[PATCH] D84647: AMDGPU/GlobalISel: Implement expansion for rsq.clamp

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: rampitec, mareko, nhaehnle, kerbowa, tstellar, foad, madhur13490, mbrkusanin, Petar.Avramovic.
Herald added subscribers: hiraditya, t-tye, tpr, dstuttard, rovka, yaxunl, wdng, jvesely, kzhuravl.
Herald added a project: LLVM.

Not sure why we handle this removed instruction on newer subtargets
for this one and no others, but maintain compatibility with the DAG.


https://reviews.llvm.org/D84647

Files:
  llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
  llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.h
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-amdgcn.rsq.clamp.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.rsq.clamp.ll

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