[PATCH] D13922: Restrict tail duplication in the presence of subregisters

[Krzysztof Parzyszek via llvm-commits]

kparzysz added a comment.

The phi operands are added by the SSA updater.  I don't think it's prepared to handle subregisters.  I remember that I had tried to fix it, but I gave up---it seemed like too much work at the time.


Repository:
  rL LLVM

http://reviews.llvm.org/D13922