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re PR fortran/79886 (ICE in pp_format, at pretty-print.c:681)
[gcc.git] / gcc / fortran / trans-io.c
1 /* IO Code translation/library interface
2 Copyright (C) 2002-2017 Free Software Foundation, Inc.
3 Contributed by Paul Brook
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 3, or (at your option) any later
10 version.
11
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
20
21
22 #include "config.h"
23 #include "system.h"
24 #include "coretypes.h"
25 #include "tree.h"
26 #include "gfortran.h"
27 #include "trans.h"
28 #include "stringpool.h"
29 #include "fold-const.h"
30 #include "stor-layout.h"
31 #include "trans-stmt.h"
32 #include "trans-array.h"
33 #include "trans-types.h"
34 #include "trans-const.h"
35 #include "options.h"
36
37 /* Members of the ioparm structure. */
38
39 enum ioparam_type
40 {
41 IOPARM_ptype_common,
42 IOPARM_ptype_open,
43 IOPARM_ptype_close,
44 IOPARM_ptype_filepos,
45 IOPARM_ptype_inquire,
46 IOPARM_ptype_dt,
47 IOPARM_ptype_wait,
48 IOPARM_ptype_num
49 };
50
51 enum iofield_type
52 {
53 IOPARM_type_int4,
54 IOPARM_type_intio,
55 IOPARM_type_pint4,
56 IOPARM_type_pintio,
57 IOPARM_type_pchar,
58 IOPARM_type_parray,
59 IOPARM_type_pad,
60 IOPARM_type_char1,
61 IOPARM_type_char2,
62 IOPARM_type_common,
63 IOPARM_type_num
64 };
65
66 typedef struct GTY(()) gfc_st_parameter_field {
67 const char *name;
68 unsigned int mask;
69 enum ioparam_type param_type;
70 enum iofield_type type;
71 tree field;
72 tree field_len;
73 }
74 gfc_st_parameter_field;
75
76 typedef struct GTY(()) gfc_st_parameter {
77 const char *name;
78 tree type;
79 }
80 gfc_st_parameter;
81
82 enum iofield
83 {
84 #define IOPARM(param_type, name, mask, type) IOPARM_##param_type##_##name,
85 #include "ioparm.def"
86 #undef IOPARM
87 IOPARM_field_num
88 };
89
90 static GTY(()) gfc_st_parameter st_parameter[] =
91 {
92 { "common", NULL },
93 { "open", NULL },
94 { "close", NULL },
95 { "filepos", NULL },
96 { "inquire", NULL },
97 { "dt", NULL },
98 { "wait", NULL }
99 };
100
101 static GTY(()) gfc_st_parameter_field st_parameter_field[] =
102 {
103 #define IOPARM(param_type, name, mask, type) \
104 { #name, mask, IOPARM_ptype_##param_type, IOPARM_type_##type, NULL, NULL },
105 #include "ioparm.def"
106 #undef IOPARM
107 { NULL, 0, (enum ioparam_type) 0, (enum iofield_type) 0, NULL, NULL }
108 };
109
110 /* Library I/O subroutines */
111
112 enum iocall
113 {
114 IOCALL_READ,
115 IOCALL_READ_DONE,
116 IOCALL_WRITE,
117 IOCALL_WRITE_DONE,
118 IOCALL_X_INTEGER,
119 IOCALL_X_INTEGER_WRITE,
120 IOCALL_X_LOGICAL,
121 IOCALL_X_LOGICAL_WRITE,
122 IOCALL_X_CHARACTER,
123 IOCALL_X_CHARACTER_WRITE,
124 IOCALL_X_CHARACTER_WIDE,
125 IOCALL_X_CHARACTER_WIDE_WRITE,
126 IOCALL_X_REAL,
127 IOCALL_X_REAL_WRITE,
128 IOCALL_X_COMPLEX,
129 IOCALL_X_COMPLEX_WRITE,
130 IOCALL_X_REAL128,
131 IOCALL_X_REAL128_WRITE,
132 IOCALL_X_COMPLEX128,
133 IOCALL_X_COMPLEX128_WRITE,
134 IOCALL_X_ARRAY,
135 IOCALL_X_ARRAY_WRITE,
136 IOCALL_X_DERIVED,
137 IOCALL_OPEN,
138 IOCALL_CLOSE,
139 IOCALL_INQUIRE,
140 IOCALL_IOLENGTH,
141 IOCALL_IOLENGTH_DONE,
142 IOCALL_REWIND,
143 IOCALL_BACKSPACE,
144 IOCALL_ENDFILE,
145 IOCALL_FLUSH,
146 IOCALL_SET_NML_VAL,
147 IOCALL_SET_NML_DTIO_VAL,
148 IOCALL_SET_NML_VAL_DIM,
149 IOCALL_WAIT,
150 IOCALL_NUM
151 };
152
153 static GTY(()) tree iocall[IOCALL_NUM];
154
155 /* Variable for keeping track of what the last data transfer statement
156 was. Used for deciding which subroutine to call when the data
157 transfer is complete. */
158 static enum { READ, WRITE, IOLENGTH } last_dt;
159
160 /* The data transfer parameter block that should be shared by all
161 data transfer calls belonging to the same read/write/iolength. */
162 static GTY(()) tree dt_parm;
163 static stmtblock_t *dt_post_end_block;
164
165 static void
166 gfc_build_st_parameter (enum ioparam_type ptype, tree *types)
167 {
168 unsigned int type;
169 gfc_st_parameter_field *p;
170 char name[64];
171 size_t len;
172 tree t = make_node (RECORD_TYPE);
173 tree *chain = NULL;
174
175 len = strlen (st_parameter[ptype].name);
176 gcc_assert (len <= sizeof (name) - sizeof ("__st_parameter_"));
177 memcpy (name, "__st_parameter_", sizeof ("__st_parameter_"));
178 memcpy (name + sizeof ("__st_parameter_") - 1, st_parameter[ptype].name,
179 len + 1);
180 TYPE_NAME (t) = get_identifier (name);
181
182 for (type = 0, p = st_parameter_field; type < IOPARM_field_num; type++, p++)
183 if (p->param_type == ptype)
184 switch (p->type)
185 {
186 case IOPARM_type_int4:
187 case IOPARM_type_intio:
188 case IOPARM_type_pint4:
189 case IOPARM_type_pintio:
190 case IOPARM_type_parray:
191 case IOPARM_type_pchar:
192 case IOPARM_type_pad:
193 p->field = gfc_add_field_to_struct (t, get_identifier (p->name),
194 types[p->type], &chain);
195 break;
196 case IOPARM_type_char1:
197 p->field = gfc_add_field_to_struct (t, get_identifier (p->name),
198 pchar_type_node, &chain);
199 /* FALLTHROUGH */
200 case IOPARM_type_char2:
201 len = strlen (p->name);
202 gcc_assert (len <= sizeof (name) - sizeof ("_len"));
203 memcpy (name, p->name, len);
204 memcpy (name + len, "_len", sizeof ("_len"));
205 p->field_len = gfc_add_field_to_struct (t, get_identifier (name),
206 gfc_charlen_type_node,
207 &chain);
208 if (p->type == IOPARM_type_char2)
209 p->field = gfc_add_field_to_struct (t, get_identifier (p->name),
210 pchar_type_node, &chain);
211 break;
212 case IOPARM_type_common:
213 p->field
214 = gfc_add_field_to_struct (t,
215 get_identifier (p->name),
216 st_parameter[IOPARM_ptype_common].type,
217 &chain);
218 break;
219 case IOPARM_type_num:
220 gcc_unreachable ();
221 }
222
223 /* -Wpadded warnings on these artificially created structures are not
224 helpful; suppress them. */
225 int save_warn_padded = warn_padded;
226 warn_padded = 0;
227 gfc_finish_type (t);
228 warn_padded = save_warn_padded;
229 st_parameter[ptype].type = t;
230 }
231
232
233 /* Build code to test an error condition and call generate_error if needed.
234 Note: This builds calls to generate_error in the runtime library function.
235 The function generate_error is dependent on certain parameters in the
236 st_parameter_common flags to be set. (See libgfortran/runtime/error.c)
237 Therefore, the code to set these flags must be generated before
238 this function is used. */
239
240 static void
241 gfc_trans_io_runtime_check (bool has_iostat, tree cond, tree var,
242 int error_code, const char * msgid,
243 stmtblock_t * pblock)
244 {
245 stmtblock_t block;
246 tree body;
247 tree tmp;
248 tree arg1, arg2, arg3;
249 char *message;
250
251 if (integer_zerop (cond))
252 return;
253
254 /* The code to generate the error. */
255 gfc_start_block (&block);
256
257 if (has_iostat)
258 gfc_add_expr_to_block (&block, build_predict_expr (PRED_FORTRAN_FAIL_IO,
259 NOT_TAKEN));
260 else
261 gfc_add_expr_to_block (&block, build_predict_expr (PRED_NORETURN,
262 NOT_TAKEN));
263
264 arg1 = gfc_build_addr_expr (NULL_TREE, var);
265
266 arg2 = build_int_cst (integer_type_node, error_code),
267
268 message = xasprintf ("%s", _(msgid));
269 arg3 = gfc_build_addr_expr (pchar_type_node,
270 gfc_build_localized_cstring_const (message));
271 free (message);
272
273 tmp = build_call_expr_loc (input_location,
274 gfor_fndecl_generate_error, 3, arg1, arg2, arg3);
275
276 gfc_add_expr_to_block (&block, tmp);
277
278 body = gfc_finish_block (&block);
279
280 if (integer_onep (cond))
281 {
282 gfc_add_expr_to_block (pblock, body);
283 }
284 else
285 {
286 tmp = build3_v (COND_EXPR, cond, body, build_empty_stmt (input_location));
287 gfc_add_expr_to_block (pblock, tmp);
288 }
289 }
290
291
292 /* Create function decls for IO library functions. */
293
294 void
295 gfc_build_io_library_fndecls (void)
296 {
297 tree types[IOPARM_type_num], pad_idx, gfc_int4_type_node;
298 tree gfc_intio_type_node;
299 tree parm_type, dt_parm_type;
300 HOST_WIDE_INT pad_size;
301 unsigned int ptype;
302
303 types[IOPARM_type_int4] = gfc_int4_type_node = gfc_get_int_type (4);
304 types[IOPARM_type_intio] = gfc_intio_type_node
305 = gfc_get_int_type (gfc_intio_kind);
306 types[IOPARM_type_pint4] = build_pointer_type (gfc_int4_type_node);
307 types[IOPARM_type_pintio]
308 = build_pointer_type (gfc_intio_type_node);
309 types[IOPARM_type_parray] = pchar_type_node;
310 types[IOPARM_type_pchar] = pchar_type_node;
311 pad_size = 16 * TREE_INT_CST_LOW (TYPE_SIZE_UNIT (pchar_type_node));
312 pad_size += 32 * TREE_INT_CST_LOW (TYPE_SIZE_UNIT (integer_type_node));
313 pad_idx = build_index_type (size_int (pad_size - 1));
314 types[IOPARM_type_pad] = build_array_type (char_type_node, pad_idx);
315
316 /* pad actually contains pointers and integers so it needs to have an
317 alignment that is at least as large as the needed alignment for those
318 types. See the st_parameter_dt structure in libgfortran/io/io.h for
319 what really goes into this space. */
320 SET_TYPE_ALIGN (types[IOPARM_type_pad], MAX (TYPE_ALIGN (pchar_type_node),
321 TYPE_ALIGN (gfc_get_int_type (gfc_intio_kind))));
322
323 for (ptype = IOPARM_ptype_common; ptype < IOPARM_ptype_num; ptype++)
324 gfc_build_st_parameter ((enum ioparam_type) ptype, types);
325
326 /* Define the transfer functions. */
327
328 dt_parm_type = build_pointer_type (st_parameter[IOPARM_ptype_dt].type);
329
330 iocall[IOCALL_X_INTEGER] = gfc_build_library_function_decl_with_spec (
331 get_identifier (PREFIX("transfer_integer")), ".wW",
332 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
333
334 iocall[IOCALL_X_INTEGER_WRITE] = gfc_build_library_function_decl_with_spec (
335 get_identifier (PREFIX("transfer_integer_write")), ".wR",
336 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
337
338 iocall[IOCALL_X_LOGICAL] = gfc_build_library_function_decl_with_spec (
339 get_identifier (PREFIX("transfer_logical")), ".wW",
340 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
341
342 iocall[IOCALL_X_LOGICAL_WRITE] = gfc_build_library_function_decl_with_spec (
343 get_identifier (PREFIX("transfer_logical_write")), ".wR",
344 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
345
346 iocall[IOCALL_X_CHARACTER] = gfc_build_library_function_decl_with_spec (
347 get_identifier (PREFIX("transfer_character")), ".wW",
348 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
349
350 iocall[IOCALL_X_CHARACTER_WRITE] = gfc_build_library_function_decl_with_spec (
351 get_identifier (PREFIX("transfer_character_write")), ".wR",
352 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
353
354 iocall[IOCALL_X_CHARACTER_WIDE] = gfc_build_library_function_decl_with_spec (
355 get_identifier (PREFIX("transfer_character_wide")), ".wW",
