1 /*
   2  * Copyright (c) 2014, 2016, 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;
  24 
  25 import static org.graalvm.compiler.hotspot.HotSpotBackend.FETCH_UNROLL_INFO;
  26 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN;
  27 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_UNKNOWN;
  28 
  29 import org.graalvm.compiler.core.common.LocationIdentity;
  30 import org.graalvm.compiler.core.common.spi.ForeignCallsProvider;
  31 import org.graalvm.compiler.core.common.type.StampFactory;
  32 import org.graalvm.compiler.graph.NodeClass;
  33 import org.graalvm.compiler.hotspot.HotSpotLIRGenerator;
  34 import org.graalvm.compiler.lir.StandardOp.SaveRegistersOp;
  35 import org.graalvm.compiler.nodeinfo.InputType;
  36 import org.graalvm.compiler.nodeinfo.NodeInfo;
  37 import org.graalvm.compiler.nodes.FixedWithNextNode;
  38 import org.graalvm.compiler.nodes.ValueNode;
  39 import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
  40 import org.graalvm.compiler.nodes.spi.LIRLowerable;
  41 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
  42 import org.graalvm.compiler.word.Word;
  43 
  44 import jdk.vm.ci.meta.JavaKind;
  45 import jdk.vm.ci.meta.Value;
  46 
  47 /**
  48  * A call to the runtime code {@code Deoptimization::fetch_unroll_info}.
  49  */
  50 @NodeInfo(allowedUsageTypes = {InputType.Memory}, cycles = CYCLES_UNKNOWN, size = SIZE_UNKNOWN)
  51 public final class DeoptimizationFetchUnrollInfoCallNode extends FixedWithNextNode implements LIRLowerable, MemoryCheckpoint.Single {
  52 
  53     public static final NodeClass<DeoptimizationFetchUnrollInfoCallNode> TYPE = NodeClass.create(DeoptimizationFetchUnrollInfoCallNode.class);
  54     @Input SaveAllRegistersNode registerSaver;
  55     @Input ValueNode mode;
  56     protected final ForeignCallsProvider foreignCalls;
  57 
  58     public DeoptimizationFetchUnrollInfoCallNode(@InjectedNodeParameter ForeignCallsProvider foreignCalls, ValueNode registerSaver, ValueNode mode) {
  59         super(TYPE, StampFactory.forKind(JavaKind.fromJavaClass(FETCH_UNROLL_INFO.getResultType())));
  60         this.registerSaver = (SaveAllRegistersNode) registerSaver;
  61         this.mode = mode;
  62         this.foreignCalls = foreignCalls;
  63     }
  64 
  65     @Override
  66     public LocationIdentity getLocationIdentity() {
  67         return LocationIdentity.any();
  68     }
  69 
  70     public SaveRegistersOp getSaveRegistersOp() {
  71         return registerSaver.getSaveRegistersOp();
  72     }
  73 
  74     /**
  75      * Returns the node representing the exec_mode/unpack_kind used during this fetch_unroll_info
  76      * call.
  77      */
  78     public ValueNode getMode() {
  79         return mode;
  80     }
  81 
  82     @Override
  83     public void generate(NodeLIRBuilderTool gen) {
  84         Value result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitDeoptimizationFetchUnrollInfoCall(gen.operand(getMode()), getSaveRegistersOp());
  85         gen.setResult(this, result);
  86     }
  87 
  88     @NodeIntrinsic
  89     public static native Word fetchUnrollInfo(long registerSaver, int mode);
  90 }