1 /*
   2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package org.graalvm.compiler.hotspot.nodes.aot;
  24 
  25 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN;
  26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_16;
  27 
  28 import org.graalvm.compiler.debug.GraalError;
  29 import org.graalvm.compiler.graph.Node;
  30 import org.graalvm.compiler.graph.NodeClass;
  31 import org.graalvm.compiler.graph.spi.Canonicalizable;
  32 import org.graalvm.compiler.graph.spi.CanonicalizerTool;
  33 import org.graalvm.compiler.hotspot.HotSpotLIRGenerator;
  34 import org.graalvm.compiler.lir.LIRFrameState;
  35 import org.graalvm.compiler.nodeinfo.InputType;
  36 import org.graalvm.compiler.nodeinfo.NodeInfo;
  37 import org.graalvm.compiler.nodes.DeoptimizingNode;
  38 import org.graalvm.compiler.nodes.FrameState;
  39 import org.graalvm.compiler.nodes.ValueNode;
  40 import org.graalvm.compiler.nodes.spi.LIRLowerable;
  41 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
  42 import org.graalvm.compiler.nodes.util.GraphUtil;
  43 import org.graalvm.compiler.nodes.memory.AbstractMemoryCheckpoint;
  44 import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
  45 import org.graalvm.word.LocationIdentity;
  46 
  47 import jdk.vm.ci.meta.Constant;
  48 import jdk.vm.ci.meta.Value;
  49 
  50 /**
  51  * A call to the VM via a regular stub.
  52  */
  53 @NodeInfo(allowedUsageTypes = {InputType.Memory}, cycles = CYCLES_UNKNOWN, size = SIZE_16)
  54 public class ResolveDynamicStubCall extends AbstractMemoryCheckpoint implements LIRLowerable, Canonicalizable, DeoptimizingNode.DeoptBefore, MemoryCheckpoint.Single {
  55     public static final NodeClass<ResolveDynamicStubCall> TYPE = NodeClass.create(ResolveDynamicStubCall.class);
  56 
  57     @OptionalInput protected ValueNode value;
  58     @OptionalInput(InputType.State) protected FrameState stateBefore;
  59     protected Constant constant;
  60 
  61     public ResolveDynamicStubCall(ValueNode value) {
  62         super(TYPE, value.stamp());
  63         this.value = value;
  64     }
  65 
  66     @NodeIntrinsic
  67     public static native Object resolveInvoke(Object value);
  68 
  69     @Override
  70     public Node canonical(CanonicalizerTool tool) {
  71         if (value != null) {
  72             constant = GraphUtil.foldIfConstantAndRemove(this, value);
  73         }
  74         return this;
  75     }
  76 
  77     @Override
  78     public void generate(NodeLIRBuilderTool gen) {
  79         assert constant != null : "Expected the value to fold: " + value;
  80         Value result;
  81         LIRFrameState fs = gen.state(this);
  82         assert fs != null : "The stateAfter is null";
  83         result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitResolveDynamicInvoke(constant, fs);
  84         gen.setResult(this, result);
  85     }
  86 
  87     @Override
  88     public boolean canDeoptimize() {
  89         return true;
  90     }
  91 
  92     @Override
  93     public LocationIdentity getLocationIdentity() {
  94         return LocationIdentity.any();
  95     }
  96 
  97     @Override
  98     public FrameState stateBefore() {
  99         return stateBefore;
 100     }
 101 
 102     @Override
 103     public void setStateBefore(FrameState f) {
 104         updateUsages(stateBefore, f);
 105         stateBefore = f;
 106     }
 107 
 108     @Override
 109     public void markDeleted() {
 110         throw GraalError.shouldNotReachHere("ResolveDynamicStubCall node deleted");
 111     }
 112 
 113 }