[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/LoopUnrollRuntime.cpp b/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp
index 2d74b2b..5e2c153 100644
--- a/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp
+++ b/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp
@@ -146,7 +146,7 @@ static void ConnectProlog(Loop *L, Value *BECount, unsigned Count,
         PN.setIncomingValueForBlock(NewPreHeader, NewPN);
       else
         PN.addIncoming(NewPN, PrologExit);
-      SE.forgetValue(&PN);
+      SE.forgetLcssaPhiWithNewPredecessor(L, &PN);
     }
   }