1 /* Header for code translation functions
2 Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
3 Contributed by Paul Brook
5 This file is part of GCC.
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 2, or (at your option) any later
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
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
25 /* Mangled symbols take the form __module__name. */
26 #define GFC_MAX_MANGLED_SYMBOL_LEN (GFC_MAX_SYMBOL_LEN*2+4)
28 /* Struct for holding a block of statements. It should be treated as an
29 opaque entity and not modified directly. This allows us to change the
30 underlying representation of statement lists. */
34 unsigned int has_scope
:1;
38 /* a simplified expression */
41 /* Code blocks to be executed before and after using the value. */
45 /* the result of the expression */
48 /* The length of a character string value. */
51 /* If set gfc_conv_variable will return an expression for the array
52 descriptor. When set, want_pointer should also be set.
53 If not set scalarizing variables will be substituted. */
54 unsigned descriptor_only
:1;
56 /* When this is set gfc_conv_expr returns the address of a variable. Only
57 applies to EXPR_VARIABLE nodes.
58 Also used by gfc_conv_array_parameter. When set this indicates a pointer
59 to the descriptor should be returned, rather than the descriptor itself.
61 unsigned want_pointer
:1;
63 /* An array function call returning without a temporary. Also used for array
64 pointer assignments. */
65 unsigned direct_byref
:1;
67 /* Ignore absent optional arguments. Used for some intrinsics. */
68 unsigned ignore_optional
:1;
70 /* When this is set the data and offset fields of the returned descriptor
71 are NULL. Used by intrinsic size. */
72 unsigned data_not_needed
:1;
74 /* Scalarization parameters. */
75 struct gfc_se
*parent
;
77 struct gfc_loopinfo
*loop
;
82 /* Scalarization State chain. Created by walking an expression tree before
83 creating the scalarization loops. Then passed as part of a gfc_se structure
84 to translate the expression inside the loop. Note that these chains are
85 terminated by gfc_se_terminator, not NULL. A NULL pointer in a gfc_se
86 indicates to gfc_conv_* that this is a scalar expression.
87 Note that some member arrays correspond to scalarizer rank and others
88 are the variable rank. */
90 typedef struct gfc_ss_info
93 /* The ref that holds information on this section. */
95 /* The descriptor of this array. */
97 /* holds the pointer to the data array. */
99 /* To move some of the array index calculation out of the innermost loop. */
103 /* Holds the SS for a subscript. Indexed by actual dimension. */
104 struct gfc_ss
*subscript
[GFC_MAX_DIMENSIONS
];
106 /* stride and delta are used to access this inside a scalarization loop.
107 start is used in the calculation of these. Indexed by scalarizer
109 tree start
[GFC_MAX_DIMENSIONS
];
110 tree stride
[GFC_MAX_DIMENSIONS
];
111 tree delta
[GFC_MAX_DIMENSIONS
];
113 /* Translation from scalarizer dimensions to actual dimensions.
114 actual = dim[scalarizer] */
115 int dim
[GFC_MAX_DIMENSIONS
];
121 /* A scalar value. This will be evaluated before entering the
122 scalarization loop. */
125 /* Like GFC_SS_SCALAR except it evaluates a pointer to the expression.
126 Used for elemental function parameters. */
129 /* An array section. Scalarization indices will be substituted during
130 expression translation. */
133 /* A non-elemental function call returning an array. The call is executed
134 before entering the scalarization loop, storing the result in a
135 temporary. This temporary is then used inside the scalarization loop.
