X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fcommon.opt;h=f4523db1cb52516833ee747440a82710cfc9350f;hp=806bd1f282d7db90cd4e8266296eeb6b8c91c8c7;hb=295e1243f9aa75cb43de3934e35dcd11d3adac74;hpb=21cd990df370bfeb0ed410b024a41176014959ad diff --git a/gcc/common.opt b/gcc/common.opt index 806bd1f282d..f4523db1cb5 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -23,43 +23,397 @@ ; Please try to keep this file in ASCII collating order. +Variable +int target_flags + +Variable +int optimize + +Variable +int optimize_size + +; 0 means straightforward implementation of complex divide acceptable. +; 1 means wide ranges of inputs must work for complex divide. +; 2 means C99-like requirements for complex multiply and divide. +Variable +int flag_complex_method = 1 + +; Nonzero if subexpressions must be evaluated from left-to-right. +Variable +int flag_evaluation_order = 0 + +; Set the default region and algorithm for the integrated register +; allocator. + +Variable +enum ira_algorithm flag_ira_algorithm = IRA_ALGORITHM_CB + +Variable +enum ira_region flag_ira_region = IRA_REGION_MIXED + +; Language specific warning pass for unused results. +Variable +bool flag_warn_unused_result = false + +Variable +int *param_values + +; Floating-point contraction mode, fast by default. +Variable +enum fp_contract_mode flag_fp_contract_mode = FP_CONTRACT_FAST + +; The excess precision specified on the command line, or defaulted by +; the front end. +Variable +enum excess_precision flag_excess_precision_cmdline = EXCESS_PRECISION_DEFAULT + +; Nonzero if we should write GIMPLE bytecode for link-time optimization. +Variable +int flag_generate_lto + +; True to warn about any objects definitions whose size is larger +; than N bytes. Also want about function definitions whose returned +; values are larger than N bytes, where N is 'larger_than_size'. +Variable +bool warn_larger_than + +Variable +HOST_WIDE_INT larger_than_size + +; True to warn about any function whose frame size is larger +; than N bytes. +Variable +bool warn_frame_larger_than + +Variable +HOST_WIDE_INT frame_larger_than_size + +; Nonzero means we should be saving declaration info into a .X file. +Variable +int flag_gen_aux_info = 0 + +; Nonzero if we are compiling code for a shared library, zero for +; executable. +Variable +int flag_shlib + +; The default visibility for all symbols (unless overridden). +Variable +enum symbol_visibility default_visibility = VISIBILITY_DEFAULT + +; Set to the default thread-local storage (tls) model to use. +Variable +enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC + +; These two are really VEC(char_p,heap) *. + +Variable +void *flag_instrument_functions_exclude_functions + +Variable +void *flag_instrument_functions_exclude_files + +; Generic structs (e.g. templates not explicitly specialized) +; may not have a compilation unit associated with them, and so +; may need to be treated differently from ordinary structs. +; +; Structs only handled by reference (indirectly), will also usually +; not need as much debugging information. + +Variable +enum debug_struct_file debug_struct_ordinary[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } + +Variable +enum debug_struct_file debug_struct_generic[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } + +; True if we should exit after parsing options. +Variable +bool exit_after_options + +; Type(s) of debugging information we are producing (if any). See +; flag-types.h for the definitions of the different possible types of +; debugging information. +Variable +enum debug_info_type write_symbols = NO_DEBUG + +; Level of debugging information we are producing. See flag-types.h +; for the definitions of the different possible levels. +Variable +enum debug_info_levels debug_info_level = DINFO_LEVEL_NONE + +; Nonzero means use GNU-only extensions in the generated symbolic +; debugging information. Currently, this only has an effect when +; write_symbols is set to DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. +Variable +bool use_gnu_debug_info_extensions + +; Original value of maximum field alignment in bytes, specified via +; -fpack-struct=. +Variable +unsigned int initial_max_fld_align = TARGET_DEFAULT_PACK_STRUCT + +Variable +enum vect_verbosity_levels user_vect_verbosity_level = MAX_VERBOSITY_LEVEL + +; -dA causes debug commentary information to be produced in +; the generated assembly code (to make it more readable). This option +; is generally only of use to those who actually