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Commit | Line | Data |
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4ee9c684 | 1 | /* Backend function setup |
617125a6 | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, |
3 | 2011 | |
cfaf579d | 4 | Free Software Foundation, Inc. |
4ee9c684 | 5 | Contributed by Paul Brook |
6 | ||
c84b470d | 7 | This file is part of GCC. |
4ee9c684 | 8 | |
c84b470d | 9 | GCC is free software; you can redistribute it and/or modify it under |
10 | the terms of the GNU General Public License as published by the Free | |
bdabe786 | 11 | Software Foundation; either version 3, or (at your option) any later |
c84b470d | 12 | version. |
4ee9c684 | 13 | |
c84b470d | 14 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
15 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | for more details. | |
4ee9c684 | 18 | |
19 | You should have received a copy of the GNU General Public License | |
bdabe786 | 20 | along with GCC; see the file COPYING3. If not see |
21 | <http://www.gnu.org/licenses/>. */ | |
4ee9c684 | 22 | |
23 | /* trans-decl.c -- Handling of backend function and variable decls, etc */ | |
24 | ||
25 | #include "config.h" | |
26 | #include "system.h" | |
27 | #include "coretypes.h" | |
cb4070e0 | 28 | #include "tm.h" |
4ee9c684 | 29 | #include "tree.h" |
30 | #include "tree-dump.h" | |
989adef3 | 31 | #include "gimple.h" /* For create_tmp_var_raw. */ |
4ee9c684 | 32 | #include "ggc.h" |
7cbc820e | 33 | #include "diagnostic-core.h" /* For internal_error. */ |
34 | #include "toplev.h" /* For announce_function. */ | |
cb4070e0 | 35 | #include "output.h" /* For decl_default_tls_model. */ |
4ee9c684 | 36 | #include "target.h" |
37 | #include "function.h" | |
4ee9c684 | 38 | #include "flags.h" |
39 | #include "cgraph.h" | |
df4d540f | 40 | #include "debug.h" |
4ee9c684 | 41 | #include "gfortran.h" |
9579733e | 42 | #include "pointer-set.h" |
126387b5 | 43 | #include "constructor.h" |
4ee9c684 | 44 | #include "trans.h" |
45 | #include "trans-types.h" | |
46 | #include "trans-array.h" | |
47 | #include "trans-const.h" | |
48 | /* Only for gfc_trans_code. Shouldn't need to include this. */ | |
49 | #include "trans-stmt.h" | |
50 | ||
51 | #define MAX_LABEL_VALUE 99999 | |
52 | ||
53 | ||
54 | /* Holds the result of the function if no result variable specified. */ | |
55 | ||
56 | static GTY(()) tree current_fake_result_decl; | |
c750cc52 | 57 | static GTY(()) tree parent_fake_result_decl; |
4ee9c684 | 58 | |
4ee9c684 | 59 | |
60 | /* Holds the variable DECLs for the current function. */ | |
61 | ||
d4163395 | 62 | static GTY(()) tree saved_function_decls; |
63 | static GTY(()) tree saved_parent_function_decls; | |
4ee9c684 | 64 | |
9579733e | 65 | static struct pointer_set_t *nonlocal_dummy_decl_pset; |
66 | static GTY(()) tree nonlocal_dummy_decls; | |
4ee9c684 | 67 | |
6a7084d7 | 68 | /* Holds the variable DECLs that are locals. */ |
69 | ||
70 | static GTY(()) tree saved_local_decls; | |
71 | ||
4ee9c684 | 72 | /* The namespace of the module we're currently generating. Only used while |
73 | outputting decls for module variables. Do not rely on this being set. */ | |
74 | ||
75 | static gfc_namespace *module_namespace; | |
76 | ||
89ac8ba1 | 77 | /* The currently processed procedure symbol. */ |
78 | static gfc_symbol* current_procedure_symbol = NULL; | |
79 | ||
4ee9c684 | 80 | |
81 | /* List of static constructor functions. */ | |
82 | ||
83 | tree gfc_static_ctors; | |
84 | ||
85 | ||
86 | /* Function declarations for builtin library functions. */ | |
87 | ||
4ee9c684 | 88 | tree gfor_fndecl_pause_numeric; |
89 | tree gfor_fndecl_pause_string; | |
90 | tree gfor_fndecl_stop_numeric; | |
dff2ea5f | 91 | tree gfor_fndecl_stop_numeric_f08; |
4ee9c684 | 92 | tree gfor_fndecl_stop_string; |
070cc790 | 93 | tree gfor_fndecl_error_stop_numeric; |
c6cd3066 | 94 | tree gfor_fndecl_error_stop_string; |
4ee9c684 | 95 | tree gfor_fndecl_runtime_error; |
50ad5fa2 | 96 | tree gfor_fndecl_runtime_error_at; |
da6ffc6d | 97 | tree gfor_fndecl_runtime_warning_at; |
9915365e | 98 | tree gfor_fndecl_os_error; |
50ad5fa2 | 99 | tree gfor_fndecl_generate_error; |
7257a5d2 | 100 | tree gfor_fndecl_set_args; |
8c84a5de | 101 | tree gfor_fndecl_set_fpe; |
56c7c2d7 | 102 | tree gfor_fndecl_set_options; |
15774a8b | 103 | tree gfor_fndecl_set_convert; |
f23886ab | 104 | tree gfor_fndecl_set_record_marker; |
bbaaa7b1 | 105 | tree gfor_fndecl_set_max_subrecord_length; |
b902b078 | 106 | tree gfor_fndecl_ctime; |
107 | tree gfor_fndecl_fdate; | |
dbc97b88 | 108 | tree gfor_fndecl_ttynam; |
4ee9c684 | 109 | tree gfor_fndecl_in_pack; |
110 | tree gfor_fndecl_in_unpack; | |
111 | tree gfor_fndecl_associated; | |
112 | ||
113 | ||
70b5944a | 114 | /* Coarray run-time library function decls. */ |
115 | tree gfor_fndecl_caf_init; | |
116 | tree gfor_fndecl_caf_finalize; | |
117 | tree gfor_fndecl_caf_critical; | |
118 | tree gfor_fndecl_caf_end_critical; | |
119 | tree gfor_fndecl_caf_sync_all; | |
120 | tree gfor_fndecl_caf_sync_images; | |
121 | tree gfor_fndecl_caf_error_stop; | |
122 | tree gfor_fndecl_caf_error_stop_str; | |
123 | ||
124 | /* Coarray global variables for num_images/this_image. */ | |
125 | ||
126 | tree gfort_gvar_caf_num_images; | |
127 | tree gfort_gvar_caf_this_image; | |
128 | ||
129 | ||
4ee9c684 | 130 | /* Math functions. Many other math functions are handled in |
131 | trans-intrinsic.c. */ | |
132 | ||
920e54ef | 133 | gfc_powdecl_list gfor_fndecl_math_powi[4][3]; |
4ee9c684 | 134 | tree gfor_fndecl_math_ishftc4; |
135 | tree gfor_fndecl_math_ishftc8; | |
920e54ef | 136 | tree gfor_fndecl_math_ishftc16; |
4ee9c684 | 137 | |
138 | ||
139 | /* String functions. */ | |
140 | ||
4ee9c684 | 141 | tree gfor_fndecl_compare_string; |
142 | tree gfor_fndecl_concat_string; | |
143 | tree gfor_fndecl_string_len_trim; | |
144 | tree gfor_fndecl_string_index; | |
145 | tree gfor_fndecl_string_scan; | |
146 | tree gfor_fndecl_string_verify; | |
147 | tree gfor_fndecl_string_trim; | |
5fcc6ec2 | 148 | tree gfor_fndecl_string_minmax; |
4ee9c684 | 149 | tree gfor_fndecl_adjustl; |
150 | tree gfor_fndecl_adjustr; | |
b44437b9 | 151 | tree gfor_fndecl_select_string; |
40b806de | 152 | tree gfor_fndecl_compare_string_char4; |
153 | tree gfor_fndecl_concat_string_char4; | |
154 | tree gfor_fndecl_string_len_trim_char4; | |
155 | tree gfor_fndecl_string_index_char4; | |
156 | tree gfor_fndecl_string_scan_char4; | |
157 | tree gfor_fndecl_string_verify_char4; | |
158 | tree gfor_fndecl_string_trim_char4; | |
159 | tree gfor_fndecl_string_minmax_char4; | |
160 | tree gfor_fndecl_adjustl_char4; | |
161 | tree gfor_fndecl_adjustr_char4; | |
b44437b9 | 162 | tree gfor_fndecl_select_string_char4; |
163 | ||
164 | ||
165 | /* Conversion between character kinds. */ | |
166 | tree gfor_fndecl_convert_char1_to_char4; | |
167 | tree gfor_fndecl_convert_char4_to_char1; | |
4ee9c684 | 168 | |
169 | ||
170 | /* Other misc. runtime library functions. */ | |
4ee9c684 | 171 | tree gfor_fndecl_size0; |
172 | tree gfor_fndecl_size1; | |
9b057c29 | 173 | tree gfor_fndecl_iargc; |
4ee9c684 | 174 | |
59e2a584 | 175 | /* Intrinsic functions implemented in Fortran. */ |
176 | tree gfor_fndecl_sc_kind; | |
4ee9c684 | 177 | tree gfor_fndecl_si_kind; |
178 | tree gfor_fndecl_sr_kind; | |
179 | ||
4e8e57b0 | 180 | /* BLAS gemm functions. */ |
181 | tree gfor_fndecl_sgemm; | |
182 | tree gfor_fndecl_dgemm; | |
183 | tree gfor_fndecl_cgemm; | |
184 | tree gfor_fndecl_zgemm; | |
185 | ||
4ee9c684 | 186 | |
187 | static void | |
188 | gfc_add_decl_to_parent_function (tree decl) | |
189 | { | |
22d678e8 | 190 | gcc_assert (decl); |
4ee9c684 | 191 | DECL_CONTEXT (decl) = DECL_CONTEXT (current_function_decl); |
192 | DECL_NONLOCAL (decl) = 1; | |
1767a056 | 193 | DECL_CHAIN (decl) = saved_parent_function_decls; |
4ee9c684 | 194 | saved_parent_function_decls = decl; |
195 | } | |
196 | ||
197 | void | |
198 | gfc_add_decl_to_function (tree decl) | |
199 | { | |
22d678e8 | 200 | gcc_assert (decl); |
4ee9c684 | 201 | TREE_USED (decl) = 1; |
202 | DECL_CONTEXT (decl) = current_function_decl; | |
1767a056 | 203 | DECL_CHAIN (decl) = saved_function_decls; |
4ee9c684 | 204 | saved_function_decls = decl; |
205 | } | |
206 | ||
6a7084d7 | 207 | static void |
208 | add_decl_as_local (tree decl) | |
209 | { | |
210 | gcc_assert (decl); | |
211 | TREE_USED (decl) = 1; | |
212 | DECL_CONTEXT (decl) = current_function_decl; | |
1767a056 | 213 | DECL_CHAIN (decl) = saved_local_decls; |
6a7084d7 | 214 | saved_local_decls = decl; |
215 | } | |
216 | ||
4ee9c684 | 217 | |
b797d6d3 | 218 | /* Build a backend label declaration. Set TREE_USED for named labels. |
219 | The context of the label is always the current_function_decl. All | |
220 | labels are marked artificial. */ | |
4ee9c684 | 221 | |
222 | tree | |
223 | gfc_build_label_decl (tree label_id) | |
224 | { | |
225 | /* 2^32 temporaries should be enough. */ | |
226 | static unsigned int tmp_num = 1; | |
227 | tree label_decl; | |
228 | char *label_name; | |
229 | ||
230 | if (label_id == NULL_TREE) | |
231 | { | |
232 | /* Build an internal label name. */ | |
233 | ASM_FORMAT_PRIVATE_NAME (label_name, "L", tmp_num++); | |
234 | label_id = get_identifier (label_name); | |
235 | } | |
236 | else | |
237 | label_name = NULL; | |
238 | ||
239 | /* Build the LABEL_DECL node. Labels have no type. */ | |
e60a6f7b | 240 | label_decl = build_decl (input_location, |
241 | LABEL_DECL, label_id, void_type_node); | |
4ee9c684 | 242 | DECL_CONTEXT (label_decl) = current_function_decl; |
243 | DECL_MODE (label_decl) = VOIDmode; | |
244 | ||
b797d6d3 | 245 | /* We always define the label as used, even if the original source |
246 | file never references the label. We don't want all kinds of | |
247 | spurious warnings for old-style Fortran code with too many | |
248 | labels. */ | |
249 | TREE_USED (label_decl) = 1; | |
4ee9c684 | 250 | |
b797d6d3 | 251 | DECL_ARTIFICIAL (label_decl) = 1; |
4ee9c684 | 252 | return label_decl; |
253 | } | |
254 | ||
255 | ||
b31f705b | 256 | /* Set the backend source location of a decl. */ |
257 | ||
258 | void | |
259 | gfc_set_decl_location (tree decl, locus * loc) | |
260 | { | |
b31f705b | 261 | DECL_SOURCE_LOCATION (decl) = loc->lb->location; |
b31f705b | 262 | } |
263 | ||
264 | ||
4ee9c684 | 265 | /* Return the backend label declaration for a given label structure, |
266 | or create it if it doesn't exist yet. */ | |
267 | ||
268 | tree | |
269 | gfc_get_label_decl (gfc_st_label * lp) | |
270 | { | |
4ee9c684 | 271 | if (lp->backend_decl) |
272 | return lp->backend_decl; | |
273 | else | |
274 | { | |
275 | char label_name[GFC_MAX_SYMBOL_LEN + 1]; | |
276 | tree label_decl; | |
277 | ||
278 | /* Validate the label declaration from the front end. */ | |
22d678e8 | 279 | gcc_assert (lp != NULL && lp->value <= MAX_LABEL_VALUE); |
4ee9c684 | 280 | |
281 | /* Build a mangled name for the label. */ | |
282 | sprintf (label_name, "__label_%.6d", lp->value); | |
283 | ||
284 | /* Build the LABEL_DECL node. */ | |
285 | label_decl = gfc_build_label_decl (get_identifier (label_name)); | |
286 | ||
287 | /* Tell the debugger where the label came from. */ | |
f888a3fb | 288 | if (lp->value <= MAX_LABEL_VALUE) /* An internal label. */ |
b31f705b | 289 | gfc_set_decl_location (label_decl, &lp->where); |
4ee9c684 | 290 | else |
291 | DECL_ARTIFICIAL (label_decl) = 1; | |
292 | ||
293 | /* Store the label in the label list and return the LABEL_DECL. */ | |
294 | lp->backend_decl = label_decl; | |
295 | return label_decl; | |
296 | } | |
297 | } | |
298 | ||
299 | ||
300 | /* Convert a gfc_symbol to an identifier of the same name. */ | |
301 | ||
302 | static tree | |
303 | gfc_sym_identifier (gfc_symbol * sym) | |
304 | { | |
0509d0ee | 305 | if (sym->attr.is_main_program && strcmp (sym->name, "main") == 0) |
306 | return (get_identifier ("MAIN__")); | |
307 | else | |
308 | return (get_identifier (sym->name)); | |
4ee9c684 | 309 | } |
310 | ||
311 | ||
312 | /* Construct mangled name from symbol name. */ | |
313 | ||
314 | static tree | |
315 | gfc_sym_mangled_identifier (gfc_symbol * sym) | |
316 | { | |
317 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
318 | ||
c5d33754 | 319 | /* Prevent the mangling of identifiers that have an assigned |
320 | binding label (mainly those that are bind(c)). */ | |
321 | if (sym->attr.is_bind_c == 1 | |
322 | && sym->binding_label[0] != '\0') | |
323 | return get_identifier(sym->binding_label); | |
324 | ||
4f0fae8e | 325 | if (sym->module == NULL) |
4ee9c684 | 326 | return gfc_sym_identifier (sym); |
327 | else | |
328 | { | |
f08a3f6f | 329 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
4ee9c684 | 330 | return get_identifier (name); |
331 | } | |
332 | } | |
333 | ||
334 | ||
335 | /* Construct mangled function name from symbol name. */ | |
336 | ||
337 | static tree | |
338 | gfc_sym_mangled_function_id (gfc_symbol * sym) | |
339 | { | |
340 | int has_underscore; | |
341 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
342 | ||
c5d33754 | 343 | /* It may be possible to simply use the binding label if it's |
344 | provided, and remove the other checks. Then we could use it | |
345 | for other things if we wished. */ | |
346 | if ((sym->attr.is_bind_c == 1 || sym->attr.is_iso_c == 1) && | |
347 | sym->binding_label[0] != '\0') | |
348 | /* use the binding label rather than the mangled name */ | |
349 | return get_identifier (sym->binding_label); | |
350 | ||
4f0fae8e | 351 | if (sym->module == NULL || sym->attr.proc == PROC_EXTERNAL |
12441a18 | 352 | || (sym->module != NULL && (sym->attr.external |
353 | || sym->attr.if_source == IFSRC_IFBODY))) | |
4ee9c684 | 354 | { |
a2f97da7 | 355 | /* Main program is mangled into MAIN__. */ |
356 | if (sym->attr.is_main_program) | |
357 | return get_identifier ("MAIN__"); | |
358 | ||
359 | /* Intrinsic procedures are never mangled. */ | |
360 | if (sym->attr.proc == PROC_INTRINSIC) | |
4ee9c684 | 361 | return get_identifier (sym->name); |
362 | ||
363 | if (gfc_option.flag_underscoring) | |
364 | { | |
365 | has_underscore = strchr (sym->name, '_') != 0; | |
366 | if (gfc_option.flag_second_underscore && has_underscore) | |
367 | snprintf (name, sizeof name, "%s__", sym->name); | |
368 | else | |
369 | snprintf (name, sizeof name, "%s_", sym->name); | |
370 | return get_identifier (name); | |
371 | } | |
372 | else | |
373 | return get_identifier (sym->name); | |
374 | } | |
375 | else | |
376 | { | |
f08a3f6f | 377 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
4ee9c684 | 378 | return get_identifier (name); |
379 | } | |
380 | } | |
381 | ||
382 | ||
1236e28b | 383 | void |
384 | gfc_set_decl_assembler_name (tree decl, tree name) | |
385 | { | |
386 | tree target_mangled = targetm.mangle_decl_assembler_name (decl, name); | |
387 | SET_DECL_ASSEMBLER_NAME (decl, target_mangled); | |
388 | } | |
389 | ||
390 | ||
5ed82495 | 391 | /* Returns true if a variable of specified size should go on the stack. */ |
392 | ||
393 | int | |
394 | gfc_can_put_var_on_stack (tree size) | |
395 | { | |
396 | unsigned HOST_WIDE_INT low; | |
397 | ||
398 | if (!INTEGER_CST_P (size)) | |
399 | return 0; | |
400 | ||
401 | if (gfc_option.flag_max_stack_var_size < 0) | |
402 | return 1; | |
403 | ||
404 | if (TREE_INT_CST_HIGH (size) != 0) | |
405 | return 0; | |
406 | ||
407 | low = TREE_INT_CST_LOW (size); | |
408 | if (low > (unsigned HOST_WIDE_INT) gfc_option.flag_max_stack_var_size) | |
409 | return 0; | |
410 | ||
411 | /* TODO: Set a per-function stack size limit. */ | |
412 | ||
413 | return 1; | |
414 | } | |
415 | ||
416 | ||
b7bf3f81 | 417 | /* gfc_finish_cray_pointee sets DECL_VALUE_EXPR for a Cray pointee to |
418 | an expression involving its corresponding pointer. There are | |
419 | 2 cases; one for variable size arrays, and one for everything else, | |
420 | because variable-sized arrays require one fewer level of | |
421 | indirection. */ | |
422 | ||
423 | static void | |
424 | gfc_finish_cray_pointee (tree decl, gfc_symbol *sym) | |
425 | { | |
426 | tree ptr_decl = gfc_get_symbol_decl (sym->cp_pointer); | |
427 | tree value; | |
428 | ||
429 | /* Parameters need to be dereferenced. */ | |
430 | if (sym->cp_pointer->attr.dummy) | |
389dd41b | 431 | ptr_decl = build_fold_indirect_ref_loc (input_location, |
432 | ptr_decl); | |
b7bf3f81 | 433 | |
434 | /* Check to see if we're dealing with a variable-sized array. */ | |
435 | if (sym->attr.dimension | |
436 | && TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE) | |
437 | { | |
942043f8 | 438 | /* These decls will be dereferenced later, so we don't dereference |
b7bf3f81 | 439 | them here. */ |
440 | value = convert (TREE_TYPE (decl), ptr_decl); | |
441 | } | |
442 | else | |
443 | { | |
444 | ptr_decl = convert (build_pointer_type (TREE_TYPE (decl)), | |
445 | ptr_decl); | |
389dd41b | 446 | value = build_fold_indirect_ref_loc (input_location, |
447 | ptr_decl); | |
b7bf3f81 | 448 | } |
449 | ||
450 | SET_DECL_VALUE_EXPR (decl, value); | |
451 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
764f1175 | 452 | GFC_DECL_CRAY_POINTEE (decl) = 1; |
b7bf3f81 | 453 | /* This is a fake variable just for debugging purposes. */ |
454 | TREE_ASM_WRITTEN (decl) = 1; | |
455 | } | |
456 | ||
457 | ||
b9c7fce7 | 458 | /* Finish processing of a declaration without an initial value. */ |
4ee9c684 | 459 | |
460 | static void | |
b9c7fce7 | 461 | gfc_finish_decl (tree decl) |
4ee9c684 | 462 | { |
b9c7fce7 | 463 | gcc_assert (TREE_CODE (decl) == PARM_DECL |
464 | || DECL_INITIAL (decl) == NULL_TREE); | |
4ee9c684 | 465 | |
b9c7fce7 | 466 | if (TREE_CODE (decl) != VAR_DECL) |
467 | return; | |
4ee9c684 | 468 | |
b9c7fce7 | 469 | if (DECL_SIZE (decl) == NULL_TREE |
470 | && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE) | |
471 | layout_decl (decl, 0); | |
472 | ||
473 | /* A few consistency checks. */ | |
474 | /* A static variable with an incomplete type is an error if it is | |
475 | initialized. Also if it is not file scope. Otherwise, let it | |
476 | through, but if it is not `extern' then it may cause an error | |
477 | message later. */ | |
478 | /* An automatic variable with an incomplete type is an error. */ | |
479 | ||
480 | /* We should know the storage size. */ | |
481 | gcc_assert (DECL_SIZE (decl) != NULL_TREE | |
482 | || (TREE_STATIC (decl) | |
483 | ? (!DECL_INITIAL (decl) || !DECL_CONTEXT (decl)) | |
484 | : DECL_EXTERNAL (decl))); | |
485 | ||
486 | /* The storage size should be constant. */ | |
487 | gcc_assert ((!DECL_EXTERNAL (decl) && !TREE_STATIC (decl)) | |
488 | || !DECL_SIZE (decl) | |
489 | || TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST); | |
4ee9c684 | 490 | } |
491 | ||
492 | ||
493 | /* Apply symbol attributes to a variable, and add it to the function scope. */ | |
494 | ||
495 | static void | |
496 | gfc_finish_var_decl (tree decl, gfc_symbol * sym) | |
497 | { | |
c1977dbe | 498 | tree new_type; |
f888a3fb | 499 | /* TREE_ADDRESSABLE means the address of this variable is actually needed. |
4ee9c684 | 500 | This is the equivalent of the TARGET variables. |
501 | We also need to set this if the variable is passed by reference in a | |
502 | CALL statement. */ | |
b549d2a5 | 503 | |
b7bf3f81 | 504 | /* Set DECL_VALUE_EXPR for Cray Pointees. */ |
b549d2a5 | 505 | if (sym->attr.cray_pointee) |
b7bf3f81 | 506 | gfc_finish_cray_pointee (decl, sym); |
b549d2a5 | 507 | |
4ee9c684 | 508 | if (sym->attr.target) |
509 | TREE_ADDRESSABLE (decl) = 1; | |
510 | /* If it wasn't used we wouldn't be getting it. */ | |
511 | TREE_USED (decl) = 1; | |
512 | ||
513 | /* Chain this decl to the pending declarations. Don't do pushdecl() | |
514 | because this would add them to the current scope rather than the | |
515 | function scope. */ | |
516 | if (current_function_decl != NULL_TREE) | |
517 | { | |
7af6a4af | 518 | if (sym->ns->proc_name->backend_decl == current_function_decl |
6a7084d7 | 519 | || sym->result == sym) |
4ee9c684 | 520 | gfc_add_decl_to_function (decl); |
6a7084d7 | 521 | else if (sym->ns->proc_name->attr.flavor == FL_LABEL) |
522 | /* This is a BLOCK construct. */ | |
523 | add_decl_as_local (decl); | |
4ee9c684 | 524 | else |
525 | gfc_add_decl_to_parent_function (decl); | |
526 | } | |
527 | ||
b7bf3f81 | 528 | if (sym->attr.cray_pointee) |
529 | return; | |
530 | ||
c5d33754 | 531 | if(sym->attr.is_bind_c == 1) |
532 | { | |
533 | /* We need to put variables that are bind(c) into the common | |
534 | segment of the object file, because this is what C would do. | |
535 | gfortran would typically put them in either the BSS or | |
536 | initialized data segments, and only mark them as common if | |
537 | they were part of common blocks. However, if they are not put | |
ea657963 | 538 | into common space, then C cannot initialize global Fortran |
c5d33754 | 539 | variables that it interoperates with and the draft says that |
540 | either Fortran or C should be able to initialize it (but not | |
541 | both, of course.) (J3/04-007, section 15.3). */ | |
542 | TREE_PUBLIC(decl) = 1; | |
543 | DECL_COMMON(decl) = 1; | |
544 | } | |
545 | ||
4ee9c684 | 546 | /* If a variable is USE associated, it's always external. */ |
547 | if (sym->attr.use_assoc) | |
548 | { | |
549 | DECL_EXTERNAL (decl) = 1; | |
550 | TREE_PUBLIC (decl) = 1; | |
551 | } | |
4f0fae8e | 552 | else if (sym->module && !sym->attr.result && !sym->attr.dummy) |
4ee9c684 | 553 | { |
6b20224d | 554 | /* TODO: Don't set sym->module for result or dummy variables. */ |
7af6a4af | 555 | gcc_assert (current_function_decl == NULL_TREE || sym->result == sym); |
4ee9c684 | 556 | /* This is the declaration of a module variable. */ |
557 | TREE_PUBLIC (decl) = 1; | |
558 | TREE_STATIC (decl) = 1; | |
559 | } | |
560 | ||
f0d4969f | 561 | /* Derived types are a bit peculiar because of the possibility of |
562 | a default initializer; this must be applied each time the variable | |
563 | comes into scope it therefore need not be static. These variables | |
564 | are SAVE_NONE but have an initializer. Otherwise explicitly | |
69b1505f | 565 | initialized variables are SAVE_IMPLICIT and explicitly saved are |
f0d4969f | 566 | SAVE_EXPLICIT. */ |
567 | if (!sym->attr.use_assoc | |
568 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
569 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
4ee9c684 | 570 | TREE_STATIC (decl) = 1; |
ef814c81 | 571 | |
572 | if (sym->attr.volatile_) | |
573 | { | |
ef814c81 | 574 | TREE_THIS_VOLATILE (decl) = 1; |
2364aa60 | 575 | TREE_SIDE_EFFECTS (decl) = 1; |
c1977dbe | 576 | new_type = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE); |
577 | TREE_TYPE (decl) = new_type; | |
ef814c81 | 578 | } |
579 | ||
4ee9c684 | 580 | /* Keep variables larger than max-stack-var-size off stack. */ |
581 | if (!sym->ns->proc_name->attr.recursive | |
582 | && INTEGER_CST_P (DECL_SIZE_UNIT (decl)) | |
a3f2c0e1 | 583 | && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) |
584 | /* Put variable length auto array pointers always into stack. */ | |
585 | && (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE | |
586 | || sym->attr.dimension == 0 | |
587 | || sym->as->type != AS_EXPLICIT | |
588 | || sym->attr.pointer | |
589 | || sym->attr.allocatable) | |
590 | && !DECL_ARTIFICIAL (decl)) | |
4ee9c684 | 591 | TREE_STATIC (decl) = 1; |
764f1175 | 592 | |
593 | /* Handle threadprivate variables. */ | |
9dda1f80 | 594 | if (sym->attr.threadprivate |
764f1175 | 595 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) |
596 | DECL_TLS_MODEL (decl) = decl_default_tls_model (decl); | |
e1b3b79b | 597 | |
598 | if (!sym->attr.target | |
599 | && !sym->attr.pointer | |
452695a8 | 600 | && !sym->attr.cray_pointee |
8bb76364 | 601 | && !sym->attr.proc_pointer) |
602 | DECL_RESTRICTED_P (decl) = 1; | |
4ee9c684 | 603 | } |
604 | ||
605 | ||
606 | /* Allocate the lang-specific part of a decl. */ | |
607 | ||
608 | void | |
609 | gfc_allocate_lang_decl (tree decl) | |
610 | { | |
ba72912a | 611 | DECL_LANG_SPECIFIC (decl) = ggc_alloc_cleared_lang_decl(sizeof |
612 | (struct lang_decl)); | |
4ee9c684 | 613 | } |
614 | ||
615 | /* Remember a symbol to generate initialization/cleanup code at function | |
616 | entry/exit. */ | |
617 | ||
618 | static void | |
619 | gfc_defer_symbol_init (gfc_symbol * sym) | |
620 | { | |
621 | gfc_symbol *p; | |
622 | gfc_symbol *last; | |
623 | gfc_symbol *head; | |
624 | ||
625 | /* Don't add a symbol twice. */ | |
626 | if (sym->tlink) | |
627 | return; | |
628 | ||
629 | last = head = sym->ns->proc_name; | |
630 | p = last->tlink; | |
631 | ||
632 | /* Make sure that setup code for dummy variables which are used in the | |
633 | setup of other variables is generated first. */ | |
634 | if (sym->attr.dummy) | |
635 | { | |
636 | /* Find the first dummy arg seen after us, or the first non-dummy arg. | |
637 | This is a circular list, so don't go past the head. */ | |
638 | while (p != head | |
639 | && (!p->attr.dummy || p->dummy_order > sym->dummy_order)) | |
640 | { | |
641 | last = p; | |
642 | p = p->tlink; | |
643 | } | |
644 | } | |
645 | /* Insert in between last and p. */ | |
646 | last->tlink = sym; | |
647 | sym->tlink = p; | |
648 | } | |
649 | ||
650 | ||
9f5a9ac5 | 651 | /* Used in gfc_get_symbol_decl and gfc_get_derived_type to obtain the |
652 | backend_decl for a module symbol, if it all ready exists. If the | |
653 | module gsymbol does not exist, it is created. If the symbol does | |
654 | not exist, it is added to the gsymbol namespace. Returns true if | |
655 | an existing backend_decl is found. */ | |
656 | ||
657 | bool | |
658 | gfc_get_module_backend_decl (gfc_symbol *sym) | |
659 | { | |
660 | gfc_gsymbol *gsym; | |
661 | gfc_symbol *s; | |
662 | gfc_symtree *st; | |
663 | ||
664 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
665 | ||
666 | if (!gsym || (gsym->ns && gsym->type == GSYM_MODULE)) | |
667 | { | |
668 | st = NULL; | |
669 | s = NULL; | |
670 | ||
671 | if (gsym) | |
672 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
673 | ||
674 | if (!s) | |
675 | { | |
676 | if (!gsym) | |
677 | { | |
678 | gsym = gfc_get_gsymbol (sym->module); | |
679 | gsym->type = GSYM_MODULE; | |
680 | gsym->ns = gfc_get_namespace (NULL, 0); | |
681 | } | |
682 | ||
683 | st = gfc_new_symtree (&gsym->ns->sym_root, sym->name); | |
