added runtime in ms to -p option

ml.cpp

@@ -1922,6 +1922,9 @@ int main(int argc, char *argv[]) {
 
 	srand(time(NULL));
 	try {
+		// performance monitor on
+		if (cmdOptionExists(argv, argv + argc, "-p")) 
+            MlPerfMon::instance().turnOn();
 		// skip loading std lib
 		if (!cmdOptionExists(argv, argv + argc, "-b")) {
 			load_std_lib(env);
@@ -1936,9 +1939,6 @@ int main(int argc, char *argv[]) {
 			std::cout << VERSION << std::endl;
 			return 0;
 		}
-		// performance monitor on
-		if (cmdOptionExists(argv, argv + argc, "-p"))
-            MlPerfMon::instance().turnOn();
 		// passed code
 		if (cmdOptionExists(argv, argv + argc, "-c")) {
 			std::vector<std::string> codes = getCmdOption(argv, argc, "-c");