[PATCH] D31908: [AntiDepBreaker] Don't rename callee saved register restore instruction

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added a comment.

In https://reviews.llvm.org/D31908#741341, @kparzysz wrote:

> We add all callee saved registers as live-in on all paths from the restores to the exit, so this problem shouldn't affect us.  Actually the anti-dep breaker was the reason why we did it in the first place.


All callee saves? That would be new to me. I think we only do that for callee saves that are saved/restored *somewhere* in the function, the rest is considered "pristine" and not explicitely mentioned in the live-in lists.


https://reviews.llvm.org/D31908