Add method IGNode::getCombinedDegree to count the sum of the degrees
of two nodes, excluding duplicates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3848 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAlloc/IGNode.h b/lib/CodeGen/RegAlloc/IGNode.h
index bcf850f..edb178f 100644
--- a/lib/CodeGen/RegAlloc/IGNode.h
+++ b/lib/CodeGen/RegAlloc/IGNode.h
@@ -72,6 +72,9 @@
inline unsigned getNumOfNeighbors() const { return AdjList.size(); }
+ // Get the number of unique neighbors if these two nodes are merged
+ unsigned getCombinedDegree(const IGNode* otherNode) const;
+
inline bool isOnStack() const { return OnStack; }
// remove form IG and pushes on to stack (reduce the degree of neighbors)