/* Command line option handling.
- Copyright (C) 2002-2013 Free Software Foundation, Inc.
+ Copyright (C) 2002-2014 Free Software Foundation, Inc.
Contributed by Neil Booth.
This file is part of GCC.
{ 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_NOT_DEBUG, OPT_fif_conversion, NULL, 1 },
+ { OPT_LEVELS_1_PLUS_NOT_DEBUG, 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_fshrink_wrap, 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_NOT_DEBUG, 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_fcombine_stack_adjustments, NULL, 1 },
{ OPT_LEVELS_1_PLUS, OPT_fcompare_elim, NULL, 1 },
{ OPT_LEVELS_1_PLUS, OPT_ftree_slsr, NULL, 1 },
+ { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fbranch_count_reg, NULL, 1 },
+ { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fmove_loop_invariants, NULL, 1 },
+ { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_pta, NULL, 1 },
+ { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fssa_phiopt, NULL, 1 },
/* -O2 optimizations. */
{ OPT_LEVELS_2_PLUS, OPT_finline_small_functions, NULL, 1 },
{ OPT_LEVELS_2_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_CHEAP },
{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_foptimize_strlen, NULL, 1 },
{ OPT_LEVELS_2_PLUS, OPT_fhoist_adjacent_loads, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fisolate_erroneous_paths, NULL, 1 },
+ { OPT_LEVELS_2_PLUS, OPT_fipa_icf, NULL, 1 },
+ { OPT_LEVELS_2_PLUS, OPT_fisolate_erroneous_paths_dereference, NULL, 1 },
+ { OPT_LEVELS_2_PLUS, OPT_fuse_caller_save, NULL, 1 },
+ { OPT_LEVELS_2_PLUS, OPT_flra_remat, NULL, 1 },
/* -O3 optimizations. */
{ OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribute_patterns, NULL, 1 },
opt2 ? default_param_value (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP) : 1000,
opts->x_param_values, opts_set->x_param_values);
+ /* At -Ofast, allow store motion to introduce potential race conditions. */
+ maybe_set_param_value
+ (PARAM_ALLOW_STORE_DATA_RACES,
+ opts->x_optimize_fast ? 1
+ : default_param_value (PARAM_ALLOW_STORE_DATA_RACES),
+ opts->x_param_values, opts_set->x_param_values);
+
if (opts->x_optimize_size)
/* We want to crossjump as much as possible. */
maybe_set_param_value (PARAM_MIN_CROSSJUMP_INSNS, 1,
default_param_value (PARAM_MIN_CROSSJUMP_INSNS),
opts->x_param_values, opts_set->x_param_values);
+ /* Restrict the amount of work combine does at -Og while retaining
+ most of its useful transforms. */
+ if (opts->x_optimize_debug)
+ maybe_set_param_value (PARAM_MAX_COMBINE_INSNS, 2,
+ opts->x_param_values, opts_set->x_param_values);
+
/* Allow default optimizations to be specified on a per-machine basis. */
maybe_default_options (opts, opts_set,
targetm_common.option_optimization_table,
{
enum unwind_info_type ui_except;
- if (opts->x_dump_base_name && ! IS_ABSOLUTE_PATH (opts->x_dump_base_name))
+ if (opts->x_dump_base_name
+ && ! IS_ABSOLUTE_PATH (opts->x_dump_base_name)
+ && ! opts->x_dump_base_name_prefixed)
{
/* 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 = new_dump_base_name;
}
}
+ opts->x_dump_base_name_prefixed = true;
}
/* Handle related options for unit-at-a-time, toplevel-reorder, and
#else
error_at (loc, "LTO support has not been enabled in this configuration");
#endif
- if (!opts->x_flag_fat_lto_objects && !HAVE_LTO_PLUGIN)
