diff options
Diffstat (limited to 'gcc-4.9/gcc/opts.c')
| -rw-r--r-- | gcc-4.9/gcc/opts.c | 91 |
1 files changed, 89 insertions, 2 deletions
diff --git a/gcc-4.9/gcc/opts.c b/gcc-4.9/gcc/opts.c index a588d2ec8..ac589412c 100644 --- a/gcc-4.9/gcc/opts.c +++ b/gcc-4.9/gcc/opts.c @@ -485,7 +485,6 @@ static const struct default_options default_options_table[] = { OPT_LEVELS_2_PLUS, OPT_ftree_pre, NULL, 1 }, { OPT_LEVELS_2_PLUS, OPT_ftree_switch_conversion, NULL, 1 }, { OPT_LEVELS_2_PLUS, OPT_fipa_cp, NULL, 1 }, - { OPT_LEVELS_2_PLUS, OPT_fdevirtualize, NULL, 1 }, { OPT_LEVELS_2_PLUS, OPT_fdevirtualize_speculatively, NULL, 1 }, { OPT_LEVELS_2_PLUS, OPT_fipa_sra, NULL, 1 }, { OPT_LEVELS_2_PLUS, OPT_falign_loops, NULL, 1 }, @@ -870,6 +869,27 @@ finish_options (struct gcc_options *opts, struct gcc_options *opts_set, opts->x_param_values, opts_set->x_param_values); } + if (opts->x_profile_arc_flag + || opts->x_flag_branch_probabilities) + { + maybe_set_param_value + (PARAM_EARLY_INLINER_MAX_ITERATIONS, 2, + opts->x_param_values, opts_set->x_param_values); + } + + if (!(opts->x_flag_auto_profile + || (opts->x_profile_arc_flag || opts->x_flag_branch_probabilities))) + { + /* In plain mode, we relax the limit to allow funcs not declared as + inline but with big_speedup or good inline hints to be inline candidates + in plain mode. This change will improve some performance but also + increase code size. PARAM_INLINE_UNIT_GROWTH is used to trim down code + size without affecting the improved performance. */ + maybe_set_param_value + (PARAM_INLINE_UNIT_GROWTH, 25, + opts->x_param_values, opts_set->x_param_values); + } + /* Tune vectorization related parametees according to cost model. */ if (opts->x_flag_vect_cost_model == VECT_COST_MODEL_CHEAP) { @@ -907,6 +927,40 @@ finish_options (struct gcc_options *opts, struct gcc_options *opts_set, /* Turn on -ffunction-sections when -freorder-functions=* is used. */ if (opts->x_flag_reorder_functions > 1) opts->x_flag_function_sections = 1; + + /* LIPO module grouping depends on the memory consumed by the profile-gen + parsing phase, recorded in a per-module ggc_memory field of the module + info struct. This will be higher when debug generation is on via + -g/-gmlt, which causes the FE to generate debug structures that will + increase the ggc_total_memory. This could in theory cause the module + groups to be slightly more conservative. Disable -g/-gmlt under + -fripa -fprofile-generate, but provide an option to override this + in case we actually need to debug an instrumented binary. */ + if (opts->x_profile_arc_flag + && opts->x_flag_dyn_ipa + && opts->x_debug_info_level != DINFO_LEVEL_NONE + && !opts->x_flag_dyn_ipa_allow_debug) + { + inform (loc, + "Debug generation via -g option disabled under -fripa " + "-fprofile-generate (use -fripa-allow-debug to override)"); + set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, "0", opts, opts_set, + loc); + } + + /* Userspace and kernel ASan conflict with each other and with TSan. */ + + if ((flag_sanitize & SANITIZE_USER_ADDRESS) + && (flag_sanitize & SANITIZE_KERNEL_ADDRESS)) + error_at (loc, + "-fsanitize=address is incompatible with " + "-fsanitize=kernel-address"); + + if ((flag_sanitize & SANITIZE_ADDRESS) + && (flag_sanitize & SANITIZE_THREAD)) + error_at (loc, + "-fsanitize=address and -fsanitize=kernel-address " + "are incompatible with -fsanitize=thread"); } #define LEFT_COLUMN 27 @@ -1562,7 +1616,10 @@ common_handle_option (struct gcc_options *opts, 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 }, @@ -1623,6 +1680,25 @@ common_handle_option (struct gcc_options *opts, the null pointer checks. */ if (flag_sanitize & SANITIZE_NULL) opts->x_flag_delete_null_pointer_checks = 0; + + /* Kernel ASan implies normal ASan but does not yet support + all features. */ + if (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; } @@ -1887,6 +1963,10 @@ common_handle_option (struct gcc_options *opts, /* Deferred. */ break; + case OPT_ffunction_attribute_list_: + /* Deferred. */ + break; + case OPT_fsched_verbose_: #ifdef INSN_SCHEDULING /* Handled with Var in common.opt. */ @@ -1970,6 +2050,12 @@ common_handle_option (struct gcc_options *opts, set_debug_level (DWARF2_DEBUG, false, "", opts, opts_set, loc); break; + case OPT_gline_tables_only: + set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, "1", opts, opts_set, + loc); + opts->x_debug_line_tables_only = 1; + break; + case OPT_gsplit_dwarf: set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, "", opts, opts_set, loc); @@ -2167,6 +2253,7 @@ 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_debug_line_tables_only = 0; opts->x_use_gnu_debug_info_extensions = extended; if (type == NO_DEBUG) |