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| author | hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-10-02 21:11:21 +0000 |
|---|---|---|
| committer | hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-10-02 21:11:21 +0000 |
| commit | 81c99a703bd5ed894d0c6730e041201a41d167fd (patch) | |
| tree | f1bb1ea97f7e03d9b624675e63f3ad74e6cc5d56 /gcc/doc | |
| parent | ea70b59793087198d6ae137fa5e68096ec1c30a3 (diff) | |
| download | gcc-81c99a703bd5ed894d0c6730e041201a41d167fd.tar.gz | |
Document -mprefer-avx128
PR target/54785
* doc/invoke.texi: Document -mprefer-avx128.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@192007 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 7578ddac93b..0e7e441b8d0 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -630,7 +630,7 @@ Objective-C and Objective-C++ Dialects}. -mincoming-stack-boundary=@var{num} @gol -mcld -mcx16 -msahf -mmovbe -mcrc32 @gol -mrecip -mrecip=@var{opt} @gol --mvzeroupper @gol +-mvzeroupper -mprefer-avx128 @gol -mmmx -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -msse4 -mavx @gol -mavx2 -maes -mpclmul -mfsgsbase -mrdrnd -mf16c -mfma @gol -msse4a -m3dnow -mpopcnt -mabm -mbmi -mtbm -mfma4 -mxop -mlzcnt @gol @@ -13926,6 +13926,11 @@ before a transfer of control flow out of the function to minimize the AVX to SSE transition penalty as well as remove unnecessary @code{zeroupper} intrinsics. +@item -mprefer-avx128 +@opindex mprefer-avx128 +This option instructs GCC to use 128-bit AVX instructions instead of +256-bit AVX instructions in the auto-vectorizer. + @item -mcx16 @opindex mcx16 This option enables GCC to generate @code{CMPXCHG16B} instructions. |