[PATCH] D39169: [X86][SSE] Remove AssertZext stage from PEXTRW/PEXTRB lowering. NFCI.

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon created this revision.

Remove AssertZext and instead add PEXTRW/PEXTRB support to computeKnownBitsForTargetNode to simplify instruction selection.


Repository:
  rL LLVM

https://reviews.llvm.org/D39169

Files:
  lib/Target/X86/X86ISelLowering.cpp
  lib/Target/X86/X86InstrAVX512.td
  lib/Target/X86/X86InstrSSE.td

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