NFC.
Adding MC regressions tests to cover all the SSE ISA sets as follows:
SSE, SSE2, SSE3, SSE4, SSE42, SSEMXCSR, SSE_PREFETCH, SSSE3
This patch is part of a larger task to cover MC encoding of all X86 ISA Sets.
See revision: https://reviews.llvm.org/D39952
movntsd/movntss is an AMD SSE4A instruction. Can you move it any other instructions to SSE4A-64.s/SSE4A-32.s Probably should split SSE4.1 and SSE4.2 as well.