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1 | /* Header for code translation functions | |
2 | Copyright (C) 2002-2018 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 | unsigned no_bounds_check:1; | |
334 | } | |
335 | gfc_ss; | |
336 | #define gfc_get_ss() XCNEW (gfc_ss) | |
337 | ||
338 | /* The contents of this aren't actually used. A NULL SS chain indicates a | |
339 | scalar expression, so this pointer is used to terminate SS chains. */ | |
340 | extern gfc_ss * const gfc_ss_terminator; | |
341 | ||
342 | /* Holds information about an expression while it is being scalarized. */ | |
343 | typedef struct gfc_loopinfo | |
344 | { | |
345 | stmtblock_t pre; | |
346 | stmtblock_t post; | |
347 | ||
348 | int dimen; | |
349 | ||
350 | /* All the SS involved with this loop. */ | |
351 | gfc_ss *ss; | |
352 | /* The SS describing the temporary used in an assignment. */ | |
353 | gfc_ss *temp_ss; | |
354 | ||
355 | /* Non-null if this loop is nested in another one. */ | |
356 | struct gfc_loopinfo *parent; | |
357 | ||
358 | /* Chain of nested loops. */ | |
359 | struct gfc_loopinfo *nested, *next; | |
360 | ||
361 | /* The scalarization loop index variables. */ | |
362 | tree loopvar[GFC_MAX_DIMENSIONS]; | |
363 | ||
364 | /* The bounds of the scalarization loops. */ | |
365 | tree from[GFC_MAX_DIMENSIONS]; | |
366 | tree to[GFC_MAX_DIMENSIONS]; | |
367 | gfc_ss *specloop[GFC_MAX_DIMENSIONS]; | |
368 | ||
369 | /* The code member contains the code for the body of the next outer loop. */ | |
370 | stmtblock_t code[GFC_MAX_DIMENSIONS]; | |
371 | ||
372 | /* Order in which the dimensions should be looped, innermost first. */ | |
373 | int order[GFC_MAX_DIMENSIONS]; | |
374 | ||
375 | /* Enum to control loop reversal. */ | |
376 | gfc_reverse reverse[GFC_MAX_DIMENSIONS]; | |
377 | ||
378 | /* The number of dimensions for which a temporary is used. */ | |
379 | int temp_dim; | |
380 | ||
381 | /* If set we don't need the loop variables. */ | |
382 | unsigned array_parameter:1; | |
383 | } | |
384 | gfc_loopinfo; | |
385 | ||
386 | #define gfc_get_loopinfo() XCNEW (gfc_loopinfo) | |
387 | ||
388 | /* Information about a symbol that has been shadowed by a temporary. */ | |
389 | typedef struct | |
390 | { | |
391 | symbol_attribute attr; | |
392 | tree decl; | |
393 | } | |
394 | gfc_saved_var; | |
395 | ||
396 | ||
397 | /* Store information about a block of code together with special | |
398 | initialization and clean-up code. This can be used to incrementally add | |
399 | init and cleanup, and in the end put everything together to a | |
400 | try-finally expression. */ | |
401 | typedef struct | |
402 | { | |
403 | tree init; | |
404 | tree cleanup; | |
405 | tree code; | |
406 | } | |
407 | gfc_wrapped_block; | |
408 | ||
409 | /* Class API functions. */ | |
410 | tree gfc_class_set_static_fields (tree, tree, tree); | |
411 | tree gfc_class_data_get (tree); | |
412 | tree gfc_class_vptr_get (tree); | |
413 | tree gfc_class_len_get (tree); | |
414 | tree gfc_class_len_or_zero_get (tree); | |
415 | gfc_expr * gfc_find_and_cut_at_last_class_ref (gfc_expr *); | |
416 | /* Get an accessor to the class' vtab's * field, when a class handle is | |
417 | available. */ | |
418 | tree gfc_class_vtab_hash_get (tree); | |
419 | tree gfc_class_vtab_size_get (tree); | |
420 | tree gfc_class_vtab_extends_get (tree); | |
421 | tree gfc_class_vtab_def_init_get (tree); | |
422 | tree gfc_class_vtab_copy_get (tree); | |
423 | tree gfc_class_vtab_final_get (tree); | |
424 | /* Get an accessor to the vtab's * field, when a vptr handle is present. */ | |
425 | tree gfc_vtpr_hash_get (tree); | |
426 | tree gfc_vptr_size_get (tree); | |
427 | tree gfc_vptr_extends_get (tree); | |
428 | tree gfc_vptr_def_init_get (tree); | |
429 | tree gfc_vptr_copy_get (tree); | |
430 | tree gfc_vptr_final_get (tree); | |
431 | tree gfc_vptr_deallocate_get (tree); | |
432 | void gfc_reset_vptr (stmtblock_t *, gfc_expr *); | |
433 | void gfc_reset_len (stmtblock_t *, gfc_expr *); | |
434 | tree gfc_get_vptr_from_expr (tree); | |
435 | tree gfc_get_class_array_ref (tree, tree, tree, bool); | |
436 | tree gfc_copy_class_to_class (tree, tree, tree, bool); | |
437 | bool gfc_add_finalizer_call (stmtblock_t *, gfc_expr *); | |
438 | bool gfc_add_comp_finalizer_call (stmtblock_t *, tree, gfc_component *, bool); | |
439 | ||
440 | void gfc_conv_derived_to_class (gfc_se *, gfc_expr *, gfc_typespec, tree, bool, | |
441 | bool); | |
442 | void gfc_conv_class_to_class (gfc_se *, gfc_expr *, gfc_typespec, bool, bool, | |
443 | bool, bool); | |
444 | ||
445 | /* Initialize an init/cleanup block. */ | |
446 | void gfc_start_wrapped_block (gfc_wrapped_block* block, tree code); | |
