[esnext] prototype runtime implementation for async functions

src/contexts.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CONTEXTS_H_
 #define V8_CONTEXTS_H_
 
 #include "src/heap/heap.h"
 #include "src/objects.h"
 
@@ skipping 123 matching lines @@
   V(OBSERVERS_ENQUEUE_SPLICE_INDEX, JSFunction, observers_enqueue_splice)     \
   V(OBSERVERS_NOTIFY_CHANGE_INDEX, JSFunction, observers_notify_change)       \
   V(PROMISE_CATCH_INDEX, JSFunction, promise_catch)                           \
   V(PROMISE_CHAIN_INDEX, JSFunction, promise_chain)                           \
   V(PROMISE_CREATE_INDEX, JSFunction, promise_create)                         \
   V(PROMISE_FUNCTION_INDEX, JSFunction, promise_function)                     \
   V(PROMISE_HAS_USER_DEFINED_REJECT_HANDLER_INDEX, JSFunction,                \
     promise_has_user_defined_reject_handler)                                  \
   V(PROMISE_REJECT_INDEX, JSFunction, promise_reject)                         \
   V(PROMISE_RESOLVE_INDEX, JSFunction, promise_resolve)                       \
+  V(PROMISE_CREATE_RESOLVED_INDEX, JSFunction, promise_create_resolved)       \
+  V(PROMISE_CREATE_REJECTED_INDEX, JSFunction, promise_create_rejected)       \

[caitp (gmail), 2016/04/16 18:33:03]

admittedly, PromiseCreateResolved doesn't really need a context slot

+  V(ASYNC_FUNCTION_START_INDEX, JSFunction, async_function_start)             \
   V(PROMISE_THEN_INDEX, JSFunction, promise_then)                             \
   V(RANGE_ERROR_FUNCTION_INDEX, JSFunction, range_error_function)             \
   V(REFERENCE_ERROR_FUNCTION_INDEX, JSFunction, reference_error_function)     \
   V(SET_ADD_METHOD_INDEX, JSFunction, set_add)                                \
   V(SET_DELETE_METHOD_INDEX, JSFunction, set_delete)                          \
   V(SET_HAS_METHOD_INDEX, JSFunction, set_has)                                \
   V(STACK_OVERFLOW_BOILERPLATE_INDEX, JSObject, stack_overflow_boilerplate)   \
   V(SYNTAX_ERROR_FUNCTION_INDEX, JSFunction, syntax_error_function)           \
   V(TYPE_ERROR_FUNCTION_INDEX, JSFunction, type_error_function)               \
   V(URI_ERROR_FUNCTION_INDEX, JSFunction, uri_error_function)
@@ skipping 416 matching lines @@
 #endif
 
   STATIC_ASSERT(kHeaderSize == Internals::kContextHeaderSize);
   STATIC_ASSERT(EMBEDDER_DATA_INDEX == Internals::kContextEmbedderDataIndex);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CONTEXTS_H_