[turbofan] Add support for copy-on-write element stores.

src/code-factory.cc

 // Copyright 2014 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.
 
 #include "src/code-factory.h"
 
 #include "src/bootstrapper.h"
 #include "src/ic/ic.h"
 
 namespace v8 {
@@ skipping 492 matching lines @@
 }
 
 // static
 Callable CodeFactory::FastNewStrictArguments(Isolate* isolate,
                                              bool skip_stub_frame) {
   FastNewStrictArgumentsStub stub(isolate, skip_stub_frame);
   return make_callable(stub);
 }
 
 // static
+Callable CodeFactory::CopyFixedArray(Isolate* isolate) {
+  return Callable(isolate->builtins()->CopyFixedArray(),
+                  CopyFixedArrayDescriptor(isolate));
+}
+
+// static
 Callable CodeFactory::AllocateHeapNumber(Isolate* isolate) {
   AllocateHeapNumberStub stub(isolate);
   return make_callable(stub);
 }
 
 #define SIMD128_ALLOC(TYPE, Type, type, lane_count, lane_type) \
   Callable CodeFactory::Allocate##Type(Isolate* isolate) {     \
     Allocate##Type##Stub stub(isolate);                        \
     return make_callable(stub);                                \
   }
@@ skipping 67 matching lines @@
 }
 
 // static
 Callable CodeFactory::InterpreterOnStackReplacement(Isolate* isolate) {
   return Callable(isolate->builtins()->InterpreterOnStackReplacement(),
                   ContextOnlyDescriptor(isolate));
 }
 
 }  // namespace internal
 }  // namespace v8