136 Simple assignments, eg. a(:) = fn() are handles without a temporary
137 as a special case. */
140 /* An array constructor. The current implementation is sub-optimal in
141 many cases. It allocated a temporary, assigns the values to it, then
142 uses this temporary inside the scalarization loop. */
145 /* A vector subscript. The vector's descriptor is cached in the
146 "descriptor" field of the associated gfc_ss_info. */
149 /* A temporary array allocated by the scalarizer. Its rank can be less
150 than that of the assignment expression. */
153 /* An intrinsic function call. Many intrinsic functions which map directly
154 to library calls are created as GFC_SS_FUNCTION nodes. */
157 /* A component of a derived type. */
162 /* SS structures can only belong to a single loopinfo. They must be added
163 otherwise they will not get freed. */
164 typedef struct gfc_ss
172 /* If type is GFC_SS_SCALAR or GFC_SS_REFERENCE. */
182 /* The rank of the temporary. May be less than the rank of the
183 assigned expression. */
188 /* All other types. */
193 /* All the SS in a loop and linked through loop_chain. The SS for an
194 expression are linked by the next pointer. */
195 struct gfc_ss
*loop_chain
;
198 /* This is used by assignments requiring temporaries. The bits specify which
199 loops the terms appear in. This will be 1 for the RHS expressions,
200 2 for the LHS expressions, and 3(=1|2) for the temporary. */
204 #define gfc_get_ss() gfc_getmem(sizeof(gfc_ss))
206 /* The contents of this aren't actually used. A NULL SS chain indicates a
207 scalar expression, so this pointer is used to terminate SS chains. */
208 extern gfc_ss
* const gfc_ss_terminator
;
210 /* Holds information about an expression while it is being scalarized. */
211 typedef struct gfc_loopinfo
218 /* All the SS involved with this loop. */
220 /* The SS describing the temporary used in an assignment. */
223 /* The scalarization loop index variables. */
224 tree loopvar
[GFC_MAX_DIMENSIONS
];
226 /* The bounds of the scalarization loops. */
227 tree from
[GFC_MAX_DIMENSIONS
];
228 tree to
[GFC_MAX_DIMENSIONS
];
229 gfc_ss
*specloop
[GFC_MAX_DIMENSIONS
];
231 /* The code member contains the code for the body of the next outer loop. */
232 stmtblock_t code
[GFC_MAX_DIMENSIONS
];
234 /* Order in which the dimensions should be looped, innermost first. */
235 int order
[GFC_MAX_DIMENSIONS
];
237 /* The number of dimensions for which a temporary is used. */
240 /* If set we don't need the loop variables. */
241 unsigned array_parameter
:1;
246 /* Information about a symbol that has been shadowed by a temporary. */
249 symbol_attribute attr
;
255 /* Advance the SS chain to the next term. */
256 void gfc_advance_se_ss_chain (gfc_se
*);
258 /* Call this to initialize a gfc_se structure before use
259 first parameter is structure to initialize, second is
260 parent to get scalarization data from, or NULL. */
261 void gfc_init_se (gfc_se
*, gfc_se
*);
263 /* Create an artificial variable decl and add it to the current scope. */
264 tree
gfc_create_var (tree
, const char *);
265 /* Like above but doesn't add it to the current scope. */
266 tree
gfc_create_var_np (tree
, const char *);
268 /* Store the result of an expression in a temp variable so it can be used
269 repeatedly even if the original changes */
270 void gfc_make_safe_expr (gfc_se
* se
);
272 /* Makes sure se is suitable for passing as a function string parameter. */
273 void gfc_conv_string_parameter (gfc_se
* se
);
275 /* Compare two strings. */
276 tree
gfc_build_compare_string (tree
, tree
, tree
, tree
);
278 /* Add an item to the end of TREE_LIST. */
279 tree
gfc_chainon_list (tree
, tree
);
281 /* When using the gfc_conv_* make sure you understand what they do, i.e.
282 when a POST chain may be created, and what the returned expression may be
