Move generator-close on exception from the generator function to the GeneratorResume builtin.

src/ast/ast.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_AST_AST_H_
 #define V8_AST_AST_H_
 
 #include "src/ast/ast-types.h"
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/modules.h"
@@ skipping 2524 matching lines @@
   }
   bool is_await() const { return suspend_type() == SuspendFlags::kAwait; }
   bool is_async_generator() const {
     return generator_type() == SuspendFlags::kAsyncGenerator;
   }
   inline bool IsNonInitialAsyncGeneratorYield() const {
     // Return true if is_async_generator() && !is_await() && yield_id() > 0
     return suspend_id() > 0 && (flags() & SuspendFlags::kAsyncGeneratorAwait) ==
                                    SuspendFlags::kAsyncGenerator;
   }
+  inline bool IsNonInitialGeneratorYield() const {
+    // Return true if is_generator() && !is_await() && yield_id() > 0
+    return suspend_id() > 0 && (flags() == SuspendFlags::kGeneratorYield);
+  }
 
   void set_generator_object(Expression* e) { generator_object_ = e; }
   void set_expression(Expression* e) { expression_ = e; }
   void set_suspend_id(int id) { suspend_id_ = id; }
   void set_suspend_type(SuspendFlags type) {
     DCHECK_EQ(0, static_cast<int>(type & ~SuspendFlags::kSuspendTypeMask));
     bit_field_ = FlagsField::update(bit_field_, type);
   }
 
  private:
@@ skipping 1156 matching lines @@
                                     : NULL;                                   \
   }
 AST_NODE_LIST(DECLARE_NODE_FUNCTIONS)
 #undef DECLARE_NODE_FUNCTIONS
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_AST_H_