229 lines
6.8 KiB
C++
229 lines
6.8 KiB
C++
/* Declarations for rtx-reader support for gen* routines.
|
|
Copyright (C) 2000-2023 Free Software Foundation, Inc.
|
|
|
|
This file is part of GCC.
|
|
|
|
GCC is free software; you can redistribute it and/or modify it under
|
|
the terms of the GNU General Public License as published by the Free
|
|
Software Foundation; either version 3, or (at your option) any later
|
|
version.
|
|
|
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GCC; see the file COPYING3. If not see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef GCC_GENSUPPORT_H
|
|
#define GCC_GENSUPPORT_H
|
|
|
|
#include "read-md.h"
|
|
|
|
struct obstack;
|
|
extern struct obstack *rtl_obstack;
|
|
|
|
/* Information about an .md define_* rtx. */
|
|
class md_rtx_info {
|
|
public:
|
|
/* The rtx itself. */
|
|
rtx def;
|
|
|
|
/* The location of the first line of the rtx. */
|
|
file_location loc;
|
|
|
|
/* The unique number attached to the rtx. Currently all define_insns,
|
|
define_expands, define_splits, define_peepholes and define_peephole2s
|
|
share the same insn_code index space. */
|
|
int index;
|
|
};
|
|
|
|
#define OPTAB_CL(name, pat, c, b, l) name,
|
|
#define OPTAB_CX(name, pat)
|
|
#define OPTAB_CD(name, pat) name,
|
|
#define OPTAB_NL(name, pat, c, b, s, l) name,
|
|
#define OPTAB_NC(name, pat, c) name,
|
|
#define OPTAB_NX(name, pat)
|
|
#define OPTAB_VL(name, pat, c, b, s, l) name,
|
|
#define OPTAB_VC(name, pat, c) name,
|
|
#define OPTAB_VX(name, pat)
|
|
#define OPTAB_DC(name, pat, c) name,
|
|
#define OPTAB_D(name, pat) name,
|
|
|
|
/* Enumerates all optabs. */
|
|
typedef enum optab_tag {
|
|
unknown_optab,
|
|
#include "optabs.def"
|
|
NUM_OPTABS
|
|
} optab;
|
|
|
|
#undef OPTAB_CL
|
|
#undef OPTAB_CX
|
|
#undef OPTAB_CD
|
|
#undef OPTAB_NL
|
|
#undef OPTAB_NC
|
|
#undef OPTAB_NX
|
|
#undef OPTAB_VL
|
|
#undef OPTAB_VC
|
|
#undef OPTAB_VX
|
|
#undef OPTAB_DC
|
|
#undef OPTAB_D
|
|
|
|
/* Describes one entry in optabs.def. */
|
|
struct optab_def
|
|
{
|
|
/* The name of the optab (e.g. "add_optab"). */
|
|
const char *name;
|
|
|
|
/* The pattern that matching define_expands and define_insns have.
|
|
See the comment at the head of optabs.def for details. */
|
|
const char *pattern;
|
|
|
|
/* The initializers (in the form of C code) for the libcall_basename,
|
|
libcall_suffix and libcall_gen fields of (convert_)optab_libcall_d. */
|
|
const char *base;
|
|
const char *suffix;
|
|
const char *libcall;
|
|
|
|
/* The optab's enum value. */
|
|
unsigned int op;
|
|
|
|
/* The value returned by optab_to_code (OP). */
|
|
enum rtx_code fcode;
|
|
|
|
/* CODE if code_to_optab (CODE) should return OP, otherwise UNKNOWN. */
|
|
enum rtx_code rcode;
|
|
|
|
/* 1: conversion optabs with libcall data,
|
|
2: conversion optabs without libcall data,
|
|
3: non-conversion optabs with libcall data ("normal" and "overflow"
|
|
optabs in the optabs.def comment)
|
|
4: non-conversion optabs without libcall data ("direct" optabs). */
|
|
unsigned int kind;
|
|
};
|
|
|
|
extern optab_def optabs[];
|
|
extern unsigned int num_optabs;
|
|
|
|
/* Information about an instruction name that matches an optab pattern. */
|
|
struct optab_pattern
|
|
{
|
|
/* The name of the instruction. */
|
|
const char *name;
|
|
|
|
/* The matching optab. */
|
|
unsigned int op;
|
|
|
|
/* The optab modes. M2 is only significant for conversion optabs;
|
|
it is zero otherwise. */
|
|
unsigned int m1, m2;
|
|
|
|
/* An index that provides a lexicographical sort of (OP, M2, M1).
