[PATCH] D32563: Add LiveRangeShrink pass to shrink live range within BB.

[Andrew Trick via Phabricator via llvm-commits]

atrick added a comment.

I think the algorithm needs to be explained. It seems reasonable to argue that single def/use live ranges should be kept short. But is there any reason at all to run this before other IR passes?  It seems natural to run this after machine LICM and Sinking.


https://reviews.llvm.org/D32563