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

src/compiler/interpreter-assembler.cc

Index: src/compiler/interpreter-assembler.cc
diff --git a/src/compiler/interpreter-assembler.cc b/src/compiler/interpreter-assembler.cc
index 512bfb69e1fb5793646d83fc7587b0d80fe05cbe..3c2c4a3d38fe6140738ac717685067651a35e078 100644
--- a/src/compiler/interpreter-assembler.cc
+++ b/src/compiler/interpreter-assembler.cc
@@ -316,7 +316,8 @@ Node* InterpreterAssembler::StoreContextSlot(Node* context, Node* slot_index,
   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.

 }