1 /* Header for code translation functions
2 Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
3 Free Software Foundation, Inc.
4 Contributed by Paul Brook
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
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 /* If direct_byref is set, do work out the descriptor as in that case but
68 do still create a new descriptor variable instead of using an
69 existing one. This is useful for special pointer assignments like
70 rank remapping where we have to process the descriptor before
71 assigning to final one. */
72 unsigned byref_noassign
:1;
74 /* Ignore absent optional arguments. Used for some intrinsics. */
75 unsigned ignore_optional
:1;
77 /* When this is set the data and offset fields of the returned descriptor
78 are NULL. Used by intrinsic size. */
79 unsigned data_not_needed
:1;
81 /* If set, gfc_conv_procedure_call does not put byref calls into se->pre. */
82 unsigned no_function_call
:1;
84 /* If set, we will force the creation of a temporary. Useful to disable
85 non-copying procedure argument passing optimizations, when some function
89 /* Scalarization parameters. */
90 struct gfc_se
*parent
;
92 struct gfc_loopinfo
*loop
;
97 /* Scalarization State chain. Created by walking an expression tree before
98 creating the scalarization loops. Then passed as part of a gfc_se structure
99 to translate the expression inside the loop. Note that these chains are
100 terminated by gfc_se_terminator, not NULL. A NULL pointer in a gfc_se
101 indicates to gfc_conv_* that this is a scalar expression.
102 Note that some member arrays correspond to scalarizer rank and others
103 are the variable rank. */
105 typedef struct gfc_ss_info
108 /* The ref that holds information on this section. */
110 /* The descriptor of this array. */
112 /* holds the pointer to the data array. */
114 /* To move some of the array index calculation out of the innermost loop. */
118 /* Holds the SS for a subscript. Indexed by actual dimension. */
119 struct gfc_ss
*subscript
[GFC_MAX_DIMENSIONS
];
121 /* stride and delta are used to access this inside a scalarization loop.
122 start is used in the calculation of these. Indexed by scalarizer
124 tree start
[GFC_MAX_DIMENSIONS
];
125 tree end
[GFC_MAX_DIMENSIONS
];
126 tree stride
[GFC_MAX_DIMENSIONS
];
127 tree delta
[GFC_MAX_DIMENSIONS
];
129 /* Translation from loop dimensions to actual dimensions.
130 actual_dim = dim[loop_dim] */
131 int dim
[GFC_MAX_DIMENSIONS
];
137 /* A scalar value. This will be evaluated before entering the
138 scalarization loop. */
141 /* Like GFC_SS_SCALAR it evaluates the expression outside the
142 loop. Is always evaluated as a reference to the temporary.
143 Used for elemental function arguments. */
146 /* An array section. Scalarization indices will be substituted during
147 expression translation. */
150 /* A non-elemental function call returning an array. The call is executed
151 before entering the scalarization loop, storing the result in a
152 temporary. This temporary is then used inside the scalarization loop.
153 Simple assignments, e.g. a(:) = fn(), are handled without a temporary
154 as a special case. */
157 /* An array constructor. The current implementation is sub-optimal in
158 many cases. It allocated a temporary, assigns the values to it, then
159 uses this temporary inside the scalarization loop. */
162 /* A vector subscript. The vector's descriptor is cached in the
163 "descriptor" field of the associated gfc_ss_info. */
166 /* A temporary array allocated by the scalarizer. Its rank can be less
167 than that of the assignment expression. */
170 /* An intrinsic function call. Many intrinsic functions which map directly
171 to library calls are created as GFC_SS_FUNCTION nodes. */
174 /* A component of a derived type. */
179 /* SS structures can only belong to a single loopinfo. They must be added
