blez
Branch if less than or equal to zero
Branches to label if t1 is less than or equal to zero.
Used in
- Drawing shapes on the screenRISC-V assembly
- A bouncing ballRISC-V assembly
- Move a square with the keyboardRISC-V assembly
- Flappy birdRISC-V assembly
Forms
Operands
t1- Any integer register,
x0tox31, or its named alias, such aszero,t0ort6. label- A named address in the program, such as the start of a loop or a variable in
.data.
# First blez case is taken; second is not. t2 ends at 11 (10 + 1).
.text
li t2, 0
li t0, -1
blez t0, taken
addi t2, t2, 1
j first_done # Skip the other marker unconditionally.
taken:
addi t2, t2, 10
first_done:
li t0, 1
blez t0, missed
addi t2, t2, 1
j second_done # Skip the other marker unconditionally.
missed:
addi t2, t2, 10
second_done:
# t2=11 proves one taken and one untaken path.