-mxl-prefetch -mpic-data-is-text-relative}
@emph{MIPS Options} (@ref{MIPS Options})
-@gccoptlist{-EL -EB -march=@var{arch} -mtune=@var{arch}
+@gccoptlist{-EL -EB -mel -meb -march=@var{arch} -mtune=@var{arch}
-mips1 -mips2 -mips3 -mips4 -mips32 -mips32r2 -mips32r3 -mips32r5
-mips32r6 -mips64 -mips64r2 -mips64r3 -mips64r5 -mips64r6
--mips16 -mno-mips16 -mflip-mips16
--minterlink-compressed -mno-interlink-compressed
--minterlink-mips16 -mno-interlink-mips16
--mabi=@var{abi} -mabicalls -mno-abicalls
--mshared -mno-shared -mplt -mno-plt -mxgot -mno-xgot
+-mips16 -mmips16e2 -mflip-mips16
+-minterlink-compressed -minterlink-mips16
+-mabi=@var{abi} -mabicalls -mshared -mplt -mxgot
-mgp32 -mgp64 -mfp32 -mfpxx -mfp64 -mhard-float -msoft-float
--mno-float -msingle-float -mdouble-float
--modd-spreg -mno-odd-spreg
+-mno-float -msingle-float -mdouble-float -modd-spreg
-mabs=@var{mode} -mnan=@var{encoding}
--mdsp -mno-dsp -mdspr2 -mno-dspr2
--mmcu -mmno-mcu
--meva -mno-eva
--mvirt -mno-virt
--mxpa -mno-xpa
--mcrc -mno-crc
--mginv -mno-ginv
--mmicromips -mno-micromips
--mmsa -mno-msa
--mloongson-mmi -mno-loongson-mmi
--mloongson-ext -mno-loongson-ext
--mloongson-ext2 -mno-loongson-ext2
+-mdsp -mdspr2 -mmcu -meva -mvirt -mxpa -mcrc -mginv
+-mmicromips -mmsa
+-mloongson-mmi -mloongson-ext -mloongson-ext2
-mfpu=@var{fpu-type}
--msmartmips -mno-smartmips
--mpaired-single -mno-paired-single -mdmx -mno-mdmx
--mips3d -mno-mips3d -mmt -mno-mt -mllsc -mno-llsc
--mlong64 -mlong32 -msym32 -mno-sym32
--G@var{num} -mlocal-sdata -mno-local-sdata
--mextern-sdata -mno-extern-sdata -mgpopt -mno-gopt
--membedded-data -mno-embedded-data
--muninit-const-in-rodata -mno-uninit-const-in-rodata
+-msmartmips -mpaired-single -mdmx -mips3d -mmt -mllsc
+-mlong64 -mlong32 -msym32
+-G@var{num} -mno-local-sdata -mno-extern-sdata -mno-gopt
+-membedded-data -muninit-const-in-rodata
-mcode-readable=@var{setting}
--msplit-addresses -mno-split-addresses
--mexplicit-relocs -mno-explicit-relocs
--mexplicit-relocs=@var{release}
--mcheck-zero-division -mno-check-zero-division
--mdivide-traps -mdivide-breaks
--mload-store-pairs -mno-load-store-pairs
--mstrict-align -mno-strict-align
--mno-unaligned-access -munaligned-access
--mmemcpy -mno-memcpy -mlong-calls -mno-long-calls
--mmad -mno-mad -mimadd -mno-imadd -mfused-madd -mno-fused-madd -nocpp
--mfix-24k -mno-fix-24k
--mfix-r4000 -mno-fix-r4000 -mfix-r4400 -mno-fix-r4400
--mfix-r5900 -mno-fix-r5900
--mfix-r10000 -mno-fix-r10000 -mfix-rm7000 -mno-fix-rm7000
--mfix-vr4120 -mno-fix-vr4120
--mfix-vr4130 -mno-fix-vr4130 -mfix-sb1 -mno-fix-sb1
+-msplit-addresses -mexplicit-relocs -mexplicit-relocs=@var{release}
+-mno-check-zero-division -mdivide-traps -mdivide-breaks
+-mno-load-store-pairs
+-mstrict-align -mno-unaligned-access
+-mmemcpy -mlong-calls
+-mmad -mimadd -mno-fused-madd -nocpp
+-mfix-24k -mfix-r4000 -mfix-r4400 -mfix-r5900
+-mfix-r10000 -mfix-rm7000 -mfix-vr4120 -mfix-vr4130 -mfix-sb1
+-mfix4300 -mr10k-cache-barrier=@var{setting}
-mflush-func=@var{func} -mno-flush-func
