type_node, 3, build_pointer_type (pchar4_type_node), | |
3014 | gfc_charlen_type_node, pchar1_type_node); | |
b44437b9 | 3015 | |
241ecdc7 | 3016 | gfor_fndecl_convert_char4_to_char1 = gfc_build_library_function_decl_with_spec ( |
3017 | get_identifier (PREFIX("convert_char4_to_char1")), ".w.R", | |
3018 | void_type_node, 3, build_pointer_type (pchar1_type_node), | |
3019 | gfc_charlen_type_node, pchar4_type_node); | |
b44437b9 | 3020 | |
40b806de | 3021 | /* Misc. functions. */ |
5fcc6ec2 | 3022 | |
241ecdc7 | 3023 | gfor_fndecl_ttynam = gfc_build_library_function_decl_with_spec ( |
3024 | get_identifier (PREFIX("ttynam")), ".W", | |
3025 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
3026 | integer_type_node); | |
3027 | ||
3028 | gfor_fndecl_fdate = gfc_build_library_function_decl_with_spec ( | |
3029 | get_identifier (PREFIX("fdate")), ".W", | |
3030 | void_type_node, 2, pchar_type_node, gfc_charlen_type_node); | |
3031 | ||
3032 | gfor_fndecl_ctime = gfc_build_library_function_decl_with_spec ( | |
3033 | get_identifier (PREFIX("ctime")), ".W", | |
3034 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
3035 | gfc_int8_type_node); | |
3036 | ||
3037 | gfor_fndecl_sc_kind = gfc_build_library_function_decl_with_spec ( | |
3038 | get_identifier (PREFIX("selected_char_kind")), "..R", | |
3039 | gfc_int4_type_node, 2, gfc_charlen_type_node, pchar_type_node); | |
537824d1 | 3040 | DECL_PURE_P (gfor_fndecl_sc_kind) = 1; |
bc351485 | 3041 | TREE_NOTHROW (gfor_fndecl_sc_kind) = 1; |
241ecdc7 | 3042 | |
3043 | gfor_fndecl_si_kind = gfc_build_library_function_decl_with_spec ( | |
3044 | get_identifier (PREFIX("selected_int_kind")), ".R", | |
3045 | gfc_int4_type_node, 1, pvoid_type_node); | |
537824d1 | 3046 | DECL_PURE_P (gfor_fndecl_si_kind) = 1; |
bc351485 | 3047 | TREE_NOTHROW (gfor_fndecl_si_kind) = 1; |
241ecdc7 | 3048 | |
3049 | gfor_fndecl_sr_kind = gfc_build_library_function_decl_with_spec ( | |
3050 | get_identifier (PREFIX("selected_real_kind2008")), ".RR", | |
3051 | gfc_int4_type_node, 3, pvoid_type_node, pvoid_type_node, | |
3052 | pvoid_type_node); | |
537824d1 | 3053 | DECL_PURE_P (gfor_fndecl_sr_kind) = 1; |
bc351485 | 3054 | TREE_NOTHROW (gfor_fndecl_sr_kind) = 1; |
4ee9c684 | 3055 | |
72ce5390 | 3056 | gfor_fndecl_system_clock4 = gfc_build_library_function_decl ( |
3057 | get_identifier (PREFIX("system_clock_4")), | |
3058 | void_type_node, 3, gfc_pint4_type_node, gfc_pint4_type_node, | |
3059 | gfc_pint4_type_node); | |
3060 | ||
3061 | gfor_fndecl_system_clock8 = gfc_build_library_function_decl ( | |
3062 | get_identifier (PREFIX("system_clock_8")), | |
3063 | void_type_node, 3, gfc_pint8_type_node, gfc_pint8_type_node, | |
3064 | gfc_pint8_type_node); | |
3065 | ||
4ee9c684 | 3066 | /* Power functions. */ |
76834664 | 3067 | { |
920e54ef | 3068 | tree ctype, rtype, itype, jtype; |
3069 | int rkind, ikind, jkind; | |
3070 | #define NIKINDS 3 | |
3071 | #define NRKINDS 4 | |
3072 | static int ikinds[NIKINDS] = {4, 8, 16}; | |
3073 | static int rkinds[NRKINDS] = {4, 8, 10, 16}; | |
3074 | char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */ | |
3075 | ||
3076 | for (ikind=0; ikind < NIKINDS; ikind++) | |
76834664 | 3077 | { |
920e54ef | 3078 | itype = gfc_get_int_type (ikinds[ikind]); |
3079 | ||
3080 | for (jkind=0; jkind < NIKINDS; jkind++) | |
3081 | { | |
3082 | jtype = gfc_get_int_type (ikinds[jkind]); | |
3083 | if (itype && jtype) | |
3084 | { | |
3085 | sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind], | |
3086 | ikinds[jkind]); | |
3087 | gfor_fndecl_math_powi[jkind][ikind].integer = | |
3088 | gfc_build_library_function_decl (get_identifier (name), | |
3089 | jtype, 2, jtype, itype); | |
2177d98b | 3090 | TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
bc351485 | 3091 | TREE_NOTHROW (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
920e54ef | 3092 | } |
3093 | } | |
3094 | ||
3095 | for (rkind = 0; rkind < NRKINDS; rkind ++) | |
76834664 | 3096 | { |
920e54ef | 3097 | rtype = gfc_get_real_type (rkinds[rkind]); |
3098 | if (rtype && itype) | |
3099 | { | |
3100 | sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind], | |
3101 | ikinds[ikind]); | |
3102 | gfor_fndecl_math_powi[rkind][ikind].real = | |
3103 | gfc_build_library_function_decl (get_identifier (name), | |
3104 | rtype, 2, rtype, itype); | |
2177d98b | 3105 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
bc351485 | 3106 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
920e54ef | 3107 | } |
3108 | ||
3109 | ctype = gfc_get_complex_type (rkinds[rkind]); | |
3110 | if (ctype && itype) | |
3111 | { | |
3112 | sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind], | |
3113 | ikinds[ikind]); | |
3114 | gfor_fndecl_math_powi[rkind][ikind].cmplx = | |
3115 | gfc_build_library_function_decl (get_identifier (name), | |
3116 | ctype, 2,ctype, itype); | |
2177d98b | 3117 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
bc351485 | 3118 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
920e54ef | 3119 | } |
76834664 | 3120 | } |
3121 | } | |
920e54ef | 3122 | #undef NIKINDS |
3123 | #undef NRKINDS | |
76834664 | 3124 | } |
3125 | ||
241ecdc7 | 3126 | gfor_fndecl_math_ishftc4 = gfc_build_library_function_decl ( |
3127 | get_identifier (PREFIX("ishftc4")), | |
3128 | gfc_int4_type_node, 3, gfc_int4_type_node, gfc_int4_type_node, | |
3129 | gfc_int4_type_node); | |
bc351485 | 3130 | TREE_READONLY (gfor_fndecl_math_ishftc4) = 1; |
3131 | TREE_NOTHROW (gfor_fndecl_math_ishftc4) = 1; | |
a90fe829 | 3132 | |
241ecdc7 | 3133 | gfor_fndecl_math_ishftc8 = gfc_build_library_function_decl ( |
3134 | get_identifier (PREFIX("ishftc8")), | |
3135 | gfc_int8_type_node, 3, gfc_int8_type_node, gfc_int4_type_node, | |
3136 | gfc_int4_type_node); | |
bc351485 | 3137 | TREE_READONLY (gfor_fndecl_math_ishftc8) = 1; |
3138 | TREE_NOTHROW (gfor_fndecl_math_ishftc8) = 1; | |
241ecdc7 | 3139 | |
920e54ef | 3140 | if (gfc_int16_type_node) |
bc351485 | 3141 | { |
3142 | gfor_fndecl_math_ishftc16 = gfc_build_library_function_decl ( | |
241ecdc7 | 3143 | get_identifier (PREFIX("ishftc16")), |
3144 | gfc_int16_type_node, 3, gfc_int16_type_node, gfc_int4_type_node, | |
3145 | gfc_int4_type_node); | |
bc351485 | 3146 | TREE_READONLY (gfor_fndecl_math_ishftc16) = 1; |
3147 | TREE_NOTHROW (gfor_fndecl_math_ishftc16) = 1; | |
3148 | } | |
920e54ef | 3149 | |
4e8e57b0 | 3150 | /* BLAS functions. */ |
3151 | { | |
36c921b9 | 3152 | tree pint = build_pointer_type (integer_type_node); |
4e8e57b0 | 3153 | tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind)); |
3154 | tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind)); | |
3155 | tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind)); | |
3156 | tree pz = build_pointer_type | |
3157 | (gfc_get_complex_type (gfc_default_double_kind)); | |
3158 | ||
3159 | gfor_fndecl_sgemm = gfc_build_library_function_decl | |
3160 | (get_identifier | |
3161 | (gfc_option.flag_underscoring ? "sgemm_" | |
3162 | : "sgemm"), | |
3163 | void_type_node, 15, pchar_type_node, | |
3164 | pchar_type_node, pint, pint, pint, ps, ps, pint, | |
36c921b9 | 3165 | ps, pint, ps, ps, pint, integer_type_node, |
3166 | integer_type_node); | |
4e8e57b0 | 3167 | gfor_fndecl_dgemm = gfc_build_library_function_decl |
3168 | (get_identifier | |
3169 | (gfc_option.flag_underscoring ? "dgemm_" | |
3170 | : "dgemm"), | |
3171 | void_type_node, 15, pchar_type_node, | |
3172 | pchar_type_node, pint, pint, pint, pd, pd, pint, | |
36c921b9 | 3173 | pd, pint, pd, pd, pint, integer_type_node, |
3174 | integer_type_node); | |
4e8e57b0 | 3175 | gfor_fndecl_cgemm = gfc_build_library_function_decl |
3176 | (get_identifier | |
3177 | (gfc_option.flag_underscoring ? "cgemm_" | |
3178 | : "cgemm"), | |
3179 | void_type_node, 15, pchar_type_node, | |
3180 | pchar_type_node, pint, pint, pint, pc, pc, pint, | |
36c921b9 | 3181 | pc, pint, pc, pc, pint, integer_type_node, |
3182 | integer_type_node); | |
4e8e57b0 | 3183 | gfor_fndecl_zgemm = gfc_build_library_function_decl |
3184 | (get_identifier | |
3185 | (gfc_option.flag_underscoring ? "zgemm_" | |
3186 | : "zgemm"), | |
3187 | void_type_node, 15, pchar_type_node, | |
3188 | pchar_type_node, pint, pint, pint, pz, pz, pint, | |
36c921b9 | 3189 | pz, pint, pz, pz, pint, integer_type_node, |
3190 | integer_type_node); | |
4e8e57b0 | 3191 | } |
3192 | ||
4ee9c684 | 3193 | /* Other functions. */ |
241ecdc7 | 3194 | gfor_fndecl_size0 = gfc_build_library_function_decl_with_spec ( |
3195 | get_identifier (PREFIX("size0")), ".R", | |
3196 | gfc_array_index_type, 1, pvoid_type_node); | |
537824d1 | 3197 | DECL_PURE_P (gfor_fndecl_size0) = 1; |
bc351485 | 3198 | TREE_NOTHROW (gfor_fndecl_size0) = 1; |
241ecdc7 | 3199 | |
3200 | gfor_fndecl_size1 = gfc_build_library_function_decl_with_spec ( | |
3201 | get_identifier (PREFIX("size1")), ".R", | |
3202 | gfc_array_index_type, 2, pvoid_type_node, gfc_array_index_type); | |
537824d1 | 3203 | DECL_PURE_P (gfor_fndecl_size1) = 1; |
bc351485 | 3204 | TREE_NOTHROW (gfor_fndecl_size1) = 1; |
241ecdc7 | 3205 | |
3206 | gfor_fndecl_iargc = gfc_build_library_function_decl ( | |
3207 | get_identifier (PREFIX ("iargc")), gfc_int4_type_node, 0); | |
bc351485 | 3208 | TREE_NOTHROW (gfor_fndecl_iargc) = 1; |
4ee9c684 | 3209 | } |
3210 | ||
3211 | ||
3212 | /* Make prototypes for runtime library functions. */ | |
3213 | ||
3214 | void | |
3215 | gfc_build_builtin_function_decls (void) | |
3216 | { | |
90ba9145 | 3217 | tree gfc_int4_type_node = gfc_get_int_type (4); |
4ee9c684 | 3218 | |
241ecdc7 | 3219 | gfor_fndecl_stop_numeric = gfc_build_library_function_decl ( |
3220 | get_identifier (PREFIX("stop_numeric")), | |
3221 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 3222 | /* STOP doesn't return. */ |
98ccec97 | 3223 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1; |
3224 | ||
dff2ea5f | 3225 | gfor_fndecl_stop_numeric_f08 = gfc_build_library_function_decl ( |
3226 | get_identifier (PREFIX("stop_numeric_f08")), | |
3227 | void_type_node, 1, gfc_int4_type_node); | |
3228 | /* STOP doesn't return. */ | |
3229 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric_f08) = 1; | |
3230 | ||
241ecdc7 | 3231 | gfor_fndecl_stop_string = gfc_build_library_function_decl_with_spec ( |
3232 | get_identifier (PREFIX("stop_string")), ".R.", | |
3233 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
070cc790 | 3234 | /* STOP doesn't return. */ |
241ecdc7 | 3235 | TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1; |
537824d1 | 3236 | |
241ecdc7 | 3237 | gfor_fndecl_error_stop_numeric = gfc_build_library_function_decl ( |
3238 | get_identifier (PREFIX("error_stop_numeric")), | |
3239 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 3240 | /* ERROR STOP doesn't return. */ |
3241 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_numeric) = 1; | |
3242 | ||
241ecdc7 | 3243 | gfor_fndecl_error_stop_string = gfc_build_library_function_decl_with_spec ( |
3244 | get_identifier (PREFIX("error_stop_string")), ".R.", | |
3245 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
c6cd3066 | 3246 | /* ERROR STOP doesn't return. */ |
3247 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_string) = 1; | |
3248 | ||
241ecdc7 | 3249 | gfor_fndecl_pause_numeric = gfc_build_library_function_decl ( |
3250 | get_identifier (PREFIX("pause_numeric")), | |
3251 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 3252 | |
241ecdc7 | 3253 | gfor_fndecl_pause_string = gfc_build_library_function_decl_with_spec ( |
3254 | get_identifier (PREFIX("pause_string")), ".R.", | |
3255 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
4ee9c684 | 3256 | |
241ecdc7 | 3257 | gfor_fndecl_runtime_error = gfc_build_library_function_decl_with_spec ( |
3258 | get_identifier (PREFIX("runtime_error")), ".R", | |
3259 | void_type_node, -1, pchar_type_node); | |
9c0f3811 | 3260 | /* The runtime_error function does not return. */ |
3261 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1; | |
4ee9c684 | 3262 | |
241ecdc7 | 3263 | gfor_fndecl_runtime_error_at = gfc_build_library_function_decl_with_spec ( |
3264 | get_identifier (PREFIX("runtime_error_at")), ".RR", | |
3265 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
50ad5fa2 | 3266 | /* The runtime_error_at function does not return. */ |
3267 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1; | |
a90fe829 | 3268 | |
241ecdc7 | 3269 | gfor_fndecl_runtime_warning_at = gfc_build_library_function_decl_with_spec ( |
3270 | get_identifier (PREFIX("runtime_warning_at")), ".RR", | |
3271 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
3272 | ||
3273 | gfor_fndecl_generate_error = gfc_build_library_function_decl_with_spec ( | |
3274 | get_identifier (PREFIX("generate_error")), ".R.R", | |
3275 | void_type_node, 3, pvoid_type_node, integer_type_node, | |
3276 | pchar_type_node); | |
3277 | ||
3278 | gfor_fndecl_os_error = gfc_build_library_function_decl_with_spec ( | |
3279 | get_identifier (PREFIX("os_error")), ".R", | |
3280 | void_type_node, 1, pchar_type_node); | |
9915365e | 3281 | /* The runtime_error function does not return. */ |
3282 | TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1; | |
3283 | ||
241ecdc7 | 3284 | gfor_fndecl_set_args = gfc_build_library_function_decl ( |
3285 | get_identifier (PREFIX("set_args")), | |
3286 | void_type_node, 2, integer_type_node, | |
3287 | build_pointer_type (pchar_type_node)); | |
7257a5d2 | 3288 | |
241ecdc7 | 3289 | gfor_fndecl_set_fpe = gfc_build_library_function_decl ( |
3290 | get_identifier (PREFIX("set_fpe")), | |
3291 | void_type_node, 1, integer_type_node); | |
8c84a5de | 3292 | |
d566c3e0 | 3293 | gfor_fndecl_ieee_procedure_entry = gfc_build_library_function_decl ( |
3294 | get_identifier (PREFIX("ieee_procedure_entry")), | |
3295 | void_type_node, 1, pvoid_type_node); | |
3296 | ||
3297 | gfor_fndecl_ieee_procedure_exit = gfc_build_library_function_decl ( | |
3298 | get_identifier (PREFIX("ieee_procedure_exit")), | |
3299 | void_type_node, 1, pvoid_type_node); | |
3300 | ||
56c7c2d7 | 3301 | /* Keep the array dimension in sync with the call, later in this file. */ |
241ecdc7 | 3302 | gfor_fndecl_set_options = gfc_build_library_function_decl_with_spec ( |
3303 | get_identifier (PREFIX("set_options")), "..R", | |
3304 | void_type_node, 2, integer_type_node, | |
3305 | build_pointer_type (integer_type_node)); | |
64fc3c4c | 3306 | |
241ecdc7 | 3307 | gfor_fndecl_set_convert = gfc_build_library_function_decl ( |
3308 | get_identifier (PREFIX("set_convert")), | |
3309 | void_type_node, 1, integer_type_node); | |
15774a8b | 3310 | |
241ecdc7 | 3311 | gfor_fndecl_set_record_marker = gfc_build_library_function_decl ( |
3312 | get_identifier (PREFIX("set_record_marker")), | |
3313 | void_type_node, 1, integer_type_node); | |
f23886ab | 3314 | |
241ecdc7 | 3315 | gfor_fndecl_set_max_subrecord_length = gfc_build_library_function_decl ( |
3316 | get_identifier (PREFIX("set_max_subrecord_length")), | |
3317 | void_type_node, 1, integer_type_node); | |
bbaaa7b1 | 3318 | |
8ce86007 | 3319 | gfor_fndecl_in_pack = gfc_build_library_function_decl_with_spec ( |
241ecdc7 | 3320 | get_identifier (PREFIX("internal_pack")), ".r", |
3321 | pvoid_type_node, 1, pvoid_type_node); | |
4ee9c684 | 3322 | |
8ce86007 | 3323 | gfor_fndecl_in_unpack = gfc_build_library_function_decl_with_spec ( |
241ecdc7 | 3324 | get_identifier (PREFIX("internal_unpack")), ".wR", |
3325 | void_type_node, 2, pvoid_type_node, pvoid_type_node); | |
3326 | ||
3327 | gfor_fndecl_associated = gfc_build_library_function_decl_with_spec ( | |
3328 | get_identifier (PREFIX("associated")), ".RR", | |
3329 | integer_type_node, 2, ppvoid_type_node, ppvoid_type_node); | |
537824d1 | 3330 | DECL_PURE_P (gfor_fndecl_associated) = 1; |
bc351485 | 3331 | TREE_NOTHROW (gfor_fndecl_associated) = 1; |
4ee9c684 | 3332 | |
70b5944a | 3333 | /* Coarray library calls. */ |
