[PATCH] D40298: [PowerPC] Merge register copies

[Hiroshi Inoue via Phabricator via llvm-commits]

inouehrs updated this revision to Diff 123881.
inouehrs added a comment.

updated based on comments from @jtony


https://reviews.llvm.org/D40298

Files:
  lib/Target/PowerPC/PPCRegCopyElim.cpp
  test/CodeGen/PowerPC/redundant_regcopy_3.mir

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