=> 0x7fe863bccb81 <g_type_check_instance_cast+49>:	mov    (%rdi),%rsi
   0x7fe863bccb84 <g_type_check_instance_cast+52>:	test   %rsi,%rsi
   0x7fe863bccb87 <g_type_check_instance_cast+55>:	je     0x7fe863bccd00 <g_type_check_instance_cast+432>
   0x7fe863bccb8d <g_type_check_instance_cast+61>:	mov    (%rsi),%r13
   0x7fe863bccb90 <g_type_check_instance_cast+64>:	mov    %r13,%rcx
   0x7fe863bccb93 <g_type_check_instance_cast+67>:	and    $0xfffffffffffffffc,%rcx
   0x7fe863bccb97 <g_type_check_instance_cast+71>:	cmp    $0x3fc,%r13
   0x7fe863bccb9e <g_type_check_instance_cast+78>:	jbe    0x7fe863bccce0 <g_type_check_instance_cast+400>
   0x7fe863bccba4 <g_type_check_instance_cast+84>:	xor    %edx,%edx
   0x7fe863bccba6 <g_type_check_instance_cast+86>:	xor    %ebp,%ebp
   0x7fe863bccba8 <g_type_check_instance_cast+88>:	test   %rcx,%rcx
   0x7fe863bccbab <g_type_check_instance_cast+91>:	je     0x7fe863bccbc2 <g_type_check_instance_cast+114>
   0x7fe863bccbad <g_type_check_instance_cast+93>:	movzbl 0x16(%rcx),%eax
   0x7fe863bccbb1 <g_type_check_instance_cast+97>:	and    $0x4,%eax
   0x7fe863bccbb4 <g_type_check_instance_cast+100>:	cmp    $0x1,%al
   0x7fe863bccbb6 <g_type_check_instance_cast+102>:	sbb    %edx,%edx