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6de9cd9a | 1 | /* Statement translation -- generate GCC trees from gfc_code. |
85ec4feb | 2 | Copyright (C) 2002-2018 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Paul Brook <paul@nowt.org> |
4 | and Steven Bosscher <s.bosscher@student.tudelft.nl> | |
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 | ||
23 | #include "config.h" | |
24 | #include "system.h" | |
25 | #include "coretypes.h" | |
c7131fb2 | 26 | #include "options.h" |
2adfab87 | 27 | #include "tree.h" |
6de9cd9a DN |
28 | #include "gfortran.h" |
29 | #include "trans.h" | |
2adfab87 | 30 | #include "stringpool.h" |
2adfab87 | 31 | #include "fold-const.h" |
6de9cd9a DN |
32 | #include "trans-stmt.h" |
33 | #include "trans-types.h" | |
34 | #include "trans-array.h" | |
35 | #include "trans-const.h" | |
3ded6210 | 36 | #include "dependency.h" |
6de9cd9a | 37 | |
6de9cd9a DN |
38 | typedef struct iter_info |
39 | { | |
40 | tree var; | |
41 | tree start; | |
42 | tree end; | |
43 | tree step; | |
44 | struct iter_info *next; | |
45 | } | |
46 | iter_info; | |
47 | ||
6de9cd9a DN |
48 | typedef struct forall_info |
49 | { | |
50 | iter_info *this_loop; | |
51 | tree mask; | |
6de9cd9a DN |
52 | tree maskindex; |
53 | int nvar; | |
54 | tree size; | |
e8d366ec | 55 | struct forall_info *prev_nest; |
2ca4e2c2 | 56 | bool do_concurrent; |
6de9cd9a DN |
57 | } |
58 | forall_info; | |
59 | ||
011daa76 RS |
60 | static void gfc_trans_where_2 (gfc_code *, tree, bool, |
61 | forall_info *, stmtblock_t *); | |
6de9cd9a DN |
62 | |
63 | /* Translate a F95 label number to a LABEL_EXPR. */ | |
64 | ||
65 | tree | |
66 | gfc_trans_label_here (gfc_code * code) | |
67 | { | |
68 | return build1_v (LABEL_EXPR, gfc_get_label_decl (code->here)); | |
69 | } | |
70 | ||
ce2df7c6 FW |
71 | |
72 | /* Given a variable expression which has been ASSIGNed to, find the decl | |
73 | containing the auxiliary variables. For variables in common blocks this | |
74 | is a field_decl. */ | |
75 | ||
76 | void | |
77 | gfc_conv_label_variable (gfc_se * se, gfc_expr * expr) | |
78 | { | |
79 | gcc_assert (expr->symtree->n.sym->attr.assign == 1); | |
80 | gfc_conv_expr (se, expr); | |
81 | /* Deals with variable in common block. Get the field declaration. */ | |
82 | if (TREE_CODE (se->expr) == COMPONENT_REF) | |
83 | se->expr = TREE_OPERAND (se->expr, 1); | |
910450c1 FW |
84 | /* Deals with dummy argument. Get the parameter declaration. */ |
85 | else if (TREE_CODE (se->expr) == INDIRECT_REF) | |
86 | se->expr = TREE_OPERAND (se->expr, 0); | |
ce2df7c6 FW |
87 | } |
88 | ||
6de9cd9a | 89 | /* Translate a label assignment statement. */ |
ce2df7c6 | 90 | |
6de9cd9a DN |
91 | tree |
92 | gfc_trans_label_assign (gfc_code * code) | |
93 | { | |
94 | tree label_tree; | |
95 | gfc_se se; | |
96 | tree len; | |
97 | tree addr; | |
98 | tree len_tree; | |
6de9cd9a DN |
99 | int label_len; |
100 | ||
101 | /* Start a new block. */ | |
102 | gfc_init_se (&se, NULL); | |
103 | gfc_start_block (&se.pre); | |
a513927a | 104 | gfc_conv_label_variable (&se, code->expr1); |
ce2df7c6 | 105 | |
6de9cd9a DN |
106 | len = GFC_DECL_STRING_LEN (se.expr); |
107 | addr = GFC_DECL_ASSIGN_ADDR (se.expr); | |
108 | ||
79bd1948 | 109 | label_tree = gfc_get_label_decl (code->label1); |
6de9cd9a | 110 | |
f3e7b9d6 TB |
111 | if (code->label1->defined == ST_LABEL_TARGET |
112 | || code->label1->defined == ST_LABEL_DO_TARGET) | |
6de9cd9a DN |
113 | { |
114 | label_tree = gfc_build_addr_expr (pvoid_type_node, label_tree); | |
f622221a | 115 | len_tree = build_int_cst (gfc_charlen_type_node, -1); |
6de9cd9a DN |
116 | } |
117 | else | |
118 | { | |
79bd1948 | 119 | gfc_expr *format = code->label1->format; |
d393bbd7 FXC |
120 | |
121 | label_len = format->value.character.length; | |
df09d1d5 | 122 | len_tree = build_int_cst (gfc_charlen_type_node, label_len); |
d393bbd7 FXC |
123 | label_tree = gfc_build_wide_string_const (format->ts.kind, label_len + 1, |
124 | format->value.character.string); | |
b078dfbf | 125 | label_tree = gfc_build_addr_expr (pvoid_type_node, label_tree); |
6de9cd9a DN |
126 | } |
127 | ||
f622221a | 128 | gfc_add_modify (&se.pre, len, fold_convert (TREE_TYPE (len), len_tree)); |
726a989a | 129 | gfc_add_modify (&se.pre, addr, label_tree); |
6de9cd9a DN |
130 | |
131 | return gfc_finish_block (&se.pre); | |
132 | } | |
133 | ||
134 | /* Translate a GOTO statement. */ | |
135 | ||
136 | tree | |
137 | gfc_trans_goto (gfc_code * code) | |
138 | { | |
dd18a33b | 139 | locus loc = code->loc; |
6de9cd9a DN |
140 | tree assigned_goto; |
141 | tree target; | |
142 | tree tmp; | |
6de9cd9a DN |
143 | gfc_se se; |
144 | ||
79bd1948 SK |
145 | if (code->label1 != NULL) |
146 | return build1_v (GOTO_EXPR, gfc_get_label_decl (code->label1)); | |
6de9cd9a DN |
147 | |
148 | /* ASSIGNED GOTO. */ | |
149 | gfc_init_se (&se, NULL); | |
150 | gfc_start_block (&se.pre); | |
a513927a | 151 | gfc_conv_label_variable (&se, code->expr1); |
6de9cd9a | 152 | tmp = GFC_DECL_STRING_LEN (se.expr); |
63ee5404 | 153 | tmp = fold_build2_loc (input_location, NE_EXPR, logical_type_node, tmp, |
bc98ed60 | 154 | build_int_cst (TREE_TYPE (tmp), -1)); |
0d52899f | 155 | gfc_trans_runtime_check (true, false, tmp, &se.pre, &loc, |
c8fe94c7 | 156 | "Assigned label is not a target label"); |
6de9cd9a DN |
157 | |
158 | assigned_goto = GFC_DECL_ASSIGN_ADDR (se.expr); | |
6de9cd9a | 159 | |
916bd5f0 DK |
160 | /* We're going to ignore a label list. It does not really change the |
161 | statement's semantics (because it is just a further restriction on | |
162 | what's legal code); before, we were comparing label addresses here, but | |
163 | that's a very fragile business and may break with optimization. So | |
164 | just ignore it. */ | |
165 | ||
bc98ed60 TB |
166 | target = fold_build1_loc (input_location, GOTO_EXPR, void_type_node, |
167 | assigned_goto); | |
916bd5f0 DK |
168 | gfc_add_expr_to_block (&se.pre, target); |
169 | return gfc_finish_block (&se.pre); | |
6de9cd9a DN |
170 | } |
171 | ||
172 | ||
3d79abbd PB |
173 | /* Translate an ENTRY statement. Just adds a label for this entry point. */ |
174 | tree | |
175 | gfc_trans_entry (gfc_code * code) | |
176 | { | |
177 | return build1_v (LABEL_EXPR, code->ext.entry->label); | |
178 | } | |
179 | ||
180 | ||
fafcf9e6 MM |
181 | /* Replace a gfc_ss structure by another both in the gfc_se struct |
182 | and the gfc_loopinfo struct. This is used in gfc_conv_elemental_dependencies | |
183 | to replace a variable ss by the corresponding temporary. */ | |
184 | ||
185 | static void | |
186 | replace_ss (gfc_se *se, gfc_ss *old_ss, gfc_ss *new_ss) | |
187 | { | |
188 | gfc_ss **sess, **loopss; | |
189 | ||
190 | /* The old_ss is a ss for a single variable. */ | |
191 | gcc_assert (old_ss->info->type == GFC_SS_SECTION); | |
192 | ||
193 | for (sess = &(se->ss); *sess != gfc_ss_terminator; sess = &((*sess)->next)) | |
194 | if (*sess == old_ss) | |
195 | break; | |
196 | gcc_assert (*sess != gfc_ss_terminator); | |
197 | ||
198 | *sess = new_ss; | |
199 | new_ss->next = old_ss->next; | |
200 | ||
201 | ||
202 | for (loopss = &(se->loop->ss); *loopss != gfc_ss_terminator; | |
203 | loopss = &((*loopss)->loop_chain)) | |
204 | if (*loopss == old_ss) | |
205 | break; | |
206 | gcc_assert (*loopss != gfc_ss_terminator); | |
207 | ||
208 | *loopss = new_ss; | |
209 | new_ss->loop_chain = old_ss->loop_chain; | |
210 | new_ss->loop = old_ss->loop; | |
211 | ||
212 | gfc_free_ss (old_ss); | |
213 | } | |
214 | ||
215 | ||
476220e7 PT |
216 | /* Check for dependencies between INTENT(IN) and INTENT(OUT) arguments of |
217 | elemental subroutines. Make temporaries for output arguments if any such | |
218 | dependencies are found. Output arguments are chosen because internal_unpack | |
219 | can be used, as is, to copy the result back to the variable. */ | |
220 | static void | |
221 | gfc_conv_elemental_dependencies (gfc_se * se, gfc_se * loopse, | |
2b0bd714 MM |
222 | gfc_symbol * sym, gfc_actual_arglist * arg, |
223 | gfc_dep_check check_variable) | |
476220e7 PT |
224 | { |
225 | gfc_actual_arglist *arg0; | |
226 | gfc_expr *e; | |
227 | gfc_formal_arglist *formal; | |
476220e7 PT |
228 | gfc_se parmse; |
229 | gfc_ss *ss; | |
476220e7 | 230 | gfc_symbol *fsym; |
476220e7 | 231 | tree data; |
476220e7 PT |
232 | tree size; |
233 | tree tmp; | |
234 | ||
235 | if (loopse->ss == NULL) | |
236 | return; | |
237 | ||
238 | ss = loopse->ss; | |
239 | arg0 = arg; | |
4cbc9039 | 240 | formal = gfc_sym_get_dummy_args (sym); |
476220e7 PT |
241 | |
242 | /* Loop over all the arguments testing for dependencies. */ | |
243 | for (; arg != NULL; arg = arg->next, formal = formal ? formal->next : NULL) | |
244 | { | |
245 | e = arg->expr; | |
246 | if (e == NULL) | |
247 | continue; | |
248 | ||
8b704316 | 249 | /* Obtain the info structure for the current argument. */ |
476220e7 | 250 | for (ss = loopse->ss; ss && ss != gfc_ss_terminator; ss = ss->next) |
fafcf9e6 | 251 | if (ss->info->expr == e) |
476220e7 | 252 | break; |
476220e7 PT |
253 | |
254 | /* If there is a dependency, create a temporary and use it | |
66e4ab31 | 255 | instead of the variable. */ |
476220e7 PT |
256 | fsym = formal ? formal->sym : NULL; |
257 | if (e->expr_type == EXPR_VARIABLE | |
258 | && e->rank && fsym | |
06bcd751 PT |
259 | && fsym->attr.intent != INTENT_IN |
260 | && gfc_check_fncall_dependency (e, fsym->attr.intent, | |
2b0bd714 | 261 | sym, arg0, check_variable)) |
476220e7 | 262 | { |
79e5286c | 263 | tree initial, temptype; |
12f681a0 | 264 | stmtblock_t temp_post; |
fafcf9e6 | 265 | gfc_ss *tmp_ss; |
12f681a0 | 266 | |
fafcf9e6 MM |
267 | tmp_ss = gfc_get_array_ss (gfc_ss_terminator, NULL, ss->dimen, |
268 | GFC_SS_SECTION); | |
269 | gfc_mark_ss_chain_used (tmp_ss, 1); | |
270 | tmp_ss->info->expr = ss->info->expr; | |
271 | replace_ss (loopse, ss, tmp_ss); | |
476220e7 | 272 | |
12f681a0 DK |
273 | /* Obtain the argument descriptor for unpacking. */ |
274 | gfc_init_se (&parmse, NULL); | |
275 | parmse.want_pointer = 1; | |
2960a368 | 276 | gfc_conv_expr_descriptor (&parmse, e); |
12f681a0 DK |
277 | gfc_add_block_to_block (&se->pre, &parmse.pre); |
278 | ||
eb74e79b PT |
279 | /* If we've got INTENT(INOUT) or a derived type with INTENT(OUT), |
280 | initialize the array temporary with a copy of the values. */ | |
281 | if (fsym->attr.intent == INTENT_INOUT | |
282 | || (fsym->ts.type ==BT_DERIVED | |
283 | && fsym->attr.intent == INTENT_OUT)) | |
12f681a0 | 284 | initial = parmse.expr; |
866e6d1b PT |
285 | /* For class expressions, we always initialize with the copy of |
286 | the values. */ | |
287 | else if (e->ts.type == BT_CLASS) | |
288 | initial = parmse.expr; | |
12f681a0 DK |
289 | else |
290 | initial = NULL_TREE; | |
291 | ||
866e6d1b PT |
292 | if (e->ts.type != BT_CLASS) |
293 | { | |
294 | /* Find the type of the temporary to create; we don't use the type | |
295 | of e itself as this breaks for subcomponent-references in e | |
296 | (where the type of e is that of the final reference, but | |
297 | parmse.expr's type corresponds to the full derived-type). */ | |
298 | /* TODO: Fix this somehow so we don't need a temporary of the whole | |
299 | array but instead only the components referenced. */ | |
300 | temptype = TREE_TYPE (parmse.expr); /* Pointer to descriptor. */ | |
301 | gcc_assert (TREE_CODE (temptype) == POINTER_TYPE); | |
302 | temptype = TREE_TYPE (temptype); | |
303 | temptype = gfc_get_element_type (temptype); | |
304 | } | |
305 | ||
306 | else | |
307 | /* For class arrays signal that the size of the dynamic type has to | |
308 | be obtained from the vtable, using the 'initial' expression. */ | |
309 | temptype = NULL_TREE; | |
79e5286c DK |
310 | |
311 | /* Generate the temporary. Cleaning up the temporary should be the | |
312 | very last thing done, so we add the code to a new block and add it | |
313 | to se->post as last instructions. */ | |
476220e7 PT |
314 | size = gfc_create_var (gfc_array_index_type, NULL); |
315 | data = gfc_create_var (pvoid_type_node, NULL); | |
12f681a0 | 316 | gfc_init_block (&temp_post); |
fafcf9e6 | 317 | tmp = gfc_trans_create_temp_array (&se->pre, &temp_post, tmp_ss, |
41645793 MM |
318 | temptype, initial, false, true, |
319 | false, &arg->expr->where); | |
726a989a | 320 | gfc_add_modify (&se->pre, size, tmp); |
fafcf9e6 | 321 | tmp = fold_convert (pvoid_type_node, tmp_ss->info->data.array.data); |
726a989a | 322 | gfc_add_modify (&se->pre, data, tmp); |
476220e7 | 323 | |
fafcf9e6 MM |
324 | /* Update other ss' delta. */ |
325 | gfc_set_delta (loopse->loop); | |
476220e7 | 326 | |
866e6d1b PT |
327 | /* Copy the result back using unpack..... */ |
328 | if (e->ts.type != BT_CLASS) | |
329 | tmp = build_call_expr_loc (input_location, | |
330 | gfor_fndecl_in_unpack, 2, parmse.expr, data); | |
331 | else | |
332 | { | |
333 | /* ... except for class results where the copy is | |
334 | unconditional. */ | |
335 | tmp = build_fold_indirect_ref_loc (input_location, parmse.expr); | |
336 | tmp = gfc_conv_descriptor_data_get (tmp); | |
337 | tmp = build_call_expr_loc (input_location, | |
338 | builtin_decl_explicit (BUILT_IN_MEMCPY), | |
ee4b6b52 JJ |
339 | 3, tmp, data, |
340 | fold_convert (size_type_node, size)); | |
866e6d1b | 341 | } |
476220e7 PT |
342 | gfc_add_expr_to_block (&se->post, tmp); |
343 | ||
79e5286c | 344 | /* parmse.pre is already added above. */ |
476220e7 | 345 | gfc_add_block_to_block (&se->post, &parmse.post); |
12f681a0 | 346 | gfc_add_block_to_block (&se->post, &temp_post); |
476220e7 PT |
347 | } |
348 | } | |
349 | } | |
350 | ||
351 | ||
9436b221 MM |
352 | /* Get the interface symbol for the procedure corresponding to the given call. |
353 | We can't get the procedure symbol directly as we have to handle the case | |
354 | of (deferred) type-bound procedures. */ | |
355 | ||
356 | static gfc_symbol * | |
357 | get_proc_ifc_for_call (gfc_code *c) | |
358 | { | |
359 | gfc_symbol *sym; | |
360 | ||
361 | gcc_assert (c->op == EXEC_ASSIGN_CALL || c->op == EXEC_CALL); | |
362 | ||
363 | sym = gfc_get_proc_ifc_for_expr (c->expr1); | |
364 | ||
365 | /* Fall back/last resort try. */ | |
366 | if (sym == NULL) | |
367 | sym = c->resolved_sym; | |
368 | ||
369 | return sym; | |
370 | } | |
371 | ||
372 | ||
6de9cd9a DN |
373 | /* Translate the CALL statement. Builds a call to an F95 subroutine. */ |
374 | ||
375 | tree | |
eb74e79b PT |
376 | gfc_trans_call (gfc_code * code, bool dependency_check, |
377 | tree mask, tree count1, bool invert) | |
6de9cd9a DN |
378 | { |
379 | gfc_se se; | |
48474141 | 380 | gfc_ss * ss; |
dda895f9 | 381 | int has_alternate_specifier; |
2b0bd714 | 382 | gfc_dep_check check_variable; |
eb74e79b PT |
383 | tree index = NULL_TREE; |
384 | tree maskexpr = NULL_TREE; | |
385 | tree tmp; | |
6de9cd9a DN |
386 | |
387 | /* A CALL starts a new block because the actual arguments may have to | |
388 | be evaluated first. */ | |
389 | gfc_init_se (&se, NULL); | |
390 | gfc_start_block (&se.pre); | |
391 | ||
6e45f57b | 392 | gcc_assert (code->resolved_sym); |
6de9cd9a | 393 | |
48474141 PT |
394 | ss = gfc_ss_terminator; |
395 | if (code->resolved_sym->attr.elemental) | |
17d038cd | 396 | ss = gfc_walk_elemental_function_args (ss, code->ext.actual, |
9436b221 | 397 | get_proc_ifc_for_call (code), |
dec131b6 | 398 | GFC_SS_REFERENCE); |
6de9cd9a | 399 | |
48474141 PT |
400 | /* Is not an elemental subroutine call with array valued arguments. */ |
401 | if (ss == gfc_ss_terminator) | |
6de9cd9a | 402 | { |
48474141 PT |
403 | |
404 | /* Translate the call. */ | |
405 | has_alternate_specifier | |
713485cc | 406 | = gfc_conv_procedure_call (&se, code->resolved_sym, code->ext.actual, |
989ea525 | 407 | code->expr1, NULL); |
48474141 PT |
408 | |
409 | /* A subroutine without side-effect, by definition, does nothing! */ | |
410 | TREE_SIDE_EFFECTS (se.expr) = 1; | |
411 | ||
412 | /* Chain the pieces together and return the block. */ | |
413 | if (has_alternate_specifier) | |
414 | { | |
415 | gfc_code *select_code; | |
416 | gfc_symbol *sym; | |
417 | select_code = code->next; | |
418 | gcc_assert(select_code->op == EXEC_SELECT); | |
a513927a | 419 | sym = select_code->expr1->symtree->n.sym; |
48474141 | 420 | se.expr = convert (gfc_typenode_for_spec (&sym->ts), se.expr); |
9ebe2d22 PT |
421 | if (sym->backend_decl == NULL) |
422 | sym->backend_decl = gfc_get_symbol_decl (sym); | |
726a989a | 423 | gfc_add_modify (&se.pre, sym->backend_decl, se.expr); |
48474141 PT |
424 | } |
425 | else | |
426 | gfc_add_expr_to_block (&se.pre, se.expr); | |
427 | ||
428 | gfc_add_block_to_block (&se.pre, &se.post); | |
6de9cd9a | 429 | } |
48474141 | 430 | |
6de9cd9a | 431 | else |
48474141 PT |
432 | { |
433 | /* An elemental subroutine call with array valued arguments has | |
434 | to be scalarized. */ | |
435 | gfc_loopinfo loop; | |
436 | stmtblock_t body; | |
437 | stmtblock_t block; | |
438 | gfc_se loopse; | |
70e72065 | 439 | gfc_se depse; |
48474141 PT |
440 | |
441 | /* gfc_walk_elemental_function_args renders the ss chain in the | |
12f681a0 | 442 | reverse order to the actual argument order. */ |
48474141 PT |
443 | ss = gfc_reverse_ss (ss); |
444 | ||
445 | /* Initialize the loop. */ | |
446 | gfc_init_se (&loopse, NULL); | |
447 | gfc_init_loopinfo (&loop); | |
448 | gfc_add_ss_to_loop (&loop, ss); | |
449 | ||
450 | gfc_conv_ss_startstride (&loop); | |
8b704316 PT |
451 | /* TODO: gfc_conv_loop_setup generates a temporary for vector |
452 | subscripts. This could be prevented in the elemental case | |
453 | as temporaries are handled separatedly | |
2b0bd714 | 454 | (below in gfc_conv_elemental_dependencies). */ |
88016532 JD |
455 | if (code->expr1) |
456 | gfc_conv_loop_setup (&loop, &code->expr1->where); | |
457 | else | |
458 | gfc_conv_loop_setup (&loop, &code->loc); | |
459 | ||
48474141 PT |
460 | gfc_mark_ss_chain_used (ss, 1); |
461 | ||
476220e7 PT |
462 | /* Convert the arguments, checking for dependencies. */ |
463 | gfc_copy_loopinfo_to_se (&loopse, &loop); | |
464 | loopse.ss = ss; | |
465 | ||
06bcd751 | 466 | /* For operator assignment, do dependency checking. */ |
476220e7 | 467 | if (dependency_check) |
2b0bd714 MM |
468 | check_variable = ELEM_CHECK_VARIABLE; |
469 | else | |
470 | check_variable = ELEM_DONT_CHECK_VARIABLE; | |
70e72065 MM |
471 | |
472 | gfc_init_se (&depse, NULL); | |
473 | gfc_conv_elemental_dependencies (&depse, &loopse, code->resolved_sym, | |
2b0bd714 | 474 | code->ext.actual, check_variable); |
476220e7 | 475 | |
70e72065 MM |
476 | gfc_add_block_to_block (&loop.pre, &depse.pre); |
477 | gfc_add_block_to_block (&loop.post, &depse.post); | |
478 | ||
48474141 PT |
479 | /* Generate the loop body. */ |
480 | gfc_start_scalarized_body (&loop, &body); | |
481 | gfc_init_block (&block); | |
48474141 | 482 | |
eb74e79b PT |
483 | if (mask && count1) |
484 | { | |
485 | /* Form the mask expression according to the mask. */ | |
486 | index = count1; | |
487 | maskexpr = gfc_build_array_ref (mask, index, NULL); | |
488 | if (invert) | |
bc98ed60 TB |
489 | maskexpr = fold_build1_loc (input_location, TRUTH_NOT_EXPR, |
490 | TREE_TYPE (maskexpr), maskexpr); | |
eb74e79b PT |
491 | } |
492 | ||
48474141 | 493 | /* Add the subroutine call to the block. */ |
eb74e79b | 494 | gfc_conv_procedure_call (&loopse, code->resolved_sym, |
9771b263 DN |
495 | code->ext.actual, code->expr1, |
496 | NULL); | |
eb74e79b PT |
497 | |
498 | if (mask && count1) | |
499 | { | |
500 | tmp = build3_v (COND_EXPR, maskexpr, loopse.expr, | |
c2255bc4 | 501 | build_empty_stmt (input_location)); |
eb74e79b | 502 | gfc_add_expr_to_block (&loopse.pre, tmp); |
bc98ed60 TB |
503 | tmp = fold_build2_loc (input_location, PLUS_EXPR, |
504 | gfc_array_index_type, | |
505 | count1, gfc_index_one_node); | |
eb74e79b PT |
506 | gfc_add_modify (&loopse.pre, count1, tmp); |
507 | } | |
508 | else | |
509 | gfc_add_expr_to_block (&loopse.pre, loopse.expr); | |
48474141 PT |
510 | |
511 | gfc_add_block_to_block (&block, &loopse.pre); | |
512 | gfc_add_block_to_block (&block, &loopse.post); | |
513 | ||
514 | /* Finish up the loop block and the loop. */ | |
515 | gfc_add_expr_to_block (&body, gfc_finish_block (&block)); | |
516 | gfc_trans_scalarizing_loops (&loop, &body); | |
517 | gfc_add_block_to_block (&se.pre, &loop.pre); | |
518 | gfc_add_block_to_block (&se.pre, &loop.post); | |
476220e7 | 519 | gfc_add_block_to_block (&se.pre, &se.post); |
48474141 PT |
520 | gfc_cleanup_loop (&loop); |
521 | } | |
6de9cd9a | 522 | |
6de9cd9a DN |
523 | return gfc_finish_block (&se.pre); |
524 | } | |
525 | ||
526 | ||
527 | /* Translate the RETURN statement. */ | |
528 | ||
529 | tree | |
d74d8807 | 530 | gfc_trans_return (gfc_code * code) |
6de9cd9a | 531 | { |
a513927a | 532 | if (code->expr1) |
6de9cd9a DN |
533 | { |
534 | gfc_se se; | |
535 | tree tmp; | |
536 | tree result; | |
537 | ||
da4c6ed8 | 538 | /* If code->expr is not NULL, this return statement must appear |
d74d8807 | 539 | in a subroutine and current_fake_result_decl has already |
6de9cd9a DN |
540 | been generated. */ |
541 | ||
5f20c93a | 542 | result = gfc_get_fake_result_decl (NULL, 0); |
6de9cd9a | 543 | if (!result) |
d74d8807 | 544 | { |
db30e21c JM |
545 | gfc_warning (0, |
546 | "An alternate return at %L without a * dummy argument", | |
48749dbc | 547 | &code->expr1->where); |
d74d8807 DK |
548 | return gfc_generate_return (); |
549 | } | |
6de9cd9a DN |
550 | |
551 | /* Start a new block for this statement. */ | |
552 | gfc_init_se (&se, NULL); | |
553 | gfc_start_block (&se.pre); | |
554 | ||
a513927a | 555 | gfc_conv_expr (&se, code->expr1); |
6de9cd9a | 556 | |
ba3ff5c2 DK |
557 | /* Note that the actually returned expression is a simple value and |
558 | does not depend on any pointers or such; thus we can clean-up with | |
559 | se.post before returning. */ | |
bc98ed60 TB |
560 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, TREE_TYPE (result), |
561 | result, fold_convert (TREE_TYPE (result), | |
562 | se.expr)); | |
6de9cd9a | 563 | gfc_add_expr_to_block (&se.pre, tmp); |
ba3ff5c2 | 564 | gfc_add_block_to_block (&se.pre, &se.post); |
6de9cd9a | 565 | |
d74d8807 | 566 | tmp = gfc_generate_return (); |
6de9cd9a | 567 | gfc_add_expr_to_block (&se.pre, tmp); |
6de9cd9a DN |
568 | return gfc_finish_block (&se.pre); |
569 | } | |
d74d8807 DK |
570 | |
571 | return gfc_generate_return (); | |
6de9cd9a DN |
572 | } |
573 | ||
574 | ||
575 | /* Translate the PAUSE statement. We have to translate this statement | |
576 | to a runtime library call. */ | |
577 | ||
578 | tree | |
579 | gfc_trans_pause (gfc_code * code) | |
580 | { | |
6cc22cf4 | 581 | tree gfc_int8_type_node = gfc_get_int_type (8); |
6de9cd9a | 582 | gfc_se se; |
6de9cd9a | 583 | tree tmp; |
6de9cd9a DN |
584 | |
585 | /* Start a new block for this statement. */ | |
586 | gfc_init_se (&se, NULL); | |
587 | gfc_start_block (&se.pre); | |
588 | ||
589 | ||
a513927a | 590 | if (code->expr1 == NULL) |
6de9cd9a | 591 | { |
6cc22cf4 | 592 | tmp = build_int_cst (size_type_node, 0); |
db3927fb | 593 | tmp = build_call_expr_loc (input_location, |
6d1b0f92 JD |
594 | gfor_fndecl_pause_string, 2, |
595 | build_int_cst (pchar_type_node, 0), tmp); | |
596 | } | |
597 | else if (code->expr1->ts.type == BT_INTEGER) | |
598 | { | |
599 | gfc_conv_expr (&se, code->expr1); | |
600 | tmp = build_call_expr_loc (input_location, | |
601 | gfor_fndecl_pause_numeric, 1, | |
6cc22cf4 | 602 | fold_convert (gfc_int8_type_node, se.expr)); |
6de9cd9a DN |
603 | } |
604 | else | |
605 | { | |
a513927a | 606 | gfc_conv_expr_reference (&se, code->expr1); |
db3927fb AH |
607 | tmp = build_call_expr_loc (input_location, |
608 | gfor_fndecl_pause_string, 2, | |
6cc22cf4 JB |
609 | se.expr, fold_convert (size_type_node, |
610 | se.string_length)); | |
6de9cd9a DN |
611 | } |
612 | ||
6de9cd9a DN |
613 | gfc_add_expr_to_block (&se.pre, tmp); |
614 | ||
615 | gfc_add_block_to_block (&se.pre, &se.post); | |
616 | ||
617 | return gfc_finish_block (&se.pre); | |
618 | } | |
619 | ||
620 | ||
621 | /* Translate the STOP statement. We have to translate this statement | |
622 | to a runtime library call. */ | |
623 | ||
624 | tree | |
d0a4a61c | 625 | gfc_trans_stop (gfc_code *code, bool error_stop) |
6de9cd9a DN |
626 | { |
627 | gfc_se se; | |
6de9cd9a | 628 | tree tmp; |
6de9cd9a DN |
629 | |
630 | /* Start a new block for this statement. */ | |
631 | gfc_init_se (&se, NULL); | |
632 | gfc_start_block (&se.pre); | |
633 | ||
a513927a | 634 | if (code->expr1 == NULL) |
6de9cd9a | 635 | { |
3f5fabc0 | 636 | tmp = build_int_cst (size_type_node, 0); |
6d1b0f92 | 637 | tmp = build_call_expr_loc (input_location, |
60386f50 | 638 | error_stop |
f19626cf | 639 | ? (flag_coarray == GFC_FCOARRAY_LIB |
60386f50 TB |
640 | ? gfor_fndecl_caf_error_stop_str |
641 | : gfor_fndecl_error_stop_string) | |
0daa7ed9 AF |
642 | : (flag_coarray == GFC_FCOARRAY_LIB |
643 | ? gfor_fndecl_caf_stop_str | |
644 | : gfor_fndecl_stop_string), | |
dffb1e22 JB |
645 | 3, build_int_cst (pchar_type_node, 0), tmp, |
646 | boolean_false_node); | |
6d1b0f92 JD |
647 | } |
648 | else if (code->expr1->ts.type == BT_INTEGER) | |
649 | { | |
650 | gfc_conv_expr (&se, code->expr1); | |
db3927fb | 651 | tmp = build_call_expr_loc (input_location, |
60386f50 | 652 | error_stop |
f19626cf | 653 | ? (flag_coarray == GFC_FCOARRAY_LIB |
60386f50 TB |
654 | ? gfor_fndecl_caf_error_stop |
655 | : gfor_fndecl_error_stop_numeric) | |
0daa7ed9 AF |
656 | : (flag_coarray == GFC_FCOARRAY_LIB |
657 | ? gfor_fndecl_caf_stop_numeric | |
dffb1e22 JB |
658 | : gfor_fndecl_stop_numeric), 2, |
659 | fold_convert (integer_type_node, se.expr), | |
660 | boolean_false_node); | |
6de9cd9a DN |
661 | } |
662 | else | |
663 | { | |
a513927a | 664 | gfc_conv_expr_reference (&se, code->expr1); |
db3927fb | 665 | tmp = build_call_expr_loc (input_location, |
60386f50 | 666 | error_stop |
f19626cf | 667 | ? (flag_coarray == GFC_FCOARRAY_LIB |
60386f50 TB |
668 | ? gfor_fndecl_caf_error_stop_str |
669 | : gfor_fndecl_error_stop_string) | |
0daa7ed9 AF |
670 | : (flag_coarray == GFC_FCOARRAY_LIB |
671 | ? gfor_fndecl_caf_stop_str | |
672 | : gfor_fndecl_stop_string), | |
dffb1e22 JB |
673 | 3, se.expr, fold_convert (size_type_node, |
674 | se.string_length), | |
675 | boolean_false_node); | |
6de9cd9a DN |
676 | } |
677 | ||
6de9cd9a DN |
678 | gfc_add_expr_to_block (&se.pre, tmp); |
679 | ||
680 | gfc_add_block_to_block (&se.pre, &se.post); | |
681 | ||
682 | return gfc_finish_block (&se.pre); | |
683 | } | |
684 | ||
ef78bc3c AV |
685 | /* Translate the FAIL IMAGE statement. */ |
686 | ||
687 | tree | |
688 | gfc_trans_fail_image (gfc_code *code ATTRIBUTE_UNUSED) | |
689 | { | |
690 | if (flag_coarray == GFC_FCOARRAY_LIB) | |
691 | return build_call_expr_loc (input_location, | |
692 | gfor_fndecl_caf_fail_image, 1, | |
693 | build_int_cst (pchar_type_node, 0)); | |
694 | else | |
695 | { | |
696 | const char *name = gfc_get_string (PREFIX ("exit_i%d"), 4); | |
697 | gfc_symbol *exsym = gfc_get_intrinsic_sub_symbol (name); | |
698 | tree tmp = gfc_get_symbol_decl (exsym); | |
699 | return build_call_expr_loc (input_location, tmp, 1, integer_zero_node); | |
700 | } | |
701 | } | |
702 | ||
f8862a1b DR |
703 | /* Translate the FORM TEAM statement. */ |
704 | ||
705 | tree | |
706 | gfc_trans_form_team (gfc_code *code) | |
707 | { | |
708 | if (flag_coarray == GFC_FCOARRAY_LIB) | |
709 | { | |
710 | gfc_se argse; | |
711 | tree team_id,team_type; | |
712 | gfc_init_se (&argse, NULL); | |
713 | gfc_conv_expr_val (&argse, code->expr1); | |
714 | team_id = fold_convert (integer_type_node, argse.expr); | |
715 | gfc_init_se (&argse, NULL); | |
716 | gfc_conv_expr_val (&argse, code->expr2); | |
717 | team_type = gfc_build_addr_expr (ppvoid_type_node, argse.expr); | |
718 | ||
719 | return build_call_expr_loc (input_location, | |
720 | gfor_fndecl_caf_form_team, 3, | |
721 | team_id, team_type, | |
722 | build_int_cst (integer_type_node, 0)); | |
723 | } | |
724 | else | |
725 | { | |
726 | const char *name = gfc_get_string (PREFIX ("exit_i%d"), 4); | |
727 | gfc_symbol *exsym = gfc_get_intrinsic_sub_symbol (name); | |
728 | tree tmp = gfc_get_symbol_decl (exsym); | |
729 | return build_call_expr_loc (input_location, tmp, 1, integer_zero_node); | |
730 | } | |
731 | } | |
732 | ||
733 | /* Translate the CHANGE TEAM statement. */ | |
734 | ||
735 | tree | |
736 | gfc_trans_change_team (gfc_code *code) | |
737 | { | |
738 | if (flag_coarray == GFC_FCOARRAY_LIB) | |
739 | { | |
740 | gfc_se argse; | |
741 | tree team_type; | |
742 | ||
743 | gfc_init_se (&argse, NULL); | |
744 | gfc_conv_expr_val (&argse, code->expr1); | |
745 | team_type = gfc_build_addr_expr (ppvoid_type_node, argse.expr); | |
746 | ||
747 | return build_call_expr_loc (input_location, | |
748 | gfor_fndecl_caf_change_team, 2, team_type, | |
749 | build_int_cst (integer_type_node, 0)); | |
750 | } | |
751 | else | |
752 | { | |
753 | const char *name = gfc_get_string (PREFIX ("exit_i%d"), 4); | |
754 | gfc_symbol *exsym = gfc_get_intrinsic_sub_symbol (name); | |
755 | tree tmp = gfc_get_symbol_decl (exsym); | |
756 | return build_call_expr_loc (input_location, tmp, 1, integer_zero_node); | |
757 | } | |
758 | } | |
759 | ||
760 | /* Translate the END TEAM statement. */ | |
761 | ||
762 | tree | |
763 | gfc_trans_end_team (gfc_code *code ATTRIBUTE_UNUSED) | |
764 | { | |
765 | if (flag_coarray == GFC_FCOARRAY_LIB) | |
766 | { | |
767 | return build_call_expr_loc (input_location, | |
768 | gfor_fndecl_caf_end_team, 1, | |
769 | build_int_cst (pchar_type_node, 0)); | |
770 | } | |
771 | else | |
772 | { | |
773 | const char *name = gfc_get_string (PREFIX ("exit_i%d"), 4); | |
774 | gfc_symbol *exsym = gfc_get_intrinsic_sub_symbol (name); | |
775 | tree tmp = gfc_get_symbol_decl (exsym); | |
776 | return build_call_expr_loc (input_location, tmp, 1, integer_zero_node); | |
777 | } | |
778 | } | |
779 | ||
780 | /* Translate the SYNC TEAM statement. */ | |
781 | ||
782 | tree | |
783 | gfc_trans_sync_team (gfc_code *code) | |
784 | { | |
785 | if (flag_coarray == GFC_FCOARRAY_LIB) | |
786 | { | |
787 | gfc_se argse; | |
788 | tree team_type; | |
789 | ||
790 | gfc_init_se (&argse, NULL); | |
791 | gfc_conv_expr_val (&argse, code->expr1); | |
792 | team_type = gfc_build_addr_expr (ppvoid_type_node, argse.expr); | |
793 | ||
794 | return build_call_expr_loc (input_location, | |
795 | gfor_fndecl_caf_sync_team, 2, | |
796 | team_type, | |
797 | build_int_cst (integer_type_node, 0)); | |
798 | } | |
799 | else | |
800 | { | |
801 | const char *name = gfc_get_string (PREFIX ("exit_i%d"), 4); | |
802 | gfc_symbol *exsym = gfc_get_intrinsic_sub_symbol (name); | |
803 | tree tmp = gfc_get_symbol_decl (exsym); | |
804 | return build_call_expr_loc (input_location, tmp, 1, integer_zero_node); | |
805 | } | |
806 | } | |
6de9cd9a | 807 | |
fea54935 | 808 | tree |
9f3880d1 | 809 | gfc_trans_lock_unlock (gfc_code *code, gfc_exec_op op) |
fea54935 TB |
810 | { |
811 | gfc_se se, argse; | |
9f3880d1 TB |
812 | tree stat = NULL_TREE, stat2 = NULL_TREE; |
813 | tree lock_acquired = NULL_TREE, lock_acquired2 = NULL_TREE; | |
fea54935 TB |
814 | |
815 | /* Short cut: For single images without STAT= or LOCK_ACQUIRED | |
816 | return early. (ERRMSG= is always untouched for -fcoarray=single.) */ | |
f19626cf | 817 | if (!code->expr2 && !code->expr4 && flag_coarray != GFC_FCOARRAY_LIB) |
8b704316 | 818 | return NULL_TREE; |
fea54935 | 819 | |
fea54935 TB |
820 | if (code->expr2) |
821 | { | |
822 | gcc_assert (code->expr2->expr_type == EXPR_VARIABLE); | |
823 | gfc_init_se (&argse, NULL); | |
824 | gfc_conv_expr_val (&argse, code->expr2); | |
825 | stat = argse.expr; | |
826 | } | |
9f3880d1 TB |
827 | else if (flag_coarray == GFC_FCOARRAY_LIB) |
828 | stat = null_pointer_node; | |
fea54935 TB |
829 | |
830 | if (code->expr4) | |
831 | { | |
832 | gcc_assert (code->expr4->expr_type == EXPR_VARIABLE); | |
833 | gfc_init_se (&argse, NULL); | |
834 | gfc_conv_expr_val (&argse, code->expr4); | |
835 | lock_acquired = argse.expr; | |
836 | } | |
9f3880d1 TB |
837 | else if (flag_coarray == GFC_FCOARRAY_LIB) |
838 | lock_acquired = null_pointer_node; | |
839 | ||
840 | gfc_start_block (&se.pre); | |
841 | if (flag_coarray == GFC_FCOARRAY_LIB) | |
842 | { | |
843 | tree tmp, token, image_index, errmsg, errmsg_len; | |
844 | tree index = size_zero_node; | |
845 | tree caf_decl = gfc_get_tree_for_caf_expr (code->expr1); | |
846 | ||
847 | if (code->expr1->symtree->n.sym->ts.type != BT_DERIVED | |
848 | || code->expr1->symtree->n.sym->ts.u.derived->from_intmod | |
849 | != INTMOD_ISO_FORTRAN_ENV | |
850 | || code->expr1->symtree->n.sym->ts.u.derived->intmod_sym_id | |
851 | != ISOFORTRAN_LOCK_TYPE) | |
852 | { | |
853 | gfc_error ("Sorry, the lock component of derived type at %L is not " | |
854 | "yet supported", &code->expr1->where); | |
855 | return NULL_TREE; | |
856 | } | |
857 | ||
3c9f5092 AV |
858 | gfc_get_caf_token_offset (&se, &token, NULL, caf_decl, NULL_TREE, |
859 | code->expr1); | |
9f3880d1 TB |
860 | |
861 | if (gfc_is_coindexed (code->expr1)) | |
862 | image_index = gfc_caf_get_image_index (&se.pre, code->expr1, caf_decl); | |
863 | else | |
864 | image_index = integer_zero_node; | |
865 | ||
866 | /* For arrays, obtain the array index. */ | |
867 | if (gfc_expr_attr (code->expr1).dimension) | |
868 | { | |
869 | tree desc, tmp, extent, lbound, ubound; | |
870 | gfc_array_ref *ar, ar2; | |
871 | int i; | |
872 | ||
873 | /* TODO: Extend this, once DT components are supported. */ | |
874 | ar = &code->expr1->ref->u.ar; | |
875 | ar2 = *ar; | |
876 | memset (ar, '\0', sizeof (*ar)); | |
877 | ar->as = ar2.as; | |
878 | ar->type = AR_FULL; | |
879 | ||
880 | gfc_init_se (&argse, NULL); | |
881 | argse.descriptor_only = 1; | |
882 | gfc_conv_expr_descriptor (&argse, code->expr1); | |
883 | gfc_add_block_to_block (&se.pre, &argse.pre); | |
884 | desc = argse.expr; | |
885 | *ar = ar2; | |
886 | ||
887 | extent = integer_one_node; | |
888 | for (i = 0; i < ar->dimen; i++) | |
889 | { | |
890 | gfc_init_se (&argse, NULL); | |
891 | gfc_conv_expr_type (&argse, ar->start[i], integer_type_node); | |
892 | gfc_add_block_to_block (&argse.pre, &argse.pre); | |
893 | lbound = gfc_conv_descriptor_lbound_get (desc, gfc_rank_cst[i]); | |
894 | tmp = fold_build2_loc (input_location, MINUS_EXPR, | |
895 | integer_type_node, argse.expr, | |
896 | fold_convert(integer_type_node, lbound)); | |
897 | tmp = fold_build2_loc (input_location, MULT_EXPR, | |
898 | integer_type_node, extent, tmp); | |
899 | index = fold_build2_loc (input_location, PLUS_EXPR, | |
900 | integer_type_node, index, tmp); | |
901 | if (i < ar->dimen - 1) | |
902 | { | |
903 | ubound = gfc_conv_descriptor_ubound_get (desc, gfc_rank_cst[i]); | |
904 | tmp = gfc_conv_array_extent_dim (lbound, ubound, NULL); | |
905 | tmp = fold_convert (integer_type_node, tmp); | |
906 | extent = fold_build2_loc (input_location, MULT_EXPR, | |
907 | integer_type_node, extent, tmp); | |
908 | } | |
909 | } | |
910 | } | |
911 | ||
912 | /* errmsg. */ | |
913 | if (code->expr3) | |
914 | { | |
915 | gfc_init_se (&argse, NULL); | |
5df445a2 | 916 | argse.want_pointer = 1; |
9f3880d1 TB |
917 | gfc_conv_expr (&argse, code->expr3); |
918 | gfc_add_block_to_block (&se.pre, &argse.pre); | |
919 | errmsg = argse.expr; | |
3f5fabc0 | 920 | errmsg_len = fold_convert (size_type_node, argse.string_length); |
9f3880d1 TB |
921 | } |
922 | else | |
923 | { | |
924 | errmsg = null_pointer_node; | |
