[PATCH] D18375: AMDGPU: Add atomic_inc + atomic_dec intrinsics

[Matt Arsenault via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: tstellarAMD.
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These are different than atomicrmw add 1 because they have
an additional input value to clamp the result.

http://reviews.llvm.org/D18375

Files:
  include/llvm/IR/IntrinsicsAMDGPU.td
  lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
  lib/Target/AMDGPU/AMDGPUISelLowering.cpp
  lib/Target/AMDGPU/AMDGPUISelLowering.h
  lib/Target/AMDGPU/SIISelLowering.cpp
  lib/Target/AMDGPU/SIISelLowering.h
  lib/Target/AMDGPU/SIInstrInfo.td
  lib/Target/AMDGPU/SIInstructions.td
  test/CodeGen/AMDGPU/llvm.amdgcn.atomic.dec.ll
  test/CodeGen/AMDGPU/llvm.amdgcn.atomic.inc.ll
  test/CodeGen/AMDGPU/local-atomics.ll

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