Remove PropertyCell space

src/x64/lithium-x64.cc

Index: src/x64/lithium-x64.cc
diff --git a/src/x64/lithium-x64.cc b/src/x64/lithium-x64.cc
index 2b67ce96cc66956f0cc8fee9c81089b86b49a295..9e6a65526b8056d94d0ac4fb2b634fc33c340f1f 100644
--- a/src/x64/lithium-x64.cc
+++ b/src/x64/lithium-x64.cc
@@ -2083,14 +2083,6 @@ LInstruction* LChunkBuilder::DoConstant(HConstant* instr) {
 }
 
 
-LInstruction* LChunkBuilder::DoLoadGlobalCell(HLoadGlobalCell* instr) {
-  LLoadGlobalCell* result = new(zone()) LLoadGlobalCell;
-  return instr->RequiresHoleCheck()
-      ? AssignEnvironment(DefineAsRegister(result))
-      : DefineAsRegister(result);
-}
-
-
 LInstruction* LChunkBuilder::DoLoadGlobalGeneric(HLoadGlobalGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), rsi);
   LOperand* global_object =
@@ -2106,16 +2098,6 @@ LInstruction* LChunkBuilder::DoLoadGlobalGeneric(HLoadGlobalGeneric* instr) {
 }
 
 
-LInstruction* LChunkBuilder::DoStoreGlobalCell(HStoreGlobalCell* instr) {
-  LOperand* value = UseRegister(instr->value());
-  // Use a temp to avoid reloading the cell value address in the case where
-  // we perform a hole check.
-  return instr->RequiresHoleCheck()
-      ? AssignEnvironment(new(zone()) LStoreGlobalCell(value, TempRegister()))
-      : new(zone()) LStoreGlobalCell(value, NULL);
-}
-
-
 LInstruction* LChunkBuilder::DoLoadContextSlot(HLoadContextSlot* instr) {
   LOperand* context = UseRegisterAtStart(instr->value());
   LInstruction* result =