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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 | ||
cf5f881f | 499 | /* Handle setting of GFC_DECL_SCALAR* on DECL. */ |
500 | ||
501 | void | |
502 | gfc_finish_decl_attrs (tree decl, symbol_attribute *attr) | |
503 | { | |
504 | if (!attr->dimension && !attr->codimension) | |
505 | { | |
506 | /* Handle scalar allocatable variables. */ | |
507 | if (attr->allocatable) | |
508 | { | |
509 | gfc_allocate_lang_decl (decl); | |
510 | GFC_DECL_SCALAR_ALLOCATABLE (decl) = 1; | |
511 | } | |
512 | /* Handle scalar pointer variables. */ | |
513 | if (attr->pointer) | |
514 | { | |
515 | gfc_allocate_lang_decl (decl); | |
516 | GFC_DECL_SCALAR_POINTER (decl) = 1; | |
517 | } | |
518 | } | |
519 | } | |
520 | ||
521 | ||
4ee9c684 | 522 | /* Apply symbol attributes to a variable, and add it to the function scope. */ |
523 | ||
524 | static void | |
525 | gfc_finish_var_decl (tree decl, gfc_symbol * sym) | |
526 | { | |
c1977dbe | 527 | tree new_type; |
f888a3fb | 528 | /* TREE_ADDRESSABLE means the address of this variable is actually needed. |
4ee9c684 | 529 | This is the equivalent of the TARGET variables. |
530 | We also need to set this if the variable is passed by reference in a | |
531 | CALL statement. */ | |
b549d2a5 | 532 | |
b7bf3f81 | 533 | /* Set DECL_VALUE_EXPR for Cray Pointees. */ |
b549d2a5 | 534 | if (sym->attr.cray_pointee) |
b7bf3f81 | 535 | gfc_finish_cray_pointee (decl, sym); |
b549d2a5 | 536 | |
4ee9c684 | 537 | if (sym->attr.target) |
538 | TREE_ADDRESSABLE (decl) = 1; | |
539 | /* If it wasn't used we wouldn't be getting it. */ | |
540 | TREE_USED (decl) = 1; | |
541 | ||
7415cfe4 | 542 | if (sym->attr.flavor == FL_PARAMETER |
543 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) | |
544 | TREE_READONLY (decl) = 1; | |
545 | ||
4ee9c684 | 546 | /* Chain this decl to the pending declarations. Don't do pushdecl() |
547 | because this would add them to the current scope rather than the | |
548 | function scope. */ | |
549 | if (current_function_decl != NULL_TREE) | |
550 | { | |
7af6a4af | 551 | if (sym->ns->proc_name->backend_decl == current_function_decl |
6a7084d7 | 552 | || sym->result == sym) |
4ee9c684 | 553 | gfc_add_decl_to_function (decl); |
6a7084d7 | 554 | else if (sym->ns->proc_name->attr.flavor == FL_LABEL) |
555 | /* This is a BLOCK construct. */ | |
556 | add_decl_as_local (decl); | |
4ee9c684 | 557 | else |
558 | gfc_add_decl_to_parent_function (decl); | |
559 | } | |
560 | ||
b7bf3f81 | 561 | if (sym->attr.cray_pointee) |
562 | return; | |
563 | ||
c5cb468c | 564 | if(sym->attr.is_bind_c == 1 && sym->binding_label) |
c5d33754 | 565 | { |
566 | /* We need to put variables that are bind(c) into the common | |
567 | segment of the object file, because this is what C would do. | |
568 | gfortran would typically put them in either the BSS or | |
569 | initialized data segments, and only mark them as common if | |
570 | they were part of common blocks. However, if they are not put | |
ea657963 | 571 | into common space, then C cannot initialize global Fortran |
c5d33754 | 572 | variables that it interoperates with and the draft says that |
573 | either Fortran or C should be able to initialize it (but not | |
574 | both, of course.) (J3/04-007, section 15.3). */ | |
575 | TREE_PUBLIC(decl) = 1; | |
576 | DECL_COMMON(decl) = 1; | |
577 | } | |
a90fe829 | 578 | |
4ee9c684 | 579 | /* If a variable is USE associated, it's always external. */ |
580 | if (sym->attr.use_assoc) | |
581 | { | |
582 | DECL_EXTERNAL (decl) = 1; | |
583 | TREE_PUBLIC (decl) = 1; | |
584 | } | |
4f0fae8e | 585 | else if (sym->module && !sym->attr.result && !sym->attr.dummy) |
4ee9c684 | 586 | { |
6b20224d | 587 | /* TODO: Don't set sym->module for result or dummy variables. */ |
7af6a4af | 588 | gcc_assert (current_function_decl == NULL_TREE || sym->result == sym); |
7d6b5754 | 589 | |
87d9f569 | 590 | if (sym->attr.access != ACCESS_PRIVATE || sym->attr.public_used) |
c5cb468c | 591 | TREE_PUBLIC (decl) = 1; |
4ee9c684 | 592 | TREE_STATIC (decl) = 1; |
593 | } | |
594 | ||
f0d4969f | 595 | /* Derived types are a bit peculiar because of the possibility of |
596 | a default initializer; this must be applied each time the variable | |
597 | comes into scope it therefore need not be static. These variables | |
598 | are SAVE_NONE but have an initializer. Otherwise explicitly | |
69b1505f | 599 | initialized variables are SAVE_IMPLICIT and explicitly saved are |
f0d4969f | 600 | SAVE_EXPLICIT. */ |
601 | if (!sym->attr.use_assoc | |
602 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
a961ca30 | 603 | || (sym->value && sym->ns->proc_name->attr.is_main_program) |
604 | || (gfc_option.coarray == GFC_FCOARRAY_LIB | |
605 | && sym->attr.codimension && !sym->attr.allocatable))) | |
4ee9c684 | 606 | TREE_STATIC (decl) = 1; |
ef814c81 | 607 | |
608 | if (sym->attr.volatile_) | |
609 | { | |
ef814c81 | 610 | TREE_THIS_VOLATILE (decl) = 1; |
2364aa60 | 611 | TREE_SIDE_EFFECTS (decl) = 1; |
c1977dbe | 612 | new_type = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE); |
613 | TREE_TYPE (decl) = new_type; | |
a90fe829 | 614 | } |
ef814c81 | 615 | |
4ee9c684 | 616 | /* Keep variables larger than max-stack-var-size off stack. */ |
617 | if (!sym->ns->proc_name->attr.recursive | |
618 | && INTEGER_CST_P (DECL_SIZE_UNIT (decl)) | |
a3f2c0e1 | 619 | && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) |
620 | /* Put variable length auto array pointers always into stack. */ | |
621 | && (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE | |
622 | || sym->attr.dimension == 0 | |
623 | || sym->as->type != AS_EXPLICIT | |
624 | || sym->attr.pointer | |
625 | || sym->attr.allocatable) | |
626 | && !DECL_ARTIFICIAL (decl)) | |
4ee9c684 | 627 | TREE_STATIC (decl) = 1; |
764f1175 | 628 | |
629 | /* Handle threadprivate variables. */ | |
9dda1f80 | 630 | if (sym->attr.threadprivate |
764f1175 | 631 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) |
632 | DECL_TLS_MODEL (decl) = decl_default_tls_model (decl); | |
cf5f881f | 633 | |
634 | gfc_finish_decl_attrs (decl, &sym->attr); | |
4ee9c684 | 635 | } |
636 | ||
637 | ||
638 | /* Allocate the lang-specific part of a decl. */ | |
639 | ||
640 | void | |
641 | gfc_allocate_lang_decl (tree decl) | |
642 | { | |
cf5f881f | 643 | if (DECL_LANG_SPECIFIC (decl) == NULL) |
644 | DECL_LANG_SPECIFIC (decl) = ggc_cleared_alloc<struct lang_decl> (); | |
4ee9c684 | 645 | } |
646 | ||
647 | /* Remember a symbol to generate initialization/cleanup code at function | |
648 | entry/exit. */ | |
649 | ||
650 | static void | |
651 | gfc_defer_symbol_init (gfc_symbol * sym) | |
652 | { | |
653 | gfc_symbol *p; | |
654 | gfc_symbol *last; | |
655 | gfc_symbol *head; | |
656 | ||
657 | /* Don't add a symbol twice. */ | |
658 | if (sym->tlink) | |
659 | return; | |
660 | ||
661 | last = head = sym->ns->proc_name; | |
662 | p = last->tlink; | |
663 | ||
664 | /* Make sure that setup code for dummy variables which are used in the | |
665 | setup of other variables is generated first. */ | |
666 | if (sym->attr.dummy) | |
667 | { | |
668 | /* Find the first dummy arg seen after us, or the first non-dummy arg. | |
669 | This is a circular list, so don't go past the head. */ | |
670 | while (p != head | |
671 | && (!p->attr.dummy || p->dummy_order > sym->dummy_order)) | |
672 | { | |
673 | last = p; | |
674 | p = p->tlink; | |
675 | } | |
676 | } | |
677 | /* Insert in between last and p. */ | |
678 | last->tlink = sym; | |
679 | sym->tlink = p; | |
680 | } | |
681 | ||
682 | ||
9f5a9ac5 | 683 | /* Used in gfc_get_symbol_decl and gfc_get_derived_type to obtain the |
684 | backend_decl for a module symbol, if it all ready exists. If the | |
685 | module gsymbol does not exist, it is created. If the symbol does | |
686 | not exist, it is added to the gsymbol namespace. Returns true if | |
687 | an existing backend_decl is found. */ | |
688 | ||
689 | bool | |
690 | gfc_get_module_backend_decl (gfc_symbol *sym) | |
691 | { | |
692 | gfc_gsymbol *gsym; | |
693 | gfc_symbol *s; | |
694 | gfc_symtree *st; | |
695 | ||
696 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
697 | ||
698 | if (!gsym || (gsym->ns && gsym->type == GSYM_MODULE)) | |
699 | { | |
700 | st = NULL; | |
701 | s = NULL; | |
702 | ||
703 | if (gsym) | |
704 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
705 | ||
706 | if (!s) | |
707 | { | |
708 | if (!gsym) | |
709 | { | |
710 | gsym = gfc_get_gsymbol (sym->module); | |
711 | gsym->type = GSYM_MODULE; | |
712 | gsym->ns = gfc_get_namespace (NULL, 0); | |
713 | } | |
714 | ||
715 | st = gfc_new_symtree (&gsym->ns->sym_root, sym->name); | |
716 | st->n.sym = sym; | |
717 | sym->refs++; | |
718 | } | |
719 | else if (sym->attr.flavor == FL_DERIVED) | |
720 | { | |
c2958b6b | 721 | if (s && s->attr.flavor == FL_PROCEDURE) |
722 | { | |
723 | gfc_interface *intr; | |
724 | gcc_assert (s->attr.generic); | |
725 | for (intr = s->generic; intr; intr = intr->next) | |
726 | if (intr->sym->attr.flavor == FL_DERIVED) | |
727 | { | |
728 | s = intr->sym; | |
729 | break; | |
730 | } | |
731 | } | |
732 | ||
9f5a9ac5 | 733 | if (!s->backend_decl) |
734 | s->backend_decl = gfc_get_derived_type (s); | |
735 | gfc_copy_dt_decls_ifequal (s, sym, true); | |
736 | return true; | |
737 | } | |
738 | else if (s->backend_decl) | |
739 | { | |
85ec2f13 | 740 | if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) |
9f5a9ac5 | 741 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, |
742 | true); | |
743 | else if (sym->ts.type == BT_CHARACTER) | |
744 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
745 | sym->backend_decl = s->backend_decl; | |
746 | return true; | |
747 | } | |
748 | } | |
749 | return false; | |
750 | } | |
751 | ||
752 | ||
4ee9c684 | 753 | /* Create an array index type variable with function scope. */ |
754 | ||
755 | static tree | |
756 | create_index_var (const char * pfx, int nest) | |
757 | { | |
758 | tree decl; | |
759 | ||
760 | decl = gfc_create_var_np (gfc_array_index_type, pfx); | |
761 | if (nest) | |
762 | gfc_add_decl_to_parent_function (decl); | |
763 | else | |
764 | gfc_add_decl_to_function (decl); | |
765 | return decl; | |
766 | } | |
767 | ||
768 | ||
769 | /* Create variables to hold all the non-constant bits of info for a | |
770 | descriptorless array. Remember these in the lang-specific part of the | |
771 | type. */ | |
772 | ||
773 | static void | |
774 | gfc_build_qualified_array (tree decl, gfc_symbol * sym) | |
775 | { | |
776 | tree type; | |
777 | int dim; | |
778 | int nest; | |
7b82374f | 779 | gfc_namespace* procns; |
4ee9c684 | 780 | |
781 | type = TREE_TYPE (decl); | |
782 | ||
783 | /* We just use the descriptor, if there is one. */ | |
784 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
785 | return; | |
786 | ||
22d678e8 | 787 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
7b82374f | 788 | procns = gfc_find_proc_namespace (sym->ns); |
789 | nest = (procns->proc_name->backend_decl != current_function_decl) | |
4ee9c684 | 790 | && !sym->attr.contained; |
791 | ||
a961ca30 | 792 | if (sym->attr.codimension && gfc_option.coarray == GFC_FCOARRAY_LIB |
7dce33fe | 793 | && sym->as->type != AS_ASSUMED_SHAPE |
a961ca30 | 794 | && GFC_TYPE_ARRAY_CAF_TOKEN (type) == NULL_TREE) |
795 | { | |
796 | tree token; | |
797 | ||
d881175c | 798 | token = gfc_create_var_np (build_qualified_type (pvoid_type_node, |
799 | TYPE_QUAL_RESTRICT), | |
800 | "caf_token"); | |
a961ca30 | 801 | GFC_TYPE_ARRAY_CAF_TOKEN (type) = token; |
802 | DECL_ARTIFICIAL (token) = 1; | |
803 | TREE_STATIC (token) = 1; | |
804 | gfc_add_decl_to_function (token); | |
805 | } | |
806 | ||
4ee9c684 | 807 | for (dim = 0; dim < GFC_TYPE_ARRAY_RANK (type); dim++) |
808 | { | |
809 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
86254bbf | 810 | { |
811 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
812 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
813 | } | |
9ca15c9b | 814 | /* Don't try to use the unknown bound for assumed shape arrays. */ |
4ee9c684 | 815 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE |
816 | && (sym->as->type != AS_ASSUMED_SIZE | |
817 | || dim < GFC_TYPE_ARRAY_RANK (type) - 1)) | |
86254bbf | 818 | { |
819 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
820 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
821 | } | |
4ee9c684 | 822 | |
823 | if (GFC_TYPE_ARRAY_STRIDE (type, dim) == NULL_TREE) | |
86254bbf | 824 | { |
825 | GFC_TYPE_ARRAY_STRIDE (type, dim) = create_index_var ("stride", nest); | |
826 | TREE_NO_WARNING (GFC_TYPE_ARRAY_STRIDE (type, dim)) = 1; | |
827 | } | |
4ee9c684 | 828 | } |
076094b7 | 829 | for (dim = GFC_TYPE_ARRAY_RANK (type); |
830 | dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type); dim++) | |
831 | { | |
832 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
833 | { | |
834 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
835 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
836 | } | |
837 | /* Don't try to use the unknown ubound for the last coarray dimension. */ | |
838 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE | |
839 | && dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type) - 1) | |
840 | { | |
841 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
842 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
843 | } | |
844 | } | |
4ee9c684 | 845 | if (GFC_TYPE_ARRAY_OFFSET (type) == NULL_TREE) |
846 | { | |
847 | GFC_TYPE_ARRAY_OFFSET (type) = gfc_create_var_np (gfc_array_index_type, | |
848 | "offset"); | |
86254bbf | 849 | TREE_NO_WARNING (GFC_TYPE_ARRAY_OFFSET (type)) = 1; |
850 | ||
4ee9c684 | 851 | if (nest) |
852 | gfc_add_decl_to_parent_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
853 | else | |
854 | gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
855 | } | |
d4163395 | 856 | |
857 | if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE | |
858 | && sym->as->type != AS_ASSUMED_SIZE) | |
86254bbf | 859 | { |
860 | GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest); | |
861 | TREE_NO_WARNING (GFC_TYPE_ARRAY_SIZE (type)) = 1; | |
862 | } | |
d4163395 | 863 | |
864 | if (POINTER_TYPE_P (type)) | |
865 | { | |
866 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type))); | |
867 | gcc_assert (TYPE_LANG_SPECIFIC (type) | |
868 | == TYPE_LANG_SPECIFIC (TREE_TYPE (type))); | |
869 | type = TREE_TYPE (type); | |
870 | } | |
871 | ||
872 | if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type)) | |
873 | { | |
874 | tree size, range; | |
875 | ||
fd779e1d | 876 | size = fold_build2_loc (input_location, MINUS_EXPR, gfc_array_index_type, |
877 | GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node); | |
d4163395 | 878 | range = build_range_type (gfc_array_index_type, gfc_index_zero_node, |
879 | size); | |
880 | TYPE_DOMAIN (type) = range; | |
881 | layout_type (type); | |
882 | } | |
6cf159a6 | 883 | |
6cf159a6 | 884 | if (TYPE_NAME (type) != NULL_TREE |
885 | && GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1) != NULL_TREE | |
886 | && TREE_CODE (GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1)) == VAR_DECL) | |
887 | { | |
888 | tree gtype = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
889 | ||
890 | for (dim = 0; dim < sym->as->rank - 1; dim++) | |
891 | { | |
892 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
893 | gtype = TREE_TYPE (gtype); | |
894 | } | |
895 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
896 | if (TYPE_MAX_VALUE (TYPE_DOMAIN (gtype)) == NULL) | |
897 | TYPE_NAME (type) = NULL_TREE; | |
898 | } | |
899 | ||
900 | if (TYPE_NAME (type) == NULL_TREE) | |
901 | { | |
902 | tree gtype = TREE_TYPE (type), rtype, type_decl; | |
903 | ||
904 | for (dim = sym->as->rank - 1; dim >= 0; dim--) | |
905 | { | |
7130ec9d | 906 | tree lbound, ubound; |
907 | lbound = GFC_TYPE_ARRAY_LBOUND (type, dim); | |
908 | ubound = GFC_TYPE_ARRAY_UBOUND (type, dim); | |
909 | rtype = build_range_type (gfc_array_index_type, lbound, ubound); | |
6cf159a6 | 910 | gtype = build_array_type (gtype, rtype); |
3c8f1d7e | 911 | /* Ensure the bound variables aren't optimized out at -O0. |
912 | For -O1 and above they often will be optimized out, but | |
84bfaaeb | 913 | can be tracked by VTA. Also set DECL_NAMELESS, so that |
914 | the artificial lbound.N or ubound.N DECL_NAME doesn't | |
915 | end up in debug info. */ | |
7130ec9d | 916 | if (lbound && TREE_CODE (lbound) == VAR_DECL |
917 | && DECL_ARTIFICIAL (lbound) && DECL_IGNORED_P (lbound)) | |
918 | { | |
919 | if (DECL_NAME (lbound) | |
920 | && strstr (IDENTIFIER_POINTER (DECL_NAME (lbound)), | |
921 | "lbound") != 0) | |
84bfaaeb | 922 | DECL_NAMELESS (lbound) = 1; |
7130ec9d | 923 | DECL_IGNORED_P (lbound) = 0; |
924 | } | |
925 | if (ubound && TREE_CODE (ubound) == VAR_DECL | |
926 | && DECL_ARTIFICIAL (ubound) && DECL_IGNORED_P (ubound)) | |
927 | { | |
928 | if (DECL_NAME (ubound) | |
929 | && strstr (IDENTIFIER_POINTER (DECL_NAME (ubound)), | |
930 | "ubound") != 0) | |
84bfaaeb | 931 | DECL_NAMELESS (ubound) = 1; |
7130ec9d | 932 | DECL_IGNORED_P (ubound) = 0; |
933 | } | |
6cf159a6 | 934 | } |
e60a6f7b | 935 | TYPE_NAME (type) = type_decl = build_decl (input_location, |
936 | TYPE_DECL, NULL, gtype); | |
6cf159a6 | 937 | DECL_ORIGINAL_TYPE (type_decl) = gtype; |
938 | } | |
4ee9c684 | 939 | } |
940 | ||
941 | ||
942 | /* For some dummy arguments we don't use the actual argument directly. | |
5ed82495 | 943 | Instead we create a local decl and use that. This allows us to perform |
4ee9c684 | 944 | initialization, and construct full type information. */ |
945 | ||
946 | static tree | |
947 | gfc_build_dummy_array_decl (gfc_symbol * sym, tree dummy) | |
948 | { | |
949 | tree decl; | |
950 | tree type; | |
951 | gfc_array_spec *as; | |
952 | char *name; | |
3d8dea5a | 953 | gfc_packed packed; |
4ee9c684 | 954 | int n; |
955 | bool known_size; | |
956 | ||
f00f6dd6 | 957 | if (sym->attr.pointer || sym->attr.allocatable |
958 | || (sym->as && sym->as->type == AS_ASSUMED_RANK)) | |
4ee9c684 | 959 | return dummy; |
960 | ||
961 | /* Add to list of variables if not a fake result variable. */ | |
962 | if (sym->attr.result || sym->attr.dummy) | |
963 | gfc_defer_symbol_init (sym); | |
964 | ||
965 | type = TREE_TYPE (dummy); | |
22d678e8 | 966 | gcc_assert (TREE_CODE (dummy) == PARM_DECL |
4ee9c684 | 967 | && POINTER_TYPE_P (type)); |
968 | ||
f888a3fb | 969 | /* Do we know the element size? */ |
4ee9c684 | 970 | known_size = sym->ts.type != BT_CHARACTER |
eeebe20b | 971 | || INTEGER_CST_P (sym->ts.u.cl->backend_decl); |
a90fe829 | 972 | |
4ee9c684 | 973 | if (known_size && !GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (type))) |
974 | { | |
975 | /* For descriptorless arrays with known element size the actual | |
976 | argument is sufficient. */ | |
22d678e8 | 977 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
4ee9c684 | 978 | gfc_build_qualified_array (dummy, sym); |
979 | return dummy; | |
980 | } | |
981 | ||
982 | type = TREE_TYPE (type); | |
983 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
984 | { | |
cb8e3560 | 985 | /* Create a descriptorless array pointer. */ |
4ee9c684 | 986 | as = sym->as; |
3d8dea5a | 987 | packed = PACKED_NO; |
3d235846 | 988 | |
989 | /* Even when -frepack-arrays is used, symbols with TARGET attribute | |
990 | are not repacked. */ | |
991 | if (!gfc_option.flag_repack_arrays || sym->attr.target) | |
4ee9c684 | 992 | { |
993 | if (as->type == AS_ASSUMED_SIZE) | |
3d8dea5a | 994 | packed = PACKED_FULL; |
4ee9c684 | 995 | } |
996 | else | |
997 | { | |
998 | if (as->type == AS_EXPLICIT) | |
999 | { | |
3d8dea5a | 1000 | packed = PACKED_FULL; |
4ee9c684 | 1001 | for (n = 0; n < as->rank; n++) |
1002 | { | |
1003 | if (!(as->upper[n] | |
1004 | && as->lower[n] | |
1005 | && as->upper[n]->expr_type == EXPR_CONSTANT | |
1006 | && as->lower[n]->expr_type == EXPR_CONSTANT)) | |
73bd65ab | 1007 | { |
1008 | packed = PACKED_PARTIAL; | |
1009 | break; | |
1010 | } | |
4ee9c684 | 1011 | } |
1012 | } | |
1013 | else | |
3d8dea5a | 1014 | packed = PACKED_PARTIAL; |
4ee9c684 | 1015 | } |
1016 | ||
1017 | type = gfc_typenode_for_spec (&sym->ts); | |
e1b3b79b | 1018 | type = gfc_get_nodesc_array_type (type, sym->as, packed, |
1019 | !sym->attr.target); | |
4ee9c684 | 1020 | } |
1021 | else | |
1022 | { | |
1023 | /* We now have an expression for the element size, so create a fully | |
1024 | qualified type. Reset sym->backend decl or this will just return the | |
1025 | old type. */ | |
d95efb59 | 1026 | DECL_ARTIFICIAL (sym->backend_decl) = 1; |
4ee9c684 | 1027 | sym->backend_decl = NULL_TREE; |
1028 | type = gfc_sym_type (sym); | |
3d8dea5a | 1029 | packed = PACKED_FULL; |
4ee9c684 | 1030 | } |
1031 | ||
1032 | ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0); | |
e60a6f7b | 1033 | decl = build_decl (input_location, |
1034 | VAR_DECL, get_identifier (name), type); | |
4ee9c684 | 1035 | |
1036 | DECL_ARTIFICIAL (decl) = 1; | |
84bfaaeb | 1037 | DECL_NAMELESS (decl) = 1; |
4ee9c684 | 1038 | TREE_PUBLIC (decl) = 0; |
1039 | TREE_STATIC (decl) = 0; | |
1040 | DECL_EXTERNAL (decl) = 0; | |
1041 | ||
a1f1e248 | 1042 | /* Avoid uninitialized warnings for optional dummy arguments. */ |
1043 | if (sym->attr.optional) | |
1044 | TREE_NO_WARNING (decl) = 1; | |
1045 | ||
4ee9c684 | 1046 | /* We should never get deferred shape arrays here. We used to because of |
1047 | frontend bugs. */ | |
22d678e8 | 1048 | gcc_assert (sym->as->type != AS_DEFERRED); |
4ee9c684 | 1049 | |
3d8dea5a | 1050 | if (packed == PACKED_PARTIAL) |
1051 | GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1; | |
1052 | else if (packed == PACKED_FULL) | |
1053 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
4ee9c684 | 1054 | |
1055 | gfc_build_qualified_array (decl, sym); | |
1056 | ||
1057 | if (DECL_LANG_SPECIFIC (dummy)) | |
1058 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (dummy); | |
1059 | else | |
1060 | gfc_allocate_lang_decl (decl); | |
1061 | ||
1062 | GFC_DECL_SAVED_DESCRIPTOR (decl) = dummy; | |
1063 | ||
1064 | if (sym->ns->proc_name->backend_decl == current_function_decl | |
1065 | || sym->attr.contained) | |
1066 | gfc_add_decl_to_function (decl); | |
1067 | else | |
1068 | gfc_add_decl_to_parent_function (decl); | |
1069 | ||
1070 | return decl; | |
1071 | } | |
1072 | ||
9579733e | 1073 | /* For symbol SYM with GFC_DECL_SAVED_DESCRIPTOR used in contained |
1074 | function add a VAR_DECL to the current function with DECL_VALUE_EXPR | |
1075 | pointing to the artificial variable for debug info purposes. */ | |
1076 | ||
1077 | static void | |
1078 | gfc_nonlocal_dummy_array_decl (gfc_symbol *sym) | |
1079 | { | |
1080 | tree decl, dummy; | |
1081 | ||
1082 | if (! nonlocal_dummy_decl_pset) | |
1083 | nonlocal_dummy_decl_pset = pointer_set_create (); | |
1084 | ||
1085 | if (pointer_set_insert (nonlocal_dummy_decl_pset, sym->backend_decl)) | |
1086 | return; | |
1087 | ||
1088 | dummy = GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl); | |
e60a6f7b | 1089 | decl = build_decl (input_location, VAR_DECL, DECL_NAME (dummy), |
9579733e | 1090 | TREE_TYPE (sym->backend_decl)); |
1091 | DECL_ARTIFICIAL (decl) = 0; | |
1092 | TREE_USED (decl) = 1; | |
1093 | TREE_PUBLIC (decl) = 0; | |
1094 | TREE_STATIC (decl) = 0; | |
1095 | DECL_EXTERNAL (decl) = 0; | |
1096 | if (DECL_BY_REFERENCE (dummy)) | |
1097 | DECL_BY_REFERENCE (decl) = 1; | |
1098 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (sym->backend_decl); | |
1099 | SET_DECL_VALUE_EXPR (decl, sym->backend_decl); | |
1100 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
1101 | DECL_CONTEXT (decl) = DECL_CONTEXT (sym->backend_decl); | |
1767a056 | 1102 | DECL_CHAIN (decl) = nonlocal_dummy_decls; |
9579733e | 1103 | nonlocal_dummy_decls = decl; |
1104 | } | |
4ee9c684 | 1105 | |
1106 | /* Return a constant or a variable to use as a string length. Does not | |
1107 | add the decl to the current scope. */ | |
1108 | ||
1109 | static tree | |
1110 | gfc_create_string_length (gfc_symbol * sym) | |
1111 | { | |
eeebe20b | 1112 | gcc_assert (sym->ts.u.cl); |
1113 | gfc_conv_const_charlen (sym->ts.u.cl); | |
a4abf8a0 | 1114 | |
eeebe20b | 1115 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
4ee9c684 | 1116 | { |
a4abf8a0 | 1117 | tree length; |
774bbd60 | 1118 | const char *name; |
4ee9c684 | 1119 | |
873f242d | 1120 | /* The string length variable shall be in static memory if it is either |
1121 | explicitly SAVED, a module variable or with -fno-automatic. Only | |
1122 | relevant is "len=:" - otherwise, it is either a constant length or | |
1123 | it is an automatic variable. */ | |
be125be0 | 1124 | bool static_length = sym->attr.save |
1125 | || sym->ns->proc_name->attr.flavor == FL_MODULE | |
873f242d | 1126 | || (gfc_option.flag_max_stack_var_size == 0 |
1127 | && sym->ts.deferred && !sym->attr.dummy | |
1128 | && !sym->attr.result && !sym->attr.function); | |
be125be0 | 1129 | |
1130 | /* Also prefix the mangled name. We need to call GFC_PREFIX for static | |
1131 | variables as some systems do not support the "." in the assembler name. | |
1132 | For nonstatic variables, the "." does not appear in assembler. */ | |
1133 | if (static_length) | |
1134 | { | |
1135 | if (sym->module) | |
1136 | name = gfc_get_string (GFC_PREFIX ("%s_MOD_%s"), sym->module, | |
1137 | sym->name); | |
1138 | else | |
1139 | name = gfc_get_string (GFC_PREFIX ("%s"), sym->name); | |
1140 | } | |
1141 | else if (sym->module) | |
774bbd60 | 1142 | name = gfc_get_string (".__%s_MOD_%s", sym->module, sym->name); |
1143 | else | |
1144 | name = gfc_get_string (".%s", sym->name); | |
1145 | ||
e60a6f7b | 1146 | length = build_decl (input_location, |
1147 | VAR_DECL, get_identifier (name), | |
9ad09405 | 1148 | gfc_charlen_type_node); |
4ee9c684 | 1149 | DECL_ARTIFICIAL (length) = 1; |
1150 | TREE_USED (length) = 1; | |
d4163395 | 1151 | if (sym->ns->proc_name->tlink != NULL) |
1152 | gfc_defer_symbol_init (sym); | |
a4abf8a0 | 1153 | |
eeebe20b | 1154 | sym->ts.u.cl->backend_decl = length; |
774bbd60 | 1155 | |
be125be0 | 1156 | if (static_length) |
774bbd60 | 1157 | TREE_STATIC (length) = 1; |
1158 | ||
1159 | if (sym->ns->proc_name->attr.flavor == FL_MODULE | |
1160 | && (sym->attr.access != ACCESS_PRIVATE || sym->attr.public_used)) | |
1161 | TREE_PUBLIC (length) = 1; | |
4ee9c684 | 1162 | } |
1163 | ||
eeebe20b | 1164 | gcc_assert (sym->ts.u.cl->backend_decl != NULL_TREE); |
1165 | return sym->ts.u.cl->backend_decl; | |
4ee9c684 | 1166 | } |
1167 | ||
c8f1568f | 1168 | /* If a variable is assigned a label, we add another two auxiliary |
1169 | variables. */ | |
1170 | ||
1171 | static void | |
1172 | gfc_add_assign_aux_vars (gfc_symbol * sym) | |
1173 | { | |
1174 | tree addr; | |
1175 | tree length; | |
1176 | tree decl; | |
1177 | ||
1178 | gcc_assert (sym->backend_decl); | |
1179 | ||
1180 | decl = sym->backend_decl; | |
1181 | gfc_allocate_lang_decl (decl); | |
1182 | GFC_DECL_ASSIGN (decl) = 1; | |
e60a6f7b | 1183 | length = build_decl (input_location, |
1184 | VAR_DECL, create_tmp_var_name (sym->name), | |
c8f1568f | 1185 | gfc_charlen_type_node); |
e60a6f7b | 1186 | addr = build_decl (input_location, |
1187 | VAR_DECL, create_tmp_var_name (sym->name), | |
c8f1568f | 1188 | pvoid_type_node); |
1189 | gfc_finish_var_decl (length, sym); | |
1190 | gfc_finish_var_decl (addr, sym); | |
1191 | /* STRING_LENGTH is also used as flag. Less than -1 means that | |
1192 | ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the | |
1193 | target label's address. Otherwise, value is the length of a format string | |
1194 | and ASSIGN_ADDR is its address. */ | |
1195 | if (TREE_STATIC (length)) | |
35bf1214 | 1196 | DECL_INITIAL (length) = build_int_cst (gfc_charlen_type_node, -2); |
