@xref{Overall Options,,Options Controlling the Kind of Output}.
@gccoptlist{-c -S -E -o @var{file} -combine -pipe -pass-exit-codes @gol
-x @var{language} -v -### --help@r{[}=@var{class}@r{]} --target-help @gol
---version @@@var{file}}
+--version -wrapper@@@var{file}}
@item C Language Options
@xref{C Dialect Options,,Options Controlling C Dialect}.
-fvisibility-ms-compat @gol
-Wabi -Wctor-dtor-privacy @gol
-Wnon-virtual-dtor -Wreorder @gol
--Weffc++ -Wno-deprecated -Wstrict-null-sentinel @gol
+-Weffc++ -Wstrict-null-sentinel @gol
-Wno-non-template-friend -Wold-style-cast @gol
-Woverloaded-virtual -Wno-pmf-conversions @gol
-Wsign-promo}
-w -Wextra -Wall -Waddress -Waggregate-return -Warray-bounds @gol
-Wno-attributes -Wc++-compat -Wc++0x-compat -Wcast-align -Wcast-qual @gol
-Wchar-subscripts -Wclobbered -Wcomment @gol
--Wconversion -Wcoverage-mismatch -Wno-deprecated-declarations @gol
--Wdisabled-optimization -Wno-div-by-zero @gol
+-Wconversion -Wcoverage-mismatch -Wno-deprecated @gol
+-Wno-deprecated-declarations -Wdisabled-optimization -Wno-div-by-zero @gol
-Wempty-body -Wno-endif-labels @gol
-Werror -Werror=* @gol
-Wfatal-errors -Wfloat-equal -Wformat -Wformat=2 @gol
-fdump-noaddr -fdump-unnumbered -fdump-translation-unit@r{[}-@var{n}@r{]} @gol
-fdump-class-hierarchy@r{[}-@var{n}@r{]} @gol
-fdump-ipa-all -fdump-ipa-cgraph -fdump-ipa-inline @gol
+-fdump-statistics @gol
-fdump-tree-all @gol
-fdump-tree-original@r{[}-@var{n}@r{]} @gol
-fdump-tree-optimized@r{[}-@var{n}@r{]} @gol
-fdump-tree-nrv -fdump-tree-vect @gol
-fdump-tree-sink @gol
-fdump-tree-sra@r{[}-@var{n}@r{]} @gol
--fdump-tree-salias @gol
-fdump-tree-fre@r{[}-@var{n}@r{]} @gol
-fdump-tree-vrp@r{[}-@var{n}@r{]} @gol
-ftree-vectorizer-verbose=@var{n} @gol
-fno-toplevel-reorder -fno-trapping-math -fno-zero-initialized-in-bss @gol
-fomit-frame-pointer -foptimize-register-move -foptimize-sibling-calls @gol
-fpeel-loops -fpredictive-commoning -fprefetch-loop-arrays @gol
--fprofile-generate -fprofile-use -fprofile-values -freciprocal-math @gol
--fregmove -frename-registers -freorder-blocks @gol
+-fprofile-dir=@var{path} -fprofile-generate -fprofile-generate=@var{path} @gol
+-fprofile-use -fprofile-use=@var{path} -fprofile-values @gol
+-freciprocal-math -fregmove -frename-registers -freorder-blocks @gol
-freorder-blocks-and-partition -freorder-functions @gol
-frerun-cse-after-loop -freschedule-modulo-scheduled-loops @gol
-frounding-math -frtl-abstract-sequences -fsched2-use-superblocks @gol
-ftree-dominator-opts -ftree-dse -ftree-fre -ftree-loop-im @gol
-ftree-loop-distribution @gol
-ftree-loop-ivcanon -ftree-loop-linear -ftree-loop-optimize @gol
--ftree-parallelize-loops=@var{n} -ftree-pre -ftree-reassoc -ftree-salias @gol
+-ftree-parallelize-loops=@var{n} -ftree-pre -ftree-reassoc @gol
-ftree-sink -ftree-sra -ftree-store-ccp -ftree-ter @gol
-ftree-vect-loop-version -ftree-vectorize -ftree-vrp -funit-at-a-time @gol
-funroll-all-loops -funroll-loops -funsafe-loop-optimizations @gol
-mno-id-shared-library -mshared-library-id=@var{n} @gol
-mleaf-id-shared-library -mno-leaf-id-shared-library @gol
-msep-data -mno-sep-data -mlong-calls -mno-long-calls @gol
--mfast-fp -minline-plt}
+-mfast-fp -minline-plt -mmulticore -mcorea -mcoreb -msdram}
@emph{CRIS Options}
@gccoptlist{-mcpu=@var{cpu} -march=@var{cpu} -mtune=@var{cpu} @gol