3f5fabc0 | 925 | errmsg_len = build_zero_cst (size_type_node); |
9f3880d1 TB |
926 | } |
927 | ||
928 | if (stat != null_pointer_node && TREE_TYPE (stat) != integer_type_node) | |
929 | { | |
930 | stat2 = stat; | |
931 | stat = gfc_create_var (integer_type_node, "stat"); | |
932 | } | |
933 | ||
934 | if (lock_acquired != null_pointer_node | |
935 | && TREE_TYPE (lock_acquired) != integer_type_node) | |
936 | { | |
937 | lock_acquired2 = lock_acquired; | |
938 | lock_acquired = gfc_create_var (integer_type_node, "acquired"); | |
939 | } | |
940 | ||
941 | if (op == EXEC_LOCK) | |
942 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_lock, 7, | |
943 | token, index, image_index, | |
944 | lock_acquired != null_pointer_node | |
945 | ? gfc_build_addr_expr (NULL, lock_acquired) | |
946 | : lock_acquired, | |
947 | stat != null_pointer_node | |
948 | ? gfc_build_addr_expr (NULL, stat) : stat, | |
949 | errmsg, errmsg_len); | |
950 | else | |
951 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_unlock, 6, | |
952 | token, index, image_index, | |
953 | stat != null_pointer_node | |
954 | ? gfc_build_addr_expr (NULL, stat) : stat, | |
955 | errmsg, errmsg_len); | |
956 | gfc_add_expr_to_block (&se.pre, tmp); | |
957 | ||
985f6c79 TB |
958 | /* It guarantees memory consistency within the same segment */ |
959 | tmp = gfc_build_string_const (strlen ("memory")+1, "memory"), | |
960 | tmp = build5_loc (input_location, ASM_EXPR, void_type_node, | |
961 | gfc_build_string_const (1, ""), NULL_TREE, NULL_TREE, | |
962 | tree_cons (NULL_TREE, tmp, NULL_TREE), NULL_TREE); | |
963 | ASM_VOLATILE_P (tmp) = 1; | |
964 | ||
965 | gfc_add_expr_to_block (&se.pre, tmp); | |
966 | ||
9f3880d1 TB |
967 | if (stat2 != NULL_TREE) |
968 | gfc_add_modify (&se.pre, stat2, | |
969 | fold_convert (TREE_TYPE (stat2), stat)); | |
970 | ||
971 | if (lock_acquired2 != NULL_TREE) | |
972 | gfc_add_modify (&se.pre, lock_acquired2, | |
973 | fold_convert (TREE_TYPE (lock_acquired2), | |
974 | lock_acquired)); | |
975 | ||
976 | return gfc_finish_block (&se.pre); | |
977 | } | |
fea54935 TB |
978 | |
979 | if (stat != NULL_TREE) | |
980 | gfc_add_modify (&se.pre, stat, build_int_cst (TREE_TYPE (stat), 0)); | |
981 | ||
982 | if (lock_acquired != NULL_TREE) | |
983 | gfc_add_modify (&se.pre, lock_acquired, | |
984 | fold_convert (TREE_TYPE (lock_acquired), | |
985 | boolean_true_node)); | |
986 | ||
987 | return gfc_finish_block (&se.pre); | |
988 | } | |
989 | ||
5df445a2 TB |
990 | tree |
991 | gfc_trans_event_post_wait (gfc_code *code, gfc_exec_op op) | |
992 | { | |
993 | gfc_se se, argse; | |
994 | tree stat = NULL_TREE, stat2 = NULL_TREE; | |
995 | tree until_count = NULL_TREE; | |
996 | ||
997 | if (code->expr2) | |
998 | { | |
999 | gcc_assert (code->expr2->expr_type == EXPR_VARIABLE); | |
1000 | gfc_init_se (&argse, NULL); | |
1001 | gfc_conv_expr_val (&argse, code->expr2); | |
1002 | stat = argse.expr; | |
1003 | } | |
1004 | else if (flag_coarray == GFC_FCOARRAY_LIB) | |
1005 | stat = null_pointer_node; | |
1006 | ||
1007 | if (code->expr4) | |
1008 | { | |
1009 | gfc_init_se (&argse, NULL); | |
1010 | gfc_conv_expr_val (&argse, code->expr4); | |
1011 | until_count = fold_convert (integer_type_node, argse.expr); | |
1012 | } | |
1013 | else | |
1014 | until_count = integer_one_node; | |
1015 | ||
1016 | if (flag_coarray != GFC_FCOARRAY_LIB) | |
1017 | { | |
1018 | gfc_start_block (&se.pre); | |
1019 | gfc_init_se (&argse, NULL); | |
1020 | gfc_conv_expr_val (&argse, code->expr1); | |
1021 | ||
1022 | if (op == EXEC_EVENT_POST) | |
1023 | gfc_add_modify (&se.pre, argse.expr, | |
1024 | fold_build2_loc (input_location, PLUS_EXPR, | |
1025 | TREE_TYPE (argse.expr), argse.expr, | |
1026 | build_int_cst (TREE_TYPE (argse.expr), 1))); | |
1027 | else | |
1028 | gfc_add_modify (&se.pre, argse.expr, | |
1029 | fold_build2_loc (input_location, MINUS_EXPR, | |
1030 | TREE_TYPE (argse.expr), argse.expr, | |
1031 | fold_convert (TREE_TYPE (argse.expr), | |
1032 | until_count))); | |
1033 | if (stat != NULL_TREE) | |
1034 | gfc_add_modify (&se.pre, stat, build_int_cst (TREE_TYPE (stat), 0)); | |
1035 | ||
1036 | return gfc_finish_block (&se.pre); | |
1037 | } | |
1038 | ||
1039 | gfc_start_block (&se.pre); | |
1040 | tree tmp, token, image_index, errmsg, errmsg_len; | |
1041 | tree index = size_zero_node; | |
1042 | tree caf_decl = gfc_get_tree_for_caf_expr (code->expr1); | |
1043 | ||
1044 | if (code->expr1->symtree->n.sym->ts.type != BT_DERIVED | |
1045 | || code->expr1->symtree->n.sym->ts.u.derived->from_intmod | |
1046 | != INTMOD_ISO_FORTRAN_ENV | |
1047 | || code->expr1->symtree->n.sym->ts.u.derived->intmod_sym_id | |
1048 | != ISOFORTRAN_EVENT_TYPE) | |
1049 | { | |
1050 | gfc_error ("Sorry, the event component of derived type at %L is not " | |
1051 | "yet supported", &code->expr1->where); | |
1052 | return NULL_TREE; | |
1053 | } | |
1054 | ||
3c9f5092 AV |
1055 | gfc_init_se (&argse, NULL); |
1056 | gfc_get_caf_token_offset (&argse, &token, NULL, caf_decl, NULL_TREE, | |
1057 | code->expr1); | |
1058 | gfc_add_block_to_block (&se.pre, &argse.pre); | |
5df445a2 TB |
1059 | |
1060 | if (gfc_is_coindexed (code->expr1)) | |
1061 | image_index = gfc_caf_get_image_index (&se.pre, code->expr1, caf_decl); | |
1062 | else | |
1063 | image_index = integer_zero_node; | |
1064 | ||
1065 | /* For arrays, obtain the array index. */ | |
1066 | if (gfc_expr_attr (code->expr1).dimension) | |
1067 | { | |
1068 | tree desc, tmp, extent, lbound, ubound; | |
1069 | gfc_array_ref *ar, ar2; | |
1070 | int i; | |
1071 | ||
1072 | /* TODO: Extend this, once DT components are supported. */ | |
1073 | ar = &code->expr1->ref->u.ar; | |
1074 | ar2 = *ar; | |
1075 | memset (ar, '\0', sizeof (*ar)); | |
1076 | ar->as = ar2.as; | |
1077 | ar->type = AR_FULL; | |
1078 | ||
1079 | gfc_init_se (&argse, NULL); | |
1080 | argse.descriptor_only = 1; | |
1081 | gfc_conv_expr_descriptor (&argse, code->expr1); | |
1082 | gfc_add_block_to_block (&se.pre, &argse.pre); | |
1083 | desc = argse.expr; | |
1084 | *ar = ar2; | |
1085 | ||
1086 | extent = integer_one_node; | |
1087 | for (i = 0; i < ar->dimen; i++) | |
1088 | { | |
1089 | gfc_init_se (&argse, NULL); | |
1090 | gfc_conv_expr_type (&argse, ar->start[i], integer_type_node); | |
1091 | gfc_add_block_to_block (&argse.pre, &argse.pre); | |
1092 | lbound = gfc_conv_descriptor_lbound_get (desc, gfc_rank_cst[i]); | |
1093 | tmp = fold_build2_loc (input_location, MINUS_EXPR, | |
1094 | integer_type_node, argse.expr, | |
1095 | fold_convert(integer_type_node, lbound)); | |
1096 | tmp = fold_build2_loc (input_location, MULT_EXPR, | |
1097 | integer_type_node, extent, tmp); | |
1098 | index = fold_build2_loc (input_location, PLUS_EXPR, | |
cbd29d0e AS |
1099 | gfc_array_index_type, index, |
1100 | fold_convert (gfc_array_index_type, tmp)); | |
5df445a2 TB |
1101 | if (i < ar->dimen - 1) |
1102 | { | |
1103 | ubound = gfc_conv_descriptor_ubound_get (desc, gfc_rank_cst[i]); | |
1104 | tmp = gfc_conv_array_extent_dim (lbound, ubound, NULL); | |
1105 | tmp = fold_convert (integer_type_node, tmp); | |
1106 | extent = fold_build2_loc (input_location, MULT_EXPR, | |
1107 | integer_type_node, extent, tmp); | |
1108 | } | |
1109 | } | |
1110 | } | |
1111 | ||
1112 | /* errmsg. */ | |
1113 | if (code->expr3) | |
1114 | { | |
1115 | gfc_init_se (&argse, NULL); | |
1116 | argse.want_pointer = 1; | |
1117 | gfc_conv_expr (&argse, code->expr3); | |
1118 | gfc_add_block_to_block (&se.pre, &argse.pre); | |
1119 | errmsg = argse.expr; | |
3f5fabc0 | 1120 | errmsg_len = fold_convert (size_type_node, argse.string_length); |
5df445a2 TB |
1121 | } |
1122 | else | |
1123 | { | |
1124 | errmsg = null_pointer_node; | |
3f5fabc0 | 1125 | errmsg_len = build_zero_cst (size_type_node); |
5df445a2 TB |
1126 | } |
1127 | ||
1128 | if (stat != null_pointer_node && TREE_TYPE (stat) != integer_type_node) | |
1129 | { | |
1130 | stat2 = stat; | |
1131 | stat = gfc_create_var (integer_type_node, "stat"); | |
1132 | } | |
1133 | ||
cbd29d0e | 1134 | index = fold_convert (size_type_node, index); |
5df445a2 TB |
1135 | if (op == EXEC_EVENT_POST) |
1136 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_event_post, 6, | |
1137 | token, index, image_index, | |
1138 | stat != null_pointer_node | |
1139 | ? gfc_build_addr_expr (NULL, stat) : stat, | |
1140 | errmsg, errmsg_len); | |
1141 | else | |
1142 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_event_wait, 6, | |
1143 | token, index, until_count, | |
1144 | stat != null_pointer_node | |
1145 | ? gfc_build_addr_expr (NULL, stat) : stat, | |
1146 | errmsg, errmsg_len); | |
1147 | gfc_add_expr_to_block (&se.pre, tmp); | |
1148 | ||
985f6c79 TB |
1149 | /* It guarantees memory consistency within the same segment */ |
1150 | tmp = gfc_build_string_const (strlen ("memory")+1, "memory"), | |
1151 | tmp = build5_loc (input_location, ASM_EXPR, void_type_node, | |
1152 | gfc_build_string_const (1, ""), NULL_TREE, NULL_TREE, | |
1153 | tree_cons (NULL_TREE, tmp, NULL_TREE), NULL_TREE); | |
1154 | ASM_VOLATILE_P (tmp) = 1; | |
1155 | gfc_add_expr_to_block (&se.pre, tmp); | |
1156 | ||
5df445a2 TB |
1157 | if (stat2 != NULL_TREE) |
1158 | gfc_add_modify (&se.pre, stat2, fold_convert (TREE_TYPE (stat2), stat)); | |
1159 | ||
1160 | return gfc_finish_block (&se.pre); | |
1161 | } | |
fea54935 | 1162 | |
d0a4a61c | 1163 | tree |
60386f50 | 1164 | gfc_trans_sync (gfc_code *code, gfc_exec_op type) |
d0a4a61c | 1165 | { |
60386f50 TB |
1166 | gfc_se se, argse; |
1167 | tree tmp; | |
1168 | tree images = NULL_TREE, stat = NULL_TREE, | |
1169 | errmsg = NULL_TREE, errmsglen = NULL_TREE; | |
d0a4a61c | 1170 | |
60386f50 TB |
1171 | /* Short cut: For single images without bound checking or without STAT=, |
1172 | return early. (ERRMSG= is always untouched for -fcoarray=single.) */ | |
1173 | if (!code->expr2 && !(gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) | |
f19626cf | 1174 | && flag_coarray != GFC_FCOARRAY_LIB) |
8b704316 | 1175 | return NULL_TREE; |
60386f50 TB |
1176 | |
1177 | gfc_init_se (&se, NULL); | |
1178 | gfc_start_block (&se.pre); | |
1179 | ||
1180 | if (code->expr1 && code->expr1->rank == 0) | |
d0a4a61c | 1181 | { |
60386f50 TB |
1182 | gfc_init_se (&argse, NULL); |
1183 | gfc_conv_expr_val (&argse, code->expr1); | |
1184 | images = argse.expr; | |
1185 | } | |
1186 | ||
1187 | if (code->expr2) | |
1188 | { | |
1189 | gcc_assert (code->expr2->expr_type == EXPR_VARIABLE); | |
1190 | gfc_init_se (&argse, NULL); | |
1191 | gfc_conv_expr_val (&argse, code->expr2); | |
1192 | stat = argse.expr; | |
1193 | } | |
f5c01f5b DC |
1194 | else |
1195 | stat = null_pointer_node; | |
60386f50 | 1196 | |
9315dff0 | 1197 | if (code->expr3 && flag_coarray == GFC_FCOARRAY_LIB) |
60386f50 TB |
1198 | { |
1199 | gcc_assert (code->expr3->expr_type == EXPR_VARIABLE); | |
1200 | gfc_init_se (&argse, NULL); | |
5df445a2 | 1201 | argse.want_pointer = 1; |
60386f50 TB |
1202 | gfc_conv_expr (&argse, code->expr3); |
1203 | gfc_conv_string_parameter (&argse); | |
f5c01f5b | 1204 | errmsg = gfc_build_addr_expr (NULL, argse.expr); |
3f5fabc0 | 1205 | errmsglen = fold_convert (size_type_node, argse.string_length); |
60386f50 | 1206 | } |
9315dff0 | 1207 | else if (flag_coarray == GFC_FCOARRAY_LIB) |
60386f50 TB |
1208 | { |
1209 | errmsg = null_pointer_node; | |
3f5fabc0 | 1210 | errmsglen = build_int_cst (size_type_node, 0); |
d0a4a61c TB |
1211 | } |
1212 | ||
1213 | /* Check SYNC IMAGES(imageset) for valid image index. | |
1cc0e193 | 1214 | FIXME: Add a check for image-set arrays. */ |
d0a4a61c TB |
1215 | if (code->expr1 && (gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) |
1216 | && code->expr1->rank == 0) | |
1217 | { | |
1218 | tree cond; | |
f19626cf | 1219 | if (flag_coarray != GFC_FCOARRAY_LIB) |
63ee5404 | 1220 | cond = fold_build2_loc (input_location, NE_EXPR, logical_type_node, |
60386f50 TB |
1221 | images, build_int_cst (TREE_TYPE (images), 1)); |
1222 | else | |
1223 | { | |
1224 | tree cond2; | |
a8a5f4a9 TB |
1225 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_num_images, |
1226 | 2, integer_zero_node, | |
1227 | build_int_cst (integer_type_node, -1)); | |
63ee5404 | 1228 | cond = fold_build2_loc (input_location, GT_EXPR, logical_type_node, |
a8a5f4a9 | 1229 | images, tmp); |
63ee5404 | 1230 | cond2 = fold_build2_loc (input_location, LT_EXPR, logical_type_node, |
60386f50 TB |
1231 | images, |
1232 | build_int_cst (TREE_TYPE (images), 1)); | |
45d5889a | 1233 | cond = fold_build2_loc (input_location, TRUTH_OR_EXPR, |
63ee5404 | 1234 | logical_type_node, cond, cond2); |
60386f50 | 1235 | } |
d0a4a61c TB |
1236 | gfc_trans_runtime_check (true, false, cond, &se.pre, |
1237 | &code->expr1->where, "Invalid image number " | |
1238 | "%d in SYNC IMAGES", | |
74c49505 | 1239 | fold_convert (integer_type_node, images)); |
d0a4a61c TB |
1240 | } |
1241 | ||
985f6c79 TB |
1242 | /* Per F2008, 8.5.1, a SYNC MEMORY is implied by calling the |
1243 | image control statements SYNC IMAGES and SYNC ALL. */ | |
1244 | if (flag_coarray == GFC_FCOARRAY_LIB) | |
1245 | { | |
1246 | tmp = gfc_build_string_const (strlen ("memory")+1, "memory"), | |
1247 | tmp = build5_loc (input_location, ASM_EXPR, void_type_node, | |
1248 | gfc_build_string_const (1, ""), NULL_TREE, NULL_TREE, | |
1249 | tree_cons (NULL_TREE, tmp, NULL_TREE), NULL_TREE); | |
1250 | ASM_VOLATILE_P (tmp) = 1; | |
1251 | gfc_add_expr_to_block (&se.pre, tmp); | |
1252 | } | |
1253 | ||
9315dff0 | 1254 | if (flag_coarray != GFC_FCOARRAY_LIB) |
d0a4a61c | 1255 | { |
60386f50 TB |
1256 | /* Set STAT to zero. */ |
1257 | if (code->expr2) | |
1258 | gfc_add_modify (&se.pre, stat, build_int_cst (TREE_TYPE (stat), 0)); | |
1259 | } | |
9315dff0 | 1260 | else if (type == EXEC_SYNC_ALL || type == EXEC_SYNC_MEMORY) |
60386f50 | 1261 | { |
f5c01f5b DC |
1262 | /* SYNC ALL => stat == null_pointer_node |
1263 | SYNC ALL(stat=s) => stat has an integer type | |
1264 | ||
1265 | If "stat" has the wrong integer type, use a temp variable of | |
1266 | the right type and later cast the result back into "stat". */ | |
1267 | if (stat == null_pointer_node || TREE_TYPE (stat) == integer_type_node) | |
1268 | { | |
1269 | if (TREE_TYPE (stat) == integer_type_node) | |
1270 | stat = gfc_build_addr_expr (NULL, stat); | |
8b704316 | 1271 | |
9315dff0 AF |
1272 | if(type == EXEC_SYNC_MEMORY) |
1273 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_sync_memory, | |
1274 | 3, stat, errmsg, errmsglen); | |
1275 | else | |
1276 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_sync_all, | |
1277 | 3, stat, errmsg, errmsglen); | |
1278 | ||
f5c01f5b DC |
1279 | gfc_add_expr_to_block (&se.pre, tmp); |
1280 | } | |
60386f50 | 1281 | else |
f5c01f5b DC |
1282 | { |
1283 | tree tmp_stat = gfc_create_var (integer_type_node, "stat"); | |
1284 | ||
1285 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_sync_all, | |
1286 | 3, gfc_build_addr_expr (NULL, tmp_stat), | |
1287 | errmsg, errmsglen); | |
1288 | gfc_add_expr_to_block (&se.pre, tmp); | |
8b704316 | 1289 | |
f5c01f5b DC |
1290 | gfc_add_modify (&se.pre, stat, |
1291 | fold_convert (TREE_TYPE (stat), tmp_stat)); | |
1292 | } | |
60386f50 TB |
1293 | } |
1294 | else | |
1295 | { | |
1296 | tree len; | |
1297 | ||
1298 | gcc_assert (type == EXEC_SYNC_IMAGES); | |
1299 | ||
1300 | if (!code->expr1) | |
1301 | { | |
1302 | len = build_int_cst (integer_type_node, -1); | |
1303 | images = null_pointer_node; | |
1304 | } | |
1305 | else if (code->expr1->rank == 0) | |
1306 | { | |
1307 | len = build_int_cst (integer_type_node, 1); | |
1308 | images = gfc_build_addr_expr (NULL_TREE, images); | |
1309 | } | |
1310 | else | |
1311 | { | |
1312 | /* FIXME. */ | |
1313 | if (code->expr1->ts.kind != gfc_c_int_kind) | |
29e0597e TB |
1314 | gfc_fatal_error ("Sorry, only support for integer kind %d " |
1315 | "implemented for image-set at %L", | |
1316 | gfc_c_int_kind, &code->expr1->where); | |
60386f50 | 1317 | |
2960a368 | 1318 | gfc_conv_array_parameter (&se, code->expr1, true, NULL, NULL, &len); |
60386f50 TB |
1319 | images = se.expr; |
1320 | ||
1321 | tmp = gfc_typenode_for_spec (&code->expr1->ts); | |
1322 | if (GFC_ARRAY_TYPE_P (tmp) || GFC_DESCRIPTOR_TYPE_P (tmp)) | |
1323 | tmp = gfc_get_element_type (tmp); | |
1324 | ||
1325 | len = fold_build2_loc (input_location, TRUNC_DIV_EXPR, | |
1326 | TREE_TYPE (len), len, | |
1327 | fold_convert (TREE_TYPE (len), | |
1328 | TYPE_SIZE_UNIT (tmp))); | |
1329 | len = fold_convert (integer_type_node, len); | |
1330 | } | |
1331 | ||
f5c01f5b DC |
1332 | /* SYNC IMAGES(imgs) => stat == null_pointer_node |
1333 | SYNC IMAGES(imgs,stat=s) => stat has an integer type | |
1334 | ||
1335 | If "stat" has the wrong integer type, use a temp variable of | |
1336 | the right type and later cast the result back into "stat". */ | |
1337 | if (stat == null_pointer_node || TREE_TYPE (stat) == integer_type_node) | |
1338 | { | |
1339 | if (TREE_TYPE (stat) == integer_type_node) | |
1340 | stat = gfc_build_addr_expr (NULL, stat); | |
1341 | ||
8b704316 | 1342 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_sync_images, |
f5c01f5b DC |
1343 | 5, fold_convert (integer_type_node, len), |
1344 | images, stat, errmsg, errmsglen); | |
1345 | gfc_add_expr_to_block (&se.pre, tmp); | |
1346 | } | |
60386f50 | 1347 | else |
f5c01f5b DC |
1348 | { |
1349 | tree tmp_stat = gfc_create_var (integer_type_node, "stat"); | |
1350 | ||
8b704316 | 1351 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_sync_images, |
f5c01f5b DC |
1352 | 5, fold_convert (integer_type_node, len), |
1353 | images, gfc_build_addr_expr (NULL, tmp_stat), | |
1354 | errmsg, errmsglen); | |
1355 | gfc_add_expr_to_block (&se.pre, tmp); | |
1356 | ||
8b704316 | 1357 | gfc_add_modify (&se.pre, stat, |
f5c01f5b DC |
1358 | fold_convert (TREE_TYPE (stat), tmp_stat)); |
1359 | } | |
d0a4a61c TB |
1360 | } |
1361 | ||
60386f50 | 1362 | return gfc_finish_block (&se.pre); |
d0a4a61c TB |
1363 | } |
1364 | ||
1365 | ||
6de9cd9a DN |
1366 | /* Generate GENERIC for the IF construct. This function also deals with |
1367 | the simple IF statement, because the front end translates the IF | |
1368 | statement into an IF construct. | |
1369 | ||
1370 | We translate: | |
1371 | ||
1372 | IF (cond) THEN | |
1373 | then_clause | |
1374 | ELSEIF (cond2) | |
1375 | elseif_clause | |
1376 | ELSE | |
1377 | else_clause | |
1378 | ENDIF | |
1379 | ||
1380 | into: | |
1381 | ||
1382 | pre_cond_s; | |
1383 | if (cond_s) | |
1384 | { | |
1385 | then_clause; | |
1386 | } | |
1387 | else | |
1388 | { | |
1389 | pre_cond_s | |
1390 | if (cond_s) | |
1391 | { | |
1392 | elseif_clause | |
1393 | } | |
1394 | else | |
1395 | { | |
1396 | else_clause; | |
1397 | } | |
1398 | } | |
1399 | ||
1400 | where COND_S is the simplified version of the predicate. PRE_COND_S | |
1401 | are the pre side-effects produced by the translation of the | |
1402 | conditional. | |
1403 | We need to build the chain recursively otherwise we run into | |
1404 | problems with folding incomplete statements. */ | |
1405 | ||
1406 | static tree | |
1407 | gfc_trans_if_1 (gfc_code * code) | |
1408 | { | |
1409 | gfc_se if_se; | |
1410 | tree stmt, elsestmt; | |
e84589e1 | 1411 | locus saved_loc; |
55bd9c35 | 1412 | location_t loc; |
6de9cd9a DN |
1413 | |
1414 | /* Check for an unconditional ELSE clause. */ | |
a513927a | 1415 | if (!code->expr1) |
6de9cd9a DN |
1416 | return gfc_trans_code (code->next); |
1417 | ||
1418 | /* Initialize a statement builder for each block. Puts in NULL_TREEs. */ | |
1419 | gfc_init_se (&if_se, NULL); | |
1420 | gfc_start_block (&if_se.pre); | |
1421 | ||
1422 | /* Calculate the IF condition expression. */ | |
e84589e1 TB |
1423 | if (code->expr1->where.lb) |
1424 | { | |
1425 | gfc_save_backend_locus (&saved_loc); | |
1426 | gfc_set_backend_locus (&code->expr1->where); | |
1427 | } | |
1428 | ||
a513927a | 1429 | gfc_conv_expr_val (&if_se, code->expr1); |
6de9cd9a | 1430 | |
e84589e1 TB |
1431 | if (code->expr1->where.lb) |
1432 | gfc_restore_backend_locus (&saved_loc); | |
1433 | ||
6de9cd9a DN |
1434 | /* Translate the THEN clause. */ |
1435 | stmt = gfc_trans_code (code->next); | |
1436 | ||
1437 | /* Translate the ELSE clause. */ | |
1438 | if (code->block) | |
1439 | elsestmt = gfc_trans_if_1 (code->block); | |
1440 | else | |
c2255bc4 | 1441 | elsestmt = build_empty_stmt (input_location); |
6de9cd9a DN |
1442 | |
1443 | /* Build the condition expression and add it to the condition block. */ | |
55bd9c35 TB |
1444 | loc = code->expr1->where.lb ? code->expr1->where.lb->location : input_location; |
1445 | stmt = fold_build3_loc (loc, COND_EXPR, void_type_node, if_se.expr, stmt, | |
1446 | elsestmt); | |
8b704316 | 1447 | |
6de9cd9a DN |
1448 | gfc_add_expr_to_block (&if_se.pre, stmt); |
1449 | ||
1450 | /* Finish off this statement. */ | |
1451 | return gfc_finish_block (&if_se.pre); | |
1452 | } | |
1453 | ||
1454 | tree | |
1455 | gfc_trans_if (gfc_code * code) | |
1456 | { | |
e5ca9693 DK |
1457 | stmtblock_t body; |
1458 | tree exit_label; | |
1459 | ||
1460 | /* Create exit label so it is available for trans'ing the body code. */ | |
1461 | exit_label = gfc_build_label_decl (NULL_TREE); | |
1462 | code->exit_label = exit_label; | |
1463 | ||
1464 | /* Translate the actual code in code->block. */ | |
1465 | gfc_init_block (&body); | |
1466 | gfc_add_expr_to_block (&body, gfc_trans_if_1 (code->block)); | |
1467 | ||
1468 | /* Add exit label. */ | |
1469 | gfc_add_expr_to_block (&body, build1_v (LABEL_EXPR, exit_label)); | |
6de9cd9a | 1470 | |
e5ca9693 | 1471 | return gfc_finish_block (&body); |
6de9cd9a DN |
1472 | } |
1473 | ||
1474 | ||
fa951694 | 1475 | /* Translate an arithmetic IF expression. |
6de9cd9a DN |
1476 | |
1477 | IF (cond) label1, label2, label3 translates to | |
1478 | ||
1479 | if (cond <= 0) | |
1480 | { | |
1481 | if (cond < 0) | |
1482 | goto label1; | |
1483 | else // cond == 0 | |
1484 | goto label2; | |
1485 | } | |
1486 | else // cond > 0 | |
1487 | goto label3; | |
442c1644 CY |
1488 | |
1489 | An optimized version can be generated in case of equal labels. | |
1490 | E.g., if label1 is equal to label2, we can translate it to | |
1491 | ||
1492 | if (cond <= 0) | |
1493 | goto label1; | |
1494 | else | |
1495 | goto label3; | |
6de9cd9a DN |
1496 | */ |
1497 | ||
1498 | tree | |
1499 | gfc_trans_arithmetic_if (gfc_code * code) | |
1500 | { | |
1501 | gfc_se se; | |
1502 | tree tmp; | |
1503 | tree branch1; | |
1504 | tree branch2; | |
1505 | tree zero; | |
1506 | ||
1507 | /* Start a new block. */ | |
1508 | gfc_init_se (&se, NULL); | |
1509 | gfc_start_block (&se.pre); | |
1510 | ||
1511 | /* Pre-evaluate COND. */ | |
a513927a | 1512 | gfc_conv_expr_val (&se, code->expr1); |
5ec1334b | 1513 | se.expr = gfc_evaluate_now (se.expr, &se.pre); |
6de9cd9a DN |
1514 | |
1515 | /* Build something to compare with. */ | |
1516 | zero = gfc_build_const (TREE_TYPE (se.expr), integer_zero_node); | |
1517 | ||
79bd1948 | 1518 | if (code->label1->value != code->label2->value) |
442c1644 CY |
1519 | { |
1520 | /* If (cond < 0) take branch1 else take branch2. | |
1521 | First build jumps to the COND .LT. 0 and the COND .EQ. 0 cases. */ | |
79bd1948 | 1522 | branch1 = build1_v (GOTO_EXPR, gfc_get_label_decl (code->label1)); |
442c1644 CY |
1523 | branch2 = build1_v (GOTO_EXPR, gfc_get_label_decl (code->label2)); |
1524 | ||
79bd1948 | 1525 | if (code->label1->value != code->label3->value) |
63ee5404 | 1526 | tmp = fold_build2_loc (input_location, LT_EXPR, logical_type_node, |
bc98ed60 | 1527 | se.expr, zero); |
442c1644 | 1528 | else |
63ee5404 | 1529 | tmp = fold_build2_loc (input_location, NE_EXPR, logical_type_node, |
bc98ed60 | 1530 | se.expr, zero); |
6de9cd9a | 1531 | |
bc98ed60 TB |
1532 | branch1 = fold_build3_loc (input_location, COND_EXPR, void_type_node, |
1533 | tmp, branch1, branch2); | |
442c1644 CY |
1534 | } |
1535 | else | |
79bd1948 | 1536 | branch1 = build1_v (GOTO_EXPR, gfc_get_label_decl (code->label1)); |
6de9cd9a | 1537 | |
79bd1948 | 1538 | if (code->label1->value != code->label3->value |
442c1644 CY |
1539 | && code->label2->value != code->label3->value) |
1540 | { | |
1541 | /* if (cond <= 0) take branch1 else take branch2. */ | |
1542 | branch2 = build1_v (GOTO_EXPR, gfc_get_label_decl (code->label3)); | |
63ee5404 | 1543 | tmp = fold_build2_loc (input_location, LE_EXPR, logical_type_node, |
bc98ed60 TB |
1544 | se.expr, zero); |
1545 | branch1 = fold_build3_loc (input_location, COND_EXPR, void_type_node, | |
1546 | tmp, branch1, branch2); | |
442c1644 | 1547 | } |
6de9cd9a DN |
1548 | |
1549 | /* Append the COND_EXPR to the evaluation of COND, and return. */ | |
1550 | gfc_add_expr_to_block (&se.pre, branch1); | |
1551 | return gfc_finish_block (&se.pre); | |
1552 | } | |
1553 | ||
1554 | ||
1cc0e193 | 1555 | /* Translate a CRITICAL block. */ |
d0a4a61c TB |
1556 | tree |
1557 | gfc_trans_critical (gfc_code *code) | |
1558 | { | |
1559 | stmtblock_t block; | |
bc0229f9 | 1560 | tree tmp, token = NULL_TREE; |
d0a4a61c TB |
1561 | |
1562 | gfc_start_block (&block); | |
60386f50 | 1563 | |
f19626cf | 1564 | if (flag_coarray == GFC_FCOARRAY_LIB) |
60386f50 | 1565 | { |
bc0229f9 TB |
1566 | token = gfc_get_symbol_decl (code->resolved_sym); |
1567 | token = GFC_TYPE_ARRAY_CAF_TOKEN (TREE_TYPE (token)); | |
1568 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_lock, 7, | |
1569 | token, integer_zero_node, integer_one_node, | |
9de8e7af | 1570 | null_pointer_node, null_pointer_node, |
bc0229f9 | 1571 | null_pointer_node, integer_zero_node); |
60386f50 | 1572 | gfc_add_expr_to_block (&block, tmp); |
985f6c79 TB |
1573 | |
1574 | /* It guarantees memory consistency within the same segment */ | |
1575 | tmp = gfc_build_string_const (strlen ("memory")+1, "memory"), | |
1576 | tmp = build5_loc (input_location, ASM_EXPR, void_type_node, | |
1577 | gfc_build_string_const (1, ""), | |
1578 | NULL_TREE, NULL_TREE, | |
1579 | tree_cons (NULL_TREE, tmp, NULL_TREE), | |
1580 | NULL_TREE); | |
1581 | ASM_VOLATILE_P (tmp) = 1; | |
afbc5ae8 | 1582 | |
985f6c79 | 1583 | gfc_add_expr_to_block (&block, tmp); |
60386f50 TB |
1584 | } |
1585 | ||
d0a4a61c TB |
1586 | tmp = gfc_trans_code (code->block->next); |
1587 | gfc_add_expr_to_block (&block, tmp); | |
1588 | ||
f19626cf | 1589 | if (flag_coarray == GFC_FCOARRAY_LIB) |
60386f50 | 1590 | { |
bc0229f9 TB |
1591 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_unlock, 6, |
1592 | token, integer_zero_node, integer_one_node, | |
1593 | null_pointer_node, null_pointer_node, | |
1594 | integer_zero_node); | |
60386f50 | 1595 | gfc_add_expr_to_block (&block, tmp); |
60386f50 | 1596 | |
985f6c79 TB |
1597 | /* It guarantees memory consistency within the same segment */ |
1598 | tmp = gfc_build_string_const (strlen ("memory")+1, "memory"), | |
1599 | tmp = build5_loc (input_location, ASM_EXPR, void_type_node, | |
1600 | gfc_build_string_const (1, ""), | |
1601 | NULL_TREE, NULL_TREE, | |
1602 | tree_cons (NULL_TREE, tmp, NULL_TREE), | |
1603 | NULL_TREE); | |
1604 | ASM_VOLATILE_P (tmp) = 1; | |
1605 | ||
1606 | gfc_add_expr_to_block (&block, tmp); | |
1607 | } | |
60386f50 | 1608 | |
d0a4a61c TB |
1609 | return gfc_finish_block (&block); |
1610 | } | |
1611 | ||
1612 | ||
5b384b3d PT |
1613 | /* Return true, when the class has a _len component. */ |
1614 | ||
1615 | static bool | |
1616 | class_has_len_component (gfc_symbol *sym) | |
1617 | { | |
1618 | gfc_component *comp = sym->ts.u.derived->components; | |
1619 | while (comp) | |
1620 | { | |
1621 | if (strcmp (comp->name, "_len") == 0) | |
1622 | return true; | |
1623 | comp = comp->next; | |
1624 | } | |
1625 | return false; | |
1626 | } | |
1627 | ||
1628 | ||
6312ef45 JW |
1629 | /* Do proper initialization for ASSOCIATE names. */ |
1630 | ||
1631 | static void | |
1632 | trans_associate_var (gfc_symbol *sym, gfc_wrapped_block *block) | |
1633 | { | |
1634 | gfc_expr *e; | |
1635 | tree tmp; | |
c49ea23d | 1636 | bool class_target; |
8b704316 | 1637 | bool unlimited; |
8f75db9f PT |
1638 | tree desc; |
1639 | tree offset; | |
1640 | tree dim; | |
1641 | int n; | |
5b384b3d PT |
1642 | tree charlen; |
1643 | bool need_len_assign; | |
ff3598bc PT |
1644 | bool whole_array = true; |
1645 | gfc_ref *ref; | |
707905d0 | 1646 | symbol_attribute attr; |
6312ef45 JW |
1647 | |
1648 | gcc_assert (sym->assoc); | |
1649 | e = sym->assoc->target; | |
1650 | ||
c49ea23d PT |
1651 | class_target = (e->expr_type == EXPR_VARIABLE) |
1652 | && (gfc_is_class_scalar_expr (e) | |
1653 | || gfc_is_class_array_ref (e, NULL)); | |
1654 | ||
8b704316 PT |
1655 | unlimited = UNLIMITED_POLY (e); |
1656 | ||
ff3598bc PT |
1657 | for (ref = e->ref; ref; ref = ref->next) |
1658 | if (ref->type == REF_ARRAY | |
1659 | && ref->u.ar.type == AR_FULL | |
1660 | && ref->next) | |
1661 | { | |
1662 | whole_array = false; | |
1663 | break; | |
1664 | } | |
1665 | ||
5b384b3d PT |
1666 | /* Assignments to the string length need to be generated, when |
1667 | ( sym is a char array or | |
1668 | sym has a _len component) | |
1669 | and the associated expression is unlimited polymorphic, which is | |
1670 | not (yet) correctly in 'unlimited', because for an already associated | |
1671 | BT_DERIVED the u-poly flag is not set, i.e., | |
1672 | __tmp_CHARACTER_0_1 => w => arg | |
1673 | ^ generated temp ^ from code, the w does not have the u-poly | |
1674 | flag set, where UNLIMITED_POLY(e) expects it. */ | |
1675 | need_len_assign = ((unlimited || (e->ts.type == BT_DERIVED | |
1676 | && e->ts.u.derived->attr.unlimited_polymorphic)) | |
1677 | && (sym->ts.type == BT_CHARACTER | |
1678 | || ((sym->ts.type == BT_CLASS || sym->ts.type == BT_DERIVED) | |
1679 | && class_has_len_component (sym)))); | |
6312ef45 JW |
1680 | /* Do a `pointer assignment' with updated descriptor (or assign descriptor |
1681 | to array temporary) for arrays with either unknown shape or if associating | |
1682 | to a variable. */ | |
c49ea23d | 1683 | if (sym->attr.dimension && !class_target |
6312ef45 JW |
1684 | && (sym->as->type == AS_DEFERRED || sym->assoc->variable)) |
1685 | { | |
1686 | gfc_se se; | |
6312ef45 | 1687 | tree desc; |
bcac046f | 1688 | bool cst_array_ctor; |
6312ef45 JW |
1689 | |
1690 | desc = sym->backend_decl; | |
bcac046f | 1691 | cst_array_ctor = e->expr_type == EXPR_ARRAY |
84ee745e PT |
1692 | && gfc_constant_array_constructor_p (e->value.constructor) |
1693 | && e->ts.type != BT_CHARACTER; | |
6312ef45 JW |
1694 | |
1695 | /* If association is to an expression, evaluate it and create temporary. | |
1696 | Otherwise, get descriptor of target for pointer assignment. */ | |
1697 | gfc_init_se (&se, NULL); | |
bcac046f | 1698 | if (sym->assoc->variable || cst_array_ctor) |
6312ef45 JW |
1699 | { |
1700 | se.direct_byref = 1; | |
1cf43a1d | 1701 | se.use_offset = 1; |
6312ef45 JW |
1702 | se.expr = desc; |
1703 | } | |
1cf43a1d | 1704 | |
2960a368 | 1705 | gfc_conv_expr_descriptor (&se, e); |
6312ef45 | 1706 | |
707905d0 PT |
1707 | if (sym->ts.type == BT_CHARACTER |
1708 | && sym->ts.deferred | |
1709 | && !sym->attr.select_type_temporary | |
1710 | && VAR_P (sym->ts.u.cl->backend_decl) | |
1711 | && se.string_length != sym->ts.u.cl->backend_decl) | |
1712 | { | |
1713 | gfc_add_modify (&se.pre, sym->ts.u.cl->backend_decl, | |
f622221a | 1714 | fold_convert (TREE_TYPE (sym->ts.u.cl->backend_decl), |
707905d0 PT |
1715 | se.string_length)); |
1716 | } | |
1717 | ||
6312ef45 JW |
1718 | /* If we didn't already do the pointer assignment, set associate-name |
1719 | descriptor to the one generated for the temporary. */ | |
ff3598bc PT |
1720 | if ((!sym->assoc->variable && !cst_array_ctor) |
1721 | || !whole_array) | |
6312ef45 JW |
1722 | { |
1723 | int dim; | |
1724 | ||
ff3598bc PT |
1725 | if (whole_array) |
1726 | gfc_add_modify (&se.pre, desc, se.expr); | |
6312ef45 JW |
1727 | |
1728 | /* The generated descriptor has lower bound zero (as array | |
1729 | temporary), shift bounds so we get lower bounds of 1. */ | |
1730 | for (dim = 0; dim < e->rank; ++dim) | |
1731 | gfc_conv_shift_descriptor_lbound (&se.pre, desc, | |
1732 | dim, gfc_index_one_node); | |
1733 | } | |
1734 | ||
68b1c5e1 PT |
1735 | /* If this is a subreference array pointer associate name use the |
1736 | associate variable element size for the value of 'span'. */ | |
1737 | if (sym->attr.subref_array_pointer) | |
1738 | { | |
1739 | gcc_assert (e->expr_type == EXPR_VARIABLE); | |
f82f425b PT |
1740 | tmp = gfc_get_array_span (se.expr, e); |
1741 | ||
ff3598bc | 1742 | gfc_conv_descriptor_span_set (&se.pre, desc, tmp); |
68b1c5e1 PT |
1743 | } |
1744 | ||
0b627b58 PT |
1745 | if (e->expr_type == EXPR_FUNCTION |
1746 | && sym->ts.type == BT_DERIVED | |
1747 | && sym->ts.u.derived | |
1748 | && sym->ts.u.derived->attr.pdt_type) | |
1749 | { | |
1750 | tmp = gfc_deallocate_pdt_comp (sym->ts.u.derived, se.expr, | |
1751 | sym->as->rank); | |
1752 | gfc_add_expr_to_block (&se.post, tmp); | |
1753 | } | |
1754 | ||
6312ef45 JW |
1755 | /* Done, register stuff as init / cleanup code. */ |
1756 | gfc_add_init_cleanup (block, gfc_finish_block (&se.pre), | |
1757 | gfc_finish_block (&se.post)); | |
1758 | } | |
1759 | ||
8b704316 PT |
1760 | /* Temporaries, arising from TYPE IS, just need the descriptor of class |
1761 | arrays to be assigned directly. */ | |
1762 | else if (class_target && sym->attr.dimension | |
1763 | && (sym->ts.type == BT_DERIVED || unlimited)) | |
c49ea23d PT |
1764 | { |
1765 | gfc_se se; | |
1766 | ||
1767 | gfc_init_se (&se, NULL); | |
102344e2 | 1768 | se.descriptor_only = 1; |
f3b0bb7a AV |
1769 | /* In a select type the (temporary) associate variable shall point to |
1770 | a standard fortran array (lower bound == 1), but conv_expr () | |
1771 | just maps to the input array in the class object, whose lbound may | |
1772 | be arbitrary. conv_expr_descriptor solves this by inserting a | |
1773 | temporary array descriptor. */ | |
1774 | gfc_conv_expr_descriptor (&se, e); | |
c49ea23d | 1775 | |
f3b0bb7a AV |
1776 | gcc_assert (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (se.expr)) |
1777 | || GFC_ARRAY_TYPE_P (TREE_TYPE (se.expr))); | |
c49ea23d PT |
1778 | gcc_assert (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (sym->backend_decl))); |
1779 | ||
f3b0bb7a AV |
1780 | if (GFC_ARRAY_TYPE_P (TREE_TYPE (se.expr))) |
1781 | { | |
1782 | if (INDIRECT_REF_P (se.expr)) | |
1783 | tmp = TREE_OPERAND (se.expr, 0); | |
1784 | else | |
1785 | tmp = se.expr; | |
1786 | ||
1787 | gfc_add_modify (&se.pre, sym->backend_decl, | |
1788 | gfc_class_data_get (GFC_DECL_SAVED_DESCRIPTOR (tmp))); | |
1789 | } | |
1790 | else | |
1791 | gfc_add_modify (&se.pre, sym->backend_decl, se.expr); | |
8b704316 PT |
1792 | |
1793 | if (unlimited) | |
1794 | { | |
1795 | /* Recover the dtype, which has been overwritten by the | |
1796 | assignment from an unlimited polymorphic object. */ | |
1797 | tmp = gfc_conv_descriptor_dtype (sym->backend_decl); | |
1798 | gfc_add_modify (&se.pre, tmp, | |
1799 | gfc_get_dtype (TREE_TYPE (sym->backend_decl))); | |
1800 | } | |
1801 | ||
f3b0bb7a | 1802 | gfc_add_init_cleanup (block, gfc_finish_block (&se.pre), |
c49ea23d PT |
1803 | gfc_finish_block (&se.post)); |
1804 | } | |
1805 | ||
6312ef45 JW |
1806 | /* Do a scalar pointer assignment; this is for scalar variable targets. */ |
1807 | else if (gfc_is_associate_pointer (sym)) | |
1808 | { | |
1809 | gfc_se se; | |
1810 | ||
1811 | gcc_assert (!sym->attr.dimension); | |
1812 | ||
1813 | gfc_init_se (&se, NULL); | |