c8f1568f | 1197 | else |
1198 | gfc_defer_symbol_init (sym); | |
1199 | ||
1200 | GFC_DECL_STRING_LEN (decl) = length; | |
1201 | GFC_DECL_ASSIGN_ADDR (decl) = addr; | |
1202 | } | |
4ee9c684 | 1203 | |
36b0a1b0 | 1204 | |
1205 | static tree | |
1206 | add_attributes_to_decl (symbol_attribute sym_attr, tree list) | |
1207 | { | |
1208 | unsigned id; | |
1209 | tree attr; | |
1210 | ||
1211 | for (id = 0; id < EXT_ATTR_NUM; id++) | |
1212 | if (sym_attr.ext_attr & (1 << id)) | |
1213 | { | |
1214 | attr = build_tree_list ( | |
1215 | get_identifier (ext_attr_list[id].middle_end_name), | |
1216 | NULL_TREE); | |
1217 | list = chainon (list, attr); | |
1218 | } | |
1219 | ||
1220 | return list; | |
1221 | } | |
1222 | ||
1223 | ||
802532b9 | 1224 | static void build_function_decl (gfc_symbol * sym, bool global); |
1225 | ||
1226 | ||
4ee9c684 | 1227 | /* Return the decl for a gfc_symbol, create it if it doesn't already |
1228 | exist. */ | |
1229 | ||
1230 | tree | |
1231 | gfc_get_symbol_decl (gfc_symbol * sym) | |
1232 | { | |
1233 | tree decl; | |
1234 | tree length = NULL_TREE; | |
36b0a1b0 | 1235 | tree attributes; |
4ee9c684 | 1236 | int byref; |
cd2c99b8 | 1237 | bool intrinsic_array_parameter = false; |
8b9eb27e | 1238 | bool fun_or_res; |
4ee9c684 | 1239 | |
0b5dc8b5 | 1240 | gcc_assert (sym->attr.referenced |
9e45357a | 1241 | || sym->attr.flavor == FL_PROCEDURE |
1242 | || sym->attr.use_assoc | |
1243 | || sym->ns->proc_name->attr.if_source == IFSRC_IFBODY | |
1244 | || (sym->module && sym->attr.if_source != IFSRC_DECL | |
1245 | && sym->backend_decl)); | |
4ee9c684 | 1246 | |
ff70e443 | 1247 | if (sym->ns && sym->ns->proc_name && sym->ns->proc_name->attr.function) |
4ee9c684 | 1248 | byref = gfc_return_by_reference (sym->ns->proc_name); |
1249 | else | |
1250 | byref = 0; | |
1251 | ||
09c509ed | 1252 | /* Make sure that the vtab for the declared type is completed. */ |
1253 | if (sym->ts.type == BT_CLASS) | |
1254 | { | |
50b4b37b | 1255 | gfc_component *c = CLASS_DATA (sym); |
09c509ed | 1256 | if (!c->ts.u.derived->backend_decl) |
eab71f19 | 1257 | { |
1258 | gfc_find_derived_vtab (c->ts.u.derived); | |
1259 | gfc_get_derived_type (sym->ts.u.derived); | |
1260 | } | |
09c509ed | 1261 | } |
1262 | ||
617125a6 | 1263 | /* All deferred character length procedures need to retain the backend |
1264 | decl, which is a pointer to the character length in the caller's | |
1265 | namespace and to declare a local character length. */ | |
1266 | if (!byref && sym->attr.function | |
1267 | && sym->ts.type == BT_CHARACTER | |
1268 | && sym->ts.deferred | |
1269 | && sym->ts.u.cl->passed_length == NULL | |
1270 | && sym->ts.u.cl->backend_decl | |
1271 | && TREE_CODE (sym->ts.u.cl->backend_decl) == PARM_DECL) | |
1272 | { | |
1273 | sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1274 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1275 | length = gfc_create_string_length (sym); | |
1276 | } | |
1277 | ||
8b9eb27e | 1278 | fun_or_res = byref && (sym->attr.result |
1279 | || (sym->attr.function && sym->ts.deferred)); | |
1280 | if ((sym->attr.dummy && ! sym->attr.function) || fun_or_res) | |
4ee9c684 | 1281 | { |
1282 | /* Return via extra parameter. */ | |
1283 | if (sym->attr.result && byref | |
1284 | && !sym->backend_decl) | |
1285 | { | |
1286 | sym->backend_decl = | |
1287 | DECL_ARGUMENTS (sym->ns->proc_name->backend_decl); | |
c6871095 | 1288 | /* For entry master function skip over the __entry |
1289 | argument. */ | |
1290 | if (sym->ns->proc_name->attr.entry_master) | |
1767a056 | 1291 | sym->backend_decl = DECL_CHAIN (sym->backend_decl); |
4ee9c684 | 1292 | } |
1293 | ||
1294 | /* Dummy variables should already have been created. */ | |
22d678e8 | 1295 | gcc_assert (sym->backend_decl); |
4ee9c684 | 1296 | |
1297 | /* Create a character length variable. */ | |
1298 | if (sym->ts.type == BT_CHARACTER) | |
1299 | { | |
617125a6 | 1300 | /* For a deferred dummy, make a new string length variable. */ |
1301 | if (sym->ts.deferred | |
1302 | && | |
1303 | (sym->ts.u.cl->passed_length == sym->ts.u.cl->backend_decl)) | |
1304 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1305 | ||
8b9eb27e | 1306 | if (sym->ts.deferred && fun_or_res |
617125a6 | 1307 | && sym->ts.u.cl->passed_length == NULL |
1308 | && sym->ts.u.cl->backend_decl) | |
1309 | { | |
1310 | sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1311 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1312 | } | |
1313 | ||
eeebe20b | 1314 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
d4163395 | 1315 | length = gfc_create_string_length (sym); |
1316 | else | |
eeebe20b | 1317 | length = sym->ts.u.cl->backend_decl; |
d4163395 | 1318 | if (TREE_CODE (length) == VAR_DECL |
16a40513 | 1319 | && DECL_FILE_SCOPE_P (length)) |
4ee9c684 | 1320 | { |
d95efb59 | 1321 | /* Add the string length to the same context as the symbol. */ |
1322 | if (DECL_CONTEXT (sym->backend_decl) == current_function_decl) | |
1323 | gfc_add_decl_to_function (length); | |
1324 | else | |
1325 | gfc_add_decl_to_parent_function (length); | |
1326 | ||
1327 | gcc_assert (DECL_CONTEXT (sym->backend_decl) == | |
1328 | DECL_CONTEXT (length)); | |
1329 | ||
d4163395 | 1330 | gfc_defer_symbol_init (sym); |
e8ff3944 | 1331 | } |
4ee9c684 | 1332 | } |
1333 | ||
1334 | /* Use a copy of the descriptor for dummy arrays. */ | |
7a777e43 | 1335 | if ((sym->attr.dimension || sym->attr.codimension) |
1336 | && !TREE_USED (sym->backend_decl)) | |
4ee9c684 | 1337 | { |
d95efb59 | 1338 | decl = gfc_build_dummy_array_decl (sym, sym->backend_decl); |
1339 | /* Prevent the dummy from being detected as unused if it is copied. */ | |
1340 | if (sym->backend_decl != NULL && decl != sym->backend_decl) | |
1341 | DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
1342 | sym->backend_decl = decl; | |
4ee9c684 | 1343 | } |
1344 | ||
1345 | TREE_USED (sym->backend_decl) = 1; | |
c8f1568f | 1346 | if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0) |
1347 | { | |
1348 | gfc_add_assign_aux_vars (sym); | |
1349 | } | |
9579733e | 1350 | |
1351 | if (sym->attr.dimension | |
1352 | && DECL_LANG_SPECIFIC (sym->backend_decl) | |
1353 | && GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl) | |
1354 | && DECL_CONTEXT (sym->backend_decl) != current_function_decl) | |
1355 | gfc_nonlocal_dummy_array_decl (sym); | |
1356 | ||
fd23cc08 | 1357 | if (sym->ts.type == BT_CLASS && sym->backend_decl) |
1358 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1359 | ||
1360 | if (sym->ts.type == BT_CLASS && sym->backend_decl) | |
1361 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1362 | return sym->backend_decl; | |
4ee9c684 | 1363 | } |
1364 | ||
1365 | if (sym->backend_decl) | |
1366 | return sym->backend_decl; | |
1367 | ||
a25debd0 | 1368 | /* Special case for array-valued named constants from intrinsic |
1369 | procedures; those are inlined. */ | |
1370 | if (sym->attr.use_assoc && sym->from_intmod | |
1371 | && sym->attr.flavor == FL_PARAMETER) | |
1372 | intrinsic_array_parameter = true; | |
1373 | ||
044bbd71 | 1374 | /* If use associated compilation, use the module |
094bca96 | 1375 | declaration. */ |
044bbd71 | 1376 | if ((sym->attr.flavor == FL_VARIABLE |
1377 | || sym->attr.flavor == FL_PARAMETER) | |
1378 | && sym->attr.use_assoc | |
1379 | && !intrinsic_array_parameter | |
1380 | && sym->module | |
1381 | && gfc_get_module_backend_decl (sym)) | |
fd23cc08 | 1382 | { |
1383 | if (sym->ts.type == BT_CLASS && sym->backend_decl) | |
1384 | GFC_DECL_CLASS(sym->backend_decl) = 1; | |
1385 | return sym->backend_decl; | |
1386 | } | |
7ea64434 | 1387 | |
4ee9c684 | 1388 | if (sym->attr.flavor == FL_PROCEDURE) |
1389 | { | |
77d080ca | 1390 | /* Catch functions. Only used for actual parameters, |
802532b9 | 1391 | procedure pointers and procptr initialization targets. */ |
77d080ca | 1392 | if (sym->attr.use_assoc || sym->attr.intrinsic |
1393 | || sym->attr.if_source != IFSRC_DECL) | |
802532b9 | 1394 | { |
1395 | decl = gfc_get_extern_function_decl (sym); | |
1396 | gfc_set_decl_location (decl, &sym->declared_at); | |
1397 | } | |
1398 | else | |
1399 | { | |
1400 | if (!sym->backend_decl) | |
1401 | build_function_decl (sym, false); | |
1402 | decl = sym->backend_decl; | |
1403 | } | |
4ee9c684 | 1404 | return decl; |
1405 | } | |
1406 | ||
1407 | if (sym->attr.intrinsic) | |
1408 | internal_error ("intrinsic variable which isn't a procedure"); | |
1409 | ||
1410 | /* Create string length decl first so that they can be used in the | |
1411 | type declaration. */ | |
1412 | if (sym->ts.type == BT_CHARACTER) | |
1413 | length = gfc_create_string_length (sym); | |
1414 | ||
1415 | /* Create the decl for the variable. */ | |
e60a6f7b | 1416 | decl = build_decl (sym->declared_at.lb->location, |
1417 | VAR_DECL, gfc_sym_identifier (sym), gfc_sym_type (sym)); | |
b31f705b | 1418 | |
1236e28b | 1419 | /* Add attributes to variables. Functions are handled elsewhere. */ |
1420 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); | |
1421 | decl_attributes (&decl, attributes, 0); | |
1422 | ||
f888a3fb | 1423 | /* Symbols from modules should have their assembler names mangled. |
4ee9c684 | 1424 | This is done here rather than in gfc_finish_var_decl because it |
1425 | is different for string length variables. */ | |
4f0fae8e | 1426 | if (sym->module) |
df4d540f | 1427 | { |
1236e28b | 1428 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); |
cd2c99b8 | 1429 | if (sym->attr.use_assoc && !intrinsic_array_parameter) |
df4d540f | 1430 | DECL_IGNORED_P (decl) = 1; |
1431 | } | |
4ee9c684 | 1432 | |
bc5663df | 1433 | if (sym->attr.select_type_temporary) |
1434 | { | |
1435 | DECL_ARTIFICIAL (decl) = 1; | |
1436 | DECL_IGNORED_P (decl) = 1; | |
1437 | } | |
1438 | ||
7a777e43 | 1439 | if (sym->attr.dimension || sym->attr.codimension) |
4ee9c684 | 1440 | { |
1441 | /* Create variables to hold the non-constant bits of array info. */ | |
1442 | gfc_build_qualified_array (decl, sym); | |
1443 | ||
b3c3927c | 1444 | if (sym->attr.contiguous |
1445 | || ((sym->attr.allocatable || !sym->attr.dummy) && !sym->attr.pointer)) | |
4ee9c684 | 1446 | GFC_DECL_PACKED_ARRAY (decl) = 1; |
1447 | } | |
1448 | ||
0a96a7cc | 1449 | /* Remember this variable for allocation/cleanup. */ |
7c7db7f6 | 1450 | if (sym->attr.dimension || sym->attr.allocatable || sym->attr.codimension |
0a96a7cc | 1451 | || (sym->ts.type == BT_CLASS && |
50b4b37b | 1452 | (CLASS_DATA (sym)->attr.dimension |
1453 | || CLASS_DATA (sym)->attr.allocatable)) | |
6b3ceb4e | 1454 | || (sym->ts.type == BT_DERIVED |
1455 | && (sym->ts.u.derived->attr.alloc_comp | |
1456 | || (!sym->attr.pointer && !sym->attr.artificial && !sym->attr.save | |
1457 | && !sym->ns->proc_name->attr.is_main_program | |
1458 | && gfc_is_finalizable (sym->ts.u.derived, NULL)))) | |
0a96a7cc | 1459 | /* This applies a derived type default initializer. */ |
1460 | || (sym->ts.type == BT_DERIVED | |
1461 | && sym->attr.save == SAVE_NONE | |
1462 | && !sym->attr.data | |
1463 | && !sym->attr.allocatable | |
1464 | && (sym->value && !sym->ns->proc_name->attr.is_main_program) | |
cd2c99b8 | 1465 | && !(sym->attr.use_assoc && !intrinsic_array_parameter))) |
f0d4969f | 1466 | gfc_defer_symbol_init (sym); |
2294b616 | 1467 | |
4ee9c684 | 1468 | gfc_finish_var_decl (decl, sym); |
1469 | ||
bda1f152 | 1470 | if (sym->ts.type == BT_CHARACTER) |
4ee9c684 | 1471 | { |
4ee9c684 | 1472 | /* Character variables need special handling. */ |
1473 | gfc_allocate_lang_decl (decl); | |
1474 | ||
bda1f152 | 1475 | if (TREE_CODE (length) != INTEGER_CST) |
4ee9c684 | 1476 | { |
4ee9c684 | 1477 | gfc_finish_var_decl (length, sym); |
22d678e8 | 1478 | gcc_assert (!sym->value); |
4ee9c684 | 1479 | } |
4ee9c684 | 1480 | } |
1033248c | 1481 | else if (sym->attr.subref_array_pointer) |
1482 | { | |
1483 | /* We need the span for these beasts. */ | |
1484 | gfc_allocate_lang_decl (decl); | |
1485 | } | |
1486 | ||
1487 | if (sym->attr.subref_array_pointer) | |
1488 | { | |
1489 | tree span; | |
1490 | GFC_DECL_SUBREF_ARRAY_P (decl) = 1; | |
e60a6f7b | 1491 | span = build_decl (input_location, |
1492 | VAR_DECL, create_tmp_var_name ("span"), | |
1033248c | 1493 | gfc_array_index_type); |
1494 | gfc_finish_var_decl (span, sym); | |
6180d82a | 1495 | TREE_STATIC (span) = TREE_STATIC (decl); |
1496 | DECL_ARTIFICIAL (span) = 1; | |
1033248c | 1497 | |
1498 | GFC_DECL_SPAN (decl) = span; | |
6180d82a | 1499 | GFC_TYPE_ARRAY_SPAN (TREE_TYPE (decl)) = span; |
1033248c | 1500 | } |
1501 | ||
fd23cc08 | 1502 | if (sym->ts.type == BT_CLASS) |
1503 | GFC_DECL_CLASS(decl) = 1; | |
1504 | ||
4ee9c684 | 1505 | sym->backend_decl = decl; |
1506 | ||
c8f1568f | 1507 | if (sym->attr.assign) |
21ebda4d | 1508 | gfc_add_assign_aux_vars (sym); |
c8f1568f | 1509 | |
cd2c99b8 | 1510 | if (intrinsic_array_parameter) |
1511 | { | |
1512 | TREE_STATIC (decl) = 1; | |
1513 | DECL_EXTERNAL (decl) = 0; | |
1514 | } | |
1515 | ||
1516 | if (TREE_STATIC (decl) | |
1517 | && !(sym->attr.use_assoc && !intrinsic_array_parameter) | |
a545a8f8 | 1518 | && (sym->attr.save || sym->ns->proc_name->attr.is_main_program |
1519 | || gfc_option.flag_max_stack_var_size == 0 | |
a961ca30 | 1520 | || sym->attr.data || sym->ns->proc_name->attr.flavor == FL_MODULE) |
0d3bb1de | 1521 | && (gfc_option.coarray != GFC_FCOARRAY_LIB |
1522 | || !sym->attr.codimension || sym->attr.allocatable)) | |
a545a8f8 | 1523 | { |
1524 | /* Add static initializer. For procedures, it is only needed if | |
1525 | SAVE is specified otherwise they need to be reinitialized | |
1526 | every time the procedure is entered. The TREE_STATIC is | |
1527 | in this case due to -fmax-stack-var-size=. */ | |
2e42c60f | 1528 | |
bda1f152 | 1529 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
2e42c60f | 1530 | TREE_TYPE (decl), sym->attr.dimension |
1531 | || (sym->attr.codimension | |
1532 | && sym->attr.allocatable), | |
1533 | sym->attr.pointer || sym->attr.allocatable | |
1534 | || sym->ts.type == BT_CLASS, | |
1535 | sym->attr.proc_pointer); | |
bda1f152 | 1536 | } |
1537 | ||
9579733e | 1538 | if (!TREE_STATIC (decl) |
1539 | && POINTER_TYPE_P (TREE_TYPE (decl)) | |
1540 | && !sym->attr.pointer | |
1541 | && !sym->attr.allocatable | |
bc5663df | 1542 | && !sym->attr.proc_pointer |
1543 | && !sym->attr.select_type_temporary) | |
9579733e | 1544 | DECL_BY_REFERENCE (decl) = 1; |
1545 | ||
cf5f881f | 1546 | if (sym->attr.associate_var) |
1547 | GFC_DECL_ASSOCIATE_VAR_P (decl) = 1; | |
1548 | ||
ebad7c3e | 1549 | if (sym->attr.vtab |
1550 | || (sym->name[0] == '_' && strncmp ("__def_init", sym->name, 10) == 0)) | |
4c197fd0 | 1551 | TREE_READONLY (decl) = 1; |
ebad7c3e | 1552 | |
4ee9c684 | 1553 | return decl; |
1554 | } | |
1555 | ||
1556 | ||
dbe60343 | 1557 | /* Substitute a temporary variable in place of the real one. */ |
1558 | ||
1559 | void | |
1560 | gfc_shadow_sym (gfc_symbol * sym, tree decl, gfc_saved_var * save) | |
1561 | { | |
1562 | save->attr = sym->attr; | |
1563 | save->decl = sym->backend_decl; | |
1564 | ||
1565 | gfc_clear_attr (&sym->attr); | |
1566 | sym->attr.referenced = 1; | |
1567 | sym->attr.flavor = FL_VARIABLE; | |
1568 | ||
1569 | sym->backend_decl = decl; | |
1570 | } | |
1571 | ||
1572 | ||
1573 | /* Restore the original variable. */ | |
1574 | ||
1575 | void | |
1576 | gfc_restore_sym (gfc_symbol * sym, gfc_saved_var * save) | |
1577 | { | |
1578 | sym->attr = save->attr; | |
1579 | sym->backend_decl = save->decl; | |
1580 | } | |
1581 | ||
1582 | ||
cad0ddcf | 1583 | /* Declare a procedure pointer. */ |
1584 | ||
1585 | static tree | |
1586 | get_proc_pointer_decl (gfc_symbol *sym) | |
1587 | { | |
1588 | tree decl; | |
36b0a1b0 | 1589 | tree attributes; |
cad0ddcf | 1590 | |
1591 | decl = sym->backend_decl; | |
1592 | if (decl) | |
1593 | return decl; | |
1594 | ||
e60a6f7b | 1595 | decl = build_decl (input_location, |
1596 | VAR_DECL, get_identifier (sym->name), | |
cad0ddcf | 1597 | build_pointer_type (gfc_get_function_type (sym))); |
1598 | ||
ea6f8461 | 1599 | if (sym->module) |
1600 | { | |
1601 | /* Apply name mangling. */ | |
1602 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); | |
1603 | if (sym->attr.use_assoc) | |
1604 | DECL_IGNORED_P (decl) = 1; | |
1605 | } | |
a90fe829 | 1606 | |
e72f979a | 1607 | if ((sym->ns->proc_name |
1608 | && sym->ns->proc_name->backend_decl == current_function_decl) | |
cad0ddcf | 1609 | || sym->attr.contained) |
1610 | gfc_add_decl_to_function (decl); | |
cf269acc | 1611 | else if (sym->ns->proc_name->attr.flavor != FL_MODULE) |
cad0ddcf | 1612 | gfc_add_decl_to_parent_function (decl); |
1613 | ||
1614 | sym->backend_decl = decl; | |
1615 | ||
cf269acc | 1616 | /* If a variable is USE associated, it's always external. */ |
1617 | if (sym->attr.use_assoc) | |
1618 | { | |
1619 | DECL_EXTERNAL (decl) = 1; | |
1620 | TREE_PUBLIC (decl) = 1; | |
1621 | } | |
1622 | else if (sym->module && sym->ns->proc_name->attr.flavor == FL_MODULE) | |
1623 | { | |
1624 | /* This is the declaration of a module variable. */ | |
1625 | TREE_PUBLIC (decl) = 1; | |
1626 | TREE_STATIC (decl) = 1; | |
1627 | } | |
1628 | ||
cad0ddcf | 1629 | if (!sym->attr.use_assoc |
1630 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
1631 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
1632 | TREE_STATIC (decl) = 1; | |
1633 | ||
1634 | if (TREE_STATIC (decl) && sym->value) | |
1635 | { | |
1636 | /* Add static initializer. */ | |
1637 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
802532b9 | 1638 | TREE_TYPE (decl), |
1639 | sym->attr.dimension, | |
1640 | false, true); | |
cad0ddcf | 1641 | } |
1642 | ||
8fb1768c | 1643 | /* Handle threadprivate procedure pointers. */ |
1644 | if (sym->attr.threadprivate | |
1645 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) | |
1646 | DECL_TLS_MODEL (decl) = decl_default_tls_model (decl); | |
1647 | ||
36b0a1b0 | 1648 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1649 | decl_attributes (&decl, attributes, 0); | |
1650 | ||
cad0ddcf | 1651 | return decl; |
1652 | } | |
1653 | ||
1654 | ||
4ee9c684 | 1655 | /* Get a basic decl for an external function. */ |
1656 | ||
1657 | tree | |
1658 | gfc_get_extern_function_decl (gfc_symbol * sym) | |
1659 | { | |
1660 | tree type; | |
1661 | tree fndecl; | |
36b0a1b0 | 1662 | tree attributes; |
4ee9c684 | 1663 | gfc_expr e; |
1664 | gfc_intrinsic_sym *isym; | |
1665 | gfc_expr argexpr; | |
17000b91 | 1666 | char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */ |
4ee9c684 | 1667 | tree name; |
1668 | tree mangled_name; | |
83aeedb9 | 1669 | gfc_gsymbol *gsym; |
4ee9c684 | 1670 | |
1671 | if (sym->backend_decl) | |
1672 | return sym->backend_decl; | |
1673 | ||
1b716045 | 1674 | /* We should never be creating external decls for alternate entry points. |
1675 | The procedure may be an alternate entry point, but we don't want/need | |
1676 | to know that. */ | |
22d678e8 | 1677 | gcc_assert (!(sym->attr.entry || sym->attr.entry_master)); |
1b716045 | 1678 | |
cad0ddcf | 1679 | if (sym->attr.proc_pointer) |
1680 | return get_proc_pointer_decl (sym); | |
1681 | ||
83aeedb9 | 1682 | /* See if this is an external procedure from the same file. If so, |
1683 | return the backend_decl. */ | |
da5c730d | 1684 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->binding_label |
1685 | ? sym->binding_label : sym->name); | |
83aeedb9 | 1686 | |
c8b913ab | 1687 | if (gsym && !gsym->defined) |
1688 | gsym = NULL; | |
1689 | ||
1690 | /* This can happen because of C binding. */ | |
1691 | if (gsym && gsym->ns && gsym->ns->proc_name | |
1692 | && gsym->ns->proc_name->attr.flavor == FL_MODULE) | |
1693 | goto module_sym; | |
1694 | ||
044bbd71 | 1695 | if ((!sym->attr.use_assoc || sym->attr.if_source != IFSRC_DECL) |
1696 | && !sym->backend_decl | |
1697 | && gsym && gsym->ns | |
1698 | && ((gsym->type == GSYM_SUBROUTINE) || (gsym->type == GSYM_FUNCTION)) | |
1699 | && (gsym->ns->proc_name->backend_decl || !sym->attr.intrinsic)) | |
83aeedb9 | 1700 | { |
d896f9b3 | 1701 | if (!gsym->ns->proc_name->backend_decl) |
1702 | { | |
1703 | /* By construction, the external function cannot be | |
1704 | a contained procedure. */ | |
1705 | locus old_loc; | |
d896f9b3 | 1706 | |
4671339c | 1707 | gfc_save_backend_locus (&old_loc); |
9078126c | 1708 | push_cfun (NULL); |
d896f9b3 | 1709 | |
1710 | gfc_create_function_decl (gsym->ns, true); | |
1711 | ||
1712 | pop_cfun (); | |
4671339c | 1713 | gfc_restore_backend_locus (&old_loc); |
d896f9b3 | 1714 | } |
1715 | ||
83aeedb9 | 1716 | /* If the namespace has entries, the proc_name is the |
1717 | entry master. Find the entry and use its backend_decl. | |
1718 | otherwise, use the proc_name backend_decl. */ | |
1719 | if (gsym->ns->entries) | |
1720 | { | |
1721 | gfc_entry_list *entry = gsym->ns->entries; | |
1722 | ||
1723 | for (; entry; entry = entry->next) | |
1724 | { | |
1725 | if (strcmp (gsym->name, entry->sym->name) == 0) | |
1726 | { | |
1727 | sym->backend_decl = entry->sym->backend_decl; | |
1728 | break; | |
1729 | } | |
1730 | } | |
1731 | } | |
1732 | else | |
40c74b02 | 1733 | sym->backend_decl = gsym->ns->proc_name->backend_decl; |
83aeedb9 | 1734 | |
1735 | if (sym->backend_decl) | |
40c74b02 | 1736 | { |
1737 | /* Avoid problems of double deallocation of the backend declaration | |
1738 | later in gfc_trans_use_stmts; cf. PR 45087. */ | |
1739 | if (sym->attr.if_source != IFSRC_DECL && sym->attr.use_assoc) | |
1740 | sym->attr.use_assoc = 0; | |
1741 | ||
1742 | return sym->backend_decl; | |
1743 | } | |
83aeedb9 | 1744 | } |
1745 | ||
7ea64434 | 1746 | /* See if this is a module procedure from the same file. If so, |
1747 | return the backend_decl. */ | |
1748 | if (sym->module) | |
1749 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
1750 | ||
c8b913ab | 1751 | module_sym: |
1752 | if (gsym && gsym->ns | |
1753 | && (gsym->type == GSYM_MODULE | |
1754 | || (gsym->ns->proc_name && gsym->ns->proc_name->attr.flavor == FL_MODULE))) | |
7ea64434 | 1755 | { |
1756 | gfc_symbol *s; | |
1757 | ||
1758 | s = NULL; | |
c8b913ab | 1759 | if (gsym->type == GSYM_MODULE) |
1760 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
1761 | else | |
1762 | gfc_find_symbol (gsym->sym_name, gsym->ns, 0, &s); | |
1763 | ||
7ea64434 | 1764 | if (s && s->backend_decl) |
1765 | { | |
85ec2f13 | 1766 | if (sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS) |
1767 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, | |
1768 | true); | |
1769 | else if (sym->ts.type == BT_CHARACTER) | |
1770 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
7ea64434 | 1771 | sym->backend_decl = s->backend_decl; |
1772 | return sym->backend_decl; | |
1773 | } | |
1774 | } | |
1775 | ||
4ee9c684 | 1776 | if (sym->attr.intrinsic) |
1777 | { | |
1778 | /* Call the resolution function to get the actual name. This is | |
1779 | a nasty hack which relies on the resolution functions only looking | |
1780 | at the first argument. We pass NULL for the second argument | |
1781 | otherwise things like AINT get confused. */ | |
1782 | isym = gfc_find_function (sym->name); | |
22d678e8 | 1783 | gcc_assert (isym->resolve.f0 != NULL); |
4ee9c684 | 1784 | |
1785 | memset (&e, 0, sizeof (e)); | |
1786 | e.expr_type = EXPR_FUNCTION; | |
1787 | ||
1788 | memset (&argexpr, 0, sizeof (argexpr)); | |
22d678e8 | 1789 | gcc_assert (isym->formal); |
4ee9c684 | 1790 | argexpr.ts = isym->formal->ts; |
1791 | ||
1792 | if (isym->formal->next == NULL) | |
1793 | isym->resolve.f1 (&e, &argexpr); | |
1794 | else | |
1795 | { | |
37e0271a | 1796 | if (isym->formal->next->next == NULL) |
1797 | isym->resolve.f2 (&e, &argexpr, NULL); | |
1798 | else | |
1799 | { | |
7fe55cc9 | 1800 | if (isym->formal->next->next->next == NULL) |
1801 | isym->resolve.f3 (&e, &argexpr, NULL, NULL); | |
1802 | else | |
1803 | { | |
1804 | /* All specific intrinsics take less than 5 arguments. */ | |
1805 | gcc_assert (isym->formal->next->next->next->next == NULL); | |
1806 | isym->resolve.f4 (&e, &argexpr, NULL, NULL, NULL); | |
1807 | } | |
37e0271a | 1808 | } |
4ee9c684 | 1809 | } |
bdaed7d2 | 1810 | |
1811 | if (gfc_option.flag_f2c | |
1812 | && ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind) | |
1813 | || e.ts.type == BT_COMPLEX)) | |
1814 | { | |
1815 | /* Specific which needs a different implementation if f2c | |
1816 | calling conventions are used. */ | |
17000b91 | 1817 | sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name); |
bdaed7d2 | 1818 | } |
1819 | else | |
17000b91 | 1820 | sprintf (s, "_gfortran_specific%s", e.value.function.name); |
bdaed7d2 | 1821 | |
4ee9c684 | 1822 | name = get_identifier (s); |
1823 | mangled_name = name; | |
1824 | } | |
1825 | else | |
1826 | { | |
1827 | name = gfc_sym_identifier (sym); | |
1828 | mangled_name = gfc_sym_mangled_function_id (sym); | |
1829 | } | |
1830 | ||
1831 | type = gfc_get_function_type (sym); | |
e60a6f7b | 1832 | fndecl = build_decl (input_location, |
1833 | FUNCTION_DECL, name, type); | |
4ee9c684 | 1834 | |
e27454ee | 1835 | /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; |
1836 | TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
851d9296 | 1837 | the opposite of declaring a function as static in C). */ |
e27454ee | 1838 | DECL_EXTERNAL (fndecl) = 1; |
1839 | TREE_PUBLIC (fndecl) = 1; | |
1840 | ||
1236e28b | 1841 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1842 | decl_attributes (&fndecl, attributes, 0); | |
1843 | ||
1844 | gfc_set_decl_assembler_name (fndecl, mangled_name); | |
4ee9c684 | 1845 | |
1846 | /* Set the context of this decl. */ | |
1847 | if (0 && sym->ns && sym->ns->proc_name) | |
1848 | { | |
1849 | /* TODO: Add external decls to the appropriate scope. */ | |
1850 | DECL_CONTEXT (fndecl) = sym->ns->proc_name->backend_decl; | |
1851 | } | |
1852 | else | |
1853 | { | |
f888a3fb | 1854 | /* Global declaration, e.g. intrinsic subroutine. */ |
4ee9c684 | 1855 | DECL_CONTEXT (fndecl) = NULL_TREE; |
1856 | } | |
1857 | ||
4ee9c684 | 1858 | /* Set attributes for PURE functions. A call to PURE function in the |
1859 | Fortran 95 sense is both pure and without side effects in the C | |
1860 | sense. */ | |
bead0399 | 1861 | if (sym->attr.pure || sym->attr.implicit_pure) |
4ee9c684 | 1862 | { |
4d4b9f0e | 1863 | if (sym->attr.function && !gfc_return_by_reference (sym)) |
9c2a0c05 | 1864 | DECL_PURE_P (fndecl) = 1; |
be393645 | 1865 | /* TODO: check if pure SUBROUTINEs don't have INTENT(OUT) |
1866 | parameters and don't use alternate returns (is this | |
1867 | allowed?). In that case, calls to them are meaningless, and | |
1b716045 | 1868 | can be optimized away. See also in build_function_decl(). */ |
be393645 | 1869 | TREE_SIDE_EFFECTS (fndecl) = 0; |
4ee9c684 | 1870 | } |
1871 | ||
6e27d773 | 1872 | /* Mark non-returning functions. */ |
1873 | if (sym->attr.noreturn) | |
1874 | TREE_THIS_VOLATILE(fndecl) = 1; | |
1875 | ||
4ee9c684 | 1876 | sym->backend_decl = fndecl; |
1877 | ||
1878 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1879 | pushdecl_top_level (fndecl); | |
1880 | ||
15b28553 | 1881 | if (sym->formal_ns |
1882 | && sym->formal_ns->proc_name == sym | |
1883 | && sym->formal_ns->omp_declare_simd) | |
1884 | gfc_trans_omp_declare_simd (sym->formal_ns); | |
1885 | ||
4ee9c684 | 1886 | return fndecl; |
1887 | } | |
1888 | ||
1889 | ||
1890 | /* Create a declaration for a procedure. For external functions (in the C | |
1b716045 | 1891 | sense) use gfc_get_extern_function_decl. HAS_ENTRIES is true if this is |
1892 | a master function with alternate entry points. */ | |
4ee9c684 | 1893 | |
1b716045 | 1894 | static void |
d896f9b3 | 1895 | build_function_decl (gfc_symbol * sym, bool global) |
4ee9c684 | 1896 | { |
36b0a1b0 | 1897 | tree fndecl, type, attributes; |
