https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61618
--- Comment #3 from Stupachenko Evgeny <evstupac at gmail dot com> --- The patch fix the fail: diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 8046c67..2cffcef 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -43211,12 +43211,10 @@ expand_vec_perm_pblendv (struct expand_vec_perm_d *d) bool ok; /* Use the same checks as in expand_vec_perm_blend, but skipping - AVX2 as it requires more than 2 instructions for general case. */ + AVX float case and AVX2 as they require more than 2 instructions. */ if (d->one_operand_p) return false; - if (TARGET_AVX && (vmode == V4DFmode || vmode == V8SFmode)) - ; - else if (TARGET_SSE4_1 && GET_MODE_SIZE (vmode) == 16) + if (TARGET_SSE4_1 && GET_MODE_SIZE (vmode) == 16) ; else return false; Submitted for review: https://gcc.gnu.org/ml/gcc-patches/2014-07/msg00182.html