57 
  58     /**
  59      * The indexes of the object pointer slots in the block. Each such object pointer slot must be
  60      * initialized before any safepoint in the method otherwise the garbage collector will see
  61      * garbage values when processing these slots.
  62      */
  63     protected final BitSet objects;
  64 
  65     public AllocaNode(@InjectedNodeParameter WordTypes wordTypes, int slots) {
  66         this(slots, wordTypes.getWordKind(), new BitSet());
  67     }
  68 
  69     public AllocaNode(int slots, JavaKind wordKind, BitSet objects) {
  70         super(TYPE, StampFactory.forKind(wordKind));
  71         this.slots = slots;
  72         this.objects = objects;
  73     }
  74 
  75     @Override
  76     public void generate(NodeLIRBuilderTool gen) {
  77         VirtualStackSlot array = gen.getLIRGeneratorTool().getResult().getFrameMapBuilder().allocateStackSlots(slots, objects, null);
  78         Value result = gen.getLIRGeneratorTool().emitAddress(array);
  79         gen.setResult(this, result);
  80     }
  81 
  82     @NodeIntrinsic
  83     public static native Word alloca(@ConstantNodeParameter int slots);
  84 }

  57 
  58     /**
  59      * The indexes of the object pointer slots in the block. Each such object pointer slot must be
  60      * initialized before any safepoint in the method otherwise the garbage collector will see
  61      * garbage values when processing these slots.
  62      */
  63     protected final BitSet objects;
  64 
  65     public AllocaNode(@InjectedNodeParameter WordTypes wordTypes, int slots) {
  66         this(slots, wordTypes.getWordKind(), new BitSet());
  67     }
  68 
  69     public AllocaNode(int slots, JavaKind wordKind, BitSet objects) {
  70         super(TYPE, StampFactory.forKind(wordKind));
  71         this.slots = slots;
  72         this.objects = objects;
  73     }
  74 
  75     @Override
  76     public void generate(NodeLIRBuilderTool gen) {
  77         VirtualStackSlot array = gen.getLIRGeneratorTool().allocateStackSlots(slots, objects, null);
  78         Value result = gen.getLIRGeneratorTool().emitAddress(array);
  79         gen.setResult(this, result);
  80     }
  81 
  82     @NodeIntrinsic
  83     public static native Word alloca(@ConstantNodeParameter int slots);
  84 }