X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fcommon.opt;h=984825dab4d3d152bdebb5ad78393b31012f7810;hp=cd8b0adfff1c7d9e0ec98edb658eef42caaf63ed;hb=b75cad1f01aff79f08d82d2da6e34a44fb2a1338;hpb=f37ef985f35a963f06b8112872899cb9d6811969 diff --git a/gcc/common.opt b/gcc/common.opt index cd8b0adfff1..984825dab4d 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -1,6 +1,6 @@ ; Options for the language- and target-independent parts of the compiler. -; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 +; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 ; Free Software Foundation, Inc. ; ; This file is part of GCC. @@ -32,6 +32,18 @@ int optimize Variable int optimize_size +; Not used directly to control optimizations, only to save -Ofast +; setting for "optimize" attributes. +Variable +int optimize_fast + +; True if this is the lto front end. This is used to disable gimple +; generation and lowering passes that are normally run on the output +; of a front end. These passes must be bypassed for lto since they +; have already been done before the gimple was written. +Variable +bool in_lto_p = false + ; 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. @@ -42,21 +54,162 @@ int flag_complex_method = 1 Variable int flag_evaluation_order = 0 -; Set the default region and algorithm for the integrated register -; allocator. +; Language specific warning pass for unused results. +Variable +bool flag_warn_unused_result = false Variable -enum ira_algorithm flag_ira_algorithm = IRA_ALGORITHM_CB +int *param_values +; Nonzero if we should write GIMPLE bytecode for link-time optimization. Variable -enum ira_region flag_ira_region = IRA_REGION_MIXED +int flag_generate_lto -; Language specific warning pass for unused results. +; 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 flag_warn_unused_result = false +bool warn_larger_than Variable -int *param_values +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 + +; 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 + +; Type of stack check. +Variable +enum stack_check_type flag_stack_check = NO_STACK_CHECK + +; True if stack usage information needs to be computed. +Variable +bool flag_stack_usage_info = false + +; -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 + +; Name of top-level original source file (what was input to cpp). +; This comes from the #-command at the beginning of the actual input. +; If there isn't any there, then this is the cc1 input file name. +Variable +const char *main_input_filename + +; Pointer to base name in main_input_filename, with directories and a +; single final extension removed, and the length of this base +; name. + +Variable +const char *main_input_basename + +Variable +int main_input_baselength + +; Which options have been printed by --help. +Variable +char *help_printed + +; Which enums have been printed by --help. 0 = not printed, no +; relevant options seen, 1 = relevant option seen, not yet printed, 2 +; = printed. +Variable +char *help_enum_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 @@ -160,7 +313,7 @@ Common Alias(pedantic) Common Alias(pedantic-errors) -pie -Common Alias(pie) +Driver Alias(pie) -pipe Driver Alias(pipe) @@ -214,7 +367,7 @@ Common Alias(p) Driver Alias(save-temps) -shared -Common Alias(shared) +Driver Alias(shared) -specs Driver Separate Alias(specs=) @@ -278,6 +431,9 @@ Driver L Driver Joined Separate +N +Driver + O Common JoinedOrMissing Optimization -O Set optimization level to @@ -290,6 +446,15 @@ Ofast Common Optimization Optimize for speed disregarding exact standards compliance +Q +Driver + +Qn +Driver Negative(Qy) + +Qy +Driver Negative(Qn) + R Driver Joined Separate @@ -302,12 +467,21 @@ Driver Joined Separate Tbss Driver Separate +Tbss= +Driver Joined + Tdata Driver Separate +Tdata= +Driver Joined + Ttext Driver Separate +Ttext= +Driver Joined + W Common RejectNegative Warning Alias(Wextra) This switch is deprecated; use -Wextra instead @@ -369,10 +543,18 @@ Wframe-larger-than= Common RejectNegative Joined UInteger -Wframe-larger-than= Warn if a function's stack frame requires more than bytes +Wfree-nonheap-object +Common Var(warn_free_nonheap_object) Init(1) Warning +Warn when attempting to free a non-heap object + Winline Common Var(warn_inline) Warning Warn when an inlined function cannot be inlined +Winvalid-memory-model +Common Var(warn_invalid_memory_model) Init(1) Warning +Warn when an atomic memory model parameter is known to be outside the valid range. + Wlarger-than- Common RejectNegative Joined Warning Undocumented Alias(Wlarger-than=) @@ -388,10 +570,6 @@ Wmissing-noreturn Common Var(warn_missing_noreturn) Warning Warn about functions which might be candidates for __attribute__((noreturn)) -Wmudflap -Common Var(warn_mudflap) Init(1) Warning -Warn about constructs not instrumented by -fmudflap - Woverflow Common Var(warn_overflow) Init(1) Warning Warn about overflow in arithmetic expressions @@ -412,6 +590,10 @@ Wstack-protector Common Var(warn_stack_protect) Warning Warn when not issuing stack smashing protection for some reason +Wstack-usage= +Common Joined RejectNegative UInteger Var(warn_stack_usage) Init(-1) Warning +Warn if stack usage might be larger than specified amount + Wstrict-aliasing Common Warning Warn about code which might break strict aliasing rules @@ -468,6 +650,10 @@ Wuninitialized Common Var(warn_uninitialized) Init(-1) Warning Warn about uninitialized automatic variables +Wmaybe-uninitialized +Common Var(warn_maybe_uninitialized) Warning +Warn about maybe uninitialized automatic variables + Wunreachable-code Common Ignore Does nothing. Preserved for backward compatibility. @@ -508,6 +694,10 @@ Wcoverage-mismatch Common Var(warn_coverage_mismatch) Init(1) Warning Warn in case profiles in -fprofile-use do not match +Wvector-operation-performance +Common Var(warn_vector_operation_performance) Warning +Warn when a vector operation is compiled outside the SIMD + Xassembler Driver Separate @@ -517,15 +707,18 @@ Driver Separate Xpreprocessor Driver Separate +Z +Driver + aux-info -Common Separate +Common Separate Var(aux_info_file_name) -aux-info Emit declaration information into aux-info= Common Joined Alias(aux-info) auxbase -Common Separate RejectDriver +Common Separate RejectDriver Var(aux_base_name) auxbase-strip Common Separate RejectDriver @@ -541,11 +734,11 @@ 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 @@ -560,6 +753,13 @@ Driver e Driver Joined Separate +; This option has historically been passed down to the linker by an +; accident of a %{e*} spec, so ensure it continues to be passed down +; as a single option. The supported option for this purpose is +; -rdynamic. See PR 47390. +export-dynamic +Driver Undocumented + ; 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 @@ -575,7 +775,18 @@ Driver Joined Separate ; in template non-type arguments of pointer type. ; ; 4: The version of the ABI that introduces unambiguous mangling of -; vector types. +; vector types. First selectable in G++ 4.5. +; +; 5: The version of the ABI that ignores attribute const/noreturn +; in function pointer mangling, and corrects mangling of decltype and +; function parameters used in other parameters and the return type. +; First selectable in G++ 4.6. +; +; 6: The version of the ABI that doesn't promote scoped enums to int and +; changes the mangling of template argument packs, const/static_cast, +; prefix ++ and --, and a class scope function used as a template +; argument. +; First selectable in G++ 4.7. ; ; Additional positive integers will be assigned as new versions of ; the ABI become the default version of the ABI. @@ -587,28 +798,28 @@ 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,0) Optimization UInteger Align the start of loops falign-loops= -Common RejectNegative Joined UInteger +Common RejectNegative Joined UInteger Var(align_loops) fargument-alias Common Ignore @@ -663,11 +874,11 @@ 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 @@ -698,9 +909,13 @@ 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 Driver RejectNegative +Common Driver RejectNegative Var(flag_compare_debug) Run only the second compilation of -fcompare-debug +fcompare-elim +Common Report