CbC/CbC_gcc: gcc/opts.c comparison

comparison gcc/opts.c @ 67:f6334be47118

update gcc from gcc-4.6-20100522 to gcc-4.6-20110318

author	nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
date	Tue, 22 Mar 2011 17:18:12 +0900
parents	b7f97abdc517
children	04ced10e8804

comparison

equal deleted inserted replaced

-:65488c3d617d
+:f6334be47118
 /* Command line option handling.
-Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
 Free Software Foundation, Inc.
 Contributed by Neil Booth.
 This file is part of GCC.
 #include "config.h"
 #include "system.h"
 #include "intl.h"
 #include "coretypes.h"
-#include "tm.h"
+#include "tm.h" /* Needed by rtl.h and used for STACK_CHECK_BUILTIN,
-#include "tree.h"
+		   STACK_CHECK_STATIC_BUILTIN, DEFAULT_GDB_EXTENSIONS,
-#include "rtl.h"
+		   DWARF2_DEBUGGING_INFO and DBX_DEBUGGING_INFO.  */
-#include "expr.h"
+#include "rtl.h" /* Needed by insn-attr.h.  */
-#include "ggc.h"
-#include "output.h"
-#include "langhooks.h"
 #include "opts.h"
 #include "options.h"
 #include "flags.h"
-#include "toplev.h"
 #include "params.h"
 #include "diagnostic.h"
-#include "tm_p.h"		/* For OPTIMIZATION_OPTIONS.  */
+#include "opts-diagnostic.h"
-#include "insn-attr.h"		/* For INSN_SCHEDULING.  */
+#include "insn-attr.h"		/* For INSN_SCHEDULING and DELAY_SLOTS.  */
 #include "target.h"
-#include "tree-pass.h"
-#include "dbgcnt.h"
-#include "debug.h"
-#include "plugin.h"
-#include "except.h"
-#include "lto-streamer.h"
-/* Value of the -G xx switch, and whether it was passed or not.  */
-unsigned HOST_WIDE_INT g_switch_value;
-bool g_switch_set;
-/* Same for selective scheduling.  */
-bool sel_sched_switch_set;
-/* True if we should exit after parsing options.  */
-bool exit_after_options;
-/* True to warn about any objects definitions whose size is larger
-than N bytes.  Also want about function definitions whose returned
-values are larger than N bytes, where N is `larger_than_size'.  */
-bool warn_larger_than;
-HOST_WIDE_INT larger_than_size;
-/* True to warn about any function whose frame size is larger
-* than N bytes. */
-bool warn_frame_larger_than;
-HOST_WIDE_INT frame_larger_than_size;
-/* Type(s) of debugging information we are producing (if any).  See
-flags.h for the definitions of the different possible types of
-debugging information.  */
-enum debug_info_type write_symbols = NO_DEBUG;
-/* Level of debugging information we are producing.  See flags.h for
-the definitions of the different possible levels.  */
-enum debug_info_level debug_info_level = DINFO_LEVEL_NONE;
-/* A major contribution to object and executable size is debug
-information size.  A major contribution to debug information size
-is struct descriptions replicated in several object files. The
-following flags attempt to reduce this information.  The basic
-idea is to not emit struct debugging information in the current
-compilation unit when that information will be generated by
-another compilation unit.
-Debug information for a struct defined in the current source
-file should be generated in the object file.  Likewise the
-debug information for a struct defined in a header should be
-generated in the object file of the corresponding source file.
-Both of these case are handled when the base name of the file of
-the struct definition matches the base name of the source file
-of the current compilation unit.  This matching emits minimal
-struct debugging information.
-The base file name matching rule above will fail to emit debug
-information for structs defined in system headers.  So a second
-category of files includes system headers in addition to files
-with matching bases.
-The remaining types of files are library headers and application
-headers.  We cannot currently distinguish these two types.  */
-enum debug_struct_file
-{
-DINFO_STRUCT_FILE_NONE,   /* Debug no structs. */
-DINFO_STRUCT_FILE_BASE,   /* Debug structs defined in files with the
-same base name as the compilation unit. */
-DINFO_STRUCT_FILE_SYS,    /* Also debug structs defined in system
-header files.  */
-DINFO_STRUCT_FILE_ANY     /* Debug structs defined in all files. */
-};
-/* Generic structs (e.g. templates not explicitly specialized)
-may not have a compilation unit associated with them, and so
-may need to be treated differently from ordinary structs.
-Structs only handled by reference (indirectly), will also usually
-not need as much debugging information.  */
-static enum debug_struct_file debug_struct_ordinary[DINFO_USAGE_NUM_ENUMS]
-= { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY };
-static enum debug_struct_file debug_struct_generic[DINFO_USAGE_NUM_ENUMS]
-= { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY };
 /* Parse the -femit-struct-debug-detailed option value
 and set the flag variables. */
 #define MATCH( prefix, string ) \
 ((strncmp (prefix, string, sizeof prefix - 1) == 0) \
 ? ((string += sizeof prefix - 1), 1) : 0)
 void
-set_struct_debug_option (const char *spec)
+set_struct_debug_option (struct gcc_options *opts, location_t loc,
+			 const char *spec)
 {
 /* various labels for comparison */
-static char dfn_lbl[] = "dfn:", dir_lbl[] = "dir:", ind_lbl[] = "ind:";
+static const char dfn_lbl[] = "dfn:", dir_lbl[] = "dir:", ind_lbl[] = "ind:";
-static char ord_lbl[] = "ord:", gen_lbl[] = "gen:";
+static const char ord_lbl[] = "ord:", gen_lbl[] = "gen:";
-static char none_lbl[] = "none", any_lbl[] = "any";
+static const char none_lbl[] = "none", any_lbl[] = "any";
-static char base_lbl[] = "base", sys_lbl[] = "sys";
+static const char base_lbl[] = "base", sys_lbl[] = "sys";
 enum debug_struct_file files = DINFO_STRUCT_FILE_ANY;
 /* Default is to apply to as much as possible. */
 enum debug_info_usage usage = DINFO_USAGE_NUM_ENUMS;
 int ord = 1, gen = 1;
 else if (MATCH (sys_lbl, spec))
 files = DINFO_STRUCT_FILE_SYS;
 else if (MATCH (base_lbl, spec))
 files = DINFO_STRUCT_FILE_BASE;
 else
-error ("argument %qs to %<-femit-struct-debug-detailed%> not recognized",
+error_at (loc,
-spec);
+	      "argument %qs to %<-femit-struct-debug-detailed%> "
+	      "not recognized",
+	      spec);
 /* Effect the specification. */
 if (usage == DINFO_USAGE_NUM_ENUMS)
 {
 if (ord)
 {
-debug_struct_ordinary[DINFO_USAGE_DFN] = files;
+opts->x_debug_struct_ordinary[DINFO_USAGE_DFN] = files;
-debug_struct_ordinary[DINFO_USAGE_DIR_USE] = files;
+opts->x_debug_struct_ordinary[DINFO_USAGE_DIR_USE] = files;
-debug_struct_ordinary[DINFO_USAGE_IND_USE] = files;
+opts->x_debug_struct_ordinary[DINFO_USAGE_IND_USE] = files;
 }
 if (gen)
 {
-debug_struct_generic[DINFO_USAGE_DFN] = files;
+opts->x_debug_struct_generic[DINFO_USAGE_DFN] = files;
-debug_struct_generic[DINFO_USAGE_DIR_USE] = files;
+opts->x_debug_struct_generic[DINFO_USAGE_DIR_USE] = files;
-debug_struct_generic[DINFO_USAGE_IND_USE] = files;
+opts->x_debug_struct_generic[DINFO_USAGE_IND_USE] = files;
 }
 }
 else
 {
 if (ord)
-debug_struct_ordinary[usage] = files;
+opts->x_debug_struct_ordinary[usage] = files;
 if (gen)
-debug_struct_generic[usage] = files;
+opts->x_debug_struct_generic[usage] = files;
 }
 if (*spec == ',')
-set_struct_debug_option (spec+1);
+set_struct_debug_option (opts, loc, spec+1);
 else
 {
 /* No more -femit-struct-debug-detailed specifications.
 Do final checks. */
 if (*spec != '\0')
-	error ("argument %qs to %<-femit-struct-debug-detailed%> unknown",
+	error_at (loc,
-spec);
+		  "argument %qs to %<-femit-struct-debug-detailed%> unknown",
-if (debug_struct_ordinary[DINFO_USAGE_DIR_USE]
+		  spec);
-		< debug_struct_ordinary[DINFO_USAGE_IND_USE]
+if (opts->x_debug_struct_ordinary[DINFO_USAGE_DIR_USE]
-	  || debug_struct_generic[DINFO_USAGE_DIR_USE]
+		< opts->x_debug_struct_ordinary[DINFO_USAGE_IND_USE]
-		< debug_struct_generic[DINFO_USAGE_IND_USE])
+	  || opts->x_debug_struct_generic[DINFO_USAGE_DIR_USE]
-	error ("%<-femit-struct-debug-detailed=dir:...%> must allow at least"
+		< opts->x_debug_struct_generic[DINFO_USAGE_IND_USE])
-" as much as %<-femit-struct-debug-detailed=ind:...%>");
+	error_at (loc,
+		  "%<-femit-struct-debug-detailed=dir:...%> must allow "
+		  "at least as much as "
+		  "%<-femit-struct-debug-detailed=ind:...%>");
+}
+}
+/* Handle -ftree-vectorizer-verbose=VAL for options OPTS.  */
+static void
+vect_set_verbosity_level (struct gcc_options *opts, int val)
+{
+if (val < MAX_VERBOSITY_LEVEL)
+opts->x_user_vect_verbosity_level = (enum vect_verbosity_levels) val;
+else
+opts->x_user_vect_verbosity_level
+= (enum vect_verbosity_levels) (MAX_VERBOSITY_LEVEL - 1);
+}
+/* Strip off a legitimate source ending from the input string NAME of
+length LEN.  Rather than having to know the names used by all of
+our front ends, we strip off an ending of a period followed by
+up to five characters.  (Java uses ".class".)  */
+void
+strip_off_ending (char *name, int len)
+{
+int i;
+for (i = 2; i < 6 && len > i; i++)
+{
+if (name[len - i] == '.')
