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Commit | Line | Data |
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6de9cd9a | 1 | /* Backend function setup |
975d3303 | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
66647d44 | 3 | Free Software Foundation, Inc. |
6de9cd9a DN |
4 | Contributed by Paul Brook |
5 | ||
9fc4d79b | 6 | This file is part of GCC. |
6de9cd9a | 7 | |
9fc4d79b TS |
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 | |
d234d788 | 10 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 11 | version. |
6de9cd9a | 12 | |
9fc4d79b TS |
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. | |
6de9cd9a DN |
17 | |
18 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a DN |
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" | |
d347d97e | 27 | #include "tm.h" |
6de9cd9a DN |
28 | #include "tree.h" |
29 | #include "tree-dump.h" | |
a48ba7e1 | 30 | #include "gimple.h" /* For create_tmp_var_raw. */ |
6de9cd9a | 31 | #include "ggc.h" |
c829d016 TB |
32 | #include "diagnostic-core.h" /* For internal_error. */ |
33 | #include "toplev.h" /* For announce_function. */ | |
d347d97e | 34 | #include "output.h" /* For decl_default_tls_model. */ |
6de9cd9a DN |
35 | #include "target.h" |
36 | #include "function.h" | |
6de9cd9a DN |
37 | #include "flags.h" |
38 | #include "cgraph.h" | |
a64f5186 | 39 | #include "debug.h" |
6de9cd9a | 40 | #include "gfortran.h" |
77f2a970 | 41 | #include "pointer-set.h" |
b7e75771 | 42 | #include "constructor.h" |
6de9cd9a DN |
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; | |
5f20c93a | 56 | static GTY(()) tree parent_fake_result_decl; |
6de9cd9a | 57 | |
6de9cd9a DN |
58 | |
59 | /* Holds the variable DECLs for the current function. */ | |
60 | ||
417ab240 JJ |
61 | static GTY(()) tree saved_function_decls; |
62 | static GTY(()) tree saved_parent_function_decls; | |
6de9cd9a | 63 | |
77f2a970 JJ |
64 | static struct pointer_set_t *nonlocal_dummy_decl_pset; |
65 | static GTY(()) tree nonlocal_dummy_decls; | |
6de9cd9a | 66 | |
9abe5e56 DK |
67 | /* Holds the variable DECLs that are locals. */ |
68 | ||
69 | static GTY(()) tree saved_local_decls; | |
70 | ||
6de9cd9a DN |
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 | ||
d74d8807 DK |
76 | /* The currently processed procedure symbol. */ |
77 | static gfc_symbol* current_procedure_symbol = NULL; | |
78 | ||
6de9cd9a DN |
79 | |
80 | /* List of static constructor functions. */ | |
81 | ||
82 | tree gfc_static_ctors; | |
83 | ||
84 | ||
85 | /* Function declarations for builtin library functions. */ | |
86 | ||
6de9cd9a DN |
87 | tree gfor_fndecl_pause_numeric; |
88 | tree gfor_fndecl_pause_string; | |
89 | tree gfor_fndecl_stop_numeric; | |
90 | tree gfor_fndecl_stop_string; | |
6d1b0f92 | 91 | tree gfor_fndecl_error_stop_numeric; |
d0a4a61c | 92 | tree gfor_fndecl_error_stop_string; |
6de9cd9a | 93 | tree gfor_fndecl_runtime_error; |
f96d606f | 94 | tree gfor_fndecl_runtime_error_at; |
0d52899f | 95 | tree gfor_fndecl_runtime_warning_at; |
1529b8d9 | 96 | tree gfor_fndecl_os_error; |
f96d606f | 97 | tree gfor_fndecl_generate_error; |
092231a8 | 98 | tree gfor_fndecl_set_args; |
944b8b35 | 99 | tree gfor_fndecl_set_fpe; |
68d2e027 | 100 | tree gfor_fndecl_set_options; |
eaa90d25 | 101 | tree gfor_fndecl_set_convert; |
d67ab5ee | 102 | tree gfor_fndecl_set_record_marker; |
07b3bbf2 | 103 | tree gfor_fndecl_set_max_subrecord_length; |
35059811 FXC |
104 | tree gfor_fndecl_ctime; |
105 | tree gfor_fndecl_fdate; | |
25fc05eb | 106 | tree gfor_fndecl_ttynam; |
6de9cd9a DN |
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 | ||
644cb69f | 115 | gfc_powdecl_list gfor_fndecl_math_powi[4][3]; |
6de9cd9a DN |
116 | tree gfor_fndecl_math_ishftc4; |
117 | tree gfor_fndecl_math_ishftc8; | |
644cb69f | 118 | tree gfor_fndecl_math_ishftc16; |
6de9cd9a DN |
119 | |
120 | ||
121 | /* String functions. */ | |
122 | ||
6de9cd9a DN |
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; | |
2263c775 | 130 | tree gfor_fndecl_string_minmax; |
6de9cd9a DN |
131 | tree gfor_fndecl_adjustl; |
132 | tree gfor_fndecl_adjustr; | |
d393bbd7 | 133 | tree gfor_fndecl_select_string; |
374929b2 FXC |
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; | |
d393bbd7 FXC |
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; | |
6de9cd9a DN |
150 | |
151 | ||
152 | /* Other misc. runtime library functions. */ | |
6de9cd9a DN |
153 | tree gfor_fndecl_size0; |
154 | tree gfor_fndecl_size1; | |
b41b2534 | 155 | tree gfor_fndecl_iargc; |
6de9cd9a | 156 | |
a39fafac FXC |
157 | /* Intrinsic functions implemented in Fortran. */ |
158 | tree gfor_fndecl_sc_kind; | |
6de9cd9a DN |
159 | tree gfor_fndecl_si_kind; |
160 | tree gfor_fndecl_sr_kind; | |
161 | ||
5a0aad31 FXC |
162 | /* BLAS gemm functions. */ |
163 | tree gfor_fndecl_sgemm; | |
164 | tree gfor_fndecl_dgemm; | |
165 | tree gfor_fndecl_cgemm; | |
166 | tree gfor_fndecl_zgemm; | |
167 | ||
6de9cd9a DN |
168 | |
169 | static void | |
170 | gfc_add_decl_to_parent_function (tree decl) | |
171 | { | |
6e45f57b | 172 | gcc_assert (decl); |
6de9cd9a DN |
173 | DECL_CONTEXT (decl) = DECL_CONTEXT (current_function_decl); |
174 | DECL_NONLOCAL (decl) = 1; | |
910ad8de | 175 | DECL_CHAIN (decl) = saved_parent_function_decls; |
6de9cd9a DN |
176 | saved_parent_function_decls = decl; |
177 | } | |
178 | ||
179 | void | |
180 | gfc_add_decl_to_function (tree decl) | |
181 | { | |
6e45f57b | 182 | gcc_assert (decl); |
6de9cd9a DN |
183 | TREE_USED (decl) = 1; |
184 | DECL_CONTEXT (decl) = current_function_decl; | |
910ad8de | 185 | DECL_CHAIN (decl) = saved_function_decls; |
6de9cd9a DN |
186 | saved_function_decls = decl; |
187 | } | |
188 | ||
9abe5e56 DK |
189 | static void |
190 | add_decl_as_local (tree decl) | |
191 | { | |
192 | gcc_assert (decl); | |
193 | TREE_USED (decl) = 1; | |
194 | DECL_CONTEXT (decl) = current_function_decl; | |
910ad8de | 195 | DECL_CHAIN (decl) = saved_local_decls; |
9abe5e56 DK |
196 | saved_local_decls = decl; |
197 | } | |
198 | ||
6de9cd9a | 199 | |
c006df4e SB |
200 | /* Build a backend label declaration. Set TREE_USED for named labels. |
201 | The context of the label is always the current_function_decl. All | |
202 | labels are marked artificial. */ | |
6de9cd9a DN |
203 | |
204 | tree | |
205 | gfc_build_label_decl (tree label_id) | |
206 | { | |
207 | /* 2^32 temporaries should be enough. */ | |
208 | static unsigned int tmp_num = 1; | |
209 | tree label_decl; | |
210 | char *label_name; | |
211 | ||
212 | if (label_id == NULL_TREE) | |
213 | { | |
214 | /* Build an internal label name. */ | |
215 | ASM_FORMAT_PRIVATE_NAME (label_name, "L", tmp_num++); | |
216 | label_id = get_identifier (label_name); | |
217 | } | |
218 | else | |
219 | label_name = NULL; | |
220 | ||
221 | /* Build the LABEL_DECL node. Labels have no type. */ | |
c2255bc4 AH |
222 | label_decl = build_decl (input_location, |
223 | LABEL_DECL, label_id, void_type_node); | |
6de9cd9a DN |
224 | DECL_CONTEXT (label_decl) = current_function_decl; |
225 | DECL_MODE (label_decl) = VOIDmode; | |
226 | ||
c006df4e SB |
227 | /* We always define the label as used, even if the original source |
228 | file never references the label. We don't want all kinds of | |
229 | spurious warnings for old-style Fortran code with too many | |
230 | labels. */ | |
231 | TREE_USED (label_decl) = 1; | |
6de9cd9a | 232 | |
c006df4e | 233 | DECL_ARTIFICIAL (label_decl) = 1; |
6de9cd9a DN |
234 | return label_decl; |
235 | } | |
236 | ||
237 | ||
c8cc8542 PB |
238 | /* Set the backend source location of a decl. */ |
239 | ||
240 | void | |
241 | gfc_set_decl_location (tree decl, locus * loc) | |
242 | { | |
c8cc8542 | 243 | DECL_SOURCE_LOCATION (decl) = loc->lb->location; |
c8cc8542 PB |
244 | } |
245 | ||
246 | ||
6de9cd9a DN |
247 | /* Return the backend label declaration for a given label structure, |
248 | or create it if it doesn't exist yet. */ | |
249 | ||
250 | tree | |
251 | gfc_get_label_decl (gfc_st_label * lp) | |
252 | { | |
6de9cd9a DN |
253 | if (lp->backend_decl) |
254 | return lp->backend_decl; | |
255 | else | |
256 | { | |
257 | char label_name[GFC_MAX_SYMBOL_LEN + 1]; | |
258 | tree label_decl; | |
259 | ||
260 | /* Validate the label declaration from the front end. */ | |
6e45f57b | 261 | gcc_assert (lp != NULL && lp->value <= MAX_LABEL_VALUE); |
6de9cd9a DN |
262 | |
263 | /* Build a mangled name for the label. */ | |
264 | sprintf (label_name, "__label_%.6d", lp->value); | |
265 | ||
266 | /* Build the LABEL_DECL node. */ | |
267 | label_decl = gfc_build_label_decl (get_identifier (label_name)); | |
268 | ||
269 | /* Tell the debugger where the label came from. */ | |
f8d0aee5 | 270 | if (lp->value <= MAX_LABEL_VALUE) /* An internal label. */ |
c8cc8542 | 271 | gfc_set_decl_location (label_decl, &lp->where); |
6de9cd9a DN |
272 | else |
273 | DECL_ARTIFICIAL (label_decl) = 1; | |
274 | ||
275 | /* Store the label in the label list and return the LABEL_DECL. */ | |
276 | lp->backend_decl = label_decl; | |
277 | return label_decl; | |
278 | } | |
279 | } | |
280 | ||
281 | ||
282 | /* Convert a gfc_symbol to an identifier of the same name. */ | |
283 | ||
284 | static tree | |
285 | gfc_sym_identifier (gfc_symbol * sym) | |
286 | { | |
a7ad6c2d TB |
287 | if (sym->attr.is_main_program && strcmp (sym->name, "main") == 0) |
288 | return (get_identifier ("MAIN__")); | |
289 | else | |
290 | return (get_identifier (sym->name)); | |
6de9cd9a DN |
291 | } |
292 | ||
293 | ||
294 | /* Construct mangled name from symbol name. */ | |
295 | ||
296 | static tree | |
297 | gfc_sym_mangled_identifier (gfc_symbol * sym) | |
298 | { | |
299 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
300 | ||
a8b3b0b6 CR |
301 | /* Prevent the mangling of identifiers that have an assigned |
302 | binding label (mainly those that are bind(c)). */ | |
303 | if (sym->attr.is_bind_c == 1 | |
304 | && sym->binding_label[0] != '\0') | |
305 | return get_identifier(sym->binding_label); | |
306 | ||
cb9e4f55 | 307 | if (sym->module == NULL) |
6de9cd9a DN |
308 | return gfc_sym_identifier (sym); |
309 | else | |
310 | { | |
9998ef84 | 311 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
6de9cd9a DN |
312 | return get_identifier (name); |
313 | } | |
314 | } | |
315 | ||
316 | ||
317 | /* Construct mangled function name from symbol name. */ | |
318 | ||
319 | static tree | |
320 | gfc_sym_mangled_function_id (gfc_symbol * sym) | |
321 | { | |
322 | int has_underscore; | |
323 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
324 | ||
a8b3b0b6 CR |
325 | /* It may be possible to simply use the binding label if it's |
326 | provided, and remove the other checks. Then we could use it | |
327 | for other things if we wished. */ | |
328 | if ((sym->attr.is_bind_c == 1 || sym->attr.is_iso_c == 1) && | |
329 | sym->binding_label[0] != '\0') | |
330 | /* use the binding label rather than the mangled name */ | |
331 | return get_identifier (sym->binding_label); | |
332 | ||
cb9e4f55 | 333 | if (sym->module == NULL || sym->attr.proc == PROC_EXTERNAL |
c89686a8 PT |
334 | || (sym->module != NULL && (sym->attr.external |
335 | || sym->attr.if_source == IFSRC_IFBODY))) | |
6de9cd9a | 336 | { |
ecf24057 FXC |
337 | /* Main program is mangled into MAIN__. */ |
338 | if (sym->attr.is_main_program) | |
339 | return get_identifier ("MAIN__"); | |
340 | ||
341 | /* Intrinsic procedures are never mangled. */ | |
342 | if (sym->attr.proc == PROC_INTRINSIC) | |
6de9cd9a DN |
343 | return get_identifier (sym->name); |
344 | ||
345 | if (gfc_option.flag_underscoring) | |
346 | { | |
347 | has_underscore = strchr (sym->name, '_') != 0; | |
348 | if (gfc_option.flag_second_underscore && has_underscore) | |
349 | snprintf (name, sizeof name, "%s__", sym->name); | |
350 | else | |
351 | snprintf (name, sizeof name, "%s_", sym->name); | |
352 | return get_identifier (name); | |
353 | } | |
354 | else | |
355 | return get_identifier (sym->name); | |
356 | } | |
357 | else | |
358 | { | |
9998ef84 | 359 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
6de9cd9a DN |
360 | return get_identifier (name); |
361 | } | |
362 | } | |
363 | ||
364 | ||
43ce5e52 FXC |
365 | void |
366 | gfc_set_decl_assembler_name (tree decl, tree name) | |
367 | { | |
368 | tree target_mangled = targetm.mangle_decl_assembler_name (decl, name); | |
369 | SET_DECL_ASSEMBLER_NAME (decl, target_mangled); | |
370 | } | |
371 | ||
372 | ||
bae88af6 TS |
373 | /* Returns true if a variable of specified size should go on the stack. */ |
374 | ||
375 | int | |
376 | gfc_can_put_var_on_stack (tree size) | |
377 | { | |
378 | unsigned HOST_WIDE_INT low; | |
379 | ||
380 | if (!INTEGER_CST_P (size)) | |
381 | return 0; | |
382 | ||
383 | if (gfc_option.flag_max_stack_var_size < 0) | |
384 | return 1; | |
385 | ||
386 | if (TREE_INT_CST_HIGH (size) != 0) | |
387 | return 0; | |
388 | ||
389 | low = TREE_INT_CST_LOW (size); | |
390 | if (low > (unsigned HOST_WIDE_INT) gfc_option.flag_max_stack_var_size) | |
391 | return 0; | |
392 | ||
393 | /* TODO: Set a per-function stack size limit. */ | |
394 | ||
395 | return 1; | |
396 | } | |
397 | ||
398 | ||
b122dc6a JJ |
399 | /* gfc_finish_cray_pointee sets DECL_VALUE_EXPR for a Cray pointee to |
400 | an expression involving its corresponding pointer. There are | |
401 | 2 cases; one for variable size arrays, and one for everything else, | |
402 | because variable-sized arrays require one fewer level of | |
403 | indirection. */ | |
404 | ||
405 | static void | |
406 | gfc_finish_cray_pointee (tree decl, gfc_symbol *sym) | |
407 | { | |
408 | tree ptr_decl = gfc_get_symbol_decl (sym->cp_pointer); | |
409 | tree value; | |
410 | ||
411 | /* Parameters need to be dereferenced. */ | |
412 | if (sym->cp_pointer->attr.dummy) | |
db3927fb AH |
413 | ptr_decl = build_fold_indirect_ref_loc (input_location, |
414 | ptr_decl); | |
b122dc6a JJ |
415 | |
416 | /* Check to see if we're dealing with a variable-sized array. */ | |
417 | if (sym->attr.dimension | |
418 | && TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE) | |
419 | { | |
831d7813 | 420 | /* These decls will be dereferenced later, so we don't dereference |
b122dc6a JJ |
421 | them here. */ |
422 | value = convert (TREE_TYPE (decl), ptr_decl); | |
423 | } | |
424 | else | |
425 | { | |
426 | ptr_decl = convert (build_pointer_type (TREE_TYPE (decl)), | |
427 | ptr_decl); | |
db3927fb AH |
428 | value = build_fold_indirect_ref_loc (input_location, |
429 | ptr_decl); | |
b122dc6a JJ |
430 | } |
431 | ||
432 | SET_DECL_VALUE_EXPR (decl, value); | |
433 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
6c7a4dfd | 434 | GFC_DECL_CRAY_POINTEE (decl) = 1; |
b122dc6a JJ |
435 | /* This is a fake variable just for debugging purposes. */ |
436 | TREE_ASM_WRITTEN (decl) = 1; | |
437 | } | |
438 | ||
439 | ||
faf28b3a | 440 | /* Finish processing of a declaration without an initial value. */ |
6de9cd9a DN |
441 | |
442 | static void | |
faf28b3a | 443 | gfc_finish_decl (tree decl) |
6de9cd9a | 444 | { |
faf28b3a TS |
445 | gcc_assert (TREE_CODE (decl) == PARM_DECL |
446 | || DECL_INITIAL (decl) == NULL_TREE); | |
6de9cd9a | 447 | |
faf28b3a TS |
448 | if (TREE_CODE (decl) != VAR_DECL) |
449 | return; | |
6de9cd9a | 450 | |
faf28b3a TS |
451 | if (DECL_SIZE (decl) == NULL_TREE |
452 | && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE) | |
453 | layout_decl (decl, 0); | |
454 | ||
455 | /* A few consistency checks. */ | |
456 | /* A static variable with an incomplete type is an error if it is | |
457 | initialized. Also if it is not file scope. Otherwise, let it | |
458 | through, but if it is not `extern' then it may cause an error | |
459 | message later. */ | |
460 | /* An automatic variable with an incomplete type is an error. */ | |
461 | ||
462 | /* We should know the storage size. */ | |
463 | gcc_assert (DECL_SIZE (decl) != NULL_TREE | |
464 | || (TREE_STATIC (decl) | |
465 | ? (!DECL_INITIAL (decl) || !DECL_CONTEXT (decl)) | |
466 | : DECL_EXTERNAL (decl))); | |
467 | ||
468 | /* The storage size should be constant. */ | |
469 | gcc_assert ((!DECL_EXTERNAL (decl) && !TREE_STATIC (decl)) | |
470 | || !DECL_SIZE (decl) | |
471 | || TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST); | |
6de9cd9a DN |
472 | } |
473 | ||
474 | ||
475 | /* Apply symbol attributes to a variable, and add it to the function scope. */ | |
476 | ||
477 | static void | |
478 | gfc_finish_var_decl (tree decl, gfc_symbol * sym) | |
479 | { | |
7b901ac4 | 480 | tree new_type; |
f8d0aee5 | 481 | /* TREE_ADDRESSABLE means the address of this variable is actually needed. |
6de9cd9a DN |
482 | This is the equivalent of the TARGET variables. |
483 | We also need to set this if the variable is passed by reference in a | |
484 | CALL statement. */ | |
83d890b9 | 485 | |
b122dc6a | 486 | /* Set DECL_VALUE_EXPR for Cray Pointees. */ |
83d890b9 | 487 | if (sym->attr.cray_pointee) |
b122dc6a | 488 | gfc_finish_cray_pointee (decl, sym); |
83d890b9 | 489 | |
6de9cd9a DN |
490 | if (sym->attr.target) |
491 | TREE_ADDRESSABLE (decl) = 1; | |
492 | /* If it wasn't used we wouldn't be getting it. */ | |
493 | TREE_USED (decl) = 1; | |
494 | ||
495 | /* Chain this decl to the pending declarations. Don't do pushdecl() | |
496 | because this would add them to the current scope rather than the | |
497 | function scope. */ | |
498 | if (current_function_decl != NULL_TREE) | |
499 | { | |
d48734ef | 500 | if (sym->ns->proc_name->backend_decl == current_function_decl |
9abe5e56 | 501 | || sym->result == sym) |
6de9cd9a | 502 | gfc_add_decl_to_function (decl); |
9abe5e56 DK |
503 | else if (sym->ns->proc_name->attr.flavor == FL_LABEL) |
504 | /* This is a BLOCK construct. */ | |
505 | add_decl_as_local (decl); | |
6de9cd9a DN |
506 | else |
507 | gfc_add_decl_to_parent_function (decl); | |
508 | } | |
509 | ||
b122dc6a JJ |
510 | if (sym->attr.cray_pointee) |
511 | return; | |
512 | ||
a8b3b0b6 CR |
513 | if(sym->attr.is_bind_c == 1) |
514 | { | |
515 | /* We need to put variables that are bind(c) into the common | |
516 | segment of the object file, because this is what C would do. | |
517 | gfortran would typically put them in either the BSS or | |
518 | initialized data segments, and only mark them as common if | |
519 | they were part of common blocks. However, if they are not put | |
93c71688 | 520 | into common space, then C cannot initialize global Fortran |
a8b3b0b6 CR |
521 | variables that it interoperates with and the draft says that |
522 | either Fortran or C should be able to initialize it (but not | |
523 | both, of course.) (J3/04-007, section 15.3). */ | |
524 | TREE_PUBLIC(decl) = 1; | |
525 | DECL_COMMON(decl) = 1; | |
526 | } | |
527 | ||
6de9cd9a DN |
528 | /* If a variable is USE associated, it's always external. */ |
529 | if (sym->attr.use_assoc) | |
530 | { | |
531 | DECL_EXTERNAL (decl) = 1; | |
532 | TREE_PUBLIC (decl) = 1; | |
533 | } | |
cb9e4f55 | 534 | else if (sym->module && !sym->attr.result && !sym->attr.dummy) |
6de9cd9a | 535 | { |
adf3ed3f | 536 | /* TODO: Don't set sym->module for result or dummy variables. */ |
d48734ef | 537 | gcc_assert (current_function_decl == NULL_TREE || sym->result == sym); |
6de9cd9a DN |
538 | /* This is the declaration of a module variable. */ |
539 | TREE_PUBLIC (decl) = 1; | |
540 | TREE_STATIC (decl) = 1; | |
541 | } | |
542 | ||
b7b184a8 PT |
543 | /* Derived types are a bit peculiar because of the possibility of |
544 | a default initializer; this must be applied each time the variable | |
545 | comes into scope it therefore need not be static. These variables | |
546 | are SAVE_NONE but have an initializer. Otherwise explicitly | |
df2fba9e | 547 | initialized variables are SAVE_IMPLICIT and explicitly saved are |
b7b184a8 PT |
548 | SAVE_EXPLICIT. */ |
549 | if (!sym->attr.use_assoc | |
550 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
551 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
6de9cd9a | 552 | TREE_STATIC (decl) = 1; |
775e6c3a TB |
553 | |
554 | if (sym->attr.volatile_) | |
555 | { | |
775e6c3a | 556 | TREE_THIS_VOLATILE (decl) = 1; |
7b901ac4 KG |
557 | new_type = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE); |
558 | TREE_TYPE (decl) = new_type; | |
775e6c3a TB |
559 | } |
560 | ||
6de9cd9a DN |
561 | /* Keep variables larger than max-stack-var-size off stack. */ |
562 | if (!sym->ns->proc_name->attr.recursive | |
563 | && INTEGER_CST_P (DECL_SIZE_UNIT (decl)) | |
9eccb94d JJ |
564 | && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) |
565 | /* Put variable length auto array pointers always into stack. */ | |
566 | && (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE | |
567 | || sym->attr.dimension == 0 | |
568 | || sym->as->type != AS_EXPLICIT | |
569 | || sym->attr.pointer | |
570 | || sym->attr.allocatable) | |
571 | && !DECL_ARTIFICIAL (decl)) | |
6de9cd9a | 572 | TREE_STATIC (decl) = 1; |
6c7a4dfd JJ |
573 | |
574 | /* Handle threadprivate variables. */ | |
8893239d | 575 | if (sym->attr.threadprivate |
6c7a4dfd JJ |
576 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) |
577 | DECL_TLS_MODEL (decl) = decl_default_tls_model (decl); | |
10174ddf MM |
578 | |
579 | if (!sym->attr.target | |
580 | && !sym->attr.pointer | |
b3aefde2 | 581 | && !sym->attr.cray_pointee |
9b87db3c MM |
582 | && !sym->attr.proc_pointer) |
583 | DECL_RESTRICTED_P (decl) = 1; | |
6de9cd9a DN |
584 | } |
585 | ||
586 | ||
587 | /* Allocate the lang-specific part of a decl. */ | |
588 | ||
589 | void | |
590 | gfc_allocate_lang_decl (tree decl) | |
591 | { | |
a9429e29 LB |
592 | DECL_LANG_SPECIFIC (decl) = ggc_alloc_cleared_lang_decl(sizeof |
593 | (struct lang_decl)); | |
6de9cd9a DN |
594 | } |
595 | ||
596 | /* Remember a symbol to generate initialization/cleanup code at function | |
597 | entry/exit. */ | |
598 | ||
599 | static void | |
600 | gfc_defer_symbol_init (gfc_symbol * sym) | |
601 | { | |
602 | gfc_symbol *p; | |
603 | gfc_symbol *last; | |
604 | gfc_symbol *head; | |
605 | ||
606 | /* Don't add a symbol twice. */ | |
607 | if (sym->tlink) | |
608 | return; | |
609 | ||
610 | last = head = sym->ns->proc_name; | |
611 | p = last->tlink; | |
612 | ||
613 | /* Make sure that setup code for dummy variables which are used in the | |
614 | setup of other variables is generated first. */ | |
615 | if (sym->attr.dummy) | |
616 | { | |
617 | /* Find the first dummy arg seen after us, or the first non-dummy arg. | |
618 | This is a circular list, so don't go past the head. */ | |
619 | while (p != head | |
620 | && (!p->attr.dummy || p->dummy_order > sym->dummy_order)) | |
621 | { | |
622 | last = p; | |
623 | p = p->tlink; | |
624 | } | |
625 | } | |
626 | /* Insert in between last and p. */ | |
627 | last->tlink = sym; | |
628 | sym->tlink = p; | |
629 | } | |
630 | ||
631 | ||
632 | /* Create an array index type variable with function scope. */ | |
633 | ||
634 | static tree | |
635 | create_index_var (const char * pfx, int nest) | |
636 | { | |
637 | tree decl; | |
638 | ||
639 | decl = gfc_create_var_np (gfc_array_index_type, pfx); | |
640 | if (nest) | |
641 | gfc_add_decl_to_parent_function (decl); | |
642 | else | |
643 | gfc_add_decl_to_function (decl); | |
644 | return decl; | |
645 | } | |
646 | ||
647 | ||
648 | /* Create variables to hold all the non-constant bits of info for a | |
649 | descriptorless array. Remember these in the lang-specific part of the | |
650 | type. */ | |
651 | ||
652 | static void | |
653 | gfc_build_qualified_array (tree decl, gfc_symbol * sym) | |
654 | { | |
655 | tree type; | |
656 | int dim; | |
657 | int nest; | |
52bf62f9 | 658 | gfc_namespace* procns; |
6de9cd9a DN |
659 | |
660 | type = TREE_TYPE (decl); | |
661 | ||
662 | /* We just use the descriptor, if there is one. */ | |
663 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
664 | return; | |
665 | ||
6e45f57b | 666 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
52bf62f9 DK |
667 | procns = gfc_find_proc_namespace (sym->ns); |
668 | nest = (procns->proc_name->backend_decl != current_function_decl) | |
6de9cd9a DN |
669 | && !sym->attr.contained; |
670 | ||
671 | for (dim = 0; dim < GFC_TYPE_ARRAY_RANK (type); dim++) | |
672 | { | |
673 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
01306727 FXC |
674 | { |
675 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
676 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
677 | } | |
aa9c57ec | 678 | /* Don't try to use the unknown bound for assumed shape arrays. */ |
6de9cd9a DN |
679 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE |
680 | && (sym->as->type != AS_ASSUMED_SIZE | |
681 | || dim < GFC_TYPE_ARRAY_RANK (type) - 1)) | |
01306727 FXC |
682 | { |
683 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