- error_at (loc, "-fno-fat-lto-objects are supported only with linker plugin.");
-}
- if ((opts->x_flag_lto_partition_balanced != 0) + (opts->x_flag_lto_partition_1to1 != 0)
- + (opts->x_flag_lto_partition_none != 0) >= 1)
- {
- if ((opts->x_flag_lto_partition_balanced != 0)
- + (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");
+ if (!opts->x_flag_fat_lto_objects
+ && (!HAVE_LTO_PLUGIN
+ || (opts_set->x_flag_use_linker_plugin
+ && !opts->x_flag_use_linker_plugin)))
+ {
+ if (opts_set->x_flag_fat_lto_objects)
+ error_at (loc, "-fno-fat-lto-objects are supported only with linker plugin");
+ opts->x_flag_fat_lto_objects = 1;
+ }
}
/* We initialize opts->x_flag_split_stack to -1 so that targets can set a
maybe_set_param_value (PARAM_MAX_STORES_TO_SINK, 0,
opts->x_param_values, opts_set->x_param_values);
- /* The -gsplit-dwarf option requires -gpubnames. */
+ /* The -gsplit-dwarf option requires -ggnu-pubnames. */
if (opts->x_dwarf_split_debug_info)
- opts->x_debug_generate_pub_sections = 1;
+ opts->x_debug_generate_pub_sections = 2;
+
+ /* Userspace and kernel ASan conflict with each other. */
+
+ if ((opts->x_flag_sanitize & SANITIZE_USER_ADDRESS)
+ && (opts->x_flag_sanitize & SANITIZE_KERNEL_ADDRESS))
+ error_at (loc,
+ "-fsanitize=address is incompatible with "
+ "-fsanitize=kernel-address");
+
+ /* And with TSan. */
+
+ if ((opts->x_flag_sanitize & SANITIZE_ADDRESS)
+ && (opts->x_flag_sanitize & SANITIZE_THREAD))
+ error_at (loc,
+ "-fsanitize=address and -fsanitize=kernel-address "
+ "are incompatible with -fsanitize=thread");
+
+ /* Error recovery is not allowed for ASan and TSan. */
+
+ if (opts->x_flag_sanitize_recover & SANITIZE_USER_ADDRESS)
+ error_at (loc, "-fsanitize-recover=address is not supported");
+
+ if (opts->x_flag_sanitize_recover & SANITIZE_THREAD)
+ error_at (loc, "-fsanitize-recover=thread is not supported");
+
+ if (opts->x_flag_sanitize_recover & SANITIZE_LEAK)
+ error_at (loc, "-fsanitize-recover=leak is not supported");
+
+ /* When instrumenting the pointers, we don't want to remove
+ the null pointer checks. */
+ if (opts->x_flag_sanitize & (SANITIZE_NULL | SANITIZE_NONNULL_ATTRIBUTE
+ | SANITIZE_RETURNS_NONNULL_ATTRIBUTE))
+ opts->x_flag_delete_null_pointer_checks = 0;
+
+ /* Aggressive compiler optimizations may cause false negatives. */
+ if (opts->x_flag_sanitize)
+ {
+ opts->x_flag_aggressive_loop_optimizations = 0;
+ opts->x_flag_strict_overflow = 0;
+ }
}
#define LEFT_COLUMN 27
const char *help;
bool found = false;
bool displayed = false;
+ char new_help[128];
if (include_flags == CL_PARAMS)
{
/* Get the translation. */
help = _(help);
+ if (!opts->x_quiet_flag)
+ {
+ snprintf (new_help, sizeof (new_help),
+ _("default %d minimum %d maximum %d"),
+ compiler_params[i].default_value,
+ compiler_params[i].min_value,
+ compiler_params[i].max_value);
+ help = new_help;
+ }
wrap_help (help, param, strlen (param), columns);
}
putchar ('\n');
for (i = 0; i < cl_options_count; i++)
{
- char new_help[128];
const struct cl_option *option = cl_options + i;
unsigned int len;
const char *opt;
opts->x_help_columns, opts, lang_mask);
}
+/* Enable FDO-related flags. */
+
+static void
+enable_fdo_optimizations (struct gcc_options *opts,
+ struct gcc_options *opts_set,
+ int value)
+{
+ if (!opts_set->x_flag_branch_probabilities)
+ opts->x_flag_branch_probabilities = value;
