+++ /dev/null
-/* Command line option handling.
- Copyright (C) 2002-2020 Free Software Foundation, Inc.
- Contributed by Neil Booth.
-
-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 "intl.h"
-#include "coretypes.h"
-#include "opts.h"
-#include "tm.h"
-#include "flags.h"
-#include "diagnostic.h"
-#include "opts-diagnostic.h"
-#include "insn-attr-common.h"
-#include "common/common-target.h"
-#include "spellcheck.h"
-#include "opt-suggestions.h"
-#include "diagnostic-color.h"
-
-static void set_Wstrict_aliasing (struct gcc_options *opts, int onoff);
-
-/* Indexed by enum debug_info_type. */
-const char *const debug_type_names[] =
-{
- "none", "stabs", "dwarf-2", "xcoff", "vms"
-};
-
-/* Parse the -femit-struct-debug-detailed option value
- and set the flag variables. */
-
-#define MATCH( prefix, string ) \
- ((strncmp (prefix, string, sizeof prefix - 1) == 0) \
- ? ((string += sizeof prefix - 1), 1) : 0)
-
-void
-set_struct_debug_option (struct gcc_options *opts, location_t loc,
- const char *spec)
-{
- /* various labels for comparison */
- static const char dfn_lbl[] = "dfn:", dir_lbl[] = "dir:", ind_lbl[] = "ind:";
- static const char ord_lbl[] = "ord:", gen_lbl[] = "gen:";
- static const char none_lbl[] = "none", any_lbl[] = "any";
- static const char base_lbl[] = "base", sys_lbl[] = "sys";
-
- enum debug_struct_file files = DINFO_STRUCT_FILE_ANY;
- /* Default is to apply to as much as possible. */
- enum debug_info_usage usage = DINFO_USAGE_NUM_ENUMS;
- int ord = 1, gen = 1;
-
- /* What usage? */
- if (MATCH (dfn_lbl, spec))
- usage = DINFO_USAGE_DFN;
- else if (MATCH (dir_lbl, spec))
- usage = DINFO_USAGE_DIR_USE;
- else if (MATCH (ind_lbl, spec))
- usage = DINFO_USAGE_IND_USE;
-
- /* Generics or not? */
- if (MATCH (ord_lbl, spec))
- gen = 0;
- else if (MATCH (gen_lbl, spec))
- ord = 0;
-
- /* What allowable environment? */
- if (MATCH (none_lbl, spec))
- files = DINFO_STRUCT_FILE_NONE;
- else if (MATCH (any_lbl, spec))
- files = DINFO_STRUCT_FILE_ANY;
- else if (MATCH (sys_lbl, spec))
- files = DINFO_STRUCT_FILE_SYS;
- else if (MATCH (base_lbl, spec))
- files = DINFO_STRUCT_FILE_BASE;
- else
- error_at (loc,
- "argument %qs to %<-femit-struct-debug-detailed%> "
- "not recognized",
- spec);
-
- /* Effect the specification. */
- if (usage == DINFO_USAGE_NUM_ENUMS)
- {
- if (ord)
- {
- opts->x_debug_struct_ordinary[DINFO_USAGE_DFN] = files;
- opts->x_debug_struct_ordinary[DINFO_USAGE_DIR_USE] = files;
- opts->x_debug_struct_ordinary[DINFO_USAGE_IND_USE] = files;
- }
- if (gen)
- {
- opts->x_debug_struct_generic[DINFO_USAGE_DFN] = files;
- opts->x_debug_struct_generic[DINFO_USAGE_DIR_USE] = files;
- opts->x_debug_struct_generic[DINFO_USAGE_IND_USE] = files;
- }
- }
- else
- {
- if (ord)
- opts->x_debug_struct_ordinary[usage] = files;
- if (gen)
- opts->x_debug_struct_generic[usage] = files;
- }
-
- if (*spec == ',')
- set_struct_debug_option (opts, loc, spec+1);
- else
- {
- /* No more -femit-struct-debug-detailed specifications.
- Do final checks. */
- if (*spec != '\0')
- error_at (loc,
- "argument %qs to %<-femit-struct-debug-detailed%> unknown",
- spec);
- if (opts->x_debug_struct_ordinary[DINFO_USAGE_DIR_USE]
- < opts->x_debug_struct_ordinary[DINFO_USAGE_IND_USE]
- || opts->x_debug_struct_generic[DINFO_USAGE_DIR_USE]
- < opts->x_debug_struct_generic[DINFO_USAGE_IND_USE])
- error_at (loc,
- "%<-femit-struct-debug-detailed=dir:...%> must allow "
- "at least as much as "
- "%<-femit-struct-debug-detailed=ind:...%>");
- }
-}
-
-/* Strip off a legitimate source ending from the input string NAME of
- length LEN. Rather than having to know the names used by all of
- our front ends, we strip off an ending of a period followed by
- up to fource characters. (C++ uses ".cpp".) */
-
-void
-strip_off_ending (char *name, int len)
-{
- int i;
- for (i = 2; i < 5 && len > i; i++)
- {
- if (name[len - i] == '.')
- {
- name[len - i] = '\0';
- break;
- }
- }
-}
-
-/* Find the base name of a path, stripping off both directories and
- a single final extension. */
-int
-base_of_path (const char *path, const char **base_out)
-{
- const char *base = path;
- const char *dot = 0;
- const char *p = path;
- char c = *p;
- while (c)
- {
- if (IS_DIR_SEPARATOR (c))
- {
- base = p + 1;
- dot = 0;
- }
- else if (c == '.')
- dot = p;
- c = *++p;
- }
- if (!dot)
- dot = p;
- *base_out = base;
- return dot - base;
-}
-
-/* What to print when a switch has no documentation. */
-static const char undocumented_msg[] = N_("This option lacks documentation.");
-static const char use_diagnosed_msg[] = N_("Uses of this option are diagnosed.");
-
-typedef char *char_p; /* For DEF_VEC_P. */
-
-static void set_debug_level (enum debug_info_type type, int extended,
- const char *arg, struct gcc_options *opts,
- struct gcc_options *opts_set,
- location_t loc);
-static void set_fast_math_flags (struct gcc_options *opts, int set);
-static void decode_d_option (const char *arg, struct gcc_options *opts,
- location_t loc, diagnostic_context *dc);
-static void set_unsafe_math_optimizations_flags (struct gcc_options *opts,
- int set);
-static void enable_warning_as_error (const char *arg, int value,
- unsigned int lang_mask,
- const struct cl_option_handlers *handlers,
- struct gcc_options *opts,
- struct gcc_options *opts_set,
- location_t loc,
- diagnostic_context *dc);
-
-/* Handle a back-end option; arguments and return value as for
- handle_option. */
-
-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,
- location_t loc,
- const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
- diagnostic_context *dc, void (*) (void))
-{
- gcc_assert (dc == global_dc);
- gcc_assert (kind == DK_UNSPECIFIED);
- return targetm_common.handle_option (opts, opts_set, decoded, loc);
-}
-
-/* Add comma-separated strings to a char_p vector. */
-
-static void
-add_comma_separated_to_vector (void **pvec, const char *arg)
-{
- char *tmp;
- char *r;
- char *w;
- char *token_start;
- vec<char_p> *v = (vec<char_p> *) *pvec;
-
- vec_check_alloc (v, 1);
-
- /* We never free this string. */
- tmp = xstrdup (arg);
-
- r = tmp;
- w = tmp;
- token_start = tmp;
-
- while (*r != '\0')
- {
- if (*r == ',')
- {
- *w++ = '\0';
- ++r;
- v->safe_push (token_start);
- token_start = w;
- }
- if (*r == '\\' && r[1] == ',')
- {
- *w++ = ',';
- r += 2;
- }
- else
- *w++ = *r++;
- }
-
- *w = '\0';
- if (*token_start != '\0')
- v->safe_push (token_start);
-
- *pvec = v;
-}
-
-/* Initialize opts_obstack. */
-
-void
-init_opts_obstack (void)
-{
- gcc_obstack_init (&opts_obstack);
-}
-
-/* Initialize OPTS and OPTS_SET before using them in parsing options. */
-
-void
-init_options_struct (struct gcc_options *opts, struct gcc_options *opts_set)
-{
- /* Ensure that opts_obstack has already been initialized by the time
- that we initialize any gcc_options instances (PR jit/68446). */
- gcc_assert (opts_obstack.chunk_size > 0);
-
- *opts = global_options_init;
-
- if (opts_set)
- memset (opts_set, 0, sizeof (*opts_set));
-
- /* 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 default_options_optimization
- so the latter can modify it. */
- opts->x_target_flags = targetm_common.default_target_flags;
-
- /* Some targets have ABI-specified unwind tables. */
- opts->x_flag_unwind_tables = targetm_common.unwind_tables_default;
-
- /* Some targets have other target-specific initialization. */
- targetm_common.option_init_struct (opts);
-}
-
-/* If indicated by the optimization level LEVEL (-Os if SIZE is set,
- -Ofast if FAST is set, -Og if DEBUG is set), apply the option DEFAULT_OPT
- to OPTS and OPTS_SET, diagnostic context DC, location LOC, with language
- mask LANG_MASK and option handlers HANDLERS. */
-
-static void
-maybe_default_option (struct gcc_options *opts,
- struct gcc_options *opts_set,
- const struct default_options *default_opt,
- int level, bool size, bool fast, bool debug,
- unsigned int lang_mask,
- const struct cl_option_handlers *handlers,
- location_t loc,
- diagnostic_context *dc)
-{
- const struct cl_option *option = &cl_options[default_opt->opt_index];
- bool enabled;
-
- if (size)
- gcc_assert (level == 2);
- if (fast)
- gcc_assert (level == 3);
- if (debug)
- gcc_assert (level == 1);
-
- switch (default_opt->levels)
- {
- case OPT_LEVELS_ALL:
- enabled = true;
- break;
-
- case OPT_LEVELS_0_ONLY:
- enabled = (level == 0);
- break;
-
- case OPT_LEVELS_1_PLUS:
- enabled = (level >= 1);
- break;
-
- case OPT_LEVELS_1_PLUS_SPEED_ONLY:
- enabled = (level >= 1 && !size && !debug);
- break;
-
- case OPT_LEVELS_1_PLUS_NOT_DEBUG:
- enabled = (level >= 1 && !debug);
- break;
-
- case OPT_LEVELS_2_PLUS:
- enabled = (level >= 2);
- break;
-
- case OPT_LEVELS_2_PLUS_SPEED_ONLY:
- enabled = (level >= 2 && !size && !debug);
- break;
-
- case OPT_LEVELS_3_PLUS:
- enabled = (level >= 3);
- break;
-
- case OPT_LEVELS_3_PLUS_AND_SIZE:
- enabled = (level >= 3 || size);
- break;
-
- case OPT_LEVELS_SIZE:
- enabled = size;
- break;
-
- case OPT_LEVELS_FAST:
- enabled = fast;
- break;
-
- case OPT_LEVELS_NONE:
- default:
- gcc_unreachable ();
- }
-
- if (enabled)
- handle_generated_option (opts, opts_set, default_opt->opt_index,
- default_opt->arg, default_opt->value,
- lang_mask, DK_UNSPECIFIED, loc,
- handlers, true, dc);
- else if (default_opt->arg == NULL
- && !option->cl_reject_negative
- && !(option->flags & CL_PARAMS))
- handle_generated_option (opts, opts_set, default_opt->opt_index,
- default_opt->arg, !default_opt->value,
- lang_mask, DK_UNSPECIFIED, loc,
- handlers, true, dc);
-}
-
-/* As indicated by the optimization level LEVEL (-Os if SIZE is set,
- -Ofast if FAST is set), apply the options in array DEFAULT_OPTS to
- OPTS and OPTS_SET, diagnostic context DC, location LOC, with
- language mask LANG_MASK and option handlers HANDLERS. */
-
-static void
-maybe_default_options (struct gcc_options *opts,
- struct gcc_options *opts_set,
- const struct default_options *default_opts,
- int level, bool size, bool fast, bool debug,
- unsigned int lang_mask,
- const struct cl_option_handlers *handlers,
- location_t loc,
- diagnostic_context *dc)
-{
- size_t i;
-
- for (i = 0; default_opts[i].levels != OPT_LEVELS_NONE; i++)
- maybe_default_option (opts, opts_set, &default_opts[i],
- level, size, fast, debug,
- lang_mask, handlers, loc, dc);
-}
-
-/* Table of options enabled by default at different levels.