3334 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
3335 | { | |
3336 | tree pint_type, pppchar_type; | |
3337 | ||
3338 | pint_type = build_pointer_type (integer_type_node); | |
3339 | pppchar_type | |
3340 | = build_pointer_type (build_pointer_type (pchar_type_node)); | |
3341 | ||
3342 | gfor_fndecl_caf_init = gfc_build_library_function_decl ( | |
3343 | get_identifier (PREFIX("caf_init")), void_type_node, | |
53687b4e | 3344 | 2, pint_type, pppchar_type); |
70b5944a | 3345 | |
3346 | gfor_fndecl_caf_finalize = gfc_build_library_function_decl ( | |
3347 | get_identifier (PREFIX("caf_finalize")), void_type_node, 0); | |
3348 | ||
d44f2f7c | 3349 | gfor_fndecl_caf_this_image = gfc_build_library_function_decl ( |
3350 | get_identifier (PREFIX("caf_this_image")), integer_type_node, | |
3351 | 1, integer_type_node); | |
3352 | ||
3353 | gfor_fndecl_caf_num_images = gfc_build_library_function_decl ( | |
3354 | get_identifier (PREFIX("caf_num_images")), integer_type_node, | |
da82fa7c | 3355 | 2, integer_type_node, integer_type_node); |
d44f2f7c | 3356 | |
a961ca30 | 3357 | gfor_fndecl_caf_register = gfc_build_library_function_decl_with_spec ( |
3358 | get_identifier (PREFIX("caf_register")), "...WWW", pvoid_type_node, 6, | |
3359 | size_type_node, integer_type_node, ppvoid_type_node, pint_type, | |
d0d776fb | 3360 | pchar_type_node, integer_type_node); |
3361 | ||
3362 | gfor_fndecl_caf_deregister = gfc_build_library_function_decl_with_spec ( | |
3363 | get_identifier (PREFIX("caf_deregister")), ".WWW", void_type_node, 4, | |
3364 | ppvoid_type_node, pint_type, pchar_type_node, integer_type_node); | |
a961ca30 | 3365 | |
5f4a118e | 3366 | gfor_fndecl_caf_get = gfc_build_library_function_decl_with_spec ( |
9f1c76f9 | 3367 | get_identifier (PREFIX("caf_get")), ".R.RRRW", void_type_node, 9, |
5f4a118e | 3368 | pvoid_type_node, size_type_node, integer_type_node, pvoid_type_node, |
9f1c76f9 | 3369 | pvoid_type_node, pvoid_type_node, integer_type_node, integer_type_node, |
3370 | boolean_type_node); | |
5f4a118e | 3371 | |
3372 | gfor_fndecl_caf_send = gfc_build_library_function_decl_with_spec ( | |
9f1c76f9 | 3373 | get_identifier (PREFIX("caf_send")), ".R.RRRR", void_type_node, 9, |
5f4a118e | 3374 | pvoid_type_node, size_type_node, integer_type_node, pvoid_type_node, |
9f1c76f9 | 3375 | pvoid_type_node, pvoid_type_node, integer_type_node, integer_type_node, |
3376 | boolean_type_node); | |
5f4a118e | 3377 | |
3378 | gfor_fndecl_caf_sendget = gfc_build_library_function_decl_with_spec ( | |
3379 | get_identifier (PREFIX("caf_sendget")), ".R.RRRR.RRR", void_type_node, | |
9f1c76f9 | 3380 | 13, pvoid_type_node, size_type_node, integer_type_node, pvoid_type_node, |
5f4a118e | 3381 | pvoid_type_node, pvoid_type_node, size_type_node, integer_type_node, |
9f1c76f9 | 3382 | pvoid_type_node, pvoid_type_node, integer_type_node, integer_type_node, |
3383 | boolean_type_node); | |
5f4a118e | 3384 | |
70b5944a | 3385 | gfor_fndecl_caf_sync_all = gfc_build_library_function_decl_with_spec ( |
96b417f0 | 3386 | get_identifier (PREFIX("caf_sync_all")), ".WW", void_type_node, |
79ed4a8e | 3387 | 3, pint_type, pchar_type_node, integer_type_node); |
70b5944a | 3388 | |
3389 | gfor_fndecl_caf_sync_images = gfc_build_library_function_decl_with_spec ( | |
96b417f0 | 3390 | get_identifier (PREFIX("caf_sync_images")), ".RRWW", void_type_node, |
3391 | 5, integer_type_node, pint_type, pint_type, | |
79ed4a8e | 3392 | pchar_type_node, integer_type_node); |
70b5944a | 3393 | |
3394 | gfor_fndecl_caf_error_stop = gfc_build_library_function_decl ( | |
3395 | get_identifier (PREFIX("caf_error_stop")), | |
3396 | void_type_node, 1, gfc_int4_type_node); | |
3397 | /* CAF's ERROR STOP doesn't return. */ | |
3398 | TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop) = 1; | |
3399 | ||
3400 | gfor_fndecl_caf_error_stop_str = gfc_build_library_function_decl_with_spec ( | |
3401 | get_identifier (PREFIX("caf_error_stop_str")), ".R.", | |
3402 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
3403 | /* CAF's ERROR STOP doesn't return. */ | |
3404 | TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop_str) = 1; | |
79ed4a8e | 3405 | |
97b9ac34 | 3406 | gfor_fndecl_caf_atomic_def = gfc_build_library_function_decl_with_spec ( |
3407 | get_identifier (PREFIX("caf_atomic_define")), "R..RW", | |
3408 | void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node, | |
3409 | pvoid_type_node, pint_type, integer_type_node, integer_type_node); | |
3410 | ||
3411 | gfor_fndecl_caf_atomic_ref = gfc_build_library_function_decl_with_spec ( | |
3412 | get_identifier (PREFIX("caf_atomic_ref")), "R..WW", | |
3413 | void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node, | |
3414 | pvoid_type_node, pint_type, integer_type_node, integer_type_node); | |
3415 | ||
3416 | gfor_fndecl_caf_atomic_cas = gfc_build_library_function_decl_with_spec ( | |
3417 | get_identifier (PREFIX("caf_atomic_cas")), "R..WRRW", | |
3418 | void_type_node, 9, pvoid_type_node, size_type_node, integer_type_node, | |
3419 | pvoid_type_node, pvoid_type_node, pvoid_type_node, pint_type, | |
3420 | integer_type_node, integer_type_node); | |
3421 | ||
3422 | gfor_fndecl_caf_atomic_op = gfc_build_library_function_decl_with_spec ( | |
3423 | get_identifier (PREFIX("caf_atomic_op")), ".R..RWW", | |
3424 | void_type_node, 9, integer_type_node, pvoid_type_node, size_type_node, | |
3425 | integer_type_node, pvoid_type_node, pvoid_type_node, pint_type, | |
3426 | integer_type_node, integer_type_node); | |
3427 | ||
498b946e | 3428 | gfor_fndecl_caf_lock = gfc_build_library_function_decl_with_spec ( |
3429 | get_identifier (PREFIX("caf_lock")), "R..WWW", | |
3430 | void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node, | |
3431 | pint_type, pint_type, pchar_type_node, integer_type_node); | |
3432 | ||
3433 | gfor_fndecl_caf_unlock = gfc_build_library_function_decl_with_spec ( | |
3434 | get_identifier (PREFIX("caf_unlock")), "R..WW", | |
87550f4f | 3435 | void_type_node, 6, pvoid_type_node, size_type_node, integer_type_node, |
498b946e | 3436 | pint_type, pchar_type_node, integer_type_node); |
3437 | ||
52306a18 | 3438 | gfor_fndecl_co_broadcast = gfc_build_library_function_decl_with_spec ( |
3439 | get_identifier (PREFIX("caf_co_broadcast")), "W.WW", | |
3440 | void_type_node, 5, pvoid_type_node, integer_type_node, | |
3441 | pint_type, pchar_type_node, integer_type_node); | |
3442 | ||
79ed4a8e | 3443 | gfor_fndecl_co_max = gfc_build_library_function_decl_with_spec ( |
5f4a118e | 3444 | get_identifier (PREFIX("caf_co_max")), "W.WW", |
3445 | void_type_node, 6, pvoid_type_node, integer_type_node, | |
79ed4a8e | 3446 | pint_type, pchar_type_node, integer_type_node, integer_type_node); |
3447 | ||
3448 | gfor_fndecl_co_min = gfc_build_library_function_decl_with_spec ( | |
5f4a118e | 3449 | get_identifier (PREFIX("caf_co_min")), "W.WW", |
3450 | void_type_node, 6, pvoid_type_node, integer_type_node, | |
79ed4a8e | 3451 | pint_type, pchar_type_node, integer_type_node, integer_type_node); |
3452 | ||
e39efcef | 3453 | gfor_fndecl_co_reduce = gfc_build_library_function_decl_with_spec ( |
3454 | get_identifier (PREFIX("caf_co_reduce")), "W.R.WW", | |
3455 | void_type_node, 8, pvoid_type_node, | |
3456 | build_pointer_type (build_varargs_function_type_list (void_type_node, | |
3457 | NULL_TREE)), | |
3458 | integer_type_node, integer_type_node, pint_type, pchar_type_node, | |
3459 | integer_type_node, integer_type_node); | |
3460 | ||
79ed4a8e | 3461 | gfor_fndecl_co_sum = gfc_build_library_function_decl_with_spec ( |
5f4a118e | 3462 | get_identifier (PREFIX("caf_co_sum")), "W.WW", |
3463 | void_type_node, 5, pvoid_type_node, integer_type_node, | |
79ed4a8e | 3464 | pint_type, pchar_type_node, integer_type_node); |
70b5944a | 3465 | } |
3466 | ||
4ee9c684 | 3467 | gfc_build_intrinsic_function_decls (); |
3468 | gfc_build_intrinsic_lib_fndecls (); | |
3469 | gfc_build_io_library_fndecls (); | |
3470 | } | |
3471 | ||
3472 | ||
231e961a | 3473 | /* Evaluate the length of dummy character variables. */ |
4ee9c684 | 3474 | |
c5faa799 | 3475 | static void |
3476 | gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, | |
3477 | gfc_wrapped_block *block) | |
4ee9c684 | 3478 | { |
c5faa799 | 3479 | stmtblock_t init; |
4ee9c684 | 3480 | |
b9c7fce7 | 3481 | gfc_finish_decl (cl->backend_decl); |
4ee9c684 | 3482 | |
c5faa799 | 3483 | gfc_start_block (&init); |
4ee9c684 | 3484 | |
3485 | /* Evaluate the string length expression. */ | |
c5faa799 | 3486 | gfc_conv_string_length (cl, NULL, &init); |
d4163395 | 3487 | |
c5faa799 | 3488 | gfc_trans_vla_type_sizes (sym, &init); |
d4163395 | 3489 | |
c5faa799 | 3490 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
4ee9c684 | 3491 | } |
3492 | ||
3493 | ||
3494 | /* Allocate and cleanup an automatic character variable. */ | |
3495 | ||
c5faa799 | 3496 | static void |
3497 | gfc_trans_auto_character_variable (gfc_symbol * sym, gfc_wrapped_block * block) | |
4ee9c684 | 3498 | { |
c5faa799 | 3499 | stmtblock_t init; |
4ee9c684 | 3500 | tree decl; |
4ee9c684 | 3501 | tree tmp; |
3502 | ||
22d678e8 | 3503 | gcc_assert (sym->backend_decl); |
eeebe20b | 3504 | gcc_assert (sym->ts.u.cl && sym->ts.u.cl->length); |
4ee9c684 | 3505 | |
3714c8b6 | 3506 | gfc_init_block (&init); |
4ee9c684 | 3507 | |
3508 | /* Evaluate the string length expression. */ | |
c5faa799 | 3509 | gfc_conv_string_length (sym->ts.u.cl, NULL, &init); |
4ee9c684 | 3510 | |
c5faa799 | 3511 | gfc_trans_vla_type_sizes (sym, &init); |
d4163395 | 3512 | |
4ee9c684 | 3513 | decl = sym->backend_decl; |
3514 | ||
afcf285e | 3515 | /* Emit a DECL_EXPR for this variable, which will cause the |
4b3a701c | 3516 | gimplifier to allocate storage, and all that good stuff. */ |
fd779e1d | 3517 | tmp = fold_build1_loc (input_location, DECL_EXPR, TREE_TYPE (decl), decl); |
c5faa799 | 3518 | gfc_add_expr_to_block (&init, tmp); |
afcf285e | 3519 | |
c5faa799 | 3520 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
4ee9c684 | 3521 | } |
3522 | ||
c8f1568f | 3523 | /* Set the initial value of ASSIGN statement auxiliary variable explicitly. */ |
3524 | ||
c5faa799 | 3525 | static void |
3526 | gfc_trans_assign_aux_var (gfc_symbol * sym, gfc_wrapped_block * block) | |
c8f1568f | 3527 | { |
c5faa799 | 3528 | stmtblock_t init; |
c8f1568f | 3529 | |
3530 | gcc_assert (sym->backend_decl); | |
c5faa799 | 3531 | gfc_start_block (&init); |
c8f1568f | 3532 | |
3533 | /* Set the initial value to length. See the comments in | |
3534 | function gfc_add_assign_aux_vars in this file. */ | |
c5faa799 | 3535 | gfc_add_modify (&init, GFC_DECL_STRING_LEN (sym->backend_decl), |
35bf1214 | 3536 | build_int_cst (gfc_charlen_type_node, -2)); |
c8f1568f | 3537 | |
c5faa799 | 3538 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
c8f1568f | 3539 | } |
3540 | ||
d4163395 | 3541 | static void |
3542 | gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body) | |
3543 | { | |
3544 | tree t = *tp, var, val; | |
3545 | ||
3546 | if (t == NULL || t == error_mark_node) | |
3547 | return; | |
3548 | if (TREE_CONSTANT (t) || DECL_P (t)) | |
3549 | return; | |
3550 | ||
3551 | if (TREE_CODE (t) == SAVE_EXPR) | |
3552 | { | |
3553 | if (SAVE_EXPR_RESOLVED_P (t)) | |
3554 | { | |
3555 | *tp = TREE_OPERAND (t, 0); | |
3556 | return; | |
3557 | } | |
3558 | val = TREE_OPERAND (t, 0); | |
3559 | } | |
3560 | else | |
3561 | val = t; | |
3562 | ||
3563 | var = gfc_create_var_np (TREE_TYPE (t), NULL); | |
3564 | gfc_add_decl_to_function (var); | |
75a70cf9 | 3565 | gfc_add_modify (body, var, val); |
d4163395 | 3566 | if (TREE_CODE (t) == SAVE_EXPR) |
3567 | TREE_OPERAND (t, 0) = var; | |
3568 | *tp = var; | |
3569 | } | |
3570 | ||
3571 | static void | |
3572 | gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body) | |
3573 | { | |
3574 | tree t; | |
3575 | ||
3576 | if (type == NULL || type == error_mark_node) | |
3577 | return; | |
3578 | ||
3579 | type = TYPE_MAIN_VARIANT (type); | |
3580 | ||
3581 | if (TREE_CODE (type) == INTEGER_TYPE) | |
3582 | { | |
3583 | gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body); | |
3584 | gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body); | |
3585 | ||
3586 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3587 | { | |
3588 | TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type); | |
3589 | TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type); | |
3590 | } | |
3591 | } | |
3592 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
3593 | { | |
3594 | gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body); | |
3595 | gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body); | |
3596 | gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body); | |
3597 | gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body); | |
3598 | ||
3599 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3600 | { | |
3601 | TYPE_SIZE (t) = TYPE_SIZE (type); | |
3602 | TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type); | |
3603 | } | |
3604 | } | |
3605 | } | |
3606 | ||
3607 | /* Make sure all type sizes and array domains are either constant, | |
3608 | or variable or parameter decls. This is a simplified variant | |
3609 | of gimplify_type_sizes, but we can't use it here, as none of the | |
3610 | variables in the expressions have been gimplified yet. | |
3611 | As type sizes and domains for various variable length arrays | |
3612 | contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars | |
3613 | time, without this routine gimplify_type_sizes in the middle-end | |
3614 | could result in the type sizes being gimplified earlier than where | |
3615 | those variables are initialized. */ | |
3616 | ||
3617 | void | |
3618 | gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body) | |
3619 | { | |
3620 | tree type = TREE_TYPE (sym->backend_decl); | |
3621 | ||
3622 | if (TREE_CODE (type) == FUNCTION_TYPE | |
3623 | && (sym->attr.function || sym->attr.result || sym->attr.entry)) | |
3624 | { | |
3625 | if (! current_fake_result_decl) | |
3626 | return; | |
3627 | ||
3628 | type = TREE_TYPE (TREE_VALUE (current_fake_result_decl)); | |
3629 | } | |
3630 | ||
3631 | while (POINTER_TYPE_P (type)) | |
3632 | type = TREE_TYPE (type); | |
3633 | ||
3634 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
3635 | { | |
3636 | tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type); | |
3637 | ||
3638 | while (POINTER_TYPE_P (etype)) | |
3639 | etype = TREE_TYPE (etype); | |
3640 | ||
3641 | gfc_trans_vla_type_sizes_1 (etype, body); | |
3642 | } | |
3643 | ||
3644 | gfc_trans_vla_type_sizes_1 (type, body); | |
3645 | } | |
3646 | ||
4ee9c684 | 3647 | |
f0d4969f | 3648 | /* Initialize a derived type by building an lvalue from the symbol |
a545a8f8 | 3649 | and using trans_assignment to do the work. Set dealloc to false |
3650 | if no deallocation prior the assignment is needed. */ | |
c5faa799 | 3651 | void |
3652 | gfc_init_default_dt (gfc_symbol * sym, stmtblock_t * block, bool dealloc) | |
87114d2e | 3653 | { |
f0d4969f | 3654 | gfc_expr *e; |
87114d2e | 3655 | tree tmp; |
3656 | tree present; | |
3657 | ||
c5faa799 | 3658 | gcc_assert (block); |
3659 | ||
f0d4969f | 3660 | gcc_assert (!sym->attr.allocatable); |
3661 | gfc_set_sym_referenced (sym); | |
3662 | e = gfc_lval_expr_from_sym (sym); | |
a545a8f8 | 3663 | tmp = gfc_trans_assignment (e, sym->value, false, dealloc); |
c38054a8 | 3664 | if (sym->attr.dummy && (sym->attr.optional |
3665 | || sym->ns->proc_name->attr.entry_master)) | |
87114d2e | 3666 | { |
f0d4969f | 3667 | present = gfc_conv_expr_present (sym); |
2be9d8f1 | 3668 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), present, |
3669 | tmp, build_empty_stmt (input_location)); | |
87114d2e | 3670 | } |
c5faa799 | 3671 | gfc_add_expr_to_block (block, tmp); |
f0d4969f | 3672 | gfc_free_expr (e); |
87114d2e | 3673 | } |
3674 | ||
3675 | ||
