Use stability to only conditionally flush information from the CheckMaps table.

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index 6e511d5cdf2c80ac427da0b06b23b13e0f3ecbd8..20612f49908249df8b9fe8a40f8036beaf86b05b 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -3105,7 +3105,7 @@ HCheckMaps* HCheckMaps::New(Zone* zone,
                             CompilationInfo* info,
                             HValue* typecheck) {
   HCheckMaps* check_map = new(zone) HCheckMaps(value, zone, typecheck);
-  check_map->Add(map, zone);
+  check_map->Add(map, info, zone);
   if (map->CanOmitMapChecks() &&
       value->IsConstant() &&
       HConstant::cast(value)->HasMap(map)) {