356 void_type_node, 4, dt_parm_type, pvoid_type_node,
357 gfc_charlen_type_node, gfc_int4_type_node);
358
359 iocall[IOCALL_X_CHARACTER_WIDE_WRITE] =
360 gfc_build_library_function_decl_with_spec (
361 get_identifier (PREFIX("transfer_character_wide_write")), ".wR",
362 void_type_node, 4, dt_parm_type, pvoid_type_node,
363 gfc_charlen_type_node, gfc_int4_type_node);
364
365 iocall[IOCALL_X_REAL] = gfc_build_library_function_decl_with_spec (
366 get_identifier (PREFIX("transfer_real")), ".wW",
367 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
368
369 iocall[IOCALL_X_REAL_WRITE] = gfc_build_library_function_decl_with_spec (
370 get_identifier (PREFIX("transfer_real_write")), ".wR",
371 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
372
373 iocall[IOCALL_X_COMPLEX] = gfc_build_library_function_decl_with_spec (
374 get_identifier (PREFIX("transfer_complex")), ".wW",
375 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
376
377 iocall[IOCALL_X_COMPLEX_WRITE] = gfc_build_library_function_decl_with_spec (
378 get_identifier (PREFIX("transfer_complex_write")), ".wR",
379 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
380
381 /* Version for __float128. */
382 iocall[IOCALL_X_REAL128] = gfc_build_library_function_decl_with_spec (
383 get_identifier (PREFIX("transfer_real128")), ".wW",
384 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
385
386 iocall[IOCALL_X_REAL128_WRITE] = gfc_build_library_function_decl_with_spec (
387 get_identifier (PREFIX("transfer_real128_write")), ".wR",
388 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
389
390 iocall[IOCALL_X_COMPLEX128] = gfc_build_library_function_decl_with_spec (
391 get_identifier (PREFIX("transfer_complex128")), ".wW",
392 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
393
394 iocall[IOCALL_X_COMPLEX128_WRITE] = gfc_build_library_function_decl_with_spec (
395 get_identifier (PREFIX("transfer_complex128_write")), ".wR",
396 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
397
398 iocall[IOCALL_X_ARRAY] = gfc_build_library_function_decl_with_spec (
399 get_identifier (PREFIX("transfer_array")), ".ww",
400 void_type_node, 4, dt_parm_type, pvoid_type_node,
401 integer_type_node, gfc_charlen_type_node);
402
403 iocall[IOCALL_X_ARRAY_WRITE] = gfc_build_library_function_decl_with_spec (
404 get_identifier (PREFIX("transfer_array_write")), ".wr",
405 void_type_node, 4, dt_parm_type, pvoid_type_node,
406 integer_type_node, gfc_charlen_type_node);
407
408 iocall[IOCALL_X_DERIVED] = gfc_build_library_function_decl_with_spec (
409 get_identifier (PREFIX("transfer_derived")), ".wrR",
410 void_type_node, 2, dt_parm_type, pvoid_type_node, pchar_type_node);
411
412 /* Library entry points */
413
414 iocall[IOCALL_READ] = gfc_build_library_function_decl_with_spec (
415 get_identifier (PREFIX("st_read")), ".w",
416 void_type_node, 1, dt_parm_type);
417
418 iocall[IOCALL_WRITE] = gfc_build_library_function_decl_with_spec (
419 get_identifier (PREFIX("st_write")), ".w",
420 void_type_node, 1, dt_parm_type);
421
422 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_open].type);
423 iocall[IOCALL_OPEN] = gfc_build_library_function_decl_with_spec (
424 get_identifier (PREFIX("st_open")), ".w",
425 void_type_node, 1, parm_type);
426
427 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_close].type);
428 iocall[IOCALL_CLOSE] = gfc_build_library_function_decl_with_spec (
429 get_identifier (PREFIX("st_close")), ".w",
430 void_type_node, 1, parm_type);
431
432 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_inquire].type);
433 iocall[IOCALL_INQUIRE] = gfc_build_library_function_decl_with_spec (
434 get_identifier (PREFIX("st_inquire")), ".w",
435 void_type_node, 1, parm_type);
436
437 iocall[IOCALL_IOLENGTH] = gfc_build_library_function_decl_with_spec(
438 get_identifier (PREFIX("st_iolength")), ".w",
439 void_type_node, 1, dt_parm_type);
440
441 /* TODO: Change when asynchronous I/O is implemented. */
442 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_wait].type);
443 iocall[IOCALL_WAIT] = gfc_build_library_function_decl_with_spec (
444 get_identifier (PREFIX("st_wait")), ".X",
445 void_type_node, 1, parm_type);
446
447 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_filepos].type);
448 iocall[IOCALL_REWIND] = gfc_build_library_function_decl_with_spec (
449 get_identifier (PREFIX("st_rewind")), ".w",
450 void_type_node, 1, parm_type);
451
452 iocall[IOCALL_BACKSPACE] = gfc_build_library_function_decl_with_spec (
453 get_identifier (PREFIX("st_backspace")), ".w",
454 void_type_node, 1, parm_type);
455
456 iocall[IOCALL_ENDFILE] = gfc_build_library_function_decl_with_spec (
457 get_identifier (PREFIX("st_endfile")), ".w",
458 void_type_node, 1, parm_type);
459
460 iocall[IOCALL_FLUSH] = gfc_build_library_function_decl_with_spec (
461 get_identifier (PREFIX("st_flush")), ".w",
462 void_type_node, 1, parm_type);
463
464 /* Library helpers */
465
466 iocall[IOCALL_READ_DONE] = gfc_build_library_function_decl_with_spec (
467 get_identifier (PREFIX("st_read_done")), ".w",
468 void_type_node, 1, dt_parm_type);
469
470 iocall[IOCALL_WRITE_DONE] = gfc_build_library_function_decl_with_spec (
471 get_identifier (PREFIX("st_write_done")), ".w",
472 void_type_node, 1, dt_parm_type);
473
474 iocall[IOCALL_IOLENGTH_DONE] = gfc_build_library_function_decl_with_spec (
475 get_identifier (PREFIX("st_iolength_done")), ".w",
476 void_type_node, 1, dt_parm_type);
477
478 iocall[IOCALL_SET_NML_VAL] = gfc_build_library_function_decl_with_spec (
479 get_identifier (PREFIX("st_set_nml_var")), ".w.R",
480 void_type_node, 6, dt_parm_type, pvoid_type_node, pvoid_type_node,
481 gfc_int4_type_node, gfc_charlen_type_node, gfc_int4_type_node);
482
483 iocall[IOCALL_SET_NML_DTIO_VAL] = gfc_build_library_function_decl_with_spec (
484 get_identifier (PREFIX("st_set_nml_dtio_var")), ".w.R",
485 void_type_node, 8, dt_parm_type, pvoid_type_node, pvoid_type_node,
486 gfc_int4_type_node, gfc_charlen_type_node, gfc_int4_type_node,
487 pvoid_type_node, pvoid_type_node);
488
489 iocall[IOCALL_SET_NML_VAL_DIM] = gfc_build_library_function_decl_with_spec (
490 get_identifier (PREFIX("st_set_nml_var_dim")), ".w",
491 void_type_node, 5, dt_parm_type, gfc_int4_type_node,
492 gfc_array_index_type, gfc_array_index_type, gfc_array_index_type);
493 }
494
495
496 static void
497 set_parameter_tree (stmtblock_t *block, tree var, enum iofield type, tree value)
498 {
499 tree tmp;
500 gfc_st_parameter_field *p = &st_parameter_field[type];
501
502 if (p->param_type == IOPARM_ptype_common)
503 var = fold_build3_loc (input_location, COMPONENT_REF,
504 st_parameter[IOPARM_ptype_common].type,
505 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
506 tmp = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (p->field),
507 var, p->field, NULL_TREE);
508 gfc_add_modify (block, tmp, value);
509 }
510
511
512 /* Generate code to store an integer constant into the
513 st_parameter_XXX structure. */
514
515 static unsigned int
516 set_parameter_const (stmtblock_t *block, tree var, enum iofield type,
517 unsigned int val)
518 {
519 gfc_st_parameter_field *p = &st_parameter_field[type];
520
521 set_parameter_tree (block, var, type,
522 build_int_cst (TREE_TYPE (p->field), val));
523 return p->mask;
524 }
525
526
527 /* Generate code to store a non-string I/O parameter into the
528 st_parameter_XXX structure. This is a pass by value. */
529
530 static unsigned int
531 set_parameter_value (stmtblock_t *block, tree var, enum iofield type,
532 gfc_expr *e)
533 {
534 gfc_se se;
535 tree tmp;
536 gfc_st_parameter_field *p = &st_parameter_field[type];
537 tree dest_type = TREE_TYPE (p->field);
538
539 gfc_init_se (&se, NULL);
540 gfc_conv_expr_val (&se, e);
541
542 se.expr = convert (dest_type, se.expr);
543 gfc_add_block_to_block (block, &se.pre);
544
545 if (p->param_type == IOPARM_ptype_common)
546 var = fold_build3_loc (input_location, COMPONENT_REF,
547 st_parameter[IOPARM_ptype_common].type,
548 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
549
550 tmp = fold_build3_loc (input_location, COMPONENT_REF, dest_type, var,
551 p->field, NULL_TREE);
552 gfc_add_modify (block, tmp, se.expr);
553 return p->mask;
554 }
555
556
557 /* Similar to set_parameter_value except generate runtime
558 error checks. */
559
560 static unsigned int
561 set_parameter_value_chk (stmtblock_t *block, bool has_iostat, tree var,
562 enum iofield type, gfc_expr *e)
563 {
564 gfc_se se;
565 tree tmp;
566 gfc_st_parameter_field *p = &st_parameter_field[type];
567 tree dest_type = TREE_TYPE (p->field);
568
569 gfc_init_se (&se, NULL);
570 gfc_conv_expr_val (&se, e);
571
572 /* If we're storing a UNIT number, we need to check it first. */
573 if (type == IOPARM_common_unit && e->ts.kind > 4)
574 {
575 tree cond, val;
576 int i;
577
578 /* Don't evaluate the UNIT number multiple times. */
579 se.expr = gfc_evaluate_now (se.expr, &se.pre);
580
581 /* UNIT numbers should be greater than the min. */
582 i = gfc_validate_kind (BT_INTEGER, 4, false);
583 val = gfc_conv_mpz_to_tree (gfc_integer_kinds[i].pedantic_min_int, 4);
584 cond = fold_build2_loc (input_location, LT_EXPR, boolean_type_node,
585 se.expr,
586 fold_convert (TREE_TYPE (se.expr), val));
587 gfc_trans_io_runtime_check (has_iostat, cond, var, LIBERROR_BAD_UNIT,
588 "Unit number in I/O statement too small",
589 &se.pre);
590
591 /* UNIT numbers should be less than the max. */
592 val = gfc_conv_mpz_to_tree (gfc_integer_kinds[i].huge, 4);
593 cond = fold_build2_loc (input_location, GT_EXPR, boolean_type_node,
594 se.expr,
595 fold_convert (TREE_TYPE (se.expr), val));
596 gfc_trans_io_runtime_check (has_iostat, cond, var, LIBERROR_BAD_UNIT,
597 "Unit number in I/O statement too large",
598 &se.pre);
599 }
600
601 se.expr = convert (dest_type, se.expr);
602 gfc_add_block_to_block (block, &se.pre);
603
604 if (p->param_type == IOPARM_ptype_common)
605 var = fold_build3_loc (input_location, COMPONENT_REF,
606 st_parameter[IOPARM_ptype_common].type,
607 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
608
609 tmp = fold_build3_loc (input_location, COMPONENT_REF, dest_type, var,
610 p->field, NULL_TREE);
611 gfc_add_modify (block, tmp, se.expr);
612 return p->mask;
613 }
614
615
616 /* Build code to check the unit range if KIND=8 is used. Similar to
617 set_parameter_value_chk but we do not generate error calls for
618 inquire statements. */
619
620 static unsigned int
621 set_parameter_value_inquire (stmtblock_t *block, tree var,
622 enum iofield type, gfc_expr *e)
623 {
624 gfc_se se;
625 gfc_st_parameter_field *p = &st_parameter_field[type];
626 tree dest_type = TREE_TYPE (p->field);
