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Commit | Line | Data |
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6de9cd9a | 1 | /* Backend function setup |
44855d8c | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software |
710a179f | 3 | 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" | |
27 | #include "tree.h" | |
28 | #include "tree-dump.h" | |
eadf906f | 29 | #include "tree-gimple.h" |
6de9cd9a DN |
30 | #include "ggc.h" |
31 | #include "toplev.h" | |
32 | #include "tm.h" | |
25f2dfd3 | 33 | #include "rtl.h" |
6de9cd9a DN |
34 | #include "target.h" |
35 | #include "function.h" | |
6de9cd9a DN |
36 | #include "flags.h" |
37 | #include "cgraph.h" | |
6de9cd9a DN |
38 | #include "gfortran.h" |
39 | #include "trans.h" | |
40 | #include "trans-types.h" | |
41 | #include "trans-array.h" | |
42 | #include "trans-const.h" | |
43 | /* Only for gfc_trans_code. Shouldn't need to include this. */ | |
44 | #include "trans-stmt.h" | |
45 | ||
46 | #define MAX_LABEL_VALUE 99999 | |
47 | ||
48 | ||
49 | /* Holds the result of the function if no result variable specified. */ | |
50 | ||
51 | static GTY(()) tree current_fake_result_decl; | |
5f20c93a | 52 | static GTY(()) tree parent_fake_result_decl; |
6de9cd9a DN |
53 | |
54 | static GTY(()) tree current_function_return_label; | |
55 | ||
56 | ||
57 | /* Holds the variable DECLs for the current function. */ | |
58 | ||
417ab240 JJ |
59 | static GTY(()) tree saved_function_decls; |
60 | static GTY(()) tree saved_parent_function_decls; | |
6de9cd9a DN |
61 | |
62 | ||
63 | /* The namespace of the module we're currently generating. Only used while | |
64 | outputting decls for module variables. Do not rely on this being set. */ | |
65 | ||
66 | static gfc_namespace *module_namespace; | |
67 | ||
68 | ||
69 | /* List of static constructor functions. */ | |
70 | ||
71 | tree gfc_static_ctors; | |
72 | ||
73 | ||
74 | /* Function declarations for builtin library functions. */ | |
75 | ||
6de9cd9a DN |
76 | tree gfor_fndecl_pause_numeric; |
77 | tree gfor_fndecl_pause_string; | |
78 | tree gfor_fndecl_stop_numeric; | |
79 | tree gfor_fndecl_stop_string; | |
80 | tree gfor_fndecl_select_string; | |
81 | tree gfor_fndecl_runtime_error; | |
f96d606f | 82 | tree gfor_fndecl_runtime_error_at; |
1529b8d9 | 83 | tree gfor_fndecl_os_error; |
f96d606f | 84 | tree gfor_fndecl_generate_error; |
944b8b35 | 85 | tree gfor_fndecl_set_fpe; |
68d2e027 | 86 | tree gfor_fndecl_set_options; |
eaa90d25 | 87 | tree gfor_fndecl_set_convert; |
d67ab5ee | 88 | tree gfor_fndecl_set_record_marker; |
07b3bbf2 | 89 | tree gfor_fndecl_set_max_subrecord_length; |
35059811 FXC |
90 | tree gfor_fndecl_ctime; |
91 | tree gfor_fndecl_fdate; | |
25fc05eb | 92 | tree gfor_fndecl_ttynam; |
6de9cd9a DN |
93 | tree gfor_fndecl_in_pack; |
94 | tree gfor_fndecl_in_unpack; | |
95 | tree gfor_fndecl_associated; | |
96 | ||
97 | ||
98 | /* Math functions. Many other math functions are handled in | |
99 | trans-intrinsic.c. */ | |
100 | ||
644cb69f | 101 | gfc_powdecl_list gfor_fndecl_math_powi[4][3]; |
6de9cd9a DN |
102 | tree gfor_fndecl_math_ishftc4; |
103 | tree gfor_fndecl_math_ishftc8; | |
644cb69f | 104 | tree gfor_fndecl_math_ishftc16; |
6de9cd9a DN |
105 | |
106 | ||
107 | /* String functions. */ | |
108 | ||
6de9cd9a DN |
109 | tree gfor_fndecl_compare_string; |
110 | tree gfor_fndecl_concat_string; | |
111 | tree gfor_fndecl_string_len_trim; | |
112 | tree gfor_fndecl_string_index; | |
113 | tree gfor_fndecl_string_scan; | |
114 | tree gfor_fndecl_string_verify; | |
115 | tree gfor_fndecl_string_trim; | |
2263c775 | 116 | tree gfor_fndecl_string_minmax; |
6de9cd9a DN |
117 | tree gfor_fndecl_adjustl; |
118 | tree gfor_fndecl_adjustr; | |
119 | ||
120 | ||
121 | /* Other misc. runtime library functions. */ | |
122 | ||
123 | tree gfor_fndecl_size0; | |
124 | tree gfor_fndecl_size1; | |
b41b2534 | 125 | tree gfor_fndecl_iargc; |
6de9cd9a | 126 | |
a39fafac FXC |
127 | /* Intrinsic functions implemented in Fortran. */ |
128 | tree gfor_fndecl_sc_kind; | |
6de9cd9a DN |
129 | tree gfor_fndecl_si_kind; |
130 | tree gfor_fndecl_sr_kind; | |
131 | ||
5a0aad31 FXC |
132 | /* BLAS gemm functions. */ |
133 | tree gfor_fndecl_sgemm; | |
134 | tree gfor_fndecl_dgemm; | |
135 | tree gfor_fndecl_cgemm; | |
136 | tree gfor_fndecl_zgemm; | |
137 | ||
6de9cd9a DN |
138 | |
139 | static void | |
140 | gfc_add_decl_to_parent_function (tree decl) | |
141 | { | |
6e45f57b | 142 | gcc_assert (decl); |
6de9cd9a DN |
143 | DECL_CONTEXT (decl) = DECL_CONTEXT (current_function_decl); |
144 | DECL_NONLOCAL (decl) = 1; | |
145 | TREE_CHAIN (decl) = saved_parent_function_decls; | |
146 | saved_parent_function_decls = decl; | |
147 | } | |
148 | ||
149 | void | |
150 | gfc_add_decl_to_function (tree decl) | |
151 | { | |
6e45f57b | 152 | gcc_assert (decl); |
6de9cd9a DN |
153 | TREE_USED (decl) = 1; |
154 | DECL_CONTEXT (decl) = current_function_decl; | |
155 | TREE_CHAIN (decl) = saved_function_decls; | |
156 | saved_function_decls = decl; | |
157 | } | |
158 | ||
159 | ||
c006df4e SB |
160 | /* Build a backend label declaration. Set TREE_USED for named labels. |
161 | The context of the label is always the current_function_decl. All | |
162 | labels are marked artificial. */ | |
6de9cd9a DN |
163 | |
164 | tree | |
165 | gfc_build_label_decl (tree label_id) | |
166 | { | |
167 | /* 2^32 temporaries should be enough. */ | |
168 | static unsigned int tmp_num = 1; | |
169 | tree label_decl; | |
170 | char *label_name; | |
171 | ||
172 | if (label_id == NULL_TREE) | |
173 | { | |
174 | /* Build an internal label name. */ | |
175 | ASM_FORMAT_PRIVATE_NAME (label_name, "L", tmp_num++); | |
176 | label_id = get_identifier (label_name); | |
177 | } | |
178 | else | |
179 | label_name = NULL; | |
180 | ||
181 | /* Build the LABEL_DECL node. Labels have no type. */ | |
182 | label_decl = build_decl (LABEL_DECL, label_id, void_type_node); | |
183 | DECL_CONTEXT (label_decl) = current_function_decl; | |
184 | DECL_MODE (label_decl) = VOIDmode; | |
185 | ||
c006df4e SB |
186 | /* We always define the label as used, even if the original source |
187 | file never references the label. We don't want all kinds of | |
188 | spurious warnings for old-style Fortran code with too many | |
189 | labels. */ | |
190 | TREE_USED (label_decl) = 1; | |
6de9cd9a | 191 | |
c006df4e | 192 | DECL_ARTIFICIAL (label_decl) = 1; |
6de9cd9a DN |
193 | return label_decl; |
194 | } | |
195 | ||
196 | ||
197 | /* Returns the return label for the current function. */ | |
198 | ||
199 | tree | |
200 | gfc_get_return_label (void) | |
201 | { | |
202 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
203 | ||
204 | if (current_function_return_label) | |
205 | return current_function_return_label; | |
206 | ||
207 | sprintf (name, "__return_%s", | |
208 | IDENTIFIER_POINTER (DECL_NAME (current_function_decl))); | |
209 | ||
210 | current_function_return_label = | |
211 | gfc_build_label_decl (get_identifier (name)); | |
212 | ||
213 | DECL_ARTIFICIAL (current_function_return_label) = 1; | |
214 | ||
215 | return current_function_return_label; | |
216 | } | |
217 | ||
218 | ||
c8cc8542 PB |
219 | /* Set the backend source location of a decl. */ |
220 | ||
221 | void | |
222 | gfc_set_decl_location (tree decl, locus * loc) | |
223 | { | |
c8cc8542 | 224 | DECL_SOURCE_LOCATION (decl) = loc->lb->location; |
c8cc8542 PB |
225 | } |
226 | ||
227 | ||
6de9cd9a DN |
228 | /* Return the backend label declaration for a given label structure, |
229 | or create it if it doesn't exist yet. */ | |
230 | ||
231 | tree | |
232 | gfc_get_label_decl (gfc_st_label * lp) | |
233 | { | |
6de9cd9a DN |
234 | if (lp->backend_decl) |
235 | return lp->backend_decl; | |
236 | else | |
237 | { | |
238 | char label_name[GFC_MAX_SYMBOL_LEN + 1]; | |
239 | tree label_decl; | |
240 | ||
241 | /* Validate the label declaration from the front end. */ | |
6e45f57b | 242 | gcc_assert (lp != NULL && lp->value <= MAX_LABEL_VALUE); |
6de9cd9a DN |
243 | |
244 | /* Build a mangled name for the label. */ | |
245 | sprintf (label_name, "__label_%.6d", lp->value); | |
246 | ||
247 | /* Build the LABEL_DECL node. */ | |
248 | label_decl = gfc_build_label_decl (get_identifier (label_name)); | |
249 | ||
250 | /* Tell the debugger where the label came from. */ | |
f8d0aee5 | 251 | if (lp->value <= MAX_LABEL_VALUE) /* An internal label. */ |
c8cc8542 | 252 | gfc_set_decl_location (label_decl, &lp->where); |
6de9cd9a DN |
253 | else |
254 | DECL_ARTIFICIAL (label_decl) = 1; | |
255 | ||
256 | /* Store the label in the label list and return the LABEL_DECL. */ | |
257 | lp->backend_decl = label_decl; | |
258 | return label_decl; | |
259 | } | |
260 | } | |
261 | ||
262 | ||
263 | /* Convert a gfc_symbol to an identifier of the same name. */ | |
264 | ||
265 | static tree | |
266 | gfc_sym_identifier (gfc_symbol * sym) | |
267 | { | |
268 | return (get_identifier (sym->name)); | |
269 | } | |
270 | ||
271 | ||
272 | /* Construct mangled name from symbol name. */ | |
273 | ||
274 | static tree | |
275 | gfc_sym_mangled_identifier (gfc_symbol * sym) | |
276 | { | |
277 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
278 | ||
a8b3b0b6 CR |
279 | /* Prevent the mangling of identifiers that have an assigned |
280 | binding label (mainly those that are bind(c)). */ | |
281 | if (sym->attr.is_bind_c == 1 | |
282 | && sym->binding_label[0] != '\0') | |
283 | return get_identifier(sym->binding_label); | |
284 | ||
cb9e4f55 | 285 | if (sym->module == NULL) |
6de9cd9a DN |
286 | return gfc_sym_identifier (sym); |
287 | else | |
288 | { | |
9998ef84 | 289 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
6de9cd9a DN |
290 | return get_identifier (name); |
291 | } | |
292 | } | |
293 | ||
294 | ||
295 | /* Construct mangled function name from symbol name. */ | |
296 | ||
297 | static tree | |
298 | gfc_sym_mangled_function_id (gfc_symbol * sym) | |
299 | { | |
300 | int has_underscore; | |
301 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1]; | |
302 | ||
a8b3b0b6 CR |
303 | /* It may be possible to simply use the binding label if it's |
304 | provided, and remove the other checks. Then we could use it | |
305 | for other things if we wished. */ | |
306 | if ((sym->attr.is_bind_c == 1 || sym->attr.is_iso_c == 1) && | |
307 | sym->binding_label[0] != '\0') | |
308 | /* use the binding label rather than the mangled name */ | |
309 | return get_identifier (sym->binding_label); | |
310 | ||
cb9e4f55 | 311 | if (sym->module == NULL || sym->attr.proc == PROC_EXTERNAL |
c89686a8 PT |
312 | || (sym->module != NULL && (sym->attr.external |
313 | || sym->attr.if_source == IFSRC_IFBODY))) | |
6de9cd9a | 314 | { |
ecf24057 FXC |
315 | /* Main program is mangled into MAIN__. */ |
316 | if (sym->attr.is_main_program) | |
317 | return get_identifier ("MAIN__"); | |
318 | ||
319 | /* Intrinsic procedures are never mangled. */ | |
320 | if (sym->attr.proc == PROC_INTRINSIC) | |
6de9cd9a DN |
321 | return get_identifier (sym->name); |
322 | ||
323 | if (gfc_option.flag_underscoring) | |
324 | { | |
325 | has_underscore = strchr (sym->name, '_') != 0; | |
326 | if (gfc_option.flag_second_underscore && has_underscore) | |
327 | snprintf (name, sizeof name, "%s__", sym->name); | |
328 | else | |
329 | snprintf (name, sizeof name, "%s_", sym->name); | |
330 | return get_identifier (name); | |
331 | } | |
332 | else | |
333 | return get_identifier (sym->name); | |
334 | } | |
335 | else | |
336 | { | |
9998ef84 | 337 | snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name); |
6de9cd9a DN |
338 | return get_identifier (name); |
339 | } | |
340 | } | |
341 | ||
342 | ||
bae88af6 TS |
343 | /* Returns true if a variable of specified size should go on the stack. */ |
344 | ||
345 | int | |
346 | gfc_can_put_var_on_stack (tree size) | |
347 | { | |
348 | unsigned HOST_WIDE_INT low; | |
349 | ||
350 | if (!INTEGER_CST_P (size)) | |
351 | return 0; | |
352 | ||
353 | if (gfc_option.flag_max_stack_var_size < 0) | |
354 | return 1; | |
355 | ||
356 | if (TREE_INT_CST_HIGH (size) != 0) | |
357 | return 0; | |
358 | ||
359 | low = TREE_INT_CST_LOW (size); | |
360 | if (low > (unsigned HOST_WIDE_INT) gfc_option.flag_max_stack_var_size) | |
361 | return 0; | |
362 | ||
363 | /* TODO: Set a per-function stack size limit. */ | |
364 | ||
365 | return 1; | |
366 | } | |
367 | ||
368 | ||
b122dc6a JJ |
369 | /* gfc_finish_cray_pointee sets DECL_VALUE_EXPR for a Cray pointee to |
370 | an expression involving its corresponding pointer. There are | |
371 | 2 cases; one for variable size arrays, and one for everything else, | |
372 | because variable-sized arrays require one fewer level of | |
373 | indirection. */ | |
374 | ||
375 | static void | |
376 | gfc_finish_cray_pointee (tree decl, gfc_symbol *sym) | |
377 | { | |
378 | tree ptr_decl = gfc_get_symbol_decl (sym->cp_pointer); | |
379 | tree value; | |
380 | ||
381 | /* Parameters need to be dereferenced. */ | |
382 | if (sym->cp_pointer->attr.dummy) | |
38611275 | 383 | ptr_decl = build_fold_indirect_ref (ptr_decl); |
b122dc6a JJ |
384 | |
385 | /* Check to see if we're dealing with a variable-sized array. */ | |
386 | if (sym->attr.dimension | |
387 | && TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE) | |
388 | { | |
831d7813 | 389 | /* These decls will be dereferenced later, so we don't dereference |
b122dc6a JJ |
390 | them here. */ |
391 | value = convert (TREE_TYPE (decl), ptr_decl); | |
392 | } | |
393 | else | |
394 | { | |
395 | ptr_decl = convert (build_pointer_type (TREE_TYPE (decl)), | |
396 | ptr_decl); | |
38611275 | 397 | value = build_fold_indirect_ref (ptr_decl); |
b122dc6a JJ |
398 | } |
399 | ||
400 | SET_DECL_VALUE_EXPR (decl, value); | |
401 | DECL_HAS_VALUE_EXPR_P (decl) = 1; | |
6c7a4dfd | 402 | GFC_DECL_CRAY_POINTEE (decl) = 1; |
b122dc6a JJ |
403 | /* This is a fake variable just for debugging purposes. */ |
404 | TREE_ASM_WRITTEN (decl) = 1; | |
405 | } | |
406 | ||
407 | ||
faf28b3a | 408 | /* Finish processing of a declaration without an initial value. */ |
6de9cd9a DN |
409 | |
410 | static void | |
faf28b3a | 411 | gfc_finish_decl (tree decl) |
6de9cd9a | 412 | { |
faf28b3a TS |
413 | gcc_assert (TREE_CODE (decl) == PARM_DECL |
414 | || DECL_INITIAL (decl) == NULL_TREE); | |
6de9cd9a | 415 | |
faf28b3a TS |
416 | if (TREE_CODE (decl) != VAR_DECL) |
417 | return; | |
6de9cd9a | 418 | |
faf28b3a TS |
419 | if (DECL_SIZE (decl) == NULL_TREE |
420 | && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE) | |
421 | layout_decl (decl, 0); | |
422 | ||
423 | /* A few consistency checks. */ | |
424 | /* A static variable with an incomplete type is an error if it is | |
425 | initialized. Also if it is not file scope. Otherwise, let it | |
426 | through, but if it is not `extern' then it may cause an error | |
427 | message later. */ | |
428 | /* An automatic variable with an incomplete type is an error. */ | |
429 | ||
430 | /* We should know the storage size. */ | |
431 | gcc_assert (DECL_SIZE (decl) != NULL_TREE | |
432 | || (TREE_STATIC (decl) | |
433 | ? (!DECL_INITIAL (decl) || !DECL_CONTEXT (decl)) | |
434 | : DECL_EXTERNAL (decl))); | |
435 | ||
436 | /* The storage size should be constant. */ | |
437 | gcc_assert ((!DECL_EXTERNAL (decl) && !TREE_STATIC (decl)) | |
438 | || !DECL_SIZE (decl) | |
439 | || TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST); | |
6de9cd9a DN |
440 | } |
441 | ||
442 | ||
443 | /* Apply symbol attributes to a variable, and add it to the function scope. */ | |
444 | ||
445 | static void | |
446 | gfc_finish_var_decl (tree decl, gfc_symbol * sym) | |
447 | { | |
77bb16aa | 448 | tree new; |
f8d0aee5 | 449 | /* TREE_ADDRESSABLE means the address of this variable is actually needed. |
6de9cd9a DN |
450 | This is the equivalent of the TARGET variables. |
451 | We also need to set this if the variable is passed by reference in a | |
452 | CALL statement. */ | |
83d890b9 | 453 | |
b122dc6a | 454 | /* Set DECL_VALUE_EXPR for Cray Pointees. */ |
83d890b9 | 455 | if (sym->attr.cray_pointee) |
b122dc6a | 456 | gfc_finish_cray_pointee (decl, sym); |
83d890b9 | 457 | |
6de9cd9a DN |
458 | if (sym->attr.target) |
459 | TREE_ADDRESSABLE (decl) = 1; | |
460 | /* If it wasn't used we wouldn't be getting it. */ | |
461 | TREE_USED (decl) = 1; | |
462 | ||
463 | /* Chain this decl to the pending declarations. Don't do pushdecl() | |
464 | because this would add them to the current scope rather than the | |
465 | function scope. */ | |
466 | if (current_function_decl != NULL_TREE) | |
467 | { | |
d48734ef EE |
468 | if (sym->ns->proc_name->backend_decl == current_function_decl |
469 | || sym->result == sym) | |
6de9cd9a DN |
470 | gfc_add_decl_to_function (decl); |
471 | else | |
472 | gfc_add_decl_to_parent_function (decl); | |
473 | } | |
474 | ||
b122dc6a JJ |
475 | if (sym->attr.cray_pointee) |
476 | return; | |
477 | ||
a8b3b0b6 CR |
478 | if(sym->attr.is_bind_c == 1) |
479 | { | |
