/* Command line option handling.
- Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Contributed by Neil Booth.
#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 "target.h"
#include "tree-pass.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;
HOST_WIDE_INT larger_than_size;
/* True to warn about any function whose frame size is larger
- * than N bytes. */
+ than N bytes. */
bool warn_frame_larger_than;
HOST_WIDE_INT frame_larger_than_size;
static enum debug_struct_file debug_struct_generic[DINFO_USAGE_NUM_ENUMS]
= { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY };
+/* Run the second compilation of -fcompare-debug. Not defined using
+ Var in common.opt because this is used in Ada code and so must be
+ an actual variable not a macro. */
+int flag_compare_debug;
+
/* Parse the -femit-struct-debug-detailed option value
and set the flag variables. */
/* 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. */
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);
-static void handle_param (const char *);
-static unsigned int handle_option (const char **argv, unsigned int lang_mask);
+static bool common_handle_option (struct gcc_options *opts,
+ struct gcc_options *opts_set,
+ const struct cl_decoded_option *decoded,
+ unsigned int lang_mask, int kind,
+ const struct cl_option_handlers *handlers);
+static void handle_param (struct gcc_options *opts,
+ struct gcc_options *opts_set, const char *carg);
static char *write_langs (unsigned int lang_mask);
-static void complain_wrong_lang (const char *, const struct cl_option *,
+static void complain_wrong_lang (const struct cl_decoded_option *,
unsigned int lang_mask);
-static void handle_options (unsigned int, const char **, unsigned int);
static void set_debug_level (enum debug_info_type type, int extended,
const char *arg);
-
-/* If ARG is a non-negative integer made up solely of digits, return its
- value, otherwise return -1. */
-static int
-integral_argument (const char *arg)
-{
- const char *p = arg;
-
- while (*p && ISDIGIT (*p))
- p++;
-
- if (*p == '\0')
- return atoi (arg);
-
- return -1;
-}
+static void set_fast_math_flags (int set);
+static void set_unsafe_math_optimizations_flags (int set);
/* Return a malloced slash-separated list of languages in MASK. */
static char *
return result;
}
-/* Complain that switch OPT_INDEX does not apply to this front end. */
+/* Complain that switch DECODED does not apply to this front end (mask
+ LANG_MASK). */
static void
-complain_wrong_lang (const char *text, const struct cl_option *option,
+complain_wrong_lang (const struct cl_decoded_option *decoded,
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;
+ 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;
- ok_langs = write_langs (option->flags);
- bad_lang = write_langs (lang_mask);
+ if (!lang_hooks.complain_wrong_lang_p (option))
+ return;
- /* 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);
+ 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);
input_location = saved_loc;
}
-/* Handle the switch beginning at ARGV for the language indicated by
- LANG_MASK. Returns the number of switches consumed. */
-static unsigned int
-handle_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;
- }
+/* Handle an unknown option DECODED, returning true if an error should be
+ given. */
- /* 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;
- }
+static bool
+unknown_option_callback (const struct cl_decoded_option *decoded)
+{
+ const char *opt = decoded->arg;
- if (arg == NULL && (option->flags & (CL_JOINED | CL_SEPARATE)))
+ if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
+ && !(decoded->errors & CL_ERR_NEGATIVE))
{
- if (!lang_hooks.missing_argument (opt, opt_index))
- error ("missing argument to \"%s\"", opt);
- goto done;
+ /* We don't generate warnings for unknown -Wno-* options unless
+ we issue diagnostics. */
+ postpone_unknown_option_warning (opt);
+ return false;
}
+ else
+ return true;
+}
- /* 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;
- }
- }
+/* Note that an option DECODED has been successfully handled with a
+ handler for mask MASK. */
- if (option->flag_var)
- set_option (option, value, arg);
+static void
+post_handling_callback (const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
+ unsigned int mask ATTRIBUTE_UNUSED)
+{
+#ifdef ENABLE_LTO
+ lto_register_user_option (decoded->opt_index, decoded->arg,
+ decoded->value, mask);
+#endif
+}
- if (option->flags & lang_mask)
