int main() {
                    // movq   %rsp,%rbp
                    // subq   $0x40,%rsp

//        0          -c        -18     -20     -28     -30 -34
// [retadr]........[ x]...[   y  ][   a  ][   b  ][   z  ][ w]............[stack

    int x = 3;      // movl   $3,-0xc(%rbp)         x is at -c

    long y = 4;     // movq   $4,-0x18(%rbp)        y is at -18

    int *a = &x;    // leaq   -0xc(%rbp),%rax
                    // movq   %rax,-0x20(%rbp)      a is at -20

    long *b = &y;   // leaq   -0x18(%rbp),%rax
                    // movq   %rax,-0x28(%rbp)      b is at -28

                    // movq   -0x20(%rbp),%rax      a was at -20
    long z = *a;    // movslq (%rax),%rax
                    // movq   %rax,-0x30(%rbp)      z is at -30

                    // movq   -0x28(%rbp),%rax
    int w = *b;     // movl   (%rax),%ecx
                    // movl   %ecx,-0x34(%rbp)      w is at -34

                    // addq   $0x40,%rsp
                    // popq   %rbp
    return 0;       // xorl   %eax, %eax
                    // retq
}