; Options for the language- and target-independent parts of the compiler. ; Copyright (C) 2003, 2004 Free Software Foundation, Inc. ; ; This file is part of GCC. ; ; GCC is free software; you can redistribute it and/or modify it under ; the terms of the GNU General Public License as published by the Free ; Software Foundation; either version 2, or (at your option) any later ; version. ; ; GCC is distributed in the hope that it will be useful, but WITHOUT ANY ; WARRANTY; without even the implied warranty of MERCHANTABILITY or ; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License ; for more details. ; ; You should have received a copy of the GNU General Public License ; along with GCC; see the file COPYING. If not, write to the Free ; Software Foundation, 59 Temple Place - Suite 330, Boston, MA ; 02111-1307, USA. ; See c.opt for a description of this file's format. ; Please try to keep this file in ASCII collating order. -help Common Display this information -param Common Separate --param = Set paramter to value. See below for a complete list of parameters -target-help Common -version Common G Common Joined Separate UInteger -G Put global and static data smaller than bytes into a special section (on some targets) O Common JoinedOrMissing -O Set optimization level to Os Common Optimize for space rather than speed W Common RejectNegative This switch is deprecated; use -Wextra instead Waggregate-return Common Warn about returning structures, unions or arrays Wcast-align Common Warn about pointer casts which increase alignment Wdeprecated-declarations Common Warn about uses of __attribute__((deprecated)) declarations Wdisabled-optimization Common Warn when an optimization pass is disabled Werror Common Treat all warnings as errors Wextra Common Print extra (possibly unwanted) warnings Wfatal-errors Common Exit on the first error occurred Winline Common Warn when an inlined function cannot be inlined Wlarger-than- Common RejectNegative Joined UInteger -Wlarger-than- Warn if an object is larger than bytes Wmissing-noreturn Common Warn about functions which might be candidates for __attribute__((noreturn)) Wpacked Common Warn when the packed attribute has no effect on struct layout Wpadded Common Warn when padding is required to align structure members Wshadow Common Warn when one local variable shadows another Wstrict-aliasing Common Warn about code which might break strict aliasing rules Wstrict-aliasing= Common Joined UInteger Warn about code which might break strict aliasing rules Wswitch Common Warn about enumerated switches, with no default, missing a case Wswitch-default Common Warn about enumerated switches missing a \"default:\" statement Wswitch-enum Common Warn about all enumerated switches missing a specific case Wsystem-headers Common Do not suppress warnings from system headers Wuninitialized Common Warn about uninitialized automatic variables Wunreachable-code Common Warn about code that will never be executed Wunused Common Enable all -Wunused- warnings Wunused-function Common Warn when a function is unused Wunused-label Common Warn when a label is unused Wunused-parameter Common Warn when a function parameter is unused Wunused-value Common Warn when an expression value is unused Wunused-variable Common Warn when a variable is unused aux-info Common Separate -aux-info Emit declaration information into aux-info= Common Joined auxbase Common Separate auxbase-strip Common Separate d Common Joined -d Enable dumps from specific passes of the compiler dumpbase Common Separate -dumpbase Set the file basename to be used for dumps fPIC Common fPIE Common fabi-version= Common Joined UInteger falign-functions Common Align the start of functions falign-functions= Common RejectNegative Joined UInteger falign-jumps Common Align labels which are only reached by jumping falign-jumps= Common RejectNegative Joined UInteger falign-labels Common Align all labels falign-labels= Common RejectNegative Joined UInteger falign-loops Common Align the start of loops falign-loops= Common RejectNegative Joined UInteger fargument-alias Common Specify that arguments may alias each other and globals fargument-noalias Common Assume arguments may alias globals but not each other fargument-noalias-global Common Assume arguments alias neither each other nor globals fasynchronous-unwind-tables Common Generate unwind tables that are exact at each instruction boundary fbounds-check Common Generate code to check bounds before indexing arrays fbranch-count-reg Common Replace add, compare, branch with branch on count register fbranch-probabilities Common Use profiling information for branch probabilities fbranch-target-load-optimize Common Perform branch target load optimization before prologue / epilogue threading fbranch-target-load-optimize2 Common Perform branch target load optimization after prologue / epilogue threading fbtr-bb-exclusive Common Restrict target load migration not to re-use registers in any basic block fcall-saved- Common Joined RejectNegative -fcall-saved- Mark as being preserved across functions fcall-used- Common Joined RejectNegative -fcall-used- Mark as being corrupted by function calls fcaller-saves Common Save registers around function calls fcommon Common Do not put uninitialized globals in the common section fcprop-registers Common Perform a register copy-propagation optimization pass fcrossjumping Common Perform cross-jumping optimization fcse-follow-jumps Common When running CSE, follow jumps to their targets fcse-skip-blocks Common When running CSE, follow conditional jumps fdata-sections Common Place data items into