1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
|
/* Header for code translation functions
Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Free Software
Foundation, Inc.
Contributed by Paul Brook
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef GFC_TRANS_H
#define GFC_TRANS_H
/* Mangled symbols take the form __module__name. */
#define GFC_MAX_MANGLED_SYMBOL_LEN (GFC_MAX_SYMBOL_LEN*2+4)
/* Struct for holding a block of statements. It should be treated as an
opaque entity and not modified directly. This allows us to change the
underlying representation of statement lists. */
typedef struct
{
tree head;
unsigned int has_scope:1;
}
stmtblock_t;
/* a simplified expression */
typedef struct gfc_se
{
/* Code blocks to be executed before and after using the value. */
stmtblock_t pre;
stmtblock_t post;
/* the result of the expression */
tree expr;
/* The length of a character string value. */
tree string_length;
/* If set gfc_conv_variable will return an expression for the array
descriptor. When set, want_pointer should also be set.
If not set scalarizing variables will be substituted. */
unsigned descriptor_only:1;
/* When this is set gfc_conv_expr returns the address of a variable. Only
applies to EXPR_VARIABLE nodes.
Also used by gfc_conv_array_parameter. When set this indicates a pointer
to the descriptor should be returned, rather than the descriptor itself.
*/
unsigned want_pointer:1;
/* An array function call returning without a temporary. Also used for array
pointer assignments. */
unsigned direct_byref:1;
/* Ignore absent optional arguments. Used for some intrinsics. */
unsigned ignore_optional:1;
/* When this is set the data and offset fields of the returned descriptor
are NULL. Used by intrinsic size. */
unsigned data_not_needed:1;
/* If set, gfc_conv_function_call does not put byref calls into se->pre. */
unsigned no_function_call:1;
/* Scalarization parameters. */
struct gfc_se *parent;
struct gfc_ss *ss;
struct gfc_loopinfo *loop;
}
gfc_se;
/* Scalarization State chain. Created by walking an expression tree before
creating the scalarization loops. Then passed as part of a gfc_se structure
to translate the expression inside the loop. Note that these chains are
terminated by gfc_se_terminator, not NULL. A NULL pointer in a gfc_se
indicates to gfc_conv_* that this is a scalar expression.
Note that some member arrays correspond to scalarizer rank and others
are the variable rank. */
typedef struct gfc_ss_info
{
int dimen;
/* The ref that holds information on this section. */
gfc_ref *ref;
/* The descriptor of this array. */
tree descriptor;
/* holds the pointer to the data array. */
tree data;
/* To move some of the array index calculation out of the innermost loop. */
tree offset;
tree saved_offset;
tree stride0;
/* Holds the SS for a subscript. Indexed by actual dimension. */
struct gfc_ss *subscript[GFC_MAX_DIMENSIONS];
/* stride and delta are used to access this inside a scalarization loop.
start is used in the calculation of these. Indexed by scalarizer
dimension. */
tree start[GFC_MAX_DIMENSIONS];
tree end[GFC_MAX_DIMENSIONS];
tree stride[GFC_MAX_DIMENSIONS];
tree delta[GFC_MAX_DIMENSIONS];
/* Translation from scalarizer dimensions to actual dimensions.
actual = dim[scalarizer] */
int dim[GFC_MAX_DIMENSIONS];
}
gfc_ss_info;
typedef enum
{
/* A scalar value. This will be evaluated before entering the
scalarization loop. */
GFC_SS_SCALAR,
/* Like GFC_SS_SCALAR except it evaluates a pointer to the expression.
Used for elemental function parameters. */
GFC_SS_REFERENCE,
/* An array section. Scalarization indices will be substituted during
expression translation. */
GFC_SS_SECTION,
/* A non-elemental function call returning an array. The call is executed
before entering the scalarization loop, storing the result in a
temporary. This temporary is then used inside the scalarization loop.