|
|
Used by genopinit.cc. */
|
|
unsigned int sort_num;
|
|
};
|
|
|
|
extern rtx add_implicit_parallel (rtvec);
|
|
extern rtx_reader *init_rtx_reader_args_cb (int, const char **,
|
|
bool (*)(const char *));
|
|
extern rtx_reader *init_rtx_reader_args (int, const char **);
|
|
extern bool read_md_rtx (md_rtx_info *);
|
|
extern unsigned int get_num_insn_codes ();
|
|
|
|
/* Set this to 0 to disable automatic elision of insn patterns which
|
|
can never be used in this configuration. See genconditions.cc.
|
|
Must be set before calling init_md_reader. */
|
|
extern int insn_elision;
|
|
|
|
/* Return the C test that says whether a definition rtx can be used,
|
|
or "" if it can be used unconditionally. */
|
|
extern const char *get_c_test (rtx);
|
|
|
|
/* If the C test passed as the argument can be evaluated at compile
|
|
time, return its truth value; else return -1. The test must have
|
|
appeared somewhere in the machine description when genconditions
|
|
was run. */
|
|
extern int maybe_eval_c_test (const char *);
|
|
|
|
/* Add an entry to the table of conditions. Used by genconditions and
|
|
by read-rtl.cc. */
|
|
extern void add_c_test (const char *, int);
|
|
|
|
/* This structure is used internally by gensupport.cc and genconditions.cc. */
|
|
struct c_test
|
|
{
|
|
const char *expr;
|
|
int value;
|
|
};
|
|
|
|
#ifdef __HASHTAB_H__
|
|
extern hashval_t hash_c_test (const void *);
|
|
extern int cmp_c_test (const void *, const void *);
|
|
extern void traverse_c_tests (htab_trav, void *);
|
|
#endif
|
|
|
|
/* Predicate handling: helper functions and data structures. */
|
|
|
|
struct pred_data
|
|
{
|
|
struct pred_data *next; /* for iterating over the set of all preds */
|
|
const char *name; /* predicate name */
|
|
bool special; /* special handling of modes? */
|
|
|
|
/* data used primarily by genpreds.cc */
|
|
const char *c_block; /* C test block */
|
|
rtx exp; /* RTL test expression */
|
|
|
|
/* data used primarily by genrecog.cc */
|
|
enum rtx_code singleton; /* if pred takes only one code, that code */
|
|
int num_codes; /* number of codes accepted */
|
|
bool allows_non_lvalue; /* if pred allows non-lvalue expressions */
|
|
bool allows_non_const; /* if pred allows non-const expressions */
|
|
bool codes[NUM_RTX_CODE]; /* set of codes accepted */
|
|
};
|
|
|
|
extern struct pred_data *first_predicate;
|
|
extern struct pred_data *lookup_predicate (const char *);
|
|
extern void add_predicate_code (struct pred_data *, enum rtx_code);
|
|
extern void add_predicate (struct pred_data *);
|
|
|
|
#define FOR_ALL_PREDICATES(p) for (p = first_predicate; p; p = p->next)
|
|
|
|
struct pattern_stats
|
|
{
|
|
/* The largest match_operand, match_operator or match_parallel
|
|
number found. */
|
|
int max_opno;
|
|
|
|
/* The largest match_dup, match_op_dup or match_par_dup number found. */
|
|
int max_dup_opno;
|
|
|
|
/* The smallest and largest match_scratch number found. */
|
|
int min_scratch_opno;
|
|
int max_scratch_opno;
|
|
|
|
/* The number of times match_dup, match_op_dup or match_par_dup appears
|
|
in the pattern. */
|
|
int num_dups;
|
|
|
|
/* The number of rtx arguments to the generator function. */
|
|
int num_generator_args;
|
|
|
|
/* The number of rtx operands in an insn. */
|
|
int num_insn_operands;
|
|
|
|
/* The number of operand variables that are needed. */
|
|
int num_operand_vars;
|
|
};
|
|
|
|
extern void get_pattern_stats (struct pattern_stats *ranges, rtvec vec);
|
|
extern void compute_test_codes (rtx, file_location, char *);
|
|
extern file_location get_file_location (rtx);
|
|
extern const char *get_emit_function (rtx);
|
|
extern bool needs_barrier_p (rtx);
|
|
extern bool find_optab (optab_pattern *, const char *);
|
|
|
|
#endif /* GCC_GENSUPPORT_H */
|