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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" |
4ee9c684 | 27 | #include "tree.h" |
9ed99284 | 28 | #include "stringpool.h" |
29 | #include "stor-layout.h" | |
30 | #include "varasm.h" | |
31 | #include "attribs.h" | |
4ee9c684 | 32 | #include "tree-dump.h" |
a8783bee | 33 | #include "gimple-expr.h" /* For create_tmp_var_raw. */ |
4ee9c684 | 34 | #include "ggc.h" |
7cbc820e | 35 | #include "diagnostic-core.h" /* For internal_error. */ |
36 | #include "toplev.h" /* For announce_function. */ | |
4ee9c684 | 37 | #include "target.h" |
38 | #include "function.h" | |
4ee9c684 | 39 | #include "flags.h" |
40 | #include "cgraph.h" | |
df4d540f | 41 | #include "debug.h" |
4ee9c684 | 42 | #include "gfortran.h" |
9579733e | 43 | #include "pointer-set.h" |
126387b5 | 44 | #include "constructor.h" |
4ee9c684 | 45 | #include "trans.h" |
46 | #include "trans-types.h" | |
47 | #include "trans-array.h" | |
48 | #include "trans-const.h" | |
49 | /* Only for gfc_trans_code. Shouldn't need to include this. */ | |
50 | #include "trans-stmt.h" | |
51 | ||
52 | #define MAX_LABEL_VALUE 99999 | |
53 | ||
54 | ||
55 | /* Holds the result of the function if no result variable specified. */ | |
56 | ||
57 | static GTY(()) tree current_fake_result_decl; | |
c750cc52 | 58 | static GTY(()) tree parent_fake_result_decl; |
4ee9c684 | 59 | |
4ee9c684 | 60 | |
61 | /* Holds the variable DECLs for the current function. */ | |
62 | ||
d4163395 | 63 | static GTY(()) tree saved_function_decls; |
64 | static GTY(()) tree saved_parent_function_decls; | |
4ee9c684 | 65 | |
9579733e | 66 | static struct pointer_set_t *nonlocal_dummy_decl_pset; |
67 | static GTY(()) tree nonlocal_dummy_decls; | |
4ee9c684 | 68 | |
6a7084d7 | 69 | /* Holds the variable DECLs that are locals. */ |
70 | ||
71 | static GTY(()) tree saved_local_decls; | |
72 | ||
4ee9c684 | 73 | /* The namespace of the module we're currently generating. Only used while |
74 | outputting decls for module variables. Do not rely on this being set. */ | |
75 | ||
76 | static gfc_namespace *module_namespace; | |
77 | ||
89ac8ba1 | 78 | /* The currently processed procedure symbol. */ |
79 | static gfc_symbol* current_procedure_symbol = NULL; | |
80 | ||
4ee9c684 | 81 | |
a961ca30 | 82 | /* With -fcoarray=lib: For generating the registering call |
83 | of static coarrays. */ | |
84 | static bool has_coarray_vars; | |
85 | static stmtblock_t caf_init_block; | |
86 | ||
87 | ||
4ee9c684 | 88 | /* List of static constructor functions. */ |
89 | ||
90 | tree gfc_static_ctors; | |
91 | ||
92 | ||
93 | /* Function declarations for builtin library functions. */ | |
94 | ||
4ee9c684 | 95 | tree gfor_fndecl_pause_numeric; |
96 | tree gfor_fndecl_pause_string; | |
97 | tree gfor_fndecl_stop_numeric; | |
dff2ea5f | 98 | tree gfor_fndecl_stop_numeric_f08; |
4ee9c684 | 99 | tree gfor_fndecl_stop_string; |
070cc790 | 100 | tree gfor_fndecl_error_stop_numeric; |
c6cd3066 | 101 | tree gfor_fndecl_error_stop_string; |
4ee9c684 | 102 | tree gfor_fndecl_runtime_error; |
50ad5fa2 | 103 | tree gfor_fndecl_runtime_error_at; |
da6ffc6d | 104 | tree gfor_fndecl_runtime_warning_at; |
9915365e | 105 | tree gfor_fndecl_os_error; |
50ad5fa2 | 106 | tree gfor_fndecl_generate_error; |
7257a5d2 | 107 | tree gfor_fndecl_set_args; |
8c84a5de | 108 | tree gfor_fndecl_set_fpe; |
56c7c2d7 | 109 | tree gfor_fndecl_set_options; |
15774a8b | 110 | tree gfor_fndecl_set_convert; |
f23886ab | 111 | tree gfor_fndecl_set_record_marker; |
bbaaa7b1 | 112 | tree gfor_fndecl_set_max_subrecord_length; |
b902b078 | 113 | tree gfor_fndecl_ctime; |
114 | tree gfor_fndecl_fdate; | |
dbc97b88 | 115 | tree gfor_fndecl_ttynam; |
4ee9c684 | 116 | tree gfor_fndecl_in_pack; |
117 | tree gfor_fndecl_in_unpack; | |
118 | tree gfor_fndecl_associated; | |
119 | ||
120 | ||
70b5944a | 121 | /* Coarray run-time library function decls. */ |
122 | tree gfor_fndecl_caf_init; | |
123 | tree gfor_fndecl_caf_finalize; | |
d44f2f7c | 124 | tree gfor_fndecl_caf_this_image; |
125 | tree gfor_fndecl_caf_num_images; | |
a961ca30 | 126 | tree gfor_fndecl_caf_register; |
d0d776fb | 127 | tree gfor_fndecl_caf_deregister; |
70b5944a | 128 | tree gfor_fndecl_caf_critical; |
129 | tree gfor_fndecl_caf_end_critical; | |
130 | tree gfor_fndecl_caf_sync_all; | |
131 | tree gfor_fndecl_caf_sync_images; | |
132 | tree gfor_fndecl_caf_error_stop; | |
133 | tree gfor_fndecl_caf_error_stop_str; | |
79ed4a8e | 134 | tree gfor_fndecl_co_max; |
135 | tree gfor_fndecl_co_min; | |
136 | tree gfor_fndecl_co_sum; | |
70b5944a | 137 | |
70b5944a | 138 | |
4ee9c684 | 139 | /* Math functions. Many other math functions are handled in |
140 | trans-intrinsic.c. */ | |
141 | ||
920e54ef | 142 | gfc_powdecl_list gfor_fndecl_math_powi[4][3]; |
4ee9c684 | 143 | tree gfor_fndecl_math_ishftc4; |
144 | tree gfor_fndecl_math_ishftc8; | |
920e54ef | 145 | tree gfor_fndecl_math_ishftc16; |
4ee9c684 | 146 | |
147 | ||
148 | /* String functions. */ | |
149 | ||
4ee9c684 | 150 | tree gfor_fndecl_compare_string; |
151 | tree gfor_fndecl_concat_string; | |
152 | tree gfor_fndecl_string_len_trim; | |
153 | tree gfor_fndecl_string_index; | |
154 | tree gfor_fndecl_string_scan; | |
155 | tree gfor_fndecl_string_verify; | |
156 | tree gfor_fndecl_string_trim; | |
5fcc6ec2 | 157 | tree gfor_fndecl_string_minmax; |
4ee9c684 | 158 | tree gfor_fndecl_adjustl; |
159 | tree gfor_fndecl_adjustr; | |
b44437b9 | 160 | tree gfor_fndecl_select_string; |
40b806de | 161 | tree gfor_fndecl_compare_string_char4; |
162 | tree gfor_fndecl_concat_string_char4; | |
163 | tree gfor_fndecl_string_len_trim_char4; | |
164 | tree gfor_fndecl_string_index_char4; | |
165 | tree gfor_fndecl_string_scan_char4; | |
166 | tree gfor_fndecl_string_verify_char4; | |
167 | tree gfor_fndecl_string_trim_char4; | |
168 | tree gfor_fndecl_string_minmax_char4; | |
169 | tree gfor_fndecl_adjustl_char4; | |
170 | tree gfor_fndecl_adjustr_char4; | |
b44437b9 | 171 | tree gfor_fndecl_select_string_char4; |
172 | ||
173 | ||
174 | /* Conversion between character kinds. */ | |
175 | tree gfor_fndecl_convert_char1_to_char4; | |
176 | tree gfor_fndecl_convert_char4_to_char1; | |
4ee9c684 | 177 | |
178 | ||
179 | /* Other misc. runtime library functions. */ | |
4ee9c684 | 180 | tree gfor_fndecl_size0; |
181 | tree gfor_fndecl_size1; | |
9b057c29 | 182 | tree gfor_fndecl_iargc; |
4ee9c684 | 183 | |
59e2a584 | 184 | /* Intrinsic functions implemented in Fortran. */ |
185 | tree gfor_fndecl_sc_kind; | |
4ee9c684 | 186 | tree gfor_fndecl_si_kind; |
187 | tree gfor_fndecl_sr_kind; | |
188 | ||
4e8e57b0 | 189 | /* BLAS gemm functions. */ |
190 | tree gfor_fndecl_sgemm; | |
191 | tree gfor_fndecl_dgemm; | |
192 | tree gfor_fndecl_cgemm; | |
193 | tree gfor_fndecl_zgemm; | |
194 | ||
4ee9c684 | 195 | |
196 | static void | |
197 | gfc_add_decl_to_parent_function (tree decl) | |
198 | { | |
22d678e8 | 199 | gcc_assert (decl); |
4ee9c684 | 200 | DECL_CONTEXT (decl) = DECL_CONTEXT (current_function_decl); |
201 | DECL_NONLOCAL (decl) = 1; | |
1767a056 | 202 | DECL_CHAIN (decl) = saved_parent_function_decls; |
4ee9c684 | 203 | saved_parent_function_decls = decl; |
204 | } | |
205 | ||
206 | void | |
207 | gfc_add_decl_to_function (tree decl) | |
208 | { | |
22d678e8 | 209 | gcc_assert (decl); |
4ee9c684 | 210 | TREE_USED (decl) = 1; |
211 | DECL_CONTEXT (decl) = current_function_decl; | |
1767a056 | 212 | DECL_CHAIN (decl) = saved_function_decls; |
4ee9c684 | 213 | saved_function_decls = decl; |
214 | } | |
215 | ||
6a7084d7 | 216 | static void |
217 | add_decl_as_local (tree decl) | |
218 | { | |
219 | gcc_assert (decl); | |
220 | TREE_USED (decl) = 1; | |
221 | DECL_CONTEXT (decl) = current_function_decl; | |
1767a056 | 222 | DECL_CHAIN (decl) = saved_local_decls; |
6a7084d7 | 223 | saved_local_decls = decl; |
224 | } | |
225 | ||
4ee9c684 | 226 | |
b797d6d3 | 227 | /* Build a backend label declaration. Set TREE_USED for named labels. |
228 | The context of the label is always the current_function_decl. All | |
229 | labels are marked artificial. */ | |
4ee9c684 | 230 | |
231 | tree | |
232 | gfc_build_label_decl (tree label_id) | |
233 | { | |
234 | /* 2^32 temporaries should be enough. */ | |
235 | static unsigned int tmp_num = 1; | |
236 | tree label_decl; | |
237 | char *label_name; | |
238 | ||
239 | if (label_id == NULL_TREE) | |
240 | { | |
241 | /* Build an internal label name. */ | |
242 | ASM_FORMAT_PRIVATE_NAME (label_name, "L", tmp_num++); | |
243 | label_id = get_identifier (label_name); | |
244 | } | |
245 | else | |
246 | label_name = NULL; | |
247 | ||
248 | /* Build the LABEL_DECL node. Labels have no type. */ | |
e60a6f7b | 249 | label_decl = build_decl (input_location, |
250 | LABEL_DECL, label_id, void_type_node); | |
4ee9c684 | 251 | DECL_CONTEXT (label_decl) = current_function_decl; |
252 | DECL_MODE (label_decl) = VOIDmode; | |
253 | ||
b797d6d3 | 254 | /* We always define the label as used, even if the original source |
255 | file never references the label. We don't want all kinds of | |
256 | spurious warnings for old-style Fortran code with too many | |
257 | labels. */ | |
258 | TREE_USED (label_decl) = 1; | |
4ee9c684 | 259 | |
b797d6d3 | 260 | DECL_ARTIFICIAL (label_decl) = 1; |
4ee9c684 | 261 | return label_decl; |
262 | } | |
263 | ||
264 | ||
b31f705b | 265 | /* Set the backend source location of a decl. */ |
266 | ||
267 | void | |
268 | gfc_set_decl_location (tree decl, locus * loc) | |
269 | { | |
b31f705b | 270 | DECL_SOURCE_LOCATION (decl) = loc->lb->location; |
b31f705b | 271 | } |
272 | ||
273 | ||
4ee9c684 | 274 | /* Return the backend label declaration for a given label structure, |
275 | or create it if it doesn't exist yet. */ | |
276 | ||
277 | tree | |
278 | gfc_get_label_decl (gfc_st_label * lp) | |
279 | { | |
4ee9c684 | 280 | if (lp->backend_decl) |
281 | return lp->backend_decl; | |
282 | else | |
283 | { | |
284 | char label_name[GFC_MAX_SYMBOL_LEN + 1]; | |
285 | tree label_decl; | |
286 | ||
287 | /* Validate the label declaration from the front end. */ | |
22d678e8 | 288 | gcc_assert (lp != NULL && lp->value <= MAX_LABEL_VALUE); |
4ee9c684 | 289 | |
290 | /* Build a mangled name for the label. */ | |
291 | sprintf (label_name, "__label_%.6d", lp->value); | |
292 | ||
293 | /* Build the LABEL_DECL node. */ | |
294 | label_decl = gfc_build_label_decl (get_identifier (label_name)); | |
295 | ||
296 | /* Tell the debugger where the label came from. */ | |
f888a3fb | 297 | if (lp->value <= MAX_LABEL_VALUE) /* An internal label. */ |
b31f705b | 298 | gfc_set_decl_location (label_decl, &lp->where); |
4ee9c684 | 299 | else |
300 | DECL_ARTIFICIAL (label_decl) = 1; | |
301 | ||
302 | /* Store the label in the label list and return the LABEL_DECL. */ | |
303 | lp->backend_decl = label_decl; | |
304 | return label_decl; | |
305 | } | |
306 | } | |
307 | ||
308 | ||
309 | /* Convert a gfc_symbol to an identifier of the same name. */ | |
310 | ||
311 | static tree | |
312 | gfc_sym_identifier (gfc_symbol * sym) | |
313 | { | |
0509d0ee | 314 | if (sym->attr.is_main_program && strcmp (sym->name, "main") == 0) |
315 | return (get_identifier ("MAIN__")); | |
316 | else | |
317 | return (get_identifier (sym->name)); | |
4ee9c684 | 318 | } |
319 | ||
320 | ||
321 | /* Construct mangled name from symbol name. */ | |
322 | ||
323 | static tree | |
324 | gfc_sym_mangled_identifier (gfc_symbol * sym) | |
325 | { | |
326 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
327 | ||
c5d33754 | 328 | /* Prevent the mangling of identifiers that have an assigned |
329 | binding label (mainly those that are bind(c)). */ | |
7b2060ba | 330 | if (sym->attr.is_bind_c == 1 && sym->binding_label) |
331 | return get_identifier (sym->binding_label); | |
a90fe829 | 332 | |
4f0fae8e | 333 | if (sym->module == NULL) |
4ee9c684 | 334 | return gfc_sym_identifier (sym); |
335 | else | |
336 | { | |
f08a3f6f | 337 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
4ee9c684 | 338 | return get_identifier (name); |
339 | } | |
340 | } | |
341 | ||
342 | ||
343 | /* Construct mangled function name from symbol name. */ | |
344 | ||
345 | static tree | |
346 | gfc_sym_mangled_function_id (gfc_symbol * sym) | |
347 | { | |
348 | int has_underscore; | |
349 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
350 | ||
c5d33754 | 351 | /* It may be possible to simply use the binding label if it's |
352 | provided, and remove the other checks. Then we could use it | |
353 | for other things if we wished. */ | |
354 | if ((sym->attr.is_bind_c == 1 || sym->attr.is_iso_c == 1) && | |
7b2060ba | 355 | sym->binding_label) |
c5d33754 | 356 | /* use the binding label rather than the mangled name */ |
357 | return get_identifier (sym->binding_label); | |
358 | ||
4f0fae8e | 359 | if (sym->module == NULL || sym->attr.proc == PROC_EXTERNAL |
12441a18 | 360 | || (sym->module != NULL && (sym->attr.external |
361 | || sym->attr.if_source == IFSRC_IFBODY))) | |
4ee9c684 | 362 | { |
a2f97da7 | 363 | /* Main program is mangled into MAIN__. */ |
364 | if (sym->attr.is_main_program) | |
365 | return get_identifier ("MAIN__"); | |
366 | ||
367 | /* Intrinsic procedures are never mangled. */ | |
368 | if (sym->attr.proc == PROC_INTRINSIC) | |
4ee9c684 | 369 | return get_identifier (sym->name); |
370 | ||
371 | if (gfc_option.flag_underscoring) | |
372 | { | |
373 | has_underscore = strchr (sym->name, '_') != 0; | |
374 | if (gfc_option.flag_second_underscore && has_underscore) | |
375 | snprintf (name, sizeof name, "%s__", sym->name); | |
376 | else | |
377 | snprintf (name, sizeof name, "%s_", sym->name); | |
378 | return get_identifier (name); | |
379 | } | |
380 | else | |
381 | return get_identifier (sym->name); | |
382 | } | |
383 | else | |
384 | { | |
f08a3f6f | 385 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
4ee9c684 | 386 | return get_identifier (name); |
387 | } | |
388 | } | |
389 | ||
390 | ||
1236e28b | 391 | void |
392 | gfc_set_decl_assembler_name (tree decl, tree name) | |
393 | { | |
394 | tree target_mangled = targetm.mangle_decl_assembler_name (decl, name); | |
395 | SET_DECL_ASSEMBLER_NAME (decl, target_mangled); | |
396 | } | |
397 | ||
398 | ||
5ed82495 | 399 | /* Returns true if a variable of specified size should go on the stack. */ |
400 | ||
401 | int | |
402 | gfc_can_put_var_on_stack (tree size) | |
403 | { | |
404 | unsigned HOST_WIDE_INT low; | |
405 | ||
406 | if (!INTEGER_CST_P (size)) | |
407 | return 0; | |
408 | ||
409 | if (gfc_option.flag_max_stack_var_size < 0) | |
410 | return 1; | |
411 | ||
e1d65c9f | 412 | if (!tree_fits_uhwi_p (size)) |
5ed82495 | 413 | return 0; |
414 | ||
f9ae6f95 | 415 | low = TREE_INT_CST_LOW (size); |
5ed82495 | 416 | if (low > (unsigned HOST_WIDE_INT) gfc_option.flag_max_stack_var_size) |
417 | return 0; | |
418 | ||
419 | /* TODO: Set a per-function stack size limit. */ | |
420 | ||
421 | return 1; | |
422 | } | |
423 | ||
424 | ||
b7bf3f81 | 425 | /* gfc_finish_cray_pointee sets DECL_VALUE_EXPR for a Cray pointee to |
426 | an expression involving its corresponding pointer. There are | |
427 | 2 cases; one for variable size arrays, and one for everything else, | |
428 | because variable-sized arrays require one fewer level of | |
429 | indirection. */ | |
430 | ||
431 | static void | |
432 | gfc_finish_cray_pointee (tree decl, gfc_symbol *sym) | |
433 | { | |
434 | tree ptr_decl = gfc_get_symbol_decl (sym->cp_pointer); | |
435 | tree value; | |
436 | ||
437 | /* Parameters need to be dereferenced. */ | |
a90fe829 | 438 | if (sym->cp_pointer->attr.dummy) |
389dd41b | 439 | ptr_decl = build_fold_indirect_ref_loc (input_location, |
440 | ptr_decl); | |
b7bf3f81 | 441 | |
442 | /* Check to see if we're dealing with a variable-sized array. */ | |
443 | if (sym->attr.dimension | |
a90fe829 | 444 | && TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE) |
445 | { | |
942043f8 | 446 | /* These decls will be dereferenced later, so we don't dereference |
b7bf3f81 | 447 | them here. */ |
448 | value = convert (TREE_TYPE (decl), ptr_decl); | |
449 | } | |
450 | else | |
451 | { | |
452 | ptr_decl = convert (build_pointer_type (TREE_TYPE (decl)), | |
453 | ptr_decl); | |
389dd41b | 454 | value = build_fold_indirect_ref_loc (input_location, |
455 | ptr_decl); | |
b7bf3f81 | 456 | } |
457 | ||
458 | SET_DECL_VALUE_EXPR (decl, value); | |
459 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
764f1175 | 460 | GFC_DECL_CRAY_POINTEE (decl) = 1; |
b7bf3f81 | 461 | } |
462 | ||
463 | ||
b9c7fce7 | 464 | /* Finish processing of a declaration without an initial value. */ |
4ee9c684 | 465 | |
466 | static void | |
b9c7fce7 | 467 | gfc_finish_decl (tree decl) |
4ee9c684 | 468 | { |
b9c7fce7 | 469 | gcc_assert (TREE_CODE (decl) == PARM_DECL |
470 | || DECL_INITIAL (decl) == NULL_TREE); | |
4ee9c684 | 471 | |
b9c7fce7 | 472 | if (TREE_CODE (decl) != VAR_DECL) |
473 | return; | |
4ee9c684 | 474 | |
b9c7fce7 | 475 | if (DECL_SIZE (decl) == NULL_TREE |
476 | && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE) | |
477 | layout_decl (decl, 0); | |
478 | ||
479 | /* A few consistency checks. */ | |
480 | /* A static variable with an incomplete type is an error if it is | |
481 | initialized. Also if it is not file scope. Otherwise, let it | |
482 | through, but if it is not `extern' then it may cause an error | |
483 | message later. */ | |
484 | /* An automatic variable with an incomplete type is an error. */ | |
485 | ||
486 | /* We should know the storage size. */ | |
487 | gcc_assert (DECL_SIZE (decl) != NULL_TREE | |
a90fe829 | 488 | || (TREE_STATIC (decl) |
b9c7fce7 | 489 | ? (!DECL_INITIAL (decl) || !DECL_CONTEXT (decl)) |
490 | : DECL_EXTERNAL (decl))); | |
491 | ||
492 | /* The storage size should be constant. */ | |
493 | gcc_assert ((!DECL_EXTERNAL (decl) && !TREE_STATIC (decl)) | |
494 | || !DECL_SIZE (decl) | |
495 | || TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST); | |
4ee9c684 | 496 | } |
497 | ||
498 | ||
499 | /* Apply symbol attributes to a variable, and add it to the function scope. */ | |
500 | ||
501 | static void | |
502 | gfc_finish_var_decl (tree decl, gfc_symbol * sym) | |
503 | { | |
c1977dbe | 504 | tree new_type; |
f888a3fb | 505 | /* TREE_ADDRESSABLE means the address of this variable is actually needed. |
4ee9c684 | 506 | This is the equivalent of the TARGET variables. |
507 | We also need to set this if the variable is passed by reference in a | |
508 | CALL statement. */ | |
b549d2a5 | 509 | |
b7bf3f81 | 510 | /* Set DECL_VALUE_EXPR for Cray Pointees. */ |
b549d2a5 | 511 | if (sym->attr.cray_pointee) |
b7bf3f81 | 512 | gfc_finish_cray_pointee (decl, sym); |
b549d2a5 | 513 | |
4ee9c684 | 514 | if (sym->attr.target) |
515 | TREE_ADDRESSABLE (decl) = 1; | |
516 | /* If it wasn't used we wouldn't be getting it. */ | |
517 | TREE_USED (decl) = 1; | |
518 | ||
7415cfe4 | 519 | if (sym->attr.flavor == FL_PARAMETER |
520 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) | |
521 | TREE_READONLY (decl) = 1; | |
522 | ||
4ee9c684 | 523 | /* Chain this decl to the pending declarations. Don't do pushdecl() |
524 | because this would add them to the current scope rather than the | |
525 | function scope. */ | |
526 | if (current_function_decl != NULL_TREE) | |
527 | { | |
7af6a4af | 528 | if (sym->ns->proc_name->backend_decl == current_function_decl |
6a7084d7 | 529 | || sym->result == sym) |
4ee9c684 | 530 | gfc_add_decl_to_function (decl); |
6a7084d7 | 531 | else if (sym->ns->proc_name->attr.flavor == FL_LABEL) |
532 | /* This is a BLOCK construct. */ | |
533 | add_decl_as_local (decl); | |
4ee9c684 | 534 | else |
535 | gfc_add_decl_to_parent_function (decl); | |
536 | } | |
537 | ||
b7bf3f81 | 538 | if (sym->attr.cray_pointee) |
539 | return; | |
540 | ||
c5cb468c | 541 | if(sym->attr.is_bind_c == 1 && sym->binding_label) |
c5d33754 | 542 | { |
543 | /* We need to put variables that are bind(c) into the common | |
544 | segment of the object file, because this is what C would do. | |
545 | gfortran would typically put them in either the BSS or | |
546 | initialized data segments, and only mark them as common if | |
547 | they were part of common blocks. However, if they are not put | |
ea657963 | 548 | into common space, then C cannot initialize global Fortran |
c5d33754 | 549 | variables that it interoperates with and the draft says that |
550 | either Fortran or C should be able to initialize it (but not | |
551 | both, of course.) (J3/04-007, section 15.3). */ | |
552 | TREE_PUBLIC(decl) = 1; | |
553 | DECL_COMMON(decl) = 1; | |
554 | } | |
a90fe829 | 555 | |
4ee9c684 | 556 | /* If a variable is USE associated, it's always external. */ |
557 | if (sym->attr.use_assoc) | |
558 | { | |
559 | DECL_EXTERNAL (decl) = 1; | |
560 | TREE_PUBLIC (decl) = 1; | |
561 | } | |
4f0fae8e | 562 | else if (sym->module && !sym->attr.result && !sym->attr.dummy) |
4ee9c684 | 563 | { |
6b20224d | 564 | /* TODO: Don't set sym->module for result or dummy variables. */ |
7af6a4af | 565 | gcc_assert (current_function_decl == NULL_TREE || sym->result == sym); |
7d6b5754 | 566 | |
87d9f569 | 567 | if (sym->attr.access != ACCESS_PRIVATE || sym->attr.public_used) |
c5cb468c | 568 | TREE_PUBLIC (decl) = 1; |
4ee9c684 | 569 | TREE_STATIC (decl) = 1; |
570 | } | |
571 | ||
f0d4969f | 572 | /* Derived types are a bit peculiar because of the possibility of |
573 | a default initializer; this must be applied each time the variable | |
574 | comes into scope it therefore need not be static. These variables | |
575 | are SAVE_NONE but have an initializer. Otherwise explicitly | |
69b1505f | 576 | initialized variables are SAVE_IMPLICIT and explicitly saved are |
f0d4969f | 577 | SAVE_EXPLICIT. */ |
578 | if (!sym->attr.use_assoc | |
579 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
a961ca30 | 580 | || (sym->value && sym->ns->proc_name->attr.is_main_program) |
581 | || (gfc_option.coarray == GFC_FCOARRAY_LIB | |
582 | && sym->attr.codimension && !sym->attr.allocatable))) | |
4ee9c684 | 583 | TREE_STATIC (decl) = 1; |
ef814c81 | 584 | |
585 | if (sym->attr.volatile_) | |
586 | { | |
ef814c81 | 587 | TREE_THIS_VOLATILE (decl) = 1; |
2364aa60 | 588 | TREE_SIDE_EFFECTS (decl) = 1; |
c1977dbe | 589 | new_type = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE); |
590 | TREE_TYPE (decl) = new_type; | |
a90fe829 | 591 | } |
ef814c81 | 592 | |
4ee9c684 | 593 | /* Keep variables larger than max-stack-var-size off stack. */ |
594 | if (!sym->ns->proc_name->attr.recursive | |
595 | && INTEGER_CST_P (DECL_SIZE_UNIT (decl)) | |
a3f2c0e1 | 596 | && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) |
597 | /* Put variable length auto array pointers always into stack. */ | |
598 | && (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE | |
599 | || sym->attr.dimension == 0 | |
600 | || sym->as->type != AS_EXPLICIT | |
601 | || sym->attr.pointer | |
602 | || sym->attr.allocatable) | |
603 | && !DECL_ARTIFICIAL (decl)) | |
4ee9c684 | 604 | TREE_STATIC (decl) = 1; |
764f1175 | 605 | |
606 | /* Handle threadprivate variables. */ | |
9dda1f80 | 607 | if (sym->attr.threadprivate |
764f1175 | 608 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) |
609 | DECL_TLS_MODEL (decl) = decl_default_tls_model (decl); | |
4ee9c684 | 610 | } |
611 | ||
612 | ||
613 | /* Allocate the lang-specific part of a decl. */ | |
614 | ||
615 | void | |
616 | gfc_allocate_lang_decl (tree decl) | |
617 | { | |
25a27413 | 618 | DECL_LANG_SPECIFIC (decl) = ggc_cleared_alloc<struct lang_decl> (); |
4ee9c684 | 619 | } |
620 | ||
621 | /* Remember a symbol to generate initialization/cleanup code at function | |
622 | entry/exit. */ | |
623 | ||
624 | static void | |
625 | gfc_defer_symbol_init (gfc_symbol * sym) | |
626 | { | |
627 | gfc_symbol *p; | |
628 | gfc_symbol *last; | |
629 | gfc_symbol *head; | |
630 | ||
631 | /* Don't add a symbol twice. */ | |
632 | if (sym->tlink) | |
633 | return; | |
634 | ||
635 | last = head = sym->ns->proc_name; | |
636 | p = last->tlink; | |
637 | ||
638 | /* Make sure that setup code for dummy variables which are used in the | |
639 | setup of other variables is generated first. */ | |
640 | if (sym->attr.dummy) | |
641 | { | |
642 | /* Find the first dummy arg seen after us, or the first non-dummy arg. | |
643 | This is a circular list, so don't go past the head. */ | |
644 | while (p != head | |
645 | && (!p->attr.dummy || p->dummy_order > sym->dummy_order)) | |
646 | { | |
647 | last = p; | |
648 | p = p->tlink; | |
649 | } | |
650 | } | |
651 | /* Insert in between last and p. */ | |
652 | last->tlink = sym; | |
653 | sym->tlink = p; | |
654 | } | |
655 | ||
656 | ||
9f5a9ac5 | 657 | /* Used in gfc_get_symbol_decl and gfc_get_derived_type to obtain the |
658 | backend_decl for a module symbol, if it all ready exists. If the | |
659 | module gsymbol does not exist, it is created. If the symbol does | |
660 | not exist, it is added to the gsymbol namespace. Returns true if | |
661 | an existing backend_decl is found. */ | |
662 | ||
663 | bool | |
664 | gfc_get_module_backend_decl (gfc_symbol *sym) | |
665 | { | |
666 | gfc_gsymbol *gsym; | |
667 | gfc_symbol *s; | |
668 | gfc_symtree *st; | |
669 | ||
670 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
671 | ||
672 | if (!gsym || (gsym->ns && gsym->type == GSYM_MODULE)) | |
673 | { | |
674 | st = NULL; | |
675 | s = NULL; | |
676 | ||
677 | if (gsym) | |
678 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
679 | ||
680 | if (!s) | |
681 | { | |
682 | if (!gsym) | |
683 | { | |
684 | gsym = gfc_get_gsymbol (sym->module); | |
685 | gsym->type = GSYM_MODULE; | |
686 | gsym->ns = gfc_get_namespace (NULL, 0); | |
687 | } | |
688 | ||
689 | st = gfc_new_symtree (&gsym->ns->sym_root, sym->name); | |
690 | st->n.sym = sym; | |
691 | sym->refs++; | |
692 | } | |
693 | else if (sym->attr.flavor == FL_DERIVED) | |
694 | { | |
c2958b6b | 695 | if (s && s->attr.flavor == FL_PROCEDURE) |
696 | { | |
697 | gfc_interface *intr; | |
698 | gcc_assert (s->attr.generic); | |
699 | for (intr = s->generic; intr; intr = intr->next) | |
700 | if (intr->sym->attr.flavor == FL_DERIVED) | |
701 | { | |
702 | s = intr->sym; | |
703 | break; | |
704 | } | |
705 | } | |
706 | ||
9f5a9ac5 | 707 | if (!s->backend_decl) |
708 | s->backend_decl = gfc_get_derived_type (s); | |
709 | gfc_copy_dt_decls_ifequal (s, sym, true); | |
710 | return true; | |
711 | } | |
712 | else if (s->backend_decl) | |
713 | { | |
85ec2f13 | 714 | if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) |
9f5a9ac5 | 715 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, |
716 | true); | |
717 | else if (sym->ts.type == BT_CHARACTER) | |
718 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
719 | sym->backend_decl = s->backend_decl; | |
720 | return true; | |
721 | } | |
722 | } | |
723 | return false; | |
724 | } | |
725 | ||
726 | ||
4ee9c684 | 727 | /* Create an array index type variable with function scope. */ |
728 | ||
729 | static tree | |
730 | create_index_var (const char * pfx, int nest) | |
731 | { | |
732 | tree decl; | |
733 | ||
734 | decl = gfc_create_var_np (gfc_array_index_type, pfx); | |
735 | if (nest) | |
736 | gfc_add_decl_to_parent_function (decl); | |
737 | else | |
738 | gfc_add_decl_to_function (decl); | |
739 | return decl; | |
740 | } | |
741 | ||
742 | ||
743 | /* Create variables to hold all the non-constant bits of info for a | |
744 | descriptorless array. Remember these in the lang-specific part of the | |
745 | type. */ | |
746 | ||
747 | static void | |
748 | gfc_build_qualified_array (tree decl, gfc_symbol * sym) | |
749 | { | |
750 | tree type; | |
751 | int dim; | |
752 | int nest; | |
7b82374f | 753 | gfc_namespace* procns; |
4ee9c684 | 754 | |
755 | type = TREE_TYPE (decl); | |
756 | ||
757 | /* We just use the descriptor, if there is one. */ | |
758 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
759 | return; | |
760 | ||
22d678e8 | 761 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
7b82374f | 762 | procns = gfc_find_proc_namespace (sym->ns); |
763 | nest = (procns->proc_name->backend_decl != current_function_decl) | |
4ee9c684 | 764 | && !sym->attr.contained; |
765 | ||
a961ca30 | 766 | if (sym->attr.codimension && gfc_option.coarray == GFC_FCOARRAY_LIB |
7dce33fe | 767 | && sym->as->type != AS_ASSUMED_SHAPE |
a961ca30 | 768 | && GFC_TYPE_ARRAY_CAF_TOKEN (type) == NULL_TREE) |
769 | { | |
770 | tree token; | |
771 | ||
d881175c | 772 | token = gfc_create_var_np (build_qualified_type (pvoid_type_node, |
773 | TYPE_QUAL_RESTRICT), | |
774 | "caf_token"); | |
a961ca30 | 775 | GFC_TYPE_ARRAY_CAF_TOKEN (type) = token; |
776 | DECL_ARTIFICIAL (token) = 1; | |
777 | TREE_STATIC (token) = 1; | |
778 | gfc_add_decl_to_function (token); | |
779 | } | |
780 | ||
4ee9c684 | 781 | for (dim = 0; dim < GFC_TYPE_ARRAY_RANK (type); dim++) |
782 | { | |
783 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
86254bbf | 784 | { |
785 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
786 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
787 | } | |
9ca15c9b | 788 | /* Don't try to use the unknown bound for assumed shape arrays. */ |
4ee9c684 | 789 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE |
790 | && (sym->as->type != AS_ASSUMED_SIZE | |
791 | || dim < GFC_TYPE_ARRAY_RANK (type) - 1)) | |
86254bbf | 792 | { |
793 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
794 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
795 | } | |
4ee9c684 | 796 | |
797 | if (GFC_TYPE_ARRAY_STRIDE (type, dim) == NULL_TREE) | |
86254bbf | 798 | { |
799 | GFC_TYPE_ARRAY_STRIDE (type, dim) = create_index_var ("stride", nest); | |
800 | TREE_NO_WARNING (GFC_TYPE_ARRAY_STRIDE (type, dim)) = 1; | |
801 | } | |
4ee9c684 | 802 | } |
076094b7 | 803 | for (dim = GFC_TYPE_ARRAY_RANK (type); |
804 | dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type); dim++) | |
