Add --noopt flag that sets all kind of flags to make unoptimzied code as fast as possible (and not …

runtime/bin/main.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
 #include "include/dart_api.h"
 #include "include/dart_debugger_api.h"
@@ skipping 736 matching lines @@
 "\n"
 "--snapshot=<file_name>\n"
 "  loads Dart script and generates a snapshot in the specified file\n"
 "\n"
 "--print-script\n"
 "  generates Dart source code back and prints it after parsing a Dart script\n"
 "\n"
 "--enable-vm-service[:<port number>]\n"
 "  enables the VM service and listens on specified port for connections\n"
 "  (default port number is 8181)\n"
+"--noopt\n"
+"  run unoptimized code only\n"
 "\n"
 "The following options are only used for VM development and may\n"
 "be changed in any future version:\n");
     const char* print_flags = "--print_flags";
     Dart_SetVMFlags(1, &print_flags);
   }
 }
 
 
 static Dart_Handle SetBreakpoint(const char* breakpoint_at,
@@ skipping 354 matching lines @@
   exit(Process::GlobalExitCode());
 }
 
 }  // namespace bin
 }  // namespace dart
 
 int main(int argc, char** argv) {
   dart::bin::main(argc, argv);
   UNREACHABLE();
 }