--- /dev/null 2017-01-22 10:16:57.869617664 -0800 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/ea/PoorMansEATest.java 2017-02-15 16:57:59.361994713 -0800 @@ -0,0 +1,88 @@ +/* + * Copyright (c) 2014, 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.ea; + +import org.junit.Test; + +import org.graalvm.compiler.core.test.GraalCompilerTest; +import org.graalvm.compiler.debug.Debug; +import org.graalvm.compiler.debug.Debug.Scope; +import org.graalvm.compiler.debug.DebugDumpScope; +import org.graalvm.compiler.graph.Node; +import org.graalvm.compiler.nodes.FrameState; +import org.graalvm.compiler.nodes.StructuredGraph; +import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions; +import org.graalvm.compiler.nodes.java.AbstractNewObjectNode; +import org.graalvm.compiler.nodes.java.NewInstanceNode; +import org.graalvm.compiler.nodes.spi.LoweringTool; +import org.graalvm.compiler.phases.common.CanonicalizerPhase; +import org.graalvm.compiler.phases.common.LoweringPhase; +import org.graalvm.compiler.phases.common.inlining.InliningPhase; +import org.graalvm.compiler.phases.tiers.HighTierContext; +import org.graalvm.compiler.phases.tiers.PhaseContext; + +/** + * Tests {@link AbstractNewObjectNode#simplify(org.graalvm.compiler.graph.spi.SimplifierTool)}. + * + */ +public class PoorMansEATest extends GraalCompilerTest { + public static class A { + public A obj; + } + + public static A test1Snippet() { + A a = new A(); + a.obj = a; + return null; + } + + @Test + public void test1() { + test("test1Snippet"); + } + + @SuppressWarnings("try") + private void test(final String snippet) { + try (Scope s = Debug.scope("PoorMansEATest", new DebugDumpScope(snippet))) { + StructuredGraph graph = parseEager(snippet, AllowAssumptions.NO); + HighTierContext highTierContext = getDefaultHighTierContext(); + new InliningPhase(new CanonicalizerPhase()).apply(graph, highTierContext); + PhaseContext context = new PhaseContext(getProviders()); + new LoweringPhase(new CanonicalizerPhase(), LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, context); + + // remove framestates in order to trigger the simplification. + cleanup: for (FrameState fs : graph.getNodes(FrameState.TYPE).snapshot()) { + for (Node input : fs.inputs()) { + if (input instanceof NewInstanceNode) { + fs.replaceAtUsages(null); + fs.safeDelete(); + continue cleanup; + } + } + } + new CanonicalizerPhase().apply(graph, context); + } catch (Throwable e) { + throw Debug.handle(e); + } + } +}