need to read the +; generated assembly code (perhaps while debugging the compiler itself). +; Currently, this switch is only used by dwarf2out.c; however, it is intended +; to be a catchall for printing debug information in the assembler file. +Variable +int flag_debug_asm + +; -dP causes the rtl to be emitted as a comment in assembly. +Variable +int flag_dump_rtl_in_asm + +; Whether -da was passed (used only in handle_common_deferred_options). +Variable +bool flag_dump_all_passed + +; Other flags saying which kinds of debugging dump have been requested. + +Variable +int rtl_dump_and_exit + +Variable +int flag_print_asm_name + +Variable +enum graph_dump_types graph_dump_format = no_graph + +; Which options have been printed by --help. +Variable +char *help_printed + +; The number of columns for --help output. +Variable +unsigned int help_columns + +; Whether this options structure has been through finish_options +Variable +bool flag_opts_finished + +### +Driver + +-assemble +Driver Alias(S) + +-compile +Driver Alias(c) + +-coverage +Driver Alias(coverage) + +-debug +Common Alias(g) + +-dump +Common Separate Alias(d) + +-dump= +Common Joined Alias(d) + +-dumpbase +Common Separate Alias(dumpbase) + +-dumpdir +Common Separate Alias(dumpdir) + +-entry +Driver Separate Alias(e) + +-entry= +Driver Joined Alias(e) + +-extra-warnings +Common Warning Alias(Wextra) + +-for-assembler +Driver Separate Alias(Xassembler) + +-for-assembler= +Driver JoinedOrMissing Alias(Xassembler) + +-for-linker +Driver Separate Alias(Xlinker) + +-for-linker= +Driver JoinedOrMissing Alias(Xlinker) + +-force-link +Driver Separate Alias(u) + +-force-link= +Driver Joined Alias(u) + -help -Common +Common Driver Var(help_flag) Display this information -help= -Common Report Joined +Common Driver Report Joined --help= Display descriptions of a specific class of options. is one or more of optimizers, target, warnings, undocumented, params +-language +Driver Separate Alias(x) + +-language= +Driver Joined Alias(x) + +-library-directory +Driver Separate Alias(L) + +-library-directory= +Driver Joined Alias(L) + +-no-canonical-prefixes +Driver Alias(no-canonical-prefixes) + +-no-standard-libraries +Driver Alias(nostdlib) + +-no-warnings +Common Alias(w) + +-optimize +Common Alias(O) + +-output +Common Driver Separate Alias(o) MissingArgError(missing filename after %qs) + +-output= +Common Driver Joined Alias(o) MissingArgError(missing filename after %qs) + +-pass-exit-codes +Driver Alias(pass-exit-codes) + +-pedantic +Common Alias(pedantic) + +-pedantic-errors +Common Alias(pedantic-errors) + +-pie +Common Alias(pie) + +-pipe +Driver Alias(pipe) + +-prefix +Driver Separate Alias(B) + +-prefix= +Driver JoinedOrMissing Alias(B) + +-preprocess +Driver Alias(E) + +-print-file-name +Driver Separate Alias(print-file-name=) + +-print-file-name= +Driver JoinedOrMissing Alias(print-file-name=) + +-print-libgcc-file-name +Driver Alias(print-libgcc-file-name) + +-print-multi-directory +Driver Alias(print-multi-directory) + +-print-multi-lib +Driver Alias(print-multi-lib) + +-print-multi-os-directory +Driver Alias(print-multi-os-directory) + +-print-prog-name +Driver Separate Alias(print-prog-name=) + +-print-prog-name= +Driver JoinedOrMissing Alias(print-prog-name=) + +-print-search-dirs +Driver Alias(print-search-dirs) + +-print-sysroot +Driver Alias(print-sysroot) + +-print-sysroot-headers-suffix +Driver Alias(print-sysroot-headers-suffix) + +-profile +Common Alias(p) + +-save-temps +Driver Alias(save-temps) + +-shared +Common Alias(shared) + +-specs +Driver Separate Alias(specs=) + +-specs= +Driver Joined Alias(specs=) + +-static +Driver Alias(static) + +-symbolic +Driver Alias(symbolic) + -target-help -Common +Common Driver Alias for --help=target -;; The following four entries are to work around the gcc driver -;; program's insatiable desire to turn options starting with a -;; double dash (--) into options starting with a dash f (-f). +-time +Driver Alias(time) + +-verbose +Driver Alias(v) + +;; The driver used to convert options such as --help into forms such +;; as -fhelp; the following four entries are for compatibility with +;; any direct uses of those (undocumented) -f forms fhelp -Common Var(help_flag) +Common Driver Alias(-help) fhelp= -Common Joined +Common Driver Joined Alias(-help=) ftarget-help -Common +Common Driver Alias(-target-help) fversion -Common +Common Driver Alias(-version) -param Common Separate --param = Set parameter to value. See below for a