4ee9c684 | 1898 | symbol_attribute attr; |
1b716045 | 1899 | tree result_decl; |
4ee9c684 | 1900 | gfc_formal_arglist *f; |
1901 | ||
22d678e8 | 1902 | gcc_assert (!sym->attr.external); |
4ee9c684 | 1903 | |
802532b9 | 1904 | if (sym->backend_decl) |
1905 | return; | |
1906 | ||
b31f705b | 1907 | /* Set the line and filename. sym->declared_at seems to point to the |
1908 | last statement for subroutines, but it'll do for now. */ | |
1909 | gfc_set_backend_locus (&sym->declared_at); | |
1910 | ||
4ee9c684 | 1911 | /* Allow only one nesting level. Allow public declarations. */ |
22d678e8 | 1912 | gcc_assert (current_function_decl == NULL_TREE |
16a40513 | 1913 | || DECL_FILE_SCOPE_P (current_function_decl) |
1914 | || (TREE_CODE (DECL_CONTEXT (current_function_decl)) | |
1915 | == NAMESPACE_DECL)); | |
4ee9c684 | 1916 | |
1917 | type = gfc_get_function_type (sym); | |
e60a6f7b | 1918 | fndecl = build_decl (input_location, |
1919 | FUNCTION_DECL, gfc_sym_identifier (sym), type); | |
4ee9c684 | 1920 | |
1236e28b | 1921 | attr = sym->attr; |
1922 | ||
e27454ee | 1923 | /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; |
1924 | TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
851d9296 | 1925 | the opposite of declaring a function as static in C). */ |
e27454ee | 1926 | DECL_EXTERNAL (fndecl) = 0; |
1927 | ||
7d6b5754 | 1928 | if (sym->attr.access == ACCESS_UNKNOWN && sym->module |
1929 | && (sym->ns->default_access == ACCESS_PRIVATE | |
1930 | || (sym->ns->default_access == ACCESS_UNKNOWN | |
1931 | && gfc_option.flag_module_private))) | |
1932 | sym->attr.access = ACCESS_PRIVATE; | |
1933 | ||
e27454ee | 1934 | if (!current_function_decl |
c5cb468c | 1935 | && !sym->attr.entry_master && !sym->attr.is_main_program |
b1f74325 | 1936 | && (sym->attr.access != ACCESS_PRIVATE || sym->binding_label |
1937 | || sym->attr.public_used)) | |
e27454ee | 1938 | TREE_PUBLIC (fndecl) = 1; |
1939 | ||
9e45357a | 1940 | if (sym->attr.referenced || sym->attr.entry_master) |
1941 | TREE_USED (fndecl) = 1; | |
1942 | ||
1236e28b | 1943 | attributes = add_attributes_to_decl (attr, NULL_TREE); |
1944 | decl_attributes (&fndecl, attributes, 0); | |
1945 | ||
4ee9c684 | 1946 | /* Figure out the return type of the declared function, and build a |
f888a3fb | 1947 | RESULT_DECL for it. If this is a subroutine with alternate |
4ee9c684 | 1948 | returns, build a RESULT_DECL for it. */ |
4ee9c684 | 1949 | result_decl = NULL_TREE; |
1950 | /* TODO: Shouldn't this just be TREE_TYPE (TREE_TYPE (fndecl)). */ | |
1951 | if (attr.function) | |
1952 | { | |
1953 | if (gfc_return_by_reference (sym)) | |
1954 | type = void_type_node; | |
1955 | else | |
1956 | { | |
1957 | if (sym->result != sym) | |
1958 | result_decl = gfc_sym_identifier (sym->result); | |
1959 | ||
1960 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
1961 | } | |
1962 | } | |
1963 | else | |
1964 | { | |
1965 | /* Look for alternate return placeholders. */ | |
1966 | int has_alternate_returns = 0; | |
6777213b | 1967 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
4ee9c684 | 1968 | { |
1969 | if (f->sym == NULL) | |
1970 | { | |
1971 | has_alternate_returns = 1; | |
1972 | break; | |
1973 | } | |
1974 | } | |
1975 | ||
1976 | if (has_alternate_returns) | |
1977 | type = integer_type_node; | |
1978 | else | |
1979 | type = void_type_node; | |
1980 | } | |
1981 | ||
e60a6f7b | 1982 | result_decl = build_decl (input_location, |
1983 | RESULT_DECL, result_decl, type); | |
540edea7 | 1984 | DECL_ARTIFICIAL (result_decl) = 1; |
1985 | DECL_IGNORED_P (result_decl) = 1; | |
4ee9c684 | 1986 | DECL_CONTEXT (result_decl) = fndecl; |
1987 | DECL_RESULT (fndecl) = result_decl; | |
1988 | ||
1989 | /* Don't call layout_decl for a RESULT_DECL. | |
f888a3fb | 1990 | layout_decl (result_decl, 0); */ |
4ee9c684 | 1991 | |
4ee9c684 | 1992 | /* TREE_STATIC means the function body is defined here. */ |
e4b2c26c | 1993 | TREE_STATIC (fndecl) = 1; |
4ee9c684 | 1994 | |
f888a3fb | 1995 | /* Set attributes for PURE functions. A call to a PURE function in the |
4ee9c684 | 1996 | Fortran 95 sense is both pure and without side effects in the C |
1997 | sense. */ | |
bead0399 | 1998 | if (attr.pure || attr.implicit_pure) |
4ee9c684 | 1999 | { |
be393645 | 2000 | /* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments |
a0527218 | 2001 | including an alternate return. In that case it can also be |
231e961a | 2002 | marked as PURE. See also in gfc_get_extern_function_decl(). */ |
4c319962 | 2003 | if (attr.function && !gfc_return_by_reference (sym)) |
9c2a0c05 | 2004 | DECL_PURE_P (fndecl) = 1; |
4ee9c684 | 2005 | TREE_SIDE_EFFECTS (fndecl) = 0; |
2006 | } | |
2007 | ||
36b0a1b0 | 2008 | |
4ee9c684 | 2009 | /* Layout the function declaration and put it in the binding level |
2010 | of the current function. */ | |
d896f9b3 | 2011 | |
4c197fd0 | 2012 | if (global) |
d896f9b3 | 2013 | pushdecl_top_level (fndecl); |
2014 | else | |
2015 | pushdecl (fndecl); | |
1b716045 | 2016 | |
16a40513 | 2017 | /* Perform name mangling if this is a top level or module procedure. */ |
2018 | if (current_function_decl == NULL_TREE) | |
2019 | gfc_set_decl_assembler_name (fndecl, gfc_sym_mangled_function_id (sym)); | |
2020 | ||
1b716045 | 2021 | sym->backend_decl = fndecl; |
2022 | } | |
2023 | ||
2024 | ||
2025 | /* Create the DECL_ARGUMENTS for a procedure. */ | |
2026 | ||
2027 | static void | |
2028 | create_function_arglist (gfc_symbol * sym) | |
2029 | { | |
2030 | tree fndecl; | |
2031 | gfc_formal_arglist *f; | |
d4163395 | 2032 | tree typelist, hidden_typelist; |
2033 | tree arglist, hidden_arglist; | |
1b716045 | 2034 | tree type; |
2035 | tree parm; | |
2036 | ||
2037 | fndecl = sym->backend_decl; | |
2038 | ||
e4b2c26c | 2039 | /* Build formal argument list. Make sure that their TREE_CONTEXT is |
2040 | the new FUNCTION_DECL node. */ | |
e4b2c26c | 2041 | arglist = NULL_TREE; |
d4163395 | 2042 | hidden_arglist = NULL_TREE; |
e4b2c26c | 2043 | typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
1b716045 | 2044 | |
2045 | if (sym->attr.entry_master) | |
2046 | { | |
2047 | type = TREE_VALUE (typelist); | |
e60a6f7b | 2048 | parm = build_decl (input_location, |
2049 | PARM_DECL, get_identifier ("__entry"), type); | |
a90fe829 | 2050 | |
1b716045 | 2051 | DECL_CONTEXT (parm) = fndecl; |
2052 | DECL_ARG_TYPE (parm) = type; | |
2053 | TREE_READONLY (parm) = 1; | |
b9c7fce7 | 2054 | gfc_finish_decl (parm); |
d95efb59 | 2055 | DECL_ARTIFICIAL (parm) = 1; |
1b716045 | 2056 | |
2057 | arglist = chainon (arglist, parm); | |
2058 | typelist = TREE_CHAIN (typelist); | |
2059 | } | |
2060 | ||
e4b2c26c | 2061 | if (gfc_return_by_reference (sym)) |
4ee9c684 | 2062 | { |
d4163395 | 2063 | tree type = TREE_VALUE (typelist), length = NULL; |
4ee9c684 | 2064 | |
e4b2c26c | 2065 | if (sym->ts.type == BT_CHARACTER) |
2066 | { | |
e4b2c26c | 2067 | /* Length of character result. */ |
d4163395 | 2068 | tree len_type = TREE_VALUE (TREE_CHAIN (typelist)); |
4ee9c684 | 2069 | |
e60a6f7b | 2070 | length = build_decl (input_location, |
2071 | PARM_DECL, | |
e4b2c26c | 2072 | get_identifier (".__result"), |
d4163395 | 2073 | len_type); |
eeebe20b | 2074 | if (!sym->ts.u.cl->length) |
e4b2c26c | 2075 | { |
eeebe20b | 2076 | sym->ts.u.cl->backend_decl = length; |
e4b2c26c | 2077 | TREE_USED (length) = 1; |
4ee9c684 | 2078 | } |
22d678e8 | 2079 | gcc_assert (TREE_CODE (length) == PARM_DECL); |
e4b2c26c | 2080 | DECL_CONTEXT (length) = fndecl; |
d4163395 | 2081 | DECL_ARG_TYPE (length) = len_type; |
e4b2c26c | 2082 | TREE_READONLY (length) = 1; |
b5b40b3f | 2083 | DECL_ARTIFICIAL (length) = 1; |
b9c7fce7 | 2084 | gfc_finish_decl (length); |
eeebe20b | 2085 | if (sym->ts.u.cl->backend_decl == NULL |
2086 | || sym->ts.u.cl->backend_decl == length) | |
d4163395 | 2087 | { |
2088 | gfc_symbol *arg; | |
2089 | tree backend_decl; | |
4ee9c684 | 2090 | |
eeebe20b | 2091 | if (sym->ts.u.cl->backend_decl == NULL) |
d4163395 | 2092 | { |
e60a6f7b | 2093 | tree len = build_decl (input_location, |
2094 | VAR_DECL, | |
d4163395 | 2095 | get_identifier ("..__result"), |
2096 | gfc_charlen_type_node); | |
2097 | DECL_ARTIFICIAL (len) = 1; | |
2098 | TREE_USED (len) = 1; | |
eeebe20b | 2099 | sym->ts.u.cl->backend_decl = len; |
d4163395 | 2100 | } |
4ee9c684 | 2101 | |
d4163395 | 2102 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ |
2103 | arg = sym->result ? sym->result : sym; | |
2104 | backend_decl = arg->backend_decl; | |
2105 | /* Temporary clear it, so that gfc_sym_type creates complete | |
2106 | type. */ | |
2107 | arg->backend_decl = NULL; | |
2108 | type = gfc_sym_type (arg); | |
2109 | arg->backend_decl = backend_decl; | |
2110 | type = build_reference_type (type); | |
2111 | } | |
2112 | } | |
4ee9c684 | 2113 | |
e60a6f7b | 2114 | parm = build_decl (input_location, |
2115 | PARM_DECL, get_identifier ("__result"), type); | |
4ee9c684 | 2116 | |
d4163395 | 2117 | DECL_CONTEXT (parm) = fndecl; |
2118 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2119 | TREE_READONLY (parm) = 1; | |
2120 | DECL_ARTIFICIAL (parm) = 1; | |
b9c7fce7 | 2121 | gfc_finish_decl (parm); |
4ee9c684 | 2122 | |
d4163395 | 2123 | arglist = chainon (arglist, parm); |
2124 | typelist = TREE_CHAIN (typelist); | |
4ee9c684 | 2125 | |
d4163395 | 2126 | if (sym->ts.type == BT_CHARACTER) |
2127 | { | |
2128 | gfc_allocate_lang_decl (parm); | |
2129 | arglist = chainon (arglist, length); | |
e4b2c26c | 2130 | typelist = TREE_CHAIN (typelist); |
2131 | } | |
2132 | } | |
4ee9c684 | 2133 | |
d4163395 | 2134 | hidden_typelist = typelist; |
6777213b | 2135 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
d4163395 | 2136 | if (f->sym != NULL) /* Ignore alternate returns. */ |
2137 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2138 | ||
6777213b | 2139 | for (f = gfc_sym_get_dummy_args (sym); f; f = f->next) |
e4b2c26c | 2140 | { |
2141 | char name[GFC_MAX_SYMBOL_LEN + 2]; | |
d4163395 | 2142 | |
e4b2c26c | 2143 | /* Ignore alternate returns. */ |
2144 | if (f->sym == NULL) | |
2145 | continue; | |
4ee9c684 | 2146 | |
e4b2c26c | 2147 | type = TREE_VALUE (typelist); |
4ee9c684 | 2148 | |
296db1d1 | 2149 | if (f->sym->ts.type == BT_CHARACTER |
2150 | && (!sym->attr.is_bind_c || sym->attr.entry_master)) | |
d4163395 | 2151 | { |
2152 | tree len_type = TREE_VALUE (hidden_typelist); | |
2153 | tree length = NULL_TREE; | |
617125a6 | 2154 | if (!f->sym->ts.deferred) |
2155 | gcc_assert (len_type == gfc_charlen_type_node); | |
2156 | else | |
2157 | gcc_assert (POINTER_TYPE_P (len_type)); | |
d4163395 | 2158 | |
2159 | strcpy (&name[1], f->sym->name); | |
2160 | name[0] = '_'; | |
e60a6f7b | 2161 | length = build_decl (input_location, |
2162 | PARM_DECL, get_identifier (name), len_type); | |
4ee9c684 | 2163 | |
d4163395 | 2164 | hidden_arglist = chainon (hidden_arglist, length); |
2165 | DECL_CONTEXT (length) = fndecl; | |
2166 | DECL_ARTIFICIAL (length) = 1; | |
2167 | DECL_ARG_TYPE (length) = len_type; | |
2168 | TREE_READONLY (length) = 1; | |
b9c7fce7 | 2169 | gfc_finish_decl (length); |
4ee9c684 | 2170 | |
a4abf8a0 | 2171 | /* Remember the passed value. */ |
a90fe829 | 2172 | if (!f->sym->ts.u.cl || f->sym->ts.u.cl->passed_length) |
6be7c32c | 2173 | { |
2174 | /* This can happen if the same type is used for multiple | |
2175 | arguments. We need to copy cl as otherwise | |
2176 | cl->passed_length gets overwritten. */ | |
d270ce52 | 2177 | f->sym->ts.u.cl = gfc_new_charlen (f->sym->ns, f->sym->ts.u.cl); |
6be7c32c | 2178 | } |
eeebe20b | 2179 | f->sym->ts.u.cl->passed_length = length; |
4ee9c684 | 2180 | |
d4163395 | 2181 | /* Use the passed value for assumed length variables. */ |
eeebe20b | 2182 | if (!f->sym->ts.u.cl->length) |
4ee9c684 | 2183 | { |
d4163395 | 2184 | TREE_USED (length) = 1; |
eeebe20b | 2185 | gcc_assert (!f->sym->ts.u.cl->backend_decl); |
2186 | f->sym->ts.u.cl->backend_decl = length; | |
d4163395 | 2187 | } |
2188 | ||
2189 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2190 | ||
eeebe20b | 2191 | if (f->sym->ts.u.cl->backend_decl == NULL |
2192 | || f->sym->ts.u.cl->backend_decl == length) | |
d4163395 | 2193 | { |
eeebe20b | 2194 | if (f->sym->ts.u.cl->backend_decl == NULL) |
d4163395 | 2195 | gfc_create_string_length (f->sym); |
2196 | ||
2197 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ | |
2198 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
2199 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2200 | else | |
2201 | type = gfc_sym_type (f->sym); | |
4ee9c684 | 2202 | } |
4ee9c684 | 2203 | } |
532c2d79 | 2204 | /* For noncharacter scalar intrinsic types, VALUE passes the value, |
1cdfcee9 | 2205 | hence, the optional status cannot be transferred via a NULL pointer. |
532c2d79 | 2206 | Thus, we will use a hidden argument in that case. */ |
2207 | else if (f->sym->attr.optional && f->sym->attr.value | |
68cc384e | 2208 | && !f->sym->attr.dimension && f->sym->ts.type != BT_CLASS |
532c2d79 | 2209 | && f->sym->ts.type != BT_DERIVED) |
2210 | { | |
2211 | tree tmp; | |
2212 | strcpy (&name[1], f->sym->name); | |
2213 | name[0] = '_'; | |
2214 | tmp = build_decl (input_location, | |
2215 | PARM_DECL, get_identifier (name), | |
2216 | boolean_type_node); | |
2217 | ||
2218 | hidden_arglist = chainon (hidden_arglist, tmp); | |
2219 | DECL_CONTEXT (tmp) = fndecl; | |
2220 | DECL_ARTIFICIAL (tmp) = 1; | |
2221 | DECL_ARG_TYPE (tmp) = boolean_type_node; | |
2222 | TREE_READONLY (tmp) = 1; | |
2223 | gfc_finish_decl (tmp); | |
2224 | } | |
4ee9c684 | 2225 | |
d4163395 | 2226 | /* For non-constant length array arguments, make sure they use |
2227 | a different type node from TYPE_ARG_TYPES type. */ | |
2228 | if (f->sym->attr.dimension | |
2229 | && type == TREE_VALUE (typelist) | |
2230 | && TREE_CODE (type) == POINTER_TYPE | |
2231 | && GFC_ARRAY_TYPE_P (type) | |
2232 | && f->sym->as->type != AS_ASSUMED_SIZE | |
2233 | && ! COMPLETE_TYPE_P (TREE_TYPE (type))) | |
2234 | { | |
2235 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
2236 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2237 | else | |
2238 | type = gfc_sym_type (f->sym); | |
2239 | } | |
2240 | ||
cad0ddcf | 2241 | if (f->sym->attr.proc_pointer) |
2242 | type = build_pointer_type (type); | |
2243 | ||
2364aa60 | 2244 | if (f->sym->attr.volatile_) |
2245 | type = build_qualified_type (type, TYPE_QUAL_VOLATILE); | |
2246 | ||
69b1505f | 2247 | /* Build the argument declaration. */ |
e60a6f7b | 2248 | parm = build_decl (input_location, |
2249 | PARM_DECL, gfc_sym_identifier (f->sym), type); | |
d4163395 | 2250 | |
2364aa60 | 2251 | if (f->sym->attr.volatile_) |
2252 | { | |
2253 | TREE_THIS_VOLATILE (parm) = 1; | |
2254 | TREE_SIDE_EFFECTS (parm) = 1; | |
2255 | } | |
2256 | ||
d4163395 | 2257 | /* Fill in arg stuff. */ |
2258 | DECL_CONTEXT (parm) = fndecl; | |
2259 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2260 | /* All implementation args are read-only. */ | |
2261 | TREE_READONLY (parm) = 1; | |
98923a84 | 2262 | if (POINTER_TYPE_P (type) |
2263 | && (!f->sym->attr.proc_pointer | |
2264 | && f->sym->attr.flavor != FL_PROCEDURE)) | |
2265 | DECL_BY_REFERENCE (parm) = 1; | |
d4163395 | 2266 | |
b9c7fce7 | 2267 | gfc_finish_decl (parm); |
cf5f881f | 2268 | gfc_finish_decl_attrs (parm, &f->sym->attr); |
d4163395 | 2269 | |
2270 | f->sym->backend_decl = parm; | |
2271 | ||
7dce33fe | 2272 | /* Coarrays which are descriptorless or assumed-shape pass with |
2273 | -fcoarray=lib the token and the offset as hidden arguments. */ | |
d44f2f7c | 2274 | if (gfc_option.coarray == GFC_FCOARRAY_LIB |
2275 | && ((f->sym->ts.type != BT_CLASS && f->sym->attr.codimension | |
2276 | && !f->sym->attr.allocatable) | |
2277 | || (f->sym->ts.type == BT_CLASS | |
2278 | && CLASS_DATA (f->sym)->attr.codimension | |
2279 | && !CLASS_DATA (f->sym)->attr.allocatable))) | |
85c94a64 | 2280 | { |
2281 | tree caf_type; | |
2282 | tree token; | |
2283 | tree offset; | |
2284 | ||
2285 | gcc_assert (f->sym->backend_decl != NULL_TREE | |
2286 | && !sym->attr.is_bind_c); | |
d44f2f7c | 2287 | caf_type = f->sym->ts.type == BT_CLASS |
2288 | ? TREE_TYPE (CLASS_DATA (f->sym)->backend_decl) | |
2289 | : TREE_TYPE (f->sym->backend_decl); | |
85c94a64 | 2290 | |
85c94a64 | 2291 | token = build_decl (input_location, PARM_DECL, |
2292 | create_tmp_var_name ("caf_token"), | |
2293 | build_qualified_type (pvoid_type_node, | |
2294 | TYPE_QUAL_RESTRICT)); | |
d44f2f7c | 2295 | if ((f->sym->ts.type != BT_CLASS |
2296 | && f->sym->as->type != AS_DEFERRED) | |
2297 | || (f->sym->ts.type == BT_CLASS | |
2298 | && CLASS_DATA (f->sym)->as->type != AS_DEFERRED)) | |
7dce33fe | 2299 | { |
2300 | gcc_assert (DECL_LANG_SPECIFIC (f->sym->backend_decl) == NULL | |
2301 | || GFC_DECL_TOKEN (f->sym->backend_decl) == NULL_TREE); | |
2302 | if (DECL_LANG_SPECIFIC (f->sym->backend_decl) == NULL) | |
2303 | gfc_allocate_lang_decl (f->sym->backend_decl); | |
2304 | GFC_DECL_TOKEN (f->sym->backend_decl) = token; | |
2305 | } | |
2306 | else | |
2307 | { | |
2308 | gcc_assert (GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) == NULL_TREE); | |
2309 | GFC_TYPE_ARRAY_CAF_TOKEN (caf_type) = token; | |
2310 | } | |
a90fe829 | 2311 | |
85c94a64 | 2312 | DECL_CONTEXT (token) = fndecl; |
2313 | DECL_ARTIFICIAL (token) = 1; | |
2314 | DECL_ARG_TYPE (token) = TREE_VALUE (typelist); | |
2315 | TREE_READONLY (token) = 1; | |
2316 | hidden_arglist = chainon (hidden_arglist, token); | |
2317 | gfc_finish_decl (token); | |
2318 | ||
85c94a64 | 2319 | offset = build_decl (input_location, PARM_DECL, |
2320 | create_tmp_var_name ("caf_offset"), | |
2321 | gfc_array_index_type); | |
2322 | ||
d44f2f7c | 2323 | if ((f->sym->ts.type != BT_CLASS |
2324 | && f->sym->as->type != AS_DEFERRED) | |
2325 | || (f->sym->ts.type == BT_CLASS | |
2326 | && CLASS_DATA (f->sym)->as->type != AS_DEFERRED)) | |
7dce33fe | 2327 | { |
2328 | gcc_assert (GFC_DECL_CAF_OFFSET (f->sym->backend_decl) | |
2329 | == NULL_TREE); | |
2330 | GFC_DECL_CAF_OFFSET (f->sym->backend_decl) = offset; | |
2331 | } | |
2332 | else | |
2333 | { | |
2334 | gcc_assert (GFC_TYPE_ARRAY_CAF_OFFSET (caf_type) == NULL_TREE); | |
2335 | GFC_TYPE_ARRAY_CAF_OFFSET (caf_type) = offset; | |
2336 | } | |
85c94a64 | 2337 | DECL_CONTEXT (offset) = fndecl; |
2338 | DECL_ARTIFICIAL (offset) = 1; | |
2339 | DECL_ARG_TYPE (offset) = TREE_VALUE (typelist); | |
2340 | TREE_READONLY (offset) = 1; | |
2341 | hidden_arglist = chainon (hidden_arglist, offset); | |
2342 | gfc_finish_decl (offset); | |
2343 | } | |
2344 | ||
d4163395 | 2345 | arglist = chainon (arglist, parm); |
e4b2c26c | 2346 | typelist = TREE_CHAIN (typelist); |
4ee9c684 | 2347 | } |
e4b2c26c | 2348 | |
465e4a95 | 2349 | /* Add the hidden string length parameters, unless the procedure |
2350 | is bind(C). */ | |
2351 | if (!sym->attr.is_bind_c) | |
2352 | arglist = chainon (arglist, hidden_arglist); | |
d4163395 | 2353 | |
ebe27ea2 | 2354 | gcc_assert (hidden_typelist == NULL_TREE |
2355 | || TREE_VALUE (hidden_typelist) == void_type_node); | |
e4b2c26c | 2356 | DECL_ARGUMENTS (fndecl) = arglist; |
1b716045 | 2357 | } |
e4b2c26c | 2358 | |
1b716045 | 2359 | /* Do the setup necessary before generating the body of a function. */ |
2360 | ||
2361 | static void | |
2362 | trans_function_start (gfc_symbol * sym) | |
2363 | { | |
2364 | tree fndecl; | |
2365 | ||
2366 | fndecl = sym->backend_decl; | |
2367 | ||
f888a3fb | 2368 | /* Let GCC know the current scope is this function. */ |
1b716045 | 2369 | current_function_decl = fndecl; |
2370 | ||
f888a3fb | 2371 | /* Let the world know what we're about to do. */ |
1b716045 | 2372 | announce_function (fndecl); |
2373 | ||
16a40513 | 2374 | if (DECL_FILE_SCOPE_P (fndecl)) |
1b716045 | 2375 | { |
f888a3fb | 2376 | /* Create RTL for function declaration. */ |
1b716045 | 2377 | rest_of_decl_compilation (fndecl, 1, 0); |
2378 | } | |
2379 | ||
f888a3fb | 2380 | /* Create RTL for function definition. */ |
1b716045 | 2381 | make_decl_rtl (fndecl); |
2382 | ||
00cf115c | 2383 | allocate_struct_function (fndecl, false); |
1b716045 | 2384 | |
f888a3fb | 2385 | /* function.c requires a push at the start of the function. */ |
cde2be84 | 2386 | pushlevel (); |
1b716045 | 2387 | } |
2388 | ||
2389 | /* Create thunks for alternate entry points. */ | |
2390 | ||
2391 | static void | |
d896f9b3 | 2392 | build_entry_thunks (gfc_namespace * ns, bool global) |
1b716045 | 2393 | { |
2394 | gfc_formal_arglist *formal; | |
2395 | gfc_formal_arglist *thunk_formal; | |
2396 | gfc_entry_list *el; | |
2397 | gfc_symbol *thunk_sym; | |
2398 | stmtblock_t body; | |
2399 | tree thunk_fndecl; | |
1b716045 | 2400 | tree tmp; |
b31f705b | 2401 | locus old_loc; |
1b716045 | 2402 | |
2403 | /* This should always be a toplevel function. */ | |
22d678e8 | 2404 | gcc_assert (current_function_decl == NULL_TREE); |
1b716045 | 2405 | |
4671339c | 2406 | gfc_save_backend_locus (&old_loc); |
1b716045 | 2407 | for (el = ns->entries; el; el = el->next) |
2408 | { | |
f1f41a6c | 2409 | vec<tree, va_gc> *args = NULL; |
2410 | vec<tree, va_gc> *string_args = NULL; | |
414c3a2c | 2411 | |
1b716045 | 2412 | thunk_sym = el->sym; |
a90fe829 | 2413 | |
d896f9b3 | 2414 | build_function_decl (thunk_sym, global); |
1b716045 | 2415 | create_function_arglist (thunk_sym); |
2416 | ||
2417 | trans_function_start (thunk_sym); | |
2418 | ||
2419 | thunk_fndecl = thunk_sym->backend_decl; | |
2420 | ||
e5004242 | 2421 | gfc_init_block (&body); |
1b716045 | 2422 | |
f888a3fb | 2423 | /* Pass extra parameter identifying this entry point. */ |
7016c612 | 2424 | tmp = build_int_cst (gfc_array_index_type, el->id); |
f1f41a6c | 2425 | vec_safe_push (args, tmp); |
1b716045 | 2426 | |
c6871095 | 2427 | if (thunk_sym->attr.function) |
2428 | { | |
2429 | if (gfc_return_by_reference (ns->proc_name)) | |
2430 | { | |
2431 | tree ref = DECL_ARGUMENTS (current_function_decl); | |
f1f41a6c | 2432 | vec_safe_push (args, ref); |
c6871095 | 2433 | if (ns->proc_name->ts.type == BT_CHARACTER) |
f1f41a6c | 2434 | vec_safe_push (args, DECL_CHAIN (ref)); |
c6871095 | 2435 | } |
2436 | } | |
2437 | ||
6777213b | 2438 | for (formal = gfc_sym_get_dummy_args (ns->proc_name); formal; |
2439 | formal = formal->next) | |
1b716045 | 2440 | { |
c6871095 | 2441 | /* Ignore alternate returns. */ |
2442 | if (formal->sym == NULL) | |
2443 | continue; | |
2444 | ||
1b716045 | 2445 | /* We don't have a clever way of identifying arguments, so resort to |
2446 | a brute-force search. */ | |
6777213b | 2447 | for (thunk_formal = gfc_sym_get_dummy_args (thunk_sym); |
1b716045 | 2448 | thunk_formal; |
2449 | thunk_formal = thunk_formal->next) | |
2450 | { | |
2451 | if (thunk_formal->sym == formal->sym) | |
2452 | break; | |
2453 | } | |
2454 | ||
2455 | if (thunk_formal) | |
2456 | { | |
2457 | /* Pass the argument. */ | |
d95efb59 | 2458 | DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1; |
f1f41a6c | 2459 | vec_safe_push (args, thunk_formal->sym->backend_decl); |
1b716045 | 2460 | if (formal->sym->ts.type == BT_CHARACTER) |
2461 | { | |
eeebe20b | 2462 | tmp = thunk_formal->sym->ts.u.cl->backend_decl; |
f1f41a6c | 2463 | vec_safe_push (string_args, tmp); |
1b716045 | 2464 | } |
2465 | } | |
2466 | else | |
2467 | { | |
2468 | /* Pass NULL for a missing argument. */ | |
f1f41a6c | 2469 | vec_safe_push (args, null_pointer_node); |
1b716045 | 2470 | if (formal->sym->ts.type == BT_CHARACTER) |
2471 | { | |
7d3075f6 | 2472 | tmp = build_int_cst (gfc_charlen_type_node, 0); |
f1f41a6c | 2473 | vec_safe_push (string_args, tmp); |
1b716045 | 2474 | } |
2475 | } | |
2476 | } | |
2477 | ||
2478 | /* Call the master function. */ | |
f1f41a6c | 2479 | vec_safe_splice (args, string_args); |
1b716045 | 2480 | tmp = ns->proc_name->backend_decl; |
414c3a2c | 2481 | tmp = build_call_expr_loc_vec (input_location, tmp, args); |
c6871095 | 2482 | if (ns->proc_name->attr.mixed_entry_master) |
2483 | { | |
2484 | tree union_decl, field; | |
2485 | tree master_type = TREE_TYPE (ns->proc_name->backend_decl); | |
2486 | ||
e60a6f7b | 2487 | union_decl = build_decl (input_location, |
2488 | VAR_DECL, get_identifier ("__result"), | |
c6871095 | 2489 | TREE_TYPE (master_type)); |
2490 | DECL_ARTIFICIAL (union_decl) = 1; | |
2491 | DECL_EXTERNAL (union_decl) = 0; | |
2492 | TREE_PUBLIC (union_decl) = 0; | |
2493 | TREE_USED (union_decl) = 1; | |
2494 | layout_decl (union_decl, 0); | |
2495 | pushdecl (union_decl); | |
2496 | ||
2497 | DECL_CONTEXT (union_decl) = current_function_decl; | |
fd779e1d | 2498 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
2499 | TREE_TYPE (union_decl), union_decl, tmp); | |
c6871095 | 2500 | gfc_add_expr_to_block (&body, tmp); |
2501 | ||
2502 | for (field = TYPE_FIELDS (TREE_TYPE (union_decl)); | |
1767a056 | 2503 | field; field = DECL_CHAIN (field)) |
c6871095 | 2504 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2505 | thunk_sym->result->name) == 0) | |
2506 | break; | |
2507 | gcc_assert (field != NULL_TREE); | |
fd779e1d | 2508 | tmp = fold_build3_loc (input_location, COMPONENT_REF, |
2509 | TREE_TYPE (field), union_decl, field, | |
2510 | NULL_TREE); | |
a90fe829 | 2511 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
f75d6b8a | 2512 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2513 | DECL_RESULT (current_function_decl), tmp); | |
c6871095 | 2514 | tmp = build1_v (RETURN_EXPR, tmp); |
2515 | } | |
2516 | else if (TREE_TYPE (DECL_RESULT (current_function_decl)) | |
2517 | != void_type_node) | |
2518 | { | |
fd779e1d | 2519 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
f75d6b8a | 2520 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2521 | DECL_RESULT (current_function_decl), tmp); | |
c6871095 | 2522 | tmp = build1_v (RETURN_EXPR, tmp); |
2523 | } | |
1b716045 | 2524 | gfc_add_expr_to_block (&body, tmp); |
2525 | ||
2526 | /* Finish off this function and send it for code generation. */ | |
2527 | DECL_SAVED_TREE (thunk_fndecl) = gfc_finish_block (&body); | |
e5004242 | 2528 | tmp = getdecls (); |
cde2be84 | 2529 | poplevel (1, 1); |
1b716045 | 2530 | BLOCK_SUPERCONTEXT (DECL_INITIAL (thunk_fndecl)) = thunk_fndecl; |
e5004242 | 2531 | DECL_SAVED_TREE (thunk_fndecl) |
2532 | = build3_v (BIND_EXPR, tmp, DECL_SAVED_TREE (thunk_fndecl), | |
2533 | DECL_INITIAL (thunk_fndecl)); | |
1b716045 | 2534 | |
2535 | /* Output the GENERIC tree. */ | |
2536 | dump_function (TDI_original, thunk_fndecl); | |
2537 | ||
2538 | /* Store the end of the function, so that we get good line number | |
2539 | info for the epilogue. */ | |
2540 | cfun->function_end_locus = input_location; | |
2541 | ||
2542 | /* We're leaving the context of this function, so zap cfun. | |
2543 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
2544 | tree_rest_of_compilation. */ | |
87d4aa85 | 2545 | set_cfun (NULL); |
1b716045 | 2546 | |
2547 | current_function_decl = NULL_TREE; | |
2548 | ||
bb982f66 | 2549 | cgraph_finalize_function (thunk_fndecl, true); |
1b716045 | 2550 | |
2551 | /* We share the symbols in the formal argument list with other entry | |
2552 | points and the master function. Clear them so that they are | |
2553 | recreated for each function. */ | |
6777213b | 2554 | for (formal = gfc_sym_get_dummy_args (thunk_sym); formal; |
2555 | formal = formal->next) | |
c6871095 | 2556 | if (formal->sym != NULL) /* Ignore alternate returns. */ |
2557 | { | |
2558 | formal->sym->backend_decl = NULL_TREE; | |
2559 | if (formal->sym->ts.type == BT_CHARACTER) | |
eeebe20b | 2560 | formal->sym->ts.u.cl->backend_decl = NULL_TREE; |
c6871095 | 2561 | } |
2562 | ||
2563 | if (thunk_sym->attr.function) | |
1b716045 | 2564 | { |
c6871095 | 2565 | if (thunk_sym->ts.type == BT_CHARACTER) |
eeebe20b | 2566 | thunk_sym->ts.u.cl->backend_decl = NULL_TREE; |
c6871095 | 2567 | if (thunk_sym->result->ts.type == BT_CHARACTER) |