283 used for. Note that character strings have special handling. This
284 should not be a problem as most statements/operations only deal with
285 numeric/logical types. See the implementations in trans-expr.c
286 for details of the individual functions. */
288 void gfc_conv_expr (gfc_se
* se
, gfc_expr
* expr
);
289 void gfc_conv_expr_val (gfc_se
* se
, gfc_expr
* expr
);
290 void gfc_conv_expr_lhs (gfc_se
* se
, gfc_expr
* expr
);
291 void gfc_conv_expr_reference (gfc_se
* se
, gfc_expr
*);
292 void gfc_conv_expr_type (gfc_se
* se
, gfc_expr
*, tree
);
294 /* Find the decl containing the auxiliary variables for assigned variables. */
295 void gfc_conv_label_variable (gfc_se
* se
, gfc_expr
* expr
);
296 /* If the value is not constant, Create a temporary and copy the value. */
297 tree
gfc_evaluate_now (tree
, stmtblock_t
*);
299 /* Intrinsic function handling. */
300 void gfc_conv_intrinsic_function (gfc_se
*, gfc_expr
*);
302 /* Does an intrinsic map directly to an external library call. */
303 int gfc_is_intrinsic_libcall (gfc_expr
*);
305 /* Also used to CALL subroutines. */
306 int gfc_conv_function_call (gfc_se
*, gfc_symbol
*, gfc_actual_arglist
*);
307 /* gfc_trans_* shouldn't call push/poplevel, use gfc_push/pop_scope */
309 /* Generate code for a scalar assignment. */
310 tree
gfc_trans_scalar_assign (gfc_se
*, gfc_se
*, bt
);
312 /* Translate COMMON blocks. */
313 void gfc_trans_common (gfc_namespace
*);
315 /* Translate a derived type constructor. */
316 void gfc_conv_structure (gfc_se
*, gfc_expr
*, int);
318 /* Return an expression which determines if a dummy parameter is present. */
319 tree
gfc_conv_expr_present (gfc_symbol
*);
320 /* Convert a missing, dummy argument into a null or zero. */
321 void gfc_conv_missing_dummy (gfc_se
*, gfc_expr
*, gfc_typespec
);
323 /* Generate code to allocate a string temporary. */
324 tree
gfc_conv_string_tmp (gfc_se
*, tree
, tree
);
325 /* Get the string length variable belonging to an expression. */
326 tree
gfc_get_expr_charlen (gfc_expr
*);
327 /* Initialize a string length variable. */
328 void gfc_trans_init_string_length (gfc_charlen
*, stmtblock_t
*);
329 /* Ensure type sizes can be gimplified. */
330 void gfc_trans_vla_type_sizes (gfc_symbol
*, stmtblock_t
*);
332 /* Add an expression to the end of a block. */
333 void gfc_add_expr_to_block (stmtblock_t
*, tree
);
334 /* Add a block to the end of a block. */
335 void gfc_add_block_to_block (stmtblock_t
*, stmtblock_t
*);
336 /* Add a MODIFY_EXPR to a block. */
337 void gfc_add_modify_expr (stmtblock_t
*, tree
, tree
);
339 /* Initialize a statement block. */
340 void gfc_init_block (stmtblock_t
*);
341 /* Start a new statement block. Like gfc_init_block but also starts a new
343 void gfc_start_block (stmtblock_t
*);
344 /* Finish a statement block. Also closes the scope if the block was created
345 with gfc_start_block. */
346 tree
gfc_finish_block (stmtblock_t
*);
347 /* Merge the scope of a block with its parent. */
348 void gfc_merge_block_scope (stmtblock_t
* block
);
350 /* Return the backend label decl. */
351 tree
gfc_get_label_decl (gfc_st_label
*);
353 /* Return the decl for an external function. */
354 tree
gfc_get_extern_function_decl (gfc_symbol
*);
356 /* Return the decl for a function. */
357 tree
gfc_get_function_decl (gfc_symbol
*);
359 /* Build an ADDR_EXPR. */
360 tree
gfc_build_addr_expr (tree
, tree
);
362 /* Build an ARRAY_REF. */
363 tree
gfc_build_array_ref (tree
, tree
);
365 /* Creates a label. Decl is artificial if label_id == NULL_TREE. */
366 tree
gfc_build_label_decl (tree
);
368 /* Return the decl used to hold the function return value.
369 Do not use if the function has an explicit result variable. */
370 tree
gfc_get_fake_result_decl (gfc_symbol
*, int);
372 /* Get the return label for the current function. */
373 tree
gfc_get_return_label (void);
375 /* Add a decl to the binding level for the current function. */
