[gcc.git] / gcc / opts-global.c

/* Command line option handling.  Code involving global state that
   should not be shared with the driver.
   Copyright (C) 2002-2016 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */

#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "backend.h"
#include "rtl.h"
#include "tree.h"
#include "tree-pass.h"
#include "diagnostic.h"
#include "opts.h"
#include "flags.h"
#include "langhooks.h"
#include "dbgcnt.h"
#include "debug.h"
#include "output.h"
#include "plugin.h"
#include "toplev.h"
#include "context.h"
#include "asan.h"

typedef const char *const_char_p; /* For DEF_VEC_P.  */

static vec<const_char_p> ignored_options;

/* Input file names.  */
const char **in_fnames;
unsigned num_in_fnames;

/* Return a malloced slash-separated list of languages in MASK.  */

char *
write_langs (unsigned int mask)
{
  unsigned int n = 0, len = 0;
  const char *lang_name;
  char *result;

  for (n = 0; (lang_name = lang_names[n]) != 0; n++)
    if (mask & (1U << n))
      len += strlen (lang_name) + 1;

  result = XNEWVEC (char, len);
  len = 0;
  for (n = 0; (lang_name = lang_names[n]) != 0; n++)
    if (mask & (1U << n))
      {
	if (len)
	  result[len++] = '/';
	strcpy (result + len, lang_name);
	len += strlen (lang_name);
      }

  result[len] = 0;

  return result;
}

/* Complain that switch DECODED does not apply to this front end (mask
   LANG_MASK).  */

static void
complain_wrong_lang (const struct cl_decoded_option *decoded,
		     unsigned int lang_mask)
{
  const struct cl_option *option = &cl_options[decoded->opt_index];
  const char *text = decoded->orig_option_with_args_text;
  char *ok_langs = NULL, *bad_lang = NULL;
  unsigned int opt_flags = option->flags;

  if (!lang_hooks.complain_wrong_lang_p (option))
    return;

  opt_flags &= ((1U << cl_lang_count) - 1) | CL_DRIVER;
  if (opt_flags != CL_DRIVER)
    ok_langs = write_langs (opt_flags);
  if (lang_mask != CL_DRIVER)
    bad_lang = write_langs (lang_mask);

  if (opt_flags == CL_DRIVER)
    error ("command line option %qs is valid for the driver but not for %s",
	   text, bad_lang);
  else if (lang_mask == CL_DRIVER)
    gcc_unreachable ();
  else
    /* Eventually this should become a hard error IMO.  */
    warning (0, "command line option %qs 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 unrecognized -Wno-* option should never change
   whether the compilation succeeds or fails.  */

static void
postpone_unknown_option_warning (const char *opt)
{
  ignored_options.safe_push (opt);
}

/* Produce a warning for each option previously buffered.  */

void
print_ignored_options (void)
{
  while (!ignored_options.is_empty ())
    {
      const char *opt;

      opt = ignored_options.pop ();
      warning_at (UNKNOWN_LOCATION, 0,
		  "unrecognized command line option %qs", opt);
    }
}

/* Handle an unknown option DECODED, returning true if an error should
   be given.  */

static bool
unknown_option_callback (const struct cl_decoded_option *decoded)
{
  const char *opt = decoded->arg;

  if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
      && !(decoded->errors & CL_ERR_NEGATIVE))
    {
      /* We don't generate warnings for unknown -Wno-* options unless
	 we issue diagnostics.  */
      postpone_unknown_option_warning (opt);
      return false;
    }
  else
    return true;
}

/* Handle a front-end option; arguments and return value as for
   handle_option.  */

static bool
lang_handle_option (struct gcc_options *opts,
		    struct gcc_options *opts_set,
		    const struct cl_decoded_option *decoded,
		    unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
		    location_t loc,
		    const struct cl_option_handlers *handlers,
		    diagnostic_context *dc)
{
  gcc_assert (opts == &global_options);
  gcc_assert (opts_set == &global_options_set);
  gcc_assert (dc == global_dc);
  gcc_assert (decoded->canonical_option_num_elements <= 2);
  return lang_hooks.handle_option (decoded->opt_index, decoded->arg,
				   decoded->value, kind, loc, handlers);
}

