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

[Eli Friedman via cfe-commits]

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@@ -1442,6 +1445,7 @@ static bool castPreservesZero(const CastExpr *CE) {
   case CK_BitCast:
   case CK_ToUnion:
   case CK_ToVoid:
+  case CK_HLSLArrayRValue:
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efriedma-quic wrote:

Probably should be false, like other lvalue-to-rvalue casts?

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