[PATCH] D110000: AMDGPU: Use attributor to propagate amdgpu-flat-work-group-size

[Matt Arsenault via Phabricator via llvm-commits]

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This can merge the acceptable ranges based on the call graph, rather
than the simple application of the attribute. Remove the handling from
the old pass.


https://reviews.llvm.org/D110000

Files:
  llvm/lib/Target/AMDGPU/AMDGPUAttributor.cpp
  llvm/lib/Target/AMDGPU/AMDGPUPropagateAttributes.cpp
  llvm/test/CodeGen/AMDGPU/propagate-attributes-flat-work-group-size.ll
  llvm/test/CodeGen/AMDGPU/propagate-flat-work-group-size.ll

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