684 | st->n.sym = sym; | |
685 | sym->refs++; | |
686 | } | |
687 | else if (sym->attr.flavor == FL_DERIVED) | |
688 | { | |
689 | if (!s->backend_decl) | |
690 | s->backend_decl = gfc_get_derived_type (s); | |
691 | gfc_copy_dt_decls_ifequal (s, sym, true); | |
692 | return true; | |
693 | } | |
694 | else if (s->backend_decl) | |
695 | { | |
696 | if (sym->ts.type == BT_DERIVED) | |
697 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, | |
698 | true); | |
699 | else if (sym->ts.type == BT_CHARACTER) | |
700 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; | |
701 | sym->backend_decl = s->backend_decl; | |
702 | return true; | |
703 | } | |
704 | } | |
705 | return false; | |
706 | } | |
707 | ||
708 | ||
4ee9c684 | 709 | /* Create an array index type variable with function scope. */ |
710 | ||
711 | static tree | |
712 | create_index_var (const char * pfx, int nest) | |
713 | { | |
714 | tree decl; | |
715 | ||
716 | decl = gfc_create_var_np (gfc_array_index_type, pfx); | |
717 | if (nest) | |
718 | gfc_add_decl_to_parent_function (decl); | |
719 | else | |
720 | gfc_add_decl_to_function (decl); | |
721 | return decl; | |
722 | } | |
723 | ||
724 | ||
725 | /* Create variables to hold all the non-constant bits of info for a | |
726 | descriptorless array. Remember these in the lang-specific part of the | |
727 | type. */ | |
728 | ||
729 | static void | |
730 | gfc_build_qualified_array (tree decl, gfc_symbol * sym) | |
731 | { | |
732 | tree type; | |
733 | int dim; | |
734 | int nest; | |
7b82374f | 735 | gfc_namespace* procns; |
4ee9c684 | 736 | |
737 | type = TREE_TYPE (decl); | |
738 | ||
739 | /* We just use the descriptor, if there is one. */ | |
740 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
741 | return; | |
742 | ||
22d678e8 | 743 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
7b82374f | 744 | procns = gfc_find_proc_namespace (sym->ns); |
745 | nest = (procns->proc_name->backend_decl != current_function_decl) | |
4ee9c684 | 746 | && !sym->attr.contained; |
747 | ||
748 | for (dim = 0; dim < GFC_TYPE_ARRAY_RANK (type); dim++) | |
749 | { | |
750 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
86254bbf | 751 | { |
752 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
753 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
754 | } | |
9ca15c9b | 755 | /* Don't try to use the unknown bound for assumed shape arrays. */ |
4ee9c684 | 756 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE |
757 | && (sym->as->type != AS_ASSUMED_SIZE | |
758 | || dim < GFC_TYPE_ARRAY_RANK (type) - 1)) | |
86254bbf | 759 | { |
760 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
761 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
762 | } | |
4ee9c684 | 763 | |
764 | if (GFC_TYPE_ARRAY_STRIDE (type, dim) == NULL_TREE) | |
86254bbf | 765 | { |
766 | GFC_TYPE_ARRAY_STRIDE (type, dim) = create_index_var ("stride", nest); | |
767 | TREE_NO_WARNING (GFC_TYPE_ARRAY_STRIDE (type, dim)) = 1; | |
768 | } | |
4ee9c684 | 769 | } |
076094b7 | 770 | for (dim = GFC_TYPE_ARRAY_RANK (type); |
771 | dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type); dim++) | |
772 | { | |
773 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
774 | { | |
775 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
776 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
777 | } | |
778 | /* Don't try to use the unknown ubound for the last coarray dimension. */ | |
779 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE | |
780 | && dim < GFC_TYPE_ARRAY_RANK (type) + GFC_TYPE_ARRAY_CORANK (type) - 1) | |
781 | { | |
782 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
783 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
784 | } | |
785 | } | |
4ee9c684 | 786 | if (GFC_TYPE_ARRAY_OFFSET (type) == NULL_TREE) |
787 | { | |
788 | GFC_TYPE_ARRAY_OFFSET (type) = gfc_create_var_np (gfc_array_index_type, | |
789 | "offset"); | |
86254bbf | 790 | TREE_NO_WARNING (GFC_TYPE_ARRAY_OFFSET (type)) = 1; |
791 | ||
4ee9c684 | 792 | if (nest) |
793 | gfc_add_decl_to_parent_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
794 | else | |
795 | gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
796 | } | |
d4163395 | 797 | |
798 | if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE | |
799 | && sym->as->type != AS_ASSUMED_SIZE) | |
86254bbf | 800 | { |
801 | GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest); | |
802 | TREE_NO_WARNING (GFC_TYPE_ARRAY_SIZE (type)) = 1; | |
803 | } | |
d4163395 | 804 | |
805 | if (POINTER_TYPE_P (type)) | |
806 | { | |
807 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type))); | |
808 | gcc_assert (TYPE_LANG_SPECIFIC (type) | |
809 | == TYPE_LANG_SPECIFIC (TREE_TYPE (type))); | |
810 | type = TREE_TYPE (type); | |
811 | } | |
812 | ||
813 | if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type)) | |
814 | { | |
815 | tree size, range; | |
816 | ||
fd779e1d | 817 | size = fold_build2_loc (input_location, MINUS_EXPR, gfc_array_index_type, |
818 | GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node); | |
d4163395 | 819 | range = build_range_type (gfc_array_index_type, gfc_index_zero_node, |
820 | size); | |
821 | TYPE_DOMAIN (type) = range; | |
822 | layout_type (type); | |
823 | } | |
6cf159a6 | 824 | |
6cf159a6 | 825 | if (TYPE_NAME (type) != NULL_TREE |
826 | && GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1) != NULL_TREE | |
827 | && TREE_CODE (GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1)) == VAR_DECL) | |
828 | { | |
829 | tree gtype = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
830 | ||
831 | for (dim = 0; dim < sym->as->rank - 1; dim++) | |
832 | { | |
833 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
834 | gtype = TREE_TYPE (gtype); | |
835 | } | |
836 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
837 | if (TYPE_MAX_VALUE (TYPE_DOMAIN (gtype)) == NULL) | |
838 | TYPE_NAME (type) = NULL_TREE; | |
839 | } | |
840 | ||
841 | if (TYPE_NAME (type) == NULL_TREE) | |
842 | { | |
843 | tree gtype = TREE_TYPE (type), rtype, type_decl; | |
844 | ||
845 | for (dim = sym->as->rank - 1; dim >= 0; dim--) | |
846 | { | |
7130ec9d | 847 | tree lbound, ubound; |
848 | lbound = GFC_TYPE_ARRAY_LBOUND (type, dim); | |
849 | ubound = GFC_TYPE_ARRAY_UBOUND (type, dim); | |
850 | rtype = build_range_type (gfc_array_index_type, lbound, ubound); | |
6cf159a6 | 851 | gtype = build_array_type (gtype, rtype); |
3c8f1d7e | 852 | /* Ensure the bound variables aren't optimized out at -O0. |
853 | For -O1 and above they often will be optimized out, but | |
84bfaaeb | 854 | can be tracked by VTA. Also set DECL_NAMELESS, so that |
855 | the artificial lbound.N or ubound.N DECL_NAME doesn't | |
856 | end up in debug info. */ | |
7130ec9d | 857 | if (lbound && TREE_CODE (lbound) == VAR_DECL |
858 | && DECL_ARTIFICIAL (lbound) && DECL_IGNORED_P (lbound)) | |
859 | { | |
860 | if (DECL_NAME (lbound) | |
861 | && strstr (IDENTIFIER_POINTER (DECL_NAME (lbound)), | |
862 | "lbound") != 0) | |
84bfaaeb | 863 | DECL_NAMELESS (lbound) = 1; |
7130ec9d | 864 | DECL_IGNORED_P (lbound) = 0; |
865 | } | |
866 | if (ubound && TREE_CODE (ubound) == VAR_DECL | |
867 | && DECL_ARTIFICIAL (ubound) && DECL_IGNORED_P (ubound)) | |
868 | { | |
869 | if (DECL_NAME (ubound) | |
870 | && strstr (IDENTIFIER_POINTER (DECL_NAME (ubound)), | |
871 | "ubound") != 0) | |
84bfaaeb | 872 | DECL_NAMELESS (ubound) = 1; |
7130ec9d | 873 | DECL_IGNORED_P (ubound) = 0; |
874 | } | |
6cf159a6 | 875 | } |
e60a6f7b | 876 | TYPE_NAME (type) = type_decl = build_decl (input_location, |
877 | TYPE_DECL, NULL, gtype); | |
6cf159a6 | 878 | DECL_ORIGINAL_TYPE (type_decl) = gtype; |
879 | } | |
4ee9c684 | 880 | } |
881 | ||
882 | ||
883 | /* For some dummy arguments we don't use the actual argument directly. | |
5ed82495 | 884 | Instead we create a local decl and use that. This allows us to perform |
4ee9c684 | 885 | initialization, and construct full type information. */ |
886 | ||
887 | static tree | |
888 | gfc_build_dummy_array_decl (gfc_symbol * sym, tree dummy) | |
889 | { | |
890 | tree decl; | |
891 | tree type; | |
892 | gfc_array_spec *as; | |
893 | char *name; | |
3d8dea5a | 894 | gfc_packed packed; |
4ee9c684 | 895 | int n; |
896 | bool known_size; | |
897 | ||
898 | if (sym->attr.pointer || sym->attr.allocatable) | |
899 | return dummy; | |
900 | ||
901 | /* Add to list of variables if not a fake result variable. */ | |
902 | if (sym->attr.result || sym->attr.dummy) | |
903 | gfc_defer_symbol_init (sym); | |
904 | ||
905 | type = TREE_TYPE (dummy); | |
22d678e8 | 906 | gcc_assert (TREE_CODE (dummy) == PARM_DECL |
4ee9c684 | 907 | && POINTER_TYPE_P (type)); |
908 | ||
f888a3fb | 909 | /* Do we know the element size? */ |
4ee9c684 | 910 | known_size = sym->ts.type != BT_CHARACTER |
eeebe20b | 911 | || INTEGER_CST_P (sym->ts.u.cl->backend_decl); |
4ee9c684 | 912 | |
913 | if (known_size && !GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (type))) | |
914 | { | |
915 | /* For descriptorless arrays with known element size the actual | |
916 | argument is sufficient. */ | |
22d678e8 | 917 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
4ee9c684 | 918 | gfc_build_qualified_array (dummy, sym); |
919 | return dummy; | |
920 | } | |
921 | ||
922 | type = TREE_TYPE (type); | |
923 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
924 | { | |
cb8e3560 | 925 | /* Create a descriptorless array pointer. */ |
4ee9c684 | 926 | as = sym->as; |
3d8dea5a | 927 | packed = PACKED_NO; |
3d235846 | 928 | |
929 | /* Even when -frepack-arrays is used, symbols with TARGET attribute | |
930 | are not repacked. */ | |
931 | if (!gfc_option.flag_repack_arrays || sym->attr.target) | |
4ee9c684 | 932 | { |
933 | if (as->type == AS_ASSUMED_SIZE) | |
3d8dea5a | 934 | packed = PACKED_FULL; |
4ee9c684 | 935 | } |
936 | else | |
937 | { | |
938 | if (as->type == AS_EXPLICIT) | |
939 | { | |
3d8dea5a | 940 | packed = PACKED_FULL; |
4ee9c684 | 941 | for (n = 0; n < as->rank; n++) |
942 | { | |
943 | if (!(as->upper[n] | |
944 | && as->lower[n] | |
945 | && as->upper[n]->expr_type == EXPR_CONSTANT | |
946 | && as->lower[n]->expr_type == EXPR_CONSTANT)) | |
3d8dea5a | 947 | packed = PACKED_PARTIAL; |
4ee9c684 | 948 | } |
949 | } | |
950 | else | |
3d8dea5a | 951 | packed = PACKED_PARTIAL; |
4ee9c684 | 952 | } |
953 | ||
954 | type = gfc_typenode_for_spec (&sym->ts); | |
e1b3b79b | 955 | type = gfc_get_nodesc_array_type (type, sym->as, packed, |
956 | !sym->attr.target); | |
4ee9c684 | 957 | } |
958 | else | |
959 | { | |
960 | /* We now have an expression for the element size, so create a fully | |
961 | qualified type. Reset sym->backend decl or this will just return the | |
962 | old type. */ | |
d95efb59 | 963 | DECL_ARTIFICIAL (sym->backend_decl) = 1; |
4ee9c684 | 964 | sym->backend_decl = NULL_TREE; |
965 | type = gfc_sym_type (sym); | |
3d8dea5a | 966 | packed = PACKED_FULL; |
4ee9c684 | 967 | } |
968 | ||
969 | ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0); | |
e60a6f7b | 970 | decl = build_decl (input_location, |
971 | VAR_DECL, get_identifier (name), type); | |
4ee9c684 | 972 | |
973 | DECL_ARTIFICIAL (decl) = 1; | |
84bfaaeb | 974 | DECL_NAMELESS (decl) = 1; |
4ee9c684 | 975 | TREE_PUBLIC (decl) = 0; |
976 | TREE_STATIC (decl) = 0; | |
977 | DECL_EXTERNAL (decl) = 0; | |
978 | ||
979 | /* We should never get deferred shape arrays here. We used to because of | |
980 | frontend bugs. */ | |
22d678e8 | 981 | gcc_assert (sym->as->type != AS_DEFERRED); |
4ee9c684 | 982 | |
3d8dea5a | 983 | if (packed == PACKED_PARTIAL) |
984 | GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1; | |
985 | else if (packed == PACKED_FULL) | |
986 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
4ee9c684 | 987 | |
988 | gfc_build_qualified_array (decl, sym); | |
989 | ||
990 | if (DECL_LANG_SPECIFIC (dummy)) | |
991 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (dummy); | |
992 | else | |
993 | gfc_allocate_lang_decl (decl); | |
994 | ||
995 | GFC_DECL_SAVED_DESCRIPTOR (decl) = dummy; | |
996 | ||
997 | if (sym->ns->proc_name->backend_decl == current_function_decl | |
998 | || sym->attr.contained) | |
999 | gfc_add_decl_to_function (decl); | |
1000 | else | |
1001 | gfc_add_decl_to_parent_function (decl); | |
1002 | ||
1003 | return decl; | |
1004 | } | |
1005 | ||
9579733e | 1006 | /* For symbol SYM with GFC_DECL_SAVED_DESCRIPTOR used in contained |
1007 | function add a VAR_DECL to the current function with DECL_VALUE_EXPR | |
1008 | pointing to the artificial variable for debug info purposes. */ | |
1009 | ||
1010 | static void | |
1011 | gfc_nonlocal_dummy_array_decl (gfc_symbol *sym) | |
1012 | { | |
1013 | tree decl, dummy; | |
1014 | ||
1015 | if (! nonlocal_dummy_decl_pset) | |
1016 | nonlocal_dummy_decl_pset = pointer_set_create (); | |
1017 | ||
1018 | if (pointer_set_insert (nonlocal_dummy_decl_pset, sym->backend_decl)) | |
1019 | return; | |
1020 | ||
1021 | dummy = GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl); | |
e60a6f7b | 1022 | decl = build_decl (input_location, VAR_DECL, DECL_NAME (dummy), |
9579733e | 1023 | TREE_TYPE (sym->backend_decl)); |
1024 | DECL_ARTIFICIAL (decl) = 0; | |
1025 | TREE_USED (decl) = 1; | |
1026 | TREE_PUBLIC (decl) = 0; | |
1027 | TREE_STATIC (decl) = 0; | |
1028 | DECL_EXTERNAL (decl) = 0; | |
1029 | if (DECL_BY_REFERENCE (dummy)) | |
1030 | DECL_BY_REFERENCE (decl) = 1; | |
1031 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (sym->backend_decl); | |
1032 | SET_DECL_VALUE_EXPR (decl, sym->backend_decl); | |
1033 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
1034 | DECL_CONTEXT (decl) = DECL_CONTEXT (sym->backend_decl); | |
1767a056 | 1035 | DECL_CHAIN (decl) = nonlocal_dummy_decls; |
9579733e | 1036 | nonlocal_dummy_decls = decl; |
1037 | } | |
4ee9c684 | 1038 | |
1039 | /* Return a constant or a variable to use as a string length. Does not | |
1040 | add the decl to the current scope. */ | |
1041 | ||
1042 | static tree | |
1043 | gfc_create_string_length (gfc_symbol * sym) | |
1044 | { | |
eeebe20b | 1045 | gcc_assert (sym->ts.u.cl); |
1046 | gfc_conv_const_charlen (sym->ts.u.cl); | |
a4abf8a0 | 1047 | |
eeebe20b | 1048 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
4ee9c684 | 1049 | { |
a4abf8a0 | 1050 | tree length; |
4ee9c684 | 1051 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2]; |
1052 | ||
1053 | /* Also prefix the mangled name. */ | |
1054 | strcpy (&name[1], sym->name); | |
1055 | name[0] = '.'; | |
e60a6f7b | 1056 | length = build_decl (input_location, |
1057 | VAR_DECL, get_identifier (name), | |
9ad09405 | 1058 | gfc_charlen_type_node); |
4ee9c684 | 1059 | DECL_ARTIFICIAL (length) = 1; |
1060 | TREE_USED (length) = 1; | |
d4163395 | 1061 | if (sym->ns->proc_name->tlink != NULL) |
1062 | gfc_defer_symbol_init (sym); | |
a4abf8a0 | 1063 | |
eeebe20b | 1064 | sym->ts.u.cl->backend_decl = length; |
4ee9c684 | 1065 | } |
1066 | ||
eeebe20b | 1067 | gcc_assert (sym->ts.u.cl->backend_decl != NULL_TREE); |
1068 | return sym->ts.u.cl->backend_decl; | |
4ee9c684 | 1069 | } |
1070 | ||
c8f1568f | 1071 | /* If a variable is assigned a label, we add another two auxiliary |
1072 | variables. */ | |
1073 | ||
1074 | static void | |
1075 | gfc_add_assign_aux_vars (gfc_symbol * sym) | |
1076 | { | |
1077 | tree addr; | |
1078 | tree length; | |
1079 | tree decl; | |
1080 | ||
1081 | gcc_assert (sym->backend_decl); | |
1082 | ||
1083 | decl = sym->backend_decl; | |
1084 | gfc_allocate_lang_decl (decl); | |
1085 | GFC_DECL_ASSIGN (decl) = 1; | |
e60a6f7b | 1086 | length = build_decl (input_location, |
1087 | VAR_DECL, create_tmp_var_name (sym->name), | |
c8f1568f | 1088 | gfc_charlen_type_node); |
e60a6f7b | 1089 | addr = build_decl (input_location, |
1090 | VAR_DECL, create_tmp_var_name (sym->name), | |
c8f1568f | 1091 | pvoid_type_node); |
1092 | gfc_finish_var_decl (length, sym); | |
1093 | gfc_finish_var_decl (addr, sym); | |
1094 | /* STRING_LENGTH is also used as flag. Less than -1 means that | |
1095 | ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the | |
1096 | target label's address. Otherwise, value is the length of a format string | |
1097 | and ASSIGN_ADDR is its address. */ | |
1098 | if (TREE_STATIC (length)) | |
1099 | DECL_INITIAL (length) = build_int_cst (NULL_TREE, -2); | |
1100 | else | |
1101 | gfc_defer_symbol_init (sym); | |
1102 | ||
1103 | GFC_DECL_STRING_LEN (decl) = length; | |
1104 | GFC_DECL_ASSIGN_ADDR (decl) = addr; | |
1105 | } | |
4ee9c684 | 1106 | |
36b0a1b0 | 1107 | |
1108 | static tree | |
1109 | add_attributes_to_decl (symbol_attribute sym_attr, tree list) | |
1110 | { | |
1111 | unsigned id; | |
1112 | tree attr; | |
1113 | ||
1114 | for (id = 0; id < EXT_ATTR_NUM; id++) | |
1115 | if (sym_attr.ext_attr & (1 << id)) | |
1116 | { | |
1117 | attr = build_tree_list ( | |
1118 | get_identifier (ext_attr_list[id].middle_end_name), | |
1119 | NULL_TREE); | |
1120 | list = chainon (list, attr); | |
1121 | } | |
1122 | ||
1123 | return list; | |
1124 | } | |
1125 | ||
1126 | ||
802532b9 | 1127 | static void build_function_decl (gfc_symbol * sym, bool global); |
1128 | ||
1129 | ||
4ee9c684 | 1130 | /* Return the decl for a gfc_symbol, create it if it doesn't already |
1131 | exist. */ | |
1132 | ||
1133 | tree | |
1134 | gfc_get_symbol_decl (gfc_symbol * sym) | |
1135 | { | |
1136 | tree decl; | |
1137 | tree length = NULL_TREE; | |
36b0a1b0 | 1138 | tree attributes; |
4ee9c684 | 1139 | int byref; |
cd2c99b8 | 1140 | bool intrinsic_array_parameter = false; |
4ee9c684 | 1141 | |
0b5dc8b5 | 1142 | gcc_assert (sym->attr.referenced |
d0f6ad22 | 1143 | || sym->attr.use_assoc |
40c74b02 | 1144 | || sym->ns->proc_name->attr.if_source == IFSRC_IFBODY |
1145 | || (sym->module && sym->attr.if_source != IFSRC_DECL | |
1146 | && sym->backend_decl)); | |
4ee9c684 | 1147 | |
ff70e443 | 1148 | if (sym->ns && sym->ns->proc_name && sym->ns->proc_name->attr.function) |
4ee9c684 | 1149 | byref = gfc_return_by_reference (sym->ns->proc_name); |
1150 | else | |
1151 | byref = 0; | |
1152 | ||
09c509ed | 1153 | /* Make sure that the vtab for the declared type is completed. */ |
1154 | if (sym->ts.type == BT_CLASS) | |
1155 | { | |
50b4b37b | 1156 | gfc_component *c = CLASS_DATA (sym); |
09c509ed | 1157 | if (!c->ts.u.derived->backend_decl) |
09276310 | 1158 | gfc_find_derived_vtab (c->ts.u.derived); |
09c509ed | 1159 | } |
1160 | ||
617125a6 | 1161 | /* All deferred character length procedures need to retain the backend |
1162 | decl, which is a pointer to the character length in the caller's | |
1163 | namespace and to declare a local character length. */ | |
1164 | if (!byref && sym->attr.function | |
1165 | && sym->ts.type == BT_CHARACTER | |
1166 | && sym->ts.deferred | |
1167 | && sym->ts.u.cl->passed_length == NULL | |
1168 | && sym->ts.u.cl->backend_decl | |
1169 | && TREE_CODE (sym->ts.u.cl->backend_decl) == PARM_DECL) | |
1170 | { | |
1171 | sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1172 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1173 | length = gfc_create_string_length (sym); | |
1174 | } | |
1175 | ||
4ee9c684 | 1176 | if ((sym->attr.dummy && ! sym->attr.function) || (sym->attr.result && byref)) |
1177 | { | |
1178 | /* Return via extra parameter. */ | |
1179 | if (sym->attr.result && byref | |
1180 | && !sym->backend_decl) | |
1181 | { | |
1182 | sym->backend_decl = | |
1183 | DECL_ARGUMENTS (sym->ns->proc_name->backend_decl); | |
c6871095 | 1184 | /* For entry master function skip over the __entry |
1185 | argument. */ | |
1186 | if (sym->ns->proc_name->attr.entry_master) | |
1767a056 | 1187 | sym->backend_decl = DECL_CHAIN (sym->backend_decl); |
4ee9c684 | 1188 | } |
1189 | ||
1190 | /* Dummy variables should already have been created. */ | |
22d678e8 | 1191 | gcc_assert (sym->backend_decl); |
4ee9c684 | 1192 | |
1193 | /* Create a character length variable. */ | |
1194 | if (sym->ts.type == BT_CHARACTER) | |
1195 | { | |
617125a6 | 1196 | /* For a deferred dummy, make a new string length variable. */ |
1197 | if (sym->ts.deferred | |
1198 | && | |
1199 | (sym->ts.u.cl->passed_length == sym->ts.u.cl->backend_decl)) | |
1200 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1201 | ||
1202 | if (sym->ts.deferred && sym->attr.result | |
1203 | && sym->ts.u.cl->passed_length == NULL | |
1204 | && sym->ts.u.cl->backend_decl) | |
1205 | { | |
1206 | sym->ts.u.cl->passed_length = sym->ts.u.cl->backend_decl; | |
1207 | sym->ts.u.cl->backend_decl = NULL_TREE; | |
1208 | } | |
1209 | ||
eeebe20b | 1210 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
d4163395 | 1211 | length = gfc_create_string_length (sym); |
1212 | else | |
eeebe20b | 1213 | length = sym->ts.u.cl->backend_decl; |
d4163395 | 1214 | if (TREE_CODE (length) == VAR_DECL |
16a40513 | 1215 | && DECL_FILE_SCOPE_P (length)) |
4ee9c684 | 1216 | { |
d95efb59 | 1217 | /* Add the string length to the same context as the symbol. */ |
1218 | if (DECL_CONTEXT (sym->backend_decl) == current_function_decl) | |
1219 | gfc_add_decl_to_function (length); | |
1220 | else | |
1221 | gfc_add_decl_to_parent_function (length); | |
1222 | ||
1223 | gcc_assert (DECL_CONTEXT (sym->backend_decl) == | |
1224 | DECL_CONTEXT (length)); | |
1225 | ||
d4163395 | 1226 | gfc_defer_symbol_init (sym); |
e8ff3944 | 1227 | } |
4ee9c684 | 1228 | } |
1229 | ||
1230 | /* Use a copy of the descriptor for dummy arrays. */ | |
1231 | if (sym->attr.dimension && !TREE_USED (sym->backend_decl)) | |
1232 | { | |
d95efb59 | 1233 | decl = gfc_build_dummy_array_decl (sym, sym->backend_decl); |
1234 | /* Prevent the dummy from being detected as unused if it is copied. */ | |
1235 | if (sym->backend_decl != NULL && decl != sym->backend_decl) | |
1236 | DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
1237 | sym->backend_decl = decl; | |
4ee9c684 | 1238 | } |
1239 | ||
1240 | TREE_USED (sym->backend_decl) = 1; | |
c8f1568f | 1241 | if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0) |
1242 | { | |
1243 | gfc_add_assign_aux_vars (sym); | |
1244 | } | |
9579733e | 1245 | |
1246 | if (sym->attr.dimension | |
1247 | && DECL_LANG_SPECIFIC (sym->backend_decl) | |
1248 | && GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl) | |
1249 | && DECL_CONTEXT (sym->backend_decl) != current_function_decl) | |
1250 | gfc_nonlocal_dummy_array_decl (sym); | |
1251 | ||
4ee9c684 | 1252 | return sym->backend_decl; |
1253 | } | |
1254 | ||
1255 | if (sym->backend_decl) | |
1256 | return sym->backend_decl; | |
1257 | ||
a25debd0 | 1258 | /* Special case for array-valued named constants from intrinsic |
1259 | procedures; those are inlined. */ | |
1260 | if (sym->attr.use_assoc && sym->from_intmod | |
1261 | && sym->attr.flavor == FL_PARAMETER) | |
1262 | intrinsic_array_parameter = true; | |
1263 | ||
7ea64434 | 1264 | /* If use associated and whole file compilation, use the module |
094bca96 | 1265 | declaration. */ |
7ea64434 | 1266 | if (gfc_option.flag_whole_file |
a25debd0 | 1267 | && (sym->attr.flavor == FL_VARIABLE |
1268 | || sym->attr.flavor == FL_PARAMETER) | |
9f5a9ac5 | 1269 | && sym->attr.use_assoc |
1270 | && !intrinsic_array_parameter | |
1271 | && sym->module | |
1272 | && gfc_get_module_backend_decl (sym)) | |
1273 | return sym->backend_decl; | |
7ea64434 | 1274 | |
4ee9c684 | 1275 | if (sym->attr.flavor == FL_PROCEDURE) |
1276 | { | |
802532b9 | 1277 | /* Catch function declarations. Only used for actual parameters, |
1278 | procedure pointers and procptr initialization targets. */ | |
1279 | if (sym->attr.external || sym->attr.use_assoc || sym->attr.intrinsic) | |
1280 | { | |
1281 | decl = gfc_get_extern_function_decl (sym); | |
1282 | gfc_set_decl_location (decl, &sym->declared_at); | |
1283 | } | |
1284 | else | |
1285 | { | |
1286 | if (!sym->backend_decl) | |
1287 | build_function_decl (sym, false); | |
1288 | decl = sym->backend_decl; | |
1289 | } | |
4ee9c684 | 1290 | return decl; |
1291 | } | |
1292 | ||
1293 | if (sym->attr.intrinsic) | |
1294 | internal_error ("intrinsic variable which isn't a procedure"); | |
1295 | ||
1296 | /* Create string length decl first so that they can be used in the | |
1297 | type declaration. */ | |
1298 | if (sym->ts.type == BT_CHARACTER) | |
1299 | length = gfc_create_string_length (sym); | |
1300 | ||
1301 | /* Create the decl for the variable. */ | |
e60a6f7b | 1302 | decl = build_decl (sym->declared_at.lb->location, |
1303 | VAR_DECL, gfc_sym_identifier (sym), gfc_sym_type (sym)); | |
b31f705b | 1304 | |
1236e28b | 1305 | /* Add attributes to variables. Functions are handled elsewhere. */ |
1306 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); | |
1307 | decl_attributes (&decl, attributes, 0); | |
1308 | ||
f888a3fb | 1309 | /* Symbols from modules should have their assembler names mangled. |
4ee9c684 | 1310 | This is done here rather than in gfc_finish_var_decl because it |
1311 | is different for string length variables. */ | |
4f0fae8e | 1312 | if (sym->module) |
df4d540f | 1313 | { |
1236e28b | 1314 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); |
cd2c99b8 | 1315 | if (sym->attr.use_assoc && !intrinsic_array_parameter) |
df4d540f | 1316 | DECL_IGNORED_P (decl) = 1; |
1317 | } | |
4ee9c684 | 1318 | |
1319 | if (sym->attr.dimension) | |
1320 | { | |
1321 | /* Create variables to hold the non-constant bits of array info. */ | |
1322 | gfc_build_qualified_array (decl, sym); | |
1323 | ||
b3c3927c | 1324 | if (sym->attr.contiguous |
1325 | || ((sym->attr.allocatable || !sym->attr.dummy) && !sym->attr.pointer)) | |
4ee9c684 | 1326 | GFC_DECL_PACKED_ARRAY (decl) = 1; |
1327 | } | |
1328 | ||
0a96a7cc | 1329 | /* Remember this variable for allocation/cleanup. */ |
cf92f151 | 1330 | if (sym->attr.dimension || sym->attr.allocatable |
0a96a7cc | 1331 | || (sym->ts.type == BT_CLASS && |
50b4b37b | 1332 | (CLASS_DATA (sym)->attr.dimension |
1333 | || CLASS_DATA (sym)->attr.allocatable)) | |
0a96a7cc | 1334 | || (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
1335 | /* This applies a derived type default initializer. */ | |
1336 | || (sym->ts.type == BT_DERIVED | |
1337 | && sym->attr.save == SAVE_NONE | |
1338 | && !sym->attr.data | |
1339 | && !sym->attr.allocatable | |
1340 | && (sym->value && !sym->ns->proc_name->attr.is_main_program) | |
cd2c99b8 | 1341 | && !(sym->attr.use_assoc && !intrinsic_array_parameter))) |
