+[a-f0-9]+: 31 c0 xor %eax,%eax
+[a-f0-9]+: 85 c0 test %eax,%eax
+[a-f0-9]+: 0f 1f 44 00 00 nopl 0x0\(%rax,%rax,1\)
- +[a-f0-9]+: 66 0f 1f 44 00 00 nopw 0x0\(%rax,%rax,1\)
+ +[a-f0-9]+: 0f 1f 44 00 00 nopl 0x0\(%rax,%rax,1\)
+ +[a-f0-9]+: 90 nop
+[a-f0-9]+: 31 c0 xor %eax,%eax
+[a-f0-9]+: 31 c0 xor %eax,%eax