180 otherwise they will not get freed. */
181 typedef struct gfc_ss
189 /* If type is GFC_SS_SCALAR or GFC_SS_REFERENCE. */
199 /* The rank of the temporary. May be less than the rank of the
200 assigned expression. */
205 /* All other types. */
210 /* All the SS in a loop and linked through loop_chain. The SS for an
211 expression are linked by the next pointer. */
212 struct gfc_ss
*loop_chain
;
215 /* This is used by assignments requiring temporaries. The bits specify which
216 loops the terms appear in. This will be 1 for the RHS expressions,
217 2 for the LHS expressions, and 3(=1|2) for the temporary. The bit
218 'where' suppresses precalculation of scalars in WHERE assignments. */
219 unsigned useflags
:2, where
:1;
222 #define gfc_get_ss() XCNEW (gfc_ss)
224 /* The contents of this aren't actually used. A NULL SS chain indicates a
225 scalar expression, so this pointer is used to terminate SS chains. */
226 extern gfc_ss
* const gfc_ss_terminator
;
228 /* Holds information about an expression while it is being scalarized. */
229 typedef struct gfc_loopinfo
236 /* All the SS involved with this loop. */
238 /* The SS describing the temporary used in an assignment. */
241 /* The scalarization loop index variables. */
242 tree loopvar
[GFC_MAX_DIMENSIONS
];
244 /* The bounds of the scalarization loops. */
245 tree from
[GFC_MAX_DIMENSIONS
];
246 tree to
[GFC_MAX_DIMENSIONS
];
247 gfc_ss
*specloop
[GFC_MAX_DIMENSIONS
];
249 /* The code member contains the code for the body of the next outer loop. */
250 stmtblock_t code
[GFC_MAX_DIMENSIONS
];
252 /* Order in which the dimensions should be looped, innermost first. */
253 int order
[GFC_MAX_DIMENSIONS
];
255 /* Enum to control loop reversal. */
256 gfc_reverse reverse
[GFC_MAX_DIMENSIONS
];
258 /* The number of dimensions for which a temporary is used. */
261 /* If set we don't need the loop variables. */
262 unsigned array_parameter
:1;
267 /* Information about a symbol that has been shadowed by a temporary. */
270 symbol_attribute attr
;
276 /* Store information about a block of code together with special
277 initialization and clean-up code. This can be used to incrementally add
278 init and cleanup, and in the end put everything together to a
279 try-finally expression. */
289 /* Initialize an init/cleanup block. */
290 void gfc_start_wrapped_block (gfc_wrapped_block
* block
, tree code
);
291 /* Add a pair of init/cleanup code to the block. Each one might be a
292 NULL_TREE if not required. */
293 void gfc_add_init_cleanup (gfc_wrapped_block
* block
, tree init
, tree cleanup
);
294 /* Finalize the block, that is, create a single expression encapsulating the
295 original code together with init and clean-up code. */
296 tree
gfc_finish_wrapped_block (gfc_wrapped_block
* block
);
299 /* Advance the SS chain to the next term. */
300 void gfc_advance_se_ss_chain (gfc_se
*);
302 /* Call this to initialize a gfc_se structure before use
303 first parameter is structure to initialize, second is
304 parent to get scalarization data from, or NULL. */
305 void gfc_init_se (gfc_se
*, gfc_se
*);
307 /* Create an artificial variable decl and add it to the current scope. */
308 tree
gfc_create_var (tree
, const char *);
309 /* Like above but doesn't add it to the current scope. */
310 tree
gfc_create_var_np (tree
, const char *);
312 /* Store the result of an expression in a temp variable so it can be used
313 repeatedly even if the original changes */
314 void gfc_make_safe_expr (gfc_se
* se
);
316 /* Makes sure se is suitable for passing as a function string parameter. */
317 void gfc_conv_string_parameter (gfc_se
* se
);
319 /* Compare two strings. */
320 tree
gfc_build_compare_string (tree
, tree
, tree
, tree
, int, enum tree_code
);
322 /* Add an item to the end of TREE_LIST. */
323 tree
gfc_chainon_list (tree
, tree
);
325 /* When using the gfc_conv_* make sure you understand what they do, i.e.
