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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

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 *

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package org.graalvm.compiler.hotspot.test;

import org.graalvm.compiler.core.test.GraalCompilerTest;

import org.graalvm.compiler.java.BytecodeParserOptions;

import org.graalvm.compiler.nodes.StructuredGraph;

import org.graalvm.compiler.nodes.extended.ForeignCallNode;

import org.graalvm.compiler.nodes.java.MethodCallTargetNode;

import org.graalvm.compiler.nodes.memory.ReadNode;

import org.graalvm.compiler.options.OptionValues;

import org.junit.Test;

import jdk.vm.ci.meta.JavaTypeProfile;

import jdk.vm.ci.meta.JavaTypeProfile.ProfiledType;

import jdk.vm.ci.meta.MetaAccessProvider;

import jdk.vm.ci.meta.ResolvedJavaMethod;

import jdk.vm.ci.meta.TriState;

public class ObjectHashCodeInliningTest extends GraalCompilerTest {

    public static int getHash(Object obj) {

        return obj.hashCode();

    }

    @Test

    public void testGetHash() {

        MetaAccessProvider metaAccess = getMetaAccess();

        ProfiledType[] injectedProfile = {

                        new ProfiledType(metaAccess.lookupJavaType(String.class), 0.9D),

                        new ProfiledType(metaAccess.lookupJavaType(Object.class), 0.1D)};

        ResolvedJavaMethod method = getResolvedJavaMethod("getHash");

        StructuredGraph graph = parseForCompile(method,

                        new OptionValues(getInitialOptions(), BytecodeParserOptions.InlineDuringParsing, false, BytecodeParserOptions.InlineIntrinsicsDuringParsing, false));

        for (MethodCallTargetNode callTargetNode : graph.getNodes(MethodCallTargetNode.TYPE)) {

            if ("Object.hashCode".equals(callTargetNode.targetName())) {

                callTargetNode.setJavaTypeProfile(new JavaTypeProfile(TriState.FALSE, 0.0D, injectedProfile));

            }

        }

        compile(method, graph);

    }

    private static boolean containsForeignCallToIdentityHashCode(StructuredGraph graph) {

        for (ForeignCallNode foreignCallNode : graph.getNodes().filter(ForeignCallNode.class)) {

            if ("identity_hashcode".equals(foreignCallNode.getDescriptor().getName())) {

                return true;

            }

        }

        return false;

    }

    private static boolean containsReadStringHash(StructuredGraph graph) {

        for (ReadNode readNode : graph.getNodes().filter(ReadNode.class)) {

            if ("String.hash".equals(readNode.getLocationIdentity().toString())) {

                return true;

            }

        }

        return false;

    }

    @Override

    protected void checkHighTierGraph(StructuredGraph graph) {

        assert containsForeignCallToIdentityHashCode(graph) : "expected a foreign call to identity_hashcode";

        assert containsReadStringHash(graph) : "expected a read from String.hash";

    }

}