Generate KeyedLoadDictionaryElementStub with Hydrogen

src/flag-definitions.h

 // 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 184 matching lines @@
 DEFINE_implication(harmony, harmony_numeric_literals)
 DEFINE_implication(harmony, harmony_strings)
 DEFINE_implication(harmony, harmony_arrays)
 DEFINE_implication(harmony, harmony_maths)
 DEFINE_implication(harmony_modules, harmony_scoping)
 DEFINE_implication(harmony_observation, harmony_collections)
 
 // Flags for experimental implementation features.
 DEFINE_bool(packed_arrays, true, "optimizes arrays that have no holes")
 DEFINE_bool(smi_only_arrays, true, "tracks arrays with only smi values")
+DEFINE_bool(compiled_keyed_dictionary_loads, false,
+            "use optimizing compiler to generate keyed dictionary load stubs")
 DEFINE_bool(clever_optimizations, true,
             "Optimize object size, Array shift, DOM strings and string +")
 DEFINE_bool(pretenuring, true, "allocate objects in old space")
 // TODO(hpayer): We will remove this flag as soon as we have pretenuring
 // support for specific allocation sites.
 DEFINE_bool(pretenuring_call_new, false, "pretenure call new")
 DEFINE_bool(allocation_site_pretenuring, false,
             "pretenure with allocation sites")
 DEFINE_bool(track_fields, true, "track fields with only smi values")
 DEFINE_bool(track_double_fields, true, "track fields with double values")
@@ skipping 675 matching lines @@
 #undef DEFINE_ALIAS_float
 #undef DEFINE_ALIAS_args
 
 #undef FLAG_MODE_DECLARE
 #undef FLAG_MODE_DEFINE
 #undef FLAG_MODE_DEFINE_DEFAULTS
 #undef FLAG_MODE_META
 #undef FLAG_MODE_DEFINE_IMPLICATIONS
 
 #undef COMMA