[PATCH] D29105: Fix regalloc assignment of overlapping registers

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added a comment.

This commit broke an internal target for us as it can choose subregister indexes which are not compatible with a given register class. Maybe we should go for the simpler `LI->clearSubRanges()` instead of the whole subreg aware copying for now even though that may pessimize the code.


Repository:
  rL LLVM

https://reviews.llvm.org/D29105