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

[Farzon Lotfi via cfe-commits]

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@@ -3190,6 +3175,8 @@ class ASTContext : public RefCountedBase<ASTContext> {
   /// actually be an array type).
   QualType getBaseElementType(QualType QT) const;
 
+  QualType getMatrixBaseElementType(QualType QT) const;
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farzonl wrote:

why can't we just call `getBaseElementType`? The matrix type has a `getElementType()` It isn't clear to me why we need special getters.

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