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c88c0d42 | 1 | /* Declarations for rtx-reader support for gen* routines. |
818ab71a | 2 | Copyright (C) 2000-2016 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 | ||
886456e2 RS |
42 | #define OPTAB_CL(name, pat, c, b, l) name, |
43 | #define OPTAB_CX(name, pat) | |
44 | #define OPTAB_CD(name, pat) name, | |
45 | #define OPTAB_NL(name, pat, c, b, s, l) name, | |
46 | #define OPTAB_NC(name, pat, c) name, | |
47 | #define OPTAB_NX(name, pat) | |
48 | #define OPTAB_VL(name, pat, c, b, s, l) name, | |
49 | #define OPTAB_VC(name, pat, c) name, | |
50 | #define OPTAB_VX(name, pat) | |
51 | #define OPTAB_DC(name, pat, c) name, | |
52 | #define OPTAB_D(name, pat) name, | |
53 | ||
54 | /* Enumerates all optabs. */ | |
55 | typedef enum optab_tag { | |
56 | unknown_optab, | |
57 | #include "optabs.def" | |
58 | NUM_OPTABS | |
59 | } optab; | |
60 | ||
61 | #undef OPTAB_CL | |
62 | #undef OPTAB_CX | |
63 | #undef OPTAB_CD | |
64 | #undef OPTAB_NL | |
65 | #undef OPTAB_NC | |
66 | #undef OPTAB_NX | |
67 | #undef OPTAB_VL | |
68 | #undef OPTAB_VC | |
69 | #undef OPTAB_VX | |
70 | #undef OPTAB_DC | |
71 | #undef OPTAB_D | |
72 | ||
73 | /* Describes one entry in optabs.def. */ | |
74 | struct optab_def | |
75 | { | |
76 | /* The name of the optab (e.g. "add_optab"). */ | |
77 | const char *name; | |
78 | ||
79 | /* The pattern that matching define_expands and define_insns have. | |
80 | See the comment at the head of optabs.def for details. */ | |
81 | const char *pattern; | |
82 | ||
83 | /* The initializers (in the form of C code) for the libcall_basename, | |
84 | libcall_suffix and libcall_gen fields of (convert_)optab_libcall_d. */ | |
85 | const char *base; | |
86 | const char *suffix; | |
87 | const char *libcall; | |
88 | ||
89 | /* The optab's enum value. */ | |
90 | unsigned int op; | |
91 | ||
92 | /* The value returned by optab_to_code (OP). */ | |
93 | enum rtx_code fcode; | |
94 | ||
95 | /* CODE if code_to_optab (CODE) should return OP, otherwise UNKNOWN. */ | |
96 | enum rtx_code rcode; | |
97 | ||
98 | /* 1: conversion optabs with libcall data, | |
99 | 2: conversion optabs without libcall data, | |
100 | 3: non-conversion optabs with libcall data ("normal" and "overflow" | |
101 | optabs in the optabs.def comment) | |
102 | 4: non-conversion optabs without libcall data ("direct" optabs). */ | |
103 | unsigned int kind; | |
104 | }; | |
105 | ||
106 | extern optab_def optabs[]; | |
107 | extern unsigned int num_optabs; | |
108 | ||
109 | /* Information about an instruction name that matches an optab pattern. */ | |
110 | struct optab_pattern | |
111 | { | |
112 | /* The name of the instruction. */ | |
113 | const char *name; | |
114 | ||
115 | /* The matching optab. */ | |
116 | unsigned int op; | |
117 | ||
118 | /* The optab modes. M2 is only significant for conversion optabs; | |
119 | it is zero otherwise. */ | |
120 | unsigned int m1, m2; | |
121 | ||
122 | /* An index that provides a lexicographical sort of (OP, M2, M1). | |
123 | Used by genopinit.c. */ | |
124 | unsigned int sort_num; | |
125 | }; | |
126 | ||
313d38e3 | 127 | extern rtx add_implicit_parallel (rtvec); |
600ab3fc RS |
128 | extern bool init_rtx_reader_args_cb (int, char **, bool (*)(const char *)); |
129 | extern bool init_rtx_reader_args (int, char **); | |
5d2d3e43 | 130 | extern bool read_md_rtx (md_rtx_info *); |
ba0ee63d | 131 | extern unsigned int get_num_insn_codes (); |
c88c0d42 | 132 | |
2199e5fa ZW |
133 | /* Set this to 0 to disable automatic elision of insn patterns which |
134 | can never be used in this configuration. See genconditions.c. | |
135 | Must be set before calling init_md_reader. */ | |
136 | extern int insn_elision; | |
137 | ||
d1427a17 RS |
138 | /* Return the C test that says whether a definition rtx can be used, |
