X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=gcc%2Fcommon.opt;h=be6fe4f35d2ed894697b39cdcbe9decc454e8d63;hb=7e8d1b2d1ef3ab73a6123b0fa5000e4675752d97;hp=ec1dbd1b25431e59ac6ab06414180d640acc0c10;hpb=5460e1fc15f7f0bab22b39e76ae736ca43b7e654;p=gcc.git diff --git a/gcc/common.opt b/gcc/common.opt index ec1dbd1b254..be6fe4f35d2 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -32,6 +32,9 @@ int optimize Variable int optimize_size +Variable +int optimize_debug + ; Not used directly to control optimizations, only to save -Ofast ; setting for "optimize" attributes. Variable @@ -138,9 +141,6 @@ bool use_gnu_debug_info_extensions Variable unsigned int initial_max_fld_align = TARGET_DEFAULT_PACK_STRUCT -Variable -enum vect_verbosity_levels user_vect_verbosity_level = MAX_VERBOSITY_LEVEL - ; Type of stack check. Variable enum stack_check_type flag_stack_check = NO_STACK_CHECK @@ -291,6 +291,9 @@ Driver Alias(no-canonical-prefixes) -no-standard-libraries Driver Alias(nostdlib) +-no-sysroot-suffix +Driver Var(no_sysroot_suffix) + -no-warnings Common Alias(w) @@ -307,7 +310,7 @@ Common Driver Joined Alias(o) MissingArgError(missing filename after %qs) Driver Alias(pass-exit-codes) -pedantic -Common Alias(pedantic) +Common Alias(Wpedantic) -pedantic-errors Common Alias(pedantic-errors) @@ -345,6 +348,9 @@ Driver Alias(print-multi-lib) -print-multi-os-directory Driver Alias(print-multi-os-directory) +-print-multiarch +Driver Alias(print-multiarch) + -print-prog-name Driver Separate Alias(print-prog-name=) @@ -446,6 +452,10 @@ Ofast Common Optimization Optimize for speed disregarding exact standards compliance +Og +Common Optimization +Optimize for debugging experience rather than speed or size + Q Driver @@ -567,8 +577,7 @@ Common Var(warn_unsafe_loop_optimizations) Warning Warn if the loop cannot be optimized due to nontrivial assumptions. Wmissing-noreturn -Common Var(warn_missing_noreturn) Warning -Warn about functions which might be candidates for __attribute__((noreturn)) +Common Alias(Wsuggest-attribute=noreturn) Woverflow Common Var(warn_overflow) Init(1) Warning @@ -582,6 +591,10 @@ Wpadded Common Var(warn_padded) Warning Warn when padding is required to align structure members +Wpedantic +Common Var(pedantic) Warning +Issue warnings needed for strict compliance to the standard + Wshadow Common Var(warn_shadow) Warning Warn when one local variable shadows another @@ -599,7 +612,7 @@ Common Warning Warn about code which might break strict aliasing rules Wstrict-aliasing= -Common Joined RejectNegative UInteger Var(warn_strict_aliasing) Init(-1) Warning +Common Joined RejectNegative UInteger Var(warn_strict_aliasing) Warning Warn about code which might break strict aliasing rules Wstrict-overflow @@ -607,7 +620,7 @@ Common Warning Warn about optimizations that assume that signed overflow is undefined Wstrict-overflow= -Common Joined RejectNegative UInteger Var(warn_strict_overflow) Init(-1) Warning +Common Joined RejectNegative UInteger Var(warn_strict_overflow) Warning Warn about optimizations that assume that signed overflow is undefined Wsuggest-attribute=const @@ -622,18 +635,6 @@ Wsuggest-attribute=noreturn Common Var(warn_suggest_attribute_noreturn) Warning Warn about functions which might be candidates for __attribute__((noreturn)) -Wswitch -Common Var(warn_switch) Warning -Warn about enumerated switches, with no default, missing a case - -Wswitch-default -Common Var(warn_switch_default) Warning -Warn about enumerated switches missing a \"default:\" statement - -Wswitch-enum -Common Var(warn_switch_enum) Warning -Warn about all enumerated switches missing a specific case - Wsystem-headers Common Var(warn_system_headers) Warning Do not suppress warnings from system headers @@ -643,15 +644,15 @@ Common Var(warn_trampolines) Warning Warn whenever a trampoline is generated Wtype-limits -Common Var(warn_type_limits) Init(-1) Warning +Common Var(warn_type_limits) Warning EnabledBy(Wextra) Warn if a comparison is always true or always false due to the limited