[clang] Enable matrices in HLSL (PR #111415)

[Chris B via cfe-commits]

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@@ -1381,7 +1381,7 @@ void ASTContext::InitBuiltinTypes(const TargetInfo &Target,
   if (LangOpts.OpenACC && !LangOpts.OpenMP) {
     InitBuiltinType(ArraySectionTy, BuiltinType::ArraySection);
   }
-  if (LangOpts.MatrixTypes)
+  if (LangOpts.MatrixTypes || LangOpts.HLSL)
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llvm-beanz wrote:

We can add `MatrixTypes` to the definition of HLSL in LangStandards.def, which is probably a safer approach to this.

https://github.com/llvm/llvm-project/pull/111415