+	{
+	  name[len - i] = '\0';
+	  break;
+	}
 }
 }
 /* Find the base name of a path, stripping off both directories and
 a single final extension. */
-static int
+int
 base_of_path (const char *path, const char **base_out)
 {
 const char *base = path;
 const char *dot = 0;
 const char *p = path;
 dot = p;
 *base_out = base;
 return dot - base;
 }
-/* Match the base name of a file to the base name of a compilation unit. */
-static const char *main_input_basename;
-static int main_input_baselength;
-static int
-matches_main_base (const char *path)
-{
-/* Cache the last query. */
-static const char *last_path = NULL;
-static int last_match = 0;
-if (path != last_path)
-{
-const char *base;
-int length = base_of_path (path, &base);
-last_path = path;
-last_match = (length == main_input_baselength
-&& memcmp (base, main_input_basename, length) == 0);
-}
-return last_match;
-}
-#ifdef DEBUG_DEBUG_STRUCT
-static int
-dump_struct_debug (tree type, enum debug_info_usage usage,
-		   enum debug_struct_file criterion, int generic,
-		   int matches, int result)
-{
-/* Find the type name. */
-tree type_decl = TYPE_STUB_DECL (type);
-tree t = type_decl;
-const char *name = 0;
-if (TREE_CODE (t) == TYPE_DECL)
-t = DECL_NAME (t);
-if (t)
-name = IDENTIFIER_POINTER (t);
-fprintf (stderr, "	struct %d %s %s %s %s %d %p %s\n",
-	   criterion,
-DECL_IN_SYSTEM_HEADER (type_decl) ? "sys" : "usr",
-matches ? "bas" : "hdr",
-generic ? "gen" : "ord",
-usage == DINFO_USAGE_DFN ? ";" :
-usage == DINFO_USAGE_DIR_USE ? "." : "*",
-result,
-(void*) type_decl, name);
-return result;
-}
-#define DUMP_GSTRUCT(type, usage, criterion, generic, matches, result) \
-dump_struct_debug (type, usage, criterion, generic, matches, result)
-#else
-#define DUMP_GSTRUCT(type, usage, criterion, generic, matches, result) \
-(result)
-#endif
-bool
-should_emit_struct_debug (tree type, enum debug_info_usage usage)
-{
-enum debug_struct_file criterion;
-tree type_decl;
-bool generic = lang_hooks.types.generic_p (type);
-if (generic)
-criterion = debug_struct_generic[usage];
-else
-criterion = debug_struct_ordinary[usage];
-if (criterion == DINFO_STRUCT_FILE_NONE)
-return DUMP_GSTRUCT (type, usage, criterion, generic, false, false);
-if (criterion == DINFO_STRUCT_FILE_ANY)
-return DUMP_GSTRUCT (type, usage, criterion, generic, false, true);
-type_decl = TYPE_STUB_DECL (type);
-if (criterion == DINFO_STRUCT_FILE_SYS && DECL_IN_SYSTEM_HEADER (type_decl))
-return DUMP_GSTRUCT (type, usage, criterion, generic, false, true);
-if (matches_main_base (DECL_SOURCE_FILE (type_decl)))
-return DUMP_GSTRUCT (type, usage, criterion, generic, true, true);
-return DUMP_GSTRUCT (type, usage, criterion, generic, false, false);
-}
-/* Nonzero means use GNU-only extensions in the generated symbolic
-debugging information.  Currently, this only has an effect when
-write_symbols is set to DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG.  */
-bool use_gnu_debug_info_extensions;
-/* The default visibility for all symbols (unless overridden) */
-enum symbol_visibility default_visibility = VISIBILITY_DEFAULT;
-/* Global visibility options.  */
-struct visibility_flags visibility_options;
 /* What to print when a switch has no documentation.  */
 static const char undocumented_msg[] = N_("This switch lacks documentation");
-/* Used for bookkeeping on whether user set these flags so
--fprofile-use/-fprofile-generate does not use them.  */
-static bool profile_arc_flag_set, flag_profile_values_set;
-static bool flag_unroll_loops_set, flag_tracer_set;
-static bool flag_value_profile_transformations_set;
-static bool flag_peel_loops_set, flag_branch_probabilities_set;
-static bool flag_inline_functions_set, flag_ipa_cp_set, flag_ipa_cp_clone_set;
-static bool flag_predictive_commoning_set, flag_unswitch_loops_set, flag_gcse_after_reload_set;
-/* Functions excluded from profiling.  */
 typedef char *char_p; /* For DEF_VEC_P.  */
 DEF_VEC_P(char_p);
 DEF_VEC_ALLOC_P(char_p,heap);
-static VEC(char_p,heap) *flag_instrument_functions_exclude_functions;
+static void handle_param (struct gcc_options *opts,
-static VEC(char_p,heap) *flag_instrument_functions_exclude_files;
+			  struct gcc_options *opts_set, location_t loc,
+			  const char *carg);
-typedef const char *const_char_p; /* For DEF_VEC_P.  */
-DEF_VEC_P(const_char_p);
-DEF_VEC_ALLOC_P(const_char_p,heap);
-static VEC(const_char_p,heap) *ignored_options;
-/* Language specific warning pass for unused results.  */
-bool flag_warn_unused_result = false;
-/* Input file names.  */
-const char **in_fnames;
-unsigned num_in_fnames;
-static int common_handle_option (size_t scode, const char *arg, int value,
-				 unsigned int lang_mask, int kind);
-static void handle_param (const char *);
-static char *write_langs (unsigned int lang_mask);
-static void complain_wrong_lang (const char *, const struct cl_option *,
-				 unsigned int lang_mask);
 static void set_debug_level (enum debug_info_type type, int extended,
-			     const char *arg);
+			     const char *arg, struct gcc_options *opts,
+			     struct gcc_options *opts_set,
-/* If ARG is a non-negative integer made up solely of digits, return its
+			     location_t loc);
-value, otherwise return -1.  */
+static void set_fast_math_flags (struct gcc_options *opts, int set);
-static int
+static void decode_d_option (const char *arg, struct gcc_options *opts,
-integral_argument (const char *arg)
+			     location_t loc, diagnostic_context *dc);
-{
+static void set_unsafe_math_optimizations_flags (struct gcc_options *opts,
-const char *p = arg;
+						 int set);
+static void enable_warning_as_error (const char *arg, int value,
-while (*p && ISDIGIT (*p))
+				     unsigned int lang_mask,
-p++;
+				     const struct cl_option_handlers *handlers,
+				     struct gcc_options *opts,
-if (*p == '\0')
+				     struct gcc_options *opts_set,
-return atoi (arg);
+				     location_t loc,
+				     diagnostic_context *dc);
-return -1;
-}
+/* Handle a back-end option; arguments and return value as for
+handle_option.  */
-/* Return a malloced slash-separated list of languages in MASK.  */
-static char *
+bool
-write_langs (unsigned int mask)
+target_handle_option (struct gcc_options *opts,
-{
+		      struct gcc_options *opts_set,
-unsigned int n = 0, len = 0;
+		      const struct cl_decoded_option *decoded,
-const char *lang_name;
+		      unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
-char *result;
+		      location_t loc ATTRIBUTE_UNUSED,
+		      const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
-for (n = 0; (lang_name = lang_names[n]) != 0; n++)
+		      diagnostic_context *dc)
-if (mask & (1U << n))
+{
-len += strlen (lang_name) + 1;
+gcc_assert (opts == &global_options);
+gcc_assert (opts_set == &global_options_set);
-result = XNEWVEC (char, len);
+gcc_assert (dc == global_dc);
-len = 0;
+gcc_assert (decoded->canonical_option_num_elements <= 2);
-for (n = 0; (lang_name = lang_names[n]) != 0; n++)
+gcc_assert (kind == DK_UNSPECIFIED);
-if (mask & (1U << n))
+/* Although the location is not passed down to
-{
+targetm.handle_option, do not make assertions about its value;
-	if (len)
+options may come from optimize attributes and having the correct
-	  result[len++] = '/';
+location in the handler is not generally important.  */
-	strcpy (result + len, lang_name);
+return targetm.handle_option (decoded->opt_index, decoded->arg,
-	len += strlen (lang_name);
+				decoded->value);
 }
-result[len] = 0;
+/* Add comma-separated strings to a char_p vector.  */
-return result;
-}
-/* Complain that switch OPT_INDEX does not apply to this front end.  */
 static void
-complain_wrong_lang (const char *text, const struct cl_option *option,
+add_comma_separated_to_vector (void **pvec, const char *arg)
-		     unsigned int lang_mask)
-{
-char *ok_langs, *bad_lang;
-/* The LTO front end inherits all the options from the first front
-end that was used.  However, not all the original front end
-options make sense in LTO.
-A real solution would be to filter this in collect2, but collect2
-does not have access to all the option attributes to know what to
-filter.  So, in lto1 we silently accept inherited flags and do
-nothing about it.  */
-if (lang_mask & CL_LTO)
-return;
-ok_langs = write_langs (option->flags);
-bad_lang = write_langs (lang_mask);
-/* Eventually this should become a hard error IMO.  */
-warning (0, "command line option \"%s\" is valid for %s but not for %s",
-	   text, ok_langs, bad_lang);
-free (ok_langs);
-free (bad_lang);
-}
-/* Buffer the unknown option described by the string OPT.  Currently,
-we only complain about unknown -Wno-* options if they may have
-prevented a diagnostic. Otherwise, we just ignore them.
-Note that if we do complain, it is only as a warning, not an error;
-passing the compiler an unrecognised -Wno-* option should never
-change whether the compilation succeeds or fails.  */
-static void postpone_unknown_option_warning(const char *opt)
-{
-VEC_safe_push (const_char_p, heap, ignored_options, opt);
-}
-/* Produce a warning for each option previously buffered.  */
-void print_ignored_options (void)
-{
-location_t saved_loc = input_location;
-input_location = 0;
-while (!VEC_empty (const_char_p, ignored_options))
-{
-const char *opt;
-opt = VEC_pop (const_char_p, ignored_options);
-warning (0, "unrecognized command line option \"%s\"", opt);
-}
-input_location = saved_loc;
-}
-/* Handle option OPT_INDEX, and argument ARG, for the language
-indicated by LANG_MASK.  VALUE is true, unless no- form of an -f or
--W option was given.  KIND is the diagnostic_t if this is a
-diagnostics option, DK_UNSPECIFIED otherwise.  Returns false if the
-switch was invalid.  */
-bool
-handle_option (int opt_index, int value, const char *arg,
-		unsigned int lang_mask, int kind)
-{
-const struct cl_option *option = &cl_options[opt_index];
-if (option->flag_var)
-set_option (opt_index, value, arg, kind);
-if (option->flags & lang_mask)
-{
-if (lang_hooks.handle_option (opt_index, arg, value, kind) == 0)
-	return false;
-#ifdef ENABLE_LTO
-else
-	lto_register_user_option (opt_index, arg, value, lang_mask);
-#endif
-}
-if (option->flags & CL_COMMON)
-{
-if (common_handle_option (opt_index, arg, value, lang_mask, kind) == 0)
-	return false;
-#ifdef ENABLE_LTO
-else
-	lto_register_user_option (opt_index, arg, value, CL_COMMON);
-#endif
-}
-if (option->flags & CL_TARGET)
-{
-if (!targetm.handle_option (opt_index, arg, value))
-	return false;
-#ifdef ENABLE_LTO
-else
-	lto_register_user_option (opt_index, arg, value, CL_TARGET);
-#endif
-}
-return true;
-}
-/* Handle the switch beginning at ARGV for the language indicated by
-LANG_MASK.  Returns the number of switches consumed.  */
-static unsigned int
-read_cmdline_option (const char **argv, unsigned int lang_mask)
-{
-size_t opt_index;
-const char *opt, *arg = 0;
-char *dup = 0;
-int value = 1;
-unsigned int result = 0;
-const struct cl_option *option;
-opt = argv[0];
-opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET);
-if (opt_index == cl_options_count
-&& (opt[1] == 'W' || opt[1] == 'f' || opt[1] == 'm')
-&& opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-')
-{
-/* Drop the "no-" from negative switches.  */
-size_t len = strlen (opt) - 3;
-dup = XNEWVEC (char, len + 1);
-dup[0] = '-';
-dup[1] = opt[1];
-memcpy (dup + 2, opt + 5, len - 2 + 1);
-opt = dup;
-value = 0;
-opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET);
-if (opt_index == cl_options_count && opt[1] == 'W')
-	{
-	  /* We don't generate warnings for unknown -Wno-* options
-unless we issue diagnostics.  */
-	  postpone_unknown_option_warning (argv[0]);
-	  result = 1;
-	  goto done;
-	}
-}
-if (opt_index == cl_options_count)
-goto done;
-option = &cl_options[opt_index];
-/* Reject negative form of switches that don't take negatives as
-unrecognized.  */
-if (!value && (option->flags & CL_REJECT_NEGATIVE))
-goto done;
-/* We've recognized this switch.  */
-result = 1;
-/* Check to see if the option is disabled for this configuration.  */
-if (option->flags & CL_DISABLED)
-{
-error ("command line option %qs"
-	     " is not supported by this configuration", opt);
-goto done;
-}
-/* Sort out any argument the switch takes.  */
-if (option->flags & CL_JOINED)
-{
-/* Have arg point to the original switch.  This is because
-	 some code, such as disable_builtin_function, expects its
-	 argument to be persistent until the program exits.  */
-arg = argv[0] + cl_options[opt_index].opt_len + 1;
-if (!value)
-	arg += strlen ("no-");
-if (*arg == '\0' && !(option->flags & CL_MISSING_OK))
-	{
-	  if (option->flags & CL_SEPARATE)
-	    {
-	      arg = argv[1];
-	      result = 2;
-	    }
-	  else
-	    /* Missing argument.  */
-	    arg = NULL;
-	}
-}
-else if (option->flags & CL_SEPARATE)
-{
-arg = argv[1];
-result = 2;
-}
-/* Now we've swallowed any potential argument, complain if this
-is a switch for a different front end.  */
-if (!(option->flags & (lang_mask | CL_COMMON | CL_TARGET)))
-{
-complain_wrong_lang (argv[0], option, lang_mask);
-goto done;
-}
-else if ((option->flags & CL_TARGET)
-	   && (option->flags & CL_LANG_ALL)
-	   && !(option->flags & lang_mask))
-{
-/* Complain for target flag language mismatches if any languages
-	 are specified.  */
-complain_wrong_lang (argv[0], option, lang_mask);
-goto done;
-}
-if (arg == NULL && (option->flags & (CL_JOINED | CL_SEPARATE)))
-{
-if (!lang_hooks.missing_argument (opt, opt_index))
-	error ("missing argument to \"%s\"", opt);
-goto done;
-}
-/* If the switch takes an integer, convert it.  */
-if (arg && (option->flags & CL_UINTEGER))
-{
-value = integral_argument (arg);
-if (value == -1)
-	{
-	  error ("argument to \"%s\" should be a non-negative integer",
-		 option->opt_text);
-	  goto done;
-	}
-}
-if (!handle_option (opt_index, value, arg, lang_mask, DK_UNSPECIFIED))
-result = 0;
-done:
-if (dup)
-free (dup);
-return result;
-}
-/* Handle FILENAME from the command line.  */
-static void
-add_input_filename (const char *filename)
-{
-num_in_fnames++;
-in_fnames = XRESIZEVEC (const char *, in_fnames, num_in_fnames);
-in_fnames[num_in_fnames - 1] = filename;
-}
-/* Add comma-separated strings to a char_p vector.  */
-static void
-add_comma_separated_to_vector (VEC(char_p,heap) **pvec, const char* arg)
 {
 char *tmp;
 char *r;
 char *w;
 char *token_start;
+VEC(char_p,heap) *vec = (VEC(char_p,heap) *) *pvec;