-mno-wide-multiply -mrtd -malign-double @gol
-mpreferred-stack-boundary=@var{num} -mcx16 -msahf -mrecip @gol
-mmmx -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -msse4 @gol
+-maes -mpclmul @gol
-msse4a -m3dnow -mpopcnt -mabm -msse5 @gol
-mthreads -mno-align-stringops -minline-all-stringops @gol
-mpush-args -maccumulate-outgoing-args -m128bit-long-double @gol
-m5-compact -m5-compact-nofpu @gol
-mb -ml -mdalign -mrelax @gol
-mbigtable -mfmovd -mhitachi -mrenesas -mno-renesas -mnomacsave @gol
--mieee -misize -minline-ic_invalidate -mpadstruct -mspace @gol
+-mieee -mbitops -misize -minline-ic_invalidate -mpadstruct -mspace @gol
-mprefergot -musermode -multcost=@var{number} -mdiv=@var{strategy} @gol
-mdivsi3_libfunc=@var{name} @gol
-madjust-unroll -mindexed-addressing -mgettrcost=@var{number} -mpt-fixed @gol
@item @var{file}.f
@itemx @var{file}.for
-@itemx @var{file}.FOR
+@itemx @var{file}.ftn
Fixed form Fortran source code which should not be preprocessed.
@item @var{file}.F
+@itemx @var{file}.FOR
@itemx @var{file}.fpp
@itemx @var{file}.FPP
+@itemx @var{file}.FTN
Fixed form Fortran source code which must be preprocessed (with the traditional
preprocessor).
@item @var{file}.f90
@itemx @var{file}.f95
+@itemx @var{file}.f03
+@itemx @var{file}.f08
Free form Fortran source code which should not be preprocessed.
@item @var{file}.F90
@itemx @var{file}.F95
+@itemx @var{file}.F03
+@itemx @var{file}.F08
Free form Fortran source code which must be preprocessed (with the
traditional preprocessor).
@opindex version
Display the version number and copyrights of the invoked GCC@.
+@item -wrapper
+@opindex wrapper
+Invoke all subcommands under a wrapper program. It takes a single
+comma separated list as an argument, which will be used to invoke
+the wrapper:
+
+@smallexample
+gcc -c t.c -wrapper gdb,--args
+@end smallexample
+
+This will invoke all subprograms of gcc under "gdb --args",
+thus cc1 invocation will be "gdb --args cc1 ...".
+
@include @value{srcdir}/../libiberty/at-file.texi
@end table
headers do not obey all of these guidelines; use @samp{grep -v}
to filter out those warnings.
-@item -Wno-deprecated @r{(C++ and Objective-C++ only)}
-@opindex Wno-deprecated
-@opindex Wdeprecated
-Do not warn about usage of deprecated features. @xref{Deprecated Features}.
-
@item -Wstrict-null-sentinel @r{(C++ and Objective-C++ only)}
@opindex Wstrict-null-sentinel
@opindex Wno-strict-null-sentinel
@item -Wframe-larger-than=@var{len}
@opindex Wframe-larger-than
-Warn whenever the size of a function frame is larger than @var{len} bytes.
+Warn if the size of a function frame is larger than @var{len} bytes.
+The computation done to determine the stack frame size is approximate
+and not conservative.
+The actual requirements may be somewhat greater than @var{len}
+even if you do not get a warning. In addition, any space allocated
+via @code{alloca}, variable-length arrays, or related constructs
+is not included by the compiler when determining
+whether or not to issue a warning.
@item -Wunsafe-loop-optimizations
@opindex Wunsafe-loop-optimizations
useful as a local coding convention if the programming environment is
unable to be fixed to display these characters distinctly.
+@item -Wno-deprecated
+@opindex Wno-deprecated
+@opindex Wdeprecated
+Do not warn about usage of deprecated features. @xref{Deprecated Features}.
