[Clang][AST][NFC] Resolve FIXME: Remove unused QualType ElementType member from the ASTContext class.

[gAlfonso-bit]

Summary

It is completely unused and not needed to be kept, so let us remove it.

[gAlfonso-bit]

This comment was removed by gAlfonso-bit.

[gAlfonso-bit]

This comment was removed by gAlfonso-bit.

[gAlfonso-bit]

This comment was removed by gAlfonso-bit.

[gAlfonso-bit]

This comment was removed by gAlfonso-bit.

[c-rhodes]

In D107719#2945656, @gAlfonso-bit wrote:

Not sure about the timing of base patch, but maybe this patch is also candidate for llvm 13 (backport)?

What's the value in backporting it to 13? It's NFC

[RKSimon]

@gAlfonso-bit Do you have commit access? I don't think there's any reason to merge this - it fixes no bug or regression - it's just a cleanup.

[gAlfonso-bit]

This comment was removed by gAlfonso-bit.

[gAlfonso-bit]

This comment was removed by gAlfonso-bit.

[gAlfonso-bit]

This comment was removed by gAlfonso-bit.

[gAlfonso-bit]

This comment was removed by gAlfonso-bit.

clang/include/clang/AST/Type.h

public:
   }
 };
 
 /// Represents a concrete matrix type with constant number of rows and columns
 class ConstantMatrixType final : public MatrixType {
 protected:
   friend class ASTContext;
 
-  /// The element type of the matrix.
-  // FIXME: Appears to be unused? There is also MatrixType::ElementType...
-  QualType ElementType;
-
   /// Number of rows and columns.
   unsigned NumRows;
   unsigned NumColumns;
 
   static constexpr unsigned MaxElementsPerDimension = (1 << 20) - 1;
 
   ConstantMatrixType(QualType MatrixElementType, unsigned NRows,
                      unsigned NColumns, QualType CanonElementType);