| Message ID | 7794A52CE4D579448B959EED7DD0A47214F6B504@sausexdag05.amd.com |
|---|---|
| State | New |
| Headers | show |
On Wed, Jan 9, 2013 at 6:05 AM, Kumar, Venkataramanan <Venkataramanan.Kumar@amd.com> wrote: > Please fine below patch that sets preferred vectorization mode for btver2 as avx128. > > We tested some benchmarks and found that enabling 128-bit AVX instruction generation by the auto vectorizer performs better than > default 256-bit AVX. > > Completed bootstrap and make -k check passes. > > Ok for trunk? > > Gcc/ChangeLog > ------------------- > > 2013-01-09 Venkataramanan Kumar <venkataramanan.kumar@amd.com> > > * config/i386/i386.c (initial_ix86_tune_features): Set up > X86_TUNE_AVX128_OPTIMAL for m_BTVER2. OK. Thanks, Uros.
Index: i386.c =================================================================== --- i386.c (revision 194833) +++ i386.c (working copy) @@ -2014,7 +2014,7 @@ /* X86_TUNE_AVX128_OPTIMAL: Enable 128-bit AVX instruction generation for the auto-vectorizer. */ - m_BDVER, + m_BDVER | m_BTVER2, /* X86_TUNE_REASSOC_INT_TO_PARALLEL: Try to produce parallel computations during reassociation of integer computation. */
Hi Maintainers, Please fine below patch that sets preferred vectorization mode for btver2 as avx128. We tested some benchmarks and found that enabling 128-bit AVX instruction generation by the auto vectorizer performs better than default 256-bit AVX. Completed bootstrap and make -k check passes. Ok for trunk? Gcc/ChangeLog ------------------- 2013-01-09 Venkataramanan Kumar <venkataramanan.kumar@amd.com> * config/i386/i386.c (initial_ix86_tune_features): Set up X86_TUNE_AVX128_OPTIMAL for m_BTVER2. Regards, Venkat.