--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/GraalCompilerTest.java Thu Feb 16 15:46:09 2017 -0800
@@ -0,0 +1,1189 @@
+/*
+ * Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved.
+ * 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.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.graalvm.compiler.core.test;
+
+import static org.graalvm.compiler.core.GraalCompilerOptions.PrintCompilation;
+import static org.graalvm.compiler.nodes.ConstantNode.getConstantNodes;
+import static org.graalvm.compiler.nodes.graphbuilderconf.InlineInvokePlugin.InlineInfo.DO_NOT_INLINE_NO_EXCEPTION;
+import static org.graalvm.compiler.nodes.graphbuilderconf.InlineInvokePlugin.InlineInfo.DO_NOT_INLINE_WITH_EXCEPTION;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.EnumMap;
+import java.util.HashMap;
+import java.util.List;
+import java.util.ListIterator;
+import java.util.Map;
+import java.util.Set;
+import java.util.function.Supplier;
+
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.internal.AssumptionViolatedException;
+
+import org.graalvm.compiler.api.directives.GraalDirectives;
+import org.graalvm.compiler.api.replacements.SnippetReflectionProvider;
+import org.graalvm.compiler.api.test.Graal;
+import org.graalvm.compiler.code.CompilationResult;
+import org.graalvm.compiler.core.GraalCompiler;
+import org.graalvm.compiler.core.GraalCompiler.Request;
+import org.graalvm.compiler.core.common.CompilationIdentifier;
+import org.graalvm.compiler.core.common.type.StampFactory;
+import org.graalvm.compiler.core.target.Backend;
+import org.graalvm.compiler.debug.Debug;
+import org.graalvm.compiler.debug.Debug.Scope;
+import org.graalvm.compiler.debug.DebugDumpScope;
+import org.graalvm.compiler.debug.GraalError;
+import org.graalvm.compiler.debug.TTY;
+import org.graalvm.compiler.graph.Node;
+import org.graalvm.compiler.graph.NodeClass;
+import org.graalvm.compiler.graph.NodeMap;
+import org.graalvm.compiler.java.BytecodeParser;
+import org.graalvm.compiler.java.ComputeLoopFrequenciesClosure;
+import org.graalvm.compiler.java.GraphBuilderPhase;
+import org.graalvm.compiler.lir.asm.CompilationResultBuilderFactory;
+import org.graalvm.compiler.lir.phases.LIRSuites;
+import org.graalvm.compiler.nodeinfo.NodeInfo;
+import org.graalvm.compiler.nodeinfo.NodeSize;
+import org.graalvm.compiler.nodeinfo.Verbosity;
+import org.graalvm.compiler.nodes.BreakpointNode;
+import org.graalvm.compiler.nodes.ConstantNode;
+import org.graalvm.compiler.nodes.FixedWithNextNode;
+import org.graalvm.compiler.nodes.FrameState;
+import org.graalvm.compiler.nodes.FullInfopointNode;
+import org.graalvm.compiler.nodes.InvokeNode;
+import org.graalvm.compiler.nodes.InvokeWithExceptionNode;
+import org.graalvm.compiler.nodes.ProxyNode;
+import org.graalvm.compiler.nodes.ReturnNode;
+import org.graalvm.compiler.nodes.StructuredGraph;
+import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;
+import org.graalvm.compiler.nodes.StructuredGraph.ScheduleResult;
+import org.graalvm.compiler.nodes.ValueNode;
+import org.graalvm.compiler.nodes.cfg.Block;
+import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderConfiguration;
+import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderConfiguration.Plugins;
+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.spi.LoweringProvider;
+import org.graalvm.compiler.nodes.spi.Replacements;
+import org.graalvm.compiler.nodes.virtual.VirtualObjectNode;
+import org.graalvm.compiler.options.DerivedOptionValue;
+import org.graalvm.compiler.phases.BasePhase;
+import org.graalvm.compiler.phases.OptimisticOptimizations;
+import org.graalvm.compiler.phases.Phase;
+import org.graalvm.compiler.phases.PhaseSuite;
+import org.graalvm.compiler.phases.common.CanonicalizerPhase;
+import org.graalvm.compiler.phases.common.ConvertDeoptimizeToGuardPhase;
+import org.graalvm.compiler.phases.schedule.SchedulePhase;
+import org.graalvm.compiler.phases.schedule.SchedulePhase.SchedulingStrategy;
+import org.graalvm.compiler.phases.tiers.HighTierContext;
+import org.graalvm.compiler.phases.tiers.Suites;
+import org.graalvm.compiler.phases.tiers.TargetProvider;
+import org.graalvm.compiler.phases.util.Providers;
+import org.graalvm.compiler.runtime.RuntimeProvider;
+import org.graalvm.compiler.test.GraalTest;
+
+import jdk.vm.ci.code.Architecture;
+import jdk.vm.ci.code.CodeCacheProvider;
+import jdk.vm.ci.code.InstalledCode;
+import jdk.vm.ci.code.TargetDescription;
+import jdk.vm.ci.meta.ConstantReflectionProvider;
+import jdk.vm.ci.meta.DeoptimizationReason;
+import jdk.vm.ci.meta.JavaKind;
+import jdk.vm.ci.meta.JavaType;
+import jdk.vm.ci.meta.MetaAccessProvider;
+import jdk.vm.ci.meta.ProfilingInfo;
+import jdk.vm.ci.meta.ResolvedJavaMethod;
+import jdk.vm.ci.meta.ResolvedJavaType;
+import jdk.vm.ci.meta.SpeculationLog;
+
+/**
+ * Base class for Graal compiler unit tests.
+ * <p>
+ * White box tests for Graal compiler transformations use this pattern:
+ * <ol>
+ * <li>Create a graph by {@linkplain #parseEager(String, AllowAssumptions) parsing} a method.</li>
+ * <li>Manually modify the graph (e.g. replace a parameter node with a constant).</li>
+ * <li>Apply a transformation to the graph.</li>
+ * <li>Assert that the transformed graph is equal to an expected graph.</li>
+ * </ol>
+ * <p>
+ * See {@link InvokeHintsTest} as an example of a white box test.