- Please keep this list sorted by level and alphabetized within
- each level; this makes it easier to keep the documentation
- in sync. */
-
-static const struct default_options default_options_table[] =
- {
- /* -O1 and -Og optimizations. */
- { OPT_LEVELS_1_PLUS, OPT_fcombine_stack_adjustments, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_fcompare_elim, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_fcprop_registers, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_fdefer_pop, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_fforward_propagate, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_fguess_branch_probability, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_fipa_profile, 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_reference_addressable, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_fmerge_constants, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_freorder_blocks, 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_builtin_call_dce, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_ftree_ccp, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_ftree_ch, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_ftree_coalesce_vars, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_ftree_copy_prop, 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_fre, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_ftree_sink, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_ftree_slsr, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_ftree_ter, NULL, 1 },
-
- /* -O1 (and not -Og) optimizations. */
- { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fbranch_count_reg, NULL, 1 },
-#if DELAY_SLOTS
- { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fdelayed_branch, NULL, 1 },
-#endif
- { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fdse, 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_NOT_DEBUG, OPT_finline_functions_called_once, NULL, 1 },
- { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fmove_loop_invariants, NULL, 1 },
- { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fssa_phiopt, NULL, 1 },
- { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_bit_ccp, NULL, 1 },
- { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_dse, NULL, 1 },
- { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_pta, NULL, 1 },
- { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_sra, NULL, 1 },
-
- /* -O2 and -Os optimizations. */
- { OPT_LEVELS_2_PLUS, OPT_fcaller_saves, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fcode_hoisting, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fcrossjumping, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fcse_follow_jumps, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fdevirtualize, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fdevirtualize_speculatively, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fexpensive_optimizations, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_ffinite_loops, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fgcse, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fhoist_adjacent_loads, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_findirect_inlining, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_finline_small_functions, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fipa_bit_cp, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fipa_cp, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fipa_icf, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fipa_ra, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fipa_sra, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fipa_vrp, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fisolate_erroneous_paths_dereference, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_flra_remat, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_foptimize_sibling_calls, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fpartial_inlining, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fpeephole2, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_freorder_functions, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_frerun_cse_after_loop, NULL, 1 },
-#ifdef INSN_SCHEDULING
- { OPT_LEVELS_2_PLUS, OPT_fschedule_insns2, NULL, 1 },
-#endif
- { OPT_LEVELS_2_PLUS, OPT_fstrict_aliasing, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fstore_merging, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fthread_jumps, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_ftree_pre, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_ftree_switch_conversion, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_ftree_tail_merge, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_ftree_vrp, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_CHEAP },
- { OPT_LEVELS_2_PLUS, OPT_finline_functions, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_ftree_loop_distribute_patterns, NULL, 1 },
-
- /* -O2 and above optimizations, but not -Os or -Og. */
- { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_functions, NULL, 1 },
- { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_jumps, NULL, 1 },
- { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_labels, NULL, 1 },
- { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_loops, NULL, 1 },
- { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_foptimize_strlen, NULL, 1 },
- { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_freorder_blocks_algorithm_, NULL,
- REORDER_BLOCKS_ALGORITHM_STC },
-#ifdef INSN_SCHEDULING
- /* Only run the pre-regalloc scheduling pass if optimizing for speed. */
- { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_fschedule_insns, NULL, 1 },
-#endif
-
- /* -O3 and -Os optimizations. */
-
- /* -O3 optimizations. */
- { OPT_LEVELS_3_PLUS, OPT_fgcse_after_reload, NULL, 1 },
- { OPT_LEVELS_3_PLUS, OPT_fipa_cp_clone, NULL, 1 },
- { OPT_LEVELS_3_PLUS, OPT_floop_interchange, NULL, 1 },
- { OPT_LEVELS_3_PLUS, OPT_floop_unroll_and_jam, NULL, 1 },
- { OPT_LEVELS_3_PLUS, OPT_fpeel_loops, NULL, 1 },
- { OPT_LEVELS_3_PLUS, OPT_fpredictive_commoning, NULL, 1 },
- { OPT_LEVELS_3_PLUS, OPT_fsplit_loops, NULL, 1 },
- { OPT_LEVELS_3_PLUS, OPT_fsplit_paths, NULL, 1 },
- { OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribution, NULL, 1 },
- { OPT_LEVELS_3_PLUS, OPT_ftree_loop_vectorize, NULL, 1 },
- { OPT_LEVELS_3_PLUS, OPT_ftree_partial_pre, NULL, 1 },
- { OPT_LEVELS_3_PLUS, OPT_ftree_slp_vectorize, NULL, 1 },
- { OPT_LEVELS_3_PLUS, OPT_funswitch_loops, NULL, 1 },
- { OPT_LEVELS_3_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_DYNAMIC },
- { OPT_LEVELS_3_PLUS, OPT_fversion_loops_for_strides, NULL, 1 },
-
- /* -O3 parameters. */
- { OPT_LEVELS_3_PLUS, OPT__param_max_inline_insns_auto_, NULL, 30 },
- { OPT_LEVELS_3_PLUS, OPT__param_early_inlining_insns_, NULL, 14 },
- { OPT_LEVELS_3_PLUS, OPT__param_inline_heuristics_hint_percent_, NULL, 600 },
- { OPT_LEVELS_3_PLUS, OPT__param_inline_min_speedup_, NULL, 15 },
- { OPT_LEVELS_3_PLUS, OPT__param_max_inline_insns_single_, NULL, 200 },
-
- /* -Ofast adds optimizations to -O3. */
- { OPT_LEVELS_FAST, OPT_ffast_math, NULL, 1 },
- { OPT_LEVELS_FAST, OPT_fallow_store_data_races, NULL, 1 },
-
- { OPT_LEVELS_NONE, 0, NULL, 0 }
- };
-
-/* Default the options in OPTS and OPTS_SET based on the optimization
- settings in DECODED_OPTIONS and DECODED_OPTIONS_COUNT. */
-void
-default_options_optimization (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;
- int opt2;
- bool openacc_mode = false;
-
- /* Scan to see what optimization level has been specified. That will
- determine the default value of many flags. */
- for (i = 1; i < decoded_options_count; i++)
- {
- struct cl_decoded_option *opt = &decoded_options[i];
- switch (opt->opt_index)
- {
- case OPT_O:
- if (*opt->arg == '\0')
- {
- opts->x_optimize = 1;
- opts->x_optimize_size = 0;
- opts->x_optimize_fast = 0;
- opts->x_optimize_debug = 0;
- }
- else
- {
- const int optimize_val = integral_argument (opt->arg);
- if (optimize_val == -1)
- error_at (loc, "argument to %<-O%> should be a non-negative "
- "integer, %<g%>, %<s%> or %<fast%>");
- else
- {
- opts->x_optimize = optimize_val;
- if ((unsigned int) opts->x_optimize > 255)
- opts->x_optimize = 255;
- opts->x_optimize_size = 0;
- opts->x_optimize_fast = 0;
- opts->x_optimize_debug = 0;
- }
- }
- break;
-
- case OPT_Os:
- opts->x_optimize_size = 1;
-
- /* Optimizing for size forces optimize to be 2. */
- opts->x_optimize = 2;
- opts->x_optimize_fast = 0;
- opts->x_optimize_debug = 0;
- break;
-
- case OPT_Ofast:
- /* -Ofast only adds flags to -O3. */
- opts->x_optimize_size = 0;
- opts->x_optimize = 3;
- opts->x_optimize_fast = 1;
- opts->x_optimize_debug = 0;
- break;
-
- case OPT_Og:
- /* -Og selects optimization level 1. */
- opts->x_optimize_size = 0;
- opts->x_optimize = 1;
- opts->x_optimize_fast = 0;
- opts->x_optimize_debug = 1;
- break;
-
- case OPT_fopenacc:
- if (opt->value)
- openacc_mode = true;
- break;
-
- default:
- /* Ignore other options in this prescan. */
- break;
- }
- }
-
- maybe_default_options (opts, opts_set, default_options_table,
- opts->x_optimize, opts->x_optimize_size,
- opts->x_optimize_fast, opts->x_optimize_debug,
- lang_mask, handlers, loc, dc);
-
- /* -O2 param settings. */
- opt2 = (opts->x_optimize >= 2);
-
- if (openacc_mode)
- SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_pta, true);
-
- /* Track fields in field-sensitive alias analysis. */
- if (opt2)
- SET_OPTION_IF_UNSET (opts, opts_set, param_max_fields_for_field_sensitive,
- 100);
-
- if (opts->x_optimize_size)
- /* We want to crossjump as much as possible. */
- SET_OPTION_IF_UNSET (opts, opts_set, param_min_crossjump_insns, 1);
-
- /* Restrict the amount of work combine does at -Og while retaining
- most of its useful transforms. */
- if (opts->x_optimize_debug)
- SET_OPTION_IF_UNSET (opts, opts_set, param_max_combine_insns, 2);
-
- /* Allow default optimizations to be specified on a per-machine basis. */
- maybe_default_options (opts, opts_set,
- targetm_common.option_optimization_table,
- opts->x_optimize, opts->x_optimize_size,
- opts->x_optimize_fast, opts->x_optimize_debug,
- lang_mask, handlers, loc, dc);
-}
-
-/* Control IPA optimizations based on different live patching LEVEL. */
-static void
-control_options_for_live_patching (struct gcc_options *opts,
- struct gcc_options *opts_set,
- enum live_patching_level level,
- location_t loc)
-{
- gcc_assert (level > LIVE_PATCHING_NONE);
-
- switch (level)
- {
- case LIVE_PATCHING_INLINE_ONLY_STATIC:
- if (opts_set->x_flag_ipa_cp_clone && opts->x_flag_ipa_cp_clone)
- error_at (loc,
- "%<-fipa-cp-clone%> is incompatible with "
- "%<-flive-patching=inline-only-static%>");
- else
