[Loops] Use forgetLcssaPhiWithNewPredecessor() in more places

Use the more aggressive invalidation method in a number of places
that add incoming values to lcssa phi nodes. It is likely that
it's possible to construct cases with incorrect SCEV preservation
similar to https://github.com/llvm/llvm-project/issues/109333 for
these.

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/Transforms/Utils/LoopVersioning.cpp b/llvm/lib/Transforms/Utils/LoopVersioning.cpp
index af2ed62..8f8c40a 100644
--- a/llvm/lib/Transforms/Utils/LoopVersioning.cpp
+++ b/llvm/lib/Transforms/Utils/LoopVersioning.cpp
@@ -137,7 +137,7 @@ void LoopVersioning::addPHINodes(
     // original loop.
     for (auto I = PHIBlock->begin(); (PN = dyn_cast<PHINode>(I)); ++I) {
       if (PN->getIncomingValue(0) == Inst) {
-        SE->forgetValue(PN);
+        SE->forgetLcssaPhiWithNewPredecessor(VersionedLoop, PN);
         break;
       }
     }