480 | /* We need to put variables that are bind(c) into the common | |
481 | segment of the object file, because this is what C would do. | |
482 | gfortran would typically put them in either the BSS or | |
483 | initialized data segments, and only mark them as common if | |
484 | they were part of common blocks. However, if they are not put | |
485 | into common space, then C cannot initialize global fortran | |
486 | variables that it interoperates with and the draft says that | |
487 | either Fortran or C should be able to initialize it (but not | |
488 | both, of course.) (J3/04-007, section 15.3). */ | |
489 | TREE_PUBLIC(decl) = 1; | |
490 | DECL_COMMON(decl) = 1; | |
491 | } | |
492 | ||
6de9cd9a DN |
493 | /* If a variable is USE associated, it's always external. */ |
494 | if (sym->attr.use_assoc) | |
495 | { | |
496 | DECL_EXTERNAL (decl) = 1; | |
497 | TREE_PUBLIC (decl) = 1; | |
498 | } | |
cb9e4f55 | 499 | else if (sym->module && !sym->attr.result && !sym->attr.dummy) |
6de9cd9a | 500 | { |
adf3ed3f | 501 | /* TODO: Don't set sym->module for result or dummy variables. */ |
d48734ef | 502 | gcc_assert (current_function_decl == NULL_TREE || sym->result == sym); |
6de9cd9a DN |
503 | /* This is the declaration of a module variable. */ |
504 | TREE_PUBLIC (decl) = 1; | |
505 | TREE_STATIC (decl) = 1; | |
506 | } | |
507 | ||
b7b184a8 PT |
508 | /* Derived types are a bit peculiar because of the possibility of |
509 | a default initializer; this must be applied each time the variable | |
510 | comes into scope it therefore need not be static. These variables | |
511 | are SAVE_NONE but have an initializer. Otherwise explicitly | |
512 | intitialized variables are SAVE_IMPLICIT and explicitly saved are | |
513 | SAVE_EXPLICIT. */ | |
514 | if (!sym->attr.use_assoc | |
515 | && (sym->attr.save != SAVE_NONE || sym->attr.data | |
516 | || (sym->value && sym->ns->proc_name->attr.is_main_program))) | |
6de9cd9a | 517 | TREE_STATIC (decl) = 1; |
775e6c3a TB |
518 | |
519 | if (sym->attr.volatile_) | |
520 | { | |
775e6c3a TB |
521 | TREE_THIS_VOLATILE (decl) = 1; |
522 | new = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE); | |
523 | TREE_TYPE (decl) = new; | |
524 | } | |
525 | ||
6de9cd9a DN |
526 | /* Keep variables larger than max-stack-var-size off stack. */ |
527 | if (!sym->ns->proc_name->attr.recursive | |
528 | && INTEGER_CST_P (DECL_SIZE_UNIT (decl)) | |
9eccb94d JJ |
529 | && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) |
530 | /* Put variable length auto array pointers always into stack. */ | |
531 | && (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE | |
532 | || sym->attr.dimension == 0 | |
533 | || sym->as->type != AS_EXPLICIT | |
534 | || sym->attr.pointer | |
535 | || sym->attr.allocatable) | |
536 | && !DECL_ARTIFICIAL (decl)) | |
6de9cd9a | 537 | TREE_STATIC (decl) = 1; |
6c7a4dfd JJ |
538 | |
539 | /* Handle threadprivate variables. */ | |
8893239d | 540 | if (sym->attr.threadprivate |
6c7a4dfd JJ |
541 | && (TREE_STATIC (decl) || DECL_EXTERNAL (decl))) |
542 | DECL_TLS_MODEL (decl) = decl_default_tls_model (decl); | |
6de9cd9a DN |
543 | } |
544 | ||
545 | ||
546 | /* Allocate the lang-specific part of a decl. */ | |
547 | ||
548 | void | |
549 | gfc_allocate_lang_decl (tree decl) | |
550 | { | |
551 | DECL_LANG_SPECIFIC (decl) = (struct lang_decl *) | |
552 | ggc_alloc_cleared (sizeof (struct lang_decl)); | |
553 | } | |
554 | ||
555 | /* Remember a symbol to generate initialization/cleanup code at function | |
556 | entry/exit. */ | |
557 | ||
558 | static void | |
559 | gfc_defer_symbol_init (gfc_symbol * sym) | |
560 | { | |
561 | gfc_symbol *p; | |
562 | gfc_symbol *last; | |
563 | gfc_symbol *head; | |
564 | ||
565 | /* Don't add a symbol twice. */ | |
566 | if (sym->tlink) | |
567 | return; | |
568 | ||
569 | last = head = sym->ns->proc_name; | |
570 | p = last->tlink; | |
571 | ||
572 | /* Make sure that setup code for dummy variables which are used in the | |
573 | setup of other variables is generated first. */ | |
574 | if (sym->attr.dummy) | |
575 | { | |
576 | /* Find the first dummy arg seen after us, or the first non-dummy arg. | |
577 | This is a circular list, so don't go past the head. */ | |
578 | while (p != head | |
579 | && (!p->attr.dummy || p->dummy_order > sym->dummy_order)) | |
580 | { | |
581 | last = p; | |
582 | p = p->tlink; | |
583 | } | |
584 | } | |
585 | /* Insert in between last and p. */ | |
586 | last->tlink = sym; | |
587 | sym->tlink = p; | |
588 | } | |
589 | ||
590 | ||
591 | /* Create an array index type variable with function scope. */ | |
592 | ||
593 | static tree | |
594 | create_index_var (const char * pfx, int nest) | |
595 | { | |
596 | tree decl; | |
597 | ||
598 | decl = gfc_create_var_np (gfc_array_index_type, pfx); | |
599 | if (nest) | |
600 | gfc_add_decl_to_parent_function (decl); | |
601 | else | |
602 | gfc_add_decl_to_function (decl); | |
603 | return decl; | |
604 | } | |
605 | ||
606 | ||
607 | /* Create variables to hold all the non-constant bits of info for a | |
608 | descriptorless array. Remember these in the lang-specific part of the | |
609 | type. */ | |
610 | ||
611 | static void | |
612 | gfc_build_qualified_array (tree decl, gfc_symbol * sym) | |
613 | { | |
614 | tree type; | |
615 | int dim; | |
616 | int nest; | |
617 | ||
618 | type = TREE_TYPE (decl); | |
619 | ||
620 | /* We just use the descriptor, if there is one. */ | |
621 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
622 | return; | |
623 | ||
6e45f57b | 624 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
6de9cd9a DN |
625 | nest = (sym->ns->proc_name->backend_decl != current_function_decl) |
626 | && !sym->attr.contained; | |
627 | ||
628 | for (dim = 0; dim < GFC_TYPE_ARRAY_RANK (type); dim++) | |
629 | { | |
630 | if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE) | |
01306727 FXC |
631 | { |
632 | GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest); | |
633 | TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1; | |
634 | } | |
aa9c57ec | 635 | /* Don't try to use the unknown bound for assumed shape arrays. */ |
6de9cd9a DN |
636 | if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE |
637 | && (sym->as->type != AS_ASSUMED_SIZE | |
638 | || dim < GFC_TYPE_ARRAY_RANK (type) - 1)) | |
01306727 FXC |
639 | { |
640 | GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest); | |
641 | TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1; | |
642 | } | |
6de9cd9a DN |
643 | |
644 | if (GFC_TYPE_ARRAY_STRIDE (type, dim) == NULL_TREE) | |
01306727 FXC |
645 | { |
646 | GFC_TYPE_ARRAY_STRIDE (type, dim) = create_index_var ("stride", nest); | |
647 | TREE_NO_WARNING (GFC_TYPE_ARRAY_STRIDE (type, dim)) = 1; | |
648 | } | |
6de9cd9a DN |
649 | } |
650 | if (GFC_TYPE_ARRAY_OFFSET (type) == NULL_TREE) | |
651 | { | |
652 | GFC_TYPE_ARRAY_OFFSET (type) = gfc_create_var_np (gfc_array_index_type, | |
653 | "offset"); | |
01306727 FXC |
654 | TREE_NO_WARNING (GFC_TYPE_ARRAY_OFFSET (type)) = 1; |
655 | ||
6de9cd9a DN |
656 | if (nest) |
657 | gfc_add_decl_to_parent_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
658 | else | |
659 | gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type)); | |
660 | } | |
417ab240 JJ |
661 | |
662 | if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE | |
663 | && sym->as->type != AS_ASSUMED_SIZE) | |
01306727 FXC |
664 | { |
665 | GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest); | |
666 | TREE_NO_WARNING (GFC_TYPE_ARRAY_SIZE (type)) = 1; | |
667 | } | |
417ab240 JJ |
668 | |
669 | if (POINTER_TYPE_P (type)) | |
670 | { | |
671 | gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type))); | |
672 | gcc_assert (TYPE_LANG_SPECIFIC (type) | |
673 | == TYPE_LANG_SPECIFIC (TREE_TYPE (type))); | |
674 | type = TREE_TYPE (type); | |
675 | } | |
676 | ||
677 | if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type)) | |
678 | { | |
679 | tree size, range; | |
680 | ||
44855d8c TS |
681 | size = fold_build2 (MINUS_EXPR, gfc_array_index_type, |
682 | GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node); | |
417ab240 JJ |
683 | range = build_range_type (gfc_array_index_type, gfc_index_zero_node, |
684 | size); | |
685 | TYPE_DOMAIN (type) = range; | |
686 | layout_type (type); | |
687 | } | |
6de9cd9a DN |
688 | } |
689 | ||
690 | ||
691 | /* For some dummy arguments we don't use the actual argument directly. | |
bae88af6 | 692 | Instead we create a local decl and use that. This allows us to perform |
6de9cd9a DN |
693 | initialization, and construct full type information. */ |
694 | ||
695 | static tree | |
696 | gfc_build_dummy_array_decl (gfc_symbol * sym, tree dummy) | |
697 | { | |
698 | tree decl; | |
699 | tree type; | |
700 | gfc_array_spec *as; | |
701 | char *name; | |
dcfef7d4 | 702 | gfc_packed packed; |
6de9cd9a DN |
703 | int n; |
704 | bool known_size; | |
705 | ||
706 | if (sym->attr.pointer || sym->attr.allocatable) | |
707 | return dummy; | |
708 | ||
709 | /* Add to list of variables if not a fake result variable. */ | |
710 | if (sym->attr.result || sym->attr.dummy) | |
711 | gfc_defer_symbol_init (sym); | |
712 | ||
713 | type = TREE_TYPE (dummy); | |
6e45f57b | 714 | gcc_assert (TREE_CODE (dummy) == PARM_DECL |
6de9cd9a DN |
715 | && POINTER_TYPE_P (type)); |
716 | ||
f8d0aee5 | 717 | /* Do we know the element size? */ |
6de9cd9a DN |
718 | known_size = sym->ts.type != BT_CHARACTER |
719 | || INTEGER_CST_P (sym->ts.cl->backend_decl); | |
720 | ||
721 | if (known_size && !GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (type))) | |
722 | { | |
723 | /* For descriptorless arrays with known element size the actual | |
724 | argument is sufficient. */ | |
6e45f57b | 725 | gcc_assert (GFC_ARRAY_TYPE_P (type)); |
6de9cd9a DN |
726 | gfc_build_qualified_array (dummy, sym); |
727 | return dummy; | |
728 | } | |
729 | ||
730 | type = TREE_TYPE (type); | |
731 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
732 | { | |
fa951694 | 733 | /* Create a descriptorless array pointer. */ |
6de9cd9a | 734 | as = sym->as; |
dcfef7d4 | 735 | packed = PACKED_NO; |
6de9cd9a DN |
736 | if (!gfc_option.flag_repack_arrays) |
737 | { | |
738 | if (as->type == AS_ASSUMED_SIZE) | |
dcfef7d4 | 739 | packed = PACKED_FULL; |
6de9cd9a DN |
740 | } |
741 | else | |
742 | { | |
743 | if (as->type == AS_EXPLICIT) | |
744 | { | |
dcfef7d4 | 745 | packed = PACKED_FULL; |
6de9cd9a DN |
746 | for (n = 0; n < as->rank; n++) |
747 | { | |
748 | if (!(as->upper[n] | |
749 | && as->lower[n] | |
750 | && as->upper[n]->expr_type == EXPR_CONSTANT | |
751 | && as->lower[n]->expr_type == EXPR_CONSTANT)) | |
dcfef7d4 | 752 | packed = PACKED_PARTIAL; |
6de9cd9a DN |
753 | } |
754 | } | |
755 | else | |
dcfef7d4 | 756 | packed = PACKED_PARTIAL; |
6de9cd9a DN |
757 | } |
758 | ||
759 | type = gfc_typenode_for_spec (&sym->ts); | |
760 | type = gfc_get_nodesc_array_type (type, sym->as, packed); | |
761 | } | |
762 | else | |
763 | { | |
764 | /* We now have an expression for the element size, so create a fully | |
765 | qualified type. Reset sym->backend decl or this will just return the | |
766 | old type. */ | |
3e978d30 | 767 | DECL_ARTIFICIAL (sym->backend_decl) = 1; |
6de9cd9a DN |
768 | sym->backend_decl = NULL_TREE; |
769 | type = gfc_sym_type (sym); | |
dcfef7d4 | 770 | packed = PACKED_FULL; |
6de9cd9a DN |
771 | } |
772 | ||
773 | ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0); | |
774 | decl = build_decl (VAR_DECL, get_identifier (name), type); | |
775 | ||
776 | DECL_ARTIFICIAL (decl) = 1; | |
777 | TREE_PUBLIC (decl) = 0; | |
778 | TREE_STATIC (decl) = 0; | |
779 | DECL_EXTERNAL (decl) = 0; | |
780 | ||
781 | /* We should never get deferred shape arrays here. We used to because of | |
782 | frontend bugs. */ | |
6e45f57b | 783 | gcc_assert (sym->as->type != AS_DEFERRED); |
6de9cd9a | 784 | |
dcfef7d4 TS |
785 | if (packed == PACKED_PARTIAL) |
786 | GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1; | |
787 | else if (packed == PACKED_FULL) | |
788 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
6de9cd9a DN |
789 | |
790 | gfc_build_qualified_array (decl, sym); | |
791 | ||
792 | if (DECL_LANG_SPECIFIC (dummy)) | |
793 | DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (dummy); | |
794 | else | |
795 | gfc_allocate_lang_decl (decl); | |
796 | ||
797 | GFC_DECL_SAVED_DESCRIPTOR (decl) = dummy; | |
798 | ||
799 | if (sym->ns->proc_name->backend_decl == current_function_decl | |
800 | || sym->attr.contained) | |
801 | gfc_add_decl_to_function (decl); | |
802 | else | |
803 | gfc_add_decl_to_parent_function (decl); | |
804 | ||
805 | return decl; | |
806 | } | |
807 | ||
808 | ||
809 | /* Return a constant or a variable to use as a string length. Does not | |
810 | add the decl to the current scope. */ | |
811 | ||
812 | static tree | |
813 | gfc_create_string_length (gfc_symbol * sym) | |
814 | { | |
815 | tree length; | |
816 | ||
6e45f57b | 817 | gcc_assert (sym->ts.cl); |
6de9cd9a DN |
818 | gfc_conv_const_charlen (sym->ts.cl); |
819 | ||
820 | if (sym->ts.cl->backend_decl == NULL_TREE) | |
821 | { | |
822 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2]; | |
823 | ||
824 | /* Also prefix the mangled name. */ | |
825 | strcpy (&name[1], sym->name); | |
826 | name[0] = '.'; | |
827 | length = build_decl (VAR_DECL, get_identifier (name), | |
d7177ab2 | 828 | gfc_charlen_type_node); |
6de9cd9a DN |
829 | DECL_ARTIFICIAL (length) = 1; |
830 | TREE_USED (length) = 1; | |
417ab240 JJ |
831 | if (sym->ns->proc_name->tlink != NULL) |
832 | gfc_defer_symbol_init (sym); | |
6de9cd9a DN |
833 | sym->ts.cl->backend_decl = length; |
834 | } | |
835 | ||
836 | return sym->ts.cl->backend_decl; | |
837 | } | |
838 | ||
910450c1 FW |
839 | /* If a variable is assigned a label, we add another two auxiliary |
840 | variables. */ | |
841 | ||
842 | static void | |
843 | gfc_add_assign_aux_vars (gfc_symbol * sym) | |
844 | { | |
845 | tree addr; | |
846 | tree length; | |
847 | tree decl; | |
848 | ||
849 | gcc_assert (sym->backend_decl); | |
850 | ||
851 | decl = sym->backend_decl; | |
852 | gfc_allocate_lang_decl (decl); | |
853 | GFC_DECL_ASSIGN (decl) = 1; | |
854 | length = build_decl (VAR_DECL, create_tmp_var_name (sym->name), | |
855 | gfc_charlen_type_node); | |
856 | addr = build_decl (VAR_DECL, create_tmp_var_name (sym->name), | |
857 | pvoid_type_node); | |
858 | gfc_finish_var_decl (length, sym); | |
859 | gfc_finish_var_decl (addr, sym); | |
860 | /* STRING_LENGTH is also used as flag. Less than -1 means that | |
861 | ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the | |
862 | target label's address. Otherwise, value is the length of a format string | |
863 | and ASSIGN_ADDR is its address. */ | |
864 | if (TREE_STATIC (length)) | |
865 | DECL_INITIAL (length) = build_int_cst (NULL_TREE, -2); | |
866 | else | |
867 | gfc_defer_symbol_init (sym); | |
868 | ||
869 | GFC_DECL_STRING_LEN (decl) = length; | |
870 | GFC_DECL_ASSIGN_ADDR (decl) = addr; | |
871 | } | |
6de9cd9a DN |
872 | |
873 | /* Return the decl for a gfc_symbol, create it if it doesn't already | |
874 | exist. */ | |
875 | ||
876 | tree | |
877 | gfc_get_symbol_decl (gfc_symbol * sym) | |
878 | { | |
879 | tree decl; | |
880 | tree length = NULL_TREE; | |
6de9cd9a DN |
881 | int byref; |
882 | ||
61321991 | 883 | gcc_assert (sym->attr.referenced |
c60a84b8 PT |
884 | || sym->attr.use_assoc |
885 | || sym->ns->proc_name->attr.if_source == IFSRC_IFBODY); | |
6de9cd9a DN |
886 | |
887 | if (sym->ns && sym->ns->proc_name->attr.function) | |
888 | byref = gfc_return_by_reference (sym->ns->proc_name); | |
889 | else | |
890 | byref = 0; | |
891 | ||
892 | if ((sym->attr.dummy && ! sym->attr.function) || (sym->attr.result && byref)) | |
893 | { | |
894 | /* Return via extra parameter. */ | |
895 | if (sym->attr.result && byref | |
896 | && !sym->backend_decl) | |
897 | { | |
898 | sym->backend_decl = | |
899 | DECL_ARGUMENTS (sym->ns->proc_name->backend_decl); | |
d198b59a JJ |
900 | /* For entry master function skip over the __entry |
901 | argument. */ | |
902 | if (sym->ns->proc_name->attr.entry_master) | |
903 | sym->backend_decl = TREE_CHAIN (sym->backend_decl); | |
6de9cd9a DN |
904 | } |
905 | ||
906 | /* Dummy variables should already have been created. */ | |
6e45f57b | 907 | gcc_assert (sym->backend_decl); |
6de9cd9a DN |
908 | |
909 | /* Create a character length variable. */ | |
910 | if (sym->ts.type == BT_CHARACTER) | |
911 | { | |
912 | if (sym->ts.cl->backend_decl == NULL_TREE) | |
417ab240 JJ |
913 | length = gfc_create_string_length (sym); |
914 | else | |
915 | length = sym->ts.cl->backend_decl; | |
916 | if (TREE_CODE (length) == VAR_DECL | |
917 | && DECL_CONTEXT (length) == NULL_TREE) | |
6de9cd9a | 918 | { |
3e978d30 PT |
919 | /* Add the string length to the same context as the symbol. */ |
920 | if (DECL_CONTEXT (sym->backend_decl) == current_function_decl) | |
921 | gfc_add_decl_to_function (length); | |