+ * <p>
+ * Black box tests use the {@link #test(String, Object...)} or
+ * {@link #testN(int, String, Object...)} to execute some method in the interpreter and compare its
+ * result against that produced by a Graal compiled version of the method.
+ * <p>
+ * These tests will be run by the {@code mx unittest} command.
+ */
+public abstract class GraalCompilerTest extends GraalTest {
+
+ private final Providers providers;
+ private final Backend backend;
+ private final DerivedOptionValue<Suites> suites;
+ private final DerivedOptionValue<LIRSuites> lirSuites;
+
+ /**
+ * Denotes a test method that must be inlined by the {@link BytecodeParser}.
+ */
+ @Target({ElementType.METHOD, ElementType.CONSTRUCTOR})
+ @Retention(RetentionPolicy.RUNTIME)
+ public @interface BytecodeParserForceInline {
+ }
+
+ /**
+ * Denotes a test method that must never be inlined by the {@link BytecodeParser}.
+ */
+ @Retention(RetentionPolicy.RUNTIME)
+ @Target({ElementType.METHOD, ElementType.CONSTRUCTOR})
+ public @interface BytecodeParserNeverInline {
+ /**
+ * Specifies if the call should be implemented with {@link InvokeWithExceptionNode} instead
+ * of {@link InvokeNode}.
+ */
+ boolean invokeWithException() default false;
+ }
+
+ /**
+ * Can be overridden by unit tests to verify properties of the graph.
+ *
+ * @param graph the graph at the end of HighTier
+ */
+ protected boolean checkHighTierGraph(StructuredGraph graph) {
+ return true;
+ }
+
+ /**
+ * Can be overridden by unit tests to verify properties of the graph.
+ *
+ * @param graph the graph at the end of MidTier
+ */
+ protected boolean checkMidTierGraph(StructuredGraph graph) {
+ return true;
+ }
+
+ /**
+ * Can be overridden by unit tests to verify properties of the graph.
+ *
+ * @param graph the graph at the end of LowTier
+ */
+ protected boolean checkLowTierGraph(StructuredGraph graph) {
+ return true;
+ }
+
+ protected static void breakpoint() {
+ }
+
+ @SuppressWarnings("unused")
+ protected static void breakpoint(int arg0) {
+ }
+
+ protected static void shouldBeOptimizedAway() {
+ }
+
+ protected Suites createSuites() {
+ Suites ret = backend.getSuites().getDefaultSuites().copy();
+ ListIterator<BasePhase<? super HighTierContext>> iter = ret.getHighTier().findPhase(ConvertDeoptimizeToGuardPhase.class, true);
+ if (iter == null) {
+ /*
+ * in the economy configuration, we don't have the ConvertDeoptimizeToGuard phase, so we
+ * just select the first CanonicalizerPhase in HighTier
+ */
+ iter = ret.getHighTier().findPhase(CanonicalizerPhase.class);
+ }
+ iter.add(new Phase() {
+
+ @Override
+ protected void run(StructuredGraph graph) {
+ ComputeLoopFrequenciesClosure.compute(graph);
+ }
+
+ @Override
+ public float codeSizeIncrease() {
+ return NodeSize.IGNORE_SIZE_CONTRACT_FACTOR;
+ }
+
+ @Override
+ protected CharSequence getName() {
+ return "ComputeLoopFrequenciesPhase";
+ }
+ });
+ ret.getHighTier().appendPhase(new Phase() {
+
+ @Override
+ protected void run(StructuredGraph graph) {
+ assert checkHighTierGraph(graph) : "failed HighTier graph check";
+ }
+
+ @Override
+ public float codeSizeIncrease() {
+ return NodeSize.IGNORE_SIZE_CONTRACT_FACTOR;
+ }
+
+ @Override
+ protected CharSequence getName() {
+ return "CheckGraphPhase";
+ }
+ });
+ ret.getMidTier().appendPhase(new Phase() {
+
+ @Override
+ protected void run(StructuredGraph graph) {
+ assert checkMidTierGraph(graph) : "failed MidTier graph check";
+ }
+
+ @Override
+ public float codeSizeIncrease() {
+ return NodeSize.IGNORE_SIZE_CONTRACT_FACTOR;
+ }
+
+ @Override
+ protected CharSequence getName() {
+ return "CheckGraphPhase";
+ }
+ });
+ ret.getLowTier().appendPhase(new Phase() {
+
+ @Override
+ protected void run(StructuredGraph graph) {
+ assert checkLowTierGraph(graph) : "failed LowTier graph check";
+ }
+
+ @Override
+ public float codeSizeIncrease() {
+ return NodeSize.IGNORE_SIZE_CONTRACT_FACTOR;
+ }
+
+ @Override
+ protected CharSequence getName() {
+ return "CheckGraphPhase";
+ }
+ });
+ return ret;
+ }
+
+ protected LIRSuites createLIRSuites() {
+ LIRSuites ret = backend.getSuites().getDefaultLIRSuites().copy();
+ return ret;
+ }
+
+ public GraalCompilerTest() {
+ this.backend = Graal.getRequiredCapability(RuntimeProvider.class).getHostBackend();
+ this.providers = getBackend().getProviders();
+ this.suites = new DerivedOptionValue<>(this::createSuites);
+ this.lirSuites = new DerivedOptionValue<>(this::createLIRSuites);
+ }
+
+ /**
+ * Set up a test for a non-default backend. The test should check (via {@link #getBackend()} )
+ * whether the desired backend is available.
+ *
+ * @param arch the name of the desired backend architecture
+ */
+ public GraalCompilerTest(Class<? extends Architecture> arch) {
+ RuntimeProvider runtime = Graal.getRequiredCapability(RuntimeProvider.class);
+ Backend b = runtime.getBackend(arch);
+ if (b != null) {
+ this.backend = b;
+ } else {
+ // Fall back to the default/host backend
+ this.backend = runtime.getHostBackend();
+ }
+ this.providers = backend.getProviders();
+ this.suites = new DerivedOptionValue<>(this::createSuites);
+ this.lirSuites = new DerivedOptionValue<>(this::createLIRSuites);
+ }
+
+ /**
+ * Set up a test for a non-default backend.