range of the data type Wuninitialized -Common Var(warn_uninitialized) Init(-1) Warning +Common Var(warn_uninitialized) Warning EnabledBy(Wextra) Warn about uninitialized automatic variables Wmaybe-uninitialized -Common Var(warn_maybe_uninitialized) Warning +Common Var(warn_maybe_uninitialized) Warning EnabledBy(Wuninitialized) Warn about maybe uninitialized automatic variables Wunreachable-code @@ -663,31 +664,31 @@ Common Var(warn_unused) Init(0) Warning Enable all -Wunused- warnings Wunused-but-set-parameter -Common Var(warn_unused_but_set_parameter) Init(-1) Warning +Common Var(warn_unused_but_set_parameter) Warning EnabledBy(Wunused && Wextra) Warn when a function parameter is only set, otherwise unused Wunused-but-set-variable -Common Var(warn_unused_but_set_variable) Init(-1) Warning +Common Var(warn_unused_but_set_variable) Warning EnabledBy(Wunused) Warn when a variable is only set, otherwise unused Wunused-function -Common Var(warn_unused_function) Init(-1) Warning +Common Var(warn_unused_function) Warning EnabledBy(Wunused) Warn when a function is unused Wunused-label -Common Var(warn_unused_label) Init(-1) Warning +Common Var(warn_unused_label) Warning EnabledBy(Wunused) Warn when a label is unused Wunused-parameter -Common Var(warn_unused_parameter) Init(-1) Warning +Common Var(warn_unused_parameter) Warning EnabledBy(Wunused && Wextra) Warn when a function parameter is unused Wunused-value -Common Var(warn_unused_value) Init(-1) Warning +Common Var(warn_unused_value) Warning EnabledBy(Wunused) Warn when an expression value is unused Wunused-variable -Common Var(warn_unused_variable) Init(-1) Warning +Common Var(warn_unused_variable) Warning EnabledBy(Wunused) Warn when a variable is unused Wcoverage-mismatch @@ -788,6 +789,8 @@ Driver Undocumented ; argument. ; First selectable in G++ 4.7. ; +; 7: The version of the ABI that treats nullptr_t as a builtin type. +; First selectable in G++ 4.8. ; Additional positive integers will be assigned as new versions of ; the ABI become the default version of the ABI. fabi-version= @@ -837,6 +840,10 @@ fargument-noalias-anything Common Ignore Does nothing. Preserved for backward compatibility. +faddress-sanitizer +Common Report Var(flag_asan) +Enable AddressSanitizer, a memory error detector + fasynchronous-unwind-tables Common Report Var(flag_asynchronous_unwind_tables) Optimization Generate unwind tables that are exact at each instruction boundary @@ -961,7 +968,7 @@ Common Joined RejectNegative Var(common_deferred_options) Defer Map one directory name to another in debug information fdebug-types-section -Common Report Var(flag_debug_types_section) Init(1) +Common Report Var(flag_debug_types_section) Init(0) Output .debug_types section when using DWARF v4 debuginfo. ; Nonzero for -fdefer-pop: don't pop args after each function call @@ -974,6 +981,10 @@ fdelayed-branch Common Report Var(flag_delayed_branch) Optimization Attempt to fill delay slots of branch instructions +fdelete-dead-exceptions +Common Report Var(flag_delete_dead_exceptions) Init(0) +Delete dead instructions that may throw exceptions + fdelete-null-pointer-checks Common Report Var(flag_delete_null_pointer_checks) Init(1) Optimization Delete useless null pointer checks @@ -999,6 +1010,10 @@ Enum(diagnostic_prefixing_rule) String(once) Value(DIAGNOSTICS_SHOW_PREFIX_ONCE) EnumValue Enum(diagnostic_prefixing_rule) String(every-line) Value(DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE) +fdiagnostics-show-caret +Common Var(flag_diagnostics_show_caret) Init(1) +Show the source line with a caret indicating the column + fdiagnostics-show-option Common Var(flag_diagnostics_show_option) Init(1) Amend appropriate diagnostic messages with the command line option that controls them @@ -1177,6 +1192,11 @@ fgraphite-identity Common Report Var(flag_graphite_identity) Optimization Enable Graphite Identity transformation +fhoist-adjacent-loads +Common Report Var(flag_hoist_adjacent_loads) Optimization +Enable hoisting adjacent loads to encourage generating