/* 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;
}

/* Handle the vector of command line options (located at LOC), storing
   the results of processing DECODED_OPTIONS and DECODED_OPTIONS_COUNT
   in OPTS and OPTS_SET and using DC for diagnostic state.  LANG_MASK
   contains has a single bit set representing the current language.
   HANDLERS describes what functions to call for the options.  */

static void
read_cmdline_options (struct gcc_options *opts, struct gcc_options *opts_set,
		      struct cl_decoded_option *decoded_options,
		      unsigned int decoded_options_count,
		      location_t loc,
		      unsigned int lang_mask,
		      const struct cl_option_handlers *handlers,
		      diagnostic_context *dc)
{
  unsigned int i;

  for (i = 1; i < decoded_options_count; i++)
    {
      if (decoded_options[i].opt_index == OPT_SPECIAL_input_file)
	{
	  /* Input files should only ever appear on the main command
	     line.  */
	  gcc_assert (opts == &global_options);
	  gcc_assert (opts_set == &global_options_set);

	  if (opts->x_main_input_filename == NULL)
	    {
	      opts->x_main_input_filename = decoded_options[i].arg;
	      opts->x_main_input_baselength
		= base_of_path (opts->x_main_input_filename,
				&opts->x_main_input_basename);
	    }
	  add_input_filename (decoded_options[i].arg);
	  continue;
	}

      read_cmdline_option (opts, opts_set,
			   decoded_options + i, loc, lang_mask, handlers,
			   dc);
    }
}

/* Language mask determined at initialization.  */
static unsigned int initial_lang_mask;

/* Initialize global options-related settings at start-up.  */

void
init_options_once (void)
{
  /* Perform language-specific options initialization.  */
  initial_lang_mask = lang_hooks.option_lang_mask ();

  lang_hooks.initialize_diagnostics (global_dc);
  /* ??? Ideally, we should do this earlier and the FEs will override
     it if desired (none do it so far).  However, the way the FEs
     construct their pretty-printers means that all previous settings
     are overriden.  */
  diagnostic_color_init (global_dc);
}

/* Decode command-line options to an array, like
   decode_cmdline_options_to_array and with the same arguments but
   using the default lang_mask.  */

void
decode_cmdline_options_to_array_default_mask (unsigned int argc,
					      const char **argv, 
					      struct cl_decoded_option **decoded_options,
					      unsigned int *decoded_options_count)
{
  decode_cmdline_options_to_array (argc, argv,
				   initial_lang_mask | CL_COMMON | CL_TARGET,
				   decoded_options, decoded_options_count);
}

/* Set *HANDLERS to the default set of option handlers for use in the
   compilers proper (not the driver).  */
void
set_default_handlers (struct cl_option_handlers *handlers)
{
  handlers->unknown_option_callback = unknown_option_callback;
  handlers->wrong_lang_callback = complain_wrong_lang;
  handlers->num_handlers = 3;
  handlers->handlers[0].handler = lang_handle_option;
  handlers->handlers[0].mask = initial_lang_mask;
  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;
}

/* Parse command line options and set default flag values.  Do minimal
   options processing.  The decoded options are in *DECODED_OPTIONS
   and *DECODED_OPTIONS_COUNT; settings go in OPTS, OPTS_SET and DC;
   the options are located at LOC.  */
void
decode_options (struct gcc_options *opts, struct gcc_options *opts_set,
		struct cl_decoded_option *decoded_options,
		unsigned int decoded_options_count,
		location_t loc, diagnostic_context *dc)
{
  struct cl_option_handlers handlers;

  unsigned int lang_mask;

  lang_mask = initial_lang_mask;

  set_default_handlers (&handlers);

  default_options_optimization (opts, opts_set,
				decoded_options, decoded_options_count,
				loc, lang_mask, &handlers, dc);

  read_cmdline_options (opts, opts_set,
			decoded_options, decoded_options_count,
			loc, lang_mask,
			&handlers, dc);

  finish_options (opts, opts_set, loc);
}

/* Hold command-line options associated with stack limitation.  */
const char *opt_fstack_limit_symbol_arg = NULL;
int opt_fstack_limit_register_no = -1;

