Mercurial > hg > CbC > CbC_gcc
comparison gcc/fortran/trans.h @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
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children | 84e7813d76e9 |
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1 /* Header for code translation functions | |
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 #ifndef GFC_TRANS_H | |
22 #define GFC_TRANS_H | |
23 | |
24 #include "predict.h" /* For enum br_predictor and PRED_*. */ | |
25 | |
26 /* Mangled symbols take the form __module__name. */ | |
27 #define GFC_MAX_MANGLED_SYMBOL_LEN (GFC_MAX_SYMBOL_LEN*2+4) | |
28 | |
29 /* Struct for holding a block of statements. It should be treated as an | |
30 opaque entity and not modified directly. This allows us to change the | |
31 underlying representation of statement lists. */ | |
32 typedef struct | |
33 { | |
34 tree head; | |
35 unsigned int has_scope:1; | |
36 } | |
37 stmtblock_t; | |
38 | |
39 /* a simplified expression */ | |
40 typedef struct gfc_se | |
41 { | |
42 /* Code blocks to be executed before and after using the value. */ | |
43 stmtblock_t pre; | |
44 stmtblock_t post; | |
45 | |
46 /* the result of the expression */ | |
47 tree expr; | |
48 | |
49 /* The length of a character string value. */ | |
50 tree string_length; | |
51 | |
52 /* When expr is a reference to a class object, store its vptr access | |
53 here. */ | |
54 tree class_vptr; | |
55 | |
56 /* If set gfc_conv_variable will return an expression for the array | |
57 descriptor. When set, want_pointer should also be set. | |
58 If not set scalarizing variables will be substituted. */ | |
59 unsigned descriptor_only:1; | |
60 | |
61 /* When this is set gfc_conv_expr returns the address of a variable. Only | |
62 applies to EXPR_VARIABLE nodes. | |
63 Also used by gfc_conv_array_parameter. When set this indicates a pointer | |
64 to the descriptor should be returned, rather than the descriptor itself. | |
65 */ | |
66 unsigned want_pointer:1; | |
67 | |
68 /* An array function call returning without a temporary. Also used for array | |
69 pointer assignments. */ | |
70 unsigned direct_byref:1; | |
71 | |
72 /* If direct_byref is set, do work out the descriptor as in that case but | |
73 do still create a new descriptor variable instead of using an | |
74 existing one. This is useful for special pointer assignments like | |
75 rank remapping where we have to process the descriptor before | |
76 assigning to final one. */ | |
77 unsigned byref_noassign:1; | |
78 | |
79 /* Ignore absent optional arguments. Used for some intrinsics. */ | |
80 unsigned ignore_optional:1; | |
81 | |
82 /* When this is set the data and offset fields of the returned descriptor | |
83 are NULL. Used by intrinsic size. */ | |
84 unsigned data_not_needed:1; | |
85 | |
86 /* If set, gfc_conv_procedure_call does not put byref calls into se->pre. */ | |
87 unsigned no_function_call:1; | |
88 | |
89 /* If set, we will force the creation of a temporary. Useful to disable | |
90 non-copying procedure argument passing optimizations, when some function | |
91 args alias. */ | |
92 unsigned force_tmp:1; | |
93 | |
94 /* Unconditionally calculate offset for array segments and constant | |
95 arrays in gfc_conv_expr_descriptor. */ | |
96 unsigned use_offset:1; | |
97 | |
98 unsigned want_coarray:1; | |
99 | |
100 /* Scalarization parameters. */ | |
101 struct gfc_se *parent; | |
102 struct gfc_ss *ss; | |
103 struct gfc_loopinfo *loop; | |
104 } | |
105 gfc_se; | |
106 | |
107 | |
108 /* Denotes different types of coarray. | |
109 Please keep in sync with libgfortran/caf/libcaf.h. */ | |
110 enum gfc_coarray_regtype | |
111 { | |
112 GFC_CAF_COARRAY_STATIC, | |
113 GFC_CAF_COARRAY_ALLOC, | |
114 GFC_CAF_LOCK_STATIC, | |
115 GFC_CAF_LOCK_ALLOC, | |
116 GFC_CAF_CRITICAL, | |
117 GFC_CAF_EVENT_STATIC, | |
118 GFC_CAF_EVENT_ALLOC, | |
119 GFC_CAF_COARRAY_ALLOC_REGISTER_ONLY, | |
120 GFC_CAF_COARRAY_ALLOC_ALLOCATE_ONLY | |
121 }; | |
122 | |
123 | |
124 /* Describes the action to take on _caf_deregister. Keep in sync with | |
125 gcc/fortran/trans.h. The negative values are not valid for the library and | |
126 are used by the drivers for building the correct call. */ | |
127 enum gfc_coarray_deregtype { | |
128 /* This is no coarray, i.e. build a call to a free (). */ | |
129 GFC_CAF_COARRAY_NOCOARRAY = -2, | |
130 /* The driver is to analyze which _caf_deregister ()-call to generate. */ | |
131 GFC_CAF_COARRAY_ANALYZE = -1, | |
132 GFC_CAF_COARRAY_DEREGISTER = 0, | |
133 GFC_CAF_COARRAY_DEALLOCATE_ONLY | |
134 }; | |
135 | |
136 | |
137 /* Specify the type of ref handed to the caf communication functions. | |
138 Please keep in sync with libgfortran/caf/libcaf.h. */ | |
139 enum gfc_caf_ref_type_t { | |
140 GFC_CAF_REF_COMPONENT, | |
141 GFC_CAF_REF_ARRAY, | |
142 GFC_CAF_REF_STATIC_ARRAY | |
143 }; | |
144 | |
145 | |
146 /* Give the reference type of an array ref. | |
147 Please keep in sync with libgfortran/caf/libcaf.h. */ | |
148 enum gfc_caf_array_ref_t { | |
149 GFC_CAF_ARR_REF_NONE = 0, | |
150 GFC_CAF_ARR_REF_VECTOR, | |
151 GFC_CAF_ARR_REF_FULL, | |
152 GFC_CAF_ARR_REF_RANGE, | |
153 GFC_CAF_ARR_REF_SINGLE, | |
154 GFC_CAF_ARR_REF_OPEN_END, | |
155 GFC_CAF_ARR_REF_OPEN_START | |
156 }; | |
157 | |
158 | |
159 /* trans-array (structure_alloc_comps) caf_mode bits. */ | |
160 enum gfc_structure_caf_mode_t { | |
161 GFC_STRUCTURE_CAF_MODE_ENABLE_COARRAY = 1 << 0, | |
162 GFC_STRUCTURE_CAF_MODE_IN_COARRAY = 1 << 1, | |
163 GFC_STRUCTURE_CAF_MODE_DEALLOC_ONLY = 1 << 2 | |
164 }; | |
165 | |
166 | |
167 /* The array-specific scalarization information. The array members of | |
168 this struct are indexed by actual array index, and thus can be sparse. */ | |
169 | |
170 typedef struct gfc_array_info | |
171 { | |
172 mpz_t *shape; | |
173 | |
174 /* The ref that holds information on this section. */ | |
