Max Kazantsev f2ac09bb54 [LoopSimplifyCFG] Don't delete LCSSA Phis ...

When removing edges, we also update Phi inputs and may end up removing
a Phi if it has only one input. We should not do it for edges that leave the current
loop because these Phis are LCSSA Phis and need to be preserved.

Thanks @dmgreen	for finding this!

Differential Revision: https://reviews.llvm.org/D54841


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@347484 91177308-0d34-0410-b5e6-96231b3b80d8

2018-11-23 07:56:47 +00:00

..

constant-fold-branch.ll

[NFC] Add verification flags to tests

2018-11-23 05:21:53 +00:00

lcssa.ll

[LoopSimplifyCFG] Don't delete LCSSA Phis

2018-11-23 07:56:47 +00:00

merge-header.ll

Update MemorySSA in LoopSimplifyCFG.

2018-08-22 20:10:21 +00:00

scev.ll

Update MemorySSA in LoopSimplifyCFG.

2018-08-22 20:10:21 +00:00