627
628 gfc_init_se (&se, NULL);
629 gfc_conv_expr_val (&se, e);
630
631 /* If we're inquiring on a UNIT number, we need to check to make
632 sure it exists for larger than kind = 4. */
633 if (type == IOPARM_common_unit && e->ts.kind > 4)
634 {
635 stmtblock_t newblock;
636 tree cond1, cond2, cond3, val, body;
637 int i;
638
639 /* Don't evaluate the UNIT number multiple times. */
640 se.expr = gfc_evaluate_now (se.expr, &se.pre);
641
642 /* UNIT numbers should be greater than zero. */
643 i = gfc_validate_kind (BT_INTEGER, 4, false);
644 cond1 = build2_loc (input_location, LT_EXPR, boolean_type_node,
645 se.expr,
646 fold_convert (TREE_TYPE (se.expr),
647 integer_zero_node));
648 /* UNIT numbers should be less than the max. */
649 val = gfc_conv_mpz_to_tree (gfc_integer_kinds[i].huge, 4);
650 cond2 = build2_loc (input_location, GT_EXPR, boolean_type_node,
651 se.expr,
652 fold_convert (TREE_TYPE (se.expr), val));
653 cond3 = build2_loc (input_location, TRUTH_OR_EXPR,
654 boolean_type_node, cond1, cond2);
655
656 gfc_start_block (&newblock);
657
658 /* The unit number GFC_INVALID_UNIT is reserved. No units can
659 ever have this value. It is used here to signal to the
660 runtime library that the inquire unit number is outside the
661 allowable range and so cannot exist. It is needed when
662 -fdefault-integer-8 is used. */
663 set_parameter_const (&newblock, var, IOPARM_common_unit,
664 GFC_INVALID_UNIT);
665
666 body = gfc_finish_block (&newblock);
667
668 cond3 = gfc_unlikely (cond3, PRED_FORTRAN_FAIL_IO);
669 var = build3_v (COND_EXPR, cond3, body, build_empty_stmt (input_location));
670 gfc_add_expr_to_block (&se.pre, var);
671 }
672
673 se.expr = convert (dest_type, se.expr);
674 gfc_add_block_to_block (block, &se.pre);
675
676 return p->mask;
677 }
678
679
680 /* Generate code to store a non-string I/O parameter into the
681 st_parameter_XXX structure. This is pass by reference. */
682
683 static unsigned int
684 set_parameter_ref (stmtblock_t *block, stmtblock_t *postblock,
685 tree var, enum iofield type, gfc_expr *e)
686 {
687 gfc_se se;
688 tree tmp, addr;
689 gfc_st_parameter_field *p = &st_parameter_field[type];
690
691 gcc_assert (e->ts.type == BT_INTEGER || e->ts.type == BT_LOGICAL);
692 gfc_init_se (&se, NULL);
693 gfc_conv_expr_lhs (&se, e);
694
695 gfc_add_block_to_block (block, &se.pre);
696
697 if (TYPE_MODE (TREE_TYPE (se.expr))
698 == TYPE_MODE (TREE_TYPE (TREE_TYPE (p->field))))
699 {
700 addr = convert (TREE_TYPE (p->field), gfc_build_addr_expr (NULL_TREE, se.expr));
701
702 /* If this is for the iostat variable initialize the
703 user variable to LIBERROR_OK which is zero. */
704 if (type == IOPARM_common_iostat)
705 gfc_add_modify (block, se.expr,
706 build_int_cst (TREE_TYPE (se.expr), LIBERROR_OK));
707 }
708 else
709 {
710 /* The type used by the library has different size
711 from the type of the variable supplied by the user.
712 Need to use a temporary. */
713 tree tmpvar = gfc_create_var (TREE_TYPE (TREE_TYPE (p->field)),
714 st_parameter_field[type].name);
715
716 /* If this is for the iostat variable, initialize the
717 user variable to LIBERROR_OK which is zero. */
718 if (type == IOPARM_common_iostat)
719 gfc_add_modify (block, tmpvar,
720 build_int_cst (TREE_TYPE (tmpvar), LIBERROR_OK));
721
722 addr = gfc_build_addr_expr (NULL_TREE, tmpvar);
723 /* After the I/O operation, we set the variable from the temporary. */
724 tmp = convert (TREE_TYPE (se.expr), tmpvar);
725 gfc_add_modify (postblock, se.expr, tmp);
726 }
727
728 set_parameter_tree (block, var, type, addr);
729 return p->mask;
730 }
731
732 /* Given an array expr, find its address and length to get a string. If the
733 array is full, the string's address is the address of array's first element
734 and the length is the size of the whole array. If it is an element, the
735 string's address is the element's address and the length is the rest size of
736 the array. */
737
738 static void
739 gfc_convert_array_to_string (gfc_se * se, gfc_expr * e)
740 {
741 tree size;
742
743 if (e->rank == 0)
744 {
745 tree type, array, tmp;
746 gfc_symbol *sym;
747 int rank;
748
749 /* If it is an element, we need its address and size of the rest. */
750 gcc_assert (e->expr_type == EXPR_VARIABLE);
751 gcc_assert (e->ref->u.ar.type == AR_ELEMENT);
752 sym = e->symtree->n.sym;
753 rank = sym->as->rank - 1;
754 gfc_conv_expr (se, e);
755
756 array = sym->backend_decl;
757 type = TREE_TYPE (array);
758
759 if (GFC_ARRAY_TYPE_P (type))
760 size = GFC_TYPE_ARRAY_SIZE (type);
761 else
762 {
763 gcc_assert (GFC_DESCRIPTOR_TYPE_P (type));
764 size = gfc_conv_array_stride (array, rank);
765 tmp = fold_build2_loc (input_location, MINUS_EXPR,
766 gfc_array_index_type,
767 gfc_conv_array_ubound (array, rank),
768 gfc_conv_array_lbound (array, rank));
769 tmp = fold_build2_loc (input_location, PLUS_EXPR,
770 gfc_array_index_type, tmp,
771 gfc_index_one_node);
772 size = fold_build2_loc (input_location, MULT_EXPR,
773 gfc_array_index_type, tmp, size);
774 }
775 gcc_assert (size);
776
777 size = fold_build2_loc (input_location, MINUS_EXPR,
778 gfc_array_index_type, size,
779 TREE_OPERAND (se->expr, 1));
780 se->expr = gfc_build_addr_expr (NULL_TREE, se->expr);
781 tmp = TYPE_SIZE_UNIT (gfc_get_element_type (type));
782 size = fold_build2_loc (input_location, MULT_EXPR,
783 gfc_array_index_type, size,
784 fold_convert (gfc_array_index_type, tmp));
785 se->string_length = fold_convert (gfc_charlen_type_node, size);
786 return;
787 }
788
789 gfc_conv_array_parameter (se, e, true, NULL, NULL, &size);
790 se->string_length = fold_convert (gfc_charlen_type_node, size);
791 }
792
793
794 /* Generate code to store a string and its length into the
795 st_parameter_XXX structure. */
796
797 static unsigned int
798 set_string (stmtblock_t * block, stmtblock_t * postblock, tree var,
799 enum iofield type, gfc_expr * e)
800 {
801 gfc_se se;
802 tree tmp;
803 tree io;
804 tree len;
805 gfc_st_parameter_field *p = &st_parameter_field[type];
806
807 gfc_init_se (&se, NULL);
808
809 if (p->param_type == IOPARM_ptype_common)
810 var = fold_build3_loc (input_location, COMPONENT_REF,
811 st_parameter[IOPARM_ptype_common].type,
812 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
813 io = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (p->field),
814 var, p->field, NULL_TREE);
815 len = fold_build3_loc (input_location, COMPONENT_REF,
816 TREE_TYPE (p->field_len),
817 var, p->field_len, NULL_TREE);
818
819 /* Integer variable assigned a format label. */
820 if (e->ts.type == BT_INTEGER
821 && e->rank == 0
822 && e->symtree->n.sym->attr.assign == 1)
823 {
824 char * msg;
825 tree cond;
826
827 gfc_conv_label_variable (&se, e);
828 tmp = GFC_DECL_STRING_LEN (se.expr);
829 cond = fold_build2_loc (input_location, LT_EXPR, boolean_type_node,
830 tmp, build_int_cst (TREE_TYPE (tmp), 0));
831
832 msg = xasprintf ("Label assigned to variable '%s' (%%ld) is not a format "
833 "label", e->symtree->name);
834 gfc_trans_runtime_check (true, false, cond, &se.pre, &e->where, msg,
835 fold_convert (long_integer_type_node, tmp));
836 free (msg);
837
838 gfc_add_modify (&se.pre, io,
839 fold_convert (TREE_TYPE (io), GFC_DECL_ASSIGN_ADDR (se.expr)));
840 gfc_add_modify (&se.pre, len, GFC_DECL_STRING_LEN (se.expr));
841 }
842 else
843 {
844 /* General character. */
845 if (e->ts.type == BT_CHARACTER && e->rank == 0)
846 gfc_conv_expr (&se, e);
847 /* Array assigned Hollerith constant or character array. */
848 else if (e->rank > 0 || (e->symtree && e->symtree->n.sym->as->rank > 0))
849 gfc_convert_array_to_string (&se, e);
850 else
851 gcc_unreachable ();
852
853 gfc_conv_string_parameter (&se);
854 gfc_add_modify (&se.pre, io, fold_convert (TREE_TYPE (io), se.expr));
855 gfc_add_modify (&se.pre, len, se.string_length);
856 }
857
858 gfc_add_block_to_block (block, &se.pre);
859 gfc_add_block_to_block (postblock, &se.post);
860 return p->mask;
861 }
862
863
864 /* Generate code to store the character (array) and the character length
865 for an internal unit. */
866
867 static unsigned int
868 set_internal_unit (stmtblock_t * block, stmtblock_t * post_block,
869 tree var, gfc_expr * e)
870 {
871 gfc_se se;
872 tree io;
873 tree len;
874 tree desc;
875 tree tmp;
876 gfc_st_parameter_field *p;
877 unsigned int mask;
878
879 gfc_init_se (&se, NULL);
880
881 p = &st_parameter_field[IOPARM_dt_internal_unit];
882 mask = p->mask;
883 io = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (p->field),
884 var, p->field, NULL_TREE);
885 len = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (p->field_len),
886 var, p->field_len, NULL_TREE);
887 p = &st_parameter_field[IOPARM_dt_internal_unit_desc];
888 desc = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (p->field),
889 var, p->field, NULL_TREE);
890
891 gcc_assert (e->ts.type == BT_CHARACTER);
892
893 /* Character scalars. */
894 if (e->rank == 0)
895 {
896 gfc_conv_expr (&se, e);
897 gfc_conv_string_parameter (&se);
898 tmp = se.expr;
899 se.expr = build_int_cst (pchar_type_node, 0);
900 }
901
902 /* Character array. */
903 else if (e->rank > 0)
904 {
905 if (is_subref_array (e))
906 {
907 /* Use a temporary for components of arrays of derived types
908 or substring array references. */
909 gfc_conv_subref_array_arg (&se, e, 0,
910 last_dt == READ ? INTENT_IN : INTENT_OUT, false);
911 tmp = build_fold_indirect_ref_loc (input_location,
912 se.expr);
913 se.expr = gfc_build_addr_expr (pchar_type_node, tmp);
914 tmp = gfc_conv_descriptor_data_get (tmp);
915 }
916 else
917 {
918 /* Return the data pointer and rank from the descriptor. */
919 gfc_conv_expr_descriptor (&se, e);
920 tmp = gfc_conv_descriptor_data_get (se.expr);
921 se.expr = gfc_build_addr_expr (pchar_type_node, se.expr);
922 }
923 }
924 else
925 gcc_unreachable ();
926
927 /* The cast is needed for character substrings and the descriptor
928 data. */
929 gfc_add_modify (&se.pre, io, fold_convert (TREE_TYPE (io), tmp));
930 gfc_add_modify (&se.pre, len,
931 fold_convert (TREE_TYPE (len), se.string_length));
932 gfc_add_modify (&se.pre, desc, se.expr);
933
934 gfc_add_block_to_block (block, &se.pre);
935 gfc_add_block_to_block (post_block, &se.post);
936 return mask;
937 }
938
939 /* Add a case to a IO-result switch. */
940
941 static void
942 add_case (int label_value, gfc_st_label * label, stmtblock_t * body)
943 {
944 tree tmp, value;
945
946 if (label == NULL)
947 return; /* No label, no case */
948
949 value = build_int_cst (integer_type_node, label_value);
950
951 /* Make a backend label for this case. */
952 tmp = gfc_build_label_decl (NULL_TREE);
953