/* Process common options that have been deferred until after the
   handlers have been called for all options.  */

void
handle_common_deferred_options (void)
{
  unsigned int i;
  cl_deferred_option *opt;
  vec<cl_deferred_option> v;

  if (common_deferred_options)
    v = *((vec<cl_deferred_option> *) common_deferred_options);
  else
    v = vNULL;

  if (flag_dump_all_passed)
    enable_rtl_dump_file ();

  if (flag_opt_info)
    opt_info_switch_p (NULL);

  FOR_EACH_VEC_ELT (v, i, opt)
    {
      switch (opt->opt_index)
	{
	case OPT_fcall_used_:
	  fix_register (opt->arg, 0, 1);
	  break;

	case OPT_fcall_saved_:
	  fix_register (opt->arg, 0, 0);
	  break;

	case OPT_fdbg_cnt_:
	  dbg_cnt_process_opt (opt->arg);
	  break;

	case OPT_fdbg_cnt_list:
	  dbg_cnt_list_all_counters ();
	  break;

	case OPT_fdebug_prefix_map_:
	  add_debug_prefix_map (opt->arg);
	  break;

	case OPT_fdump_:
	  if (!g->get_dumps ()->dump_switch_p (opt->arg))
	    error ("unrecognized command line option %<-fdump-%s%>", opt->arg);
	  break;

        case OPT_fopt_info_:
	  if (!opt_info_switch_p (opt->arg))
	    error ("unrecognized command line option %<-fopt-info-%s%>",
                   opt->arg);
          break;

	case OPT_fenable_:
	case OPT_fdisable_:
	  if (opt->opt_index == OPT_fenable_)
	    enable_pass (opt->arg);
          else
	    disable_pass (opt->arg);
          break;

	case OPT_ffixed_:
	  /* Deferred.  */
	  fix_register (opt->arg, 1, 1);
	  break;

	case OPT_fplugin_:
#ifdef ENABLE_PLUGIN
	  add_new_plugin (opt->arg);
#else
	  error ("plugin support is disabled; configure with --enable-plugin");
#endif
	  break;

	case OPT_fplugin_arg_:
#ifdef ENABLE_PLUGIN
	  parse_plugin_arg_opt (opt->arg);
#else
	  error ("plugin support is disabled; configure with --enable-plugin");
#endif
	  break;

	case OPT_frandom_seed:
	  /* The real switch is -fno-random-seed.  */
	  if (!opt->value)
	    set_random_seed (NULL);
	  break;

	case OPT_frandom_seed_:
	  set_random_seed (opt->arg);
	  break;

	case OPT_fstack_limit:
	  /* The real switch is -fno-stack-limit.  */
	  if (!opt->value)
	    stack_limit_rtx = NULL_RTX;
	  break;

	case OPT_fstack_limit_register_:
	  {
	    int reg = decode_reg_name (opt->arg);
	    if (reg < 0)
	      error ("unrecognized register name %qs", opt->arg);
	    else
	      {
		/* Deactivate previous OPT_fstack_limit_symbol_ options.  */
		opt_fstack_limit_symbol_arg = NULL;
		opt_fstack_limit_register_no = reg;
	      }
	  }
	  break;

	case OPT_fstack_limit_symbol_:
	  /* Deactivate previous OPT_fstack_limit_register_ options.  */
	  opt_fstack_limit_register_no = -1;
	  opt_fstack_limit_symbol_arg = opt->arg;
	  break;

	case OPT_fasan_shadow_offset_:
	  if (!(flag_sanitize & SANITIZE_KERNEL_ADDRESS))
	    error ("-fasan-shadow-offset should only be used "
		   "with -fsanitize=kernel-address");
	  if (!set_asan_shadow_offset (opt->arg))
	     error ("unrecognized shadow offset %qs", opt->arg);
	  break;

	case OPT_fsanitize_sections_:
	  set_sanitized_sections (opt->arg);
	  break;

