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Commit | Line | Data |
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4ee9c684 | 1 | /* Backend function setup |
c1630d65 | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
cfaf579d | 3 | Free Software Foundation, Inc. |
4ee9c684 | 4 | Contributed by Paul Brook |
5 | ||
c84b470d | 6 | This file is part of GCC. |
4ee9c684 | 7 | |
c84b470d | 8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
bdabe786 | 10 | Software Foundation; either version 3, or (at your option) any later |
c84b470d | 11 | version. |
4ee9c684 | 12 | |
c84b470d | 13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
4ee9c684 | 17 | |
18 | You should have received a copy of the GNU General Public License | |
bdabe786 | 19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
4ee9c684 | 21 | |
22 | /* trans-decl.c -- Handling of backend function and variable decls, etc */ | |
23 | ||
24 | #include "config.h" | |
25 | #include "system.h" | |
26 | #include "coretypes.h" | |
cb4070e0 | 27 | #include "tm.h" |
4ee9c684 | 28 | #include "tree.h" |
29 | #include "tree-dump.h" | |
989adef3 | 30 | #include "gimple.h" /* For create_tmp_var_raw. */ |
4ee9c684 | 31 | #include "ggc.h" |
7cbc820e | 32 | #include "diagnostic-core.h" /* For internal_error. */ |
33 | #include "toplev.h" /* For announce_function. */ | |
cb4070e0 | 34 | #include "output.h" /* For decl_default_tls_model. */ |
4ee9c684 | 35 | #include "target.h" |
36 | #include "function.h" | |
4ee9c684 | 37 | #include "flags.h" |
38 | #include "cgraph.h" | |
df4d540f | 39 | #include "debug.h" |
4ee9c684 | 40 | #include "gfortran.h" |
9579733e | 41 | #include "pointer-set.h" |
126387b5 | 42 | #include "constructor.h" |
4ee9c684 | 43 | #include "trans.h" |
44 | #include "trans-types.h" | |
45 | #include "trans-array.h" | |
46 | #include "trans-const.h" | |
47 | /* Only for gfc_trans_code. Shouldn't need to include this. */ | |
48 | #include "trans-stmt.h" | |
49 | ||
50 | #define MAX_LABEL_VALUE 99999 | |
51 | ||
52 | ||
53 | /* Holds the result of the function if no result variable specified. */ | |
54 | ||
55 | static GTY(()) tree current_fake_result_decl; | |
c750cc52 | 56 | static GTY(()) tree parent_fake_result_decl; |
4ee9c684 | 57 | |
4ee9c684 | 58 | |
59 | /* Holds the variable DECLs for the current function. */ | |
60 | ||
d4163395 | 61 | static GTY(()) tree saved_function_decls; |
62 | static GTY(()) tree saved_parent_function_decls; | |
4ee9c684 | 63 | |
9579733e | 64 | static struct pointer_set_t *nonlocal_dummy_decl_pset; |
65 | static GTY(()) tree nonlocal_dummy_decls; | |
4ee9c684 | 66 | |
6a7084d7 | 67 | /* Holds the variable DECLs that are locals. */ |
68 | ||
69 | static GTY(()) tree saved_local_decls; | |
70 | ||
4ee9c684 | 71 | /* The namespace of the module we're currently generating. Only used while |
72 | outputting decls for module variables. Do not rely on this being set. */ | |
73 | ||
74 | static gfc_namespace *module_namespace; | |
75 | ||
89ac8ba1 | 76 | /* The currently processed procedure symbol. */ |
77 | static gfc_symbol* current_procedure_symbol = NULL; | |
78 | ||
4ee9c684 | 79 | |
80 | /* List of static constructor functions. */ | |
81 | ||
82 | tree gfc_static_ctors; | |
83 | ||
84 | ||
85 | /* Function declarations for builtin library functions. */ | |
86 | ||
4ee9c684 | 87 | tree gfor_fndecl_pause_numeric; |
88 | tree gfor_fndecl_pause_string; | |
89 | tree gfor_fndecl_stop_numeric; | |
90 | tree gfor_fndecl_stop_string; | |
070cc790 | 91 | tree gfor_fndecl_error_stop_numeric; |
c6cd3066 | 92 | tree gfor_fndecl_error_stop_string; |
4ee9c684 | 93 | tree gfor_fndecl_runtime_error; |
50ad5fa2 | 94 | tree gfor_fndecl_runtime_error_at; |
da6ffc6d | 95 | tree gfor_fndecl_runtime_warning_at; |
9915365e | 96 | tree gfor_fndecl_os_error; |
50ad5fa2 | 97 | tree gfor_fndecl_generate_error; |
7257a5d2 | 98 | tree gfor_fndecl_set_args; |
8c84a5de | 99 | tree gfor_fndecl_set_fpe; |
56c7c2d7 | 100 | tree gfor_fndecl_set_options; |
15774a8b | 101 | tree gfor_fndecl_set_convert; |
f23886ab | 102 | tree gfor_fndecl_set_record_marker; |
bbaaa7b1 | 103 | tree gfor_fndecl_set_max_subrecord_length; |
b902b078 | 104 | tree gfor_fndecl_ctime; |
105 | tree gfor_fndecl_fdate; | |
dbc97b88 | 106 | tree gfor_fndecl_ttynam; |
4ee9c684 | 107 | tree gfor_fndecl_in_pack; |
108 | tree gfor_fndecl_in_unpack; | |
109 | tree gfor_fndecl_associated; | |
110 | ||
111 | ||
112 | /* Math functions. Many other math functions are handled in | |
113 | trans-intrinsic.c. */ | |
114 | ||
920e54ef | 115 | gfc_powdecl_list gfor_fndecl_math_powi[4][3]; |
4ee9c684 | 116 | tree gfor_fndecl_math_ishftc4; |
117 | tree gfor_fndecl_math_ishftc8; | |
920e54ef | 118 | tree gfor_fndecl_math_ishftc16; |
4ee9c684 | 119 | |
120 | ||
121 | /* String functions. */ | |
122 | ||
4ee9c684 | 123 | tree gfor_fndecl_compare_string; |
124 | tree gfor_fndecl_concat_string; | |
125 | tree gfor_fndecl_string_len_trim; | |
126 | tree gfor_fndecl_string_index; | |
127 | tree gfor_fndecl_string_scan; | |
128 | tree gfor_fndecl_string_verify; | |
129 | tree gfor_fndecl_string_trim; | |
5fcc6ec2 | 130 | tree gfor_fndecl_string_minmax; |
4ee9c684 | 131 | tree gfor_fndecl_adjustl; |
132 | tree gfor_fndecl_adjustr; | |
b44437b9 | 133 | tree gfor_fndecl_select_string; |
40b806de | 134 | tree gfor_fndecl_compare_string_char4; |
135 | tree gfor_fndecl_concat_string_char4; | |
136 | tree gfor_fndecl_string_len_trim_char4; | |
137 | tree gfor_fndecl_string_index_char4; | |
138 | tree gfor_fndecl_string_scan_char4; | |
139 | tree gfor_fndecl_string_verify_char4; | |
140 | tree gfor_fndecl_string_trim_char4; | |
141 | tree gfor_fndecl_string_minmax_char4; | |
142 | tree gfor_fndecl_adjustl_char4; | |
143 | tree gfor_fndecl_adjustr_char4; | |
b44437b9 | 144 | tree gfor_fndecl_select_string_char4; |
145 | ||
146 | ||
147 | /* Conversion between character kinds. */ | |
148 | tree gfor_fndecl_convert_char1_to_char4; | |
149 | tree gfor_fndecl_convert_char4_to_char1; | |
4ee9c684 | 150 | |
151 | ||
152 | /* Other misc. runtime library functions. */ | |
153 | ||
154 | tree gfor_fndecl_size0; | |
155 | tree gfor_fndecl_size1; | |
9b057c29 | 156 | tree gfor_fndecl_iargc; |
70eb4f1a | 157 | tree gfor_fndecl_clz128; |
158 | tree gfor_fndecl_ctz128; | |
4ee9c684 | 159 | |
59e2a584 | 160 | /* Intrinsic functions implemented in Fortran. */ |
161 | tree gfor_fndecl_sc_kind; | |
4ee9c684 | 162 | tree gfor_fndecl_si_kind; |
163 | tree gfor_fndecl_sr_kind; | |
164 | ||
4e8e57b0 | 165 | /* BLAS gemm functions. */ |
166 | tree gfor_fndecl_sgemm; | |
167 | tree gfor_fndecl_dgemm; | |
168 | tree gfor_fndecl_cgemm; | |
169 | tree gfor_fndecl_zgemm; | |
170 | ||
4ee9c684 | 171 | |
172 | static void | |
173 | gfc_add_decl_to_parent_function (tree decl) | |
174 | { | |
22d678e8 | 175 | gcc_assert (decl); |
4ee9c684 | 176 | DECL_CONTEXT (decl) = DECL_CONTEXT (current_function_decl); |
177 | DECL_NONLOCAL (decl) = 1; | |
1767a056 | 178 | DECL_CHAIN (decl) = saved_parent_function_decls; |
4ee9c684 | 179 | saved_parent_function_decls = decl; |
180 | } | |
181 | ||
182 | void | |
183 | gfc_add_decl_to_function (tree decl) | |
184 | { | |
22d678e8 | 185 | gcc_assert (decl); |
4ee9c684 | 186 | TREE_USED (decl) = 1; |
187 | DECL_CONTEXT (decl) = current_function_decl; | |
1767a056 | 188 | DECL_CHAIN (decl) = saved_function_decls; |
4ee9c684 | 189 | saved_function_decls = decl; |
190 | } | |
191 | ||
6a7084d7 | 192 | static void |
193 | add_decl_as_local (tree decl) | |
194 | { | |
195 | gcc_assert (decl); | |
196 | TREE_USED (decl) = 1; | |
197 | DECL_CONTEXT (decl) = current_function_decl; | |
1767a056 | 198 | DECL_CHAIN (decl) = saved_local_decls; |
6a7084d7 | 199 | saved_local_decls = decl; |
200 | } | |
201 | ||
4ee9c684 | 202 | |
b797d6d3 | 203 | /* Build a backend label declaration. Set TREE_USED for named labels. |
204 | The context of the label is always the current_function_decl. All | |
205 | labels are marked artificial. */ | |
4ee9c684 | 206 | |
207 | tree | |
208 | gfc_build_label_decl (tree label_id) | |
209 | { | |
210 | /* 2^32 temporaries should be enough. */ | |
211 | static unsigned int tmp_num = 1; | |
212 | tree label_decl; | |
213 | char *label_name; | |
214 | ||
215 | if (label_id == NULL_TREE) | |
216 | { | |
217 | /* Build an internal label name. */ | |
218 | ASM_FORMAT_PRIVATE_NAME (label_name, "L", tmp_num++); | |
219 | label_id = get_identifier (label_name); | |
220 | } | |
221 | else | |
222 | label_name = NULL; | |
223 | ||
224 | /* Build the LABEL_DECL node. Labels have no type. */ | |
e60a6f7b | 225 | label_decl = build_decl (input_location, |
226 | LABEL_DECL, label_id, void_type_node); | |
4ee9c684 | 227 | DECL_CONTEXT (label_decl) = current_function_decl; |
228 | DECL_MODE (label_decl) = VOIDmode; | |
229 | ||
b797d6d3 | 230 | /* We always define the label as used, even if the original source |
231 | file never references the label. We don't want all kinds of | |
232 | spurious warnings for old-style Fortran code with too many | |
233 | labels. */ | |
234 | TREE_USED (label_decl) = 1; | |
4ee9c684 | 235 | |
b797d6d3 | 236 | DECL_ARTIFICIAL (label_decl) = 1; |
4ee9c684 | 237 | return label_decl; |
238 | } | |
239 | ||
240 | ||
b31f705b | 241 | /* Set the backend source location of a decl. */ |
242 | ||
243 | void | |
244 | gfc_set_decl_location (tree decl, locus * loc) | |
245 | { | |
b31f705b | 246 | DECL_SOURCE_LOCATION (decl) = loc->lb->location; |
b31f705b | 247 | } |
248 | ||
249 | ||
4ee9c684 | 250 | /* Return the backend label declaration for a given label structure, |
251 | or create it if it doesn't exist yet. */ | |
252 | ||
253 | tree | |
254 | gfc_get_label_decl (gfc_st_label * lp) | |
255 | { | |
4ee9c684 | 256 | if (lp->backend_decl) |
257 | return lp->backend_decl; | |
258 | else | |
259 | { | |
260 | char label_name[GFC_MAX_SYMBOL_LEN + 1]; | |
261 | tree label_decl; | |
262 | ||
263 | /* Validate the label declaration from the front end. */ | |
22d678e8 | 264 | gcc_assert (lp != NULL && lp->value <= MAX_LABEL_VALUE); |
4ee9c684 | 265 | |
266 | /* Build a mangled name for the label. */ | |
267 | sprintf (label_name, "__label_%.6d", lp->value); | |
268 | ||
269 | /* Build the LABEL_DECL node. */ | |
270 | label_decl = gfc_build_label_decl (get_identifier (label_name)); | |
271 | ||
272 | /* Tell the debugger where the label came from. */ | |
f888a3fb | 273 | if (lp->value <= MAX_LABEL_VALUE) /* An internal label. */ |
b31f705b | 274 | gfc_set_decl_location (label_decl, &lp->where); |
4ee9c684 | 275 | else |
276 | DECL_ARTIFICIAL (label_decl) = 1; | |
277 | ||
278 | /* Store the label in the label list and return the LABEL_DECL. */ | |
279 | lp->backend_decl = label_decl; | |
280 | return label_decl; | |
281 | } | |
282 | } | |
283 | ||
284 | ||
285 | /* Convert a gfc_symbol to an identifier of the same name. */ | |
286 | ||
287 | static tree | |
288 | gfc_sym_identifier (gfc_symbol * sym) | |
289 | { | |
0509d0ee | 290 | if (sym->attr.is_main_program && strcmp (sym->name, "main") == 0) |
291 | return (get_identifier ("MAIN__")); | |
292 | else | |
293 | return (get_identifier (sym->name)); | |
4ee9c684 | 294 | } |
295 | ||
296 | ||
297 | /* Construct mangled name from symbol name. */ | |
298 | ||
299 | static tree | |
300 | gfc_sym_mangled_identifier (gfc_symbol * sym) | |
301 | { | |
302 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
303 | ||
c5d33754 | 304 | /* Prevent the mangling of identifiers that have an assigned |
305 | binding label (mainly those that are bind(c)). */ | |
306 | if (sym->attr.is_bind_c == 1 | |
307 | && sym->binding_label[0] != '\0') | |
308 | return get_identifier(sym->binding_label); | |
309 | ||
4f0fae8e | 310 | if (sym->module == NULL) |
4ee9c684 | 311 | return gfc_sym_identifier (sym); |
312 | else | |
313 | { | |
f08a3f6f | 314 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
4ee9c684 | 315 | return get_identifier (name); |
316 | } | |
317 | } | |
318 | ||
319 | ||
320 | /* Construct mangled function name from symbol name. */ | |
321 | ||
322 | static tree | |
323 | gfc_sym_mangled_function_id (gfc_symbol * sym) | |
324 | { | |
325 | int has_underscore; | |
326 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
327 | ||
c5d33754 | 328 | /* It may be possible to simply use the binding label if it's |
329 | provided, and remove the other checks. Then we could use it | |
330 | for other things if we wished. */ | |
331 | if ((sym->attr.is_bind_c == 1 || sym->attr.is_iso_c == 1) && | |
332 | sym->binding_label[0] != '\0') | |
333 | /* use the binding label rather than the mangled name */ | |
334 | return get_identifier (sym->binding_label); | |
335 | ||
4f0fae8e | 336 | if (sym->module == NULL || sym->attr.proc == PROC_EXTERNAL |
12441a18 | 337 | || (sym->module != NULL && (sym->attr.external |
338 | || sym->attr.if_source == IFSRC_IFBODY))) | |
4ee9c684 | 339 | { |
a2f97da7 | 340 | /* Main program is mangled into MAIN__. */ |
341 | if (sym->attr.is_main_program) | |
342 | return get_identifier ("MAIN__"); | |
343 | ||
344 | /* Intrinsic procedures are never mangled. */ | |
345 | if (sym->attr.proc == PROC_INTRINSIC) | |
4ee9c684 | 346 | return get_identifier (sym->name); |
347 | ||
348 | if (gfc_option.flag_underscoring) | |
349 | { | |
350 | has_underscore = strchr (sym->name, '_') != 0; | |
351 | if (gfc_option.flag_second_underscore && has_underscore) | |
352 | snprintf (name, sizeof name, "%s__", sym->name); | |
353 | else | |
354 | snprintf (name, sizeof name, "%s_", sym->name); | |
355 | return get_identifier (name); | |
356 | } | |
357 | else | |
358 | return get_identifier (sym->name); | |
359 | } | |
360 | else | |
361 | { | |
f08a3f6f | 362 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
4ee9c684 | 363 | return get_identifier (name); |
364 | } | |
365 | } | |
366 | ||
367 | ||
1236e28b | 368 | void |
369 | gfc_set_decl_assembler_name (tree decl, tree name) | |
370 | { | |
371 | tree target_mangled = targetm.mangle_decl_assembler_name (decl, name); | |
372 | SET_DECL_ASSEMBLER_NAME (decl, target_mangled); | |
373 | } | |
374 | ||
375 | ||
5ed82495 | 376 | /* Returns true if a variable of specified size should go on the stack. */ |
377 | ||
378 | int | |
379 | gfc_can_put_var_on_stack (tree size) | |
380 | { | |
381 | unsigned HOST_WIDE_INT low; | |
382 | ||
383 | if (!INTEGER_CST_P (size)) | |
384 | return 0; | |
385 | ||
386 | if (gfc_option.flag_max_stack_var_size < 0) | |
387 | return 1; | |
388 | ||
389 | if (TREE_INT_CST_HIGH (size) != 0) | |
390 | return 0; | |
391 | ||
392 | low = TREE_INT_CST_LOW (size); | |
393 | if (low > (unsigned HOST_WIDE_INT) gfc_option.flag_max_stack_var_size) | |
394 | return 0; | |
395 | ||
396 | /* TODO: Set a per-function stack size limit. */ | |
397 | ||
398 | return 1; | |
399 | } | |
400 | ||
401 | ||
b7bf3f81 | 402 | /* gfc_finish_cray_pointee sets DECL_VALUE_EXPR for a Cray pointee to |
403 | an expression involving its corresponding pointer. There are | |
404 | 2 cases; one for variable size arrays, and one for everything else, | |
405 | because variable-sized arrays require one fewer level of | |
406 | indirection. */ | |
407 | ||
408 | static void | |
409 | gfc_finish_cray_pointee (tree decl, gfc_symbol *sym) | |
410 | { | |
411 | tree ptr_decl = gfc_get_symbol_decl (sym->cp_pointer); | |
412 | tree value; | |
413 | ||
414 | /* Parameters need to be dereferenced. */ | |
415 | if (sym->cp_pointer->attr.dummy) | |
389dd41b | 416 | ptr_decl = build_fold_indirect_ref_loc (input_location, |
417 | ptr_decl); | |
b7bf3f81 | 418 | |
419 | /* Check to see if we're dealing with a variable-sized array. */ | |
420 | if (sym->attr.dimension | |
421 | && TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE) | |
422 | { | |
942043f8 | 423 | /* These decls will be dereferenced later, so we don't dereference |
b7bf3f81 | 424 | them here. */ |
425 | value = convert (TREE_TYPE (decl), ptr_decl); | |
426 | } | |
427 | else | |
428 | { | |
429 | ptr_decl = convert (build_pointer_type (TREE_TYPE (decl)), | |
430 | ptr_decl); | |
389dd41b | 431 | value = build_fold_indirect_ref_loc (input_location, |
432 | ptr_decl); | |
b7bf3f81 | 433 | } |
434 | ||
435 | SET_DECL_VALUE_EXPR (decl, value); | |
436 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
764f1175 | 437 | GFC_DECL_CRAY_POINTEE (decl) = 1; |
b7bf3f81 | 438 | /* This is a fake variable just for debugging purposes. */ |
439 | TREE_ASM_WRITTEN (decl) = 1; | |
440 | } | |
441 | ||
442 | ||
b9c7fce7 | 443 | /* Finish processing of a declaration without an initial value. */ |
4ee9c684 | 444 | |
445 | static void | |
b9c7fce7 | 446 | gfc_finish_decl (tree decl) |
4ee9c684 | 447 | { |
b9c7fce7 | 448 | gcc_assert (TREE_CODE (decl) == PARM_DECL |
449 | || DECL_INITIAL (decl) == NULL_TREE); | |
4ee9c684 | 450 | |
b9c7fce7 | 451 | if (TREE_CODE (decl) != VAR_DECL) |
452 | return; | |
4ee9c684 | 453 | |
b9c7fce7 | 454 | if (DECL_SIZE (decl) == NULL_TREE |
455 | && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE) | |
456 | layout_decl (decl, 0); | |
457 | ||
458 | /* A few consistency checks. */ | |
459 | /* A static variable with an incomplete type is an error if it is | |
460 | initialized. Also if it is not file scope. Otherwise, let it | |
461 | through, but if it is not `extern' then it may cause an error | |
462 | message later. */ | |
463 | /* An automatic variable with an incomplete type is an error. */ | |
464 | ||
465 | /* We should know the storage size. */ | |
466 | gcc_assert (DECL_SIZE (decl) != NULL_TREE | |
467 | || (TREE_STATIC (decl) | |
468 | ? (!DECL_INITIAL (decl) || !DECL_CONTEXT (decl)) | |
469 | : DECL_EXTERNAL (decl))); | |
470 | ||
471 | /* The storage size should be constant. */ | |
472 | gcc_assert ((!DECL_EXTERNAL (decl) && !TREE_STATIC (decl)) | |
473 | || !DECL_SIZE (decl) | |
474 | || TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST); | |
4ee9c684 | 475 | } |
476 | ||
477 | ||
478 | /* Apply symbol attributes to a variable, and add it to the function scope. */ | |
479 | ||
480 | static void | |
481 | gfc_finish_var_decl (tree decl, gfc_symbol * sym) | |
482 | { | |
c1977dbe | 483 | tree new_type; |
f888a3fb | 484 | /* TREE_ADDRESSABLE means the address of this variable is actually needed. |
4ee9c684 | 485 | This is the equivalent of the TARGET variables. |
486 | We also need to set this if the variable is passed by reference in a | |
487 | CALL statement. */ | |
b549d2a5 | 488 | |
b7bf3f81 | 489 | /* Set DECL_VALUE_EXPR for Cray Pointees. */ |
b549d2a5 | 490 | if (sym->attr.cray_pointee) |
b7bf3f81 | 491 | gfc_finish_cray_pointee (decl, sym); |
b549d2a5 | 492 | |
4ee9c684 | 493 | if (sym->attr.target) |
494 | TREE_ADDRESSABLE (decl) = 1; | |
495 | /* If it wasn't used we wouldn't be getting it. */ | |
496 | TREE_USED (decl) = 1; | |
497 | ||
498 | /* Chain this decl to the pending declarations. Don't do pushdecl() | |
499 | because this would add them to the current scope rather than the | |
500 | function scope. */ | |
501 | if (current_function_decl != NULL_TREE) | |
502 | { | |
7af6a4af | 503 | if (sym->ns->proc_name->backend_decl == current_function_decl |
6a7084d7 | 504 | || sym->result == sym) |
4ee9c684 | 505 | gfc_add_decl_to_function (decl); |
6a7084d7 | 506 | else if (sym->ns->proc_name->attr.flavor == FL_LABEL) |
507 | /* This is a BLOCK construct. */ | |
508 | add_decl_as_local (decl); | |
4ee9c684 | 509 | else |
510 | gfc_add_decl_to_parent_function (decl); | |
511 | } | |
512 | ||
b7bf3f81 | 513 | if (sym->attr.cray_pointee) |
514 | return; | |
515 | ||
c5d33754 | 516 | if(sym->attr.is_bind_c == 1) |
517 | { | |
518 | /* We need to put variables that are bind(c) into the common | |
519 | segment of the object file, because this is what C would do. | |
520 | gfortran would typically put them in either the BSS or | |
521 | initialized data segments, and only mark them as common if | |
522 | they were part of common blocks. However, if they are not put | |
ea657963 | 523 | into common space, then C cannot initialize global Fortran |
c5d33754 | 524 | variables that it interoperates with and the draft says that |
525 | either Fortran or C should be able to initialize it (but not | |
526 | both, of course.) (J3/04-007, section 15.3). */ | |
527 | TREE_PUBLIC(decl) = 1; | |
528 | DECL_COMMON(decl) = 1; | |
529 | } | |
530 | ||
4ee9c684 | 531 | /* If a variable is USE associated, it's always external. */ |
532 | if (sym->attr.use_assoc) | |
533 | { | |
534 | DECL_EXTERNAL (decl) = 1; | |
535 | TREE_PUBLIC (decl) = 1; | |
536 | } | |
4f0fae8e | 537 | else if (sym->module && !sym->attr.result && !sym->attr.dummy) |
4ee9c684 | 538 | { |
6b20224d | 539 | /* TODO: Don't set sym->module for result or dummy variables. */ |
7af6a4af | 540 | gcc_assert (current_function_decl == NULL_TREE || sym->result == sym); |
4ee9c684 | 541 | /* This is the declaration of a module variable. */ |
542 | TREE_PUBLIC (decl) = 1; | |
543 | TREE_STATIC (decl) = 1; | |
544 | } | |
545 | ||
f0d4969f | 546 | /* Derived types are a bit peculiar because of the possibility of |
547 | a default initializer; this must be applied each time the variable | |
548 | comes into scope it therefore need not be static. These variables | |
549 | are SAVE_NONE but have an initializer. Otherwise explicitly | |
69b1505f | 550 | initialized variables are SAVE_IMPLICIT and explicitly saved are |
f0d4969f | 551 | SAVE_EXPLICIT. */ |
552 | if (!sym->attr.use_assoc | |
553 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
554 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
4ee9c684 | 555 | TREE_STATIC (decl) = 1; |
ef814c81 | 556 | |
557 | if (sym->attr.volatile_) | |
558 | { | |
ef814c81 | 559 | TREE_THIS_VOLATILE (decl) = 1; |
c1977dbe | 560 | new_type = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE); |
561 | TREE_TYPE (decl) = new_type; | |
ef814c81 | 562 | } |
563 | ||
4ee9c684 | 564 | /* Keep variables larger than max-stack-var-size off stack. */ |
565 | if (!sym->ns->proc_name->attr.recursive | |
566 | && INTEGER_CST_P (DECL_SIZE_UNIT (decl)) | |
a3f2c0e1 | 567 | && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) |
568 | /* Put variable length auto array pointers always into stack. */ | |
569 | && (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE | |
570 | || sym->attr.dimension == 0 | |
571 | || sym->as->type != AS_EXPLICIT | |
572 | || sym->attr.pointer | |
573 | || sym->attr.allocatable) | |
574 | && !DECL_ARTIFICIAL (decl)) | |
4ee9c684 | 575 | TREE_STATIC (decl) = 1; |
764f1175 | 576 | |
577 | /* Handle threadprivate variables. */ | |
9dda1f80 | 578 | if (sym->attr.threadprivate |
764f1175 | 579 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) |
580 | DECL_TLS_MODEL (decl) = decl_default_tls_model (decl); | |
e1b3b79b | 581 | |
582 | if (!sym->attr.target | |
583 | && !sym->attr.pointer | |
452695a8 | 584 | && !sym->attr.cray_pointee |
8bb76364 | 585 | && !sym->attr.proc_pointer) |
586 | DECL_RESTRICTED_P (decl) = 1; | |
4ee9c684 | 587 | } |
588 | ||
589 | ||
590 | /* Allocate the lang-specific part of a decl. */ | |
591 | ||
592 | void | |
593 | gfc_allocate_lang_decl (tree decl) | |
594 | { | |
ba72912a | 595 | DECL_LANG_SPECIFIC (decl) = ggc_alloc_cleared_lang_decl(sizeof |
596 | (struct lang_decl)); | |
4ee9c684 | 597 | } |
598 | ||
599 | /* Remember a symbol to generate initialization/cleanup code at function | |
600 | entry/exit. */ | |
601 | ||
602 | static void | |
603 | gfc_defer_symbol_init (gfc_symbol * sym) | |
604 | { | |
605 | gfc_symbol *p; | |
606 | gfc_symbol *last; | |
607 | gfc_symbol *head; | |
608 | ||
609 | /* Don't add a symbol twice. */ | |
610 | if (sym->tlink) | |
611 | return; | |
612 | ||
613 | last = head = sym->ns->proc_name; | |
614 | p = last->tlink; | |
615 | ||
616 | /* Make sure that setup code for dummy variables which are used in the | |
