Although there is a single operation in this assignment statement, one of
the operands is in memory, so we must first transfer A[8] to a register. The
address of this array element is the sum of the base of the array A, found in
register $s3, plus the number to select element 8. The data should be placed
in a temporary register for use in the next instruction. Based on Figure 2.2, the
first compiled instruction is