1 files changed, 95 insertions, 0 deletions
diff --git a/gcc/gencodes.cc b/gcc/gencodes.cc
new file mode 100644
index 0000000..328496a
--- /dev/null
+++ b/gcc/gencodes.cc
@@ -0,0 +1,95 @@
+/* Generate from machine description:
+   - some macros CODE_FOR_... giving the insn_code_number value
+   for each of the defined standard insn names.
+   Copyright (C) 1987-2022 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/>.  */
+
+
+#include "bconfig.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "rtl.h"
+#include "errors.h"
+#include "gensupport.h"
+
+static void
+gen_insn (md_rtx_info *info)
+{
+  const char *name = XSTR (info->def, 0);
+  int truth = maybe_eval_c_test (XSTR (info->def, 2));
+
+  /* Don't mention instructions whose names are the null string
+     or begin with '*'.  They are in the machine description just
+     to be recognized.  */
+  if (name[0] != 0 && name[0] != '*')
+    {
+      if (truth == 0)
+	printf (",\n   CODE_FOR_%s = CODE_FOR_nothing", name);
+      else
+	printf (",\n  CODE_FOR_%s = %d", name, info->index);
+    }
+}
+
+int
+main (int argc, const char **argv)
+{
+  progname = "gencodes";
+
+  /* We need to see all the possibilities.  Elided insns may have
+     direct references to CODE_FOR_xxx in C code.  */
+  insn_elision = 0;
+
+  if (!init_rtx_reader_args (argc, argv))
+    return (FATAL_EXIT_CODE);
+
+  printf ("\
+/* Generated automatically by the program `gencodes'\n\
+   from the machine description file `md'.  */\n\
+\n\
+#ifndef GCC_INSN_CODES_H\n\
+#define GCC_INSN_CODES_H\n\
+\n\
+enum insn_code {\n\
+  CODE_FOR_nothing = 0");
+
+  /* Read the machine description.  */
+
+  md_rtx_info info;
+  while (read_md_rtx (&info))
+    switch (GET_CODE (info.def))
+      {
+      case DEFINE_INSN:
+      case DEFINE_EXPAND:
+	gen_insn (&info);
+	break;
+
+      default:
+	break;
+    }
+
+  printf ("\n};\n\
+\n\
+const unsigned int NUM_INSN_CODES = %d;\n\
+#endif /* GCC_INSN_CODES_H */\n", get_num_insn_codes ());
+
+  if (ferror (stdout) || fflush (stdout) || fclose (stdout))
+    return FATAL_EXIT_CODE;
+
+  return SUCCESS_EXIT_CODE;
+}