Var(flag_compare_elim_after_reload) Optimization +Perform comparison elimination after register allocation has finished + fconserve-stack Common Var(flag_conserve_stack) Optimization Do not perform optimizations increasing noticeably stack usage @@ -722,7 +937,7 @@ Common Ignore Does nothing. Preserved for backward compatibility. fcx-limited-range -Common Report Var(flag_cx_limited_range) Optimization +Common Report Var(flag_cx_limited_range) Optimization SetByCombined Omit range reduction step when performing complex division fcx-fortran-rules @@ -734,17 +949,21 @@ 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 +fdebug-types-section +Common Report Var(flag_debug_types_section) Init(1) +Output .debug_types section when using DWARF v4 debuginfo. + ; Nonzero for -fdefer-pop: don't pop args after each function call ; instead save them up to pop many calls' args with one insns. fdefer-pop @@ -759,16 +978,41 @@ fdelete-null-pointer-checks Common Report Var(flag_delete_null_pointer_checks) Init(1) Optimization Delete useless null pointer checks +fdevirtualize +Common Report Var(flag_devirtualize) Optimization +Try to convert virtual calls to direct ones. + fdiagnostics-show-location= -Common Joined RejectNegative +Common Joined RejectNegative Enum(diagnostic_prefixing_rule) -fdiagnostics-show-location=[once|every-line] How often to emit source location at the beginning of line-wrapped diagnostics +; Required for these enum values. +SourceInclude +pretty-print.h + +Enum +Name(diagnostic_prefixing_rule) Type(int) + +EnumValue +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-option Common Var(flag_diagnostics_show_option) Init(1) Amend appropriate diagnostic messages with the command line option that controls them +fdisable- +Common Joined RejectNegative Var(common_deferred_options) Defer +-fdisable-[tree|rtl|ipa]-=range1+range2 disables an optimization pass + +fenable- +Common Joined RejectNegative Var(common_deferred_options) Defer +-fenable-[tree|rtl|ipa]-=range1+range2 enables an optimization pass + fdump- -Common Joined RejectNegative +Common Joined RejectNegative Var(common_deferred_options) Defer -fdump- Dump various compiler internals to a file fdump-final-insns @@ -778,10 +1022,18 @@ 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-passes +Common Var(flag_dump_passes) Init(0) +Dump optimization passes + fdump-unnumbered Common Report Var(flag_dump_unnumbered) Suppress output of instruction numbers, line number notes and addresses in debugging dumps @@ -818,10 +1070,6 @@ femit-class-debug-always Common Report Var(flag_emit_class_debug_always) Init(0) Do not suppress C++ class debug information. -fenable-icf-debug -Common Report Var(flag_enable_icf_debug) -Generate debug information to support Identical Code Folding (ICF) - fexceptions Common Report Var(flag_exceptions) Optimization Enable exception handling @@ -831,18 +1079,31 @@ Common Report Var(flag_expensive_optimizations) Optimization Perform a number of minor, expensive optimizations fexcess-precision= -Common Joined RejectNegative +Common Joined RejectNegative Enum(excess_precision) Var(flag_excess_precision_cmdline) Init(EXCESS_PRECISION_DEFAULT) -fexcess-precision=[fast|standard] Specify handling of excess floating-point precision +Enum +Name(excess_precision) Type(enum excess_precision) UnknownError(unknown excess precision style %qs) + +EnumValue +Enum(excess_precision) String(fast) Value(EXCESS_PRECISION_FAST) + +EnumValue +Enum(excess_precision) String(standard) Value(EXCESS_PRECISION_STANDARD) + ffast-math Common +ffat-lto-objects +Common Var(flag_fat_lto_objects) Init(1) +Output lto objects containing both the intermediate language and binary output. + ffinite-math-only -Common Report Var(flag_finite_math_only) Optimization +Common Report Var(flag_finite_math_only) Optimization SetByCombined 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 @@ -857,6 +1118,23 @@ fforward-propagate Common Report Var(flag_forward_propagate) Optimization Perform a forward propagation pass on RTL +ffp-contract= +Common Joined RejectNegative Enum(fp_contract_mode) Var(flag_fp_contract_mode) Init(FP_CONTRACT_FAST) +-ffp-contract=[off|on|fast] Perform