175 gfc_ref *ref; | |
176 /* The descriptor of this array. */ | |
177 tree descriptor; | |
178 /* holds the pointer to the data array. */ | |
179 tree data; | |
180 /* To move some of the array index calculation out of the innermost loop. */ | |
181 tree offset; | |
182 tree saved_offset; | |
183 tree stride0; | |
184 /* Holds the SS for a subscript. Indexed by actual dimension. */ | |
185 struct gfc_ss *subscript[GFC_MAX_DIMENSIONS]; | |
186 | |
187 /* stride and delta are used to access this inside a scalarization loop. | |
188 start is used in the calculation of these. Indexed by scalarizer | |
189 dimension. */ | |
190 tree start[GFC_MAX_DIMENSIONS]; | |
191 tree end[GFC_MAX_DIMENSIONS]; | |
192 tree stride[GFC_MAX_DIMENSIONS]; | |
193 tree delta[GFC_MAX_DIMENSIONS]; | |
194 } | |
195 gfc_array_info; | |
196 | |
197 enum gfc_ss_type | |
198 { | |
199 /* A scalar value. This will be evaluated before entering the | |
200 scalarization loop. */ | |
201 GFC_SS_SCALAR, | |
202 | |
203 /* Like GFC_SS_SCALAR it evaluates the expression outside the | |
204 loop. Is always evaluated as a reference to the temporary, unless | |
205 temporary evaluation can result in a NULL pointer dereferencing (case of | |
206 optional arguments). Used for elemental function arguments. */ | |
207 GFC_SS_REFERENCE, | |
208 | |
209 /* An array section. Scalarization indices will be substituted during | |
210 expression translation. */ | |
211 GFC_SS_SECTION, | |
212 | |
213 /* A non-elemental function call returning an array. The call is executed | |
214 before entering the scalarization loop, storing the result in a | |
215 temporary. This temporary is then used inside the scalarization loop. | |
216 Simple assignments, e.g. a(:) = fn(), are handled without a temporary | |
217 as a special case. */ | |
218 GFC_SS_FUNCTION, | |
219 | |
220 /* An array constructor. The current implementation is sub-optimal in | |
221 many cases. It allocated a temporary, assigns the values to it, then | |
222 uses this temporary inside the scalarization loop. */ | |
223 GFC_SS_CONSTRUCTOR, | |
224 | |
225 /* A vector subscript. The vector's descriptor is cached in the | |
226 "descriptor" field of the associated gfc_ss_info. */ | |
227 GFC_SS_VECTOR, | |
228 | |
229 /* A temporary array allocated by the scalarizer. Its rank can be less | |
230 than that of the assignment expression. */ | |
231 GFC_SS_TEMP, | |
232 | |
233 /* An intrinsic function call. Many intrinsic functions which map directly | |
234 to library calls are created as GFC_SS_FUNCTION nodes. */ | |
235 GFC_SS_INTRINSIC, | |
236 | |
237 /* A component of a derived type. */ | |
238 GFC_SS_COMPONENT | |
239 }; | |
240 | |
241 | |
242 typedef struct gfc_ss_info | |
243 { | |
244 int refcount; | |
245 gfc_ss_type type; | |
246 gfc_expr *expr; | |
247 tree string_length; | |
248 | |
249 union | |
250 { | |
251 /* If type is GFC_SS_SCALAR or GFC_SS_REFERENCE. */ | |
252 struct | |
253 { | |
254 /* If the scalar is passed as actual argument to an (elemental) procedure, | |
255 this is the symbol of the corresponding dummy argument. */ | |
256 gfc_symbol *dummy_arg; | |
257 tree value; | |
258 /* Tells that the scalar is a reference to a variable that might | |
259 be present on the lhs, so that we should evaluate the value | |
260 itself before the loop, not just the reference. */ | |
261 unsigned needs_temporary:1; | |
262 } | |
263 scalar; | |
264 | |
265 /* GFC_SS_TEMP. */ | |
266 struct | |
267 { | |
268 tree type; | |
269 } | |
270 temp; | |
271 | |
272 /* All other types. */ | |
273 gfc_array_info array; | |
274 } | |
275 data; | |
276 | |
277 /* This is used by assignments requiring temporaries. The bits specify which | |
278 loops the terms appear in. This will be 1 for the RHS expressions, | |
279 2 for the LHS expressions, and 3(=1|2) for the temporary. */ | |
280 unsigned useflags:2; | |
281 | |
282 /* Suppresses precalculation of scalars in WHERE assignments. */ | |
283 unsigned where:1; | |
284 | |
285 /* This set for an elemental function that contains expressions for | |
286 external arrays, thereby triggering creation of a temporary. */ | |
287 unsigned array_outer_dependency:1; | |
288 | |
289 /* Tells whether the SS is for an actual argument which can be a NULL | |
290 reference. In other words, the associated dummy argument is OPTIONAL. | |
291 Used to handle elemental procedures. */ | |
292 bool can_be_null_ref; | |
293 } | |
294 gfc_ss_info; | |
295 | |
296 #define gfc_get_ss_info() XCNEW (gfc_ss_info) | |
297 | |
298 | |
299 /* Scalarization State chain. Created by walking an expression tree before | |
300 creating the scalarization loops. Then passed as part of a gfc_se structure | |
301 to translate the expression inside the loop. Note that these chains are | |
302 terminated by gfc_ss_terminator, not NULL. A NULL pointer in a gfc_se | |
303 indicates to gfc_conv_* that this is a scalar expression. | |
304 SS structures can only belong to a single loopinfo. They must be added | |
305 otherwise they will not get freed. */ | |
306 | |
307 typedef struct gfc_ss | |
308 { | |
309 gfc_ss_info *info; | |
310 | |
311 int dimen; | |
312 /* Translation from loop dimensions to actual array dimensions. | |
313 actual_dim = dim[loop_dim] */ | |
314 int dim[GFC_MAX_DIMENSIONS]; | |
315 | |
316 /* All the SS in a loop and linked through loop_chain. The SS for an | |
317 expression are linked by the next pointer. */ | |
318 struct gfc_ss *loop_chain; | |
319 struct gfc_ss *next; | |
320 | |
321 /* Non-null if the ss is part of a nested loop. */ | |
322 struct gfc_ss *parent; | |
323 | |
324 /* If the evaluation of an expression requires a nested loop (for example | |
325 if the sum intrinsic is evaluated inline), this points to the nested | |
326 loop's gfc_ss. */ | |
327 struct gfc_ss *nested_ss; | |
328 | |