447 | /* Add a pair of init/cleanup code to the block. Each one might be a | |
448 | NULL_TREE if not required. */ | |
449 | void gfc_add_init_cleanup (gfc_wrapped_block* block, tree init, tree cleanup); | |
450 | /* Finalize the block, that is, create a single expression encapsulating the | |
451 | original code together with init and clean-up code. */ | |
452 | tree gfc_finish_wrapped_block (gfc_wrapped_block* block); | |
453 | ||
454 | ||
455 | /* Advance the SS chain to the next term. */ | |
456 | void gfc_advance_se_ss_chain (gfc_se *); | |
457 | ||
458 | /* Call this to initialize a gfc_se structure before use | |
459 | first parameter is structure to initialize, second is | |
460 | parent to get scalarization data from, or NULL. */ | |
461 | void gfc_init_se (gfc_se *, gfc_se *); | |
462 | ||
463 | /* Create an artificial variable decl and add it to the current scope. */ | |
464 | tree gfc_create_var (tree, const char *); | |
465 | /* Like above but doesn't add it to the current scope. */ | |
466 | tree gfc_create_var_np (tree, const char *); | |
467 | ||
468 | /* Store the result of an expression in a temp variable so it can be used | |
469 | repeatedly even if the original changes */ | |
470 | void gfc_make_safe_expr (gfc_se * se); | |
471 | ||
472 | /* Makes sure se is suitable for passing as a function string parameter. */ | |
473 | void gfc_conv_string_parameter (gfc_se * se); | |
474 | ||
475 | /* Compare two strings. */ | |
476 | tree gfc_build_compare_string (tree, tree, tree, tree, int, enum tree_code); | |
477 | ||
478 | /* When using the gfc_conv_* make sure you understand what they do, i.e. | |
479 | when a POST chain may be created, and what the returned expression may be | |
480 | used for. Note that character strings have special handling. This | |
481 | should not be a problem as most statements/operations only deal with | |
482 | numeric/logical types. See the implementations in trans-expr.c | |
483 | for details of the individual functions. */ | |
484 | ||
485 | void gfc_conv_expr (gfc_se * se, gfc_expr * expr); | |
486 | void gfc_conv_expr_val (gfc_se * se, gfc_expr * expr); | |
487 | void gfc_conv_expr_lhs (gfc_se * se, gfc_expr * expr); | |
488 | void gfc_conv_expr_reference (gfc_se * se, gfc_expr *); | |
489 | void gfc_conv_expr_type (gfc_se * se, gfc_expr *, tree); | |
490 | ||
491 | ||
492 | /* trans-expr.c */ | |
493 | tree gfc_conv_scalar_to_descriptor (gfc_se *, tree, symbol_attribute); | |
494 | tree gfc_get_ultimate_alloc_ptr_comps_caf_token (gfc_se *, gfc_expr *); | |
495 | void gfc_conv_scalar_char_value (gfc_symbol *sym, gfc_se *se, gfc_expr **expr); | |
496 | tree gfc_string_to_single_character (tree len, tree str, int kind); | |
497 | tree gfc_get_tree_for_caf_expr (gfc_expr *); | |
498 | void gfc_get_caf_token_offset (gfc_se*, tree *, tree *, tree, tree, gfc_expr *); | |
499 | tree gfc_caf_get_image_index (stmtblock_t *, gfc_expr *, tree); | |
500 | ||
501 | /* Find the decl containing the auxiliary variables for assigned variables. */ | |
502 | void gfc_conv_label_variable (gfc_se * se, gfc_expr * expr); | |
503 | /* If the value is not constant, Create a temporary and copy the value. */ | |
504 | tree gfc_evaluate_now_loc (location_t, tree, stmtblock_t *); | |
505 | tree gfc_evaluate_now (tree, stmtblock_t *); | |
506 | ||
507 | /* Find the appropriate variant of a math intrinsic. */ | |
508 | tree gfc_builtin_decl_for_float_kind (enum built_in_function, int); | |
509 | ||
510 | tree size_of_string_in_bytes (int, tree); | |
511 | ||
512 | /* Intrinsic procedure handling. */ | |
513 | tree gfc_conv_intrinsic_subroutine (gfc_code *); | |
514 | void gfc_conv_intrinsic_function (gfc_se *, gfc_expr *); | |
515 | bool gfc_conv_ieee_arithmetic_function (gfc_se *, gfc_expr *); | |
516 | tree gfc_save_fp_state (stmtblock_t *); | |
517 | void gfc_restore_fp_state (stmtblock_t *, tree); | |
518 | ||
519 | bool gfc_expr_is_variable (gfc_expr *); | |
520 | ||
521 | /* Does an intrinsic map directly to an external library call | |
522 | This is true for array-returning intrinsics, unless | |
523 | gfc_inline_intrinsic_function_p returns true. */ | |
524 | int gfc_is_intrinsic_libcall (gfc_expr *); | |
525 | ||
526 | /* Used to call ordinary functions/subroutines | |
527 | and procedure pointer components. */ | |
528 | int gfc_conv_procedure_call (gfc_se *, gfc_symbol *, gfc_actual_arglist *, | |
529 | gfc_expr *, vec<tree, va_gc> *); | |
530 | ||
531 | void gfc_conv_subref_array_arg (gfc_se *, gfc_expr *, int, sym_intent, bool); | |
532 | ||
533 | /* Generate code for a scalar assignment. */ | |
534 | tree gfc_trans_scalar_assign (gfc_se *, gfc_se *, gfc_typespec, bool, bool, | |