f0d4969f | 1342 | gfc_defer_symbol_init (sym); |
2294b616 | 1343 | |
4ee9c684 | 1344 | gfc_finish_var_decl (decl, sym); |
1345 | ||
bda1f152 | 1346 | if (sym->ts.type == BT_CHARACTER) |
4ee9c684 | 1347 | { |
4ee9c684 | 1348 | /* Character variables need special handling. */ |
1349 | gfc_allocate_lang_decl (decl); | |
1350 | ||
bda1f152 | 1351 | if (TREE_CODE (length) != INTEGER_CST) |
4ee9c684 | 1352 | { |
1353 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2]; | |
1354 | ||
4f0fae8e | 1355 | if (sym->module) |
4ee9c684 | 1356 | { |
1357 | /* Also prefix the mangled name for symbols from modules. */ | |
1358 | strcpy (&name[1], sym->name); | |
1359 | name[0] = '.'; | |
1360 | strcpy (&name[1], | |
1361 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (length))); | |
1236e28b | 1362 | gfc_set_decl_assembler_name (decl, get_identifier (name)); |
4ee9c684 | 1363 | } |
1364 | gfc_finish_var_decl (length, sym); | |
22d678e8 | 1365 | gcc_assert (!sym->value); |
4ee9c684 | 1366 | } |
4ee9c684 | 1367 | } |
1033248c | 1368 | else if (sym->attr.subref_array_pointer) |
1369 | { | |
1370 | /* We need the span for these beasts. */ | |
1371 | gfc_allocate_lang_decl (decl); | |
1372 | } | |
1373 | ||
1374 | if (sym->attr.subref_array_pointer) | |
1375 | { | |
1376 | tree span; | |
1377 | GFC_DECL_SUBREF_ARRAY_P (decl) = 1; | |
e60a6f7b | 1378 | span = build_decl (input_location, |
1379 | VAR_DECL, create_tmp_var_name ("span"), | |
1033248c | 1380 | gfc_array_index_type); |
1381 | gfc_finish_var_decl (span, sym); | |
6180d82a | 1382 | TREE_STATIC (span) = TREE_STATIC (decl); |
1383 | DECL_ARTIFICIAL (span) = 1; | |
1384 | DECL_INITIAL (span) = build_int_cst (gfc_array_index_type, 0); | |
1033248c | 1385 | |
1386 | GFC_DECL_SPAN (decl) = span; | |
6180d82a | 1387 | GFC_TYPE_ARRAY_SPAN (TREE_TYPE (decl)) = span; |
1033248c | 1388 | } |
1389 | ||
4ee9c684 | 1390 | sym->backend_decl = decl; |
1391 | ||
c8f1568f | 1392 | if (sym->attr.assign) |
21ebda4d | 1393 | gfc_add_assign_aux_vars (sym); |
c8f1568f | 1394 | |
cd2c99b8 | 1395 | if (intrinsic_array_parameter) |
1396 | { | |
1397 | TREE_STATIC (decl) = 1; | |
1398 | DECL_EXTERNAL (decl) = 0; | |
1399 | } | |
1400 | ||
1401 | if (TREE_STATIC (decl) | |
1402 | && !(sym->attr.use_assoc && !intrinsic_array_parameter) | |
a545a8f8 | 1403 | && (sym->attr.save || sym->ns->proc_name->attr.is_main_program |
1404 | || gfc_option.flag_max_stack_var_size == 0 | |
1405 | || sym->attr.data || sym->ns->proc_name->attr.flavor == FL_MODULE)) | |
1406 | { | |
1407 | /* Add static initializer. For procedures, it is only needed if | |
1408 | SAVE is specified otherwise they need to be reinitialized | |
1409 | every time the procedure is entered. The TREE_STATIC is | |
1410 | in this case due to -fmax-stack-var-size=. */ | |
bda1f152 | 1411 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
802532b9 | 1412 | TREE_TYPE (decl), |
1413 | sym->attr.dimension, | |
1414 | sym->attr.pointer | |
1415 | || sym->attr.allocatable, | |
1416 | sym->attr.proc_pointer); | |
bda1f152 | 1417 | } |
1418 | ||
9579733e | 1419 | if (!TREE_STATIC (decl) |
1420 | && POINTER_TYPE_P (TREE_TYPE (decl)) | |
1421 | && !sym->attr.pointer | |
1422 | && !sym->attr.allocatable | |
1423 | && !sym->attr.proc_pointer) | |
1424 | DECL_BY_REFERENCE (decl) = 1; | |
1425 | ||
4ee9c684 | 1426 | return decl; |
1427 | } | |
1428 | ||
1429 | ||
dbe60343 | 1430 | /* Substitute a temporary variable in place of the real one. */ |
1431 | ||
1432 | void | |
1433 | gfc_shadow_sym (gfc_symbol * sym, tree decl, gfc_saved_var * save) | |
1434 | { | |
1435 | save->attr = sym->attr; | |
1436 | save->decl = sym->backend_decl; | |
1437 | ||
1438 | gfc_clear_attr (&sym->attr); | |
1439 | sym->attr.referenced = 1; | |
1440 | sym->attr.flavor = FL_VARIABLE; | |
1441 | ||
1442 | sym->backend_decl = decl; | |
1443 | } | |
1444 | ||
1445 | ||
1446 | /* Restore the original variable. */ | |
1447 | ||
1448 | void | |
1449 | gfc_restore_sym (gfc_symbol * sym, gfc_saved_var * save) | |
1450 | { | |
1451 | sym->attr = save->attr; | |
1452 | sym->backend_decl = save->decl; | |
1453 | } | |
1454 | ||
1455 | ||
cad0ddcf | 1456 | /* Declare a procedure pointer. */ |
1457 | ||
1458 | static tree | |
1459 | get_proc_pointer_decl (gfc_symbol *sym) | |
1460 | { | |
1461 | tree decl; | |
36b0a1b0 | 1462 | tree attributes; |
cad0ddcf | 1463 | |
1464 | decl = sym->backend_decl; | |
1465 | if (decl) | |
1466 | return decl; | |
1467 | ||
e60a6f7b | 1468 | decl = build_decl (input_location, |
1469 | VAR_DECL, get_identifier (sym->name), | |
cad0ddcf | 1470 | build_pointer_type (gfc_get_function_type (sym))); |
1471 | ||
e72f979a | 1472 | if ((sym->ns->proc_name |
1473 | && sym->ns->proc_name->backend_decl == current_function_decl) | |
cad0ddcf | 1474 | || sym->attr.contained) |
1475 | gfc_add_decl_to_function (decl); | |
cf269acc | 1476 | else if (sym->ns->proc_name->attr.flavor != FL_MODULE) |
cad0ddcf | 1477 | gfc_add_decl_to_parent_function (decl); |
1478 | ||
1479 | sym->backend_decl = decl; | |
1480 | ||
cf269acc | 1481 | /* If a variable is USE associated, it's always external. */ |
1482 | if (sym->attr.use_assoc) | |
1483 | { | |
1484 | DECL_EXTERNAL (decl) = 1; | |
1485 | TREE_PUBLIC (decl) = 1; | |
1486 | } | |
1487 | else if (sym->module && sym->ns->proc_name->attr.flavor == FL_MODULE) | |
1488 | { | |
1489 | /* This is the declaration of a module variable. */ | |
1490 | TREE_PUBLIC (decl) = 1; | |
1491 | TREE_STATIC (decl) = 1; | |
1492 | } | |
1493 | ||
cad0ddcf | 1494 | if (!sym->attr.use_assoc |
1495 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
1496 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
1497 | TREE_STATIC (decl) = 1; | |
1498 | ||
1499 | if (TREE_STATIC (decl) && sym->value) | |
1500 | { | |
1501 | /* Add static initializer. */ | |
1502 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
802532b9 | 1503 | TREE_TYPE (decl), |
1504 | sym->attr.dimension, | |
1505 | false, true); | |
cad0ddcf | 1506 | } |
1507 | ||
36b0a1b0 | 1508 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1509 | decl_attributes (&decl, attributes, 0); | |
1510 | ||
cad0ddcf | 1511 | return decl; |
1512 | } | |
1513 | ||
1514 | ||
4ee9c684 | 1515 | /* Get a basic decl for an external function. */ |
1516 | ||
1517 | tree | |
1518 | gfc_get_extern_function_decl (gfc_symbol * sym) | |
1519 | { | |
1520 | tree type; | |
1521 | tree fndecl; | |
36b0a1b0 | 1522 | tree attributes; |
4ee9c684 | 1523 | gfc_expr e; |
1524 | gfc_intrinsic_sym *isym; | |
1525 | gfc_expr argexpr; | |
17000b91 | 1526 | char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */ |
4ee9c684 | 1527 | tree name; |
1528 | tree mangled_name; | |
83aeedb9 | 1529 | gfc_gsymbol *gsym; |
4ee9c684 | 1530 | |
1531 | if (sym->backend_decl) | |
1532 | return sym->backend_decl; | |
1533 | ||
1b716045 | 1534 | /* We should never be creating external decls for alternate entry points. |
1535 | The procedure may be an alternate entry point, but we don't want/need | |
1536 | to know that. */ | |
22d678e8 | 1537 | gcc_assert (!(sym->attr.entry || sym->attr.entry_master)); |
1b716045 | 1538 | |
cad0ddcf | 1539 | if (sym->attr.proc_pointer) |
1540 | return get_proc_pointer_decl (sym); | |
1541 | ||
83aeedb9 | 1542 | /* See if this is an external procedure from the same file. If so, |
1543 | return the backend_decl. */ | |
1544 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->name); | |
1545 | ||
1546 | if (gfc_option.flag_whole_file | |
40c74b02 | 1547 | && (!sym->attr.use_assoc || sym->attr.if_source != IFSRC_DECL) |
83aeedb9 | 1548 | && !sym->backend_decl |
1549 | && gsym && gsym->ns | |
1550 | && ((gsym->type == GSYM_SUBROUTINE) || (gsym->type == GSYM_FUNCTION)) | |
d896f9b3 | 1551 | && (gsym->ns->proc_name->backend_decl || !sym->attr.intrinsic)) |
83aeedb9 | 1552 | { |
d896f9b3 | 1553 | if (!gsym->ns->proc_name->backend_decl) |
1554 | { | |
1555 | /* By construction, the external function cannot be | |
1556 | a contained procedure. */ | |
1557 | locus old_loc; | |
1558 | tree save_fn_decl = current_function_decl; | |
1559 | ||
1560 | current_function_decl = NULL_TREE; | |
4671339c | 1561 | gfc_save_backend_locus (&old_loc); |
d896f9b3 | 1562 | push_cfun (cfun); |
1563 | ||
1564 | gfc_create_function_decl (gsym->ns, true); | |
1565 | ||
1566 | pop_cfun (); | |
4671339c | 1567 | gfc_restore_backend_locus (&old_loc); |
d896f9b3 | 1568 | current_function_decl = save_fn_decl; |
1569 | } | |
1570 | ||
83aeedb9 | 1571 | /* If the namespace has entries, the proc_name is the |
1572 | entry master. Find the entry and use its backend_decl. | |
1573 | otherwise, use the proc_name backend_decl. */ | |
1574 | if (gsym->ns->entries) | |
1575 | { | |
1576 | gfc_entry_list *entry = gsym->ns->entries; | |
1577 | ||
1578 | for (; entry; entry = entry->next) | |
1579 | { | |
1580 | if (strcmp (gsym->name, entry->sym->name) == 0) | |
1581 | { | |
1582 | sym->backend_decl = entry->sym->backend_decl; | |
1583 | break; | |
1584 | } | |
1585 | } | |
1586 | } | |
1587 | else | |
40c74b02 | 1588 | sym->backend_decl = gsym->ns->proc_name->backend_decl; |
83aeedb9 | 1589 | |
1590 | if (sym->backend_decl) | |
40c74b02 | 1591 | { |
1592 | /* Avoid problems of double deallocation of the backend declaration | |
1593 | later in gfc_trans_use_stmts; cf. PR 45087. */ | |
1594 | if (sym->attr.if_source != IFSRC_DECL && sym->attr.use_assoc) | |
1595 | sym->attr.use_assoc = 0; | |
1596 | ||
1597 | return sym->backend_decl; | |
1598 | } | |
83aeedb9 | 1599 | } |
1600 | ||
7ea64434 | 1601 | /* See if this is a module procedure from the same file. If so, |
1602 | return the backend_decl. */ | |
1603 | if (sym->module) | |
1604 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
1605 | ||
1606 | if (gfc_option.flag_whole_file | |
1607 | && gsym && gsym->ns | |
1608 | && gsym->type == GSYM_MODULE) | |
1609 | { | |
1610 | gfc_symbol *s; | |
1611 | ||
1612 | s = NULL; | |
1613 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
1614 | if (s && s->backend_decl) | |
1615 | { | |
1616 | sym->backend_decl = s->backend_decl; | |
1617 | return sym->backend_decl; | |
1618 | } | |
1619 | } | |
1620 | ||
4ee9c684 | 1621 | if (sym->attr.intrinsic) |
1622 | { | |
1623 | /* Call the resolution function to get the actual name. This is | |
1624 | a nasty hack which relies on the resolution functions only looking | |
1625 | at the first argument. We pass NULL for the second argument | |
1626 | otherwise things like AINT get confused. */ | |
1627 | isym = gfc_find_function (sym->name); | |
22d678e8 | 1628 | gcc_assert (isym->resolve.f0 != NULL); |
4ee9c684 | 1629 | |
1630 | memset (&e, 0, sizeof (e)); | |
1631 | e.expr_type = EXPR_FUNCTION; | |
1632 | ||
1633 | memset (&argexpr, 0, sizeof (argexpr)); | |
22d678e8 | 1634 | gcc_assert (isym->formal); |
4ee9c684 | 1635 | argexpr.ts = isym->formal->ts; |
1636 | ||
1637 | if (isym->formal->next == NULL) | |
1638 | isym->resolve.f1 (&e, &argexpr); | |
1639 | else | |
1640 | { | |
37e0271a | 1641 | if (isym->formal->next->next == NULL) |
1642 | isym->resolve.f2 (&e, &argexpr, NULL); | |
1643 | else | |
1644 | { | |
7fe55cc9 | 1645 | if (isym->formal->next->next->next == NULL) |
1646 | isym->resolve.f3 (&e, &argexpr, NULL, NULL); | |
1647 | else | |
1648 | { | |
1649 | /* All specific intrinsics take less than 5 arguments. */ | |
1650 | gcc_assert (isym->formal->next->next->next->next == NULL); | |
1651 | isym->resolve.f4 (&e, &argexpr, NULL, NULL, NULL); | |
1652 | } | |
37e0271a | 1653 | } |
4ee9c684 | 1654 | } |
bdaed7d2 | 1655 | |
1656 | if (gfc_option.flag_f2c | |
1657 | && ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind) | |
1658 | || e.ts.type == BT_COMPLEX)) | |
1659 | { | |
1660 | /* Specific which needs a different implementation if f2c | |
1661 | calling conventions are used. */ | |
17000b91 | 1662 | sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name); |
bdaed7d2 | 1663 | } |
1664 | else | |
17000b91 | 1665 | sprintf (s, "_gfortran_specific%s", e.value.function.name); |
bdaed7d2 | 1666 | |
4ee9c684 | 1667 | name = get_identifier (s); |
1668 | mangled_name = name; | |
1669 | } | |
1670 | else | |
1671 | { | |
1672 | name = gfc_sym_identifier (sym); | |
1673 | mangled_name = gfc_sym_mangled_function_id (sym); | |
1674 | } | |
1675 | ||
1676 | type = gfc_get_function_type (sym); | |
e60a6f7b | 1677 | fndecl = build_decl (input_location, |
1678 | FUNCTION_DECL, name, type); | |
4ee9c684 | 1679 | |
e27454ee | 1680 | /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; |
1681 | TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
851d9296 | 1682 | the opposite of declaring a function as static in C). */ |
e27454ee | 1683 | DECL_EXTERNAL (fndecl) = 1; |
1684 | TREE_PUBLIC (fndecl) = 1; | |
1685 | ||
1236e28b | 1686 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1687 | decl_attributes (&fndecl, attributes, 0); | |
1688 | ||
1689 | gfc_set_decl_assembler_name (fndecl, mangled_name); | |
4ee9c684 | 1690 | |
1691 | /* Set the context of this decl. */ | |
1692 | if (0 && sym->ns && sym->ns->proc_name) | |
1693 | { | |
1694 | /* TODO: Add external decls to the appropriate scope. */ | |
1695 | DECL_CONTEXT (fndecl) = sym->ns->proc_name->backend_decl; | |
1696 | } | |
1697 | else | |
1698 | { | |
f888a3fb | 1699 | /* Global declaration, e.g. intrinsic subroutine. */ |
4ee9c684 | 1700 | DECL_CONTEXT (fndecl) = NULL_TREE; |
1701 | } | |
1702 | ||
4ee9c684 | 1703 | /* Set attributes for PURE functions. A call to PURE function in the |
1704 | Fortran 95 sense is both pure and without side effects in the C | |
1705 | sense. */ | |
1706 | if (sym->attr.pure || sym->attr.elemental) | |
1707 | { | |
4d4b9f0e | 1708 | if (sym->attr.function && !gfc_return_by_reference (sym)) |
9c2a0c05 | 1709 | DECL_PURE_P (fndecl) = 1; |
be393645 | 1710 | /* TODO: check if pure SUBROUTINEs don't have INTENT(OUT) |
1711 | parameters and don't use alternate returns (is this | |
1712 | allowed?). In that case, calls to them are meaningless, and | |
1b716045 | 1713 | can be optimized away. See also in build_function_decl(). */ |
be393645 | 1714 | TREE_SIDE_EFFECTS (fndecl) = 0; |
4ee9c684 | 1715 | } |
1716 | ||
6e27d773 | 1717 | /* Mark non-returning functions. */ |
1718 | if (sym->attr.noreturn) | |
1719 | TREE_THIS_VOLATILE(fndecl) = 1; | |
1720 | ||
4ee9c684 | 1721 | sym->backend_decl = fndecl; |
1722 | ||
1723 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1724 | pushdecl_top_level (fndecl); | |
1725 | ||
1726 | return fndecl; | |
1727 | } | |
1728 | ||
1729 | ||
1730 | /* Create a declaration for a procedure. For external functions (in the C | |
1b716045 | 1731 | sense) use gfc_get_extern_function_decl. HAS_ENTRIES is true if this is |
1732 | a master function with alternate entry points. */ | |
4ee9c684 | 1733 | |
1b716045 | 1734 | static void |
d896f9b3 | 1735 | build_function_decl (gfc_symbol * sym, bool global) |
4ee9c684 | 1736 | { |
36b0a1b0 | 1737 | tree fndecl, type, attributes; |
4ee9c684 | 1738 | symbol_attribute attr; |
1b716045 | 1739 | tree result_decl; |
4ee9c684 | 1740 | gfc_formal_arglist *f; |
1741 | ||
22d678e8 | 1742 | gcc_assert (!sym->attr.external); |
4ee9c684 | 1743 | |
802532b9 | 1744 | if (sym->backend_decl) |
1745 | return; | |
1746 | ||
b31f705b | 1747 | /* Set the line and filename. sym->declared_at seems to point to the |
1748 | last statement for subroutines, but it'll do for now. */ | |
1749 | gfc_set_backend_locus (&sym->declared_at); | |
1750 | ||
4ee9c684 | 1751 | /* Allow only one nesting level. Allow public declarations. */ |
22d678e8 | 1752 | gcc_assert (current_function_decl == NULL_TREE |
16a40513 | 1753 | || DECL_FILE_SCOPE_P (current_function_decl) |
1754 | || (TREE_CODE (DECL_CONTEXT (current_function_decl)) | |
1755 | == NAMESPACE_DECL)); | |
4ee9c684 | 1756 | |
1757 | type = gfc_get_function_type (sym); | |
e60a6f7b | 1758 | fndecl = build_decl (input_location, |
1759 | FUNCTION_DECL, gfc_sym_identifier (sym), type); | |
4ee9c684 | 1760 | |
1236e28b | 1761 | attr = sym->attr; |
1762 | ||
e27454ee | 1763 | /* Initialize DECL_EXTERNAL and TREE_PUBLIC before calling decl_attributes; |
1764 | TREE_PUBLIC specifies whether a function is globally addressable (i.e. | |
851d9296 | 1765 | the opposite of declaring a function as static in C). */ |
e27454ee | 1766 | DECL_EXTERNAL (fndecl) = 0; |
1767 | ||
1768 | if (!current_function_decl | |
1769 | && !sym->attr.entry_master && !sym->attr.is_main_program) | |
1770 | TREE_PUBLIC (fndecl) = 1; | |
1771 | ||
1236e28b | 1772 | attributes = add_attributes_to_decl (attr, NULL_TREE); |
1773 | decl_attributes (&fndecl, attributes, 0); | |
1774 | ||
4ee9c684 | 1775 | /* Figure out the return type of the declared function, and build a |
f888a3fb | 1776 | RESULT_DECL for it. If this is a subroutine with alternate |
4ee9c684 | 1777 | returns, build a RESULT_DECL for it. */ |
4ee9c684 | 1778 | result_decl = NULL_TREE; |
1779 | /* TODO: Shouldn't this just be TREE_TYPE (TREE_TYPE (fndecl)). */ | |
1780 | if (attr.function) | |
1781 | { | |
1782 | if (gfc_return_by_reference (sym)) | |
1783 | type = void_type_node; | |
1784 | else | |
1785 | { | |
1786 | if (sym->result != sym) | |
1787 | result_decl = gfc_sym_identifier (sym->result); | |
1788 | ||
1789 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
1790 | } | |
1791 | } | |
1792 | else | |
1793 | { | |
1794 | /* Look for alternate return placeholders. */ | |
1795 | int has_alternate_returns = 0; | |
1796 | for (f = sym->formal; f; f = f->next) | |
1797 | { | |
1798 | if (f->sym == NULL) | |
1799 | { | |
1800 | has_alternate_returns = 1; | |
1801 | break; | |
1802 | } | |
1803 | } | |
1804 | ||
1805 | if (has_alternate_returns) | |
1806 | type = integer_type_node; | |
1807 | else | |
1808 | type = void_type_node; | |
1809 | } | |
1810 | ||
e60a6f7b | 1811 | result_decl = build_decl (input_location, |
1812 | RESULT_DECL, result_decl, type); | |
540edea7 | 1813 | DECL_ARTIFICIAL (result_decl) = 1; |
1814 | DECL_IGNORED_P (result_decl) = 1; | |
4ee9c684 | 1815 | DECL_CONTEXT (result_decl) = fndecl; |
1816 | DECL_RESULT (fndecl) = result_decl; | |
1817 | ||
1818 | /* Don't call layout_decl for a RESULT_DECL. | |
f888a3fb | 1819 | layout_decl (result_decl, 0); */ |
4ee9c684 | 1820 | |
4ee9c684 | 1821 | /* TREE_STATIC means the function body is defined here. */ |
e4b2c26c | 1822 | TREE_STATIC (fndecl) = 1; |
4ee9c684 | 1823 | |
f888a3fb | 1824 | /* Set attributes for PURE functions. A call to a PURE function in the |
4ee9c684 | 1825 | Fortran 95 sense is both pure and without side effects in the C |
1826 | sense. */ | |
1827 | if (attr.pure || attr.elemental) | |
1828 | { | |
be393645 | 1829 | /* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments |
a0527218 | 1830 | including an alternate return. In that case it can also be |
231e961a | 1831 | marked as PURE. See also in gfc_get_extern_function_decl(). */ |
4c319962 | 1832 | if (attr.function && !gfc_return_by_reference (sym)) |
9c2a0c05 | 1833 | DECL_PURE_P (fndecl) = 1; |
4ee9c684 | 1834 | TREE_SIDE_EFFECTS (fndecl) = 0; |
1835 | } | |
1836 | ||
36b0a1b0 | 1837 | |
4ee9c684 | 1838 | /* Layout the function declaration and put it in the binding level |
1839 | of the current function. */ | |
d896f9b3 | 1840 | |
1841 | if (global) | |
1842 | pushdecl_top_level (fndecl); | |
1843 | else | |
1844 | pushdecl (fndecl); | |
1b716045 | 1845 | |
16a40513 | 1846 | /* Perform name mangling if this is a top level or module procedure. */ |
1847 | if (current_function_decl == NULL_TREE) | |
1848 | gfc_set_decl_assembler_name (fndecl, gfc_sym_mangled_function_id (sym)); | |
1849 | ||
1b716045 | 1850 | sym->backend_decl = fndecl; |
1851 | } | |
1852 | ||
1853 | ||
1854 | /* Create the DECL_ARGUMENTS for a procedure. */ | |
1855 | ||
1856 | static void | |
1857 | create_function_arglist (gfc_symbol * sym) | |
1858 | { | |
1859 | tree fndecl; | |
1860 | gfc_formal_arglist *f; | |
d4163395 | 1861 | tree typelist, hidden_typelist; |
1862 | tree arglist, hidden_arglist; | |
1b716045 | 1863 | tree type; |
1864 | tree parm; | |
1865 | ||
1866 | fndecl = sym->backend_decl; | |
1867 | ||
e4b2c26c | 1868 | /* Build formal argument list. Make sure that their TREE_CONTEXT is |
1869 | the new FUNCTION_DECL node. */ | |
e4b2c26c | 1870 | arglist = NULL_TREE; |
d4163395 | 1871 | hidden_arglist = NULL_TREE; |
e4b2c26c | 1872 | typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
1b716045 | 1873 | |
1874 | if (sym->attr.entry_master) | |
1875 | { | |
1876 | type = TREE_VALUE (typelist); | |
e60a6f7b | 1877 | parm = build_decl (input_location, |
1878 | PARM_DECL, get_identifier ("__entry"), type); | |
1b716045 | 1879 | |
1880 | DECL_CONTEXT (parm) = fndecl; | |
1881 | DECL_ARG_TYPE (parm) = type; | |
1882 | TREE_READONLY (parm) = 1; | |
b9c7fce7 | 1883 | gfc_finish_decl (parm); |
d95efb59 | 1884 | DECL_ARTIFICIAL (parm) = 1; |
1b716045 | 1885 | |
1886 | arglist = chainon (arglist, parm); | |
1887 | typelist = TREE_CHAIN (typelist); | |
1888 | } | |
1889 | ||
e4b2c26c | 1890 | if (gfc_return_by_reference (sym)) |
4ee9c684 | 1891 | { |
d4163395 | 1892 | tree type = TREE_VALUE (typelist), length = NULL; |
4ee9c684 | 1893 | |
e4b2c26c | 1894 | if (sym->ts.type == BT_CHARACTER) |
1895 | { | |
e4b2c26c | 1896 | /* Length of character result. */ |
d4163395 | 1897 | tree len_type = TREE_VALUE (TREE_CHAIN (typelist)); |
4ee9c684 | 1898 | |
e60a6f7b | 1899 | length = build_decl (input_location, |
1900 | PARM_DECL, | |
e4b2c26c | 1901 | get_identifier (".__result"), |
d4163395 | 1902 | len_type); |
eeebe20b | 1903 | if (!sym->ts.u.cl->length) |
e4b2c26c | 1904 | { |
eeebe20b | 1905 | sym->ts.u.cl->backend_decl = length; |
e4b2c26c | 1906 | TREE_USED (length) = 1; |
4ee9c684 | 1907 | } |
22d678e8 | 1908 | gcc_assert (TREE_CODE (length) == PARM_DECL); |
e4b2c26c | 1909 | DECL_CONTEXT (length) = fndecl; |
d4163395 | 1910 | DECL_ARG_TYPE (length) = len_type; |
e4b2c26c | 1911 | TREE_READONLY (length) = 1; |
b5b40b3f | 1912 | DECL_ARTIFICIAL (length) = 1; |
b9c7fce7 | 1913 | gfc_finish_decl (length); |
eeebe20b | 1914 | if (sym->ts.u.cl->backend_decl == NULL |
1915 | || sym->ts.u.cl->backend_decl == length) | |
d4163395 | 1916 | { |
1917 | gfc_symbol *arg; | |
1918 | tree backend_decl; | |
4ee9c684 | 1919 | |
eeebe20b | 1920 | if (sym->ts.u.cl->backend_decl == NULL) |
d4163395 | 1921 | { |
e60a6f7b | 1922 | tree len = build_decl (input_location, |
1923 | VAR_DECL, | |
d4163395 | 1924 | get_identifier ("..__result"), |
1925 | gfc_charlen_type_node); | |
1926 | DECL_ARTIFICIAL (len) = 1; | |
1927 | TREE_USED (len) = 1; | |
eeebe20b | 1928 | sym->ts.u.cl->backend_decl = len; |
d4163395 | 1929 | } |
4ee9c684 | 1930 | |
d4163395 | 1931 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ |
1932 | arg = sym->result ? sym->result : sym; | |
1933 | backend_decl = arg->backend_decl; | |
1934 | /* Temporary clear it, so that gfc_sym_type creates complete | |
1935 | type. */ | |
1936 | arg->backend_decl = NULL; | |
1937 | type = gfc_sym_type (arg); | |
1938 | arg->backend_decl = backend_decl; | |
1939 | type = build_reference_type (type); | |
1940 | } | |
1941 | } | |
4ee9c684 | 1942 | |
e60a6f7b | 1943 | parm = build_decl (input_location, |
1944 | PARM_DECL, get_identifier ("__result"), type); | |
4ee9c684 | 1945 | |
d4163395 | 1946 | DECL_CONTEXT (parm) = fndecl; |
1947 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
1948 | TREE_READONLY (parm) = 1; | |
1949 | DECL_ARTIFICIAL (parm) = 1; | |
b9c7fce7 | 1950 | gfc_finish_decl (parm); |
4ee9c684 | 1951 | |
d4163395 | 1952 | arglist = chainon (arglist, parm); |
1953 | typelist = TREE_CHAIN (typelist); | |
4ee9c684 | 1954 | |
d4163395 | 1955 | if (sym->ts.type == BT_CHARACTER) |
1956 | { | |
1957 | gfc_allocate_lang_decl (parm); | |
1958 | arglist = chainon (arglist, length); | |
e4b2c26c | 1959 | typelist = TREE_CHAIN (typelist); |
1960 | } | |
1961 | } | |
4ee9c684 | 1962 | |
d4163395 | 1963 | hidden_typelist = typelist; |
1964 | for (f = sym->formal; f; f = f->next) | |
1965 | if (f->sym != NULL) /* Ignore alternate returns. */ | |
1966 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
1967 | ||
e4b2c26c | 1968 | for (f = sym->formal; f; f = f->next) |
1969 | { | |
1970 | char name[GFC_MAX_SYMBOL_LEN + 2]; | |
d4163395 | 1971 | |
e4b2c26c | 1972 | /* Ignore alternate returns. */ |
1973 | if (f->sym == NULL) | |
1974 | continue; | |
4ee9c684 | 1975 | |
e4b2c26c | 1976 | type = TREE_VALUE (typelist); |
4ee9c684 | 1977 | |
296db1d1 | 1978 | if (f->sym->ts.type == BT_CHARACTER |
1979 | && (!sym->attr.is_bind_c || sym->attr.entry_master)) | |
d4163395 | 1980 | { |
1981 | tree len_type = TREE_VALUE (hidden_typelist); | |
1982 | tree length = NULL_TREE; | |
617125a6 | 1983 | if (!f->sym->ts.deferred) |
1984 | gcc_assert (len_type == gfc_charlen_type_node); | |
1985 | else | |
1986 | gcc_assert (POINTER_TYPE_P (len_type)); | |
d4163395 | 1987 | |
1988 | strcpy (&name[1], f->sym->name); | |
1989 | name[0] = '_'; | |
e60a6f7b | 1990 | length = build_decl (input_location, |
1991 | PARM_DECL, get_identifier (name), len_type); | |
4ee9c684 | 1992 | |
d4163395 | 1993 | hidden_arglist = chainon (hidden_arglist, length); |
1994 | DECL_CONTEXT (length) = fndecl; | |
1995 | DECL_ARTIFICIAL (length) = 1; | |
1996 | DECL_ARG_TYPE (length) = len_type; | |
1997 | TREE_READONLY (length) = 1; | |
b9c7fce7 | 1998 | gfc_finish_decl (length); |
4ee9c684 | 1999 | |
a4abf8a0 | 2000 | /* Remember the passed value. */ |
eeebe20b | 2001 | if (f->sym->ts.u.cl->passed_length != NULL) |
6be7c32c | 2002 | { |
2003 | /* This can happen if the same type is used for multiple | |
2004 | arguments. We need to copy cl as otherwise | |
2005 | cl->passed_length gets overwritten. */ | |
d270ce52 | 2006 | f->sym->ts.u.cl = gfc_new_charlen (f->sym->ns, f->sym->ts.u.cl); |
6be7c32c | 2007 | } |
eeebe20b | 2008 | f->sym->ts.u.cl->passed_length = length; |
4ee9c684 | 2009 | |
d4163395 | 2010 | /* Use the passed value for assumed length variables. */ |
eeebe20b | 2011 | if (!f->sym->ts.u.cl->length) |
4ee9c684 | 2012 | { |
d4163395 | 2013 | TREE_USED (length) = 1; |
eeebe20b | 2014 | gcc_assert (!f->sym->ts.u.cl->backend_decl); |
2015 | f->sym->ts.u.cl->backend_decl = length; | |
d4163395 | 2016 | } |
2017 | ||
2018 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
2019 | ||
