=> 0x7fbb55222729 <g_type_check_instance_cast+489>:	mov    (%rdi),%edx
   0x7fbb5522272b <g_type_check_instance_cast+491>:	je     0x7fbb55222778 <g_type_check_instance_cast+568>
   0x7fbb5522272d <g_type_check_instance_cast+493>:	cmp    -0x8(%rcx),%rdx
   0x7fbb55222731 <g_type_check_instance_cast+497>:	jae    0x7fbb55222778 <g_type_check_instance_cast+568>
   0x7fbb55222733 <g_type_check_instance_cast+499>:	movzbl (%rcx,%rdx,1),%r8d
   0x7fbb55222738 <g_type_check_instance_cast+504>:	test   %r8d,%r8d
   0x7fbb5522273b <g_type_check_instance_cast+507>:	je     0x7fbb55222778 <g_type_check_instance_cast+568>
   0x7fbb5522273d <g_type_check_instance_cast+509>:	mov    -0x8(%rdi),%rax
   0x7fbb55222741 <g_type_check_instance_cast+513>:	sub    $0x1,%r8d
   0x7fbb55222745 <g_type_check_instance_cast+517>:	movslq %r8d,%r8
   0x7fbb55222748 <g_type_check_instance_cast+520>:	lea    -0x8(%rax),%rdx
   0x7fbb5522274c <g_type_check_instance_cast+524>:	mov    %rdx,%rax
   0x7fbb5522274f <g_type_check_instance_cast+527>:	mul    %rbp
   0x7fbb55222752 <g_type_check_instance_cast+530>:	shr    $0x4,%rdx
   0x7fbb55222756 <g_type_check_instance_cast+534>:	cmp    %rdx,%r8
   0x7fbb55222759 <g_type_check_instance_cast+537>:	jae    0x7fbb55222778 <g_type_check_instance_cast+568>