+ *
+ * @param backend the desired backend
+ */
+ public GraalCompilerTest(Backend backend) {
+ this.backend = backend;
+ this.providers = backend.getProviders();
+ this.suites = new DerivedOptionValue<>(this::createSuites);
+ this.lirSuites = new DerivedOptionValue<>(this::createLIRSuites);
+ }
+
+ private Scope debugScope;
+
+ @Before
+ public void beforeTest() {
+ assert debugScope == null;
+ debugScope = Debug.scope(getClass());
+ }
+
+ @After
+ public void afterTest() {
+ if (debugScope != null) {
+ debugScope.close();
+ }
+ debugScope = null;
+ }
+
+ protected void assertEquals(StructuredGraph expected, StructuredGraph graph) {
+ assertEquals(expected, graph, false, true);
+ }
+
+ protected int countUnusedConstants(StructuredGraph graph) {
+ int total = 0;
+ for (ConstantNode node : getConstantNodes(graph)) {
+ if (node.hasNoUsages()) {
+ total++;
+ }
+ }
+ return total;
+ }
+
+ protected int getNodeCountExcludingUnusedConstants(StructuredGraph graph) {
+ return graph.getNodeCount() - countUnusedConstants(graph);
+ }
+
+ protected void assertEquals(StructuredGraph expected, StructuredGraph graph, boolean excludeVirtual, boolean checkConstants) {
+ String expectedString = getCanonicalGraphString(expected, excludeVirtual, checkConstants);
+ String actualString = getCanonicalGraphString(graph, excludeVirtual, checkConstants);
+ String mismatchString = compareGraphStrings(expected, expectedString, graph, actualString);
+
+ if (!excludeVirtual && getNodeCountExcludingUnusedConstants(expected) != getNodeCountExcludingUnusedConstants(graph)) {
+ Debug.dump(Debug.BASIC_LOG_LEVEL, expected, "Node count not matching - expected");
+ Debug.dump(Debug.BASIC_LOG_LEVEL, graph, "Node count not matching - actual");
+ Assert.fail("Graphs do not have the same number of nodes: " + expected.getNodeCount() + " vs. " + graph.getNodeCount() + "\n" + mismatchString);
+ }
+ if (!expectedString.equals(actualString)) {
+ Debug.dump(Debug.BASIC_LOG_LEVEL, expected, "mismatching graphs - expected");
+ Debug.dump(Debug.BASIC_LOG_LEVEL, graph, "mismatching graphs - actual");
+ Assert.fail(mismatchString);
+ }
+ }
+
+ private static String compareGraphStrings(StructuredGraph expectedGraph, String expectedString, StructuredGraph actualGraph, String actualString) {
+ if (!expectedString.equals(actualString)) {
+ String[] expectedLines = expectedString.split("\n");
+ String[] actualLines = actualString.split("\n");
+ int diffIndex = -1;
+ int limit = Math.min(actualLines.length, expectedLines.length);
+ String marker = " <<<";
+ for (int i = 0; i < limit; i++) {
+ if (!expectedLines[i].equals(actualLines[i])) {
+ diffIndex = i;
+ break;
+ }
+ }
+ if (diffIndex == -1) {
+ // Prefix is the same so add some space after the prefix
+ diffIndex = limit;
+ if (actualLines.length == limit) {
+ actualLines = Arrays.copyOf(actualLines, limit + 1);
+ actualLines[diffIndex] = "";
+ } else {
+ assert expectedLines.length == limit;
+ expectedLines = Arrays.copyOf(expectedLines, limit + 1);
+ expectedLines[diffIndex] = "";
+ }
+ }
+ // Place a marker next to the first line that differs
+ expectedLines[diffIndex] = expectedLines[diffIndex] + marker;
+ actualLines[diffIndex] = actualLines[diffIndex] + marker;
+ String ediff = String.join("\n", expectedLines);
+ String adiff = String.join("\n", actualLines);
+ return "mismatch in graphs:\n========= expected (" + expectedGraph + ") =========\n" + ediff + "\n\n========= actual (" + actualGraph + ") =========\n" + adiff;
+ } else {
+ return "mismatch in graphs";
+ }
+ }
+
+ protected void assertOptimizedAway(StructuredGraph g) {
+ Assert.assertEquals(0, g.getNodes().filter(NotOptimizedNode.class).count());
+ }
+
+ protected void assertConstantReturn(StructuredGraph graph, int value) {
+ String graphString = getCanonicalGraphString(graph, false, true);
+ Assert.assertEquals("unexpected number of ReturnNodes: " + graphString, graph.getNodes(ReturnNode.TYPE).count(), 1);
+ ValueNode result = graph.getNodes(ReturnNode.TYPE).first().result();
+ Assert.assertTrue("unexpected ReturnNode result node: " + graphString, result.isConstant());
+ Assert.assertEquals("unexpected ReturnNode result kind: " + graphString, result.asJavaConstant().getJavaKind(), JavaKind.Int);
+ Assert.assertEquals("unexpected ReturnNode result: " + graphString, result.asJavaConstant().asInt(), value);
+ }
+
+ protected static String getCanonicalGraphString(StructuredGraph graph, boolean excludeVirtual, boolean checkConstants) {
+ SchedulePhase schedule = new SchedulePhase(SchedulingStrategy.EARLIEST);
+ schedule.apply(graph);
+ ScheduleResult scheduleResult = graph.getLastSchedule();
+
+ NodeMap<Integer> canonicalId = graph.createNodeMap();
+ int nextId = 0;
+
+ List<String> constantsLines = new ArrayList<>();
+
+ StringBuilder result = new StringBuilder();
+ for (Block block : scheduleResult.getCFG().getBlocks()) {
+ result.append("Block " + block + " ");
+ if (block == scheduleResult.getCFG().getStartBlock()) {
+ result.append("* ");
+ }
+ result.append("-> ");
+ for (Block succ : block.getSuccessors()) {
+ result.append(succ + " ");
+ }
+ result.append("\n");
+ for (Node node : scheduleResult.getBlockToNodesMap().get(block)) {
+ if (node instanceof ValueNode && node.isAlive()) {
+ if (!excludeVirtual || !(node instanceof VirtualObjectNode || node instanceof ProxyNode || node instanceof FullInfopointNode)) {
+ if (node instanceof ConstantNode) {
+ String name = checkConstants ? node.toString(Verbosity.Name) : node.getClass().getSimpleName();
+ String str = name + (excludeVirtual ? "\n" : " (" + filteredUsageCount(node) + ")\n");
+ constantsLines.add(str);
+ } else {
+ int id;
+ if (canonicalId.get(node) != null) {
+ id = canonicalId.get(node);
+ } else {
+ id = nextId++;
+ canonicalId.set(node, id);
+ }
+ String name = node.getClass().getSimpleName();
+ String str = " " + id + "|" + name + (excludeVirtual ? "\n" : " (" + filteredUsageCount(node) + ")\n");
+ result.append(str);
+ }
+ }
+ }
+ }
+ }
+
+ StringBuilder constantsLinesResult = new StringBuilder();
+ constantsLinesResult.append(constantsLines.size() + " constants:\n");
+ Collections.sort(constantsLines);
+ for (String s : constantsLines) {
+ constantsLinesResult.append(s);
+ constantsLinesResult.append("\n");
+ }
+
+ return constantsLines.toString() + result.toString();
+ }
+
+ /**
+ * @return usage count excluding {@link FrameState} usages
+ */
+ private static int filteredUsageCount(Node node) {
+ return node.usages().filter(n -> !(n instanceof FrameState)).count();
+ }
+
+ /**
+ * @param graph
+ * @return a scheduled textual dump of {@code graph} .
