[PATCH] D32805: [X86][AVX512] Properly handle scalar masking for constant masks

[Guy Blank via Phabricator via llvm-commits]

guyblank created this revision.

for scalar masked instructions only the lower bit of the mask is relevant. so for constant masks we should either do an unmasked operation or no operation, depending on the value of the lower bit.


https://reviews.llvm.org/D32805

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/avx512-intrinsics.ll
  test/CodeGen/X86/avx512-scalar_mask.ll
  test/CodeGen/X86/avx512er-intrinsics.ll

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