=> 0x7f921698c320:	cmp    %rdi,0x18(%rdx)
   0x7f921698c324:	je     0x7f921698c338
   0x7f921698c326:	mov    %rdx,%rdi
   0x7f921698c329:	mov    0x8(%rdi),%rdx
   0x7f921698c32d:	test   %rdx,%rdx
   0x7f921698c330:	jne    0x7f921698c320
   0x7f921698c332:	repz retq 
   0x7f921698c334:	nopl   0x0(%rax)
   0x7f921698c338:	mov    0x10(%rdx),%rcx
   0x7f921698c33c:	test   %rcx,%rcx
   0x7f921698c33f:	je     0x7f921698c350
   0x7f921698c341:	mov    (%rcx),%ecx
   0x7f921698c343:	add    $0x1,%ecx
   0x7f921698c346:	add    %ecx,%eax
   0x7f921698c348:	jmp    0x7f921698c326
   0x7f921698c34a:	nopw   0x0(%rax,%rax,1)