1 /*
   2  * Copyright (c) 2013, 2015, 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 
  24 
  25 package org.graalvm.compiler.replacements.amd64;
  26 
  27 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_512;
  28 
  29 import org.graalvm.compiler.core.common.type.StampFactory;
  30 import org.graalvm.compiler.graph.NodeClass;
  31 import org.graalvm.compiler.nodeinfo.InputType;
  32 import org.graalvm.compiler.nodeinfo.NodeCycles;
  33 import org.graalvm.compiler.nodeinfo.NodeInfo;
  34 import org.graalvm.compiler.nodes.FixedWithNextNode;
  35 import org.graalvm.compiler.nodes.NamedLocationIdentity;
  36 import org.graalvm.compiler.nodes.ValueNode;
  37 import org.graalvm.compiler.nodes.ValueNodeUtil;
  38 import org.graalvm.compiler.nodes.memory.MemoryAccess;
  39 import org.graalvm.compiler.nodes.memory.MemoryNode;
  40 import org.graalvm.compiler.nodes.spi.LIRLowerable;
  41 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
  42 import jdk.internal.vm.compiler.word.LocationIdentity;
  43 import jdk.internal.vm.compiler.word.Pointer;
  44 
  45 import jdk.vm.ci.meta.JavaKind;
  46 import jdk.vm.ci.meta.Value;
  47 
  48 @NodeInfo(size = SIZE_512, cycles = NodeCycles.CYCLES_UNKNOWN)
  49 public class AMD64ArrayIndexOfNode extends FixedWithNextNode implements LIRLowerable, MemoryAccess {
  50 
  51     public static final NodeClass<AMD64ArrayIndexOfNode> TYPE = NodeClass.create(AMD64ArrayIndexOfNode.class);
  52 
  53     private final JavaKind kind;
  54 
  55     @Input private ValueNode arrayPointer;
  56     @Input private ValueNode arrayLength;
  57     @Input private ValueNode searchValue;
  58 
  59     @OptionalInput(InputType.Memory) private MemoryNode lastLocationAccess;
  60 
  61     public AMD64ArrayIndexOfNode(ValueNode arrayPointer, ValueNode arrayLength, ValueNode searchValue, @ConstantNodeParameter JavaKind kind) {
  62         super(TYPE, StampFactory.forKind(JavaKind.Int));
  63         this.kind = kind;
  64         this.arrayPointer = arrayPointer;
  65         this.arrayLength = arrayLength;
  66         this.searchValue = searchValue;
  67     }
  68 
  69     @Override
  70     public LocationIdentity getLocationIdentity() {
  71         return NamedLocationIdentity.getArrayLocation(kind);
  72     }
  73 
  74     @Override
  75     public void generate(NodeLIRBuilderTool gen) {
  76         Value result = gen.getLIRGeneratorTool().emitArrayIndexOf(kind, gen.operand(arrayPointer), gen.operand(arrayLength), gen.operand(searchValue));
  77         gen.setResult(this, result);
  78     }
  79 
  80     @Override
  81     public MemoryNode getLastLocationAccess() {
  82         return lastLocationAccess;
  83     }
  84 
  85     @Override
  86     public void setLastLocationAccess(MemoryNode lla) {
  87         updateUsages(ValueNodeUtil.asNode(lastLocationAccess), ValueNodeUtil.asNode(lla));
  88         lastLocationAccess = lla;
  89     }
  90 
  91     @NodeIntrinsic
  92     public static native int optimizedArrayIndexOf(Pointer arrayPointer, int arrayLength, char searchValue, @ConstantNodeParameter JavaKind kind);
  93 }