Experimental scanner: restore the MODE_FLAGS for tests.

tools/run-tests.py

 #!/usr/bin/env python
 #
 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 37 matching lines @@
 
 ARCH_GUESS = utils.DefaultArch()
 DEFAULT_TESTS = ["lexer", "mjsunit", "cctest"]
 TIMEOUT_DEFAULT = 60
 TIMEOUT_SCALEFACTOR = {"debug"   : 4,
                        "release" : 1 }
 
 # Use this to run several variants of the tests.
 VARIANT_FLAGS = [[]]
 MODE_FLAGS = {
-    "debug"   : [],
-    "release" : []}
+    "debug"   : ["--nobreak-on-abort", "--nodead-code-elimination",
+                 "--nofold-constants", "--enable-slow-asserts",
+                 "--debug-code", "--verify-heap"],
+    "release" : ["--nobreak-on-abort", "--nodead-code-elimination",
+                 "--nofold-constants"]}
 
 SUPPORTED_ARCHS = ["android_arm",
                    "android_ia32",
                    "arm",
                    "ia32",
                    "mipsel",
                    "nacl_ia32",
                    "nacl_x64",
                    "x64"]
 # Double the timeout for these:
@@ skipping 327 matching lines @@
   except KeyboardInterrupt:
     return 1
 
   if options.time:
     verbose.PrintTestDurations(suites, overall_duration)
   return exit_code
 
 
 if __name__ == "__main__":
   sys.exit(Main())