[llvm] [VPlan] Support VPWidenIntOrFpInductionRecipes with EVL tail folding (PR #144666)

[Philip Reames via llvm-commits]

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@@ -165,18 +166,30 @@ bool VPlanVerifier::verifyEVLRecipe(const VPInstruction &EVL) const {
         .Case<VPInstruction>([&](const VPInstruction *I) {
           if (I->getOpcode() == Instruction::PHI)
             return VerifyEVLUse(*I, 1);
-          if (I->getOpcode() != Instruction::Add) {
-            errs() << "EVL is used as an operand in non-VPInstruction::Add\n";
+          switch (I->getOpcode()) {
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preames wrote:

What purpose does this switch serve?  It seems to be the same functionally as the prior if-clause?

https://github.com/llvm/llvm-project/pull/144666