[PATCH] D42551: [Debug] Add dbg.value intrinsics for PHIs created during LCSSA.

[Matt Davis via Phabricator via llvm-commits]

mattd added a comment.

@dberlin, thanks for the comment. I do not have numbers for any of the cases where LCSSA is known to be a bottleneck, but I do see your point.  Even on a small test case it is one of the more expensive passes, but that sample is probably too small to make any judgement upon.


https://reviews.llvm.org/D42551