8f75db9f PT |
1814 | |
1815 | /* Class associate-names come this way because they are | |
1816 | unconditionally associate pointers and the symbol is scalar. */ | |
1817 | if (sym->ts.type == BT_CLASS && CLASS_DATA (sym)->attr.dimension) | |
1818 | { | |
5b384b3d | 1819 | tree target_expr; |
8f75db9f | 1820 | /* For a class array we need a descriptor for the selector. */ |
2960a368 | 1821 | gfc_conv_expr_descriptor (&se, e); |
5b384b3d PT |
1822 | /* Needed to get/set the _len component below. */ |
1823 | target_expr = se.expr; | |
8f75db9f | 1824 | |
8b704316 | 1825 | /* Obtain a temporary class container for the result. */ |
16e82b25 | 1826 | gfc_conv_class_to_class (&se, e, sym->ts, false, true, false, false); |
8f75db9f PT |
1827 | se.expr = build_fold_indirect_ref_loc (input_location, se.expr); |
1828 | ||
1829 | /* Set the offset. */ | |
1830 | desc = gfc_class_data_get (se.expr); | |
1831 | offset = gfc_index_zero_node; | |
1832 | for (n = 0; n < e->rank; n++) | |
1833 | { | |
1834 | dim = gfc_rank_cst[n]; | |
1835 | tmp = fold_build2_loc (input_location, MULT_EXPR, | |
1836 | gfc_array_index_type, | |
1837 | gfc_conv_descriptor_stride_get (desc, dim), | |
1838 | gfc_conv_descriptor_lbound_get (desc, dim)); | |
1839 | offset = fold_build2_loc (input_location, MINUS_EXPR, | |
1840 | gfc_array_index_type, | |
1841 | offset, tmp); | |
1842 | } | |
5b384b3d PT |
1843 | if (need_len_assign) |
1844 | { | |
f3b0bb7a AV |
1845 | if (e->symtree |
1846 | && DECL_LANG_SPECIFIC (e->symtree->n.sym->backend_decl) | |
1847 | && GFC_DECL_SAVED_DESCRIPTOR (e->symtree->n.sym->backend_decl)) | |
1848 | /* Use the original class descriptor stored in the saved | |
1849 | descriptor to get the target_expr. */ | |
1850 | target_expr = | |
1851 | GFC_DECL_SAVED_DESCRIPTOR (e->symtree->n.sym->backend_decl); | |
1852 | else | |
1853 | /* Strip the _data component from the target_expr. */ | |
1854 | target_expr = TREE_OPERAND (target_expr, 0); | |
1855 | /* Add a reference to the _len comp to the target expr. */ | |
1856 | tmp = gfc_class_len_get (target_expr); | |
5b384b3d PT |
1857 | /* Get the component-ref for the temp structure's _len comp. */ |
1858 | charlen = gfc_class_len_get (se.expr); | |
026c3cfd | 1859 | /* Add the assign to the beginning of the block... */ |
5b384b3d PT |
1860 | gfc_add_modify (&se.pre, charlen, |
1861 | fold_convert (TREE_TYPE (charlen), tmp)); | |
1862 | /* and the oposite way at the end of the block, to hand changes | |
1863 | on the string length back. */ | |
1864 | gfc_add_modify (&se.post, tmp, | |
1865 | fold_convert (TREE_TYPE (tmp), charlen)); | |
1866 | /* Length assignment done, prevent adding it again below. */ | |
1867 | need_len_assign = false; | |
1868 | } | |
8f75db9f PT |
1869 | gfc_conv_descriptor_offset_set (&se.pre, desc, offset); |
1870 | } | |
1871 | else if (sym->ts.type == BT_CLASS && e->ts.type == BT_CLASS | |
1872 | && CLASS_DATA (e)->attr.dimension) | |
1873 | { | |
1874 | /* This is bound to be a class array element. */ | |
1875 | gfc_conv_expr_reference (&se, e); | |
8b704316 | 1876 | /* Get the _vptr component of the class object. */ |
8f75db9f PT |
1877 | tmp = gfc_get_vptr_from_expr (se.expr); |
1878 | /* Obtain a temporary class container for the result. */ | |
16e82b25 | 1879 | gfc_conv_derived_to_class (&se, e, sym->ts, tmp, false, false); |
8f75db9f PT |
1880 | se.expr = build_fold_indirect_ref_loc (input_location, se.expr); |
1881 | } | |
1882 | else | |
5b384b3d PT |
1883 | { |
1884 | /* For BT_CLASS and BT_DERIVED, this boils down to a pointer assign, | |
1885 | which has the string length included. For CHARACTERS it is still | |
1886 | needed and will be done at the end of this routine. */ | |
1887 | gfc_conv_expr (&se, e); | |
1888 | need_len_assign = need_len_assign && sym->ts.type == BT_CHARACTER; | |
1889 | } | |
6312ef45 | 1890 | |
707905d0 PT |
1891 | if (sym->ts.type == BT_CHARACTER |
1892 | && sym->ts.deferred | |
1893 | && !sym->attr.select_type_temporary | |
1894 | && VAR_P (sym->ts.u.cl->backend_decl) | |
1895 | && se.string_length != sym->ts.u.cl->backend_decl) | |
1896 | { | |
1897 | gfc_add_modify (&se.pre, sym->ts.u.cl->backend_decl, | |
f622221a | 1898 | fold_convert (TREE_TYPE (sym->ts.u.cl->backend_decl), |
707905d0 PT |
1899 | se.string_length)); |
1900 | if (e->expr_type == EXPR_FUNCTION) | |
1901 | { | |
1902 | tmp = gfc_call_free (sym->backend_decl); | |
1903 | gfc_add_expr_to_block (&se.post, tmp); | |
1904 | } | |
1905 | } | |
1906 | ||
1907 | attr = gfc_expr_attr (e); | |
1908 | if (sym->ts.type == BT_CHARACTER && e->ts.type == BT_CHARACTER | |
b14a13fa PT |
1909 | && (attr.allocatable || attr.pointer || attr.dummy) |
1910 | && POINTER_TYPE_P (TREE_TYPE (se.expr))) | |
707905d0 PT |
1911 | { |
1912 | /* These are pointer types already. */ | |
1913 | tmp = fold_convert (TREE_TYPE (sym->backend_decl), se.expr); | |
1914 | } | |
1915 | else | |
1916 | { | |
1917 | tmp = TREE_TYPE (sym->backend_decl); | |
1918 | tmp = gfc_build_addr_expr (tmp, se.expr); | |
1919 | } | |
1920 | ||
6312ef45 | 1921 | gfc_add_modify (&se.pre, sym->backend_decl, tmp); |
8b704316 | 1922 | |
6312ef45 JW |
1923 | gfc_add_init_cleanup (block, gfc_finish_block( &se.pre), |
1924 | gfc_finish_block (&se.post)); | |
1925 | } | |
1926 | ||
1927 | /* Do a simple assignment. This is for scalar expressions, where we | |
1928 | can simply use expression assignment. */ | |
1929 | else | |
1930 | { | |
1931 | gfc_expr *lhs; | |
0b627b58 | 1932 | tree res; |
a8399af8 PT |
1933 | gfc_se se; |
1934 | ||
1935 | gfc_init_se (&se, NULL); | |
1936 | ||
1937 | /* resolve.c converts some associate names to allocatable so that | |
1938 | allocation can take place automatically in gfc_trans_assignment. | |
1939 | The frontend prevents them from being either allocated, | |
1940 | deallocated or reallocated. */ | |
1941 | if (sym->attr.allocatable) | |
1942 | { | |
1943 | tmp = sym->backend_decl; | |
1944 | if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (tmp))) | |
1945 | tmp = gfc_conv_descriptor_data_get (tmp); | |
1946 | gfc_add_modify (&se.pre, tmp, fold_convert (TREE_TYPE (tmp), | |
1947 | null_pointer_node)); | |
1948 | } | |
6312ef45 JW |
1949 | |
1950 | lhs = gfc_lval_expr_from_sym (sym); | |
0b627b58 | 1951 | res = gfc_trans_assignment (lhs, e, false, true); |
a8399af8 | 1952 | gfc_add_expr_to_block (&se.pre, res); |
0b627b58 PT |
1953 | |
1954 | tmp = sym->backend_decl; | |
1955 | if (e->expr_type == EXPR_FUNCTION | |
1956 | && sym->ts.type == BT_DERIVED | |
1957 | && sym->ts.u.derived | |
1958 | && sym->ts.u.derived->attr.pdt_type) | |
1959 | { | |
1960 | tmp = gfc_deallocate_pdt_comp (sym->ts.u.derived, tmp, | |
1961 | 0); | |
1962 | } | |
1963 | else if (e->expr_type == EXPR_FUNCTION | |
1964 | && sym->ts.type == BT_CLASS | |
1965 | && CLASS_DATA (sym)->ts.u.derived | |
1966 | && CLASS_DATA (sym)->ts.u.derived->attr.pdt_type) | |
1967 | { | |
1968 | tmp = gfc_class_data_get (tmp); | |
1969 | tmp = gfc_deallocate_pdt_comp (CLASS_DATA (sym)->ts.u.derived, | |
1970 | tmp, 0); | |
1971 | } | |
a8399af8 PT |
1972 | else if (sym->attr.allocatable) |
1973 | { | |
1974 | tmp = sym->backend_decl; | |
1975 | ||
1976 | if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (tmp))) | |
1977 | tmp = gfc_conv_descriptor_data_get (tmp); | |
1978 | ||
1979 | /* A simple call to free suffices here. */ | |
1980 | tmp = gfc_call_free (tmp); | |
1981 | ||
1982 | /* Make sure that reallocation on assignment cannot occur. */ | |
1983 | sym->attr.allocatable = 0; | |
1984 | } | |
1985 | else | |
1986 | tmp = NULL_TREE; | |
0b627b58 | 1987 | |
a8399af8 | 1988 | res = gfc_finish_block (&se.pre); |
0b627b58 | 1989 | gfc_add_init_cleanup (block, res, tmp); |
a8399af8 | 1990 | gfc_free_expr (lhs); |
6312ef45 | 1991 | } |
8b704316 | 1992 | |
5b384b3d PT |
1993 | /* Set the stringlength, when needed. */ |
1994 | if (need_len_assign) | |
8b704316 | 1995 | { |
8b704316 PT |
1996 | gfc_se se; |
1997 | gfc_init_se (&se, NULL); | |
5b384b3d PT |
1998 | if (e->symtree->n.sym->ts.type == BT_CHARACTER) |
1999 | { | |
707905d0 | 2000 | /* Deferred strings are dealt with in the preceeding. */ |
5b384b3d PT |
2001 | gcc_assert (!e->symtree->n.sym->ts.deferred); |
2002 | tmp = e->symtree->n.sym->ts.u.cl->backend_decl; | |
2003 | } | |
6017b8f0 | 2004 | else if (e->symtree->n.sym->attr.function |
a7d3cd40 | 2005 | && e->symtree->n.sym == e->symtree->n.sym->result) |
6017b8f0 PT |
2006 | { |
2007 | tmp = gfc_get_fake_result_decl (e->symtree->n.sym, 0); | |
2008 | tmp = gfc_class_len_get (tmp); | |
2009 | } | |
5b384b3d PT |
2010 | else |
2011 | tmp = gfc_class_len_get (gfc_get_symbol_decl (e->symtree->n.sym)); | |
8b704316 | 2012 | gfc_get_symbol_decl (sym); |
5b384b3d PT |
2013 | charlen = sym->ts.type == BT_CHARACTER ? sym->ts.u.cl->backend_decl |
2014 | : gfc_class_len_get (sym->backend_decl); | |
2015 | /* Prevent adding a noop len= len. */ | |
2016 | if (tmp != charlen) | |
2017 | { | |
2018 | gfc_add_modify (&se.pre, charlen, | |
2019 | fold_convert (TREE_TYPE (charlen), tmp)); | |
2020 | gfc_add_init_cleanup (block, gfc_finish_block (&se.pre), | |
2021 | gfc_finish_block (&se.post)); | |
2022 | } | |
8b704316 | 2023 | } |
6312ef45 JW |
2024 | } |
2025 | ||
2026 | ||
9abe5e56 DK |
2027 | /* Translate a BLOCK construct. This is basically what we would do for a |
2028 | procedure body. */ | |
2029 | ||
2030 | tree | |
2031 | gfc_trans_block_construct (gfc_code* code) | |
2032 | { | |
2033 | gfc_namespace* ns; | |
2034 | gfc_symbol* sym; | |
e5ca9693 DK |
2035 | gfc_wrapped_block block; |
2036 | tree exit_label; | |
2037 | stmtblock_t body; | |
6312ef45 | 2038 | gfc_association_list *ass; |
9abe5e56 | 2039 | |
03af1e4c | 2040 | ns = code->ext.block.ns; |
9abe5e56 DK |
2041 | gcc_assert (ns); |
2042 | sym = ns->proc_name; | |
2043 | gcc_assert (sym); | |
2044 | ||
e5ca9693 | 2045 | /* Process local variables. */ |
9abe5e56 DK |
2046 | gcc_assert (!sym->tlink); |
2047 | sym->tlink = sym; | |
6312ef45 | 2048 | gfc_process_block_locals (ns); |
9abe5e56 | 2049 | |
e5ca9693 DK |
2050 | /* Generate code including exit-label. */ |
2051 | gfc_init_block (&body); | |
2052 | exit_label = gfc_build_label_decl (NULL_TREE); | |
2053 | code->exit_label = exit_label; | |
41dbbb37 | 2054 | |
dc7a8b4b | 2055 | finish_oacc_declare (ns, sym, true); |
41dbbb37 | 2056 | |
e5ca9693 DK |
2057 | gfc_add_expr_to_block (&body, gfc_trans_code (ns->code)); |
2058 | gfc_add_expr_to_block (&body, build1_v (LABEL_EXPR, exit_label)); | |
2059 | ||
2060 | /* Finish everything. */ | |
2061 | gfc_start_wrapped_block (&block, gfc_finish_block (&body)); | |
2062 | gfc_trans_deferred_vars (sym, &block); | |
6312ef45 JW |
2063 | for (ass = code->ext.block.assoc; ass; ass = ass->next) |
2064 | trans_associate_var (ass->st->n.sym, &block); | |
8b704316 | 2065 | |
e5ca9693 | 2066 | return gfc_finish_wrapped_block (&block); |
9abe5e56 DK |
2067 | } |
2068 | ||
1c122092 ML |
2069 | /* Translate the simple DO construct in a C-style manner. |
2070 | This is where the loop variable has integer type and step +-1. | |
2071 | Following code will generate infinite loop in case where TO is INT_MAX | |
2072 | (for +1 step) or INT_MIN (for -1 step) | |
9abe5e56 | 2073 | |
fbdad37d PB |
2074 | We translate a do loop from: |
2075 | ||
2076 | DO dovar = from, to, step | |
2077 | body | |
2078 | END DO | |
2079 | ||
2080 | to: | |
2081 | ||
2082 | [Evaluate loop bounds and step] | |
1c122092 ML |
2083 | dovar = from; |
2084 | for (;;) | |
2085 | { | |
2086 | if (dovar > to) | |
2087 | goto end_label; | |
2088 | body; | |
2089 | cycle_label: | |
2090 | dovar += step; | |
fbdad37d | 2091 | } |
1c122092 | 2092 | end_label: |
fbdad37d | 2093 | |
1c122092 ML |
2094 | This helps the optimizers by avoiding the extra pre-header condition and |
2095 | we save a register as we just compare the updated IV (not a value in | |
2096 | previous step). */ | |
fbdad37d PB |
2097 | |
2098 | static tree | |
2099 | gfc_trans_simple_do (gfc_code * code, stmtblock_t *pblock, tree dovar, | |
bc51e726 | 2100 | tree from, tree to, tree step, tree exit_cond) |
fbdad37d PB |
2101 | { |
2102 | stmtblock_t body; | |
2103 | tree type; | |
2104 | tree cond; | |
2105 | tree tmp; | |
33abc845 | 2106 | tree saved_dovar = NULL; |
fbdad37d PB |
2107 | tree cycle_label; |
2108 | tree exit_label; | |
55bd9c35 | 2109 | location_t loc; |
fbdad37d | 2110 | type = TREE_TYPE (dovar); |
1c122092 | 2111 | bool is_step_positive = tree_int_cst_sgn (step) > 0; |
fbdad37d | 2112 | |
55bd9c35 TB |
2113 | loc = code->ext.iterator->start->where.lb->location; |
2114 | ||
fbdad37d | 2115 | /* Initialize the DO variable: dovar = from. */ |
8594f636 | 2116 | gfc_add_modify_loc (loc, pblock, dovar, |
1c122092 | 2117 | fold_convert (TREE_TYPE (dovar), from)); |
8b704316 | 2118 | |
1cc0e193 | 2119 | /* Save value for do-tinkering checking. */ |
33abc845 TB |
2120 | if (gfc_option.rtcheck & GFC_RTCHECK_DO) |
2121 | { | |
2122 | saved_dovar = gfc_create_var (type, ".saved_dovar"); | |
55bd9c35 | 2123 | gfc_add_modify_loc (loc, pblock, saved_dovar, dovar); |
33abc845 | 2124 | } |
fbdad37d PB |
2125 | |
2126 | /* Cycle and exit statements are implemented with gotos. */ | |
2127 | cycle_label = gfc_build_label_decl (NULL_TREE); | |
2128 | exit_label = gfc_build_label_decl (NULL_TREE); | |
2129 | ||
1c122092 | 2130 | /* Put the labels where they can be found later. See gfc_trans_do(). */ |
e5ca9693 DK |
2131 | code->cycle_label = cycle_label; |
2132 | code->exit_label = exit_label; | |
fbdad37d PB |
2133 | |
2134 | /* Loop body. */ | |
2135 | gfc_start_block (&body); | |
2136 | ||
1c122092 ML |
2137 | /* Exit the loop if there is an I/O result condition or error. */ |
2138 | if (exit_cond) | |
2139 | { | |
2140 | tmp = build1_v (GOTO_EXPR, exit_label); | |
2141 | tmp = fold_build3_loc (loc, COND_EXPR, void_type_node, | |
2142 | exit_cond, tmp, | |
2143 | build_empty_stmt (loc)); | |
2144 | gfc_add_expr_to_block (&body, tmp); | |
2145 | } | |
2146 | ||
2147 | /* Evaluate the loop condition. */ | |
2148 | if (is_step_positive) | |
63ee5404 | 2149 | cond = fold_build2_loc (loc, GT_EXPR, logical_type_node, dovar, |
1c122092 ML |
2150 | fold_convert (type, to)); |
2151 | else | |
63ee5404 | 2152 | cond = fold_build2_loc (loc, LT_EXPR, logical_type_node, dovar, |
1c122092 ML |
2153 | fold_convert (type, to)); |
2154 | ||
2155 | cond = gfc_evaluate_now_loc (loc, cond, &body); | |
170a8bd6 EB |
2156 | if (code->ext.iterator->unroll && cond != error_mark_node) |
2157 | cond | |
2158 | = build3 (ANNOTATE_EXPR, TREE_TYPE (cond), cond, | |
2159 | build_int_cst (integer_type_node, annot_expr_unroll_kind), | |
2160 | build_int_cst (integer_type_node, code->ext.iterator->unroll)); | |
1c122092 ML |
2161 | |
2162 | /* The loop exit. */ | |
2163 | tmp = fold_build1_loc (loc, GOTO_EXPR, void_type_node, exit_label); | |
2164 | TREE_USED (exit_label) = 1; | |
2165 | tmp = fold_build3_loc (loc, COND_EXPR, void_type_node, | |
2166 | cond, tmp, build_empty_stmt (loc)); | |
2167 | gfc_add_expr_to_block (&body, tmp); | |
2168 | ||
2169 | /* Check whether the induction variable is equal to INT_MAX | |
2170 | (respectively to INT_MIN). */ | |
2171 | if (gfc_option.rtcheck & GFC_RTCHECK_DO) | |
2172 | { | |
2173 | tree boundary = is_step_positive ? TYPE_MAX_VALUE (type) | |
2174 | : TYPE_MIN_VALUE (type); | |
2175 | ||
63ee5404 | 2176 | tmp = fold_build2_loc (loc, EQ_EXPR, logical_type_node, |
1c122092 ML |
2177 | dovar, boundary); |
2178 | gfc_trans_runtime_check (true, false, tmp, &body, &code->loc, | |
2179 | "Loop iterates infinitely"); | |
2180 | } | |
2181 | ||
fbdad37d | 2182 | /* Main loop body. */ |
bc51e726 | 2183 | tmp = gfc_trans_code_cond (code->block->next, exit_cond); |
fbdad37d PB |
2184 | gfc_add_expr_to_block (&body, tmp); |
2185 | ||
2186 | /* Label for cycle statements (if needed). */ | |
2187 | if (TREE_USED (cycle_label)) | |
2188 | { | |
2189 | tmp = build1_v (LABEL_EXPR, cycle_label); | |
2190 | gfc_add_expr_to_block (&body, tmp); | |
2191 | } | |
2192 | ||
1cc0e193 | 2193 | /* Check whether someone has modified the loop variable. */ |
33abc845 TB |
2194 | if (gfc_option.rtcheck & GFC_RTCHECK_DO) |
2195 | { | |
63ee5404 | 2196 | tmp = fold_build2_loc (loc, NE_EXPR, logical_type_node, |
bc98ed60 | 2197 | dovar, saved_dovar); |
33abc845 TB |
2198 | gfc_trans_runtime_check (true, false, tmp, &body, &code->loc, |
2199 | "Loop variable has been modified"); | |
2200 | } | |
2201 | ||
fbdad37d | 2202 | /* Increment the loop variable. */ |
55bd9c35 TB |
2203 | tmp = fold_build2_loc (loc, PLUS_EXPR, type, dovar, step); |
2204 | gfc_add_modify_loc (loc, &body, dovar, tmp); | |
fbdad37d | 2205 | |
33abc845 | 2206 | if (gfc_option.rtcheck & GFC_RTCHECK_DO) |
55bd9c35 | 2207 | gfc_add_modify_loc (loc, &body, saved_dovar, dovar); |
33abc845 | 2208 | |
fbdad37d PB |
2209 | /* Finish the loop body. */ |
2210 | tmp = gfc_finish_block (&body); | |
55bd9c35 | 2211 | tmp = fold_build1_loc (loc, LOOP_EXPR, void_type_node, tmp); |
fbdad37d | 2212 | |
fbdad37d PB |
2213 | gfc_add_expr_to_block (pblock, tmp); |
2214 | ||
2215 | /* Add the exit label. */ | |
2216 | tmp = build1_v (LABEL_EXPR, exit_label); | |
2217 | gfc_add_expr_to_block (pblock, tmp); | |
2218 | ||
2219 | return gfc_finish_block (pblock); | |
2220 | } | |
2221 | ||
6de9cd9a DN |
2222 | /* Translate the DO construct. This obviously is one of the most |
2223 | important ones to get right with any compiler, but especially | |
2224 | so for Fortran. | |
2225 | ||
fbdad37d PB |
2226 | We special case some loop forms as described in gfc_trans_simple_do. |
2227 | For other cases we implement them with a separate loop count, | |
2228 | as described in the standard. | |
6de9cd9a DN |
2229 | |
2230 | We translate a do loop from: | |
2231 | ||
2232 | DO dovar = from, to, step | |
2233 | body | |
2234 | END DO | |
2235 | ||
2236 | to: | |
2237 | ||
fbdad37d | 2238 | [evaluate loop bounds and step] |
5d148c08 FXC |
2239 | empty = (step > 0 ? to < from : to > from); |
2240 | countm1 = (to - from) / step; | |
fbdad37d | 2241 | dovar = from; |
5d148c08 | 2242 | if (empty) goto exit_label; |
fbdad37d | 2243 | for (;;) |
6de9cd9a DN |
2244 | { |
2245 | body; | |
2246 | cycle_label: | |
fbdad37d | 2247 | dovar += step |
8c01de7f | 2248 | countm1t = countm1; |
76dac339 | 2249 | countm1--; |
8c01de7f | 2250 | if (countm1t == 0) goto exit_label; |
6de9cd9a DN |
2251 | } |
2252 | exit_label: | |
2253 | ||
5d148c08 FXC |
2254 | countm1 is an unsigned integer. It is equal to the loop count minus one, |
2255 | because the loop count itself can overflow. */ | |
6de9cd9a DN |
2256 | |
2257 | tree | |
bc51e726 | 2258 | gfc_trans_do (gfc_code * code, tree exit_cond) |
6de9cd9a DN |
2259 | { |
2260 | gfc_se se; | |
2261 | tree dovar; | |
33abc845 | 2262 | tree saved_dovar = NULL; |
6de9cd9a DN |
2263 | tree from; |
2264 | tree to; | |
2265 | tree step; | |
5d148c08 | 2266 | tree countm1; |
6de9cd9a | 2267 | tree type; |
5d148c08 | 2268 | tree utype; |
6de9cd9a DN |
2269 | tree cond; |
2270 | tree cycle_label; | |
2271 | tree exit_label; | |
2272 | tree tmp; | |
2273 | stmtblock_t block; | |
2274 | stmtblock_t body; | |
55bd9c35 | 2275 | location_t loc; |
6de9cd9a DN |
2276 | |
2277 | gfc_start_block (&block); | |
2278 | ||
55bd9c35 TB |
2279 | loc = code->ext.iterator->start->where.lb->location; |
2280 | ||
fbdad37d | 2281 | /* Evaluate all the expressions in the iterator. */ |
6de9cd9a DN |
2282 | gfc_init_se (&se, NULL); |
2283 | gfc_conv_expr_lhs (&se, code->ext.iterator->var); | |
2284 | gfc_add_block_to_block (&block, &se.pre); | |
2285 | dovar = se.expr; | |
2286 | type = TREE_TYPE (dovar); | |
2287 | ||
2288 | gfc_init_se (&se, NULL); | |
8d5cfa27 | 2289 | gfc_conv_expr_val (&se, code->ext.iterator->start); |
6de9cd9a | 2290 | gfc_add_block_to_block (&block, &se.pre); |
fbdad37d | 2291 | from = gfc_evaluate_now (se.expr, &block); |
6de9cd9a DN |
2292 | |
2293 | gfc_init_se (&se, NULL); | |
8d5cfa27 | 2294 | gfc_conv_expr_val (&se, code->ext.iterator->end); |
6de9cd9a | 2295 | gfc_add_block_to_block (&block, &se.pre); |
fbdad37d | 2296 | to = gfc_evaluate_now (se.expr, &block); |
6de9cd9a DN |
2297 | |
2298 | gfc_init_se (&se, NULL); | |
8d5cfa27 | 2299 | gfc_conv_expr_val (&se, code->ext.iterator->step); |
6de9cd9a | 2300 | gfc_add_block_to_block (&block, &se.pre); |
fbdad37d PB |
2301 | step = gfc_evaluate_now (se.expr, &block); |
2302 | ||
33abc845 TB |
2303 | if (gfc_option.rtcheck & GFC_RTCHECK_DO) |
2304 | { | |
63ee5404 | 2305 | tmp = fold_build2_loc (input_location, EQ_EXPR, logical_type_node, step, |
e8160c9a | 2306 | build_zero_cst (type)); |
33abc845 TB |
2307 | gfc_trans_runtime_check (true, false, tmp, &block, &code->loc, |
2308 | "DO step value is zero"); | |
2309 | } | |
2310 | ||
fbdad37d PB |
2311 | /* Special case simple loops. */ |
2312 | if (TREE_CODE (type) == INTEGER_TYPE | |
2313 | && (integer_onep (step) | |
2314 | || tree_int_cst_equal (step, integer_minus_one_node))) | |
1c122092 ML |
2315 | return gfc_trans_simple_do (code, &block, dovar, from, to, step, |
2316 | exit_cond); | |
6de9cd9a | 2317 | |
8d5cfa27 | 2318 | if (TREE_CODE (type) == INTEGER_TYPE) |
c0b29099 JJ |
2319 | utype = unsigned_type_for (type); |
2320 | else | |
2321 | utype = unsigned_type_for (gfc_array_index_type); | |
2322 | countm1 = gfc_create_var (utype, "countm1"); | |
5d148c08 | 2323 | |
c0b29099 JJ |
2324 | /* Cycle and exit statements are implemented with gotos. */ |
2325 | cycle_label = gfc_build_label_decl (NULL_TREE); | |
2326 | exit_label = gfc_build_label_decl (NULL_TREE); | |
2327 | TREE_USED (exit_label) = 1; | |
2328 | ||
e5ca9693 DK |
2329 | /* Put these labels where they can be found later. */ |
2330 | code->cycle_label = cycle_label; | |
2331 | code->exit_label = exit_label; | |
2332 | ||
c0b29099 JJ |
2333 | /* Initialize the DO variable: dovar = from. */ |
2334 | gfc_add_modify (&block, dovar, from); | |
2335 | ||
1cc0e193 | 2336 | /* Save value for do-tinkering checking. */ |
33abc845 TB |
2337 | if (gfc_option.rtcheck & GFC_RTCHECK_DO) |
2338 | { | |
2339 | saved_dovar = gfc_create_var (type, ".saved_dovar"); | |
55bd9c35 | 2340 | gfc_add_modify_loc (loc, &block, saved_dovar, dovar); |
33abc845 TB |
2341 | } |
2342 | ||
c0b29099 JJ |
2343 | /* Initialize loop count and jump to exit label if the loop is empty. |
2344 | This code is executed before we enter the loop body. We generate: | |
2345 | if (step > 0) | |
2346 | { | |
d17271de | 2347 | countm1 = (to - from) / step; |
8146bb58 TK |
2348 | if (to < from) |
2349 | goto exit_label; | |
c0b29099 JJ |
2350 | } |
2351 | else | |
2352 | { | |
d17271de | 2353 | countm1 = (from - to) / -step; |
8146bb58 TK |
2354 | if (to > from) |
2355 | goto exit_label; | |
2356 | } | |
c5e7e996 | 2357 | */ |
8146bb58 | 2358 | |
c0b29099 JJ |
2359 | if (TREE_CODE (type) == INTEGER_TYPE) |
2360 | { | |
c5e7e996 | 2361 | tree pos, neg, tou, fromu, stepu, tmp2; |
8146bb58 | 2362 | |
c5e7e996 RB |
2363 | /* The distance from FROM to TO cannot always be represented in a signed |
2364 | type, thus use unsigned arithmetic, also to avoid any undefined | |
2365 | overflow issues. */ | |
2366 | tou = fold_convert (utype, to); | |
2367 | fromu = fold_convert (utype, from); | |
2368 | stepu = fold_convert (utype, step); | |
5d148c08 | 2369 | |
c5e7e996 RB |
2370 | /* For a positive step, when to < from, exit, otherwise compute |
2371 | countm1 = ((unsigned)to - (unsigned)from) / (unsigned)step */ | |
63ee5404 | 2372 | tmp = fold_build2_loc (loc, LT_EXPR, logical_type_node, to, from); |
c5e7e996 RB |
2373 | tmp2 = fold_build2_loc (loc, TRUNC_DIV_EXPR, utype, |
2374 | fold_build2_loc (loc, MINUS_EXPR, utype, | |
2375 | tou, fromu), | |
2376 | stepu); | |
d17271de RB |
2377 | pos = build2 (COMPOUND_EXPR, void_type_node, |
2378 | fold_build2 (MODIFY_EXPR, void_type_node, | |
2379 | countm1, tmp2), | |
7119f1b1 ML |
2380 | build3_loc (loc, COND_EXPR, void_type_node, |
2381 | gfc_unlikely (tmp, PRED_FORTRAN_LOOP_PREHEADER), | |
d17271de RB |
2382 | build1_loc (loc, GOTO_EXPR, void_type_node, |
2383 | exit_label), NULL_TREE)); | |
c5e7e996 RB |
2384 | |
2385 | /* For a negative step, when to > from, exit, otherwise compute | |
2386 | countm1 = ((unsigned)from - (unsigned)to) / -(unsigned)step */ | |
63ee5404 | 2387 | tmp = fold_build2_loc (loc, GT_EXPR, logical_type_node, to, from); |
c5e7e996 RB |
2388 | tmp2 = fold_build2_loc (loc, TRUNC_DIV_EXPR, utype, |
2389 | fold_build2_loc (loc, MINUS_EXPR, utype, | |
2390 | fromu, tou), | |
2391 | fold_build1_loc (loc, NEGATE_EXPR, utype, stepu)); | |
d17271de RB |
2392 | neg = build2 (COMPOUND_EXPR, void_type_node, |
2393 | fold_build2 (MODIFY_EXPR, void_type_node, | |
2394 | countm1, tmp2), | |
7119f1b1 ML |
2395 | build3_loc (loc, COND_EXPR, void_type_node, |
2396 | gfc_unlikely (tmp, PRED_FORTRAN_LOOP_PREHEADER), | |
d17271de RB |
2397 | build1_loc (loc, GOTO_EXPR, void_type_node, |
2398 | exit_label), NULL_TREE)); | |
8146bb58 | 2399 | |
63ee5404 | 2400 | tmp = fold_build2_loc (loc, LT_EXPR, logical_type_node, step, |
c5e7e996 RB |
2401 | build_int_cst (TREE_TYPE (step), 0)); |
2402 | tmp = fold_build3_loc (loc, COND_EXPR, void_type_node, tmp, neg, pos); | |
8146bb58 | 2403 | |
c0b29099 | 2404 | gfc_add_expr_to_block (&block, tmp); |
8d5cfa27 SK |
2405 | } |
2406 | else | |
2407 | { | |
c5e7e996 RB |
2408 | tree pos_step; |
2409 | ||
8d5cfa27 SK |
2410 | /* TODO: We could use the same width as the real type. |
2411 | This would probably cause more problems that it solves | |
2412 | when we implement "long double" types. */ | |
c0b29099 | 2413 | |
55bd9c35 TB |
2414 | tmp = fold_build2_loc (loc, MINUS_EXPR, type, to, from); |
2415 | tmp = fold_build2_loc (loc, RDIV_EXPR, type, tmp, step); | |
2416 | tmp = fold_build1_loc (loc, FIX_TRUNC_EXPR, utype, tmp); | |
c0b29099 JJ |
2417 | gfc_add_modify (&block, countm1, tmp); |
2418 | ||
2419 | /* We need a special check for empty loops: | |
2420 | empty = (step > 0 ? to < from : to > from); */ | |
63ee5404 | 2421 | pos_step = fold_build2_loc (loc, GT_EXPR, logical_type_node, step, |
c5e7e996 | 2422 | build_zero_cst (type)); |
63ee5404 | 2423 | tmp = fold_build3_loc (loc, COND_EXPR, logical_type_node, pos_step, |
55bd9c35 | 2424 | fold_build2_loc (loc, LT_EXPR, |
63ee5404 | 2425 | logical_type_node, to, from), |
55bd9c35 | 2426 | fold_build2_loc (loc, GT_EXPR, |
63ee5404 | 2427 | logical_type_node, to, from)); |
c0b29099 | 2428 | /* If the loop is empty, go directly to the exit label. */ |
55bd9c35 | 2429 | tmp = fold_build3_loc (loc, COND_EXPR, void_type_node, tmp, |
c0b29099 | 2430 | build1_v (GOTO_EXPR, exit_label), |
c2255bc4 | 2431 | build_empty_stmt (input_location)); |
c0b29099 | 2432 | gfc_add_expr_to_block (&block, tmp); |
8d5cfa27 | 2433 | } |
5d148c08 | 2434 | |
6de9cd9a DN |
2435 | /* Loop body. */ |
2436 | gfc_start_block (&body); | |
2437 | ||
6de9cd9a | 2438 | /* Main loop body. */ |
bc51e726 | 2439 | tmp = gfc_trans_code_cond (code->block->next, exit_cond); |
6de9cd9a DN |
2440 | gfc_add_expr_to_block (&body, tmp); |
2441 | ||
2442 | /* Label for cycle statements (if needed). */ | |
2443 | if (TREE_USED (cycle_label)) | |
2444 | { | |
2445 | tmp = build1_v (LABEL_EXPR, cycle_label); | |
2446 | gfc_add_expr_to_block (&body, tmp); | |
2447 | } | |
2448 | ||
1cc0e193 | 2449 | /* Check whether someone has modified the loop variable. */ |
33abc845 TB |
2450 | if (gfc_option.rtcheck & GFC_RTCHECK_DO) |
2451 | { | |
63ee5404 | 2452 | tmp = fold_build2_loc (loc, NE_EXPR, logical_type_node, dovar, |
bc98ed60 | 2453 | saved_dovar); |
33abc845 TB |
2454 | gfc_trans_runtime_check (true, false, tmp, &body, &code->loc, |
2455 | "Loop variable has been modified"); | |
2456 | } | |
2457 | ||
bc51e726 JD |
2458 | /* Exit the loop if there is an I/O result condition or error. */ |
2459 | if (exit_cond) | |
2460 | { | |
2461 | tmp = build1_v (GOTO_EXPR, exit_label); | |
55bd9c35 | 2462 | tmp = fold_build3_loc (loc, COND_EXPR, void_type_node, |
bc98ed60 TB |
2463 | exit_cond, tmp, |
2464 | build_empty_stmt (input_location)); | |
bc51e726 JD |
2465 | gfc_add_expr_to_block (&body, tmp); |
2466 | } | |
2467 | ||
244974bd | 2468 | /* Increment the loop variable. */ |
55bd9c35 TB |
2469 | tmp = fold_build2_loc (loc, PLUS_EXPR, type, dovar, step); |
2470 | gfc_add_modify_loc (loc, &body, dovar, tmp); | |
244974bd | 2471 | |
33abc845 | 2472 | if (gfc_option.rtcheck & GFC_RTCHECK_DO) |
55bd9c35 | 2473 | gfc_add_modify_loc (loc, &body, saved_dovar, dovar); |
33abc845 | 2474 | |
8c01de7f JJ |
2475 | /* Initialize countm1t. */ |
2476 | tree countm1t = gfc_create_var (utype, "countm1t"); | |
2477 | gfc_add_modify_loc (loc, &body, countm1t, countm1); | |
5d148c08 | 2478 | |
6de9cd9a | 2479 | /* Decrement the loop count. */ |
55bd9c35 | 2480 | tmp = fold_build2_loc (loc, MINUS_EXPR, utype, countm1, |
bc98ed60 | 2481 | build_int_cst (utype, 1)); |
55bd9c35 | 2482 | gfc_add_modify_loc (loc, &body, countm1, tmp); |
6de9cd9a | 2483 | |
8c01de7f | 2484 | /* End with the loop condition. Loop until countm1t == 0. */ |
63ee5404 | 2485 | cond = fold_build2_loc (loc, EQ_EXPR, logical_type_node, countm1t, |
8c01de7f | 2486 | build_int_cst (utype, 0)); |
170a8bd6 EB |
2487 | if (code->ext.iterator->unroll && cond != error_mark_node) |
2488 | cond | |
2489 | = build3 (ANNOTATE_EXPR, TREE_TYPE (cond), cond, | |
2490 | build_int_cst (integer_type_node, annot_expr_unroll_kind), | |
2491 | build_int_cst (integer_type_node, code->ext.iterator->unroll)); | |
8c01de7f JJ |
2492 | tmp = fold_build1_loc (loc, GOTO_EXPR, void_type_node, exit_label); |
2493 | tmp = fold_build3_loc (loc, COND_EXPR, void_type_node, | |
2494 | cond, tmp, build_empty_stmt (loc)); | |
2495 | gfc_add_expr_to_block (&body, tmp); | |
2496 | ||
6de9cd9a DN |
2497 | /* End of loop body. */ |
2498 | tmp = gfc_finish_block (&body); | |
2499 | ||
2500 | /* The for loop itself. */ | |
55bd9c35 | 2501 | tmp = fold_build1_loc (loc, LOOP_EXPR, void_type_node, tmp); |
6de9cd9a DN |
2502 | gfc_add_expr_to_block (&block, tmp); |
2503 | ||
2504 | /* Add the exit label. */ | |
2505 | tmp = build1_v (LABEL_EXPR, exit_label); | |
2506 | gfc_add_expr_to_block (&block, tmp); | |
2507 | ||
2508 | return gfc_finish_block (&block); | |
2509 | } | |
2510 | ||
2511 | ||
2512 | /* Translate the DO WHILE construct. | |
2513 | ||
2514 | We translate | |
2515 | ||
2516 | DO WHILE (cond) | |
2517 | body | |
2518 | END DO | |
2519 | ||
2520 | to: | |
2521 | ||
2522 | for ( ; ; ) | |
2523 | { | |
2524 | pre_cond; | |
2525 | if (! cond) goto exit_label; | |
2526 | body; | |
2527 | cycle_label: | |
2528 | } | |
2529 | exit_label: | |
2530 | ||
2531 | Because the evaluation of the exit condition `cond' may have side | |
2532 | effects, we can't do much for empty loop bodies. The backend optimizers | |
2533 | should be smart enough to eliminate any dead loops. */ | |
2534 | ||
2535 | tree | |
2536 | gfc_trans_do_while (gfc_code * code) | |
2537 | { | |
2538 | gfc_se cond; | |
2539 | tree tmp; | |
2540 | tree cycle_label; | |
2541 | tree exit_label; | |
2542 | stmtblock_t block; | |
2543 | ||
2544 | /* Everything we build here is part of the loop body. */ | |
2545 | gfc_start_block (&block); | |
2546 | ||
2547 | /* Cycle and exit statements are implemented with gotos. */ | |
2548 | cycle_label = gfc_build_label_decl (NULL_TREE); | |
2549 | exit_label = gfc_build_label_decl (NULL_TREE); | |
2550 | ||
2551 | /* Put the labels where they can be found later. See gfc_trans_do(). */ | |
e5ca9693 DK |
2552 | code->cycle_label = cycle_label; |
2553 | code->exit_label = exit_label; | |
6de9cd9a DN |
2554 | |
2555 | /* Create a GIMPLE version of the exit condition. */ | |
2556 | gfc_init_se (&cond, NULL); | |
a513927a | 2557 | gfc_conv_expr_val (&cond, code->expr1); |
6de9cd9a | 2558 | gfc_add_block_to_block (&block, &cond.pre); |
55bd9c35 | 2559 | cond.expr = fold_build1_loc (code->expr1->where.lb->location, |
1d636855 | 2560 | TRUTH_NOT_EXPR, TREE_TYPE (cond.expr), cond.expr); |
6de9cd9a DN |
2561 | |
2562 | /* Build "IF (! cond) GOTO exit_label". */ | |
2563 | tmp = build1_v (GOTO_EXPR, exit_label); | |
2564 | TREE_USED (exit_label) = 1; | |
55bd9c35 TB |
2565 | tmp = fold_build3_loc (code->expr1->where.lb->location, COND_EXPR, |
2566 | void_type_node, cond.expr, tmp, | |
2567 | build_empty_stmt (code->expr1->where.lb->location)); | |
6de9cd9a DN |
2568 | gfc_add_expr_to_block (&block, tmp); |
2569 | ||
2570 | /* The main body of the loop. */ | |
2571 | tmp = gfc_trans_code (code->block->next); | |
2572 | gfc_add_expr_to_block (&block, tmp); | |
2573 | ||
2574 | /* Label for cycle statements (if needed). */ | |
2575 | if (TREE_USED (cycle_label)) | |
2576 | { | |
2577 | tmp = build1_v (LABEL_EXPR, cycle_label); | |
2578 | gfc_add_expr_to_block (&block, tmp); | |
2579 | } | |
2580 | ||
2581 | /* End of loop body. */ | |
2582 | tmp = gfc_finish_block (&block); | |
2583 | ||
2584 | gfc_init_block (&block); | |
2585 | /* Build the loop. */ | |
55bd9c35 TB |
2586 | tmp = fold_build1_loc (code->expr1->where.lb->location, LOOP_EXPR, |
2587 | void_type_node, tmp); | |
6de9cd9a DN |
2588 | gfc_add_expr_to_block (&block, tmp); |
2589 | ||
2590 | /* Add the exit label. */ | |
2591 | tmp = build1_v (LABEL_EXPR, exit_label); | |
2592 | gfc_add_expr_to_block (&block, tmp); | |
2593 | ||
2594 | return gfc_finish_block (&block); | |
2595 | } | |
2596 | ||
2597 | ||
dfd6231e PT |
2598 | /* Deal with the particular case of SELECT_TYPE, where the vtable |
2599 | addresses are used for the selection. Since these are not sorted, | |
2600 | the selection has to be made by a series of if statements. */ | |
2601 | ||
2602 | static tree | |
2603 | gfc_trans_select_type_cases (gfc_code * code) | |
2604 | { | |
2605 | gfc_code *c; | |
2606 | gfc_case *cp; | |
2607 | tree tmp; | |
2608 | tree cond; | |
2609 | tree low; | |
2610 | tree high; | |
2611 | gfc_se se; | |
2612 | gfc_se cse; | |
2613 | stmtblock_t block; | |
2614 | stmtblock_t body; | |
2615 | bool def = false; | |
2616 | gfc_expr *e; | |
2617 | gfc_start_block (&block); | |
2618 | ||
2619 | /* Calculate the switch expression. */ | |
2620 | gfc_init_se (&se, NULL); | |
2621 | gfc_conv_expr_val (&se, code->expr1); | |
2622 | gfc_add_block_to_block (&block, &se.pre); | |
2623 | ||
2624 | /* Generate an expression for the selector hash value, for | |
2625 | use to resolve character cases. */ | |
2626 | e = gfc_copy_expr (code->expr1->value.function.actual->expr); | |
2627 | gfc_add_hash_component (e); | |
2628 | ||
2629 | TREE_USED (code->exit_label) = 0; | |
2630 | ||
2631 | repeat: | |
2632 | for (c = code->block; c; c = c->block) | |
2633 | { | |
2634 | cp = c->ext.block.case_list; | |
2635 | ||
2636 | /* Assume it's the default case. */ | |
2637 | low = NULL_TREE; | |
2638 | high = NULL_TREE; | |
2639 | tmp = NULL_TREE; | |
2640 | ||
2641 | /* Put the default case at the end. */ | |
2642 | if ((!def && !cp->low) || (def && cp->low)) | |
2643 | continue; | |
2644 | ||
2645 | if (cp->low && (cp->ts.type == BT_CLASS | |
2646 | || cp->ts.type == BT_DERIVED)) | |
2647 | { | |
2648 | gfc_init_se (&cse, NULL); | |
2649 | gfc_conv_expr_val (&cse, cp->low); | |
2650 | gfc_add_block_to_block (&block, &cse.pre); | |
2651 | low = cse.expr; | |
2652 | } | |
2653 | else if (cp->ts.type != BT_UNKNOWN) | |
2654 | { | |
2655 | gcc_assert (cp->high); | |
2656 | gfc_init_se (&cse, NULL); | |
2657 | gfc_conv_expr_val (&cse, cp->high); | |
2658 | gfc_add_block_to_block (&block, &cse.pre); | |
2659 | high = cse.expr; | |
2660 | } | |
2661 | ||
2662 | gfc_init_block (&body); | |
