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

[Tim Renouf via Phabricator via llvm-commits]

tpr added a comment.

Your 'Fix the "cannot join subranges" issue caused by redefining an undef value' does not seem to fix all the cases covered by https://reviews.llvm.org/D35073, so I suggest removing that part of the fix again and moving the discussion on how to fix that problem onto https://reviews.llvm.org/D35073. (I realize you had to try and fix it blind as I was unable to give you my test case.)


Repository:
  rL LLVM

https://reviews.llvm.org/D48102