[PATCH] D57033: [SSAUpdater] Handle case with single available value faster.

[Florian Hahn via Phabricator via llvm-commits]

fhahn added a comment.

In D57033#1366842 <https://reviews.llvm.org/D57033#1366842>, @efriedma wrote:

> If LCSSA just doesn't care that it's creating dead references to variables instead of undefs, it would be faster to completely skip the check.  Otherwise, sure, that makes sense.


LCSSA doesn't care about it, but I thought it might be better to prune the use list?


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https://reviews.llvm.org/D57033