+
@item -Wno-deprecated-declarations
@opindex Wno-deprecated-declarations
@opindex Wdeprecated-declarations
@end table
+@item -fdump-statistics-@var{option}
+@opindex -fdump-statistics
+Enable and control dumping of pass statistics in a separate file. The
+file name is generated by appending a suffix ending in @samp{.statistics}
+to the source file name. If the @samp{-@var{option}} form is used,
+@samp{-stats} will cause counters to be summed over the whole compilation unit
+while @samp{-details} will dump every event as the passes generate them.
+The default with no option is to sum counters for each function compiled.
+
@item -fdump-tree-@var{switch}
@itemx -fdump-tree-@var{switch}-@var{options}
@opindex fdump-tree
Enable showing line numbers for statements.
@item uid
Enable showing the unique ID (@code{DECL_UID}) for each variable.
+@item verbose
+Enable showing the tree dump for each statement.
@item all
-Turn on all options, except @option{raw}, @option{slim} and @option{lineno}.
+Turn on all options, except @option{raw}, @option{slim}, @option{verbose}
+and @option{lineno}.
@end table
The following tree dumps are possible:
Dump SSA related information to a file. The file name is made by appending
@file{.ssa} to the source file name.
-@item salias
-@opindex fdump-tree-salias
-Dump structure aliasing variable information to a file. This file name
-is made by appending @file{.salias} to the source file name.
-
@item alias
@opindex fdump-tree-alias
Dump aliasing information for each function. The file name is made by
copy operations. This flag is enabled by default at @option{-O} and
higher.
-@item -ftree-salias
-@opindex ftree-salias
-Perform structural alias analysis on trees. This flag
-is enabled by default at @option{-O} and higher.
-
@item -fipa-pure-const
@opindex fipa-pure-const
Discover which functions are pure or constant.
attempt to determine whether an operation on signed numbers will
overflow must be written carefully to not actually involve overflow.
+This option also allows the compiler to assume strict pointer
+semantics: given a pointer to an object, if adding an offset to that
+pointer does not produce a pointer to the same object, the addition is
+undefined. This permits the compiler to conclude that @code{p + u >
+p} is always true for a pointer @code{p} and unsigned integer
+@code{u}. This assumption is only valid because pointer wraparound is
+undefined, as the expression is false if @code{p + u} overflows using
+twos complement arithmetic.
+
See also the @option{-fwrapv} option. Using @option{-fwrapv} means
-that signed overflow is fully defined: it wraps. When
+that integer signed overflow is fully defined: it wraps. When
@option{-fwrapv} is used, there is no difference between
-@option{-fstrict-overflow} and @option{-fno-strict-overflow}. With
-@option{-fwrapv} certain types of overflow are permitted. For
-example, if the compiler gets an overflow when doing arithmetic on
-constants, the overflowed value can still be used with
+@option{-fstrict-overflow} and @option{-fno-strict-overflow} for
+integers. With @option{-fwrapv} certain types of overflow are
+permitted. For example, if the compiler gets an overflow when doing
+arithmetic on constants, the overflowed value can still be used with
@option{-fwrapv}, but not otherwise.
The @option{-fstrict-overflow} option is enabled at levels
Enabled at levels @option{-O}, @option{-O2}, @option{-O3}, @option{-Os}.
+@item -fprofile-dir=@var{path}
+@opindex fprofile-dir
+
+Set the directory to search the profile data files in to @var{path}.
+This option affects only the profile data generated by
+@option{-fprofile-generate}, @option{-ftest-coverage}, @option{-fprofile-arcs}
+and used by @option{-fprofile-use} and @option{-fbranch-probabilities}
+and its related options.
+By default, GCC will use the current directory as @var{path}
+thus the profile data file will appear in the same directory as the object file.
+
@item -fprofile-generate
+@itemx -fprofile-generate=@var{path}
@opindex fprofile-generate
Enable options usually used for instrumenting application to produce
The following options are enabled: @code{-fprofile-arcs}, @code{-fprofile-values}, @code{-fvpt}.
+If @var{path} is specified, GCC will look at the @var{path} to find
+the profile feeedback data files. See @option{-fprofile-dir}.
