--- old/src/hotspot/share/opto/escape.cpp	2018-02-22 16:36:23.620521693 +0100
+++ new/src/hotspot/share/opto/escape.cpp	2018-02-22 16:36:23.336523533 +0100
@@ -37,6 +37,7 @@
 #include "opto/phaseX.hpp"
 #include "opto/movenode.hpp"
 #include "opto/rootnode.hpp"
+#include "opto/subnode.hpp"
 
 ConnectionGraph::ConnectionGraph(Compile * C, PhaseIterGVN *igvn) :
   _nodes(C->comp_arena(), C->unique(), C->unique(), NULL),
@@ -160,7 +161,8 @@
       // scalar replaceable objects in split_unique_types().
       _mergemem_worklist.append(n->as_MergeMem());
     } else if (OptimizePtrCompare && n->is_Cmp() &&
-               (n->Opcode() == Op_CmpP || n->Opcode() == Op_CmpN)) {
+               ((n->Opcode() == Op_CmpP && !(((CmpPNode*)n)->has_perturbed_operand() != NULL)) ||
+                 n->Opcode() == Op_CmpN)) {
       // Collect compare pointers nodes.
       ptr_cmp_worklist.append(n);
     } else if (n->is_MemBarStoreStore()) {