ref: 4dd943156dba5e182cee8d5fda764ab1c8537eae
parent: e308ae49b39502ee871c0df8b64fb79561ce17c5
author: Ronald S. Bultje <rsbultje@gmail.com>
date: Tue Mar 31 06:26:08 EDT 2020
x86: don't use vptest in SSSE3 version This is the VEX (AVX) encoded variant for the SSE4 instruction ptest, so emulate it using pmovmskb in the SSSE3 version.