8714fc76 | 3676 | /* Initialize INTENT(OUT) derived type dummies. As well as giving |
3677 | them their default initializer, if they do not have allocatable | |
293d72e0 | 3678 | components, they have their allocatable components deallocated. */ |
8714fc76 | 3679 | |
c5faa799 | 3680 | static void |
3681 | init_intent_out_dt (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
f0d4969f | 3682 | { |
c5faa799 | 3683 | stmtblock_t init; |
f0d4969f | 3684 | gfc_formal_arglist *f; |
8714fc76 | 3685 | tree tmp; |
5907c3ea | 3686 | tree present; |
f0d4969f | 3687 | |
c5faa799 | 3688 | gfc_init_block (&init); |
6777213b | 3689 | for (f = gfc_sym_get_dummy_args (proc_sym); f; f = f->next) |
f0d4969f | 3690 | if (f->sym && f->sym->attr.intent == INTENT_OUT |
c49db15e | 3691 | && !f->sym->attr.pointer |
3692 | && f->sym->ts.type == BT_DERIVED) | |
8714fc76 | 3693 | { |
942ba353 | 3694 | tmp = NULL_TREE; |
3695 | ||
3696 | /* Note: Allocatables are excluded as they are already handled | |
3697 | by the caller. */ | |
3698 | if (!f->sym->attr.allocatable | |
3699 | && gfc_is_finalizable (f->sym->ts.u.derived, NULL)) | |
8714fc76 | 3700 | { |
942ba353 | 3701 | stmtblock_t block; |
3702 | gfc_expr *e; | |
3703 | ||
3704 | gfc_init_block (&block); | |
3705 | f->sym->attr.referenced = 1; | |
3706 | e = gfc_lval_expr_from_sym (f->sym); | |
3707 | gfc_add_finalizer_call (&block, e); | |
3708 | gfc_free_expr (e); | |
3709 | tmp = gfc_finish_block (&block); | |
3710 | } | |
5907c3ea | 3711 | |
942ba353 | 3712 | if (tmp == NULL_TREE && !f->sym->attr.allocatable |
3713 | && f->sym->ts.u.derived->attr.alloc_comp && !f->sym->value) | |
3714 | tmp = gfc_deallocate_alloc_comp (f->sym->ts.u.derived, | |
3715 | f->sym->backend_decl, | |
3716 | f->sym->as ? f->sym->as->rank : 0); | |
5907c3ea | 3717 | |
942ba353 | 3718 | if (tmp != NULL_TREE && (f->sym->attr.optional |
3719 | || f->sym->ns->proc_name->attr.entry_master)) | |
3720 | { | |
3721 | present = gfc_conv_expr_present (f->sym); | |
3722 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), | |
3723 | present, tmp, build_empty_stmt (input_location)); | |
8714fc76 | 3724 | } |
942ba353 | 3725 | |
3726 | if (tmp != NULL_TREE) | |
3727 | gfc_add_expr_to_block (&init, tmp); | |
3728 | else if (f->sym->value && !f->sym->attr.allocatable) | |
c5faa799 | 3729 | gfc_init_default_dt (f->sym, &init, true); |
8714fc76 | 3730 | } |
c56d57d6 | 3731 | else if (f->sym && f->sym->attr.intent == INTENT_OUT |
3732 | && f->sym->ts.type == BT_CLASS | |
3733 | && !CLASS_DATA (f->sym)->attr.class_pointer | |
942ba353 | 3734 | && !CLASS_DATA (f->sym)->attr.allocatable) |
c56d57d6 | 3735 | { |
942ba353 | 3736 | stmtblock_t block; |
3737 | gfc_expr *e; | |
3738 | ||
3739 | gfc_init_block (&block); | |
3740 | f->sym->attr.referenced = 1; | |
3741 | e = gfc_lval_expr_from_sym (f->sym); | |
3742 | gfc_add_finalizer_call (&block, e); | |
3743 | gfc_free_expr (e); | |
3744 | tmp = gfc_finish_block (&block); | |
c56d57d6 | 3745 | |
3746 | if (f->sym->attr.optional || f->sym->ns->proc_name->attr.entry_master) | |
3747 | { | |
3748 | present = gfc_conv_expr_present (f->sym); | |
3749 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), | |
3750 | present, tmp, | |
3751 | build_empty_stmt (input_location)); | |
3752 | } | |
3753 | ||
3754 | gfc_add_expr_to_block (&init, tmp); | |
3755 | } | |
f0d4969f | 3756 | |
c5faa799 | 3757 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
f0d4969f | 3758 | } |
3759 | ||
87114d2e | 3760 | |
4ee9c684 | 3761 | /* Generate function entry and exit code, and add it to the function body. |
3762 | This includes: | |
f888a3fb | 3763 | Allocation and initialization of array variables. |
4ee9c684 | 3764 | Allocation of character string variables. |
c8f1568f | 3765 | Initialization and possibly repacking of dummy arrays. |
0a96a7cc | 3766 | Initialization of ASSIGN statement auxiliary variable. |
8f3f9eab | 3767 | Initialization of ASSOCIATE names. |
0a96a7cc | 3768 | Automatic deallocation. */ |
4ee9c684 | 3769 | |
89ac8ba1 | 3770 | void |
3771 | gfc_trans_deferred_vars (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
4ee9c684 | 3772 | { |
3773 | locus loc; | |
3774 | gfc_symbol *sym; | |
d4163395 | 3775 | gfc_formal_arglist *f; |
c5faa799 | 3776 | stmtblock_t tmpblock; |
25dd7350 | 3777 | bool seen_trans_deferred_array = false; |
617125a6 | 3778 | tree tmp = NULL; |
3779 | gfc_expr *e; | |
3780 | gfc_se se; | |
3781 | stmtblock_t init; | |
4ee9c684 | 3782 | |
3783 | /* Deal with implicit return variables. Explicit return variables will | |
3784 | already have been added. */ | |
3785 | if (gfc_return_by_reference (proc_sym) && proc_sym->result == proc_sym) | |
3786 | { | |
3787 | if (!current_fake_result_decl) | |
3788 | { | |
c6871095 | 3789 | gfc_entry_list *el = NULL; |
3790 | if (proc_sym->attr.entry_master) | |
3791 | { | |
3792 | for (el = proc_sym->ns->entries; el; el = el->next) | |
3793 | if (el->sym != el->sym->result) | |
3794 | break; | |
3795 | } | |
fa7b6574 | 3796 | /* TODO: move to the appropriate place in resolve.c. */ |
3797 | if (warn_return_type && el == NULL) | |
4166acc7 | 3798 | gfc_warning (OPT_Wreturn_type, |
3799 | "Return value of function %qs at %L not set", | |
fa7b6574 | 3800 | proc_sym->name, &proc_sym->declared_at); |
4ee9c684 | 3801 | } |
c6871095 | 3802 | else if (proc_sym->as) |
4ee9c684 | 3803 | { |
d4163395 | 3804 | tree result = TREE_VALUE (current_fake_result_decl); |
89ac8ba1 | 3805 | gfc_trans_dummy_array_bias (proc_sym, result, block); |
10b07432 | 3806 | |
3807 | /* An automatic character length, pointer array result. */ | |
3808 | if (proc_sym->ts.type == BT_CHARACTER | |
eeebe20b | 3809 | && TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) |
89ac8ba1 | 3810 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
4ee9c684 | 3811 | } |
3812 | else if (proc_sym->ts.type == BT_CHARACTER) | |
3813 | { | |
617125a6 | 3814 | if (proc_sym->ts.deferred) |
3815 | { | |
3816 | tmp = NULL; | |
da2c4122 | 3817 | gfc_save_backend_locus (&loc); |
3818 | gfc_set_backend_locus (&proc_sym->declared_at); | |
617125a6 | 3819 | gfc_start_block (&init); |
3820 | /* Zero the string length on entry. */ | |
3821 | gfc_add_modify (&init, proc_sym->ts.u.cl->backend_decl, | |
3822 | build_int_cst (gfc_charlen_type_node, 0)); | |
3823 | /* Null the pointer. */ | |
3824 | e = gfc_lval_expr_from_sym (proc_sym); | |
3825 | gfc_init_se (&se, NULL); | |
3826 | se.want_pointer = 1; | |
3827 | gfc_conv_expr (&se, e); | |
3828 | gfc_free_expr (e); | |
3829 | tmp = se.expr; | |
3830 | gfc_add_modify (&init, tmp, | |
3831 | fold_convert (TREE_TYPE (se.expr), | |
3832 | null_pointer_node)); | |
da2c4122 | 3833 | gfc_restore_backend_locus (&loc); |
617125a6 | 3834 | |
3835 | /* Pass back the string length on exit. */ | |
3836 | tmp = proc_sym->ts.u.cl->passed_length; | |
3837 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
3838 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
3839 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
3840 | gfc_charlen_type_node, tmp, | |
3841 | proc_sym->ts.u.cl->backend_decl); | |
3842 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
3843 | } | |
3844 | else if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) | |
89ac8ba1 | 3845 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
4ee9c684 | 3846 | } |
3847 | else | |
bdaed7d2 | 3848 | gcc_assert (gfc_option.flag_f2c |
3849 | && proc_sym->ts.type == BT_COMPLEX); | |
4ee9c684 | 3850 | } |
3851 | ||
87114d2e | 3852 | /* Initialize the INTENT(OUT) derived type dummy arguments. This |
3853 | should be done here so that the offsets and lbounds of arrays | |
3854 | are available. */ | |
da2c4122 | 3855 | gfc_save_backend_locus (&loc); |
3856 | gfc_set_backend_locus (&proc_sym->declared_at); | |
89ac8ba1 | 3857 | init_intent_out_dt (proc_sym, block); |
da2c4122 | 3858 | gfc_restore_backend_locus (&loc); |
87114d2e | 3859 | |
4ee9c684 | 3860 | for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink) |
3861 | { | |
6b3ceb4e | 3862 | bool alloc_comp_or_fini = (sym->ts.type == BT_DERIVED) |
3863 | && (sym->ts.u.derived->attr.alloc_comp | |
3864 | || gfc_is_finalizable (sym->ts.u.derived, | |
3865 | NULL)); | |
8f3f9eab | 3866 | if (sym->assoc) |
3c82e013 | 3867 | continue; |
3868 | ||
a56d63bc | 3869 | if (sym->attr.subref_array_pointer |
3870 | && GFC_DECL_SPAN (sym->backend_decl) | |
3871 | && !TREE_STATIC (GFC_DECL_SPAN (sym->backend_decl))) | |
3872 | { | |
3873 | gfc_init_block (&tmpblock); | |
3874 | gfc_add_modify (&tmpblock, GFC_DECL_SPAN (sym->backend_decl), | |
3875 | build_int_cst (gfc_array_index_type, 0)); | |
3876 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
3877 | NULL_TREE); | |
3878 | } | |
3879 | ||
85ae3cab | 3880 | if (sym->ts.type == BT_CLASS |
3881 | && (sym->attr.save || gfc_option.flag_max_stack_var_size == 0) | |
fb139b21 | 3882 | && CLASS_DATA (sym)->attr.allocatable) |
3883 | { | |
3884 | tree vptr; | |
3885 | ||
3886 | if (UNLIMITED_POLY (sym)) | |
3887 | vptr = null_pointer_node; | |
3888 | else | |
3889 | { | |
3890 | gfc_symbol *vsym; | |
3891 | vsym = gfc_find_derived_vtab (sym->ts.u.derived); | |
3892 | vptr = gfc_get_symbol_decl (vsym); | |
3893 | vptr = gfc_build_addr_expr (NULL, vptr); | |
3894 | } | |
3895 | ||
3896 | if (CLASS_DATA (sym)->attr.dimension | |
3897 | || (CLASS_DATA (sym)->attr.codimension | |
3898 | && gfc_option.coarray != GFC_FCOARRAY_LIB)) | |
3899 | { | |
3900 | tmp = gfc_class_data_get (sym->backend_decl); | |
3901 | tmp = gfc_build_null_descriptor (TREE_TYPE (tmp)); | |
3902 | } | |
3903 | else | |
3904 | tmp = null_pointer_node; | |
3905 | ||
3906 | DECL_INITIAL (sym->backend_decl) | |
3907 | = gfc_class_set_static_fields (sym->backend_decl, vptr, tmp); | |
3908 | TREE_CONSTANT (DECL_INITIAL (sym->backend_decl)) = 1; | |
3909 | } | |
3910 | else if (sym->attr.dimension || sym->attr.codimension) | |
4ee9c684 | 3911 | { |
f7a6fca4 | 3912 | /* Assumed-size Cray pointees need to be treated as AS_EXPLICIT. */ |
3913 | array_type tmp = sym->as->type; | |
3914 | if (tmp == AS_ASSUMED_SIZE && sym->as->cp_was_assumed) | |
3915 | tmp = AS_EXPLICIT; | |
3916 | switch (tmp) | |
4ee9c684 | 3917 | { |
3918 | case AS_EXPLICIT: | |
3919 | if (sym->attr.dummy || sym->attr.result) | |
89ac8ba1 | 3920 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
4ee9c684 | 3921 | else if (sym->attr.pointer || sym->attr.allocatable) |
3922 | { | |
3923 | if (TREE_STATIC (sym->backend_decl)) | |
da2c4122 | 3924 | { |
3925 | gfc_save_backend_locus (&loc); | |
3926 | gfc_set_backend_locus (&sym->declared_at); | |
3927 | gfc_trans_static_array_pointer (sym); | |
3928 | gfc_restore_backend_locus (&loc); | |
3929 | } | |
4ee9c684 | 3930 | else |
25dd7350 | 3931 | { |
3932 | seen_trans_deferred_array = true; | |
89ac8ba1 | 3933 | gfc_trans_deferred_array (sym, block); |
25dd7350 | 3934 | } |
4ee9c684 | 3935 | } |
7c7db7f6 | 3936 | else if (sym->attr.codimension && TREE_STATIC (sym->backend_decl)) |
3937 | { | |
3938 | gfc_init_block (&tmpblock); | |
3939 | gfc_trans_array_cobounds (TREE_TYPE (sym->backend_decl), | |
3940 | &tmpblock, sym); | |
3941 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
3942 | NULL_TREE); | |
3943 | continue; | |
3944 | } | |
197423f5 | 3945 | else |
4ee9c684 | 3946 | { |
da2c4122 | 3947 | gfc_save_backend_locus (&loc); |
3948 | gfc_set_backend_locus (&sym->declared_at); | |
3949 | ||
6b3ceb4e | 3950 | if (alloc_comp_or_fini) |
25dd7350 | 3951 | { |
3952 | seen_trans_deferred_array = true; | |
89ac8ba1 | 3953 | gfc_trans_deferred_array (sym, block); |
25dd7350 | 3954 | } |
f0d4969f | 3955 | else if (sym->ts.type == BT_DERIVED |
3956 | && sym->value | |
3957 | && !sym->attr.data | |
3958 | && sym->attr.save == SAVE_NONE) | |
c5faa799 | 3959 | { |
3960 | gfc_start_block (&tmpblock); | |
3961 | gfc_init_default_dt (sym, &tmpblock, false); | |
89ac8ba1 | 3962 | gfc_add_init_cleanup (block, |
c5faa799 | 3963 | gfc_finish_block (&tmpblock), |
3964 | NULL_TREE); | |
3965 | } | |
25dd7350 | 3966 | |
c5faa799 | 3967 | gfc_trans_auto_array_allocation (sym->backend_decl, |
89ac8ba1 | 3968 | sym, block); |
4671339c | 3969 | gfc_restore_backend_locus (&loc); |
4ee9c684 | 3970 | } |
3971 | break; | |
3972 | ||
3973 | case AS_ASSUMED_SIZE: | |
3974 | /* Must be a dummy parameter. */ | |
452695a8 | 3975 | gcc_assert (sym->attr.dummy || sym->as->cp_was_assumed); |
4ee9c684 | 3976 | |
3977 | /* We should always pass assumed size arrays the g77 way. */ | |
452695a8 | 3978 | if (sym->attr.dummy) |
89ac8ba1 | 3979 | gfc_trans_g77_array (sym, block); |
c5faa799 | 3980 | break; |
4ee9c684 | 3981 | |
3982 | case AS_ASSUMED_SHAPE: | |
3983 | /* Must be a dummy parameter. */ | |
22d678e8 | 3984 | gcc_assert (sym->attr.dummy); |
4ee9c684 | 3985 | |
89ac8ba1 | 3986 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
4ee9c684 | 3987 | break; |
3988 | ||
f00f6dd6 | 3989 | case AS_ASSUMED_RANK: |
4ee9c684 | 3990 | case AS_DEFERRED: |
25dd7350 | 3991 | seen_trans_deferred_array = true; |
89ac8ba1 | 3992 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 3993 | break; |
3994 | ||
3995 | default: | |
22d678e8 | 3996 | gcc_unreachable (); |
4ee9c684 | 3997 | } |
6b3ceb4e | 3998 | if (alloc_comp_or_fini && !seen_trans_deferred_array) |
89ac8ba1 | 3999 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 4000 | } |
fd23cc08 | 4001 | else if ((!sym->attr.dummy || sym->ts.deferred) |
4002 | && (sym->ts.type == BT_CLASS | |
3a19c063 | 4003 | && CLASS_DATA (sym)->attr.class_pointer)) |
2930c007 | 4004 | continue; |
617125a6 | 4005 | else if ((!sym->attr.dummy || sym->ts.deferred) |
456dd7d6 | 4006 | && (sym->attr.allocatable |
4007 | || (sym->ts.type == BT_CLASS | |
4008 | && CLASS_DATA (sym)->attr.allocatable))) | |
0a96a7cc | 4009 | { |
be125be0 | 4010 | if (!sym->attr.save && gfc_option.flag_max_stack_var_size != 0) |
908e9973 | 4011 | { |
d0d776fb | 4012 | tree descriptor = NULL_TREE; |
4013 | ||
908e9973 | 4014 | /* Nullify and automatic deallocation of allocatable |
4015 | scalars. */ | |
908e9973 | 4016 | e = gfc_lval_expr_from_sym (sym); |
4017 | if (sym->ts.type == BT_CLASS) | |
607ae689 | 4018 | gfc_add_data_component (e); |
908e9973 | 4019 | |
4020 | gfc_init_se (&se, NULL); | |
fd23cc08 | 4021 | if (sym->ts.type != BT_CLASS |
4022 | || sym->ts.u.derived->attr.dimension | |
4023 | || sym->ts.u.derived->attr.codimension) | |
4024 | { | |
4025 | se.want_pointer = 1; | |
4026 | gfc_conv_expr (&se, e); | |
4027 | } | |
4028 | else if (sym->ts.type == BT_CLASS | |
4029 | && !CLASS_DATA (sym)->attr.dimension | |
4030 | && !CLASS_DATA (sym)->attr.codimension) | |
4031 | { | |
4032 | se.want_pointer = 1; | |
4033 | gfc_conv_expr (&se, e); | |
4034 | } | |
4035 | else | |
4036 | { | |
4037 | gfc_conv_expr (&se, e); | |
d0d776fb | 4038 | descriptor = se.expr; |
fd23cc08 | 4039 | se.expr = gfc_conv_descriptor_data_addr (se.expr); |
4040 | se.expr = build_fold_indirect_ref_loc (input_location, se.expr); | |
4041 | } | |
908e9973 | 4042 | gfc_free_expr (e); |
4043 | ||
da2c4122 | 4044 | gfc_save_backend_locus (&loc); |
4045 | gfc_set_backend_locus (&sym->declared_at); | |
c5faa799 | 4046 | gfc_start_block (&init); |
617125a6 | 4047 | |
4048 | if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
4049 | { | |
4050 | /* Nullify when entering the scope. */ | |
883d6776 | 4051 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
4052 | TREE_TYPE (se.expr), se.expr, | |
4053 | fold_convert (TREE_TYPE (se.expr), | |
4054 | null_pointer_node)); | |
4055 | if (sym->attr.optional) | |
4056 | { | |
4057 | tree present = gfc_conv_expr_present (sym); | |
4058 | tmp = build3_loc (input_location, COND_EXPR, | |
4059 | void_type_node, present, tmp, | |
4060 | build_empty_stmt (input_location)); | |
4061 | } | |
4062 | gfc_add_expr_to_block (&init, tmp); | |
617125a6 | 4063 | } |
4064 | ||
883d6776 | 4065 | if ((sym->attr.dummy || sym->attr.result) |