 /* We never free this string.  */
 tmp = xstrdup (arg);
 r = tmp;
 {
 if (*r == ',')
 	{
 	  *w++ = '\0';
 	  ++r;
-	  VEC_safe_push (char_p, heap, *pvec, token_start);
+	  VEC_safe_push (char_p, heap, vec, token_start);
 	  token_start = w;
 	}
 if (*r == '\\' && r[1] == ',')
 	{
 	  *w++ = ',';
 	}
 else
 	*w++ = *r++;
 }
 if (*token_start != '\0')
-VEC_safe_push (char_p, heap, *pvec, token_start);
+VEC_safe_push (char_p, heap, vec, token_start);
-}
+*pvec = vec;
-/* Return whether we should exclude FNDECL from instrumentation.  */
+}
-bool
+/* Initialize OPTS and OPTS_SET before using them in parsing options.  */
-flag_instrument_functions_exclude_p (tree fndecl)
-{
+void
-if (VEC_length (char_p, flag_instrument_functions_exclude_functions) > 0)
+init_options_struct (struct gcc_options *opts, struct gcc_options *opts_set)
 {
-const char *name;
+size_t num_params = get_num_compiler_params ();
-int i;
-char *s;
+*opts = global_options_init;
+memset (opts_set, 0, sizeof (*opts_set));
-name = lang_hooks.decl_printable_name (fndecl, 0);
-for (i = 0;
+opts->x_param_values = XNEWVEC (int, num_params);
-	   VEC_iterate (char_p, flag_instrument_functions_exclude_functions,
+opts_set->x_param_values = XCNEWVEC (int, num_params);
-			i, s);
+init_param_values (opts->x_param_values);
-	   ++i)
-	{
+/* Use priority coloring if cover classes is not defined for the
-	  if (strstr (name, s) != NULL)
+target.  */
-	    return true;
+if (targetm.ira_cover_classes == NULL)
-	}
+opts->x_flag_ira_algorithm = IRA_ALGORITHM_PRIORITY;
-}
+/* Initialize whether `char' is signed.  */
-if (VEC_length (char_p, flag_instrument_functions_exclude_files) > 0)
+opts->x_flag_signed_char = DEFAULT_SIGNED_CHAR;
-{
+/* Set this to a special "uninitialized" value.  The actual default
-const char *name;
+is set after target options have been processed.  */
-int i;
+opts->x_flag_short_enums = 2;
-char *s;
+/* Initialize target_flags before targetm.target_option.optimization
-name = DECL_SOURCE_FILE (fndecl);
+so the latter can modify it.  */
-for (i = 0;
+opts->x_target_flags = targetm.default_target_flags;
-	   VEC_iterate (char_p, flag_instrument_functions_exclude_files, i, s);
-	   ++i)
+/* Some targets have ABI-specified unwind tables.  */
-	{
+opts->x_flag_unwind_tables = targetm.unwind_tables_default;
-	  if (strstr (name, s) != NULL)
-	    return true;
+/* Some targets have other target-specific initialization.  */
-	}
+targetm.target_option.init_struct (opts);
 }
-return false;
+/* If indicated by the optimization level LEVEL (-Os if SIZE is set,
-}
+-Ofast if FAST is set), apply the option DEFAULT_OPT to OPTS and
+OPTS_SET, diagnostic context DC, location LOC, with language mask
+LANG_MASK and option handlers HANDLERS.  */
-/* Decode and handle the vector of command line options.  LANG_MASK
-contains has a single bit set representing the current
-language.  */
 static void
-read_cmdline_options (unsigned int argc, const char **argv, unsigned int lang_mask)
+maybe_default_option (struct gcc_options *opts,
-{
+		      struct gcc_options *opts_set,
-unsigned int n, i;
+		      const struct default_options *default_opt,
+		      int level, bool size, bool fast,
-for (i = 1; i < argc; i += n)
+		      unsigned int lang_mask,
-{
+		      const struct cl_option_handlers *handlers,
-const char *opt = argv[i];
+		      location_t loc,
+		      diagnostic_context *dc)
-/* Interpret "-" or a non-switch as a file name.  */
+{
-if (opt[0] != '-' || opt[1] == '\0')
+const struct cl_option *option = &cl_options[default_opt->opt_index];
-	{
+bool enabled;
-	  if (main_input_filename == NULL)
-	    {
+if (size)
-	      main_input_filename = opt;
+gcc_assert (level == 2);
-	      main_input_baselength
+if (fast)
-		= base_of_path (main_input_filename, &main_input_basename);
+gcc_assert (level == 3);
-	    }
-	  add_input_filename (opt);
+switch (default_opt->levels)
-	  n = 1;
+{
-	  continue;
+case OPT_LEVELS_ALL:
-	}
+enabled = true;
+break;
-n = read_cmdline_option (argv + i, lang_mask);
+case OPT_LEVELS_0_ONLY:
-if (!n)
+enabled = (level == 0);
-	{
+break;
-	  n = 1;
-	  error ("unrecognized command line option \"%s\"", opt);
+case OPT_LEVELS_1_PLUS:
-	}
+enabled = (level >= 1);
-}
+break;
-}
+case OPT_LEVELS_1_PLUS_SPEED_ONLY:
-/* Parse command line options and set default flag values.  Do minimal
+enabled = (level >= 1 && !size);
-options processing.  */
+break;
+case OPT_LEVELS_2_PLUS:
+enabled = (level >= 2);
+break;
+case OPT_LEVELS_2_PLUS_SPEED_ONLY:
+enabled = (level >= 2 && !size);
+break;
+case OPT_LEVELS_3_PLUS:
+enabled = (level >= 3);
+break;
+case OPT_LEVELS_3_PLUS_AND_SIZE:
+enabled = (level >= 3 || size);
+break;
+case OPT_LEVELS_SIZE:
+enabled = size;
+break;
+case OPT_LEVELS_FAST:
+enabled = fast;
+break;
+case OPT_LEVELS_NONE:
+default:
+gcc_unreachable ();
+}
+if (enabled)
+handle_generated_option (opts, opts_set, default_opt->opt_index,
+			     default_opt->arg, default_opt->value,
+			     lang_mask, DK_UNSPECIFIED, loc,
+			     handlers, dc);
+else if (default_opt->arg == NULL
+	   && !(option->flags & CL_REJECT_NEGATIVE))
+handle_generated_option (opts, opts_set, default_opt->opt_index,
+			     default_opt->arg, !default_opt->value,
+			     lang_mask, DK_UNSPECIFIED, loc,
+			     handlers, dc);
+}
+/* As indicated by the optimization level LEVEL (-Os if SIZE is set,
+-Ofast if FAST is set), apply the options in array DEFAULT_OPTS to
+OPTS and OPTS_SET, diagnostic context DC, location LOC, with
+language mask LANG_MASK and option handlers HANDLERS.  */
+static void
+maybe_default_options (struct gcc_options *opts,
+		       struct gcc_options *opts_set,
+		       const struct default_options *default_opts,
+		       int level, bool size, bool fast,
+		       unsigned int lang_mask,
+		       const struct cl_option_handlers *handlers,
+		       location_t loc,
+		       diagnostic_context *dc)
+{
+size_t i;
+for (i = 0; default_opts[i].levels != OPT_LEVELS_NONE; i++)
+maybe_default_option (opts, opts_set, &default_opts[i],
+			  level, size, fast, lang_mask, handlers, loc, dc);
+}
+/* Table of options enabled by default at different levels.  */
+static const struct default_options default_options_table[] =
+{
+/* -O1 optimizations.  */
+{ OPT_LEVELS_1_PLUS, OPT_fdefer_pop, NULL, 1 },
+#ifdef DELAY_SLOTS
+{ OPT_LEVELS_1_PLUS, OPT_fdelayed_branch, NULL, 1 },
+#endif
+{ OPT_LEVELS_1_PLUS, OPT_fguess_branch_probability, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_fcprop_registers, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_fforward_propagate, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_fif_conversion, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_fif_conversion2, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_fipa_pure_const, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_fipa_reference, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_fipa_profile, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_fmerge_constants, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_fsplit_wide_types, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_ftree_ccp, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_ftree_bit_ccp, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_ftree_dce, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_ftree_dominator_opts, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_ftree_dse, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_ftree_ter, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_ftree_sra, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_ftree_copyrename, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_ftree_fre, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_ftree_copy_prop, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_ftree_sink, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_ftree_ch, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_fcombine_stack_adjustments, NULL, 1 },
+{ OPT_LEVELS_1_PLUS, OPT_fcompare_elim, NULL, 1 },
+/* -O2 optimizations.  */
+{ OPT_LEVELS_2_PLUS, OPT_finline_small_functions, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_findirect_inlining, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_fpartial_inlining, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_fthread_jumps, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_fcrossjumping, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_foptimize_sibling_calls, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_fcse_follow_jumps, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_fgcse, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_fexpensive_optimizations, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_frerun_cse_after_loop, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_fcaller_saves, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_fpeephole2, NULL, 1 },
+#ifdef INSN_SCHEDULING
+/* Only run the pre-regalloc scheduling pass if optimizing for speed.  */
+{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_fschedule_insns, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_fschedule_insns2, NULL, 1 },
+#endif
+{ OPT_LEVELS_2_PLUS, OPT_fregmove, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_fstrict_aliasing, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_fstrict_overflow, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_freorder_blocks, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_freorder_functions, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_ftree_vrp, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_ftree_builtin_call_dce, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_ftree_pre, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_ftree_switch_conversion, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_fipa_cp, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_fdevirtualize, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_fipa_sra, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_falign_loops, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_falign_jumps, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_falign_labels, NULL, 1 },
+{ OPT_LEVELS_2_PLUS, OPT_falign_functions, NULL, 1 },
+/* -O3 optimizations.  */
+{ OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribute_patterns, NULL, 1 },
+{ OPT_LEVELS_3_PLUS, OPT_fpredictive_commoning, NULL, 1 },
+/* Inlining of functions reducing size is a good idea with -Os
+regardless of them being declared inline.  */
+{ OPT_LEVELS_3_PLUS_AND_SIZE, OPT_finline_functions, NULL, 1 },
+{ OPT_LEVELS_3_PLUS, OPT_funswitch_loops, NULL, 1 },
+{ OPT_LEVELS_3_PLUS, OPT_fgcse_after_reload, NULL, 1 },
+{ OPT_LEVELS_3_PLUS, OPT_ftree_vectorize, NULL, 1 },
+{ OPT_LEVELS_3_PLUS, OPT_fipa_cp_clone, NULL, 1 },
+/* -Ofast adds optimizations to -O3.  */
+{ OPT_LEVELS_FAST, OPT_ffast_math, NULL, 1 },
+{ OPT_LEVELS_NONE, 0, NULL, 0 }
+};
+/* Default the options in OPTS and OPTS_SET based on the optimization
+settings in DECODED_OPTIONS and DECODED_OPTIONS_COUNT.  */
 void
-decode_options (unsigned int argc, const char **argv)
+default_options_optimization (struct gcc_options *opts,
-{
+			      struct gcc_options *opts_set,
-static bool first_time_p = true;
+			      struct cl_decoded_option *decoded_options,
-static int initial_min_crossjump_insns;
+			      unsigned int decoded_options_count,
-static int initial_max_fields_for_field_sensitive;
+			      location_t loc,
-static int initial_loop_invariant_max_bbs_in_loop;
+			      unsigned int lang_mask,
-static unsigned int initial_lang_mask;
+			      const struct cl_option_handlers *handlers,
+			      diagnostic_context *dc)
-unsigned int i, lang_mask;
+{
-int opt1;
+unsigned int i;
 int opt2;
-int opt3;
-int opt1_max;
-if (first_time_p)
-{
-/* Perform language-specific options initialization.  */
-initial_lang_mask = lang_mask = lang_hooks.init_options (argc, argv);
-lang_hooks.initialize_diagnostics (global_dc);
-/* Save initial values of parameters we reset.  */
-initial_min_crossjump_insns
-	= compiler_params[PARAM_MIN_CROSSJUMP_INSNS].value;
-initial_max_fields_for_field_sensitive
-	= compiler_params[PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE].value;
-initial_loop_invariant_max_bbs_in_loop
-	= compiler_params[PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP].value;
-}
-else
-lang_mask = initial_lang_mask;
 /* Scan to see what optimization level has been specified.  That will
 determine the default value of many flags.  */
-for (i = 1; i < argc; i++)
+for (i = 1; i < decoded_options_count; i++)
 {
-if (!strcmp (argv[i], "-O"))
+struct cl_decoded_option *opt = &decoded_options[i];
+switch (opt->opt_index)
 	{
-	  optimize = 1;
+	case OPT_O:
-	  optimize_size = 0;
+	  if (*opt->arg == '\0')
-	}
-else if (argv[i][0] == '-' && argv[i][1] == 'O')
-	{
-	  /* Handle -Os, -O2, -O3, -O69, ...  */
-	  const char *p = &argv[i][2];
-	  if ((p[0] == 's') && (p[1] == 0))
 	    {
-	      optimize_size = 1;
+	      opts->x_optimize = 1;
+	      opts->x_optimize_size = 0;
-	      /* Optimizing for size forces optimize to be 2.  */
+	      opts->x_optimize_fast = 0;
-	      optimize = 2;
 	    }
 	  else
 	    {
-	      const int optimize_val = read_integral_parameter (p, p - 2, -1);
+	      const int optimize_val = integral_argument (opt->arg);
-	      if (optimize_val != -1)
+	      if (optimize_val == -1)
+		error_at (loc,
+			  "argument to %qs should be a non-negative integer",
+			  "-O");
+	      else
 		{
-		  optimize = optimize_val;
+		  opts->x_optimize = optimize_val;
-		  if ((unsigned int) optimize > 255)
+		  if ((unsigned int) opts->x_optimize > 255)
-		    optimize = 255;
+		    opts->x_optimize = 255;
-		  optimize_size = 0;
+		  opts->x_optimize_size = 0;
+		  opts->x_optimize_fast = 0;
 		}
 	    }
+	  break;
+	case OPT_Os:
+	  opts->x_optimize_size = 1;
+	  /* Optimizing for size forces optimize to be 2.  */
+	  opts->x_optimize = 2;
+	  opts->x_optimize_fast = 0;
+	  break;
+	case OPT_Ofast:
+	  /* -Ofast only adds flags to -O3.  */
+	  opts->x_optimize_size = 0;
+	  opts->x_optimize = 3;
+	  opts->x_optimize_fast = 1;
+	  break;
+	default:
+	  /* Ignore other options in this prescan.  */
+	  break;
 	}
 }
-/* Use priority coloring if cover classes is not defined for the
+maybe_default_options (opts, opts_set, default_options_table,
-target.  */
+			 opts->x_optimize, opts->x_optimize_size,
