diff a/src/hotspot/share/opto/memnode.cpp b/src/hotspot/share/opto/memnode.cpp
--- a/src/hotspot/share/opto/memnode.cpp
+++ b/src/hotspot/share/opto/memnode.cpp
@@ -186,11 +186,14 @@
         result = proj_in->in(TypeFunc::Memory);
       } else {
         assert(false, "unexpected projection");
       }
     } else if (result->is_ClearArray()) {
-      if (!is_instance || !ClearArrayNode::step_through(&result, instance_id, phase)) {
+      intptr_t offset;
+      AllocateNode* alloc = AllocateNode::Ideal_allocation(result->in(3), phase, offset);
+
+      if (!is_instance || (alloc == NULL) || !ClearArrayNode::step_through(&result, instance_id, phase)) {
         // Can not bypass initialization of the instance
         // we are looking for.
         break;
       }
       // Otherwise skip it (the call updated 'result' value).
@@ -706,11 +709,14 @@
           break;
         }
         mem = mem->in(0)->in(TypeFunc::Memory);
         continue;           // (a) advance through independent MemBar memory
       } else if (mem->is_ClearArray()) {
-        if (ClearArrayNode::step_through(&mem, (uint)addr_t->instance_id(), phase)) {
+        intptr_t offset;
+        AllocateNode* alloc = AllocateNode::Ideal_allocation(mem->in(3), phase, offset);
+
+        if ((alloc != NULL) && ClearArrayNode::step_through(&mem, (uint)addr_t->instance_id(), phase)) {
           // (the call updated 'mem' value)
           continue;         // (a) advance through independent allocation memory
         } else {
           // Can not bypass initialization of the instance
           // we are looking for.