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diff --git a/clang/include/clang/InstallAPI/FrontendRecords.h b/clang/include/clang/InstallAPI/FrontendRecords.h
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+++ b/clang/include/clang/InstallAPI/FrontendRecords.h
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+//===- InstallAPI/FrontendRecords.h ------------------------------*- C++-*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_INSTALLAPI_FRONTENDRECORDS_H
+#define LLVM_CLANG_INSTALLAPI_FRONTENDRECORDS_H
+
+#include "clang/AST/Availability.h"
+#include "clang/AST/DeclObjC.h"
+#include "clang/InstallAPI/MachO.h"
+
+namespace clang {
+namespace installapi {
+
+/// Frontend information captured about records.
+struct FrontendAttrs {
+  const AvailabilityInfo Avail;
+  const Decl *D;
+  const HeaderType Access;
+};
+
+// Represents a collection of frontend records for a library that are tied to a
+// darwin target triple.
+class FrontendRecordsSlice : public llvm::MachO::RecordsSlice {
+public:
+  FrontendRecordsSlice(const llvm::Triple &T)
+      : llvm::MachO::RecordsSlice({T}) {}
+
+  /// Add non-ObjC global record with attributes from AST.
+  ///
+  /// \param Name The name of symbol.
+  /// \param Linkage The linkage of symbol.
+  /// \param GV The kind of global.
+  /// \param Avail The availability information tied to the active target
+  /// triple.
+  /// \param D The pointer to the declaration from traversing AST.
+  /// \param Access The intended access level of symbol.
+  /// \param Flags The flags that describe attributes of the symbol.
+  /// \param Inlined Whether declaration is inlined, only applicable to
+  /// functions.
+  /// \return The non-owning pointer to added record in slice.
+  GlobalRecord *addGlobal(StringRef Name, RecordLinkage Linkage,
+                          GlobalRecord::Kind GV,
+                          const clang::AvailabilityInfo Avail, const Decl *D,
+                          const HeaderType Access,
+                          SymbolFlags Flags = SymbolFlags::None,
+                          bool Inlined = false);
+
+  /// Add ObjC Class record with attributes from AST.
+  ///
+  /// \param Name The name of class, not symbol.
+  /// \param Linkage The linkage of symbol.
+  /// \param Avail The availability information tied to the active target
+  /// triple.
+  /// \param D The pointer to the declaration from traversing AST.
+  /// \param Access The intended access level of symbol.
+  /// \param IsEHType Whether declaration has an exception attribute.
+  /// \return The non-owning pointer to added record in slice.
+  ObjCInterfaceRecord *addObjCInterface(StringRef Name, RecordLinkage Linkage,
+                                        const clang::AvailabilityInfo Avail,
+                                        const Decl *D, HeaderType Access,
+                                        bool IsEHType);
+
+  /// Add ObjC Category record with attributes from AST.
+  ///
+  /// \param ClassToExtend The name of class that is extended by category, not
+  /// symbol.
+  /// \param CategoryName The name of category, not symbol.
+  /// \param Avail The availability information tied
+  /// to the active target triple.
+  /// \param D The pointer to the declaration from traversing AST.
+  /// \param Access The intended access level of symbol.
+  /// \return The non-owning pointer to added record in slice.
+  ObjCCategoryRecord *addObjCCategory(StringRef ClassToExtend,
+                                      StringRef CategoryName,
+                                      const clang::AvailabilityInfo Avail,
+                                      const Decl *D, HeaderType Access);
+
+  /// Add ObjC IVar record with attributes from AST.
+  ///
+  /// \param Container The owning pointer for instance variable.
+  /// \param Name The name of ivar, not symbol.
+  /// \param Linkage The linkage of symbol.
+  /// \param Avail The availability information tied to the active target
+  /// triple.
+  /// \param D The pointer to the declaration from traversing AST.
+  /// \param Access The intended access level of symbol.
+  /// \param AC The access control tied to the ivar declaration.
+  /// \return The non-owning pointer to added record in slice.
+  ObjCIVarRecord *addObjCIVar(ObjCContainerRecord *Container,
+                              StringRef IvarName, RecordLinkage Linkage,
+                              const clang::AvailabilityInfo Avail,
+                              const Decl *D, HeaderType Access,
+                              const clang::ObjCIvarDecl::AccessControl AC);
+
+private:
+  /// Mapping of records stored in slice to their frontend attributes.
+  llvm::DenseMap<Record *, FrontendAttrs> FrontendRecords;
+};
+
+} // namespace installapi
+} // namespace clang
+
+#endif // LLVM_CLANG_INSTALLAPI_FRONTENDRECORDS_H