complete list of parameters +-param= +Common Joined Alias(-param) + +-sysroot +Driver Separate Alias(-sysroot=) + +-sysroot= +Driver JoinedOrMissing + -version -Common +Common Driver + +B +Driver Joined Separate + +E +Driver -G -Common Joined Separate UInteger --G Put global and static data smaller than bytes into a special section (on some targets) +L +Driver Joined Separate O Common JoinedOrMissing Optimization @@ -69,10 +423,41 @@ Os Common Optimization Optimize for space rather than speed +Ofast +Common Optimization +Optimize for speed disregarding exact standards compliance + +R +Driver Joined Separate + +S +Driver + +T +Driver Joined Separate + +Tbss +Driver Separate + +Tdata +Driver Separate + +Ttext +Driver Separate + W -Common RejectNegative Var(extra_warnings) Warning +Common RejectNegative Warning Alias(Wextra) This switch is deprecated; use -Wextra instead +Wa, +Driver JoinedOrMissing + +Wl, +Driver JoinedOrMissing + +Wp, +Driver JoinedOrMissing + Waggregate-return Common Var(warn_aggregate_return) Warning Warn about returning structures, unions or arrays @@ -126,7 +511,7 @@ Common Var(warn_inline) Warning Warn when an inlined function cannot be inlined Wlarger-than- -Common RejectNegative Joined UInteger Warning Undocumented +Common RejectNegative Joined Warning Undocumented Alias(Wlarger-than=) Wlarger-than= Common RejectNegative Joined UInteger Warning @@ -169,7 +554,7 @@ Common Warning Warn about code which might break strict aliasing rules Wstrict-aliasing= -Common Joined UInteger Var(warn_strict_aliasing) Init(-1) Warning +Common Joined RejectNegative UInteger Var(warn_strict_aliasing) Init(-1) Warning Warn about code which might break strict aliasing rules Wstrict-overflow @@ -177,7 +562,7 @@ Common Warning Warn about optimizations that assume that signed overflow is undefined Wstrict-overflow= -Common Joined UInteger Var(warn_strict_overflow) Init(-1) Warning +Common Joined RejectNegative UInteger Var(warn_strict_overflow) Init(-1) Warning Warn about optimizations that assume that signed overflow is undefined Wsuggest-attribute=const @@ -188,6 +573,10 @@ Wsuggest-attribute=pure Common Var(warn_suggest_attribute_pure) Warning Warn about functions which might be candidates for __attribute__((pure)) +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 @@ -204,6 +593,10 @@ Wsystem-headers Common Var(warn_system_headers) Warning Do not suppress warnings from system headers +Wtrampolines +Common Var(warn_trampolines) Warning +Warn whenever a trampoline is generated + Wtype-limits Common Var(warn_type_limits) Init(-1) Warning Warn if a comparison is always true or always false due to the limited range of the data type @@ -213,7 +606,7 @@ Common Var(warn_uninitialized) Init(-1) Warning Warn about uninitialized automatic variables Wunreachable-code -Common +Common Ignore Does nothing. Preserved for backward compatibility. Wunused @@ -252,31 +645,58 @@ Wcoverage-mismatch Common Var(warn_coverage_mismatch) Init(1) Warning Warn in case profiles in -fprofile-use do not match +Xassembler +Driver Separate + +Xlinker +Driver Separate + +Xpreprocessor +Driver Separate + aux-info -Common Separate +Common Separate Var(aux_info_file_name) -aux-info Emit declaration information into aux-info= -Common Joined +Common Joined Alias(aux-info) auxbase -Common Separate +Common Separate RejectDriver Var(aux_base_name) auxbase-strip -Common Separate +Common Separate RejectDriver + +coverage +Driver + +c +Driver d Common Joined -d Enable dumps from specific passes of the compiler dumpbase -Common Separate +Common Separate Var(dump_base_name) -dumpbase Set the file basename to be used for dumps dumpdir -Common Separate +Common Separate Var(dump_dir_name) -dumpdir Set the directory name to be used for dumps +dumpmachine +Driver + +dumpspecs +Driver + +dumpversion +Driver + +e +Driver Joined Separate + ; The version of the C++ ABI in use. The following values are allowed: ; ; 0: The version of the ABI believed most conformant with the C++ ABI @@ -297,50 +717,50 @@ Common Separate ; Additional positive integers will be assigned as new versions of ; the ABI become the default version of the ABI. fabi-version= -Common Joined UInteger Var(flag_abi_version) Init(2) +Common Joined RejectNegative UInteger Var(flag_abi_version) Init(2) falign-functions Common Report Var(align_functions,0) Optimization UInteger Align the start of functions falign-functions= -Common RejectNegative Joined UInteger +Common RejectNegative Joined UInteger