805 | { | |
806 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
807 | { | |
808 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
809 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
810 | } | |
811 | /* Don't try to use the unknown ubound for the last coarray dimension. */ | |
812 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE | |
813 | && dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type) - 1) | |
814 | { | |
815 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
816 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
817 | } | |
818 | } | |
4ee9c684 | 819 | if (GFC_TYPE_ARRAY_OFFSET (type) == NULL_TREE) |
820 | { | |
821 | GFC_TYPE_ARRAY_OFFSET (type) = gfc_create_var_np (gfc_array_index_type, | |
822 | "offset"); | |
86254bbf | 823 | TREE_NO_WARNING (GFC_TYPE_ARRAY_OFFSET (type)) = 1; |
824 | ||
4ee9c684 | 825 | if (nest) |
826 | gfc_add_decl_to_parent_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
827 | else | |
828 | gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
829 | } | |
d4163395 | 830 | |
831 | if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE | |
832 | && sym->as->type != AS_ASSUMED_SIZE) | |
86254bbf | 833 | { |
834 | GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest); | |
835 | TREE_NO_WARNING (GFC_TYPE_ARRAY_SIZE (type)) = 1; | |
836 | } | |
d4163395 | 837 | |
838 | if (POINTER_TYPE_P (type)) | |
839 | { | |
840 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type))); | |
841 | gcc_assert (TYPE_LANG_SPECIFIC (type) | |
842 | == TYPE_LANG_SPECIFIC (TREE_TYPE (type))); | |
843 | type = TREE_TYPE (type); | |
844 | } | |
845 | ||
846 | if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type)) | |
847 | { | |
848 | tree size, range; | |
849 | ||
fd779e1d | 850 | size = fold_build2_loc (input_location, MINUS_EXPR, gfc_array_index_type, |
851 | GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node); | |
d4163395 | 852 | range = build_range_type (gfc_array_index_type, gfc_index_zero_node, |
853 | size); | |
854 | TYPE_DOMAIN (type) = range; | |
855 | layout_type (type); | |
856 | } | |
6cf159a6 | 857 | |
6cf159a6 | 858 | if (TYPE_NAME (type) != NULL_TREE |
859 | && GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1) != NULL_TREE | |
860 | && TREE_CODE (GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1)) == VAR_DECL) | |
861 | { | |
862 | tree gtype = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
863 | ||
864 | for (dim = 0; dim < sym->as->rank - 1; dim++) | |
865 | { | |
866 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
867 | gtype = TREE_TYPE (gtype); | |
868 | } | |
869 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
870 | if (TYPE_MAX_VALUE (TYPE_DOMAIN (gtype)) == NULL) | |
871 | TYPE_NAME (type) = NULL_TREE; | |
872 | } | |
873 | ||
874 | if (TYPE_NAME (type) == NULL_TREE) | |
875 | { | |
876 | tree gtype = TREE_TYPE (type), rtype, type_decl; | |
877 | ||
878 | for (dim = sym->as->rank - 1; dim >= 0; dim--) | |
879 | { | |
7130ec9d | 880 | tree lbound, ubound; |
881 | lbound = GFC_TYPE_ARRAY_LBOUND (type, dim); | |
882 | ubound = GFC_TYPE_ARRAY_UBOUND (type, dim); | |
883 | rtype = build_range_type (gfc_array_index_type, lbound, ubound); | |
6cf159a6 | 884 | gtype = build_array_type (gtype, rtype); |
3c8f1d7e | 885 | /* Ensure the bound variables aren't optimized out at -O0. |
886 | For -O1 and above they often will be optimized out, but | |
84bfaaeb | 887 | can be tracked by VTA. Also set DECL_NAMELESS, so that |
888 | the artificial lbound.N or ubound.N DECL_NAME doesn't | |
889 | end up in debug info. */ | |
7130ec9d | 890 | if (lbound && TREE_CODE (lbound) == VAR_DECL |
891 | && DECL_ARTIFICIAL (lbound) && DECL_IGNORED_P (lbound)) | |
892 | { | |
893 | if (DECL_NAME (lbound) | |
894 | && strstr (IDENTIFIER_POINTER (DECL_NAME (lbound)), | |
895 | "lbound") != 0) | |
84bfaaeb | 896 | DECL_NAMELESS (lbound) = 1; |
7130ec9d | 897 | DECL_IGNORED_P (lbound) = 0; |
898 | } | |
899 | if (ubound && TREE_CODE (ubound) == VAR_DECL | |
900 | && DECL_ARTIFICIAL (ubound) && DECL_IGNORED_P (ubound)) | |
901 | { | |
902 | if (DECL_NAME (ubound) | |
903 | && strstr (IDENTIFIER_POINTER (DECL_NAME (ubound)), | |
904 | "ubound") != 0) | |
84bfaaeb | 905 | DECL_NAMELESS (ubound) = 1; |
7130ec9d | 906 | DECL_IGNORED_P (ubound) = 0; |
907 | } | |
6cf159a6 | 908 | } |
e60a6f7b | 909 | TYPE_NAME (type) = type_decl = build_decl (input_location, |
910 | TYPE_DECL, NULL, gtype); | |
6cf159a6 | 911 | DECL_ORIGINAL_TYPE (type_decl) = gtype; |
912 | } | |
4ee9c684 | 913 | } |
914 | ||
915 | ||
916 | /* For some dummy arguments we don't use the actual argument directly. | |
5ed82495 | 917 | Instead we create a local decl and use that. This allows us to perform |
4ee9c684 | 918 | initialization, and construct full type information. */ |
919 | ||
920 | static tree | |
921 | gfc_build_dummy_array_decl (gfc_symbol * sym, tree dummy) | |
922 | { | |
923 | tree decl; | |
924 | tree type; | |
925 | gfc_array_spec *as; | |
926 | char *name; | |
3d8dea5a | 927 | gfc_packed packed; |
4ee9c684 | 928 | int n; |
929 | bool known_size; | |
930 | ||
f00f6dd6 | 931 | if (sym->attr.pointer || sym->attr.allocatable |
932 | || (sym->as && sym->as->type == AS_ASSUMED_RANK)) | |
4ee9c684 | 933 | return dummy; |
934 | ||
935 | /* Add to list of variables if not a fake result variable. */ | |
936 | if (sym->attr.result || sym->attr.dummy) | |
937 | gfc_defer_symbol_init (sym); | |
938 | ||
939 | type = TREE_TYPE (dummy); | |
22d678e8 | 940 | gcc_assert (TREE_CODE (dummy) == PARM_DECL |
4ee9c684 | 941 | && POINTER_TYPE_P (type)); |
942 | ||
f888a3fb | 943 | /* Do we know the element size? */ |
4ee9c684 | 944 | known_size = sym->ts.type != BT_CHARACTER |
eeebe20b | 945 | || INTEGER_CST_P (sym->ts.u.cl->backend_decl); |
a90fe829 | 946 | |
4ee9c684 | 947 | if (known_size && !GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (type))) |
948 | { | |
949 | /* For descriptorless arrays with known element size the actual | |
950 | argument is sufficient. */ | |
22d678e8 | 951 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
4ee9c684 | 952 | gfc_build_qualified_array (dummy, sym); |
953 | return dummy; | |
954 | } | |
955 | ||
956 | type = TREE_TYPE (type); | |
957 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
958 | { | |
cb8e3560 | 959 | /* Create a descriptorless array pointer. */ |
4ee9c684 | 960 | as = sym->as; |
3d8dea5a | 961 | packed = PACKED_NO; |
3d235846 | 962 | |
963 | /* Even when -frepack-arrays is used, symbols with TARGET attribute | |
964 | are not repacked. */ | |
965 | if (!gfc_option.flag_repack_arrays || sym->attr.target) | |
4ee9c684 | 966 | { |
967 | if (as->type == AS_ASSUMED_SIZE) | |
3d8dea5a | 968 | packed = PACKED_FULL; |
4ee9c684 | 969 | } |
970 | else | |
971 | { | |
972 | if (as->type == AS_EXPLICIT) | |
973 | { | |
3d8dea5a | 974 | packed = PACKED_FULL; |
4ee9c684 | 975 | for (n = 0; n < as->rank; n++) |
976 | { | |
977 | if (!(as->upper[n] | |
978 | && as->lower[n] | |
979 | && as->upper[n]->expr_type == EXPR_CONSTANT | |
980 | && as->lower[n]->expr_type == EXPR_CONSTANT)) | |
73bd65ab | 981 | { |
982 | packed = PACKED_PARTIAL; | |
983 | break; | |
984 | } | |
4ee9c684 | 985 | } |
986 | } | |
987 | else | |
3d8dea5a | 988 | packed = PACKED_PARTIAL; |
4ee9c684 | 989 | } |
990 | ||
991 | type = gfc_typenode_for_spec (&sym->ts); | |
e1b3b79b | 992 | type = gfc_get_nodesc_array_type (type, sym->as, packed, |
993 | !sym->attr.target); | |
4ee9c684 | 994 | } |
995 | else | |
996 | { | |
997 | /* We now have an expression for the element size, so create a fully | |
998 | qualified type. Reset sym->backend decl or this will just return the | |
999 | old type. */ | |
d95efb59 | 1000 | DECL_ARTIFICIAL (sym->backend_decl) = 1; |
4ee9c684 | 1001 | sym->backend_decl = NULL_TREE; |
1002 | type = gfc_sym_type (sym); | |
3d8dea5a | 1003 | packed = PACKED_FULL; |
4ee9c684 | 1004 | } |
1005 | ||
1006 | ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0); | |
e60a6f7b | 1007 | decl = build_decl (input_location, |
1008 | VAR_DECL, get_identifier (name), type); | |
4ee9c684 | 1009 | |
1010 | DECL_ARTIFICIAL (decl) = 1; | |
84bfaaeb | 1011 | DECL_NAMELESS (decl) = 1; |
4ee9c684 | 1012 | TREE_PUBLIC (decl) = 0; |
1013 | TREE_STATIC (decl) = 0; | |
1014 | DECL_EXTERNAL (decl) = 0; | |
1015 | ||
a1f1e248 | 1016 | /* Avoid uninitialized warnings for optional dummy arguments. */ |
1017 | if (sym->attr.optional) | |
1018 | TREE_NO_WARNING (decl) = 1; | |
1019 | ||
4ee9c684 | 1020 | /* We should never get deferred shape arrays here. We used to because of |
1021 | frontend bugs. */ | |
22d678e8 | 1022 | gcc_assert (sym->as->type != AS_DEFERRED); |
4ee9c684 | 1023 | |
3d8dea5a | 1024 | if (packed == PACKED_PARTIAL) |
1025 | GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1; | |
1026 | else if (packed == PACKED_FULL) | |
1027 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
4ee9c684 | 1028 | |
1029 | gfc_build_qualified_array (decl, sym); | |
1030 | ||
1031 | if (DECL_LANG_SPECIFIC (dummy)) | |
1032 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (dummy); | |
1033 | else | |
1034 | gfc_allocate_lang_decl (decl); | |
1035 | ||
1036 | GFC_DECL_SAVED_DESCRIPTOR (decl) = dummy; | |
1037 | ||
1038 | if (sym->ns->proc_name->backend_decl == current_function_decl | |
1039 | || sym->attr.contained) | |
1040 | gfc_add_decl_to_function (decl); | |
1041 | else | |
1042 | gfc_add_decl_to_parent_function (decl); | |
1043 | ||
1044 | return decl; | |
1045 | } | |
1046 | ||
9579733e | 1047 | /* For symbol SYM with GFC_DECL_SAVED_DESCRIPTOR used in contained |
1048 | function add a VAR_DECL to the current function with DECL_VALUE_EXPR | |
1049 | pointing to the artificial variable for debug info purposes. */ | |
1050 | ||
1051 | static void | |
1052 | gfc_nonlocal_dummy_array_decl (gfc_symbol *sym) | |
1053 | { | |
1054 | tree decl, dummy; | |
1055 | ||
1056 | if (! nonlocal_dummy_decl_pset) | |
1057 | nonlocal_dummy_decl_pset = pointer_set_create (); | |
1058 | ||
1059 | if (pointer_set_insert (nonlocal_dummy_decl_pset, sym->backend_decl)) | |
1060 | return; | |
1061 | ||
1062 | dummy = GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl); | |
e60a6f7b | 1063 | decl = build_decl (input_location, VAR_DECL, DECL_NAME (dummy), |
9579733e | 1064 | TREE_TYPE (sym->backend_decl)); |
1065 | DECL_ARTIFICIAL (decl) = 0; | |
1066 | TREE_USED (decl) = 1; | |
1067 | TREE_PUBLIC (decl) = 0; | |
1068 | TREE_STATIC (decl) = 0; | |
1069 | DECL_EXTERNAL (decl) = 0; | |
1070 | if (DECL_BY_REFERENCE (dummy)) | |
1071 | DECL_BY_REFERENCE (decl) = 1; | |
1072 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (sym->backend_decl); | |
1073 | SET_DECL_VALUE_EXPR (decl, sym->backend_decl); | |
1074 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
1075 | DECL_CONTEXT (decl) = DECL_CONTEXT (sym->backend_decl); | |
1767a056 | 1076 | DECL_CHAIN (decl) = nonlocal_dummy_decls; |
9579733e | 1077 | nonlocal_dummy_decls = decl; |
1078 | } | |
4ee9c684 | 1079 | |
1080 | /* Return a constant or a variable to use as a string length. Does not | |
1081 | add the decl to the current scope. */ | |
1082 | ||
1083 | static tree | |
1084 | gfc_create_string_length (gfc_symbol * sym) | |
1085 | { | |
eeebe20b | 1086 | gcc_assert (sym->ts.u.cl); |
1087 | gfc_conv_const_charlen (sym->ts.u.cl); | |
a4abf8a0 | 1088 | |
eeebe20b | 1089 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
4ee9c684 | 1090 | { |
a4abf8a0 | 1091 | tree length; |
774bbd60 | 1092 | const char *name; |
4ee9c684 | 1093 | |
873f242d | 1094 | /* The string length variable shall be in static memory if it is either |
1095 | explicitly SAVED, a module variable or with -fno-automatic. Only | |
1096 | relevant is "len=:" - otherwise, it is either a constant length or | |
1097 | it is an automatic variable. */ | |
be125be0 | 1098 | bool static_length = sym->attr.save |
1099 | || sym->ns->proc_name->attr.flavor == FL_MODULE | |
873f242d | 1100 | || (gfc_option.flag_max_stack_var_size == 0 |
1101 | && sym->ts.deferred && !sym->attr.dummy | |
1102 | && !sym->attr.result && !sym->attr.function); | |
be125be0 | 1103 | |
1104 | /* Also prefix the mangled name. We need to call GFC_PREFIX for static | |
1105 | variables as some systems do not support the "." in the assembler name. | |
1106 | For nonstatic variables, the "." does not appear in assembler. */ | |
1107 | if (static_length) | |
1108 | { | |
1109 | if (sym->module) | |
1110 | name = gfc_get_string (GFC_PREFIX ("%s_MOD_%s"), sym->module, | |
1111 | sym->name); | |
1112 | else | |
1113 | name = gfc_get_string (GFC_PREFIX ("%s"), sym->name); | |
1114 | } | |
1115 | else if (sym->module) | |
774bbd60 | 1116 | name = gfc_get_string (".__%s_MOD_%s", sym->module, sym->name); |
1117 | else | |
1118 | name = gfc_get_string (".%s", sym->name); | |
1119 | ||
e60a6f7b | 1120 | length = build_decl (input_location, |
1121 | VAR_DECL, get_identifier (name), | |
9ad09405 | 1122 | gfc_charlen_type_node); |
4ee9c684 | 1123 | DECL_ARTIFICIAL (length) = 1; |
1124 | TREE_USED (length) = 1; | |
d4163395 | 1125 | if (sym->ns->proc_name->tlink != NULL) |
1126 | gfc_defer_symbol_init (sym); | |
a4abf8a0 | 1127 | |
eeebe20b | 1128 | sym->ts.u.cl->backend_decl = length; |
774bbd60 | 1129 | |
be125be0 | 1130 | if (static_length) |
774bbd60 | 1131 | TREE_STATIC (length) = 1; |
1132 | ||
1133 | if (sym->ns->proc_name->attr.flavor == FL_MODULE | |
1134 | && (sym->attr.access != ACCESS_PRIVATE || sym->attr.public_used)) | |
1135 | TREE_PUBLIC (length) = 1; | |
4ee9c684 | 1136 | } |
1137 | ||
eeebe20b | 1138 | gcc_assert (sym->ts.u.cl->backend_decl != NULL_TREE); |
1139 | return sym->ts.u.cl->backend_decl; | |
4ee9c684 | 1140 | } |
1141 | ||
c8f1568f | 1142 | /* If a variable is assigned a label, we add another two auxiliary |
1143 | variables. */ | |
1144 | ||
1145 | static void | |
1146 | gfc_add_assign_aux_vars (gfc_symbol * sym) | |
1147 | { | |
1148 | tree addr; | |
1149 | tree length; | |
1150 | tree decl; | |
1151 | ||
1152 | gcc_assert (sym->backend_decl); | |
1153 | ||
1154 | decl = sym->backend_decl; | |
1155 | gfc_allocate_lang_decl (decl); | |
1156 | GFC_DECL_ASSIGN (decl) = 1; | |
e60a6f7b | 1157 | length = build_decl (input_location, |
1158 | VAR_DECL, create_tmp_var_name (sym->name), | |
c8f1568f | 1159 | gfc_charlen_type_node); |
e60a6f7b | 1160 | addr = build_decl (input_location, |
1161 | VAR_DECL, create_tmp_var_name (sym->name), | |
c8f1568f | 1162 | pvoid_type_node); |
1163 | gfc_finish_var_decl (length, sym); | |
1164 | gfc_finish_var_decl (addr, sym); | |
1165 | /* STRING_LENGTH is also used as flag. Less than -1 means that | |
1166 | ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the | |
1167 | target label's address. Otherwise, value is the length of a format string | |
1168 | and ASSIGN_ADDR is its address. */ | |
1169 | if (TREE_STATIC (length)) | |
35bf1214 | 1170 | DECL_INITIAL (length) = build_int_cst (gfc_charlen_type_node, -2); |
c8f1568f | 1171 | else |
1172 | gfc_defer_symbol_init (sym); | |
1173 | ||
1174 | GFC_DECL_STRING_LEN (decl) = length; | |
1175 | GFC_DECL_ASSIGN_ADDR (decl) = addr; | |
1176 | } | |
4ee9c684 | 1177 | |
36b0a1b0 | 1178 | |
1179 | static tree | |
1180 | add_attributes_to_decl (symbol_attribute sym_attr, tree list) | |
1181 | { | |
1182 | unsigned id; | |
1183 | tree attr; | |
1184 | ||
1185 | for (id = 0; id < EXT_ATTR_NUM; id++) | |
1186 | if (sym_attr.ext_attr & (1 << id)) | |
1187 | { | |
1188 | attr = build_tree_list ( | |
1189 | get_identifier (ext_attr_list[id].middle_end_name), | |
1190 | NULL_TREE); | |
1191 | list = chainon (list, attr); | |
1192 | } | |
1193 | ||
1194 | return list; | |
1195 | } | |
1196 | ||
1197 | ||
802532b9 | 1198 | static void build_function_decl (gfc_symbol * sym, bool global); |
1199 | ||
1200 | ||
4ee9c684 | 1201 | /* Return the decl for a gfc_symbol, create it if it doesn't already |
1202 | exist. */ | |
1203 | ||
1204 | tree | |
1205 | gfc_get_symbol_decl (gfc_symbol * sym) | |
1206 | { | |
1207 | tree decl; | |
1208 | tree length = NULL_TREE; | |
36b0a1b0 | 1209 | tree attributes; |
4ee9c684 | 1210 | int byref; |
cd2c99b8 | 1211 | bool intrinsic_array_parameter = false; |
8b9eb27e | 1212 | bool fun_or_res; |
4ee9c684 | 1213 | |
0b5dc8b5 | 1214 | gcc_assert (sym->attr.referenced |
9e45357a | 1215 | || sym->attr.flavor == FL_PROCEDURE |
1216 | || sym->attr.use_assoc | |
1217 | || sym->ns->proc_name->attr.if_source == IFSRC_IFBODY | |
1218 | || (sym->module && sym->attr.if_source != IFSRC_DECL | |
1219 | && sym->backend_decl)); | |
4ee9c684 | 1220 | |
ff70e443 | 1221 | if (sym->ns && sym->ns->proc_name && sym->ns->proc_name->attr.function) |
4ee9c684 | 1222 | byref = gfc_return_by_reference (sym->ns->proc_name); |
1223 | else | |
1224 | byref = 0; | |
1225 | ||
09c509ed | 1226 | /* Make sure that the vtab for the declared type is completed. */ |
1227 | if (sym->ts.type == BT_CLASS) | |
1228 | { | |
50b4b37b | 1229 | gfc_component *c = CLASS_DATA (sym); |
09c509ed | 1230 | if (!c->ts.u.derived->backend_decl) |
eab71f19 | 1231 | { |
1232 | gfc_find_derived_vtab (c->ts.u.derived); | |
1233 | gfc_get_derived_type (sym->ts.u.derived); | |
1234 | } | |
09c509ed | 1235 | } |
1236 | ||
617125a6 | 1237 | /* All deferred character length procedures need to retain the backend |
1238 | decl, which is a pointer to the character length in the caller's | |
1239 | namespace and to declare a local character length. */ | |
1240 | if (!byref && sym->attr.function | |
1241 | && sym->ts.type == BT_CHARACTER | |
1242 | && sym->ts.deferred | |
1243 | && sym->ts.u.cl->passed_length == NULL | |
1244 | && sym->ts.u.cl->backend_decl | |
1245 | && TREE_CODE (sym->ts.u.cl->backend_decl) == PARM_DECL) | |
1246 | { | |
1247 | sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1248 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1249 | length = gfc_create_string_length (sym); | |
1250 | } | |
1251 | ||
8b9eb27e | 1252 | fun_or_res = byref && (sym->attr.result |
1253 | || (sym->attr.function && sym->ts.deferred)); | |
1254 | if ((sym->attr.dummy && ! sym->attr.function) || fun_or_res) | |
4ee9c684 | 1255 | { |
1256 | /* Return via extra parameter. */ | |
1257 | if (sym->attr.result && byref | |
1258 | && !sym->backend_decl) | |
1259 | { | |
1260 | sym->backend_decl = | |
1261 | DECL_ARGUMENTS (sym->ns->proc_name->backend_decl); | |
c6871095 | 1262 | /* For entry master function skip over the __entry |
1263 | argument. */ | |
1264 | if (sym->ns->proc_name->attr.entry_master) | |
1767a056 | 1265 | sym->backend_decl = DECL_CHAIN (sym->backend_decl); |
4ee9c684 | 1266 | } |
1267 | ||
1268 | /* Dummy variables should already have been created. */ | |
22d678e8 | 1269 | gcc_assert (sym->backend_decl); |
4ee9c684 | 1270 | |
1271 | /* Create a character length variable. */ | |
1272 | if (sym->ts.type == BT_CHARACTER) | |
1273 | { | |
617125a6 | 1274 | /* For a deferred dummy, make a new string length variable. */ |
1275 | if (sym->ts.deferred | |
1276 | && | |
1277 | (sym->ts.u.cl->passed_length == sym->ts.u.cl->backend_decl)) | |
1278 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1279 | ||
8b9eb27e | 1280 | if (sym->ts.deferred && fun_or_res |
617125a6 | 1281 | && sym->ts.u.cl->passed_length == NULL |
1282 | && sym->ts.u.cl->backend_decl) | |
1283 | { | |
1284 | sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1285 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1286 | } | |
1287 | ||
eeebe20b | 1288 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
d4163395 | 1289 | length = gfc_create_string_length (sym); |
1290 | else | |
eeebe20b | 1291 | length = sym->ts.u.cl->backend_decl; |
d4163395 | 1292 | if (TREE_CODE (length) == VAR_DECL |
16a40513 | 1293 | && DECL_FILE_SCOPE_P (length)) |
4ee9c684 | 1294 | { |
d95efb59 | 1295 | /* Add the string length to the same context as the symbol. */ |
1296 | if (DECL_CONTEXT (sym->backend_decl) == current_function_decl) | |
1297 | gfc_add_decl_to_function (length); | |
1298 | else | |
1299 | gfc_add_decl_to_parent_function (length); | |
1300 | ||
1301 | gcc_assert (DECL_CONTEXT (sym->backend_decl) == | |
1302 | DECL_CONTEXT (length)); | |
1303 | ||
d4163395 | 1304 | gfc_defer_symbol_init (sym); |
e8ff3944 | 1305 | } |
4ee9c684 | 1306 | } |
1307 | ||
1308 | /* Use a copy of the descriptor for dummy arrays. */ | |
7a777e43 | 1309 | if ((sym->attr.dimension || sym->attr.codimension) |
1310 | && !TREE_USED (sym->backend_decl)) | |
4ee9c684 | 1311 | { |
d95efb59 | 1312 | decl = gfc_build_dummy_array_decl (sym, sym->backend_decl); |
1313 | /* Prevent the dummy from being detected as unused if it is copied. */ | |
1314 | if (sym->backend_decl != NULL && decl != sym->backend_decl) | |
1315 | DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
1316 | sym->backend_decl = decl; | |
4ee9c684 | 1317 | } |
1318 | ||
1319 | TREE_USED (sym->backend_decl) = 1; | |
c8f1568f | 1320 | if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0) |
1321 | { | |
1322 | gfc_add_assign_aux_vars (sym); | |
1323 | } | |
9579733e | 1324 | |
1325 | if (sym->attr.dimension | |
1326 | && DECL_LANG_SPECIFIC (sym->backend_decl) | |
1327 | && GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl) | |
1328 | && DECL_CONTEXT (sym->backend_decl) != current_function_decl) | |
1329 | gfc_nonlocal_dummy_array_decl (sym); | |
1330 | ||
fd23cc08 | 1331 | if (sym->ts.type == BT_CLASS && sym->backend_decl) |
1332 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1333 | ||
1334 | if (sym->ts.type == BT_CLASS && sym->backend_decl) | |
1335 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1336 | return sym->backend_decl; | |
4ee9c684 | 1337 | } |
1338 | ||
1339 | if (sym->backend_decl) | |
1340 | return sym->backend_decl; | |
1341 | ||
a25debd0 | 1342 | /* Special case for array-valued named constants from intrinsic |
1343 | procedures; those are inlined. */ | |
1344 | if (sym->attr.use_assoc && sym->from_intmod | |
1345 | && sym->attr.flavor == FL_PARAMETER) | |
1346 | intrinsic_array_parameter = true; | |
1347 | ||
044bbd71 | 1348 | /* If use associated compilation, use the module |
094bca96 | 1349 | declaration. */ |
044bbd71 | 1350 | if ((sym->attr.flavor == FL_VARIABLE |
1351 | || sym->attr.flavor == FL_PARAMETER) | |
1352 | && sym->attr.use_assoc | |
1353 | && !intrinsic_array_parameter | |
1354 | && sym->module | |
1355 | && gfc_get_module_backend_decl (sym)) | |
fd23cc08 | 1356 | { |
1357 | if (sym->ts.type == BT_CLASS && sym->backend_decl) | |
1358 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1359 | return sym->backend_decl; | |
1360 | } | |
7ea64434 | 1361 | |
4ee9c684 | 1362 | if (sym->attr.flavor == FL_PROCEDURE) |
1363 | { | |
77d080ca | 1364 | /* Catch functions. Only used for actual parameters, |
802532b9 | 1365 | procedure pointers and procptr initialization targets. */ |
77d080ca | 1366 | if (sym->attr.use_assoc || sym->attr.intrinsic |
1367 | || sym->attr.if_source != IFSRC_DECL) | |
802532b9 | 1368 | { |
1369 | decl = gfc_get_extern_function_decl (sym); | |
1370 | gfc_set_decl_location (decl, &sym->declared_at); | |
1371 | } | |
1372 | else | |
1373 | { | |
1374 | if (!sym->backend_decl) | |
1375 | build_function_decl (sym, false); | |
1376 | decl = sym->backend_decl; | |
1377 | } | |
4ee9c684 | 1378 | return decl; |
1379 | } | |
1380 | ||
1381 | if (sym->attr.intrinsic) | |
1382 | internal_error ("intrinsic variable which isn't a procedure"); | |
1383 | ||
1384 | /* Create string length decl first so that they can be used in the | |
1385 | type declaration. */ | |
1386 | if (sym->ts.type == BT_CHARACTER) | |
1387 | length = gfc_create_string_length (sym); | |
1388 | ||
1389 | /* Create the decl for the variable. */ | |
e60a6f7b | 1390 | decl = build_decl (sym->declared_at.lb->location, |
1391 | VAR_DECL, gfc_sym_identifier (sym), gfc_sym_type (sym)); | |
b31f705b | 1392 | |
1236e28b | 1393 | /* Add attributes to variables. Functions are handled elsewhere. */ |
1394 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); | |
1395 | decl_attributes (&decl, attributes, 0); | |
1396 | ||
f888a3fb | 1397 | /* Symbols from modules should have their assembler names mangled. |
4ee9c684 | 1398 | This is done here rather than in gfc_finish_var_decl because it |
1399 | is different for string length variables. */ | |
4f0fae8e | 1400 | if (sym->module) |
df4d540f | 1401 | { |
1236e28b | 1402 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); |
cd2c99b8 | 1403 | if (sym->attr.use_assoc && !intrinsic_array_parameter) |
df4d540f | 1404 | DECL_IGNORED_P (decl) = 1; |
1405 | } | |
4ee9c684 | 1406 | |
bc5663df | 1407 | if (sym->attr.select_type_temporary) |
1408 | { | |
1409 | DECL_ARTIFICIAL (decl) = 1; | |
1410 | DECL_IGNORED_P (decl) = 1; | |
1411 | } | |
1412 | ||
7a777e43 | 1413 | if (sym->attr.dimension || sym->attr.codimension) |
4ee9c684 | 1414 | { |
1415 | /* Create variables to hold the non-constant bits of array info. */ | |
1416 | gfc_build_qualified_array (decl, sym); | |
1417 | ||
b3c3927c | 1418 | if (sym->attr.contiguous |
1419 | || ((sym->attr.allocatable || !sym->attr.dummy) && !sym->attr.pointer)) | |
4ee9c684 | 1420 | GFC_DECL_PACKED_ARRAY (decl) = 1; |
1421 | } | |
1422 | ||
0a96a7cc | 1423 | /* Remember this variable for allocation/cleanup. */ |
7c7db7f6 | 1424 | if (sym->attr.dimension || sym->attr.allocatable || sym->attr.codimension |
0a96a7cc | 1425 | || (sym->ts.type == BT_CLASS && |
50b4b37b | 1426 | (CLASS_DATA (sym)->attr.dimension |
1427 | || CLASS_DATA (sym)->attr.allocatable)) | |
6b3ceb4e | 1428 | || (sym->ts.type == BT_DERIVED |
1429 | && (sym->ts.u.derived->attr.alloc_comp | |
1430 | || (!sym->attr.pointer && !sym->attr.artificial && !sym->attr.save | |
1431 | && !sym->ns->proc_name->attr.is_main_program | |
1432 | && gfc_is_finalizable (sym->ts.u.derived, NULL)))) | |
0a96a7cc | 1433 | /* This applies a derived type default initializer. */ |
1434 | || (sym->ts.type == BT_DERIVED | |
1435 | && sym->attr.save == SAVE_NONE | |
1436 | && !sym->attr.data | |
1437 | && !sym->attr.allocatable | |
1438 | && (sym->value && !sym->ns->proc_name->attr.is_main_program) | |
cd2c99b8 | 1439 | && !(sym->attr.use_assoc && !intrinsic_array_parameter))) |
f0d4969f | 1440 | gfc_defer_symbol_init (sym); |
2294b616 | 1441 | |
4ee9c684 | 1442 | gfc_finish_var_decl (decl, sym); |
1443 | ||
bda1f152 | 1444 | if (sym->ts.type == BT_CHARACTER) |
4ee9c684 | 1445 | { |
4ee9c684 | 1446 | /* Character variables need special handling. */ |
1447 | gfc_allocate_lang_decl (decl); | |
1448 | ||
bda1f152 | 1449 | if (TREE_CODE (length) != INTEGER_CST) |
4ee9c684 | 1450 | { |
4ee9c684 | 1451 | gfc_finish_var_decl (length, sym); |
22d678e8 | 1452 | gcc_assert (!sym->value); |
4ee9c684 | 1453 | } |
4ee9c684 | 1454 | } |
1033248c | 1455 | else if (sym->attr.subref_array_pointer) |
1456 | { | |
1457 | /* We need the span for these beasts. */ | |
1458 | gfc_allocate_lang_decl (decl); | |
1459 | } | |
1460 | ||
1461 | if (sym->attr.subref_array_pointer) | |
1462 | { | |
1463 | tree span; | |
1464 | GFC_DECL_SUBREF_ARRAY_P (decl) = 1; | |
e60a6f7b | 1465 | span = build_decl (input_location, |
1466 | VAR_DECL, create_tmp_var_name ("span"), | |
1033248c | 1467 | gfc_array_index_type); |
1468 | gfc_finish_var_decl (span, sym); | |
6180d82a | 1469 | TREE_STATIC (span) = TREE_STATIC (decl); |
1470 | DECL_ARTIFICIAL (span) = 1; | |
1033248c | 1471 | |
1472 | GFC_DECL_SPAN (decl) = span; | |
6180d82a | 1473 | GFC_TYPE_ARRAY_SPAN (TREE_TYPE (decl)) = span; |
1033248c | 1474 | } |
1475 | ||
fd23cc08 | 1476 | if (sym->ts.type == BT_CLASS) |
1477 | GFC_DECL_CLASS(decl) = 1; | |
1478 | ||
4ee9c684 | 1479 | sym->backend_decl = decl; |
1480 | ||
c8f1568f | 1481 | if (sym->attr.assign) |
21ebda4d | 1482 | gfc_add_assign_aux_vars (sym); |
c8f1568f | 1483 | |
cd2c99b8 | 1484 | if (intrinsic_array_parameter) |
1485 | { | |
1486 | TREE_STATIC (decl) = 1; | |
1487 | DECL_EXTERNAL (decl) = 0; | |
1488 | } | |
1489 | ||
1490 | if (TREE_STATIC (decl) | |
1491 | && !(sym->attr.use_assoc && !intrinsic_array_parameter) | |
a545a8f8 | 1492 | && (sym->attr.save || sym->ns->proc_name->attr.is_main_program |
1493 | || gfc_option.flag_max_stack_var_size == 0 | |
a961ca30 | 1494 | || sym->attr.data || sym->ns->proc_name->attr.flavor == FL_MODULE) |
0d3bb1de | 1495 | && (gfc_option.coarray != GFC_FCOARRAY_LIB |
1496 | || !sym->attr.codimension || sym->attr.allocatable)) | |
a545a8f8 | 1497 | { |
1498 | /* Add static initializer. For procedures, it is only needed if | |
1499 | SAVE is specified otherwise they need to be reinitialized | |
1500 | every time the procedure is entered. The TREE_STATIC is | |
1501 | in this case due to -fmax-stack-var-size=. */ | |
2e42c60f | 1502 | |
bda1f152 | 1503 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
2e42c60f | 1504 | TREE_TYPE (decl), sym->attr.dimension |
1505 | || (sym->attr.codimension | |
1506 | && sym->attr.allocatable), | |
1507 | sym->attr.pointer || sym->attr.allocatable | |
1508 | || sym->ts.type == BT_CLASS, | |
1509 | sym->attr.proc_pointer); | |
bda1f152 | 1510 | } |
1511 | ||
9579733e | 1512 | if (!TREE_STATIC (decl) |
1513 | && POINTER_TYPE_P (TREE_TYPE (decl)) | |
1514 | && !sym->attr.pointer | |
1515 | && !sym->attr.allocatable | |
bc5663df | 1516 | && !sym->attr.proc_pointer |
1517 | && !sym->attr.select_type_temporary) | |
9579733e | 1518 | DECL_BY_REFERENCE (decl) = 1; |
1519 | ||
ebad7c3e | 1520 | if (sym->attr.vtab |
1521 | || (sym->name[0] == '_' && strncmp ("__def_init", sym->name, 10) == 0)) | |
4c197fd0 | 1522 | TREE_READONLY (decl) = 1; |
ebad7c3e | 1523 | |
4ee9c684 | 1524 | return decl; |
1525 | } | |
1526 | ||
1527 | ||
dbe60343 | 1528 | /* Substitute a temporary variable in place of the real one. */ |
1529 | ||
1530 | void | |
1531 | gfc_shadow_sym (gfc_symbol * sym, tree decl, gfc_saved_var * save) | |
1532 | { | |
1533 | save->attr = sym->attr; | |
