[PATCH] D17667: AMDGPU: Set HasExtractBitInsn

[Matt Arsenault via llvm-commits]

arsenm created this revision.
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This currently does not have the control over the bitwidth,
and there are missing optimizations to reduce the integer to
32-bit if it can be.
    
But in most situations we do want the sinking to occur.

http://reviews.llvm.org/D17667

Files:
  lib/Target/AMDGPU/AMDGPUISelLowering.cpp
  test/CodeGen/AMDGPU/cgp-bitfield-extract.ll

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