922 | else | |
923 | gfc_add_decl_to_parent_function (length); | |
924 | ||
925 | gcc_assert (DECL_CONTEXT (sym->backend_decl) == | |
926 | DECL_CONTEXT (length)); | |
927 | ||
417ab240 | 928 | gfc_defer_symbol_init (sym); |
a41baa64 | 929 | } |
6de9cd9a DN |
930 | } |
931 | ||
932 | /* Use a copy of the descriptor for dummy arrays. */ | |
933 | if (sym->attr.dimension && !TREE_USED (sym->backend_decl)) | |
934 | { | |
3e978d30 PT |
935 | decl = gfc_build_dummy_array_decl (sym, sym->backend_decl); |
936 | /* Prevent the dummy from being detected as unused if it is copied. */ | |
937 | if (sym->backend_decl != NULL && decl != sym->backend_decl) | |
938 | DECL_ARTIFICIAL (sym->backend_decl) = 1; | |
939 | sym->backend_decl = decl; | |
6de9cd9a DN |
940 | } |
941 | ||
942 | TREE_USED (sym->backend_decl) = 1; | |
910450c1 FW |
943 | if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0) |
944 | { | |
945 | gfc_add_assign_aux_vars (sym); | |
946 | } | |
6de9cd9a DN |
947 | return sym->backend_decl; |
948 | } | |
949 | ||
950 | if (sym->backend_decl) | |
951 | return sym->backend_decl; | |
952 | ||
6de9cd9a DN |
953 | /* Catch function declarations. Only used for actual parameters. */ |
954 | if (sym->attr.flavor == FL_PROCEDURE) | |
955 | { | |
956 | decl = gfc_get_extern_function_decl (sym); | |
957 | return decl; | |
958 | } | |
959 | ||
960 | if (sym->attr.intrinsic) | |
961 | internal_error ("intrinsic variable which isn't a procedure"); | |
962 | ||
963 | /* Create string length decl first so that they can be used in the | |
964 | type declaration. */ | |
965 | if (sym->ts.type == BT_CHARACTER) | |
966 | length = gfc_create_string_length (sym); | |
967 | ||
968 | /* Create the decl for the variable. */ | |
969 | decl = build_decl (VAR_DECL, gfc_sym_identifier (sym), gfc_sym_type (sym)); | |
970 | ||
c8cc8542 PB |
971 | gfc_set_decl_location (decl, &sym->declared_at); |
972 | ||
f8d0aee5 | 973 | /* Symbols from modules should have their assembler names mangled. |
6de9cd9a DN |
974 | This is done here rather than in gfc_finish_var_decl because it |
975 | is different for string length variables. */ | |
cb9e4f55 | 976 | if (sym->module) |
6de9cd9a DN |
977 | SET_DECL_ASSEMBLER_NAME (decl, gfc_sym_mangled_identifier (sym)); |
978 | ||
979 | if (sym->attr.dimension) | |
980 | { | |
981 | /* Create variables to hold the non-constant bits of array info. */ | |
982 | gfc_build_qualified_array (decl, sym); | |
983 | ||
984 | /* Remember this variable for allocation/cleanup. */ | |
985 | gfc_defer_symbol_init (sym); | |
986 | ||
987 | if ((sym->attr.allocatable || !sym->attr.dummy) && !sym->attr.pointer) | |
988 | GFC_DECL_PACKED_ARRAY (decl) = 1; | |
989 | } | |
990 | ||
5046aff5 PT |
991 | if (sym->ts.type == BT_DERIVED && sym->ts.derived->attr.alloc_comp) |
992 | gfc_defer_symbol_init (sym); | |
b7b184a8 PT |
993 | /* This applies a derived type default initializer. */ |
994 | else if (sym->ts.type == BT_DERIVED | |
995 | && sym->attr.save == SAVE_NONE | |
996 | && !sym->attr.data | |
997 | && !sym->attr.allocatable | |
998 | && (sym->value && !sym->ns->proc_name->attr.is_main_program) | |
999 | && !sym->attr.use_assoc) | |
1000 | gfc_defer_symbol_init (sym); | |
5046aff5 | 1001 | |
6de9cd9a DN |
1002 | gfc_finish_var_decl (decl, sym); |
1003 | ||
597073ac | 1004 | if (sym->ts.type == BT_CHARACTER) |
6de9cd9a | 1005 | { |
6de9cd9a DN |
1006 | /* Character variables need special handling. */ |
1007 | gfc_allocate_lang_decl (decl); | |
1008 | ||
597073ac | 1009 | if (TREE_CODE (length) != INTEGER_CST) |
6de9cd9a DN |
1010 | { |
1011 | char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2]; | |
1012 | ||
cb9e4f55 | 1013 | if (sym->module) |
6de9cd9a DN |
1014 | { |
1015 | /* Also prefix the mangled name for symbols from modules. */ | |
1016 | strcpy (&name[1], sym->name); | |
1017 | name[0] = '.'; | |
1018 | strcpy (&name[1], | |
1019 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (length))); | |
1020 | SET_DECL_ASSEMBLER_NAME (decl, get_identifier (name)); | |
1021 | } | |
1022 | gfc_finish_var_decl (length, sym); | |
6e45f57b | 1023 | gcc_assert (!sym->value); |
6de9cd9a | 1024 | } |
6de9cd9a | 1025 | } |
1d6b7f39 PT |
1026 | else if (sym->attr.subref_array_pointer) |
1027 | { | |
1028 | /* We need the span for these beasts. */ | |
1029 | gfc_allocate_lang_decl (decl); | |
1030 | } | |
1031 | ||
1032 | if (sym->attr.subref_array_pointer) | |
1033 | { | |
1034 | tree span; | |
1035 | GFC_DECL_SUBREF_ARRAY_P (decl) = 1; | |
1036 | span = build_decl (VAR_DECL, create_tmp_var_name ("span"), | |
1037 | gfc_array_index_type); | |
1038 | gfc_finish_var_decl (span, sym); | |
1039 | TREE_STATIC (span) = 1; | |
1040 | DECL_INITIAL (span) = build_int_cst (NULL_TREE, 0); | |
1041 | ||
1042 | GFC_DECL_SPAN (decl) = span; | |
1043 | } | |
1044 | ||
6de9cd9a DN |
1045 | sym->backend_decl = decl; |
1046 | ||
910450c1 | 1047 | if (sym->attr.assign) |
6c0e51c4 | 1048 | gfc_add_assign_aux_vars (sym); |
910450c1 | 1049 | |
597073ac PB |
1050 | if (TREE_STATIC (decl) && !sym->attr.use_assoc) |
1051 | { | |
1052 | /* Add static initializer. */ | |
1053 | DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts, | |
1054 | TREE_TYPE (decl), sym->attr.dimension, | |
1055 | sym->attr.pointer || sym->attr.allocatable); | |
1056 | } | |
1057 | ||
6de9cd9a DN |
1058 | return decl; |
1059 | } | |
1060 | ||
1061 | ||
7b5b57b7 PB |
1062 | /* Substitute a temporary variable in place of the real one. */ |
1063 | ||
1064 | void | |
1065 | gfc_shadow_sym (gfc_symbol * sym, tree decl, gfc_saved_var * save) | |
1066 | { | |
1067 | save->attr = sym->attr; | |
1068 | save->decl = sym->backend_decl; | |
1069 | ||
1070 | gfc_clear_attr (&sym->attr); | |
1071 | sym->attr.referenced = 1; | |
1072 | sym->attr.flavor = FL_VARIABLE; | |
1073 | ||
1074 | sym->backend_decl = decl; | |
1075 | } | |
1076 | ||
1077 | ||
1078 | /* Restore the original variable. */ | |
1079 | ||
1080 | void | |
1081 | gfc_restore_sym (gfc_symbol * sym, gfc_saved_var * save) | |
1082 | { | |
1083 | sym->attr = save->attr; | |
1084 | sym->backend_decl = save->decl; | |
1085 | } | |
1086 | ||
1087 | ||
6de9cd9a DN |
1088 | /* Get a basic decl for an external function. */ |
1089 | ||
1090 | tree | |
1091 | gfc_get_extern_function_decl (gfc_symbol * sym) | |
1092 | { | |
1093 | tree type; | |
1094 | tree fndecl; | |
1095 | gfc_expr e; | |
1096 | gfc_intrinsic_sym *isym; | |
1097 | gfc_expr argexpr; | |
e6472bce | 1098 | char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */ |
6de9cd9a DN |
1099 | tree name; |
1100 | tree mangled_name; | |
1101 | ||
1102 | if (sym->backend_decl) | |
1103 | return sym->backend_decl; | |
1104 | ||
3d79abbd PB |
1105 | /* We should never be creating external decls for alternate entry points. |
1106 | The procedure may be an alternate entry point, but we don't want/need | |
1107 | to know that. */ | |
6e45f57b | 1108 | gcc_assert (!(sym->attr.entry || sym->attr.entry_master)); |
3d79abbd | 1109 | |
6de9cd9a DN |
1110 | if (sym->attr.intrinsic) |
1111 | { | |
1112 | /* Call the resolution function to get the actual name. This is | |
1113 | a nasty hack which relies on the resolution functions only looking | |
1114 | at the first argument. We pass NULL for the second argument | |
1115 | otherwise things like AINT get confused. */ | |
1116 | isym = gfc_find_function (sym->name); | |
6e45f57b | 1117 | gcc_assert (isym->resolve.f0 != NULL); |
6de9cd9a DN |
1118 | |
1119 | memset (&e, 0, sizeof (e)); | |
1120 | e.expr_type = EXPR_FUNCTION; | |
1121 | ||
1122 | memset (&argexpr, 0, sizeof (argexpr)); | |
6e45f57b | 1123 | gcc_assert (isym->formal); |
6de9cd9a DN |
1124 | argexpr.ts = isym->formal->ts; |
1125 | ||
1126 | if (isym->formal->next == NULL) | |
1127 | isym->resolve.f1 (&e, &argexpr); | |
1128 | else | |
1129 | { | |
0e7e7e6e FXC |
1130 | if (isym->formal->next->next == NULL) |
1131 | isym->resolve.f2 (&e, &argexpr, NULL); | |
1132 | else | |
1133 | { | |
5cda5098 FXC |
1134 | if (isym->formal->next->next->next == NULL) |
1135 | isym->resolve.f3 (&e, &argexpr, NULL, NULL); | |
1136 | else | |
1137 | { | |
1138 | /* All specific intrinsics take less than 5 arguments. */ | |
1139 | gcc_assert (isym->formal->next->next->next->next == NULL); | |
1140 | isym->resolve.f4 (&e, &argexpr, NULL, NULL, NULL); | |
1141 | } | |
0e7e7e6e | 1142 | } |
6de9cd9a | 1143 | } |
973ff4c0 TS |
1144 | |
1145 | if (gfc_option.flag_f2c | |
1146 | && ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind) | |
1147 | || e.ts.type == BT_COMPLEX)) | |
1148 | { | |
1149 | /* Specific which needs a different implementation if f2c | |
1150 | calling conventions are used. */ | |
e6472bce | 1151 | sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name); |
973ff4c0 TS |
1152 | } |
1153 | else | |
e6472bce | 1154 | sprintf (s, "_gfortran_specific%s", e.value.function.name); |
973ff4c0 | 1155 | |
6de9cd9a DN |
1156 | name = get_identifier (s); |
1157 | mangled_name = name; | |
1158 | } | |
1159 | else | |
1160 | { | |
1161 | name = gfc_sym_identifier (sym); | |
1162 | mangled_name = gfc_sym_mangled_function_id (sym); | |
1163 | } | |
1164 | ||
1165 | type = gfc_get_function_type (sym); | |
1166 | fndecl = build_decl (FUNCTION_DECL, name, type); | |
1167 | ||
1168 | SET_DECL_ASSEMBLER_NAME (fndecl, mangled_name); | |
1169 | /* If the return type is a pointer, avoid alias issues by setting | |
1170 | DECL_IS_MALLOC to nonzero. This means that the function should be | |
1171 | treated as if it were a malloc, meaning it returns a pointer that | |
1172 | is not an alias. */ | |
1173 | if (POINTER_TYPE_P (type)) | |
1174 | DECL_IS_MALLOC (fndecl) = 1; | |
1175 | ||
1176 | /* Set the context of this decl. */ | |
1177 | if (0 && sym->ns && sym->ns->proc_name) | |
1178 | { | |
1179 | /* TODO: Add external decls to the appropriate scope. */ | |
1180 | DECL_CONTEXT (fndecl) = sym->ns->proc_name->backend_decl; | |
1181 | } | |
1182 | else | |
1183 | { | |
f8d0aee5 | 1184 | /* Global declaration, e.g. intrinsic subroutine. */ |
6de9cd9a DN |
1185 | DECL_CONTEXT (fndecl) = NULL_TREE; |
1186 | } | |
1187 | ||
1188 | DECL_EXTERNAL (fndecl) = 1; | |
1189 | ||
f8d0aee5 | 1190 | /* This specifies if a function is globally addressable, i.e. it is |
6de9cd9a DN |
1191 | the opposite of declaring static in C. */ |
1192 | TREE_PUBLIC (fndecl) = 1; | |
1193 | ||
1194 | /* Set attributes for PURE functions. A call to PURE function in the | |
1195 | Fortran 95 sense is both pure and without side effects in the C | |
1196 | sense. */ | |
1197 | if (sym->attr.pure || sym->attr.elemental) | |
1198 | { | |
cf013e9f | 1199 | if (sym->attr.function && !gfc_return_by_reference (sym)) |
becfd6e5 | 1200 | DECL_PURE_P (fndecl) = 1; |
b7e6a6b3 TS |
1201 | /* TODO: check if pure SUBROUTINEs don't have INTENT(OUT) |
1202 | parameters and don't use alternate returns (is this | |
1203 | allowed?). In that case, calls to them are meaningless, and | |
3d79abbd | 1204 | can be optimized away. See also in build_function_decl(). */ |
b7e6a6b3 | 1205 | TREE_SIDE_EFFECTS (fndecl) = 0; |
6de9cd9a DN |
1206 | } |
1207 | ||
fe58e076 TK |
1208 | /* Mark non-returning functions. */ |
1209 | if (sym->attr.noreturn) | |
1210 | TREE_THIS_VOLATILE(fndecl) = 1; | |
1211 | ||
6de9cd9a DN |
1212 | sym->backend_decl = fndecl; |
1213 | ||
1214 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1215 | pushdecl_top_level (fndecl); | |
1216 | ||
1217 | return fndecl; | |
1218 | } | |
1219 | ||
1220 | ||
1221 | /* Create a declaration for a procedure. For external functions (in the C | |
3d79abbd PB |
1222 | sense) use gfc_get_extern_function_decl. HAS_ENTRIES is true if this is |
1223 | a master function with alternate entry points. */ | |
6de9cd9a | 1224 | |
3d79abbd PB |
1225 | static void |
1226 | build_function_decl (gfc_symbol * sym) | |
6de9cd9a | 1227 | { |
3d79abbd | 1228 | tree fndecl, type; |
6de9cd9a | 1229 | symbol_attribute attr; |
3d79abbd | 1230 | tree result_decl; |
6de9cd9a DN |
1231 | gfc_formal_arglist *f; |
1232 | ||
6e45f57b PB |
1233 | gcc_assert (!sym->backend_decl); |
1234 | gcc_assert (!sym->attr.external); | |
6de9cd9a | 1235 | |
c8cc8542 PB |
1236 | /* Set the line and filename. sym->declared_at seems to point to the |
1237 | last statement for subroutines, but it'll do for now. */ | |
1238 | gfc_set_backend_locus (&sym->declared_at); | |
1239 | ||
6de9cd9a | 1240 | /* Allow only one nesting level. Allow public declarations. */ |
6e45f57b | 1241 | gcc_assert (current_function_decl == NULL_TREE |
6de9cd9a DN |
1242 | || DECL_CONTEXT (current_function_decl) == NULL_TREE); |
1243 | ||
1244 | type = gfc_get_function_type (sym); | |
1245 | fndecl = build_decl (FUNCTION_DECL, gfc_sym_identifier (sym), type); | |
1246 | ||
1247 | /* Perform name mangling if this is a top level or module procedure. */ | |
1248 | if (current_function_decl == NULL_TREE) | |
1249 | SET_DECL_ASSEMBLER_NAME (fndecl, gfc_sym_mangled_function_id (sym)); | |
1250 | ||
1251 | /* Figure out the return type of the declared function, and build a | |
f8d0aee5 | 1252 | RESULT_DECL for it. If this is a subroutine with alternate |
6de9cd9a DN |
1253 | returns, build a RESULT_DECL for it. */ |
1254 | attr = sym->attr; | |
1255 | ||
1256 | result_decl = NULL_TREE; | |
1257 | /* TODO: Shouldn't this just be TREE_TYPE (TREE_TYPE (fndecl)). */ | |
1258 | if (attr.function) | |
1259 | { | |
1260 | if (gfc_return_by_reference (sym)) | |
1261 | type = void_type_node; | |
1262 | else | |
1263 | { | |
1264 | if (sym->result != sym) | |
1265 | result_decl = gfc_sym_identifier (sym->result); | |
1266 | ||
1267 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
1268 | } | |
1269 | } | |
1270 | else | |
1271 | { | |
1272 | /* Look for alternate return placeholders. */ | |
1273 | int has_alternate_returns = 0; | |
1274 | for (f = sym->formal; f; f = f->next) | |
1275 | { | |
1276 | if (f->sym == NULL) | |
1277 | { | |
1278 | has_alternate_returns = 1; | |
1279 | break; | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | if (has_alternate_returns) | |
1284 | type = integer_type_node; | |
1285 | else | |
1286 | type = void_type_node; | |
1287 | } | |
1288 | ||
1289 | result_decl = build_decl (RESULT_DECL, result_decl, type); | |
b785f485 RH |
1290 | DECL_ARTIFICIAL (result_decl) = 1; |
1291 | DECL_IGNORED_P (result_decl) = 1; | |
6de9cd9a DN |
1292 | DECL_CONTEXT (result_decl) = fndecl; |
1293 | DECL_RESULT (fndecl) = result_decl; | |
1294 | ||
1295 | /* Don't call layout_decl for a RESULT_DECL. | |
f8d0aee5 | 1296 | layout_decl (result_decl, 0); */ |
6de9cd9a DN |
1297 | |
1298 | /* If the return type is a pointer, avoid alias issues by setting | |
1299 | DECL_IS_MALLOC to nonzero. This means that the function should be | |
1300 | treated as if it were a malloc, meaning it returns a pointer that | |
1301 | is not an alias. */ | |
1302 | if (POINTER_TYPE_P (type)) | |
1303 | DECL_IS_MALLOC (fndecl) = 1; | |
1304 | ||
1305 | /* Set up all attributes for the function. */ | |
1306 | DECL_CONTEXT (fndecl) = current_function_decl; | |
1307 | DECL_EXTERNAL (fndecl) = 0; | |
1308 | ||
ae51017b | 1309 | /* This specifies if a function is globally visible, i.e. it is |
472ca416 | 1310 | the opposite of declaring static in C. */ |
3d79abbd PB |
1311 | if (DECL_CONTEXT (fndecl) == NULL_TREE |
1312 | && !sym->attr.entry_master) | |
6de9cd9a DN |
1313 | TREE_PUBLIC (fndecl) = 1; |
1314 | ||
1315 | /* TREE_STATIC means the function body is defined here. */ | |
1d754240 | 1316 | TREE_STATIC (fndecl) = 1; |
6de9cd9a | 1317 | |
f8d0aee5 | 1318 | /* Set attributes for PURE functions. A call to a PURE function in the |
6de9cd9a DN |
1319 | Fortran 95 sense is both pure and without side effects in the C |
1320 | sense. */ | |
1321 | if (attr.pure || attr.elemental) | |
1322 | { | |
b7e6a6b3 | 1323 | /* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments |
86bf520d | 1324 | including an alternate return. In that case it can also be |
1f2959f0 | 1325 | marked as PURE. See also in gfc_get_extern_function_decl(). */ |
a01db3bf | 1326 | if (attr.function && !gfc_return_by_reference (sym)) |
becfd6e5 | 1327 | DECL_PURE_P (fndecl) = 1; |
6de9cd9a DN |
1328 | TREE_SIDE_EFFECTS (fndecl) = 0; |
1329 | } | |
1330 | ||
ecf24057 | 1331 | /* For -fwhole-program to work well, the main program needs to have the |
f7a13f71 FXC |
1332 | "externally_visible" attribute. */ |
1333 | if (attr.is_main_program) | |
1334 | DECL_ATTRIBUTES (fndecl) | |
1335 | = tree_cons (get_identifier("externally_visible"), NULL_TREE, NULL_TREE); | |
1336 | ||
6de9cd9a DN |
1337 | /* Layout the function declaration and put it in the binding level |
1338 | of the current function. */ | |
1d754240 | 1339 | pushdecl (fndecl); |
3d79abbd PB |
1340 | |
1341 | sym->backend_decl = fndecl; | |
1342 | } | |
1343 | ||
1344 | ||
1345 | /* Create the DECL_ARGUMENTS for a procedure. */ | |
1346 | ||
1347 | static void | |
1348 | create_function_arglist (gfc_symbol * sym) | |
1349 | { | |
