Fix http://llvm.org/PR5160, to let CallbackVHs modify other ValueHandles on the

same Value without breaking things.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83861 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 2 deletions

diff --git a/include/llvm/Support/ValueHandle.h b/include/llvm/Support/ValueHandle.h
index a8f2bdb..e6363ff 100644
--- a/include/llvm/Support/ValueHandle.h
+++ b/include/llvm/Support/ValueHandle.h
@@ -111,10 +111,15 @@ private:
   HandleBaseKind getKind() const { return PrevPair.getInt(); }
   void setPrevPtr(ValueHandleBase **Ptr) { PrevPair.setPointer(Ptr); }
 
-  /// AddToExistingUseList - Add this ValueHandle to the use list for VP,
-  /// where List is known to point into the existing use list.
+  /// AddToExistingUseList - Add this ValueHandle to the use list for VP, where
+  /// List is the address of either the head of the list or a Next node within
+  /// the existing use list.
   void AddToExistingUseList(ValueHandleBase **List);
 
+  /// AddToExistingUseListAfter - Add this ValueHandle to the use list after
+  /// Node.
+  void AddToExistingUseListAfter(ValueHandleBase *Node);
+
   /// AddToUseList - Add this ValueHandle to the use list for VP.
   void AddToUseList();
   /// RemoveFromUseList - Remove this ValueHandle from its current use list.