floating-point expression contraction. + +Enum +Name(fp_contract_mode) Type(enum fp_contract_mode) UnknownError(unknown floating point contraction style %qs) + +EnumValue +Enum(fp_contract_mode) String(off) Value(FP_CONTRACT_OFF) + +; Not implemented, fall back to conservative FP_CONTRACT_OFF. +EnumValue +Enum(fp_contract_mode) String(on) Value(FP_CONTRACT_OFF) + +EnumValue +Enum(fp_contract_mode) String(fast) Value(FP_CONTRACT_FAST) + ; 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. @@ -915,6 +1193,10 @@ floop-block Common Report Var(flag_loop_block) Optimization Enable Loop Blocking transformation +fgnu-tm +Common Report Var(flag_tm) +Enable support for GNU transactional memory + floop-flatten Common Report Var(flag_loop_flatten) Optimization Enable Loop Flattening transformation @@ -963,26 +1245,23 @@ 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 +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) Init(1) Optimization -Integrate functions called once into their callers +Common Report Var(flag_inline_functions_called_once) Optimization +Integrate functions only required by their single caller finline-limit- Common RejectNegative Joined Alias(finline-limit=) @@ -991,6 +1270,10 @@ finline-limit= Common RejectNegative Joined UInteger -finline-limit= Limit the size of inlined functions to +finline-atomics +Common Report Var(flag_inline_atomics) Init(1) Optimization +Inline __atomic operations when a lock free instruction sequence is available. + finstrument-functions Common Report Var(flag_instrument_function_entry_exit) Instrument function entry and exit with profiling calls @@ -1033,18 +1316,38 @@ Perform matrix layout flattening and transposing based on profiling information. fipa-struct-reorg -Common Report Var(flag_ipa_struct_reorg) -Perform structure layout optimizations based -on profiling information. +Common Ignore +Does nothing. Preserved for backward compatibility. fira-algorithm= -Common Joined RejectNegative +Common Joined RejectNegative Enum(ira_algorithm) Var(flag_ira_algorithm) Init(IRA_ALGORITHM_CB) -fira-algorithm=[CB|priority] Set the used IRA algorithm +Enum +Name(ira_algorithm) Type(enum ira_algorithm) UnknownError(unknown IRA algorithm %qs) + +EnumValue +Enum(ira_algorithm) String(CB) Value(IRA_ALGORITHM_CB) + +EnumValue +Enum(ira_algorithm) String(priority) Value(IRA_ALGORITHM_PRIORITY) + fira-region= -Common Joined RejectNegative +Common Joined RejectNegative Enum(ira_region) Var(flag_ira_region) Init(IRA_REGION_AUTODETECT) -fira-region=[one|all|mixed] Set regions for IRA +Enum +Name(ira_region) Type(enum ira_region) UnknownError(unknown IRA region %qs) + +EnumValue +Enum(ira_region) String(one) Value(IRA_REGION_ONE) + +EnumValue +Enum(ira_region) String(all) Value(IRA_REGION_ALL) + +EnumValue +Enum(ira_region) String(mixed) Value(IRA_REGION_MIXED) + fira-loop-pressure Common Report Var(flag_ira_loop_pressure) Use IRA based register pressure calculation @@ -1087,9 +1390,13 @@ 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 @@ -1098,6 +1405,10 @@ 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 RejectNegative UInteger Var(flag_lto_compression_level) Init(-1) @@ -1108,9 +1419,13 @@ Common Report Var(flag_lto_report) Init(0) Optimization Report various link-time optimization statistics fmath-errno -Common Report Var(flag_errno_math) Init(1) Optimization +Common Report Var(flag_errno_math) Init(1) Optimization SetByCombined 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 @@ -1146,18 +1461,6 @@ fmove-loop-invariants Common Report Var(flag_move_loop_invariants) Init(1) Optimization Move loop invariant computations out of loops -fmudflap -Common RejectNegative Report Var(flag_mudflap) -Add mudflap bounds-checking instrumentation for single-threaded program - -fmudflapth -Common RejectNegative Report Var(flag_mudflap,2) -Add mudflap bounds-checking instrumentation for multi-threaded program - -fmudflapir -Common RejectNegative Report Var(flag_mudflap_ignore_reads) -Ignore read operations when inserting mudflap instrumentation - fdce Common