1350 | tree fndecl; | |
1351 | gfc_formal_arglist *f; | |
417ab240 JJ |
1352 | tree typelist, hidden_typelist; |
1353 | tree arglist, hidden_arglist; | |
3d79abbd PB |
1354 | tree type; |
1355 | tree parm; | |
1356 | ||
1357 | fndecl = sym->backend_decl; | |
1358 | ||
1d754240 PB |
1359 | /* Build formal argument list. Make sure that their TREE_CONTEXT is |
1360 | the new FUNCTION_DECL node. */ | |
1d754240 | 1361 | arglist = NULL_TREE; |
417ab240 | 1362 | hidden_arglist = NULL_TREE; |
1d754240 | 1363 | typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); |
3d79abbd PB |
1364 | |
1365 | if (sym->attr.entry_master) | |
1366 | { | |
1367 | type = TREE_VALUE (typelist); | |
1368 | parm = build_decl (PARM_DECL, get_identifier ("__entry"), type); | |
1369 | ||
1370 | DECL_CONTEXT (parm) = fndecl; | |
1371 | DECL_ARG_TYPE (parm) = type; | |
1372 | TREE_READONLY (parm) = 1; | |
faf28b3a | 1373 | gfc_finish_decl (parm); |
3e978d30 | 1374 | DECL_ARTIFICIAL (parm) = 1; |
3d79abbd PB |
1375 | |
1376 | arglist = chainon (arglist, parm); | |
1377 | typelist = TREE_CHAIN (typelist); | |
1378 | } | |
1379 | ||
1d754240 | 1380 | if (gfc_return_by_reference (sym)) |
6de9cd9a | 1381 | { |
417ab240 | 1382 | tree type = TREE_VALUE (typelist), length = NULL; |
6de9cd9a | 1383 | |
1d754240 PB |
1384 | if (sym->ts.type == BT_CHARACTER) |
1385 | { | |
1d754240 | 1386 | /* Length of character result. */ |
417ab240 JJ |
1387 | tree len_type = TREE_VALUE (TREE_CHAIN (typelist)); |
1388 | gcc_assert (len_type == gfc_charlen_type_node); | |
6de9cd9a | 1389 | |
1d754240 PB |
1390 | length = build_decl (PARM_DECL, |
1391 | get_identifier (".__result"), | |
417ab240 | 1392 | len_type); |
1d754240 PB |
1393 | if (!sym->ts.cl->length) |
1394 | { | |
1395 | sym->ts.cl->backend_decl = length; | |
1396 | TREE_USED (length) = 1; | |
6de9cd9a | 1397 | } |
6e45f57b | 1398 | gcc_assert (TREE_CODE (length) == PARM_DECL); |
1d754240 | 1399 | DECL_CONTEXT (length) = fndecl; |
417ab240 | 1400 | DECL_ARG_TYPE (length) = len_type; |
1d754240 | 1401 | TREE_READONLY (length) = 1; |
ca0e9281 | 1402 | DECL_ARTIFICIAL (length) = 1; |
faf28b3a | 1403 | gfc_finish_decl (length); |
417ab240 JJ |
1404 | if (sym->ts.cl->backend_decl == NULL |
1405 | || sym->ts.cl->backend_decl == length) | |
1406 | { | |
1407 | gfc_symbol *arg; | |
1408 | tree backend_decl; | |
6de9cd9a | 1409 | |
417ab240 JJ |
1410 | if (sym->ts.cl->backend_decl == NULL) |
1411 | { | |
1412 | tree len = build_decl (VAR_DECL, | |
1413 | get_identifier ("..__result"), | |
1414 | gfc_charlen_type_node); | |
1415 | DECL_ARTIFICIAL (len) = 1; | |
1416 | TREE_USED (len) = 1; | |
1417 | sym->ts.cl->backend_decl = len; | |
1418 | } | |
6de9cd9a | 1419 | |
417ab240 JJ |
1420 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ |
1421 | arg = sym->result ? sym->result : sym; | |
1422 | backend_decl = arg->backend_decl; | |
1423 | /* Temporary clear it, so that gfc_sym_type creates complete | |
1424 | type. */ | |
1425 | arg->backend_decl = NULL; | |
1426 | type = gfc_sym_type (arg); | |
1427 | arg->backend_decl = backend_decl; | |
1428 | type = build_reference_type (type); | |
1429 | } | |
1430 | } | |
6de9cd9a | 1431 | |
417ab240 | 1432 | parm = build_decl (PARM_DECL, get_identifier ("__result"), type); |
6de9cd9a | 1433 | |
417ab240 JJ |
1434 | DECL_CONTEXT (parm) = fndecl; |
1435 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
1436 | TREE_READONLY (parm) = 1; | |
1437 | DECL_ARTIFICIAL (parm) = 1; | |
faf28b3a | 1438 | gfc_finish_decl (parm); |
6de9cd9a | 1439 | |
417ab240 JJ |
1440 | arglist = chainon (arglist, parm); |
1441 | typelist = TREE_CHAIN (typelist); | |
6de9cd9a | 1442 | |
417ab240 JJ |
1443 | if (sym->ts.type == BT_CHARACTER) |
1444 | { | |
1445 | gfc_allocate_lang_decl (parm); | |
1446 | arglist = chainon (arglist, length); | |
1d754240 PB |
1447 | typelist = TREE_CHAIN (typelist); |
1448 | } | |
1449 | } | |
6de9cd9a | 1450 | |
417ab240 JJ |
1451 | hidden_typelist = typelist; |
1452 | for (f = sym->formal; f; f = f->next) | |
1453 | if (f->sym != NULL) /* Ignore alternate returns. */ | |
1454 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
1455 | ||
1d754240 PB |
1456 | for (f = sym->formal; f; f = f->next) |
1457 | { | |
1458 | char name[GFC_MAX_SYMBOL_LEN + 2]; | |
417ab240 | 1459 | |
1d754240 PB |
1460 | /* Ignore alternate returns. */ |
1461 | if (f->sym == NULL) | |
1462 | continue; | |
6de9cd9a | 1463 | |
1d754240 | 1464 | type = TREE_VALUE (typelist); |
6de9cd9a | 1465 | |
417ab240 JJ |
1466 | if (f->sym->ts.type == BT_CHARACTER) |
1467 | { | |
1468 | tree len_type = TREE_VALUE (hidden_typelist); | |
1469 | tree length = NULL_TREE; | |
1470 | gcc_assert (len_type == gfc_charlen_type_node); | |
1471 | ||
1472 | strcpy (&name[1], f->sym->name); | |
1473 | name[0] = '_'; | |
1474 | length = build_decl (PARM_DECL, get_identifier (name), len_type); | |
6de9cd9a | 1475 | |
417ab240 JJ |
1476 | hidden_arglist = chainon (hidden_arglist, length); |
1477 | DECL_CONTEXT (length) = fndecl; | |
1478 | DECL_ARTIFICIAL (length) = 1; | |
1479 | DECL_ARG_TYPE (length) = len_type; | |
1480 | TREE_READONLY (length) = 1; | |
faf28b3a | 1481 | gfc_finish_decl (length); |
6de9cd9a | 1482 | |
417ab240 | 1483 | /* TODO: Check string lengths when -fbounds-check. */ |
6de9cd9a | 1484 | |
417ab240 JJ |
1485 | /* Use the passed value for assumed length variables. */ |
1486 | if (!f->sym->ts.cl->length) | |
6de9cd9a | 1487 | { |
417ab240 | 1488 | TREE_USED (length) = 1; |
9b21a380 JJ |
1489 | gcc_assert (!f->sym->ts.cl->backend_decl); |
1490 | f->sym->ts.cl->backend_decl = length; | |
417ab240 JJ |
1491 | } |
1492 | ||
1493 | hidden_typelist = TREE_CHAIN (hidden_typelist); | |
1494 | ||
1495 | if (f->sym->ts.cl->backend_decl == NULL | |
1496 | || f->sym->ts.cl->backend_decl == length) | |
1497 | { | |
1498 | if (f->sym->ts.cl->backend_decl == NULL) | |
1499 | gfc_create_string_length (f->sym); | |
1500 | ||
1501 | /* Make sure PARM_DECL type doesn't point to incomplete type. */ | |
1502 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
1503 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
1504 | else | |
1505 | type = gfc_sym_type (f->sym); | |
6de9cd9a | 1506 | } |
6de9cd9a DN |
1507 | } |
1508 | ||
417ab240 JJ |
1509 | /* For non-constant length array arguments, make sure they use |
1510 | a different type node from TYPE_ARG_TYPES type. */ | |
1511 | if (f->sym->attr.dimension | |
1512 | && type == TREE_VALUE (typelist) | |
1513 | && TREE_CODE (type) == POINTER_TYPE | |
1514 | && GFC_ARRAY_TYPE_P (type) | |
1515 | && f->sym->as->type != AS_ASSUMED_SIZE | |
1516 | && ! COMPLETE_TYPE_P (TREE_TYPE (type))) | |
1517 | { | |
1518 | if (f->sym->attr.flavor == FL_PROCEDURE) | |
1519 | type = build_pointer_type (gfc_get_function_type (f->sym)); | |
1520 | else | |
1521 | type = gfc_sym_type (f->sym); | |
1522 | } | |
1523 | ||
1524 | /* Build a the argument declaration. */ | |
1525 | parm = build_decl (PARM_DECL, gfc_sym_identifier (f->sym), type); | |
1526 | ||
1527 | /* Fill in arg stuff. */ | |
1528 | DECL_CONTEXT (parm) = fndecl; | |
1529 | DECL_ARG_TYPE (parm) = TREE_VALUE (typelist); | |
1530 | /* All implementation args are read-only. */ | |
1531 | TREE_READONLY (parm) = 1; | |
1532 | ||
faf28b3a | 1533 | gfc_finish_decl (parm); |
417ab240 JJ |
1534 | |
1535 | f->sym->backend_decl = parm; | |
1536 | ||
1537 | arglist = chainon (arglist, parm); | |
1d754240 | 1538 | typelist = TREE_CHAIN (typelist); |
6de9cd9a | 1539 | } |
1d754240 | 1540 | |
7861a5ce TB |
1541 | /* Add the hidden string length parameters, unless the procedure |
1542 | is bind(C). */ | |
1543 | if (!sym->attr.is_bind_c) | |
1544 | arglist = chainon (arglist, hidden_arglist); | |
417ab240 | 1545 | |
884d2e6b SE |
1546 | gcc_assert (hidden_typelist == NULL_TREE |
1547 | || TREE_VALUE (hidden_typelist) == void_type_node); | |
1d754240 | 1548 | DECL_ARGUMENTS (fndecl) = arglist; |
3d79abbd | 1549 | } |
1d754240 | 1550 | |
3d79abbd PB |
1551 | /* Convert FNDECL's code to GIMPLE and handle any nested functions. */ |
1552 | ||
1553 | static void | |
1554 | gfc_gimplify_function (tree fndecl) | |
1555 | { | |
1556 | struct cgraph_node *cgn; | |
1557 | ||
1558 | gimplify_function_tree (fndecl); | |
1559 | dump_function (TDI_generic, fndecl); | |
1560 | ||
6c7a4dfd JJ |
1561 | /* Generate errors for structured block violations. */ |
1562 | /* ??? Could be done as part of resolve_labels. */ | |
1563 | if (flag_openmp) | |
1564 | diagnose_omp_structured_block_errors (fndecl); | |
1565 | ||
3d79abbd PB |
1566 | /* Convert all nested functions to GIMPLE now. We do things in this order |
1567 | so that items like VLA sizes are expanded properly in the context of the | |
1568 | correct function. */ | |
1569 | cgn = cgraph_node (fndecl); | |
1570 | for (cgn = cgn->nested; cgn; cgn = cgn->next_nested) | |
1571 | gfc_gimplify_function (cgn->decl); | |
1572 | } | |
1573 | ||
1574 | ||
1575 | /* Do the setup necessary before generating the body of a function. */ | |
1576 | ||
1577 | static void | |
1578 | trans_function_start (gfc_symbol * sym) | |
1579 | { | |
1580 | tree fndecl; | |
1581 | ||
1582 | fndecl = sym->backend_decl; | |
1583 | ||
f8d0aee5 | 1584 | /* Let GCC know the current scope is this function. */ |
3d79abbd PB |
1585 | current_function_decl = fndecl; |
1586 | ||
f8d0aee5 | 1587 | /* Let the world know what we're about to do. */ |
3d79abbd PB |
1588 | announce_function (fndecl); |
1589 | ||
1590 | if (DECL_CONTEXT (fndecl) == NULL_TREE) | |
1591 | { | |
f8d0aee5 | 1592 | /* Create RTL for function declaration. */ |
3d79abbd PB |
1593 | rest_of_decl_compilation (fndecl, 1, 0); |
1594 | } | |
1595 | ||
f8d0aee5 | 1596 | /* Create RTL for function definition. */ |
3d79abbd PB |
1597 | make_decl_rtl (fndecl); |
1598 | ||
3d79abbd PB |
1599 | init_function_start (fndecl); |
1600 | ||
1601 | /* Even though we're inside a function body, we still don't want to | |
1602 | call expand_expr to calculate the size of a variable-sized array. | |
1603 | We haven't necessarily assigned RTL to all variables yet, so it's | |
1604 | not safe to try to expand expressions involving them. */ | |
e3b5732b | 1605 | cfun->dont_save_pending_sizes_p = 1; |
3d79abbd | 1606 | |
f8d0aee5 | 1607 | /* function.c requires a push at the start of the function. */ |
3d79abbd PB |
1608 | pushlevel (0); |
1609 | } | |
1610 | ||
1611 | /* Create thunks for alternate entry points. */ | |
1612 | ||
1613 | static void | |
1614 | build_entry_thunks (gfc_namespace * ns) | |
1615 | { | |
1616 | gfc_formal_arglist *formal; | |
1617 | gfc_formal_arglist *thunk_formal; | |
1618 | gfc_entry_list *el; | |
1619 | gfc_symbol *thunk_sym; | |
1620 | stmtblock_t body; | |
1621 | tree thunk_fndecl; | |
1622 | tree args; | |
1623 | tree string_args; | |
1624 | tree tmp; | |
c8cc8542 | 1625 | locus old_loc; |
3d79abbd PB |
1626 | |
1627 | /* This should always be a toplevel function. */ | |
6e45f57b | 1628 | gcc_assert (current_function_decl == NULL_TREE); |
3d79abbd | 1629 | |
c8cc8542 | 1630 | gfc_get_backend_locus (&old_loc); |
3d79abbd PB |
1631 | for (el = ns->entries; el; el = el->next) |
1632 | { | |
1633 | thunk_sym = el->sym; | |
1634 | ||
1635 | build_function_decl (thunk_sym); | |
1636 | create_function_arglist (thunk_sym); | |
1637 | ||
1638 | trans_function_start (thunk_sym); | |
1639 | ||
1640 | thunk_fndecl = thunk_sym->backend_decl; | |
1641 | ||
1642 | gfc_start_block (&body); | |
1643 | ||
f8d0aee5 | 1644 | /* Pass extra parameter identifying this entry point. */ |
7d60be94 | 1645 | tmp = build_int_cst (gfc_array_index_type, el->id); |
3d79abbd PB |
1646 | args = tree_cons (NULL_TREE, tmp, NULL_TREE); |
1647 | string_args = NULL_TREE; | |
1648 | ||
d198b59a JJ |
1649 | if (thunk_sym->attr.function) |
1650 | { | |
1651 | if (gfc_return_by_reference (ns->proc_name)) | |
1652 | { | |
1653 | tree ref = DECL_ARGUMENTS (current_function_decl); | |
1654 | args = tree_cons (NULL_TREE, ref, args); | |
1655 | if (ns->proc_name->ts.type == BT_CHARACTER) | |
1656 | args = tree_cons (NULL_TREE, TREE_CHAIN (ref), | |
1657 | args); | |
1658 | } | |
1659 | } | |
1660 | ||
3d79abbd PB |
1661 | for (formal = ns->proc_name->formal; formal; formal = formal->next) |
1662 | { | |
d198b59a JJ |
1663 | /* Ignore alternate returns. */ |
1664 | if (formal->sym == NULL) | |
1665 | continue; | |
1666 | ||
3d79abbd PB |
1667 | /* We don't have a clever way of identifying arguments, so resort to |
1668 | a brute-force search. */ | |
1669 | for (thunk_formal = thunk_sym->formal; | |
1670 | thunk_formal; | |
1671 | thunk_formal = thunk_formal->next) | |
1672 | { | |
1673 | if (thunk_formal->sym == formal->sym) | |
1674 | break; | |
1675 | } | |
1676 | ||
1677 | if (thunk_formal) | |
1678 | { | |
1679 | /* Pass the argument. */ | |
3e978d30 | 1680 | DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1; |
3d79abbd PB |
1681 | args = tree_cons (NULL_TREE, thunk_formal->sym->backend_decl, |
1682 | args); | |
1683 | if (formal->sym->ts.type == BT_CHARACTER) | |
1684 | { | |
1685 | tmp = thunk_formal->sym->ts.cl->backend_decl; | |
1686 | string_args = tree_cons (NULL_TREE, tmp, string_args); | |
1687 | } | |
1688 | } | |
1689 | else | |
1690 | { | |
1691 | /* Pass NULL for a missing argument. */ | |
1692 | args = tree_cons (NULL_TREE, null_pointer_node, args); | |
1693 | if (formal->sym->ts.type == BT_CHARACTER) | |
1694 | { | |
c3238e32 | 1695 | tmp = build_int_cst (gfc_charlen_type_node, 0); |
3d79abbd PB |
1696 | string_args = tree_cons (NULL_TREE, tmp, string_args); |
1697 | } | |
1698 | } | |
1699 | } | |
1700 | ||
1701 | /* Call the master function. */ | |
1702 | args = nreverse (args); | |
1703 | args = chainon (args, nreverse (string_args)); | |
1704 | tmp = ns->proc_name->backend_decl; | |
3380b802 | 1705 | tmp = build_function_call_expr (tmp, args); |
d198b59a JJ |
1706 | if (ns->proc_name->attr.mixed_entry_master) |
1707 | { | |
1708 | tree union_decl, field; | |
1709 | tree master_type = TREE_TYPE (ns->proc_name->backend_decl); | |
1710 | ||
1711 | union_decl = build_decl (VAR_DECL, get_identifier ("__result"), | |
1712 | TREE_TYPE (master_type)); | |
1713 | DECL_ARTIFICIAL (union_decl) = 1; | |
1714 | DECL_EXTERNAL (union_decl) = 0; | |
1715 | TREE_PUBLIC (union_decl) = 0; | |
1716 | TREE_USED (union_decl) = 1; | |
1717 | layout_decl (union_decl, 0); | |
1718 | pushdecl (union_decl); | |
1719 | ||
1720 | DECL_CONTEXT (union_decl) = current_function_decl; | |
44855d8c TS |
1721 | tmp = fold_build2 (MODIFY_EXPR, TREE_TYPE (union_decl), |
1722 | union_decl, tmp); | |
d198b59a JJ |
1723 | gfc_add_expr_to_block (&body, tmp); |
1724 | ||
1725 | for (field = TYPE_FIELDS (TREE_TYPE (union_decl)); | |
1726 | field; field = TREE_CHAIN (field)) | |
1727 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), | |
1728 | thunk_sym->result->name) == 0) | |
1729 | break; | |
1730 | gcc_assert (field != NULL_TREE); | |
44855d8c TS |
1731 | tmp = fold_build3 (COMPONENT_REF, TREE_TYPE (field), |
1732 | union_decl, field, NULL_TREE); | |
1733 | tmp = fold_build2 (MODIFY_EXPR, | |
1734 | TREE_TYPE (DECL_RESULT (current_function_decl)), | |
1735 | DECL_RESULT (current_function_decl), tmp); | |
d198b59a JJ |
1736 | tmp = build1_v (RETURN_EXPR, tmp); |
1737 | } | |
1738 | else if (TREE_TYPE (DECL_RESULT (current_function_decl)) | |
1739 | != void_type_node) | |
1740 | { | |
44855d8c TS |
1741 | tmp = fold_build2 (MODIFY_EXPR, |
1742 | TREE_TYPE (DECL_RESULT (current_function_decl)), | |
1743 | DECL_RESULT (current_function_decl), tmp); | |
d198b59a JJ |
1744 | tmp = build1_v (RETURN_EXPR, tmp); |
1745 | } | |
3d79abbd PB |
1746 | gfc_add_expr_to_block (&body, tmp); |
1747 | ||
1748 | /* Finish off this function and send it for code generation. */ | |
1749 | DECL_SAVED_TREE (thunk_fndecl) = gfc_finish_block (&body); | |
1750 | poplevel (1, 0, 1); | |
1751 | BLOCK_SUPERCONTEXT (DECL_INITIAL (thunk_fndecl)) = thunk_fndecl; | |
1752 | ||
1753 | /* Output the GENERIC tree. */ | |
1754 | dump_function (TDI_original, thunk_fndecl); | |
1755 | ||
1756 | /* Store the end of the function, so that we get good line number | |
1757 | info for the epilogue. */ | |
1758 | cfun->function_end_locus = input_location; | |
1759 | ||
1760 | /* We're leaving the context of this function, so zap cfun. | |
1761 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
1762 | tree_rest_of_compilation. */ | |
db2960f4 | 1763 | set_cfun (NULL); |
3d79abbd PB |
1764 | |
1765 | current_function_decl = NULL_TREE; | |
1766 | ||
1767 | gfc_gimplify_function (thunk_fndecl); | |
8f235343 | 1768 | cgraph_finalize_function (thunk_fndecl, false); |
3d79abbd PB |
1769 | |
1770 | /* We share the symbols in the formal argument list with other entry | |
1771 | points and the master function. Clear them so that they are | |
1772 | recreated for each function. */ | |
1773 | for (formal = thunk_sym->formal; formal; formal = formal->next) | |
d198b59a JJ |
1774 | if (formal->sym != NULL) /* Ignore alternate returns. */ |
1775 | { | |
