[PATCH] D111129: [AMDGPU][GlobalISel] Fix legalization of G_UMULH

[Jay Foad via Phabricator via llvm-commits]

foad created this revision.
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Scalarize before narrowing because the narrowing implementation does not
work on vectors. This matches what we do for regular G_MUL.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D111129

Files:
  llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-umulh.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-umulo.mir

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