+ if (!opts_set->x_flag_profile_values)
+ opts->x_flag_profile_values = value;
+ if (!opts_set->x_flag_unroll_loops)
+ opts->x_flag_unroll_loops = value;
+ if (!opts_set->x_flag_peel_loops)
+ opts->x_flag_peel_loops = value;
+ if (!opts_set->x_flag_tracer)
+ opts->x_flag_tracer = value;
+ if (!opts_set->x_flag_value_profile_transformations)
+ opts->x_flag_value_profile_transformations = value;
+ if (!opts_set->x_flag_inline_functions)
+ opts->x_flag_inline_functions = value;
+ if (!opts_set->x_flag_ipa_cp)
+ opts->x_flag_ipa_cp = value;
+ if (!opts_set->x_flag_ipa_cp_clone
+ && value && opts->x_flag_ipa_cp)
+ opts->x_flag_ipa_cp_clone = value;
+ if (!opts_set->x_flag_predictive_commoning)
+ opts->x_flag_predictive_commoning = value;
+ if (!opts_set->x_flag_unswitch_loops)
+ opts->x_flag_unswitch_loops = value;
+ if (!opts_set->x_flag_gcse_after_reload)
+ opts->x_flag_gcse_after_reload = value;
+ if (!opts_set->x_flag_tree_loop_vectorize
+ && !opts_set->x_flag_tree_vectorize)
+ opts->x_flag_tree_loop_vectorize = value;
+ if (!opts_set->x_flag_tree_slp_vectorize
+ && !opts_set->x_flag_tree_vectorize)
+ opts->x_flag_tree_slp_vectorize = value;
+ if (!opts_set->x_flag_vect_cost_model)
+ opts->x_flag_vect_cost_model = VECT_COST_MODEL_DYNAMIC;
+ if (!opts_set->x_flag_tree_loop_distribute_patterns)
+ opts->x_flag_tree_loop_distribute_patterns = value;
+}
+
/* 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
break;
case OPT_fsanitize_:
+ case OPT_fsanitize_recover_:
{
const char *p = arg;
+ unsigned int *flag
+ = code == OPT_fsanitize_ ? &opts->x_flag_sanitize
+ : &opts->x_flag_sanitize_recover;
while (*p != 0)
{
static const struct
size_t len;
} spec[] =
{
- { "address", SANITIZE_ADDRESS, sizeof "address" - 1 },
+ { "address", SANITIZE_ADDRESS | SANITIZE_USER_ADDRESS,
+ sizeof "address" - 1 },
+ { "kernel-address", SANITIZE_ADDRESS | SANITIZE_KERNEL_ADDRESS,
+ sizeof "kernel-address" - 1 },
{ "thread", SANITIZE_THREAD, sizeof "thread" - 1 },
+ { "leak", SANITIZE_LEAK, sizeof "leak" - 1 },
{ "shift", SANITIZE_SHIFT, sizeof "shift" - 1 },
{ "integer-divide-by-zero", SANITIZE_DIVIDE,
sizeof "integer-divide-by-zero" - 1 },
{ "unreachable", SANITIZE_UNREACHABLE,
sizeof "unreachable" - 1 },
{ "vla-bound", SANITIZE_VLA, sizeof "vla-bound" - 1 },
+ { "return", SANITIZE_RETURN, sizeof "return" - 1 },
{ "null", SANITIZE_NULL, sizeof "null" - 1 },
+ { "signed-integer-overflow", SANITIZE_SI_OVERFLOW,
+ sizeof "signed-integer-overflow" -1 },
+ { "bool", SANITIZE_BOOL, sizeof "bool" - 1 },
+ { "enum", SANITIZE_ENUM, sizeof "enum" - 1 },
+ { "float-divide-by-zero", SANITIZE_FLOAT_DIVIDE,
+ sizeof "float-divide-by-zero" - 1 },
+ { "float-cast-overflow", SANITIZE_FLOAT_CAST,
+ sizeof "float-cast-overflow" - 1 },
+ { "bounds", SANITIZE_BOUNDS, sizeof "bounds" - 1 },
+ { "alignment", SANITIZE_ALIGNMENT, sizeof "alignment" - 1 },
+ { "nonnull-attribute", SANITIZE_NONNULL_ATTRIBUTE,
+ sizeof "nonnull-attribute" - 1 },
+ { "returns-nonnull-attribute",
+ SANITIZE_RETURNS_NONNULL_ATTRIBUTE,
+ sizeof "returns-nonnull-attribute" - 1 },
+ { "object-size", SANITIZE_OBJECT_SIZE,
+ sizeof "object-size" - 1 },
{ NULL, 0, 0 }
};
const char *comma;
{
/* Handle both -fsanitize and -fno-sanitize cases. */
if (value)
- flag_sanitize |= spec[i].flag;
+ *flag |= spec[i].flag;
else
- flag_sanitize &= ~spec[i].flag;
+ *flag &= ~spec[i].flag;
