Problem D. Given the following snippets from lab6.s file, trace back the original arithmetic expression: Note: You should use variable name "y" for -12(%rbp) and "x" for -41%rbp). (10 points) 1. movl -12(%rbp), %edx movl %edx, %eax sall $2,%eax addl %edx, %eax movl %eax, -12(%rbp) 2. movi -4(%rbp), %eax leal -8(%rax), %edx movl %edx, %eax sall $3,%eax subl%edx, %eax movl %eax, -4(%rbp)