eeebe20b | 2568 | thunk_sym->result->ts.u.cl->backend_decl = NULL_TREE; |
1b716045 | 2569 | } |
2570 | } | |
b31f705b | 2571 | |
4671339c | 2572 | gfc_restore_backend_locus (&old_loc); |
1b716045 | 2573 | } |
2574 | ||
2575 | ||
2576 | /* Create a decl for a function, and create any thunks for alternate entry | |
d896f9b3 | 2577 | points. If global is true, generate the function in the global binding |
2578 | level, otherwise in the current binding level (which can be global). */ | |
1b716045 | 2579 | |
2580 | void | |
d896f9b3 | 2581 | gfc_create_function_decl (gfc_namespace * ns, bool global) |
1b716045 | 2582 | { |
2583 | /* Create a declaration for the master function. */ | |
d896f9b3 | 2584 | build_function_decl (ns->proc_name, global); |
1b716045 | 2585 | |
f888a3fb | 2586 | /* Compile the entry thunks. */ |
1b716045 | 2587 | if (ns->entries) |
d896f9b3 | 2588 | build_entry_thunks (ns, global); |
1b716045 | 2589 | |
2590 | /* Now create the read argument list. */ | |
2591 | create_function_arglist (ns->proc_name); | |
15b28553 | 2592 | |
2593 | if (ns->omp_declare_simd) | |
2594 | gfc_trans_omp_declare_simd (ns); | |
1b716045 | 2595 | } |
2596 | ||
c750cc52 | 2597 | /* Return the decl used to hold the function return value. If |
3350e716 | 2598 | parent_flag is set, the context is the parent_scope. */ |
4ee9c684 | 2599 | |
2600 | tree | |
c750cc52 | 2601 | gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag) |
4ee9c684 | 2602 | { |
c750cc52 | 2603 | tree decl; |
2604 | tree length; | |
2605 | tree this_fake_result_decl; | |
2606 | tree this_function_decl; | |
4ee9c684 | 2607 | |
2608 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
2609 | ||
c750cc52 | 2610 | if (parent_flag) |
2611 | { | |
2612 | this_fake_result_decl = parent_fake_result_decl; | |
2613 | this_function_decl = DECL_CONTEXT (current_function_decl); | |
2614 | } | |
2615 | else | |
2616 | { | |
2617 | this_fake_result_decl = current_fake_result_decl; | |
2618 | this_function_decl = current_function_decl; | |
2619 | } | |
2620 | ||
c6871095 | 2621 | if (sym |
c750cc52 | 2622 | && sym->ns->proc_name->backend_decl == this_function_decl |
d4163395 | 2623 | && sym->ns->proc_name->attr.entry_master |
c6871095 | 2624 | && sym != sym->ns->proc_name) |
2625 | { | |
d4163395 | 2626 | tree t = NULL, var; |
c750cc52 | 2627 | if (this_fake_result_decl != NULL) |
2628 | for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t)) | |
d4163395 | 2629 | if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0) |
2630 | break; | |
2631 | if (t) | |
2632 | return TREE_VALUE (t); | |
c750cc52 | 2633 | decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag); |
2634 | ||
2635 | if (parent_flag) | |
2636 | this_fake_result_decl = parent_fake_result_decl; | |
2637 | else | |
2638 | this_fake_result_decl = current_fake_result_decl; | |
2639 | ||
d4163395 | 2640 | if (decl && sym->ns->proc_name->attr.mixed_entry_master) |
c6871095 | 2641 | { |
2642 | tree field; | |
2643 | ||
2644 | for (field = TYPE_FIELDS (TREE_TYPE (decl)); | |
1767a056 | 2645 | field; field = DECL_CHAIN (field)) |
c6871095 | 2646 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2647 | sym->name) == 0) | |
2648 | break; | |
2649 | ||
2650 | gcc_assert (field != NULL_TREE); | |
fd779e1d | 2651 | decl = fold_build3_loc (input_location, COMPONENT_REF, |
2652 | TREE_TYPE (field), decl, field, NULL_TREE); | |
c6871095 | 2653 | } |
c750cc52 | 2654 | |
2655 | var = create_tmp_var_raw (TREE_TYPE (decl), sym->name); | |
2656 | if (parent_flag) | |
2657 | gfc_add_decl_to_parent_function (var); | |
2658 | else | |
2659 | gfc_add_decl_to_function (var); | |
2660 | ||
d4163395 | 2661 | SET_DECL_VALUE_EXPR (var, decl); |
2662 | DECL_HAS_VALUE_EXPR_P (var) = 1; | |
2cf330c4 | 2663 | GFC_DECL_RESULT (var) = 1; |
c750cc52 | 2664 | |
2665 | TREE_CHAIN (this_fake_result_decl) | |
2666 | = tree_cons (get_identifier (sym->name), var, | |
2667 | TREE_CHAIN (this_fake_result_decl)); | |
d4163395 | 2668 | return var; |
c6871095 | 2669 | } |
2670 | ||
c750cc52 | 2671 | if (this_fake_result_decl != NULL_TREE) |
2672 | return TREE_VALUE (this_fake_result_decl); | |
4ee9c684 | 2673 | |
2674 | /* Only when gfc_get_fake_result_decl is called by gfc_trans_return, | |
2675 | sym is NULL. */ | |
2676 | if (!sym) | |
2677 | return NULL_TREE; | |
2678 | ||
d4163395 | 2679 | if (sym->ts.type == BT_CHARACTER) |
4ee9c684 | 2680 | { |
eeebe20b | 2681 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
d4163395 | 2682 | length = gfc_create_string_length (sym); |
2683 | else | |
eeebe20b | 2684 | length = sym->ts.u.cl->backend_decl; |
d4163395 | 2685 | if (TREE_CODE (length) == VAR_DECL |
2686 | && DECL_CONTEXT (length) == NULL_TREE) | |
99042714 | 2687 | gfc_add_decl_to_function (length); |
4ee9c684 | 2688 | } |
2689 | ||
2690 | if (gfc_return_by_reference (sym)) | |
2691 | { | |
c750cc52 | 2692 | decl = DECL_ARGUMENTS (this_function_decl); |
c6871095 | 2693 | |
c750cc52 | 2694 | if (sym->ns->proc_name->backend_decl == this_function_decl |
c6871095 | 2695 | && sym->ns->proc_name->attr.entry_master) |
1767a056 | 2696 | decl = DECL_CHAIN (decl); |
4ee9c684 | 2697 | |
2698 | TREE_USED (decl) = 1; | |
2699 | if (sym->as) | |
2700 | decl = gfc_build_dummy_array_decl (sym, decl); | |
2701 | } | |
2702 | else | |
2703 | { | |
2704 | sprintf (name, "__result_%.20s", | |
c750cc52 | 2705 | IDENTIFIER_POINTER (DECL_NAME (this_function_decl))); |
4ee9c684 | 2706 | |
3350e716 | 2707 | if (!sym->attr.mixed_entry_master && sym->attr.function) |
1e71b314 | 2708 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
e60a6f7b | 2709 | VAR_DECL, get_identifier (name), |
3350e716 | 2710 | gfc_sym_type (sym)); |
2711 | else | |
1e71b314 | 2712 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
e60a6f7b | 2713 | VAR_DECL, get_identifier (name), |
3350e716 | 2714 | TREE_TYPE (TREE_TYPE (this_function_decl))); |
4ee9c684 | 2715 | DECL_ARTIFICIAL (decl) = 1; |
2716 | DECL_EXTERNAL (decl) = 0; | |
2717 | TREE_PUBLIC (decl) = 0; | |
2718 | TREE_USED (decl) = 1; | |
764f1175 | 2719 | GFC_DECL_RESULT (decl) = 1; |
a379e3a9 | 2720 | TREE_ADDRESSABLE (decl) = 1; |
4ee9c684 | 2721 | |
2722 | layout_decl (decl, 0); | |
cf5f881f | 2723 | gfc_finish_decl_attrs (decl, &sym->attr); |
4ee9c684 | 2724 | |
c750cc52 | 2725 | if (parent_flag) |
2726 | gfc_add_decl_to_parent_function (decl); | |
2727 | else | |
2728 | gfc_add_decl_to_function (decl); | |
4ee9c684 | 2729 | } |
2730 | ||
c750cc52 | 2731 | if (parent_flag) |
2732 | parent_fake_result_decl = build_tree_list (NULL, decl); | |
2733 | else | |
2734 | current_fake_result_decl = build_tree_list (NULL, decl); | |
4ee9c684 | 2735 | |
2736 | return decl; | |
2737 | } | |
2738 | ||
2739 | ||
2740 | /* Builds a function decl. The remaining parameters are the types of the | |
2741 | function arguments. Negative nargs indicates a varargs function. */ | |
2742 | ||
8ce86007 | 2743 | static tree |
2744 | build_library_function_decl_1 (tree name, const char *spec, | |
2745 | tree rettype, int nargs, va_list p) | |
4ee9c684 | 2746 | { |
f1f41a6c | 2747 | vec<tree, va_gc> *arglist; |
4ee9c684 | 2748 | tree fntype; |
2749 | tree fndecl; | |
4ee9c684 | 2750 | int n; |
2751 | ||
2752 | /* Library functions must be declared with global scope. */ | |
22d678e8 | 2753 | gcc_assert (current_function_decl == NULL_TREE); |
4ee9c684 | 2754 | |
4ee9c684 | 2755 | /* Create a list of the argument types. */ |
f1f41a6c | 2756 | vec_alloc (arglist, abs (nargs)); |
5edc3af9 | 2757 | for (n = abs (nargs); n > 0; n--) |
4ee9c684 | 2758 | { |
5edc3af9 | 2759 | tree argtype = va_arg (p, tree); |
f1f41a6c | 2760 | arglist->quick_push (argtype); |
4ee9c684 | 2761 | } |
2762 | ||
2763 | /* Build the function type and decl. */ | |
5edc3af9 | 2764 | if (nargs >= 0) |
2765 | fntype = build_function_type_vec (rettype, arglist); | |
2766 | else | |
2767 | fntype = build_varargs_function_type_vec (rettype, arglist); | |
8ce86007 | 2768 | if (spec) |
2769 | { | |
2770 | tree attr_args = build_tree_list (NULL_TREE, | |
2771 | build_string (strlen (spec), spec)); | |
2772 | tree attrs = tree_cons (get_identifier ("fn spec"), | |
2773 | attr_args, TYPE_ATTRIBUTES (fntype)); | |
2774 | fntype = build_type_attribute_variant (fntype, attrs); | |
2775 | } | |
e60a6f7b | 2776 | fndecl = build_decl (input_location, |
2777 | FUNCTION_DECL, name, fntype); | |
4ee9c684 | 2778 | |
2779 | /* Mark this decl as external. */ | |
2780 | DECL_EXTERNAL (fndecl) = 1; | |
2781 | TREE_PUBLIC (fndecl) = 1; | |
2782 | ||
4ee9c684 | 2783 | pushdecl (fndecl); |
2784 | ||
b2c4af5e | 2785 | rest_of_decl_compilation (fndecl, 1, 0); |
4ee9c684 | 2786 | |
2787 | return fndecl; | |
2788 | } | |
2789 | ||
8ce86007 | 2790 | /* Builds a function decl. The remaining parameters are the types of the |
2791 | function arguments. Negative nargs indicates a varargs function. */ | |
2792 | ||
2793 | tree | |
2794 | gfc_build_library_function_decl (tree name, tree rettype, int nargs, ...) | |
2795 | { | |
2796 | tree ret; | |
2797 | va_list args; | |
2798 | va_start (args, nargs); | |
2799 | ret = build_library_function_decl_1 (name, NULL, rettype, nargs, args); | |
2800 | va_end (args); | |
2801 | return ret; | |
2802 | } | |
2803 | ||
2804 | /* Builds a function decl. The remaining parameters are the types of the | |
2805 | function arguments. Negative nargs indicates a varargs function. | |
2806 | The SPEC parameter specifies the function argument and return type | |
2807 | specification according to the fnspec function type attribute. */ | |
2808 | ||
4bf69bc3 | 2809 | tree |
8ce86007 | 2810 | gfc_build_library_function_decl_with_spec (tree name, const char *spec, |
2811 | tree rettype, int nargs, ...) | |
2812 | { | |
2813 | tree ret; | |
2814 | va_list args; | |
2815 | va_start (args, nargs); | |
2816 | ret = build_library_function_decl_1 (name, spec, rettype, nargs, args); | |
2817 | va_end (args); | |
2818 | return ret; | |
2819 | } | |
2820 | ||
4ee9c684 | 2821 | static void |
2822 | gfc_build_intrinsic_function_decls (void) | |
2823 | { | |
90ba9145 | 2824 | tree gfc_int4_type_node = gfc_get_int_type (4); |
2825 | tree gfc_int8_type_node = gfc_get_int_type (8); | |
920e54ef | 2826 | tree gfc_int16_type_node = gfc_get_int_type (16); |
90ba9145 | 2827 | tree gfc_logical4_type_node = gfc_get_logical_type (4); |
40b806de | 2828 | tree pchar1_type_node = gfc_get_pchar_type (1); |
2829 | tree pchar4_type_node = gfc_get_pchar_type (4); | |
90ba9145 | 2830 | |
4ee9c684 | 2831 | /* String functions. */ |
241ecdc7 | 2832 | gfor_fndecl_compare_string = gfc_build_library_function_decl_with_spec ( |
2833 | get_identifier (PREFIX("compare_string")), "..R.R", | |
2834 | integer_type_node, 4, gfc_charlen_type_node, pchar1_type_node, | |
2835 | gfc_charlen_type_node, pchar1_type_node); | |
537824d1 | 2836 | DECL_PURE_P (gfor_fndecl_compare_string) = 1; |
bc351485 | 2837 | TREE_NOTHROW (gfor_fndecl_compare_string) = 1; |
241ecdc7 | 2838 | |
2839 | gfor_fndecl_concat_string = gfc_build_library_function_decl_with_spec ( | |
2840 | get_identifier (PREFIX("concat_string")), "..W.R.R", | |
2841 | void_type_node, 6, gfc_charlen_type_node, pchar1_type_node, | |
2842 | gfc_charlen_type_node, pchar1_type_node, | |
2843 | gfc_charlen_type_node, pchar1_type_node); | |
bc351485 | 2844 | TREE_NOTHROW (gfor_fndecl_concat_string) = 1; |
241ecdc7 | 2845 | |
2846 | gfor_fndecl_string_len_trim = gfc_build_library_function_decl_with_spec ( | |
2847 | get_identifier (PREFIX("string_len_trim")), "..R", | |
2848 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar1_type_node); | |
537824d1 | 2849 | DECL_PURE_P (gfor_fndecl_string_len_trim) = 1; |
bc351485 | 2850 | TREE_NOTHROW (gfor_fndecl_string_len_trim) = 1; |
241ecdc7 | 2851 | |
2852 | gfor_fndecl_string_index = gfc_build_library_function_decl_with_spec ( | |
2853 | get_identifier (PREFIX("string_index")), "..R.R.", | |
2854 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2855 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2856 | DECL_PURE_P (gfor_fndecl_string_index) = 1; |
bc351485 | 2857 | TREE_NOTHROW (gfor_fndecl_string_index) = 1; |
241ecdc7 | 2858 | |
2859 | gfor_fndecl_string_scan = gfc_build_library_function_decl_with_spec ( | |
2860 | get_identifier (PREFIX("string_scan")), "..R.R.", | |
2861 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2862 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2863 | DECL_PURE_P (gfor_fndecl_string_scan) = 1; |
bc351485 | 2864 | TREE_NOTHROW (gfor_fndecl_string_scan) = 1; |
241ecdc7 | 2865 | |
2866 | gfor_fndecl_string_verify = gfc_build_library_function_decl_with_spec ( | |
2867 | get_identifier (PREFIX("string_verify")), "..R.R.", | |
2868 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2869 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2870 | DECL_PURE_P (gfor_fndecl_string_verify) = 1; |
bc351485 | 2871 | TREE_NOTHROW (gfor_fndecl_string_verify) = 1; |
241ecdc7 | 2872 | |
2873 | gfor_fndecl_string_trim = gfc_build_library_function_decl_with_spec ( | |
2874 | get_identifier (PREFIX("string_trim")), ".Ww.R", | |
2875 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2876 | build_pointer_type (pchar1_type_node), gfc_charlen_type_node, | |
2877 | pchar1_type_node); | |
2878 | ||
2879 | gfor_fndecl_string_minmax = gfc_build_library_function_decl_with_spec ( | |
2880 | get_identifier (PREFIX("string_minmax")), ".Ww.R", | |
2881 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2882 | build_pointer_type (pchar1_type_node), integer_type_node, | |
2883 | integer_type_node); | |
2884 | ||
2885 | gfor_fndecl_adjustl = gfc_build_library_function_decl_with_spec ( | |
2886 | get_identifier (PREFIX("adjustl")), ".W.R", | |
2887 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2888 | pchar1_type_node); | |
bc351485 | 2889 | TREE_NOTHROW (gfor_fndecl_adjustl) = 1; |
241ecdc7 | 2890 | |
2891 | gfor_fndecl_adjustr = gfc_build_library_function_decl_with_spec ( | |
2892 | get_identifier (PREFIX("adjustr")), ".W.R", | |
2893 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2894 | pchar1_type_node); | |
bc351485 | 2895 | TREE_NOTHROW (gfor_fndecl_adjustr) = 1; |
241ecdc7 | 2896 | |
2897 | gfor_fndecl_select_string = gfc_build_library_function_decl_with_spec ( | |
2898 | get_identifier (PREFIX("select_string")), ".R.R.", | |
2899 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2900 | pchar1_type_node, gfc_charlen_type_node); | |
537824d1 | 2901 | DECL_PURE_P (gfor_fndecl_select_string) = 1; |
bc351485 | 2902 | TREE_NOTHROW (gfor_fndecl_select_string) = 1; |
241ecdc7 | 2903 | |
2904 | gfor_fndecl_compare_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2905 | get_identifier (PREFIX("compare_string_char4")), "..R.R", | |
2906 | integer_type_node, 4, gfc_charlen_type_node, pchar4_type_node, | |
2907 | gfc_charlen_type_node, pchar4_type_node); | |
537824d1 | 2908 | DECL_PURE_P (gfor_fndecl_compare_string_char4) = 1; |
bc351485 | 2909 | TREE_NOTHROW (gfor_fndecl_compare_string_char4) = 1; |
241ecdc7 | 2910 | |
2911 | gfor_fndecl_concat_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2912 | get_identifier (PREFIX("concat_string_char4")), "..W.R.R", | |
2913 | void_type_node, 6, gfc_charlen_type_node, pchar4_type_node, | |
2914 | gfc_charlen_type_node, pchar4_type_node, gfc_charlen_type_node, | |
2915 | pchar4_type_node); | |
bc351485 | 2916 | TREE_NOTHROW (gfor_fndecl_concat_string_char4) = 1; |
241ecdc7 | 2917 | |
2918 | gfor_fndecl_string_len_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2919 | get_identifier (PREFIX("string_len_trim_char4")), "..R", | |
2920 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar4_type_node); | |
537824d1 | 2921 | DECL_PURE_P (gfor_fndecl_string_len_trim_char4) = 1; |
bc351485 | 2922 | TREE_NOTHROW (gfor_fndecl_string_len_trim_char4) = 1; |
241ecdc7 | 2923 | |
2924 | gfor_fndecl_string_index_char4 = gfc_build_library_function_decl_with_spec ( | |
2925 | get_identifier (PREFIX("string_index_char4")), "..R.R.", | |
2926 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2927 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2928 | DECL_PURE_P (gfor_fndecl_string_index_char4) = 1; |
bc351485 | 2929 | TREE_NOTHROW (gfor_fndecl_string_index_char4) = 1; |
241ecdc7 | 2930 | |
2931 | gfor_fndecl_string_scan_char4 = gfc_build_library_function_decl_with_spec ( | |
2932 | get_identifier (PREFIX("string_scan_char4")), "..R.R.", | |
2933 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2934 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2935 | DECL_PURE_P (gfor_fndecl_string_scan_char4) = 1; |
bc351485 | 2936 | TREE_NOTHROW (gfor_fndecl_string_scan_char4) = 1; |
241ecdc7 | 2937 | |
2938 | gfor_fndecl_string_verify_char4 = gfc_build_library_function_decl_with_spec ( | |
2939 | get_identifier (PREFIX("string_verify_char4")), "..R.R.", | |
2940 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2941 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2942 | DECL_PURE_P (gfor_fndecl_string_verify_char4) = 1; |
bc351485 | 2943 | TREE_NOTHROW (gfor_fndecl_string_verify_char4) = 1; |
241ecdc7 | 2944 | |
2945 | gfor_fndecl_string_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2946 | get_identifier (PREFIX("string_trim_char4")), ".Ww.R", | |
2947 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2948 | build_pointer_type (pchar4_type_node), gfc_charlen_type_node, | |
2949 | pchar4_type_node); | |
2950 | ||
2951 | gfor_fndecl_string_minmax_char4 = gfc_build_library_function_decl_with_spec ( | |
2952 | get_identifier (PREFIX("string_minmax_char4")), ".Ww.R", | |
2953 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2954 | build_pointer_type (pchar4_type_node), integer_type_node, | |
2955 | integer_type_node); | |
2956 | ||
2957 | gfor_fndecl_adjustl_char4 = gfc_build_library_function_decl_with_spec ( | |
2958 | get_identifier (PREFIX("adjustl_char4")), ".W.R", | |
2959 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2960 | pchar4_type_node); | |
bc351485 | 2961 | TREE_NOTHROW (gfor_fndecl_adjustl_char4) = 1; |
241ecdc7 | 2962 | |
2963 | gfor_fndecl_adjustr_char4 = gfc_build_library_function_decl_with_spec ( | |
2964 | get_identifier (PREFIX("adjustr_char4")), ".W.R", | |
2965 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2966 | pchar4_type_node); | |
bc351485 | 2967 | TREE_NOTHROW (gfor_fndecl_adjustr_char4) = 1; |
241ecdc7 | 2968 | |
2969 | gfor_fndecl_select_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2970 | get_identifier (PREFIX("select_string_char4")), ".R.R.", | |
2971 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2972 | pvoid_type_node, gfc_charlen_type_node); | |
537824d1 | 2973 | DECL_PURE_P (gfor_fndecl_select_string_char4) = 1; |
bc351485 | 2974 | TREE_NOTHROW (gfor_fndecl_select_string_char4) = 1; |
b44437b9 | 2975 | |
2976 | ||
2977 | /* Conversion between character kinds. */ | |
2978 | ||
241ecdc7 | 2979 | gfor_fndecl_convert_char1_to_char4 = gfc_build_library_function_decl_with_spec ( |
2980 | get_identifier (PREFIX("convert_char1_to_char4")), ".w.R", | |
2981 | void_type_node, 3, build_pointer_type (pchar4_type_node), | |
2982 | gfc_charlen_type_node, pchar1_type_node); | |
b44437b9 | 2983 | |
241ecdc7 | 2984 | gfor_fndecl_convert_char4_to_char1 = gfc_build_library_function_decl_with_spec ( |
2985 | get_identifier (PREFIX("convert_char4_to_char1")), ".w.R", | |
2986 | void_type_node, 3, build_pointer_type (pchar1_type_node), | |
2987 | gfc_charlen_type_node, pchar4_type_node); | |
b44437b9 | 2988 | |
40b806de | 2989 | /* Misc. functions. */ |
5fcc6ec2 | 2990 | |
241ecdc7 | 2991 | gfor_fndecl_ttynam = gfc_build_library_function_decl_with_spec ( |
2992 | get_identifier (PREFIX("ttynam")), ".W", | |
2993 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
2994 | integer_type_node); | |
2995 | ||
2996 | gfor_fndecl_fdate = gfc_build_library_function_decl_with_spec ( | |
2997 | get_identifier (PREFIX("fdate")), ".W", | |
2998 | void_type_node, 2, pchar_type_node, gfc_charlen_type_node); | |
2999 | ||
3000 | gfor_fndecl_ctime = gfc_build_library_function_decl_with_spec ( | |
3001 | get_identifier (PREFIX("ctime")), ".W", | |
3002 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
3003 | gfc_int8_type_node); | |
3004 | ||
3005 | gfor_fndecl_sc_kind = gfc_build_library_function_decl_with_spec ( | |
3006 | get_identifier (PREFIX("selected_char_kind")), "..R", | |
3007 | gfc_int4_type_node, 2, gfc_charlen_type_node, pchar_type_node); | |
537824d1 | 3008 | DECL_PURE_P (gfor_fndecl_sc_kind) = 1; |
bc351485 | 3009 | TREE_NOTHROW (gfor_fndecl_sc_kind) = 1; |
241ecdc7 | 3010 | |
3011 | gfor_fndecl_si_kind = gfc_build_library_function_decl_with_spec ( | |
3012 | get_identifier (PREFIX("selected_int_kind")), ".R", | |
3013 | gfc_int4_type_node, 1, pvoid_type_node); | |
537824d1 | 3014 | DECL_PURE_P (gfor_fndecl_si_kind) = 1; |
bc351485 | 3015 | TREE_NOTHROW (gfor_fndecl_si_kind) = 1; |
241ecdc7 | 3016 | |
3017 | gfor_fndecl_sr_kind = gfc_build_library_function_decl_with_spec ( | |
3018 | get_identifier (PREFIX("selected_real_kind2008")), ".RR", | |
3019 | gfc_int4_type_node, 3, pvoid_type_node, pvoid_type_node, | |
3020 | pvoid_type_node); | |
537824d1 | 3021 | DECL_PURE_P (gfor_fndecl_sr_kind) = 1; |
bc351485 | 3022 | TREE_NOTHROW (gfor_fndecl_sr_kind) = 1; |
4ee9c684 | 3023 | |
4ee9c684 | 3024 | /* Power functions. */ |
76834664 | 3025 | { |
920e54ef | 3026 | tree ctype, rtype, itype, jtype; |
3027 | int rkind, ikind, jkind; | |
3028 | #define NIKINDS 3 | |
3029 | #define NRKINDS 4 | |
3030 | static int ikinds[NIKINDS] = {4, 8, 16}; | |
3031 | static int rkinds[NRKINDS] = {4, 8, 10, 16}; | |
3032 | char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */ | |
3033 | ||
3034 | for (ikind=0; ikind < NIKINDS; ikind++) | |
76834664 | 3035 | { |
920e54ef | 3036 | itype = gfc_get_int_type (ikinds[ikind]); |
3037 | ||
3038 | for (jkind=0; jkind < NIKINDS; jkind++) | |
3039 | { | |
3040 | jtype = gfc_get_int_type (ikinds[jkind]); | |
3041 | if (itype && jtype) | |
3042 | { | |
3043 | sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind], | |
3044 | ikinds[jkind]); | |
3045 | gfor_fndecl_math_powi[jkind][ikind].integer = | |
3046 | gfc_build_library_function_decl (get_identifier (name), | |
3047 | jtype, 2, jtype, itype); | |
2177d98b | 3048 | TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
bc351485 | 3049 | TREE_NOTHROW (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
920e54ef | 3050 | } |
3051 | } | |
3052 | ||
3053 | for (rkind = 0; rkind < NRKINDS; rkind ++) | |
76834664 | 3054 | { |
920e54ef | 3055 | rtype = gfc_get_real_type (rkinds[rkind]); |
3056 | if (rtype && itype) | |
3057 | { | |
3058 | sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind], | |
3059 | ikinds[ikind]); | |
3060 | gfor_fndecl_math_powi[rkind][ikind].real = | |
3061 | gfc_build_library_function_decl (get_identifier (name), | |
3062 | rtype, 2, rtype, itype); | |
2177d98b | 3063 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
bc351485 | 3064 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
920e54ef | 3065 | } |
3066 | ||
3067 | ctype = gfc_get_complex_type (rkinds[rkind]); | |
3068 | if (ctype && itype) | |
3069 | { | |
3070 | sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind], | |
3071 | ikinds[ikind]); | |
3072 | gfor_fndecl_math_powi[rkind][ikind].cmplx = | |
3073 | gfc_build_library_function_decl (get_identifier (name), | |
3074 | ctype, 2,ctype, itype); | |
2177d98b | 3075 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
bc351485 | 3076 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
920e54ef | 3077 | } |
76834664 | 3078 | } |
3079 | } | |
920e54ef | 3080 | #undef NIKINDS |
3081 | #undef NRKINDS | |
76834664 | 3082 | } |
3083 | ||
241ecdc7 | 3084 | gfor_fndecl_math_ishftc4 = gfc_build_library_function_decl ( |
3085 | get_identifier (PREFIX("ishftc4")), | |
3086 | gfc_int4_type_node, 3, gfc_int4_type_node, gfc_int4_type_node, | |
3087 | gfc_int4_type_node); | |
bc351485 | 3088 | TREE_READONLY (gfor_fndecl_math_ishftc4) = 1; |
3089 | TREE_NOTHROW (gfor_fndecl_math_ishftc4) = 1; | |
a90fe829 | 3090 | |
241ecdc7 | 3091 | gfor_fndecl_math_ishftc8 = gfc_build_library_function_decl ( |
3092 | get_identifier (PREFIX("ishftc8")), | |
3093 | gfc_int8_type_node, 3, gfc_int8_type_node, gfc_int4_type_node, | |
3094 | gfc_int4_type_node); | |
bc351485 | 3095 | TREE_READONLY (gfor_fndecl_math_ishftc8) = 1; |
3096 | TREE_NOTHROW (gfor_fndecl_math_ishftc8) = 1; | |
241ecdc7 | 3097 | |
920e54ef | 3098 | if (gfc_int16_type_node) |
bc351485 | 3099 | { |
3100 | gfor_fndecl_math_ishftc16 = gfc_build_library_function_decl ( | |
241ecdc7 | 3101 | get_identifier (PREFIX("ishftc16")), |
3102 | gfc_int16_type_node, 3, gfc_int16_type_node, gfc_int4_type_node, | |
3103 | gfc_int4_type_node); | |
bc351485 | 3104 | TREE_READONLY (gfor_fndecl_math_ishftc16) = 1; |
3105 | TREE_NOTHROW (gfor_fndecl_math_ishftc16) = 1; | |
3106 | } | |
920e54ef | 3107 | |
4e8e57b0 | 3108 | /* BLAS functions. */ |
3109 | { | |
36c921b9 | 3110 | tree pint = build_pointer_type (integer_type_node); |
4e8e57b0 | 3111 | tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind)); |
3112 | tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind)); | |
3113 | tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind)); | |
3114 | tree pz = build_pointer_type | |
3115 | (gfc_get_complex_type (gfc_default_double_kind)); | |
3116 | ||
3117 | gfor_fndecl_sgemm = gfc_build_library_function_decl | |
3118 | (get_identifier | |
3119 | (gfc_option.flag_underscoring ? "sgemm_" | |
3120 | : "sgemm"), | |
3121 | void_type_node, 15, pchar_type_node, | |
3122 | pchar_type_node, pint, pint, pint, ps, ps, pint, | |
36c921b9 | 3123 | ps, pint, ps, ps, pint, integer_type_node, |
3124 | integer_type_node); | |
4e8e57b0 | 3125 | gfor_fndecl_dgemm = gfc_build_library_function_decl |
3126 | (get_identifier | |
3127 | (gfc_option.flag_underscoring ? "dgemm_" | |
3128 | : "dgemm"), | |
3129 | void_type_node, 15, pchar_type_node, | |
3130 | pchar_type_node, pint, pint, pint, pd, pd, pint, | |
36c921b9 | 3131 | pd, pint, pd, pd, pint, integer_type_node, |
3132 | integer_type_node); | |
4e8e57b0 | 3133 | gfor_fndecl_cgemm = gfc_build_library_function_decl |
3134 | (get_identifier | |
3135 | (gfc_option.flag_underscoring ? "cgemm_" | |
3136 | : "cgemm"), | |
3137 | void_type_node, 15, pchar_type_node, | |
3138 | pchar_type_node, pint, pint, pint, pc, pc, pint, | |
36c921b9 | 3139 | pc, pint, pc, pc, pint, integer_type_node, |
3140 | integer_type_node); | |
4e8e57b0 | 3141 | gfor_fndecl_zgemm = gfc_build_library_function_decl |
3142 | (get_identifier | |
3143 | (gfc_option.flag_underscoring ? "zgemm_" | |
3144 | : "zgemm"), | |
3145 | void_type_node, 15, pchar_type_node, | |
3146 | pchar_type_node, pint, pint, pint, pz, pz, pint, | |
36c921b9 | 3147 | pz, pint, pz, pz, pint, integer_type_node, |
3148 | integer_type_node); | |
4e8e57b0 | 3149 | } |
3150 | ||
4ee9c684 | 3151 | /* Other functions. */ |
241ecdc7 | 3152 | gfor_fndecl_size0 = gfc_build_library_function_decl_with_spec ( |
3153 | get_identifier (PREFIX("size0")), ".R", | |
3154 | gfc_array_index_type, 1, pvoid_type_node); | |
537824d1 | 3155 | DECL_PURE_P (gfor_fndecl_size0) = 1; |
bc351485 | 3156 | TREE_NOTHROW (gfor_fndecl_size0) = 1; |
241ecdc7 | 3157 | |
3158 | gfor_fndecl_size1 = gfc_build_library_function_decl_with_spec ( | |
3159 | get_identifier (PREFIX("size1")), ".R", | |
3160 | gfc_array_index_type, 2, pvoid_type_node, gfc_array_index_type); | |
537824d1 | 3161 | DECL_PURE_P (gfor_fndecl_size1) = 1; |
bc351485 | 3162 | TREE_NOTHROW (gfor_fndecl_size1) = 1; |
241ecdc7 | 3163 | |
3164 | gfor_fndecl_iargc = gfc_build_library_function_decl ( | |
3165 | get_identifier (PREFIX ("iargc")), gfc_int4_type_node, 0); | |
bc351485 | 3166 | TREE_NOTHROW (gfor_fndecl_iargc) = 1; |
