Separate Cell and PropertyCell spaces

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 2ca585d63537d803afa097ac34f52a0580f26919..536396051e0735986104b862ec792c44bde0a11a 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -2460,8 +2460,7 @@ void LCodeGen::DoInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr) {
   Register map = ToRegister(instr->temp());
   __ movq(map, FieldOperand(object, HeapObject::kMapOffset));
   __ bind(deferred->map_check());  // Label for calculating code patching.
-  Handle<JSGlobalPropertyCell> cache_cell =
-      factory()->NewJSGlobalPropertyCell(factory()->the_hole_value());
+  Handle<Cell> cache_cell = factory()->NewCell(factory()->the_hole_value());
   __ movq(kScratchRegister, cache_cell, RelocInfo::GLOBAL_PROPERTY_CELL);
   __ cmpq(map, Operand(kScratchRegister, 0));
   __ j(not_equal, &cache_miss, Label::kNear);
@@ -2631,7 +2630,7 @@ void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) {
 
 void LCodeGen::DoStoreGlobalCell(LStoreGlobalCell* instr) {
   Register value = ToRegister(instr->value());
-  Handle<JSGlobalPropertyCell> cell_handle = instr->hydrogen()->cell();
+  Handle<Cell> cell_handle = instr->hydrogen()->cell();
 
   // If the cell we are storing to contains the hole it could have
   // been deleted from the property dictionary. In that case, we need