[builtins] Implement %TypedArray%.prototype.map in the CSA

src/runtime/runtime-typedarray.cc

Index: src/runtime/runtime-typedarray.cc
diff --git a/src/runtime/runtime-typedarray.cc b/src/runtime/runtime-typedarray.cc
index eeaa40e5ea648df51d7f5583df55ce5ea63d8ebe..afebda25a520f544709f9c6fc5e02120ca6d1554 100644
--- a/src/runtime/runtime-typedarray.cc
+++ b/src/runtime/runtime-typedarray.cc
@@ -177,9 +177,8 @@ RUNTIME_FUNCTION(Runtime_TypedArraySortFast) {
   CONVERT_ARG_HANDLE_CHECKED(Object, target_obj, 0);
 
   Handle<JSTypedArray> array;
-  const char* method = "%TypedArray%.prototype.sort";
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, array, JSTypedArray::Validate(isolate, target_obj, method));
+      isolate, array, JSTypedArray::Validate(isolate, target_obj));
 
   // This line can be removed when JSTypedArray::Validate throws
   // if array.[[ViewedArrayBuffer]] is neutered(v8:4648)
@@ -260,5 +259,20 @@ RUNTIME_FUNCTION(Runtime_IsSharedInteger32TypedArray) {
                                     obj->type() == kExternalInt32Array);
 }
 
+RUNTIME_FUNCTION(Runtime_TypedArraySpeciesCreateByLength) {
+  HandleScope scope(isolate);
+  DCHECK(args.length() == 2);
+  Handle<JSTypedArray> exemplar = args.at<JSTypedArray>(1);
+  Handle<Object> length = args.at(2);
+  int argc = 1;
+  ScopedVector<Handle<Object>> argv(argc);
+  argv[0] = length;
+  Handle<JSTypedArray> result_array;
+  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
+      isolate, result_array,
+      JSTypedArray::SpeciesCreate(isolate, exemplar, argc, argv.start()));
+  return *result_array;
+}
+
 }  // namespace internal
 }  // namespace v8