fixed bugs in get_bounds solve.cp
fixed bugs in get_bounds solve.cp

the ~expr_uses_vars check inside get_bounds doesn't handle vector lanes
correctly

jiawen/Halide,jiawen/Halide,jiawen/Halide,psuriana/Halide,kgnk/Halide,kgnk/Halide,tdenniston/Halide,kgnk/Halide,tdenniston/Halide,tdenniston/Halide,jiawen/Halide,kgnk/Halide,kgnk/Halide,kgnk/Halide,ronen/Halide,tdenniston/Halide,kgnk/Halide,psuriana/Halide,jiawen/Halide,psuriana/Halide,ronen/Halide,ronen/Halide,tdenniston/Halide,psuriana/Halide,jiawen/Halide,ronen/Halide,psuriana/Halide,tdenniston/Halide,tdenniston/Halide,ronen/Halide,psuriana/Halide,ronen/Halide,ronen/Halide,kgnk/Halide,jiawen/Halide,psuriana/Halide,tdenniston/Halide,ronen/Halide