common.opt (in_lto_p): New Variable entry.

* common.opt (in_lto_p): New Variable entry.
	* flags.h (in_lto_p): Move to common.opt.
	* gcc.c: Include params.h.
	(set_option_handlers): Also use common_handle_option and
	target_handle_option.
	(main): Call global_init_params, finish_params and
	init_options_struct.
	* opts.c (debug_type_names): Move from toplev.c.
	(print_filtered_help): Access quiet_flag through opts pointer.
	(common_handle_option): Return early in the driver for some
	options.  Access in_lto_p, dwarf_version and
	warn_maybe_uninitialized through opts pointer.
	* toplev.c (in_lto_p): Move to common.opt.
	(debug_type_names): Move to opts.c.
	* Makefile.in (OBJS): Remove opts.o.
	(OBJS-libcommon-target): Add opts.o.
	(gcc.o): Update dependencies.

From-SVN: r175591

gcc/ChangeLog

@@ -1,3 +1,23 @@
+2011-06-28  Joseph Myers  <joseph@codesourcery.com>
+
+	* common.opt (in_lto_p): New Variable entry.
+	* flags.h (in_lto_p): Move to common.opt.
+	* gcc.c: Include params.h.
+	(set_option_handlers): Also use common_handle_option and
+	target_handle_option.
+	(main): Call global_init_params, finish_params and
+	init_options_struct.
+	* opts.c (debug_type_names): Move from toplev.c.
+	(print_filtered_help): Access quiet_flag through opts pointer.
+	(common_handle_option): Return early in the driver for some
+	options.  Access in_lto_p, dwarf_version and
+	warn_maybe_uninitialized through opts pointer.
+	* toplev.c (in_lto_p): Move to common.opt.
+	(debug_type_names): Move to opts.c.
+	* Makefile.in (OBJS): Remove opts.o.
+	(OBJS-libcommon-target): Add opts.o.
+	(gcc.o): Update dependencies.
+
 2011-06-28  Kai Tietz  <ktietz@redhat.com>
 
 	* tree-ssa-forwprop.c (simplify_bitwise_binary): Improve

gcc/Makefile.in

@@ -1354,7 +1354,6 @@ OBJS = \
 	optabs.o \
 	options-save.o \
 	opts-global.o \
-	opts.o \
 	passes.o \
 	plugin.o \
 	pointer-set.o \
@@ -1504,7 +1503,7 @@ OBJS-libcommon = diagnostic.o pretty-print.o intl.o input.o version.o
 # Objects in libcommon-target.a, used by drivers and by the core
 # compiler and containing target-dependent code.
 OBJS-libcommon-target = $(common_out_object_file) prefix.o params.o \
-	opts-common.o options.o vec.o hooks.o common/common-targhooks.o
+	opts.o opts-common.o options.o vec.o hooks.o common/common-targhooks.o
 
 # This lists all host objects for the front ends.
 ALL_HOST_FRONTEND_OBJS = $(C_OBJS) \
@@ -2260,7 +2259,7 @@ DRIVER_DEFINES = \
 
 gcc.o: gcc.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) intl.h multilib.h \
     Makefile $(lang_specs_files) specs.h prefix.h $(GCC_H) $(FLAGS_H) \
-    configargs.h $(OBSTACK_H) $(OPTS_H) $(DIAGNOSTIC_H) $(VEC_H)
+    configargs.h $(OBSTACK_H) $(OPTS_H) $(DIAGNOSTIC_H) $(VEC_H) $(PARAMS_H)
 	(SHLIB_LINK='$(SHLIB_LINK)'; \
 	$(COMPILER) $(ALL_COMPILERFLAGS) $(ALL_CPPFLAGS) \
   $(DRIVER_DEFINES) \

gcc/common.opt

@@ -37,6 +37,13 @@ int optimize_size
 Variable
 int optimize_fast
 
+; True if this is the lto front end.  This is used to disable gimple
+; generation and lowering passes that are normally run on the output
+; of a front end.  These passes must be bypassed for lto since they
+; have already been done before the gimple was written.
+Variable
+bool in_lto_p = false
+
 ; 0 means straightforward implementation of complex divide acceptable.
 ; 1 means wide ranges of inputs must work for complex divide.
 ; 2 means C99-like requirements for complex multiply and divide.

gcc/flags.h

@@ -1,6 +1,6 @@
 /* Compilation switch flag definitions for GCC.
    Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002,
-   2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+   2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -34,13 +34,6 @@ extern const char *const debug_type_names[];
 extern void strip_off_ending (char *, int);
 extern int base_of_path (const char *path, const char **base_out);
 
-/* True if this is the LTO front end (lto1).  This is used to disable
-   gimple generation and lowering passes that are normally run on the
-   output of a front end.  These passes must be bypassed for lto since
-   they have already been done before the gimple was written.  */
-
-extern bool in_lto_p;
-
 /* Return true iff flags are set as if -ffast-math.  */
 extern bool fast_math_flags_set_p (const struct gcc_options *);
 extern bool fast_math_flags_struct_set_p (struct cl_optimization *);

gcc/gcc.c

@@ -43,6 +43,7 @@ compilation is specified by a string called a "spec".  */
 #include "diagnostic.h"
 #include "flags.h"
 #include "opts.h"
+#include "params.h"
 #include "vec.h"
 #include "filenames.h"
 
