Do not remove write barriers for stores of old space references in most recent...

Do not remove write barriers for stores of old space references in most recent old space allocation.

BUG=chromium:561449
LOG=n

Review URL: https://codereview.chromium.org/1478113002

Cr-Commit-Position: refs/heads/master@{#32368}

src/crankshaft/hydrogen-instructions.h

@@ -5692,15 +5692,6 @@ inline bool ReceiverObjectNeedsWriteBarrier(HValue* object,
     if (value->IsConstant() && HConstant::cast(value)->NotInNewSpace()) {
       return false;
     }
-    // Stores to old space allocations require no write barriers if the value is
-    // an old space allocation.
-    while (value->IsInnerAllocatedObject()) {
-      value = HInnerAllocatedObject::cast(value)->base_object();
-    }
-    if (value->IsAllocate() &&
-        !HAllocate::cast(value)->IsNewSpaceAllocation()) {
-      return false;
-    }
   }
   return true;
 }