-if (targetm.ira_cover_classes == NULL)
+			 opts->x_optimize_fast, lang_mask, handlers, loc, dc);
-flag_ira_algorithm = IRA_ALGORITHM_PRIORITY;
+/* -O2 param settings.  */
-/* -O1 optimizations.  */
+opt2 = (opts->x_optimize >= 2);
-opt1 = (optimize >= 1);
-flag_defer_pop = opt1;
-#ifdef DELAY_SLOTS
-flag_delayed_branch = opt1;
-#endif
-#ifdef CAN_DEBUG_WITHOUT_FP
-flag_omit_frame_pointer = opt1;
-#endif
-flag_guess_branch_prob = opt1;
-flag_cprop_registers = opt1;
-flag_forward_propagate = opt1;
-flag_if_conversion = opt1;
-flag_if_conversion2 = opt1;
-flag_ipa_pure_const = opt1;
-flag_ipa_reference = opt1;
-flag_ipa_profile = opt1;
-flag_merge_constants = opt1;
-flag_split_wide_types = opt1;
-flag_tree_ccp = opt1;
-flag_tree_dce = opt1;
-flag_tree_dom = opt1;
-flag_tree_dse = opt1;
-flag_tree_ter = opt1;
-flag_tree_sra = opt1;
-flag_tree_copyrename = opt1;
-flag_tree_fre = opt1;
-flag_tree_copy_prop = opt1;
-flag_tree_sink = opt1;
-flag_tree_ch = opt1;
-/* -O2 optimizations.  */
-opt2 = (optimize >= 2);
-flag_inline_small_functions = opt2;
-flag_indirect_inlining = opt2;
-flag_thread_jumps = opt2;
-flag_crossjumping = opt2;
-flag_optimize_sibling_calls = opt2;
-flag_cse_follow_jumps = opt2;
-flag_gcse = opt2;
-flag_expensive_optimizations = opt2;
-flag_rerun_cse_after_loop = opt2;
-flag_caller_saves = opt2;
-flag_peephole2 = opt2;
-#ifdef INSN_SCHEDULING
-/* Only run the pre-regalloc scheduling pass if optimizing for speed.  */
-flag_schedule_insns = opt2 && ! optimize_size;
-flag_schedule_insns_after_reload = opt2;
-#endif
-flag_regmove = opt2;
-flag_strict_aliasing = opt2;
-flag_strict_overflow = opt2;
-flag_reorder_blocks = opt2;
-flag_reorder_functions = opt2;
-flag_tree_vrp = opt2;
-flag_tree_builtin_call_dce = opt2;
-flag_tree_pre = opt2;
-flag_tree_switch_conversion = opt2;
-flag_ipa_cp = opt2;
-flag_ipa_sra = opt2;
 /* Track fields in field-sensitive alias analysis.  */
-set_param_value ("max-fields-for-field-sensitive",
+maybe_set_param_value
-		   (opt2) ? 100 : initial_max_fields_for_field_sensitive);
+(PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE,
+opt2 ? 100 : default_param_value (PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE),
+opts->x_param_values, opts_set->x_param_values);
 /* For -O1 only do loop invariant motion for very small loops.  */
-set_param_value ("loop-invariant-max-bbs-in-loop",
+maybe_set_param_value
-		   (opt2) ? initial_loop_invariant_max_bbs_in_loop : 1000);
+(PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP,
+opt2 ? default_param_value (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP) : 1000,
-/* -O3 optimizations.  */
+opts->x_param_values, opts_set->x_param_values);
-opt3 = (optimize >= 3);
-flag_predictive_commoning = opt3;
+if (opts->x_optimize_size)
-flag_inline_functions = opt3;
+/* We want to crossjump as much as possible.  */
-flag_unswitch_loops = opt3;
+maybe_set_param_value (PARAM_MIN_CROSSJUMP_INSNS, 1,
-flag_gcse_after_reload = opt3;
+			   opts->x_param_values, opts_set->x_param_values);
-flag_tree_vectorize = opt3;
-flag_ipa_cp_clone = opt3;
-if (flag_ipa_cp_clone)
-flag_ipa_cp = 1;
-/* Just -O1/-O0 optimizations.  */
-opt1_max = (optimize <= 1);
-align_loops = opt1_max;
-align_jumps = opt1_max;
-align_labels = opt1_max;
-align_functions = opt1_max;
-if (optimize_size)
-{
-/* Inlining of functions reducing size is a good idea regardless of them
-	 being declared inline.  */
-flag_inline_functions = 1;
-/* Basic optimization options.  */
-optimize_size = 1;
-if (optimize > 2)
-	optimize = 2;
-/* We want to crossjump as much as possible.  */
-set_param_value ("min-crossjump-insns", 1);
-}
 else
-set_param_value ("min-crossjump-insns", initial_min_crossjump_insns);
+maybe_set_param_value (PARAM_MIN_CROSSJUMP_INSNS,
+			   default_param_value (PARAM_MIN_CROSSJUMP_INSNS),
-/* Enable -Werror=coverage-mismatch by default */
+			   opts->x_param_values, opts_set->x_param_values);
-enable_warning_as_error("coverage-mismatch", 1, lang_mask);
-if (first_time_p)
-{
-/* Initialize whether `char' is signed.  */
-flag_signed_char = DEFAULT_SIGNED_CHAR;
-/* Set this to a special "uninitialized" value.  The actual default is
-	 set after target options have been processed.  */
-flag_short_enums = 2;
-/* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
-	 modify it.  */
-target_flags = targetm.default_target_flags;
-/* Some targets have ABI-specified unwind tables.  */
-flag_unwind_tables = targetm.unwind_tables_default;
-}
-#ifdef ENABLE_LTO
-/* Clear any options currently held for LTO.  */
-lto_clear_user_options ();
-#endif
-#ifdef OPTIMIZATION_OPTIONS
 /* Allow default optimizations to be specified on a per-machine basis.  */
-OPTIMIZATION_OPTIONS (optimize, optimize_size);
+maybe_default_options (opts, opts_set,
-#endif
+			 targetm.target_option.optimization_table,
+			 opts->x_optimize, opts->x_optimize_size,
-read_cmdline_options (argc, argv, lang_mask);
+			 opts->x_optimize_fast, lang_mask, handlers, loc, dc);
+}
-if (dump_base_name && ! IS_ABSOLUTE_PATH (dump_base_name))
-{
+/* After all options at LOC have been read into OPTS and OPTS_SET,
-/* First try to make DUMP_BASE_NAME relative to the DUMP_DIR_NAME
+finalize settings of those options and diagnose incompatible
-	 directory.  Then try to make DUMP_BASE_NAME relative to the
+combinations.  */
-	 AUX_BASE_NAME directory, typically the directory to contain
+void
-	 the object file.  */
+finish_options (struct gcc_options *opts, struct gcc_options *opts_set,
-if (dump_dir_name)
+		location_t loc)
-	dump_base_name = concat (dump_dir_name, dump_base_name, NULL);
+{
-else if (aux_base_name)
+enum unwind_info_type ui_except;
+if (opts->x_dump_base_name && ! IS_ABSOLUTE_PATH (opts->x_dump_base_name))
+{
+/* First try to make OPTS->X_DUMP_BASE_NAME relative to the
+	 OPTS->X_DUMP_DIR_NAME directory.  Then try to make
+	 OPTS->X_DUMP_BASE_NAME relative to the OPTS->X_AUX_BASE_NAME
+	 directory, typically the directory to contain the object
+	 file.  */
+if (opts->x_dump_dir_name)
+	opts->x_dump_base_name = concat (opts->x_dump_dir_name,
+					 opts->x_dump_base_name, NULL);
+else if (opts->x_aux_base_name
+	       && strcmp (opts->x_aux_base_name, HOST_BIT_BUCKET) != 0)
 	{
 	  const char *aux_base;
-	  base_of_path (aux_base_name, &aux_base);
+	  base_of_path (opts->x_aux_base_name, &aux_base);
-	  if (aux_base_name != aux_base)
+	  if (opts->x_aux_base_name != aux_base)
 	    {
-	      int dir_len = aux_base - aux_base_name;
+	      int dir_len = aux_base - opts->x_aux_base_name;
 	      char *new_dump_base_name =
-		XNEWVEC (char, strlen(dump_base_name) + dir_len + 1);
+		XNEWVEC (char, strlen (opts->x_dump_base_name) + dir_len + 1);
-	      /* Copy directory component from AUX_BASE_NAME.  */
+	      /* Copy directory component from OPTS->X_AUX_BASE_NAME.  */
-	      memcpy (new_dump_base_name, aux_base_name, dir_len);
+	      memcpy (new_dump_base_name, opts->x_aux_base_name, dir_len);
-	      /* Append existing DUMP_BASE_NAME.  */
+	      /* Append existing OPTS->X_DUMP_BASE_NAME.  */
-	      strcpy (new_dump_base_name + dir_len, dump_base_name);
+	      strcpy (new_dump_base_name + dir_len, opts->x_dump_base_name);
-	      dump_base_name = new_dump_base_name;
+	      opts->x_dump_base_name = new_dump_base_name;
 	    }
 	}
 }
 /* Handle related options for unit-at-a-time, toplevel-reorder, and
 section-anchors.  */
-if (!flag_unit_at_a_time)
+if (!opts->x_flag_unit_at_a_time)
 {
-if (flag_section_anchors == 1)
+if (opts->x_flag_section_anchors && opts_set->x_flag_section_anchors)
-	error ("Section anchors must be disabled when unit-at-a-time "
+	error_at (loc, "section anchors must be disabled when unit-at-a-time "
-	       "is disabled.");
+		  "is disabled");
-flag_section_anchors = 0;
+opts->x_flag_section_anchors = 0;
-if (flag_toplevel_reorder == 1)
+if (opts->x_flag_toplevel_reorder == 1)
-	error ("Toplevel reorder must be disabled when unit-at-a-time "
+	error_at (loc, "toplevel reorder must be disabled when unit-at-a-time "
-	       "is disabled.");
+		  "is disabled");
-flag_toplevel_reorder = 0;
+opts->x_flag_toplevel_reorder = 0;
 }
+/* -Wmissing-noreturn is alias for -Wsuggest-attribute=noreturn.  */
+if (opts->x_warn_missing_noreturn)
+opts->x_warn_suggest_attribute_noreturn = true;
 /* Unless the user has asked for section anchors, we disable toplevel
 reordering at -O0 to disable transformations that might be surprising
 to end users and to get -fno-toplevel-reorder tested.  */
-if (!optimize && flag_toplevel_reorder == 2 && flag_section_anchors != 1)
+if (!opts->x_optimize
-{
+&& opts->x_flag_toplevel_reorder == 2
-flag_toplevel_reorder = 0;
+&& !(opts->x_flag_section_anchors && opts_set->x_flag_section_anchors))
-flag_section_anchors = 0;
+{
-}
+opts->x_flag_toplevel_reorder = 0;
-if (!flag_toplevel_reorder)
+opts->x_flag_section_anchors = 0;
-{
+}
-if (flag_section_anchors == 1)
+if (!opts->x_flag_toplevel_reorder)
-	error ("section anchors must be disabled when toplevel reorder"
+{
-	       " is disabled");
+if (opts->x_flag_section_anchors && opts_set->x_flag_section_anchors)
-flag_section_anchors = 0;
+	error_at (loc, "section anchors must be disabled when toplevel reorder"
-}
+		  " is disabled");
+opts->x_flag_section_anchors = 0;
-if (first_time_p)
+}
-{
-if (flag_pie)
+if (!opts->x_flag_opts_finished)
-	flag_pic = flag_pie;
+{
-if (flag_pic && !flag_pie)
+if (opts->x_flag_pie)
-	flag_shlib = 1;
+	opts->x_flag_pic = opts->x_flag_pie;
-first_time_p = false;
+if (opts->x_flag_pic && !opts->x_flag_pie)
-}
+	opts->x_flag_shlib = 1;
+opts->x_flag_opts_finished = true;
-if (optimize == 0)
+}
+if (opts->x_optimize == 0)
 {
 /* Inlining does not work if not optimizing,
 	 so force it not to be done.  */
-warn_inline = 0;
+opts->x_warn_inline = 0;
-flag_no_inline = 1;
+opts->x_flag_no_inline = 1;
 }
 /* The optimization to partition hot and cold basic blocks into separate
 sections of the .o and executable files does not work (currently)
 with exception handling.  This is because there is no support for
-generating unwind info.  If flag_exceptions is turned on we need to
+generating unwind info.  If opts->x_flag_exceptions is turned on
-turn off the partitioning optimization.  */
+we need to turn off the partitioning optimization.  */
-if (flag_exceptions && flag_reorder_blocks_and_partition
+ui_except = targetm.except_unwind_info (opts);
-&& (USING_SJLJ_EXCEPTIONS
-#ifdef TARGET_UNWIND_INFO
+if (opts->x_flag_exceptions
-	  || 1
+&& opts->x_flag_reorder_blocks_and_partition
-#endif
+&& (ui_except == UI_SJLJ || ui_except == UI_TARGET))
-	 ))
+{
-{
+inform (loc,
-inform (input_location,
+	      "-freorder-blocks-and-partition does not work "
-	      "-freorder-blocks-and-partition does not work with exceptions on this architecture");
+	      "with exceptions on this architecture");
-flag_reorder_blocks_and_partition = 0;
+opts->x_flag_reorder_blocks_and_partition = 0;
-flag_reorder_blocks = 1;
+opts->x_flag_reorder_blocks = 1;
 }
 /* If user requested unwind info, then turn off the partitioning
 optimization.  */
-if (flag_unwind_tables && ! targetm.unwind_tables_default
+if (opts->x_flag_unwind_tables
-&& flag_reorder_blocks_and_partition
+&& !targetm.unwind_tables_default
-&& (USING_SJLJ_EXCEPTIONS
+&& opts->x_flag_reorder_blocks_and_partition
-#ifdef TARGET_UNWIND_INFO
+&& (ui_except == UI_SJLJ || ui_except == UI_TARGET))
-	  || 1
+{
-#endif
+inform (loc,
-	 ))
+	      "-freorder-blocks-and-partition does not support "
-{
+	      "unwind info on this architecture");
-inform (input_location,
+opts->x_flag_reorder_blocks_and_partition = 0;
-	      "-freorder-blocks-and-partition does not support unwind info on this architecture");
+opts->x_flag_reorder_blocks = 1;
-flag_reorder_blocks_and_partition = 0;
-flag_reorder_blocks = 1;
 }
 /* If the target requested unwind info, then turn off the partitioning
 optimization with a different message.  Likewise, if the target does not
 support named sections.  */
-if (flag_reorder_blocks_and_partition
+if (opts->x_flag_reorder_blocks_and_partition
 && (!targetm.have_named_sections
-	  || (flag_unwind_tables && targetm.unwind_tables_default
+	  || (opts->x_flag_unwind_tables
-	      && (USING_SJLJ_EXCEPTIONS
+	      && targetm.unwind_tables_default
-#ifdef TARGET_UNWIND_INFO
+	      && (ui_except == UI_SJLJ || ui_except == UI_TARGET))))
-		  || 1
+{
-#endif
+inform (loc,
-		 ))))
+	      "-freorder-blocks-and-partition does not work "
-{
+	      "on this architecture");
-inform (input_location,
+opts->x_flag_reorder_blocks_and_partition = 0;
-	      "-freorder-blocks-and-partition does not work on this architecture");
+opts->x_flag_reorder_blocks = 1;
-flag_reorder_blocks_and_partition = 0;
+}
-flag_reorder_blocks = 1;
-}
+if (opts->x_flag_reorder_blocks_and_partition
+&& !opts_set->x_flag_reorder_functions)
+opts->x_flag_reorder_functions = 1;
 /* Pipelining of outer loops is only possible when general pipelining
 capabilities are requested.  */
-if (!flag_sel_sched_pipelining)
+if (!opts->x_flag_sel_sched_pipelining)
-flag_sel_sched_pipelining_outer_loops = 0;
+opts->x_flag_sel_sched_pipelining_outer_loops = 0;
 if (!targetm.ira_cover_classes
-&& flag_ira_algorithm == IRA_ALGORITHM_CB)
+&& opts->x_flag_ira_algorithm == IRA_ALGORITHM_CB)
 {
-inform (input_location,
+inform (loc,
 	      "-fira-algorithm=CB does not work on this architecture");
-flag_ira_algorithm = IRA_ALGORITHM_PRIORITY;
+opts->x_flag_ira_algorithm = IRA_ALGORITHM_PRIORITY;
 }
-if (flag_conserve_stack)
+if (opts->x_flag_conserve_stack)
 {
-if (!PARAM_SET_P (PARAM_LARGE_STACK_FRAME))
+maybe_set_param_value (PARAM_LARGE_STACK_FRAME, 100,
-PARAM_VALUE (PARAM_LARGE_STACK_FRAME) = 100;
+			     opts->x_param_values, opts_set->x_param_values);
-if (!PARAM_SET_P (PARAM_STACK_FRAME_GROWTH))
+maybe_set_param_value (PARAM_STACK_FRAME_GROWTH, 40,
-PARAM_VALUE (PARAM_STACK_FRAME_GROWTH) = 40;
+			     opts->x_param_values, opts_set->x_param_values);
 }
-if (flag_wpa || flag_ltrans)
+if (opts->x_flag_wpa || opts->x_flag_ltrans)
 {
 /* These passes are not WHOPR compatible yet.  */
-flag_ipa_pta = 0;
+opts->x_flag_ipa_pta = 0;
-flag_ipa_struct_reorg = 0;
+opts->x_flag_ipa_struct_reorg = 0;
 }
-if (flag_lto || flag_whopr)
+if (opts->x_flag_lto)
 {
 #ifdef ENABLE_LTO
-flag_generate_lto = 1;
+opts->x_flag_generate_lto = 1;
 /* When generating IL, do not operate in whole-program mode.
