X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FGlobalValue.h;h=8fb5580d0d71099602df1cebcacdc30ad0a53077;hb=0f123cf732ad249117b7471e37bf819633b76a6e;hp=fe43ed4f69f80dee4fd3895823a18b8cbcd2f35e;hpb=afba8fe662d65b25b4baf46bb26cc18e1f9cc0a5;p=oota-llvm.git

diff --git a/include/llvm/GlobalValue.h b/include/llvm/GlobalValue.h
index fe43ed4f69f..8fb5580d0d7 100644
--- a/include/llvm/GlobalValue.h
+++ b/include/llvm/GlobalValue.h
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -35,10 +35,12 @@ public:
     WeakLinkage,        ///< Keep one copy of named function when linking (weak)
     AppendingLinkage,   ///< Special purpose, only applies to global arrays
     InternalLinkage,    ///< Rename collisions when linking (static functions)
+    PrivateLinkage,     ///< Like Internal, but omit from symbol table
     DLLImportLinkage,   ///< Function to be imported from DLL
     DLLExportLinkage,   ///< Function to be accessible from DLL
     ExternalWeakLinkage,///< ExternalWeak linkage description
-    GhostLinkage        ///< Stand-in functions for streaming fns from BC files    
+    GhostLinkage,       ///< Stand-in functions for streaming fns from BC files
+    CommonLinkage       ///< Tentative definitions
   };
 
   /// @brief An enumeration for the kinds of visibility of global values.
@@ -49,9 +51,9 @@ public:
   };
 
 protected:
-  GlobalValue(const Type *Ty, ValueTy vty, Use *Ops, unsigned NumOps,
+  GlobalValue(const Type *ty, ValueTy vty, Use *Ops, unsigned NumOps,
               LinkageTypes linkage, const std::string &name = "")
-    : Constant(Ty, vty, Ops, NumOps), Parent(0),
+    : Constant(ty, vty, Ops, NumOps), Parent(0),
       Linkage(linkage), Visibility(DefaultVisibility), Alignment(0) {
     if (!name.empty()) setName(name);
   }
@@ -100,14 +102,34 @@ public:
   bool hasExternalLinkage()   const { return Linkage == ExternalLinkage; }
   bool hasLinkOnceLinkage()   const { return Linkage == LinkOnceLinkage; }
   bool hasWeakLinkage()       const { return Linkage == WeakLinkage; }
+  bool hasCommonLinkage()     const { return Linkage == CommonLinkage; }
   bool hasAppendingLinkage()  const { return Linkage == AppendingLinkage; }
   bool hasInternalLinkage()   const { return Linkage == InternalLinkage; }
+  bool hasPrivateLinkage()    const { return Linkage == PrivateLinkage; }
+  bool hasLocalLinkage()      const {
+    return Linkage == InternalLinkage || Linkage == PrivateLinkage;
+  }
   bool hasDLLImportLinkage()  const { return Linkage == DLLImportLinkage; }
   bool hasDLLExportLinkage()  const { return Linkage == DLLExportLinkage; }
   bool hasExternalWeakLinkage() const { return Linkage == ExternalWeakLinkage; }
+  bool hasGhostLinkage()      const { return Linkage == GhostLinkage; }
   void setLinkage(LinkageTypes LT) { Linkage = LT; }
   LinkageTypes getLinkage() const { return Linkage; }
 
+  /// mayBeOverridden - Whether the definition of this global may be replaced
+  /// at link time.  For example, if a function has weak linkage then the code
+  /// defining it may be replaced by different code.
+  bool mayBeOverridden() const {
+    return (Linkage == WeakLinkage ||
+            Linkage == LinkOnceLinkage ||
+            Linkage == CommonLinkage ||
+            Linkage == ExternalWeakLinkage);
+  }
+
+  /// copyAttributesFrom - copy all additional attributes (those not needed to
+  /// create a GlobalValue) from the GlobalValue Src to this one.
+  virtual void copyAttributesFrom(const GlobalValue *Src);
+
   /// hasNotBeenReadFromBitcode - If a module provider is being used to lazily
   /// stream in functions from disk, this method can be used to check to see if
   /// the function has been read in yet or not.  Unless you are working on the
@@ -126,6 +148,14 @@ public:
   /// value is outside of the current translation unit...
   virtual bool isDeclaration() const = 0;
 
+  /// removeFromParent - This method unlinks 'this' from the containing module,
+  /// but does not delete it.
+  virtual void removeFromParent() = 0;
+
+  /// eraseFromParent - This method unlinks 'this' from the containing module
+  /// and deletes it.
+  virtual void eraseFromParent() = 0;
+
   /// getParent - Get the module that this global value is contained inside
   /// of...
   inline Module *getParent() { return Parent; }