617125a6 | 4066 | && sym->ts.type == BT_CHARACTER |
4067 | && sym->ts.deferred) | |
4068 | { | |
4069 | /* Character length passed by reference. */ | |
4070 | tmp = sym->ts.u.cl->passed_length; | |
4071 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
4072 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
4073 | ||
4074 | if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
4075 | /* Zero the string length when entering the scope. */ | |
4076 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, | |
4077 | build_int_cst (gfc_charlen_type_node, 0)); | |
4078 | else | |
883d6776 | 4079 | { |
4080 | tree tmp2; | |
4081 | ||
4082 | tmp2 = fold_build2_loc (input_location, MODIFY_EXPR, | |
4083 | gfc_charlen_type_node, | |
4084 | sym->ts.u.cl->backend_decl, tmp); | |
4085 | if (sym->attr.optional) | |
4086 | { | |
4087 | tree present = gfc_conv_expr_present (sym); | |
4088 | tmp2 = build3_loc (input_location, COND_EXPR, | |
4089 | void_type_node, present, tmp2, | |
4090 | build_empty_stmt (input_location)); | |
4091 | } | |
4092 | gfc_add_expr_to_block (&init, tmp2); | |
4093 | } | |
617125a6 | 4094 | |
da2c4122 | 4095 | gfc_restore_backend_locus (&loc); |
4096 | ||
617125a6 | 4097 | /* Pass the final character length back. */ |
4098 | if (sym->attr.intent != INTENT_IN) | |
883d6776 | 4099 | { |
4100 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
4101 | gfc_charlen_type_node, tmp, | |
4102 | sym->ts.u.cl->backend_decl); | |
4103 | if (sym->attr.optional) | |
4104 | { | |
4105 | tree present = gfc_conv_expr_present (sym); | |
4106 | tmp = build3_loc (input_location, COND_EXPR, | |
4107 | void_type_node, present, tmp, | |
4108 | build_empty_stmt (input_location)); | |
4109 | } | |
4110 | } | |
617125a6 | 4111 | else |
4112 | tmp = NULL_TREE; | |
4113 | } | |
da2c4122 | 4114 | else |
4115 | gfc_restore_backend_locus (&loc); | |
908e9973 | 4116 | |
4117 | /* Deallocate when leaving the scope. Nullifying is not | |
4118 | needed. */ | |
afb69dbf | 4119 | if (!sym->attr.result && !sym->attr.dummy |
4120 | && !sym->ns->proc_name->attr.is_main_program) | |
d0d776fb | 4121 | { |
4122 | if (sym->ts.type == BT_CLASS | |
4123 | && CLASS_DATA (sym)->attr.codimension) | |
4124 | tmp = gfc_deallocate_with_status (descriptor, NULL_TREE, | |
4125 | NULL_TREE, NULL_TREE, | |
4126 | NULL_TREE, true, NULL, | |
4127 | true); | |
4128 | else | |
c23adf93 | 4129 | { |
4130 | gfc_expr *expr = gfc_lval_expr_from_sym (sym); | |
4131 | tmp = gfc_deallocate_scalar_with_status (se.expr, NULL_TREE, | |
4132 | true, expr, sym->ts); | |
4133 | gfc_free_expr (expr); | |
4134 | } | |
d0d776fb | 4135 | } |
afc44c79 | 4136 | if (sym->ts.type == BT_CLASS) |
4137 | { | |
4138 | /* Initialize _vptr to declared type. */ | |
a90fe829 | 4139 | gfc_symbol *vtab; |
afc44c79 | 4140 | tree rhs; |
da2c4122 | 4141 | |
4142 | gfc_save_backend_locus (&loc); | |
4143 | gfc_set_backend_locus (&sym->declared_at); | |
afc44c79 | 4144 | e = gfc_lval_expr_from_sym (sym); |
4145 | gfc_add_vptr_component (e); | |
4146 | gfc_init_se (&se, NULL); | |
4147 | se.want_pointer = 1; | |
4148 | gfc_conv_expr (&se, e); | |
4149 | gfc_free_expr (e); | |
a90fe829 | 4150 | if (UNLIMITED_POLY (sym)) |
4151 | rhs = build_int_cst (TREE_TYPE (se.expr), 0); | |
4152 | else | |
4153 | { | |
4154 | vtab = gfc_find_derived_vtab (sym->ts.u.derived); | |
4155 | rhs = gfc_build_addr_expr (TREE_TYPE (se.expr), | |
4156 | gfc_get_symbol_decl (vtab)); | |
4157 | } | |
afc44c79 | 4158 | gfc_add_modify (&init, se.expr, rhs); |
da2c4122 | 4159 | gfc_restore_backend_locus (&loc); |
afc44c79 | 4160 | } |
4161 | ||
89ac8ba1 | 4162 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); |
908e9973 | 4163 | } |
0a96a7cc | 4164 | } |
617125a6 | 4165 | else if (sym->ts.type == BT_CHARACTER && sym->ts.deferred) |
4166 | { | |
4167 | tree tmp = NULL; | |
4168 | stmtblock_t init; | |
4169 | ||
4170 | /* If we get to here, all that should be left are pointers. */ | |
4171 | gcc_assert (sym->attr.pointer); | |
4172 | ||
4173 | if (sym->attr.dummy) | |
4174 | { | |
4175 | gfc_start_block (&init); | |
4176 | ||
4177 | /* Character length passed by reference. */ | |
4178 | tmp = sym->ts.u.cl->passed_length; | |
4179 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
4180 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
4181 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, tmp); | |
4182 | /* Pass the final character length back. */ | |
4183 | if (sym->attr.intent != INTENT_IN) | |
4184 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
4185 | gfc_charlen_type_node, tmp, | |
4186 | sym->ts.u.cl->backend_decl); | |
4187 | else | |
4188 | tmp = NULL_TREE; | |
4189 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
4190 | } | |
4191 | } | |
3e715c81 | 4192 | else if (sym->ts.deferred) |
4193 | gfc_fatal_error ("Deferred type parameter not yet supported"); | |
6b3ceb4e | 4194 | else if (alloc_comp_or_fini) |
89ac8ba1 | 4195 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 4196 | else if (sym->ts.type == BT_CHARACTER) |
4197 | { | |
4671339c | 4198 | gfc_save_backend_locus (&loc); |
4ee9c684 | 4199 | gfc_set_backend_locus (&sym->declared_at); |
4200 | if (sym->attr.dummy || sym->attr.result) | |
89ac8ba1 | 4201 | gfc_trans_dummy_character (sym, sym->ts.u.cl, block); |
4ee9c684 | 4202 | else |
89ac8ba1 | 4203 | gfc_trans_auto_character_variable (sym, block); |
4671339c | 4204 | gfc_restore_backend_locus (&loc); |
4ee9c684 | 4205 | } |
c8f1568f | 4206 | else if (sym->attr.assign) |
4207 | { | |
4671339c | 4208 | gfc_save_backend_locus (&loc); |
c8f1568f | 4209 | gfc_set_backend_locus (&sym->declared_at); |
89ac8ba1 | 4210 | gfc_trans_assign_aux_var (sym, block); |
4671339c | 4211 | gfc_restore_backend_locus (&loc); |
c8f1568f | 4212 | } |
f0d4969f | 4213 | else if (sym->ts.type == BT_DERIVED |
4214 | && sym->value | |
4215 | && !sym->attr.data | |
4216 | && sym->attr.save == SAVE_NONE) | |
c5faa799 | 4217 | { |
4218 | gfc_start_block (&tmpblock); | |
4219 | gfc_init_default_dt (sym, &tmpblock, false); | |
89ac8ba1 | 4220 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), |
c5faa799 | 4221 | NULL_TREE); |
4222 | } | |
a90fe829 | 4223 | else if (!(UNLIMITED_POLY(sym))) |
22d678e8 | 4224 | gcc_unreachable (); |
4ee9c684 | 4225 | } |
4226 | ||
c5faa799 | 4227 | gfc_init_block (&tmpblock); |
d4163395 | 4228 | |
6777213b | 4229 | for (f = gfc_sym_get_dummy_args (proc_sym); f; f = f->next) |
1e853e89 | 4230 | { |
4231 | if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER) | |
4232 | { | |
eeebe20b | 4233 | gcc_assert (f->sym->ts.u.cl->backend_decl != NULL); |
4234 | if (TREE_CODE (f->sym->ts.u.cl->backend_decl) == PARM_DECL) | |
c5faa799 | 4235 | gfc_trans_vla_type_sizes (f->sym, &tmpblock); |
1e853e89 | 4236 | } |
1e853e89 | 4237 | } |
d4163395 | 4238 | |
4239 | if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER | |
4240 | && current_fake_result_decl != NULL) | |
4241 | { | |
eeebe20b | 4242 | gcc_assert (proc_sym->ts.u.cl->backend_decl != NULL); |
4243 | if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == PARM_DECL) | |
c5faa799 | 4244 | gfc_trans_vla_type_sizes (proc_sym, &tmpblock); |
d4163395 | 4245 | } |
4246 | ||
89ac8ba1 | 4247 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), NULL_TREE); |
4ee9c684 | 4248 | } |
4249 | ||
2ef51f0e | 4250 | struct module_hasher : ggc_hasher<module_htab_entry *> |
df4d540f | 4251 | { |
2ef51f0e | 4252 | typedef const char *compare_type; |
df4d540f | 4253 | |
2ef51f0e | 4254 | static hashval_t hash (module_htab_entry *s) { return htab_hash_string (s); } |
4255 | static bool | |
4256 | equal (module_htab_entry *a, const char *b) | |
4257 | { | |
4258 | return !strcmp (a->name, b); | |
4259 | } | |
4260 | }; | |
4261 | ||
4262 | static GTY (()) hash_table<module_hasher> *module_htab; | |
df4d540f | 4263 | |
4264 | /* Hash and equality functions for module_htab's decls. */ | |
4265 | ||
2ef51f0e | 4266 | hashval_t |
4267 | module_decl_hasher::hash (tree t) | |
df4d540f | 4268 | { |
df4d540f | 4269 | const_tree n = DECL_NAME (t); |
4270 | if (n == NULL_TREE) | |
4271 | n = TYPE_NAME (TREE_TYPE (t)); | |
8f1e8e0e | 4272 | return htab_hash_string (IDENTIFIER_POINTER (n)); |
df4d540f | 4273 | } |
4274 | ||
2ef51f0e | 4275 | bool |
4276 | module_decl_hasher::equal (tree t1, const char *x2) | |
df4d540f | 4277 | { |
df4d540f | 4278 | const_tree n1 = DECL_NAME (t1); |
4279 | if (n1 == NULL_TREE) | |
4280 | n1 = TYPE_NAME (TREE_TYPE (t1)); | |
2ef51f0e | 4281 | return strcmp (IDENTIFIER_POINTER (n1), x2) == 0; |
df4d540f | 4282 | } |
4283 | ||
4284 | struct module_htab_entry * | |
4285 | gfc_find_module (const char *name) | |
4286 | { | |
df4d540f | 4287 | if (! module_htab) |
2ef51f0e | 4288 | module_htab = hash_table<module_hasher>::create_ggc (10); |
df4d540f | 4289 | |
2ef51f0e | 4290 | module_htab_entry **slot |
4291 | = module_htab->find_slot_with_hash (name, htab_hash_string (name), INSERT); | |
df4d540f | 4292 | if (*slot == NULL) |
4293 | { | |
25a27413 | 4294 | module_htab_entry *entry = ggc_cleared_alloc<module_htab_entry> (); |
df4d540f | 4295 | |
4296 | entry->name = gfc_get_string (name); | |
2ef51f0e | 4297 | entry->decls = hash_table<module_decl_hasher>::create_ggc (10); |
4298 | *slot = entry; | |
df4d540f | 4299 | } |
2ef51f0e | 4300 | return *slot; |
df4d540f | 4301 | } |
4302 | ||
4303 | void | |
4304 | gfc_module_add_decl (struct module_htab_entry *entry, tree decl) | |
4305 | { | |
df4d540f | 4306 | const char *name; |
4307 | ||
4308 | if (DECL_NAME (decl)) | |
4309 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
4310 | else | |
4311 | { | |
4312 | gcc_assert (TREE_CODE (decl) == TYPE_DECL); | |
4313 | name = IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))); | |
4314 | } | |
2ef51f0e | 4315 | tree *slot |
4316 | = entry->decls->find_slot_with_hash (name, htab_hash_string (name), | |
4317 | INSERT); | |
df4d540f | 4318 | if (*slot == NULL) |
2ef51f0e | 4319 | *slot = decl; |
df4d540f | 4320 | } |
4321 | ||
4322 | static struct module_htab_entry *cur_module; | |
4ee9c684 | 4323 | |
c40a5c1b | 4324 | |
4325 | /* Generate debugging symbols for namelists. This function must come after | |
4326 | generate_local_decl to ensure that the variables in the namelist are | |
4327 | already declared. */ | |
4328 | ||
4329 | static tree | |
4330 | generate_namelist_decl (gfc_symbol * sym) | |
4331 | { | |
4332 | gfc_namelist *nml; | |
4333 | tree decl; | |
4334 | vec<constructor_elt, va_gc> *nml_decls = NULL; | |
4335 | ||
4336 | gcc_assert (sym->attr.flavor == FL_NAMELIST); | |
4337 | for (nml = sym->namelist; nml; nml = nml->next) | |
4338 | { | |
4339 | if (nml->sym->backend_decl == NULL_TREE) | |
4340 | { | |
4341 | nml->sym->attr.referenced = 1; | |
4342 | nml->sym->backend_decl = gfc_get_symbol_decl (nml->sym); | |
4343 | } | |
0a32260c | 4344 | DECL_IGNORED_P (nml->sym->backend_decl) = 0; |
c40a5c1b | 4345 | CONSTRUCTOR_APPEND_ELT (nml_decls, NULL_TREE, nml->sym->backend_decl); |
4346 | } | |
4347 | ||
4348 | decl = make_node (NAMELIST_DECL); | |
4349 | TREE_TYPE (decl) = void_type_node; | |
4350 | NAMELIST_DECL_ASSOCIATED_DECL (decl) = build_constructor (NULL_TREE, nml_decls); | |
4351 | DECL_NAME (decl) = get_identifier (sym->name); | |
4352 | return decl; | |
4353 | } | |
4354 | ||
4355 | ||
4ee9c684 | 4356 | /* Output an initialized decl for a module variable. */ |
4357 | ||
4358 | static void | |
4359 | gfc_create_module_variable (gfc_symbol * sym) | |
4360 | { | |
4361 | tree decl; | |
4ee9c684 | 4362 | |
d77f260f | 4363 | /* Module functions with alternate entries are dealt with later and |
4364 | would get caught by the next condition. */ | |
4365 | if (sym->attr.entry) | |
4366 | return; | |
4367 | ||
c5d33754 | 4368 | /* Make sure we convert the types of the derived types from iso_c_binding |
4369 | into (void *). */ | |
4370 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
4371 | && sym->ts.type == BT_DERIVED) | |
4372 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
4373 | ||
df4d540f | 4374 | if (sym->attr.flavor == FL_DERIVED |
4375 | && sym->backend_decl | |
4376 | && TREE_CODE (sym->backend_decl) == RECORD_TYPE) | |
4377 | { | |
4378 | decl = sym->backend_decl; | |
4379 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
9f1470cb | 4380 | |
044bbd71 | 4381 | if (!sym->attr.use_assoc) |
9f1470cb | 4382 | { |
4383 | gcc_assert (TYPE_CONTEXT (decl) == NULL_TREE | |
4384 | || TYPE_CONTEXT (decl) == sym->ns->proc_name->backend_decl); | |
4385 | gcc_assert (DECL_CONTEXT (TYPE_STUB_DECL (decl)) == NULL_TREE | |
4386 | || DECL_CONTEXT (TYPE_STUB_DECL (decl)) | |
4387 | == sym->ns->proc_name->backend_decl); | |
4388 | } | |
df4d540f | 4389 | TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl; |
4390 | DECL_CONTEXT (TYPE_STUB_DECL (decl)) = sym->ns->proc_name->backend_decl; | |
4391 | gfc_module_add_decl (cur_module, TYPE_STUB_DECL (decl)); | |
4392 | } | |
4393 | ||
cf269acc | 4394 | /* Only output variables, procedure pointers and array valued, |
4395 | or derived type, parameters. */ | |
4ee9c684 | 4396 | if (sym->attr.flavor != FL_VARIABLE |
be0f1581 | 4397 | && !(sym->attr.flavor == FL_PARAMETER |
cf269acc | 4398 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) |
4399 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.proc_pointer)) | |
4ee9c684 | 4400 | return; |
4401 | ||
df4d540f | 4402 | if ((sym->attr.in_common || sym->attr.in_equivalence) && sym->backend_decl) |
4403 | { | |
4404 | decl = sym->backend_decl; | |
16a40513 | 4405 | gcc_assert (DECL_FILE_SCOPE_P (decl)); |
df4d540f | 4406 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); |
4407 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4408 | gfc_module_add_decl (cur_module, decl); | |
4409 | } | |
4410 | ||
d43a7f7f | 4411 | /* Don't generate variables from other modules. Variables from |
cd958916 | 4412 | COMMONs and Cray pointees will already have been generated. */ |
4413 | if (sym->attr.use_assoc || sym->attr.in_common || sym->attr.cray_pointee) | |
4ee9c684 | 4414 | return; |
4415 | ||
2b685f8e | 4416 | /* Equivalenced variables arrive here after creation. */ |
976d903a | 4417 | if (sym->backend_decl |
df4d540f | 4418 | && (sym->equiv_built || sym->attr.in_equivalence)) |
4419 | return; | |
2b685f8e | 4420 | |
23d075f4 | 4421 | if (sym->backend_decl && !sym->attr.vtab && !sym->attr.target) |
382ad5c3 | 4422 | gfc_internal_error ("backend decl for module variable %qs already exists", |
4423 | sym->name); | |
4ee9c684 | 4424 | |
92983bfd | 4425 | if (sym->module && !sym->attr.result && !sym->attr.dummy |
4426 | && (sym->attr.access == ACCESS_UNKNOWN | |
4427 | && (sym->ns->default_access == ACCESS_PRIVATE | |
4428 | || (sym->ns->default_access == ACCESS_UNKNOWN | |
4429 | && gfc_option.flag_module_private)))) | |
4430 | sym->attr.access = ACCESS_PRIVATE; | |
4431 | ||
4432 | if (warn_unused_variable && !sym->attr.referenced | |
4433 | && sym->attr.access == ACCESS_PRIVATE) | |
4166acc7 | 4434 | gfc_warning (OPT_Wunused_value, |
4435 | "Unused PRIVATE module variable %qs declared at %L", | |
92983bfd | 4436 | sym->name, &sym->declared_at); |
4437 | ||
4ee9c684 | 4438 | /* We always want module variables to be created. */ |
4439 | sym->attr.referenced = 1; | |
4440 | /* Create the decl. */ | |
4441 | decl = gfc_get_symbol_decl (sym); | |
4442 | ||
4ee9c684 | 4443 | /* Create the variable. */ |
4444 | pushdecl (decl); | |
df4d540f | 4445 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); |
4446 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
b2c4af5e | 4447 | rest_of_decl_compilation (decl, 1, 0); |
df4d540f | 4448 | gfc_module_add_decl (cur_module, decl); |
4ee9c684 | 4449 | |
4450 | /* Also add length of strings. */ | |
4451 | if (sym->ts.type == BT_CHARACTER) | |
4452 | { | |
4453 | tree length; | |
4454 | ||
eeebe20b | 4455 | length = sym->ts.u.cl->backend_decl; |
