Merge "Update prebuilt Clang to r353983." into p9.0HEADp9.0-backupp9.0

1 files changed, 69 insertions, 0 deletions

diff --git a/clang-r353983/include/lld/Core/SharedLibraryFile.h b/clang-r353983/include/lld/Core/SharedLibraryFile.h
new file mode 100644
index 00000000..846d1f22
--- /dev/null
+++ b/clang-r353983/include/lld/Core/SharedLibraryFile.h
@@ -0,0 +1,69 @@
+//===- Core/SharedLibraryFile.h - Models shared libraries as Atoms --------===//
+//
+// 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 LLD_CORE_SHARED_LIBRARY_FILE_H
+#define LLD_CORE_SHARED_LIBRARY_FILE_H
+
+#include "lld/Core/File.h"
+
+namespace lld {
+
+///
+/// The SharedLibraryFile subclass of File is used to represent dynamic
+/// shared libraries being linked against.
+///
+class SharedLibraryFile : public File {
+public:
+  static bool classof(const File *f) {
+    return f->kind() == kindSharedLibrary;
+  }
+
+  /// Check if the shared library exports a symbol with the specified name.
+  /// If so, return a SharedLibraryAtom which represents that exported
+  /// symbol.  Otherwise return nullptr.
+  virtual OwningAtomPtr<SharedLibraryAtom> exports(StringRef name) const = 0;
+
+  // Returns the install name.
+  virtual StringRef getDSOName() const = 0;
+
+  const AtomRange<DefinedAtom> defined() const override {
+    return _definedAtoms;
+  }
+
+  const AtomRange<UndefinedAtom> undefined() const override {
+    return _undefinedAtoms;
+  }
+
+  const AtomRange<SharedLibraryAtom> sharedLibrary() const override {
+    return _sharedLibraryAtoms;
+  }
+
+  const AtomRange<AbsoluteAtom> absolute() const override {
+    return _absoluteAtoms;
+  }
+
+  void clearAtoms() override {
+    _definedAtoms.clear();
+    _undefinedAtoms.clear();
+    _sharedLibraryAtoms.clear();
+    _absoluteAtoms.clear();
+  }
+
+protected:
+  /// only subclasses of SharedLibraryFile can be instantiated
+  explicit SharedLibraryFile(StringRef path) : File(path, kindSharedLibrary) {}
+
+  AtomVector<DefinedAtom> _definedAtoms;
+  AtomVector<UndefinedAtom> _undefinedAtoms;
+  AtomVector<SharedLibraryAtom> _sharedLibraryAtoms;
+  AtomVector<AbsoluteAtom> _absoluteAtoms;
+};
+
+} // namespace lld
+
+#endif // LLD_CORE_SHARED_LIBRARY_FILE_H