329 /* The loop this gfc_ss is in. */ | |
330 struct gfc_loopinfo *loop; | |
331 | |
332 unsigned is_alloc_lhs:1; | |
333 } | |
334 gfc_ss; | |
335 #define gfc_get_ss() XCNEW (gfc_ss) | |
336 | |
337 /* The contents of this aren't actually used. A NULL SS chain indicates a | |
338 scalar expression, so this pointer is used to terminate SS chains. */ | |
339 extern gfc_ss * const gfc_ss_terminator; | |
340 | |
341 /* Holds information about an expression while it is being scalarized. */ | |
342 typedef struct gfc_loopinfo | |
343 { | |
344 stmtblock_t pre; | |
345 stmtblock_t post; | |
346 | |
347 int dimen; | |
348 | |
349 /* All the SS involved with this loop. */ | |
350 gfc_ss *ss; | |
351 /* The SS describing the temporary used in an assignment. */ | |
352 gfc_ss *temp_ss; | |
353 | |
354 /* Non-null if this loop is nested in another one. */ | |
355 struct gfc_loopinfo *parent; | |
356 | |
357 /* Chain of nested loops. */ | |
358 struct gfc_loopinfo *nested, *next; | |
359 | |
360 /* The scalarization loop index variables. */ | |
361 tree loopvar[GFC_MAX_DIMENSIONS]; | |
362 | |
363 /* The bounds of the scalarization loops. */ | |
364 tree from[GFC_MAX_DIMENSIONS]; | |
365 tree to[GFC_MAX_DIMENSIONS]; | |
366 gfc_ss *specloop[GFC_MAX_DIMENSIONS]; | |
367 | |
368 /* The code member contains the code for the body of the next outer loop. */ | |
369 stmtblock_t code[GFC_MAX_DIMENSIONS]; | |
370 | |
371 /* Order in which the dimensions should be looped, innermost first. */ | |
372 int order[GFC_MAX_DIMENSIONS]; | |
373 | |
374 /* Enum to control loop reversal. */ | |
375 gfc_reverse reverse[GFC_MAX_DIMENSIONS]; | |
376 | |
377 /* The number of dimensions for which a temporary is used. */ | |
378 int temp_dim; | |
379 | |
380 /* If set we don't need the loop variables. */ | |
381 unsigned array_parameter:1; | |
382 } | |
383 gfc_loopinfo; | |
384 | |
385 #define gfc_get_loopinfo() XCNEW (gfc_loopinfo) | |
386 | |
387 /* Information about a symbol that has been shadowed by a temporary. */ | |
388 typedef struct | |
389 { | |
390 symbol_attribute attr; | |
391 tree decl; | |
392 } | |
393 gfc_saved_var; | |
394 | |
395 | |
396 /* Store information about a block of code together with special | |
397 initialization and clean-up code. This can be used to incrementally add | |
398 init and cleanup, and in the end put everything together to a | |
399 try-finally expression. */ | |
400 typedef struct | |
401 { | |
402 tree init; | |
403 tree cleanup; | |
404 tree code; | |
405 } | |
406 gfc_wrapped_block; | |
407 | |
408 /* Class API functions. */ | |
409 tree gfc_class_set_static_fields (tree, tree, tree); | |
410 tree gfc_class_data_get (tree); | |
411 tree gfc_class_vptr_get (tree); | |
412 tree gfc_class_len_get (tree); | |
413 tree gfc_class_len_or_zero_get (tree); | |
414 gfc_expr * gfc_find_and_cut_at_last_class_ref (gfc_expr *); | |
415 /* Get an accessor to the class' vtab's * field, when a class handle is | |
416 available. */ | |
417 tree gfc_class_vtab_hash_get (tree); | |
418 tree gfc_class_vtab_size_get (tree); | |
419 tree gfc_class_vtab_extends_get (tree); | |
420 tree gfc_class_vtab_def_init_get (tree); | |
421 tree gfc_class_vtab_copy_get (tree); | |
422 tree gfc_class_vtab_final_get (tree); | |
423 /* Get an accessor to the vtab's * field, when a vptr handle is present. */ | |
424 tree gfc_vtpr_hash_get (tree); | |
425 tree gfc_vptr_size_get (tree); | |
426 tree gfc_vptr_extends_get (tree); | |
427 tree gfc_vptr_def_init_get (tree); | |
428 tree gfc_vptr_copy_get (tree); | |
429 tree gfc_vptr_final_get (tree); | |
430 tree gfc_vptr_deallocate_get (tree); | |
431 void gfc_reset_vptr (stmtblock_t *, gfc_expr *); | |
432 void gfc_reset_len (stmtblock_t *, gfc_expr *); | |
433 tree gfc_get_vptr_from_expr (tree); | |
434 tree gfc_get_class_array_ref (tree, tree, tree); | |
435 tree gfc_copy_class_to_class (tree, tree, tree, bool); | |
436 bool gfc_add_finalizer_call (stmtblock_t *, gfc_expr *); | |
437 bool gfc_add_comp_finalizer_call (stmtblock_t *, tree, gfc_component *, bool); | |
438 | |
439 void gfc_conv_derived_to_class (gfc_se *, gfc_expr *, gfc_typespec, tree, bool, | |
440 bool); | |
441 void gfc_conv_class_to_class (gfc_se *, gfc_expr *, gfc_typespec, bool, bool, | |
442 bool, bool); | |
443 | |
444 /* Initialize an init/cleanup block. */ | |
445 void gfc_start_wrapped_block (gfc_wrapped_block* block, tree code); | |
446 /* Add a pair of init/cleanup code to the block. Each one might be a | |
447 NULL_TREE if not required. */ | |
448 void gfc_add_init_cleanup (gfc_wrapped_block* block, tree init, tree cleanup); | |
449 /* Finalize the block, that is, create a single expression encapsulating the | |
450 original code together with init and clean-up code. */ | |
451 tree gfc_finish_wrapped_block (gfc_wrapped_block* block); | |
452 | |
453 | |
454 /* Advance the SS chain to the next term. */ | |
455 void gfc_advance_se_ss_chain (gfc_se *); | |
456 | |
457 /* Call this to initialize a gfc_se structure before use | |
458 first parameter is structure to initialize, second is | |
459 parent to get scalarization data from, or NULL. */ | |
460 void gfc_init_se (gfc_se *, gfc_se *); | |
461 | |
462 /* Create an artificial variable decl and add it to the current scope. */ | |
463 tree gfc_create_var (tree, const char *); | |
464 /* Like above but doesn't add it to the current scope. */ | |
465 tree gfc_create_var_np (tree, const char *); | |
466 | |
467 /* Store the result of an expression in a temp variable so it can be used | |
468 repeatedly even if the original changes */ | |
469 void gfc_make_safe_expr (gfc_se * se); | |
470 | |
471 /* Makes sure se is suitable for passing as a function string parameter. */ | |
472 void gfc_conv_string_parameter (gfc_se * se); | |
473 | |
474 /* Compare two strings. */ | |
475 tree gfc_build_compare_string (tree, tree, tree, tree, int, enum tree_code); | |
