/* Declarations for rtx-reader support for gen* routines.
- Copyright (C) 2000-2015 Free Software Foundation, Inc.
+ Copyright (C) 2000-2020 Free Software Foundation, Inc.
This file is part of GCC.
extern struct obstack *rtl_obstack;
/* Information about an .md define_* rtx. */
-struct md_rtx_info {
+class md_rtx_info {
+public:
/* The rtx itself. */
rtx def;
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.c. */
+ unsigned int sort_num;
+};
+
extern rtx add_implicit_parallel (rtvec);
-extern bool init_rtx_reader_args_cb (int, char **, bool (*)(const char *));
-extern bool init_rtx_reader_args (int, char **);
+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.c.
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
/* The largest match_dup, match_op_dup or match_par_dup number found. */
int max_dup_opno;
- /* The largest match_scratch number found. */
+ /* 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
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 */