pragma solidity ^0.4.24;

contract AssemblyLoops {

    function nativeLoops() public returns (uint _r) {
        for(uint i=0; i<10; i++){
            _r++;
        }
    }

    function asmLoops() public returns (uint _r) {
        assembly {
            let i := 0
            loop:
            i := add(i, 1)
            _r := add(_r, 1)
            jumpi(loop, lt(i, 10))
        }
    }


    function inlineAsmLoops() public returns (uint _r) {
        assembly {
            0
            10

            loop:
            //i:=add(i,1)
            dup2
            1
            add
            swap2
            pop

            //_r:=ad(_r,1)
            dup3
            1
            add
            swap3
            pop

            //lt(i,10)
            dup1
            dup3
            lt

            //jumpi(loop, lt(i,10))
            loop
            jumpi

            pop
            pop

        }
    }
}