954 /* And the case itself. */
955 tmp = build_case_label (value, NULL_TREE, tmp);
956 gfc_add_expr_to_block (body, tmp);
957
958 /* Jump to the label. */
959 tmp = build1_v (GOTO_EXPR, gfc_get_label_decl (label));
960 gfc_add_expr_to_block (body, tmp);
961 }
962
963
964 /* Generate a switch statement that branches to the correct I/O
965 result label. The last statement of an I/O call stores the
966 result into a variable because there is often cleanup that
967 must be done before the switch, so a temporary would have to
968 be created anyway. */
969
970 static void
971 io_result (stmtblock_t * block, tree var, gfc_st_label * err_label,
972 gfc_st_label * end_label, gfc_st_label * eor_label)
973 {
974 stmtblock_t body;
975 tree tmp, rc;
976 gfc_st_parameter_field *p = &st_parameter_field[IOPARM_common_flags];
977
978 /* If no labels are specified, ignore the result instead
979 of building an empty switch. */
980 if (err_label == NULL
981 && end_label == NULL
982 && eor_label == NULL)
983 return;
984
985 /* Build a switch statement. */
986 gfc_start_block (&body);
987
988 /* The label values here must be the same as the values
989 in the library_return enum in the runtime library */
990 add_case (1, err_label, &body);
991 add_case (2, end_label, &body);
992 add_case (3, eor_label, &body);
993
994 tmp = gfc_finish_block (&body);
995
996 var = fold_build3_loc (input_location, COMPONENT_REF,
997 st_parameter[IOPARM_ptype_common].type,
998 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
999 rc = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (p->field),
1000 var, p->field, NULL_TREE);
1001 rc = fold_build2_loc (input_location, BIT_AND_EXPR, TREE_TYPE (rc),
1002 rc, build_int_cst (TREE_TYPE (rc),
1003 IOPARM_common_libreturn_mask));
1004
1005 tmp = fold_build3_loc (input_location, SWITCH_EXPR, NULL_TREE,
1006 rc, tmp, NULL_TREE);
1007
1008 gfc_add_expr_to_block (block, tmp);
1009 }
1010
1011
1012 /* Store the current file and line number to variables so that if a
1013 library call goes awry, we can tell the user where the problem is. */
1014
1015 static void
1016 set_error_locus (stmtblock_t * block, tree var, locus * where)
1017 {
1018 gfc_file *f;
1019 tree str, locus_file;
1020 int line;
1021 gfc_st_parameter_field *p = &st_parameter_field[IOPARM_common_filename];
1022
1023 locus_file = fold_build3_loc (input_location, COMPONENT_REF,
1024 st_parameter[IOPARM_ptype_common].type,
1025 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
1026 locus_file = fold_build3_loc (input_location, COMPONENT_REF,
1027 TREE_TYPE (p->field), locus_file,
1028 p->field, NULL_TREE);
1029 f = where->lb->file;
1030 str = gfc_build_cstring_const (f->filename);
1031
1032 str = gfc_build_addr_expr (pchar_type_node, str);
1033 gfc_add_modify (block, locus_file, str);
1034
1035 line = LOCATION_LINE (where->lb->location);
1036 set_parameter_const (block, var, IOPARM_common_line, line);
1037 }
1038
1039
1040 /* Translate an OPEN statement. */
1041
1042 tree
1043 gfc_trans_open (gfc_code * code)
1044 {
1045 stmtblock_t block, post_block;
1046 gfc_open *p;
1047 tree tmp, var;
1048 unsigned int mask = 0;
1049
1050 gfc_start_block (&block);
1051 gfc_init_block (&post_block);
1052
1053 var = gfc_create_var (st_parameter[IOPARM_ptype_open].type, "open_parm");
1054
1055 set_error_locus (&block, var, &code->loc);
1056 p = code->ext.open;
1057
1058 if (p->iomsg)
1059 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1060 p->iomsg);
1061
1062 if (p->iostat)
1063 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat,
1064 p->iostat);
1065
1066 if (p->err)
1067 mask |= IOPARM_common_err;
1068
1069 if (p->file)
1070 mask |= set_string (&block, &post_block, var, IOPARM_open_file, p->file);
1071
1072 if (p->status)
1073 mask |= set_string (&block, &post_block, var, IOPARM_open_status,
1074 p->status);
1075
1076 if (p->access)
1077 mask |= set_string (&block, &post_block, var, IOPARM_open_access,
1078 p->access);
1079
1080 if (p->form)
1081 mask |= set_string (&block, &post_block, var, IOPARM_open_form, p->form);
1082
1083 if (p->recl)
1084 mask |= set_parameter_value (&block, var, IOPARM_open_recl_in,
1085 p->recl);
1086
1087 if (p->blank)
1088 mask |= set_string (&block, &post_block, var, IOPARM_open_blank,
1089 p->blank);
1090
1091 if (p->position)
1092 mask |= set_string (&block, &post_block, var, IOPARM_open_position,
1093 p->position);
1094
1095 if (p->action)
1096 mask |= set_string (&block, &post_block, var, IOPARM_open_action,
1097 p->action);
1098
1099 if (p->delim)
1100 mask |= set_string (&block, &post_block, var, IOPARM_open_delim,
1101 p->delim);
1102
1103 if (p->pad)
1104 mask |= set_string (&block, &post_block, var, IOPARM_open_pad, p->pad);
1105
1106 if (p->decimal)
1107 mask |= set_string (&block, &post_block, var, IOPARM_open_decimal,
1108 p->decimal);
1109
1110 if (p->encoding)
1111 mask |= set_string (&block, &post_block, var, IOPARM_open_encoding,
1112 p->encoding);
1113
1114 if (p->round)
1115 mask |= set_string (&block, &post_block, var, IOPARM_open_round, p->round);
1116
1117 if (p->sign)
1118 mask |= set_string (&block, &post_block, var, IOPARM_open_sign, p->sign);
1119
1120 if (p->asynchronous)
1121 mask |= set_string (&block, &post_block, var, IOPARM_open_asynchronous,
1122 p->asynchronous);
1123
1124 if (p->convert)
1125 mask |= set_string (&block, &post_block, var, IOPARM_open_convert,
1126 p->convert);
1127
1128 if (p->newunit)
1129 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_open_newunit,
1130 p->newunit);
1131
1132 if (p->cc)
1133 mask |= set_string (&block, &post_block, var, IOPARM_open_cc, p->cc);
1134
1135 if (p->share)
1136 mask |= set_string (&block, &post_block, var, IOPARM_open_share, p->share);
1137
1138 mask |= set_parameter_const (&block, var, IOPARM_open_readonly, p->readonly);
1139
1140 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1141
1142 if (p->unit)
1143 set_parameter_value_chk (&block, p->iostat, var, IOPARM_common_unit, p->unit);
1144 else
1145 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1146
1147 tmp = gfc_build_addr_expr (NULL_TREE, var);
1148 tmp = build_call_expr_loc (input_location,
1149 iocall[IOCALL_OPEN], 1, tmp);
1150 gfc_add_expr_to_block (&block, tmp);
1151
1152 gfc_add_block_to_block (&block, &post_block);
1153
1154 io_result (&block, var, p->err, NULL, NULL);
1155
1156 return gfc_finish_block (&block);
1157 }
1158
1159
1160 /* Translate a CLOSE statement. */
1161
1162 tree
1163 gfc_trans_close (gfc_code * code)
1164 {
1165 stmtblock_t block, post_block;
1166 gfc_close *p;
1167 tree tmp, var;
1168 unsigned int mask = 0;
1169
1170 gfc_start_block (&block);
1171 gfc_init_block (&post_block);
1172
1173 var = gfc_create_var (st_parameter[IOPARM_ptype_close].type, "close_parm");
1174
1175 set_error_locus (&block, var, &code->loc);
1176 p = code->ext.close;
1177
1178 if (p->iomsg)
1179 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1180 p->iomsg);
1181
1182 if (p->iostat)
1183 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat,
1184 p->iostat);
1185
1186 if (p->err)
1187 mask |= IOPARM_common_err;
1188
1189 if (p->status)
1190 mask |= set_string (&block, &post_block, var, IOPARM_close_status,
1191 p->status);
1192
1193 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1194
1195 if (p->unit)
1196 set_parameter_value_chk (&block, p->iostat, var, IOPARM_common_unit, p->unit);
1197 else
1198 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1199
1200 tmp = gfc_build_addr_expr (NULL_TREE, var);
1201 tmp = build_call_expr_loc (input_location,
1202 iocall[IOCALL_CLOSE], 1, tmp);
1203 gfc_add_expr_to_block (&block, tmp);
1204
1205 gfc_add_block_to_block (&block, &post_block);
1206
1207 io_result (&block, var, p->err, NULL, NULL);
1208
1209 return gfc_finish_block (&block);
1210 }
1211
1212
1213 /* Common subroutine for building a file positioning statement. */
1214
1215 static tree
1216 build_filepos (tree function, gfc_code * code)
1217 {
1218 stmtblock_t block, post_block;
1219 gfc_filepos *p;
1220 tree tmp, var;
1221 unsigned int mask = 0;
1222
1223 p = code->ext.filepos;
1224
1225 gfc_start_block (&block);
1226 gfc_init_block (&post_block);
1227
1228 var = gfc_create_var (st_parameter[IOPARM_ptype_filepos].type,
1229 "filepos_parm");
1230
1231 set_error_locus (&block, var, &code->loc);
1232
1233 if (p->iomsg)
1234 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1235 p->iomsg);
1236
1237 if (p->iostat)
1238 mask |= set_parameter_ref (&block, &post_block, var,
1239 IOPARM_common_iostat, p->iostat);
1240
1241 if (p->err)
1242 mask |= IOPARM_common_err;
1243
1244 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1245
1246 if (p->unit)
1247 set_parameter_value_chk (&block, p->iostat, var, IOPARM_common_unit,
1248 p->unit);
1249 else
1250 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1251
1252 tmp = gfc_build_addr_expr (NULL_TREE, var);
1253 tmp = build_call_expr_loc (input_location,
1254 function, 1, tmp);
1255 gfc_add_expr_to_block (&block, tmp);
1256
1257 gfc_add_block_to_block (&block, &post_block);
1258
1259 io_result (&block, var, p->err, NULL, NULL);
1260
1261 return gfc_finish_block (&block);
1262 }
1263
1264
1265 /* Translate a BACKSPACE statement. */
1266
1267 tree
1268 gfc_trans_backspace (gfc_code * code)
1269 {
1270 return build_filepos (iocall[IOCALL_BACKSPACE], code);
1271 }
1272
1273
1274 /* Translate an ENDFILE statement. */
1275
1276 tree
1277 gfc_trans_endfile (gfc_code * code)
1278 {
1279 return build_filepos (iocall[IOCALL_ENDFILE], code);
1280 }
1281
1282
1283 /* Translate a REWIND statement. */
1284
1285 tree
1286 gfc_trans_rewind (gfc_code * code)
1287 {
1288 return build_filepos (iocall[IOCALL_REWIND], code);
1289 }
1290
1291
1292 /* Translate a FLUSH statement. */
1293
1294 tree
1295 gfc_trans_flush (gfc_code * code)
1296 {
1297 return build_filepos (iocall[IOCALL_FLUSH], code);
1298 }
1299
1300
1301 /* Translate the non-IOLENGTH form of an INQUIRE statement. */
1302
1303 tree
1304 gfc_trans_inquire (gfc_code * code)
1305 {
1306 stmtblock_t block, post_block;
1307 gfc_inquire *p;
1308 tree tmp, var;
1309 unsigned int mask = 0, mask2 = 0;
1310
1311 gfc_start_block (&block);
1312 gfc_init_block (&post_block);
1313
1314 var = gfc_create_var (st_parameter[IOPARM_ptype_inquire].type,
1315 "inquire_parm");
1316
1317 set_error_locus (&block, var, &code->loc);
1318 p = code->ext.inquire;
1319
1320 if (p->iomsg)
1321 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1322 p->iomsg);
1323
1324 if (p->iostat)
1325 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat,
1326 p->iostat);
1327
1328 if (p->err)
1329 mask |= IOPARM_common_err;
1330
