[clang] [HLSL] Allow arrays to copy-initialize (PR #127557)

[Chris B via cfe-commits]

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@@ -6585,6 +6585,18 @@ void InitializationSequence::InitializeFrom(Sema &S,
       }
     }
 
+    if (S.getLangOpts().HLSL && Initializer && isa<ConstantArrayType>(DestAT)) {
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llvm-beanz wrote:

Looking at this a bit. `canPerformArrayCopy` fails in cases that would otherwise be valid in HLSL. At least for HLSL today we can always copy an array if the source and destination type are the same, so we don't need to check that.

https://github.com/llvm/llvm-project/pull/127557