476 | |
477 /* When using the gfc_conv_* make sure you understand what they do, i.e. | |
478 when a POST chain may be created, and what the returned expression may be | |
479 used for. Note that character strings have special handling. This | |
480 should not be a problem as most statements/operations only deal with | |
481 numeric/logical types. See the implementations in trans-expr.c | |
482 for details of the individual functions. */ | |
483 | |
484 void gfc_conv_expr (gfc_se * se, gfc_expr * expr); | |
485 void gfc_conv_expr_val (gfc_se * se, gfc_expr * expr); | |
486 void gfc_conv_expr_lhs (gfc_se * se, gfc_expr * expr); | |
487 void gfc_conv_expr_reference (gfc_se * se, gfc_expr *); | |
488 void gfc_conv_expr_type (gfc_se * se, gfc_expr *, tree); | |
489 | |
490 | |
491 /* trans-expr.c */ | |
492 tree gfc_conv_scalar_to_descriptor (gfc_se *, tree, symbol_attribute); | |
493 tree gfc_get_ultimate_alloc_ptr_comps_caf_token (gfc_se *, gfc_expr *); | |
494 void gfc_conv_scalar_char_value (gfc_symbol *sym, gfc_se *se, gfc_expr **expr); | |
495 tree gfc_string_to_single_character (tree len, tree str, int kind); | |
496 tree gfc_get_tree_for_caf_expr (gfc_expr *); | |
497 void gfc_get_caf_token_offset (gfc_se*, tree *, tree *, tree, tree, gfc_expr *); | |
498 tree gfc_caf_get_image_index (stmtblock_t *, gfc_expr *, tree); | |
499 | |
500 /* Find the decl containing the auxiliary variables for assigned variables. */ | |
501 void gfc_conv_label_variable (gfc_se * se, gfc_expr * expr); | |
502 /* If the value is not constant, Create a temporary and copy the value. */ | |
503 tree gfc_evaluate_now_loc (location_t, tree, stmtblock_t *); | |
504 tree gfc_evaluate_now (tree, stmtblock_t *); | |
505 | |
506 /* Find the appropriate variant of a math intrinsic. */ | |
507 tree gfc_builtin_decl_for_float_kind (enum built_in_function, int); | |
508 | |
509 tree size_of_string_in_bytes (int, tree); | |
510 | |
511 /* Intrinsic procedure handling. */ | |
512 tree gfc_conv_intrinsic_subroutine (gfc_code *); | |
513 void gfc_conv_intrinsic_function (gfc_se *, gfc_expr *); | |
514 bool gfc_conv_ieee_arithmetic_function (gfc_se *, gfc_expr *); | |
515 tree gfc_save_fp_state (stmtblock_t *); | |
516 void gfc_restore_fp_state (stmtblock_t *, tree); | |
517 | |
518 bool gfc_expr_is_variable (gfc_expr *); | |
519 | |
520 /* Does an intrinsic map directly to an external library call | |
521 This is true for array-returning intrinsics, unless | |
522 gfc_inline_intrinsic_function_p returns true. */ | |
523 int gfc_is_intrinsic_libcall (gfc_expr *); | |
524 | |
525 /* Used to call ordinary functions/subroutines | |
526 and procedure pointer components. */ | |
527 int gfc_conv_procedure_call (gfc_se *, gfc_symbol *, gfc_actual_arglist *, | |
528 gfc_expr *, vec<tree, va_gc> *); | |
529 | |
530 void gfc_conv_subref_array_arg (gfc_se *, gfc_expr *, int, sym_intent, bool); | |
531 | |
532 /* Generate code for a scalar assignment. */ | |
533 tree gfc_trans_scalar_assign (gfc_se *, gfc_se *, gfc_typespec, bool, bool, | |
534 bool c = false); | |
535 | |
536 /* Translate COMMON blocks. */ | |
537 void gfc_trans_common (gfc_namespace *); | |
538 | |
539 /* Translate a derived type constructor. */ | |
540 void gfc_conv_structure (gfc_se *, gfc_expr *, int); | |
541 | |
542 /* Return an expression which determines if a dummy parameter is present. */ | |
543 tree gfc_conv_expr_present (gfc_symbol *); | |
544 /* Convert a missing, dummy argument into a null or zero. */ | |
545 void gfc_conv_missing_dummy (gfc_se *, gfc_expr *, gfc_typespec, int); | |
546 | |
547 /* Generate code to allocate a string temporary. */ | |
548 tree gfc_conv_string_tmp (gfc_se *, tree, tree); | |
549 /* Get the string length variable belonging to an expression. */ | |
550 tree gfc_get_expr_charlen (gfc_expr *); | |
551 /* Initialize a string length variable. */ | |
552 void gfc_conv_string_length (gfc_charlen *, gfc_expr *, stmtblock_t *); | |
553 /* Ensure type sizes can be gimplified. */ | |
554 void gfc_trans_vla_type_sizes (gfc_symbol *, stmtblock_t *); | |
555 | |
556 /* Add an expression to the end of a block. */ | |
557 void gfc_add_expr_to_block (stmtblock_t *, tree); | |
558 /* Add an expression to the beginning of a block. */ | |
559 void gfc_prepend_expr_to_block (stmtblock_t *, tree); | |
560 /* Add a block to the end of a block. */ | |
561 void gfc_add_block_to_block (stmtblock_t *, stmtblock_t *); | |
562 /* Add a MODIFY_EXPR to a block. */ | |
563 void gfc_add_modify_loc (location_t, stmtblock_t *, tree, tree); | |
564 void gfc_add_modify (stmtblock_t *, tree, tree); | |
565 | |
566 /* Initialize a statement block. */ | |
567 void gfc_init_block (stmtblock_t *); | |
568 /* Start a new statement block. Like gfc_init_block but also starts a new | |
569 variable scope. */ | |
570 void gfc_start_block (stmtblock_t *); | |
571 /* Finish a statement block. Also closes the scope if the block was created | |
572 with gfc_start_block. */ | |
573 tree gfc_finish_block (stmtblock_t *); | |
574 /* Merge the scope of a block with its parent. */ | |
575 void gfc_merge_block_scope (stmtblock_t * block); | |
576 | |
577 /* Return the backend label decl. */ | |
578 tree gfc_get_label_decl (gfc_st_label *); | |
579 | |
580 /* Return the decl for an external function. */ | |
581 tree gfc_get_extern_function_decl (gfc_symbol *); | |
582 | |
583 /* Return the decl for a function. */ | |
584 tree gfc_get_function_decl (gfc_symbol *); | |
585 | |
586 /* Build an ADDR_EXPR. */ | |
587 tree gfc_build_addr_expr (tree, tree); | |
588 | |
589 /* Build an ARRAY_REF. */ | |
590 tree gfc_build_array_ref (tree, tree, tree, tree vptr = NULL_TREE); | |
591 | |
592 /* Creates a label. Decl is artificial if label_id == NULL_TREE. */ | |
593 tree gfc_build_label_decl (tree); | |
594 | |
595 /* Return the decl used to hold the function return value. | |
