| /* |
| * Copyright (c) 2014, 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.hotspot.amd64.test; |
| |
| import org.junit.Assert; |
| import org.junit.Assume; |
| import org.junit.Test; |
| |
| import org.graalvm.compiler.core.common.GraalOptions; |
| import org.graalvm.compiler.hotspot.nodes.CompressionNode; |
| import org.graalvm.compiler.hotspot.test.HotSpotGraalCompilerTest; |
| import org.graalvm.compiler.nodes.StructuredGraph; |
| import org.graalvm.compiler.nodes.ValueNode; |
| import org.graalvm.compiler.nodes.calc.IsNullNode; |
| import org.graalvm.compiler.options.OptionValue; |
| import org.graalvm.compiler.options.OptionValue.OverrideScope; |
| |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| |
| /** |
| * Ensures that frame omission works in cases where it is expected to. |
| */ |
| public class CompressedNullCheckTest extends HotSpotGraalCompilerTest { |
| |
| private static final class Container { |
| Integer i; |
| } |
| |
| public static void testSnippet(Container c) { |
| c.i.intValue(); |
| } |
| |
| @SuppressWarnings("try") |
| private void testImplicit(Integer i) { |
| Assume.assumeTrue(runtime().getVMConfig().useCompressedOops); |
| |
| Container c = new Container(); |
| c.i = i; |
| |
| try (OverrideScope s = OptionValue.override(GraalOptions.OptImplicitNullChecks, true)) { |
| ResolvedJavaMethod method = getResolvedJavaMethod("testSnippet"); |
| Result expect = executeExpected(method, null, c); |
| |
| // make sure we don't get a profile that removes the implicit null check |
| method.reprofile(); |
| |
| Result actual = executeActual(method, null, c); |
| assertEquals(expect, actual); |
| } |
| } |
| |
| @SuppressWarnings("try") |
| private void testExplicit(Integer i) { |
| Assume.assumeTrue(runtime().getVMConfig().useCompressedOops); |
| |
| Container c = new Container(); |
| c.i = i; |
| |
| try (OverrideScope s = OptionValue.override(GraalOptions.OptImplicitNullChecks, false)) { |
| test("testSnippet", c); |
| } |
| } |
| |
| @Test |
| public void implicit() { |
| testImplicit(new Integer(1)); |
| } |
| |
| @Test |
| public void implicitNull() { |
| testImplicit(null); |
| } |
| |
| @Test |
| public void explicit() { |
| testExplicit(new Integer(1)); |
| } |
| |
| @Test |
| public void explicitNull() { |
| testExplicit(null); |
| } |
| |
| @Override |
| protected boolean checkMidTierGraph(StructuredGraph graph) { |
| int count = 0; |
| for (IsNullNode isNull : graph.getNodes().filter(IsNullNode.class).snapshot()) { |
| ValueNode value = isNull.getValue(); |
| if (value instanceof CompressionNode) { |
| count++; |
| isNull.replaceFirstInput(value, ((CompressionNode) value).getValue()); |
| } |
| } |
| Assert.assertEquals("graph should contain exactly one IsNullNode", 1, count); |
| return super.checkMidTierGraph(graph); |
| } |
| } |