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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146960 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index 0c89a57..0f9f970 100644
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -619,6 +619,8 @@
 //  MachineConstantPool implementation
 //===----------------------------------------------------------------------===//
 
+void MachineConstantPoolValue::anchor() { }
+
 Type *MachineConstantPoolEntry::getType() const {
   if (isMachineConstantPoolEntry())
     return Val.MachineCPVal->getType();