4ee9c684 | 3167 | } |
3168 | ||
3169 | ||
3170 | /* Make prototypes for runtime library functions. */ | |
3171 | ||
3172 | void | |
3173 | gfc_build_builtin_function_decls (void) | |
3174 | { | |
90ba9145 | 3175 | tree gfc_int4_type_node = gfc_get_int_type (4); |
4ee9c684 | 3176 | |
241ecdc7 | 3177 | gfor_fndecl_stop_numeric = gfc_build_library_function_decl ( |
3178 | get_identifier (PREFIX("stop_numeric")), | |
3179 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 3180 | /* STOP doesn't return. */ |
98ccec97 | 3181 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1; |
3182 | ||
dff2ea5f | 3183 | gfor_fndecl_stop_numeric_f08 = gfc_build_library_function_decl ( |
3184 | get_identifier (PREFIX("stop_numeric_f08")), | |
3185 | void_type_node, 1, gfc_int4_type_node); | |
3186 | /* STOP doesn't return. */ | |
3187 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric_f08) = 1; | |
3188 | ||
241ecdc7 | 3189 | gfor_fndecl_stop_string = gfc_build_library_function_decl_with_spec ( |
3190 | get_identifier (PREFIX("stop_string")), ".R.", | |
3191 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
070cc790 | 3192 | /* STOP doesn't return. */ |
241ecdc7 | 3193 | TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1; |
537824d1 | 3194 | |
241ecdc7 | 3195 | gfor_fndecl_error_stop_numeric = gfc_build_library_function_decl ( |
3196 | get_identifier (PREFIX("error_stop_numeric")), | |
3197 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 3198 | /* ERROR STOP doesn't return. */ |
3199 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_numeric) = 1; | |
3200 | ||
241ecdc7 | 3201 | gfor_fndecl_error_stop_string = gfc_build_library_function_decl_with_spec ( |
3202 | get_identifier (PREFIX("error_stop_string")), ".R.", | |
3203 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
c6cd3066 | 3204 | /* ERROR STOP doesn't return. */ |
3205 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_string) = 1; | |
3206 | ||
241ecdc7 | 3207 | gfor_fndecl_pause_numeric = gfc_build_library_function_decl ( |
3208 | get_identifier (PREFIX("pause_numeric")), | |
3209 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 3210 | |
241ecdc7 | 3211 | gfor_fndecl_pause_string = gfc_build_library_function_decl_with_spec ( |
3212 | get_identifier (PREFIX("pause_string")), ".R.", | |
3213 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
4ee9c684 | 3214 | |
241ecdc7 | 3215 | gfor_fndecl_runtime_error = gfc_build_library_function_decl_with_spec ( |
3216 | get_identifier (PREFIX("runtime_error")), ".R", | |
3217 | void_type_node, -1, pchar_type_node); | |
9c0f3811 | 3218 | /* The runtime_error function does not return. */ |
3219 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1; | |
4ee9c684 | 3220 | |
241ecdc7 | 3221 | gfor_fndecl_runtime_error_at = gfc_build_library_function_decl_with_spec ( |
3222 | get_identifier (PREFIX("runtime_error_at")), ".RR", | |
3223 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
50ad5fa2 | 3224 | /* The runtime_error_at function does not return. */ |
3225 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1; | |
a90fe829 | 3226 | |
241ecdc7 | 3227 | gfor_fndecl_runtime_warning_at = gfc_build_library_function_decl_with_spec ( |
3228 | get_identifier (PREFIX("runtime_warning_at")), ".RR", | |
3229 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
3230 | ||
3231 | gfor_fndecl_generate_error = gfc_build_library_function_decl_with_spec ( | |
3232 | get_identifier (PREFIX("generate_error")), ".R.R", | |
3233 | void_type_node, 3, pvoid_type_node, integer_type_node, | |
3234 | pchar_type_node); | |
3235 | ||
3236 | gfor_fndecl_os_error = gfc_build_library_function_decl_with_spec ( | |
3237 | get_identifier (PREFIX("os_error")), ".R", | |
3238 | void_type_node, 1, pchar_type_node); | |
9915365e | 3239 | /* The runtime_error function does not return. */ |
3240 | TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1; | |
3241 | ||
241ecdc7 | 3242 | gfor_fndecl_set_args = gfc_build_library_function_decl ( |
3243 | get_identifier (PREFIX("set_args")), | |
3244 | void_type_node, 2, integer_type_node, | |
3245 | build_pointer_type (pchar_type_node)); | |
7257a5d2 | 3246 | |
241ecdc7 | 3247 | gfor_fndecl_set_fpe = gfc_build_library_function_decl ( |
3248 | get_identifier (PREFIX("set_fpe")), | |
3249 | void_type_node, 1, integer_type_node); | |
8c84a5de | 3250 | |
56c7c2d7 | 3251 | /* Keep the array dimension in sync with the call, later in this file. */ |
241ecdc7 | 3252 | gfor_fndecl_set_options = gfc_build_library_function_decl_with_spec ( |
3253 | get_identifier (PREFIX("set_options")), "..R", | |
3254 | void_type_node, 2, integer_type_node, | |
3255 | build_pointer_type (integer_type_node)); | |
64fc3c4c | 3256 | |
241ecdc7 | 3257 | gfor_fndecl_set_convert = gfc_build_library_function_decl ( |
3258 | get_identifier (PREFIX("set_convert")), | |
3259 | void_type_node, 1, integer_type_node); | |
15774a8b | 3260 | |
241ecdc7 | 3261 | gfor_fndecl_set_record_marker = gfc_build_library_function_decl ( |
3262 | get_identifier (PREFIX("set_record_marker")), | |
3263 | void_type_node, 1, integer_type_node); | |
f23886ab | 3264 | |
241ecdc7 | 3265 | gfor_fndecl_set_max_subrecord_length = gfc_build_library_function_decl ( |
3266 | get_identifier (PREFIX("set_max_subrecord_length")), | |
3267 | void_type_node, 1, integer_type_node); | |
bbaaa7b1 | 3268 | |
8ce86007 | 3269 | gfor_fndecl_in_pack = gfc_build_library_function_decl_with_spec ( |
241ecdc7 | 3270 | get_identifier (PREFIX("internal_pack")), ".r", |
3271 | pvoid_type_node, 1, pvoid_type_node); | |
4ee9c684 | 3272 | |
8ce86007 | 3273 | gfor_fndecl_in_unpack = gfc_build_library_function_decl_with_spec ( |
241ecdc7 | 3274 | get_identifier (PREFIX("internal_unpack")), ".wR", |
3275 | void_type_node, 2, pvoid_type_node, pvoid_type_node); | |
3276 | ||
3277 | gfor_fndecl_associated = gfc_build_library_function_decl_with_spec ( | |
3278 | get_identifier (PREFIX("associated")), ".RR", | |
3279 | integer_type_node, 2, ppvoid_type_node, ppvoid_type_node); | |
537824d1 | 3280 | DECL_PURE_P (gfor_fndecl_associated) = 1; |
bc351485 | 3281 | TREE_NOTHROW (gfor_fndecl_associated) = 1; |
4ee9c684 | 3282 | |
70b5944a | 3283 | /* Coarray library calls. */ |
3284 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
3285 | { | |
3286 | tree pint_type, pppchar_type; | |
3287 | ||
3288 | pint_type = build_pointer_type (integer_type_node); | |
3289 | pppchar_type | |
3290 | = build_pointer_type (build_pointer_type (pchar_type_node)); | |
3291 | ||
3292 | gfor_fndecl_caf_init = gfc_build_library_function_decl ( | |
3293 | get_identifier (PREFIX("caf_init")), void_type_node, | |
53687b4e | 3294 | 2, pint_type, pppchar_type); |
70b5944a | 3295 | |
3296 | gfor_fndecl_caf_finalize = gfc_build_library_function_decl ( | |
3297 | get_identifier (PREFIX("caf_finalize")), void_type_node, 0); | |
3298 | ||
d44f2f7c | 3299 | gfor_fndecl_caf_this_image = gfc_build_library_function_decl ( |
3300 | get_identifier (PREFIX("caf_this_image")), integer_type_node, | |
3301 | 1, integer_type_node); | |
3302 | ||
3303 | gfor_fndecl_caf_num_images = gfc_build_library_function_decl ( | |
3304 | get_identifier (PREFIX("caf_num_images")), integer_type_node, | |
da82fa7c | 3305 | 2, integer_type_node, integer_type_node); |
d44f2f7c | 3306 | |
a961ca30 | 3307 | gfor_fndecl_caf_register = gfc_build_library_function_decl_with_spec ( |
3308 | get_identifier (PREFIX("caf_register")), "...WWW", pvoid_type_node, 6, | |
3309 | size_type_node, integer_type_node, ppvoid_type_node, pint_type, | |
d0d776fb | 3310 | pchar_type_node, integer_type_node); |
3311 | ||
3312 | gfor_fndecl_caf_deregister = gfc_build_library_function_decl_with_spec ( | |
3313 | get_identifier (PREFIX("caf_deregister")), ".WWW", void_type_node, 4, | |
3314 | ppvoid_type_node, pint_type, pchar_type_node, integer_type_node); | |
a961ca30 | 3315 | |
70b5944a | 3316 | gfor_fndecl_caf_critical = gfc_build_library_function_decl ( |
3317 | get_identifier (PREFIX("caf_critical")), void_type_node, 0); | |
3318 | ||
3319 | gfor_fndecl_caf_end_critical = gfc_build_library_function_decl ( | |
3320 | get_identifier (PREFIX("caf_end_critical")), void_type_node, 0); | |
3321 | ||
3322 | gfor_fndecl_caf_sync_all = gfc_build_library_function_decl_with_spec ( | |
96b417f0 | 3323 | get_identifier (PREFIX("caf_sync_all")), ".WW", void_type_node, |
79ed4a8e | 3324 | 3, pint_type, pchar_type_node, integer_type_node); |
70b5944a | 3325 | |
3326 | gfor_fndecl_caf_sync_images = gfc_build_library_function_decl_with_spec ( | |
96b417f0 | 3327 | get_identifier (PREFIX("caf_sync_images")), ".RRWW", void_type_node, |
3328 | 5, integer_type_node, pint_type, pint_type, | |
79ed4a8e | 3329 | pchar_type_node, integer_type_node); |
70b5944a | 3330 | |
3331 | gfor_fndecl_caf_error_stop = gfc_build_library_function_decl ( | |
3332 | get_identifier (PREFIX("caf_error_stop")), | |
3333 | void_type_node, 1, gfc_int4_type_node); | |
3334 | /* CAF's ERROR STOP doesn't return. */ | |
3335 | TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop) = 1; | |
3336 | ||
3337 | gfor_fndecl_caf_error_stop_str = gfc_build_library_function_decl_with_spec ( | |
3338 | get_identifier (PREFIX("caf_error_stop_str")), ".R.", | |
3339 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
3340 | /* CAF's ERROR STOP doesn't return. */ | |
3341 | TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop_str) = 1; | |
79ed4a8e | 3342 | |
3343 | gfor_fndecl_co_max = gfc_build_library_function_decl_with_spec ( | |
3344 | get_identifier (PREFIX("caf_co_max")), "WR.WW", | |
3345 | void_type_node, 7, pvoid_type_node, pvoid_type_node, integer_type_node, | |
3346 | pint_type, pchar_type_node, integer_type_node, integer_type_node); | |
3347 | ||
3348 | gfor_fndecl_co_min = gfc_build_library_function_decl_with_spec ( | |
3349 | get_identifier (PREFIX("caf_co_min")), "WR.WW", | |
3350 | void_type_node, 7, pvoid_type_node, pvoid_type_node, integer_type_node, | |
3351 | pint_type, pchar_type_node, integer_type_node, integer_type_node); | |
3352 | ||
3353 | gfor_fndecl_co_sum = gfc_build_library_function_decl_with_spec ( | |
3354 | get_identifier (PREFIX("caf_co_sum")), "WR.WW", | |
3355 | void_type_node, 6, pvoid_type_node, pvoid_type_node, integer_type_node, | |
3356 | pint_type, pchar_type_node, integer_type_node); | |
70b5944a | 3357 | } |
3358 | ||
4ee9c684 | 3359 | gfc_build_intrinsic_function_decls (); |
3360 | gfc_build_intrinsic_lib_fndecls (); | |
3361 | gfc_build_io_library_fndecls (); | |
3362 | } | |
3363 | ||
3364 | ||
231e961a | 3365 | /* Evaluate the length of dummy character variables. */ |
4ee9c684 | 3366 | |
c5faa799 | 3367 | static void |
3368 | gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, | |
3369 | gfc_wrapped_block *block) | |
4ee9c684 | 3370 | { |
c5faa799 | 3371 | stmtblock_t init; |
4ee9c684 | 3372 | |
b9c7fce7 | 3373 | gfc_finish_decl (cl->backend_decl); |
4ee9c684 | 3374 | |
c5faa799 | 3375 | gfc_start_block (&init); |
4ee9c684 | 3376 | |
3377 | /* Evaluate the string length expression. */ | |
c5faa799 | 3378 | gfc_conv_string_length (cl, NULL, &init); |
d4163395 | 3379 | |
c5faa799 | 3380 | gfc_trans_vla_type_sizes (sym, &init); |
d4163395 | 3381 | |
c5faa799 | 3382 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
4ee9c684 | 3383 | } |
3384 | ||
3385 | ||
3386 | /* Allocate and cleanup an automatic character variable. */ | |
3387 | ||
c5faa799 | 3388 | static void |
3389 | gfc_trans_auto_character_variable (gfc_symbol * sym, gfc_wrapped_block * block) | |
4ee9c684 | 3390 | { |
c5faa799 | 3391 | stmtblock_t init; |
4ee9c684 | 3392 | tree decl; |
4ee9c684 | 3393 | tree tmp; |
3394 | ||
22d678e8 | 3395 | gcc_assert (sym->backend_decl); |
eeebe20b | 3396 | gcc_assert (sym->ts.u.cl && sym->ts.u.cl->length); |
4ee9c684 | 3397 | |
3714c8b6 | 3398 | gfc_init_block (&init); |
4ee9c684 | 3399 | |
3400 | /* Evaluate the string length expression. */ | |
c5faa799 | 3401 | gfc_conv_string_length (sym->ts.u.cl, NULL, &init); |
4ee9c684 | 3402 | |
c5faa799 | 3403 | gfc_trans_vla_type_sizes (sym, &init); |
d4163395 | 3404 | |
4ee9c684 | 3405 | decl = sym->backend_decl; |
3406 | ||
afcf285e | 3407 | /* Emit a DECL_EXPR for this variable, which will cause the |
4b3a701c | 3408 | gimplifier to allocate storage, and all that good stuff. */ |
fd779e1d | 3409 | tmp = fold_build1_loc (input_location, DECL_EXPR, TREE_TYPE (decl), decl); |
c5faa799 | 3410 | gfc_add_expr_to_block (&init, tmp); |
afcf285e | 3411 | |
c5faa799 | 3412 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
4ee9c684 | 3413 | } |
3414 | ||
c8f1568f | 3415 | /* Set the initial value of ASSIGN statement auxiliary variable explicitly. */ |
3416 | ||
c5faa799 | 3417 | static void |
3418 | gfc_trans_assign_aux_var (gfc_symbol * sym, gfc_wrapped_block * block) | |
c8f1568f | 3419 | { |
c5faa799 | 3420 | stmtblock_t init; |
c8f1568f | 3421 | |
3422 | gcc_assert (sym->backend_decl); | |
c5faa799 | 3423 | gfc_start_block (&init); |
c8f1568f | 3424 | |
3425 | /* Set the initial value to length. See the comments in | |
3426 | function gfc_add_assign_aux_vars in this file. */ | |
c5faa799 | 3427 | gfc_add_modify (&init, GFC_DECL_STRING_LEN (sym->backend_decl), |
35bf1214 | 3428 | build_int_cst (gfc_charlen_type_node, -2)); |
c8f1568f | 3429 | |
c5faa799 | 3430 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
c8f1568f | 3431 | } |
3432 | ||
d4163395 | 3433 | static void |
3434 | gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body) | |
3435 | { | |
3436 | tree t = *tp, var, val; | |
3437 | ||
3438 | if (t == NULL || t == error_mark_node) | |
3439 | return; | |
3440 | if (TREE_CONSTANT (t) || DECL_P (t)) | |
3441 | return; | |
3442 | ||
3443 | if (TREE_CODE (t) == SAVE_EXPR) | |
3444 | { | |
3445 | if (SAVE_EXPR_RESOLVED_P (t)) | |
3446 | { | |
3447 | *tp = TREE_OPERAND (t, 0); | |
3448 | return; | |
3449 | } | |
3450 | val = TREE_OPERAND (t, 0); | |
3451 | } | |
3452 | else | |
3453 | val = t; | |
3454 | ||
3455 | var = gfc_create_var_np (TREE_TYPE (t), NULL); | |
3456 | gfc_add_decl_to_function (var); | |
75a70cf9 | 3457 | gfc_add_modify (body, var, val); |
d4163395 | 3458 | if (TREE_CODE (t) == SAVE_EXPR) |
3459 | TREE_OPERAND (t, 0) = var; | |
3460 | *tp = var; | |
3461 | } | |
3462 | ||
3463 | static void | |
3464 | gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body) | |
3465 | { | |
3466 | tree t; | |
3467 | ||
3468 | if (type == NULL || type == error_mark_node) | |
3469 | return; | |
3470 | ||
3471 | type = TYPE_MAIN_VARIANT (type); | |
3472 | ||
3473 | if (TREE_CODE (type) == INTEGER_TYPE) | |
3474 | { | |
3475 | gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body); | |
3476 | gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body); | |
3477 | ||
3478 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3479 | { | |
3480 | TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type); | |
3481 | TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type); | |
3482 | } | |
3483 | } | |
3484 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
3485 | { | |
3486 | gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body); | |
3487 | gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body); | |
3488 | gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body); | |
3489 | gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body); | |
3490 | ||
3491 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3492 | { | |
3493 | TYPE_SIZE (t) = TYPE_SIZE (type); | |
3494 | TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type); | |
3495 | } | |
3496 | } | |
3497 | } | |
3498 | ||
3499 | /* Make sure all type sizes and array domains are either constant, | |
3500 | or variable or parameter decls. This is a simplified variant | |
3501 | of gimplify_type_sizes, but we can't use it here, as none of the | |
3502 | variables in the expressions have been gimplified yet. | |
3503 | As type sizes and domains for various variable length arrays | |
3504 | contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars | |
3505 | time, without this routine gimplify_type_sizes in the middle-end | |
3506 | could result in the type sizes being gimplified earlier than where | |
3507 | those variables are initialized. */ | |
3508 | ||
3509 | void | |
3510 | gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body) | |
3511 | { | |
3512 | tree type = TREE_TYPE (sym->backend_decl); | |
3513 | ||
3514 | if (TREE_CODE (type) == FUNCTION_TYPE | |
3515 | && (sym->attr.function || sym->attr.result || sym->attr.entry)) | |
3516 | { | |
3517 | if (! current_fake_result_decl) | |
3518 | return; | |
3519 | ||
3520 | type = TREE_TYPE (TREE_VALUE (current_fake_result_decl)); | |
3521 | } | |
3522 | ||
3523 | while (POINTER_TYPE_P (type)) | |
3524 | type = TREE_TYPE (type); | |
3525 | ||
3526 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
3527 | { | |
3528 | tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type); | |
3529 | ||
3530 | while (POINTER_TYPE_P (etype)) | |
3531 | etype = TREE_TYPE (etype); | |
3532 | ||
3533 | gfc_trans_vla_type_sizes_1 (etype, body); | |
3534 | } | |
3535 | ||
3536 | gfc_trans_vla_type_sizes_1 (type, body); | |
3537 | } | |
3538 | ||
4ee9c684 | 3539 | |
f0d4969f | 3540 | /* Initialize a derived type by building an lvalue from the symbol |
a545a8f8 | 3541 | and using trans_assignment to do the work. Set dealloc to false |
3542 | if no deallocation prior the assignment is needed. */ | |
c5faa799 | 3543 | void |
3544 | gfc_init_default_dt (gfc_symbol * sym, stmtblock_t * block, bool dealloc) | |
87114d2e | 3545 | { |
f0d4969f | 3546 | gfc_expr *e; |
87114d2e | 3547 | tree tmp; |
3548 | tree present; | |
3549 | ||
c5faa799 | 3550 | gcc_assert (block); |
3551 | ||
f0d4969f | 3552 | gcc_assert (!sym->attr.allocatable); |
3553 | gfc_set_sym_referenced (sym); | |
3554 | e = gfc_lval_expr_from_sym (sym); | |
a545a8f8 | 3555 | tmp = gfc_trans_assignment (e, sym->value, false, dealloc); |
c38054a8 | 3556 | if (sym->attr.dummy && (sym->attr.optional |
3557 | || sym->ns->proc_name->attr.entry_master)) | |
87114d2e | 3558 | { |
f0d4969f | 3559 | present = gfc_conv_expr_present (sym); |
2be9d8f1 | 3560 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), present, |
3561 | tmp, build_empty_stmt (input_location)); | |
87114d2e | 3562 | } |
c5faa799 | 3563 | gfc_add_expr_to_block (block, tmp); |
f0d4969f | 3564 | gfc_free_expr (e); |
87114d2e | 3565 | } |
3566 | ||
3567 | ||
8714fc76 | 3568 | /* Initialize INTENT(OUT) derived type dummies. As well as giving |
3569 | them their default initializer, if they do not have allocatable | |
3570 | components, they have their allocatable components deallocated. */ | |
3571 | ||
c5faa799 | 3572 | static void |
3573 | init_intent_out_dt (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
f0d4969f | 3574 | { |
c5faa799 | 3575 | stmtblock_t init; |
f0d4969f | 3576 | gfc_formal_arglist *f; |
8714fc76 | 3577 | tree tmp; |
5907c3ea | 3578 | tree present; |
f0d4969f | 3579 | |
c5faa799 | 3580 | gfc_init_block (&init); |
6777213b | 3581 | for (f = gfc_sym_get_dummy_args (proc_sym); f; f = f->next) |
f0d4969f | 3582 | if (f->sym && f->sym->attr.intent == INTENT_OUT |
c49db15e | 3583 | && !f->sym->attr.pointer |
3584 | && f->sym->ts.type == BT_DERIVED) | |
8714fc76 | 3585 | { |
942ba353 | 3586 | tmp = NULL_TREE; |
3587 | ||
3588 | /* Note: Allocatables are excluded as they are already handled | |
3589 | by the caller. */ | |
3590 | if (!f->sym->attr.allocatable | |
3591 | && gfc_is_finalizable (f->sym->ts.u.derived, NULL)) | |
8714fc76 | 3592 | { |
942ba353 | 3593 | stmtblock_t block; |
3594 | gfc_expr *e; | |
3595 | ||
3596 | gfc_init_block (&block); | |
3597 | f->sym->attr.referenced = 1; | |
3598 | e = gfc_lval_expr_from_sym (f->sym); | |
3599 | gfc_add_finalizer_call (&block, e); | |
3600 | gfc_free_expr (e); | |
3601 | tmp = gfc_finish_block (&block); | |
3602 | } | |
5907c3ea | 3603 | |
942ba353 | 3604 | if (tmp == NULL_TREE && !f->sym->attr.allocatable |
3605 | && f->sym->ts.u.derived->attr.alloc_comp && !f->sym->value) | |
3606 | tmp = gfc_deallocate_alloc_comp (f->sym->ts.u.derived, | |
3607 | f->sym->backend_decl, | |
3608 | f->sym->as ? f->sym->as->rank : 0); | |
5907c3ea | 3609 | |
942ba353 | 3610 | if (tmp != NULL_TREE && (f->sym->attr.optional |
3611 | || f->sym->ns->proc_name->attr.entry_master)) | |
3612 | { | |
3613 | present = gfc_conv_expr_present (f->sym); | |
3614 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), | |
3615 | present, tmp, build_empty_stmt (input_location)); | |
8714fc76 | 3616 | } |
942ba353 | 3617 | |
3618 | if (tmp != NULL_TREE) | |
3619 | gfc_add_expr_to_block (&init, tmp); | |
3620 | else if (f->sym->value && !f->sym->attr.allocatable) | |
c5faa799 | 3621 | gfc_init_default_dt (f->sym, &init, true); |
8714fc76 | 3622 | } |
c56d57d6 | 3623 | else if (f->sym && f->sym->attr.intent == INTENT_OUT |
3624 | && f->sym->ts.type == BT_CLASS | |
3625 | && !CLASS_DATA (f->sym)->attr.class_pointer | |
942ba353 | 3626 | && !CLASS_DATA (f->sym)->attr.allocatable) |
c56d57d6 | 3627 | { |
942ba353 | 3628 | stmtblock_t block; |
3629 | gfc_expr *e; | |
3630 | ||
3631 | gfc_init_block (&block); | |
3632 | f->sym->attr.referenced = 1; | |
3633 | e = gfc_lval_expr_from_sym (f->sym); | |
3634 | gfc_add_finalizer_call (&block, e); | |
3635 | gfc_free_expr (e); | |
3636 | tmp = gfc_finish_block (&block); | |
c56d57d6 | 3637 | |
3638 | if (f->sym->attr.optional || f->sym->ns->proc_name->attr.entry_master) | |
3639 | { | |
3640 | present = gfc_conv_expr_present (f->sym); | |
3641 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), | |
3642 | present, tmp, | |
3643 | build_empty_stmt (input_location)); | |
3644 | } | |
3645 | ||
3646 | gfc_add_expr_to_block (&init, tmp); | |
3647 | } | |
f0d4969f | 3648 | |
c5faa799 | 3649 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
f0d4969f | 3650 | } |
3651 | ||
87114d2e | 3652 | |
4ee9c684 | 3653 | /* Generate function entry and exit code, and add it to the function body. |
3654 | This includes: | |
f888a3fb | 3655 | Allocation and initialization of array variables. |
4ee9c684 | 3656 | Allocation of character string variables. |
c8f1568f | 3657 | Initialization and possibly repacking of dummy arrays. |
0a96a7cc | 3658 | Initialization of ASSIGN statement auxiliary variable. |
8f3f9eab | 3659 | Initialization of ASSOCIATE names. |
0a96a7cc | 3660 | Automatic deallocation. */ |
4ee9c684 | 3661 | |
89ac8ba1 | 3662 | void |
3663 | gfc_trans_deferred_vars (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
4ee9c684 | 3664 | { |
3665 | locus loc; | |
3666 | gfc_symbol *sym; | |
d4163395 | 3667 | gfc_formal_arglist *f; |
c5faa799 | 3668 | stmtblock_t tmpblock; |
25dd7350 | 3669 | bool seen_trans_deferred_array = false; |
617125a6 | 3670 | tree tmp = NULL; |
3671 | gfc_expr *e; | |
3672 | gfc_se se; | |
3673 | stmtblock_t init; | |
4ee9c684 | 3674 | |
3675 | /* Deal with implicit return variables. Explicit return variables will | |
3676 | already have been added. */ | |
3677 | if (gfc_return_by_reference (proc_sym) && proc_sym->result == proc_sym) | |
3678 | { | |
3679 | if (!current_fake_result_decl) | |
3680 | { | |
c6871095 | 3681 | gfc_entry_list *el = NULL; |
3682 | if (proc_sym->attr.entry_master) | |
3683 | { | |
3684 | for (el = proc_sym->ns->entries; el; el = el->next) | |
3685 | if (el->sym != el->sym->result) | |
3686 | break; | |
3687 | } | |
fa7b6574 | 3688 | /* TODO: move to the appropriate place in resolve.c. */ |
3689 | if (warn_return_type && el == NULL) | |
3690 | gfc_warning ("Return value of function '%s' at %L not set", | |
3691 | proc_sym->name, &proc_sym->declared_at); | |
4ee9c684 | 3692 | } |
c6871095 | 3693 | else if (proc_sym->as) |
4ee9c684 | 3694 | { |
d4163395 | 3695 | tree result = TREE_VALUE (current_fake_result_decl); |
89ac8ba1 | 3696 | gfc_trans_dummy_array_bias (proc_sym, result, block); |
10b07432 | 3697 | |
3698 | /* An automatic character length, pointer array result. */ | |
3699 | if (proc_sym->ts.type == BT_CHARACTER | |
eeebe20b | 3700 | && TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) |
89ac8ba1 | 3701 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
4ee9c684 | 3702 | } |
3703 | else if (proc_sym->ts.type == BT_CHARACTER) | |
3704 | { | |
617125a6 | 3705 | if (proc_sym->ts.deferred) |
3706 | { | |
3707 | tmp = NULL; | |
da2c4122 | 3708 | gfc_save_backend_locus (&loc); |
3709 | gfc_set_backend_locus (&proc_sym->declared_at); | |
617125a6 | 3710 | gfc_start_block (&init); |
3711 | /* Zero the string length on entry. */ | |
3712 | gfc_add_modify (&init, proc_sym->ts.u.cl->backend_decl, | |
3713 | build_int_cst (gfc_charlen_type_node, 0)); | |
3714 | /* Null the pointer. */ | |
3715 | e = gfc_lval_expr_from_sym (proc_sym); | |
3716 | gfc_init_se (&se, NULL); | |
3717 | se.want_pointer = 1; | |
3718 | gfc_conv_expr (&se, e); | |
3719 | gfc_free_expr (e); | |
3720 | tmp = se.expr; | |
3721 | gfc_add_modify (&init, tmp, | |
3722 | fold_convert (TREE_TYPE (se.expr), | |
3723 | null_pointer_node)); | |
da2c4122 | 3724 | gfc_restore_backend_locus (&loc); |
617125a6 | 3725 | |
3726 | /* Pass back the string length on exit. */ | |
3727 | tmp = proc_sym->ts.u.cl->passed_length; | |
3728 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
3729 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
3730 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
3731 | gfc_charlen_type_node, tmp, | |
3732 | proc_sym->ts.u.cl->backend_decl); | |
3733 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
3734 | } | |
3735 | else if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) | |
89ac8ba1 | 3736 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
4ee9c684 | 3737 | } |
3738 | else | |
bdaed7d2 | 3739 | gcc_assert (gfc_option.flag_f2c |
3740 | && proc_sym->ts.type == BT_COMPLEX); | |
4ee9c684 | 3741 | } |
3742 | ||
87114d2e | 3743 | /* Initialize the INTENT(OUT) derived type dummy arguments. This |
3744 | should be done here so that the offsets and lbounds of arrays | |
3745 | are available. */ | |
da2c4122 | 3746 | gfc_save_backend_locus (&loc); |
3747 | gfc_set_backend_locus (&proc_sym->declared_at); | |
89ac8ba1 | 3748 | init_intent_out_dt (proc_sym, block); |
da2c4122 | 3749 | gfc_restore_backend_locus (&loc); |
87114d2e | 3750 | |
4ee9c684 | 3751 | for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink) |
3752 | { | |
6b3ceb4e | 3753 | bool alloc_comp_or_fini = (sym->ts.type == BT_DERIVED) |
3754 | && (sym->ts.u.derived->attr.alloc_comp | |
3755 | || gfc_is_finalizable (sym->ts.u.derived, | |
3756 | NULL)); | |
8f3f9eab | 3757 | if (sym->assoc) |
3c82e013 | 3758 | continue; |
3759 | ||
a56d63bc | 3760 | if (sym->attr.subref_array_pointer |
3761 | && GFC_DECL_SPAN (sym->backend_decl) | |
3762 | && !TREE_STATIC (GFC_DECL_SPAN (sym->backend_decl))) | |
3763 | { | |
3764 | gfc_init_block (&tmpblock); | |
3765 | gfc_add_modify (&tmpblock, GFC_DECL_SPAN (sym->backend_decl), | |
3766 | build_int_cst (gfc_array_index_type, 0)); | |
3767 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
3768 | NULL_TREE); | |
3769 | } | |
3770 | ||
85ae3cab | 3771 | if (sym->ts.type == BT_CLASS |
3772 | && (sym->attr.save || gfc_option.flag_max_stack_var_size == 0) | |
fb139b21 | 3773 | && CLASS_DATA (sym)->attr.allocatable) |
3774 | { | |
3775 | tree vptr; | |
3776 | ||
3777 | if (UNLIMITED_POLY (sym)) | |
3778 | vptr = null_pointer_node; | |
3779 | else | |
3780 | { | |
3781 | gfc_symbol *vsym; | |
3782 | vsym = gfc_find_derived_vtab (sym->ts.u.derived); | |
3783 | vptr = gfc_get_symbol_decl (vsym); | |
3784 | vptr = gfc_build_addr_expr (NULL, vptr); | |
3785 | } | |
3786 | ||
3787 | if (CLASS_DATA (sym)->attr.dimension | |
3788 | || (CLASS_DATA (sym)->attr.codimension | |
3789 | && gfc_option.coarray != GFC_FCOARRAY_LIB)) | |
3790 | { | |