- {
- if (lang_hooks.handle_option (opt_index, arg, value) == 0)
- result = 0;
- else
- lto_register_user_option (opt_index, arg, value, lang_mask);
- }
+/* Handle a front-end option; arguments and return value as for
+ handle_option. */
- if (result && (option->flags & CL_COMMON))
- {
- if (common_handle_option (opt_index, arg, value, lang_mask) == 0)
- result = 0;
- else
- lto_register_user_option (opt_index, arg, value, CL_COMMON);
- }
+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,
+ const struct cl_option_handlers *handlers)
+{
+ gcc_assert (opts == &global_options);
+ gcc_assert (opts_set == &global_options_set);
+ gcc_assert (decoded->canonical_option_num_elements <= 2);
+ return lang_hooks.handle_option (decoded->opt_index, decoded->arg,
+ decoded->value, kind, handlers);
+}
- if (result && (option->flags & CL_TARGET))
- {
- if (!targetm.handle_option (opt_index, arg, value))
- result = 0;
- else
- lto_register_user_option (opt_index, arg, value, CL_TARGET);
- }
+/* Handle a back-end option; arguments and return value as for
+ handle_option. */
- done:
- if (dup)
- free (dup);
- return result;
+static bool
+target_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,
+ const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED)
+{
+ gcc_assert (opts == &global_options);
+ gcc_assert (opts_set == &global_options_set);
+ gcc_assert (decoded->canonical_option_num_elements <= 2);
+ gcc_assert (kind == DK_UNSPECIFIED);
+ return targetm.handle_option (decoded->opt_index, decoded->arg,
+ decoded->value);
}
/* Handle FILENAME from the command line. */
char *s;
name = lang_hooks.decl_printable_name (fndecl, 0);
- for (i = 0;
- VEC_iterate (char_p, flag_instrument_functions_exclude_functions,
- i, s);
- ++i)
- {
- if (strstr (name, s) != NULL)
- return true;
- }
+ FOR_EACH_VEC_ELT (char_p, flag_instrument_functions_exclude_functions,
+ i, s)
+ if (strstr (name, s) != NULL)
+ return true;
}
if (VEC_length (char_p, flag_instrument_functions_exclude_files) > 0)
char *s;
name = DECL_SOURCE_FILE (fndecl);
- for (i = 0;
- VEC_iterate (char_p, flag_instrument_functions_exclude_files, i, s);
- ++i)
- {
- if (strstr (name, s) != NULL)
- return true;
- }
+ FOR_EACH_VEC_ELT (char_p, flag_instrument_functions_exclude_files, i, s)
+ if (strstr (name, s) != NULL)
+ return true;
}
return false;
}
-/* Decode and handle the vector of command line options. LANG_MASK
- contains has a single bit set representing the current
- language. */
+/* Handle the vector of command line options, storing the results of
+ processing DECODED_OPTIONS and DECODED_OPTIONS_COUNT in OPTS and
+ OPTS_SET. LANG_MASK contains has a single bit set representing the
+ current language. HANDLERS describes what functions to call for
+ the options. */
static void
-handle_options (unsigned int argc, const char **argv, unsigned int lang_mask)
+read_cmdline_options (struct gcc_options *opts, struct gcc_options *opts_set,
+ struct cl_decoded_option *decoded_options,
+ unsigned int decoded_options_count,
+ unsigned int lang_mask,
+ const struct cl_option_handlers *handlers)
{
- unsigned int n, i;
+ unsigned int i;
- for (i = 1; i < argc; i += n)
+ for (i = 1; i < decoded_options_count; i++)
{
- const char *opt = argv[i];
-
- /* Interpret "-" or a non-switch as a file name. */
- if (opt[0] != '-' || opt[1] == '\0')
+ 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 (main_input_filename == NULL)
{
- main_input_filename = opt;
+ main_input_filename = decoded_options[i].arg;
main_input_baselength
= base_of_path (main_input_filename, &main_input_basename);
}
- add_input_filename (opt);
- n = 1;
+ add_input_filename (decoded_options[i].arg);
continue;
}
- n = handle_option (argv + i, lang_mask);
-
- if (!n)
- {
- n = 1;
- error ("unrecognized command line option \"%s\"", opt);
- }
+ read_cmdline_option (opts, opts_set,
+ decoded_options + i, lang_mask, handlers,
+ global_dc);
}
}
-/* Parse command line options and set default flag values. Do minimal
- options processing. */
+/* Language mask determined at initialization. */
+static unsigned int initial_lang_mask;
+
+/* Initialize global options-related settings at start-up. */
+
void
-decode_options (unsigned int argc, const char **argv)
+init_options_once (void)
{
- static bool first_time_p = true;
- static int initial_min_crossjump_insns;
- static int initial_max_fields_for_field_sensitive;
- static int initial_loop_invariant_max_bbs_in_loop;