1534 | save->decl = sym->backend_decl; | |
1535 | ||
1536 | gfc_clear_attr (&sym->attr); | |
1537 | sym->attr.referenced = 1; | |
1538 | sym->attr.flavor = FL_VARIABLE; | |
1539 | ||
1540 | sym->backend_decl = decl; | |
1541 | } | |
1542 | ||
1543 | ||
1544 | /* Restore the original variable. */ | |
1545 | ||
1546 | void | |
1547 | gfc_restore_sym (gfc_symbol * sym, gfc_saved_var * save) | |
1548 | { | |
1549 | sym->attr = save->attr; | |
1550 | sym->backend_decl = save->decl; | |
1551 | } | |
1552 | ||
1553 | ||
cad0ddcf | 1554 | /* Declare a procedure pointer. */ |
1555 | ||
1556 | static tree | |
1557 | get_proc_pointer_decl (gfc_symbol *sym) | |
1558 | { | |
1559 | tree decl; | |
36b0a1b0 | 1560 | tree attributes; |
cad0ddcf | 1561 | |
1562 | decl = sym->backend_decl; | |
1563 | if (decl) | |
1564 | return decl; | |
1565 | ||
e60a6f7b | 1566 | decl = build_decl (input_location, |
1567 | VAR_DECL, get_identifier (sym->name), | |
cad0ddcf | 1568 | build_pointer_type (gfc_get_function_type (sym))); |
1569 | ||
ea6f8461 | 1570 | if (sym->module) |
1571 | { | |
1572 | /* Apply name mangling. */ | |
1573 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); | |
1574 | if (sym->attr.use_assoc) | |
1575 | DECL_IGNORED_P (decl) = 1; | |
1576 | } | |
a90fe829 | 1577 | |
e72f979a | 1578 | if ((sym->ns->proc_name |
1579 | && sym->ns->proc_name->backend_decl == current_function_decl) | |
cad0ddcf | 1580 | || sym->attr.contained) |
1581 | gfc_add_decl_to_function (decl); | |
cf269acc | 1582 | else if (sym->ns->proc_name->attr.flavor != FL_MODULE) |
cad0ddcf | 1583 | gfc_add_decl_to_parent_function (decl); |
1584 | ||
1585 | sym->backend_decl = decl; | |
1586 | ||
cf269acc | 1587 | /* If a variable is USE associated, it's always external. */ |
1588 | if (sym->attr.use_assoc) | |
1589 | { | |
1590 | DECL_EXTERNAL (decl) = 1; | |
1591 | TREE_PUBLIC (decl) = 1; | |
1592 | } | |
1593 | else if (sym->module && sym->ns->proc_name->attr.flavor == FL_MODULE) | |
1594 | { | |
1595 | /* This is the declaration of a module variable. */ | |
1596 | TREE_PUBLIC (decl) = 1; | |
1597 | TREE_STATIC (decl) = 1; | |
1598 | } | |
1599 | ||
cad0ddcf | 1600 | if (!sym->attr.use_assoc |
1601 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
1602 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
1603 | TREE_STATIC (decl) = 1; | |
1604 | ||
1605 | if (TREE_STATIC (decl) && sym->value) | |
1606 | { | |
1607 | /* Add static initializer. */ | |
1608 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
802532b9 | 1609 | TREE_TYPE (decl), |
1610 | sym->attr.dimension, | |
1611 | false, true); | |
cad0ddcf | 1612 | } |
1613 | ||
8fb1768c | 1614 | /* Handle threadprivate procedure pointers. */ |
1615 | if (sym->attr.threadprivate | |
1616 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) | |
1617 | DECL_TLS_MODEL (decl) = decl_default_tls_model (decl); | |
1618 | ||
36b0a1b0 | 1619 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1620 | decl_attributes (&decl, attributes, 0); | |
1621 | ||
cad0ddcf | 1622 | return decl; |
1623 | } | |
1624 | ||
1625 | ||
4ee9c684 | 1626 | /* Get a basic decl for an external function. */ |
1627 | ||
1628 | tree | |
1629 | gfc_get_extern_function_decl (gfc_symbol * sym) | |
1630 | { | |
1631 | tree type; | |
1632 | tree fndecl; | |
36b0a1b0 | 1633 | tree attributes; |
4ee9c684 | 1634 | gfc_expr e; |
1635 | gfc_intrinsic_sym *isym; | |
1636 | gfc_expr argexpr; | |
17000b91 | 1637 | char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */ |
4ee9c684 | 1638 | tree name; |
1639 | tree mangled_name; | |
83aeedb9 | 1640 | gfc_gsymbol *gsym; |
4ee9c684 | 1641 | |
1642 | if (sym->backend_decl) | |
1643 | return sym->backend_decl; | |
1644 | ||
1b716045 | 1645 | /* We should never be creating external decls for alternate entry points. |
1646 | The procedure may be an alternate entry point, but we don't want/need | |
1647 | to know that. */ | |
22d678e8 | 1648 | gcc_assert (!(sym->attr.entry || sym->attr.entry_master)); |
1b716045 | 1649 | |
cad0ddcf | 1650 | if (sym->attr.proc_pointer) |
1651 | return get_proc_pointer_decl (sym); | |
1652 | ||
83aeedb9 | 1653 | /* See if this is an external procedure from the same file. If so, |
1654 | return the backend_decl. */ | |
da5c730d | 1655 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->binding_label |
1656 | ? sym->binding_label : sym->name); | |
83aeedb9 | 1657 | |
c8b913ab | 1658 | if (gsym && !gsym->defined) |
1659 | gsym = NULL; | |
1660 | ||
1661 | /* This can happen because of C binding. */ | |
1662 | if (gsym && gsym->ns && gsym->ns->proc_name | |
1663 | && gsym->ns->proc_name->attr.flavor == FL_MODULE) | |
1664 | goto module_sym; | |
1665 | ||
044bbd71 | 1666 | if ((!sym->attr.use_assoc || sym->attr.if_source != IFSRC_DECL) |
1667 | && !sym->backend_decl | |
1668 | && gsym && gsym->ns | |
1669 | && ((gsym->type == GSYM_SUBROUTINE) || (gsym->type == GSYM_FUNCTION)) | |
1670 | && (gsym->ns->proc_name->backend_decl || !sym->attr.intrinsic)) | |
83aeedb9 | 1671 | { |
d896f9b3 | 1672 | if (!gsym->ns->proc_name->backend_decl) |
1673 | { | |
1674 | /* By construction, the external function cannot be | |
1675 | a contained procedure. */ | |
1676 | locus old_loc; | |
d896f9b3 | 1677 | |
4671339c | 1678 | gfc_save_backend_locus (&old_loc); |
9078126c | 1679 | push_cfun (NULL); |
d896f9b3 | 1680 | |
1681 | gfc_create_function_decl (gsym->ns, true); | |
1682 | ||
1683 | pop_cfun (); | |
4671339c | 1684 | gfc_restore_backend_locus (&old_loc); |
d896f9b3 | 1685 | } |
1686 | ||
83aeedb9 | 1687 | /* If the namespace has entries, the proc_name is the |
1688 | entry master. Find the entry and use its backend_decl. | |
1689 | otherwise, use the proc_name backend_decl. */ | |
1690 | if (gsym->ns->entries) | |
1691 | { | |
1692 | gfc_entry_list *entry = gsym->ns->entries; | |
1693 | ||
1694 | for (; entry; entry = entry->next) | |
1695 | { | |
1696 | if (strcmp (gsym->name, entry->sym->name) == 0) | |
1697 | { | |
1698 | sym->backend_decl = entry->sym->backend_decl; | |
1699 | break; | |
1700 | } | |
1701 | } | |
1702 | } | |
1703 | else | |
40c74b02 | 1704 | sym->backend_decl = gsym->ns->proc_name->backend_decl; |
83aeedb9 | 1705 | |
1706 | if (sym->backend_decl) | |
40c74b02 | 1707 | { |
1708 | /* Avoid problems of double deallocation of the backend declaration | |
1709 | later in gfc_trans_use_stmts; cf. PR 45087. */ | |
1710 | if (sym->attr.if_source != IFSRC_DECL && sym->attr.use_assoc) | |
1711 | sym->attr.use_assoc = 0; | |
1712 | ||
1713 | return sym->backend_decl; | |
1714 | } | |
83aeedb9 | 1715 | } |
1716 | ||
7ea64434 | 1717 | /* See if this is a module procedure from the same file. If so, |
1718 | return the backend_decl. */ | |
1719 | if (sym->module) | |
1720 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
1721 | ||
c8b913ab | 1722 | module_sym: |
1723 | if (gsym && gsym->ns | |
1724 | && (gsym->type == GSYM_MODULE | |
1725 | || (gsym->ns->proc_name && gsym->ns->proc_name->attr.flavor == FL_MODULE))) | |
7ea64434 | 1726 | { |
1727 | gfc_symbol *s; | |
1728 | ||
1729 | s = NULL; | |
c8b913ab | 1730 | if (gsym->type == GSYM_MODULE) |
1731 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
1732 | else | |
1733 | gfc_find_symbol (gsym->sym_name, gsym->ns, 0, &s); | |
1734 | ||
7ea64434 | 1735 | if (s && s->backend_decl) |
1736 | { | |
85ec2f13 | 1737 | if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) |
1738 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, | |
1739 | true); | |
1740 | else if (sym->ts.type == BT_CHARACTER) | |
1741 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
7ea64434 | 1742 | sym->backend_decl = s->backend_decl; |
1743 | return sym->backend_decl; | |
1744 | } | |
1745 | } | |
1746 | ||
4ee9c684 | 1747 | if (sym->attr.intrinsic) |
1748 | { | |
1749 | /* Call the resolution function to get the actual name. This is | |
1750 | a nasty hack which relies on the resolution functions only looking | |
1751 | at the first argument. We pass NULL for the second argument | |
1752 | otherwise things like AINT get confused. */ | |
1753 | isym = gfc_find_function (sym->name); | |
22d678e8 | 1754 | gcc_assert (isym->resolve.f0 != NULL); |
4ee9c684 | 1755 | |
1756 | memset (&e, 0, sizeof (e)); | |
1757 | e.expr_type = EXPR_FUNCTION; | |
1758 | ||
1759 | memset (&argexpr, 0, sizeof (argexpr)); | |
22d678e8 | 1760 | gcc_assert (isym->formal); |
4ee9c684 | 1761 | argexpr.ts = isym->formal->ts; |
1762 | ||
1763 | if (isym->formal->next == NULL) | |
1764 | isym->resolve.f1 (&e, &argexpr); | |
1765 | else | |
1766 | { | |
37e0271a | 1767 | if (isym->formal->next->next == NULL) |
1768 | isym->resolve.f2 (&e, &argexpr, NULL); | |
1769 | else | |
1770 | { | |
7fe55cc9 | 1771 | if (isym->formal->next->next->next == NULL) |
1772 | isym->resolve.f3 (&e, &argexpr, NULL, NULL); | |
1773 | else | |
1774 | { | |
1775 | /* All specific intrinsics take less than 5 arguments. */ | |
1776 | gcc_assert (isym->formal->next->next->next->next == NULL); | |
1777 | isym->resolve.f4 (&e, &argexpr, NULL, NULL, NULL); | |
1778 | } | |
37e0271a | 1779 | } |
4ee9c684 | 1780 | } |
bdaed7d2 | 1781 | |
1782 | if (gfc_option.flag_f2c | |
1783 | && ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind) | |
1784 | || e.ts.type == BT_COMPLEX)) | |
1785 | { | |
1786 | /* Specific which needs a different implementation if f2c | |
1787 | calling conventions are used. */ | |
17000b91 | 1788 | sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name); |
bdaed7d2 | 1789 | } |
1790 | else | |
17000b91 | 1791 | sprintf (s, "_gfortran_specific%s", e.value.function.name); |
bdaed7d2 | 1792 | |
4ee9c684 | 1793 | name = get_identifier (s); |
1794 | mangled_name = name; | |
1795 | } | |
1796 | else | |
1797 | { | |
1798 | name = gfc_sym_identifier (sym); | |
1799 | mangled_name = gfc_sym_mangled_function_id (sym); | |
1800 | } | |
1801 | ||
1802 | type = gfc_get_function_type (sym); | |
e60a6f7b | 1803 | fndecl = build_decl (input_location, |
1804 | FUNCTION_DECL, name, type); | |
4ee9c684 | 1805 | |
e27454ee | 1806 | /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; |
1807 | TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
851d9296 | 1808 | the opposite of declaring a function as static in C). */ |
e27454ee | 1809 | DECL_EXTERNAL (fndecl) = 1; |
1810 | TREE_PUBLIC (fndecl) = 1; | |
1811 | ||
1236e28b | 1812 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1813 | decl_attributes (&fndecl, attributes, 0); | |
1814 | ||
1815 | gfc_set_decl_assembler_name (fndecl, mangled_name); | |
4ee9c684 | 1816 | |
1817 | /* Set the context of this decl. */ | |
1818 | if (0 && sym->ns && sym->ns->proc_name) | |
1819 | { | |
1820 | /* TODO: Add external decls to the appropriate scope. */ | |
1821 | DECL_CONTEXT (fndecl) = sym->ns->proc_name->backend_decl; | |
1822 | } | |
1823 | else | |
1824 | { | |
f888a3fb | 1825 | /* Global declaration, e.g. intrinsic subroutine. */ |
4ee9c684 | 1826 | DECL_CONTEXT (fndecl) = NULL_TREE; |
1827 | } | |
1828 | ||
4ee9c684 | 1829 | /* Set attributes for PURE functions. A call to PURE function in the |
1830 | Fortran 95 sense is both pure and without side effects in the C | |
1831 | sense. */ | |
bead0399 | 1832 | if (sym->attr.pure || sym->attr.implicit_pure) |
4ee9c684 | 1833 | { |
4d4b9f0e | 1834 | if (sym->attr.function && !gfc_return_by_reference (sym)) |
9c2a0c05 | 1835 | DECL_PURE_P (fndecl) = 1; |
be393645 | 1836 | /* TODO: check if pure SUBROUTINEs don't have INTENT(OUT) |
1837 | parameters and don't use alternate returns (is this | |
1838 | allowed?). In that case, calls to them are meaningless, and | |
1b716045 | 1839 | can be optimized away. See also in build_function_decl(). */ |
be393645 | 1840 | TREE_SIDE_EFFECTS (fndecl) = 0; |
4ee9c684 | 1841 | } |
1842 | ||
6e27d773 | 1843 | /* Mark non-returning functions. */ |
1844 | if (sym->attr.noreturn) | |
1845 | TREE_THIS_VOLATILE(fndecl) = 1; | |
1846 | ||
4ee9c684 | 1847 | sym->backend_decl = fndecl; |
1848 | ||
1849 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1850 | pushdecl_top_level (fndecl); | |
1851 | ||
15b28553 | 1852 | if (sym->formal_ns |
1853 | && sym->formal_ns->proc_name == sym | |
1854 | && sym->formal_ns->omp_declare_simd) | |
1855 | gfc_trans_omp_declare_simd (sym->formal_ns); | |
1856 | ||
4ee9c684 | 1857 | return fndecl; |
1858 | } | |
1859 | ||
1860 | ||
1861 | /* Create a declaration for a procedure. For external functions (in the C | |
1b716045 | 1862 | sense) use gfc_get_extern_function_decl. HAS_ENTRIES is true if this is |
1863 | a master function with alternate entry points. */ | |
4ee9c684 | 1864 | |
1b716045 | 1865 | static void |
d896f9b3 | 1866 | build_function_decl (gfc_symbol * sym, bool global) |
4ee9c684 | 1867 | { |
36b0a1b0 | 1868 | tree fndecl, type, attributes; |
4ee9c684 | 1869 | symbol_attribute attr; |
1b716045 | 1870 | tree result_decl; |
4ee9c684 | 1871 | gfc_formal_arglist *f; |
1872 | ||
22d678e8 | 1873 | gcc_assert (!sym->attr.external); |
4ee9c684 | 1874 | |
802532b9 | 1875 | if (sym->backend_decl) |
1876 | return; | |
1877 | ||
b31f705b | 1878 | /* Set the line and filename. sym->declared_at seems to point to the |
1879 | last statement for subroutines, but it'll do for now. */ | |
1880 | gfc_set_backend_locus (&sym->declared_at); | |
1881 | ||
4ee9c684 | 1882 | /* Allow only one nesting level. Allow public declarations. */ |
22d678e8 | 1883 | gcc_assert (current_function_decl == NULL_TREE |
16a40513 | 1884 | || DECL_FILE_SCOPE_P (current_function_decl) |
1885 | || (TREE_CODE (DECL_CONTEXT (current_function_decl)) | |
1886 | == NAMESPACE_DECL)); | |
4ee9c684 | 1887 | |
1888 | type = gfc_get_function_type (sym); | |
e60a6f7b | 1889 | fndecl = build_decl (input_location, |
1890 | FUNCTION_DECL, gfc_sym_identifier (sym), type); | |
4ee9c684 | 1891 | |
1236e28b | 1892 | attr = sym->attr; |
1893 | ||
e27454ee | 1894 | /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; |
1895 | TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
851d9296 | 1896 | the opposite of declaring a function as static in C). */ |
e27454ee | 1897 | DECL_EXTERNAL (fndecl) = 0; |
1898 | ||
7d6b5754 | 1899 | if (sym->attr.access == ACCESS_UNKNOWN && sym->module |
1900 | && (sym->ns->default_access == ACCESS_PRIVATE | |
1901 | || (sym->ns->default_access == ACCESS_UNKNOWN | |
1902 | && gfc_option.flag_module_private))) | |
1903 | sym->attr.access = ACCESS_PRIVATE; | |
1904 | ||
e27454ee | 1905 | if (!current_function_decl |
c5cb468c | 1906 | && !sym->attr.entry_master && !sym->attr.is_main_program |
b1f74325 | 1907 | && (sym->attr.access != ACCESS_PRIVATE || sym->binding_label |
1908 | || sym->attr.public_used)) | |
e27454ee | 1909 | TREE_PUBLIC (fndecl) = 1; |
1910 | ||
9e45357a | 1911 | if (sym->attr.referenced || sym->attr.entry_master) |
1912 | TREE_USED (fndecl) = 1; | |
1913 | ||
1236e28b | 1914 | attributes = add_attributes_to_decl (attr, NULL_TREE); |
1915 | decl_attributes (&fndecl, attributes, 0); | |
1916 | ||
4ee9c684 | 1917 | /* Figure out the return type of the declared function, and build a |
f888a3fb | 1918 | RESULT_DECL for it. If this is a subroutine with alternate |
4ee9c684 | 1919 | returns, build a RESULT_DECL for it. */ |
4ee9c684 | 1920 | result_decl = NULL_TREE; |
1921 | /* TODO: Shouldn't this just be TREE_TYPE (TREE_TYPE (fndecl)). */ | |
1922 | if (attr.function) | |
1923 | { | |
1924 | if (gfc_return_by_reference (sym)) | |
1925 | type = void_type_node; | |
1926 | else | |
1927 | { | |
1928 | if (sym->result != sym) | |
1929 | result_decl = gfc_sym_identifier (sym->result); | |
1930 | ||
1931 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
1932 | } | |
1933 | } | |
1934 | else | |
1935 | { | |
1936 | /* Look for alternate return placeholders. */ | |
1937 | int has_alternate_returns = 0; | |
6777213b | 1938 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
4ee9c684 | 1939 | { |
1940 | if (f->sym == NULL) | |
1941 | { | |
1942 | has_alternate_returns = 1; | |
1943 | break; | |
1944 | } | |
1945 | } | |
1946 | ||
1947 | if (has_alternate_returns) | |
1948 | type = integer_type_node; | |
1949 | else | |
1950 | type = void_type_node; | |
1951 | } | |
1952 | ||
e60a6f7b | 1953 | result_decl = build_decl (input_location, |
1954 | RESULT_DECL, result_decl, type); | |
540edea7 | 1955 | DECL_ARTIFICIAL (result_decl) = 1; |
1956 | DECL_IGNORED_P (result_decl) = 1; | |
4ee9c684 | 1957 | DECL_CONTEXT (result_decl) = fndecl; |
1958 | DECL_RESULT (fndecl) = result_decl; | |
1959 | ||
1960 | /* Don't call layout_decl for a RESULT_DECL. | |
f888a3fb | 1961 | layout_decl (result_decl, 0); */ |
4ee9c684 | 1962 | |
4ee9c684 | 1963 | /* TREE_STATIC means the function body is defined here. */ |
e4b2c26c | 1964 | TREE_STATIC (fndecl) = 1; |
4ee9c684 | 1965 | |
f888a3fb | 1966 | /* Set attributes for PURE functions. A call to a PURE function in the |
4ee9c684 | 1967 | Fortran 95 sense is both pure and without side effects in the C |
1968 | sense. */ | |
bead0399 | 1969 | if (attr.pure || attr.implicit_pure) |
4ee9c684 | 1970 | { |
be393645 | 1971 | /* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments |
a0527218 | 1972 | including an alternate return. In that case it can also be |
231e961a | 1973 | marked as PURE. See also in gfc_get_extern_function_decl(). */ |
4c319962 | 1974 | if (attr.function && !gfc_return_by_reference (sym)) |
9c2a0c05 | 1975 | DECL_PURE_P (fndecl) = 1; |
4ee9c684 | 1976 | TREE_SIDE_EFFECTS (fndecl) = 0; |
1977 | } | |
1978 | ||
36b0a1b0 | 1979 | |
4ee9c684 | 1980 | /* Layout the function declaration and put it in the binding level |
1981 | of the current function. */ | |
d896f9b3 | 1982 | |
4c197fd0 | 1983 | if (global) |
d896f9b3 | 1984 | pushdecl_top_level (fndecl); |
1985 | else | |
1986 | pushdecl (fndecl); | |
1b716045 | 1987 | |
16a40513 | 1988 | /* Perform name mangling if this is a top level or module procedure. */ |
1989 | if (current_function_decl == NULL_TREE) | |
1990 | gfc_set_decl_assembler_name (fndecl, gfc_sym_mangled_function_id (sym)); | |
1991 | ||
1b716045 | 1992 | sym->backend_decl = fndecl; |
1993 | } | |
1994 | ||
1995 | ||
1996 | /* Create the DECL_ARGUMENTS for a procedure. */ | |
1997 | ||
1998 | static void | |
1999 | create_function_arglist (gfc_symbol * sym) | |
2000 | { | |
2001 | tree fndecl; | |
2002 | gfc_formal_arglist *f; | |
d4163395 | 2003 | tree typelist, hidden_typelist; |
2004 | tree arglist, hidden_arglist; | |
1b716045 | 2005 | tree type; |
2006 | tree parm; | |
2007 | ||
2008 | fndecl = sym->backend_decl; | |
2009 | ||
e4b2c26c | 2010 | /* Build formal argument list. Make sure that their TREE_CONTEXT is |
2011 | the new FUNCTION_DECL node. */ | |
e4b2c26c | 2012 | arglist = NULL_TREE; |
d4163395 | 2013 | hidden_arglist = NULL_TREE; |
e4b2c26c | 2014 | typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
1b716045 | 2015 | |
2016 | if (sym->attr.entry_master) | |
2017 | { | |
2018 | type = TREE_VALUE (typelist); | |
e60a6f7b | 2019 | parm = build_decl (input_location, |
2020 | PARM_DECL, get_identifier ("__entry"), type); | |
a90fe829 | 2021 | |
1b716045 | 2022 | DECL_CONTEXT (parm) = fndecl; |
2023 | DECL_ARG_TYPE (parm) = type; | |
2024 | TREE_READONLY (parm) = 1; | |
b9c7fce7 | 2025 | gfc_finish_decl (parm); |
d95efb59 | 2026 | DECL_ARTIFICIAL (parm) = 1; |
1b716045 | 2027 | |
2028 | arglist = chainon (arglist, parm); | |
2029 | typelist = TREE_CHAIN (typelist); | |
2030 | } | |
2031 | ||
e4b2c26c | 2032 | if (gfc_return_by_reference (sym)) |
4ee9c684 | 2033 | { |
d4163395 | 2034 | tree type = TREE_VALUE (typelist), length = NULL; |
4ee9c684 | 2035 | |
e4b2c26c | 2036 | if (sym->ts.type == BT_CHARACTER) |
2037 | { | |
e4b2c26c | 2038 | /* Length of character result. */ |
d4163395 | 2039 | tree len_type = TREE_VALUE (TREE_CHAIN (typelist)); |
4ee9c684 | 2040 | |
e60a6f7b | 2041 | length = build_decl (input_location, |
2042 | PARM_DECL, | |
e4b2c26c | 2043 | get_identifier (".__result"), |
d4163395 | 2044 | len_type); |
eeebe20b | 2045 | if (!sym->ts.u.cl->length) |
e4b2c26c | 2046 | { |
eeebe20b | 2047 | sym->ts.u.cl->backend_decl = length; |
e4b2c26c | 2048 | TREE_USED (length) = 1; |
4ee9c684 | 2049 | } |
22d678e8 | 2050 | gcc_assert (TREE_CODE (length) == PARM_DECL); |
e4b2c26c | 2051 | DECL_CONTEXT (length) = fndecl; |
d4163395 | 2052 | DECL_ARG_TYPE (length) = len_type; |
e4b2c26c | 2053 | TREE_READONLY (length) = 1; |
b5b40b3f | 2054 | DECL_ARTIFICIAL (length) = 1; |
b9c7fce7 | 2055 | gfc_finish_decl (length); |
eeebe20b | 2056 | if (sym->ts.u.cl->backend_decl == NULL |
2057 | || sym->ts.u.cl->backend_decl == length) | |
d4163395 | 2058 | { |
2059 | gfc_symbol *arg; | |
2060 | tree backend_decl; | |
4ee9c684 | 2061 | |
eeebe20b | 2062 | if (sym->ts.u.cl->backend_decl == NULL) |
d4163395 | 2063 | { |
e60a6f7b | 2064 | tree len = build_decl (input_location, |
2065 | VAR_DECL, | |
d4163395 | 2066 | get_identifier ("..__result"), |
2067 | gfc_charlen_type_node); | |
2068 | DECL_ARTIFICIAL (len) = 1; | |
2069 | TREE_USED (len) = 1; | |
eeebe20b | 2070 | sym->ts.u.cl->backend_decl = len; |
d4163395 | 2071 | } |
4ee9c684 | 2072 | |
d4163395 | 2073 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ |
2074 | arg = sym->result ? sym->result : sym; | |
2075 | backend_decl = arg->backend_decl; | |
2076 | /* Temporary clear it, so that gfc_sym_type creates complete | |
2077 | type. */ | |
2078 | arg->backend_decl = NULL; | |
2079 | type = gfc_sym_type (arg); | |
2080 | arg->backend_decl = backend_decl; | |
2081 | type = build_reference_type (type); | |
2082 | } | |
2083 | } | |
4ee9c684 | 2084 | |
e60a6f7b | 2085 | parm = build_decl (input_location, |
2086 | PARM_DECL, get_identifier ("__result"), type); | |
4ee9c684 | 2087 | |
d4163395 | 2088 | DECL_CONTEXT (parm) = fndecl; |
2089 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2090 | TREE_READONLY (parm) = 1; | |
2091 | DECL_ARTIFICIAL (parm) = 1; | |
b9c7fce7 | 2092 | gfc_finish_decl (parm); |
4ee9c684 | 2093 | |
d4163395 | 2094 | arglist = chainon (arglist, parm); |
2095 | typelist = TREE_CHAIN (typelist); | |
4ee9c684 | 2096 | |
d4163395 | 2097 | if (sym->ts.type == BT_CHARACTER) |
2098 | { | |
2099 | gfc_allocate_lang_decl (parm); | |
2100 | arglist = chainon (arglist, length); | |
e4b2c26c | 2101 | typelist = TREE_CHAIN (typelist); |
2102 | } | |
2103 | } | |
4ee9c684 | 2104 | |
d4163395 | 2105 | hidden_typelist = typelist; |
6777213b | 2106 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
d4163395 | 2107 | if (f->sym != NULL) /* Ignore alternate returns. */ |
2108 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2109 | ||
6777213b | 2110 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
e4b2c26c | 2111 | { |
2112 | char name[GFC_MAX_SYMBOL_LEN + 2]; | |
d4163395 | 2113 | |
e4b2c26c | 2114 | /* Ignore alternate returns. */ |
2115 | if (f->sym == NULL) | |
2116 | continue; | |
4ee9c684 | 2117 | |
e4b2c26c | 2118 | type = TREE_VALUE (typelist); |
4ee9c684 | 2119 | |
296db1d1 | 2120 | if (f->sym->ts.type == BT_CHARACTER |
2121 | && (!sym->attr.is_bind_c || sym->attr.entry_master)) | |
d4163395 | 2122 | { |
2123 | tree len_type = TREE_VALUE (hidden_typelist); | |
2124 | tree length = NULL_TREE; | |
617125a6 | 2125 | if (!f->sym->ts.deferred) |
2126 | gcc_assert (len_type == gfc_charlen_type_node); | |
2127 | else | |
2128 | gcc_assert (POINTER_TYPE_P (len_type)); | |
d4163395 | 2129 | |
2130 | strcpy (&name[1], f->sym->name); | |
2131 | name[0] = '_'; | |
e60a6f7b | 2132 | length = build_decl (input_location, |
2133 | PARM_DECL, get_identifier (name), len_type); | |
4ee9c684 | 2134 | |
d4163395 | 2135 | hidden_arglist = chainon (hidden_arglist, length); |
2136 | DECL_CONTEXT (length) = fndecl; | |
2137 | DECL_ARTIFICIAL (length) = 1; | |
2138 | DECL_ARG_TYPE (length) = len_type; | |
2139 | TREE_READONLY (length) = 1; | |
b9c7fce7 | 2140 | gfc_finish_decl (length); |
4ee9c684 | 2141 | |
a4abf8a0 | 2142 | /* Remember the passed value. */ |
a90fe829 | 2143 | if (!f->sym->ts.u.cl || f->sym->ts.u.cl->passed_length) |
6be7c32c | 2144 | { |
2145 | /* This can happen if the same type is used for multiple | |
2146 | arguments. We need to copy cl as otherwise | |
2147 | cl->passed_length gets overwritten. */ | |
d270ce52 | 2148 | f->sym->ts.u.cl = gfc_new_charlen (f->sym->ns, f->sym->ts.u.cl); |
6be7c32c | 2149 | } |
eeebe20b | 2150 | f->sym->ts.u.cl->passed_length = length; |
4ee9c684 | 2151 | |
d4163395 | 2152 | /* Use the passed value for assumed length variables. */ |
eeebe20b | 2153 | if (!f->sym->ts.u.cl->length) |
4ee9c684 | 2154 | { |
d4163395 | 2155 | TREE_USED (length) = 1; |
eeebe20b | 2156 | gcc_assert (!f->sym->ts.u.cl->backend_decl); |
2157 | f->sym->ts.u.cl->backend_decl = length; | |
d4163395 | 2158 | } |
2159 | ||
2160 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2161 | ||
eeebe20b | 2162 | if (f->sym->ts.u.cl->backend_decl == NULL |
2163 | || f->sym->ts.u.cl->backend_decl == length) | |
d4163395 | 2164 | { |
eeebe20b | 2165 | if (f->sym->ts.u.cl->backend_decl == NULL) |
d4163395 | 2166 | gfc_create_string_length (f->sym); |
2167 | ||
2168 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ | |
2169 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
2170 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2171 | else | |
2172 | type = gfc_sym_type (f->sym); | |
4ee9c684 | 2173 | } |
4ee9c684 | 2174 | } |
532c2d79 | 2175 | /* For noncharacter scalar intrinsic types, VALUE passes the value, |
1cdfcee9 | 2176 | hence, the optional status cannot be transferred via a NULL pointer. |
532c2d79 | 2177 | Thus, we will use a hidden argument in that case. */ |
2178 | else if (f->sym->attr.optional && f->sym->attr.value | |
68cc384e | 2179 | && !f->sym->attr.dimension && f->sym->ts.type != BT_CLASS |
532c2d79 | 2180 | && f->sym->ts.type != BT_DERIVED) |
2181 | { | |
2182 | tree tmp; | |
2183 | strcpy (&name[1], f->sym->name); | |
2184 | name[0] = '_'; | |
2185 | tmp = build_decl (input_location, | |
2186 | PARM_DECL, get_identifier (name), | |
2187 | boolean_type_node); | |
2188 | ||
2189 | hidden_arglist = chainon (hidden_arglist, tmp); | |
2190 | DECL_CONTEXT (tmp) = fndecl; | |
2191 | DECL_ARTIFICIAL (tmp) = 1; | |
2192 | DECL_ARG_TYPE (tmp) = boolean_type_node; | |
2193 | TREE_READONLY (tmp) = 1; | |
2194 | gfc_finish_decl (tmp); | |
2195 | } | |
4ee9c684 | 2196 | |
d4163395 | 2197 | /* For non-constant length array arguments, make sure they use |
2198 | a different type node from TYPE_ARG_TYPES type. */ | |
2199 | if (f->sym->attr.dimension | |
2200 | && type == TREE_VALUE (typelist) | |
2201 | && TREE_CODE (type) == POINTER_TYPE | |
2202 | && GFC_ARRAY_TYPE_P (type) | |
2203 | && f->sym->as->type != AS_ASSUMED_SIZE | |
2204 | && ! COMPLETE_TYPE_P (TREE_TYPE (type))) | |
2205 | { | |
2206 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
2207 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2208 | else | |
2209 | type = gfc_sym_type (f->sym); | |
2210 | } | |
2211 | ||
cad0ddcf | 2212 | if (f->sym->attr.proc_pointer) |
2213 | type = build_pointer_type (type); | |
2214 | ||
2364aa60 | 2215 | if (f->sym->attr.volatile_) |
2216 | type = build_qualified_type (type, TYPE_QUAL_VOLATILE); | |
2217 | ||
69b1505f | 2218 | /* Build the argument declaration. */ |
e60a6f7b | 2219 | parm = build_decl (input_location, |
2220 | PARM_DECL, gfc_sym_identifier (f->sym), type); | |
d4163395 | 2221 | |
2364aa60 | 2222 | if (f->sym->attr.volatile_) |
2223 | { | |
2224 | TREE_THIS_VOLATILE (parm) = 1; | |
2225 | TREE_SIDE_EFFECTS (parm) = 1; | |
2226 | } | |
2227 | ||
d4163395 | 2228 | /* Fill in arg stuff. */ |
2229 | DECL_CONTEXT (parm) = fndecl; | |
2230 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2231 | /* All implementation args are read-only. */ | |
2232 | TREE_READONLY (parm) = 1; | |
98923a84 | 2233 | if (POINTER_TYPE_P (type) |
2234 | && (!f->sym->attr.proc_pointer | |
2235 | && f->sym->attr.flavor != FL_PROCEDURE)) | |
2236 | DECL_BY_REFERENCE (parm) = 1; | |
d4163395 | 2237 | |
b9c7fce7 | 2238 | gfc_finish_decl (parm); |
d4163395 | 2239 | |
2240 | f->sym->backend_decl = parm; | |
2241 | ||
7dce33fe | 2242 | /* Coarrays which are descriptorless or assumed-shape pass with |
2243 | -fcoarray=lib the token and the offset as hidden arguments. */ | |
d44f2f7c | 2244 | if (gfc_option.coarray == GFC_FCOARRAY_LIB |
2245 | && ((f->sym->ts.type != BT_CLASS && f->sym->attr.codimension | |
2246 | && !f->sym->attr.allocatable) | |
2247 | || (f->sym->ts.type == BT_CLASS | |
2248 | && CLASS_DATA (f->sym)->attr.codimension | |
2249 | && !CLASS_DATA (f->sym)->attr.allocatable))) | |
85c94a64 | 2250 | { |
2251 | tree caf_type; | |
2252 | tree token; | |
2253 | tree offset; | |
2254 | ||
2255 | gcc_assert (f->sym->backend_decl != NULL_TREE | |
2256 | && !sym->attr.is_bind_c); | |
d44f2f7c | 2257 | caf_type = f->sym->ts.type == BT_CLASS |
2258 | ? TREE_TYPE (CLASS_DATA (f->sym)->backend_decl) | |
2259 | : TREE_TYPE (f->sym->backend_decl); | |
85c94a64 | 2260 | |
85c94a64 | 2261 | token = build_decl (input_location, PARM_DECL, |
2262 | create_tmp_var_name ("caf_token"), | |
2263 | build_qualified_type (pvoid_type_node, | |
2264 | TYPE_QUAL_RESTRICT)); | |
d44f2f7c | 2265 | if ((f->sym->ts.type != BT_CLASS |
2266 | && f->sym->as->type != AS_DEFERRED) | |
2267 | || (f->sym->ts.type == BT_CLASS | |
2268 | && CLASS_DATA (f->sym)->as->type != AS_DEFERRED)) | |
7dce33fe | 2269 | { |
2270 | gcc_assert (DECL_LANG_SPECIFIC (f->sym->backend_decl) == NULL | |
2271 | || GFC_DECL_TOKEN (f->sym->backend_decl) == NULL_TREE); | |
2272 | if (DECL_LANG_SPECIFIC (f->sym->backend_decl) == NULL) | |
2273 | gfc_allocate_lang_decl (f->sym->backend_decl); | |
2274 | GFC_DECL_TOKEN (f->sym->backend_decl) = token; | |
2275 | } | |
2276 | else | |
2277 | { | |
2278 | gcc_assert (GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) == NULL_TREE); | |
2279 | GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) = token; | |
2280 | } | |
a90fe829 | 2281 | |