596 Do not use if the function has an explicit result variable. */ | |
597 tree gfc_get_fake_result_decl (gfc_symbol *, int); | |
598 | |
599 /* Add a decl to the binding level for the current function. */ | |
600 void gfc_add_decl_to_function (tree); | |
601 | |
602 /* Make prototypes for runtime library functions. */ | |
603 void gfc_build_builtin_function_decls (void); | |
604 | |
605 /* Set the backend source location of a decl. */ | |
606 void gfc_set_decl_location (tree, locus *); | |
607 | |
608 /* Get a module symbol backend_decl if possible. */ | |
609 bool gfc_get_module_backend_decl (gfc_symbol *); | |
610 | |
611 /* Return the variable decl for a symbol. */ | |
612 tree gfc_get_symbol_decl (gfc_symbol *); | |
613 | |
614 /* Build a static initializer. */ | |
615 tree gfc_conv_initializer (gfc_expr *, gfc_typespec *, tree, bool, bool, bool); | |
616 | |
617 /* Assign a default initializer to a derived type. */ | |
618 void gfc_init_default_dt (gfc_symbol *, stmtblock_t *, bool); | |
619 | |
620 /* Substitute a temporary variable in place of the real one. */ | |
621 void gfc_shadow_sym (gfc_symbol *, tree, gfc_saved_var *); | |
622 | |
623 /* Restore the original variable. */ | |
624 void gfc_restore_sym (gfc_symbol *, gfc_saved_var *); | |
625 | |
626 /* Setting a decl assembler name, mangling it according to target rules | |
627 (like Windows @NN decorations). */ | |
628 void gfc_set_decl_assembler_name (tree, tree); | |
629 | |
630 /* Returns true if a variable of specified size should go on the stack. */ | |
631 int gfc_can_put_var_on_stack (tree); | |
632 | |
633 /* Set GFC_DECL_SCALAR_* on decl from sym if needed. */ | |
634 void gfc_finish_decl_attrs (tree, symbol_attribute *); | |
635 | |
636 /* Allocate the lang-specific part of a decl node. */ | |
637 void gfc_allocate_lang_decl (tree); | |
638 | |
639 /* Advance along a TREE_CHAIN. */ | |
640 tree gfc_advance_chain (tree, int); | |
641 | |
642 /* Create a decl for a function. */ | |
643 void gfc_create_function_decl (gfc_namespace *, bool); | |
644 /* Generate the code for a function. */ | |
645 void gfc_generate_function_code (gfc_namespace *); | |
646 /* Output a BLOCK DATA program unit. */ | |
647 void gfc_generate_block_data (gfc_namespace *); | |
648 /* Output a decl for a module variable. */ | |
649 void gfc_generate_module_vars (gfc_namespace *); | |
650 /* Get the appropriate return statement for a procedure. */ | |
651 tree gfc_generate_return (void); | |
652 | |
653 struct module_decl_hasher : ggc_ptr_hash<tree_node> | |
654 { | |
655 typedef const char *compare_type; | |
656 | |
657 static hashval_t hash (tree); | |
658 static bool equal (tree, const char *); | |
659 }; | |
660 | |
661 struct GTY((for_user)) module_htab_entry { | |
662 const char *name; | |
663 tree namespace_decl; | |
664 hash_table<module_decl_hasher> *GTY (()) decls; | |
665 }; | |
666 | |
667 struct module_htab_entry *gfc_find_module (const char *); | |
668 void gfc_module_add_decl (struct module_htab_entry *, tree); | |
669 | |
670 /* Get and set the current location. */ | |
671 void gfc_save_backend_locus (locus *); | |
672 void gfc_set_backend_locus (locus *); | |
673 void gfc_restore_backend_locus (locus *); | |
674 | |
675 /* Handle static constructor functions. */ | |
676 extern GTY(()) tree gfc_static_ctors; | |
677 void gfc_generate_constructors (void); | |
678 | |
679 /* Get the string length of an array constructor. */ | |
680 bool get_array_ctor_strlen (stmtblock_t *, gfc_constructor_base, tree *); | |
681 | |
682 /* Mark a condition as likely or unlikely. */ | |
683 tree gfc_likely (tree, enum br_predictor); | |
684 tree gfc_unlikely (tree, enum br_predictor); | |
685 | |
686 /* Return the string length of a deferred character length component. */ | |
687 bool gfc_deferred_strlen (gfc_component *, tree *); | |
688 | |
689 /* Generate a runtime error call. */ | |
690 tree gfc_trans_runtime_error (bool, locus*, const char*, ...); | |
691 | |
692 /* Generate a runtime warning/error check. */ | |
693 void gfc_trans_runtime_check (bool, bool, tree, stmtblock_t *, locus *, | |
694 const char *, ...); | |
695 | |
696 /* Generate a runtime check for same string length. */ | |
697 void gfc_trans_same_strlen_check (const char*, locus*, tree, tree, | |
698 stmtblock_t*); | |
699 | |
700 /* Generate a call to free(). */ | |
701 tree gfc_call_free (tree); | |
702 | |
703 /* Allocate memory after performing a few checks. */ | |
704 tree gfc_call_malloc (stmtblock_t *, tree, tree); | |
705 | |
706 /* Build a memcpy call. */ | |
707 tree gfc_build_memcpy_call (tree, tree, tree); | |
708 | |
709 /* Register memory with the coarray library. */ | |
710 void gfc_allocate_using_caf_lib (stmtblock_t *, tree, tree, tree, tree, tree, | |
711 tree, gfc_coarray_regtype); | |
712 | |
713 /* Allocate memory for allocatable variables, with optional status variable. */ | |
714 void gfc_allocate_allocatable (stmtblock_t*, tree, tree, tree, tree, | |
715 tree, tree, tree, gfc_expr*, int); | |
716 | |
717 /* Allocate memory, with optional status variable. */ | |
718 void gfc_allocate_using_malloc (stmtblock_t *, tree, tree, tree); | |
719 | |
720 /* Generate code to deallocate an array. */ | |
721 tree gfc_deallocate_with_status (tree, tree, tree, tree, tree, bool, | |
722 gfc_expr *, int, tree a = NULL_TREE, | |
723 tree c = NULL_TREE); | |
724 tree gfc_deallocate_scalar_with_status (tree, tree, tree, bool, gfc_expr*, | |
725 gfc_typespec, bool c = false); | |
726 | |
727 /* Generate code to call realloc(). */ | |
728 tree gfc_call_realloc (stmtblock_t *, tree, tree); | |
729 | |
730 /* Assign a derived type constructor to a variable. */ | |
731 tree gfc_trans_structure_assign (tree, gfc_expr *, bool, bool c = false); | |
732 | |
733 /* Generate code for an assignment, includes scalarization. */ | |
