WIP [esnext] implement async iteration proposal

src/runtime/runtime.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_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include <memory>
 
 #include "src/allocation.h"
@@ skipping 229 matching lines @@
   F(ConvertReceiver, 1, 1)                 \
   F(IsFunction, 1, 1)                      \
   F(FunctionToString, 1, 1)
 
 #define FOR_EACH_INTRINSIC_GENERATOR(F) \
   F(CreateJSGeneratorObject, 2, 1)      \
   F(GeneratorClose, 1, 1)               \
   F(GeneratorGetFunction, 1, 1)         \
   F(GeneratorGetReceiver, 1, 1)         \
   F(GeneratorGetInputOrDebugPos, 1, 1)  \
+  F(GeneratorGetAwaitInput, 1, 1)       \
+  F(GeneratorSaveInputForAwait, 1, 1)   \
   F(GeneratorGetContinuation, 1, 1)     \
   F(GeneratorGetSourcePosition, 1, 1)   \
   F(GeneratorGetResumeMode, 1, 1)
 
 #ifdef V8_I18N_SUPPORT
 #define FOR_EACH_INTRINSIC_I18N(F)           \
   F(CanonicalizeLanguageTag, 1, 1)           \
   F(AvailableLocalesOf, 1, 1)                \
   F(GetDefaultICULocale, 0, 1)               \
   F(GetLanguageTagVariants, 1, 1)            \
@@ skipping 66 matching lines @@
   F(ThrowCalledOnNullOrUndefined, 1, 1)             \
   F(ThrowConstructedNonConstructable, 1, 1)         \
   F(ThrowDerivedConstructorReturnedNonObject, 0, 1) \
   F(ThrowGeneratorRunning, 0, 1)                    \
   F(ThrowIllegalInvocation, 0, 1)                   \
   F(ThrowIncompatibleMethodReceiver, 2, 1)          \
   F(ThrowInvalidHint, 1, 1)                         \
   F(ThrowInvalidStringLength, 0, 1)                 \
   F(ThrowIteratorResultNotAnObject, 1, 1)           \
   F(ThrowSymbolIteratorInvalid, 0, 1)               \
+  F(ThrowSymbolAsyncIteratorInvalid, 0, 1)          \
   F(ThrowNotGeneric, 1, 1)                          \
   F(ThrowReferenceError, 1, 1)                      \
   F(ThrowStackOverflow, 0, 1)                       \
   F(ThrowTypeError, -1 /* >= 1 */, 1)               \
   F(ThrowUndefinedOrNullToObject, 1, 1)             \
   F(Typeof, 1, 1)                                   \
-  F(UnwindAndFindExceptionHandler, 0, 1)
+  F(UnwindAndFindExceptionHandler, 0, 1)            \
+  F(CreateAsyncFromSyncIterator, 1, 1)
 
 #define FOR_EACH_INTRINSIC_LITERALS(F) \
   F(CreateRegExpLiteral, 4, 1)         \
   F(CreateObjectLiteral, 4, 1)         \
   F(CreateArrayLiteral, 4, 1)          \
   F(CreateArrayLiteralStubBailout, 3, 1)
 
 #define FOR_EACH_INTRINSIC_LIVEEDIT(F)              \
   F(LiveEditFindSharedFunctionInfosForScript, 1, 1) \
   F(LiveEditGatherCompileInfo, 2, 1)                \
@@ skipping 48 matching lines @@
   F(GetOwnPropertyKeys, 2, 1)                        \
   F(GetInterceptorInfo, 1, 1)                        \
   F(ToFastProperties, 1, 1)                          \
   F(AllocateHeapNumber, 0, 1)                        \
   F(NewObject, 2, 1)                                 \
   F(FinalizeInstanceSize, 1, 1)                      \
   F(LoadMutableDouble, 2, 1)                         \
   F(TryMigrateInstance, 1, 1)                        \
   F(IsJSGlobalProxy, 1, 1)                           \
   F(DefineAccessorPropertyUnchecked, 5, 1)           \
-  F(DefineDataPropertyInLiteral, 6, 1)               \
+  F(DefineDataPropertyInLiteral, 4, 1)               \

[Dan Ehrenberg, 2017/01/13 19:41:09]

This looks like a broken rebase.

[caitp, 2017/01/13 20:11:52]

didn't get any merge conflicts here last time I rebased, I think it's probably
just out of date, but I'll check on Monday

   F(GetDataProperty, 2, 1)                           \
   F(GetConstructorName, 1, 1)                        \
   F(HasFastPackedElements, 1, 1)                     \
   F(ValueOf, 1, 1)                                   \
   F(IsJSReceiver, 1, 1)                              \
   F(ClassOf, 1, 1)                                   \
   F(CopyDataProperties, 2, 1)                        \
   F(DefineGetterPropertyUnchecked, 4, 1)             \
   F(DefineSetterPropertyUnchecked, 4, 1)             \
   F(ToObject, 1, 1)                                  \
@@ skipping 726 matching lines @@
 
 class DeclareGlobalsEvalFlag : public BitField<bool, 0, 1> {};
 class DeclareGlobalsNativeFlag : public BitField<bool, 1, 1> {};
 STATIC_ASSERT(LANGUAGE_END == 2);
 class DeclareGlobalsLanguageMode : public BitField<LanguageMode, 2, 1> {};
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_