[PATCH] D22108: AMDGPU: Only use legal inline immediates with kill pseudo

[Matt Arsenault via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: nhaehnle.
arsenm added a subscriber: llvm-commits.
Herald added a reviewer: tstellarAMD.
Herald added subscribers: kzhuravl, arsenm.

Only if the value is negative or positive is what matters,
so use a constant that doesn't require an instruction to
materialize.

http://reviews.llvm.org/D22108

Files:
  lib/Target/AMDGPU/AMDGPUISelLowering.cpp
  lib/Target/AMDGPU/AMDGPUISelLowering.h
  lib/Target/AMDGPU/AMDGPUInstrInfo.td
  lib/Target/AMDGPU/SIISelLowering.cpp
  lib/Target/AMDGPU/SIInstructions.td
  test/CodeGen/AMDGPU/skip-if-dead.ll

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