[PATCH] D48102: Improve handling of COPY instructions with identical value numbers

[Krzysztof Parzyszek via Phabricator via llvm-commits]

kparzysz added a comment.

This shouldn't be necessary.  Try returning "true" from eliminateUndefCopy after generating an IMPLICIT_DEF.


Repository:
  rL LLVM

https://reviews.llvm.org/D48102