- static unsigned int initial_lang_mask;
+ /* Perform language-specific options initialization. */
+ initial_lang_mask = lang_hooks.option_lang_mask ();
+
+ lang_hooks.initialize_diagnostics (global_dc);
+}
+
+/* Initialize OPTS and OPTS_SET before using them in parsing options. */
+
+void
+init_options_struct (struct gcc_options *opts, struct gcc_options *opts_set)
+{
+ size_t num_params = get_num_compiler_params ();
+
+ *opts = global_options_init;
+ memset (opts_set, 0, sizeof (*opts_set));
- unsigned int i, lang_mask;
+ opts->x_param_values = XNEWVEC (int, num_params);
+ opts_set->x_param_values = XCNEWVEC (int, num_params);
+ init_param_values (opts->x_param_values);
+
+ /* Use priority coloring if cover classes is not defined for the
+ target. */
+ if (targetm.ira_cover_classes == NULL)
+ opts->x_flag_ira_algorithm = IRA_ALGORITHM_PRIORITY;
+
+ /* Initialize whether `char' is signed. */
+ opts->x_flag_signed_char = DEFAULT_SIGNED_CHAR;
+ /* Set this to a special "uninitialized" value. The actual default
+ is set after target options have been processed. */
+ opts->x_flag_short_enums = 2;
+
+ /* Initialize target_flags before targetm.target_option.optimization
+ so the latter can modify it. */
+ opts->x_target_flags = targetm.default_target_flags;
+
+ /* Some targets have ABI-specified unwind tables. */
+ opts->x_flag_unwind_tables = targetm.unwind_tables_default;
+
+ /* Some targets have other target-specific initialization. */
+ targetm.target_option.init_struct (opts);
+}
+
+/* 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);
+}
+
+/* Default the options in OPTS and OPTS_SET based on the optimization
+ settings in DECODED_OPTIONS and DECODED_OPTIONS_COUNT. */
+static void
+default_options_optimization (struct gcc_options *opts,
+ struct gcc_options *opts_set,
+ struct cl_decoded_option *decoded_options,
+ unsigned int decoded_options_count)
+{
+ unsigned int i;
int opt1;
int opt2;
int opt3;
int opt1_max;
+ int ofast = 0;
- 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;
+ gcc_assert (opts == &global_options);
+ gcc_assert (opts_set = &global_options_set);
/* 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;
- optimize_size = 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))
+ case OPT_O:
+ if (*opt->arg == '\0')
{
- optimize_size = 1;
-
- /* Optimizing for size forces optimize to be 2. */
- optimize = 2;
+ optimize = 1;
+ optimize_size = 0;
+ ofast = 0;
}
else
{
- const int optimize_val = read_integral_parameter (p, p - 2, -1);
- if (optimize_val != -1)
+ const int optimize_val = integral_argument (opt->arg);
+ if (optimize_val == -1)
+ error ("argument to %qs should be a non-negative integer",
+ "-O");
+ else
{
optimize = optimize_val;
+ if ((unsigned int) optimize > 255)
+ optimize = 255;
optimize_size = 0;
+ ofast = 0;
}
}
+ break;
+
+ case OPT_Os:
+ optimize_size = 1;
+
+ /* Optimizing for size forces optimize to be 2. */
+ optimize = 2;
+ ofast = 0;
+ break;
+
+ case OPT_Ofast:
+ /* -Ofast only adds flags to -O3. */
+ optimize_size = 0;
+ optimize = 3;
+ ofast = 1;
+ break;
+
+ default:
+ /* Ignore other options in this prescan. */
+ break;
}
}
-
- /* Use priority coloring if cover classes is not defined for the
- target. */
- if (targetm.ira_cover_classes == NULL)
- flag_ira_algorithm = IRA_ALGORITHM_PRIORITY;
/* -O1 optimizations. */
opt1 = (optimize >= 1);
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_bit_ccp = opt1;
flag_tree_dce = opt1;
flag_tree_dom = opt1;
flag_tree_dse = opt1;
flag_tree_copy_prop = opt1;
flag_tree_sink = opt1;
flag_tree_ch = opt1;
+ flag_combine_stack_adjustments = opt1;
/* -O2 optimizations. */
opt2 = (optimize >= 2);
flag_inline_small_functions = opt2;
flag_indirect_inlining = opt2;
+ flag_partial_inlining = opt2;
flag_thread_jumps = opt2;
flag_crossjumping = opt2;
flag_optimize_sibling_calls = opt2;
flag_caller_saves = opt2;
flag_peephole2 = opt2;
#ifdef INSN_SCHEDULING
- flag_schedule_insns = opt2;
+ /* 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_tree_vrp = opt2;
flag_tree_builtin_call_dce = opt2;
flag_tree_pre = opt2;
- flag_tree_switch_conversion = 1;
+ 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",
- (opt2) ? 100 : initial_max_fields_for_field_sensitive);
+ maybe_set_param_value
+ (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",
- (opt2) ? initial_loop_invariant_max_bbs_in_loop : 1000);
+ maybe_set_param_value
+ (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP,