cf4b41d8 | 4456 | gcc_assert (length || sym->attr.proc_pointer); |
4457 | if (length && !INTEGER_CST_P (length)) | |
4ee9c684 | 4458 | { |
4459 | pushdecl (length); | |
b2c4af5e | 4460 | rest_of_decl_compilation (length, 1, 0); |
4ee9c684 | 4461 | } |
4462 | } | |
a961ca30 | 4463 | |
4464 | if (sym->attr.codimension && !sym->attr.dummy && !sym->attr.allocatable | |
4465 | && sym->attr.referenced && !sym->attr.use_assoc) | |
4466 | has_coarray_vars = true; | |
4ee9c684 | 4467 | } |
4468 | ||
51d9479b | 4469 | /* Emit debug information for USE statements. */ |
df4d540f | 4470 | |
4471 | static void | |
4472 | gfc_trans_use_stmts (gfc_namespace * ns) | |
4473 | { | |
4474 | gfc_use_list *use_stmt; | |
4475 | for (use_stmt = ns->use_stmts; use_stmt; use_stmt = use_stmt->next) | |
4476 | { | |
4477 | struct module_htab_entry *entry | |
4478 | = gfc_find_module (use_stmt->module_name); | |
4479 | gfc_use_rename *rent; | |
4480 | ||
4481 | if (entry->namespace_decl == NULL) | |
4482 | { | |
4483 | entry->namespace_decl | |
e60a6f7b | 4484 | = build_decl (input_location, |
4485 | NAMESPACE_DECL, | |
df4d540f | 4486 | get_identifier (use_stmt->module_name), |
4487 | void_type_node); | |
4488 | DECL_EXTERNAL (entry->namespace_decl) = 1; | |
4489 | } | |
51d9479b | 4490 | gfc_set_backend_locus (&use_stmt->where); |
df4d540f | 4491 | if (!use_stmt->only_flag) |
4492 | (*debug_hooks->imported_module_or_decl) (entry->namespace_decl, | |
4493 | NULL_TREE, | |
4494 | ns->proc_name->backend_decl, | |
4495 | false); | |
4496 | for (rent = use_stmt->rename; rent; rent = rent->next) | |
4497 | { | |
4498 | tree decl, local_name; | |
df4d540f | 4499 | |
4500 | if (rent->op != INTRINSIC_NONE) | |
4501 | continue; | |
4502 | ||
2ef51f0e | 4503 | hashval_t hash = htab_hash_string (rent->use_name); |
4504 | tree *slot = entry->decls->find_slot_with_hash (rent->use_name, hash, | |
4505 | INSERT); | |
df4d540f | 4506 | if (*slot == NULL) |
4507 | { | |
4508 | gfc_symtree *st; | |
4509 | ||
4510 | st = gfc_find_symtree (ns->sym_root, | |
4511 | rent->local_name[0] | |
4512 | ? rent->local_name : rent->use_name); | |
c2958b6b | 4513 | |
4514 | /* The following can happen if a derived type is renamed. */ | |
4515 | if (!st) | |
4516 | { | |
4517 | char *name; | |
4518 | name = xstrdup (rent->local_name[0] | |
4519 | ? rent->local_name : rent->use_name); | |
4520 | name[0] = (char) TOUPPER ((unsigned char) name[0]); | |
4521 | st = gfc_find_symtree (ns->sym_root, name); | |
4522 | free (name); | |
4523 | gcc_assert (st); | |
4524 | } | |
857c96ba | 4525 | |
4526 | /* Sometimes, generic interfaces wind up being over-ruled by a | |
4527 | local symbol (see PR41062). */ | |
4528 | if (!st->n.sym->attr.use_assoc) | |
4529 | continue; | |
4530 | ||
51d9479b | 4531 | if (st->n.sym->backend_decl |
4532 | && DECL_P (st->n.sym->backend_decl) | |
4533 | && st->n.sym->module | |
4534 | && strcmp (st->n.sym->module, use_stmt->module_name) == 0) | |
df4d540f | 4535 | { |
51d9479b | 4536 | gcc_assert (DECL_EXTERNAL (entry->namespace_decl) |
4537 | || (TREE_CODE (st->n.sym->backend_decl) | |
4538 | != VAR_DECL)); | |
df4d540f | 4539 | decl = copy_node (st->n.sym->backend_decl); |
4540 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
4541 | DECL_EXTERNAL (decl) = 1; | |
4542 | DECL_IGNORED_P (decl) = 0; | |
4543 | DECL_INITIAL (decl) = NULL_TREE; | |
4544 | } | |
c40a5c1b | 4545 | else if (st->n.sym->attr.flavor == FL_NAMELIST |
4546 | && st->n.sym->attr.use_only | |
4547 | && st->n.sym->module | |
4548 | && strcmp (st->n.sym->module, use_stmt->module_name) | |
4549 | == 0) | |
4550 | { | |
4551 | decl = generate_namelist_decl (st->n.sym); | |
4552 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
4553 | DECL_EXTERNAL (decl) = 1; | |
4554 | DECL_IGNORED_P (decl) = 0; | |
4555 | DECL_INITIAL (decl) = NULL_TREE; | |
4556 | } | |
df4d540f | 4557 | else |
4558 | { | |
4559 | *slot = error_mark_node; | |
2ef51f0e | 4560 | entry->decls->clear_slot (slot); |
df4d540f | 4561 | continue; |
4562 | } | |
4563 | *slot = decl; | |
4564 | } | |
4565 | decl = (tree) *slot; | |
4566 | if (rent->local_name[0]) | |
4567 | local_name = get_identifier (rent->local_name); | |
4568 | else | |
4569 | local_name = NULL_TREE; | |
51d9479b | 4570 | gfc_set_backend_locus (&rent->where); |
df4d540f | 4571 | (*debug_hooks->imported_module_or_decl) (decl, local_name, |
4572 | ns->proc_name->backend_decl, | |
4573 | !use_stmt->only_flag); | |
4574 | } | |
4575 | } | |
4ee9c684 | 4576 | } |
4577 | ||
51d9479b | 4578 | |
2eb674c9 | 4579 | /* Return true if expr is a constant initializer that gfc_conv_initializer |
4580 | will handle. */ | |
4581 | ||
4582 | static bool | |
4583 | check_constant_initializer (gfc_expr *expr, gfc_typespec *ts, bool array, | |
4584 | bool pointer) | |
4585 | { | |
4586 | gfc_constructor *c; | |
4587 | gfc_component *cm; | |
4588 | ||
4589 | if (pointer) | |
4590 | return true; | |
4591 | else if (array) | |
4592 | { | |
4593 | if (expr->expr_type == EXPR_CONSTANT || expr->expr_type == EXPR_NULL) | |
4594 | return true; | |
4595 | else if (expr->expr_type == EXPR_STRUCTURE) | |
4596 | return check_constant_initializer (expr, ts, false, false); | |
4597 | else if (expr->expr_type != EXPR_ARRAY) | |
4598 | return false; | |
126387b5 | 4599 | for (c = gfc_constructor_first (expr->value.constructor); |
4600 | c; c = gfc_constructor_next (c)) | |
2eb674c9 | 4601 | { |
4602 | if (c->iterator) | |
4603 | return false; | |
4604 | if (c->expr->expr_type == EXPR_STRUCTURE) | |
4605 | { | |
4606 | if (!check_constant_initializer (c->expr, ts, false, false)) | |
4607 | return false; | |
4608 | } | |
4609 | else if (c->expr->expr_type != EXPR_CONSTANT) | |
4610 | return false; | |
4611 | } | |
4612 | return true; | |
4613 | } | |
4614 | else switch (ts->type) | |
4615 | { | |
4616 | case BT_DERIVED: | |
4617 | if (expr->expr_type != EXPR_STRUCTURE) | |
4618 | return false; | |
eeebe20b | 4619 | cm = expr->ts.u.derived->components; |
126387b5 | 4620 | for (c = gfc_constructor_first (expr->value.constructor); |
4621 | c; c = gfc_constructor_next (c), cm = cm->next) | |
2eb674c9 | 4622 | { |
4623 | if (!c->expr || cm->attr.allocatable) | |
4624 | continue; | |
4625 | if (!check_constant_initializer (c->expr, &cm->ts, | |
4626 | cm->attr.dimension, | |
4627 | cm->attr.pointer)) | |
4628 | return false; | |
4629 | } | |
4630 | return true; | |
4631 | default: | |
4632 | return expr->expr_type == EXPR_CONSTANT; | |
4633 | } | |
4634 | } | |
4635 | ||
4636 | /* Emit debug info for parameters and unreferenced variables with | |
4637 | initializers. */ | |
4638 | ||
4639 | static void | |
4640 | gfc_emit_parameter_debug_info (gfc_symbol *sym) | |
4641 | { | |
4642 | tree decl; | |
4643 | ||
4644 | if (sym->attr.flavor != FL_PARAMETER | |
4645 | && (sym->attr.flavor != FL_VARIABLE || sym->attr.referenced)) | |
4646 | return; | |
4647 | ||
4648 | if (sym->backend_decl != NULL | |
4649 | || sym->value == NULL | |
4650 | || sym->attr.use_assoc | |
4651 | || sym->attr.dummy | |
4652 | || sym->attr.result | |
4653 | || sym->attr.function | |
4654 | || sym->attr.intrinsic | |
4655 | || sym->attr.pointer | |
4656 | || sym->attr.allocatable | |
4657 | || sym->attr.cray_pointee | |
4658 | || sym->attr.threadprivate | |
4659 | || sym->attr.is_bind_c | |
4660 | || sym->attr.subref_array_pointer | |
4661 | || sym->attr.assign) | |
4662 | return; | |
4663 | ||
4664 | if (sym->ts.type == BT_CHARACTER) | |
4665 | { | |
eeebe20b | 4666 | gfc_conv_const_charlen (sym->ts.u.cl); |
4667 | if (sym->ts.u.cl->backend_decl == NULL | |
4668 | || TREE_CODE (sym->ts.u.cl->backend_decl) != INTEGER_CST) | |
2eb674c9 | 4669 | return; |
4670 | } | |
eeebe20b | 4671 | else if (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
2eb674c9 | 4672 | return; |
4673 | ||
4674 | if (sym->as) | |
4675 | { | |
4676 | int n; | |
4677 | ||
4678 | if (sym->as->type != AS_EXPLICIT) | |
4679 | return; | |
4680 | for (n = 0; n < sym->as->rank; n++) | |
4681 | if (sym->as->lower[n]->expr_type != EXPR_CONSTANT | |
4682 | || sym->as->upper[n] == NULL | |
4683 | || sym->as->upper[n]->expr_type != EXPR_CONSTANT) | |
4684 | return; | |
4685 | } | |
4686 | ||
4687 | if (!check_constant_initializer (sym->value, &sym->ts, | |
4688 | sym->attr.dimension, false)) | |
4689 | return; | |
4690 | ||
a961ca30 | 4691 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && sym->attr.codimension) |
4692 | return; | |
4693 | ||
2eb674c9 | 4694 | /* Create the decl for the variable or constant. */ |
e60a6f7b | 4695 | decl = build_decl (input_location, |
4696 | sym->attr.flavor == FL_PARAMETER ? CONST_DECL : VAR_DECL, | |
2eb674c9 | 4697 | gfc_sym_identifier (sym), gfc_sym_type (sym)); |
4698 | if (sym->attr.flavor == FL_PARAMETER) | |
4699 | TREE_READONLY (decl) = 1; | |
4700 | gfc_set_decl_location (decl, &sym->declared_at); | |
4701 | if (sym->attr.dimension) | |
4702 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
4703 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4704 | TREE_STATIC (decl) = 1; | |
4705 | TREE_USED (decl) = 1; | |
4706 | if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
4707 | TREE_PUBLIC (decl) = 1; | |
802532b9 | 4708 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
4709 | TREE_TYPE (decl), | |
4710 | sym->attr.dimension, | |
4711 | false, false); | |
72b4d83e | 4712 | debug_hooks->global_decl (decl); |
2eb674c9 | 4713 | } |
4714 | ||
a961ca30 | 4715 | |
4716 | static void | |
4717 | generate_coarray_sym_init (gfc_symbol *sym) | |
4718 | { | |
4719 | tree tmp, size, decl, token; | |
498b946e | 4720 | bool is_lock_type; |
4721 | int reg_type; | |
a961ca30 | 4722 | |
4723 | if (sym->attr.dummy || sym->attr.allocatable || !sym->attr.codimension | |
102abea2 | 4724 | || sym->attr.use_assoc || !sym->attr.referenced |
4725 | || sym->attr.select_type_temporary) | |
a961ca30 | 4726 | return; |
4727 | ||
4728 | decl = sym->backend_decl; | |
4729 | TREE_USED(decl) = 1; | |
4730 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (decl))); | |
4731 | ||
498b946e | 4732 | is_lock_type = sym->ts.type == BT_DERIVED |
4733 | && sym->ts.u.derived->from_intmod == INTMOD_ISO_FORTRAN_ENV | |
4734 | && sym->ts.u.derived->intmod_sym_id == ISOFORTRAN_LOCK_TYPE; | |
4735 | ||
a961ca30 | 4736 | /* FIXME: Workaround for PR middle-end/49106, cf. also PR middle-end/49108 |
4737 | to make sure the variable is not optimized away. */ | |
4738 | DECL_PRESERVE_P (DECL_CONTEXT (decl)) = 1; | |
4739 | ||
498b946e | 4740 | /* For lock types, we pass the array size as only the library knows the |
4741 | size of the variable. */ | |
4742 | if (is_lock_type) | |
4743 | size = gfc_index_one_node; | |
4744 | else | |
4745 | size = TYPE_SIZE_UNIT (gfc_get_element_type (TREE_TYPE (decl))); | |
a961ca30 | 4746 | |
a90fe829 | 4747 | /* Ensure that we do not have size=0 for zero-sized arrays. */ |
ee4e7a5e | 4748 | size = fold_build2_loc (input_location, MAX_EXPR, size_type_node, |
4749 | fold_convert (size_type_node, size), | |
4750 | build_int_cst (size_type_node, 1)); | |
4751 | ||
a961ca30 | 4752 | if (GFC_TYPE_ARRAY_RANK (TREE_TYPE (decl))) |
4753 | { | |
4754 | tmp = GFC_TYPE_ARRAY_SIZE (TREE_TYPE (decl)); | |
4755 | size = fold_build2_loc (input_location, MULT_EXPR, size_type_node, | |
ee4e7a5e | 4756 | fold_convert (size_type_node, tmp), size); |
a961ca30 | 4757 | } |
4758 | ||
4759 | gcc_assert (GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE (decl)) != NULL_TREE); | |
4760 | token = gfc_build_addr_expr (ppvoid_type_node, | |
4761 | GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE(decl))); | |
498b946e | 4762 | if (is_lock_type) |
4763 | reg_type = sym->attr.artificial ? GFC_CAF_CRITICAL : GFC_CAF_LOCK_STATIC; | |
4764 | else | |
4765 | reg_type = GFC_CAF_COARRAY_STATIC; | |
a961ca30 | 4766 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_register, 6, size, |
498b946e | 4767 | build_int_cst (integer_type_node, reg_type), |
a961ca30 | 4768 | token, null_pointer_node, /* token, stat. */ |
4769 | null_pointer_node, /* errgmsg, errmsg_len. */ | |
4770 | build_int_cst (integer_type_node, 0)); | |
a961ca30 | 4771 | gfc_add_modify (&caf_init_block, decl, fold_convert (TREE_TYPE (decl), tmp)); |
4772 | ||
a961ca30 | 4773 | /* Handle "static" initializer. */ |
4774 | if (sym->value) | |
4775 | { | |
4776 | sym->attr.pointer = 1; | |
4777 | tmp = gfc_trans_assignment (gfc_lval_expr_from_sym (sym), sym->value, | |
4778 | true, false); | |
4779 | sym->attr.pointer = 0; | |
4780 | gfc_add_expr_to_block (&caf_init_block, tmp); | |
4781 | } | |
4782 | } | |
4783 | ||
4784 | ||
4785 | /* Generate constructor function to initialize static, nonallocatable | |
4786 | coarrays. */ | |
4787 | ||
4788 | static void | |
4789 | generate_coarray_init (gfc_namespace * ns __attribute((unused))) | |
4790 | { | |
4791 | tree fndecl, tmp, decl, save_fn_decl; | |
4792 | ||
4793 | save_fn_decl = current_function_decl; | |
4794 | push_function_context (); | |
4795 | ||
4796 | tmp = build_function_type_list (void_type_node, NULL_TREE); | |
4797 | fndecl = build_decl (input_location, FUNCTION_DECL, | |
4798 | create_tmp_var_name ("_caf_init"), tmp); | |
4799 | ||
4800 | DECL_STATIC_CONSTRUCTOR (fndecl) = 1; | |
4801 | SET_DECL_INIT_PRIORITY (fndecl, DEFAULT_INIT_PRIORITY); | |
4802 | ||
4803 | decl = build_decl (input_location, RESULT_DECL, NULL_TREE, void_type_node); | |
4804 | DECL_ARTIFICIAL (decl) = 1; | |
4805 | DECL_IGNORED_P (decl) = 1; | |
4806 | DECL_CONTEXT (decl) = fndecl; | |
4807 | DECL_RESULT (fndecl) = decl; | |
4808 | ||
4809 | pushdecl (fndecl); | |
4810 | current_function_decl = fndecl; | |
4811 | announce_function (fndecl); | |
4812 | ||
4813 | rest_of_decl_compilation (fndecl, 0, 0); | |
4814 | make_decl_rtl (fndecl); | |
00cf115c | 4815 | allocate_struct_function (fndecl, false); |
a961ca30 | 4816 | |
cde2be84 | 4817 | pushlevel (); |
a961ca30 | 4818 | gfc_init_block (&caf_init_block); |
4819 | ||
4820 | gfc_traverse_ns (ns, generate_coarray_sym_init); | |
4821 | ||
4822 | DECL_SAVED_TREE (fndecl) = gfc_finish_block (&caf_init_block); | |
4823 | decl = getdecls (); | |
4824 | ||
cde2be84 | 4825 | poplevel (1, 1); |
a961ca30 | 4826 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; |
4827 | ||
4828 | DECL_SAVED_TREE (fndecl) | |
4829 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
4830 | DECL_INITIAL (fndecl)); | |
4831 | dump_function (TDI_original, fndecl); | |
4832 | ||
4833 | cfun->function_end_locus = input_location; | |
4834 | set_cfun (NULL); | |
4835 | ||
4836 | if (decl_function_context (fndecl)) | |
415d1b9a | 4837 | (void) cgraph_node::create (fndecl); |
a961ca30 | 4838 | else |
35ee1c66 | 4839 | cgraph_node::finalize_function (fndecl, true); |
a961ca30 | 4840 | |
4841 | pop_function_context (); | |
4842 | current_function_decl = save_fn_decl; | |
4843 | } | |
4844 | ||
4845 | ||
c40a5c1b | 4846 | static void |
4847 | create_module_nml_decl (gfc_symbol *sym) | |
4848 | { | |
4849 | if (sym->attr.flavor == FL_NAMELIST) | |
4850 | { | |
4851 | tree decl = generate_namelist_decl (sym); | |
4852 | pushdecl (decl); | |
4853 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
4854 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4855 | rest_of_decl_compilation (decl, 1, 0); | |
4856 | gfc_module_add_decl (cur_module, decl); | |
4857 | } | |
4858 | } | |
4859 | ||
4860 | ||
51d9479b | 4861 | /* Generate all the required code for module variables. */ |
4862 | ||
4863 | void | |
4864 | gfc_generate_module_vars (gfc_namespace * ns) | |
4865 | { | |
4866 | module_namespace = ns; | |
4867 | cur_module = gfc_find_module (ns->proc_name->name); | |
4868 | ||
4869 | /* Check if the frontend left the namespace in a reasonable state. */ | |
4870 | gcc_assert (ns->proc_name && !ns->proc_name->tlink); | |
4871 | ||
4872 | /* Generate COMMON blocks. */ | |
4873 | gfc_trans_common (ns); | |
