Hydrogen support for context allocated harmony bindings.

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index 31f608345be255fceb5b5ab066677fe3835535f5..d1b6422e970dd4b068f5de64b5793e1e76dc270e 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -1798,7 +1798,8 @@ LInstruction* LChunkBuilder::DoStoreGlobalGeneric(HStoreGlobalGeneric* instr) {
 
 LInstruction* LChunkBuilder::DoLoadContextSlot(HLoadContextSlot* instr) {
   LOperand* context = UseRegisterAtStart(instr->value());
-  return DefineAsRegister(new LLoadContextSlot(context));
+  LInstruction* result = DefineAsRegister(new LLoadContextSlot(context));
+  return instr->RequiresHoleCheck() ? AssignEnvironment(result) : result;
 }
 
 
@@ -1812,7 +1813,8 @@ LInstruction* LChunkBuilder::DoStoreContextSlot(HStoreContextSlot* instr) {
     context = UseRegister(instr->context());
     value = UseRegister(instr->value());
   }
-  return new LStoreContextSlot(context, value);
+  LInstruction* result = new LStoreContextSlot(context, value);
+  return instr->RequiresHoleCheck() ? AssignEnvironment(result) : result;
 }