Instruction: Multiply
mult rA, rB
mult $3, $4
mult $0, rA, rB
mult rA, IMM32
mult $3, 0x12345678
li $at, IMM32 mult rA, $at
mult rC, rA, IMM32
mult $2, $3, 0x12345678
LI $AT, IMM32 mult rC, rA, $at