535 | bool c = false); | |
536 | ||
537 | /* Translate COMMON blocks. */ | |
538 | void gfc_trans_common (gfc_namespace *); | |
539 | ||
540 | /* Translate a derived type constructor. */ | |
541 | void gfc_conv_structure (gfc_se *, gfc_expr *, int); | |
542 | ||
543 | /* Return an expression which determines if a dummy parameter is present. */ | |
544 | tree gfc_conv_expr_present (gfc_symbol *); | |
545 | /* Convert a missing, dummy argument into a null or zero. */ | |
546 | void gfc_conv_missing_dummy (gfc_se *, gfc_expr *, gfc_typespec, int); | |
547 | ||
548 | /* Generate code to allocate a string temporary. */ | |
549 | tree gfc_conv_string_tmp (gfc_se *, tree, tree); | |
550 | /* Get the string length variable belonging to an expression. */ | |
551 | tree gfc_get_expr_charlen (gfc_expr *); | |
552 | /* Initialize a string length variable. */ | |
553 | void gfc_conv_string_length (gfc_charlen *, gfc_expr *, stmtblock_t *); | |
554 | /* Ensure type sizes can be gimplified. */ | |
555 | void gfc_trans_vla_type_sizes (gfc_symbol *, stmtblock_t *); | |
556 | ||
557 | /* Add an expression to the end of a block. */ | |
558 | void gfc_add_expr_to_block (stmtblock_t *, tree); | |
559 | /* Add an expression to the beginning of a block. */ | |
560 | void gfc_prepend_expr_to_block (stmtblock_t *, tree); | |
561 | /* Add a block to the end of a block. */ | |
562 | void gfc_add_block_to_block (stmtblock_t *, stmtblock_t *); | |
563 | /* Add a MODIFY_EXPR to a block. */ | |
564 | void gfc_add_modify_loc (location_t, stmtblock_t *, tree, tree); | |
565 | void gfc_add_modify (stmtblock_t *, tree, tree); | |
566 | ||
567 | /* Initialize a statement block. */ | |
568 | void gfc_init_block (stmtblock_t *); | |
569 | /* Start a new statement block. Like gfc_init_block but also starts a new | |
570 | variable scope. */ | |
571 | void gfc_start_block (stmtblock_t *); | |
572 | /* Finish a statement block. Also closes the scope if the block was created | |
573 | with gfc_start_block. */ | |
574 | tree gfc_finish_block (stmtblock_t *); | |
575 | /* Merge the scope of a block with its parent. */ | |
576 | void gfc_merge_block_scope (stmtblock_t * block); | |
577 | ||
578 | /* Return the backend label decl. */ | |
579 | tree gfc_get_label_decl (gfc_st_label *); | |
580 | ||
581 | /* Return the decl for an external function. */ | |
582 | tree gfc_get_extern_function_decl (gfc_symbol *); | |
583 | ||
584 | /* Return the decl for a function. */ | |
585 | tree gfc_get_function_decl (gfc_symbol *); | |
586 | ||
587 | /* Build an ADDR_EXPR. */ | |
588 | tree gfc_build_addr_expr (tree, tree); | |
589 | ||
590 | /* Build an ARRAY_REF. */ | |
591 | tree gfc_build_array_ref (tree, tree, tree, tree vptr = NULL_TREE); | |
592 | ||
593 | /* Creates a label. Decl is artificial if label_id == NULL_TREE. */ | |
594 | tree gfc_build_label_decl (tree); | |
595 | ||
596 | /* Return the decl used to hold the function return value. | |
597 | Do not use if the function has an explicit result variable. */ | |
598 | tree gfc_get_fake_result_decl (gfc_symbol *, int); | |
599 | ||
600 | /* Add a decl to the binding level for the current function. */ | |
601 | void gfc_add_decl_to_function (tree); | |
602 | ||
603 | /* Make prototypes for runtime library functions. */ | |
604 | void gfc_build_builtin_function_decls (void); | |
605 | ||
606 | /* Set the backend source location of a decl. */ | |
607 | void gfc_set_decl_location (tree, locus *); | |
608 | ||
609 | /* Get a module symbol backend_decl if possible. */ | |
610 | bool gfc_get_module_backend_decl (gfc_symbol *); | |
611 | ||
612 | /* Return the variable decl for a symbol. */ | |
613 | tree gfc_get_symbol_decl (gfc_symbol *); | |
614 | ||
615 | /* Build a static initializer. */ | |
616 | tree gfc_conv_initializer (gfc_expr *, gfc_typespec *, tree, bool, bool, bool); | |
617 | ||
618 | /* Assign a default initializer to a derived type. */ | |
619 | void gfc_init_default_dt (gfc_symbol *, stmtblock_t *, bool); | |
620 | ||
621 | /* Substitute a temporary variable in place of the real one. */ | |
622 | void gfc_shadow_sym (gfc_symbol *, tree, gfc_saved_var *); | |
623 | ||
624 | /* Restore the original variable. */ | |
625 | void gfc_restore_sym (gfc_symbol *, gfc_saved_var *); | |
626 | ||
627 | /* Setting a decl assembler name, mangling it according to target rules | |
628 | (like Windows @NN decorations). */ | |
629 | void gfc_set_decl_assembler_name (tree, tree); | |
630 | ||
631 | /* Returns true if a variable of specified size should go on the stack. */ | |
632 | int gfc_can_put_var_on_stack (tree); | |
633 | ||
634 | /* Set GFC_DECL_SCALAR_* on decl from sym if needed. */ | |