Simple assignments, eg. a(:) = fn() are handles without a temporary
as a special case. */
GFC_SS_FUNCTION,
/* An array constructor. The current implementation is sub-optimal in
many cases. It allocated a temporary, assigns the values to it, then
uses this temporary inside the scalarization loop. */
GFC_SS_CONSTRUCTOR,
/* A vector subscript. The vector's descriptor is cached in the
"descriptor" field of the associated gfc_ss_info. */
GFC_SS_VECTOR,
/* A temporary array allocated by the scalarizer. Its rank can be less
than that of the assignment expression. */
GFC_SS_TEMP,
/* An intrinsic function call. Many intrinsic functions which map directly
to library calls are created as GFC_SS_FUNCTION nodes. */
GFC_SS_INTRINSIC,
/* A component of a derived type. */
GFC_SS_COMPONENT
}
gfc_ss_type;
/* SS structures can only belong to a single loopinfo. They must be added
otherwise they will not get freed. */
typedef struct gfc_ss
{
gfc_ss_type type;
gfc_expr *expr;
mpz_t *shape;
tree string_length;
union
{
/* If type is GFC_SS_SCALAR or GFC_SS_REFERENCE. */
struct
{
tree expr;
}
scalar;
/* GFC_SS_TEMP. */
struct
{
/* The rank of the temporary. May be less than the rank of the
assigned expression. */
int dimen;
tree type;
}
temp;
/* All other types. */
gfc_ss_info info;
}
data;
/* All the SS in a loop and linked through loop_chain. The SS for an
expression are linked by the next pointer. */
struct gfc_ss *loop_chain;
struct gfc_ss *next;
/* This is used by assignments requiring temporaries. The bits specify which
loops the terms appear in. This will be 1 for the RHS expressions,
2 for the LHS expressions, and 3(=1|2) for the temporary. */
unsigned useflags:2;
}
gfc_ss;
#define gfc_get_ss() gfc_getmem(sizeof(gfc_ss))
/* The contents of this aren't actually used. A NULL SS chain indicates a
scalar expression, so this pointer is used to terminate SS chains. */
extern gfc_ss * const gfc_ss_terminator;
/* Holds information about an expression while it is being scalarized. */
typedef struct gfc_loopinfo
{
stmtblock_t pre;
stmtblock_t post;
int dimen;
/* All the SS involved with this loop. */
gfc_ss *ss;
/* The SS describing the temporary used in an assignment. */
gfc_ss *temp_ss;
/* The scalarization loop index variables. */
tree loopvar[GFC_MAX_DIMENSIONS];
/* The bounds of the scalarization loops. */
tree from[GFC_MAX_DIMENSIONS];
tree to[GFC_MAX_DIMENSIONS];
gfc_ss *specloop[GFC_MAX_DIMENSIONS];
/* The code member contains the code for the body of the next outer loop. */
stmtblock_t code[GFC_MAX_DIMENSIONS];
/* Order in which the dimensions should be looped, innermost first. */
int order[GFC_MAX_DIMENSIONS];
/* The number of dimensions for which a temporary is used. */
int temp_dim;
/* If set we don't need the loop variables. */
unsigned array_parameter:1;
}
gfc_loopinfo;
/* Information about a symbol that has been shadowed by a temporary. */
typedef struct
{
symbol_attribute attr;
tree decl;
}
gfc_saved_var;
/* Advance the SS chain to the next term. */
void gfc_advance_se_ss_chain (gfc_se *);
/* Call this to initialize a gfc_se structure before use
first parameter is structure to initialize, second is
parent to get scalarization data from, or NULL. */
void gfc_init_se (gfc_se *, gfc_se *);
/* Create an artificial variable decl and add it to the current scope. */
tree gfc_create_var (tree, const char *);
/* Like above but doesn't add it to the current scope. */
tree gfc_create_var_np (tree, const char *);
/* Store the result of an expression in a temp variable so it can be used
repeatedly even if the original changes */
void gfc_make_safe_expr (gfc_se * se);
/* Makes sure se is suitable for passing as a function string parameter. */
void gfc_conv_string_parameter (gfc_se * se);
/* Compare two strings. */
tree gfc_build_compare_string (tree, tree, tree, tree);
/* Add an item to the end of TREE_LIST. */
tree gfc_chainon_list (tree, tree);
/* When using the gfc_conv_* make sure you understand what they do, i.e.
