Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot.amd64.test/src/com/oracle/graal/hotspot/amd64/test/CompressedNullCheckTest.java @ 21198:d2bae7605fe4
Introduce StackMove LIR instruction.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Mon, 27 Apr 2015 10:57:34 +0200 |
parents | 3253fe1bed41 |
children | b1530a6cce8c |
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/* * 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 com.oracle.graal.hotspot.amd64.test; import org.junit.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.*; import com.oracle.graal.compiler.test.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.hotspot.nodes.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.calc.*; import com.oracle.graal.options.*; import com.oracle.graal.options.OptionValue.OverrideScope; /** * Ensures that frame omission works in cases where it is expected to. */ public class CompressedNullCheckTest extends GraalCompilerTest { private static final class Container { Integer i; } public static void testSnippet(Container c) { c.i.intValue(); } private void testImplicit(Integer i) { Assume.assumeTrue(HotSpotGraalRuntime.runtime().getConfig().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); } } private void testExplicit(Integer i) { Assume.assumeTrue(HotSpotGraalRuntime.runtime().getConfig().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); } }