635 | void gfc_finish_decl_attrs (tree, symbol_attribute *); | |
636 | ||
637 | /* Allocate the lang-specific part of a decl node. */ | |
638 | void gfc_allocate_lang_decl (tree); | |
639 | ||
640 | /* Advance along a TREE_CHAIN. */ | |
641 | tree gfc_advance_chain (tree, int); | |
642 | ||
643 | /* Create a decl for a function. */ | |
644 | void gfc_create_function_decl (gfc_namespace *, bool); | |
645 | /* Generate the code for a function. */ | |
646 | void gfc_generate_function_code (gfc_namespace *); | |
647 | /* Output a BLOCK DATA program unit. */ | |
648 | void gfc_generate_block_data (gfc_namespace *); | |
649 | /* Output a decl for a module variable. */ | |
650 | void gfc_generate_module_vars (gfc_namespace *); | |
651 | /* Get the appropriate return statement for a procedure. */ | |
652 | tree gfc_generate_return (void); | |
653 | ||
654 | struct module_decl_hasher : ggc_ptr_hash<tree_node> | |
655 | { | |
656 | typedef const char *compare_type; | |
657 | ||
658 | static hashval_t hash (tree); | |
659 | static bool equal (tree, const char *); | |
660 | }; | |
661 | ||
662 | struct GTY((for_user)) module_htab_entry { | |
663 | const char *name; | |
664 | tree namespace_decl; | |
665 | hash_table<module_decl_hasher> *GTY (()) decls; | |
666 | }; | |
667 | ||
668 | struct module_htab_entry *gfc_find_module (const char *); | |
669 | void gfc_module_add_decl (struct module_htab_entry *, tree); | |
670 | ||
671 | /* Get and set the current location. */ | |
672 | void gfc_save_backend_locus (locus *); | |
673 | void gfc_set_backend_locus (locus *); | |
674 | void gfc_restore_backend_locus (locus *); | |
675 | ||
676 | /* Handle static constructor functions. */ | |
677 | extern GTY(()) tree gfc_static_ctors; | |
678 | void gfc_generate_constructors (void); | |
679 | ||
680 | /* Get the string length of an array constructor. */ | |
681 | bool get_array_ctor_strlen (stmtblock_t *, gfc_constructor_base, tree *); | |
682 | ||
683 | /* Mark a condition as likely or unlikely. */ | |
684 | tree gfc_likely (tree, enum br_predictor); | |
685 | tree gfc_unlikely (tree, enum br_predictor); | |
686 | ||
687 | /* Return the string length of a deferred character length component. */ | |
688 | bool gfc_deferred_strlen (gfc_component *, tree *); | |
689 | ||
690 | /* Generate a runtime error call. */ | |
691 | tree gfc_trans_runtime_error (bool, locus*, const char*, ...); | |
692 | ||
693 | /* Generate a runtime warning/error check. */ | |
694 | void gfc_trans_runtime_check (bool, bool, tree, stmtblock_t *, locus *, | |
695 | const char *, ...); | |
696 | ||
697 | /* Generate a runtime check for same string length. */ | |
698 | void gfc_trans_same_strlen_check (const char*, locus*, tree, tree, | |
699 | stmtblock_t*); | |
700 | ||
701 | /* Generate a call to free(). */ | |
702 | tree gfc_call_free (tree); | |
703 | ||
704 | /* Allocate memory after performing a few checks. */ | |
705 | tree gfc_call_malloc (stmtblock_t *, tree, tree); | |
706 | ||
707 | /* Build a memcpy call. */ | |
708 | tree gfc_build_memcpy_call (tree, tree, tree); | |
709 | ||
710 | /* Register memory with the coarray library. */ | |
711 | void gfc_allocate_using_caf_lib (stmtblock_t *, tree, tree, tree, tree, tree, | |
712 | tree, gfc_coarray_regtype); | |
713 | ||
714 | /* Allocate memory for allocatable variables, with optional status variable. */ | |
715 | void gfc_allocate_allocatable (stmtblock_t*, tree, tree, tree, tree, | |
716 | tree, tree, tree, gfc_expr*, int); | |
717 | ||
718 | /* Allocate memory, with optional status variable. */ | |
719 | void gfc_allocate_using_malloc (stmtblock_t *, tree, tree, tree); | |
720 | ||
721 | /* Generate code to deallocate an array. */ | |
722 | tree gfc_deallocate_with_status (tree, tree, tree, tree, tree, bool, | |
723 | gfc_expr *, int, tree a = NULL_TREE, | |
724 | tree c = NULL_TREE); | |
725 | tree gfc_deallocate_scalar_with_status (tree, tree, tree, bool, gfc_expr*, | |
726 | gfc_typespec, bool c = false); | |
727 | ||
728 | /* Generate code to call realloc(). */ | |
729 | tree gfc_call_realloc (stmtblock_t *, tree, tree); | |
730 | ||
731 | /* Assign a derived type constructor to a variable. */ | |
732 | tree gfc_trans_structure_assign (tree, gfc_expr *, bool, bool c = false); | |
733 | ||
734 | /* Generate code for an assignment, includes scalarization. */ | |
735 | tree gfc_trans_assignment (gfc_expr *, gfc_expr *, bool, bool, bool p = false, | |
736 | bool a = true); | |
737 | ||
738 | /* Generate code for a pointer assignment. */ | |
739 | tree gfc_trans_pointer_assignment (gfc_expr *, gfc_expr *); | |
740 | ||
741 | /* Initialize function decls for library functions. */ | |
