[llvm] [ABI][AMDGPU] Add AMDGPU target ABI classifier to the LLVM ABI library (PR #220177)

[via llvm-commits]

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@@ -92,6 +92,10 @@ class TargetInfo {
   /// return Ty unchanged.
   LLVM_ABI const Type *useFirstFieldIfTransparentUnion(const Type *Ty) const;
 
+  /// If the record reduces to a single scalar element,
+  /// return that element type; otherwise null.
+  LLVM_ABI const Type *isSingleElementStruct(const Type *Ty) const;
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skc7 wrote:

#224994 is merged. Rebased this PR to latest main and this now uses `isSingleElementStruct` from `TargetInfo`.

https://github.com/llvm/llvm-project/pull/220177