Derive MDNode from MetadataBase instead of Constant. Emit MDNodes into METADATA_BLOCK...

[oota-llvm.git] / include / llvm / GlobalVariable.h

diff --git a/include/llvm/GlobalVariable.h b/include/llvm/GlobalVariable.h
index 1f9bfd4f5080fd2c003d6d71cdb92aaa76d0b8db..28eaa624e9d2b2e710cce9d0f0568748712b5696 100644 (file)
--- a/include/llvm/GlobalVariable.h
+++ b/include/llvm/GlobalVariable.h
@@ -28,7 +28,7 @@ namespace llvm {
 
 class Module;
 class Constant;
-class PointerType;
+class LLVMContext;
 template<typename ValueSubClass, typename ItemParentClass>
   class SymbolTableListTraits;
 
@@ -50,15 +50,16 @@ public:
   }
   /// GlobalVariable ctor - If a parent module is specified, the global is
   /// automatically inserted into the end of the specified modules global list.
-  GlobalVariable(const Type *Ty, bool isConstant, LinkageTypes Linkage,
+  GlobalVariable(LLVMContext &Context, const Type *Ty, bool isConstant,
+                 LinkageTypes Linkage,
                  Constant *Initializer = 0, const std::string &Name = "",
-                 Module *Parent = 0, bool ThreadLocal = false,
-                 unsigned AddressSpace = 0);
+                 bool ThreadLocal = false, unsigned AddressSpace = 0);
   /// GlobalVariable ctor - This creates a global and inserts it before the
   /// specified other global.
-  GlobalVariable(const Type *Ty, bool isConstant, LinkageTypes Linkage,
-                 Constant *Initializer, const std::string &Name,
-                 GlobalVariable *InsertBefore, bool ThreadLocal = false,
+  GlobalVariable(Module &M, const Type *Ty, bool isConstant,
+                 LinkageTypes Linkage, Constant *Initializer,
+                 const std::string &Name,
+                 GlobalVariable *InsertBefore = 0, bool ThreadLocal = false,
                  unsigned AddressSpace = 0);
 
   ~GlobalVariable() {
@@ -79,6 +80,15 @@ public:
   ///
   inline bool hasInitializer() const { return !isDeclaration(); }
 
+  /// hasDefinitiveInitializer - Whether the global variable has an initializer,
+  /// and this is the initializer that will be used in the final executable.
+  inline bool hasDefinitiveInitializer() const {
+    return hasInitializer() &&
+      // The initializer of a global variable with weak linkage may change at
+      // link time.
+      !mayBeOverridden();
+  }
+
   /// getInitializer - Return the initializer for this global variable.  It is
   /// illegal to call this method if the global is external, because we cannot
   /// tell what the value is initialized to!