326 when a POST chain may be created, and what the returned expression may be
327 used for. Note that character strings have special handling. This
328 should not be a problem as most statements/operations only deal with
329 numeric/logical types. See the implementations in trans-expr.c
330 for details of the individual functions. */
332 void gfc_conv_expr (gfc_se
* se
, gfc_expr
* expr
);
333 void gfc_conv_expr_val (gfc_se
* se
, gfc_expr
* expr
);
334 void gfc_conv_expr_lhs (gfc_se
* se
, gfc_expr
* expr
);
335 void gfc_conv_expr_reference (gfc_se
* se
, gfc_expr
*);
336 void gfc_conv_expr_type (gfc_se
* se
, gfc_expr
*, tree
);
339 void gfc_conv_scalar_char_value (gfc_symbol
*sym
, gfc_se
*se
, gfc_expr
**expr
);
340 tree
gfc_string_to_single_character (tree len
, tree str
, int kind
);
342 /* Find the decl containing the auxiliary variables for assigned variables. */
343 void gfc_conv_label_variable (gfc_se
* se
, gfc_expr
* expr
);
344 /* If the value is not constant, Create a temporary and copy the value. */
345 tree
gfc_evaluate_now (tree
, stmtblock_t
*);
347 /* Find the appropriate variant of a math intrinsic. */
348 tree
gfc_builtin_decl_for_float_kind (enum built_in_function
, int);
350 /* Intrinsic function handling. */
351 void gfc_conv_intrinsic_function (gfc_se
*, gfc_expr
*);
353 /* Is the intrinsic expanded inline. */
354 bool gfc_inline_intrinsic_function_p (gfc_expr
*);
356 /* Does an intrinsic map directly to an external library call
357 This is true for array-returning intrinsics, unless
358 gfc_inline_intrinsic_function_p returns true. */
359 int gfc_is_intrinsic_libcall (gfc_expr
*);
361 tree
gfc_conv_intrinsic_move_alloc (gfc_code
*);
363 /* Used to call ordinary functions/subroutines
364 and procedure pointer components. */
365 int gfc_conv_procedure_call (gfc_se
*, gfc_symbol
*, gfc_actual_arglist
*,
366 gfc_expr
*, VEC(tree
,gc
) *);
368 void gfc_conv_subref_array_arg (gfc_se
*, gfc_expr
*, int, sym_intent
, bool);
370 /* gfc_trans_* shouldn't call push/poplevel, use gfc_push/pop_scope */
372 /* Generate code for a scalar assignment. */
373 tree
gfc_trans_scalar_assign (gfc_se
*, gfc_se
*, gfc_typespec
, bool, bool,
376 /* Translate COMMON blocks. */
377 void gfc_trans_common (gfc_namespace
*);
379 /* Translate a derived type constructor. */
380 void gfc_conv_structure (gfc_se
*, gfc_expr
*, int);
382 /* Return an expression which determines if a dummy parameter is present. */
383 tree
gfc_conv_expr_present (gfc_symbol
*);
384 /* Convert a missing, dummy argument into a null or zero. */
385 void gfc_conv_missing_dummy (gfc_se
*, gfc_expr
*, gfc_typespec
, int);
387 /* Generate code to allocate a string temporary. */
388 tree
gfc_conv_string_tmp (gfc_se
*, tree
, tree
);
389 /* Get the string length variable belonging to an expression. */
390 tree
gfc_get_expr_charlen (gfc_expr
*);
391 /* Initialize a string length variable. */
392 void gfc_conv_string_length (gfc_charlen
*, gfc_expr
*, stmtblock_t
*);
393 /* Ensure type sizes can be gimplified. */
394 void gfc_trans_vla_type_sizes (gfc_symbol
*, stmtblock_t
*);
396 /* Add an expression to the end of a block. */
397 void gfc_add_expr_to_block (stmtblock_t
*, tree
);
398 /* Add a block to the end of a block. */
399 void gfc_add_block_to_block (stmtblock_t
*, stmtblock_t
*);
400 /* Add a MODIFY_EXPR to a block. */
401 void gfc_add_modify (stmtblock_t
*, tree
, tree
);
403 /* Initialize a statement block. */
404 void gfc_init_block (stmtblock_t
*);
405 /* Start a new statement block. Like gfc_init_block but also starts a new
407 void gfc_start_block (stmtblock_t
*);
408 /* Finish a statement block. Also closes the scope if the block was created
409 with gfc_start_block. */
410 tree
gfc_finish_block (stmtblock_t
*);
411 /* Merge the scope of a block with its parent. */
412 void gfc_merge_block_scope (stmtblock_t
* block
);
414 /* Return the backend label decl. */
415 tree
gfc_get_label_decl (gfc_st_label
*);
417 /* Return the decl for an external function. */
418 tree
gfc_get_extern_function_decl (gfc_symbol
*);
420 /* Return the decl for a function. */
421 tree
gfc_get_function_decl (gfc_symbol
*);
423 /* Build an ADDR_EXPR. */
424 tree
gfc_build_addr_expr (tree
, tree
);
426 /* Build an ARRAY_REF. */
427 tree
gfc_build_array_ref (tree
, tree
, tree
);
429 /* Creates a label. Decl is artificial if label_id == NULL_TREE. */
430 tree
gfc_build_label_decl (tree
);
432 /* Return the decl used to hold the function return value.
