1 files changed, 16 insertions, 1 deletions
diff --git a/contrib/llvm-project/lld/MachO/InputFiles.h b/contrib/llvm-project/lld/MachO/InputFiles.h
index ea6802814e4c..89172922a0a7 100644
--- a/contrib/llvm-project/lld/MachO/InputFiles.h
+++ b/contrib/llvm-project/lld/MachO/InputFiles.h
@@ -219,10 +219,13 @@ public:
   explicit DylibFile(const llvm::MachO::InterfaceFile &interface,
                      DylibFile *umbrella, bool isBundleLoader,
                      bool explicitlyLinked);
+  explicit DylibFile(DylibFile *umbrella);
 
   void parseLoadCommands(MemoryBufferRef mb);
   void parseReexports(const llvm::MachO::InterfaceFile &interface);
   bool isReferenced() const { return numReferencedSymbols > 0; }
+  bool isExplicitlyLinked() const;
+  void setExplicitlyLinked() { explicitlyLinked = true; }
 
   static bool classof(const InputFile *f) { return f->kind() == DylibKind; }
 
@@ -239,14 +242,26 @@ public:
   bool forceNeeded = false;
   bool forceWeakImport = false;
   bool deadStrippable = false;
-  bool explicitlyLinked = false;
+
+private:
+  bool explicitlyLinked = false; // Access via isExplicitlyLinked().
+
+public:
   // An executable can be used as a bundle loader that will load the output
   // file being linked, and that contains symbols referenced, but not
   // implemented in the bundle. When used like this, it is very similar
   // to a dylib, so we've used the same class to represent it.
   bool isBundleLoader;
 
+  // Synthetic Dylib objects created by $ld$previous symbols in this dylib.
+  // Usually empty. These synthetic dylibs won't have synthetic dylibs
+  // themselves.
+  SmallVector<DylibFile *, 2> extraDylibs;
+
 private:
+  DylibFile *getSyntheticDylib(StringRef installName, uint32_t currentVersion,
+                               uint32_t compatVersion);
+
   bool handleLDSymbol(StringRef originalName);
   void handleLDPreviousSymbol(StringRef name, StringRef originalName);
   void handleLDInstallNameSymbol(StringRef name, StringRef originalName);