8305995: Footprint regression from JDK-8224957

Reviewed-by: kvn, thartmann

Author: catap

src/hotspot/share/opto/node.cpp

@@ -1310,7 +1310,7 @@ bool Node::dominates(Node* sub, Node_List &nlist) {
     } else if (sub == up && sub->is_Region() && sub->req() == 2) {
       // Take in(1) path on the way up to 'dom' for regions with only one input
       up = sub->in(1);
-    } else if (sub == up && sub->is_Region() && sub->req() == 3) {
+    } else if (sub == up && sub->is_Region()) {
       // Try both paths for Regions with 2 input paths (it may be a loop head).
       // It could give conservative 'false' answer without information
       // which region's input is the entry path.