--- old/src/hotspot/share/opto/vectornode.cpp	2018-03-09 13:15:46.378719573 -0800
+++ new/src/hotspot/share/opto/vectornode.cpp	2018-03-09 13:15:46.082718466 -0800
@@ -122,6 +122,9 @@
   case Op_SqrtD:
     assert(bt == T_DOUBLE, "must be");
     return Op_SqrtVD;
+  case Op_PopCountI:
+    assert(bt == T_INT, "must be");
+    return Op_PopCountVI;
   case Op_LShiftI:
     switch (bt) {
     case T_BOOLEAN:
@@ -325,6 +328,8 @@
   case Op_SqrtVF: return new SqrtVFNode(n1, vt);
   case Op_SqrtVD: return new SqrtVDNode(n1, vt);
 
+  case Op_PopCountVI: return new PopCountVINode(n1, vt);
+
   case Op_LShiftVB: return new LShiftVBNode(n1, n2, vt);
   case Op_LShiftVS: return new LShiftVSNode(n1, n2, vt);
   case Op_LShiftVI: return new LShiftVINode(n1, n2, vt);