	default:
	  gcc_unreachable ();
	}
    }
}
Commit	Line	Data
21bf1558 JM	1	/* Command line option handling. Code involving global state that
21bf1558 JM	2	should not be shared with the driver.
818ab71a	3	Copyright (C) 2002-2016 Free Software Foundation, Inc.
21bf1558 JM	4
	5	This file is part of GCC.
	6
	7	GCC is free software; you can redistribute it and/or modify it under
	8	the terms of the GNU General Public License as published by the Free
	9	Software Foundation; either version 3, or (at your option) any later
	10	version.
	11
	12	GCC is distributed in the hope that it will be useful, but WITHOUT ANY
	13	WARRANTY; without even the implied warranty of MERCHANTABILITY or
	14	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	15	for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with GCC; see the file COPYING3. If not see
	19	<http://www.gnu.org/licenses/>. */
	20
	21	#include "config.h"
	22	#include "system.h"
	23	#include "coretypes.h"
957060b5	24	#include "backend.h"
957060b5 AM	25	#include "rtl.h"
957060b5 AM	26	#include "tree.h"
957060b5	27	#include "tree-pass.h"
c98cd5bf	28	#include "diagnostic.h"
21bf1558 JM	29	#include "opts.h"
21bf1558 JM	30	#include "flags.h"
c98cd5bf	31	#include "langhooks.h"
299404a1 JM	32	#include "dbgcnt.h"
299404a1 JM	33	#include "debug.h"
21bf1558 JM	34	#include "output.h"
21bf1558 JM	35	#include "plugin.h"
c98cd5bf	36	#include "toplev.h"
47e0da37	37	#include "context.h"
fd960af2	38	#include "asan.h"
21bf1558	39
c98cd5bf	40	typedef const char const_char_p; / For DEF_VEC_P. */
c98cd5bf	41
9771b263	42	static vec<const_char_p> ignored_options;
c98cd5bf JM	43
	44	/* Input file names. */
	45	const char **in_fnames;
	46	unsigned num_in_fnames;
	47
	48	/* Return a malloced slash-separated list of languages in MASK. */
	49
c1822f9c	50	char *
c98cd5bf JM	51	write_langs (unsigned int mask)
	52	{
	53	unsigned int n = 0, len = 0;
	54	const char *lang_name;
	55	char *result;
	56
	57	for (n = 0; (lang_name = lang_names[n]) != 0; n++)
	58	if (mask & (1U << n))
	59	len += strlen (lang_name) + 1;
	60
	61	result = XNEWVEC (char, len);
	62	len = 0;
	63	for (n = 0; (lang_name = lang_names[n]) != 0; n++)
	64	if (mask & (1U << n))
	65	{
	66	if (len)
	67	result[len++] = '/';
	68	strcpy (result + len, lang_name);
	69	len += strlen (lang_name);
	70	}
	71
	72	result[len] = 0;
	73
	74	return result;
	75	}
	76
	77	/* Complain that switch DECODED does not apply to this front end (mask
	78	LANG_MASK). */
	79
	80	static void
	81	complain_wrong_lang (const struct cl_decoded_option *decoded,
	82	unsigned int lang_mask)
	83	{
	84	const struct cl_option *option = &cl_options[decoded->opt_index];
	85	const char *text = decoded->orig_option_with_args_text;
	86	char ok_langs = NULL, bad_lang = NULL;
	87	unsigned int opt_flags = option->flags;
	88
	89	if (!lang_hooks.complain_wrong_lang_p (option))
	90	return;
	91
	92	opt_flags &= ((1U << cl_lang_count) - 1) \| CL_DRIVER;
	93	if (opt_flags != CL_DRIVER)
	94	ok_langs = write_langs (opt_flags);
	95	if (lang_mask != CL_DRIVER)
	96	bad_lang = write_langs (lang_mask);
	97
	98	if (opt_flags == CL_DRIVER)
	99	error ("command line option %qs is valid for the driver but not for %s",
	100	text, bad_lang);
	101	else if (lang_mask == CL_DRIVER)
	102	gcc_unreachable ();
	103	else
	104	/* Eventually this should become a hard error IMO. */
	105	warning (0, "command line option %qs is valid for %s but not for %s",
	106	text, ok_langs, bad_lang);
	107
	108	free (ok_langs);
	109	free (bad_lang);
	110	}
	111
	112	/* Buffer the unknown option described by the string OPT. Currently,