+ */
+ protected static String getScheduledGraphString(StructuredGraph graph) {
+ SchedulePhase schedule = new SchedulePhase(SchedulingStrategy.EARLIEST);
+ schedule.apply(graph);
+ ScheduleResult scheduleResult = graph.getLastSchedule();
+
+ StringBuilder result = new StringBuilder();
+ Block[] blocks = scheduleResult.getCFG().getBlocks();
+ for (Block block : blocks) {
+ result.append("Block " + block + " ");
+ if (block == scheduleResult.getCFG().getStartBlock()) {
+ result.append("* ");
+ }
+ result.append("-> ");
+ for (Block succ : block.getSuccessors()) {
+ result.append(succ + " ");
+ }
+ result.append("\n");
+ for (Node node : scheduleResult.getBlockToNodesMap().get(block)) {
+ result.append(String.format("%1S\n", node));
+ }
+ }
+ return result.toString();
+ }
+
+ protected Backend getBackend() {
+ return backend;
+ }
+
+ protected Suites getSuites() {
+ return suites.getValue();
+ }
+
+ protected LIRSuites getLIRSuites() {
+ return lirSuites.getValue();
+ }
+
+ protected final Providers getProviders() {
+ return providers;
+ }
+
+ protected HighTierContext getDefaultHighTierContext() {
+ return new HighTierContext(getProviders(), getDefaultGraphBuilderSuite(), OptimisticOptimizations.ALL);
+ }
+
+ protected SnippetReflectionProvider getSnippetReflection() {
+ return Graal.getRequiredCapability(SnippetReflectionProvider.class);
+ }
+
+ protected TargetDescription getTarget() {
+ return getTargetProvider().getTarget();
+ }
+
+ protected TargetProvider getTargetProvider() {
+ return getBackend();
+ }
+
+ protected CodeCacheProvider getCodeCache() {
+ return getProviders().getCodeCache();
+ }
+
+ protected ConstantReflectionProvider getConstantReflection() {
+ return getProviders().getConstantReflection();
+ }
+
+ protected MetaAccessProvider getMetaAccess() {
+ return getProviders().getMetaAccess();
+ }
+
+ protected LoweringProvider getLowerer() {
+ return getProviders().getLowerer();
+ }
+
+ protected CompilationIdentifier getCompilationId(ResolvedJavaMethod method) {
+ return getBackend().getCompilationIdentifier(method);
+ }
+
+ protected CompilationIdentifier getOrCreateCompilationId(final ResolvedJavaMethod installedCodeOwner, StructuredGraph graph) {
+ if (graph != null) {
+ return graph.compilationId();
+ }
+ return getCompilationId(installedCodeOwner);
+ }
+
+ protected void testN(int n, final String name, final Object... args) {
+ final List<Throwable> errors = new ArrayList<>(n);
+ Thread[] threads = new Thread[n];
+ for (int i = 0; i < n; i++) {
+ Thread t = new Thread(i + ":" + name) {
+
+ @Override
+ public void run() {
+ try {
+ test(name, args);
+ } catch (Throwable e) {
+ errors.add(e);
+ }
+ }
+ };
+ threads[i] = t;
+ t.start();
+ }
+ for (int i = 0; i < n; i++) {
+ try {
+ threads[i].join();
+ } catch (InterruptedException e) {
+ errors.add(e);
+ }
+ }
+ if (!errors.isEmpty()) {
+ throw new MultiCauseAssertionError(errors.size() + " failures", errors.toArray(new Throwable[errors.size()]));
+ }
+ }
+
+ protected Object referenceInvoke(ResolvedJavaMethod method, Object receiver, Object... args) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
+ return invoke(method, receiver, args);
+ }
+
+ protected static class Result {
+
+ public final Object returnValue;
+ public final Throwable exception;
+
+ public Result(Object returnValue, Throwable exception) {
+ this.returnValue = returnValue;
+ this.exception = exception;
+ }
+
+ @Override
+ public String toString() {
+ return exception == null ? returnValue == null ? "null" : returnValue.toString() : "!" + exception;
+ }
+ }
+
+ /**
+ * Called before a test is executed.
+ */
+ protected void before(@SuppressWarnings("unused") ResolvedJavaMethod method) {
+ }
+
+ /**
+ * Called after a test is executed.