4874 | ||
a961ca30 | 4875 | has_coarray_vars = false; |
4876 | ||
51d9479b | 4877 | /* Create decls for all the module variables. */ |
4878 | gfc_traverse_ns (ns, gfc_create_module_variable); | |
c40a5c1b | 4879 | gfc_traverse_ns (ns, create_module_nml_decl); |
51d9479b | 4880 | |
a961ca30 | 4881 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
4882 | generate_coarray_init (ns); | |
4883 | ||
51d9479b | 4884 | cur_module = NULL; |
4885 | ||
4886 | gfc_trans_use_stmts (ns); | |
2eb674c9 | 4887 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
51d9479b | 4888 | } |
4889 | ||
4890 | ||
4ee9c684 | 4891 | static void |
4892 | gfc_generate_contained_functions (gfc_namespace * parent) | |
4893 | { | |
4894 | gfc_namespace *ns; | |
4895 | ||
4896 | /* We create all the prototypes before generating any code. */ | |
4897 | for (ns = parent->contained; ns; ns = ns->sibling) | |
4898 | { | |
4899 | /* Skip namespaces from used modules. */ | |
4900 | if (ns->parent != parent) | |
4901 | continue; | |
4902 | ||
d896f9b3 | 4903 | gfc_create_function_decl (ns, false); |
4ee9c684 | 4904 | } |
4905 | ||
4906 | for (ns = parent->contained; ns; ns = ns->sibling) | |
4907 | { | |
4908 | /* Skip namespaces from used modules. */ | |
4909 | if (ns->parent != parent) | |
4910 | continue; | |
4911 | ||
4912 | gfc_generate_function_code (ns); | |
4913 | } | |
4914 | } | |
4915 | ||
4916 | ||
d95efb59 | 4917 | /* Drill down through expressions for the array specification bounds and |
4918 | character length calling generate_local_decl for all those variables | |
4919 | that have not already been declared. */ | |
4920 | ||
4921 | static void | |
4922 | generate_local_decl (gfc_symbol *); | |
4923 | ||
1acb400a | 4924 | /* Traverse expr, marking all EXPR_VARIABLE symbols referenced. */ |
d95efb59 | 4925 | |
1acb400a | 4926 | static bool |
4927 | expr_decls (gfc_expr *e, gfc_symbol *sym, | |
4928 | int *f ATTRIBUTE_UNUSED) | |
4929 | { | |
4930 | if (e->expr_type != EXPR_VARIABLE | |
4931 | || sym == e->symtree->n.sym | |
d95efb59 | 4932 | || e->symtree->n.sym->mark |
4933 | || e->symtree->n.sym->ns != sym->ns) | |
1acb400a | 4934 | return false; |
d95efb59 | 4935 | |
1acb400a | 4936 | generate_local_decl (e->symtree->n.sym); |
4937 | return false; | |
4938 | } | |
d95efb59 | 4939 | |
1acb400a | 4940 | static void |
4941 | generate_expr_decls (gfc_symbol *sym, gfc_expr *e) | |
4942 | { | |
4943 | gfc_traverse_expr (e, sym, expr_decls, 0); | |
d95efb59 | 4944 | } |
4945 | ||
4946 | ||
f6d0e37a | 4947 | /* Check for dependencies in the character length and array spec. */ |
d95efb59 | 4948 | |
4949 | static void | |
4950 | generate_dependency_declarations (gfc_symbol *sym) | |
4951 | { | |
4952 | int i; | |
4953 | ||
4954 | if (sym->ts.type == BT_CHARACTER | |
eeebe20b | 4955 | && sym->ts.u.cl |
4956 | && sym->ts.u.cl->length | |
4957 | && sym->ts.u.cl->length->expr_type != EXPR_CONSTANT) | |
4958 | generate_expr_decls (sym, sym->ts.u.cl->length); | |
d95efb59 | 4959 | |
4960 | if (sym->as && sym->as->rank) | |
4961 | { | |
4962 | for (i = 0; i < sym->as->rank; i++) | |
4963 | { | |
4964 | generate_expr_decls (sym, sym->as->lower[i]); | |
4965 | generate_expr_decls (sym, sym->as->upper[i]); | |
4966 | } | |
4967 | } | |
4968 | } | |
4969 | ||
4970 | ||
4ee9c684 | 4971 | /* Generate decls for all local variables. We do this to ensure correct |
4972 | handling of expressions which only appear in the specification of | |
4973 | other functions. */ | |
4974 | ||
4975 | static void | |
4976 | generate_local_decl (gfc_symbol * sym) | |
4977 | { | |
4978 | if (sym->attr.flavor == FL_VARIABLE) | |
4979 | { | |
a961ca30 | 4980 | if (sym->attr.codimension && !sym->attr.dummy && !sym->attr.allocatable |
4981 | && sym->attr.referenced && !sym->attr.use_assoc) | |
4982 | has_coarray_vars = true; | |
4983 | ||
d95efb59 | 4984 | if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master) |
8714fc76 | 4985 | generate_dependency_declarations (sym); |
d95efb59 | 4986 | |
4ee9c684 | 4987 | if (sym->attr.referenced) |
8714fc76 | 4988 | gfc_get_symbol_decl (sym); |
4acad347 | 4989 | |
4990 | /* Warnings for unused dummy arguments. */ | |
6992b8c8 | 4991 | else if (sym->attr.dummy && !sym->attr.in_namelist) |
7c0ca46e | 4992 | { |
4acad347 | 4993 | /* INTENT(out) dummy arguments are likely meant to be set. */ |
8290d53f | 4994 | if (warn_unused_dummy_argument && sym->attr.intent == INTENT_OUT) |
4acad347 | 4995 | { |
4996 | if (sym->ts.type != BT_DERIVED) | |
4166acc7 | 4997 | gfc_warning (OPT_Wunused_dummy_argument, |
4998 | "Dummy argument %qs at %L was declared " | |
4acad347 | 4999 | "INTENT(OUT) but was not set", sym->name, |
5000 | &sym->declared_at); | |
48cb4748 | 5001 | else if (!gfc_has_default_initializer (sym->ts.u.derived) |
5002 | && !sym->ts.u.derived->attr.zero_comp) | |
4166acc7 | 5003 | gfc_warning (OPT_Wunused_dummy_argument, |
5004 | "Derived-type dummy argument %qs at %L was " | |
4acad347 | 5005 | "declared INTENT(OUT) but was not set and " |
5006 | "does not have a default initializer", | |
5007 | sym->name, &sym->declared_at); | |
90a4a5a6 | 5008 | if (sym->backend_decl != NULL_TREE) |
5009 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4acad347 | 5010 | } |
8290d53f | 5011 | else if (warn_unused_dummy_argument) |
90a4a5a6 | 5012 | { |
4166acc7 | 5013 | gfc_warning (OPT_Wunused_dummy_argument, |
5014 | "Unused dummy argument %qs at %L", sym->name, | |
5015 | &sym->declared_at); | |
90a4a5a6 | 5016 | if (sym->backend_decl != NULL_TREE) |
5017 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
5018 | } | |
7c0ca46e | 5019 | } |
4acad347 | 5020 | |
f888a3fb | 5021 | /* Warn for unused variables, but not if they're inside a common |
1dbfac29 | 5022 | block or a namelist. */ |
36609028 | 5023 | else if (warn_unused_variable |
1dbfac29 | 5024 | && !(sym->attr.in_common || sym->mark || sym->attr.in_namelist)) |
90a4a5a6 | 5025 | { |
1dbfac29 | 5026 | if (sym->attr.use_only) |
5027 | { | |
4166acc7 | 5028 | gfc_warning (OPT_Wunused_variable, |
5029 | "Unused module variable %qs which has been " | |
1dbfac29 | 5030 | "explicitly imported at %L", sym->name, |
5031 | &sym->declared_at); | |
5032 | if (sym->backend_decl != NULL_TREE) | |
5033 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
5034 | } | |
5035 | else if (!sym->attr.use_assoc) | |
5036 | { | |
4166acc7 | 5037 | gfc_warning (OPT_Wunused_variable, |
5038 | "Unused variable %qs declared at %L", | |
1dbfac29 | 5039 | sym->name, &sym->declared_at); |
5040 | if (sym->backend_decl != NULL_TREE) | |
5041 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
5042 | } | |
90a4a5a6 | 5043 | } |
8714fc76 | 5044 | |
d4163395 | 5045 | /* For variable length CHARACTER parameters, the PARM_DECL already |
5046 | references the length variable, so force gfc_get_symbol_decl | |
5047 | even when not referenced. If optimize > 0, it will be optimized | |
5048 | away anyway. But do this only after emitting -Wunused-parameter | |
5049 | warning if requested. */ | |
8714fc76 | 5050 | if (sym->attr.dummy && !sym->attr.referenced |
5051 | && sym->ts.type == BT_CHARACTER | |
eeebe20b | 5052 | && sym->ts.u.cl->backend_decl != NULL |
5053 | && TREE_CODE (sym->ts.u.cl->backend_decl) == VAR_DECL) | |
d4163395 | 5054 | { |
5055 | sym->attr.referenced = 1; | |
5056 | gfc_get_symbol_decl (sym); | |
5057 | } | |
76776e6d | 5058 | |
d0163401 | 5059 | /* INTENT(out) dummy arguments and result variables with allocatable |
5060 | components are reset by default and need to be set referenced to | |
5061 | generate the code for nullification and automatic lengths. */ | |
5062 | if (!sym->attr.referenced | |
8714fc76 | 5063 | && sym->ts.type == BT_DERIVED |
eeebe20b | 5064 | && sym->ts.u.derived->attr.alloc_comp |
c49db15e | 5065 | && !sym->attr.pointer |
d0163401 | 5066 | && ((sym->attr.dummy && sym->attr.intent == INTENT_OUT) |
5067 | || | |
5068 | (sym->attr.result && sym != sym->result))) | |
8714fc76 | 5069 | { |
5070 | sym->attr.referenced = 1; | |
5071 | gfc_get_symbol_decl (sym); | |
5072 | } | |
5073 | ||
e72f979a | 5074 | /* Check for dependencies in the array specification and string |
5075 | length, adding the necessary declarations to the function. We | |
5076 | mark the symbol now, as well as in traverse_ns, to prevent | |
5077 | getting stuck in a circular dependency. */ | |
5078 | sym->mark = 1; | |
4ee9c684 | 5079 | } |
5dd246c1 | 5080 | else if (sym->attr.flavor == FL_PARAMETER) |
5081 | { | |
6ecfe89d | 5082 | if (warn_unused_parameter |
f326eb81 | 5083 | && !sym->attr.referenced) |
5084 | { | |
5085 | if (!sym->attr.use_assoc) | |
4166acc7 | 5086 | gfc_warning (OPT_Wunused_parameter, |
5087 | "Unused parameter %qs declared at %L", sym->name, | |
f326eb81 | 5088 | &sym->declared_at); |
5089 | else if (sym->attr.use_only) | |
4166acc7 | 5090 | gfc_warning (OPT_Wunused_parameter, |
5091 | "Unused parameter %qs which has been explicitly " | |
f326eb81 | 5092 | "imported at %L", sym->name, &sym->declared_at); |
5093 | } | |
5dd246c1 | 5094 | } |
fa7b6574 | 5095 | else if (sym->attr.flavor == FL_PROCEDURE) |
5096 | { | |
5097 | /* TODO: move to the appropriate place in resolve.c. */ | |
5098 | if (warn_return_type | |
5099 | && sym->attr.function | |
5100 | && sym->result | |
5101 | && sym != sym->result | |
5102 | && !sym->result->attr.referenced | |
5103 | && !sym->attr.use_assoc | |
5104 | && sym->attr.if_source != IFSRC_IFBODY) | |
5105 | { | |
4166acc7 | 5106 | gfc_warning (OPT_Wreturn_type, |
5107 | "Return value %qs of function %qs declared at " | |
fa7b6574 | 5108 | "%L not set", sym->result->name, sym->name, |
5109 | &sym->result->declared_at); | |
5110 | ||
5111 | /* Prevents "Unused variable" warning for RESULT variables. */ | |
e72f979a | 5112 | sym->result->mark = 1; |
fa7b6574 | 5113 | } |
5114 | } | |
c5d33754 | 5115 | |
19ba2ad8 | 5116 | if (sym->attr.dummy == 1) |
5117 | { | |
5118 | /* Modify the tree type for scalar character dummy arguments of bind(c) | |
5119 | procedures if they are passed by value. The tree type for them will | |
5120 | be promoted to INTEGER_TYPE for the middle end, which appears to be | |
5121 | what C would do with characters passed by-value. The value attribute | |
5122 | implies the dummy is a scalar. */ | |
5123 | if (sym->attr.value == 1 && sym->backend_decl != NULL | |
5124 | && sym->ts.type == BT_CHARACTER && sym->ts.is_c_interop | |
5125 | && sym->ns->proc_name != NULL && sym->ns->proc_name->attr.is_bind_c) | |
4c47c8b7 | 5126 | gfc_conv_scalar_char_value (sym, NULL, NULL); |
fc6338c7 | 5127 | |
5128 | /* Unused procedure passed as dummy argument. */ | |
5129 | if (sym->attr.flavor == FL_PROCEDURE) | |
5130 | { | |
5131 | if (!sym->attr.referenced) | |
5132 | { | |
8290d53f | 5133 | if (warn_unused_dummy_argument) |
4166acc7 | 5134 | gfc_warning (OPT_Wunused_dummy_argument, |
5135 | "Unused dummy argument %qs at %L", sym->name, | |
a90fe829 | 5136 | &sym->declared_at); |
fc6338c7 | 5137 | } |
5138 | ||
5139 | /* Silence bogus "unused parameter" warnings from the | |
5140 | middle end. */ | |
5141 | if (sym->backend_decl != NULL_TREE) | |
5142 | TREE_NO_WARNING (sym->backend_decl) = 1; | |
5143 | } | |
19ba2ad8 | 5144 | } |
5145 | ||
c5d33754 | 5146 | /* Make sure we convert the types of the derived types from iso_c_binding |
5147 | into (void *). */ | |
5148 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
5149 | && sym->ts.type == BT_DERIVED) | |
5150 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
4ee9c684 | 5151 | } |
5152 | ||
c40a5c1b | 5153 | |
5154 | static void | |
5155 | generate_local_nml_decl (gfc_symbol * sym) | |
5156 | { | |
5157 | if (sym->attr.flavor == FL_NAMELIST && !sym->attr.use_assoc) | |
5158 | { | |
5159 | tree decl = generate_namelist_decl (sym); | |
5160 | pushdecl (decl); | |
5161 | } | |
5162 | } | |
5163 | ||
5164 | ||
4ee9c684 | 5165 | static void |
5166 | generate_local_vars (gfc_namespace * ns) | |
5167 | { | |
5168 | gfc_traverse_ns (ns, generate_local_decl); | |
c40a5c1b | 5169 | gfc_traverse_ns (ns, generate_local_nml_decl); |
4ee9c684 | 5170 | } |
5171 | ||
5172 | ||
1b716045 | 5173 | /* Generate a switch statement to jump to the correct entry point. Also |
5174 | creates the label decls for the entry points. */ | |
4ee9c684 | 5175 | |
1b716045 | 5176 | static tree |
5177 | gfc_trans_entry_master_switch (gfc_entry_list * el) | |
4ee9c684 | 5178 | { |
1b716045 | 5179 | stmtblock_t block; |
5180 | tree label; | |
5181 | tree tmp; | |
5182 | tree val; | |
4ee9c684 | 5183 | |
1b716045 | 5184 | gfc_init_block (&block); |
5185 | for (; el; el = el->next) | |
5186 | { | |
5187 | /* Add the case label. */ | |
b797d6d3 | 5188 | label = gfc_build_label_decl (NULL_TREE); |
7016c612 | 5189 | val = build_int_cst (gfc_array_index_type, el->id); |
b6e3dd65 | 5190 | tmp = build_case_label (val, NULL_TREE, label); |
1b716045 | 5191 | gfc_add_expr_to_block (&block, tmp); |
5b11d932 | 5192 | |
1b716045 | 5193 | /* And jump to the actual entry point. */ |
5194 | label = gfc_build_label_decl (NULL_TREE); | |
1b716045 | 5195 | tmp = build1_v (GOTO_EXPR, label); |
5196 | gfc_add_expr_to_block (&block, tmp); | |
5197 | ||
5198 | /* Save the label decl. */ | |
5199 | el->label = label; | |
5200 | } | |
5201 | tmp = gfc_finish_block (&block); | |
5202 | /* The first argument selects the entry point. */ | |
5203 | val = DECL_ARGUMENTS (current_function_decl); | |
bfb10994 | 5204 | tmp = fold_build3_loc (input_location, SWITCH_EXPR, NULL_TREE, |
5205 | val, tmp, NULL_TREE); | |
1b716045 | 5206 | return tmp; |
4ee9c684 | 5207 | } |
5208 | ||
6374121b | 5209 | |
a4abf8a0 | 5210 | /* Add code to string lengths of actual arguments passed to a function against |
5211 | the expected lengths of the dummy arguments. */ | |
5212 | ||
5213 | static void | |
5214 | add_argument_checking (stmtblock_t *block, gfc_symbol *sym) | |
5215 | { | |
5216 | gfc_formal_arglist *formal; | |
5217 | ||
6777213b | 5218 | for (formal = gfc_sym_get_dummy_args (sym); formal; formal = formal->next) |
517c89e5 | 5219 | if (formal->sym && formal->sym->ts.type == BT_CHARACTER |
6c3000f4 | 5220 | && !formal->sym->ts.deferred) |
a4abf8a0 | 5221 | { |
5222 | enum tree_code comparison; | |
5223 | tree cond; | |
5224 | tree argname; | |
5225 | gfc_symbol *fsym; | |
5226 | gfc_charlen *cl; | |
5227 | const char *message; | |
5228 | ||
5229 | fsym = formal->sym; | |
eeebe20b | 5230 | cl = fsym->ts.u.cl; |
a4abf8a0 | 5231 | |
5232 | gcc_assert (cl); | |
5233 | gcc_assert (cl->passed_length != NULL_TREE); | |
5234 | gcc_assert (cl->backend_decl != NULL_TREE); | |
5235 | ||
5236 | /* For POINTER, ALLOCATABLE and assumed-shape dummy arguments, the | |
5237 | string lengths must match exactly. Otherwise, it is only required | |
be4be771 | 5238 | that the actual string length is *at least* the expected one. |
5239 | Sequence association allows for a mismatch of the string length | |
5240 | if the actual argument is (part of) an array, but only if the | |
5241 | dummy argument is an array. (See "Sequence association" in | |
5242 | Section 12.4.1.4 for F95 and 12.4.1.5 for F2003.) */ | |
517c89e5 | 5243 | if (fsym->attr.pointer || fsym->attr.allocatable |
f00f6dd6 | 5244 | || (fsym->as && (fsym->as->type == AS_ASSUMED_SHAPE |
5245 | || fsym->as->type == AS_ASSUMED_RANK))) | |
a4abf8a0 | 5246 | { |
5247 | comparison = NE_EXPR; | |
5248 | message = _("Actual string length does not match the declared one" | |
5249 | " for dummy argument '%s' (%ld/%ld)"); | |
5250 | } | |
be4be771 | 5251 | else if (fsym->as && fsym->as->rank != 0) |
5252 | continue; | |
a4abf8a0 | 5253 | else |
5254 | { | |
5255 | comparison = LT_EXPR; | |
5256 | message = _("Actual string length is shorter than the declared one" | |
5257 | " for dummy argument '%s' (%ld/%ld)"); | |
5258 | } | |
5259 | ||
5260 | /* Build the condition. For optional arguments, an actual length | |
