tree 1b8b9f176321e2bf91ed65e3747fab4bc02830ab
parent 9ceb192e14164ecf8a6f714a770c89765327c722
author Florian Hahn <flo@fhahn.com> 1597218367 +0100
committer Florian Hahn <flo@fhahn.com> 1597223022 +0100

[SCEV] Look through single value PHIs.

Now that SCEVExpander can preserve LCSSA form,
we do not have to worry about LCSSA form when
trying to look through PHIs. SCEVExpander will take
care of inserting LCSSA PHI nodes as required.

This increases precision of the analysis in some cases.

Reviewed By: mkazantsev, bmahjour

Differential Revision: https://reviews.llvm.org/D71539