[turbofan] New operator for loads of DYNAMIC_[GLOBAL,LOCAL].

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/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/js-generic-lowering.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/machine-operator.h"
@@ skipping 429 matching lines @@
                             graph()->start()));
   }
   node->ReplaceInput(2, NodeProperties::GetValueInput(node, 1));
   node->ReplaceInput(1, jsgraph()->Int32Constant(Context::SlotOffset(
                             static_cast<int>(access.index()))));
   node->set_op(
       machine()->Store(StoreRepresentation(kMachAnyTagged, kFullWriteBarrier)));
 }
 
 
+void JSGenericLowering::LowerJSLoadDynamicGlobal(Node* node) {
+  const DynamicGlobalAccess& access = DynamicGlobalAccessOf(node->op());
+  Runtime::FunctionId function_id =
+      (access.mode() == CONTEXTUAL) ? Runtime::kLoadLookupSlot
+                                    : Runtime::kLoadLookupSlotNoReferenceError;
+  Node* projection = graph()->NewNode(common()->Projection(0), node);
+  NodeProperties::ReplaceWithValue(node, projection, node, node);
+  node->InsertInput(zone(), 1, jsgraph()->Constant(access.name()));
+  ReplaceWithRuntimeCall(node, function_id);
+  projection->ReplaceInput(0, node);
+}
+
+
+void JSGenericLowering::LowerJSLoadDynamicContext(Node* node) {
+  const DynamicContextAccess& access = DynamicContextAccessOf(node->op());
+  Node* projection = graph()->NewNode(common()->Projection(0), node);
+  NodeProperties::ReplaceWithValue(node, projection, node, node);
+  node->InsertInput(zone(), 1, jsgraph()->Constant(access.name()));
+  ReplaceWithRuntimeCall(node, Runtime::kLoadLookupSlot);
+  projection->ReplaceInput(0, node);
+}
+
+
 void JSGenericLowering::LowerJSCreateClosure(Node* node) {
   CreateClosureParameters p = CreateClosureParametersOf(node->op());
   node->InsertInput(zone(), 1, jsgraph()->HeapConstant(p.shared_info()));
   node->InsertInput(zone(), 2, jsgraph()->BooleanConstant(p.pretenure()));
   ReplaceWithRuntimeCall(node, Runtime::kNewClosure);
 }
 
 
 void JSGenericLowering::LowerJSCreateLiteralArray(Node* node) {
   int literal_flags = OpParameter<int>(node->op());
@@ skipping 146 matching lines @@
 }
 
 
 MachineOperatorBuilder* JSGenericLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8