2663 | ||
2664 | /* Add the statements for this case. */ | |
2665 | tmp = gfc_trans_code (c->next); | |
2666 | gfc_add_expr_to_block (&body, tmp); | |
2667 | ||
2668 | /* Break to the end of the SELECT TYPE construct. The default | |
2669 | case just falls through. */ | |
2670 | if (!def) | |
2671 | { | |
2672 | TREE_USED (code->exit_label) = 1; | |
2673 | tmp = build1_v (GOTO_EXPR, code->exit_label); | |
2674 | gfc_add_expr_to_block (&body, tmp); | |
2675 | } | |
2676 | ||
2677 | tmp = gfc_finish_block (&body); | |
2678 | ||
2679 | if (low != NULL_TREE) | |
2680 | { | |
2681 | /* Compare vtable pointers. */ | |
2682 | cond = fold_build2_loc (input_location, EQ_EXPR, | |
2683 | TREE_TYPE (se.expr), se.expr, low); | |
2684 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, | |
2685 | cond, tmp, | |
2686 | build_empty_stmt (input_location)); | |
2687 | } | |
2688 | else if (high != NULL_TREE) | |
2689 | { | |
2690 | /* Compare hash values for character cases. */ | |
2691 | gfc_init_se (&cse, NULL); | |
2692 | gfc_conv_expr_val (&cse, e); | |
2693 | gfc_add_block_to_block (&block, &cse.pre); | |
2694 | ||
2695 | cond = fold_build2_loc (input_location, EQ_EXPR, | |
2696 | TREE_TYPE (se.expr), high, cse.expr); | |
2697 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, | |
2698 | cond, tmp, | |
2699 | build_empty_stmt (input_location)); | |
2700 | } | |
2701 | ||
2702 | gfc_add_expr_to_block (&block, tmp); | |
2703 | } | |
2704 | ||
2705 | if (!def) | |
2706 | { | |
2707 | def = true; | |
2708 | goto repeat; | |
2709 | } | |
2710 | ||
2711 | gfc_free_expr (e); | |
2712 | ||
2713 | return gfc_finish_block (&block); | |
2714 | } | |
2715 | ||
2716 | ||
6de9cd9a DN |
2717 | /* Translate the SELECT CASE construct for INTEGER case expressions, |
2718 | without killing all potential optimizations. The problem is that | |
2719 | Fortran allows unbounded cases, but the back-end does not, so we | |
2720 | need to intercept those before we enter the equivalent SWITCH_EXPR | |
2721 | we can build. | |
2722 | ||
2723 | For example, we translate this, | |
2724 | ||
2725 | SELECT CASE (expr) | |
2726 | CASE (:100,101,105:115) | |
2727 | block_1 | |
2728 | CASE (190:199,200:) | |
2729 | block_2 | |
2730 | CASE (300) | |
2731 | block_3 | |
2732 | CASE DEFAULT | |
2733 | block_4 | |
2734 | END SELECT | |
2735 | ||
2736 | to the GENERIC equivalent, | |
2737 | ||
2738 | switch (expr) | |
2739 | { | |
2740 | case (minimum value for typeof(expr) ... 100: | |
2741 | case 101: | |
2742 | case 105 ... 114: | |
2743 | block1: | |
2744 | goto end_label; | |
2745 | ||
2746 | case 200 ... (maximum value for typeof(expr): | |
2747 | case 190 ... 199: | |
2748 | block2; | |
2749 | goto end_label; | |
2750 | ||
2751 | case 300: | |
2752 | block_3; | |
2753 | goto end_label; | |
2754 | ||
2755 | default: | |
2756 | block_4; | |
2757 | goto end_label; | |
2758 | } | |
2759 | ||
2760 | end_label: */ | |
2761 | ||
2762 | static tree | |
2763 | gfc_trans_integer_select (gfc_code * code) | |
2764 | { | |
2765 | gfc_code *c; | |
2766 | gfc_case *cp; | |
2767 | tree end_label; | |
2768 | tree tmp; | |
2769 | gfc_se se; | |
2770 | stmtblock_t block; | |
2771 | stmtblock_t body; | |
2772 | ||
2773 | gfc_start_block (&block); | |
2774 | ||
2775 | /* Calculate the switch expression. */ | |
2776 | gfc_init_se (&se, NULL); | |
a513927a | 2777 | gfc_conv_expr_val (&se, code->expr1); |
6de9cd9a DN |
2778 | gfc_add_block_to_block (&block, &se.pre); |
2779 | ||
2780 | end_label = gfc_build_label_decl (NULL_TREE); | |
2781 | ||
2782 | gfc_init_block (&body); | |
2783 | ||
2784 | for (c = code->block; c; c = c->block) | |
2785 | { | |
29a63d67 | 2786 | for (cp = c->ext.block.case_list; cp; cp = cp->next) |
6de9cd9a DN |
2787 | { |
2788 | tree low, high; | |
2789 | tree label; | |
2790 | ||
2791 | /* Assume it's the default case. */ | |
2792 | low = high = NULL_TREE; | |
2793 | ||
2794 | if (cp->low) | |
2795 | { | |
20585ad6 BM |
2796 | low = gfc_conv_mpz_to_tree (cp->low->value.integer, |
2797 | cp->low->ts.kind); | |
6de9cd9a DN |
2798 | |
2799 | /* If there's only a lower bound, set the high bound to the | |
2800 | maximum value of the case expression. */ | |
2801 | if (!cp->high) | |
2802 | high = TYPE_MAX_VALUE (TREE_TYPE (se.expr)); | |
2803 | } | |
2804 | ||
2805 | if (cp->high) | |
2806 | { | |
2807 | /* Three cases are possible here: | |
2808 | ||
2809 | 1) There is no lower bound, e.g. CASE (:N). | |
2810 | 2) There is a lower bound .NE. high bound, that is | |
2811 | a case range, e.g. CASE (N:M) where M>N (we make | |
2812 | sure that M>N during type resolution). | |
2813 | 3) There is a lower bound, and it has the same value | |
2814 | as the high bound, e.g. CASE (N:N). This is our | |
2815 | internal representation of CASE(N). | |
2816 | ||
2817 | In the first and second case, we need to set a value for | |
e2ae1407 | 2818 | high. In the third case, we don't because the GCC middle |
6de9cd9a DN |
2819 | end represents a single case value by just letting high be |
2820 | a NULL_TREE. We can't do that because we need to be able | |
2821 | to represent unbounded cases. */ | |
2822 | ||
2823 | if (!cp->low | |
b2954e12 SK |
2824 | || (mpz_cmp (cp->low->value.integer, |
2825 | cp->high->value.integer) != 0)) | |
20585ad6 BM |
2826 | high = gfc_conv_mpz_to_tree (cp->high->value.integer, |
2827 | cp->high->ts.kind); | |
6de9cd9a DN |
2828 | |
2829 | /* Unbounded case. */ | |
2830 | if (!cp->low) | |
2831 | low = TYPE_MIN_VALUE (TREE_TYPE (se.expr)); | |
2832 | } | |
2833 | ||
2834 | /* Build a label. */ | |
c006df4e | 2835 | label = gfc_build_label_decl (NULL_TREE); |
6de9cd9a DN |
2836 | |
2837 | /* Add this case label. | |
2838 | Add parameter 'label', make it match GCC backend. */ | |
3d528853 | 2839 | tmp = build_case_label (low, high, label); |
6de9cd9a DN |
2840 | gfc_add_expr_to_block (&body, tmp); |
2841 | } | |
2842 | ||
2843 | /* Add the statements for this case. */ | |
2844 | tmp = gfc_trans_code (c->next); | |
2845 | gfc_add_expr_to_block (&body, tmp); | |
2846 | ||
2847 | /* Break to the end of the construct. */ | |
2848 | tmp = build1_v (GOTO_EXPR, end_label); | |
2849 | gfc_add_expr_to_block (&body, tmp); | |
2850 | } | |
2851 | ||
2852 | tmp = gfc_finish_block (&body); | |
9e851845 | 2853 | tmp = fold_build2_loc (input_location, SWITCH_EXPR, NULL_TREE, se.expr, tmp); |
6de9cd9a DN |
2854 | gfc_add_expr_to_block (&block, tmp); |
2855 | ||
2856 | tmp = build1_v (LABEL_EXPR, end_label); | |
2857 | gfc_add_expr_to_block (&block, tmp); | |
2858 | ||
2859 | return gfc_finish_block (&block); | |
2860 | } | |
2861 | ||
2862 | ||
2863 | /* Translate the SELECT CASE construct for LOGICAL case expressions. | |
2864 | ||
2865 | There are only two cases possible here, even though the standard | |
2866 | does allow three cases in a LOGICAL SELECT CASE construct: .TRUE., | |
2867 | .FALSE., and DEFAULT. | |
2868 | ||
2869 | We never generate more than two blocks here. Instead, we always | |
2870 | try to eliminate the DEFAULT case. This way, we can translate this | |
2871 | kind of SELECT construct to a simple | |
2872 | ||
2873 | if {} else {}; | |
2874 | ||
2875 | expression in GENERIC. */ | |
2876 | ||
2877 | static tree | |
2878 | gfc_trans_logical_select (gfc_code * code) | |
2879 | { | |
2880 | gfc_code *c; | |
2881 | gfc_code *t, *f, *d; | |
2882 | gfc_case *cp; | |
2883 | gfc_se se; | |
2884 | stmtblock_t block; | |
2885 | ||
2886 | /* Assume we don't have any cases at all. */ | |
2887 | t = f = d = NULL; | |
2888 | ||
2889 | /* Now see which ones we actually do have. We can have at most two | |
2890 | cases in a single case list: one for .TRUE. and one for .FALSE. | |
2891 | The default case is always separate. If the cases for .TRUE. and | |
2892 | .FALSE. are in the same case list, the block for that case list | |
2893 | always executed, and we don't generate code a COND_EXPR. */ | |
2894 | for (c = code->block; c; c = c->block) | |
2895 | { | |
29a63d67 | 2896 | for (cp = c->ext.block.case_list; cp; cp = cp->next) |
6de9cd9a DN |
2897 | { |
2898 | if (cp->low) | |
2899 | { | |
2900 | if (cp->low->value.logical == 0) /* .FALSE. */ | |
2901 | f = c; | |
2902 | else /* if (cp->value.logical != 0), thus .TRUE. */ | |
2903 | t = c; | |
2904 | } | |
2905 | else | |
2906 | d = c; | |
2907 | } | |
2908 | } | |
2909 | ||
2910 | /* Start a new block. */ | |
2911 | gfc_start_block (&block); | |
2912 | ||
2913 | /* Calculate the switch expression. We always need to do this | |
2914 | because it may have side effects. */ | |
2915 | gfc_init_se (&se, NULL); | |
a513927a | 2916 | gfc_conv_expr_val (&se, code->expr1); |
6de9cd9a DN |
2917 | gfc_add_block_to_block (&block, &se.pre); |
2918 | ||
2919 | if (t == f && t != NULL) | |
2920 | { | |
2921 | /* Cases for .TRUE. and .FALSE. are in the same block. Just | |
2922 | translate the code for these cases, append it to the current | |
2923 | block. */ | |
2924 | gfc_add_expr_to_block (&block, gfc_trans_code (t->next)); | |
2925 | } | |
2926 | else | |
2927 | { | |
61ead135 | 2928 | tree true_tree, false_tree, stmt; |
6de9cd9a | 2929 | |
c2255bc4 AH |
2930 | true_tree = build_empty_stmt (input_location); |
2931 | false_tree = build_empty_stmt (input_location); | |
6de9cd9a DN |
2932 | |
2933 | /* If we have a case for .TRUE. and for .FALSE., discard the default case. | |
2934 | Otherwise, if .TRUE. or .FALSE. is missing and there is a default case, | |
2935 | make the missing case the default case. */ | |
2936 | if (t != NULL && f != NULL) | |
2937 | d = NULL; | |
2938 | else if (d != NULL) | |
2939 | { | |
2940 | if (t == NULL) | |
2941 | t = d; | |
2942 | else | |
2943 | f = d; | |
2944 | } | |
2945 | ||
2946 | /* Translate the code for each of these blocks, and append it to | |
2947 | the current block. */ | |
2948 | if (t != NULL) | |
2949 | true_tree = gfc_trans_code (t->next); | |
2950 | ||
2951 | if (f != NULL) | |
2952 | false_tree = gfc_trans_code (f->next); | |
2953 | ||
bc98ed60 TB |
2954 | stmt = fold_build3_loc (input_location, COND_EXPR, void_type_node, |
2955 | se.expr, true_tree, false_tree); | |
61ead135 | 2956 | gfc_add_expr_to_block (&block, stmt); |
6de9cd9a DN |
2957 | } |
2958 | ||
2959 | return gfc_finish_block (&block); | |
2960 | } | |
2961 | ||
2962 | ||
d2886bc7 JJ |
2963 | /* The jump table types are stored in static variables to avoid |
2964 | constructing them from scratch every single time. */ | |
2965 | static GTY(()) tree select_struct[2]; | |
2966 | ||
6de9cd9a DN |
2967 | /* Translate the SELECT CASE construct for CHARACTER case expressions. |
2968 | Instead of generating compares and jumps, it is far simpler to | |
2969 | generate a data structure describing the cases in order and call a | |
2970 | library subroutine that locates the right case. | |
2971 | This is particularly true because this is the only case where we | |
2972 | might have to dispose of a temporary. | |
2973 | The library subroutine returns a pointer to jump to or NULL if no | |
2974 | branches are to be taken. */ | |
2975 | ||
2976 | static tree | |
2977 | gfc_trans_character_select (gfc_code *code) | |
2978 | { | |
8748ad99 | 2979 | tree init, end_label, tmp, type, case_num, label, fndecl; |
6de9cd9a DN |
2980 | stmtblock_t block, body; |
2981 | gfc_case *cp, *d; | |
2982 | gfc_code *c; | |
d2886bc7 | 2983 | gfc_se se, expr1se; |
d393bbd7 | 2984 | int n, k; |
9771b263 | 2985 | vec<constructor_elt, va_gc> *inits = NULL; |
d393bbd7 | 2986 | |
d2886bc7 JJ |
2987 | tree pchartype = gfc_get_pchar_type (code->expr1->ts.kind); |
2988 | ||
d393bbd7 FXC |
2989 | /* The jump table types are stored in static variables to avoid |
2990 | constructing them from scratch every single time. */ | |
d393bbd7 FXC |
2991 | static tree ss_string1[2], ss_string1_len[2]; |
2992 | static tree ss_string2[2], ss_string2_len[2]; | |
2993 | static tree ss_target[2]; | |
2994 | ||
29a63d67 | 2995 | cp = code->block->ext.block.case_list; |
d2886bc7 JJ |
2996 | while (cp->left != NULL) |
2997 | cp = cp->left; | |
2998 | ||
2999 | /* Generate the body */ | |
3000 | gfc_start_block (&block); | |
3001 | gfc_init_se (&expr1se, NULL); | |
3002 | gfc_conv_expr_reference (&expr1se, code->expr1); | |
3003 | ||
3004 | gfc_add_block_to_block (&block, &expr1se.pre); | |
3005 | ||
3006 | end_label = gfc_build_label_decl (NULL_TREE); | |
3007 | ||
3008 | gfc_init_block (&body); | |
3009 | ||
3010 | /* Attempt to optimize length 1 selects. */ | |
86e033e2 | 3011 | if (integer_onep (expr1se.string_length)) |
d2886bc7 JJ |
3012 | { |
3013 | for (d = cp; d; d = d->right) | |
3014 | { | |
f622221a | 3015 | gfc_charlen_t i; |
d2886bc7 JJ |
3016 | if (d->low) |
3017 | { | |
3018 | gcc_assert (d->low->expr_type == EXPR_CONSTANT | |
3019 | && d->low->ts.type == BT_CHARACTER); | |
3020 | if (d->low->value.character.length > 1) | |
3021 | { | |
3022 | for (i = 1; i < d->low->value.character.length; i++) | |
3023 | if (d->low->value.character.string[i] != ' ') | |
3024 | break; | |
3025 | if (i != d->low->value.character.length) | |
3026 | { | |
3027 | if (optimize && d->high && i == 1) | |
3028 | { | |
3029 | gcc_assert (d->high->expr_type == EXPR_CONSTANT | |
3030 | && d->high->ts.type == BT_CHARACTER); | |
3031 | if (d->high->value.character.length > 1 | |
3032 | && (d->low->value.character.string[0] | |
3033 | == d->high->value.character.string[0]) | |
3034 | && d->high->value.character.string[1] != ' ' | |
3035 | && ((d->low->value.character.string[1] < ' ') | |
3036 | == (d->high->value.character.string[1] | |
3037 | < ' '))) | |
3038 | continue; | |
3039 | } | |
3040 | break; | |
3041 | } | |
3042 | } | |
3043 | } | |
3044 | if (d->high) | |
3045 | { | |
3046 | gcc_assert (d->high->expr_type == EXPR_CONSTANT | |
3047 | && d->high->ts.type == BT_CHARACTER); | |
3048 | if (d->high->value.character.length > 1) | |
3049 | { | |
3050 | for (i = 1; i < d->high->value.character.length; i++) | |
3051 | if (d->high->value.character.string[i] != ' ') | |
3052 | break; | |
3053 | if (i != d->high->value.character.length) | |
3054 | break; | |
3055 | } | |
3056 | } | |
3057 | } | |
3058 | if (d == NULL) | |
3059 | { | |
3060 | tree ctype = gfc_get_char_type (code->expr1->ts.kind); | |
3061 | ||
3062 | for (c = code->block; c; c = c->block) | |
3063 | { | |
29a63d67 | 3064 | for (cp = c->ext.block.case_list; cp; cp = cp->next) |
d2886bc7 JJ |
3065 | { |
3066 | tree low, high; | |
3067 | tree label; | |
3068 | gfc_char_t r; | |
3069 | ||
3070 | /* Assume it's the default case. */ | |
3071 | low = high = NULL_TREE; | |
3072 | ||
3073 | if (cp->low) | |
3074 | { | |
3075 | /* CASE ('ab') or CASE ('ab':'az') will never match | |
3076 | any length 1 character. */ | |
3077 | if (cp->low->value.character.length > 1 | |
3078 | && cp->low->value.character.string[1] != ' ') | |
3079 | continue; | |
3080 | ||
3081 | if (cp->low->value.character.length > 0) | |
3082 | r = cp->low->value.character.string[0]; | |
3083 | else | |
3084 | r = ' '; | |
3085 | low = build_int_cst (ctype, r); | |
3086 | ||
3087 | /* If there's only a lower bound, set the high bound | |
3088 | to the maximum value of the case expression. */ | |
3089 | if (!cp->high) | |
3090 | high = TYPE_MAX_VALUE (ctype); | |
3091 | } | |
3092 | ||
3093 | if (cp->high) | |
3094 | { | |
3095 | if (!cp->low | |
3096 | || (cp->low->value.character.string[0] | |
3097 | != cp->high->value.character.string[0])) | |
3098 | { | |
3099 | if (cp->high->value.character.length > 0) | |
3100 | r = cp->high->value.character.string[0]; | |
3101 | else | |
3102 | r = ' '; | |
3103 | high = build_int_cst (ctype, r); | |
3104 | } | |
3105 | ||
3106 | /* Unbounded case. */ | |
3107 | if (!cp->low) | |
3108 | low = TYPE_MIN_VALUE (ctype); | |
3109 | } | |
3110 | ||
3111 | /* Build a label. */ | |
3112 | label = gfc_build_label_decl (NULL_TREE); | |
3113 | ||
3114 | /* Add this case label. | |
3115 | Add parameter 'label', make it match GCC backend. */ | |
3d528853 | 3116 | tmp = build_case_label (low, high, label); |
d2886bc7 JJ |
3117 | gfc_add_expr_to_block (&body, tmp); |
3118 | } | |
3119 | ||
3120 | /* Add the statements for this case. */ | |
3121 | tmp = gfc_trans_code (c->next); | |
3122 | gfc_add_expr_to_block (&body, tmp); | |
3123 | ||
3124 | /* Break to the end of the construct. */ | |
3125 | tmp = build1_v (GOTO_EXPR, end_label); | |
3126 | gfc_add_expr_to_block (&body, tmp); | |
3127 | } | |
3128 | ||
3129 | tmp = gfc_string_to_single_character (expr1se.string_length, | |
3130 | expr1se.expr, | |
3131 | code->expr1->ts.kind); | |
3132 | case_num = gfc_create_var (ctype, "case_num"); | |
3133 | gfc_add_modify (&block, case_num, tmp); | |
3134 | ||
3135 | gfc_add_block_to_block (&block, &expr1se.post); | |
3136 | ||
3137 | tmp = gfc_finish_block (&body); | |
9e851845 JJ |
3138 | tmp = fold_build2_loc (input_location, SWITCH_EXPR, NULL_TREE, |
3139 | case_num, tmp); | |
d2886bc7 JJ |
3140 | gfc_add_expr_to_block (&block, tmp); |
3141 | ||
3142 | tmp = build1_v (LABEL_EXPR, end_label); | |
3143 | gfc_add_expr_to_block (&block, tmp); | |
3144 | ||
3145 | return gfc_finish_block (&block); | |
3146 | } | |
3147 | } | |
6de9cd9a | 3148 | |
a513927a | 3149 | if (code->expr1->ts.kind == 1) |
d393bbd7 | 3150 | k = 0; |
a513927a | 3151 | else if (code->expr1->ts.kind == 4) |
d393bbd7 FXC |
3152 | k = 1; |
3153 | else | |
3154 | gcc_unreachable (); | |
6de9cd9a | 3155 | |
d393bbd7 | 3156 | if (select_struct[k] == NULL) |
6de9cd9a | 3157 | { |
dfd6ece2 | 3158 | tree *chain = NULL; |
d393bbd7 | 3159 | select_struct[k] = make_node (RECORD_TYPE); |
e2cad04b | 3160 | |
a513927a | 3161 | if (code->expr1->ts.kind == 1) |
d393bbd7 | 3162 | TYPE_NAME (select_struct[k]) = get_identifier ("_jump_struct_char1"); |
a513927a | 3163 | else if (code->expr1->ts.kind == 4) |
d393bbd7 FXC |
3164 | TYPE_NAME (select_struct[k]) = get_identifier ("_jump_struct_char4"); |
3165 | else | |
3166 | gcc_unreachable (); | |
6de9cd9a DN |
3167 | |
3168 | #undef ADD_FIELD | |
35151cd5 MM |
3169 | #define ADD_FIELD(NAME, TYPE) \ |
3170 | ss_##NAME[k] = gfc_add_field_to_struct (select_struct[k], \ | |
3171 | get_identifier (stringize(NAME)), \ | |
3172 | TYPE, \ | |
3173 | &chain) | |
6de9cd9a | 3174 | |
d393bbd7 FXC |
3175 | ADD_FIELD (string1, pchartype); |
3176 | ADD_FIELD (string1_len, gfc_charlen_type_node); | |
6de9cd9a | 3177 | |
d393bbd7 FXC |
3178 | ADD_FIELD (string2, pchartype); |
3179 | ADD_FIELD (string2_len, gfc_charlen_type_node); | |
6de9cd9a | 3180 | |
dd52ecb0 | 3181 | ADD_FIELD (target, integer_type_node); |
6de9cd9a DN |
3182 | #undef ADD_FIELD |
3183 | ||
d393bbd7 | 3184 | gfc_finish_type (select_struct[k]); |
6de9cd9a DN |
3185 | } |
3186 | ||
6de9cd9a DN |
3187 | n = 0; |
3188 | for (d = cp; d; d = d->right) | |
3189 | d->n = n++; | |
3190 | ||
6de9cd9a DN |
3191 | for (c = code->block; c; c = c->block) |
3192 | { | |
29a63d67 | 3193 | for (d = c->ext.block.case_list; d; d = d->next) |
6de9cd9a | 3194 | { |
2b8327ce | 3195 | label = gfc_build_label_decl (NULL_TREE); |
3d528853 NF |
3196 | tmp = build_case_label ((d->low == NULL && d->high == NULL) |
3197 | ? NULL | |
3198 | : build_int_cst (integer_type_node, d->n), | |
3199 | NULL, label); | |
6de9cd9a DN |
3200 | gfc_add_expr_to_block (&body, tmp); |
3201 | } | |
3202 | ||
3203 | tmp = gfc_trans_code (c->next); | |
3204 | gfc_add_expr_to_block (&body, tmp); | |
3205 | ||
923ab88c | 3206 | tmp = build1_v (GOTO_EXPR, end_label); |
6de9cd9a DN |
3207 | gfc_add_expr_to_block (&body, tmp); |
3208 | } | |
3209 | ||
3210 | /* Generate the structure describing the branches */ | |
d2886bc7 | 3211 | for (d = cp; d; d = d->right) |
6de9cd9a | 3212 | { |
9771b263 | 3213 | vec<constructor_elt, va_gc> *node = NULL; |
6de9cd9a DN |
3214 | |
3215 | gfc_init_se (&se, NULL); | |
3216 | ||
3217 | if (d->low == NULL) | |
3218 | { | |
8748ad99 | 3219 | CONSTRUCTOR_APPEND_ELT (node, ss_string1[k], null_pointer_node); |
f622221a | 3220 | CONSTRUCTOR_APPEND_ELT (node, ss_string1_len[k], build_zero_cst (gfc_charlen_type_node)); |
6de9cd9a DN |
3221 | } |
3222 | else | |
3223 | { | |
3224 | gfc_conv_expr_reference (&se, d->low); | |
3225 | ||
8748ad99 NF |
3226 | CONSTRUCTOR_APPEND_ELT (node, ss_string1[k], se.expr); |
3227 | CONSTRUCTOR_APPEND_ELT (node, ss_string1_len[k], se.string_length); | |
6de9cd9a DN |
3228 | } |
3229 | ||
3230 | if (d->high == NULL) | |
3231 | { | |
8748ad99 | 3232 | CONSTRUCTOR_APPEND_ELT (node, ss_string2[k], null_pointer_node); |
f622221a | 3233 | CONSTRUCTOR_APPEND_ELT (node, ss_string2_len[k], build_zero_cst (gfc_charlen_type_node)); |
6de9cd9a DN |
3234 | } |
3235 | else | |
3236 | { | |
3237 | gfc_init_se (&se, NULL); | |
3238 | gfc_conv_expr_reference (&se, d->high); | |
3239 | ||
8748ad99 NF |
3240 | CONSTRUCTOR_APPEND_ELT (node, ss_string2[k], se.expr); |
3241 | CONSTRUCTOR_APPEND_ELT (node, ss_string2_len[k], se.string_length); | |
6de9cd9a DN |
3242 | } |
3243 | ||
8748ad99 NF |
3244 | CONSTRUCTOR_APPEND_ELT (node, ss_target[k], |
3245 | build_int_cst (integer_type_node, d->n)); | |
6de9cd9a | 3246 | |
8748ad99 NF |
3247 | tmp = build_constructor (select_struct[k], node); |
3248 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, tmp); | |
6de9cd9a DN |
3249 | } |
3250 | ||
d393bbd7 | 3251 | type = build_array_type (select_struct[k], |
df09d1d5 | 3252 | build_index_type (size_int (n-1))); |
6de9cd9a | 3253 | |
8748ad99 | 3254 | init = build_constructor (type, inits); |
6de9cd9a | 3255 | TREE_CONSTANT (init) = 1; |
6de9cd9a DN |
3256 | TREE_STATIC (init) = 1; |
3257 | /* Create a static variable to hold the jump table. */ | |
3258 | tmp = gfc_create_var (type, "jumptable"); | |
3259 | TREE_CONSTANT (tmp) = 1; | |
6de9cd9a | 3260 | TREE_STATIC (tmp) = 1; |
0f0707d1 | 3261 | TREE_READONLY (tmp) = 1; |
6de9cd9a DN |
3262 | DECL_INITIAL (tmp) = init; |
3263 | init = tmp; | |
3264 | ||
5039610b | 3265 | /* Build the library call */ |
6de9cd9a | 3266 | init = gfc_build_addr_expr (pvoid_type_node, init); |
6de9cd9a | 3267 | |
a513927a | 3268 | if (code->expr1->ts.kind == 1) |
d393bbd7 | 3269 | fndecl = gfor_fndecl_select_string; |
a513927a | 3270 | else if (code->expr1->ts.kind == 4) |
d393bbd7 FXC |
3271 | fndecl = gfor_fndecl_select_string_char4; |
3272 | else | |
3273 | gcc_unreachable (); | |
3274 | ||
db3927fb | 3275 | tmp = build_call_expr_loc (input_location, |
df09d1d5 RG |
3276 | fndecl, 4, init, |
3277 | build_int_cst (gfc_charlen_type_node, n), | |
d2886bc7 | 3278 | expr1se.expr, expr1se.string_length); |
dd52ecb0 | 3279 | case_num = gfc_create_var (integer_type_node, "case_num"); |
726a989a | 3280 | gfc_add_modify (&block, case_num, tmp); |
dc6c7714 | 3281 | |
d2886bc7 | 3282 | gfc_add_block_to_block (&block, &expr1se.post); |
dc6c7714 | 3283 | |
6de9cd9a | 3284 | tmp = gfc_finish_block (&body); |
9e851845 JJ |
3285 | tmp = fold_build2_loc (input_location, SWITCH_EXPR, NULL_TREE, |
3286 | case_num, tmp); | |
6de9cd9a | 3287 | gfc_add_expr_to_block (&block, tmp); |
2b8327ce | 3288 | |
923ab88c | 3289 | tmp = build1_v (LABEL_EXPR, end_label); |
6de9cd9a DN |
3290 | gfc_add_expr_to_block (&block, tmp); |
3291 | ||
6de9cd9a DN |
3292 | return gfc_finish_block (&block); |
3293 | } | |
3294 | ||
3295 | ||
3296 | /* Translate the three variants of the SELECT CASE construct. | |
3297 | ||
3298 | SELECT CASEs with INTEGER case expressions can be translated to an | |
3299 | equivalent GENERIC switch statement, and for LOGICAL case | |
3300 | expressions we build one or two if-else compares. | |
3301 | ||
3302 | SELECT CASEs with CHARACTER case expressions are a whole different | |
3303 | story, because they don't exist in GENERIC. So we sort them and | |
3304 | do a binary search at runtime. | |
3305 | ||
3306 | Fortran has no BREAK statement, and it does not allow jumps from | |
3307 | one case block to another. That makes things a lot easier for | |
3308 | the optimizers. */ | |
3309 | ||
3310 | tree | |
3311 | gfc_trans_select (gfc_code * code) | |
3312 | { | |
e5ca9693 DK |
3313 | stmtblock_t block; |
3314 | tree body; | |
3315 | tree exit_label; | |
3316 | ||
a513927a | 3317 | gcc_assert (code && code->expr1); |
e5ca9693 DK |
3318 | gfc_init_block (&block); |
3319 | ||
3320 | /* Build the exit label and hang it in. */ | |
3321 | exit_label = gfc_build_label_decl (NULL_TREE); | |
3322 | code->exit_label = exit_label; | |
6de9cd9a DN |
3323 | |
3324 | /* Empty SELECT constructs are legal. */ | |
3325 | if (code->block == NULL) | |
e5ca9693 | 3326 | body = build_empty_stmt (input_location); |
6de9cd9a DN |
3327 | |
3328 | /* Select the correct translation function. */ | |
e5ca9693 DK |
3329 | else |
3330 | switch (code->expr1->ts.type) | |
3331 | { | |
3332 | case BT_LOGICAL: | |
3333 | body = gfc_trans_logical_select (code); | |
3334 | break; | |
3335 | ||
3336 | case BT_INTEGER: | |
3337 | body = gfc_trans_integer_select (code); | |
3338 | break; | |
3339 | ||
3340 | case BT_CHARACTER: | |
3341 | body = gfc_trans_character_select (code); | |
3342 | break; | |
3343 | ||
3344 | default: | |
3345 | gfc_internal_error ("gfc_trans_select(): Bad type for case expr."); | |
3346 | /* Not reached */ | |
3347 | } | |
3348 | ||
3349 | /* Build everything together. */ | |
3350 | gfc_add_expr_to_block (&block, body); | |
3351 | gfc_add_expr_to_block (&block, build1_v (LABEL_EXPR, exit_label)); | |
3352 | ||
dfd6231e PT |
3353 | return gfc_finish_block (&block); |
3354 | } | |
3355 | ||
3356 | tree | |
3357 | gfc_trans_select_type (gfc_code * code) | |
3358 | { | |
3359 | stmtblock_t block; | |
3360 | tree body; | |
3361 | tree exit_label; | |
3362 | ||
3363 | gcc_assert (code && code->expr1); | |
3364 | gfc_init_block (&block); | |
3365 | ||
3366 | /* Build the exit label and hang it in. */ | |
3367 | exit_label = gfc_build_label_decl (NULL_TREE); | |
3368 | code->exit_label = exit_label; | |
3369 | ||
3370 | /* Empty SELECT constructs are legal. */ | |
3371 | if (code->block == NULL) | |
3372 | body = build_empty_stmt (input_location); | |
3373 | else | |
3374 | body = gfc_trans_select_type_cases (code); | |
3375 | ||
3376 | /* Build everything together. */ | |
3377 | gfc_add_expr_to_block (&block, body); | |
3378 | ||
3379 | if (TREE_USED (exit_label)) | |
3380 | gfc_add_expr_to_block (&block, build1_v (LABEL_EXPR, exit_label)); | |
3381 | ||
e5ca9693 | 3382 | return gfc_finish_block (&block); |
6de9cd9a DN |
3383 | } |
3384 | ||
3385 | ||
640670c7 PT |
3386 | /* Traversal function to substitute a replacement symtree if the symbol |
3387 | in the expression is the same as that passed. f == 2 signals that | |
3388 | that variable itself is not to be checked - only the references. | |
3389 | This group of functions is used when the variable expression in a | |
3390 | FORALL assignment has internal references. For example: | |
3391 | FORALL (i = 1:4) p(p(i)) = i | |
3392 | The only recourse here is to store a copy of 'p' for the index | |
3393 | expression. */ | |
3394 | ||
3395 | static gfc_symtree *new_symtree; | |
3396 | static gfc_symtree *old_symtree; | |
3397 | ||
3398 | static bool | |
3399 | forall_replace (gfc_expr *expr, gfc_symbol *sym, int *f) | |
3400 | { | |
908a2235 PT |
3401 | if (expr->expr_type != EXPR_VARIABLE) |
3402 | return false; | |
640670c7 PT |
3403 | |
3404 | if (*f == 2) | |
3405 | *f = 1; | |
3406 | else if (expr->symtree->n.sym == sym) | |
3407 | expr->symtree = new_symtree; | |
3408 | ||
3409 | return false; | |
3410 | } | |
3411 | ||
3412 | static void | |
3413 | forall_replace_symtree (gfc_expr *e, gfc_symbol *sym, int f) | |
3414 | { | |
3415 | gfc_traverse_expr (e, sym, forall_replace, f); | |
3416 | } | |
3417 | ||
3418 | static bool | |
3419 | forall_restore (gfc_expr *expr, | |
3420 | gfc_symbol *sym ATTRIBUTE_UNUSED, | |
3421 | int *f ATTRIBUTE_UNUSED) | |
3422 | { | |
908a2235 PT |
3423 | if (expr->expr_type != EXPR_VARIABLE) |
3424 | return false; | |
640670c7 PT |
3425 | |
3426 | if (expr->symtree == new_symtree) | |
3427 | expr->symtree = old_symtree; | |
3428 | ||
3429 | return false; | |
3430 | } | |
3431 | ||
3432 | static void | |
3433 | forall_restore_symtree (gfc_expr *e) | |
3434 | { | |
3435 | gfc_traverse_expr (e, NULL, forall_restore, 0); | |
3436 | } | |
3437 | ||
3438 | static void | |
3439 | forall_make_variable_temp (gfc_code *c, stmtblock_t *pre, stmtblock_t *post) | |
3440 | { | |
3441 | gfc_se tse; | |
3442 | gfc_se rse; | |
3443 | gfc_expr *e; | |
3444 | gfc_symbol *new_sym; | |
3445 | gfc_symbol *old_sym; | |
3446 | gfc_symtree *root; | |
3447 | tree tmp; | |
3448 | ||
3449 | /* Build a copy of the lvalue. */ | |
a513927a | 3450 | old_symtree = c->expr1->symtree; |
640670c7 PT |
3451 | old_sym = old_symtree->n.sym; |
3452 | e = gfc_lval_expr_from_sym (old_sym); | |
3453 | if (old_sym->attr.dimension) | |
3454 | { | |
3455 | gfc_init_se (&tse, NULL); | |
430f2d1f | 3456 | gfc_conv_subref_array_arg (&tse, e, 0, INTENT_IN, false); |
640670c7 PT |
3457 | gfc_add_block_to_block (pre, &tse.pre); |
3458 | gfc_add_block_to_block (post, &tse.post); | |
db3927fb | 3459 | tse.expr = build_fold_indirect_ref_loc (input_location, tse.expr); |
640670c7 | 3460 | |
7bd5dad2 | 3461 | if (c->expr1->ref->u.ar.type != AR_SECTION) |
640670c7 PT |
3462 | { |
3463 | /* Use the variable offset for the temporary. */ | |
568e8e1e PT |
3464 | tmp = gfc_conv_array_offset (old_sym->backend_decl); |
3465 | gfc_conv_descriptor_offset_set (pre, tse.expr, tmp); | |
640670c7 PT |
3466 | } |
3467 | } | |
3468 | else | |
3469 | { | |
3470 | gfc_init_se (&tse, NULL); | |
3471 | gfc_init_se (&rse, NULL); | |
3472 | gfc_conv_expr (&rse, e); | |
3473 | if (e->ts.type == BT_CHARACTER) | |
3474 | { | |
3475 | tse.string_length = rse.string_length; | |
3476 | tmp = gfc_get_character_type_len (gfc_default_character_kind, | |
3477 | tse.string_length); | |
3478 | tse.expr = gfc_conv_string_tmp (&tse, build_pointer_type (tmp), | |
3479 | rse.string_length); | |
3480 | gfc_add_block_to_block (pre, &tse.pre); | |
3481 | gfc_add_block_to_block (post, &tse.post); | |
3482 | } | |
3483 | else | |
3484 | { | |
3485 | tmp = gfc_typenode_for_spec (&e->ts); | |
3486 | tse.expr = gfc_create_var (tmp, "temp"); | |
3487 | } | |
3488 | ||
ed673c00 MM |
3489 | tmp = gfc_trans_scalar_assign (&tse, &rse, e->ts, |
3490 | e->expr_type == EXPR_VARIABLE, false); | |
640670c7 PT |
3491 | gfc_add_expr_to_block (pre, tmp); |
3492 | } | |
3493 | gfc_free_expr (e); | |
3494 | ||
3495 | /* Create a new symbol to represent the lvalue. */ | |
3496 | new_sym = gfc_new_symbol (old_sym->name, NULL); | |
3497 | new_sym->ts = old_sym->ts; | |
3498 | new_sym->attr.referenced = 1; | |
59e36b72 | 3499 | new_sym->attr.temporary = 1; |
640670c7 PT |
3500 | new_sym->attr.dimension = old_sym->attr.dimension; |
3501 | new_sym->attr.flavor = old_sym->attr.flavor; | |
3502 | ||
3503 | /* Use the temporary as the backend_decl. */ | |
3504 | new_sym->backend_decl = tse.expr; | |
3505 | ||
3506 | /* Create a fake symtree for it. */ | |
3507 | root = NULL; | |
3508 | new_symtree = gfc_new_symtree (&root, old_sym->name); | |
3509 | new_symtree->n.sym = new_sym; | |
3510 | gcc_assert (new_symtree == root); | |
3511 | ||
3512 | /* Go through the expression reference replacing the old_symtree | |
3513 | with the new. */ | |
a513927a | 3514 | forall_replace_symtree (c->expr1, old_sym, 2); |
640670c7 PT |
3515 | |
3516 | /* Now we have made this temporary, we might as well use it for | |
3517 | the right hand side. */ | |
3518 | forall_replace_symtree (c->expr2, old_sym, 1); | |
3519 | } | |
3520 | ||
3521 | ||
3522 | /* Handles dependencies in forall assignments. */ | |
3523 | static int | |
3524 | check_forall_dependencies (gfc_code *c, stmtblock_t *pre, stmtblock_t *post) | |
3525 | { | |
3526 | gfc_ref *lref; | |
3527 | gfc_ref *rref; | |
3528 | int need_temp; | |
3529 | gfc_symbol *lsym; | |
3530 | ||
a513927a SK |
3531 | lsym = c->expr1->symtree->n.sym; |
3532 | need_temp = gfc_check_dependency (c->expr1, c->expr2, 0); | |
640670c7 PT |
3533 | |
3534 | /* Now check for dependencies within the 'variable' | |
3535 | expression itself. These are treated by making a complete | |
3536 | copy of variable and changing all the references to it | |
3537 | point to the copy instead. Note that the shallow copy of | |
3538 | the variable will not suffice for derived types with | |
3539 | pointer components. We therefore leave these to their | |
3540 | own devices. */ | |
3541 | if (lsym->ts.type == BT_DERIVED | |
bc21d315 | 3542 | && lsym->ts.u.derived->attr.pointer_comp) |
640670c7 PT |
3543 | return need_temp; |
3544 | ||
3545 | new_symtree = NULL; | |
524af0d6 | 3546 | if (find_forall_index (c->expr1, lsym, 2)) |
640670c7 PT |
3547 | { |
3548 | forall_make_variable_temp (c, pre, post); | |
3549 | need_temp = 0; | |
3550 | } | |
3551 | ||
3552 | /* Substrings with dependencies are treated in the same | |
3553 | way. */ | |
a513927a SK |
3554 | if (c->expr1->ts.type == BT_CHARACTER |
3555 | && c->expr1->ref | |
640670c7 PT |
3556 | && c->expr2->expr_type == EXPR_VARIABLE |
3557 | && lsym == c->expr2->symtree->n.sym) | |
3558 | { | |
a513927a | 3559 | for (lref = c->expr1->ref; lref; lref = lref->next) |
640670c7 PT |
3560 | if (lref->type == REF_SUBSTRING) |
3561 | break; | |
3562 | for (rref = c->expr2->ref; rref; rref = rref->next) | |
3563 | if (rref->type == REF_SUBSTRING) | |
3564 | break; | |
3565 | ||
3566 | if (rref && lref | |
3567 | && gfc_dep_compare_expr (rref->u.ss.start, lref->u.ss.start) < 0) | |
3568 | { | |
3569 | forall_make_variable_temp (c, pre, post); | |
3570 | need_temp = 0; | |
3571 | } | |
3572 | } | |
3573 | return need_temp; | |
3574 | } | |
3575 | ||
3576 | ||
3577 | static void | |
3578 | cleanup_forall_symtrees (gfc_code *c) | |
3579 | { | |
a513927a | 3580 | forall_restore_symtree (c->expr1); |
640670c7 | 3581 | forall_restore_symtree (c->expr2); |
cede9502 JM |
3582 | free (new_symtree->n.sym); |
3583 | free (new_symtree); | |
640670c7 PT |
3584 | } |
3585 | ||
3586 | ||
bfcabc6c RS |
3587 | /* Generate the loops for a FORALL block, specified by FORALL_TMP. BODY |
3588 | is the contents of the FORALL block/stmt to be iterated. MASK_FLAG | |
3589 | indicates whether we should generate code to test the FORALLs mask | |
3590 | array. OUTER is the loop header to be used for initializing mask | |
3591 | indices. | |
3592 | ||
3593 | The generated loop format is: | |
6de9cd9a DN |
3594 | count = (end - start + step) / step |
3595 | loopvar = start | |
3596 | while (1) | |
3597 | { | |
3598 | if (count <=0 ) | |
3599 | goto end_of_loop | |
3600 | <body> | |
3601 | loopvar += step | |
3602 | count -- | |
3603 | } | |
3604 | end_of_loop: */ | |
3605 | ||
3606 | static tree | |
bfcabc6c RS |
3607 | gfc_trans_forall_loop (forall_info *forall_tmp, tree body, |
3608 | int mask_flag, stmtblock_t *outer) | |
6de9cd9a | 3609 | { |
bfcabc6c | 3610 | int n, nvar; |
6de9cd9a DN |
3611 | tree tmp; |
3612 | tree cond; | |
3613 | stmtblock_t block; | |
3614 | tree exit_label; | |
3615 | tree count; | |
fcf3be37 | 3616 | tree var, start, end, step; |
6de9cd9a DN |
3617 | iter_info *iter; |
3618 | ||
bfcabc6c RS |
3619 | /* Initialize the mask index outside the FORALL nest. */ |
3620 | if (mask_flag && forall_tmp->mask) | |
726a989a | 3621 | gfc_add_modify (outer, forall_tmp->maskindex, gfc_index_zero_node); |
bfcabc6c | 3622 | |
6de9cd9a | 3623 | iter = forall_tmp->this_loop; |
bfcabc6c | 3624 | nvar = forall_tmp->nvar; |
6de9cd9a DN |
3625 | for (n = 0; n < nvar; n++) |
3626 | { | |
3627 | var = iter->var; | |
3628 | start = iter->start; | |
3629 | end = iter->end; | |
3630 | step = iter->step; | |
3631 | ||
