beqz
Branch if equal to zero
Branches to label if $t1 is zero.
Used in
- Arrays and stringsMIPS assembly
- Maximum and unsigned distanceMIPS assembly
- Byte length of a stringMIPS assembly
- A subroutine with its arguments in registersMIPS assembly
- Bubble sortMIPS assembly
- A bouncing ballMIPS assembly
- Move a square with the keyboardMIPS assembly
- The snake gameMIPS assembly
- Flappy birdMIPS assembly
- ChiptuneMIPS assembly
Forms
Operands
$t1- Any general-purpose register,
$0to$31, using its numeric or named spelling, such as$8or$t0($zerois$0;$rais$31). label- A named address in the program, such as the start of a loop or a variable in
.data.
# Run beqz with one true and one false condition. A taken branch skips the assignment of 1; inspect $t2=2 for taken and $t3=1 for fall-through.
li $t0, 0
li $t2, 0
beqz $t0, taken_one
li $t2, 1
b first_done # Skip the other marker unconditionally.
taken_one: li $t2, 2
first_done:
li $t0, 2
li $t3, 0
beqz $t0, taken_two
li $t3, 1
b second_done # Skip the other marker unconditionally.
taken_two: li $t3, 2
second_done: