[llvm] [VPlan] Use VPInstruction for uniform binops. (PR #141429)

[via llvm-commits]

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@@ -196,6 +200,15 @@ static bool sinkScalarOperands(VPlan &Plan) {
       SinkCandidate->replaceUsesWithIf(Clone, [SinkTo](VPUser &U, unsigned) {
         return cast<VPRecipeBase>(&U)->getParent() != SinkTo;
       });
+    } else {
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ayalz wrote:

Worth a comment how non-single-scalar VPInstructions are sunk.

https://github.com/llvm/llvm-project/pull/141429