GCC 4.2.0 release.

1 files changed, 194 insertions, 0 deletions

diff --git a/contrib/gcc/opth-gen.awk b/contrib/gcc/opth-gen.awk
new file mode 100644
index 000000000000..e7ffc1a646eb
--- /dev/null
+++ b/contrib/gcc/opth-gen.awk
@@ -0,0 +1,194 @@
+#  Copyright (C) 2003,2004,2005,2006 Free Software Foundation, Inc.
+#  Contributed by Kelley Cook, June 2004.
+#  Original code from Neil Booth, May 2003.
+#
+# This program 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.
+# 
+# This program 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 this program; if not, write to the Free Software
+# Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+# This Awk script reads in the option records generated from 
+# opt-gather.awk, combines the flags of duplicate options and generates a
+# C header file.
+#
+# This program uses functions from opt-functions.awk
+# Usage: awk -f opt-functions.awk -f opth-gen.awk < inputfile > options.h
+
+BEGIN {
+	n_opts = 0
+	n_langs = 0
+	n_extra_masks = 0
+	quote = "\042"
+	comma = ","
+	FS=SUBSEP
+}
+
+# Collect the text and flags of each option into an array
+	{
+		if ($1 == "Language") {
+			langs[n_langs] = $2
+			n_langs++;
+		}
+		else {
+			name = opt_args("Mask", $1)
+			if (name == "") {
+				opts[n_opts]  = $1
+				flags[n_opts] = $2
+				help[n_opts]  = $3
+				n_opts++;
+			}
+			else {
+				extra_masks[n_extra_masks++] = name
+			}
+		}
+	}
+
+# Dump out an enumeration into a .h file.
+# Combine the flags of duplicate options.
+END {
+print "/* This file is auto-generated by opts.sh.  */"
+print ""
+print "#ifndef OPTIONS_H"
+print "#define OPTIONS_H"
+print ""
+print "extern int target_flags;"
+print ""
+
+for (i = 0; i < n_opts; i++) {
+	name = var_name(flags[i]);
+	if (name == "")
+		continue;
+
+	print "extern " var_type(flags[i]) name ";"
+}
+print ""
+
+for (i = 0; i < n_opts; i++) {
+	name = opt_args("Mask", flags[i])
+	vname = var_name(flags[i])
+	mask = "MASK_"
+	if (vname != "") {
+		mask = "OPTION_MASK_"
+	}
+	if (name != "" && !flag_set_p("MaskExists", flags[i]))
+		print "#define " mask name " (1 << " masknum[vname]++ ")"
+}
+for (i = 0; i < n_extra_masks; i++) {
+	print "#define MASK_" extra_masks[i] " (1 << " masknum[""]++ ")"
+}
+
+for (var in masknum) {
+	if (masknum[var] > 31) {
+		if (var == "")
+			print "#error too many target masks"
+		else
+			print "#error too many masks for " var
+	}
+}
+print ""
+
+for (i = 0; i < n_opts; i++) {
+	name = opt_args("Mask", flags[i])
+	vname = var_name(flags[i])
+	macro = "OPTION_"
+	mask = "OPTION_MASK_"
+	if (vname == "") {
+		vname = "target_flags"
+		macro = "TARGET_"
+		mask = "MASK_"
+	}
+	if (name != "" && !flag_set_p("MaskExists", flags[i]))
+		print "#define " macro name \
+		      " ((" vname " & " mask name ") != 0)"
+}
+for (i = 0; i < n_extra_masks; i++) {
+	print "#define TARGET_" extra_masks[i] \
+	      " ((target_flags & MASK_" extra_masks[i] ") != 0)"
+}
+print ""
+
+for (i = 0; i < n_opts; i++) {
+	opt = opt_args("InverseMask", flags[i])
+	if (opt ~ ",") {
+		vname = var_name(flags[i])
+		macro = "OPTION_"
+		mask = "OPTION_MASK_"
+		if (vname == "") {
+			vname = "target_flags"
+			macro = "TARGET_"
+			mask = "MASK_"
+		}
+		print "#define " macro nth_arg(1, opt) \
+		      " ((" vname " & " mask nth_arg(0, opt) ") == 0)"
+	}
+}
+print ""
+
+for (i = 0; i < n_langs; i++) {
+	macros[i] = "CL_" langs[i]
+	gsub( "[^A-Za-z0-9_]", "X", macros[i] )
+	s = substr("            ", length (macros[i]))
+	print "#define " macros[i] s " (1 << " i ")"
+    }
+
+print ""
+print "enum opt_code"
+print "{"
+	
+for (i = 0; i < n_opts; i++)
+	back_chain[i] = "N_OPTS";
+
+for (i = 0; i < n_opts; i++) {
+	# Combine the flags of identical switches.  Switches
+	# appear many times if they are handled by many front
+	# ends, for example.
+	while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
+		flags[i + 1] = flags[i] " " flags[i + 1];
+		i++;
+	}
+
+	len = length (opts[i]);
+	enum = "OPT_" opts[i]
+	if (opts[i] == "finline-limit=")
+		enum = enum "eq"
+	gsub ("[^A-Za-z0-9]", "_", enum)
+
+	# If this switch takes joined arguments, back-chain all
+	# subsequent switches to it for which it is a prefix.  If
+	# a later switch S is a longer prefix of a switch T, T
+	# will be back-chained to S in a later iteration of this
+	# for() loop, which is what we want.
+	if (flag_set_p("Joined.*", flags[i])) {
+		for (j = i + 1; j < n_opts; j++) {
+			if (substr (opts[j], 1, len) != opts[i])
+				break;
+			back_chain[j] = enum;
+		}
+	}
+
+	s = substr("                                     ", length (opts[i]))
+	if (i + 1 == n_opts)
+		comma = ""
+
+	if (help[i] == "")
+		hlp = "0"
+	else
+		hlp = "N_(\"" help[i] "\")";
+
+	print "  " enum "," s "/* -" opts[i] " */"
+}
+
+print "  N_OPTS"
+print "};"
+print ""
+print "#endif /* OPTIONS_H */"
+}