+ opt2 ? default_param_value (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP) : 1000,
+ opts->x_param_values, opts_set->x_param_values);
/* -O3 optimizations. */
opt3 = (optimize >= 3);
+ flag_tree_loop_distribute_patterns = opt3;
flag_predictive_commoning = opt3;
flag_inline_functions = opt3;
flag_unswitch_loops = opt3;
optimize = 2;
/* We want to crossjump as much as possible. */
- set_param_value ("min-crossjump-insns", 1);
+ maybe_set_param_value (PARAM_MIN_CROSSJUMP_INSNS, 1,
+ opts->x_param_values, opts_set->x_param_values);
}
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),
+ opts->x_param_values, opts_set->x_param_values);
- if (first_time_p)
+ /* -Ofast adds optimizations to -O3. */
+ if (ofast)
{
- /* 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;
+ /* Which is -ffast-math for now. */
+ set_fast_math_flags (1);
+ /* Allow targets to enable extra options with -Ofast
+ before general options processing so disabling them
+ again afterwards works. */
+ targetm.handle_ofast ();
}
+ /* Allow default optimizations to be specified on a per-machine basis. */
+ targetm.target_option.optimization (optimize, optimize_size);
+}
+
+static void finish_options (struct gcc_options *, struct gcc_options *);
+
+/* Parse command line options and set default flag values. Do minimal
+ options processing. The decoded options are in *DECODED_OPTIONS
+ and *DECODED_OPTIONS_COUNT. */
+void
+decode_options (struct gcc_options *opts, struct gcc_options *opts_set,
+ struct cl_decoded_option *decoded_options,
+ unsigned int decoded_options_count)
+{
+ struct cl_option_handlers handlers;
+
+ unsigned int lang_mask;
+
+ lang_mask = initial_lang_mask;
+
+ handlers.unknown_option_callback = unknown_option_callback;
+ handlers.wrong_lang_callback = complain_wrong_lang;
+ handlers.post_handling_callback = post_handling_callback;
+ handlers.num_handlers = 3;
+ handlers.handlers[0].handler = lang_handle_option;
+ handlers.handlers[0].mask = 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;
+
+ /* Enable -Werror=coverage-mismatch by default */
+ enable_warning_as_error ("coverage-mismatch", 1, lang_mask, &handlers,
+ global_dc);
+
+ default_options_optimization (opts, opts_set,
+ decoded_options, decoded_options_count);
+
+#ifdef ENABLE_LTO
/* Clear any options currently held for LTO. */
lto_clear_user_options ();
-
-#ifdef OPTIMIZATION_OPTIONS
- /* Allow default optimizations to be specified on a per-machine basis. */
- OPTIMIZATION_OPTIONS (optimize, optimize_size);
#endif
- handle_options (argc, argv, lang_mask);
+ read_cmdline_options (opts, opts_set,
+ decoded_options, decoded_options_count, lang_mask,
+ &handlers);
- /* Make DUMP_BASE_NAME relative to the AUX_BASE_NAME directory,
- typically the directory to contain the object file. */
- if (aux_base_name && ! IS_ABSOLUTE_PATH (dump_base_name))
- {
- const char *aux_base;
+ finish_options (opts, opts_set);
+}
+
+/* After all options have been read into OPTS and OPTS_SET, finalize
+ settings of those options and diagnose incompatible
+ combinations. */
+static void
+finish_options (struct gcc_options *opts, struct gcc_options *opts_set)
+{
+ static bool first_time_p = true;
+ enum unwind_info_type ui_except;
+
+ gcc_assert (opts == &global_options);
+ gcc_assert (opts_set = &global_options_set);
- base_of_path (aux_base_name, &aux_base);
- if (aux_base_name != aux_base)
+ if (dump_base_name && ! IS_ABSOLUTE_PATH (dump_base_name))
+ {
+ /* First try to make DUMP_BASE_NAME relative to the DUMP_DIR_NAME
+ directory. Then try to make DUMP_BASE_NAME relative to the
+ AUX_BASE_NAME directory, typically the directory to contain
+ the object file. */
+ if (dump_dir_name)
+ dump_base_name = concat (dump_dir_name, dump_base_name, NULL);
+ else if (aux_base_name)
{
- int dir_len = aux_base - aux_base_name;
- char *new_dump_base_name =
- XNEWVEC (char, strlen(dump_base_name) + dir_len + 1);
-
- /* Copy directory component from AUX_BASE_NAME. */
- memcpy (new_dump_base_name, aux_base_name, dir_len);
- /* Append existing DUMP_BASE_NAME. */
- strcpy (new_dump_base_name + dir_len, dump_base_name);
- dump_base_name = new_dump_base_name;
+ const char *aux_base;
+
+ base_of_path (aux_base_name, &aux_base);
+ if (aux_base_name != aux_base)
+ {
+ int dir_len = aux_base - aux_base_name;
+ char *new_dump_base_name =
+ XNEWVEC (char, strlen(dump_base_name) + dir_len + 1);
+
+ /* Copy directory component from AUX_BASE_NAME. */
