[async-iteration] add support for for-await-of loops in Async Functions

src/interpreter/bytecode-array-builder.cc

Index: src/interpreter/bytecode-array-builder.cc
diff --git a/src/interpreter/bytecode-array-builder.cc b/src/interpreter/bytecode-array-builder.cc
index 96089be2f2a3f99720fd321e1ffb6ad81725d8a7..ecbd7bd938417054a1cb5af98e73b7b44e6e05a1 100644
--- a/src/interpreter/bytecode-array-builder.cc
+++ b/src/interpreter/bytecode-array-builder.cc
@@ -620,6 +620,13 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::LoadIteratorProperty(
   return *this;
 }
 
+BytecodeArrayBuilder& BytecodeArrayBuilder::LoadAsyncIteratorProperty(
+    Register object, int feedback_slot) {
+  size_t name_index = AsyncIteratorSymbolConstantPoolEntry();
+  OutputLdaNamedProperty(object, name_index, feedback_slot);
+  return *this;
+}
+
 BytecodeArrayBuilder& BytecodeArrayBuilder::StoreDataPropertyInLiteral(
     Register object, Register name, DataPropertyInLiteralFlags flags,
     int feedback_slot) {