WIP [esnext] implement async iteration proposal

src/runtime/runtime.h

Index: src/runtime/runtime.h
diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h
index 7fb64423d4ccf909f929c826fb90d4b84422606e..2054efbe30a596d068b869d93d7e956cbd30aa7c 100644
--- a/src/runtime/runtime.h
+++ b/src/runtime/runtime.h
@@ -247,6 +247,8 @@ namespace internal {
   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)
@@ -333,13 +335,15 @@ namespace internal {
   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)         \
@@ -408,7 +412,7 @@ namespace internal {
   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just out of date, but I'll check on Monday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)                     \