85c94a64 | 2282 | DECL_CONTEXT (token) = fndecl; |
2283 | DECL_ARTIFICIAL (token) = 1; | |
2284 | DECL_ARG_TYPE (token) = TREE_VALUE (typelist); | |
2285 | TREE_READONLY (token) = 1; | |
2286 | hidden_arglist = chainon (hidden_arglist, token); | |
2287 | gfc_finish_decl (token); | |
2288 | ||
85c94a64 | 2289 | offset = build_decl (input_location, PARM_DECL, |
2290 | create_tmp_var_name ("caf_offset"), | |
2291 | gfc_array_index_type); | |
2292 | ||
d44f2f7c | 2293 | if ((f->sym->ts.type != BT_CLASS |
2294 | && f->sym->as->type != AS_DEFERRED) | |
2295 | || (f->sym->ts.type == BT_CLASS | |
2296 | && CLASS_DATA (f->sym)->as->type != AS_DEFERRED)) | |
7dce33fe | 2297 | { |
2298 | gcc_assert (GFC_DECL_CAF_OFFSET (f->sym->backend_decl) | |
2299 | == NULL_TREE); | |
2300 | GFC_DECL_CAF_OFFSET (f->sym->backend_decl) = offset; | |
2301 | } | |
2302 | else | |
2303 | { | |
2304 | gcc_assert (GFC_TYPE_ARRAY_CAF_OFFSET (caf_type) == NULL_TREE); | |
2305 | GFC_TYPE_ARRAY_CAF_OFFSET (caf_type) = offset; | |
2306 | } | |
85c94a64 | 2307 | DECL_CONTEXT (offset) = fndecl; |
2308 | DECL_ARTIFICIAL (offset) = 1; | |
2309 | DECL_ARG_TYPE (offset) = TREE_VALUE (typelist); | |
2310 | TREE_READONLY (offset) = 1; | |
2311 | hidden_arglist = chainon (hidden_arglist, offset); | |
2312 | gfc_finish_decl (offset); | |
2313 | } | |
2314 | ||
d4163395 | 2315 | arglist = chainon (arglist, parm); |
e4b2c26c | 2316 | typelist = TREE_CHAIN (typelist); |
4ee9c684 | 2317 | } |
e4b2c26c | 2318 | |
465e4a95 | 2319 | /* Add the hidden string length parameters, unless the procedure |
2320 | is bind(C). */ | |
2321 | if (!sym->attr.is_bind_c) | |
2322 | arglist = chainon (arglist, hidden_arglist); | |
d4163395 | 2323 | |
ebe27ea2 | 2324 | gcc_assert (hidden_typelist == NULL_TREE |
2325 | || TREE_VALUE (hidden_typelist) == void_type_node); | |
e4b2c26c | 2326 | DECL_ARGUMENTS (fndecl) = arglist; |
1b716045 | 2327 | } |
e4b2c26c | 2328 | |
1b716045 | 2329 | /* Do the setup necessary before generating the body of a function. */ |
2330 | ||
2331 | static void | |
2332 | trans_function_start (gfc_symbol * sym) | |
2333 | { | |
2334 | tree fndecl; | |
2335 | ||
2336 | fndecl = sym->backend_decl; | |
2337 | ||
f888a3fb | 2338 | /* Let GCC know the current scope is this function. */ |
1b716045 | 2339 | current_function_decl = fndecl; |
2340 | ||
f888a3fb | 2341 | /* Let the world know what we're about to do. */ |
1b716045 | 2342 | announce_function (fndecl); |
2343 | ||
16a40513 | 2344 | if (DECL_FILE_SCOPE_P (fndecl)) |
1b716045 | 2345 | { |
f888a3fb | 2346 | /* Create RTL for function declaration. */ |
1b716045 | 2347 | rest_of_decl_compilation (fndecl, 1, 0); |
2348 | } | |
2349 | ||
f888a3fb | 2350 | /* Create RTL for function definition. */ |
1b716045 | 2351 | make_decl_rtl (fndecl); |
2352 | ||
00cf115c | 2353 | allocate_struct_function (fndecl, false); |
1b716045 | 2354 | |
f888a3fb | 2355 | /* function.c requires a push at the start of the function. */ |
cde2be84 | 2356 | pushlevel (); |
1b716045 | 2357 | } |
2358 | ||
2359 | /* Create thunks for alternate entry points. */ | |
2360 | ||
2361 | static void | |
d896f9b3 | 2362 | build_entry_thunks (gfc_namespace * ns, bool global) |
1b716045 | 2363 | { |
2364 | gfc_formal_arglist *formal; | |
2365 | gfc_formal_arglist *thunk_formal; | |
2366 | gfc_entry_list *el; | |
2367 | gfc_symbol *thunk_sym; | |
2368 | stmtblock_t body; | |
2369 | tree thunk_fndecl; | |
1b716045 | 2370 | tree tmp; |
b31f705b | 2371 | locus old_loc; |
1b716045 | 2372 | |
2373 | /* This should always be a toplevel function. */ | |
22d678e8 | 2374 | gcc_assert (current_function_decl == NULL_TREE); |
1b716045 | 2375 | |
4671339c | 2376 | gfc_save_backend_locus (&old_loc); |
1b716045 | 2377 | for (el = ns->entries; el; el = el->next) |
2378 | { | |
f1f41a6c | 2379 | vec<tree, va_gc> *args = NULL; |
2380 | vec<tree, va_gc> *string_args = NULL; | |
414c3a2c | 2381 | |
1b716045 | 2382 | thunk_sym = el->sym; |
a90fe829 | 2383 | |
d896f9b3 | 2384 | build_function_decl (thunk_sym, global); |
1b716045 | 2385 | create_function_arglist (thunk_sym); |
2386 | ||
2387 | trans_function_start (thunk_sym); | |
2388 | ||
2389 | thunk_fndecl = thunk_sym->backend_decl; | |
2390 | ||
e5004242 | 2391 | gfc_init_block (&body); |
1b716045 | 2392 | |
f888a3fb | 2393 | /* Pass extra parameter identifying this entry point. */ |
7016c612 | 2394 | tmp = build_int_cst (gfc_array_index_type, el->id); |
f1f41a6c | 2395 | vec_safe_push (args, tmp); |
1b716045 | 2396 | |
c6871095 | 2397 | if (thunk_sym->attr.function) |
2398 | { | |
2399 | if (gfc_return_by_reference (ns->proc_name)) | |
2400 | { | |
2401 | tree ref = DECL_ARGUMENTS (current_function_decl); | |
f1f41a6c | 2402 | vec_safe_push (args, ref); |
c6871095 | 2403 | if (ns->proc_name->ts.type == BT_CHARACTER) |
f1f41a6c | 2404 | vec_safe_push (args, DECL_CHAIN (ref)); |
c6871095 | 2405 | } |
2406 | } | |
2407 | ||
6777213b | 2408 | for (formal = gfc_sym_get_dummy_args (ns->proc_name); formal; |
2409 | formal = formal->next) | |
1b716045 | 2410 | { |
c6871095 | 2411 | /* Ignore alternate returns. */ |
2412 | if (formal->sym == NULL) | |
2413 | continue; | |
2414 | ||
1b716045 | 2415 | /* We don't have a clever way of identifying arguments, so resort to |
2416 | a brute-force search. */ | |
6777213b | 2417 | for (thunk_formal = gfc_sym_get_dummy_args (thunk_sym); |
1b716045 | 2418 | thunk_formal; |
2419 | thunk_formal = thunk_formal->next) | |
2420 | { | |
2421 | if (thunk_formal->sym == formal->sym) | |
2422 | break; | |
2423 | } | |
2424 | ||
2425 | if (thunk_formal) | |
2426 | { | |
2427 | /* Pass the argument. */ | |
d95efb59 | 2428 | DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1; |
f1f41a6c | 2429 | vec_safe_push (args, thunk_formal->sym->backend_decl); |
1b716045 | 2430 | if (formal->sym->ts.type == BT_CHARACTER) |
2431 | { | |
eeebe20b | 2432 | tmp = thunk_formal->sym->ts.u.cl->backend_decl; |
f1f41a6c | 2433 | vec_safe_push (string_args, tmp); |
1b716045 | 2434 | } |
2435 | } | |
2436 | else | |
2437 | { | |
2438 | /* Pass NULL for a missing argument. */ | |
f1f41a6c | 2439 | vec_safe_push (args, null_pointer_node); |
1b716045 | 2440 | if (formal->sym->ts.type == BT_CHARACTER) |
2441 | { | |
7d3075f6 | 2442 | tmp = build_int_cst (gfc_charlen_type_node, 0); |
f1f41a6c | 2443 | vec_safe_push (string_args, tmp); |
1b716045 | 2444 | } |
2445 | } | |
2446 | } | |
2447 | ||
2448 | /* Call the master function. */ | |
f1f41a6c | 2449 | vec_safe_splice (args, string_args); |
1b716045 | 2450 | tmp = ns->proc_name->backend_decl; |
414c3a2c | 2451 | tmp = build_call_expr_loc_vec (input_location, tmp, args); |
c6871095 | 2452 | if (ns->proc_name->attr.mixed_entry_master) |
2453 | { | |
2454 | tree union_decl, field; | |
2455 | tree master_type = TREE_TYPE (ns->proc_name->backend_decl); | |
2456 | ||
e60a6f7b | 2457 | union_decl = build_decl (input_location, |
2458 | VAR_DECL, get_identifier ("__result"), | |
c6871095 | 2459 | TREE_TYPE (master_type)); |
2460 | DECL_ARTIFICIAL (union_decl) = 1; | |
2461 | DECL_EXTERNAL (union_decl) = 0; | |
2462 | TREE_PUBLIC (union_decl) = 0; | |
2463 | TREE_USED (union_decl) = 1; | |
2464 | layout_decl (union_decl, 0); | |
2465 | pushdecl (union_decl); | |
2466 | ||
2467 | DECL_CONTEXT (union_decl) = current_function_decl; | |
fd779e1d | 2468 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
2469 | TREE_TYPE (union_decl), union_decl, tmp); | |
c6871095 | 2470 | gfc_add_expr_to_block (&body, tmp); |
2471 | ||
2472 | for (field = TYPE_FIELDS (TREE_TYPE (union_decl)); | |
1767a056 | 2473 | field; field = DECL_CHAIN (field)) |
c6871095 | 2474 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2475 | thunk_sym->result->name) == 0) | |
2476 | break; | |
2477 | gcc_assert (field != NULL_TREE); | |
fd779e1d | 2478 | tmp = fold_build3_loc (input_location, COMPONENT_REF, |
2479 | TREE_TYPE (field), union_decl, field, | |
2480 | NULL_TREE); | |
a90fe829 | 2481 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
f75d6b8a | 2482 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2483 | DECL_RESULT (current_function_decl), tmp); | |
c6871095 | 2484 | tmp = build1_v (RETURN_EXPR, tmp); |
2485 | } | |
2486 | else if (TREE_TYPE (DECL_RESULT (current_function_decl)) | |
2487 | != void_type_node) | |
2488 | { | |
fd779e1d | 2489 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
f75d6b8a | 2490 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2491 | DECL_RESULT (current_function_decl), tmp); | |
c6871095 | 2492 | tmp = build1_v (RETURN_EXPR, tmp); |
2493 | } | |
1b716045 | 2494 | gfc_add_expr_to_block (&body, tmp); |
2495 | ||
2496 | /* Finish off this function and send it for code generation. */ | |
2497 | DECL_SAVED_TREE (thunk_fndecl) = gfc_finish_block (&body); | |
e5004242 | 2498 | tmp = getdecls (); |
cde2be84 | 2499 | poplevel (1, 1); |
1b716045 | 2500 | BLOCK_SUPERCONTEXT (DECL_INITIAL (thunk_fndecl)) = thunk_fndecl; |
e5004242 | 2501 | DECL_SAVED_TREE (thunk_fndecl) |
2502 | = build3_v (BIND_EXPR, tmp, DECL_SAVED_TREE (thunk_fndecl), | |
2503 | DECL_INITIAL (thunk_fndecl)); | |
1b716045 | 2504 | |
2505 | /* Output the GENERIC tree. */ | |
2506 | dump_function (TDI_original, thunk_fndecl); | |
2507 | ||
2508 | /* Store the end of the function, so that we get good line number | |
2509 | info for the epilogue. */ | |
2510 | cfun->function_end_locus = input_location; | |
2511 | ||
2512 | /* We're leaving the context of this function, so zap cfun. | |
2513 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
2514 | tree_rest_of_compilation. */ | |
87d4aa85 | 2515 | set_cfun (NULL); |
1b716045 | 2516 | |
2517 | current_function_decl = NULL_TREE; | |
2518 | ||
bb982f66 | 2519 | cgraph_finalize_function (thunk_fndecl, true); |
1b716045 | 2520 | |
2521 | /* We share the symbols in the formal argument list with other entry | |
2522 | points and the master function. Clear them so that they are | |
2523 | recreated for each function. */ | |
6777213b | 2524 | for (formal = gfc_sym_get_dummy_args (thunk_sym); formal; |
2525 | formal = formal->next) | |
c6871095 | 2526 | if (formal->sym != NULL) /* Ignore alternate returns. */ |
2527 | { | |
2528 | formal->sym->backend_decl = NULL_TREE; | |
2529 | if (formal->sym->ts.type == BT_CHARACTER) | |
eeebe20b | 2530 | formal->sym->ts.u.cl->backend_decl = NULL_TREE; |
c6871095 | 2531 | } |
2532 | ||
2533 | if (thunk_sym->attr.function) | |
1b716045 | 2534 | { |
c6871095 | 2535 | if (thunk_sym->ts.type == BT_CHARACTER) |
eeebe20b | 2536 | thunk_sym->ts.u.cl->backend_decl = NULL_TREE; |
c6871095 | 2537 | if (thunk_sym->result->ts.type == BT_CHARACTER) |
eeebe20b | 2538 | thunk_sym->result->ts.u.cl->backend_decl = NULL_TREE; |
1b716045 | 2539 | } |
2540 | } | |
b31f705b | 2541 | |
4671339c | 2542 | gfc_restore_backend_locus (&old_loc); |
1b716045 | 2543 | } |
2544 | ||
2545 | ||
2546 | /* Create a decl for a function, and create any thunks for alternate entry | |
d896f9b3 | 2547 | points. If global is true, generate the function in the global binding |
2548 | level, otherwise in the current binding level (which can be global). */ | |
1b716045 | 2549 | |
2550 | void | |
d896f9b3 | 2551 | gfc_create_function_decl (gfc_namespace * ns, bool global) |
1b716045 | 2552 | { |
2553 | /* Create a declaration for the master function. */ | |
d896f9b3 | 2554 | build_function_decl (ns->proc_name, global); |
1b716045 | 2555 | |
f888a3fb | 2556 | /* Compile the entry thunks. */ |
1b716045 | 2557 | if (ns->entries) |
d896f9b3 | 2558 | build_entry_thunks (ns, global); |
1b716045 | 2559 | |
2560 | /* Now create the read argument list. */ | |
2561 | create_function_arglist (ns->proc_name); | |
15b28553 | 2562 | |
2563 | if (ns->omp_declare_simd) | |
2564 | gfc_trans_omp_declare_simd (ns); | |
1b716045 | 2565 | } |
2566 | ||
c750cc52 | 2567 | /* Return the decl used to hold the function return value. If |
3350e716 | 2568 | parent_flag is set, the context is the parent_scope. */ |
4ee9c684 | 2569 | |
2570 | tree | |
c750cc52 | 2571 | gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag) |
4ee9c684 | 2572 | { |
c750cc52 | 2573 | tree decl; |
2574 | tree length; | |
2575 | tree this_fake_result_decl; | |
2576 | tree this_function_decl; | |
4ee9c684 | 2577 | |
2578 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
2579 | ||
c750cc52 | 2580 | if (parent_flag) |
2581 | { | |
2582 | this_fake_result_decl = parent_fake_result_decl; | |
2583 | this_function_decl = DECL_CONTEXT (current_function_decl); | |
2584 | } | |
2585 | else | |
2586 | { | |
2587 | this_fake_result_decl = current_fake_result_decl; | |
2588 | this_function_decl = current_function_decl; | |
2589 | } | |
2590 | ||
c6871095 | 2591 | if (sym |
c750cc52 | 2592 | && sym->ns->proc_name->backend_decl == this_function_decl |
d4163395 | 2593 | && sym->ns->proc_name->attr.entry_master |
c6871095 | 2594 | && sym != sym->ns->proc_name) |
2595 | { | |
d4163395 | 2596 | tree t = NULL, var; |
c750cc52 | 2597 | if (this_fake_result_decl != NULL) |
2598 | for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t)) | |
d4163395 | 2599 | if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0) |
2600 | break; | |
2601 | if (t) | |
2602 | return TREE_VALUE (t); | |
c750cc52 | 2603 | decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag); |
2604 | ||
2605 | if (parent_flag) | |
2606 | this_fake_result_decl = parent_fake_result_decl; | |
2607 | else | |
2608 | this_fake_result_decl = current_fake_result_decl; | |
2609 | ||
d4163395 | 2610 | if (decl && sym->ns->proc_name->attr.mixed_entry_master) |
c6871095 | 2611 | { |
2612 | tree field; | |
2613 | ||
2614 | for (field = TYPE_FIELDS (TREE_TYPE (decl)); | |
1767a056 | 2615 | field; field = DECL_CHAIN (field)) |
c6871095 | 2616 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2617 | sym->name) == 0) | |
2618 | break; | |
2619 | ||
2620 | gcc_assert (field != NULL_TREE); | |
fd779e1d | 2621 | decl = fold_build3_loc (input_location, COMPONENT_REF, |
2622 | TREE_TYPE (field), decl, field, NULL_TREE); | |
c6871095 | 2623 | } |
c750cc52 | 2624 | |
2625 | var = create_tmp_var_raw (TREE_TYPE (decl), sym->name); | |
2626 | if (parent_flag) | |
2627 | gfc_add_decl_to_parent_function (var); | |
2628 | else | |
2629 | gfc_add_decl_to_function (var); | |
2630 | ||
d4163395 | 2631 | SET_DECL_VALUE_EXPR (var, decl); |
2632 | DECL_HAS_VALUE_EXPR_P (var) = 1; | |
2cf330c4 | 2633 | GFC_DECL_RESULT (var) = 1; |
c750cc52 | 2634 | |
2635 | TREE_CHAIN (this_fake_result_decl) | |
2636 | = tree_cons (get_identifier (sym->name), var, | |
2637 | TREE_CHAIN (this_fake_result_decl)); | |
d4163395 | 2638 | return var; |
c6871095 | 2639 | } |
2640 | ||
c750cc52 | 2641 | if (this_fake_result_decl != NULL_TREE) |
2642 | return TREE_VALUE (this_fake_result_decl); | |
4ee9c684 | 2643 | |
2644 | /* Only when gfc_get_fake_result_decl is called by gfc_trans_return, | |
2645 | sym is NULL. */ | |
2646 | if (!sym) | |
2647 | return NULL_TREE; | |
2648 | ||
d4163395 | 2649 | if (sym->ts.type == BT_CHARACTER) |
4ee9c684 | 2650 | { |
eeebe20b | 2651 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
d4163395 | 2652 | length = gfc_create_string_length (sym); |
2653 | else | |
eeebe20b | 2654 | length = sym->ts.u.cl->backend_decl; |
d4163395 | 2655 | if (TREE_CODE (length) == VAR_DECL |
2656 | && DECL_CONTEXT (length) == NULL_TREE) | |
99042714 | 2657 | gfc_add_decl_to_function (length); |
4ee9c684 | 2658 | } |
2659 | ||
2660 | if (gfc_return_by_reference (sym)) | |
2661 | { | |
c750cc52 | 2662 | decl = DECL_ARGUMENTS (this_function_decl); |
c6871095 | 2663 | |
c750cc52 | 2664 | if (sym->ns->proc_name->backend_decl == this_function_decl |
c6871095 | 2665 | && sym->ns->proc_name->attr.entry_master) |
1767a056 | 2666 | decl = DECL_CHAIN (decl); |
4ee9c684 | 2667 | |
2668 | TREE_USED (decl) = 1; | |
2669 | if (sym->as) | |
2670 | decl = gfc_build_dummy_array_decl (sym, decl); | |
2671 | } | |
2672 | else | |
2673 | { | |
2674 | sprintf (name, "__result_%.20s", | |
c750cc52 | 2675 | IDENTIFIER_POINTER (DECL_NAME (this_function_decl))); |
4ee9c684 | 2676 | |
3350e716 | 2677 | if (!sym->attr.mixed_entry_master && sym->attr.function) |
1e71b314 | 2678 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
e60a6f7b | 2679 | VAR_DECL, get_identifier (name), |
3350e716 | 2680 | gfc_sym_type (sym)); |
2681 | else | |
1e71b314 | 2682 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
e60a6f7b | 2683 | VAR_DECL, get_identifier (name), |
3350e716 | 2684 | TREE_TYPE (TREE_TYPE (this_function_decl))); |
4ee9c684 | 2685 | DECL_ARTIFICIAL (decl) = 1; |
2686 | DECL_EXTERNAL (decl) = 0; | |
2687 | TREE_PUBLIC (decl) = 0; | |
2688 | TREE_USED (decl) = 1; | |
764f1175 | 2689 | GFC_DECL_RESULT (decl) = 1; |
a379e3a9 | 2690 | TREE_ADDRESSABLE (decl) = 1; |
4ee9c684 | 2691 | |
2692 | layout_decl (decl, 0); | |
2693 | ||
c750cc52 | 2694 | if (parent_flag) |
2695 | gfc_add_decl_to_parent_function (decl); | |
2696 | else | |
2697 | gfc_add_decl_to_function (decl); | |
4ee9c684 | 2698 | } |
2699 | ||
c750cc52 | 2700 | if (parent_flag) |
2701 | parent_fake_result_decl = build_tree_list (NULL, decl); | |
2702 | else | |
2703 | current_fake_result_decl = build_tree_list (NULL, decl); | |
4ee9c684 | 2704 | |
2705 | return decl; | |
2706 | } | |
2707 | ||
2708 | ||
2709 | /* Builds a function decl. The remaining parameters are the types of the | |
2710 | function arguments. Negative nargs indicates a varargs function. */ | |
2711 | ||
8ce86007 | 2712 | static tree |
2713 | build_library_function_decl_1 (tree name, const char *spec, | |
2714 | tree rettype, int nargs, va_list p) | |
4ee9c684 | 2715 | { |
f1f41a6c | 2716 | vec<tree, va_gc> *arglist; |
4ee9c684 | 2717 | tree fntype; |
2718 | tree fndecl; | |
4ee9c684 | 2719 | int n; |
2720 | ||
2721 | /* Library functions must be declared with global scope. */ | |
22d678e8 | 2722 | gcc_assert (current_function_decl == NULL_TREE); |
4ee9c684 | 2723 | |
4ee9c684 | 2724 | /* Create a list of the argument types. */ |
f1f41a6c | 2725 | vec_alloc (arglist, abs (nargs)); |
5edc3af9 | 2726 | for (n = abs (nargs); n > 0; n--) |
4ee9c684 | 2727 | { |
5edc3af9 | 2728 | tree argtype = va_arg (p, tree); |
f1f41a6c | 2729 | arglist->quick_push (argtype); |
4ee9c684 | 2730 | } |
2731 | ||
2732 | /* Build the function type and decl. */ | |
5edc3af9 | 2733 | if (nargs >= 0) |
2734 | fntype = build_function_type_vec (rettype, arglist); | |
2735 | else | |
2736 | fntype = build_varargs_function_type_vec (rettype, arglist); | |
8ce86007 | 2737 | if (spec) |
2738 | { | |
2739 | tree attr_args = build_tree_list (NULL_TREE, | |
2740 | build_string (strlen (spec), spec)); | |
2741 | tree attrs = tree_cons (get_identifier ("fn spec"), | |
2742 | attr_args, TYPE_ATTRIBUTES (fntype)); | |
2743 | fntype = build_type_attribute_variant (fntype, attrs); | |
2744 | } | |
e60a6f7b | 2745 | fndecl = build_decl (input_location, |
2746 | FUNCTION_DECL, name, fntype); | |
4ee9c684 | 2747 | |
2748 | /* Mark this decl as external. */ | |
2749 | DECL_EXTERNAL (fndecl) = 1; | |
2750 | TREE_PUBLIC (fndecl) = 1; | |
2751 | ||
4ee9c684 | 2752 | pushdecl (fndecl); |
2753 | ||
b2c4af5e | 2754 | rest_of_decl_compilation (fndecl, 1, 0); |
4ee9c684 | 2755 | |
2756 | return fndecl; | |
2757 | } | |
2758 | ||
8ce86007 | 2759 | /* Builds a function decl. The remaining parameters are the types of the |
2760 | function arguments. Negative nargs indicates a varargs function. */ | |
2761 | ||
2762 | tree | |
2763 | gfc_build_library_function_decl (tree name, tree rettype, int nargs, ...) | |
2764 | { | |
2765 | tree ret; | |
2766 | va_list args; | |
2767 | va_start (args, nargs); | |
2768 | ret = build_library_function_decl_1 (name, NULL, rettype, nargs, args); | |
2769 | va_end (args); | |
2770 | return ret; | |
2771 | } | |
2772 | ||
2773 | /* Builds a function decl. The remaining parameters are the types of the | |
2774 | function arguments. Negative nargs indicates a varargs function. | |
2775 | The SPEC parameter specifies the function argument and return type | |
2776 | specification according to the fnspec function type attribute. */ | |
2777 | ||
4bf69bc3 | 2778 | tree |
8ce86007 | 2779 | gfc_build_library_function_decl_with_spec (tree name, const char *spec, |
2780 | tree rettype, int nargs, ...) | |
2781 | { | |
2782 | tree ret; | |
2783 | va_list args; | |
2784 | va_start (args, nargs); | |
2785 | ret = build_library_function_decl_1 (name, spec, rettype, nargs, args); | |
2786 | va_end (args); | |
2787 | return ret; | |
2788 | } | |
2789 | ||
4ee9c684 | 2790 | static void |
2791 | gfc_build_intrinsic_function_decls (void) | |
2792 | { | |
90ba9145 | 2793 | tree gfc_int4_type_node = gfc_get_int_type (4); |
2794 | tree gfc_int8_type_node = gfc_get_int_type (8); | |
920e54ef | 2795 | tree gfc_int16_type_node = gfc_get_int_type (16); |
90ba9145 | 2796 | tree gfc_logical4_type_node = gfc_get_logical_type (4); |
40b806de | 2797 | tree pchar1_type_node = gfc_get_pchar_type (1); |
2798 | tree pchar4_type_node = gfc_get_pchar_type (4); | |
90ba9145 | 2799 | |
4ee9c684 | 2800 | /* String functions. */ |
241ecdc7 | 2801 | gfor_fndecl_compare_string = gfc_build_library_function_decl_with_spec ( |
2802 | get_identifier (PREFIX("compare_string")), "..R.R", | |
2803 | integer_type_node, 4, gfc_charlen_type_node, pchar1_type_node, | |
2804 | gfc_charlen_type_node, pchar1_type_node); | |
537824d1 | 2805 | DECL_PURE_P (gfor_fndecl_compare_string) = 1; |
bc351485 | 2806 | TREE_NOTHROW (gfor_fndecl_compare_string) = 1; |
241ecdc7 | 2807 | |
2808 | gfor_fndecl_concat_string = gfc_build_library_function_decl_with_spec ( | |
2809 | get_identifier (PREFIX("concat_string")), "..W.R.R", | |
2810 | void_type_node, 6, gfc_charlen_type_node, pchar1_type_node, | |
2811 | gfc_charlen_type_node, pchar1_type_node, | |
2812 | gfc_charlen_type_node, pchar1_type_node); | |
bc351485 | 2813 | TREE_NOTHROW (gfor_fndecl_concat_string) = 1; |
241ecdc7 | 2814 | |
2815 | gfor_fndecl_string_len_trim = gfc_build_library_function_decl_with_spec ( | |
2816 | get_identifier (PREFIX("string_len_trim")), "..R", | |
2817 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar1_type_node); | |
537824d1 | 2818 | DECL_PURE_P (gfor_fndecl_string_len_trim) = 1; |
bc351485 | 2819 | TREE_NOTHROW (gfor_fndecl_string_len_trim) = 1; |
241ecdc7 | 2820 | |
2821 | gfor_fndecl_string_index = gfc_build_library_function_decl_with_spec ( | |
2822 | get_identifier (PREFIX("string_index")), "..R.R.", | |
2823 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2824 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2825 | DECL_PURE_P (gfor_fndecl_string_index) = 1; |
bc351485 | 2826 | TREE_NOTHROW (gfor_fndecl_string_index) = 1; |
241ecdc7 | 2827 | |
2828 | gfor_fndecl_string_scan = gfc_build_library_function_decl_with_spec ( | |
2829 | get_identifier (PREFIX("string_scan")), "..R.R.", | |
2830 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2831 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2832 | DECL_PURE_P (gfor_fndecl_string_scan) = 1; |
bc351485 | 2833 | TREE_NOTHROW (gfor_fndecl_string_scan) = 1; |
241ecdc7 | 2834 | |
2835 | gfor_fndecl_string_verify = gfc_build_library_function_decl_with_spec ( | |
2836 | get_identifier (PREFIX("string_verify")), "..R.R.", | |
2837 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2838 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2839 | DECL_PURE_P (gfor_fndecl_string_verify) = 1; |
bc351485 | 2840 | TREE_NOTHROW (gfor_fndecl_string_verify) = 1; |
241ecdc7 | 2841 | |
2842 | gfor_fndecl_string_trim = gfc_build_library_function_decl_with_spec ( | |
2843 | get_identifier (PREFIX("string_trim")), ".Ww.R", | |
2844 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2845 | build_pointer_type (pchar1_type_node), gfc_charlen_type_node, | |
2846 | pchar1_type_node); | |
2847 | ||
2848 | gfor_fndecl_string_minmax = gfc_build_library_function_decl_with_spec ( | |
2849 | get_identifier (PREFIX("string_minmax")), ".Ww.R", | |
2850 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2851 | build_pointer_type (pchar1_type_node), integer_type_node, | |
2852 | integer_type_node); | |
2853 | ||
2854 | gfor_fndecl_adjustl = gfc_build_library_function_decl_with_spec ( | |
2855 | get_identifier (PREFIX("adjustl")), ".W.R", | |
2856 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2857 | pchar1_type_node); | |
bc351485 | 2858 | TREE_NOTHROW (gfor_fndecl_adjustl) = 1; |
241ecdc7 | 2859 | |
2860 | gfor_fndecl_adjustr = gfc_build_library_function_decl_with_spec ( | |
2861 | get_identifier (PREFIX("adjustr")), ".W.R", | |
2862 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2863 | pchar1_type_node); | |
bc351485 | 2864 | TREE_NOTHROW (gfor_fndecl_adjustr) = 1; |
241ecdc7 | 2865 | |
2866 | gfor_fndecl_select_string = gfc_build_library_function_decl_with_spec ( | |
2867 | get_identifier (PREFIX("select_string")), ".R.R.", | |
2868 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2869 | pchar1_type_node, gfc_charlen_type_node); | |
537824d1 | 2870 | DECL_PURE_P (gfor_fndecl_select_string) = 1; |
bc351485 | 2871 | TREE_NOTHROW (gfor_fndecl_select_string) = 1; |
241ecdc7 | 2872 | |
2873 | gfor_fndecl_compare_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2874 | get_identifier (PREFIX("compare_string_char4")), "..R.R", | |
2875 | integer_type_node, 4, gfc_charlen_type_node, pchar4_type_node, | |
2876 | gfc_charlen_type_node, pchar4_type_node); | |
537824d1 | 2877 | DECL_PURE_P (gfor_fndecl_compare_string_char4) = 1; |
bc351485 | 2878 | TREE_NOTHROW (gfor_fndecl_compare_string_char4) = 1; |
241ecdc7 | 2879 | |
2880 | gfor_fndecl_concat_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2881 | get_identifier (PREFIX("concat_string_char4")), "..W.R.R", | |
2882 | void_type_node, 6, gfc_charlen_type_node, pchar4_type_node, | |
2883 | gfc_charlen_type_node, pchar4_type_node, gfc_charlen_type_node, | |
2884 | pchar4_type_node); | |
bc351485 | 2885 | TREE_NOTHROW (gfor_fndecl_concat_string_char4) = 1; |
241ecdc7 | 2886 | |
2887 | gfor_fndecl_string_len_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2888 | get_identifier (PREFIX("string_len_trim_char4")), "..R", | |
2889 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar4_type_node); | |
537824d1 | 2890 | DECL_PURE_P (gfor_fndecl_string_len_trim_char4) = 1; |
bc351485 | 2891 | TREE_NOTHROW (gfor_fndecl_string_len_trim_char4) = 1; |
241ecdc7 | 2892 | |
2893 | gfor_fndecl_string_index_char4 = gfc_build_library_function_decl_with_spec ( | |
2894 | get_identifier (PREFIX("string_index_char4")), "..R.R.", | |
2895 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2896 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2897 | DECL_PURE_P (gfor_fndecl_string_index_char4) = 1; |
bc351485 | 2898 | TREE_NOTHROW (gfor_fndecl_string_index_char4) = 1; |
241ecdc7 | 2899 | |
2900 | gfor_fndecl_string_scan_char4 = gfc_build_library_function_decl_with_spec ( | |
2901 | get_identifier (PREFIX("string_scan_char4")), "..R.R.", | |
2902 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2903 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2904 | DECL_PURE_P (gfor_fndecl_string_scan_char4) = 1; |
bc351485 | 2905 | TREE_NOTHROW (gfor_fndecl_string_scan_char4) = 1; |
241ecdc7 | 2906 | |
2907 | gfor_fndecl_string_verify_char4 = gfc_build_library_function_decl_with_spec ( | |
2908 | get_identifier (PREFIX("string_verify_char4")), "..R.R.", | |
2909 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2910 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2911 | DECL_PURE_P (gfor_fndecl_string_verify_char4) = 1; |
bc351485 | 2912 | TREE_NOTHROW (gfor_fndecl_string_verify_char4) = 1; |
241ecdc7 | 2913 | |
2914 | gfor_fndecl_string_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2915 | get_identifier (PREFIX("string_trim_char4")), ".Ww.R", | |
2916 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2917 | build_pointer_type (pchar4_type_node), gfc_charlen_type_node, | |
2918 | pchar4_type_node); | |
2919 | ||
2920 | gfor_fndecl_string_minmax_char4 = gfc_build_library_function_decl_with_spec ( | |
2921 | get_identifier (PREFIX("string_minmax_char4")), ".Ww.R", | |
2922 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2923 | build_pointer_type (pchar4_type_node), integer_type_node, | |
2924 | integer_type_node); | |
2925 | ||
2926 | gfor_fndecl_adjustl_char4 = gfc_build_library_function_decl_with_spec ( | |
2927 | get_identifier (PREFIX("adjustl_char4")), ".W.R", | |
2928 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2929 | pchar4_type_node); | |
bc351485 | 2930 | TREE_NOTHROW (gfor_fndecl_adjustl_char4) = 1; |
241ecdc7 | 2931 | |
2932 | gfor_fndecl_adjustr_char4 = gfc_build_library_function_decl_with_spec ( | |
2933 | get_identifier (PREFIX("adjustr_char4")), ".W.R", | |
2934 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2935 | pchar4_type_node); | |
bc351485 | 2936 | TREE_NOTHROW (gfor_fndecl_adjustr_char4) = 1; |
241ecdc7 | 2937 | |
2938 | gfor_fndecl_select_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2939 | get_identifier (PREFIX("select_string_char4")), ".R.R.", | |
2940 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2941 | pvoid_type_node, gfc_charlen_type_node); | |
537824d1 | 2942 | DECL_PURE_P (gfor_fndecl_select_string_char4) = 1; |
bc351485 | 2943 | TREE_NOTHROW (gfor_fndecl_select_string_char4) = 1; |
b44437b9 | 2944 | |
2945 | ||
2946 | /* Conversion between character kinds. */ | |
2947 | ||
241ecdc7 | 2948 | gfor_fndecl_convert_char1_to_char4 = gfc_build_library_function_decl_with_spec ( |
2949 | get_identifier (PREFIX("convert_char1_to_char4")), ".w.R", | |
2950 | void_type_node, 3, build_pointer_type (pchar4_type_node), | |
2951 | gfc_charlen_type_node, pchar1_type_node); | |
b44437b9 | 2952 | |
241ecdc7 | 2953 | gfor_fndecl_convert_char4_to_char1 = gfc_build_library_function_decl_with_spec ( |
2954 | get_identifier (PREFIX("convert_char4_to_char1")), ".w.R", | |