eeebe20b | 2020 | if (f->sym->ts.u.cl->backend_decl == NULL |
2021 | || f->sym->ts.u.cl->backend_decl == length) | |
d4163395 | 2022 | { |
eeebe20b | 2023 | if (f->sym->ts.u.cl->backend_decl == NULL) |
d4163395 | 2024 | gfc_create_string_length (f->sym); |
2025 | ||
2026 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ | |
2027 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
2028 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2029 | else | |
2030 | type = gfc_sym_type (f->sym); | |
4ee9c684 | 2031 | } |
4ee9c684 | 2032 | } |
2033 | ||
d4163395 | 2034 | /* For non-constant length array arguments, make sure they use |
2035 | a different type node from TYPE_ARG_TYPES type. */ | |
2036 | if (f->sym->attr.dimension | |
2037 | && type == TREE_VALUE (typelist) | |
2038 | && TREE_CODE (type) == POINTER_TYPE | |
2039 | && GFC_ARRAY_TYPE_P (type) | |
2040 | && f->sym->as->type != AS_ASSUMED_SIZE | |
2041 | && ! COMPLETE_TYPE_P (TREE_TYPE (type))) | |
2042 | { | |
2043 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
2044 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
2045 | else | |
2046 | type = gfc_sym_type (f->sym); | |
2047 | } | |
2048 | ||
cad0ddcf | 2049 | if (f->sym->attr.proc_pointer) |
2050 | type = build_pointer_type (type); | |
2051 | ||
2364aa60 | 2052 | if (f->sym->attr.volatile_) |
2053 | type = build_qualified_type (type, TYPE_QUAL_VOLATILE); | |
2054 | ||
69b1505f | 2055 | /* Build the argument declaration. */ |
e60a6f7b | 2056 | parm = build_decl (input_location, |
2057 | PARM_DECL, gfc_sym_identifier (f->sym), type); | |
d4163395 | 2058 | |
2364aa60 | 2059 | if (f->sym->attr.volatile_) |
2060 | { | |
2061 | TREE_THIS_VOLATILE (parm) = 1; | |
2062 | TREE_SIDE_EFFECTS (parm) = 1; | |
2063 | } | |
2064 | ||
d4163395 | 2065 | /* Fill in arg stuff. */ |
2066 | DECL_CONTEXT (parm) = fndecl; | |
2067 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
2068 | /* All implementation args are read-only. */ | |
2069 | TREE_READONLY (parm) = 1; | |
98923a84 | 2070 | if (POINTER_TYPE_P (type) |
2071 | && (!f->sym->attr.proc_pointer | |
2072 | && f->sym->attr.flavor != FL_PROCEDURE)) | |
2073 | DECL_BY_REFERENCE (parm) = 1; | |
d4163395 | 2074 | |
b9c7fce7 | 2075 | gfc_finish_decl (parm); |
d4163395 | 2076 | |
2077 | f->sym->backend_decl = parm; | |
2078 | ||
2079 | arglist = chainon (arglist, parm); | |
e4b2c26c | 2080 | typelist = TREE_CHAIN (typelist); |
4ee9c684 | 2081 | } |
e4b2c26c | 2082 | |
465e4a95 | 2083 | /* Add the hidden string length parameters, unless the procedure |
2084 | is bind(C). */ | |
2085 | if (!sym->attr.is_bind_c) | |
2086 | arglist = chainon (arglist, hidden_arglist); | |
d4163395 | 2087 | |
ebe27ea2 | 2088 | gcc_assert (hidden_typelist == NULL_TREE |
2089 | || TREE_VALUE (hidden_typelist) == void_type_node); | |
e4b2c26c | 2090 | DECL_ARGUMENTS (fndecl) = arglist; |
1b716045 | 2091 | } |
e4b2c26c | 2092 | |
1b716045 | 2093 | /* Do the setup necessary before generating the body of a function. */ |
2094 | ||
2095 | static void | |
2096 | trans_function_start (gfc_symbol * sym) | |
2097 | { | |
2098 | tree fndecl; | |
2099 | ||
2100 | fndecl = sym->backend_decl; | |
2101 | ||
f888a3fb | 2102 | /* Let GCC know the current scope is this function. */ |
1b716045 | 2103 | current_function_decl = fndecl; |
2104 | ||
f888a3fb | 2105 | /* Let the world know what we're about to do. */ |
1b716045 | 2106 | announce_function (fndecl); |
2107 | ||
16a40513 | 2108 | if (DECL_FILE_SCOPE_P (fndecl)) |
1b716045 | 2109 | { |
f888a3fb | 2110 | /* Create RTL for function declaration. */ |
1b716045 | 2111 | rest_of_decl_compilation (fndecl, 1, 0); |
2112 | } | |
2113 | ||
f888a3fb | 2114 | /* Create RTL for function definition. */ |
1b716045 | 2115 | make_decl_rtl (fndecl); |
2116 | ||
1b716045 | 2117 | init_function_start (fndecl); |
2118 | ||
2119 | /* Even though we're inside a function body, we still don't want to | |
2120 | call expand_expr to calculate the size of a variable-sized array. | |
2121 | We haven't necessarily assigned RTL to all variables yet, so it's | |
2122 | not safe to try to expand expressions involving them. */ | |
18d50ae6 | 2123 | cfun->dont_save_pending_sizes_p = 1; |
1b716045 | 2124 | |
f888a3fb | 2125 | /* function.c requires a push at the start of the function. */ |
1b716045 | 2126 | pushlevel (0); |
2127 | } | |
2128 | ||
2129 | /* Create thunks for alternate entry points. */ | |
2130 | ||
2131 | static void | |
d896f9b3 | 2132 | build_entry_thunks (gfc_namespace * ns, bool global) |
1b716045 | 2133 | { |
2134 | gfc_formal_arglist *formal; | |
2135 | gfc_formal_arglist *thunk_formal; | |
2136 | gfc_entry_list *el; | |
2137 | gfc_symbol *thunk_sym; | |
2138 | stmtblock_t body; | |
2139 | tree thunk_fndecl; | |
1b716045 | 2140 | tree tmp; |
b31f705b | 2141 | locus old_loc; |
1b716045 | 2142 | |
2143 | /* This should always be a toplevel function. */ | |
22d678e8 | 2144 | gcc_assert (current_function_decl == NULL_TREE); |
1b716045 | 2145 | |
4671339c | 2146 | gfc_save_backend_locus (&old_loc); |
1b716045 | 2147 | for (el = ns->entries; el; el = el->next) |
2148 | { | |
414c3a2c | 2149 | VEC(tree,gc) *args = NULL; |
2150 | VEC(tree,gc) *string_args = NULL; | |
2151 | ||
1b716045 | 2152 | thunk_sym = el->sym; |
2153 | ||
d896f9b3 | 2154 | build_function_decl (thunk_sym, global); |
1b716045 | 2155 | create_function_arglist (thunk_sym); |
2156 | ||
2157 | trans_function_start (thunk_sym); | |
2158 | ||
2159 | thunk_fndecl = thunk_sym->backend_decl; | |
2160 | ||
e5004242 | 2161 | gfc_init_block (&body); |
1b716045 | 2162 | |
f888a3fb | 2163 | /* Pass extra parameter identifying this entry point. */ |
7016c612 | 2164 | tmp = build_int_cst (gfc_array_index_type, el->id); |
414c3a2c | 2165 | VEC_safe_push (tree, gc, args, tmp); |
1b716045 | 2166 | |
c6871095 | 2167 | if (thunk_sym->attr.function) |
2168 | { | |
2169 | if (gfc_return_by_reference (ns->proc_name)) | |
2170 | { | |
2171 | tree ref = DECL_ARGUMENTS (current_function_decl); | |
414c3a2c | 2172 | VEC_safe_push (tree, gc, args, ref); |
c6871095 | 2173 | if (ns->proc_name->ts.type == BT_CHARACTER) |
1767a056 | 2174 | VEC_safe_push (tree, gc, args, DECL_CHAIN (ref)); |
c6871095 | 2175 | } |
2176 | } | |
2177 | ||
1b716045 | 2178 | for (formal = ns->proc_name->formal; formal; formal = formal->next) |
2179 | { | |
c6871095 | 2180 | /* Ignore alternate returns. */ |
2181 | if (formal->sym == NULL) | |
2182 | continue; | |
2183 | ||
1b716045 | 2184 | /* We don't have a clever way of identifying arguments, so resort to |
2185 | a brute-force search. */ | |
2186 | for (thunk_formal = thunk_sym->formal; | |
2187 | thunk_formal; | |
2188 | thunk_formal = thunk_formal->next) | |
2189 | { | |
2190 | if (thunk_formal->sym == formal->sym) | |
2191 | break; | |
2192 | } | |
2193 | ||
2194 | if (thunk_formal) | |
2195 | { | |
2196 | /* Pass the argument. */ | |
d95efb59 | 2197 | DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1; |
414c3a2c | 2198 | VEC_safe_push (tree, gc, args, thunk_formal->sym->backend_decl); |
1b716045 | 2199 | if (formal->sym->ts.type == BT_CHARACTER) |
2200 | { | |
eeebe20b | 2201 | tmp = thunk_formal->sym->ts.u.cl->backend_decl; |
414c3a2c | 2202 | VEC_safe_push (tree, gc, string_args, tmp); |
1b716045 | 2203 | } |
2204 | } | |
2205 | else | |
2206 | { | |
2207 | /* Pass NULL for a missing argument. */ | |
414c3a2c | 2208 | VEC_safe_push (tree, gc, args, null_pointer_node); |
1b716045 | 2209 | if (formal->sym->ts.type == BT_CHARACTER) |
2210 | { | |
7d3075f6 | 2211 | tmp = build_int_cst (gfc_charlen_type_node, 0); |
414c3a2c | 2212 | VEC_safe_push (tree, gc, string_args, tmp); |
1b716045 | 2213 | } |
2214 | } | |
2215 | } | |
2216 | ||
2217 | /* Call the master function. */ | |
414c3a2c | 2218 | VEC_safe_splice (tree, gc, args, string_args); |
1b716045 | 2219 | tmp = ns->proc_name->backend_decl; |
414c3a2c | 2220 | tmp = build_call_expr_loc_vec (input_location, tmp, args); |
c6871095 | 2221 | if (ns->proc_name->attr.mixed_entry_master) |
2222 | { | |
2223 | tree union_decl, field; | |
2224 | tree master_type = TREE_TYPE (ns->proc_name->backend_decl); | |
2225 | ||
e60a6f7b | 2226 | union_decl = build_decl (input_location, |
2227 | VAR_DECL, get_identifier ("__result"), | |
c6871095 | 2228 | TREE_TYPE (master_type)); |
2229 | DECL_ARTIFICIAL (union_decl) = 1; | |
2230 | DECL_EXTERNAL (union_decl) = 0; | |
2231 | TREE_PUBLIC (union_decl) = 0; | |
2232 | TREE_USED (union_decl) = 1; | |
2233 | layout_decl (union_decl, 0); | |
2234 | pushdecl (union_decl); | |
2235 | ||
2236 | DECL_CONTEXT (union_decl) = current_function_decl; | |
fd779e1d | 2237 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
2238 | TREE_TYPE (union_decl), union_decl, tmp); | |
c6871095 | 2239 | gfc_add_expr_to_block (&body, tmp); |
2240 | ||
2241 | for (field = TYPE_FIELDS (TREE_TYPE (union_decl)); | |
1767a056 | 2242 | field; field = DECL_CHAIN (field)) |
c6871095 | 2243 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2244 | thunk_sym->result->name) == 0) | |
2245 | break; | |
2246 | gcc_assert (field != NULL_TREE); | |
fd779e1d | 2247 | tmp = fold_build3_loc (input_location, COMPONENT_REF, |
2248 | TREE_TYPE (field), union_decl, field, | |
2249 | NULL_TREE); | |
2250 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
f75d6b8a | 2251 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2252 | DECL_RESULT (current_function_decl), tmp); | |
c6871095 | 2253 | tmp = build1_v (RETURN_EXPR, tmp); |
2254 | } | |
2255 | else if (TREE_TYPE (DECL_RESULT (current_function_decl)) | |
2256 | != void_type_node) | |
2257 | { | |
fd779e1d | 2258 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
f75d6b8a | 2259 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2260 | DECL_RESULT (current_function_decl), tmp); | |
c6871095 | 2261 | tmp = build1_v (RETURN_EXPR, tmp); |
2262 | } | |
1b716045 | 2263 | gfc_add_expr_to_block (&body, tmp); |
2264 | ||
2265 | /* Finish off this function and send it for code generation. */ | |
2266 | DECL_SAVED_TREE (thunk_fndecl) = gfc_finish_block (&body); | |
e5004242 | 2267 | tmp = getdecls (); |
1b716045 | 2268 | poplevel (1, 0, 1); |
2269 | BLOCK_SUPERCONTEXT (DECL_INITIAL (thunk_fndecl)) = thunk_fndecl; | |
e5004242 | 2270 | DECL_SAVED_TREE (thunk_fndecl) |
2271 | = build3_v (BIND_EXPR, tmp, DECL_SAVED_TREE (thunk_fndecl), | |
2272 | DECL_INITIAL (thunk_fndecl)); | |
1b716045 | 2273 | |
2274 | /* Output the GENERIC tree. */ | |
2275 | dump_function (TDI_original, thunk_fndecl); | |
2276 | ||
2277 | /* Store the end of the function, so that we get good line number | |
2278 | info for the epilogue. */ | |
2279 | cfun->function_end_locus = input_location; | |
2280 | ||
2281 | /* We're leaving the context of this function, so zap cfun. | |
2282 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
2283 | tree_rest_of_compilation. */ | |
87d4aa85 | 2284 | set_cfun (NULL); |
1b716045 | 2285 | |
2286 | current_function_decl = NULL_TREE; | |
2287 | ||
bb982f66 | 2288 | cgraph_finalize_function (thunk_fndecl, true); |
1b716045 | 2289 | |
2290 | /* We share the symbols in the formal argument list with other entry | |
2291 | points and the master function. Clear them so that they are | |
2292 | recreated for each function. */ | |
2293 | for (formal = thunk_sym->formal; formal; formal = formal->next) | |
c6871095 | 2294 | if (formal->sym != NULL) /* Ignore alternate returns. */ |
2295 | { | |
2296 | formal->sym->backend_decl = NULL_TREE; | |
2297 | if (formal->sym->ts.type == BT_CHARACTER) | |
eeebe20b | 2298 | formal->sym->ts.u.cl->backend_decl = NULL_TREE; |
c6871095 | 2299 | } |
2300 | ||
2301 | if (thunk_sym->attr.function) | |
1b716045 | 2302 | { |
c6871095 | 2303 | if (thunk_sym->ts.type == BT_CHARACTER) |
eeebe20b | 2304 | thunk_sym->ts.u.cl->backend_decl = NULL_TREE; |
c6871095 | 2305 | if (thunk_sym->result->ts.type == BT_CHARACTER) |
eeebe20b | 2306 | thunk_sym->result->ts.u.cl->backend_decl = NULL_TREE; |
1b716045 | 2307 | } |
2308 | } | |
b31f705b | 2309 | |
4671339c | 2310 | gfc_restore_backend_locus (&old_loc); |
1b716045 | 2311 | } |
2312 | ||
2313 | ||
2314 | /* Create a decl for a function, and create any thunks for alternate entry | |
d896f9b3 | 2315 | points. If global is true, generate the function in the global binding |
2316 | level, otherwise in the current binding level (which can be global). */ | |
1b716045 | 2317 | |
2318 | void | |
d896f9b3 | 2319 | gfc_create_function_decl (gfc_namespace * ns, bool global) |
1b716045 | 2320 | { |
2321 | /* Create a declaration for the master function. */ | |
d896f9b3 | 2322 | build_function_decl (ns->proc_name, global); |
1b716045 | 2323 | |
f888a3fb | 2324 | /* Compile the entry thunks. */ |
1b716045 | 2325 | if (ns->entries) |
d896f9b3 | 2326 | build_entry_thunks (ns, global); |
1b716045 | 2327 | |
2328 | /* Now create the read argument list. */ | |
2329 | create_function_arglist (ns->proc_name); | |
2330 | } | |
2331 | ||
c750cc52 | 2332 | /* Return the decl used to hold the function return value. If |
3350e716 | 2333 | parent_flag is set, the context is the parent_scope. */ |
4ee9c684 | 2334 | |
2335 | tree | |
c750cc52 | 2336 | gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag) |
4ee9c684 | 2337 | { |
c750cc52 | 2338 | tree decl; |
2339 | tree length; | |
2340 | tree this_fake_result_decl; | |
2341 | tree this_function_decl; | |
4ee9c684 | 2342 | |
2343 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
2344 | ||
c750cc52 | 2345 | if (parent_flag) |
2346 | { | |
2347 | this_fake_result_decl = parent_fake_result_decl; | |
2348 | this_function_decl = DECL_CONTEXT (current_function_decl); | |
2349 | } | |
2350 | else | |
2351 | { | |
2352 | this_fake_result_decl = current_fake_result_decl; | |
2353 | this_function_decl = current_function_decl; | |
2354 | } | |
2355 | ||
c6871095 | 2356 | if (sym |
c750cc52 | 2357 | && sym->ns->proc_name->backend_decl == this_function_decl |
d4163395 | 2358 | && sym->ns->proc_name->attr.entry_master |
c6871095 | 2359 | && sym != sym->ns->proc_name) |
2360 | { | |
d4163395 | 2361 | tree t = NULL, var; |
c750cc52 | 2362 | if (this_fake_result_decl != NULL) |
2363 | for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t)) | |
d4163395 | 2364 | if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0) |
2365 | break; | |
2366 | if (t) | |
2367 | return TREE_VALUE (t); | |
c750cc52 | 2368 | decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag); |
2369 | ||
2370 | if (parent_flag) | |
2371 | this_fake_result_decl = parent_fake_result_decl; | |
2372 | else | |
2373 | this_fake_result_decl = current_fake_result_decl; | |
2374 | ||
d4163395 | 2375 | if (decl && sym->ns->proc_name->attr.mixed_entry_master) |
c6871095 | 2376 | { |
2377 | tree field; | |
2378 | ||
2379 | for (field = TYPE_FIELDS (TREE_TYPE (decl)); | |
1767a056 | 2380 | field; field = DECL_CHAIN (field)) |
c6871095 | 2381 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2382 | sym->name) == 0) | |
2383 | break; | |
2384 | ||
2385 | gcc_assert (field != NULL_TREE); | |
fd779e1d | 2386 | decl = fold_build3_loc (input_location, COMPONENT_REF, |
2387 | TREE_TYPE (field), decl, field, NULL_TREE); | |
c6871095 | 2388 | } |
c750cc52 | 2389 | |
2390 | var = create_tmp_var_raw (TREE_TYPE (decl), sym->name); | |
2391 | if (parent_flag) | |
2392 | gfc_add_decl_to_parent_function (var); | |
2393 | else | |
2394 | gfc_add_decl_to_function (var); | |
2395 | ||
d4163395 | 2396 | SET_DECL_VALUE_EXPR (var, decl); |
2397 | DECL_HAS_VALUE_EXPR_P (var) = 1; | |
2cf330c4 | 2398 | GFC_DECL_RESULT (var) = 1; |
c750cc52 | 2399 | |
2400 | TREE_CHAIN (this_fake_result_decl) | |
2401 | = tree_cons (get_identifier (sym->name), var, | |
2402 | TREE_CHAIN (this_fake_result_decl)); | |
d4163395 | 2403 | return var; |
c6871095 | 2404 | } |
2405 | ||
c750cc52 | 2406 | if (this_fake_result_decl != NULL_TREE) |
2407 | return TREE_VALUE (this_fake_result_decl); | |
4ee9c684 | 2408 | |
2409 | /* Only when gfc_get_fake_result_decl is called by gfc_trans_return, | |
2410 | sym is NULL. */ | |
2411 | if (!sym) | |
2412 | return NULL_TREE; | |
2413 | ||
d4163395 | 2414 | if (sym->ts.type == BT_CHARACTER) |
4ee9c684 | 2415 | { |
eeebe20b | 2416 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
d4163395 | 2417 | length = gfc_create_string_length (sym); |
2418 | else | |
eeebe20b | 2419 | length = sym->ts.u.cl->backend_decl; |
d4163395 | 2420 | if (TREE_CODE (length) == VAR_DECL |
2421 | && DECL_CONTEXT (length) == NULL_TREE) | |
99042714 | 2422 | gfc_add_decl_to_function (length); |
4ee9c684 | 2423 | } |
2424 | ||
2425 | if (gfc_return_by_reference (sym)) | |
2426 | { | |
c750cc52 | 2427 | decl = DECL_ARGUMENTS (this_function_decl); |
c6871095 | 2428 | |
c750cc52 | 2429 | if (sym->ns->proc_name->backend_decl == this_function_decl |
c6871095 | 2430 | && sym->ns->proc_name->attr.entry_master) |
1767a056 | 2431 | decl = DECL_CHAIN (decl); |
4ee9c684 | 2432 | |
2433 | TREE_USED (decl) = 1; | |
2434 | if (sym->as) | |
2435 | decl = gfc_build_dummy_array_decl (sym, decl); | |
2436 | } | |
2437 | else | |
2438 | { | |
2439 | sprintf (name, "__result_%.20s", | |
c750cc52 | 2440 | IDENTIFIER_POINTER (DECL_NAME (this_function_decl))); |
4ee9c684 | 2441 | |
3350e716 | 2442 | if (!sym->attr.mixed_entry_master && sym->attr.function) |
1e71b314 | 2443 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
e60a6f7b | 2444 | VAR_DECL, get_identifier (name), |
3350e716 | 2445 | gfc_sym_type (sym)); |
2446 | else | |
1e71b314 | 2447 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
e60a6f7b | 2448 | VAR_DECL, get_identifier (name), |
3350e716 | 2449 | TREE_TYPE (TREE_TYPE (this_function_decl))); |
4ee9c684 | 2450 | DECL_ARTIFICIAL (decl) = 1; |
2451 | DECL_EXTERNAL (decl) = 0; | |
2452 | TREE_PUBLIC (decl) = 0; | |
2453 | TREE_USED (decl) = 1; | |
764f1175 | 2454 | GFC_DECL_RESULT (decl) = 1; |
a379e3a9 | 2455 | TREE_ADDRESSABLE (decl) = 1; |
4ee9c684 | 2456 | |
2457 | layout_decl (decl, 0); | |
2458 | ||
c750cc52 | 2459 | if (parent_flag) |
2460 | gfc_add_decl_to_parent_function (decl); | |
2461 | else | |
2462 | gfc_add_decl_to_function (decl); | |
4ee9c684 | 2463 | } |
2464 | ||
c750cc52 | 2465 | if (parent_flag) |
2466 | parent_fake_result_decl = build_tree_list (NULL, decl); | |
2467 | else | |
2468 | current_fake_result_decl = build_tree_list (NULL, decl); | |
4ee9c684 | 2469 | |
2470 | return decl; | |
2471 | } | |
2472 | ||
2473 | ||
2474 | /* Builds a function decl. The remaining parameters are the types of the | |
2475 | function arguments. Negative nargs indicates a varargs function. */ | |
2476 | ||
8ce86007 | 2477 | static tree |
2478 | build_library_function_decl_1 (tree name, const char *spec, | |
2479 | tree rettype, int nargs, va_list p) | |
4ee9c684 | 2480 | { |
2481 | tree arglist; | |
2482 | tree argtype; | |
2483 | tree fntype; | |
2484 | tree fndecl; | |
4ee9c684 | 2485 | int n; |
2486 | ||
2487 | /* Library functions must be declared with global scope. */ | |
22d678e8 | 2488 | gcc_assert (current_function_decl == NULL_TREE); |
4ee9c684 | 2489 | |
4ee9c684 | 2490 | /* Create a list of the argument types. */ |
2491 | for (arglist = NULL_TREE, n = abs (nargs); n > 0; n--) | |
2492 | { | |
2493 | argtype = va_arg (p, tree); | |
2494 | arglist = gfc_chainon_list (arglist, argtype); | |
2495 | } | |
2496 | ||
2497 | if (nargs >= 0) | |
2498 | { | |
2499 | /* Terminate the list. */ | |
571704e8 | 2500 | arglist = chainon (arglist, void_list_node); |
4ee9c684 | 2501 | } |
2502 | ||
2503 | /* Build the function type and decl. */ | |
2504 | fntype = build_function_type (rettype, arglist); | |
8ce86007 | 2505 | if (spec) |
2506 | { | |
2507 | tree attr_args = build_tree_list (NULL_TREE, | |
2508 | build_string (strlen (spec), spec)); | |
2509 | tree attrs = tree_cons (get_identifier ("fn spec"), | |
2510 | attr_args, TYPE_ATTRIBUTES (fntype)); | |
2511 | fntype = build_type_attribute_variant (fntype, attrs); | |
2512 | } | |
e60a6f7b | 2513 | fndecl = build_decl (input_location, |
2514 | FUNCTION_DECL, name, fntype); | |
4ee9c684 | 2515 | |
2516 | /* Mark this decl as external. */ | |
2517 | DECL_EXTERNAL (fndecl) = 1; | |
2518 | TREE_PUBLIC (fndecl) = 1; | |
2519 | ||
4ee9c684 | 2520 | pushdecl (fndecl); |
2521 | ||
b2c4af5e | 2522 | rest_of_decl_compilation (fndecl, 1, 0); |
4ee9c684 | 2523 | |
2524 | return fndecl; | |
2525 | } | |
2526 | ||
8ce86007 | 2527 | /* Builds a function decl. The remaining parameters are the types of the |
2528 | function arguments. Negative nargs indicates a varargs function. */ | |
2529 | ||
2530 | tree | |
2531 | gfc_build_library_function_decl (tree name, tree rettype, int nargs, ...) | |
2532 | { | |
2533 | tree ret; | |
2534 | va_list args; | |
2535 | va_start (args, nargs); | |
2536 | ret = build_library_function_decl_1 (name, NULL, rettype, nargs, args); | |
2537 | va_end (args); | |
2538 | return ret; | |
2539 | } | |
2540 | ||
2541 | /* Builds a function decl. The remaining parameters are the types of the | |
2542 | function arguments. Negative nargs indicates a varargs function. | |
2543 | The SPEC parameter specifies the function argument and return type | |
2544 | specification according to the fnspec function type attribute. */ | |
2545 | ||
4bf69bc3 | 2546 | tree |
8ce86007 | 2547 | gfc_build_library_function_decl_with_spec (tree name, const char *spec, |
2548 | tree rettype, int nargs, ...) | |
2549 | { | |
2550 | tree ret; | |
2551 | va_list args; | |
2552 | va_start (args, nargs); | |
2553 | ret = build_library_function_decl_1 (name, spec, rettype, nargs, args); | |
2554 | va_end (args); | |
2555 | return ret; | |
2556 | } | |
2557 | ||
4ee9c684 | 2558 | static void |
2559 | gfc_build_intrinsic_function_decls (void) | |
2560 | { | |
90ba9145 | 2561 | tree gfc_int4_type_node = gfc_get_int_type (4); |
2562 | tree gfc_int8_type_node = gfc_get_int_type (8); | |
920e54ef | 2563 | tree gfc_int16_type_node = gfc_get_int_type (16); |
90ba9145 | 2564 | tree gfc_logical4_type_node = gfc_get_logical_type (4); |
40b806de | 2565 | tree pchar1_type_node = gfc_get_pchar_type (1); |
2566 | tree pchar4_type_node = gfc_get_pchar_type (4); | |
90ba9145 | 2567 | |
4ee9c684 | 2568 | /* String functions. */ |
241ecdc7 | 2569 | gfor_fndecl_compare_string = gfc_build_library_function_decl_with_spec ( |
2570 | get_identifier (PREFIX("compare_string")), "..R.R", | |
2571 | integer_type_node, 4, gfc_charlen_type_node, pchar1_type_node, | |
2572 | gfc_charlen_type_node, pchar1_type_node); | |
537824d1 | 2573 | DECL_PURE_P (gfor_fndecl_compare_string) = 1; |
bc351485 | 2574 | TREE_NOTHROW (gfor_fndecl_compare_string) = 1; |
241ecdc7 | 2575 | |
2576 | gfor_fndecl_concat_string = gfc_build_library_function_decl_with_spec ( | |
2577 | get_identifier (PREFIX("concat_string")), "..W.R.R", | |
2578 | void_type_node, 6, gfc_charlen_type_node, pchar1_type_node, | |
2579 | gfc_charlen_type_node, pchar1_type_node, | |
2580 | gfc_charlen_type_node, pchar1_type_node); | |
bc351485 | 2581 | TREE_NOTHROW (gfor_fndecl_concat_string) = 1; |
241ecdc7 | 2582 | |
2583 | gfor_fndecl_string_len_trim = gfc_build_library_function_decl_with_spec ( | |
2584 | get_identifier (PREFIX("string_len_trim")), "..R", | |
2585 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar1_type_node); | |
537824d1 | 2586 | DECL_PURE_P (gfor_fndecl_string_len_trim) = 1; |
bc351485 | 2587 | TREE_NOTHROW (gfor_fndecl_string_len_trim) = 1; |
241ecdc7 | 2588 | |
2589 | gfor_fndecl_string_index = gfc_build_library_function_decl_with_spec ( | |
2590 | get_identifier (PREFIX("string_index")), "..R.R.", | |
2591 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2592 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2593 | DECL_PURE_P (gfor_fndecl_string_index) = 1; |
bc351485 | 2594 | TREE_NOTHROW (gfor_fndecl_string_index) = 1; |
241ecdc7 | 2595 | |
2596 | gfor_fndecl_string_scan = gfc_build_library_function_decl_with_spec ( | |
2597 | get_identifier (PREFIX("string_scan")), "..R.R.", | |
2598 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2599 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2600 | DECL_PURE_P (gfor_fndecl_string_scan) = 1; |
bc351485 | 2601 | TREE_NOTHROW (gfor_fndecl_string_scan) = 1; |
241ecdc7 | 2602 | |
2603 | gfor_fndecl_string_verify = gfc_build_library_function_decl_with_spec ( | |
2604 | get_identifier (PREFIX("string_verify")), "..R.R.", | |
2605 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2606 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2607 | DECL_PURE_P (gfor_fndecl_string_verify) = 1; |
bc351485 | 2608 | TREE_NOTHROW (gfor_fndecl_string_verify) = 1; |
241ecdc7 | 2609 | |
2610 | gfor_fndecl_string_trim = gfc_build_library_function_decl_with_spec ( | |
2611 | get_identifier (PREFIX("string_trim")), ".Ww.R", | |
2612 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2613 | build_pointer_type (pchar1_type_node), gfc_charlen_type_node, | |
2614 | pchar1_type_node); | |
2615 | ||
2616 | gfor_fndecl_string_minmax = gfc_build_library_function_decl_with_spec ( | |
2617 | get_identifier (PREFIX("string_minmax")), ".Ww.R", | |
2618 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2619 | build_pointer_type (pchar1_type_node), integer_type_node, | |
2620 | integer_type_node); | |
2621 | ||
2622 | gfor_fndecl_adjustl = gfc_build_library_function_decl_with_spec ( | |
2623 | get_identifier (PREFIX("adjustl")), ".W.R", | |
2624 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2625 | pchar1_type_node); | |
bc351485 | 2626 | TREE_NOTHROW (gfor_fndecl_adjustl) = 1; |
241ecdc7 | 2627 | |
2628 | gfor_fndecl_adjustr = gfc_build_library_function_decl_with_spec ( | |
2629 | get_identifier (PREFIX("adjustr")), ".W.R", | |
2630 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2631 | pchar1_type_node); | |
bc351485 | 2632 | TREE_NOTHROW (gfor_fndecl_adjustr) = 1; |
241ecdc7 | 2633 | |
2634 | gfor_fndecl_select_string = gfc_build_library_function_decl_with_spec ( | |
2635 | get_identifier (PREFIX("select_string")), ".R.R.", | |
2636 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2637 | pchar1_type_node, gfc_charlen_type_node); | |
537824d1 | 2638 | DECL_PURE_P (gfor_fndecl_select_string) = 1; |
bc351485 | 2639 | TREE_NOTHROW (gfor_fndecl_select_string) = 1; |
241ecdc7 | 2640 | |
2641 | gfor_fndecl_compare_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2642 | get_identifier (PREFIX("compare_string_char4")), "..R.R", | |
