[PATCH] D64155: GlobalISel: Handle widenScalar of arbitrary G_MERGE_VALUES sources

[Matt Arsenault via Phabricator via llvm-commits]

arsenm updated this revision to Diff 208566.
arsenm added a comment.

Add example comments


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D64155/new/

https://reviews.llvm.org/D64155

Files:
  include/llvm/Support/MathExtras.h
  lib/CodeGen/GlobalISel/LegalizerHelper.cpp
  lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
  test/CodeGen/AMDGPU/GlobalISel/legalize-merge-values.mir
  unittests/CodeGen/GlobalISel/LegalizerHelperTest.cpp

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