[PATCH] D44045: [AMDGPU] Adjusted alignment-check for local address space;

[Farhana Aleen via Phabricator via llvm-commits]

FarhanaAleen created this revision.
FarhanaAleen added a reviewer: rampitec.
Herald added subscribers: t-tye, tpr, dstuttard, yaxunl, nhaehnle, wdng, kzhuravl, arsenm.

LDS is allocated to 64-dword alignment. In order to prove a memory address being 8 byte aligned it is sufficient to check that the offset if multiple of 8.

This allows generating ds_read/write_b64 instead of ds_read/write2_b32.


https://reviews.llvm.org/D44045

Files:
  lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
  lib/Target/AMDGPU/AMDGPUInstructions.td
  test/CodeGen/AMDGPU/ds_read2.ll
  test/CodeGen/AMDGPU/ds_read2_offset_order.ll
  test/CodeGen/AMDGPU/ds_read2_superreg.ll
  test/CodeGen/AMDGPU/ds_write2.ll

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