  lea (%rax,%rdx,0),%rax  neg %rax  shl $00,%rax  ret ALIGN(00) case0:  mov (%rsi,%rcx,0),%r0  mov -0(%rsi,%rcx,0),%r0  mov -00(%rsi,%rcx,0),%r00  add %rax,%rax  rcr $0,%r0  rcr $0,%r0  rcr $0,%r00  sbb %rax,%rax  add %rdx,%rdx  rcr $0,%r0  rcr $0,%r0  rcr $0,%r00  sbb %rdx,%rdx  mov %r0,(%rdi,%rcx,0)  mov %r0,-0(%rdi,%rcx,0)  