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git.ipfire.org Git - thirdparty/gcc.git/blob - gcc/gensupport.h
1 /* Declarations for rtx-reader support for gen* routines.
2 Copyright (C) 2000, 2002, 2003, 2004, 2007, 2008
3 Free Software Foundation, Inc.
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 3, 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 COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
21 #ifndef GCC_GENSUPPORT_H
22 #define GCC_GENSUPPORT_H
25 extern struct obstack
*rtl_obstack
;
26 extern const char *in_fname
;
28 extern int init_md_reader_args_cb (int, char **, bool (*)(const char *));
29 extern int init_md_reader_args (int, char **);
30 extern rtx
read_md_rtx (int *, int *);
32 /* Set this to 0 to disable automatic elision of insn patterns which
33 can never be used in this configuration. See genconditions.c.
34 Must be set before calling init_md_reader. */
35 extern int insn_elision
;
37 /* If the C test passed as the argument can be evaluated at compile
38 time, return its truth value; else return -1. The test must have
39 appeared somewhere in the machine description when genconditions
41 extern int maybe_eval_c_test (const char *);
43 /* Add an entry to the table of conditions. Used by genconditions and
45 extern void add_c_test (const char *, int);
47 /* This structure is used internally by gensupport.c and genconditions.c. */
55 extern hashval_t
hash_c_test (const void *);
56 extern int cmp_c_test (const void *, const void *);
57 extern void traverse_c_tests (htab_trav
, void *);
60 /* Predicate handling: helper functions and data structures. */
64 struct pred_data
*next
; /* for iterating over the set of all preds */
65 const char *name
; /* predicate name */
66 bool special
; /* special handling of modes? */
68 /* data used primarily by genpreds.c */
69 const char *c_block
; /* C test block */
70 rtx exp
; /* RTL test expression */
72 /* data used primarily by genrecog.c */
73 enum rtx_code singleton
; /* if pred takes only one code, that code */
74 int num_codes
; /* number of codes accepted */
75 bool allows_non_lvalue
; /* if pred allows non-lvalue expressions */
76 bool allows_non_const
; /* if pred allows non-const expressions */
77 bool codes
[NUM_RTX_CODE
]; /* set of codes accepted */
80 extern struct pred_data
*first_predicate
;
81 extern struct pred_data
*lookup_predicate (const char *);
82 extern void add_predicate_code (struct pred_data
*, enum rtx_code
);
83 extern void add_predicate (struct pred_data
*);
85 #define FOR_ALL_PREDICATES(p) for (p = first_predicate; p; p = p->next)
87 /* This callback will be invoked whenever an rtl include directive is
88 processed. To be used for creation of the dependency file. */
89 extern void (*include_callback
) (const char *);
91 #endif /* GCC_GENSUPPORT_H */