1776 | formal->sym->backend_decl = NULL_TREE; | |
1777 | if (formal->sym->ts.type == BT_CHARACTER) | |
1778 | formal->sym->ts.cl->backend_decl = NULL_TREE; | |
1779 | } | |
1780 | ||
1781 | if (thunk_sym->attr.function) | |
3d79abbd | 1782 | { |
d198b59a JJ |
1783 | if (thunk_sym->ts.type == BT_CHARACTER) |
1784 | thunk_sym->ts.cl->backend_decl = NULL_TREE; | |
1785 | if (thunk_sym->result->ts.type == BT_CHARACTER) | |
1786 | thunk_sym->result->ts.cl->backend_decl = NULL_TREE; | |
3d79abbd PB |
1787 | } |
1788 | } | |
c8cc8542 PB |
1789 | |
1790 | gfc_set_backend_locus (&old_loc); | |
3d79abbd PB |
1791 | } |
1792 | ||
1793 | ||
1794 | /* Create a decl for a function, and create any thunks for alternate entry | |
1795 | points. */ | |
1796 | ||
1797 | void | |
1798 | gfc_create_function_decl (gfc_namespace * ns) | |
1799 | { | |
1800 | /* Create a declaration for the master function. */ | |
1801 | build_function_decl (ns->proc_name); | |
1802 | ||
f8d0aee5 | 1803 | /* Compile the entry thunks. */ |
3d79abbd PB |
1804 | if (ns->entries) |
1805 | build_entry_thunks (ns); | |
1806 | ||
1807 | /* Now create the read argument list. */ | |
1808 | create_function_arglist (ns->proc_name); | |
1809 | } | |
1810 | ||
5f20c93a | 1811 | /* Return the decl used to hold the function return value. If |
da4c6ed8 | 1812 | parent_flag is set, the context is the parent_scope. */ |
6de9cd9a DN |
1813 | |
1814 | tree | |
5f20c93a | 1815 | gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag) |
6de9cd9a | 1816 | { |
5f20c93a PT |
1817 | tree decl; |
1818 | tree length; | |
1819 | tree this_fake_result_decl; | |
1820 | tree this_function_decl; | |
6de9cd9a DN |
1821 | |
1822 | char name[GFC_MAX_SYMBOL_LEN + 10]; | |
1823 | ||
5f20c93a PT |
1824 | if (parent_flag) |
1825 | { | |
1826 | this_fake_result_decl = parent_fake_result_decl; | |
1827 | this_function_decl = DECL_CONTEXT (current_function_decl); | |
1828 | } | |
1829 | else | |
1830 | { | |
1831 | this_fake_result_decl = current_fake_result_decl; | |
1832 | this_function_decl = current_function_decl; | |
1833 | } | |
1834 | ||
d198b59a | 1835 | if (sym |
5f20c93a | 1836 | && sym->ns->proc_name->backend_decl == this_function_decl |
417ab240 | 1837 | && sym->ns->proc_name->attr.entry_master |
d198b59a JJ |
1838 | && sym != sym->ns->proc_name) |
1839 | { | |
417ab240 | 1840 | tree t = NULL, var; |
5f20c93a PT |
1841 | if (this_fake_result_decl != NULL) |
1842 | for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t)) | |
417ab240 JJ |
1843 | if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0) |
1844 | break; | |
1845 | if (t) | |
1846 | return TREE_VALUE (t); | |
5f20c93a PT |
1847 | decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag); |
1848 | ||
1849 | if (parent_flag) | |
1850 | this_fake_result_decl = parent_fake_result_decl; | |
1851 | else | |
1852 | this_fake_result_decl = current_fake_result_decl; | |
1853 | ||
417ab240 | 1854 | if (decl && sym->ns->proc_name->attr.mixed_entry_master) |
d198b59a JJ |
1855 | { |
1856 | tree field; | |
1857 | ||
1858 | for (field = TYPE_FIELDS (TREE_TYPE (decl)); | |
1859 | field; field = TREE_CHAIN (field)) | |
1860 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)), | |
1861 | sym->name) == 0) | |
1862 | break; | |
1863 | ||
1864 | gcc_assert (field != NULL_TREE); | |
44855d8c TS |
1865 | decl = fold_build3 (COMPONENT_REF, TREE_TYPE (field), |
1866 | decl, field, NULL_TREE); | |
d198b59a | 1867 | } |
5f20c93a PT |
1868 | |
1869 | var = create_tmp_var_raw (TREE_TYPE (decl), sym->name); | |
1870 | if (parent_flag) | |
1871 | gfc_add_decl_to_parent_function (var); | |
1872 | else | |
1873 | gfc_add_decl_to_function (var); | |
1874 | ||
417ab240 JJ |
1875 | SET_DECL_VALUE_EXPR (var, decl); |
1876 | DECL_HAS_VALUE_EXPR_P (var) = 1; | |
4b8ae4db | 1877 | GFC_DECL_RESULT (var) = 1; |
5f20c93a PT |
1878 | |
1879 | TREE_CHAIN (this_fake_result_decl) | |
1880 | = tree_cons (get_identifier (sym->name), var, | |
1881 | TREE_CHAIN (this_fake_result_decl)); | |
417ab240 | 1882 | return var; |
d198b59a JJ |
1883 | } |
1884 | ||
5f20c93a PT |
1885 | if (this_fake_result_decl != NULL_TREE) |
1886 | return TREE_VALUE (this_fake_result_decl); | |
6de9cd9a DN |
1887 | |
1888 | /* Only when gfc_get_fake_result_decl is called by gfc_trans_return, | |
1889 | sym is NULL. */ | |
1890 | if (!sym) | |
1891 | return NULL_TREE; | |
1892 | ||
417ab240 | 1893 | if (sym->ts.type == BT_CHARACTER) |
6de9cd9a | 1894 | { |
417ab240 JJ |
1895 | if (sym->ts.cl->backend_decl == NULL_TREE) |
1896 | length = gfc_create_string_length (sym); | |
1897 | else | |
1898 | length = sym->ts.cl->backend_decl; | |
1899 | if (TREE_CODE (length) == VAR_DECL | |
1900 | && DECL_CONTEXT (length) == NULL_TREE) | |
a7d6b765 | 1901 | gfc_add_decl_to_function (length); |
6de9cd9a DN |
1902 | } |
1903 | ||
1904 | if (gfc_return_by_reference (sym)) | |
1905 | { | |
5f20c93a | 1906 | decl = DECL_ARGUMENTS (this_function_decl); |
d198b59a | 1907 | |
5f20c93a | 1908 | if (sym->ns->proc_name->backend_decl == this_function_decl |
d198b59a JJ |
1909 | && sym->ns->proc_name->attr.entry_master) |
1910 | decl = TREE_CHAIN (decl); | |
6de9cd9a DN |
1911 | |
1912 | TREE_USED (decl) = 1; | |
1913 | if (sym->as) | |
1914 | decl = gfc_build_dummy_array_decl (sym, decl); | |
1915 | } | |
1916 | else | |
1917 | { | |
1918 | sprintf (name, "__result_%.20s", | |
5f20c93a | 1919 | IDENTIFIER_POINTER (DECL_NAME (this_function_decl))); |
6de9cd9a | 1920 | |
da4c6ed8 TS |
1921 | if (!sym->attr.mixed_entry_master && sym->attr.function) |
1922 | decl = build_decl (VAR_DECL, get_identifier (name), | |
1923 | gfc_sym_type (sym)); | |
1924 | else | |
1925 | decl = build_decl (VAR_DECL, get_identifier (name), | |
1926 | TREE_TYPE (TREE_TYPE (this_function_decl))); | |
6de9cd9a DN |
1927 | DECL_ARTIFICIAL (decl) = 1; |
1928 | DECL_EXTERNAL (decl) = 0; | |
1929 | TREE_PUBLIC (decl) = 0; | |
1930 | TREE_USED (decl) = 1; | |
6c7a4dfd | 1931 | GFC_DECL_RESULT (decl) = 1; |
c55cebda | 1932 | TREE_ADDRESSABLE (decl) = 1; |
6de9cd9a DN |
1933 | |
1934 | layout_decl (decl, 0); | |
1935 | ||
5f20c93a PT |
1936 | if (parent_flag) |
1937 | gfc_add_decl_to_parent_function (decl); | |
1938 | else | |
1939 | gfc_add_decl_to_function (decl); | |
6de9cd9a DN |
1940 | } |
1941 | ||
5f20c93a PT |
1942 | if (parent_flag) |
1943 | parent_fake_result_decl = build_tree_list (NULL, decl); | |
1944 | else | |
1945 | current_fake_result_decl = build_tree_list (NULL, decl); | |
6de9cd9a DN |
1946 | |
1947 | return decl; | |
1948 | } | |
1949 | ||
1950 | ||
1951 | /* Builds a function decl. The remaining parameters are the types of the | |
1952 | function arguments. Negative nargs indicates a varargs function. */ | |
1953 | ||
1954 | tree | |
1955 | gfc_build_library_function_decl (tree name, tree rettype, int nargs, ...) | |
1956 | { | |
1957 | tree arglist; | |
1958 | tree argtype; | |
1959 | tree fntype; | |
1960 | tree fndecl; | |
1961 | va_list p; | |
1962 | int n; | |
1963 | ||
1964 | /* Library functions must be declared with global scope. */ | |
6e45f57b | 1965 | gcc_assert (current_function_decl == NULL_TREE); |
6de9cd9a DN |
1966 | |
1967 | va_start (p, nargs); | |
1968 | ||
1969 | ||
1970 | /* Create a list of the argument types. */ | |
1971 | for (arglist = NULL_TREE, n = abs (nargs); n > 0; n--) | |
1972 | { | |
1973 | argtype = va_arg (p, tree); | |
1974 | arglist = gfc_chainon_list (arglist, argtype); | |
1975 | } | |
1976 | ||
1977 | if (nargs >= 0) | |
1978 | { | |
1979 | /* Terminate the list. */ | |
1980 | arglist = gfc_chainon_list (arglist, void_type_node); | |
1981 | } | |
1982 | ||
1983 | /* Build the function type and decl. */ | |
1984 | fntype = build_function_type (rettype, arglist); | |
1985 | fndecl = build_decl (FUNCTION_DECL, name, fntype); | |
1986 | ||
1987 | /* Mark this decl as external. */ | |
1988 | DECL_EXTERNAL (fndecl) = 1; | |
1989 | TREE_PUBLIC (fndecl) = 1; | |
1990 | ||
1991 | va_end (p); | |
1992 | ||
1993 | pushdecl (fndecl); | |
1994 | ||
0e6df31e | 1995 | rest_of_decl_compilation (fndecl, 1, 0); |
6de9cd9a DN |
1996 | |
1997 | return fndecl; | |
1998 | } | |
1999 | ||
2000 | static void | |
2001 | gfc_build_intrinsic_function_decls (void) | |
2002 | { | |
e2cad04b RH |
2003 | tree gfc_int4_type_node = gfc_get_int_type (4); |
2004 | tree gfc_int8_type_node = gfc_get_int_type (8); | |
644cb69f | 2005 | tree gfc_int16_type_node = gfc_get_int_type (16); |
e2cad04b | 2006 | tree gfc_logical4_type_node = gfc_get_logical_type (4); |
e2cad04b | 2007 | |
6de9cd9a | 2008 | /* String functions. */ |
6de9cd9a DN |
2009 | gfor_fndecl_compare_string = |
2010 | gfc_build_library_function_decl (get_identifier (PREFIX("compare_string")), | |
c9ff1de3 | 2011 | integer_type_node, 4, |
d7177ab2 TS |
2012 | gfc_charlen_type_node, pchar_type_node, |
2013 | gfc_charlen_type_node, pchar_type_node); | |
6de9cd9a DN |
2014 | |
2015 | gfor_fndecl_concat_string = | |
2016 | gfc_build_library_function_decl (get_identifier (PREFIX("concat_string")), | |
2017 | void_type_node, | |
2018 | 6, | |
d7177ab2 TS |
2019 | gfc_charlen_type_node, pchar_type_node, |
2020 | gfc_charlen_type_node, pchar_type_node, | |
2021 | gfc_charlen_type_node, pchar_type_node); | |
6de9cd9a DN |
2022 | |
2023 | gfor_fndecl_string_len_trim = | |
2024 | gfc_build_library_function_decl (get_identifier (PREFIX("string_len_trim")), | |
2025 | gfc_int4_type_node, | |
d7177ab2 | 2026 | 2, gfc_charlen_type_node, |
6de9cd9a DN |
2027 | pchar_type_node); |
2028 | ||
2029 | gfor_fndecl_string_index = | |
2030 | gfc_build_library_function_decl (get_identifier (PREFIX("string_index")), | |
2031 | gfc_int4_type_node, | |
d7177ab2 TS |
2032 | 5, gfc_charlen_type_node, pchar_type_node, |
2033 | gfc_charlen_type_node, pchar_type_node, | |
6de9cd9a DN |
2034 | gfc_logical4_type_node); |
2035 | ||
2036 | gfor_fndecl_string_scan = | |
2037 | gfc_build_library_function_decl (get_identifier (PREFIX("string_scan")), | |
2038 | gfc_int4_type_node, | |
d7177ab2 TS |
2039 | 5, gfc_charlen_type_node, pchar_type_node, |
2040 | gfc_charlen_type_node, pchar_type_node, | |
6de9cd9a DN |
2041 | gfc_logical4_type_node); |
2042 | ||
2043 | gfor_fndecl_string_verify = | |
2044 | gfc_build_library_function_decl (get_identifier (PREFIX("string_verify")), | |
2045 | gfc_int4_type_node, | |
d7177ab2 TS |
2046 | 5, gfc_charlen_type_node, pchar_type_node, |
2047 | gfc_charlen_type_node, pchar_type_node, | |
6de9cd9a DN |
2048 | gfc_logical4_type_node); |
2049 | ||
7389bce6 | 2050 | gfor_fndecl_string_trim = |
6de9cd9a DN |
2051 | gfc_build_library_function_decl (get_identifier (PREFIX("string_trim")), |
2052 | void_type_node, | |
2053 | 4, | |
d7177ab2 | 2054 | build_pointer_type (gfc_charlen_type_node), |
6de9cd9a | 2055 | ppvoid_type_node, |
d7177ab2 | 2056 | gfc_charlen_type_node, |
6de9cd9a DN |
2057 | pchar_type_node); |
2058 | ||
2263c775 FXC |
2059 | gfor_fndecl_string_minmax = |
2060 | gfc_build_library_function_decl (get_identifier (PREFIX("string_minmax")), | |
2061 | void_type_node, -4, | |
2062 | build_pointer_type (gfc_charlen_type_node), | |
2063 | ppvoid_type_node, integer_type_node, | |
2064 | integer_type_node); | |
2065 | ||
25fc05eb FXC |
2066 | gfor_fndecl_ttynam = |
2067 | gfc_build_library_function_decl (get_identifier (PREFIX("ttynam")), | |
2068 | void_type_node, | |
2069 | 3, | |
2070 | pchar_type_node, | |
2071 | gfc_charlen_type_node, | |
dd52ecb0 | 2072 | integer_type_node); |
25fc05eb | 2073 | |
35059811 FXC |
2074 | gfor_fndecl_fdate = |
2075 | gfc_build_library_function_decl (get_identifier (PREFIX("fdate")), | |
2076 | void_type_node, | |
2077 | 2, | |
2078 | pchar_type_node, | |
2079 | gfc_charlen_type_node); | |
2080 | ||
2081 | gfor_fndecl_ctime = | |
2082 | gfc_build_library_function_decl (get_identifier (PREFIX("ctime")), | |
2083 | void_type_node, | |
2084 | 3, | |
2085 | pchar_type_node, | |
2086 | gfc_charlen_type_node, | |
2087 | gfc_int8_type_node); | |
2088 | ||
6de9cd9a DN |
2089 | gfor_fndecl_adjustl = |
2090 | gfc_build_library_function_decl (get_identifier (PREFIX("adjustl")), | |
2091 | void_type_node, | |
2092 | 3, | |
2093 | pchar_type_node, | |
d7177ab2 | 2094 | gfc_charlen_type_node, pchar_type_node); |
6de9cd9a DN |
2095 | |
2096 | gfor_fndecl_adjustr = | |
2097 | gfc_build_library_function_decl (get_identifier (PREFIX("adjustr")), | |
2098 | void_type_node, | |
2099 | 3, | |
2100 | pchar_type_node, | |
d7177ab2 | 2101 | gfc_charlen_type_node, pchar_type_node); |
6de9cd9a | 2102 | |
a39fafac FXC |
2103 | gfor_fndecl_sc_kind = |
2104 | gfc_build_library_function_decl (get_identifier | |
2105 | (PREFIX("selected_char_kind")), | |
2106 | gfc_int4_type_node, 2, | |
2107 | gfc_charlen_type_node, pchar_type_node); | |
2108 | ||
6de9cd9a | 2109 | gfor_fndecl_si_kind = |
e6472bce FXC |
2110 | gfc_build_library_function_decl (get_identifier |
2111 | (PREFIX("selected_int_kind")), | |
a39fafac | 2112 | gfc_int4_type_node, 1, pvoid_type_node); |
6de9cd9a DN |
2113 | |
2114 | gfor_fndecl_sr_kind = | |
7389bce6 | 2115 | gfc_build_library_function_decl (get_identifier |
e6472bce | 2116 | (PREFIX("selected_real_kind")), |
a39fafac FXC |
2117 | gfc_int4_type_node, 2, |
2118 | pvoid_type_node, pvoid_type_node); | |
6de9cd9a | 2119 | |
6de9cd9a | 2120 | /* Power functions. */ |
5b200ac2 | 2121 | { |
644cb69f FXC |
2122 | tree ctype, rtype, itype, jtype; |
2123 | int rkind, ikind, jkind; | |
2124 | #define NIKINDS 3 | |
2125 | #define NRKINDS 4 | |
2126 | static int ikinds[NIKINDS] = {4, 8, 16}; | |
2127 | static int rkinds[NRKINDS] = {4, 8, 10, 16}; | |
2128 | char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */ | |
2129 | ||
2130 | for (ikind=0; ikind < NIKINDS; ikind++) | |
5b200ac2 | 2131 | { |
644cb69f FXC |
2132 | itype = gfc_get_int_type (ikinds[ikind]); |
2133 | ||
2134 | for (jkind=0; jkind < NIKINDS; jkind++) | |
2135 | { | |
2136 | jtype = gfc_get_int_type (ikinds[jkind]); | |
2137 | if (itype && jtype) | |
2138 | { | |
2139 | sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind], | |
2140 | ikinds[jkind]); | |
2141 | gfor_fndecl_math_powi[jkind][ikind].integer = | |
2142 | gfc_build_library_function_decl (get_identifier (name), | |
2143 | jtype, 2, jtype, itype); | |
67fdae36 | 2144 | TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1; |
644cb69f FXC |
2145 | } |
2146 | } | |
2147 | ||
2148 | for (rkind = 0; rkind < NRKINDS; rkind ++) | |
5b200ac2 | 2149 | { |
644cb69f FXC |
2150 | rtype = gfc_get_real_type (rkinds[rkind]); |
2151 | if (rtype && itype) | |
2152 | { | |
2153 | sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind], | |
2154 | ikinds[ikind]); | |
2155 | gfor_fndecl_math_powi[rkind][ikind].real = | |
2156 | gfc_build_library_function_decl (get_identifier (name), | |
2157 | rtype, 2, rtype, itype); | |
67fdae36 | 2158 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1; |
644cb69f FXC |
2159 | } |
2160 | ||
2161 | ctype = gfc_get_complex_type (rkinds[rkind]); | |
2162 | if (ctype && itype) | |
2163 | { | |
2164 | sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind], | |
2165 | ikinds[ikind]); | |
2166 | gfor_fndecl_math_powi[rkind][ikind].cmplx = | |
2167 | gfc_build_library_function_decl (get_identifier (name), | |
2168 | ctype, 2,ctype, itype); | |
67fdae36 | 2169 | TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1; |
644cb69f | 2170 | } |
5b200ac2 FW |
2171 | } |
2172 | } | |
644cb69f FXC |
2173 | #undef NIKINDS |
2174 | #undef NRKINDS | |
5b200ac2 FW |
2175 | } |
2176 | ||
6de9cd9a DN |
2177 | gfor_fndecl_math_ishftc4 = |
2178 | gfc_build_library_function_decl (get_identifier (PREFIX("ishftc4")), | |
2179 | gfc_int4_type_node, | |
2180 | 3, gfc_int4_type_node, | |
2181 | gfc_int4_type_node, gfc_int4_type_node); | |
2182 | gfor_fndecl_math_ishftc8 = | |
2183 | gfc_build_library_function_decl (get_identifier (PREFIX("ishftc8")), | |
2184 | gfc_int8_type_node, | |
2185 | 3, gfc_int8_type_node, | |
644cb69f FXC |
2186 | gfc_int4_type_node, gfc_int4_type_node); |
2187 | if (gfc_int16_type_node) | |
2188 | gfor_fndecl_math_ishftc16 = | |
2189 | gfc_build_library_function_decl (get_identifier (PREFIX("ishftc16")), | |
2190 | gfc_int16_type_node, 3, | |
2191 | gfc_int16_type_node, | |
2192 | gfc_int4_type_node, | |
2193 | gfc_int4_type_node); | |
2194 | ||
5a0aad31 FXC |
2195 | /* BLAS functions. */ |
2196 | { | |
dd52ecb0 | 2197 | tree pint = build_pointer_type (integer_type_node); |
5a0aad31 FXC |
2198 | tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind)); |
2199 | tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind)); | |
2200 | tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind)); | |
2201 | tree pz = build_pointer_type | |
2202 | (gfc_get_complex_type (gfc_default_double_kind)); | |
2203 | ||
2204 | gfor_fndecl_sgemm = gfc_build_library_function_decl | |
2205 | (get_identifier | |
2206 | (gfc_option.flag_underscoring ? "sgemm_" | |
2207 | : "sgemm"), | |
2208 | void_type_node, 15, pchar_type_node, | |
