=> 0x7f9faf419bdb <memcpy+347>:	rep movsq %ds:(%rsi),%es:(%rdi)
   0x7f9faf419bde <memcpy+350>:	xchg   %ax,%ax
   0x7f9faf419be0 <memcpy+352>:	sub    %r11,%rdx
   0x7f9faf419be3 <memcpy+355>:	test   $0xfffffffffffffff8,%rdx
   0x7f9faf419bea <memcpy+362>:	jne    0x7f9faf419c00 <memcpy+384>
   0x7f9faf419bec <memcpy+364>:	and    $0x7,%edx
   0x7f9faf419bef <memcpy+367>:	mov    -0x8(%rsp),%rax
   0x7f9faf419bf4 <memcpy+372>:	jne    0x7f9faf419a89 <memcpy+9>
   0x7f9faf419bfa <memcpy+378>:	repz retq 
   0x7f9faf419bfc <memcpy+380>:	nopl   0x0(%rax)
   0x7f9faf419c00 <memcpy+384>:	
    mov    0x2f44f9(%rip),%r8        # 0x7f9faf70e100
   0x7f9faf419c07 <memcpy+391>:	cmp    %rdx,%r8
   0x7f9faf419c0a <memcpy+394>:	cmova  %rdx,%r8
   0x7f9faf419c0e <memcpy+398>:	mov    %r8,%rcx
   0x7f9faf419c11 <memcpy+401>:	and    $0xffffffffffffffc0,%r8
   0x7f9faf419c15 <memcpy+405>:	shr    $0x6,%rcx