[Atomics] Make Atomics.exchange a builtin using TF

src/compiler/code-assembler.cc

 // Copyright 2015 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/compiler/code-assembler.h"
 
 #include <ostream>
 
 #include "src/code-factory.h"
 #include "src/compiler/graph.h"
@@ skipping 444 matching lines @@
 Node* CodeAssembler::StoreNoWriteBarrier(MachineRepresentation rep, Node* base,
                                          Node* offset, Node* value) {
   return raw_assembler()->Store(rep, base, offset, value, kNoWriteBarrier);
 }
 
 Node* CodeAssembler::AtomicStore(MachineRepresentation rep, Node* base,
                                  Node* offset, Node* value) {
   return raw_assembler()->AtomicStore(rep, base, offset, value);
 }
 
+Node* CodeAssembler::AtomicExchange(MachineType type, Node* base, Node* offset,
+                                    Node* value) {
+  return raw_assembler()->AtomicExchange(type, base, offset, value);
+}
+
 Node* CodeAssembler::StoreRoot(Heap::RootListIndex root_index, Node* value) {
   DCHECK(Heap::RootCanBeWrittenAfterInitialization(root_index));
   Node* roots_array_start =
       ExternalConstant(ExternalReference::roots_array_start(isolate()));
   return StoreNoWriteBarrier(MachineRepresentation::kTagged, roots_array_start,
                              IntPtrConstant(root_index * kPointerSize), value);
 }
 
 Node* CodeAssembler::Retain(Node* value) {
   return raw_assembler()->Retain(value);
@@ skipping 383 matching lines @@
       }
     }
   }
 
   bound_ = true;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8