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c88c0d42 | 1 | /* Declarations for rtx-reader support for gen* routines. |
5624e564 | 2 | Copyright (C) 2000-2015 Free Software Foundation, Inc. |
c88c0d42 | 3 | |
1322177d | 4 | This file is part of GCC. |
c88c0d42 | 5 | |
1322177d LB |
6 | GCC is free software; you can redistribute it and/or modify it under |
7 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 8 | Software Foundation; either version 3, or (at your option) any later |
1322177d | 9 | version. |
c88c0d42 | 10 | |
1322177d LB |
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
c88c0d42 CP |
15 | |
16 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
c88c0d42 | 19 | |
2199e5fa ZW |
20 | #ifndef GCC_GENSUPPORT_H |
21 | #define GCC_GENSUPPORT_H | |
22 | ||
5d2d3e43 RS |
23 | #include "read-md.h" |
24 | ||
3916d6d8 RH |
25 | struct obstack; |
26 | extern struct obstack *rtl_obstack; | |
27 | ||
5d2d3e43 RS |
28 | /* Information about an .md define_* rtx. */ |
29 | struct 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 | ||
313d38e3 | 42 | extern rtx add_implicit_parallel (rtvec); |
600ab3fc RS |
43 | extern bool init_rtx_reader_args_cb (int, char **, bool (*)(const char *)); |
44 | extern bool init_rtx_reader_args (int, char **); | |
5d2d3e43 | 45 | extern bool read_md_rtx (md_rtx_info *); |
ba0ee63d | 46 | extern unsigned int get_num_insn_codes (); |
c88c0d42 | 47 | |
2199e5fa ZW |
48 | /* Set this to 0 to disable automatic elision of insn patterns which |
49 | can never be used in this configuration. See genconditions.c. | |
50 | Must be set before calling init_md_reader. */ | |
51 | extern int insn_elision; | |
52 | ||
d1427a17 RS |
53 | /* Return the C test that says whether a definition rtx can be used, |
54 | or "" if it can be used unconditionally. */ | |
55 | extern const char *get_c_test (rtx); | |
56 | ||
2199e5fa ZW |
57 | /* If the C test passed as the argument can be evaluated at compile |
58 | time, return its truth value; else return -1. The test must have | |
59 | appeared somewhere in the machine description when genconditions | |
60 | was run. */ | |
3d7aafde | 61 | extern int maybe_eval_c_test (const char *); |
2199e5fa | 62 | |
1c7352cd ZW |
63 | /* Add an entry to the table of conditions. Used by genconditions and |
64 | by read-rtl.c. */ | |
65 | extern void add_c_test (const char *, int); | |
66 | ||
67 | /* This structure is used internally by gensupport.c and genconditions.c. */ | |
2199e5fa ZW |
68 | struct c_test |
69 | { | |
70 | const char *expr; | |
71 | int value; | |
72 | }; | |
73 | ||
2199e5fa | 74 | #ifdef __HASHTAB_H__ |
3d7aafde AJ |
75 | extern hashval_t hash_c_test (const void *); |
76 | extern int cmp_c_test (const void *, const void *); | |
1c7352cd | 77 | extern void traverse_c_tests (htab_trav, void *); |
2199e5fa ZW |
78 | #endif |
79 | ||
e543e219 ZW |
80 | /* Predicate handling: helper functions and data structures. */ |
81 | ||
82 | struct pred_data | |
83 | { | |
84 | struct pred_data *next; /* for iterating over the set of all preds */ | |
85 | const char *name; /* predicate name */ | |
86 | bool special; /* special handling of modes? */ | |
87 | ||
88 | /* data used primarily by genpreds.c */ | |
89 | const char *c_block; /* C test block */ | |
90 | rtx exp; /* RTL test expression */ | |
91 | ||
92 | /* data used primarily by genrecog.c */ | |
93 | enum rtx_code singleton; /* if pred takes only one code, that code */ | |
e663da80 | 94 | int num_codes; /* number of codes accepted */ |
e543e219 ZW |
95 | bool allows_non_lvalue; /* if pred allows non-lvalue expressions */ |
96 | bool allows_non_const; /* if pred allows non-const expressions */ | |
97 | bool codes[NUM_RTX_CODE]; /* set of codes accepted */ | |
98 | }; | |
99 | ||
100 | extern struct pred_data *first_predicate; | |
101 | extern struct pred_data *lookup_predicate (const char *); | |
e663da80 | 102 | extern void add_predicate_code (struct pred_data *, enum rtx_code); |
e543e219 ZW |
103 | extern void add_predicate (struct pred_data *); |
104 | ||
105 | #define FOR_ALL_PREDICATES(p) for (p = first_predicate; p; p = p->next) | |
106 | ||
e792559a RS |
107 | struct pattern_stats |
108 | { | |
109 | /* The largest match_operand, match_operator or match_parallel | |
110 | number found. */ | |
111 | int max_opno; | |
112 | ||
113 | /* The largest match_dup, match_op_dup or match_par_dup number found. */ | |
114 | int max_dup_opno; | |
115 | ||
116 | /* The largest match_scratch number found. */ | |
117 | int max_scratch_opno; | |
118 | ||
119 | /* The number of times match_dup, match_op_dup or match_par_dup appears | |
120 | in the pattern. */ | |
121 | int num_dups; | |
122 | ||
123 | /* The number of rtx arguments to the generator function. */ | |
124 | int num_generator_args; | |
125 | ||
126 | /* The number of rtx operands in an insn. */ | |
127 | int num_insn_operands; | |
128 | ||
129 | /* The number of operand variables that are needed. */ | |
130 | int num_operand_vars; | |
131 | }; | |
132 | ||
133 | extern void get_pattern_stats (struct pattern_stats *ranges, rtvec vec); | |
c9f84f2e | 134 | extern void compute_test_codes (rtx, file_location, char *); |
58d745ec | 135 | extern file_location get_file_location (rtx); |
3beaff21 RS |
136 | extern const char *get_emit_function (rtx); |
137 | extern bool needs_barrier_p (rtx); | |
e792559a | 138 | |
2199e5fa | 139 | #endif /* GCC_GENSUPPORT_H */ |