[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. The memory leaks in this version have been fixed. Thanks
Alexey for pointing them out.

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

Reviewed by Andy

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195064 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 4 insertions, 0 deletions

diff --git a/include/llvm/ExecutionEngine/ObjectBuffer.h b/include/llvm/ExecutionEngine/ObjectBuffer.h
index 32de404..af2a926 100644
--- a/include/llvm/ExecutionEngine/ObjectBuffer.h
+++ b/include/llvm/ExecutionEngine/ObjectBuffer.h
@@ -30,6 +30,7 @@ namespace llvm {
 /// ObjectFile) as needed, but the MemoryBuffer instance returned does not own the
 /// actual memory it points to.
 class ObjectBuffer {
+  virtual void anchor();
 public:
   ObjectBuffer() {}
   ObjectBuffer(MemoryBuffer* Buf) : Buffer(Buf) {}
@@ -56,6 +57,7 @@ protected:
 /// while providing a common ObjectBuffer interface for access to the
 /// memory once the object has been generated.
 class ObjectBufferStream : public ObjectBuffer {
+  virtual void anchor();
 public:
   ObjectBufferStream() : OS(SV) {}
   virtual ~ObjectBufferStream() {}
diff --git a/include/llvm/ExecutionEngine/ObjectCache.h b/include/llvm/ExecutionEngine/ObjectCache.h
index 6f55e43..d1849df 100644
--- a/include/llvm/ExecutionEngine/ObjectCache.h
+++ b/include/llvm/ExecutionEngine/ObjectCache.h
@@ -20,6 +20,7 @@ class Module;
 /// ExecutionEngine for the purpose of avoiding compilation for Modules that
 /// have already been compiled and an object file is available.
 class ObjectCache {
+  virtual void anchor();
 public:
   ObjectCache() { }
 
diff --git a/include/llvm/ExecutionEngine/ObjectImage.h b/include/llvm/ExecutionEngine/ObjectImage.h
index 9fddca7..076f4b1 100644
--- a/include/llvm/ExecutionEngine/ObjectImage.h
+++ b/include/llvm/ExecutionEngine/ObjectImage.h
@@ -25,6 +25,7 @@ namespace llvm {
 class ObjectImage {
   ObjectImage() LLVM_DELETED_FUNCTION;
   ObjectImage(const ObjectImage &other) LLVM_DELETED_FUNCTION;
+  virtual void anchor();
 
 protected:
   OwningPtr<ObjectBuffer> Buffer;