617 | setup of other variables is generated first. */ | |
618 | if (sym->attr.dummy) | |
619 | { | |
620 | /* Find the first dummy arg seen after us, or the first non-dummy arg. | |
621 | This is a circular list, so don't go past the head. */ | |
622 | while (p != head | |
623 | && (!p->attr.dummy || p->dummy_order > sym->dummy_order)) | |
624 | { | |
625 | last = p; | |
626 | p = p->tlink; | |
627 | } | |
628 | } | |
629 | /* Insert in between last and p. */ | |
630 | last->tlink = sym; | |
631 | sym->tlink = p; | |
632 | } | |
633 | ||
634 | ||
635 | /* Create an array index type variable with function scope. */ | |
636 | ||
637 | static tree | |
638 | create_index_var (const char * pfx, int nest) | |
639 | { | |
640 | tree decl; | |
641 | ||
642 | decl = gfc_create_var_np (gfc_array_index_type, pfx); | |
643 | if (nest) | |
644 | gfc_add_decl_to_parent_function (decl); | |
645 | else | |
646 | gfc_add_decl_to_function (decl); | |
647 | return decl; | |
648 | } | |
649 | ||
650 | ||
651 | /* Create variables to hold all the non-constant bits of info for a | |
652 | descriptorless array. Remember these in the lang-specific part of the | |
653 | type. */ | |
654 | ||
655 | static void | |
656 | gfc_build_qualified_array (tree decl, gfc_symbol * sym) | |
657 | { | |
658 | tree type; | |
659 | int dim; | |
660 | int nest; | |
661 | ||
662 | type = TREE_TYPE (decl); | |
663 | ||
664 | /* We just use the descriptor, if there is one. */ | |
665 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
666 | return; | |
667 | ||
22d678e8 | 668 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
4ee9c684 | 669 | nest = (sym->ns->proc_name->backend_decl != current_function_decl) |
670 | && !sym->attr.contained; | |
671 | ||
672 | for (dim = 0; dim < GFC_TYPE_ARRAY_RANK (type); dim++) | |
673 | { | |
674 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
86254bbf | 675 | { |
676 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
677 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
678 | } | |
9ca15c9b | 679 | /* Don't try to use the unknown bound for assumed shape arrays. */ |
4ee9c684 | 680 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE |
681 | && (sym->as->type != AS_ASSUMED_SIZE | |
682 | || dim < GFC_TYPE_ARRAY_RANK (type) - 1)) | |
86254bbf | 683 | { |
684 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
685 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
686 | } | |
4ee9c684 | 687 | |
688 | if (GFC_TYPE_ARRAY_STRIDE (type, dim) == NULL_TREE) | |
86254bbf | 689 | { |
690 | GFC_TYPE_ARRAY_STRIDE (type, dim) = create_index_var ("stride", nest); | |
691 | TREE_NO_WARNING (GFC_TYPE_ARRAY_STRIDE (type, dim)) = 1; | |
692 | } | |
4ee9c684 | 693 | } |
694 | if (GFC_TYPE_ARRAY_OFFSET (type) == NULL_TREE) | |
695 | { | |
696 | GFC_TYPE_ARRAY_OFFSET (type) = gfc_create_var_np (gfc_array_index_type, | |
697 | "offset"); | |
86254bbf | 698 | TREE_NO_WARNING (GFC_TYPE_ARRAY_OFFSET (type)) = 1; |
699 | ||
4ee9c684 | 700 | if (nest) |
701 | gfc_add_decl_to_parent_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
702 | else | |
703 | gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
704 | } | |
d4163395 | 705 | |
706 | if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE | |
707 | && sym->as->type != AS_ASSUMED_SIZE) | |
86254bbf | 708 | { |
709 | GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest); | |
710 | TREE_NO_WARNING (GFC_TYPE_ARRAY_SIZE (type)) = 1; | |
711 | } | |
d4163395 | 712 | |
713 | if (POINTER_TYPE_P (type)) | |
714 | { | |
715 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type))); | |
716 | gcc_assert (TYPE_LANG_SPECIFIC (type) | |
717 | == TYPE_LANG_SPECIFIC (TREE_TYPE (type))); | |
718 | type = TREE_TYPE (type); | |
719 | } | |
720 | ||
721 | if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type)) | |
722 | { | |
723 | tree size, range; | |
724 | ||
f75d6b8a | 725 | size = fold_build2 (MINUS_EXPR, gfc_array_index_type, |
726 | GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node); | |
d4163395 | 727 | range = build_range_type (gfc_array_index_type, gfc_index_zero_node, |
728 | size); | |
729 | TYPE_DOMAIN (type) = range; | |
730 | layout_type (type); | |
731 | } | |
6cf159a6 | 732 | |
6cf159a6 | 733 | if (TYPE_NAME (type) != NULL_TREE |
734 | && GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1) != NULL_TREE | |
735 | && TREE_CODE (GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1)) == VAR_DECL) | |
736 | { | |
737 | tree gtype = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
738 | ||
739 | for (dim = 0; dim < sym->as->rank - 1; dim++) | |
740 | { | |
741 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
742 | gtype = TREE_TYPE (gtype); | |
743 | } | |
744 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
745 | if (TYPE_MAX_VALUE (TYPE_DOMAIN (gtype)) == NULL) | |
746 | TYPE_NAME (type) = NULL_TREE; | |
747 | } | |
748 | ||
749 | if (TYPE_NAME (type) == NULL_TREE) | |
750 | { | |
751 | tree gtype = TREE_TYPE (type), rtype, type_decl; | |
752 | ||
753 | for (dim = sym->as->rank - 1; dim >= 0; dim--) | |
754 | { | |
7130ec9d | 755 | tree lbound, ubound; |
756 | lbound = GFC_TYPE_ARRAY_LBOUND (type, dim); | |
757 | ubound = GFC_TYPE_ARRAY_UBOUND (type, dim); | |
758 | rtype = build_range_type (gfc_array_index_type, lbound, ubound); | |
6cf159a6 | 759 | gtype = build_array_type (gtype, rtype); |
3c8f1d7e | 760 | /* Ensure the bound variables aren't optimized out at -O0. |
761 | For -O1 and above they often will be optimized out, but | |
84bfaaeb | 762 | can be tracked by VTA. Also set DECL_NAMELESS, so that |
763 | the artificial lbound.N or ubound.N DECL_NAME doesn't | |
764 | end up in debug info. */ | |
7130ec9d | 765 | if (lbound && TREE_CODE (lbound) == VAR_DECL |
766 | && DECL_ARTIFICIAL (lbound) && DECL_IGNORED_P (lbound)) | |
767 | { | |
768 | if (DECL_NAME (lbound) | |
769 | && strstr (IDENTIFIER_POINTER (DECL_NAME (lbound)), | |
770 | "lbound") != 0) | |
84bfaaeb | 771 | DECL_NAMELESS (lbound) = 1; |
7130ec9d | 772 | DECL_IGNORED_P (lbound) = 0; |
773 | } | |
774 | if (ubound && TREE_CODE (ubound) == VAR_DECL | |
775 | && DECL_ARTIFICIAL (ubound) && DECL_IGNORED_P (ubound)) | |
776 | { | |
777 | if (DECL_NAME (ubound) | |
778 | && strstr (IDENTIFIER_POINTER (DECL_NAME (ubound)), | |
779 | "ubound") != 0) | |
84bfaaeb | 780 | DECL_NAMELESS (ubound) = 1; |
7130ec9d | 781 | DECL_IGNORED_P (ubound) = 0; |
782 | } | |
6cf159a6 | 783 | } |
e60a6f7b | 784 | TYPE_NAME (type) = type_decl = build_decl (input_location, |
785 | TYPE_DECL, NULL, gtype); | |
6cf159a6 | 786 | DECL_ORIGINAL_TYPE (type_decl) = gtype; |
787 | } | |
4ee9c684 | 788 | } |
789 | ||
790 | ||
791 | /* For some dummy arguments we don't use the actual argument directly. | |
5ed82495 | 792 | Instead we create a local decl and use that. This allows us to perform |
4ee9c684 | 793 | initialization, and construct full type information. */ |
794 | ||
795 | static tree | |
796 | gfc_build_dummy_array_decl (gfc_symbol * sym, tree dummy) | |
797 | { | |
798 | tree decl; | |
799 | tree type; | |
800 | gfc_array_spec *as; | |
801 | char *name; | |
3d8dea5a | 802 | gfc_packed packed; |
4ee9c684 | 803 | int n; |
804 | bool known_size; | |
805 | ||
806 | if (sym->attr.pointer || sym->attr.allocatable) | |
807 | return dummy; | |
808 | ||
809 | /* Add to list of variables if not a fake result variable. */ | |
810 | if (sym->attr.result || sym->attr.dummy) | |
811 | gfc_defer_symbol_init (sym); | |
812 | ||
813 | type = TREE_TYPE (dummy); | |
22d678e8 | 814 | gcc_assert (TREE_CODE (dummy) == PARM_DECL |
4ee9c684 | 815 | && POINTER_TYPE_P (type)); |
816 | ||
f888a3fb | 817 | /* Do we know the element size? */ |
4ee9c684 | 818 | known_size = sym->ts.type != BT_CHARACTER |
eeebe20b | 819 | || INTEGER_CST_P (sym->ts.u.cl->backend_decl); |
4ee9c684 | 820 | |
821 | if (known_size && !GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (type))) | |
822 | { | |
823 | /* For descriptorless arrays with known element size the actual | |
824 | argument is sufficient. */ | |
22d678e8 | 825 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
4ee9c684 | 826 | gfc_build_qualified_array (dummy, sym); |
827 | return dummy; | |
828 | } | |
829 | ||
830 | type = TREE_TYPE (type); | |
831 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
832 | { | |
cb8e3560 | 833 | /* Create a descriptorless array pointer. */ |
4ee9c684 | 834 | as = sym->as; |
3d8dea5a | 835 | packed = PACKED_NO; |
3d235846 | 836 | |
837 | /* Even when -frepack-arrays is used, symbols with TARGET attribute | |
838 | are not repacked. */ | |
839 | if (!gfc_option.flag_repack_arrays || sym->attr.target) | |
4ee9c684 | 840 | { |
841 | if (as->type == AS_ASSUMED_SIZE) | |
3d8dea5a | 842 | packed = PACKED_FULL; |
4ee9c684 | 843 | } |
844 | else | |
845 | { | |
846 | if (as->type == AS_EXPLICIT) | |
847 | { | |
3d8dea5a | 848 | packed = PACKED_FULL; |
4ee9c684 | 849 | for (n = 0; n < as->rank; n++) |
850 | { | |
851 | if (!(as->upper[n] | |
852 | && as->lower[n] | |
853 | && as->upper[n]->expr_type == EXPR_CONSTANT | |
854 | && as->lower[n]->expr_type == EXPR_CONSTANT)) | |
3d8dea5a | 855 | packed = PACKED_PARTIAL; |
4ee9c684 | 856 | } |
857 | } | |
858 | else | |
3d8dea5a | 859 | packed = PACKED_PARTIAL; |
4ee9c684 | 860 | } |
861 | ||
862 | type = gfc_typenode_for_spec (&sym->ts); | |
e1b3b79b | 863 | type = gfc_get_nodesc_array_type (type, sym->as, packed, |
864 | !sym->attr.target); | |
4ee9c684 | 865 | } |
866 | else | |
867 | { | |
868 | /* We now have an expression for the element size, so create a fully | |
869 | qualified type. Reset sym->backend decl or this will just return the | |
870 | old type. */ | |
d95efb59 | 871 | DECL_ARTIFICIAL (sym->backend_decl) = 1; |
4ee9c684 | 872 | sym->backend_decl = NULL_TREE; |
873 | type = gfc_sym_type (sym); | |
3d8dea5a | 874 | packed = PACKED_FULL; |
4ee9c684 | 875 | } |
876 | ||
877 | ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0); | |
e60a6f7b | 878 | decl = build_decl (input_location, |
879 | VAR_DECL, get_identifier (name), type); | |
4ee9c684 | 880 | |
881 | DECL_ARTIFICIAL (decl) = 1; | |
84bfaaeb | 882 | DECL_NAMELESS (decl) = 1; |
4ee9c684 | 883 | TREE_PUBLIC (decl) = 0; |
884 | TREE_STATIC (decl) = 0; | |
885 | DECL_EXTERNAL (decl) = 0; | |
886 | ||
887 | /* We should never get deferred shape arrays here. We used to because of | |
888 | frontend bugs. */ | |
22d678e8 | 889 | gcc_assert (sym->as->type != AS_DEFERRED); |
4ee9c684 | 890 | |
3d8dea5a | 891 | if (packed == PACKED_PARTIAL) |
892 | GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1; | |
893 | else if (packed == PACKED_FULL) | |
894 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
4ee9c684 | 895 | |
896 | gfc_build_qualified_array (decl, sym); | |
897 | ||
898 | if (DECL_LANG_SPECIFIC (dummy)) | |
899 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (dummy); | |
900 | else | |
901 | gfc_allocate_lang_decl (decl); | |
902 | ||
903 | GFC_DECL_SAVED_DESCRIPTOR (decl) = dummy; | |
904 | ||
905 | if (sym->ns->proc_name->backend_decl == current_function_decl | |
906 | || sym->attr.contained) | |
907 | gfc_add_decl_to_function (decl); | |
908 | else | |
909 | gfc_add_decl_to_parent_function (decl); | |
910 | ||
911 | return decl; | |
912 | } | |
913 | ||
9579733e | 914 | /* For symbol SYM with GFC_DECL_SAVED_DESCRIPTOR used in contained |
915 | function add a VAR_DECL to the current function with DECL_VALUE_EXPR | |
916 | pointing to the artificial variable for debug info purposes. */ | |
917 | ||
918 | static void | |
919 | gfc_nonlocal_dummy_array_decl (gfc_symbol *sym) | |
920 | { | |
921 | tree decl, dummy; | |
922 | ||
923 | if (! nonlocal_dummy_decl_pset) | |
924 | nonlocal_dummy_decl_pset = pointer_set_create (); | |
925 | ||
926 | if (pointer_set_insert (nonlocal_dummy_decl_pset, sym->backend_decl)) | |
927 | return; | |
928 | ||
929 | dummy = GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl); | |
e60a6f7b | 930 | decl = build_decl (input_location, VAR_DECL, DECL_NAME (dummy), |
9579733e | 931 | TREE_TYPE (sym->backend_decl)); |
932 | DECL_ARTIFICIAL (decl) = 0; | |
933 | TREE_USED (decl) = 1; | |
934 | TREE_PUBLIC (decl) = 0; | |
935 | TREE_STATIC (decl) = 0; | |
936 | DECL_EXTERNAL (decl) = 0; | |
937 | if (DECL_BY_REFERENCE (dummy)) | |
938 | DECL_BY_REFERENCE (decl) = 1; | |
939 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (sym->backend_decl); | |
940 | SET_DECL_VALUE_EXPR (decl, sym->backend_decl); | |
941 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
942 | DECL_CONTEXT (decl) = DECL_CONTEXT (sym->backend_decl); | |
1767a056 | 943 | DECL_CHAIN (decl) = nonlocal_dummy_decls; |
9579733e | 944 | nonlocal_dummy_decls = decl; |
945 | } | |
4ee9c684 | 946 | |
947 | /* Return a constant or a variable to use as a string length. Does not | |
948 | add the decl to the current scope. */ | |
949 | ||
950 | static tree | |
951 | gfc_create_string_length (gfc_symbol * sym) | |
952 | { | |
eeebe20b | 953 | gcc_assert (sym->ts.u.cl); |
954 | gfc_conv_const_charlen (sym->ts.u.cl); | |
a4abf8a0 | 955 | |
eeebe20b | 956 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
4ee9c684 | 957 | { |
a4abf8a0 | 958 | tree length; |
4ee9c684 | 959 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2]; |
960 | ||
961 | /* Also prefix the mangled name. */ | |
962 | strcpy (&name[1], sym->name); | |
963 | name[0] = '.'; | |
e60a6f7b | 964 | length = build_decl (input_location, |
965 | VAR_DECL, get_identifier (name), | |
9ad09405 | 966 | gfc_charlen_type_node); |
4ee9c684 | 967 | DECL_ARTIFICIAL (length) = 1; |
968 | TREE_USED (length) = 1; | |
d4163395 | 969 | if (sym->ns->proc_name->tlink != NULL) |
970 | gfc_defer_symbol_init (sym); | |
a4abf8a0 | 971 | |
eeebe20b | 972 | sym->ts.u.cl->backend_decl = length; |
4ee9c684 | 973 | } |
974 | ||
eeebe20b | 975 | gcc_assert (sym->ts.u.cl->backend_decl != NULL_TREE); |
976 | return sym->ts.u.cl->backend_decl; | |
4ee9c684 | 977 | } |
978 | ||
c8f1568f | 979 | /* If a variable is assigned a label, we add another two auxiliary |
980 | variables. */ | |
981 | ||
982 | static void | |
983 | gfc_add_assign_aux_vars (gfc_symbol * sym) | |
984 | { | |
985 | tree addr; | |
986 | tree length; | |
987 | tree decl; | |
988 | ||
989 | gcc_assert (sym->backend_decl); | |
990 | ||
991 | decl = sym->backend_decl; | |
992 | gfc_allocate_lang_decl (decl); | |
993 | GFC_DECL_ASSIGN (decl) = 1; | |
e60a6f7b | 994 | length = build_decl (input_location, |
995 | VAR_DECL, create_tmp_var_name (sym->name), | |
c8f1568f | 996 | gfc_charlen_type_node); |
e60a6f7b | 997 | addr = build_decl (input_location, |
998 | VAR_DECL, create_tmp_var_name (sym->name), | |
c8f1568f | 999 | pvoid_type_node); |
1000 | gfc_finish_var_decl (length, sym); | |
1001 | gfc_finish_var_decl (addr, sym); | |
1002 | /* STRING_LENGTH is also used as flag. Less than -1 means that | |
1003 | ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the | |
1004 | target label's address. Otherwise, value is the length of a format string | |
1005 | and ASSIGN_ADDR is its address. */ | |
1006 | if (TREE_STATIC (length)) | |
1007 | DECL_INITIAL (length) = build_int_cst (NULL_TREE, -2); | |
1008 | else | |
1009 | gfc_defer_symbol_init (sym); | |
1010 | ||
1011 | GFC_DECL_STRING_LEN (decl) = length; | |
1012 | GFC_DECL_ASSIGN_ADDR (decl) = addr; | |
1013 | } | |
4ee9c684 | 1014 | |
36b0a1b0 | 1015 | |
1016 | static tree | |
1017 | add_attributes_to_decl (symbol_attribute sym_attr, tree list) | |
1018 | { | |
1019 | unsigned id; | |
1020 | tree attr; | |
1021 | ||
1022 | for (id = 0; id < EXT_ATTR_NUM; id++) | |
1023 | if (sym_attr.ext_attr & (1 << id)) | |
1024 | { | |
1025 | attr = build_tree_list ( | |
1026 | get_identifier (ext_attr_list[id].middle_end_name), | |
1027 | NULL_TREE); | |
1028 | list = chainon (list, attr); | |
1029 | } | |
1030 | ||
1031 | return list; | |
1032 | } | |
1033 | ||
1034 | ||
4ee9c684 | 1035 | /* Return the decl for a gfc_symbol, create it if it doesn't already |
1036 | exist. */ | |
1037 | ||
1038 | tree | |
1039 | gfc_get_symbol_decl (gfc_symbol * sym) | |
1040 | { | |
1041 | tree decl; | |
1042 | tree length = NULL_TREE; | |
36b0a1b0 | 1043 | tree attributes; |
4ee9c684 | 1044 | int byref; |
1045 | ||
0b5dc8b5 | 1046 | gcc_assert (sym->attr.referenced |
d0f6ad22 | 1047 | || sym->attr.use_assoc |
1048 | || sym->ns->proc_name->attr.if_source == IFSRC_IFBODY); | |
4ee9c684 | 1049 | |
ff70e443 | 1050 | if (sym->ns && sym->ns->proc_name && sym->ns->proc_name->attr.function) |
4ee9c684 | 1051 | byref = gfc_return_by_reference (sym->ns->proc_name); |
1052 | else | |
1053 | byref = 0; | |
1054 | ||
09c509ed | 1055 | /* Make sure that the vtab for the declared type is completed. */ |
1056 | if (sym->ts.type == BT_CLASS) | |
1057 | { | |
50b4b37b | 1058 | gfc_component *c = CLASS_DATA (sym); |
09c509ed | 1059 | if (!c->ts.u.derived->backend_decl) |
09276310 | 1060 | gfc_find_derived_vtab (c->ts.u.derived); |
09c509ed | 1061 | } |
1062 | ||
4ee9c684 | 1063 | if ((sym->attr.dummy && ! sym->attr.function) || (sym->attr.result && byref)) |
1064 | { | |
1065 | /* Return via extra parameter. */ | |
1066 | if (sym->attr.result && byref | |
1067 | && !sym->backend_decl) | |
1068 | { | |
1069 | sym->backend_decl = | |
1070 | DECL_ARGUMENTS (sym->ns->proc_name->backend_decl); | |
c6871095 | 1071 | /* For entry master function skip over the __entry |
1072 | argument. */ | |
1073 | if (sym->ns->proc_name->attr.entry_master) | |
1767a056 | 1074 | sym->backend_decl = DECL_CHAIN (sym->backend_decl); |
4ee9c684 | 1075 | } |
1076 | ||
1077 | /* Dummy variables should already have been created. */ | |
22d678e8 | 1078 | gcc_assert (sym->backend_decl); |
4ee9c684 | 1079 | |
1080 | /* Create a character length variable. */ | |
1081 | if (sym->ts.type == BT_CHARACTER) | |
1082 | { | |
eeebe20b | 1083 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
d4163395 | 1084 | length = gfc_create_string_length (sym); |
1085 | else | |
eeebe20b | 1086 | length = sym->ts.u.cl->backend_decl; |
d4163395 | 1087 | if (TREE_CODE (length) == VAR_DECL |
1088 | && DECL_CONTEXT (length) == NULL_TREE) | |
4ee9c684 | 1089 | { |
d95efb59 | 1090 | /* Add the string length to the same context as the symbol. */ |
1091 | if (DECL_CONTEXT (sym->backend_decl) == current_function_decl) | |
1092 | gfc_add_decl_to_function (length); | |
1093 | else | |
1094 | gfc_add_decl_to_parent_function (length); | |
1095 | ||
1096 | gcc_assert (DECL_CONTEXT (sym->backend_decl) == | |
1097 | DECL_CONTEXT (length)); | |
1098 | ||
d4163395 | 1099 | gfc_defer_symbol_init (sym); |
e8ff3944 | 1100 | } |
4ee9c684 | 1101 | } |
1102 | ||
1103 | /* Use a copy of the descriptor for dummy arrays. */ | |
1104 | if (sym->attr.dimension && !TREE_USED (sym->backend_decl)) | |
1105 | { | |
d95efb59 | 1106 | decl = gfc_build_dummy_array_decl (sym, sym->backend_decl); |
1107 | /* Prevent the dummy from being detected as unused if it is copied. */ | |
1108 | if (sym->backend_decl != NULL && decl != sym->backend_decl) | |
1109 | DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
1110 | sym->backend_decl = decl; | |
4ee9c684 | 1111 | } |
1112 | ||
1113 | TREE_USED (sym->backend_decl) = 1; | |
c8f1568f | 1114 | if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0) |
1115 | { | |
1116 | gfc_add_assign_aux_vars (sym); | |
1117 | } | |
9579733e | 1118 | |
1119 | if (sym->attr.dimension | |
1120 | && DECL_LANG_SPECIFIC (sym->backend_decl) | |
1121 | && GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl) | |
1122 | && DECL_CONTEXT (sym->backend_decl) != current_function_decl) | |
1123 | gfc_nonlocal_dummy_array_decl (sym); | |
1124 | ||
4ee9c684 | 1125 | return sym->backend_decl; |
1126 | } | |
1127 | ||
1128 | if (sym->backend_decl) | |
1129 | return sym->backend_decl; | |
1130 | ||
7ea64434 | 1131 | /* If use associated and whole file compilation, use the module |
094bca96 | 1132 | declaration. */ |
7ea64434 | 1133 | if (gfc_option.flag_whole_file |
1134 | && sym->attr.flavor == FL_VARIABLE | |
7ea64434 | 1135 | && sym->attr.use_assoc |
1136 | && sym->module) | |
1137 | { | |
1138 | gfc_gsymbol *gsym; | |
1139 | ||
1140 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
1141 | if (gsym && gsym->ns && gsym->type == GSYM_MODULE) | |
1142 | { | |
1143 | gfc_symbol *s; | |
1144 | s = NULL; | |
1145 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
1146 | if (s && s->backend_decl) | |
1147 | { | |
094bca96 | 1148 | if (sym->ts.type == BT_DERIVED) |
1149 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, | |
1150 | true); | |
7ea64434 | 1151 | if (sym->ts.type == BT_CHARACTER) |
eeebe20b | 1152 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; |
7623e879 | 1153 | sym->backend_decl = s->backend_decl; |
1154 | return sym->backend_decl; | |
7ea64434 | 1155 | } |
1156 | } | |
1157 | } | |
1158 | ||
7251ca54 | 1159 | /* Catch function declarations. Only used for actual parameters and |
1160 | procedure pointers. */ | |
4ee9c684 | 1161 | if (sym->attr.flavor == FL_PROCEDURE) |
1162 | { | |
1163 | decl = gfc_get_extern_function_decl (sym); | |
7251ca54 | 1164 | gfc_set_decl_location (decl, &sym->declared_at); |
4ee9c684 | 1165 | return decl; |
1166 | } | |
1167 | ||
1168 | if (sym->attr.intrinsic) | |
1169 | internal_error ("intrinsic variable which isn't a procedure"); | |
1170 | ||
1171 | /* Create string length decl first so that they can be used in the | |
1172 | type declaration. */ | |
1173 | if (sym->ts.type == BT_CHARACTER) | |
1174 | length = gfc_create_string_length (sym); | |
1175 | ||
1176 | /* Create the decl for the variable. */ | |
e60a6f7b | 1177 | decl = build_decl (sym->declared_at.lb->location, |
1178 | VAR_DECL, gfc_sym_identifier (sym), gfc_sym_type (sym)); | |
b31f705b | 1179 | |
1236e28b | 1180 | /* Add attributes to variables. Functions are handled elsewhere. */ |
1181 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); | |
1182 | decl_attributes (&decl, attributes, 0); | |
1183 | ||
f888a3fb | 1184 | /* Symbols from modules should have their assembler names mangled. |
4ee9c684 | 1185 | This is done here rather than in gfc_finish_var_decl because it |
1186 | is different for string length variables. */ | |
4f0fae8e | 1187 | if (sym->module) |
df4d540f | 1188 | { |
1236e28b | 1189 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); |
df4d540f | 1190 | if (sym->attr.use_assoc) |
1191 | DECL_IGNORED_P (decl) = 1; | |
1192 | } | |
4ee9c684 | 1193 | |
1194 | if (sym->attr.dimension) | |
1195 | { | |
1196 | /* Create variables to hold the non-constant bits of array info. */ | |
1197 | gfc_build_qualified_array (decl, sym); | |
1198 | ||
b3c3927c | 1199 | if (sym->attr.contiguous |
1200 | || ((sym->attr.allocatable || !sym->attr.dummy) && !sym->attr.pointer)) | |
4ee9c684 | 1201 | GFC_DECL_PACKED_ARRAY (decl) = 1; |
1202 | } | |
1203 | ||
0a96a7cc | 1204 | /* Remember this variable for allocation/cleanup. */ |
1205 | if (sym->attr.dimension || sym->attr.allocatable | |
1206 | || (sym->ts.type == BT_CLASS && | |
50b4b37b | 1207 | (CLASS_DATA (sym)->attr.dimension |
1208 | || CLASS_DATA (sym)->attr.allocatable)) | |
0a96a7cc | 1209 | || (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
1210 | /* This applies a derived type default initializer. */ | |
1211 | || (sym->ts.type == BT_DERIVED | |
1212 | && sym->attr.save == SAVE_NONE | |
1213 | && !sym->attr.data | |
1214 | && !sym->attr.allocatable | |
1215 | && (sym->value && !sym->ns->proc_name->attr.is_main_program) | |
1216 | && !sym->attr.use_assoc)) | |
f0d4969f | 1217 | gfc_defer_symbol_init (sym); |
2294b616 | 1218 | |
4ee9c684 | 1219 | gfc_finish_var_decl (decl, sym); |
1220 | ||
bda1f152 | 1221 | if (sym->ts.type == BT_CHARACTER) |
4ee9c684 | 1222 | { |
4ee9c684 | 1223 | /* Character variables need special handling. */ |
1224 | gfc_allocate_lang_decl (decl); | |
1225 | ||
bda1f152 | 1226 | if (TREE_CODE (length) != INTEGER_CST) |
4ee9c684 | 1227 | { |
1228 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2]; | |
1229 | ||
4f0fae8e | 1230 | if (sym->module) |
4ee9c684 | 1231 | { |
1232 | /* Also prefix the mangled name for symbols from modules. */ | |
1233 | strcpy (&name[1], sym->name); | |
1234 | name[0] = '.'; | |
1235 | strcpy (&name[1], | |
1236 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (length))); | |
1236e28b | 1237 | gfc_set_decl_assembler_name (decl, get_identifier (name)); |
4ee9c684 | 1238 | } |
1239 | gfc_finish_var_decl (length, sym); | |
22d678e8 | 1240 | gcc_assert (!sym->value); |
4ee9c684 | 1241 | } |
4ee9c684 | 1242 | } |
1033248c | 1243 | else if (sym->attr.subref_array_pointer) |
1244 | { | |
1245 | /* We need the span for these beasts. */ | |
1246 | gfc_allocate_lang_decl (decl); | |
1247 | } | |
1248 | ||
1249 | if (sym->attr.subref_array_pointer) | |
1250 | { | |
1251 | tree span; | |
1252 | GFC_DECL_SUBREF_ARRAY_P (decl) = 1; | |
e60a6f7b | 1253 | span = build_decl (input_location, |
1254 | VAR_DECL, create_tmp_var_name ("span"), | |
1033248c | 1255 | gfc_array_index_type); |
1256 | gfc_finish_var_decl (span, sym); | |
6180d82a | 1257 | TREE_STATIC (span) = TREE_STATIC (decl); |
1258 | DECL_ARTIFICIAL (span) = 1; | |
1259 | DECL_INITIAL (span) = build_int_cst (gfc_array_index_type, 0); | |
1033248c | 1260 | |
1261 | GFC_DECL_SPAN (decl) = span; | |
6180d82a | 1262 | GFC_TYPE_ARRAY_SPAN (TREE_TYPE (decl)) = span; |
1033248c | 1263 | } |
1264 | ||
4ee9c684 | 1265 | sym->backend_decl = decl; |
1266 | ||
c8f1568f | 1267 | if (sym->attr.assign) |
21ebda4d | 1268 | gfc_add_assign_aux_vars (sym); |
c8f1568f | 1269 | |
a545a8f8 | 1270 | if (TREE_STATIC (decl) && !sym->attr.use_assoc |
1271 | && (sym->attr.save || sym->ns->proc_name->attr.is_main_program | |
1272 | || gfc_option.flag_max_stack_var_size == 0 | |
1273 | || sym->attr.data || sym->ns->proc_name->attr.flavor == FL_MODULE)) | |
1274 | { | |
1275 | /* Add static initializer. For procedures, it is only needed if | |
1276 | SAVE is specified otherwise they need to be reinitialized | |
1277 | every time the procedure is entered. The TREE_STATIC is | |
1278 | in this case due to -fmax-stack-var-size=. */ | |
bda1f152 | 1279 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
1280 | TREE_TYPE (decl), sym->attr.dimension, | |
1281 | sym->attr.pointer || sym->attr.allocatable); | |
1282 | } | |
1283 | ||
9579733e | 1284 | if (!TREE_STATIC (decl) |
1285 | && POINTER_TYPE_P (TREE_TYPE (decl)) | |
1286 | && !sym->attr.pointer | |
1287 | && !sym->attr.allocatable | |
1288 | && !sym->attr.proc_pointer) | |
1289 | DECL_BY_REFERENCE (decl) = 1; | |
1290 | ||
4ee9c684 | 1291 | return decl; |
1292 | } | |
1293 | ||
1294 | ||
dbe60343 | 1295 | /* Substitute a temporary variable in place of the real one. */ |
1296 | ||
1297 | void | |
1298 | gfc_shadow_sym (gfc_symbol * sym, tree decl, gfc_saved_var * save) | |
1299 | { | |
1300 | save->attr = sym->attr; | |
1301 | save->decl = sym->backend_decl; | |
1302 | ||
1303 | gfc_clear_attr (&sym->attr); | |
1304 | sym->attr.referenced = 1; | |
1305 | sym->attr.flavor = FL_VARIABLE; | |
1306 | ||
1307 | sym->backend_decl = decl; | |
1308 | } | |
1309 | ||
1310 | ||
1311 | /* Restore the original variable. */ | |
1312 | ||
1313 | void | |
1314 | gfc_restore_sym (gfc_symbol * sym, gfc_saved_var * save) | |
1315 | { | |
1316 | sym->attr = save->attr; | |
1317 | sym->backend_decl = save->decl; | |
1318 | } | |
1319 | ||
1320 | ||
cad0ddcf | 1321 | /* Declare a procedure pointer. */ |
1322 | ||
1323 | static tree | |
1324 | get_proc_pointer_decl (gfc_symbol *sym) | |
1325 | { | |
1326 | tree decl; | |
36b0a1b0 | 1327 | tree attributes; |
cad0ddcf | 1328 | |
1329 | decl = sym->backend_decl; | |
1330 | if (decl) | |
1331 | return decl; | |
1332 | ||
e60a6f7b | 1333 | decl = build_decl (input_location, |
1334 | VAR_DECL, get_identifier (sym->name), | |
cad0ddcf | 1335 | build_pointer_type (gfc_get_function_type (sym))); |
1336 | ||
e72f979a | 1337 | if ((sym->ns->proc_name |
1338 | && sym->ns->proc_name->backend_decl == current_function_decl) | |
cad0ddcf | 1339 | || sym->attr.contained) |
1340 | gfc_add_decl_to_function (decl); | |
cf269acc | 1341 | else if (sym->ns->proc_name->attr.flavor != FL_MODULE) |
cad0ddcf | 1342 | gfc_add_decl_to_parent_function (decl); |
1343 | ||
1344 | sym->backend_decl = decl; | |
1345 | ||
cf269acc | 1346 | /* If a variable is USE associated, it's always external. */ |
1347 | if (sym->attr.use_assoc) | |
1348 | { | |
1349 | DECL_EXTERNAL (decl) = 1; | |
1350 | TREE_PUBLIC (decl) = 1; | |
1351 | } | |
1352 | else if (sym->module && sym->ns->proc_name->attr.flavor == FL_MODULE) | |
1353 | { | |
1354 | /* This is the declaration of a module variable. */ | |
1355 | TREE_PUBLIC (decl) = 1; | |
1356 | TREE_STATIC (decl) = 1; | |
1357 | } | |
1358 | ||
cad0ddcf | 1359 | if (!sym->attr.use_assoc |
1360 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
1361 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
1362 | TREE_STATIC (decl) = 1; | |
1363 | ||
1364 | if (TREE_STATIC (decl) && sym->value) | |
1365 | { | |
1366 | /* Add static initializer. */ | |
1367 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
9c2eafdb | 1368 | TREE_TYPE (decl), |
1369 | sym->attr.proc_pointer ? false : sym->attr.dimension, | |
1370 | sym->attr.proc_pointer); | |
cad0ddcf | 1371 | } |
1372 | ||
36b0a1b0 | 1373 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1374 | decl_attributes (&decl, attributes, 0); | |
1375 | ||
cad0ddcf | 1376 | return decl; |
1377 | } | |
1378 | ||
1379 | ||
4ee9c684 | 1380 | /* Get a basic decl for an external function. */ |
1381 | ||
1382 | tree | |
1383 | gfc_get_extern_function_decl (gfc_symbol * sym) | |
1384 | { | |
1385 | tree type; | |
1386 | tree fndecl; | |
36b0a1b0 | 1387 | tree attributes; |
4ee9c684 | 1388 | gfc_expr e; |
1389 | gfc_intrinsic_sym *isym; | |
1390 | gfc_expr argexpr; | |
17000b91 | 1391 | char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */ |
4ee9c684 | 1392 | tree name; |
1393 | tree mangled_name; | |
83aeedb9 | 1394 | gfc_gsymbol *gsym; |
4ee9c684 | 1395 | |
1396 | if (sym->backend_decl) | |
1397 | return sym->backend_decl; | |
1398 | ||
1b716045 | 1399 | /* We should never be creating external decls for alternate entry points. |
1400 | The procedure may be an alternate entry point, but we don't want/need | |
1401 | to know that. */ | |
22d678e8 | 1402 | gcc_assert (!(sym->attr.entry || sym->attr.entry_master)); |
1b716045 | 1403 | |
cad0ddcf | 1404 | if (sym->attr.proc_pointer) |
1405 | return get_proc_pointer_decl (sym); | |
1406 | ||
83aeedb9 | 1407 | /* See if this is an external procedure from the same file. If so, |
1408 | return the backend_decl. */ | |
1409 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->name); | |
1410 | ||
1411 | if (gfc_option.flag_whole_file | |
7ea64434 | 1412 | && !sym->attr.use_assoc |
83aeedb9 | 1413 | && !sym->backend_decl |
1414 | && gsym && gsym->ns | |
1415 | && ((gsym->type == GSYM_SUBROUTINE) || (gsym->type == GSYM_FUNCTION)) | |
d896f9b3 | 1416 | && (gsym->ns->proc_name->backend_decl || !sym->attr.intrinsic)) |
83aeedb9 | 1417 | { |
d896f9b3 | 1418 | if (!gsym->ns->proc_name->backend_decl) |
1419 | { | |
1420 | /* By construction, the external function cannot be | |
1421 | a contained procedure. */ | |
1422 | locus old_loc; | |
1423 | tree save_fn_decl = current_function_decl; | |
1424 | ||
1425 | current_function_decl = NULL_TREE; | |
1426 | gfc_get_backend_locus (&old_loc); | |
1427 | push_cfun (cfun); | |
1428 | ||
1429 | gfc_create_function_decl (gsym->ns, true); | |
1430 | ||
1431 | pop_cfun (); | |
1432 | gfc_set_backend_locus (&old_loc); | |
1433 | current_function_decl = save_fn_decl; | |
1434 | } | |
1435 | ||
83aeedb9 | 1436 | /* If the namespace has entries, the proc_name is the |
1437 | entry master. Find the entry and use its backend_decl. | |
1438 | otherwise, use the proc_name backend_decl. */ | |
1439 | if (gsym->ns->entries) | |
1440 | { | |
1441 | gfc_entry_list *entry = gsym->ns->entries; | |
1442 | ||
1443 | for (; entry; entry = entry->next) | |
1444 | { | |
1445 | if (strcmp (gsym->name, entry->sym->name) == 0) | |
1446 | { | |
1447 | sym->backend_decl = entry->sym->backend_decl; | |
1448 | break; | |
1449 | } | |
1450 | } | |
1451 | } | |
1452 | else | |
1453 | { | |
1454 | sym->backend_decl = gsym->ns->proc_name->backend_decl; | |
1455 | } | |
1456 | ||
1457 | if (sym->backend_decl) | |
1458 | return sym->backend_decl; | |
1459 | } | |
1460 | ||
7ea64434 | 1461 | /* See if this is a module procedure from the same file. If so, |
1462 | return the backend_decl. */ | |
1463 | if (sym->module) | |
1464 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
1465 | ||
1466 | if (gfc_option.flag_whole_file | |
1467 | && gsym && gsym->ns | |
1468 | && gsym->type == GSYM_MODULE) | |
1469 | { | |
1470 | gfc_symbol *s; | |
1471 | ||
1472 | s = NULL; | |
1473 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
1474 | if (s && s->backend_decl) | |
1475 | { | |
1476 | sym->backend_decl = s->backend_decl; | |
1477 | return sym->backend_decl; | |
1478 | } | |
1479 | } | |
1480 | ||
4ee9c684 | 1481 | if (sym->attr.intrinsic) |
1482 | { | |
1483 | /* Call the resolution function to get the actual name. This is | |
1484 | a nasty hack which relies on the resolution functions only looking | |
1485 | at the first argument. We pass NULL for the second argument | |
1486 | otherwise things like AINT get confused. */ | |
1487 | isym = gfc_find_function (sym->name); | |
22d678e8 | 1488 | gcc_assert (isym->resolve.f0 != NULL); |
4ee9c684 | 1489 | |
1490 | memset (&e, 0, sizeof (e)); | |
1491 | e.expr_type = EXPR_FUNCTION; | |
1492 | ||
1493 | memset (&argexpr, 0, sizeof (argexpr)); | |
22d678e8 | 1494 | gcc_assert (isym->formal); |
4ee9c684 | 1495 | argexpr.ts = isym->formal->ts; |
1496 | ||
1497 | if (isym->formal->next == NULL) | |
1498 | isym->resolve.f1 (&e, &argexpr); | |
1499 | else | |
1500 | { | |
37e0271a | 1501 | if (isym->formal->next->next == NULL) |
1502 | isym->resolve.f2 (&e, &argexpr, NULL); | |
1503 | else | |
1504 | { | |
7fe55cc9 | 1505 | if (isym->formal->next->next->next == NULL) |
1506 | isym->resolve.f3 (&e, &argexpr, NULL, NULL); | |
1507 | else | |
1508 | { | |
1509 | /* All specific intrinsics take less than 5 arguments. */ | |
1510 | gcc_assert (isym->formal->next->next->next->next == NULL); | |
1511 | isym->resolve.f4 (&e, &argexpr, NULL, NULL, NULL); | |
1512 | } | |
37e0271a | 1513 | } |
4ee9c684 | 1514 | } |
bdaed7d2 | 1515 | |
1516 | if (gfc_option.flag_f2c | |
1517 | && ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind) | |
1518 | || e.ts.type == BT_COMPLEX)) | |
1519 | { | |
1520 | /* Specific which needs a different implementation if f2c | |
1521 | calling conventions are used. */ | |
17000b91 | 1522 | sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name); |
bdaed7d2 | 1523 | } |
1524 | else | |
17000b91 | 1525 | sprintf (s, "_gfortran_specific%s", e.value.function.name); |
bdaed7d2 | 1526 | |
4ee9c684 | 1527 | name = get_identifier (s); |
1528 | mangled_name = name; | |
1529 | } | |
1530 | else | |
1531 | { | |
1532 | name = gfc_sym_identifier (sym); | |
1533 | mangled_name = gfc_sym_mangled_function_id (sym); | |
1534 | } | |
1535 | ||
1536 | type = gfc_get_function_type (sym); | |
e60a6f7b | 1537 | fndecl = build_decl (input_location, |
1538 | FUNCTION_DECL, name, type); | |
4ee9c684 | 1539 | |
1236e28b | 1540 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1541 | decl_attributes (&fndecl, attributes, 0); | |
1542 | ||
1543 | gfc_set_decl_assembler_name (fndecl, mangled_name); | |
4ee9c684 | 1544 | |
1545 | /* Set the context of this decl. */ | |
1546 | if (0 && sym->ns && sym->ns->proc_name) | |
1547 | { | |
1548 | /* TODO: Add external decls to the appropriate scope. */ | |
1549 | DECL_CONTEXT (fndecl) = sym->ns->proc_name->backend_decl; | |
1550 | } | |
1551 | else | |
1552 | { | |
f888a3fb | 1553 | /* Global declaration, e.g. intrinsic subroutine. */ |
4ee9c684 | 1554 | DECL_CONTEXT (fndecl) = NULL_TREE; |
1555 | } | |
1556 | ||
1557 | DECL_EXTERNAL (fndecl) = 1; | |
1558 | ||
f888a3fb | 1559 | /* This specifies if a function is globally addressable, i.e. it is |
4ee9c684 | 1560 | the opposite of declaring static in C. */ |
1561 | TREE_PUBLIC (fndecl) = 1; | |
1562 | ||
1563 | /* Set attributes for PURE functions. A call to PURE function in the | |
1564 | Fortran 95 sense is both pure and without side effects in the C | |
1565 | sense. */ | |
1566 | if (sym->attr.pure || sym->attr.elemental) | |
1567 | { | |
4d4b9f0e | 1568 | if (sym->attr.function && !gfc_return_by_reference (sym)) |
9c2a0c05 | 1569 | DECL_PURE_P (fndecl) = 1; |
be393645 | 1570 | /* TODO: check if pure SUBROUTINEs don't have INTENT(OUT) |
1571 | parameters and don't use alternate returns (is this | |
1572 | allowed?). In that case, calls to them are meaningless, and | |
1b716045 | 1573 | can be optimized away. See also in build_function_decl(). */ |
be393645 | 1574 | TREE_SIDE_EFFECTS (fndecl) = 0; |
4ee9c684 | 1575 | } |
1576 | ||
6e27d773 | 1577 | /* Mark non-returning functions. */ |
1578 | if (sym->attr.noreturn) | |
1579 | TREE_THIS_VOLATILE(fndecl) = 1; | |
1580 | ||
4ee9c684 | 1581 | sym->backend_decl = fndecl; |
1582 | ||
1583 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1584 | pushdecl_top_level (fndecl); | |
1585 | ||
1586 | return fndecl; | |
1587 | } | |
1588 | ||
1589 | ||
1590 | /* Create a declaration for a procedure. For external functions (in the C | |
1b716045 | 1591 | sense) use gfc_get_extern_function_decl. HAS_ENTRIES is true if this is |
1592 | a master function with alternate entry points. */ | |
4ee9c684 | 1593 | |
1b716045 | 1594 | static void |
d896f9b3 | 1595 | build_function_decl (gfc_symbol * sym, bool global) |
4ee9c684 | 1596 | { |
36b0a1b0 | 1597 | tree fndecl, type, attributes; |
4ee9c684 | 1598 | symbol_attribute attr; |
1b716045 | 1599 | tree result_decl; |
4ee9c684 | 1600 | gfc_formal_arglist *f; |
1601 | ||
22d678e8 | 1602 | gcc_assert (!sym->backend_decl); |
1603 | gcc_assert (!sym->attr.external); | |
4ee9c684 | 1604 | |
b31f705b | 1605 | /* Set the line and filename. sym->declared_at seems to point to the |
1606 | last statement for subroutines, but it'll do for now. */ | |
1607 | gfc_set_backend_locus (&sym->declared_at); | |
1608 | ||
4ee9c684 | 1609 | /* Allow only one nesting level. Allow public declarations. */ |
22d678e8 | 1610 | gcc_assert (current_function_decl == NULL_TREE |
df4d540f | 1611 | || DECL_CONTEXT (current_function_decl) == NULL_TREE |
1612 | || TREE_CODE (DECL_CONTEXT (current_function_decl)) | |
1613 | == NAMESPACE_DECL); | |
4ee9c684 | 1614 | |
1615 | type = gfc_get_function_type (sym); | |
e60a6f7b | 1616 | fndecl = build_decl (input_location, |
1617 | FUNCTION_DECL, gfc_sym_identifier (sym), type); | |
4ee9c684 | 1618 | |
1236e28b | 1619 | attr = sym->attr; |
1620 | ||
1621 | attributes = add_attributes_to_decl (attr, NULL_TREE); | |
1622 | decl_attributes (&fndecl, attributes, 0); | |
1623 | ||
4ee9c684 | 1624 | /* Perform name mangling if this is a top level or module procedure. */ |
1625 | if (current_function_decl == NULL_TREE) | |
1236e28b | 1626 | gfc_set_decl_assembler_name (fndecl, gfc_sym_mangled_function_id (sym)); |
4ee9c684 | 1627 | |
1628 | /* Figure out the return type of the declared function, and build a | |
f888a3fb | 1629 | RESULT_DECL for it. If this is a subroutine with alternate |
4ee9c684 | 1630 | returns, build a RESULT_DECL for it. */ |
4ee9c684 | 1631 | result_decl = NULL_TREE; |
1632 | /* TODO: Shouldn't this just be TREE_TYPE (TREE_TYPE (fndecl)). */ | |
1633 | if (attr.function) | |
1634 | { | |
1635 | if (gfc_return_by_reference (sym)) | |
1636 | type = void_type_node; | |
1637 | else | |
1638 | { | |
1639 | if (sym->result != sym) | |
1640 | result_decl = gfc_sym_identifier (sym->result); | |
1641 | ||
1642 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
1643 | } | |
1644 | } | |
1645 | else | |
1646 | { | |
1647 | /* Look for alternate return placeholders. */ | |
1648 | int has_alternate_returns = 0; | |
1649 | for (f = sym->formal; f; f = f->next) | |
1650 | { | |
1651 | if (f->sym == NULL) | |
1652 | { | |
1653 | has_alternate_returns = 1; | |
1654 | break; | |
1655 | } | |
1656 | } | |
1657 | ||
1658 | if (has_alternate_returns) | |
1659 | type = integer_type_node; | |
1660 | else | |
1661 | type = void_type_node; | |
1662 | } | |
1663 | ||
e60a6f7b | 1664 | result_decl = build_decl (input_location, |
1665 | RESULT_DECL, result_decl, type); | |
540edea7 | 1666 | DECL_ARTIFICIAL (result_decl) = 1; |
1667 | DECL_IGNORED_P (result_decl) = 1; | |
4ee9c684 | 1668 | DECL_CONTEXT (result_decl) = fndecl; |
1669 | DECL_RESULT (fndecl) = result_decl; | |
1670 | ||
1671 | /* Don't call layout_decl for a RESULT_DECL. | |
f888a3fb | 1672 | layout_decl (result_decl, 0); */ |
4ee9c684 | 1673 | |
4ee9c684 | 1674 | /* Set up all attributes for the function. */ |
1675 | DECL_CONTEXT (fndecl) = current_function_decl; | |
1676 | DECL_EXTERNAL (fndecl) = 0; | |
1677 | ||
9d138f47 | 1678 | /* This specifies if a function is globally visible, i.e. it is |
dfc222eb | 1679 | the opposite of declaring static in C. */ |
1b716045 | 1680 | if (DECL_CONTEXT (fndecl) == NULL_TREE |
7257a5d2 | 1681 | && !sym->attr.entry_master && !sym->attr.is_main_program) |
4ee9c684 | 1682 | TREE_PUBLIC (fndecl) = 1; |
1683 | ||
1684 | /* TREE_STATIC means the function body is defined here. */ | |
e4b2c26c | 1685 | TREE_STATIC (fndecl) = 1; |
4ee9c684 | 1686 | |
f888a3fb | 1687 | /* Set attributes for PURE functions. A call to a PURE function in the |
4ee9c684 | 1688 | Fortran 95 sense is both pure and without side effects in the C |
1689 | sense. */ | |
1690 | if (attr.pure || attr.elemental) | |
1691 | { | |
be393645 | 1692 | /* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments |
a0527218 | 1693 | including an alternate return. In that case it can also be |
231e961a | 1694 | marked as PURE. See also in gfc_get_extern_function_decl(). */ |
4c319962 | 1695 | if (attr.function && !gfc_return_by_reference (sym)) |
9c2a0c05 | 1696 | DECL_PURE_P (fndecl) = 1; |
4ee9c684 | 1697 | TREE_SIDE_EFFECTS (fndecl) = 0; |
1698 | } | |
1699 | ||
36b0a1b0 | 1700 | |
4ee9c684 | 1701 | /* Layout the function declaration and put it in the binding level |
1702 | of the current function. */ | |
d896f9b3 | 1703 | |
1704 | if (global) | |
1705 | pushdecl_top_level (fndecl); | |
1706 | else | |
1707 | pushdecl (fndecl); | |
1b716045 | 1708 | |
1709 | sym->backend_decl = fndecl; | |
1710 | } | |
1711 | ||
1712 | ||
1713 | /* Create the DECL_ARGUMENTS for a procedure. */ | |
1714 | ||
1715 | static void | |
1716 | create_function_arglist (gfc_symbol * sym) | |
1717 | { | |
1718 | tree fndecl; | |
1719 | gfc_formal_arglist *f; | |
d4163395 | 1720 | tree typelist, hidden_typelist; |
1721 | tree arglist, hidden_arglist; | |
1b716045 | 1722 | tree type; |
1723 | tree parm; | |
1724 | ||
1725 | fndecl = sym->backend_decl; | |
1726 | ||
e4b2c26c | 1727 | /* Build formal argument list. Make sure that their TREE_CONTEXT is |
1728 | the new FUNCTION_DECL node. */ | |
e4b2c26c | 1729 | arglist = NULL_TREE; |
d4163395 | 1730 | hidden_arglist = NULL_TREE; |
e4b2c26c | 1731 | typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
1b716045 | 1732 | |
1733 | if (sym->attr.entry_master) | |
1734 | { | |
1735 | type = TREE_VALUE (typelist); | |
e60a6f7b | 1736 | parm = build_decl (input_location, |
1737 | PARM_DECL, get_identifier ("__entry"), type); | |
1b716045 | 1738 | |
1739 | DECL_CONTEXT (parm) = fndecl; | |
1740 | DECL_ARG_TYPE (parm) = type; | |
1741 | TREE_READONLY (parm) = 1; | |
b9c7fce7 | 1742 | gfc_finish_decl (parm); |
d95efb59 | 1743 | DECL_ARTIFICIAL (parm) = 1; |
1b716045 | 1744 | |
1745 | arglist = chainon (arglist, parm); | |
1746 | typelist = TREE_CHAIN (typelist); | |
1747 | } | |
1748 | ||
e4b2c26c | 1749 | if (gfc_return_by_reference (sym)) |
4ee9c684 | 1750 | { |
d4163395 | 1751 | tree type = TREE_VALUE (typelist), length = NULL; |
4ee9c684 | 1752 | |
e4b2c26c | 1753 | if (sym->ts.type == BT_CHARACTER) |
1754 | { | |
e4b2c26c | 1755 | /* Length of character result. */ |
d4163395 | 1756 | tree len_type = TREE_VALUE (TREE_CHAIN (typelist)); |
1757 | gcc_assert (len_type == gfc_charlen_type_node); | |
4ee9c684 | 1758 | |
e60a6f7b | 1759 | length = build_decl (input_location, |
1760 | PARM_DECL, | |
e4b2c26c | 1761 | get_identifier (".__result"), |
d4163395 | 1762 | len_type); |
eeebe20b | 1763 | if (!sym->ts.u.cl->length) |
e4b2c26c | 1764 | { |
eeebe20b | 1765 | sym->ts.u.cl->backend_decl = length; |
e4b2c26c | 1766 | TREE_USED (length) = 1; |
4ee9c684 | 1767 | } |
22d678e8 | 1768 | gcc_assert (TREE_CODE (length) == PARM_DECL); |
e4b2c26c | 1769 | DECL_CONTEXT (length) = fndecl; |
d4163395 | 1770 | DECL_ARG_TYPE (length) = len_type; |
e4b2c26c | 1771 | TREE_READONLY (length) = 1; |
b5b40b3f | 1772 | DECL_ARTIFICIAL (length) = 1; |
b9c7fce7 | 1773 | gfc_finish_decl (length); |
eeebe20b | 1774 | if (sym->ts.u.cl->backend_decl == NULL |
1775 | || sym->ts.u.cl->backend_decl == length) | |
d4163395 | 1776 | { |
1777 | gfc_symbol *arg; | |
1778 | tree backend_decl; | |
4ee9c684 | 1779 | |
eeebe20b | 1780 | if (sym->ts.u.cl->backend_decl == NULL) |
d4163395 | 1781 | { |
e60a6f7b | 1782 | tree len = build_decl (input_location, |
1783 | VAR_DECL, | |
d4163395 | 1784 | get_identifier ("..__result"), |
1785 | gfc_charlen_type_node); | |
1786 | DECL_ARTIFICIAL (len) = 1; | |
1787 | TREE_USED (len) = 1; | |
eeebe20b | 1788 | sym->ts.u.cl->backend_decl = len; |
d4163395 | 1789 | } |
4ee9c684 | 1790 | |
d4163395 | 1791 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ |
1792 | arg = sym->result ? sym->result : sym; | |
1793 | backend_decl = arg->backend_decl; | |
1794 | /* Temporary clear it, so that gfc_sym_type creates complete | |
1795 | type. */ | |
1796 | arg->backend_decl = NULL; | |
1797 | type = gfc_sym_type (arg); | |
1798 | arg->backend_decl = backend_decl; | |
1799 | type = build_reference_type (type); | |
1800 | } | |
1801 | } | |
4ee9c684 | 1802 | |
e60a6f7b | 1803 | parm = build_decl (input_location, |
1804 | PARM_DECL, get_identifier ("__result"), type); | |
4ee9c684 | 1805 | |
d4163395 | 1806 | DECL_CONTEXT (parm) = fndecl; |
1807 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
1808 | TREE_READONLY (parm) = 1; | |
1809 | DECL_ARTIFICIAL (parm) = 1; | |
b9c7fce7 | 1810 | gfc_finish_decl (parm); |
4ee9c684 | 1811 | |
d4163395 | 1812 | arglist = chainon (arglist, parm); |
1813 | typelist = TREE_CHAIN (typelist); | |
4ee9c684 | 1814 | |
d4163395 | 1815 | if (sym->ts.type == BT_CHARACTER) |
1816 | { | |
1817 | gfc_allocate_lang_decl (parm); | |
1818 | arglist = chainon (arglist, length); | |
e4b2c26c | 1819 | typelist = TREE_CHAIN (typelist); |
1820 | } | |
1821 | } | |
4ee9c684 | 1822 | |
d4163395 | 1823 | hidden_typelist = typelist; |
1824 | for (f = sym->formal; f; f = f->next) | |
1825 | if (f->sym != NULL) /* Ignore alternate returns. */ | |
1826 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
1827 | ||
e4b2c26c | 1828 | for (f = sym->formal; f; f = f->next) |
1829 | { | |
1830 | char name[GFC_MAX_SYMBOL_LEN + 2]; | |
d4163395 | 1831 | |
e4b2c26c | 1832 | /* Ignore alternate returns. */ |
1833 | if (f->sym == NULL) | |
1834 | continue; | |
4ee9c684 | 1835 | |
e4b2c26c | 1836 | type = TREE_VALUE (typelist); |
4ee9c684 | 1837 | |
296db1d1 | 1838 | if (f->sym->ts.type == BT_CHARACTER |
1839 | && (!sym->attr.is_bind_c || sym->attr.entry_master)) | |
d4163395 | 1840 | { |
1841 | tree len_type = TREE_VALUE (hidden_typelist); | |
