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11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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13  * accompanied this code).
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23 
24 
25 package org.graalvm.compiler.replacements.amd64;
26 
27 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_64;
28 
29 import org.graalvm.compiler.core.common.type.StampFactory;
30 import org.graalvm.compiler.graph.NodeClass;
31 import org.graalvm.compiler.graph.NodeInputList;
32 import org.graalvm.compiler.nodeinfo.InputType;
33 import org.graalvm.compiler.nodeinfo.NodeCycles;
34 import org.graalvm.compiler.nodeinfo.NodeInfo;
35 import org.graalvm.compiler.nodes.FixedWithNextNode;
36 import org.graalvm.compiler.nodes.NamedLocationIdentity;
37 import org.graalvm.compiler.nodes.ValueNode;
38 import org.graalvm.compiler.nodes.ValueNodeUtil;
39 import org.graalvm.compiler.nodes.memory.MemoryAccess;
40 import org.graalvm.compiler.nodes.memory.MemoryNode;
41 import org.graalvm.compiler.nodes.spi.LIRLowerable;
42 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
43 import jdk.internal.vm.compiler.word.LocationIdentity;
44 import jdk.internal.vm.compiler.word.Pointer;
45 
46 import jdk.vm.ci.meta.JavaKind;
47 import jdk.vm.ci.meta.Value;
48 
49 @NodeInfo(size = SIZE_64, cycles = NodeCycles.CYCLES_UNKNOWN)
50 public class AMD64StringIndexOfNode extends FixedWithNextNode implements LIRLowerable, MemoryAccess {
51     public static final NodeClass<AMD64StringIndexOfNode> TYPE = NodeClass.create(AMD64StringIndexOfNode.class);
52 
53     @OptionalInput(InputType.Memory) protected MemoryNode lastLocationAccess;
54 
55     @Input protected NodeInputList<ValueNode> arguments;
56 
AMD64StringIndexOfNode(ValueNode sourcePointer, ValueNode sourceCount, ValueNode targetPointer, ValueNode targetCount)57     public AMD64StringIndexOfNode(ValueNode sourcePointer, ValueNode sourceCount, ValueNode targetPointer, ValueNode targetCount) {
58         super(TYPE, StampFactory.forInteger(32));
59         this.arguments = new NodeInputList<>(this, new ValueNode[]{sourcePointer, sourceCount, targetPointer, targetCount});
60     }
61 
62     @Override
getLocationIdentity()63     public LocationIdentity getLocationIdentity() {
64         return NamedLocationIdentity.getArrayLocation(JavaKind.Char);
65     }
66 
sourcePointer()67     ValueNode sourcePointer() {
68         return arguments.get(0);
69     }
70 
sourceCount()71     ValueNode sourceCount() {
72         return arguments.get(1);
73     }
74 
targetPointer()75     ValueNode targetPointer() {
76         return arguments.get(2);
77     }
78 
targetCount()79     ValueNode targetCount() {
80         return arguments.get(3);
81     }
82 
83     @Override
generate(NodeLIRBuilderTool gen)84     public void generate(NodeLIRBuilderTool gen) {
85         int constantTargetCount = -1;
86         if (targetCount().isConstant()) {
87             constantTargetCount = targetCount().asJavaConstant().asInt();
88         }
89         Value result = gen.getLIRGeneratorTool().emitStringIndexOf(gen.operand(sourcePointer()), gen.operand(sourceCount()), gen.operand(targetPointer()), gen.operand(targetCount()),
90                         constantTargetCount);
91         gen.setResult(this, result);
92     }
93 
94     @Override
getLastLocationAccess()95     public MemoryNode getLastLocationAccess() {
96         return lastLocationAccess;
97     }
98 
99     @Override
setLastLocationAccess(MemoryNode lla)100     public void setLastLocationAccess(MemoryNode lla) {
101         updateUsages(ValueNodeUtil.asNode(lastLocationAccess), ValueNodeUtil.asNode(lla));
102         lastLocationAccess = lla;
103     }
104 
105     @NodeIntrinsic
optimizedStringIndexPointer(Pointer sourcePointer, int sourceCount, Pointer targetPointer, int targetCount)106     public static native int optimizedStringIndexPointer(Pointer sourcePointer, int sourceCount, Pointer targetPointer, int targetCount);
107 }
108