| /* |
| * Copyright (c) 2011, 2015, 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 org.junit.Assert; |
| import org.junit.Ignore; |
| import org.junit.Test; |
| |
| import org.graalvm.compiler.api.directives.GraalDirectives; |
| import org.graalvm.compiler.debug.Debug; |
| import org.graalvm.compiler.debug.Debug.Scope; |
| import org.graalvm.compiler.debug.DebugDumpScope; |
| import org.graalvm.compiler.nodes.DeoptimizeNode; |
| import org.graalvm.compiler.nodes.StructuredGraph; |
| import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions; |
| import org.graalvm.compiler.nodes.memory.ReadNode; |
| import org.graalvm.compiler.nodes.spi.LoweringTool; |
| import org.graalvm.compiler.phases.OptimisticOptimizations; |
| import org.graalvm.compiler.phases.common.CanonicalizerPhase; |
| import org.graalvm.compiler.phases.common.FloatingReadPhase; |
| import org.graalvm.compiler.phases.common.GuardLoweringPhase; |
| import org.graalvm.compiler.phases.common.LoweringPhase; |
| import org.graalvm.compiler.phases.tiers.MidTierContext; |
| import org.graalvm.compiler.phases.tiers.PhaseContext; |
| |
| /** |
| * Tests that the hub access and the null check are folded. |
| */ |
| public class ImplicitNullCheckTest extends GraphScheduleTest { |
| |
| public static final class Receiver { |
| |
| public int a; |
| } |
| |
| public static int test1Snippet(Object o) { |
| if (GraalDirectives.guardingNonNull(o) instanceof Receiver) { |
| return 42; |
| } |
| return 0; |
| } |
| |
| @Ignore("temporarily disable until LoadHub lowering is clarified") |
| @Test |
| public void test1() { |
| test("test1Snippet"); |
| } |
| |
| @SuppressWarnings("try") |
| private void test(final String snippet) { |
| try (Scope s = Debug.scope("FloatingReadTest", new DebugDumpScope(snippet))) { |
| StructuredGraph graph = parseEager(snippet, AllowAssumptions.YES); |
| PhaseContext context = new PhaseContext(getProviders()); |
| new LoweringPhase(new CanonicalizerPhase(), LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, context); |
| new FloatingReadPhase().apply(graph); |
| MidTierContext midTierContext = new MidTierContext(getProviders(), getTargetProvider(), OptimisticOptimizations.ALL, graph.getProfilingInfo()); |
| new GuardLoweringPhase().apply(graph, midTierContext); |
| |
| Assert.assertEquals(0, graph.getNodes(DeoptimizeNode.TYPE).count()); |
| Assert.assertTrue(graph.getNodes().filter(ReadNode.class).first().canNullCheck()); |
| |
| } catch (Throwable e) { |
| throw Debug.handle(e); |
| } |
| } |
| } |