src/hotspot/share/gc/shenandoah/shenandoahThreadLocalData.hpp

*** 128,10 ***
--- 128,22 ---
      if (gc_state == FORWARDED_MARKING_WEAK) return POS_FORWARDED_MARKING_WEAK;
      ShouldNotReachHere();
      return 0;
    }
  
+   static char fast_array_index_to_gc_state(int index) {
+     if (index == POS_FORWARDED)              return FORWARDED;
+     if (index == POS_MARKING)                return MARKING;
+     if (index == POS_WEAK)                   return WEAK;
+     if (index == POS_FORWARDED_MARKING)      return FORWARDED_MARKING;
+     if (index == POS_FORWARDED_WEAK)         return FORWARDED_WEAK;
+     if (index == POS_MARKING_WEAK)           return MARKING_WEAK;
+     if (index == POS_FORWARDED_MARKING_WEAK) return FORWARDED_MARKING_WEAK;
+     ShouldNotReachHere();
+     return 0;
+   }
+ 
    static void set_gc_state(Thread* thread, char gc_state) {
      ShenandoahThreadLocalData* d = data(thread);
      d->_gc_state = gc_state;
      d->_gc_state_fast_array[POS_FORWARDED]              = (gc_state & FORWARDED) != 0;
      d->_gc_state_fast_array[POS_MARKING]                = (gc_state & MARKING) != 0;