ARM/ARM64: Optimise HLoadNamedField and HStoreNamedField.

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 93dc830dab30e3630bac62966133e5c35f3e8843..323c1a3680983b70226d330808595156a60e3d61 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -2132,7 +2132,10 @@ LInstruction* LChunkBuilder::DoStoreContextSlot(HStoreContextSlot* instr) {
 
 LInstruction* LChunkBuilder::DoLoadNamedField(HLoadNamedField* instr) {
   LOperand* obj = UseRegisterAtStart(instr->object());
-  return DefineAsRegister(new(zone()) LLoadNamedField(obj));
+  HValue* h_obj_properties = instr->object_properties();
+  LOperand* obj_properties =
+      (h_obj_properties != NULL) ? UseRegisterAtStart(h_obj_properties) : NULL;
+  return DefineAsRegister(new(zone()) LLoadNamedField(obj, obj_properties));
 }
 
 
@@ -2323,7 +2326,11 @@ LInstruction* LChunkBuilder::DoStoreNamedField(HStoreNamedField* instr) {
   // We need a temporary register for write barrier of the map field.
   LOperand* temp = needs_write_barrier_for_map ? TempRegister() : NULL;
 
-  return new(zone()) LStoreNamedField(obj, val, temp);
+  HValue* h_obj_properties = instr->object_properties();
+  LOperand* obj_properties =
+      (h_obj_properties != NULL) ? UseRegister(h_obj_properties) : NULL;
+
+  return new(zone()) LStoreNamedField(obj, val, temp, obj_properties);
 }