Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch

llvm-svn: 146960
diff --git a/llvm/lib/CodeGen/Spiller.cpp b/llvm/lib/CodeGen/Spiller.cpp
index 9083804..09fc83b 100644
--- a/llvm/lib/CodeGen/Spiller.cpp
+++ b/llvm/lib/CodeGen/Spiller.cpp
@@ -185,6 +185,8 @@
 
 } // end anonymous namespace
 
+void Spiller::anchor() { }
+
 llvm::Spiller* llvm::createSpiller(MachineFunctionPass &pass,
                                    MachineFunction &mf,
                                    VirtRegMap &vrm) {