+ memcpy (new_dump_base_name, aux_base_name, dir_len);
+ /* Append existing DUMP_BASE_NAME. */
+ strcpy (new_dump_base_name + dir_len, dump_base_name);
+ dump_base_name = new_dump_base_name;
+ }
}
}
section-anchors. */
if (!flag_unit_at_a_time)
{
- if (flag_section_anchors == 1)
+ if (flag_section_anchors && opts_set->x_flag_section_anchors)
error ("Section anchors must be disabled when unit-at-a-time "
"is disabled.");
flag_section_anchors = 0;
"is disabled.");
flag_toplevel_reorder = 0;
}
+
+ /* -Wmissing-noreturn is alias for -Wsuggest-attribute=noreturn. */
+ if (warn_missing_noreturn)
+ 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 (!optimize
+ && flag_toplevel_reorder == 2
+ && !(flag_section_anchors && opts_set->x_flag_section_anchors))
{
flag_toplevel_reorder = 0;
flag_section_anchors = 0;
}
if (!flag_toplevel_reorder)
{
- if (flag_section_anchors == 1)
+ if (flag_section_anchors && opts_set->x_flag_section_anchors)
error ("section anchors must be disabled when toplevel reorder"
" is disabled");
flag_section_anchors = 0;
flag_pic = flag_pie;
if (flag_pic && !flag_pie)
flag_shlib = 1;
+ first_time_p = false;
}
if (optimize == 0)
generating unwind info. If flag_exceptions is turned on we need to
turn off the partitioning optimization. */
- if (flag_exceptions && flag_reorder_blocks_and_partition
- && (USING_SJLJ_EXCEPTIONS
-#ifdef TARGET_UNWIND_INFO
- || 1
-#endif
- ))
+ ui_except = targetm.except_unwind_info ();
+
+ if (flag_exceptions
+ && flag_reorder_blocks_and_partition
+ && (ui_except == UI_SJLJ || ui_except == UI_TARGET))
{
- inform (input_location,
- "-freorder-blocks-and-partition does not work with exceptions on this architecture");
+ inform (input_location,
+ "-freorder-blocks-and-partition does not work "
+ "with exceptions on this architecture");
flag_reorder_blocks_and_partition = 0;
flag_reorder_blocks = 1;
}
/* If user requested unwind info, then turn off the partitioning
optimization. */
- if (flag_unwind_tables && ! targetm.unwind_tables_default
+ if (flag_unwind_tables
+ && !targetm.unwind_tables_default
&& flag_reorder_blocks_and_partition
- && (USING_SJLJ_EXCEPTIONS
-#ifdef TARGET_UNWIND_INFO
- || 1
-#endif
- ))
+ && (ui_except == UI_SJLJ || ui_except == UI_TARGET))
{
inform (input_location,
- "-freorder-blocks-and-partition does not support unwind info on this architecture");
+ "-freorder-blocks-and-partition does not support "
+ "unwind info on this architecture");
flag_reorder_blocks_and_partition = 0;
flag_reorder_blocks = 1;
}
if (flag_reorder_blocks_and_partition
&& (!targetm.have_named_sections
- || (flag_unwind_tables && targetm.unwind_tables_default
- && (USING_SJLJ_EXCEPTIONS
-#ifdef TARGET_UNWIND_INFO
- || 1
-#endif
- ))))
+ || (flag_unwind_tables
+ && targetm.unwind_tables_default
+ && (ui_except == UI_SJLJ || ui_except == UI_TARGET))))
{
inform (input_location,
- "-freorder-blocks-and-partition does not work on this architecture");
+ "-freorder-blocks-and-partition does not work "
+ "on this architecture");
flag_reorder_blocks_and_partition = 0;
flag_reorder_blocks = 1;
}
flag_ira_algorithm = IRA_ALGORITHM_PRIORITY;
}
- /* Save the current optimization options if this is the first call. */
- if (first_time_p)
+ if (flag_conserve_stack)
{
- optimization_default_node = build_optimization_node ();
- optimization_current_node = optimization_default_node;
- first_time_p = false;
+ maybe_set_param_value (PARAM_LARGE_STACK_FRAME, 100,
+ opts->x_param_values, opts_set->x_param_values);
+ maybe_set_param_value (PARAM_STACK_FRAME_GROWTH, 40,
+ opts->x_param_values, opts_set->x_param_values);
}
- if (flag_conserve_stack)
+ if (flag_wpa || flag_ltrans)
+ {
+ /* These passes are not WHOPR compatible yet. */
+ flag_ipa_pta = 0;
+ flag_ipa_struct_reorg = 0;
+ }
+
+ if (flag_lto || flag_whopr)
+ {
+#ifdef ENABLE_LTO
+ 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;
+#else
+ error ("LTO support has not been enabled in this configuration");
+#endif
+ }
+ if (flag_lto_partition_balanced || flag_lto_partition_1to1)
{
- if (!PARAM_SET_P (PARAM_LARGE_STACK_FRAME))
- PARAM_VALUE (PARAM_LARGE_STACK_FRAME) = 100;
- if (!PARAM_SET_P (PARAM_STACK_FRAME_GROWTH))
- PARAM_VALUE (PARAM_STACK_FRAME_GROWTH) = 40;
+ if (flag_lto_partition_balanced && flag_lto_partition_1to1)
+ error ("Only one -flto-partitoin value can be specified");
+ if (!flag_whopr)
+ error ("-flto-partitoin has effect only with -fwhopr");
}
+ /* Reconcile -flto and -fwhopr. Set additional flags as appropriate and