when a POST chain may be created, and what the returned expression may be
used for. Note that character strings have special handling. This
should not be a problem as most statements/operations only deal with
numeric/logical types. See the implementations in trans-expr.c
for details of the individual functions. */
void gfc_conv_expr (gfc_se * se, gfc_expr * expr);
void gfc_conv_expr_val (gfc_se * se, gfc_expr * expr);
void gfc_conv_expr_lhs (gfc_se * se, gfc_expr * expr);
void gfc_conv_expr_reference (gfc_se * se, gfc_expr *);
void gfc_conv_expr_type (gfc_se * se, gfc_expr *, tree);
/* trans-expr.c */
void gfc_conv_scalar_char_value (gfc_symbol *sym, gfc_se *se, gfc_expr **expr);
/* Find the decl containing the auxiliary variables for assigned variables. */
void gfc_conv_label_variable (gfc_se * se, gfc_expr * expr);
/* If the value is not constant, Create a temporary and copy the value. */
tree gfc_evaluate_now (tree, stmtblock_t *);
/* Intrinsic function handling. */
void gfc_conv_intrinsic_function (gfc_se *, gfc_expr *);
/* Does an intrinsic map directly to an external library call. */
int gfc_is_intrinsic_libcall (gfc_expr *);
/* Used to call the elemental subroutines used in operator assignments. */
tree gfc_conv_operator_assign (gfc_se *, gfc_se *, gfc_symbol *);
/* Also used to CALL subroutines. */
int gfc_conv_function_call (gfc_se *, gfc_symbol *, gfc_actual_arglist *,
tree);
void gfc_conv_subref_array_arg (gfc_se *, gfc_expr *, int, sym_intent);
/* gfc_trans_* shouldn't call push/poplevel, use gfc_push/pop_scope */
/* Generate code for a scalar assignment. */
tree gfc_trans_scalar_assign (gfc_se *, gfc_se *, gfc_typespec, bool, bool);
/* Translate COMMON blocks. */
void gfc_trans_common (gfc_namespace *);
/* Translate a derived type constructor. */
void gfc_conv_structure (gfc_se *, gfc_expr *, int);
/* Return an expression which determines if a dummy parameter is present. */
tree gfc_conv_expr_present (gfc_symbol *);
/* Convert a missing, dummy argument into a null or zero. */
void gfc_conv_missing_dummy (gfc_se *, gfc_expr *, gfc_typespec);
/* Generate code to allocate a string temporary. */
tree gfc_conv_string_tmp (gfc_se *, tree, tree);
/* Get the string length variable belonging to an expression. */
tree gfc_get_expr_charlen (gfc_expr *);
/* Initialize a string length variable. */
void gfc_conv_string_length (gfc_charlen *, stmtblock_t *);
/* Ensure type sizes can be gimplified. */
void gfc_trans_vla_type_sizes (gfc_symbol *, stmtblock_t *);
/* Add an expression to the end of a block. */
void gfc_add_expr_to_block (stmtblock_t *, tree);
/* Add a block to the end of a block. */
void gfc_add_block_to_block (stmtblock_t *, stmtblock_t *);
/* Add a MODIFY_EXPR or a GIMPLE_MODIFY_STMT to a block. */
void gfc_add_modify (stmtblock_t *, tree, tree, bool);
#define gfc_add_modify_expr(BLOCK, LHS, RHS) \
gfc_add_modify ((BLOCK), (LHS), (RHS), false)
#define gfc_add_modify_stmt(BLOCK, LHS, RHS) \
gfc_add_modify ((BLOCK), (LHS), (RHS), true)
/* Initialize a statement block. */
void gfc_init_block (stmtblock_t *);
/* Start a new statement block. Like gfc_init_block but also starts a new
