[llvm] [VPlan] Relax type of DerivedIV start value (NFC) (PR #206464)

[Mel Chen via llvm-commits]

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@@ -330,6 +330,41 @@ TEST_F(VPVerifierTest, NonHeaderPHIInHeader) {
   delete PHINode;
 }
 
+TEST_F(VPVerifierTest, DerivedIVWithStartInLoopRegions) {
+  VPlan &Plan = getPlan();
+  auto *I32Ty = Type::getInt32Ty(C);
+  VPBasicBlock *Entry = Plan.getEntry();
+  VPBasicBlock *Latch = Plan.createVPBasicBlock("latch");
+  VPInstruction *DefI = new VPInstruction(
+      Instruction::Add, {Plan.getPoison(I32Ty), Plan.getPoison(I32Ty)},
+      VPIRFlags::getDefaultFlags(Instruction::Add));
+  Entry->appendRecipe(DefI);
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Mel-Chen wrote:

Is `DefI` necessary?

https://github.com/llvm/llvm-project/pull/206464