[Atomics] Make Atomics.compareExchange a builtin using TF

src/bootstrapper.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/bootstrapper.h"
 
 #include "src/accessors.h"
 #include "src/api-natives.h"
 #include "src/base/ieee754.h"
 #include "src/code-stubs.h"
@@ skipping 3719 matching lines @@
   DCHECK(atomics_object->IsJSObject());
   JSObject::AddProperty(global, name, atomics_object, DONT_ENUM);
 
   SimpleInstallFunction(atomics_object, factory->InternalizeUtf8String("load"),
                         Builtins::kAtomicsLoad, 2, true);
   SimpleInstallFunction(atomics_object, factory->InternalizeUtf8String("store"),
                         Builtins::kAtomicsStore, 3, true);
   SimpleInstallFunction(atomics_object,
                         factory->InternalizeUtf8String("exchange"),
                         Builtins::kAtomicsExchange, 3, true);
+  SimpleInstallFunction(atomics_object,
+                        factory->InternalizeUtf8String("compareExchange"),
+                        Builtins::kAtomicsCompareExchange, 4, true);
 }
 
 void Genesis::InitializeGlobal_harmony_array_prototype_values() {
   if (!FLAG_harmony_array_prototype_values) return;
   Handle<JSFunction> array_constructor(native_context()->array_function());
   Handle<JSObject> array_prototype(
       JSObject::cast(array_constructor->instance_prototype()));
   Handle<Object> values_iterator =
       JSObject::GetProperty(array_prototype, factory()->iterator_symbol())
           .ToHandleChecked();
@@ skipping 1379 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8