@@ -3532,9 +3533,13 @@ set_option_handlers (struct cl_option_handlers *handlers)
   handlers->unknown_option_callback = driver_unknown_option_callback;
   handlers->wrong_lang_callback = driver_wrong_lang_callback;
   handlers->post_handling_callback = driver_post_handling_callback;
-  handlers->num_handlers = 1;
+  handlers->num_handlers = 3;
   handlers->handlers[0].handler = driver_handle_option;
   handlers->handlers[0].mask = CL_DRIVER;
+  handlers->handlers[1].handler = common_handle_option;
+  handlers->handlers[1].mask = CL_COMMON;
+  handlers->handlers[2].handler = target_handle_option;
+  handlers->handlers[2].mask = CL_TARGET;
 }
 
 /* Create the vector `switches' and its contents.
@@ -6156,7 +6161,11 @@ main (int argc, char **argv)
   if (argv != old_argv)
     at_file_supplied = true;
 
-  global_options = global_options_init;
+  /* Register the language-independent parameters.  */
+  global_init_params ();
+  finish_params ();
+
+  init_options_struct (&global_options, &global_options_set);
 
   decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **,
 						      argv),

gcc/opts.c

@@ -35,6 +35,12 @@ along with GCC; see the file COPYING3.  If not see
 #include "insn-attr-common.h"
 #include "common/common-target.h"
 
+/* Indexed by enum debug_info_type.  */
+const char *const debug_type_names[] =
+{
+  "none", "stabs", "coff", "dwarf-2", "xcoff", "vms"
+};
+
 /* Parse the -femit-struct-debug-detailed option value
    and set the flag variables. */
 
@@ -986,7 +992,7 @@ print_filtered_help (unsigned int include_flags,
 
       /* 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)
+      if (!opts->x_quiet_flag)
 	{
 	  void *flag_var = option_flag_var (i, opts);
 
@@ -1246,6 +1252,9 @@ common_handle_option (struct gcc_options *opts,
 	unsigned int undoc_mask;
 	unsigned int i;
 
+	if (lang_mask == CL_DRIVER)
+	  break;;
+
 	undoc_mask = ((opts->x_verbose_flag | opts->x_extra_warnings)
 		      ? 0
 		      : CL_UNDOCUMENTED);
@@ -1265,6 +1274,9 @@ common_handle_option (struct gcc_options *opts,
       }
 
     case OPT__target_help:
+      if (lang_mask == CL_DRIVER)
+	break;
+
       print_specific_help (CL_TARGET, CL_UNDOCUMENTED, 0, opts, lang_mask);
       opts->x_exit_after_options = true;
       break;
@@ -1280,6 +1292,9 @@ common_handle_option (struct gcc_options *opts,
 	   --help=target,^undocumented  */
 	unsigned int exclude_flags = 0;
 
+	if (lang_mask == CL_DRIVER)
+	  break;
+
 	/* Walk along the argument string, parsing each word in turn.
 	   The format is:
 	   arg = [^]{word}[,{arg}]
@@ -1390,6 +1405,9 @@ common_handle_option (struct gcc_options *opts,
       }
 
     case OPT__version:
+      if (lang_mask == CL_DRIVER)
+	break;
+
       opts->x_exit_after_options = true;
       break;
 
@@ -1400,6 +1418,9 @@ common_handle_option (struct gcc_options *opts,
       break;
 
     case OPT_Werror_:
+      if (lang_mask == CL_DRIVER)
+	break;
+
       enable_warning_as_error (arg, value, lang_mask, handlers,
 			       opts, opts_set, loc, dc);
       break;
@@ -1576,7 +1597,7 @@ common_handle_option (struct gcc_options *opts,
       /* FIXME: Instrumentation we insert makes ipa-reference bitmaps
 	 quadratic.  Disable the pass until better memory representation
 	 is done.  */
-      if (!opts_set->x_flag_ipa_reference && in_lto_p)
+      if (!opts_set->x_flag_ipa_reference && opts->x_in_lto_p)
         opts->x_flag_ipa_reference = false;
       break;
 
@@ -1666,7 +1687,7 @@ common_handle_option (struct gcc_options *opts,
       if (value < 2 || value > 4)
 	error_at (loc, "dwarf version %d is not supported", value);
       else
-	dwarf_version = value;
+	opts->x_dwarf_version = value;
       set_debug_level (DWARF2_DEBUG, false, "", opts, opts_set, loc);
       break;
 
@@ -1713,7 +1734,7 @@ common_handle_option (struct gcc_options *opts,
 
     case OPT_Wuninitialized:
       /* Also turn on maybe uninitialized warning.  */
-      warn_maybe_uninitialized = value;
+      opts->x_warn_maybe_uninitialized = value;
       break;
 
     default:

gcc/toplev.c

@@ -125,13 +125,6 @@ unsigned int save_decoded_options_count;
 
 const struct gcc_debug_hooks *debug_hooks;
 
-/* True if this is the lto front end.  This is used to disable
-   gimple generation and lowering passes that are normally run on the
-   output of a front end.  These passes must be bypassed for lto since
-   they have already been done before the gimple was written.  */
-
-bool in_lto_p = false;
-
 /* The FUNCTION_DECL for the function currently being compiled,
    or 0 if between functions.  */
 tree current_function_decl;
@@ -658,12 +651,6 @@ compile_file (void)
   timevar_stop (TV_PHASE_GENERATE);
 }
 
-/* Indexed by enum debug_info_type.  */
-const char *const debug_type_names[] =
-{
-  "none", "stabs", "coff", "dwarf-2", "xcoff", "vms"
-};
-
 /* Print version information to FILE.
    Each line begins with INDENT (for the case where FILE is the
    assembler output file).  */