3791 | tmp = gfc_class_data_get (sym->backend_decl); | |
3792 | tmp = gfc_build_null_descriptor (TREE_TYPE (tmp)); | |
3793 | } | |
3794 | else | |
3795 | tmp = null_pointer_node; | |
3796 | ||
3797 | DECL_INITIAL (sym->backend_decl) | |
3798 | = gfc_class_set_static_fields (sym->backend_decl, vptr, tmp); | |
3799 | TREE_CONSTANT (DECL_INITIAL (sym->backend_decl)) = 1; | |
3800 | } | |
3801 | else if (sym->attr.dimension || sym->attr.codimension) | |
4ee9c684 | 3802 | { |
f7a6fca4 | 3803 | /* Assumed-size Cray pointees need to be treated as AS_EXPLICIT. */ |
3804 | array_type tmp = sym->as->type; | |
3805 | if (tmp == AS_ASSUMED_SIZE && sym->as->cp_was_assumed) | |
3806 | tmp = AS_EXPLICIT; | |
3807 | switch (tmp) | |
4ee9c684 | 3808 | { |
3809 | case AS_EXPLICIT: | |
3810 | if (sym->attr.dummy || sym->attr.result) | |
89ac8ba1 | 3811 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
4ee9c684 | 3812 | else if (sym->attr.pointer || sym->attr.allocatable) |
3813 | { | |
3814 | if (TREE_STATIC (sym->backend_decl)) | |
da2c4122 | 3815 | { |
3816 | gfc_save_backend_locus (&loc); | |
3817 | gfc_set_backend_locus (&sym->declared_at); | |
3818 | gfc_trans_static_array_pointer (sym); | |
3819 | gfc_restore_backend_locus (&loc); | |
3820 | } | |
4ee9c684 | 3821 | else |
25dd7350 | 3822 | { |
3823 | seen_trans_deferred_array = true; | |
89ac8ba1 | 3824 | gfc_trans_deferred_array (sym, block); |
25dd7350 | 3825 | } |
4ee9c684 | 3826 | } |
7c7db7f6 | 3827 | else if (sym->attr.codimension && TREE_STATIC (sym->backend_decl)) |
3828 | { | |
3829 | gfc_init_block (&tmpblock); | |
3830 | gfc_trans_array_cobounds (TREE_TYPE (sym->backend_decl), | |
3831 | &tmpblock, sym); | |
3832 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), | |
3833 | NULL_TREE); | |
3834 | continue; | |
3835 | } | |
a961ca30 | 3836 | else if (gfc_option.coarray != GFC_FCOARRAY_LIB) |
4ee9c684 | 3837 | { |
da2c4122 | 3838 | gfc_save_backend_locus (&loc); |
3839 | gfc_set_backend_locus (&sym->declared_at); | |
3840 | ||
6b3ceb4e | 3841 | if (alloc_comp_or_fini) |
25dd7350 | 3842 | { |
3843 | seen_trans_deferred_array = true; | |
89ac8ba1 | 3844 | gfc_trans_deferred_array (sym, block); |
25dd7350 | 3845 | } |
f0d4969f | 3846 | else if (sym->ts.type == BT_DERIVED |
3847 | && sym->value | |
3848 | && !sym->attr.data | |
3849 | && sym->attr.save == SAVE_NONE) | |
c5faa799 | 3850 | { |
3851 | gfc_start_block (&tmpblock); | |
3852 | gfc_init_default_dt (sym, &tmpblock, false); | |
89ac8ba1 | 3853 | gfc_add_init_cleanup (block, |
c5faa799 | 3854 | gfc_finish_block (&tmpblock), |
3855 | NULL_TREE); | |
3856 | } | |
25dd7350 | 3857 | |
c5faa799 | 3858 | gfc_trans_auto_array_allocation (sym->backend_decl, |
89ac8ba1 | 3859 | sym, block); |
4671339c | 3860 | gfc_restore_backend_locus (&loc); |
4ee9c684 | 3861 | } |
3862 | break; | |
3863 | ||
3864 | case AS_ASSUMED_SIZE: | |
3865 | /* Must be a dummy parameter. */ | |
452695a8 | 3866 | gcc_assert (sym->attr.dummy || sym->as->cp_was_assumed); |
4ee9c684 | 3867 | |
3868 | /* We should always pass assumed size arrays the g77 way. */ | |
452695a8 | 3869 | if (sym->attr.dummy) |
89ac8ba1 | 3870 | gfc_trans_g77_array (sym, block); |
c5faa799 | 3871 | break; |
4ee9c684 | 3872 | |
3873 | case AS_ASSUMED_SHAPE: | |
3874 | /* Must be a dummy parameter. */ | |
22d678e8 | 3875 | gcc_assert (sym->attr.dummy); |
4ee9c684 | 3876 | |
89ac8ba1 | 3877 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
4ee9c684 | 3878 | break; |
3879 | ||
f00f6dd6 | 3880 | case AS_ASSUMED_RANK: |
4ee9c684 | 3881 | case AS_DEFERRED: |
25dd7350 | 3882 | seen_trans_deferred_array = true; |
89ac8ba1 | 3883 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 3884 | break; |
3885 | ||
3886 | default: | |
22d678e8 | 3887 | gcc_unreachable (); |
4ee9c684 | 3888 | } |
6b3ceb4e | 3889 | if (alloc_comp_or_fini && !seen_trans_deferred_array) |
89ac8ba1 | 3890 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 3891 | } |
fd23cc08 | 3892 | else if ((!sym->attr.dummy || sym->ts.deferred) |
3893 | && (sym->ts.type == BT_CLASS | |
3a19c063 | 3894 | && CLASS_DATA (sym)->attr.class_pointer)) |
2930c007 | 3895 | continue; |
617125a6 | 3896 | else if ((!sym->attr.dummy || sym->ts.deferred) |
456dd7d6 | 3897 | && (sym->attr.allocatable |
3898 | || (sym->ts.type == BT_CLASS | |
3899 | && CLASS_DATA (sym)->attr.allocatable))) | |
0a96a7cc | 3900 | { |
be125be0 | 3901 | if (!sym->attr.save && gfc_option.flag_max_stack_var_size != 0) |
908e9973 | 3902 | { |
d0d776fb | 3903 | tree descriptor = NULL_TREE; |
3904 | ||
908e9973 | 3905 | /* Nullify and automatic deallocation of allocatable |
3906 | scalars. */ | |
908e9973 | 3907 | e = gfc_lval_expr_from_sym (sym); |
3908 | if (sym->ts.type == BT_CLASS) | |
607ae689 | 3909 | gfc_add_data_component (e); |
908e9973 | 3910 | |
3911 | gfc_init_se (&se, NULL); | |
fd23cc08 | 3912 | if (sym->ts.type != BT_CLASS |
3913 | || sym->ts.u.derived->attr.dimension | |
3914 | || sym->ts.u.derived->attr.codimension) | |
3915 | { | |
3916 | se.want_pointer = 1; | |
3917 | gfc_conv_expr (&se, e); | |
3918 | } | |
3919 | else if (sym->ts.type == BT_CLASS | |
3920 | && !CLASS_DATA (sym)->attr.dimension | |
3921 | && !CLASS_DATA (sym)->attr.codimension) | |
3922 | { | |
3923 | se.want_pointer = 1; | |
3924 | gfc_conv_expr (&se, e); | |
3925 | } | |
3926 | else | |
3927 | { | |
3928 | gfc_conv_expr (&se, e); | |
d0d776fb | 3929 | descriptor = se.expr; |
fd23cc08 | 3930 | se.expr = gfc_conv_descriptor_data_addr (se.expr); |
3931 | se.expr = build_fold_indirect_ref_loc (input_location, se.expr); | |
3932 | } | |
908e9973 | 3933 | gfc_free_expr (e); |
3934 | ||
da2c4122 | 3935 | gfc_save_backend_locus (&loc); |
3936 | gfc_set_backend_locus (&sym->declared_at); | |
c5faa799 | 3937 | gfc_start_block (&init); |
617125a6 | 3938 | |
3939 | if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
3940 | { | |
3941 | /* Nullify when entering the scope. */ | |
883d6776 | 3942 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
3943 | TREE_TYPE (se.expr), se.expr, | |
3944 | fold_convert (TREE_TYPE (se.expr), | |
3945 | null_pointer_node)); | |
3946 | if (sym->attr.optional) | |
3947 | { | |
3948 | tree present = gfc_conv_expr_present (sym); | |
3949 | tmp = build3_loc (input_location, COND_EXPR, | |
3950 | void_type_node, present, tmp, | |
3951 | build_empty_stmt (input_location)); | |
3952 | } | |
3953 | gfc_add_expr_to_block (&init, tmp); | |
617125a6 | 3954 | } |
3955 | ||
883d6776 | 3956 | if ((sym->attr.dummy || sym->attr.result) |
617125a6 | 3957 | && sym->ts.type == BT_CHARACTER |
3958 | && sym->ts.deferred) | |
3959 | { | |
3960 | /* Character length passed by reference. */ | |
3961 | tmp = sym->ts.u.cl->passed_length; | |
3962 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
3963 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
3964 | ||
3965 | if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
3966 | /* Zero the string length when entering the scope. */ | |
3967 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, | |
3968 | build_int_cst (gfc_charlen_type_node, 0)); | |
3969 | else | |
883d6776 | 3970 | { |
3971 | tree tmp2; | |
3972 | ||
3973 | tmp2 = fold_build2_loc (input_location, MODIFY_EXPR, | |
3974 | gfc_charlen_type_node, | |
3975 | sym->ts.u.cl->backend_decl, tmp); | |
3976 | if (sym->attr.optional) | |
3977 | { | |
3978 | tree present = gfc_conv_expr_present (sym); | |
3979 | tmp2 = build3_loc (input_location, COND_EXPR, | |
3980 | void_type_node, present, tmp2, | |
3981 | build_empty_stmt (input_location)); | |
3982 | } | |
3983 | gfc_add_expr_to_block (&init, tmp2); | |
3984 | } | |
617125a6 | 3985 | |
da2c4122 | 3986 | gfc_restore_backend_locus (&loc); |
3987 | ||
617125a6 | 3988 | /* Pass the final character length back. */ |
3989 | if (sym->attr.intent != INTENT_IN) | |
883d6776 | 3990 | { |
3991 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
3992 | gfc_charlen_type_node, tmp, | |
3993 | sym->ts.u.cl->backend_decl); | |
3994 | if (sym->attr.optional) | |
3995 | { | |
3996 | tree present = gfc_conv_expr_present (sym); | |
3997 | tmp = build3_loc (input_location, COND_EXPR, | |
3998 | void_type_node, present, tmp, | |
3999 | build_empty_stmt (input_location)); | |
4000 | } | |
4001 | } | |
617125a6 | 4002 | else |
4003 | tmp = NULL_TREE; | |
4004 | } | |
da2c4122 | 4005 | else |
4006 | gfc_restore_backend_locus (&loc); | |
908e9973 | 4007 | |
4008 | /* Deallocate when leaving the scope. Nullifying is not | |
4009 | needed. */ | |
afb69dbf | 4010 | if (!sym->attr.result && !sym->attr.dummy |
4011 | && !sym->ns->proc_name->attr.is_main_program) | |
d0d776fb | 4012 | { |
4013 | if (sym->ts.type == BT_CLASS | |
4014 | && CLASS_DATA (sym)->attr.codimension) | |
4015 | tmp = gfc_deallocate_with_status (descriptor, NULL_TREE, | |
4016 | NULL_TREE, NULL_TREE, | |
4017 | NULL_TREE, true, NULL, | |
4018 | true); | |
4019 | else | |
c23adf93 | 4020 | { |
4021 | gfc_expr *expr = gfc_lval_expr_from_sym (sym); | |
4022 | tmp = gfc_deallocate_scalar_with_status (se.expr, NULL_TREE, | |
4023 | true, expr, sym->ts); | |
4024 | gfc_free_expr (expr); | |
4025 | } | |
d0d776fb | 4026 | } |
afc44c79 | 4027 | if (sym->ts.type == BT_CLASS) |
4028 | { | |
4029 | /* Initialize _vptr to declared type. */ | |
a90fe829 | 4030 | gfc_symbol *vtab; |
afc44c79 | 4031 | tree rhs; |
da2c4122 | 4032 | |
4033 | gfc_save_backend_locus (&loc); | |
4034 | gfc_set_backend_locus (&sym->declared_at); | |
afc44c79 | 4035 | e = gfc_lval_expr_from_sym (sym); |
4036 | gfc_add_vptr_component (e); | |
4037 | gfc_init_se (&se, NULL); | |
4038 | se.want_pointer = 1; | |
4039 | gfc_conv_expr (&se, e); | |
4040 | gfc_free_expr (e); | |
a90fe829 | 4041 | if (UNLIMITED_POLY (sym)) |
4042 | rhs = build_int_cst (TREE_TYPE (se.expr), 0); | |
4043 | else | |
4044 | { | |
4045 | vtab = gfc_find_derived_vtab (sym->ts.u.derived); | |
4046 | rhs = gfc_build_addr_expr (TREE_TYPE (se.expr), | |
4047 | gfc_get_symbol_decl (vtab)); | |
4048 | } | |
afc44c79 | 4049 | gfc_add_modify (&init, se.expr, rhs); |
da2c4122 | 4050 | gfc_restore_backend_locus (&loc); |
afc44c79 | 4051 | } |
4052 | ||
89ac8ba1 | 4053 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); |
908e9973 | 4054 | } |
0a96a7cc | 4055 | } |
617125a6 | 4056 | else if (sym->ts.type == BT_CHARACTER && sym->ts.deferred) |
4057 | { | |
4058 | tree tmp = NULL; | |
4059 | stmtblock_t init; | |
4060 | ||
4061 | /* If we get to here, all that should be left are pointers. */ | |
4062 | gcc_assert (sym->attr.pointer); | |
4063 | ||
4064 | if (sym->attr.dummy) | |
4065 | { | |
4066 | gfc_start_block (&init); | |
4067 | ||
4068 | /* Character length passed by reference. */ | |
4069 | tmp = sym->ts.u.cl->passed_length; | |
4070 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
4071 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
4072 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, tmp); | |
4073 | /* Pass the final character length back. */ | |
4074 | if (sym->attr.intent != INTENT_IN) | |
4075 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
4076 | gfc_charlen_type_node, tmp, | |
4077 | sym->ts.u.cl->backend_decl); | |
4078 | else | |
4079 | tmp = NULL_TREE; | |
4080 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
4081 | } | |
4082 | } | |
3e715c81 | 4083 | else if (sym->ts.deferred) |
4084 | gfc_fatal_error ("Deferred type parameter not yet supported"); | |
6b3ceb4e | 4085 | else if (alloc_comp_or_fini) |
89ac8ba1 | 4086 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 4087 | else if (sym->ts.type == BT_CHARACTER) |
4088 | { | |
4671339c | 4089 | gfc_save_backend_locus (&loc); |
4ee9c684 | 4090 | gfc_set_backend_locus (&sym->declared_at); |
4091 | if (sym->attr.dummy || sym->attr.result) | |
89ac8ba1 | 4092 | gfc_trans_dummy_character (sym, sym->ts.u.cl, block); |
4ee9c684 | 4093 | else |
89ac8ba1 | 4094 | gfc_trans_auto_character_variable (sym, block); |
4671339c | 4095 | gfc_restore_backend_locus (&loc); |
4ee9c684 | 4096 | } |
c8f1568f | 4097 | else if (sym->attr.assign) |
4098 | { | |
4671339c | 4099 | gfc_save_backend_locus (&loc); |
c8f1568f | 4100 | gfc_set_backend_locus (&sym->declared_at); |
89ac8ba1 | 4101 | gfc_trans_assign_aux_var (sym, block); |
4671339c | 4102 | gfc_restore_backend_locus (&loc); |
c8f1568f | 4103 | } |
f0d4969f | 4104 | else if (sym->ts.type == BT_DERIVED |
4105 | && sym->value | |
4106 | && !sym->attr.data | |
4107 | && sym->attr.save == SAVE_NONE) | |
c5faa799 | 4108 | { |
4109 | gfc_start_block (&tmpblock); | |
4110 | gfc_init_default_dt (sym, &tmpblock, false); | |
89ac8ba1 | 4111 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), |
c5faa799 | 4112 | NULL_TREE); |
4113 | } | |
a90fe829 | 4114 | else if (!(UNLIMITED_POLY(sym))) |
22d678e8 | 4115 | gcc_unreachable (); |
4ee9c684 | 4116 | } |
4117 | ||
c5faa799 | 4118 | gfc_init_block (&tmpblock); |
d4163395 | 4119 | |
6777213b | 4120 | for (f = gfc_sym_get_dummy_args (proc_sym); f; f = f->next) |
1e853e89 | 4121 | { |
4122 | if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER) | |
4123 | { | |
eeebe20b | 4124 | gcc_assert (f->sym->ts.u.cl->backend_decl != NULL); |
4125 | if (TREE_CODE (f->sym->ts.u.cl->backend_decl) == PARM_DECL) | |
c5faa799 | 4126 | gfc_trans_vla_type_sizes (f->sym, &tmpblock); |
1e853e89 | 4127 | } |
1e853e89 | 4128 | } |
d4163395 | 4129 | |
4130 | if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER | |
4131 | && current_fake_result_decl != NULL) | |
4132 | { | |
eeebe20b | 4133 | gcc_assert (proc_sym->ts.u.cl->backend_decl != NULL); |
4134 | if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == PARM_DECL) | |
c5faa799 | 4135 | gfc_trans_vla_type_sizes (proc_sym, &tmpblock); |
d4163395 | 4136 | } |
4137 | ||
89ac8ba1 | 4138 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), NULL_TREE); |
4ee9c684 | 4139 | } |
4140 | ||
df4d540f | 4141 | static GTY ((param_is (struct module_htab_entry))) htab_t module_htab; |
4142 | ||
4143 | /* Hash and equality functions for module_htab. */ | |
4144 | ||
4145 | static hashval_t | |
4146 | module_htab_do_hash (const void *x) | |
4147 | { | |
4148 | return htab_hash_string (((const struct module_htab_entry *)x)->name); | |
4149 | } | |
4150 | ||
4151 | static int | |
4152 | module_htab_eq (const void *x1, const void *x2) | |
4153 | { | |
4154 | return strcmp ((((const struct module_htab_entry *)x1)->name), | |
4155 | (const char *)x2) == 0; | |
4156 | } | |
4157 | ||
4158 | /* Hash and equality functions for module_htab's decls. */ | |
4159 | ||
4160 | static hashval_t | |
4161 | module_htab_decls_hash (const void *x) | |
4162 | { | |
4163 | const_tree t = (const_tree) x; | |
4164 | const_tree n = DECL_NAME (t); | |
4165 | if (n == NULL_TREE) | |
4166 | n = TYPE_NAME (TREE_TYPE (t)); | |
8f1e8e0e | 4167 | return htab_hash_string (IDENTIFIER_POINTER (n)); |
df4d540f | 4168 | } |
4169 | ||
4170 | static int | |
4171 | module_htab_decls_eq (const void *x1, const void *x2) | |
4172 | { | |
4173 | const_tree t1 = (const_tree) x1; | |
4174 | const_tree n1 = DECL_NAME (t1); | |
4175 | if (n1 == NULL_TREE) | |
4176 | n1 = TYPE_NAME (TREE_TYPE (t1)); | |
4177 | return strcmp (IDENTIFIER_POINTER (n1), (const char *) x2) == 0; | |
4178 | } | |
4179 | ||
4180 | struct module_htab_entry * | |
4181 | gfc_find_module (const char *name) | |
4182 | { | |
4183 | void **slot; | |
4184 | ||
4185 | if (! module_htab) | |
4186 | module_htab = htab_create_ggc (10, module_htab_do_hash, | |
4187 | module_htab_eq, NULL); | |
4188 | ||
4189 | slot = htab_find_slot_with_hash (module_htab, name, | |
4190 | htab_hash_string (name), INSERT); | |
4191 | if (*slot == NULL) | |
4192 | { | |
25a27413 | 4193 | module_htab_entry *entry = ggc_cleared_alloc<module_htab_entry> (); |
df4d540f | 4194 | |
4195 | entry->name = gfc_get_string (name); | |
4196 | entry->decls = htab_create_ggc (10, module_htab_decls_hash, | |
4197 | module_htab_decls_eq, NULL); | |
4198 | *slot = (void *) entry; | |
4199 | } | |
4200 | return (struct module_htab_entry *) *slot; | |
4201 | } | |
4202 | ||
4203 | void | |
4204 | gfc_module_add_decl (struct module_htab_entry *entry, tree decl) | |
4205 | { | |
4206 | void **slot; | |
4207 | const char *name; | |
4208 | ||
4209 | if (DECL_NAME (decl)) | |
4210 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
4211 | else | |
4212 | { | |
4213 | gcc_assert (TREE_CODE (decl) == TYPE_DECL); | |
4214 | name = IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))); | |
4215 | } | |
4216 | slot = htab_find_slot_with_hash (entry->decls, name, | |
4217 | htab_hash_string (name), INSERT); | |
4218 | if (*slot == NULL) | |
4219 | *slot = (void *) decl; | |
4220 | } | |
4221 | ||
4222 | static struct module_htab_entry *cur_module; | |
4ee9c684 | 4223 | |
c40a5c1b | 4224 | |
4225 | /* Generate debugging symbols for namelists. This function must come after | |
4226 | generate_local_decl to ensure that the variables in the namelist are | |
4227 | already declared. */ | |
4228 | ||
4229 | static tree | |
4230 | generate_namelist_decl (gfc_symbol * sym) | |
4231 | { | |
4232 | gfc_namelist *nml; | |
4233 | tree decl; | |
4234 | vec<constructor_elt, va_gc> *nml_decls = NULL; | |
4235 | ||
4236 | gcc_assert (sym->attr.flavor == FL_NAMELIST); | |
4237 | for (nml = sym->namelist; nml; nml = nml->next) | |
4238 | { | |
4239 | if (nml->sym->backend_decl == NULL_TREE) | |
4240 | { | |
4241 | nml->sym->attr.referenced = 1; | |
4242 | nml->sym->backend_decl = gfc_get_symbol_decl (nml->sym); | |
4243 | } | |
0a32260c | 4244 | DECL_IGNORED_P (nml->sym->backend_decl) = 0; |
c40a5c1b | 4245 | CONSTRUCTOR_APPEND_ELT (nml_decls, NULL_TREE, nml->sym->backend_decl); |
4246 | } | |
4247 | ||
4248 | decl = make_node (NAMELIST_DECL); | |
4249 | TREE_TYPE (decl) = void_type_node; | |
4250 | NAMELIST_DECL_ASSOCIATED_DECL (decl) = build_constructor (NULL_TREE, nml_decls); | |
4251 | DECL_NAME (decl) = get_identifier (sym->name); | |
4252 | return decl; | |
4253 | } | |
4254 | ||
4255 | ||
4ee9c684 | 4256 | /* Output an initialized decl for a module variable. */ |
4257 | ||
4258 | static void | |
4259 | gfc_create_module_variable (gfc_symbol * sym) | |
4260 | { | |
4261 | tree decl; | |
4ee9c684 | 4262 | |
d77f260f | 4263 | /* Module functions with alternate entries are dealt with later and |
4264 | would get caught by the next condition. */ | |
4265 | if (sym->attr.entry) | |
4266 | return; | |
4267 | ||
c5d33754 | 4268 | /* Make sure we convert the types of the derived types from iso_c_binding |
4269 | into (void *). */ | |
4270 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
4271 | && sym->ts.type == BT_DERIVED) | |
4272 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
4273 | ||
df4d540f | 4274 | if (sym->attr.flavor == FL_DERIVED |
4275 | && sym->backend_decl | |
4276 | && TREE_CODE (sym->backend_decl) == RECORD_TYPE) | |
4277 | { | |
4278 | decl = sym->backend_decl; | |
4279 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
9f1470cb | 4280 | |
044bbd71 | 4281 | if (!sym->attr.use_assoc) |
9f1470cb | 4282 | { |
4283 | gcc_assert (TYPE_CONTEXT (decl) == NULL_TREE | |
4284 | || TYPE_CONTEXT (decl) == sym->ns->proc_name->backend_decl); | |
4285 | gcc_assert (DECL_CONTEXT (TYPE_STUB_DECL (decl)) == NULL_TREE | |
4286 | || DECL_CONTEXT (TYPE_STUB_DECL (decl)) | |
4287 | == sym->ns->proc_name->backend_decl); | |
4288 | } | |
df4d540f | 4289 | TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl; |
4290 | DECL_CONTEXT (TYPE_STUB_DECL (decl)) = sym->ns->proc_name->backend_decl; | |
4291 | gfc_module_add_decl (cur_module, TYPE_STUB_DECL (decl)); | |
4292 | } | |
4293 | ||
cf269acc | 4294 | /* Only output variables, procedure pointers and array valued, |
4295 | or derived type, parameters. */ | |
4ee9c684 | 4296 | if (sym->attr.flavor != FL_VARIABLE |
be0f1581 | 4297 | && !(sym->attr.flavor == FL_PARAMETER |
cf269acc | 4298 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) |
4299 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.proc_pointer)) | |
4ee9c684 | 4300 | return; |
4301 | ||
df4d540f | 4302 | if ((sym->attr.in_common || sym->attr.in_equivalence) && sym->backend_decl) |
4303 | { | |
4304 | decl = sym->backend_decl; | |
16a40513 | 4305 | gcc_assert (DECL_FILE_SCOPE_P (decl)); |
df4d540f | 4306 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); |
4307 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4308 | gfc_module_add_decl (cur_module, decl); | |
4309 | } | |
4310 | ||
d43a7f7f | 4311 | /* Don't generate variables from other modules. Variables from |
cd958916 | 4312 | COMMONs and Cray pointees will already have been generated. */ |
4313 | if (sym->attr.use_assoc || sym->attr.in_common || sym->attr.cray_pointee) | |
4ee9c684 | 4314 | return; |
4315 | ||
2b685f8e | 4316 | /* Equivalenced variables arrive here after creation. */ |
976d903a | 4317 | if (sym->backend_decl |
df4d540f | 4318 | && (sym->equiv_built || sym->attr.in_equivalence)) |
4319 | return; | |
2b685f8e | 4320 | |
23d075f4 | 4321 | if (sym->backend_decl && !sym->attr.vtab && !sym->attr.target) |
4ee9c684 | 4322 | internal_error ("backend decl for module variable %s already exists", |
4323 | sym->name); | |
4324 | ||
92983bfd | 4325 | if (sym->module && !sym->attr.result && !sym->attr.dummy |
4326 | && (sym->attr.access == ACCESS_UNKNOWN | |
4327 | && (sym->ns->default_access == ACCESS_PRIVATE | |
4328 | || (sym->ns->default_access == ACCESS_UNKNOWN | |
4329 | && gfc_option.flag_module_private)))) | |
4330 | sym->attr.access = ACCESS_PRIVATE; | |
4331 | ||
4332 | if (warn_unused_variable && !sym->attr.referenced | |
4333 | && sym->attr.access == ACCESS_PRIVATE) | |
4334 | gfc_warning ("Unused PRIVATE module variable '%s' declared at %L", | |
4335 | sym->name, &sym->declared_at); | |
4336 | ||
4ee9c684 | 4337 | /* We always want module variables to be created. */ |
4338 | sym->attr.referenced = 1; | |
4339 | /* Create the decl. */ | |
4340 | decl = gfc_get_symbol_decl (sym); | |
4341 | ||
4ee9c684 | 4342 | /* Create the variable. */ |
4343 | pushdecl (decl); | |
df4d540f | 4344 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); |
4345 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
b2c4af5e | 4346 | rest_of_decl_compilation (decl, 1, 0); |
df4d540f | 4347 | gfc_module_add_decl (cur_module, decl); |
4ee9c684 | 4348 | |
4349 | /* Also add length of strings. */ | |
4350 | if (sym->ts.type == BT_CHARACTER) | |
4351 | { | |
4352 | tree length; | |
4353 | ||
eeebe20b | 4354 | length = sym->ts.u.cl->backend_decl; |
cf4b41d8 | 4355 | gcc_assert (length || sym->attr.proc_pointer); |
4356 | if (length && !INTEGER_CST_P (length)) | |
4ee9c684 | 4357 | { |
4358 | pushdecl (length); | |
b2c4af5e | 4359 | rest_of_decl_compilation (length, 1, 0); |
4ee9c684 | 4360 | } |
4361 | } | |
a961ca30 | 4362 | |
4363 | if (sym->attr.codimension && !sym->attr.dummy && !sym->attr.allocatable | |
4364 | && sym->attr.referenced && !sym->attr.use_assoc) | |
4365 | has_coarray_vars = true; | |
4ee9c684 | 4366 | } |
4367 | ||
51d9479b | 4368 | /* Emit debug information for USE statements. */ |
df4d540f | 4369 | |
4370 | static void | |
4371 | gfc_trans_use_stmts (gfc_namespace * ns) | |
4372 | { | |
4373 | gfc_use_list *use_stmt; | |
4374 | for (use_stmt = ns->use_stmts; use_stmt; use_stmt = use_stmt->next) | |
4375 | { | |
4376 | struct module_htab_entry *entry | |
4377 | = gfc_find_module (use_stmt->module_name); | |
4378 | gfc_use_rename *rent; | |
4379 | ||
4380 | if (entry->namespace_decl == NULL) | |
4381 | { | |
4382 | entry->namespace_decl | |
e60a6f7b | 4383 | = build_decl (input_location, |
4384 | NAMESPACE_DECL, | |
df4d540f | 4385 | get_identifier (use_stmt->module_name), |
4386 | void_type_node); | |
4387 | DECL_EXTERNAL (entry->namespace_decl) = 1; | |
4388 | } | |
51d9479b | 4389 | gfc_set_backend_locus (&use_stmt->where); |
df4d540f | 4390 | if (!use_stmt->only_flag) |
4391 | (*debug_hooks->imported_module_or_decl) (entry->namespace_decl, | |
4392 | NULL_TREE, | |
4393 | ns->proc_name->backend_decl, | |
4394 | false); | |
4395 | for (rent = use_stmt->rename; rent; rent = rent->next) | |
4396 | { | |
4397 | tree decl, local_name; | |
4398 | void **slot; | |
4399 | ||
4400 | if (rent->op != INTRINSIC_NONE) | |
4401 | continue; | |
4402 | ||
4403 | slot = htab_find_slot_with_hash (entry->decls, rent->use_name, | |
4404 | htab_hash_string (rent->use_name), | |
4405 | INSERT); | |
4406 | if (*slot == NULL) | |
4407 | { | |
4408 | gfc_symtree *st; | |
4409 | ||
4410 | st = gfc_find_symtree (ns->sym_root, | |
4411 | rent->local_name[0] | |
4412 | ? rent->local_name : rent->use_name); | |
c2958b6b | 4413 | |
4414 | /* The following can happen if a derived type is renamed. */ | |
4415 | if (!st) | |
4416 | { | |
4417 | char *name; | |
4418 | name = xstrdup (rent->local_name[0] | |
4419 | ? rent->local_name : rent->use_name); | |
4420 | name[0] = (char) TOUPPER ((unsigned char) name[0]); | |
4421 | st = gfc_find_symtree (ns->sym_root, name); | |
4422 | free (name); | |
4423 | gcc_assert (st); | |
4424 | } | |
857c96ba | 4425 | |
4426 | /* Sometimes, generic interfaces wind up being over-ruled by a | |
4427 | local symbol (see PR41062). */ | |
4428 | if (!st->n.sym->attr.use_assoc) | |
4429 | continue; | |
4430 | ||
51d9479b | 4431 | if (st->n.sym->backend_decl |
4432 | && DECL_P (st->n.sym->backend_decl) | |
4433 | && st->n.sym->module | |
4434 | && strcmp (st->n.sym->module, use_stmt->module_name) == 0) | |
df4d540f | 4435 | { |
51d9479b | 4436 | gcc_assert (DECL_EXTERNAL (entry->namespace_decl) |
4437 | || (TREE_CODE (st->n.sym->backend_decl) | |
4438 | != VAR_DECL)); | |
df4d540f | 4439 | decl = copy_node (st->n.sym->backend_decl); |
4440 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
4441 | DECL_EXTERNAL (decl) = 1; | |
4442 | DECL_IGNORED_P (decl) = 0; | |
4443 | DECL_INITIAL (decl) = NULL_TREE; | |
4444 | } | |
c40a5c1b | 4445 | else if (st->n.sym->attr.flavor == FL_NAMELIST |
4446 | && st->n.sym->attr.use_only | |
4447 | && st->n.sym->module | |
4448 | && strcmp (st->n.sym->module, use_stmt->module_name) | |
4449 | == 0) | |
4450 | { | |
4451 | decl = generate_namelist_decl (st->n.sym); | |
4452 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
4453 | DECL_EXTERNAL (decl) = 1; | |
4454 | DECL_IGNORED_P (decl) = 0; | |
4455 | DECL_INITIAL (decl) = NULL_TREE; | |
4456 | } | |
df4d540f | 4457 | else |
4458 | { | |
4459 | *slot = error_mark_node; | |
4460 | htab_clear_slot (entry->decls, slot); | |
4461 | continue; | |
4462 | } | |
4463 | *slot = decl; | |
4464 | } | |
4465 | decl = (tree) *slot; | |
4466 | if (rent->local_name[0]) | |
4467 | local_name = get_identifier (rent->local_name); | |
4468 | else | |
4469 | local_name = NULL_TREE; | |
51d9479b | 4470 | gfc_set_backend_locus (&rent->where); |
df4d540f | 4471 | (*debug_hooks->imported_module_or_decl) (decl, local_name, |
4472 | ns->proc_name->backend_decl, | |
4473 | !use_stmt->only_flag); | |
4474 | } | |
4475 | } | |
4ee9c684 | 4476 | } |
4477 | ||
51d9479b | 4478 | |
2eb674c9 | 4479 | /* Return true if expr is a constant initializer that gfc_conv_initializer |
4480 | will handle. */ | |
4481 | ||
4482 | static bool | |
4483 | check_constant_initializer (gfc_expr *expr, gfc_typespec *ts, bool array, | |
4484 | bool pointer) | |
4485 | { | |
4486 | gfc_constructor *c; | |
4487 | gfc_component *cm; | |
4488 | ||
4489 | if (pointer) | |
4490 | return true; | |
4491 | else if (array) | |
4492 | { | |
4493 | if (expr->expr_type == EXPR_CONSTANT || expr->expr_type == EXPR_NULL) | |
4494 | return true; | |
4495 | else if (expr->expr_type == EXPR_STRUCTURE) | |
4496 | return check_constant_initializer (expr, ts, false, false); | |
4497 | else if (expr->expr_type != EXPR_ARRAY) | |
4498 | return false; | |
126387b5 | 4499 | for (c = gfc_constructor_first (expr->value.constructor); |