3632 | exit_label = gfc_build_label_decl (NULL_TREE); | |
3633 | TREE_USED (exit_label) = 1; | |
3634 | ||
3635 | /* The loop counter. */ | |
3636 | count = gfc_create_var (TREE_TYPE (var), "count"); | |
3637 | ||
3638 | /* The body of the loop. */ | |
3639 | gfc_init_block (&block); | |
3640 | ||
3641 | /* The exit condition. */ | |
63ee5404 | 3642 | cond = fold_build2_loc (input_location, LE_EXPR, logical_type_node, |
bc98ed60 | 3643 | count, build_int_cst (TREE_TYPE (count), 0)); |
f0caea48 | 3644 | |
bc436e10 TK |
3645 | /* PR 83064 means that we cannot use annot_expr_parallel_kind until |
3646 | the autoparallelizer can hande this. */ | |
3647 | if (forall_tmp->do_concurrent) | |
ac9effed | 3648 | cond = build3 (ANNOTATE_EXPR, TREE_TYPE (cond), cond, |
2ca4e2c2 | 3649 | build_int_cst (integer_type_node, |
bc436e10 | 3650 | annot_expr_ivdep_kind), |
ac9effed | 3651 | integer_zero_node); |
2ca4e2c2 | 3652 | |
6de9cd9a | 3653 | tmp = build1_v (GOTO_EXPR, exit_label); |
bc98ed60 TB |
3654 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, |
3655 | cond, tmp, build_empty_stmt (input_location)); | |
6de9cd9a DN |
3656 | gfc_add_expr_to_block (&block, tmp); |
3657 | ||
3658 | /* The main loop body. */ | |
3659 | gfc_add_expr_to_block (&block, body); | |
3660 | ||
3661 | /* Increment the loop variable. */ | |
bc98ed60 TB |
3662 | tmp = fold_build2_loc (input_location, PLUS_EXPR, TREE_TYPE (var), var, |
3663 | step); | |
726a989a | 3664 | gfc_add_modify (&block, var, tmp); |
6de9cd9a | 3665 | |
a8e12e4d TS |
3666 | /* Advance to the next mask element. Only do this for the |
3667 | innermost loop. */ | |
fcf3be37 JJ |
3668 | if (n == 0 && mask_flag && forall_tmp->mask) |
3669 | { | |
3670 | tree maskindex = forall_tmp->maskindex; | |
bc98ed60 TB |
3671 | tmp = fold_build2_loc (input_location, PLUS_EXPR, gfc_array_index_type, |
3672 | maskindex, gfc_index_one_node); | |
726a989a | 3673 | gfc_add_modify (&block, maskindex, tmp); |
fcf3be37 JJ |
3674 | } |
3675 | ||
6de9cd9a | 3676 | /* Decrement the loop counter. */ |
bc98ed60 TB |
3677 | tmp = fold_build2_loc (input_location, MINUS_EXPR, TREE_TYPE (var), count, |
3678 | build_int_cst (TREE_TYPE (var), 1)); | |
726a989a | 3679 | gfc_add_modify (&block, count, tmp); |
6de9cd9a DN |
3680 | |
3681 | body = gfc_finish_block (&block); | |
3682 | ||
3683 | /* Loop var initialization. */ | |
3684 | gfc_init_block (&block); | |
726a989a | 3685 | gfc_add_modify (&block, var, start); |
6de9cd9a | 3686 | |
fcf3be37 | 3687 | |
6de9cd9a | 3688 | /* Initialize the loop counter. */ |
bc98ed60 TB |
3689 | tmp = fold_build2_loc (input_location, MINUS_EXPR, TREE_TYPE (var), step, |
3690 | start); | |
3691 | tmp = fold_build2_loc (input_location, PLUS_EXPR, TREE_TYPE (var), end, | |
3692 | tmp); | |
3693 | tmp = fold_build2_loc (input_location, TRUNC_DIV_EXPR, TREE_TYPE (var), | |
3694 | tmp, step); | |
726a989a | 3695 | gfc_add_modify (&block, count, tmp); |
6de9cd9a DN |
3696 | |
3697 | /* The loop expression. */ | |
923ab88c | 3698 | tmp = build1_v (LOOP_EXPR, body); |
6de9cd9a DN |
3699 | gfc_add_expr_to_block (&block, tmp); |
3700 | ||
3701 | /* The exit label. */ | |
3702 | tmp = build1_v (LABEL_EXPR, exit_label); | |
3703 | gfc_add_expr_to_block (&block, tmp); | |
3704 | ||
3705 | body = gfc_finish_block (&block); | |
3706 | iter = iter->next; | |
3707 | } | |
3708 | return body; | |
3709 | } | |
3710 | ||
3711 | ||
bfcabc6c RS |
3712 | /* Generate the body and loops according to MASK_FLAG. If MASK_FLAG |
3713 | is nonzero, the body is controlled by all masks in the forall nest. | |
3714 | Otherwise, the innermost loop is not controlled by it's mask. This | |
3715 | is used for initializing that mask. */ | |
6de9cd9a DN |
3716 | |
3717 | static tree | |
3718 | gfc_trans_nested_forall_loop (forall_info * nested_forall_info, tree body, | |
bfcabc6c | 3719 | int mask_flag) |
6de9cd9a DN |
3720 | { |
3721 | tree tmp; | |
bfcabc6c | 3722 | stmtblock_t header; |
6de9cd9a | 3723 | forall_info *forall_tmp; |
bfcabc6c RS |
3724 | tree mask, maskindex; |
3725 | ||
3726 | gfc_start_block (&header); | |
6de9cd9a DN |
3727 | |
3728 | forall_tmp = nested_forall_info; | |
bfcabc6c | 3729 | while (forall_tmp != NULL) |
6de9cd9a | 3730 | { |
bfcabc6c RS |
3731 | /* Generate body with masks' control. */ |
3732 | if (mask_flag) | |
6de9cd9a | 3733 | { |
bfcabc6c RS |
3734 | mask = forall_tmp->mask; |
3735 | maskindex = forall_tmp->maskindex; | |
6de9cd9a | 3736 | |
bfcabc6c RS |
3737 | /* If a mask was specified make the assignment conditional. */ |
3738 | if (mask) | |
3739 | { | |
1d6b7f39 | 3740 | tmp = gfc_build_array_ref (mask, maskindex, NULL); |
c2255bc4 AH |
3741 | body = build3_v (COND_EXPR, tmp, body, |
3742 | build_empty_stmt (input_location)); | |
6de9cd9a | 3743 | } |
6de9cd9a | 3744 | } |
bfcabc6c | 3745 | body = gfc_trans_forall_loop (forall_tmp, body, mask_flag, &header); |
e8d366ec | 3746 | forall_tmp = forall_tmp->prev_nest; |
bfcabc6c | 3747 | mask_flag = 1; |
6de9cd9a DN |
3748 | } |
3749 | ||
bfcabc6c RS |
3750 | gfc_add_expr_to_block (&header, body); |
3751 | return gfc_finish_block (&header); | |
6de9cd9a DN |
3752 | } |
3753 | ||
3754 | ||
3755 | /* Allocate data for holding a temporary array. Returns either a local | |
3756 | temporary array or a pointer variable. */ | |
3757 | ||
3758 | static tree | |
3759 | gfc_do_allocate (tree bytesize, tree size, tree * pdata, stmtblock_t * pblock, | |
3760 | tree elem_type) | |
3761 | { | |
3762 | tree tmpvar; | |
3763 | tree type; | |
3764 | tree tmp; | |
6de9cd9a DN |
3765 | |
3766 | if (INTEGER_CST_P (size)) | |
bc98ed60 TB |
3767 | tmp = fold_build2_loc (input_location, MINUS_EXPR, gfc_array_index_type, |
3768 | size, gfc_index_one_node); | |
6de9cd9a DN |
3769 | else |
3770 | tmp = NULL_TREE; | |
3771 | ||
7ab92584 | 3772 | type = build_range_type (gfc_array_index_type, gfc_index_zero_node, tmp); |
6de9cd9a | 3773 | type = build_array_type (elem_type, type); |
55250ed7 | 3774 | if (gfc_can_put_var_on_stack (bytesize) && INTEGER_CST_P (size)) |
6de9cd9a | 3775 | { |
6de9cd9a DN |
3776 | tmpvar = gfc_create_var (type, "temp"); |
3777 | *pdata = NULL_TREE; | |
3778 | } | |
3779 | else | |
3780 | { | |
3781 | tmpvar = gfc_create_var (build_pointer_type (type), "temp"); | |
3782 | *pdata = convert (pvoid_type_node, tmpvar); | |
3783 | ||
1529b8d9 | 3784 | tmp = gfc_call_malloc (pblock, TREE_TYPE (tmpvar), bytesize); |
726a989a | 3785 | gfc_add_modify (pblock, tmpvar, tmp); |
6de9cd9a DN |
3786 | } |
3787 | return tmpvar; | |
3788 | } | |
3789 | ||
3790 | ||
3791 | /* Generate codes to copy the temporary to the actual lhs. */ | |
3792 | ||
3793 | static tree | |
8de1f441 | 3794 | generate_loop_for_temp_to_lhs (gfc_expr *expr, tree tmp1, tree count3, |
7bd5dad2 LK |
3795 | tree count1, |
3796 | gfc_ss *lss, gfc_ss *rss, | |
3797 | tree wheremask, bool invert) | |
6de9cd9a | 3798 | { |
7bd5dad2 LK |
3799 | stmtblock_t block, body1; |
3800 | gfc_loopinfo loop; | |
3801 | gfc_se lse; | |
3802 | gfc_se rse; | |
011daa76 | 3803 | tree tmp; |
6de9cd9a DN |
3804 | tree wheremaskexpr; |
3805 | ||
7bd5dad2 | 3806 | (void) rss; /* TODO: unused. */ |
6de9cd9a | 3807 | |
7bd5dad2 | 3808 | gfc_start_block (&block); |
6de9cd9a | 3809 | |
7bd5dad2 LK |
3810 | gfc_init_se (&rse, NULL); |
3811 | gfc_init_se (&lse, NULL); | |
6de9cd9a | 3812 | |
7bd5dad2 LK |
3813 | if (lss == gfc_ss_terminator) |
3814 | { | |
3815 | gfc_init_block (&body1); | |
6de9cd9a | 3816 | gfc_conv_expr (&lse, expr); |
7bd5dad2 | 3817 | rse.expr = gfc_build_array_ref (tmp1, count1, NULL); |
6de9cd9a DN |
3818 | } |
3819 | else | |
3820 | { | |
7bd5dad2 LK |
3821 | /* Initialize the loop. */ |
3822 | gfc_init_loopinfo (&loop); | |
6de9cd9a | 3823 | |
7bd5dad2 LK |
3824 | /* We may need LSS to determine the shape of the expression. */ |
3825 | gfc_add_ss_to_loop (&loop, lss); | |
6de9cd9a | 3826 | |
7bd5dad2 LK |
3827 | gfc_conv_ss_startstride (&loop); |
3828 | gfc_conv_loop_setup (&loop, &expr->where); | |
6de9cd9a DN |
3829 | |
3830 | gfc_mark_ss_chain_used (lss, 1); | |
7bd5dad2 LK |
3831 | /* Start the loop body. */ |
3832 | gfc_start_scalarized_body (&loop, &body1); | |
6de9cd9a | 3833 | |
7bd5dad2 LK |
3834 | /* Translate the expression. */ |
3835 | gfc_copy_loopinfo_to_se (&lse, &loop); | |
6de9cd9a | 3836 | lse.ss = lss; |
7bd5dad2 | 3837 | gfc_conv_expr (&lse, expr); |
6de9cd9a DN |
3838 | |
3839 | /* Form the expression of the temporary. */ | |
7bd5dad2 LK |
3840 | rse.expr = gfc_build_array_ref (tmp1, count1, NULL); |
3841 | } | |
6de9cd9a | 3842 | |
7bd5dad2 LK |
3843 | /* Use the scalar assignment. */ |
3844 | rse.string_length = lse.string_length; | |
3845 | tmp = gfc_trans_scalar_assign (&lse, &rse, expr->ts, | |
3846 | expr->expr_type == EXPR_VARIABLE, false); | |
6de9cd9a | 3847 | |
7bd5dad2 LK |
3848 | /* Form the mask expression according to the mask tree list. */ |
3849 | if (wheremask) | |
3850 | { | |
3851 | wheremaskexpr = gfc_build_array_ref (wheremask, count3, NULL); | |
3852 | if (invert) | |
3853 | wheremaskexpr = fold_build1_loc (input_location, TRUTH_NOT_EXPR, | |
3854 | TREE_TYPE (wheremaskexpr), | |
3855 | wheremaskexpr); | |
3856 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, | |
3857 | wheremaskexpr, tmp, | |
3858 | build_empty_stmt (input_location)); | |
3859 | } | |
6de9cd9a | 3860 | |
7bd5dad2 | 3861 | gfc_add_expr_to_block (&body1, tmp); |
6de9cd9a | 3862 | |
7bd5dad2 LK |
3863 | tmp = fold_build2_loc (input_location, PLUS_EXPR, TREE_TYPE (count1), |
3864 | count1, gfc_index_one_node); | |
3865 | gfc_add_modify (&body1, count1, tmp); | |
6de9cd9a | 3866 | |
7bd5dad2 LK |
3867 | if (lss == gfc_ss_terminator) |
3868 | gfc_add_block_to_block (&block, &body1); | |
3869 | else | |
3870 | { | |
6de9cd9a DN |
3871 | /* Increment count3. */ |
3872 | if (count3) | |
8de1f441 | 3873 | { |
bc98ed60 | 3874 | tmp = fold_build2_loc (input_location, PLUS_EXPR, |
7bd5dad2 LK |
3875 | gfc_array_index_type, |
3876 | count3, gfc_index_one_node); | |
3877 | gfc_add_modify (&body1, count3, tmp); | |
8de1f441 | 3878 | } |
6de9cd9a DN |
3879 | |
3880 | /* Generate the copying loops. */ | |
7bd5dad2 LK |
3881 | gfc_trans_scalarizing_loops (&loop, &body1); |
3882 | ||
3883 | gfc_add_block_to_block (&block, &loop.pre); | |
3884 | gfc_add_block_to_block (&block, &loop.post); | |
6de9cd9a | 3885 | |
7bd5dad2 LK |
3886 | gfc_cleanup_loop (&loop); |
3887 | /* TODO: Reuse lss and rss when copying temp->lhs. Need to be careful | |
3888 | as tree nodes in SS may not be valid in different scope. */ | |
6de9cd9a | 3889 | } |
7bd5dad2 LK |
3890 | |
3891 | tmp = gfc_finish_block (&block); | |
6de9cd9a DN |
3892 | return tmp; |
3893 | } | |
3894 | ||
3895 | ||
011daa76 RS |
3896 | /* Generate codes to copy rhs to the temporary. TMP1 is the address of |
3897 | temporary, LSS and RSS are formed in function compute_inner_temp_size(), | |
3898 | and should not be freed. WHEREMASK is the conditional execution mask | |
3899 | whose sense may be inverted by INVERT. */ | |
6de9cd9a DN |
3900 | |
3901 | static tree | |
8de1f441 JJ |
3902 | generate_loop_for_rhs_to_temp (gfc_expr *expr2, tree tmp1, tree count3, |
3903 | tree count1, gfc_ss *lss, gfc_ss *rss, | |
011daa76 | 3904 | tree wheremask, bool invert) |
6de9cd9a DN |
3905 | { |
3906 | stmtblock_t block, body1; | |
3907 | gfc_loopinfo loop; | |
3908 | gfc_se lse; | |
3909 | gfc_se rse; | |
011daa76 | 3910 | tree tmp; |
6de9cd9a DN |
3911 | tree wheremaskexpr; |
3912 | ||
3913 | gfc_start_block (&block); | |
3914 | ||
3915 | gfc_init_se (&rse, NULL); | |
3916 | gfc_init_se (&lse, NULL); | |
3917 | ||
3918 | if (lss == gfc_ss_terminator) | |
3919 | { | |
3920 | gfc_init_block (&body1); | |
3921 | gfc_conv_expr (&rse, expr2); | |
1d6b7f39 | 3922 | lse.expr = gfc_build_array_ref (tmp1, count1, NULL); |
6de9cd9a DN |
3923 | } |
3924 | else | |
3925 | { | |
1f2959f0 | 3926 | /* Initialize the loop. */ |
6de9cd9a DN |
3927 | gfc_init_loopinfo (&loop); |
3928 | ||
3929 | /* We may need LSS to determine the shape of the expression. */ | |
3930 | gfc_add_ss_to_loop (&loop, lss); | |
3931 | gfc_add_ss_to_loop (&loop, rss); | |
3932 | ||
3933 | gfc_conv_ss_startstride (&loop); | |
bdfd2ff0 | 3934 | gfc_conv_loop_setup (&loop, &expr2->where); |
6de9cd9a DN |
3935 | |
3936 | gfc_mark_ss_chain_used (rss, 1); | |
3937 | /* Start the loop body. */ | |
3938 | gfc_start_scalarized_body (&loop, &body1); | |
3939 | ||
3940 | /* Translate the expression. */ | |
3941 | gfc_copy_loopinfo_to_se (&rse, &loop); | |
3942 | rse.ss = rss; | |
3943 | gfc_conv_expr (&rse, expr2); | |
3944 | ||
3945 | /* Form the expression of the temporary. */ | |
1d6b7f39 | 3946 | lse.expr = gfc_build_array_ref (tmp1, count1, NULL); |
6de9cd9a DN |
3947 | } |
3948 | ||
3949 | /* Use the scalar assignment. */ | |
5046aff5 | 3950 | lse.string_length = rse.string_length; |
ed673c00 MM |
3951 | tmp = gfc_trans_scalar_assign (&lse, &rse, expr2->ts, |
3952 | expr2->expr_type == EXPR_VARIABLE, false); | |
6de9cd9a DN |
3953 | |
3954 | /* Form the mask expression according to the mask tree list. */ | |
3955 | if (wheremask) | |
3956 | { | |
1d6b7f39 | 3957 | wheremaskexpr = gfc_build_array_ref (wheremask, count3, NULL); |
011daa76 | 3958 | if (invert) |
bc98ed60 TB |
3959 | wheremaskexpr = fold_build1_loc (input_location, TRUTH_NOT_EXPR, |
3960 | TREE_TYPE (wheremaskexpr), | |
3961 | wheremaskexpr); | |
3962 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, | |
3963 | wheremaskexpr, tmp, | |
3964 | build_empty_stmt (input_location)); | |
6de9cd9a DN |
3965 | } |
3966 | ||
3967 | gfc_add_expr_to_block (&body1, tmp); | |
3968 | ||
3969 | if (lss == gfc_ss_terminator) | |
3970 | { | |
3971 | gfc_add_block_to_block (&block, &body1); | |
8de1f441 JJ |
3972 | |
3973 | /* Increment count1. */ | |
bc98ed60 TB |
3974 | tmp = fold_build2_loc (input_location, PLUS_EXPR, TREE_TYPE (count1), |
3975 | count1, gfc_index_one_node); | |
726a989a | 3976 | gfc_add_modify (&block, count1, tmp); |
6de9cd9a DN |
3977 | } |
3978 | else | |
3979 | { | |
8de1f441 | 3980 | /* Increment count1. */ |
bc98ed60 TB |
3981 | tmp = fold_build2_loc (input_location, PLUS_EXPR, gfc_array_index_type, |
3982 | count1, gfc_index_one_node); | |
726a989a | 3983 | gfc_add_modify (&body1, count1, tmp); |
6de9cd9a DN |
3984 | |
3985 | /* Increment count3. */ | |
3986 | if (count3) | |
8de1f441 | 3987 | { |
bc98ed60 TB |
3988 | tmp = fold_build2_loc (input_location, PLUS_EXPR, |
3989 | gfc_array_index_type, | |
3990 | count3, gfc_index_one_node); | |
726a989a | 3991 | gfc_add_modify (&body1, count3, tmp); |
8de1f441 | 3992 | } |
6de9cd9a DN |
3993 | |
3994 | /* Generate the copying loops. */ | |
3995 | gfc_trans_scalarizing_loops (&loop, &body1); | |
3996 | ||
3997 | gfc_add_block_to_block (&block, &loop.pre); | |
3998 | gfc_add_block_to_block (&block, &loop.post); | |
3999 | ||
4000 | gfc_cleanup_loop (&loop); | |
4001 | /* TODO: Reuse lss and rss when copying temp->lhs. Need to be careful | |
8de1f441 | 4002 | as tree nodes in SS may not be valid in different scope. */ |
6de9cd9a | 4003 | } |
6de9cd9a DN |
4004 | |
4005 | tmp = gfc_finish_block (&block); | |
4006 | return tmp; | |
4007 | } | |
4008 | ||
4009 | ||
4010 | /* Calculate the size of temporary needed in the assignment inside forall. | |
4011 | LSS and RSS are filled in this function. */ | |
4012 | ||
4013 | static tree | |
4014 | compute_inner_temp_size (gfc_expr *expr1, gfc_expr *expr2, | |
4015 | stmtblock_t * pblock, | |
4016 | gfc_ss **lss, gfc_ss **rss) | |
4017 | { | |
4018 | gfc_loopinfo loop; | |
4019 | tree size; | |
4020 | int i; | |
ca86ddcc | 4021 | int save_flag; |
6de9cd9a DN |
4022 | tree tmp; |
4023 | ||
4024 | *lss = gfc_walk_expr (expr1); | |
4025 | *rss = NULL; | |
4026 | ||
7ab92584 | 4027 | size = gfc_index_one_node; |
6de9cd9a DN |
4028 | if (*lss != gfc_ss_terminator) |
4029 | { | |
4030 | gfc_init_loopinfo (&loop); | |
4031 | ||
4032 | /* Walk the RHS of the expression. */ | |
4033 | *rss = gfc_walk_expr (expr2); | |
4034 | if (*rss == gfc_ss_terminator) | |
26f77530 MM |
4035 | /* The rhs is scalar. Add a ss for the expression. */ |
4036 | *rss = gfc_get_scalar_ss (gfc_ss_terminator, expr2); | |
6de9cd9a DN |
4037 | |
4038 | /* Associate the SS with the loop. */ | |
4039 | gfc_add_ss_to_loop (&loop, *lss); | |
4040 | /* We don't actually need to add the rhs at this point, but it might | |
4041 | make guessing the loop bounds a bit easier. */ | |
4042 | gfc_add_ss_to_loop (&loop, *rss); | |
4043 | ||
4044 | /* We only want the shape of the expression, not rest of the junk | |
4045 | generated by the scalarizer. */ | |
4046 | loop.array_parameter = 1; | |
4047 | ||
4048 | /* Calculate the bounds of the scalarization. */ | |
d3d3011f | 4049 | save_flag = gfc_option.rtcheck; |
c3fb8214 | 4050 | gfc_option.rtcheck &= ~GFC_RTCHECK_BOUNDS; |
6de9cd9a | 4051 | gfc_conv_ss_startstride (&loop); |
d3d3011f | 4052 | gfc_option.rtcheck = save_flag; |
bdfd2ff0 | 4053 | gfc_conv_loop_setup (&loop, &expr2->where); |
6de9cd9a DN |
4054 | |
4055 | /* Figure out how many elements we need. */ | |
4056 | for (i = 0; i < loop.dimen; i++) | |
4057 | { | |
bc98ed60 TB |
4058 | tmp = fold_build2_loc (input_location, MINUS_EXPR, |
4059 | gfc_array_index_type, | |
4060 | gfc_index_one_node, loop.from[i]); | |
4061 | tmp = fold_build2_loc (input_location, PLUS_EXPR, | |
4062 | gfc_array_index_type, tmp, loop.to[i]); | |
4063 | size = fold_build2_loc (input_location, MULT_EXPR, | |
4064 | gfc_array_index_type, size, tmp); | |
6de9cd9a DN |
4065 | } |
4066 | gfc_add_block_to_block (pblock, &loop.pre); | |
4067 | size = gfc_evaluate_now (size, pblock); | |
4068 | gfc_add_block_to_block (pblock, &loop.post); | |
4069 | ||
4070 | /* TODO: write a function that cleans up a loopinfo without freeing | |
4071 | the SS chains. Currently a NOP. */ | |
4072 | } | |
4073 | ||
4074 | return size; | |
4075 | } | |
4076 | ||
4077 | ||
2ad62c9b RS |
4078 | /* Calculate the overall iterator number of the nested forall construct. |
4079 | This routine actually calculates the number of times the body of the | |
4080 | nested forall specified by NESTED_FORALL_INFO is executed and multiplies | |
4081 | that by the expression INNER_SIZE. The BLOCK argument specifies the | |
4082 | block in which to calculate the result, and the optional INNER_SIZE_BODY | |
4083 | argument contains any statements that need to executed (inside the loop) | |
4084 | to initialize or calculate INNER_SIZE. */ | |
6de9cd9a DN |
4085 | |
4086 | static tree | |
4087 | compute_overall_iter_number (forall_info *nested_forall_info, tree inner_size, | |
8de1f441 | 4088 | stmtblock_t *inner_size_body, stmtblock_t *block) |
6de9cd9a | 4089 | { |
2ad62c9b | 4090 | forall_info *forall_tmp = nested_forall_info; |
6de9cd9a DN |
4091 | tree tmp, number; |
4092 | stmtblock_t body; | |
4093 | ||
2ad62c9b RS |
4094 | /* We can eliminate the innermost unconditional loops with constant |
4095 | array bounds. */ | |
3bf783b7 RS |
4096 | if (INTEGER_CST_P (inner_size)) |
4097 | { | |
2ad62c9b | 4098 | while (forall_tmp |
8b704316 | 4099 | && !forall_tmp->mask |
2ad62c9b | 4100 | && INTEGER_CST_P (forall_tmp->size)) |
3bf783b7 | 4101 | { |
bc98ed60 TB |
4102 | inner_size = fold_build2_loc (input_location, MULT_EXPR, |
4103 | gfc_array_index_type, | |
4104 | inner_size, forall_tmp->size); | |
2ad62c9b | 4105 | forall_tmp = forall_tmp->prev_nest; |
3bf783b7 | 4106 | } |
2ad62c9b RS |
4107 | |
4108 | /* If there are no loops left, we have our constant result. */ | |
4109 | if (!forall_tmp) | |
4110 | return inner_size; | |
3bf783b7 | 4111 | } |
2ad62c9b RS |
4112 | |
4113 | /* Otherwise, create a temporary variable to compute the result. */ | |
6de9cd9a | 4114 | number = gfc_create_var (gfc_array_index_type, "num"); |
726a989a | 4115 | gfc_add_modify (block, number, gfc_index_zero_node); |
6de9cd9a DN |
4116 | |
4117 | gfc_start_block (&body); | |
8de1f441 JJ |
4118 | if (inner_size_body) |
4119 | gfc_add_block_to_block (&body, inner_size_body); | |
2ad62c9b | 4120 | if (forall_tmp) |
bc98ed60 TB |
4121 | tmp = fold_build2_loc (input_location, PLUS_EXPR, |
4122 | gfc_array_index_type, number, inner_size); | |
6de9cd9a DN |
4123 | else |
4124 | tmp = inner_size; | |
726a989a | 4125 | gfc_add_modify (&body, number, tmp); |
6de9cd9a DN |
4126 | tmp = gfc_finish_block (&body); |
4127 | ||
4128 | /* Generate loops. */ | |
2ad62c9b RS |
4129 | if (forall_tmp != NULL) |
4130 | tmp = gfc_trans_nested_forall_loop (forall_tmp, tmp, 1); | |
6de9cd9a DN |
4131 | |
4132 | gfc_add_expr_to_block (block, tmp); | |
4133 | ||
4134 | return number; | |
4135 | } | |
4136 | ||
4137 | ||
8de1f441 JJ |
4138 | /* Allocate temporary for forall construct. SIZE is the size of temporary |
4139 | needed. PTEMP1 is returned for space free. */ | |
6de9cd9a DN |
4140 | |
4141 | static tree | |
8de1f441 JJ |
4142 | allocate_temp_for_forall_nest_1 (tree type, tree size, stmtblock_t * block, |
4143 | tree * ptemp1) | |
6de9cd9a | 4144 | { |
bfcabc6c | 4145 | tree bytesize; |
6de9cd9a | 4146 | tree unit; |
6de9cd9a | 4147 | tree tmp; |
6de9cd9a | 4148 | |
7c57b2f1 | 4149 | unit = fold_convert (gfc_array_index_type, TYPE_SIZE_UNIT (type)); |
bfcabc6c | 4150 | if (!integer_onep (unit)) |
bc98ed60 TB |
4151 | bytesize = fold_build2_loc (input_location, MULT_EXPR, |
4152 | gfc_array_index_type, size, unit); | |
bfcabc6c RS |
4153 | else |
4154 | bytesize = size; | |
6de9cd9a DN |
4155 | |
4156 | *ptemp1 = NULL; | |
bfcabc6c | 4157 | tmp = gfc_do_allocate (bytesize, size, ptemp1, block, type); |
6de9cd9a DN |
4158 | |
4159 | if (*ptemp1) | |
db3927fb | 4160 | tmp = build_fold_indirect_ref_loc (input_location, tmp); |
6de9cd9a DN |
4161 | return tmp; |
4162 | } | |
4163 | ||
4164 | ||
8de1f441 JJ |
4165 | /* Allocate temporary for forall construct according to the information in |
4166 | nested_forall_info. INNER_SIZE is the size of temporary needed in the | |
4167 | assignment inside forall. PTEMP1 is returned for space free. */ | |
4168 | ||
4169 | static tree | |
4170 | allocate_temp_for_forall_nest (forall_info * nested_forall_info, tree type, | |
4171 | tree inner_size, stmtblock_t * inner_size_body, | |
4172 | stmtblock_t * block, tree * ptemp1) | |
4173 | { | |
4174 | tree size; | |
4175 | ||
4176 | /* Calculate the total size of temporary needed in forall construct. */ | |
4177 | size = compute_overall_iter_number (nested_forall_info, inner_size, | |
4178 | inner_size_body, block); | |
4179 | ||
4180 | return allocate_temp_for_forall_nest_1 (type, size, block, ptemp1); | |
4181 | } | |
4182 | ||
4183 | ||
4184 | /* Handle assignments inside forall which need temporary. | |
4185 | ||
4186 | forall (i=start:end:stride; maskexpr) | |
4187 | e<i> = f<i> | |
4188 | end forall | |
4189 | (where e,f<i> are arbitrary expressions possibly involving i | |
4190 | and there is a dependency between e<i> and f<i>) | |
4191 | Translates to: | |
4192 | masktmp(:) = maskexpr(:) | |
4193 | ||
4194 | maskindex = 0; | |
4195 | count1 = 0; | |
4196 | num = 0; | |
4197 | for (i = start; i <= end; i += stride) | |
4198 | num += SIZE (f<i>) | |
4199 | count1 = 0; | |
4200 | ALLOCATE (tmp(num)) | |
4201 | for (i = start; i <= end; i += stride) | |
4202 | { | |
4203 | if (masktmp[maskindex++]) | |
4204 | tmp[count1++] = f<i> | |
4205 | } | |
4206 | maskindex = 0; | |
4207 | count1 = 0; | |
4208 | for (i = start; i <= end; i += stride) | |
4209 | { | |
4210 | if (masktmp[maskindex++]) | |
4211 | e<i> = tmp[count1++] | |
4212 | } | |
4213 | DEALLOCATE (tmp) | |
4214 | */ | |
6de9cd9a | 4215 | static void |
011daa76 RS |
4216 | gfc_trans_assign_need_temp (gfc_expr * expr1, gfc_expr * expr2, |
4217 | tree wheremask, bool invert, | |
6de9cd9a DN |
4218 | forall_info * nested_forall_info, |
4219 | stmtblock_t * block) | |
4220 | { | |
4221 | tree type; | |
4222 | tree inner_size; | |
4223 | gfc_ss *lss, *rss; | |
8de1f441 | 4224 | tree count, count1; |
6de9cd9a DN |
4225 | tree tmp, tmp1; |
4226 | tree ptemp1; | |
8de1f441 | 4227 | stmtblock_t inner_size_body; |
6de9cd9a | 4228 | |
8de1f441 JJ |
4229 | /* Create vars. count1 is the current iterator number of the nested |
4230 | forall. */ | |
6de9cd9a | 4231 | count1 = gfc_create_var (gfc_array_index_type, "count1"); |
6de9cd9a DN |
4232 | |
4233 | /* Count is the wheremask index. */ | |
4234 | if (wheremask) | |
4235 | { | |
4236 | count = gfc_create_var (gfc_array_index_type, "count"); | |
726a989a | 4237 | gfc_add_modify (block, count, gfc_index_zero_node); |
6de9cd9a DN |
4238 | } |
4239 | else | |
4240 | count = NULL; | |
4241 | ||
4242 | /* Initialize count1. */ | |
726a989a | 4243 | gfc_add_modify (block, count1, gfc_index_zero_node); |
6de9cd9a DN |
4244 | |
4245 | /* Calculate the size of temporary needed in the assignment. Return loop, lss | |
4246 | and rss which are used in function generate_loop_for_rhs_to_temp(). */ | |
6de9cd9a | 4247 | /* The type of LHS. Used in function allocate_temp_for_forall_nest */ |
7bd5dad2 | 4248 | if (expr1->ts.type == BT_CHARACTER) |
640670c7 | 4249 | { |
7bd5dad2 LK |
4250 | type = NULL; |
4251 | if (expr1->ref && expr1->ref->type == REF_SUBSTRING) | |
640670c7 | 4252 | { |
7bd5dad2 LK |
4253 | gfc_se ssse; |
4254 | gfc_init_se (&ssse, NULL); | |
4255 | gfc_conv_expr (&ssse, expr1); | |
4256 | type = gfc_get_character_type_len (gfc_default_character_kind, | |
4257 | ssse.string_length); | |
4258 | } | |
4259 | else | |
4260 | { | |
4261 | if (!expr1->ts.u.cl->backend_decl) | |
4262 | { | |
4263 | gfc_se tse; | |
4264 | gcc_assert (expr1->ts.u.cl->length); | |
4265 | gfc_init_se (&tse, NULL); | |
4266 | gfc_conv_expr (&tse, expr1->ts.u.cl->length); | |
4267 | expr1->ts.u.cl->backend_decl = tse.expr; | |
4268 | } | |
4269 | type = gfc_get_character_type_len (gfc_default_character_kind, | |
4270 | expr1->ts.u.cl->backend_decl); | |
640670c7 | 4271 | } |
640670c7 PT |
4272 | } |
4273 | else | |
4274 | type = gfc_typenode_for_spec (&expr1->ts); | |
6de9cd9a | 4275 | |
7bd5dad2 LK |
4276 | gfc_init_block (&inner_size_body); |
4277 | inner_size = compute_inner_temp_size (expr1, expr2, &inner_size_body, | |
4278 | &lss, &rss); | |
4279 | ||
6de9cd9a | 4280 | /* Allocate temporary for nested forall construct according to the |
f7b529fa | 4281 | information in nested_forall_info and inner_size. */ |
8de1f441 JJ |
4282 | tmp1 = allocate_temp_for_forall_nest (nested_forall_info, type, inner_size, |
4283 | &inner_size_body, block, &ptemp1); | |
6de9cd9a | 4284 | |
6de9cd9a | 4285 | /* Generate codes to copy rhs to the temporary . */ |
8de1f441 | 4286 | tmp = generate_loop_for_rhs_to_temp (expr2, tmp1, count, count1, lss, rss, |
011daa76 | 4287 | wheremask, invert); |
6de9cd9a | 4288 | |
1f2959f0 | 4289 | /* Generate body and loops according to the information in |
6de9cd9a | 4290 | nested_forall_info. */ |
bfcabc6c | 4291 | tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1); |
6de9cd9a DN |
4292 | gfc_add_expr_to_block (block, tmp); |
4293 | ||
4294 | /* Reset count1. */ | |
726a989a | 4295 | gfc_add_modify (block, count1, gfc_index_zero_node); |
6de9cd9a | 4296 | |
6de9cd9a DN |
4297 | /* Reset count. */ |
4298 | if (wheremask) | |
726a989a | 4299 | gfc_add_modify (block, count, gfc_index_zero_node); |
6de9cd9a | 4300 | |
7bd5dad2 LK |
4301 | /* TODO: Second call to compute_inner_temp_size to initialize lss and |
4302 | rss; there must be a better way. */ | |
4303 | inner_size = compute_inner_temp_size (expr1, expr2, &inner_size_body, | |
4304 | &lss, &rss); | |
4305 | ||
6de9cd9a | 4306 | /* Generate codes to copy the temporary to lhs. */ |
011daa76 | 4307 | tmp = generate_loop_for_temp_to_lhs (expr1, tmp1, count, count1, |
7bd5dad2 | 4308 | lss, rss, |
011daa76 | 4309 | wheremask, invert); |
6de9cd9a | 4310 | |
1f2959f0 | 4311 | /* Generate body and loops according to the information in |
6de9cd9a | 4312 | nested_forall_info. */ |
bfcabc6c | 4313 | tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1); |
6de9cd9a DN |
4314 | gfc_add_expr_to_block (block, tmp); |
4315 | ||
4316 | if (ptemp1) | |
4317 | { | |
4318 | /* Free the temporary. */ | |
1529b8d9 | 4319 | tmp = gfc_call_free (ptemp1); |
6de9cd9a DN |
4320 | gfc_add_expr_to_block (block, tmp); |
4321 | } | |
4322 | } | |
4323 | ||
4324 | ||
4325 | /* Translate pointer assignment inside FORALL which need temporary. */ | |
4326 | ||
4327 | static void | |
4328 | gfc_trans_pointer_assign_need_temp (gfc_expr * expr1, gfc_expr * expr2, | |
4329 | forall_info * nested_forall_info, | |
4330 | stmtblock_t * block) | |
4331 | { | |
4332 | tree type; | |
4333 | tree inner_size; | |
4334 | gfc_ss *lss, *rss; | |
4335 | gfc_se lse; | |
4336 | gfc_se rse; | |
6d63e468 | 4337 | gfc_array_info *info; |
6de9cd9a DN |
4338 | gfc_loopinfo loop; |
4339 | tree desc; | |
4340 | tree parm; | |
4341 | tree parmtype; | |
4342 | stmtblock_t body; | |
4343 | tree count; | |
4344 | tree tmp, tmp1, ptemp1; | |
6de9cd9a DN |
4345 | |
4346 | count = gfc_create_var (gfc_array_index_type, "count"); | |
726a989a | 4347 | gfc_add_modify (block, count, gfc_index_zero_node); |
6de9cd9a | 4348 | |
932ebb94 | 4349 | inner_size = gfc_index_one_node; |
6de9cd9a DN |
4350 | lss = gfc_walk_expr (expr1); |
4351 | rss = gfc_walk_expr (expr2); | |
4352 | if (lss == gfc_ss_terminator) | |
4353 | { | |
4354 | type = gfc_typenode_for_spec (&expr1->ts); | |
4355 | type = build_pointer_type (type); | |
4356 | ||
4357 | /* Allocate temporary for nested forall construct according to the | |
4358 | information in nested_forall_info and inner_size. */ | |
8de1f441 JJ |
4359 | tmp1 = allocate_temp_for_forall_nest (nested_forall_info, type, |
4360 | inner_size, NULL, block, &ptemp1); | |
6de9cd9a DN |
4361 | gfc_start_block (&body); |
4362 | gfc_init_se (&lse, NULL); | |
1d6b7f39 | 4363 | lse.expr = gfc_build_array_ref (tmp1, count, NULL); |
6de9cd9a DN |
4364 | gfc_init_se (&rse, NULL); |
4365 | rse.want_pointer = 1; | |
4366 | gfc_conv_expr (&rse, expr2); | |
4367 | gfc_add_block_to_block (&body, &rse.pre); | |
726a989a | 4368 | gfc_add_modify (&body, lse.expr, |
cc2804f1 | 4369 | fold_convert (TREE_TYPE (lse.expr), rse.expr)); |
6de9cd9a DN |
4370 | gfc_add_block_to_block (&body, &rse.post); |
4371 | ||
4372 | /* Increment count. */ | |
bc98ed60 TB |
4373 | tmp = fold_build2_loc (input_location, PLUS_EXPR, gfc_array_index_type, |
4374 | count, gfc_index_one_node); | |
726a989a | 4375 | gfc_add_modify (&body, count, tmp); |
6de9cd9a DN |
4376 | |
4377 | tmp = gfc_finish_block (&body); | |
4378 | ||
1f2959f0 | 4379 | /* Generate body and loops according to the information in |
6de9cd9a | 4380 | nested_forall_info. */ |
bfcabc6c | 4381 | tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1); |
6de9cd9a DN |
4382 | gfc_add_expr_to_block (block, tmp); |
4383 | ||
4384 | /* Reset count. */ | |
726a989a | 4385 | gfc_add_modify (block, count, gfc_index_zero_node); |
6de9cd9a | 4386 | |
6de9cd9a DN |
4387 | gfc_start_block (&body); |
4388 | gfc_init_se (&lse, NULL); | |
4389 | gfc_init_se (&rse, NULL); | |
1d6b7f39 | 4390 | rse.expr = gfc_build_array_ref (tmp1, count, NULL); |
6de9cd9a DN |
4391 | lse.want_pointer = 1; |
4392 | gfc_conv_expr (&lse, expr1); | |
4393 | gfc_add_block_to_block (&body, &lse.pre); | |
726a989a | 4394 | gfc_add_modify (&body, lse.expr, rse.expr); |
6de9cd9a DN |
4395 | gfc_add_block_to_block (&body, &lse.post); |
4396 | /* Increment count. */ | |
bc98ed60 TB |
4397 | tmp = fold_build2_loc (input_location, PLUS_EXPR, gfc_array_index_type, |
4398 | count, gfc_index_one_node); | |
726a989a | 4399 | gfc_add_modify (&body, count, tmp); |
6de9cd9a DN |
4400 | tmp = gfc_finish_block (&body); |
4401 | ||
1f2959f0 | 4402 | /* Generate body and loops according to the information in |
6de9cd9a | 4403 | nested_forall_info. */ |
bfcabc6c | 4404 | tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1); |
6de9cd9a DN |
4405 | gfc_add_expr_to_block (block, tmp); |
4406 | } | |
4407 | else | |
4408 | { | |
4409 | gfc_init_loopinfo (&loop); | |
4410 | ||
4411 | /* Associate the SS with the loop. */ | |
4412 | gfc_add_ss_to_loop (&loop, rss); | |
4413 | ||
4414 | /* Setup the scalarizing loops and bounds. */ | |
4415 | gfc_conv_ss_startstride (&loop); | |
4416 | ||
bdfd2ff0 | 4417 | gfc_conv_loop_setup (&loop, &expr2->where); |
6de9cd9a | 4418 | |
1838afec | 4419 | info = &rss->info->data.array; |
6de9cd9a DN |
4420 | desc = info->descriptor; |
4421 | ||
4422 | /* Make a new descriptor. */ | |
4423 | parmtype = gfc_get_element_type (TREE_TYPE (desc)); | |
f33beee9 | 4424 | parmtype = gfc_get_array_type_bounds (parmtype, loop.dimen, 0, |
fad0afd7 | 4425 | loop.from, loop.to, 1, |
10174ddf | 4426 | GFC_ARRAY_UNKNOWN, true); |
6de9cd9a DN |
4427 | |
4428 | /* Allocate temporary for nested forall construct. */ | |
4429 | tmp1 = allocate_temp_for_forall_nest (nested_forall_info, parmtype, | |
8de1f441 | 4430 | inner_size, NULL, block, &ptemp1); |
6de9cd9a DN |
4431 | gfc_start_block (&body); |
4432 | gfc_init_se (&lse, NULL); | |
1d6b7f39 | 4433 | lse.expr = gfc_build_array_ref (tmp1, count, NULL); |
6de9cd9a | 4434 | lse.direct_byref = 1; |
2960a368 | 4435 | gfc_conv_expr_descriptor (&lse, expr2); |
6de9cd9a DN |
4436 | |
4437 | gfc_add_block_to_block (&body, &lse.pre); | |
4438 | gfc_add_block_to_block (&body, &lse.post); | |
4439 | ||
4440 | /* Increment count. */ | |
bc98ed60 TB |
4441 | tmp = fold_build2_loc (input_location, PLUS_EXPR, gfc_array_index_type, |
4442 | count, gfc_index_one_node); | |
726a989a | 4443 | gfc_add_modify (&body, count, tmp); |
6de9cd9a DN |
4444 | |
4445 | tmp = gfc_finish_block (&body); | |
4446 | ||
1f2959f0 | 4447 | /* Generate body and loops according to the information in |
6de9cd9a | 4448 | nested_forall_info. */ |
bfcabc6c | 4449 | tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1); |
6de9cd9a DN |
4450 | gfc_add_expr_to_block (block, tmp); |
4451 | ||
4452 | /* Reset count. */ | |
726a989a | 4453 | gfc_add_modify (block, count, gfc_index_zero_node); |
6de9cd9a | 4454 | |
1d6b7f39 | 4455 | parm = gfc_build_array_ref (tmp1, count, NULL); |
6de9cd9a | 4456 | gfc_init_se (&lse, NULL); |
2960a368 | 4457 | gfc_conv_expr_descriptor (&lse, expr1); |
726a989a | 4458 | gfc_add_modify (&lse.pre, lse.expr, parm); |
6de9cd9a DN |
4459 | gfc_start_block (&body); |
4460 | gfc_add_block_to_block (&body, &lse.pre); | |
4461 | gfc_add_block_to_block (&body, &lse.post); | |
4462 | ||
4463 | /* Increment count. */ | |
bc98ed60 TB |
4464 | tmp = fold_build2_loc (input_location, PLUS_EXPR, gfc_array_index_type, |
4465 | count, gfc_index_one_node); | |
726a989a | 4466 | gfc_add_modify (&body, count, tmp); |
6de9cd9a DN |
4467 | |
4468 | tmp = gfc_finish_block (&body); | |
4469 | ||
bfcabc6c | 4470 | tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1); |
6de9cd9a DN |
4471 | gfc_add_expr_to_block (block, tmp); |
4472 | } | |
4473 | /* Free the temporary. */ | |
4474 | if (ptemp1) | |
4475 | { | |
1529b8d9 | 4476 | tmp = gfc_call_free (ptemp1); |
6de9cd9a DN |
4477 | gfc_add_expr_to_block (block, tmp); |
4478 | } | |
4479 | } | |
4480 | ||
4481 | ||
4482 | /* FORALL and WHERE statements are really nasty, especially when you nest | |
4483 | them. All the rhs of a forall assignment must be evaluated before the | |
4484 | actual assignments are performed. Presumably this also applies to all the | |
4485 | assignments in an inner where statement. */ | |
4486 | ||
4487 | /* Generate code for a FORALL statement. Any temporaries are allocated as a | |
4488 | linear array, relying on the fact that we process in the same order in all | |
4489 | loops. | |
4490 | ||
