[PATCH] critical-anti-dependency breaker: don't use reg def info from kill insts (PR20308)

[Sanjay Patel]

MachineCopyPropagation appears to also be the root cause for:
http://llvm.org/bugs/show_bug.cgi?id=18663

This was patched in the AggressiveAntiDepBreaker by Will with:
http://llvm.org/viewvc/llvm-project?view=revision&revision=214429

I don't see a PR for MachineCopyPropagation yet...

http://reviews.llvm.org/D4977