1331 /* Sanity check. */
1332 if (p->unit && p->file)
1333 gfc_error ("INQUIRE statement at %L cannot contain both FILE and UNIT specifiers", &code->loc);
1334
1335 if (p->file)
1336 mask |= set_string (&block, &post_block, var, IOPARM_inquire_file,
1337 p->file);
1338
1339 if (p->exist)
1340 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_exist,
1341 p->exist);
1342
1343 if (p->opened)
1344 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_opened,
1345 p->opened);
1346
1347 if (p->number)
1348 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_number,
1349 p->number);
1350
1351 if (p->named)
1352 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_named,
1353 p->named);
1354
1355 if (p->name)
1356 mask |= set_string (&block, &post_block, var, IOPARM_inquire_name,
1357 p->name);
1358
1359 if (p->access)
1360 mask |= set_string (&block, &post_block, var, IOPARM_inquire_access,
1361 p->access);
1362
1363 if (p->sequential)
1364 mask |= set_string (&block, &post_block, var, IOPARM_inquire_sequential,
1365 p->sequential);
1366
1367 if (p->direct)
1368 mask |= set_string (&block, &post_block, var, IOPARM_inquire_direct,
1369 p->direct);
1370
1371 if (p->form)
1372 mask |= set_string (&block, &post_block, var, IOPARM_inquire_form,
1373 p->form);
1374
1375 if (p->formatted)
1376 mask |= set_string (&block, &post_block, var, IOPARM_inquire_formatted,
1377 p->formatted);
1378
1379 if (p->unformatted)
1380 mask |= set_string (&block, &post_block, var, IOPARM_inquire_unformatted,
1381 p->unformatted);
1382
1383 if (p->recl)
1384 mask |= set_parameter_ref (&block, &post_block, var,
1385 IOPARM_inquire_recl_out, p->recl);
1386
1387 if (p->nextrec)
1388 mask |= set_parameter_ref (&block, &post_block, var,
1389 IOPARM_inquire_nextrec, p->nextrec);
1390
1391 if (p->blank)
1392 mask |= set_string (&block, &post_block, var, IOPARM_inquire_blank,
1393 p->blank);
1394
1395 if (p->delim)
1396 mask |= set_string (&block, &post_block, var, IOPARM_inquire_delim,
1397 p->delim);
1398
1399 if (p->position)
1400 mask |= set_string (&block, &post_block, var, IOPARM_inquire_position,
1401 p->position);
1402
1403 if (p->action)
1404 mask |= set_string (&block, &post_block, var, IOPARM_inquire_action,
1405 p->action);
1406
1407 if (p->read)
1408 mask |= set_string (&block, &post_block, var, IOPARM_inquire_read,
1409 p->read);
1410
1411 if (p->write)
1412 mask |= set_string (&block, &post_block, var, IOPARM_inquire_write,
1413 p->write);
1414
1415 if (p->readwrite)
1416 mask |= set_string (&block, &post_block, var, IOPARM_inquire_readwrite,
1417 p->readwrite);
1418
1419 if (p->pad)
1420 mask |= set_string (&block, &post_block, var, IOPARM_inquire_pad,
1421 p->pad);
1422
1423 if (p->convert)
1424 mask |= set_string (&block, &post_block, var, IOPARM_inquire_convert,
1425 p->convert);
1426
1427 if (p->strm_pos)
1428 mask |= set_parameter_ref (&block, &post_block, var,
1429 IOPARM_inquire_strm_pos_out, p->strm_pos);
1430
1431 /* The second series of flags. */
1432 if (p->asynchronous)
1433 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_asynchronous,
1434 p->asynchronous);
1435
1436 if (p->decimal)
1437 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_decimal,
1438 p->decimal);
1439
1440 if (p->encoding)
1441 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_encoding,
1442 p->encoding);
1443
1444 if (p->round)
1445 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_round,
1446 p->round);
1447
1448 if (p->sign)
1449 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_sign,
1450 p->sign);
1451
1452 if (p->pending)
1453 mask2 |= set_parameter_ref (&block, &post_block, var,
1454 IOPARM_inquire_pending, p->pending);
1455
1456 if (p->size)
1457 mask2 |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_size,
1458 p->size);
1459
1460 if (p->id)
1461 mask2 |= set_parameter_ref (&block, &post_block,var, IOPARM_inquire_id,
1462 p->id);
1463 if (p->iqstream)
1464 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_iqstream,
1465 p->iqstream);
1466
1467 if (p->share)
1468 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_share,
1469 p->share);
1470
1471 if (p->cc)
1472 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_cc, p->cc);
1473
1474 if (mask2)
1475 mask |= set_parameter_const (&block, var, IOPARM_inquire_flags2, mask2);
1476
1477 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1478
1479 if (p->unit)
1480 {
1481 set_parameter_value (&block, var, IOPARM_common_unit, p->unit);
1482 set_parameter_value_inquire (&block, var, IOPARM_common_unit, p->unit);
1483 }
1484 else
1485 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1486
1487 tmp = gfc_build_addr_expr (NULL_TREE, var);
1488 tmp = build_call_expr_loc (input_location,
1489 iocall[IOCALL_INQUIRE], 1, tmp);
1490 gfc_add_expr_to_block (&block, tmp);
1491
1492 gfc_add_block_to_block (&block, &post_block);
1493
1494 io_result (&block, var, p->err, NULL, NULL);
1495
1496 return gfc_finish_block (&block);
1497 }
1498
1499
1500 tree
1501 gfc_trans_wait (gfc_code * code)
1502 {
1503 stmtblock_t block, post_block;
1504 gfc_wait *p;
1505 tree tmp, var;
1506 unsigned int mask = 0;
1507
1508 gfc_start_block (&block);
1509 gfc_init_block (&post_block);
1510
1511 var = gfc_create_var (st_parameter[IOPARM_ptype_wait].type,
1512 "wait_parm");
1513
1514 set_error_locus (&block, var, &code->loc);
1515 p = code->ext.wait;
1516
1517 /* Set parameters here. */
1518 if (p->iomsg)
1519 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1520 p->iomsg);
1521
1522 if (p->iostat)
1523 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat,
1524 p->iostat);
1525
1526 if (p->err)
1527 mask |= IOPARM_common_err;
1528
1529 if (p->id)
1530 mask |= set_parameter_value (&block, var, IOPARM_wait_id, p->id);
1531
1532 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1533
1534 if (p->unit)
1535 set_parameter_value_chk (&block, p->iostat, var, IOPARM_common_unit, p->unit);
1536
1537 tmp = gfc_build_addr_expr (NULL_TREE, var);
1538 tmp = build_call_expr_loc (input_location,
1539 iocall[IOCALL_WAIT], 1, tmp);
1540 gfc_add_expr_to_block (&block, tmp);
1541
1542 gfc_add_block_to_block (&block, &post_block);
1543
1544 io_result (&block, var, p->err, NULL, NULL);
1545
1546 return gfc_finish_block (&block);
1547
1548 }
1549
1550
1551 /* nml_full_name builds up the fully qualified name of a
1552 derived type component. '+' is used to denote a type extension. */
1553
1554 static char*
1555 nml_full_name (const char* var_name, const char* cmp_name, bool parent)
1556 {
1557 int full_name_length;
1558 char * full_name;
1559
1560 full_name_length = strlen (var_name) + strlen (cmp_name) + 1;
1561 full_name = XCNEWVEC (char, full_name_length + 1);
1562 strcpy (full_name, var_name);
1563 full_name = strcat (full_name, parent ? "+" : "%");
1564 full_name = strcat (full_name, cmp_name);
1565 return full_name;
1566 }
1567
1568
1569 /* nml_get_addr_expr builds an address expression from the
1570 gfc_symbol or gfc_component backend_decl's. An offset is
1571 provided so that the address of an element of an array of
1572 derived types is returned. This is used in the runtime to
1573 determine that span of the derived type. */
1574
1575 static tree
1576 nml_get_addr_expr (gfc_symbol * sym, gfc_component * c,
1577 tree base_addr)
1578 {
1579 tree decl = NULL_TREE;
1580 tree tmp;
1581
1582 if (sym)
1583 {
1584 sym->attr.referenced = 1;
1585 decl = gfc_get_symbol_decl (sym);
1586
1587 /* If this is the enclosing function declaration, use
1588 the fake result instead. */
1589 if (decl == current_function_decl)
1590 decl = gfc_get_fake_result_decl (sym, 0);
1591 else if (decl == DECL_CONTEXT (current_function_decl))
1592 decl = gfc_get_fake_result_decl (sym, 1);
1593 }
1594 else
1595 decl = c->backend_decl;
1596
1597 gcc_assert (decl && (TREE_CODE (decl) == FIELD_DECL
1598 || VAR_P (decl)
1599 || TREE_CODE (decl) == PARM_DECL
1600 || TREE_CODE (decl) == COMPONENT_REF));
1601
1602 tmp = decl;
1603
1604 /* Build indirect reference, if dummy argument. */
1605
1606 if (POINTER_TYPE_P (TREE_TYPE(tmp)))
1607 tmp = build_fold_indirect_ref_loc (input_location, tmp);
1608
1609 /* Treat the component of a derived type, using base_addr for
1610 the derived type. */
1611
1612 if (TREE_CODE (decl) == FIELD_DECL)
1613 tmp = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (tmp),
1614 base_addr, tmp, NULL_TREE);
1615
1616 if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (tmp)))
1617 tmp = gfc_conv_array_data (tmp);
1618 else
1619 {
1620 if (!POINTER_TYPE_P (TREE_TYPE (tmp)))
1621 tmp = gfc_build_addr_expr (NULL_TREE, tmp);
1622
1623 if (TREE_CODE (TREE_TYPE (tmp)) == ARRAY_TYPE)
1624 tmp = gfc_build_array_ref (tmp, gfc_index_zero_node, NULL);
1625
1626 if (!POINTER_TYPE_P (TREE_TYPE (tmp)))
1627 tmp = build_fold_indirect_ref_loc (input_location,
1628 tmp);
1629 }
1630
1631 gcc_assert (tmp && POINTER_TYPE_P (TREE_TYPE (tmp)));
1632
1633 return tmp;
1634 }
1635
1636
1637 /* For an object VAR_NAME whose base address is BASE_ADDR, generate a
1638 call to iocall[IOCALL_SET_NML_VAL]. For derived type variable, recursively
1639 generate calls to iocall[IOCALL_SET_NML_VAL] for each component. */
1640
1641 #define IARG(i) build_int_cst (gfc_array_index_type, i)
1642
1643 static void
1644 transfer_namelist_element (stmtblock_t * block, const char * var_name,
1645 gfc_symbol * sym, gfc_component * c,
1646 tree base_addr)
1647 {
1648 gfc_typespec * ts = NULL;
1649 gfc_array_spec * as = NULL;
1650 tree addr_expr = NULL;
1651 tree dt = NULL;
1652 tree string;
1653 tree tmp;
1654 tree dtype;
1655 tree dt_parm_addr;
1656 tree decl = NULL_TREE;
1657 tree gfc_int4_type_node = gfc_get_int_type (4);
1658 tree dtio_proc = null_pointer_node;
1659 tree vtable = null_pointer_node;
1660 int n_dim;
1661 int itype;
1662 int rank = 0;
1663
1664 gcc_assert (sym || c);
1665
1666 /* Build the namelist object name. */
1667
1668 string = gfc_build_cstring_const (var_name);
1669 string = gfc_build_addr_expr (pchar_type_node, string);
1670
1671 /* Build ts, as and data address using symbol or component. */
1672
1673 ts = (sym) ? &sym->ts : &c->ts;
1674 as = (sym) ? sym->as : c->as;
1675
1676 addr_expr = nml_get_addr_expr (sym, c, base_addr);
1677
1678 if (as)
1679 rank = as->rank;
1680
1681 if (rank)
1682 {
1683 decl = (sym) ? sym->backend_decl : c->backend_decl;
1684 if (sym && sym->attr.dummy)
1685 decl = build_fold_indirect_ref_loc (input_location, decl);
1686 dt = TREE_TYPE (decl);
1687 dtype = gfc_get_dtype (dt);
1688 }
1689 else
1690 {
1691 itype = ts->type;
1692 dtype = IARG (itype << GFC_DTYPE_TYPE_SHIFT);
1693 }
1694
1695 /* Build up the arguments for the transfer call.
