Make variable name more explicit and eliminate redundant lookup in SDNodeOrdering
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177600 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SDNodeOrdering.h b/lib/CodeGen/SelectionDAG/SDNodeOrdering.h
index 74010a8..7e7b897 100644
--- a/lib/CodeGen/SelectionDAG/SDNodeOrdering.h
+++ b/lib/CodeGen/SelectionDAG/SDNodeOrdering.h
@@ -33,10 +33,10 @@
public:
SDNodeOrdering() {}
- void add(const SDNode *Node, unsigned O) {
- unsigned OldOrder = getOrder(Node);
- if (OldOrder == 0 || (OldOrder > 0 && O < OldOrder))
- OrderMap[Node] = O;
+ void add(const SDNode *Node, unsigned NewOrder) {
+ unsigned &OldOrder = OrderMap[Node];
+ if (OldOrder == 0 || (OldOrder > 0 && NewOrder < OldOrder))
+ OldOrder = NewOrder;
}
void remove(const SDNode *Node) {
DenseMap<const SDNode*, unsigned>::iterator Itr = OrderMap.find(Node);