variable scope. */
void gfc_start_block (stmtblock_t *);
/* Finish a statement block. Also closes the scope if the block was created
with gfc_start_block. */
tree gfc_finish_block (stmtblock_t *);
/* Merge the scope of a block with its parent. */
void gfc_merge_block_scope (stmtblock_t * block);
/* Return the backend label decl. */
tree gfc_get_label_decl (gfc_st_label *);
/* Return the decl for an external function. */
tree gfc_get_extern_function_decl (gfc_symbol *);
/* Return the decl for a function. */
tree gfc_get_function_decl (gfc_symbol *);
/* Build an ADDR_EXPR. */
tree gfc_build_addr_expr (tree, tree);
/* Build an ARRAY_REF. */
tree gfc_build_array_ref (tree, tree, tree);
/* Creates a label. Decl is artificial if label_id == NULL_TREE. */
tree gfc_build_label_decl (tree);
/* Return the decl used to hold the function return value.
Do not use if the function has an explicit result variable. */
tree gfc_get_fake_result_decl (gfc_symbol *, int);
/* Get the return label for the current function. */
tree gfc_get_return_label (void);
/* Add a decl to the binding level for the current function. */
void gfc_add_decl_to_function (tree);
/* Make prototypes for runtime library functions. */
void gfc_build_builtin_function_decls (void);
/* Set the backend source location of a decl. */
void gfc_set_decl_location (tree, locus *);
/* Return the variable decl for a symbol. */
tree gfc_get_symbol_decl (gfc_symbol *);
/* Build a static initializer. */
tree gfc_conv_initializer (gfc_expr *, gfc_typespec *, tree, bool, bool);
/* Substitute a temporary variable in place of the real one. */
void gfc_shadow_sym (gfc_symbol *, tree, gfc_saved_var *);
/* Restore the original variable. */
void gfc_restore_sym (gfc_symbol *, gfc_saved_var *);
/* Returns true if a variable of specified size should go on the stack. */
int gfc_can_put_var_on_stack (tree);
/* Allocate the lang-specific part of a decl node. */
void gfc_allocate_lang_decl (tree);
/* Advance along a TREE_CHAIN. */
tree gfc_advance_chain (tree, int);
/* Create a decl for a function. */
void gfc_create_function_decl (gfc_namespace *);
/* Generate the code for a function. */
void gfc_generate_function_code (gfc_namespace *);
/* Output a BLOCK DATA program unit. */
void gfc_generate_block_data (gfc_namespace *);
/* Output a decl for a module variable. */
void gfc_generate_module_vars (gfc_namespace *);
/* Get and set the current location. */
void gfc_set_backend_locus (locus *);
void gfc_get_backend_locus (locus *);
/* Handle static constructor functions. */
extern GTY(()) tree gfc_static_ctors;
void gfc_generate_constructors (void);
/* Get the string length of an array constructor. */
bool get_array_ctor_strlen (stmtblock_t *, gfc_constructor *, tree *);
/* Generate a runtime error check. */
void gfc_trans_runtime_check (tree, stmtblock_t *, locus *, const char *, ...);
/* Generate a call to free() after checking that its arg is non-NULL. */
tree gfc_call_free (tree);
/* Allocate memory after performing a few checks. */
tree gfc_call_malloc (stmtblock_t *, tree, tree);
/* Allocate memory for arrays, with optional status variable. */
