[llvm] [VPlan] Introduce VPlanConstantFolder (PR #125365)

[Florian Hahn via llvm-commits]

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@@ -66,6 +67,12 @@ class VPBuilder {
     return createInstruction(Opcode, ArrayRef<VPValue *>(Operands), DL, Name);
   }
 
+  VPValue *getOrAddLiveIn(Value *V) {
+    if (BB)
+      return BB->getPlan()->getOrAddLiveIn(V);
+    return new VPValue(V);
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fhahn wrote:

This will introduce a leak?

https://github.com/llvm/llvm-project/pull/125365