- opts->x_flag_ipa_cp_clone = 0;
-
- if (opts_set->x_flag_ipa_sra && opts->x_flag_ipa_sra)
- error_at (loc,
- "%<-fipa-sra%> is incompatible with "
- "%<-flive-patching=inline-only-static%>");
- else
- opts->x_flag_ipa_sra = 0;
-
- if (opts_set->x_flag_partial_inlining && opts->x_flag_partial_inlining)
- error_at (loc,
- "%<-fpartial-inlining%> is incompatible with "
- "%<-flive-patching=inline-only-static%>");
- else
- opts->x_flag_partial_inlining = 0;
-
- if (opts_set->x_flag_ipa_cp && opts->x_flag_ipa_cp)
- error_at (loc,
- "%<-fipa-cp%> is incompatible with "
- "%<-flive-patching=inline-only-static%>");
- else
- opts->x_flag_ipa_cp = 0;
-
- /* FALLTHROUGH. */
- case LIVE_PATCHING_INLINE_CLONE:
- /* live patching should disable whole-program optimization. */
- if (opts_set->x_flag_whole_program && opts->x_flag_whole_program)
- error_at (loc,
- "%<-fwhole-program%> is incompatible with "
- "%<-flive-patching=inline-only-static|inline-clone%>");
- else
- opts->x_flag_whole_program = 0;
-
- /* visibility change should be excluded by !flag_whole_program
- && !in_lto_p && !flag_ipa_cp_clone && !flag_ipa_sra
- && !flag_partial_inlining. */
-
- if (opts_set->x_flag_ipa_pta && opts->x_flag_ipa_pta)
- error_at (loc,
- "%<-fipa-pta%> is incompatible with "
- "%<-flive-patching=inline-only-static|inline-clone%>");
- else
- opts->x_flag_ipa_pta = 0;
-
- if (opts_set->x_flag_ipa_reference && opts->x_flag_ipa_reference)
- error_at (loc,
- "%<-fipa-reference%> is incompatible with "
- "%<-flive-patching=inline-only-static|inline-clone%>");
- else
- opts->x_flag_ipa_reference = 0;
-
- if (opts_set->x_flag_ipa_ra && opts->x_flag_ipa_ra)
- error_at (loc,
- "%<-fipa-ra%> is incompatible with "
- "%<-flive-patching=inline-only-static|inline-clone%>");
- else
- opts->x_flag_ipa_ra = 0;
-
- if (opts_set->x_flag_ipa_icf && opts->x_flag_ipa_icf)
- error_at (loc,
- "%<-fipa-icf%> is incompatible with "
- "%<-flive-patching=inline-only-static|inline-clone%>");
- else
- opts->x_flag_ipa_icf = 0;
-
- if (opts_set->x_flag_ipa_icf_functions && opts->x_flag_ipa_icf_functions)
- error_at (loc,
- "%<-fipa-icf-functions%> is incompatible with "
- "%<-flive-patching=inline-only-static|inline-clone%>");
- else
- opts->x_flag_ipa_icf_functions = 0;
-
- if (opts_set->x_flag_ipa_icf_variables && opts->x_flag_ipa_icf_variables)
- error_at (loc,
- "%<-fipa-icf-variables%> is incompatible with "
- "%<-flive-patching=inline-only-static|inline-clone%>");
- else
- opts->x_flag_ipa_icf_variables = 0;
-
- if (opts_set->x_flag_ipa_bit_cp && opts->x_flag_ipa_bit_cp)
- error_at (loc,
- "%<-fipa-bit-cp%> is incompatible with "
- "%<-flive-patching=inline-only-static|inline-clone%>");
- else
- opts->x_flag_ipa_bit_cp = 0;
-
- if (opts_set->x_flag_ipa_vrp && opts->x_flag_ipa_vrp)
- error_at (loc,
- "%<-fipa-vrp%> is incompatible with "
- "%<-flive-patching=inline-only-static|inline-clone%>");
- else
- opts->x_flag_ipa_vrp = 0;
-
- if (opts_set->x_flag_ipa_pure_const && opts->x_flag_ipa_pure_const)
- error_at (loc,
- "%<-fipa-pure-const%> is incompatible with "
- "%<-flive-patching=inline-only-static|inline-clone%>");
- else
- opts->x_flag_ipa_pure_const = 0;
-
- /* FIXME: disable unreachable code removal. */
-
- /* discovery of functions/variables with no address taken. */
- if (opts_set->x_flag_ipa_reference_addressable
- && opts->x_flag_ipa_reference_addressable)
- error_at (loc,
- "%<-fipa-reference-addressable%> is incompatible with "
- "%<-flive-patching=inline-only-static|inline-clone%>");
- else
- opts->x_flag_ipa_reference_addressable = 0;
-
- /* ipa stack alignment propagation. */
- if (opts_set->x_flag_ipa_stack_alignment
- && opts->x_flag_ipa_stack_alignment)
- error_at (loc,
- "%<-fipa-stack-alignment%> is incompatible with "
- "%<-flive-patching=inline-only-static|inline-clone%>");
- else
- opts->x_flag_ipa_stack_alignment = 0;
- break;
- default:
- gcc_unreachable ();
- }
-}
-
-/* --help option argument if set. */
-vec<const char *> help_option_arguments;
-
-
-/* After all options at LOC have been read into OPTS and OPTS_SET,
- finalize settings of those options and diagnose incompatible
- combinations. */
-void
-finish_options (struct gcc_options *opts, struct gcc_options *opts_set,
- location_t loc)
-{
- enum unwind_info_type ui_except;
-
- if (opts->x_dump_base_name
- && ! opts->x_dump_base_name_prefixed)
- {
- const char *sep = opts->x_dump_base_name;
-
- for (; *sep; sep++)
- if (IS_DIR_SEPARATOR (*sep))
- break;
-
- if (*sep)
- /* If dump_base_path contains subdirectories, don't prepend
- anything. */;
- else if (opts->x_dump_dir_name)
- /* We have a DUMP_DIR_NAME, prepend that. */
- opts->x_dump_base_name = opts_concat (opts->x_dump_dir_name,
- opts->x_dump_base_name, NULL);
- else if (opts->x_aux_base_name
- && strcmp (opts->x_aux_base_name, HOST_BIT_BUCKET) != 0)
- /* AUX_BASE_NAME is set and is not the bit bucket. If it
- contains a directory component, prepend those directories.
- Typically this places things in the same directory as the
- object file. */
- {
- const char *aux_base;
-
- base_of_path (opts->x_aux_base_name, &aux_base);
- if (opts->x_aux_base_name != aux_base)
- {
- int dir_len = aux_base - opts->x_aux_base_name;
- char *new_dump_base_name
- = XOBNEWVEC (&opts_obstack, char,
- strlen (opts->x_dump_base_name) + dir_len + 1);
-
- /* Copy directory component from OPTS->X_AUX_BASE_NAME. */
- memcpy (new_dump_base_name, opts->x_aux_base_name, dir_len);
- /* Append existing OPTS->X_DUMP_BASE_NAME. */
- strcpy (new_dump_base_name + dir_len, opts->x_dump_base_name);
- opts->x_dump_base_name = new_dump_base_name;
- }
- }
-
- /* It is definitely prefixed now. */
- opts->x_dump_base_name_prefixed = true;
- }
-
- /* Handle related options for unit-at-a-time, toplevel-reorder, and
- section-anchors. */
- if (!opts->x_flag_unit_at_a_time)
- {
- if (opts->x_flag_section_anchors && opts_set->x_flag_section_anchors)
- error_at (loc, "section anchors must be disabled when unit-at-a-time "
- "is disabled");
- opts->x_flag_section_anchors = 0;
- if (opts->x_flag_toplevel_reorder == 1)
- error_at (loc, "toplevel reorder must be disabled when unit-at-a-time "
- "is disabled");
- opts->x_flag_toplevel_reorder = 0;
- }
-
- /* -fself-test depends on the state of the compiler prior to
- compiling anything. Ideally it should be run on an empty source
- file. However, in case we get run with actual source, assume
- -fsyntax-only which will inhibit any compiler initialization
- which may confuse the self tests. */
- if (opts->x_flag_self_test)
- opts->x_flag_syntax_only = 1;
-
- if (opts->x_flag_tm && opts->x_flag_non_call_exceptions)
- sorry ("transactional memory is not supported with non-call exceptions");
-
- /* 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 (!opts->x_optimize
- && opts->x_flag_toplevel_reorder == 2
- && !(opts->x_flag_section_anchors && opts_set->x_flag_section_anchors))
- {
- opts->x_flag_toplevel_reorder = 0;
- opts->x_flag_section_anchors = 0;
- }
- if (!opts->x_flag_toplevel_reorder)
- {
- if (opts->x_flag_section_anchors && opts_set->x_flag_section_anchors)
- error_at (loc, "section anchors must be disabled when toplevel reorder"
- " is disabled");
- opts->x_flag_section_anchors = 0;
- }
-
- if (!opts->x_flag_opts_finished)
- {
- /* We initialize opts->x_flag_pie to -1 so that targets can set a
- default value. */
- if (opts->x_flag_pie == -1)
- {
- /* We initialize opts->x_flag_pic to -1 so that we can tell if
- -fpic, -fPIC, -fno-pic or -fno-PIC is used. */
- if (opts->x_flag_pic == -1)
- opts->x_flag_pie = DEFAULT_FLAG_PIE;
- else
- opts->x_flag_pie = 0;
- }
- /* If -fPIE or -fpie is used, turn on PIC. */
- if (opts->x_flag_pie)
- opts->x_flag_pic = opts->x_flag_pie;
- else if (opts->x_flag_pic == -1)
- opts->x_flag_pic = 0;
- if (opts->x_flag_pic && !opts->x_flag_pie)
- opts->x_flag_shlib = 1;
- opts->x_flag_opts_finished = true;
- }
-
- /* We initialize opts->x_flag_stack_protect to -1 so that targets
- can set a default value. */
- if (opts->x_flag_stack_protect == -1)
- opts->x_flag_stack_protect = DEFAULT_FLAG_SSP;
-
- if (opts->x_optimize == 0)
- {
- /* Inlining does not work if not optimizing,
- so force it not to be done. */
- opts->x_warn_inline = 0;
- opts->x_flag_no_inline = 1;
- }
-
- /* The optimization to partition hot and cold basic blocks into separate
- sections of the .o and executable files does not work (currently)
- with exception handling. This is because there is no support for
- generating unwind info. If opts->x_flag_exceptions is turned on
- we need to turn off the partitioning optimization. */
-
- ui_except = targetm_common.except_unwind_info (opts);
-
- if (opts->x_flag_exceptions
- && opts->x_flag_reorder_blocks_and_partition
- && (ui_except == UI_SJLJ || ui_except >= UI_TARGET))
- {
- if (opts_set->x_flag_reorder_blocks_and_partition)
- inform (loc,
- "%<-freorder-blocks-and-partition%> does not work "
- "with exceptions on this architecture");
- opts->x_flag_reorder_blocks_and_partition = 0;
- opts->x_flag_reorder_blocks = 1;
- }
-
- /* If user requested unwind info, then turn off the partitioning
- optimization. */
-
- if (opts->x_flag_unwind_tables
- && !targetm_common.unwind_tables_default
- && opts->x_flag_reorder_blocks_and_partition
- && (ui_except == UI_SJLJ || ui_except >= UI_TARGET))
- {
- if (opts_set->x_flag_reorder_blocks_and_partition)
- inform (loc,
- "%<-freorder-blocks-and-partition%> does not support "
- "unwind info on this architecture");
- opts->x_flag_reorder_blocks_and_partition = 0;
- opts->x_flag_reorder_blocks = 1;
- }
-
- /* If the target requested unwind info, then turn off the partitioning
- optimization with a different message. Likewise, if the target does not
- support named sections. */
-
- if (opts->x_flag_reorder_blocks_and_partition
- && (!targetm_common.have_named_sections
- || (opts->x_flag_unwind_tables
- && targetm_common.unwind_tables_default
- && (ui_except == UI_SJLJ || ui_except >= UI_TARGET))))
- {
- if (opts_set->x_flag_reorder_blocks_and_partition)
- inform (loc,
- "%<-freorder-blocks-and-partition%> does not work "
- "on this architecture");
- opts->x_flag_reorder_blocks_and_partition = 0;
- opts->x_flag_reorder_blocks = 1;
- }
-
-
- /* Pipelining of outer loops is only possible when general pipelining
- capabilities are requested. */
- if (!opts->x_flag_sel_sched_pipelining)
- opts->x_flag_sel_sched_pipelining_outer_loops = 0;
-
- if (opts->x_flag_conserve_stack)
- {
- SET_OPTION_IF_UNSET (opts, opts_set, param_large_stack_frame, 100);
- SET_OPTION_IF_UNSET (opts, opts_set, param_stack_frame_growth, 40);
- }
-
- if (opts->x_flag_lto)
- {
-#ifdef ENABLE_LTO
- opts->x_flag_generate_lto = 1;
-
- /* When generating IL, do not operate in whole-program mode.
