Extract SpillPlacement::addLinks for handling the special transparent blocks.

llvm-svn: 129079

1 files changed, 4 insertions, 3 deletions

diff --git a/llvm/lib/CodeGen/SpillPlacement.h b/llvm/lib/CodeGen/SpillPlacement.h
index a67785ddf9b..46e64e6fcbf 100644
--- a/llvm/lib/CodeGen/SpillPlacement.h
+++ b/llvm/lib/CodeGen/SpillPlacement.h
@@ -89,11 +89,12 @@ public:
   /// addConstraints - Add constraints and biases. This method may be called
   /// more than once to accumulate constraints.
   /// @param LiveBlocks Constraints for blocks that have the variable live in or
-  ///                   live out. DontCare/DontCare means the variable is live
-  ///                   through the block. DontCare/X means the variable is live
-  ///                   out, but not live in.
+  ///                   live out.
   void addConstraints(ArrayRef<BlockConstraint> LiveBlocks);
 
+  /// addLinks - Add transparent blocks with the given numbers.
+  void addLinks(ArrayRef<unsigned> Links);
+
   /// getPositiveNodes - Return the total number of graph nodes with a positive
   /// bias after adding constraints.
   unsigned getPositiveNodes() const { return PositiveNodes; }