684 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
685 | } | |
6de9cd9a DN |
686 | |
687 | if (GFC_TYPE_ARRAY_STRIDE (type, dim) == NULL_TREE) | |
01306727 FXC |
688 | { |
689 | GFC_TYPE_ARRAY_STRIDE (type, dim) = create_index_var ("stride", nest); | |
690 | TREE_NO_WARNING (GFC_TYPE_ARRAY_STRIDE (type, dim)) = 1; | |
691 | } | |
6de9cd9a DN |
692 | } |
693 | if (GFC_TYPE_ARRAY_OFFSET (type) == NULL_TREE) | |
694 | { | |
695 | GFC_TYPE_ARRAY_OFFSET (type) = gfc_create_var_np (gfc_array_index_type, | |
696 | "offset"); | |
01306727 FXC |
697 | TREE_NO_WARNING (GFC_TYPE_ARRAY_OFFSET (type)) = 1; |
698 | ||
6de9cd9a DN |
699 | if (nest) |
700 | gfc_add_decl_to_parent_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
701 | else | |
702 | gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
703 | } | |
417ab240 JJ |
704 | |
705 | if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE | |
706 | && sym->as->type != AS_ASSUMED_SIZE) | |
01306727 FXC |
707 | { |
708 | GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest); | |
709 | TREE_NO_WARNING (GFC_TYPE_ARRAY_SIZE (type)) = 1; | |
710 | } | |
417ab240 JJ |
711 | |
712 | if (POINTER_TYPE_P (type)) | |
713 | { | |
714 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type))); | |
715 | gcc_assert (TYPE_LANG_SPECIFIC (type) | |
716 | == TYPE_LANG_SPECIFIC (TREE_TYPE (type))); | |
717 | type = TREE_TYPE (type); | |
718 | } | |
719 | ||
720 | if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type)) | |
721 | { | |
722 | tree size, range; | |
723 | ||
bc98ed60 TB |
724 | size = fold_build2_loc (input_location, MINUS_EXPR, gfc_array_index_type, |
725 | GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node); | |
417ab240 JJ |
726 | range = build_range_type (gfc_array_index_type, gfc_index_zero_node, |
727 | size); | |
728 | TYPE_DOMAIN (type) = range; | |
729 | layout_type (type); | |
730 | } | |
25c29c56 | 731 | |
25c29c56 JJ |
732 | if (TYPE_NAME (type) != NULL_TREE |
733 | && GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1) != NULL_TREE | |
734 | && TREE_CODE (GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1)) == VAR_DECL) | |
735 | { | |
736 | tree gtype = DECL_ORIGINAL_TYPE (TYPE_NAME (type)); | |
737 | ||
738 | for (dim = 0; dim < sym->as->rank - 1; dim++) | |
739 | { | |
740 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
741 | gtype = TREE_TYPE (gtype); | |
742 | } | |
743 | gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE); | |
744 | if (TYPE_MAX_VALUE (TYPE_DOMAIN (gtype)) == NULL) | |
745 | TYPE_NAME (type) = NULL_TREE; | |
746 | } | |
747 | ||
748 | if (TYPE_NAME (type) == NULL_TREE) | |
749 | { | |
750 | tree gtype = TREE_TYPE (type), rtype, type_decl; | |
751 | ||
752 | for (dim = sym->as->rank - 1; dim >= 0; dim--) | |
753 | { | |
fcd3c5a9 JJ |
754 | tree lbound, ubound; |
755 | lbound = GFC_TYPE_ARRAY_LBOUND (type, dim); | |
756 | ubound = GFC_TYPE_ARRAY_UBOUND (type, dim); | |
757 | rtype = build_range_type (gfc_array_index_type, lbound, ubound); | |
25c29c56 | 758 | gtype = build_array_type (gtype, rtype); |
e429bb49 JJ |
759 | /* Ensure the bound variables aren't optimized out at -O0. |
760 | For -O1 and above they often will be optimized out, but | |
cd3f04c8 JJ |
761 | can be tracked by VTA. Also set DECL_NAMELESS, so that |
762 | the artificial lbound.N or ubound.N DECL_NAME doesn't | |
763 | end up in debug info. */ | |
fcd3c5a9 JJ |
764 | if (lbound && TREE_CODE (lbound) == VAR_DECL |
765 | && DECL_ARTIFICIAL (lbound) && DECL_IGNORED_P (lbound)) | |
766 | { | |
767 | if (DECL_NAME (lbound) | |
768 | && strstr (IDENTIFIER_POINTER (DECL_NAME (lbound)), | |
769 | "lbound") != 0) | |
cd3f04c8 | 770 | DECL_NAMELESS (lbound) = 1; |
fcd3c5a9 JJ |
771 | DECL_IGNORED_P (lbound) = 0; |
772 | } | |
773 | if (ubound && TREE_CODE (ubound) == VAR_DECL | |
774 | && DECL_ARTIFICIAL (ubound) && DECL_IGNORED_P (ubound)) | |
775 | { | |
776 | if (DECL_NAME (ubound) | |
777 | && strstr (IDENTIFIER_POINTER (DECL_NAME (ubound)), | |
778 | "ubound") != 0) | |
cd3f04c8 | 779 | DECL_NAMELESS (ubound) = 1; |
fcd3c5a9 JJ |
780 | DECL_IGNORED_P (ubound) = 0; |
781 | } | |
25c29c56 | 782 | } |
c2255bc4 AH |
783 | TYPE_NAME (type) = type_decl = build_decl (input_location, |
784 | TYPE_DECL, NULL, gtype); | |
25c29c56 JJ |
785 | DECL_ORIGINAL_TYPE (type_decl) = gtype; |
786 | } | |
6de9cd9a DN |
787 | } |
788 | ||
789 | ||
790 | /* For some dummy arguments we don't use the actual argument directly. | |
bae88af6 | 791 | Instead we create a local decl and use that. This allows us to perform |
6de9cd9a DN |
792 | initialization, and construct full type information. */ |
793 | ||
794 | static tree | |
795 | gfc_build_dummy_array_decl (gfc_symbol * sym, tree dummy) | |
796 | { | |
797 | tree decl; | |
798 | tree type; | |
799 | gfc_array_spec *as; | |
800 | char *name; | |
dcfef7d4 | 801 | gfc_packed packed; |
6de9cd9a DN |
802 | int n; |
803 | bool known_size; | |
804 | ||
805 | if (sym->attr.pointer || sym->attr.allocatable) | |
806 | return dummy; | |
807 | ||
808 | /* Add to list of variables if not a fake result variable. */ | |
809 | if (sym->attr.result || sym->attr.dummy) | |
810 | gfc_defer_symbol_init (sym); | |
811 | ||
812 | type = TREE_TYPE (dummy); | |
6e45f57b | 813 | gcc_assert (TREE_CODE (dummy) == PARM_DECL |
6de9cd9a DN |
814 | && POINTER_TYPE_P (type)); |
815 | ||
f8d0aee5 | 816 | /* Do we know the element size? */ |
6de9cd9a | 817 | known_size = sym->ts.type != BT_CHARACTER |
bc21d315 | 818 | || INTEGER_CST_P (sym->ts.u.cl->backend_decl); |
6de9cd9a DN |
819 | |
820 | if (known_size && !GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (type))) | |
821 | { | |
822 | /* For descriptorless arrays with known element size the actual | |
823 | argument is sufficient. */ | |
6e45f57b | 824 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
6de9cd9a DN |
825 | gfc_build_qualified_array (dummy, sym); |
826 | return dummy; | |
827 | } | |
828 | ||
829 | type = TREE_TYPE (type); | |
830 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
831 | { | |
fa951694 | 832 | /* Create a descriptorless array pointer. */ |
6de9cd9a | 833 | as = sym->as; |
dcfef7d4 | 834 | packed = PACKED_NO; |
1c3339af FXC |
835 | |
836 | /* Even when -frepack-arrays is used, symbols with TARGET attribute | |
837 | are not repacked. */ | |
838 | if (!gfc_option.flag_repack_arrays || sym->attr.target) | |
6de9cd9a DN |
839 | { |
840 | if (as->type == AS_ASSUMED_SIZE) | |
dcfef7d4 | 841 | packed = PACKED_FULL; |
6de9cd9a DN |
842 | } |
843 | else | |
844 | { | |
845 | if (as->type == AS_EXPLICIT) | |
846 | { | |
dcfef7d4 | 847 | packed = PACKED_FULL; |
6de9cd9a DN |
848 | for (n = 0; n < as->rank; n++) |
849 | { | |
850 | if (!(as->upper[n] | |
851 | && as->lower[n] | |
852 | && as->upper[n]->expr_type == EXPR_CONSTANT | |
853 | && as->lower[n]->expr_type == EXPR_CONSTANT)) | |
dcfef7d4 | 854 | packed = PACKED_PARTIAL; |
6de9cd9a DN |
855 | } |
856 | } | |
857 | else | |
dcfef7d4 | 858 | packed = PACKED_PARTIAL; |
6de9cd9a DN |
859 | } |
860 | ||
861 | type = gfc_typenode_for_spec (&sym->ts); | |
10174ddf MM |
862 | type = gfc_get_nodesc_array_type (type, sym->as, packed, |
863 | !sym->attr.target); | |
6de9cd9a DN |
864 | } |
865 | else | |
866 | { | |
867 | /* We now have an expression for the element size, so create a fully | |
868 | qualified type. Reset sym->backend decl or this will just return the | |
869 | old type. */ | |
3e978d30 | 870 | DECL_ARTIFICIAL (sym->backend_decl) = 1; |
6de9cd9a DN |
871 | sym->backend_decl = NULL_TREE; |
872 | type = gfc_sym_type (sym); | |
dcfef7d4 | 873 | packed = PACKED_FULL; |
6de9cd9a DN |
874 | } |
875 | ||
876 | ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0); | |
c2255bc4 AH |
877 | decl = build_decl (input_location, |
878 | VAR_DECL, get_identifier (name), type); | |
6de9cd9a DN |
879 | |
880 | DECL_ARTIFICIAL (decl) = 1; | |
cd3f04c8 | 881 | DECL_NAMELESS (decl) = 1; |
6de9cd9a DN |
882 | TREE_PUBLIC (decl) = 0; |
883 | TREE_STATIC (decl) = 0; | |
884 | DECL_EXTERNAL (decl) = 0; | |
885 | ||
886 | /* We should never get deferred shape arrays here. We used to because of | |
887 | frontend bugs. */ | |
6e45f57b | 888 | gcc_assert (sym->as->type != AS_DEFERRED); |
6de9cd9a | 889 | |
dcfef7d4 TS |
890 | if (packed == PACKED_PARTIAL) |
891 | GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1; | |
892 | else if (packed == PACKED_FULL) | |
893 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
6de9cd9a DN |
894 | |
895 | gfc_build_qualified_array (decl, sym); | |
896 | ||
897 | if (DECL_LANG_SPECIFIC (dummy)) | |
898 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (dummy); | |
899 | else | |
900 | gfc_allocate_lang_decl (decl); | |
901 | ||
902 | GFC_DECL_SAVED_DESCRIPTOR (decl) = dummy; | |
903 | ||
904 | if (sym->ns->proc_name->backend_decl == current_function_decl | |
905 | || sym->attr.contained) | |
906 | gfc_add_decl_to_function (decl); | |
907 | else | |
908 | gfc_add_decl_to_parent_function (decl); | |
909 | ||
910 | return decl; | |
911 | } | |
912 | ||
77f2a970 JJ |
913 | /* For symbol SYM with GFC_DECL_SAVED_DESCRIPTOR used in contained |
914 | function add a VAR_DECL to the current function with DECL_VALUE_EXPR | |
915 | pointing to the artificial variable for debug info purposes. */ | |
916 | ||
917 | static void | |
918 | gfc_nonlocal_dummy_array_decl (gfc_symbol *sym) | |
919 | { | |
920 | tree decl, dummy; | |
921 | ||
922 | if (! nonlocal_dummy_decl_pset) | |
923 | nonlocal_dummy_decl_pset = pointer_set_create (); | |
924 | ||
925 | if (pointer_set_insert (nonlocal_dummy_decl_pset, sym->backend_decl)) | |
926 | return; | |
927 | ||
928 | dummy = GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl); | |
c2255bc4 | 929 | decl = build_decl (input_location, VAR_DECL, DECL_NAME (dummy), |
77f2a970 JJ |
930 | TREE_TYPE (sym->backend_decl)); |
931 | DECL_ARTIFICIAL (decl) = 0; | |
932 | TREE_USED (decl) = 1; | |
933 | TREE_PUBLIC (decl) = 0; | |
934 | TREE_STATIC (decl) = 0; | |
935 | DECL_EXTERNAL (decl) = 0; | |
936 | if (DECL_BY_REFERENCE (dummy)) | |
937 | DECL_BY_REFERENCE (decl) = 1; | |
938 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (sym->backend_decl); | |
939 | SET_DECL_VALUE_EXPR (decl, sym->backend_decl); | |
940 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
941 | DECL_CONTEXT (decl) = DECL_CONTEXT (sym->backend_decl); | |
910ad8de | 942 | DECL_CHAIN (decl) = nonlocal_dummy_decls; |
77f2a970 JJ |
943 | nonlocal_dummy_decls = decl; |
944 | } | |
6de9cd9a DN |
945 | |
946 | /* Return a constant or a variable to use as a string length. Does not | |
947 | add the decl to the current scope. */ | |
948 | ||
949 | static tree | |
950 | gfc_create_string_length (gfc_symbol * sym) | |
951 | { | |
bc21d315 JW |
952 | gcc_assert (sym->ts.u.cl); |
953 | gfc_conv_const_charlen (sym->ts.u.cl); | |
cadb8f42 | 954 | |
bc21d315 | 955 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
6de9cd9a | 956 | { |
cadb8f42 | 957 | tree length; |
6de9cd9a DN |
958 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2]; |
959 | ||
960 | /* Also prefix the mangled name. */ | |
961 | strcpy (&name[1], sym->name); | |
962 | name[0] = '.'; | |
c2255bc4 AH |
963 | length = build_decl (input_location, |
964 | VAR_DECL, get_identifier (name), | |
d7177ab2 | 965 | gfc_charlen_type_node); |
6de9cd9a DN |
966 | DECL_ARTIFICIAL (length) = 1; |
967 | TREE_USED (length) = 1; | |
417ab240 JJ |
968 | if (sym->ns->proc_name->tlink != NULL) |
969 | gfc_defer_symbol_init (sym); | |
cadb8f42 | 970 | |
bc21d315 | 971 | sym->ts.u.cl->backend_decl = length; |
6de9cd9a DN |
972 | } |
973 | ||
bc21d315 JW |
974 | gcc_assert (sym->ts.u.cl->backend_decl != NULL_TREE); |
975 | return sym->ts.u.cl->backend_decl; | |
6de9cd9a DN |
976 | } |
977 | ||
910450c1 FW |
978 | /* If a variable is assigned a label, we add another two auxiliary |
979 | variables. */ | |
980 | ||
981 | static void | |
982 | gfc_add_assign_aux_vars (gfc_symbol * sym) | |
983 | { | |
984 | tree addr; | |
985 | tree length; | |
986 | tree decl; | |
987 | ||
988 | gcc_assert (sym->backend_decl); | |
989 | ||
990 | decl = sym->backend_decl; | |
991 | gfc_allocate_lang_decl (decl); | |
992 | GFC_DECL_ASSIGN (decl) = 1; | |
c2255bc4 AH |
993 | length = build_decl (input_location, |
994 | VAR_DECL, create_tmp_var_name (sym->name), | |
910450c1 | 995 | gfc_charlen_type_node); |
c2255bc4 AH |
996 | addr = build_decl (input_location, |
997 | VAR_DECL, create_tmp_var_name (sym->name), | |
910450c1 FW |
998 | pvoid_type_node); |
999 | gfc_finish_var_decl (length, sym); | |
1000 | gfc_finish_var_decl (addr, sym); | |
1001 | /* STRING_LENGTH is also used as flag. Less than -1 means that | |
1002 | ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the | |
1003 | target label's address. Otherwise, value is the length of a format string | |
1004 | and ASSIGN_ADDR is its address. */ | |
1005 | if (TREE_STATIC (length)) | |
1006 | DECL_INITIAL (length) = build_int_cst (NULL_TREE, -2); | |
1007 | else | |
1008 | gfc_defer_symbol_init (sym); | |
1009 | ||
1010 | GFC_DECL_STRING_LEN (decl) = length; | |
1011 | GFC_DECL_ASSIGN_ADDR (decl) = addr; | |
1012 | } | |
6de9cd9a | 1013 | |
08a6b8e0 TB |
1014 | |
1015 | static tree | |
1016 | add_attributes_to_decl (symbol_attribute sym_attr, tree list) | |
1017 | { | |
1018 | unsigned id; | |
1019 | tree attr; | |
1020 | ||
1021 | for (id = 0; id < EXT_ATTR_NUM; id++) | |
1022 | if (sym_attr.ext_attr & (1 << id)) | |
1023 | { | |
1024 | attr = build_tree_list ( | |
1025 | get_identifier (ext_attr_list[id].middle_end_name), | |
1026 | NULL_TREE); | |
1027 | list = chainon (list, attr); | |
1028 | } | |
1029 | ||
1030 | return list; | |
1031 | } | |
1032 | ||
1033 | ||
1d0134b3 JW |
1034 | static void build_function_decl (gfc_symbol * sym, bool global); |
1035 | ||
1036 | ||
6de9cd9a DN |
1037 | /* Return the decl for a gfc_symbol, create it if it doesn't already |
1038 | exist. */ | |
1039 | ||
1040 | tree | |
1041 | gfc_get_symbol_decl (gfc_symbol * sym) | |
1042 | { | |
1043 | tree decl; | |
1044 | tree length = NULL_TREE; | |
08a6b8e0 | 1045 | tree attributes; |
6de9cd9a DN |
1046 | int byref; |
1047 | ||
61321991 | 1048 | gcc_assert (sym->attr.referenced |
c60a84b8 | 1049 | || sym->attr.use_assoc |
6a018495 TB |
1050 | || sym->ns->proc_name->attr.if_source == IFSRC_IFBODY |
1051 | || (sym->module && sym->attr.if_source != IFSRC_DECL | |
1052 | && sym->backend_decl)); | |
6de9cd9a | 1053 | |
f64edc8b | 1054 | if (sym->ns && sym->ns->proc_name && sym->ns->proc_name->attr.function) |
6de9cd9a DN |
1055 | byref = gfc_return_by_reference (sym->ns->proc_name); |
1056 | else | |
1057 | byref = 0; | |
1058 | ||
eece1eb9 PT |
1059 | /* Make sure that the vtab for the declared type is completed. */ |
1060 | if (sym->ts.type == BT_CLASS) | |
1061 | { | |
7a08eda1 | 1062 | gfc_component *c = CLASS_DATA (sym); |
eece1eb9 | 1063 | if (!c->ts.u.derived->backend_decl) |
88ce8031 | 1064 | gfc_find_derived_vtab (c->ts.u.derived); |
eece1eb9 PT |
1065 | } |
1066 | ||
6de9cd9a DN |
1067 | if ((sym->attr.dummy && ! sym->attr.function) || (sym->attr.result && byref)) |
1068 | { | |
1069 | /* Return via extra parameter. */ | |
1070 | if (sym->attr.result && byref | |
1071 | && !sym->backend_decl) | |
1072 | { | |
1073 | sym->backend_decl = | |
1074 | DECL_ARGUMENTS (sym->ns->proc_name->backend_decl); | |
d198b59a JJ |
1075 | /* For entry master function skip over the __entry |
1076 | argument. */ | |
1077 | if (sym->ns->proc_name->attr.entry_master) | |
910ad8de | 1078 | sym->backend_decl = DECL_CHAIN (sym->backend_decl); |
6de9cd9a DN |
1079 | } |
1080 | ||
1081 | /* Dummy variables should already have been created. */ | |
6e45f57b | 1082 | gcc_assert (sym->backend_decl); |
6de9cd9a DN |
1083 | |
1084 | /* Create a character length variable. */ | |
1085 | if (sym->ts.type == BT_CHARACTER) | |
1086 | { | |
bc21d315 | 1087 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
417ab240 JJ |
1088 | length = gfc_create_string_length (sym); |
1089 | else | |
bc21d315 | 1090 | length = sym->ts.u.cl->backend_decl; |
417ab240 JJ |
1091 | if (TREE_CODE (length) == VAR_DECL |
1092 | && DECL_CONTEXT (length) == NULL_TREE) | |
6de9cd9a | 1093 | { |
3e978d30 PT |
1094 | /* Add the string length to the same context as the symbol. */ |
1095 | if (DECL_CONTEXT (sym->backend_decl) == current_function_decl) | |
1096 | gfc_add_decl_to_function (length); | |
1097 | else | |
1098 | gfc_add_decl_to_parent_function (length); | |
1099 | ||
1100 | gcc_assert (DECL_CONTEXT (sym->backend_decl) == | |
1101 | DECL_CONTEXT (length)); | |
1102 | ||
417ab240 | 1103 | gfc_defer_symbol_init (sym); |
a41baa64 | 1104 | } |
6de9cd9a DN |
1105 | } |
1106 | ||
1107 | /* Use a copy of the descriptor for dummy arrays. */ | |
1108 | if (sym->attr.dimension && !TREE_USED (sym->backend_decl)) | |
1109 | { | |
3e978d30 PT |
1110 | decl = gfc_build_dummy_array_decl (sym, sym->backend_decl); |
1111 | /* Prevent the dummy from being detected as unused if it is copied. */ | |
1112 | if (sym->backend_decl != NULL && decl != sym->backend_decl) | |
1113 | DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
1114 | sym->backend_decl = decl; | |
6de9cd9a DN |
1115 | } |
1116 | ||
1117 | TREE_USED (sym->backend_decl) = 1; | |
910450c1 FW |
1118 | if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0) |
1119 | { | |
1120 | gfc_add_assign_aux_vars (sym); | |
1121 | } | |
77f2a970 JJ |
1122 | |
1123 | if (sym->attr.dimension | |
1124 | && DECL_LANG_SPECIFIC (sym->backend_decl) | |
1125 | && GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl) | |
1126 | && DECL_CONTEXT (sym->backend_decl) != current_function_decl) | |
1127 | gfc_nonlocal_dummy_array_decl (sym); | |
1128 | ||
6de9cd9a DN |
1129 | return sym->backend_decl; |
1130 | } | |
1131 | ||
1132 | if (sym->backend_decl) | |
1133 | return sym->backend_decl; | |
1134 | ||
3af8d8cb | 1135 | /* If use associated and whole file compilation, use the module |
43afc047 | 1136 | declaration. */ |
3af8d8cb PT |
1137 | if (gfc_option.flag_whole_file |
1138 | && sym->attr.flavor == FL_VARIABLE | |
3af8d8cb PT |
1139 | && sym->attr.use_assoc |
1140 | && sym->module) | |
1141 | { | |
1142 | gfc_gsymbol *gsym; | |
1143 | ||
1144 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
1145 | if (gsym && gsym->ns && gsym->type == GSYM_MODULE) | |
1146 | { | |
1147 | gfc_symbol *s; | |
1148 | s = NULL; | |
1149 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
1150 | if (s && s->backend_decl) | |
1151 | { | |
43afc047 TB |
1152 | if (sym->ts.type == BT_DERIVED) |
1153 | gfc_copy_dt_decls_ifequal (s->ts.u.derived, sym->ts.u.derived, | |
1154 | true); | |
3af8d8cb | 1155 | if (sym->ts.type == BT_CHARACTER) |
bc21d315 | 1156 | sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl; |
71ff73f3 TB |
1157 | sym->backend_decl = s->backend_decl; |
1158 | return sym->backend_decl; | |
3af8d8cb PT |
1159 | } |
1160 | } | |
1161 | } | |
1162 | ||
6de9cd9a DN |
1163 | if (sym->attr.flavor == FL_PROCEDURE) |
1164 | { | |
1d0134b3 JW |
1165 | /* Catch function declarations. Only used for actual parameters, |
1166 | procedure pointers and procptr initialization targets. */ | |
1167 | if (sym->attr.external || sym->attr.use_assoc || sym->attr.intrinsic) | |
1168 | { | |
1169 | decl = gfc_get_extern_function_decl (sym); | |
1170 | gfc_set_decl_location (decl, &sym->declared_at); | |
1171 | } | |
1172 | else | |
1173 | { | |
1174 | if (!sym->backend_decl) | |
1175 | build_function_decl (sym, false); | |
1176 | decl = sym->backend_decl; | |
1177 | } | |
6de9cd9a DN |
1178 | return decl; |
1179 | } | |
1180 | ||
1181 | if (sym->attr.intrinsic) | |
1182 | internal_error ("intrinsic variable which isn't a procedure"); | |
1183 | ||
1184 | /* Create string length decl first so that they can be used in the | |
1185 | type declaration. */ | |
1186 | if (sym->ts.type == BT_CHARACTER) | |
1187 | length = gfc_create_string_length (sym); | |
1188 | ||
1189 | /* Create the decl for the variable. */ | |
c2255bc4 AH |
1190 | decl = build_decl (sym->declared_at.lb->location, |
1191 | VAR_DECL, gfc_sym_identifier (sym), gfc_sym_type (sym)); | |
c8cc8542 | 1192 | |
43ce5e52 FXC |
1193 | /* Add attributes to variables. Functions are handled elsewhere. */ |
1194 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); | |
1195 | decl_attributes (&decl, attributes, 0); | |
1196 | ||
f8d0aee5 | 1197 | /* Symbols from modules should have their assembler names mangled. |
6de9cd9a DN |
1198 | This is done here rather than in gfc_finish_var_decl because it |
1199 | is different for string length variables. */ | |
cb9e4f55 | 1200 | if (sym->module) |
a64f5186 | 1201 | { |
43ce5e52 | 1202 | gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym)); |
a64f5186 JJ |
1203 | if (sym->attr.use_assoc) |
1204 | DECL_IGNORED_P (decl) = 1; | |
1205 | } | |
6de9cd9a DN |
1206 | |
1207 | if (sym->attr.dimension) | |
1208 | { | |
1209 | /* Create variables to hold the non-constant bits of array info. */ | |
1210 | gfc_build_qualified_array (decl, sym); | |
1211 | ||
fe4e525c TB |
1212 | if (sym->attr.contiguous |
1213 | || ((sym->attr.allocatable || !sym->attr.dummy) && !sym->attr.pointer)) | |
6de9cd9a DN |
1214 | GFC_DECL_PACKED_ARRAY (decl) = 1; |
1215 | } | |
1216 | ||
1517fd57 | 1217 | /* Remember this variable for allocation/cleanup. */ |
3e78238a | 1218 | if (sym->attr.dimension || sym->attr.allocatable |
1517fd57 | 1219 | || (sym->ts.type == BT_CLASS && |
7a08eda1 JW |
1220 | (CLASS_DATA (sym)->attr.dimension |
1221 | || CLASS_DATA (sym)->attr.allocatable)) | |
1517fd57 JW |
1222 | || (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
1223 | /* This applies a derived type default initializer. */ | |
1224 | || (sym->ts.type == BT_DERIVED | |
1225 | && sym->attr.save == SAVE_NONE | |
1226 | && !sym->attr.data | |
1227 | && !sym->attr.allocatable | |
1228 | && (sym->value && !sym->ns->proc_name->attr.is_main_program) | |
1229 | && !sym->attr.use_assoc)) | |
b7b184a8 | 1230 | gfc_defer_symbol_init (sym); |
5046aff5 | 1231 | |
6de9cd9a DN |
1232 | gfc_finish_var_decl (decl, sym); |
1233 | ||
597073ac | 1234 | if (sym->ts.type == BT_CHARACTER) |
6de9cd9a | 1235 | { |
6de9cd9a DN |
1236 | /* Character variables need special handling. */ |
1237 | gfc_allocate_lang_decl (decl); | |
1238 | ||
597073ac | 1239 | if (TREE_CODE (length) != INTEGER_CST) |
6de9cd9a DN |
1240 | { |
1241 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2]; | |
1242 | ||
cb9e4f55 | 1243 | if (sym->module) |
6de9cd9a DN |
1244 | { |
1245 | /* Also prefix the mangled name for symbols from modules. */ | |
1246 | strcpy (&name[1], sym->name); | |
1247 | name[0] = '.'; | |
1248 | strcpy (&name[1], | |
1249 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (length))); | |
43ce5e52 | 1250 | gfc_set_decl_assembler_name (decl, get_identifier (name)); |
6de9cd9a DN |
1251 | } |
1252 | gfc_finish_var_decl (length, sym); | |
6e45f57b | 1253 | gcc_assert (!sym->value); |
6de9cd9a | 1254 | } |
6de9cd9a | 1255 | } |
1d6b7f39 PT |
1256 | else if (sym->attr.subref_array_pointer) |
1257 | { | |
1258 | /* We need the span for these beasts. */ | |
1259 | gfc_allocate_lang_decl (decl); | |
1260 | } | |
1261 | ||
1262 | if (sym->attr.subref_array_pointer) | |
1263 | { | |
1264 | tree span; | |
1265 | GFC_DECL_SUBREF_ARRAY_P (decl) = 1; | |
c2255bc4 AH |
1266 | span = build_decl (input_location, |
1267 | VAR_DECL, create_tmp_var_name ("span"), | |
1d6b7f39 PT |
1268 | gfc_array_index_type); |
1269 | gfc_finish_var_decl (span, sym); | |
de870512 JJ |
1270 | TREE_STATIC (span) = TREE_STATIC (decl); |
1271 | DECL_ARTIFICIAL (span) = 1; | |
1272 | DECL_INITIAL (span) = build_int_cst (gfc_array_index_type, 0); | |
1d6b7f39 PT |
1273 | |
1274 | GFC_DECL_SPAN (decl) = span; | |
de870512 | 1275 | GFC_TYPE_ARRAY_SPAN (TREE_TYPE (decl)) = span; |
1d6b7f39 PT |
1276 | } |
1277 | ||
6de9cd9a DN |
1278 | sym->backend_decl = decl; |
1279 | ||
910450c1 | 1280 | if (sym->attr.assign) |
6c0e51c4 | 1281 | gfc_add_assign_aux_vars (sym); |
910450c1 | 1282 | |
2b56d6a4 TB |
1283 | if (TREE_STATIC (decl) && !sym->attr.use_assoc |
1284 | && (sym->attr.save || sym->ns->proc_name->attr.is_main_program | |
1285 | || gfc_option.flag_max_stack_var_size == 0 | |
1286 | || sym->attr.data || sym->ns->proc_name->attr.flavor == FL_MODULE)) | |
1287 | { | |
1288 | /* Add static initializer. For procedures, it is only needed if | |
1289 | SAVE is specified otherwise they need to be reinitialized | |
1290 | every time the procedure is entered. The TREE_STATIC is | |
1291 | in this case due to -fmax-stack-var-size=. */ | |
597073ac | 1292 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
1d0134b3 JW |
1293 | TREE_TYPE (decl), |
1294 | sym->attr.dimension, | |