found = true;
break;
}
if (! found)
- warning_at (loc, 0,
- "unrecognized argument to -fsanitize= option: %q.*s",
- (int) len, p);
+ error_at (loc,
+ "unrecognized argument to -fsanitize%s= option: %q.*s",
+ code == OPT_fsanitize_ ? "" : "-recover", (int) len, p);
if (comma == NULL)
break;
p = comma + 1;
}
- /* When instrumenting the pointers, we don't want to remove
- the null pointer checks. */
- if (flag_sanitize & SANITIZE_NULL)
- opts->x_flag_delete_null_pointer_checks = 0;
+ if (code != OPT_fsanitize_)
+ break;
+
+ /* Kernel ASan implies normal ASan but does not yet support
+ all features. */
+ if (opts->x_flag_sanitize & SANITIZE_KERNEL_ADDRESS)
+ {
+ maybe_set_param_value (PARAM_ASAN_INSTRUMENTATION_WITH_CALL_THRESHOLD, 0,
+ opts->x_param_values,
+ opts_set->x_param_values);
+ maybe_set_param_value (PARAM_ASAN_GLOBALS, 0,
+ opts->x_param_values,
+ opts_set->x_param_values);
+ maybe_set_param_value (PARAM_ASAN_STACK, 0,
+ opts->x_param_values,
+ opts_set->x_param_values);
+ maybe_set_param_value (PARAM_ASAN_USE_AFTER_RETURN, 0,
+ opts->x_param_values,
+ opts_set->x_param_values);
+ }
+
break;
}
+ case OPT_fasan_shadow_offset_:
+ /* Deferred. */
+ break;
+
+ case OPT_fsanitize_recover:
+ if (value)
+ opts->x_flag_sanitize_recover
+ |= SANITIZE_UNDEFINED | SANITIZE_NONDEFAULT;
+ else
+ opts->x_flag_sanitize_recover
+ &= ~(SANITIZE_UNDEFINED | SANITIZE_NONDEFAULT);
+ break;
+
case OPT_O:
case OPT_Os:
case OPT_Ofast:
/* Deferred. */
break;
+ case OPT_foffload_:
+ /* Deferred. */
+ break;
+
+#ifndef ACCEL_COMPILER
+ case OPT_foffload_abi_:
+ error_at (loc, "-foffload-abi option can be specified only for "
+ "offload compiler");
+ break;
+#endif
+
case OPT_fpack_struct_:
if (value <= 0 || (value & (value - 1)) || value > 16)
error_at (loc,
value = true;
/* No break here - do -fprofile-use processing. */
case OPT_fprofile_use:
- if (!opts_set->x_flag_branch_probabilities)
- opts->x_flag_branch_probabilities = value;
- if (!opts_set->x_flag_profile_values)
- opts->x_flag_profile_values = value;
- if (!opts_set->x_flag_unroll_loops)
- opts->x_flag_unroll_loops = value;
- if (!opts_set->x_flag_peel_loops)
- opts->x_flag_peel_loops = value;
- if (!opts_set->x_flag_tracer)
- opts->x_flag_tracer = value;
- if (!opts_set->x_flag_value_profile_transformations)
- opts->x_flag_value_profile_transformations = value;
- if (!opts_set->x_flag_inline_functions)
- opts->x_flag_inline_functions = value;
- if (!opts_set->x_flag_ipa_cp)
- opts->x_flag_ipa_cp = value;
- if (!opts_set->x_flag_ipa_cp_clone
- && value && opts->x_flag_ipa_cp)
- opts->x_flag_ipa_cp_clone = value;
- if (!opts_set->x_flag_predictive_commoning)
- opts->x_flag_predictive_commoning = value;
- if (!opts_set->x_flag_unswitch_loops)
- opts->x_flag_unswitch_loops = value;
- if (!opts_set->x_flag_gcse_after_reload)
- opts->x_flag_gcse_after_reload = value;
- if (!opts_set->x_flag_tree_loop_vectorize
- && !opts_set->x_flag_tree_vectorize)
- opts->x_flag_tree_loop_vectorize = value;
- if (!opts_set->x_flag_tree_slp_vectorize
- && !opts_set->x_flag_tree_vectorize)
- opts->x_flag_tree_slp_vectorize = value;
- if (!opts_set->x_flag_vect_cost_model)
- opts->x_flag_vect_cost_model = VECT_COST_MODEL_DYNAMIC;
- if (!opts_set->x_flag_tree_loop_distribute_patterns)
- opts->x_flag_tree_loop_distribute_patterns = value;