2643 | integer_type_node, 4, gfc_charlen_type_node, pchar4_type_node, | |
2644 | gfc_charlen_type_node, pchar4_type_node); | |
537824d1 | 2645 | DECL_PURE_P (gfor_fndecl_compare_string_char4) = 1; |
bc351485 | 2646 | TREE_NOTHROW (gfor_fndecl_compare_string_char4) = 1; |
241ecdc7 | 2647 | |
2648 | gfor_fndecl_concat_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2649 | get_identifier (PREFIX("concat_string_char4")), "..W.R.R", | |
2650 | void_type_node, 6, gfc_charlen_type_node, pchar4_type_node, | |
2651 | gfc_charlen_type_node, pchar4_type_node, gfc_charlen_type_node, | |
2652 | pchar4_type_node); | |
bc351485 | 2653 | TREE_NOTHROW (gfor_fndecl_concat_string_char4) = 1; |
241ecdc7 | 2654 | |
2655 | gfor_fndecl_string_len_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2656 | get_identifier (PREFIX("string_len_trim_char4")), "..R", | |
2657 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar4_type_node); | |
537824d1 | 2658 | DECL_PURE_P (gfor_fndecl_string_len_trim_char4) = 1; |
bc351485 | 2659 | TREE_NOTHROW (gfor_fndecl_string_len_trim_char4) = 1; |
241ecdc7 | 2660 | |
2661 | gfor_fndecl_string_index_char4 = gfc_build_library_function_decl_with_spec ( | |
2662 | get_identifier (PREFIX("string_index_char4")), "..R.R.", | |
2663 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2664 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2665 | DECL_PURE_P (gfor_fndecl_string_index_char4) = 1; |
bc351485 | 2666 | TREE_NOTHROW (gfor_fndecl_string_index_char4) = 1; |
241ecdc7 | 2667 | |
2668 | gfor_fndecl_string_scan_char4 = gfc_build_library_function_decl_with_spec ( | |
2669 | get_identifier (PREFIX("string_scan_char4")), "..R.R.", | |
2670 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2671 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2672 | DECL_PURE_P (gfor_fndecl_string_scan_char4) = 1; |
bc351485 | 2673 | TREE_NOTHROW (gfor_fndecl_string_scan_char4) = 1; |
241ecdc7 | 2674 | |
2675 | gfor_fndecl_string_verify_char4 = gfc_build_library_function_decl_with_spec ( | |
2676 | get_identifier (PREFIX("string_verify_char4")), "..R.R.", | |
2677 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2678 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2679 | DECL_PURE_P (gfor_fndecl_string_verify_char4) = 1; |
bc351485 | 2680 | TREE_NOTHROW (gfor_fndecl_string_verify_char4) = 1; |
241ecdc7 | 2681 | |
2682 | gfor_fndecl_string_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2683 | get_identifier (PREFIX("string_trim_char4")), ".Ww.R", | |
2684 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2685 | build_pointer_type (pchar4_type_node), gfc_charlen_type_node, | |
2686 | pchar4_type_node); | |
2687 | ||
2688 | gfor_fndecl_string_minmax_char4 = gfc_build_library_function_decl_with_spec ( | |
2689 | get_identifier (PREFIX("string_minmax_char4")), ".Ww.R", | |
2690 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2691 | build_pointer_type (pchar4_type_node), integer_type_node, | |
2692 | integer_type_node); | |
2693 | ||
2694 | gfor_fndecl_adjustl_char4 = gfc_build_library_function_decl_with_spec ( | |
2695 | get_identifier (PREFIX("adjustl_char4")), ".W.R", | |
2696 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2697 | pchar4_type_node); | |
bc351485 | 2698 | TREE_NOTHROW (gfor_fndecl_adjustl_char4) = 1; |
241ecdc7 | 2699 | |
2700 | gfor_fndecl_adjustr_char4 = gfc_build_library_function_decl_with_spec ( | |
2701 | get_identifier (PREFIX("adjustr_char4")), ".W.R", | |
2702 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2703 | pchar4_type_node); | |
bc351485 | 2704 | TREE_NOTHROW (gfor_fndecl_adjustr_char4) = 1; |
241ecdc7 | 2705 | |
2706 | gfor_fndecl_select_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2707 | get_identifier (PREFIX("select_string_char4")), ".R.R.", | |
2708 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2709 | pvoid_type_node, gfc_charlen_type_node); | |
537824d1 | 2710 | DECL_PURE_P (gfor_fndecl_select_string_char4) = 1; |
bc351485 | 2711 | TREE_NOTHROW (gfor_fndecl_select_string_char4) = 1; |
b44437b9 | 2712 | |
2713 | ||
2714 | /* Conversion between character kinds. */ | |
2715 | ||
241ecdc7 | 2716 | gfor_fndecl_convert_char1_to_char4 = gfc_build_library_function_decl_with_spec ( |
2717 | get_identifier (PREFIX("convert_char1_to_char4")), ".w.R", | |
2718 | void_type_node, 3, build_pointer_type (pchar4_type_node), | |
2719 | gfc_charlen_type_node, pchar1_type_node); | |
b44437b9 | 2720 | |
241ecdc7 | 2721 | gfor_fndecl_convert_char4_to_char1 = gfc_build_library_function_decl_with_spec ( |
2722 | get_identifier (PREFIX("convert_char4_to_char1")), ".w.R", | |
2723 | void_type_node, 3, build_pointer_type (pchar1_type_node), | |
2724 | gfc_charlen_type_node, pchar4_type_node); | |
b44437b9 | 2725 | |
40b806de | 2726 | /* Misc. functions. */ |
5fcc6ec2 | 2727 | |
241ecdc7 | 2728 | gfor_fndecl_ttynam = gfc_build_library_function_decl_with_spec ( |
2729 | get_identifier (PREFIX("ttynam")), ".W", | |
2730 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
2731 | integer_type_node); | |
2732 | ||
2733 | gfor_fndecl_fdate = gfc_build_library_function_decl_with_spec ( | |
2734 | get_identifier (PREFIX("fdate")), ".W", | |
2735 | void_type_node, 2, pchar_type_node, gfc_charlen_type_node); | |
2736 | ||
2737 | gfor_fndecl_ctime = gfc_build_library_function_decl_with_spec ( | |
2738 | get_identifier (PREFIX("ctime")), ".W", | |
2739 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
2740 | gfc_int8_type_node); | |
2741 | ||
2742 | gfor_fndecl_sc_kind = gfc_build_library_function_decl_with_spec ( | |
2743 | get_identifier (PREFIX("selected_char_kind")), "..R", | |
2744 | gfc_int4_type_node, 2, gfc_charlen_type_node, pchar_type_node); | |
537824d1 | 2745 | DECL_PURE_P (gfor_fndecl_sc_kind) = 1; |
bc351485 | 2746 | TREE_NOTHROW (gfor_fndecl_sc_kind) = 1; |
241ecdc7 | 2747 | |
2748 | gfor_fndecl_si_kind = gfc_build_library_function_decl_with_spec ( | |
2749 | get_identifier (PREFIX("selected_int_kind")), ".R", | |
2750 | gfc_int4_type_node, 1, pvoid_type_node); | |
537824d1 | 2751 | DECL_PURE_P (gfor_fndecl_si_kind) = 1; |
bc351485 | 2752 | TREE_NOTHROW (gfor_fndecl_si_kind) = 1; |
241ecdc7 | 2753 | |
2754 | gfor_fndecl_sr_kind = gfc_build_library_function_decl_with_spec ( | |
2755 | get_identifier (PREFIX("selected_real_kind2008")), ".RR", | |
2756 | gfc_int4_type_node, 3, pvoid_type_node, pvoid_type_node, | |
2757 | pvoid_type_node); | |
537824d1 | 2758 | DECL_PURE_P (gfor_fndecl_sr_kind) = 1; |
bc351485 | 2759 | TREE_NOTHROW (gfor_fndecl_sr_kind) = 1; |
4ee9c684 | 2760 | |
4ee9c684 | 2761 | /* Power functions. */ |
76834664 | 2762 | { |
920e54ef | 2763 | tree ctype, rtype, itype, jtype; |
2764 | int rkind, ikind, jkind; | |
2765 | #define NIKINDS 3 | |
2766 | #define NRKINDS 4 | |
2767 | static int ikinds[NIKINDS] = {4, 8, 16}; | |
2768 | static int rkinds[NRKINDS] = {4, 8, 10, 16}; | |
2769 | char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */ | |
2770 | ||
2771 | for (ikind=0; ikind < NIKINDS; ikind++) | |
76834664 | 2772 | { |
920e54ef | 2773 | itype = gfc_get_int_type (ikinds[ikind]); |
2774 | ||
2775 | for (jkind=0; jkind < NIKINDS; jkind++) | |
2776 | { | |
2777 | jtype = gfc_get_int_type (ikinds[jkind]); | |
2778 | if (itype && jtype) | |
2779 | { | |
2780 | sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind], | |
2781 | ikinds[jkind]); | |
2782 | gfor_fndecl_math_powi[jkind][ikind].integer = | |
2783 | gfc_build_library_function_decl (get_identifier (name), | |
2784 | jtype, 2, jtype, itype); | |
2177d98b | 2785 | TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
bc351485 | 2786 | TREE_NOTHROW (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
920e54ef | 2787 | } |
2788 | } | |
2789 | ||
2790 | for (rkind = 0; rkind < NRKINDS; rkind ++) | |
76834664 | 2791 | { |
920e54ef | 2792 | rtype = gfc_get_real_type (rkinds[rkind]); |
2793 | if (rtype && itype) | |
2794 | { | |
2795 | sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind], | |
2796 | ikinds[ikind]); | |
2797 | gfor_fndecl_math_powi[rkind][ikind].real = | |
2798 | gfc_build_library_function_decl (get_identifier (name), | |
2799 | rtype, 2, rtype, itype); | |
2177d98b | 2800 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
bc351485 | 2801 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
920e54ef | 2802 | } |
2803 | ||
2804 | ctype = gfc_get_complex_type (rkinds[rkind]); | |
2805 | if (ctype && itype) | |
2806 | { | |
2807 | sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind], | |
2808 | ikinds[ikind]); | |
2809 | gfor_fndecl_math_powi[rkind][ikind].cmplx = | |
2810 | gfc_build_library_function_decl (get_identifier (name), | |
2811 | ctype, 2,ctype, itype); | |
2177d98b | 2812 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
bc351485 | 2813 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
920e54ef | 2814 | } |
76834664 | 2815 | } |
2816 | } | |
920e54ef | 2817 | #undef NIKINDS |
2818 | #undef NRKINDS | |
76834664 | 2819 | } |
2820 | ||
241ecdc7 | 2821 | gfor_fndecl_math_ishftc4 = gfc_build_library_function_decl ( |
2822 | get_identifier (PREFIX("ishftc4")), | |
2823 | gfc_int4_type_node, 3, gfc_int4_type_node, gfc_int4_type_node, | |
2824 | gfc_int4_type_node); | |
bc351485 | 2825 | TREE_READONLY (gfor_fndecl_math_ishftc4) = 1; |
2826 | TREE_NOTHROW (gfor_fndecl_math_ishftc4) = 1; | |
241ecdc7 | 2827 | |
2828 | gfor_fndecl_math_ishftc8 = gfc_build_library_function_decl ( | |
2829 | get_identifier (PREFIX("ishftc8")), | |
2830 | gfc_int8_type_node, 3, gfc_int8_type_node, gfc_int4_type_node, | |
2831 | gfc_int4_type_node); | |
bc351485 | 2832 | TREE_READONLY (gfor_fndecl_math_ishftc8) = 1; |
2833 | TREE_NOTHROW (gfor_fndecl_math_ishftc8) = 1; | |
241ecdc7 | 2834 | |
920e54ef | 2835 | if (gfc_int16_type_node) |
bc351485 | 2836 | { |
2837 | gfor_fndecl_math_ishftc16 = gfc_build_library_function_decl ( | |
241ecdc7 | 2838 | get_identifier (PREFIX("ishftc16")), |
2839 | gfc_int16_type_node, 3, gfc_int16_type_node, gfc_int4_type_node, | |
2840 | gfc_int4_type_node); | |
bc351485 | 2841 | TREE_READONLY (gfor_fndecl_math_ishftc16) = 1; |
2842 | TREE_NOTHROW (gfor_fndecl_math_ishftc16) = 1; | |
2843 | } | |
920e54ef | 2844 | |
4e8e57b0 | 2845 | /* BLAS functions. */ |
2846 | { | |
36c921b9 | 2847 | tree pint = build_pointer_type (integer_type_node); |
4e8e57b0 | 2848 | tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind)); |
2849 | tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind)); | |
2850 | tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind)); | |
2851 | tree pz = build_pointer_type | |
2852 | (gfc_get_complex_type (gfc_default_double_kind)); | |
2853 | ||
2854 | gfor_fndecl_sgemm = gfc_build_library_function_decl | |
2855 | (get_identifier | |
2856 | (gfc_option.flag_underscoring ? "sgemm_" | |
2857 | : "sgemm"), | |
2858 | void_type_node, 15, pchar_type_node, | |
2859 | pchar_type_node, pint, pint, pint, ps, ps, pint, | |
36c921b9 | 2860 | ps, pint, ps, ps, pint, integer_type_node, |
2861 | integer_type_node); | |
4e8e57b0 | 2862 | gfor_fndecl_dgemm = gfc_build_library_function_decl |
2863 | (get_identifier | |
2864 | (gfc_option.flag_underscoring ? "dgemm_" | |
2865 | : "dgemm"), | |
2866 | void_type_node, 15, pchar_type_node, | |
2867 | pchar_type_node, pint, pint, pint, pd, pd, pint, | |
36c921b9 | 2868 | pd, pint, pd, pd, pint, integer_type_node, |
2869 | integer_type_node); | |
4e8e57b0 | 2870 | gfor_fndecl_cgemm = gfc_build_library_function_decl |
2871 | (get_identifier | |
2872 | (gfc_option.flag_underscoring ? "cgemm_" | |
2873 | : "cgemm"), | |
2874 | void_type_node, 15, pchar_type_node, | |
2875 | pchar_type_node, pint, pint, pint, pc, pc, pint, | |
36c921b9 | 2876 | pc, pint, pc, pc, pint, integer_type_node, |
2877 | integer_type_node); | |
4e8e57b0 | 2878 | gfor_fndecl_zgemm = gfc_build_library_function_decl |
2879 | (get_identifier | |
2880 | (gfc_option.flag_underscoring ? "zgemm_" | |
2881 | : "zgemm"), | |
2882 | void_type_node, 15, pchar_type_node, | |
2883 | pchar_type_node, pint, pint, pint, pz, pz, pint, | |
36c921b9 | 2884 | pz, pint, pz, pz, pint, integer_type_node, |
2885 | integer_type_node); | |
4e8e57b0 | 2886 | } |
2887 | ||
4ee9c684 | 2888 | /* Other functions. */ |
241ecdc7 | 2889 | gfor_fndecl_size0 = gfc_build_library_function_decl_with_spec ( |
2890 | get_identifier (PREFIX("size0")), ".R", | |
2891 | gfc_array_index_type, 1, pvoid_type_node); | |
537824d1 | 2892 | DECL_PURE_P (gfor_fndecl_size0) = 1; |
bc351485 | 2893 | TREE_NOTHROW (gfor_fndecl_size0) = 1; |
241ecdc7 | 2894 | |
2895 | gfor_fndecl_size1 = gfc_build_library_function_decl_with_spec ( | |
2896 | get_identifier (PREFIX("size1")), ".R", | |
2897 | gfc_array_index_type, 2, pvoid_type_node, gfc_array_index_type); | |
537824d1 | 2898 | DECL_PURE_P (gfor_fndecl_size1) = 1; |
bc351485 | 2899 | TREE_NOTHROW (gfor_fndecl_size1) = 1; |
241ecdc7 | 2900 | |
2901 | gfor_fndecl_iargc = gfc_build_library_function_decl ( | |
2902 | get_identifier (PREFIX ("iargc")), gfc_int4_type_node, 0); | |
bc351485 | 2903 | TREE_NOTHROW (gfor_fndecl_iargc) = 1; |
4ee9c684 | 2904 | } |
2905 | ||
2906 | ||
2907 | /* Make prototypes for runtime library functions. */ | |
2908 | ||
2909 | void | |
2910 | gfc_build_builtin_function_decls (void) | |
2911 | { | |
90ba9145 | 2912 | tree gfc_int4_type_node = gfc_get_int_type (4); |
4ee9c684 | 2913 | |
241ecdc7 | 2914 | gfor_fndecl_stop_numeric = gfc_build_library_function_decl ( |
2915 | get_identifier (PREFIX("stop_numeric")), | |
2916 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 2917 | /* STOP doesn't return. */ |
98ccec97 | 2918 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1; |
2919 | ||
dff2ea5f | 2920 | gfor_fndecl_stop_numeric_f08 = gfc_build_library_function_decl ( |
2921 | get_identifier (PREFIX("stop_numeric_f08")), | |
2922 | void_type_node, 1, gfc_int4_type_node); | |
2923 | /* STOP doesn't return. */ | |
2924 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric_f08) = 1; | |
2925 | ||
241ecdc7 | 2926 | gfor_fndecl_stop_string = gfc_build_library_function_decl_with_spec ( |
2927 | get_identifier (PREFIX("stop_string")), ".R.", | |
2928 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
070cc790 | 2929 | /* STOP doesn't return. */ |
241ecdc7 | 2930 | TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1; |
537824d1 | 2931 | |
241ecdc7 | 2932 | gfor_fndecl_error_stop_numeric = gfc_build_library_function_decl ( |
2933 | get_identifier (PREFIX("error_stop_numeric")), | |
2934 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 2935 | /* ERROR STOP doesn't return. */ |
2936 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_numeric) = 1; | |
2937 | ||
241ecdc7 | 2938 | gfor_fndecl_error_stop_string = gfc_build_library_function_decl_with_spec ( |
2939 | get_identifier (PREFIX("error_stop_string")), ".R.", | |
2940 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
c6cd3066 | 2941 | /* ERROR STOP doesn't return. */ |
2942 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_string) = 1; | |
2943 | ||
241ecdc7 | 2944 | gfor_fndecl_pause_numeric = gfc_build_library_function_decl ( |
2945 | get_identifier (PREFIX("pause_numeric")), | |
2946 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 2947 | |
241ecdc7 | 2948 | gfor_fndecl_pause_string = gfc_build_library_function_decl_with_spec ( |
2949 | get_identifier (PREFIX("pause_string")), ".R.", | |
2950 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
4ee9c684 | 2951 | |
241ecdc7 | 2952 | gfor_fndecl_runtime_error = gfc_build_library_function_decl_with_spec ( |
2953 | get_identifier (PREFIX("runtime_error")), ".R", | |
2954 | void_type_node, -1, pchar_type_node); | |
9c0f3811 | 2955 | /* The runtime_error function does not return. */ |
2956 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1; | |
4ee9c684 | 2957 | |
241ecdc7 | 2958 | gfor_fndecl_runtime_error_at = gfc_build_library_function_decl_with_spec ( |
2959 | get_identifier (PREFIX("runtime_error_at")), ".RR", | |
2960 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
50ad5fa2 | 2961 | /* The runtime_error_at function does not return. */ |
2962 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1; | |
2963 | ||
241ecdc7 | 2964 | gfor_fndecl_runtime_warning_at = gfc_build_library_function_decl_with_spec ( |
2965 | get_identifier (PREFIX("runtime_warning_at")), ".RR", | |
2966 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
2967 | ||
2968 | gfor_fndecl_generate_error = gfc_build_library_function_decl_with_spec ( | |
2969 | get_identifier (PREFIX("generate_error")), ".R.R", | |
2970 | void_type_node, 3, pvoid_type_node, integer_type_node, | |
2971 | pchar_type_node); | |
2972 | ||
2973 | gfor_fndecl_os_error = gfc_build_library_function_decl_with_spec ( | |
2974 | get_identifier (PREFIX("os_error")), ".R", | |
2975 | void_type_node, 1, pchar_type_node); | |
9915365e | 2976 | /* The runtime_error function does not return. */ |
2977 | TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1; | |
2978 | ||
241ecdc7 | 2979 | gfor_fndecl_set_args = gfc_build_library_function_decl ( |
2980 | get_identifier (PREFIX("set_args")), | |
2981 | void_type_node, 2, integer_type_node, | |
2982 | build_pointer_type (pchar_type_node)); | |
7257a5d2 | 2983 | |
241ecdc7 | 2984 | gfor_fndecl_set_fpe = gfc_build_library_function_decl ( |
2985 | get_identifier (PREFIX("set_fpe")), | |
2986 | void_type_node, 1, integer_type_node); | |
8c84a5de | 2987 | |
56c7c2d7 | 2988 | /* Keep the array dimension in sync with the call, later in this file. */ |
241ecdc7 | 2989 | gfor_fndecl_set_options = gfc_build_library_function_decl_with_spec ( |
2990 | get_identifier (PREFIX("set_options")), "..R", | |
2991 | void_type_node, 2, integer_type_node, | |
2992 | build_pointer_type (integer_type_node)); | |
64fc3c4c | 2993 | |
241ecdc7 | 2994 | gfor_fndecl_set_convert = gfc_build_library_function_decl ( |
2995 | get_identifier (PREFIX("set_convert")), | |
2996 | void_type_node, 1, integer_type_node); | |
15774a8b | 2997 | |
241ecdc7 | 2998 | gfor_fndecl_set_record_marker = gfc_build_library_function_decl ( |
2999 | get_identifier (PREFIX("set_record_marker")), | |
3000 | void_type_node, 1, integer_type_node); | |
f23886ab | 3001 | |
241ecdc7 | 3002 | gfor_fndecl_set_max_subrecord_length = gfc_build_library_function_decl ( |
3003 | get_identifier (PREFIX("set_max_subrecord_length")), | |
3004 | void_type_node, 1, integer_type_node); | |
bbaaa7b1 | 3005 | |
8ce86007 | 3006 | gfor_fndecl_in_pack = gfc_build_library_function_decl_with_spec ( |
241ecdc7 | 3007 | get_identifier (PREFIX("internal_pack")), ".r", |
3008 | pvoid_type_node, 1, pvoid_type_node); | |
4ee9c684 | 3009 | |
8ce86007 | 3010 | gfor_fndecl_in_unpack = gfc_build_library_function_decl_with_spec ( |
241ecdc7 | 3011 | get_identifier (PREFIX("internal_unpack")), ".wR", |
3012 | void_type_node, 2, pvoid_type_node, pvoid_type_node); | |
3013 | ||
3014 | gfor_fndecl_associated = gfc_build_library_function_decl_with_spec ( | |
3015 | get_identifier (PREFIX("associated")), ".RR", | |
3016 | integer_type_node, 2, ppvoid_type_node, ppvoid_type_node); | |
537824d1 | 3017 | DECL_PURE_P (gfor_fndecl_associated) = 1; |
bc351485 | 3018 | TREE_NOTHROW (gfor_fndecl_associated) = 1; |
4ee9c684 | 3019 | |
70b5944a | 3020 | /* Coarray library calls. */ |
3021 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
3022 | { | |
3023 | tree pint_type, pppchar_type; | |
3024 | ||
3025 | pint_type = build_pointer_type (integer_type_node); | |
3026 | pppchar_type | |
3027 | = build_pointer_type (build_pointer_type (pchar_type_node)); | |
3028 | ||
3029 | gfor_fndecl_caf_init = gfc_build_library_function_decl ( | |
3030 | get_identifier (PREFIX("caf_init")), void_type_node, | |
3031 | 4, pint_type, pppchar_type, pint_type, pint_type); | |
3032 | ||
3033 | gfor_fndecl_caf_finalize = gfc_build_library_function_decl ( | |
3034 | get_identifier (PREFIX("caf_finalize")), void_type_node, 0); | |
3035 | ||
3036 | gfor_fndecl_caf_critical = gfc_build_library_function_decl ( | |
3037 | get_identifier (PREFIX("caf_critical")), void_type_node, 0); | |
3038 | ||
3039 | gfor_fndecl_caf_end_critical = gfc_build_library_function_decl ( | |
3040 | get_identifier (PREFIX("caf_end_critical")), void_type_node, 0); | |
3041 | ||
3042 | gfor_fndecl_caf_sync_all = gfc_build_library_function_decl_with_spec ( | |
3043 | get_identifier (PREFIX("caf_sync_all")), ".W", integer_type_node, | |
3044 | 2, build_pointer_type (pchar_type_node), integer_type_node); | |
3045 | ||
3046 | gfor_fndecl_caf_sync_images = gfc_build_library_function_decl_with_spec ( | |
3047 | get_identifier (PREFIX("caf_sync_images")), ".RRW", integer_type_node, | |
3048 | 4, integer_type_node, pint_type, build_pointer_type (pchar_type_node), | |
3049 | integer_type_node); | |
3050 | ||
3051 | gfor_fndecl_caf_error_stop = gfc_build_library_function_decl ( | |
3052 | get_identifier (PREFIX("caf_error_stop")), | |
3053 | void_type_node, 1, gfc_int4_type_node); | |
3054 | /* CAF's ERROR STOP doesn't return. */ | |
3055 | TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop) = 1; | |
3056 | ||
3057 | gfor_fndecl_caf_error_stop_str = gfc_build_library_function_decl_with_spec ( | |
3058 | get_identifier (PREFIX("caf_error_stop_str")), ".R.", | |
3059 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
3060 | /* CAF's ERROR STOP doesn't return. */ | |
3061 | TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop_str) = 1; | |
3062 | } | |
3063 | ||
4ee9c684 | 3064 | gfc_build_intrinsic_function_decls (); |
3065 | gfc_build_intrinsic_lib_fndecls (); | |
3066 | gfc_build_io_library_fndecls (); | |
3067 | } | |
3068 | ||
3069 | ||
231e961a | 3070 | /* Evaluate the length of dummy character variables. */ |
4ee9c684 | 3071 | |
c5faa799 | 3072 | static void |
3073 | gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, | |
3074 | gfc_wrapped_block *block) | |
4ee9c684 | 3075 | { |
c5faa799 | 3076 | stmtblock_t init; |
4ee9c684 | 3077 | |
b9c7fce7 | 3078 | gfc_finish_decl (cl->backend_decl); |
4ee9c684 | 3079 | |
c5faa799 | 3080 | gfc_start_block (&init); |
4ee9c684 | 3081 | |
3082 | /* Evaluate the string length expression. */ | |
c5faa799 | 3083 | gfc_conv_string_length (cl, NULL, &init); |
d4163395 | 3084 | |
c5faa799 | 3085 | gfc_trans_vla_type_sizes (sym, &init); |
d4163395 | 3086 | |
c5faa799 | 3087 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
4ee9c684 | 3088 | } |
3089 | ||
3090 | ||
3091 | /* Allocate and cleanup an automatic character variable. */ | |
3092 | ||
c5faa799 | 3093 | static void |
3094 | gfc_trans_auto_character_variable (gfc_symbol * sym, gfc_wrapped_block * block) | |
4ee9c684 | 3095 | { |
c5faa799 | 3096 | stmtblock_t init; |
4ee9c684 | 3097 | tree decl; |
4ee9c684 | 3098 | tree tmp; |
3099 | ||
22d678e8 | 3100 | gcc_assert (sym->backend_decl); |
eeebe20b | 3101 | gcc_assert (sym->ts.u.cl && sym->ts.u.cl->length); |
4ee9c684 | 3102 | |
3714c8b6 | 3103 | gfc_init_block (&init); |
4ee9c684 | 3104 | |
3105 | /* Evaluate the string length expression. */ | |
c5faa799 | 3106 | gfc_conv_string_length (sym->ts.u.cl, NULL, &init); |
4ee9c684 | 3107 | |
c5faa799 | 3108 | gfc_trans_vla_type_sizes (sym, &init); |
d4163395 | 3109 | |
4ee9c684 | 3110 | decl = sym->backend_decl; |
3111 | ||
afcf285e | 3112 | /* Emit a DECL_EXPR for this variable, which will cause the |
4b3a701c | 3113 | gimplifier to allocate storage, and all that good stuff. */ |
fd779e1d | 3114 | tmp = fold_build1_loc (input_location, DECL_EXPR, TREE_TYPE (decl), decl); |
c5faa799 | 3115 | gfc_add_expr_to_block (&init, tmp); |
afcf285e | 3116 | |
c5faa799 | 3117 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
4ee9c684 | 3118 | } |
3119 | ||
c8f1568f | 3120 | /* Set the initial value of ASSIGN statement auxiliary variable explicitly. */ |
3121 | ||
c5faa799 | 3122 | static void |
3123 | gfc_trans_assign_aux_var (gfc_symbol * sym, gfc_wrapped_block * block) | |
c8f1568f | 3124 | { |
c5faa799 | 3125 | stmtblock_t init; |
c8f1568f | 3126 | |
3127 | gcc_assert (sym->backend_decl); | |
c5faa799 | 3128 | gfc_start_block (&init); |
c8f1568f | 3129 | |
3130 | /* Set the initial value to length. See the comments in | |
3131 | function gfc_add_assign_aux_vars in this file. */ | |
c5faa799 | 3132 | gfc_add_modify (&init, GFC_DECL_STRING_LEN (sym->backend_decl), |
3133 | build_int_cst (NULL_TREE, -2)); | |
c8f1568f | 3134 | |
c5faa799 | 3135 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
c8f1568f | 3136 | } |
3137 | ||
d4163395 | 3138 | static void |
3139 | gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body) | |
3140 | { | |
3141 | tree t = *tp, var, val; | |
3142 | ||
3143 | if (t == NULL || t == error_mark_node) | |
3144 | return; | |
3145 | if (TREE_CONSTANT (t) || DECL_P (t)) | |
3146 | return; | |
3147 | ||
3148 | if (TREE_CODE (t) == SAVE_EXPR) | |
3149 | { | |
3150 | if (SAVE_EXPR_RESOLVED_P (t)) | |
3151 | { | |
3152 | *tp = TREE_OPERAND (t, 0); | |
3153 | return; | |
3154 | } | |
3155 | val = TREE_OPERAND (t, 0); | |
3156 | } | |
3157 | else | |
3158 | val = t; | |
3159 | ||
3160 | var = gfc_create_var_np (TREE_TYPE (t), NULL); | |
3161 | gfc_add_decl_to_function (var); | |
75a70cf9 | 3162 | gfc_add_modify (body, var, val); |
d4163395 | 3163 | if (TREE_CODE (t) == SAVE_EXPR) |
3164 | TREE_OPERAND (t, 0) = var; | |
3165 | *tp = var; | |
3166 | } | |
3167 | ||
3168 | static void | |
3169 | gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body) | |
3170 | { | |
3171 | tree t; | |
3172 | ||
3173 | if (type == NULL || type == error_mark_node) | |
3174 | return; | |
3175 | ||
3176 | type = TYPE_MAIN_VARIANT (type); | |
3177 | ||
3178 | if (TREE_CODE (type) == INTEGER_TYPE) | |
3179 | { | |
3180 | gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body); | |
3181 | gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body); | |
3182 | ||
3183 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3184 | { | |
3185 | TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type); | |
3186 | TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type); | |
3187 | } | |
3188 | } | |
3189 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
3190 | { | |
3191 | gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body); | |
3192 | gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body); | |
