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| author | H.J. Lu <hongjiu.lu@intel.com> | 2012-10-02 21:11:21 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2012-10-02 14:11:21 -0700 |
| commit | d8ea0885d7c1403a7f9e85fe2b67d0c223565992 (patch) | |
| tree | f1bb1ea97f7e03d9b624675e63f3ad74e6cc5d56 | |
| parent | fa607ddad04aa72a7b811d366680783237b8cafe (diff) | |
| download | gcc-d8ea0885d7c1403a7f9e85fe2b67d0c223565992.zip gcc-d8ea0885d7c1403a7f9e85fe2b67d0c223565992.tar.gz gcc-d8ea0885d7c1403a7f9e85fe2b67d0c223565992.tar.bz2 | |
Document -mprefer-avx128
PR target/54785
* doc/invoke.texi: Document -mprefer-avx128.
From-SVN: r192007
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 7 |
2 files changed, 11 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 932f573..63eed37 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2012-10-02 H.J. Lu <hongjiu.lu@intel.com> + + PR target/54785 + * doc/invoke.texi: Document -mprefer-avx128. + 2012-10-02 Andrew Pinski <apinski@cavium.com> * simplify-rtx.c (simplify_unary_operation_1 <case TRUNCATE>): diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 7578dda..0e7e441 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. |