+ */
+ protected void after() {
+ }
+
+ protected Result executeExpected(ResolvedJavaMethod method, Object receiver, Object... args) {
+ before(method);
+ try {
+ // This gives us both the expected return value as well as ensuring that the method to
+ // be compiled is fully resolved
+ return new Result(referenceInvoke(method, receiver, args), null);
+ } catch (InvocationTargetException e) {
+ return new Result(null, e.getTargetException());
+ } catch (Exception e) {
+ throw new RuntimeException(e);
+ } finally {
+ after();
+ }
+ }
+
+ protected Result executeActual(ResolvedJavaMethod method, Object receiver, Object... args) {
+ before(method);
+ Object[] executeArgs = argsWithReceiver(receiver, args);
+
+ checkArgs(method, executeArgs);
+
+ InstalledCode compiledMethod = getCode(method);
+ try {
+ return new Result(compiledMethod.executeVarargs(executeArgs), null);
+ } catch (Throwable e) {
+ return new Result(null, e);
+ } finally {
+ after();
+ }
+ }
+
+ protected void checkArgs(ResolvedJavaMethod method, Object[] args) {
+ JavaType[] sig = method.toParameterTypes();
+ Assert.assertEquals(sig.length, args.length);
+ for (int i = 0; i < args.length; i++) {
+ JavaType javaType = sig[i];
+ JavaKind kind = javaType.getJavaKind();
+ Object arg = args[i];
+ if (kind == JavaKind.Object) {
+ if (arg != null && javaType instanceof ResolvedJavaType) {
+ ResolvedJavaType resolvedJavaType = (ResolvedJavaType) javaType;
+ Assert.assertTrue(resolvedJavaType + " from " + getMetaAccess().lookupJavaType(arg.getClass()), resolvedJavaType.isAssignableFrom(getMetaAccess().lookupJavaType(arg.getClass())));
+ }
+ } else {
+ Assert.assertNotNull(arg);
+ Assert.assertEquals(kind.toBoxedJavaClass(), arg.getClass());
+ }
+ }
+ }
+
+ /**
+ * Prepends a non-null receiver argument to a given list or args.
+ *
+ * @param receiver the receiver argument to prepend if it is non-null
+ */
+ protected Object[] argsWithReceiver(Object receiver, Object... args) {
+ Object[] executeArgs;
+ if (receiver == null) {
+ executeArgs = args;
+ } else {
+ executeArgs = new Object[args.length + 1];
+ executeArgs[0] = receiver;
+ for (int i = 0; i < args.length; i++) {
+ executeArgs[i + 1] = args[i];
+ }
+ }
+ return applyArgSuppliers(executeArgs);
+ }
+
+ protected void test(String name, Object... args) {
+ try {
+ ResolvedJavaMethod method = getResolvedJavaMethod(name);
+ Object receiver = method.isStatic() ? null : this;
+ test(method, receiver, args);
+ } catch (AssumptionViolatedException e) {
+ // Suppress so that subsequent calls to this method within the
+ // same Junit @Test annotated method can proceed.
+ }
+ }
+
+ /**
+ * Type denoting a lambda that supplies a fresh value each time it is called. This is useful
+ * when supplying an argument to {@link GraalCompilerTest#test(String, Object...)} where the
+ * test modifies the state of the argument (e.g., updates a field).
+ */
+ @FunctionalInterface
+ public interface ArgSupplier extends Supplier<Object> {
+ }
+
+ /**
+ * Convenience method for using an {@link ArgSupplier} lambda in a varargs list.
+ */
+ public static Object supply(ArgSupplier supplier) {
+ return supplier;
+ }
+
+ protected void test(ResolvedJavaMethod method, Object receiver, Object... args) {
+ Result expect = executeExpected(method, receiver, args);
+ if (getCodeCache() == null) {
+ return;
+ }
+ testAgainstExpected(method, expect, receiver, args);
+ }
+
+ /**
+ * Process a given set of arguments, converting any {@link ArgSupplier} argument to the argument
+ * it supplies.
+ */
+ protected Object[] applyArgSuppliers(Object... args) {
+ Object[] res = args;
+ for (int i = 0; i < args.length; i++) {
+ if (args[i] instanceof ArgSupplier) {
+ if (res == args) {
+ res = args.clone();
+ }
+ res[i] = ((ArgSupplier) args[i]).get();
+ }
+ }
+ return res;
+ }
+
+ protected void testAgainstExpected(ResolvedJavaMethod method, Result expect, Object receiver, Object... args) {
+ testAgainstExpected(method, expect, Collections.<DeoptimizationReason> emptySet(), receiver, args);
+ }
+
+ protected Result executeActualCheckDeopt(ResolvedJavaMethod method, Set<DeoptimizationReason> shouldNotDeopt, Object receiver, Object... args) {
+ Map<DeoptimizationReason, Integer> deoptCounts = new EnumMap<>(DeoptimizationReason.class);
+ ProfilingInfo profile = method.getProfilingInfo();
+ for (DeoptimizationReason reason : shouldNotDeopt) {
+ deoptCounts.put(reason, profile.getDeoptimizationCount(reason));
+ }
+ Result actual = executeActual(method, receiver, args);
+ profile = method.getProfilingInfo(); // profile can change after execution
+ for (DeoptimizationReason reason : shouldNotDeopt) {
+ Assert.assertEquals((int) deoptCounts.get(reason), profile.getDeoptimizationCount(reason));
+ }
+ return actual;
+ }
+
+ protected void assertEquals(Result expect, Result actual) {
+ if (expect.exception != null) {
+ Assert.assertTrue("expected " + expect.exception, actual.exception != null);
+ Assert.assertEquals("Exception class", expect.exception.getClass(), actual.exception.getClass());
+ Assert.assertEquals("Exception message", expect.exception.getMessage(), actual.exception.getMessage());
+ } else {
+ if (actual.exception != null) {
+ throw new AssertionError("expected " + expect.returnValue + " but got an exception", actual.exception);
+ }
+ assertDeepEquals(expect.returnValue, actual.returnValue);
+ }
+ }
+
+ protected void testAgainstExpected(ResolvedJavaMethod method, Result expect, Set<DeoptimizationReason> shouldNotDeopt, Object receiver, Object... args) {
+ Result actual = executeActualCheckDeopt(method, shouldNotDeopt, receiver, args);
+ assertEquals(expect, actual);
+ }
+
+ private Map<ResolvedJavaMethod, InstalledCode> cache = new HashMap<>();
+
+ /**
+ * Gets installed code for a given method, compiling it first if necessary. The graph is parsed
+ * {@link #parseEager(ResolvedJavaMethod, AllowAssumptions) eagerly}.