2955 | void_type_node, 3, build_pointer_type (pchar1_type_node), | |
2956 | gfc_charlen_type_node, pchar4_type_node); | |
b44437b9 | 2957 | |
40b806de | 2958 | /* Misc. functions. */ |
5fcc6ec2 | 2959 | |
241ecdc7 | 2960 | gfor_fndecl_ttynam = gfc_build_library_function_decl_with_spec ( |
2961 | get_identifier (PREFIX("ttynam")), ".W", | |
2962 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
2963 | integer_type_node); | |
2964 | ||
2965 | gfor_fndecl_fdate = gfc_build_library_function_decl_with_spec ( | |
2966 | get_identifier (PREFIX("fdate")), ".W", | |
2967 | void_type_node, 2, pchar_type_node, gfc_charlen_type_node); | |
2968 | ||
2969 | gfor_fndecl_ctime = gfc_build_library_function_decl_with_spec ( | |
2970 | get_identifier (PREFIX("ctime")), ".W", | |
2971 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
2972 | gfc_int8_type_node); | |
2973 | ||
2974 | gfor_fndecl_sc_kind = gfc_build_library_function_decl_with_spec ( | |
2975 | get_identifier (PREFIX("selected_char_kind")), "..R", | |
2976 | gfc_int4_type_node, 2, gfc_charlen_type_node, pchar_type_node); | |
537824d1 | 2977 | DECL_PURE_P (gfor_fndecl_sc_kind) = 1; |
bc351485 | 2978 | TREE_NOTHROW (gfor_fndecl_sc_kind) = 1; |
241ecdc7 | 2979 | |
2980 | gfor_fndecl_si_kind = gfc_build_library_function_decl_with_spec ( | |
2981 | get_identifier (PREFIX("selected_int_kind")), ".R", | |
2982 | gfc_int4_type_node, 1, pvoid_type_node); | |
537824d1 | 2983 | DECL_PURE_P (gfor_fndecl_si_kind) = 1; |
bc351485 | 2984 | TREE_NOTHROW (gfor_fndecl_si_kind) = 1; |
241ecdc7 | 2985 | |
2986 | gfor_fndecl_sr_kind = gfc_build_library_function_decl_with_spec ( | |
2987 | get_identifier (PREFIX("selected_real_kind2008")), ".RR", | |
2988 | gfc_int4_type_node, 3, pvoid_type_node, pvoid_type_node, | |
2989 | pvoid_type_node); | |
537824d1 | 2990 | DECL_PURE_P (gfor_fndecl_sr_kind) = 1; |
bc351485 | 2991 | TREE_NOTHROW (gfor_fndecl_sr_kind) = 1; |
4ee9c684 | 2992 | |
4ee9c684 | 2993 | /* Power functions. */ |
76834664 | 2994 | { |
920e54ef | 2995 | tree ctype, rtype, itype, jtype; |
2996 | int rkind, ikind, jkind; | |
2997 | #define NIKINDS 3 | |
2998 | #define NRKINDS 4 | |
2999 | static int ikinds[NIKINDS] = {4, 8, 16}; | |
3000 | static int rkinds[NRKINDS] = {4, 8, 10, 16}; | |
3001 | char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */ | |
3002 | ||
3003 | for (ikind=0; ikind < NIKINDS; ikind++) | |
76834664 | 3004 | { |
920e54ef | 3005 | itype = gfc_get_int_type (ikinds[ikind]); |
3006 | ||
3007 | for (jkind=0; jkind < NIKINDS; jkind++) | |
3008 | { | |
3009 | jtype = gfc_get_int_type (ikinds[jkind]); | |
3010 | if (itype && jtype) | |
3011 | { | |
3012 | sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind], | |
3013 | ikinds[jkind]); | |
3014 | gfor_fndecl_math_powi[jkind][ikind].integer = | |
3015 | gfc_build_library_function_decl (get_identifier (name), | |
3016 | jtype, 2, jtype, itype); | |
2177d98b | 3017 | TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
bc351485 | 3018 | TREE_NOTHROW (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
920e54ef | 3019 | } |
3020 | } | |
3021 | ||
3022 | for (rkind = 0; rkind < NRKINDS; rkind ++) | |
76834664 | 3023 | { |
920e54ef | 3024 | rtype = gfc_get_real_type (rkinds[rkind]); |
3025 | if (rtype && itype) | |
3026 | { | |
3027 | sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind], | |
3028 | ikinds[ikind]); | |
3029 | gfor_fndecl_math_powi[rkind][ikind].real = | |
3030 | gfc_build_library_function_decl (get_identifier (name), | |
3031 | rtype, 2, rtype, itype); | |
2177d98b | 3032 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
bc351485 | 3033 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
920e54ef | 3034 | } |
3035 | ||
3036 | ctype = gfc_get_complex_type (rkinds[rkind]); | |
3037 | if (ctype && itype) | |
3038 | { | |
3039 | sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind], | |
3040 | ikinds[ikind]); | |
3041 | gfor_fndecl_math_powi[rkind][ikind].cmplx = | |
3042 | gfc_build_library_function_decl (get_identifier (name), | |
3043 | ctype, 2,ctype, itype); | |
2177d98b | 3044 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
bc351485 | 3045 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
920e54ef | 3046 | } |
76834664 | 3047 | } |
3048 | } | |
920e54ef | 3049 | #undef NIKINDS |
3050 | #undef NRKINDS | |
76834664 | 3051 | } |
3052 | ||
241ecdc7 | 3053 | gfor_fndecl_math_ishftc4 = gfc_build_library_function_decl ( |
3054 | get_identifier (PREFIX("ishftc4")), | |
3055 | gfc_int4_type_node, 3, gfc_int4_type_node, gfc_int4_type_node, | |
3056 | gfc_int4_type_node); | |
bc351485 | 3057 | TREE_READONLY (gfor_fndecl_math_ishftc4) = 1; |
3058 | TREE_NOTHROW (gfor_fndecl_math_ishftc4) = 1; | |
a90fe829 | 3059 | |
241ecdc7 | 3060 | gfor_fndecl_math_ishftc8 = gfc_build_library_function_decl ( |
3061 | get_identifier (PREFIX("ishftc8")), | |
3062 | gfc_int8_type_node, 3, gfc_int8_type_node, gfc_int4_type_node, | |
3063 | gfc_int4_type_node); | |
bc351485 | 3064 | TREE_READONLY (gfor_fndecl_math_ishftc8) = 1; |
3065 | TREE_NOTHROW (gfor_fndecl_math_ishftc8) = 1; | |
241ecdc7 | 3066 | |
920e54ef | 3067 | if (gfc_int16_type_node) |
bc351485 | 3068 | { |
3069 | gfor_fndecl_math_ishftc16 = gfc_build_library_function_decl ( | |
241ecdc7 | 3070 | get_identifier (PREFIX("ishftc16")), |
3071 | gfc_int16_type_node, 3, gfc_int16_type_node, gfc_int4_type_node, | |
3072 | gfc_int4_type_node); | |
bc351485 | 3073 | TREE_READONLY (gfor_fndecl_math_ishftc16) = 1; |
3074 | TREE_NOTHROW (gfor_fndecl_math_ishftc16) = 1; | |
3075 | } | |
920e54ef | 3076 | |
4e8e57b0 | 3077 | /* BLAS functions. */ |
3078 | { | |
36c921b9 | 3079 | tree pint = build_pointer_type (integer_type_node); |
4e8e57b0 | 3080 | tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind)); |
3081 | tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind)); | |
3082 | tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind)); | |
3083 | tree pz = build_pointer_type | |
3084 | (gfc_get_complex_type (gfc_default_double_kind)); | |
3085 | ||
3086 | gfor_fndecl_sgemm = gfc_build_library_function_decl | |
3087 | (get_identifier | |
3088 | (gfc_option.flag_underscoring ? "sgemm_" | |
3089 | : "sgemm"), | |
3090 | void_type_node, 15, pchar_type_node, | |
3091 | pchar_type_node, pint, pint, pint, ps, ps, pint, | |
36c921b9 | 3092 | ps, pint, ps, ps, pint, integer_type_node, |
3093 | integer_type_node); | |
4e8e57b0 | 3094 | gfor_fndecl_dgemm = gfc_build_library_function_decl |
3095 | (get_identifier | |
3096 | (gfc_option.flag_underscoring ? "dgemm_" | |
3097 | : "dgemm"), | |
3098 | void_type_node, 15, pchar_type_node, | |
3099 | pchar_type_node, pint, pint, pint, pd, pd, pint, | |
36c921b9 | 3100 | pd, pint, pd, pd, pint, integer_type_node, |
3101 | integer_type_node); | |
4e8e57b0 | 3102 | gfor_fndecl_cgemm = gfc_build_library_function_decl |
3103 | (get_identifier | |
3104 | (gfc_option.flag_underscoring ? "cgemm_" | |
3105 | : "cgemm"), | |
3106 | void_type_node, 15, pchar_type_node, | |
3107 | pchar_type_node, pint, pint, pint, pc, pc, pint, | |
36c921b9 | 3108 | pc, pint, pc, pc, pint, integer_type_node, |
3109 | integer_type_node); | |
4e8e57b0 | 3110 | gfor_fndecl_zgemm = gfc_build_library_function_decl |
3111 | (get_identifier | |
3112 | (gfc_option.flag_underscoring ? "zgemm_" | |
3113 | : "zgemm"), | |
3114 | void_type_node, 15, pchar_type_node, | |
3115 | pchar_type_node, pint, pint, pint, pz, pz, pint, | |
36c921b9 | 3116 | pz, pint, pz, pz, pint, integer_type_node, |
3117 | integer_type_node); | |
4e8e57b0 | 3118 | } |
3119 | ||
4ee9c684 | 3120 | /* Other functions. */ |
241ecdc7 | 3121 | gfor_fndecl_size0 = gfc_build_library_function_decl_with_spec ( |
3122 | get_identifier (PREFIX("size0")), ".R", | |
3123 | gfc_array_index_type, 1, pvoid_type_node); | |
537824d1 | 3124 | DECL_PURE_P (gfor_fndecl_size0) = 1; |
bc351485 | 3125 | TREE_NOTHROW (gfor_fndecl_size0) = 1; |
241ecdc7 | 3126 | |
3127 | gfor_fndecl_size1 = gfc_build_library_function_decl_with_spec ( | |
3128 | get_identifier (PREFIX("size1")), ".R", | |
3129 | gfc_array_index_type, 2, pvoid_type_node, gfc_array_index_type); | |
537824d1 | 3130 | DECL_PURE_P (gfor_fndecl_size1) = 1; |
bc351485 | 3131 | TREE_NOTHROW (gfor_fndecl_size1) = 1; |
241ecdc7 | 3132 | |
3133 | gfor_fndecl_iargc = gfc_build_library_function_decl ( | |
3134 | get_identifier (PREFIX ("iargc")), gfc_int4_type_node, 0); | |
bc351485 | 3135 | TREE_NOTHROW (gfor_fndecl_iargc) = 1; |
4ee9c684 | 3136 | } |
3137 | ||
3138 | ||
3139 | /* Make prototypes for runtime library functions. */ | |
3140 | ||
3141 | void | |
3142 | gfc_build_builtin_function_decls (void) | |
3143 | { | |
90ba9145 | 3144 | tree gfc_int4_type_node = gfc_get_int_type (4); |
4ee9c684 | 3145 | |
241ecdc7 | 3146 | gfor_fndecl_stop_numeric = gfc_build_library_function_decl ( |
3147 | get_identifier (PREFIX("stop_numeric")), | |
3148 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 3149 | /* STOP doesn't return. */ |
98ccec97 | 3150 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1; |
3151 | ||
dff2ea5f | 3152 | gfor_fndecl_stop_numeric_f08 = gfc_build_library_function_decl ( |
3153 | get_identifier (PREFIX("stop_numeric_f08")), | |
3154 | void_type_node, 1, gfc_int4_type_node); | |
3155 | /* STOP doesn't return. */ | |
3156 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric_f08) = 1; | |
3157 | ||
241ecdc7 | 3158 | gfor_fndecl_stop_string = gfc_build_library_function_decl_with_spec ( |
3159 | get_identifier (PREFIX("stop_string")), ".R.", | |
3160 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
070cc790 | 3161 | /* STOP doesn't return. */ |
241ecdc7 | 3162 | TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1; |
537824d1 | 3163 | |
241ecdc7 | 3164 | gfor_fndecl_error_stop_numeric = gfc_build_library_function_decl ( |
3165 | get_identifier (PREFIX("error_stop_numeric")), | |
3166 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 3167 | /* ERROR STOP doesn't return. */ |
3168 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_numeric) = 1; | |
3169 | ||
241ecdc7 | 3170 | gfor_fndecl_error_stop_string = gfc_build_library_function_decl_with_spec ( |
3171 | get_identifier (PREFIX("error_stop_string")), ".R.", | |
3172 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
c6cd3066 | 3173 | /* ERROR STOP doesn't return. */ |
3174 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_string) = 1; | |
3175 | ||
241ecdc7 | 3176 | gfor_fndecl_pause_numeric = gfc_build_library_function_decl ( |
3177 | get_identifier (PREFIX("pause_numeric")), | |
3178 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 3179 | |
241ecdc7 | 3180 | gfor_fndecl_pause_string = gfc_build_library_function_decl_with_spec ( |
3181 | get_identifier (PREFIX("pause_string")), ".R.", | |
3182 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
4ee9c684 | 3183 | |
241ecdc7 | 3184 | gfor_fndecl_runtime_error = gfc_build_library_function_decl_with_spec ( |
3185 | get_identifier (PREFIX("runtime_error")), ".R", | |
3186 | void_type_node, -1, pchar_type_node); | |
9c0f3811 | 3187 | /* The runtime_error function does not return. */ |
3188 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1; | |
4ee9c684 | 3189 | |
241ecdc7 | 3190 | gfor_fndecl_runtime_error_at = gfc_build_library_function_decl_with_spec ( |
3191 | get_identifier (PREFIX("runtime_error_at")), ".RR", | |
3192 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
50ad5fa2 | 3193 | /* The runtime_error_at function does not return. */ |
3194 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1; | |
a90fe829 | 3195 | |
241ecdc7 | 3196 | gfor_fndecl_runtime_warning_at = gfc_build_library_function_decl_with_spec ( |
3197 | get_identifier (PREFIX("runtime_warning_at")), ".RR", | |
3198 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
3199 | ||
3200 | gfor_fndecl_generate_error = gfc_build_library_function_decl_with_spec ( | |
3201 | get_identifier (PREFIX("generate_error")), ".R.R", | |
3202 | void_type_node, 3, pvoid_type_node, integer_type_node, | |
3203 | pchar_type_node); | |
3204 | ||
3205 | gfor_fndecl_os_error = gfc_build_library_function_decl_with_spec ( | |
3206 | get_identifier (PREFIX("os_error")), ".R", | |
3207 | void_type_node, 1, pchar_type_node); | |
9915365e | 3208 | /* The runtime_error function does not return. */ |
3209 | TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1; | |
3210 | ||
241ecdc7 | 3211 | gfor_fndecl_set_args = gfc_build_library_function_decl ( |
3212 | get_identifier (PREFIX("set_args")), | |
3213 | void_type_node, 2, integer_type_node, | |
3214 | build_pointer_type (pchar_type_node)); | |
7257a5d2 | 3215 | |
241ecdc7 | 3216 | gfor_fndecl_set_fpe = gfc_build_library_function_decl ( |
3217 | get_identifier (PREFIX("set_fpe")), | |
3218 | void_type_node, 1, integer_type_node); | |
8c84a5de | 3219 | |
56c7c2d7 | 3220 | /* Keep the array dimension in sync with the call, later in this file. */ |
241ecdc7 | 3221 | gfor_fndecl_set_options = gfc_build_library_function_decl_with_spec ( |
3222 | get_identifier (PREFIX("set_options")), "..R", | |
3223 | void_type_node, 2, integer_type_node, | |
3224 | build_pointer_type (integer_type_node)); | |
64fc3c4c | 3225 | |
241ecdc7 | 3226 | gfor_fndecl_set_convert = gfc_build_library_function_decl ( |
3227 | get_identifier (PREFIX("set_convert")), | |
3228 | void_type_node, 1, integer_type_node); | |
15774a8b | 3229 | |
241ecdc7 | 3230 | gfor_fndecl_set_record_marker = gfc_build_library_function_decl ( |
3231 | get_identifier (PREFIX("set_record_marker")), | |
3232 | void_type_node, 1, integer_type_node); | |
f23886ab | 3233 | |
241ecdc7 | 3234 | gfor_fndecl_set_max_subrecord_length = gfc_build_library_function_decl ( |
3235 | get_identifier (PREFIX("set_max_subrecord_length")), | |
3236 | void_type_node, 1, integer_type_node); | |
bbaaa7b1 | 3237 | |
8ce86007 | 3238 | gfor_fndecl_in_pack = gfc_build_library_function_decl_with_spec ( |
241ecdc7 | 3239 | get_identifier (PREFIX("internal_pack")), ".r", |
3240 | pvoid_type_node, 1, pvoid_type_node); | |
4ee9c684 | 3241 | |
8ce86007 | 3242 | gfor_fndecl_in_unpack = gfc_build_library_function_decl_with_spec ( |
241ecdc7 | 3243 | get_identifier (PREFIX("internal_unpack")), ".wR", |
3244 | void_type_node, 2, pvoid_type_node, pvoid_type_node); | |
3245 | ||
3246 | gfor_fndecl_associated = gfc_build_library_function_decl_with_spec ( | |
3247 | get_identifier (PREFIX("associated")), ".RR", | |
3248 | integer_type_node, 2, ppvoid_type_node, ppvoid_type_node); | |
537824d1 | 3249 | DECL_PURE_P (gfor_fndecl_associated) = 1; |
bc351485 | 3250 | TREE_NOTHROW (gfor_fndecl_associated) = 1; |
4ee9c684 | 3251 | |
70b5944a | 3252 | /* Coarray library calls. */ |
3253 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
3254 | { | |
3255 | tree pint_type, pppchar_type; | |
3256 | ||
3257 | pint_type = build_pointer_type (integer_type_node); | |
3258 | pppchar_type | |
3259 | = build_pointer_type (build_pointer_type (pchar_type_node)); | |
3260 | ||
3261 | gfor_fndecl_caf_init = gfc_build_library_function_decl ( | |
3262 | get_identifier (PREFIX("caf_init")), void_type_node, | |
53687b4e | 3263 | 2, pint_type, pppchar_type); |
70b5944a | 3264 | |
3265 | gfor_fndecl_caf_finalize = gfc_build_library_function_decl ( | |
3266 | get_identifier (PREFIX("caf_finalize")), void_type_node, 0); | |
3267 | ||
d44f2f7c | 3268 | gfor_fndecl_caf_this_image = gfc_build_library_function_decl ( |
3269 | get_identifier (PREFIX("caf_this_image")), integer_type_node, | |
3270 | 1, integer_type_node); | |
3271 | ||
3272 | gfor_fndecl_caf_num_images = gfc_build_library_function_decl ( | |
3273 | get_identifier (PREFIX("caf_num_images")), integer_type_node, | |
da82fa7c | 3274 | 2, integer_type_node, integer_type_node); |
d44f2f7c | 3275 | |
a961ca30 | 3276 | gfor_fndecl_caf_register = gfc_build_library_function_decl_with_spec ( |
3277 | get_identifier (PREFIX("caf_register")), "...WWW", pvoid_type_node, 6, | |
3278 | size_type_node, integer_type_node, ppvoid_type_node, pint_type, | |
d0d776fb | 3279 | pchar_type_node, integer_type_node); |
3280 | ||
3281 | gfor_fndecl_caf_deregister = gfc_build_library_function_decl_with_spec ( | |
3282 | get_identifier (PREFIX("caf_deregister")), ".WWW", void_type_node, 4, | |
3283 | ppvoid_type_node, pint_type, pchar_type_node, integer_type_node); | |
a961ca30 | 3284 | |
70b5944a | 3285 | gfor_fndecl_caf_critical = gfc_build_library_function_decl ( |
3286 | get_identifier (PREFIX("caf_critical")), void_type_node, 0); | |
3287 | ||
3288 | gfor_fndecl_caf_end_critical = gfc_build_library_function_decl ( | |
3289 | get_identifier (PREFIX("caf_end_critical")), void_type_node, 0); | |
3290 | ||
3291 | gfor_fndecl_caf_sync_all = gfc_build_library_function_decl_with_spec ( | |
96b417f0 | 3292 | get_identifier (PREFIX("caf_sync_all")), ".WW", void_type_node, |
79ed4a8e | 3293 | 3, pint_type, pchar_type_node, integer_type_node); |
70b5944a | 3294 | |
3295 | gfor_fndecl_caf_sync_images = gfc_build_library_function_decl_with_spec ( | |
96b417f0 | 3296 | get_identifier (PREFIX("caf_sync_images")), ".RRWW", void_type_node, |
3297 | 5, integer_type_node, pint_type, pint_type, | |
79ed4a8e | 3298 | pchar_type_node, integer_type_node); |
70b5944a | 3299 | |
3300 | gfor_fndecl_caf_error_stop = gfc_build_library_function_decl ( | |
3301 | get_identifier (PREFIX("caf_error_stop")), | |
3302 | void_type_node, 1, gfc_int4_type_node); | |
3303 | /* CAF's ERROR STOP doesn't return. */ | |
3304 | TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop) = 1; | |
3305 | ||
3306 | gfor_fndecl_caf_error_stop_str = gfc_build_library_function_decl_with_spec ( | |
3307 | get_identifier (PREFIX("caf_error_stop_str")), ".R.", | |
3308 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
3309 | /* CAF's ERROR STOP doesn't return. */ | |
3310 | TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop_str) = 1; | |
79ed4a8e | 3311 | |
3312 | gfor_fndecl_co_max = gfc_build_library_function_decl_with_spec ( | |
3313 | get_identifier (PREFIX("caf_co_max")), "WR.WW", | |
3314 | void_type_node, 7, pvoid_type_node, pvoid_type_node, integer_type_node, | |
3315 | pint_type, pchar_type_node, integer_type_node, integer_type_node); | |
3316 | ||
3317 | gfor_fndecl_co_min = gfc_build_library_function_decl_with_spec ( | |
3318 | get_identifier (PREFIX("caf_co_min")), "WR.WW", | |
3319 | void_type_node, 7, pvoid_type_node, pvoid_type_node, integer_type_node, | |
3320 | pint_type, pchar_type_node, integer_type_node, integer_type_node); | |
3321 | ||
3322 | gfor_fndecl_co_sum = gfc_build_library_function_decl_with_spec ( | |
3323 | get_identifier (PREFIX("caf_co_sum")), "WR.WW", | |
3324 | void_type_node, 6, pvoid_type_node, pvoid_type_node, integer_type_node, | |
3325 | pint_type, pchar_type_node, integer_type_node); | |
70b5944a | 3326 | } |
3327 | ||
4ee9c684 | 3328 | gfc_build_intrinsic_function_decls (); |
3329 | gfc_build_intrinsic_lib_fndecls (); | |
3330 | gfc_build_io_library_fndecls (); | |
3331 | } | |
3332 | ||
3333 | ||
231e961a | 3334 | /* Evaluate the length of dummy character variables. */ |
4ee9c684 | 3335 | |
c5faa799 | 3336 | static void |
3337 | gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, | |
3338 | gfc_wrapped_block *block) | |
4ee9c684 | 3339 | { |
c5faa799 | 3340 | stmtblock_t init; |
4ee9c684 | 3341 | |
b9c7fce7 | 3342 | gfc_finish_decl (cl->backend_decl); |
4ee9c684 | 3343 | |
c5faa799 | 3344 | gfc_start_block (&init); |
4ee9c684 | 3345 | |
3346 | /* Evaluate the string length expression. */ | |
c5faa799 | 3347 | gfc_conv_string_length (cl, NULL, &init); |
d4163395 | 3348 | |
c5faa799 | 3349 | gfc_trans_vla_type_sizes (sym, &init); |
d4163395 | 3350 | |
c5faa799 | 3351 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
4ee9c684 | 3352 | } |
3353 | ||
3354 | ||
3355 | /* Allocate and cleanup an automatic character variable. */ | |
3356 | ||
c5faa799 | 3357 | static void |
3358 | gfc_trans_auto_character_variable (gfc_symbol * sym, gfc_wrapped_block * block) | |
4ee9c684 | 3359 | { |
c5faa799 | 3360 | stmtblock_t init; |
4ee9c684 | 3361 | tree decl; |
4ee9c684 | 3362 | tree tmp; |
3363 | ||
22d678e8 | 3364 | gcc_assert (sym->backend_decl); |
eeebe20b | 3365 | gcc_assert (sym->ts.u.cl && sym->ts.u.cl->length); |
4ee9c684 | 3366 | |
3714c8b6 | 3367 | gfc_init_block (&init); |
4ee9c684 | 3368 | |
3369 | /* Evaluate the string length expression. */ | |
c5faa799 | 3370 | gfc_conv_string_length (sym->ts.u.cl, NULL, &init); |
4ee9c684 | 3371 | |
c5faa799 | 3372 | gfc_trans_vla_type_sizes (sym, &init); |
d4163395 | 3373 | |
4ee9c684 | 3374 | decl = sym->backend_decl; |
3375 | ||
afcf285e | 3376 | /* Emit a DECL_EXPR for this variable, which will cause the |
4b3a701c | 3377 | gimplifier to allocate storage, and all that good stuff. */ |
fd779e1d | 3378 | tmp = fold_build1_loc (input_location, DECL_EXPR, TREE_TYPE (decl), decl); |
c5faa799 | 3379 | gfc_add_expr_to_block (&init, tmp); |
afcf285e | 3380 | |
c5faa799 | 3381 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
4ee9c684 | 3382 | } |
3383 | ||
c8f1568f | 3384 | /* Set the initial value of ASSIGN statement auxiliary variable explicitly. */ |
3385 | ||
c5faa799 | 3386 | static void |
3387 | gfc_trans_assign_aux_var (gfc_symbol * sym, gfc_wrapped_block * block) | |
c8f1568f | 3388 | { |
c5faa799 | 3389 | stmtblock_t init; |
c8f1568f | 3390 | |
3391 | gcc_assert (sym->backend_decl); | |
c5faa799 | 3392 | gfc_start_block (&init); |
c8f1568f | 3393 | |
3394 | /* Set the initial value to length. See the comments in | |
3395 | function gfc_add_assign_aux_vars in this file. */ | |
c5faa799 | 3396 | gfc_add_modify (&init, GFC_DECL_STRING_LEN (sym->backend_decl), |
35bf1214 | 3397 | build_int_cst (gfc_charlen_type_node, -2)); |
c8f1568f | 3398 | |
c5faa799 | 3399 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
c8f1568f | 3400 | } |
3401 | ||
d4163395 | 3402 | static void |
3403 | gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body) | |
3404 | { | |
3405 | tree t = *tp, var, val; | |
3406 | ||
3407 | if (t == NULL || t == error_mark_node) | |
3408 | return; | |
3409 | if (TREE_CONSTANT (t) || DECL_P (t)) | |
3410 | return; | |
3411 | ||
3412 | if (TREE_CODE (t) == SAVE_EXPR) | |
3413 | { | |
3414 | if (SAVE_EXPR_RESOLVED_P (t)) | |
3415 | { | |
3416 | *tp = TREE_OPERAND (t, 0); | |
3417 | return; | |
3418 | } | |
3419 | val = TREE_OPERAND (t, 0); | |
3420 | } | |
3421 | else | |
3422 | val = t; | |
3423 | ||
3424 | var = gfc_create_var_np (TREE_TYPE (t), NULL); | |
3425 | gfc_add_decl_to_function (var); | |
75a70cf9 | 3426 | gfc_add_modify (body, var, val); |
d4163395 | 3427 | if (TREE_CODE (t) == SAVE_EXPR) |
3428 | TREE_OPERAND (t, 0) = var; | |
3429 | *tp = var; | |
3430 | } | |
3431 | ||
3432 | static void | |
3433 | gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body) | |
3434 | { | |
3435 | tree t; | |
3436 | ||
3437 | if (type == NULL || type == error_mark_node) | |
3438 | return; | |
3439 | ||
3440 | type = TYPE_MAIN_VARIANT (type); | |
3441 | ||
3442 | if (TREE_CODE (type) == INTEGER_TYPE) | |
3443 | { | |
3444 | gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body); | |
3445 | gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body); | |
3446 | ||
3447 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3448 | { | |
3449 | TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type); | |
3450 | TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type); | |
3451 | } | |
3452 | } | |
3453 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
3454 | { | |
3455 | gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body); | |
3456 | gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body); | |
3457 | gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body); | |
3458 | gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body); | |
3459 | ||
3460 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3461 | { | |
3462 | TYPE_SIZE (t) = TYPE_SIZE (type); | |
3463 | TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type); | |
3464 | } | |
3465 | } | |
3466 | } | |
3467 | ||
3468 | /* Make sure all type sizes and array domains are either constant, | |
3469 | or variable or parameter decls. This is a simplified variant | |
3470 | of gimplify_type_sizes, but we can't use it here, as none of the | |
3471 | variables in the expressions have been gimplified yet. | |
3472 | As type sizes and domains for various variable length arrays | |
3473 | contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars | |
3474 | time, without this routine gimplify_type_sizes in the middle-end | |
3475 | could result in the type sizes being gimplified earlier than where | |
3476 | those variables are initialized. */ | |
3477 | ||
3478 | void | |
3479 | gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body) | |
3480 | { | |
3481 | tree type = TREE_TYPE (sym->backend_decl); | |
3482 | ||
3483 | if (TREE_CODE (type) == FUNCTION_TYPE | |
3484 | && (sym->attr.function || sym->attr.result || sym->attr.entry)) | |
3485 | { | |
3486 | if (! current_fake_result_decl) | |
3487 | return; | |
3488 | ||
3489 | type = TREE_TYPE (TREE_VALUE (current_fake_result_decl)); | |
3490 | } | |
3491 | ||
3492 | while (POINTER_TYPE_P (type)) | |
3493 | type = TREE_TYPE (type); | |
3494 | ||
3495 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
3496 | { | |
3497 | tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type); | |
3498 | ||
3499 | while (POINTER_TYPE_P (etype)) | |
3500 | etype = TREE_TYPE (etype); | |
3501 | ||
3502 | gfc_trans_vla_type_sizes_1 (etype, body); | |
3503 | } | |
3504 | ||
3505 | gfc_trans_vla_type_sizes_1 (type, body); | |
3506 | } | |
3507 | ||
4ee9c684 | 3508 | |
f0d4969f | 3509 | /* Initialize a derived type by building an lvalue from the symbol |
a545a8f8 | 3510 | and using trans_assignment to do the work. Set dealloc to false |
3511 | if no deallocation prior the assignment is needed. */ | |
c5faa799 | 3512 | void |
3513 | gfc_init_default_dt (gfc_symbol * sym, stmtblock_t * block, bool dealloc) | |
87114d2e | 3514 | { |
f0d4969f | 3515 | gfc_expr *e; |
87114d2e | 3516 | tree tmp; |
3517 | tree present; | |
3518 | ||
c5faa799 | 3519 | gcc_assert (block); |
3520 | ||
f0d4969f | 3521 | gcc_assert (!sym->attr.allocatable); |
3522 | gfc_set_sym_referenced (sym); | |
3523 | e = gfc_lval_expr_from_sym (sym); | |
a545a8f8 | 3524 | tmp = gfc_trans_assignment (e, sym->value, false, dealloc); |
c38054a8 | 3525 | if (sym->attr.dummy && (sym->attr.optional |
3526 | || sym->ns->proc_name->attr.entry_master)) | |
87114d2e | 3527 | { |
f0d4969f | 3528 | present = gfc_conv_expr_present (sym); |
2be9d8f1 | 3529 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), present, |
3530 | tmp, build_empty_stmt (input_location)); | |
87114d2e | 3531 | } |
c5faa799 | 3532 | gfc_add_expr_to_block (block, tmp); |
f0d4969f | 3533 | gfc_free_expr (e); |
87114d2e | 3534 | } |
3535 | ||
3536 | ||
8714fc76 | 3537 | /* Initialize INTENT(OUT) derived type dummies. As well as giving |
3538 | them their default initializer, if they do not have allocatable | |
3539 | components, they have their allocatable components deallocated. */ | |
3540 | ||
c5faa799 | 3541 | static void |
3542 | init_intent_out_dt (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
f0d4969f | 3543 | { |
c5faa799 | 3544 | stmtblock_t init; |
f0d4969f | 3545 | gfc_formal_arglist *f; |
8714fc76 | 3546 | tree tmp; |
5907c3ea | 3547 | tree present; |
f0d4969f | 3548 | |
c5faa799 | 3549 | gfc_init_block (&init); |
6777213b | 3550 | for (f = gfc_sym_get_dummy_args (proc_sym); f; f = f->next) |
f0d4969f | 3551 | if (f->sym && f->sym->attr.intent == INTENT_OUT |
c49db15e | 3552 | && !f->sym->attr.pointer |
3553 | && f->sym->ts.type == BT_DERIVED) | |
8714fc76 | 3554 | { |
942ba353 | 3555 | tmp = NULL_TREE; |
3556 | ||
3557 | /* Note: Allocatables are excluded as they are already handled | |
3558 | by the caller. */ | |
3559 | if (!f->sym->attr.allocatable | |
3560 | && gfc_is_finalizable (f->sym->ts.u.derived, NULL)) | |
8714fc76 | 3561 | { |
942ba353 | 3562 | stmtblock_t block; |
3563 | gfc_expr *e; | |
3564 | ||
3565 | gfc_init_block (&block); | |
3566 | f->sym->attr.referenced = 1; | |
3567 | e = gfc_lval_expr_from_sym (f->sym); | |
3568 | gfc_add_finalizer_call (&block, e); | |
3569 | gfc_free_expr (e); | |
3570 | tmp = gfc_finish_block (&block); | |
3571 | } | |
5907c3ea | 3572 | |
942ba353 | 3573 | if (tmp == NULL_TREE && !f->sym->attr.allocatable |
3574 | && f->sym->ts.u.derived->attr.alloc_comp && !f->sym->value) | |
3575 | tmp = gfc_deallocate_alloc_comp (f->sym->ts.u.derived, | |
3576 | f->sym->backend_decl, | |
3577 | f->sym->as ? f->sym->as->rank : 0); | |
5907c3ea | 3578 | |
942ba353 | 3579 | if (tmp != NULL_TREE && (f->sym->attr.optional |
3580 | || f->sym->ns->proc_name->attr.entry_master)) | |
3581 | { | |
3582 | present = gfc_conv_expr_present (f->sym); | |
3583 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), | |
3584 | present, tmp, build_empty_stmt (input_location)); | |
8714fc76 | 3585 | } |
942ba353 | 3586 | |
3587 | if (tmp != NULL_TREE) | |
3588 | gfc_add_expr_to_block (&init, tmp); | |
3589 | else if (f->sym->value && !f->sym->attr.allocatable) | |
c5faa799 | 3590 | gfc_init_default_dt (f->sym, &init, true); |
8714fc76 | 3591 | } |
c56d57d6 | 3592 | else if (f->sym && f->sym->attr.intent == INTENT_OUT |
3593 | && f->sym->ts.type == BT_CLASS | |
3594 | && !CLASS_DATA (f->sym)->attr.class_pointer | |
942ba353 | 3595 | && !CLASS_DATA (f->sym)->attr.allocatable) |
c56d57d6 | 3596 | { |
942ba353 | 3597 | stmtblock_t block; |
3598 | gfc_expr *e; | |
3599 | ||
3600 | gfc_init_block (&block); | |
3601 | f->sym->attr.referenced = 1; | |
3602 | e = gfc_lval_expr_from_sym (f->sym); | |
3603 | gfc_add_finalizer_call (&block, e); | |
3604 | gfc_free_expr (e); | |
3605 | tmp = gfc_finish_block (&block); | |
c56d57d6 | 3606 | |
3607 | if (f->sym->attr.optional || f->sym->ns->proc_name->attr.entry_master) | |