2209 | pchar_type_node, pint, pint, pint, ps, ps, pint, | |
dd52ecb0 JB |
2210 | ps, pint, ps, ps, pint, integer_type_node, |
2211 | integer_type_node); | |
5a0aad31 FXC |
2212 | gfor_fndecl_dgemm = gfc_build_library_function_decl |
2213 | (get_identifier | |
2214 | (gfc_option.flag_underscoring ? "dgemm_" | |
2215 | : "dgemm"), | |
2216 | void_type_node, 15, pchar_type_node, | |
2217 | pchar_type_node, pint, pint, pint, pd, pd, pint, | |
dd52ecb0 JB |
2218 | pd, pint, pd, pd, pint, integer_type_node, |
2219 | integer_type_node); | |
5a0aad31 FXC |
2220 | gfor_fndecl_cgemm = gfc_build_library_function_decl |
2221 | (get_identifier | |
2222 | (gfc_option.flag_underscoring ? "cgemm_" | |
2223 | : "cgemm"), | |
2224 | void_type_node, 15, pchar_type_node, | |
2225 | pchar_type_node, pint, pint, pint, pc, pc, pint, | |
dd52ecb0 JB |
2226 | pc, pint, pc, pc, pint, integer_type_node, |
2227 | integer_type_node); | |
5a0aad31 FXC |
2228 | gfor_fndecl_zgemm = gfc_build_library_function_decl |
2229 | (get_identifier | |
2230 | (gfc_option.flag_underscoring ? "zgemm_" | |
2231 | : "zgemm"), | |
2232 | void_type_node, 15, pchar_type_node, | |
2233 | pchar_type_node, pint, pint, pint, pz, pz, pint, | |
dd52ecb0 JB |
2234 | pz, pint, pz, pz, pint, integer_type_node, |
2235 | integer_type_node); | |
5a0aad31 FXC |
2236 | } |
2237 | ||
6de9cd9a DN |
2238 | /* Other functions. */ |
2239 | gfor_fndecl_size0 = | |
2240 | gfc_build_library_function_decl (get_identifier (PREFIX("size0")), | |
2241 | gfc_array_index_type, | |
2242 | 1, pvoid_type_node); | |
2243 | gfor_fndecl_size1 = | |
2244 | gfc_build_library_function_decl (get_identifier (PREFIX("size1")), | |
2245 | gfc_array_index_type, | |
2246 | 2, pvoid_type_node, | |
2247 | gfc_array_index_type); | |
b41b2534 JB |
2248 | |
2249 | gfor_fndecl_iargc = | |
2250 | gfc_build_library_function_decl (get_identifier (PREFIX ("iargc")), | |
2251 | gfc_int4_type_node, | |
2252 | 0); | |
6de9cd9a DN |
2253 | } |
2254 | ||
2255 | ||
2256 | /* Make prototypes for runtime library functions. */ | |
2257 | ||
2258 | void | |
2259 | gfc_build_builtin_function_decls (void) | |
2260 | { | |
e2cad04b | 2261 | tree gfc_int4_type_node = gfc_get_int_type (4); |
6de9cd9a DN |
2262 | |
2263 | gfor_fndecl_stop_numeric = | |
2264 | gfc_build_library_function_decl (get_identifier (PREFIX("stop_numeric")), | |
2265 | void_type_node, 1, gfc_int4_type_node); | |
eed61baa TK |
2266 | /* Stop doesn't return. */ |
2267 | TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1; | |
2268 | ||
6de9cd9a DN |
2269 | gfor_fndecl_stop_string = |
2270 | gfc_build_library_function_decl (get_identifier (PREFIX("stop_string")), | |
2271 | void_type_node, 2, pchar_type_node, | |
2272 | gfc_int4_type_node); | |
eed61baa TK |
2273 | /* Stop doesn't return. */ |
2274 | TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1; | |
6de9cd9a DN |
2275 | |
2276 | gfor_fndecl_pause_numeric = | |
2277 | gfc_build_library_function_decl (get_identifier (PREFIX("pause_numeric")), | |
2278 | void_type_node, 1, gfc_int4_type_node); | |
2279 | ||
2280 | gfor_fndecl_pause_string = | |
2281 | gfc_build_library_function_decl (get_identifier (PREFIX("pause_string")), | |
2282 | void_type_node, 2, pchar_type_node, | |
2283 | gfc_int4_type_node); | |
2284 | ||
2285 | gfor_fndecl_select_string = | |
2286 | gfc_build_library_function_decl (get_identifier (PREFIX("select_string")), | |
7e4b97c7 TB |
2287 | integer_type_node, 4, pvoid_type_node, |
2288 | integer_type_node, pchar_type_node, | |
2289 | integer_type_node); | |
6de9cd9a DN |
2290 | |
2291 | gfor_fndecl_runtime_error = | |
2292 | gfc_build_library_function_decl (get_identifier (PREFIX("runtime_error")), | |
c8fe94c7 | 2293 | void_type_node, -1, pchar_type_node); |
16275f18 SB |
2294 | /* The runtime_error function does not return. */ |
2295 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1; | |
6de9cd9a | 2296 | |
f96d606f JD |
2297 | gfor_fndecl_runtime_error_at = |
2298 | gfc_build_library_function_decl (get_identifier (PREFIX("runtime_error_at")), | |
c8fe94c7 | 2299 | void_type_node, -2, pchar_type_node, |
f96d606f JD |
2300 | pchar_type_node); |
2301 | /* The runtime_error_at function does not return. */ | |
2302 | TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1; | |
2303 | ||
2304 | gfor_fndecl_generate_error = | |
2305 | gfc_build_library_function_decl (get_identifier (PREFIX("generate_error")), | |
2306 | void_type_node, 3, pvoid_type_node, | |
dd52ecb0 | 2307 | integer_type_node, pchar_type_node); |
f96d606f | 2308 | |
1529b8d9 FXC |
2309 | gfor_fndecl_os_error = |
2310 | gfc_build_library_function_decl (get_identifier (PREFIX("os_error")), | |
2311 | void_type_node, 1, pchar_type_node); | |
2312 | /* The runtime_error function does not return. */ | |
2313 | TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1; | |
2314 | ||
944b8b35 FXC |
2315 | gfor_fndecl_set_fpe = |
2316 | gfc_build_library_function_decl (get_identifier (PREFIX("set_fpe")), | |
dd52ecb0 | 2317 | void_type_node, 1, integer_type_node); |
944b8b35 | 2318 | |
68d2e027 JD |
2319 | /* Keep the array dimension in sync with the call, later in this file. */ |
2320 | gfor_fndecl_set_options = | |
2321 | gfc_build_library_function_decl (get_identifier (PREFIX("set_options")), | |
dd52ecb0 | 2322 | void_type_node, 2, integer_type_node, |
68d2e027 | 2323 | pvoid_type_node); |
8b67b708 | 2324 | |
eaa90d25 TK |
2325 | gfor_fndecl_set_convert = |
2326 | gfc_build_library_function_decl (get_identifier (PREFIX("set_convert")), | |
dd52ecb0 | 2327 | void_type_node, 1, integer_type_node); |
eaa90d25 | 2328 | |
d67ab5ee TK |
2329 | gfor_fndecl_set_record_marker = |
2330 | gfc_build_library_function_decl (get_identifier (PREFIX("set_record_marker")), | |
dd52ecb0 | 2331 | void_type_node, 1, integer_type_node); |
d67ab5ee | 2332 | |
07b3bbf2 TK |
2333 | gfor_fndecl_set_max_subrecord_length = |
2334 | gfc_build_library_function_decl (get_identifier (PREFIX("set_max_subrecord_length")), | |
dd52ecb0 | 2335 | void_type_node, 1, integer_type_node); |
07b3bbf2 | 2336 | |
6de9cd9a DN |
2337 | gfor_fndecl_in_pack = gfc_build_library_function_decl ( |
2338 | get_identifier (PREFIX("internal_pack")), | |
2339 | pvoid_type_node, 1, pvoid_type_node); | |
2340 | ||
2341 | gfor_fndecl_in_unpack = gfc_build_library_function_decl ( | |
2342 | get_identifier (PREFIX("internal_unpack")), | |
7e4b97c7 | 2343 | void_type_node, 2, pvoid_type_node, pvoid_type_node); |
6de9cd9a DN |
2344 | |
2345 | gfor_fndecl_associated = | |
2346 | gfc_build_library_function_decl ( | |
2347 | get_identifier (PREFIX("associated")), | |
8a09ef91 | 2348 | integer_type_node, 2, ppvoid_type_node, |
6de9cd9a DN |
2349 | ppvoid_type_node); |
2350 | ||
2351 | gfc_build_intrinsic_function_decls (); | |
2352 | gfc_build_intrinsic_lib_fndecls (); | |
2353 | gfc_build_io_library_fndecls (); | |
2354 | } | |
2355 | ||
2356 | ||
1f2959f0 | 2357 | /* Evaluate the length of dummy character variables. */ |
6de9cd9a DN |
2358 | |
2359 | static tree | |
417ab240 | 2360 | gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, tree fnbody) |
6de9cd9a DN |
2361 | { |
2362 | stmtblock_t body; | |
2363 | ||
faf28b3a | 2364 | gfc_finish_decl (cl->backend_decl); |
6de9cd9a DN |
2365 | |
2366 | gfc_start_block (&body); | |
2367 | ||
2368 | /* Evaluate the string length expression. */ | |
07368af0 | 2369 | gfc_conv_string_length (cl, &body); |
417ab240 JJ |
2370 | |
2371 | gfc_trans_vla_type_sizes (sym, &body); | |
2372 | ||
6de9cd9a DN |
2373 | gfc_add_expr_to_block (&body, fnbody); |
2374 | return gfc_finish_block (&body); | |
2375 | } | |
2376 | ||
2377 | ||
2378 | /* Allocate and cleanup an automatic character variable. */ | |
2379 | ||
2380 | static tree | |
2381 | gfc_trans_auto_character_variable (gfc_symbol * sym, tree fnbody) | |
2382 | { | |
2383 | stmtblock_t body; | |
2384 | tree decl; | |
6de9cd9a DN |
2385 | tree tmp; |
2386 | ||
6e45f57b PB |
2387 | gcc_assert (sym->backend_decl); |
2388 | gcc_assert (sym->ts.cl && sym->ts.cl->length); | |
6de9cd9a DN |
2389 | |
2390 | gfc_start_block (&body); | |
2391 | ||
2392 | /* Evaluate the string length expression. */ | |
07368af0 | 2393 | gfc_conv_string_length (sym->ts.cl, &body); |
6de9cd9a | 2394 | |
417ab240 JJ |
2395 | gfc_trans_vla_type_sizes (sym, &body); |
2396 | ||
6de9cd9a DN |
2397 | decl = sym->backend_decl; |
2398 | ||
1a186ec5 | 2399 | /* Emit a DECL_EXPR for this variable, which will cause the |
4ab2db93 | 2400 | gimplifier to allocate storage, and all that good stuff. */ |
44855d8c | 2401 | tmp = fold_build1 (DECL_EXPR, TREE_TYPE (decl), decl); |
6de9cd9a | 2402 | gfc_add_expr_to_block (&body, tmp); |
1a186ec5 | 2403 | |
6de9cd9a DN |
2404 | gfc_add_expr_to_block (&body, fnbody); |
2405 | return gfc_finish_block (&body); | |
2406 | } | |
2407 | ||
910450c1 FW |
2408 | /* Set the initial value of ASSIGN statement auxiliary variable explicitly. */ |
2409 | ||
2410 | static tree | |
2411 | gfc_trans_assign_aux_var (gfc_symbol * sym, tree fnbody) | |
2412 | { | |
2413 | stmtblock_t body; | |
2414 | ||
2415 | gcc_assert (sym->backend_decl); | |
2416 | gfc_start_block (&body); | |
2417 | ||
2418 | /* Set the initial value to length. See the comments in | |
2419 | function gfc_add_assign_aux_vars in this file. */ | |
2420 | gfc_add_modify_expr (&body, GFC_DECL_STRING_LEN (sym->backend_decl), | |
2421 | build_int_cst (NULL_TREE, -2)); | |
2422 | ||
2423 | gfc_add_expr_to_block (&body, fnbody); | |
2424 | return gfc_finish_block (&body); | |
2425 | } | |
2426 | ||
417ab240 JJ |
2427 | static void |
2428 | gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body) | |
2429 | { | |
2430 | tree t = *tp, var, val; | |
2431 | ||
2432 | if (t == NULL || t == error_mark_node) | |
2433 | return; | |
2434 | if (TREE_CONSTANT (t) || DECL_P (t)) | |
2435 | return; | |
2436 | ||
2437 | if (TREE_CODE (t) == SAVE_EXPR) | |
2438 | { | |
2439 | if (SAVE_EXPR_RESOLVED_P (t)) | |
2440 | { | |
2441 | *tp = TREE_OPERAND (t, 0); | |
2442 | return; | |
2443 | } | |
2444 | val = TREE_OPERAND (t, 0); | |
2445 | } | |
2446 | else | |
2447 | val = t; | |
2448 | ||
2449 | var = gfc_create_var_np (TREE_TYPE (t), NULL); | |
2450 | gfc_add_decl_to_function (var); | |
2451 | gfc_add_modify_expr (body, var, val); | |
2452 | if (TREE_CODE (t) == SAVE_EXPR) | |
2453 | TREE_OPERAND (t, 0) = var; | |
2454 | *tp = var; | |
2455 | } | |
2456 | ||
2457 | static void | |
2458 | gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body) | |
2459 | { | |
2460 | tree t; | |
2461 | ||
2462 | if (type == NULL || type == error_mark_node) | |
2463 | return; | |
2464 | ||
2465 | type = TYPE_MAIN_VARIANT (type); | |
2466 | ||
2467 | if (TREE_CODE (type) == INTEGER_TYPE) | |
2468 | { | |
2469 | gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body); | |
2470 | gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body); | |
2471 | ||
2472 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
2473 | { | |
2474 | TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type); | |
2475 | TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type); | |
2476 | } | |
2477 | } | |
2478 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
2479 | { | |
2480 | gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body); | |
2481 | gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body); | |
2482 | gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body); | |
2483 | gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body); | |
2484 | ||
2485 | for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) | |
2486 | { | |
2487 | TYPE_SIZE (t) = TYPE_SIZE (type); | |
2488 | TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type); | |
2489 | } | |
2490 | } | |
2491 | } | |
2492 | ||
2493 | /* Make sure all type sizes and array domains are either constant, | |
2494 | or variable or parameter decls. This is a simplified variant | |
2495 | of gimplify_type_sizes, but we can't use it here, as none of the | |
2496 | variables in the expressions have been gimplified yet. | |
2497 | As type sizes and domains for various variable length arrays | |
2498 | contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars | |
2499 | time, without this routine gimplify_type_sizes in the middle-end | |
2500 | could result in the type sizes being gimplified earlier than where | |
2501 | those variables are initialized. */ | |
2502 | ||
2503 | void | |
2504 | gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body) | |
2505 | { | |
2506 | tree type = TREE_TYPE (sym->backend_decl); | |
2507 | ||
2508 | if (TREE_CODE (type) == FUNCTION_TYPE | |
2509 | && (sym->attr.function || sym->attr.result || sym->attr.entry)) | |
2510 | { | |
2511 | if (! current_fake_result_decl) | |
2512 | return; | |
2513 | ||
2514 | type = TREE_TYPE (TREE_VALUE (current_fake_result_decl)); | |
2515 | } | |
2516 | ||
2517 | while (POINTER_TYPE_P (type)) | |
2518 | type = TREE_TYPE (type); | |
2519 | ||
2520 | if (GFC_DESCRIPTOR_TYPE_P (type)) | |
2521 | { | |
2522 | tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type); | |
2523 | ||
2524 | while (POINTER_TYPE_P (etype)) | |
2525 | etype = TREE_TYPE (etype); | |
2526 | ||
2527 | gfc_trans_vla_type_sizes_1 (etype, body); | |
2528 | } | |
2529 | ||
2530 | gfc_trans_vla_type_sizes_1 (type, body); | |
2531 | } | |
2532 | ||
6de9cd9a | 2533 | |
b7b184a8 PT |
2534 | /* Initialize a derived type by building an lvalue from the symbol |
2535 | and using trans_assignment to do the work. */ | |
f40eccb0 PT |
2536 | tree |
2537 | gfc_init_default_dt (gfc_symbol * sym, tree body) | |
d3837072 PT |
2538 | { |
2539 | stmtblock_t fnblock; | |
b7b184a8 | 2540 | gfc_expr *e; |
d3837072 PT |
2541 | tree tmp; |
2542 | tree present; | |
2543 | ||
2544 | gfc_init_block (&fnblock); | |
b7b184a8 PT |
2545 | gcc_assert (!sym->attr.allocatable); |
2546 | gfc_set_sym_referenced (sym); | |
2547 | e = gfc_lval_expr_from_sym (sym); | |
2548 | tmp = gfc_trans_assignment (e, sym->value, false); | |
2549 | if (sym->attr.dummy) | |
d3837072 | 2550 | { |
b7b184a8 PT |
2551 | present = gfc_conv_expr_present (sym); |
2552 | tmp = build3 (COND_EXPR, TREE_TYPE (tmp), present, | |
2553 | tmp, build_empty_stmt ()); | |
d3837072 | 2554 | } |
b7b184a8 PT |
2555 | gfc_add_expr_to_block (&fnblock, tmp); |
2556 | gfc_free_expr (e); | |
f40eccb0 PT |
2557 | if (body) |
2558 | gfc_add_expr_to_block (&fnblock, body); | |
d3837072 PT |
2559 | return gfc_finish_block (&fnblock); |
2560 | } | |
2561 | ||
2562 | ||
b7b184a8 PT |
2563 | /* Initialize INTENT(OUT) derived type dummies. */ |
2564 | static tree | |
2565 | init_intent_out_dt (gfc_symbol * proc_sym, tree body) | |
2566 | { | |
2567 | stmtblock_t fnblock; | |
2568 | gfc_formal_arglist *f; | |
2569 | ||
2570 | gfc_init_block (&fnblock); | |
2571 | for (f = proc_sym->formal; f; f = f->next) | |
2572 | if (f->sym && f->sym->attr.intent == INTENT_OUT | |
2573 | && f->sym->ts.type == BT_DERIVED | |
2574 | && !f->sym->ts.derived->attr.alloc_comp | |
2575 | && f->sym->value) | |
f40eccb0 | 2576 | body = gfc_init_default_dt (f->sym, body); |
b7b184a8 PT |
2577 | |
2578 | gfc_add_expr_to_block (&fnblock, body); | |
2579 | return gfc_finish_block (&fnblock); | |
2580 | } | |
2581 | ||
d3837072 | 2582 | |
6de9cd9a DN |
2583 | /* Generate function entry and exit code, and add it to the function body. |
2584 | This includes: | |
f8d0aee5 | 2585 | Allocation and initialization of array variables. |
6de9cd9a | 2586 | Allocation of character string variables. |
910450c1 FW |
2587 | Initialization and possibly repacking of dummy arrays. |
2588 | Initialization of ASSIGN statement auxiliary variable. */ | |
6de9cd9a DN |
2589 | |
2590 | static tree | |
2591 | gfc_trans_deferred_vars (gfc_symbol * proc_sym, tree fnbody) | |
2592 | { | |
2593 | locus loc; | |
2594 | gfc_symbol *sym; | |
417ab240 JJ |
2595 | gfc_formal_arglist *f; |
2596 | stmtblock_t body; | |
7114edca | 2597 | bool seen_trans_deferred_array = false; |
6de9cd9a DN |
2598 | |
2599 | /* Deal with implicit return variables. Explicit return variables will | |
2600 | already have been added. */ | |
2601 | if (gfc_return_by_reference (proc_sym) && proc_sym->result == proc_sym) | |
2602 | { | |
2603 | if (!current_fake_result_decl) | |
2604 | { | |
d198b59a JJ |
2605 | gfc_entry_list *el = NULL; |
2606 | if (proc_sym->attr.entry_master) | |
2607 | { | |
2608 | for (el = proc_sym->ns->entries; el; el = el->next) | |
2609 | if (el->sym != el->sym->result) | |
2610 | break; | |
2611 | } | |
766d0c8c DF |
2612 | /* TODO: move to the appropriate place in resolve.c. */ |
2613 | if (warn_return_type && el == NULL) | |
2614 | gfc_warning ("Return value of function '%s' at %L not set", | |
2615 | proc_sym->name, &proc_sym->declared_at); | |
6de9cd9a | 2616 | } |
d198b59a | 2617 | else if (proc_sym->as) |
6de9cd9a | 2618 | { |
417ab240 JJ |
2619 | tree result = TREE_VALUE (current_fake_result_decl); |
2620 | fnbody = gfc_trans_dummy_array_bias (proc_sym, result, fnbody); | |
f5f701ad PT |
2621 | |
