[clang] [HLSL] Implement array temporary support (PR #79382)

[Eli Friedman via cfe-commits]

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@@ -1126,6 +1126,7 @@ class ConstExprEmitter :
     case CK_NonAtomicToAtomic:
     case CK_NoOp:
     case CK_ConstructorConversion:
+    case CK_HLSLArrayRValue:
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efriedma-quic wrote:

We shouldn't accept CK_HLSLArrayRValue casts here (or if we do, we need to do something different with them).

https://github.com/llvm/llvm-project/pull/79382