[PATCH] D142682: AMDGPU: Combine down fcopysign f64 magnitude

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: AMDGPU, foad, Pierre-vh, rampitec.
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Copy through the low bits and only apply an f32
copysign to the high half.


https://reviews.llvm.org/D142682

Files:
  llvm/lib/Target/AMDGPU/SIISelLowering.cpp
  llvm/test/CodeGen/AMDGPU/fcopysign.f16.ll
  llvm/test/CodeGen/AMDGPU/fcopysign.f64.ll

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