Var(align_functions) falign-jumps Common Report Var(align_jumps,0) Optimization UInteger Align labels which are only reached by jumping falign-jumps= -Common RejectNegative Joined UInteger +Common RejectNegative Joined UInteger Var(align_jumps) falign-labels Common Report Var(align_labels,0) Optimization UInteger Align all labels falign-labels= -Common RejectNegative Joined UInteger +Common RejectNegative Joined UInteger Var(align_labels) falign-loops -Common Report Var(align_loops) Optimization UInteger +Common Report Var(align_loops,0) Optimization UInteger Align the start of loops falign-loops= -Common RejectNegative Joined UInteger +Common RejectNegative Joined UInteger Var(align_loops) fargument-alias -Common +Common Ignore Does nothing. Preserved for backward compatibility. fargument-noalias -Common +Common Ignore Does nothing. Preserved for backward compatibility. fargument-noalias-global -Common +Common Ignore Does nothing. Preserved for backward compatibility. fargument-noalias-anything -Common +Common Ignore Does nothing. Preserved for backward compatibility. fasynchronous-unwind-tables @@ -380,11 +800,11 @@ Common Report Var(flag_btr_bb_exclusive) Optimization Restrict target load migration not to re-use registers in any basic block fcall-saved- -Common Joined RejectNegative +Common Joined RejectNegative Var(common_deferred_options) Defer -fcall-saved- Mark as being preserved across functions fcall-used- -Common Joined RejectNegative +Common Joined RejectNegative Var(common_deferred_options) Defer -fcall-used- Mark as being corrupted by function calls ; Nonzero for -fcaller-saves: allocate values in regs that need to @@ -398,16 +818,24 @@ fcheck-data-deps Common Report Var(flag_check_data_deps) Compare the results of several data dependence analyzers. +fcombine-stack-adjustments +Common Report Var(flag_combine_stack_adjustments) Optimization +Looks for opportunities to reduce stack adjustments and stack references. + fcommon Common Report Var(flag_no_common,0) Optimization Do not put uninitialized globals in the common section +fcompare-debug +Driver +; Converted by the driver to -fcompare-debug= options. + fcompare-debug= -Common JoinedOrMissing RejectNegative Var(flag_compare_debug_opt) +Common Driver JoinedOrMissing RejectNegative Var(flag_compare_debug_opt) -fcompare-debug[=] Compile with and without e.g. -gtoggle, and compare the final-insns dump fcompare-debug-second -Common RejectNegative Var(flag_compare_debug) +Common Driver RejectNegative Run only the second compilation of -fcompare-debug fconserve-stack @@ -427,7 +855,7 @@ Common Report Var(flag_cse_follow_jumps) Optimization When running CSE, follow jumps to their targets fcse-skip-blocks -Common +Common Ignore Does nothing. Preserved for backward compatibility. fcx-limited-range @@ -443,15 +871,15 @@ Common Report Var(flag_data_sections) Optimization Place data items into their own section fdbg-cnt-list -Common Report +Common Report Var(common_deferred_options) Defer List all available debugging counters with their limits and counts. fdbg-cnt= -Common RejectNegative Joined +Common RejectNegative Joined Var(common_deferred_options) Defer -fdbg-cnt=:[,:,...] Set the debug counter limit. fdebug-prefix-map= -Common Joined RejectNegative +Common Joined RejectNegative Var(common_deferred_options) Defer Map one directory name to another in debug information ; Nonzero for -fdefer-pop: don't pop args after each function call @@ -477,23 +905,30 @@ Common Var(flag_diagnostics_show_option) Init(1) Amend appropriate diagnostic messages with the command line option that controls them fdump- -Common Joined RejectNegative +Common Joined RejectNegative Var(common_deferred_options) Defer -fdump- Dump various compiler internals to a file +fdump-final-insns +Driver RejectNegative + fdump-final-insns= Common RejectNegative Joined Var(flag_dump_final_insns) -fdump-final-insns=filename Dump to filename the insns at the end of translation +fdump-go-spec= +Common RejectNegative Joined Var(flag_dump_go_spec) +-fdump-go-spec=filename Write all declarations to file as Go code + fdump-noaddr Common Report Var(flag_dump_noaddr) Suppress output of addresses in debugging dumps fdump-unnumbered -Common Report Var(flag_dump_unnumbered) VarExists +Common Report Var(flag_dump_unnumbered) Suppress output of instruction numbers, line number notes and addresses in debugging dumps fdump-unnumbered-links -Common Report Var(flag_dump_unnumbered_links) VarExists +Common Report