AVR assembler program to compute sum of squares of first 100 integers
_main:
ldi r20, lo8(0)
ldi r21, hi8(0)
ldi r18, lo8(1)
ldi r19, hi8(1)
.L6:
mul r18, r18
movw r24,r0
mul r18, r19
add r25,r0
mul r19, r18
add r25,r0
clr r1
add r20, r24
adc r21, r25
subi r18, lo8(-(1))
sbci r19, hi8(-(1))
cpi r18, 101
cpc r19, __ZERO__
brlt .L6
push r21
push r20
ldi r24, lo8(.LC0)
ldi r25, hi8(.LC0)
push r25
push r24
call _printf
Assembly code should be viewed as a compromise: to be used only if we really need to work close to the machine.