- Otherwise, symbols will be privatized too early, causing link
- errors later. */
- opts->x_flag_whole_program = 0;
-#else
- error_at (loc, "LTO support has not been enabled in this configuration");
-#endif
- 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;
- }
-
- /* -gsplit-dwarf isn't compatible with LTO, see PR88389. */
- if (opts->x_dwarf_split_debug_info)
- {
- inform (loc, "%<-gsplit-dwarf%> is not supported with LTO,"
- " disabling");
- opts->x_dwarf_split_debug_info = 0;
- }
- }
-
- /* We initialize opts->x_flag_split_stack to -1 so that targets can set a
- default value if they choose based on other options. */
- if (opts->x_flag_split_stack == -1)
- opts->x_flag_split_stack = 0;
- else if (opts->x_flag_split_stack)
- {
- if (!targetm_common.supports_split_stack (true, opts))
- {
- error_at (loc, "%<-fsplit-stack%> is not supported by "
- "this compiler configuration");
- opts->x_flag_split_stack = 0;
- }
- }
-
- /* If stack splitting is turned on, and the user did not explicitly
- request function partitioning, turn off partitioning, as it
- confuses the linker when trying to handle partitioned split-stack
- code that calls a non-split-stack functions. But if partitioning
- was turned on explicitly just hope for the best. */
- if (opts->x_flag_split_stack
- && opts->x_flag_reorder_blocks_and_partition)
- SET_OPTION_IF_UNSET (opts, opts_set, flag_reorder_blocks_and_partition, 0);
-
- if (opts->x_flag_reorder_blocks_and_partition)
- SET_OPTION_IF_UNSET (opts, opts_set, flag_reorder_functions, 1);
-
- /* The -gsplit-dwarf option requires -ggnu-pubnames. */
- if (opts->x_dwarf_split_debug_info)
- opts->x_debug_generate_pub_sections = 2;
-
- if ((opts->x_flag_sanitize
- & (SANITIZE_USER_ADDRESS | SANITIZE_KERNEL_ADDRESS)) == 0)
- {
- if (opts->x_flag_sanitize & SANITIZE_POINTER_COMPARE)
- error_at (loc,
- "%<-fsanitize=pointer-compare%> must be combined with "
- "%<-fsanitize=address%> or %<-fsanitize=kernel-address%>");
- if (opts->x_flag_sanitize & SANITIZE_POINTER_SUBTRACT)
- error_at (loc,
- "%<-fsanitize=pointer-subtract%> must be combined with "
- "%<-fsanitize=address%> or %<-fsanitize=kernel-address%>");
- }
-
- /* 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%>");
-
- if ((opts->x_flag_sanitize & SANITIZE_LEAK)
- && (opts->x_flag_sanitize & SANITIZE_THREAD))
- error_at (loc,
- "%<-fsanitize=leak%> is incompatible with %<-fsanitize=thread%>");
-
- /* Check error recovery for -fsanitize-recover option. */
- for (int i = 0; sanitizer_opts[i].name != NULL; ++i)
- if ((opts->x_flag_sanitize_recover & sanitizer_opts[i].flag)
- && !sanitizer_opts[i].can_recover)
- error_at (loc, "%<-fsanitize-recover=%s%> is not supported",
- sanitizer_opts[i].name);
-
- /* 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 & ~(SANITIZE_LEAK | SANITIZE_UNREACHABLE))
- opts->x_flag_aggressive_loop_optimizations = 0;
-
- /* Enable -fsanitize-address-use-after-scope if address sanitizer is
- enabled. */
- if (opts->x_flag_sanitize & SANITIZE_USER_ADDRESS)
- SET_OPTION_IF_UNSET (opts, opts_set, flag_sanitize_address_use_after_scope,
- true);
-
- /* Force -fstack-reuse=none in case -fsanitize-address-use-after-scope
- is enabled. */
- if (opts->x_flag_sanitize_address_use_after_scope)
- {
- if (opts->x_flag_stack_reuse != SR_NONE
- && opts_set->x_flag_stack_reuse != SR_NONE)
- error_at (loc,
- "%<-fsanitize-address-use-after-scope%> requires "
- "%<-fstack-reuse=none%> option");
-
- opts->x_flag_stack_reuse = SR_NONE;
- }
-
- if ((opts->x_flag_sanitize & SANITIZE_USER_ADDRESS) && opts->x_flag_tm)
- sorry ("transactional memory is not supported with %<-fsanitize=address%>");
-
- if ((opts->x_flag_sanitize & SANITIZE_KERNEL_ADDRESS) && opts->x_flag_tm)
- sorry ("transactional memory is not supported with "
- "%<-fsanitize=kernel-address%>");
-
- /* Currently live patching is not support for LTO. */
- if (opts->x_flag_live_patching && opts->x_flag_lto)
- sorry ("live patching is not supported with LTO");
-
- /* Currently vtable verification is not supported for LTO */
- if (opts->x_flag_vtable_verify && opts->x_flag_lto)
- sorry ("vtable verification is not supported with LTO");
-
- /* Control IPA optimizations based on different -flive-patching level. */
- if (opts->x_flag_live_patching)
- {
- control_options_for_live_patching (opts, opts_set,
- opts->x_flag_live_patching,
- loc);
- }
-}
-
-#define LEFT_COLUMN 27
-
-/* Output ITEM, of length ITEM_WIDTH, in the left column,
- followed by word-wrapped HELP in a second column. */
-static void
-wrap_help (const char *help,
- const char *item,
- unsigned int item_width,
- unsigned int columns)
-{
- unsigned int col_width = LEFT_COLUMN;
- unsigned int remaining, room, len;
-
- remaining = strlen (help);
-
- do
- {
- room = columns - 3 - MAX (col_width, item_width);
- if (room > columns)
- room = 0;
- len = remaining;
-
- if (room < len)
- {
- unsigned int i;
-
- for (i = 0; help[i]; i++)
- {
- if (i >= room && len != remaining)
- break;
- if (help[i] == ' ')
- len = i;
- else if ((help[i] == '-' || help[i] == '/')
- && help[i + 1] != ' '
- && i > 0 && ISALPHA (help[i - 1]))
- len = i + 1;
- }
- }
-
- printf (" %-*.*s %.*s\n", col_width, item_width, item, len, help);
- item_width = 0;
- while (help[len] == ' ')
- len++;
- help += len;
- remaining -= len;
- }
- while (remaining);
-}
-
-/* Data structure used to print list of valid option values. */
-
-class option_help_tuple
-{
-public:
- option_help_tuple (int code, vec<const char *> values):
- m_code (code), m_values (values)
- {}
-
- /* Code of an option. */
- int m_code;
-
- /* List of possible values. */
- vec<const char *> m_values;
-};
-
-/* Print help for a specific front-end, etc. */
-static void
-print_filtered_help (unsigned int include_flags,
- unsigned int exclude_flags,
- unsigned int any_flags,
- unsigned int columns,
- struct gcc_options *opts,
- unsigned int lang_mask)
-{
- unsigned int i;
- const char *help;
- bool found = false;
- bool displayed = false;
- char new_help[256];
-
- if (!opts->x_help_printed)
- opts->x_help_printed = XCNEWVAR (char, cl_options_count);
-
- if (!opts->x_help_enum_printed)
- opts->x_help_enum_printed = XCNEWVAR (char, cl_enums_count);
-
- auto_vec<option_help_tuple> help_tuples;
-
- for (i = 0; i < cl_options_count; i++)
- {
- const struct cl_option *option = cl_options + i;
- unsigned int len;
- const char *opt;
- const char *tab;
-
- if (include_flags == 0
- || ((option->flags & include_flags) != include_flags))
- {
- if ((option->flags & any_flags) == 0)
- continue;
- }
-
- /* Skip unwanted switches. */
- if ((option->flags & exclude_flags) != 0)
- continue;
-
- /* The driver currently prints its own help text. */
- if ((option->flags & CL_DRIVER) != 0
- && (option->flags & (((1U << cl_lang_count) - 1)
- | CL_COMMON | CL_TARGET)) == 0)
- continue;
-
- /* If an option contains a language specification,
- exclude it from common unless all languages are present. */
- if ((include_flags & CL_COMMON)
- && !(option->flags & CL_DRIVER)
- && (option->flags & CL_LANG_ALL)
- && (option->flags & CL_LANG_ALL) != CL_LANG_ALL)
- continue;
-
- found = true;
- /* Skip switches that have already been printed. */
- if (opts->x_help_printed[i])
- continue;
-
- opts->x_help_printed[i] = true;
-
- help = option->help;
- if (help == NULL)
- {
- if (exclude_flags & CL_UNDOCUMENTED)
- continue;
-
- help = undocumented_msg;
- }
-
- /* Get the translation. */
- help = _(help);
-
- if (option->alias_target < N_OPTS
- && cl_options [option->alias_target].help)
- {
- const struct cl_option *target = cl_options + option->alias_target;
- if (option->help == NULL)
- {
- /* The option is undocumented but is an alias for an option that
- is documented. If the option has alias arguments, then its
- purpose is to provide certain arguments to the other option, so
- inform the reader of this. Otherwise, point the reader to the
- other option in preference to the former. */
-
- if (option->alias_arg)
- {
- if (option->neg_alias_arg)
- snprintf (new_help, sizeof new_help,
- _("Same as %s%s (or, in negated form, %s%s)."),
- target->opt_text, option->alias_arg,
- target->opt_text, option->neg_alias_arg);
- else
- snprintf (new_help, sizeof new_help,
- _("Same as %s%s."),
- target->opt_text, option->alias_arg);
- }
- else
- snprintf (new_help, sizeof new_help,
- _("Same as %s."),
- target->opt_text);
- }
- else
- {
- /* For documented options with aliases, mention the aliased
- option's name for reference. */
- snprintf (new_help, sizeof new_help,
- _("%s Same as %s."),
- help, cl_options [option->alias_target].opt_text);
- }
-
- help = new_help;
- }
-
- if (option->warn_message)
- {
- /* Mention that the use of the option will trigger a warning. */
- if (help == new_help)
- snprintf (new_help + strlen (new_help),
- sizeof new_help - strlen (new_help),
- " %s", _(use_diagnosed_msg));
- else
- snprintf (new_help, sizeof new_help,
- "%s %s", help, _(use_diagnosed_msg));
-
- help = new_help;
- }
-
- /* Find the gap between the name of the
- option and its descriptive text. */
- tab = strchr (help, '\t');
- if (tab)
- {
- len = tab - help;
- opt = help;
- help = tab + 1;
- }
- else
- {
- opt = option->opt_text;
- len = strlen (opt);
- }
-
- /* With the -Q option enabled we change the descriptive text associated
- with an option to be an indication of its current setting. */
- if (!opts->x_quiet_flag)
- {
- void *flag_var = option_flag_var (i, opts);
-
- if (len < (LEFT_COLUMN + 2))
- strcpy (new_help, "\t\t");
- else
- strcpy (new_help, "\t");
-
- /* Set to print whether the option is enabled or disabled,
- or, if it's an alias for another option, the name of
- the aliased option. */
- bool print_state = false;
-
- if (flag_var != NULL
- && option->var_type != CLVC_DEFER)
- {
- /* If OPTION is only available for a specific subset
- of languages other than this one, mention them. */
- bool avail_for_lang = true;
- if (unsigned langset = option->flags & CL_LANG_ALL)
- {
- if (!(langset & lang_mask))
- {
- avail_for_lang = false;
- strcat (new_help, _("[available in "));
- for (unsigned i = 0, n = 0; (1U << i) < CL_LANG_ALL; ++i)
- if (langset & (1U << i))
- {
- if (n++)
- strcat (new_help, ", ");
- strcat (new_help, lang_names[i]);
- }
- strcat (new_help, "]");
- }
- }
- if (!avail_for_lang)
- ; /* Print nothing else if the option is not available
- in the current language. */
- else if (option->flags & CL_JOINED)
- {
- if (option->var_type == CLVC_STRING)
- {
- if (* (const char **) flag_var != NULL)
- snprintf (new_help + strlen (new_help),
- sizeof (new_help) - strlen (new_help),
- "%s", * (const char **) flag_var);
- }
- else if (option->var_type == CLVC_ENUM)
- {
- const struct cl_enum *e = &cl_enums[option->var_enum];
- int value;
- const char *arg = NULL;
-
- value = e->get (flag_var);
- enum_value_to_arg (e->values, &arg, value, lang_mask);
- if (arg == NULL)
- arg = _("[default]");
- snprintf (new_help + strlen (new_help),
- sizeof (new_help) - strlen (new_help),
- "%s", arg);
- }
- else
- {
- if (option->cl_host_wide_int)
- sprintf (new_help + strlen (new_help),
- _("%llu bytes"), (unsigned long long)
- *(unsigned HOST_WIDE_INT *) flag_var);
- else
- sprintf (new_help + strlen (new_help),
- "%i", * (int *) flag_var);
- }
- }
- else
- print_state = true;
- }
- else
- /* When there is no argument, print the option state only
- if the option takes no argument. */
- print_state = !(option->flags & CL_JOINED);
-
- if (print_state)
- {
- if (option->alias_target < N_OPTS
- && option->alias_target != OPT_SPECIAL_warn_removed
- && option->alias_target != OPT_SPECIAL_ignore
- && option->alias_target != OPT_SPECIAL_input_file
- && option->alias_target != OPT_SPECIAL_program_name
- && option->alias_target != OPT_SPECIAL_unknown)
- {
- const struct cl_option *target
- = &cl_options[option->alias_target];
- sprintf (new_help + strlen (new_help), "%s%s",
- target->opt_text,
- option->alias_arg ? option->alias_arg : "");
- }
- else if (option->alias_target == OPT_SPECIAL_ignore)
- strcat (new_help, ("[ignored]"));
- else
- {
- /* Print the state for an on/off option. */
- int ena = option_enabled (i, lang_mask, opts);
- if (ena > 0)
- strcat (new_help, _("[enabled]"));
- else if (ena == 0)
- strcat (new_help, _("[disabled]"));
- }
- }
-
- help = new_help;
- }
-
- if (option->range_max != -1)
- {
- char b[128];
- snprintf (b, sizeof (b), "<%d,%d>", option->range_min,
- option->range_max);
- opt = concat (opt, b, NULL);
- len += strlen (b);
- }
-
- wrap_help (help, opt, len, columns);
- displayed = true;
-
- if (option->var_type == CLVC_ENUM
- && opts->x_help_enum_printed[option->var_enum] != 2)
- opts->x_help_enum_printed[option->var_enum] = 1;
- else
- {
- vec<const char *> option_values
- = targetm_common.get_valid_option_values (i, NULL);
- if (!option_values.is_empty ())
- help_tuples.safe_push (option_help_tuple (i, option_values));
- }
- }
-
- if (! found)
- {
- unsigned int langs = include_flags & CL_LANG_ALL;
-
- if (langs == 0)
- printf (_(" No options with the desired characteristics were found\n"));
- else
- {
- unsigned int i;
-
- /* PR 31349: Tell the user how to see all of the
- options supported by a specific front end. */
- for (i = 0; (1U << i) < CL_LANG_ALL; i ++)
- if ((1U << i) & langs)
- 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"));
-
- putchar ('\n');
-
- /* Print details of enumerated option arguments, if those
- enumerations have help text headings provided. If no help text
- is provided, presume that the possible values are listed in the
- help text for the relevant options. */
- for (i = 0; i < cl_enums_count; i++)
- {
- unsigned int j, pos;
-
- if (opts->x_help_enum_printed[i] != 1)
- continue;
- if (cl_enums[i].help == NULL)
- continue;
- printf (" %s\n ", _(cl_enums[i].help));
- pos = 4;
- for (j = 0; cl_enums[i].values[j].arg != NULL; j++)
- {
- unsigned int len = strlen (cl_enums[i].values[j].arg);
-
- if (pos > 4 && pos + 1 + len <= columns)
- {
- printf (" %s", cl_enums[i].values[j].arg);
- pos += 1 + len;
- }
- else
- {
- if (pos > 4)
- {
- printf ("\n ");
- pos = 4;
- }
- printf ("%s", cl_enums[i].values[j].arg);
- pos += len;
- }
- }
- printf ("\n\n");
- opts->x_help_enum_printed[i] = 2;
- }
-
- for (unsigned i = 0; i < help_tuples.length (); i++)
- {
- const struct cl_option *option = cl_options + help_tuples[i].m_code;
- printf (_(" Known valid arguments for %s option:\n "),
- option->opt_text);
- for (unsigned j = 0; j < help_tuples[i].m_values.length (); j++)
- printf (" %s", help_tuples[i].m_values[j]);
- printf ("\n\n");
- }
-}
-
-/* Display help for a specified type of option.
