src/share/vm/opto/loopTransform.cpp

*** 782,800 ****
        }
      }
    }
  
    int slp_max_unroll_factor = cl->slp_max_unroll();
    if (cl->has_passed_slp()) {
      if (slp_max_unroll_factor >= future_unroll_ct) return true;
      // Normal case: loop too big
      return false;
    }
  
    // Check for being too big
    if (body_size > (uint)_local_loop_unroll_limit) {
!     if (xors_in_loop >= 4 && body_size < (uint)LoopUnrollLimit*4) return true;
      // Normal case: loop too big
      return false;
    }
  
    if (cl->do_unroll_only()) {
--- 782,803 ----
        }
      }
    }
  
    int slp_max_unroll_factor = cl->slp_max_unroll();
+   if ((LoopMaxUnroll < slp_max_unroll_factor) && FLAG_IS_DEFAULT(LoopMaxUnroll) && UseSubwordForMaxVector) {
+     LoopMaxUnroll = slp_max_unroll_factor;
+   }
    if (cl->has_passed_slp()) {
      if (slp_max_unroll_factor >= future_unroll_ct) return true;
      // Normal case: loop too big
      return false;
    }
  
    // Check for being too big
    if (body_size > (uint)_local_loop_unroll_limit) {
!     if ((UseSubwordForMaxVector || xors_in_loop >= 4) && body_size < (uint)LoopUnrollLimit * 4) return true;
      // Normal case: loop too big
      return false;
    }
  
    if (cl->do_unroll_only()) {