376 void gfc_add_decl_to_function (tree
);
378 /* Make prototypes for runtime library functions. */
379 void gfc_build_builtin_function_decls (void);
381 /* Set the backend source location of a decl. */
382 void gfc_set_decl_location (tree
, locus
*);
384 /* Return the variable decl for a symbol. */
385 tree
gfc_get_symbol_decl (gfc_symbol
*);
387 /* Build a static initializer. */
388 tree
gfc_conv_initializer (gfc_expr
*, gfc_typespec
*, tree
, bool, bool);
390 /* Substitute a temporary variable in place of the real one. */
391 void gfc_shadow_sym (gfc_symbol
*, tree
, gfc_saved_var
*);
393 /* Restore the original variable. */
394 void gfc_restore_sym (gfc_symbol
*, gfc_saved_var
*);
396 /* Returns true if a variable of specified size should go on the stack. */
397 int gfc_can_put_var_on_stack (tree
);
399 /* Allocate the lang-specific part of a decl node. */
400 void gfc_allocate_lang_decl (tree
);
402 /* Advance along a TREE_CHAIN. */
403 tree
gfc_advance_chain (tree
, int);
405 /* Create a decl for a function. */
406 void gfc_create_function_decl (gfc_namespace
*);
407 /* Generate the code for a function. */
408 void gfc_generate_function_code (gfc_namespace
*);
409 /* Output a BLOCK DATA program unit. */
410 void gfc_generate_block_data (gfc_namespace
*);
411 /* Output a decl for a module variable. */
412 void gfc_generate_module_vars (gfc_namespace
*);
414 /* Get and set the current location. */
415 void gfc_set_backend_locus (locus
*);
416 void gfc_get_backend_locus (locus
*);
418 /* Handle static constructor functions. */
419 extern GTY(()) tree gfc_static_ctors
;
420 void gfc_generate_constructors (void);
422 /* Get the string length of an array constructor. */
423 bool get_array_ctor_strlen (gfc_constructor
*, tree
*);
425 /* Generate a runtime error check. */
426 void gfc_trans_runtime_check (tree
, const char *, stmtblock_t
*, locus
*);
428 /* Generate code for an assignment, includes scalarization. */
429 tree
gfc_trans_assignment (gfc_expr
*, gfc_expr
*);
431 /* Generate code for a pointer assignment. */
432 tree
gfc_trans_pointer_assignment (gfc_expr
*, gfc_expr
*);
434 /* Initialize function decls for library functions. */
435 void gfc_build_intrinsic_lib_fndecls (void);
436 /* Create function decls for IO library functions. */
437 void gfc_build_io_library_fndecls (void);
438 /* Build a function decl for a library function. */
439 tree
gfc_build_library_function_decl (tree
, tree
, int, ...);
442 tree
pushdecl (tree
);
443 tree
pushdecl_top_level (tree
);
444 void pushlevel (int);
445 tree
poplevel (int, int, int);
446 tree
getdecls (void);
447 tree
gfc_truthvalue_conversion (tree
);
448 tree
builtin_function (const char *, tree
, int, enum built_in_class
,
451 /* In trans-openmp.c */
452 bool gfc_omp_privatize_by_reference (tree
);
453 enum omp_clause_default_kind
gfc_omp_predetermined_sharing (tree
);
454 bool gfc_omp_disregard_value_expr (tree
, bool);
455 bool gfc_omp_private_debug_clause (tree
, bool);
456 struct gimplify_omp_ctx
;
457 void gfc_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx
*, tree
);
459 /* Runtime library function decls. */
460 extern GTY(()) tree gfor_fndecl_internal_malloc
;
461 extern GTY(()) tree gfor_fndecl_internal_malloc64
;
462 extern GTY(()) tree gfor_fndecl_internal_realloc
;
463 extern GTY(()) tree gfor_fndecl_internal_realloc64
;
464 extern GTY(()) tree gfor_fndecl_internal_free
;
465 extern GTY(()) tree gfor_fndecl_allocate
;
466 extern GTY(()) tree gfor_fndecl_allocate64
;
467 extern GTY(()) tree gfor_fndecl_allocate_array
;
468 extern GTY(()) tree gfor_fndecl_allocate64_array
;
469 extern GTY(()) tree gfor_fndecl_deallocate
;
470 extern GTY(()) tree gfor_fndecl_pause_numeric
;
471 extern GTY(()) tree gfor_fndecl_pause_string
;
472 extern GTY(()) tree gfor_fndecl_stop_numeric
;
473 extern GTY(()) tree gfor_fndecl_stop_string
