If a method is virtual and the class key function is in another file, emit the method as available_externally.

Fixes PR6747

llvm-svn: 101757

1 files changed, 8 insertions, 1 deletions

diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index ab2f1c7aa2e..035e57fd0b2 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -314,7 +314,14 @@ GetLinkageForFunction(ASTContext &Context, const FunctionDecl *FD,
   if (FD->getTemplateSpecializationKind() 
                                        == TSK_ExplicitInstantiationDeclaration)
     return CodeGenModule::GVA_C99Inline;
-  
+
+  if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) {
+    const CXXRecordDecl *RD = MD->getParent();
+    if (MD->isVirtual() &&
+	CodeGenVTables::isKeyFunctionInAnotherTU(Context, RD))
+      return CodeGenModule::GVA_C99Inline;
+  }  
+
   return CodeGenModule::GVA_CXXInline;
 }