 	 Otherwise, symbols will be privatized too early, causing link
 	 errors later.  */
-flag_whole_program = 0;
+opts->x_flag_whole_program = 0;
 #else
-error ("LTO support has not been enabled in this configuration");
+error_at (loc, "LTO support has not been enabled in this configuration");
 #endif
 }
+if ((opts->x_flag_lto_partition_balanced != 0) + (opts->x_flag_lto_partition_1to1 != 0)
-/* Reconcile -flto and -fwhopr.  Set additional flags as appropriate and
++ (opts->x_flag_lto_partition_none != 0) >= 1)
-check option consistency.  */
+{
-if (flag_lto && flag_whopr)
+if ((opts->x_flag_lto_partition_balanced != 0)
-error ("-flto and -fwhopr are mutually exclusive");
+	   + (opts->x_flag_lto_partition_1to1 != 0)
+	   + (opts->x_flag_lto_partition_none != 0) > 1)
+	error_at (loc, "only one -flto-partition value can be specified");
+}
+/* We initialize opts->x_flag_split_stack to -1 so that targets can set a
+default value if they choose based on other options.  */
+if (opts->x_flag_split_stack == -1)
+opts->x_flag_split_stack = 0;
+else if (opts->x_flag_split_stack)
+{
+if (!targetm.supports_split_stack (true, opts))
+	{
+	  error_at (loc, "%<-fsplit-stack%> is not supported by "
+		    "this compiler configuration");
+	  opts->x_flag_split_stack = 0;
+	}
+}
 }
 #define LEFT_COLUMN	27
 /* Output ITEM, of length ITEM_WIDTH, in the left column,
 /* Print help for a specific front-end, etc.  */
 static void
 print_filtered_help (unsigned int include_flags,
 		     unsigned int exclude_flags,
 		     unsigned int any_flags,
-		     unsigned int columns)
+		     unsigned int columns,
+		     struct gcc_options *opts,
+		     unsigned int lang_mask)
 {
 unsigned int i;
 const char *help;
-static char *printed = NULL;
 bool found = false;
 bool displayed = false;
 if (include_flags == CL_PARAMS)
 {
 	}
 putchar ('\n');
 return;
 }
-if (!printed)
+if (!opts->x_help_printed)
-printed = XCNEWVAR (char, cl_options_count);
+opts->x_help_printed = XCNEWVAR (char, cl_options_count);
+if (!opts->x_help_enum_printed)
+opts->x_help_enum_printed = XCNEWVAR (char, cl_enums_count);
 for (i = 0; i < cl_options_count; i++)
 {
-static char new_help[128];
+char new_help[128];
 const struct cl_option *option = cl_options + i;
 unsigned int len;
 const char *opt;
 const char *tab;
 /* Skip unwanted switches.  */
 if ((option->flags & exclude_flags) != 0)
 	continue;
+/* The driver currently prints its own help text.  */
+if ((option->flags & CL_DRIVER) != 0
+	  && (option->flags & (((1U << cl_lang_count) - 1)
+			       | CL_COMMON | CL_TARGET)) == 0)
+	continue;
 found = true;
 /* Skip switches that have already been printed.  */
-if (printed[i])
+if (opts->x_help_printed[i])
 	continue;
-printed[i] = true;
+opts->x_help_printed[i] = true;
 help = option->help;
 if (help == NULL)
 	{
 	  if (exclude_flags & CL_UNDOCUMENTED)
 /* With the -Q option enabled we change the descriptive text associated
 	 with an option to be an indication of its current setting.  */
 if (!quiet_flag)
 	{
+	  void *flag_var = option_flag_var (i, opts);
 	  if (len < (LEFT_COLUMN + 2))
 	    strcpy (new_help, "\t\t");
 	  else
 	    strcpy (new_help, "\t");
-	  if (option->flag_var != NULL)
+	  if (flag_var != NULL
+	      && option->var_type != CLVC_DEFER)
 	    {
 	      if (option->flags & CL_JOINED)
 		{
 		  if (option->var_type == CLVC_STRING)
 		    {
-		      if (* (const char **) option->flag_var != NULL)
+		      if (* (const char **) flag_var != NULL)
 			snprintf (new_help + strlen (new_help),
 				  sizeof (new_help) - strlen (new_help),
-				  * (const char **) option->flag_var);
+				  * (const char **) flag_var);
+		    }
+		  else if (option->var_type == CLVC_ENUM)
+		    {
+		      const struct cl_enum *e = &cl_enums[option->var_enum];
+		      int value;
+		      const char *arg = NULL;
+		      value = e->get (flag_var);
+		      enum_value_to_arg (e->values, &arg, value, lang_mask);
+		      if (arg == NULL)
+			arg = _("[default]");
+		      snprintf (new_help + strlen (new_help),
+				sizeof (new_help) - strlen (new_help),
+				arg);
 		    }
 		  else
 		    sprintf (new_help + strlen (new_help),
-			     "%#x", * (int *) option->flag_var);
+			     "%#x", * (int *) flag_var);
 		}
 	      else
-		strcat (new_help, option_enabled (i)
+		strcat (new_help, option_enabled (i, opts)
 			? _("[enabled]") : _("[disabled]"));
 	    }
 	  help = new_help;
 	}
 wrap_help (help, opt, len, columns);
 displayed = true;
+if (option->var_type == CLVC_ENUM
+	  && opts->x_help_enum_printed[option->var_enum] != 2)
+	opts->x_help_enum_printed[option->var_enum] = 1;
 }
 if (! found)
 {
 unsigned int langs = include_flags & CL_LANG_ALL;
 }
 else if (! displayed)
 printf (_(" All options with the desired characteristics have already been displayed\n"));
 putchar ('\n');
+/* Print details of enumerated option arguments, if those
+enumerations have help text headings provided.  If no help text
+is provided, presume that the possible values are listed in the
+help text for the relevant options.  */
+for (i = 0; i < cl_enums_count; i++)
+{
+unsigned int j, pos;
+if (opts->x_help_enum_printed[i] != 1)
+	continue;
+if (cl_enums[i].help == NULL)
+	continue;
+printf ("  %s\n    ", _(cl_enums[i].help));
+pos = 4;
+for (j = 0; cl_enums[i].values[j].arg != NULL; j++)
+	{
+	  unsigned int len = strlen (cl_enums[i].values[j].arg);
+	  if (pos > 4 && pos + 1 + len <= columns)
+	    {
+	      printf (" %s", cl_enums[i].values[j].arg);
+	      pos += 1 + len;
+	    }
+	  else
+	    {
+	      if (pos > 4)
+		{
+		  printf ("\n    ");
+		  pos = 4;
+		}
+	      printf ("%s", cl_enums[i].values[j].arg);
+	      pos += len;
+	    }
+	}
+printf ("\n\n");
+opts->x_help_enum_printed[i] = 2;
+}
 }
 /* Display help for a specified type of option.