433 Do not use if the function has an explicit result variable. */
434 tree
gfc_get_fake_result_decl (gfc_symbol
*, int);
436 /* Add a decl to the binding level for the current function. */
437 void gfc_add_decl_to_function (tree
);
439 /* Make prototypes for runtime library functions. */
440 void gfc_build_builtin_function_decls (void);
442 /* Set the backend source location of a decl. */
443 void gfc_set_decl_location (tree
, locus
*);
445 /* Return the variable decl for a symbol. */
446 tree
gfc_get_symbol_decl (gfc_symbol
*);
448 /* Build a static initializer. */
449 tree
gfc_conv_initializer (gfc_expr
*, gfc_typespec
*, tree
, bool, bool, bool);
451 /* Assign a default initializer to a derived type. */
452 void gfc_init_default_dt (gfc_symbol
*, stmtblock_t
*, bool);
454 /* Substitute a temporary variable in place of the real one. */
455 void gfc_shadow_sym (gfc_symbol
*, tree
, gfc_saved_var
*);
457 /* Restore the original variable. */
458 void gfc_restore_sym (gfc_symbol
*, gfc_saved_var
*);
460 /* Setting a decl assembler name, mangling it according to target rules
461 (like Windows @NN decorations). */
462 void gfc_set_decl_assembler_name (tree
, tree
);
464 /* Returns true if a variable of specified size should go on the stack. */
465 int gfc_can_put_var_on_stack (tree
);
467 /* Allocate the lang-specific part of a decl node. */
468 void gfc_allocate_lang_decl (tree
);
470 /* Advance along a TREE_CHAIN. */
471 tree
gfc_advance_chain (tree
, int);
473 /* Create a decl for a function. */
474 void gfc_create_function_decl (gfc_namespace
*, bool);
475 /* Generate the code for a function. */
476 void gfc_generate_function_code (gfc_namespace
*);
477 /* Output a BLOCK DATA program unit. */
478 void gfc_generate_block_data (gfc_namespace
*);
479 /* Output a decl for a module variable. */
480 void gfc_generate_module_vars (gfc_namespace
*);
481 /* Get the appropriate return statement for a procedure. */
482 tree
gfc_generate_return (void);
484 struct GTY(()) module_htab_entry
{
487 htab_t
GTY ((param_is (union tree_node
))) decls
;
490 struct module_htab_entry
*gfc_find_module (const char *);
491 void gfc_module_add_decl (struct module_htab_entry
*, tree
);
493 /* Get and set the current location. */
494 void gfc_set_backend_locus (locus
*);
495 void gfc_get_backend_locus (locus
*);
497 /* Handle static constructor functions. */
498 extern GTY(()) tree gfc_static_ctors
;
499 void gfc_generate_constructors (void);
501 /* Get the string length of an array constructor. */
502 bool get_array_ctor_strlen (stmtblock_t
*, gfc_constructor_base
, tree
*);
504 /* Generate a runtime error call. */
505 tree
gfc_trans_runtime_error (bool, locus
*, const char*, ...);
506 tree
gfc_trans_runtime_error_vararg (bool, locus
*, const char*, va_list);
508 /* Generate a runtime warning/error check. */
509 void gfc_trans_runtime_check (bool, bool, tree
, stmtblock_t
*, locus
*,
512 /* Generate a runtime check for same string length. */
513 void gfc_trans_same_strlen_check (const char*, locus
*, tree
, tree
,
516 /* Generate a call to free() after checking that its arg is non-NULL. */
517 tree
gfc_call_free (tree
);
519 /* Allocate memory after performing a few checks. */
520 tree
gfc_call_malloc (stmtblock_t
*, tree
, tree
);
522 /* Build a memcpy call. */
523 tree
gfc_build_memcpy_call (tree
, tree
, tree
);
525 /* Allocate memory for arrays, with optional status variable. */