1842 | tree length = NULL_TREE; | |
1843 | gcc_assert (len_type == gfc_charlen_type_node); | |
1844 | ||
1845 | strcpy (&name[1], f->sym->name); | |
1846 | name[0] = '_'; | |
e60a6f7b | 1847 | length = build_decl (input_location, |
1848 | PARM_DECL, get_identifier (name), len_type); | |
4ee9c684 | 1849 | |
d4163395 | 1850 | hidden_arglist = chainon (hidden_arglist, length); |
1851 | DECL_CONTEXT (length) = fndecl; | |
1852 | DECL_ARTIFICIAL (length) = 1; | |
1853 | DECL_ARG_TYPE (length) = len_type; | |
1854 | TREE_READONLY (length) = 1; | |
b9c7fce7 | 1855 | gfc_finish_decl (length); |
4ee9c684 | 1856 | |
a4abf8a0 | 1857 | /* Remember the passed value. */ |
eeebe20b | 1858 | if (f->sym->ts.u.cl->passed_length != NULL) |
6be7c32c | 1859 | { |
1860 | /* This can happen if the same type is used for multiple | |
1861 | arguments. We need to copy cl as otherwise | |
1862 | cl->passed_length gets overwritten. */ | |
d270ce52 | 1863 | f->sym->ts.u.cl = gfc_new_charlen (f->sym->ns, f->sym->ts.u.cl); |
6be7c32c | 1864 | } |
eeebe20b | 1865 | f->sym->ts.u.cl->passed_length = length; |
4ee9c684 | 1866 | |
d4163395 | 1867 | /* Use the passed value for assumed length variables. */ |
eeebe20b | 1868 | if (!f->sym->ts.u.cl->length) |
4ee9c684 | 1869 | { |
d4163395 | 1870 | TREE_USED (length) = 1; |
eeebe20b | 1871 | gcc_assert (!f->sym->ts.u.cl->backend_decl); |
1872 | f->sym->ts.u.cl->backend_decl = length; | |
d4163395 | 1873 | } |
1874 | ||
1875 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
1876 | ||
eeebe20b | 1877 | if (f->sym->ts.u.cl->backend_decl == NULL |
1878 | || f->sym->ts.u.cl->backend_decl == length) | |
d4163395 | 1879 | { |
eeebe20b | 1880 | if (f->sym->ts.u.cl->backend_decl == NULL) |
d4163395 | 1881 | gfc_create_string_length (f->sym); |
1882 | ||
1883 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ | |
1884 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
1885 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
1886 | else | |
1887 | type = gfc_sym_type (f->sym); | |
4ee9c684 | 1888 | } |
4ee9c684 | 1889 | } |
1890 | ||
d4163395 | 1891 | /* For non-constant length array arguments, make sure they use |
1892 | a different type node from TYPE_ARG_TYPES type. */ | |
1893 | if (f->sym->attr.dimension | |
1894 | && type == TREE_VALUE (typelist) | |
1895 | && TREE_CODE (type) == POINTER_TYPE | |
1896 | && GFC_ARRAY_TYPE_P (type) | |
1897 | && f->sym->as->type != AS_ASSUMED_SIZE | |
1898 | && ! COMPLETE_TYPE_P (TREE_TYPE (type))) | |
1899 | { | |
1900 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
1901 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
1902 | else | |
1903 | type = gfc_sym_type (f->sym); | |
1904 | } | |
1905 | ||
cad0ddcf | 1906 | if (f->sym->attr.proc_pointer) |
1907 | type = build_pointer_type (type); | |
1908 | ||
69b1505f | 1909 | /* Build the argument declaration. */ |
e60a6f7b | 1910 | parm = build_decl (input_location, |
1911 | PARM_DECL, gfc_sym_identifier (f->sym), type); | |
d4163395 | 1912 | |
1913 | /* Fill in arg stuff. */ | |
1914 | DECL_CONTEXT (parm) = fndecl; | |
1915 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
1916 | /* All implementation args are read-only. */ | |
1917 | TREE_READONLY (parm) = 1; | |
98923a84 | 1918 | if (POINTER_TYPE_P (type) |
1919 | && (!f->sym->attr.proc_pointer | |
1920 | && f->sym->attr.flavor != FL_PROCEDURE)) | |
1921 | DECL_BY_REFERENCE (parm) = 1; | |
d4163395 | 1922 | |
b9c7fce7 | 1923 | gfc_finish_decl (parm); |
d4163395 | 1924 | |
1925 | f->sym->backend_decl = parm; | |
1926 | ||
1927 | arglist = chainon (arglist, parm); | |
e4b2c26c | 1928 | typelist = TREE_CHAIN (typelist); |
4ee9c684 | 1929 | } |
e4b2c26c | 1930 | |
465e4a95 | 1931 | /* Add the hidden string length parameters, unless the procedure |
1932 | is bind(C). */ | |
1933 | if (!sym->attr.is_bind_c) | |
1934 | arglist = chainon (arglist, hidden_arglist); | |
d4163395 | 1935 | |
ebe27ea2 | 1936 | gcc_assert (hidden_typelist == NULL_TREE |
1937 | || TREE_VALUE (hidden_typelist) == void_type_node); | |
e4b2c26c | 1938 | DECL_ARGUMENTS (fndecl) = arglist; |
1b716045 | 1939 | } |
e4b2c26c | 1940 | |
1b716045 | 1941 | /* Do the setup necessary before generating the body of a function. */ |
1942 | ||
1943 | static void | |
1944 | trans_function_start (gfc_symbol * sym) | |
1945 | { | |
1946 | tree fndecl; | |
1947 | ||
1948 | fndecl = sym->backend_decl; | |
1949 | ||
f888a3fb | 1950 | /* Let GCC know the current scope is this function. */ |
1b716045 | 1951 | current_function_decl = fndecl; |
1952 | ||
f888a3fb | 1953 | /* Let the world know what we're about to do. */ |
1b716045 | 1954 | announce_function (fndecl); |
1955 | ||
1956 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1957 | { | |
f888a3fb | 1958 | /* Create RTL for function declaration. */ |
1b716045 | 1959 | rest_of_decl_compilation (fndecl, 1, 0); |
1960 | } | |
1961 | ||
f888a3fb | 1962 | /* Create RTL for function definition. */ |
1b716045 | 1963 | make_decl_rtl (fndecl); |
1964 | ||
1b716045 | 1965 | init_function_start (fndecl); |
1966 | ||
1967 | /* Even though we're inside a function body, we still don't want to | |
1968 | call expand_expr to calculate the size of a variable-sized array. | |
1969 | We haven't necessarily assigned RTL to all variables yet, so it's | |
1970 | not safe to try to expand expressions involving them. */ | |
18d50ae6 | 1971 | cfun->dont_save_pending_sizes_p = 1; |
1b716045 | 1972 | |
f888a3fb | 1973 | /* function.c requires a push at the start of the function. */ |
1b716045 | 1974 | pushlevel (0); |
1975 | } | |
1976 | ||
1977 | /* Create thunks for alternate entry points. */ | |
1978 | ||
1979 | static void | |
d896f9b3 | 1980 | build_entry_thunks (gfc_namespace * ns, bool global) |
1b716045 | 1981 | { |
1982 | gfc_formal_arglist *formal; | |
1983 | gfc_formal_arglist *thunk_formal; | |
1984 | gfc_entry_list *el; | |
1985 | gfc_symbol *thunk_sym; | |
1986 | stmtblock_t body; | |
1987 | tree thunk_fndecl; | |
1b716045 | 1988 | tree tmp; |
b31f705b | 1989 | locus old_loc; |
1b716045 | 1990 | |
1991 | /* This should always be a toplevel function. */ | |
22d678e8 | 1992 | gcc_assert (current_function_decl == NULL_TREE); |
1b716045 | 1993 | |
b31f705b | 1994 | gfc_get_backend_locus (&old_loc); |
1b716045 | 1995 | for (el = ns->entries; el; el = el->next) |
1996 | { | |
414c3a2c | 1997 | VEC(tree,gc) *args = NULL; |
1998 | VEC(tree,gc) *string_args = NULL; | |
1999 | ||
1b716045 | 2000 | thunk_sym = el->sym; |
2001 | ||
d896f9b3 | 2002 | build_function_decl (thunk_sym, global); |
1b716045 | 2003 | create_function_arglist (thunk_sym); |
2004 | ||
2005 | trans_function_start (thunk_sym); | |
2006 | ||
2007 | thunk_fndecl = thunk_sym->backend_decl; | |
2008 | ||
e5004242 | 2009 | gfc_init_block (&body); |
1b716045 | 2010 | |
f888a3fb | 2011 | /* Pass extra parameter identifying this entry point. */ |
7016c612 | 2012 | tmp = build_int_cst (gfc_array_index_type, el->id); |
414c3a2c | 2013 | VEC_safe_push (tree, gc, args, tmp); |
1b716045 | 2014 | |
c6871095 | 2015 | if (thunk_sym->attr.function) |
2016 | { | |
2017 | if (gfc_return_by_reference (ns->proc_name)) | |
2018 | { | |
2019 | tree ref = DECL_ARGUMENTS (current_function_decl); | |
414c3a2c | 2020 | VEC_safe_push (tree, gc, args, ref); |
c6871095 | 2021 | if (ns->proc_name->ts.type == BT_CHARACTER) |
1767a056 | 2022 | VEC_safe_push (tree, gc, args, DECL_CHAIN (ref)); |
c6871095 | 2023 | } |
2024 | } | |
2025 | ||
1b716045 | 2026 | for (formal = ns->proc_name->formal; formal; formal = formal->next) |
2027 | { | |
c6871095 | 2028 | /* Ignore alternate returns. */ |
2029 | if (formal->sym == NULL) | |
2030 | continue; | |
2031 | ||
1b716045 | 2032 | /* We don't have a clever way of identifying arguments, so resort to |
2033 | a brute-force search. */ | |
2034 | for (thunk_formal = thunk_sym->formal; | |
2035 | thunk_formal; | |
2036 | thunk_formal = thunk_formal->next) | |
2037 | { | |
2038 | if (thunk_formal->sym == formal->sym) | |
2039 | break; | |
2040 | } | |
2041 | ||
2042 | if (thunk_formal) | |
2043 | { | |
2044 | /* Pass the argument. */ | |
d95efb59 | 2045 | DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1; |
414c3a2c | 2046 | VEC_safe_push (tree, gc, args, thunk_formal->sym->backend_decl); |
1b716045 | 2047 | if (formal->sym->ts.type == BT_CHARACTER) |
2048 | { | |
eeebe20b | 2049 | tmp = thunk_formal->sym->ts.u.cl->backend_decl; |
414c3a2c | 2050 | VEC_safe_push (tree, gc, string_args, tmp); |
1b716045 | 2051 | } |
2052 | } | |
2053 | else | |
2054 | { | |
2055 | /* Pass NULL for a missing argument. */ | |
414c3a2c | 2056 | VEC_safe_push (tree, gc, args, null_pointer_node); |
1b716045 | 2057 | if (formal->sym->ts.type == BT_CHARACTER) |
2058 | { | |
7d3075f6 | 2059 | tmp = build_int_cst (gfc_charlen_type_node, 0); |
414c3a2c | 2060 | VEC_safe_push (tree, gc, string_args, tmp); |
1b716045 | 2061 | } |
2062 | } | |
2063 | } | |
2064 | ||
2065 | /* Call the master function. */ | |
414c3a2c | 2066 | VEC_safe_splice (tree, gc, args, string_args); |
1b716045 | 2067 | tmp = ns->proc_name->backend_decl; |
414c3a2c | 2068 | tmp = build_call_expr_loc_vec (input_location, tmp, args); |
c6871095 | 2069 | if (ns->proc_name->attr.mixed_entry_master) |
2070 | { | |
2071 | tree union_decl, field; | |
2072 | tree master_type = TREE_TYPE (ns->proc_name->backend_decl); | |
2073 | ||
e60a6f7b | 2074 | union_decl = build_decl (input_location, |
2075 | VAR_DECL, get_identifier ("__result"), | |
c6871095 | 2076 | TREE_TYPE (master_type)); |
2077 | DECL_ARTIFICIAL (union_decl) = 1; | |
2078 | DECL_EXTERNAL (union_decl) = 0; | |
2079 | TREE_PUBLIC (union_decl) = 0; | |
2080 | TREE_USED (union_decl) = 1; | |
2081 | layout_decl (union_decl, 0); | |
2082 | pushdecl (union_decl); | |
2083 | ||
2084 | DECL_CONTEXT (union_decl) = current_function_decl; | |
f75d6b8a | 2085 | tmp = fold_build2 (MODIFY_EXPR, TREE_TYPE (union_decl), |
2086 | union_decl, tmp); | |
c6871095 | 2087 | gfc_add_expr_to_block (&body, tmp); |
2088 | ||
2089 | for (field = TYPE_FIELDS (TREE_TYPE (union_decl)); | |
1767a056 | 2090 | field; field = DECL_CHAIN (field)) |
c6871095 | 2091 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2092 | thunk_sym->result->name) == 0) | |
2093 | break; | |
2094 | gcc_assert (field != NULL_TREE); | |
f75d6b8a | 2095 | tmp = fold_build3 (COMPONENT_REF, TREE_TYPE (field), |
2096 | union_decl, field, NULL_TREE); | |
2097 | tmp = fold_build2 (MODIFY_EXPR, | |
2098 | TREE_TYPE (DECL_RESULT (current_function_decl)), | |
2099 | DECL_RESULT (current_function_decl), tmp); | |
c6871095 | 2100 | tmp = build1_v (RETURN_EXPR, tmp); |
2101 | } | |
2102 | else if (TREE_TYPE (DECL_RESULT (current_function_decl)) | |
2103 | != void_type_node) | |
2104 | { | |
f75d6b8a | 2105 | tmp = fold_build2 (MODIFY_EXPR, |
2106 | TREE_TYPE (DECL_RESULT (current_function_decl)), | |
2107 | DECL_RESULT (current_function_decl), tmp); | |
c6871095 | 2108 | tmp = build1_v (RETURN_EXPR, tmp); |
2109 | } | |
1b716045 | 2110 | gfc_add_expr_to_block (&body, tmp); |
2111 | ||
2112 | /* Finish off this function and send it for code generation. */ | |
2113 | DECL_SAVED_TREE (thunk_fndecl) = gfc_finish_block (&body); | |
e5004242 | 2114 | tmp = getdecls (); |
1b716045 | 2115 | poplevel (1, 0, 1); |
2116 | BLOCK_SUPERCONTEXT (DECL_INITIAL (thunk_fndecl)) = thunk_fndecl; | |
e5004242 | 2117 | DECL_SAVED_TREE (thunk_fndecl) |
2118 | = build3_v (BIND_EXPR, tmp, DECL_SAVED_TREE (thunk_fndecl), | |
2119 | DECL_INITIAL (thunk_fndecl)); | |
1b716045 | 2120 | |
2121 | /* Output the GENERIC tree. */ | |
2122 | dump_function (TDI_original, thunk_fndecl); | |
2123 | ||
2124 | /* Store the end of the function, so that we get good line number | |
2125 | info for the epilogue. */ | |
2126 | cfun->function_end_locus = input_location; | |
2127 | ||
2128 | /* We're leaving the context of this function, so zap cfun. | |
2129 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
2130 | tree_rest_of_compilation. */ | |
87d4aa85 | 2131 | set_cfun (NULL); |
1b716045 | 2132 | |
2133 | current_function_decl = NULL_TREE; | |
2134 | ||
bb982f66 | 2135 | cgraph_finalize_function (thunk_fndecl, true); |
1b716045 | 2136 | |
2137 | /* We share the symbols in the formal argument list with other entry | |
2138 | points and the master function. Clear them so that they are | |
2139 | recreated for each function. */ | |
2140 | for (formal = thunk_sym->formal; formal; formal = formal->next) | |
c6871095 | 2141 | if (formal->sym != NULL) /* Ignore alternate returns. */ |
2142 | { | |
2143 | formal->sym->backend_decl = NULL_TREE; | |
2144 | if (formal->sym->ts.type == BT_CHARACTER) | |
eeebe20b | 2145 | formal->sym->ts.u.cl->backend_decl = NULL_TREE; |
c6871095 | 2146 | } |
2147 | ||
2148 | if (thunk_sym->attr.function) | |
1b716045 | 2149 | { |
c6871095 | 2150 | if (thunk_sym->ts.type == BT_CHARACTER) |
eeebe20b | 2151 | thunk_sym->ts.u.cl->backend_decl = NULL_TREE; |
c6871095 | 2152 | if (thunk_sym->result->ts.type == BT_CHARACTER) |
eeebe20b | 2153 | thunk_sym->result->ts.u.cl->backend_decl = NULL_TREE; |
1b716045 | 2154 | } |
2155 | } | |
b31f705b | 2156 | |
2157 | gfc_set_backend_locus (&old_loc); | |
1b716045 | 2158 | } |
2159 | ||
2160 | ||
2161 | /* Create a decl for a function, and create any thunks for alternate entry | |
d896f9b3 | 2162 | points. If global is true, generate the function in the global binding |
2163 | level, otherwise in the current binding level (which can be global). */ | |
1b716045 | 2164 | |
2165 | void | |
d896f9b3 | 2166 | gfc_create_function_decl (gfc_namespace * ns, bool global) |
1b716045 | 2167 | { |
2168 | /* Create a declaration for the master function. */ | |
d896f9b3 | 2169 | build_function_decl (ns->proc_name, global); |
1b716045 | 2170 | |
f888a3fb | 2171 | /* Compile the entry thunks. */ |
1b716045 | 2172 | if (ns->entries) |
d896f9b3 | 2173 | build_entry_thunks (ns, global); |
1b716045 | 2174 | |
2175 | /* Now create the read argument list. */ | |
2176 | create_function_arglist (ns->proc_name); | |
2177 | } | |
2178 | ||
c750cc52 | 2179 | /* Return the decl used to hold the function return value. If |
3350e716 | 2180 | parent_flag is set, the context is the parent_scope. */ |
4ee9c684 | 2181 | |
2182 | tree | |
c750cc52 | 2183 | gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag) |
4ee9c684 | 2184 | { |
c750cc52 | 2185 | tree decl; |
2186 | tree length; | |
2187 | tree this_fake_result_decl; | |
2188 | tree this_function_decl; | |
4ee9c684 | 2189 | |
2190 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
2191 | ||
c750cc52 | 2192 | if (parent_flag) |
2193 | { | |
2194 | this_fake_result_decl = parent_fake_result_decl; | |
2195 | this_function_decl = DECL_CONTEXT (current_function_decl); | |
2196 | } | |
2197 | else | |
2198 | { | |
2199 | this_fake_result_decl = current_fake_result_decl; | |
2200 | this_function_decl = current_function_decl; | |
2201 | } | |
2202 | ||
c6871095 | 2203 | if (sym |
c750cc52 | 2204 | && sym->ns->proc_name->backend_decl == this_function_decl |
d4163395 | 2205 | && sym->ns->proc_name->attr.entry_master |
c6871095 | 2206 | && sym != sym->ns->proc_name) |
2207 | { | |
d4163395 | 2208 | tree t = NULL, var; |
c750cc52 | 2209 | if (this_fake_result_decl != NULL) |
2210 | for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t)) | |
d4163395 | 2211 | if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0) |
2212 | break; | |
2213 | if (t) | |
2214 | return TREE_VALUE (t); | |
c750cc52 | 2215 | decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag); |
2216 | ||
2217 | if (parent_flag) | |
2218 | this_fake_result_decl = parent_fake_result_decl; | |
2219 | else | |
2220 | this_fake_result_decl = current_fake_result_decl; | |
2221 | ||
d4163395 | 2222 | if (decl && sym->ns->proc_name->attr.mixed_entry_master) |
c6871095 | 2223 | { |
2224 | tree field; | |
2225 | ||
2226 | for (field = TYPE_FIELDS (TREE_TYPE (decl)); | |
1767a056 | 2227 | field; field = DECL_CHAIN (field)) |
c6871095 | 2228 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2229 | sym->name) == 0) | |
2230 | break; | |
2231 | ||
2232 | gcc_assert (field != NULL_TREE); | |
f75d6b8a | 2233 | decl = fold_build3 (COMPONENT_REF, TREE_TYPE (field), |
2234 | decl, field, NULL_TREE); | |
c6871095 | 2235 | } |
c750cc52 | 2236 | |
2237 | var = create_tmp_var_raw (TREE_TYPE (decl), sym->name); | |
2238 | if (parent_flag) | |
2239 | gfc_add_decl_to_parent_function (var); | |
2240 | else | |
2241 | gfc_add_decl_to_function (var); | |
2242 | ||
d4163395 | 2243 | SET_DECL_VALUE_EXPR (var, decl); |
2244 | DECL_HAS_VALUE_EXPR_P (var) = 1; | |
2cf330c4 | 2245 | GFC_DECL_RESULT (var) = 1; |
c750cc52 | 2246 | |
2247 | TREE_CHAIN (this_fake_result_decl) | |
2248 | = tree_cons (get_identifier (sym->name), var, | |
2249 | TREE_CHAIN (this_fake_result_decl)); | |
d4163395 | 2250 | return var; |
c6871095 | 2251 | } |
2252 | ||
c750cc52 | 2253 | if (this_fake_result_decl != NULL_TREE) |
2254 | return TREE_VALUE (this_fake_result_decl); | |
4ee9c684 | 2255 | |
2256 | /* Only when gfc_get_fake_result_decl is called by gfc_trans_return, | |
2257 | sym is NULL. */ | |
2258 | if (!sym) | |
2259 | return NULL_TREE; | |
2260 | ||
d4163395 | 2261 | if (sym->ts.type == BT_CHARACTER) |
4ee9c684 | 2262 | { |
eeebe20b | 2263 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
d4163395 | 2264 | length = gfc_create_string_length (sym); |
2265 | else | |
eeebe20b | 2266 | length = sym->ts.u.cl->backend_decl; |
d4163395 | 2267 | if (TREE_CODE (length) == VAR_DECL |
2268 | && DECL_CONTEXT (length) == NULL_TREE) | |
99042714 | 2269 | gfc_add_decl_to_function (length); |
4ee9c684 | 2270 | } |
2271 | ||
2272 | if (gfc_return_by_reference (sym)) | |
2273 | { | |
c750cc52 | 2274 | decl = DECL_ARGUMENTS (this_function_decl); |
c6871095 | 2275 | |
c750cc52 | 2276 | if (sym->ns->proc_name->backend_decl == this_function_decl |
c6871095 | 2277 | && sym->ns->proc_name->attr.entry_master) |
1767a056 | 2278 | decl = DECL_CHAIN (decl); |
4ee9c684 | 2279 | |
2280 | TREE_USED (decl) = 1; | |
2281 | if (sym->as) | |
2282 | decl = gfc_build_dummy_array_decl (sym, decl); | |
2283 | } | |
2284 | else | |
2285 | { | |
2286 | sprintf (name, "__result_%.20s", | |
c750cc52 | 2287 | IDENTIFIER_POINTER (DECL_NAME (this_function_decl))); |
4ee9c684 | 2288 | |
3350e716 | 2289 | if (!sym->attr.mixed_entry_master && sym->attr.function) |
1e71b314 | 2290 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
e60a6f7b | 2291 | VAR_DECL, get_identifier (name), |
3350e716 | 2292 | gfc_sym_type (sym)); |
2293 | else | |
1e71b314 | 2294 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
e60a6f7b | 2295 | VAR_DECL, get_identifier (name), |
3350e716 | 2296 | TREE_TYPE (TREE_TYPE (this_function_decl))); |
4ee9c684 | 2297 | DECL_ARTIFICIAL (decl) = 1; |
2298 | DECL_EXTERNAL (decl) = 0; | |
2299 | TREE_PUBLIC (decl) = 0; | |
2300 | TREE_USED (decl) = 1; | |
764f1175 | 2301 | GFC_DECL_RESULT (decl) = 1; |
a379e3a9 | 2302 | TREE_ADDRESSABLE (decl) = 1; |
4ee9c684 | 2303 | |
2304 | layout_decl (decl, 0); | |
2305 | ||
c750cc52 | 2306 | if (parent_flag) |
2307 | gfc_add_decl_to_parent_function (decl); | |
2308 | else | |
2309 | gfc_add_decl_to_function (decl); | |
4ee9c684 | 2310 | } |
2311 | ||
c750cc52 | 2312 | if (parent_flag) |
2313 | parent_fake_result_decl = build_tree_list (NULL, decl); | |
2314 | else | |
2315 | current_fake_result_decl = build_tree_list (NULL, decl); | |
4ee9c684 | 2316 | |
2317 | return decl; | |
2318 | } | |
2319 | ||
2320 | ||
2321 | /* Builds a function decl. The remaining parameters are the types of the | |
2322 | function arguments. Negative nargs indicates a varargs function. */ | |
2323 | ||
8ce86007 | 2324 | static tree |
2325 | build_library_function_decl_1 (tree name, const char *spec, | |
2326 | tree rettype, int nargs, va_list p) | |
4ee9c684 | 2327 | { |
2328 | tree arglist; | |
2329 | tree argtype; | |
2330 | tree fntype; | |
2331 | tree fndecl; | |
4ee9c684 | 2332 | int n; |
2333 | ||
2334 | /* Library functions must be declared with global scope. */ | |
22d678e8 | 2335 | gcc_assert (current_function_decl == NULL_TREE); |
4ee9c684 | 2336 | |
4ee9c684 | 2337 | /* Create a list of the argument types. */ |
2338 | for (arglist = NULL_TREE, n = abs (nargs); n > 0; n--) | |
2339 | { | |
2340 | argtype = va_arg (p, tree); | |
2341 | arglist = gfc_chainon_list (arglist, argtype); | |
2342 | } | |
2343 | ||
2344 | if (nargs >= 0) | |
2345 | { | |
2346 | /* Terminate the list. */ | |
2347 | arglist = gfc_chainon_list (arglist, void_type_node); | |
2348 | } | |
2349 | ||
2350 | /* Build the function type and decl. */ | |
2351 | fntype = build_function_type (rettype, arglist); | |
8ce86007 | 2352 | if (spec) |
2353 | { | |
2354 | tree attr_args = build_tree_list (NULL_TREE, | |
2355 | build_string (strlen (spec), spec)); | |
2356 | tree attrs = tree_cons (get_identifier ("fn spec"), | |
2357 | attr_args, TYPE_ATTRIBUTES (fntype)); | |
2358 | fntype = build_type_attribute_variant (fntype, attrs); | |
2359 | } | |
e60a6f7b | 2360 | fndecl = build_decl (input_location, |
2361 | FUNCTION_DECL, name, fntype); | |
4ee9c684 | 2362 | |
2363 | /* Mark this decl as external. */ | |
2364 | DECL_EXTERNAL (fndecl) = 1; | |
2365 | TREE_PUBLIC (fndecl) = 1; | |
2366 | ||
4ee9c684 | 2367 | pushdecl (fndecl); |
2368 | ||
b2c4af5e | 2369 | rest_of_decl_compilation (fndecl, 1, 0); |
4ee9c684 | 2370 | |
2371 | return fndecl; | |
2372 | } | |
2373 | ||
8ce86007 | 2374 | /* Builds a function decl. The remaining parameters are the types of the |
2375 | function arguments. Negative nargs indicates a varargs function. */ | |
2376 | ||
2377 | tree | |
2378 | gfc_build_library_function_decl (tree name, tree rettype, int nargs, ...) | |
2379 | { | |
2380 | tree ret; | |
2381 | va_list args; | |
2382 | va_start (args, nargs); | |
2383 | ret = build_library_function_decl_1 (name, NULL, rettype, nargs, args); | |
2384 | va_end (args); | |
2385 | return ret; | |
2386 | } | |
2387 | ||
2388 | /* Builds a function decl. The remaining parameters are the types of the | |
2389 | function arguments. Negative nargs indicates a varargs function. | |
2390 | The SPEC parameter specifies the function argument and return type | |
2391 | specification according to the fnspec function type attribute. */ | |
2392 | ||
4bf69bc3 | 2393 | tree |
8ce86007 | 2394 | gfc_build_library_function_decl_with_spec (tree name, const char *spec, |
2395 | tree rettype, int nargs, ...) | |
2396 | { | |
2397 | tree ret; | |
2398 | va_list args; | |
2399 | va_start (args, nargs); | |
2400 | ret = build_library_function_decl_1 (name, spec, rettype, nargs, args); | |
2401 | va_end (args); | |
2402 | return ret; | |
2403 | } | |
2404 | ||
4ee9c684 | 2405 | static void |
2406 | gfc_build_intrinsic_function_decls (void) | |
2407 | { | |
90ba9145 | 2408 | tree gfc_int4_type_node = gfc_get_int_type (4); |
2409 | tree gfc_int8_type_node = gfc_get_int_type (8); | |
920e54ef | 2410 | tree gfc_int16_type_node = gfc_get_int_type (16); |
90ba9145 | 2411 | tree gfc_logical4_type_node = gfc_get_logical_type (4); |
40b806de | 2412 | tree pchar1_type_node = gfc_get_pchar_type (1); |
2413 | tree pchar4_type_node = gfc_get_pchar_type (4); | |
90ba9145 | 2414 | |
4ee9c684 | 2415 | /* String functions. */ |
241ecdc7 | 2416 | gfor_fndecl_compare_string = gfc_build_library_function_decl_with_spec ( |
2417 | get_identifier (PREFIX("compare_string")), "..R.R", | |
2418 | integer_type_node, 4, gfc_charlen_type_node, pchar1_type_node, | |
2419 | gfc_charlen_type_node, pchar1_type_node); | |
537824d1 | 2420 | DECL_PURE_P (gfor_fndecl_compare_string) = 1; |
241ecdc7 | 2421 | |
2422 | gfor_fndecl_concat_string = gfc_build_library_function_decl_with_spec ( | |
2423 | get_identifier (PREFIX("concat_string")), "..W.R.R", | |
