[Atomics] Make Atomics.exchange a builtin using TF

src/compiler/instruction-selector.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/compiler/instruction-selector.h"
 
 #include <limits>
 
 #include "src/base/adapters.h"
 #include "src/compiler/compiler-source-position-table.h"
@@ skipping 1431 matching lines @@
       MarkAsWord32(node);
       MarkPairProjectionsAsWord32(node);
       return VisitWord32PairSar(node);
     case IrOpcode::kAtomicLoad: {
       LoadRepresentation type = LoadRepresentationOf(node->op());
       MarkAsRepresentation(type.representation(), node);
       return VisitAtomicLoad(node);
     }
     case IrOpcode::kAtomicStore:
       return VisitAtomicStore(node);
+    case IrOpcode::kAtomicExchange: {
+      MachineType type = AtomicExchangeRepresentationOf(node->op());
+      MarkAsRepresentation(type.representation(), node);
+      return VisitAtomicExchange(node);
+    }
     case IrOpcode::kProtectedLoad: {
       LoadRepresentation type = LoadRepresentationOf(node->op());
       MarkAsRepresentation(type.representation(), node);
       return VisitProtectedLoad(node);
     }
     case IrOpcode::kUnsafePointerAdd:
       MarkAsRepresentation(MachineType::PointerRepresentation(), node);
       return VisitUnsafePointerAdd(node);
     case IrOpcode::kFloat32x4Splat:
       return MarkAsSimd128(node), VisitFloat32x4Splat(node);
@@ skipping 1236 matching lines @@
   return new (instruction_zone()) FrameStateDescriptor(
       instruction_zone(), state_info.type(), state_info.bailout_id(),
       state_info.state_combine(), parameters, locals, stack,
       state_info.shared_info(), outer_state);
 }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8