;
474 extern GTY(()) tree gfor_fndecl_select_string
;
475 extern GTY(()) tree gfor_fndecl_runtime_error
;
476 extern GTY(()) tree gfor_fndecl_set_fpe
;
477 extern GTY(()) tree gfor_fndecl_set_std
;
478 extern GTY(()) tree gfor_fndecl_ttynam
;
479 extern GTY(()) tree gfor_fndecl_ctime
;
480 extern GTY(()) tree gfor_fndecl_fdate
;
481 extern GTY(()) tree gfor_fndecl_in_pack
;
482 extern GTY(()) tree gfor_fndecl_in_unpack
;
483 extern GTY(()) tree gfor_fndecl_associated
;
485 /* Math functions. Many other math functions are handled in
486 trans-intrinsic.c. */
488 typedef struct gfc_powdecl_list
GTY(())
496 extern GTY(()) gfc_powdecl_list gfor_fndecl_math_powi
[4][3];
497 extern GTY(()) tree gfor_fndecl_math_cpowf
;
498 extern GTY(()) tree gfor_fndecl_math_cpow
;
499 extern GTY(()) tree gfor_fndecl_math_cpowl10
;
500 extern GTY(()) tree gfor_fndecl_math_cpowl16
;
501 extern GTY(()) tree gfor_fndecl_math_ishftc4
;
502 extern GTY(()) tree gfor_fndecl_math_ishftc8
;
503 extern GTY(()) tree gfor_fndecl_math_ishftc16
;
504 extern GTY(()) tree gfor_fndecl_math_exponent4
;
505 extern GTY(()) tree gfor_fndecl_math_exponent8
;
506 extern GTY(()) tree gfor_fndecl_math_exponent10
;
507 extern GTY(()) tree gfor_fndecl_math_exponent16
;
509 /* String functions. */
510 extern GTY(()) tree gfor_fndecl_copy_string
;
511 extern GTY(()) tree gfor_fndecl_compare_string
;
512 extern GTY(()) tree gfor_fndecl_concat_string
;
513 extern GTY(()) tree gfor_fndecl_string_len_trim
;
514 extern GTY(()) tree gfor_fndecl_string_index
;
515 extern GTY(()) tree gfor_fndecl_string_scan
;
516 extern GTY(()) tree gfor_fndecl_string_verify
;
517 extern GTY(()) tree gfor_fndecl_string_trim
;
518 extern GTY(()) tree gfor_fndecl_string_repeat
;
519 extern GTY(()) tree gfor_fndecl_adjustl
;
520 extern GTY(()) tree gfor_fndecl_adjustr
;
522 /* Other misc. runtime library functions. */
523 extern GTY(()) tree gfor_fndecl_size0
;
524 extern GTY(()) tree gfor_fndecl_size1
;
525 extern GTY(()) tree gfor_fndecl_iargc
;
527 /* Implemented in FORTRAN. */
528 extern GTY(()) tree gfor_fndecl_si_kind
;
529 extern GTY(()) tree gfor_fndecl_sr_kind
;
532 /* True if node is an integer constant. */
533 #define INTEGER_CST_P(node) (TREE_CODE(node) == INTEGER_CST)
535 /* G95-specific declaration information. */
537 /* Array types only. */
538 struct lang_type
GTY(())
541 tree lbound
[GFC_MAX_DIMENSIONS
];
542 tree ubound
[GFC_MAX_DIMENSIONS
];
543 tree stride
[GFC_MAX_DIMENSIONS
];
550 struct lang_decl
GTY(())
552 /* Dummy variables. */
553 tree saved_descriptor
;
554 /* Assigned integer nodes. Stringlength is the IO format string's length.
555 Addr is the address of the string or the target label. Stringlength is
556 initialized to -2 and assigned to -1 when addr is assigned to the
557 address of target label. */
563 #define GFC_DECL_ASSIGN_ADDR(node) DECL_LANG_SPECIFIC(node)->addr
564 #define GFC_DECL_STRING_LEN(node) DECL_LANG_SPECIFIC(node)->stringlen
565 #define GFC_DECL_SAVED_DESCRIPTOR(node) \
566 (DECL_LANG_SPECIFIC(node)->saved_descriptor)
567 #define GFC_DECL_PACKED_ARRAY(node) DECL_LANG_FLAG_0(node)
568 #define GFC_DECL_PARTIAL_PACKED_ARRAY(node) DECL_LANG_FLAG_1(node)
569 #define GFC_DECL_ASSIGN(node) DECL_LANG_FLAG_2(node)
570 #define GFC_DECL_COMMON_OR_EQUIV(node) DECL_LANG_FLAG_3(node)
571 #define GFC_DECL_CRAY_POINTEE(node) DECL_LANG_FLAG_4(node)
572 #define GFC_DECL_RESULT(node) DECL_LANG_FLAG_5(node)
574 /* An array descriptor. */
575 #define GFC_DESCRIPTOR_TYPE_P(node) TYPE_LANG_FLAG_1(node)
576 /* An array without a descriptor. */
577 #define GFC_ARRAY_TYPE_P(node) TYPE_LANG_FLAG_2(node)
578 /* The GFC_TYPE_ARRAY_* members are present in both descriptor and
579 descriptorless array types. */
580 #define GFC_TYPE_ARRAY_LBOUND(node, dim) \
581 (TYPE_LANG_SPECIFIC(node)->lbound[dim])
582 #define GFC_TYPE_ARRAY_UBOUND(node, dim) \