 The options must have ALL of the INCLUDE_FLAGS set
 ANY of the flags in the ANY_FLAGS set
-and NONE of the EXCLUDE_FLAGS set.  */
+and NONE of the EXCLUDE_FLAGS set.  The current option state is in
+OPTS; LANG_MASK is used for interpreting enumerated option state.  */
 static void
 print_specific_help (unsigned int include_flags,
 		     unsigned int exclude_flags,
-		     unsigned int any_flags)
+		     unsigned int any_flags,
+		     struct gcc_options *opts,
+		     unsigned int lang_mask)
 {
 unsigned int all_langs_mask = (1U << cl_lang_count) - 1;
 const char * description = NULL;
 const char * descrip_extra = "";
 size_t i;
 unsigned int flag;
-static unsigned int columns = 0;
 /* Sanity check: Make sure that we do not have more
 languages than we have bits available to enumerate them.  */
 gcc_assert ((1U << cl_lang_count) < CL_MIN_OPTION_CLASS);
 /* If we have not done so already, obtain
 the desired maximum width of the output.  */
-if (columns == 0)
+if (opts->x_help_columns == 0)
 {
 const char *p;
-GET_ENVIRONMENT (p, "COLUMNS");
+p = getenv ("COLUMNS");
 if (p != NULL)
 	{
 	  int value = atoi (p);
 	  if (value > 0)
-	    columns = value;
+	    opts->x_help_columns = value;
 	}
-if (columns == 0)
+if (opts->x_help_columns == 0)
 	/* Use a reasonable default.  */
-	columns = 80;
+	opts->x_help_columns = 80;
 }
 /* Decide upon the title for the options that we are going to display.  */
 for (i = 0, flag = 1; flag <= CL_MAX_OPTION_CLASS; flag <<= 1, i ++)
 {
 switch (flag & include_flags)
 	{
 	case 0:
+	case CL_DRIVER:
 	  break;
 	case CL_TARGET:
 	  description = _("The following options are target specific");
 	  break;
 	    description = _("The following options are language-independent");
 	}
 }
 printf ("%s%s:\n", description, descrip_extra);
-print_filtered_help (include_flags, exclude_flags, any_flags, columns);
+print_filtered_help (include_flags, exclude_flags, any_flags,
+		       opts->x_help_columns, opts, lang_mask);
 }
 /* Handle target- and language-independent options.  Return zero to
 generate an "unknown option" message.  Only options that need
 extra handling need to be listed here; if you simply want
-VALUE assigned to a variable, it happens automatically.  */
+DECODED->value assigned to a variable, it happens automatically.  */
-static int
+bool
-common_handle_option (size_t scode, const char *arg, int value,
+common_handle_option (struct gcc_options *opts,
-		      unsigned int lang_mask, int kind ATTRIBUTE_UNUSED)
+		      struct gcc_options *opts_set,
-{
+		      const struct cl_decoded_option *decoded,
-static bool verbose = false;
+		      unsigned int lang_mask, int kind ATTRIBUTE_UNUSED,
+		      location_t loc,
+		      const struct cl_option_handlers *handlers,
+		      diagnostic_context *dc)
+{
+size_t scode = decoded->opt_index;
+const char *arg = decoded->arg;
+int value = decoded->value;
 enum opt_code code = (enum opt_code) scode;
+gcc_assert (decoded->canonical_option_num_elements <= 2);
 switch (code)
 {
 case OPT__param:
-handle_param (arg);
+handle_param (opts, opts_set, loc, arg);
 break;
-case OPT_v:
-verbose = true;
-break;
-case OPT_fhelp:
 case OPT__help:
 {
 	unsigned int all_langs_mask = (1U << cl_lang_count) - 1;
 	unsigned int undoc_mask;
 	unsigned int i;
-	undoc_mask = (verbose | extra_warnings) ? 0 : CL_UNDOCUMENTED;
+	undoc_mask = ((opts->x_verbose_flag | opts->x_extra_warnings)
+		      ? 0
+		      : CL_UNDOCUMENTED);
 	/* First display any single language specific options.  */
 	for (i = 0; i < cl_lang_count; i++)
 	  print_specific_help
-	    (1U << i, (all_langs_mask & (~ (1U << i))) | undoc_mask, 0);
+	    (1U << i, (all_langs_mask & (~ (1U << i))) | undoc_mask, 0, opts,
+	     lang_mask);
 	/* Next display any multi language specific options.  */
-	print_specific_help (0, undoc_mask, all_langs_mask);
+	print_specific_help (0, undoc_mask, all_langs_mask, opts, lang_mask);
 	/* Then display any remaining, non-language options.  */
 	for (i = CL_MIN_OPTION_CLASS; i <= CL_MAX_OPTION_CLASS; i <<= 1)
-	  print_specific_help (i, undoc_mask, 0);
+	  if (i != CL_DRIVER)
-	exit_after_options = true;
+	    print_specific_help (i, undoc_mask, 0, opts, lang_mask);
+	opts->x_exit_after_options = true;
 	break;
 }
-case OPT_ftarget_help:
 case OPT__target_help:
-print_specific_help (CL_TARGET, CL_UNDOCUMENTED, 0);
+print_specific_help (CL_TARGET, CL_UNDOCUMENTED, 0, opts, lang_mask);
-exit_after_options = true;
+opts->x_exit_after_options = true;
 /* Allow the target a chance to give the user some additional information.  */
-if (targetm.target_help)
+if (targetm.help)
-	targetm.target_help ();
+	targetm.help ();
 break;
-case OPT_fhelp_:
 case OPT__help_:
 {
 	const char * a = arg;
 	unsigned int include_flags = 0;
 	/* Note - by default we include undocumented options when listing
 	   arg = [^]{word}[,{arg}]
 	   word = {optimizers|target|warnings|undocumented|
 		   params|common|<language>}  */
 	while (* a != 0)
 	  {
-	    static struct
+	    static const struct
 	    {
 	      const char * string;
 	      unsigned int flag;
 	    }
 	    specifics[] =
 		       specified "--help=c", but otherwise we have to issue
 		       a warning.  */
 		    if (strncasecmp (a, "c", len) == 0)
 		      * pflags |= lang_flag;
 		    else
-		      fnotice (stderr,
+		      warning_at (loc, 0,
-			       "warning: --help argument %.*s is ambiguous, please be more specific\n",
+				  "--help argument %q.*s is ambiguous, "
-			       len, a);
+				  "please be more specific",
+				  len, a);
 		  }
 	      }
 	    else if (lang_flag != 0)
 	      * pflags |= lang_flag;
 	    else
-	      fnotice (stderr,
+	      warning_at (loc, 0,
-		       "warning: unrecognized argument to --help= option: %.*s\n",
+			  "unrecognized argument to --help= option: %q.*s",
-		       len, a);
+			  len, a);
 	    if (comma == NULL)
 	      break;
 	    a = comma + 1;
 	  }
 	if (include_flags)
-	  print_specific_help (include_flags, exclude_flags, 0);
+	  print_specific_help (include_flags, exclude_flags, 0, opts,
-	exit_after_options = true;
+			       lang_mask);
+	opts->x_exit_after_options = true;
 	break;
 }
-case OPT_fversion:
 case OPT__version:
-exit_after_options = true;
+opts->x_exit_after_options = true;
-break;
-case OPT_G:
-g_switch_value = value;
-g_switch_set = true;
 break;
 case OPT_O:
 case OPT_Os:
+case OPT_Ofast:
 /* Currently handled in a prescan.  */
 break;
 case OPT_Werror_:
-enable_warning_as_error (arg, value, lang_mask);
+enable_warning_as_error (arg, value, lang_mask, handlers,
+			       opts, opts_set, loc, dc);
 break;
 case OPT_Wlarger_than_:
-/* This form corresponds to -Wlarger-than-.
+opts->x_larger_than_size = value;
-	 Kept for backward compatibility.
+opts->x_warn_larger_than = value != -1;
-	 Don't use it as the first argument of warning().  */
+break;
-case OPT_Wlarger_than_eq:
+case OPT_Wfatal_errors:
-larger_than_size = value;
+dc->fatal_errors = value;
-warn_larger_than = value != -1;
 break;
 case OPT_Wframe_larger_than_:
-frame_larger_than_size = value;
+opts->x_frame_larger_than_size = value;
-warn_frame_larger_than = value != -1;
+opts->x_warn_frame_larger_than = value != -1;
 break;
 case OPT_Wstrict_aliasing:
-set_Wstrict_aliasing (value);
+set_Wstrict_aliasing (opts, value);
-break;
-case OPT_Wstrict_aliasing_:
-warn_strict_aliasing = value;
 break;
 case OPT_Wstrict_overflow:
-warn_strict_overflow = (value
+opts->x_warn_strict_overflow = (value
-			      ? (int) WARN_STRICT_OVERFLOW_CONDITIONAL
+				      ? (int) WARN_STRICT_OVERFLOW_CONDITIONAL
-			      : 0);
+				      : 0);
 break;
-case OPT_Wstrict_overflow_:
+case OPT_Wsystem_headers:
-warn_strict_overflow = value;
+dc->dc_warn_system_headers = value;
-break;
-case OPT_Wunused:
-warn_unused = value;
 break;
 case OPT_aux_info:
-case OPT_aux_info_:
+opts->x_flag_gen_aux_info = 1;
-aux_info_file_name = arg;
-flag_gen_aux_info = 1;
-break;
-case OPT_auxbase:
-aux_base_name = arg;
 break;
 case OPT_auxbase_strip:
 {
 	char *tmp = xstrdup (arg);
 	strip_off_ending (tmp, strlen (tmp));
 	if (tmp[0])
-	  aux_base_name = tmp;
+	  opts->x_aux_base_name = tmp;
 }
 break;
 case OPT_d:
-decode_d_option (arg);
+decode_d_option (arg, opts, loc, dc);
-break;
-case OPT_dumpbase:
-dump_base_name = arg;
-break;
-case OPT_dumpdir:
-dump_dir_name = arg;
-break;
-case OPT_falign_functions_:
-align_functions = value;
-break;
-case OPT_falign_jumps_:
-align_jumps = value;
-break;
-case OPT_falign_labels_:
-align_labels = value;
-break;
-case OPT_falign_loops_:
-align_loops = value;
-break;
-case OPT_fbranch_probabilities:
-flag_branch_probabilities_set = true;
 break;
 case OPT_fcall_used_:
-fix_register (arg, 0, 1);
-break;
 case OPT_fcall_saved_:
-fix_register (arg, 0, 0);
+/* Deferred.  */
 break;
 case OPT_fdbg_cnt_:
-dbg_cnt_process_opt (arg);
-break;
 case OPT_fdbg_cnt_list:
-dbg_cnt_list_all_counters ();
+/* Deferred.  */
 break;
 case OPT_fdebug_prefix_map_:
-add_debug_prefix_map (arg);
+/* Deferred.  */
 break;
 case OPT_fdiagnostics_show_location_:
-if (!strcmp (arg, "once"))
+diagnostic_prefixing_rule (dc) = (diagnostic_prefixing_rule_t) value;
-	diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE;
-else if (!strcmp (arg, "every-line"))
-	diagnostic_prefixing_rule (global_dc)
-	  = DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE;
-else
-	return 0;
 break;
 case OPT_fdiagnostics_show_option:
-global_dc->show_option_requested = value;
+dc->show_option_requested = value;
 break;
 case OPT_fdump_:
-if (!dump_switch_p (arg))
+/* Deferred.  */
-	return 0;
-break;
-case OPT_fexcess_precision_:
-if (!strcmp (arg, "fast"))
-	flag_excess_precision_cmdline = EXCESS_PRECISION_FAST;
-else if (!strcmp (arg, "standard"))
-	flag_excess_precision_cmdline = EXCESS_PRECISION_STANDARD;
-else
-	error ("unknown excess precision style \"%s\"", arg);
 break;
 case OPT_ffast_math:
-set_fast_math_flags (value);
+set_fast_math_flags (opts, value);
 break;
 case OPT_funsafe_math_optimizations:
-set_unsafe_math_optimizations_flags (value);
+set_unsafe_math_optimizations_flags (opts, value);
 break;
 case OPT_ffixed_:
-fix_register (arg, 1, 1);
+/* Deferred.  */
 break;
 case OPT_finline_limit_:
-case OPT_finline_limit_eq:
+set_param_value ("max-inline-insns-single", value / 2,
-set_param_value ("max-inline-insns-single", value / 2);
+		       opts->x_param_values, opts_set->x_param_values);
-set_param_value ("max-inline-insns-auto", value / 2);
+set_param_value ("max-inline-insns-auto", value / 2,
+		       opts->x_param_values, opts_set->x_param_values);
 break;
 case OPT_finstrument_functions_exclude_function_list_:
 add_comma_separated_to_vector
-	(&flag_instrument_functions_exclude_functions, arg);
+	(&opts->x_flag_instrument_functions_exclude_functions, arg);
 break;
 case OPT_finstrument_functions_exclude_file_list_:
 add_comma_separated_to_vector
-	(&flag_instrument_functions_exclude_files, arg);
+	(&opts->x_flag_instrument_functions_exclude_files, arg);
 break;
 case OPT_fmessage_length_:
-pp_set_line_maximum_length (global_dc->printer, value);
+pp_set_line_maximum_length (dc->printer, value);
 break;
 case OPT_fpack_struct_:
 if (value <= 0 || (value & (value - 1)) || value > 16)
-	error ("structure alignment must be a small power of two, not %d", value);
+	error_at (loc,
+		  "structure alignment must be a small power of two, not %d",
+		  value);
 else
-	{
+	opts->x_initial_max_fld_align = value;
-	  initial_max_fld_align = value;
-	  maximum_field_alignment = value * BITS_PER_UNIT;
-	}
-break;
-case OPT_fpeel_loops:
-flag_peel_loops_set = true;
 break;
 case OPT_fplugin_:
-#ifdef ENABLE_PLUGIN
-add_new_plugin (arg);
-#else
-error ("Plugin support is disabled.  Configure with --enable-plugin.");
-#endif
-break;
 case OPT_fplugin_arg_:
