Add gcc-4.6. Synced to @180989

Change-Id: Ie3676586e1d8e3c8cd9f07d022f450d05fa08439
svn://gcc.gnu.org/svn/gcc/branches/google/gcc-4_6-mobile

1 files changed, 103 insertions, 0 deletions

diff --git a/gcc-4.6/gcc/genconstants.c b/gcc-4.6/gcc/genconstants.c
new file mode 100644
index 000000000..0d1807e04
--- /dev/null
+++ b/gcc-4.6/gcc/genconstants.c
@@ -0,0 +1,103 @@
+/* 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, 2003, 2004,
+   2007, 2010  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/>.  */
+
+/* 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 "bconfig.h"
+#include "system.h"
+#include "coretypes.h"
+#include "errors.h"
+#include "read-md.h"
+
+/* Called via traverse_md_constants; emit a #define for
+   the current constant definition.  */
+
+static int
+print_md_constant (void **slot, void *info ATTRIBUTE_UNUSED)
+{
+  struct md_constant *def = (struct md_constant *) *slot;
+
+  if (!def->parent_enum)
+    printf ("#define %s %s\n", def->name, def->value);
+  return 1;
+}
+
+/* Called via traverse_enums.  Emit an enum definition for
+   enum_type *SLOT.  */
+
+static int
+print_enum_type (void **slot, void *info ATTRIBUTE_UNUSED)
+{
+  struct enum_type *def;
+  struct enum_value *value;
+  char *value_name;
+
+  def = (struct enum_type *) *slot;
+  printf ("\nenum %s {", def->name);
+  for (value = def->values; value; value = value->next)
+    {
+      printf ("\n  %s = %s", value->def->name, value->def->value);
+      if (value->next)
+	putc (',', stdout);
+    }
+  printf ("\n};\n");
+
+  /* Define NUM_<enum>_VALUES to be the largest enum value + 1.  */
+  value_name = ACONCAT (("num_", def->name, "_values", NULL));
+  upcase_string (value_name);
+  printf ("#define %s %d\n", value_name, def->num_values);
+
+  /* Declare the array that is generated by genenum.  */
+  printf ("extern const char *const %s_strings[];\n", def->name);
+
+  return 1;
+}
+
+int
+main (int argc, char **argv)
+{
+  progname = "genconstants";
+
+  if (!read_md_files (argc, argv, NULL, NULL))
+    return (FATAL_EXIT_CODE);
+
+  /* Initializing the MD reader has the side effect of loading up
+     the constants table that we wish to scan.  */
+
+  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, 0);
+  traverse_enum_types (print_enum_type, 0);
+
+  puts ("\n#endif /* GCC_INSN_CONSTANTS_H */");
+
+  if (ferror (stdout) || fflush (stdout) || fclose (stdout))
+    return FATAL_EXIT_CODE;
+
+  return SUCCESS_EXIT_CODE;
+}