1295 | sym->attr.pointer | |
1296 | || sym->attr.allocatable, | |
1297 | sym->attr.proc_pointer); | |
597073ac PB |
1298 | } |
1299 | ||
77f2a970 JJ |
1300 | if (!TREE_STATIC (decl) |
1301 | && POINTER_TYPE_P (TREE_TYPE (decl)) | |
1302 | && !sym->attr.pointer | |
1303 | && !sym->attr.allocatable | |
1304 | && !sym->attr.proc_pointer) | |
1305 | DECL_BY_REFERENCE (decl) = 1; | |
1306 | ||
6de9cd9a DN |
1307 | return decl; |
1308 | } | |
1309 | ||
1310 | ||
7b5b57b7 PB |
1311 | /* Substitute a temporary variable in place of the real one. */ |
1312 | ||
1313 | void | |
1314 | gfc_shadow_sym (gfc_symbol * sym, tree decl, gfc_saved_var * save) | |
1315 | { | |
1316 | save->attr = sym->attr; | |
1317 | save->decl = sym->backend_decl; | |
1318 | ||
1319 | gfc_clear_attr (&sym->attr); | |
1320 | sym->attr.referenced = 1; | |
1321 | sym->attr.flavor = FL_VARIABLE; | |
1322 | ||
1323 | sym->backend_decl = decl; | |
1324 | } | |
1325 | ||
1326 | ||
1327 | /* Restore the original variable. */ | |
1328 | ||
1329 | void | |
1330 | gfc_restore_sym (gfc_symbol * sym, gfc_saved_var * save) | |
1331 | { | |
1332 | sym->attr = save->attr; | |
1333 | sym->backend_decl = save->decl; | |
1334 | } | |
1335 | ||
1336 | ||
8fb74da4 JW |
1337 | /* Declare a procedure pointer. */ |
1338 | ||
1339 | static tree | |
1340 | get_proc_pointer_decl (gfc_symbol *sym) | |
1341 | { | |
1342 | tree decl; | |
08a6b8e0 | 1343 | tree attributes; |
8fb74da4 JW |
1344 | |
1345 | decl = sym->backend_decl; | |
1346 | if (decl) | |
1347 | return decl; | |
1348 | ||
c2255bc4 AH |
1349 | decl = build_decl (input_location, |
1350 | VAR_DECL, get_identifier (sym->name), | |
8fb74da4 JW |
1351 | build_pointer_type (gfc_get_function_type (sym))); |
1352 | ||
06c7153f TB |
1353 | if ((sym->ns->proc_name |
1354 | && sym->ns->proc_name->backend_decl == current_function_decl) | |
8fb74da4 JW |
1355 | || sym->attr.contained) |
1356 | gfc_add_decl_to_function (decl); | |
6e0d2de7 | 1357 | else if (sym->ns->proc_name->attr.flavor != FL_MODULE) |
8fb74da4 JW |
1358 | gfc_add_decl_to_parent_function (decl); |
1359 | ||
1360 | sym->backend_decl = decl; | |
1361 | ||
6e0d2de7 JW |
1362 | /* If a variable is USE associated, it's always external. */ |
1363 | if (sym->attr.use_assoc) | |
1364 | { | |
1365 | DECL_EXTERNAL (decl) = 1; | |
1366 | TREE_PUBLIC (decl) = 1; | |
1367 | } | |
1368 | else if (sym->module && sym->ns->proc_name->attr.flavor == FL_MODULE) | |
1369 | { | |
1370 | /* This is the declaration of a module variable. */ | |
1371 | TREE_PUBLIC (decl) = 1; | |
1372 | TREE_STATIC (decl) = 1; | |
1373 | } | |
1374 | ||
8fb74da4 JW |
1375 | if (!sym->attr.use_assoc |
1376 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
1377 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
1378 | TREE_STATIC (decl) = 1; | |
1379 | ||
1380 | if (TREE_STATIC (decl) && sym->value) | |
1381 | { | |
1382 | /* Add static initializer. */ | |
1383 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
1d0134b3 JW |
1384 | TREE_TYPE (decl), |
1385 | sym->attr.dimension, | |
1386 | false, true); | |
8fb74da4 JW |
1387 | } |
1388 | ||
08a6b8e0 TB |
1389 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1390 | decl_attributes (&decl, attributes, 0); | |
1391 | ||
8fb74da4 JW |
1392 | return decl; |
1393 | } | |
1394 | ||
1395 | ||
6de9cd9a DN |
1396 | /* Get a basic decl for an external function. */ |
1397 | ||
1398 | tree | |
1399 | gfc_get_extern_function_decl (gfc_symbol * sym) | |
1400 | { | |
1401 | tree type; | |
1402 | tree fndecl; | |
08a6b8e0 | 1403 | tree attributes; |
6de9cd9a DN |
1404 | gfc_expr e; |
1405 | gfc_intrinsic_sym *isym; | |
1406 | gfc_expr argexpr; | |
e6472bce | 1407 | char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */ |
6de9cd9a DN |
1408 | tree name; |
1409 | tree mangled_name; | |
71a7778c | 1410 | gfc_gsymbol *gsym; |
6de9cd9a DN |
1411 | |
1412 | if (sym->backend_decl) | |
1413 | return sym->backend_decl; | |
1414 | ||
3d79abbd PB |
1415 | /* We should never be creating external decls for alternate entry points. |
1416 | The procedure may be an alternate entry point, but we don't want/need | |
1417 | to know that. */ | |
6e45f57b | 1418 | gcc_assert (!(sym->attr.entry || sym->attr.entry_master)); |
3d79abbd | 1419 | |
8fb74da4 JW |
1420 | if (sym->attr.proc_pointer) |
1421 | return get_proc_pointer_decl (sym); | |
1422 | ||
71a7778c PT |
1423 | /* See if this is an external procedure from the same file. If so, |
1424 | return the backend_decl. */ | |
1425 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->name); | |
1426 | ||
1427 | if (gfc_option.flag_whole_file | |
6a018495 | 1428 | && (!sym->attr.use_assoc || sym->attr.if_source != IFSRC_DECL) |
71a7778c PT |
1429 | && !sym->backend_decl |
1430 | && gsym && gsym->ns | |
1431 | && ((gsym->type == GSYM_SUBROUTINE) || (gsym->type == GSYM_FUNCTION)) | |
fb55ca75 | 1432 | && (gsym->ns->proc_name->backend_decl || !sym->attr.intrinsic)) |
71a7778c | 1433 | { |
fb55ca75 TB |
1434 | if (!gsym->ns->proc_name->backend_decl) |
1435 | { | |
1436 | /* By construction, the external function cannot be | |
1437 | a contained procedure. */ | |
1438 | locus old_loc; | |
1439 | tree save_fn_decl = current_function_decl; | |
1440 | ||
1441 | current_function_decl = NULL_TREE; | |
1442 | gfc_get_backend_locus (&old_loc); | |
1443 | push_cfun (cfun); | |
1444 | ||
1445 | gfc_create_function_decl (gsym->ns, true); | |
1446 | ||
1447 | pop_cfun (); | |
1448 | gfc_set_backend_locus (&old_loc); | |
1449 | current_function_decl = save_fn_decl; | |
1450 | } | |
1451 | ||
71a7778c PT |
1452 | /* If the namespace has entries, the proc_name is the |
1453 | entry master. Find the entry and use its backend_decl. | |
1454 | otherwise, use the proc_name backend_decl. */ | |
1455 | if (gsym->ns->entries) | |
1456 | { | |
1457 | gfc_entry_list *entry = gsym->ns->entries; | |
1458 | ||
1459 | for (; entry; entry = entry->next) | |
1460 | { | |
1461 | if (strcmp (gsym->name, entry->sym->name) == 0) | |
1462 | { | |
1463 | sym->backend_decl = entry->sym->backend_decl; | |
1464 | break; | |
1465 | } | |
1466 | } | |
1467 | } | |
1468 | else | |
6a018495 | 1469 | sym->backend_decl = gsym->ns->proc_name->backend_decl; |
71a7778c PT |
1470 | |
1471 | if (sym->backend_decl) | |
6a018495 TB |
1472 | { |
1473 | /* Avoid problems of double deallocation of the backend declaration | |
1474 | later in gfc_trans_use_stmts; cf. PR 45087. */ | |
1475 | if (sym->attr.if_source != IFSRC_DECL && sym->attr.use_assoc) | |
1476 | sym->attr.use_assoc = 0; | |
1477 | ||
1478 | return sym->backend_decl; | |
1479 | } | |
71a7778c PT |
1480 | } |
1481 | ||
3af8d8cb PT |
1482 | /* See if this is a module procedure from the same file. If so, |
1483 | return the backend_decl. */ | |
1484 | if (sym->module) | |
1485 | gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module); | |
1486 | ||
1487 | if (gfc_option.flag_whole_file | |
1488 | && gsym && gsym->ns | |
1489 | && gsym->type == GSYM_MODULE) | |
1490 | { | |
1491 | gfc_symbol *s; | |
1492 | ||
1493 | s = NULL; | |
1494 | gfc_find_symbol (sym->name, gsym->ns, 0, &s); | |
1495 | if (s && s->backend_decl) | |
1496 | { | |
1497 | sym->backend_decl = s->backend_decl; | |
1498 | return sym->backend_decl; | |
1499 | } | |
1500 | } | |
1501 | ||
6de9cd9a DN |
1502 | if (sym->attr.intrinsic) |
1503 | { | |
1504 | /* Call the resolution function to get the actual name. This is | |
1505 | a nasty hack which relies on the resolution functions only looking | |
1506 | at the first argument. We pass NULL for the second argument | |
1507 | otherwise things like AINT get confused. */ | |
1508 | isym = gfc_find_function (sym->name); | |
6e45f57b | 1509 | gcc_assert (isym->resolve.f0 != NULL); |
6de9cd9a DN |
1510 | |
1511 | memset (&e, 0, sizeof (e)); | |
1512 | e.expr_type = EXPR_FUNCTION; | |
1513 | ||
1514 | memset (&argexpr, 0, sizeof (argexpr)); | |
6e45f57b | 1515 | gcc_assert (isym->formal); |
6de9cd9a DN |
1516 | argexpr.ts = isym->formal->ts; |
1517 | ||
1518 | if (isym->formal->next == NULL) | |
1519 | isym->resolve.f1 (&e, &argexpr); | |
1520 | else | |
1521 | { | |
0e7e7e6e FXC |
1522 | if (isym->formal->next->next == NULL) |
1523 | isym->resolve.f2 (&e, &argexpr, NULL); | |
1524 | else | |
1525 | { | |
5cda5098 FXC |
1526 | if (isym->formal->next->next->next == NULL) |
1527 | isym->resolve.f3 (&e, &argexpr, NULL, NULL); | |
1528 | else | |
1529 | { | |
1530 | /* All specific intrinsics take less than 5 arguments. */ | |
1531 | gcc_assert (isym->formal->next->next->next->next == NULL); | |
1532 | isym->resolve.f4 (&e, &argexpr, NULL, NULL, NULL); | |
1533 | } | |
0e7e7e6e | 1534 | } |
6de9cd9a | 1535 | } |
973ff4c0 TS |
1536 | |
1537 | if (gfc_option.flag_f2c | |
1538 | && ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind) | |
1539 | || e.ts.type == BT_COMPLEX)) | |
1540 | { | |
1541 | /* Specific which needs a different implementation if f2c | |
1542 | calling conventions are used. */ | |
e6472bce | 1543 | sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name); |
973ff4c0 TS |
1544 | } |
1545 | else | |
e6472bce | 1546 | sprintf (s, "_gfortran_specific%s", e.value.function.name); |
973ff4c0 | 1547 | |
6de9cd9a DN |
1548 | name = get_identifier (s); |
1549 | mangled_name = name; | |
1550 | } | |
1551 | else | |
1552 | { | |
1553 | name = gfc_sym_identifier (sym); | |
1554 | mangled_name = gfc_sym_mangled_function_id (sym); | |
1555 | } | |
1556 | ||
1557 | type = gfc_get_function_type (sym); | |
c2255bc4 AH |
1558 | fndecl = build_decl (input_location, |
1559 | FUNCTION_DECL, name, type); | |
6de9cd9a | 1560 | |
43ce5e52 FXC |
1561 | attributes = add_attributes_to_decl (sym->attr, NULL_TREE); |
1562 | decl_attributes (&fndecl, attributes, 0); | |
1563 | ||
1564 | gfc_set_decl_assembler_name (fndecl, mangled_name); | |
6de9cd9a DN |
1565 | |
1566 | /* Set the context of this decl. */ | |
1567 | if (0 && sym->ns && sym->ns->proc_name) | |
1568 | { | |
1569 | /* TODO: Add external decls to the appropriate scope. */ | |
1570 | DECL_CONTEXT (fndecl) = sym->ns->proc_name->backend_decl; | |
1571 | } | |
1572 | else | |
1573 | { | |
f8d0aee5 | 1574 | /* Global declaration, e.g. intrinsic subroutine. */ |
6de9cd9a DN |
1575 | DECL_CONTEXT (fndecl) = NULL_TREE; |
1576 | } | |
1577 | ||
1578 | DECL_EXTERNAL (fndecl) = 1; | |
1579 | ||
f8d0aee5 | 1580 | /* This specifies if a function is globally addressable, i.e. it is |
6de9cd9a DN |
1581 | the opposite of declaring static in C. */ |
1582 | TREE_PUBLIC (fndecl) = 1; | |
1583 | ||
1584 | /* Set attributes for PURE functions. A call to PURE function in the | |
1585 | Fortran 95 sense is both pure and without side effects in the C | |
1586 | sense. */ | |
1587 | if (sym->attr.pure || sym->attr.elemental) | |
1588 | { | |
cf013e9f | 1589 | if (sym->attr.function && !gfc_return_by_reference (sym)) |
becfd6e5 | 1590 | DECL_PURE_P (fndecl) = 1; |
b7e6a6b3 TS |
1591 | /* TODO: check if pure SUBROUTINEs don't have INTENT(OUT) |
1592 | parameters and don't use alternate returns (is this | |
1593 | allowed?). In that case, calls to them are meaningless, and | |
3d79abbd | 1594 | can be optimized away. See also in build_function_decl(). */ |
b7e6a6b3 | 1595 | TREE_SIDE_EFFECTS (fndecl) = 0; |
6de9cd9a DN |
1596 | } |
1597 | ||
fe58e076 TK |
1598 | /* Mark non-returning functions. */ |
1599 | if (sym->attr.noreturn) | |
1600 | TREE_THIS_VOLATILE(fndecl) = 1; | |
1601 | ||
6de9cd9a DN |
1602 | sym->backend_decl = fndecl; |
1603 | ||
1604 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1605 | pushdecl_top_level (fndecl); | |
1606 | ||
1607 | return fndecl; | |
1608 | } | |
1609 | ||
1610 | ||
1611 | /* Create a declaration for a procedure. For external functions (in the C | |
3d79abbd PB |
1612 | sense) use gfc_get_extern_function_decl. HAS_ENTRIES is true if this is |
1613 | a master function with alternate entry points. */ | |
6de9cd9a | 1614 | |
3d79abbd | 1615 | static void |
fb55ca75 | 1616 | build_function_decl (gfc_symbol * sym, bool global) |
6de9cd9a | 1617 | { |
08a6b8e0 | 1618 | tree fndecl, type, attributes; |
6de9cd9a | 1619 | symbol_attribute attr; |
3d79abbd | 1620 | tree result_decl; |
6de9cd9a DN |
1621 | gfc_formal_arglist *f; |
1622 | ||
6e45f57b | 1623 | gcc_assert (!sym->attr.external); |
6de9cd9a | 1624 | |
1d0134b3 JW |
1625 | if (sym->backend_decl) |
1626 | return; | |
1627 | ||
c8cc8542 PB |
1628 | /* Set the line and filename. sym->declared_at seems to point to the |
1629 | last statement for subroutines, but it'll do for now. */ | |
1630 | gfc_set_backend_locus (&sym->declared_at); | |
1631 | ||
6de9cd9a | 1632 | /* Allow only one nesting level. Allow public declarations. */ |
6e45f57b | 1633 | gcc_assert (current_function_decl == NULL_TREE |
a64f5186 JJ |
1634 | || DECL_CONTEXT (current_function_decl) == NULL_TREE |
1635 | || TREE_CODE (DECL_CONTEXT (current_function_decl)) | |
1636 | == NAMESPACE_DECL); | |
6de9cd9a DN |
1637 | |
1638 | type = gfc_get_function_type (sym); | |
c2255bc4 AH |
1639 | fndecl = build_decl (input_location, |
1640 | FUNCTION_DECL, gfc_sym_identifier (sym), type); | |
6de9cd9a | 1641 | |
43ce5e52 FXC |
1642 | attr = sym->attr; |
1643 | ||
1644 | attributes = add_attributes_to_decl (attr, NULL_TREE); | |
1645 | decl_attributes (&fndecl, attributes, 0); | |
1646 | ||
6de9cd9a DN |
1647 | /* Perform name mangling if this is a top level or module procedure. */ |
1648 | if (current_function_decl == NULL_TREE) | |
43ce5e52 | 1649 | gfc_set_decl_assembler_name (fndecl, gfc_sym_mangled_function_id (sym)); |
6de9cd9a DN |
1650 | |
1651 | /* Figure out the return type of the declared function, and build a | |
f8d0aee5 | 1652 | RESULT_DECL for it. If this is a subroutine with alternate |
6de9cd9a | 1653 | returns, build a RESULT_DECL for it. */ |
6de9cd9a DN |
1654 | result_decl = NULL_TREE; |
1655 | /* TODO: Shouldn't this just be TREE_TYPE (TREE_TYPE (fndecl)). */ | |
1656 | if (attr.function) | |
1657 | { | |
1658 | if (gfc_return_by_reference (sym)) | |
1659 | type = void_type_node; | |
1660 | else | |
1661 | { | |
1662 | if (sym->result != sym) | |
1663 | result_decl = gfc_sym_identifier (sym->result); | |
1664 | ||
1665 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
1666 | } | |
1667 | } | |
1668 | else | |
1669 | { | |
1670 | /* Look for alternate return placeholders. */ | |
1671 | int has_alternate_returns = 0; | |
1672 | for (f = sym->formal; f; f = f->next) | |
1673 | { | |
1674 | if (f->sym == NULL) | |
1675 | { | |
1676 | has_alternate_returns = 1; | |
1677 | break; | |
1678 | } | |
1679 | } | |
1680 | ||
1681 | if (has_alternate_returns) | |
1682 | type = integer_type_node; | |
1683 | else | |
1684 | type = void_type_node; | |
1685 | } | |
1686 | ||
c2255bc4 AH |
1687 | result_decl = build_decl (input_location, |
1688 | RESULT_DECL, result_decl, type); | |
b785f485 RH |
1689 | DECL_ARTIFICIAL (result_decl) = 1; |
1690 | DECL_IGNORED_P (result_decl) = 1; | |
6de9cd9a DN |
1691 | DECL_CONTEXT (result_decl) = fndecl; |
1692 | DECL_RESULT (fndecl) = result_decl; | |
1693 | ||
1694 | /* Don't call layout_decl for a RESULT_DECL. | |
f8d0aee5 | 1695 | layout_decl (result_decl, 0); */ |
6de9cd9a | 1696 | |
6de9cd9a DN |
1697 | /* Set up all attributes for the function. */ |
1698 | DECL_CONTEXT (fndecl) = current_function_decl; | |
1699 | DECL_EXTERNAL (fndecl) = 0; | |
1700 | ||
ae51017b | 1701 | /* This specifies if a function is globally visible, i.e. it is |
472ca416 | 1702 | the opposite of declaring static in C. */ |
3d79abbd | 1703 | if (DECL_CONTEXT (fndecl) == NULL_TREE |
092231a8 | 1704 | && !sym->attr.entry_master && !sym->attr.is_main_program) |
6de9cd9a DN |
1705 | TREE_PUBLIC (fndecl) = 1; |
1706 | ||
1707 | /* TREE_STATIC means the function body is defined here. */ | |
1d754240 | 1708 | TREE_STATIC (fndecl) = 1; |
6de9cd9a | 1709 | |
f8d0aee5 | 1710 | /* Set attributes for PURE functions. A call to a PURE function in the |
6de9cd9a DN |
1711 | Fortran 95 sense is both pure and without side effects in the C |
1712 | sense. */ | |
1713 | if (attr.pure || attr.elemental) | |
1714 | { | |
b7e6a6b3 | 1715 | /* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments |
86bf520d | 1716 | including an alternate return. In that case it can also be |
1f2959f0 | 1717 | marked as PURE. See also in gfc_get_extern_function_decl(). */ |
a01db3bf | 1718 | if (attr.function && !gfc_return_by_reference (sym)) |
becfd6e5 | 1719 | DECL_PURE_P (fndecl) = 1; |
6de9cd9a DN |
1720 | TREE_SIDE_EFFECTS (fndecl) = 0; |
1721 | } | |
1722 | ||
08a6b8e0 | 1723 | |
6de9cd9a DN |
1724 | /* Layout the function declaration and put it in the binding level |
1725 | of the current function. */ | |
fb55ca75 TB |
1726 | |
1727 | if (global) | |
1728 | pushdecl_top_level (fndecl); | |
1729 | else | |
1730 | pushdecl (fndecl); | |
3d79abbd PB |
1731 | |
1732 | sym->backend_decl = fndecl; | |
1733 | } | |
1734 | ||
1735 | ||
1736 | /* Create the DECL_ARGUMENTS for a procedure. */ | |
1737 | ||
1738 | static void | |
1739 | create_function_arglist (gfc_symbol * sym) | |
1740 | { | |
1741 | tree fndecl; | |
1742 | gfc_formal_arglist *f; | |
417ab240 JJ |
1743 | tree typelist, hidden_typelist; |
1744 | tree arglist, hidden_arglist; | |
3d79abbd PB |
1745 | tree type; |
1746 | tree parm; | |
1747 | ||
1748 | fndecl = sym->backend_decl; | |
1749 | ||
1d754240 PB |
1750 | /* Build formal argument list. Make sure that their TREE_CONTEXT is |
1751 | the new FUNCTION_DECL node. */ | |
1d754240 | 1752 | arglist = NULL_TREE; |
417ab240 | 1753 | hidden_arglist = NULL_TREE; |
1d754240 | 1754 | typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
3d79abbd PB |
1755 | |
1756 | if (sym->attr.entry_master) | |
1757 | { | |
1758 | type = TREE_VALUE (typelist); | |
c2255bc4 AH |
1759 | parm = build_decl (input_location, |
1760 | PARM_DECL, get_identifier ("__entry"), type); | |
3d79abbd PB |
1761 | |
1762 | DECL_CONTEXT (parm) = fndecl; | |
1763 | DECL_ARG_TYPE (parm) = type; | |
1764 | TREE_READONLY (parm) = 1; | |
faf28b3a | 1765 | gfc_finish_decl (parm); |
3e978d30 | 1766 | DECL_ARTIFICIAL (parm) = 1; |
3d79abbd PB |
1767 | |
1768 | arglist = chainon (arglist, parm); | |
1769 | typelist = TREE_CHAIN (typelist); | |
1770 | } | |
1771 | ||
1d754240 | 1772 | if (gfc_return_by_reference (sym)) |
6de9cd9a | 1773 | { |
417ab240 | 1774 | tree type = TREE_VALUE (typelist), length = NULL; |
6de9cd9a | 1775 | |
1d754240 PB |
1776 | if (sym->ts.type == BT_CHARACTER) |
1777 | { | |
1d754240 | 1778 | /* Length of character result. */ |
417ab240 JJ |
1779 | tree len_type = TREE_VALUE (TREE_CHAIN (typelist)); |
1780 | gcc_assert (len_type == gfc_charlen_type_node); | |
6de9cd9a | 1781 | |
c2255bc4 AH |
1782 | length = build_decl (input_location, |
1783 | PARM_DECL, | |
1d754240 | 1784 | get_identifier (".__result"), |
417ab240 | 1785 | len_type); |
bc21d315 | 1786 | if (!sym->ts.u.cl->length) |
1d754240 | 1787 | { |
bc21d315 | 1788 | sym->ts.u.cl->backend_decl = length; |
1d754240 | 1789 | TREE_USED (length) = 1; |
6de9cd9a | 1790 | } |
6e45f57b | 1791 | gcc_assert (TREE_CODE (length) == PARM_DECL); |
1d754240 | 1792 | DECL_CONTEXT (length) = fndecl; |
417ab240 | 1793 | DECL_ARG_TYPE (length) = len_type; |
1d754240 | 1794 | TREE_READONLY (length) = 1; |
ca0e9281 | 1795 | DECL_ARTIFICIAL (length) = 1; |
faf28b3a | 1796 | gfc_finish_decl (length); |
bc21d315 JW |
1797 | if (sym->ts.u.cl->backend_decl == NULL |
1798 | || sym->ts.u.cl->backend_decl == length) | |
417ab240 JJ |
1799 | { |
1800 | gfc_symbol *arg; | |
1801 | tree backend_decl; | |
6de9cd9a | 1802 | |
bc21d315 | 1803 | if (sym->ts.u.cl->backend_decl == NULL) |
417ab240 | 1804 | { |
c2255bc4 AH |
1805 | tree len = build_decl (input_location, |
1806 | VAR_DECL, | |
417ab240 JJ |
1807 | get_identifier ("..__result"), |
1808 | gfc_charlen_type_node); | |
1809 | DECL_ARTIFICIAL (len) = 1; | |
1810 | TREE_USED (len) = 1; | |
bc21d315 | 1811 | sym->ts.u.cl->backend_decl = len; |
417ab240 | 1812 | } |
6de9cd9a | 1813 | |
417ab240 JJ |
1814 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ |
1815 | arg = sym->result ? sym->result : sym; | |
1816 | backend_decl = arg->backend_decl; | |
1817 | /* Temporary clear it, so that gfc_sym_type creates complete | |
1818 | type. */ | |
1819 | arg->backend_decl = NULL; | |
1820 | type = gfc_sym_type (arg); | |
1821 | arg->backend_decl = backend_decl; | |
1822 | type = build_reference_type (type); | |
1823 | } | |
1824 | } | |
6de9cd9a | 1825 | |
c2255bc4 AH |
1826 | parm = build_decl (input_location, |
1827 | PARM_DECL, get_identifier ("__result"), type); | |
6de9cd9a | 1828 | |
417ab240 JJ |
1829 | DECL_CONTEXT (parm) = fndecl; |
1830 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
1831 | TREE_READONLY (parm) = 1; | |
1832 | DECL_ARTIFICIAL (parm) = 1; | |
faf28b3a | 1833 | gfc_finish_decl (parm); |
6de9cd9a | 1834 | |
417ab240 JJ |
1835 | arglist = chainon (arglist, parm); |
1836 | typelist = TREE_CHAIN (typelist); | |
6de9cd9a | 1837 | |
417ab240 JJ |
1838 | if (sym->ts.type == BT_CHARACTER) |
1839 | { | |
1840 | gfc_allocate_lang_decl (parm); | |
1841 | arglist = chainon (arglist, length); | |
1d754240 PB |
1842 | typelist = TREE_CHAIN (typelist); |
1843 | } | |
1844 | } | |
6de9cd9a | 1845 | |
417ab240 JJ |
1846 | hidden_typelist = typelist; |
1847 | for (f = sym->formal; f; f = f->next) | |
1848 | if (f->sym != NULL) /* Ignore alternate returns. */ | |
1849 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
1850 | ||
1d754240 PB |
1851 | for (f = sym->formal; f; f = f->next) |
1852 | { | |
1853 | char name[GFC_MAX_SYMBOL_LEN + 2]; | |
417ab240 | 1854 | |
1d754240 PB |
1855 | /* Ignore alternate returns. */ |
1856 | if (f->sym == NULL) | |
1857 | continue; | |
6de9cd9a | 1858 | |
1d754240 | 1859 | type = TREE_VALUE (typelist); |
6de9cd9a | 1860 | |
33215bb3 TB |
1861 | if (f->sym->ts.type == BT_CHARACTER |
1862 | && (!sym->attr.is_bind_c || sym->attr.entry_master)) | |
417ab240 JJ |
1863 | { |
1864 | tree len_type = TREE_VALUE (hidden_typelist); | |
1865 | tree length = NULL_TREE; | |
1866 | gcc_assert (len_type == gfc_charlen_type_node); | |
1867 | ||
1868 | strcpy (&name[1], f->sym->name); | |
1869 | name[0] = '_'; | |
c2255bc4 AH |
1870 | length = build_decl (input_location, |
1871 | PARM_DECL, get_identifier (name), len_type); | |
6de9cd9a | 1872 | |
417ab240 JJ |
1873 | hidden_arglist = chainon (hidden_arglist, length); |
1874 | DECL_CONTEXT (length) = fndecl; | |
1875 | DECL_ARTIFICIAL (length) = 1; | |
1876 | DECL_ARG_TYPE (length) = len_type; | |
1877 | TREE_READONLY (length) = 1; | |
faf28b3a | 1878 | gfc_finish_decl (length); |
6de9cd9a | 1879 | |
cadb8f42 | 1880 | /* Remember the passed value. */ |
bc21d315 | 1881 | if (f->sym->ts.u.cl->passed_length != NULL) |
3ba558db TB |
1882 | { |
1883 | /* This can happen if the same type is used for multiple | |
1884 | arguments. We need to copy cl as otherwise | |
1885 | cl->passed_length gets overwritten. */ | |
b76e28c6 | 1886 | f->sym->ts.u.cl = gfc_new_charlen (f->sym->ns, f->sym->ts.u.cl); |
3ba558db | 1887 | } |
bc21d315 | 1888 | f->sym->ts.u.cl->passed_length = length; |
6de9cd9a | 1889 | |
417ab240 | 1890 | /* Use the passed value for assumed length variables. */ |
bc21d315 | 1891 | if (!f->sym->ts.u.cl->length) |
6de9cd9a | 1892 | { |
417ab240 | 1893 | TREE_USED (length) = 1; |
bc21d315 JW |
1894 | gcc_assert (!f->sym->ts.u.cl->backend_decl); |
1895 | f->sym->ts.u.cl->backend_decl = length; | |
417ab240 JJ |
1896 | } |
1897 | ||
1898 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
1899 | ||
bc21d315 JW |
1900 | if (f->sym->ts.u.cl->backend_decl == NULL |
1901 | || f->sym->ts.u.cl->backend_decl == length) | |
417ab240 | 1902 | { |
bc21d315 | 1903 | if (f->sym->ts.u.cl->backend_decl == NULL) |
417ab240 JJ |
1904 | gfc_create_string_length (f->sym); |
1905 | ||
1906 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ | |
1907 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
1908 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
1909 | else | |
1910 | type = gfc_sym_type (f->sym); | |
6de9cd9a | 1911 | } |
6de9cd9a DN |
1912 | } |
1913 | ||
417ab240 JJ |
1914 | /* For non-constant length array arguments, make sure they use |
1915 | a different type node from TYPE_ARG_TYPES type. */ | |
1916 | if (f->sym->attr.dimension | |
1917 | && type == TREE_VALUE (typelist) | |
1918 | && TREE_CODE (type) == POINTER_TYPE | |
1919 | && GFC_ARRAY_TYPE_P (type) | |
1920 | && f->sym->as->type != AS_ASSUMED_SIZE | |
1921 | && ! COMPLETE_TYPE_P (TREE_TYPE (type))) | |
1922 | { | |
1923 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
1924 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
1925 | else | |
1926 | type = gfc_sym_type (f->sym); | |
1927 | } | |
1928 | ||
8fb74da4 JW |
1929 | if (f->sym->attr.proc_pointer) |