734 tree gfc_trans_assignment (gfc_expr *, gfc_expr *, bool, bool, bool p = false, | |
735 bool a = true); | |
736 | |
737 /* Generate code for a pointer assignment. */ | |
738 tree gfc_trans_pointer_assignment (gfc_expr *, gfc_expr *); | |
739 | |
740 /* Initialize function decls for library functions. */ | |
741 void gfc_build_intrinsic_lib_fndecls (void); | |
742 /* Create function decls for IO library functions. */ | |
743 void gfc_build_io_library_fndecls (void); | |
744 /* Build a function decl for a library function. */ | |
745 tree gfc_build_library_function_decl (tree, tree, int, ...); | |
746 tree gfc_build_library_function_decl_with_spec (tree name, const char *spec, | |
747 tree rettype, int nargs, ...); | |
748 | |
749 /* Process the local variable decls of a block construct. */ | |
750 void gfc_process_block_locals (gfc_namespace*); | |
751 | |
752 /* Output initialization/clean-up code that was deferred. */ | |
753 void gfc_trans_deferred_vars (gfc_symbol*, gfc_wrapped_block *); | |
754 | |
755 /* In f95-lang.c. */ | |
756 tree pushdecl (tree); | |
757 tree pushdecl_top_level (tree); | |
758 void pushlevel (void); | |
759 tree poplevel (int, int); | |
760 tree getdecls (void); | |
761 | |
762 /* In trans-types.c. */ | |
763 struct array_descr_info; | |
764 bool gfc_get_array_descr_info (const_tree, struct array_descr_info *); | |
765 | |
766 /* In trans-openmp.c */ | |
767 bool gfc_omp_privatize_by_reference (const_tree); | |
768 enum omp_clause_default_kind gfc_omp_predetermined_sharing (tree); | |
769 tree gfc_omp_report_decl (tree); | |
770 tree gfc_omp_clause_default_ctor (tree, tree, tree); | |
771 tree gfc_omp_clause_copy_ctor (tree, tree, tree); | |
772 tree gfc_omp_clause_assign_op (tree, tree, tree); | |
773 tree gfc_omp_clause_linear_ctor (tree, tree, tree, tree); | |
774 tree gfc_omp_clause_dtor (tree, tree); | |
775 void gfc_omp_finish_clause (tree, gimple_seq *); | |
776 bool gfc_omp_scalar_p (tree); | |
777 bool gfc_omp_disregard_value_expr (tree, bool); | |
778 bool gfc_omp_private_debug_clause (tree, bool); | |
779 bool gfc_omp_private_outer_ref (tree); | |
780 struct gimplify_omp_ctx; | |
781 void gfc_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx *, tree); | |
782 | |
783 /* Runtime library function decls. */ | |
784 extern GTY(()) tree gfor_fndecl_pause_numeric; | |
785 extern GTY(()) tree gfor_fndecl_pause_string; | |
786 extern GTY(()) tree gfor_fndecl_stop_numeric; | |
787 extern GTY(()) tree gfor_fndecl_stop_string; | |
788 extern GTY(()) tree gfor_fndecl_error_stop_numeric; | |
789 extern GTY(()) tree gfor_fndecl_error_stop_string; | |
790 extern GTY(()) tree gfor_fndecl_runtime_error; | |
791 extern GTY(()) tree gfor_fndecl_runtime_error_at; | |
792 extern GTY(()) tree gfor_fndecl_runtime_warning_at; | |
793 extern GTY(()) tree gfor_fndecl_os_error; | |
794 extern GTY(()) tree gfor_fndecl_generate_error; | |
795 extern GTY(()) tree gfor_fndecl_set_fpe; | |
796 extern GTY(()) tree gfor_fndecl_set_options; | |
797 extern GTY(()) tree gfor_fndecl_ttynam; | |
798 extern GTY(()) tree gfor_fndecl_ctime; | |
799 extern GTY(()) tree gfor_fndecl_fdate; | |
800 extern GTY(()) tree gfor_fndecl_in_pack; | |
801 extern GTY(()) tree gfor_fndecl_in_unpack; | |
802 extern GTY(()) tree gfor_fndecl_associated; | |
803 extern GTY(()) tree gfor_fndecl_system_clock4; | |
804 extern GTY(()) tree gfor_fndecl_system_clock8; | |
805 | |
806 | |
807 /* Coarray run-time library function decls. */ | |
808 extern GTY(()) tree gfor_fndecl_caf_init; | |
809 extern GTY(()) tree gfor_fndecl_caf_finalize; | |
810 extern GTY(()) tree gfor_fndecl_caf_this_image; | |
811 extern GTY(()) tree gfor_fndecl_caf_num_images; | |
812 extern GTY(()) tree gfor_fndecl_caf_register; | |
813 extern GTY(()) tree gfor_fndecl_caf_deregister; | |
814 extern GTY(()) tree gfor_fndecl_caf_get; | |
815 extern GTY(()) tree gfor_fndecl_caf_send; | |
816 extern GTY(()) tree gfor_fndecl_caf_sendget; | |
817 extern GTY(()) tree gfor_fndecl_caf_get_by_ref; | |
818 extern GTY(()) tree gfor_fndecl_caf_send_by_ref; | |
819 extern GTY(()) tree gfor_fndecl_caf_sendget_by_ref; | |
820 extern GTY(()) tree gfor_fndecl_caf_sync_all; | |
821 extern GTY(()) tree gfor_fndecl_caf_sync_memory; | |
822 extern GTY(()) tree gfor_fndecl_caf_sync_images; | |
823 extern GTY(()) tree gfor_fndecl_caf_stop_numeric; | |
824 extern GTY(()) tree gfor_fndecl_caf_stop_str; | |
825 extern GTY(()) tree gfor_fndecl_caf_error_stop; | |
826 extern GTY(()) tree gfor_fndecl_caf_error_stop_str; | |
827 extern GTY(()) tree gfor_fndecl_caf_atomic_def; | |
828 extern GTY(()) tree gfor_fndecl_caf_atomic_ref; | |
829 extern GTY(()) tree gfor_fndecl_caf_atomic_cas; | |
830 extern GTY(()) tree gfor_fndecl_caf_atomic_op; | |
831 extern GTY(()) tree gfor_fndecl_caf_lock; | |
832 extern GTY(()) tree gfor_fndecl_caf_unlock; | |
833 extern GTY(()) tree gfor_fndecl_caf_event_post; | |
834 extern GTY(()) tree gfor_fndecl_caf_event_wait; | |
835 extern GTY(()) tree gfor_fndecl_caf_event_query; | |
836 extern GTY(()) tree gfor_fndecl_caf_fail_image; | |
837 extern GTY(()) tree gfor_fndecl_caf_failed_images; | |
838 extern GTY(()) tree gfor_fndecl_caf_image_status; | |
839 extern GTY(()) tree gfor_fndecl_caf_stopped_images; | |
840 extern GTY(()) tree gfor_fndecl_co_broadcast; | |
841 extern GTY(()) tree gfor_fndecl_co_max; | |
842 extern GTY(()) tree gfor_fndecl_co_min; | |
843 extern GTY(()) tree gfor_fndecl_co_reduce; | |
844 extern GTY(()) tree gfor_fndecl_co_sum; | |
845 extern GTY(()) tree gfor_fndecl_caf_is_present; | |
846 | |
847 /* Math functions. Many other math functions are handled in | |
848 trans-intrinsic.c. */ | |
849 | |
850 typedef struct GTY(()) gfc_powdecl_list { | |
851 tree integer; | |
852 tree real; | |
853 tree cmplx; | |
854 } | |
855 gfc_powdecl_list; | |
856 | |
857 extern GTY(()) gfc_powdecl_list gfor_fndecl_math_powi[4][3]; | |