tree gfc_allocate_array_with_status (stmtblock_t *, tree, tree, tree);
/* Allocate memory, with optional status variable. */
tree gfc_allocate_with_status (stmtblock_t *, tree, tree);
/* Generate code to deallocate an array. */
tree gfc_deallocate_with_status (tree, tree, bool);
/* Generate code to call realloc(). */
tree gfc_call_realloc (stmtblock_t *, tree, tree);
/* Generate code for an assignment, includes scalarization. */
tree gfc_trans_assignment (gfc_expr *, gfc_expr *, bool);
/* Generate code for a pointer assignment. */
tree gfc_trans_pointer_assignment (gfc_expr *, gfc_expr *);
/* Initialize function decls for library functions. */
void gfc_build_intrinsic_lib_fndecls (void);
/* Create function decls for IO library functions. */
void gfc_trans_io_runtime_check (tree, tree, int, const char *, stmtblock_t *);
void gfc_build_io_library_fndecls (void);
/* Build a function decl for a library function. */
tree gfc_build_library_function_decl (tree, tree, int, ...);
/* somewhere! */
tree pushdecl (tree);
tree pushdecl_top_level (tree);
void pushlevel (int);
tree poplevel (int, int, int);
tree getdecls (void);
tree gfc_truthvalue_conversion (tree);
tree gfc_builtin_function (tree);
/* In trans-openmp.c */
bool gfc_omp_privatize_by_reference (const_tree);
enum omp_clause_default_kind gfc_omp_predetermined_sharing (tree);
tree gfc_omp_clause_default_ctor (tree, tree);
bool gfc_omp_disregard_value_expr (tree, bool);
bool gfc_omp_private_debug_clause (tree, bool);
struct gimplify_omp_ctx;
void gfc_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx *, tree);
/* Runtime library function decls. */
extern GTY(()) tree gfor_fndecl_pause_numeric;
extern GTY(()) tree gfor_fndecl_pause_string;
extern GTY(()) tree gfor_fndecl_stop_numeric;
extern GTY(()) tree gfor_fndecl_stop_string;
extern GTY(()) tree gfor_fndecl_select_string;
extern GTY(()) tree gfor_fndecl_runtime_error;
extern GTY(()) tree gfor_fndecl_runtime_error_at;
extern GTY(()) tree gfor_fndecl_os_error;
extern GTY(()) tree gfor_fndecl_generate_error;
extern GTY(()) tree gfor_fndecl_set_fpe;
extern GTY(()) tree gfor_fndecl_set_options;
extern GTY(()) tree gfor_fndecl_ttynam;
extern GTY(()) tree gfor_fndecl_ctime;
extern GTY(()) tree gfor_fndecl_fdate;
extern GTY(()) tree gfor_fndecl_in_pack;
extern GTY(()) tree gfor_fndecl_in_unpack;
extern GTY(()) tree gfor_fndecl_associated;
/* Math functions. Many other math functions are handled in
trans-intrinsic.c. */
typedef struct gfc_powdecl_list GTY(())
{
tree integer;
tree real;
tree cmplx;
}
gfc_powdecl_list;
extern GTY(()) gfc_powdecl_list gfor_fndecl_math_powi[4][3];
extern GTY(()) tree gfor_fndecl_math_cpowf;
extern GTY(()) tree gfor_fndecl_math_cpow;
extern GTY(()) tree gfor_fndecl_math_cpowl10;
extern GTY(()) tree gfor_fndecl_math_cpowl16;
extern GTY(()) tree gfor_fndecl_math_ishftc4;
extern GTY(()) tree gfor_fndecl_math_ishftc8;
extern GTY(()) tree gfor_fndecl_math_ishftc16;
extern GTY(()) tree gfor_fndecl_math_exponent4;
extern GTY(()) tree gfor_fndecl_math_exponent8;
extern GTY(()) tree gfor_fndecl_math_exponent10;
extern GTY(()) tree gfor_fndecl_math_exponent16;
