Optimize Map/Set.prototype.forEach

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index b97af64f838b6c2386c4b90b914bf82f0b0a2fdf..2d264d83f8db350a4f066bca665cdd5c3c0b7619 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -1611,6 +1611,31 @@ RUNTIME_FUNCTION(Runtime_SetIteratorNext) {
 }
 
 
+RUNTIME_FUNCTION(Runtime_SetIteratorCurrentKey) {
+  SealHandleScope shs(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_CHECKED(JSSetIterator, holder, 0);
+  return holder->CurrentKey();
+}
+
+
+RUNTIME_FUNCTION(Runtime_SetIteratorHasMore) {
+  SealHandleScope shs(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_CHECKED(JSSetIterator, holder, 0);
+  return isolate->heap()->ToBoolean(holder->HasMore());
+}
+
+
+RUNTIME_FUNCTION(Runtime_SetIteratorMoveNext) {
+  SealHandleScope shs(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_CHECKED(JSSetIterator, holder, 0);
+  holder->MoveNext();
+  return isolate->heap()->undefined_value();
+}
+
+
 RUNTIME_FUNCTION(Runtime_MapInitialize) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);
@@ -1715,6 +1740,39 @@ RUNTIME_FUNCTION(Runtime_MapIteratorNext) {
 }
 
 
+RUNTIME_FUNCTION(Runtime_MapIteratorCurrentKey) {
+  SealHandleScope shs(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_CHECKED(JSMapIterator, holder, 0);
+  return holder->CurrentKey();
+}
+
+
+RUNTIME_FUNCTION(Runtime_MapIteratorCurrentValue) {
+  SealHandleScope shs(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_CHECKED(JSMapIterator, holder, 0);
+  return holder->CurrentValue();
+}
+
+
+RUNTIME_FUNCTION(Runtime_MapIteratorHasMore) {
+  SealHandleScope shs(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_CHECKED(JSMapIterator, holder, 0);
+  return isolate->heap()->ToBoolean(holder->HasMore());
+}
+
+
+RUNTIME_FUNCTION(Runtime_MapIteratorMoveNext) {
+  SealHandleScope shs(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_CHECKED(JSMapIterator, holder, 0);
+  holder->MoveNext();
+  return isolate->heap()->undefined_value();
+}
+
+
 static Handle<JSWeakCollection> WeakCollectionInitialize(
     Isolate* isolate,
     Handle<JSWeakCollection> weak_collection) {