[PATCH] D20907: [IfConversion] Bugfix: don't add Undef flag on use if reg is live.

[Quentin Colombet via llvm-commits]

qcolombet added a comment.

Hi Jonas,

Let us step back a little bit. I actually did not read any code when commenting the first time, I was clarifying the intended behavior of the undef flag wrt liveness :).
Now, I have read the relevant part of IfConversion and I can give more appropriate guidance.


http://reviews.llvm.org/D20907