Var(flag_dump_unnumbered_links) Suppress output of previous and next insn numbers in debugging dumps fdwarf2-cfi-asm @@ -548,7 +983,7 @@ Common Report Var(flag_finite_math_only) Optimization Assume no NaNs or infinities are generated ffixed- -Common Joined RejectNegative +Common Joined RejectNegative Var(common_deferred_options) Defer -ffixed- Mark as being unavailable to the compiler ffloat-store @@ -556,13 +991,17 @@ Common Report Var(flag_float_store) Optimization Don't allocate floats and doubles in extended-precision registers fforce-addr -Common +Common Ignore Does nothing. Preserved for backward compatibility. fforward-propagate Common Report Var(flag_forward_propagate) Optimization Perform a forward propagation pass on RTL +ffp-contract= +Common Joined RejectNegative +-ffp-contract=[off|on|fast] Perform floating-point expression contraction. + ; Nonzero means don't put addresses of constant functions in registers. ; Used for compiling the Unix kernel, where strange substitutions are ; done on the assembly output. @@ -621,6 +1060,14 @@ floop-block Common Report Var(flag_loop_block) Optimization Enable Loop Blocking transformation +floop-flatten +Common Report Var(flag_loop_flatten) Optimization +Enable Loop Flattening transformation + +fstrict-volatile-bitfields +Common Report Var(flag_strict_volatile_bitfields) Init(-1) +Force bitfield accesses to match their type width + fguess-branch-probability Common Report Var(flag_guess_branch_prob) Optimization Enable guessing of branch probabilities @@ -641,6 +1088,14 @@ fif-conversion2 Common Report Var(flag_if_conversion2) Optimization Perform conversion of conditional jumps to conditional execution +ftree-loop-if-convert +Common Report Var(flag_tree_loop_if_convert) Init(-1) Optimization +Convert conditional jumps in innermost loops to branchless equivalents + +ftree-loop-if-convert-stores +Common Report Var(flag_tree_loop_if_convert_stores) Optimization +Also if-convert conditional jumps containing memory writes + ; -finhibit-size-directive inhibits output of .size for ELF. ; This is used only for compiling crtstuff.c, ; and it may be extended to other effects @@ -675,7 +1130,7 @@ Common Report Var(flag_inline_functions_called_once) Init(1) Optimization Integrate functions called once into their callers finline-limit- -Common RejectNegative Joined UInteger +Common RejectNegative Joined Alias(finline-limit=) finline-limit= Common RejectNegative Joined UInteger @@ -717,10 +1172,6 @@ fipa-reference Common Report Var(flag_ipa_reference) Init(0) Optimization Discover readonly and non addressable static variables -fipa-type-escape -Common Report Var(flag_ipa_type_escape) Init(0) Optimization -Type based escape and alias analysis - fipa-matrix-reorg Common Report Var(flag_ipa_matrix_reorg) Optimization Perform matrix layout flattening and transposing based @@ -739,10 +1190,6 @@ fira-region= Common Joined RejectNegative -fira-region=[one|all|mixed] Set regions for IRA -fira-coalesce -Common Report Var(flag_ira_coalesce) Init(0) -Do optimistic coalescing. - fira-loop-pressure Common Report Var(flag_ira_loop_pressure) Use IRA based register pressure calculation @@ -757,7 +1204,7 @@ Common Report Var(flag_ira_share_spill_slots) Init(1) Share stack slots for spilled pseudo-registers. fira-verbose= -Common RejectNegative Joined UInteger +Common RejectNegative Joined UInteger Var(flag_ira_verbose) Init(5) -fira-verbose= Control IRA's level of diagnostic messages. fivopts @@ -781,16 +1228,32 @@ Common Report Var(flag_leading_underscore) Init(-1) Give external symbols a leading underscore floop-optimize -Common +Common Ignore Does nothing. Preserved for backward compatibility. flto -Common Var(flag_lto) +Common Enable link-time optimization. +flto= +Common RejectNegative Joined Var(flag_lto) +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 + +flto-partition=balanced +Common Var(flag_lto_partition_balanced) +Partition functions and vars at linktime into approximately same sized buckets + +flto-partition=none +Common Var(flag_lto_partition_none) +Disable partioning and streaming + ; The initial value of -1 comes from Z_DEFAULT_COMPRESSION in zlib.h. flto-compression-level= -Common Joined UInteger Var(flag_lto_compression_level) Init(-1) +Common Joined RejectNegative UInteger Var(flag_lto_compression_level) Init(-1) -flto-compression-level= Use zlib compression level for IL flto-report @@ -801,6 +1264,10 @@ fmath-errno Common Report Var(flag_errno_math) Init(1) Optimization Set errno after built-in