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

[Krzysztof Parzyszek via Phabricator via llvm-commits]

kparzysz added a comment.

Could you add  "LIS->print(dbgs())" at the beginning of joinCopy and post the output with -debug-only=regalloc?  You can remove the unnecessary parts from the output.  For the copy that triggers the problem, I'd like to see all instructions using the registers from the copy and the debugging output from the coalescer.


Repository:
  rL LLVM

https://reviews.llvm.org/D48102