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

test/unittests/compiler/interpreter-assembler-unittest.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 "test/unittests/compiler/interpreter-assembler-unittest.h"
 
 #include "src/code-factory.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/node.h"
 #include "src/interface-descriptors.h"
@@ skipping 479 matching lines @@
   TRACED_FOREACH(interpreter::Bytecode, bytecode, kBytecodes) {
     InterpreterAssemblerForTest m(this, bytecode);
     Node* context = m.Int32Constant(1);
     Node* slot_index = m.Int32Constant(22);
     Node* value = m.Int32Constant(100);
     Node* store_context_slot = m.StoreContextSlot(context, slot_index, value);
 
     Matcher<Node*> offset =
         IsIntPtrAdd(IsWordShl(slot_index, IsInt32Constant(kPointerSizeLog2)),
                     IsInt32Constant(Context::kHeaderSize - kHeapObjectTag));
-    EXPECT_THAT(store_context_slot,
-                m.IsStore(StoreRepresentation(kMachAnyTagged, kNoWriteBarrier),
-                          context, offset, value));
+    EXPECT_THAT(
+        store_context_slot,
+        m.IsStore(StoreRepresentation(kMachAnyTagged, kFullWriteBarrier),
+                  context, offset, value));
   }
 }
 
 
 TARGET_TEST_F(InterpreterAssemblerTest, LoadObjectField) {
   TRACED_FOREACH(interpreter::Bytecode, bytecode, kBytecodes) {
     InterpreterAssemblerForTest m(this, bytecode);
     Node* object = m.IntPtrConstant(0xdeadbeef);
     int offset = 16;
     Node* load_field = m.LoadObjectField(object, offset);
@@ skipping 95 matching lines @@
         feedback_vector,
         m.IsLoad(kMachAnyTagged, load_shared_function_info_matcher,
                  IsIntPtrConstant(SharedFunctionInfo::kFeedbackVectorOffset -
                                   kHeapObjectTag)));
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8