Hello, On 29 Jun 13:12, Yuri Rumyantsev wrote: > Hi All, > > Here is a simple patch which generates on-operand vperm instructions > introduced in knl. > Using this patch we got +5% speed-up on one important benchmark. > > Bootstrapping and regression testing did not show any new failures. > Is it OK for trunk? > > ChangeLog: > 2016-06-29 Yuri Rumyantsev <ysrum...@gmail.com> > > * config/i386/i386.c (ix86_expand_vec_perm): Add handle one-operand > permutation for TARGET_AVX512F. > (ix86_expand_vec_one_operand_perm_avx512): New function. > (expand_vec_perm_1): Invoke introduced function. > * tree-vect-loop.c (vect_transform_loop): Clear-up safelen value since > it may be not valid after vectorization. Patch is OK for main trunk. > > gcc/testsuite/ChangeLog > * gcc/testsuite/gcc.target/i386/avx512f-vect-perm-1.c: New test. > * gcc/testsuite/gcc.target/i386/avx512f-vect-perm-2.c: New test.
-- Thanks, K