3193 | gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body); | |
3194 | gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body); | |
3195 | ||
3196 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3197 | { | |
3198 | TYPE_SIZE (t) = TYPE_SIZE (type); | |
3199 | TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type); | |
3200 | } | |
3201 | } | |
3202 | } | |
3203 | ||
3204 | /* Make sure all type sizes and array domains are either constant, | |
3205 | or variable or parameter decls. This is a simplified variant | |
3206 | of gimplify_type_sizes, but we can't use it here, as none of the | |
3207 | variables in the expressions have been gimplified yet. | |
3208 | As type sizes and domains for various variable length arrays | |
3209 | contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars | |
3210 | time, without this routine gimplify_type_sizes in the middle-end | |
3211 | could result in the type sizes being gimplified earlier than where | |
3212 | those variables are initialized. */ | |
3213 | ||
3214 | void | |
3215 | gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body) | |
3216 | { | |
3217 | tree type = TREE_TYPE (sym->backend_decl); | |
3218 | ||
3219 | if (TREE_CODE (type) == FUNCTION_TYPE | |
3220 | && (sym->attr.function || sym->attr.result || sym->attr.entry)) | |
3221 | { | |
3222 | if (! current_fake_result_decl) | |
3223 | return; | |
3224 | ||
3225 | type = TREE_TYPE (TREE_VALUE (current_fake_result_decl)); | |
3226 | } | |
3227 | ||
3228 | while (POINTER_TYPE_P (type)) | |
3229 | type = TREE_TYPE (type); | |
3230 | ||
3231 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
3232 | { | |
3233 | tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type); | |
3234 | ||
3235 | while (POINTER_TYPE_P (etype)) | |
3236 | etype = TREE_TYPE (etype); | |
3237 | ||
3238 | gfc_trans_vla_type_sizes_1 (etype, body); | |
3239 | } | |
3240 | ||
3241 | gfc_trans_vla_type_sizes_1 (type, body); | |
3242 | } | |
3243 | ||
4ee9c684 | 3244 | |
f0d4969f | 3245 | /* Initialize a derived type by building an lvalue from the symbol |
a545a8f8 | 3246 | and using trans_assignment to do the work. Set dealloc to false |
3247 | if no deallocation prior the assignment is needed. */ | |
c5faa799 | 3248 | void |
3249 | gfc_init_default_dt (gfc_symbol * sym, stmtblock_t * block, bool dealloc) | |
87114d2e | 3250 | { |
f0d4969f | 3251 | gfc_expr *e; |
87114d2e | 3252 | tree tmp; |
3253 | tree present; | |
3254 | ||
c5faa799 | 3255 | gcc_assert (block); |
3256 | ||
f0d4969f | 3257 | gcc_assert (!sym->attr.allocatable); |
3258 | gfc_set_sym_referenced (sym); | |
3259 | e = gfc_lval_expr_from_sym (sym); | |
a545a8f8 | 3260 | tmp = gfc_trans_assignment (e, sym->value, false, dealloc); |
c38054a8 | 3261 | if (sym->attr.dummy && (sym->attr.optional |
3262 | || sym->ns->proc_name->attr.entry_master)) | |
87114d2e | 3263 | { |
f0d4969f | 3264 | present = gfc_conv_expr_present (sym); |
2be9d8f1 | 3265 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), present, |
3266 | tmp, build_empty_stmt (input_location)); | |
87114d2e | 3267 | } |
c5faa799 | 3268 | gfc_add_expr_to_block (block, tmp); |
f0d4969f | 3269 | gfc_free_expr (e); |
87114d2e | 3270 | } |
3271 | ||
3272 | ||
8714fc76 | 3273 | /* Initialize INTENT(OUT) derived type dummies. As well as giving |
3274 | them their default initializer, if they do not have allocatable | |
3275 | components, they have their allocatable components deallocated. */ | |
3276 | ||
c5faa799 | 3277 | static void |
3278 | init_intent_out_dt (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
f0d4969f | 3279 | { |
c5faa799 | 3280 | stmtblock_t init; |
f0d4969f | 3281 | gfc_formal_arglist *f; |
8714fc76 | 3282 | tree tmp; |
5907c3ea | 3283 | tree present; |
f0d4969f | 3284 | |
c5faa799 | 3285 | gfc_init_block (&init); |
f0d4969f | 3286 | for (f = proc_sym->formal; f; f = f->next) |
3287 | if (f->sym && f->sym->attr.intent == INTENT_OUT | |
c49db15e | 3288 | && !f->sym->attr.pointer |
3289 | && f->sym->ts.type == BT_DERIVED) | |
8714fc76 | 3290 | { |
c38054a8 | 3291 | if (f->sym->ts.u.derived->attr.alloc_comp && !f->sym->value) |
8714fc76 | 3292 | { |
eeebe20b | 3293 | tmp = gfc_deallocate_alloc_comp (f->sym->ts.u.derived, |
8714fc76 | 3294 | f->sym->backend_decl, |
3295 | f->sym->as ? f->sym->as->rank : 0); | |
5907c3ea | 3296 | |
c38054a8 | 3297 | if (f->sym->attr.optional |
3298 | || f->sym->ns->proc_name->attr.entry_master) | |
3299 | { | |
3300 | present = gfc_conv_expr_present (f->sym); | |
2be9d8f1 | 3301 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), |
3302 | present, tmp, | |
3303 | build_empty_stmt (input_location)); | |
c38054a8 | 3304 | } |
5907c3ea | 3305 | |
c5faa799 | 3306 | gfc_add_expr_to_block (&init, tmp); |
8714fc76 | 3307 | } |
c38054a8 | 3308 | else if (f->sym->value) |
c5faa799 | 3309 | gfc_init_default_dt (f->sym, &init, true); |
8714fc76 | 3310 | } |
c56d57d6 | 3311 | else if (f->sym && f->sym->attr.intent == INTENT_OUT |
3312 | && f->sym->ts.type == BT_CLASS | |
3313 | && !CLASS_DATA (f->sym)->attr.class_pointer | |
3314 | && CLASS_DATA (f->sym)->ts.u.derived->attr.alloc_comp) | |
3315 | { | |
3316 | tree decl = build_fold_indirect_ref_loc (input_location, | |
3317 | f->sym->backend_decl); | |
3318 | tmp = CLASS_DATA (f->sym)->backend_decl; | |
3319 | tmp = fold_build3_loc (input_location, COMPONENT_REF, | |
3320 | TREE_TYPE (tmp), decl, tmp, NULL_TREE); | |
3321 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
3322 | tmp = gfc_deallocate_alloc_comp (CLASS_DATA (f->sym)->ts.u.derived, | |
3323 | tmp, | |
3324 | CLASS_DATA (f->sym)->as ? | |
3325 | CLASS_DATA (f->sym)->as->rank : 0); | |
3326 | ||
3327 | if (f->sym->attr.optional || f->sym->ns->proc_name->attr.entry_master) | |
3328 | { | |
3329 | present = gfc_conv_expr_present (f->sym); | |
3330 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), | |
3331 | present, tmp, | |
3332 | build_empty_stmt (input_location)); | |
3333 | } | |
3334 | ||
3335 | gfc_add_expr_to_block (&init, tmp); | |
3336 | } | |
f0d4969f | 3337 | |
c5faa799 | 3338 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
f0d4969f | 3339 | } |
3340 | ||
87114d2e | 3341 | |
4ee9c684 | 3342 | /* Generate function entry and exit code, and add it to the function body. |
3343 | This includes: | |
f888a3fb | 3344 | Allocation and initialization of array variables. |
4ee9c684 | 3345 | Allocation of character string variables. |
c8f1568f | 3346 | Initialization and possibly repacking of dummy arrays. |
0a96a7cc | 3347 | Initialization of ASSIGN statement auxiliary variable. |
8f3f9eab | 3348 | Initialization of ASSOCIATE names. |
0a96a7cc | 3349 | Automatic deallocation. */ |
4ee9c684 | 3350 | |
89ac8ba1 | 3351 | void |
3352 | gfc_trans_deferred_vars (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
4ee9c684 | 3353 | { |
3354 | locus loc; | |
3355 | gfc_symbol *sym; | |
d4163395 | 3356 | gfc_formal_arglist *f; |
c5faa799 | 3357 | stmtblock_t tmpblock; |
25dd7350 | 3358 | bool seen_trans_deferred_array = false; |
617125a6 | 3359 | tree tmp = NULL; |
3360 | gfc_expr *e; | |
3361 | gfc_se se; | |
3362 | stmtblock_t init; | |
4ee9c684 | 3363 | |
3364 | /* Deal with implicit return variables. Explicit return variables will | |
3365 | already have been added. */ | |
3366 | if (gfc_return_by_reference (proc_sym) && proc_sym->result == proc_sym) | |
3367 | { | |
3368 | if (!current_fake_result_decl) | |
3369 | { | |
c6871095 | 3370 | gfc_entry_list *el = NULL; |
3371 | if (proc_sym->attr.entry_master) | |
3372 | { | |
3373 | for (el = proc_sym->ns->entries; el; el = el->next) | |
3374 | if (el->sym != el->sym->result) | |
3375 | break; | |
3376 | } | |
fa7b6574 | 3377 | /* TODO: move to the appropriate place in resolve.c. */ |
3378 | if (warn_return_type && el == NULL) | |
3379 | gfc_warning ("Return value of function '%s' at %L not set", | |
3380 | proc_sym->name, &proc_sym->declared_at); | |
4ee9c684 | 3381 | } |
c6871095 | 3382 | else if (proc_sym->as) |
4ee9c684 | 3383 | { |
d4163395 | 3384 | tree result = TREE_VALUE (current_fake_result_decl); |
89ac8ba1 | 3385 | gfc_trans_dummy_array_bias (proc_sym, result, block); |
10b07432 | 3386 | |
3387 | /* An automatic character length, pointer array result. */ | |
3388 | if (proc_sym->ts.type == BT_CHARACTER | |
eeebe20b | 3389 | && TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) |
89ac8ba1 | 3390 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
4ee9c684 | 3391 | } |
3392 | else if (proc_sym->ts.type == BT_CHARACTER) | |
3393 | { | |
617125a6 | 3394 | if (proc_sym->ts.deferred) |
3395 | { | |
3396 | tmp = NULL; | |
da2c4122 | 3397 | gfc_save_backend_locus (&loc); |
3398 | gfc_set_backend_locus (&proc_sym->declared_at); | |
617125a6 | 3399 | gfc_start_block (&init); |
3400 | /* Zero the string length on entry. */ | |
3401 | gfc_add_modify (&init, proc_sym->ts.u.cl->backend_decl, | |
3402 | build_int_cst (gfc_charlen_type_node, 0)); | |
3403 | /* Null the pointer. */ | |
3404 | e = gfc_lval_expr_from_sym (proc_sym); | |
3405 | gfc_init_se (&se, NULL); | |
3406 | se.want_pointer = 1; | |
3407 | gfc_conv_expr (&se, e); | |
3408 | gfc_free_expr (e); | |
3409 | tmp = se.expr; | |
3410 | gfc_add_modify (&init, tmp, | |
3411 | fold_convert (TREE_TYPE (se.expr), | |
3412 | null_pointer_node)); | |
da2c4122 | 3413 | gfc_restore_backend_locus (&loc); |
617125a6 | 3414 | |
3415 | /* Pass back the string length on exit. */ | |
3416 | tmp = proc_sym->ts.u.cl->passed_length; | |
3417 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
3418 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
3419 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
3420 | gfc_charlen_type_node, tmp, | |
3421 | proc_sym->ts.u.cl->backend_decl); | |
3422 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
3423 | } | |
3424 | else if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) | |
89ac8ba1 | 3425 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
4ee9c684 | 3426 | } |
3427 | else | |
bdaed7d2 | 3428 | gcc_assert (gfc_option.flag_f2c |
3429 | && proc_sym->ts.type == BT_COMPLEX); | |
4ee9c684 | 3430 | } |
3431 | ||
87114d2e | 3432 | /* Initialize the INTENT(OUT) derived type dummy arguments. This |
3433 | should be done here so that the offsets and lbounds of arrays | |
3434 | are available. */ | |
da2c4122 | 3435 | gfc_save_backend_locus (&loc); |
3436 | gfc_set_backend_locus (&proc_sym->declared_at); | |
89ac8ba1 | 3437 | init_intent_out_dt (proc_sym, block); |
da2c4122 | 3438 | gfc_restore_backend_locus (&loc); |
87114d2e | 3439 | |
4ee9c684 | 3440 | for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink) |
3441 | { | |
2294b616 | 3442 | bool sym_has_alloc_comp = (sym->ts.type == BT_DERIVED) |
eeebe20b | 3443 | && sym->ts.u.derived->attr.alloc_comp; |
8f3f9eab | 3444 | if (sym->assoc) |
3c82e013 | 3445 | continue; |
3446 | ||
3447 | if (sym->attr.dimension) | |
4ee9c684 | 3448 | { |
3449 | switch (sym->as->type) | |
3450 | { | |
3451 | case AS_EXPLICIT: | |
3452 | if (sym->attr.dummy || sym->attr.result) | |
89ac8ba1 | 3453 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
4ee9c684 | 3454 | else if (sym->attr.pointer || sym->attr.allocatable) |
3455 | { | |
3456 | if (TREE_STATIC (sym->backend_decl)) | |
da2c4122 | 3457 | { |
3458 | gfc_save_backend_locus (&loc); | |
3459 | gfc_set_backend_locus (&sym->declared_at); | |
3460 | gfc_trans_static_array_pointer (sym); | |
3461 | gfc_restore_backend_locus (&loc); | |
3462 | } | |
4ee9c684 | 3463 | else |
25dd7350 | 3464 | { |
3465 | seen_trans_deferred_array = true; | |
89ac8ba1 | 3466 | gfc_trans_deferred_array (sym, block); |
25dd7350 | 3467 | } |
4ee9c684 | 3468 | } |
3469 | else | |
3470 | { | |
da2c4122 | 3471 | gfc_save_backend_locus (&loc); |
3472 | gfc_set_backend_locus (&sym->declared_at); | |
3473 | ||
25dd7350 | 3474 | if (sym_has_alloc_comp) |
3475 | { | |
3476 | seen_trans_deferred_array = true; | |
89ac8ba1 | 3477 | gfc_trans_deferred_array (sym, block); |
25dd7350 | 3478 | } |
f0d4969f | 3479 | else if (sym->ts.type == BT_DERIVED |
3480 | && sym->value | |
3481 | && !sym->attr.data | |
3482 | && sym->attr.save == SAVE_NONE) | |
c5faa799 | 3483 | { |
3484 | gfc_start_block (&tmpblock); | |
3485 | gfc_init_default_dt (sym, &tmpblock, false); | |
89ac8ba1 | 3486 | gfc_add_init_cleanup (block, |
c5faa799 | 3487 | gfc_finish_block (&tmpblock), |
3488 | NULL_TREE); | |
3489 | } | |
25dd7350 | 3490 | |
c5faa799 | 3491 | gfc_trans_auto_array_allocation (sym->backend_decl, |
89ac8ba1 | 3492 | sym, block); |
4671339c | 3493 | gfc_restore_backend_locus (&loc); |
4ee9c684 | 3494 | } |
3495 | break; | |
3496 | ||
3497 | case AS_ASSUMED_SIZE: | |
3498 | /* Must be a dummy parameter. */ | |
452695a8 | 3499 | gcc_assert (sym->attr.dummy || sym->as->cp_was_assumed); |
4ee9c684 | 3500 | |
3501 | /* We should always pass assumed size arrays the g77 way. */ | |
452695a8 | 3502 | if (sym->attr.dummy) |
89ac8ba1 | 3503 | gfc_trans_g77_array (sym, block); |
c5faa799 | 3504 | break; |
4ee9c684 | 3505 | |
3506 | case AS_ASSUMED_SHAPE: | |
3507 | /* Must be a dummy parameter. */ | |
22d678e8 | 3508 | gcc_assert (sym->attr.dummy); |
4ee9c684 | 3509 | |
89ac8ba1 | 3510 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
4ee9c684 | 3511 | break; |
3512 | ||
3513 | case AS_DEFERRED: | |
25dd7350 | 3514 | seen_trans_deferred_array = true; |
89ac8ba1 | 3515 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 3516 | break; |
3517 | ||
3518 | default: | |
22d678e8 | 3519 | gcc_unreachable (); |
4ee9c684 | 3520 | } |
25dd7350 | 3521 | if (sym_has_alloc_comp && !seen_trans_deferred_array) |
89ac8ba1 | 3522 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 3523 | } |
617125a6 | 3524 | else if ((!sym->attr.dummy || sym->ts.deferred) |
456dd7d6 | 3525 | && (sym->attr.allocatable |
3526 | || (sym->ts.type == BT_CLASS | |
3527 | && CLASS_DATA (sym)->attr.allocatable))) | |
0a96a7cc | 3528 | { |
908e9973 | 3529 | if (!sym->attr.save) |
3530 | { | |
3531 | /* Nullify and automatic deallocation of allocatable | |
3532 | scalars. */ | |
908e9973 | 3533 | e = gfc_lval_expr_from_sym (sym); |
3534 | if (sym->ts.type == BT_CLASS) | |
607ae689 | 3535 | gfc_add_data_component (e); |
908e9973 | 3536 | |
3537 | gfc_init_se (&se, NULL); | |
3538 | se.want_pointer = 1; | |
3539 | gfc_conv_expr (&se, e); | |
3540 | gfc_free_expr (e); | |
3541 | ||
da2c4122 | 3542 | gfc_save_backend_locus (&loc); |
3543 | gfc_set_backend_locus (&sym->declared_at); | |
c5faa799 | 3544 | gfc_start_block (&init); |
617125a6 | 3545 | |
3546 | if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
3547 | { | |
3548 | /* Nullify when entering the scope. */ | |
3549 | gfc_add_modify (&init, se.expr, | |
3550 | fold_convert (TREE_TYPE (se.expr), | |
3551 | null_pointer_node)); | |
3552 | } | |
3553 | ||
3554 | if ((sym->attr.dummy ||sym->attr.result) | |
3555 | && sym->ts.type == BT_CHARACTER | |
3556 | && sym->ts.deferred) | |
3557 | { | |
3558 | /* Character length passed by reference. */ | |
3559 | tmp = sym->ts.u.cl->passed_length; | |
3560 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
3561 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
3562 | ||
3563 | if (!sym->attr.dummy || sym->attr.intent == INTENT_OUT) | |
3564 | /* Zero the string length when entering the scope. */ | |
3565 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, | |
3566 | build_int_cst (gfc_charlen_type_node, 0)); | |
3567 | else | |
3568 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, tmp); | |
3569 | ||
da2c4122 | 3570 | gfc_restore_backend_locus (&loc); |
3571 | ||
617125a6 | 3572 | /* Pass the final character length back. */ |
3573 | if (sym->attr.intent != INTENT_IN) | |
3574 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
3575 | gfc_charlen_type_node, tmp, | |
3576 | sym->ts.u.cl->backend_decl); | |
3577 | else | |
3578 | tmp = NULL_TREE; | |
3579 | } | |
da2c4122 | 3580 | else |
3581 | gfc_restore_backend_locus (&loc); | |
908e9973 | 3582 | |
3583 | /* Deallocate when leaving the scope. Nullifying is not | |
3584 | needed. */ | |
617125a6 | 3585 | if (!sym->attr.result && !sym->attr.dummy) |
2bf70a2a | 3586 | tmp = gfc_deallocate_scalar_with_status (se.expr, NULL, true, |
3587 | NULL, sym->ts); | |
afc44c79 | 3588 | |
3589 | if (sym->ts.type == BT_CLASS) | |
3590 | { | |
3591 | /* Initialize _vptr to declared type. */ | |
3592 | gfc_symbol *vtab = gfc_find_derived_vtab (sym->ts.u.derived); | |
3593 | tree rhs; | |
da2c4122 | 3594 | |
3595 | gfc_save_backend_locus (&loc); | |
3596 | gfc_set_backend_locus (&sym->declared_at); | |
afc44c79 | 3597 | e = gfc_lval_expr_from_sym (sym); |
3598 | gfc_add_vptr_component (e); | |
3599 | gfc_init_se (&se, NULL); | |
3600 | se.want_pointer = 1; | |
3601 | gfc_conv_expr (&se, e); | |
3602 | gfc_free_expr (e); | |
3603 | rhs = gfc_build_addr_expr (TREE_TYPE (se.expr), | |
3604 | gfc_get_symbol_decl (vtab)); | |
3605 | gfc_add_modify (&init, se.expr, rhs); | |
da2c4122 | 3606 | gfc_restore_backend_locus (&loc); |
afc44c79 | 3607 | } |
3608 | ||
89ac8ba1 | 3609 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); |
908e9973 | 3610 | } |
0a96a7cc | 3611 | } |
617125a6 | 3612 | else if (sym->ts.type == BT_CHARACTER && sym->ts.deferred) |
3613 | { | |
3614 | tree tmp = NULL; | |
3615 | stmtblock_t init; | |
3616 | ||
3617 | /* If we get to here, all that should be left are pointers. */ | |
3618 | gcc_assert (sym->attr.pointer); | |
3619 | ||
3620 | if (sym->attr.dummy) | |
3621 | { | |
3622 | gfc_start_block (&init); | |
3623 | ||
3624 | /* Character length passed by reference. */ | |
3625 | tmp = sym->ts.u.cl->passed_length; | |
3626 | tmp = build_fold_indirect_ref_loc (input_location, tmp); | |
3627 | tmp = fold_convert (gfc_charlen_type_node, tmp); | |
3628 | gfc_add_modify (&init, sym->ts.u.cl->backend_decl, tmp); | |
3629 | /* Pass the final character length back. */ | |
3630 | if (sym->attr.intent != INTENT_IN) | |
3631 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
3632 | gfc_charlen_type_node, tmp, | |
3633 | sym->ts.u.cl->backend_decl); | |
3634 | else | |
3635 | tmp = NULL_TREE; | |
3636 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); | |
3637 | } | |
3638 | } | |
3e715c81 | 3639 | else if (sym->ts.deferred) |
3640 | gfc_fatal_error ("Deferred type parameter not yet supported"); | |
fabc1fc9 | 3641 | else if (sym_has_alloc_comp) |
89ac8ba1 | 3642 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 3643 | else if (sym->ts.type == BT_CHARACTER) |
3644 | { | |
4671339c | 3645 | gfc_save_backend_locus (&loc); |
4ee9c684 | 3646 | gfc_set_backend_locus (&sym->declared_at); |
3647 | if (sym->attr.dummy || sym->attr.result) | |
89ac8ba1 | 3648 | gfc_trans_dummy_character (sym, sym->ts.u.cl, block); |
4ee9c684 | 3649 | else |
89ac8ba1 | 3650 | gfc_trans_auto_character_variable (sym, block); |
4671339c | 3651 | gfc_restore_backend_locus (&loc); |
4ee9c684 | 3652 | } |
c8f1568f | 3653 | else if (sym->attr.assign) |
3654 | { | |
4671339c | 3655 | gfc_save_backend_locus (&loc); |
c8f1568f | 3656 | gfc_set_backend_locus (&sym->declared_at); |
89ac8ba1 | 3657 | gfc_trans_assign_aux_var (sym, block); |
4671339c | 3658 | gfc_restore_backend_locus (&loc); |
c8f1568f | 3659 | } |
f0d4969f | 3660 | else if (sym->ts.type == BT_DERIVED |
3661 | && sym->value | |
3662 | && !sym->attr.data | |
3663 | && sym->attr.save == SAVE_NONE) | |
c5faa799 | 3664 | { |
3665 | gfc_start_block (&tmpblock); | |
3666 | gfc_init_default_dt (sym, &tmpblock, false); | |
89ac8ba1 | 3667 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), |
c5faa799 | 3668 | NULL_TREE); |
3669 | } | |
4ee9c684 | 3670 | else |
22d678e8 | 3671 | gcc_unreachable (); |
4ee9c684 | 3672 | } |
3673 | ||
c5faa799 | 3674 | gfc_init_block (&tmpblock); |
d4163395 | 3675 | |
3676 | for (f = proc_sym->formal; f; f = f->next) | |
1e853e89 | 3677 | { |
3678 | if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER) | |
3679 | { | |
eeebe20b | 3680 | gcc_assert (f->sym->ts.u.cl->backend_decl != NULL); |
3681 | if (TREE_CODE (f->sym->ts.u.cl->backend_decl) == PARM_DECL) | |
c5faa799 | 3682 | gfc_trans_vla_type_sizes (f->sym, &tmpblock); |
1e853e89 | 3683 | } |
1e853e89 | 3684 | } |
d4163395 | 3685 | |
3686 | if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER | |
3687 | && current_fake_result_decl != NULL) | |
3688 | { | |
eeebe20b | 3689 | gcc_assert (proc_sym->ts.u.cl->backend_decl != NULL); |
3690 | if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == PARM_DECL) | |
c5faa799 | 3691 | gfc_trans_vla_type_sizes (proc_sym, &tmpblock); |
d4163395 | 3692 | } |
3693 | ||
89ac8ba1 | 3694 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), NULL_TREE); |
4ee9c684 | 3695 | } |
3696 | ||
df4d540f | 3697 | static GTY ((param_is (struct module_htab_entry))) htab_t module_htab; |
3698 | ||
3699 | /* Hash and equality functions for module_htab. */ | |
3700 | ||
3701 | static hashval_t | |
3702 | module_htab_do_hash (const void *x) | |
3703 | { | |
3704 | return htab_hash_string (((const struct module_htab_entry *)x)->name); | |
3705 | } | |
3706 | ||
3707 | static int | |
3708 | module_htab_eq (const void *x1, const void *x2) | |
3709 | { | |
3710 | return strcmp ((((const struct module_htab_entry *)x1)->name), | |
3711 | (const char *)x2) == 0; | |
3712 | } | |
3713 | ||
3714 | /* Hash and equality functions for module_htab's decls. */ | |
3715 | ||
3716 | static hashval_t | |
3717 | module_htab_decls_hash (const void *x) | |
3718 | { | |
3719 | const_tree t = (const_tree) x; | |
3720 | const_tree n = DECL_NAME (t); | |
3721 | if (n == NULL_TREE) | |
3722 | n = TYPE_NAME (TREE_TYPE (t)); | |
8f1e8e0e | 3723 | return htab_hash_string (IDENTIFIER_POINTER (n)); |
df4d540f | 3724 | } |
3725 | ||
3726 | static int | |
3727 | module_htab_decls_eq (const void *x1, const void *x2) | |
3728 | { | |
3729 | const_tree t1 = (const_tree) x1; | |
3730 | const_tree n1 = DECL_NAME (t1); | |
3731 | if (n1 == NULL_TREE) | |
3732 | n1 = TYPE_NAME (TREE_TYPE (t1)); | |
3733 | return strcmp (IDENTIFIER_POINTER (n1), (const char *) x2) == 0; | |
3734 | } | |
3735 | ||
3736 | struct module_htab_entry * | |
3737 | gfc_find_module (const char *name) | |
3738 | { | |
3739 | void **slot; | |
3740 | ||
3741 | if (! module_htab) | |
3742 | module_htab = htab_create_ggc (10, module_htab_do_hash, | |
3743 | module_htab_eq, NULL); | |
3744 | ||
3745 | slot = htab_find_slot_with_hash (module_htab, name, | |
3746 | htab_hash_string (name), INSERT); | |
3747 | if (*slot == NULL) | |
3748 | { | |
ba72912a | 3749 | struct module_htab_entry *entry = ggc_alloc_cleared_module_htab_entry (); |
df4d540f | 3750 | |
3751 | entry->name = gfc_get_string (name); | |
3752 | entry->decls = htab_create_ggc (10, module_htab_decls_hash, | |
3753 | module_htab_decls_eq, NULL); | |
3754 | *slot = (void *) entry; | |
3755 | } | |
3756 | return (struct module_htab_entry *) *slot; | |
3757 | } | |
3758 | ||
3759 | void | |
3760 | gfc_module_add_decl (struct module_htab_entry *entry, tree decl) | |
3761 | { | |
3762 | void **slot; | |
3763 | const char *name; | |
3764 | ||
3765 | if (DECL_NAME (decl)) | |
3766 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
3767 | else | |
3768 | { | |
3769 | gcc_assert (TREE_CODE (decl) == TYPE_DECL); | |
3770 | name = IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))); | |
3771 | } | |
3772 | slot = htab_find_slot_with_hash (entry->decls, name, | |
3773 | htab_hash_string (name), INSERT); | |
3774 | if (*slot == NULL) | |
3775 | *slot = (void *) decl; | |
3776 | } | |
3777 | ||
3778 | static struct module_htab_entry *cur_module; | |
4ee9c684 | 3779 | |
3780 | /* Output an initialized decl for a module variable. */ | |
3781 | ||
3782 | static void | |
3783 | gfc_create_module_variable (gfc_symbol * sym) | |
3784 | { | |
3785 | tree decl; | |
4ee9c684 | 3786 | |
d77f260f | 3787 | /* Module functions with alternate entries are dealt with later and |
3788 | would get caught by the next condition. */ | |
3789 | if (sym->attr.entry) | |
3790 | return; | |
3791 | ||
c5d33754 | 3792 | /* Make sure we convert the types of the derived types from iso_c_binding |
3793 | into (void *). */ | |
3794 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
3795 | && sym->ts.type == BT_DERIVED) | |
3796 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
3797 | ||
df4d540f | 3798 | if (sym->attr.flavor == FL_DERIVED |
3799 | && sym->backend_decl | |
3800 | && TREE_CODE (sym->backend_decl) == RECORD_TYPE) | |
3801 | { | |
3802 | decl = sym->backend_decl; | |
3803 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
9f1470cb | 3804 | |
3805 | /* -fwhole-file mixes up the contexts so these asserts are unnecessary. */ | |
3806 | if (!(gfc_option.flag_whole_file && sym->attr.use_assoc)) | |
3807 | { | |
3808 | gcc_assert (TYPE_CONTEXT (decl) == NULL_TREE | |
3809 | || TYPE_CONTEXT (decl) == sym->ns->proc_name->backend_decl); | |
3810 | gcc_assert (DECL_CONTEXT (TYPE_STUB_DECL (decl)) == NULL_TREE | |
3811 | || DECL_CONTEXT (TYPE_STUB_DECL (decl)) | |
3812 | == sym->ns->proc_name->backend_decl); | |
3813 | } | |
df4d540f | 3814 | TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl; |
3815 | DECL_CONTEXT (TYPE_STUB_DECL (decl)) = sym->ns->proc_name->backend_decl; | |
3816 | gfc_module_add_decl (cur_module, TYPE_STUB_DECL (decl)); | |
3817 | } | |
3818 | ||
cf269acc | 3819 | /* Only output variables, procedure pointers and array valued, |
3820 | or derived type, parameters. */ | |
4ee9c684 | 3821 | if (sym->attr.flavor != FL_VARIABLE |
be0f1581 | 3822 | && !(sym->attr.flavor == FL_PARAMETER |
cf269acc | 3823 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) |
3824 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.proc_pointer)) | |
4ee9c684 | 3825 | return; |
3826 | ||
df4d540f | 3827 | if ((sym->attr.in_common || sym->attr.in_equivalence) && sym->backend_decl) |
3828 | { | |
3829 | decl = sym->backend_decl; | |
16a40513 | 3830 | gcc_assert (DECL_FILE_SCOPE_P (decl)); |
df4d540f | 3831 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); |
3832 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
3833 | gfc_module_add_decl (cur_module, decl); | |
3834 | } | |
3835 | ||
d43a7f7f | 3836 | /* Don't generate variables from other modules. Variables from |
3837 | COMMONs will already have been generated. */ | |
3838 | if (sym->attr.use_assoc || sym->attr.in_common) | |