+ */
+ protected InstalledCode getCode(ResolvedJavaMethod method) {
+ return getCode(method, null);
+ }
+
+ /**
+ * Gets installed code for a given method, compiling it first if necessary.
+ *
+ * @param installedCodeOwner the method the compiled code will be associated with when installed
+ * @param graph the graph to be compiled. If null, a graph will be obtained from
+ * {@code installedCodeOwner} via {@link #parseForCompile(ResolvedJavaMethod)}.
+ */
+ protected InstalledCode getCode(ResolvedJavaMethod installedCodeOwner, StructuredGraph graph) {
+ return getCode(installedCodeOwner, graph, false);
+ }
+
+ protected InstalledCode getCode(final ResolvedJavaMethod installedCodeOwner, StructuredGraph graph0, boolean forceCompile) {
+ return getCode(installedCodeOwner, graph0, forceCompile, false);
+ }
+
+ /**
+ * Gets installed code for a given method and graph, compiling it first if necessary.
+ *
+ * @param installedCodeOwner the method the compiled code will be associated with when installed
+ * @param graph the graph to be compiled. If null, a graph will be obtained from
+ * {@code installedCodeOwner} via {@link #parseForCompile(ResolvedJavaMethod)}.
+ * @param forceCompile specifies whether to ignore any previous code cached for the (method,
+ * key) pair
+ * @param installDefault specifies whether to install as the default implementation
+ */
+ @SuppressWarnings("try")
+ protected InstalledCode getCode(final ResolvedJavaMethod installedCodeOwner, StructuredGraph graph, boolean forceCompile, boolean installDefault) {
+ if (!forceCompile) {
+ InstalledCode cached = cache.get(installedCodeOwner);
+ if (cached != null) {
+ if (cached.isValid()) {
+ return cached;
+ }
+ }
+ }
+
+ final CompilationIdentifier id = getOrCreateCompilationId(installedCodeOwner, graph);
+
+ InstalledCode installedCode = null;
+ try (AllocSpy spy = AllocSpy.open(installedCodeOwner); Scope ds = Debug.scope("Compiling", new DebugDumpScope(id.toString(CompilationIdentifier.Verbosity.ID), true))) {
+ final boolean printCompilation = PrintCompilation.getValue() && !TTY.isSuppressed();
+ if (printCompilation) {
+ TTY.println(String.format("@%-6s Graal %-70s %-45s %-50s ...", id, installedCodeOwner.getDeclaringClass().getName(), installedCodeOwner.getName(), installedCodeOwner.getSignature()));
+ }
+ long start = System.currentTimeMillis();
+ CompilationResult compResult = compile(installedCodeOwner, graph, id);
+ if (printCompilation) {
+ TTY.println(String.format("@%-6s Graal %-70s %-45s %-50s | %4dms %5dB", id, "", "", "", System.currentTimeMillis() - start, compResult.getTargetCodeSize()));
+ }
+
+ try (Scope s = Debug.scope("CodeInstall", getCodeCache(), installedCodeOwner, compResult)) {
+ if (installDefault) {
+ installedCode = addDefaultMethod(installedCodeOwner, compResult);
+ } else {
+ installedCode = addMethod(installedCodeOwner, compResult);
+ }
+ if (installedCode == null) {
+ throw new GraalError("Could not install code for " + installedCodeOwner.format("%H.%n(%p)"));
+ }
+ } catch (Throwable e) {
+ throw Debug.handle(e);
+ }
+ } catch (Throwable e) {
+ throw Debug.handle(e);
+ }
+
+ if (!forceCompile) {
+ cache.put(installedCodeOwner, installedCode);
+ }
+ return installedCode;
+ }
+
+ /**
+ * Used to produce a graph for a method about to be compiled by
+ * {@link #compile(ResolvedJavaMethod, StructuredGraph)} if the second parameter to that method
+ * is null.
+ *
+ * The default implementation in {@link GraalCompilerTest} is to call
+ * {@link #parseEager(ResolvedJavaMethod, AllowAssumptions)}.
+ */
+ protected final StructuredGraph parseForCompile(ResolvedJavaMethod method) {
+ return parseEager(method, AllowAssumptions.YES);
+ }
+
+ protected StructuredGraph parseForCompile(ResolvedJavaMethod method, CompilationIdentifier compilationId) {
+ return parseEager(method, AllowAssumptions.YES, compilationId);
+ }
+
+ /**
+ * Compiles a given method.
+ *
+ * @param installedCodeOwner the method the compiled code will be associated with when installed
+ * @param graph the graph to be compiled for {@code installedCodeOwner}. If null, a graph will
+ * be obtained from {@code installedCodeOwner} via
+ * {@link #parseForCompile(ResolvedJavaMethod)}.
+ */
+ protected final CompilationResult compile(ResolvedJavaMethod installedCodeOwner, StructuredGraph graph) {
+ return compile(installedCodeOwner, graph, getOrCreateCompilationId(installedCodeOwner, graph));
+ }
+
+ protected CompilationResult compile(ResolvedJavaMethod installedCodeOwner, StructuredGraph graph, CompilationIdentifier compilationId) {
+ return compile(installedCodeOwner, graph, new CompilationResult(), compilationId);
+ }
+
+ /**
+ * Compiles a given method.
+ *
+ * @param installedCodeOwner the method the compiled code will be associated with when installed
+ * @param graph the graph to be compiled for {@code installedCodeOwner}. If null, a graph will
+ * be obtained from {@code installedCodeOwner} via
+ * {@link #parseForCompile(ResolvedJavaMethod)}.
