Adding dllimport, dllexport and external weak linkage types.
DLL* linkages got full (I hope) codegeneration support in C & both x86
assembler backends.
External weak linkage added for future use, we don't provide any
codegeneration, etc. support for it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30374 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm2cpp/CppWriter.cpp b/tools/llvm2cpp/CppWriter.cpp
index 0438a7e..66ed5b2 100644
--- a/tools/llvm2cpp/CppWriter.cpp
+++ b/tools/llvm2cpp/CppWriter.cpp
@@ -284,6 +284,12 @@
       Out << "GlobalValue::AppendingLinkage"; break;
     case GlobalValue::ExternalLinkage: 
       Out << "GlobalValue::ExternalLinkage"; break;
+    case GlobalValue::DLLImportLinkage: 
+      Out << "GlobalValue::DllImportLinkage"; break;
+    case GlobalValue::DLLExportLinkage: 
+      Out << "GlobalValue::DllExportLinkage"; break;
+    case GlobalValue::ExternalWeakLinkage: 
+      Out << "GlobalValue::ExternalWeakLinkage"; break;
     case GlobalValue::GhostLinkage:
       Out << "GlobalValue::GhostLinkage"; break;
   }