+
@item -fprofile-use
+@itemx -fprofile-use=@var{path}
@opindex fprofile-use
Enable profile feedback directed optimizations, and optimizations
generally profitable only with profile feedback available.
match the source code. This error can be turned into a warning by using
@option{-Wcoverage-mismatch}. Note this may result in poorly optimized
code.
+
+If @var{path} is specified, GCC will look at the @var{path} to find
+the profile feedback data files. See @option{-fprofile-dir}.
@end table
The following options control compiler behavior regarding floating
@var{name} are given in the following table:
@table @gcctabopt
-@item salias-max-implicit-fields
-The maximum number of fields in a variable without direct
-structure accesses for which structure aliasing will consider trying
-to track each field. The default is 5
-
-@item salias-max-array-elements
-The maximum number of elements an array can have and its elements
-still be tracked individually by structure aliasing. The default is 4
-
@item sra-max-structure-size
The maximum structure size, in bytes, at which the scalar replacement
of aggregates (SRA) optimization will perform block copies. The
Increasing values mean more aggressive optimization, making the compile time
increase with probably slightly better performance. The default value is 500.
-@item max-flow-memory-locations
-Similar as @option{max-cselib-memory-locations} but for dataflow liveness.
-The default value is 100.
-
@item reorder-blocks-duplicate
@itemx reorder-blocks-duplicate-feedback
@opindex minline-plt
Enable inlining of PLT entries in function calls to functions that are
not known to bind locally. It has no effect without @option{-mfdpic}.
-@end table
+@item -mmulticore
+@opindex mmulticore
+Build standalone application for multicore Blackfin processor. Proper
+start files and link scripts will be used to support multicore.
+This option defines @code{__BFIN_MULTICORE}. It can only be used with
+@option{-mcpu=bf561@r{[}-@var{sirevision}@r{]}}. It can be used with
+@option{-mcorea} or @option{-mcoreb}. If it's used without
+@option{-mcorea} or @option{-mcoreb}, single application/dual core
+programming model is used. In this model, the main function of Core B
+should be named as coreb_main. If it's used with @option{-mcorea} or
+@option{-mcoreb}, one application per core programming model is used.
+If this option is not used, single core application programming
+model is used.
+
+@item -mcorea
+@opindex mcorea
+Build standalone application for Core A of BF561 when using
+one application per core programming model. Proper start files
+and link scripts will be used to support Core A. This option
+defines @code{__BFIN_COREA}. It must be used with @option{-mmulticore}.
+
+@item -mcoreb
+@opindex mcoreb
+Build standalone application for Core B of BF561 when using
+one application per core programming model. Proper start files
+and link scripts will be used to support Core B. This option
+defines @code{__BFIN_COREB}. When this option is used, coreb_main
+should be used instead of main. It must be used with
+@option{-mmulticore}.
+
+@item -msdram
+@opindex msdram
+Build standalone application for SDRAM. Proper start files and
+link scripts will be used to put the application into SDRAM.
+Loader should initialize SDRAM before loading the application
+into SDRAM. This option defines @code{__BFIN_SDRAM}.
+@end table
+
@node CRIS Options
@subsection CRIS Options
@cindex CRIS Options
@itemx -mno-sse4.2
@itemx -msse4
@itemx -mno-sse4
+@itemx -maes
+@itemx -mno-aes
+@itemx -mpclmul
+@itemx -mno-pclmul
@itemx -msse4a
@itemx -mno-sse4a
@itemx -msse5
@opindex m3dnow
@opindex mno-3dnow
These switches enable or disable the use of instructions in the MMX,
-SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4A, SSE5, ABM or 3DNow!@: extended
-instruction sets.
+SSE, SSE2, SSE3, SSSE3, SSE4.1, AES, PCLMUL, SSE4A, SSE5, ABM or
+3DNow!@: extended instruction sets.
These extensions are also available as built-in functions: see
@ref{X86 Built-in Functions}, for details of the functions enabled and
disabled by these switches.
Use 32-bit offsets in @code{switch} tables. The default is to use
16-bit offsets.
+@item -mbitops
+@opindex mbitops
+Enable the use of bit manipulation instructions on SH2A.
+
@item -mfmovd
@opindex mfmovd
Enable the use of the instruction @code{fmovd}.
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