Update clang to r339409.

Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm/DebugInfo/DWARF/DWARFCompileUnit.h b/linux-x64/clang/include/llvm/DebugInfo/DWARF/DWARFCompileUnit.h
index a18adf8..27d56d7 100644
--- a/linux-x64/clang/include/llvm/DebugInfo/DWARF/DWARFCompileUnit.h
+++ b/linux-x64/clang/include/llvm/DebugInfo/DWARF/DWARFCompileUnit.h
@@ -18,20 +18,20 @@
 class DWARFCompileUnit : public DWARFUnit {
 public:
   DWARFCompileUnit(DWARFContext &Context, const DWARFSection &Section,
+                   const DWARFUnitHeader &Header,
                    const DWARFDebugAbbrev *DA, const DWARFSection *RS,
                    StringRef SS, const DWARFSection &SOS,
                    const DWARFSection *AOS, const DWARFSection &LS, bool LE,
-                   bool IsDWO, const DWARFUnitSectionBase &UnitSection,
-                   const DWARFUnitIndex::Entry *Entry)
-      : DWARFUnit(Context, Section, DA, RS, SS, SOS, AOS, LS, LE, IsDWO,
-                  UnitSection, Entry) {}
+                   bool IsDWO, const DWARFUnitVector &UnitVector)
+      : DWARFUnit(Context, Section, Header, DA, RS, SS, SOS, AOS, LS, LE, IsDWO,
+                  UnitVector) {}
 
-  // VTable anchor.
+  /// VTable anchor.
   ~DWARFCompileUnit() override;
-
-  void dump(raw_ostream &OS, DIDumpOptions DumpOpts);
-
-  static const DWARFSectionKind Section = DW_SECT_INFO;
+  /// Dump this compile unit to \p OS.
+  void dump(raw_ostream &OS, DIDumpOptions DumpOpts) override;
+  /// Enable LLVM-style RTTI.
+  static bool classof(const DWARFUnit *U) { return !U->isTypeUnit(); }
 };
 
 } // end namespace llvm