Reverting dtor devirtualization patch.

_sabre_: it has a major problem: by the time ~Value is run, all of the "parts" of the derived classes have been destroyed
_sabre_: the vtable lives to fight another day

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44760 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 3 deletions

diff --git a/include/llvm/Instruction.h b/include/llvm/Instruction.h
index 3875cbe3b1..8da89e2f38 100644
--- a/include/llvm/Instruction.h
+++ b/include/llvm/Instruction.h
@@ -42,10 +42,10 @@ protected:
               Instruction *InsertBefore = 0);
   Instruction(const Type *Ty, unsigned iType, Use *Ops, unsigned NumOps,
               BasicBlock *InsertAtEnd);
-
-  static void destroyThis(Instruction*v);
-  friend class Value;
 public:
+  // Out of line virtual method, so the vtable, etc has a home.
+  ~Instruction();
+  
   /// mayWriteToMemory - Return true if this instruction may modify memory.
   ///
   bool mayWriteToMemory() const;