Var(flag_dce) Init(1) Optimization Use the RTL dead code elimination pass @@ -1239,11 +1542,11 @@ 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 @@ -1263,7 +1566,7 @@ 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'. @@ -1292,10 +1595,10 @@ 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 @@ -1341,7 +1644,7 @@ Common Ignore Does nothing. Preserved for backward compatibility. frounding-math -Common Report Var(flag_rounding_math) Optimization +Common Report Var(flag_rounding_math) Optimization SetByCombined Disable optimizations that assume default FP rounding behavior fsched-interblock @@ -1365,7 +1668,7 @@ 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 @@ -1462,19 +1765,28 @@ 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. +Common Ignore +Does nothing. Preserved for backward compatibility. + +free +Common Report Var(flag_ree) Init(0) +Turn on Redundant Extensions Elimination pass. fshow-column Common Report Var(flag_show_column) Init(1) Show column numbers in diagnostics, when available. Default on +fshrink-wrap +Common Report Var(flag_shrink_wrap) Optimization +Emit function prologues only before parts of the function that need it, +rather than at the top of the function. + fsignaling-nans -Common Report Var(flag_signaling_nans) Optimization +Common Report Var(flag_signaling_nans) Optimization SetByCombined Disable optimizations observable by IEEE signaling NaNs fsigned-zeros -Common Report Var(flag_signed_zeros) Init(1) Optimization +Common Report Var(flag_signed_zeros) Init(1) Optimization SetByCombined Disable floating point optimizations that ignore the IEEE signedness of zero fsingle-precision-constant @@ -1506,14 +1818,14 @@ 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 @@ -1561,9 +1873,24 @@ Common Report Var(time_report) Report the time taken by each compiler pass ftls-model= -Common Joined RejectNegative +Common Joined RejectNegative Enum(tls_model) Var(flag_tls_default) Init(TLS_MODEL_GLOBAL_DYNAMIC) -ftls-model=[global-dynamic|local-dynamic|initial-exec|local-exec] Set the default thread-local storage code generation model +Enum +Name(tls_model) Type(enum tls_model) UnknownError(unknown TLS model %qs) + +EnumValue +Enum(tls_model) String(global-dynamic) Value(TLS_MODEL_GLOBAL_DYNAMIC) + +EnumValue +Enum(tls_model) String(local-dynamic) Value(TLS_MODEL_LOCAL_DYNAMIC) + +EnumValue +Enum(tls_model) String(initial-exec) Value(TLS_MODEL_INITIAL_EXEC) + +EnumValue +Enum(tls_model) String(local-exec) Value(TLS_MODEL_LOCAL_EXEC) + ftoplevel-reorder Common Report Var(flag_toplevel_reorder) Init(2) Optimization Reorder top level functions, variables, and asms @@ -1576,7 +1903,7 @@ Perform superblock formation via tail duplication ; (user-visible) trap. This is the case, for example, in nonstop ; IEEE 754 arithmetic. ftrapping-math -Common Report Var(flag_trapping_math) Init(1) Optimization +Common Report Var(flag_trapping_math) Init(1) Optimization SetByCombined Assume floating-point operations can trap ftrapv @@ -1627,6 +1954,10 @@ ftree-dominator-opts Common Report Var(flag_tree_dom) Optimization Enable dominator optimizations +ftree-tail-merge +Common Report Var(flag_tree_tail_merge) Optimization +Enable tail merging on trees + ftree-dse Common Report Var(flag_tree_dse) Optimization Enable dead store elimination @@ -1639,6 +1970,10 @@ ftree-fre Common Report Var(flag_tree_fre) Optimization Enable Full Redundancy Elimination (FRE) on trees +foptimize-strlen +Common Report Var(flag_optimize_strlen) Optimization +Enable string length optimizations on trees + ftree-loop-distribution Common Report Var(flag_tree_loop_distribution) Optimization Enable loop distribution on trees @@ -1652,8 +1987,8 @@ Common Report Var(flag_tree_loop_im) Init(1) Optimization Enable loop invariant motion on trees ftree-loop-linear -Common Report Var(flag_tree_loop_linear) Optimization -Enable linear loop transforms on trees +Common Alias(floop-interchange) +Enable loop interchange transforms. Same as -floop-interchange ftree-loop-ivcanon Common Report Var(flag_tree_loop_ivcanon) Init(1) Optimization @@ -1727,12 +2062,12 @@ Common Report Var(flag_unsafe_loop_optimizations) Optimization Allow loop optimizations to assume that the loops behave in normal way fassociative-math -Common Report Var(flag_associative_math) +Common Report Var(flag_associative_math) SetByCombined Allow optimization for floating-point arithmetic which may change the result of the operation due to rounding. freciprocal-math -Common Report Var(flag_reciprocal_math) +Common Report Var(flag_reciprocal_math) SetByCombined Same as -fassociative-math for expressions which include division. ; Nonzero means that unsafe floating-point math optimizations are allowed @@ -1740,7 +2075,7 @@ Same as -fassociative-math for expressions which include division. ; are allowed to assume that their arguments and results are "normal" ; (e.g., nonnegative for SQRT). funsafe-math-optimizations -Common Report Var(flag_unsafe_math_optimizations) Optimization +Common Report Var(flag_unsafe_math_optimizations) Optimization SetByCombined Allow math optimizations that may violate IEEE or ISO standards funswitch-loops @@ -1798,7 +2133,7 @@ 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 @@ -1816,9 +2151,23 @@ Common Report Var(flag_verbose_asm) Add extra commentary to assembler output fvisibility= -Common Joined RejectNegative +Common Joined RejectNegative Enum(symbol_visibility) Var(default_visibility) Init(VISIBILITY_DEFAULT) -fvisibility=[default|internal|hidden|protected] Set the default symbol visibility +Enum +Name(symbol_visibility) Type(enum symbol_visibility) UnknownError(unrecognized visibility value %qs) + +EnumValue +Enum(symbol_visibility) String(default) Value(VISIBILITY_DEFAULT) + +EnumValue +Enum(symbol_visibility) String(internal) Value(VISIBILITY_INTERNAL) + +EnumValue +Enum(symbol_visibility) String(hidden) Value(VISIBILITY_HIDDEN) + +EnumValue +Enum(symbol_visibility) String(protected) Value(VISIBILITY_PROTECTED) fvpt Common Report Var(flag_value_profile_transformations) Optimization @@ -1828,14 +2177,6 @@ fweb Common Report Var(flag_web) Init(2) Optimization Construct webs and split unrelated uses of single variable -fwhopr -Common -Enable partitioned link-time optimization - -fwhopr= -Common RejectNegative Joined Var(flag_whopr) -Partitioned link-time optimization with number of parallel jobs or jobserver. - ftree-builtin-call-dce Common Report Var(flag_tree_builtin_call_dce) Init(0) Optimization Enable conditional dead code elimination for builtin calls @@ -1868,6 +2209,14 @@ ggdb Common JoinedOrMissing Generate debug information in default extended format +gno-record-gcc-switches +Common RejectNegative Var(dwarf_record_gcc_switches,0) Init(0) +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. + gstabs Common JoinedOrMissing Negative(gstabs+) Generate debug information in STABS format @@ -1910,17 +2259,23 @@ Common Joined Var(plugindir_string) Init(0) l Driver Joined Separate +n +Driver + no-canonical-prefixes Driver nodefaultlibs Driver +nostartfiles +Driver + nostdlib Driver o -Common Driver Joined Separate MissingArgError(missing filename after %qs) +Common Driver Joined Separate Var(asm_file_name) MissingArgError(missing filename after %qs) -o Place output into p @@ -1935,7 +2290,7 @@ 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 @@ -1975,12 +2330,21 @@ quiet Common Var(quiet_flag) RejectDriver Do not display functions compiled or elapsed time +r +Driver + +s +Driver + save-temps Driver save-temps= Driver Joined +t +Driver + time Driver Var(report_times) @@ -1995,7 +2359,8 @@ Driver ; C option, but driver must not handle as "-u ndef". v -Driver +Common Driver Var(verbose_flag) +Enable verbose output version Common Var(version_flag) RejectDriver @@ -2012,7 +2377,7 @@ x Driver Joined Separate shared -Common RejectNegative Negative(pie) +Driver RejectNegative Negative(pie) Create a shared library shared-libgcc @@ -2037,11 +2402,15 @@ Driver static-libstdc++ Driver +static-libgo +Driver +; Documented for Go, but always accepted by driver. + symbolic Driver pie -Common RejectNegative Negative(shared) +Driver RejectNegative Negative(shared) Create a position independent executable z