[PATCH] D56434: [AMDGPU] Fix dwordx3/southern-islands failures.

[Neil Henning via Phabricator via llvm-commits]

sheredom created this revision.
sheredom added reviewers: hakzsam, nhaehnle, arsenm.
sheredom added a project: AMDGPU.
Herald added subscribers: llvm-commits, t-tye, tpr, dstuttard, yaxunl, wdng, jvesely, kzhuravl.

This commit fixes the dwordx3/southern-islands failures that were found in bugzilla https://bugs.llvm.org/show_bug.cgi?id=40129, by not generating the dwordx3 variants of load/store instructions that were added to the ISA after southern islands.


Repository:
  rL LLVM

https://reviews.llvm.org/D56434

Files:
  lib/Target/AMDGPU/AMDGPUSubtarget.h
  lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
  test/CodeGen/AMDGPU/cvt_f32_ubyte.ll
  test/CodeGen/AMDGPU/early-if-convert-cost.ll
  test/CodeGen/AMDGPU/llvm.amdgcn.buffer.load.ll
  test/CodeGen/AMDGPU/merge-stores.ll
  test/CodeGen/AMDGPU/store-global.ll
  test/CodeGen/AMDGPU/store-v3i64.ll

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