- The options must have ALL of the INCLUDE_FLAGS set
- ANY of the flags in the ANY_FLAGS set
- and NONE of the EXCLUDE_FLAGS set. The current option state is in
- OPTS; LANG_MASK is used for interpreting enumerated option state. */
-static void
-print_specific_help (unsigned int include_flags,
- unsigned int exclude_flags,
- unsigned int any_flags,
- struct gcc_options *opts,
- unsigned int lang_mask)
-{
- unsigned int all_langs_mask = (1U << cl_lang_count) - 1;
- const char * description = NULL;
- const char * descrip_extra = "";
- size_t i;
- unsigned int flag;
-
- /* Sanity check: Make sure that we do not have more
- languages than we have bits available to enumerate them. */
- gcc_assert ((1U << cl_lang_count) <= CL_MIN_OPTION_CLASS);
-
- /* If we have not done so already, obtain
- the desired maximum width of the output. */
- if (opts->x_help_columns == 0)
- {
- opts->x_help_columns = get_terminal_width ();
- if (opts->x_help_columns == INT_MAX)
- /* Use a reasonable default. */
- opts->x_help_columns = 80;
- }
-
- /* Decide upon the title for the options that we are going to display. */
- for (i = 0, flag = 1; flag <= CL_MAX_OPTION_CLASS; flag <<= 1, i ++)
- {
- switch (flag & include_flags)
- {
- case 0:
- case CL_DRIVER:
- break;
-
- case CL_TARGET:
- description = _("The following options are target specific");
- break;
- case CL_WARNING:
- description = _("The following options control compiler warning messages");
- break;
- case CL_OPTIMIZATION:
- description = _("The following options control optimizations");
- break;
- case CL_COMMON:
- description = _("The following options are language-independent");
- break;
- case CL_PARAMS:
- description = _("The following options control parameters");
- break;
- default:
- if (i >= cl_lang_count)
- break;
- if (exclude_flags & all_langs_mask)
- description = _("The following options are specific to just the language ");
- else
- description = _("The following options are supported by the language ");
- descrip_extra = lang_names [i];
- break;
- }
- }
-
- if (description == NULL)
- {
- if (any_flags == 0)
- {
- if (include_flags & CL_UNDOCUMENTED)
- description = _("The following options are not documented");
- else if (include_flags & CL_SEPARATE)
- description = _("The following options take separate arguments");
- else if (include_flags & CL_JOINED)
- description = _("The following options take joined arguments");
- else
- {
- internal_error ("unrecognized %<include_flags 0x%x%> passed "
- "to %<print_specific_help%>",
- include_flags);
- return;
- }
- }
- else
- {
- if (any_flags & all_langs_mask)
- description = _("The following options are language-related");
- else
- description = _("The following options are language-independent");
- }
- }
-
- printf ("%s%s:\n", description, descrip_extra);
- print_filtered_help (include_flags, exclude_flags, any_flags,
- 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)
-{
- SET_OPTION_IF_UNSET (opts, opts_set, flag_branch_probabilities, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_values, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_unroll_loops, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_peel_loops, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_tracer, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_value_profile_transformations,
- value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_inline_functions, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_cp, value);
- if (value)
- {
- SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_cp_clone, 1);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_bit_cp, 1);
- }
- SET_OPTION_IF_UNSET (opts, opts_set, flag_predictive_commoning, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_split_loops, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_unswitch_loops, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_gcse_after_reload, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_loop_vectorize, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_slp_vectorize, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_version_loops_for_strides, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_vect_cost_model,
- VECT_COST_MODEL_DYNAMIC);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_loop_distribute_patterns,
- value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_loop_interchange, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_unroll_jam, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_loop_distribution, value);
-}
-
-/* -f{,no-}sanitize{,-recover}= suboptions. */
-const struct sanitizer_opts_s sanitizer_opts[] =
-{
-#define SANITIZER_OPT(name, flags, recover) \
- { #name, flags, sizeof #name - 1, recover }
- SANITIZER_OPT (address, (SANITIZE_ADDRESS | SANITIZE_USER_ADDRESS), true),
- SANITIZER_OPT (kernel-address, (SANITIZE_ADDRESS | SANITIZE_KERNEL_ADDRESS),
- true),
- SANITIZER_OPT (pointer-compare, SANITIZE_POINTER_COMPARE, true),
- SANITIZER_OPT (pointer-subtract, SANITIZE_POINTER_SUBTRACT, true),
- SANITIZER_OPT (thread, SANITIZE_THREAD, false),
- SANITIZER_OPT (leak, SANITIZE_LEAK, false),
- SANITIZER_OPT (shift, SANITIZE_SHIFT, true),
- SANITIZER_OPT (shift-base, SANITIZE_SHIFT_BASE, true),
- SANITIZER_OPT (shift-exponent, SANITIZE_SHIFT_EXPONENT, true),
- SANITIZER_OPT (integer-divide-by-zero, SANITIZE_DIVIDE, true),
- SANITIZER_OPT (undefined, SANITIZE_UNDEFINED, true),
- SANITIZER_OPT (unreachable, SANITIZE_UNREACHABLE, false),
- SANITIZER_OPT (vla-bound, SANITIZE_VLA, true),
- SANITIZER_OPT (return, SANITIZE_RETURN, false),
- SANITIZER_OPT (null, SANITIZE_NULL, true),
- SANITIZER_OPT (signed-integer-overflow, SANITIZE_SI_OVERFLOW, true),
- SANITIZER_OPT (bool, SANITIZE_BOOL, true),
- SANITIZER_OPT (enum, SANITIZE_ENUM, true),
- SANITIZER_OPT (float-divide-by-zero, SANITIZE_FLOAT_DIVIDE, true),
- SANITIZER_OPT (float-cast-overflow, SANITIZE_FLOAT_CAST, true),
- SANITIZER_OPT (bounds, SANITIZE_BOUNDS, true),
- SANITIZER_OPT (bounds-strict, SANITIZE_BOUNDS | SANITIZE_BOUNDS_STRICT, true),
- SANITIZER_OPT (alignment, SANITIZE_ALIGNMENT, true),
- SANITIZER_OPT (nonnull-attribute, SANITIZE_NONNULL_ATTRIBUTE, true),
- SANITIZER_OPT (returns-nonnull-attribute, SANITIZE_RETURNS_NONNULL_ATTRIBUTE,
- true),
- SANITIZER_OPT (object-size, SANITIZE_OBJECT_SIZE, true),
- SANITIZER_OPT (vptr, SANITIZE_VPTR, true),
- SANITIZER_OPT (pointer-overflow, SANITIZE_POINTER_OVERFLOW, true),
- SANITIZER_OPT (builtin, SANITIZE_BUILTIN, true),
- SANITIZER_OPT (all, ~0U, true),
-#undef SANITIZER_OPT
- { NULL, 0U, 0UL, false }
-};
-
-/* -f{,no-}sanitize-coverage= suboptions. */
-const struct sanitizer_opts_s coverage_sanitizer_opts[] =
-{
-#define COVERAGE_SANITIZER_OPT(name, flags) \
- { #name, flags, sizeof #name - 1, true }
- COVERAGE_SANITIZER_OPT (trace-pc, SANITIZE_COV_TRACE_PC),
- COVERAGE_SANITIZER_OPT (trace-cmp, SANITIZE_COV_TRACE_CMP),
-#undef COVERAGE_SANITIZER_OPT
- { NULL, 0U, 0UL, false }
-};
-
-/* A struct for describing a run of chars within a string. */
-
-class string_fragment
-{
-public:
- string_fragment (const char *start, size_t len)
- : m_start (start), m_len (len) {}
-
- const char *m_start;
- size_t m_len;
-};
-
-/* Specialization of edit_distance_traits for string_fragment,
- for use by get_closest_sanitizer_option. */
-
-template <>
-struct edit_distance_traits<const string_fragment &>
-{
- static size_t get_length (const string_fragment &fragment)
- {
- return fragment.m_len;
- }
-
- static const char *get_string (const string_fragment &fragment)
- {
- return fragment.m_start;
- }
-};
-
-/* Given ARG, an unrecognized sanitizer option, return the best
- matching sanitizer option, or NULL if there isn't one.
- OPTS is array of candidate sanitizer options.
- CODE is OPT_fsanitize_, OPT_fsanitize_recover_ or
- OPT_fsanitize_coverage_.