858 extern GTY(()) tree gfor_fndecl_math_ishftc4; | |
859 extern GTY(()) tree gfor_fndecl_math_ishftc8; | |
860 extern GTY(()) tree gfor_fndecl_math_ishftc16; | |
861 | |
862 /* BLAS functions. */ | |
863 extern GTY(()) tree gfor_fndecl_sgemm; | |
864 extern GTY(()) tree gfor_fndecl_dgemm; | |
865 extern GTY(()) tree gfor_fndecl_cgemm; | |
866 extern GTY(()) tree gfor_fndecl_zgemm; | |
867 | |
868 /* String functions. */ | |
869 extern GTY(()) tree gfor_fndecl_compare_string; | |
870 extern GTY(()) tree gfor_fndecl_concat_string; | |
871 extern GTY(()) tree gfor_fndecl_string_len_trim; | |
872 extern GTY(()) tree gfor_fndecl_string_index; | |
873 extern GTY(()) tree gfor_fndecl_string_scan; | |
874 extern GTY(()) tree gfor_fndecl_string_verify; | |
875 extern GTY(()) tree gfor_fndecl_string_trim; | |
876 extern GTY(()) tree gfor_fndecl_string_minmax; | |
877 extern GTY(()) tree gfor_fndecl_adjustl; | |
878 extern GTY(()) tree gfor_fndecl_adjustr; | |
879 extern GTY(()) tree gfor_fndecl_select_string; | |
880 extern GTY(()) tree gfor_fndecl_compare_string_char4; | |
881 extern GTY(()) tree gfor_fndecl_concat_string_char4; | |
882 extern GTY(()) tree gfor_fndecl_string_len_trim_char4; | |
883 extern GTY(()) tree gfor_fndecl_string_index_char4; | |
884 extern GTY(()) tree gfor_fndecl_string_scan_char4; | |
885 extern GTY(()) tree gfor_fndecl_string_verify_char4; | |
886 extern GTY(()) tree gfor_fndecl_string_trim_char4; | |
887 extern GTY(()) tree gfor_fndecl_string_minmax_char4; | |
888 extern GTY(()) tree gfor_fndecl_adjustl_char4; | |
889 extern GTY(()) tree gfor_fndecl_adjustr_char4; | |
890 extern GTY(()) tree gfor_fndecl_select_string_char4; | |
891 | |
892 /* Conversion between character kinds. */ | |
893 extern GTY(()) tree gfor_fndecl_convert_char1_to_char4; | |
894 extern GTY(()) tree gfor_fndecl_convert_char4_to_char1; | |
895 | |
896 /* Other misc. runtime library functions. */ | |
897 extern GTY(()) tree gfor_fndecl_size0; | |
898 extern GTY(()) tree gfor_fndecl_size1; | |
899 extern GTY(()) tree gfor_fndecl_iargc; | |
900 | |
901 /* Implemented in Fortran. */ | |
902 extern GTY(()) tree gfor_fndecl_sc_kind; | |
903 extern GTY(()) tree gfor_fndecl_si_kind; | |
904 extern GTY(()) tree gfor_fndecl_sr_kind; | |
905 | |
906 /* IEEE-related. */ | |
907 extern GTY(()) tree gfor_fndecl_ieee_procedure_entry; | |
908 extern GTY(()) tree gfor_fndecl_ieee_procedure_exit; | |
909 | |
910 | |
911 /* True if node is an integer constant. */ | |
912 #define INTEGER_CST_P(node) (TREE_CODE(node) == INTEGER_CST) | |
913 | |
914 /* gfortran-specific declaration information, the _CONT versions denote | |
915 arrays with CONTIGUOUS attribute. */ | |
916 | |
917 enum gfc_array_kind | |
918 { | |
919 GFC_ARRAY_UNKNOWN, | |
920 GFC_ARRAY_ASSUMED_SHAPE, | |
921 GFC_ARRAY_ASSUMED_SHAPE_CONT, | |
922 GFC_ARRAY_ASSUMED_RANK, | |
923 GFC_ARRAY_ASSUMED_RANK_CONT, | |
924 GFC_ARRAY_ALLOCATABLE, | |
925 GFC_ARRAY_POINTER, | |
926 GFC_ARRAY_POINTER_CONT | |
927 }; | |
928 | |
929 /* Array types only. */ | |
930 struct GTY(()) lang_type { | |
931 int rank, corank; | |
932 enum gfc_array_kind akind; | |
933 tree lbound[GFC_MAX_DIMENSIONS]; | |
934 tree ubound[GFC_MAX_DIMENSIONS]; | |
935 tree stride[GFC_MAX_DIMENSIONS]; | |
936 tree size; | |
937 tree offset; | |
938 tree dtype; | |
939 tree dataptr_type; | |
940 tree span; | |
941 tree base_decl[2]; | |
942 tree nonrestricted_type; | |
943 tree caf_token; | |
944 tree caf_offset; | |
945 }; | |
946 | |
947 struct GTY(()) lang_decl { | |
948 /* Dummy variables. */ | |
949 tree saved_descriptor; | |
950 /* Assigned integer nodes. Stringlength is the IO format string's length. | |
951 Addr is the address of the string or the target label. Stringlength is | |
952 initialized to -2 and assigned to -1 when addr is assigned to the | |
953 address of target label. */ | |
954 tree stringlen; | |
955 tree addr; | |
956 tree span; | |
957 /* For assumed-shape coarrays. */ | |
958 tree token, caf_offset; | |
959 unsigned int scalar_allocatable : 1; | |
960 unsigned int scalar_pointer : 1; | |
961 }; | |
962 | |
963 | |
964 #define GFC_DECL_ASSIGN_ADDR(node) DECL_LANG_SPECIFIC(node)->addr | |
965 #define GFC_DECL_STRING_LEN(node) DECL_LANG_SPECIFIC(node)->stringlen | |
966 #define GFC_DECL_SPAN(node) DECL_LANG_SPECIFIC(node)->span | |
967 #define GFC_DECL_TOKEN(node) DECL_LANG_SPECIFIC(node)->token | |
968 #define GFC_DECL_CAF_OFFSET(node) DECL_LANG_SPECIFIC(node)->caf_offset | |
969 #define GFC_DECL_SAVED_DESCRIPTOR(node) \ | |
970 (DECL_LANG_SPECIFIC(node)->saved_descriptor) | |
971 #define GFC_DECL_SCALAR_ALLOCATABLE(node) \ | |
972 (DECL_LANG_SPECIFIC (node)->scalar_allocatable) | |
973 #define GFC_DECL_SCALAR_POINTER(node) \ | |
974 (DECL_LANG_SPECIFIC (node)->scalar_pointer) | |
975 #define GFC_DECL_GET_SCALAR_ALLOCATABLE(node) \ | |
976 (DECL_LANG_SPECIFIC (node) ? GFC_DECL_SCALAR_ALLOCATABLE (node) : 0) | |
977 #define GFC_DECL_GET_SCALAR_POINTER(node) \ | |
978 (DECL_LANG_SPECIFIC (node) ? GFC_DECL_SCALAR_POINTER (node) : 0) | |
979 #define GFC_DECL_PACKED_ARRAY(node) DECL_LANG_FLAG_0(node) | |
980 #define GFC_DECL_PARTIAL_PACKED_ARRAY(node) DECL_LANG_FLAG_1(node) | |
981 #define GFC_DECL_ASSIGN(node) DECL_LANG_FLAG_2(node) | |
982 #define GFC_DECL_COMMON_OR_EQUIV(node) DECL_LANG_FLAG_3(node) | |
983 #define GFC_DECL_CRAY_POINTEE(node) DECL_LANG_FLAG_4(node) | |
984 #define GFC_DECL_RESULT(node) DECL_LANG_FLAG_5(node) | |
985 #define GFC_DECL_PTR_ARRAY_P(node) DECL_LANG_FLAG_6(node) | |
986 #define GFC_DECL_ASSOCIATE_VAR_P(node) DECL_LANG_FLAG_7(node) | |
987 #define GFC_DECL_CLASS(node) DECL_LANG_FLAG_8(node) | |
988 | |
989 /* An array descriptor. */ | |
990 #define GFC_DESCRIPTOR_TYPE_P(node) TYPE_LANG_FLAG_1(node) | |
991 /* An array without a descriptor. */ | |
992 #define GFC_ARRAY_TYPE_P(node) TYPE_LANG_FLAG_2(node) | |