1930 | type = build_pointer_type (type); | |
1931 | ||
df2fba9e | 1932 | /* Build the argument declaration. */ |
c2255bc4 AH |
1933 | parm = build_decl (input_location, |
1934 | PARM_DECL, gfc_sym_identifier (f->sym), type); | |
417ab240 JJ |
1935 | |
1936 | /* Fill in arg stuff. */ | |
1937 | DECL_CONTEXT (parm) = fndecl; | |
1938 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
1939 | /* All implementation args are read-only. */ | |
1940 | TREE_READONLY (parm) = 1; | |
714495cd JJ |
1941 | if (POINTER_TYPE_P (type) |
1942 | && (!f->sym->attr.proc_pointer | |
1943 | && f->sym->attr.flavor != FL_PROCEDURE)) | |
1944 | DECL_BY_REFERENCE (parm) = 1; | |
417ab240 | 1945 | |
faf28b3a | 1946 | gfc_finish_decl (parm); |
417ab240 JJ |
1947 | |
1948 | f->sym->backend_decl = parm; | |
1949 | ||
1950 | arglist = chainon (arglist, parm); | |
1d754240 | 1951 | typelist = TREE_CHAIN (typelist); |
6de9cd9a | 1952 | } |
1d754240 | 1953 | |
7861a5ce TB |
1954 | /* Add the hidden string length parameters, unless the procedure |
1955 | is bind(C). */ | |
1956 | if (!sym->attr.is_bind_c) | |
1957 | arglist = chainon (arglist, hidden_arglist); | |
417ab240 | 1958 | |
884d2e6b SE |
1959 | gcc_assert (hidden_typelist == NULL_TREE |
1960 | || TREE_VALUE (hidden_typelist) == void_type_node); | |
1d754240 | 1961 | DECL_ARGUMENTS (fndecl) = arglist; |
3d79abbd | 1962 | } |
1d754240 | 1963 | |
3d79abbd PB |
1964 | /* Do the setup necessary before generating the body of a function. */ |
1965 | ||
1966 | static void | |
1967 | trans_function_start (gfc_symbol * sym) | |
1968 | { | |
1969 | tree fndecl; | |
1970 | ||
1971 | fndecl = sym->backend_decl; | |
1972 | ||
f8d0aee5 | 1973 | /* Let GCC know the current scope is this function. */ |
3d79abbd PB |
1974 | current_function_decl = fndecl; |
1975 | ||
f8d0aee5 | 1976 | /* Let the world know what we're about to do. */ |
3d79abbd PB |
1977 | announce_function (fndecl); |
1978 | ||
1979 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1980 | { | |
f8d0aee5 | 1981 | /* Create RTL for function declaration. */ |
3d79abbd PB |
1982 | rest_of_decl_compilation (fndecl, 1, 0); |
1983 | } | |
1984 | ||
f8d0aee5 | 1985 | /* Create RTL for function definition. */ |
3d79abbd PB |
1986 | make_decl_rtl (fndecl); |
1987 | ||
3d79abbd PB |
1988 | init_function_start (fndecl); |
1989 | ||
1990 | /* Even though we're inside a function body, we still don't want to | |
1991 | call expand_expr to calculate the size of a variable-sized array. | |
1992 | We haven't necessarily assigned RTL to all variables yet, so it's | |
1993 | not safe to try to expand expressions involving them. */ | |
e3b5732b | 1994 | cfun->dont_save_pending_sizes_p = 1; |
3d79abbd | 1995 | |
f8d0aee5 | 1996 | /* function.c requires a push at the start of the function. */ |
3d79abbd PB |
1997 | pushlevel (0); |
1998 | } | |
1999 | ||
2000 | /* Create thunks for alternate entry points. */ | |
2001 | ||
2002 | static void | |
fb55ca75 | 2003 | build_entry_thunks (gfc_namespace * ns, bool global) |
3d79abbd PB |
2004 | { |
2005 | gfc_formal_arglist *formal; | |
2006 | gfc_formal_arglist *thunk_formal; | |
2007 | gfc_entry_list *el; | |
2008 | gfc_symbol *thunk_sym; | |
2009 | stmtblock_t body; | |
2010 | tree thunk_fndecl; | |
3d79abbd | 2011 | tree tmp; |
c8cc8542 | 2012 | locus old_loc; |
3d79abbd PB |
2013 | |
2014 | /* This should always be a toplevel function. */ | |
6e45f57b | 2015 | gcc_assert (current_function_decl == NULL_TREE); |
3d79abbd | 2016 | |
c8cc8542 | 2017 | gfc_get_backend_locus (&old_loc); |
3d79abbd PB |
2018 | for (el = ns->entries; el; el = el->next) |
2019 | { | |
3bb06db4 NF |
2020 | VEC(tree,gc) *args = NULL; |
2021 | VEC(tree,gc) *string_args = NULL; | |
2022 | ||
3d79abbd PB |
2023 | thunk_sym = el->sym; |
2024 | ||
fb55ca75 | 2025 | build_function_decl (thunk_sym, global); |
3d79abbd PB |
2026 | create_function_arglist (thunk_sym); |
2027 | ||
2028 | trans_function_start (thunk_sym); | |
2029 | ||
2030 | thunk_fndecl = thunk_sym->backend_decl; | |
2031 | ||
c7c79a09 | 2032 | gfc_init_block (&body); |
3d79abbd | 2033 | |
f8d0aee5 | 2034 | /* Pass extra parameter identifying this entry point. */ |
7d60be94 | 2035 | tmp = build_int_cst (gfc_array_index_type, el->id); |
3bb06db4 | 2036 | VEC_safe_push (tree, gc, args, tmp); |
3d79abbd | 2037 | |
d198b59a JJ |
2038 | if (thunk_sym->attr.function) |
2039 | { | |
2040 | if (gfc_return_by_reference (ns->proc_name)) | |
2041 | { | |
2042 | tree ref = DECL_ARGUMENTS (current_function_decl); | |
3bb06db4 | 2043 | VEC_safe_push (tree, gc, args, ref); |
d198b59a | 2044 | if (ns->proc_name->ts.type == BT_CHARACTER) |
910ad8de | 2045 | VEC_safe_push (tree, gc, args, DECL_CHAIN (ref)); |
d198b59a JJ |
2046 | } |
2047 | } | |
2048 | ||
3d79abbd PB |
2049 | for (formal = ns->proc_name->formal; formal; formal = formal->next) |
2050 | { | |
d198b59a JJ |
2051 | /* Ignore alternate returns. */ |
2052 | if (formal->sym == NULL) | |
2053 | continue; | |
2054 | ||
3d79abbd PB |
2055 | /* We don't have a clever way of identifying arguments, so resort to |
2056 | a brute-force search. */ | |
2057 | for (thunk_formal = thunk_sym->formal; | |
2058 | thunk_formal; | |
2059 | thunk_formal = thunk_formal->next) | |
2060 | { | |
2061 | if (thunk_formal->sym == formal->sym) | |
2062 | break; | |
2063 | } | |
2064 | ||
2065 | if (thunk_formal) | |
2066 | { | |
2067 | /* Pass the argument. */ | |
3e978d30 | 2068 | DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1; |
3bb06db4 | 2069 | VEC_safe_push (tree, gc, args, thunk_formal->sym->backend_decl); |
3d79abbd PB |
2070 | if (formal->sym->ts.type == BT_CHARACTER) |
2071 | { | |
bc21d315 | 2072 | tmp = thunk_formal->sym->ts.u.cl->backend_decl; |
3bb06db4 | 2073 | VEC_safe_push (tree, gc, string_args, tmp); |
3d79abbd PB |
2074 | } |
2075 | } | |
2076 | else | |
2077 | { | |
2078 | /* Pass NULL for a missing argument. */ | |
3bb06db4 | 2079 | VEC_safe_push (tree, gc, args, null_pointer_node); |
3d79abbd PB |
2080 | if (formal->sym->ts.type == BT_CHARACTER) |
2081 | { | |
c3238e32 | 2082 | tmp = build_int_cst (gfc_charlen_type_node, 0); |
3bb06db4 | 2083 | VEC_safe_push (tree, gc, string_args, tmp); |
3d79abbd PB |
2084 | } |
2085 | } | |
2086 | } | |
2087 | ||
2088 | /* Call the master function. */ | |
3bb06db4 | 2089 | VEC_safe_splice (tree, gc, args, string_args); |
3d79abbd | 2090 | tmp = ns->proc_name->backend_decl; |
3bb06db4 | 2091 | tmp = build_call_expr_loc_vec (input_location, tmp, args); |
d198b59a JJ |
2092 | if (ns->proc_name->attr.mixed_entry_master) |
2093 | { | |
2094 | tree union_decl, field; | |
2095 | tree master_type = TREE_TYPE (ns->proc_name->backend_decl); | |
2096 | ||
c2255bc4 AH |
2097 | union_decl = build_decl (input_location, |
2098 | VAR_DECL, get_identifier ("__result"), | |
d198b59a JJ |
2099 | TREE_TYPE (master_type)); |
2100 | DECL_ARTIFICIAL (union_decl) = 1; | |
2101 | DECL_EXTERNAL (union_decl) = 0; | |
2102 | TREE_PUBLIC (union_decl) = 0; | |
2103 | TREE_USED (union_decl) = 1; | |
2104 | layout_decl (union_decl, 0); | |
2105 | pushdecl (union_decl); | |
2106 | ||
2107 | DECL_CONTEXT (union_decl) = current_function_decl; | |
bc98ed60 TB |
2108 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
2109 | TREE_TYPE (union_decl), union_decl, tmp); | |
d198b59a JJ |
2110 | gfc_add_expr_to_block (&body, tmp); |
2111 | ||
2112 | for (field = TYPE_FIELDS (TREE_TYPE (union_decl)); | |
910ad8de | 2113 | field; field = DECL_CHAIN (field)) |
d198b59a JJ |
2114 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2115 | thunk_sym->result->name) == 0) | |
2116 | break; | |
2117 | gcc_assert (field != NULL_TREE); | |
bc98ed60 TB |
2118 | tmp = fold_build3_loc (input_location, COMPONENT_REF, |
2119 | TREE_TYPE (field), union_decl, field, | |
2120 | NULL_TREE); | |
2121 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, | |
44855d8c TS |
2122 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2123 | DECL_RESULT (current_function_decl), tmp); | |
d198b59a JJ |
2124 | tmp = build1_v (RETURN_EXPR, tmp); |
2125 | } | |
2126 | else if (TREE_TYPE (DECL_RESULT (current_function_decl)) | |
2127 | != void_type_node) | |
2128 | { | |
bc98ed60 | 2129 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, |
44855d8c TS |
2130 | TREE_TYPE (DECL_RESULT (current_function_decl)), |
2131 | DECL_RESULT (current_function_decl), tmp); | |
d198b59a JJ |
2132 | tmp = build1_v (RETURN_EXPR, tmp); |
2133 | } | |
3d79abbd PB |
2134 | gfc_add_expr_to_block (&body, tmp); |
2135 | ||
2136 | /* Finish off this function and send it for code generation. */ | |
2137 | DECL_SAVED_TREE (thunk_fndecl) = gfc_finish_block (&body); | |
c7c79a09 | 2138 | tmp = getdecls (); |
3d79abbd PB |
2139 | poplevel (1, 0, 1); |
2140 | BLOCK_SUPERCONTEXT (DECL_INITIAL (thunk_fndecl)) = thunk_fndecl; | |
c7c79a09 JJ |
2141 | DECL_SAVED_TREE (thunk_fndecl) |
2142 | = build3_v (BIND_EXPR, tmp, DECL_SAVED_TREE (thunk_fndecl), | |
2143 | DECL_INITIAL (thunk_fndecl)); | |
3d79abbd PB |
2144 | |
2145 | /* Output the GENERIC tree. */ | |
2146 | dump_function (TDI_original, thunk_fndecl); | |
2147 | ||
2148 | /* Store the end of the function, so that we get good line number | |
2149 | info for the epilogue. */ | |
2150 | cfun->function_end_locus = input_location; | |
2151 | ||
2152 | /* We're leaving the context of this function, so zap cfun. | |
2153 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
2154 | tree_rest_of_compilation. */ | |
db2960f4 | 2155 | set_cfun (NULL); |
3d79abbd PB |
2156 | |
2157 | current_function_decl = NULL_TREE; | |
2158 | ||
9618fb3c | 2159 | cgraph_finalize_function (thunk_fndecl, true); |
3d79abbd PB |
2160 | |
2161 | /* We share the symbols in the formal argument list with other entry | |
2162 | points and the master function. Clear them so that they are | |
2163 | recreated for each function. */ | |
2164 | for (formal = thunk_sym->formal; formal; formal = formal->next) | |
d198b59a JJ |
2165 | if (formal->sym != NULL) /* Ignore alternate returns. */ |
2166 | { | |
2167 | formal->sym->backend_decl = NULL_TREE; | |
2168 | if (formal->sym->ts.type == BT_CHARACTER) | |
bc21d315 | 2169 | formal->sym->ts.u.cl->backend_decl = NULL_TREE; |
d198b59a JJ |
2170 | } |
2171 | ||
2172 | if (thunk_sym->attr.function) | |
3d79abbd | 2173 | { |
d198b59a | 2174 | if (thunk_sym->ts.type == BT_CHARACTER) |
bc21d315 | 2175 | thunk_sym->ts.u.cl->backend_decl = NULL_TREE; |
d198b59a | 2176 | if (thunk_sym->result->ts.type == BT_CHARACTER) |
bc21d315 | 2177 | thunk_sym->result->ts.u.cl->backend_decl = NULL_TREE; |
3d79abbd PB |
2178 | } |
2179 | } | |
c8cc8542 PB |
2180 | |
2181 | gfc_set_backend_locus (&old_loc); | |
3d79abbd PB |
2182 | } |
2183 | ||
2184 | ||
2185 | /* Create a decl for a function, and create any thunks for alternate entry | |
fb55ca75 TB |
2186 | points. If global is true, generate the function in the global binding |
2187 | level, otherwise in the current binding level (which can be global). */ | |
3d79abbd PB |
2188 | |
2189 | void | |
fb55ca75 | 2190 | gfc_create_function_decl (gfc_namespace * ns, bool global) |
3d79abbd PB |
2191 | { |
2192 | /* Create a declaration for the master function. */ | |
fb55ca75 | 2193 | build_function_decl (ns->proc_name, global); |
3d79abbd | 2194 | |
f8d0aee5 | 2195 | /* Compile the entry thunks. */ |
3d79abbd | 2196 | if (ns->entries) |
fb55ca75 | 2197 | build_entry_thunks (ns, global); |
3d79abbd PB |
2198 | |
2199 | /* Now create the read argument list. */ | |
2200 | create_function_arglist (ns->proc_name); | |
2201 | } | |
2202 | ||
5f20c93a | 2203 | /* Return the decl used to hold the function return value. If |
da4c6ed8 | 2204 | parent_flag is set, the context is the parent_scope. */ |
6de9cd9a DN |
2205 | |
2206 | tree | |
5f20c93a | 2207 | gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag) |
6de9cd9a | 2208 | { |
5f20c93a PT |
2209 | tree decl; |
2210 | tree length; | |
2211 | tree this_fake_result_decl; | |
2212 | tree this_function_decl; | |
6de9cd9a DN |
2213 | |
2214 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
2215 | ||
5f20c93a PT |
2216 | if (parent_flag) |
2217 | { | |
2218 | this_fake_result_decl = parent_fake_result_decl; | |
2219 | this_function_decl = DECL_CONTEXT (current_function_decl); | |
2220 | } | |
2221 | else | |
2222 | { | |
2223 | this_fake_result_decl = current_fake_result_decl; | |
2224 | this_function_decl = current_function_decl; | |
2225 | } | |
2226 | ||
d198b59a | 2227 | if (sym |
5f20c93a | 2228 | && sym->ns->proc_name->backend_decl == this_function_decl |
417ab240 | 2229 | && sym->ns->proc_name->attr.entry_master |
d198b59a JJ |
2230 | && sym != sym->ns->proc_name) |
2231 | { | |
417ab240 | 2232 | tree t = NULL, var; |
5f20c93a PT |
2233 | if (this_fake_result_decl != NULL) |
2234 | for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t)) | |
417ab240 JJ |
2235 | if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0) |
2236 | break; | |
2237 | if (t) | |
2238 | return TREE_VALUE (t); | |
5f20c93a PT |
2239 | decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag); |
2240 | ||
2241 | if (parent_flag) | |
2242 | this_fake_result_decl = parent_fake_result_decl; | |
2243 | else | |
2244 | this_fake_result_decl = current_fake_result_decl; | |
2245 | ||
417ab240 | 2246 | if (decl && sym->ns->proc_name->attr.mixed_entry_master) |
d198b59a JJ |
2247 | { |
2248 | tree field; | |
2249 | ||
2250 | for (field = TYPE_FIELDS (TREE_TYPE (decl)); | |
910ad8de | 2251 | field; field = DECL_CHAIN (field)) |
d198b59a JJ |
2252 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), |
2253 | sym->name) == 0) | |
2254 | break; | |
2255 | ||
2256 | gcc_assert (field != NULL_TREE); | |
bc98ed60 TB |
2257 | decl = fold_build3_loc (input_location, COMPONENT_REF, |
2258 | TREE_TYPE (field), decl, field, NULL_TREE); | |
d198b59a | 2259 | } |
5f20c93a PT |
2260 | |
2261 | var = create_tmp_var_raw (TREE_TYPE (decl), sym->name); | |
2262 | if (parent_flag) | |
2263 | gfc_add_decl_to_parent_function (var); | |
2264 | else | |
2265 | gfc_add_decl_to_function (var); | |
2266 | ||
417ab240 JJ |
2267 | SET_DECL_VALUE_EXPR (var, decl); |
2268 | DECL_HAS_VALUE_EXPR_P (var) = 1; | |
4b8ae4db | 2269 | GFC_DECL_RESULT (var) = 1; |
5f20c93a PT |
2270 | |
2271 | TREE_CHAIN (this_fake_result_decl) | |
2272 | = tree_cons (get_identifier (sym->name), var, | |
2273 | TREE_CHAIN (this_fake_result_decl)); | |
417ab240 | 2274 | return var; |
d198b59a JJ |
2275 | } |
2276 | ||
5f20c93a PT |
2277 | if (this_fake_result_decl != NULL_TREE) |
2278 | return TREE_VALUE (this_fake_result_decl); | |
6de9cd9a DN |
2279 | |
2280 | /* Only when gfc_get_fake_result_decl is called by gfc_trans_return, | |
2281 | sym is NULL. */ | |
2282 | if (!sym) | |
2283 | return NULL_TREE; | |
2284 | ||
417ab240 | 2285 | if (sym->ts.type == BT_CHARACTER) |
6de9cd9a | 2286 | { |
bc21d315 | 2287 | if (sym->ts.u.cl->backend_decl == NULL_TREE) |
417ab240 JJ |
2288 | length = gfc_create_string_length (sym); |
2289 | else | |
bc21d315 | 2290 | length = sym->ts.u.cl->backend_decl; |
417ab240 JJ |
2291 | if (TREE_CODE (length) == VAR_DECL |
2292 | && DECL_CONTEXT (length) == NULL_TREE) | |
a7d6b765 | 2293 | gfc_add_decl_to_function (length); |
6de9cd9a DN |
2294 | } |
2295 | ||
2296 | if (gfc_return_by_reference (sym)) | |
2297 | { | |
5f20c93a | 2298 | decl = DECL_ARGUMENTS (this_function_decl); |
d198b59a | 2299 | |
5f20c93a | 2300 | if (sym->ns->proc_name->backend_decl == this_function_decl |
d198b59a | 2301 | && sym->ns->proc_name->attr.entry_master) |
910ad8de | 2302 | decl = DECL_CHAIN (decl); |
6de9cd9a DN |
2303 | |
2304 | TREE_USED (decl) = 1; | |
2305 | if (sym->as) | |
2306 | decl = gfc_build_dummy_array_decl (sym, decl); | |
2307 | } | |
2308 | else | |
2309 | { | |
2310 | sprintf (name, "__result_%.20s", | |
5f20c93a | 2311 | IDENTIFIER_POINTER (DECL_NAME (this_function_decl))); |
6de9cd9a | 2312 | |
da4c6ed8 | 2313 | if (!sym->attr.mixed_entry_master && sym->attr.function) |
88e09c79 | 2314 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
c2255bc4 | 2315 | VAR_DECL, get_identifier (name), |
da4c6ed8 TS |
2316 | gfc_sym_type (sym)); |
2317 | else | |
88e09c79 | 2318 | decl = build_decl (DECL_SOURCE_LOCATION (this_function_decl), |
c2255bc4 | 2319 | VAR_DECL, get_identifier (name), |
da4c6ed8 | 2320 | TREE_TYPE (TREE_TYPE (this_function_decl))); |
6de9cd9a DN |
2321 | DECL_ARTIFICIAL (decl) = 1; |
2322 | DECL_EXTERNAL (decl) = 0; | |
2323 | TREE_PUBLIC (decl) = 0; | |
2324 | TREE_USED (decl) = 1; | |
6c7a4dfd | 2325 | GFC_DECL_RESULT (decl) = 1; |
c55cebda | 2326 | TREE_ADDRESSABLE (decl) = 1; |
6de9cd9a DN |
2327 | |
2328 | layout_decl (decl, 0); | |
2329 | ||
5f20c93a PT |
2330 | if (parent_flag) |
2331 | gfc_add_decl_to_parent_function (decl); | |
2332 | else | |
2333 | gfc_add_decl_to_function (decl); | |
6de9cd9a DN |
2334 | } |
2335 | ||
5f20c93a PT |
2336 | if (parent_flag) |
2337 | parent_fake_result_decl = build_tree_list (NULL, decl); | |
2338 | else | |
2339 | current_fake_result_decl = build_tree_list (NULL, decl); | |
6de9cd9a DN |
2340 | |
2341 | return decl; | |
2342 | } | |
2343 | ||
2344 | ||
2345 | /* Builds a function decl. The remaining parameters are the types of the | |
2346 | function arguments. Negative nargs indicates a varargs function. */ | |
2347 | ||
0b7b376d RG |
2348 | static tree |
2349 | build_library_function_decl_1 (tree name, const char *spec, | |
2350 | tree rettype, int nargs, va_list p) | |
6de9cd9a DN |
2351 | { |
2352 | tree arglist; | |
2353 | tree argtype; | |
2354 | tree fntype; | |
2355 | tree fndecl; | |
6de9cd9a DN |
2356 | int n; |
2357 | ||
2358 | /* Library functions must be declared with global scope. */ | |
6e45f57b | 2359 | gcc_assert (current_function_decl == NULL_TREE); |
6de9cd9a | 2360 | |
6de9cd9a DN |
2361 | /* Create a list of the argument types. */ |
2362 | for (arglist = NULL_TREE, n = abs (nargs); n > 0; n--) | |
2363 | { | |
2364 | argtype = va_arg (p, tree); | |
2365 | arglist = gfc_chainon_list (arglist, argtype); | |
2366 | } | |
2367 | ||
2368 | if (nargs >= 0) | |
2369 | { | |
2370 | /* Terminate the list. */ | |
35d3d688 | 2371 | arglist = chainon (arglist, void_list_node); |
6de9cd9a DN |
2372 | } |
2373 | ||
2374 | /* Build the function type and decl. */ | |
2375 | fntype = build_function_type (rettype, arglist); | |
0b7b376d RG |
2376 | if (spec) |
2377 | { | |
2378 | tree attr_args = build_tree_list (NULL_TREE, | |
2379 | build_string (strlen (spec), spec)); | |
2380 | tree attrs = tree_cons (get_identifier ("fn spec"), | |
2381 | attr_args, TYPE_ATTRIBUTES (fntype)); | |
2382 | fntype = build_type_attribute_variant (fntype, attrs); | |
2383 | } | |
c2255bc4 AH |
2384 | fndecl = build_decl (input_location, |
2385 | FUNCTION_DECL, name, fntype); | |
6de9cd9a DN |
2386 | |
2387 | /* Mark this decl as external. */ | |
2388 | DECL_EXTERNAL (fndecl) = 1; | |
2389 | TREE_PUBLIC (fndecl) = 1; | |
2390 | ||
6de9cd9a DN |
2391 | pushdecl (fndecl); |
2392 | ||
0e6df31e | 2393 | rest_of_decl_compilation (fndecl, 1, 0); |
6de9cd9a DN |
2394 | |
2395 | return fndecl; | |
2396 | } | |
2397 | ||
0b7b376d RG |
2398 | /* Builds a function decl. The remaining parameters are the types of the |
2399 | function arguments. Negative nargs indicates a varargs function. */ | |
2400 | ||
2401 | tree | |
2402 | gfc_build_library_function_decl (tree name, tree rettype, int nargs, ...) | |
2403 | { | |
2404 | tree ret; | |
2405 | va_list args; | |
2406 | va_start (args, nargs); | |
2407 | ret = build_library_function_decl_1 (name, NULL, rettype, nargs, args); | |
2408 | va_end (args); | |
2409 | return ret; | |
2410 | } | |
2411 | ||
2412 | /* Builds a function decl. The remaining parameters are the types of the | |
2413 | function arguments. Negative nargs indicates a varargs function. | |
2414 | The SPEC parameter specifies the function argument and return type | |
2415 | specification according to the fnspec function type attribute. */ | |
2416 | ||
3f34855a | 2417 | tree |
0b7b376d RG |
2418 | gfc_build_library_function_decl_with_spec (tree name, const char *spec, |
2419 | tree rettype, int nargs, ...) | |
2420 | { | |
2421 | tree ret; | |
2422 | va_list args; | |
2423 | va_start (args, nargs); | |
2424 | ret = build_library_function_decl_1 (name, spec, rettype, nargs, args); | |
2425 | va_end (args); | |
2426 | return ret; | |
2427 | } | |
2428 | ||
6de9cd9a DN |
2429 | static void |
2430 | gfc_build_intrinsic_function_decls (void) | |
2431 | { | |
e2cad04b RH |
2432 | tree gfc_int4_type_node = gfc_get_int_type (4); |
2433 | tree gfc_int8_type_node = gfc_get_int_type (8); | |
644cb69f | 2434 | tree gfc_int16_type_node = gfc_get_int_type (16); |
e2cad04b | 2435 | tree gfc_logical4_type_node = gfc_get_logical_type (4); |
374929b2 FXC |
2436 | tree pchar1_type_node = gfc_get_pchar_type (1); |
2437 | tree pchar4_type_node = gfc_get_pchar_type (4); | |
e2cad04b | 2438 | |
6de9cd9a | 2439 | /* String functions. */ |
6368f166 DF |
2440 | gfor_fndecl_compare_string = gfc_build_library_function_decl_with_spec ( |
2441 | get_identifier (PREFIX("compare_string")), "..R.R", | |
2442 | integer_type_node, 4, gfc_charlen_type_node, pchar1_type_node, | |
2443 | gfc_charlen_type_node, pchar1_type_node); | |
4ca4be7f | 2444 | DECL_PURE_P (gfor_fndecl_compare_string) = 1; |
22b139e1 | 2445 | TREE_NOTHROW (gfor_fndecl_compare_string) = 1; |
6368f166 DF |
2446 | |
2447 | gfor_fndecl_concat_string = gfc_build_library_function_decl_with_spec ( | |
2448 | get_identifier (PREFIX("concat_string")), "..W.R.R", | |
2449 | void_type_node, 6, gfc_charlen_type_node, pchar1_type_node, | |
2450 | gfc_charlen_type_node, pchar1_type_node, | |
2451 | gfc_charlen_type_node, pchar1_type_node); | |
22b139e1 | 2452 | TREE_NOTHROW (gfor_fndecl_concat_string) = 1; |
6368f166 DF |
2453 | |
2454 | gfor_fndecl_string_len_trim = gfc_build_library_function_decl_with_spec ( | |
2455 | get_identifier (PREFIX("string_len_trim")), "..R", | |
2456 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar1_type_node); | |
4ca4be7f | 2457 | DECL_PURE_P (gfor_fndecl_string_len_trim) = 1; |
22b139e1 | 2458 | TREE_NOTHROW (gfor_fndecl_string_len_trim) = 1; |
6368f166 DF |
2459 | |
2460 | gfor_fndecl_string_index = gfc_build_library_function_decl_with_spec ( | |
2461 | get_identifier (PREFIX("string_index")), "..R.R.", | |
2462 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2463 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2464 | DECL_PURE_P (gfor_fndecl_string_index) = 1; |
22b139e1 | 2465 | TREE_NOTHROW (gfor_fndecl_string_index) = 1; |
6368f166 DF |
2466 | |
2467 | gfor_fndecl_string_scan = gfc_build_library_function_decl_with_spec ( | |
2468 | get_identifier (PREFIX("string_scan")), "..R.R.", | |
2469 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2470 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2471 | DECL_PURE_P (gfor_fndecl_string_scan) = 1; |
22b139e1 | 2472 | TREE_NOTHROW (gfor_fndecl_string_scan) = 1; |
6368f166 DF |
2473 | |
2474 | gfor_fndecl_string_verify = gfc_build_library_function_decl_with_spec ( | |
2475 | get_identifier (PREFIX("string_verify")), "..R.R.", | |
2476 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar1_type_node, | |
2477 | gfc_charlen_type_node, pchar1_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2478 | DECL_PURE_P (gfor_fndecl_string_verify) = 1; |
22b139e1 | 2479 | TREE_NOTHROW (gfor_fndecl_string_verify) = 1; |
6368f166 DF |
2480 | |
2481 | gfor_fndecl_string_trim = gfc_build_library_function_decl_with_spec ( | |
2482 | get_identifier (PREFIX("string_trim")), ".Ww.R", | |
2483 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2484 | build_pointer_type (pchar1_type_node), gfc_charlen_type_node, | |
2485 | pchar1_type_node); | |
2486 | ||
2487 | gfor_fndecl_string_minmax = gfc_build_library_function_decl_with_spec ( | |
2488 | get_identifier (PREFIX("string_minmax")), ".Ww.R", | |
2489 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2490 | build_pointer_type (pchar1_type_node), integer_type_node, | |
2491 | integer_type_node); | |
2492 | ||
2493 | gfor_fndecl_adjustl = gfc_build_library_function_decl_with_spec ( | |
2494 | get_identifier (PREFIX("adjustl")), ".W.R", | |
2495 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2496 | pchar1_type_node); | |
22b139e1 | 2497 | TREE_NOTHROW (gfor_fndecl_adjustl) = 1; |
6368f166 DF |
2498 | |
2499 | gfor_fndecl_adjustr = gfc_build_library_function_decl_with_spec ( | |
2500 | get_identifier (PREFIX("adjustr")), ".W.R", | |
2501 | void_type_node, 3, pchar1_type_node, gfc_charlen_type_node, | |
2502 | pchar1_type_node); | |
22b139e1 | 2503 | TREE_NOTHROW (gfor_fndecl_adjustr) = 1; |
6368f166 DF |
2504 | |
2505 | gfor_fndecl_select_string = gfc_build_library_function_decl_with_spec ( | |