526 tree
gfc_allocate_array_with_status (stmtblock_t
*, tree
, tree
, tree
, gfc_expr
*);
528 /* Allocate memory, with optional status variable. */
529 tree
gfc_allocate_with_status (stmtblock_t
*, tree
, tree
);
531 /* Generate code to deallocate an array. */
532 tree
gfc_deallocate_with_status (tree
, tree
, bool, gfc_expr
*);
534 /* Generate code to call realloc(). */
535 tree
gfc_call_realloc (stmtblock_t
*, tree
, tree
);
537 /* Generate code for an assignment, includes scalarization. */
538 tree
gfc_trans_assignment (gfc_expr
*, gfc_expr
*, bool, bool);
540 /* Generate code for a pointer assignment. */
541 tree
gfc_trans_pointer_assignment (gfc_expr
*, gfc_expr
*);
543 /* Initialize function decls for library functions. */
544 void gfc_build_intrinsic_lib_fndecls (void);
545 /* Create function decls for IO library functions. */
546 void gfc_trans_io_runtime_check (tree
, tree
, int, const char *, stmtblock_t
*);
547 void gfc_build_io_library_fndecls (void);
548 /* Build a function decl for a library function. */
549 tree
gfc_build_library_function_decl (tree
, tree
, int, ...);
550 tree
gfc_build_library_function_decl_with_spec (tree name
, const char *spec
,
551 tree rettype
, int nargs
, ...);
553 /* Process the local variable decls of a block construct. */
554 void gfc_process_block_locals (gfc_namespace
*, gfc_association_list
*);
556 /* Output initialization/clean-up code that was deferred. */
557 void gfc_trans_deferred_vars (gfc_symbol
*, gfc_wrapped_block
*);
560 tree
pushdecl (tree
);
561 tree
pushdecl_top_level (tree
);
562 void pushlevel (int);
563 tree
poplevel (int, int, int);
564 tree
getdecls (void);
565 tree
gfc_truthvalue_conversion (tree
);
566 tree
gfc_builtin_function (tree
);
568 /* In trans-types.c. */
569 struct array_descr_info
;
570 bool gfc_get_array_descr_info (const_tree
, struct array_descr_info
*);
572 /* In trans-openmp.c */
573 bool gfc_omp_privatize_by_reference (const_tree
);
574 enum omp_clause_default_kind
gfc_omp_predetermined_sharing (tree
);
575 tree
gfc_omp_report_decl (tree
);
576 tree
gfc_omp_clause_default_ctor (tree
, tree
, tree
);
577 tree
gfc_omp_clause_copy_ctor (tree
, tree
, tree
);
578 tree
gfc_omp_clause_assign_op (tree
, tree
, tree
);
579 tree
gfc_omp_clause_dtor (tree
, tree
);
580 bool gfc_omp_disregard_value_expr (tree
, bool);
581 bool gfc_omp_private_debug_clause (tree
, bool);
582 bool gfc_omp_private_outer_ref (tree
);
583 struct gimplify_omp_ctx
;
584 void gfc_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx
*, tree
);
586 /* Runtime library function decls. */
587 extern GTY(()) tree gfor_fndecl_pause_numeric
;
588 extern GTY(()) tree gfor_fndecl_pause_string
;
589 extern GTY(()) tree gfor_fndecl_stop_numeric
;
590 extern GTY(()) tree gfor_fndecl_stop_string
;
591 extern GTY(()) tree gfor_fndecl_error_stop_numeric
;
592 extern GTY(()) tree gfor_fndecl_error_stop_string
;
593 extern GTY(()) tree gfor_fndecl_runtime_error
;
594 extern GTY(()) tree gfor_fndecl_runtime_error_at
;
595 extern GTY(()) tree gfor_fndecl_runtime_warning_at
;
596 extern GTY(()) tree gfor_fndecl_os_error
;
597 extern GTY(()) tree gfor_fndecl_generate_error
;
598 extern GTY(()) tree gfor_fndecl_set_fpe
;
599 extern GTY(()) tree gfor_fndecl_set_options
;
600 extern GTY(()) tree gfor_fndecl_ttynam
;
601 extern GTY(()) tree gfor_fndecl_ctime
;
602 extern GTY(()) tree gfor_fndecl_fdate
;