2424 | void_type_node, 6, gfc_charlen_type_node, pchar1_type_node, | |
2425 | gfc_charlen_type_node, pchar1_type_node, | |
2426 | gfc_charlen_type_node, pchar1_type_node); | |
2427 | ||
2428 | gfor_fndecl_string_len_trim = gfc_build_library_function_decl_with_spec ( | |
2429 | get_identifier (PREFIX("string_len_trim")), "..R", | |
2430 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar1_type_node); | |
537824d1 | 2431 | DECL_PURE_P (gfor_fndecl_string_len_trim) = 1; |
241ecdc7 | 2432 | |
2433 | gfor_fndecl_string_index = gfc_build_library_function_decl_with_spec ( | |
2434 | get_identifier (PREFIX("string_index")), "..R.R.", | |
2435 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2436 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2437 | DECL_PURE_P (gfor_fndecl_string_index) = 1; |
241ecdc7 | 2438 | |
2439 | gfor_fndecl_string_scan = gfc_build_library_function_decl_with_spec ( | |
2440 | get_identifier (PREFIX("string_scan")), "..R.R.", | |
2441 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2442 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2443 | DECL_PURE_P (gfor_fndecl_string_scan) = 1; |
241ecdc7 | 2444 | |
2445 | gfor_fndecl_string_verify = gfc_build_library_function_decl_with_spec ( | |
2446 | get_identifier (PREFIX("string_verify")), "..R.R.", | |
2447 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2448 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
537824d1 | 2449 | DECL_PURE_P (gfor_fndecl_string_verify) = 1; |
241ecdc7 | 2450 | |
2451 | gfor_fndecl_string_trim = gfc_build_library_function_decl_with_spec ( | |
2452 | get_identifier (PREFIX("string_trim")), ".Ww.R", | |
2453 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2454 | build_pointer_type (pchar1_type_node), gfc_charlen_type_node, | |
2455 | pchar1_type_node); | |
2456 | ||
2457 | gfor_fndecl_string_minmax = gfc_build_library_function_decl_with_spec ( | |
2458 | get_identifier (PREFIX("string_minmax")), ".Ww.R", | |
2459 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2460 | build_pointer_type (pchar1_type_node), integer_type_node, | |
2461 | integer_type_node); | |
2462 | ||
2463 | gfor_fndecl_adjustl = gfc_build_library_function_decl_with_spec ( | |
2464 | get_identifier (PREFIX("adjustl")), ".W.R", | |
2465 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2466 | pchar1_type_node); | |
2467 | ||
2468 | gfor_fndecl_adjustr = gfc_build_library_function_decl_with_spec ( | |
2469 | get_identifier (PREFIX("adjustr")), ".W.R", | |
2470 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2471 | pchar1_type_node); | |
2472 | ||
2473 | gfor_fndecl_select_string = gfc_build_library_function_decl_with_spec ( | |
2474 | get_identifier (PREFIX("select_string")), ".R.R.", | |
2475 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2476 | pchar1_type_node, gfc_charlen_type_node); | |
537824d1 | 2477 | DECL_PURE_P (gfor_fndecl_select_string) = 1; |
241ecdc7 | 2478 | |
2479 | gfor_fndecl_compare_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2480 | get_identifier (PREFIX("compare_string_char4")), "..R.R", | |
2481 | integer_type_node, 4, gfc_charlen_type_node, pchar4_type_node, | |
2482 | gfc_charlen_type_node, pchar4_type_node); | |
537824d1 | 2483 | DECL_PURE_P (gfor_fndecl_compare_string_char4) = 1; |
241ecdc7 | 2484 | |
2485 | gfor_fndecl_concat_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2486 | get_identifier (PREFIX("concat_string_char4")), "..W.R.R", | |
2487 | void_type_node, 6, gfc_charlen_type_node, pchar4_type_node, | |
2488 | gfc_charlen_type_node, pchar4_type_node, gfc_charlen_type_node, | |
2489 | pchar4_type_node); | |
2490 | ||
2491 | gfor_fndecl_string_len_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2492 | get_identifier (PREFIX("string_len_trim_char4")), "..R", | |
2493 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar4_type_node); | |
537824d1 | 2494 | DECL_PURE_P (gfor_fndecl_string_len_trim_char4) = 1; |
241ecdc7 | 2495 | |
2496 | gfor_fndecl_string_index_char4 = gfc_build_library_function_decl_with_spec ( | |
2497 | get_identifier (PREFIX("string_index_char4")), "..R.R.", | |
2498 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2499 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2500 | DECL_PURE_P (gfor_fndecl_string_index_char4) = 1; |
241ecdc7 | 2501 | |
2502 | gfor_fndecl_string_scan_char4 = gfc_build_library_function_decl_with_spec ( | |
2503 | get_identifier (PREFIX("string_scan_char4")), "..R.R.", | |
2504 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2505 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2506 | DECL_PURE_P (gfor_fndecl_string_scan_char4) = 1; |
241ecdc7 | 2507 | |
2508 | gfor_fndecl_string_verify_char4 = gfc_build_library_function_decl_with_spec ( | |
2509 | get_identifier (PREFIX("string_verify_char4")), "..R.R.", | |
2510 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2511 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
537824d1 | 2512 | DECL_PURE_P (gfor_fndecl_string_verify_char4) = 1; |
241ecdc7 | 2513 | |
2514 | gfor_fndecl_string_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2515 | get_identifier (PREFIX("string_trim_char4")), ".Ww.R", | |
2516 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2517 | build_pointer_type (pchar4_type_node), gfc_charlen_type_node, | |
2518 | pchar4_type_node); | |
2519 | ||
2520 | gfor_fndecl_string_minmax_char4 = gfc_build_library_function_decl_with_spec ( | |
2521 | get_identifier (PREFIX("string_minmax_char4")), ".Ww.R", | |
2522 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2523 | build_pointer_type (pchar4_type_node), integer_type_node, | |
2524 | integer_type_node); | |
2525 | ||
2526 | gfor_fndecl_adjustl_char4 = gfc_build_library_function_decl_with_spec ( | |
2527 | get_identifier (PREFIX("adjustl_char4")), ".W.R", | |
2528 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2529 | pchar4_type_node); | |
2530 | ||
2531 | gfor_fndecl_adjustr_char4 = gfc_build_library_function_decl_with_spec ( | |
2532 | get_identifier (PREFIX("adjustr_char4")), ".W.R", | |
2533 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2534 | pchar4_type_node); | |
2535 | ||
2536 | gfor_fndecl_select_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2537 | get_identifier (PREFIX("select_string_char4")), ".R.R.", | |
2538 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2539 | pvoid_type_node, gfc_charlen_type_node); | |
537824d1 | 2540 | DECL_PURE_P (gfor_fndecl_select_string_char4) = 1; |
b44437b9 | 2541 | |
2542 | ||
2543 | /* Conversion between character kinds. */ | |
2544 | ||
241ecdc7 | 2545 | gfor_fndecl_convert_char1_to_char4 = gfc_build_library_function_decl_with_spec ( |
2546 | get_identifier (PREFIX("convert_char1_to_char4")), ".w.R", | |
2547 | void_type_node, 3, build_pointer_type (pchar4_type_node), | |
2548 | gfc_charlen_type_node, pchar1_type_node); | |
b44437b9 | 2549 | |
241ecdc7 | 2550 | gfor_fndecl_convert_char4_to_char1 = gfc_build_library_function_decl_with_spec ( |
2551 | get_identifier (PREFIX("convert_char4_to_char1")), ".w.R", | |
2552 | void_type_node, 3, build_pointer_type (pchar1_type_node), | |
2553 | gfc_charlen_type_node, pchar4_type_node); | |
b44437b9 | 2554 | |
40b806de | 2555 | /* Misc. functions. */ |
5fcc6ec2 | 2556 | |
241ecdc7 | 2557 | gfor_fndecl_ttynam = gfc_build_library_function_decl_with_spec ( |
2558 | get_identifier (PREFIX("ttynam")), ".W", | |
2559 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
2560 | integer_type_node); | |
2561 | ||
2562 | gfor_fndecl_fdate = gfc_build_library_function_decl_with_spec ( | |
2563 | get_identifier (PREFIX("fdate")), ".W", | |
2564 | void_type_node, 2, pchar_type_node, gfc_charlen_type_node); | |
2565 | ||
2566 | gfor_fndecl_ctime = gfc_build_library_function_decl_with_spec ( | |
2567 | get_identifier (PREFIX("ctime")), ".W", | |
2568 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
2569 | gfc_int8_type_node); | |
2570 | ||
2571 | gfor_fndecl_sc_kind = gfc_build_library_function_decl_with_spec ( | |
2572 | get_identifier (PREFIX("selected_char_kind")), "..R", | |
2573 | gfc_int4_type_node, 2, gfc_charlen_type_node, pchar_type_node); | |
537824d1 | 2574 | DECL_PURE_P (gfor_fndecl_sc_kind) = 1; |
241ecdc7 | 2575 | |
2576 | gfor_fndecl_si_kind = gfc_build_library_function_decl_with_spec ( | |
2577 | get_identifier (PREFIX("selected_int_kind")), ".R", | |
2578 | gfc_int4_type_node, 1, pvoid_type_node); | |
537824d1 | 2579 | DECL_PURE_P (gfor_fndecl_si_kind) = 1; |
241ecdc7 | 2580 | |
2581 | gfor_fndecl_sr_kind = gfc_build_library_function_decl_with_spec ( | |
2582 | get_identifier (PREFIX("selected_real_kind2008")), ".RR", | |
2583 | gfc_int4_type_node, 3, pvoid_type_node, pvoid_type_node, | |
2584 | pvoid_type_node); | |
537824d1 | 2585 | DECL_PURE_P (gfor_fndecl_sr_kind) = 1; |
4ee9c684 | 2586 | |
4ee9c684 | 2587 | /* Power functions. */ |
76834664 | 2588 | { |
920e54ef | 2589 | tree ctype, rtype, itype, jtype; |
2590 | int rkind, ikind, jkind; | |
2591 | #define NIKINDS 3 | |
2592 | #define NRKINDS 4 | |
2593 | static int ikinds[NIKINDS] = {4, 8, 16}; | |
2594 | static int rkinds[NRKINDS] = {4, 8, 10, 16}; | |
2595 | char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */ | |
2596 | ||
2597 | for (ikind=0; ikind < NIKINDS; ikind++) | |
76834664 | 2598 | { |
920e54ef | 2599 | itype = gfc_get_int_type (ikinds[ikind]); |
2600 | ||
2601 | for (jkind=0; jkind < NIKINDS; jkind++) | |
2602 | { | |
2603 | jtype = gfc_get_int_type (ikinds[jkind]); | |
2604 | if (itype && jtype) | |
2605 | { | |
2606 | sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind], | |
2607 | ikinds[jkind]); | |
2608 | gfor_fndecl_math_powi[jkind][ikind].integer = | |
2609 | gfc_build_library_function_decl (get_identifier (name), | |
2610 | jtype, 2, jtype, itype); | |
2177d98b | 2611 | TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
920e54ef | 2612 | } |
2613 | } | |
2614 | ||
2615 | for (rkind = 0; rkind < NRKINDS; rkind ++) | |
76834664 | 2616 | { |
920e54ef | 2617 | rtype = gfc_get_real_type (rkinds[rkind]); |
2618 | if (rtype && itype) | |
2619 | { | |
2620 | sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind], | |
2621 | ikinds[ikind]); | |
2622 | gfor_fndecl_math_powi[rkind][ikind].real = | |
2623 | gfc_build_library_function_decl (get_identifier (name), | |
2624 | rtype, 2, rtype, itype); | |
2177d98b | 2625 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
920e54ef | 2626 | } |
2627 | ||
2628 | ctype = gfc_get_complex_type (rkinds[rkind]); | |
2629 | if (ctype && itype) | |
2630 | { | |
2631 | sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind], | |
2632 | ikinds[ikind]); | |
2633 | gfor_fndecl_math_powi[rkind][ikind].cmplx = | |
2634 | gfc_build_library_function_decl (get_identifier (name), | |
2635 | ctype, 2,ctype, itype); | |
2177d98b | 2636 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
920e54ef | 2637 | } |
76834664 | 2638 | } |
2639 | } | |
920e54ef | 2640 | #undef NIKINDS |
2641 | #undef NRKINDS | |
76834664 | 2642 | } |
2643 | ||
241ecdc7 | 2644 | gfor_fndecl_math_ishftc4 = gfc_build_library_function_decl ( |
2645 | get_identifier (PREFIX("ishftc4")), | |
2646 | gfc_int4_type_node, 3, gfc_int4_type_node, gfc_int4_type_node, | |
2647 | gfc_int4_type_node); | |
2648 | ||
2649 | gfor_fndecl_math_ishftc8 = gfc_build_library_function_decl ( | |
2650 | get_identifier (PREFIX("ishftc8")), | |
2651 | gfc_int8_type_node, 3, gfc_int8_type_node, gfc_int4_type_node, | |
2652 | gfc_int4_type_node); | |
2653 | ||
920e54ef | 2654 | if (gfc_int16_type_node) |
241ecdc7 | 2655 | gfor_fndecl_math_ishftc16 = gfc_build_library_function_decl ( |
2656 | get_identifier (PREFIX("ishftc16")), | |
2657 | gfc_int16_type_node, 3, gfc_int16_type_node, gfc_int4_type_node, | |
2658 | gfc_int4_type_node); | |
920e54ef | 2659 | |
4e8e57b0 | 2660 | /* BLAS functions. */ |
2661 | { | |
36c921b9 | 2662 | tree pint = build_pointer_type (integer_type_node); |
4e8e57b0 | 2663 | tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind)); |
2664 | tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind)); | |
2665 | tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind)); | |
2666 | tree pz = build_pointer_type | |
2667 | (gfc_get_complex_type (gfc_default_double_kind)); | |
2668 | ||
2669 | gfor_fndecl_sgemm = gfc_build_library_function_decl | |
2670 | (get_identifier | |
2671 | (gfc_option.flag_underscoring ? "sgemm_" | |
2672 | : "sgemm"), | |
2673 | void_type_node, 15, pchar_type_node, | |
2674 | pchar_type_node, pint, pint, pint, ps, ps, pint, | |
36c921b9 | 2675 | ps, pint, ps, ps, pint, integer_type_node, |
2676 | integer_type_node); | |
4e8e57b0 | 2677 | gfor_fndecl_dgemm = gfc_build_library_function_decl |
2678 | (get_identifier | |
2679 | (gfc_option.flag_underscoring ? "dgemm_" | |
2680 | : "dgemm"), | |
2681 | void_type_node, 15, pchar_type_node, | |
2682 | pchar_type_node, pint, pint, pint, pd, pd, pint, | |
36c921b9 | 2683 | pd, pint, pd, pd, pint, integer_type_node, |
2684 | integer_type_node); | |
4e8e57b0 | 2685 | gfor_fndecl_cgemm = gfc_build_library_function_decl |
2686 | (get_identifier | |
2687 | (gfc_option.flag_underscoring ? "cgemm_" | |
2688 | : "cgemm"), | |
2689 | void_type_node, 15, pchar_type_node, | |
2690 | pchar_type_node, pint, pint, pint, pc, pc, pint, | |
36c921b9 | 2691 | pc, pint, pc, pc, pint, integer_type_node, |
2692 | integer_type_node); | |
4e8e57b0 | 2693 | gfor_fndecl_zgemm = gfc_build_library_function_decl |
2694 | (get_identifier | |
2695 | (gfc_option.flag_underscoring ? "zgemm_" | |
2696 | : "zgemm"), | |
2697 | void_type_node, 15, pchar_type_node, | |
2698 | pchar_type_node, pint, pint, pint, pz, pz, pint, | |
36c921b9 | 2699 | pz, pint, pz, pz, pint, integer_type_node, |
2700 | integer_type_node); | |
4e8e57b0 | 2701 | } |
2702 | ||
4ee9c684 | 2703 | /* Other functions. */ |
241ecdc7 | 2704 | gfor_fndecl_size0 = gfc_build_library_function_decl_with_spec ( |
2705 | get_identifier (PREFIX("size0")), ".R", | |
2706 | gfc_array_index_type, 1, pvoid_type_node); | |
537824d1 | 2707 | DECL_PURE_P (gfor_fndecl_size0) = 1; |
241ecdc7 | 2708 | |
2709 | gfor_fndecl_size1 = gfc_build_library_function_decl_with_spec ( | |
2710 | get_identifier (PREFIX("size1")), ".R", | |
2711 | gfc_array_index_type, 2, pvoid_type_node, gfc_array_index_type); | |
537824d1 | 2712 | DECL_PURE_P (gfor_fndecl_size1) = 1; |
241ecdc7 | 2713 | |
2714 | gfor_fndecl_iargc = gfc_build_library_function_decl ( | |
2715 | get_identifier (PREFIX ("iargc")), gfc_int4_type_node, 0); | |
70eb4f1a | 2716 | |
2717 | if (gfc_type_for_size (128, true)) | |
2718 | { | |
2719 | tree uint128 = gfc_type_for_size (128, true); | |
2720 | ||
241ecdc7 | 2721 | gfor_fndecl_clz128 = gfc_build_library_function_decl ( |
2722 | get_identifier (PREFIX ("clz128")), integer_type_node, 1, uint128); | |
537824d1 | 2723 | TREE_READONLY (gfor_fndecl_clz128) = 1; |
70eb4f1a | 2724 | |
241ecdc7 | 2725 | gfor_fndecl_ctz128 = gfc_build_library_function_decl ( |
2726 | get_identifier (PREFIX ("ctz128")), integer_type_node, 1, uint128); | |
537824d1 | 2727 | TREE_READONLY (gfor_fndecl_ctz128) = 1; |
70eb4f1a | 2728 | } |
4ee9c684 | 2729 | } |
2730 | ||
2731 | ||
2732 | /* Make prototypes for runtime library functions. */ | |
2733 | ||
2734 | void | |
2735 | gfc_build_builtin_function_decls (void) | |
2736 | { | |
90ba9145 | 2737 | tree gfc_int4_type_node = gfc_get_int_type (4); |
4ee9c684 | 2738 | |
241ecdc7 | 2739 | gfor_fndecl_stop_numeric = gfc_build_library_function_decl ( |
2740 | get_identifier (PREFIX("stop_numeric")), | |
2741 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 2742 | /* STOP doesn't return. */ |
98ccec97 | 2743 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1; |
2744 | ||
241ecdc7 | 2745 | gfor_fndecl_stop_string = gfc_build_library_function_decl_with_spec ( |
2746 | get_identifier (PREFIX("stop_string")), ".R.", | |
2747 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
070cc790 | 2748 | /* STOP doesn't return. */ |
241ecdc7 | 2749 | TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1; |
537824d1 | 2750 | |
241ecdc7 | 2751 | gfor_fndecl_error_stop_numeric = gfc_build_library_function_decl ( |
2752 | get_identifier (PREFIX("error_stop_numeric")), | |
2753 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 2754 | /* ERROR STOP doesn't return. */ |
2755 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_numeric) = 1; | |
2756 | ||
241ecdc7 | 2757 | gfor_fndecl_error_stop_string = gfc_build_library_function_decl_with_spec ( |
2758 | get_identifier (PREFIX("error_stop_string")), ".R.", | |
2759 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
c6cd3066 | 2760 | /* ERROR STOP doesn't return. */ |
2761 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_string) = 1; | |
2762 | ||
241ecdc7 | 2763 | gfor_fndecl_pause_numeric = gfc_build_library_function_decl ( |
2764 | get_identifier (PREFIX("pause_numeric")), | |
2765 | void_type_node, 1, gfc_int4_type_node); | |
070cc790 | 2766 | |
241ecdc7 | 2767 | gfor_fndecl_pause_string = gfc_build_library_function_decl_with_spec ( |
2768 | get_identifier (PREFIX("pause_string")), ".R.", | |
2769 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
4ee9c684 | 2770 | |
241ecdc7 | 2771 | gfor_fndecl_runtime_error = gfc_build_library_function_decl_with_spec ( |
2772 | get_identifier (PREFIX("runtime_error")), ".R", | |
2773 | void_type_node, -1, pchar_type_node); | |
9c0f3811 | 2774 | /* The runtime_error function does not return. */ |
2775 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1; | |
4ee9c684 | 2776 | |
241ecdc7 | 2777 | gfor_fndecl_runtime_error_at = gfc_build_library_function_decl_with_spec ( |
2778 | get_identifier (PREFIX("runtime_error_at")), ".RR", | |
2779 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
50ad5fa2 | 2780 | /* The runtime_error_at function does not return. */ |
2781 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1; | |
2782 | ||
241ecdc7 | 2783 | gfor_fndecl_runtime_warning_at = gfc_build_library_function_decl_with_spec ( |
2784 | get_identifier (PREFIX("runtime_warning_at")), ".RR", | |
2785 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
2786 | ||
2787 | gfor_fndecl_generate_error = gfc_build_library_function_decl_with_spec ( | |
2788 | get_identifier (PREFIX("generate_error")), ".R.R", | |
2789 | void_type_node, 3, pvoid_type_node, integer_type_node, | |
2790 | pchar_type_node); | |
2791 | ||
2792 | gfor_fndecl_os_error = gfc_build_library_function_decl_with_spec ( | |
2793 | get_identifier (PREFIX("os_error")), ".R", | |
2794 | void_type_node, 1, pchar_type_node); | |
9915365e | 2795 | /* The runtime_error function does not return. */ |
2796 | TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1; | |
2797 | ||
241ecdc7 | 2798 | gfor_fndecl_set_args = gfc_build_library_function_decl ( |
2799 | get_identifier (PREFIX("set_args")), | |
2800 | void_type_node, 2, integer_type_node, | |
2801 | build_pointer_type (pchar_type_node)); | |
7257a5d2 | 2802 | |
241ecdc7 | 2803 | gfor_fndecl_set_fpe = gfc_build_library_function_decl ( |
2804 | get_identifier (PREFIX("set_fpe")), | |
2805 | void_type_node, 1, integer_type_node); | |
8c84a5de | 2806 | |
56c7c2d7 | 2807 | /* Keep the array dimension in sync with the call, later in this file. */ |
241ecdc7 | 2808 | gfor_fndecl_set_options = gfc_build_library_function_decl_with_spec ( |
2809 | get_identifier (PREFIX("set_options")), "..R", | |
2810 | void_type_node, 2, integer_type_node, | |
2811 | build_pointer_type (integer_type_node)); | |
64fc3c4c | 2812 | |
241ecdc7 | 2813 | gfor_fndecl_set_convert = gfc_build_library_function_decl ( |
2814 | get_identifier (PREFIX("set_convert")), | |
2815 | void_type_node, 1, integer_type_node); | |
15774a8b | 2816 | |
241ecdc7 | 2817 | gfor_fndecl_set_record_marker = gfc_build_library_function_decl ( |
2818 | get_identifier (PREFIX("set_record_marker")), | |
2819 | void_type_node, 1, integer_type_node); | |
f23886ab | 2820 | |
241ecdc7 | 2821 | gfor_fndecl_set_max_subrecord_length = gfc_build_library_function_decl ( |
2822 | get_identifier (PREFIX("set_max_subrecord_length")), | |
2823 | void_type_node, 1, integer_type_node); | |
bbaaa7b1 | 2824 | |
8ce86007 | 2825 | gfor_fndecl_in_pack = gfc_build_library_function_decl_with_spec ( |
241ecdc7 | 2826 | get_identifier (PREFIX("internal_pack")), ".r", |
2827 | pvoid_type_node, 1, pvoid_type_node); | |
4ee9c684 | 2828 | |
8ce86007 | 2829 | gfor_fndecl_in_unpack = gfc_build_library_function_decl_with_spec ( |
241ecdc7 | 2830 | get_identifier (PREFIX("internal_unpack")), ".wR", |
2831 | void_type_node, 2, pvoid_type_node, pvoid_type_node); | |
2832 | ||
2833 | gfor_fndecl_associated = gfc_build_library_function_decl_with_spec ( | |
2834 | get_identifier (PREFIX("associated")), ".RR", | |
2835 | integer_type_node, 2, ppvoid_type_node, ppvoid_type_node); | |
537824d1 | 2836 | DECL_PURE_P (gfor_fndecl_associated) = 1; |
4ee9c684 | 2837 | |
2838 | gfc_build_intrinsic_function_decls (); | |
2839 | gfc_build_intrinsic_lib_fndecls (); | |
2840 | gfc_build_io_library_fndecls (); | |
2841 | } | |
2842 | ||
2843 | ||
231e961a | 2844 | /* Evaluate the length of dummy character variables. */ |
4ee9c684 | 2845 | |
c5faa799 | 2846 | static void |
2847 | gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, | |
2848 | gfc_wrapped_block *block) | |
4ee9c684 | 2849 | { |
c5faa799 | 2850 | stmtblock_t init; |
4ee9c684 | 2851 | |
b9c7fce7 | 2852 | gfc_finish_decl (cl->backend_decl); |
4ee9c684 | 2853 | |
c5faa799 | 2854 | gfc_start_block (&init); |
4ee9c684 | 2855 | |
2856 | /* Evaluate the string length expression. */ | |
c5faa799 | 2857 | gfc_conv_string_length (cl, NULL, &init); |
d4163395 | 2858 | |
c5faa799 | 2859 | gfc_trans_vla_type_sizes (sym, &init); |
d4163395 | 2860 | |
c5faa799 | 2861 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
4ee9c684 | 2862 | } |
2863 | ||
2864 | ||
2865 | /* Allocate and cleanup an automatic character variable. */ | |
2866 | ||
c5faa799 | 2867 | static void |
2868 | gfc_trans_auto_character_variable (gfc_symbol * sym, gfc_wrapped_block * block) | |
4ee9c684 | 2869 | { |
c5faa799 | 2870 | stmtblock_t init; |
4ee9c684 | 2871 | tree decl; |
4ee9c684 | 2872 | tree tmp; |
2873 | ||
22d678e8 | 2874 | gcc_assert (sym->backend_decl); |
eeebe20b | 2875 | gcc_assert (sym->ts.u.cl && sym->ts.u.cl->length); |
4ee9c684 | 2876 | |
c5faa799 | 2877 | gfc_start_block (&init); |
4ee9c684 | 2878 | |
2879 | /* Evaluate the string length expression. */ | |
c5faa799 | 2880 | gfc_conv_string_length (sym->ts.u.cl, NULL, &init); |
4ee9c684 | 2881 | |
c5faa799 | 2882 | gfc_trans_vla_type_sizes (sym, &init); |
d4163395 | 2883 | |
4ee9c684 | 2884 | decl = sym->backend_decl; |
2885 | ||
afcf285e | 2886 | /* Emit a DECL_EXPR for this variable, which will cause the |
4b3a701c | 2887 | gimplifier to allocate storage, and all that good stuff. */ |
f75d6b8a | 2888 | tmp = fold_build1 (DECL_EXPR, TREE_TYPE (decl), decl); |
c5faa799 | 2889 | gfc_add_expr_to_block (&init, tmp); |
afcf285e | 2890 | |
c5faa799 | 2891 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
4ee9c684 | 2892 | } |
2893 | ||
c8f1568f | 2894 | /* Set the initial value of ASSIGN statement auxiliary variable explicitly. */ |
2895 | ||
c5faa799 | 2896 | static void |
2897 | gfc_trans_assign_aux_var (gfc_symbol * sym, gfc_wrapped_block * block) | |
c8f1568f | 2898 | { |
c5faa799 | 2899 | stmtblock_t init; |
c8f1568f | 2900 | |
2901 | gcc_assert (sym->backend_decl); | |
c5faa799 | 2902 | gfc_start_block (&init); |
c8f1568f | 2903 | |
2904 | /* Set the initial value to length. See the comments in | |
2905 | function gfc_add_assign_aux_vars in this file. */ | |
c5faa799 | 2906 | gfc_add_modify (&init, GFC_DECL_STRING_LEN (sym->backend_decl), |
2907 | build_int_cst (NULL_TREE, -2)); | |
c8f1568f | 2908 | |
c5faa799 | 2909 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
