[weak vtables] Remove a bunch of weak vtables

This patch removes most of the trivial cases of weak vtables by pinning them to
a single object file.

Differential Revision: http://llvm-reviews.chandlerc.com/D2068

Reviewed by Andy

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194865 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 2 deletions

diff --git a/include/llvm/Support/YAMLTraits.h b/include/llvm/Support/YAMLTraits.h
index d6eeaace7b..4c271e035f 100644
--- a/include/llvm/Support/YAMLTraits.h
+++ b/include/llvm/Support/YAMLTraits.h
@@ -723,6 +723,7 @@ private:
   virtual bool canElideEmptySequence();
 
   class HNode {
+    virtual void anchor();
   public:
     HNode(Node *n) : _node(n) { }
     virtual ~HNode() { }
@@ -732,9 +733,9 @@ private:
   };
 
   class EmptyHNode : public HNode {
+    virtual void anchor();
   public:
     EmptyHNode(Node *n) : HNode(n) { }
-    virtual ~EmptyHNode() {}
     static inline bool classof(const HNode *n) {
       return NullNode::classof(n->_node);
     }
@@ -742,9 +743,9 @@ private:
   };
 
   class ScalarHNode : public HNode {
+    virtual void anchor();
   public:
     ScalarHNode(Node *n, StringRef s) : HNode(n), _value(s) { }
-    virtual ~ScalarHNode() { }
 
     StringRef value() const { return _value; }
 
@@ -757,6 +758,7 @@ private:
   };
 
   class MapHNode : public HNode {
+    virtual void anchor();
   public:
     MapHNode(Node *n) : HNode(n) { }
     virtual ~MapHNode();
@@ -775,6 +777,7 @@ private:
   };
 
   class SequenceHNode : public HNode {
+    virtual void anchor();
   public:
     SequenceHNode(Node *n) : HNode(n) { }
     virtual ~SequenceHNode();