-#ifdef ENABLE_PLUGIN
+/* Deferred.  */
-parse_plugin_arg_opt (arg);
-#else
-error ("Plugin support is disabled.  Configure with --enable-plugin.");
-#endif
-break;
-case OPT_fprofile_arcs:
-profile_arc_flag_set = true;
-break;
-case OPT_finline_functions:
-flag_inline_functions_set = true;
-break;
-case OPT_fprofile_dir_:
-profile_data_prefix = xstrdup (arg);
 break;
 case OPT_fprofile_use_:
-profile_data_prefix = xstrdup (arg);
+opts->x_profile_data_prefix = xstrdup (arg);
-flag_profile_use = true;
+opts->x_flag_profile_use = true;
 value = true;
 /* No break here - do -fprofile-use processing. */
 case OPT_fprofile_use:
-if (!flag_branch_probabilities_set)
+if (!opts_set->x_flag_branch_probabilities)
-flag_branch_probabilities = value;
+	opts->x_flag_branch_probabilities = value;
-if (!flag_profile_values_set)
+if (!opts_set->x_flag_profile_values)
-flag_profile_values = value;
+	opts->x_flag_profile_values = value;
-if (!flag_unroll_loops_set)
+if (!opts_set->x_flag_unroll_loops)
-flag_unroll_loops = value;
+	opts->x_flag_unroll_loops = value;
-if (!flag_peel_loops_set)
+if (!opts_set->x_flag_peel_loops)
-flag_peel_loops = value;
+	opts->x_flag_peel_loops = value;
-if (!flag_tracer_set)
+if (!opts_set->x_flag_tracer)
-flag_tracer = value;
+	opts->x_flag_tracer = value;
-if (!flag_value_profile_transformations_set)
+if (!opts_set->x_flag_value_profile_transformations)
-flag_value_profile_transformations = value;
+	opts->x_flag_value_profile_transformations = value;
-if (!flag_inline_functions_set)
+if (!opts_set->x_flag_inline_functions)
-flag_inline_functions = value;
+	opts->x_flag_inline_functions = value;
-if (!flag_ipa_cp_set)
+if (!opts_set->x_flag_ipa_cp)
-flag_ipa_cp = value;
+	opts->x_flag_ipa_cp = value;
-if (!flag_ipa_cp_clone_set
+if (!opts_set->x_flag_ipa_cp_clone
-	  && value && flag_ipa_cp)
+	  && value && opts->x_flag_ipa_cp)
-	flag_ipa_cp_clone = value;
+	opts->x_flag_ipa_cp_clone = value;
-if (!flag_predictive_commoning_set)
+if (!opts_set->x_flag_predictive_commoning)
-	flag_predictive_commoning = value;
+	opts->x_flag_predictive_commoning = value;
-if (!flag_unswitch_loops_set)
+if (!opts_set->x_flag_unswitch_loops)
-	flag_unswitch_loops = value;
+	opts->x_flag_unswitch_loops = value;
-if (!flag_gcse_after_reload_set)
+if (!opts_set->x_flag_gcse_after_reload)
-	flag_gcse_after_reload = value;
+	opts->x_flag_gcse_after_reload = value;
 break;
 case OPT_fprofile_generate_:
-profile_data_prefix = xstrdup (arg);
+opts->x_profile_data_prefix = xstrdup (arg);
 value = true;
 /* No break here - do -fprofile-generate processing. */
 case OPT_fprofile_generate:
-if (!profile_arc_flag_set)
+if (!opts_set->x_profile_arc_flag)
-profile_arc_flag = value;
+	opts->x_profile_arc_flag = value;
-if (!flag_profile_values_set)
+if (!opts_set->x_flag_profile_values)
-flag_profile_values = value;
+	opts->x_flag_profile_values = value;
-if (!flag_value_profile_transformations_set)
+if (!opts_set->x_flag_value_profile_transformations)
-flag_value_profile_transformations = value;
+	opts->x_flag_value_profile_transformations = value;
-if (!flag_inline_functions_set)
+if (!opts_set->x_flag_inline_functions)
-flag_inline_functions = value;
+	opts->x_flag_inline_functions = value;
-break;
+/* FIXME: Instrumentation we insert makes ipa-reference bitmaps
+	 quadratic.  Disable the pass until better memory representation
-case OPT_fprofile_values:
+	 is done.  */
-flag_profile_values_set = true;
+if (!opts_set->x_flag_ipa_reference && in_lto_p)
-break;
+opts->x_flag_ipa_reference = false;
+break;
-case OPT_fvisibility_:
-{
+case OPT_fshow_column:
-if (!strcmp(arg, "default"))
+dc->show_column = value;
-default_visibility = VISIBILITY_DEFAULT;
-else if (!strcmp(arg, "internal"))
-default_visibility = VISIBILITY_INTERNAL;
-else if (!strcmp(arg, "hidden"))
-default_visibility = VISIBILITY_HIDDEN;
-else if (!strcmp(arg, "protected"))
-default_visibility = VISIBILITY_PROTECTED;
-else
-error ("unrecognized visibility value \"%s\"", arg);
-}
-break;
-case OPT_fvpt:
-flag_value_profile_transformations_set = true;
 break;
 case OPT_frandom_seed:
 /* The real switch is -fno-random-seed.  */
 if (value)
-	return 0;
+	return false;
-set_random_seed (NULL);
+/* Deferred.  */
 break;
 case OPT_frandom_seed_:
-set_random_seed (arg);
+/* Deferred.  */
-break;
-case OPT_fselective_scheduling:
-case OPT_fselective_scheduling2:
-sel_sched_switch_set = true;
 break;
 case OPT_fsched_verbose_:
 #ifdef INSN_SCHEDULING
-fix_sched_param ("verbose", arg);
+/* Handled with Var in common.opt.  */
 break;
 #else
-return 0;
+return false;
 #endif
 case OPT_fsched_stalled_insns_:
-flag_sched_stalled_insns = value;
+opts->x_flag_sched_stalled_insns = value;
-if (flag_sched_stalled_insns == 0)
+if (opts->x_flag_sched_stalled_insns == 0)
-	flag_sched_stalled_insns = -1;
+	opts->x_flag_sched_stalled_insns = -1;
 break;
 case OPT_fsched_stalled_insns_dep_:
-flag_sched_stalled_insns_dep = value;
+opts->x_flag_sched_stalled_insns_dep = value;
 break;
 case OPT_fstack_check_:
 if (!strcmp (arg, "no"))
-	flag_stack_check = NO_STACK_CHECK;
+	opts->x_flag_stack_check = NO_STACK_CHECK;
 else if (!strcmp (arg, "generic"))
 	/* This is the old stack checking method.  */
-	flag_stack_check = STACK_CHECK_BUILTIN
+	opts->x_flag_stack_check = STACK_CHECK_BUILTIN
 			   ? FULL_BUILTIN_STACK_CHECK
 			   : GENERIC_STACK_CHECK;
 else if (!strcmp (arg, "specific"))
 	/* This is the new stack checking method.  */
-	flag_stack_check = STACK_CHECK_BUILTIN
+	opts->x_flag_stack_check = STACK_CHECK_BUILTIN
 			   ? FULL_BUILTIN_STACK_CHECK
 			   : STACK_CHECK_STATIC_BUILTIN
 			     ? STATIC_BUILTIN_STACK_CHECK
 			     : GENERIC_STACK_CHECK;
 else
-	warning (0, "unknown stack check parameter \"%s\"", arg);
+	warning_at (loc, 0, "unknown stack check parameter \"%s\"", arg);
-break;
-case OPT_fstack_check:
-/* This is the same as the "specific" mode above.  */
-if (value)
-	flag_stack_check = STACK_CHECK_BUILTIN
-			   ? FULL_BUILTIN_STACK_CHECK
-			   : STACK_CHECK_STATIC_BUILTIN
-			     ? STATIC_BUILTIN_STACK_CHECK
-			     : GENERIC_STACK_CHECK;
-else
-	flag_stack_check = NO_STACK_CHECK;
 break;
 case OPT_fstack_limit:
 /* The real switch is -fno-stack-limit.  */
 if (value)
-	return 0;
+	return false;
-stack_limit_rtx = NULL_RTX;
+/* Deferred.  */
 break;
 case OPT_fstack_limit_register_:
-{
-	int reg = decode_reg_name (arg);
-	if (reg < 0)
-	  error ("unrecognized register name \"%s\"", arg);
-	else
-	  stack_limit_rtx = gen_rtx_REG (Pmode, reg);
-}
-break;
 case OPT_fstack_limit_symbol_:
-stack_limit_rtx = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (arg));
+/* Deferred.  */
 break;
 case OPT_ftree_vectorizer_verbose_:
-vect_set_verbosity_level (arg);
+vect_set_verbosity_level (opts, value);
-break;
-case OPT_ftls_model_:
-if (!strcmp (arg, "global-dynamic"))
-	flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC;
-else if (!strcmp (arg, "local-dynamic"))
-	flag_tls_default = TLS_MODEL_LOCAL_DYNAMIC;
-else if (!strcmp (arg, "initial-exec"))
-	flag_tls_default = TLS_MODEL_INITIAL_EXEC;
-else if (!strcmp (arg, "local-exec"))
-	flag_tls_default = TLS_MODEL_LOCAL_EXEC;
-else
-	warning (0, "unknown tls-model \"%s\"", arg);
-break;
-case OPT_fira_algorithm_:
-if (!strcmp (arg, "CB"))
-	flag_ira_algorithm = IRA_ALGORITHM_CB;
-else if (!strcmp (arg, "priority"))
-	flag_ira_algorithm = IRA_ALGORITHM_PRIORITY;
-else
-	warning (0, "unknown ira algorithm \"%s\"", arg);
-break;
-case OPT_fira_region_:
-if (!strcmp (arg, "one"))
-	flag_ira_region = IRA_REGION_ONE;
-else if (!strcmp (arg, "all"))
-	flag_ira_region = IRA_REGION_ALL;
-else if (!strcmp (arg, "mixed"))
-	flag_ira_region = IRA_REGION_MIXED;
-else
-	warning (0, "unknown ira region \"%s\"", arg);
-break;
-case OPT_fira_verbose_:
-flag_ira_verbose = value;
-break;
-case OPT_ftracer:
-flag_tracer_set = true;
-break;
-case OPT_fipa_cp:
-flag_ipa_cp_set = true;
-break;
-case OPT_fipa_cp_clone:
-flag_ipa_cp_clone_set = true;
-break;
-case OPT_fpredictive_commoning:
-flag_predictive_commoning_set = true;
-break;
-case OPT_funswitch_loops:
-flag_unswitch_loops_set = true;
-break;
-case OPT_fgcse_after_reload:
-flag_gcse_after_reload_set = true;
-break;
-case OPT_funroll_loops:
-flag_unroll_loops_set = true;
 break;
 case OPT_g:
-set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg);
+set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg, opts, opts_set,
+		       loc);
 break;
 case OPT_gcoff:
-set_debug_level (SDB_DEBUG, false, arg);
+set_debug_level (SDB_DEBUG, false, arg, opts, opts_set, loc);
 break;
 case OPT_gdwarf_:
 if (value < 2 || value > 4)
-	error ("dwarf version %d is not supported", value);
+	error_at (loc, "dwarf version %d is not supported", value);
 else
 	dwarf_version = value;
-set_debug_level (DWARF2_DEBUG, false, "");
+set_debug_level (DWARF2_DEBUG, false, "", opts, opts_set, loc);
 break;
 case OPT_ggdb:
-set_debug_level (NO_DEBUG, 2, arg);
+set_debug_level (NO_DEBUG, 2, arg, opts, opts_set, loc);
 break;
 case OPT_gstabs:
 case OPT_gstabs_:
-set_debug_level (DBX_DEBUG, code == OPT_gstabs_, arg);
+set_debug_level (DBX_DEBUG, code == OPT_gstabs_, arg, opts, opts_set,
+		       loc);
 break;
 case OPT_gvms:
-set_debug_level (VMS_DEBUG, false, arg);
+set_debug_level (VMS_DEBUG, false, arg, opts, opts_set, loc);
 break;
 case OPT_gxcoff:
 case OPT_gxcoff_:
-set_debug_level (XCOFF_DEBUG, code == OPT_gxcoff_, arg);
+set_debug_level (XCOFF_DEBUG, code == OPT_gxcoff_, arg, opts, opts_set,
-break;
+		       loc);
-case OPT_o:
-asm_file_name = arg;
 break;
 case OPT_pedantic_errors:
-flag_pedantic_errors = pedantic = 1;
+opts->x_pedantic = 1;
-break;
+dc->pedantic_errors = 1;
+break;
-case OPT_fwhopr:
-flag_whopr = value;
+case OPT_flto:
-break;
+opts->x_flag_lto = value ? "" : NULL;
+break;
-case OPT_fsee:
-case OPT_fcse_skip_blocks:
+case OPT_w:
-case OPT_floop_optimize:
+dc->dc_inhibit_warnings = true;
-case OPT_frerun_loop_opt:
+break;
-case OPT_fsched2_use_traces:
-case OPT_fstrength_reduce:
+case OPT_fmax_errors_:
-case OPT_ftree_store_copy_prop:
+dc->max_errors = value;
-case OPT_fforce_addr:
-case OPT_ftree_salias:
-case OPT_ftree_store_ccp:
-case OPT_Wunreachable_code:
-case OPT_fargument_alias:
-case OPT_fargument_noalias:
-case OPT_fargument_noalias_anything:
-case OPT_fargument_noalias_global:
-/* These are no-ops, preserved for backward compatibility.  */
 break;
 case OPT_fuse_linker_plugin:
 /* No-op. Used by the driver and passed to us because it starts with f.*/
 break;
 default:
 /* If the flag was handled in a standard way, assume the lack of
 	 processing here is intentional.  */
-gcc_assert (cl_options[scode].flag_var);
+gcc_assert (option_flag_var (scode, opts));
 break;
 }
-return 1;
+return true;
 }
 /* Handle --param NAME=VALUE.  */
 static void
-handle_param (const char *carg)
+handle_param (struct gcc_options *opts, struct gcc_options *opts_set,
+	      location_t loc, const char *carg)
 {
 char *equal, *arg;
 int value;
 arg = xstrdup (carg);
 equal = strchr (arg, '=');
 if (!equal)
-error ("%s: --param arguments should be of the form NAME=VALUE", arg);
+error_at (loc, "%s: --param arguments should be of the form NAME=VALUE",
+	      arg);
 else
 {
 value = integral_argument (equal + 1);
 if (value == -1)
-	error ("invalid --param value %qs", equal + 1);
+	error_at (loc, "invalid --param value %qs", equal + 1);
 else
 	{
 	  *equal = '\0';
-	  set_param_value (arg, value);
+	  set_param_value (arg, value,
+			   opts->x_param_values, opts_set->x_param_values);
 	}
 }
 free (arg);
 }
-/* Used to set the level of strict aliasing warnings,
+/* Used to set the level of strict aliasing warnings in OPTS,
 when no level is specified (i.e., when -Wstrict-aliasing, and not
 -Wstrict-aliasing=level was given).
 ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified,
 and 0 otherwise.  After calling this function, wstrict_aliasing will be
 set to the default value of -Wstrict_aliasing=level, currently 3.  */
 void
-set_Wstrict_aliasing (int onoff)
+set_Wstrict_aliasing (struct gcc_options *opts, int onoff)
 {
 gcc_assert (onoff == 0 || onoff == 1);
 if (onoff != 0)
-warn_strict_aliasing = 3;
+opts->x_warn_strict_aliasing = 3;
 else
-warn_strict_aliasing = 0;
+opts->x_warn_strict_aliasing = 0;
 }
 /* The following routines are useful in setting all the flags that
 -ffast-math and -fno-fast-math imply.  */
-void
+static void
-set_fast_math_flags (int set)
+set_fast_math_flags (struct gcc_options *opts, int set)
 {
-flag_unsafe_math_optimizations = set;
+if (!opts->frontend_set_flag_unsafe_math_optimizations)
-set_unsafe_math_optimizations_flags (set);
+{
-flag_finite_math_only = set;
+opts->x_flag_unsafe_math_optimizations = set;
-flag_errno_math = !set;
+set_unsafe_math_optimizations_flags (opts, set);
+}
+if (!opts->frontend_set_flag_finite_math_only)
+opts->x_flag_finite_math_only = set;
+if (!opts->frontend_set_flag_errno_math)
+opts->x_flag_errno_math = !set;
 if (set)
 {
-flag_signaling_nans = 0;
+if (!opts->frontend_set_flag_signaling_nans)
-flag_rounding_math = 0;
+	opts->x_flag_signaling_nans = 0;
-flag_cx_limited_range = 1;
+if (!opts->frontend_set_flag_rounding_math)
+	opts->x_flag_rounding_math = 0;
+if (!opts->frontend_set_flag_cx_limited_range)
+	opts->x_flag_cx_limited_range = 1;
 }
 }
 /* When -funsafe-math-optimizations is set the following
 flags are set as well.  */
-void
+static void
-set_unsafe_math_optimizations_flags (int set)
+set_unsafe_math_optimizations_flags (struct gcc_options *opts, int set)
 {
-flag_trapping_math = !set;
+if (!opts->frontend_set_flag_trapping_math)
-flag_signed_zeros = !set;
+opts->x_flag_trapping_math = !set;
-flag_associative_math = set;
+if (!opts->frontend_set_flag_signed_zeros)
-flag_reciprocal_math = set;
+opts->x_flag_signed_zeros = !set;
-}
+if (!opts->frontend_set_flag_associative_math)
+opts->x_flag_associative_math = set;
-/* Return true iff flags are set as if -ffast-math.  */
+if (!opts->frontend_set_flag_reciprocal_math)
+opts->x_flag_reciprocal_math = set;
+}
+/* Return true iff flags in OPTS are set as if -ffast-math.  */
 bool
-fast_math_flags_set_p (void)
+fast_math_flags_set_p (const struct gcc_options *opts)
 {
-return (!flag_trapping_math
+return (!opts->x_flag_trapping_math
-	  && flag_unsafe_math_optimizations
+	  && opts->x_flag_unsafe_math_optimizations
-	  && flag_finite_math_only
+	  && opts->x_flag_finite_math_only
-	  && !flag_signed_zeros
+	  && !opts->x_flag_signed_zeros
-	  && !flag_errno_math);
+	  && !opts->x_flag_errno_math);
 }
 /* Return true iff flags are set as if -ffast-math but using the flags stored
 in the struct cl_optimization structure.  */
 bool
 fast_math_flags_struct_set_p (struct cl_optimization *opt)
 {
-return (!opt->flag_trapping_math
+return (!opt->x_flag_trapping_math
-	  && opt->flag_unsafe_math_optimizations
+	  && opt->x_flag_unsafe_math_optimizations
-	  && opt->flag_finite_math_only
+	  && opt->x_flag_finite_math_only
-	  && !opt->flag_signed_zeros
+	  && !opt->x_flag_signed_zeros
-	  && !opt->flag_errno_math);
+	  && !opt->x_flag_errno_math);
 }
-/* Handle a debug output -g switch.  EXTENDED is true or false to support
+/* Handle a debug output -g switch for options OPTS
+(OPTS_SET->x_write_symbols storing whether a debug type was passed
+explicitly), location LOC.  EXTENDED is true or false to support
 extended output (2 is special and means "-ggdb" was given).  */
 static void
-set_debug_level (enum debug_info_type type, int extended, const char *arg)
+set_debug_level (enum debug_info_type type, int extended, const char *arg,
-{
+		 struct gcc_options *opts, struct gcc_options *opts_set,
-static bool type_explicit;
+		 location_t loc)
+{
-use_gnu_debug_info_extensions = extended;
+opts->x_use_gnu_debug_info_extensions = extended;
 if (type == NO_DEBUG)
 {
-if (write_symbols == NO_DEBUG)
+if (opts->x_write_symbols == NO_DEBUG)
 	{
-	  write_symbols = PREFERRED_DEBUGGING_TYPE;
+	  opts->x_write_symbols = PREFERRED_DEBUGGING_TYPE;
 	  if (extended == 2)
 	    {
 #ifdef DWARF2_DEBUGGING_INFO
-	      write_symbols = DWARF2_DEBUG;
+	      opts->x_write_symbols = DWARF2_DEBUG;
 #elif defined DBX_DEBUGGING_INFO
-	      write_symbols = DBX_DEBUG;
+	      opts->x_write_symbols = DBX_DEBUG;
 #endif
 	    }
-	  if (write_symbols == NO_DEBUG)
+	  if (opts->x_write_symbols == NO_DEBUG)
-	    warning (0, "target system does not support debug output");
+	    warning_at (loc, 0, "target system does not support debug output");
 	}
 }
 else
 {
 /* Does it conflict with an already selected type?  */
-if (type_explicit && write_symbols != NO_DEBUG && type != write_symbols)
+if (opts_set->x_write_symbols != NO_DEBUG
-	error ("debug format \"%s\" conflicts with prior selection",
+	  && opts->x_write_symbols != NO_DEBUG
-	       debug_type_names[type]);
+	  && type != opts->x_write_symbols)
-write_symbols = type;
+	error_at (loc, "debug format \"%s\" conflicts with prior selection",
-type_explicit = true;
+		  debug_type_names[type]);
+opts->x_write_symbols = type;
+opts_set->x_write_symbols = type;
 }
 /* A debug flag without a level defaults to level 2.  */
 if (*arg == '\0')
 {
-if (!debug_info_level)
+if (!opts->x_debug_info_level)
-	debug_info_level = DINFO_LEVEL_NORMAL;
+	opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
 }
 else
 {
 int argval = integral_argument (arg);
 if (argval == -1)
-	error ("unrecognised debug output level \"%s\"", arg);
+	error_at (loc, "unrecognised debug output level \"%s\"", arg);
 else if (argval > 3)
-	error ("debug output level %s is too high", arg);
+	error_at (loc, "debug output level %s is too high", arg);
 else
-	debug_info_level = (enum debug_info_level) argval;
+	opts->x_debug_info_level = (enum debug_info_levels) argval;
 }
 }
-/* Return 1 if OPTION is enabled, 0 if it is disabled, or -1 if it isn't
+/* Arrange to dump core on error for diagnostic context DC.  (The
-a simple on-off switch.  */
+regular error message is still printed first, except in the case of
+abort ().)  */
-int
-option_enabled (int opt_idx)
+static void
-{
+setup_core_dumping (diagnostic_context *dc)
-const struct cl_option *option = &(cl_options[opt_idx]);
+{
+#ifdef SIGABRT
-if (option->flag_var)
+signal (SIGABRT, SIG_DFL);
-switch (option->var_type)
+#endif
+#if defined(HAVE_SETRLIMIT)
+{
+struct rlimit rlim;
+if (getrlimit (RLIMIT_CORE, &rlim) != 0)
+fatal_error ("getting core file size maximum limit: %m");
+rlim.rlim_cur = rlim.rlim_max;
+if (setrlimit (RLIMIT_CORE, &rlim) != 0)
+fatal_error ("setting core file size limit to maximum: %m");
+}
+#endif
+diagnostic_abort_on_error (dc);
+}
+/* Parse a -d<ARG> command line switch for OPTS, location LOC,
+diagnostic context DC.  */
+static void
+decode_d_option (const char *arg, struct gcc_options *opts,
+		 location_t loc, diagnostic_context *dc)
+{
+int c;
+while (*arg)
+switch (c = *arg++)
 {
-case CLVC_BOOLEAN:
+case 'A':
-	return *(int *) option->flag_var != 0;
+	opts->x_flag_debug_asm = 1;
+	break;
-case CLVC_EQUAL:
+case 'p':
-	return *(int *) option->flag_var == option->var_value;
+	opts->x_flag_print_asm_name = 1;
+	break;
-case CLVC_BIT_CLEAR:
+case 'P':
-	return (*(int *) option->flag_var & option->var_value) == 0;
+	opts->x_flag_dump_rtl_in_asm = 1;
+	opts->x_flag_print_asm_name = 1;
-case CLVC_BIT_SET:
+	break;
-	return (*(int *) option->flag_var & option->var_value) != 0;
+case 'v':
+	opts->x_graph_dump_format = vcg;
-case CLVC_STRING:
+	break;
+case 'x':
+	opts->x_rtl_dump_and_exit = 1;
+	break;
+case 'D':	/* These are handled by the preprocessor.  */
+case 'I':
+case 'M':
+case 'N':
+case 'U':
+	break;
+case 'H':
+	setup_core_dumping (dc);
+	break;
+case 'a':
+	opts->x_flag_dump_all_passed = true;
+	break;
+default:
+	  warning_at (loc, 0, "unrecognized gcc debugging option: %c", c);
 	break;
 }
-return -1;
+}
-}
+/* Enable (or disable if VALUE is 0) a warning option ARG (language
-/* Fill STATE with the current state of option OPTION.  Return true if
+mask LANG_MASK, option handlers HANDLERS) as an error for option
-there is some state to store.  */
+structures OPTS and OPTS_SET, diagnostic context DC (possibly
+NULL), location LOC.  This is used by -Werror=.  */
-bool
-get_option_state (int option, struct cl_option_state *state)
+static void
-{
+enable_warning_as_error (const char *arg, int value, unsigned int lang_mask,
-if (cl_options[option].flag_var == 0)
+			 const struct cl_option_handlers *handlers,
-return false;
+			 struct gcc_options *opts,
+			 struct gcc_options *opts_set,
-switch (cl_options[option].var_type)
+			 location_t loc, diagnostic_context *dc)
-{
-case CLVC_BOOLEAN:
-case CLVC_EQUAL:
-state->data = cl_options[option].flag_var;
-state->size = sizeof (int);
-break;
-case CLVC_BIT_CLEAR:
-case CLVC_BIT_SET:
-state->ch = option_enabled (option);
-state->data = &state->ch;
-state->size = 1;
-break;
-case CLVC_STRING:
-state->data = *(const char **) cl_options[option].flag_var;
-if (state->data == 0)
-	state->data = "";
-state->size = strlen ((const char *) state->data) + 1;
-break;
-}
-return true;
-}
-/* Set *OPTION according to VALUE and ARG.  */
-void
-set_option (int opt_index, int value, const char *arg, int kind)
-{
-const struct cl_option *option = &cl_options[opt_index];
-if (!option->flag_var)
-return;
-switch (option->var_type)
-{
-case CLVC_BOOLEAN:
-	*(int *) option->flag_var = value;
-	break;
-case CLVC_EQUAL:
-	*(int *) option->flag_var = (value
-				     ? option->var_value
-				     : !option->var_value);
-	break;
-case CLVC_BIT_CLEAR:
-case CLVC_BIT_SET:
-	if ((value != 0) == (option->var_type == CLVC_BIT_SET))
-	  *(int *) option->flag_var |= option->var_value;
-	else
-	  *(int *) option->flag_var &= ~option->var_value;
-	if (option->flag_var == &target_flags)
-	  target_flags_explicit |= option->var_value;
-	break;
-case CLVC_STRING:
-	*(const char **) option->flag_var = arg;
-	break;
-}
-if ((diagnostic_t)kind != DK_UNSPECIFIED)
-diagnostic_classify_diagnostic (global_dc, opt_index, (diagnostic_t)kind);
-}
-/* Callback function, called when -Werror= enables a warning.  */
-static void (*warning_as_error_callback) (int) = NULL;
-/* Register a callback for enable_warning_as_error calls.  */
-void
-register_warning_as_error_callback (void (*callback) (int))
-{
-gcc_assert (warning_as_error_callback == NULL || callback == NULL);
-warning_as_error_callback = callback;
-}
-/* Enable a warning option as an error.  This is used by -Werror= and
-also by legacy Werror-implicit-function-declaration.  */
-void
-enable_warning_as_error (const char *arg, int value, unsigned int lang_mask)
 {
 char *new_option;
 int option_index;
 new_option = XNEWVEC (char, strlen (arg) + 2);
 new_option[0] = 'W';
 strcpy (new_option + 1, arg);
 option_index = find_opt (new_option, lang_mask);
-if (option_index == N_OPTS)
+if (option_index == OPT_SPECIAL_unknown)
 {
-error ("-Werror=%s: No option -%s", arg, new_option);
+error_at (loc, "-Werror=%s: no option -%s", arg, new_option);
 }
 else
 {
 const diagnostic_t kind = value ? DK_ERROR : DK_WARNING;
-diagnostic_classify_diagnostic (global_dc, option_index, kind);
+control_warning_option (option_index, (int) kind, value,
-if (kind == DK_ERROR)
+			      loc, lang_mask,
-	{
+			      handlers, opts, opts_set, dc);
-	  const struct cl_option * const option = cl_options + option_index;
-	  /* -Werror=foo implies -Wfoo.  */
-	  if (option->var_type == CLVC_BOOLEAN)
-	    handle_option (option_index, value, arg, lang_mask, (int)kind);
-	  if (warning_as_error_callback)
-	    warning_as_error_callback (option_index);
-	}
 }
 free (new_option);
 }
+/* Return malloced memory for the name of the option OPTION_INDEX
+which enabled a diagnostic (context CONTEXT), originally of type
+ORIG_DIAG_KIND but possibly converted to DIAG_KIND by options such
+as -Werror.  */
+char *
+option_name (diagnostic_context *context, int option_index,
+	     diagnostic_t orig_diag_kind, diagnostic_t diag_kind)
+{
+if (option_index)
+{
+/* A warning classified as an error.  */
+if ((orig_diag_kind == DK_WARNING || orig_diag_kind == DK_PEDWARN)
+	  && diag_kind == DK_ERROR)
+	return concat (cl_options[OPT_Werror_].opt_text,
+		       /* Skip over "-W".  */
+		       cl_options[option_index].opt_text + 2,
+		       NULL);
+/* A warning with option.  */
+else
+	return xstrdup (cl_options[option_index].opt_text);
+}
+/* A warning without option classified as an error.  */
+else if (orig_diag_kind == DK_WARNING || orig_diag_kind == DK_PEDWARN
+	   || diag_kind == DK_WARNING)
+{
+if (context->warning_as_error_requested)
+	return xstrdup (cl_options[OPT_Werror].opt_text);
+else
+	return xstrdup (_("enabled by default"));
+}
+else
+return NULL;
+}

Mercurial > hg > CbC > CbC_gcc

comparison gcc/opts.c @ 67:f6334be47118