Problem 1. You have the following array: int vals[4]; The address of this array is stored in the register $84. Write a piece of MIPS code that computes the sum of all elements and places it in the register $87. Problem 2. Convert to MIPS instructions the following expression a = b * 17; The address of a is stored in $so, the address of b is stored in $s1. - the only arithmetic operations you can use are additions (no multiplications) - your answer should have not more than 12 instructions. - ignore the possibility of overflow Hint: you can arrange fast b*17 computation using the fact that 17 = 16+ 1. And 16 = 2^4. We will talk a bit more about that the next class