4491 | forall (i=start:end:stride; maskexpr) | |
4492 | e<i> = f<i> | |
4493 | g<i> = h<i> | |
4494 | end forall | |
e7dc5b4f | 4495 | (where e,f,g,h<i> are arbitrary expressions possibly involving i) |
6de9cd9a | 4496 | Translates to: |
8de1f441 | 4497 | count = ((end + 1 - start) / stride) |
6de9cd9a DN |
4498 | masktmp(:) = maskexpr(:) |
4499 | ||
4500 | maskindex = 0; | |
4501 | for (i = start; i <= end; i += stride) | |
4502 | { | |
4503 | if (masktmp[maskindex++]) | |
4504 | e<i> = f<i> | |
4505 | } | |
4506 | maskindex = 0; | |
4507 | for (i = start; i <= end; i += stride) | |
4508 | { | |
4509 | if (masktmp[maskindex++]) | |
cafa34aa | 4510 | g<i> = h<i> |
6de9cd9a DN |
4511 | } |
4512 | ||
4513 | Note that this code only works when there are no dependencies. | |
4514 | Forall loop with array assignments and data dependencies are a real pain, | |
4515 | because the size of the temporary cannot always be determined before the | |
1f2959f0 | 4516 | loop is executed. This problem is compounded by the presence of nested |
6de9cd9a DN |
4517 | FORALL constructs. |
4518 | */ | |
4519 | ||
4520 | static tree | |
4521 | gfc_trans_forall_1 (gfc_code * code, forall_info * nested_forall_info) | |
4522 | { | |
640670c7 PT |
4523 | stmtblock_t pre; |
4524 | stmtblock_t post; | |
6de9cd9a DN |
4525 | stmtblock_t block; |
4526 | stmtblock_t body; | |
4527 | tree *var; | |
4528 | tree *start; | |
4529 | tree *end; | |
4530 | tree *step; | |
4531 | gfc_expr **varexpr; | |
4532 | tree tmp; | |
4533 | tree assign; | |
4534 | tree size; | |
6de9cd9a DN |
4535 | tree maskindex; |
4536 | tree mask; | |
4537 | tree pmask; | |
8c6a85e3 | 4538 | tree cycle_label = NULL_TREE; |
6de9cd9a DN |
4539 | int n; |
4540 | int nvar; | |
4541 | int need_temp; | |
4542 | gfc_forall_iterator *fa; | |
4543 | gfc_se se; | |
4544 | gfc_code *c; | |
7b5b57b7 | 4545 | gfc_saved_var *saved_vars; |
bfcabc6c RS |
4546 | iter_info *this_forall; |
4547 | forall_info *info; | |
e35a0e64 RS |
4548 | bool need_mask; |
4549 | ||
4550 | /* Do nothing if the mask is false. */ | |
a513927a SK |
4551 | if (code->expr1 |
4552 | && code->expr1->expr_type == EXPR_CONSTANT | |
4553 | && !code->expr1->value.logical) | |
c2255bc4 | 4554 | return build_empty_stmt (input_location); |
6de9cd9a DN |
4555 | |
4556 | n = 0; | |
4557 | /* Count the FORALL index number. */ | |
4558 | for (fa = code->ext.forall_iterator; fa; fa = fa->next) | |
4559 | n++; | |
4560 | nvar = n; | |
4561 | ||
4562 | /* Allocate the space for var, start, end, step, varexpr. */ | |
93acb62c JB |
4563 | var = XCNEWVEC (tree, nvar); |
4564 | start = XCNEWVEC (tree, nvar); | |
4565 | end = XCNEWVEC (tree, nvar); | |
4566 | step = XCNEWVEC (tree, nvar); | |
4567 | varexpr = XCNEWVEC (gfc_expr *, nvar); | |
4568 | saved_vars = XCNEWVEC (gfc_saved_var, nvar); | |
6de9cd9a DN |
4569 | |
4570 | /* Allocate the space for info. */ | |
93acb62c | 4571 | info = XCNEW (forall_info); |
bfcabc6c | 4572 | |
640670c7 PT |
4573 | gfc_start_block (&pre); |
4574 | gfc_init_block (&post); | |
4575 | gfc_init_block (&block); | |
bfcabc6c | 4576 | |
6de9cd9a DN |
4577 | n = 0; |
4578 | for (fa = code->ext.forall_iterator; fa; fa = fa->next) | |
4579 | { | |
4580 | gfc_symbol *sym = fa->var->symtree->n.sym; | |
4581 | ||
bfcabc6c | 4582 | /* Allocate space for this_forall. */ |
93acb62c | 4583 | this_forall = XCNEW (iter_info); |
6de9cd9a | 4584 | |
6de9cd9a DN |
4585 | /* Create a temporary variable for the FORALL index. */ |
4586 | tmp = gfc_typenode_for_spec (&sym->ts); | |
4587 | var[n] = gfc_create_var (tmp, sym->name); | |
7b5b57b7 PB |
4588 | gfc_shadow_sym (sym, var[n], &saved_vars[n]); |
4589 | ||
6de9cd9a DN |
4590 | /* Record it in this_forall. */ |
4591 | this_forall->var = var[n]; | |
4592 | ||
4593 | /* Replace the index symbol's backend_decl with the temporary decl. */ | |
4594 | sym->backend_decl = var[n]; | |
4595 | ||
4596 | /* Work out the start, end and stride for the loop. */ | |
4597 | gfc_init_se (&se, NULL); | |
4598 | gfc_conv_expr_val (&se, fa->start); | |
4599 | /* Record it in this_forall. */ | |
4600 | this_forall->start = se.expr; | |
4601 | gfc_add_block_to_block (&block, &se.pre); | |
4602 | start[n] = se.expr; | |
4603 | ||
4604 | gfc_init_se (&se, NULL); | |
4605 | gfc_conv_expr_val (&se, fa->end); | |
4606 | /* Record it in this_forall. */ | |
4607 | this_forall->end = se.expr; | |
4608 | gfc_make_safe_expr (&se); | |
4609 | gfc_add_block_to_block (&block, &se.pre); | |
4610 | end[n] = se.expr; | |
4611 | ||
4612 | gfc_init_se (&se, NULL); | |
4613 | gfc_conv_expr_val (&se, fa->stride); | |
4614 | /* Record it in this_forall. */ | |
4615 | this_forall->step = se.expr; | |
4616 | gfc_make_safe_expr (&se); | |
4617 | gfc_add_block_to_block (&block, &se.pre); | |
4618 | step[n] = se.expr; | |
4619 | ||
4620 | /* Set the NEXT field of this_forall to NULL. */ | |
4621 | this_forall->next = NULL; | |
4622 | /* Link this_forall to the info construct. */ | |
bfcabc6c | 4623 | if (info->this_loop) |
6de9cd9a | 4624 | { |
bfcabc6c | 4625 | iter_info *iter_tmp = info->this_loop; |
6de9cd9a DN |
4626 | while (iter_tmp->next != NULL) |
4627 | iter_tmp = iter_tmp->next; | |
4628 | iter_tmp->next = this_forall; | |
4629 | } | |
bfcabc6c RS |
4630 | else |
4631 | info->this_loop = this_forall; | |
6de9cd9a DN |
4632 | |
4633 | n++; | |
4634 | } | |
4635 | nvar = n; | |
4636 | ||
bfcabc6c | 4637 | /* Calculate the size needed for the current forall level. */ |
7ab92584 | 4638 | size = gfc_index_one_node; |
6de9cd9a DN |
4639 | for (n = 0; n < nvar; n++) |
4640 | { | |
6de9cd9a | 4641 | /* size = (end + step - start) / step. */ |
8b704316 | 4642 | tmp = fold_build2_loc (input_location, MINUS_EXPR, TREE_TYPE (start[n]), |
bc98ed60 TB |
4643 | step[n], start[n]); |
4644 | tmp = fold_build2_loc (input_location, PLUS_EXPR, TREE_TYPE (end[n]), | |
4645 | end[n], tmp); | |
4646 | tmp = fold_build2_loc (input_location, FLOOR_DIV_EXPR, TREE_TYPE (tmp), | |
4647 | tmp, step[n]); | |
6de9cd9a DN |
4648 | tmp = convert (gfc_array_index_type, tmp); |
4649 | ||
bc98ed60 TB |
4650 | size = fold_build2_loc (input_location, MULT_EXPR, gfc_array_index_type, |
4651 | size, tmp); | |
6de9cd9a DN |
4652 | } |
4653 | ||
4654 | /* Record the nvar and size of current forall level. */ | |
4655 | info->nvar = nvar; | |
4656 | info->size = size; | |
4657 | ||
a513927a | 4658 | if (code->expr1) |
e35a0e64 RS |
4659 | { |
4660 | /* If the mask is .true., consider the FORALL unconditional. */ | |
a513927a SK |
4661 | if (code->expr1->expr_type == EXPR_CONSTANT |
4662 | && code->expr1->value.logical) | |
e35a0e64 RS |
4663 | need_mask = false; |
4664 | else | |
4665 | need_mask = true; | |
4666 | } | |
4667 | else | |
4668 | need_mask = false; | |
4669 | ||
4670 | /* First we need to allocate the mask. */ | |
4671 | if (need_mask) | |
bfcabc6c RS |
4672 | { |
4673 | /* As the mask array can be very big, prefer compact boolean types. */ | |
4674 | tree mask_type = gfc_get_logical_type (gfc_logical_kinds[0].kind); | |
4675 | mask = allocate_temp_for_forall_nest (nested_forall_info, mask_type, | |
4676 | size, NULL, &block, &pmask); | |
4677 | maskindex = gfc_create_var_np (gfc_array_index_type, "mi"); | |
4678 | ||
4679 | /* Record them in the info structure. */ | |
4680 | info->maskindex = maskindex; | |
4681 | info->mask = mask; | |
4682 | } | |
6de9cd9a DN |
4683 | else |
4684 | { | |
bfcabc6c RS |
4685 | /* No mask was specified. */ |
4686 | maskindex = NULL_TREE; | |
4687 | mask = pmask = NULL_TREE; | |
4688 | } | |
4689 | ||
4690 | /* Link the current forall level to nested_forall_info. */ | |
e8d366ec RS |
4691 | info->prev_nest = nested_forall_info; |
4692 | nested_forall_info = info; | |
6de9cd9a DN |
4693 | |
4694 | /* Copy the mask into a temporary variable if required. | |
f7b529fa | 4695 | For now we assume a mask temporary is needed. */ |
e35a0e64 | 4696 | if (need_mask) |
6de9cd9a | 4697 | { |
bfcabc6c RS |
4698 | /* As the mask array can be very big, prefer compact boolean types. */ |
4699 | tree mask_type = gfc_get_logical_type (gfc_logical_kinds[0].kind); | |
6de9cd9a | 4700 | |
726a989a | 4701 | gfc_add_modify (&block, maskindex, gfc_index_zero_node); |
6de9cd9a DN |
4702 | |
4703 | /* Start of mask assignment loop body. */ | |
4704 | gfc_start_block (&body); | |
4705 | ||
4706 | /* Evaluate the mask expression. */ | |
4707 | gfc_init_se (&se, NULL); | |
a513927a | 4708 | gfc_conv_expr_val (&se, code->expr1); |
6de9cd9a DN |
4709 | gfc_add_block_to_block (&body, &se.pre); |
4710 | ||
4711 | /* Store the mask. */ | |
bfcabc6c | 4712 | se.expr = convert (mask_type, se.expr); |
6de9cd9a | 4713 | |
1d6b7f39 | 4714 | tmp = gfc_build_array_ref (mask, maskindex, NULL); |
726a989a | 4715 | gfc_add_modify (&body, tmp, se.expr); |
6de9cd9a DN |
4716 | |
4717 | /* Advance to the next mask element. */ | |
bc98ed60 TB |
4718 | tmp = fold_build2_loc (input_location, PLUS_EXPR, gfc_array_index_type, |
4719 | maskindex, gfc_index_one_node); | |
726a989a | 4720 | gfc_add_modify (&body, maskindex, tmp); |
6de9cd9a DN |
4721 | |
4722 | /* Generate the loops. */ | |
4723 | tmp = gfc_finish_block (&body); | |
bfcabc6c | 4724 | tmp = gfc_trans_nested_forall_loop (info, tmp, 0); |
6de9cd9a DN |
4725 | gfc_add_expr_to_block (&block, tmp); |
4726 | } | |
6de9cd9a | 4727 | |
8c6a85e3 TB |
4728 | if (code->op == EXEC_DO_CONCURRENT) |
4729 | { | |
4730 | gfc_init_block (&body); | |
4731 | cycle_label = gfc_build_label_decl (NULL_TREE); | |
4732 | code->cycle_label = cycle_label; | |
4733 | tmp = gfc_trans_code (code->block->next); | |
4734 | gfc_add_expr_to_block (&body, tmp); | |
4735 | ||
4736 | if (TREE_USED (cycle_label)) | |
4737 | { | |
4738 | tmp = build1_v (LABEL_EXPR, cycle_label); | |
4739 | gfc_add_expr_to_block (&body, tmp); | |
4740 | } | |
4741 | ||
4742 | tmp = gfc_finish_block (&body); | |
2ca4e2c2 | 4743 | nested_forall_info->do_concurrent = true; |
8c6a85e3 TB |
4744 | tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1); |
4745 | gfc_add_expr_to_block (&block, tmp); | |
4746 | goto done; | |
4747 | } | |
4748 | ||
6de9cd9a DN |
4749 | c = code->block->next; |
4750 | ||
4751 | /* TODO: loop merging in FORALL statements. */ | |
4752 | /* Now that we've got a copy of the mask, generate the assignment loops. */ | |
4753 | while (c) | |
4754 | { | |
4755 | switch (c->op) | |
4756 | { | |
4757 | case EXEC_ASSIGN: | |
640670c7 PT |
4758 | /* A scalar or array assignment. DO the simple check for |
4759 | lhs to rhs dependencies. These make a temporary for the | |
4760 | rhs and form a second forall block to copy to variable. */ | |
4761 | need_temp = check_forall_dependencies(c, &pre, &post); | |
4762 | ||
69de3b83 | 4763 | /* Temporaries due to array assignment data dependencies introduce |
6de9cd9a | 4764 | no end of problems. */ |
7bd5dad2 LK |
4765 | if (need_temp || flag_test_forall_temp) |
4766 | gfc_trans_assign_need_temp (c->expr1, c->expr2, NULL, false, | |
6de9cd9a DN |
4767 | nested_forall_info, &block); |
4768 | else | |
4769 | { | |
4770 | /* Use the normal assignment copying routines. */ | |
2b56d6a4 | 4771 | assign = gfc_trans_assignment (c->expr1, c->expr2, false, true); |
6de9cd9a | 4772 | |
6de9cd9a | 4773 | /* Generate body and loops. */ |
bfcabc6c RS |
4774 | tmp = gfc_trans_nested_forall_loop (nested_forall_info, |
4775 | assign, 1); | |
6de9cd9a DN |
4776 | gfc_add_expr_to_block (&block, tmp); |
4777 | } | |
4778 | ||
640670c7 PT |
4779 | /* Cleanup any temporary symtrees that have been made to deal |
4780 | with dependencies. */ | |
4781 | if (new_symtree) | |
4782 | cleanup_forall_symtrees (c); | |
4783 | ||
6de9cd9a DN |
4784 | break; |
4785 | ||
4786 | case EXEC_WHERE: | |
6de9cd9a | 4787 | /* Translate WHERE or WHERE construct nested in FORALL. */ |
011daa76 | 4788 | gfc_trans_where_2 (c, NULL, false, nested_forall_info, &block); |
3891cee2 | 4789 | break; |
6de9cd9a DN |
4790 | |
4791 | /* Pointer assignment inside FORALL. */ | |
4792 | case EXEC_POINTER_ASSIGN: | |
a513927a | 4793 | need_temp = gfc_check_dependency (c->expr1, c->expr2, 0); |
7bd5dad2 LK |
4794 | /* Avoid cases where a temporary would never be needed and where |
4795 | the temp code is guaranteed to fail. */ | |
4796 | if (need_temp | |
4797 | || (flag_test_forall_temp | |
4798 | && c->expr2->expr_type != EXPR_CONSTANT | |
4799 | && c->expr2->expr_type != EXPR_NULL)) | |
a513927a | 4800 | gfc_trans_pointer_assign_need_temp (c->expr1, c->expr2, |
6de9cd9a DN |
4801 | nested_forall_info, &block); |
4802 | else | |
4803 | { | |
4804 | /* Use the normal assignment copying routines. */ | |
a513927a | 4805 | assign = gfc_trans_pointer_assignment (c->expr1, c->expr2); |
6de9cd9a | 4806 | |
6de9cd9a | 4807 | /* Generate body and loops. */ |
bfcabc6c RS |
4808 | tmp = gfc_trans_nested_forall_loop (nested_forall_info, |
4809 | assign, 1); | |
6de9cd9a DN |
4810 | gfc_add_expr_to_block (&block, tmp); |
4811 | } | |
4812 | break; | |
4813 | ||
4814 | case EXEC_FORALL: | |
4815 | tmp = gfc_trans_forall_1 (c, nested_forall_info); | |
4816 | gfc_add_expr_to_block (&block, tmp); | |
4817 | break; | |
4818 | ||
48474141 PT |
4819 | /* Explicit subroutine calls are prevented by the frontend but interface |
4820 | assignments can legitimately produce them. */ | |
476220e7 | 4821 | case EXEC_ASSIGN_CALL: |
eb74e79b | 4822 | assign = gfc_trans_call (c, true, NULL_TREE, NULL_TREE, false); |
bfcabc6c | 4823 | tmp = gfc_trans_nested_forall_loop (nested_forall_info, assign, 1); |
48474141 PT |
4824 | gfc_add_expr_to_block (&block, tmp); |
4825 | break; | |
4826 | ||
6de9cd9a | 4827 | default: |
6e45f57b | 4828 | gcc_unreachable (); |
6de9cd9a DN |
4829 | } |
4830 | ||
4831 | c = c->next; | |
4832 | } | |
4833 | ||
8c6a85e3 | 4834 | done: |
7b5b57b7 PB |
4835 | /* Restore the original index variables. */ |
4836 | for (fa = code->ext.forall_iterator, n = 0; fa; fa = fa->next, n++) | |
4837 | gfc_restore_sym (fa->var->symtree->n.sym, &saved_vars[n]); | |
6de9cd9a DN |
4838 | |
4839 | /* Free the space for var, start, end, step, varexpr. */ | |
cede9502 JM |
4840 | free (var); |
4841 | free (start); | |
4842 | free (end); | |
4843 | free (step); | |
4844 | free (varexpr); | |
4845 | free (saved_vars); | |
6de9cd9a | 4846 | |
3231fe90 MM |
4847 | for (this_forall = info->this_loop; this_forall;) |
4848 | { | |
4849 | iter_info *next = this_forall->next; | |
cede9502 | 4850 | free (this_forall); |
3231fe90 MM |
4851 | this_forall = next; |
4852 | } | |
4853 | ||
e8d366ec | 4854 | /* Free the space for this forall_info. */ |
cede9502 | 4855 | free (info); |
e8d366ec | 4856 | |
6de9cd9a DN |
4857 | if (pmask) |
4858 | { | |
4859 | /* Free the temporary for the mask. */ | |
1529b8d9 | 4860 | tmp = gfc_call_free (pmask); |
6de9cd9a DN |
4861 | gfc_add_expr_to_block (&block, tmp); |
4862 | } | |
4863 | if (maskindex) | |
4864 | pushdecl (maskindex); | |
4865 | ||
640670c7 PT |
4866 | gfc_add_block_to_block (&pre, &block); |
4867 | gfc_add_block_to_block (&pre, &post); | |
4868 | ||
4869 | return gfc_finish_block (&pre); | |
6de9cd9a DN |
4870 | } |
4871 | ||
4872 | ||
4873 | /* Translate the FORALL statement or construct. */ | |
4874 | ||
4875 | tree gfc_trans_forall (gfc_code * code) | |
4876 | { | |
4877 | return gfc_trans_forall_1 (code, NULL); | |
4878 | } | |
4879 | ||
4880 | ||
8c6a85e3 TB |
4881 | /* Translate the DO CONCURRENT construct. */ |
4882 | ||
4883 | tree gfc_trans_do_concurrent (gfc_code * code) | |
4884 | { | |
4885 | return gfc_trans_forall_1 (code, NULL); | |
4886 | } | |
4887 | ||
4888 | ||
6de9cd9a DN |
4889 | /* Evaluate the WHERE mask expression, copy its value to a temporary. |
4890 | If the WHERE construct is nested in FORALL, compute the overall temporary | |
4891 | needed by the WHERE mask expression multiplied by the iterator number of | |
4892 | the nested forall. | |
4893 | ME is the WHERE mask expression. | |
011daa76 RS |
4894 | MASK is the current execution mask upon input, whose sense may or may |
4895 | not be inverted as specified by the INVERT argument. | |
3891cee2 RS |
4896 | CMASK is the updated execution mask on output, or NULL if not required. |
4897 | PMASK is the pending execution mask on output, or NULL if not required. | |
4898 | BLOCK is the block in which to place the condition evaluation loops. */ | |
6de9cd9a | 4899 | |
3891cee2 | 4900 | static void |
6de9cd9a | 4901 | gfc_evaluate_where_mask (gfc_expr * me, forall_info * nested_forall_info, |
011daa76 | 4902 | tree mask, bool invert, tree cmask, tree pmask, |
3891cee2 | 4903 | tree mask_type, stmtblock_t * block) |
6de9cd9a DN |
4904 | { |
4905 | tree tmp, tmp1; | |
4906 | gfc_ss *lss, *rss; | |
4907 | gfc_loopinfo loop; | |
3891cee2 RS |
4908 | stmtblock_t body, body1; |
4909 | tree count, cond, mtmp; | |
6de9cd9a | 4910 | gfc_se lse, rse; |
6de9cd9a DN |
4911 | |
4912 | gfc_init_loopinfo (&loop); | |
4913 | ||
3891cee2 RS |
4914 | lss = gfc_walk_expr (me); |
4915 | rss = gfc_walk_expr (me); | |
6de9cd9a DN |
4916 | |
4917 | /* Variable to index the temporary. */ | |
4918 | count = gfc_create_var (gfc_array_index_type, "count"); | |
1f2959f0 | 4919 | /* Initialize count. */ |
726a989a | 4920 | gfc_add_modify (block, count, gfc_index_zero_node); |
6de9cd9a DN |
4921 | |
4922 | gfc_start_block (&body); | |
4923 | ||
4924 | gfc_init_se (&rse, NULL); | |
4925 | gfc_init_se (&lse, NULL); | |
4926 | ||
4927 | if (lss == gfc_ss_terminator) | |
4928 | { | |
4929 | gfc_init_block (&body1); | |
4930 | } | |
4931 | else | |
4932 | { | |
1f2959f0 | 4933 | /* Initialize the loop. */ |
6de9cd9a DN |
4934 | gfc_init_loopinfo (&loop); |
4935 | ||
4936 | /* We may need LSS to determine the shape of the expression. */ | |
4937 | gfc_add_ss_to_loop (&loop, lss); | |
4938 | gfc_add_ss_to_loop (&loop, rss); | |
4939 | ||
4940 | gfc_conv_ss_startstride (&loop); | |
bdfd2ff0 | 4941 | gfc_conv_loop_setup (&loop, &me->where); |
6de9cd9a DN |
4942 | |
4943 | gfc_mark_ss_chain_used (rss, 1); | |
4944 | /* Start the loop body. */ | |
4945 | gfc_start_scalarized_body (&loop, &body1); | |
4946 | ||
4947 | /* Translate the expression. */ | |
4948 | gfc_copy_loopinfo_to_se (&rse, &loop); | |
4949 | rse.ss = rss; | |
4950 | gfc_conv_expr (&rse, me); | |
4951 | } | |
6de9cd9a | 4952 | |
b82feea5 | 4953 | /* Variable to evaluate mask condition. */ |
3891cee2 RS |
4954 | cond = gfc_create_var (mask_type, "cond"); |
4955 | if (mask && (cmask || pmask)) | |
4956 | mtmp = gfc_create_var (mask_type, "mask"); | |
4957 | else mtmp = NULL_TREE; | |
4958 | ||
4959 | gfc_add_block_to_block (&body1, &lse.pre); | |
4960 | gfc_add_block_to_block (&body1, &rse.pre); | |
6de9cd9a | 4961 | |
726a989a | 4962 | gfc_add_modify (&body1, cond, fold_convert (mask_type, rse.expr)); |
3891cee2 RS |
4963 | |
4964 | if (mask && (cmask || pmask)) | |
42e73749 | 4965 | { |
1d6b7f39 | 4966 | tmp = gfc_build_array_ref (mask, count, NULL); |
011daa76 | 4967 | if (invert) |
bc98ed60 | 4968 | tmp = fold_build1_loc (input_location, TRUTH_NOT_EXPR, mask_type, tmp); |
726a989a | 4969 | gfc_add_modify (&body1, mtmp, tmp); |
42e73749 | 4970 | } |
6de9cd9a | 4971 | |
3891cee2 RS |
4972 | if (cmask) |
4973 | { | |
1d6b7f39 | 4974 | tmp1 = gfc_build_array_ref (cmask, count, NULL); |
3891cee2 RS |
4975 | tmp = cond; |
4976 | if (mask) | |
bc98ed60 TB |
4977 | tmp = fold_build2_loc (input_location, TRUTH_AND_EXPR, mask_type, |
4978 | mtmp, tmp); | |
726a989a | 4979 | gfc_add_modify (&body1, tmp1, tmp); |
3891cee2 RS |
4980 | } |
4981 | ||
4982 | if (pmask) | |
4983 | { | |
1d6b7f39 | 4984 | tmp1 = gfc_build_array_ref (pmask, count, NULL); |
bc98ed60 | 4985 | tmp = fold_build1_loc (input_location, TRUTH_NOT_EXPR, mask_type, cond); |
3891cee2 | 4986 | if (mask) |
bc98ed60 TB |
4987 | tmp = fold_build2_loc (input_location, TRUTH_AND_EXPR, mask_type, mtmp, |
4988 | tmp); | |
726a989a | 4989 | gfc_add_modify (&body1, tmp1, tmp); |
3891cee2 RS |
4990 | } |
4991 | ||
4992 | gfc_add_block_to_block (&body1, &lse.post); | |
4993 | gfc_add_block_to_block (&body1, &rse.post); | |
4994 | ||
4995 | if (lss == gfc_ss_terminator) | |
6de9cd9a DN |
4996 | { |
4997 | gfc_add_block_to_block (&body, &body1); | |
4998 | } | |
4999 | else | |
5000 | { | |
5001 | /* Increment count. */ | |
bc98ed60 TB |
5002 | tmp1 = fold_build2_loc (input_location, PLUS_EXPR, gfc_array_index_type, |
5003 | count, gfc_index_one_node); | |
726a989a | 5004 | gfc_add_modify (&body1, count, tmp1); |
6de9cd9a DN |
5005 | |
5006 | /* Generate the copying loops. */ | |
5007 | gfc_trans_scalarizing_loops (&loop, &body1); | |
5008 | ||
5009 | gfc_add_block_to_block (&body, &loop.pre); | |
5010 | gfc_add_block_to_block (&body, &loop.post); | |
5011 | ||
5012 | gfc_cleanup_loop (&loop); | |
5013 | /* TODO: Reuse lss and rss when copying temp->lhs. Need to be careful | |
5014 | as tree nodes in SS may not be valid in different scope. */ | |
5015 | } | |
5016 | ||
5017 | tmp1 = gfc_finish_block (&body); | |
5018 | /* If the WHERE construct is inside FORALL, fill the full temporary. */ | |
5019 | if (nested_forall_info != NULL) | |
bfcabc6c | 5020 | tmp1 = gfc_trans_nested_forall_loop (nested_forall_info, tmp1, 1); |
6de9cd9a DN |
5021 | |
5022 | gfc_add_expr_to_block (block, tmp1); | |
6de9cd9a DN |
5023 | } |
5024 | ||
5025 | ||
5026 | /* Translate an assignment statement in a WHERE statement or construct | |
5027 | statement. The MASK expression is used to control which elements | |
011daa76 RS |
5028 | of EXPR1 shall be assigned. The sense of MASK is specified by |
5029 | INVERT. */ | |
6de9cd9a DN |
5030 | |
5031 | static tree | |
011daa76 RS |
5032 | gfc_trans_where_assign (gfc_expr *expr1, gfc_expr *expr2, |
5033 | tree mask, bool invert, | |
a00b8d1a | 5034 | tree count1, tree count2, |
eb74e79b | 5035 | gfc_code *cnext) |
6de9cd9a DN |
5036 | { |
5037 | gfc_se lse; | |
5038 | gfc_se rse; | |
5039 | gfc_ss *lss; | |
5040 | gfc_ss *lss_section; | |
5041 | gfc_ss *rss; | |
5042 | ||
5043 | gfc_loopinfo loop; | |
5044 | tree tmp; | |
5045 | stmtblock_t block; | |
5046 | stmtblock_t body; | |
3c90c9ae | 5047 | tree index, maskexpr; |
6de9cd9a | 5048 | |
1cc0e193 | 5049 | /* A defined assignment. */ |
eb74e79b PT |
5050 | if (cnext && cnext->resolved_sym) |
5051 | return gfc_trans_call (cnext, true, mask, count1, invert); | |
5052 | ||
6de9cd9a DN |
5053 | #if 0 |
5054 | /* TODO: handle this special case. | |
5055 | Special case a single function returning an array. */ | |
5056 | if (expr2->expr_type == EXPR_FUNCTION && expr2->rank > 0) | |
5057 | { | |
5058 | tmp = gfc_trans_arrayfunc_assign (expr1, expr2); | |
5059 | if (tmp) | |
5060 | return tmp; | |
5061 | } | |
5062 | #endif | |
5063 | ||
5064 | /* Assignment of the form lhs = rhs. */ | |
5065 | gfc_start_block (&block); | |
5066 | ||
5067 | gfc_init_se (&lse, NULL); | |
5068 | gfc_init_se (&rse, NULL); | |
5069 | ||
5070 | /* Walk the lhs. */ | |
5071 | lss = gfc_walk_expr (expr1); | |
5072 | rss = NULL; | |
5073 | ||
5074 | /* In each where-assign-stmt, the mask-expr and the variable being | |
5075 | defined shall be arrays of the same shape. */ | |
6e45f57b | 5076 | gcc_assert (lss != gfc_ss_terminator); |
6de9cd9a DN |
5077 | |
5078 | /* The assignment needs scalarization. */ | |
5079 | lss_section = lss; | |
5080 | ||
5081 | /* Find a non-scalar SS from the lhs. */ | |
5082 | while (lss_section != gfc_ss_terminator | |
bcc4d4e0 | 5083 | && lss_section->info->type != GFC_SS_SECTION) |
6de9cd9a DN |
5084 | lss_section = lss_section->next; |
5085 | ||
6e45f57b | 5086 | gcc_assert (lss_section != gfc_ss_terminator); |
6de9cd9a DN |
5087 | |
5088 | /* Initialize the scalarizer. */ | |
5089 | gfc_init_loopinfo (&loop); | |
5090 | ||
5091 | /* Walk the rhs. */ | |
5092 | rss = gfc_walk_expr (expr2); | |
5093 | if (rss == gfc_ss_terminator) | |
26f77530 MM |
5094 | { |
5095 | /* The rhs is scalar. Add a ss for the expression. */ | |
5096 | rss = gfc_get_scalar_ss (gfc_ss_terminator, expr2); | |
42d0058e | 5097 | rss->info->where = 1; |
6de9cd9a DN |
5098 | } |
5099 | ||
5100 | /* Associate the SS with the loop. */ | |
5101 | gfc_add_ss_to_loop (&loop, lss); | |
5102 | gfc_add_ss_to_loop (&loop, rss); | |
5103 | ||
5104 | /* Calculate the bounds of the scalarization. */ | |
5105 | gfc_conv_ss_startstride (&loop); | |
5106 | ||
5107 | /* Resolve any data dependencies in the statement. */ | |
5108 | gfc_conv_resolve_dependencies (&loop, lss_section, rss); | |
5109 | ||
5110 | /* Setup the scalarizing loops. */ | |
bdfd2ff0 | 5111 | gfc_conv_loop_setup (&loop, &expr2->where); |
6de9cd9a DN |
5112 | |
5113 | /* Setup the gfc_se structures. */ | |
5114 | gfc_copy_loopinfo_to_se (&lse, &loop); | |
5115 | gfc_copy_loopinfo_to_se (&rse, &loop); | |
5116 | ||
5117 | rse.ss = rss; | |
5118 | gfc_mark_ss_chain_used (rss, 1); | |
5119 | if (loop.temp_ss == NULL) | |
5120 | { | |
5121 | lse.ss = lss; | |
5122 | gfc_mark_ss_chain_used (lss, 1); | |
5123 | } | |
5124 | else | |
5125 | { | |
5126 | lse.ss = loop.temp_ss; | |
5127 | gfc_mark_ss_chain_used (lss, 3); | |
5128 | gfc_mark_ss_chain_used (loop.temp_ss, 3); | |
5129 | } | |
5130 | ||
5131 | /* Start the scalarized loop body. */ | |
5132 | gfc_start_scalarized_body (&loop, &body); | |
5133 | ||
5134 | /* Translate the expression. */ | |
5135 | gfc_conv_expr (&rse, expr2); | |
5136 | if (lss != gfc_ss_terminator && loop.temp_ss != NULL) | |
3db5d687 | 5137 | gfc_conv_tmp_array_ref (&lse); |
6de9cd9a DN |
5138 | else |
5139 | gfc_conv_expr (&lse, expr1); | |
5140 | ||
3c90c9ae | 5141 | /* Form the mask expression according to the mask. */ |
6de9cd9a | 5142 | index = count1; |
1d6b7f39 | 5143 | maskexpr = gfc_build_array_ref (mask, index, NULL); |
011daa76 | 5144 | if (invert) |
bc98ed60 TB |
5145 | maskexpr = fold_build1_loc (input_location, TRUTH_NOT_EXPR, |
5146 | TREE_TYPE (maskexpr), maskexpr); | |
6de9cd9a | 5147 | |
6de9cd9a | 5148 | /* Use the scalar assignment as is. */ |
eb74e79b | 5149 | tmp = gfc_trans_scalar_assign (&lse, &rse, expr1->ts, |
ed673c00 | 5150 | false, loop.temp_ss == NULL); |
a00b8d1a | 5151 | |
c2255bc4 | 5152 | tmp = build3_v (COND_EXPR, maskexpr, tmp, build_empty_stmt (input_location)); |
6de9cd9a DN |
5153 | |
5154 | gfc_add_expr_to_block (&body, tmp); | |
5155 | ||
5156 | if (lss == gfc_ss_terminator) | |
5157 | { | |
5158 | /* Increment count1. */ | |
bc98ed60 TB |
5159 | tmp = fold_build2_loc (input_location, PLUS_EXPR, gfc_array_index_type, |
5160 | count1, gfc_index_one_node); | |
726a989a | 5161 | gfc_add_modify (&body, count1, tmp); |
6de9cd9a DN |
5162 | |
5163 | /* Use the scalar assignment as is. */ | |
5164 | gfc_add_block_to_block (&block, &body); | |
5165 | } | |
5166 | else | |
5167 | { | |
6e45f57b PB |
5168 | gcc_assert (lse.ss == gfc_ss_terminator |
5169 | && rse.ss == gfc_ss_terminator); | |
6de9cd9a DN |
5170 | |
5171 | if (loop.temp_ss != NULL) | |
5172 | { | |
5173 | /* Increment count1 before finish the main body of a scalarized | |
5174 | expression. */ | |
bc98ed60 TB |
5175 | tmp = fold_build2_loc (input_location, PLUS_EXPR, |
5176 | gfc_array_index_type, count1, gfc_index_one_node); | |
726a989a | 5177 | gfc_add_modify (&body, count1, tmp); |
6de9cd9a DN |
5178 | gfc_trans_scalarized_loop_boundary (&loop, &body); |
5179 | ||
5180 | /* We need to copy the temporary to the actual lhs. */ | |
5181 | gfc_init_se (&lse, NULL); | |
5182 | gfc_init_se (&rse, NULL); | |
5183 | gfc_copy_loopinfo_to_se (&lse, &loop); | |
5184 | gfc_copy_loopinfo_to_se (&rse, &loop); | |
5185 | ||
5186 | rse.ss = loop.temp_ss; | |
5187 | lse.ss = lss; | |
5188 | ||
5189 | gfc_conv_tmp_array_ref (&rse); | |
6de9cd9a DN |
5190 | gfc_conv_expr (&lse, expr1); |
5191 | ||
6e45f57b PB |
5192 | gcc_assert (lse.ss == gfc_ss_terminator |
5193 | && rse.ss == gfc_ss_terminator); | |
6de9cd9a DN |
5194 | |
5195 | /* Form the mask expression according to the mask tree list. */ | |
5196 | index = count2; | |
1d6b7f39 | 5197 | maskexpr = gfc_build_array_ref (mask, index, NULL); |
011daa76 | 5198 | if (invert) |
bc98ed60 TB |
5199 | maskexpr = fold_build1_loc (input_location, TRUTH_NOT_EXPR, |
5200 | TREE_TYPE (maskexpr), maskexpr); | |
6de9cd9a | 5201 | |
6de9cd9a | 5202 | /* Use the scalar assignment as is. */ |
ed673c00 | 5203 | tmp = gfc_trans_scalar_assign (&lse, &rse, expr1->ts, false, true); |
c2255bc4 AH |
5204 | tmp = build3_v (COND_EXPR, maskexpr, tmp, |
5205 | build_empty_stmt (input_location)); | |
6de9cd9a | 5206 | gfc_add_expr_to_block (&body, tmp); |
7ab92584 | 5207 | |
6de9cd9a | 5208 | /* Increment count2. */ |
bc98ed60 TB |
5209 | tmp = fold_build2_loc (input_location, PLUS_EXPR, |
5210 | gfc_array_index_type, count2, | |
5211 | gfc_index_one_node); | |
726a989a | 5212 | gfc_add_modify (&body, count2, tmp); |
6de9cd9a DN |
5213 | } |
5214 | else | |
5215 | { | |
5216 | /* Increment count1. */ | |
bc98ed60 TB |
5217 | tmp = fold_build2_loc (input_location, PLUS_EXPR, |
5218 | gfc_array_index_type, count1, | |
5219 | gfc_index_one_node); | |
726a989a | 5220 | gfc_add_modify (&body, count1, tmp); |
6de9cd9a DN |
5221 | } |
5222 | ||
5223 | /* Generate the copying loops. */ | |
5224 | gfc_trans_scalarizing_loops (&loop, &body); | |
5225 | ||
5226 | /* Wrap the whole thing up. */ | |
5227 | gfc_add_block_to_block (&block, &loop.pre); | |
5228 | gfc_add_block_to_block (&block, &loop.post); | |
5229 | gfc_cleanup_loop (&loop); | |
5230 | } | |
5231 | ||
5232 | return gfc_finish_block (&block); | |
5233 | } | |
5234 | ||
5235 | ||
5236 | /* Translate the WHERE construct or statement. | |
aa9c57ec | 5237 | This function can be called iteratively to translate the nested WHERE |
6de9cd9a | 5238 | construct or statement. |
3891cee2 | 5239 | MASK is the control mask. */ |
6de9cd9a DN |
5240 | |
5241 | static void | |
011daa76 | 5242 | gfc_trans_where_2 (gfc_code * code, tree mask, bool invert, |
3891cee2 | 5243 | forall_info * nested_forall_info, stmtblock_t * block) |
6de9cd9a | 5244 | { |
3891cee2 RS |
5245 | stmtblock_t inner_size_body; |
5246 | tree inner_size, size; | |
5247 | gfc_ss *lss, *rss; | |
5248 | tree mask_type; | |
6de9cd9a DN |
5249 | gfc_expr *expr1; |
5250 | gfc_expr *expr2; | |
5251 | gfc_code *cblock; | |
5252 | gfc_code *cnext; | |
3891cee2 | 5253 | tree tmp; |
ae772c2d | 5254 | tree cond; |
6de9cd9a | 5255 | tree count1, count2; |
011daa76 RS |
5256 | bool need_cmask; |
5257 | bool need_pmask; | |
6de9cd9a | 5258 | int need_temp; |
3891cee2 RS |
5259 | tree pcmask = NULL_TREE; |
5260 | tree ppmask = NULL_TREE; | |
5261 | tree cmask = NULL_TREE; | |
5262 | tree pmask = NULL_TREE; | |
a00b8d1a | 5263 | gfc_actual_arglist *arg; |
6de9cd9a DN |
5264 | |
5265 | /* the WHERE statement or the WHERE construct statement. */ | |
5266 | cblock = code->block; | |
3891cee2 | 5267 | |
3891cee2 RS |
5268 | /* As the mask array can be very big, prefer compact boolean types. */ |
5269 | mask_type = gfc_get_logical_type (gfc_logical_kinds[0].kind); | |
5270 | ||
011daa76 RS |
5271 | /* Determine which temporary masks are needed. */ |
5272 | if (!cblock->block) | |
90f58ec8 | 5273 | { |
011daa76 RS |
5274 | /* One clause: No ELSEWHEREs. */ |
5275 | need_cmask = (cblock->next != 0); | |
5276 | need_pmask = false; | |
90f58ec8 | 5277 | } |
011daa76 | 5278 | else if (cblock->block->block) |
90f58ec8 | 5279 | { |
011daa76 RS |
5280 | /* Three or more clauses: Conditional ELSEWHEREs. */ |
5281 | need_cmask = true; | |
5282 | need_pmask = true; | |
90f58ec8 | 5283 | } |
011daa76 RS |
5284 | else if (cblock->next) |
5285 | { | |
5286 | /* Two clauses, the first non-empty. */ | |
5287 | need_cmask = true; | |
5288 | need_pmask = (mask != NULL_TREE | |
5289 | && cblock->block->next != 0); | |
5290 | } | |
5291 | else if (!cblock->block->next) | |
3891cee2 | 5292 | { |
011daa76 RS |
5293 | /* Two clauses, both empty. */ |
5294 | need_cmask = false; | |
5295 | need_pmask = false; | |
5296 | } | |
5297 | /* Two clauses, the first empty, the second non-empty. */ | |
5298 | else if (mask) | |
5299 | { | |
a513927a | 5300 | need_cmask = (cblock->block->expr1 != 0); |
011daa76 | 5301 | need_pmask = true; |
3891cee2 RS |
5302 | } |
5303 | else | |
5304 | { | |
011daa76 RS |
5305 | need_cmask = true; |
5306 | need_pmask = false; | |
5307 | } | |
5308 | ||
5309 | if (need_cmask || need_pmask) | |
5310 | { | |
5311 | /* Calculate the size of temporary needed by the mask-expr. */ | |
5312 | gfc_init_block (&inner_size_body); | |
a513927a | 5313 | inner_size = compute_inner_temp_size (cblock->expr1, cblock->expr1, |
011daa76 RS |
5314 | &inner_size_body, &lss, &rss); |
5315 | ||
fcba5509 MM |
5316 | gfc_free_ss_chain (lss); |
5317 | gfc_free_ss_chain (rss); | |
5318 | ||
011daa76 RS |
5319 | /* Calculate the total size of temporary needed. */ |
5320 | size = compute_overall_iter_number (nested_forall_info, inner_size, | |
5321 | &inner_size_body, block); | |
5322 | ||
ae772c2d | 5323 | /* Check whether the size is negative. */ |
63ee5404 | 5324 | cond = fold_build2_loc (input_location, LE_EXPR, logical_type_node, size, |
bc98ed60 TB |
5325 | gfc_index_zero_node); |
5326 | size = fold_build3_loc (input_location, COND_EXPR, gfc_array_index_type, | |
5327 | cond, gfc_index_zero_node, size); | |
ae772c2d PT |
5328 | size = gfc_evaluate_now (size, block); |
5329 | ||
011daa76 RS |
5330 | /* Allocate temporary for WHERE mask if needed. */ |
5331 | if (need_cmask) | |
5332 | cmask = allocate_temp_for_forall_nest_1 (mask_type, size, block, | |
5333 | &pcmask); | |
5334 | ||
5335 | /* Allocate temporary for !mask if needed. */ | |
5336 | if (need_pmask) | |
5337 | pmask = allocate_temp_for_forall_nest_1 (mask_type, size, block, | |
5338 | &ppmask); | |
3891cee2 RS |
5339 | } |
5340 | ||
6de9cd9a DN |
5341 | while (cblock) |
5342 | { | |
011daa76 RS |
5343 | /* Each time around this loop, the where clause is conditional |
5344 | on the value of mask and invert, which are updated at the | |
5345 | bottom of the loop. */ | |
5346 | ||
6de9cd9a | 5347 | /* Has mask-expr. */ |
a513927a | 5348 | if (cblock->expr1) |
6de9cd9a | 5349 | { |
90f58ec8 RS |
5350 | /* Ensure that the WHERE mask will be evaluated exactly once. |
5351 | If there are no statements in this WHERE/ELSEWHERE clause, | |
5352 | then we don't need to update the control mask (cmask). | |
5353 | If this is the last clause of the WHERE construct, then | |
3891cee2 | 5354 | we don't need to update the pending control mask (pmask). */ |
011daa76 | 5355 | if (mask) |
a513927a | 5356 | gfc_evaluate_where_mask (cblock->expr1, nested_forall_info, |
011daa76 RS |
5357 | mask, invert, |
5358 | cblock->next ? cmask : NULL_TREE, | |
5359 | cblock->block ? pmask : NULL_TREE, | |
5360 | mask_type, block); | |
5361 | else | |
a513927a | 5362 | gfc_evaluate_where_mask (cblock->expr1, nested_forall_info, |
011daa76 RS |
5363 | NULL_TREE, false, |
5364 | (cblock->next || cblock->block) | |
5365 | ? cmask : NULL_TREE, | |
5366 | NULL_TREE, mask_type, block); | |
6de9cd9a | 5367 | |
011daa76 | 5368 | invert = false; |
6de9cd9a | 5369 | } |
90f58ec8 | 5370 | /* It's a final elsewhere-stmt. No mask-expr is present. */ |
6de9cd9a | 5371 | else |
3891cee2 | 5372 | cmask = mask; |
6de9cd9a | 5373 | |
011daa76 RS |
5374 | /* The body of this where clause are controlled by cmask with |
5375 | sense specified by invert. */ | |
5376 | ||
6de9cd9a DN |
5377 | /* Get the assignment statement of a WHERE statement, or the first |
5378 | statement in where-body-construct of a WHERE construct. */ | |
5379 | cnext = cblock->next; | |
5380 | while (cnext) | |
5381 | { | |
5382 | switch (cnext->op) | |
5383 | { | |
5384 | /* WHERE assignment statement. */ | |
a00b8d1a PT |
5385 | case EXEC_ASSIGN_CALL: |