5261 | of 0 is also acceptable if the associated string is NULL, which | |
5262 | means the argument was not passed. */ | |
fd779e1d | 5263 | cond = fold_build2_loc (input_location, comparison, boolean_type_node, |
5264 | cl->passed_length, cl->backend_decl); | |
a4abf8a0 | 5265 | if (fsym->attr.optional) |
5266 | { | |
5267 | tree not_absent; | |
5268 | tree not_0length; | |
5269 | tree absent_failed; | |
5270 | ||
fd779e1d | 5271 | not_0length = fold_build2_loc (input_location, NE_EXPR, |
5272 | boolean_type_node, | |
5273 | cl->passed_length, | |
385f3f36 | 5274 | build_zero_cst (gfc_charlen_type_node)); |
5fa0fdc2 | 5275 | /* The symbol needs to be referenced for gfc_get_symbol_decl. */ |
5276 | fsym->attr.referenced = 1; | |
5277 | not_absent = gfc_conv_expr_present (fsym); | |
a4abf8a0 | 5278 | |
fd779e1d | 5279 | absent_failed = fold_build2_loc (input_location, TRUTH_OR_EXPR, |
5280 | boolean_type_node, not_0length, | |
5281 | not_absent); | |
a4abf8a0 | 5282 | |
fd779e1d | 5283 | cond = fold_build2_loc (input_location, TRUTH_AND_EXPR, |
5284 | boolean_type_node, cond, absent_failed); | |
a4abf8a0 | 5285 | } |
5286 | ||
5287 | /* Build the runtime check. */ | |
5288 | argname = gfc_build_cstring_const (fsym->name); | |
5289 | argname = gfc_build_addr_expr (pchar_type_node, argname); | |
5290 | gfc_trans_runtime_check (true, false, cond, block, &fsym->declared_at, | |
5291 | message, argname, | |
5292 | fold_convert (long_integer_type_node, | |
5293 | cl->passed_length), | |
5294 | fold_convert (long_integer_type_node, | |
5295 | cl->backend_decl)); | |
5296 | } | |
5297 | } | |
5298 | ||
5299 | ||
7257a5d2 | 5300 | static void |
5301 | create_main_function (tree fndecl) | |
5302 | { | |
43702da6 | 5303 | tree old_context; |
7257a5d2 | 5304 | tree ftn_main; |
5305 | tree tmp, decl, result_decl, argc, argv, typelist, arglist; | |
5306 | stmtblock_t body; | |
5307 | ||
43702da6 | 5308 | old_context = current_function_decl; |
5309 | ||
5310 | if (old_context) | |
5311 | { | |
5312 | push_function_context (); | |
5313 | saved_parent_function_decls = saved_function_decls; | |
5314 | saved_function_decls = NULL_TREE; | |
5315 | } | |
5316 | ||
7257a5d2 | 5317 | /* main() function must be declared with global scope. */ |
5318 | gcc_assert (current_function_decl == NULL_TREE); | |
5319 | ||
5320 | /* Declare the function. */ | |
5321 | tmp = build_function_type_list (integer_type_node, integer_type_node, | |
5322 | build_pointer_type (pchar_type_node), | |
5323 | NULL_TREE); | |
0509d0ee | 5324 | main_identifier_node = get_identifier ("main"); |
e60a6f7b | 5325 | ftn_main = build_decl (input_location, FUNCTION_DECL, |
5326 | main_identifier_node, tmp); | |
7257a5d2 | 5327 | DECL_EXTERNAL (ftn_main) = 0; |
5328 | TREE_PUBLIC (ftn_main) = 1; | |
5329 | TREE_STATIC (ftn_main) = 1; | |
5330 | DECL_ATTRIBUTES (ftn_main) | |
5331 | = tree_cons (get_identifier("externally_visible"), NULL_TREE, NULL_TREE); | |
5332 | ||
5333 | /* Setup the result declaration (for "return 0"). */ | |
e60a6f7b | 5334 | result_decl = build_decl (input_location, |
5335 | RESULT_DECL, NULL_TREE, integer_type_node); | |
7257a5d2 | 5336 | DECL_ARTIFICIAL (result_decl) = 1; |
5337 | DECL_IGNORED_P (result_decl) = 1; | |
5338 | DECL_CONTEXT (result_decl) = ftn_main; | |
5339 | DECL_RESULT (ftn_main) = result_decl; | |
5340 | ||
5341 | pushdecl (ftn_main); | |
5342 | ||
5343 | /* Get the arguments. */ | |
5344 | ||
5345 | arglist = NULL_TREE; | |
5346 | typelist = TYPE_ARG_TYPES (TREE_TYPE (ftn_main)); | |
5347 | ||
5348 | tmp = TREE_VALUE (typelist); | |
e60a6f7b | 5349 | argc = build_decl (input_location, PARM_DECL, get_identifier ("argc"), tmp); |
7257a5d2 | 5350 | DECL_CONTEXT (argc) = ftn_main; |
5351 | DECL_ARG_TYPE (argc) = TREE_VALUE (typelist); | |
5352 | TREE_READONLY (argc) = 1; | |
5353 | gfc_finish_decl (argc); | |
5354 | arglist = chainon (arglist, argc); | |
5355 | ||
5356 | typelist = TREE_CHAIN (typelist); | |
5357 | tmp = TREE_VALUE (typelist); | |
e60a6f7b | 5358 | argv = build_decl (input_location, PARM_DECL, get_identifier ("argv"), tmp); |
7257a5d2 | 5359 | DECL_CONTEXT (argv) = ftn_main; |
5360 | DECL_ARG_TYPE (argv) = TREE_VALUE (typelist); | |
5361 | TREE_READONLY (argv) = 1; | |
5362 | DECL_BY_REFERENCE (argv) = 1; | |
5363 | gfc_finish_decl (argv); | |
5364 | arglist = chainon (arglist, argv); | |
5365 | ||
5366 | DECL_ARGUMENTS (ftn_main) = arglist; | |
5367 | current_function_decl = ftn_main; | |
5368 | announce_function (ftn_main); | |
5369 | ||
5370 | rest_of_decl_compilation (ftn_main, 1, 0); | |
5371 | make_decl_rtl (ftn_main); | |
00cf115c | 5372 | allocate_struct_function (ftn_main, false); |
cde2be84 | 5373 | pushlevel (); |
7257a5d2 | 5374 | |
5375 | gfc_init_block (&body); | |
5376 | ||
293d72e0 | 5377 | /* Call some libgfortran initialization routines, call then MAIN__(). */ |
7257a5d2 | 5378 | |
d44f2f7c | 5379 | /* Call _gfortran_caf_init (*argc, ***argv). */ |
70b5944a | 5380 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) |
5381 | { | |
5382 | tree pint_type, pppchar_type; | |
5383 | pint_type = build_pointer_type (integer_type_node); | |
5384 | pppchar_type | |
5385 | = build_pointer_type (build_pointer_type (pchar_type_node)); | |
5386 | ||
d44f2f7c | 5387 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_init, 2, |
70b5944a | 5388 | gfc_build_addr_expr (pint_type, argc), |
d44f2f7c | 5389 | gfc_build_addr_expr (pppchar_type, argv)); |
70b5944a | 5390 | gfc_add_expr_to_block (&body, tmp); |
5391 | } | |
5392 | ||
7257a5d2 | 5393 | /* Call _gfortran_set_args (argc, argv). */ |
43702da6 | 5394 | TREE_USED (argc) = 1; |
5395 | TREE_USED (argv) = 1; | |
389dd41b | 5396 | tmp = build_call_expr_loc (input_location, |
5397 | gfor_fndecl_set_args, 2, argc, argv); | |
7257a5d2 | 5398 | gfc_add_expr_to_block (&body, tmp); |
5399 | ||
5400 | /* Add a call to set_options to set up the runtime library Fortran | |
5401 | language standard parameters. */ | |
5402 | { | |
5403 | tree array_type, array, var; | |
f1f41a6c | 5404 | vec<constructor_elt, va_gc> *v = NULL; |
7257a5d2 | 5405 | |
5406 | /* Passing a new option to the library requires four modifications: | |
5407 | + add it to the tree_cons list below | |
5408 | + change the array size in the call to build_array_type | |
5409 | + change the first argument to the library call | |
5410 | gfor_fndecl_set_options | |
5411 | + modify the library (runtime/compile_options.c)! */ | |
5412 | ||
06f13dc1 | 5413 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5414 | build_int_cst (integer_type_node, | |
5415 | gfc_option.warn_std)); | |
5416 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5417 | build_int_cst (integer_type_node, | |
5418 | gfc_option.allow_std)); | |
5419 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5420 | build_int_cst (integer_type_node, pedantic)); | |
b2130263 | 5421 | /* TODO: This is the old -fdump-core option, which is unused but |
5422 | passed due to ABI compatibility; remove when bumping the | |
5423 | library ABI. */ | |
06f13dc1 | 5424 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5425 | build_int_cst (integer_type_node, | |
b2130263 | 5426 | 0)); |
06f13dc1 | 5427 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5428 | build_int_cst (integer_type_node, | |
5429 | gfc_option.flag_backtrace)); | |
5430 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5431 | build_int_cst (integer_type_node, | |
5432 | gfc_option.flag_sign_zero)); | |
5433 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5434 | build_int_cst (integer_type_node, | |
5435 | (gfc_option.rtcheck | |
5436 | & GFC_RTCHECK_BOUNDS))); | |
7f4f15dc | 5437 | /* TODO: This is the -frange-check option, which no longer affects |
5438 | library behavior; when bumping the library ABI this slot can be | |
5439 | reused for something else. As it is the last element in the | |
293d72e0 | 5440 | array, we can instead leave it out altogether. */ |
553e7cef | 5441 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5442 | build_int_cst (integer_type_node, 0)); | |
06f13dc1 | 5443 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5444 | build_int_cst (integer_type_node, | |
553e7cef | 5445 | gfc_option.fpe_summary)); |
7257a5d2 | 5446 | |
5447 | array_type = build_array_type (integer_type_node, | |
553e7cef | 5448 | build_index_type (size_int (8))); |
06f13dc1 | 5449 | array = build_constructor (array_type, v); |
7257a5d2 | 5450 | TREE_CONSTANT (array) = 1; |
5451 | TREE_STATIC (array) = 1; | |
5452 | ||
5453 | /* Create a static variable to hold the jump table. */ | |
bf77f8ee | 5454 | var = build_decl (input_location, VAR_DECL, |
5455 | create_tmp_var_name ("options"), | |
5456 | array_type); | |
5457 | DECL_ARTIFICIAL (var) = 1; | |
5458 | DECL_IGNORED_P (var) = 1; | |
7257a5d2 | 5459 | TREE_CONSTANT (var) = 1; |
5460 | TREE_STATIC (var) = 1; | |
5461 | TREE_READONLY (var) = 1; | |
5462 | DECL_INITIAL (var) = array; | |
bf77f8ee | 5463 | pushdecl (var); |
7257a5d2 | 5464 | var = gfc_build_addr_expr (build_pointer_type (integer_type_node), var); |
5465 | ||
389dd41b | 5466 | tmp = build_call_expr_loc (input_location, |
5467 | gfor_fndecl_set_options, 2, | |
553e7cef | 5468 | build_int_cst (integer_type_node, 9), var); |
7257a5d2 | 5469 | gfc_add_expr_to_block (&body, tmp); |
5470 | } | |
5471 | ||
5472 | /* If -ffpe-trap option was provided, add a call to set_fpe so that | |
5473 | the library will raise a FPE when needed. */ | |
5474 | if (gfc_option.fpe != 0) | |
5475 | { | |
389dd41b | 5476 | tmp = build_call_expr_loc (input_location, |
5477 | gfor_fndecl_set_fpe, 1, | |
7257a5d2 | 5478 | build_int_cst (integer_type_node, |
5479 | gfc_option.fpe)); | |
5480 | gfc_add_expr_to_block (&body, tmp); | |
5481 | } | |
5482 | ||
5483 | /* If this is the main program and an -fconvert option was provided, | |
5484 | add a call to set_convert. */ | |
5485 | ||
5486 | if (gfc_option.convert != GFC_CONVERT_NATIVE) | |
5487 | { | |
389dd41b | 5488 | tmp = build_call_expr_loc (input_location, |
5489 | gfor_fndecl_set_convert, 1, | |
7257a5d2 | 5490 | build_int_cst (integer_type_node, |
5491 | gfc_option.convert)); | |
5492 | gfc_add_expr_to_block (&body, tmp); | |
5493 | } | |
5494 | ||
5495 | /* If this is the main program and an -frecord-marker option was provided, | |
5496 | add a call to set_record_marker. */ | |
5497 | ||
5498 | if (gfc_option.record_marker != 0) | |
5499 | { | |
389dd41b | 5500 | tmp = build_call_expr_loc (input_location, |
5501 | gfor_fndecl_set_record_marker, 1, | |
7257a5d2 | 5502 | build_int_cst (integer_type_node, |
5503 | gfc_option.record_marker)); | |
5504 | gfc_add_expr_to_block (&body, tmp); | |
5505 | } | |
5506 | ||
5507 | if (gfc_option.max_subrecord_length != 0) | |
5508 | { | |
389dd41b | 5509 | tmp = build_call_expr_loc (input_location, |
5510 | gfor_fndecl_set_max_subrecord_length, 1, | |
7257a5d2 | 5511 | build_int_cst (integer_type_node, |
5512 | gfc_option.max_subrecord_length)); | |
5513 | gfc_add_expr_to_block (&body, tmp); | |
5514 | } | |
5515 | ||
5516 | /* Call MAIN__(). */ | |
389dd41b | 5517 | tmp = build_call_expr_loc (input_location, |
5518 | fndecl, 0); | |
7257a5d2 | 5519 | gfc_add_expr_to_block (&body, tmp); |
5520 | ||
43702da6 | 5521 | /* Mark MAIN__ as used. */ |
5522 | TREE_USED (fndecl) = 1; | |
5523 | ||
70b5944a | 5524 | /* Coarray: Call _gfortran_caf_finalize(void). */ |
5525 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
a90fe829 | 5526 | { |
70b5944a | 5527 | /* Per F2008, 8.5.1 END of the main program implies a |
a90fe829 | 5528 | SYNC MEMORY. */ |
b9a16870 | 5529 | tmp = builtin_decl_explicit (BUILT_IN_SYNC_SYNCHRONIZE); |
70b5944a | 5530 | tmp = build_call_expr_loc (input_location, tmp, 0); |
5531 | gfc_add_expr_to_block (&body, tmp); | |
5532 | ||
5533 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_finalize, 0); | |
5534 | gfc_add_expr_to_block (&body, tmp); | |
5535 | } | |
5536 | ||
7257a5d2 | 5537 | /* "return 0". */ |
fd779e1d | 5538 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, integer_type_node, |
5539 | DECL_RESULT (ftn_main), | |
5540 | build_int_cst (integer_type_node, 0)); | |
7257a5d2 | 5541 | tmp = build1_v (RETURN_EXPR, tmp); |
5542 | gfc_add_expr_to_block (&body, tmp); | |
5543 | ||
5544 | ||
5545 | DECL_SAVED_TREE (ftn_main) = gfc_finish_block (&body); | |
5546 | decl = getdecls (); | |
5547 | ||
5548 | /* Finish off this function and send it for code generation. */ | |
cde2be84 | 5549 | poplevel (1, 1); |
7257a5d2 | 5550 | BLOCK_SUPERCONTEXT (DECL_INITIAL (ftn_main)) = ftn_main; |
5551 | ||
5552 | DECL_SAVED_TREE (ftn_main) | |
5553 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (ftn_main), | |
5554 | DECL_INITIAL (ftn_main)); | |
5555 | ||
5556 | /* Output the GENERIC tree. */ | |
5557 | dump_function (TDI_original, ftn_main); | |
5558 | ||
35ee1c66 | 5559 | cgraph_node::finalize_function (ftn_main, true); |
43702da6 | 5560 | |
5561 | if (old_context) | |
5562 | { | |
5563 | pop_function_context (); | |
5564 | saved_function_decls = saved_parent_function_decls; | |
5565 | } | |
5566 | current_function_decl = old_context; | |
7257a5d2 | 5567 | } |
5568 | ||
5569 | ||
89ac8ba1 | 5570 | /* Get the result expression for a procedure. */ |
5571 | ||
5572 | static tree | |
5573 | get_proc_result (gfc_symbol* sym) | |
5574 | { | |
5575 | if (sym->attr.subroutine || sym == sym->result) | |
5576 | { | |
5577 | if (current_fake_result_decl != NULL) | |
5578 | return TREE_VALUE (current_fake_result_decl); | |
5579 | ||
5580 | return NULL_TREE; | |
5581 | } | |
5582 | ||
5583 | return sym->result->backend_decl; | |
5584 | } | |
5585 | ||
5586 | ||
5587 | /* Generate an appropriate return-statement for a procedure. */ | |
5588 | ||
5589 | tree | |
5590 | gfc_generate_return (void) | |
5591 | { | |
5592 | gfc_symbol* sym; | |
5593 | tree result; | |
5594 | tree fndecl; | |
5595 | ||
5596 | sym = current_procedure_symbol; | |
5597 | fndecl = sym->backend_decl; | |
5598 | ||
5599 | if (TREE_TYPE (DECL_RESULT (fndecl)) == void_type_node) | |
5600 | result = NULL_TREE; | |
5601 | else | |
5602 | { | |
5603 | result = get_proc_result (sym); | |
5604 | ||
5605 | /* Set the return value to the dummy result variable. The | |
5606 | types may be different for scalar default REAL functions | |
5607 | with -ff2c, therefore we have to convert. */ | |
5608 | if (result != NULL_TREE) | |
5609 | { | |
5610 | result = convert (TREE_TYPE (DECL_RESULT (fndecl)), result); | |
fd779e1d | 5611 | result = fold_build2_loc (input_location, MODIFY_EXPR, |
5612 | TREE_TYPE (result), DECL_RESULT (fndecl), | |
5613 | result); | |
89ac8ba1 | 5614 | } |
5615 | } | |
5616 | ||
5617 | return build1_v (RETURN_EXPR, result); | |
5618 | } | |
5619 | ||
5620 | ||
d566c3e0 | 5621 | static void |
5622 | is_from_ieee_module (gfc_symbol *sym) | |
5623 | { | |
5624 | if (sym->from_intmod == INTMOD_IEEE_FEATURES | |
5625 | || sym->from_intmod == INTMOD_IEEE_EXCEPTIONS | |
5626 | || sym->from_intmod == INTMOD_IEEE_ARITHMETIC) | |
5627 | seen_ieee_symbol = 1; | |
5628 | } | |
5629 | ||
5630 | ||
5631 | static int | |
5632 | is_ieee_module_used (gfc_namespace *ns) | |
5633 | { | |
5634 | seen_ieee_symbol = 0; | |
5635 | gfc_traverse_ns (ns, is_from_ieee_module); | |
5636 | return seen_ieee_symbol; | |
5637 | } | |
5638 | ||
5639 | ||
4ee9c684 | 5640 | /* Generate code for a function. */ |
5641 | ||
5642 | void | |
5643 | gfc_generate_function_code (gfc_namespace * ns) | |
5644 | { | |
5645 | tree fndecl; | |
5646 | tree old_context; | |
5647 | tree decl; | |
5648 | tree tmp; | |
d566c3e0 | 5649 | tree fpstate = NULL_TREE; |
89ac8ba1 | 5650 | stmtblock_t init, cleanup; |
4ee9c684 | 5651 | stmtblock_t body; |
89ac8ba1 | 5652 | gfc_wrapped_block try_block; |
5fa0fdc2 | 5653 | tree recurcheckvar = NULL_TREE; |
4ee9c684 | 5654 | gfc_symbol *sym; |
89ac8ba1 | 5655 | gfc_symbol *previous_procedure_symbol; |
