[clang] [Clang] Make matrix type trivially copyable (PR #193634)

[Farzon Lotfi via cfe-commits]

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@@ -3016,6 +3011,8 @@ class alignas(TypeAlignment) Type : public ExtQualsTypeCommonBase {
   /// qualifiers from the outermost type.
   const ArrayType *getAsArrayTypeUnsafe() const;
 
+  const MatrixType *getAsMatrixTypeUnsafe() const;
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farzonl wrote:

I see you are copying the pattern started by `getAsArrayTypeUnsafe`. Are you sure that pattern is still the desired pattern for effectively doing a `getAs<>`?

https://github.com/llvm/llvm-project/pull/193634