1696 The call for the scalar part transfers:
1697 (address, name, type, kind or string_length, dtype) */
1698
1699 dt_parm_addr = gfc_build_addr_expr (NULL_TREE, dt_parm);
1700
1701 /* Check if the derived type has a specific DTIO for the mode.
1702 Note that although namelist io is forbidden to have a format
1703 list, the specific subroutine is of the formatted kind. */
1704 if (ts->type == BT_DERIVED)
1705 {
1706 gfc_symbol *dtio_sub = NULL;
1707 gfc_symbol *vtab;
1708 dtio_sub = gfc_find_specific_dtio_proc (ts->u.derived,
1709 last_dt == WRITE,
1710 true);
1711 if (dtio_sub != NULL)
1712 {
1713 dtio_proc = gfc_get_symbol_decl (dtio_sub);
1714 dtio_proc = gfc_build_addr_expr (NULL, dtio_proc);
1715 vtab = gfc_find_derived_vtab (ts->u.derived);
1716 vtable = vtab->backend_decl;
1717 if (vtable == NULL_TREE)
1718 vtable = gfc_get_symbol_decl (vtab);
1719 vtable = gfc_build_addr_expr (pvoid_type_node, vtable);
1720 }
1721 }
1722
1723 if (ts->type == BT_CHARACTER)
1724 tmp = ts->u.cl->backend_decl;
1725 else
1726 tmp = build_int_cst (gfc_charlen_type_node, 0);
1727
1728 if (dtio_proc == NULL_TREE)
1729 tmp = build_call_expr_loc (input_location,
1730 iocall[IOCALL_SET_NML_VAL], 6,
1731 dt_parm_addr, addr_expr, string,
1732 build_int_cst (gfc_int4_type_node, ts->kind),
1733 tmp, dtype);
1734 else
1735 tmp = build_call_expr_loc (input_location,
1736 iocall[IOCALL_SET_NML_DTIO_VAL], 8,
1737 dt_parm_addr, addr_expr, string,
1738 build_int_cst (gfc_int4_type_node, ts->kind),
1739 tmp, dtype, dtio_proc, vtable);
1740 gfc_add_expr_to_block (block, tmp);
1741
1742 /* If the object is an array, transfer rank times:
1743 (null pointer, name, stride, lbound, ubound) */
1744
1745 for ( n_dim = 0 ; n_dim < rank ; n_dim++ )
1746 {
1747 tmp = build_call_expr_loc (input_location,
1748 iocall[IOCALL_SET_NML_VAL_DIM], 5,
1749 dt_parm_addr,
1750 build_int_cst (gfc_int4_type_node, n_dim),
1751 gfc_conv_array_stride (decl, n_dim),
1752 gfc_conv_array_lbound (decl, n_dim),
1753 gfc_conv_array_ubound (decl, n_dim));
1754 gfc_add_expr_to_block (block, tmp);
1755 }
1756
1757 if (gfc_bt_struct (ts->type) && ts->u.derived->components
1758 && dtio_proc == null_pointer_node)
1759 {
1760 gfc_component *cmp;
1761
1762 /* Provide the RECORD_TYPE to build component references. */
1763
1764 tree expr = build_fold_indirect_ref_loc (input_location,
1765 addr_expr);
1766
1767 for (cmp = ts->u.derived->components; cmp; cmp = cmp->next)
1768 {
1769 char *full_name = nml_full_name (var_name, cmp->name,
1770 ts->u.derived->attr.extension);
1771 transfer_namelist_element (block,
1772 full_name,
1773 NULL, cmp, expr);
1774 free (full_name);
1775 }
1776 }
1777 }
1778
1779 #undef IARG
1780
1781 /* Create a data transfer statement. Not all of the fields are valid
1782 for both reading and writing, but improper use has been filtered
1783 out by now. */
1784
1785 static tree
1786 build_dt (tree function, gfc_code * code)
1787 {
1788 stmtblock_t block, post_block, post_end_block, post_iu_block;
1789 gfc_dt *dt;
1790 tree tmp, var;
1791 gfc_expr *nmlname;
1792 gfc_namelist *nml;
1793 unsigned int mask = 0;
1794
1795 gfc_start_block (&block);
1796 gfc_init_block (&post_block);
1797 gfc_init_block (&post_end_block);
1798 gfc_init_block (&post_iu_block);
1799
1800 var = gfc_create_var (st_parameter[IOPARM_ptype_dt].type, "dt_parm");
1801
1802 set_error_locus (&block, var, &code->loc);
1803
1804 if (last_dt == IOLENGTH)
1805 {
1806 gfc_inquire *inq;
1807
1808 inq = code->ext.inquire;
1809
1810 /* First check that preconditions are met. */
1811 gcc_assert (inq != NULL);
1812 gcc_assert (inq->iolength != NULL);
1813
1814 /* Connect to the iolength variable. */
1815 mask |= set_parameter_ref (&block, &post_end_block, var,
1816 IOPARM_dt_iolength, inq->iolength);
1817 dt = NULL;
1818 }
1819 else
1820 {
1821 dt = code->ext.dt;
1822 gcc_assert (dt != NULL);
1823 }
1824
1825 if (dt && dt->io_unit)
1826 {
1827 if (dt->io_unit->ts.type == BT_CHARACTER)
1828 {
1829 mask |= set_internal_unit (&block, &post_iu_block,
1830 var, dt->io_unit);
1831 set_parameter_const (&block, var, IOPARM_common_unit,
1832 dt->io_unit->ts.kind == 1 ?
1833 GFC_INTERNAL_UNIT : GFC_INTERNAL_UNIT4);
1834 }
1835 }
1836 else
1837 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1838
1839 if (dt)
1840 {
1841 if (dt->iomsg)
1842 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1843 dt->iomsg);
1844
1845 if (dt->iostat)
1846 mask |= set_parameter_ref (&block, &post_end_block, var,
1847 IOPARM_common_iostat, dt->iostat);
1848
1849 if (dt->err)
1850 mask |= IOPARM_common_err;
1851
1852 if (dt->eor)
1853 mask |= IOPARM_common_eor;
1854
1855 if (dt->end)
1856 mask |= IOPARM_common_end;
1857
1858 if (dt->id)
1859 mask |= set_parameter_ref (&block, &post_end_block, var,
1860 IOPARM_dt_id, dt->id);
1861
1862 if (dt->pos)
1863 mask |= set_parameter_value (&block, var, IOPARM_dt_pos, dt->pos);
1864
1865 if (dt->asynchronous)
1866 mask |= set_string (&block, &post_block, var,
1867 IOPARM_dt_asynchronous, dt->asynchronous);
1868
1869 if (dt->blank)
1870 mask |= set_string (&block, &post_block, var, IOPARM_dt_blank,
1871 dt->blank);
1872
1873 if (dt->decimal)
1874 mask |= set_string (&block, &post_block, var, IOPARM_dt_decimal,
1875 dt->decimal);
1876
1877 if (dt->delim)
1878 mask |= set_string (&block, &post_block, var, IOPARM_dt_delim,
1879 dt->delim);
1880
1881 if (dt->pad)
1882 mask |= set_string (&block, &post_block, var, IOPARM_dt_pad,
1883 dt->pad);
1884
1885 if (dt->round)
1886 mask |= set_string (&block, &post_block, var, IOPARM_dt_round,
1887 dt->round);
1888
1889 if (dt->sign)
1890 mask |= set_string (&block, &post_block, var, IOPARM_dt_sign,
1891 dt->sign);
1892
1893 if (dt->rec)
1894 mask |= set_parameter_value (&block, var, IOPARM_dt_rec, dt->rec);
1895
1896 if (dt->advance)
1897 mask |= set_string (&block, &post_block, var, IOPARM_dt_advance,
1898 dt->advance);
1899
1900 if (dt->format_expr)
1901 mask |= set_string (&block, &post_end_block, var, IOPARM_dt_format,
1902 dt->format_expr);
1903
1904 if (dt->format_label)
1905 {
1906 if (dt->format_label == &format_asterisk)
1907 mask |= IOPARM_dt_list_format;
1908 else
1909 mask |= set_string (&block, &post_block, var, IOPARM_dt_format,
1910 dt->format_label->format);
1911 }
1912
1913 if (dt->size)
1914 mask |= set_parameter_ref (&block, &post_end_block, var,
1915 IOPARM_dt_size, dt->size);
1916
1917 if (dt->udtio)
1918 mask |= IOPARM_dt_dtio;
1919
1920 if (dt->default_exp)
1921 mask |= IOPARM_dt_default_exp;
1922
1923 if (dt->namelist)
1924 {
1925 if (dt->format_expr || dt->format_label)
1926 gfc_internal_error ("build_dt: format with namelist");
1927
1928 nmlname = gfc_get_character_expr (gfc_default_character_kind, NULL,
1929 dt->namelist->name,
1930 strlen (dt->namelist->name));
1931
1932 mask |= set_string (&block, &post_block, var, IOPARM_dt_namelist_name,
1933 nmlname);
1934
1935 gfc_free_expr (nmlname);
1936
1937 if (last_dt == READ)
1938 mask |= IOPARM_dt_namelist_read_mode;
1939
1940 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1941
1942 dt_parm = var;
1943
1944 for (nml = dt->namelist->namelist; nml; nml = nml->next)
1945 transfer_namelist_element (&block, nml->sym->name, nml->sym,
1946 NULL, NULL_TREE);
1947 }
1948 else
1949 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1950
1951 if (dt->io_unit && dt->io_unit->ts.type == BT_INTEGER)
1952 set_parameter_value_chk (&block, dt->iostat, var,
1953 IOPARM_common_unit, dt->io_unit);
1954 }
1955 else
1956 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1957
1958 tmp = gfc_build_addr_expr (NULL_TREE, var);
1959 tmp = build_call_expr_loc (UNKNOWN_LOCATION,
1960 function, 1, tmp);
1961 gfc_add_expr_to_block (&block, tmp);
1962
1963 gfc_add_block_to_block (&block, &post_block);
1964
1965 dt_parm = var;
1966 dt_post_end_block = &post_end_block;
1967
1968 /* Set implied do loop exit condition. */
1969 if (last_dt == READ || last_dt == WRITE)
1970 {
1971 gfc_st_parameter_field *p = &st_parameter_field[IOPARM_common_flags];
1972
1973 tmp = fold_build3_loc (input_location, COMPONENT_REF,
1974 st_parameter[IOPARM_ptype_common].type,
1975 dt_parm, TYPE_FIELDS (TREE_TYPE (dt_parm)),
1976 NULL_TREE);
1977 tmp = fold_build3_loc (input_location, COMPONENT_REF,
1978 TREE_TYPE (p->field), tmp, p->field, NULL_TREE);
1979 tmp = fold_build2_loc (input_location, BIT_AND_EXPR, TREE_TYPE (tmp),
1980 tmp, build_int_cst (TREE_TYPE (tmp),
1981 IOPARM_common_libreturn_mask));
1982 }
1983 else /* IOLENGTH */
1984 tmp = NULL_TREE;
1985
1986 gfc_add_expr_to_block (&block, gfc_trans_code_cond (code->block->next, tmp));
1987
1988 gfc_add_block_to_block (&block, &post_iu_block);
1989
1990 dt_parm = NULL;
1991 dt_post_end_block = NULL;
1992
1993 return gfc_finish_block (&block);
1994 }
1995
1996