4500 | c; c = gfc_constructor_next (c)) | |
2eb674c9 | 4501 | { |
4502 | if (c->iterator) | |
4503 | return false; | |
4504 | if (c->expr->expr_type == EXPR_STRUCTURE) | |
4505 | { | |
4506 | if (!check_constant_initializer (c->expr, ts, false, false)) | |
4507 | return false; | |
4508 | } | |
4509 | else if (c->expr->expr_type != EXPR_CONSTANT) | |
4510 | return false; | |
4511 | } | |
4512 | return true; | |
4513 | } | |
4514 | else switch (ts->type) | |
4515 | { | |
4516 | case BT_DERIVED: | |
4517 | if (expr->expr_type != EXPR_STRUCTURE) | |
4518 | return false; | |
eeebe20b | 4519 | cm = expr->ts.u.derived->components; |
126387b5 | 4520 | for (c = gfc_constructor_first (expr->value.constructor); |
4521 | c; c = gfc_constructor_next (c), cm = cm->next) | |
2eb674c9 | 4522 | { |
4523 | if (!c->expr || cm->attr.allocatable) | |
4524 | continue; | |
4525 | if (!check_constant_initializer (c->expr, &cm->ts, | |
4526 | cm->attr.dimension, | |
4527 | cm->attr.pointer)) | |
4528 | return false; | |
4529 | } | |
4530 | return true; | |
4531 | default: | |
4532 | return expr->expr_type == EXPR_CONSTANT; | |
4533 | } | |
4534 | } | |
4535 | ||
4536 | /* Emit debug info for parameters and unreferenced variables with | |
4537 | initializers. */ | |
4538 | ||
4539 | static void | |
4540 | gfc_emit_parameter_debug_info (gfc_symbol *sym) | |
4541 | { | |
4542 | tree decl; | |
4543 | ||
4544 | if (sym->attr.flavor != FL_PARAMETER | |
4545 | && (sym->attr.flavor != FL_VARIABLE || sym->attr.referenced)) | |
4546 | return; | |
4547 | ||
4548 | if (sym->backend_decl != NULL | |
4549 | || sym->value == NULL | |
4550 | || sym->attr.use_assoc | |
4551 | || sym->attr.dummy | |
4552 | || sym->attr.result | |
4553 | || sym->attr.function | |
4554 | || sym->attr.intrinsic | |
4555 | || sym->attr.pointer | |
4556 | || sym->attr.allocatable | |
4557 | || sym->attr.cray_pointee | |
4558 | || sym->attr.threadprivate | |
4559 | || sym->attr.is_bind_c | |
4560 | || sym->attr.subref_array_pointer | |
4561 | || sym->attr.assign) | |
4562 | return; | |
4563 | ||
4564 | if (sym->ts.type == BT_CHARACTER) | |
4565 | { | |
eeebe20b | 4566 | gfc_conv_const_charlen (sym->ts.u.cl); |
4567 | if (sym->ts.u.cl->backend_decl == NULL | |
4568 | || TREE_CODE (sym->ts.u.cl->backend_decl) != INTEGER_CST) | |
2eb674c9 | 4569 | return; |
4570 | } | |
eeebe20b | 4571 | else if (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
2eb674c9 | 4572 | return; |
4573 | ||
4574 | if (sym->as) | |
4575 | { | |
4576 | int n; | |
4577 | ||
4578 | if (sym->as->type != AS_EXPLICIT) | |
4579 | return; | |
4580 | for (n = 0; n < sym->as->rank; n++) | |
4581 | if (sym->as->lower[n]->expr_type != EXPR_CONSTANT | |
4582 | || sym->as->upper[n] == NULL | |
4583 | || sym->as->upper[n]->expr_type != EXPR_CONSTANT) | |
4584 | return; | |
4585 | } | |
4586 | ||
4587 | if (!check_constant_initializer (sym->value, &sym->ts, | |
4588 | sym->attr.dimension, false)) | |
4589 | return; | |
4590 | ||
a961ca30 | 4591 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && sym->attr.codimension) |
4592 | return; | |
4593 | ||
2eb674c9 | 4594 | /* Create the decl for the variable or constant. */ |
e60a6f7b | 4595 | decl = build_decl (input_location, |
4596 | sym->attr.flavor == FL_PARAMETER ? CONST_DECL : VAR_DECL, | |
2eb674c9 | 4597 | gfc_sym_identifier (sym), gfc_sym_type (sym)); |
4598 | if (sym->attr.flavor == FL_PARAMETER) | |
4599 | TREE_READONLY (decl) = 1; | |
4600 | gfc_set_decl_location (decl, &sym->declared_at); | |
4601 | if (sym->attr.dimension) | |
4602 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
4603 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4604 | TREE_STATIC (decl) = 1; | |
4605 | TREE_USED (decl) = 1; | |
4606 | if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
4607 | TREE_PUBLIC (decl) = 1; | |
802532b9 | 4608 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
4609 | TREE_TYPE (decl), | |
4610 | sym->attr.dimension, | |
4611 | false, false); | |
2eb674c9 | 4612 | debug_hooks->global_decl (decl); |
4613 | } | |
4614 | ||
a961ca30 | 4615 | |
4616 | static void | |
4617 | generate_coarray_sym_init (gfc_symbol *sym) | |
4618 | { | |
4619 | tree tmp, size, decl, token; | |
4620 | ||
4621 | if (sym->attr.dummy || sym->attr.allocatable || !sym->attr.codimension | |
a90fe829 | 4622 | || sym->attr.use_assoc || !sym->attr.referenced) |
a961ca30 | 4623 | return; |
4624 | ||
4625 | decl = sym->backend_decl; | |
4626 | TREE_USED(decl) = 1; | |
4627 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (decl))); | |
4628 | ||
4629 | /* FIXME: Workaround for PR middle-end/49106, cf. also PR middle-end/49108 | |
4630 | to make sure the variable is not optimized away. */ | |
4631 | DECL_PRESERVE_P (DECL_CONTEXT (decl)) = 1; | |
4632 | ||
4633 | size = TYPE_SIZE_UNIT (gfc_get_element_type (TREE_TYPE (decl))); | |
4634 | ||
a90fe829 | 4635 | /* Ensure that we do not have size=0 for zero-sized arrays. */ |
ee4e7a5e | 4636 | size = fold_build2_loc (input_location, MAX_EXPR, size_type_node, |
4637 | fold_convert (size_type_node, size), | |
4638 | build_int_cst (size_type_node, 1)); | |
4639 | ||
a961ca30 | 4640 | if (GFC_TYPE_ARRAY_RANK (TREE_TYPE (decl))) |
4641 | { | |
4642 | tmp = GFC_TYPE_ARRAY_SIZE (TREE_TYPE (decl)); | |
4643 | size = fold_build2_loc (input_location, MULT_EXPR, size_type_node, | |
ee4e7a5e | 4644 | fold_convert (size_type_node, tmp), size); |
a961ca30 | 4645 | } |
4646 | ||
4647 | gcc_assert (GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE (decl)) != NULL_TREE); | |
4648 | token = gfc_build_addr_expr (ppvoid_type_node, | |
4649 | GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE(decl))); | |
4650 | ||
4651 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_register, 6, size, | |
7b186db6 | 4652 | build_int_cst (integer_type_node, |
4f5fe475 | 4653 | GFC_CAF_COARRAY_STATIC), /* type. */ |
a961ca30 | 4654 | token, null_pointer_node, /* token, stat. */ |
4655 | null_pointer_node, /* errgmsg, errmsg_len. */ | |
4656 | build_int_cst (integer_type_node, 0)); | |
a90fe829 | 4657 | |
a961ca30 | 4658 | gfc_add_modify (&caf_init_block, decl, fold_convert (TREE_TYPE (decl), tmp)); |
4659 | ||
4660 | ||
4661 | /* Handle "static" initializer. */ | |
4662 | if (sym->value) | |
4663 | { | |
4664 | sym->attr.pointer = 1; | |
4665 | tmp = gfc_trans_assignment (gfc_lval_expr_from_sym (sym), sym->value, | |
4666 | true, false); | |
4667 | sym->attr.pointer = 0; | |
4668 | gfc_add_expr_to_block (&caf_init_block, tmp); | |
4669 | } | |
4670 | } | |
4671 | ||
4672 | ||
4673 | /* Generate constructor function to initialize static, nonallocatable | |
4674 | coarrays. */ | |
4675 | ||
4676 | static void | |
4677 | generate_coarray_init (gfc_namespace * ns __attribute((unused))) | |
4678 | { | |
4679 | tree fndecl, tmp, decl, save_fn_decl; | |
4680 | ||
4681 | save_fn_decl = current_function_decl; | |
4682 | push_function_context (); | |
4683 | ||
4684 | tmp = build_function_type_list (void_type_node, NULL_TREE); | |
4685 | fndecl = build_decl (input_location, FUNCTION_DECL, | |
4686 | create_tmp_var_name ("_caf_init"), tmp); | |
4687 | ||
4688 | DECL_STATIC_CONSTRUCTOR (fndecl) = 1; | |
4689 | SET_DECL_INIT_PRIORITY (fndecl, DEFAULT_INIT_PRIORITY); | |
4690 | ||
4691 | decl = build_decl (input_location, RESULT_DECL, NULL_TREE, void_type_node); | |
4692 | DECL_ARTIFICIAL (decl) = 1; | |
4693 | DECL_IGNORED_P (decl) = 1; | |
4694 | DECL_CONTEXT (decl) = fndecl; | |
4695 | DECL_RESULT (fndecl) = decl; | |
4696 | ||
4697 | pushdecl (fndecl); | |
4698 | current_function_decl = fndecl; | |
4699 | announce_function (fndecl); | |
4700 | ||
4701 | rest_of_decl_compilation (fndecl, 0, 0); | |
4702 | make_decl_rtl (fndecl); | |
00cf115c | 4703 | allocate_struct_function (fndecl, false); |
a961ca30 | 4704 | |
cde2be84 | 4705 | pushlevel (); |
a961ca30 | 4706 | gfc_init_block (&caf_init_block); |
4707 | ||
4708 | gfc_traverse_ns (ns, generate_coarray_sym_init); | |
4709 | ||
4710 | DECL_SAVED_TREE (fndecl) = gfc_finish_block (&caf_init_block); | |
4711 | decl = getdecls (); | |
4712 | ||
cde2be84 | 4713 | poplevel (1, 1); |
a961ca30 | 4714 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; |
4715 | ||
4716 | DECL_SAVED_TREE (fndecl) | |
4717 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
4718 | DECL_INITIAL (fndecl)); | |
4719 | dump_function (TDI_original, fndecl); | |
4720 | ||
4721 | cfun->function_end_locus = input_location; | |
4722 | set_cfun (NULL); | |
4723 | ||
4724 | if (decl_function_context (fndecl)) | |
4725 | (void) cgraph_create_node (fndecl); | |
4726 | else | |
4727 | cgraph_finalize_function (fndecl, true); | |
4728 | ||
4729 | pop_function_context (); | |
4730 | current_function_decl = save_fn_decl; | |
4731 | } | |
4732 | ||
4733 | ||
c40a5c1b | 4734 | static void |
4735 | create_module_nml_decl (gfc_symbol *sym) | |
4736 | { | |
4737 | if (sym->attr.flavor == FL_NAMELIST) | |
4738 | { | |
4739 | tree decl = generate_namelist_decl (sym); | |
4740 | pushdecl (decl); | |
4741 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
4742 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4743 | rest_of_decl_compilation (decl, 1, 0); | |
4744 | gfc_module_add_decl (cur_module, decl); | |
4745 | } | |
4746 | } | |
4747 | ||
4748 | ||
51d9479b | 4749 | /* Generate all the required code for module variables. */ |
4750 | ||
4751 | void | |
4752 | gfc_generate_module_vars (gfc_namespace * ns) | |
4753 | { | |
4754 | module_namespace = ns; | |
4755 | cur_module = gfc_find_module (ns->proc_name->name); | |
4756 | ||
4757 | /* Check if the frontend left the namespace in a reasonable state. */ | |
4758 | gcc_assert (ns->proc_name && !ns->proc_name->tlink); | |
4759 | ||
4760 | /* Generate COMMON blocks. */ | |
4761 | gfc_trans_common (ns); | |
4762 | ||
a961ca30 | 4763 | has_coarray_vars = false; |
4764 | ||
51d9479b | 4765 | /* Create decls for all the module variables. */ |
4766 | gfc_traverse_ns (ns, gfc_create_module_variable); | |
c40a5c1b | 4767 | gfc_traverse_ns (ns, create_module_nml_decl); |
51d9479b | 4768 | |
a961ca30 | 4769 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
4770 | generate_coarray_init (ns); | |
4771 | ||
51d9479b | 4772 | cur_module = NULL; |
4773 | ||
4774 | gfc_trans_use_stmts (ns); | |
2eb674c9 | 4775 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
51d9479b | 4776 | } |
4777 | ||
4778 | ||
4ee9c684 | 4779 | static void |
4780 | gfc_generate_contained_functions (gfc_namespace * parent) | |
4781 | { | |
4782 | gfc_namespace *ns; | |
4783 | ||
4784 | /* We create all the prototypes before generating any code. */ | |
4785 | for (ns = parent->contained; ns; ns = ns->sibling) | |
4786 | { | |
4787 | /* Skip namespaces from used modules. */ | |
4788 | if (ns->parent != parent) | |
4789 | continue; | |
4790 | ||
d896f9b3 | 4791 | gfc_create_function_decl (ns, false); |
4ee9c684 | 4792 | } |
4793 | ||
4794 | for (ns = parent->contained; ns; ns = ns->sibling) | |
4795 | { | |
4796 | /* Skip namespaces from used modules. */ | |
4797 | if (ns->parent != parent) | |
4798 | continue; | |
4799 | ||
4800 | gfc_generate_function_code (ns); | |
4801 | } | |
4802 | } | |
4803 | ||
4804 | ||
d95efb59 | 4805 | /* Drill down through expressions for the array specification bounds and |
4806 | character length calling generate_local_decl for all those variables | |
4807 | that have not already been declared. */ | |
4808 | ||
4809 | static void | |
4810 | generate_local_decl (gfc_symbol *); | |
4811 | ||
1acb400a | 4812 | /* Traverse expr, marking all EXPR_VARIABLE symbols referenced. */ |
d95efb59 | 4813 | |
1acb400a | 4814 | static bool |
4815 | expr_decls (gfc_expr *e, gfc_symbol *sym, | |
4816 | int *f ATTRIBUTE_UNUSED) | |
4817 | { | |
4818 | if (e->expr_type != EXPR_VARIABLE | |
4819 | || sym == e->symtree->n.sym | |
d95efb59 | 4820 | || e->symtree->n.sym->mark |
4821 | || e->symtree->n.sym->ns != sym->ns) | |
1acb400a | 4822 | return false; |
d95efb59 | 4823 | |
1acb400a | 4824 | generate_local_decl (e->symtree->n.sym); |
4825 | return false; | |
4826 | } | |
d95efb59 | 4827 | |
1acb400a | 4828 | static void |
4829 | generate_expr_decls (gfc_symbol *sym, gfc_expr *e) | |
4830 | { | |
4831 | gfc_traverse_expr (e, sym, expr_decls, 0); | |
d95efb59 | 4832 | } |
4833 | ||
4834 | ||
f6d0e37a | 4835 | /* Check for dependencies in the character length and array spec. */ |
d95efb59 | 4836 | |
4837 | static void | |
4838 | generate_dependency_declarations (gfc_symbol *sym) | |
4839 | { | |
4840 | int i; | |
4841 | ||
4842 | if (sym->ts.type == BT_CHARACTER | |
eeebe20b | 4843 | && sym->ts.u.cl |
4844 | && sym->ts.u.cl->length | |
4845 | && sym->ts.u.cl->length->expr_type != EXPR_CONSTANT) | |
4846 | generate_expr_decls (sym, sym->ts.u.cl->length); | |
d95efb59 | 4847 | |
4848 | if (sym->as && sym->as->rank) | |
4849 | { | |
4850 | for (i = 0; i < sym->as->rank; i++) | |
4851 | { | |
4852 | generate_expr_decls (sym, sym->as->lower[i]); | |
4853 | generate_expr_decls (sym, sym->as->upper[i]); | |
4854 | } | |
4855 | } | |
4856 | } | |
4857 | ||
4858 | ||
4ee9c684 | 4859 | /* Generate decls for all local variables. We do this to ensure correct |
4860 | handling of expressions which only appear in the specification of | |
4861 | other functions. */ | |
4862 | ||
4863 | static void | |
4864 | generate_local_decl (gfc_symbol * sym) | |
4865 | { | |
4866 | if (sym->attr.flavor == FL_VARIABLE) | |
4867 | { | |
a961ca30 | 4868 | if (sym->attr.codimension && !sym->attr.dummy && !sym->attr.allocatable |
4869 | && sym->attr.referenced && !sym->attr.use_assoc) | |
4870 | has_coarray_vars = true; | |
4871 | ||
d95efb59 | 4872 | if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master) |
8714fc76 | 4873 | generate_dependency_declarations (sym); |
d95efb59 | 4874 | |
4ee9c684 | 4875 | if (sym->attr.referenced) |
8714fc76 | 4876 | gfc_get_symbol_decl (sym); |
4acad347 | 4877 | |
4878 | /* Warnings for unused dummy arguments. */ | |
6992b8c8 | 4879 | else if (sym->attr.dummy && !sym->attr.in_namelist) |
7c0ca46e | 4880 | { |
4acad347 | 4881 | /* INTENT(out) dummy arguments are likely meant to be set. */ |
4882 | if (gfc_option.warn_unused_dummy_argument | |
4883 | && sym->attr.intent == INTENT_OUT) | |
4884 | { | |
4885 | if (sym->ts.type != BT_DERIVED) | |
4886 | gfc_warning ("Dummy argument '%s' at %L was declared " | |
4887 | "INTENT(OUT) but was not set", sym->name, | |
4888 | &sym->declared_at); | |
48cb4748 | 4889 | else if (!gfc_has_default_initializer (sym->ts.u.derived) |
4890 | && !sym->ts.u.derived->attr.zero_comp) | |
4acad347 | 4891 | gfc_warning ("Derived-type dummy argument '%s' at %L was " |
4892 | "declared INTENT(OUT) but was not set and " | |
4893 | "does not have a default initializer", | |
4894 | sym->name, &sym->declared_at); | |
90a4a5a6 | 4895 | if (sym->backend_decl != NULL_TREE) |
4896 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4acad347 | 4897 | } |
4898 | else if (gfc_option.warn_unused_dummy_argument) | |
90a4a5a6 | 4899 | { |
4900 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, | |
4acad347 | 4901 | &sym->declared_at); |
90a4a5a6 | 4902 | if (sym->backend_decl != NULL_TREE) |
4903 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4904 | } | |
7c0ca46e | 4905 | } |
4acad347 | 4906 | |
f888a3fb | 4907 | /* Warn for unused variables, but not if they're inside a common |
1dbfac29 | 4908 | block or a namelist. */ |
36609028 | 4909 | else if (warn_unused_variable |
1dbfac29 | 4910 | && !(sym->attr.in_common || sym->mark || sym->attr.in_namelist)) |
90a4a5a6 | 4911 | { |
1dbfac29 | 4912 | if (sym->attr.use_only) |
4913 | { | |
4914 | gfc_warning ("Unused module variable '%s' which has been " | |
4915 | "explicitly imported at %L", sym->name, | |
4916 | &sym->declared_at); | |
4917 | if (sym->backend_decl != NULL_TREE) | |
4918 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4919 | } | |
4920 | else if (!sym->attr.use_assoc) | |
4921 | { | |
4922 | gfc_warning ("Unused variable '%s' declared at %L", | |
4923 | sym->name, &sym->declared_at); | |
4924 | if (sym->backend_decl != NULL_TREE) | |
4925 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4926 | } | |
90a4a5a6 | 4927 | } |
8714fc76 | 4928 | |
d4163395 | 4929 | /* For variable length CHARACTER parameters, the PARM_DECL already |
4930 | references the length variable, so force gfc_get_symbol_decl | |
4931 | even when not referenced. If optimize > 0, it will be optimized | |
4932 | away anyway. But do this only after emitting -Wunused-parameter | |
4933 | warning if requested. */ | |
8714fc76 | 4934 | if (sym->attr.dummy && !sym->attr.referenced |
4935 | && sym->ts.type == BT_CHARACTER | |
eeebe20b | 4936 | && sym->ts.u.cl->backend_decl != NULL |
4937 | && TREE_CODE (sym->ts.u.cl->backend_decl) == VAR_DECL) | |
d4163395 | 4938 | { |
4939 | sym->attr.referenced = 1; | |
4940 | gfc_get_symbol_decl (sym); | |
4941 | } | |
76776e6d | 4942 | |
d0163401 | 4943 | /* INTENT(out) dummy arguments and result variables with allocatable |
4944 | components are reset by default and need to be set referenced to | |
4945 | generate the code for nullification and automatic lengths. */ | |
4946 | if (!sym->attr.referenced | |
8714fc76 | 4947 | && sym->ts.type == BT_DERIVED |
eeebe20b | 4948 | && sym->ts.u.derived->attr.alloc_comp |
c49db15e | 4949 | && !sym->attr.pointer |
d0163401 | 4950 | && ((sym->attr.dummy && sym->attr.intent == INTENT_OUT) |
4951 | || | |
4952 | (sym->attr.result && sym != sym->result))) | |
8714fc76 | 4953 | { |
4954 | sym->attr.referenced = 1; | |
4955 | gfc_get_symbol_decl (sym); | |
4956 | } | |
4957 | ||
e72f979a | 4958 | /* Check for dependencies in the array specification and string |
4959 | length, adding the necessary declarations to the function. We | |
4960 | mark the symbol now, as well as in traverse_ns, to prevent | |
4961 | getting stuck in a circular dependency. */ | |
4962 | sym->mark = 1; | |
4ee9c684 | 4963 | } |
5dd246c1 | 4964 | else if (sym->attr.flavor == FL_PARAMETER) |
4965 | { | |
6ecfe89d | 4966 | if (warn_unused_parameter |
f326eb81 | 4967 | && !sym->attr.referenced) |
4968 | { | |
4969 | if (!sym->attr.use_assoc) | |
4970 | gfc_warning ("Unused parameter '%s' declared at %L", sym->name, | |
4971 | &sym->declared_at); | |
4972 | else if (sym->attr.use_only) | |
4973 | gfc_warning ("Unused parameter '%s' which has been explicitly " | |
4974 | "imported at %L", sym->name, &sym->declared_at); | |
4975 | } | |
5dd246c1 | 4976 | } |
fa7b6574 | 4977 | else if (sym->attr.flavor == FL_PROCEDURE) |
4978 | { | |
4979 | /* TODO: move to the appropriate place in resolve.c. */ | |
4980 | if (warn_return_type | |
4981 | && sym->attr.function | |
4982 | && sym->result | |
4983 | && sym != sym->result | |
4984 | && !sym->result->attr.referenced | |
4985 | && !sym->attr.use_assoc | |
4986 | && sym->attr.if_source != IFSRC_IFBODY) | |
4987 | { | |
4988 | gfc_warning ("Return value '%s' of function '%s' declared at " | |
4989 | "%L not set", sym->result->name, sym->name, | |
4990 | &sym->result->declared_at); | |
4991 | ||
4992 | /* Prevents "Unused variable" warning for RESULT variables. */ | |
e72f979a | 4993 | sym->result->mark = 1; |
fa7b6574 | 4994 | } |
4995 | } | |
c5d33754 | 4996 | |
19ba2ad8 | 4997 | if (sym->attr.dummy == 1) |
4998 | { | |
4999 | /* Modify the tree type for scalar character dummy arguments of bind(c) | |
5000 | procedures if they are passed by value. The tree type for them will | |
5001 | be promoted to INTEGER_TYPE for the middle end, which appears to be | |
5002 | what C would do with characters passed by-value. The value attribute | |
5003 | implies the dummy is a scalar. */ | |
5004 | if (sym->attr.value == 1 && sym->backend_decl != NULL | |
5005 | && sym->ts.type == BT_CHARACTER && sym->ts.is_c_interop | |
5006 | && sym->ns->proc_name != NULL && sym->ns->proc_name->attr.is_bind_c) | |
4c47c8b7 | 5007 | gfc_conv_scalar_char_value (sym, NULL, NULL); |
fc6338c7 | 5008 | |
5009 | /* Unused procedure passed as dummy argument. */ | |
5010 | if (sym->attr.flavor == FL_PROCEDURE) | |
5011 | { | |
5012 | if (!sym->attr.referenced) | |
5013 | { | |
5014 | if (gfc_option.warn_unused_dummy_argument) | |
5015 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, | |
a90fe829 | 5016 | &sym->declared_at); |
fc6338c7 | 5017 | } |
5018 | ||
5019 | /* Silence bogus "unused parameter" warnings from the | |
5020 | middle end. */ | |
5021 | if (sym->backend_decl != NULL_TREE) | |
5022 | TREE_NO_WARNING (sym->backend_decl) = 1; | |
5023 | } | |
19ba2ad8 | 5024 | } |
5025 | ||
c5d33754 | 5026 | /* Make sure we convert the types of the derived types from iso_c_binding |
5027 | into (void *). */ | |
5028 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
5029 | && sym->ts.type == BT_DERIVED) | |
5030 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
4ee9c684 | 5031 | } |
5032 | ||
c40a5c1b | 5033 | |
5034 | static void | |
5035 | generate_local_nml_decl (gfc_symbol * sym) | |
5036 | { | |
5037 | if (sym->attr.flavor == FL_NAMELIST && !sym->attr.use_assoc) | |
5038 | { | |
5039 | tree decl = generate_namelist_decl (sym); | |
5040 | pushdecl (decl); | |
5041 | } | |
5042 | } | |
5043 | ||
5044 | ||
4ee9c684 | 5045 | static void |
5046 | generate_local_vars (gfc_namespace * ns) | |
5047 | { | |
5048 | gfc_traverse_ns (ns, generate_local_decl); | |
c40a5c1b | 5049 | gfc_traverse_ns (ns, generate_local_nml_decl); |
4ee9c684 | 5050 | } |
5051 | ||
5052 | ||
1b716045 | 5053 | /* Generate a switch statement to jump to the correct entry point. Also |
5054 | creates the label decls for the entry points. */ | |
4ee9c684 | 5055 | |
1b716045 | 5056 | static tree |
5057 | gfc_trans_entry_master_switch (gfc_entry_list * el) | |
4ee9c684 | 5058 | { |
1b716045 | 5059 | stmtblock_t block; |
5060 | tree label; | |
5061 | tree tmp; | |
5062 | tree val; | |
4ee9c684 | 5063 | |
1b716045 | 5064 | gfc_init_block (&block); |
5065 | for (; el; el = el->next) | |
5066 | { | |
5067 | /* Add the case label. */ | |
b797d6d3 | 5068 | label = gfc_build_label_decl (NULL_TREE); |
7016c612 | 5069 | val = build_int_cst (gfc_array_index_type, el->id); |
b6e3dd65 | 5070 | tmp = build_case_label (val, NULL_TREE, label); |
1b716045 | 5071 | gfc_add_expr_to_block (&block, tmp); |
5b11d932 | 5072 | |
1b716045 | 5073 | /* And jump to the actual entry point. */ |
5074 | label = gfc_build_label_decl (NULL_TREE); | |
1b716045 | 5075 | tmp = build1_v (GOTO_EXPR, label); |
5076 | gfc_add_expr_to_block (&block, tmp); | |
5077 | ||
5078 | /* Save the label decl. */ | |
5079 | el->label = label; | |
5080 | } | |
5081 | tmp = gfc_finish_block (&block); | |
5082 | /* The first argument selects the entry point. */ | |
5083 | val = DECL_ARGUMENTS (current_function_decl); | |
bfb10994 | 5084 | tmp = fold_build3_loc (input_location, SWITCH_EXPR, NULL_TREE, |
5085 | val, tmp, NULL_TREE); | |
1b716045 | 5086 | return tmp; |
4ee9c684 | 5087 | } |
5088 | ||
6374121b | 5089 | |
a4abf8a0 | 5090 | /* Add code to string lengths of actual arguments passed to a function against |
5091 | the expected lengths of the dummy arguments. */ | |
5092 | ||
5093 | static void | |
5094 | add_argument_checking (stmtblock_t *block, gfc_symbol *sym) | |
5095 | { | |
5096 | gfc_formal_arglist *formal; | |
5097 | ||
6777213b | 5098 | for (formal = gfc_sym_get_dummy_args (sym); formal; formal = formal->next) |
517c89e5 | 5099 | if (formal->sym && formal->sym->ts.type == BT_CHARACTER |
6c3000f4 | 5100 | && !formal->sym->ts.deferred) |
a4abf8a0 | 5101 | { |
5102 | enum tree_code comparison; | |
5103 | tree cond; | |
5104 | tree argname; | |
5105 | gfc_symbol *fsym; | |
5106 | gfc_charlen *cl; | |
5107 | const char *message; | |
5108 | ||
5109 | fsym = formal->sym; | |
eeebe20b | 5110 | cl = fsym->ts.u.cl; |
a4abf8a0 | 5111 | |
5112 | gcc_assert (cl); | |
5113 | gcc_assert (cl->passed_length != NULL_TREE); | |
5114 | gcc_assert (cl->backend_decl != NULL_TREE); | |
5115 | ||
5116 | /* For POINTER, ALLOCATABLE and assumed-shape dummy arguments, the | |
5117 | string lengths must match exactly. Otherwise, it is only required | |
be4be771 | 5118 | that the actual string length is *at least* the expected one. |
5119 | Sequence association allows for a mismatch of the string length | |
5120 | if the actual argument is (part of) an array, but only if the | |
5121 | dummy argument is an array. (See "Sequence association" in | |
5122 | Section 12.4.1.4 for F95 and 12.4.1.5 for F2003.) */ | |
517c89e5 | 5123 | if (fsym->attr.pointer || fsym->attr.allocatable |
f00f6dd6 | 5124 | || (fsym->as && (fsym->as->type == AS_ASSUMED_SHAPE |
5125 | || fsym->as->type == AS_ASSUMED_RANK))) | |
a4abf8a0 | 5126 | { |
5127 | comparison = NE_EXPR; | |
5128 | message = _("Actual string length does not match the declared one" | |
5129 | " for dummy argument '%s' (%ld/%ld)"); | |
5130 | } | |
be4be771 | 5131 | else if (fsym->as && fsym->as->rank != 0) |
5132 | continue; | |
a4abf8a0 | 5133 | else |
5134 | { | |
5135 | comparison = LT_EXPR; | |
5136 | message = _("Actual string length is shorter than the declared one" | |
5137 | " for dummy argument '%s' (%ld/%ld)"); | |
5138 | } | |
5139 | ||
5140 | /* Build the condition. For optional arguments, an actual length | |
5141 | of 0 is also acceptable if the associated string is NULL, which | |
5142 | means the argument was not passed. */ | |
fd779e1d | 5143 | cond = fold_build2_loc (input_location, comparison, boolean_type_node, |
5144 | cl->passed_length, cl->backend_decl); | |
a4abf8a0 | 5145 | if (fsym->attr.optional) |
5146 | { | |
5147 | tree not_absent; | |
5148 | tree not_0length; | |
5149 | tree absent_failed; | |
5150 | ||
fd779e1d | 5151 | not_0length = fold_build2_loc (input_location, NE_EXPR, |
5152 | boolean_type_node, | |
5153 | cl->passed_length, | |
385f3f36 | 5154 | build_zero_cst (gfc_charlen_type_node)); |
5fa0fdc2 | 5155 | /* The symbol needs to be referenced for gfc_get_symbol_decl. */ |
5156 | fsym->attr.referenced = 1; | |
5157 | not_absent = gfc_conv_expr_present (fsym); | |
a4abf8a0 | 5158 | |
fd779e1d | 5159 | absent_failed = fold_build2_loc (input_location, TRUTH_OR_EXPR, |
5160 | boolean_type_node, not_0length, | |
5161 | not_absent); | |
a4abf8a0 | 5162 | |
fd779e1d | 5163 | cond = fold_build2_loc (input_location, TRUTH_AND_EXPR, |
5164 | boolean_type_node, cond, absent_failed); | |
a4abf8a0 | 5165 | } |
5166 | ||
5167 | /* Build the runtime check. */ | |
5168 | argname = gfc_build_cstring_const (fsym->name); | |
5169 | argname = gfc_build_addr_expr (pchar_type_node, argname); | |
5170 | gfc_trans_runtime_check (true, false, cond, block, &fsym->declared_at, | |
5171 | message, argname, | |
5172 | fold_convert (long_integer_type_node, | |
5173 | cl->passed_length), | |
5174 | fold_convert (long_integer_type_node, | |
5175 | cl->backend_decl)); | |
5176 | } | |
5177 | } | |
5178 | ||
5179 | ||
7257a5d2 | 5180 | static void |
5181 | create_main_function (tree fndecl) | |
5182 | { | |
43702da6 | 5183 | tree old_context; |
7257a5d2 | 5184 | tree ftn_main; |
5185 | tree tmp, decl, result_decl, argc, argv, typelist, arglist; | |
5186 | stmtblock_t body; | |
5187 | ||
43702da6 | 5188 | old_context = current_function_decl; |
5189 | ||
5190 | if (old_context) | |
5191 | { | |
5192 | push_function_context (); | |
5193 | saved_parent_function_decls = saved_function_decls; | |
5194 | saved_function_decls = NULL_TREE; | |
5195 | } | |
5196 | ||
7257a5d2 | 5197 | /* main() function must be declared with global scope. */ |
5198 | gcc_assert (current_function_decl == NULL_TREE); | |
5199 | ||
5200 | /* Declare the function. */ | |
5201 | tmp = build_function_type_list (integer_type_node, integer_type_node, | |
5202 | build_pointer_type (pchar_type_node), | |
5203 | NULL_TREE); | |
0509d0ee | 5204 | main_identifier_node = get_identifier ("main"); |