5386 | ||
5387 | arg = cnext->ext.actual; | |
5388 | expr1 = expr2 = NULL; | |
5389 | for (; arg; arg = arg->next) | |
5390 | { | |
5391 | if (!arg->expr) | |
5392 | continue; | |
5393 | if (expr1 == NULL) | |
5394 | expr1 = arg->expr; | |
5395 | else | |
5396 | expr2 = arg->expr; | |
5397 | } | |
5398 | goto evaluate; | |
5399 | ||
6de9cd9a | 5400 | case EXEC_ASSIGN: |
a513927a | 5401 | expr1 = cnext->expr1; |
6de9cd9a | 5402 | expr2 = cnext->expr2; |
a00b8d1a | 5403 | evaluate: |
6de9cd9a DN |
5404 | if (nested_forall_info != NULL) |
5405 | { | |
3ded6210 | 5406 | need_temp = gfc_check_dependency (expr1, expr2, 0); |
7bd5dad2 LK |
5407 | if ((need_temp || flag_test_forall_temp) |
5408 | && cnext->op != EXEC_ASSIGN_CALL) | |
011daa76 RS |
5409 | gfc_trans_assign_need_temp (expr1, expr2, |
5410 | cmask, invert, | |
6de9cd9a DN |
5411 | nested_forall_info, block); |
5412 | else | |
5413 | { | |
5414 | /* Variables to control maskexpr. */ | |
5415 | count1 = gfc_create_var (gfc_array_index_type, "count1"); | |
5416 | count2 = gfc_create_var (gfc_array_index_type, "count2"); | |
726a989a RB |
5417 | gfc_add_modify (block, count1, gfc_index_zero_node); |
5418 | gfc_add_modify (block, count2, gfc_index_zero_node); | |
6de9cd9a | 5419 | |
011daa76 RS |
5420 | tmp = gfc_trans_where_assign (expr1, expr2, |
5421 | cmask, invert, | |
a00b8d1a | 5422 | count1, count2, |
eb74e79b | 5423 | cnext); |
8de1f441 | 5424 | |
6de9cd9a | 5425 | tmp = gfc_trans_nested_forall_loop (nested_forall_info, |
bfcabc6c | 5426 | tmp, 1); |
6de9cd9a DN |
5427 | gfc_add_expr_to_block (block, tmp); |
5428 | } | |
5429 | } | |
5430 | else | |
5431 | { | |
5432 | /* Variables to control maskexpr. */ | |
5433 | count1 = gfc_create_var (gfc_array_index_type, "count1"); | |
5434 | count2 = gfc_create_var (gfc_array_index_type, "count2"); | |
726a989a RB |
5435 | gfc_add_modify (block, count1, gfc_index_zero_node); |
5436 | gfc_add_modify (block, count2, gfc_index_zero_node); | |
6de9cd9a | 5437 | |
011daa76 RS |
5438 | tmp = gfc_trans_where_assign (expr1, expr2, |
5439 | cmask, invert, | |
a00b8d1a | 5440 | count1, count2, |
eb74e79b | 5441 | cnext); |
6de9cd9a DN |
5442 | gfc_add_expr_to_block (block, tmp); |
5443 | ||
5444 | } | |
5445 | break; | |
5446 | ||
5447 | /* WHERE or WHERE construct is part of a where-body-construct. */ | |
5448 | case EXEC_WHERE: | |
011daa76 RS |
5449 | gfc_trans_where_2 (cnext, cmask, invert, |
5450 | nested_forall_info, block); | |
3891cee2 | 5451 | break; |
6de9cd9a DN |
5452 | |
5453 | default: | |
6e45f57b | 5454 | gcc_unreachable (); |
6de9cd9a DN |
5455 | } |
5456 | ||
5457 | /* The next statement within the same where-body-construct. */ | |
5458 | cnext = cnext->next; | |
5459 | } | |
5460 | /* The next masked-elsewhere-stmt, elsewhere-stmt, or end-where-stmt. */ | |
5461 | cblock = cblock->block; | |
011daa76 RS |
5462 | if (mask == NULL_TREE) |
5463 | { | |
5464 | /* If we're the initial WHERE, we can simply invert the sense | |
5465 | of the current mask to obtain the "mask" for the remaining | |
5466 | ELSEWHEREs. */ | |
5467 | invert = true; | |
5468 | mask = cmask; | |
5469 | } | |
5470 | else | |
5471 | { | |
5472 | /* Otherwise, for nested WHERE's we need to use the pending mask. */ | |
5473 | invert = false; | |
5474 | mask = pmask; | |
5475 | } | |
6de9cd9a | 5476 | } |
3891cee2 RS |
5477 | |
5478 | /* If we allocated a pending mask array, deallocate it now. */ | |
5479 | if (ppmask) | |
5480 | { | |
1529b8d9 | 5481 | tmp = gfc_call_free (ppmask); |
3891cee2 RS |
5482 | gfc_add_expr_to_block (block, tmp); |
5483 | } | |
5484 | ||
5485 | /* If we allocated a current mask array, deallocate it now. */ | |
5486 | if (pcmask) | |
5487 | { | |
1529b8d9 | 5488 | tmp = gfc_call_free (pcmask); |
3891cee2 RS |
5489 | gfc_add_expr_to_block (block, tmp); |
5490 | } | |
6de9cd9a DN |
5491 | } |
5492 | ||
3ded6210 RS |
5493 | /* Translate a simple WHERE construct or statement without dependencies. |
5494 | CBLOCK is the "then" clause of the WHERE statement, where CBLOCK->EXPR | |
5495 | is the mask condition, and EBLOCK if non-NULL is the "else" clause. | |
5496 | Currently both CBLOCK and EBLOCK are restricted to single assignments. */ | |
5497 | ||
5498 | static tree | |
5499 | gfc_trans_where_3 (gfc_code * cblock, gfc_code * eblock) | |
5500 | { | |
5501 | stmtblock_t block, body; | |
5502 | gfc_expr *cond, *tdst, *tsrc, *edst, *esrc; | |
5503 | tree tmp, cexpr, tstmt, estmt; | |
5504 | gfc_ss *css, *tdss, *tsss; | |
5505 | gfc_se cse, tdse, tsse, edse, esse; | |
5506 | gfc_loopinfo loop; | |
5507 | gfc_ss *edss = 0; | |
5508 | gfc_ss *esss = 0; | |
57bf3072 | 5509 | bool maybe_workshare = false; |
3ded6210 | 5510 | |
34d01e1d | 5511 | /* Allow the scalarizer to workshare simple where loops. */ |
57bf3072 JJ |
5512 | if ((ompws_flags & (OMPWS_WORKSHARE_FLAG | OMPWS_SCALARIZER_BODY)) |
5513 | == OMPWS_WORKSHARE_FLAG) | |
5514 | { | |
5515 | maybe_workshare = true; | |
5516 | ompws_flags |= OMPWS_SCALARIZER_WS | OMPWS_SCALARIZER_BODY; | |
5517 | } | |
34d01e1d | 5518 | |
a513927a SK |
5519 | cond = cblock->expr1; |
5520 | tdst = cblock->next->expr1; | |
3ded6210 | 5521 | tsrc = cblock->next->expr2; |
a513927a | 5522 | edst = eblock ? eblock->next->expr1 : NULL; |
3ded6210 RS |
5523 | esrc = eblock ? eblock->next->expr2 : NULL; |
5524 | ||
5525 | gfc_start_block (&block); | |
5526 | gfc_init_loopinfo (&loop); | |
5527 | ||
5528 | /* Handle the condition. */ | |
5529 | gfc_init_se (&cse, NULL); | |
5530 | css = gfc_walk_expr (cond); | |
5531 | gfc_add_ss_to_loop (&loop, css); | |
5532 | ||
5533 | /* Handle the then-clause. */ | |
5534 | gfc_init_se (&tdse, NULL); | |
5535 | gfc_init_se (&tsse, NULL); | |
5536 | tdss = gfc_walk_expr (tdst); | |
5537 | tsss = gfc_walk_expr (tsrc); | |
5538 | if (tsss == gfc_ss_terminator) | |
5539 | { | |
26f77530 | 5540 | tsss = gfc_get_scalar_ss (gfc_ss_terminator, tsrc); |
42d0058e | 5541 | tsss->info->where = 1; |
3ded6210 RS |
5542 | } |
5543 | gfc_add_ss_to_loop (&loop, tdss); | |
5544 | gfc_add_ss_to_loop (&loop, tsss); | |
5545 | ||
5546 | if (eblock) | |
5547 | { | |
5548 | /* Handle the else clause. */ | |
5549 | gfc_init_se (&edse, NULL); | |
5550 | gfc_init_se (&esse, NULL); | |
5551 | edss = gfc_walk_expr (edst); | |
5552 | esss = gfc_walk_expr (esrc); | |
5553 | if (esss == gfc_ss_terminator) | |
5554 | { | |
26f77530 | 5555 | esss = gfc_get_scalar_ss (gfc_ss_terminator, esrc); |
42d0058e | 5556 | esss->info->where = 1; |
3ded6210 RS |
5557 | } |
5558 | gfc_add_ss_to_loop (&loop, edss); | |
5559 | gfc_add_ss_to_loop (&loop, esss); | |
5560 | } | |
5561 | ||
5562 | gfc_conv_ss_startstride (&loop); | |
bdfd2ff0 | 5563 | gfc_conv_loop_setup (&loop, &tdst->where); |
3ded6210 RS |
5564 | |
5565 | gfc_mark_ss_chain_used (css, 1); | |
5566 | gfc_mark_ss_chain_used (tdss, 1); | |
5567 | gfc_mark_ss_chain_used (tsss, 1); | |
5568 | if (eblock) | |
5569 | { | |
5570 | gfc_mark_ss_chain_used (edss, 1); | |
5571 | gfc_mark_ss_chain_used (esss, 1); | |
5572 | } | |
5573 | ||
5574 | gfc_start_scalarized_body (&loop, &body); | |
5575 | ||
5576 | gfc_copy_loopinfo_to_se (&cse, &loop); | |
5577 | gfc_copy_loopinfo_to_se (&tdse, &loop); | |
5578 | gfc_copy_loopinfo_to_se (&tsse, &loop); | |
5579 | cse.ss = css; | |
5580 | tdse.ss = tdss; | |
5581 | tsse.ss = tsss; | |
5582 | if (eblock) | |
5583 | { | |
5584 | gfc_copy_loopinfo_to_se (&edse, &loop); | |
5585 | gfc_copy_loopinfo_to_se (&esse, &loop); | |
5586 | edse.ss = edss; | |
5587 | esse.ss = esss; | |
5588 | } | |
5589 | ||
5590 | gfc_conv_expr (&cse, cond); | |
5591 | gfc_add_block_to_block (&body, &cse.pre); | |
5592 | cexpr = cse.expr; | |
5593 | ||
5594 | gfc_conv_expr (&tsse, tsrc); | |
5595 | if (tdss != gfc_ss_terminator && loop.temp_ss != NULL) | |
3db5d687 | 5596 | gfc_conv_tmp_array_ref (&tdse); |
3ded6210 RS |
5597 | else |
5598 | gfc_conv_expr (&tdse, tdst); | |
5599 | ||
5600 | if (eblock) | |
5601 | { | |
5602 | gfc_conv_expr (&esse, esrc); | |
5603 | if (edss != gfc_ss_terminator && loop.temp_ss != NULL) | |
3db5d687 | 5604 | gfc_conv_tmp_array_ref (&edse); |
3ded6210 | 5605 | else |
3db5d687 | 5606 | gfc_conv_expr (&edse, edst); |
3ded6210 RS |
5607 | } |
5608 | ||
ed673c00 MM |
5609 | tstmt = gfc_trans_scalar_assign (&tdse, &tsse, tdst->ts, false, true); |
5610 | estmt = eblock ? gfc_trans_scalar_assign (&edse, &esse, edst->ts, | |
2b56d6a4 | 5611 | false, true) |
c2255bc4 | 5612 | : build_empty_stmt (input_location); |
3ded6210 RS |
5613 | tmp = build3_v (COND_EXPR, cexpr, tstmt, estmt); |
5614 | gfc_add_expr_to_block (&body, tmp); | |
5615 | gfc_add_block_to_block (&body, &cse.post); | |
5616 | ||
57bf3072 JJ |
5617 | if (maybe_workshare) |
5618 | ompws_flags &= ~OMPWS_SCALARIZER_BODY; | |
3ded6210 RS |
5619 | gfc_trans_scalarizing_loops (&loop, &body); |
5620 | gfc_add_block_to_block (&block, &loop.pre); | |
5621 | gfc_add_block_to_block (&block, &loop.post); | |
5622 | gfc_cleanup_loop (&loop); | |
5623 | ||
5624 | return gfc_finish_block (&block); | |
5625 | } | |
6de9cd9a DN |
5626 | |
5627 | /* As the WHERE or WHERE construct statement can be nested, we call | |
5628 | gfc_trans_where_2 to do the translation, and pass the initial | |
f7b529fa | 5629 | NULL values for both the control mask and the pending control mask. */ |
6de9cd9a DN |
5630 | |
5631 | tree | |
5632 | gfc_trans_where (gfc_code * code) | |
5633 | { | |
5634 | stmtblock_t block; | |
3ded6210 RS |
5635 | gfc_code *cblock; |
5636 | gfc_code *eblock; | |
6de9cd9a | 5637 | |
3ded6210 RS |
5638 | cblock = code->block; |
5639 | if (cblock->next | |
5640 | && cblock->next->op == EXEC_ASSIGN | |
5641 | && !cblock->next->next) | |
5642 | { | |
5643 | eblock = cblock->block; | |
5644 | if (!eblock) | |
5645 | { | |
5646 | /* A simple "WHERE (cond) x = y" statement or block is | |
5647 | dependence free if cond is not dependent upon writing x, | |
5648 | and the source y is unaffected by the destination x. */ | |
a513927a SK |
5649 | if (!gfc_check_dependency (cblock->next->expr1, |
5650 | cblock->expr1, 0) | |
5651 | && !gfc_check_dependency (cblock->next->expr1, | |
3ded6210 RS |
5652 | cblock->next->expr2, 0)) |
5653 | return gfc_trans_where_3 (cblock, NULL); | |
5654 | } | |
a513927a | 5655 | else if (!eblock->expr1 |
3ded6210 RS |
5656 | && !eblock->block |
5657 | && eblock->next | |
5658 | && eblock->next->op == EXEC_ASSIGN | |
5659 | && !eblock->next->next) | |
5660 | { | |
5661 | /* A simple "WHERE (cond) x1 = y1 ELSEWHERE x2 = y2 ENDWHERE" | |
5662 | block is dependence free if cond is not dependent on writes | |
5663 | to x1 and x2, y1 is not dependent on writes to x2, and y2 | |
5664 | is not dependent on writes to x1, and both y's are not | |
ae772c2d PT |
5665 | dependent upon their own x's. In addition to this, the |
5666 | final two dependency checks below exclude all but the same | |
5667 | array reference if the where and elswhere destinations | |
5668 | are the same. In short, this is VERY conservative and this | |
5669 | is needed because the two loops, required by the standard | |
5670 | are coalesced in gfc_trans_where_3. */ | |
524af0d6 | 5671 | if (!gfc_check_dependency (cblock->next->expr1, |
a513927a | 5672 | cblock->expr1, 0) |
524af0d6 | 5673 | && !gfc_check_dependency (eblock->next->expr1, |
a513927a | 5674 | cblock->expr1, 0) |
524af0d6 | 5675 | && !gfc_check_dependency (cblock->next->expr1, |
ae772c2d | 5676 | eblock->next->expr2, 1) |
524af0d6 | 5677 | && !gfc_check_dependency (eblock->next->expr1, |
ae772c2d | 5678 | cblock->next->expr2, 1) |
524af0d6 | 5679 | && !gfc_check_dependency (cblock->next->expr1, |
ae772c2d | 5680 | cblock->next->expr2, 1) |
524af0d6 | 5681 | && !gfc_check_dependency (eblock->next->expr1, |
ae772c2d | 5682 | eblock->next->expr2, 1) |
524af0d6 | 5683 | && !gfc_check_dependency (cblock->next->expr1, |
a513927a | 5684 | eblock->next->expr1, 0) |
524af0d6 | 5685 | && !gfc_check_dependency (eblock->next->expr1, |
a513927a | 5686 | cblock->next->expr1, 0)) |
3ded6210 RS |
5687 | return gfc_trans_where_3 (cblock, eblock); |
5688 | } | |
5689 | } | |
5690 | ||
6de9cd9a | 5691 | gfc_start_block (&block); |
6de9cd9a | 5692 | |
011daa76 | 5693 | gfc_trans_where_2 (code, NULL, false, NULL, &block); |
6de9cd9a | 5694 | |
6de9cd9a DN |
5695 | return gfc_finish_block (&block); |
5696 | } | |
5697 | ||
5698 | ||
5699 | /* CYCLE a DO loop. The label decl has already been created by | |
5700 | gfc_trans_do(), it's in TREE_PURPOSE (backend_decl) of the gfc_code | |
5701 | node at the head of the loop. We must mark the label as used. */ | |
5702 | ||
5703 | tree | |
5704 | gfc_trans_cycle (gfc_code * code) | |
5705 | { | |
5706 | tree cycle_label; | |
5707 | ||
e5ca9693 DK |
5708 | cycle_label = code->ext.which_construct->cycle_label; |
5709 | gcc_assert (cycle_label); | |
5710 | ||
6de9cd9a DN |
5711 | TREE_USED (cycle_label) = 1; |
5712 | return build1_v (GOTO_EXPR, cycle_label); | |
5713 | } | |
5714 | ||
5715 | ||
e7dc5b4f | 5716 | /* EXIT a DO loop. Similar to CYCLE, but now the label is in |
6de9cd9a DN |
5717 | TREE_VALUE (backend_decl) of the gfc_code node at the head of the |
5718 | loop. */ | |
5719 | ||
5720 | tree | |
5721 | gfc_trans_exit (gfc_code * code) | |
5722 | { | |
5723 | tree exit_label; | |
5724 | ||
e5ca9693 DK |
5725 | exit_label = code->ext.which_construct->exit_label; |
5726 | gcc_assert (exit_label); | |
5727 | ||
6de9cd9a DN |
5728 | TREE_USED (exit_label) = 1; |
5729 | return build1_v (GOTO_EXPR, exit_label); | |
5730 | } | |
5731 | ||
5732 | ||
cc03bf7a AV |
5733 | /* Get the initializer expression for the code and expr of an allocate. |
5734 | When no initializer is needed return NULL. */ | |
5735 | ||
5736 | static gfc_expr * | |
5737 | allocate_get_initializer (gfc_code * code, gfc_expr * expr) | |
5738 | { | |
5739 | if (!gfc_bt_struct (expr->ts.type) && expr->ts.type != BT_CLASS) | |
5740 | return NULL; | |
5741 | ||
5742 | /* An explicit type was given in allocate ( T:: object). */ | |
5743 | if (code->ext.alloc.ts.type == BT_DERIVED | |
5744 | && (code->ext.alloc.ts.u.derived->attr.alloc_comp | |
5745 | || gfc_has_default_initializer (code->ext.alloc.ts.u.derived))) | |
5746 | return gfc_default_initializer (&code->ext.alloc.ts); | |
5747 | ||
5748 | if (gfc_bt_struct (expr->ts.type) | |
5749 | && (expr->ts.u.derived->attr.alloc_comp | |
5750 | || gfc_has_default_initializer (expr->ts.u.derived))) | |
5751 | return gfc_default_initializer (&expr->ts); | |
5752 | ||
5753 | if (expr->ts.type == BT_CLASS | |
5754 | && (CLASS_DATA (expr)->ts.u.derived->attr.alloc_comp | |
5755 | || gfc_has_default_initializer (CLASS_DATA (expr)->ts.u.derived))) | |
5756 | return gfc_default_initializer (&CLASS_DATA (expr)->ts); | |
5757 | ||
5758 | return NULL; | |
5759 | } | |
5760 | ||
6de9cd9a DN |
5761 | /* Translate the ALLOCATE statement. */ |
5762 | ||
5763 | tree | |
5764 | gfc_trans_allocate (gfc_code * code) | |
5765 | { | |
5766 | gfc_alloc *al; | |
cc03bf7a | 5767 | gfc_expr *expr, *e3rhs = NULL, *init_expr; |
34d9d749 | 5768 | gfc_se se, se_sz; |
6de9cd9a DN |
5769 | tree tmp; |
5770 | tree parm; | |
6de9cd9a | 5771 | tree stat; |
8f992d64 DC |
5772 | tree errmsg; |
5773 | tree errlen; | |
5774 | tree label_errmsg; | |
5775 | tree label_finish; | |
60f5ed26 | 5776 | tree memsz; |
34d9d749 AV |
5777 | tree al_vptr, al_len; |
5778 | /* If an expr3 is present, then store the tree for accessing its | |
5779 | _vptr, and _len components in the variables, respectively. The | |
5780 | element size, i.e. _vptr%size, is stored in expr3_esize. Any of | |
5781 | the trees may be the NULL_TREE indicating that this is not | |
5782 | available for expr3's type. */ | |
5783 | tree expr3, expr3_vptr, expr3_len, expr3_esize; | |
1792349b AV |
5784 | /* Classify what expr3 stores. */ |
5785 | enum { E3_UNSET = 0, E3_SOURCE, E3_MOLD, E3_DESC } e3_is; | |
6de9cd9a | 5786 | stmtblock_t block; |
90cf3ecc | 5787 | stmtblock_t post; |
1312bb90 | 5788 | stmtblock_t final_block; |
4daa71b0 | 5789 | tree nelems; |
525a5e33 AV |
5790 | bool upoly_expr, tmp_expr3_len_flag = false, al_len_needs_set, is_coarray; |
5791 | bool needs_caf_sync, caf_refs_comp; | |
db7ffcab | 5792 | gfc_symtree *newsym = NULL; |
525a5e33 | 5793 | symbol_attribute caf_attr; |
5bab4c96 | 5794 | gfc_actual_arglist *param_list; |
6de9cd9a | 5795 | |
cf2b3c22 | 5796 | if (!code->ext.alloc.list) |
6de9cd9a DN |
5797 | return NULL_TREE; |
5798 | ||
34d9d749 AV |
5799 | stat = tmp = memsz = al_vptr = al_len = NULL_TREE; |
5800 | expr3 = expr3_vptr = expr3_len = expr3_esize = NULL_TREE; | |
8f992d64 | 5801 | label_errmsg = label_finish = errmsg = errlen = NULL_TREE; |
1792349b | 5802 | e3_is = E3_UNSET; |
525a5e33 | 5803 | is_coarray = needs_caf_sync = false; |
3759634f | 5804 | |
90cf3ecc PT |
5805 | gfc_init_block (&block); |
5806 | gfc_init_block (&post); | |
1312bb90 | 5807 | gfc_init_block (&final_block); |
6de9cd9a | 5808 | |
8f992d64 DC |
5809 | /* STAT= (and maybe ERRMSG=) is present. */ |
5810 | if (code->expr1) | |
6de9cd9a | 5811 | { |
8f992d64 | 5812 | /* STAT=. */ |
e2cad04b | 5813 | tree gfc_int4_type_node = gfc_get_int_type (4); |
6de9cd9a | 5814 | stat = gfc_create_var (gfc_int4_type_node, "stat"); |
6de9cd9a | 5815 | |
8f992d64 DC |
5816 | /* ERRMSG= only makes sense with STAT=. */ |
5817 | if (code->expr2) | |
5818 | { | |
5819 | gfc_init_se (&se, NULL); | |
5d81ddd0 | 5820 | se.want_pointer = 1; |
8f992d64 | 5821 | gfc_conv_expr_lhs (&se, code->expr2); |
5d81ddd0 TB |
5822 | errmsg = se.expr; |
5823 | errlen = se.string_length; | |
8f992d64 DC |
5824 | } |
5825 | else | |
5826 | { | |
5827 | errmsg = null_pointer_node; | |
5828 | errlen = build_int_cst (gfc_charlen_type_node, 0); | |
5829 | } | |
5830 | ||
5831 | /* GOTO destinations. */ | |
5832 | label_errmsg = gfc_build_label_decl (NULL_TREE); | |
5833 | label_finish = gfc_build_label_decl (NULL_TREE); | |
5d81ddd0 | 5834 | TREE_USED (label_finish) = 0; |
6de9cd9a | 5835 | } |
6de9cd9a | 5836 | |
db7ffcab AV |
5837 | /* When an expr3 is present evaluate it only once. The standards prevent a |
5838 | dependency of expr3 on the objects in the allocate list. An expr3 can | |
5839 | be pre-evaluated in all cases. One just has to make sure, to use the | |
5840 | correct way, i.e., to get the descriptor or to get a reference | |
5841 | expression. */ | |
34d9d749 AV |
5842 | if (code->expr3) |
5843 | { | |
139d4065 AV |
5844 | bool vtab_needed = false, temp_var_needed = false, |
5845 | temp_obj_created = false; | |
ffaf9305 AV |
5846 | |
5847 | is_coarray = gfc_is_coarray (code->expr3); | |
34d9d749 | 5848 | |
1312bb90 PT |
5849 | if (code->expr3->expr_type == EXPR_FUNCTION && !code->expr3->mold |
5850 | && (gfc_is_class_array_function (code->expr3) | |
5851 | || gfc_is_alloc_class_scalar_function (code->expr3))) | |
5852 | code->expr3->must_finalize = 1; | |
5853 | ||
34d9d749 AV |
5854 | /* Figure whether we need the vtab from expr3. */ |
5855 | for (al = code->ext.alloc.list; !vtab_needed && al != NULL; | |
5856 | al = al->next) | |
5857 | vtab_needed = (al->expr->ts.type == BT_CLASS); | |
5858 | ||
1792349b | 5859 | gfc_init_se (&se, NULL); |
db7ffcab | 5860 | /* When expr3 is a variable, i.e., a very simple expression, |
34d9d749 | 5861 | then convert it once here. */ |
db7ffcab AV |
5862 | if (code->expr3->expr_type == EXPR_VARIABLE |
5863 | || code->expr3->expr_type == EXPR_ARRAY | |
5864 | || code->expr3->expr_type == EXPR_CONSTANT) | |
5865 | { | |
5866 | if (!code->expr3->mold | |
5867 | || code->expr3->ts.type == BT_CHARACTER | |
1792349b AV |
5868 | || vtab_needed |
5869 | || code->ext.alloc.arr_spec_from_expr3) | |
34d9d749 | 5870 | { |
1792349b AV |
5871 | /* Convert expr3 to a tree. For all "simple" expression just |
5872 | get the descriptor or the reference, respectively, depending | |
5873 | on the rank of the expr. */ | |
5874 | if (code->ext.alloc.arr_spec_from_expr3 || code->expr3->rank != 0) | |
440f9408 AV |
5875 | gfc_conv_expr_descriptor (&se, code->expr3); |
5876 | else | |
1c645536 AV |
5877 | { |
5878 | gfc_conv_expr_reference (&se, code->expr3); | |
5879 | ||
5880 | /* gfc_conv_expr_reference wraps POINTER_PLUS_EXPR in a | |
5881 | NOP_EXPR, which prevents gfortran from getting the vptr | |
5882 | from the source=-expression. Remove the NOP_EXPR and go | |
5883 | with the POINTER_PLUS_EXPR in this case. */ | |
5884 | if (code->expr3->ts.type == BT_CLASS | |
5885 | && TREE_CODE (se.expr) == NOP_EXPR | |
781d83d9 AV |
5886 | && (TREE_CODE (TREE_OPERAND (se.expr, 0)) |
5887 | == POINTER_PLUS_EXPR | |
5888 | || is_coarray)) | |
1c645536 AV |
5889 | se.expr = TREE_OPERAND (se.expr, 0); |
5890 | } | |
1792349b AV |
5891 | /* Create a temp variable only for component refs to prevent |
5892 | having to go through the full deref-chain each time and to | |
5893 | simplfy computation of array properties. */ | |
5894 | temp_var_needed = TREE_CODE (se.expr) == COMPONENT_REF; | |
db7ffcab | 5895 | } |
db7ffcab AV |
5896 | } |
5897 | else | |
5898 | { | |
1792349b | 5899 | /* In all other cases evaluate the expr3. */ |
db7ffcab AV |
5900 | symbol_attribute attr; |
5901 | /* Get the descriptor for all arrays, that are not allocatable or | |
b8ac4f3b AV |
5902 | pointer, because the latter are descriptors already. |
5903 | The exception are function calls returning a class object: | |
5904 | The descriptor is stored in their results _data component, which | |
5905 | is easier to access, when first a temporary variable for the | |
5906 | result is created and the descriptor retrieved from there. */ | |
db7ffcab | 5907 | attr = gfc_expr_attr (code->expr3); |
b8ac4f3b AV |
5908 | if (code->expr3->rank != 0 |
5909 | && ((!attr.allocatable && !attr.pointer) | |
5910 | || (code->expr3->expr_type == EXPR_FUNCTION | |
574284e9 AV |
5911 | && (code->expr3->ts.type != BT_CLASS |
5912 | || (code->expr3->value.function.isym | |
5913 | && code->expr3->value.function.isym | |
5914 | ->transformational))))) | |
db7ffcab AV |
5915 | gfc_conv_expr_descriptor (&se, code->expr3); |
5916 | else | |
5917 | gfc_conv_expr_reference (&se, code->expr3); | |
5918 | if (code->expr3->ts.type == BT_CLASS) | |
5919 | gfc_conv_class_to_class (&se, code->expr3, | |
5920 | code->expr3->ts, | |
5921 | false, true, | |
5922 | false, false); | |
139d4065 | 5923 | temp_obj_created = temp_var_needed = !VAR_P (se.expr); |
1792349b AV |
5924 | } |
5925 | gfc_add_block_to_block (&block, &se.pre); | |
1312bb90 PT |
5926 | if (code->expr3->must_finalize) |
5927 | gfc_add_block_to_block (&final_block, &se.post); | |
5928 | else | |
5929 | gfc_add_block_to_block (&post, &se.post); | |
64e56ab0 AV |
5930 | |
5931 | /* Special case when string in expr3 is zero. */ | |
5932 | if (code->expr3->ts.type == BT_CHARACTER | |
5933 | && integer_zerop (se.string_length)) | |
5934 | { | |
5935 | gfc_init_se (&se, NULL); | |
5936 | temp_var_needed = false; | |
f622221a | 5937 | expr3_len = build_zero_cst (gfc_charlen_type_node); |
64e56ab0 AV |
5938 | e3_is = E3_MOLD; |
5939 | } | |
1792349b AV |
5940 | /* Prevent aliasing, i.e., se.expr may be already a |
5941 | variable declaration. */ | |
64e56ab0 | 5942 | else if (se.expr != NULL_TREE && temp_var_needed) |
1792349b | 5943 | { |
b8ac4f3b | 5944 | tree var, desc; |
781d83d9 | 5945 | tmp = GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (se.expr)) || is_coarray ? |
1792349b AV |
5946 | se.expr |
5947 | : build_fold_indirect_ref_loc (input_location, se.expr); | |
b8ac4f3b AV |
5948 | |
5949 | /* Get the array descriptor and prepare it to be assigned to the | |
5950 | temporary variable var. For classes the array descriptor is | |
5951 | in the _data component and the object goes into the | |
5952 | GFC_DECL_SAVED_DESCRIPTOR. */ | |
5953 | if (code->expr3->ts.type == BT_CLASS | |
5954 | && code->expr3->rank != 0) | |
5955 | { | |
5956 | /* When an array_ref was in expr3, then the descriptor is the | |
5957 | first operand. */ | |
781d83d9 | 5958 | if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (tmp)) || is_coarray) |
b8ac4f3b AV |
5959 | { |
5960 | desc = TREE_OPERAND (tmp, 0); | |
5961 | } | |
5962 | else | |
5963 | { | |
5964 | desc = tmp; | |
5965 | tmp = gfc_class_data_get (tmp); | |
5966 | } | |
92c5266b AV |
5967 | if (code->ext.alloc.arr_spec_from_expr3) |
5968 | e3_is = E3_DESC; | |
b8ac4f3b AV |
5969 | } |
5970 | else | |
781d83d9 AV |
5971 | desc = !is_coarray ? se.expr |
5972 | : TREE_OPERAND (TREE_OPERAND (se.expr, 0), 0); | |
1792349b AV |
5973 | /* We need a regular (non-UID) symbol here, therefore give a |
5974 | prefix. */ | |
5975 | var = gfc_create_var (TREE_TYPE (tmp), "source"); | |
781d83d9 | 5976 | if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (tmp)) || is_coarray) |
db7ffcab | 5977 | { |
1792349b | 5978 | gfc_allocate_lang_decl (var); |
b8ac4f3b | 5979 | GFC_DECL_SAVED_DESCRIPTOR (var) = desc; |
1792349b AV |
5980 | } |
5981 | gfc_add_modify_loc (input_location, &block, var, tmp); | |
26e46e4b | 5982 | |
1792349b | 5983 | expr3 = var; |
db7ffcab | 5984 | if (se.string_length) |
1792349b | 5985 | /* Evaluate it assuming that it also is complicated like expr3. */ |
db7ffcab | 5986 | expr3_len = gfc_evaluate_now (se.string_length, &block); |
34d9d749 | 5987 | } |
1792349b AV |
5988 | else |
5989 | { | |
5990 | expr3 = se.expr; | |
5991 | expr3_len = se.string_length; | |
5992 | } | |
3cae214f PT |
5993 | |
5994 | /* Deallocate any allocatable components in expressions that use a | |
139d4065 AV |
5995 | temporary object, i.e. are not a simple alias of to an EXPR_VARIABLE. |
5996 | E.g. temporaries of a function call need freeing of their components | |
5997 | here. */ | |
3cae214f PT |
5998 | if ((code->expr3->ts.type == BT_DERIVED |
5999 | || code->expr3->ts.type == BT_CLASS) | |
139d4065 | 6000 | && (code->expr3->expr_type != EXPR_VARIABLE || temp_obj_created) |
3cae214f PT |
6001 | && code->expr3->ts.u.derived->attr.alloc_comp) |
6002 | { | |
6003 | tmp = gfc_deallocate_alloc_comp (code->expr3->ts.u.derived, | |
6004 | expr3, code->expr3->rank); | |
6005 | gfc_prepend_expr_to_block (&post, tmp); | |
6006 | } | |
6007 | ||
1792349b | 6008 | /* Store what the expr3 is to be used for. */ |
b8ac4f3b AV |
6009 | if (e3_is == E3_UNSET) |
6010 | e3_is = expr3 != NULL_TREE ? | |
6011 | (code->ext.alloc.arr_spec_from_expr3 ? | |
6012 | E3_DESC | |
6013 | : (code->expr3->mold ? E3_MOLD : E3_SOURCE)) | |
6014 | : E3_UNSET; | |
34d9d749 AV |
6015 | |
6016 | /* Figure how to get the _vtab entry. This also obtains the tree | |
6017 | expression for accessing the _len component, because only | |
6018 | unlimited polymorphic objects, which are a subcategory of class | |
6019 | types, have a _len component. */ | |
6020 | if (code->expr3->ts.type == BT_CLASS) | |
6021 | { | |
6022 | gfc_expr *rhs; | |
b8ac4f3b AV |
6023 | tmp = expr3 != NULL_TREE && POINTER_TYPE_P (TREE_TYPE (expr3)) ? |
6024 | build_fold_indirect_ref (expr3): expr3; | |
db7ffcab AV |
6025 | /* Polymorphic SOURCE: VPTR must be determined at run time. |
6026 | expr3 may be a temporary array declaration, therefore check for | |
6027 | GFC_CLASS_TYPE_P before trying to get the _vptr component. */ | |
b8ac4f3b | 6028 | if (tmp != NULL_TREE |
b8ac4f3b AV |
6029 | && (e3_is == E3_DESC |
6030 | || (GFC_CLASS_TYPE_P (TREE_TYPE (tmp)) | |
6031 | && (VAR_P (tmp) || !code->expr3->ref)) | |
6032 | || (VAR_P (tmp) && DECL_LANG_SPECIFIC (tmp)))) | |
34d9d749 | 6033 | tmp = gfc_class_vptr_get (expr3); |
34d9d749 AV |
6034 | else |
6035 | { | |
6036 | rhs = gfc_find_and_cut_at_last_class_ref (code->expr3); | |
6037 | gfc_add_vptr_component (rhs); | |
6038 | gfc_init_se (&se, NULL); | |
6039 | se.want_pointer = 1; | |
6040 | gfc_conv_expr (&se, rhs); | |
6041 | tmp = se.expr; | |
6042 | gfc_free_expr (rhs); | |
6043 | } | |
6044 | /* Set the element size. */ | |
6045 | expr3_esize = gfc_vptr_size_get (tmp); | |
6046 | if (vtab_needed) | |
6047 | expr3_vptr = tmp; | |
6048 | /* Initialize the ref to the _len component. */ | |
6049 | if (expr3_len == NULL_TREE && UNLIMITED_POLY (code->expr3)) | |
6050 | { | |
6051 | /* Same like for retrieving the _vptr. */ | |
6052 | if (expr3 != NULL_TREE && !code->expr3->ref) | |
1792349b | 6053 | expr3_len = gfc_class_len_get (expr3); |
34d9d749 AV |
6054 | else |
6055 | { | |
6056 | rhs = gfc_find_and_cut_at_last_class_ref (code->expr3); | |
6057 | gfc_add_len_component (rhs); | |
6058 | gfc_init_se (&se, NULL); | |
6059 | gfc_conv_expr (&se, rhs); | |
6060 | expr3_len = se.expr; | |
6061 | gfc_free_expr (rhs); | |
6062 | } | |
6063 | } | |
6064 | } | |
6065 | else | |
6066 | { | |
6067 | /* When the object to allocate is polymorphic type, then it | |
6068 | needs its vtab set correctly, so deduce the required _vtab | |
6069 | and _len from the source expression. */ | |
6070 | if (vtab_needed) | |
6071 | { | |
6072 | /* VPTR is fixed at compile time. */ | |
6073 | gfc_symbol *vtab; | |
90cf3ecc | 6074 | |
34d9d749 AV |
6075 | vtab = gfc_find_vtab (&code->expr3->ts); |
6076 | gcc_assert (vtab); | |
6077 | expr3_vptr = gfc_get_symbol_decl (vtab); | |
6078 | expr3_vptr = gfc_build_addr_expr (NULL_TREE, | |
6079 | expr3_vptr); | |
6080 | } | |
6081 | /* _len component needs to be set, when ts is a character | |
6082 | array. */ | |
6083 | if (expr3_len == NULL_TREE | |
6084 | && code->expr3->ts.type == BT_CHARACTER) | |
6085 | { | |
6086 | if (code->expr3->ts.u.cl | |
6087 | && code->expr3->ts.u.cl->length) | |
6088 | { | |
6089 | gfc_init_se (&se, NULL); | |
6090 | gfc_conv_expr (&se, code->expr3->ts.u.cl->length); | |
6091 | gfc_add_block_to_block (&block, &se.pre); | |
6092 | expr3_len = gfc_evaluate_now (se.expr, &block); | |
6093 | } | |
6094 | gcc_assert (expr3_len); | |
6095 | } | |
6096 | /* For character arrays only the kind's size is needed, because | |
6097 | the array mem_size is _len * (elem_size = kind_size). | |
6098 | For all other get the element size in the normal way. */ | |
6099 | if (code->expr3->ts.type == BT_CHARACTER) | |
6100 | expr3_esize = TYPE_SIZE_UNIT ( | |
6101 | gfc_get_char_type (code->expr3->ts.kind)); | |
6102 | else | |
6103 | expr3_esize = TYPE_SIZE_UNIT ( | |
6104 | gfc_typenode_for_spec (&code->expr3->ts)); | |
6105 | } | |
6106 | gcc_assert (expr3_esize); | |
6107 | expr3_esize = fold_convert (sizetype, expr3_esize); | |
1792349b | 6108 | if (e3_is == E3_MOLD) |
64e56ab0 AV |
6109 | /* The expr3 is no longer valid after this point. */ |
6110 | expr3 = NULL_TREE; | |
34d9d749 AV |
6111 | } |
6112 | else if (code->ext.alloc.ts.type != BT_UNKNOWN) | |
6113 | { | |
6114 | /* Compute the explicit typespec given only once for all objects | |
6115 | to allocate. */ | |
6116 | if (code->ext.alloc.ts.type != BT_CHARACTER) | |
6117 | expr3_esize = TYPE_SIZE_UNIT ( | |
6118 | gfc_typenode_for_spec (&code->ext.alloc.ts)); | |
8cd119d8 | 6119 | else if (code->ext.alloc.ts.u.cl->length != NULL) |
34d9d749 AV |
6120 | { |
6121 | gfc_expr *sz; | |
34d9d749 AV |
6122 | sz = gfc_copy_expr (code->ext.alloc.ts.u.cl->length); |
6123 | gfc_init_se (&se_sz, NULL); | |
6124 | gfc_conv_expr (&se_sz, sz); | |
6125 | gfc_free_expr (sz); | |
6126 | tmp = gfc_get_char_type (code->ext.alloc.ts.kind); | |
6127 | tmp = TYPE_SIZE_UNIT (tmp); | |
6128 | tmp = fold_convert (TREE_TYPE (se_sz.expr), tmp); | |
69aaea06 | 6129 | gfc_add_block_to_block (&block, &se_sz.pre); |
34d9d749 AV |
6130 | expr3_esize = fold_build2_loc (input_location, MULT_EXPR, |
6131 | TREE_TYPE (se_sz.expr), | |
6132 | tmp, se_sz.expr); | |
69aaea06 | 6133 | expr3_esize = gfc_evaluate_now (expr3_esize, &block); |
34d9d749 | 6134 | } |
8cd119d8 PT |
6135 | else |
6136 | expr3_esize = NULL_TREE; | |
34d9d749 AV |
6137 | } |
6138 | ||
574284e9 AV |
6139 | /* The routine gfc_trans_assignment () already implements all |
6140 | techniques needed. Unfortunately we may have a temporary | |
6141 | variable for the source= expression here. When that is the | |
6142 | case convert this variable into a temporary gfc_expr of type | |
6143 | EXPR_VARIABLE and used it as rhs for the assignment. The | |
6144 | advantage is, that we get scalarizer support for free, | |
6145 | don't have to take care about scalar to array treatment and | |
6146 | will benefit of every enhancements gfc_trans_assignment () | |
6147 | gets. | |
6148 | No need to check whether e3_is is E3_UNSET, because that is | |
6149 | done by expr3 != NULL_TREE. | |
6150 | Exclude variables since the following block does not handle | |
6151 | array sections. In any case, there is no harm in sending | |
6152 | variables to gfc_trans_assignment because there is no | |
6153 | evaluation of variables. */ | |
6154 | if (code->expr3) | |
6155 | { | |
6156 | if (code->expr3->expr_type != EXPR_VARIABLE | |
6157 | && e3_is != E3_MOLD && expr3 != NULL_TREE | |
6158 | && DECL_P (expr3) && DECL_ARTIFICIAL (expr3)) | |
6159 | { | |
6160 | /* Build a temporary symtree and symbol. Do not add it to the current | |
6161 | namespace to prevent accidently modifying a colliding | |
6162 | symbol's as. */ | |
6163 | newsym = XCNEW (gfc_symtree); | |
6164 | /* The name of the symtree should be unique, because gfc_create_var () | |
6165 | took care about generating the identifier. */ | |
51f03c6b JJ |
6166 | newsym->name |
6167 | = gfc_get_string ("%s", IDENTIFIER_POINTER (DECL_NAME (expr3))); | |
574284e9 AV |
6168 | newsym->n.sym = gfc_new_symbol (newsym->name, NULL); |
6169 | /* The backend_decl is known. It is expr3, which is inserted | |
6170 | here. */ | |
6171 | newsym->n.sym->backend_decl = expr3; | |
6172 | e3rhs = gfc_get_expr (); | |
6173 | e3rhs->rank = code->expr3->rank; | |
6174 | e3rhs->symtree = newsym; | |
6175 | /* Mark the symbol referenced or gfc_trans_assignment will bug. */ | |
6176 | newsym->n.sym->attr.referenced = 1; | |
6177 | e3rhs->expr_type = EXPR_VARIABLE; | |
6178 | e3rhs->where = code->expr3->where; | |
6179 | /* Set the symbols type, upto it was BT_UNKNOWN. */ | |
6180 | if (IS_CLASS_ARRAY (code->expr3) | |
6181 | && code->expr3->expr_type == EXPR_FUNCTION | |
6182 | && code->expr3->value.function.isym | |
6183 | && code->expr3->value.function.isym->transformational) | |
6184 | { | |
6185 | e3rhs->ts = CLASS_DATA (code->expr3)->ts; | |
6186 | } | |
6187 | else if (code->expr3->ts.type == BT_CLASS | |
6188 | && !GFC_CLASS_TYPE_P (TREE_TYPE (expr3))) | |
6189 | e3rhs->ts = CLASS_DATA (code->expr3)->ts; | |
6190 | else | |
6191 | e3rhs->ts = code->expr3->ts; | |
6192 | newsym->n.sym->ts = e3rhs->ts; | |
6193 | /* Check whether the expr3 is array valued. */ | |
6194 | if (e3rhs->rank) | |
6195 | { | |
6196 | gfc_array_spec *arr; | |
6197 | arr = gfc_get_array_spec (); | |
6198 | arr->rank = e3rhs->rank; | |
6199 | arr->type = AS_DEFERRED; | |
6200 | /* Set the dimension and pointer attribute for arrays | |
6201 | to be on the safe side. */ | |
6202 | newsym->n.sym->attr.dimension = 1; | |
6203 | newsym->n.sym->attr.pointer = 1; | |
6204 | newsym->n.sym->as = arr; | |
6205 | if (IS_CLASS_ARRAY (code->expr3) | |
6206 | && code->expr3->expr_type == EXPR_FUNCTION | |
6207 | && code->expr3->value.function.isym | |
6208 | && code->expr3->value.function.isym->transformational) | |
6209 | { | |
6210 | gfc_array_spec *tarr; | |
6211 | tarr = gfc_get_array_spec (); | |
6212 | *tarr = *arr; | |
6213 | e3rhs->ts.u.derived->as = tarr; | |
6214 | } | |
6215 | gfc_add_full_array_ref (e3rhs, arr); | |
6216 | } | |
6217 | else if (POINTER_TYPE_P (TREE_TYPE (expr3))) | |
6218 | newsym->n.sym->attr.pointer = 1; | |
6219 | /* The string length is known, too. Set it for char arrays. */ | |
6220 | if (e3rhs->ts.type == BT_CHARACTER) | |