603 extern GTY(()) tree gfor_fndecl_in_pack
;
604 extern GTY(()) tree gfor_fndecl_in_unpack
;
605 extern GTY(()) tree gfor_fndecl_associated
;
607 /* Math functions. Many other math functions are handled in
608 trans-intrinsic.c. */
610 typedef struct GTY(()) gfc_powdecl_list
{
617 extern GTY(()) gfc_powdecl_list gfor_fndecl_math_powi
[4][3];
618 extern GTY(()) tree gfor_fndecl_math_ishftc4
;
619 extern GTY(()) tree gfor_fndecl_math_ishftc8
;
620 extern GTY(()) tree gfor_fndecl_math_ishftc16
;
622 /* BLAS functions. */
623 extern GTY(()) tree gfor_fndecl_sgemm
;
624 extern GTY(()) tree gfor_fndecl_dgemm
;
625 extern GTY(()) tree gfor_fndecl_cgemm
;
626 extern GTY(()) tree gfor_fndecl_zgemm
;
628 /* String functions. */
629 extern GTY(()) tree gfor_fndecl_compare_string
;
630 extern GTY(()) tree gfor_fndecl_concat_string
;
631 extern GTY(()) tree gfor_fndecl_string_len_trim
;
632 extern GTY(()) tree gfor_fndecl_string_index
;
633 extern GTY(()) tree gfor_fndecl_string_scan
;
634 extern GTY(()) tree gfor_fndecl_string_verify
;
635 extern GTY(()) tree gfor_fndecl_string_trim
;
636 extern GTY(()) tree gfor_fndecl_string_minmax
;
637 extern GTY(()) tree gfor_fndecl_adjustl
;
638 extern GTY(()) tree gfor_fndecl_adjustr
;
639 extern GTY(()) tree gfor_fndecl_select_string
;
640 extern GTY(()) tree gfor_fndecl_compare_string_char4
;
641 extern GTY(()) tree gfor_fndecl_concat_string_char4
;
642 extern GTY(()) tree gfor_fndecl_string_len_trim_char4
;
643 extern GTY(()) tree gfor_fndecl_string_index_char4
;
644 extern GTY(()) tree gfor_fndecl_string_scan_char4
;
645 extern GTY(()) tree gfor_fndecl_string_verify_char4
;
646 extern GTY(()) tree gfor_fndecl_string_trim_char4
;
647 extern GTY(()) tree gfor_fndecl_string_minmax_char4
;
648 extern GTY(()) tree gfor_fndecl_adjustl_char4
;
649 extern GTY(()) tree gfor_fndecl_adjustr_char4
;
650 extern GTY(()) tree gfor_fndecl_select_string_char4
;
652 /* Conversion between character kinds. */
653 extern GTY(()) tree gfor_fndecl_convert_char1_to_char4
;
654 extern GTY(()) tree gfor_fndecl_convert_char4_to_char1
;
656 /* Other misc. runtime library functions. */
657 extern GTY(()) tree gfor_fndecl_size0
;
658 extern GTY(()) tree gfor_fndecl_size1
;
659 extern GTY(()) tree gfor_fndecl_iargc
;
661 /* Implemented in Fortran. */
662 extern GTY(()) tree gfor_fndecl_sc_kind
;
663 extern GTY(()) tree gfor_fndecl_si_kind
;
664 extern GTY(()) tree gfor_fndecl_sr_kind
;
667 /* True if node is an integer constant. */
668 #define INTEGER_CST_P(node) (TREE_CODE(node) == INTEGER_CST)
670 /* gfortran-specific declaration information, the _CONT versions denote
671 arrays with CONTIGUOUS attribute. */
676 GFC_ARRAY_ASSUMED_SHAPE
,
677 GFC_ARRAY_ASSUMED_SHAPE_CONT
,
678 GFC_ARRAY_ALLOCATABLE
,
680 GFC_ARRAY_POINTER_CONT
683 /* Array types only. */
684 /* FIXME: the variable_size annotation here is needed because these types are
685 variable-sized in some other frontends. Due to gengtype deficiency the GTY
686 options of such types have to agree across all frontends. */
687 struct GTY((variable_size
)) lang_type
{
689 enum gfc_array_kind akind
;
690 tree lbound
[GFC_MAX_DIMENSIONS
];
691 tree ubound
[GFC_MAX_DIMENSIONS
];
692 tree stride
[GFC_MAX_DIMENSIONS
];
701 struct GTY((variable_size
)) lang_decl
{
702 /* Dummy variables. */
703 tree saved_descriptor
;
704 /* Assigned integer nodes. Stringlength is the IO format string's length.