742 | void gfc_build_intrinsic_lib_fndecls (void); | |
743 | /* Create function decls for IO library functions. */ | |
744 | void gfc_build_io_library_fndecls (void); | |
745 | /* Build a function decl for a library function. */ | |
746 | tree gfc_build_library_function_decl (tree, tree, int, ...); | |
747 | tree gfc_build_library_function_decl_with_spec (tree name, const char *spec, | |
748 | tree rettype, int nargs, ...); | |
749 | ||
750 | /* Process the local variable decls of a block construct. */ | |
751 | void gfc_process_block_locals (gfc_namespace*); | |
752 | ||
753 | /* Output initialization/clean-up code that was deferred. */ | |
754 | void gfc_trans_deferred_vars (gfc_symbol*, gfc_wrapped_block *); | |
755 | ||
756 | /* In f95-lang.c. */ | |
757 | tree pushdecl (tree); | |
758 | tree pushdecl_top_level (tree); | |
759 | void pushlevel (void); | |
760 | tree poplevel (int, int); | |
761 | tree getdecls (void); | |
762 | ||
763 | /* In trans-types.c. */ | |
764 | struct array_descr_info; | |
765 | bool gfc_get_array_descr_info (const_tree, struct array_descr_info *); | |
766 | ||
767 | /* In trans-openmp.c */ | |
768 | bool gfc_omp_privatize_by_reference (const_tree); | |
769 | enum omp_clause_default_kind gfc_omp_predetermined_sharing (tree); | |
770 | tree gfc_omp_report_decl (tree); | |
771 | tree gfc_omp_clause_default_ctor (tree, tree, tree); | |
772 | tree gfc_omp_clause_copy_ctor (tree, tree, tree); | |
773 | tree gfc_omp_clause_assign_op (tree, tree, tree); | |
774 | tree gfc_omp_clause_linear_ctor (tree, tree, tree, tree); | |
775 | tree gfc_omp_clause_dtor (tree, tree); | |
776 | void gfc_omp_finish_clause (tree, gimple_seq *); | |
777 | bool gfc_omp_scalar_p (tree); | |
778 | bool gfc_omp_disregard_value_expr (tree, bool); | |
779 | bool gfc_omp_private_debug_clause (tree, bool); | |
780 | bool gfc_omp_private_outer_ref (tree); | |
781 | struct gimplify_omp_ctx; | |
782 | void gfc_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx *, tree); | |
783 | ||
784 | /* Runtime library function decls. */ | |
785 | extern GTY(()) tree gfor_fndecl_pause_numeric; | |
786 | extern GTY(()) tree gfor_fndecl_pause_string; | |
787 | extern GTY(()) tree gfor_fndecl_stop_numeric; | |
788 | extern GTY(()) tree gfor_fndecl_stop_string; | |
789 | extern GTY(()) tree gfor_fndecl_error_stop_numeric; | |
790 | extern GTY(()) tree gfor_fndecl_error_stop_string; | |
791 | extern GTY(()) tree gfor_fndecl_runtime_error; | |
792 | extern GTY(()) tree gfor_fndecl_runtime_error_at; | |
793 | extern GTY(()) tree gfor_fndecl_runtime_warning_at; | |
794 | extern GTY(()) tree gfor_fndecl_os_error; | |
795 | extern GTY(()) tree gfor_fndecl_generate_error; | |
796 | extern GTY(()) tree gfor_fndecl_set_fpe; | |
797 | extern GTY(()) tree gfor_fndecl_set_options; | |
798 | extern GTY(()) tree gfor_fndecl_ttynam; | |
799 | extern GTY(()) tree gfor_fndecl_ctime; | |
800 | extern GTY(()) tree gfor_fndecl_fdate; | |
801 | extern GTY(()) tree gfor_fndecl_in_pack; | |
802 | extern GTY(()) tree gfor_fndecl_in_unpack; | |
803 | extern GTY(()) tree gfor_fndecl_associated; | |
804 | extern GTY(()) tree gfor_fndecl_system_clock4; | |
805 | extern GTY(()) tree gfor_fndecl_system_clock8; | |
806 | ||
807 | ||
808 | /* Coarray run-time library function decls. */ | |
809 | extern GTY(()) tree gfor_fndecl_caf_init; | |
810 | extern GTY(()) tree gfor_fndecl_caf_finalize; | |
811 | extern GTY(()) tree gfor_fndecl_caf_this_image; | |
812 | extern GTY(()) tree gfor_fndecl_caf_num_images; | |
813 | extern GTY(()) tree gfor_fndecl_caf_register; | |
814 | extern GTY(()) tree gfor_fndecl_caf_deregister; | |
815 | extern GTY(()) tree gfor_fndecl_caf_get; | |
816 | extern GTY(()) tree gfor_fndecl_caf_send; | |
817 | extern GTY(()) tree gfor_fndecl_caf_sendget; | |
818 | extern GTY(()) tree gfor_fndecl_caf_get_by_ref; | |
819 | extern GTY(()) tree gfor_fndecl_caf_send_by_ref; | |
820 | extern GTY(()) tree gfor_fndecl_caf_sendget_by_ref; | |
821 | extern GTY(()) tree gfor_fndecl_caf_sync_all; | |
822 | extern GTY(()) tree gfor_fndecl_caf_sync_memory; | |
823 | extern GTY(()) tree gfor_fndecl_caf_sync_images; | |
824 | extern GTY(()) tree gfor_fndecl_caf_stop_numeric; | |
825 | extern GTY(()) tree gfor_fndecl_caf_stop_str; | |
826 | extern GTY(()) tree gfor_fndecl_caf_error_stop; | |
827 | extern GTY(()) tree gfor_fndecl_caf_error_stop_str; | |
828 | extern GTY(()) tree gfor_fndecl_caf_atomic_def; | |
829 | extern GTY(()) tree gfor_fndecl_caf_atomic_ref; | |
830 | extern GTY(()) tree gfor_fndecl_caf_atomic_cas; | |
831 | extern GTY(()) tree gfor_fndecl_caf_atomic_op; | |
832 | extern GTY(()) tree gfor_fndecl_caf_lock; | |