math functions +fmax-errors= +Common Joined RejectNegative UInteger Var(flag_max_errors) +-fmax-errors= Maximum number of errors to report + fmem-report Common Report Var(mem_report) Report on permanent memory allocation @@ -813,7 +1280,7 @@ Common Report Var(flag_merge_constants,2) Init(1) Optimization Attempt to merge identical constants and constant variables fmerge-constants -Common Report Var(flag_merge_constants,1) VarExists Optimization +Common Report Var(flag_merge_constants,1) Optimization Attempt to merge identical constants across compilation units fmerge-debug-strings @@ -841,7 +1308,7 @@ Common RejectNegative Report Var(flag_mudflap) Add mudflap bounds-checking instrumentation for single-threaded program fmudflapth -Common RejectNegative Report VarExists Var(flag_mudflap,2) +Common RejectNegative Report Var(flag_mudflap,2) Add mudflap bounds-checking instrumentation for multi-threaded program fmudflapir @@ -876,6 +1343,10 @@ foptimize-sibling-calls Common Report Var(flag_optimize_sibling_calls) Optimization Optimize sibling and tail recursive calls +fpartial-inlining +Common Report Var(flag_partial_inlining) +Perform partial inlining + fpre-ipa-mem-report Common Report Var(pre_ipa_mem_report) Report on memory allocation before interprocedural optimization @@ -893,7 +1364,7 @@ Common RejectNegative Joined UInteger Optimization -fpack-struct= Set initial maximum structure member alignment fpcc-struct-return -Common Report Var(flag_pcc_struct_return,1) VarExists +Common Report Var(flag_pcc_struct_return,1) Init(DEFAULT_PCC_STRUCT_RETURN) Return small aggregates in memory, not registers fpeel-loops @@ -917,19 +1388,19 @@ Common Report Var(flag_pie,2) Generate position-independent code for executables if possible (large mode) fpic -Common Report Var(flag_pic,1) VarExists +Common Report Var(flag_pic,1) Generate position-independent code if possible (small mode) fpie -Common Report Var(flag_pie,1) VarExists +Common Report Var(flag_pie,1) Generate position-independent code for executables if possible (small mode) fplugin= -Common Joined RejectNegative +Common Joined RejectNegative Var(common_deferred_options) Defer Specify a plugin to load fplugin-arg- -Common Joined RejectNegative +Common Joined RejectNegative Var(common_deferred_options) Defer -fplugin-arg--[=] Specify argument = for plugin fpredictive-commoning @@ -937,7 +1408,7 @@ Common Report Var(flag_predictive_commoning) Optimization Run predictive commoning optimization. fprefetch-loop-arrays -Common Report Var(flag_prefetch_loop_arrays) Optimization +Common Report Var(flag_prefetch_loop_arrays) Init(-1) Optimization Generate prefetch instructions, if available, for arrays in loops fprofile @@ -949,7 +1420,7 @@ Common Report Var(profile_arc_flag) Insert arc-based program profiling code fprofile-dir= -Common Joined RejectNegative +Common Joined RejectNegative Var(profile_data_prefix) Set the top-level directory for storing the profile data. The default is 'pwd'. @@ -978,10 +1449,10 @@ Common Report Var(flag_profile_values) Insert code to profile values of expressions frandom-seed -Common +Common Var(common_deferred_options) Defer frandom-seed= -Common Joined RejectNegative +Common Joined RejectNegative Var(common_deferred_options) Defer -frandom-seed= Make compile reproducible using ; This switch causes the command line that was used to create an @@ -995,7 +1466,7 @@ Common Report Var(flag_record_gcc_switches) Record gcc command line switches in the object file. freg-struct-return -Common Report Var(flag_pcc_struct_return,0) VarExists Optimization +Common Report Var(flag_pcc_struct_return,0) Optimization Return small aggregates in registers fregmove @@ -1019,11 +1490,11 @@ Common Report Var(flag_reorder_functions) Optimization Reorder functions to improve code placement frerun-cse-after-loop -Common Report Var(flag_rerun_cse_after_loop) Init(2) Optimization +Common Report Var(flag_rerun_cse_after_loop) Optimization Add a common subexpression elimination pass after loop optimizations frerun-loop-opt -Common +Common Ignore Does nothing. Preserved for backward compatibility. frounding-math @@ -1051,7 +1522,7 @@ Common Report Var(flag_schedule_speculative_load_dangerous) Optimization Allow speculative motion of more loads fsched-verbose= -Common RejectNegative Joined +Common RejectNegative Joined UInteger Var(sched_verbose_param) -fsched-verbose= Set the verbosity level of the scheduler fsched2-use-superblocks @@ -1059,7 +1530,7 @@ Common Report