	113	we only complain about unknown -Wno-* options if they may have
	114	prevented a diagnostic. Otherwise, we just ignore them. Note that
115	if we do complain, it is only as a warning, not an error; passing
778e02fd	116	the compiler an unrecognized -Wno-* option should never change
c98cd5bf JM	117	whether the compilation succeeds or fails. */
	118
	119	static void
	120	postpone_unknown_option_warning (const char *opt)
	121	{
9771b263	122	ignored_options.safe_push (opt);
c98cd5bf JM	123	}
	124
	125	/* Produce a warning for each option previously buffered. */
	126
	127	void
	128	print_ignored_options (void)
	129	{
9771b263	130	while (!ignored_options.is_empty ())
c98cd5bf JM	131	{
	132	const char *opt;
	133
9771b263	134	opt = ignored_options.pop ();
c98cd5bf	135	warning_at (UNKNOWN_LOCATION, 0,
778e02fd	136	"unrecognized command line option %qs", opt);
c98cd5bf JM	137	}
	138	}
	139
	140	/* Handle an unknown option DECODED, returning true if an error should
	141	be given. */
	142
	143	static bool
	144	unknown_option_callback (const struct cl_decoded_option *decoded)
	145	{
	146	const char *opt = decoded->arg;
	147
	148	if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
	149	&& !(decoded->errors & CL_ERR_NEGATIVE))
	150	{
	151	/* We don't generate warnings for unknown -Wno-* options unless
	152	we issue diagnostics. */
	153	postpone_unknown_option_warning (opt);
	154	return false;
	155	}
	156	else
	157	return true;
	158	}
	159
c98cd5bf JM	160	/* Handle a front-end option; arguments and return value as for
	161	handle_option. */
	162
	163	static bool
	164	lang_handle_option (struct gcc_options *opts,
	165	struct gcc_options *opts_set,
	166	const struct cl_decoded_option *decoded,
	167	unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
	168	location_t loc,
	169	const struct cl_option_handlers *handlers,
	170	diagnostic_context *dc)
	171	{
	172	gcc_assert (opts == &global_options);
	173	gcc_assert (opts_set == &global_options_set);
	174	gcc_assert (dc == global_dc);
	175	gcc_assert (decoded->canonical_option_num_elements <= 2);
	176	return lang_hooks.handle_option (decoded->opt_index, decoded->arg,
	177	decoded->value, kind, loc, handlers);
	178	}
	179
	180	/* Handle FILENAME from the command line. */
	181
	182	static void
	183	add_input_filename (const char *filename)
	184	{
	185	num_in_fnames++;
	186	in_fnames = XRESIZEVEC (const char *, in_fnames, num_in_fnames);
	187	in_fnames[num_in_fnames - 1] = filename;
	188	}
	189
	190	/* Handle the vector of command line options (located at LOC), storing
	191	the results of processing DECODED_OPTIONS and DECODED_OPTIONS_COUNT
	192	in OPTS and OPTS_SET and using DC for diagnostic state. LANG_MASK
	193	contains has a single bit set representing the current language.
	194	HANDLERS describes what functions to call for the options. */
	195
	196	static void
	197	read_cmdline_options (struct gcc_options opts, struct gcc_options opts_set,
	198	struct cl_decoded_option *decoded_options,
	199	unsigned int decoded_options_count,
	200	location_t loc,
	201	unsigned int lang_mask,
	202	const struct cl_option_handlers *handlers,
	203	diagnostic_context *dc)
	204	{
	205	unsigned int i;
	206
	207	for (i = 1; i < decoded_options_count; i++)
	208	{
	209	if (decoded_options[i].opt_index == OPT_SPECIAL_input_file)
	210	{
	211	/* Input files should only ever appear on the main command
	212	line. */
	213	gcc_assert (opts == &global_options);
	214	gcc_assert (opts_set == &global_options_set);
	215
a803773f	216	if (opts->x_main_input_filename == NULL)
c98cd5bf	217	{
a803773f JM	218	opts->x_main_input_filename = decoded_options[i].arg;