/* BLAS functions. */
extern GTY(()) tree gfor_fndecl_sgemm;
extern GTY(()) tree gfor_fndecl_dgemm;
extern GTY(()) tree gfor_fndecl_cgemm;
extern GTY(()) tree gfor_fndecl_zgemm;
/* String functions. */
extern GTY(()) tree gfor_fndecl_compare_string;
extern GTY(()) tree gfor_fndecl_concat_string;
extern GTY(()) tree gfor_fndecl_string_len_trim;
extern GTY(()) tree gfor_fndecl_string_index;
extern GTY(()) tree gfor_fndecl_string_scan;
extern GTY(()) tree gfor_fndecl_string_verify;
extern GTY(()) tree gfor_fndecl_string_trim;
extern GTY(()) tree gfor_fndecl_string_minmax;
extern GTY(()) tree gfor_fndecl_adjustl;
extern GTY(()) tree gfor_fndecl_adjustr;
/* Other misc. runtime library functions. */
extern GTY(()) tree gfor_fndecl_size0;
extern GTY(()) tree gfor_fndecl_size1;
extern GTY(()) tree gfor_fndecl_iargc;
/* Implemented in FORTRAN. */
extern GTY(()) tree gfor_fndecl_si_kind;
extern GTY(()) tree gfor_fndecl_sr_kind;
/* True if node is an integer constant. */
#define INTEGER_CST_P(node) (TREE_CODE(node) == INTEGER_CST)
/* G95-specific declaration information. */
/* Array types only. */
struct lang_type GTY(())
{
int rank;
tree lbound[GFC_MAX_DIMENSIONS];
tree ubound[GFC_MAX_DIMENSIONS];
tree stride[GFC_MAX_DIMENSIONS];
tree size;
tree offset;
tree dtype;
tree dataptr_type;
};
struct lang_decl GTY(())
{
/* Dummy variables. */
tree saved_descriptor;
/* Assigned integer nodes. Stringlength is the IO format string's length.
Addr is the address of the string or the target label. Stringlength is
initialized to -2 and assigned to -1 when addr is assigned to the
address of target label. */
tree stringlen;
tree addr;
tree span;
};
#define GFC_DECL_ASSIGN_ADDR(node) DECL_LANG_SPECIFIC(node)->addr
#define GFC_DECL_STRING_LEN(node) DECL_LANG_SPECIFIC(node)->stringlen
#define GFC_DECL_SPAN(node) DECL_LANG_SPECIFIC(node)->span
#define GFC_DECL_SAVED_DESCRIPTOR(node) \
(DECL_LANG_SPECIFIC(node)->saved_descriptor)
#define GFC_DECL_PACKED_ARRAY(node) DECL_LANG_FLAG_0(node)
#define GFC_DECL_PARTIAL_PACKED_ARRAY(node) DECL_LANG_FLAG_1(node)
#define GFC_DECL_ASSIGN(node) DECL_LANG_FLAG_2(node)
#define GFC_DECL_COMMON_OR_EQUIV(node) DECL_LANG_FLAG_3(node)
#define GFC_DECL_CRAY_POINTEE(node) DECL_LANG_FLAG_4(node)
#define GFC_DECL_RESULT(node) DECL_LANG_FLAG_5(node)
#define GFC_DECL_SUBREF_ARRAY_P(node) DECL_LANG_FLAG_6(node)
/* An array descriptor. */
#define GFC_DESCRIPTOR_TYPE_P(node) TYPE_LANG_FLAG_1(node)
/* An array without a descriptor. */
#define GFC_ARRAY_TYPE_P(node) TYPE_LANG_FLAG_2(node)
/* Fortran POINTER type. */
#define GFC_POINTER_TYPE_P(node) TYPE_LANG_FLAG_3(node)
/* The GFC_TYPE_ARRAY_* members are present in both descriptor and
descriptorless array types. */
#define GFC_TYPE_ARRAY_LBOUND(node, dim) \
(TYPE_LANG_SPECIFIC(node)->lbound[dim])
#define GFC_TYPE_ARRAY_UBOUND(node, dim) \
(TYPE_LANG_SPECIFIC(node)->ubound[dim])
#define GFC_TYPE_ARRAY_STRIDE(node, dim) \
(TYPE_LANG_SPECIFIC(node)->stride[dim])
#define GFC_TYPE_ARRAY_RANK(node) (TYPE_LANG_SPECIFIC(node)->rank)
#define GFC_TYPE_ARRAY_SIZE(node) (TYPE_LANG_SPECIFIC(node)->size)
#define GFC_TYPE_ARRAY_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->offset)