- VALUE is non-zero for the regular form of the option, zero
- for the "no-" form (e.g. "-fno-sanitize-recover="). */
-
-static const char *
-get_closest_sanitizer_option (const string_fragment &arg,
- const struct sanitizer_opts_s *opts,
- enum opt_code code, int value)
-{
- best_match <const string_fragment &, const char*> bm (arg);
- for (int i = 0; opts[i].name != NULL; ++i)
- {
- /* -fsanitize=all is not valid, so don't offer it. */
- if (code == OPT_fsanitize_
- && opts[i].flag == ~0U
- && value)
- continue;
-
- /* For -fsanitize-recover= (and not -fno-sanitize-recover=),
- don't offer the non-recoverable options. */
- if (code == OPT_fsanitize_recover_
- && !opts[i].can_recover
- && value)
- continue;
-
- bm.consider (opts[i].name);
- }
- return bm.get_best_meaningful_candidate ();
-}
-
-/* Parse comma separated sanitizer suboptions from P for option SCODE,
- adjust previous FLAGS and return new ones. If COMPLAIN is false,
- don't issue diagnostics. */
-
-unsigned int
-parse_sanitizer_options (const char *p, location_t loc, int scode,
- unsigned int flags, int value, bool complain)
-{
- enum opt_code code = (enum opt_code) scode;
-
- const struct sanitizer_opts_s *opts;
- if (code == OPT_fsanitize_coverage_)
- opts = coverage_sanitizer_opts;
- else
- opts = sanitizer_opts;
-
- while (*p != 0)
- {
- size_t len, i;
- bool found = false;
- const char *comma = strchr (p, ',');
-
- if (comma == NULL)
- len = strlen (p);
- else
- len = comma - p;
- if (len == 0)
- {
- p = comma + 1;
- continue;
- }
-
- /* Check to see if the string matches an option class name. */
- for (i = 0; opts[i].name != NULL; ++i)
- if (len == opts[i].len && memcmp (p, opts[i].name, len) == 0)
- {
- /* Handle both -fsanitize and -fno-sanitize cases. */
- if (value && opts[i].flag == ~0U)
- {
- if (code == OPT_fsanitize_)
- {
- if (complain)
- error_at (loc, "%<-fsanitize=all%> option is not valid");
- }
- else
- flags |= ~(SANITIZE_THREAD | SANITIZE_LEAK
- | SANITIZE_UNREACHABLE | SANITIZE_RETURN);
- }
- else if (value)
- {
- /* Do not enable -fsanitize-recover=unreachable and
- -fsanitize-recover=return if -fsanitize-recover=undefined
- is selected. */
- if (code == OPT_fsanitize_recover_
- && opts[i].flag == SANITIZE_UNDEFINED)
- flags |= (SANITIZE_UNDEFINED
- & ~(SANITIZE_UNREACHABLE | SANITIZE_RETURN));
- else
- flags |= opts[i].flag;
- }
- else
- flags &= ~opts[i].flag;
- found = true;
- break;
- }
-
- if (! found && complain)
- {
- const char *hint
- = get_closest_sanitizer_option (string_fragment (p, len),
- opts, code, value);
-
- const char *suffix;
- if (code == OPT_fsanitize_recover_)
- suffix = "-recover";
- else if (code == OPT_fsanitize_coverage_)
- suffix = "-coverage";
- else
- suffix = "";
-
- if (hint)
- error_at (loc,
- "unrecognized argument to %<-f%ssanitize%s=%> "
- "option: %q.*s; did you mean %qs?",
- value ? "" : "no-",
- suffix, (int) len, p, hint);
- else
- error_at (loc,
- "unrecognized argument to %<-f%ssanitize%s=%> option: "
- "%q.*s", value ? "" : "no-",
- suffix, (int) len, p);
- }
-
- if (comma == NULL)
- break;
- p = comma + 1;
- }
- return flags;
-}
-
-/* Parse string values of no_sanitize attribute passed in VALUE.
- Values are separated with comma. */
-
-unsigned int
-parse_no_sanitize_attribute (char *value)
-{
- unsigned int flags = 0;
- unsigned int i;
- char *q = strtok (value, ",");
-
- while (q != NULL)
- {
- for (i = 0; sanitizer_opts[i].name != NULL; ++i)
- if (strcmp (sanitizer_opts[i].name, q) == 0)
- {
- flags |= sanitizer_opts[i].flag;
- if (sanitizer_opts[i].flag == SANITIZE_UNDEFINED)
- flags |= SANITIZE_UNDEFINED_NONDEFAULT;
- break;
- }
-
- if (sanitizer_opts[i].name == NULL)
- warning (OPT_Wattributes,
- "%qs attribute directive ignored", q);
-
- q = strtok (NULL, ",");
- }
-
- return flags;
-}
-
-/* Parse -falign-NAME format for a FLAG value. Return individual
- parsed integer values into RESULT_VALUES array. If REPORT_ERROR is
- set, print error message at LOC location. */
-
-bool
-parse_and_check_align_values (const char *flag,
- const char *name,
- auto_vec<unsigned> &result_values,
- bool report_error,
- location_t loc)
-{
- char *str = xstrdup (flag);
- for (char *p = strtok (str, ":"); p; p = strtok (NULL, ":"))
- {
- char *end;
- int v = strtol (p, &end, 10);
- if (*end != '\0' || v < 0)
- {
- if (report_error)
- error_at (loc, "invalid arguments for %<-falign-%s%> option: %qs",
- name, flag);
-
- return false;
- }
-
- result_values.safe_push ((unsigned)v);
- }
-
- free (str);
-
- /* Check that we have a correct number of values. */
- if (result_values.is_empty () || result_values.length () > 4)
- {
- if (report_error)
- error_at (loc, "invalid number of arguments for %<-falign-%s%> "
- "option: %qs", name, flag);
- return false;
- }
-
- for (unsigned i = 0; i < result_values.length (); i++)
- if (result_values[i] > MAX_CODE_ALIGN_VALUE)
- {
- if (report_error)
- error_at (loc, "%<-falign-%s%> is not between 0 and %d",
- name, MAX_CODE_ALIGN_VALUE);
- return false;
- }
-
- return true;
-}
-
-/* Check that alignment value FLAG for -falign-NAME is valid at a given
- location LOC. */
-
-static void
-check_alignment_argument (location_t loc, const char *flag, const char *name)
-{
- auto_vec<unsigned> align_result;
- parse_and_check_align_values (flag, name, align_result, true, loc);
-}
-
-/* Print help when OPT__help_ is set. */
-
-void
-print_help (struct gcc_options *opts, unsigned int lang_mask,
- const char *help_option_argument)
-{
- const char *a = help_option_argument;
- unsigned int include_flags = 0;
- /* Note - by default we include undocumented options when listing
- specific classes. If you only want to see documented options
- then add ",^undocumented" to the --help= option. E.g.:
-
- --help=target,^undocumented */
- unsigned int exclude_flags = 0;
-
- if (lang_mask == CL_DRIVER)
- return;
-
- /* Walk along the argument string, parsing each word in turn.
- The format is:
- arg = [^]{word}[,{arg}]
- word = {optimizers|target|warnings|undocumented|
- params|common|<language>} */
- while (*a != 0)
- {
- static const struct
- {
- const char *string;
- unsigned int flag;
- }
- specifics[] =
- {
- { "optimizers", CL_OPTIMIZATION },
- { "target", CL_TARGET },
- { "warnings", CL_WARNING },
- { "undocumented", CL_UNDOCUMENTED },
- { "params", CL_PARAMS },
- { "joined", CL_JOINED },
- { "separate", CL_SEPARATE },
- { "common", CL_COMMON },
- { NULL, 0 }
- };
- unsigned int *pflags;
- const char *comma;
- unsigned int lang_flag, specific_flag;
- unsigned int len;
- unsigned int i;
-
- if (*a == '^')
- {
- ++a;
- if (*a == '\0')
- {
- error ("missing argument to %qs", "--help=^");
- break;
- }
- pflags = &exclude_flags;
- }
- else
- pflags = &include_flags;
-
- comma = strchr (a, ',');
- if (comma == NULL)
- len = strlen (a);
- else
- len = comma - a;
- if (len == 0)
- {
- a = comma + 1;
- continue;
- }
-
- /* Check to see if the string matches an option class name. */
- for (i = 0, specific_flag = 0; specifics[i].string != NULL; i++)
- if (strncasecmp (a, specifics[i].string, len) == 0)
- {
- specific_flag = specifics[i].flag;
- break;
- }
-
- /* Check to see if the string matches a language name.
- Note - we rely upon the alpha-sorted nature of the entries in
- the lang_names array, specifically that shorter names appear
- before their longer variants. (i.e. C before C++). That way
- when we are attempting to match --help=c for example we will
- match with C first and not C++. */
- for (i = 0, lang_flag = 0; i < cl_lang_count; i++)
- if (strncasecmp (a, lang_names[i], len) == 0)
- {
- lang_flag = 1U << i;
- break;
- }
-
- if (specific_flag != 0)
- {
- if (lang_flag == 0)
- *pflags |= specific_flag;
- else
- {
- /* The option's argument matches both the start of a
- language name and the start of an option class name.
- We have a special case for when the user has
- specified "--help=c", but otherwise we have to issue
- a warning. */
- if (strncasecmp (a, "c", len) == 0)
- *pflags |= lang_flag;
- else
- warning (0,
- "%<--help%> argument %q.*s is ambiguous, "
- "please be more specific",
- len, a);
- }
- }
- else if (lang_flag != 0)
- *pflags |= lang_flag;
- else
- warning (0,
- "unrecognized argument to %<--help=%> option: %q.*s",
- len, a);
-
- if (comma == NULL)
- break;
- a = comma + 1;
- }
-
- /* We started using PerFunction/Optimization for parameters and
- a warning. We should exclude these from optimization options. */
- if (include_flags & CL_OPTIMIZATION)
- exclude_flags |= CL_WARNING;
- if (!(include_flags & CL_PARAMS))
- exclude_flags |= CL_PARAMS;
-
- if (include_flags)
- print_specific_help (include_flags, exclude_flags, 0, opts,
- lang_mask);
-}
-
-/* Handle target- and language-independent options. Return zero to
- generate an "unknown option" message. Only options that need
- extra handling need to be listed here; if you simply want
- DECODED->value assigned to a variable, it happens automatically. */
-
-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,
- location_t loc,
- const struct cl_option_handlers *handlers,
- diagnostic_context *dc,
- void (*target_option_override_hook) (void))
-{
- size_t scode = decoded->opt_index;
- const char *arg = decoded->arg;
- HOST_WIDE_INT value = decoded->value;
- enum opt_code code = (enum opt_code) scode;
-
- gcc_assert (decoded->canonical_option_num_elements <= 2);
-
- switch (code)
- {
- case OPT__help:
- {
- unsigned int all_langs_mask = (1U << cl_lang_count) - 1;
- unsigned int undoc_mask;
- unsigned int i;
-
- if (lang_mask == CL_DRIVER)
- break;
-
- undoc_mask = ((opts->x_verbose_flag | opts->x_extra_warnings)
- ? 0
- : CL_UNDOCUMENTED);
- target_option_override_hook ();
- /* First display any single language specific options. */
- for (i = 0; i < cl_lang_count; i++)
- print_specific_help
- (1U << i, (all_langs_mask & (~ (1U << i))) | undoc_mask, 0, opts,
- lang_mask);
- /* Next display any multi language specific options. */
- print_specific_help (0, undoc_mask, all_langs_mask, opts, lang_mask);
- /* Then display any remaining, non-language options. */
- for (i = CL_MIN_OPTION_CLASS; i <= CL_MAX_OPTION_CLASS; i <<= 1)
- if (i != CL_DRIVER)
- print_specific_help (i, undoc_mask, 0, opts, lang_mask);
- opts->x_exit_after_options = true;
- break;
- }
-
- case OPT__target_help:
- if (lang_mask == CL_DRIVER)
- break;
-
- target_option_override_hook ();
- print_specific_help (CL_TARGET, CL_UNDOCUMENTED, 0, opts, lang_mask);
- opts->x_exit_after_options = true;
- break;
-
- case OPT__help_:
- {
- help_option_arguments.safe_push (arg);
- opts->x_exit_after_options = true;
- break;
- }
-
- case OPT__version:
- if (lang_mask == CL_DRIVER)
- break;
-
- opts->x_exit_after_options = true;
- break;
-
- case OPT__completion_:
- break;
-
- case OPT_fsanitize_:
- opts->x_flag_sanitize
- = parse_sanitizer_options (arg, loc, code,
- opts->x_flag_sanitize, value, true);
-
- /* Kernel ASan implies normal ASan but does not yet support
- all features. */
- if (opts->x_flag_sanitize & SANITIZE_KERNEL_ADDRESS)
- {
- SET_OPTION_IF_UNSET (opts, opts_set,
- param_asan_instrumentation_with_call_threshold,
- 0);
- SET_OPTION_IF_UNSET (opts, opts_set, param_asan_globals, 0);
- SET_OPTION_IF_UNSET (opts, opts_set, param_asan_stack, 0);
- SET_OPTION_IF_UNSET (opts, opts_set, param_asan_protect_allocas, 0);
- SET_OPTION_IF_UNSET (opts, opts_set, param_asan_use_after_return, 0);
- }
- break;
-
- case OPT_fsanitize_recover_:
- opts->x_flag_sanitize_recover
- = parse_sanitizer_options (arg, loc, code,
- opts->x_flag_sanitize_recover, value, true);
- break;
-
- case OPT_fasan_shadow_offset_:
- /* Deferred. */
- break;
-
- case OPT_fsanitize_address_use_after_scope:
- opts->x_flag_sanitize_address_use_after_scope = value;
- break;
-
- case OPT_fsanitize_recover:
- if (value)
- opts->x_flag_sanitize_recover
- |= (SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT)
- & ~(SANITIZE_UNREACHABLE | SANITIZE_RETURN);
- else
- opts->x_flag_sanitize_recover
- &= ~(SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT);