	219	opts->x_main_input_baselength
	220	= base_of_path (opts->x_main_input_filename,
	221	&opts->x_main_input_basename);
c98cd5bf JM	222	}
	223	add_input_filename (decoded_options[i].arg);
	224	continue;
	225	}
	226
	227	read_cmdline_option (opts, opts_set,
	228	decoded_options + i, loc, lang_mask, handlers,
	229	dc);
	230	}
	231	}
	232
	233	/* Language mask determined at initialization. */
	234	static unsigned int initial_lang_mask;
	235
	236	/* Initialize global options-related settings at start-up. */
	237
	238	void
	239	init_options_once (void)
	240	{
	241	/* Perform language-specific options initialization. */
	242	initial_lang_mask = lang_hooks.option_lang_mask ();
	243
	244	lang_hooks.initialize_diagnostics (global_dc);
97aa8bb6 MLI	245	/* ??? Ideally, we should do this earlier and the FEs will override
	246	it if desired (none do it so far). However, the way the FEs
	247	construct their pretty-printers means that all previous settings
	248	are overriden. */
	249	diagnostic_color_init (global_dc);
c98cd5bf JM	250	}
	251
	252	/* Decode command-line options to an array, like
	253	decode_cmdline_options_to_array and with the same arguments but
	254	using the default lang_mask. */
	255
	256	void
	257	decode_cmdline_options_to_array_default_mask (unsigned int argc,
	258	const char **argv,
	259	struct cl_decoded_option **decoded_options,
	260	unsigned int *decoded_options_count)
	261	{
	262	decode_cmdline_options_to_array (argc, argv,
	263	initial_lang_mask \| CL_COMMON \| CL_TARGET,
	264	decoded_options, decoded_options_count);
	265	}
	266
	267	/* Set *HANDLERS to the default set of option handlers for use in the
	268	compilers proper (not the driver). */
	269	void
	270	set_default_handlers (struct cl_option_handlers *handlers)
	271	{
	272	handlers->unknown_option_callback = unknown_option_callback;
	273	handlers->wrong_lang_callback = complain_wrong_lang;
c98cd5bf JM	274	handlers->num_handlers = 3;
	275	handlers->handlers[0].handler = lang_handle_option;
	276	handlers->handlers[0].mask = initial_lang_mask;
	277	handlers->handlers[1].handler = common_handle_option;
	278	handlers->handlers[1].mask = CL_COMMON;
	279	handlers->handlers[2].handler = target_handle_option;
	280	handlers->handlers[2].mask = CL_TARGET;
	281	}
	282
	283	/* Parse command line options and set default flag values. Do minimal
	284	options processing. The decoded options are in *DECODED_OPTIONS
	285	and *DECODED_OPTIONS_COUNT; settings go in OPTS, OPTS_SET and DC;
	286	the options are located at LOC. */
	287	void
	288	decode_options (struct gcc_options opts, struct gcc_options opts_set,
	289	struct cl_decoded_option *decoded_options,
	290	unsigned int decoded_options_count,
	291	location_t loc, diagnostic_context *dc)
	292	{
	293	struct cl_option_handlers handlers;
	294
	295	unsigned int lang_mask;
	296
	297	lang_mask = initial_lang_mask;
	298
	299	set_default_handlers (&handlers);
	300
c98cd5bf JM	301	default_options_optimization (opts, opts_set,
	302	decoded_options, decoded_options_count,
	303	loc, lang_mask, &handlers, dc);
	304
c98cd5bf JM	305	read_cmdline_options (opts, opts_set,
	306	decoded_options, decoded_options_count,
	307	loc, lang_mask,
	308	&handlers, dc);
	309
299404a1	310	finish_options (opts, opts_set, loc);
c98cd5bf JM	311	}
c98cd5bf JM	312
ecf835e9 KN	313	/* Hold command-line options associated with stack limitation. */
	314	const char *opt_fstack_limit_symbol_arg = NULL;
	315	int opt_fstack_limit_register_no = -1;
	316
c98cd5bf JM	317	/* Process common options that have been deferred until after the
	318	handlers have been called for all options. */
	319
