From af0c51ac87ab2a87caa03fa108f0d164987a2764 Mon Sep 17 00:00:00 2001 From: Ben Cheng Date: Thu, 28 Mar 2013 11:14:20 -0700 Subject: [GCC 4.8] Initial check-in of GCC 4.8.0 Change-Id: I0719d8a6d0f69b367a6ab6f10eb75622dbf12771 --- gcc-4.8/gcc/opt-functions.awk | 346 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 346 insertions(+) create mode 100644 gcc-4.8/gcc/opt-functions.awk (limited to 'gcc-4.8/gcc/opt-functions.awk') diff --git a/gcc-4.8/gcc/opt-functions.awk b/gcc-4.8/gcc/opt-functions.awk new file mode 100644 index 000000000..dd8497004 --- /dev/null +++ b/gcc-4.8/gcc/opt-functions.awk @@ -0,0 +1,346 @@ +# Copyright (C) 2003-2013 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 3, 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; see the file COPYING3. If not see +# . + +# Some common subroutines for use by opt[ch]-gen.awk. + +# Define some helpful character classes, for portability. +BEGIN { + lower = "abcdefghijklmnopqrstuvwxyz" + upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + digit = "0123456789" + alnum = lower "" upper "" digit +} + +# Return nonzero if FLAGS contains a flag matching REGEX. +function flag_set_p(regex, flags) +{ + # Ignore the arguments of flags with arguments. + gsub ("\\([^)]+\\)", "", flags); + return (" " flags " ") ~ (" " regex " ") +} + +# Return STRING if FLAGS contains a flag matching regexp REGEX, +# otherwise return the empty string. +function test_flag(regex, flags, string) +{ + if (flag_set_p(regex, flags)) + return string + return "" +} + +# Return a field initializer, with trailing comma, for a field that is +# 1 if FLAGS contains a flag matching REGEX and 0 otherwise. +function flag_init(regex, flags) +{ + if (flag_set_p(regex, flags)) + return "1 /* " regex " */, " + else + return "0, " +} + +# If FLAGS contains a "NAME(...argument...)" flag, return the value +# of the argument. Return the empty string otherwise. +function opt_args(name, flags) +{ + flags = " " flags + if (flags !~ " " name "\\(") + return "" + sub(".* " name "\\(", "", flags) + if (flags ~ "^{") + { + sub ("^{", "", flags) + sub("}\\).*", "", flags) + } + else + sub("\\).*", "", flags) + + return flags +} + +# Return the Nth comma-separated element of S. Return the empty string +# if S does not contain N elements. +function nth_arg(n, s) +{ + while (n-- > 0) { + if (s !~ ",") + return "" + sub("[^,]*, *", "", s) + } + sub(",.*", "", s) + return s +} + +# Return a bitmask of CL_* values for option flags FLAGS. +function switch_flags (flags) +{ + result = "0" + for (j = 0; j < n_langs; j++) { + regex = langs[j] + gsub ( "\\+", "\\+", regex ) + result = result test_flag(regex, flags, " | " macros[j]) + } + result = result \ + test_flag("Common", flags, " | CL_COMMON") \ + test_flag("Target", flags, " | CL_TARGET") \ + test_flag("Driver", flags, " | CL_DRIVER") \ + test_flag("Joined", flags, " | CL_JOINED") \ + test_flag("JoinedOrMissing", flags, " | CL_JOINED") \ + test_flag("Separate", flags, " | CL_SEPARATE") \ + test_flag("Undocumented", flags, " | CL_UNDOCUMENTED") \ + test_flag("NoDWARFRecord", flags, " | CL_NO_DWARF_RECORD") \ + test_flag("Warning", flags, " | CL_WARNING") \ + test_flag("Optimization", flags, " | CL_OPTIMIZATION") + sub( "^0 \\| ", "", result ) + return result +} + +# Return bit-field initializers for option flags FLAGS. +function switch_bit_fields (flags) +{ + vn = var_name(flags); + if (host_wide_int[vn] == "yes") + hwi = "Host_Wide_Int" + else + hwi = "" + result = "" + sep_args = opt_args("Args", flags) + if (sep_args == "") + sep_args = 0 + else + sep_args-- + result = result sep_args ", " + + result = result \ + flag_init("SeparateAlias", flags) \ + flag_init("NegativeAlias", flags) \ + flag_init("NoDriverArg", flags) \ + flag_init("RejectDriver", flags) \ + flag_init("RejectNegative", flags) \ + flag_init("JoinedOrMissing", flags) \ + flag_init("UInteger", flags) \ + flag_init("Host_Wide_Int", hwi) \ + flag_init("ToLower", flags) \ + flag_init("Report", flags) + + sub(", $", "", result) + return result +} + +# If FLAGS includes a Var flag, return the name of the variable it specifies. +# Return the empty string otherwise. +function var_name(flags) +{ + return nth_arg(0, opt_args("Var", flags)) +} + +# Return the name of the variable if FLAGS has a HOST_WIDE_INT variable. +# Return the empty string otherwise. +function host_wide_int_var_name(flags) +{ + split (flags, array, "[ \t]+") + if (array[1] == "HOST_WIDE_INT") + return array[2] + else + return "" +} + +# Return true if the option described by FLAGS has a globally-visible state. +function global_state_p(flags) +{ + return (var_name(flags) != "" \ + || opt_args("Mask", flags) != "" \ + || opt_args("InverseMask", flags) != "") +} + +# Return true if the option described by FLAGS must have some state +# associated with it. +function needs_state_p(flags) +{ + return (flag_set_p("Target", flags) \ + && !flag_set_p("Alias.