[llvm] [NFC][Scalarizer][TargetTransformInfo] Add `isVectorIntrinsicWithOverloadTypeAtArg` api (PR #114849)

[Greg Roth via llvm-commits]

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@@ -25,6 +25,14 @@ bool DirectXTTIImpl::isTargetIntrinsicWithScalarOpAtArg(Intrinsic::ID ID,
   }
 }
 
+bool DirectXTTIImpl::isVectorIntrinsicWithOverloadTypeAtArg(Intrinsic::ID ID,
+                                                            int ScalarOpdIdx) {
+  switch (ID) {
+  default:
+    return ScalarOpdIdx == -1;
+  }
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pow2clk wrote:

In case anyone else wonders why the switch statement is here, observe the follow-on in #114847

https://github.com/llvm/llvm-project/pull/114849