Conditional branch instructions

• We can label lines in program (label stands for memory location)

  loop: add $t1, $s0, $s1
  

• Two conditional branch instructions:

  beq rs, rt, label
  bne rs, rt, label
  

• For beq, if value in rs equals value in rt, execution continues at label

• For bne, if value in rs does not equal value in rt, execution continues at label

• Example:

        addi $t0, $zero, 5
        add  $t1, $t0, $zero
        bne  $t0, $t1, next
        addi $t1, $t1, 1
  next: addi $t1, $t1, 1
  

  What is in $t1 at end?

  Answer: 7