[PATCH] D48012: [AMDGPU] Recognize x & ~(-1 << y) pattern.

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri created this revision.
lebedev.ri added reviewers: nhaehnle, bogner, tstellar.
lebedev.ri added a project: AMDGPU.
Herald added subscribers: t-tye, tpr, dstuttard, yaxunl, wdng, kzhuravl, arsenm.

The same pattern as https://reviews.llvm.org/D48010, but this one is IR-canonical as of https://reviews.llvm.org/D47428.


Repository:
  rL LLVM

https://reviews.llvm.org/D48012

Files:
  lib/Target/AMDGPU/AMDGPUInstructions.td
  test/CodeGen/AMDGPU/extract-lowbits.ll

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