diff -r 525f24ac5db0 -r c89e1f0a084e hotspot/src/cpu/aarch64/vm/c1_Runtime1_aarch64.cpp
--- a/hotspot/src/cpu/aarch64/vm/c1_Runtime1_aarch64.cpp	Mon Dec 19 08:31:01 2016 +0100
+++ b/hotspot/src/cpu/aarch64/vm/c1_Runtime1_aarch64.cpp	Mon Dec 19 02:33:30 2016 -0800
@@ -728,7 +728,7 @@
 
           __ tlab_allocate(obj, obj_size, 0, t1, t2, slow_path);
 
-          __ initialize_object(obj, klass, obj_size, 0, t1, t2);
+          __ initialize_object(obj, klass, obj_size, 0, t1, t2, /* is_tlab_allocated */ true);
           __ verify_oop(obj);
           __ ldp(r5, r19, Address(__ post(sp, 2 * wordSize)));
           __ ret(lr);
@@ -740,7 +740,7 @@
           __ eden_allocate(obj, obj_size, 0, t1, slow_path);
           __ incr_allocated_bytes(rthread, obj_size, 0, rscratch1);
 
-          __ initialize_object(obj, klass, obj_size, 0, t1, t2);
+          __ initialize_object(obj, klass, obj_size, 0, t1, t2, /* is_tlab_allocated */ false);
           __ verify_oop(obj);
           __ ldp(r5, r19, Address(__ post(sp, 2 * wordSize)));
           __ ret(lr);
@@ -853,7 +853,9 @@
           __ andr(t1, t1, Klass::_lh_header_size_mask);
           __ sub(arr_size, arr_size, t1);  // body length
           __ add(t1, t1, obj);       // body start
-          __ initialize_body(t1, arr_size, 0, t2);
+          if (!ZeroTLAB) {
+           __ initialize_body(t1, arr_size, 0, t2);
+          }
           __ verify_oop(obj);
 
           __ ret(lr);