583 (TYPE_LANG_SPECIFIC(node)->ubound[dim])
584 #define GFC_TYPE_ARRAY_STRIDE(node, dim) \
585 (TYPE_LANG_SPECIFIC(node)->stride[dim])
586 #define GFC_TYPE_ARRAY_RANK(node) (TYPE_LANG_SPECIFIC(node)->rank)
587 #define GFC_TYPE_ARRAY_SIZE(node) (TYPE_LANG_SPECIFIC(node)->size)
588 #define GFC_TYPE_ARRAY_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->offset)
589 /* Code should use gfc_get_dtype instead of accesig this directly. It may
590 not be known when the type is created. */
591 #define GFC_TYPE_ARRAY_DTYPE(node) (TYPE_LANG_SPECIFIC(node)->dtype)
592 #define GFC_TYPE_ARRAY_DATAPTR_TYPE(node) \
593 (TYPE_LANG_SPECIFIC(node)->dataptr_type)
595 /* I changed this from sorry(...) because it should not return. */
596 /* TODO: Remove gfc_todo_error before releasing version 1.0. */
597 #define gfc_todo_error(args...) fatal_error("gfc_todo: Not Implemented: " args)
599 /* Build an expression with void type. */
600 #define build1_v(code, arg) build1(code, void_type_node, arg)
601 #define build2_v(code, arg1, arg2) build2(code, void_type_node, \
603 #define build3_v(code, arg1, arg2, arg3) build3(code, void_type_node, \
605 #define build4_v(code, arg1, arg2, arg3, arg4) build4(code, void_type_node, \
606 arg1, arg2, arg3, arg4)
608 /* This group of functions allows a caller to evaluate an expression from
609 the callee's interface. It establishes a mapping between the interface's
610 dummy arguments and the caller's actual arguments, then applies that
611 mapping to a given gfc_expr.
613 You can initialize a mapping structure like so:
615 gfc_interface_mapping mapping;
617 gfc_init_interface_mapping (&mapping);
619 You should then evaluate each actual argument into a temporary
620 gfc_se structure, here called "se", and map the result to the
621 dummy argument's symbol, here called "sym":
623 gfc_add_interface_mapping (&mapping, sym, &se);
625 After adding all mappings, you should call:
627 gfc_finish_interface_mapping (&mapping, pre, post);
629 where "pre" and "post" are statement blocks for initialization
630 and finalization code respectively. You can then evaluate an
631 interface expression "expr" as follows:
633 gfc_apply_interface_mapping (&mapping, se, expr);
635 Once you've evaluated all expressions, you should free
636 the mapping structure with:
638 gfc_free_interface_mapping (&mapping); */
641 /* This structure represents a mapping from OLD to NEW, where OLD is a
642 dummy argument symbol and NEW is a symbol that represents the value
643 of an actual argument. Mappings are linked together using NEXT
644 (in no particular order). */
645 typedef struct gfc_interface_sym_mapping
647 struct gfc_interface_sym_mapping
*next
;
651 gfc_interface_sym_mapping
;
654 /* This structure is used by callers to evaluate an expression from
655 a callee's interface. */
656 typedef struct gfc_interface_mapping
658 /* Maps the interface's dummy arguments to the values that the caller
659 is passing. The whole list is owned by this gfc_interface_mapping. */
660 gfc_interface_sym_mapping
*syms
;
662 /* A list of gfc_charlens that were needed when creating copies of
663 expressions. The whole list is owned by this gfc_interface_mapping. */
664 gfc_charlen
*charlens
;
666 gfc_interface_mapping
;
668 void gfc_init_interface_mapping (gfc_interface_mapping
*);
669 void gfc_free_interface_mapping (gfc_interface_mapping
*);
670 void gfc_add_interface_mapping (gfc_interface_mapping
*,
671 gfc_symbol
*, gfc_se
*);
672 void gfc_finish_interface_mapping (gfc_interface_mapping
*,
673 stmtblock_t
*, stmtblock_t
*);
674 void gfc_apply_interface_mapping (gfc_interface_mapping
*,
675 gfc_se
*, gfc_expr
*);
678 /* Standard error messages used in all the trans-*.c files. */
679 extern char gfc_msg_bounds
[];
680 extern char gfc_msg_fault
[];
681 extern char gfc_msg_wrong_return
[];
684 #endif /* GFC_TRANS_H */