- break;
-
- case OPT_fsanitize_coverage_:
- opts->x_flag_sanitize_coverage
- = parse_sanitizer_options (arg, loc, code,
- opts->x_flag_sanitize_coverage, value, true);
- break;
-
- case OPT_O:
- case OPT_Os:
- case OPT_Ofast:
- case OPT_Og:
- /* Currently handled in a prescan. */
- break;
-
- case OPT_Werror:
- dc->warning_as_error_requested = value;
- break;
-
- case OPT_Werror_:
- if (lang_mask == CL_DRIVER)
- break;
-
- enable_warning_as_error (arg, value, lang_mask, handlers,
- opts, opts_set, loc, dc);
- break;
-
- case OPT_Wfatal_errors:
- dc->fatal_errors = value;
- break;
-
- case OPT_Wstack_usage_:
- opts->x_flag_stack_usage_info = value != -1;
- break;
-
- case OPT_Wstrict_aliasing:
- set_Wstrict_aliasing (opts, value);
- break;
-
- case OPT_Wstrict_overflow:
- opts->x_warn_strict_overflow = (value
- ? (int) WARN_STRICT_OVERFLOW_CONDITIONAL
- : 0);
- break;
-
- case OPT_Wsystem_headers:
- dc->dc_warn_system_headers = value;
- break;
-
- case OPT_aux_info:
- opts->x_flag_gen_aux_info = 1;
- break;
-
- case OPT_auxbase_strip:
- {
- char *tmp = xstrdup (arg);
- strip_off_ending (tmp, strlen (tmp));
- if (tmp[0])
- opts->x_aux_base_name = tmp;
- else
- free (tmp);
- }
- break;
-
- case OPT_d:
- decode_d_option (arg, opts, loc, dc);
- break;
-
- case OPT_fcall_used_:
- case OPT_fcall_saved_:
- /* Deferred. */
- break;
-
- case OPT_fdbg_cnt_:
- /* Deferred. */
- break;
-
- case OPT_fdbg_cnt_list:
- /* Deferred. */
- opts->x_exit_after_options = true;
- break;
-
- case OPT_fdebug_prefix_map_:
- case OPT_ffile_prefix_map_:
- /* Deferred. */
- break;
-
- case OPT_fcallgraph_info:
- opts->x_flag_callgraph_info = CALLGRAPH_INFO_NAKED;
- break;
-
- case OPT_fcallgraph_info_:
- {
- char *my_arg, *p;
- my_arg = xstrdup (arg);
- p = strtok (my_arg, ",");
- while (p)
- {
- if (strcmp (p, "su") == 0)
- {
- opts->x_flag_callgraph_info |= CALLGRAPH_INFO_STACK_USAGE;
- opts->x_flag_stack_usage_info = true;
- }
- else if (strcmp (p, "da") == 0)
- opts->x_flag_callgraph_info |= CALLGRAPH_INFO_DYNAMIC_ALLOC;
- else
- return 0;
- p = strtok (NULL, ",");
- }
- free (my_arg);
- }
- break;
-
- case OPT_fdiagnostics_show_location_:
- diagnostic_prefixing_rule (dc) = (diagnostic_prefixing_rule_t) value;
- break;
-
- case OPT_fdiagnostics_show_caret:
- dc->show_caret = value;
- break;
-
- case OPT_fdiagnostics_show_labels:
- dc->show_labels_p = value;
- break;
-
- case OPT_fdiagnostics_show_line_numbers:
- dc->show_line_numbers_p = value;
- break;
-
- case OPT_fdiagnostics_color_:
- diagnostic_color_init (dc, value);
- break;
-
- case OPT_fdiagnostics_urls_:
- diagnostic_urls_init (dc, value);
- break;
-
- case OPT_fdiagnostics_format_:
- diagnostic_output_format_init (dc,
- (enum diagnostics_output_format)value);
- break;
-
- case OPT_fdiagnostics_parseable_fixits:
- dc->parseable_fixits_p = value;
- break;
-
- case OPT_fdiagnostics_show_cwe:
- dc->show_cwe = value;
- break;
-
- case OPT_fdiagnostics_path_format_:
- dc->path_format = (enum diagnostic_path_format)value;
- break;
-
- case OPT_fdiagnostics_show_path_depths:
- dc->show_path_depths = value;
- break;
-
- case OPT_fdiagnostics_show_option:
- dc->show_option_requested = value;
- break;
-
- case OPT_fdiagnostics_minimum_margin_width_:
- dc->min_margin_width = value;
- break;
-
- case OPT_fdump_:
- /* Deferred. */
- break;
-
- case OPT_ffast_math:
- set_fast_math_flags (opts, value);
- break;
-
- case OPT_funsafe_math_optimizations:
- set_unsafe_math_optimizations_flags (opts, value);
- break;
-
- case OPT_ffixed_:
- /* Deferred. */
- break;
-
- case OPT_finline_limit_:
- SET_OPTION_IF_UNSET (opts, opts_set, param_max_inline_insns_single,
- value / 2);
- SET_OPTION_IF_UNSET (opts, opts_set, param_max_inline_insns_auto,
- value / 2);
- break;
-
- case OPT_finstrument_functions_exclude_function_list_:
- add_comma_separated_to_vector
- (&opts->x_flag_instrument_functions_exclude_functions, arg);
- break;
-
- case OPT_finstrument_functions_exclude_file_list_:
- add_comma_separated_to_vector
- (&opts->x_flag_instrument_functions_exclude_files, arg);
- break;
-
- case OPT_fmessage_length_:
- pp_set_line_maximum_length (dc->printer, value);
- diagnostic_set_caret_max_width (dc, value);
- break;
-
- case OPT_fopt_info:
- case OPT_fopt_info_:
- /* Deferred. */
- break;
-
- case OPT_foffload_:
- {
- const char *p = arg;
- opts->x_flag_disable_hsa = true;
- while (*p != 0)
- {
- const char *comma = strchr (p, ',');
-
- if ((strncmp (p, "disable", 7) == 0)
- && (p[7] == ',' || p[7] == '\0'))
- {
- opts->x_flag_disable_hsa = true;
- break;
- }
-
- if ((strncmp (p, "hsa", 3) == 0)
- && (p[3] == ',' || p[3] == '\0'))
- {
-#ifdef ENABLE_HSA
- opts->x_flag_disable_hsa = false;
-#else
- sorry ("HSA has not been enabled during configuration");
-#endif
- }
- if (!comma)
- break;
- p = comma + 1;
- }
- 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,
- "structure alignment must be a small power of two, not %wu",
- value);
- else
- opts->x_initial_max_fld_align = value;
- break;
-
- case OPT_fplugin_:
- case OPT_fplugin_arg_:
- /* Deferred. */
- break;
-
- case OPT_fprofile_use_:
- opts->x_profile_data_prefix = xstrdup (arg);
- opts->x_flag_profile_use = true;
- value = true;
- /* No break here - do -fprofile-use processing. */
- /* FALLTHRU */
- case OPT_fprofile_use:
- enable_fdo_optimizations (opts, opts_set, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_reorder_functions,
- value);
- /* Indirect call profiling should do all useful transformations
- speculative devirtualization does. */
- if (opts->x_flag_value_profile_transformations)
- SET_OPTION_IF_UNSET (opts, opts_set, 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. */
- /* FALLTHRU */
- case OPT_fauto_profile:
- enable_fdo_optimizations (opts, opts_set, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_correction, value);
- SET_OPTION_IF_UNSET (opts, opts_set,
- param_early_inliner_max_iterations, 10);
- break;
-
- case OPT_fprofile_generate_:
- opts->x_profile_data_prefix = xstrdup (arg);
- value = true;
- /* No break here - do -fprofile-generate processing. */
- /* FALLTHRU */
- case OPT_fprofile_generate:
- SET_OPTION_IF_UNSET (opts, opts_set, profile_arc_flag, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_values, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_inline_functions, value);
- SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_bit_cp, value);
- break;
-
- case OPT_fpatchable_function_entry_:
- {
- char *patch_area_arg = xstrdup (arg);
- char *comma = strchr (patch_area_arg, ',');
- if (comma)
- {
- *comma = '\0';
- function_entry_patch_area_size =
- integral_argument (patch_area_arg);
- function_entry_patch_area_start =
- integral_argument (comma + 1);
- }
- else
- {
- function_entry_patch_area_size =
- integral_argument (patch_area_arg);
- function_entry_patch_area_start = 0;
- }
- if (function_entry_patch_area_size < 0
- || function_entry_patch_area_start < 0
- || function_entry_patch_area_size
- < function_entry_patch_area_start)
- error ("invalid arguments for %<-fpatchable_function_entry%>");
- free (patch_area_arg);
- }
- break;
-
- case OPT_ftree_vectorize:
- /* Automatically sets -ftree-loop-vectorize and
- -ftree-slp-vectorize. Nothing more to do here. */
- break;
- case OPT_fshow_column:
- dc->show_column = value;
- break;
-
- case OPT_frandom_seed:
- /* The real switch is -fno-random-seed. */
- if (value)
- return false;
- /* Deferred. */
- break;
-
- case OPT_frandom_seed_:
- /* Deferred. */
- break;
-
- case OPT_fsched_verbose_:
-#ifdef INSN_SCHEDULING
- /* Handled with Var in common.opt. */
- break;
-#else
- return false;
-#endif
-
- case OPT_fsched_stalled_insns_:
- opts->x_flag_sched_stalled_insns = value;
- if (opts->x_flag_sched_stalled_insns == 0)
- opts->x_flag_sched_stalled_insns = -1;
- break;
-
- case OPT_fsched_stalled_insns_dep_:
- opts->x_flag_sched_stalled_insns_dep = value;
- break;
-
- case OPT_fstack_check_:
- if (!strcmp (arg, "no"))
- opts->x_flag_stack_check = NO_STACK_CHECK;
- else if (!strcmp (arg, "generic"))
- /* This is the old stack checking method. */
- opts->x_flag_stack_check = STACK_CHECK_BUILTIN
- ? FULL_BUILTIN_STACK_CHECK
- : GENERIC_STACK_CHECK;
- else if (!strcmp (arg, "specific"))
- /* This is the new stack checking method. */
- opts->x_flag_stack_check = STACK_CHECK_BUILTIN
- ? FULL_BUILTIN_STACK_CHECK
- : STACK_CHECK_STATIC_BUILTIN
- ? STATIC_BUILTIN_STACK_CHECK
- : GENERIC_STACK_CHECK;
- else
- warning_at (loc, 0, "unknown stack check parameter %qs", arg);
- break;
-
- case OPT_fstack_limit:
- /* The real switch is -fno-stack-limit. */
- if (value)
- return false;
- /* Deferred. */
- break;
-
- case OPT_fstack_limit_register_:
- case OPT_fstack_limit_symbol_:
- /* Deferred. */
- break;
-
- case OPT_fstack_usage:
- opts->x_flag_stack_usage = value;
- opts->x_flag_stack_usage_info = value != 0;
- break;
-
- case OPT_g:
- set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg, opts, opts_set,
- loc);
- break;
-
- case OPT_gdwarf:
- if (arg && strlen (arg) != 0)
- {
- error_at (loc, "%<-gdwarf%s%> is ambiguous; "
- "use %<-gdwarf-%s%> for DWARF version "
- "or %<-gdwarf%> %<-g%s%> for debug level", arg, arg, arg);
- break;
- }
- else
- value = opts->x_dwarf_version;
-
- /* FALLTHRU */
- case OPT_gdwarf_:
- if (value < 2 || value > 5)
- error_at (loc, "dwarf version %wu is not supported", value);
- else
- opts->x_dwarf_version = value;
- set_debug_level (DWARF2_DEBUG, false, "", opts, opts_set, loc);
- break;
-
- case OPT_gsplit_dwarf:
- set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, "", opts, opts_set,
- loc);
- break;
-
- case OPT_ggdb:
- set_debug_level (NO_DEBUG, 2, arg, opts, opts_set, loc);
- break;
-
- case OPT_gstabs:
- case OPT_gstabs_:
- set_debug_level (DBX_DEBUG, code == OPT_gstabs_, arg, opts, opts_set,
- loc);
- break;
-
- case OPT_gvms:
- set_debug_level (VMS_DEBUG, false, arg, opts, opts_set, loc);
- break;
-
- case OPT_gxcoff:
- case OPT_gxcoff_:
- set_debug_level (XCOFF_DEBUG, code == OPT_gxcoff_, arg, opts, opts_set,
- 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, NULL, value,
- loc, lang_mask,
- handlers, opts, opts_set,
- dc);
- break;
-
- case OPT_flto:
- opts->x_flag_lto = value ? "" : NULL;
- break;
-
- case OPT_flto_:
- if (strcmp (arg, "none") != 0
- && strcmp (arg, "jobserver") != 0
- && strcmp (arg, "auto") != 0
- && atoi (arg) == 0)
- error_at (loc,
- "unrecognized argument to %<-flto=%> option: %qs", arg);
- break;
-
- case OPT_w:
- dc->dc_inhibit_warnings = true;
- break;
-
- case OPT_fmax_errors_:
- dc->max_errors = value;
- break;
-
- case OPT_fuse_ld_bfd:
- case OPT_fuse_ld_gold:
- case OPT_fuse_ld_lld:
- case OPT_fuse_linker_plugin:
- /* No-op. Used by the driver and passed to us because it starts with f.*/
- break;
-
- case OPT_fwrapv:
- if (value)
- opts->x_flag_trapv = 0;
- break;
-
- case OPT_ftrapv:
- if (value)
- opts->x_flag_wrapv = 0;
- break;
-
- case OPT_fstrict_overflow:
- opts->x_flag_wrapv = !value;
- opts->x_flag_wrapv_pointer = !value;
- if (!value)
- opts->x_flag_trapv = 0;
- break;
-
- case OPT_fipa_icf:
- opts->x_flag_ipa_icf_functions = value;
- opts->x_flag_ipa_icf_variables = value;
- break;
-
- case OPT_falign_loops_:
- check_alignment_argument (loc, arg, "loops");
- break;
-
- case OPT_falign_jumps_:
- check_alignment_argument (loc, arg, "jumps");
- break;
-
- case OPT_falign_labels_:
- check_alignment_argument (loc, arg, "labels");
- break;
-
- case OPT_falign_functions_:
- check_alignment_argument (loc, arg, "functions");
- break;
-
- default:
- /* If the flag was handled in a standard way, assume the lack of
- processing here is intentional. */
- gcc_assert (option_flag_var (scode, opts));
- break;
- }
-
- common_handle_option_auto (opts, opts_set, decoded, lang_mask, kind,
- loc, handlers, dc);
- return true;
-}
-
-/* Used to set the level of strict aliasing warnings in OPTS,
- when no level is specified (i.e., when -Wstrict-aliasing, and not
- -Wstrict-aliasing=level was given).
- ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified,
- and 0 otherwise. After calling this function, wstrict_aliasing will be
- set to the default value of -Wstrict_aliasing=level, currently 3. */
-static void
-set_Wstrict_aliasing (struct gcc_options *opts, int onoff)
-{
- gcc_assert (onoff == 0 || onoff == 1);
- if (onoff != 0)
- opts->x_warn_strict_aliasing = 3;
- else
- opts->x_warn_strict_aliasing = 0;
-}
-
-/* The following routines are useful in setting all the flags that
- -ffast-math and -fno-fast-math imply. */
-static void
-set_fast_math_flags (struct gcc_options *opts, int set)
-{
- if (!opts->frontend_set_flag_unsafe_math_optimizations)
- {
- opts->x_flag_unsafe_math_optimizations = set;
- set_unsafe_math_optimizations_flags (opts, set);
- }
- if (!opts->frontend_set_flag_finite_math_only)
- opts->x_flag_finite_math_only = set;
- if (!opts->frontend_set_flag_errno_math)
- opts->x_flag_errno_math = !set;
- if (set)
- {
- if (opts->frontend_set_flag_excess_precision == EXCESS_PRECISION_DEFAULT)
- opts->x_flag_excess_precision
- = set ? EXCESS_PRECISION_FAST : EXCESS_PRECISION_DEFAULT;
- if (!opts->frontend_set_flag_signaling_nans)
- opts->x_flag_signaling_nans = 0;
- if (!opts->frontend_set_flag_rounding_math)
- opts->x_flag_rounding_math = 0;
- if (!opts->frontend_set_flag_cx_limited_range)
- opts->x_flag_cx_limited_range = 1;
- }
-}
-
-/* When -funsafe-math-optimizations is set the following
- flags are set as well. */
-static void
-set_unsafe_math_optimizations_flags (struct gcc_options *opts, int set)
-{
- if (!opts->frontend_set_flag_trapping_math)
- opts->x_flag_trapping_math = !set;
- if (!opts->frontend_set_flag_signed_zeros)
- opts->x_flag_signed_zeros = !set;
- if (!opts->frontend_set_flag_associative_math)
- opts->x_flag_associative_math = set;
- if (!opts->frontend_set_flag_reciprocal_math)
- opts->x_flag_reciprocal_math = set;
-}
-
-/* Return true iff flags in OPTS are set as if -ffast-math. */
-bool
-fast_math_flags_set_p (const struct gcc_options *opts)
-{
- return (!opts->x_flag_trapping_math
- && opts->x_flag_unsafe_math_optimizations
- && opts->x_flag_finite_math_only
- && !opts->x_flag_signed_zeros
- && !opts->x_flag_errno_math
- && opts->x_flag_excess_precision == EXCESS_PRECISION_FAST);
-}
-
-/* Return true iff flags are set as if -ffast-math but using the flags stored
- in the struct cl_optimization structure. */
-bool
-fast_math_flags_struct_set_p (struct cl_optimization *opt)
-{
- return (!opt->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 for options OPTS
- (OPTS_SET->x_write_symbols storing whether a debug type was passed
- explicitly), location LOC. EXTENDED is true or false to support
- extended output (2 is special and means "-ggdb" was given). */
-static void
-set_debug_level (enum debug_info_type type, int extended, const char *arg,
- struct gcc_options *opts, struct gcc_options *opts_set,
- location_t loc)
-{
- opts->x_use_gnu_debug_info_extensions = extended;
-
- if (type == NO_DEBUG)
- {
- if (opts->x_write_symbols == NO_DEBUG)
- {
- opts->x_write_symbols = PREFERRED_DEBUGGING_TYPE;
-
- if (extended == 2)
- {
-#if defined DWARF2_DEBUGGING_INFO || defined DWARF2_LINENO_DEBUGGING_INFO
- opts->x_write_symbols = DWARF2_DEBUG;
-#elif defined DBX_DEBUGGING_INFO
- opts->x_write_symbols = DBX_DEBUG;
-#endif
- }
-
- if (opts->x_write_symbols == NO_DEBUG)
- warning_at (loc, 0, "target system does not support debug output");
- }
- }
- else
- {
- /* Does it conflict with an already selected type? */
- if (opts_set->x_write_symbols != NO_DEBUG
- && opts->x_write_symbols != NO_DEBUG
- && type != opts->x_write_symbols)
- 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.
- 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 < DINFO_LEVEL_NORMAL)
- opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
- }
- else
- {
- int argval = integral_argument (arg);
- if (argval == -1)
- error_at (loc, "unrecognized debug output level %qs", arg);
- else if (argval > 3)
- error_at (loc, "debug output level %qs is too high", arg);
- else
- opts->x_debug_info_level = (enum debug_info_levels) argval;
- }
-}
-
-/* Arrange to dump core on error for diagnostic context DC. (The
- regular error message is still printed first, except in the case of
- abort ().) */
-
-static void
-setup_core_dumping (diagnostic_context *dc)
-{
-#ifdef SIGABRT
- signal (SIGABRT, SIG_DFL);
-#endif
-#if defined(HAVE_SETRLIMIT)
- {
- struct rlimit rlim;
- if (getrlimit (RLIMIT_CORE, &rlim) != 0)
- fatal_error (input_location, "getting core file size maximum limit: %m");
- rlim.rlim_cur = rlim.rlim_max;
- if (setrlimit (RLIMIT_CORE, &rlim) != 0)
- fatal_error (input_location,
- "setting core file size limit to maximum: %m");
- }
-#endif
- diagnostic_abort_on_error (dc);
-}
-
-/* Parse a -d<ARG> command line switch for OPTS, location LOC,
- diagnostic context DC. */
-
-static void
-decode_d_option (const char *arg, struct gcc_options *opts,
- location_t loc, diagnostic_context *dc)
-{
- int c;
-
- while (*arg)
- switch (c = *arg++)
- {
- case 'A':
- opts->x_flag_debug_asm = 1;
- break;
- case 'p':
- opts->x_flag_print_asm_name = 1;
- break;
- case 'P':
- opts->x_flag_dump_rtl_in_asm = 1;
- opts->x_flag_print_asm_name = 1;
- break;
- case 'x':
- opts->x_rtl_dump_and_exit = 1;
- break;
- case 'D': /* These are handled by the preprocessor. */
- case 'I':
- case 'M':
- case 'N':
- case 'U':
- break;
- case 'H':
- setup_core_dumping (dc);
- break;
- case 'a':
- opts->x_flag_dump_all_passed = true;
- break;
-
- default:
- warning_at (loc, 0, "unrecognized gcc debugging option: %c", c);
- break;
- }
-}
-
-/* Enable (or disable if VALUE is 0) a warning option ARG (language
- mask LANG_MASK, option handlers HANDLERS) as an error for option
- structures OPTS and OPTS_SET, diagnostic context DC (possibly
- NULL), location LOC. This is used by -Werror=. */
-
-static void
-enable_warning_as_error (const char *arg, int value, unsigned int lang_mask,
- const struct cl_option_handlers *handlers,
- struct gcc_options *opts,
- struct gcc_options *opts_set,
- location_t loc, diagnostic_context *dc)
-{
- char *new_option;
- int option_index;
-
- new_option = XNEWVEC (char, strlen (arg) + 2);
- new_option[0] = 'W';
- strcpy (new_option + 1, arg);
- option_index = find_opt (new_option, lang_mask);
- if (option_index == OPT_SPECIAL_unknown)
- {
- option_proposer op;
- const char *hint = op.suggest_option (new_option);
- if (hint)
- error_at (loc, "%<-W%serror=%s%>: no option %<-%s%>;"
- " did you mean %<-%s%>?", value ? "" : "no-",
- arg, new_option, hint);
- else
- error_at (loc, "%<-W%serror=%s%>: no option %<-%s%>",
- value ? "" : "no-", arg, new_option);
- }
- else if (!(cl_options[option_index].flags & CL_WARNING))
- error_at (loc, "%<-Werror=%s%>: %<-%s%> is not an option that "
- "controls warnings", arg, new_option);
- else
- {
- const diagnostic_t kind = value ? DK_ERROR : DK_WARNING;
- const char *arg = NULL;
-
- if (cl_options[option_index].flags & CL_JOINED)
- arg = new_option + cl_options[option_index].opt_len;
- control_warning_option (option_index, (int) kind, arg, value,
- loc, lang_mask,
- handlers, opts, opts_set, dc);
- }
- 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)
- && context->warning_as_error_requested)
- return xstrdup (cl_options[OPT_Werror].opt_text);
- else
- return NULL;
-}
-
-/* Return malloced memory for a URL describing the option OPTION_INDEX
- which enabled a diagnostic (context CONTEXT). */
-
-char *
-get_option_url (diagnostic_context *, int option_index)
-{
- if (option_index)
- /* DOCUMENTATION_ROOT_URL should be supplied via -D by the Makefile
- (see --with-documentation-root-url).
-
- Expect an anchor of the form "index-Wfoo" e.g.
- <a name="index-Wformat"></a>, and thus an id within
- the URL of "#index-Wformat". */
- return concat (DOCUMENTATION_ROOT_URL,
- "Warning-Options.html",
- "#index", cl_options[option_index].opt_text,
- NULL);
- else
- return NULL;
-}
projects / thirdparty / gcc.git / blobdiff