]> git.ipfire.org Git - thirdparty/gcc.git/blame - gcc/gensupport.h
gcc/
[thirdparty/gcc.git] / gcc / gensupport.h
CommitLineData
c5ddd6b5 1/* Declarations for rtx-reader support for gen* routines.
d353bf18 2 Copyright (C) 2000-2015 Free Software Foundation, Inc.
c5ddd6b5 3
f12b58b3 4This file is part of GCC.
c5ddd6b5 5
f12b58b3 6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8c4c00c1 8Software Foundation; either version 3, or (at your option) any later
f12b58b3 9version.
c5ddd6b5 10
f12b58b3 11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14for more details.
c5ddd6b5 15
16You should have received a copy of the GNU General Public License
8c4c00c1 17along with GCC; see the file COPYING3. If not see
18<http://www.gnu.org/licenses/>. */
c5ddd6b5 19
b70bd542 20#ifndef GCC_GENSUPPORT_H
21#define GCC_GENSUPPORT_H
22
c04601c1 23#include "read-md.h"
24
96d905e5 25struct obstack;
26extern struct obstack *rtl_obstack;
27
c04601c1 28/* Information about an .md define_* rtx. */
29struct md_rtx_info {
30 /* The rtx itself. */
31 rtx def;
32
33 /* The location of the first line of the rtx. */
34 file_location loc;
35
36 /* The unique number attached to the rtx. Currently all define_insns,
37 define_expands, define_splits, define_peepholes and define_peephole2s
38 share the same insn_code index space. */
39 int index;
40};
41
2ff8d4ae 42extern rtx add_implicit_parallel (rtvec);
77ba95d0 43extern bool init_rtx_reader_args_cb (int, char **, bool (*)(const char *));
44extern bool init_rtx_reader_args (int, char **);
c04601c1 45extern bool read_md_rtx (md_rtx_info *);
c5ddd6b5 46
b70bd542 47/* Set this to 0 to disable automatic elision of insn patterns which
48 can never be used in this configuration. See genconditions.c.
49 Must be set before calling init_md_reader. */
50extern int insn_elision;
51
b70bd542 52/* If the C test passed as the argument can be evaluated at compile
53 time, return its truth value; else return -1. The test must have
54 appeared somewhere in the machine description when genconditions
55 was run. */
1a97be37 56extern int maybe_eval_c_test (const char *);
b70bd542 57
af908c02 58/* Add an entry to the table of conditions. Used by genconditions and
59 by read-rtl.c. */
60extern void add_c_test (const char *, int);
61
62/* This structure is used internally by gensupport.c and genconditions.c. */
b70bd542 63struct c_test
64{
65 const char *expr;
66 int value;
67};
68
b70bd542 69#ifdef __HASHTAB_H__
1a97be37 70extern hashval_t hash_c_test (const void *);
71extern int cmp_c_test (const void *, const void *);
af908c02 72extern void traverse_c_tests (htab_trav, void *);
b70bd542 73#endif
74
cbf464bd 75/* Predicate handling: helper functions and data structures. */
76
77struct pred_data
78{
79 struct pred_data *next; /* for iterating over the set of all preds */
80 const char *name; /* predicate name */
81 bool special; /* special handling of modes? */
82
83 /* data used primarily by genpreds.c */
84 const char *c_block; /* C test block */
85 rtx exp; /* RTL test expression */
86
87 /* data used primarily by genrecog.c */
88 enum rtx_code singleton; /* if pred takes only one code, that code */
c7a4c804 89 int num_codes; /* number of codes accepted */
cbf464bd 90 bool allows_non_lvalue; /* if pred allows non-lvalue expressions */
91 bool allows_non_const; /* if pred allows non-const expressions */
92 bool codes[NUM_RTX_CODE]; /* set of codes accepted */
93};
94
95extern struct pred_data *first_predicate;
96extern struct pred_data *lookup_predicate (const char *);
c7a4c804 97extern void add_predicate_code (struct pred_data *, enum rtx_code);
cbf464bd 98extern void add_predicate (struct pred_data *);
99
100#define FOR_ALL_PREDICATES(p) for (p = first_predicate; p; p = p->next)
101
22add764 102struct pattern_stats
103{
104 /* The largest match_operand, match_operator or match_parallel
105 number found. */
106 int max_opno;
107
108 /* The largest match_dup, match_op_dup or match_par_dup number found. */
109 int max_dup_opno;
110
111 /* The largest match_scratch number found. */
112 int max_scratch_opno;
113
114 /* The number of times match_dup, match_op_dup or match_par_dup appears
115 in the pattern. */
116 int num_dups;
117
118 /* The number of rtx arguments to the generator function. */
119 int num_generator_args;
120
121 /* The number of rtx operands in an insn. */
122 int num_insn_operands;
123
124 /* The number of operand variables that are needed. */
125 int num_operand_vars;
126};
127
128extern void get_pattern_stats (struct pattern_stats *ranges, rtvec vec);
5d1f1932 129extern void compute_test_codes (rtx, file_location, char *);
03acb861 130extern const char *get_emit_function (rtx);
131extern bool needs_barrier_p (rtx);
22add764 132
b70bd542 133#endif /* GCC_GENSUPPORT_H */