*", flags) \ + && !flag_set_p("Ignore", flags)) +} + +# If FLAGS describes an option that needs state without a public +# variable name, return the name of that field, minus the initial +# "x_", otherwise return "". NAME is the name of the option. +function static_var(name, flags) +{ + if (global_state_p(flags) || !needs_state_p(flags)) + return "" + gsub ("[^" alnum "]", "_", name) + return "VAR_" name +} + +# Return the type of variable that should be associated with the given flags. +function var_type(flags) +{ + if (flag_set_p("Defer", flags)) + return "void *" + else if (flag_set_p("Enum.*", flags)) { + en = opt_args("Enum", flags); + return enum_type[en] " " + } + else if (!flag_set_p("Joined.*", flags) && !flag_set_p("Separate", flags)) + return "int " + else if (flag_set_p("UInteger", flags)) + return "int " + else + return "const char *" +} + +# Return the type of variable that should be associated with the given flags +# for use within a structure. Simple variables are changed to signed char +# type instead of int to save space. +function var_type_struct(flags) +{ + if (flag_set_p("UInteger", flags)) + return "int " + else if (flag_set_p("Enum.*", flags)) { + en = opt_args("Enum", flags); + return enum_type[en] " " + } + else if (!flag_set_p("Joined.*", flags) && !flag_set_p("Separate", flags)) { + if (flag_set_p(".*Mask.*", flags)) { + if (host_wide_int[var_name(flags)] == "yes") + return "HOST_WIDE_INT " + else + return "int " + } + else + return "signed char " + } + else + return "const char *" +} + +# Given that an option has flags FLAGS, return an initializer for the +# "var_enum", "var_type" and "var_value" fields of its cl_options[] entry. +function var_set(flags) +{ + if (flag_set_p("Defer", flags)) + return "0, CLVC_DEFER, 0" + s = nth_arg(1, opt_args("Var", flags)) + if (s != "") + return "0, CLVC_EQUAL, " s + s = opt_args("Mask", flags); + if (s != "") { + vn = var_name(flags); + if (vn) + return "0, CLVC_BIT_SET, OPTION_MASK_" s + else + return "0, CLVC_BIT_SET, MASK_" s + } + s = nth_arg(0, opt_args("InverseMask", flags)); + if (s != "") { + vn = var_name(flags); + if (vn) + return "0, CLVC_BIT_CLEAR, OPTION_MASK_" s + else + return "0, CLVC_BIT_CLEAR, MASK_" s + } + if (flag_set_p("Enum.*", flags)) { + en = opt_args("Enum", flags); + return enum_index[en] ", CLVC_ENUM, 0" + } + if (var_type(flags) == "const char *") + return "0, CLVC_STRING, 0" + return "0, CLVC_BOOLEAN, 0" +} + +# Given that an option called NAME has flags FLAGS, return an initializer +# for the "flag_var" field of its cl_options[] entry. +function var_ref(name, flags) +{ + name = var_name(flags) static_var(name, flags) + if (name != "") + return "offsetof (struct gcc_options, x_" name ")" + if (opt_args("Mask", flags) != "") + return "offsetof (struct gcc_options, x_target_flags)" + if (opt_args("InverseMask", flags) != "") + return "offsetof (struct gcc_options, x_target_flags)" + return "-1" +} + +# Given the option called NAME return a sanitized version of its name. +function opt_sanitized_name(name) +{ + gsub ("[^" alnum "]", "_", name) + return name +} + +# Given the option called NAME return the appropriate enum for it. +function opt_enum(name) +{ + return "OPT_" opt_sanitized_name(name) +} + +# Given the language called NAME return a sanitized version of its name. +function lang_sanitized_name(name) +{ + gsub( "[^" alnum "_]", "X", name ) + return name +} + +# Search for a valid var_name among all OPTS equal to option NAME. +# If not found, return "". +function search_var_name(name, opt_numbers, opts, flags, n_opts) +{ + opt_var_name = var_name(flags[opt_numbers[name]]); + if (opt_var_name != "") { + return opt_var_name; + } + for (k = 0; k < n_opts; k++) { + if (opts[k] == name && var_name(flags[k]) != "") { + return var_name(flags[k]); + } + } + return "" +} + +# Handle LangEnabledBy(ENABLED_BY_LANGS, ENABLEDBY_NAME, ENABLEDBY_POSARG, +# ENABLEDBY_NEGARG). This function does not return anything. +function lang_enabled_by(enabledby_langs, enabledby_name, enabledby_posarg, enabledby_negarg) +{ + n_enabledby_arg_langs = split(enabledby_langs, enabledby_arg_langs, " "); + enabledby_index = opt_numbers[enabledby_name]; + if (enabledby_index == "") { + print "#error LangEnabledby: " enabledby_name + } else { + if (enabledby_posarg != "" && enabledby_negarg != "") { + with_args = "," enabledby_posarg "," enabledby_negarg + } else if (enabledby_posarg == "" && enabledby_negarg == "") { + with_args = "" + } else { + print "#error LangEnabledBy("enabledby_langs","enabledby_name", " \ + enabledby_posarg", " enabledby_negargs \ + ") with three arguments, it should have either 2 or 4" + } + + for (j = 1; j <= n_enabledby_arg_langs; j++) { + lang_name = lang_sanitized_name(enabledby_arg_langs[j]); + lang_index = lang_numbers[enabledby_arg_langs[j]]; + if (enables[lang_name,enabledby_name] == "") { + enabledby[lang_name,n_enabledby_lang[lang_index]] = enabledby_name; + n_enabledby_lang[lang_index]++; + } + enables[lang_name,enabledby_name] = enables[lang_name,enabledby_name] opts[i] with_args ";"; + } + } +} + -- cgit v1.2.3