1997 /* Translate the IOLENGTH form of an INQUIRE statement. We treat
1998 this as a third sort of data transfer statement, except that
1999 lengths are summed instead of actually transferring any data. */
2000
2001 tree
2002 gfc_trans_iolength (gfc_code * code)
2003 {
2004 last_dt = IOLENGTH;
2005 return build_dt (iocall[IOCALL_IOLENGTH], code);
2006 }
2007
2008
2009 /* Translate a READ statement. */
2010
2011 tree
2012 gfc_trans_read (gfc_code * code)
2013 {
2014 last_dt = READ;
2015 return build_dt (iocall[IOCALL_READ], code);
2016 }
2017
2018
2019 /* Translate a WRITE statement */
2020
2021 tree
2022 gfc_trans_write (gfc_code * code)
2023 {
2024 last_dt = WRITE;
2025 return build_dt (iocall[IOCALL_WRITE], code);
2026 }
2027
2028
2029 /* Finish a data transfer statement. */
2030
2031 tree
2032 gfc_trans_dt_end (gfc_code * code)
2033 {
2034 tree function, tmp;
2035 stmtblock_t block;
2036
2037 gfc_init_block (&block);
2038
2039 switch (last_dt)
2040 {
2041 case READ:
2042 function = iocall[IOCALL_READ_DONE];
2043 break;
2044
2045 case WRITE:
2046 function = iocall[IOCALL_WRITE_DONE];
2047 break;
2048
2049 case IOLENGTH:
2050 function = iocall[IOCALL_IOLENGTH_DONE];
2051 break;
2052
2053 default:
2054 gcc_unreachable ();
2055 }
2056
2057 tmp = gfc_build_addr_expr (NULL_TREE, dt_parm);
2058 tmp = build_call_expr_loc (input_location,
2059 function, 1, tmp);
2060 gfc_add_expr_to_block (&block, tmp);
2061 gfc_add_block_to_block (&block, dt_post_end_block);
2062 gfc_init_block (dt_post_end_block);
2063
2064 if (last_dt != IOLENGTH)
2065 {
2066 gcc_assert (code->ext.dt != NULL);
2067 io_result (&block, dt_parm, code->ext.dt->err,
2068 code->ext.dt->end, code->ext.dt->eor);
2069 }
2070
2071 return gfc_finish_block (&block);
2072 }
2073
2074 static void
2075 transfer_expr (gfc_se * se, gfc_typespec * ts, tree addr_expr,
2076 gfc_code * code, tree vptr);
2077
2078 /* Given an array field in a derived type variable, generate the code
2079 for the loop that iterates over array elements, and the code that
2080 accesses those array elements. Use transfer_expr to generate code
2081 for transferring that element. Because elements may also be
2082 derived types, transfer_expr and transfer_array_component are mutually
2083 recursive. */
2084
2085 static tree
2086 transfer_array_component (tree expr, gfc_component * cm, locus * where)
2087 {
2088 tree tmp;
2089 stmtblock_t body;
2090 stmtblock_t block;
2091 gfc_loopinfo loop;
2092 int n;
2093 gfc_ss *ss;
2094 gfc_se se;
2095 gfc_array_info *ss_array;
2096
2097 gfc_start_block (&block);
2098 gfc_init_se (&se, NULL);
2099
2100 /* Create and initialize Scalarization Status. Unlike in
2101 gfc_trans_transfer, we can't simply use gfc_walk_expr to take
2102 care of this task, because we don't have a gfc_expr at hand.
2103 Build one manually, as in gfc_trans_subarray_assign. */
2104
2105 ss = gfc_get_array_ss (gfc_ss_terminator, NULL, cm->as->rank,
2106 GFC_SS_COMPONENT);
2107 ss_array = &ss->info->data.array;
2108 ss_array->shape = gfc_get_shape (cm->as->rank);
2109 ss_array->descriptor = expr;
2110 ss_array->data = gfc_conv_array_data (expr);
2111 ss_array->offset = gfc_conv_array_offset (expr);
2112 for (n = 0; n < cm->as->rank; n++)
2113 {
2114 ss_array->start[n] = gfc_conv_array_lbound (expr, n);
2115 ss_array->stride[n] = gfc_index_one_node;
2116
2117 mpz_init (ss_array->shape[n]);
2118 mpz_sub (ss_array->shape[n], cm->as->upper[n]->value.integer,
2119 cm->as->lower[n]->value.integer);
2120 mpz_add_ui (ss_array->shape[n], ss_array->shape[n], 1);
2121 }
2122
2123 /* Once we got ss, we use scalarizer to create the loop. */
2124
2125 gfc_init_loopinfo (&loop);
2126 gfc_add_ss_to_loop (&loop, ss);
2127 gfc_conv_ss_startstride (&loop);
2128 gfc_conv_loop_setup (&loop, where);
2129 gfc_mark_ss_chain_used (ss, 1);
2130 gfc_start_scalarized_body (&loop, &body);
2131
2132 gfc_copy_loopinfo_to_se (&se, &loop);
2133 se.ss = ss;
2134
2135 /* gfc_conv_tmp_array_ref assumes that se.expr contains the array. */
2136 se.expr = expr;
2137 gfc_conv_tmp_array_ref (&se);
2138
2139 /* Now se.expr contains an element of the array. Take the address and pass
2140 it to the IO routines. */
2141 tmp = gfc_build_addr_expr (NULL_TREE, se.expr);
2142 transfer_expr (&se, &cm->ts, tmp, NULL, NULL_TREE);
2143
2144 /* We are done now with the loop body. Wrap up the scalarizer and
2145 return. */
2146
2147 gfc_add_block_to_block (&body, &se.pre);
2148 gfc_add_block_to_block (&body, &se.post);
2149
2150 gfc_trans_scalarizing_loops (&loop, &body);
2151
2152 gfc_add_block_to_block (&block, &loop.pre);
2153 gfc_add_block_to_block (&block, &loop.post);
2154
2155 gcc_assert (ss_array->shape != NULL);
2156 gfc_free_shape (&ss_array->shape, cm->as->rank);
2157 gfc_cleanup_loop (&loop);
2158
2159 return gfc_finish_block (&block);
2160 }
2161
2162
2163 /* Helper function for transfer_expr that looks for the DTIO procedure
2164 either as a typebound binding or in a generic interface. If present,
2165 the address expression of the procedure is returned. It is assumed
2166 that the procedure interface has been checked during resolution. */
2167
2168 static tree
2169 get_dtio_proc (gfc_typespec * ts, gfc_code * code, gfc_symbol **dtio_sub)
2170 {
2171 gfc_symbol *derived;
2172 bool formatted = false;
2173 gfc_dt *dt = code->ext.dt;
2174
2175 if (dt && dt->format_expr)
2176 {
2177 char *fmt;
2178 fmt = gfc_widechar_to_char (dt->format_expr->value.character.string,
2179 -1);
2180 if (strtok (fmt, "DT") != NULL)
2181 formatted = true;
2182 }
2183 else if (dt && dt->format_label == &format_asterisk)
2184 {
2185 /* List directed io must call the formatted DTIO procedure. */
2186 formatted = true;
2187 }
2188
2189 if (ts->type == BT_CLASS)
2190 derived = ts->u.derived->components->ts.u.derived;
2191 else
2192 derived = ts->u.derived;
2193
2194 gfc_symtree *tb_io_st = gfc_find_typebound_dtio_proc (derived,
2195 last_dt == WRITE, formatted);
2196 if (ts->type == BT_CLASS && tb_io_st)
2197 {
2198 // polymorphic DTIO call (based on the dynamic type)
2199 gfc_se se;
2200 gfc_expr *expr = gfc_find_and_cut_at_last_class_ref (code->expr1);
2201 gfc_add_vptr_component (expr);
2202 gfc_add_component_ref (expr,
2203 tb_io_st->n.tb->u.generic->specific_st->name);
2204 *dtio_sub = tb_io_st->n.tb->u.generic->specific->u.specific->n.sym;
2205 gfc_init_se (&se, NULL);
2206 se.want_pointer = 1;
2207 gfc_conv_expr (&se, expr);
2208 gfc_free_expr (expr);
2209 return se.expr;
2210 }
2211 else
2212 {
2213 // non-polymorphic DTIO call (based on the declared type)
2214 *dtio_sub = gfc_find_specific_dtio_proc (derived, last_dt == WRITE,
2215 formatted);
2216
2217 if (*dtio_sub)
2218 return gfc_build_addr_expr (NULL, gfc_get_symbol_decl (*dtio_sub));
2219 }
2220
2221 return NULL_TREE;
2222 }
2223
2224 /* Generate the call for a scalar transfer node. */
2225
2226 static void
2227 transfer_expr (gfc_se * se, gfc_typespec * ts, tree addr_expr,
2228 gfc_code * code, tree vptr)
2229 {
2230 tree tmp, function, arg2, arg3, field, expr;
2231 gfc_component *c;
2232 int kind;
2233
2234 /* It is possible to get a C_NULL_PTR or C_NULL_FUNPTR expression here if
2235 the user says something like: print *, 'c_null_ptr: ', c_null_ptr
2236 We need to translate the expression to a constant if it's either
2237 C_NULL_PTR or C_NULL_FUNPTR. We could also get a user variable of
2238 type C_PTR or C_FUNPTR, in which case the ts->type may no longer be
2239 BT_DERIVED (could have been changed by gfc_conv_expr). */
2240 if ((ts->type == BT_DERIVED || ts->type == BT_INTEGER)
2241 && ts->u.derived != NULL
2242 && (ts->is_iso_c == 1 || ts->u.derived->ts.is_iso_c == 1))
2243 {
2244 ts->type = BT_INTEGER;
2245 ts->kind = gfc_index_integer_kind;
2246 }
2247
2248 kind = ts->kind;
2249 function = NULL;
2250 arg2 = NULL;
2251 arg3 = NULL;
2252
2253 switch (ts->type)
2254 {
2255 case BT_INTEGER:
2256 arg2 = build_int_cst (integer_type_node, kind);
2257 if (last_dt == READ)
2258 function = iocall[IOCALL_X_INTEGER];
2259 else
2260 function = iocall[IOCALL_X_INTEGER_WRITE];
2261
2262 break;
2263
2264 case BT_REAL:
2265 arg2 = build_int_cst (integer_type_node, kind);
2266 if (last_dt == READ)
2267 {
2268 if (gfc_real16_is_float128 && ts->kind == 16)
2269 function = iocall[IOCALL_X_REAL128];
2270 else
2271 function = iocall[IOCALL_X_REAL];
2272 }
2273 else
2274 {
2275 if (gfc_real16_is_float128 && ts->kind == 16)
2276 function = iocall[IOCALL_X_REAL128_WRITE];
2277 else
2278 function = iocall[IOCALL_X_REAL_WRITE];
2279 }
2280
2281 break;
2282
2283 case BT_COMPLEX:
2284 arg2 = build_int_cst (integer_type_node, kind);
2285 if (last_dt == READ)
2286 {
2287 if (gfc_real16_is_float128 && ts->kind == 16)
2288 function = iocall[IOCALL_X_COMPLEX128];
2289 else
2290 function = iocall[IOCALL_X_COMPLEX];
2291 }
2292 else
2293 {
2294 if (gfc_real16_is_float128 && ts->kind == 16)