--mbranch-cost=@var{num} -mbranch-likely -mno-branch-likely
+-mbranch-cost=@var{num} -mbranch-likely
-mcompact-branches=@var{policy}
--mfp-exceptions -mno-fp-exceptions
--mvr4130-align -mno-vr4130-align -msynci -mno-synci
--mlxc1-sxc1 -mno-lxc1-sxc1 -mmadd4 -mno-madd4
--mrelax-pic-calls -mno-relax-pic-calls -mmcount-ra-address
--mframe-header-opt -mno-frame-header-opt}
+-mno-fp-exceptions -mvr4130-align -msynci -mno-lxc1-sxc1 -mno-madd4
+-mno-relax-pic-calls -mmcount-ra-address
+-mframe-header-opt}
@emph{MMIX Options} (@ref{MMIX Options})
@gccoptlist{-mlibfuncs -mno-libfuncs -mepsilon -mno-epsilon -mabi=gnu
@table @gcctabopt
@opindex EB
+@opindex meb
+@opindex mno-el
@item -EB
+@itemx -meb
Generate big-endian code.
@opindex EL
+@opindex mel
@item -EL
+@itemx -mel
Generate little-endian code. This is the default for @samp{mips*el-*-*}
configurations.
of the @option{-mips16} option such that it targets the MIPS16e2 ASE@.
@opindex mflip-mips16
+@opindex mno-flip-mips16
@item -mflip-mips16
+@itemx -mflip-mips16
Generate MIPS16 code on alternating functions. This option is provided
for regression testing of mixed MIPS16/non-MIPS16 code generation, and is
not intended for ordinary use in compiling user code.
dynamic objects. @option{-mabicalls} is the default for SVR4-based
systems.
+@opindex mshared
+@opindex mno-shared
@item -mshared
@itemx -mno-shared
Generate (do not generate) code that is fully position-independent,
@itemx -mno-ginv
Use (do not use) the MIPS Global INValidate (GINV) instructions.
+@opindex mmsa
+@opindex mno-msa
+@item -mmsa
+@itemx -mno-msa
+Use (do not use) the MIPS MSA extension instructions.
+
@opindex mloongson-mmi
@opindex mno-loongson-mmi
@item -mloongson-mmi
@itemx -munaligned-access
@itemx -mno-unaligned-access
Disable (enable) direct unaligned access for MIPS Release 6.
-MIPSr6 requires load/store unaligned-access support, by hardware or
-trap&emulate. So @option{-mstrict-align} may be needed by kernel. The
+MIPSr6 requires load/store unaligned-access support, either by hardware or
+by trapping and emulation. In the latter case @option{-mstrict-align}
+may be needed by the operating system kernel. The
options @option{-munaligned-access} and @option{-mno-unaligned-access}
-are obsoleted, and only for backward-compatible.
+are obsolete, and only provided for backward compatibility.
@opindex mmemcpy
@opindex mno-memcpy
otherwise.
@opindex mfix-r5900
+@opindex mno-fix-r5900
@item -mfix-r5900
@itemx -mno-fix-r5900
Do not attempt to schedule the preceding instruction into the delay slot
workaround is implemented by the assembler rather than by GCC@.
@opindex mfix-rm7000
+@opindex mno-fix-rm7000
@item -mfix-rm7000
@itemx -mno-fix-rm7000
Work around the RM7000 @code{dmult}/@code{dmultu} errata. The
workarounds are implemented by the assembler rather than by GCC@.
@opindex mfix-vr4120
+@opindex mno-fix-vr4120
@item -mfix-vr4120
@itemx -mno-fix-vr4120
Work around certain VR4120 errata:
instructions. These errata are handled by the assembler, not by GCC itself.
