Remake of the load elimination fix made earlier (r18884).

src/hydrogen-load-elimination.cc

Index: src/hydrogen-load-elimination.cc
diff --git a/src/hydrogen-load-elimination.cc b/src/hydrogen-load-elimination.cc
index ea12df865d7b0d91a43eb6f7162374e538509afb..fbdcb2d35970522e04ecab5f258a31d373d7e00d 100644
--- a/src/hydrogen-load-elimination.cc
+++ b/src/hydrogen-load-elimination.cc
@@ -214,8 +214,8 @@ class HLoadEliminationTable : public ZoneObject {
   // the stored values are the same), return NULL indicating that this store
   // instruction is redundant. Otherwise, return {instr}.
   HValue* store(HStoreNamedField* instr) {
-    if (instr->store_mode() == PREINITIALIZING_STORE) {
-      TRACE(("  skipping preinitializing store\n"));
+    if (!instr->access().existing_inobject_property()) {
+      TRACE(("  skipping non existing property initialization store\n"));
       return instr;
     }