833 | extern GTY(()) tree gfor_fndecl_caf_unlock; | |
834 | extern GTY(()) tree gfor_fndecl_caf_event_post; | |
835 | extern GTY(()) tree gfor_fndecl_caf_event_wait; | |
836 | extern GTY(()) tree gfor_fndecl_caf_event_query; | |
837 | extern GTY(()) tree gfor_fndecl_caf_fail_image; | |
838 | extern GTY(()) tree gfor_fndecl_caf_failed_images; | |
839 | extern GTY(()) tree gfor_fndecl_caf_image_status; | |
840 | extern GTY(()) tree gfor_fndecl_caf_stopped_images; | |
841 | extern GTY(()) tree gfor_fndecl_caf_form_team; | |
842 | extern GTY(()) tree gfor_fndecl_caf_change_team; | |
843 | extern GTY(()) tree gfor_fndecl_caf_end_team; | |
844 | extern GTY(()) tree gfor_fndecl_caf_get_team; | |
845 | extern GTY(()) tree gfor_fndecl_caf_sync_team; | |
846 | extern GTY(()) tree gfor_fndecl_caf_team_number; | |
847 | extern GTY(()) tree gfor_fndecl_co_broadcast; | |
848 | extern GTY(()) tree gfor_fndecl_co_max; | |
849 | extern GTY(()) tree gfor_fndecl_co_min; | |
850 | extern GTY(()) tree gfor_fndecl_co_reduce; | |
851 | extern GTY(()) tree gfor_fndecl_co_sum; | |
852 | extern GTY(()) tree gfor_fndecl_caf_is_present; | |
853 | ||
854 | /* Math functions. Many other math functions are handled in | |
855 | trans-intrinsic.c. */ | |
856 | ||
857 | typedef struct GTY(()) gfc_powdecl_list { | |
858 | tree integer; | |
859 | tree real; | |
860 | tree cmplx; | |
861 | } | |
862 | gfc_powdecl_list; | |
863 | ||
864 | extern GTY(()) gfc_powdecl_list gfor_fndecl_math_powi[4][3]; | |
865 | extern GTY(()) tree gfor_fndecl_math_ishftc4; | |
866 | extern GTY(()) tree gfor_fndecl_math_ishftc8; | |
867 | extern GTY(()) tree gfor_fndecl_math_ishftc16; | |
868 | ||
869 | /* BLAS functions. */ | |
870 | extern GTY(()) tree gfor_fndecl_sgemm; | |
871 | extern GTY(()) tree gfor_fndecl_dgemm; | |
872 | extern GTY(()) tree gfor_fndecl_cgemm; | |
873 | extern GTY(()) tree gfor_fndecl_zgemm; | |
874 | ||
875 | /* String functions. */ | |
876 | extern GTY(()) tree gfor_fndecl_compare_string; | |
877 | extern GTY(()) tree gfor_fndecl_concat_string; | |
878 | extern GTY(()) tree gfor_fndecl_string_len_trim; | |
879 | extern GTY(()) tree gfor_fndecl_string_index; | |
880 | extern GTY(()) tree gfor_fndecl_string_scan; | |
881 | extern GTY(()) tree gfor_fndecl_string_verify; | |
882 | extern GTY(()) tree gfor_fndecl_string_trim; | |
883 | extern GTY(()) tree gfor_fndecl_string_minmax; | |
884 | extern GTY(()) tree gfor_fndecl_adjustl; | |
885 | extern GTY(()) tree gfor_fndecl_adjustr; | |
886 | extern GTY(()) tree gfor_fndecl_select_string; | |
887 | extern GTY(()) tree gfor_fndecl_compare_string_char4; | |
888 | extern GTY(()) tree gfor_fndecl_concat_string_char4; | |
889 | extern GTY(()) tree gfor_fndecl_string_len_trim_char4; | |
890 | extern GTY(()) tree gfor_fndecl_string_index_char4; | |
891 | extern GTY(()) tree gfor_fndecl_string_scan_char4; | |
892 | extern GTY(()) tree gfor_fndecl_string_verify_char4; | |
893 | extern GTY(()) tree gfor_fndecl_string_trim_char4; | |
894 | extern GTY(()) tree gfor_fndecl_string_minmax_char4; | |
895 | extern GTY(()) tree gfor_fndecl_adjustl_char4; | |
896 | extern GTY(()) tree gfor_fndecl_adjustr_char4; | |
897 | extern GTY(()) tree gfor_fndecl_select_string_char4; | |
898 | ||
899 | /* Conversion between character kinds. */ | |
900 | extern GTY(()) tree gfor_fndecl_convert_char1_to_char4; | |
901 | extern GTY(()) tree gfor_fndecl_convert_char4_to_char1; | |
902 | ||
903 | /* Other misc. runtime library functions. */ | |
904 | extern GTY(()) tree gfor_fndecl_size0; | |
905 | extern GTY(()) tree gfor_fndecl_size1; | |
906 | extern GTY(()) tree gfor_fndecl_iargc; | |
907 | extern GTY(()) tree gfor_fndecl_kill; | |
908 | extern GTY(()) tree gfor_fndecl_kill_sub; | |
909 | ||
910 | /* Implemented in Fortran. */ | |
911 | extern GTY(()) tree gfor_fndecl_sc_kind; | |
912 | extern GTY(()) tree gfor_fndecl_si_kind; | |
913 | extern GTY(()) tree gfor_fndecl_sr_kind; | |
914 | ||
915 | /* IEEE-related. */ | |
916 | extern GTY(()) tree gfor_fndecl_ieee_procedure_entry; | |
917 | extern GTY(()) tree gfor_fndecl_ieee_procedure_exit; | |
918 | ||
919 | /* RANDOM_INIT. */ | |
920 | extern GTY(()) tree gfor_fndecl_random_init; | |
921 | ||
922 | /* True if node is an integer constant. */ | |
923 | #define INTEGER_CST_P(node) (TREE_CODE(node) == INTEGER_CST) | |
924 | ||
925 | /* gfortran-specific declaration information, the _CONT versions denote | |
926 | arrays with CONTIGUOUS attribute. */ | |
927 | ||
928 | #define GFC_DTYPE_ELEM_LEN 0 | |
929 | #define GFC_DTYPE_VERSION 1 | |
930 | #define GFC_DTYPE_RANK 2 | |
931 | #define GFC_DTYPE_TYPE 3 | |
932 | #define GFC_DTYPE_ATTRIBUTE 4 | |
933 | ||
934 | enum gfc_array_kind | |
935 | { | |
