[llvm] [VPlan] Use VPInstruction for VPScalarPHIRecipe. (NFCI) (PR #129767)

[via llvm-commits]

================
@@ -143,12 +143,13 @@ bool VPlanVerifier::verifyEVLRecipe(const VPInstruction &EVL) const {
         })
         .Case<VPWidenStoreEVLRecipe, VPReductionEVLRecipe>(
             [&](const VPRecipeBase *S) { return VerifyEVLUse(*S, 2); })
-        .Case<VPWidenLoadEVLRecipe, VPReverseVectorPointerRecipe,
-              VPScalarPHIRecipe>(
+        .Case<VPWidenLoadEVLRecipe, VPReverseVectorPointerRecipe>(
             [&](const VPRecipeBase *R) { return VerifyEVLUse(*R, 1); })
         .Case<VPScalarCastRecipe>(
             [&](const VPScalarCastRecipe *S) { return VerifyEVLUse(*S, 0); })
         .Case<VPInstruction>([&](const VPInstruction *I) {
+          if (I->getOpcode() == Instruction::PHI)
+            return VerifyEVLUse(*I, I->getNumOperands() - 1);
----------------
ayalz wrote:

Using `I->getNumOperands() - 1` is better than using 1 as done for VPScalarPHIRecipe?

https://github.com/llvm/llvm-project/pull/129767