src/share/vm/opto/lcm.cpp

*** 135,144 ****
--- 135,146 ----
        // If the value being nul-checked is in another slot, it means we
        // are storing the checked value, which does NOT check the value!
        if( mach->in(2) != val ) continue;
        break;                    // Found a memory op?
      case Op_StrComp:
+     case Op_StrEquals:
+     case Op_StrIndexOf:
      case Op_AryEq:
        // Not a legit memory op for implicit null check regardless of
        // embedded loads
        continue;
      default:                    // Also check for embedded loads