936 | GFC_ARRAY_UNKNOWN, | |
937 | GFC_ARRAY_ASSUMED_SHAPE, | |
938 | GFC_ARRAY_ASSUMED_SHAPE_CONT, | |
939 | GFC_ARRAY_ASSUMED_RANK, | |
940 | GFC_ARRAY_ASSUMED_RANK_CONT, | |
941 | GFC_ARRAY_ALLOCATABLE, | |
942 | GFC_ARRAY_POINTER, | |
943 | GFC_ARRAY_POINTER_CONT | |
944 | }; | |
945 | ||
946 | /* Array types only. */ | |
947 | struct GTY(()) lang_type { | |
948 | int rank, corank; | |
949 | enum gfc_array_kind akind; | |
950 | tree lbound[GFC_MAX_DIMENSIONS]; | |
951 | tree ubound[GFC_MAX_DIMENSIONS]; | |
952 | tree stride[GFC_MAX_DIMENSIONS]; | |
953 | tree size; | |
954 | tree offset; | |
955 | tree dtype; | |
956 | tree dataptr_type; | |
957 | tree span; | |
958 | tree base_decl[2]; | |
959 | tree nonrestricted_type; | |
960 | tree caf_token; | |
961 | tree caf_offset; | |
962 | }; | |
963 | ||
964 | struct GTY(()) lang_decl { | |
965 | /* Dummy variables. */ | |
966 | tree saved_descriptor; | |
967 | /* Assigned integer nodes. Stringlength is the IO format string's length. | |
968 | Addr is the address of the string or the target label. Stringlength is | |
969 | initialized to -2 and assigned to -1 when addr is assigned to the | |
970 | address of target label. */ | |
971 | tree stringlen; | |
972 | tree addr; | |
973 | tree span; | |
974 | /* For assumed-shape coarrays. */ | |
975 | tree token, caf_offset; | |
976 | unsigned int scalar_allocatable : 1; | |
977 | unsigned int scalar_pointer : 1; | |
978 | }; | |
979 | ||
980 | ||
981 | #define GFC_DECL_ASSIGN_ADDR(node) DECL_LANG_SPECIFIC(node)->addr | |
982 | #define GFC_DECL_STRING_LEN(node) DECL_LANG_SPECIFIC(node)->stringlen | |
983 | #define GFC_DECL_SPAN(node) DECL_LANG_SPECIFIC(node)->span | |
984 | #define GFC_DECL_TOKEN(node) DECL_LANG_SPECIFIC(node)->token | |
985 | #define GFC_DECL_CAF_OFFSET(node) DECL_LANG_SPECIFIC(node)->caf_offset | |
986 | #define GFC_DECL_SAVED_DESCRIPTOR(node) \ | |
987 | (DECL_LANG_SPECIFIC(node)->saved_descriptor) | |
988 | #define GFC_DECL_SCALAR_ALLOCATABLE(node) \ | |
989 | (DECL_LANG_SPECIFIC (node)->scalar_allocatable) | |
990 | #define GFC_DECL_SCALAR_POINTER(node) \ | |
991 | (DECL_LANG_SPECIFIC (node)->scalar_pointer) | |
992 | #define GFC_DECL_GET_SCALAR_ALLOCATABLE(node) \ | |
993 | (DECL_LANG_SPECIFIC (node) ? GFC_DECL_SCALAR_ALLOCATABLE (node) : 0) | |
994 | #define GFC_DECL_GET_SCALAR_POINTER(node) \ | |
995 | (DECL_LANG_SPECIFIC (node) ? GFC_DECL_SCALAR_POINTER (node) : 0) | |
996 | #define GFC_DECL_PACKED_ARRAY(node) DECL_LANG_FLAG_0(node) | |
997 | #define GFC_DECL_PARTIAL_PACKED_ARRAY(node) DECL_LANG_FLAG_1(node) | |
998 | #define GFC_DECL_ASSIGN(node) DECL_LANG_FLAG_2(node) | |
999 | #define GFC_DECL_COMMON_OR_EQUIV(node) DECL_LANG_FLAG_3(node) | |
1000 | #define GFC_DECL_CRAY_POINTEE(node) DECL_LANG_FLAG_4(node) | |
1001 | #define GFC_DECL_RESULT(node) DECL_LANG_FLAG_5(node) | |
1002 | #define GFC_DECL_PTR_ARRAY_P(node) DECL_LANG_FLAG_6(node) | |
1003 | #define GFC_DECL_ASSOCIATE_VAR_P(node) DECL_LANG_FLAG_7(node) | |
1004 | #define GFC_DECL_CLASS(node) DECL_LANG_FLAG_8(node) | |
1005 | ||
1006 | /* An array descriptor. */ | |
1007 | #define GFC_DESCRIPTOR_TYPE_P(node) TYPE_LANG_FLAG_1(node) | |
1008 | /* An array without a descriptor. */ | |
1009 | #define GFC_ARRAY_TYPE_P(node) TYPE_LANG_FLAG_2(node) | |
1010 | /* Fortran CLASS type. */ | |
1011 | #define GFC_CLASS_TYPE_P(node) TYPE_LANG_FLAG_4(node) | |
1012 | /* The GFC_TYPE_ARRAY_* members are present in both descriptor and | |
1013 | descriptorless array types. */ | |
1014 | #define GFC_TYPE_ARRAY_LBOUND(node, dim) \ | |
1015 | (TYPE_LANG_SPECIFIC(node)->lbound[dim]) | |
1016 | #define GFC_TYPE_ARRAY_UBOUND(node, dim) \ | |
1017 | (TYPE_LANG_SPECIFIC(node)->ubound[dim]) | |
1018 | #define GFC_TYPE_ARRAY_STRIDE(node, dim) \ | |
1019 | (TYPE_LANG_SPECIFIC(node)->stride[dim]) | |
1020 | #define GFC_TYPE_ARRAY_RANK(node) (TYPE_LANG_SPECIFIC(node)->rank) | |
1021 | #define GFC_TYPE_ARRAY_CORANK(node) (TYPE_LANG_SPECIFIC(node)->corank) | |
1022 | #define GFC_TYPE_ARRAY_CAF_TOKEN(node) (TYPE_LANG_SPECIFIC(node)->caf_token) | |
1023 | #define GFC_TYPE_ARRAY_CAF_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->caf_offset) | |
1024 | #define GFC_TYPE_ARRAY_SIZE(node) (TYPE_LANG_SPECIFIC(node)->size) | |
1025 | #define GFC_TYPE_ARRAY_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->offset) | |
1026 | #define GFC_TYPE_ARRAY_AKIND(node) (TYPE_LANG_SPECIFIC(node)->akind) | |
1027 | /* Code should use gfc_get_dtype instead of accessing this directly. It may | |
1028 | not be known when the type is created. */ | |
1029 | #define GFC_TYPE_ARRAY_DTYPE(node) (TYPE_LANG_SPECIFIC(node)->dtype) | |
1030 | #define GFC_TYPE_ARRAY_DATAPTR_TYPE(node) \ | |