c8f1568f | 2910 | } |
2911 | ||
d4163395 | 2912 | static void |
2913 | gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body) | |
2914 | { | |
2915 | tree t = *tp, var, val; | |
2916 | ||
2917 | if (t == NULL || t == error_mark_node) | |
2918 | return; | |
2919 | if (TREE_CONSTANT (t) || DECL_P (t)) | |
2920 | return; | |
2921 | ||
2922 | if (TREE_CODE (t) == SAVE_EXPR) | |
2923 | { | |
2924 | if (SAVE_EXPR_RESOLVED_P (t)) | |
2925 | { | |
2926 | *tp = TREE_OPERAND (t, 0); | |
2927 | return; | |
2928 | } | |
2929 | val = TREE_OPERAND (t, 0); | |
2930 | } | |
2931 | else | |
2932 | val = t; | |
2933 | ||
2934 | var = gfc_create_var_np (TREE_TYPE (t), NULL); | |
2935 | gfc_add_decl_to_function (var); | |
75a70cf9 | 2936 | gfc_add_modify (body, var, val); |
d4163395 | 2937 | if (TREE_CODE (t) == SAVE_EXPR) |
2938 | TREE_OPERAND (t, 0) = var; | |
2939 | *tp = var; | |
2940 | } | |
2941 | ||
2942 | static void | |
2943 | gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body) | |
2944 | { | |
2945 | tree t; | |
2946 | ||
2947 | if (type == NULL || type == error_mark_node) | |
2948 | return; | |
2949 | ||
2950 | type = TYPE_MAIN_VARIANT (type); | |
2951 | ||
2952 | if (TREE_CODE (type) == INTEGER_TYPE) | |
2953 | { | |
2954 | gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body); | |
2955 | gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body); | |
2956 | ||
2957 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
2958 | { | |
2959 | TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type); | |
2960 | TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type); | |
2961 | } | |
2962 | } | |
2963 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
2964 | { | |
2965 | gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body); | |
2966 | gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body); | |
2967 | gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body); | |
2968 | gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body); | |
2969 | ||
2970 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
2971 | { | |
2972 | TYPE_SIZE (t) = TYPE_SIZE (type); | |
2973 | TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type); | |
2974 | } | |
2975 | } | |
2976 | } | |
2977 | ||
2978 | /* Make sure all type sizes and array domains are either constant, | |
2979 | or variable or parameter decls. This is a simplified variant | |
2980 | of gimplify_type_sizes, but we can't use it here, as none of the | |
2981 | variables in the expressions have been gimplified yet. | |
2982 | As type sizes and domains for various variable length arrays | |
2983 | contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars | |
2984 | time, without this routine gimplify_type_sizes in the middle-end | |
2985 | could result in the type sizes being gimplified earlier than where | |
2986 | those variables are initialized. */ | |
2987 | ||
2988 | void | |
2989 | gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body) | |
2990 | { | |
2991 | tree type = TREE_TYPE (sym->backend_decl); | |
2992 | ||
2993 | if (TREE_CODE (type) == FUNCTION_TYPE | |
2994 | && (sym->attr.function || sym->attr.result || sym->attr.entry)) | |
2995 | { | |
2996 | if (! current_fake_result_decl) | |
2997 | return; | |
2998 | ||
2999 | type = TREE_TYPE (TREE_VALUE (current_fake_result_decl)); | |
3000 | } | |
3001 | ||
3002 | while (POINTER_TYPE_P (type)) | |
3003 | type = TREE_TYPE (type); | |
3004 | ||
3005 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
3006 | { | |
3007 | tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type); | |
3008 | ||
3009 | while (POINTER_TYPE_P (etype)) | |
3010 | etype = TREE_TYPE (etype); | |
3011 | ||
3012 | gfc_trans_vla_type_sizes_1 (etype, body); | |
3013 | } | |
3014 | ||
3015 | gfc_trans_vla_type_sizes_1 (type, body); | |
3016 | } | |
3017 | ||
4ee9c684 | 3018 | |
f0d4969f | 3019 | /* Initialize a derived type by building an lvalue from the symbol |
a545a8f8 | 3020 | and using trans_assignment to do the work. Set dealloc to false |
3021 | if no deallocation prior the assignment is needed. */ | |
c5faa799 | 3022 | void |
3023 | gfc_init_default_dt (gfc_symbol * sym, stmtblock_t * block, bool dealloc) | |
87114d2e | 3024 | { |
f0d4969f | 3025 | gfc_expr *e; |
87114d2e | 3026 | tree tmp; |
3027 | tree present; | |
3028 | ||
c5faa799 | 3029 | gcc_assert (block); |
3030 | ||
f0d4969f | 3031 | gcc_assert (!sym->attr.allocatable); |
3032 | gfc_set_sym_referenced (sym); | |
3033 | e = gfc_lval_expr_from_sym (sym); | |
a545a8f8 | 3034 | tmp = gfc_trans_assignment (e, sym->value, false, dealloc); |
c38054a8 | 3035 | if (sym->attr.dummy && (sym->attr.optional |
3036 | || sym->ns->proc_name->attr.entry_master)) | |
87114d2e | 3037 | { |
f0d4969f | 3038 | present = gfc_conv_expr_present (sym); |
3039 | tmp = build3 (COND_EXPR, TREE_TYPE (tmp), present, | |
e60a6f7b | 3040 | tmp, build_empty_stmt (input_location)); |
87114d2e | 3041 | } |
c5faa799 | 3042 | gfc_add_expr_to_block (block, tmp); |
f0d4969f | 3043 | gfc_free_expr (e); |
87114d2e | 3044 | } |
3045 | ||
3046 | ||
8714fc76 | 3047 | /* Initialize INTENT(OUT) derived type dummies. As well as giving |
3048 | them their default initializer, if they do not have allocatable | |
3049 | components, they have their allocatable components deallocated. */ | |
3050 | ||
c5faa799 | 3051 | static void |
3052 | init_intent_out_dt (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
f0d4969f | 3053 | { |
c5faa799 | 3054 | stmtblock_t init; |
f0d4969f | 3055 | gfc_formal_arglist *f; |
8714fc76 | 3056 | tree tmp; |
5907c3ea | 3057 | tree present; |
f0d4969f | 3058 | |
c5faa799 | 3059 | gfc_init_block (&init); |
f0d4969f | 3060 | for (f = proc_sym->formal; f; f = f->next) |
3061 | if (f->sym && f->sym->attr.intent == INTENT_OUT | |
c49db15e | 3062 | && !f->sym->attr.pointer |
3063 | && f->sym->ts.type == BT_DERIVED) | |
8714fc76 | 3064 | { |
c38054a8 | 3065 | if (f->sym->ts.u.derived->attr.alloc_comp && !f->sym->value) |
8714fc76 | 3066 | { |
eeebe20b | 3067 | tmp = gfc_deallocate_alloc_comp (f->sym->ts.u.derived, |
8714fc76 | 3068 | f->sym->backend_decl, |
3069 | f->sym->as ? f->sym->as->rank : 0); | |
5907c3ea | 3070 | |
c38054a8 | 3071 | if (f->sym->attr.optional |
3072 | || f->sym->ns->proc_name->attr.entry_master) | |
3073 | { | |
3074 | present = gfc_conv_expr_present (f->sym); | |
3075 | tmp = build3 (COND_EXPR, TREE_TYPE (tmp), present, | |
3076 | tmp, build_empty_stmt (input_location)); | |
3077 | } | |
5907c3ea | 3078 | |
c5faa799 | 3079 | gfc_add_expr_to_block (&init, tmp); |
8714fc76 | 3080 | } |
c38054a8 | 3081 | else if (f->sym->value) |
c5faa799 | 3082 | gfc_init_default_dt (f->sym, &init, true); |
8714fc76 | 3083 | } |
f0d4969f | 3084 | |
c5faa799 | 3085 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
f0d4969f | 3086 | } |
3087 | ||
87114d2e | 3088 | |
4ee9c684 | 3089 | /* Generate function entry and exit code, and add it to the function body. |
3090 | This includes: | |
f888a3fb | 3091 | Allocation and initialization of array variables. |
4ee9c684 | 3092 | Allocation of character string variables. |
c8f1568f | 3093 | Initialization and possibly repacking of dummy arrays. |
0a96a7cc | 3094 | Initialization of ASSIGN statement auxiliary variable. |
3095 | Automatic deallocation. */ | |
4ee9c684 | 3096 | |
89ac8ba1 | 3097 | void |
3098 | gfc_trans_deferred_vars (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
4ee9c684 | 3099 | { |
3100 | locus loc; | |
3101 | gfc_symbol *sym; | |
d4163395 | 3102 | gfc_formal_arglist *f; |
c5faa799 | 3103 | stmtblock_t tmpblock; |
25dd7350 | 3104 | bool seen_trans_deferred_array = false; |
4ee9c684 | 3105 | |
3106 | /* Deal with implicit return variables. Explicit return variables will | |
3107 | already have been added. */ | |
3108 | if (gfc_return_by_reference (proc_sym) && proc_sym->result == proc_sym) | |
3109 | { | |
3110 | if (!current_fake_result_decl) | |
3111 | { | |
c6871095 | 3112 | gfc_entry_list *el = NULL; |
3113 | if (proc_sym->attr.entry_master) | |
3114 | { | |
3115 | for (el = proc_sym->ns->entries; el; el = el->next) | |
3116 | if (el->sym != el->sym->result) | |
3117 | break; | |
3118 | } | |
fa7b6574 | 3119 | /* TODO: move to the appropriate place in resolve.c. */ |
3120 | if (warn_return_type && el == NULL) | |
3121 | gfc_warning ("Return value of function '%s' at %L not set", | |
3122 | proc_sym->name, &proc_sym->declared_at); | |
4ee9c684 | 3123 | } |
c6871095 | 3124 | else if (proc_sym->as) |
4ee9c684 | 3125 | { |
d4163395 | 3126 | tree result = TREE_VALUE (current_fake_result_decl); |
89ac8ba1 | 3127 | gfc_trans_dummy_array_bias (proc_sym, result, block); |
10b07432 | 3128 | |
3129 | /* An automatic character length, pointer array result. */ | |
3130 | if (proc_sym->ts.type == BT_CHARACTER | |
eeebe20b | 3131 | && TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) |
89ac8ba1 | 3132 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
4ee9c684 | 3133 | } |
3134 | else if (proc_sym->ts.type == BT_CHARACTER) | |
3135 | { | |
eeebe20b | 3136 | if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) |
89ac8ba1 | 3137 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
4ee9c684 | 3138 | } |
3139 | else | |
bdaed7d2 | 3140 | gcc_assert (gfc_option.flag_f2c |
3141 | && proc_sym->ts.type == BT_COMPLEX); | |
4ee9c684 | 3142 | } |
3143 | ||
87114d2e | 3144 | /* Initialize the INTENT(OUT) derived type dummy arguments. This |
3145 | should be done here so that the offsets and lbounds of arrays | |
3146 | are available. */ | |
89ac8ba1 | 3147 | init_intent_out_dt (proc_sym, block); |
87114d2e | 3148 | |
4ee9c684 | 3149 | for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink) |
3150 | { | |
2294b616 | 3151 | bool sym_has_alloc_comp = (sym->ts.type == BT_DERIVED) |
eeebe20b | 3152 | && sym->ts.u.derived->attr.alloc_comp; |
4ee9c684 | 3153 | if (sym->attr.dimension) |
3154 | { | |
3155 | switch (sym->as->type) | |
3156 | { | |
3157 | case AS_EXPLICIT: | |
3158 | if (sym->attr.dummy || sym->attr.result) | |
89ac8ba1 | 3159 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
4ee9c684 | 3160 | else if (sym->attr.pointer || sym->attr.allocatable) |
3161 | { | |
3162 | if (TREE_STATIC (sym->backend_decl)) | |
3163 | gfc_trans_static_array_pointer (sym); | |
3164 | else | |
25dd7350 | 3165 | { |
3166 | seen_trans_deferred_array = true; | |
89ac8ba1 | 3167 | gfc_trans_deferred_array (sym, block); |
25dd7350 | 3168 | } |
4ee9c684 | 3169 | } |
3170 | else | |
3171 | { | |
25dd7350 | 3172 | if (sym_has_alloc_comp) |
3173 | { | |
3174 | seen_trans_deferred_array = true; | |
89ac8ba1 | 3175 | gfc_trans_deferred_array (sym, block); |
25dd7350 | 3176 | } |
f0d4969f | 3177 | else if (sym->ts.type == BT_DERIVED |
3178 | && sym->value | |
3179 | && !sym->attr.data | |
3180 | && sym->attr.save == SAVE_NONE) | |
c5faa799 | 3181 | { |
3182 | gfc_start_block (&tmpblock); | |
3183 | gfc_init_default_dt (sym, &tmpblock, false); | |
89ac8ba1 | 3184 | gfc_add_init_cleanup (block, |
c5faa799 | 3185 | gfc_finish_block (&tmpblock), |
3186 | NULL_TREE); | |
3187 | } | |
25dd7350 | 3188 | |
4ee9c684 | 3189 | gfc_get_backend_locus (&loc); |
3190 | gfc_set_backend_locus (&sym->declared_at); | |
c5faa799 | 3191 | gfc_trans_auto_array_allocation (sym->backend_decl, |
89ac8ba1 | 3192 | sym, block); |
4ee9c684 | 3193 | gfc_set_backend_locus (&loc); |
3194 | } | |
3195 | break; | |
3196 | ||
3197 | case AS_ASSUMED_SIZE: | |
3198 | /* Must be a dummy parameter. */ | |
452695a8 | 3199 | gcc_assert (sym->attr.dummy || sym->as->cp_was_assumed); |
4ee9c684 | 3200 | |
3201 | /* We should always pass assumed size arrays the g77 way. */ | |
452695a8 | 3202 | if (sym->attr.dummy) |
89ac8ba1 | 3203 | gfc_trans_g77_array (sym, block); |
c5faa799 | 3204 | break; |
4ee9c684 | 3205 | |
3206 | case AS_ASSUMED_SHAPE: | |
3207 | /* Must be a dummy parameter. */ | |
22d678e8 | 3208 | gcc_assert (sym->attr.dummy); |
4ee9c684 | 3209 | |
89ac8ba1 | 3210 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
4ee9c684 | 3211 | break; |
3212 | ||
3213 | case AS_DEFERRED: | |
25dd7350 | 3214 | seen_trans_deferred_array = true; |
89ac8ba1 | 3215 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 3216 | break; |
3217 | ||
3218 | default: | |
22d678e8 | 3219 | gcc_unreachable (); |
4ee9c684 | 3220 | } |
25dd7350 | 3221 | if (sym_has_alloc_comp && !seen_trans_deferred_array) |
89ac8ba1 | 3222 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 3223 | } |
0a96a7cc | 3224 | else if (sym->attr.allocatable |
3225 | || (sym->ts.type == BT_CLASS | |
50b4b37b | 3226 | && CLASS_DATA (sym)->attr.allocatable)) |
0a96a7cc | 3227 | { |
908e9973 | 3228 | if (!sym->attr.save) |
3229 | { | |
3230 | /* Nullify and automatic deallocation of allocatable | |
3231 | scalars. */ | |
3232 | tree tmp; | |
3233 | gfc_expr *e; | |
3234 | gfc_se se; | |
c5faa799 | 3235 | stmtblock_t init; |
908e9973 | 3236 | |
3237 | e = gfc_lval_expr_from_sym (sym); | |
3238 | if (sym->ts.type == BT_CLASS) | |
3239 | gfc_add_component_ref (e, "$data"); | |
3240 | ||
3241 | gfc_init_se (&se, NULL); | |
3242 | se.want_pointer = 1; | |
3243 | gfc_conv_expr (&se, e); | |
3244 | gfc_free_expr (e); | |
3245 | ||
3246 | /* Nullify when entering the scope. */ | |
c5faa799 | 3247 | gfc_start_block (&init); |
3248 | gfc_add_modify (&init, se.expr, | |
908e9973 | 3249 | fold_convert (TREE_TYPE (se.expr), |
3250 | null_pointer_node)); | |
908e9973 | 3251 | |
3252 | /* Deallocate when leaving the scope. Nullifying is not | |
3253 | needed. */ | |
abca3541 | 3254 | tmp = NULL; |
3255 | if (!sym->attr.result) | |
3256 | tmp = gfc_deallocate_with_status (se.expr, NULL_TREE, | |
3257 | true, NULL); | |
89ac8ba1 | 3258 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); |
908e9973 | 3259 | } |
0a96a7cc | 3260 | } |
fabc1fc9 | 3261 | else if (sym_has_alloc_comp) |
89ac8ba1 | 3262 | gfc_trans_deferred_array (sym, block); |
4ee9c684 | 3263 | else if (sym->ts.type == BT_CHARACTER) |
3264 | { | |
3265 | gfc_get_backend_locus (&loc); | |
3266 | gfc_set_backend_locus (&sym->declared_at); | |
3267 | if (sym->attr.dummy || sym->attr.result) | |
89ac8ba1 | 3268 | gfc_trans_dummy_character (sym, sym->ts.u.cl, block); |
4ee9c684 | 3269 | else |
89ac8ba1 | 3270 | gfc_trans_auto_character_variable (sym, block); |
4ee9c684 | 3271 | gfc_set_backend_locus (&loc); |
3272 | } | |
c8f1568f | 3273 | else if (sym->attr.assign) |
3274 | { | |
3275 | gfc_get_backend_locus (&loc); | |
3276 | gfc_set_backend_locus (&sym->declared_at); | |
89ac8ba1 | 3277 | gfc_trans_assign_aux_var (sym, block); |
c8f1568f | 3278 | gfc_set_backend_locus (&loc); |
3279 | } | |
f0d4969f | 3280 | else if (sym->ts.type == BT_DERIVED |
3281 | && sym->value | |
3282 | && !sym->attr.data | |
3283 | && sym->attr.save == SAVE_NONE) | |
c5faa799 | 3284 | { |
3285 | gfc_start_block (&tmpblock); | |
3286 | gfc_init_default_dt (sym, &tmpblock, false); | |
89ac8ba1 | 3287 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), |
c5faa799 | 3288 | NULL_TREE); |
3289 | } | |
4ee9c684 | 3290 | else |
22d678e8 | 3291 | gcc_unreachable (); |
4ee9c684 | 3292 | } |
3293 | ||
c5faa799 | 3294 | gfc_init_block (&tmpblock); |
d4163395 | 3295 | |
3296 | for (f = proc_sym->formal; f; f = f->next) | |
1e853e89 | 3297 | { |
3298 | if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER) | |
3299 | { | |
eeebe20b | 3300 | gcc_assert (f->sym->ts.u.cl->backend_decl != NULL); |
3301 | if (TREE_CODE (f->sym->ts.u.cl->backend_decl) == PARM_DECL) | |
c5faa799 | 3302 | gfc_trans_vla_type_sizes (f->sym, &tmpblock); |
1e853e89 | 3303 | } |
1e853e89 | 3304 | } |
d4163395 | 3305 | |
3306 | if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER | |
3307 | && current_fake_result_decl != NULL) | |
3308 | { | |
eeebe20b | 3309 | gcc_assert (proc_sym->ts.u.cl->backend_decl != NULL); |
3310 | if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == PARM_DECL) | |
c5faa799 | 3311 | gfc_trans_vla_type_sizes (proc_sym, &tmpblock); |
d4163395 | 3312 | } |
3313 | ||
89ac8ba1 | 3314 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), NULL_TREE); |
4ee9c684 | 3315 | } |
3316 | ||
df4d540f | 3317 | static GTY ((param_is (struct module_htab_entry))) htab_t module_htab; |
3318 | ||
3319 | /* Hash and equality functions for module_htab. */ | |
3320 | ||
3321 | static hashval_t | |
3322 | module_htab_do_hash (const void *x) | |
3323 | { | |
3324 | return htab_hash_string (((const struct module_htab_entry *)x)->name); | |
3325 | } | |
3326 | ||
3327 | static int | |
3328 | module_htab_eq (const void *x1, const void *x2) | |
3329 | { | |
3330 | return strcmp ((((const struct module_htab_entry *)x1)->name), | |
3331 | (const char *)x2) == 0; | |
3332 | } | |
3333 | ||
3334 | /* Hash and equality functions for module_htab's decls. */ | |
3335 | ||
3336 | static hashval_t | |
3337 | module_htab_decls_hash (const void *x) | |
3338 | { | |
3339 | const_tree t = (const_tree) x; | |
3340 | const_tree n = DECL_NAME (t); | |
3341 | if (n == NULL_TREE) | |
3342 | n = TYPE_NAME (TREE_TYPE (t)); | |
8f1e8e0e | 3343 | return htab_hash_string (IDENTIFIER_POINTER (n)); |
df4d540f | 3344 | } |
3345 | ||
3346 | static int | |
3347 | module_htab_decls_eq (const void *x1, const void *x2) | |
3348 | { | |
3349 | const_tree t1 = (const_tree) x1; | |
3350 | const_tree n1 = DECL_NAME (t1); | |
3351 | if (n1 == NULL_TREE) | |
3352 | n1 = TYPE_NAME (TREE_TYPE (t1)); | |
3353 | return strcmp (IDENTIFIER_POINTER (n1), (const char *) x2) == 0; | |
3354 | } | |
3355 | ||
3356 | struct module_htab_entry * | |
3357 | gfc_find_module (const char *name) | |
3358 | { | |
3359 | void **slot; | |
3360 | ||
3361 | if (! module_htab) | |
3362 | module_htab = htab_create_ggc (10, module_htab_do_hash, | |
3363 | module_htab_eq, NULL); | |
3364 | ||
3365 | slot = htab_find_slot_with_hash (module_htab, name, | |
3366 | htab_hash_string (name), INSERT); | |
3367 | if (*slot == NULL) | |
3368 | { | |
ba72912a | 3369 | struct module_htab_entry *entry = ggc_alloc_cleared_module_htab_entry (); |
df4d540f | 3370 | |
3371 | entry->name = gfc_get_string (name); | |
3372 | entry->decls = htab_create_ggc (10, module_htab_decls_hash, | |
3373 | module_htab_decls_eq, NULL); | |
3374 | *slot = (void *) entry; | |
3375 | } | |
3376 | return (struct module_htab_entry *) *slot; | |
3377 | } | |
3378 | ||
3379 | void | |
3380 | gfc_module_add_decl (struct module_htab_entry *entry, tree decl) | |
3381 | { | |
3382 | void **slot; | |
3383 | const char *name; | |
3384 | ||
3385 | if (DECL_NAME (decl)) | |
3386 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
3387 | else | |
3388 | { | |
3389 | gcc_assert (TREE_CODE (decl) == TYPE_DECL); | |
3390 | name = IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))); | |
3391 | } | |
3392 | slot = htab_find_slot_with_hash (entry->decls, name, | |
3393 | htab_hash_string (name), INSERT); | |
3394 | if (*slot == NULL) | |
3395 | *slot = (void *) decl; | |
3396 | } | |
3397 | ||
3398 | static struct module_htab_entry *cur_module; | |
4ee9c684 | 3399 | |
3400 | /* Output an initialized decl for a module variable. */ | |
3401 | ||
3402 | static void | |
3403 | gfc_create_module_variable (gfc_symbol * sym) | |
3404 | { | |
3405 | tree decl; | |
4ee9c684 | 3406 | |
d77f260f | 3407 | /* Module functions with alternate entries are dealt with later and |
3408 | would get caught by the next condition. */ | |
3409 | if (sym->attr.entry) | |
3410 | return; | |
3411 | ||
c5d33754 | 3412 | /* Make sure we convert the types of the derived types from iso_c_binding |
3413 | into (void *). */ | |
3414 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
3415 | && sym->ts.type == BT_DERIVED) | |
3416 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
3417 | ||
df4d540f | 3418 | if (sym->attr.flavor == FL_DERIVED |
3419 | && sym->backend_decl | |
3420 | && TREE_CODE (sym->backend_decl) == RECORD_TYPE) | |
3421 | { | |
3422 | decl = sym->backend_decl; | |
3423 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
9f1470cb | 3424 | |
3425 | /* -fwhole-file mixes up the contexts so these asserts are unnecessary. */ | |
3426 | if (!(gfc_option.flag_whole_file && sym->attr.use_assoc)) | |
3427 | { | |
3428 | gcc_assert (TYPE_CONTEXT (decl) == NULL_TREE | |
3429 | || TYPE_CONTEXT (decl) == sym->ns->proc_name->backend_decl); | |
3430 | gcc_assert (DECL_CONTEXT (TYPE_STUB_DECL (decl)) == NULL_TREE | |
3431 | || DECL_CONTEXT (TYPE_STUB_DECL (decl)) | |
3432 | == sym->ns->proc_name->backend_decl); | |
3433 | } | |
df4d540f | 3434 | TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl; |
3435 | DECL_CONTEXT (TYPE_STUB_DECL (decl)) = sym->ns->proc_name->backend_decl; | |
3436 | gfc_module_add_decl (cur_module, TYPE_STUB_DECL (decl)); | |
3437 | } | |
3438 | ||
cf269acc | 3439 | /* Only output variables, procedure pointers and array valued, |
3440 | or derived type, parameters. */ | |
4ee9c684 | 3441 | if (sym->attr.flavor != FL_VARIABLE |
be0f1581 | 3442 | && !(sym->attr.flavor == FL_PARAMETER |
cf269acc | 3443 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) |
3444 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.proc_pointer)) | |
4ee9c684 | 3445 | return; |
3446 | ||
df4d540f | 3447 | if ((sym->attr.in_common || sym->attr.in_equivalence) && sym->backend_decl) |
3448 | { | |
3449 | decl = sym->backend_decl; | |
3450 | gcc_assert (DECL_CONTEXT (decl) == NULL_TREE); | |
3451 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
3452 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
3453 | gfc_module_add_decl (cur_module, decl); | |
3454 | } | |
3455 | ||
d43a7f7f | 3456 | /* Don't generate variables from other modules. Variables from |
3457 | COMMONs will already have been generated. */ | |
3458 | if (sym->attr.use_assoc || sym->attr.in_common) | |
4ee9c684 | 3459 | return; |
3460 | ||
2b685f8e | 3461 | /* Equivalenced variables arrive here after creation. */ |
976d903a | 3462 | if (sym->backend_decl |
df4d540f | 3463 | && (sym->equiv_built || sym->attr.in_equivalence)) |
3464 | return; | |
2b685f8e | 3465 | |
bdfbc762 | 3466 | if (sym->backend_decl && !sym->attr.vtab) |
4ee9c684 | 3467 | internal_error ("backend decl for module variable %s already exists", |
3468 | sym->name); | |
3469 | ||
3470 | /* We always want module variables to be created. */ | |
3471 | sym->attr.referenced = 1; | |
3472 | /* Create the decl. */ | |
3473 | decl = gfc_get_symbol_decl (sym); | |
3474 | ||
4ee9c684 | 3475 | /* Create the variable. */ |
3476 | pushdecl (decl); | |
df4d540f | 3477 | gcc_assert (DECL_CONTEXT (decl) == NULL_TREE); |
3478 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
3479 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
b2c4af5e | 3480 | rest_of_decl_compilation (decl, 1, 0); |
df4d540f | 3481 | gfc_module_add_decl (cur_module, decl); |
4ee9c684 | 3482 | |
3483 | /* Also add length of strings. */ | |
3484 | if (sym->ts.type == BT_CHARACTER) | |
3485 | { | |
3486 | tree length; | |
3487 | ||
eeebe20b | 3488 | length = sym->ts.u.cl->backend_decl; |
cf4b41d8 | 3489 | gcc_assert (length || sym->attr.proc_pointer); |
3490 | if (length && !INTEGER_CST_P (length)) | |
4ee9c684 | 3491 | { |
3492 | pushdecl (length); | |
b2c4af5e | 3493 | rest_of_decl_compilation (length, 1, 0); |
4ee9c684 | 3494 | } |
3495 | } | |
3496 | } | |
3497 | ||
51d9479b | 3498 | /* Emit debug information for USE statements. */ |
df4d540f | 3499 | |
3500 | static void | |
3501 | gfc_trans_use_stmts (gfc_namespace * ns) | |
3502 | { | |
3503 | gfc_use_list *use_stmt; | |
3504 | for (use_stmt = ns->use_stmts; use_stmt; use_stmt = use_stmt->next) | |
3505 | { | |
3506 | struct module_htab_entry *entry | |
3507 | = gfc_find_module (use_stmt->module_name); | |
3508 | gfc_use_rename *rent; | |
3509 | ||
3510 | if (entry->namespace_decl == NULL) | |
3511 | { | |
