--- old/src/hotspot/share/classfile/fieldLayoutBuilder.cpp	2020-04-05 21:34:58.986235348 -0700
+++ new/src/hotspot/share/classfile/fieldLayoutBuilder.cpp	2020-04-05 21:34:58.634222098 -0700
@@ -751,6 +751,7 @@
   _info->_nonstatic_field_size = (nonstatic_field_end - instanceOopDesc::base_offset_in_bytes()) / heapOopSize;
   _info->_has_nonstatic_fields = _has_nonstatic_fields;
 
+#ifndef PRODUCT
   if (PrintFieldLayout) {
     ResourceMark rm;
     tty->print_cr("Layout of class %s", _classname->as_C_string());
@@ -761,6 +762,7 @@
     tty->print_cr("Instance size = %d bytes", _info->_instance_size * wordSize);
     tty->print_cr("---");
   }
+#endif
 }
 
 void FieldLayoutBuilder::build_layout() {