conditional move +instructions + floop-parallelize-all Common Report Var(flag_loop_parallelize_all) Optimization Mark all loops as parallel @@ -1198,8 +1218,12 @@ Common Report Var(flag_tm) Enable support for GNU transactional memory floop-flatten -Common Report Var(flag_loop_flatten) Optimization -Enable Loop Flattening transformation +Common Ignore +Does nothing. Preserved for backward compatibility. + +floop-nest-optimize +Common Report Var(flag_loop_optimize_isl) Optimization +Enable the ISL based loop nest optimizer fstrict-volatile-bitfields Common Report Var(flag_strict_volatile_bitfields) Init(-1) @@ -1225,6 +1249,22 @@ fif-conversion2 Common Report Var(flag_if_conversion2) Optimization Perform conversion of conditional jumps to conditional execution +fstack-reuse= +Common Joined RejectNegative Enum(stack_reuse_level) Var(flag_stack_reuse) Init(SR_ALL) +-fstack-reuse=[all|named_vars|none] Set stack reuse level for local variables. + +Enum +Name(stack_reuse_level) Type(enum stack_reuse_level) UnknownError(unknown Stack Reuse Level %qs) + +EnumValue +Enum(stack_reuse_level) String(all) Value(SR_ALL) + +EnumValue +Enum(stack_reuse_level) String(named_vars) Value(SR_NAMED_VARS) + +EnumValue +Enum(stack_reuse_level) String(none) Value(SR_NONE) + ftree-loop-if-convert Common Report Var(flag_tree_loop_if_convert) Init(-1) Optimization Convert conditional jumps in innermost loops to branchless equivalents @@ -1245,26 +1285,23 @@ findirect-inlining Common Report Var(flag_indirect_inlining) Perform indirect inlining -; Nonzero means that functions declared `inline' will be treated -; as `static'. Prevents generation of zillions of copies of unused -; static inline functions; instead, `inlines' are written out -; only when actually used. Used in conjunction with -g. Also -; does the right thing with #pragma interface. +; General flag to enable inlining. Specifying -fno-inline will disable +; all inlining apart from always-inline functions. finline -Common Report Var(flag_no_inline,0) Init(0) -Pay attention to the \"inline\" keyword +Common Report Var(flag_no_inline,0) Init(0) Optimization +Enable inlining of function declared \"inline\", disabling disables all inlining finline-small-functions Common Report Var(flag_inline_small_functions) Optimization -Integrate simple functions into their callers when code size is known to not growth +Integrate functions into their callers when code size is known not to grow finline-functions Common Report Var(flag_inline_functions) Optimization -Integrate simple functions into their callers +Integrate functions not declared \"inline\" into their callers when profitable finline-functions-called-once Common Report Var(flag_inline_functions_called_once) Optimization -Integrate functions called once into their callers +Integrate functions only required by their single caller finline-limit- Common RejectNegative Joined Alias(finline-limit=) @@ -1314,9 +1351,8 @@ Common Report Var(flag_ipa_reference) Init(0) Optimization Discover readonly and non addressable static variables fipa-matrix-reorg -Common Report Var(flag_ipa_matrix_reorg) Optimization -Perform matrix layout flattening and transposing based -on profiling information. +Common Ignore +Does nothing. Preserved for backward compatibility. fipa-struct-reorg Common Ignore @@ -1351,6 +1387,11 @@ Enum(ira_region) String(all) Value(IRA_REGION_ALL) EnumValue Enum(ira_region) String(mixed) Value(IRA_REGION_MIXED) +fira-hoist-pressure +Common Report Var(flag_ira_hoist_pressure) Init(1) Optimization +Use IRA based register pressure calculation +in RTL hoist optimizations. + fira-loop-pressure Common Report Var(flag_ira_loop_pressure) Use IRA based register pressure calculation @@ -1402,12 +1443,16 @@ Link-time optimization with number of parallel jobs or jobserver. flto-partition=1to1 Common Var(flag_lto_partition_1to1) -Partition functions and vars at linktime based on object files they originate from +Partition symbols and vars at linktime based on object files they originate from