+ * @param compilationResult
+ * @param compilationId
+ */
+ @SuppressWarnings("try")
+ protected CompilationResult compile(ResolvedJavaMethod installedCodeOwner, StructuredGraph graph, CompilationResult compilationResult, CompilationIdentifier compilationId) {
+ StructuredGraph graphToCompile = graph == null ? parseForCompile(installedCodeOwner, compilationId) : graph;
+ lastCompiledGraph = graphToCompile;
+ try (Scope s = Debug.scope("Compile", graphToCompile)) {
+ Request<CompilationResult> request = new Request<>(graphToCompile, installedCodeOwner, getProviders(), getBackend(), getDefaultGraphBuilderSuite(), OptimisticOptimizations.ALL,
+ graphToCompile.getProfilingInfo(), getSuites(), getLIRSuites(), compilationResult, CompilationResultBuilderFactory.Default);
+ return GraalCompiler.compile(request);
+ } catch (Throwable e) {
+ throw Debug.handle(e);
+ }
+ }
+
+ protected StructuredGraph lastCompiledGraph;
+
+ protected SpeculationLog getSpeculationLog() {
+ return null;
+ }
+
+ protected InstalledCode addMethod(final ResolvedJavaMethod method, final CompilationResult compilationResult) {
+ return backend.addInstalledCode(method, null, compilationResult);
+ }
+
+ protected InstalledCode addDefaultMethod(final ResolvedJavaMethod method, final CompilationResult compilationResult) {
+ return backend.createDefaultInstalledCode(method, compilationResult);
+ }
+
+ private final Map<ResolvedJavaMethod, Method> methodMap = new HashMap<>();
+
+ /**
+ * Converts a reflection {@link Method} to a {@link ResolvedJavaMethod}.
+ */
+ protected ResolvedJavaMethod asResolvedJavaMethod(Method method) {
+ ResolvedJavaMethod javaMethod = getMetaAccess().lookupJavaMethod(method);
+ methodMap.put(javaMethod, method);
+ return javaMethod;
+ }
+
+ protected ResolvedJavaMethod getResolvedJavaMethod(String methodName) {
+ return asResolvedJavaMethod(getMethod(methodName));
+ }
+
+ protected ResolvedJavaMethod getResolvedJavaMethod(Class<?> clazz, String methodName) {
+ return asResolvedJavaMethod(getMethod(clazz, methodName));
+ }
+
+ protected ResolvedJavaMethod getResolvedJavaMethod(Class<?> clazz, String methodName, Class<?>... parameterTypes) {
+ return asResolvedJavaMethod(getMethod(clazz, methodName, parameterTypes));
+ }
+
+ /**
+ * Gets the reflection {@link Method} from which a given {@link ResolvedJavaMethod} was created
+ * or null if {@code javaMethod} does not correspond to a reflection method.
+ */
+ protected Method lookupMethod(ResolvedJavaMethod javaMethod) {
+ return methodMap.get(javaMethod);
+ }
+
+ protected Object invoke(ResolvedJavaMethod javaMethod, Object receiver, Object... args) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
+ Method method = lookupMethod(javaMethod);
+ Assert.assertTrue(method != null);
+ if (!method.isAccessible()) {
+ method.setAccessible(true);
+ }
+ return method.invoke(receiver, applyArgSuppliers(args));
+ }
+
+ /**
+ * Parses a Java method in {@linkplain GraphBuilderConfiguration#getDefault default} mode to
+ * produce a graph.
+ *
+ * @param methodName the name of the method in {@code this.getClass()} to be parsed
+ */
+ protected StructuredGraph parseProfiled(String methodName, AllowAssumptions allowAssumptions) {
+ return parseProfiled(getResolvedJavaMethod(methodName), allowAssumptions);
+ }
+
+ /**
+ * Parses a Java method in {@linkplain GraphBuilderConfiguration#getDefault default} mode to
+ * produce a graph.
+ */
+ protected final StructuredGraph parseProfiled(ResolvedJavaMethod m, AllowAssumptions allowAssumptions) {
+ return parseProfiled(m, allowAssumptions, getCompilationId(m));
+ }
+
+ protected StructuredGraph parseProfiled(ResolvedJavaMethod m, AllowAssumptions allowAssumptions, CompilationIdentifier compilationId) {
+ return parse1(m, getDefaultGraphBuilderSuite(), allowAssumptions, compilationId);
+ }
+
+ /**
+ * Parses a Java method with {@linkplain GraphBuilderConfiguration#withEagerResolving(boolean)}
+ * set to true to produce a graph.
+ *
+ * @param methodName the name of the method in {@code this.getClass()} to be parsed
+ */
+ protected final StructuredGraph parseEager(String methodName, AllowAssumptions allowAssumptions) {
+ return parseEager(getResolvedJavaMethod(methodName), allowAssumptions);
+ }
+
+ /**
+ * Parses a Java method with {@linkplain GraphBuilderConfiguration#withEagerResolving(boolean)}
+ * set to true to produce a graph.
+ */
+ protected final StructuredGraph parseEager(ResolvedJavaMethod m, AllowAssumptions allowAssumptions) {
+ return parseEager(m, allowAssumptions, getCompilationId(m));
+ }
+
+ protected StructuredGraph parseEager(ResolvedJavaMethod m, AllowAssumptions allowAssumptions, CompilationIdentifier compilationId) {
+ return parse1(m, getCustomGraphBuilderSuite(GraphBuilderConfiguration.getDefault(getDefaultGraphBuilderPlugins()).withEagerResolving(true)), allowAssumptions, compilationId);
+ }
+
+ /**
+ * Parses a Java method using {@linkplain GraphBuilderConfiguration#withFullInfopoints(boolean)
+ * full debug} set to true to produce a graph.
+ */
+ protected final StructuredGraph parseDebug(ResolvedJavaMethod m, AllowAssumptions allowAssumptions) {
+ return parseDebug(m, allowAssumptions, getCompilationId(m));
+ }
+
+ protected StructuredGraph parseDebug(ResolvedJavaMethod m, AllowAssumptions allowAssumptions, CompilationIdentifier compilationId) {
+ return parse1(m, getCustomGraphBuilderSuite(GraphBuilderConfiguration.getDefault(getDefaultGraphBuilderPlugins()).withFullInfopoints(true)), allowAssumptions, compilationId);
+ }
+
+ @SuppressWarnings("try")
+ private StructuredGraph parse1(ResolvedJavaMethod javaMethod, PhaseSuite<HighTierContext> graphBuilderSuite, AllowAssumptions allowAssumptions, CompilationIdentifier compilationId) {
+ assert javaMethod.getAnnotation(Test.class) == null : "shouldn't parse method with @Test annotation: " + javaMethod;
+ StructuredGraph graph = new StructuredGraph(javaMethod, allowAssumptions, getSpeculationLog(), compilationId);
+ try (Scope ds = Debug.scope("Parsing", javaMethod, graph)) {
+ graphBuilderSuite.apply(graph, getDefaultHighTierContext());
+ return graph;
+ } catch (Throwable e) {
+ throw Debug.handle(e);
+ }
+ }
+
+ protected Plugins getDefaultGraphBuilderPlugins() {
+ PhaseSuite<HighTierContext> suite = backend.getSuites().getDefaultGraphBuilderSuite();
+ Plugins defaultPlugins = ((GraphBuilderPhase) suite.findPhase(GraphBuilderPhase.class).previous()).getGraphBuilderConfig().getPlugins();
+ // defensive copying
+ return new Plugins(defaultPlugins);
+ }
+
+ protected PhaseSuite<HighTierContext> getDefaultGraphBuilderSuite() {
+ // defensive copying
+ return backend.getSuites().getDefaultGraphBuilderSuite().copy();
+ }
+
+ protected PhaseSuite<HighTierContext> getCustomGraphBuilderSuite(GraphBuilderConfiguration gbConf) {
+ PhaseSuite<HighTierContext> suite = getDefaultGraphBuilderSuite();
+ ListIterator<BasePhase<? super HighTierContext>> iterator = suite.findPhase(GraphBuilderPhase.class);
+ GraphBuilderConfiguration gbConfCopy = editGraphBuilderConfiguration(gbConf.copy());
+ iterator.remove();
+ iterator.add(new GraphBuilderPhase(gbConfCopy));
+ return suite;
+ }
+
+ protected GraphBuilderConfiguration editGraphBuilderConfiguration(GraphBuilderConfiguration conf) {
+ InvocationPlugins invocationPlugins = conf.getPlugins().getInvocationPlugins();
+ invocationPlugins.register(new InvocationPlugin() {
+ @Override
+ public boolean apply(GraphBuilderContext b, ResolvedJavaMethod targetMethod, Receiver receiver) {
+ b.add(new BreakpointNode());
+ return true;
+ }
+ }, GraalCompilerTest.class, "breakpoint");
+ invocationPlugins.register(new InvocationPlugin() {
+ @Override
+ public boolean apply(GraphBuilderContext b, ResolvedJavaMethod targetMethod, Receiver receiver, ValueNode arg0) {
+ b.add(new BreakpointNode(arg0));
+ return true;
+ }
+ }, GraalCompilerTest.class, "breakpoint", int.class);
+ invocationPlugins.register(new InvocationPlugin() {
+ @Override
+ public boolean apply(GraphBuilderContext b, ResolvedJavaMethod targetMethod, Receiver receiver) {
+ b.add(new NotOptimizedNode());
+ return true;
+ }
+ }, GraalCompilerTest.class, "shouldBeOptimizedAway");
+
+ conf.getPlugins().prependInlineInvokePlugin(new InlineInvokePlugin() {
+
+ @Override
+ public InlineInfo shouldInlineInvoke(GraphBuilderContext b, ResolvedJavaMethod method, ValueNode[] args) {
+ BytecodeParserNeverInline neverInline = method.getAnnotation(BytecodeParserNeverInline.class);
+ if (neverInline != null) {
+ return neverInline.invokeWithException() ? DO_NOT_INLINE_WITH_EXCEPTION : DO_NOT_INLINE_NO_EXCEPTION;
+ }
+ if (method.getAnnotation(BytecodeParserForceInline.class) != null) {
+ return InlineInfo.createStandardInlineInfo(method);
+ }
+ return bytecodeParserShouldInlineInvoke(b, method, args);
+ }
+ });
+ return conf;
+ }
+
+ /**
+ * Supplements {@link BytecodeParserForceInline} and {@link BytecodeParserNeverInline} in terms
+ * of allowing a test to influence the inlining decision made during bytecode parsing.
+ *
+ * @see InlineInvokePlugin#shouldInlineInvoke(GraphBuilderContext, ResolvedJavaMethod,
+ * ValueNode[])
+ */
+ @SuppressWarnings("unused")
+ protected InlineInvokePlugin.InlineInfo bytecodeParserShouldInlineInvoke(GraphBuilderContext b, ResolvedJavaMethod method, ValueNode[] args) {
+ return null;
+ }
+
+ @NodeInfo
+ public static class NotOptimizedNode extends FixedWithNextNode {
+ private static final NodeClass<NotOptimizedNode> TYPE = NodeClass.create(NotOptimizedNode.class);
+
+ protected NotOptimizedNode() {
+ super(TYPE, StampFactory.forVoid());
+ }
+
+ }
+
+ protected Replacements getReplacements() {
+ return getProviders().getReplacements();
+ }
+
+ /**
+ * Inject a probability for a branch condition into the profiling information of this test case.
+ *
+ * @param p the probability that cond is true
+ * @param cond the condition of the branch
+ * @return cond
+ */
+ protected static boolean branchProbability(double p, boolean cond) {
+ return GraalDirectives.injectBranchProbability(p, cond);
+ }
+
+ /**
+ * Inject an iteration count for a loop condition into the profiling information of this test
+ * case.
+ *
+ * @param i the iteration count of the loop
+ * @param cond the condition of the loop
+ * @return cond
+ */
+ protected static boolean iterationCount(double i, boolean cond) {
+ return GraalDirectives.injectIterationCount(i, cond);
+ }
+
+ /**
+ * Test if the current test runs on the given platform. The name must match the name given in
+ * the {@link Architecture#getName()}.
+ *
+ * @param name The name to test
+ * @return true if we run on the architecture given by name
+ */
+ protected boolean isArchitecture(String name) {
+ return name.equals(backend.getTarget().arch.getName());
+ }
+}