Add new linkage types to support a real frontend


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5786 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bytecode/Reader/ConstantReader.cpp b/lib/Bytecode/Reader/ConstantReader.cpp
index d2818ef..d1c8644 100644
--- a/lib/Bytecode/Reader/ConstantReader.cpp
+++ b/lib/Bytecode/Reader/ConstantReader.cpp
@@ -352,7 +352,8 @@
           
           // Create a placeholder for the global variable reference...
           GlobalVariable *GVar =
-            new GlobalVariable(PT->getElementType(), false, true);
+            new GlobalVariable(PT->getElementType(), false,
+                               GlobalValue::InternalLinkage);
           
           // Keep track of the fact that we have a forward ref to recycle it
           GlobalRefs.insert(std::make_pair(std::make_pair(PT, Slot), GVar));