d566c3e0 | 5656 | int rank, ieee; |
e50e62f5 | 5657 | bool is_recursive; |
4ee9c684 | 5658 | |
5659 | sym = ns->proc_name; | |
89ac8ba1 | 5660 | previous_procedure_symbol = current_procedure_symbol; |
5661 | current_procedure_symbol = sym; | |
1b716045 | 5662 | |
4ee9c684 | 5663 | /* Check that the frontend isn't still using this. */ |
22d678e8 | 5664 | gcc_assert (sym->tlink == NULL); |
4ee9c684 | 5665 | sym->tlink = sym; |
5666 | ||
5667 | /* Create the declaration for functions with global scope. */ | |
5668 | if (!sym->backend_decl) | |
d896f9b3 | 5669 | gfc_create_function_decl (ns, false); |
4ee9c684 | 5670 | |
5671 | fndecl = sym->backend_decl; | |
5672 | old_context = current_function_decl; | |
5673 | ||
5674 | if (old_context) | |
5675 | { | |
5676 | push_function_context (); | |
5677 | saved_parent_function_decls = saved_function_decls; | |
5678 | saved_function_decls = NULL_TREE; | |
5679 | } | |
5680 | ||
1b716045 | 5681 | trans_function_start (sym); |
4ee9c684 | 5682 | |
89ac8ba1 | 5683 | gfc_init_block (&init); |
4ee9c684 | 5684 | |
c6871095 | 5685 | if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER) |
5686 | { | |
5687 | /* Copy length backend_decls to all entry point result | |
5688 | symbols. */ | |
5689 | gfc_entry_list *el; | |
5690 | tree backend_decl; | |
5691 | ||
eeebe20b | 5692 | gfc_conv_const_charlen (ns->proc_name->ts.u.cl); |
5693 | backend_decl = ns->proc_name->result->ts.u.cl->backend_decl; | |
c6871095 | 5694 | for (el = ns->entries; el; el = el->next) |
eeebe20b | 5695 | el->sym->result->ts.u.cl->backend_decl = backend_decl; |
c6871095 | 5696 | } |
5697 | ||
4ee9c684 | 5698 | /* Translate COMMON blocks. */ |
5699 | gfc_trans_common (ns); | |
5700 | ||
c750cc52 | 5701 | /* Null the parent fake result declaration if this namespace is |
5702 | a module function or an external procedures. */ | |
5703 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
5704 | || ns->parent == NULL) | |
5705 | parent_fake_result_decl = NULL_TREE; | |
5706 | ||
2b685f8e | 5707 | gfc_generate_contained_functions (ns); |
5708 | ||
9579733e | 5709 | nonlocal_dummy_decls = NULL; |
5710 | nonlocal_dummy_decl_pset = NULL; | |
5711 | ||
a961ca30 | 5712 | has_coarray_vars = false; |
4ee9c684 | 5713 | generate_local_vars (ns); |
5b11d932 | 5714 | |
a961ca30 | 5715 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
5716 | generate_coarray_init (ns); | |
5717 | ||
c750cc52 | 5718 | /* Keep the parent fake result declaration in module functions |
5719 | or external procedures. */ | |
5720 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
5721 | || ns->parent == NULL) | |
5722 | current_fake_result_decl = parent_fake_result_decl; | |
5723 | else | |
5724 | current_fake_result_decl = NULL_TREE; | |
5725 | ||
89ac8ba1 | 5726 | is_recursive = sym->attr.recursive |
5727 | || (sym->attr.entry_master | |
5728 | && sym->ns->entries->sym->attr.recursive); | |
5729 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
5730 | && !is_recursive | |
5731 | && !gfc_option.flag_recursive) | |
5732 | { | |
5733 | char * msg; | |
5734 | ||
5735 | asprintf (&msg, "Recursive call to nonrecursive procedure '%s'", | |
5736 | sym->name); | |
5737 | recurcheckvar = gfc_create_var (boolean_type_node, "is_recursive"); | |
5738 | TREE_STATIC (recurcheckvar) = 1; | |
5739 | DECL_INITIAL (recurcheckvar) = boolean_false_node; | |
5740 | gfc_add_expr_to_block (&init, recurcheckvar); | |
5741 | gfc_trans_runtime_check (true, false, recurcheckvar, &init, | |
5742 | &sym->declared_at, msg); | |
5743 | gfc_add_modify (&init, recurcheckvar, boolean_true_node); | |
434f0922 | 5744 | free (msg); |
89ac8ba1 | 5745 | } |
4ee9c684 | 5746 | |
d566c3e0 | 5747 | /* Check if an IEEE module is used in the procedure. If so, save |
5748 | the floating point state. */ | |
5749 | ieee = is_ieee_module_used (ns); | |
5750 | if (ieee) | |
d7333535 | 5751 | fpstate = gfc_save_fp_state (&init); |
d566c3e0 | 5752 | |
4ee9c684 | 5753 | /* Now generate the code for the body of this function. */ |
5754 | gfc_init_block (&body); | |
5755 | ||
5756 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node | |
89ac8ba1 | 5757 | && sym->attr.subroutine) |
4ee9c684 | 5758 | { |
5759 | tree alternate_return; | |
c750cc52 | 5760 | alternate_return = gfc_get_fake_result_decl (sym, 0); |
75a70cf9 | 5761 | gfc_add_modify (&body, alternate_return, integer_zero_node); |
4ee9c684 | 5762 | } |
5763 | ||
1b716045 | 5764 | if (ns->entries) |
5765 | { | |
5766 | /* Jump to the correct entry point. */ | |
5767 | tmp = gfc_trans_entry_master_switch (ns->entries); | |
5768 | gfc_add_expr_to_block (&body, tmp); | |
5769 | } | |
5770 | ||
a4abf8a0 | 5771 | /* If bounds-checking is enabled, generate code to check passed in actual |
5772 | arguments against the expected dummy argument attributes (e.g. string | |
5773 | lengths). */ | |
c1630d65 | 5774 | if ((gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) && !sym->attr.is_bind_c) |
a4abf8a0 | 5775 | add_argument_checking (&body, sym); |
5776 | ||
4ee9c684 | 5777 | tmp = gfc_trans_code (ns->code); |
5778 | gfc_add_expr_to_block (&body, tmp); | |
5779 | ||
4ee9c684 | 5780 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node) |
5781 | { | |
89ac8ba1 | 5782 | tree result = get_proc_result (sym); |
4ee9c684 | 5783 | |
42766cb3 | 5784 | if (result != NULL_TREE && sym->attr.function && !sym->attr.pointer) |
2294b616 | 5785 | { |
deb7edfc | 5786 | if (sym->attr.allocatable && sym->attr.dimension == 0 |
5787 | && sym->result == sym) | |
5788 | gfc_add_modify (&init, result, fold_convert (TREE_TYPE (result), | |
5789 | null_pointer_node)); | |
42766cb3 | 5790 | else if (sym->ts.type == BT_CLASS |
5791 | && CLASS_DATA (sym)->attr.allocatable | |
3a19c063 | 5792 | && CLASS_DATA (sym)->attr.dimension == 0 |
5793 | && sym->result == sym) | |
42766cb3 | 5794 | { |
5795 | tmp = CLASS_DATA (sym)->backend_decl; | |
5796 | tmp = fold_build3_loc (input_location, COMPONENT_REF, | |
5797 | TREE_TYPE (tmp), result, tmp, NULL_TREE); | |
5798 | gfc_add_modify (&init, tmp, fold_convert (TREE_TYPE (tmp), | |
5799 | null_pointer_node)); | |
5800 | } | |
deb7edfc | 5801 | else if (sym->ts.type == BT_DERIVED |
42766cb3 | 5802 | && sym->ts.u.derived->attr.alloc_comp |
5803 | && !sym->attr.allocatable) | |
53169279 | 5804 | { |
5805 | rank = sym->as ? sym->as->rank : 0; | |
89ac8ba1 | 5806 | tmp = gfc_nullify_alloc_comp (sym->ts.u.derived, result, rank); |
5807 | gfc_add_expr_to_block (&init, tmp); | |
53169279 | 5808 | } |
5176859a | 5809 | } |
e50e62f5 | 5810 | |
fa7b6574 | 5811 | if (result == NULL_TREE) |
5812 | { | |
5813 | /* TODO: move to the appropriate place in resolve.c. */ | |
90a4a5a6 | 5814 | if (warn_return_type && sym == sym->result) |
4166acc7 | 5815 | gfc_warning (OPT_Wreturn_type, |
5816 | "Return value of function %qs at %L not set", | |
fa7b6574 | 5817 | sym->name, &sym->declared_at); |
90a4a5a6 | 5818 | if (warn_return_type) |
5819 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
fa7b6574 | 5820 | } |
4ee9c684 | 5821 | else |
89ac8ba1 | 5822 | gfc_add_expr_to_block (&body, gfc_generate_return ()); |
4ee9c684 | 5823 | } |
89ac8ba1 | 5824 | |
5825 | gfc_init_block (&cleanup); | |
5826 | ||
5827 | /* Reset recursion-check variable. */ | |
5828 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
5829 | && !is_recursive | |
5ae82d58 | 5830 | && !gfc_option.gfc_flag_openmp |
89ac8ba1 | 5831 | && recurcheckvar != NULL_TREE) |
e50e62f5 | 5832 | { |
89ac8ba1 | 5833 | gfc_add_modify (&cleanup, recurcheckvar, boolean_false_node); |
5834 | recurcheckvar = NULL; | |
e50e62f5 | 5835 | } |
2294b616 | 5836 | |
d566c3e0 | 5837 | /* If IEEE modules are loaded, restore the floating-point state. */ |
5838 | if (ieee) | |
d7333535 | 5839 | gfc_restore_fp_state (&cleanup, fpstate); |
d566c3e0 | 5840 | |
89ac8ba1 | 5841 | /* Finish the function body and add init and cleanup code. */ |
5842 | tmp = gfc_finish_block (&body); | |
5843 | gfc_start_wrapped_block (&try_block, tmp); | |
5844 | /* Add code to create and cleanup arrays. */ | |
5845 | gfc_trans_deferred_vars (sym, &try_block); | |
5846 | gfc_add_init_cleanup (&try_block, gfc_finish_block (&init), | |
5847 | gfc_finish_block (&cleanup)); | |
4ee9c684 | 5848 | |
5849 | /* Add all the decls we created during processing. */ | |
5850 | decl = saved_function_decls; | |
5851 | while (decl) | |
5852 | { | |
5853 | tree next; | |
5854 | ||
1767a056 | 5855 | next = DECL_CHAIN (decl); |
5856 | DECL_CHAIN (decl) = NULL_TREE; | |
4c197fd0 | 5857 | pushdecl (decl); |
4ee9c684 | 5858 | decl = next; |
5859 | } | |
5860 | saved_function_decls = NULL_TREE; | |
5861 | ||
89ac8ba1 | 5862 | DECL_SAVED_TREE (fndecl) = gfc_finish_wrapped_block (&try_block); |
e5004242 | 5863 | decl = getdecls (); |
4ee9c684 | 5864 | |
5865 | /* Finish off this function and send it for code generation. */ | |
cde2be84 | 5866 | poplevel (1, 1); |
4ee9c684 | 5867 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; |
5868 | ||
e5004242 | 5869 | DECL_SAVED_TREE (fndecl) |
5870 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5871 | DECL_INITIAL (fndecl)); | |
5872 | ||
9579733e | 5873 | if (nonlocal_dummy_decls) |
5874 | { | |
5875 | BLOCK_VARS (DECL_INITIAL (fndecl)) | |
5876 | = chainon (BLOCK_VARS (DECL_INITIAL (fndecl)), nonlocal_dummy_decls); | |
431205b7 | 5877 | delete nonlocal_dummy_decl_pset; |
9579733e | 5878 | nonlocal_dummy_decls = NULL; |
5879 | nonlocal_dummy_decl_pset = NULL; | |
5880 | } | |
5881 | ||
4ee9c684 | 5882 | /* Output the GENERIC tree. */ |
5883 | dump_function (TDI_original, fndecl); | |
5884 | ||
5885 | /* Store the end of the function, so that we get good line number | |
5886 | info for the epilogue. */ | |
5887 | cfun->function_end_locus = input_location; | |
5888 | ||
5889 | /* We're leaving the context of this function, so zap cfun. | |
5890 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
5891 | tree_rest_of_compilation. */ | |
87d4aa85 | 5892 | set_cfun (NULL); |
4ee9c684 | 5893 | |
5894 | if (old_context) | |
5895 | { | |
5896 | pop_function_context (); | |
5897 | saved_function_decls = saved_parent_function_decls; | |
5898 | } | |
5899 | current_function_decl = old_context; | |
5900 | ||
1f7747bd | 5901 | if (decl_function_context (fndecl)) |
5902 | { | |
5903 | /* Register this function with cgraph just far enough to get it | |
5904 | added to our parent's nested function list. | |
5905 | If there are static coarrays in this function, the nested _caf_init | |
5906 | function has already called cgraph_create_node, which also created | |
5907 | the cgraph node for this function. */ | |
5908 | if (!has_coarray_vars || gfc_option.coarray != GFC_FCOARRAY_LIB) | |
415d1b9a | 5909 | (void) cgraph_node::create (fndecl); |
1f7747bd | 5910 | } |
4ee9c684 | 5911 | else |
35ee1c66 | 5912 | cgraph_node::finalize_function (fndecl, true); |
df4d540f | 5913 | |
5914 | gfc_trans_use_stmts (ns); | |
2eb674c9 | 5915 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
7257a5d2 | 5916 | |
5917 | if (sym->attr.is_main_program) | |
5918 | create_main_function (fndecl); | |
89ac8ba1 | 5919 | |
5920 | current_procedure_symbol = previous_procedure_symbol; | |
4ee9c684 | 5921 | } |
5922 | ||
7257a5d2 | 5923 | |
4ee9c684 | 5924 | void |
5925 | gfc_generate_constructors (void) | |
5926 | { | |
22d678e8 | 5927 | gcc_assert (gfc_static_ctors == NULL_TREE); |
4ee9c684 | 5928 | #if 0 |
5929 | tree fnname; | |
5930 | tree type; | |
5931 | tree fndecl; | |
5932 | tree decl; | |
5933 | tree tmp; | |
5934 | ||
5935 | if (gfc_static_ctors == NULL_TREE) | |
5936 | return; | |
5937 | ||
db85cc4f | 5938 | fnname = get_file_function_name ("I"); |
e1036019 | 5939 | type = build_function_type_list (void_type_node, NULL_TREE); |
4ee9c684 | 5940 | |
e60a6f7b | 5941 | fndecl = build_decl (input_location, |
5942 | FUNCTION_DECL, fnname, type); | |
4ee9c684 | 5943 | TREE_PUBLIC (fndecl) = 1; |
5944 | ||
e60a6f7b | 5945 | decl = build_decl (input_location, |
5946 | RESULT_DECL, NULL_TREE, void_type_node); | |
540edea7 | 5947 | DECL_ARTIFICIAL (decl) = 1; |
5948 | DECL_IGNORED_P (decl) = 1; | |
4ee9c684 | 5949 | DECL_CONTEXT (decl) = fndecl; |
5950 | DECL_RESULT (fndecl) = decl; | |
5951 | ||
5952 | pushdecl (fndecl); | |
5953 | ||
5954 | current_function_decl = fndecl; | |
5955 | ||
b2c4af5e | 5956 | rest_of_decl_compilation (fndecl, 1, 0); |
4ee9c684 | 5957 | |
b2c4af5e | 5958 | make_decl_rtl (fndecl); |
4ee9c684 | 5959 | |
00cf115c | 5960 | allocate_struct_function (fndecl, false); |
4ee9c684 | 5961 | |
cde2be84 | 5962 | pushlevel (); |
4ee9c684 | 5963 | |
5964 | for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors)) | |
5965 | { | |
389dd41b | 5966 | tmp = build_call_expr_loc (input_location, |
5967 | TREE_VALUE (gfc_static_ctors), 0); | |
e60a6f7b | 5968 | DECL_SAVED_TREE (fndecl) = build_stmt (input_location, EXPR_STMT, tmp); |
4ee9c684 | 5969 | } |
5970 | ||
e5004242 | 5971 | decl = getdecls (); |
cde2be84 | 5972 | poplevel (1, 1); |
4ee9c684 | 5973 | |
5974 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
e5004242 | 5975 | DECL_SAVED_TREE (fndecl) |
5976 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5977 | DECL_INITIAL (fndecl)); | |
4ee9c684 | 5978 | |
5979 | free_after_parsing (cfun); | |
5980 | free_after_compilation (cfun); | |
5981 | ||
6148a911 | 5982 | tree_rest_of_compilation (fndecl); |
4ee9c684 | 5983 | |
5984 | current_function_decl = NULL_TREE; | |
5985 | #endif | |
5986 | } | |
5987 | ||
9ec7c303 | 5988 | /* Translates a BLOCK DATA program unit. This means emitting the |
5989 | commons contained therein plus their initializations. We also emit | |
5990 | a globally visible symbol to make sure that each BLOCK DATA program | |
5991 | unit remains unique. */ | |
5992 | ||
5993 | void | |
5994 | gfc_generate_block_data (gfc_namespace * ns) | |
5995 | { | |
5996 | tree decl; | |
5997 | tree id; | |
5998 | ||
b31f705b | 5999 | /* Tell the backend the source location of the block data. */ |
6000 | if (ns->proc_name) | |
6001 | gfc_set_backend_locus (&ns->proc_name->declared_at); | |
6002 | else | |
6003 | gfc_set_backend_locus (&gfc_current_locus); | |
6004 | ||
6005 | /* Process the DATA statements. */ | |
9ec7c303 | 6006 | gfc_trans_common (ns); |
6007 | ||
b31f705b | 6008 | /* Create a global symbol with the mane of the block data. This is to |
6009 | generate linker errors if the same name is used twice. It is never | |
6010 | really used. */ | |
9ec7c303 | 6011 | if (ns->proc_name) |
6012 | id = gfc_sym_mangled_function_id (ns->proc_name); | |
6013 | else | |
6014 | id = get_identifier ("__BLOCK_DATA__"); | |
6015 | ||
e60a6f7b | 6016 | decl = build_decl (input_location, |
6017 | VAR_DECL, id, gfc_array_index_type); | |
9ec7c303 | 6018 | TREE_PUBLIC (decl) = 1; |
6019 | TREE_STATIC (decl) = 1; | |
df4d540f | 6020 | DECL_IGNORED_P (decl) = 1; |
9ec7c303 | 6021 | |
6022 | pushdecl (decl); | |
6023 | rest_of_decl_compilation (decl, 1, 0); | |
6024 | } | |
6025 | ||
b549d2a5 | 6026 | |
6a7084d7 | 6027 | /* Process the local variables of a BLOCK construct. */ |
6028 | ||
6029 | void | |
3c82e013 | 6030 | gfc_process_block_locals (gfc_namespace* ns) |
6a7084d7 | 6031 | { |
6032 | tree decl; | |
6033 | ||
6034 | gcc_assert (saved_local_decls == NULL_TREE); | |
a961ca30 | 6035 | has_coarray_vars = false; |
6036 | ||
6a7084d7 | 6037 | generate_local_vars (ns); |
6038 | ||
a961ca30 | 6039 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
6040 | generate_coarray_init (ns); | |
6041 | ||
6a7084d7 | 6042 | decl = saved_local_decls; |
6043 | while (decl) | |
6044 | { | |
6045 | tree next; | |
6046 | ||
1767a056 | 6047 | next = DECL_CHAIN (decl); |
6048 | DECL_CHAIN (decl) = NULL_TREE; | |
6a7084d7 | 6049 | pushdecl (decl); |
6050 | decl = next; | |
6051 | } | |
6052 | saved_local_decls = NULL_TREE; | |
6053 | } | |
6054 | ||
6055 | ||
4ee9c684 | 6056 | #include "gt-fortran-trans-decl.h" |