- /* Indirect call profiling should do all useful transformations
- speculative devirutalization does. */
+ enable_fdo_optimizations (opts, opts_set, value);
+ if (!opts_set->x_flag_profile_reorder_functions)
+ opts->x_flag_profile_reorder_functions = value;
+ /* Indirect call profiling should do all useful transformations
+ speculative devirtualization does. */
if (!opts_set->x_flag_devirtualize_speculatively
&& opts->x_flag_value_profile_transformations)
opts->x_flag_devirtualize_speculatively = false;
break;
+ case OPT_fauto_profile_:
+ opts->x_auto_profile_file = xstrdup (arg);
+ opts->x_flag_auto_profile = true;
+ value = true;
+ /* No break here - do -fauto-profile processing. */
+ case OPT_fauto_profile:
+ enable_fdo_optimizations (opts, opts_set, value);
+ if (!opts_set->x_flag_profile_correction)
+ opts->x_flag_profile_correction = value;
+ maybe_set_param_value (
+ PARAM_EARLY_INLINER_MAX_ITERATIONS, 10,
+ opts->x_param_values, opts_set->x_param_values);
+ break;
+
case OPT_fprofile_generate_:
opts->x_profile_data_prefix = xstrdup (arg);
value = true;
/* 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 && opts->x_in_lto_p)
+ if (!opts_set->x_flag_ipa_reference)
opts->x_flag_ipa_reference = false;
break;
? STATIC_BUILTIN_STACK_CHECK
: GENERIC_STACK_CHECK;
else
- warning_at (loc, 0, "unknown stack check parameter \"%s\"", arg);
+ warning_at (loc, 0, "unknown stack check parameter %qs", arg);
break;
case OPT_fstack_limit:
case OPT_g:
set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg, opts, opts_set,
- loc);
+ loc);
break;
case OPT_gcoff:
loc);
break;
+ case OPT_gz:
+ case OPT_gz_:
+ /* Handled completely via specs. */
+ break;
+
case OPT_pedantic_errors:
dc->pedantic_errors = 1;
control_warning_option (OPT_Wpedantic, DK_ERROR, value,
opts->x_flag_wrapv = 0;
break;
+ case OPT_fipa_icf:
+ opts->x_flag_ipa_icf_functions = value;
+ opts->x_flag_ipa_icf_variables = value;
+ break;
+
default:
/* If the flag was handled in a standard way, assume the lack of
processing here is intentional. */
if (opts_set->x_write_symbols != NO_DEBUG
&& opts->x_write_symbols != NO_DEBUG
&& type != opts->x_write_symbols)
- error_at (loc, "debug format \"%s\" conflicts with prior selection",
+ error_at (loc, "debug format %qs conflicts with prior selection",
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. */
+ /* A debug flag without a level defaults to level 2.
+ If off or at level 1, set it to level 2, but if already
+ at level 3, don't lower it. */
if (*arg == '\0')
{
- if (!opts->x_debug_info_level)
+ if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL)
opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
}
else
{
int argval = integral_argument (arg);
if (argval == -1)
- error_at (loc, "unrecognised debug output level \"%s\"", arg);
+ error_at (loc, "unrecognised debug output level %qs", arg);
else if (argval > 3)
- error_at (loc, "debug output level %s is too high", arg);
+ error_at (loc, "debug output level %qs is too high", arg);
else
opts->x_debug_info_level = (enum debug_info_levels) argval;
}
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 if ((orig_diag_kind == DK_WARNING || orig_diag_kind == DK_PEDWARN
+ || diag_kind == DK_WARNING)
+ && context->warning_as_error_requested)
+ return xstrdup (cl_options[OPT_Werror].opt_text);
else
return NULL;
}
projects / gcc.git / blobdiff