Towards removing dependency from generic lowering on compilation info.

src/compiler/js-graph.h

 // 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.
 
 #ifndef V8_COMPILER_JS_GRAPH_H_
 #define V8_COMPILER_JS_GRAPH_H_
 
 #include "src/compiler/common-node-cache.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph.h"
@@ skipping 55 matching lines @@
   Node* Float64Constant(double value);
 
   // Creates an ExternalConstant node, usually canonicalized.
   Node* ExternalConstant(ExternalReference ref);
 
   Node* SmiConstant(int32_t immediate) {
     DCHECK(Smi::IsValid(immediate));
     return Constant(immediate);
   }
 
+  Node* LoadObjectField(Node* object, int offset, Node* context, Node* effect,
+                        MachineType type = kMachAnyTagged) {

[titzer, 2014/08/20 12:54:38]

This doesn't seem like the right place for this method...I think it's better to
keep it contained to JSContextSpecialization.

[sigurds, 2014/08/22 14:01:33]

Done.

+    // TODO(sigurds) Use simplified load here once it is ready.
+    MachineOperatorBuilder machine(zone());
+    Node* field_load = graph()->NewNode(machine.Load(type), object,
+                                        Int32Constant(offset - kHeapObjectTag),
+                                        context, effect);
+    return field_load;
+  }
+
   JSOperatorBuilder* javascript() { return &javascript_; }
   CommonOperatorBuilder* common() { return common_; }
   Graph* graph() { return graph_; }
   Zone* zone() { return graph()->zone(); }
   Isolate* isolate() { return zone()->isolate(); }
 
  private:
   Graph* graph_;
   CommonOperatorBuilder* common_;
   JSOperatorBuilder javascript_;
@@ skipping 15 matching lines @@
   Node* NumberConstant(double value);
   Node* NewNode(Operator* op);
 
   Factory* factory() { return isolate()->factory(); }
 };
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif