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/*
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* Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.graalvm.compiler.core.test;
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import org.graalvm.compiler.debug.DebugContext;
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import org.graalvm.compiler.nodes.ProxyNode;
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import org.graalvm.compiler.nodes.StructuredGraph;
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import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;
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import org.graalvm.compiler.nodes.spi.LoweringTool;
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import org.graalvm.compiler.phases.OptimisticOptimizations;
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import org.graalvm.compiler.phases.OptimisticOptimizations.Optimization;
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import org.graalvm.compiler.phases.common.CanonicalizerPhase;
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import org.graalvm.compiler.phases.common.ConditionalEliminationPhase;
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import org.graalvm.compiler.phases.common.ConvertDeoptimizeToGuardPhase;
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import org.graalvm.compiler.phases.common.IterativeConditionalEliminationPhase;
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import org.graalvm.compiler.phases.common.LoweringPhase;
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import org.graalvm.compiler.phases.schedule.SchedulePhase;
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import org.graalvm.compiler.phases.tiers.HighTierContext;
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import org.graalvm.compiler.phases.tiers.PhaseContext;
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import org.junit.Assert;
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/**
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* Collection of tests for {@link org.graalvm.compiler.phases.common.ConditionalEliminationPhase}
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* including those that triggered bugs in this phase.
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*/
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public class ConditionalEliminationTestBase extends GraalCompilerTest {
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protected static int sink0;
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protected static int sink1;
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protected static int sink2;
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/**
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* These tests assume all code paths in called routines are reachable so disable removal of dead
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* code based on method profiles.
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*/
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@Override
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protected HighTierContext getDefaultHighTierContext() {
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return new HighTierContext(getProviders(), getDefaultGraphBuilderSuite(), OptimisticOptimizations.ALL.remove(Optimization.RemoveNeverExecutedCode));
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}
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protected void testConditionalElimination(String snippet, String referenceSnippet) {
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testConditionalElimination(snippet, referenceSnippet, false, false);
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}
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@SuppressWarnings("try")
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protected void testConditionalElimination(String snippet, String referenceSnippet, boolean applyConditionalEliminationOnReference, boolean applyLowering) {
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StructuredGraph graph = parseEager(snippet, AllowAssumptions.YES);
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DebugContext debug = graph.getDebug();
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debug.dump(DebugContext.BASIC_LEVEL, graph, "Graph");
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PhaseContext context = new PhaseContext(getProviders());
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CanonicalizerPhase canonicalizer1 = new CanonicalizerPhase();
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CanonicalizerPhase canonicalizer = new CanonicalizerPhase();
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try (DebugContext.Scope scope = debug.scope("ConditionalEliminationTest", graph)) {
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prepareGraph(graph, canonicalizer1, context, applyLowering);
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new IterativeConditionalEliminationPhase(canonicalizer, true).apply(graph, context);
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canonicalizer.apply(graph, context);
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canonicalizer.apply(graph, context);
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} catch (Throwable t) {
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debug.handle(t);
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}
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StructuredGraph referenceGraph = parseEager(referenceSnippet, AllowAssumptions.YES);
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try (DebugContext.Scope scope = debug.scope("ConditionalEliminationTest.ReferenceGraph", referenceGraph)) {
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prepareGraph(referenceGraph, canonicalizer, context, applyLowering);
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if (applyConditionalEliminationOnReference) {
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new ConditionalEliminationPhase(true).apply(referenceGraph, context);
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}
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canonicalizer.apply(referenceGraph, context);
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canonicalizer.apply(referenceGraph, context);
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} catch (Throwable t) {
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debug.handle(t);
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}
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assertEquals(referenceGraph, graph);
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}
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protected void prepareGraph(StructuredGraph graph, CanonicalizerPhase canonicalizer, PhaseContext context, boolean applyLowering) {
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if (applyLowering) {
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new ConvertDeoptimizeToGuardPhase().apply(graph, context);
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new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, context);
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canonicalizer.apply(graph, context);
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}
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canonicalizer.apply(graph, context);
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new ConvertDeoptimizeToGuardPhase().apply(graph, context);
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}
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public void testProxies(String snippet, int expectedProxiesCreated) {
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StructuredGraph graph = parseEager(snippet, AllowAssumptions.YES);
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PhaseContext context = new PhaseContext(getProviders());
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CanonicalizerPhase canonicalizer1 = new CanonicalizerPhase();
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canonicalizer1.disableSimplification();
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canonicalizer1.apply(graph, context);
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CanonicalizerPhase canonicalizer = new CanonicalizerPhase();
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new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, context);
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canonicalizer.apply(graph, context);
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int baseProxyCount = graph.getNodes().filter(ProxyNode.class).count();
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new ConditionalEliminationPhase(true).apply(graph, context);
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canonicalizer.apply(graph, context);
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new SchedulePhase(graph.getOptions()).apply(graph, context);
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int actualProxiesCreated = graph.getNodes().filter(ProxyNode.class).count() - baseProxyCount;
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Assert.assertEquals(expectedProxiesCreated, actualProxiesCreated);
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}
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}
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