*** old/src/share/vm/opto/superword.cpp	Fri Jul 25 15:31:09 2014
--- new/src/share/vm/opto/superword.cpp	Fri Jul 25 15:31:09 2014

*** 1376,1385 ****
--- 1376,1399 ----
        Node* first   = executed_first(p);
        int   opc = n->Opcode();
        if (n->is_Load()) {
          Node* ctl = n->in(MemNode::Control);
          Node* mem = first->in(MemNode::Memory);
+         SWPointer p1(n->as_Mem(), this);
+         // Identify the memory dependency for the new loadVector node by 
+         // walking up through memory chain.
+         // This is done to give flexibility to the new loadVector node so that 
+         // it can move above independent storeVector nodes.
+         while (mem->is_StoreVector()) {
+           SWPointer p2(mem->as_Mem(), this);
+           int cmp = p1.cmp(p2);
+           if (SWPointer::not_equal(cmp) || !SWPointer::comparable(cmp)) {
+             mem = mem->in(MemNode::Memory);
+           } else {
+             break; // dependent memory
+           }
+         }
          Node* adr = low_adr->in(MemNode::Address);
          const TypePtr* atyp = n->adr_type();
          vn = LoadVectorNode::make(C, opc, ctl, mem, adr, atyp, vlen, velt_basic_type(n));
          vlen_in_bytes = vn->as_LoadVector()->memory_size();
        } else if (n->is_Store()) {