[esnext] prototype runtime implementation for async functions

test/mjsunit/mjsunit.status

 # 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
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 134 matching lines @@
   # Assumptions about optimization need investigation in TurboFan.
   'regress-sync-optimized-lists': [PASS, NO_VARIANTS],
   'regress/regress-store-uncacheable': [PASS, NO_VARIANTS],
 
   # issue 4078:
   'allocation-site-info': [PASS, NO_VARIANTS],
 
   # TODO(turbofan): The escape analysis needs some investigation.
   'compiler/escape-analysis-*': [PASS, NO_VARIANTS],
 
+  # TODO(turbofan, caitp): Figure out problem with async arrow functions and
+  #                        throw resumption in TurboFan
+  'harmony/async-await-basic': [PASS, NO_VARIANTS],
+
   ##############################################################################
   # Too slow in debug mode with --stress-opt mode.
   'compiler/regress-stacktrace-methods': [PASS, ['mode == debug', SKIP]],
   'compiler/regress-funcaller': [PASS, ['mode == debug', SKIP]],
   'regress/regress-2318': [PASS, ['mode == debug', SKIP]],
   'regress/regress-create-exception': [PASS, ['mode == debug', SKIP]],
 
   ##############################################################################
   # Too slow in debug mode for validation of elements.
   'regress/regress-430201': [PASS, ['mode == debug', SKIP]],
@@ skipping 688 matching lines @@
 ##############################################################################
 ['gcov_coverage', {
   # Tests taking too long.
   'array-functions-prototype-misc': [SKIP],
 
   # Stack overflow.
   'big-array-literal': [SKIP],
 }],  # 'gcov_coverage'
 
 ]