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# find the maximum value
# in a nul-terminated array
# of unsigned bytes
#
# the output is stored in $a
data $arr = { b 10, b -60, b 10, b 100, b 200, b 0 }
export
function $test() {
@start
@loop
%max =w phi @start -1, @new %byt, @old %max
%loc =l phi @start $arr, @new %loc1, @old %loc1
%byt =w loadub %loc
%loc1 =l add 1, %loc
jnz %byt, @iter, @end
@iter
%cmp =w cslew %max, %byt
jnz %cmp, @new, @old
@new
jmp @loop
@old
jmp @loop
@end
storew %max, $a
ret
}
# >>> driver
# extern void test(void);
# int a;
# int main() { test(); return !(a == 200); }
# <<<
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