[llvm] [Codegen] Add a separate stack ID for scalable predicates (PR #142390)

[Benjamin Maxwell via llvm-commits]

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@@ -378,6 +378,7 @@ struct ScalarEnumerationTraits<TargetStackID::Value> {
     IO.enumCase(ID, "default", TargetStackID::Default);
     IO.enumCase(ID, "sgpr-spill", TargetStackID::SGPRSpill);
     IO.enumCase(ID, "scalable-vector", TargetStackID::ScalableVector);
+    IO.enumCase(ID, "scalable-pred-vector", TargetStackID::ScalablePredVector);
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MacDue wrote:

Done :+1: 

https://github.com/llvm/llvm-project/pull/142390