[PATCH] D116640: AMDGPU: Avoid null check during addrspacecast lowering

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
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If we know the source is a valid object, we do not need to insert a
null check. This misses a lot of opportunities from
metadata/attributes not tracked in codegen.


https://reviews.llvm.org/D116640

Files:
  llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
  llvm/lib/Target/AMDGPU/SIISelLowering.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-addrspacecast.mir
  llvm/test/CodeGen/AMDGPU/addrspacecast-known-non-null.ll
  llvm/test/CodeGen/AMDGPU/flat-scratch-init.ll

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