Revert "[Clang] Implement the 'counted_by' attribute (#76348)"

This reverts commit fefdef808c230c79dca2eb504490ad0f17a765a5.

Breaks check-clang, see
https://github.com/llvm/llvm-project/pull/76348#issuecomment-1886029515

Also revert follow-on "[Clang] Update 'counted_by' documentation"

This reverts commit 4a3fb9ce27dda17e97341f28005a28836c909cfc.

1 files changed, 0 insertions, 22 deletions

diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index 143ad64..07c7678 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -3073,25 +3073,6 @@ public:
   /// this expression is used as an lvalue, for instance in "&Arr[Idx]".
   void EmitBoundsCheck(const Expr *E, const Expr *Base, llvm::Value *Index,
                        QualType IndexType, bool Accessed);
-  void EmitBoundsCheckImpl(const Expr *E, llvm::Value *Bound,
-                           llvm::Value *Index, QualType IndexType,
-                           QualType IndexedType, bool Accessed);
-
-  // Find a struct's flexible array member. It may be embedded inside multiple
-  // sub-structs, but must still be the last field.
-  const FieldDecl *FindFlexibleArrayMemberField(ASTContext &Ctx,
-                                                const RecordDecl *RD,
-                                                StringRef Name,
-                                                uint64_t &Offset);
-
-  /// Find the FieldDecl specified in a FAM's "counted_by" attribute. Returns
-  /// \p nullptr if either the attribute or the field doesn't exist.
-  const FieldDecl *FindCountedByField(const FieldDecl *FD);
-
-  /// Build an expression accessing the "counted_by" field.
-  llvm::Value *EmitCountedByFieldExpr(const Expr *Base,
-                                      const FieldDecl *FAMDecl,
-                                      const FieldDecl *CountDecl);
 
   llvm::Value *EmitScalarPrePostIncDec(const UnaryOperator *E, LValue LV,
                                        bool isInc, bool isPre);
@@ -4892,9 +4873,6 @@ private:
                                      llvm::Value *EmittedE,
                                      bool IsDynamic);
 
-  llvm::Value *emitFlexibleArrayMemberSize(const Expr *E, unsigned Type,
-                                           llvm::IntegerType *ResType);
-
   void emitZeroOrPatternForAutoVarInit(QualType type, const VarDecl &D,
                                        Address Loc);