[clang] [Clang][AArch64] Fix Pure Scalables Types argument passing and return (PR #112747)

[Jonathan Thackray via cfe-commits]

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@@ -423,6 +510,19 @@ ABIArgInfo AArch64ABIInfo::classifyReturnType(QualType RetTy,
     // Homogeneous Floating-point Aggregates (HFAs) are returned directly.
     return ABIArgInfo::getDirect();
 
+  // In AAPCS return values of a Pure Scalable type are treated is a first named
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jthackray wrote:

nit: s/are treated is a/are treated as a/ ?

https://github.com/llvm/llvm-project/pull/112747