993 /* Fortran CLASS type. */ | |
994 #define GFC_CLASS_TYPE_P(node) TYPE_LANG_FLAG_4(node) | |
995 /* The GFC_TYPE_ARRAY_* members are present in both descriptor and | |
996 descriptorless array types. */ | |
997 #define GFC_TYPE_ARRAY_LBOUND(node, dim) \ | |
998 (TYPE_LANG_SPECIFIC(node)->lbound[dim]) | |
999 #define GFC_TYPE_ARRAY_UBOUND(node, dim) \ | |
1000 (TYPE_LANG_SPECIFIC(node)->ubound[dim]) | |
1001 #define GFC_TYPE_ARRAY_STRIDE(node, dim) \ | |
1002 (TYPE_LANG_SPECIFIC(node)->stride[dim]) | |
1003 #define GFC_TYPE_ARRAY_RANK(node) (TYPE_LANG_SPECIFIC(node)->rank) | |
1004 #define GFC_TYPE_ARRAY_CORANK(node) (TYPE_LANG_SPECIFIC(node)->corank) | |
1005 #define GFC_TYPE_ARRAY_CAF_TOKEN(node) (TYPE_LANG_SPECIFIC(node)->caf_token) | |
1006 #define GFC_TYPE_ARRAY_CAF_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->caf_offset) | |
1007 #define GFC_TYPE_ARRAY_SIZE(node) (TYPE_LANG_SPECIFIC(node)->size) | |
1008 #define GFC_TYPE_ARRAY_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->offset) | |
1009 #define GFC_TYPE_ARRAY_AKIND(node) (TYPE_LANG_SPECIFIC(node)->akind) | |
1010 /* Code should use gfc_get_dtype instead of accessing this directly. It may | |
1011 not be known when the type is created. */ | |
1012 #define GFC_TYPE_ARRAY_DTYPE(node) (TYPE_LANG_SPECIFIC(node)->dtype) | |
1013 #define GFC_TYPE_ARRAY_DATAPTR_TYPE(node) \ | |
1014 (TYPE_LANG_SPECIFIC(node)->dataptr_type) | |
1015 #define GFC_TYPE_ARRAY_SPAN(node) (TYPE_LANG_SPECIFIC(node)->span) | |
1016 #define GFC_TYPE_ARRAY_BASE_DECL(node, internal) \ | |
1017 (TYPE_LANG_SPECIFIC(node)->base_decl[(internal)]) | |
1018 | |
1019 | |
1020 /* Build an expression with void type. */ | |
1021 #define build1_v(code, arg) \ | |
1022 fold_build1_loc (input_location, code, void_type_node, arg) | |
1023 #define build2_v(code, arg1, arg2) \ | |
1024 fold_build2_loc (input_location, code, void_type_node, arg1, arg2) | |
1025 #define build3_v(code, arg1, arg2, arg3) \ | |
1026 fold_build3_loc (input_location, code, void_type_node, arg1, arg2, arg3) | |
1027 #define build4_v(code, arg1, arg2, arg3, arg4) \ | |
1028 build4_loc (input_location, code, void_type_node, arg1, arg2, \ | |
1029 arg3, arg4) | |
1030 | |
1031 /* This group of functions allows a caller to evaluate an expression from | |
1032 the callee's interface. It establishes a mapping between the interface's | |
1033 dummy arguments and the caller's actual arguments, then applies that | |
1034 mapping to a given gfc_expr. | |
1035 | |
1036 You can initialize a mapping structure like so: | |
1037 | |
1038 gfc_interface_mapping mapping; | |
1039 ... | |
1040 gfc_init_interface_mapping (&mapping); | |
1041 | |
1042 You should then evaluate each actual argument into a temporary | |
1043 gfc_se structure, here called "se", and map the result to the | |
1044 dummy argument's symbol, here called "sym": | |
1045 | |
1046 gfc_add_interface_mapping (&mapping, sym, &se); | |
1047 | |
1048 After adding all mappings, you should call: | |
1049 | |
1050 gfc_finish_interface_mapping (&mapping, pre, post); | |
1051 | |
1052 where "pre" and "post" are statement blocks for initialization | |
1053 and finalization code respectively. You can then evaluate an | |
1054 interface expression "expr" as follows: | |
1055 | |
1056 gfc_apply_interface_mapping (&mapping, se, expr); | |
1057 | |
1058 Once you've evaluated all expressions, you should free | |
1059 the mapping structure with: | |
1060 | |
1061 gfc_free_interface_mapping (&mapping); */ | |
1062 | |
1063 | |
1064 /* This structure represents a mapping from OLD to NEW, where OLD is a | |
1065 dummy argument symbol and NEW is a symbol that represents the value | |
1066 of an actual argument. Mappings are linked together using NEXT | |
1067 (in no particular order). */ | |
1068 typedef struct gfc_interface_sym_mapping | |
1069 { | |
1070 struct gfc_interface_sym_mapping *next; | |
1071 gfc_symbol *old; | |
1072 gfc_symtree *new_sym; | |
1073 gfc_expr *expr; | |
1074 } | |
1075 gfc_interface_sym_mapping; | |
1076 | |
1077 | |
1078 /* This structure is used by callers to evaluate an expression from | |
1079 a callee's interface. */ | |
1080 typedef struct gfc_interface_mapping | |
1081 { | |
1082 /* Maps the interface's dummy arguments to the values that the caller | |
1083 is passing. The whole list is owned by this gfc_interface_mapping. */ | |
1084 gfc_interface_sym_mapping *syms; | |
1085 | |
1086 /* A list of gfc_charlens that were needed when creating copies of | |
1087 expressions. The whole list is owned by this gfc_interface_mapping. */ | |
1088 gfc_charlen *charlens; | |
1089 } | |
1090 gfc_interface_mapping; | |
1091 | |
1092 void gfc_init_interface_mapping (gfc_interface_mapping *); | |
1093 void gfc_free_interface_mapping (gfc_interface_mapping *); | |
1094 void gfc_add_interface_mapping (gfc_interface_mapping *, | |
1095 gfc_symbol *, gfc_se *, gfc_expr *); | |
1096 void gfc_finish_interface_mapping (gfc_interface_mapping *, | |
1097 stmtblock_t *, stmtblock_t *); | |
1098 void gfc_apply_interface_mapping (gfc_interface_mapping *, | |
1099 gfc_se *, gfc_expr *); | |
1100 | |
1101 | |
1102 /* Standard error messages used in all the trans-*.c files. */ | |
1103 extern const char gfc_msg_fault[]; | |
1104 extern const char gfc_msg_wrong_return[]; | |
1105 | |
1106 #define OMPWS_WORKSHARE_FLAG 1 /* Set if in a workshare construct. */ | |
1107 #define OMPWS_CURR_SINGLEUNIT 2 /* Set if current gfc_code in workshare | |
1108 construct is not workshared. */ | |
1109 #define OMPWS_SCALARIZER_WS 4 /* Set if scalarizer should attempt | |
1110 to create parallel loops. */ | |
1111 #define OMPWS_SCALARIZER_BODY 8 /* Set if handling body of potential | |
1112 parallel loop. */ | |
1113 #define OMPWS_NOWAIT 16 /* Use NOWAIT on OMP_FOR. */ | |
1114 extern int ompws_flags; | |
1115 | |
1116 #endif /* GFC_TRANS_H */ |