[llvm] [LoopSimplifyCFG] Fix SCEV invalidation after removing dead exit (PR #127536)

[Nikita Popov via llvm-commits]

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@@ -370,6 +370,7 @@ class ConstantTerminatorFoldingImpl {
 
       for (Instruction *I : DeadInstructions) {
         SE.forgetBlockAndLoopDispositions(I);
+        SE.forgetValue(I);
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nikic wrote:

If we call forgetValue(), we should drop forgetBlockAndLoopDispositions(), as forgetValue() already takes care of this.

https://github.com/llvm/llvm-project/pull/127536