--- a/gcc/gensupport.h	Sun Aug 21 07:07:55 2011 +0900
+++ b/gcc/gensupport.h	Fri Oct 27 22:46:09 2017 +0900
@@ -1,6 +1,5 @@
 /* Declarations for rtx-reader support for gen* routines.
-   Copyright (C) 2000, 2002, 2003, 2004, 2007, 2008, 2010
-   Free Software Foundation, Inc.
+   Copyright (C) 2000-2017 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -21,18 +20,126 @@
 #ifndef GCC_GENSUPPORT_H
 #define GCC_GENSUPPORT_H
 
+#include "read-md.h"
+
 struct obstack;
 extern struct obstack *rtl_obstack;
 
-extern bool init_rtx_reader_args_cb (int, char **, bool (*)(const char *));
-extern bool init_rtx_reader_args (int, char **);
-extern rtx read_md_rtx (int *, int *);
+/* Information about an .md define_* rtx.  */
+struct md_rtx_info {
+  /* 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.c.  */
+  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.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
@@ -83,4 +190,38 @@
 
 #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 */