Var(flag_sched2_use_superblocks) Optimization If scheduling post reload, do superblock scheduling fsched2-use-traces -Common +Common Ignore Does nothing. Preserved for backward compatibility. fschedule-insns @@ -1144,11 +1615,15 @@ Common Report Var(flag_section_anchors) Optimization Access data in the same section from shared anchor points fsee -Common +Common Ignore Does nothing. Preserved for backward compatibility. +fzee +Common Report Var(flag_zee) Init(0) +Eliminate redundant zero extensions on targets that support implicit extensions. + fshow-column -Common C ObjC C++ ObjC++ Report Var(flag_show_column) Init(1) +Common Report Var(flag_show_column) Init(1) Show column numbers in diagnostics, when available. Default on fsignaling-nans @@ -1167,6 +1642,10 @@ fsplit-ivs-in-unroller Common Report Var(flag_split_ivs_in_unroller) Init(1) Optimization Split lifetimes of induction variables when loops are unrolled +fsplit-stack +Common Report Var(flag_split_stack) Init(-1) +Generate discontiguous stack frames + fsplit-wide-types Common Report Var(flag_split_wide_types) Optimization Split wide types into independent registers @@ -1180,18 +1659,18 @@ Common Report RejectNegative Joined -fstack-check=[no|generic|specific] Insert stack checking code into the program fstack-check -Common Report +Common Alias(fstack-check=, specific, no) Insert stack checking code into the program. Same as -fstack-check=specific fstack-limit -Common +Common Var(common_deferred_options) Defer fstack-limit-register= -Common RejectNegative Joined +Common RejectNegative Joined Var(common_deferred_options) Defer -fstack-limit-register= Trap if the stack goes past fstack-limit-symbol= -Common RejectNegative Joined +Common RejectNegative Joined Var(common_deferred_options) Defer -fstack-limit-symbol= Trap if the stack goes past symbol fstack-protector @@ -1199,11 +1678,15 @@ Common Report Var(flag_stack_protect, 1) Use propolice as a stack protection method fstack-protector-all -Common Report RejectNegative Var(flag_stack_protect, 2) VarExists +Common Report RejectNegative Var(flag_stack_protect, 2) Use a stack protection method for every function +fstack-usage +Common RejectNegative Var(flag_stack_usage) +Output stack usage information on a per-function basis + fstrength-reduce -Common +Common Ignore Does nothing. Preserved for backward compatibility. ; Nonzero if we should do (language-dependent) alias analysis. @@ -1261,8 +1744,12 @@ ftree-ccp Common Report Var(flag_tree_ccp) Optimization Enable SSA-CCP optimization on trees +ftree-bit-ccp +Common Report Var(flag_tree_bit_ccp) Optimization +Enable SSA-BIT-CCP optimization on trees + ftree-store-ccp -Common +Common Ignore Does nothing. Preserved for backward compatibility. ftree-ch @@ -1278,7 +1765,7 @@ Common Report Var(flag_tree_copy_prop) Optimization Enable copy propagation on trees ftree-store-copy-prop -Common +Common Ignore Does nothing. Preserved for backward compatibility. ftree-cselim @@ -1313,6 +1800,10 @@ ftree-loop-distribution Common Report Var(flag_tree_loop_distribution) Optimization Enable loop distribution on trees +ftree-loop-distribute-patterns +Common Report Var(flag_tree_loop_distribute_patterns) Optimization +Enable loop distribution for patterns transformed into a library call + ftree-loop-im Common Report Var(flag_tree_loop_im) Init(1) Optimization Enable loop invariant motion on trees @@ -1330,7 +1821,7 @@ Common Report Var(flag_tree_loop_optimize) Init(1) Optimization Enable loop optimizations on tree level ftree-parallelize-loops= -Common Report Joined UInteger Var(flag_tree_parallelize_loops) Init(1) +Common Report Joined RejectNegative UInteger Var(flag_tree_parallelize_loops) Init(1) Enable automatic parallelization of loops ftree-phiprop @@ -1350,7 +1841,7 @@ Common Report Var(flag_tree_reassoc) Init(1) Optimization Enable reassociation on tree level ftree-salias -Common +Common Ignore Does nothing. Preserved for backward compatibility. ftree-sink @@ -1362,7 +1853,7 @@ Common Report Var(flag_tree_sra) Optimization Perform scalar replacement of aggregates ftree-ter -Common Report Var(flag_tree_ter) Init(1) Optimization +Common Report Var(flag_tree_ter) Optimization Replace temporary expressions in the SSA->normal pass ftree-lrs @@ -1420,16 +1911,27 @@ Just generate unwind tables for exception handling fuse-linker-plugin Common Undocumented +; Positive if we should track variables, negative if we should run +; the var-tracking pass only to discard debug annotations, zero if +; we're