=> 0x7fb7f6ca4f8f <g_type_check_instance_is_a+63>:	testb  $0x4,0x16(%rax)
   0x7fb7f6ca4f93 <g_type_check_instance_is_a+67>:	je     0x7fb7f6ca4fc0 <g_type_check_instance_is_a+112>
   0x7fb7f6ca4f95 <g_type_check_instance_is_a+69>:	movzbl 0x14(%rsi),%edx
   0x7fb7f6ca4f99 <g_type_check_instance_is_a+73>:	movzbl 0x14(%rax),%ecx
   0x7fb7f6ca4f9d <g_type_check_instance_is_a+77>:	cmp    %cl,%dl
   0x7fb7f6ca4f9f <g_type_check_instance_is_a+79>:	ja     0x7fb7f6ca4fb8 <g_type_check_instance_is_a+104>
   0x7fb7f6ca4fa1 <g_type_check_instance_is_a+81>:	sub    %edx,%ecx
   0x7fb7f6ca4fa3 <g_type_check_instance_is_a+83>:	mov    0x48(%rsi),%rbx
   0x7fb7f6ca4fa7 <g_type_check_instance_is_a+87>:	movslq %ecx,%rcx
   0x7fb7f6ca4faa <g_type_check_instance_is_a+90>:	cmp    %rbx,0x48(%rax,%rcx,8)
   0x7fb7f6ca4faf <g_type_check_instance_is_a+95>:	je     0x7fb7f6ca5098 <g_type_check_instance_is_a+328>
   0x7fb7f6ca4fb5 <g_type_check_instance_is_a+101>:	movslq %edx,%rdx
   0x7fb7f6ca4fb8 <g_type_check_instance_is_a+104>:	cmpq   $0x8,0x48(%rsi,%rdx,8)
   0x7fb7f6ca4fbe <g_type_check_instance_is_a+110>:	je     0x7fb7f6ca4ff0 <g_type_check_instance_is_a+160>
   0x7fb7f6ca4fc0 <g_type_check_instance_is_a+112>:	xor    %eax,%eax
   0x7fb7f6ca4fc2 <g_type_check_instance_is_a+114>:	pop    %rbx