dm6446 DSP端4个for循环嵌套如何优化

下面一段程序是4个for循环嵌套，在DSP端运行后卡住了，不知如何优化？求指导，谢谢！
for( i = 0; i < cascade->count; i++ )
    [
        CvHaarStageClassifier* stage_classifier = cascade->stage_classifier + i;
        if( !stage_classifier->classifier ||
            stage_classifier->count <= 0 )
        [
            sprintf( errorstr, "header of the stage classifier #%d is invalid "
                     "(has null pointers or non-positive classfier count)", i );
            CV_ERROR( CV_StsError, errorstr );
        ]
        max_count = MAX( max_count, stage_classifier->count );
        total_classifiers += stage_classifier->count;
        for( j = 0; j < stage_classifier->count; j++ )
        [
            CvHaarClassifier* classifier = stage_classifier->classifier + j;
            total_nodes += classifier->count;
            for( l = 0; l < classifier->count; l++ )
            [
                for( k = 0; k < CV_HAAR_FEATURE_MAX; k++ )
                [
                    if( classifier->haar_feature[l].rect[k].r.width )
                    [
                        CvRect r = classifier->haar_feature[l].rect[k].r;
                        int tilted = classifier->haar_feature[l].tilted;
                        has_tilted_features |= tilted != 0;
                        if( r.width < 0 || r.height < 0 || r.y < 0 ||
                            r.x + r.width > orig_window_size.width
                            ||
                            (!tilted &&
                            (r.x < 0 || r.y + r.height > orig_window_size.height))
                            ||
                            (tilted && (r.x - r.height < 0 ||
                            r.y + r.width + r.height > orig_window_size.height)))
                        [
                            sprintf( errorstr, "rectangle #%d of the classifier #%d of "
                                     "the stage classifier #%d is not inside "
                                     "the reference (original) cascade window", k, j, i );
                            CV_ERROR( CV_StsNullPtr, errorstr );
                        ]
                    ]
                ]
            ]
        ]
]