2506 | get_identifier (PREFIX("select_string")), ".R.R.", | |
2507 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2508 | pchar1_type_node, gfc_charlen_type_node); | |
4ca4be7f | 2509 | DECL_PURE_P (gfor_fndecl_select_string) = 1; |
22b139e1 | 2510 | TREE_NOTHROW (gfor_fndecl_select_string) = 1; |
6368f166 DF |
2511 | |
2512 | gfor_fndecl_compare_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2513 | get_identifier (PREFIX("compare_string_char4")), "..R.R", | |
2514 | integer_type_node, 4, gfc_charlen_type_node, pchar4_type_node, | |
2515 | gfc_charlen_type_node, pchar4_type_node); | |
4ca4be7f | 2516 | DECL_PURE_P (gfor_fndecl_compare_string_char4) = 1; |
22b139e1 | 2517 | TREE_NOTHROW (gfor_fndecl_compare_string_char4) = 1; |
6368f166 DF |
2518 | |
2519 | gfor_fndecl_concat_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2520 | get_identifier (PREFIX("concat_string_char4")), "..W.R.R", | |
2521 | void_type_node, 6, gfc_charlen_type_node, pchar4_type_node, | |
2522 | gfc_charlen_type_node, pchar4_type_node, gfc_charlen_type_node, | |
2523 | pchar4_type_node); | |
22b139e1 | 2524 | TREE_NOTHROW (gfor_fndecl_concat_string_char4) = 1; |
6368f166 DF |
2525 | |
2526 | gfor_fndecl_string_len_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2527 | get_identifier (PREFIX("string_len_trim_char4")), "..R", | |
2528 | gfc_charlen_type_node, 2, gfc_charlen_type_node, pchar4_type_node); | |
4ca4be7f | 2529 | DECL_PURE_P (gfor_fndecl_string_len_trim_char4) = 1; |
22b139e1 | 2530 | TREE_NOTHROW (gfor_fndecl_string_len_trim_char4) = 1; |
6368f166 DF |
2531 | |
2532 | gfor_fndecl_string_index_char4 = gfc_build_library_function_decl_with_spec ( | |
2533 | get_identifier (PREFIX("string_index_char4")), "..R.R.", | |
2534 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2535 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2536 | DECL_PURE_P (gfor_fndecl_string_index_char4) = 1; |
22b139e1 | 2537 | TREE_NOTHROW (gfor_fndecl_string_index_char4) = 1; |
6368f166 DF |
2538 | |
2539 | gfor_fndecl_string_scan_char4 = gfc_build_library_function_decl_with_spec ( | |
2540 | get_identifier (PREFIX("string_scan_char4")), "..R.R.", | |
2541 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2542 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2543 | DECL_PURE_P (gfor_fndecl_string_scan_char4) = 1; |
22b139e1 | 2544 | TREE_NOTHROW (gfor_fndecl_string_scan_char4) = 1; |
6368f166 DF |
2545 | |
2546 | gfor_fndecl_string_verify_char4 = gfc_build_library_function_decl_with_spec ( | |
2547 | get_identifier (PREFIX("string_verify_char4")), "..R.R.", | |
2548 | gfc_charlen_type_node, 5, gfc_charlen_type_node, pchar4_type_node, | |
2549 | gfc_charlen_type_node, pchar4_type_node, gfc_logical4_type_node); | |
4ca4be7f | 2550 | DECL_PURE_P (gfor_fndecl_string_verify_char4) = 1; |
22b139e1 | 2551 | TREE_NOTHROW (gfor_fndecl_string_verify_char4) = 1; |
6368f166 DF |
2552 | |
2553 | gfor_fndecl_string_trim_char4 = gfc_build_library_function_decl_with_spec ( | |
2554 | get_identifier (PREFIX("string_trim_char4")), ".Ww.R", | |
2555 | void_type_node, 4, build_pointer_type (gfc_charlen_type_node), | |
2556 | build_pointer_type (pchar4_type_node), gfc_charlen_type_node, | |
2557 | pchar4_type_node); | |
2558 | ||
2559 | gfor_fndecl_string_minmax_char4 = gfc_build_library_function_decl_with_spec ( | |
2560 | get_identifier (PREFIX("string_minmax_char4")), ".Ww.R", | |
2561 | void_type_node, -4, build_pointer_type (gfc_charlen_type_node), | |
2562 | build_pointer_type (pchar4_type_node), integer_type_node, | |
2563 | integer_type_node); | |
2564 | ||
2565 | gfor_fndecl_adjustl_char4 = gfc_build_library_function_decl_with_spec ( | |
2566 | get_identifier (PREFIX("adjustl_char4")), ".W.R", | |
2567 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2568 | pchar4_type_node); | |
22b139e1 | 2569 | TREE_NOTHROW (gfor_fndecl_adjustl_char4) = 1; |
6368f166 DF |
2570 | |
2571 | gfor_fndecl_adjustr_char4 = gfc_build_library_function_decl_with_spec ( | |
2572 | get_identifier (PREFIX("adjustr_char4")), ".W.R", | |
2573 | void_type_node, 3, pchar4_type_node, gfc_charlen_type_node, | |
2574 | pchar4_type_node); | |
22b139e1 | 2575 | TREE_NOTHROW (gfor_fndecl_adjustr_char4) = 1; |
6368f166 DF |
2576 | |
2577 | gfor_fndecl_select_string_char4 = gfc_build_library_function_decl_with_spec ( | |
2578 | get_identifier (PREFIX("select_string_char4")), ".R.R.", | |
2579 | integer_type_node, 4, pvoid_type_node, integer_type_node, | |
2580 | pvoid_type_node, gfc_charlen_type_node); | |
4ca4be7f | 2581 | DECL_PURE_P (gfor_fndecl_select_string_char4) = 1; |
22b139e1 | 2582 | TREE_NOTHROW (gfor_fndecl_select_string_char4) = 1; |
d393bbd7 FXC |
2583 | |
2584 | ||
2585 | /* Conversion between character kinds. */ | |
2586 | ||
6368f166 DF |
2587 | gfor_fndecl_convert_char1_to_char4 = gfc_build_library_function_decl_with_spec ( |
2588 | get_identifier (PREFIX("convert_char1_to_char4")), ".w.R", | |
2589 | void_type_node, 3, build_pointer_type (pchar4_type_node), | |
2590 | gfc_charlen_type_node, pchar1_type_node); | |
d393bbd7 | 2591 | |
6368f166 DF |
2592 | gfor_fndecl_convert_char4_to_char1 = gfc_build_library_function_decl_with_spec ( |
2593 | get_identifier (PREFIX("convert_char4_to_char1")), ".w.R", | |
2594 | void_type_node, 3, build_pointer_type (pchar1_type_node), | |
2595 | gfc_charlen_type_node, pchar4_type_node); | |
d393bbd7 | 2596 | |
374929b2 | 2597 | /* Misc. functions. */ |
2263c775 | 2598 | |
6368f166 DF |
2599 | gfor_fndecl_ttynam = gfc_build_library_function_decl_with_spec ( |
2600 | get_identifier (PREFIX("ttynam")), ".W", | |
2601 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
2602 | integer_type_node); | |
2603 | ||
2604 | gfor_fndecl_fdate = gfc_build_library_function_decl_with_spec ( | |
2605 | get_identifier (PREFIX("fdate")), ".W", | |
2606 | void_type_node, 2, pchar_type_node, gfc_charlen_type_node); | |
2607 | ||
2608 | gfor_fndecl_ctime = gfc_build_library_function_decl_with_spec ( | |
2609 | get_identifier (PREFIX("ctime")), ".W", | |
2610 | void_type_node, 3, pchar_type_node, gfc_charlen_type_node, | |
2611 | gfc_int8_type_node); | |
2612 | ||
2613 | gfor_fndecl_sc_kind = gfc_build_library_function_decl_with_spec ( | |
2614 | get_identifier (PREFIX("selected_char_kind")), "..R", | |
2615 | gfc_int4_type_node, 2, gfc_charlen_type_node, pchar_type_node); | |
4ca4be7f | 2616 | DECL_PURE_P (gfor_fndecl_sc_kind) = 1; |
22b139e1 | 2617 | TREE_NOTHROW (gfor_fndecl_sc_kind) = 1; |
6368f166 DF |
2618 | |
2619 | gfor_fndecl_si_kind = gfc_build_library_function_decl_with_spec ( | |
2620 | get_identifier (PREFIX("selected_int_kind")), ".R", | |
2621 | gfc_int4_type_node, 1, pvoid_type_node); | |
4ca4be7f | 2622 | DECL_PURE_P (gfor_fndecl_si_kind) = 1; |
22b139e1 | 2623 | TREE_NOTHROW (gfor_fndecl_si_kind) = 1; |
6368f166 DF |
2624 | |
2625 | gfor_fndecl_sr_kind = gfc_build_library_function_decl_with_spec ( | |
2626 | get_identifier (PREFIX("selected_real_kind2008")), ".RR", | |
2627 | gfc_int4_type_node, 3, pvoid_type_node, pvoid_type_node, | |
2628 | pvoid_type_node); | |
4ca4be7f | 2629 | DECL_PURE_P (gfor_fndecl_sr_kind) = 1; |
22b139e1 | 2630 | TREE_NOTHROW (gfor_fndecl_sr_kind) = 1; |
6de9cd9a | 2631 | |
6de9cd9a | 2632 | /* Power functions. */ |
5b200ac2 | 2633 | { |
644cb69f FXC |
2634 | tree ctype, rtype, itype, jtype; |
2635 | int rkind, ikind, jkind; | |
2636 | #define NIKINDS 3 | |
2637 | #define NRKINDS 4 | |
2638 | static int ikinds[NIKINDS] = {4, 8, 16}; | |
2639 | static int rkinds[NRKINDS] = {4, 8, 10, 16}; | |
2640 | char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */ | |
2641 | ||
2642 | for (ikind=0; ikind < NIKINDS; ikind++) | |
5b200ac2 | 2643 | { |
644cb69f FXC |
2644 | itype = gfc_get_int_type (ikinds[ikind]); |
2645 | ||
2646 | for (jkind=0; jkind < NIKINDS; jkind++) | |
2647 | { | |
2648 | jtype = gfc_get_int_type (ikinds[jkind]); | |
2649 | if (itype && jtype) | |
2650 | { | |
2651 | sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind], | |
2652 | ikinds[jkind]); | |
2653 | gfor_fndecl_math_powi[jkind][ikind].integer = | |
2654 | gfc_build_library_function_decl (get_identifier (name), | |
2655 | jtype, 2, jtype, itype); | |
67fdae36 | 2656 | TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
22b139e1 | 2657 | TREE_NOTHROW (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
644cb69f FXC |
2658 | } |
2659 | } | |
2660 | ||
2661 | for (rkind = 0; rkind < NRKINDS; rkind ++) | |
5b200ac2 | 2662 | { |
644cb69f FXC |
2663 | rtype = gfc_get_real_type (rkinds[rkind]); |
2664 | if (rtype && itype) | |
2665 | { | |
2666 | sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind], | |
2667 | ikinds[ikind]); | |
2668 | gfor_fndecl_math_powi[rkind][ikind].real = | |
2669 | gfc_build_library_function_decl (get_identifier (name), | |
2670 | rtype, 2, rtype, itype); | |
67fdae36 | 2671 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
22b139e1 | 2672 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
644cb69f FXC |
2673 | } |
2674 | ||
2675 | ctype = gfc_get_complex_type (rkinds[rkind]); | |
2676 | if (ctype && itype) | |
2677 | { | |
2678 | sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind], | |
2679 | ikinds[ikind]); | |
2680 | gfor_fndecl_math_powi[rkind][ikind].cmplx = | |
2681 | gfc_build_library_function_decl (get_identifier (name), | |
2682 | ctype, 2,ctype, itype); | |
67fdae36 | 2683 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
22b139e1 | 2684 | TREE_NOTHROW (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
644cb69f | 2685 | } |
5b200ac2 FW |
2686 | } |
2687 | } | |
644cb69f FXC |
2688 | #undef NIKINDS |
2689 | #undef NRKINDS | |
5b200ac2 FW |
2690 | } |
2691 | ||
6368f166 DF |
2692 | gfor_fndecl_math_ishftc4 = gfc_build_library_function_decl ( |
2693 | get_identifier (PREFIX("ishftc4")), | |
2694 | gfc_int4_type_node, 3, gfc_int4_type_node, gfc_int4_type_node, | |
2695 | gfc_int4_type_node); | |
22b139e1 JJ |
2696 | TREE_READONLY (gfor_fndecl_math_ishftc4) = 1; |
2697 | TREE_NOTHROW (gfor_fndecl_math_ishftc4) = 1; | |
6368f166 DF |
2698 | |
2699 | gfor_fndecl_math_ishftc8 = gfc_build_library_function_decl ( | |
2700 | get_identifier (PREFIX("ishftc8")), | |
2701 | gfc_int8_type_node, 3, gfc_int8_type_node, gfc_int4_type_node, | |
2702 | gfc_int4_type_node); | |
22b139e1 JJ |
2703 | TREE_READONLY (gfor_fndecl_math_ishftc8) = 1; |
2704 | TREE_NOTHROW (gfor_fndecl_math_ishftc8) = 1; | |
6368f166 | 2705 | |
644cb69f | 2706 | if (gfc_int16_type_node) |
22b139e1 JJ |
2707 | { |
2708 | gfor_fndecl_math_ishftc16 = gfc_build_library_function_decl ( | |
6368f166 DF |
2709 | get_identifier (PREFIX("ishftc16")), |
2710 | gfc_int16_type_node, 3, gfc_int16_type_node, gfc_int4_type_node, | |
2711 | gfc_int4_type_node); | |
22b139e1 JJ |
2712 | TREE_READONLY (gfor_fndecl_math_ishftc16) = 1; |
2713 | TREE_NOTHROW (gfor_fndecl_math_ishftc16) = 1; | |
2714 | } | |
644cb69f | 2715 | |
5a0aad31 FXC |
2716 | /* BLAS functions. */ |
2717 | { | |
dd52ecb0 | 2718 | tree pint = build_pointer_type (integer_type_node); |
5a0aad31 FXC |
2719 | tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind)); |
2720 | tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind)); | |
2721 | tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind)); | |
2722 | tree pz = build_pointer_type | |
2723 | (gfc_get_complex_type (gfc_default_double_kind)); | |
2724 | ||
2725 | gfor_fndecl_sgemm = gfc_build_library_function_decl | |
2726 | (get_identifier | |
2727 | (gfc_option.flag_underscoring ? "sgemm_" | |
2728 | : "sgemm"), | |
2729 | void_type_node, 15, pchar_type_node, | |
2730 | pchar_type_node, pint, pint, pint, ps, ps, pint, | |
dd52ecb0 JB |
2731 | ps, pint, ps, ps, pint, integer_type_node, |
2732 | integer_type_node); | |
5a0aad31 FXC |
2733 | gfor_fndecl_dgemm = gfc_build_library_function_decl |
2734 | (get_identifier | |
2735 | (gfc_option.flag_underscoring ? "dgemm_" | |
2736 | : "dgemm"), | |
2737 | void_type_node, 15, pchar_type_node, | |
2738 | pchar_type_node, pint, pint, pint, pd, pd, pint, | |
dd52ecb0 JB |
2739 | pd, pint, pd, pd, pint, integer_type_node, |
2740 | integer_type_node); | |
5a0aad31 FXC |
2741 | gfor_fndecl_cgemm = gfc_build_library_function_decl |
2742 | (get_identifier | |
2743 | (gfc_option.flag_underscoring ? "cgemm_" | |
2744 | : "cgemm"), | |
2745 | void_type_node, 15, pchar_type_node, | |
2746 | pchar_type_node, pint, pint, pint, pc, pc, pint, | |
dd52ecb0 JB |
2747 | pc, pint, pc, pc, pint, integer_type_node, |
2748 | integer_type_node); | |
5a0aad31 FXC |
2749 | gfor_fndecl_zgemm = gfc_build_library_function_decl |
2750 | (get_identifier | |
2751 | (gfc_option.flag_underscoring ? "zgemm_" | |
2752 | : "zgemm"), | |
2753 | void_type_node, 15, pchar_type_node, | |
2754 | pchar_type_node, pint, pint, pint, pz, pz, pint, | |
dd52ecb0 JB |
2755 | pz, pint, pz, pz, pint, integer_type_node, |
2756 | integer_type_node); | |
5a0aad31 FXC |
2757 | } |
2758 | ||
6de9cd9a | 2759 | /* Other functions. */ |
6368f166 DF |
2760 | gfor_fndecl_size0 = gfc_build_library_function_decl_with_spec ( |
2761 | get_identifier (PREFIX("size0")), ".R", | |
2762 | gfc_array_index_type, 1, pvoid_type_node); | |
4ca4be7f | 2763 | DECL_PURE_P (gfor_fndecl_size0) = 1; |
22b139e1 | 2764 | TREE_NOTHROW (gfor_fndecl_size0) = 1; |
6368f166 DF |
2765 | |
2766 | gfor_fndecl_size1 = gfc_build_library_function_decl_with_spec ( | |
2767 | get_identifier (PREFIX("size1")), ".R", | |
2768 | gfc_array_index_type, 2, pvoid_type_node, gfc_array_index_type); | |
4ca4be7f | 2769 | DECL_PURE_P (gfor_fndecl_size1) = 1; |
22b139e1 | 2770 | TREE_NOTHROW (gfor_fndecl_size1) = 1; |
6368f166 DF |
2771 | |
2772 | gfor_fndecl_iargc = gfc_build_library_function_decl ( | |
2773 | get_identifier (PREFIX ("iargc")), gfc_int4_type_node, 0); | |
22b139e1 | 2774 | TREE_NOTHROW (gfor_fndecl_iargc) = 1; |
6de9cd9a DN |
2775 | } |
2776 | ||
2777 | ||
2778 | /* Make prototypes for runtime library functions. */ | |
2779 | ||
2780 | void | |
2781 | gfc_build_builtin_function_decls (void) | |
2782 | { | |
e2cad04b | 2783 | tree gfc_int4_type_node = gfc_get_int_type (4); |
6de9cd9a | 2784 | |
6368f166 DF |
2785 | gfor_fndecl_stop_numeric = gfc_build_library_function_decl ( |
2786 | get_identifier (PREFIX("stop_numeric")), | |
2787 | void_type_node, 1, gfc_int4_type_node); | |
6d1b0f92 | 2788 | /* STOP doesn't return. */ |
eed61baa TK |
2789 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1; |
2790 | ||
6368f166 DF |
2791 | gfor_fndecl_stop_string = gfc_build_library_function_decl_with_spec ( |
2792 | get_identifier (PREFIX("stop_string")), ".R.", | |
2793 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
6d1b0f92 | 2794 | /* STOP doesn't return. */ |
6368f166 | 2795 | TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1; |
4ca4be7f | 2796 | |
6368f166 DF |
2797 | gfor_fndecl_error_stop_numeric = gfc_build_library_function_decl ( |
2798 | get_identifier (PREFIX("error_stop_numeric")), | |
2799 | void_type_node, 1, gfc_int4_type_node); | |
6d1b0f92 JD |
2800 | /* ERROR STOP doesn't return. */ |
2801 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_numeric) = 1; | |
2802 | ||
6368f166 DF |
2803 | gfor_fndecl_error_stop_string = gfc_build_library_function_decl_with_spec ( |
2804 | get_identifier (PREFIX("error_stop_string")), ".R.", | |
2805 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
d0a4a61c TB |
2806 | /* ERROR STOP doesn't return. */ |
2807 | TREE_THIS_VOLATILE (gfor_fndecl_error_stop_string) = 1; | |
2808 | ||
6368f166 DF |
2809 | gfor_fndecl_pause_numeric = gfc_build_library_function_decl ( |
2810 | get_identifier (PREFIX("pause_numeric")), | |
2811 | void_type_node, 1, gfc_int4_type_node); | |
6d1b0f92 | 2812 | |
6368f166 DF |
2813 | gfor_fndecl_pause_string = gfc_build_library_function_decl_with_spec ( |
2814 | get_identifier (PREFIX("pause_string")), ".R.", | |
2815 | void_type_node, 2, pchar_type_node, gfc_int4_type_node); | |
6de9cd9a | 2816 | |
6368f166 DF |
2817 | gfor_fndecl_runtime_error = gfc_build_library_function_decl_with_spec ( |
2818 | get_identifier (PREFIX("runtime_error")), ".R", | |
2819 | void_type_node, -1, pchar_type_node); | |
16275f18 SB |
2820 | /* The runtime_error function does not return. */ |
2821 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1; | |
6de9cd9a | 2822 | |
6368f166 DF |
2823 | gfor_fndecl_runtime_error_at = gfc_build_library_function_decl_with_spec ( |
2824 | get_identifier (PREFIX("runtime_error_at")), ".RR", | |
2825 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
f96d606f JD |
2826 | /* The runtime_error_at function does not return. */ |
2827 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1; | |
2828 | ||
6368f166 DF |
2829 | gfor_fndecl_runtime_warning_at = gfc_build_library_function_decl_with_spec ( |
2830 | get_identifier (PREFIX("runtime_warning_at")), ".RR", | |
2831 | void_type_node, -2, pchar_type_node, pchar_type_node); | |
2832 | ||
2833 | gfor_fndecl_generate_error = gfc_build_library_function_decl_with_spec ( | |
2834 | get_identifier (PREFIX("generate_error")), ".R.R", | |
2835 | void_type_node, 3, pvoid_type_node, integer_type_node, | |
2836 | pchar_type_node); | |
2837 | ||
2838 | gfor_fndecl_os_error = gfc_build_library_function_decl_with_spec ( | |
2839 | get_identifier (PREFIX("os_error")), ".R", | |
2840 | void_type_node, 1, pchar_type_node); | |
1529b8d9 FXC |
2841 | /* The runtime_error function does not return. */ |
2842 | TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1; | |
2843 | ||
6368f166 DF |
2844 | gfor_fndecl_set_args = gfc_build_library_function_decl ( |
2845 | get_identifier (PREFIX("set_args")), | |
2846 | void_type_node, 2, integer_type_node, | |
2847 | build_pointer_type (pchar_type_node)); | |
092231a8 | 2848 | |
6368f166 DF |
2849 | gfor_fndecl_set_fpe = gfc_build_library_function_decl ( |
2850 | get_identifier (PREFIX("set_fpe")), | |
2851 | void_type_node, 1, integer_type_node); | |
944b8b35 | 2852 | |
68d2e027 | 2853 | /* Keep the array dimension in sync with the call, later in this file. */ |
6368f166 DF |
2854 | gfor_fndecl_set_options = gfc_build_library_function_decl_with_spec ( |
2855 | get_identifier (PREFIX("set_options")), "..R", | |
2856 | void_type_node, 2, integer_type_node, | |
2857 | build_pointer_type (integer_type_node)); | |
8b67b708 | 2858 | |
6368f166 DF |
2859 | gfor_fndecl_set_convert = gfc_build_library_function_decl ( |
2860 | get_identifier (PREFIX("set_convert")), | |
2861 | void_type_node, 1, integer_type_node); | |
eaa90d25 | 2862 | |
6368f166 DF |
2863 | gfor_fndecl_set_record_marker = gfc_build_library_function_decl ( |
2864 | get_identifier (PREFIX("set_record_marker")), | |
2865 | void_type_node, 1, integer_type_node); | |
d67ab5ee | 2866 | |
6368f166 DF |
2867 | gfor_fndecl_set_max_subrecord_length = gfc_build_library_function_decl ( |
2868 | get_identifier (PREFIX("set_max_subrecord_length")), | |
2869 | void_type_node, 1, integer_type_node); | |
07b3bbf2 | 2870 | |
0b7b376d | 2871 | gfor_fndecl_in_pack = gfc_build_library_function_decl_with_spec ( |
6368f166 DF |
2872 | get_identifier (PREFIX("internal_pack")), ".r", |
2873 | pvoid_type_node, 1, pvoid_type_node); | |
6de9cd9a | 2874 | |
0b7b376d | 2875 | gfor_fndecl_in_unpack = gfc_build_library_function_decl_with_spec ( |
6368f166 DF |
2876 | get_identifier (PREFIX("internal_unpack")), ".wR", |
2877 | void_type_node, 2, pvoid_type_node, pvoid_type_node); | |
2878 | ||
2879 | gfor_fndecl_associated = gfc_build_library_function_decl_with_spec ( | |
2880 | get_identifier (PREFIX("associated")), ".RR", | |
2881 | integer_type_node, 2, ppvoid_type_node, ppvoid_type_node); | |
4ca4be7f | 2882 | DECL_PURE_P (gfor_fndecl_associated) = 1; |
22b139e1 | 2883 | TREE_NOTHROW (gfor_fndecl_associated) = 1; |
6de9cd9a DN |
2884 | |
2885 | gfc_build_intrinsic_function_decls (); | |
2886 | gfc_build_intrinsic_lib_fndecls (); | |
2887 | gfc_build_io_library_fndecls (); | |
2888 | } | |
2889 | ||
2890 | ||
1f2959f0 | 2891 | /* Evaluate the length of dummy character variables. */ |
6de9cd9a | 2892 | |
0019d498 DK |
2893 | static void |
2894 | gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, | |
2895 | gfc_wrapped_block *block) | |
6de9cd9a | 2896 | { |
0019d498 | 2897 | stmtblock_t init; |
6de9cd9a | 2898 | |
faf28b3a | 2899 | gfc_finish_decl (cl->backend_decl); |
6de9cd9a | 2900 | |
0019d498 | 2901 | gfc_start_block (&init); |
6de9cd9a DN |
2902 | |
2903 | /* Evaluate the string length expression. */ | |
0019d498 | 2904 | gfc_conv_string_length (cl, NULL, &init); |
417ab240 | 2905 | |
0019d498 | 2906 | gfc_trans_vla_type_sizes (sym, &init); |
417ab240 | 2907 | |
0019d498 | 2908 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
6de9cd9a DN |
2909 | } |
2910 | ||
2911 | ||
2912 | /* Allocate and cleanup an automatic character variable. */ | |
2913 | ||
0019d498 DK |
2914 | static void |
2915 | gfc_trans_auto_character_variable (gfc_symbol * sym, gfc_wrapped_block * block) | |
6de9cd9a | 2916 | { |
0019d498 | 2917 | stmtblock_t init; |
6de9cd9a | 2918 | tree decl; |
6de9cd9a DN |
2919 | tree tmp; |
2920 | ||
6e45f57b | 2921 | gcc_assert (sym->backend_decl); |
bc21d315 | 2922 | gcc_assert (sym->ts.u.cl && sym->ts.u.cl->length); |
6de9cd9a | 2923 | |
0019d498 | 2924 | gfc_start_block (&init); |
6de9cd9a DN |
2925 | |
2926 | /* Evaluate the string length expression. */ | |
0019d498 | 2927 | gfc_conv_string_length (sym->ts.u.cl, NULL, &init); |
6de9cd9a | 2928 | |
0019d498 | 2929 | gfc_trans_vla_type_sizes (sym, &init); |
417ab240 | 2930 | |
6de9cd9a DN |
2931 | decl = sym->backend_decl; |
2932 | ||
1a186ec5 | 2933 | /* Emit a DECL_EXPR for this variable, which will cause the |
4ab2db93 | 2934 | gimplifier to allocate storage, and all that good stuff. */ |
bc98ed60 | 2935 | tmp = fold_build1_loc (input_location, DECL_EXPR, TREE_TYPE (decl), decl); |
0019d498 | 2936 | gfc_add_expr_to_block (&init, tmp); |
1a186ec5 | 2937 | |
0019d498 | 2938 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
6de9cd9a DN |
2939 | } |
2940 | ||
910450c1 FW |
2941 | /* Set the initial value of ASSIGN statement auxiliary variable explicitly. */ |
2942 | ||
0019d498 DK |
2943 | static void |
2944 | gfc_trans_assign_aux_var (gfc_symbol * sym, gfc_wrapped_block * block) | |
910450c1 | 2945 | { |
0019d498 | 2946 | stmtblock_t init; |
910450c1 FW |
2947 | |
2948 | gcc_assert (sym->backend_decl); | |
0019d498 | 2949 | gfc_start_block (&init); |
910450c1 FW |
2950 | |
2951 | /* Set the initial value to length. See the comments in | |
2952 | function gfc_add_assign_aux_vars in this file. */ | |
0019d498 DK |
2953 | gfc_add_modify (&init, GFC_DECL_STRING_LEN (sym->backend_decl), |
2954 | build_int_cst (NULL_TREE, -2)); | |
910450c1 | 2955 | |
0019d498 | 2956 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
910450c1 FW |
2957 | } |
2958 | ||
417ab240 JJ |
2959 | static void |
2960 | gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body) | |
2961 | { | |
2962 | tree t = *tp, var, val; | |
2963 | ||
2964 | if (t == NULL || t == error_mark_node) | |
2965 | return; | |
2966 | if (TREE_CONSTANT (t) || DECL_P (t)) | |
2967 | return; | |
2968 | ||
2969 | if (TREE_CODE (t) == SAVE_EXPR) | |
2970 | { | |
2971 | if (SAVE_EXPR_RESOLVED_P (t)) | |
2972 | { | |
2973 | *tp = TREE_OPERAND (t, 0); | |
2974 | return; | |
2975 | } | |
2976 | val = TREE_OPERAND (t, 0); | |
2977 | } | |
2978 | else | |
2979 | val = t; | |
2980 | ||
2981 | var = gfc_create_var_np (TREE_TYPE (t), NULL); | |
2982 | gfc_add_decl_to_function (var); | |
726a989a | 2983 | gfc_add_modify (body, var, val); |
417ab240 JJ |
2984 | if (TREE_CODE (t) == SAVE_EXPR) |
2985 | TREE_OPERAND (t, 0) = var; | |
2986 | *tp = var; | |
2987 | } | |
2988 | ||
2989 | static void | |
2990 | gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body) | |
2991 | { | |
2992 | tree t; | |
2993 | ||
2994 | if (type == NULL || type == error_mark_node) | |
2995 | return; | |
2996 | ||
2997 | type = TYPE_MAIN_VARIANT (type); | |
2998 | ||
2999 | if (TREE_CODE (type) == INTEGER_TYPE) | |
3000 | { | |
3001 | gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body); | |
3002 | gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body); | |
3003 | ||
3004 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3005 | { | |
3006 | TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type); | |
3007 | TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type); | |
3008 | } | |
3009 | } | |
3010 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
3011 | { | |
3012 | gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body); | |
3013 | gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body); | |
3014 | gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body); | |
3015 | gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body); | |
3016 | ||