705 Addr is the address of the string or the target label. Stringlength is
706 initialized to -2 and assigned to -1 when addr is assigned to the
707 address of target label. */
714 #define GFC_DECL_ASSIGN_ADDR(node) DECL_LANG_SPECIFIC(node)->addr
715 #define GFC_DECL_STRING_LEN(node) DECL_LANG_SPECIFIC(node)->stringlen
716 #define GFC_DECL_SPAN(node) DECL_LANG_SPECIFIC(node)->span
717 #define GFC_DECL_SAVED_DESCRIPTOR(node) \
718 (DECL_LANG_SPECIFIC(node)->saved_descriptor)
719 #define GFC_DECL_PACKED_ARRAY(node) DECL_LANG_FLAG_0(node)
720 #define GFC_DECL_PARTIAL_PACKED_ARRAY(node) DECL_LANG_FLAG_1(node)
721 #define GFC_DECL_ASSIGN(node) DECL_LANG_FLAG_2(node)
722 #define GFC_DECL_COMMON_OR_EQUIV(node) DECL_LANG_FLAG_3(node)
723 #define GFC_DECL_CRAY_POINTEE(node) DECL_LANG_FLAG_4(node)
724 #define GFC_DECL_RESULT(node) DECL_LANG_FLAG_5(node)
725 #define GFC_DECL_SUBREF_ARRAY_P(node) DECL_LANG_FLAG_6(node)
727 /* An array descriptor. */
728 #define GFC_DESCRIPTOR_TYPE_P(node) TYPE_LANG_FLAG_1(node)
729 /* An array without a descriptor. */
730 #define GFC_ARRAY_TYPE_P(node) TYPE_LANG_FLAG_2(node)
731 /* Fortran POINTER type. */
732 #define GFC_POINTER_TYPE_P(node) TYPE_LANG_FLAG_3(node)
733 /* The GFC_TYPE_ARRAY_* members are present in both descriptor and
734 descriptorless array types. */
735 #define GFC_TYPE_ARRAY_LBOUND(node, dim) \
736 (TYPE_LANG_SPECIFIC(node)->lbound[dim])
737 #define GFC_TYPE_ARRAY_UBOUND(node, dim) \
738 (TYPE_LANG_SPECIFIC(node)->ubound[dim])
739 #define GFC_TYPE_ARRAY_STRIDE(node, dim) \
740 (TYPE_LANG_SPECIFIC(node)->stride[dim])
741 #define GFC_TYPE_ARRAY_RANK(node) (TYPE_LANG_SPECIFIC(node)->rank)
742 #define GFC_TYPE_ARRAY_SIZE(node) (TYPE_LANG_SPECIFIC(node)->size)
743 #define GFC_TYPE_ARRAY_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->offset)
744 #define GFC_TYPE_ARRAY_AKIND(node) (TYPE_LANG_SPECIFIC(node)->akind)
745 /* Code should use gfc_get_dtype instead of accessing this directly. It may
746 not be known when the type is created. */
747 #define GFC_TYPE_ARRAY_DTYPE(node) (TYPE_LANG_SPECIFIC(node)->dtype)
748 #define GFC_TYPE_ARRAY_DATAPTR_TYPE(node) \
749 (TYPE_LANG_SPECIFIC(node)->dataptr_type)
750 #define GFC_TYPE_ARRAY_SPAN(node) (TYPE_LANG_SPECIFIC(node)->span)
751 #define GFC_TYPE_ARRAY_BASE_DECL(node, internal) \
752 (TYPE_LANG_SPECIFIC(node)->base_decl[(internal)])
755 /* Create _loc version of build[0-9]. */
758 build1_stat_loc (location_t loc
, enum tree_code code
, tree type
,
759 tree op MEM_STAT_DECL
)
761 tree t
= build1_stat (code
, type
, op PASS_MEM_STAT
);
762 SET_EXPR_LOCATION (t
, loc
);
765 #define build1_loc(l,c,t1,t2) build1_stat_loc (l,c,t1,t2 MEM_STAT_INFO)
768 build2_stat_loc (location_t loc
, enum tree_code code
, tree type
, tree arg0
,
769 tree op MEM_STAT_DECL
)
771 tree t
= build2_stat (code
, type
, arg0
, op PASS_MEM_STAT
);
772 SET_EXPR_LOCATION (t
, loc
);
775 #define build2_loc(l,c,t1,t2,t3) build2_stat_loc (l,c,t1,t2,t3 MEM_STAT_INFO)
778 build3_stat_loc (location_t loc
, enum tree_code code
, tree type
, tree arg0
,
779 tree arg1
, tree op MEM_STAT_DECL
)
781 tree t
= build3_stat (code
, type
, arg0
, arg1
, op PASS_MEM_STAT
);
782 SET_EXPR_LOCATION (t
, loc
);
785 #define build3_loc(l,c,t1,t2,t3,t4) \
786 build3_stat_loc (l,c,t1,t2,t3,t4 MEM_STAT_INFO)
789 build4_stat_loc (location_t loc
, enum tree_code code
, tree type
, tree arg0
,
790 tree arg1
, tree arg2
, tree op MEM_STAT_DECL
)
792 tree t
= build4_stat (code
, type
, arg0
, arg1
, arg2
, op PASS_MEM_STAT
);
793 SET_EXPR_LOCATION (t
, loc
);
796 #define build4_loc(l,c,t1,t2,t3,t4,t5) \
