--- old/src/hotspot/cpu/aarch64/c1_Runtime1_aarch64.cpp	2018-06-19 15:43:41.399114926 -0400
+++ new/src/hotspot/cpu/aarch64/c1_Runtime1_aarch64.cpp	2018-06-19 15:43:41.079139642 -0400
@@ -721,7 +721,7 @@
           // get the instance size (size is postive so movl is fine for 64bit)
           __ ldrw(obj_size, Address(klass, Klass::layout_helper_offset()));
 
-          __ eden_allocate(rthread, obj, obj_size, 0, t1, slow_path);
+          __ eden_allocate(obj, obj_size, 0, t1, slow_path);
 
           __ initialize_object(obj, klass, obj_size, 0, t1, t2, /* is_tlab_allocated */ false);
           __ verify_oop(obj);
@@ -821,7 +821,7 @@
           __ add(arr_size, arr_size, MinObjAlignmentInBytesMask); // align up
           __ andr(arr_size, arr_size, ~MinObjAlignmentInBytesMask);
 
-          __ eden_allocate(rthread, obj, arr_size, 0, t1, slow_path);  // preserves arr_size
+          __ eden_allocate(obj, arr_size, 0, t1, slow_path);  // preserves arr_size
 
           __ initialize_header(obj, klass, length, t1, t2);
           __ ldrb(t1, Address(klass, in_bytes(Klass::layout_helper_offset()) + (Klass::_lh_header_size_shift / BitsPerByte)));