3017 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
3018 | { | |
3019 | TYPE_SIZE (t) = TYPE_SIZE (type); | |
3020 | TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type); | |
3021 | } | |
3022 | } | |
3023 | } | |
3024 | ||
3025 | /* Make sure all type sizes and array domains are either constant, | |
3026 | or variable or parameter decls. This is a simplified variant | |
3027 | of gimplify_type_sizes, but we can't use it here, as none of the | |
3028 | variables in the expressions have been gimplified yet. | |
3029 | As type sizes and domains for various variable length arrays | |
3030 | contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars | |
3031 | time, without this routine gimplify_type_sizes in the middle-end | |
3032 | could result in the type sizes being gimplified earlier than where | |
3033 | those variables are initialized. */ | |
3034 | ||
3035 | void | |
3036 | gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body) | |
3037 | { | |
3038 | tree type = TREE_TYPE (sym->backend_decl); | |
3039 | ||
3040 | if (TREE_CODE (type) == FUNCTION_TYPE | |
3041 | && (sym->attr.function || sym->attr.result || sym->attr.entry)) | |
3042 | { | |
3043 | if (! current_fake_result_decl) | |
3044 | return; | |
3045 | ||
3046 | type = TREE_TYPE (TREE_VALUE (current_fake_result_decl)); | |
3047 | } | |
3048 | ||
3049 | while (POINTER_TYPE_P (type)) | |
3050 | type = TREE_TYPE (type); | |
3051 | ||
3052 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
3053 | { | |
3054 | tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type); | |
3055 | ||
3056 | while (POINTER_TYPE_P (etype)) | |
3057 | etype = TREE_TYPE (etype); | |
3058 | ||
3059 | gfc_trans_vla_type_sizes_1 (etype, body); | |
3060 | } | |
3061 | ||
3062 | gfc_trans_vla_type_sizes_1 (type, body); | |
3063 | } | |
3064 | ||
6de9cd9a | 3065 | |
b7b184a8 | 3066 | /* Initialize a derived type by building an lvalue from the symbol |
2b56d6a4 TB |
3067 | and using trans_assignment to do the work. Set dealloc to false |
3068 | if no deallocation prior the assignment is needed. */ | |
0019d498 DK |
3069 | void |
3070 | gfc_init_default_dt (gfc_symbol * sym, stmtblock_t * block, bool dealloc) | |
d3837072 | 3071 | { |
b7b184a8 | 3072 | gfc_expr *e; |
d3837072 PT |
3073 | tree tmp; |
3074 | tree present; | |
3075 | ||
0019d498 DK |
3076 | gcc_assert (block); |
3077 | ||
b7b184a8 PT |
3078 | gcc_assert (!sym->attr.allocatable); |
3079 | gfc_set_sym_referenced (sym); | |
3080 | e = gfc_lval_expr_from_sym (sym); | |
2b56d6a4 | 3081 | tmp = gfc_trans_assignment (e, sym->value, false, dealloc); |
ba6f7079 TB |
3082 | if (sym->attr.dummy && (sym->attr.optional |
3083 | || sym->ns->proc_name->attr.entry_master)) | |
d3837072 | 3084 | { |
b7b184a8 | 3085 | present = gfc_conv_expr_present (sym); |
5d44e5c8 TB |
3086 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), present, |
3087 | tmp, build_empty_stmt (input_location)); | |
d3837072 | 3088 | } |
0019d498 | 3089 | gfc_add_expr_to_block (block, tmp); |
b7b184a8 | 3090 | gfc_free_expr (e); |
d3837072 PT |
3091 | } |
3092 | ||
3093 | ||
2c69d527 PT |
3094 | /* Initialize INTENT(OUT) derived type dummies. As well as giving |
3095 | them their default initializer, if they do not have allocatable | |
3096 | components, they have their allocatable components deallocated. */ | |
3097 | ||
0019d498 DK |
3098 | static void |
3099 | init_intent_out_dt (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
b7b184a8 | 3100 | { |
0019d498 | 3101 | stmtblock_t init; |
b7b184a8 | 3102 | gfc_formal_arglist *f; |
2c69d527 | 3103 | tree tmp; |
8a272531 | 3104 | tree present; |
b7b184a8 | 3105 | |
0019d498 | 3106 | gfc_init_block (&init); |
b7b184a8 PT |
3107 | for (f = proc_sym->formal; f; f = f->next) |
3108 | if (f->sym && f->sym->attr.intent == INTENT_OUT | |
758e12af TB |
3109 | && !f->sym->attr.pointer |
3110 | && f->sym->ts.type == BT_DERIVED) | |
2c69d527 | 3111 | { |
ba6f7079 | 3112 | if (f->sym->ts.u.derived->attr.alloc_comp && !f->sym->value) |
2c69d527 | 3113 | { |
bc21d315 | 3114 | tmp = gfc_deallocate_alloc_comp (f->sym->ts.u.derived, |
2c69d527 PT |
3115 | f->sym->backend_decl, |
3116 | f->sym->as ? f->sym->as->rank : 0); | |
8a272531 | 3117 | |
ba6f7079 TB |
3118 | if (f->sym->attr.optional |
3119 | || f->sym->ns->proc_name->attr.entry_master) | |
3120 | { | |
3121 | present = gfc_conv_expr_present (f->sym); | |
5d44e5c8 TB |
3122 | tmp = build3_loc (input_location, COND_EXPR, TREE_TYPE (tmp), |
3123 | present, tmp, | |
3124 | build_empty_stmt (input_location)); | |
ba6f7079 | 3125 | } |
8a272531 | 3126 | |
0019d498 | 3127 | gfc_add_expr_to_block (&init, tmp); |
2c69d527 | 3128 | } |
ba6f7079 | 3129 | else if (f->sym->value) |
0019d498 | 3130 | gfc_init_default_dt (f->sym, &init, true); |
2c69d527 | 3131 | } |
b7b184a8 | 3132 | |
0019d498 | 3133 | gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); |
b7b184a8 PT |
3134 | } |
3135 | ||
d3837072 | 3136 | |
571d54de DK |
3137 | /* Do proper initialization for ASSOCIATE names. */ |
3138 | ||
3139 | static void | |
3140 | trans_associate_var (gfc_symbol* sym, gfc_wrapped_block* block) | |
3141 | { | |
3142 | gfc_expr* e; | |
3143 | tree tmp; | |
3144 | ||
3145 | gcc_assert (sym->assoc); | |
3146 | e = sym->assoc->target; | |
3147 | ||
3148 | /* Do a `pointer assignment' with updated descriptor (or assign descriptor | |
3149 | to array temporary) for arrays with either unknown shape or if associating | |
3150 | to a variable. */ | |
3151 | if (sym->attr.dimension | |
3152 | && (sym->as->type == AS_DEFERRED || sym->assoc->variable)) | |
3153 | { | |
3154 | gfc_se se; | |
3155 | gfc_ss* ss; | |
3156 | tree desc; | |
3157 | ||
3158 | desc = sym->backend_decl; | |
3159 | ||
3160 | /* If association is to an expression, evaluate it and create temporary. | |
3161 | Otherwise, get descriptor of target for pointer assignment. */ | |
3162 | gfc_init_se (&se, NULL); | |
3163 | ss = gfc_walk_expr (e); | |
3164 | if (sym->assoc->variable) | |
3165 | { | |
3166 | se.direct_byref = 1; | |
3167 | se.expr = desc; | |
3168 | } | |
3169 | gfc_conv_expr_descriptor (&se, e, ss); | |
3170 | ||
3171 | /* If we didn't already do the pointer assignment, set associate-name | |
3172 | descriptor to the one generated for the temporary. */ | |
3173 | if (!sym->assoc->variable) | |
3174 | { | |
571d54de DK |
3175 | int dim; |
3176 | ||
3177 | gfc_add_modify (&se.pre, desc, se.expr); | |
3178 | ||
3179 | /* The generated descriptor has lower bound zero (as array | |
99d821c0 | 3180 | temporary), shift bounds so we get lower bounds of 1. */ |
571d54de | 3181 | for (dim = 0; dim < e->rank; ++dim) |
99d821c0 DK |
3182 | gfc_conv_shift_descriptor_lbound (&se.pre, desc, |
3183 | dim, gfc_index_one_node); | |
571d54de DK |
3184 | } |
3185 | ||
3186 | /* Done, register stuff as init / cleanup code. */ | |
3187 | gfc_add_init_cleanup (block, gfc_finish_block (&se.pre), | |
3188 | gfc_finish_block (&se.post)); | |
3189 | } | |
3190 | ||
3191 | /* Do a scalar pointer assignment; this is for scalar variable targets. */ | |
3192 | else if (gfc_is_associate_pointer (sym)) | |
3193 | { | |
3194 | gfc_se se; | |
3195 | ||
3196 | gcc_assert (!sym->attr.dimension); | |
3197 | ||
3198 | gfc_init_se (&se, NULL); | |
3199 | gfc_conv_expr (&se, e); | |
3200 | ||
3201 | tmp = TREE_TYPE (sym->backend_decl); | |
3202 | tmp = gfc_build_addr_expr (tmp, se.expr); | |
3203 | gfc_add_modify (&se.pre, sym->backend_decl, tmp); | |
3204 | ||
3205 | gfc_add_init_cleanup (block, gfc_finish_block( &se.pre), | |
3206 | gfc_finish_block (&se.post)); | |
3207 | } | |
3208 | ||
3209 | /* Do a simple assignment. This is for scalar expressions, where we | |
3210 | can simply use expression assignment. */ | |
3211 | else | |
3212 | { | |
3213 | gfc_expr* lhs; | |
3214 | ||
3215 | lhs = gfc_lval_expr_from_sym (sym); | |
3216 | tmp = gfc_trans_assignment (lhs, e, false, true); | |
3217 | gfc_add_init_cleanup (block, tmp, NULL_TREE); | |
3218 | } | |
3219 | } | |
3220 | ||
3221 | ||
6de9cd9a DN |
3222 | /* Generate function entry and exit code, and add it to the function body. |
3223 | This includes: | |
f8d0aee5 | 3224 | Allocation and initialization of array variables. |
6de9cd9a | 3225 | Allocation of character string variables. |
910450c1 | 3226 | Initialization and possibly repacking of dummy arrays. |
1517fd57 | 3227 | Initialization of ASSIGN statement auxiliary variable. |
571d54de | 3228 | Initialization of ASSOCIATE names. |
1517fd57 | 3229 | Automatic deallocation. */ |
6de9cd9a | 3230 | |
d74d8807 DK |
3231 | void |
3232 | gfc_trans_deferred_vars (gfc_symbol * proc_sym, gfc_wrapped_block * block) | |
6de9cd9a DN |
3233 | { |
3234 | locus loc; | |
3235 | gfc_symbol *sym; | |
417ab240 | 3236 | gfc_formal_arglist *f; |
0019d498 | 3237 | stmtblock_t tmpblock; |
7114edca | 3238 | bool seen_trans_deferred_array = false; |
6de9cd9a DN |
3239 | |
3240 | /* Deal with implicit return variables. Explicit return variables will | |
3241 | already have been added. */ | |
3242 | if (gfc_return_by_reference (proc_sym) && proc_sym->result == proc_sym) | |
3243 | { | |
3244 | if (!current_fake_result_decl) | |
3245 | { | |
d198b59a JJ |
3246 | gfc_entry_list *el = NULL; |
3247 | if (proc_sym->attr.entry_master) | |
3248 | { | |
3249 | for (el = proc_sym->ns->entries; el; el = el->next) | |
3250 | if (el->sym != el->sym->result) | |
3251 | break; | |
3252 | } | |
766d0c8c DF |
3253 | /* TODO: move to the appropriate place in resolve.c. */ |
3254 | if (warn_return_type && el == NULL) | |
3255 | gfc_warning ("Return value of function '%s' at %L not set", | |
3256 | proc_sym->name, &proc_sym->declared_at); | |
6de9cd9a | 3257 | } |
d198b59a | 3258 | else if (proc_sym->as) |
6de9cd9a | 3259 | { |
417ab240 | 3260 | tree result = TREE_VALUE (current_fake_result_decl); |
d74d8807 | 3261 | gfc_trans_dummy_array_bias (proc_sym, result, block); |
f5f701ad PT |
3262 | |
3263 | /* An automatic character length, pointer array result. */ | |
3264 | if (proc_sym->ts.type == BT_CHARACTER | |
bc21d315 | 3265 | && TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) |
d74d8807 | 3266 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
6de9cd9a DN |
3267 | } |
3268 | else if (proc_sym->ts.type == BT_CHARACTER) | |
3269 | { | |
bc21d315 | 3270 | if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL) |
d74d8807 | 3271 | gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl, block); |
6de9cd9a DN |
3272 | } |
3273 | else | |
973ff4c0 TS |
3274 | gcc_assert (gfc_option.flag_f2c |
3275 | && proc_sym->ts.type == BT_COMPLEX); | |
6de9cd9a DN |
3276 | } |
3277 | ||
d3837072 PT |
3278 | /* Initialize the INTENT(OUT) derived type dummy arguments. This |
3279 | should be done here so that the offsets and lbounds of arrays | |
3280 | are available. */ | |
d74d8807 | 3281 | init_intent_out_dt (proc_sym, block); |
d3837072 | 3282 | |
6de9cd9a DN |
3283 | for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink) |
3284 | { | |
5046aff5 | 3285 | bool sym_has_alloc_comp = (sym->ts.type == BT_DERIVED) |
bc21d315 | 3286 | && sym->ts.u.derived->attr.alloc_comp; |
571d54de DK |
3287 | if (sym->assoc) |
3288 | trans_associate_var (sym, block); | |
3289 | else if (sym->attr.dimension) | |
6de9cd9a DN |
3290 | { |
3291 | switch (sym->as->type) | |
3292 | { | |
3293 | case AS_EXPLICIT: | |
3294 | if (sym->attr.dummy || sym->attr.result) | |
d74d8807 | 3295 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
6de9cd9a DN |
3296 | else if (sym->attr.pointer || sym->attr.allocatable) |
3297 | { | |
3298 | if (TREE_STATIC (sym->backend_decl)) | |
3299 | gfc_trans_static_array_pointer (sym); | |
3300 | else | |
7114edca PT |
3301 | { |
3302 | seen_trans_deferred_array = true; | |
d74d8807 | 3303 | gfc_trans_deferred_array (sym, block); |
7114edca | 3304 | } |
6de9cd9a DN |
3305 | } |
3306 | else | |
3307 | { | |
7114edca PT |
3308 | if (sym_has_alloc_comp) |
3309 | { | |
3310 | seen_trans_deferred_array = true; | |
d74d8807 | 3311 | gfc_trans_deferred_array (sym, block); |
7114edca | 3312 | } |
b7b184a8 PT |
3313 | else if (sym->ts.type == BT_DERIVED |
3314 | && sym->value | |
3315 | && !sym->attr.data | |
3316 | && sym->attr.save == SAVE_NONE) | |
0019d498 DK |
3317 | { |
3318 | gfc_start_block (&tmpblock); | |
3319 | gfc_init_default_dt (sym, &tmpblock, false); | |
d74d8807 | 3320 | gfc_add_init_cleanup (block, |
0019d498 DK |
3321 | gfc_finish_block (&tmpblock), |
3322 | NULL_TREE); | |
3323 | } | |
7114edca | 3324 | |
6de9cd9a DN |
3325 | gfc_get_backend_locus (&loc); |
3326 | gfc_set_backend_locus (&sym->declared_at); | |
0019d498 | 3327 | gfc_trans_auto_array_allocation (sym->backend_decl, |
d74d8807 | 3328 | sym, block); |
6de9cd9a DN |
3329 | gfc_set_backend_locus (&loc); |
3330 | } | |
3331 | break; | |
3332 | ||
3333 | case AS_ASSUMED_SIZE: | |
3334 | /* Must be a dummy parameter. */ | |
b3aefde2 | 3335 | gcc_assert (sym->attr.dummy || sym->as->cp_was_assumed); |
6de9cd9a DN |
3336 | |
3337 | /* We should always pass assumed size arrays the g77 way. */ | |
b3aefde2 | 3338 | if (sym->attr.dummy) |
d74d8807 | 3339 | gfc_trans_g77_array (sym, block); |
0019d498 | 3340 | break; |
6de9cd9a DN |
3341 | |
3342 | case AS_ASSUMED_SHAPE: | |
3343 | /* Must be a dummy parameter. */ | |
6e45f57b | 3344 | gcc_assert (sym->attr.dummy); |
6de9cd9a | 3345 | |
d74d8807 | 3346 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, block); |
6de9cd9a DN |
3347 | break; |
3348 | ||
3349 | case AS_DEFERRED: | |
7114edca | 3350 | seen_trans_deferred_array = true; |
d74d8807 | 3351 | gfc_trans_deferred_array (sym, block); |
6de9cd9a DN |
3352 | break; |
3353 | ||
3354 | default: | |
6e45f57b | 3355 | gcc_unreachable (); |
6de9cd9a | 3356 | } |
7114edca | 3357 | if (sym_has_alloc_comp && !seen_trans_deferred_array) |
d74d8807 | 3358 | gfc_trans_deferred_array (sym, block); |
6de9cd9a | 3359 | } |
1517fd57 JW |
3360 | else if (sym->attr.allocatable |
3361 | || (sym->ts.type == BT_CLASS | |
7a08eda1 | 3362 | && CLASS_DATA (sym)->attr.allocatable)) |
1517fd57 | 3363 | { |
64b33a7e TB |
3364 | if (!sym->attr.save) |
3365 | { | |
3366 | /* Nullify and automatic deallocation of allocatable | |
3367 | scalars. */ | |
3368 | tree tmp; | |
3369 | gfc_expr *e; | |
3370 | gfc_se se; | |
0019d498 | 3371 | stmtblock_t init; |
64b33a7e TB |
3372 | |
3373 | e = gfc_lval_expr_from_sym (sym); | |
3374 | if (sym->ts.type == BT_CLASS) | |
3375 | gfc_add_component_ref (e, "$data"); | |
3376 | ||
3377 | gfc_init_se (&se, NULL); | |
3378 | se.want_pointer = 1; | |
3379 | gfc_conv_expr (&se, e); | |
3380 | gfc_free_expr (e); | |
3381 | ||
3382 | /* Nullify when entering the scope. */ | |
0019d498 DK |
3383 | gfc_start_block (&init); |
3384 | gfc_add_modify (&init, se.expr, | |
64b33a7e TB |
3385 | fold_convert (TREE_TYPE (se.expr), |
3386 | null_pointer_node)); | |
64b33a7e TB |
3387 | |
3388 | /* Deallocate when leaving the scope. Nullifying is not | |
3389 | needed. */ | |
974df0f8 PT |
3390 | tmp = NULL; |
3391 | if (!sym->attr.result) | |
3392 | tmp = gfc_deallocate_with_status (se.expr, NULL_TREE, | |
3393 | true, NULL); | |
d74d8807 | 3394 | gfc_add_init_cleanup (block, gfc_finish_block (&init), tmp); |
64b33a7e | 3395 | } |
1517fd57 | 3396 | } |
3a28464c | 3397 | else if (sym_has_alloc_comp) |
d74d8807 | 3398 | gfc_trans_deferred_array (sym, block); |
6de9cd9a DN |
3399 | else if (sym->ts.type == BT_CHARACTER) |
3400 | { | |
3401 | gfc_get_backend_locus (&loc); | |
3402 | gfc_set_backend_locus (&sym->declared_at); | |
3403 | if (sym->attr.dummy || sym->attr.result) | |
d74d8807 | 3404 | gfc_trans_dummy_character (sym, sym->ts.u.cl, block); |
6de9cd9a | 3405 | else |
d74d8807 | 3406 | gfc_trans_auto_character_variable (sym, block); |
6de9cd9a DN |
3407 | gfc_set_backend_locus (&loc); |
3408 | } | |
910450c1 FW |
3409 | else if (sym->attr.assign) |
3410 | { | |
3411 | gfc_get_backend_locus (&loc); | |
3412 | gfc_set_backend_locus (&sym->declared_at); | |
d74d8807 | 3413 | gfc_trans_assign_aux_var (sym, block); |
910450c1 FW |
3414 | gfc_set_backend_locus (&loc); |
3415 | } | |
b7b184a8 PT |
3416 | else if (sym->ts.type == BT_DERIVED |
3417 | && sym->value | |
3418 | && !sym->attr.data | |
3419 | && sym->attr.save == SAVE_NONE) | |
0019d498 DK |
3420 | { |
3421 | gfc_start_block (&tmpblock); | |
3422 | gfc_init_default_dt (sym, &tmpblock, false); | |
d74d8807 | 3423 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), |
0019d498 DK |
3424 | NULL_TREE); |
3425 | } | |
6de9cd9a | 3426 | else |
6e45f57b | 3427 | gcc_unreachable (); |
6de9cd9a DN |
3428 | } |
3429 | ||
0019d498 | 3430 | gfc_init_block (&tmpblock); |
417ab240 JJ |
3431 | |
3432 | for (f = proc_sym->formal; f; f = f->next) | |
08113c73 PT |
3433 | { |
3434 | if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER) | |
3435 | { | |
bc21d315 JW |
3436 | gcc_assert (f->sym->ts.u.cl->backend_decl != NULL); |
3437 | if (TREE_CODE (f->sym->ts.u.cl->backend_decl) == PARM_DECL) | |
0019d498 | 3438 | gfc_trans_vla_type_sizes (f->sym, &tmpblock); |
08113c73 | 3439 | } |
08113c73 | 3440 | } |
417ab240 JJ |
3441 | |
3442 | if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER | |
3443 | && current_fake_result_decl != NULL) | |
3444 | { | |
bc21d315 JW |
3445 | gcc_assert (proc_sym->ts.u.cl->backend_decl != NULL); |
3446 | if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == PARM_DECL) | |
0019d498 | 3447 | gfc_trans_vla_type_sizes (proc_sym, &tmpblock); |
417ab240 JJ |
3448 | } |
3449 | ||
d74d8807 | 3450 | gfc_add_init_cleanup (block, gfc_finish_block (&tmpblock), NULL_TREE); |
6de9cd9a DN |
3451 | } |
3452 | ||
a64f5186 JJ |
3453 | static GTY ((param_is (struct module_htab_entry))) htab_t module_htab; |
3454 | ||
3455 | /* Hash and equality functions for module_htab. */ | |
3456 | ||
3457 | static hashval_t | |
3458 | module_htab_do_hash (const void *x) | |
3459 | { | |
3460 | return htab_hash_string (((const struct module_htab_entry *)x)->name); | |
3461 | } | |
3462 | ||
3463 | static int | |
3464 | module_htab_eq (const void *x1, const void *x2) | |
3465 | { | |
3466 | return strcmp ((((const struct module_htab_entry *)x1)->name), | |
3467 | (const char *)x2) == 0; | |
3468 | } | |
3469 | ||
3470 | /* Hash and equality functions for module_htab's decls. */ | |
3471 | ||
3472 | static hashval_t | |
3473 | module_htab_decls_hash (const void *x) | |
3474 | { | |
3475 | const_tree t = (const_tree) x; | |
3476 | const_tree n = DECL_NAME (t); | |
3477 | if (n == NULL_TREE) | |
3478 | n = TYPE_NAME (TREE_TYPE (t)); | |
afdda4b4 | 3479 | return htab_hash_string (IDENTIFIER_POINTER (n)); |
a64f5186 JJ |
3480 | } |
3481 | ||
3482 | static int | |
3483 | module_htab_decls_eq (const void *x1, const void *x2) | |
3484 | { | |
3485 | const_tree t1 = (const_tree) x1; | |
3486 | const_tree n1 = DECL_NAME (t1); | |
3487 | if (n1 == NULL_TREE) | |
3488 | n1 = TYPE_NAME (TREE_TYPE (t1)); | |
3489 | return strcmp (IDENTIFIER_POINTER (n1), (const char *) x2) == 0; | |
3490 | } | |
3491 | ||
3492 | struct module_htab_entry * | |
3493 | gfc_find_module (const char *name) | |
3494 | { | |
3495 | void **slot; | |
3496 | ||
3497 | if (! module_htab) | |
3498 | module_htab = htab_create_ggc (10, module_htab_do_hash, | |
3499 | module_htab_eq, NULL); | |
3500 | ||
3501 | slot = htab_find_slot_with_hash (module_htab, name, | |
3502 | htab_hash_string (name), INSERT); | |
3503 | if (*slot == NULL) | |
3504 | { | |
a9429e29 | 3505 | struct module_htab_entry *entry = ggc_alloc_cleared_module_htab_entry (); |
a64f5186 JJ |
3506 | |
3507 | entry->name = gfc_get_string (name); | |
3508 | entry->decls = htab_create_ggc (10, module_htab_decls_hash, | |
3509 | module_htab_decls_eq, NULL); | |
3510 | *slot = (void *) entry; | |
3511 | } | |
3512 | return (struct module_htab_entry *) *slot; | |
3513 | } | |
3514 | ||
3515 | void | |
3516 | gfc_module_add_decl (struct module_htab_entry *entry, tree decl) | |
3517 | { | |
3518 | void **slot; | |
3519 | const char *name; | |
3520 | ||
3521 | if (DECL_NAME (decl)) | |
3522 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
3523 | else | |
3524 | { | |
3525 | gcc_assert (TREE_CODE (decl) == TYPE_DECL); | |
3526 | name = IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))); | |
3527 | } | |
3528 | slot = htab_find_slot_with_hash (entry->decls, name, | |
3529 | htab_hash_string (name), INSERT); | |
3530 | if (*slot == NULL) | |
3531 | *slot = (void *) decl; | |
3532 | } | |
3533 | ||
3534 | static struct module_htab_entry *cur_module; | |
6de9cd9a DN |
3535 | |
3536 | /* Output an initialized decl for a module variable. */ | |
3537 | ||
3538 | static void | |
3539 | gfc_create_module_variable (gfc_symbol * sym) | |
3540 | { | |
3541 | tree decl; | |
6de9cd9a | 3542 | |
1a492601 PT |
3543 | /* Module functions with alternate entries are dealt with later and |
3544 | would get caught by the next condition. */ | |
3545 | if (sym->attr.entry) | |
3546 | return; | |
3547 | ||
a8b3b0b6 CR |
3548 | /* Make sure we convert the types of the derived types from iso_c_binding |
3549 | into (void *). */ | |
3550 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
3551 | && sym->ts.type == BT_DERIVED) | |
3552 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
3553 | ||
a64f5186 JJ |
3554 | if (sym->attr.flavor == FL_DERIVED |
3555 | && sym->backend_decl | |
3556 | && TREE_CODE (sym->backend_decl) == RECORD_TYPE) | |
3557 | { | |
3558 | decl = sym->backend_decl; | |
3559 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
b8849663 PT |
3560 | |
3561 | /* -fwhole-file mixes up the contexts so these asserts are unnecessary. */ | |
3562 | if (!(gfc_option.flag_whole_file && sym->attr.use_assoc)) | |
3563 | { | |
3564 | gcc_assert (TYPE_CONTEXT (decl) == NULL_TREE | |
3565 | || TYPE_CONTEXT (decl) == sym->ns->proc_name->backend_decl); | |
3566 | gcc_assert (DECL_CONTEXT (TYPE_STUB_DECL (decl)) == NULL_TREE | |
3567 | || DECL_CONTEXT (TYPE_STUB_DECL (decl)) | |
3568 | == sym->ns->proc_name->backend_decl); | |
3569 | } | |
a64f5186 JJ |
3570 | TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl; |
3571 | DECL_CONTEXT (TYPE_STUB_DECL (decl)) = sym->ns->proc_name->backend_decl; | |
3572 | gfc_module_add_decl (cur_module, TYPE_STUB_DECL (decl)); | |
3573 | } | |
3574 | ||
6e0d2de7 JW |
3575 | /* Only output variables, procedure pointers and array valued, |
3576 | or derived type, parameters. */ | |
6de9cd9a | 3577 | if (sym->attr.flavor != FL_VARIABLE |
fdc55763 | 3578 | && !(sym->attr.flavor == FL_PARAMETER |
6e0d2de7 JW |
3579 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED)) |
3580 | && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.proc_pointer)) | |
6de9cd9a DN |
3581 | return; |
3582 | ||
a64f5186 JJ |
3583 | if ((sym->attr.in_common || sym->attr.in_equivalence) && sym->backend_decl) |
3584 | { | |
3585 | decl = sym->backend_decl; | |
3586 | gcc_assert (DECL_CONTEXT (decl) == NULL_TREE); | |
3587 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
3588 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
3589 | gfc_module_add_decl (cur_module, decl); | |
3590 | } | |
3591 | ||
9cbf8b41 TS |
3592 | /* Don't generate variables from other modules. Variables from |
3593 | COMMONs will already have been generated. */ | |
3594 | if (sym->attr.use_assoc || sym->attr.in_common) | |
6de9cd9a DN |
3595 | return; |
3596 | ||
30aabb86 | 3597 | /* Equivalenced variables arrive here after creation. */ |
b95605fb | 3598 | if (sym->backend_decl |
a64f5186 JJ |
3599 | && (sym->equiv_built || sym->attr.in_equivalence)) |
3600 | return; | |
30aabb86 | 3601 | |
80f95228 | 3602 | if (sym->backend_decl && !sym->attr.vtab && !sym->attr.target) |
6de9cd9a DN |
3603 | internal_error ("backend decl for module variable %s already exists", |
3604 | sym->name); | |
3605 | ||
3606 | /* We always want module variables to be created. */ | |
3607 | sym->attr.referenced = 1; | |
3608 | /* Create the decl. */ | |
3609 | decl = gfc_get_symbol_decl (sym); | |
3610 | ||
6de9cd9a DN |
3611 | /* Create the variable. */ |
3612 | pushdecl (decl); | |
a64f5186 JJ |
3613 | gcc_assert (DECL_CONTEXT (decl) == NULL_TREE); |
3614 | gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE); | |
3615 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
0e6df31e | 3616 | rest_of_decl_compilation (decl, 1, 0); |
a64f5186 | 3617 | gfc_module_add_decl (cur_module, decl); |
6de9cd9a DN |
3618 | |
3619 | /* Also add length of strings. */ | |
3620 | if (sym->ts.type == BT_CHARACTER) | |
3621 | { | |
3622 | tree length; | |
3623 | ||
bc21d315 | 3624 | length = sym->ts.u.cl->backend_decl; |
9c4174d8 PT |
3625 | gcc_assert (length || sym->attr.proc_pointer); |
3626 | if (length && !INTEGER_CST_P (length)) | |
6de9cd9a DN |
3627 | { |
3628 | pushdecl (length); | |
