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# find the maximum value
# in a nul-terminated array
# of unsigned bytes
#
# b input array
# a output max
@start
@loop
%max =w phi @start -1, @new %byt, @old %max
%id0 =l phi @start 0, @new %id1, @old %id1
%loc =l add $b, %id0
%byt =w loadub %loc
%id1 =l add 1, %id0
jnz %byt, @iter, @end
@iter
%cmp =w csle %max, %byt
jnz %cmp, @new, @old
@new
jmp @loop
@old
jmp @loop
@end
store %max, $a
ret
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