3608 | { | |
3609 | present = gfc_conv_expr_present (f->sym); | |
3610 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), | |
3611 | present, tmp, | |
3612 | build_empty_stmt (input_location)); | |
3613 | } | |
3614 | ||
3615 | gfc_add_expr_to_block (&init, tmp); | |
3616 | } | |
f0d4969f | 3617 | |
c5faa799 | 3618 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
f0d4969f | 3619 | } |
3620 | ||
87114d2e | 3621 | |
4ee9c684 | 3622 | /* Generate function entry and exit code, and add it to the function body. |
3623 | This includes: | |
f888a3fb | 3624 | Allocation and initialization of array variables. |
4ee9c684 | 3625 | Allocation of character string variables. |
c8f1568f | 3626 | Initialization and possibly repacking of dummy arrays. |
0a96a7cc | 3627 | Initialization of ASSIGN statement auxiliary variable. |
8f3f9eab | 3628 | Initialization of ASSOCIATE names. |
0a96a7cc | 3629 | Automatic deallocation. */ |
4ee9c684 | 3630 | |
89ac8ba1 | 3631 | void |
3632 | gfc_trans_deferred_vars (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
4ee9c684 | 3633 | { |
3634 | locus loc; | |
3635 | gfc_symbol *sym; | |
d4163395 | 3636 | gfc_formal_arglist *f; |
c5faa799 | 3637 | stmtblock_t tmpblock; |
25dd7350 | 3638 | bool seen_trans_deferred_array = false; |
617125a6 | 3639 | tree tmp = NULL; |
3640 | gfc_expr *e; | |
3641 | gfc_se se; | |
3642 | stmtblock_t init; | |
4ee9c684 | 3643 | |
3644 | /* Deal with implicit return variables. Explicit return variables will | |
3645 | already have been added. */ | |
3646 | if (gfc_return_by_reference (proc_sym) && proc_sym->result == proc_sym) | |
3647 | { | |
3648 | if (!current_fake_result_decl) | |
3649 | { | |
c6871095 | 3650 | gfc_entry_list *el = NULL; |
3651 | if (proc_sym->attr.entry_master) | |
3652 | { | |
3653 | for (el = proc_sym->ns->entries; el; el = el->next) | |
3654 | if (el->sym != el->sym->result) | |
3655 | break; | |
3656 | } | |
fa7b6574 | 3657 | /* TODO: move to the appropriate place in resolve.c. */ |
3658 | if (warn_return_type && el == NULL) | |
3659 | gfc_warning ("Return value of function '%s' at %L not set", | |
3660 | proc_sym->name, &proc_sym->declared_at); | |
4ee9c684 | 3661 | } |
c6871095 | 3662 | else if (proc_sym->as) |
4ee9c684 | 3663 | { |
d4163395 | 3664 | tree result = TREE_VALUE (current_fake_result_decl); |
89ac8ba1 | 3665 | gfc_trans_dummy_array_bias (proc_sym, result, block); |
10b07432 | 3666 | |
3667 | /* An automatic character length, pointer array result. */ | |
3668 | if (proc_sym->ts.type == BT_CHARACTER | |
eeebe20b | 3669 | && TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) |
89ac8ba1 | 3670 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
4ee9c684 | 3671 | } |
3672 | else if (proc_sym->ts.type == BT_CHARACTER) | |
3673 | { | |
617125a6 | 3674 | if (proc_sym->ts.deferred) |
3675 | { | |
3676 | tmp = NULL; | |
da2c4122 | 3677 | gfc_save_backend_locus (&loc); |
3678 | gfc_set_backend_locus (&proc_sym->declared_at); | |
617125a6 | 3679 | gfc_start_block (&init); |
3680 | /* Zero the string length on entry. */ | |
3681 | gfc_add_modify (&init, proc_sym->ts.u.cl->backend_decl, | |
3682 | build_int_cst (gfc_charlen_type_node, 0)); | |
3683 | /* Null the pointer. */ | |
3684 | e = gfc_lval_expr_from_sym (proc_sym); | |
3685 | gfc_init_se (&se, NULL); | |
3686 | se.want_pointer = 1; | |
3687 | gfc_conv_expr (&se, e); | |
3688 | gfc_free_expr (e); | |
3689 | tmp = se.expr; | |
3690 | gfc_add_modify (&init, tmp, | |
3691 | fold_convert (TREE_TYPE (se.expr), | |
3692 | null_pointer_node)); | |
da2c4122 | 3693 | gfc_restore_backend_locus (&loc); |
617125a6 | 3694 | |
3695 | /* Pass back the string length on exit. */ | |
3696 | tmp = proc_sym->ts.u.cl->passed_length; | |
3697 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
3698 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
3699 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
3700 | gfc_charlen_type_node, tmp, | |
3701 | proc_sym->ts.u.cl->backend_decl); | |
3702 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
3703 | } | |
3704 | else if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) | |
89ac8ba1 | 3705 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
4ee9c684 | 3706 | } |
3707 | else | |
bdaed7d2 | 3708 | gcc_assert (gfc_option.flag_f2c |
3709 | && proc_sym->ts.type == BT_COMPLEX); | |
4ee9c684 | 3710 | } |
3711 | ||
87114d2e | 3712 | /* Initialize the INTENT(OUT) derived type dummy arguments. This |
3713 | should be done here so that the offsets and lbounds of arrays | |
3714 | are available. */ | |
da2c4122 | 3715 | gfc_save_backend_locus (&loc); |
3716 | gfc_set_backend_locus (&proc_sym->declared_at); | |
89ac8ba1 | 3717 | init_intent_out_dt (proc_sym, block); |
da2c4122 | 3718 | gfc_restore_backend_locus (&loc); |
87114d2e | 3719 | |
4ee9c684 | 3720 | for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink) |
3721 | { | |
6b3ceb4e | 3722 | bool alloc_comp_or_fini = (sym->ts.type == BT_DERIVED) |
3723 | && (sym->ts.u.derived->attr.alloc_comp | |
3724 | || gfc_is_finalizable (sym->ts.u.derived, | |
3725 | NULL)); | |
8f3f9eab | 3726 | if (sym->assoc) |
3c82e013 | 3727 | continue; |
3728 | ||
a56d63bc | 3729 | if (sym->attr.subref_array_pointer |
3730 | && GFC_DECL_SPAN (sym->backend_decl) | |
3731 | && !TREE_STATIC (GFC_DECL_SPAN (sym->backend_decl))) | |
3732 | { | |
3733 | gfc_init_block (&tmpblock); | |
3734 | gfc_add_modify (&tmpblock, GFC_DECL_SPAN (sym->backend_decl), | |
3735 | build_int_cst (gfc_array_index_type, 0)); | |
3736 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
3737 | NULL_TREE); | |
3738 | } | |
3739 | ||
85ae3cab | 3740 | if (sym->ts.type == BT_CLASS |
3741 | && (sym->attr.save || gfc_option.flag_max_stack_var_size == 0) | |
fb139b21 | 3742 | && CLASS_DATA (sym)->attr.allocatable) |
3743 | { | |
3744 | tree vptr; | |
3745 | ||
3746 | if (UNLIMITED_POLY (sym)) | |
3747 | vptr = null_pointer_node; | |
3748 | else | |
3749 | { | |
3750 | gfc_symbol *vsym; | |
3751 | vsym = gfc_find_derived_vtab (sym->ts.u.derived); | |
3752 | vptr = gfc_get_symbol_decl (vsym); | |
3753 | vptr = gfc_build_addr_expr (NULL, vptr); | |
3754 | } | |
3755 | ||
3756 | if (CLASS_DATA (sym)->attr.dimension | |
3757 | || (CLASS_DATA (sym)->attr.codimension | |
3758 | && gfc_option.coarray != GFC_FCOARRAY_LIB)) | |
3759 | { | |
3760 | tmp = gfc_class_data_get (sym->backend_decl); | |
3761 | tmp = gfc_build_null_descriptor (TREE_TYPE (tmp)); | |
3762 | } | |
3763 | else | |
3764 | tmp = null_pointer_node; | |
3765 | ||
3766 | DECL_INITIAL (sym->backend_decl) | |
3767 | = gfc_class_set_static_fields (sym->backend_decl, vptr, tmp); | |
3768 | TREE_CONSTANT (DECL_INITIAL (sym->backend_decl)) = 1; | |
3769 | } | |
3770 | else if (sym->attr.dimension || sym->attr.codimension) | |
4ee9c684 | 3771 | { |
f7a6fca4 | 3772 | /* Assumed-size Cray pointees need to be treated as AS_EXPLICIT. */ |
3773 | array_type tmp = sym->as->type; | |
3774 | if (tmp == AS_ASSUMED_SIZE && sym->as->cp_was_assumed) | |
3775 | tmp = AS_EXPLICIT; | |
3776 | switch (tmp) | |
4ee9c684 | 3777 | { |
3778 | case AS_EXPLICIT: | |
3779 | if (sym->attr.dummy || sym->attr.result) | |
89ac8ba1 | 3780 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
4ee9c684 | 3781 | else if (sym->attr.pointer || sym->attr.allocatable) |
3782 | { | |
3783 | if (TREE_STATIC (sym->backend_decl)) | |
da2c4122 | 3784 | { |
3785 | gfc_save_backend_locus (&loc); | |
3786 | gfc_set_backend_locus (&sym->declared_at); | |
3787 | gfc_trans_static_array_pointer (sym); | |
3788 | gfc_restore_backend_locus (&loc); | |
3789 | } | |
4ee9c684 | 3790 | else |
25dd7350 | 3791 | { |
3792 | seen_trans_deferred_array = true; | |
89ac8ba1 | 3793 | gfc_trans_deferred_array (sym, block); |
25dd7350 | 3794 | } |
4ee9c684 | 3795 | } |
7c7db7f6 | 3796 | else if (sym->attr.codimension && TREE_STATIC (sym->backend_decl)) |
3797 | { | |
3798 | gfc_init_block (&tmpblock); | |
3799 | gfc_trans_array_cobounds (TREE_TYPE (sym->backend_decl), | |
3800 | &tmpblock, sym); | |
3801 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
3802 | NULL_TREE); | |
3803 | continue; | |
3804 | } | |
a961ca30 | 3805 | else if (gfc_option.coarray != GFC_FCOARRAY_LIB) |
4ee9c684 | 3806 | { |
da2c4122 | 3807 | gfc_save_backend_locus (&loc); |
3808 | gfc_set_backend_locus (&sym->declared_at); | |
3809 | ||
6b3ceb4e | 3810 | if (alloc_comp_or_fini) |
25dd7350 | 3811 | { |
3812 | seen_trans_deferred_array = true; | |
89ac8ba1 | 3813 | gfc_trans_deferred_array (sym, block); |
25dd7350 | 3814 | } |
f0d4969f | 3815 | else if (sym->ts.type == BT_DERIVED |
3816 | && sym->value | |
3817 | && !sym->attr.data | |
3818 | && sym->attr.save == SAVE_NONE) | |
c5faa799 | 3819 | { |
3820 | gfc_start_block (&tmpblock); | |
3821 | gfc_init_default_dt (sym, &tmpblock, false); | |
89ac8ba1 | 3822 | gfc_add_init_cleanup (block, |
c5faa799 | 3823 | gfc_finish_block (&tmpblock), |
3824 | NULL_TREE); | |
3825 | } | |
25dd7350 | 3826 | |
c5faa799 | 3827 | gfc_trans_auto_array_allocation (sym->backend_decl, |
89ac8ba1 | 3828 | sym, block); |
4671339c | 3829 | gfc_restore_backend_locus (&loc); |
4ee9c684 | 3830 | } |
3831 | break; | |
3832 | ||
3833 | case AS_ASSUMED_SIZE: | |
3834 | /* Must be a dummy parameter. */ | |
452695a8 | 3835 | gcc_assert (sym->attr.dummy || sym->as->cp_was_assumed); |
4ee9c684 | 3836 | |
3837 | /* We should always pass assumed size arrays the g77 way. */ | |
452695a8 | 3838 | if (sym->attr.dummy) |
89ac8ba1 | 3839 | gfc_trans_g77_array (sym, block); |
c5faa799 | 3840 | break; |
4ee9c684 | 3841 | |
3842 | case AS_ASSUMED_SHAPE: | |
3843 | /* Must be a dummy parameter. */ | |
22d678e8 | 3844 | gcc_assert (sym->attr.dummy); |
4ee9c684 | 3845 | |
89ac8ba1 | 3846 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
4ee9c684 | 3847 | break; |
3848 | ||
f00f6dd6 | 3849 | case AS_ASSUMED_RANK: |
4ee9c684 | 3850 | case AS_DEFERRED: |
25dd7350 | 3851 | seen_trans_deferred_array = true; |
89ac8ba1 | 3852 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 3853 | break; |
3854 | ||
3855 | default: | |
22d678e8 | 3856 | gcc_unreachable (); |
4ee9c684 | 3857 | } |
6b3ceb4e | 3858 | if (alloc_comp_or_fini && !seen_trans_deferred_array) |
89ac8ba1 | 3859 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 3860 | } |
fd23cc08 | 3861 | else if ((!sym->attr.dummy || sym->ts.deferred) |
3862 | && (sym->ts.type == BT_CLASS | |
3a19c063 | 3863 | && CLASS_DATA (sym)->attr.class_pointer)) |
2930c007 | 3864 | continue; |
617125a6 | 3865 | else if ((!sym->attr.dummy || sym->ts.deferred) |
456dd7d6 | 3866 | && (sym->attr.allocatable |
3867 | || (sym->ts.type == BT_CLASS | |
3868 | && CLASS_DATA (sym)->attr.allocatable))) | |
0a96a7cc | 3869 | { |
be125be0 | 3870 | if (!sym->attr.save && gfc_option.flag_max_stack_var_size != 0) |
908e9973 | 3871 | { |
d0d776fb | 3872 | tree descriptor = NULL_TREE; |
3873 | ||
908e9973 | 3874 | /* Nullify and automatic deallocation of allocatable |
3875 | scalars. */ | |
908e9973 | 3876 | e = gfc_lval_expr_from_sym (sym); |
3877 | if (sym->ts.type == BT_CLASS) | |
607ae689 | 3878 | gfc_add_data_component (e); |
908e9973 | 3879 | |
3880 | gfc_init_se (&se, NULL); | |
fd23cc08 | 3881 | if (sym->ts.type != BT_CLASS |
3882 | || sym->ts.u.derived->attr.dimension | |
3883 | || sym->ts.u.derived->attr.codimension) | |
3884 | { | |
3885 | se.want_pointer = 1; | |
3886 | gfc_conv_expr (&se, e); | |
3887 | } | |
3888 | else if (sym->ts.type == BT_CLASS | |
3889 | && !CLASS_DATA (sym)->attr.dimension | |
3890 | && !CLASS_DATA (sym)->attr.codimension) | |
3891 | { | |
3892 | se.want_pointer = 1; | |
3893 | gfc_conv_expr (&se, e); | |
3894 | } | |
3895 | else | |
3896 | { | |
3897 | gfc_conv_expr (&se, e); | |
d0d776fb | 3898 | descriptor = se.expr; |
fd23cc08 | 3899 | se.expr = gfc_conv_descriptor_data_addr (se.expr); |
3900 | se.expr = build_fold_indirect_ref_loc (input_location, se.expr); | |
3901 | } | |
908e9973 | 3902 | gfc_free_expr (e); |
3903 | ||
da2c4122 | 3904 | gfc_save_backend_locus (&loc); |
3905 | gfc_set_backend_locus (&sym->declared_at); | |
c5faa799 | 3906 | gfc_start_block (&init); |
617125a6 | 3907 | |
3908 | if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
3909 | { | |
3910 | /* Nullify when entering the scope. */ | |
883d6776 | 3911 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
3912 | TREE_TYPE (se.expr), se.expr, | |
3913 | fold_convert (TREE_TYPE (se.expr), | |
3914 | null_pointer_node)); | |
3915 | if (sym->attr.optional) | |
3916 | { | |
3917 | tree present = gfc_conv_expr_present (sym); | |
3918 | tmp = build3_loc (input_location, COND_EXPR, | |
3919 | void_type_node, present, tmp, | |
3920 | build_empty_stmt (input_location)); | |
3921 | } | |
3922 | gfc_add_expr_to_block (&init, tmp); | |
617125a6 | 3923 | } |
3924 | ||
883d6776 | 3925 | if ((sym->attr.dummy || sym->attr.result) |
617125a6 | 3926 | && sym->ts.type == BT_CHARACTER |
3927 | && sym->ts.deferred) | |
3928 | { | |
3929 | /* Character length passed by reference. */ | |
3930 | tmp = sym->ts.u.cl->passed_length; | |
3931 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
3932 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
3933 | ||
3934 | if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
3935 | /* Zero the string length when entering the scope. */ | |
3936 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, | |
3937 | build_int_cst (gfc_charlen_type_node, 0)); | |
3938 | else | |
883d6776 | 3939 | { |
3940 | tree tmp2; | |
3941 | ||
3942 | tmp2 = fold_build2_loc (input_location, MODIFY_EXPR, | |
3943 | gfc_charlen_type_node, | |
3944 | sym->ts.u.cl->backend_decl, tmp); | |
3945 | if (sym->attr.optional) | |
3946 | { | |
3947 | tree present = gfc_conv_expr_present (sym); | |
3948 | tmp2 = build3_loc (input_location, COND_EXPR, | |
3949 | void_type_node, present, tmp2, | |
3950 | build_empty_stmt (input_location)); | |
3951 | } | |
3952 | gfc_add_expr_to_block (&init, tmp2); | |
3953 | } | |
617125a6 | 3954 | |
da2c4122 | 3955 | gfc_restore_backend_locus (&loc); |
3956 | ||
617125a6 | 3957 | /* Pass the final character length back. */ |
3958 | if (sym->attr.intent != INTENT_IN) | |
883d6776 | 3959 | { |
3960 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
3961 | gfc_charlen_type_node, tmp, | |
3962 | sym->ts.u.cl->backend_decl); | |
3963 | if (sym->attr.optional) | |
3964 | { | |
3965 | tree present = gfc_conv_expr_present (sym); | |
3966 | tmp = build3_loc (input_location, COND_EXPR, | |
3967 | void_type_node, present, tmp, | |
3968 | build_empty_stmt (input_location)); | |
3969 | } | |
3970 | } | |
617125a6 | 3971 | else |
3972 | tmp = NULL_TREE; | |
3973 | } | |
da2c4122 | 3974 | else |
3975 | gfc_restore_backend_locus (&loc); | |
908e9973 | 3976 | |
3977 | /* Deallocate when leaving the scope. Nullifying is not | |
3978 | needed. */ | |
afb69dbf | 3979 | if (!sym->attr.result && !sym->attr.dummy |
3980 | && !sym->ns->proc_name->attr.is_main_program) | |
d0d776fb | 3981 | { |
3982 | if (sym->ts.type == BT_CLASS | |
3983 | && CLASS_DATA (sym)->attr.codimension) | |
3984 | tmp = gfc_deallocate_with_status (descriptor, NULL_TREE, | |
3985 | NULL_TREE, NULL_TREE, | |
3986 | NULL_TREE, true, NULL, | |
3987 | true); | |
3988 | else | |
c23adf93 | 3989 | { |
3990 | gfc_expr *expr = gfc_lval_expr_from_sym (sym); | |
3991 | tmp = gfc_deallocate_scalar_with_status (se.expr, NULL_TREE, | |
3992 | true, expr, sym->ts); | |
3993 | gfc_free_expr (expr); | |
3994 | } | |
d0d776fb | 3995 | } |
afc44c79 | 3996 | if (sym->ts.type == BT_CLASS) |
3997 | { | |
3998 | /* Initialize _vptr to declared type. */ | |
a90fe829 | 3999 | gfc_symbol *vtab; |
afc44c79 | 4000 | tree rhs; |
da2c4122 | 4001 | |
4002 | gfc_save_backend_locus (&loc); | |
4003 | gfc_set_backend_locus (&sym->declared_at); | |
afc44c79 | 4004 | e = gfc_lval_expr_from_sym (sym); |
4005 | gfc_add_vptr_component (e); | |
4006 | gfc_init_se (&se, NULL); | |
4007 | se.want_pointer = 1; | |
4008 | gfc_conv_expr (&se, e); | |
4009 | gfc_free_expr (e); | |
a90fe829 | 4010 | if (UNLIMITED_POLY (sym)) |
4011 | rhs = build_int_cst (TREE_TYPE (se.expr), 0); | |
4012 | else | |
4013 | { | |
4014 | vtab = gfc_find_derived_vtab (sym->ts.u.derived); | |
4015 | rhs = gfc_build_addr_expr (TREE_TYPE (se.expr), | |
4016 | gfc_get_symbol_decl (vtab)); | |
4017 | } | |
afc44c79 | 4018 | gfc_add_modify (&init, se.expr, rhs); |
da2c4122 | 4019 | gfc_restore_backend_locus (&loc); |
afc44c79 | 4020 | } |
4021 | ||
89ac8ba1 | 4022 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); |
908e9973 | 4023 | } |
0a96a7cc | 4024 | } |
617125a6 | 4025 | else if (sym->ts.type == BT_CHARACTER && sym->ts.deferred) |
4026 | { | |
4027 | tree tmp = NULL; | |
4028 | stmtblock_t init; | |
4029 | ||
4030 | /* If we get to here, all that should be left are pointers. */ | |
4031 | gcc_assert (sym->attr.pointer); | |
4032 | ||
4033 | if (sym->attr.dummy) | |
4034 | { | |
4035 | gfc_start_block (&init); | |
4036 | ||
4037 | /* Character length passed by reference. */ | |
4038 | tmp = sym->ts.u.cl->passed_length; | |
4039 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
4040 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
4041 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, tmp); | |
4042 | /* Pass the final character length back. */ | |
4043 | if (sym->attr.intent != INTENT_IN) | |
4044 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
4045 | gfc_charlen_type_node, tmp, | |
4046 | sym->ts.u.cl->backend_decl); | |
4047 | else | |
4048 | tmp = NULL_TREE; | |
4049 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
4050 | } | |
4051 | } | |
3e715c81 | 4052 | else if (sym->ts.deferred) |
4053 | gfc_fatal_error ("Deferred type parameter not yet supported"); | |
6b3ceb4e | 4054 | else if (alloc_comp_or_fini) |
89ac8ba1 | 4055 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 4056 | else if (sym->ts.type == BT_CHARACTER) |
4057 | { | |
4671339c | 4058 | gfc_save_backend_locus (&loc); |
4ee9c684 | 4059 | gfc_set_backend_locus (&sym->declared_at); |
4060 | if (sym->attr.dummy || sym->attr.result) | |
89ac8ba1 | 4061 | gfc_trans_dummy_character (sym, sym->ts.u.cl, block); |
4ee9c684 | 4062 | else |
89ac8ba1 | 4063 | gfc_trans_auto_character_variable (sym, block); |
4671339c | 4064 | gfc_restore_backend_locus (&loc); |
4ee9c684 | 4065 | } |
c8f1568f | 4066 | else if (sym->attr.assign) |
4067 | { | |
4671339c | 4068 | gfc_save_backend_locus (&loc); |
c8f1568f | 4069 | gfc_set_backend_locus (&sym->declared_at); |
89ac8ba1 | 4070 | gfc_trans_assign_aux_var (sym, block); |
4671339c | 4071 | gfc_restore_backend_locus (&loc); |
c8f1568f | 4072 | } |
f0d4969f | 4073 | else if (sym->ts.type == BT_DERIVED |
4074 | && sym->value | |
4075 | && !sym->attr.data | |
4076 | && sym->attr.save == SAVE_NONE) | |
c5faa799 | 4077 | { |
4078 | gfc_start_block (&tmpblock); | |
4079 | gfc_init_default_dt (sym, &tmpblock, false); | |
89ac8ba1 | 4080 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), |
c5faa799 | 4081 | NULL_TREE); |
4082 | } | |
a90fe829 | 4083 | else if (!(UNLIMITED_POLY(sym))) |
22d678e8 | 4084 | gcc_unreachable (); |
4ee9c684 | 4085 | } |
4086 | ||
c5faa799 | 4087 | gfc_init_block (&tmpblock); |
d4163395 | 4088 | |
6777213b | 4089 | for (f = gfc_sym_get_dummy_args (proc_sym); f; f = f->next) |
1e853e89 | 4090 | { |
4091 | if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER) | |
4092 | { | |
eeebe20b | 4093 | gcc_assert (f->sym->ts.u.cl->backend_decl != NULL); |
4094 | if (TREE_CODE (f->sym->ts.u.cl->backend_decl) == PARM_DECL) | |
c5faa799 | 4095 | gfc_trans_vla_type_sizes (f->sym, &tmpblock); |
1e853e89 | 4096 | } |
1e853e89 | 4097 | } |
d4163395 | 4098 | |
4099 | if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER | |
4100 | && current_fake_result_decl != NULL) | |
4101 | { | |
eeebe20b | 4102 | gcc_assert (proc_sym->ts.u.cl->backend_decl != NULL); |
4103 | if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == PARM_DECL) | |
c5faa799 | 4104 | gfc_trans_vla_type_sizes (proc_sym, &tmpblock); |
d4163395 | 4105 | } |
4106 | ||
89ac8ba1 | 4107 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), NULL_TREE); |
4ee9c684 | 4108 | } |
4109 | ||
df4d540f | 4110 | static GTY ((param_is (struct module_htab_entry))) htab_t module_htab; |
4111 | ||
4112 | /* Hash and equality functions for module_htab. */ | |
4113 | ||
4114 | static hashval_t | |
4115 | module_htab_do_hash (const void *x) | |
4116 | { | |
4117 | return htab_hash_string (((const struct module_htab_entry *)x)->name); | |
4118 | } | |
4119 | ||
4120 | static int | |
4121 | module_htab_eq (const void *x1, const void *x2) | |
4122 | { | |
4123 | return strcmp ((((const struct module_htab_entry *)x1)->name), | |
4124 | (const char *)x2) == 0; | |
4125 | } | |
4126 | ||
4127 | /* Hash and equality functions for module_htab's decls. */ | |
4128 | ||
4129 | static hashval_t | |
4130 | module_htab_decls_hash (const void *x) | |
4131 | { | |
4132 | const_tree t = (const_tree) x; | |
4133 | const_tree n = DECL_NAME (t); | |
4134 | if (n == NULL_TREE) | |
4135 | n = TYPE_NAME (TREE_TYPE (t)); | |
8f1e8e0e | 4136 | return htab_hash_string (IDENTIFIER_POINTER (n)); |
df4d540f | 4137 | } |
4138 | ||
4139 | static int | |
4140 | module_htab_decls_eq (const void *x1, const void *x2) | |
4141 | { | |
4142 | const_tree t1 = (const_tree) x1; | |
4143 | const_tree n1 = DECL_NAME (t1); | |
4144 | if (n1 == NULL_TREE) | |
4145 | n1 = TYPE_NAME (TREE_TYPE (t1)); | |
4146 | return strcmp (IDENTIFIER_POINTER (n1), (const char *) x2) == 0; | |
4147 | } | |
4148 | ||
4149 | struct module_htab_entry * | |
4150 | gfc_find_module (const char *name) | |
4151 | { | |
4152 | void **slot; | |
4153 | ||
4154 | if (! module_htab) | |
4155 | module_htab = htab_create_ggc (10, module_htab_do_hash, | |
4156 | module_htab_eq, NULL); | |
4157 | ||
4158 | slot = htab_find_slot_with_hash (module_htab, name, | |
4159 | htab_hash_string (name), INSERT); | |
4160 | if (*slot == NULL) | |
4161 | { | |
25a27413 | 4162 | module_htab_entry *entry = ggc_cleared_alloc<module_htab_entry> (); |
df4d540f | 4163 | |
4164 | entry->name = gfc_get_string (name); | |
4165 | entry->decls = htab_create_ggc (10, module_htab_decls_hash, | |
4166 | module_htab_decls_eq, NULL); | |
4167 | *slot = (void *) entry; | |
4168 | } | |
4169 | return (struct module_htab_entry *) *slot; | |
4170 | } | |
4171 | ||
4172 | void | |
4173 | gfc_module_add_decl (struct module_htab_entry *entry, tree decl) | |
4174 | { | |
4175 | void **slot; | |
4176 | const char *name; | |
4177 | ||
4178 | if (DECL_NAME (decl)) | |
4179 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
4180 | else | |
4181 | { | |
4182 | gcc_assert (TREE_CODE (decl) == TYPE_DECL); | |
4183 | name = IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))); | |
4184 | } | |
4185 | slot = htab_find_slot_with_hash (entry->decls, name, | |
4186 | htab_hash_string (name), INSERT); | |
4187 | if (*slot == NULL) | |
4188 | *slot = (void *) decl; | |
4189 | } | |
4190 | ||
4191 | static struct module_htab_entry *cur_module; | |
4ee9c684 | 4192 | |
c40a5c1b | 4193 | |
4194 | /* Generate debugging symbols for namelists. This function must come after | |
4195 | generate_local_decl to ensure that the variables in the namelist are | |
4196 | already declared. */ | |
4197 | ||
4198 | static tree | |
4199 | generate_namelist_decl (gfc_symbol * sym) | |
4200 | { | |
4201 | gfc_namelist *nml; | |
4202 | tree decl; | |
4203 | vec<constructor_elt, va_gc> *nml_decls = NULL; | |
4204 | ||
4205 | gcc_assert (sym->attr.flavor == FL_NAMELIST); | |
4206 | for (nml = sym->namelist; nml; nml = nml->next) | |
4207 | { | |
4208 | if (nml->sym->backend_decl == NULL_TREE) | |
4209 | { | |
4210 | nml->sym->attr.referenced = 1; | |
4211 | nml->sym->backend_decl = gfc_get_symbol_decl (nml->sym); | |
4212 | } | |
0a32260c | 4213 | DECL_IGNORED_P (nml->sym->backend_decl) = 0; |
c40a5c1b | 4214 | CONSTRUCTOR_APPEND_ELT (nml_decls, NULL_TREE, nml->sym->backend_decl); |
4215 | } | |
4216 | ||
4217 | decl = make_node (NAMELIST_DECL); | |
4218 | TREE_TYPE (decl) = void_type_node; | |
4219 | NAMELIST_DECL_ASSOCIATED_DECL (decl) = build_constructor (NULL_TREE, nml_decls); | |
4220 | DECL_NAME (decl) = get_identifier (sym->name); | |
4221 | return decl; | |
4222 | } | |
4223 | ||
4224 | ||
4ee9c684 | 4225 | /* Output an initialized decl for a module variable. */ |
4226 | ||
4227 | static void | |
4228 | gfc_create_module_variable (gfc_symbol * sym) | |
4229 | { | |
4230 | tree decl; | |
4ee9c684 | 4231 | |
d77f260f | 4232 | /* Module functions with alternate entries are dealt with later and |
4233 | would get caught by the next condition. */ | |
4234 | if (sym->attr.entry) | |
4235 | return; | |
4236 | ||
c5d33754 | 4237 | /* Make sure we convert the types of the derived types from iso_c_binding |
4238 | into (void *). */ | |
4239 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
4240 | && sym->ts.type == BT_DERIVED) | |
4241 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
4242 | ||
df4d540f | 4243 | if (sym->attr.flavor == FL_DERIVED |
4244 | && sym->backend_decl | |
4245 | && TREE_CODE (sym->backend_decl) == RECORD_TYPE) | |
4246 | { | |
4247 | decl = sym->backend_decl; | |
4248 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
9f1470cb | 4249 | |
044bbd71 | 4250 | if (!sym->attr.use_assoc) |
9f1470cb | 4251 | { |
4252 | gcc_assert (TYPE_CONTEXT (decl) == NULL_TREE | |
4253 | || TYPE_CONTEXT (decl) == sym->ns->proc_name->backend_decl); | |
4254 | gcc_assert (DECL_CONTEXT (TYPE_STUB_DECL (decl)) == NULL_TREE | |
4255 | || DECL_CONTEXT (TYPE_STUB_DECL (decl)) | |
4256 | == sym->ns->proc_name->backend_decl); | |
4257 | } | |
df4d540f | 4258 | TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl; |
4259 | DECL_CONTEXT (TYPE_STUB_DECL (decl)) = sym->ns->proc_name->backend_decl; | |
4260 | gfc_module_add_decl (cur_module, TYPE_STUB_DECL (decl)); | |
4261 | } | |
4262 | ||
cf269acc | 4263 | /* Only output variables, procedure pointers and array valued, |
4264 | or derived type, parameters. */ | |
4ee9c684 | 4265 | if (sym->attr.flavor != FL_VARIABLE |
be0f1581 | 4266 | && !(sym->attr.flavor == FL_PARAMETER |
cf269acc | 4267 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) |
4268 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.proc_pointer)) | |
4ee9c684 | 4269 | return; |
4270 | ||
df4d540f | 4271 | if ((sym->attr.in_common || sym->attr.in_equivalence) && sym->backend_decl) |
4272 | { | |
4273 | decl = sym->backend_decl; | |
16a40513 | 4274 | gcc_assert (DECL_FILE_SCOPE_P (decl)); |
df4d540f | 4275 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); |
4276 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4277 | gfc_module_add_decl (cur_module, decl); | |
4278 | } | |
4279 | ||
d43a7f7f | 4280 | /* Don't generate variables from other modules. Variables from |
4281 | COMMONs will already have been generated. */ | |
4282 | if (sym->attr.use_assoc || sym->attr.in_common) | |
4ee9c684 | 4283 | return; |
4284 | ||
2b685f8e | 4285 | /* Equivalenced variables arrive here after creation. */ |
976d903a | 4286 | if (sym->backend_decl |
df4d540f | 4287 | && (sym->equiv_built || sym->attr.in_equivalence)) |
4288 | return; | |
2b685f8e | 4289 | |
23d075f4 | 4290 | if (sym->backend_decl && !sym->attr.vtab && !sym->attr.target) |
4ee9c684 | 4291 | internal_error ("backend decl for module variable %s already exists", |
4292 | sym->name); | |
4293 | ||
92983bfd | 4294 | if (sym->module && !sym->attr.result && !sym->attr.dummy |
4295 | && (sym->attr.access == ACCESS_UNKNOWN | |
4296 | && (sym->ns->default_access == ACCESS_PRIVATE | |
4297 | || (sym->ns->default_access == ACCESS_UNKNOWN | |
4298 | && gfc_option.flag_module_private)))) | |
4299 | sym->attr.access = ACCESS_PRIVATE; | |
4300 | ||
4301 | if (warn_unused_variable && !sym->attr.referenced | |
4302 | && sym->attr.access == ACCESS_PRIVATE) | |
4303 | gfc_warning ("Unused PRIVATE module variable '%s' declared at %L", | |
4304 | sym->name, &sym->declared_at); | |
4305 | ||
4ee9c684 | 4306 | /* We always want module variables to be created. */ |
4307 | sym->attr.referenced = 1; | |
4308 | /* Create the decl. */ | |
4309 | decl = gfc_get_symbol_decl (sym); | |
4310 | ||
4ee9c684 | 4311 | /* Create the variable. */ |
4312 | pushdecl (decl); | |
df4d540f | 4313 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); |
4314 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
b2c4af5e | 4315 | rest_of_decl_compilation (decl, 1, 0); |
df4d540f | 4316 | gfc_module_add_decl (cur_module, decl); |
4ee9c684 | 4317 | |
4318 | /* Also add length of strings. */ | |
4319 | if (sym->ts.type == BT_CHARACTER) | |
4320 | { | |
4321 | tree length; | |
4322 | ||
eeebe20b | 4323 | length = sym->ts.u.cl->backend_decl; |
cf4b41d8 | 4324 | gcc_assert (length || sym->attr.proc_pointer); |
4325 | if (length && !INTEGER_CST_P (length)) | |
4ee9c684 | 4326 | { |
4327 | pushdecl (length); | |
b2c4af5e | 4328 | rest_of_decl_compilation (length, 1, 0); |
4ee9c684 | 4329 | } |
4330 | } | |
a961ca30 | 4331 | |
4332 | if (sym->attr.codimension && !sym->attr.dummy && !sym->attr.allocatable | |
4333 | && sym->attr.referenced && !sym->attr.use_assoc) | |
4334 | has_coarray_vars = true; | |
4ee9c684 | 4335 | } |
4336 | ||
51d9479b | 4337 | /* Emit debug information for USE statements. */ |
df4d540f | 4338 | |
4339 | static void | |
4340 | gfc_trans_use_stmts (gfc_namespace * ns) | |
4341 | { | |
4342 | gfc_use_list *use_stmt; | |
4343 | for (use_stmt = ns->use_stmts; use_stmt; use_stmt = use_stmt->next) | |
4344 | { | |
4345 | struct module_htab_entry *entry | |
4346 | = gfc_find_module (use_stmt->module_name); | |
4347 | gfc_use_rename *rent; | |
4348 | ||
4349 | if (entry->namespace_decl == NULL) | |
4350 | { | |
4351 | entry->namespace_decl | |
e60a6f7b | 4352 | = build_decl (input_location, |
4353 | NAMESPACE_DECL, | |