0e6df31e | 3629 | rest_of_decl_compilation (length, 1, 0); |
6de9cd9a DN |
3630 | } |
3631 | } | |
3632 | } | |
3633 | ||
9268ba9a | 3634 | /* Emit debug information for USE statements. */ |
a64f5186 JJ |
3635 | |
3636 | static void | |
3637 | gfc_trans_use_stmts (gfc_namespace * ns) | |
3638 | { | |
3639 | gfc_use_list *use_stmt; | |
3640 | for (use_stmt = ns->use_stmts; use_stmt; use_stmt = use_stmt->next) | |
3641 | { | |
3642 | struct module_htab_entry *entry | |
3643 | = gfc_find_module (use_stmt->module_name); | |
3644 | gfc_use_rename *rent; | |
3645 | ||
3646 | if (entry->namespace_decl == NULL) | |
3647 | { | |
3648 | entry->namespace_decl | |
c2255bc4 AH |
3649 | = build_decl (input_location, |
3650 | NAMESPACE_DECL, | |
a64f5186 JJ |
3651 | get_identifier (use_stmt->module_name), |
3652 | void_type_node); | |
3653 | DECL_EXTERNAL (entry->namespace_decl) = 1; | |
3654 | } | |
9268ba9a | 3655 | gfc_set_backend_locus (&use_stmt->where); |
a64f5186 JJ |
3656 | if (!use_stmt->only_flag) |
3657 | (*debug_hooks->imported_module_or_decl) (entry->namespace_decl, | |
3658 | NULL_TREE, | |
3659 | ns->proc_name->backend_decl, | |
3660 | false); | |
3661 | for (rent = use_stmt->rename; rent; rent = rent->next) | |
3662 | { | |
3663 | tree decl, local_name; | |
3664 | void **slot; | |
3665 | ||
3666 | if (rent->op != INTRINSIC_NONE) | |
3667 | continue; | |
3668 | ||
3669 | slot = htab_find_slot_with_hash (entry->decls, rent->use_name, | |
3670 | htab_hash_string (rent->use_name), | |
3671 | INSERT); | |
3672 | if (*slot == NULL) | |
3673 | { | |
3674 | gfc_symtree *st; | |
3675 | ||
3676 | st = gfc_find_symtree (ns->sym_root, | |
3677 | rent->local_name[0] | |
3678 | ? rent->local_name : rent->use_name); | |
1151ccc9 PT |
3679 | gcc_assert (st); |
3680 | ||
3681 | /* Sometimes, generic interfaces wind up being over-ruled by a | |
3682 | local symbol (see PR41062). */ | |
3683 | if (!st->n.sym->attr.use_assoc) | |
3684 | continue; | |
3685 | ||
9268ba9a JJ |
3686 | if (st->n.sym->backend_decl |
3687 | && DECL_P (st->n.sym->backend_decl) | |
3688 | && st->n.sym->module | |
3689 | && strcmp (st->n.sym->module, use_stmt->module_name) == 0) | |
a64f5186 | 3690 | { |
9268ba9a JJ |
3691 | gcc_assert (DECL_EXTERNAL (entry->namespace_decl) |
3692 | || (TREE_CODE (st->n.sym->backend_decl) | |
3693 | != VAR_DECL)); | |
a64f5186 JJ |
3694 | decl = copy_node (st->n.sym->backend_decl); |
3695 | DECL_CONTEXT (decl) = entry->namespace_decl; | |
3696 | DECL_EXTERNAL (decl) = 1; | |
3697 | DECL_IGNORED_P (decl) = 0; | |
3698 | DECL_INITIAL (decl) = NULL_TREE; | |
3699 | } | |
3700 | else | |
3701 | { | |
3702 | *slot = error_mark_node; | |
3703 | htab_clear_slot (entry->decls, slot); | |
3704 | continue; | |
3705 | } | |
3706 | *slot = decl; | |
3707 | } | |
3708 | decl = (tree) *slot; | |
3709 | if (rent->local_name[0]) | |
3710 | local_name = get_identifier (rent->local_name); | |
3711 | else | |
3712 | local_name = NULL_TREE; | |
9268ba9a | 3713 | gfc_set_backend_locus (&rent->where); |
a64f5186 JJ |
3714 | (*debug_hooks->imported_module_or_decl) (decl, local_name, |
3715 | ns->proc_name->backend_decl, | |
3716 | !use_stmt->only_flag); | |
3717 | } | |
3718 | } | |
6de9cd9a DN |
3719 | } |
3720 | ||
9268ba9a | 3721 | |
bd11e37d JJ |
3722 | /* Return true if expr is a constant initializer that gfc_conv_initializer |
3723 | will handle. */ | |
3724 | ||
3725 | static bool | |
3726 | check_constant_initializer (gfc_expr *expr, gfc_typespec *ts, bool array, | |
3727 | bool pointer) | |
3728 | { | |
3729 | gfc_constructor *c; | |
3730 | gfc_component *cm; | |
3731 | ||
3732 | if (pointer) | |
3733 | return true; | |
3734 | else if (array) | |
3735 | { | |
3736 | if (expr->expr_type == EXPR_CONSTANT || expr->expr_type == EXPR_NULL) | |
3737 | return true; | |
3738 | else if (expr->expr_type == EXPR_STRUCTURE) | |
3739 | return check_constant_initializer (expr, ts, false, false); | |
3740 | else if (expr->expr_type != EXPR_ARRAY) | |
3741 | return false; | |
b7e75771 JD |
3742 | for (c = gfc_constructor_first (expr->value.constructor); |
3743 | c; c = gfc_constructor_next (c)) | |
bd11e37d JJ |
3744 | { |
3745 | if (c->iterator) | |
3746 | return false; | |
3747 | if (c->expr->expr_type == EXPR_STRUCTURE) | |
3748 | { | |
3749 | if (!check_constant_initializer (c->expr, ts, false, false)) | |
3750 | return false; | |
3751 | } | |
3752 | else if (c->expr->expr_type != EXPR_CONSTANT) | |
3753 | return false; | |
3754 | } | |
3755 | return true; | |
3756 | } | |
3757 | else switch (ts->type) | |
3758 | { | |
3759 | case BT_DERIVED: | |
3760 | if (expr->expr_type != EXPR_STRUCTURE) | |
3761 | return false; | |
bc21d315 | 3762 | cm = expr->ts.u.derived->components; |
b7e75771 JD |
3763 | for (c = gfc_constructor_first (expr->value.constructor); |
3764 | c; c = gfc_constructor_next (c), cm = cm->next) | |
bd11e37d JJ |
3765 | { |
3766 | if (!c->expr || cm->attr.allocatable) | |
3767 | continue; | |
3768 | if (!check_constant_initializer (c->expr, &cm->ts, | |
3769 | cm->attr.dimension, | |
3770 | cm->attr.pointer)) | |
3771 | return false; | |
3772 | } | |
3773 | return true; | |
3774 | default: | |
3775 | return expr->expr_type == EXPR_CONSTANT; | |
3776 | } | |
3777 | } | |
3778 | ||
3779 | /* Emit debug info for parameters and unreferenced variables with | |
3780 | initializers. */ | |
3781 | ||
3782 | static void | |
3783 | gfc_emit_parameter_debug_info (gfc_symbol *sym) | |
3784 | { | |
3785 | tree decl; | |
3786 | ||
3787 | if (sym->attr.flavor != FL_PARAMETER | |
3788 | && (sym->attr.flavor != FL_VARIABLE || sym->attr.referenced)) | |
3789 | return; | |
3790 | ||
3791 | if (sym->backend_decl != NULL | |
3792 | || sym->value == NULL | |
3793 | || sym->attr.use_assoc | |
3794 | || sym->attr.dummy | |
3795 | || sym->attr.result | |
3796 | || sym->attr.function | |
3797 | || sym->attr.intrinsic | |
3798 | || sym->attr.pointer | |
3799 | || sym->attr.allocatable | |
3800 | || sym->attr.cray_pointee | |
3801 | || sym->attr.threadprivate | |
3802 | || sym->attr.is_bind_c | |
3803 | || sym->attr.subref_array_pointer | |
3804 | || sym->attr.assign) | |
3805 | return; | |
3806 | ||
3807 | if (sym->ts.type == BT_CHARACTER) | |
3808 | { | |
bc21d315 JW |
3809 | gfc_conv_const_charlen (sym->ts.u.cl); |
3810 | if (sym->ts.u.cl->backend_decl == NULL | |
3811 | || TREE_CODE (sym->ts.u.cl->backend_decl) != INTEGER_CST) | |
bd11e37d JJ |
3812 | return; |
3813 | } | |
bc21d315 | 3814 | else if (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp) |
bd11e37d JJ |
3815 | return; |
3816 | ||
3817 | if (sym->as) | |
3818 | { | |
3819 | int n; | |
3820 | ||
3821 | if (sym->as->type != AS_EXPLICIT) | |
3822 | return; | |
3823 | for (n = 0; n < sym->as->rank; n++) | |
3824 | if (sym->as->lower[n]->expr_type != EXPR_CONSTANT | |
3825 | || sym->as->upper[n] == NULL | |
3826 | || sym->as->upper[n]->expr_type != EXPR_CONSTANT) | |
3827 | return; | |
3828 | } | |
3829 | ||
3830 | if (!check_constant_initializer (sym->value, &sym->ts, | |
3831 | sym->attr.dimension, false)) | |
3832 | return; | |
3833 | ||
3834 | /* Create the decl for the variable or constant. */ | |
c2255bc4 AH |
3835 | decl = build_decl (input_location, |
3836 | sym->attr.flavor == FL_PARAMETER ? CONST_DECL : VAR_DECL, | |
bd11e37d JJ |
3837 | gfc_sym_identifier (sym), gfc_sym_type (sym)); |
3838 | if (sym->attr.flavor == FL_PARAMETER) | |
3839 | TREE_READONLY (decl) = 1; | |
3840 | gfc_set_decl_location (decl, &sym->declared_at); | |
3841 | if (sym->attr.dimension) | |
3842 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
3843 | DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl; | |
3844 | TREE_STATIC (decl) = 1; | |
3845 | TREE_USED (decl) = 1; | |
3846 | if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL) | |
3847 | TREE_PUBLIC (decl) = 1; | |
1d0134b3 JW |
3848 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, |
3849 | TREE_TYPE (decl), | |
3850 | sym->attr.dimension, | |
3851 | false, false); | |
bd11e37d JJ |
3852 | debug_hooks->global_decl (decl); |
3853 | } | |
3854 | ||
9268ba9a JJ |
3855 | /* Generate all the required code for module variables. */ |
3856 | ||
3857 | void | |
3858 | gfc_generate_module_vars (gfc_namespace * ns) | |
3859 | { | |
3860 | module_namespace = ns; | |
3861 | cur_module = gfc_find_module (ns->proc_name->name); | |
3862 | ||
3863 | /* Check if the frontend left the namespace in a reasonable state. */ | |
3864 | gcc_assert (ns->proc_name && !ns->proc_name->tlink); | |
3865 | ||
3866 | /* Generate COMMON blocks. */ | |
3867 | gfc_trans_common (ns); | |
3868 | ||
3869 | /* Create decls for all the module variables. */ | |
3870 | gfc_traverse_ns (ns, gfc_create_module_variable); | |
3871 | ||
3872 | cur_module = NULL; | |
3873 | ||
3874 | gfc_trans_use_stmts (ns); | |
bd11e37d | 3875 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
9268ba9a JJ |
3876 | } |
3877 | ||
3878 | ||
6de9cd9a DN |
3879 | static void |
3880 | gfc_generate_contained_functions (gfc_namespace * parent) | |
3881 | { | |
3882 | gfc_namespace *ns; | |
3883 | ||
3884 | /* We create all the prototypes before generating any code. */ | |
3885 | for (ns = parent->contained; ns; ns = ns->sibling) | |
3886 | { | |
3887 | /* Skip namespaces from used modules. */ | |
3888 | if (ns->parent != parent) | |
3889 | continue; | |
3890 | ||
fb55ca75 | 3891 | gfc_create_function_decl (ns, false); |
6de9cd9a DN |
3892 | } |
3893 | ||
3894 | for (ns = parent->contained; ns; ns = ns->sibling) | |
3895 | { | |
3896 | /* Skip namespaces from used modules. */ | |
3897 | if (ns->parent != parent) | |
3898 | continue; | |
3899 | ||
3900 | gfc_generate_function_code (ns); | |
3901 | } | |
3902 | } | |
3903 | ||
3904 | ||
3e978d30 PT |
3905 | /* Drill down through expressions for the array specification bounds and |
3906 | character length calling generate_local_decl for all those variables | |
3907 | that have not already been declared. */ | |
3908 | ||
3909 | static void | |
3910 | generate_local_decl (gfc_symbol *); | |
3911 | ||
908a2235 | 3912 | /* Traverse expr, marking all EXPR_VARIABLE symbols referenced. */ |
3e978d30 | 3913 | |
908a2235 PT |
3914 | static bool |
3915 | expr_decls (gfc_expr *e, gfc_symbol *sym, | |
3916 | int *f ATTRIBUTE_UNUSED) | |
3917 | { | |
3918 | if (e->expr_type != EXPR_VARIABLE | |
3919 | || sym == e->symtree->n.sym | |
3e978d30 PT |
3920 | || e->symtree->n.sym->mark |
3921 | || e->symtree->n.sym->ns != sym->ns) | |
908a2235 | 3922 | return false; |
3e978d30 | 3923 | |
908a2235 PT |
3924 | generate_local_decl (e->symtree->n.sym); |
3925 | return false; | |
3926 | } | |
3e978d30 | 3927 | |
908a2235 PT |
3928 | static void |
3929 | generate_expr_decls (gfc_symbol *sym, gfc_expr *e) | |
3930 | { | |
3931 | gfc_traverse_expr (e, sym, expr_decls, 0); | |
3e978d30 PT |
3932 | } |
3933 | ||
3934 | ||
66e4ab31 | 3935 | /* Check for dependencies in the character length and array spec. */ |
3e978d30 PT |
3936 | |
3937 | static void | |
3938 | generate_dependency_declarations (gfc_symbol *sym) | |
3939 | { | |
3940 | int i; | |
3941 | ||
3942 | if (sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
3943 | && sym->ts.u.cl |
3944 | && sym->ts.u.cl->length | |
3945 | && sym->ts.u.cl->length->expr_type != EXPR_CONSTANT) | |
3946 | generate_expr_decls (sym, sym->ts.u.cl->length); | |
3e978d30 PT |
3947 | |
3948 | if (sym->as && sym->as->rank) | |
3949 | { | |
3950 | for (i = 0; i < sym->as->rank; i++) | |
3951 | { | |
3952 | generate_expr_decls (sym, sym->as->lower[i]); | |
3953 | generate_expr_decls (sym, sym->as->upper[i]); | |
3954 | } | |
3955 | } | |
3956 | } | |
3957 | ||
3958 | ||
6de9cd9a DN |
3959 | /* Generate decls for all local variables. We do this to ensure correct |
3960 | handling of expressions which only appear in the specification of | |
3961 | other functions. */ | |
3962 | ||
3963 | static void | |
3964 | generate_local_decl (gfc_symbol * sym) | |
3965 | { | |
3966 | if (sym->attr.flavor == FL_VARIABLE) | |
3967 | { | |
3e978d30 | 3968 | if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master) |
2c69d527 | 3969 | generate_dependency_declarations (sym); |
3e978d30 | 3970 | |
6de9cd9a | 3971 | if (sym->attr.referenced) |
2c69d527 | 3972 | gfc_get_symbol_decl (sym); |
4ed44ccc DF |
3973 | |
3974 | /* Warnings for unused dummy arguments. */ | |
3975 | else if (sym->attr.dummy) | |
ad6d42e1 | 3976 | { |
4ed44ccc DF |
3977 | /* INTENT(out) dummy arguments are likely meant to be set. */ |
3978 | if (gfc_option.warn_unused_dummy_argument | |
3979 | && sym->attr.intent == INTENT_OUT) | |
3980 | { | |
3981 | if (sym->ts.type != BT_DERIVED) | |
3982 | gfc_warning ("Dummy argument '%s' at %L was declared " | |
3983 | "INTENT(OUT) but was not set", sym->name, | |
3984 | &sym->declared_at); | |
3985 | else if (!gfc_has_default_initializer (sym->ts.u.derived)) | |
3986 | gfc_warning ("Derived-type dummy argument '%s' at %L was " | |
3987 | "declared INTENT(OUT) but was not set and " | |
3988 | "does not have a default initializer", | |
3989 | sym->name, &sym->declared_at); | |
3990 | } | |
3991 | else if (gfc_option.warn_unused_dummy_argument) | |
3992 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, | |
3993 | &sym->declared_at); | |
ad6d42e1 | 3994 | } |
4ed44ccc | 3995 | |
f8d0aee5 | 3996 | /* Warn for unused variables, but not if they're inside a common |
19e4c59d | 3997 | block or are use-associated. */ |
ce738b86 | 3998 | else if (warn_unused_variable |
766d0c8c | 3999 | && !(sym->attr.in_common || sym->attr.use_assoc || sym->mark)) |
d92693b4 | 4000 | gfc_warning ("Unused variable '%s' declared at %L", sym->name, |
80f2bb6e | 4001 | &sym->declared_at); |
2c69d527 | 4002 | |
417ab240 JJ |
4003 | /* For variable length CHARACTER parameters, the PARM_DECL already |
4004 | references the length variable, so force gfc_get_symbol_decl | |
4005 | even when not referenced. If optimize > 0, it will be optimized | |
4006 | away anyway. But do this only after emitting -Wunused-parameter | |
4007 | warning if requested. */ | |
2c69d527 PT |
4008 | if (sym->attr.dummy && !sym->attr.referenced |
4009 | && sym->ts.type == BT_CHARACTER | |
bc21d315 JW |
4010 | && sym->ts.u.cl->backend_decl != NULL |
4011 | && TREE_CODE (sym->ts.u.cl->backend_decl) == VAR_DECL) | |
417ab240 JJ |
4012 | { |
4013 | sym->attr.referenced = 1; | |
4014 | gfc_get_symbol_decl (sym); | |
4015 | } | |
534fd534 | 4016 | |
5af2eace PT |
4017 | /* INTENT(out) dummy arguments and result variables with allocatable |
4018 | components are reset by default and need to be set referenced to | |
4019 | generate the code for nullification and automatic lengths. */ | |
4020 | if (!sym->attr.referenced | |
2c69d527 | 4021 | && sym->ts.type == BT_DERIVED |
bc21d315 | 4022 | && sym->ts.u.derived->attr.alloc_comp |
758e12af | 4023 | && !sym->attr.pointer |
5af2eace PT |
4024 | && ((sym->attr.dummy && sym->attr.intent == INTENT_OUT) |
4025 | || | |
4026 | (sym->attr.result && sym != sym->result))) | |
2c69d527 PT |
4027 | { |
4028 | sym->attr.referenced = 1; | |
4029 | gfc_get_symbol_decl (sym); | |
4030 | } | |
4031 | ||
06c7153f TB |
4032 | /* Check for dependencies in the array specification and string |
4033 | length, adding the necessary declarations to the function. We | |
4034 | mark the symbol now, as well as in traverse_ns, to prevent | |
4035 | getting stuck in a circular dependency. */ | |
4036 | sym->mark = 1; | |
4037 | ||
534fd534 DF |
4038 | /* We do not want the middle-end to warn about unused parameters |
4039 | as this was already done above. */ | |
4040 | if (sym->attr.dummy && sym->backend_decl != NULL_TREE) | |
4041 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
6de9cd9a | 4042 | } |
33c0c5e9 DF |
4043 | else if (sym->attr.flavor == FL_PARAMETER) |
4044 | { | |
d92693b4 | 4045 | if (warn_unused_parameter |
33c0c5e9 DF |
4046 | && !sym->attr.referenced |
4047 | && !sym->attr.use_assoc) | |
d92693b4 | 4048 | gfc_warning ("Unused parameter '%s' declared at %L", sym->name, |
33c0c5e9 DF |
4049 | &sym->declared_at); |
4050 | } | |
766d0c8c DF |
4051 | else if (sym->attr.flavor == FL_PROCEDURE) |
4052 | { | |
4053 | /* TODO: move to the appropriate place in resolve.c. */ | |
4054 | if (warn_return_type | |
4055 | && sym->attr.function | |
4056 | && sym->result | |
4057 | && sym != sym->result | |
4058 | && !sym->result->attr.referenced | |
4059 | && !sym->attr.use_assoc | |
4060 | && sym->attr.if_source != IFSRC_IFBODY) | |
4061 | { | |
4062 | gfc_warning ("Return value '%s' of function '%s' declared at " | |
4063 | "%L not set", sym->result->name, sym->name, | |
4064 | &sym->result->declared_at); | |
4065 | ||
4066 | /* Prevents "Unused variable" warning for RESULT variables. */ | |
06c7153f | 4067 | sym->result->mark = 1; |
766d0c8c DF |
4068 | } |
4069 | } | |
a8b3b0b6 | 4070 | |
8b16d231 CR |
4071 | if (sym->attr.dummy == 1) |
4072 | { | |
4073 | /* Modify the tree type for scalar character dummy arguments of bind(c) | |
4074 | procedures if they are passed by value. The tree type for them will | |
4075 | be promoted to INTEGER_TYPE for the middle end, which appears to be | |
4076 | what C would do with characters passed by-value. The value attribute | |
4077 | implies the dummy is a scalar. */ | |
4078 | if (sym->attr.value == 1 && sym->backend_decl != NULL | |
4079 | && sym->ts.type == BT_CHARACTER && sym->ts.is_c_interop | |
4080 | && sym->ns->proc_name != NULL && sym->ns->proc_name->attr.is_bind_c) | |
e032c2a1 | 4081 | gfc_conv_scalar_char_value (sym, NULL, NULL); |
8b16d231 CR |
4082 | } |
4083 | ||
a8b3b0b6 CR |
4084 | /* Make sure we convert the types of the derived types from iso_c_binding |
4085 | into (void *). */ | |
4086 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
4087 | && sym->ts.type == BT_DERIVED) | |
4088 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
6de9cd9a DN |
4089 | } |
4090 | ||
4091 | static void | |
4092 | generate_local_vars (gfc_namespace * ns) | |
4093 | { | |
4094 | gfc_traverse_ns (ns, generate_local_decl); | |
4095 | } | |
4096 | ||
4097 | ||
3d79abbd PB |
4098 | /* Generate a switch statement to jump to the correct entry point. Also |
4099 | creates the label decls for the entry points. */ | |
6de9cd9a | 4100 | |
3d79abbd PB |
4101 | static tree |
4102 | gfc_trans_entry_master_switch (gfc_entry_list * el) | |
6de9cd9a | 4103 | { |
3d79abbd PB |
4104 | stmtblock_t block; |
4105 | tree label; | |
4106 | tree tmp; | |
4107 | tree val; | |
6de9cd9a | 4108 | |
3d79abbd PB |
4109 | gfc_init_block (&block); |
4110 | for (; el; el = el->next) | |
4111 | { | |
4112 | /* Add the case label. */ | |
c006df4e | 4113 | label = gfc_build_label_decl (NULL_TREE); |
7d60be94 | 4114 | val = build_int_cst (gfc_array_index_type, el->id); |
923ab88c | 4115 | tmp = build3_v (CASE_LABEL_EXPR, val, NULL_TREE, label); |
3d79abbd | 4116 | gfc_add_expr_to_block (&block, tmp); |
7389bce6 | 4117 | |
3d79abbd PB |
4118 | /* And jump to the actual entry point. */ |
4119 | label = gfc_build_label_decl (NULL_TREE); | |
3d79abbd PB |
4120 | tmp = build1_v (GOTO_EXPR, label); |
4121 | gfc_add_expr_to_block (&block, tmp); | |
4122 | ||
4123 | /* Save the label decl. */ | |
4124 | el->label = label; | |
4125 | } | |
4126 | tmp = gfc_finish_block (&block); | |
4127 | /* The first argument selects the entry point. */ | |
4128 | val = DECL_ARGUMENTS (current_function_decl); | |
923ab88c | 4129 | tmp = build3_v (SWITCH_EXPR, val, tmp, NULL_TREE); |
3d79abbd | 4130 | return tmp; |
6de9cd9a DN |
4131 | } |
4132 | ||
44de5aeb | 4133 | |
cadb8f42 DK |
4134 | /* Add code to string lengths of actual arguments passed to a function against |
4135 | the expected lengths of the dummy arguments. */ | |
4136 | ||
4137 | static void | |
4138 | add_argument_checking (stmtblock_t *block, gfc_symbol *sym) | |
4139 | { | |
4140 | gfc_formal_arglist *formal; | |
4141 | ||
4142 | for (formal = sym->formal; formal; formal = formal->next) | |
4143 | if (formal->sym && formal->sym->ts.type == BT_CHARACTER) | |
4144 | { | |
4145 | enum tree_code comparison; | |
4146 | tree cond; | |
4147 | tree argname; | |
4148 | gfc_symbol *fsym; | |
4149 | gfc_charlen *cl; | |
4150 | const char *message; | |
4151 | ||
4152 | fsym = formal->sym; | |
bc21d315 | 4153 | cl = fsym->ts.u.cl; |
cadb8f42 DK |
4154 | |
4155 | gcc_assert (cl); | |
4156 | gcc_assert (cl->passed_length != NULL_TREE); | |
4157 | gcc_assert (cl->backend_decl != NULL_TREE); | |
4158 | ||
4159 | /* For POINTER, ALLOCATABLE and assumed-shape dummy arguments, the | |
4160 | string lengths must match exactly. Otherwise, it is only required | |
cb7a8961 TB |
4161 | that the actual string length is *at least* the expected one. |
4162 | Sequence association allows for a mismatch of the string length | |
4163 | if the actual argument is (part of) an array, but only if the | |
4164 | dummy argument is an array. (See "Sequence association" in | |
4165 | Section 12.4.1.4 for F95 and 12.4.1.5 for F2003.) */ | |
cadb8f42 DK |
4166 | if (fsym->attr.pointer || fsym->attr.allocatable |
4167 | || (fsym->as && fsym->as->type == AS_ASSUMED_SHAPE)) | |
4168 | { | |
4169 | comparison = NE_EXPR; | |
4170 | message = _("Actual string length does not match the declared one" | |
4171 | " for dummy argument '%s' (%ld/%ld)"); | |
4172 | } | |
cb7a8961 TB |
4173 | else if (fsym->as && fsym->as->rank != 0) |
4174 | continue; | |
cadb8f42 DK |
4175 | else |
4176 | { | |
4177 | comparison = LT_EXPR; | |
4178 | message = _("Actual string length is shorter than the declared one" | |
4179 | " for dummy argument '%s' (%ld/%ld)"); | |
4180 | } | |
4181 | ||
4182 | /* Build the condition. For optional arguments, an actual length | |
4183 | of 0 is also acceptable if the associated string is NULL, which | |
4184 | means the argument was not passed. */ | |
bc98ed60 TB |
4185 | cond = fold_build2_loc (input_location, comparison, boolean_type_node, |
4186 | cl->passed_length, cl->backend_decl); | |
cadb8f42 DK |
4187 | if (fsym->attr.optional) |
4188 | { | |
4189 | tree not_absent; | |
4190 | tree not_0length; | |
4191 | tree absent_failed; | |
4192 | ||
bc98ed60 TB |
4193 | not_0length = fold_build2_loc (input_location, NE_EXPR, |
4194 | boolean_type_node, | |
4195 | cl->passed_length, | |
4196 | fold_convert (gfc_charlen_type_node, | |
4197 | integer_zero_node)); | |
702a738b PT |
4198 | /* The symbol needs to be referenced for gfc_get_symbol_decl. */ |
4199 | fsym->attr.referenced = 1; | |
4200 | not_absent = gfc_conv_expr_present (fsym); | |
cadb8f42 | 4201 | |
bc98ed60 TB |
4202 | absent_failed = fold_build2_loc (input_location, TRUTH_OR_EXPR, |
4203 | boolean_type_node, not_0length, | |
4204 | not_absent); | |
cadb8f42 | 4205 | |
bc98ed60 TB |
4206 | cond = fold_build2_loc (input_location, TRUTH_AND_EXPR, |
4207 | boolean_type_node, cond, absent_failed); | |
cadb8f42 DK |
4208 | } |
4209 | ||
4210 | /* Build the runtime check. */ | |
4211 | argname = gfc_build_cstring_const (fsym->name); | |
4212 | argname = gfc_build_addr_expr (pchar_type_node, argname); | |
4213 | gfc_trans_runtime_check (true, false, cond, block, &fsym->declared_at, | |
4214 | message, argname, | |
4215 | fold_convert (long_integer_type_node, | |
4216 | cl->passed_length), | |
4217 | fold_convert (long_integer_type_node, | |
4218 | cl->backend_decl)); | |
4219 | } | |
4220 | } | |
4221 | ||
4222 | ||
092231a8 TB |
4223 | static void |
4224 | create_main_function (tree fndecl) | |
4225 | { | |
86c3c481 | 4226 | tree old_context; |
092231a8 TB |
4227 | tree ftn_main; |
4228 | tree tmp, decl, result_decl, argc, argv, typelist, arglist; | |
4229 | stmtblock_t body; | |
4230 | ||
86c3c481 TB |
4231 | old_context = current_function_decl; |
4232 | ||
4233 | if (old_context) | |
4234 | { | |
4235 | push_function_context (); | |
4236 | saved_parent_function_decls = saved_function_decls; | |
4237 | saved_function_decls = NULL_TREE; | |
4238 | } | |
4239 | ||
092231a8 TB |
4240 | /* main() function must be declared with global scope. */ |
4241 | gcc_assert (current_function_decl == NULL_TREE); | |
4242 | ||
4243 | /* Declare the function. */ | |
4244 | tmp = build_function_type_list (integer_type_node, integer_type_node, | |
4245 | build_pointer_type (pchar_type_node), | |
4246 | NULL_TREE); | |
a7ad6c2d | 4247 | main_identifier_node = get_identifier ("main"); |
c2255bc4 AH |
4248 | ftn_main = build_decl (input_location, FUNCTION_DECL, |
4249 | main_identifier_node, tmp); | |
092231a8 TB |
4250 | DECL_EXTERNAL (ftn_main) = 0; |
4251 | TREE_PUBLIC (ftn_main) = 1; | |
4252 | TREE_STATIC (ftn_main) = 1; | |
4253 | DECL_ATTRIBUTES (ftn_main) | |
4254 | = tree_cons (get_identifier("externally_visible"), NULL_TREE, NULL_TREE); | |
4255 | ||
4256 | /* Setup the result declaration (for "return 0"). */ | |
c2255bc4 AH |
4257 | result_decl = build_decl (input_location, |