4ee9c684 | 3839 | return; |
3840 | ||
2b685f8e | 3841 | /* Equivalenced variables arrive here after creation. */ |
976d903a | 3842 | if (sym->backend_decl |
df4d540f | 3843 | && (sym->equiv_built || sym->attr.in_equivalence)) |
3844 | return; | |
2b685f8e | 3845 | |
23d075f4 | 3846 | if (sym->backend_decl && !sym->attr.vtab && !sym->attr.target) |
4ee9c684 | 3847 | internal_error ("backend decl for module variable %s already exists", |
3848 | sym->name); | |
3849 | ||
3850 | /* We always want module variables to be created. */ | |
3851 | sym->attr.referenced = 1; | |
3852 | /* Create the decl. */ | |
3853 | decl = gfc_get_symbol_decl (sym); | |
3854 | ||
4ee9c684 | 3855 | /* Create the variable. */ |
3856 | pushdecl (decl); | |
df4d540f | 3857 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); |
3858 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
b2c4af5e | 3859 | rest_of_decl_compilation (decl, 1, 0); |
df4d540f | 3860 | gfc_module_add_decl (cur_module, decl); |
4ee9c684 | 3861 | |
3862 | /* Also add length of strings. */ | |
3863 | if (sym->ts.type == BT_CHARACTER) | |
3864 | { | |
3865 | tree length; | |
3866 | ||
eeebe20b | 3867 | length = sym->ts.u.cl->backend_decl; |
cf4b41d8 | 3868 | gcc_assert (length || sym->attr.proc_pointer); |
3869 | if (length && !INTEGER_CST_P (length)) | |
4ee9c684 | 3870 | { |
3871 | pushdecl (length); | |
b2c4af5e | 3872 | rest_of_decl_compilation (length, 1, 0); |
4ee9c684 | 3873 | } |
3874 | } | |
3875 | } | |
3876 | ||
51d9479b | 3877 | /* Emit debug information for USE statements. */ |
df4d540f | 3878 | |
3879 | static void | |
3880 | gfc_trans_use_stmts (gfc_namespace * ns) | |
3881 | { | |
3882 | gfc_use_list *use_stmt; | |
3883 | for (use_stmt = ns->use_stmts; use_stmt; use_stmt = use_stmt->next) | |
3884 | { | |
3885 | struct module_htab_entry *entry | |
3886 | = gfc_find_module (use_stmt->module_name); | |
3887 | gfc_use_rename *rent; | |
3888 | ||
3889 | if (entry->namespace_decl == NULL) | |
3890 | { | |
3891 | entry->namespace_decl | |
e60a6f7b | 3892 | = build_decl (input_location, |
3893 | NAMESPACE_DECL, | |
df4d540f | 3894 | get_identifier (use_stmt->module_name), |
3895 | void_type_node); | |
3896 | DECL_EXTERNAL (entry->namespace_decl) = 1; | |
3897 | } | |
51d9479b | 3898 | gfc_set_backend_locus (&use_stmt->where); |
df4d540f | 3899 | if (!use_stmt->only_flag) |
3900 | (*debug_hooks->imported_module_or_decl) (entry->namespace_decl, | |
3901 | NULL_TREE, | |
3902 | ns->proc_name->backend_decl, | |
3903 | false); | |
3904 | for (rent = use_stmt->rename; rent; rent = rent->next) | |
3905 | { | |
3906 | tree decl, local_name; | |
3907 | void **slot; | |
3908 | ||
3909 | if (rent->op != INTRINSIC_NONE) | |
3910 | continue; | |
3911 | ||
3912 | slot = htab_find_slot_with_hash (entry->decls, rent->use_name, | |
3913 | htab_hash_string (rent->use_name), | |
3914 | INSERT); | |
3915 | if (*slot == NULL) | |
3916 | { | |
3917 | gfc_symtree *st; | |
3918 | ||
3919 | st = gfc_find_symtree (ns->sym_root, | |
3920 | rent->local_name[0] | |
3921 | ? rent->local_name : rent->use_name); | |
857c96ba | 3922 | gcc_assert (st); |
3923 | ||
3924 | /* Sometimes, generic interfaces wind up being over-ruled by a | |
3925 | local symbol (see PR41062). */ | |
3926 | if (!st->n.sym->attr.use_assoc) | |
3927 | continue; | |
3928 | ||
51d9479b | 3929 | if (st->n.sym->backend_decl |
3930 | && DECL_P (st->n.sym->backend_decl) | |
3931 | && st->n.sym->module | |
3932 | && strcmp (st->n.sym->module, use_stmt->module_name) == 0) | |
df4d540f | 3933 | { |
51d9479b | 3934 | gcc_assert (DECL_EXTERNAL (entry->namespace_decl) |
3935 | || (TREE_CODE (st->n.sym->backend_decl) | |
3936 | != VAR_DECL)); | |
df4d540f | 3937 | decl = copy_node (st->n.sym->backend_decl); |
3938 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
3939 | DECL_EXTERNAL (decl) = 1; | |
3940 | DECL_IGNORED_P (decl) = 0; | |
3941 | DECL_INITIAL (decl) = NULL_TREE; | |
3942 | } | |
3943 | else | |
3944 | { | |
3945 | *slot = error_mark_node; | |
3946 | htab_clear_slot (entry->decls, slot); | |
3947 | continue; | |
3948 | } | |
3949 | *slot = decl; | |
3950 | } | |
3951 | decl = (tree) *slot; | |
3952 | if (rent->local_name[0]) | |
3953 | local_name = get_identifier (rent->local_name); | |
3954 | else | |
3955 | local_name = NULL_TREE; | |
51d9479b | 3956 | gfc_set_backend_locus (&rent->where); |
df4d540f | 3957 | (*debug_hooks->imported_module_or_decl) (decl, local_name, |
3958 | ns->proc_name->backend_decl, | |
3959 | !use_stmt->only_flag); | |
3960 | } | |
3961 | } | |
4ee9c684 | 3962 | } |
3963 | ||
51d9479b | 3964 | |
2eb674c9 | 3965 | /* Return true if expr is a constant initializer that gfc_conv_initializer |
3966 | will handle. */ | |
3967 | ||
3968 | static bool | |
3969 | check_constant_initializer (gfc_expr *expr, gfc_typespec *ts, bool array, | |
3970 | bool pointer) | |
3971 | { | |
3972 | gfc_constructor *c; | |
3973 | gfc_component *cm; | |
3974 | ||
3975 | if (pointer) | |
3976 | return true; | |
3977 | else if (array) | |
3978 | { | |
3979 | if (expr->expr_type == EXPR_CONSTANT || expr->expr_type == EXPR_NULL) | |
3980 | return true; | |
3981 | else if (expr->expr_type == EXPR_STRUCTURE) | |
3982 | return check_constant_initializer (expr, ts, false, false); | |
3983 | else if (expr->expr_type != EXPR_ARRAY) | |
3984 | return false; | |
126387b5 | 3985 | for (c = gfc_constructor_first (expr->value.constructor); |
3986 | c; c = gfc_constructor_next (c)) | |
2eb674c9 | 3987 | { |
3988 | if (c->iterator) | |
3989 | return false; | |
3990 | if (c->expr->expr_type == EXPR_STRUCTURE) | |
3991 | { | |
3992 | if (!check_constant_initializer (c->expr, ts, false, false)) | |
3993 | return false; | |
3994 | } | |
3995 | else if (c->expr->expr_type != EXPR_CONSTANT) | |
3996 | return false; | |
3997 | } | |
3998 | return true; | |
3999 | } | |
4000 | else switch (ts->type) | |
4001 | { | |
4002 | case BT_DERIVED: | |
4003 | if (expr->expr_type != EXPR_STRUCTURE) | |
4004 | return false; | |
eeebe20b | 4005 | cm = expr->ts.u.derived->components; |
126387b5 | 4006 | for (c = gfc_constructor_first (expr->value.constructor); |
4007 | c; c = gfc_constructor_next (c), cm = cm->next) | |
2eb674c9 | 4008 | { |
4009 | if (!c->expr || cm->attr.allocatable) | |
4010 | continue; | |
4011 | if (!check_constant_initializer (c->expr, &cm->ts, | |
4012 | cm->attr.dimension, | |
4013 | cm->attr.pointer)) | |
4014 | return false; | |
4015 | } | |
4016 | return true; | |
4017 | default: | |
4018 | return expr->expr_type == EXPR_CONSTANT; | |
4019 | } | |
4020 | } | |
4021 | ||
4022 | /* Emit debug info for parameters and unreferenced variables with | |
4023 | initializers. */ | |
4024 | ||
4025 | static void | |
4026 | gfc_emit_parameter_debug_info (gfc_symbol *sym) | |
4027 | { | |
4028 | tree decl; | |
4029 | ||
4030 | if (sym->attr.flavor != FL_PARAMETER | |
4031 | && (sym->attr.flavor != FL_VARIABLE || sym->attr.referenced)) | |
4032 | return; | |
4033 | ||
4034 | if (sym->backend_decl != NULL | |
4035 | || sym->value == NULL | |
4036 | || sym->attr.use_assoc | |
4037 | || sym->attr.dummy | |
4038 | || sym->attr.result | |
4039 | || sym->attr.function | |
4040 | || sym->attr.intrinsic | |
4041 | || sym->attr.pointer | |
4042 | || sym->attr.allocatable | |
4043 | || sym->attr.cray_pointee | |
4044 | || sym->attr.threadprivate | |
4045 | || sym->attr.is_bind_c | |
4046 | || sym->attr.subref_array_pointer | |
4047 | || sym->attr.assign) | |
4048 | return; | |
4049 | ||
4050 | if (sym->ts.type == BT_CHARACTER) | |
4051 | { | |
eeebe20b | 4052 | gfc_conv_const_charlen (sym->ts.u.cl); |
4053 | if (sym->ts.u.cl->backend_decl == NULL | |
4054 | || TREE_CODE (sym->ts.u.cl->backend_decl) != INTEGER_CST) | |
2eb674c9 | 4055 | return; |
4056 | } | |
eeebe20b | 4057 | else if (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
2eb674c9 | 4058 | return; |
4059 | ||
4060 | if (sym->as) | |
4061 | { | |
4062 | int n; | |
4063 | ||
4064 | if (sym->as->type != AS_EXPLICIT) | |
4065 | return; | |
4066 | for (n = 0; n < sym->as->rank; n++) | |
4067 | if (sym->as->lower[n]->expr_type != EXPR_CONSTANT | |
4068 | || sym->as->upper[n] == NULL | |
4069 | || sym->as->upper[n]->expr_type != EXPR_CONSTANT) | |
4070 | return; | |
4071 | } | |
4072 | ||
4073 | if (!check_constant_initializer (sym->value, &sym->ts, | |
4074 | sym->attr.dimension, false)) | |
4075 | return; | |
4076 | ||
4077 | /* Create the decl for the variable or constant. */ | |
e60a6f7b | 4078 | decl = build_decl (input_location, |
4079 | sym->attr.flavor == FL_PARAMETER ? CONST_DECL : VAR_DECL, | |
2eb674c9 | 4080 | gfc_sym_identifier (sym), gfc_sym_type (sym)); |
4081 | if (sym->attr.flavor == FL_PARAMETER) | |
4082 | TREE_READONLY (decl) = 1; | |
4083 | gfc_set_decl_location (decl, &sym->declared_at); | |
4084 | if (sym->attr.dimension) | |
4085 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
4086 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
4087 | TREE_STATIC (decl) = 1; | |
4088 | TREE_USED (decl) = 1; | |
4089 | if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
4090 | TREE_PUBLIC (decl) = 1; | |
802532b9 | 4091 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
4092 | TREE_TYPE (decl), | |
4093 | sym->attr.dimension, | |
4094 | false, false); | |
2eb674c9 | 4095 | debug_hooks->global_decl (decl); |
4096 | } | |
4097 | ||
51d9479b | 4098 | /* Generate all the required code for module variables. */ |
4099 | ||
4100 | void | |
4101 | gfc_generate_module_vars (gfc_namespace * ns) | |
4102 | { | |
4103 | module_namespace = ns; | |
4104 | cur_module = gfc_find_module (ns->proc_name->name); | |
4105 | ||
4106 | /* Check if the frontend left the namespace in a reasonable state. */ | |
4107 | gcc_assert (ns->proc_name && !ns->proc_name->tlink); | |
4108 | ||
4109 | /* Generate COMMON blocks. */ | |
4110 | gfc_trans_common (ns); | |
4111 | ||
4112 | /* Create decls for all the module variables. */ | |
4113 | gfc_traverse_ns (ns, gfc_create_module_variable); | |
4114 | ||
4115 | cur_module = NULL; | |
4116 | ||
4117 | gfc_trans_use_stmts (ns); | |
2eb674c9 | 4118 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
51d9479b | 4119 | } |
4120 | ||
4121 | ||
4ee9c684 | 4122 | static void |
4123 | gfc_generate_contained_functions (gfc_namespace * parent) | |
4124 | { | |
4125 | gfc_namespace *ns; | |
4126 | ||
4127 | /* We create all the prototypes before generating any code. */ | |
4128 | for (ns = parent->contained; ns; ns = ns->sibling) | |
4129 | { | |
4130 | /* Skip namespaces from used modules. */ | |
4131 | if (ns->parent != parent) | |
4132 | continue; | |
4133 | ||
d896f9b3 | 4134 | gfc_create_function_decl (ns, false); |
4ee9c684 | 4135 | } |
4136 | ||
4137 | for (ns = parent->contained; ns; ns = ns->sibling) | |
4138 | { | |
4139 | /* Skip namespaces from used modules. */ | |
4140 | if (ns->parent != parent) | |
4141 | continue; | |
4142 | ||
4143 | gfc_generate_function_code (ns); | |
4144 | } | |
4145 | } | |
4146 | ||
4147 | ||
d95efb59 | 4148 | /* Drill down through expressions for the array specification bounds and |
4149 | character length calling generate_local_decl for all those variables | |
4150 | that have not already been declared. */ | |
4151 | ||
4152 | static void | |
4153 | generate_local_decl (gfc_symbol *); | |
4154 | ||
1acb400a | 4155 | /* Traverse expr, marking all EXPR_VARIABLE symbols referenced. */ |
d95efb59 | 4156 | |
1acb400a | 4157 | static bool |
4158 | expr_decls (gfc_expr *e, gfc_symbol *sym, | |
4159 | int *f ATTRIBUTE_UNUSED) | |
4160 | { | |
4161 | if (e->expr_type != EXPR_VARIABLE | |
4162 | || sym == e->symtree->n.sym | |
d95efb59 | 4163 | || e->symtree->n.sym->mark |
4164 | || e->symtree->n.sym->ns != sym->ns) | |
1acb400a | 4165 | return false; |
d95efb59 | 4166 | |
1acb400a | 4167 | generate_local_decl (e->symtree->n.sym); |
4168 | return false; | |
4169 | } | |
d95efb59 | 4170 | |
1acb400a | 4171 | static void |
4172 | generate_expr_decls (gfc_symbol *sym, gfc_expr *e) | |
4173 | { | |
4174 | gfc_traverse_expr (e, sym, expr_decls, 0); | |
d95efb59 | 4175 | } |
4176 | ||
4177 | ||
f6d0e37a | 4178 | /* Check for dependencies in the character length and array spec. */ |
d95efb59 | 4179 | |
4180 | static void | |
4181 | generate_dependency_declarations (gfc_symbol *sym) | |
4182 | { | |
4183 | int i; | |
4184 | ||
4185 | if (sym->ts.type == BT_CHARACTER | |
eeebe20b | 4186 | && sym->ts.u.cl |
4187 | && sym->ts.u.cl->length | |
4188 | && sym->ts.u.cl->length->expr_type != EXPR_CONSTANT) | |
4189 | generate_expr_decls (sym, sym->ts.u.cl->length); | |
d95efb59 | 4190 | |
4191 | if (sym->as && sym->as->rank) | |
4192 | { | |
4193 | for (i = 0; i < sym->as->rank; i++) | |
4194 | { | |
4195 | generate_expr_decls (sym, sym->as->lower[i]); | |
4196 | generate_expr_decls (sym, sym->as->upper[i]); | |
4197 | } | |
4198 | } | |
4199 | } | |
4200 | ||
4201 | ||
4ee9c684 | 4202 | /* Generate decls for all local variables. We do this to ensure correct |
4203 | handling of expressions which only appear in the specification of | |
4204 | other functions. */ | |
4205 | ||
4206 | static void | |
4207 | generate_local_decl (gfc_symbol * sym) | |
4208 | { | |
4209 | if (sym->attr.flavor == FL_VARIABLE) | |
4210 | { | |
d95efb59 | 4211 | if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master) |
8714fc76 | 4212 | generate_dependency_declarations (sym); |
d95efb59 | 4213 | |
4ee9c684 | 4214 | if (sym->attr.referenced) |
8714fc76 | 4215 | gfc_get_symbol_decl (sym); |
4acad347 | 4216 | |
4217 | /* Warnings for unused dummy arguments. */ | |
4218 | else if (sym->attr.dummy) | |
7c0ca46e | 4219 | { |
4acad347 | 4220 | /* INTENT(out) dummy arguments are likely meant to be set. */ |
4221 | if (gfc_option.warn_unused_dummy_argument | |
4222 | && sym->attr.intent == INTENT_OUT) | |
4223 | { | |
4224 | if (sym->ts.type != BT_DERIVED) | |
4225 | gfc_warning ("Dummy argument '%s' at %L was declared " | |
4226 | "INTENT(OUT) but was not set", sym->name, | |
4227 | &sym->declared_at); | |
4228 | else if (!gfc_has_default_initializer (sym->ts.u.derived)) | |
4229 | gfc_warning ("Derived-type dummy argument '%s' at %L was " | |
4230 | "declared INTENT(OUT) but was not set and " | |
4231 | "does not have a default initializer", | |
4232 | sym->name, &sym->declared_at); | |
4233 | } | |
4234 | else if (gfc_option.warn_unused_dummy_argument) | |
4235 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, | |
4236 | &sym->declared_at); | |
7c0ca46e | 4237 | } |
4acad347 | 4238 | |
f888a3fb | 4239 | /* Warn for unused variables, but not if they're inside a common |
72c9bfbc | 4240 | block, a namelist, or are use-associated. */ |
36609028 | 4241 | else if (warn_unused_variable |
72c9bfbc | 4242 | && !(sym->attr.in_common || sym->attr.use_assoc || sym->mark |
4243 | || sym->attr.in_namelist)) | |
6ecfe89d | 4244 | gfc_warning ("Unused variable '%s' declared at %L", sym->name, |
d974cfde | 4245 | &sym->declared_at); |
8714fc76 | 4246 | |
d4163395 | 4247 | /* For variable length CHARACTER parameters, the PARM_DECL already |
4248 | references the length variable, so force gfc_get_symbol_decl | |
4249 | even when not referenced. If optimize > 0, it will be optimized | |
4250 | away anyway. But do this only after emitting -Wunused-parameter | |
4251 | warning if requested. */ | |
8714fc76 | 4252 | if (sym->attr.dummy && !sym->attr.referenced |
4253 | && sym->ts.type == BT_CHARACTER | |
eeebe20b | 4254 | && sym->ts.u.cl->backend_decl != NULL |
4255 | && TREE_CODE (sym->ts.u.cl->backend_decl) == VAR_DECL) | |
d4163395 | 4256 | { |
4257 | sym->attr.referenced = 1; | |
4258 | gfc_get_symbol_decl (sym); | |
4259 | } | |
76776e6d | 4260 | |
d0163401 | 4261 | /* INTENT(out) dummy arguments and result variables with allocatable |
4262 | components are reset by default and need to be set referenced to | |
4263 | generate the code for nullification and automatic lengths. */ | |
4264 | if (!sym->attr.referenced | |
8714fc76 | 4265 | && sym->ts.type == BT_DERIVED |
eeebe20b | 4266 | && sym->ts.u.derived->attr.alloc_comp |
c49db15e | 4267 | && !sym->attr.pointer |
d0163401 | 4268 | && ((sym->attr.dummy && sym->attr.intent == INTENT_OUT) |
4269 | || | |
4270 | (sym->attr.result && sym != sym->result))) | |
8714fc76 | 4271 | { |
4272 | sym->attr.referenced = 1; | |
4273 | gfc_get_symbol_decl (sym); | |
4274 | } | |
4275 | ||
e72f979a | 4276 | /* Check for dependencies in the array specification and string |
4277 | length, adding the necessary declarations to the function. We | |
4278 | mark the symbol now, as well as in traverse_ns, to prevent | |
4279 | getting stuck in a circular dependency. */ | |
4280 | sym->mark = 1; | |
4281 | ||
76776e6d | 4282 | /* We do not want the middle-end to warn about unused parameters |
4283 | as this was already done above. */ | |
4284 | if (sym->attr.dummy && sym->backend_decl != NULL_TREE) | |
4285 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4ee9c684 | 4286 | } |
5dd246c1 | 4287 | else if (sym->attr.flavor == FL_PARAMETER) |
4288 | { | |
6ecfe89d | 4289 | if (warn_unused_parameter |
5dd246c1 | 4290 | && !sym->attr.referenced |
4291 | && !sym->attr.use_assoc) | |
6ecfe89d | 4292 | gfc_warning ("Unused parameter '%s' declared at %L", sym->name, |
5dd246c1 | 4293 | &sym->declared_at); |
4294 | } | |
fa7b6574 | 4295 | else if (sym->attr.flavor == FL_PROCEDURE) |
4296 | { | |
4297 | /* TODO: move to the appropriate place in resolve.c. */ | |
4298 | if (warn_return_type | |
4299 | && sym->attr.function | |
4300 | && sym->result | |
4301 | && sym != sym->result | |
4302 | && !sym->result->attr.referenced | |
4303 | && !sym->attr.use_assoc | |
4304 | && sym->attr.if_source != IFSRC_IFBODY) | |
4305 | { | |
4306 | gfc_warning ("Return value '%s' of function '%s' declared at " | |
4307 | "%L not set", sym->result->name, sym->name, | |
4308 | &sym->result->declared_at); | |
4309 | ||
4310 | /* Prevents "Unused variable" warning for RESULT variables. */ | |
e72f979a | 4311 | sym->result->mark = 1; |
fa7b6574 | 4312 | } |
4313 | } | |
c5d33754 | 4314 | |
19ba2ad8 | 4315 | if (sym->attr.dummy == 1) |
4316 | { | |
4317 | /* Modify the tree type for scalar character dummy arguments of bind(c) | |
4318 | procedures if they are passed by value. The tree type for them will | |
4319 | be promoted to INTEGER_TYPE for the middle end, which appears to be | |
4320 | what C would do with characters passed by-value. The value attribute | |
4321 | implies the dummy is a scalar. */ | |
4322 | if (sym->attr.value == 1 && sym->backend_decl != NULL | |
4323 | && sym->ts.type == BT_CHARACTER && sym->ts.is_c_interop | |
4324 | && sym->ns->proc_name != NULL && sym->ns->proc_name->attr.is_bind_c) | |
4c47c8b7 | 4325 | gfc_conv_scalar_char_value (sym, NULL, NULL); |
19ba2ad8 | 4326 | } |
4327 | ||
c5d33754 | 4328 | /* Make sure we convert the types of the derived types from iso_c_binding |
4329 | into (void *). */ | |
4330 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
4331 | && sym->ts.type == BT_DERIVED) | |
4332 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
4ee9c684 | 4333 | } |
4334 | ||
4335 | static void | |
4336 | generate_local_vars (gfc_namespace * ns) | |
4337 | { | |
4338 | gfc_traverse_ns (ns, generate_local_decl); | |
4339 | } | |
4340 | ||
4341 | ||
1b716045 | 4342 | /* Generate a switch statement to jump to the correct entry point. Also |
4343 | creates the label decls for the entry points. */ | |
4ee9c684 | 4344 | |
1b716045 | 4345 | static tree |
4346 | gfc_trans_entry_master_switch (gfc_entry_list * el) | |
4ee9c684 | 4347 | { |
1b716045 | 4348 | stmtblock_t block; |
4349 | tree label; | |
4350 | tree tmp; | |
4351 | tree val; | |
4ee9c684 | 4352 | |
1b716045 | 4353 | gfc_init_block (&block); |
4354 | for (; el; el = el->next) | |
4355 | { | |
4356 | /* Add the case label. */ | |
b797d6d3 | 4357 | label = gfc_build_label_decl (NULL_TREE); |
7016c612 | 4358 | val = build_int_cst (gfc_array_index_type, el->id); |
ed52ef8b | 4359 | tmp = build3_v (CASE_LABEL_EXPR, val, NULL_TREE, label); |
1b716045 | 4360 | gfc_add_expr_to_block (&block, tmp); |
5b11d932 | 4361 | |
1b716045 | 4362 | /* And jump to the actual entry point. */ |
4363 | label = gfc_build_label_decl (NULL_TREE); | |
1b716045 | 4364 | tmp = build1_v (GOTO_EXPR, label); |
4365 | gfc_add_expr_to_block (&block, tmp); | |
4366 | ||
4367 | /* Save the label decl. */ | |
4368 | el->label = label; | |
4369 | } | |
4370 | tmp = gfc_finish_block (&block); | |
4371 | /* The first argument selects the entry point. */ | |
4372 | val = DECL_ARGUMENTS (current_function_decl); | |
ed52ef8b | 4373 | tmp = build3_v (SWITCH_EXPR, val, tmp, NULL_TREE); |
1b716045 | 4374 | return tmp; |
4ee9c684 | 4375 | } |
4376 | ||
6374121b | 4377 | |
a4abf8a0 | 4378 | /* Add code to string lengths of actual arguments passed to a function against |
4379 | the expected lengths of the dummy arguments. */ | |
4380 | ||
4381 | static void | |
4382 | add_argument_checking (stmtblock_t *block, gfc_symbol *sym) | |
4383 | { | |
4384 | gfc_formal_arglist *formal; | |
4385 | ||
4386 | for (formal = sym->formal; formal; formal = formal->next) | |
4387 | if (formal->sym && formal->sym->ts.type == BT_CHARACTER) | |
4388 | { | |
4389 | enum tree_code comparison; | |
4390 | tree cond; | |
4391 | tree argname; | |
4392 | gfc_symbol *fsym; | |
4393 | gfc_charlen *cl; | |
4394 | const char *message; | |
4395 | ||
4396 | fsym = formal->sym; | |
eeebe20b | 4397 | cl = fsym->ts.u.cl; |
a4abf8a0 | 4398 | |
4399 | gcc_assert (cl); | |
4400 | gcc_assert (cl->passed_length != NULL_TREE); | |
4401 | gcc_assert (cl->backend_decl != NULL_TREE); | |
4402 | ||
4403 | /* For POINTER, ALLOCATABLE and assumed-shape dummy arguments, the | |
4404 | string lengths must match exactly. Otherwise, it is only required | |
be4be771 | 4405 | that the actual string length is *at least* the expected one. |
4406 | Sequence association allows for a mismatch of the string length | |
4407 | if the actual argument is (part of) an array, but only if the | |
4408 | dummy argument is an array. (See "Sequence association" in | |
4409 | Section 12.4.1.4 for F95 and 12.4.1.5 for F2003.) */ | |
a4abf8a0 | 4410 | if (fsym->attr.pointer || fsym->attr.allocatable |
4411 | || (fsym->as && fsym->as->type == AS_ASSUMED_SHAPE)) | |
4412 | { | |
4413 | comparison = NE_EXPR; | |
4414 | message = _("Actual string length does not match the declared one" | |
4415 | " for dummy argument '%s' (%ld/%ld)"); | |
4416 | } | |
be4be771 | 4417 | else if (fsym->as && fsym->as->rank != 0) |
4418 | continue; | |
a4abf8a0 | 4419 | else |
4420 | { | |
4421 | comparison = LT_EXPR; | |
4422 | message = _("Actual string length is shorter than the declared one" | |
4423 | " for dummy argument '%s' (%ld/%ld)"); | |
4424 | } | |
4425 | ||
4426 | /* Build the condition. For optional arguments, an actual length | |
4427 | of 0 is also acceptable if the associated string is NULL, which | |
4428 | means the argument was not passed. */ | |
fd779e1d | 4429 | cond = fold_build2_loc (input_location, comparison, boolean_type_node, |
4430 | cl->passed_length, cl->backend_decl); | |
a4abf8a0 | 4431 | if (fsym->attr.optional) |
4432 | { | |
4433 | tree not_absent; | |
4434 | tree not_0length; | |
4435 | tree absent_failed; | |
4436 | ||
fd779e1d | 4437 | not_0length = fold_build2_loc (input_location, NE_EXPR, |
4438 | boolean_type_node, | |
4439 | cl->passed_length, | |
385f3f36 | 4440 | build_zero_cst (gfc_charlen_type_node)); |
5fa0fdc2 | 4441 | /* The symbol needs to be referenced for gfc_get_symbol_decl. */ |
4442 | fsym->attr.referenced = 1; | |
4443 | not_absent = gfc_conv_expr_present (fsym); | |
a4abf8a0 | 4444 | |
fd779e1d | 4445 | absent_failed = fold_build2_loc (input_location, TRUTH_OR_EXPR, |
4446 | boolean_type_node, not_0length, | |
4447 | not_absent); | |
a4abf8a0 | 4448 | |
fd779e1d | 4449 | cond = fold_build2_loc (input_location, TRUTH_AND_EXPR, |
4450 | boolean_type_node, cond, absent_failed); | |
a4abf8a0 | 4451 | } |
4452 | ||
4453 | /* Build the runtime check. */ | |
4454 | argname = gfc_build_cstring_const (fsym->name); | |
4455 | argname = gfc_build_addr_expr (pchar_type_node, argname); | |
4456 | gfc_trans_runtime_check (true, false, cond, block, &fsym->declared_at, | |
4457 | message, argname, | |
4458 | fold_convert (long_integer_type_node, | |
4459 | cl->passed_length), | |
4460 | fold_convert (long_integer_type_node, | |
4461 | cl->backend_decl)); | |
4462 | } | |
4463 | } | |
4464 | ||
4465 | ||
70b5944a | 4466 | void |
4467 | gfc_init_coarray_decl (void) | |
4468 | { | |
4469 | tree save_fn_decl = current_function_decl; | |
4470 | ||
4471 | if (gfc_option.coarray != GFC_FCOARRAY_LIB) | |
4472 | return; | |
4473 | ||
4474 | if (gfort_gvar_caf_this_image || gfort_gvar_caf_num_images) | |
4475 | return; | |
4476 | ||
4477 | save_fn_decl = current_function_decl; | |
4478 | current_function_decl = NULL_TREE; | |
4479 | push_cfun (cfun); | |
4480 | ||
4481 | gfort_gvar_caf_this_image = gfc_create_var (integer_type_node, | |
4482 | PREFIX("caf_this_image")); | |
4483 | DECL_ARTIFICIAL (gfort_gvar_caf_this_image) = 1; | |
4484 | TREE_USED (gfort_gvar_caf_this_image) = 1; | |
4485 | TREE_PUBLIC (gfort_gvar_caf_this_image) = 1; | |
4486 | TREE_STATIC (gfort_gvar_caf_this_image) = 1; | |
4487 | ||
4488 | gfort_gvar_caf_num_images = gfc_create_var (integer_type_node, | |
4489 | PREFIX("caf_num_images")); | |
4490 | DECL_ARTIFICIAL (gfort_gvar_caf_num_images) = 1; | |
4491 | TREE_USED (gfort_gvar_caf_num_images) = 1; | |
4492 | TREE_PUBLIC (gfort_gvar_caf_num_images) = 1; | |
4493 | TREE_STATIC (gfort_gvar_caf_num_images) = 1; | |
4494 | ||
4495 | pop_cfun (); | |
4496 | current_function_decl = save_fn_decl; | |
4497 | } | |
4498 | ||
4499 | ||
7257a5d2 | 4500 | static void |
4501 | create_main_function (tree fndecl) | |
4502 | { | |
43702da6 | 4503 | tree old_context; |
7257a5d2 | 4504 | tree ftn_main; |
4505 | tree tmp, decl, result_decl, argc, argv, typelist, arglist; | |
4506 | stmtblock_t body; | |
4507 | ||
43702da6 | 4508 | old_context = current_function_decl; |
4509 | ||
4510 | if (old_context) | |
4511 | { | |
4512 | push_function_context (); | |
4513 | saved_parent_function_decls = saved_function_decls; | |
4514 | saved_function_decls = NULL_TREE; | |
4515 | } | |
4516 | ||
7257a5d2 | 4517 | /* main() function must be declared with global scope. */ |
