diff options
Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/opth-gen.awk')
-rw-r--r-- | gcc-4.2.1-5666.3/gcc/opth-gen.awk | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/opth-gen.awk b/gcc-4.2.1-5666.3/gcc/opth-gen.awk new file mode 100644 index 000000000..f3b3c0324 --- /dev/null +++ b/gcc-4.2.1-5666.3/gcc/opth-gen.awk @@ -0,0 +1,298 @@ +# 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 { +# APPLE LOCAL optimization pragmas 3124235/3420242 +print "/* This file is auto-generated by opth-gen.awk. */" +print "" +print "#ifndef OPTIONS_H" +print "#define OPTIONS_H" +print "" +# APPLE LOCAL begin optimization pragmas 3124235/3420242 +# libgcc2 does not use anything here (it better not), and +# doesn't include HOST_BITS_PER_INT, so won't compile if +# we include the contents normally. +print "#if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS)" +# APPLE LOCAL end optimization pragmas 3124235/3420242 +print "extern int target_flags;" +print "" + +for (i = 0; i < n_opts; i++) { + name = var_name(flags[i]); + if (name == "") + continue; + +# APPLE LOCAL begin optimization pragmas 3124235/3420242 + if (!flag_set_p("PerFunc", flags[i])) { + print "extern " var_type(flags[i]) name ";" + } else { + if (flag_set_p("VarExists")) + continue; + print "#define " name " (cl_pf_opts.fld_" 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[""]++ ")" +} + +# APPLE LOCAL begin added +print "/* Nonzero means do optimizations. -O." +print " Particular numeric values stand for particular amounts of optimization;" +print " thus, -O2 stores 2 here. However, the optimizations beyond the basic" +print " ones are not controlled directly by this variable. Instead, they are" +print " controlled by individual `flag_...' variables that are defaulted" +print " based on this variable. */" + +print "#define optimize (cl_pf_opts.fld_optimize)" + +print "" +print "/* Nonzero means optimize for size. -Os." +print " The only valid values are zero and nonzero. When optimize_size is" +print " nonzero, optimize defaults to 2, but certain individual code" +print " bloating optimizations are disabled. */" + +print "#define optimize_size (cl_pf_opts.fld_optimize_size)" +print "" + +print "/* Flags which may be changed per function. */" +count = 0 +print "struct cl_perfunc_opts {" + +for (i = 0; i < n_opts; i++) { + name = var_name(flags[i]); + if (name == "") + continue; + if (flag_set_p("VarExists", flags[i])) + continue; + if (!flag_set_p("PerFunc", flags[i])) + continue; + if (!flag_set_p("VarUint", flags[i])) + { + print " unsigned int fld_" name ":1;" + count++ + } +} + +print " unsigned int fld_optimize_size:1;" +count++ + +# Explicit padding so there are no holes, which might be +# handled strangely by the hashing and comparison functions. +# FIXME: A full word of padding is used in the case where we're +# already at a word boundary; this is currently irrelevant. + +print " unsigned int padding: (HOST_BITS_PER_INT-("count"-(" count "/HOST_BITS_PER_INT)*HOST_BITS_PER_INT));" + +for (i = 0; i < n_opts; i++) { + name = var_name(flags[i]); + if (name == "") + continue; + if (flag_set_p("VarExists", flags[i])) + continue; + if (!flag_set_p("PerFunc", flags[i])) + continue; + if (flag_set_p("VarUint", flags[i])) + print " int fld_" name ";" +} + +print " int fld_optimize;" +print "};" +print "" +print "/* cl_pf_opts changes dynamically as pragmas are handled. */" +print "extern struct cl_perfunc_opts cl_pf_opts;" +print "/* " quote "raw" quote " options are before command line parsing. */" +print "extern struct cl_perfunc_opts cl_pf_opts_raw;" +print "/* " quote "cooked" quote " options are after command line parsing. */" +print "extern struct cl_perfunc_opts cl_pf_opts_cooked;" + +for (i = 0; i < n_opts; i++) { + name = var_name(flags[i]); + if (name == "") + continue; + if (flag_set_p("VarExists", flags[i])) + continue; + if (!flag_set_p("PerFunc", flags[i])) + continue; + if (!flag_set_p("VarUint", flags[i])) + print "extern int cl_opt_access_func_" name " (int, unsigned int);" +} + +print "extern int cl_opt_access_func_optimize_size (int, unsigned int);" +# APPLE LOCAL end added +# APPLE LOCAL end optimization pragmas 3124235/3420242 + +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 ")" + } +# APPLE LOCAL iframework for 4.3 4094959 +print "#define CL_LANG_ALL ((1 << " n_langs ") - 1)" + +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 "" +# APPLE LOCAL optimization pragmas 3124235/3420242 +print "#endif /* IN_LIBGCC2 || IN_TARGET_LIBS */" +print "#endif /* OPTIONS_H */" +} |