+ check option consistency. */
+ if (flag_lto && flag_whopr)
+ error ("-flto and -fwhopr are mutually exclusive");
+
+ /* We initialize flag_split_stack to -1 so that targets can set a
+ default value if they choose based on other options. */
+ if (flag_split_stack == -1)
+ flag_split_stack = 0;
+ else if (flag_split_stack)
+ {
+ if (!targetm.supports_split_stack (true))
+ {
+ error ("%<-fsplit-stack%> is not supported by "
+ "this compiler configuration");
+ flag_split_stack = 0;
+ }
+ }
}
#define LEFT_COLUMN 27
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])
with an option to be an indication of its current setting. */
if (!quiet_flag)
{
+ void *flag_var = option_flag_var (i, &global_options);
+
if (len < (LEFT_COLUMN + 2))
strcpy (new_help, "\t\t");
else
strcpy (new_help, "\t");
- if (option->flag_var != NULL)
+ if (flag_var != NULL)
{
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
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, &global_options)
? _("[enabled]") : _("[disabled]"));
}
printf (_(" None found. Use --help=%s to show *all* the options supported by the %s front-end\n"),
lang_names[i], lang_names[i]);
}
-
+
}
else if (! displayed)
printf (_(" All options with the desired characteristics have already been displayed\n"));
switch (flag & include_flags)
{
case 0:
+ case CL_DRIVER:
break;
case CL_TARGET:
/* 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. */
-
-static int
-common_handle_option (size_t scode, const char *arg, int value,
- unsigned int lang_mask)
+ DECODED->value assigned to a variable, it happens automatically. */
+
+static bool
+common_handle_option (struct gcc_options *opts,
+ struct gcc_options *opts_set,
+ const struct cl_decoded_option *decoded,
+ unsigned int lang_mask, int kind ATTRIBUTE_UNUSED,
+ const struct cl_option_handlers *handlers)
{
+ size_t scode = decoded->opt_index;
+ const char *arg = decoded->arg;
+ int value = decoded->value;
static bool verbose = false;
enum opt_code code = (enum opt_code) scode;
+ gcc_assert (opts == &global_options);
+ gcc_assert (opts_set == &global_options_set);
+ gcc_assert (decoded->canonical_option_num_elements <= 2);
+
switch (code)
{
case OPT__param:
- handle_param (arg);
+ handle_param (opts, opts_set, arg);
break;
case OPT_v:
verbose = true;
break;
- case OPT_fhelp:
case OPT__help:
{
unsigned int all_langs_mask = (1U << cl_lang_count) - 1;
print_specific_help (0, undoc_mask, all_langs_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)
+ print_specific_help (i, undoc_mask, 0);
exit_after_options = true;
break;
}
- case OPT_ftarget_help:
case OPT__target_help:
print_specific_help (CL_TARGET, CL_UNDOCUMENTED, 0);
exit_after_options = true;
/* Allow the target a chance to give the user some additional information. */
- if (targetm.target_help)
- targetm.target_help ();
+ if (targetm.help)
+ targetm.help ();
break;
- case OPT_fhelp_:
case OPT__help_:
{
const char * a = arg;
break;
}
- case OPT_fversion:
case OPT__version:
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, global_dc);
break;
case OPT_Wlarger_than_:
- /* This form corresponds to -Wlarger-than-.
- Kept for backward compatibility.
- Don't use it as the first argument of warning(). */
-
- case OPT_Wlarger_than_eq:
larger_than_size = value;
warn_larger_than = value != -1;
break;
+ case OPT_Wfatal_errors:
+ global_dc->fatal_errors = value;
+ break;
+
case OPT_Wframe_larger_than_:
frame_larger_than_size = value;
warn_frame_larger_than = value != -1;
warn_strict_overflow = value;
break;
+ case OPT_Wsystem_headers:
+ global_dc->dc_warn_system_headers = value;
+ break;
+
case OPT_Wunused:
warn_unused = value;
break;
case OPT_aux_info:
- case OPT_aux_info_:
aux_info_file_name = arg;
flag_gen_aux_info = 1;
break;
dump_base_name = arg;
break;
+ case OPT_dumpdir:
+ dump_dir_name = arg;
+ break;
+
case OPT_falign_functions_:
align_functions = value;
break;
align_loops = value;
break;
- case OPT_fbranch_probabilities:
- flag_branch_probabilities_set = true;
- break;
-
case OPT_fcall_used_:
fix_register (arg, 0, 1);
break;
fix_register (arg, 0, 0);
break;
+ case OPT_fcompare_debug_second:
+ flag_compare_debug = value;
+ break;
+
case OPT_fdbg_cnt_:
dbg_cnt_process_opt (arg);
break;
diagnostic_prefixing_rule (global_dc)
= DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE;
else
- return 0;
+ return false;
break;
case OPT_fdiagnostics_show_option:
- global_dc->show_option_requested = true;