3512 | entry->namespace_decl | |
e60a6f7b | 3513 | = build_decl (input_location, |
3514 | NAMESPACE_DECL, | |
df4d540f | 3515 | get_identifier (use_stmt->module_name), |
3516 | void_type_node); | |
3517 | DECL_EXTERNAL (entry->namespace_decl) = 1; | |
3518 | } | |
51d9479b | 3519 | gfc_set_backend_locus (&use_stmt->where); |
df4d540f | 3520 | if (!use_stmt->only_flag) |
3521 | (*debug_hooks->imported_module_or_decl) (entry->namespace_decl, | |
3522 | NULL_TREE, | |
3523 | ns->proc_name->backend_decl, | |
3524 | false); | |
3525 | for (rent = use_stmt->rename; rent; rent = rent->next) | |
3526 | { | |
3527 | tree decl, local_name; | |
3528 | void **slot; | |
3529 | ||
3530 | if (rent->op != INTRINSIC_NONE) | |
3531 | continue; | |
3532 | ||
3533 | slot = htab_find_slot_with_hash (entry->decls, rent->use_name, | |
3534 | htab_hash_string (rent->use_name), | |
3535 | INSERT); | |
3536 | if (*slot == NULL) | |
3537 | { | |
3538 | gfc_symtree *st; | |
3539 | ||
3540 | st = gfc_find_symtree (ns->sym_root, | |
3541 | rent->local_name[0] | |
3542 | ? rent->local_name : rent->use_name); | |
857c96ba | 3543 | gcc_assert (st); |
3544 | ||
3545 | /* Sometimes, generic interfaces wind up being over-ruled by a | |
3546 | local symbol (see PR41062). */ | |
3547 | if (!st->n.sym->attr.use_assoc) | |
3548 | continue; | |
3549 | ||
51d9479b | 3550 | if (st->n.sym->backend_decl |
3551 | && DECL_P (st->n.sym->backend_decl) | |
3552 | && st->n.sym->module | |
3553 | && strcmp (st->n.sym->module, use_stmt->module_name) == 0) | |
df4d540f | 3554 | { |
51d9479b | 3555 | gcc_assert (DECL_EXTERNAL (entry->namespace_decl) |
3556 | || (TREE_CODE (st->n.sym->backend_decl) | |
3557 | != VAR_DECL)); | |
df4d540f | 3558 | decl = copy_node (st->n.sym->backend_decl); |
3559 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
3560 | DECL_EXTERNAL (decl) = 1; | |
3561 | DECL_IGNORED_P (decl) = 0; | |
3562 | DECL_INITIAL (decl) = NULL_TREE; | |
3563 | } | |
3564 | else | |
3565 | { | |
3566 | *slot = error_mark_node; | |
3567 | htab_clear_slot (entry->decls, slot); | |
3568 | continue; | |
3569 | } | |
3570 | *slot = decl; | |
3571 | } | |
3572 | decl = (tree) *slot; | |
3573 | if (rent->local_name[0]) | |
3574 | local_name = get_identifier (rent->local_name); | |
3575 | else | |
3576 | local_name = NULL_TREE; | |
51d9479b | 3577 | gfc_set_backend_locus (&rent->where); |
df4d540f | 3578 | (*debug_hooks->imported_module_or_decl) (decl, local_name, |
3579 | ns->proc_name->backend_decl, | |
3580 | !use_stmt->only_flag); | |
3581 | } | |
3582 | } | |
4ee9c684 | 3583 | } |
3584 | ||
51d9479b | 3585 | |
2eb674c9 | 3586 | /* Return true if expr is a constant initializer that gfc_conv_initializer |
3587 | will handle. */ | |
3588 | ||
3589 | static bool | |
3590 | check_constant_initializer (gfc_expr *expr, gfc_typespec *ts, bool array, | |
3591 | bool pointer) | |
3592 | { | |
3593 | gfc_constructor *c; | |
3594 | gfc_component *cm; | |
3595 | ||
3596 | if (pointer) | |
3597 | return true; | |
3598 | else if (array) | |
3599 | { | |
3600 | if (expr->expr_type == EXPR_CONSTANT || expr->expr_type == EXPR_NULL) | |
3601 | return true; | |
3602 | else if (expr->expr_type == EXPR_STRUCTURE) | |
3603 | return check_constant_initializer (expr, ts, false, false); | |
3604 | else if (expr->expr_type != EXPR_ARRAY) | |
3605 | return false; | |
126387b5 | 3606 | for (c = gfc_constructor_first (expr->value.constructor); |
3607 | c; c = gfc_constructor_next (c)) | |
2eb674c9 | 3608 | { |
3609 | if (c->iterator) | |
3610 | return false; | |
3611 | if (c->expr->expr_type == EXPR_STRUCTURE) | |
3612 | { | |
3613 | if (!check_constant_initializer (c->expr, ts, false, false)) | |
3614 | return false; | |
3615 | } | |
3616 | else if (c->expr->expr_type != EXPR_CONSTANT) | |
3617 | return false; | |
3618 | } | |
3619 | return true; | |
3620 | } | |
3621 | else switch (ts->type) | |
3622 | { | |
3623 | case BT_DERIVED: | |
3624 | if (expr->expr_type != EXPR_STRUCTURE) | |
3625 | return false; | |
eeebe20b | 3626 | cm = expr->ts.u.derived->components; |
126387b5 | 3627 | for (c = gfc_constructor_first (expr->value.constructor); |
3628 | c; c = gfc_constructor_next (c), cm = cm->next) | |
2eb674c9 | 3629 | { |
3630 | if (!c->expr || cm->attr.allocatable) | |
3631 | continue; | |
3632 | if (!check_constant_initializer (c->expr, &cm->ts, | |
3633 | cm->attr.dimension, | |
3634 | cm->attr.pointer)) | |
3635 | return false; | |
3636 | } | |
3637 | return true; | |
3638 | default: | |
3639 | return expr->expr_type == EXPR_CONSTANT; | |
3640 | } | |
3641 | } | |
3642 | ||
3643 | /* Emit debug info for parameters and unreferenced variables with | |
3644 | initializers. */ | |
3645 | ||
3646 | static void | |
3647 | gfc_emit_parameter_debug_info (gfc_symbol *sym) | |
3648 | { | |
3649 | tree decl; | |
3650 | ||
3651 | if (sym->attr.flavor != FL_PARAMETER | |
3652 | && (sym->attr.flavor != FL_VARIABLE || sym->attr.referenced)) | |
3653 | return; | |
3654 | ||
3655 | if (sym->backend_decl != NULL | |
3656 | || sym->value == NULL | |
3657 | || sym->attr.use_assoc | |
3658 | || sym->attr.dummy | |
3659 | || sym->attr.result | |
3660 | || sym->attr.function | |
3661 | || sym->attr.intrinsic | |
3662 | || sym->attr.pointer | |
3663 | || sym->attr.allocatable | |
3664 | || sym->attr.cray_pointee | |
3665 | || sym->attr.threadprivate | |
3666 | || sym->attr.is_bind_c | |
3667 | || sym->attr.subref_array_pointer | |
3668 | || sym->attr.assign) | |
3669 | return; | |
3670 | ||
3671 | if (sym->ts.type == BT_CHARACTER) | |
3672 | { | |
eeebe20b | 3673 | gfc_conv_const_charlen (sym->ts.u.cl); |
3674 | if (sym->ts.u.cl->backend_decl == NULL | |
3675 | || TREE_CODE (sym->ts.u.cl->backend_decl) != INTEGER_CST) | |
2eb674c9 | 3676 | return; |
3677 | } | |
eeebe20b | 3678 | else if (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
2eb674c9 | 3679 | return; |
3680 | ||
3681 | if (sym->as) | |
3682 | { | |
3683 | int n; | |
3684 | ||
3685 | if (sym->as->type != AS_EXPLICIT) | |
3686 | return; | |
3687 | for (n = 0; n < sym->as->rank; n++) | |
3688 | if (sym->as->lower[n]->expr_type != EXPR_CONSTANT | |
3689 | || sym->as->upper[n] == NULL | |
3690 | || sym->as->upper[n]->expr_type != EXPR_CONSTANT) | |
3691 | return; | |
3692 | } | |
3693 | ||
3694 | if (!check_constant_initializer (sym->value, &sym->ts, | |
3695 | sym->attr.dimension, false)) | |
3696 | return; | |
3697 | ||
3698 | /* Create the decl for the variable or constant. */ | |
e60a6f7b | 3699 | decl = build_decl (input_location, |
3700 | sym->attr.flavor == FL_PARAMETER ? CONST_DECL : VAR_DECL, | |
2eb674c9 | 3701 | gfc_sym_identifier (sym), gfc_sym_type (sym)); |
3702 | if (sym->attr.flavor == FL_PARAMETER) | |
3703 | TREE_READONLY (decl) = 1; | |
3704 | gfc_set_decl_location (decl, &sym->declared_at); | |
3705 | if (sym->attr.dimension) | |
3706 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
3707 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
3708 | TREE_STATIC (decl) = 1; | |
3709 | TREE_USED (decl) = 1; | |
3710 | if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
3711 | TREE_PUBLIC (decl) = 1; | |
3712 | DECL_INITIAL (decl) | |
3713 | = gfc_conv_initializer (sym->value, &sym->ts, TREE_TYPE (decl), | |
3714 | sym->attr.dimension, 0); | |
3715 | debug_hooks->global_decl (decl); | |
3716 | } | |
3717 | ||
51d9479b | 3718 | /* Generate all the required code for module variables. */ |
3719 | ||
3720 | void | |
3721 | gfc_generate_module_vars (gfc_namespace * ns) | |
3722 | { | |
3723 | module_namespace = ns; | |
3724 | cur_module = gfc_find_module (ns->proc_name->name); | |
3725 | ||
3726 | /* Check if the frontend left the namespace in a reasonable state. */ | |
3727 | gcc_assert (ns->proc_name && !ns->proc_name->tlink); | |
3728 | ||
3729 | /* Generate COMMON blocks. */ | |
3730 | gfc_trans_common (ns); | |
3731 | ||
3732 | /* Create decls for all the module variables. */ | |
3733 | gfc_traverse_ns (ns, gfc_create_module_variable); | |
3734 | ||
3735 | cur_module = NULL; | |
3736 | ||
3737 | gfc_trans_use_stmts (ns); | |
2eb674c9 | 3738 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
51d9479b | 3739 | } |
3740 | ||
3741 | ||
4ee9c684 | 3742 | static void |
3743 | gfc_generate_contained_functions (gfc_namespace * parent) | |
3744 | { | |
3745 | gfc_namespace *ns; | |
3746 | ||
3747 | /* We create all the prototypes before generating any code. */ | |
3748 | for (ns = parent->contained; ns; ns = ns->sibling) | |
3749 | { | |
3750 | /* Skip namespaces from used modules. */ | |
3751 | if (ns->parent != parent) | |
3752 | continue; | |
3753 | ||
d896f9b3 | 3754 | gfc_create_function_decl (ns, false); |
4ee9c684 | 3755 | } |
3756 | ||
3757 | for (ns = parent->contained; ns; ns = ns->sibling) | |
3758 | { | |
3759 | /* Skip namespaces from used modules. */ | |
3760 | if (ns->parent != parent) | |
3761 | continue; | |
3762 | ||
3763 | gfc_generate_function_code (ns); | |
3764 | } | |
3765 | } | |
3766 | ||
3767 | ||
d95efb59 | 3768 | /* Drill down through expressions for the array specification bounds and |
3769 | character length calling generate_local_decl for all those variables | |
3770 | that have not already been declared. */ | |
3771 | ||
3772 | static void | |
3773 | generate_local_decl (gfc_symbol *); | |
3774 | ||
1acb400a | 3775 | /* Traverse expr, marking all EXPR_VARIABLE symbols referenced. */ |
d95efb59 | 3776 | |
1acb400a | 3777 | static bool |
3778 | expr_decls (gfc_expr *e, gfc_symbol *sym, | |
3779 | int *f ATTRIBUTE_UNUSED) | |
3780 | { | |
3781 | if (e->expr_type != EXPR_VARIABLE | |
3782 | || sym == e->symtree->n.sym | |
d95efb59 | 3783 | || e->symtree->n.sym->mark |
3784 | || e->symtree->n.sym->ns != sym->ns) | |
1acb400a | 3785 | return false; |
d95efb59 | 3786 | |
1acb400a | 3787 | generate_local_decl (e->symtree->n.sym); |
3788 | return false; | |
3789 | } | |
d95efb59 | 3790 | |
1acb400a | 3791 | static void |
3792 | generate_expr_decls (gfc_symbol *sym, gfc_expr *e) | |
3793 | { | |
3794 | gfc_traverse_expr (e, sym, expr_decls, 0); | |
d95efb59 | 3795 | } |
3796 | ||
3797 | ||
f6d0e37a | 3798 | /* Check for dependencies in the character length and array spec. */ |
d95efb59 | 3799 | |
3800 | static void | |
3801 | generate_dependency_declarations (gfc_symbol *sym) | |
3802 | { | |
3803 | int i; | |
3804 | ||
3805 | if (sym->ts.type == BT_CHARACTER | |
eeebe20b | 3806 | && sym->ts.u.cl |
3807 | && sym->ts.u.cl->length | |
3808 | && sym->ts.u.cl->length->expr_type != EXPR_CONSTANT) | |
3809 | generate_expr_decls (sym, sym->ts.u.cl->length); | |
d95efb59 | 3810 | |
3811 | if (sym->as && sym->as->rank) | |
3812 | { | |
3813 | for (i = 0; i < sym->as->rank; i++) | |
3814 | { | |
3815 | generate_expr_decls (sym, sym->as->lower[i]); | |
3816 | generate_expr_decls (sym, sym->as->upper[i]); | |
3817 | } | |
3818 | } | |
3819 | } | |
3820 | ||
3821 | ||
4ee9c684 | 3822 | /* Generate decls for all local variables. We do this to ensure correct |
3823 | handling of expressions which only appear in the specification of | |
3824 | other functions. */ | |
3825 | ||
3826 | static void | |
3827 | generate_local_decl (gfc_symbol * sym) | |
3828 | { | |
3829 | if (sym->attr.flavor == FL_VARIABLE) | |
3830 | { | |
d95efb59 | 3831 | if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master) |
8714fc76 | 3832 | generate_dependency_declarations (sym); |
d95efb59 | 3833 | |
4ee9c684 | 3834 | if (sym->attr.referenced) |
8714fc76 | 3835 | gfc_get_symbol_decl (sym); |
4acad347 | 3836 | |
3837 | /* Warnings for unused dummy arguments. */ | |
3838 | else if (sym->attr.dummy) | |
7c0ca46e | 3839 | { |
4acad347 | 3840 | /* INTENT(out) dummy arguments are likely meant to be set. */ |
3841 | if (gfc_option.warn_unused_dummy_argument | |
3842 | && sym->attr.intent == INTENT_OUT) | |
3843 | { | |
3844 | if (sym->ts.type != BT_DERIVED) | |
3845 | gfc_warning ("Dummy argument '%s' at %L was declared " | |
3846 | "INTENT(OUT) but was not set", sym->name, | |
3847 | &sym->declared_at); | |
3848 | else if (!gfc_has_default_initializer (sym->ts.u.derived)) | |
3849 | gfc_warning ("Derived-type dummy argument '%s' at %L was " | |
3850 | "declared INTENT(OUT) but was not set and " | |
3851 | "does not have a default initializer", | |
3852 | sym->name, &sym->declared_at); | |
3853 | } | |
3854 | else if (gfc_option.warn_unused_dummy_argument) | |
3855 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, | |
3856 | &sym->declared_at); | |
7c0ca46e | 3857 | } |
4acad347 | 3858 | |
f888a3fb | 3859 | /* Warn for unused variables, but not if they're inside a common |
14a3addc | 3860 | block or are use-associated. */ |
36609028 | 3861 | else if (warn_unused_variable |
fa7b6574 | 3862 | && !(sym->attr.in_common || sym->attr.use_assoc || sym->mark)) |
6ecfe89d | 3863 | gfc_warning ("Unused variable '%s' declared at %L", sym->name, |
d974cfde | 3864 | &sym->declared_at); |
8714fc76 | 3865 | |
d4163395 | 3866 | /* For variable length CHARACTER parameters, the PARM_DECL already |
3867 | references the length variable, so force gfc_get_symbol_decl | |
3868 | even when not referenced. If optimize > 0, it will be optimized | |
3869 | away anyway. But do this only after emitting -Wunused-parameter | |
3870 | warning if requested. */ | |
8714fc76 | 3871 | if (sym->attr.dummy && !sym->attr.referenced |
3872 | && sym->ts.type == BT_CHARACTER | |
eeebe20b | 3873 | && sym->ts.u.cl->backend_decl != NULL |
3874 | && TREE_CODE (sym->ts.u.cl->backend_decl) == VAR_DECL) | |
d4163395 | 3875 | { |
3876 | sym->attr.referenced = 1; | |
3877 | gfc_get_symbol_decl (sym); | |
3878 | } | |
76776e6d | 3879 | |
d0163401 | 3880 | /* INTENT(out) dummy arguments and result variables with allocatable |
3881 | components are reset by default and need to be set referenced to | |
3882 | generate the code for nullification and automatic lengths. */ | |
3883 | if (!sym->attr.referenced | |
8714fc76 | 3884 | && sym->ts.type == BT_DERIVED |
eeebe20b | 3885 | && sym->ts.u.derived->attr.alloc_comp |
c49db15e | 3886 | && !sym->attr.pointer |
d0163401 | 3887 | && ((sym->attr.dummy && sym->attr.intent == INTENT_OUT) |
3888 | || | |
3889 | (sym->attr.result && sym != sym->result))) | |
8714fc76 | 3890 | { |
3891 | sym->attr.referenced = 1; | |
3892 | gfc_get_symbol_decl (sym); | |
3893 | } | |
3894 | ||
e72f979a | 3895 | /* Check for dependencies in the array specification and string |
3896 | length, adding the necessary declarations to the function. We | |
3897 | mark the symbol now, as well as in traverse_ns, to prevent | |
3898 | getting stuck in a circular dependency. */ | |
3899 | sym->mark = 1; | |
3900 | ||
76776e6d | 3901 | /* We do not want the middle-end to warn about unused parameters |
3902 | as this was already done above. */ | |
3903 | if (sym->attr.dummy && sym->backend_decl != NULL_TREE) | |
3904 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
4ee9c684 | 3905 | } |
5dd246c1 | 3906 | else if (sym->attr.flavor == FL_PARAMETER) |
3907 | { | |
6ecfe89d | 3908 | if (warn_unused_parameter |
5dd246c1 | 3909 | && !sym->attr.referenced |
3910 | && !sym->attr.use_assoc) | |
6ecfe89d | 3911 | gfc_warning ("Unused parameter '%s' declared at %L", sym->name, |
5dd246c1 | 3912 | &sym->declared_at); |
3913 | } | |
fa7b6574 | 3914 | else if (sym->attr.flavor == FL_PROCEDURE) |
3915 | { | |
3916 | /* TODO: move to the appropriate place in resolve.c. */ | |
3917 | if (warn_return_type | |
3918 | && sym->attr.function | |
3919 | && sym->result | |
3920 | && sym != sym->result | |
3921 | && !sym->result->attr.referenced | |
3922 | && !sym->attr.use_assoc | |
3923 | && sym->attr.if_source != IFSRC_IFBODY) | |
3924 | { | |
3925 | gfc_warning ("Return value '%s' of function '%s' declared at " | |
3926 | "%L not set", sym->result->name, sym->name, | |
3927 | &sym->result->declared_at); | |
3928 | ||
3929 | /* Prevents "Unused variable" warning for RESULT variables. */ | |
e72f979a | 3930 | sym->result->mark = 1; |
fa7b6574 | 3931 | } |
3932 | } | |
c5d33754 | 3933 | |
19ba2ad8 | 3934 | if (sym->attr.dummy == 1) |
3935 | { | |
3936 | /* Modify the tree type for scalar character dummy arguments of bind(c) | |
3937 | procedures if they are passed by value. The tree type for them will | |
3938 | be promoted to INTEGER_TYPE for the middle end, which appears to be | |
3939 | what C would do with characters passed by-value. The value attribute | |
3940 | implies the dummy is a scalar. */ | |
3941 | if (sym->attr.value == 1 && sym->backend_decl != NULL | |
3942 | && sym->ts.type == BT_CHARACTER && sym->ts.is_c_interop | |
3943 | && sym->ns->proc_name != NULL && sym->ns->proc_name->attr.is_bind_c) | |
4c47c8b7 | 3944 | gfc_conv_scalar_char_value (sym, NULL, NULL); |
19ba2ad8 | 3945 | } |
3946 | ||
c5d33754 | 3947 | /* Make sure we convert the types of the derived types from iso_c_binding |
3948 | into (void *). */ | |
3949 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
3950 | && sym->ts.type == BT_DERIVED) | |
3951 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
4ee9c684 | 3952 | } |
3953 | ||
3954 | static void | |
3955 | generate_local_vars (gfc_namespace * ns) | |
3956 | { | |
3957 | gfc_traverse_ns (ns, generate_local_decl); | |
3958 | } | |
3959 | ||
3960 | ||
1b716045 | 3961 | /* Generate a switch statement to jump to the correct entry point. Also |
3962 | creates the label decls for the entry points. */ | |
4ee9c684 | 3963 | |
1b716045 | 3964 | static tree |
3965 | gfc_trans_entry_master_switch (gfc_entry_list * el) | |
4ee9c684 | 3966 | { |
1b716045 | 3967 | stmtblock_t block; |
3968 | tree label; | |
3969 | tree tmp; | |
3970 | tree val; | |
4ee9c684 | 3971 | |
1b716045 | 3972 | gfc_init_block (&block); |
3973 | for (; el; el = el->next) | |
3974 | { | |
3975 | /* Add the case label. */ | |
b797d6d3 | 3976 | label = gfc_build_label_decl (NULL_TREE); |
7016c612 | 3977 | val = build_int_cst (gfc_array_index_type, el->id); |
ed52ef8b | 3978 | tmp = build3_v (CASE_LABEL_EXPR, val, NULL_TREE, label); |
1b716045 | 3979 | gfc_add_expr_to_block (&block, tmp); |
5b11d932 | 3980 | |
1b716045 | 3981 | /* And jump to the actual entry point. */ |
3982 | label = gfc_build_label_decl (NULL_TREE); | |
1b716045 | 3983 | tmp = build1_v (GOTO_EXPR, label); |
3984 | gfc_add_expr_to_block (&block, tmp); | |
3985 | ||
3986 | /* Save the label decl. */ | |
3987 | el->label = label; | |
3988 | } | |
3989 | tmp = gfc_finish_block (&block); | |
3990 | /* The first argument selects the entry point. */ | |
3991 | val = DECL_ARGUMENTS (current_function_decl); | |
ed52ef8b | 3992 | tmp = build3_v (SWITCH_EXPR, val, tmp, NULL_TREE); |
1b716045 | 3993 | return tmp; |
4ee9c684 | 3994 | } |
3995 | ||
6374121b | 3996 | |
a4abf8a0 | 3997 | /* Add code to string lengths of actual arguments passed to a function against |
3998 | the expected lengths of the dummy arguments. */ | |
3999 | ||
4000 | static void | |
4001 | add_argument_checking (stmtblock_t *block, gfc_symbol *sym) | |
4002 | { | |
4003 | gfc_formal_arglist *formal; | |
4004 | ||
4005 | for (formal = sym->formal; formal; formal = formal->next) | |
4006 | if (formal->sym && formal->sym->ts.type == BT_CHARACTER) | |
4007 | { | |
4008 | enum tree_code comparison; | |
4009 | tree cond; | |
4010 | tree argname; | |
4011 | gfc_symbol *fsym; | |
4012 | gfc_charlen *cl; | |
4013 | const char *message; | |
4014 | ||
4015 | fsym = formal->sym; | |
eeebe20b | 4016 | cl = fsym->ts.u.cl; |
a4abf8a0 | 4017 | |
4018 | gcc_assert (cl); | |
4019 | gcc_assert (cl->passed_length != NULL_TREE); | |
4020 | gcc_assert (cl->backend_decl != NULL_TREE); | |
4021 | ||
4022 | /* For POINTER, ALLOCATABLE and assumed-shape dummy arguments, the | |
4023 | string lengths must match exactly. Otherwise, it is only required | |
be4be771 | 4024 | that the actual string length is *at least* the expected one. |
4025 | Sequence association allows for a mismatch of the string length | |
4026 | if the actual argument is (part of) an array, but only if the | |
4027 | dummy argument is an array. (See "Sequence association" in | |
4028 | Section 12.4.1.4 for F95 and 12.4.1.5 for F2003.) */ | |
a4abf8a0 | 4029 | if (fsym->attr.pointer || fsym->attr.allocatable |
4030 | || (fsym->as && fsym->as->type == AS_ASSUMED_SHAPE)) | |
4031 | { | |
4032 | comparison = NE_EXPR; | |
4033 | message = _("Actual string length does not match the declared one" | |
4034 | " for dummy argument '%s' (%ld/%ld)"); | |
4035 | } | |
be4be771 | 4036 | else if (fsym->as && fsym->as->rank != 0) |
4037 | continue; | |
a4abf8a0 | 4038 | else |
4039 | { | |
4040 | comparison = LT_EXPR; | |
4041 | message = _("Actual string length is shorter than the declared one" | |
4042 | " for dummy argument '%s' (%ld/%ld)"); | |
4043 | } | |
4044 | ||
4045 | /* Build the condition. For optional arguments, an actual length | |
4046 | of 0 is also acceptable if the associated string is NULL, which | |
4047 | means the argument was not passed. */ | |
4048 | cond = fold_build2 (comparison, boolean_type_node, | |
4049 | cl->passed_length, cl->backend_decl); | |
4050 | if (fsym->attr.optional) | |
4051 | { | |
4052 | tree not_absent; | |
4053 | tree not_0length; | |
4054 | tree absent_failed; | |
4055 | ||
4056 | not_0length = fold_build2 (NE_EXPR, boolean_type_node, | |
4057 | cl->passed_length, | |
4058 | fold_convert (gfc_charlen_type_node, | |
4059 | integer_zero_node)); | |
5fa0fdc2 | 4060 | /* The symbol needs to be referenced for gfc_get_symbol_decl. */ |
4061 | fsym->attr.referenced = 1; | |
4062 | not_absent = gfc_conv_expr_present (fsym); | |
a4abf8a0 | 4063 | |
4064 | absent_failed = fold_build2 (TRUTH_OR_EXPR, boolean_type_node, | |
4065 | not_0length, not_absent); | |
4066 | ||
4067 | cond = fold_build2 (TRUTH_AND_EXPR, boolean_type_node, | |
4068 | cond, absent_failed); | |
4069 | } | |
4070 | ||
4071 | /* Build the runtime check. */ | |
4072 | argname = gfc_build_cstring_const (fsym->name); | |
4073 | argname = gfc_build_addr_expr (pchar_type_node, argname); | |
4074 | gfc_trans_runtime_check (true, false, cond, block, &fsym->declared_at, | |
4075 | message, argname, | |
4076 | fold_convert (long_integer_type_node, | |
4077 | cl->passed_length), | |
4078 | fold_convert (long_integer_type_node, | |
4079 | cl->backend_decl)); | |
4080 | } | |
4081 | } | |
4082 | ||
4083 | ||
7257a5d2 | 4084 | static void |
4085 | create_main_function (tree fndecl) | |
4086 | { | |
43702da6 | 4087 | tree old_context; |
7257a5d2 | 4088 | tree ftn_main; |
4089 | tree tmp, decl, result_decl, argc, argv, typelist, arglist; | |
4090 | stmtblock_t body; | |
4091 | ||
43702da6 | 4092 | old_context = current_function_decl; |
4093 | ||
4094 | if (old_context) | |
4095 | { | |
4096 | push_function_context (); | |
4097 | saved_parent_function_decls = saved_function_decls; | |
4098 | saved_function_decls = NULL_TREE; | |
4099 | } | |
4100 | ||
7257a5d2 | 4101 | /* main() function must be declared with global scope. */ |
4102 | gcc_assert (current_function_decl == NULL_TREE); | |
4103 | ||
4104 | /* Declare the function. */ | |
4105 | tmp = build_function_type_list (integer_type_node, integer_type_node, | |
4106 | build_pointer_type (pchar_type_node), | |
4107 | NULL_TREE); | |
0509d0ee | 4108 | main_identifier_node = get_identifier ("main"); |
e60a6f7b | 4109 | ftn_main = build_decl (input_location, FUNCTION_DECL, |
4110 | main_identifier_node, tmp); | |
7257a5d2 | 4111 | DECL_EXTERNAL (ftn_main) = 0; |
4112 | TREE_PUBLIC (ftn_main) = 1; | |
4113 | TREE_STATIC (ftn_main) = 1; | |
4114 | DECL_ATTRIBUTES (ftn_main) | |
4115 | = tree_cons (get_identifier("externally_visible"), NULL_TREE, NULL_TREE); | |
4116 | ||
4117 | /* Setup the result declaration (for "return 0"). */ | |
e60a6f7b | 4118 | result_decl = build_decl (input_location, |
4119 | RESULT_DECL, NULL_TREE, integer_type_node); | |
7257a5d2 | 4120 | DECL_ARTIFICIAL (result_decl) = 1; |
