[PATCH] D17308: AMDGPU: Change how alignment is computed for argument lowering

[Matt Arsenault via llvm-commits]

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

Fixes not treating i16 kernel arguments as 4-byte aligned when
added as legal.
    
Also fixes bug for mesa argument lowering. The implicit 36-byte offset
does not correctly align 64-bit arguments.

http://reviews.llvm.org/D17308

Files:
  lib/Target/AMDGPU/AMDGPUCallingConv.td
  lib/Target/AMDGPU/AMDGPUISelLowering.cpp
  lib/Target/AMDGPU/AMDGPUSubtarget.h
  lib/Target/AMDGPU/SIISelLowering.cpp
  lib/Target/AMDGPU/SIISelLowering.h

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