@opindex mfix-vr4130
+@opindex mno-fix-vr4130
@item -mfix-vr4130
+@itemx -mno-fix-vr4130
Work around the VR4130 @code{mflo}/@code{mfhi} errata. The
workarounds are implemented by the assembler rather than by GCC,
although GCC avoids using @code{mflo} and @code{mfhi} if the
instructions are available instead.
@opindex mfix-sb1
+@opindex mno-fix-sb1
@item -mfix-sb1
@itemx -mno-fix-sb1
Work around certain SB-1 CPU core errata.
(This flag currently works around the SB-1 revision 2
``F1'' and ``F2'' floating-point errata.)
+@opindex mfix4300
+@opindex mno-fix4300
+@item -mfix4300
+@itemx -mno-fix4300
+Work around a bug in early VR4300 silicon that causes multiplies with
+certain operands to corrupt immediately following multiplies.
+
@opindex mr10k-cache-barrier
@item -mr10k-cache-barrier=@var{setting}
Specify whether GCC should insert cache barriers to avoid the
@item -mcompact-branches=never
@itemx -mcompact-branches=optimal
@itemx -mcompact-branches=always
-These options control which form of branches will be generated. The
+These options control which form of branches are generated. The
default is @option{-mcompact-branches=optimal}.
The @option{-mcompact-branches=never} option ensures that compact branch
-instructions will never be generated.
+instructions are never generated.
The @option{-mcompact-branches=always} option ensures that a compact
-branch instruction will be generated if available for MIPS Release 6 onwards.
+branch instruction is generated if available for MIPS Release 6 onwards.
If a compact branch instruction is not available (or pre-R6),
-a delay slot form of the branch will be used instead.
+a delay slot form of the branch is used instead.
-If it is used for MIPS16/microMIPS targets, it will be just ignored now.
+If it is used for MIPS16/microMIPS targets, it is just ignored now.
The behavior for MIPS16/microMIPS may change in future,
since they do have some compact branch instructions.
-The @option{-mcompact-branches=optimal} option will cause a delay slot
+The @option{-mcompact-branches=optimal} option causes a delay slot
branch to be used if one is available in the current ISA and the delay
slot is successfully filled. If the delay slot is not filled, a compact
-branch will be chosen if one is available.
+branch is chosen if one is available.
@opindex mfp-exceptions
+@opindex mno-fp-exceptions
@item -mfp-exceptions
@itemx -mno-fp-exceptions
Specifies whether FP exceptions are enabled. This affects how
It is enabled by default at optimization level @option{-O3}.
@opindex msynci
+@opindex mno-synci
@item -msynci
@itemx -mno-synci
Enable (disable) generation of @code{synci} instructions on
to undefined behavior.
@opindex mrelax-pic-calls
+@opindex mno-relax-pic-calls
@item -mrelax-pic-calls
@itemx -mno-relax-pic-calls
Try to turn PIC calls that are normally dispatched via register
The default is @option{-mno-mcount-ra-address}.
@opindex mframe-header-opt
+@opindex mno-frame-header-opt
@item -mframe-header-opt
@itemx -mno-frame-header-opt
Enable (disable) frame header optimization in the o32 ABI. When using the
-o32 ABI, calling functions will allocate 16 bytes on the stack for the called
+o32 ABI, calling functions allocates 16 bytes on the stack for the called
function to write out register arguments. When enabled, this optimization
-will suppress the allocation of the frame header if it can be determined that
+suppresses the allocation of the frame header if it can be determined that
it is unused.
This optimization is off by default at all optimization levels.
@opindex mlxc1-sxc1
+@opindex mno-lxc1-sxc1
@item -mlxc1-sxc1
@itemx -mno-lxc1-sxc1
When applicable, enable (disable) the generation of @code{lwxc1},
@code{swxc1}, @code{ldxc1}, @code{sdxc1} instructions. Enabled by default.
@opindex mmadd4
+@opindex mno-madd4
@item -mmadd4
@itemx -mno-madd4
When applicable, enable (disable) the generation of 4-operand @code{madd.s},
projects / thirdparty / gcc.git / commitdiff
