[turbofan] Typed lowering requires typed nodes.

src/compiler/js-typed-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/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/js-typed-lowering.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/operator-properties.h"
@@ skipping 729 matching lines @@
   Node* const input = node->InputAt(0);
   Reduction reduction = ReduceJSToStringInput(input);
   if (reduction.Changed()) {
     NodeProperties::ReplaceWithValue(node, reduction.replacement());
     return reduction;
   }
   return NoChange();
 }
 
 
-static bool IsGlobalObject(Node* node) {
-  return NodeProperties::IsTyped(node) &&
-         NodeProperties::GetBounds(node).upper->Is(Type::GlobalObject());
-}
-
-
 Reduction JSTypedLowering::ReduceJSLoadNamed(Node* node) {
-  if (IsGlobalObject(node->InputAt(0))) {
+  Node* object = NodeProperties::GetValueInput(node, 0);
+  Type* object_type = NodeProperties::GetBounds(object).upper;
+  if (object_type->Is(Type::GlobalObject())) {
     // Optimize global constants like "undefined", "Infinity", and "NaN".
     Handle<Name> name = LoadNamedParametersOf(node->op()).name().handle();
     Handle<Object> constant_value = factory()->GlobalConstantFor(name);
     if (!constant_value.is_null()) {
       Node* constant = jsgraph()->Constant(constant_value);
       NodeProperties::ReplaceWithValue(node, constant);
       return Replace(constant);
     }
   }
   return NoChange();
@@ skipping 332 matching lines @@
 }
 
 
 MachineOperatorBuilder* JSTypedLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8