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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * 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
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package org.graalvm.compiler.replacements.test;

import static org.graalvm.compiler.nodes.graphbuilderconf.InlineInvokePlugin.InlineInfo.createStandardInlineInfo;

import jdk.internal.vm.compiler.collections.EconomicMap;
import org.graalvm.compiler.core.common.type.StampFactory;
import org.graalvm.compiler.core.test.GraalCompilerTest;
import org.graalvm.compiler.debug.DebugContext;
import org.graalvm.compiler.nodes.AbstractBeginNode;
import org.graalvm.compiler.nodes.StructuredGraph;
import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderConfiguration;
import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext;
import org.graalvm.compiler.nodes.graphbuilderconf.InlineInvokePlugin;
import org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugin;
import org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugins;
import org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugins.Registration;
import org.graalvm.compiler.nodes.memory.OnHeapMemoryAccess.BarrierType;
import org.graalvm.compiler.nodes.memory.ReadNode;
import org.graalvm.compiler.nodes.memory.address.AddressNode;
import org.graalvm.compiler.nodes.memory.address.OffsetAddressNode;
import org.graalvm.compiler.nodes.spi.CoreProviders;
import org.graalvm.compiler.phases.OptimisticOptimizations;
import org.graalvm.compiler.replacements.CachingPEGraphDecoder;
import jdk.internal.vm.compiler.word.LocationIdentity;
import org.junit.Test;

import jdk.vm.ci.meta.JavaKind;
import jdk.vm.ci.meta.ResolvedJavaMethod;

public class PEGraphDecoderTest extends GraalCompilerTest {

    
This method is intrinsified to a node with a guard dependency on the block it is in. The various tests ensure that this guard is correctly updated when blocks are merged during inlining.
/** * This method is intrinsified to a node with a guard dependency on the block it is in. The * various tests ensure that this guard is correctly updated when blocks are merged during * inlining. */
private static native int readInt(Object obj, long offset); private static boolean flag; private static int value; private static void invokeSimple() { value = 111; } private static void invokeComplicated() { if (flag) { value = 0; } else { value = 42; } } private static int readInt1(Object obj) { return readInt(obj, 16); } private static int readInt2(Object obj) { invokeSimple(); return readInt(obj, 16); } private static int readInt3(Object obj) { invokeComplicated(); return readInt(obj, 16); } private static int readInt4(Object obj, int n) { if (n > 0) { invokeComplicated(); } return readInt(obj, 16); } public static int doTest(Object obj) { int result = 0; result += readInt1(obj); result += readInt2(obj); result += readInt3(obj); result += readInt4(obj, 2); return result; } private static void registerPlugins(InvocationPlugins plugins) { Registration r = new Registration(plugins, PEGraphDecoderTest.class); r.register2("readInt", Object.class, long.class, new InvocationPlugin() { @Override public boolean apply(GraphBuilderContext b, ResolvedJavaMethod targetMethod, Receiver unused, ValueNode obj, ValueNode offset) { AddressNode address = b.add(new OffsetAddressNode(obj, offset)); ReadNode read = b.addPush(JavaKind.Int, new ReadNode(address, LocationIdentity.any(), StampFactory.forKind(JavaKind.Int), BarrierType.NONE)); read.setGuard(AbstractBeginNode.prevBegin(read)); return true; } }); } class InlineAll implements InlineInvokePlugin { @Override public InlineInfo shouldInlineInvoke(GraphBuilderContext b, ResolvedJavaMethod method, ValueNode[] args) { return createStandardInlineInfo(method); } } @Test @SuppressWarnings("try") public void test() { ResolvedJavaMethod testMethod = getResolvedJavaMethod(PEGraphDecoderTest.class, "doTest", Object.class); StructuredGraph targetGraph = null; DebugContext debug = getDebugContext(); try (DebugContext.Scope scope = debug.scope("GraphPETest", testMethod)) { GraphBuilderConfiguration graphBuilderConfig = GraphBuilderConfiguration.getDefault(getDefaultGraphBuilderPlugins()).withEagerResolving(true).withUnresolvedIsError(true); registerPlugins(graphBuilderConfig.getPlugins().getInvocationPlugins()); targetGraph = new StructuredGraph.Builder(getInitialOptions(), debug, AllowAssumptions.YES).method(testMethod).build(); CachingPEGraphDecoder decoder = new CachingPEGraphDecoder(getTarget().arch, targetGraph, getProviders(), graphBuilderConfig, OptimisticOptimizations.NONE, AllowAssumptions.YES, null, null, new InlineInvokePlugin[]{new InlineAll()}, null, null, null, null, null, EconomicMap.create()); decoder.decode(testMethod, false, false); debug.dump(DebugContext.BASIC_LEVEL, targetGraph, "Target Graph"); targetGraph.verify(); CoreProviders context = getProviders(); createCanonicalizerPhase().apply(targetGraph, context); targetGraph.verify(); } catch (Throwable ex) { if (targetGraph != null) { debug.dump(DebugContext.BASIC_LEVEL, targetGraph, ex.toString()); } debug.handle(ex); } } }