/* Code should use gfc_get_dtype instead of accesig this directly. It may
not be known when the type is created. */
#define GFC_TYPE_ARRAY_DTYPE(node) (TYPE_LANG_SPECIFIC(node)->dtype)
#define GFC_TYPE_ARRAY_DATAPTR_TYPE(node) \
(TYPE_LANG_SPECIFIC(node)->dataptr_type)
/* Build an expression with void type. */
#define build1_v(code, arg) build1(code, void_type_node, arg)
#define build2_v(code, arg1, arg2) build2(code, void_type_node, \
arg1, arg2)
#define build3_v(code, arg1, arg2, arg3) build3(code, void_type_node, \
arg1, arg2, arg3)
#define build4_v(code, arg1, arg2, arg3, arg4) build4(code, void_type_node, \
arg1, arg2, arg3, arg4)
/* This group of functions allows a caller to evaluate an expression from
the callee's interface. It establishes a mapping between the interface's
dummy arguments and the caller's actual arguments, then applies that
mapping to a given gfc_expr.
You can initialize a mapping structure like so:
gfc_interface_mapping mapping;
...
gfc_init_interface_mapping (&mapping);
You should then evaluate each actual argument into a temporary
gfc_se structure, here called "se", and map the result to the
dummy argument's symbol, here called "sym":
gfc_add_interface_mapping (&mapping, sym, &se);
After adding all mappings, you should call:
gfc_finish_interface_mapping (&mapping, pre, post);
where "pre" and "post" are statement blocks for initialization
and finalization code respectively. You can then evaluate an
interface expression "expr" as follows:
gfc_apply_interface_mapping (&mapping, se, expr);
Once you've evaluated all expressions, you should free
the mapping structure with:
gfc_free_interface_mapping (&mapping); */
/* This structure represents a mapping from OLD to NEW, where OLD is a
dummy argument symbol and NEW is a symbol that represents the value
of an actual argument. Mappings are linked together using NEXT
(in no particular order). */
typedef struct gfc_interface_sym_mapping
{
struct gfc_interface_sym_mapping *next;
gfc_symbol *old;
gfc_symtree *new;
}
gfc_interface_sym_mapping;
/* This structure is used by callers to evaluate an expression from
a callee's interface. */
typedef struct gfc_interface_mapping
{
/* Maps the interface's dummy arguments to the values that the caller
is passing. The whole list is owned by this gfc_interface_mapping. */
gfc_interface_sym_mapping *syms;
/* A list of gfc_charlens that were needed when creating copies of
expressions. The whole list is owned by this gfc_interface_mapping. */
gfc_charlen *charlens;
}
gfc_interface_mapping;
void gfc_init_interface_mapping (gfc_interface_mapping *);
void gfc_free_interface_mapping (gfc_interface_mapping *);
void gfc_add_interface_mapping (gfc_interface_mapping *,
gfc_symbol *, gfc_se *);
void gfc_finish_interface_mapping (gfc_interface_mapping *,
stmtblock_t *, stmtblock_t *);
void gfc_apply_interface_mapping (gfc_interface_mapping *,
gfc_se *, gfc_expr *);
/* Standard error messages used in all the trans-*.c files. */
extern const char gfc_msg_bounds[];
extern const char gfc_msg_fault[];
extern const char gfc_msg_wrong_return[];
#endif /* GFC_TRANS_H */
|