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

[Florian Hahn via llvm-commits]

================
@@ -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()) {
+          case Instruction::Add:
+            break;
+          case Instruction::UIToFP:
+          case Instruction::Trunc:
+          case Instruction::ZExt:
+          case Instruction::Mul:
+          case Instruction::FMul:
+            if (!VerifyLate) {
+              errs() << "EVL used by unexpected VPInstruction\n";
+              return false;
+            }
----------------
fhahn wrote:

```suggestion
            // Opcodes above can only use EVL after wide inductions have been expanded.
            if (!VerifyLate) {
              errs() << "EVL used by unexpected VPInstruction\n";
              return false;
            }
```

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