21bf1558 JM	320	void
	321	handle_common_deferred_options (void)
	322	{
	323	unsigned int i;
	324	cl_deferred_option *opt;
9771b263 DN	325	vec<cl_deferred_option> v;
	326
	327	if (common_deferred_options)
	328	v = ((vec<cl_deferred_option> ) common_deferred_options);
	329	else
6e1aa848	330	v = vNULL;
21bf1558	331
299404a1 JM	332	if (flag_dump_all_passed)
	333	enable_rtl_dump_file ();
	334
78c60e3d SS	335	if (flag_opt_info)
	336	opt_info_switch_p (NULL);
	337
9771b263	338	FOR_EACH_VEC_ELT (v, i, opt)
21bf1558 JM	339	{
	340	switch (opt->opt_index)
	341	{
	342	case OPT_fcall_used_:
	343	fix_register (opt->arg, 0, 1);
	344	break;
	345
	346	case OPT_fcall_saved_:
	347	fix_register (opt->arg, 0, 0);
	348	break;
	349
299404a1 JM	350	case OPT_fdbg_cnt_:
	351	dbg_cnt_process_opt (opt->arg);
	352	break;
	353
	354	case OPT_fdbg_cnt_list:
	355	dbg_cnt_list_all_counters ();
	356	break;
	357
	358	case OPT_fdebug_prefix_map_:
	359	add_debug_prefix_map (opt->arg);
	360	break;
	361
21bf1558	362	case OPT_fdump_:
47e0da37	363	if (!g->get_dumps ()->dump_switch_p (opt->arg))
21bf1558 JM	364	error ("unrecognized command line option %<-fdump-%s%>", opt->arg);
	365	break;
	366
78c60e3d SS	367	case OPT_fopt_info_:
78c60e3d SS	368	if (!opt_info_switch_p (opt->arg))
2b4e6bf1	369	error ("unrecognized command line option %<-fopt-info-%s%>",
78c60e3d SS	370	opt->arg);
	371	break;
	372
226c52aa XDL	373	case OPT_fenable_:
	374	case OPT_fdisable_:
	375	if (opt->opt_index == OPT_fenable_)
	376	enable_pass (opt->arg);
	377	else
	378	disable_pass (opt->arg);
	379	break;
	380
21bf1558 JM	381	case OPT_ffixed_:
	382	/* Deferred. */
	383	fix_register (opt->arg, 1, 1);
	384	break;
	385
	386	case OPT_fplugin_:
	387	#ifdef ENABLE_PLUGIN
	388	add_new_plugin (opt->arg);
	389	#else
	390	error ("plugin support is disabled; configure with --enable-plugin");
	391	#endif
	392	break;
	393
	394	case OPT_fplugin_arg_:
	395	#ifdef ENABLE_PLUGIN
	396	parse_plugin_arg_opt (opt->arg);
	397	#else
	398	error ("plugin support is disabled; configure with --enable-plugin");
	399	#endif
	400	break;
	401
299404a1 JM	402	case OPT_frandom_seed:
	403	/* The real switch is -fno-random-seed. */
	404	if (!opt->value)
	405	set_random_seed (NULL);
	406	break;
	407
	408	case OPT_frandom_seed_:
	409	set_random_seed (opt->arg);
	410	break;
	411
21bf1558 JM	412	case OPT_fstack_limit:
21bf1558 JM	413	/* The real switch is -fno-stack-limit. */
299404a1 JM	414	if (!opt->value)
299404a1 JM	415	stack_limit_rtx = NULL_RTX;
21bf1558 JM	416	break;
	417
	418	case OPT_fstack_limit_register_:
	419	{
	420	int reg = decode_reg_name (opt->arg);
	421	if (reg < 0)
	422	error ("unrecognized register name %qs", opt->arg);
	423	else
ecf835e9 KN	424	{
	425	/* Deactivate previous OPT_fstack_limit_symbol_ options. */
	426	opt_fstack_limit_symbol_arg = NULL;
	427	opt_fstack_limit_register_no = reg;
	428	}
21bf1558 JM	429	}
	430	break;
	431
	432	case OPT_fstack_limit_symbol_:
ecf835e9 KN	433	/* Deactivate previous OPT_fstack_limit_register_ options. */
	434	opt_fstack_limit_register_no = -1;
	435	opt_fstack_limit_symbol_arg = opt->arg;
21bf1558 JM	436	break;
21bf1558 JM	437
fd960af2 YG	438	case OPT_fasan_shadow_offset_:
	439	if (!(flag_sanitize & SANITIZE_KERNEL_ADDRESS))
	440	error ("-fasan-shadow-offset should only be used "
	441	"with -fsanitize=kernel-address");
	442	if (!set_asan_shadow_offset (opt->arg))
	443	error ("unrecognized shadow offset %qs", opt->arg);
	444	break;
	445
18af8d16 YG	446	case OPT_fsanitize_sections_:
	447	set_sanitized_sections (opt->arg);
	448	break;
	449
21bf1558 JM	450	default:
	451	gcc_unreachable ();
	452	}
	453	}
	454	}