[PATCH] D20940: AMDGPU: Fix kernel argument alignment impacting stack size

[Matt Arsenault via llvm-commits]

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

Don't use AllocateStack because kernel arguments have nothing
to do with the stack. The ensureMaxAlignment call was still
changing the stack alignment.

http://reviews.llvm.org/D20940

Files:
  lib/Target/AMDGPU/AMDGPUCallingConv.td
  lib/Target/AMDGPU/AMDGPUISelLowering.cpp
  lib/Target/AMDGPU/AMDGPUMachineFunction.cpp
  lib/Target/AMDGPU/AMDGPUMachineFunction.h
  test/CodeGen/AMDGPU/kernarg-stack-alignment.ll

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