1031 | (TYPE_LANG_SPECIFIC(node)->dataptr_type) | |
1032 | #define GFC_TYPE_ARRAY_SPAN(node) (TYPE_LANG_SPECIFIC(node)->span) | |
1033 | #define GFC_TYPE_ARRAY_BASE_DECL(node, internal) \ | |
1034 | (TYPE_LANG_SPECIFIC(node)->base_decl[(internal)]) | |
1035 | ||
1036 | ||
1037 | /* Build an expression with void type. */ | |
1038 | #define build1_v(code, arg) \ | |
1039 | fold_build1_loc (input_location, code, void_type_node, arg) | |
1040 | #define build2_v(code, arg1, arg2) \ | |
1041 | fold_build2_loc (input_location, code, void_type_node, arg1, arg2) | |
1042 | #define build3_v(code, arg1, arg2, arg3) \ | |
1043 | fold_build3_loc (input_location, code, void_type_node, arg1, arg2, arg3) | |
1044 | #define build4_v(code, arg1, arg2, arg3, arg4) \ | |
1045 | build4_loc (input_location, code, void_type_node, arg1, arg2, \ | |
1046 | arg3, arg4) | |
1047 | ||
1048 | /* This group of functions allows a caller to evaluate an expression from | |
1049 | the callee's interface. It establishes a mapping between the interface's | |
1050 | dummy arguments and the caller's actual arguments, then applies that | |
1051 | mapping to a given gfc_expr. | |
1052 | ||
1053 | You can initialize a mapping structure like so: | |
1054 | ||
1055 | gfc_interface_mapping mapping; | |
1056 | ... | |
1057 | gfc_init_interface_mapping (&mapping); | |
1058 | ||
1059 | You should then evaluate each actual argument into a temporary | |
1060 | gfc_se structure, here called "se", and map the result to the | |
1061 | dummy argument's symbol, here called "sym": | |
1062 | ||
1063 | gfc_add_interface_mapping (&mapping, sym, &se); | |
1064 | ||
1065 | After adding all mappings, you should call: | |
1066 | ||
1067 | gfc_finish_interface_mapping (&mapping, pre, post); | |
1068 | ||
1069 | where "pre" and "post" are statement blocks for initialization | |
1070 | and finalization code respectively. You can then evaluate an | |
1071 | interface expression "expr" as follows: | |
1072 | ||
1073 | gfc_apply_interface_mapping (&mapping, se, expr); | |
1074 | ||
1075 | Once you've evaluated all expressions, you should free | |
1076 | the mapping structure with: | |
1077 | ||
1078 | gfc_free_interface_mapping (&mapping); */ | |
1079 | ||
1080 | ||
1081 | /* This structure represents a mapping from OLD to NEW, where OLD is a | |
1082 | dummy argument symbol and NEW is a symbol that represents the value | |
1083 | of an actual argument. Mappings are linked together using NEXT | |
1084 | (in no particular order). */ | |
1085 | typedef struct gfc_interface_sym_mapping | |
1086 | { | |
1087 | struct gfc_interface_sym_mapping *next; | |
1088 | gfc_symbol *old; | |
1089 | gfc_symtree *new_sym; | |
1090 | gfc_expr *expr; | |
1091 | } | |
1092 | gfc_interface_sym_mapping; | |
1093 | ||
1094 | ||
1095 | /* This structure is used by callers to evaluate an expression from | |
1096 | a callee's interface. */ | |
1097 | typedef struct gfc_interface_mapping | |
1098 | { | |
1099 | /* Maps the interface's dummy arguments to the values that the caller | |
1100 | is passing. The whole list is owned by this gfc_interface_mapping. */ | |
1101 | gfc_interface_sym_mapping *syms; | |
1102 | ||
1103 | /* A list of gfc_charlens that were needed when creating copies of | |
1104 | expressions. The whole list is owned by this gfc_interface_mapping. */ | |
1105 | gfc_charlen *charlens; | |
1106 | } | |
1107 | gfc_interface_mapping; | |
1108 | ||
1109 | void gfc_init_interface_mapping (gfc_interface_mapping *); | |
1110 | void gfc_free_interface_mapping (gfc_interface_mapping *); | |
1111 | void gfc_add_interface_mapping (gfc_interface_mapping *, | |
1112 | gfc_symbol *, gfc_se *, gfc_expr *); | |
1113 | void gfc_finish_interface_mapping (gfc_interface_mapping *, | |
1114 | stmtblock_t *, stmtblock_t *); | |
1115 | void gfc_apply_interface_mapping (gfc_interface_mapping *, | |
1116 | gfc_se *, gfc_expr *); | |
1117 | ||
1118 | ||
1119 | /* Standard error messages used in all the trans-*.c files. */ | |
1120 | extern const char gfc_msg_fault[]; | |
1121 | extern const char gfc_msg_wrong_return[]; | |
1122 | ||
1123 | #define OMPWS_WORKSHARE_FLAG 1 /* Set if in a workshare construct. */ | |
1124 | #define OMPWS_CURR_SINGLEUNIT 2 /* Set if current gfc_code in workshare | |
1125 | construct is not workshared. */ | |
1126 | #define OMPWS_SCALARIZER_WS 4 /* Set if scalarizer should attempt | |
1127 | to create parallel loops. */ | |
1128 | #define OMPWS_SCALARIZER_BODY 8 /* Set if handling body of potential | |
1129 | parallel loop. */ | |
1130 | #define OMPWS_NOWAIT 16 /* Use NOWAIT on OMP_FOR. */ | |
1131 | extern int ompws_flags; | |
1132 | ||
1133 | #endif /* GFC_TRANS_H */ |