their own section fdefer-pop Common Defer popping functions args from stack until later fdelayed-branch Common Attempt to fill delay slots of branch instructions fdelete-null-pointer-checks Common Delete useless null pointer checks fdiagnostics-show-location= Common Joined RejectNegative -fdiagnostics-show-location=[once|every-line] How often to emit source location at the beginning of line-wrapped diagnostics fdump- Common Joined RejectNegative -fdump- Dump various compiler internals to a file fdump-unnumbered Common Suppress output of instruction numbers and line number notes in debugging dumps feliminate-dwarf2-dups Common Perform DWARF2 duplicate elimination feliminate-unused-debug-symbols Common Perform unused type elimination in debug info feliminate-unused-debug-types Common Perform unused type elimination in debug info fexceptions Common Enable exception handling fexpensive-optimizations Common Perform a number of minor, expensive optimizations ffast-math Common ffinite-math-only Common Assume no NaNs or infinities are generated ffixed- Common Joined RejectNegative -ffixed- Mark as being unavailable to the compiler ffloat-store Common Do not store floats in registers fforce-addr Common Copy memory address constants into registers before use fforce-mem Common Copy memory operands into registers before use ffunction-cse Common Allow function addresses to be held in registers ffunction-sections Common Place each function into its own section fgcse Common Perform global common subexpression elimination fgcse-lm Common Perform enhanced load motion during global common subexpression elimination fgcse-sm Common Perform store motion after global common subexpression elimination fgcse-las Common Perform redundant load after store elimination in global common subexpression elimination fgcse-after-reload Common Perform global common subexpression elimination after register allocation has finished. fguess-branch-probability Common Enable guessing of branch probabilities fident Common Process #ident directives fif-conversion Common Perform conversion of conditional jumps to branchless equivalents fif-conversion2 Common Perform conversion of conditional jumps to conditional execution finhibit-size-directive Common Do not generate .size directives finline Common Pay attention to the \"inline\" keyword finline-functions Common Integrate simple functions into their callers finline-limit- Common RejectNegative Joined UInteger finline-limit= Common RejectNegative Joined UInteger -finline-limit= Limit the size of inlined functions to finstrument-functions Common Instrument function entry and exit with profiling calls fkeep-inline-functions Common Generate code for functions even if they are fully inlined fkeep-static-consts Common Emit static const variables even if they are not used fleading-underscore Common Give external symbols a leading underscore floop-optimize Common Perform loop optimizations fmath-errno Common Set errno after built-in math functions fmem-report Common Report on permanent memory allocation fmerge-all-constants Common Attempt to merge identical constants and constant variables fmerge-constants Common Attempt to merge identical constants across compilation units fmessage-length= Common RejectNegative Joined UInteger -fmessage-length= Limit diagnostics to characters per line. 0 suppresses line-wrapping fmodulo-sched Common Perform SMS based modulo scheduling before the first scheduling pass fmove-all-movables Common Force all loop invariant computations out of loops fmudflap Common RejectNegative Add mudflap bounds-checking instrumentation for single-threaded program. fmudflapth Common RejectNegative Add mudflap bounds-checking instrumentation for multi-threaded program. fmudflapir Common RejectNegative Ignore read operations when inserting mudflap instrumentation. fnew-ra Common Use graph-coloring register allocation fnon-call-exceptions Common Support synchronous non-call exceptions fold-unroll-loops Common Perform loop unrolling when iteration count is known fold-unroll-all-loops Common Perform loop unrolling for all loops fomit-frame-pointer Common When possible do not generate stack frames foptimize-register-move Common Do the full register move optimization pass foptimize-sibling-calls Common Optimize sibling and tail recursive calls fpack-struct Common Pack structure members together without holes fpcc-struct-return Common Return small aggregates in memory, not registers fpeel-loops Common Perform loop peeling fpeephole Common Enable machine specific peephole optimizations fpeephole2 Common Enable an RTL peephole pass before sched2 fpic Common Generate position-independent code if possible fpie Common Generate position-independent code for executables if possible fprefetch-loop-arrays Common Generate prefetch instructions, if available, for arrays in loops fprofile Common Enable basic program profiling code fprofile-arcs Common Insert arc-based program profiling code fprofile-generate Common Enable common options for generating profile info for profile feedback directed optimizations fprofile-use Common Enable common options for performing profile feedback directed optimizations fprofile-values Common Insert code to profile values of expressions frandom-seed Common frandom-seed= Common Joined RejectNegative -frandom-seed= Make compile reproducible using freduce-all-givs Common Strength reduce all loop general induction variables freg-struct-return Common Return small aggregates in registers fregmove Common Enables a register move optimization frename-registers Common Perform a register renaming optimization