[esnext] prototype runtime implementation for async functions

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index 777f4297cb903fe950a76f8ccf8087fefb1cf56c..6806aa0aa7bc4c3d27f8a29aa5ed7e48d9d93e8f 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -970,7 +970,8 @@ enum FunctionKind {
   kClassConstructor =
       kBaseConstructor | kSubclassConstructor | kDefaultConstructor,
   kAsyncArrowFunction = kArrowFunction | kAsyncFunction,
-  kAsyncConciseMethod = kAsyncFunction | kConciseMethod
+  kAsyncConciseMethod = kAsyncFunction | kConciseMethod,
+  kArrowGeneratorFunction = kGeneratorFunction | kArrowFunction
 };
 
 inline bool IsValidFunctionKind(FunctionKind kind) {
@@ -988,7 +989,8 @@ inline bool IsValidFunctionKind(FunctionKind kind) {
          kind == FunctionKind::kSubclassConstructor ||
          kind == FunctionKind::kAsyncFunction ||
          kind == FunctionKind::kAsyncArrowFunction ||
-         kind == FunctionKind::kAsyncConciseMethod;
+         kind == FunctionKind::kAsyncConciseMethod ||
+         kind == FunctionKind::kArrowGeneratorFunction;
 }
 
 
@@ -1069,6 +1071,11 @@ inline uint32_t ObjectHash(Address address) {
                                kPointerSizeLog2);
 }
 
+enum class AsyncFunctionResumeMode {
+  Normal,
+  Throw,
+};

[Dan Ehrenberg, 2016/05/04 22:52:36]

This is not used in this patch, only in the subsequent one.

+
 }  // namespace internal
 }  // namespace v8