[llvm] [VPlan] Consistently use (Part, 0) for first lane scalar values (PR #80271)

[Florian Hahn via llvm-commits]

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@@ -334,6 +334,13 @@ Value *VPTransformState::get(VPValue *Def, unsigned Part) {
   return VectorValue;
 }
 
+Value *VPTransformState::get(VPValue *Def, unsigned Part,
+                             unsigned NeedsScalar) {
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fhahn wrote:

Updated to have a single get() that takes part and IsScalar=false as default arg.

https://github.com/llvm/llvm-project/pull/80271