--- old/src/hotspot/cpu/x86/macroAssembler_x86.cpp	2018-04-11 14:33:07.273214109 -0700
+++ new/src/hotspot/cpu/x86/macroAssembler_x86.cpp	2018-04-11 14:33:06.961215175 -0700
@@ -5594,7 +5594,7 @@
   } else {
     lea(end, Address(obj, var_size_in_bytes, Address::times_1));
   }
-  cmpptr(end, Address(thread, JavaThread::tlab_current_end_offset()));
+  cmpptr(end, Address(thread, JavaThread::tlab_fast_path_end_offset()));
   jcc(Assembler::above, slow_case);
 
   // update the tlab top pointer
@@ -6162,7 +6162,7 @@
     should_not_reach_here();
 
     bind(next);
-    movptr(t1, Address(thread_reg, in_bytes(JavaThread::tlab_current_end_offset())));
+    movptr(t1, Address(thread_reg, in_bytes(JavaThread::tlab_fast_path_end_offset())));
     cmpptr(t1, Address(thread_reg, in_bytes(JavaThread::tlab_top_offset())));
     jcc(Assembler::aboveEqual, ok);
     STOP("assert(top <= end)");