df4d540f | 4354 | get_identifier (use_stmt->module_name), |
4355 | void_type_node); | |
4356 | DECL_EXTERNAL (entry->namespace_decl) = 1; | |
4357 | } | |
51d9479b | 4358 | gfc_set_backend_locus (&use_stmt->where); |
df4d540f | 4359 | if (!use_stmt->only_flag) |
4360 | (*debug_hooks->imported_module_or_decl) (entry->namespace_decl, | |
4361 | NULL_TREE, | |
4362 | ns->proc_name->backend_decl, | |
4363 | false); | |
4364 | for (rent = use_stmt->rename; rent; rent = rent->next) | |
4365 | { | |
4366 | tree decl, local_name; | |
4367 | void **slot; | |
4368 | ||
4369 | if (rent->op != INTRINSIC_NONE) | |
4370 | continue; | |
4371 | ||
4372 | slot = htab_find_slot_with_hash (entry->decls, rent->use_name, | |
4373 | htab_hash_string (rent->use_name), | |
4374 | INSERT); | |
4375 | if (*slot == NULL) | |
4376 | { | |
4377 | gfc_symtree *st; | |
4378 | ||
4379 | st = gfc_find_symtree (ns->sym_root, | |
4380 | rent->local_name[0] | |
4381 | ? rent->local_name : rent->use_name); | |
c2958b6b | 4382 | |
4383 | /* The following can happen if a derived type is renamed. */ | |
4384 | if (!st) | |
4385 | { | |
4386 | char *name; | |
4387 | name = xstrdup (rent->local_name[0] | |
4388 | ? rent->local_name : rent->use_name); | |
4389 | name[0] = (char) TOUPPER ((unsigned char) name[0]); | |
4390 | st = gfc_find_symtree (ns->sym_root, name); | |
4391 | free (name); | |
4392 | gcc_assert (st); | |
4393 | } | |
857c96ba | 4394 | |
4395 | /* Sometimes, generic interfaces wind up being over-ruled by a | |
4396 | local symbol (see PR41062). */ | |
4397 | if (!st->n.sym->attr.use_assoc) | |
4398 | continue; | |
4399 | ||
51d9479b | 4400 | if (st->n.sym->backend_decl |
4401 | && DECL_P (st->n.sym->backend_decl) | |
4402 | && st->n.sym->module | |
4403 | && strcmp (st->n.sym->module, use_stmt->module_name) == 0) | |
df4d540f | 4404 | { |
51d9479b | 4405 | gcc_assert (DECL_EXTERNAL (entry->namespace_decl) |
4406 | || (TREE_CODE (st->n.sym->backend_decl) | |
4407 | != VAR_DECL)); | |
df4d540f | 4408 | decl = copy_node (st->n.sym->backend_decl); |
4409 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
4410 | DECL_EXTERNAL (decl) = 1; | |
4411 | DECL_IGNORED_P (decl) = 0; | |
4412 | DECL_INITIAL (decl) = NULL_TREE; | |
4413 | } | |
c40a5c1b | 4414 | else if (st->n.sym->attr.flavor == FL_NAMELIST |
4415 | && st->n.sym->attr.use_only | |
4416 | && st->n.sym->module | |
4417 | && strcmp (st->n.sym->module, use_stmt->module_name) | |
4418 | == 0) | |
4419 | { | |
4420 | decl = generate_namelist_decl (st->n.sym); | |
4421 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
4422 | DECL_EXTERNAL (decl) = 1; | |
4423 | DECL_IGNORED_P (decl) = 0; | |
4424 | DECL_INITIAL (decl) = NULL_TREE; | |
4425 | } | |
df4d540f | 4426 | else |
4427 | { | |
4428 | *slot = error_mark_node; | |
4429 | htab_clear_slot (entry->decls, slot); | |
4430 | continue; | |
4431 | } | |
4432 | *slot = decl; | |
4433 | } | |
4434 | decl = (tree) *slot; | |
4435 | if (rent->local_name[0]) | |
4436 | local_name = get_identifier (rent->local_name); | |
4437 | else | |
4438 | local_name = NULL_TREE; | |
51d9479b | 4439 | gfc_set_backend_locus (&rent->where); |
df4d540f | 4440 | (*debug_hooks->imported_module_or_decl) (decl, local_name, |
4441 | ns->proc_name->backend_decl, | |
4442 | !use_stmt->only_flag); | |
4443 | } | |
4444 | } | |
4ee9c684 | 4445 | } |
4446 | ||
51d9479b | 4447 | |
2eb674c9 | 4448 | /* Return true if expr is a constant initializer that gfc_conv_initializer |
4449 | will handle. */ | |
4450 | ||
4451 | static bool | |
4452 | check_constant_initializer (gfc_expr *expr, gfc_typespec *ts, bool array, | |
4453 | bool pointer) | |
4454 | { | |
4455 | gfc_constructor *c; | |
4456 | gfc_component *cm; | |
4457 | ||
4458 | if (pointer) | |
4459 | return true; | |
4460 | else if (array) | |
4461 | { | |
4462 | if (expr->expr_type == EXPR_CONSTANT || expr->expr_type == EXPR_NULL) | |
4463 | return true; | |
4464 | else if (expr->expr_type == EXPR_STRUCTURE) | |
4465 | return check_constant_initializer (expr, ts, false, false); | |
4466 | else if (expr->expr_type != EXPR_ARRAY) | |
4467 | return false; | |
126387b5 | 4468 | for (c = gfc_constructor_first (expr->value.constructor); |
4469 | c; c = gfc_constructor_next (c)) | |
2eb674c9 | 4470 | { |
4471 | if (c->iterator) | |
4472 | return false; | |
4473 | if (c->expr->expr_type == EXPR_STRUCTURE) | |
4474 | { | |
4475 | if (!check_constant_initializer (c->expr, ts, false, false)) | |
4476 | return false; | |
4477 | } | |
4478 | else if (c->expr->expr_type != EXPR_CONSTANT) | |
4479 | return false; | |
4480 | } | |
4481 | return true; | |
4482 | } | |
4483 | else switch (ts->type) | |
4484 | { | |
4485 | case BT_DERIVED: | |
4486 | if (expr->expr_type != EXPR_STRUCTURE) | |
4487 | return false; | |
eeebe20b | 4488 | cm = expr->ts.u.derived->components; |
126387b5 | 4489 | for (c = gfc_constructor_first (expr->value.constructor); |
4490 | c; c = gfc_constructor_next (c), cm = cm->next) | |
2eb674c9 | 4491 | { |
4492 | if (!c->expr || cm->attr.allocatable) | |
4493 | continue; | |
4494 | if (!check_constant_initializer (c->expr, &cm->ts, | |
4495 | cm->attr.dimension, | |
4496 | cm->attr.pointer)) | |
4497 | return false; | |
4498 | } | |
4499 | return true; | |
4500 | default: | |
4501 | return expr->expr_type == EXPR_CONSTANT; | |
4502 | } | |
4503 | } | |
4504 | ||
4505 | /* Emit debug info for parameters and unreferenced variables with | |
4506 | initializers. */ | |
4507 | ||
4508 | static void | |
4509 | gfc_emit_parameter_debug_info (gfc_symbol *sym) | |
4510 | { | |
4511 | tree decl; | |
4512 | ||
4513 | if (sym->attr.flavor != FL_PARAMETER | |
4514 | && (sym->attr.flavor != FL_VARIABLE || sym->attr.referenced)) | |
4515 | return; | |
4516 | ||
4517 | if (sym->backend_decl != NULL | |
4518 | || sym->value == NULL | |
4519 | || sym->attr.use_assoc | |
4520 | || sym->attr.dummy | |
4521 | || sym->attr.result | |
4522 | || sym->attr.function | |
4523 | || sym->attr.intrinsic | |
4524 | || sym->attr.pointer | |
4525 | || sym->attr.allocatable | |
4526 | || sym->attr.cray_pointee | |
4527 | || sym->attr.threadprivate | |
4528 | || sym->attr.is_bind_c | |
4529 | || sym->attr.subref_array_pointer | |
4530 | || sym->attr.assign) | |
4531 | return; | |
4532 | ||
4533 | if (sym->ts.type == BT_CHARACTER) | |
4534 | { | |
eeebe20b | 4535 | gfc_conv_const_charlen (sym->ts.u.cl); |
4536 | if (sym->ts.u.cl->backend_decl == NULL | |
4537 | || TREE_CODE (sym->ts.u.cl->backend_decl) != INTEGER_CST) | |
2eb674c9 | 4538 | return; |
4539 | } | |
eeebe20b | 4540 | else if (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
2eb674c9 | 4541 | return; |
4542 | ||
4543 | if (sym->as) | |
4544 | { | |
4545 | int n; | |
4546 | ||
4547 | if (sym->as->type != AS_EXPLICIT) | |
4548 | return; | |
4549 | for (n = 0; n < sym->as->rank; n++) | |
4550 | if (sym->as->lower[n]->expr_type != EXPR_CONSTANT | |
4551 | || sym->as->upper[n] == NULL | |
4552 | || sym->as->upper[n]->expr_type != EXPR_CONSTANT) | |
4553 | return; | |
4554 | } | |
4555 | ||
4556 | if (!check_constant_initializer (sym->value, &sym->ts, | |
4557 | sym->attr.dimension, false)) | |
4558 | return; | |
4559 | ||
a961ca30 | 4560 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && sym->attr.codimension) |
4561 | return; | |
4562 | ||
2eb674c9 | 4563 | /* Create the decl for the variable or constant. */ |
e60a6f7b | 4564 | decl = build_decl (input_location, |
4565 | sym->attr.flavor == FL_PARAMETER ? CONST_DECL : VAR_DECL, | |
2eb674c9 | 4566 | gfc_sym_identifier (sym), gfc_sym_type (sym)); |
4567 | if (sym->attr.flavor == FL_PARAMETER) | |
4568 | TREE_READONLY (decl) = 1; | |
4569 | gfc_set_decl_location (decl, &sym->declared_at); | |
4570 | if (sym->attr.dimension) | |
4571 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
4572 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4573 | TREE_STATIC (decl) = 1; | |
4574 | TREE_USED (decl) = 1; | |
4575 | if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
4576 | TREE_PUBLIC (decl) = 1; | |
802532b9 | 4577 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
4578 | TREE_TYPE (decl), | |
4579 | sym->attr.dimension, | |
4580 | false, false); | |
2eb674c9 | 4581 | debug_hooks->global_decl (decl); |
4582 | } | |
4583 | ||
a961ca30 | 4584 | |
4585 | static void | |
4586 | generate_coarray_sym_init (gfc_symbol *sym) | |
4587 | { | |
4588 | tree tmp, size, decl, token; | |
4589 | ||
4590 | if (sym->attr.dummy || sym->attr.allocatable || !sym->attr.codimension | |
a90fe829 | 4591 | || sym->attr.use_assoc || !sym->attr.referenced) |
a961ca30 | 4592 | return; |
4593 | ||
4594 | decl = sym->backend_decl; | |
4595 | TREE_USED(decl) = 1; | |
4596 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (decl))); | |
4597 | ||
4598 | /* FIXME: Workaround for PR middle-end/49106, cf. also PR middle-end/49108 | |
4599 | to make sure the variable is not optimized away. */ | |
4600 | DECL_PRESERVE_P (DECL_CONTEXT (decl)) = 1; | |
4601 | ||
4602 | size = TYPE_SIZE_UNIT (gfc_get_element_type (TREE_TYPE (decl))); | |
4603 | ||
a90fe829 | 4604 | /* Ensure that we do not have size=0 for zero-sized arrays. */ |
ee4e7a5e | 4605 | size = fold_build2_loc (input_location, MAX_EXPR, size_type_node, |
4606 | fold_convert (size_type_node, size), | |
4607 | build_int_cst (size_type_node, 1)); | |
4608 | ||
a961ca30 | 4609 | if (GFC_TYPE_ARRAY_RANK (TREE_TYPE (decl))) |
4610 | { | |
4611 | tmp = GFC_TYPE_ARRAY_SIZE (TREE_TYPE (decl)); | |
4612 | size = fold_build2_loc (input_location, MULT_EXPR, size_type_node, | |
ee4e7a5e | 4613 | fold_convert (size_type_node, tmp), size); |
a961ca30 | 4614 | } |
4615 | ||
4616 | gcc_assert (GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE (decl)) != NULL_TREE); | |
4617 | token = gfc_build_addr_expr (ppvoid_type_node, | |
4618 | GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE(decl))); | |
4619 | ||
4620 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_register, 6, size, | |
7b186db6 | 4621 | build_int_cst (integer_type_node, |
4f5fe475 | 4622 | GFC_CAF_COARRAY_STATIC), /* type. */ |
a961ca30 | 4623 | token, null_pointer_node, /* token, stat. */ |
4624 | null_pointer_node, /* errgmsg, errmsg_len. */ | |
4625 | build_int_cst (integer_type_node, 0)); | |
a90fe829 | 4626 | |
a961ca30 | 4627 | gfc_add_modify (&caf_init_block, decl, fold_convert (TREE_TYPE (decl), tmp)); |
4628 | ||
4629 | ||
4630 | /* Handle "static" initializer. */ | |
4631 | if (sym->value) | |
4632 | { | |
4633 | sym->attr.pointer = 1; | |
4634 | tmp = gfc_trans_assignment (gfc_lval_expr_from_sym (sym), sym->value, | |
4635 | true, false); | |
4636 | sym->attr.pointer = 0; | |
4637 | gfc_add_expr_to_block (&caf_init_block, tmp); | |
4638 | } | |
4639 | } | |
4640 | ||
4641 | ||
4642 | /* Generate constructor function to initialize static, nonallocatable | |
4643 | coarrays. */ | |
4644 | ||
4645 | static void | |
4646 | generate_coarray_init (gfc_namespace * ns __attribute((unused))) | |
4647 | { | |
4648 | tree fndecl, tmp, decl, save_fn_decl; | |
4649 | ||
4650 | save_fn_decl = current_function_decl; | |
4651 | push_function_context (); | |
4652 | ||
4653 | tmp = build_function_type_list (void_type_node, NULL_TREE); | |
4654 | fndecl = build_decl (input_location, FUNCTION_DECL, | |
4655 | create_tmp_var_name ("_caf_init"), tmp); | |
4656 | ||
4657 | DECL_STATIC_CONSTRUCTOR (fndecl) = 1; | |
4658 | SET_DECL_INIT_PRIORITY (fndecl, DEFAULT_INIT_PRIORITY); | |
4659 | ||
4660 | decl = build_decl (input_location, RESULT_DECL, NULL_TREE, void_type_node); | |
4661 | DECL_ARTIFICIAL (decl) = 1; | |
4662 | DECL_IGNORED_P (decl) = 1; | |
4663 | DECL_CONTEXT (decl) = fndecl; | |
4664 | DECL_RESULT (fndecl) = decl; | |
4665 | ||
4666 | pushdecl (fndecl); | |
4667 | current_function_decl = fndecl; | |
4668 | announce_function (fndecl); | |
4669 | ||
4670 | rest_of_decl_compilation (fndecl, 0, 0); | |
4671 | make_decl_rtl (fndecl); | |
00cf115c | 4672 | allocate_struct_function (fndecl, false); |
a961ca30 | 4673 | |
cde2be84 | 4674 | pushlevel (); |
a961ca30 | 4675 | gfc_init_block (&caf_init_block); |
4676 | ||
4677 | gfc_traverse_ns (ns, generate_coarray_sym_init); | |
4678 | ||
4679 | DECL_SAVED_TREE (fndecl) = gfc_finish_block (&caf_init_block); | |
4680 | decl = getdecls (); | |
4681 | ||
cde2be84 | 4682 | poplevel (1, 1); |
a961ca30 | 4683 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; |
4684 | ||
4685 | DECL_SAVED_TREE (fndecl) | |
4686 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
4687 | DECL_INITIAL (fndecl)); | |
4688 | dump_function (TDI_original, fndecl); | |
4689 | ||
4690 | cfun->function_end_locus = input_location; | |
4691 | set_cfun (NULL); | |
4692 | ||
4693 | if (decl_function_context (fndecl)) | |
4694 | (void) cgraph_create_node (fndecl); | |
4695 | else | |
4696 | cgraph_finalize_function (fndecl, true); | |
4697 | ||
4698 | pop_function_context (); | |
4699 | current_function_decl = save_fn_decl; | |
4700 | } | |
4701 | ||
4702 | ||
c40a5c1b | 4703 | static void |
4704 | create_module_nml_decl (gfc_symbol *sym) | |
4705 | { | |
4706 | if (sym->attr.flavor == FL_NAMELIST) | |
4707 | { | |
4708 | tree decl = generate_namelist_decl (sym); | |
4709 | pushdecl (decl); | |
4710 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
4711 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4712 | rest_of_decl_compilation (decl, 1, 0); | |
4713 | gfc_module_add_decl (cur_module, decl); | |
4714 | } | |
4715 | } | |
4716 | ||
4717 | ||
51d9479b | 4718 | /* Generate all the required code for module variables. */ |
4719 | ||
4720 | void | |
4721 | gfc_generate_module_vars (gfc_namespace * ns) | |
4722 | { | |
4723 | module_namespace = ns; | |
4724 | cur_module = gfc_find_module (ns->proc_name->name); | |
4725 | ||
4726 | /* Check if the frontend left the namespace in a reasonable state. */ | |
4727 | gcc_assert (ns->proc_name && !ns->proc_name->tlink); | |
4728 | ||
4729 | /* Generate COMMON blocks. */ | |
4730 | gfc_trans_common (ns); | |
4731 | ||
a961ca30 | 4732 | has_coarray_vars = false; |
4733 | ||
51d9479b | 4734 | /* Create decls for all the module variables. */ |
4735 | gfc_traverse_ns (ns, gfc_create_module_variable); | |
c40a5c1b | 4736 | gfc_traverse_ns (ns, create_module_nml_decl); |
51d9479b | 4737 | |
a961ca30 | 4738 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
4739 | generate_coarray_init (ns); | |
4740 | ||
51d9479b | 4741 | cur_module = NULL; |
4742 | ||
4743 | gfc_trans_use_stmts (ns); | |
2eb674c9 | 4744 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
51d9479b | 4745 | } |
4746 | ||
4747 | ||
4ee9c684 | 4748 | static void |
4749 | gfc_generate_contained_functions (gfc_namespace * parent) | |
4750 | { | |
4751 | gfc_namespace *ns; | |
4752 | ||
4753 | /* We create all the prototypes before generating any code. */ | |
4754 | for (ns = parent->contained; ns; ns = ns->sibling) | |
4755 | { | |
4756 | /* Skip namespaces from used modules. */ | |
4757 | if (ns->parent != parent) | |
4758 | continue; | |
4759 | ||
d896f9b3 | 4760 | gfc_create_function_decl (ns, false); |
4ee9c684 | 4761 | } |
4762 | ||
4763 | for (ns = parent->contained; ns; ns = ns->sibling) | |
4764 | { | |
4765 | /* Skip namespaces from used modules. */ | |
4766 | if (ns->parent != parent) | |
4767 | continue; | |
4768 | ||
4769 | gfc_generate_function_code (ns); | |
4770 | } | |
4771 | } | |
4772 | ||
4773 | ||
d95efb59 | 4774 | /* Drill down through expressions for the array specification bounds and |
4775 | character length calling generate_local_decl for all those variables | |
4776 | that have not already been declared. */ | |
4777 | ||
4778 | static void | |
4779 | generate_local_decl (gfc_symbol *); | |
4780 | ||
1acb400a | 4781 | /* Traverse expr, marking all EXPR_VARIABLE symbols referenced. */ |
d95efb59 | 4782 | |
1acb400a | 4783 | static bool |
4784 | expr_decls (gfc_expr *e, gfc_symbol *sym, | |
4785 | int *f ATTRIBUTE_UNUSED) | |
4786 | { | |
4787 | if (e->expr_type != EXPR_VARIABLE | |
4788 | || sym == e->symtree->n.sym | |
d95efb59 | 4789 | || e->symtree->n.sym->mark |
4790 | || e->symtree->n.sym->ns != sym->ns) | |
1acb400a | 4791 | return false; |
d95efb59 | 4792 | |
1acb400a | 4793 | generate_local_decl (e->symtree->n.sym); |
4794 | return false; | |
4795 | } | |
d95efb59 | 4796 | |
1acb400a | 4797 | static void |
4798 | generate_expr_decls (gfc_symbol *sym, gfc_expr *e) | |
4799 | { | |
4800 | gfc_traverse_expr (e, sym, expr_decls, 0); | |
d95efb59 | 4801 | } |
4802 | ||
4803 | ||
f6d0e37a | 4804 | /* Check for dependencies in the character length and array spec. */ |
d95efb59 | 4805 | |
4806 | static void | |
4807 | generate_dependency_declarations (gfc_symbol *sym) | |
4808 | { | |
4809 | int i; | |
4810 | ||
4811 | if (sym->ts.type == BT_CHARACTER | |
eeebe20b | 4812 | && sym->ts.u.cl |
4813 | && sym->ts.u.cl->length | |
4814 | && sym->ts.u.cl->length->expr_type != EXPR_CONSTANT) | |
4815 | generate_expr_decls (sym, sym->ts.u.cl->length); | |
d95efb59 | 4816 | |
4817 | if (sym->as && sym->as->rank) | |
4818 | { | |
4819 | for (i = 0; i < sym->as->rank; i++) | |
4820 | { | |
4821 | generate_expr_decls (sym, sym->as->lower[i]); | |
4822 | generate_expr_decls (sym, sym->as->upper[i]); | |
4823 | } | |
4824 | } | |
4825 | } | |
4826 | ||
4827 | ||
4ee9c684 | 4828 | /* Generate decls for all local variables. We do this to ensure correct |
4829 | handling of expressions which only appear in the specification of | |
4830 | other functions. */ | |
4831 | ||
4832 | static void | |
4833 | generate_local_decl (gfc_symbol * sym) | |
4834 | { | |
4835 | if (sym->attr.flavor == FL_VARIABLE) | |
4836 | { | |
a961ca30 | 4837 | if (sym->attr.codimension && !sym->attr.dummy && !sym->attr.allocatable |
4838 | && sym->attr.referenced && !sym->attr.use_assoc) | |
4839 | has_coarray_vars = true; | |
4840 | ||
d95efb59 | 4841 | if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master) |
8714fc76 | 4842 | generate_dependency_declarations (sym); |
d95efb59 | 4843 | |
4ee9c684 | 4844 | if (sym->attr.referenced) |
8714fc76 | 4845 | gfc_get_symbol_decl (sym); |
4acad347 | 4846 | |
4847 | /* Warnings for unused dummy arguments. */ | |
6992b8c8 | 4848 | else if (sym->attr.dummy && !sym->attr.in_namelist) |
7c0ca46e | 4849 | { |
4acad347 | 4850 | /* INTENT(out) dummy arguments are likely meant to be set. */ |
4851 | if (gfc_option.warn_unused_dummy_argument | |
4852 | && sym->attr.intent == INTENT_OUT) | |
4853 | { | |
4854 | if (sym->ts.type != BT_DERIVED) | |
4855 | gfc_warning ("Dummy argument '%s' at %L was declared " | |
4856 | "INTENT(OUT) but was not set", sym->name, | |
4857 | &sym->declared_at); | |
48cb4748 | 4858 | else if (!gfc_has_default_initializer (sym->ts.u.derived) |
4859 | && !sym->ts.u.derived->attr.zero_comp) | |
4acad347 | 4860 | gfc_warning ("Derived-type dummy argument '%s' at %L was " |
4861 | "declared INTENT(OUT) but was not set and " | |
4862 | "does not have a default initializer", | |
4863 | sym->name, &sym->declared_at); | |
90a4a5a6 | 4864 | if (sym->backend_decl != NULL_TREE) |
4865 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4acad347 | 4866 | } |
4867 | else if (gfc_option.warn_unused_dummy_argument) | |
90a4a5a6 | 4868 | { |
4869 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, | |
4acad347 | 4870 | &sym->declared_at); |
90a4a5a6 | 4871 | if (sym->backend_decl != NULL_TREE) |
4872 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4873 | } | |
7c0ca46e | 4874 | } |
4acad347 | 4875 | |
f888a3fb | 4876 | /* Warn for unused variables, but not if they're inside a common |
1dbfac29 | 4877 | block or a namelist. */ |
36609028 | 4878 | else if (warn_unused_variable |
1dbfac29 | 4879 | && !(sym->attr.in_common || sym->mark || sym->attr.in_namelist)) |
90a4a5a6 | 4880 | { |
1dbfac29 | 4881 | if (sym->attr.use_only) |
4882 | { | |
4883 | gfc_warning ("Unused module variable '%s' which has been " | |
4884 | "explicitly imported at %L", sym->name, | |
4885 | &sym->declared_at); | |
4886 | if (sym->backend_decl != NULL_TREE) | |
4887 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4888 | } | |
4889 | else if (!sym->attr.use_assoc) | |
4890 | { | |
4891 | gfc_warning ("Unused variable '%s' declared at %L", | |
4892 | sym->name, &sym->declared_at); | |
4893 | if (sym->backend_decl != NULL_TREE) | |
4894 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4895 | } | |
90a4a5a6 | 4896 | } |
8714fc76 | 4897 | |
d4163395 | 4898 | /* For variable length CHARACTER parameters, the PARM_DECL already |
4899 | references the length variable, so force gfc_get_symbol_decl | |
4900 | even when not referenced. If optimize > 0, it will be optimized | |
4901 | away anyway. But do this only after emitting -Wunused-parameter | |
4902 | warning if requested. */ | |
8714fc76 | 4903 | if (sym->attr.dummy && !sym->attr.referenced |
4904 | && sym->ts.type == BT_CHARACTER | |
eeebe20b | 4905 | && sym->ts.u.cl->backend_decl != NULL |
4906 | && TREE_CODE (sym->ts.u.cl->backend_decl) == VAR_DECL) | |
d4163395 | 4907 | { |
4908 | sym->attr.referenced = 1; | |
4909 | gfc_get_symbol_decl (sym); | |
4910 | } | |
76776e6d | 4911 | |
d0163401 | 4912 | /* INTENT(out) dummy arguments and result variables with allocatable |
4913 | components are reset by default and need to be set referenced to | |
4914 | generate the code for nullification and automatic lengths. */ | |
4915 | if (!sym->attr.referenced | |
8714fc76 | 4916 | && sym->ts.type == BT_DERIVED |
eeebe20b | 4917 | && sym->ts.u.derived->attr.alloc_comp |
c49db15e | 4918 | && !sym->attr.pointer |
d0163401 | 4919 | && ((sym->attr.dummy && sym->attr.intent == INTENT_OUT) |
4920 | || | |
4921 | (sym->attr.result && sym != sym->result))) | |
8714fc76 | 4922 | { |
4923 | sym->attr.referenced = 1; | |
4924 | gfc_get_symbol_decl (sym); | |
4925 | } | |
4926 | ||
e72f979a | 4927 | /* Check for dependencies in the array specification and string |
4928 | length, adding the necessary declarations to the function. We | |
4929 | mark the symbol now, as well as in traverse_ns, to prevent | |
4930 | getting stuck in a circular dependency. */ | |
4931 | sym->mark = 1; | |
4ee9c684 | 4932 | } |
5dd246c1 | 4933 | else if (sym->attr.flavor == FL_PARAMETER) |
4934 | { | |
6ecfe89d | 4935 | if (warn_unused_parameter |
f326eb81 | 4936 | && !sym->attr.referenced) |
4937 | { | |
4938 | if (!sym->attr.use_assoc) | |
4939 | gfc_warning ("Unused parameter '%s' declared at %L", sym->name, | |
4940 | &sym->declared_at); | |
4941 | else if (sym->attr.use_only) | |
4942 | gfc_warning ("Unused parameter '%s' which has been explicitly " | |
4943 | "imported at %L", sym->name, &sym->declared_at); | |
4944 | } | |
5dd246c1 | 4945 | } |
fa7b6574 | 4946 | else if (sym->attr.flavor == FL_PROCEDURE) |
4947 | { | |
4948 | /* TODO: move to the appropriate place in resolve.c. */ | |
4949 | if (warn_return_type | |
4950 | && sym->attr.function | |
4951 | && sym->result | |
4952 | && sym != sym->result | |
4953 | && !sym->result->attr.referenced | |
4954 | && !sym->attr.use_assoc | |
4955 | && sym->attr.if_source != IFSRC_IFBODY) | |
4956 | { | |
4957 | gfc_warning ("Return value '%s' of function '%s' declared at " | |
4958 | "%L not set", sym->result->name, sym->name, | |
4959 | &sym->result->declared_at); | |
4960 | ||
4961 | /* Prevents "Unused variable" warning for RESULT variables. */ | |
e72f979a | 4962 | sym->result->mark = 1; |
fa7b6574 | 4963 | } |
4964 | } | |
c5d33754 | 4965 | |
19ba2ad8 | 4966 | if (sym->attr.dummy == 1) |
4967 | { | |
4968 | /* Modify the tree type for scalar character dummy arguments of bind(c) | |
4969 | procedures if they are passed by value. The tree type for them will | |
4970 | be promoted to INTEGER_TYPE for the middle end, which appears to be | |
4971 | what C would do with characters passed by-value. The value attribute | |
4972 | implies the dummy is a scalar. */ | |
4973 | if (sym->attr.value == 1 && sym->backend_decl != NULL | |
4974 | && sym->ts.type == BT_CHARACTER && sym->ts.is_c_interop | |
4975 | && sym->ns->proc_name != NULL && sym->ns->proc_name->attr.is_bind_c) | |
4c47c8b7 | 4976 | gfc_conv_scalar_char_value (sym, NULL, NULL); |
fc6338c7 | 4977 | |
4978 | /* Unused procedure passed as dummy argument. */ | |
4979 | if (sym->attr.flavor == FL_PROCEDURE) | |
4980 | { | |
4981 | if (!sym->attr.referenced) | |
4982 | { | |
4983 | if (gfc_option.warn_unused_dummy_argument) | |
4984 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, | |
a90fe829 | 4985 | &sym->declared_at); |
fc6338c7 | 4986 | } |
4987 | ||
4988 | /* Silence bogus "unused parameter" warnings from the | |
4989 | middle end. */ | |
4990 | if (sym->backend_decl != NULL_TREE) | |
4991 | TREE_NO_WARNING (sym->backend_decl) = 1; | |
4992 | } | |
19ba2ad8 | 4993 | } |
4994 | ||
c5d33754 | 4995 | /* Make sure we convert the types of the derived types from iso_c_binding |
4996 | into (void *). */ | |
4997 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
4998 | && sym->ts.type == BT_DERIVED) | |
4999 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
4ee9c684 | 5000 | } |
5001 | ||
c40a5c1b | 5002 | |
5003 | static void | |
5004 | generate_local_nml_decl (gfc_symbol * sym) | |
5005 | { | |
5006 | if (sym->attr.flavor == FL_NAMELIST && !sym->attr.use_assoc) | |
5007 | { | |
5008 | tree decl = generate_namelist_decl (sym); | |
5009 | pushdecl (decl); | |
5010 | } | |
5011 | } | |
5012 | ||
5013 | ||
4ee9c684 | 5014 | static void |
5015 | generate_local_vars (gfc_namespace * ns) | |
5016 | { | |
5017 | gfc_traverse_ns (ns, generate_local_decl); | |
c40a5c1b | 5018 | gfc_traverse_ns (ns, generate_local_nml_decl); |
4ee9c684 | 5019 | } |
5020 | ||
5021 | ||
1b716045 | 5022 | /* Generate a switch statement to jump to the correct entry point. Also |
5023 | creates the label decls for the entry points. */ | |
4ee9c684 | 5024 | |
1b716045 | 5025 | static tree |
5026 | gfc_trans_entry_master_switch (gfc_entry_list * el) | |
4ee9c684 | 5027 | { |
1b716045 | 5028 | stmtblock_t block; |
5029 | tree label; | |
5030 | tree tmp; | |
5031 | tree val; | |
4ee9c684 | 5032 | |
1b716045 | 5033 | gfc_init_block (&block); |
5034 | for (; el; el = el->next) | |
5035 | { | |
5036 | /* Add the case label. */ | |
b797d6d3 | 5037 | label = gfc_build_label_decl (NULL_TREE); |
7016c612 | 5038 | val = build_int_cst (gfc_array_index_type, el->id); |
b6e3dd65 | 5039 | tmp = build_case_label (val, NULL_TREE, label); |
1b716045 | 5040 | gfc_add_expr_to_block (&block, tmp); |
5b11d932 | 5041 | |
1b716045 | 5042 | /* And jump to the actual entry point. */ |
5043 | label = gfc_build_label_decl (NULL_TREE); | |
1b716045 | 5044 | tmp = build1_v (GOTO_EXPR, label); |
5045 | gfc_add_expr_to_block (&block, tmp); | |
5046 | ||
5047 | /* Save the label decl. */ | |
5048 | el->label = label; | |
5049 | } | |
5050 | tmp = gfc_finish_block (&block); | |
5051 | /* The first argument selects the entry point. */ | |
5052 | val = DECL_ARGUMENTS (current_function_decl); | |
bfb10994 | 5053 | tmp = fold_build3_loc (input_location, SWITCH_EXPR, NULL_TREE, |
5054 | val, tmp, NULL_TREE); | |
1b716045 | 5055 | return tmp; |
4ee9c684 | 5056 | } |
5057 | ||
6374121b | 5058 | |
a4abf8a0 | 5059 | /* Add code to string lengths of actual arguments passed to a function against |
5060 | the expected lengths of the dummy arguments. */ | |
5061 | ||
5062 | static void | |
5063 | add_argument_checking (stmtblock_t *block, gfc_symbol *sym) | |
5064 | { | |
5065 | gfc_formal_arglist *formal; | |
5066 | ||
6777213b | 5067 | for (formal = gfc_sym_get_dummy_args (sym); formal; formal = formal->next) |
517c89e5 | 5068 | if (formal->sym && formal->sym->ts.type == BT_CHARACTER |
6c3000f4 | 5069 | && !formal->sym->ts.deferred) |
a4abf8a0 | 5070 | { |
5071 | enum tree_code comparison; | |
5072 | tree cond; | |
5073 | tree argname; | |
5074 | gfc_symbol *fsym; | |
5075 | gfc_charlen *cl; | |
5076 | const char *message; | |
5077 | ||
5078 | fsym = formal->sym; | |
eeebe20b | 5079 | cl = fsym->ts.u.cl; |
a4abf8a0 | 5080 | |
5081 | gcc_assert (cl); | |
5082 | gcc_assert (cl->passed_length != NULL_TREE); | |
5083 | gcc_assert (cl->backend_decl != NULL_TREE); | |
5084 | ||
5085 | /* For POINTER, ALLOCATABLE and assumed-shape dummy arguments, the | |
5086 | string lengths must match exactly. Otherwise, it is only required | |
be4be771 | 5087 | that the actual string length is *at least* the expected one. |
5088 | Sequence association allows for a mismatch of the string length | |
5089 | if the actual argument is (part of) an array, but only if the | |
5090 | dummy argument is an array. (See "Sequence association" in | |
5091 | Section 12.4.1.4 for F95 and 12.4.1.5 for F2003.) */ | |
517c89e5 | 5092 | if (fsym->attr.pointer || fsym->attr.allocatable |
f00f6dd6 | 5093 | || (fsym->as && (fsym->as->type == AS_ASSUMED_SHAPE |
5094 | || fsym->as->type == AS_ASSUMED_RANK))) | |
a4abf8a0 | 5095 | { |
5096 | comparison = NE_EXPR; | |
5097 | message = _("Actual string length does not match the declared one" | |
5098 | " for dummy argument '%s' (%ld/%ld)"); | |
5099 | } | |
be4be771 | 5100 | else if (fsym->as && fsym->as->rank != 0) |
5101 | continue; | |
a4abf8a0 | 5102 | else |
5103 | { | |
5104 | comparison = LT_EXPR; | |
5105 | message = _("Actual string length is shorter than the declared one" | |
5106 | " for dummy argument '%s' (%ld/%ld)"); | |
5107 | } | |
5108 | ||
5109 | /* Build the condition. For optional arguments, an actual length | |
5110 | of 0 is also acceptable if the associated string is NULL, which | |
5111 | means the argument was not passed. */ | |
fd779e1d | 5112 | cond = fold_build2_loc (input_location, comparison, boolean_type_node, |
5113 | cl->passed_length, cl->backend_decl); | |
a4abf8a0 | 5114 | if (fsym->attr.optional) |
5115 | { | |
5116 | tree not_absent; | |
5117 | tree not_0length; | |
5118 | tree absent_failed; | |
5119 | ||
fd779e1d | 5120 | not_0length = fold_build2_loc (input_location, NE_EXPR, |