flto-partition=balanced Common Var(flag_lto_partition_balanced) Partition functions and vars at linktime into approximately same sized buckets +flto-partition=max +Common Var(flag_lto_partition_max) +Put every symbol into separate partition + flto-partition=none Common Var(flag_lto_partition_none) Disable partioning and streaming @@ -1418,7 +1463,7 @@ Common Joined RejectNegative UInteger Var(flag_lto_compression_level) Init(-1) -flto-compression-level= Use zlib compression level for IL flto-report -Common Report Var(flag_lto_report) Init(0) Optimization +Common Report Var(flag_lto_report) Init(0) Report various link-time optimization statistics fmath-errno @@ -1433,6 +1478,10 @@ fmem-report Common Report Var(mem_report) Report on permanent memory allocation +fmem-report-wpa +Common Report Var(mem_report_wpa) +Report on permanent memory allocation in WPA only + ; This will attempt to merge constant section constants, if 1 only ; string constants and constants from constant pool, if 2 also constant ; variables. @@ -1484,6 +1533,14 @@ fomit-frame-pointer Common Report Var(flag_omit_frame_pointer) Optimization When possible do not generate stack frames +fopt-info +Common Report Var(flag_opt_info) Optimization +Enable all optimization info dumps on stderr + +fopt-info- +Common Joined RejectNegative Var(common_deferred_options) Defer +-fopt-info[-=filename] Dump compiler optimization details + foptimize-register-move Common Report Var(flag_regmove) Optimization Do the full register move optimization pass @@ -1529,19 +1586,19 @@ Common Report Var(flag_peephole2) Optimization Enable an RTL peephole pass before sched2 fPIC -Common Report Var(flag_pic,2) +Common Report Var(flag_pic,2) Negative(fPIE) Generate position-independent code if possible (large mode) fPIE -Common Report Var(flag_pie,2) +Common Report Var(flag_pie,2) Negative(fpic) Generate position-independent code for executables if possible (large mode) fpic -Common Report Var(flag_pic,1) +Common Report Var(flag_pic,1) Negative(fpie) Generate position-independent code if possible (small mode) fpie -Common Report Var(flag_pie,1) +Common Report Var(flag_pie,1) Negative(fPIC) Generate position-independent code for executables if possible (small mode) fplugin= @@ -1597,6 +1654,10 @@ fprofile-values Common Report Var(flag_profile_values) Insert code to profile values of expressions +fprofile-report +Common Report Var(profile_report) +Report on consistency of profile + frandom-seed Common Var(common_deferred_options) Defer @@ -1859,6 +1920,10 @@ fstrict-overflow Common Report Var(flag_strict_overflow) Treat signed overflow as undefined +fsync-libcalls +Common Report Var(flag_sync_libcalls) Init(1) +Implement __atomic operations via libcalls to legacy __sync functions + fsyntax-only Common Report Var(flag_syntax_only) Check for syntax errors, then stop @@ -1929,6 +1994,14 @@ ftree-ch Common Report Var(flag_tree_ch) Optimization Enable loop header copying on trees +ftree-coalesce-inlined-vars +Common Report Var(flag_ssa_coalesce_vars,1) Init(2) RejectNegative Optimization +Enable coalescing of copy-related user variables that are inlined + +ftree-coalesce-vars +Common Report Var(flag_ssa_coalesce_vars,2) Optimization +Enable coalescing of all copy-related user variables + ftree-copyrename Common Report Var(flag_tree_copyrename) Optimization Replace SSA temporaries with better names in copies @@ -2013,6 +2086,10 @@ ftree-pre Common Report Var(flag_tree_pre) Optimization Enable SSA-PRE optimization on trees +ftree-partial-pre +Common Report Var(flag_tree_partial_pre) Optimization +In SSA-PRE optimization on trees, enable partial-partial redundancy elimination + ftree-pta Common Report Var(flag_tree_pta) Init(1) Optimization Perform function-local points-to analysis on trees. @@ -2029,6 +2106,10 @@ ftree-sink Common Report Var(flag_tree_sink) Optimization Enable SSA code sinking on trees +ftree-slsr +Common Report Var(flag_tree_slsr) Optimization +Perform straight-line strength reduction + ftree-sra Common Report