+ global_dc->show_option_requested = value;
break;
case OPT_fdump_:
if (!dump_switch_p (arg))
- return 0;
+ return false;
break;
case OPT_fexcess_precision_:
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-auto", 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,
+ opts->x_param_values, opts_set->x_param_values);
break;
case OPT_finstrument_functions_exclude_function_list_:
}
break;
- case OPT_fpeel_loops:
- flag_peel_loops_set = true;
- break;
-
case OPT_fplugin_:
#ifdef ENABLE_PLUGIN
add_new_plugin (arg);
#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;
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;
- if (!flag_profile_values_set)
+ if (!opts_set->x_flag_profile_values)
flag_profile_values = value;
- if (!flag_unroll_loops_set)
+ if (!opts_set->x_flag_unroll_loops)
flag_unroll_loops = value;
- if (!flag_peel_loops_set)
+ if (!opts_set->x_flag_peel_loops)
flag_peel_loops = value;
- if (!flag_tracer_set)
+ if (!opts_set->x_flag_tracer)
flag_tracer = value;
- if (!flag_value_profile_transformations_set)
+ if (!opts_set->x_flag_value_profile_transformations)
flag_value_profile_transformations = value;
- if (!flag_inline_functions_set)
+ if (!opts_set->x_flag_inline_functions)
flag_inline_functions = value;
- if (!flag_ipa_cp_set)
+ if (!opts_set->x_flag_ipa_cp)
flag_ipa_cp = value;
- if (!flag_ipa_cp_clone_set
+ if (!opts_set->x_flag_ipa_cp_clone
&& value && flag_ipa_cp)
flag_ipa_cp_clone = value;
- if (!flag_predictive_commoning_set)
+ if (!opts_set->x_flag_predictive_commoning)
flag_predictive_commoning = value;
- if (!flag_unswitch_loops_set)
+ if (!opts_set->x_flag_unswitch_loops)
flag_unswitch_loops = value;
- if (!flag_gcse_after_reload_set)
+ if (!opts_set->x_flag_gcse_after_reload)
flag_gcse_after_reload = value;
break;
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;
- if (!flag_profile_values_set)
+ if (!opts_set->x_flag_profile_values)
flag_profile_values = value;
- if (!flag_value_profile_transformations_set)
+ if (!opts_set->x_flag_value_profile_transformations)
flag_value_profile_transformations = value;
- if (!flag_inline_functions_set)
+ if (!opts_set->x_flag_inline_functions)
flag_inline_functions = value;
break;
- case OPT_fprofile_values:
- flag_profile_values_set = true;
+ case OPT_fshow_column:
+ global_dc->show_column = value;
break;
case OPT_fvisibility_:
}
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);
break;
set_random_seed (arg);
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);
break;
#else
- return 0;
+ return false;
#endif
case OPT_fsched_stalled_insns_:
warning (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;
break;
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);
break;
case OPT_pedantic_errors:
flag_pedantic_errors = pedantic = 1;
+ global_dc->pedantic_errors = 1;
+ break;
+
+ case OPT_fwhopr_:
+ flag_whopr = arg;
break;
- case OPT_fsee:
- case OPT_fcse_skip_blocks:
- case OPT_floop_optimize:
- case OPT_frerun_loop_opt:
- case OPT_fstrength_reduce:
- case OPT_ftree_store_copy_prop:
- case OPT_fforce_addr:
- case OPT_ftree_salias:
- case OPT_ftree_store_ccp:
- /* These are no-ops, preserved for backward compatibility. */
+ case OPT_fwhopr:
+ flag_whopr = "";
+ break;
+
+ case OPT_w:
+ global_dc->dc_inhibit_warnings = true;
+ 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,
+ const char *carg)
{
char *equal, *arg;
int value;
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,
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,
/* 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)
{
flag_unsafe_math_optimizations = set;
}
}
-/* When -funsafe-math-optimizations is set the following
- flags are set as well. */
-void
+/* When -funsafe-math-optimizations is set the following
+ flags are set as well. */
+static void
set_unsafe_math_optimizations_flags (int set)
{
flag_trapping_math = !set;
bool
fast_math_flags_struct_set_p (struct cl_optimization *opt)
{
- return (!opt->flag_trapping_math
- && opt->flag_unsafe_math_optimizations
- && opt->flag_finite_math_only
- && !opt->flag_signed_zeros
- && !opt->flag_errno_math);
+ return (!opt->x_flag_trapping_math
+ && opt->x_flag_unsafe_math_optimizations
+ && opt->x_flag_finite_math_only
+ && !opt->x_flag_signed_zeros
+ && !opt->x_flag_errno_math);
}
/* Handle a debug output -g switch. EXTENDED is true or false to support
}
}
-/* Return 1 if OPTION is enabled, 0 if it is disabled, or -1 if it isn't
- a simple on-off switch. */
