[PATCH] D14812: AVX-512: Fixed COPY_TO_REGCLASS for mask registers

[Elena Demikhovsky via llvm-commits]

delena created this revision.
delena added a reviewer: igorb.
delena added a subscriber: llvm-commits.
delena set the repository for this revision to rL LLVM.

Copying one mask register to another under BW should be done with kmovq instruction, otherwise we can loose some bits.
Copying 8 bits under DQ may be done with kmovb.

Repository:
  rL LLVM

http://reviews.llvm.org/D14812

Files:
  lib/Target/X86/X86InstrInfo.cpp
  test/CodeGen/X86/avx512-gather-scatter-intrin.ll
  test/CodeGen/X86/avx512dq-intrinsics.ll
  test/CodeGen/X86/avx512dqvl-intrinsics.ll

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