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

[Krzysztof Parzyszek via Phabricator via llvm-commits]

kparzysz updated this revision to Diff 151411.
kparzysz added a comment.

Properly extend liveness of a merged value when a redundant copy was erased.


Repository:
  rL LLVM

https://reviews.llvm.org/D48102

Files:
  lib/CodeGen/RegisterCoalescer.cpp
  test/CodeGen/AMDGPU/coalescing-with-subregs-in-loop-bug.mir

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D48102.151411.patch
Type: text/x-patch
Size: 15607 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20180614/b146515e/attachment.bin>