not to run it. When flag_var_tracking == 2 (AUTODETECT_VALUE) it +; will be set according to optimize, debug_info_level and debug_hooks +; in process_options (). fvar-tracking -Common Report Var(flag_var_tracking) VarExists Optimization +Common Report Var(flag_var_tracking) Init(2) Optimization Perform variable tracking +; Positive if we should track variables at assignments, negative if +; we should run the var-tracking pass only to discard debug +; annotations. When flag_var_tracking_assignments == +; AUTODETECT_VALUE it will be set according to flag_var_tracking. fvar-tracking-assignments -Common Report Var(flag_var_tracking_assignments) VarExists Optimization +Common Report Var(flag_var_tracking_assignments) Init(2) Optimization Perform variable tracking by annotating assignments +; Nonzero if we should toggle flag_var_tracking_assignments after +; processing options and computing its default. */ fvar-tracking-assignments-toggle -Common Report Var(flag_var_tracking_assignments_toggle) VarExists Optimization +Common Report Var(flag_var_tracking_assignments_toggle) Optimization Toggle -fvar-tracking-assignments fvar-tracking-uninit @@ -1453,7 +1955,7 @@ 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 +Common RejectNegative Joined UInteger -ftree-vectorizer-verbose= Set the verbosity level of the vectorizer ftree-scev-cprop @@ -1483,10 +1985,6 @@ fweb Common Report Var(flag_web) Init(2) Optimization Construct webs and split unrelated uses of single variable -fwhopr -Common Var(flag_whopr) -Enable partitioned link-time optimization. - ftree-builtin-call-dce Common Report Var(flag_tree_builtin_call_dce) Init(0) Optimization Enable conditional dead code elimination for builtin calls @@ -1532,7 +2030,7 @@ Common RejectNegative Var(dwarf_strict,0) Init(-1) Emit DWARF additions beyond selected version gstrict-dwarf -Common Report RejectNegative Var(dwarf_strict,1) VarExists +Common Report RejectNegative Var(dwarf_strict,1) Don't emit DWARF additions beyond selected version gtoggle @@ -1551,44 +2049,152 @@ gxcoff+ Common JoinedOrMissing Negative(gcoff) Generate debug information in extended XCOFF format +h +Driver Joined Separate + iplugindir= Common Joined Var(plugindir_string) Init(0) -iplugindir= Set to be the default plugin directory +l +Driver Joined Separate + +no-canonical-prefixes +Driver + +nodefaultlibs +Driver + +nostdlib +Driver + o -Common Joined Separate +Common Driver Joined Separate Var(asm_file_name) MissingArgError(missing filename after %qs) -o Place output into p Common Var(profile_flag) Enable function profiling +pass-exit-codes +Driver Var(pass_exit_codes) + pedantic Common Var(pedantic) Issue warnings needed for strict compliance to the standard pedantic-errors -Common +Common Var(flag_pedantic_errors) Like -pedantic but issue them as errors +pg +Driver + +pipe +Driver Var(use_pipes) + +print-file-name= +Driver JoinedOrMissing Var(print_file_name) + +print-libgcc-file-name +Driver + +print-multi-directory +Driver Var(print_multi_directory) + +print-multi-lib +Driver Var(print_multi_lib) + +print-multi-os-directory +Driver Var(print_multi_os_directory) + +print-prog-name= +Driver JoinedOrMissing Var(print_prog_name) + +print-search-dirs +Driver Var(print_search_dirs) + +print-sysroot +Driver Var(print_sysroot) + +print-sysroot-headers-suffix +Driver Var(print_sysroot_headers_suffix) + quiet -Common Var(quiet_flag) +Common Var(quiet_flag) RejectDriver Do not display functions compiled or elapsed time +save-temps +Driver + +save-temps= +Driver Joined + +time +Driver Var(report_times) + +time= +Driver JoinedOrMissing + +u +Driver Joined Separate + +undef +Driver +; C option, but driver must not handle as "-u ndef". + +v +Common Driver Var(verbose_flag) +Enable verbose output + version -Common Var(version_flag) +Common Var(version_flag) RejectDriver Display the compiler's version w Common Var(inhibit_warnings) Suppress warnings +wrapper +Driver Separate Var(wrapper_string) + +x +Driver Joined Separate + shared Common RejectNegative Negative(pie) Create a shared library +shared-libgcc +Driver + +specs +Driver Separate Alias(specs=) + +specs= +Driver Joined + +static +Driver + +static-libgcc +Driver + +static-libgfortran +Driver +; Documented for Fortran, but always accepted by driver. + +static-libstdc++ +Driver + +symbolic +Driver + pie Common RejectNegative Negative(shared) Create a position independent executable +z +Driver Joined Separate + ; This comment is to ensure we retain the blank line above.