139 | or "" if it can be used unconditionally. */ | |
140 | extern const char *get_c_test (rtx); | |
141 | ||
2199e5fa ZW |
142 | /* If the C test passed as the argument can be evaluated at compile |
143 | time, return its truth value; else return -1. The test must have | |
144 | appeared somewhere in the machine description when genconditions | |
145 | was run. */ | |
3d7aafde | 146 | extern int maybe_eval_c_test (const char *); |
2199e5fa | 147 | |
1c7352cd ZW |
148 | /* Add an entry to the table of conditions. Used by genconditions and |
149 | by read-rtl.c. */ | |
150 | extern void add_c_test (const char *, int); | |
151 | ||
152 | /* This structure is used internally by gensupport.c and genconditions.c. */ | |
2199e5fa ZW |
153 | struct c_test |
154 | { | |
155 | const char *expr; | |
156 | int value; | |
157 | }; | |
158 | ||
2199e5fa | 159 | #ifdef __HASHTAB_H__ |
3d7aafde AJ |
160 | extern hashval_t hash_c_test (const void *); |
161 | extern int cmp_c_test (const void *, const void *); | |
1c7352cd | 162 | extern void traverse_c_tests (htab_trav, void *); |
2199e5fa ZW |
163 | #endif |
164 | ||
e543e219 ZW |
165 | /* Predicate handling: helper functions and data structures. */ |
166 | ||
167 | struct pred_data | |
168 | { | |
169 | struct pred_data *next; /* for iterating over the set of all preds */ | |
170 | const char *name; /* predicate name */ | |
171 | bool special; /* special handling of modes? */ | |
172 | ||
173 | /* data used primarily by genpreds.c */ | |
174 | const char *c_block; /* C test block */ | |
175 | rtx exp; /* RTL test expression */ | |
176 | ||
177 | /* data used primarily by genrecog.c */ | |
178 | enum rtx_code singleton; /* if pred takes only one code, that code */ | |
e663da80 | 179 | int num_codes; /* number of codes accepted */ |
e543e219 ZW |
180 | bool allows_non_lvalue; /* if pred allows non-lvalue expressions */ |
181 | bool allows_non_const; /* if pred allows non-const expressions */ | |
182 | bool codes[NUM_RTX_CODE]; /* set of codes accepted */ | |
183 | }; | |
184 | ||
185 | extern struct pred_data *first_predicate; | |
186 | extern struct pred_data *lookup_predicate (const char *); | |
e663da80 | 187 | extern void add_predicate_code (struct pred_data *, enum rtx_code); |
e543e219 ZW |
188 | extern void add_predicate (struct pred_data *); |
189 | ||
190 | #define FOR_ALL_PREDICATES(p) for (p = first_predicate; p; p = p->next) | |
191 | ||
e792559a RS |
192 | struct pattern_stats |
193 | { | |
194 | /* The largest match_operand, match_operator or match_parallel | |
195 | number found. */ | |
196 | int max_opno; | |
197 | ||
198 | /* The largest match_dup, match_op_dup or match_par_dup number found. */ | |
199 | int max_dup_opno; | |
200 | ||
201 | /* The largest match_scratch number found. */ | |
202 | int max_scratch_opno; | |
203 | ||
204 | /* The number of times match_dup, match_op_dup or match_par_dup appears | |
205 | in the pattern. */ | |
206 | int num_dups; | |
207 | ||
208 | /* The number of rtx arguments to the generator function. */ | |
209 | int num_generator_args; | |
210 | ||
211 | /* The number of rtx operands in an insn. */ | |
212 | int num_insn_operands; | |
213 | ||
214 | /* The number of operand variables that are needed. */ | |
215 | int num_operand_vars; | |
216 | }; | |
217 | ||
218 | extern void get_pattern_stats (struct pattern_stats *ranges, rtvec vec); | |
c9f84f2e | 219 | extern void compute_test_codes (rtx, file_location, char *); |
58d745ec | 220 | extern file_location get_file_location (rtx); |
3beaff21 RS |
221 | extern const char *get_emit_function (rtx); |
222 | extern bool needs_barrier_p (rtx); | |
886456e2 | 223 | extern bool find_optab (optab_pattern *, const char *); |
e792559a | 224 | |
2199e5fa | 225 | #endif /* GCC_GENSUPPORT_H */ |