[PATCH] D86061: AMDGPU/GlobalISel: Look through copies in getPtrBaseWithConstantOffset

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
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We may have an SGPR->VGPR copy if a totally uniform pointer
calculation is used for a VGPR pointer operand.

      

Also hack around a bug in MUBUF matching which would incorrectly use
MUBUF for global when flat was requested. This should really be a
predicate on the parent pattern, but the DAG always checked this
manually inside the complex pattern.


https://reviews.llvm.org/D86061

Files:
  llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/lds-global-value.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.atomic.dec.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.atomic.inc.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.ds.fadd.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.ds.fmax.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.ds.fmin.ll

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