[Interpreter] Add support for loading from / storing to outer context variables.

src/compiler/interpreter-assembler.cc

 // Copyright 2015 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/interpreter-assembler.h"
 
 #include <ostream>
 
 #include "src/code-factory.h"
 #include "src/compiler/graph.h"
@@ skipping 298 matching lines @@
                 Int32Constant(Context::kHeaderSize - kHeapObjectTag));
   return raw_assembler_->Load(kMachAnyTagged, context, offset);
 }
 
 
 Node* InterpreterAssembler::StoreContextSlot(Node* context, Node* slot_index,
                                              Node* value) {
   Node* offset =
       IntPtrAdd(WordShl(slot_index, kPointerSizeLog2),
                 Int32Constant(Context::kHeaderSize - kHeapObjectTag));
-  return raw_assembler_->Store(kMachAnyTagged, context, offset, value);
+  return raw_assembler_->Store(kMachAnyTagged, context, offset, value,
+                               kFullWriteBarrier);

[Michael Starzinger, 2015/10/26 13:28:13]

Hehe, yeah, this is a case of "scary default argument that everyone was worried
about finally hit us". :)

[rmcilroy, 2015/10/26 15:37:51]

Acknowledged.

 }
 
 
 Node* InterpreterAssembler::LoadTypeFeedbackVector() {
   Node* function = raw_assembler_->Load(
       kMachAnyTagged, RegisterFileRawPointer(),
       IntPtrConstant(InterpreterFrameConstants::kFunctionFromRegisterPointer));
   Node* shared_info =
       LoadObjectField(function, JSFunction::kSharedFunctionInfoOffset);
   Node* vector =
@@ skipping 296 matching lines @@
   return raw_assembler_->schedule();
 }
 
 
 Zone* InterpreterAssembler::zone() { return raw_assembler_->zone(); }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8