4121 | DECL_IGNORED_P (result_decl) = 1; | |
4122 | DECL_CONTEXT (result_decl) = ftn_main; | |
4123 | DECL_RESULT (ftn_main) = result_decl; | |
4124 | ||
4125 | pushdecl (ftn_main); | |
4126 | ||
4127 | /* Get the arguments. */ | |
4128 | ||
4129 | arglist = NULL_TREE; | |
4130 | typelist = TYPE_ARG_TYPES (TREE_TYPE (ftn_main)); | |
4131 | ||
4132 | tmp = TREE_VALUE (typelist); | |
e60a6f7b | 4133 | argc = build_decl (input_location, PARM_DECL, get_identifier ("argc"), tmp); |
7257a5d2 | 4134 | DECL_CONTEXT (argc) = ftn_main; |
4135 | DECL_ARG_TYPE (argc) = TREE_VALUE (typelist); | |
4136 | TREE_READONLY (argc) = 1; | |
4137 | gfc_finish_decl (argc); | |
4138 | arglist = chainon (arglist, argc); | |
4139 | ||
4140 | typelist = TREE_CHAIN (typelist); | |
4141 | tmp = TREE_VALUE (typelist); | |
e60a6f7b | 4142 | argv = build_decl (input_location, PARM_DECL, get_identifier ("argv"), tmp); |
7257a5d2 | 4143 | DECL_CONTEXT (argv) = ftn_main; |
4144 | DECL_ARG_TYPE (argv) = TREE_VALUE (typelist); | |
4145 | TREE_READONLY (argv) = 1; | |
4146 | DECL_BY_REFERENCE (argv) = 1; | |
4147 | gfc_finish_decl (argv); | |
4148 | arglist = chainon (arglist, argv); | |
4149 | ||
4150 | DECL_ARGUMENTS (ftn_main) = arglist; | |
4151 | current_function_decl = ftn_main; | |
4152 | announce_function (ftn_main); | |
4153 | ||
4154 | rest_of_decl_compilation (ftn_main, 1, 0); | |
4155 | make_decl_rtl (ftn_main); | |
4156 | init_function_start (ftn_main); | |
4157 | pushlevel (0); | |
4158 | ||
4159 | gfc_init_block (&body); | |
4160 | ||
4161 | /* Call some libgfortran initialization routines, call then MAIN__(). */ | |
4162 | ||
4163 | /* Call _gfortran_set_args (argc, argv). */ | |
43702da6 | 4164 | TREE_USED (argc) = 1; |
4165 | TREE_USED (argv) = 1; | |
389dd41b | 4166 | tmp = build_call_expr_loc (input_location, |
4167 | gfor_fndecl_set_args, 2, argc, argv); | |
7257a5d2 | 4168 | gfc_add_expr_to_block (&body, tmp); |
4169 | ||
4170 | /* Add a call to set_options to set up the runtime library Fortran | |
4171 | language standard parameters. */ | |
4172 | { | |
4173 | tree array_type, array, var; | |
06f13dc1 | 4174 | VEC(constructor_elt,gc) *v = NULL; |
7257a5d2 | 4175 | |
4176 | /* Passing a new option to the library requires four modifications: | |
4177 | + add it to the tree_cons list below | |
4178 | + change the array size in the call to build_array_type | |
4179 | + change the first argument to the library call | |
4180 | gfor_fndecl_set_options | |
4181 | + modify the library (runtime/compile_options.c)! */ | |
4182 | ||
06f13dc1 | 4183 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
4184 | build_int_cst (integer_type_node, | |
4185 | gfc_option.warn_std)); | |
4186 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4187 | build_int_cst (integer_type_node, | |
4188 | gfc_option.allow_std)); | |
4189 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4190 | build_int_cst (integer_type_node, pedantic)); | |
4191 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4192 | build_int_cst (integer_type_node, | |
4193 | gfc_option.flag_dump_core)); | |
4194 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4195 | build_int_cst (integer_type_node, | |
4196 | gfc_option.flag_backtrace)); | |
4197 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4198 | build_int_cst (integer_type_node, | |
4199 | gfc_option.flag_sign_zero)); | |
4200 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4201 | build_int_cst (integer_type_node, | |
4202 | (gfc_option.rtcheck | |
4203 | & GFC_RTCHECK_BOUNDS))); | |
4204 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4205 | build_int_cst (integer_type_node, | |
4206 | gfc_option.flag_range_check)); | |
7257a5d2 | 4207 | |
4208 | array_type = build_array_type (integer_type_node, | |
4209 | build_index_type (build_int_cst (NULL_TREE, 7))); | |
06f13dc1 | 4210 | array = build_constructor (array_type, v); |
7257a5d2 | 4211 | TREE_CONSTANT (array) = 1; |
4212 | TREE_STATIC (array) = 1; | |
4213 | ||
4214 | /* Create a static variable to hold the jump table. */ | |
4215 | var = gfc_create_var (array_type, "options"); | |
4216 | TREE_CONSTANT (var) = 1; | |
4217 | TREE_STATIC (var) = 1; | |
4218 | TREE_READONLY (var) = 1; | |
4219 | DECL_INITIAL (var) = array; | |
4220 | var = gfc_build_addr_expr (build_pointer_type (integer_type_node), var); | |
4221 | ||
389dd41b | 4222 | tmp = build_call_expr_loc (input_location, |
4223 | gfor_fndecl_set_options, 2, | |
7257a5d2 | 4224 | build_int_cst (integer_type_node, 8), var); |
4225 | gfc_add_expr_to_block (&body, tmp); | |
4226 | } | |
4227 | ||
4228 | /* If -ffpe-trap option was provided, add a call to set_fpe so that | |
4229 | the library will raise a FPE when needed. */ | |
4230 | if (gfc_option.fpe != 0) | |
4231 | { | |
389dd41b | 4232 | tmp = build_call_expr_loc (input_location, |
4233 | gfor_fndecl_set_fpe, 1, | |
7257a5d2 | 4234 | build_int_cst (integer_type_node, |
4235 | gfc_option.fpe)); | |
4236 | gfc_add_expr_to_block (&body, tmp); | |
4237 | } | |
4238 | ||
4239 | /* If this is the main program and an -fconvert option was provided, | |
4240 | add a call to set_convert. */ | |
4241 | ||
4242 | if (gfc_option.convert != GFC_CONVERT_NATIVE) | |
4243 | { | |
389dd41b | 4244 | tmp = build_call_expr_loc (input_location, |
4245 | gfor_fndecl_set_convert, 1, | |
7257a5d2 | 4246 | build_int_cst (integer_type_node, |
4247 | gfc_option.convert)); | |
4248 | gfc_add_expr_to_block (&body, tmp); | |
4249 | } | |
4250 | ||
4251 | /* If this is the main program and an -frecord-marker option was provided, | |
4252 | add a call to set_record_marker. */ | |
4253 | ||
4254 | if (gfc_option.record_marker != 0) | |
4255 | { | |
389dd41b | 4256 | tmp = build_call_expr_loc (input_location, |
4257 | gfor_fndecl_set_record_marker, 1, | |
7257a5d2 | 4258 | build_int_cst (integer_type_node, |
4259 | gfc_option.record_marker)); | |
4260 | gfc_add_expr_to_block (&body, tmp); | |
4261 | } | |
4262 | ||
4263 | if (gfc_option.max_subrecord_length != 0) | |
4264 | { | |
389dd41b | 4265 | tmp = build_call_expr_loc (input_location, |
4266 | gfor_fndecl_set_max_subrecord_length, 1, | |
7257a5d2 | 4267 | build_int_cst (integer_type_node, |
4268 | gfc_option.max_subrecord_length)); | |
4269 | gfc_add_expr_to_block (&body, tmp); | |
4270 | } | |
4271 | ||
4272 | /* Call MAIN__(). */ | |
389dd41b | 4273 | tmp = build_call_expr_loc (input_location, |
4274 | fndecl, 0); | |
7257a5d2 | 4275 | gfc_add_expr_to_block (&body, tmp); |
4276 | ||
43702da6 | 4277 | /* Mark MAIN__ as used. */ |
4278 | TREE_USED (fndecl) = 1; | |
4279 | ||
7257a5d2 | 4280 | /* "return 0". */ |
4281 | tmp = fold_build2 (MODIFY_EXPR, integer_type_node, DECL_RESULT (ftn_main), | |
4282 | build_int_cst (integer_type_node, 0)); | |
4283 | tmp = build1_v (RETURN_EXPR, tmp); | |
4284 | gfc_add_expr_to_block (&body, tmp); | |
4285 | ||
4286 | ||
4287 | DECL_SAVED_TREE (ftn_main) = gfc_finish_block (&body); | |
4288 | decl = getdecls (); | |
4289 | ||
4290 | /* Finish off this function and send it for code generation. */ | |
4291 | poplevel (1, 0, 1); | |
4292 | BLOCK_SUPERCONTEXT (DECL_INITIAL (ftn_main)) = ftn_main; | |
4293 | ||
4294 | DECL_SAVED_TREE (ftn_main) | |
4295 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (ftn_main), | |
4296 | DECL_INITIAL (ftn_main)); | |
4297 | ||
4298 | /* Output the GENERIC tree. */ | |
4299 | dump_function (TDI_original, ftn_main); | |
4300 | ||
bb982f66 | 4301 | cgraph_finalize_function (ftn_main, true); |
43702da6 | 4302 | |
4303 | if (old_context) | |
4304 | { | |
4305 | pop_function_context (); | |
4306 | saved_function_decls = saved_parent_function_decls; | |
4307 | } | |
4308 | current_function_decl = old_context; | |
7257a5d2 | 4309 | } |
4310 | ||
4311 | ||
89ac8ba1 | 4312 | /* Get the result expression for a procedure. */ |
4313 | ||
4314 | static tree | |
4315 | get_proc_result (gfc_symbol* sym) | |
4316 | { | |
4317 | if (sym->attr.subroutine || sym == sym->result) | |
4318 | { | |
4319 | if (current_fake_result_decl != NULL) | |
4320 | return TREE_VALUE (current_fake_result_decl); | |
4321 | ||
4322 | return NULL_TREE; | |
4323 | } | |
4324 | ||
4325 | return sym->result->backend_decl; | |
4326 | } | |
4327 | ||
4328 | ||
4329 | /* Generate an appropriate return-statement for a procedure. */ | |
4330 | ||
4331 | tree | |
4332 | gfc_generate_return (void) | |
4333 | { | |
4334 | gfc_symbol* sym; | |
4335 | tree result; | |
4336 | tree fndecl; | |
4337 | ||
4338 | sym = current_procedure_symbol; | |
4339 | fndecl = sym->backend_decl; | |
4340 | ||
4341 | if (TREE_TYPE (DECL_RESULT (fndecl)) == void_type_node) | |
4342 | result = NULL_TREE; | |
4343 | else | |
4344 | { | |
4345 | result = get_proc_result (sym); | |
4346 | ||
4347 | /* Set the return value to the dummy result variable. The | |
4348 | types may be different for scalar default REAL functions | |
4349 | with -ff2c, therefore we have to convert. */ | |
4350 | if (result != NULL_TREE) | |
4351 | { | |
4352 | result = convert (TREE_TYPE (DECL_RESULT (fndecl)), result); | |
4353 | result = fold_build2 (MODIFY_EXPR, TREE_TYPE (result), | |
4354 | DECL_RESULT (fndecl), result); | |
4355 | } | |
4356 | } | |
4357 | ||
4358 | return build1_v (RETURN_EXPR, result); | |
4359 | } | |
4360 | ||
4361 | ||
4ee9c684 | 4362 | /* Generate code for a function. */ |
4363 | ||
4364 | void | |
4365 | gfc_generate_function_code (gfc_namespace * ns) | |
4366 | { | |
4367 | tree fndecl; | |
4368 | tree old_context; | |
4369 | tree decl; | |
4370 | tree tmp; | |
89ac8ba1 | 4371 | stmtblock_t init, cleanup; |
4ee9c684 | 4372 | stmtblock_t body; |
89ac8ba1 | 4373 | gfc_wrapped_block try_block; |
5fa0fdc2 | 4374 | tree recurcheckvar = NULL_TREE; |
4ee9c684 | 4375 | gfc_symbol *sym; |
89ac8ba1 | 4376 | gfc_symbol *previous_procedure_symbol; |
2294b616 | 4377 | int rank; |
e50e62f5 | 4378 | bool is_recursive; |
4ee9c684 | 4379 | |
4380 | sym = ns->proc_name; | |
89ac8ba1 | 4381 | previous_procedure_symbol = current_procedure_symbol; |
4382 | current_procedure_symbol = sym; | |
1b716045 | 4383 | |
4ee9c684 | 4384 | /* Check that the frontend isn't still using this. */ |
22d678e8 | 4385 | gcc_assert (sym->tlink == NULL); |
4ee9c684 | 4386 | sym->tlink = sym; |
4387 | ||
4388 | /* Create the declaration for functions with global scope. */ | |
4389 | if (!sym->backend_decl) | |
d896f9b3 | 4390 | gfc_create_function_decl (ns, false); |
4ee9c684 | 4391 | |
4392 | fndecl = sym->backend_decl; | |
4393 | old_context = current_function_decl; | |
4394 | ||
4395 | if (old_context) | |
4396 | { | |
4397 | push_function_context (); | |
4398 | saved_parent_function_decls = saved_function_decls; | |
4399 | saved_function_decls = NULL_TREE; | |
4400 | } | |
4401 | ||
1b716045 | 4402 | trans_function_start (sym); |
4ee9c684 | 4403 | |
89ac8ba1 | 4404 | gfc_init_block (&init); |
4ee9c684 | 4405 | |
c6871095 | 4406 | if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER) |
4407 | { | |
4408 | /* Copy length backend_decls to all entry point result | |
4409 | symbols. */ | |
4410 | gfc_entry_list *el; | |
4411 | tree backend_decl; | |
4412 | ||
eeebe20b | 4413 | gfc_conv_const_charlen (ns->proc_name->ts.u.cl); |
4414 | backend_decl = ns->proc_name->result->ts.u.cl->backend_decl; | |
c6871095 | 4415 | for (el = ns->entries; el; el = el->next) |
eeebe20b | 4416 | el->sym->result->ts.u.cl->backend_decl = backend_decl; |
c6871095 | 4417 | } |
4418 | ||
4ee9c684 | 4419 | /* Translate COMMON blocks. */ |
4420 | gfc_trans_common (ns); | |
4421 | ||
c750cc52 | 4422 | /* Null the parent fake result declaration if this namespace is |
4423 | a module function or an external procedures. */ | |
4424 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
4425 | || ns->parent == NULL) | |
4426 | parent_fake_result_decl = NULL_TREE; | |
4427 | ||
2b685f8e | 4428 | gfc_generate_contained_functions (ns); |
4429 | ||
9579733e | 4430 | nonlocal_dummy_decls = NULL; |
4431 | nonlocal_dummy_decl_pset = NULL; | |
4432 | ||
4ee9c684 | 4433 | generate_local_vars (ns); |
5b11d932 | 4434 | |
c750cc52 | 4435 | /* Keep the parent fake result declaration in module functions |
4436 | or external procedures. */ | |
4437 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
4438 | || ns->parent == NULL) | |
4439 | current_fake_result_decl = parent_fake_result_decl; | |
4440 | else | |
4441 | current_fake_result_decl = NULL_TREE; | |
4442 | ||
89ac8ba1 | 4443 | is_recursive = sym->attr.recursive |
4444 | || (sym->attr.entry_master | |
4445 | && sym->ns->entries->sym->attr.recursive); | |
4446 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
4447 | && !is_recursive | |
4448 | && !gfc_option.flag_recursive) | |
4449 | { | |
4450 | char * msg; | |
4451 | ||
4452 | asprintf (&msg, "Recursive call to nonrecursive procedure '%s'", | |
4453 | sym->name); | |
4454 | recurcheckvar = gfc_create_var (boolean_type_node, "is_recursive"); | |
4455 | TREE_STATIC (recurcheckvar) = 1; | |
4456 | DECL_INITIAL (recurcheckvar) = boolean_false_node; | |
4457 | gfc_add_expr_to_block (&init, recurcheckvar); | |
4458 | gfc_trans_runtime_check (true, false, recurcheckvar, &init, | |
4459 | &sym->declared_at, msg); | |
4460 | gfc_add_modify (&init, recurcheckvar, boolean_true_node); | |
4461 | gfc_free (msg); | |
4462 | } | |
4ee9c684 | 4463 | |
4464 | /* Now generate the code for the body of this function. */ | |
4465 | gfc_init_block (&body); | |
4466 | ||
4467 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node | |
89ac8ba1 | 4468 | && sym->attr.subroutine) |
4ee9c684 | 4469 | { |
4470 | tree alternate_return; | |
c750cc52 | 4471 | alternate_return = gfc_get_fake_result_decl (sym, 0); |
75a70cf9 | 4472 | gfc_add_modify (&body, alternate_return, integer_zero_node); |
4ee9c684 | 4473 | } |
4474 | ||
1b716045 | 4475 | if (ns->entries) |
4476 | { | |
4477 | /* Jump to the correct entry point. */ | |
4478 | tmp = gfc_trans_entry_master_switch (ns->entries); | |
4479 | gfc_add_expr_to_block (&body, tmp); | |
4480 | } | |
4481 | ||
a4abf8a0 | 4482 | /* If bounds-checking is enabled, generate code to check passed in actual |
4483 | arguments against the expected dummy argument attributes (e.g. string | |
4484 | lengths). */ | |
c1630d65 | 4485 | if ((gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) && !sym->attr.is_bind_c) |
a4abf8a0 | 4486 | add_argument_checking (&body, sym); |
4487 | ||
4ee9c684 | 4488 | tmp = gfc_trans_code (ns->code); |
4489 | gfc_add_expr_to_block (&body, tmp); | |
4490 | ||
4ee9c684 | 4491 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node) |
4492 | { | |
89ac8ba1 | 4493 | tree result = get_proc_result (sym); |
4ee9c684 | 4494 | |
5fa0fdc2 | 4495 | if (result != NULL_TREE |
4496 | && sym->attr.function | |
4497 | && !sym->attr.pointer) | |
2294b616 | 4498 | { |
53169279 | 4499 | if (sym->ts.type == BT_DERIVED |
4500 | && sym->ts.u.derived->attr.alloc_comp) | |
4501 | { | |
4502 | rank = sym->as ? sym->as->rank : 0; | |
89ac8ba1 | 4503 | tmp = gfc_nullify_alloc_comp (sym->ts.u.derived, result, rank); |
4504 | gfc_add_expr_to_block (&init, tmp); | |
53169279 | 4505 | } |
4506 | else if (sym->attr.allocatable && sym->attr.dimension == 0) | |
89ac8ba1 | 4507 | gfc_add_modify (&init, result, fold_convert (TREE_TYPE (result), |
4508 | null_pointer_node)); | |
5176859a | 4509 | } |
e50e62f5 | 4510 | |
fa7b6574 | 4511 | if (result == NULL_TREE) |
4512 | { | |
4513 | /* TODO: move to the appropriate place in resolve.c. */ | |
4514 | if (warn_return_type && !sym->attr.referenced && sym == sym->result) | |
4515 | gfc_warning ("Return value of function '%s' at %L not set", | |
4516 | sym->name, &sym->declared_at); | |
2294b616 | 4517 | |
fa7b6574 | 4518 | TREE_NO_WARNING(sym->backend_decl) = 1; |
4519 | } | |
4ee9c684 | 4520 | else |
89ac8ba1 | 4521 | gfc_add_expr_to_block (&body, gfc_generate_return ()); |
4ee9c684 | 4522 | } |
89ac8ba1 | 4523 | |
4524 | gfc_init_block (&cleanup); | |
4525 | ||
4526 | /* Reset recursion-check variable. */ | |
4527 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
4528 | && !is_recursive | |
4529 | && !gfc_option.flag_openmp | |
4530 | && recurcheckvar != NULL_TREE) | |
e50e62f5 | 4531 | { |
89ac8ba1 | 4532 | gfc_add_modify (&cleanup, recurcheckvar, boolean_false_node); |
4533 | recurcheckvar = NULL; | |
e50e62f5 | 4534 | } |
2294b616 | 4535 | |
89ac8ba1 | 4536 | /* Finish the function body and add init and cleanup code. */ |
4537 | tmp = gfc_finish_block (&body); | |
4538 | gfc_start_wrapped_block (&try_block, tmp); | |
4539 | /* Add code to create and cleanup arrays. */ | |
4540 | gfc_trans_deferred_vars (sym, &try_block); | |
4541 | gfc_add_init_cleanup (&try_block, gfc_finish_block (&init), | |
4542 | gfc_finish_block (&cleanup)); | |
4ee9c684 | 4543 | |
4544 | /* Add all the decls we created during processing. */ | |
4545 | decl = saved_function_decls; | |
4546 | while (decl) | |
4547 | { | |
4548 | tree next; | |
4549 | ||
1767a056 | 4550 | next = DECL_CHAIN (decl); |
4551 | DECL_CHAIN (decl) = NULL_TREE; | |
4ee9c684 | 4552 | pushdecl (decl); |
4553 | decl = next; | |
4554 | } | |
4555 | saved_function_decls = NULL_TREE; | |
4556 | ||
89ac8ba1 | 4557 | DECL_SAVED_TREE (fndecl) = gfc_finish_wrapped_block (&try_block); |
e5004242 | 4558 | decl = getdecls (); |
4ee9c684 | 4559 | |
4560 | /* Finish off this function and send it for code generation. */ | |
4561 | poplevel (1, 0, 1); | |
4562 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
4563 | ||
e5004242 | 4564 | DECL_SAVED_TREE (fndecl) |
4565 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
4566 | DECL_INITIAL (fndecl)); | |
4567 | ||
9579733e | 4568 | if (nonlocal_dummy_decls) |
4569 | { | |
4570 | BLOCK_VARS (DECL_INITIAL (fndecl)) | |
4571 | = chainon (BLOCK_VARS (DECL_INITIAL (fndecl)), nonlocal_dummy_decls); | |
4572 | pointer_set_destroy (nonlocal_dummy_decl_pset); | |
4573 | nonlocal_dummy_decls = NULL; | |
4574 | nonlocal_dummy_decl_pset = NULL; | |
4575 | } | |
4576 | ||
4ee9c684 | 4577 | /* Output the GENERIC tree. */ |
4578 | dump_function (TDI_original, fndecl); | |
4579 | ||
4580 | /* Store the end of the function, so that we get good line number | |
4581 | info for the epilogue. */ | |
4582 | cfun->function_end_locus = input_location; | |
4583 | ||
4584 | /* We're leaving the context of this function, so zap cfun. | |
4585 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
4586 | tree_rest_of_compilation. */ | |
87d4aa85 | 4587 | set_cfun (NULL); |
4ee9c684 | 4588 | |
4589 | if (old_context) | |
4590 | { | |
4591 | pop_function_context (); | |
4592 | saved_function_decls = saved_parent_function_decls; | |
4593 | } | |
4594 | current_function_decl = old_context; | |
4595 | ||
4596 | if (decl_function_context (fndecl)) | |
6374121b | 4597 | /* Register this function with cgraph just far enough to get it |
4598 | added to our parent's nested function list. */ | |
4599 | (void) cgraph_node (fndecl); | |
4ee9c684 | 4600 | else |
bb982f66 | 4601 | cgraph_finalize_function (fndecl, true); |
df4d540f | 4602 | |
4603 | gfc_trans_use_stmts (ns); | |
2eb674c9 | 4604 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
7257a5d2 | 4605 | |
4606 | if (sym->attr.is_main_program) | |
4607 | create_main_function (fndecl); | |
89ac8ba1 | 4608 | |
4609 | current_procedure_symbol = previous_procedure_symbol; | |
4ee9c684 | 4610 | } |
4611 | ||
7257a5d2 | 4612 | |
4ee9c684 | 4613 | void |
4614 | gfc_generate_constructors (void) | |
4615 | { | |
22d678e8 | 4616 | gcc_assert (gfc_static_ctors == NULL_TREE); |
4ee9c684 | 4617 | #if 0 |
4618 | tree fnname; | |
4619 | tree type; | |
4620 | tree fndecl; | |
4621 | tree decl; | |
4622 | tree tmp; | |
4623 | ||
4624 | if (gfc_static_ctors == NULL_TREE) | |
4625 | return; | |
4626 | ||
db85cc4f | 4627 | fnname = get_file_function_name ("I"); |
e1036019 | 4628 | type = build_function_type_list (void_type_node, NULL_TREE); |
4ee9c684 | 4629 | |
e60a6f7b | 4630 | fndecl = build_decl (input_location, |
4631 | FUNCTION_DECL, fnname, type); | |
4ee9c684 | 4632 | TREE_PUBLIC (fndecl) = 1; |
4633 | ||
e60a6f7b | 4634 | decl = build_decl (input_location, |
4635 | RESULT_DECL, NULL_TREE, void_type_node); | |
540edea7 | 4636 | DECL_ARTIFICIAL (decl) = 1; |
4637 | DECL_IGNORED_P (decl) = 1; | |
4ee9c684 | 4638 | DECL_CONTEXT (decl) = fndecl; |
4639 | DECL_RESULT (fndecl) = decl; | |
4640 | ||
4641 | pushdecl (fndecl); | |
4642 | ||
4643 | current_function_decl = fndecl; | |
4644 | ||
b2c4af5e | 4645 | rest_of_decl_compilation (fndecl, 1, 0); |
4ee9c684 | 4646 | |
b2c4af5e | 4647 | make_decl_rtl (fndecl); |
4ee9c684 | 4648 | |
b31f705b | 4649 | init_function_start (fndecl); |
4ee9c684 | 4650 | |
4ee9c684 | 4651 | pushlevel (0); |
4652 | ||
4653 | for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors)) | |
4654 | { | |
389dd41b | 4655 | tmp = build_call_expr_loc (input_location, |
4656 | TREE_VALUE (gfc_static_ctors), 0); | |
e60a6f7b | 4657 | DECL_SAVED_TREE (fndecl) = build_stmt (input_location, EXPR_STMT, tmp); |
4ee9c684 | 4658 | } |
4659 | ||
e5004242 | 4660 | decl = getdecls (); |
4ee9c684 | 4661 | poplevel (1, 0, 1); |
4662 | ||
4663 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
e5004242 | 4664 | DECL_SAVED_TREE (fndecl) |
4665 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
4666 | DECL_INITIAL (fndecl)); | |
4ee9c684 | 4667 | |
4668 | free_after_parsing (cfun); | |
4669 | free_after_compilation (cfun); | |
4670 | ||
6148a911 | 4671 | tree_rest_of_compilation (fndecl); |
4ee9c684 | 4672 | |
4673 | current_function_decl = NULL_TREE; | |
4674 | #endif | |
4675 | } | |
4676 | ||
9ec7c303 | 4677 | /* Translates a BLOCK DATA program unit. This means emitting the |
4678 | commons contained therein plus their initializations. We also emit | |
4679 | a globally visible symbol to make sure that each BLOCK DATA program | |
4680 | unit remains unique. */ | |
4681 | ||
4682 | void | |
4683 | gfc_generate_block_data (gfc_namespace * ns) | |
4684 | { | |
4685 | tree decl; | |
4686 | tree id; | |
4687 | ||
b31f705b | 4688 | /* Tell the backend the source location of the block data. */ |
4689 | if (ns->proc_name) | |
4690 | gfc_set_backend_locus (&ns->proc_name->declared_at); | |
4691 | else | |
4692 | gfc_set_backend_locus (&gfc_current_locus); | |
4693 | ||
4694 | /* Process the DATA statements. */ | |
9ec7c303 | 4695 | gfc_trans_common (ns); |
4696 | ||
b31f705b | 4697 | /* Create a global symbol with the mane of the block data. This is to |
4698 | generate linker errors if the same name is used twice. It is never | |
4699 | really used. */ | |
9ec7c303 | 4700 | if (ns->proc_name) |
4701 | id = gfc_sym_mangled_function_id (ns->proc_name); | |
4702 | else | |
4703 | id = get_identifier ("__BLOCK_DATA__"); | |
4704 | ||
e60a6f7b | 4705 | decl = build_decl (input_location, |
4706 | VAR_DECL, id, gfc_array_index_type); | |
9ec7c303 | 4707 | TREE_PUBLIC (decl) = 1; |
4708 | TREE_STATIC (decl) = 1; | |
df4d540f | 4709 | DECL_IGNORED_P (decl) = 1; |
9ec7c303 | 4710 | |
4711 | pushdecl (decl); | |
4712 | rest_of_decl_compilation (decl, 1, 0); | |
4713 | } | |
4714 | ||
b549d2a5 | 4715 | |
6a7084d7 | 4716 | /* Process the local variables of a BLOCK construct. */ |
4717 | ||
4718 | void | |
4719 | gfc_process_block_locals (gfc_namespace* ns) | |
4720 | { | |
4721 | tree decl; | |
4722 | ||
4723 | gcc_assert (saved_local_decls == NULL_TREE); | |
4724 | generate_local_vars (ns); | |
4725 | ||
4726 | decl = saved_local_decls; | |
4727 | while (decl) | |
4728 | { | |
4729 | tree next; | |
4730 | ||
1767a056 | 4731 | next = DECL_CHAIN (decl); |
4732 | DECL_CHAIN (decl) = NULL_TREE; | |
6a7084d7 | 4733 | pushdecl (decl); |
4734 | decl = next; | |
4735 | } | |
4736 | saved_local_decls = NULL_TREE; | |
4737 | } | |
4738 | ||
4739 | ||
4ee9c684 | 4740 | #include "gt-fortran-trans-decl.h" |