* Makefile.in (HOST_CFLAGS): Take out -DGENERATOR_FILE.

	 (CONFIG_H, TCONFIG_H, TM_P_H): Update.
	 (GEN, STAGESTUFF): Add new files.
	 (insn-constants.h, s-constants, tm-preds.h, s-preds,
	 genconstants, genpreds, genconstants.o, genpreds.o): New rules.
	 (hashtab.o, safe-ctype.o): Add -DGENERATOR_FILE.
	 * mkconfig.sh: Include tm-preds.h in tm_p.h; insn-constants.h
	 as well as insn-codes.h and insn-flags.h in config.h; and no
	 extra headers in tconfig.h and hconfig.h.

	 * gencodes.c: Eliminate code to generate predicate declarations
	 or #defines for md-file constants.
	 * genconstants.c, genpreds.c: New files.

	 * i386.md: Re-order guard expressions such that TARGET_64BIT
	 comes first, when this permits better optimization.  Add
	 TARGET_64BIT to more x86-64 patterns.  Add comment explaining
	 why this is desirable.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@44743 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 89 insertions, 0 deletions

diff --git a/gcc/genconstants.c b/gcc/genconstants.c
new file mode 100644
index 00000000000..69d62cba6a2
--- /dev/null
+++ b/gcc/genconstants.c
@@ -0,0 +1,89 @@
+/* Generate from machine description:
+   a series of #define statements, one for each constant named in
+   a (define_constants ...) pattern.
+
+   Copyright (C) 1987, 1991, 1995, 1998,
+   1999, 2000, 2001 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC 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 2, or (at your option)
+any later version.
+
+GNU CC 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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* This program does not use gensupport.c because it does not need to
+   look at insn patterns, only (define_constants), and we want to
+   minimize dependencies.  */
+
+#include "hconfig.h"
+#include "system.h"
+#include "rtl.h"
+#include "errors.h"
+#include "gensupport.h"
+
+static int print_md_constant PARAMS ((void **, void *));
+extern int main PARAMS ((int, char **));
+
+/* Called via traverse_md_constants; emit a #define for
+   the current constant definition.  */
+
+static int
+print_md_constant (slot, info)
+     void **slot;
+     void *info;
+{
+  struct md_constant *def = *slot;
+  FILE *file = info;
+
+  fprintf (file, "#define %s %s\n", def->name, def->value);
+  return 1;
+}
+
+int
+main (argc, argv)
+     int argc;
+     char **argv;
+{
+  int dummy1, dummy2;
+  rtx desc;
+
+  progname = "genconstants";
+
+  if (argc <= 1)
+    fatal ("No input file name.");
+
+  if (init_md_reader (argv[1]) != SUCCESS_EXIT_CODE)
+    return (FATAL_EXIT_CODE);
+
+  /* Scan and discard the entire file.  This has the side effect
+     of loading up the constants table that we wish to scan.  */
+  do
+    desc = read_md_rtx (&dummy1, &dummy2);
+  while (desc);
+
+  puts ("/* Generated automatically by the program `genconstants'");
+  puts ("   from the machine description file `md'.  */\n");
+  puts ("#ifndef GCC_INSN_CONSTANTS_H");
+  puts ("#define GCC_INSN_CONSTANTS_H\n");
+
+  traverse_md_constants (print_md_constant, stdout);
+
+  puts ("\n#endif /* GCC_INSN_CONSTANTS_H */");
+
+  if (ferror (stdout) || fflush (stdout) || fclose (stdout))
+    return FATAL_EXIT_CODE;
+
+  return SUCCESS_EXIT_CODE;
+}
+