5121 | boolean_type_node, | |
5122 | cl->passed_length, | |
385f3f36 | 5123 | build_zero_cst (gfc_charlen_type_node)); |
5fa0fdc2 | 5124 | /* The symbol needs to be referenced for gfc_get_symbol_decl. */ |
5125 | fsym->attr.referenced = 1; | |
5126 | not_absent = gfc_conv_expr_present (fsym); | |
a4abf8a0 | 5127 | |
fd779e1d | 5128 | absent_failed = fold_build2_loc (input_location, TRUTH_OR_EXPR, |
5129 | boolean_type_node, not_0length, | |
5130 | not_absent); | |
a4abf8a0 | 5131 | |
fd779e1d | 5132 | cond = fold_build2_loc (input_location, TRUTH_AND_EXPR, |
5133 | boolean_type_node, cond, absent_failed); | |
a4abf8a0 | 5134 | } |
5135 | ||
5136 | /* Build the runtime check. */ | |
5137 | argname = gfc_build_cstring_const (fsym->name); | |
5138 | argname = gfc_build_addr_expr (pchar_type_node, argname); | |
5139 | gfc_trans_runtime_check (true, false, cond, block, &fsym->declared_at, | |
5140 | message, argname, | |
5141 | fold_convert (long_integer_type_node, | |
5142 | cl->passed_length), | |
5143 | fold_convert (long_integer_type_node, | |
5144 | cl->backend_decl)); | |
5145 | } | |
5146 | } | |
5147 | ||
5148 | ||
7257a5d2 | 5149 | static void |
5150 | create_main_function (tree fndecl) | |
5151 | { | |
43702da6 | 5152 | tree old_context; |
7257a5d2 | 5153 | tree ftn_main; |
5154 | tree tmp, decl, result_decl, argc, argv, typelist, arglist; | |
5155 | stmtblock_t body; | |
5156 | ||
43702da6 | 5157 | old_context = current_function_decl; |
5158 | ||
5159 | if (old_context) | |
5160 | { | |
5161 | push_function_context (); | |
5162 | saved_parent_function_decls = saved_function_decls; | |
5163 | saved_function_decls = NULL_TREE; | |
5164 | } | |
5165 | ||
7257a5d2 | 5166 | /* main() function must be declared with global scope. */ |
5167 | gcc_assert (current_function_decl == NULL_TREE); | |
5168 | ||
5169 | /* Declare the function. */ | |
5170 | tmp = build_function_type_list (integer_type_node, integer_type_node, | |
5171 | build_pointer_type (pchar_type_node), | |
5172 | NULL_TREE); | |
0509d0ee | 5173 | main_identifier_node = get_identifier ("main"); |
e60a6f7b | 5174 | ftn_main = build_decl (input_location, FUNCTION_DECL, |
5175 | main_identifier_node, tmp); | |
7257a5d2 | 5176 | DECL_EXTERNAL (ftn_main) = 0; |
5177 | TREE_PUBLIC (ftn_main) = 1; | |
5178 | TREE_STATIC (ftn_main) = 1; | |
5179 | DECL_ATTRIBUTES (ftn_main) | |
5180 | = tree_cons (get_identifier("externally_visible"), NULL_TREE, NULL_TREE); | |
5181 | ||
5182 | /* Setup the result declaration (for "return 0"). */ | |
e60a6f7b | 5183 | result_decl = build_decl (input_location, |
5184 | RESULT_DECL, NULL_TREE, integer_type_node); | |
7257a5d2 | 5185 | DECL_ARTIFICIAL (result_decl) = 1; |
5186 | DECL_IGNORED_P (result_decl) = 1; | |
5187 | DECL_CONTEXT (result_decl) = ftn_main; | |
5188 | DECL_RESULT (ftn_main) = result_decl; | |
5189 | ||
5190 | pushdecl (ftn_main); | |
5191 | ||
5192 | /* Get the arguments. */ | |
5193 | ||
5194 | arglist = NULL_TREE; | |
5195 | typelist = TYPE_ARG_TYPES (TREE_TYPE (ftn_main)); | |
5196 | ||
5197 | tmp = TREE_VALUE (typelist); | |
e60a6f7b | 5198 | argc = build_decl (input_location, PARM_DECL, get_identifier ("argc"), tmp); |
7257a5d2 | 5199 | DECL_CONTEXT (argc) = ftn_main; |
5200 | DECL_ARG_TYPE (argc) = TREE_VALUE (typelist); | |
5201 | TREE_READONLY (argc) = 1; | |
5202 | gfc_finish_decl (argc); | |
5203 | arglist = chainon (arglist, argc); | |
5204 | ||
5205 | typelist = TREE_CHAIN (typelist); | |
5206 | tmp = TREE_VALUE (typelist); | |
e60a6f7b | 5207 | argv = build_decl (input_location, PARM_DECL, get_identifier ("argv"), tmp); |
7257a5d2 | 5208 | DECL_CONTEXT (argv) = ftn_main; |
5209 | DECL_ARG_TYPE (argv) = TREE_VALUE (typelist); | |
5210 | TREE_READONLY (argv) = 1; | |
5211 | DECL_BY_REFERENCE (argv) = 1; | |
5212 | gfc_finish_decl (argv); | |
5213 | arglist = chainon (arglist, argv); | |
5214 | ||
5215 | DECL_ARGUMENTS (ftn_main) = arglist; | |
5216 | current_function_decl = ftn_main; | |
5217 | announce_function (ftn_main); | |
5218 | ||
5219 | rest_of_decl_compilation (ftn_main, 1, 0); | |
5220 | make_decl_rtl (ftn_main); | |
00cf115c | 5221 | allocate_struct_function (ftn_main, false); |
cde2be84 | 5222 | pushlevel (); |
7257a5d2 | 5223 | |
5224 | gfc_init_block (&body); | |
5225 | ||
5226 | /* Call some libgfortran initialization routines, call then MAIN__(). */ | |
5227 | ||
d44f2f7c | 5228 | /* Call _gfortran_caf_init (*argc, ***argv). */ |
70b5944a | 5229 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) |
5230 | { | |
5231 | tree pint_type, pppchar_type; | |
5232 | pint_type = build_pointer_type (integer_type_node); | |
5233 | pppchar_type | |
5234 | = build_pointer_type (build_pointer_type (pchar_type_node)); | |
5235 | ||
d44f2f7c | 5236 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_init, 2, |
70b5944a | 5237 | gfc_build_addr_expr (pint_type, argc), |
d44f2f7c | 5238 | gfc_build_addr_expr (pppchar_type, argv)); |
70b5944a | 5239 | gfc_add_expr_to_block (&body, tmp); |
5240 | } | |
5241 | ||
7257a5d2 | 5242 | /* Call _gfortran_set_args (argc, argv). */ |
43702da6 | 5243 | TREE_USED (argc) = 1; |
5244 | TREE_USED (argv) = 1; | |
389dd41b | 5245 | tmp = build_call_expr_loc (input_location, |
5246 | gfor_fndecl_set_args, 2, argc, argv); | |
7257a5d2 | 5247 | gfc_add_expr_to_block (&body, tmp); |
5248 | ||
5249 | /* Add a call to set_options to set up the runtime library Fortran | |
5250 | language standard parameters. */ | |
5251 | { | |
5252 | tree array_type, array, var; | |
f1f41a6c | 5253 | vec<constructor_elt, va_gc> *v = NULL; |
7257a5d2 | 5254 | |
5255 | /* Passing a new option to the library requires four modifications: | |
5256 | + add it to the tree_cons list below | |
5257 | + change the array size in the call to build_array_type | |
5258 | + change the first argument to the library call | |
5259 | gfor_fndecl_set_options | |
5260 | + modify the library (runtime/compile_options.c)! */ | |
5261 | ||
06f13dc1 | 5262 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5263 | build_int_cst (integer_type_node, | |
5264 | gfc_option.warn_std)); | |
5265 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5266 | build_int_cst (integer_type_node, | |
5267 | gfc_option.allow_std)); | |
5268 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5269 | build_int_cst (integer_type_node, pedantic)); | |
b2130263 | 5270 | /* TODO: This is the old -fdump-core option, which is unused but |
5271 | passed due to ABI compatibility; remove when bumping the | |
5272 | library ABI. */ | |
06f13dc1 | 5273 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5274 | build_int_cst (integer_type_node, | |
b2130263 | 5275 | 0)); |
06f13dc1 | 5276 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5277 | build_int_cst (integer_type_node, | |
5278 | gfc_option.flag_backtrace)); | |
5279 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5280 | build_int_cst (integer_type_node, | |
5281 | gfc_option.flag_sign_zero)); | |
5282 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5283 | build_int_cst (integer_type_node, | |
5284 | (gfc_option.rtcheck | |
5285 | & GFC_RTCHECK_BOUNDS))); | |
7f4f15dc | 5286 | /* TODO: This is the -frange-check option, which no longer affects |
5287 | library behavior; when bumping the library ABI this slot can be | |
5288 | reused for something else. As it is the last element in the | |
553e7cef | 5289 | array, we can instead leave it out altogether. */ |
5290 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5291 | build_int_cst (integer_type_node, 0)); | |
06f13dc1 | 5292 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5293 | build_int_cst (integer_type_node, | |
553e7cef | 5294 | gfc_option.fpe_summary)); |
7257a5d2 | 5295 | |
5296 | array_type = build_array_type (integer_type_node, | |
553e7cef | 5297 | build_index_type (size_int (8))); |
06f13dc1 | 5298 | array = build_constructor (array_type, v); |
7257a5d2 | 5299 | TREE_CONSTANT (array) = 1; |
5300 | TREE_STATIC (array) = 1; | |
5301 | ||
5302 | /* Create a static variable to hold the jump table. */ | |
5303 | var = gfc_create_var (array_type, "options"); | |
5304 | TREE_CONSTANT (var) = 1; | |
5305 | TREE_STATIC (var) = 1; | |
5306 | TREE_READONLY (var) = 1; | |
5307 | DECL_INITIAL (var) = array; | |
5308 | var = gfc_build_addr_expr (build_pointer_type (integer_type_node), var); | |
5309 | ||
389dd41b | 5310 | tmp = build_call_expr_loc (input_location, |
5311 | gfor_fndecl_set_options, 2, | |
553e7cef | 5312 | build_int_cst (integer_type_node, 9), var); |
7257a5d2 | 5313 | gfc_add_expr_to_block (&body, tmp); |
5314 | } | |
5315 | ||
5316 | /* If -ffpe-trap option was provided, add a call to set_fpe so that | |
5317 | the library will raise a FPE when needed. */ | |
5318 | if (gfc_option.fpe != 0) | |
5319 | { | |
389dd41b | 5320 | tmp = build_call_expr_loc (input_location, |
5321 | gfor_fndecl_set_fpe, 1, | |
7257a5d2 | 5322 | build_int_cst (integer_type_node, |
5323 | gfc_option.fpe)); | |
5324 | gfc_add_expr_to_block (&body, tmp); | |
5325 | } | |
5326 | ||
5327 | /* If this is the main program and an -fconvert option was provided, | |
5328 | add a call to set_convert. */ | |
5329 | ||
5330 | if (gfc_option.convert != GFC_CONVERT_NATIVE) | |
5331 | { | |
389dd41b | 5332 | tmp = build_call_expr_loc (input_location, |
5333 | gfor_fndecl_set_convert, 1, | |
7257a5d2 | 5334 | build_int_cst (integer_type_node, |
5335 | gfc_option.convert)); | |
5336 | gfc_add_expr_to_block (&body, tmp); | |
5337 | } | |
5338 | ||
5339 | /* If this is the main program and an -frecord-marker option was provided, | |
5340 | add a call to set_record_marker. */ | |
5341 | ||
5342 | if (gfc_option.record_marker != 0) | |
5343 | { | |
389dd41b | 5344 | tmp = build_call_expr_loc (input_location, |
5345 | gfor_fndecl_set_record_marker, 1, | |
7257a5d2 | 5346 | build_int_cst (integer_type_node, |
5347 | gfc_option.record_marker)); | |
5348 | gfc_add_expr_to_block (&body, tmp); | |
5349 | } | |
5350 | ||
5351 | if (gfc_option.max_subrecord_length != 0) | |
5352 | { | |
389dd41b | 5353 | tmp = build_call_expr_loc (input_location, |
5354 | gfor_fndecl_set_max_subrecord_length, 1, | |
7257a5d2 | 5355 | build_int_cst (integer_type_node, |
5356 | gfc_option.max_subrecord_length)); | |
5357 | gfc_add_expr_to_block (&body, tmp); | |
5358 | } | |
5359 | ||
5360 | /* Call MAIN__(). */ | |
389dd41b | 5361 | tmp = build_call_expr_loc (input_location, |
5362 | fndecl, 0); | |
7257a5d2 | 5363 | gfc_add_expr_to_block (&body, tmp); |
5364 | ||
43702da6 | 5365 | /* Mark MAIN__ as used. */ |
5366 | TREE_USED (fndecl) = 1; | |
5367 | ||
70b5944a | 5368 | /* Coarray: Call _gfortran_caf_finalize(void). */ |
5369 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
a90fe829 | 5370 | { |
70b5944a | 5371 | /* Per F2008, 8.5.1 END of the main program implies a |
a90fe829 | 5372 | SYNC MEMORY. */ |
b9a16870 | 5373 | tmp = builtin_decl_explicit (BUILT_IN_SYNC_SYNCHRONIZE); |
70b5944a | 5374 | tmp = build_call_expr_loc (input_location, tmp, 0); |
5375 | gfc_add_expr_to_block (&body, tmp); | |
5376 | ||
5377 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_finalize, 0); | |
5378 | gfc_add_expr_to_block (&body, tmp); | |
5379 | } | |
5380 | ||
7257a5d2 | 5381 | /* "return 0". */ |
fd779e1d | 5382 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, integer_type_node, |
5383 | DECL_RESULT (ftn_main), | |
5384 | build_int_cst (integer_type_node, 0)); | |
7257a5d2 | 5385 | tmp = build1_v (RETURN_EXPR, tmp); |
5386 | gfc_add_expr_to_block (&body, tmp); | |
5387 | ||
5388 | ||
5389 | DECL_SAVED_TREE (ftn_main) = gfc_finish_block (&body); | |
5390 | decl = getdecls (); | |
5391 | ||
5392 | /* Finish off this function and send it for code generation. */ | |
cde2be84 | 5393 | poplevel (1, 1); |
7257a5d2 | 5394 | BLOCK_SUPERCONTEXT (DECL_INITIAL (ftn_main)) = ftn_main; |
5395 | ||
5396 | DECL_SAVED_TREE (ftn_main) | |
5397 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (ftn_main), | |
5398 | DECL_INITIAL (ftn_main)); | |
5399 | ||
5400 | /* Output the GENERIC tree. */ | |
5401 | dump_function (TDI_original, ftn_main); | |
5402 | ||
bb982f66 | 5403 | cgraph_finalize_function (ftn_main, true); |
43702da6 | 5404 | |
5405 | if (old_context) | |
5406 | { | |
5407 | pop_function_context (); | |
5408 | saved_function_decls = saved_parent_function_decls; | |
5409 | } | |
5410 | current_function_decl = old_context; | |
7257a5d2 | 5411 | } |
5412 | ||
5413 | ||
89ac8ba1 | 5414 | /* Get the result expression for a procedure. */ |
5415 | ||
5416 | static tree | |
5417 | get_proc_result (gfc_symbol* sym) | |
5418 | { | |
5419 | if (sym->attr.subroutine || sym == sym->result) | |
5420 | { | |
5421 | if (current_fake_result_decl != NULL) | |
5422 | return TREE_VALUE (current_fake_result_decl); | |
5423 | ||
5424 | return NULL_TREE; | |
5425 | } | |
5426 | ||
5427 | return sym->result->backend_decl; | |
5428 | } | |
5429 | ||
5430 | ||
5431 | /* Generate an appropriate return-statement for a procedure. */ | |
5432 | ||
5433 | tree | |
5434 | gfc_generate_return (void) | |
5435 | { | |
5436 | gfc_symbol* sym; | |
5437 | tree result; | |
5438 | tree fndecl; | |
5439 | ||
5440 | sym = current_procedure_symbol; | |
5441 | fndecl = sym->backend_decl; | |
5442 | ||
5443 | if (TREE_TYPE (DECL_RESULT (fndecl)) == void_type_node) | |
5444 | result = NULL_TREE; | |
5445 | else | |
5446 | { | |
5447 | result = get_proc_result (sym); | |
5448 | ||
5449 | /* Set the return value to the dummy result variable. The | |
5450 | types may be different for scalar default REAL functions | |
5451 | with -ff2c, therefore we have to convert. */ | |
5452 | if (result != NULL_TREE) | |
5453 | { | |
5454 | result = convert (TREE_TYPE (DECL_RESULT (fndecl)), result); | |
fd779e1d | 5455 | result = fold_build2_loc (input_location, MODIFY_EXPR, |
5456 | TREE_TYPE (result), DECL_RESULT (fndecl), | |
5457 | result); | |
89ac8ba1 | 5458 | } |
5459 | } | |
5460 | ||
5461 | return build1_v (RETURN_EXPR, result); | |
5462 | } | |
5463 | ||
5464 | ||
4ee9c684 | 5465 | /* Generate code for a function. */ |
5466 | ||
5467 | void | |
5468 | gfc_generate_function_code (gfc_namespace * ns) | |
5469 | { | |
5470 | tree fndecl; | |
5471 | tree old_context; | |
5472 | tree decl; | |
5473 | tree tmp; | |
89ac8ba1 | 5474 | stmtblock_t init, cleanup; |
4ee9c684 | 5475 | stmtblock_t body; |
89ac8ba1 | 5476 | gfc_wrapped_block try_block; |
5fa0fdc2 | 5477 | tree recurcheckvar = NULL_TREE; |
4ee9c684 | 5478 | gfc_symbol *sym; |
89ac8ba1 | 5479 | gfc_symbol *previous_procedure_symbol; |
2294b616 | 5480 | int rank; |
e50e62f5 | 5481 | bool is_recursive; |
4ee9c684 | 5482 | |
5483 | sym = ns->proc_name; | |
89ac8ba1 | 5484 | previous_procedure_symbol = current_procedure_symbol; |
5485 | current_procedure_symbol = sym; | |
1b716045 | 5486 | |
4ee9c684 | 5487 | /* Check that the frontend isn't still using this. */ |
22d678e8 | 5488 | gcc_assert (sym->tlink == NULL); |
4ee9c684 | 5489 | sym->tlink = sym; |
5490 | ||
5491 | /* Create the declaration for functions with global scope. */ | |
5492 | if (!sym->backend_decl) | |
d896f9b3 | 5493 | gfc_create_function_decl (ns, false); |
4ee9c684 | 5494 | |
5495 | fndecl = sym->backend_decl; | |
5496 | old_context = current_function_decl; | |
5497 | ||
5498 | if (old_context) | |
5499 | { | |
5500 | push_function_context (); | |
5501 | saved_parent_function_decls = saved_function_decls; | |
5502 | saved_function_decls = NULL_TREE; | |
5503 | } | |
5504 | ||
1b716045 | 5505 | trans_function_start (sym); |
4ee9c684 | 5506 | |
89ac8ba1 | 5507 | gfc_init_block (&init); |
4ee9c684 | 5508 | |
c6871095 | 5509 | if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER) |
5510 | { | |
5511 | /* Copy length backend_decls to all entry point result | |
5512 | symbols. */ | |
5513 | gfc_entry_list *el; | |
5514 | tree backend_decl; | |
5515 | ||
eeebe20b | 5516 | gfc_conv_const_charlen (ns->proc_name->ts.u.cl); |
5517 | backend_decl = ns->proc_name->result->ts.u.cl->backend_decl; | |
c6871095 | 5518 | for (el = ns->entries; el; el = el->next) |
eeebe20b | 5519 | el->sym->result->ts.u.cl->backend_decl = backend_decl; |
c6871095 | 5520 | } |
5521 | ||
4ee9c684 | 5522 | /* Translate COMMON blocks. */ |
5523 | gfc_trans_common (ns); | |
5524 | ||
c750cc52 | 5525 | /* Null the parent fake result declaration if this namespace is |
5526 | a module function or an external procedures. */ | |
5527 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
5528 | || ns->parent == NULL) | |
5529 | parent_fake_result_decl = NULL_TREE; | |
5530 | ||
2b685f8e | 5531 | gfc_generate_contained_functions (ns); |
5532 | ||
9579733e | 5533 | nonlocal_dummy_decls = NULL; |
5534 | nonlocal_dummy_decl_pset = NULL; | |
5535 | ||
a961ca30 | 5536 | has_coarray_vars = false; |
4ee9c684 | 5537 | generate_local_vars (ns); |
5b11d932 | 5538 | |
a961ca30 | 5539 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
5540 | generate_coarray_init (ns); | |
5541 | ||
c750cc52 | 5542 | /* Keep the parent fake result declaration in module functions |
5543 | or external procedures. */ | |
5544 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
5545 | || ns->parent == NULL) | |
5546 | current_fake_result_decl = parent_fake_result_decl; | |
5547 | else | |
5548 | current_fake_result_decl = NULL_TREE; | |
5549 | ||
89ac8ba1 | 5550 | is_recursive = sym->attr.recursive |
5551 | || (sym->attr.entry_master | |
5552 | && sym->ns->entries->sym->attr.recursive); | |
5553 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
5554 | && !is_recursive | |
5555 | && !gfc_option.flag_recursive) | |
5556 | { | |
5557 | char * msg; | |
5558 | ||
5559 | asprintf (&msg, "Recursive call to nonrecursive procedure '%s'", | |
5560 | sym->name); | |
5561 | recurcheckvar = gfc_create_var (boolean_type_node, "is_recursive"); | |
5562 | TREE_STATIC (recurcheckvar) = 1; | |
5563 | DECL_INITIAL (recurcheckvar) = boolean_false_node; | |
5564 | gfc_add_expr_to_block (&init, recurcheckvar); | |
5565 | gfc_trans_runtime_check (true, false, recurcheckvar, &init, | |
5566 | &sym->declared_at, msg); | |
5567 | gfc_add_modify (&init, recurcheckvar, boolean_true_node); | |
434f0922 | 5568 | free (msg); |
89ac8ba1 | 5569 | } |
4ee9c684 | 5570 | |
5571 | /* Now generate the code for the body of this function. */ | |
5572 | gfc_init_block (&body); | |
5573 | ||
5574 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node | |
89ac8ba1 | 5575 | && sym->attr.subroutine) |
4ee9c684 | 5576 | { |
5577 | tree alternate_return; | |
c750cc52 | 5578 | alternate_return = gfc_get_fake_result_decl (sym, 0); |
75a70cf9 | 5579 | gfc_add_modify (&body, alternate_return, integer_zero_node); |
4ee9c684 | 5580 | } |
5581 | ||
1b716045 | 5582 | if (ns->entries) |
5583 | { | |
5584 | /* Jump to the correct entry point. */ | |
5585 | tmp = gfc_trans_entry_master_switch (ns->entries); | |
5586 | gfc_add_expr_to_block (&body, tmp); | |
5587 | } | |
5588 | ||
a4abf8a0 | 5589 | /* If bounds-checking is enabled, generate code to check passed in actual |
5590 | arguments against the expected dummy argument attributes (e.g. string | |
5591 | lengths). */ | |
c1630d65 | 5592 | if ((gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) && !sym->attr.is_bind_c) |
a4abf8a0 | 5593 | add_argument_checking (&body, sym); |
5594 | ||
4ee9c684 | 5595 | tmp = gfc_trans_code (ns->code); |
5596 | gfc_add_expr_to_block (&body, tmp); | |
5597 | ||
4ee9c684 | 5598 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node) |
5599 | { | |
89ac8ba1 | 5600 | tree result = get_proc_result (sym); |
4ee9c684 | 5601 | |
42766cb3 | 5602 | if (result != NULL_TREE && sym->attr.function && !sym->attr.pointer) |
2294b616 | 5603 | { |
deb7edfc | 5604 | if (sym->attr.allocatable && sym->attr.dimension == 0 |
5605 | && sym->result == sym) | |
5606 | gfc_add_modify (&init, result, fold_convert (TREE_TYPE (result), | |
5607 | null_pointer_node)); | |
42766cb3 | 5608 | else if (sym->ts.type == BT_CLASS |
5609 | && CLASS_DATA (sym)->attr.allocatable | |
3a19c063 | 5610 | && CLASS_DATA (sym)->attr.dimension == 0 |
5611 | && sym->result == sym) | |
42766cb3 | 5612 | { |
5613 | tmp = CLASS_DATA (sym)->backend_decl; | |
5614 | tmp = fold_build3_loc (input_location, COMPONENT_REF, | |
5615 | TREE_TYPE (tmp), result, tmp, NULL_TREE); | |
5616 | gfc_add_modify (&init, tmp, fold_convert (TREE_TYPE (tmp), | |
5617 | null_pointer_node)); | |
5618 | } | |
deb7edfc | 5619 | else if (sym->ts.type == BT_DERIVED |
42766cb3 | 5620 | && sym->ts.u.derived->attr.alloc_comp |
5621 | && !sym->attr.allocatable) | |
53169279 | 5622 | { |
5623 | rank = sym->as ? sym->as->rank : 0; | |
89ac8ba1 | 5624 | tmp = gfc_nullify_alloc_comp (sym->ts.u.derived, result, rank); |
5625 | gfc_add_expr_to_block (&init, tmp); | |
53169279 | 5626 | } |
5176859a | 5627 | } |
e50e62f5 | 5628 | |
fa7b6574 | 5629 | if (result == NULL_TREE) |
5630 | { | |
5631 | /* TODO: move to the appropriate place in resolve.c. */ | |
90a4a5a6 | 5632 | if (warn_return_type && sym == sym->result) |
fa7b6574 | 5633 | gfc_warning ("Return value of function '%s' at %L not set", |
5634 | sym->name, &sym->declared_at); | |
90a4a5a6 | 5635 | if (warn_return_type) |
5636 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
fa7b6574 | 5637 | } |
4ee9c684 | 5638 | else |
89ac8ba1 | 5639 | gfc_add_expr_to_block (&body, gfc_generate_return ()); |
4ee9c684 | 5640 | } |
89ac8ba1 | 5641 | |
5642 | gfc_init_block (&cleanup); | |
5643 | ||
5644 | /* Reset recursion-check variable. */ | |
5645 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
5646 | && !is_recursive | |
5ae82d58 | 5647 | && !gfc_option.gfc_flag_openmp |
89ac8ba1 | 5648 | && recurcheckvar != NULL_TREE) |
e50e62f5 | 5649 | { |
89ac8ba1 | 5650 | gfc_add_modify (&cleanup, recurcheckvar, boolean_false_node); |
5651 | recurcheckvar = NULL; | |
e50e62f5 | 5652 | } |
2294b616 | 5653 | |
89ac8ba1 | 5654 | /* Finish the function body and add init and cleanup code. */ |
5655 | tmp = gfc_finish_block (&body); | |
5656 | gfc_start_wrapped_block (&try_block, tmp); | |
5657 | /* Add code to create and cleanup arrays. */ | |
5658 | gfc_trans_deferred_vars (sym, &try_block); | |
5659 | gfc_add_init_cleanup (&try_block, gfc_finish_block (&init), | |
5660 | gfc_finish_block (&cleanup)); | |
4ee9c684 | 5661 | |
5662 | /* Add all the decls we created during processing. */ | |
5663 | decl = saved_function_decls; | |
5664 | while (decl) | |
5665 | { | |
5666 | tree next; | |
5667 | ||
1767a056 | 5668 | next = DECL_CHAIN (decl); |
5669 | DECL_CHAIN (decl) = NULL_TREE; | |
4c197fd0 | 5670 | pushdecl (decl); |
4ee9c684 | 5671 | decl = next; |
5672 | } | |
5673 | saved_function_decls = NULL_TREE; | |
5674 | ||
89ac8ba1 | 5675 | DECL_SAVED_TREE (fndecl) = gfc_finish_wrapped_block (&try_block); |
e5004242 | 5676 | decl = getdecls (); |
4ee9c684 | 5677 | |
5678 | /* Finish off this function and send it for code generation. */ | |
cde2be84 | 5679 | poplevel (1, 1); |
4ee9c684 | 5680 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; |
5681 | ||
e5004242 | 5682 | DECL_SAVED_TREE (fndecl) |
5683 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5684 | DECL_INITIAL (fndecl)); | |
5685 | ||
9579733e | 5686 | if (nonlocal_dummy_decls) |
5687 | { | |
5688 | BLOCK_VARS (DECL_INITIAL (fndecl)) | |
5689 | = chainon (BLOCK_VARS (DECL_INITIAL (fndecl)), nonlocal_dummy_decls); | |
5690 | pointer_set_destroy (nonlocal_dummy_decl_pset); | |
5691 | nonlocal_dummy_decls = NULL; | |
5692 | nonlocal_dummy_decl_pset = NULL; | |
5693 | } | |
5694 | ||
4ee9c684 | 5695 | /* Output the GENERIC tree. */ |
5696 | dump_function (TDI_original, fndecl); | |
5697 | ||
5698 | /* Store the end of the function, so that we get good line number | |
5699 | info for the epilogue. */ | |
5700 | cfun->function_end_locus = input_location; | |
5701 | ||
5702 | /* We're leaving the context of this function, so zap cfun. | |
5703 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
5704 | tree_rest_of_compilation. */ | |
87d4aa85 | 5705 | set_cfun (NULL); |
4ee9c684 | 5706 | |
5707 | if (old_context) | |
5708 | { | |
5709 | pop_function_context (); | |
5710 | saved_function_decls = saved_parent_function_decls; | |
5711 | } | |
5712 | current_function_decl = old_context; | |
5713 | ||
1f7747bd | 5714 | if (decl_function_context (fndecl)) |
5715 | { | |
5716 | /* Register this function with cgraph just far enough to get it | |
5717 | added to our parent's nested function list. | |
5718 | If there are static coarrays in this function, the nested _caf_init | |
5719 | function has already called cgraph_create_node, which also created | |
5720 | the cgraph node for this function. */ | |
5721 | if (!has_coarray_vars || gfc_option.coarray != GFC_FCOARRAY_LIB) | |
5722 | (void) cgraph_create_node (fndecl); | |
5723 | } | |
4ee9c684 | 5724 | else |
bb982f66 | 5725 | cgraph_finalize_function (fndecl, true); |
df4d540f | 5726 | |
5727 | gfc_trans_use_stmts (ns); | |
2eb674c9 | 5728 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
7257a5d2 | 5729 | |
5730 | if (sym->attr.is_main_program) | |
5731 | create_main_function (fndecl); | |
89ac8ba1 | 5732 | |
5733 | current_procedure_symbol = previous_procedure_symbol; | |
4ee9c684 | 5734 | } |
5735 | ||
7257a5d2 | 5736 | |
4ee9c684 | 5737 | void |
5738 | gfc_generate_constructors (void) | |
5739 | { | |
22d678e8 | 5740 | gcc_assert (gfc_static_ctors == NULL_TREE); |
4ee9c684 | 5741 | #if 0 |
5742 | tree fnname; | |
5743 | tree type; | |
5744 | tree fndecl; | |
5745 | tree decl; | |
5746 | tree tmp; | |
5747 | ||
5748 | if (gfc_static_ctors == NULL_TREE) | |
5749 | return; | |
5750 | ||
db85cc4f | 5751 | fnname = get_file_function_name ("I"); |
e1036019 | 5752 | type = build_function_type_list (void_type_node, NULL_TREE); |
4ee9c684 | 5753 | |
e60a6f7b | 5754 | fndecl = build_decl (input_location, |
5755 | FUNCTION_DECL, fnname, type); | |
4ee9c684 | 5756 | TREE_PUBLIC (fndecl) = 1; |
5757 | ||
e60a6f7b | 5758 | decl = build_decl (input_location, |
5759 | RESULT_DECL, NULL_TREE, void_type_node); | |
540edea7 | 5760 | DECL_ARTIFICIAL (decl) = 1; |
5761 | DECL_IGNORED_P (decl) = 1; | |
4ee9c684 | 5762 | DECL_CONTEXT (decl) = fndecl; |
5763 | DECL_RESULT (fndecl) = decl; | |
5764 | ||
5765 | pushdecl (fndecl); | |
5766 | ||
5767 | current_function_decl = fndecl; | |
5768 | ||
b2c4af5e | 5769 | rest_of_decl_compilation (fndecl, 1, 0); |
4ee9c684 | 5770 | |
b2c4af5e | 5771 | make_decl_rtl (fndecl); |
4ee9c684 | 5772 | |
00cf115c | 5773 | allocate_struct_function (fndecl, false); |
4ee9c684 | 5774 | |
cde2be84 | 5775 | pushlevel (); |
4ee9c684 | 5776 | |
5777 | for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors)) | |
5778 | { | |
389dd41b | 5779 | tmp = build_call_expr_loc (input_location, |
5780 | TREE_VALUE (gfc_static_ctors), 0); | |
e60a6f7b | 5781 | DECL_SAVED_TREE (fndecl) = build_stmt (input_location, EXPR_STMT, tmp); |
4ee9c684 | 5782 | } |
5783 | ||
e5004242 | 5784 | decl = getdecls (); |
cde2be84 | 5785 | poplevel (1, 1); |
4ee9c684 | 5786 | |
5787 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
e5004242 | 5788 | DECL_SAVED_TREE (fndecl) |
5789 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5790 | DECL_INITIAL (fndecl)); | |
4ee9c684 | 5791 | |
5792 | free_after_parsing (cfun); | |
5793 | free_after_compilation (cfun); | |
5794 | ||
6148a911 | 5795 | tree_rest_of_compilation (fndecl); |
4ee9c684 | 5796 | |
5797 | current_function_decl = NULL_TREE; | |
5798 | #endif | |
5799 | } | |
5800 | ||
9ec7c303 | 5801 | /* Translates a BLOCK DATA program unit. This means emitting the |
5802 | commons contained therein plus their initializations. We also emit | |
5803 | a globally visible symbol to make sure that each BLOCK DATA program | |
5804 | unit remains unique. */ | |
5805 | ||
5806 | void | |
5807 | gfc_generate_block_data (gfc_namespace * ns) | |
5808 | { | |
5809 | tree decl; | |
5810 | tree id; | |
5811 | ||
b31f705b | 5812 | /* Tell the backend the source location of the block data. */ |
5813 | if (ns->proc_name) | |
5814 | gfc_set_backend_locus (&ns->proc_name->declared_at); | |
5815 | else | |
5816 | gfc_set_backend_locus (&gfc_current_locus); | |
5817 | ||
5818 | /* Process the DATA statements. */ | |
9ec7c303 | 5819 | gfc_trans_common (ns); |
5820 | ||
b31f705b | 5821 | /* Create a global symbol with the mane of the block data. This is to |
5822 | generate linker errors if the same name is used twice. It is never | |
5823 | really used. */ | |
9ec7c303 | 5824 | if (ns->proc_name) |
5825 | id = gfc_sym_mangled_function_id (ns->proc_name); | |
5826 | else | |
5827 | id = get_identifier ("__BLOCK_DATA__"); | |
5828 | ||
e60a6f7b | 5829 | decl = build_decl (input_location, |
5830 | VAR_DECL, id, gfc_array_index_type); | |
9ec7c303 | 5831 | TREE_PUBLIC (decl) = 1; |
5832 | TREE_STATIC (decl) = 1; | |
df4d540f | 5833 | DECL_IGNORED_P (decl) = 1; |
9ec7c303 | 5834 | |
5835 | pushdecl (decl); | |
5836 | rest_of_decl_compilation (decl, 1, 0); | |
5837 | } | |
5838 | ||
b549d2a5 | 5839 | |
6a7084d7 | 5840 | /* Process the local variables of a BLOCK construct. */ |
5841 | ||
5842 | void | |
3c82e013 | 5843 | gfc_process_block_locals (gfc_namespace* ns) |
6a7084d7 | 5844 | { |
5845 | tree decl; | |
5846 | ||
5847 | gcc_assert (saved_local_decls == NULL_TREE); | |
a961ca30 | 5848 | has_coarray_vars = false; |
5849 | ||
6a7084d7 | 5850 | generate_local_vars (ns); |
5851 | ||
a961ca30 | 5852 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
5853 | generate_coarray_init (ns); | |
5854 | ||
6a7084d7 | 5855 | decl = saved_local_decls; |
5856 | while (decl) | |
5857 | { | |
5858 | tree next; | |
5859 | ||
1767a056 | 5860 | next = DECL_CHAIN (decl); |
5861 | DECL_CHAIN (decl) = NULL_TREE; | |
6a7084d7 | 5862 | pushdecl (decl); |
5863 | decl = next; | |
5864 | } | |
5865 | saved_local_decls = NULL_TREE; | |
5866 | } | |
5867 | ||
5868 | ||
4ee9c684 | 5869 | #include "gt-fortran-trans-decl.h" |