6221 | newsym->n.sym->ts.u.cl->backend_decl = expr3_len; | |
6222 | gfc_commit_symbol (newsym->n.sym); | |
6223 | } | |
6224 | else | |
6225 | e3rhs = gfc_copy_expr (code->expr3); | |
6226 | } | |
6227 | ||
34d9d749 | 6228 | /* Loop over all objects to allocate. */ |
cf2b3c22 | 6229 | for (al = code->ext.alloc.list; al != NULL; al = al->next) |
6de9cd9a | 6230 | { |
f43085aa | 6231 | expr = gfc_copy_expr (al->expr); |
34d9d749 AV |
6232 | /* UNLIMITED_POLY () needs the _data component to be set, when |
6233 | expr is a unlimited polymorphic object. But the _data component | |
6234 | has not been set yet, so check the derived type's attr for the | |
6235 | unlimited polymorphic flag to be safe. */ | |
6236 | upoly_expr = UNLIMITED_POLY (expr) | |
6237 | || (expr->ts.type == BT_DERIVED | |
6238 | && expr->ts.u.derived->attr.unlimited_polymorphic); | |
6239 | gfc_init_se (&se, NULL); | |
f43085aa | 6240 | |
34d9d749 AV |
6241 | /* For class types prepare the expressions to ref the _vptr |
6242 | and the _len component. The latter for unlimited polymorphic | |
6243 | types only. */ | |
f43085aa | 6244 | if (expr->ts.type == BT_CLASS) |
34d9d749 AV |
6245 | { |
6246 | gfc_expr *expr_ref_vptr, *expr_ref_len; | |
6247 | gfc_add_data_component (expr); | |
6248 | /* Prep the vptr handle. */ | |
6249 | expr_ref_vptr = gfc_copy_expr (al->expr); | |
6250 | gfc_add_vptr_component (expr_ref_vptr); | |
6251 | se.want_pointer = 1; | |
6252 | gfc_conv_expr (&se, expr_ref_vptr); | |
6253 | al_vptr = se.expr; | |
6254 | se.want_pointer = 0; | |
6255 | gfc_free_expr (expr_ref_vptr); | |
6256 | /* Allocated unlimited polymorphic objects always have a _len | |
6257 | component. */ | |
6258 | if (upoly_expr) | |
6259 | { | |
6260 | expr_ref_len = gfc_copy_expr (al->expr); | |
6261 | gfc_add_len_component (expr_ref_len); | |
6262 | gfc_conv_expr (&se, expr_ref_len); | |
6263 | al_len = se.expr; | |
6264 | gfc_free_expr (expr_ref_len); | |
6265 | } | |
6266 | else | |
6267 | /* In a loop ensure that all loop variable dependent variables | |
6268 | are initialized at the same spot in all execution paths. */ | |
6269 | al_len = NULL_TREE; | |
6270 | } | |
6271 | else | |
6272 | al_vptr = al_len = NULL_TREE; | |
6de9cd9a DN |
6273 | |
6274 | se.want_pointer = 1; | |
6275 | se.descriptor_only = 1; | |
78ab5260 | 6276 | |
6de9cd9a | 6277 | gfc_conv_expr (&se, expr); |
34d9d749 AV |
6278 | if (expr->ts.type == BT_CHARACTER && expr->ts.deferred) |
6279 | /* se.string_length now stores the .string_length variable of expr | |
6280 | needed to allocate character(len=:) arrays. */ | |
6281 | al_len = se.string_length; | |
6282 | ||
6283 | al_len_needs_set = al_len != NULL_TREE; | |
6284 | /* When allocating an array one can not use much of the | |
6285 | pre-evaluated expr3 expressions, because for most of them the | |
6286 | scalarizer is needed which is not available in the pre-evaluation | |
6287 | step. Therefore gfc_array_allocate () is responsible (and able) | |
6288 | to handle the complete array allocation. Only the element size | |
6289 | needs to be provided, which is done most of the time by the | |
6290 | pre-evaluation step. */ | |
4daa71b0 | 6291 | nelems = NULL_TREE; |
764d5c7b AV |
6292 | if (expr3_len && (code->expr3->ts.type == BT_CHARACTER |
6293 | || code->expr3->ts.type == BT_CLASS)) | |
6294 | { | |
6295 | /* When al is an array, then the element size for each element | |
6296 | in the array is needed, which is the product of the len and | |
6297 | esize for char arrays. For unlimited polymorphics len can be | |
6298 | zero, therefore take the maximum of len and one. */ | |
6299 | tmp = fold_build2_loc (input_location, MAX_EXPR, | |
6300 | TREE_TYPE (expr3_len), | |
6301 | expr3_len, fold_convert (TREE_TYPE (expr3_len), | |
6302 | integer_one_node)); | |
6303 | tmp = fold_build2_loc (input_location, MULT_EXPR, | |
6304 | TREE_TYPE (expr3_esize), expr3_esize, | |
6305 | fold_convert (TREE_TYPE (expr3_esize), tmp)); | |
6306 | } | |
34d9d749 AV |
6307 | else |
6308 | tmp = expr3_esize; | |
6309 | if (!gfc_array_allocate (&se, expr, stat, errmsg, errlen, | |
1792349b AV |
6310 | label_finish, tmp, &nelems, |
6311 | e3rhs ? e3rhs : code->expr3, | |
6312 | e3_is == E3_DESC ? expr3 : NULL_TREE, | |
6313 | code->expr3 != NULL && e3_is == E3_DESC | |
6314 | && code->expr3->expr_type == EXPR_ARRAY)) | |
6de9cd9a | 6315 | { |
34d9d749 AV |
6316 | /* A scalar or derived type. First compute the size to |
6317 | allocate. | |
cf2b3c22 | 6318 | |
34d9d749 AV |
6319 | expr3_len is set when expr3 is an unlimited polymorphic |
6320 | object or a deferred length string. */ | |
6321 | if (expr3_len != NULL_TREE) | |
8d51f26f | 6322 | { |
34d9d749 AV |
6323 | tmp = fold_convert (TREE_TYPE (expr3_esize), expr3_len); |
6324 | tmp = fold_build2_loc (input_location, MULT_EXPR, | |
6325 | TREE_TYPE (expr3_esize), | |
6326 | expr3_esize, tmp); | |
6327 | if (code->expr3->ts.type != BT_CLASS) | |
6328 | /* expr3 is a deferred length string, i.e., we are | |
6329 | done. */ | |
6330 | memsz = tmp; | |
8d51f26f | 6331 | else |
5b384b3d | 6332 | { |
34d9d749 AV |
6333 | /* For unlimited polymorphic enties build |
6334 | (len > 0) ? element_size * len : element_size | |
6335 | to compute the number of bytes to allocate. | |
6336 | This allows the allocation of unlimited polymorphic | |
6337 | objects from an expr3 that is also unlimited | |
6338 | polymorphic and stores a _len dependent object, | |
6339 | e.g., a string. */ | |
6340 | memsz = fold_build2_loc (input_location, GT_EXPR, | |
63ee5404 | 6341 | logical_type_node, expr3_len, |
f622221a JB |
6342 | build_zero_cst |
6343 | (TREE_TYPE (expr3_len))); | |
34d9d749 AV |
6344 | memsz = fold_build3_loc (input_location, COND_EXPR, |
6345 | TREE_TYPE (expr3_esize), | |
6346 | memsz, tmp, expr3_esize); | |
5b384b3d | 6347 | } |
8d51f26f | 6348 | } |
34d9d749 AV |
6349 | else if (expr3_esize != NULL_TREE) |
6350 | /* Any other object in expr3 just needs element size in | |
6351 | bytes. */ | |
6352 | memsz = expr3_esize; | |
6353 | else if ((expr->ts.type == BT_CHARACTER && expr->ts.deferred) | |
6354 | || (upoly_expr | |
6355 | && code->ext.alloc.ts.type == BT_CHARACTER)) | |
2573aab9 | 6356 | { |
34d9d749 AV |
6357 | /* Allocating deferred length char arrays need the length |
6358 | to allocate in the alloc_type_spec. But also unlimited | |
6359 | polymorphic objects may be allocated as char arrays. | |
6360 | Both are handled here. */ | |
2573aab9 TB |
6361 | gfc_init_se (&se_sz, NULL); |
6362 | gfc_conv_expr (&se_sz, code->ext.alloc.ts.u.cl->length); | |
6363 | gfc_add_block_to_block (&se.pre, &se_sz.pre); | |
6364 | se_sz.expr = gfc_evaluate_now (se_sz.expr, &se.pre); | |
6365 | gfc_add_block_to_block (&se.pre, &se_sz.post); | |
34d9d749 AV |
6366 | expr3_len = se_sz.expr; |
6367 | tmp_expr3_len_flag = true; | |
6368 | tmp = TYPE_SIZE_UNIT ( | |
6369 | gfc_get_char_type (code->ext.alloc.ts.kind)); | |
2573aab9 | 6370 | memsz = fold_build2_loc (input_location, MULT_EXPR, |
34d9d749 AV |
6371 | TREE_TYPE (tmp), |
6372 | fold_convert (TREE_TYPE (tmp), | |
6373 | expr3_len), | |
6374 | tmp); | |
2573aab9 | 6375 | } |
34d9d749 | 6376 | else if (expr->ts.type == BT_CHARACTER) |
8d51f26f | 6377 | { |
34d9d749 AV |
6378 | /* Compute the number of bytes needed to allocate a fixed |
6379 | length char array. */ | |
6380 | gcc_assert (se.string_length != NULL_TREE); | |
6381 | tmp = TYPE_SIZE_UNIT (gfc_get_char_type (expr->ts.kind)); | |
8d51f26f PT |
6382 | memsz = fold_build2_loc (input_location, MULT_EXPR, |
6383 | TREE_TYPE (tmp), tmp, | |
34d9d749 AV |
6384 | fold_convert (TREE_TYPE (tmp), |
6385 | se.string_length)); | |
8d51f26f | 6386 | } |
34d9d749 AV |
6387 | else if (code->ext.alloc.ts.type != BT_UNKNOWN) |
6388 | /* Handle all types, where the alloc_type_spec is set. */ | |
6389 | memsz = TYPE_SIZE_UNIT (gfc_typenode_for_spec (&code->ext.alloc.ts)); | |
6390 | else | |
6391 | /* Handle size computation of the type declared to alloc. */ | |
6f3d1a5e | 6392 | memsz = TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (se.expr))); |
90cf3ecc | 6393 | |
525a5e33 AV |
6394 | /* Store the caf-attributes for latter use. */ |
6395 | if (flag_coarray == GFC_FCOARRAY_LIB | |
6396 | && (caf_attr = gfc_caf_attr (expr, true, &caf_refs_comp)) | |
6397 | .codimension) | |
3c9f5092 AV |
6398 | { |
6399 | /* Scalar allocatable components in coarray'ed derived types make | |
6400 | it here and are treated now. */ | |
6401 | tree caf_decl, token; | |
6402 | gfc_se caf_se; | |
6403 | ||
ffaf9305 | 6404 | is_coarray = true; |
525a5e33 AV |
6405 | /* Set flag, to add synchronize after the allocate. */ |
6406 | needs_caf_sync = needs_caf_sync | |
6407 | || caf_attr.coarray_comp || !caf_refs_comp; | |
ffaf9305 | 6408 | |
3c9f5092 AV |
6409 | gfc_init_se (&caf_se, NULL); |
6410 | ||
6411 | caf_decl = gfc_get_tree_for_caf_expr (expr); | |
6412 | gfc_get_caf_token_offset (&caf_se, &token, NULL, caf_decl, | |
6413 | NULL_TREE, NULL); | |
6414 | gfc_add_block_to_block (&se.pre, &caf_se.pre); | |
6415 | gfc_allocate_allocatable (&se.pre, se.expr, memsz, | |
6416 | gfc_build_addr_expr (NULL_TREE, token), | |
6417 | NULL_TREE, NULL_TREE, NULL_TREE, | |
6418 | label_finish, expr, 1); | |
6419 | } | |
5b130807 | 6420 | /* Allocate - for non-pointers with re-alloc checking. */ |
3c9f5092 AV |
6421 | else if (gfc_expr_attr (expr).allocatable) |
6422 | gfc_allocate_allocatable (&se.pre, se.expr, memsz, | |
6423 | NULL_TREE, stat, errmsg, errlen, | |
6424 | label_finish, expr, 0); | |
90cf3ecc | 6425 | else |
4f13e17f | 6426 | gfc_allocate_using_malloc (&se.pre, se.expr, memsz, stat); |
6de9cd9a | 6427 | } |
34d9d749 AV |
6428 | else |
6429 | { | |
ffaf9305 AV |
6430 | /* Allocating coarrays needs a sync after the allocate executed. |
6431 | Set the flag to add the sync after all objects are allocated. */ | |
525a5e33 AV |
6432 | if (flag_coarray == GFC_FCOARRAY_LIB |
6433 | && (caf_attr = gfc_caf_attr (expr, true, &caf_refs_comp)) | |
6434 | .codimension) | |
6435 | { | |
6436 | is_coarray = true; | |
6437 | needs_caf_sync = needs_caf_sync | |
6438 | || caf_attr.coarray_comp || !caf_refs_comp; | |
6439 | } | |
ffaf9305 | 6440 | |
34d9d749 AV |
6441 | if (expr->ts.type == BT_CHARACTER && al_len != NULL_TREE |
6442 | && expr3_len != NULL_TREE) | |
6443 | { | |
6444 | /* Arrays need to have a _len set before the array | |
6445 | descriptor is filled. */ | |
6446 | gfc_add_modify (&block, al_len, | |
6447 | fold_convert (TREE_TYPE (al_len), expr3_len)); | |
6448 | /* Prevent setting the length twice. */ | |
6449 | al_len_needs_set = false; | |
6450 | } | |
afbc5ae8 | 6451 | else if (expr->ts.type == BT_CHARACTER && al_len != NULL_TREE |
323c5722 | 6452 | && code->ext.alloc.ts.u.cl->length) |
afbc5ae8 PT |
6453 | { |
6454 | /* Cover the cases where a string length is explicitly | |
6455 | specified by a type spec for deferred length character | |
6456 | arrays or unlimited polymorphic objects without a | |
6457 | source= or mold= expression. */ | |
6458 | gfc_init_se (&se_sz, NULL); | |
6459 | gfc_conv_expr (&se_sz, code->ext.alloc.ts.u.cl->length); | |
69aaea06 | 6460 | gfc_add_block_to_block (&block, &se_sz.pre); |
afbc5ae8 PT |
6461 | gfc_add_modify (&block, al_len, |
6462 | fold_convert (TREE_TYPE (al_len), | |
6463 | se_sz.expr)); | |
6464 | al_len_needs_set = false; | |
6465 | } | |
34d9d749 | 6466 | } |
6de9cd9a | 6467 | |
90cf3ecc | 6468 | gfc_add_block_to_block (&block, &se.pre); |
cf2b3c22 | 6469 | |
8f992d64 DC |
6470 | /* Error checking -- Note: ERRMSG only makes sense with STAT. */ |
6471 | if (code->expr1) | |
6472 | { | |
5d81ddd0 | 6473 | tmp = build1_v (GOTO_EXPR, label_errmsg); |
8f992d64 | 6474 | parm = fold_build2_loc (input_location, NE_EXPR, |
63ee5404 | 6475 | logical_type_node, stat, |
8f992d64 DC |
6476 | build_int_cst (TREE_TYPE (stat), 0)); |
6477 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, | |
ed9c79e1 JJ |
6478 | gfc_unlikely (parm, PRED_FORTRAN_FAIL_ALLOC), |
6479 | tmp, build_empty_stmt (input_location)); | |
8f992d64 DC |
6480 | gfc_add_expr_to_block (&block, tmp); |
6481 | } | |
8b704316 | 6482 | |
574284e9 AV |
6483 | /* Set the vptr only when no source= is set. When source= is set, then |
6484 | the trans_assignment below will set the vptr. */ | |
6485 | if (al_vptr != NULL_TREE && (!code->expr3 || code->expr3->mold)) | |
c49ea23d | 6486 | { |
34d9d749 AV |
6487 | if (expr3_vptr != NULL_TREE) |
6488 | /* The vtab is already known, so just assign it. */ | |
6489 | gfc_add_modify (&block, al_vptr, | |
6490 | fold_convert (TREE_TYPE (al_vptr), expr3_vptr)); | |
c49ea23d PT |
6491 | else |
6492 | { | |
6493 | /* VPTR is fixed at compile time. */ | |
6494 | gfc_symbol *vtab; | |
6495 | gfc_typespec *ts; | |
34d9d749 | 6496 | |
c49ea23d | 6497 | if (code->expr3) |
34d9d749 AV |
6498 | /* Although expr3 is pre-evaluated above, it may happen, |
6499 | that for arrays or in mold= cases the pre-evaluation | |
6500 | was not successful. In these rare cases take the vtab | |
6501 | from the typespec of expr3 here. */ | |
c49ea23d | 6502 | ts = &code->expr3->ts; |
34d9d749 AV |
6503 | else if (code->ext.alloc.ts.type == BT_DERIVED || upoly_expr) |
6504 | /* The alloc_type_spec gives the type to allocate or the | |
6505 | al is unlimited polymorphic, which enforces the use of | |
6506 | an alloc_type_spec that is not necessarily a BT_DERIVED. */ | |
c49ea23d | 6507 | ts = &code->ext.alloc.ts; |
c49ea23d | 6508 | else |
34d9d749 AV |
6509 | /* Prepare for setting the vtab as declared. */ |
6510 | ts = &expr->ts; | |
6511 | ||
6512 | vtab = gfc_find_vtab (ts); | |
6513 | gcc_assert (vtab); | |
6514 | tmp = gfc_build_addr_expr (NULL_TREE, | |
6515 | gfc_get_symbol_decl (vtab)); | |
6516 | gfc_add_modify (&block, al_vptr, | |
6517 | fold_convert (TREE_TYPE (al_vptr), tmp)); | |
c49ea23d | 6518 | } |
c49ea23d PT |
6519 | } |
6520 | ||
34d9d749 AV |
6521 | /* Add assignment for string length. */ |
6522 | if (al_len != NULL_TREE && al_len_needs_set) | |
6523 | { | |
6524 | if (expr3_len != NULL_TREE) | |
6525 | { | |
6526 | gfc_add_modify (&block, al_len, | |
6527 | fold_convert (TREE_TYPE (al_len), | |
6528 | expr3_len)); | |
6529 | /* When tmp_expr3_len_flag is set, then expr3_len is | |
6530 | abused to carry the length information from the | |
6531 | alloc_type. Clear it to prevent setting incorrect len | |
6532 | information in future loop iterations. */ | |
6533 | if (tmp_expr3_len_flag) | |
6534 | /* No need to reset tmp_expr3_len_flag, because the | |
6535 | presence of an expr3 can not change within in the | |
6536 | loop. */ | |
6537 | expr3_len = NULL_TREE; | |
6538 | } | |
6539 | else if (code->ext.alloc.ts.type == BT_CHARACTER | |
323c5722 | 6540 | && code->ext.alloc.ts.u.cl->length) |
34d9d749 AV |
6541 | { |
6542 | /* Cover the cases where a string length is explicitly | |
6543 | specified by a type spec for deferred length character | |
6544 | arrays or unlimited polymorphic objects without a | |
6545 | source= or mold= expression. */ | |
69aaea06 AV |
6546 | if (expr3_esize == NULL_TREE || code->ext.alloc.ts.kind != 1) |
6547 | { | |
6548 | gfc_init_se (&se_sz, NULL); | |
6549 | gfc_conv_expr (&se_sz, code->ext.alloc.ts.u.cl->length); | |
6550 | gfc_add_block_to_block (&block, &se_sz.pre); | |
6551 | gfc_add_modify (&block, al_len, | |
6552 | fold_convert (TREE_TYPE (al_len), | |
6553 | se_sz.expr)); | |
6554 | } | |
6555 | else | |
6556 | gfc_add_modify (&block, al_len, | |
6557 | fold_convert (TREE_TYPE (al_len), | |
6558 | expr3_esize)); | |
34d9d749 AV |
6559 | } |
6560 | else | |
6561 | /* No length information needed, because type to allocate | |
6562 | has no length. Set _len to 0. */ | |
6563 | gfc_add_modify (&block, al_len, | |
6564 | fold_convert (TREE_TYPE (al_len), | |
6565 | integer_zero_node)); | |
6566 | } | |
cc03bf7a AV |
6567 | |
6568 | init_expr = NULL; | |
64e56ab0 | 6569 | if (code->expr3 && !code->expr3->mold && e3_is != E3_MOLD) |
cf2b3c22 | 6570 | { |
db7ffcab | 6571 | /* Initialization via SOURCE block (or static default initializer). |
574284e9 AV |
6572 | Switch off automatic reallocation since we have just done the |
6573 | ALLOCATE. */ | |
6574 | int realloc_lhs = flag_realloc_lhs; | |
6575 | gfc_expr *init_expr = gfc_expr_to_initialize (expr); | |
6576 | gfc_expr *rhs = e3rhs ? e3rhs : gfc_copy_expr (code->expr3); | |
6577 | flag_realloc_lhs = 0; | |
6578 | tmp = gfc_trans_assignment (init_expr, rhs, false, false, true, | |
6579 | false); | |
6580 | flag_realloc_lhs = realloc_lhs; | |
6581 | /* Free the expression allocated for init_expr. */ | |
6582 | gfc_free_expr (init_expr); | |
6583 | if (rhs != e3rhs) | |
6584 | gfc_free_expr (rhs); | |
f43085aa JW |
6585 | gfc_add_expr_to_block (&block, tmp); |
6586 | } | |
5bab4c96 PT |
6587 | /* Set KIND and LEN PDT components and allocate those that are |
6588 | parameterized. */ | |
6589 | else if (expr->ts.type == BT_DERIVED | |
6590 | && expr->ts.u.derived->attr.pdt_type) | |
6591 | { | |
6592 | if (code->expr3 && code->expr3->param_list) | |
6593 | param_list = code->expr3->param_list; | |
6594 | else if (expr->param_list) | |
6595 | param_list = expr->param_list; | |
6596 | else | |
6597 | param_list = expr->symtree->n.sym->param_list; | |
6598 | tmp = gfc_allocate_pdt_comp (expr->ts.u.derived, se.expr, | |
6599 | expr->rank, param_list); | |
6600 | gfc_add_expr_to_block (&block, tmp); | |
6601 | } | |
6602 | /* Ditto for CLASS expressions. */ | |
6603 | else if (expr->ts.type == BT_CLASS | |
6604 | && CLASS_DATA (expr)->ts.u.derived->attr.pdt_type) | |
6605 | { | |
6606 | if (code->expr3 && code->expr3->param_list) | |
6607 | param_list = code->expr3->param_list; | |
6608 | else if (expr->param_list) | |
6609 | param_list = expr->param_list; | |
6610 | else | |
6611 | param_list = expr->symtree->n.sym->param_list; | |
6612 | tmp = gfc_allocate_pdt_comp (CLASS_DATA (expr)->ts.u.derived, | |
6613 | se.expr, expr->rank, param_list); | |
6614 | gfc_add_expr_to_block (&block, tmp); | |
6615 | } | |
574284e9 AV |
6616 | else if (code->expr3 && code->expr3->mold |
6617 | && code->expr3->ts.type == BT_CLASS) | |
50f30801 | 6618 | { |
574284e9 AV |
6619 | /* Use class_init_assign to initialize expr. */ |
6620 | gfc_code *ini; | |
6621 | ini = gfc_get_code (EXEC_INIT_ASSIGN); | |
6622 | ini->expr1 = gfc_find_and_cut_at_last_class_ref (expr); | |
6623 | tmp = gfc_trans_class_init_assign (ini); | |
6624 | gfc_free_statements (ini); | |
b6ff8128 | 6625 | gfc_add_expr_to_block (&block, tmp); |
50f30801 | 6626 | } |
cc03bf7a AV |
6627 | else if ((init_expr = allocate_get_initializer (code, expr))) |
6628 | { | |
6629 | /* Use class_init_assign to initialize expr. */ | |
6630 | gfc_code *ini; | |
6631 | int realloc_lhs = flag_realloc_lhs; | |
6632 | ini = gfc_get_code (EXEC_INIT_ASSIGN); | |
6633 | ini->expr1 = gfc_expr_to_initialize (expr); | |
6634 | ini->expr2 = init_expr; | |
6635 | flag_realloc_lhs = 0; | |
6636 | tmp= gfc_trans_init_assign (ini); | |
6637 | flag_realloc_lhs = realloc_lhs; | |
6638 | gfc_free_statements (ini); | |
6639 | /* Init_expr is freeed by above free_statements, just need to null | |
6640 | it here. */ | |
6641 | init_expr = NULL; | |
6642 | gfc_add_expr_to_block (&block, tmp); | |
6643 | } | |
f43085aa | 6644 | |
de91486c AV |
6645 | /* Nullify all pointers in derived type coarrays. This registers a |
6646 | token for them which allows their allocation. */ | |
6647 | if (is_coarray) | |
6648 | { | |
6649 | gfc_symbol *type = NULL; | |
6650 | symbol_attribute caf_attr; | |
6651 | int rank = 0; | |
6652 | if (code->ext.alloc.ts.type == BT_DERIVED | |
6653 | && code->ext.alloc.ts.u.derived->attr.pointer_comp) | |
6654 | { | |
6655 | type = code->ext.alloc.ts.u.derived; | |
6656 | rank = type->attr.dimension ? type->as->rank : 0; | |
6657 | gfc_clear_attr (&caf_attr); | |
6658 | } | |
6659 | else if (expr->ts.type == BT_DERIVED | |
6660 | && expr->ts.u.derived->attr.pointer_comp) | |
6661 | { | |
6662 | type = expr->ts.u.derived; | |
6663 | rank = expr->rank; | |
6664 | caf_attr = gfc_caf_attr (expr, true); | |
6665 | } | |
6666 | ||
6667 | /* Initialize the tokens of pointer components in derived type | |
6668 | coarrays. */ | |
6669 | if (type) | |
6670 | { | |
6671 | tmp = (caf_attr.codimension && !caf_attr.dimension) | |
6672 | ? gfc_conv_descriptor_data_get (se.expr) : se.expr; | |
6673 | tmp = gfc_nullify_alloc_comp (type, tmp, rank, | |
6674 | GFC_STRUCTURE_CAF_MODE_IN_COARRAY); | |
6675 | gfc_add_expr_to_block (&block, tmp); | |
6676 | } | |
6677 | } | |
6678 | ||
574284e9 | 6679 | gfc_free_expr (expr); |
34d9d749 | 6680 | } // for-loop |
6de9cd9a | 6681 | |
db7ffcab AV |
6682 | if (e3rhs) |
6683 | { | |
6684 | if (newsym) | |
6685 | { | |
6686 | gfc_free_symbol (newsym->n.sym); | |
6687 | XDELETE (newsym); | |
6688 | } | |
6689 | gfc_free_expr (e3rhs); | |
6690 | } | |
5d81ddd0 | 6691 | /* STAT. */ |
a513927a | 6692 | if (code->expr1) |
6de9cd9a | 6693 | { |
8f992d64 | 6694 | tmp = build1_v (LABEL_EXPR, label_errmsg); |
6de9cd9a | 6695 | gfc_add_expr_to_block (&block, tmp); |
6de9cd9a DN |
6696 | } |
6697 | ||
5d81ddd0 TB |
6698 | /* ERRMSG - only useful if STAT is present. */ |
6699 | if (code->expr1 && code->expr2) | |
3759634f | 6700 | { |
3759634f | 6701 | const char *msg = "Attempt to allocate an allocated object"; |
5d81ddd0 TB |
6702 | tree slen, dlen, errmsg_str; |
6703 | stmtblock_t errmsg_block; | |
3759634f | 6704 | |
5d81ddd0 | 6705 | gfc_init_block (&errmsg_block); |
3759634f | 6706 | |
5d81ddd0 TB |
6707 | errmsg_str = gfc_create_var (pchar_type_node, "ERRMSG"); |
6708 | gfc_add_modify (&errmsg_block, errmsg_str, | |
3759634f SK |
6709 | gfc_build_addr_expr (pchar_type_node, |
6710 | gfc_build_localized_cstring_const (msg))); | |
6711 | ||
f622221a | 6712 | slen = build_int_cst (gfc_charlen_type_node, strlen (msg)); |
3759634f | 6713 | dlen = gfc_get_expr_charlen (code->expr2); |
34d9d749 AV |
6714 | slen = fold_build2_loc (input_location, MIN_EXPR, |
6715 | TREE_TYPE (slen), dlen, slen); | |
3759634f | 6716 | |
34d9d749 AV |
6717 | gfc_trans_string_copy (&errmsg_block, dlen, errmsg, |
6718 | code->expr2->ts.kind, | |
6719 | slen, errmsg_str, | |
6720 | gfc_default_character_kind); | |
5d81ddd0 | 6721 | dlen = gfc_finish_block (&errmsg_block); |
3759634f | 6722 | |
63ee5404 | 6723 | tmp = fold_build2_loc (input_location, NE_EXPR, logical_type_node, |
34d9d749 | 6724 | stat, build_int_cst (TREE_TYPE (stat), 0)); |
3759634f | 6725 | |
34d9d749 AV |
6726 | tmp = build3_v (COND_EXPR, tmp, |
6727 | dlen, build_empty_stmt (input_location)); | |
3759634f SK |
6728 | |
6729 | gfc_add_expr_to_block (&block, tmp); | |
6730 | } | |
6731 | ||
8f992d64 DC |
6732 | /* STAT block. */ |
6733 | if (code->expr1) | |
6734 | { | |
5d81ddd0 TB |
6735 | if (TREE_USED (label_finish)) |
6736 | { | |
6737 | tmp = build1_v (LABEL_EXPR, label_finish); | |
6738 | gfc_add_expr_to_block (&block, tmp); | |
6739 | } | |
6740 | ||
8f992d64 DC |
6741 | gfc_init_se (&se, NULL); |
6742 | gfc_conv_expr_lhs (&se, code->expr1); | |
6743 | tmp = convert (TREE_TYPE (se.expr), stat); | |
6744 | gfc_add_modify (&block, se.expr, tmp); | |
6745 | } | |
6746 | ||
525a5e33 | 6747 | if (needs_caf_sync) |
ffaf9305 AV |
6748 | { |
6749 | /* Add a sync all after the allocation has been executed. */ | |
6750 | tmp = build_call_expr_loc (input_location, gfor_fndecl_caf_sync_all, | |
6751 | 3, null_pointer_node, null_pointer_node, | |
6752 | integer_zero_node); | |
6753 | gfc_add_expr_to_block (&post, tmp); | |
6754 | } | |
6755 | ||
90cf3ecc PT |
6756 | gfc_add_block_to_block (&block, &se.post); |
6757 | gfc_add_block_to_block (&block, &post); | |
1312bb90 PT |
6758 | if (code->expr3 && code->expr3->must_finalize) |
6759 | gfc_add_block_to_block (&block, &final_block); | |
90cf3ecc | 6760 | |
6de9cd9a DN |
6761 | return gfc_finish_block (&block); |
6762 | } | |
6763 | ||
6764 | ||
3759634f SK |
6765 | /* Translate a DEALLOCATE statement. */ |
6766 | ||
6de9cd9a | 6767 | tree |
3759634f | 6768 | gfc_trans_deallocate (gfc_code *code) |
6de9cd9a DN |
6769 | { |
6770 | gfc_se se; | |
6771 | gfc_alloc *al; | |
5d81ddd0 TB |
6772 | tree apstat, pstat, stat, errmsg, errlen, tmp; |
6773 | tree label_finish, label_errmsg; | |
6de9cd9a DN |
6774 | stmtblock_t block; |
6775 | ||
5d81ddd0 TB |
6776 | pstat = apstat = stat = errmsg = errlen = tmp = NULL_TREE; |
6777 | label_finish = label_errmsg = NULL_TREE; | |
3759634f | 6778 | |
6de9cd9a DN |
6779 | gfc_start_block (&block); |
6780 | ||
3759634f SK |
6781 | /* Count the number of failed deallocations. If deallocate() was |
6782 | called with STAT= , then set STAT to the count. If deallocate | |
6783 | was called with ERRMSG, then set ERRMG to a string. */ | |
5d81ddd0 | 6784 | if (code->expr1) |
364667a1 SK |
6785 | { |
6786 | tree gfc_int4_type_node = gfc_get_int_type (4); | |
6787 | ||
364667a1 | 6788 | stat = gfc_create_var (gfc_int4_type_node, "stat"); |
628c189e | 6789 | pstat = gfc_build_addr_expr (NULL_TREE, stat); |
364667a1 | 6790 | |
5d81ddd0 TB |
6791 | /* GOTO destinations. */ |
6792 | label_errmsg = gfc_build_label_decl (NULL_TREE); | |
6793 | label_finish = gfc_build_label_decl (NULL_TREE); | |
6794 | TREE_USED (label_finish) = 0; | |
6795 | } | |
364667a1 | 6796 | |
5d81ddd0 TB |
6797 | /* Set ERRMSG - only needed if STAT is available. */ |
6798 | if (code->expr1 && code->expr2) | |
6799 | { | |
6800 | gfc_init_se (&se, NULL); | |
6801 | se.want_pointer = 1; | |
6802 | gfc_conv_expr_lhs (&se, code->expr2); | |
6803 | errmsg = se.expr; | |
6804 | errlen = se.string_length; | |
364667a1 | 6805 | } |
364667a1 | 6806 | |
cf2b3c22 | 6807 | for (al = code->ext.alloc.list; al != NULL; al = al->next) |
6de9cd9a | 6808 | { |
0d87fa8c | 6809 | gfc_expr *expr = gfc_copy_expr (al->expr); |
ba85c8c3 AV |
6810 | bool is_coarray = false, is_coarray_array = false; |
6811 | int caf_mode = 0; | |
6812 | ||
6e45f57b | 6813 | gcc_assert (expr->expr_type == EXPR_VARIABLE); |
6de9cd9a | 6814 | |
0d87fa8c JW |
6815 | if (expr->ts.type == BT_CLASS) |
6816 | gfc_add_data_component (expr); | |
6817 | ||
6de9cd9a DN |
6818 | gfc_init_se (&se, NULL); |
6819 | gfc_start_block (&se.pre); | |
6820 | ||
6821 | se.want_pointer = 1; | |
6822 | se.descriptor_only = 1; | |
6823 | gfc_conv_expr (&se, expr); | |
6824 | ||
5bab4c96 PT |
6825 | /* Deallocate PDT components that are parameterized. */ |
6826 | tmp = NULL; | |
6827 | if (expr->ts.type == BT_DERIVED | |
6828 | && expr->ts.u.derived->attr.pdt_type | |
6829 | && expr->symtree->n.sym->param_list) | |
6830 | tmp = gfc_deallocate_pdt_comp (expr->ts.u.derived, se.expr, expr->rank); | |
6831 | else if (expr->ts.type == BT_CLASS | |
6832 | && CLASS_DATA (expr)->ts.u.derived->attr.pdt_type | |
6833 | && expr->symtree->n.sym->param_list) | |
6834 | tmp = gfc_deallocate_pdt_comp (CLASS_DATA (expr)->ts.u.derived, | |
6835 | se.expr, expr->rank); | |
6836 | ||
6837 | if (tmp) | |
6838 | gfc_add_expr_to_block (&block, tmp); | |
6839 | ||
de91486c AV |
6840 | if (flag_coarray == GFC_FCOARRAY_LIB |
6841 | || flag_coarray == GFC_FCOARRAY_SINGLE) | |
ba85c8c3 AV |
6842 | { |
6843 | bool comp_ref; | |
6844 | symbol_attribute caf_attr = gfc_caf_attr (expr, false, &comp_ref); | |
6845 | if (caf_attr.codimension) | |
6846 | { | |
6847 | is_coarray = true; | |
6848 | is_coarray_array = caf_attr.dimension || !comp_ref | |
6849 | || caf_attr.coarray_comp; | |
6850 | ||
de91486c AV |
6851 | if (flag_coarray == GFC_FCOARRAY_LIB) |
6852 | /* When the expression to deallocate is referencing a | |
6853 | component, then only deallocate it, but do not | |
6854 | deregister. */ | |
6855 | caf_mode = GFC_STRUCTURE_CAF_MODE_IN_COARRAY | |
6856 | | (comp_ref && !caf_attr.coarray_comp | |
6857 | ? GFC_STRUCTURE_CAF_MODE_DEALLOC_ONLY : 0); | |
ba85c8c3 AV |
6858 | } |
6859 | } | |
ba85c8c3 AV |
6860 | |
6861 | if (expr->rank || is_coarray_array) | |
2c807128 | 6862 | { |
ec6a7096 PT |
6863 | gfc_ref *ref; |
6864 | ||
ba85c8c3 AV |
6865 | if (gfc_bt_struct (expr->ts.type) |
6866 | && expr->ts.u.derived->attr.alloc_comp | |
ef292537 | 6867 | && !gfc_is_finalizable (expr->ts.u.derived, NULL)) |
5046aff5 | 6868 | { |
2c807128 | 6869 | gfc_ref *last = NULL; |
ec6a7096 | 6870 | |
2c807128 JW |
6871 | for (ref = expr->ref; ref; ref = ref->next) |
6872 | if (ref->type == REF_COMPONENT) | |
6873 | last = ref; | |
6874 | ||
6875 | /* Do not deallocate the components of a derived type | |
34d9d749 | 6876 | ultimate pointer component. */ |
2c807128 JW |
6877 | if (!(last && last->u.c.component->attr.pointer) |
6878 | && !(!last && expr->symtree->n.sym->attr.pointer)) | |
6879 | { | |
ba85c8c3 | 6880 | if (is_coarray && expr->rank == 0 |
eb401400 AV |
6881 | && (!last || !last->u.c.component->attr.dimension) |
6882 | && GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (se.expr))) | |
ba85c8c3 AV |
6883 | { |
6884 | /* Add the ref to the data member only, when this is not | |
6885 | a regular array or deallocate_alloc_comp will try to | |
6886 | add another one. */ | |
6887 | tmp = gfc_conv_descriptor_data_get (se.expr); | |
6888 | } | |
6889 | else | |
6890 | tmp = se.expr; | |
6891 | tmp = gfc_deallocate_alloc_comp (expr->ts.u.derived, tmp, | |
6892 | expr->rank, caf_mode); | |
2c807128 JW |
6893 | gfc_add_expr_to_block (&se.pre, tmp); |
6894 | } | |
5046aff5 | 6895 | } |
ec6a7096 PT |
6896 | |
6897 | if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (se.expr))) | |
6898 | { | |
ba85c8c3 AV |
6899 | gfc_coarray_deregtype caf_dtype; |
6900 | ||
6901 | if (is_coarray) | |
6902 | caf_dtype = gfc_caf_is_dealloc_only (caf_mode) | |
6903 | ? GFC_CAF_COARRAY_DEALLOCATE_ONLY | |
6904 | : GFC_CAF_COARRAY_DEREGISTER; | |
6905 | else | |
6906 | caf_dtype = GFC_CAF_COARRAY_NOCOARRAY; | |
39da5866 AV |
6907 | tmp = gfc_deallocate_with_status (se.expr, pstat, errmsg, errlen, |
6908 | label_finish, false, expr, | |
6909 | caf_dtype); | |
ec6a7096 PT |
6910 | gfc_add_expr_to_block (&se.pre, tmp); |
6911 | } | |
6912 | else if (TREE_CODE (se.expr) == COMPONENT_REF | |
6913 | && TREE_CODE (TREE_TYPE (se.expr)) == ARRAY_TYPE | |
6914 | && TREE_CODE (TREE_TYPE (TREE_TYPE (se.expr))) | |
6915 | == RECORD_TYPE) | |
6916 | { | |
6917 | /* class.c(finalize_component) generates these, when a | |
6918 | finalizable entity has a non-allocatable derived type array | |
6919 | component, which has allocatable components. Obtain the | |
6920 | derived type of the array and deallocate the allocatable | |
6921 | components. */ | |
6922 | for (ref = expr->ref; ref; ref = ref->next) | |
6923 | { | |
6924 | if (ref->u.c.component->attr.dimension | |
6925 | && ref->u.c.component->ts.type == BT_DERIVED) | |
6926 | break; | |
6927 | } | |
6928 | ||
6929 | if (ref && ref->u.c.component->ts.u.derived->attr.alloc_comp | |
6930 | && !gfc_is_finalizable (ref->u.c.component->ts.u.derived, | |
6931 | NULL)) | |
6932 | { | |
6933 | tmp = gfc_deallocate_alloc_comp | |
6934 | (ref->u.c.component->ts.u.derived, | |
6935 | se.expr, expr->rank); | |
6936 | gfc_add_expr_to_block (&se.pre, tmp); | |
6937 | } | |
6938 | } | |
6939 | ||
4fb5478c | 6940 | if (al->expr->ts.type == BT_CLASS) |
34d9d749 AV |
6941 | { |
6942 | gfc_reset_vptr (&se.pre, al->expr); | |
6943 | if (UNLIMITED_POLY (al->expr) | |
6944 | || (al->expr->ts.type == BT_DERIVED | |
6945 | && al->expr->ts.u.derived->attr.unlimited_polymorphic)) | |
6946 | /* Clear _len, too. */ | |
6947 | gfc_reset_len (&se.pre, al->expr); | |
6948 | } | |
5046aff5 | 6949 | } |
6de9cd9a DN |
6950 | else |
6951 | { | |
ba85c8c3 AV |
6952 | tmp = gfc_deallocate_scalar_with_status (se.expr, pstat, label_finish, |
6953 | false, al->expr, | |
6954 | al->expr->ts, is_coarray); | |
54200abb RG |
6955 | gfc_add_expr_to_block (&se.pre, tmp); |
6956 | ||
0d87fa8c | 6957 | /* Set to zero after deallocation. */ |
bc98ed60 TB |
6958 | tmp = fold_build2_loc (input_location, MODIFY_EXPR, void_type_node, |
6959 | se.expr, | |
6960 | build_int_cst (TREE_TYPE (se.expr), 0)); | |
0d87fa8c | 6961 | gfc_add_expr_to_block (&se.pre, tmp); |
8b704316 | 6962 | |
0d87fa8c | 6963 | if (al->expr->ts.type == BT_CLASS) |
34d9d749 AV |
6964 | { |
6965 | gfc_reset_vptr (&se.pre, al->expr); | |
6966 | if (UNLIMITED_POLY (al->expr) | |
6967 | || (al->expr->ts.type == BT_DERIVED | |
6968 | && al->expr->ts.u.derived->attr.unlimited_polymorphic)) | |
6969 | /* Clear _len, too. */ | |
6970 | gfc_reset_len (&se.pre, al->expr); | |
6971 | } | |
6de9cd9a | 6972 | } |
364667a1 | 6973 | |
5d81ddd0 | 6974 | if (code->expr1) |
364667a1 | 6975 | { |
5d81ddd0 TB |
6976 | tree cond; |
6977 | ||
63ee5404 | 6978 | cond = fold_build2_loc (input_location, NE_EXPR, logical_type_node, stat, |
5d81ddd0 TB |
6979 | build_int_cst (TREE_TYPE (stat), 0)); |
6980 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, | |
ed9c79e1 | 6981 | gfc_unlikely (cond, PRED_FORTRAN_FAIL_ALLOC), |
5d81ddd0 TB |
6982 | build1_v (GOTO_EXPR, label_errmsg), |
6983 | build_empty_stmt (input_location)); | |
6984 | gfc_add_expr_to_block (&se.pre, tmp); | |
364667a1 SK |
6985 | } |
6986 | ||
6de9cd9a DN |
6987 | tmp = gfc_finish_block (&se.pre); |
6988 | gfc_add_expr_to_block (&block, tmp); | |
0d87fa8c | 6989 | gfc_free_expr (expr); |
364667a1 SK |
6990 | } |
6991 | ||
a513927a | 6992 | if (code->expr1) |
364667a1 | 6993 | { |
5d81ddd0 TB |
6994 | tmp = build1_v (LABEL_EXPR, label_errmsg); |
6995 | gfc_add_expr_to_block (&block, tmp); | |
6de9cd9a DN |
6996 | } |
6997 | ||
5d81ddd0 TB |
6998 | /* Set ERRMSG - only needed if STAT is available. */ |
6999 | if (code->expr1 && code->expr2) | |
3759634f | 7000 | { |
3759634f | 7001 | const char *msg = "Attempt to deallocate an unallocated object"; |
5d81ddd0 TB |
7002 | stmtblock_t errmsg_block; |
7003 | tree errmsg_str, slen, dlen, cond; | |
3759634f | 7004 | |
5d81ddd0 | 7005 | gfc_init_block (&errmsg_block); |
3759634f | 7006 | |
5d81ddd0 TB |
7007 | errmsg_str = gfc_create_var (pchar_type_node, "ERRMSG"); |
7008 | gfc_add_modify (&errmsg_block, errmsg_str, | |
3759634f SK |
7009 | gfc_build_addr_expr (pchar_type_node, |
7010 | gfc_build_localized_cstring_const (msg))); | |
f622221a | 7011 | slen = build_int_cst (gfc_charlen_type_node, strlen (msg)); |
3759634f | 7012 | dlen = gfc_get_expr_charlen (code->expr2); |
3759634f | 7013 | |
5d81ddd0 TB |
7014 | gfc_trans_string_copy (&errmsg_block, dlen, errmsg, code->expr2->ts.kind, |
7015 | slen, errmsg_str, gfc_default_character_kind); | |
7016 | tmp = gfc_finish_block (&errmsg_block); | |
3759634f | 7017 | |
63ee5404 | 7018 | cond = fold_build2_loc (input_location, NE_EXPR, logical_type_node, stat, |
5d81ddd0 TB |
7019 | build_int_cst (TREE_TYPE (stat), 0)); |
7020 | tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node, | |
ed9c79e1 | 7021 | gfc_unlikely (cond, PRED_FORTRAN_FAIL_ALLOC), tmp, |
5d81ddd0 | 7022 | build_empty_stmt (input_location)); |
3759634f | 7023 | |
5d81ddd0 TB |
7024 | gfc_add_expr_to_block (&block, tmp); |
7025 | } | |
3759634f | 7026 | |
5d81ddd0 TB |
7027 | if (code->expr1 && TREE_USED (label_finish)) |
7028 | { | |
7029 | tmp = build1_v (LABEL_EXPR, label_finish); | |
3759634f SK |
7030 | gfc_add_expr_to_block (&block, tmp); |
7031 | } | |
7032 | ||
5d81ddd0 TB |
7033 | /* Set STAT. */ |
7034 | if (code->expr1) | |
7035 | { | |
7036 | gfc_init_se (&se, NULL); | |
7037 | gfc_conv_expr_lhs (&se, code->expr1); | |
7038 | tmp = convert (TREE_TYPE (se.expr), stat); | |
7039 | gfc_add_modify (&block, se.expr, tmp); | |
7040 | } | |
7041 | ||
6de9cd9a DN |
7042 | return gfc_finish_block (&block); |
7043 | } | |
7044 | ||
d2886bc7 | 7045 | #include "gt-fortran-trans-stmt.h" |