pass freorder-blocks Common Reorder basic blocks to improve code placement freorder-blocks-and-partition Common Reorder basic blocks and partition into hot and cold sections freorder-functions Common Reorder functions to improve code placement frerun-cse-after-loop Common Add a common subexpression elimination pass after loop optimizations frerun-loop-opt Common Run the loop optimizer twice frounding-math Common Disable optimizations that assume default FP rounding behavior fsched-interblock Common Enable scheduling across basic blocks fsched-spec Common Allow speculative motion of non-loads fsched-spec-load Common Allow speculative motion of some loads fsched-spec-load-dangerous Common Allow speculative motion of more loads fsched-verbose= Common RejectNegative Joined -fsched-verbose= Set the verbosity level of the scheduler fsched2-use-superblocks Common If scheduling post reload, do superblock scheduling fsched2-use-traces Common If scheduling post reload, do trace scheduling fschedule-insns Common Reschedule instructions before register allocation fschedule-insns2 Common Reschedule instructions after register allocation fsched-stalled-insns Common Allow premature scheduling of queued insns fsched-stalled-insns= Common RejectNegative Joined UInteger -fsched-stalled-insns= Set number of queued insns that can be prematurely scheduled fsched-stalled-insns-dep Common Set dependence distance checking in premature scheduling of queued insns fsched-stalled-insns-dep= Common RejectNegative Joined UInteger -fsched-stalled-insns-dep= Set dependence distance checking in premature scheduling of queued insns fshared-data Common Mark data as shared rather than private fsignaling-nans Common Disable optimizations observable by IEEE signaling NaNs fsingle-precision-constant Common Convert floating point constants to single precision constants fstack-check Common Insert stack checking code into the program fstack-limit Common fstack-limit-register= Common RejectNegative Joined -fstack-limit-register= Trap if the stack goes past fstack-limit-symbol= Common RejectNegative Joined -fstack-limit-symbol= Trap if the stack goes past symbol fstrength-reduce Common Perform strength reduction optimizations fstrict-aliasing Common Assume strict aliasing rules apply fsyntax-only Common Check for syntax errors, then stop ftest-coverage Common Create data files needed by \"gcov\" fthread-jumps Common Perform jump threading optimizations ftime-report Common Report the time taken by each compiler pass ftls-model= Common Joined RejectNegative -ftls-model=[global-dynamic|local-dynamic|initial-exec|local-exec] Set the default thread-local storage code generation model ftracer Common Perform superblock formation via tail duplication ftrapping-math Common Assume floating-point operations can trap ftrapv Common Trap for signed overflow in addition, subtraction and multiplication ftree-based-profiling Common Use tree-ssa based implementation of profiling ftree-ccp Common Enable SSA-CCP optimization on trees ftree-ch Common Enable loop header copying on trees ftree-combine-temps Common Coalesce memory temporaries in the SSA->normal pass ftree-copyrename Common Replace SSA temporaries with better names in copies. ftree-dce Common Enable SSA dead code elimination optimization on trees ftree-dominator-opts Common Enable dominator optimizations ftree-dse Common Enable dead store elimination ftree-points-to= Common Joined RejectNegative ftree-pre Common Enable SSA-PRE optimization on trees ftree-sra Common Perform scalar replacement of aggregates ftree-ter Common Replace temporary expressions in the SSA->normal pass ftree-lrs Common Perform live range splitting during the SSA->normal pass. funit-at-a-time Common Compile whole compilation unit at a time funroll-loops Common Perform loop unrolling when iteration count is known funroll-all-loops Common Perform loop unrolling for all loops funsafe-math-optimizations Common Allow math optimizations that may violate IEEE or ISO standards funswitch-loops Common Perform loop unswitching funwind-tables Common Just generate unwind tables for exception handling fvar-tracking Common Perform variable tracking fverbose-asm Common Add extra commentary to assembler output fvpt Common Use expression value profiles in optimizations fweb Common Construct webs and split unrelated uses of single variable fwrapv Common Assume signed arithmetic overflow wraps around fzero-initialized-in-bss Common Put zero initialized data in the bss section g Common JoinedOrMissing Generate debug information in default format gcoff Common JoinedOrMissing Generate debug information in COFF format gdwarf-2 Common JoinedOrMissing Generate debug information in DWARF v2 format ggdb Common JoinedOrMissing Generate debug information in default extended format gstabs Common JoinedOrMissing Generate debug information in STABS format gstabs+ Common JoinedOrMissing Generate debug information in extended STABS format gvms Common JoinedOrMissing Generate debug information in VMS format gxcoff Common JoinedOrMissing Generate debug information in XCOFF format gxcoff+ Common JoinedOrMissing Generate debug information in extended XCOFF format m Common Joined o Common Joined Separate -o Place output into p Common Enable function profiling pedantic Common Issue warnings needed for strict compliance to the standard pedantic-errors Common Like -pedantic but issue them as errors quiet Common Do not display functions compiled or elapsed time version Common Display the compiler's version w Common Suppress warnings ; This comment is to ensure we retain the blank line above.