Var(flag_tree_sra) Optimization Perform scalar replacement of aggregates @@ -2115,6 +2196,10 @@ fvar-tracking-assignments-toggle Common Report Var(flag_var_tracking_assignments_toggle) Optimization Toggle -fvar-tracking-assignments +; Positive if we should track uninitialized variables, negative if +; we should run the var-tracking pass only to discard debug +; annotations. When flag_var_tracking_uninit == AUTODETECT_VALUE it +; will be set according to flag_var_tracking. fvar-tracking-uninit Common Report Var(flag_var_tracking_uninit) Optimization Perform variable tracking and also tag variables that are uninitialized @@ -2123,6 +2208,10 @@ ftree-vectorize Common Report Var(flag_tree_vectorize) Optimization Enable loop vectorization on trees +ftree-vectorizer-verbose= +Common RejectNegative Joined UInteger Var(common_deferred_options) Defer +-ftree-vectorizer-verbose= This switch is deprecated. Use -fopt-info instead. + ftree-slp-vectorize Common Report Var(flag_tree_slp_vectorize) Init(2) Optimization Enable basic block vectorization (SLP) on trees @@ -2135,10 +2224,6 @@ ftree-vect-loop-version Common Report Var(flag_tree_vect_loop_version) Init(1) Optimization Enable loop versioning when doing loop vectorization on trees -ftree-vectorizer-verbose= -Common RejectNegative Joined UInteger --ftree-vectorizer-verbose= Set the verbosity level of the vectorizer - ftree-scev-cprop Common Report Var(flag_tree_scev_cprop) Init(1) Optimization Enable copy propagation of scalar-evolution information. @@ -2205,21 +2290,37 @@ Common JoinedOrMissing Negative(gdwarf-) Generate debug information in COFF format gdwarf- -Common Joined UInteger Var(dwarf_version) Init(2) Negative(gstabs) +Common Joined UInteger Var(dwarf_version) Init(4) Negative(gstabs) Generate debug information in DWARF v2 (or later) format ggdb Common JoinedOrMissing Generate debug information in default extended format +gno-pubnames +Common RejectNegative Var(debug_generate_pub_sections, 0) Init(-1) +Don't generate DWARF pubnames and pubtypes sections. + +gpubnames +Common RejectNegative Var(debug_generate_pub_sections, 1) +Generate DWARF pubnames and pubtypes sections. + gno-record-gcc-switches -Common RejectNegative Var(dwarf_record_gcc_switches,0) Init(0) +Common RejectNegative Var(dwarf_record_gcc_switches,0) Init(1) Don't record gcc command line switches in DWARF DW_AT_producer. grecord-gcc-switches Common RejectNegative Var(dwarf_record_gcc_switches,1) Record gcc command line switches in DWARF DW_AT_producer. +gno-split-dwarf +Common Driver RejectNegative Var(dwarf_split_debug_info,0) Init(0) +Don't generate debug information in separate .dwo files + +gsplit-dwarf +Common Driver RejectNegative Var(dwarf_split_debug_info,1) +Generate debug information in separate .dwo files + gstabs Common JoinedOrMissing Negative(gstabs+) Generate debug information in STABS format @@ -2229,7 +2330,7 @@ Common JoinedOrMissing Negative(gvms) Generate debug information in extended STABS format gno-strict-dwarf -Common RejectNegative Var(dwarf_strict,0) Init(-1) +Common RejectNegative Var(dwarf_strict,0) Init(0) Emit DWARF additions beyond selected version gstrict-dwarf @@ -2259,6 +2360,10 @@ iplugindir= Common Joined Var(plugindir_string) Init(0) -iplugindir= Set to be the default plugin directory +imultiarch +Common Joined Separate RejectDriver Var(imultiarch) Init(0) +-imultiarch Set to be the multiarch include subdirectory + l Driver Joined Separate @@ -2289,8 +2394,7 @@ pass-exit-codes Driver Var(pass_exit_codes) pedantic -Common Var(pedantic) -Issue warnings needed for strict compliance to the standard +Common Alias(Wpedantic) pedantic-errors Common Var(flag_pedantic_errors) @@ -2316,6 +2420,9 @@ Driver Var(print_multi_lib) print-multi-os-directory Driver Var(print_multi_os_directory) + +print-multiarch +Driver Var(print_multiarch) print-prog-name= Driver JoinedOrMissing Var(print_prog_name) @@ -2409,6 +2516,9 @@ static-libgo Driver ; Documented for Go, but always accepted by driver. +static-libasan +Driver + symbolic Driver