e60a6f7b | 5205 | ftn_main = build_decl (input_location, FUNCTION_DECL, |
5206 | main_identifier_node, tmp); | |
7257a5d2 | 5207 | DECL_EXTERNAL (ftn_main) = 0; |
5208 | TREE_PUBLIC (ftn_main) = 1; | |
5209 | TREE_STATIC (ftn_main) = 1; | |
5210 | DECL_ATTRIBUTES (ftn_main) | |
5211 | = tree_cons (get_identifier("externally_visible"), NULL_TREE, NULL_TREE); | |
5212 | ||
5213 | /* Setup the result declaration (for "return 0"). */ | |
e60a6f7b | 5214 | result_decl = build_decl (input_location, |
5215 | RESULT_DECL, NULL_TREE, integer_type_node); | |
7257a5d2 | 5216 | DECL_ARTIFICIAL (result_decl) = 1; |
5217 | DECL_IGNORED_P (result_decl) = 1; | |
5218 | DECL_CONTEXT (result_decl) = ftn_main; | |
5219 | DECL_RESULT (ftn_main) = result_decl; | |
5220 | ||
5221 | pushdecl (ftn_main); | |
5222 | ||
5223 | /* Get the arguments. */ | |
5224 | ||
5225 | arglist = NULL_TREE; | |
5226 | typelist = TYPE_ARG_TYPES (TREE_TYPE (ftn_main)); | |
5227 | ||
5228 | tmp = TREE_VALUE (typelist); | |
e60a6f7b | 5229 | argc = build_decl (input_location, PARM_DECL, get_identifier ("argc"), tmp); |
7257a5d2 | 5230 | DECL_CONTEXT (argc) = ftn_main; |
5231 | DECL_ARG_TYPE (argc) = TREE_VALUE (typelist); | |
5232 | TREE_READONLY (argc) = 1; | |
5233 | gfc_finish_decl (argc); | |
5234 | arglist = chainon (arglist, argc); | |
5235 | ||
5236 | typelist = TREE_CHAIN (typelist); | |
5237 | tmp = TREE_VALUE (typelist); | |
e60a6f7b | 5238 | argv = build_decl (input_location, PARM_DECL, get_identifier ("argv"), tmp); |
7257a5d2 | 5239 | DECL_CONTEXT (argv) = ftn_main; |
5240 | DECL_ARG_TYPE (argv) = TREE_VALUE (typelist); | |
5241 | TREE_READONLY (argv) = 1; | |
5242 | DECL_BY_REFERENCE (argv) = 1; | |
5243 | gfc_finish_decl (argv); | |
5244 | arglist = chainon (arglist, argv); | |
5245 | ||
5246 | DECL_ARGUMENTS (ftn_main) = arglist; | |
5247 | current_function_decl = ftn_main; | |
5248 | announce_function (ftn_main); | |
5249 | ||
5250 | rest_of_decl_compilation (ftn_main, 1, 0); | |
5251 | make_decl_rtl (ftn_main); | |
00cf115c | 5252 | allocate_struct_function (ftn_main, false); |
cde2be84 | 5253 | pushlevel (); |
7257a5d2 | 5254 | |
5255 | gfc_init_block (&body); | |
5256 | ||
5257 | /* Call some libgfortran initialization routines, call then MAIN__(). */ | |
5258 | ||
d44f2f7c | 5259 | /* Call _gfortran_caf_init (*argc, ***argv). */ |
70b5944a | 5260 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) |
5261 | { | |
5262 | tree pint_type, pppchar_type; | |
5263 | pint_type = build_pointer_type (integer_type_node); | |
5264 | pppchar_type | |
5265 | = build_pointer_type (build_pointer_type (pchar_type_node)); | |
5266 | ||
d44f2f7c | 5267 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_init, 2, |
70b5944a | 5268 | gfc_build_addr_expr (pint_type, argc), |
d44f2f7c | 5269 | gfc_build_addr_expr (pppchar_type, argv)); |
70b5944a | 5270 | gfc_add_expr_to_block (&body, tmp); |
5271 | } | |
5272 | ||
7257a5d2 | 5273 | /* Call _gfortran_set_args (argc, argv). */ |
43702da6 | 5274 | TREE_USED (argc) = 1; |
5275 | TREE_USED (argv) = 1; | |
389dd41b | 5276 | tmp = build_call_expr_loc (input_location, |
5277 | gfor_fndecl_set_args, 2, argc, argv); | |
7257a5d2 | 5278 | gfc_add_expr_to_block (&body, tmp); |
5279 | ||
5280 | /* Add a call to set_options to set up the runtime library Fortran | |
5281 | language standard parameters. */ | |
5282 | { | |
5283 | tree array_type, array, var; | |
f1f41a6c | 5284 | vec<constructor_elt, va_gc> *v = NULL; |
7257a5d2 | 5285 | |
5286 | /* Passing a new option to the library requires four modifications: | |
5287 | + add it to the tree_cons list below | |
5288 | + change the array size in the call to build_array_type | |
5289 | + change the first argument to the library call | |
5290 | gfor_fndecl_set_options | |
5291 | + modify the library (runtime/compile_options.c)! */ | |
5292 | ||
06f13dc1 | 5293 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5294 | build_int_cst (integer_type_node, | |
5295 | gfc_option.warn_std)); | |
5296 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5297 | build_int_cst (integer_type_node, | |
5298 | gfc_option.allow_std)); | |
5299 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5300 | build_int_cst (integer_type_node, pedantic)); | |
b2130263 | 5301 | /* TODO: This is the old -fdump-core option, which is unused but |
5302 | passed due to ABI compatibility; remove when bumping the | |
5303 | library ABI. */ | |
06f13dc1 | 5304 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5305 | build_int_cst (integer_type_node, | |
b2130263 | 5306 | 0)); |
06f13dc1 | 5307 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5308 | build_int_cst (integer_type_node, | |
5309 | gfc_option.flag_backtrace)); | |
5310 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5311 | build_int_cst (integer_type_node, | |
5312 | gfc_option.flag_sign_zero)); | |
5313 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5314 | build_int_cst (integer_type_node, | |
5315 | (gfc_option.rtcheck | |
5316 | & GFC_RTCHECK_BOUNDS))); | |
7f4f15dc | 5317 | /* TODO: This is the -frange-check option, which no longer affects |
5318 | library behavior; when bumping the library ABI this slot can be | |
5319 | reused for something else. As it is the last element in the | |
553e7cef | 5320 | array, we can instead leave it out altogether. */ |
5321 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
5322 | build_int_cst (integer_type_node, 0)); | |
06f13dc1 | 5323 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
5324 | build_int_cst (integer_type_node, | |
553e7cef | 5325 | gfc_option.fpe_summary)); |
7257a5d2 | 5326 | |
5327 | array_type = build_array_type (integer_type_node, | |
553e7cef | 5328 | build_index_type (size_int (8))); |
06f13dc1 | 5329 | array = build_constructor (array_type, v); |
7257a5d2 | 5330 | TREE_CONSTANT (array) = 1; |
5331 | TREE_STATIC (array) = 1; | |
5332 | ||
5333 | /* Create a static variable to hold the jump table. */ | |
5334 | var = gfc_create_var (array_type, "options"); | |
5335 | TREE_CONSTANT (var) = 1; | |
5336 | TREE_STATIC (var) = 1; | |
5337 | TREE_READONLY (var) = 1; | |
5338 | DECL_INITIAL (var) = array; | |
5339 | var = gfc_build_addr_expr (build_pointer_type (integer_type_node), var); | |
5340 | ||
389dd41b | 5341 | tmp = build_call_expr_loc (input_location, |
5342 | gfor_fndecl_set_options, 2, | |
553e7cef | 5343 | build_int_cst (integer_type_node, 9), var); |
7257a5d2 | 5344 | gfc_add_expr_to_block (&body, tmp); |
5345 | } | |
5346 | ||
5347 | /* If -ffpe-trap option was provided, add a call to set_fpe so that | |
5348 | the library will raise a FPE when needed. */ | |
5349 | if (gfc_option.fpe != 0) | |
5350 | { | |
389dd41b | 5351 | tmp = build_call_expr_loc (input_location, |
5352 | gfor_fndecl_set_fpe, 1, | |
7257a5d2 | 5353 | build_int_cst (integer_type_node, |
5354 | gfc_option.fpe)); | |
5355 | gfc_add_expr_to_block (&body, tmp); | |
5356 | } | |
5357 | ||
5358 | /* If this is the main program and an -fconvert option was provided, | |
5359 | add a call to set_convert. */ | |
5360 | ||
5361 | if (gfc_option.convert != GFC_CONVERT_NATIVE) | |
5362 | { | |
389dd41b | 5363 | tmp = build_call_expr_loc (input_location, |
5364 | gfor_fndecl_set_convert, 1, | |
7257a5d2 | 5365 | build_int_cst (integer_type_node, |
5366 | gfc_option.convert)); | |
5367 | gfc_add_expr_to_block (&body, tmp); | |
5368 | } | |
5369 | ||
5370 | /* If this is the main program and an -frecord-marker option was provided, | |
5371 | add a call to set_record_marker. */ | |
5372 | ||
5373 | if (gfc_option.record_marker != 0) | |
5374 | { | |
389dd41b | 5375 | tmp = build_call_expr_loc (input_location, |
5376 | gfor_fndecl_set_record_marker, 1, | |
7257a5d2 | 5377 | build_int_cst (integer_type_node, |
5378 | gfc_option.record_marker)); | |
5379 | gfc_add_expr_to_block (&body, tmp); | |
5380 | } | |
5381 | ||
5382 | if (gfc_option.max_subrecord_length != 0) | |
5383 | { | |
389dd41b | 5384 | tmp = build_call_expr_loc (input_location, |
5385 | gfor_fndecl_set_max_subrecord_length, 1, | |
7257a5d2 | 5386 | build_int_cst (integer_type_node, |
5387 | gfc_option.max_subrecord_length)); | |
5388 | gfc_add_expr_to_block (&body, tmp); | |
5389 | } | |
5390 | ||
5391 | /* Call MAIN__(). */ | |
389dd41b | 5392 | tmp = build_call_expr_loc (input_location, |
5393 | fndecl, 0); | |
7257a5d2 | 5394 | gfc_add_expr_to_block (&body, tmp); |
5395 | ||
43702da6 | 5396 | /* Mark MAIN__ as used. */ |
5397 | TREE_USED (fndecl) = 1; | |
5398 | ||
70b5944a | 5399 | /* Coarray: Call _gfortran_caf_finalize(void). */ |
5400 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
a90fe829 | 5401 | { |
70b5944a | 5402 | /* Per F2008, 8.5.1 END of the main program implies a |
a90fe829 | 5403 | SYNC MEMORY. */ |
b9a16870 | 5404 | tmp = builtin_decl_explicit (BUILT_IN_SYNC_SYNCHRONIZE); |
70b5944a | 5405 | tmp = build_call_expr_loc (input_location, tmp, 0); |
5406 | gfc_add_expr_to_block (&body, tmp); | |
5407 | ||
5408 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_finalize, 0); | |
5409 | gfc_add_expr_to_block (&body, tmp); | |
5410 | } | |
5411 | ||
7257a5d2 | 5412 | /* "return 0". */ |
fd779e1d | 5413 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, integer_type_node, |
5414 | DECL_RESULT (ftn_main), | |
5415 | build_int_cst (integer_type_node, 0)); | |
7257a5d2 | 5416 | tmp = build1_v (RETURN_EXPR, tmp); |
5417 | gfc_add_expr_to_block (&body, tmp); | |
5418 | ||
5419 | ||
5420 | DECL_SAVED_TREE (ftn_main) = gfc_finish_block (&body); | |
5421 | decl = getdecls (); | |
5422 | ||
5423 | /* Finish off this function and send it for code generation. */ | |
cde2be84 | 5424 | poplevel (1, 1); |
7257a5d2 | 5425 | BLOCK_SUPERCONTEXT (DECL_INITIAL (ftn_main)) = ftn_main; |
5426 | ||
5427 | DECL_SAVED_TREE (ftn_main) | |
5428 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (ftn_main), | |
5429 | DECL_INITIAL (ftn_main)); | |
5430 | ||
5431 | /* Output the GENERIC tree. */ | |
5432 | dump_function (TDI_original, ftn_main); | |
5433 | ||
bb982f66 | 5434 | cgraph_finalize_function (ftn_main, true); |
43702da6 | 5435 | |
5436 | if (old_context) | |
5437 | { | |
5438 | pop_function_context (); | |
5439 | saved_function_decls = saved_parent_function_decls; | |
5440 | } | |
5441 | current_function_decl = old_context; | |
7257a5d2 | 5442 | } |
5443 | ||
5444 | ||
89ac8ba1 | 5445 | /* Get the result expression for a procedure. */ |
5446 | ||
5447 | static tree | |
5448 | get_proc_result (gfc_symbol* sym) | |
5449 | { | |
5450 | if (sym->attr.subroutine || sym == sym->result) | |
5451 | { | |
5452 | if (current_fake_result_decl != NULL) | |
5453 | return TREE_VALUE (current_fake_result_decl); | |
5454 | ||
5455 | return NULL_TREE; | |
5456 | } | |
5457 | ||
5458 | return sym->result->backend_decl; | |
5459 | } | |
5460 | ||
5461 | ||
5462 | /* Generate an appropriate return-statement for a procedure. */ | |
5463 | ||
5464 | tree | |
5465 | gfc_generate_return (void) | |
5466 | { | |
5467 | gfc_symbol* sym; | |
5468 | tree result; | |
5469 | tree fndecl; | |
5470 | ||
5471 | sym = current_procedure_symbol; | |
5472 | fndecl = sym->backend_decl; | |
5473 | ||
5474 | if (TREE_TYPE (DECL_RESULT (fndecl)) == void_type_node) | |
5475 | result = NULL_TREE; | |
5476 | else | |
5477 | { | |
5478 | result = get_proc_result (sym); | |
5479 | ||
5480 | /* Set the return value to the dummy result variable. The | |
5481 | types may be different for scalar default REAL functions | |
5482 | with -ff2c, therefore we have to convert. */ | |
5483 | if (result != NULL_TREE) | |
5484 | { | |
5485 | result = convert (TREE_TYPE (DECL_RESULT (fndecl)), result); | |
fd779e1d | 5486 | result = fold_build2_loc (input_location, MODIFY_EXPR, |
5487 | TREE_TYPE (result), DECL_RESULT (fndecl), | |
5488 | result); | |
89ac8ba1 | 5489 | } |
5490 | } | |
5491 | ||
5492 | return build1_v (RETURN_EXPR, result); | |
5493 | } | |
5494 | ||
5495 | ||
4ee9c684 | 5496 | /* Generate code for a function. */ |
5497 | ||
5498 | void | |
5499 | gfc_generate_function_code (gfc_namespace * ns) | |
5500 | { | |
5501 | tree fndecl; | |
5502 | tree old_context; | |
5503 | tree decl; | |
5504 | tree tmp; | |
89ac8ba1 | 5505 | stmtblock_t init, cleanup; |
4ee9c684 | 5506 | stmtblock_t body; |
89ac8ba1 | 5507 | gfc_wrapped_block try_block; |
5fa0fdc2 | 5508 | tree recurcheckvar = NULL_TREE; |
4ee9c684 | 5509 | gfc_symbol *sym; |
89ac8ba1 | 5510 | gfc_symbol *previous_procedure_symbol; |
2294b616 | 5511 | int rank; |
e50e62f5 | 5512 | bool is_recursive; |
4ee9c684 | 5513 | |
5514 | sym = ns->proc_name; | |
89ac8ba1 | 5515 | previous_procedure_symbol = current_procedure_symbol; |
5516 | current_procedure_symbol = sym; | |
1b716045 | 5517 | |
4ee9c684 | 5518 | /* Check that the frontend isn't still using this. */ |
22d678e8 | 5519 | gcc_assert (sym->tlink == NULL); |
4ee9c684 | 5520 | sym->tlink = sym; |
5521 | ||
5522 | /* Create the declaration for functions with global scope. */ | |
5523 | if (!sym->backend_decl) | |
d896f9b3 | 5524 | gfc_create_function_decl (ns, false); |
4ee9c684 | 5525 | |
5526 | fndecl = sym->backend_decl; | |
5527 | old_context = current_function_decl; | |
5528 | ||
5529 | if (old_context) | |
5530 | { | |
5531 | push_function_context (); | |
5532 | saved_parent_function_decls = saved_function_decls; | |
5533 | saved_function_decls = NULL_TREE; | |
5534 | } | |
5535 | ||
1b716045 | 5536 | trans_function_start (sym); |
4ee9c684 | 5537 | |
89ac8ba1 | 5538 | gfc_init_block (&init); |
4ee9c684 | 5539 | |
c6871095 | 5540 | if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER) |
5541 | { | |
5542 | /* Copy length backend_decls to all entry point result | |
5543 | symbols. */ | |
5544 | gfc_entry_list *el; | |
5545 | tree backend_decl; | |
5546 | ||
eeebe20b | 5547 | gfc_conv_const_charlen (ns->proc_name->ts.u.cl); |
5548 | backend_decl = ns->proc_name->result->ts.u.cl->backend_decl; | |
c6871095 | 5549 | for (el = ns->entries; el; el = el->next) |
eeebe20b | 5550 | el->sym->result->ts.u.cl->backend_decl = backend_decl; |
c6871095 | 5551 | } |
5552 | ||
4ee9c684 | 5553 | /* Translate COMMON blocks. */ |
5554 | gfc_trans_common (ns); | |
5555 | ||
c750cc52 | 5556 | /* Null the parent fake result declaration if this namespace is |
5557 | a module function or an external procedures. */ | |
5558 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
5559 | || ns->parent == NULL) | |
5560 | parent_fake_result_decl = NULL_TREE; | |
5561 | ||
2b685f8e | 5562 | gfc_generate_contained_functions (ns); |
5563 | ||
9579733e | 5564 | nonlocal_dummy_decls = NULL; |
5565 | nonlocal_dummy_decl_pset = NULL; | |
5566 | ||
a961ca30 | 5567 | has_coarray_vars = false; |
4ee9c684 | 5568 | generate_local_vars (ns); |
5b11d932 | 5569 | |
a961ca30 | 5570 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
5571 | generate_coarray_init (ns); | |
5572 | ||
c750cc52 | 5573 | /* Keep the parent fake result declaration in module functions |
5574 | or external procedures. */ | |
5575 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
5576 | || ns->parent == NULL) | |
5577 | current_fake_result_decl = parent_fake_result_decl; | |
5578 | else | |
5579 | current_fake_result_decl = NULL_TREE; | |
5580 | ||
89ac8ba1 | 5581 | is_recursive = sym->attr.recursive |
5582 | || (sym->attr.entry_master | |
5583 | && sym->ns->entries->sym->attr.recursive); | |
5584 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
5585 | && !is_recursive | |
5586 | && !gfc_option.flag_recursive) | |
5587 | { | |
5588 | char * msg; | |
5589 | ||
5590 | asprintf (&msg, "Recursive call to nonrecursive procedure '%s'", | |
5591 | sym->name); | |
5592 | recurcheckvar = gfc_create_var (boolean_type_node, "is_recursive"); | |
5593 | TREE_STATIC (recurcheckvar) = 1; | |
5594 | DECL_INITIAL (recurcheckvar) = boolean_false_node; | |
5595 | gfc_add_expr_to_block (&init, recurcheckvar); | |
5596 | gfc_trans_runtime_check (true, false, recurcheckvar, &init, | |
5597 | &sym->declared_at, msg); | |
5598 | gfc_add_modify (&init, recurcheckvar, boolean_true_node); | |
434f0922 | 5599 | free (msg); |
89ac8ba1 | 5600 | } |
4ee9c684 | 5601 | |
5602 | /* Now generate the code for the body of this function. */ | |
5603 | gfc_init_block (&body); | |
5604 | ||
5605 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node | |
89ac8ba1 | 5606 | && sym->attr.subroutine) |
4ee9c684 | 5607 | { |
5608 | tree alternate_return; | |
c750cc52 | 5609 | alternate_return = gfc_get_fake_result_decl (sym, 0); |
75a70cf9 | 5610 | gfc_add_modify (&body, alternate_return, integer_zero_node); |
4ee9c684 | 5611 | } |
5612 | ||
1b716045 | 5613 | if (ns->entries) |
5614 | { | |
5615 | /* Jump to the correct entry point. */ | |
5616 | tmp = gfc_trans_entry_master_switch (ns->entries); | |
5617 | gfc_add_expr_to_block (&body, tmp); | |
5618 | } | |
5619 | ||
a4abf8a0 | 5620 | /* If bounds-checking is enabled, generate code to check passed in actual |
5621 | arguments against the expected dummy argument attributes (e.g. string | |
5622 | lengths). */ | |
c1630d65 | 5623 | if ((gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) && !sym->attr.is_bind_c) |
a4abf8a0 | 5624 | add_argument_checking (&body, sym); |
5625 | ||
4ee9c684 | 5626 | tmp = gfc_trans_code (ns->code); |
5627 | gfc_add_expr_to_block (&body, tmp); | |
5628 | ||
4ee9c684 | 5629 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node) |
5630 | { | |
89ac8ba1 | 5631 | tree result = get_proc_result (sym); |
4ee9c684 | 5632 | |
42766cb3 | 5633 | if (result != NULL_TREE && sym->attr.function && !sym->attr.pointer) |
2294b616 | 5634 | { |
deb7edfc | 5635 | if (sym->attr.allocatable && sym->attr.dimension == 0 |
5636 | && sym->result == sym) | |
5637 | gfc_add_modify (&init, result, fold_convert (TREE_TYPE (result), | |
5638 | null_pointer_node)); | |
42766cb3 | 5639 | else if (sym->ts.type == BT_CLASS |
5640 | && CLASS_DATA (sym)->attr.allocatable | |
3a19c063 | 5641 | && CLASS_DATA (sym)->attr.dimension == 0 |
5642 | && sym->result == sym) | |
42766cb3 | 5643 | { |
5644 | tmp = CLASS_DATA (sym)->backend_decl; | |
5645 | tmp = fold_build3_loc (input_location, COMPONENT_REF, | |
5646 | TREE_TYPE (tmp), result, tmp, NULL_TREE); | |
5647 | gfc_add_modify (&init, tmp, fold_convert (TREE_TYPE (tmp), | |
5648 | null_pointer_node)); | |
5649 | } | |
deb7edfc | 5650 | else if (sym->ts.type == BT_DERIVED |
42766cb3 | 5651 | && sym->ts.u.derived->attr.alloc_comp |
5652 | && !sym->attr.allocatable) | |
53169279 | 5653 | { |
5654 | rank = sym->as ? sym->as->rank : 0; | |
89ac8ba1 | 5655 | tmp = gfc_nullify_alloc_comp (sym->ts.u.derived, result, rank); |
5656 | gfc_add_expr_to_block (&init, tmp); | |
53169279 | 5657 | } |
5176859a | 5658 | } |
e50e62f5 | 5659 | |
fa7b6574 | 5660 | if (result == NULL_TREE) |
5661 | { | |
5662 | /* TODO: move to the appropriate place in resolve.c. */ | |
90a4a5a6 | 5663 | if (warn_return_type && sym == sym->result) |
fa7b6574 | 5664 | gfc_warning ("Return value of function '%s' at %L not set", |
5665 | sym->name, &sym->declared_at); | |
90a4a5a6 | 5666 | if (warn_return_type) |
5667 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
fa7b6574 | 5668 | } |
4ee9c684 | 5669 | else |
89ac8ba1 | 5670 | gfc_add_expr_to_block (&body, gfc_generate_return ()); |
4ee9c684 | 5671 | } |
89ac8ba1 | 5672 | |
5673 | gfc_init_block (&cleanup); | |
5674 | ||
5675 | /* Reset recursion-check variable. */ | |
5676 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
5677 | && !is_recursive | |
5ae82d58 | 5678 | && !gfc_option.gfc_flag_openmp |
89ac8ba1 | 5679 | && recurcheckvar != NULL_TREE) |
e50e62f5 | 5680 | { |
89ac8ba1 | 5681 | gfc_add_modify (&cleanup, recurcheckvar, boolean_false_node); |
5682 | recurcheckvar = NULL; | |
e50e62f5 | 5683 | } |
2294b616 | 5684 | |
89ac8ba1 | 5685 | /* Finish the function body and add init and cleanup code. */ |
5686 | tmp = gfc_finish_block (&body); | |
5687 | gfc_start_wrapped_block (&try_block, tmp); | |
5688 | /* Add code to create and cleanup arrays. */ | |
5689 | gfc_trans_deferred_vars (sym, &try_block); | |
5690 | gfc_add_init_cleanup (&try_block, gfc_finish_block (&init), | |
5691 | gfc_finish_block (&cleanup)); | |
4ee9c684 | 5692 | |
5693 | /* Add all the decls we created during processing. */ | |
5694 | decl = saved_function_decls; | |
5695 | while (decl) | |
5696 | { | |
5697 | tree next; | |
5698 | ||
1767a056 | 5699 | next = DECL_CHAIN (decl); |
5700 | DECL_CHAIN (decl) = NULL_TREE; | |
4c197fd0 | 5701 | pushdecl (decl); |
4ee9c684 | 5702 | decl = next; |
5703 | } | |
5704 | saved_function_decls = NULL_TREE; | |
5705 | ||
89ac8ba1 | 5706 | DECL_SAVED_TREE (fndecl) = gfc_finish_wrapped_block (&try_block); |
e5004242 | 5707 | decl = getdecls (); |
4ee9c684 | 5708 | |
5709 | /* Finish off this function and send it for code generation. */ | |
cde2be84 | 5710 | poplevel (1, 1); |
4ee9c684 | 5711 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; |
5712 | ||
e5004242 | 5713 | DECL_SAVED_TREE (fndecl) |
5714 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5715 | DECL_INITIAL (fndecl)); | |
5716 | ||
9579733e | 5717 | if (nonlocal_dummy_decls) |
5718 | { | |
5719 | BLOCK_VARS (DECL_INITIAL (fndecl)) | |
5720 | = chainon (BLOCK_VARS (DECL_INITIAL (fndecl)), nonlocal_dummy_decls); | |
5721 | pointer_set_destroy (nonlocal_dummy_decl_pset); | |
5722 | nonlocal_dummy_decls = NULL; | |
5723 | nonlocal_dummy_decl_pset = NULL; | |
5724 | } | |
5725 | ||
4ee9c684 | 5726 | /* Output the GENERIC tree. */ |
5727 | dump_function (TDI_original, fndecl); | |
5728 | ||
5729 | /* Store the end of the function, so that we get good line number | |
5730 | info for the epilogue. */ | |
5731 | cfun->function_end_locus = input_location; | |
5732 | ||
5733 | /* We're leaving the context of this function, so zap cfun. | |
5734 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
5735 | tree_rest_of_compilation. */ | |
87d4aa85 | 5736 | set_cfun (NULL); |
4ee9c684 | 5737 | |
5738 | if (old_context) | |
5739 | { | |
5740 | pop_function_context (); | |
5741 | saved_function_decls = saved_parent_function_decls; | |
5742 | } | |
5743 | current_function_decl = old_context; | |
5744 | ||
1f7747bd | 5745 | if (decl_function_context (fndecl)) |
5746 | { | |
5747 | /* Register this function with cgraph just far enough to get it | |
5748 | added to our parent's nested function list. | |
5749 | If there are static coarrays in this function, the nested _caf_init | |
5750 | function has already called cgraph_create_node, which also created | |
5751 | the cgraph node for this function. */ | |
5752 | if (!has_coarray_vars || gfc_option.coarray != GFC_FCOARRAY_LIB) | |
5753 | (void) cgraph_create_node (fndecl); | |
5754 | } | |
4ee9c684 | 5755 | else |
bb982f66 | 5756 | cgraph_finalize_function (fndecl, true); |
df4d540f | 5757 | |
5758 | gfc_trans_use_stmts (ns); | |
2eb674c9 | 5759 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
7257a5d2 | 5760 | |
5761 | if (sym->attr.is_main_program) | |
5762 | create_main_function (fndecl); | |
89ac8ba1 | 5763 | |
5764 | current_procedure_symbol = previous_procedure_symbol; | |
4ee9c684 | 5765 | } |
5766 | ||
7257a5d2 | 5767 | |
4ee9c684 | 5768 | void |
5769 | gfc_generate_constructors (void) | |
5770 | { | |
22d678e8 | 5771 | gcc_assert (gfc_static_ctors == NULL_TREE); |
4ee9c684 | 5772 | #if 0 |
5773 | tree fnname; | |
5774 | tree type; | |
5775 | tree fndecl; | |
5776 | tree decl; | |
5777 | tree tmp; | |
5778 | ||
5779 | if (gfc_static_ctors == NULL_TREE) | |
5780 | return; | |
5781 | ||
db85cc4f | 5782 | fnname = get_file_function_name ("I"); |
e1036019 | 5783 | type = build_function_type_list (void_type_node, NULL_TREE); |
4ee9c684 | 5784 | |
e60a6f7b | 5785 | fndecl = build_decl (input_location, |
5786 | FUNCTION_DECL, fnname, type); | |
4ee9c684 | 5787 | TREE_PUBLIC (fndecl) = 1; |
5788 | ||
e60a6f7b | 5789 | decl = build_decl (input_location, |
5790 | RESULT_DECL, NULL_TREE, void_type_node); | |
540edea7 | 5791 | DECL_ARTIFICIAL (decl) = 1; |
5792 | DECL_IGNORED_P (decl) = 1; | |
4ee9c684 | 5793 | DECL_CONTEXT (decl) = fndecl; |
5794 | DECL_RESULT (fndecl) = decl; | |
5795 | ||
5796 | pushdecl (fndecl); | |
5797 | ||
5798 | current_function_decl = fndecl; | |
5799 | ||
b2c4af5e | 5800 | rest_of_decl_compilation (fndecl, 1, 0); |
4ee9c684 | 5801 | |
b2c4af5e | 5802 | make_decl_rtl (fndecl); |
4ee9c684 | 5803 | |
00cf115c | 5804 | allocate_struct_function (fndecl, false); |
4ee9c684 | 5805 | |
cde2be84 | 5806 | pushlevel (); |
4ee9c684 | 5807 | |
5808 | for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors)) | |
5809 | { | |
389dd41b | 5810 | tmp = build_call_expr_loc (input_location, |
5811 | TREE_VALUE (gfc_static_ctors), 0); | |
e60a6f7b | 5812 | DECL_SAVED_TREE (fndecl) = build_stmt (input_location, EXPR_STMT, tmp); |
4ee9c684 | 5813 | } |
5814 | ||
e5004242 | 5815 | decl = getdecls (); |
cde2be84 | 5816 | poplevel (1, 1); |
4ee9c684 | 5817 | |
5818 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
e5004242 | 5819 | DECL_SAVED_TREE (fndecl) |
5820 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5821 | DECL_INITIAL (fndecl)); | |
4ee9c684 | 5822 | |
5823 | free_after_parsing (cfun); | |
5824 | free_after_compilation (cfun); | |
5825 | ||
6148a911 | 5826 | tree_rest_of_compilation (fndecl); |
4ee9c684 | 5827 | |
5828 | current_function_decl = NULL_TREE; | |
5829 | #endif | |
5830 | } | |
5831 | ||
9ec7c303 | 5832 | /* Translates a BLOCK DATA program unit. This means emitting the |
5833 | commons contained therein plus their initializations. We also emit | |
5834 | a globally visible symbol to make sure that each BLOCK DATA program | |
5835 | unit remains unique. */ | |
5836 | ||
5837 | void | |
5838 | gfc_generate_block_data (gfc_namespace * ns) | |
5839 | { | |
5840 | tree decl; | |
5841 | tree id; | |
5842 | ||
b31f705b | 5843 | /* Tell the backend the source location of the block data. */ |
5844 | if (ns->proc_name) | |
5845 | gfc_set_backend_locus (&ns->proc_name->declared_at); | |
5846 | else | |
5847 | gfc_set_backend_locus (&gfc_current_locus); | |
5848 | ||
5849 | /* Process the DATA statements. */ | |
9ec7c303 | 5850 | gfc_trans_common (ns); |
5851 | ||
b31f705b | 5852 | /* Create a global symbol with the mane of the block data. This is to |
5853 | generate linker errors if the same name is used twice. It is never | |
5854 | really used. */ | |
9ec7c303 | 5855 | if (ns->proc_name) |
5856 | id = gfc_sym_mangled_function_id (ns->proc_name); | |
5857 | else | |
5858 | id = get_identifier ("__BLOCK_DATA__"); | |
5859 | ||
e60a6f7b | 5860 | decl = build_decl (input_location, |
5861 | VAR_DECL, id, gfc_array_index_type); | |
9ec7c303 | 5862 | TREE_PUBLIC (decl) = 1; |
5863 | TREE_STATIC (decl) = 1; | |
df4d540f | 5864 | DECL_IGNORED_P (decl) = 1; |
9ec7c303 | 5865 | |
5866 | pushdecl (decl); | |
5867 | rest_of_decl_compilation (decl, 1, 0); | |
5868 | } | |
5869 | ||
b549d2a5 | 5870 | |
6a7084d7 | 5871 | /* Process the local variables of a BLOCK construct. */ |
5872 | ||
5873 | void | |
3c82e013 | 5874 | gfc_process_block_locals (gfc_namespace* ns) |
6a7084d7 | 5875 | { |
5876 | tree decl; | |
5877 | ||
5878 | gcc_assert (saved_local_decls == NULL_TREE); | |
a961ca30 | 5879 | has_coarray_vars = false; |
5880 | ||
6a7084d7 | 5881 | generate_local_vars (ns); |
5882 | ||
a961ca30 | 5883 | if (gfc_option.coarray == GFC_FCOARRAY_LIB && has_coarray_vars) |
5884 | generate_coarray_init (ns); | |
5885 | ||
6a7084d7 | 5886 | decl = saved_local_decls; |
5887 | while (decl) | |
5888 | { | |
5889 | tree next; | |
5890 | ||
1767a056 | 5891 | next = DECL_CHAIN (decl); |
5892 | DECL_CHAIN (decl) = NULL_TREE; | |
6a7084d7 | 5893 | pushdecl (decl); |
5894 | decl = next; | |
5895 | } | |
5896 | saved_local_decls = NULL_TREE; | |
5897 | } | |
5898 | ||
5899 | ||
4ee9c684 | 5900 | #include "gt-fortran-trans-decl.h" |