Mercurial > hg > graal-compiler
view graal/com.oracle.graal.compiler.test/src/com/oracle/graal/compiler/test/DegeneratedLoopsTest.java @ 15076:54100943a362
simplified com.oracle.graal.hotspot.meta.HotSpotLoweringProvider.get*BarrierType methods
author | twisti |
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date | Fri, 04 Apr 2014 17:23:20 -0700 |
parents | f4f0a8a01ce0 |
children | c55f44b3c5e5 |
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/* * Copyright (c) 2011, 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.compiler.test; import org.junit.*; import com.oracle.graal.api.code.*; import com.oracle.graal.debug.*; import com.oracle.graal.debug.Debug.Scope; import com.oracle.graal.nodes.*; import com.oracle.graal.phases.*; import com.oracle.graal.phases.common.*; import com.oracle.graal.phases.tiers.*; /** * In the following tests, the usages of local variable "a" are replaced with the integer constant * 0. Then canonicalization is applied and it is verified that the resulting graph is equal to the * graph of the method that just has a "return 1" statement in it. */ public class DegeneratedLoopsTest extends GraalCompilerTest { private static final String REFERENCE_SNIPPET = "referenceSnippet"; @SuppressWarnings("all") public static int referenceSnippet(int a) { return a; } @Test public void test1() { test("test1Snippet"); } private static class UnresolvedException extends RuntimeException { private static final long serialVersionUID = 5215434338750728440L; static { if (true) { throw new UnsupportedOperationException("this class may never be initialized"); } } } @SuppressWarnings("all") public static int test1Snippet(int a) { for (;;) { try { test(); break; } catch (UnresolvedException e) { } } return a; } private static void test() { } private void test(final String snippet) { try (Scope s = Debug.scope("DegeneratedLoopsTest", new DebugDumpScope(snippet))) { StructuredGraph graph = parse(snippet); HighTierContext context = new HighTierContext(getProviders(), new Assumptions(false), null, getDefaultGraphBuilderSuite(), OptimisticOptimizations.ALL); new InliningPhase(new CanonicalizerPhase(true)).apply(graph, context); new CanonicalizerPhase(true).apply(graph, context); Debug.dump(graph, "Graph"); StructuredGraph referenceGraph = parse(REFERENCE_SNIPPET); Debug.dump(referenceGraph, "ReferenceGraph"); assertEquals(referenceGraph, graph); } catch (Throwable e) { throw Debug.handle(e); } } }