Revert r194865 and r194874.
This change is incorrect. If you delete virtual destructor of both a base class
and a subclass, then the following code:
Base *foo = new Child();
delete foo;
will not cause the destructor for members of Child class. As a result, I observe
plently of memory leaks. Notable examples I investigated are:
ObjectBuffer and ObjectBufferStream, AttributeImpl and StringSAttributeImpl.
llvm-svn: 194997
diff --git a/llvm/lib/IR/Value.cpp b/llvm/lib/IR/Value.cpp
index a56272f..35808a6 100644
--- a/llvm/lib/IR/Value.cpp
+++ b/llvm/lib/IR/Value.cpp
@@ -735,5 +735,9 @@
#endif
}
-// pin vtable to this file
-void CallbackVH::anchor() {}
+// Default implementation for CallbackVH.
+void CallbackVH::allUsesReplacedWith(Value *) {}
+
+void CallbackVH::deleted() {
+ setValPtr(NULL);
+}