aretha$ cat tmp.s
        movl $d0, $d1
        movl $d0, $d1
aretha$ ./as-new tmp.s
aretha$ ../binutils/objdump -d a.out
 
a.out:     file format elf32-m68k
 
Disassembly of section .text:
 
00000000 <.text>:
   0:   23f9
        ...
   a:   23f9
        ...