4518 | gcc_assert (current_function_decl == NULL_TREE); | |
4519 | ||
4520 | /* Declare the function. */ | |
4521 | tmp = build_function_type_list (integer_type_node, integer_type_node, | |
4522 | build_pointer_type (pchar_type_node), | |
4523 | NULL_TREE); | |
0509d0ee | 4524 | main_identifier_node = get_identifier ("main"); |
e60a6f7b | 4525 | ftn_main = build_decl (input_location, FUNCTION_DECL, |
4526 | main_identifier_node, tmp); | |
7257a5d2 | 4527 | DECL_EXTERNAL (ftn_main) = 0; |
4528 | TREE_PUBLIC (ftn_main) = 1; | |
4529 | TREE_STATIC (ftn_main) = 1; | |
4530 | DECL_ATTRIBUTES (ftn_main) | |
4531 | = tree_cons (get_identifier("externally_visible"), NULL_TREE, NULL_TREE); | |
4532 | ||
4533 | /* Setup the result declaration (for "return 0"). */ | |
e60a6f7b | 4534 | result_decl = build_decl (input_location, |
4535 | RESULT_DECL, NULL_TREE, integer_type_node); | |
7257a5d2 | 4536 | DECL_ARTIFICIAL (result_decl) = 1; |
4537 | DECL_IGNORED_P (result_decl) = 1; | |
4538 | DECL_CONTEXT (result_decl) = ftn_main; | |
4539 | DECL_RESULT (ftn_main) = result_decl; | |
4540 | ||
4541 | pushdecl (ftn_main); | |
4542 | ||
4543 | /* Get the arguments. */ | |
4544 | ||
4545 | arglist = NULL_TREE; | |
4546 | typelist = TYPE_ARG_TYPES (TREE_TYPE (ftn_main)); | |
4547 | ||
4548 | tmp = TREE_VALUE (typelist); | |
e60a6f7b | 4549 | argc = build_decl (input_location, PARM_DECL, get_identifier ("argc"), tmp); |
7257a5d2 | 4550 | DECL_CONTEXT (argc) = ftn_main; |
4551 | DECL_ARG_TYPE (argc) = TREE_VALUE (typelist); | |
4552 | TREE_READONLY (argc) = 1; | |
4553 | gfc_finish_decl (argc); | |
4554 | arglist = chainon (arglist, argc); | |
4555 | ||
4556 | typelist = TREE_CHAIN (typelist); | |
4557 | tmp = TREE_VALUE (typelist); | |
e60a6f7b | 4558 | argv = build_decl (input_location, PARM_DECL, get_identifier ("argv"), tmp); |
7257a5d2 | 4559 | DECL_CONTEXT (argv) = ftn_main; |
4560 | DECL_ARG_TYPE (argv) = TREE_VALUE (typelist); | |
4561 | TREE_READONLY (argv) = 1; | |
4562 | DECL_BY_REFERENCE (argv) = 1; | |
4563 | gfc_finish_decl (argv); | |
4564 | arglist = chainon (arglist, argv); | |
4565 | ||
4566 | DECL_ARGUMENTS (ftn_main) = arglist; | |
4567 | current_function_decl = ftn_main; | |
4568 | announce_function (ftn_main); | |
4569 | ||
4570 | rest_of_decl_compilation (ftn_main, 1, 0); | |
4571 | make_decl_rtl (ftn_main); | |
4572 | init_function_start (ftn_main); | |
4573 | pushlevel (0); | |
4574 | ||
4575 | gfc_init_block (&body); | |
4576 | ||
4577 | /* Call some libgfortran initialization routines, call then MAIN__(). */ | |
4578 | ||
70b5944a | 4579 | /* Call _gfortran_caf_init (*argc, ***argv, *this_image, *num_images). */ |
4580 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
4581 | { | |
4582 | tree pint_type, pppchar_type; | |
4583 | pint_type = build_pointer_type (integer_type_node); | |
4584 | pppchar_type | |
4585 | = build_pointer_type (build_pointer_type (pchar_type_node)); | |
4586 | ||
4587 | gfc_init_coarray_decl (); | |
4588 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_init, 4, | |
4589 | gfc_build_addr_expr (pint_type, argc), | |
4590 | gfc_build_addr_expr (pppchar_type, argv), | |
4591 | gfc_build_addr_expr (pint_type, gfort_gvar_caf_this_image), | |
4592 | gfc_build_addr_expr (pint_type, gfort_gvar_caf_num_images)); | |
4593 | gfc_add_expr_to_block (&body, tmp); | |
4594 | } | |
4595 | ||
7257a5d2 | 4596 | /* Call _gfortran_set_args (argc, argv). */ |
43702da6 | 4597 | TREE_USED (argc) = 1; |
4598 | TREE_USED (argv) = 1; | |
389dd41b | 4599 | tmp = build_call_expr_loc (input_location, |
4600 | gfor_fndecl_set_args, 2, argc, argv); | |
7257a5d2 | 4601 | gfc_add_expr_to_block (&body, tmp); |
4602 | ||
4603 | /* Add a call to set_options to set up the runtime library Fortran | |
4604 | language standard parameters. */ | |
4605 | { | |
4606 | tree array_type, array, var; | |
06f13dc1 | 4607 | VEC(constructor_elt,gc) *v = NULL; |
7257a5d2 | 4608 | |
4609 | /* Passing a new option to the library requires four modifications: | |
4610 | + add it to the tree_cons list below | |
4611 | + change the array size in the call to build_array_type | |
4612 | + change the first argument to the library call | |
4613 | gfor_fndecl_set_options | |
4614 | + modify the library (runtime/compile_options.c)! */ | |
4615 | ||
06f13dc1 | 4616 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
4617 | build_int_cst (integer_type_node, | |
4618 | gfc_option.warn_std)); | |
4619 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4620 | build_int_cst (integer_type_node, | |
4621 | gfc_option.allow_std)); | |
4622 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4623 | build_int_cst (integer_type_node, pedantic)); | |
4624 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4625 | build_int_cst (integer_type_node, | |
4626 | gfc_option.flag_dump_core)); | |
4627 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4628 | build_int_cst (integer_type_node, | |
4629 | gfc_option.flag_backtrace)); | |
4630 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4631 | build_int_cst (integer_type_node, | |
4632 | gfc_option.flag_sign_zero)); | |
4633 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4634 | build_int_cst (integer_type_node, | |
4635 | (gfc_option.rtcheck | |
4636 | & GFC_RTCHECK_BOUNDS))); | |
4637 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4638 | build_int_cst (integer_type_node, | |
4639 | gfc_option.flag_range_check)); | |
7257a5d2 | 4640 | |
4641 | array_type = build_array_type (integer_type_node, | |
4642 | build_index_type (build_int_cst (NULL_TREE, 7))); | |
06f13dc1 | 4643 | array = build_constructor (array_type, v); |
7257a5d2 | 4644 | TREE_CONSTANT (array) = 1; |
4645 | TREE_STATIC (array) = 1; | |
4646 | ||
4647 | /* Create a static variable to hold the jump table. */ | |
4648 | var = gfc_create_var (array_type, "options"); | |
4649 | TREE_CONSTANT (var) = 1; | |
4650 | TREE_STATIC (var) = 1; | |
4651 | TREE_READONLY (var) = 1; | |
4652 | DECL_INITIAL (var) = array; | |
4653 | var = gfc_build_addr_expr (build_pointer_type (integer_type_node), var); | |
4654 | ||
389dd41b | 4655 | tmp = build_call_expr_loc (input_location, |
4656 | gfor_fndecl_set_options, 2, | |
7257a5d2 | 4657 | build_int_cst (integer_type_node, 8), var); |
4658 | gfc_add_expr_to_block (&body, tmp); | |
4659 | } | |
4660 | ||
4661 | /* If -ffpe-trap option was provided, add a call to set_fpe so that | |
4662 | the library will raise a FPE when needed. */ | |
4663 | if (gfc_option.fpe != 0) | |
4664 | { | |
389dd41b | 4665 | tmp = build_call_expr_loc (input_location, |
4666 | gfor_fndecl_set_fpe, 1, | |
7257a5d2 | 4667 | build_int_cst (integer_type_node, |
4668 | gfc_option.fpe)); | |
4669 | gfc_add_expr_to_block (&body, tmp); | |
4670 | } | |
4671 | ||
4672 | /* If this is the main program and an -fconvert option was provided, | |
4673 | add a call to set_convert. */ | |
4674 | ||
4675 | if (gfc_option.convert != GFC_CONVERT_NATIVE) | |
4676 | { | |
389dd41b | 4677 | tmp = build_call_expr_loc (input_location, |
4678 | gfor_fndecl_set_convert, 1, | |
7257a5d2 | 4679 | build_int_cst (integer_type_node, |
4680 | gfc_option.convert)); | |
4681 | gfc_add_expr_to_block (&body, tmp); | |
4682 | } | |
4683 | ||
4684 | /* If this is the main program and an -frecord-marker option was provided, | |
4685 | add a call to set_record_marker. */ | |
4686 | ||
4687 | if (gfc_option.record_marker != 0) | |
4688 | { | |
389dd41b | 4689 | tmp = build_call_expr_loc (input_location, |
4690 | gfor_fndecl_set_record_marker, 1, | |
7257a5d2 | 4691 | build_int_cst (integer_type_node, |
4692 | gfc_option.record_marker)); | |
4693 | gfc_add_expr_to_block (&body, tmp); | |
4694 | } | |
4695 | ||
4696 | if (gfc_option.max_subrecord_length != 0) | |
4697 | { | |
389dd41b | 4698 | tmp = build_call_expr_loc (input_location, |
4699 | gfor_fndecl_set_max_subrecord_length, 1, | |
7257a5d2 | 4700 | build_int_cst (integer_type_node, |
4701 | gfc_option.max_subrecord_length)); | |
4702 | gfc_add_expr_to_block (&body, tmp); | |
4703 | } | |
4704 | ||
4705 | /* Call MAIN__(). */ | |
389dd41b | 4706 | tmp = build_call_expr_loc (input_location, |
4707 | fndecl, 0); | |
7257a5d2 | 4708 | gfc_add_expr_to_block (&body, tmp); |
4709 | ||
43702da6 | 4710 | /* Mark MAIN__ as used. */ |
4711 | TREE_USED (fndecl) = 1; | |
4712 | ||
70b5944a | 4713 | /* Coarray: Call _gfortran_caf_finalize(void). */ |
4714 | if (gfc_option.coarray == GFC_FCOARRAY_LIB) | |
4715 | { | |
4716 | /* Per F2008, 8.5.1 END of the main program implies a | |
4717 | SYNC MEMORY. */ | |
4718 | tmp = built_in_decls [BUILT_IN_SYNCHRONIZE]; | |
4719 | tmp = build_call_expr_loc (input_location, tmp, 0); | |
4720 | gfc_add_expr_to_block (&body, tmp); | |
4721 | ||
4722 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_finalize, 0); | |
4723 | gfc_add_expr_to_block (&body, tmp); | |
4724 | } | |
4725 | ||
7257a5d2 | 4726 | /* "return 0". */ |
fd779e1d | 4727 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, integer_type_node, |
4728 | DECL_RESULT (ftn_main), | |
4729 | build_int_cst (integer_type_node, 0)); | |
7257a5d2 | 4730 | tmp = build1_v (RETURN_EXPR, tmp); |
4731 | gfc_add_expr_to_block (&body, tmp); | |
4732 | ||
4733 | ||
4734 | DECL_SAVED_TREE (ftn_main) = gfc_finish_block (&body); | |
4735 | decl = getdecls (); | |
4736 | ||
4737 | /* Finish off this function and send it for code generation. */ | |
4738 | poplevel (1, 0, 1); | |
4739 | BLOCK_SUPERCONTEXT (DECL_INITIAL (ftn_main)) = ftn_main; | |
4740 | ||
4741 | DECL_SAVED_TREE (ftn_main) | |
4742 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (ftn_main), | |
4743 | DECL_INITIAL (ftn_main)); | |
4744 | ||
4745 | /* Output the GENERIC tree. */ | |
4746 | dump_function (TDI_original, ftn_main); | |
4747 | ||
bb982f66 | 4748 | cgraph_finalize_function (ftn_main, true); |
43702da6 | 4749 | |
4750 | if (old_context) | |
4751 | { | |
4752 | pop_function_context (); | |
4753 | saved_function_decls = saved_parent_function_decls; | |
4754 | } | |
4755 | current_function_decl = old_context; | |
7257a5d2 | 4756 | } |
4757 | ||
4758 | ||
89ac8ba1 | 4759 | /* Get the result expression for a procedure. */ |
4760 | ||
4761 | static tree | |
4762 | get_proc_result (gfc_symbol* sym) | |
4763 | { | |
4764 | if (sym->attr.subroutine || sym == sym->result) | |
4765 | { | |
4766 | if (current_fake_result_decl != NULL) | |
4767 | return TREE_VALUE (current_fake_result_decl); | |
4768 | ||
4769 | return NULL_TREE; | |
4770 | } | |
4771 | ||
4772 | return sym->result->backend_decl; | |
4773 | } | |
4774 | ||
4775 | ||
4776 | /* Generate an appropriate return-statement for a procedure. */ | |
4777 | ||
4778 | tree | |
4779 | gfc_generate_return (void) | |
4780 | { | |
4781 | gfc_symbol* sym; | |
4782 | tree result; | |
4783 | tree fndecl; | |
4784 | ||
4785 | sym = current_procedure_symbol; | |
4786 | fndecl = sym->backend_decl; | |
4787 | ||
4788 | if (TREE_TYPE (DECL_RESULT (fndecl)) == void_type_node) | |
4789 | result = NULL_TREE; | |
4790 | else | |
4791 | { | |
4792 | result = get_proc_result (sym); | |
4793 | ||
4794 | /* Set the return value to the dummy result variable. The | |
4795 | types may be different for scalar default REAL functions | |
4796 | with -ff2c, therefore we have to convert. */ | |
4797 | if (result != NULL_TREE) | |
4798 | { | |
4799 | result = convert (TREE_TYPE (DECL_RESULT (fndecl)), result); | |
fd779e1d | 4800 | result = fold_build2_loc (input_location, MODIFY_EXPR, |
4801 | TREE_TYPE (result), DECL_RESULT (fndecl), | |
4802 | result); | |
89ac8ba1 | 4803 | } |
4804 | } | |
4805 | ||
4806 | return build1_v (RETURN_EXPR, result); | |
4807 | } | |
4808 | ||
4809 | ||
4ee9c684 | 4810 | /* Generate code for a function. */ |
4811 | ||
4812 | void | |
4813 | gfc_generate_function_code (gfc_namespace * ns) | |
4814 | { | |
4815 | tree fndecl; | |
4816 | tree old_context; | |
4817 | tree decl; | |
4818 | tree tmp; | |
89ac8ba1 | 4819 | stmtblock_t init, cleanup; |
4ee9c684 | 4820 | stmtblock_t body; |
89ac8ba1 | 4821 | gfc_wrapped_block try_block; |
5fa0fdc2 | 4822 | tree recurcheckvar = NULL_TREE; |
4ee9c684 | 4823 | gfc_symbol *sym; |
89ac8ba1 | 4824 | gfc_symbol *previous_procedure_symbol; |
2294b616 | 4825 | int rank; |
e50e62f5 | 4826 | bool is_recursive; |
4ee9c684 | 4827 | |
4828 | sym = ns->proc_name; | |
89ac8ba1 | 4829 | previous_procedure_symbol = current_procedure_symbol; |
4830 | current_procedure_symbol = sym; | |
1b716045 | 4831 | |
4ee9c684 | 4832 | /* Check that the frontend isn't still using this. */ |
22d678e8 | 4833 | gcc_assert (sym->tlink == NULL); |
4ee9c684 | 4834 | sym->tlink = sym; |
4835 | ||
4836 | /* Create the declaration for functions with global scope. */ | |
4837 | if (!sym->backend_decl) | |
d896f9b3 | 4838 | gfc_create_function_decl (ns, false); |
4ee9c684 | 4839 | |
4840 | fndecl = sym->backend_decl; | |
4841 | old_context = current_function_decl; | |
4842 | ||
4843 | if (old_context) | |
4844 | { | |
4845 | push_function_context (); | |
4846 | saved_parent_function_decls = saved_function_decls; | |
4847 | saved_function_decls = NULL_TREE; | |
4848 | } | |
4849 | ||
1b716045 | 4850 | trans_function_start (sym); |
4ee9c684 | 4851 | |
89ac8ba1 | 4852 | gfc_init_block (&init); |
4ee9c684 | 4853 | |
c6871095 | 4854 | if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER) |
4855 | { | |
4856 | /* Copy length backend_decls to all entry point result | |
4857 | symbols. */ | |
4858 | gfc_entry_list *el; | |
4859 | tree backend_decl; | |
4860 | ||
eeebe20b | 4861 | gfc_conv_const_charlen (ns->proc_name->ts.u.cl); |
4862 | backend_decl = ns->proc_name->result->ts.u.cl->backend_decl; | |
c6871095 | 4863 | for (el = ns->entries; el; el = el->next) |
eeebe20b | 4864 | el->sym->result->ts.u.cl->backend_decl = backend_decl; |
c6871095 | 4865 | } |
4866 | ||
4ee9c684 | 4867 | /* Translate COMMON blocks. */ |
4868 | gfc_trans_common (ns); | |
4869 | ||
c750cc52 | 4870 | /* Null the parent fake result declaration if this namespace is |
4871 | a module function or an external procedures. */ | |
4872 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
4873 | || ns->parent == NULL) | |
4874 | parent_fake_result_decl = NULL_TREE; | |
4875 | ||
2b685f8e | 4876 | gfc_generate_contained_functions (ns); |
4877 | ||
9579733e | 4878 | nonlocal_dummy_decls = NULL; |
4879 | nonlocal_dummy_decl_pset = NULL; | |
4880 | ||
4ee9c684 | 4881 | generate_local_vars (ns); |
5b11d932 | 4882 | |
c750cc52 | 4883 | /* Keep the parent fake result declaration in module functions |
4884 | or external procedures. */ | |
4885 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
4886 | || ns->parent == NULL) | |
4887 | current_fake_result_decl = parent_fake_result_decl; | |
4888 | else | |
4889 | current_fake_result_decl = NULL_TREE; | |
4890 | ||
89ac8ba1 | 4891 | is_recursive = sym->attr.recursive |
4892 | || (sym->attr.entry_master | |
4893 | && sym->ns->entries->sym->attr.recursive); | |
4894 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
4895 | && !is_recursive | |
4896 | && !gfc_option.flag_recursive) | |
4897 | { | |
4898 | char * msg; | |
4899 | ||
4900 | asprintf (&msg, "Recursive call to nonrecursive procedure '%s'", | |
4901 | sym->name); | |
4902 | recurcheckvar = gfc_create_var (boolean_type_node, "is_recursive"); | |
4903 | TREE_STATIC (recurcheckvar) = 1; | |
4904 | DECL_INITIAL (recurcheckvar) = boolean_false_node; | |
4905 | gfc_add_expr_to_block (&init, recurcheckvar); | |
4906 | gfc_trans_runtime_check (true, false, recurcheckvar, &init, | |
4907 | &sym->declared_at, msg); | |
4908 | gfc_add_modify (&init, recurcheckvar, boolean_true_node); | |
434f0922 | 4909 | free (msg); |
89ac8ba1 | 4910 | } |
4ee9c684 | 4911 | |
4912 | /* Now generate the code for the body of this function. */ | |
4913 | gfc_init_block (&body); | |
4914 | ||
4915 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node | |
89ac8ba1 | 4916 | && sym->attr.subroutine) |
4ee9c684 | 4917 | { |
4918 | tree alternate_return; | |
c750cc52 | 4919 | alternate_return = gfc_get_fake_result_decl (sym, 0); |
75a70cf9 | 4920 | gfc_add_modify (&body, alternate_return, integer_zero_node); |
4ee9c684 | 4921 | } |
4922 | ||
1b716045 | 4923 | if (ns->entries) |
4924 | { | |
4925 | /* Jump to the correct entry point. */ | |
4926 | tmp = gfc_trans_entry_master_switch (ns->entries); | |
4927 | gfc_add_expr_to_block (&body, tmp); | |
4928 | } | |
4929 | ||
a4abf8a0 | 4930 | /* If bounds-checking is enabled, generate code to check passed in actual |
4931 | arguments against the expected dummy argument attributes (e.g. string | |
4932 | lengths). */ | |
c1630d65 | 4933 | if ((gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) && !sym->attr.is_bind_c) |
a4abf8a0 | 4934 | add_argument_checking (&body, sym); |
4935 | ||
4ee9c684 | 4936 | tmp = gfc_trans_code (ns->code); |
4937 | gfc_add_expr_to_block (&body, tmp); | |
4938 | ||
4ee9c684 | 4939 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node) |
4940 | { | |
89ac8ba1 | 4941 | tree result = get_proc_result (sym); |
4ee9c684 | 4942 | |
5fa0fdc2 | 4943 | if (result != NULL_TREE |
4944 | && sym->attr.function | |
4945 | && !sym->attr.pointer) | |
2294b616 | 4946 | { |
deb7edfc | 4947 | if (sym->attr.allocatable && sym->attr.dimension == 0 |
4948 | && sym->result == sym) | |
4949 | gfc_add_modify (&init, result, fold_convert (TREE_TYPE (result), | |
4950 | null_pointer_node)); | |
4951 | else if (sym->ts.type == BT_DERIVED | |
4952 | && sym->ts.u.derived->attr.alloc_comp | |
4953 | && !sym->attr.allocatable) | |
53169279 | 4954 | { |
4955 | rank = sym->as ? sym->as->rank : 0; | |
89ac8ba1 | 4956 | tmp = gfc_nullify_alloc_comp (sym->ts.u.derived, result, rank); |
4957 | gfc_add_expr_to_block (&init, tmp); | |
53169279 | 4958 | } |
5176859a | 4959 | } |
e50e62f5 | 4960 | |
fa7b6574 | 4961 | if (result == NULL_TREE) |
4962 | { | |
4963 | /* TODO: move to the appropriate place in resolve.c. */ | |
4964 | if (warn_return_type && !sym->attr.referenced && sym == sym->result) | |
4965 | gfc_warning ("Return value of function '%s' at %L not set", | |
4966 | sym->name, &sym->declared_at); | |
2294b616 | 4967 | |
fa7b6574 | 4968 | TREE_NO_WARNING(sym->backend_decl) = 1; |
4969 | } | |
4ee9c684 | 4970 | else |
89ac8ba1 | 4971 | gfc_add_expr_to_block (&body, gfc_generate_return ()); |
4ee9c684 | 4972 | } |
89ac8ba1 | 4973 | |
4974 | gfc_init_block (&cleanup); | |
4975 | ||
4976 | /* Reset recursion-check variable. */ | |
4977 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
4978 | && !is_recursive | |
5ae82d58 | 4979 | && !gfc_option.gfc_flag_openmp |
89ac8ba1 | 4980 | && recurcheckvar != NULL_TREE) |
e50e62f5 | 4981 | { |
89ac8ba1 | 4982 | gfc_add_modify (&cleanup, recurcheckvar, boolean_false_node); |
4983 | recurcheckvar = NULL; | |
e50e62f5 | 4984 | } |
2294b616 | 4985 | |
89ac8ba1 | 4986 | /* Finish the function body and add init and cleanup code. */ |
4987 | tmp = gfc_finish_block (&body); | |
4988 | gfc_start_wrapped_block (&try_block, tmp); | |
4989 | /* Add code to create and cleanup arrays. */ | |
4990 | gfc_trans_deferred_vars (sym, &try_block); | |
4991 | gfc_add_init_cleanup (&try_block, gfc_finish_block (&init), | |
4992 | gfc_finish_block (&cleanup)); | |
4ee9c684 | 4993 | |
4994 | /* Add all the decls we created during processing. */ | |
4995 | decl = saved_function_decls; | |
4996 | while (decl) | |
4997 | { | |
4998 | tree next; | |
4999 | ||
1767a056 | 5000 | next = DECL_CHAIN (decl); |
5001 | DECL_CHAIN (decl) = NULL_TREE; | |
4ee9c684 | 5002 | pushdecl (decl); |
5003 | decl = next; | |
5004 | } | |
5005 | saved_function_decls = NULL_TREE; | |
5006 | ||
89ac8ba1 | 5007 | DECL_SAVED_TREE (fndecl) = gfc_finish_wrapped_block (&try_block); |
e5004242 | 5008 | decl = getdecls (); |
4ee9c684 | 5009 | |
5010 | /* Finish off this function and send it for code generation. */ | |
5011 | poplevel (1, 0, 1); | |
5012 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
5013 | ||
e5004242 | 5014 | DECL_SAVED_TREE (fndecl) |
5015 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5016 | DECL_INITIAL (fndecl)); | |
5017 | ||
9579733e | 5018 | if (nonlocal_dummy_decls) |
5019 | { | |
5020 | BLOCK_VARS (DECL_INITIAL (fndecl)) | |
5021 | = chainon (BLOCK_VARS (DECL_INITIAL (fndecl)), nonlocal_dummy_decls); | |
5022 | pointer_set_destroy (nonlocal_dummy_decl_pset); | |
5023 | nonlocal_dummy_decls = NULL; | |
5024 | nonlocal_dummy_decl_pset = NULL; | |
5025 | } | |
5026 | ||
4ee9c684 | 5027 | /* Output the GENERIC tree. */ |
5028 | dump_function (TDI_original, fndecl); | |
5029 | ||
5030 | /* Store the end of the function, so that we get good line number | |
5031 | info for the epilogue. */ | |
5032 | cfun->function_end_locus = input_location; | |
5033 | ||
5034 | /* We're leaving the context of this function, so zap cfun. | |
5035 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
5036 | tree_rest_of_compilation. */ | |
87d4aa85 | 5037 | set_cfun (NULL); |
4ee9c684 | 5038 | |
5039 | if (old_context) | |
5040 | { | |
5041 | pop_function_context (); | |
5042 | saved_function_decls = saved_parent_function_decls; | |
5043 | } | |
5044 | current_function_decl = old_context; | |
5045 | ||
5046 | if (decl_function_context (fndecl)) | |
6374121b | 5047 | /* Register this function with cgraph just far enough to get it |
5048 | added to our parent's nested function list. */ | |
460beda6 | 5049 | (void) cgraph_create_node (fndecl); |
4ee9c684 | 5050 | else |
bb982f66 | 5051 | cgraph_finalize_function (fndecl, true); |
df4d540f | 5052 | |
5053 | gfc_trans_use_stmts (ns); | |
2eb674c9 | 5054 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
7257a5d2 | 5055 | |
5056 | if (sym->attr.is_main_program) | |
5057 | create_main_function (fndecl); | |
89ac8ba1 | 5058 | |
5059 | current_procedure_symbol = previous_procedure_symbol; | |
4ee9c684 | 5060 | } |
5061 | ||
7257a5d2 | 5062 | |
4ee9c684 | 5063 | void |
5064 | gfc_generate_constructors (void) | |
5065 | { | |
22d678e8 | 5066 | gcc_assert (gfc_static_ctors == NULL_TREE); |
4ee9c684 | 5067 | #if 0 |
5068 | tree fnname; | |
5069 | tree type; | |
5070 | tree fndecl; | |
5071 | tree decl; | |
5072 | tree tmp; | |
5073 | ||
5074 | if (gfc_static_ctors == NULL_TREE) | |
5075 | return; | |
5076 | ||
db85cc4f | 5077 | fnname = get_file_function_name ("I"); |
e1036019 | 5078 | type = build_function_type_list (void_type_node, NULL_TREE); |
4ee9c684 | 5079 | |
e60a6f7b | 5080 | fndecl = build_decl (input_location, |
5081 | FUNCTION_DECL, fnname, type); | |
4ee9c684 | 5082 | TREE_PUBLIC (fndecl) = 1; |
5083 | ||
e60a6f7b | 5084 | decl = build_decl (input_location, |
5085 | RESULT_DECL, NULL_TREE, void_type_node); | |
540edea7 | 5086 | DECL_ARTIFICIAL (decl) = 1; |
5087 | DECL_IGNORED_P (decl) = 1; | |
4ee9c684 | 5088 | DECL_CONTEXT (decl) = fndecl; |
5089 | DECL_RESULT (fndecl) = decl; | |
5090 | ||
5091 | pushdecl (fndecl); | |
5092 | ||
5093 | current_function_decl = fndecl; | |
5094 | ||
b2c4af5e | 5095 | rest_of_decl_compilation (fndecl, 1, 0); |
4ee9c684 | 5096 | |
b2c4af5e | 5097 | make_decl_rtl (fndecl); |
4ee9c684 | 5098 | |
b31f705b | 5099 | init_function_start (fndecl); |
4ee9c684 | 5100 | |
4ee9c684 | 5101 | pushlevel (0); |
5102 | ||
5103 | for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors)) | |
5104 | { | |
389dd41b | 5105 | tmp = build_call_expr_loc (input_location, |
5106 | TREE_VALUE (gfc_static_ctors), 0); | |
e60a6f7b | 5107 | DECL_SAVED_TREE (fndecl) = build_stmt (input_location, EXPR_STMT, tmp); |
4ee9c684 | 5108 | } |
5109 | ||
e5004242 | 5110 | decl = getdecls (); |
4ee9c684 | 5111 | poplevel (1, 0, 1); |
5112 | ||
5113 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
e5004242 | 5114 | DECL_SAVED_TREE (fndecl) |
5115 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
5116 | DECL_INITIAL (fndecl)); | |
4ee9c684 | 5117 | |
5118 | free_after_parsing (cfun); | |
5119 | free_after_compilation (cfun); | |
5120 | ||
6148a911 | 5121 | tree_rest_of_compilation (fndecl); |
4ee9c684 | 5122 | |
5123 | current_function_decl = NULL_TREE; | |
5124 | #endif | |
5125 | } | |
5126 | ||
9ec7c303 | 5127 | /* Translates a BLOCK DATA program unit. This means emitting the |
5128 | commons contained therein plus their initializations. We also emit | |
5129 | a globally visible symbol to make sure that each BLOCK DATA program | |
5130 | unit remains unique. */ | |
5131 | ||
5132 | void | |
5133 | gfc_generate_block_data (gfc_namespace * ns) | |
5134 | { | |
5135 | tree decl; | |
5136 | tree id; | |
5137 | ||
b31f705b | 5138 | /* Tell the backend the source location of the block data. */ |
5139 | if (ns->proc_name) | |
5140 | gfc_set_backend_locus (&ns->proc_name->declared_at); | |
5141 | else | |
5142 | gfc_set_backend_locus (&gfc_current_locus); | |
5143 | ||
5144 | /* Process the DATA statements. */ | |
9ec7c303 | 5145 | gfc_trans_common (ns); |
5146 | ||
b31f705b | 5147 | /* Create a global symbol with the mane of the block data. This is to |
5148 | generate linker errors if the same name is used twice. It is never | |
5149 | really used. */ | |
9ec7c303 | 5150 | if (ns->proc_name) |
5151 | id = gfc_sym_mangled_function_id (ns->proc_name); | |
5152 | else | |
5153 | id = get_identifier ("__BLOCK_DATA__"); | |
5154 | ||
e60a6f7b | 5155 | decl = build_decl (input_location, |
5156 | VAR_DECL, id, gfc_array_index_type); | |
9ec7c303 | 5157 | TREE_PUBLIC (decl) = 1; |
5158 | TREE_STATIC (decl) = 1; | |
df4d540f | 5159 | DECL_IGNORED_P (decl) = 1; |
9ec7c303 | 5160 | |
5161 | pushdecl (decl); | |
5162 | rest_of_decl_compilation (decl, 1, 0); | |
5163 | } | |
5164 | ||
b549d2a5 | 5165 | |
6a7084d7 | 5166 | /* Process the local variables of a BLOCK construct. */ |
5167 | ||
5168 | void | |
3c82e013 | 5169 | gfc_process_block_locals (gfc_namespace* ns) |
6a7084d7 | 5170 | { |
5171 | tree decl; | |
5172 | ||
5173 | gcc_assert (saved_local_decls == NULL_TREE); | |
5174 | generate_local_vars (ns); | |
5175 | ||
5176 | decl = saved_local_decls; | |
5177 | while (decl) | |
5178 | { | |
5179 | tree next; | |
5180 | ||
1767a056 | 5181 | next = DECL_CHAIN (decl); |
5182 | DECL_CHAIN (decl) = NULL_TREE; | |
6a7084d7 | 5183 | pushdecl (decl); |
5184 | decl = next; | |
5185 | } | |
5186 | saved_local_decls = NULL_TREE; | |
5187 | } | |
5188 | ||
5189 | ||
4ee9c684 | 5190 | #include "gt-fortran-trans-decl.h" |