add more simplification rules for min/max clamp with exprs
add more simplification rules for min/max clamp with exprs

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