[llvm] [VPlan] Handle VPWidenCastRecipe without underlying value in EVL transform (PR #120194)

[Mel Chen via llvm-commits]

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@@ -1506,18 +1506,17 @@ static void transformRecipestoEVLRecipes(VPlan &Plan, VPValue &EVL) {
                   })
               .Case<VPWidenCastRecipe>(
                   [&](VPWidenCastRecipe *CInst) -> VPRecipeBase * {
-                    auto *CI = dyn_cast<CastInst>(CInst->getUnderlyingInstr());
                     Intrinsic::ID VPID =
-                        VPIntrinsic::getForOpcode(CI->getOpcode());
+                        VPIntrinsic::getForOpcode(CInst->getOpcode());
                     assert(VPID != Intrinsic::not_intrinsic &&
                            "Expected vp.casts Instrinsic");
 
                     SmallVector<VPValue *> Ops(CInst->operands());
                     assert(VPIntrinsic::getMaskParamPos(VPID) &&
                            VPIntrinsic::getVectorLengthParamPos(VPID) &&
                            "Expected VP intrinsic");
-                    VPValue *Mask = Plan.getOrAddLiveIn(ConstantInt::getTrue(
-                        IntegerType::getInt1Ty(CI->getContext())));
+                    VPValue *Mask = Plan.getOrAddLiveIn(
+                        ConstantInt::getTrue(IntegerType::getInt1Ty(Ctx)));
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Mel-Chen wrote:

ConstantInt::getTrue(Ctx));

https://github.com/llvm/llvm-project/pull/120194