2622 | /* An automatic character length, pointer array result. */ | |
2623 | if (proc_sym->ts.type == BT_CHARACTER | |
2624 | && TREE_CODE (proc_sym->ts.cl->backend_decl) == VAR_DECL) | |
2625 | fnbody = gfc_trans_dummy_character (proc_sym, proc_sym->ts.cl, | |
2626 | fnbody); | |
6de9cd9a DN |
2627 | } |
2628 | else if (proc_sym->ts.type == BT_CHARACTER) | |
2629 | { | |
2630 | if (TREE_CODE (proc_sym->ts.cl->backend_decl) == VAR_DECL) | |
417ab240 JJ |
2631 | fnbody = gfc_trans_dummy_character (proc_sym, proc_sym->ts.cl, |
2632 | fnbody); | |
6de9cd9a DN |
2633 | } |
2634 | else | |
973ff4c0 TS |
2635 | gcc_assert (gfc_option.flag_f2c |
2636 | && proc_sym->ts.type == BT_COMPLEX); | |
6de9cd9a DN |
2637 | } |
2638 | ||
d3837072 PT |
2639 | /* Initialize the INTENT(OUT) derived type dummy arguments. This |
2640 | should be done here so that the offsets and lbounds of arrays | |
2641 | are available. */ | |
2642 | fnbody = init_intent_out_dt (proc_sym, fnbody); | |
2643 | ||
6de9cd9a DN |
2644 | for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink) |
2645 | { | |
5046aff5 PT |
2646 | bool sym_has_alloc_comp = (sym->ts.type == BT_DERIVED) |
2647 | && sym->ts.derived->attr.alloc_comp; | |
6de9cd9a DN |
2648 | if (sym->attr.dimension) |
2649 | { | |
2650 | switch (sym->as->type) | |
2651 | { | |
2652 | case AS_EXPLICIT: | |
2653 | if (sym->attr.dummy || sym->attr.result) | |
2654 | fnbody = | |
2655 | gfc_trans_dummy_array_bias (sym, sym->backend_decl, fnbody); | |
2656 | else if (sym->attr.pointer || sym->attr.allocatable) | |
2657 | { | |
2658 | if (TREE_STATIC (sym->backend_decl)) | |
2659 | gfc_trans_static_array_pointer (sym); | |
2660 | else | |
7114edca PT |
2661 | { |
2662 | seen_trans_deferred_array = true; | |
2663 | fnbody = gfc_trans_deferred_array (sym, fnbody); | |
2664 | } | |
6de9cd9a DN |
2665 | } |
2666 | else | |
2667 | { | |
7114edca PT |
2668 | if (sym_has_alloc_comp) |
2669 | { | |
2670 | seen_trans_deferred_array = true; | |
2671 | fnbody = gfc_trans_deferred_array (sym, fnbody); | |
2672 | } | |
b7b184a8 PT |
2673 | else if (sym->ts.type == BT_DERIVED |
2674 | && sym->value | |
2675 | && !sym->attr.data | |
2676 | && sym->attr.save == SAVE_NONE) | |
f40eccb0 | 2677 | fnbody = gfc_init_default_dt (sym, fnbody); |
7114edca | 2678 | |
6de9cd9a DN |
2679 | gfc_get_backend_locus (&loc); |
2680 | gfc_set_backend_locus (&sym->declared_at); | |
2681 | fnbody = gfc_trans_auto_array_allocation (sym->backend_decl, | |
2682 | sym, fnbody); | |
2683 | gfc_set_backend_locus (&loc); | |
2684 | } | |
2685 | break; | |
2686 | ||
2687 | case AS_ASSUMED_SIZE: | |
2688 | /* Must be a dummy parameter. */ | |
6e45f57b | 2689 | gcc_assert (sym->attr.dummy); |
6de9cd9a DN |
2690 | |
2691 | /* We should always pass assumed size arrays the g77 way. */ | |
6de9cd9a DN |
2692 | fnbody = gfc_trans_g77_array (sym, fnbody); |
2693 | break; | |
2694 | ||
2695 | case AS_ASSUMED_SHAPE: | |
2696 | /* Must be a dummy parameter. */ | |
6e45f57b | 2697 | gcc_assert (sym->attr.dummy); |
6de9cd9a DN |
2698 | |
2699 | fnbody = gfc_trans_dummy_array_bias (sym, sym->backend_decl, | |
2700 | fnbody); | |
2701 | break; | |
2702 | ||
2703 | case AS_DEFERRED: | |
7114edca PT |
2704 | seen_trans_deferred_array = true; |
2705 | fnbody = gfc_trans_deferred_array (sym, fnbody); | |
6de9cd9a DN |
2706 | break; |
2707 | ||
2708 | default: | |
6e45f57b | 2709 | gcc_unreachable (); |
6de9cd9a | 2710 | } |
7114edca | 2711 | if (sym_has_alloc_comp && !seen_trans_deferred_array) |
5046aff5 | 2712 | fnbody = gfc_trans_deferred_array (sym, fnbody); |
6de9cd9a | 2713 | } |
5046aff5 PT |
2714 | else if (sym_has_alloc_comp) |
2715 | fnbody = gfc_trans_deferred_array (sym, fnbody); | |
6de9cd9a DN |
2716 | else if (sym->ts.type == BT_CHARACTER) |
2717 | { | |
2718 | gfc_get_backend_locus (&loc); | |
2719 | gfc_set_backend_locus (&sym->declared_at); | |
2720 | if (sym->attr.dummy || sym->attr.result) | |
417ab240 | 2721 | fnbody = gfc_trans_dummy_character (sym, sym->ts.cl, fnbody); |
6de9cd9a DN |
2722 | else |
2723 | fnbody = gfc_trans_auto_character_variable (sym, fnbody); | |
2724 | gfc_set_backend_locus (&loc); | |
2725 | } | |
910450c1 FW |
2726 | else if (sym->attr.assign) |
2727 | { | |
2728 | gfc_get_backend_locus (&loc); | |
2729 | gfc_set_backend_locus (&sym->declared_at); | |
2730 | fnbody = gfc_trans_assign_aux_var (sym, fnbody); | |
2731 | gfc_set_backend_locus (&loc); | |
2732 | } | |
b7b184a8 PT |
2733 | else if (sym->ts.type == BT_DERIVED |
2734 | && sym->value | |
2735 | && !sym->attr.data | |
2736 | && sym->attr.save == SAVE_NONE) | |
f40eccb0 | 2737 | fnbody = gfc_init_default_dt (sym, fnbody); |
6de9cd9a | 2738 | else |
6e45f57b | 2739 | gcc_unreachable (); |
6de9cd9a DN |
2740 | } |
2741 | ||
417ab240 JJ |
2742 | gfc_init_block (&body); |
2743 | ||
2744 | for (f = proc_sym->formal; f; f = f->next) | |
08113c73 PT |
2745 | { |
2746 | if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER) | |
2747 | { | |
2748 | gcc_assert (f->sym->ts.cl->backend_decl != NULL); | |
2749 | if (TREE_CODE (f->sym->ts.cl->backend_decl) == PARM_DECL) | |
2750 | gfc_trans_vla_type_sizes (f->sym, &body); | |
2751 | } | |
08113c73 | 2752 | } |
417ab240 JJ |
2753 | |
2754 | if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER | |
2755 | && current_fake_result_decl != NULL) | |
2756 | { | |
2757 | gcc_assert (proc_sym->ts.cl->backend_decl != NULL); | |
2758 | if (TREE_CODE (proc_sym->ts.cl->backend_decl) == PARM_DECL) | |
2759 | gfc_trans_vla_type_sizes (proc_sym, &body); | |
2760 | } | |
2761 | ||
2762 | gfc_add_expr_to_block (&body, fnbody); | |
2763 | return gfc_finish_block (&body); | |
6de9cd9a DN |
2764 | } |
2765 | ||
2766 | ||
2767 | /* Output an initialized decl for a module variable. */ | |
2768 | ||
2769 | static void | |
2770 | gfc_create_module_variable (gfc_symbol * sym) | |
2771 | { | |
2772 | tree decl; | |
6de9cd9a | 2773 | |
1a492601 PT |
2774 | /* Module functions with alternate entries are dealt with later and |
2775 | would get caught by the next condition. */ | |
2776 | if (sym->attr.entry) | |
2777 | return; | |
2778 | ||
a8b3b0b6 CR |
2779 | /* Make sure we convert the types of the derived types from iso_c_binding |
2780 | into (void *). */ | |
2781 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
2782 | && sym->ts.type == BT_DERIVED) | |
2783 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
2784 | ||
fdc55763 PT |
2785 | /* Only output variables and array valued, or derived type, |
2786 | parameters. */ | |
6de9cd9a | 2787 | if (sym->attr.flavor != FL_VARIABLE |
fdc55763 PT |
2788 | && !(sym->attr.flavor == FL_PARAMETER |
2789 | && (sym->attr.dimension || sym->ts.type == BT_DERIVED))) | |
6de9cd9a DN |
2790 | return; |
2791 | ||
9cbf8b41 TS |
2792 | /* Don't generate variables from other modules. Variables from |
2793 | COMMONs will already have been generated. */ | |
2794 | if (sym->attr.use_assoc || sym->attr.in_common) | |
6de9cd9a DN |
2795 | return; |
2796 | ||
30aabb86 | 2797 | /* Equivalenced variables arrive here after creation. */ |
b95605fb PT |
2798 | if (sym->backend_decl |
2799 | && (sym->equiv_built || sym->attr.in_equivalence)) | |
30aabb86 PT |
2800 | return; |
2801 | ||
6de9cd9a DN |
2802 | if (sym->backend_decl) |
2803 | internal_error ("backend decl for module variable %s already exists", | |
2804 | sym->name); | |
2805 | ||
2806 | /* We always want module variables to be created. */ | |
2807 | sym->attr.referenced = 1; | |
2808 | /* Create the decl. */ | |
2809 | decl = gfc_get_symbol_decl (sym); | |
2810 | ||
6de9cd9a DN |
2811 | /* Create the variable. */ |
2812 | pushdecl (decl); | |
0e6df31e | 2813 | rest_of_decl_compilation (decl, 1, 0); |
6de9cd9a DN |
2814 | |
2815 | /* Also add length of strings. */ | |
2816 | if (sym->ts.type == BT_CHARACTER) | |
2817 | { | |
2818 | tree length; | |
2819 | ||
2820 | length = sym->ts.cl->backend_decl; | |
2821 | if (!INTEGER_CST_P (length)) | |
2822 | { | |
2823 | pushdecl (length); | |
0e6df31e | 2824 | rest_of_decl_compilation (length, 1, 0); |
6de9cd9a DN |
2825 | } |
2826 | } | |
2827 | } | |
2828 | ||
2829 | ||
2830 | /* Generate all the required code for module variables. */ | |
2831 | ||
2832 | void | |
2833 | gfc_generate_module_vars (gfc_namespace * ns) | |
2834 | { | |
2835 | module_namespace = ns; | |
2836 | ||
472ca416 | 2837 | /* Check if the frontend left the namespace in a reasonable state. */ |
6e45f57b | 2838 | gcc_assert (ns->proc_name && !ns->proc_name->tlink); |
6de9cd9a | 2839 | |
9cbf8b41 TS |
2840 | /* Generate COMMON blocks. */ |
2841 | gfc_trans_common (ns); | |
2842 | ||
472ca416 | 2843 | /* Create decls for all the module variables. */ |
6de9cd9a DN |
2844 | gfc_traverse_ns (ns, gfc_create_module_variable); |
2845 | } | |
2846 | ||
2847 | static void | |
2848 | gfc_generate_contained_functions (gfc_namespace * parent) | |
2849 | { | |
2850 | gfc_namespace *ns; | |
2851 | ||
2852 | /* We create all the prototypes before generating any code. */ | |
2853 | for (ns = parent->contained; ns; ns = ns->sibling) | |
2854 | { | |
2855 | /* Skip namespaces from used modules. */ | |
2856 | if (ns->parent != parent) | |
2857 | continue; | |
2858 | ||
3d79abbd | 2859 | gfc_create_function_decl (ns); |
6de9cd9a DN |
2860 | } |
2861 | ||
2862 | for (ns = parent->contained; ns; ns = ns->sibling) | |
2863 | { | |
2864 | /* Skip namespaces from used modules. */ | |
2865 | if (ns->parent != parent) | |
2866 | continue; | |
2867 | ||
2868 | gfc_generate_function_code (ns); | |
2869 | } | |
2870 | } | |
2871 | ||
2872 | ||
3e978d30 PT |
2873 | /* Drill down through expressions for the array specification bounds and |
2874 | character length calling generate_local_decl for all those variables | |
2875 | that have not already been declared. */ | |
2876 | ||
2877 | static void | |
2878 | generate_local_decl (gfc_symbol *); | |
2879 | ||
908a2235 | 2880 | /* Traverse expr, marking all EXPR_VARIABLE symbols referenced. */ |
3e978d30 | 2881 | |
908a2235 PT |
2882 | static bool |
2883 | expr_decls (gfc_expr *e, gfc_symbol *sym, | |
2884 | int *f ATTRIBUTE_UNUSED) | |
2885 | { | |
2886 | if (e->expr_type != EXPR_VARIABLE | |
2887 | || sym == e->symtree->n.sym | |
3e978d30 PT |
2888 | || e->symtree->n.sym->mark |
2889 | || e->symtree->n.sym->ns != sym->ns) | |
908a2235 | 2890 | return false; |
3e978d30 | 2891 | |
908a2235 PT |
2892 | generate_local_decl (e->symtree->n.sym); |
2893 | return false; | |
2894 | } | |
3e978d30 | 2895 | |
908a2235 PT |
2896 | static void |
2897 | generate_expr_decls (gfc_symbol *sym, gfc_expr *e) | |
2898 | { | |
2899 | gfc_traverse_expr (e, sym, expr_decls, 0); | |
3e978d30 PT |
2900 | } |
2901 | ||
2902 | ||
66e4ab31 | 2903 | /* Check for dependencies in the character length and array spec. */ |
3e978d30 PT |
2904 | |
2905 | static void | |
2906 | generate_dependency_declarations (gfc_symbol *sym) | |
2907 | { | |
2908 | int i; | |
2909 | ||
2910 | if (sym->ts.type == BT_CHARACTER | |
10650fbb TB |
2911 | && sym->ts.cl |
2912 | && sym->ts.cl->length | |
2913 | && sym->ts.cl->length->expr_type != EXPR_CONSTANT) | |
3e978d30 PT |
2914 | generate_expr_decls (sym, sym->ts.cl->length); |
2915 | ||
2916 | if (sym->as && sym->as->rank) | |
2917 | { | |
2918 | for (i = 0; i < sym->as->rank; i++) | |
2919 | { | |
2920 | generate_expr_decls (sym, sym->as->lower[i]); | |
2921 | generate_expr_decls (sym, sym->as->upper[i]); | |
2922 | } | |
2923 | } | |
2924 | } | |
2925 | ||
2926 | ||
6de9cd9a DN |
2927 | /* Generate decls for all local variables. We do this to ensure correct |
2928 | handling of expressions which only appear in the specification of | |
2929 | other functions. */ | |
2930 | ||
2931 | static void | |
2932 | generate_local_decl (gfc_symbol * sym) | |
2933 | { | |
2934 | if (sym->attr.flavor == FL_VARIABLE) | |
2935 | { | |
3e978d30 PT |
2936 | /* Check for dependencies in the array specification and string |
2937 | length, adding the necessary declarations to the function. We | |
2938 | mark the symbol now, as well as in traverse_ns, to prevent | |
2939 | getting stuck in a circular dependency. */ | |
2940 | sym->mark = 1; | |
2941 | if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master) | |
2942 | generate_dependency_declarations (sym); | |
2943 | ||
6de9cd9a DN |
2944 | if (sym->attr.referenced) |
2945 | gfc_get_symbol_decl (sym); | |
534fd534 DF |
2946 | /* INTENT(out) dummy arguments are likely meant to be set. */ |
2947 | else if (warn_unused_variable | |
2948 | && sym->attr.dummy | |
2949 | && sym->attr.intent == INTENT_OUT) | |
d92693b4 | 2950 | gfc_warning ("Dummy argument '%s' at %L was declared INTENT(OUT) but was not set", |
534fd534 DF |
2951 | sym->name, &sym->declared_at); |
2952 | /* Specific warning for unused dummy arguments. */ | |
2953 | else if (warn_unused_variable && sym->attr.dummy) | |
d92693b4 | 2954 | gfc_warning ("Unused dummy argument '%s' at %L", sym->name, |
80f2bb6e | 2955 | &sym->declared_at); |
f8d0aee5 | 2956 | /* Warn for unused variables, but not if they're inside a common |
19e4c59d | 2957 | block or are use-associated. */ |
ce738b86 | 2958 | else if (warn_unused_variable |
766d0c8c | 2959 | && !(sym->attr.in_common || sym->attr.use_assoc || sym->mark)) |
d92693b4 | 2960 | gfc_warning ("Unused variable '%s' declared at %L", sym->name, |
80f2bb6e | 2961 | &sym->declared_at); |
417ab240 JJ |
2962 | /* For variable length CHARACTER parameters, the PARM_DECL already |
2963 | references the length variable, so force gfc_get_symbol_decl | |
2964 | even when not referenced. If optimize > 0, it will be optimized | |
2965 | away anyway. But do this only after emitting -Wunused-parameter | |
2966 | warning if requested. */ | |
2967 | if (sym->attr.dummy && ! sym->attr.referenced | |
2968 | && sym->ts.type == BT_CHARACTER | |
2969 | && sym->ts.cl->backend_decl != NULL | |
2970 | && TREE_CODE (sym->ts.cl->backend_decl) == VAR_DECL) | |
2971 | { | |
2972 | sym->attr.referenced = 1; | |
2973 | gfc_get_symbol_decl (sym); | |
2974 | } | |
534fd534 DF |
2975 | |
2976 | /* We do not want the middle-end to warn about unused parameters | |
2977 | as this was already done above. */ | |
2978 | if (sym->attr.dummy && sym->backend_decl != NULL_TREE) | |
2979 | TREE_NO_WARNING(sym->backend_decl) = 1; | |
6de9cd9a | 2980 | } |
33c0c5e9 DF |
2981 | else if (sym->attr.flavor == FL_PARAMETER) |
2982 | { | |
d92693b4 | 2983 | if (warn_unused_parameter |
33c0c5e9 DF |
2984 | && !sym->attr.referenced |
2985 | && !sym->attr.use_assoc) | |
d92693b4 | 2986 | gfc_warning ("Unused parameter '%s' declared at %L", sym->name, |
33c0c5e9 DF |
2987 | &sym->declared_at); |
2988 | } | |
766d0c8c DF |
2989 | else if (sym->attr.flavor == FL_PROCEDURE) |
2990 | { | |
2991 | /* TODO: move to the appropriate place in resolve.c. */ | |
2992 | if (warn_return_type | |
2993 | && sym->attr.function | |
2994 | && sym->result | |
2995 | && sym != sym->result | |
2996 | && !sym->result->attr.referenced | |
2997 | && !sym->attr.use_assoc | |
2998 | && sym->attr.if_source != IFSRC_IFBODY) | |
2999 | { | |
3000 | gfc_warning ("Return value '%s' of function '%s' declared at " | |
3001 | "%L not set", sym->result->name, sym->name, | |
3002 | &sym->result->declared_at); | |
3003 | ||
3004 | /* Prevents "Unused variable" warning for RESULT variables. */ | |
3005 | sym->mark = sym->result->mark = 1; | |
3006 | } | |
3007 | } | |
a8b3b0b6 | 3008 | |
8b16d231 CR |
3009 | if (sym->attr.dummy == 1) |
3010 | { | |
3011 | /* Modify the tree type for scalar character dummy arguments of bind(c) | |
3012 | procedures if they are passed by value. The tree type for them will | |
3013 | be promoted to INTEGER_TYPE for the middle end, which appears to be | |
3014 | what C would do with characters passed by-value. The value attribute | |
3015 | implies the dummy is a scalar. */ | |
3016 | if (sym->attr.value == 1 && sym->backend_decl != NULL | |
3017 | && sym->ts.type == BT_CHARACTER && sym->ts.is_c_interop | |
3018 | && sym->ns->proc_name != NULL && sym->ns->proc_name->attr.is_bind_c) | |
e032c2a1 | 3019 | gfc_conv_scalar_char_value (sym, NULL, NULL); |
8b16d231 CR |
3020 | } |
3021 | ||
a8b3b0b6 CR |
3022 | /* Make sure we convert the types of the derived types from iso_c_binding |
3023 | into (void *). */ | |
3024 | if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c | |
3025 | && sym->ts.type == BT_DERIVED) | |
3026 | sym->backend_decl = gfc_typenode_for_spec (&(sym->ts)); | |
6de9cd9a DN |
3027 | } |
3028 | ||
3029 | static void | |
3030 | generate_local_vars (gfc_namespace * ns) | |
3031 | { | |
3032 | gfc_traverse_ns (ns, generate_local_decl); | |
3033 | } | |
3034 | ||
3035 | ||
3d79abbd PB |
3036 | /* Generate a switch statement to jump to the correct entry point. Also |
3037 | creates the label decls for the entry points. */ | |
6de9cd9a | 3038 | |
3d79abbd PB |
3039 | static tree |
3040 | gfc_trans_entry_master_switch (gfc_entry_list * el) | |
6de9cd9a | 3041 | { |
3d79abbd PB |
3042 | stmtblock_t block; |
