[compiler,modules] Introduce JS operators for module loads and stores.

src/compiler/js-generic-lowering.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/js-generic-lowering.h"
 
 #include "src/ast/ast.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/compiler/common-operator.h"
@@ skipping 607 matching lines @@
   ExternalReference message_address =
       ExternalReference::address_of_pending_message_obj(isolate());
   node->RemoveInput(NodeProperties::FirstContextIndex(node));
   node->InsertInput(zone(), 0, jsgraph()->ExternalConstant(message_address));
   node->InsertInput(zone(), 1, jsgraph()->IntPtrConstant(0));
   StoreRepresentation representation(MachineRepresentation::kTagged,
                                      kNoWriteBarrier);
   NodeProperties::ChangeOp(node, machine()->Store(representation));
 }
 
+void JSGenericLowering::LowerJSLoadModule(Node* node) {
+  UNREACHABLE();  // Eliminated in typed lowering.
+}
+
+void JSGenericLowering::LowerJSStoreModule(Node* node) {
+  UNREACHABLE();  // Eliminated in typed lowering.
+}
+
 void JSGenericLowering::LowerJSGeneratorStore(Node* node) {
   UNREACHABLE();  // Eliminated in typed lowering.
 }
 
 void JSGenericLowering::LowerJSGeneratorRestoreContinuation(Node* node) {
   UNREACHABLE();  // Eliminated in typed lowering.
 }
 
 void JSGenericLowering::LowerJSGeneratorRestoreRegister(Node* node) {
   UNREACHABLE();  // Eliminated in typed lowering.
@@ skipping 56 matching lines @@
 }
 
 
 MachineOperatorBuilder* JSGenericLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8