797 build4_stat_loc (l,c,t1,t2,t3,t4,t5 MEM_STAT_INFO)
800 /* Build an expression with void type. */
801 #define build1_v(code, arg) \
802 fold_build1_loc (input_location, code, void_type_node, arg)
803 #define build2_v(code, arg1, arg2) \
804 fold_build2_loc (input_location, code, void_type_node, arg1, arg2)
805 #define build3_v(code, arg1, arg2, arg3) \
806 fold_build3_loc (input_location, code, void_type_node, arg1, arg2, arg3)
807 #define build4_v(code, arg1, arg2, arg3, arg4) \
808 build4_loc (input_location, code, void_type_node, arg1, arg2, \
811 /* This group of functions allows a caller to evaluate an expression from
812 the callee's interface. It establishes a mapping between the interface's
813 dummy arguments and the caller's actual arguments, then applies that
814 mapping to a given gfc_expr.
816 You can initialize a mapping structure like so:
818 gfc_interface_mapping mapping;
820 gfc_init_interface_mapping (&mapping);
822 You should then evaluate each actual argument into a temporary
823 gfc_se structure, here called "se", and map the result to the
824 dummy argument's symbol, here called "sym":
826 gfc_add_interface_mapping (&mapping, sym, &se);
828 After adding all mappings, you should call:
830 gfc_finish_interface_mapping (&mapping, pre, post);
832 where "pre" and "post" are statement blocks for initialization
833 and finalization code respectively. You can then evaluate an
834 interface expression "expr" as follows:
836 gfc_apply_interface_mapping (&mapping, se, expr);
838 Once you've evaluated all expressions, you should free
839 the mapping structure with:
841 gfc_free_interface_mapping (&mapping); */
844 /* This structure represents a mapping from OLD to NEW, where OLD is a
845 dummy argument symbol and NEW is a symbol that represents the value
846 of an actual argument. Mappings are linked together using NEXT
847 (in no particular order). */
848 typedef struct gfc_interface_sym_mapping
850 struct gfc_interface_sym_mapping
*next
;
852 gfc_symtree
*new_sym
;
855 gfc_interface_sym_mapping
;
858 /* This structure is used by callers to evaluate an expression from
859 a callee's interface. */
860 typedef struct gfc_interface_mapping
862 /* Maps the interface's dummy arguments to the values that the caller
863 is passing. The whole list is owned by this gfc_interface_mapping. */
864 gfc_interface_sym_mapping
*syms
;
866 /* A list of gfc_charlens that were needed when creating copies of
867 expressions. The whole list is owned by this gfc_interface_mapping. */
868 gfc_charlen
*charlens
;
870 gfc_interface_mapping
;
872 void gfc_init_interface_mapping (gfc_interface_mapping
*);
873 void gfc_free_interface_mapping (gfc_interface_mapping
*);
874 void gfc_add_interface_mapping (gfc_interface_mapping
*,
875 gfc_symbol
*, gfc_se
*, gfc_expr
*);
876 void gfc_finish_interface_mapping (gfc_interface_mapping
*,
877 stmtblock_t
*, stmtblock_t
*);
878 void gfc_apply_interface_mapping (gfc_interface_mapping
*,
879 gfc_se
*, gfc_expr
*);
882 /* Standard error messages used in all the trans-*.c files. */
883 extern const char gfc_msg_fault
[];
884 extern const char gfc_msg_wrong_return
[];
886 #define OMPWS_WORKSHARE_FLAG 1 /* Set if in a workshare construct. */
887 #define OMPWS_CURR_SINGLEUNIT 2 /* Set if current gfc_code in workshare
888 construct is not workshared. */
889 #define OMPWS_SCALARIZER_WS 4 /* Set if scalarizer should attempt
890 to create parallel loops. */
891 #define OMPWS_NOWAIT 8 /* Use NOWAIT on OMP_FOR. */
892 extern int ompws_flags
;
894 #endif /* GFC_TRANS_H */