4258 | RESULT_DECL, NULL_TREE, integer_type_node); | |
092231a8 TB |
4259 | DECL_ARTIFICIAL (result_decl) = 1; |
4260 | DECL_IGNORED_P (result_decl) = 1; | |
4261 | DECL_CONTEXT (result_decl) = ftn_main; | |
4262 | DECL_RESULT (ftn_main) = result_decl; | |
4263 | ||
4264 | pushdecl (ftn_main); | |
4265 | ||
4266 | /* Get the arguments. */ | |
4267 | ||
4268 | arglist = NULL_TREE; | |
4269 | typelist = TYPE_ARG_TYPES (TREE_TYPE (ftn_main)); | |
4270 | ||
4271 | tmp = TREE_VALUE (typelist); | |
c2255bc4 | 4272 | argc = build_decl (input_location, PARM_DECL, get_identifier ("argc"), tmp); |
092231a8 TB |
4273 | DECL_CONTEXT (argc) = ftn_main; |
4274 | DECL_ARG_TYPE (argc) = TREE_VALUE (typelist); | |
4275 | TREE_READONLY (argc) = 1; | |
4276 | gfc_finish_decl (argc); | |
4277 | arglist = chainon (arglist, argc); | |
4278 | ||
4279 | typelist = TREE_CHAIN (typelist); | |
4280 | tmp = TREE_VALUE (typelist); | |
c2255bc4 | 4281 | argv = build_decl (input_location, PARM_DECL, get_identifier ("argv"), tmp); |
092231a8 TB |
4282 | DECL_CONTEXT (argv) = ftn_main; |
4283 | DECL_ARG_TYPE (argv) = TREE_VALUE (typelist); | |
4284 | TREE_READONLY (argv) = 1; | |
4285 | DECL_BY_REFERENCE (argv) = 1; | |
4286 | gfc_finish_decl (argv); | |
4287 | arglist = chainon (arglist, argv); | |
4288 | ||
4289 | DECL_ARGUMENTS (ftn_main) = arglist; | |
4290 | current_function_decl = ftn_main; | |
4291 | announce_function (ftn_main); | |
4292 | ||
4293 | rest_of_decl_compilation (ftn_main, 1, 0); | |
4294 | make_decl_rtl (ftn_main); | |
4295 | init_function_start (ftn_main); | |
4296 | pushlevel (0); | |
4297 | ||
4298 | gfc_init_block (&body); | |
4299 | ||
4300 | /* Call some libgfortran initialization routines, call then MAIN__(). */ | |
4301 | ||
4302 | /* Call _gfortran_set_args (argc, argv). */ | |
86c3c481 TB |
4303 | TREE_USED (argc) = 1; |
4304 | TREE_USED (argv) = 1; | |
db3927fb AH |
4305 | tmp = build_call_expr_loc (input_location, |
4306 | gfor_fndecl_set_args, 2, argc, argv); | |
092231a8 TB |
4307 | gfc_add_expr_to_block (&body, tmp); |
4308 | ||
4309 | /* Add a call to set_options to set up the runtime library Fortran | |
4310 | language standard parameters. */ | |
4311 | { | |
4312 | tree array_type, array, var; | |
8748ad99 | 4313 | VEC(constructor_elt,gc) *v = NULL; |
092231a8 TB |
4314 | |
4315 | /* Passing a new option to the library requires four modifications: | |
4316 | + add it to the tree_cons list below | |
4317 | + change the array size in the call to build_array_type | |
4318 | + change the first argument to the library call | |
4319 | gfor_fndecl_set_options | |
4320 | + modify the library (runtime/compile_options.c)! */ | |
4321 | ||
8748ad99 NF |
4322 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
4323 | build_int_cst (integer_type_node, | |
4324 | gfc_option.warn_std)); | |
4325 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4326 | build_int_cst (integer_type_node, | |
4327 | gfc_option.allow_std)); | |
4328 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4329 | build_int_cst (integer_type_node, pedantic)); | |
4330 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4331 | build_int_cst (integer_type_node, | |
4332 | gfc_option.flag_dump_core)); | |
4333 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4334 | build_int_cst (integer_type_node, | |
4335 | gfc_option.flag_backtrace)); | |
4336 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4337 | build_int_cst (integer_type_node, | |
4338 | gfc_option.flag_sign_zero)); | |
4339 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4340 | build_int_cst (integer_type_node, | |
4341 | (gfc_option.rtcheck | |
4342 | & GFC_RTCHECK_BOUNDS))); | |
4343 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, | |
4344 | build_int_cst (integer_type_node, | |
4345 | gfc_option.flag_range_check)); | |
092231a8 TB |
4346 | |
4347 | array_type = build_array_type (integer_type_node, | |
4348 | build_index_type (build_int_cst (NULL_TREE, 7))); | |
8748ad99 | 4349 | array = build_constructor (array_type, v); |
092231a8 TB |
4350 | TREE_CONSTANT (array) = 1; |
4351 | TREE_STATIC (array) = 1; | |
4352 | ||
4353 | /* Create a static variable to hold the jump table. */ | |
4354 | var = gfc_create_var (array_type, "options"); | |
4355 | TREE_CONSTANT (var) = 1; | |
4356 | TREE_STATIC (var) = 1; | |
4357 | TREE_READONLY (var) = 1; | |
4358 | DECL_INITIAL (var) = array; | |
4359 | var = gfc_build_addr_expr (build_pointer_type (integer_type_node), var); | |
4360 | ||
db3927fb AH |
4361 | tmp = build_call_expr_loc (input_location, |
4362 | gfor_fndecl_set_options, 2, | |
092231a8 TB |
4363 | build_int_cst (integer_type_node, 8), var); |
4364 | gfc_add_expr_to_block (&body, tmp); | |
4365 | } | |
4366 | ||
4367 | /* If -ffpe-trap option was provided, add a call to set_fpe so that | |
4368 | the library will raise a FPE when needed. */ | |
4369 | if (gfc_option.fpe != 0) | |
4370 | { | |
db3927fb AH |
4371 | tmp = build_call_expr_loc (input_location, |
4372 | gfor_fndecl_set_fpe, 1, | |
092231a8 TB |
4373 | build_int_cst (integer_type_node, |
4374 | gfc_option.fpe)); | |
4375 | gfc_add_expr_to_block (&body, tmp); | |
4376 | } | |
4377 | ||
4378 | /* If this is the main program and an -fconvert option was provided, | |
4379 | add a call to set_convert. */ | |
4380 | ||
4381 | if (gfc_option.convert != GFC_CONVERT_NATIVE) | |
4382 | { | |
db3927fb AH |
4383 | tmp = build_call_expr_loc (input_location, |
4384 | gfor_fndecl_set_convert, 1, | |
092231a8 TB |
4385 | build_int_cst (integer_type_node, |
4386 | gfc_option.convert)); | |
4387 | gfc_add_expr_to_block (&body, tmp); | |
4388 | } | |
4389 | ||
4390 | /* If this is the main program and an -frecord-marker option was provided, | |
4391 | add a call to set_record_marker. */ | |
4392 | ||
4393 | if (gfc_option.record_marker != 0) | |
4394 | { | |
db3927fb AH |
4395 | tmp = build_call_expr_loc (input_location, |
4396 | gfor_fndecl_set_record_marker, 1, | |
092231a8 TB |
4397 | build_int_cst (integer_type_node, |
4398 | gfc_option.record_marker)); | |
4399 | gfc_add_expr_to_block (&body, tmp); | |
4400 | } | |
4401 | ||
4402 | if (gfc_option.max_subrecord_length != 0) | |
4403 | { | |
db3927fb AH |
4404 | tmp = build_call_expr_loc (input_location, |
4405 | gfor_fndecl_set_max_subrecord_length, 1, | |
092231a8 TB |
4406 | build_int_cst (integer_type_node, |
4407 | gfc_option.max_subrecord_length)); | |
4408 | gfc_add_expr_to_block (&body, tmp); | |
4409 | } | |
4410 | ||
4411 | /* Call MAIN__(). */ | |
db3927fb AH |
4412 | tmp = build_call_expr_loc (input_location, |
4413 | fndecl, 0); | |
092231a8 TB |
4414 | gfc_add_expr_to_block (&body, tmp); |
4415 | ||
86c3c481 TB |
4416 | /* Mark MAIN__ as used. */ |
4417 | TREE_USED (fndecl) = 1; | |
4418 | ||
092231a8 | 4419 | /* "return 0". */ |
bc98ed60 TB |
4420 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, integer_type_node, |
4421 | DECL_RESULT (ftn_main), | |
4422 | build_int_cst (integer_type_node, 0)); | |
092231a8 TB |
4423 | tmp = build1_v (RETURN_EXPR, tmp); |
4424 | gfc_add_expr_to_block (&body, tmp); | |
4425 | ||
4426 | ||
4427 | DECL_SAVED_TREE (ftn_main) = gfc_finish_block (&body); | |
4428 | decl = getdecls (); | |
4429 | ||
4430 | /* Finish off this function and send it for code generation. */ | |
4431 | poplevel (1, 0, 1); | |
4432 | BLOCK_SUPERCONTEXT (DECL_INITIAL (ftn_main)) = ftn_main; | |
4433 | ||
4434 | DECL_SAVED_TREE (ftn_main) | |
4435 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (ftn_main), | |
4436 | DECL_INITIAL (ftn_main)); | |
4437 | ||
4438 | /* Output the GENERIC tree. */ | |
4439 | dump_function (TDI_original, ftn_main); | |
4440 | ||
9618fb3c | 4441 | cgraph_finalize_function (ftn_main, true); |
86c3c481 TB |
4442 | |
4443 | if (old_context) | |
4444 | { | |
4445 | pop_function_context (); | |
4446 | saved_function_decls = saved_parent_function_decls; | |
4447 | } | |
4448 | current_function_decl = old_context; | |
092231a8 TB |
4449 | } |
4450 | ||
4451 | ||
d74d8807 DK |
4452 | /* Get the result expression for a procedure. */ |
4453 | ||
4454 | static tree | |
4455 | get_proc_result (gfc_symbol* sym) | |
4456 | { | |
4457 | if (sym->attr.subroutine || sym == sym->result) | |
4458 | { | |
4459 | if (current_fake_result_decl != NULL) | |
4460 | return TREE_VALUE (current_fake_result_decl); | |
4461 | ||
4462 | return NULL_TREE; | |
4463 | } | |
4464 | ||
4465 | return sym->result->backend_decl; | |
4466 | } | |
4467 | ||
4468 | ||
4469 | /* Generate an appropriate return-statement for a procedure. */ | |
4470 | ||
4471 | tree | |
4472 | gfc_generate_return (void) | |
4473 | { | |
4474 | gfc_symbol* sym; | |
4475 | tree result; | |
4476 | tree fndecl; | |
4477 | ||
4478 | sym = current_procedure_symbol; | |
4479 | fndecl = sym->backend_decl; | |
4480 | ||
4481 | if (TREE_TYPE (DECL_RESULT (fndecl)) == void_type_node) | |
4482 | result = NULL_TREE; | |
4483 | else | |
4484 | { | |
4485 | result = get_proc_result (sym); | |
4486 | ||
4487 | /* Set the return value to the dummy result variable. The | |
4488 | types may be different for scalar default REAL functions | |
4489 | with -ff2c, therefore we have to convert. */ | |
4490 | if (result != NULL_TREE) | |
4491 | { | |
4492 | result = convert (TREE_TYPE (DECL_RESULT (fndecl)), result); | |
bc98ed60 TB |
4493 | result = fold_build2_loc (input_location, MODIFY_EXPR, |
4494 | TREE_TYPE (result), DECL_RESULT (fndecl), | |
4495 | result); | |
d74d8807 DK |
4496 | } |
4497 | } | |
4498 | ||
4499 | return build1_v (RETURN_EXPR, result); | |
4500 | } | |
4501 | ||
4502 | ||
6de9cd9a DN |
4503 | /* Generate code for a function. */ |
4504 | ||
4505 | void | |
4506 | gfc_generate_function_code (gfc_namespace * ns) | |
4507 | { | |
4508 | tree fndecl; | |
4509 | tree old_context; | |
4510 | tree decl; | |
4511 | tree tmp; | |
d74d8807 | 4512 | stmtblock_t init, cleanup; |
6de9cd9a | 4513 | stmtblock_t body; |
d74d8807 | 4514 | gfc_wrapped_block try_block; |
702a738b | 4515 | tree recurcheckvar = NULL_TREE; |
6de9cd9a | 4516 | gfc_symbol *sym; |
d74d8807 | 4517 | gfc_symbol *previous_procedure_symbol; |
5046aff5 | 4518 | int rank; |
cf7d2eb0 | 4519 | bool is_recursive; |
6de9cd9a DN |
4520 | |
4521 | sym = ns->proc_name; | |
d74d8807 DK |
4522 | previous_procedure_symbol = current_procedure_symbol; |
4523 | current_procedure_symbol = sym; | |
3d79abbd | 4524 | |
6de9cd9a | 4525 | /* Check that the frontend isn't still using this. */ |
6e45f57b | 4526 | gcc_assert (sym->tlink == NULL); |
6de9cd9a DN |
4527 | sym->tlink = sym; |
4528 | ||
4529 | /* Create the declaration for functions with global scope. */ | |
4530 | if (!sym->backend_decl) | |
fb55ca75 | 4531 | gfc_create_function_decl (ns, false); |
6de9cd9a DN |
4532 | |
4533 | fndecl = sym->backend_decl; | |
4534 | old_context = current_function_decl; | |
4535 | ||
4536 | if (old_context) | |
4537 | { | |
4538 | push_function_context (); | |
4539 | saved_parent_function_decls = saved_function_decls; | |
4540 | saved_function_decls = NULL_TREE; | |
4541 | } | |
4542 | ||
3d79abbd | 4543 | trans_function_start (sym); |
6de9cd9a | 4544 | |
d74d8807 | 4545 | gfc_init_block (&init); |
6de9cd9a | 4546 | |
d198b59a JJ |
4547 | if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER) |
4548 | { | |
4549 | /* Copy length backend_decls to all entry point result | |
4550 | symbols. */ | |
4551 | gfc_entry_list *el; | |
4552 | tree backend_decl; | |
4553 | ||
bc21d315 JW |
4554 | gfc_conv_const_charlen (ns->proc_name->ts.u.cl); |
4555 | backend_decl = ns->proc_name->result->ts.u.cl->backend_decl; | |
d198b59a | 4556 | for (el = ns->entries; el; el = el->next) |
bc21d315 | 4557 | el->sym->result->ts.u.cl->backend_decl = backend_decl; |
d198b59a JJ |
4558 | } |
4559 | ||
6de9cd9a DN |
4560 | /* Translate COMMON blocks. */ |
4561 | gfc_trans_common (ns); | |
4562 | ||
5f20c93a PT |
4563 | /* Null the parent fake result declaration if this namespace is |
4564 | a module function or an external procedures. */ | |
4565 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
4566 | || ns->parent == NULL) | |
4567 | parent_fake_result_decl = NULL_TREE; | |
4568 | ||
30aabb86 PT |
4569 | gfc_generate_contained_functions (ns); |
4570 | ||
77f2a970 JJ |
4571 | nonlocal_dummy_decls = NULL; |
4572 | nonlocal_dummy_decl_pset = NULL; | |
4573 | ||
6de9cd9a | 4574 | generate_local_vars (ns); |
7389bce6 | 4575 | |
5f20c93a PT |
4576 | /* Keep the parent fake result declaration in module functions |
4577 | or external procedures. */ | |
4578 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
4579 | || ns->parent == NULL) | |
4580 | current_fake_result_decl = parent_fake_result_decl; | |
4581 | else | |
4582 | current_fake_result_decl = NULL_TREE; | |
4583 | ||
d74d8807 DK |
4584 | is_recursive = sym->attr.recursive |
4585 | || (sym->attr.entry_master | |
4586 | && sym->ns->entries->sym->attr.recursive); | |
4587 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
4588 | && !is_recursive | |
4589 | && !gfc_option.flag_recursive) | |
4590 | { | |
4591 | char * msg; | |
4592 | ||
4593 | asprintf (&msg, "Recursive call to nonrecursive procedure '%s'", | |
4594 | sym->name); | |
4595 | recurcheckvar = gfc_create_var (boolean_type_node, "is_recursive"); | |
4596 | TREE_STATIC (recurcheckvar) = 1; | |
4597 | DECL_INITIAL (recurcheckvar) = boolean_false_node; | |
4598 | gfc_add_expr_to_block (&init, recurcheckvar); | |
4599 | gfc_trans_runtime_check (true, false, recurcheckvar, &init, | |
4600 | &sym->declared_at, msg); | |
4601 | gfc_add_modify (&init, recurcheckvar, boolean_true_node); | |
4602 | gfc_free (msg); | |
4603 | } | |
6de9cd9a DN |
4604 | |
4605 | /* Now generate the code for the body of this function. */ | |
4606 | gfc_init_block (&body); | |
4607 | ||
4608 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node | |
d74d8807 | 4609 | && sym->attr.subroutine) |
6de9cd9a DN |
4610 | { |
4611 | tree alternate_return; | |
5f20c93a | 4612 | alternate_return = gfc_get_fake_result_decl (sym, 0); |
726a989a | 4613 | gfc_add_modify (&body, alternate_return, integer_zero_node); |
6de9cd9a DN |
4614 | } |
4615 | ||
3d79abbd PB |
4616 | if (ns->entries) |
4617 | { | |
4618 | /* Jump to the correct entry point. */ | |
4619 | tmp = gfc_trans_entry_master_switch (ns->entries); | |
4620 | gfc_add_expr_to_block (&body, tmp); | |
4621 | } | |
4622 | ||
cadb8f42 DK |
4623 | /* If bounds-checking is enabled, generate code to check passed in actual |
4624 | arguments against the expected dummy argument attributes (e.g. string | |
4625 | lengths). */ | |
975d3303 | 4626 | if ((gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) && !sym->attr.is_bind_c) |
cadb8f42 DK |
4627 | add_argument_checking (&body, sym); |
4628 | ||
6de9cd9a DN |
4629 | tmp = gfc_trans_code (ns->code); |
4630 | gfc_add_expr_to_block (&body, tmp); | |
4631 | ||
6de9cd9a DN |
4632 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node) |
4633 | { | |
d74d8807 | 4634 | tree result = get_proc_result (sym); |
6de9cd9a | 4635 | |
702a738b PT |
4636 | if (result != NULL_TREE |
4637 | && sym->attr.function | |
4638 | && !sym->attr.pointer) | |
5046aff5 | 4639 | { |
5b130807 TB |
4640 | if (sym->ts.type == BT_DERIVED |
4641 | && sym->ts.u.derived->attr.alloc_comp) | |
4642 | { | |
4643 | rank = sym->as ? sym->as->rank : 0; | |
d74d8807 DK |
4644 | tmp = gfc_nullify_alloc_comp (sym->ts.u.derived, result, rank); |
4645 | gfc_add_expr_to_block (&init, tmp); | |
5b130807 TB |
4646 | } |
4647 | else if (sym->attr.allocatable && sym->attr.dimension == 0) | |
d74d8807 DK |
4648 | gfc_add_modify (&init, result, fold_convert (TREE_TYPE (result), |
4649 | null_pointer_node)); | |
958dd42b | 4650 | } |
cf7d2eb0 | 4651 | |
766d0c8c DF |
4652 | if (result == NULL_TREE) |
4653 | { | |
4654 | /* TODO: move to the appropriate place in resolve.c. */ | |
4655 | if (warn_return_type && !sym->attr.referenced && sym == sym->result) | |
4656 | gfc_warning ("Return value of function '%s' at %L not set", | |
4657 | sym->name, &sym->declared_at); | |
5046aff5 | 4658 | |
766d0c8c DF |
4659 | TREE_NO_WARNING(sym->backend_decl) = 1; |
4660 | } | |
6de9cd9a | 4661 | else |
d74d8807 | 4662 | gfc_add_expr_to_block (&body, gfc_generate_return ()); |
6de9cd9a | 4663 | } |
d74d8807 DK |
4664 | |
4665 | gfc_init_block (&cleanup); | |
4666 | ||
4667 | /* Reset recursion-check variable. */ | |
4668 | if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION) | |
4669 | && !is_recursive | |
4670 | && !gfc_option.flag_openmp | |
4671 | && recurcheckvar != NULL_TREE) | |
cf7d2eb0 | 4672 | { |
d74d8807 DK |
4673 | gfc_add_modify (&cleanup, recurcheckvar, boolean_false_node); |
4674 | recurcheckvar = NULL; | |
cf7d2eb0 | 4675 | } |
5046aff5 | 4676 | |
d74d8807 DK |
4677 | /* Finish the function body and add init and cleanup code. */ |
4678 | tmp = gfc_finish_block (&body); | |
4679 | gfc_start_wrapped_block (&try_block, tmp); | |
4680 | /* Add code to create and cleanup arrays. */ | |
4681 | gfc_trans_deferred_vars (sym, &try_block); | |
4682 | gfc_add_init_cleanup (&try_block, gfc_finish_block (&init), | |
4683 | gfc_finish_block (&cleanup)); | |
6de9cd9a DN |
4684 | |
4685 | /* Add all the decls we created during processing. */ | |
4686 | decl = saved_function_decls; | |
4687 | while (decl) | |
4688 | { | |
4689 | tree next; | |
4690 | ||
910ad8de NF |
4691 | next = DECL_CHAIN (decl); |
4692 | DECL_CHAIN (decl) = NULL_TREE; | |
6de9cd9a DN |
4693 | pushdecl (decl); |
4694 | decl = next; | |
4695 | } | |
4696 | saved_function_decls = NULL_TREE; | |
4697 | ||
d74d8807 | 4698 | DECL_SAVED_TREE (fndecl) = gfc_finish_wrapped_block (&try_block); |
c7c79a09 | 4699 | decl = getdecls (); |
6de9cd9a DN |
4700 | |
4701 | /* Finish off this function and send it for code generation. */ | |
4702 | poplevel (1, 0, 1); | |
4703 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
4704 | ||
c7c79a09 JJ |
4705 | DECL_SAVED_TREE (fndecl) |
4706 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
4707 | DECL_INITIAL (fndecl)); | |
4708 | ||
77f2a970 JJ |
4709 | if (nonlocal_dummy_decls) |
4710 | { | |
4711 | BLOCK_VARS (DECL_INITIAL (fndecl)) | |
4712 | = chainon (BLOCK_VARS (DECL_INITIAL (fndecl)), nonlocal_dummy_decls); | |
4713 | pointer_set_destroy (nonlocal_dummy_decl_pset); | |
4714 | nonlocal_dummy_decls = NULL; | |
4715 | nonlocal_dummy_decl_pset = NULL; | |
4716 | } | |
4717 | ||
6de9cd9a DN |
4718 | /* Output the GENERIC tree. */ |
4719 | dump_function (TDI_original, fndecl); | |
4720 | ||
4721 | /* Store the end of the function, so that we get good line number | |
4722 | info for the epilogue. */ | |
4723 | cfun->function_end_locus = input_location; | |
4724 | ||
4725 | /* We're leaving the context of this function, so zap cfun. | |
4726 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
4727 | tree_rest_of_compilation. */ | |
db2960f4 | 4728 | set_cfun (NULL); |
6de9cd9a DN |
4729 | |
4730 | if (old_context) | |
4731 | { | |
4732 | pop_function_context (); | |
4733 | saved_function_decls = saved_parent_function_decls; | |
4734 | } | |
4735 | current_function_decl = old_context; | |
4736 | ||
4737 | if (decl_function_context (fndecl)) | |
44de5aeb RK |
4738 | /* Register this function with cgraph just far enough to get it |
4739 | added to our parent's nested function list. */ | |
4740 | (void) cgraph_node (fndecl); | |
6de9cd9a | 4741 | else |
9618fb3c | 4742 | cgraph_finalize_function (fndecl, true); |
a64f5186 JJ |
4743 | |
4744 | gfc_trans_use_stmts (ns); | |
bd11e37d | 4745 | gfc_traverse_ns (ns, gfc_emit_parameter_debug_info); |
092231a8 TB |
4746 | |
4747 | if (sym->attr.is_main_program) | |
4748 | create_main_function (fndecl); | |
d74d8807 DK |
4749 | |
4750 | current_procedure_symbol = previous_procedure_symbol; | |
6de9cd9a DN |
4751 | } |
4752 | ||
092231a8 | 4753 | |
6de9cd9a DN |
4754 | void |
4755 | gfc_generate_constructors (void) | |
4756 | { | |
6e45f57b | 4757 | gcc_assert (gfc_static_ctors == NULL_TREE); |
6de9cd9a DN |
4758 | #if 0 |
4759 | tree fnname; | |
4760 | tree type; | |
4761 | tree fndecl; | |
4762 | tree decl; | |
4763 | tree tmp; | |
4764 | ||
4765 | if (gfc_static_ctors == NULL_TREE) | |
4766 | return; | |
4767 | ||
5880f14f | 4768 | fnname = get_file_function_name ("I"); |
b64fca63 | 4769 | type = build_function_type_list (void_type_node, NULL_TREE); |
6de9cd9a | 4770 | |
c2255bc4 AH |
4771 | fndecl = build_decl (input_location, |
4772 | FUNCTION_DECL, fnname, type); | |
6de9cd9a DN |
4773 | TREE_PUBLIC (fndecl) = 1; |
4774 | ||
c2255bc4 AH |
4775 | decl = build_decl (input_location, |
4776 | RESULT_DECL, NULL_TREE, void_type_node); | |
b785f485 RH |
4777 | DECL_ARTIFICIAL (decl) = 1; |
4778 | DECL_IGNORED_P (decl) = 1; | |
6de9cd9a DN |
4779 | DECL_CONTEXT (decl) = fndecl; |
4780 | DECL_RESULT (fndecl) = decl; | |
4781 | ||
4782 | pushdecl (fndecl); | |
4783 | ||
4784 | current_function_decl = fndecl; | |
4785 | ||
0e6df31e | 4786 | rest_of_decl_compilation (fndecl, 1, 0); |
6de9cd9a | 4787 | |
0e6df31e | 4788 | make_decl_rtl (fndecl); |
6de9cd9a | 4789 | |
c8cc8542 | 4790 | init_function_start (fndecl); |
6de9cd9a | 4791 | |
6de9cd9a DN |
4792 | pushlevel (0); |
4793 | ||
4794 | for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors)) | |
4795 | { | |
db3927fb AH |
4796 | tmp = build_call_expr_loc (input_location, |
4797 | TREE_VALUE (gfc_static_ctors), 0); | |
c2255bc4 | 4798 | DECL_SAVED_TREE (fndecl) = build_stmt (input_location, EXPR_STMT, tmp); |
6de9cd9a DN |
4799 | } |
4800 | ||
c7c79a09 | 4801 | decl = getdecls (); |
6de9cd9a DN |
4802 | poplevel (1, 0, 1); |
4803 | ||
4804 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
c7c79a09 JJ |
4805 | DECL_SAVED_TREE (fndecl) |
4806 | = build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl), | |
4807 | DECL_INITIAL (fndecl)); | |
6de9cd9a DN |
4808 | |
4809 | free_after_parsing (cfun); | |
4810 | free_after_compilation (cfun); | |
4811 | ||
0f0377f6 | 4812 | tree_rest_of_compilation (fndecl); |
6de9cd9a DN |
4813 | |
4814 | current_function_decl = NULL_TREE; | |
4815 | #endif | |
4816 | } | |
4817 | ||
0de4325e TS |
4818 | /* Translates a BLOCK DATA program unit. This means emitting the |
4819 | commons contained therein plus their initializations. We also emit | |
4820 | a globally visible symbol to make sure that each BLOCK DATA program | |
4821 | unit remains unique. */ | |
4822 | ||
4823 | void | |
4824 | gfc_generate_block_data (gfc_namespace * ns) | |
4825 | { | |
4826 | tree decl; | |
4827 | tree id; | |
4828 | ||
c8cc8542 PB |
4829 | /* Tell the backend the source location of the block data. */ |
4830 | if (ns->proc_name) | |
4831 | gfc_set_backend_locus (&ns->proc_name->declared_at); | |
4832 | else | |
4833 | gfc_set_backend_locus (&gfc_current_locus); | |
4834 | ||
4835 | /* Process the DATA statements. */ | |
0de4325e TS |
4836 | gfc_trans_common (ns); |
4837 | ||
c8cc8542 PB |
4838 | /* Create a global symbol with the mane of the block data. This is to |
4839 | generate linker errors if the same name is used twice. It is never | |
4840 | really used. */ | |
0de4325e TS |
4841 | if (ns->proc_name) |
4842 | id = gfc_sym_mangled_function_id (ns->proc_name); | |
4843 | else | |
4844 | id = get_identifier ("__BLOCK_DATA__"); | |
4845 | ||
c2255bc4 AH |
4846 | decl = build_decl (input_location, |
4847 | VAR_DECL, id, gfc_array_index_type); | |
0de4325e TS |
4848 | TREE_PUBLIC (decl) = 1; |
4849 | TREE_STATIC (decl) = 1; | |
a64f5186 | 4850 | DECL_IGNORED_P (decl) = 1; |
0de4325e TS |
4851 | |
4852 | pushdecl (decl); | |
4853 | rest_of_decl_compilation (decl, 1, 0); | |
4854 | } | |
4855 | ||
83d890b9 | 4856 | |
9abe5e56 DK |
4857 | /* Process the local variables of a BLOCK construct. */ |
4858 | ||
4859 | void | |
3e78238a | 4860 | gfc_process_block_locals (gfc_namespace* ns, gfc_association_list* assoc) |
9abe5e56 DK |
4861 | { |
4862 | tree decl; | |
4863 | ||
4864 | gcc_assert (saved_local_decls == NULL_TREE); | |
4865 | generate_local_vars (ns); | |
4866 | ||
3e78238a DK |
4867 | /* Mark associate names to be initialized. The symbol's namespace may not |
4868 | be the BLOCK's, we have to force this so that the deferring | |
4869 | works as expected. */ | |
4870 | for (; assoc; assoc = assoc->next) | |
4871 | { | |
4872 | assoc->st->n.sym->ns = ns; | |
4873 | gfc_defer_symbol_init (assoc->st->n.sym); | |
4874 | } | |
4875 | ||
9abe5e56 DK |
4876 | decl = saved_local_decls; |
4877 | while (decl) | |
4878 | { | |
4879 | tree next; | |
4880 | ||
910ad8de NF |
4881 | next = DECL_CHAIN (decl); |
4882 | DECL_CHAIN (decl) = NULL_TREE; | |
9abe5e56 DK |
4883 | pushdecl (decl); |
4884 | decl = next; | |
4885 | } | |
4886 | saved_local_decls = NULL_TREE; | |
4887 | } | |
4888 | ||
4889 | ||
6de9cd9a | 4890 | #include "gt-fortran-trans-decl.h" |