--- old/src/hotspot/cpu/arm/arm.ad	2018-09-20 10:17:59.376936817 +0300
+++ new/src/hotspot/cpu/arm/arm.ad	2018-09-20 10:17:59.172924837 +0300
@@ -5316,7 +5316,7 @@
 // Prefetch instructions.
 // Must be safe to execute with invalid address (cannot fault).
 
-instruct prefetchAlloc_mp( memoryP mem ) %{
+instruct prefetchAlloc( memoryP mem ) %{
   predicate(os::is_MP());
   match( PrefetchAllocation mem );
   ins_cost(MEMORY_REF_COST);
@@ -5331,23 +5331,6 @@
 #endif
   %}
   ins_pipe(iload_mem);
-%}
-
-instruct prefetchAlloc_sp( memoryP mem ) %{
-  predicate(!os::is_MP());
-  match( PrefetchAllocation mem );
-  ins_cost(MEMORY_REF_COST);
-  size(4);
-
-  format %{ "PLD $mem\t! Prefetch allocation" %}
-  ins_encode %{
-#ifdef AARCH64
-    __ prfm(pstl1keep, $mem$$Address);
-#else
-    __ pld($mem$$Address);
-#endif
-  %}
-  ins_pipe(iload_mem);
 %}
 
 //----------Store Instructions-------------------------------------------------