[llvm] [LV][EVL] Support call instruction with EVL-vectorization (PR #110412)

[Florian Hahn via llvm-commits]

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@@ -1024,6 +1033,18 @@ InstructionCost VPWidenIntrinsicRecipe::computeCost(ElementCount VF,
   // clear Arguments.
   // TODO: Rework TTI interface to be independent of concrete IR values.
   SmallVector<const Value *> Arguments;
+
+  Intrinsic::ID FID = VectorIntrinsicID;
+  unsigned NumOperands = getNumOperands();
+  if (VPIntrinsic::isVPIntrinsic(VectorIntrinsicID)) {
+    std::optional<Intrinsic::ID> ID =
+        VPIntrinsic::getFunctionalIntrinsicIDForVP(VectorIntrinsicID);
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fhahn wrote:

So this looks up the non-VP intrinsic ID and computes the cost using it? At least needs a comment, but if they have the same costs, the cost model should return the expected cost?

https://github.com/llvm/llvm-project/pull/110412