3043 | tree label; | |
3044 | tree tmp; | |
3045 | tree val; | |
6de9cd9a | 3046 | |
3d79abbd PB |
3047 | gfc_init_block (&block); |
3048 | for (; el; el = el->next) | |
3049 | { | |
3050 | /* Add the case label. */ | |
c006df4e | 3051 | label = gfc_build_label_decl (NULL_TREE); |
7d60be94 | 3052 | val = build_int_cst (gfc_array_index_type, el->id); |
923ab88c | 3053 | tmp = build3_v (CASE_LABEL_EXPR, val, NULL_TREE, label); |
3d79abbd | 3054 | gfc_add_expr_to_block (&block, tmp); |
7389bce6 | 3055 | |
3d79abbd PB |
3056 | /* And jump to the actual entry point. */ |
3057 | label = gfc_build_label_decl (NULL_TREE); | |
3d79abbd PB |
3058 | tmp = build1_v (GOTO_EXPR, label); |
3059 | gfc_add_expr_to_block (&block, tmp); | |
3060 | ||
3061 | /* Save the label decl. */ | |
3062 | el->label = label; | |
3063 | } | |
3064 | tmp = gfc_finish_block (&block); | |
3065 | /* The first argument selects the entry point. */ | |
3066 | val = DECL_ARGUMENTS (current_function_decl); | |
923ab88c | 3067 | tmp = build3_v (SWITCH_EXPR, val, tmp, NULL_TREE); |
3d79abbd | 3068 | return tmp; |
6de9cd9a DN |
3069 | } |
3070 | ||
44de5aeb | 3071 | |
6de9cd9a DN |
3072 | /* Generate code for a function. */ |
3073 | ||
3074 | void | |
3075 | gfc_generate_function_code (gfc_namespace * ns) | |
3076 | { | |
3077 | tree fndecl; | |
3078 | tree old_context; | |
3079 | tree decl; | |
3080 | tree tmp; | |
5046aff5 | 3081 | tree tmp2; |
6de9cd9a DN |
3082 | stmtblock_t block; |
3083 | stmtblock_t body; | |
3084 | tree result; | |
3085 | gfc_symbol *sym; | |
5046aff5 | 3086 | int rank; |
6de9cd9a DN |
3087 | |
3088 | sym = ns->proc_name; | |
3d79abbd | 3089 | |
6de9cd9a | 3090 | /* Check that the frontend isn't still using this. */ |
6e45f57b | 3091 | gcc_assert (sym->tlink == NULL); |
6de9cd9a DN |
3092 | sym->tlink = sym; |
3093 | ||
3094 | /* Create the declaration for functions with global scope. */ | |
3095 | if (!sym->backend_decl) | |
3d79abbd | 3096 | gfc_create_function_decl (ns); |
6de9cd9a DN |
3097 | |
3098 | fndecl = sym->backend_decl; | |
3099 | old_context = current_function_decl; | |
3100 | ||
3101 | if (old_context) | |
3102 | { | |
3103 | push_function_context (); | |
3104 | saved_parent_function_decls = saved_function_decls; | |
3105 | saved_function_decls = NULL_TREE; | |
3106 | } | |
3107 | ||
3d79abbd | 3108 | trans_function_start (sym); |
6de9cd9a | 3109 | |
6de9cd9a DN |
3110 | gfc_start_block (&block); |
3111 | ||
d198b59a JJ |
3112 | if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER) |
3113 | { | |
3114 | /* Copy length backend_decls to all entry point result | |
3115 | symbols. */ | |
3116 | gfc_entry_list *el; | |
3117 | tree backend_decl; | |
3118 | ||
3119 | gfc_conv_const_charlen (ns->proc_name->ts.cl); | |
3120 | backend_decl = ns->proc_name->result->ts.cl->backend_decl; | |
3121 | for (el = ns->entries; el; el = el->next) | |
3122 | el->sym->result->ts.cl->backend_decl = backend_decl; | |
3123 | } | |
3124 | ||
6de9cd9a DN |
3125 | /* Translate COMMON blocks. */ |
3126 | gfc_trans_common (ns); | |
3127 | ||
5f20c93a PT |
3128 | /* Null the parent fake result declaration if this namespace is |
3129 | a module function or an external procedures. */ | |
3130 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
3131 | || ns->parent == NULL) | |
3132 | parent_fake_result_decl = NULL_TREE; | |
3133 | ||
30aabb86 PT |
3134 | gfc_generate_contained_functions (ns); |
3135 | ||
6de9cd9a | 3136 | generate_local_vars (ns); |
7389bce6 | 3137 | |
5f20c93a PT |
3138 | /* Keep the parent fake result declaration in module functions |
3139 | or external procedures. */ | |
3140 | if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE) | |
3141 | || ns->parent == NULL) | |
3142 | current_fake_result_decl = parent_fake_result_decl; | |
3143 | else | |
3144 | current_fake_result_decl = NULL_TREE; | |
3145 | ||
6de9cd9a DN |
3146 | current_function_return_label = NULL; |
3147 | ||
3148 | /* Now generate the code for the body of this function. */ | |
3149 | gfc_init_block (&body); | |
3150 | ||
68d2e027 | 3151 | /* If this is the main program, add a call to set_options to set up the |
5f8f5313 | 3152 | runtime library Fortran language standard parameters. */ |
5f8f5313 | 3153 | if (sym->attr.is_main_program) |
8b67b708 | 3154 | { |
68d2e027 JD |
3155 | tree array_type, array, var; |
3156 | ||
3157 | /* Passing a new option to the library requires four modifications: | |
3158 | + add it to the tree_cons list below | |
3159 | + change the array size in the call to build_array_type | |
3160 | + change the first argument to the library call | |
3161 | gfor_fndecl_set_options | |
3162 | + modify the library (runtime/compile_options.c)! */ | |
3163 | array = tree_cons (NULL_TREE, | |
dd52ecb0 | 3164 | build_int_cst (integer_type_node, |
68d2e027 JD |
3165 | gfc_option.warn_std), NULL_TREE); |
3166 | array = tree_cons (NULL_TREE, | |
dd52ecb0 | 3167 | build_int_cst (integer_type_node, |
68d2e027 JD |
3168 | gfc_option.allow_std), array); |
3169 | array = tree_cons (NULL_TREE, | |
dd52ecb0 | 3170 | build_int_cst (integer_type_node, pedantic), array); |
68d2e027 | 3171 | array = tree_cons (NULL_TREE, |
dd52ecb0 | 3172 | build_int_cst (integer_type_node, |
68d2e027 JD |
3173 | gfc_option.flag_dump_core), array); |
3174 | array = tree_cons (NULL_TREE, | |
dd52ecb0 | 3175 | build_int_cst (integer_type_node, |
68d2e027 JD |
3176 | gfc_option.flag_backtrace), array); |
3177 | array = tree_cons (NULL_TREE, | |
dd52ecb0 | 3178 | build_int_cst (integer_type_node, |
68d2e027 JD |
3179 | gfc_option.flag_sign_zero), array); |
3180 | ||
18fe404f | 3181 | array = tree_cons (NULL_TREE, |
dd52ecb0 | 3182 | build_int_cst (integer_type_node, |
18fe404f TK |
3183 | flag_bounds_check), array); |
3184 | ||
dd52ecb0 | 3185 | array_type = build_array_type (integer_type_node, |
68d2e027 | 3186 | build_index_type (build_int_cst (NULL_TREE, |
18fe404f | 3187 | 6))); |
68d2e027 JD |
3188 | array = build_constructor_from_list (array_type, nreverse (array)); |
3189 | TREE_CONSTANT (array) = 1; | |
68d2e027 JD |
3190 | TREE_STATIC (array) = 1; |
3191 | ||
3192 | /* Create a static variable to hold the jump table. */ | |
3193 | var = gfc_create_var (array_type, "options"); | |
3194 | TREE_CONSTANT (var) = 1; | |
68d2e027 JD |
3195 | TREE_STATIC (var) = 1; |
3196 | TREE_READONLY (var) = 1; | |
3197 | DECL_INITIAL (var) = array; | |
3198 | var = gfc_build_addr_expr (pvoid_type_node, var); | |
3199 | ||
3200 | tmp = build_call_expr (gfor_fndecl_set_options, 2, | |
dd52ecb0 | 3201 | build_int_cst (integer_type_node, 7), var); |
8b67b708 FXC |
3202 | gfc_add_expr_to_block (&body, tmp); |
3203 | } | |
3204 | ||
944b8b35 FXC |
3205 | /* If this is the main program and a -ffpe-trap option was provided, |
3206 | add a call to set_fpe so that the library will raise a FPE when | |
3207 | needed. */ | |
3208 | if (sym->attr.is_main_program && gfc_option.fpe != 0) | |
3209 | { | |
5039610b | 3210 | tmp = build_call_expr (gfor_fndecl_set_fpe, 1, |
dd52ecb0 | 3211 | build_int_cst (integer_type_node, |
5039610b | 3212 | gfc_option.fpe)); |
944b8b35 FXC |
3213 | gfc_add_expr_to_block (&body, tmp); |
3214 | } | |
3215 | ||
eaa90d25 TK |
3216 | /* If this is the main program and an -fconvert option was provided, |
3217 | add a call to set_convert. */ | |
3218 | ||
d74b97cc | 3219 | if (sym->attr.is_main_program && gfc_option.convert != GFC_CONVERT_NATIVE) |
eaa90d25 | 3220 | { |
5039610b | 3221 | tmp = build_call_expr (gfor_fndecl_set_convert, 1, |
dd52ecb0 | 3222 | build_int_cst (integer_type_node, |
5039610b | 3223 | gfc_option.convert)); |
eaa90d25 TK |
3224 | gfc_add_expr_to_block (&body, tmp); |
3225 | } | |
3226 | ||
d67ab5ee TK |
3227 | /* If this is the main program and an -frecord-marker option was provided, |
3228 | add a call to set_record_marker. */ | |
3229 | ||
3230 | if (sym->attr.is_main_program && gfc_option.record_marker != 0) | |
3231 | { | |
5039610b | 3232 | tmp = build_call_expr (gfor_fndecl_set_record_marker, 1, |
dd52ecb0 | 3233 | build_int_cst (integer_type_node, |
5039610b | 3234 | gfc_option.record_marker)); |
d67ab5ee | 3235 | gfc_add_expr_to_block (&body, tmp); |
d67ab5ee | 3236 | } |
eaa90d25 | 3237 | |
07b3bbf2 TK |
3238 | if (sym->attr.is_main_program && gfc_option.max_subrecord_length != 0) |
3239 | { | |
5039610b SL |
3240 | tmp = build_call_expr (gfor_fndecl_set_max_subrecord_length, |
3241 | 1, | |
dd52ecb0 | 3242 | build_int_cst (integer_type_node, |
5039610b | 3243 | gfc_option.max_subrecord_length)); |
07b3bbf2 TK |
3244 | gfc_add_expr_to_block (&body, tmp); |
3245 | } | |
3246 | ||
6de9cd9a DN |
3247 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node |
3248 | && sym->attr.subroutine) | |
3249 | { | |
3250 | tree alternate_return; | |
5f20c93a | 3251 | alternate_return = gfc_get_fake_result_decl (sym, 0); |
6de9cd9a DN |
3252 | gfc_add_modify_expr (&body, alternate_return, integer_zero_node); |
3253 | } | |
3254 | ||
3d79abbd PB |
3255 | if (ns->entries) |
3256 | { | |
3257 | /* Jump to the correct entry point. */ | |
3258 | tmp = gfc_trans_entry_master_switch (ns->entries); | |
3259 | gfc_add_expr_to_block (&body, tmp); | |
3260 | } | |
3261 | ||
6de9cd9a DN |
3262 | tmp = gfc_trans_code (ns->code); |
3263 | gfc_add_expr_to_block (&body, tmp); | |
3264 | ||
3265 | /* Add a return label if needed. */ | |
3266 | if (current_function_return_label) | |
3267 | { | |
3268 | tmp = build1_v (LABEL_EXPR, current_function_return_label); | |
3269 | gfc_add_expr_to_block (&body, tmp); | |
3270 | } | |
3271 | ||
3272 | tmp = gfc_finish_block (&body); | |
3273 | /* Add code to create and cleanup arrays. */ | |
3274 | tmp = gfc_trans_deferred_vars (sym, tmp); | |
6de9cd9a DN |
3275 | |
3276 | if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node) | |
3277 | { | |
19e4c59d | 3278 | if (sym->attr.subroutine || sym == sym->result) |
6de9cd9a | 3279 | { |
417ab240 JJ |
3280 | if (current_fake_result_decl != NULL) |
3281 | result = TREE_VALUE (current_fake_result_decl); | |
3282 | else | |
3283 | result = NULL_TREE; | |
6de9cd9a DN |
3284 | current_fake_result_decl = NULL_TREE; |
3285 | } | |
3286 | else | |
3287 | result = sym->result->backend_decl; | |
3288 | ||
5046aff5 PT |
3289 | if (result != NULL_TREE && sym->attr.function |
3290 | && sym->ts.type == BT_DERIVED | |
73865312 TB |
3291 | && sym->ts.derived->attr.alloc_comp |
3292 | && !sym->attr.pointer) | |
5046aff5 PT |
3293 | { |
3294 | rank = sym->as ? sym->as->rank : 0; | |
3295 | tmp2 = gfc_nullify_alloc_comp (sym->ts.derived, result, rank); | |
3296 | gfc_add_expr_to_block (&block, tmp2); | |
3297 | } | |
3298 | ||
766d0c8c DF |
3299 | gfc_add_expr_to_block (&block, tmp); |
3300 | ||
3301 | if (result == NULL_TREE) | |
3302 | { | |
3303 | /* TODO: move to the appropriate place in resolve.c. */ | |
3304 | if (warn_return_type && !sym->attr.referenced && sym == sym->result) | |
3305 | gfc_warning ("Return value of function '%s' at %L not set", | |
3306 | sym->name, &sym->declared_at); | |
5046aff5 | 3307 | |
766d0c8c DF |
3308 | TREE_NO_WARNING(sym->backend_decl) = 1; |
3309 | } | |
6de9cd9a DN |
3310 | else |
3311 | { | |
da4c6ed8 TS |
3312 | /* Set the return value to the dummy result variable. The |
3313 | types may be different for scalar default REAL functions | |
3314 | with -ff2c, therefore we have to convert. */ | |
3315 | tmp = convert (TREE_TYPE (DECL_RESULT (fndecl)), result); | |
44855d8c TS |
3316 | tmp = fold_build2 (MODIFY_EXPR, TREE_TYPE (tmp), |
3317 | DECL_RESULT (fndecl), tmp); | |
923ab88c | 3318 | tmp = build1_v (RETURN_EXPR, tmp); |
6de9cd9a DN |
3319 | gfc_add_expr_to_block (&block, tmp); |
3320 | } | |
3321 | } | |
5046aff5 PT |
3322 | else |
3323 | gfc_add_expr_to_block (&block, tmp); | |
3324 | ||
6de9cd9a DN |
3325 | |
3326 | /* Add all the decls we created during processing. */ | |
3327 | decl = saved_function_decls; | |
3328 | while (decl) | |
3329 | { | |
3330 | tree next; | |
3331 | ||
3332 | next = TREE_CHAIN (decl); | |
3333 | TREE_CHAIN (decl) = NULL_TREE; | |
3334 | pushdecl (decl); | |
3335 | decl = next; | |
3336 | } | |
3337 | saved_function_decls = NULL_TREE; | |
3338 | ||
3339 | DECL_SAVED_TREE (fndecl) = gfc_finish_block (&block); | |
3340 | ||
3341 | /* Finish off this function and send it for code generation. */ | |
3342 | poplevel (1, 0, 1); | |
3343 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
3344 | ||
3345 | /* Output the GENERIC tree. */ | |
3346 | dump_function (TDI_original, fndecl); | |
3347 | ||
3348 | /* Store the end of the function, so that we get good line number | |
3349 | info for the epilogue. */ | |
3350 | cfun->function_end_locus = input_location; | |
3351 | ||
3352 | /* We're leaving the context of this function, so zap cfun. | |
3353 | It's still in DECL_STRUCT_FUNCTION, and we'll restore it in | |
3354 | tree_rest_of_compilation. */ | |
db2960f4 | 3355 | set_cfun (NULL); |
6de9cd9a DN |
3356 | |
3357 | if (old_context) | |
3358 | { | |
3359 | pop_function_context (); | |
3360 | saved_function_decls = saved_parent_function_decls; | |
3361 | } | |
3362 | current_function_decl = old_context; | |
3363 | ||
3364 | if (decl_function_context (fndecl)) | |
44de5aeb RK |
3365 | /* Register this function with cgraph just far enough to get it |
3366 | added to our parent's nested function list. */ | |
3367 | (void) cgraph_node (fndecl); | |
6de9cd9a DN |
3368 | else |
3369 | { | |
44de5aeb | 3370 | gfc_gimplify_function (fndecl); |
8f235343 | 3371 | cgraph_finalize_function (fndecl, false); |
6de9cd9a DN |
3372 | } |
3373 | } | |
3374 | ||
6de9cd9a DN |
3375 | void |
3376 | gfc_generate_constructors (void) | |
3377 | { | |
6e45f57b | 3378 | gcc_assert (gfc_static_ctors == NULL_TREE); |
6de9cd9a DN |
3379 | #if 0 |
3380 | tree fnname; | |
3381 | tree type; | |
3382 | tree fndecl; | |
3383 | tree decl; | |
3384 | tree tmp; | |
3385 | ||
3386 | if (gfc_static_ctors == NULL_TREE) | |
3387 | return; | |
3388 | ||
5880f14f | 3389 | fnname = get_file_function_name ("I"); |
6de9cd9a DN |
3390 | type = build_function_type (void_type_node, |
3391 | gfc_chainon_list (NULL_TREE, void_type_node)); | |
3392 | ||
3393 | fndecl = build_decl (FUNCTION_DECL, fnname, type); | |
3394 | TREE_PUBLIC (fndecl) = 1; | |
3395 | ||
3396 | decl = build_decl (RESULT_DECL, NULL_TREE, void_type_node); | |
b785f485 RH |
3397 | DECL_ARTIFICIAL (decl) = 1; |
3398 | DECL_IGNORED_P (decl) = 1; | |
6de9cd9a DN |
3399 | DECL_CONTEXT (decl) = fndecl; |
3400 | DECL_RESULT (fndecl) = decl; | |
3401 | ||
3402 | pushdecl (fndecl); | |
3403 | ||
3404 | current_function_decl = fndecl; | |
3405 | ||
0e6df31e | 3406 | rest_of_decl_compilation (fndecl, 1, 0); |
6de9cd9a | 3407 | |
0e6df31e | 3408 | make_decl_rtl (fndecl); |
6de9cd9a | 3409 | |
c8cc8542 | 3410 | init_function_start (fndecl); |
6de9cd9a | 3411 | |
6de9cd9a DN |
3412 | pushlevel (0); |
3413 | ||
3414 | for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors)) | |
3415 | { | |
5039610b | 3416 | tmp = build_call_expr (TREE_VALUE (gfc_static_ctors), 0); |
6de9cd9a DN |
3417 | DECL_SAVED_TREE (fndecl) = build_stmt (EXPR_STMT, tmp); |
3418 | } | |
3419 | ||
3420 | poplevel (1, 0, 1); | |
3421 | ||
3422 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
3423 | ||
3424 | free_after_parsing (cfun); | |
3425 | free_after_compilation (cfun); | |
3426 | ||
0f0377f6 | 3427 | tree_rest_of_compilation (fndecl); |
6de9cd9a DN |
3428 | |
3429 | current_function_decl = NULL_TREE; | |
3430 | #endif | |
3431 | } | |
3432 | ||
0de4325e TS |
3433 | /* Translates a BLOCK DATA program unit. This means emitting the |
3434 | commons contained therein plus their initializations. We also emit | |
3435 | a globally visible symbol to make sure that each BLOCK DATA program | |
3436 | unit remains unique. */ | |
3437 | ||
3438 | void | |
3439 | gfc_generate_block_data (gfc_namespace * ns) | |
3440 | { | |
3441 | tree decl; | |
3442 | tree id; | |
3443 | ||
c8cc8542 PB |
3444 | /* Tell the backend the source location of the block data. */ |
3445 | if (ns->proc_name) | |
3446 | gfc_set_backend_locus (&ns->proc_name->declared_at); | |
3447 | else | |
3448 | gfc_set_backend_locus (&gfc_current_locus); | |
3449 | ||
3450 | /* Process the DATA statements. */ | |
0de4325e TS |
3451 | gfc_trans_common (ns); |
3452 | ||
c8cc8542 PB |
3453 | /* Create a global symbol with the mane of the block data. This is to |
3454 | generate linker errors if the same name is used twice. It is never | |
3455 | really used. */ | |
0de4325e TS |
3456 | if (ns->proc_name) |
3457 | id = gfc_sym_mangled_function_id (ns->proc_name); | |
3458 | else | |
3459 | id = get_identifier ("__BLOCK_DATA__"); | |
3460 | ||
3461 | decl = build_decl (VAR_DECL, id, gfc_array_index_type); | |
3462 | TREE_PUBLIC (decl) = 1; | |
3463 | TREE_STATIC (decl) = 1; | |
3464 | ||
3465 | pushdecl (decl); | |
3466 | rest_of_decl_compilation (decl, 1, 0); | |
3467 | } | |
3468 | ||
83d890b9 | 3469 | |
6de9cd9a | 3470 | #include "gt-fortran-trans-decl.h" |