2295 function = iocall[IOCALL_X_COMPLEX128_WRITE];
2296 else
2297 function = iocall[IOCALL_X_COMPLEX_WRITE];
2298 }
2299
2300 break;
2301
2302 case BT_LOGICAL:
2303 arg2 = build_int_cst (integer_type_node, kind);
2304 if (last_dt == READ)
2305 function = iocall[IOCALL_X_LOGICAL];
2306 else
2307 function = iocall[IOCALL_X_LOGICAL_WRITE];
2308
2309 break;
2310
2311 case BT_CHARACTER:
2312 if (kind == 4)
2313 {
2314 if (se->string_length)
2315 arg2 = se->string_length;
2316 else
2317 {
2318 tmp = build_fold_indirect_ref_loc (input_location,
2319 addr_expr);
2320 gcc_assert (TREE_CODE (TREE_TYPE (tmp)) == ARRAY_TYPE);
2321 arg2 = TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (tmp)));
2322 arg2 = fold_convert (gfc_charlen_type_node, arg2);
2323 }
2324 arg3 = build_int_cst (integer_type_node, kind);
2325 if (last_dt == READ)
2326 function = iocall[IOCALL_X_CHARACTER_WIDE];
2327 else
2328 function = iocall[IOCALL_X_CHARACTER_WIDE_WRITE];
2329
2330 tmp = gfc_build_addr_expr (NULL_TREE, dt_parm);
2331 tmp = build_call_expr_loc (input_location,
2332 function, 4, tmp, addr_expr, arg2, arg3);
2333 gfc_add_expr_to_block (&se->pre, tmp);
2334 gfc_add_block_to_block (&se->pre, &se->post);
2335 return;
2336 }
2337 /* Fall through. */
2338 case BT_HOLLERITH:
2339 if (se->string_length)
2340 arg2 = se->string_length;
2341 else
2342 {
2343 tmp = build_fold_indirect_ref_loc (input_location,
2344 addr_expr);
2345 gcc_assert (TREE_CODE (TREE_TYPE (tmp)) == ARRAY_TYPE);
2346 arg2 = TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (tmp)));
2347 }
2348 if (last_dt == READ)
2349 function = iocall[IOCALL_X_CHARACTER];
2350 else
2351 function = iocall[IOCALL_X_CHARACTER_WRITE];
2352
2353 break;
2354
2355 case_bt_struct:
2356 case BT_CLASS:
2357 if (ts->u.derived->components == NULL)
2358 return;
2359 if (ts->type == BT_DERIVED || ts->type == BT_CLASS)
2360 {
2361 gfc_symbol *derived;
2362 gfc_symbol *dtio_sub = NULL;
2363 /* Test for a specific DTIO subroutine. */
2364 if (ts->type == BT_DERIVED)
2365 derived = ts->u.derived;
2366 else
2367 derived = ts->u.derived->components->ts.u.derived;
2368
2369 if (derived->attr.has_dtio_procs)
2370 arg2 = get_dtio_proc (ts, code, &dtio_sub);
2371
2372 if ((dtio_sub != NULL) && (last_dt != IOLENGTH))
2373 {
2374 tree decl;
2375 decl = build_fold_indirect_ref_loc (input_location,
2376 se->expr);
2377 /* Remember that the first dummy of the DTIO subroutines
2378 is CLASS(derived) for extensible derived types, so the
2379 conversion must be done here for derived type and for
2380 scalarized CLASS array element io-list objects. */
2381 if ((ts->type == BT_DERIVED
2382 && !(ts->u.derived->attr.sequence
2383 || ts->u.derived->attr.is_bind_c))
2384 || (ts->type == BT_CLASS
2385 && !GFC_CLASS_TYPE_P (TREE_TYPE (decl))))
2386 gfc_conv_derived_to_class (se, code->expr1,
2387 dtio_sub->formal->sym->ts,
2388 vptr, false, false);
2389 addr_expr = se->expr;
2390 function = iocall[IOCALL_X_DERIVED];
2391 break;
2392 }
2393 else if (ts->type == BT_DERIVED)
2394 {
2395 /* Recurse into the elements of the derived type. */
2396 expr = gfc_evaluate_now (addr_expr, &se->pre);
2397 expr = build_fold_indirect_ref_loc (input_location,
2398 expr);
2399
2400 /* Make sure that the derived type has been built. An external
2401 function, if only referenced in an io statement, requires this
2402 check (see PR58771). */
2403 if (ts->u.derived->backend_decl == NULL_TREE)
2404 (void) gfc_typenode_for_spec (ts);
2405
2406 for (c = ts->u.derived->components; c; c = c->next)
2407 {
2408 field = c->backend_decl;
2409 gcc_assert (field && TREE_CODE (field) == FIELD_DECL);
2410
2411 tmp = fold_build3_loc (UNKNOWN_LOCATION,
2412 COMPONENT_REF, TREE_TYPE (field),
2413 expr, field, NULL_TREE);
2414
2415 if (c->attr.dimension)
2416 {
2417 tmp = transfer_array_component (tmp, c, & code->loc);
2418 gfc_add_expr_to_block (&se->pre, tmp);
2419 }
2420 else
2421 {
2422 if (!c->attr.pointer)
2423 tmp = gfc_build_addr_expr (NULL_TREE, tmp);
2424 transfer_expr (se, &c->ts, tmp, code, NULL_TREE);
2425 }
2426 }
2427 return;
2428 }
2429 /* If a CLASS object gets through to here, fall through and ICE. */
2430 }
2431 gcc_fallthrough ();
2432 default:
2433 gfc_internal_error ("Bad IO basetype (%d)", ts->type);
2434 }
2435
2436 tmp = gfc_build_addr_expr (NULL_TREE, dt_parm);
2437 tmp = build_call_expr_loc (input_location,
2438 function, 3, tmp, addr_expr, arg2);
2439 gfc_add_expr_to_block (&se->pre, tmp);
2440 gfc_add_block_to_block (&se->pre, &se->post);
2441
2442 }
2443
2444
2445 /* Generate a call to pass an array descriptor to the IO library. The
2446 array should be of one of the intrinsic types. */
2447
2448 static void
2449 transfer_array_desc (gfc_se * se, gfc_typespec * ts, tree addr_expr)
2450 {
2451 tree tmp, charlen_arg, kind_arg, io_call;
2452
2453 if (ts->type == BT_CHARACTER)
2454 charlen_arg = se->string_length;
2455 else
2456 charlen_arg = build_int_cst (gfc_charlen_type_node, 0);
2457
2458 kind_arg = build_int_cst (integer_type_node, ts->kind);
2459
2460 tmp = gfc_build_addr_expr (NULL_TREE, dt_parm);
2461 if (last_dt == READ)
2462 io_call = iocall[IOCALL_X_ARRAY];
2463 else
2464 io_call = iocall[IOCALL_X_ARRAY_WRITE];
2465
2466 tmp = build_call_expr_loc (UNKNOWN_LOCATION,
2467 io_call, 4,
2468 tmp, addr_expr, kind_arg, charlen_arg);
2469 gfc_add_expr_to_block (&se->pre, tmp);
2470 gfc_add_block_to_block (&se->pre, &se->post);
2471 }
2472
2473
2474 /* gfc_trans_transfer()-- Translate a TRANSFER code node */
2475
2476 tree
2477 gfc_trans_transfer (gfc_code * code)
2478 {
2479 stmtblock_t block, body;
2480 gfc_loopinfo loop;
2481 gfc_expr *expr;
2482 gfc_ref *ref;
2483 gfc_ss *ss;
2484 gfc_se se;
2485 tree tmp;
2486 tree vptr;
2487 int n;
2488
2489 gfc_start_block (&block);
2490 gfc_init_block (&body);
2491
2492 expr = code->expr1;
2493 ref = NULL;
2494 gfc_init_se (&se, NULL);
2495
2496 if (expr->rank == 0)
2497 {
2498 /* Transfer a scalar value. */
2499 if (expr->ts.type == BT_CLASS)
2500 {
2501 se.want_pointer = 1;
2502 gfc_conv_expr (&se, expr);
2503 vptr = gfc_get_vptr_from_expr (se.expr);
2504 }
2505 else
2506 {
2507 vptr = NULL_TREE;
2508 gfc_conv_expr_reference (&se, expr);
2509 }
2510 transfer_expr (&se, &expr->ts, se.expr, code, vptr);
2511 }
2512 else
2513 {
2514 /* Transfer an array. If it is an array of an intrinsic
2515 type, pass the descriptor to the library. Otherwise
2516 scalarize the transfer. */
2517 if (expr->ref && !gfc_is_proc_ptr_comp (expr))
2518 {
2519 for (ref = expr->ref; ref && ref->type != REF_ARRAY;
2520 ref = ref->next);
2521 gcc_assert (ref && ref->type == REF_ARRAY);
2522 }
2523
2524 if (!(gfc_bt_struct (expr->ts.type)
2525 || expr->ts.type == BT_CLASS)
2526 && ref && ref->next == NULL
2527 && !is_subref_array (expr))
2528 {
2529 bool seen_vector = false;
2530
2531 if (ref && ref->u.ar.type == AR_SECTION)
2532 {
2533 for (n = 0; n < ref->u.ar.dimen; n++)
2534 if (ref->u.ar.dimen_type[n] == DIMEN_VECTOR)
2535 {
2536 seen_vector = true;
2537 break;
2538 }
2539 }
2540
2541 if (seen_vector && last_dt == READ)
2542 {
2543 /* Create a temp, read to that and copy it back. */
2544 gfc_conv_subref_array_arg (&se, expr, 0, INTENT_OUT, false);
2545 tmp = se.expr;
2546 }
2547 else
2548 {
2549 /* Get the descriptor. */
2550 gfc_conv_expr_descriptor (&se, expr);
2551 tmp = gfc_build_addr_expr (NULL_TREE, se.expr);
2552 }
2553
2554 transfer_array_desc (&se, &expr->ts, tmp);
2555 goto finish_block_label;
2556 }
2557
2558 /* Initialize the scalarizer. */
2559 ss = gfc_walk_expr (expr);
2560 gfc_init_loopinfo (&loop);
2561 gfc_add_ss_to_loop (&loop, ss);
2562
2563 /* Initialize the loop. */
2564 gfc_conv_ss_startstride (&loop);
2565 gfc_conv_loop_setup (&loop, &code->expr1->where);
2566
2567 /* The main loop body. */
2568 gfc_mark_ss_chain_used (ss, 1);
2569 gfc_start_scalarized_body (&loop, &body);
2570
2571 gfc_copy_loopinfo_to_se (&se, &loop);
2572 se.ss = ss;
2573 gfc_conv_expr_reference (&se, expr);
2574 if (expr->ts.type == BT_CLASS)
2575 vptr = gfc_get_vptr_from_expr (ss->info->data.array.descriptor);
2576 else
2577 vptr = NULL_TREE;
2578 transfer_expr (&se, &expr->ts, se.expr, code, vptr);
2579 }
2580
2581 finish_block_label:
2582
2583 gfc_add_block_to_block (&body, &se.pre);
2584 gfc_add_block_to_block (&body, &se.post);
2585
2586 if (se.ss == NULL)
2587 tmp = gfc_finish_block (&body);
2588 else
2589 {
2590 gcc_assert (expr->rank != 0);
2591 gcc_assert (se.ss == gfc_ss_terminator);
2592 gfc_trans_scalarizing_loops (&loop, &body);
2593
2594 gfc_add_block_to_block (&loop.pre, &loop.post);
2595 tmp = gfc_finish_block (&loop.pre);
2596 gfc_cleanup_loop (&loop);
2597 }
2598
2599 gfc_add_expr_to_block (&block, tmp);
2600
2601 return gfc_finish_block (&block);
2602 }
2603
2604 #include "gt-fortran-trans-io.h"