[test] Differentiate between exhaustive and default testing variants.

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 72 matching lines @@
     "webkit",
     "intl",
   ],
   "unittests": [
     "unittests",
   ],
 }
 
 TIMEOUT_DEFAULT = 60
 
-VARIANTS = ["default", "stress", "turbofan", "nocrankshaft"]
+VARIANTS = ["default", "stress", "turbofan"]
 
 EXHAUSTIVE_VARIANTS = VARIANTS + [
-  # TODO(machenbach): Add always opt turbo variant.
+  "nocrankshaft",
+  "turbofan_opt",
 ]
 
 DEBUG_FLAGS = ["--nohard-abort", "--nodead-code-elimination",
                "--nofold-constants", "--enable-slow-asserts",
                "--debug-code", "--verify-heap"]
 RELEASE_FLAGS = ["--nohard-abort", "--nodead-code-elimination",
                  "--nofold-constants"]
 
 MODES = {
   "debug": {
@@ skipping 644 matching lines @@
     verbose.PrintTestDurations(suites, overall_duration)
 
   if num_tests == 0:
     print("Warning: no tests were run!")
 
   return exit_code
 
 
 if __name__ == "__main__":
   sys.exit(Main())