+/* Return 1 if option OPT_IDX is enabled in OPTS, 0 if it is disabled,
+ or -1 if it isn't a simple on-off switch. */
int
-option_enabled (int opt_idx)
+option_enabled (int opt_idx, void *opts)
{
const struct cl_option *option = &(cl_options[opt_idx]);
+ struct gcc_options *optsg = (struct gcc_options *) opts;
+ void *flag_var = option_flag_var (opt_idx, optsg);
- if (option->flag_var)
+ if (flag_var)
switch (option->var_type)
{
case CLVC_BOOLEAN:
- return *(int *) option->flag_var != 0;
+ return *(int *) flag_var != 0;
case CLVC_EQUAL:
- return *(int *) option->flag_var == option->var_value;
+ return *(int *) flag_var == option->var_value;
case CLVC_BIT_CLEAR:
- return (*(int *) option->flag_var & option->var_value) == 0;
+ return (*(int *) flag_var & option->var_value) == 0;
case CLVC_BIT_SET:
- return (*(int *) option->flag_var & option->var_value) != 0;
+ return (*(int *) flag_var & option->var_value) != 0;
case CLVC_STRING:
break;
return -1;
}
-/* Fill STATE with the current state of option OPTION. Return true if
- there is some state to store. */
+/* Fill STATE with the current state of option OPTION in OPTS. Return
+ true if there is some state to store. */
bool
-get_option_state (int option, struct cl_option_state *state)
+get_option_state (struct gcc_options *opts, int option,
+ struct cl_option_state *state)
{
- if (cl_options[option].flag_var == 0)
+ void *flag_var = option_flag_var (option, opts);
+
+ if (flag_var == 0)
return false;
switch (cl_options[option].var_type)
{
case CLVC_BOOLEAN:
case CLVC_EQUAL:
- state->data = cl_options[option].flag_var;
+ state->data = flag_var;
state->size = sizeof (int);
break;
case CLVC_BIT_CLEAR:
case CLVC_BIT_SET:
- state->ch = option_enabled (option);
+ state->ch = option_enabled (option, opts);
state->data = &state->ch;
state->size = 1;
break;
case CLVC_STRING:
- state->data = *(const char **) cl_options[option].flag_var;
+ state->data = *(const char **) flag_var;
if (state->data == 0)
state->data = "";
state->size = strlen ((const char *) state->data) + 1;
return true;
}
-/* Set *OPTION according to VALUE and ARG. */
-
-void
-set_option (const struct cl_option *option, int value, const char *arg)
-{
- if (!option->flag_var)
- return;
-
- switch (option->var_type)
- {
- case CLVC_BOOLEAN:
- *(int *) option->flag_var = value;
- break;
+/* Callback function, called when -Werror= enables a warning. */
- case CLVC_EQUAL:
- *(int *) option->flag_var = (value
- ? option->var_value
- : !option->var_value);
- break;
+static void (*warning_as_error_callback) (int) = NULL;
- 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;
+/* Register a callback for enable_warning_as_error calls. */
- case CLVC_STRING:
- *(const char **) option->flag_var = arg;
- break;
- }
+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. */
+/* Enable (or disable if VALUE is 0) a warning option ARG (language
+ mask LANG_MASK, option handlers HANDLERS) as an error for
+ diagnostic context DC (possibly NULL). This is used by
+ -Werror=. */
void
-enable_warning_as_error (const char *arg, int value, unsigned int lang_mask)
+enable_warning_as_error (const char *arg, int value, unsigned int lang_mask,
+ const struct cl_option_handlers *handlers,
+ diagnostic_context *dc)
{
char *new_option;
int option_index;
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);
}
else
{
- diagnostic_t kind = value ? DK_ERROR : DK_WARNING;
- diagnostic_classify_diagnostic (global_dc, option_index, kind);
-
- /* -Werror=foo implies -Wfoo. */
- if (cl_options[option_index].var_type == CLVC_BOOLEAN
- && cl_options[option_index].flag_var
- && kind == DK_ERROR)
- *(int *) cl_options[option_index].flag_var = 1;
+ const struct cl_option *option = &cl_options[option_index];
+ const diagnostic_t kind = value ? DK_ERROR : DK_WARNING;
+
+ if (option->alias_target != N_OPTS)
+ option_index = option->alias_target;
+ if (option_index == OPT_SPECIAL_ignore)
+ return;
+ if (dc)
+ diagnostic_classify_diagnostic (dc, option_index, kind,
+ UNKNOWN_LOCATION);
+ if (kind == DK_ERROR)
+ {
+ const struct cl_option * const option = cl_options + option_index;
+
+ /* -Werror=foo implies -Wfoo. */
+ if (option->var_type == CLVC_BOOLEAN)
+ handle_generated_option (&global_options, &global_options_set,
+ option_index, NULL, value, lang_mask,
+ (int)kind, handlers,
+ dc);
+
+ 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;
+}
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