[PATCH] D77653: AMDGPU/GlobalISel: Fix selection of scalar f64 G_FABS

[Jay Foad via Phabricator via llvm-commits]

foad added inline comments.


================
Comment at: llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp:1940-1942
   if (!RBI.constrainGenericRegister(Src, AMDGPU::SReg_64RegClass, *MRI) ||
       !RBI.constrainGenericRegister(Dst, AMDGPU::SReg_64RegClass, *MRI))
     return false;
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Why is this needed here but not in selectG_FABS?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D77653/new/

https://reviews.llvm.org/D77653