[PATCH] D138521: [X86] Support ANDNP combine through broadcast instructions with scalar input

[Evgenii Kudriashov via Phabricator via llvm-commits]

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Guard bitcasts and pshufd with single use


- Combine AND(BROADCAST(NOT(X))) -> ANDNP(BROADCAST(X))
- Combine AND(PSHUFD(SCALAR_TO_VECTOR(NOT(Y)))) -> ANDNP(PSHUFD(SCALAR_TO_VECTOR(Y)))


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D138521

Files:
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/test/CodeGen/X86/combine-bitselect.ll

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