| /* |
| * Copyright (c) 2013, 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 jdk.vm.ci.meta.ResolvedJavaField; |
| import jdk.vm.ci.meta.ResolvedJavaType; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import org.graalvm.compiler.debug.Debug; |
| import org.graalvm.compiler.debug.Debug.Scope; |
| import org.graalvm.compiler.debug.DebugDumpScope; |
| import org.graalvm.compiler.nodes.ParameterNode; |
| import org.graalvm.compiler.nodes.PiNode; |
| import org.graalvm.compiler.nodes.StructuredGraph; |
| import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions; |
| import org.graalvm.compiler.nodes.calc.IsNullNode; |
| import org.graalvm.compiler.nodes.memory.ReadNode; |
| import org.graalvm.compiler.nodes.memory.address.OffsetAddressNode; |
| import org.graalvm.compiler.nodes.spi.LoweringTool; |
| import org.graalvm.compiler.nodes.type.StampTool; |
| import org.graalvm.compiler.phases.common.CanonicalizerPhase; |
| import org.graalvm.compiler.phases.common.LoweringPhase; |
| import org.graalvm.compiler.phases.common.PushThroughPiPhase; |
| import org.graalvm.compiler.phases.tiers.PhaseContext; |
| |
| public class PushNodesThroughPiTest extends GraalCompilerTest { |
| |
| public static class A { |
| |
| public long x = 20; |
| } |
| |
| public static class B extends A { |
| |
| public long y = 10; |
| } |
| |
| public static class C extends B { |
| |
| public long z = 5; |
| } |
| |
| public static long test1Snippet(A a) { |
| C c = (C) a; |
| long ret = c.x; // this can be pushed before the checkcast |
| ret += c.y; // not allowed to push |
| ret += c.z; // not allowed to push |
| // the null-check should be canonicalized with the null-check of the checkcast |
| ret += c != null ? 100 : 200; |
| return ret; |
| } |
| |
| @Test |
| @SuppressWarnings("try") |
| public void test1() { |
| final String snippet = "test1Snippet"; |
| try (Scope s = Debug.scope("PushThroughPi", new DebugDumpScope(snippet))) { |
| StructuredGraph graph = compileTestSnippet(snippet); |
| for (ReadNode rn : graph.getNodes().filter(ReadNode.class)) { |
| OffsetAddressNode address = (OffsetAddressNode) rn.getAddress(); |
| long disp = address.getOffset().asJavaConstant().asLong(); |
| |
| ResolvedJavaType receiverType = StampTool.typeOrNull(address.getBase()); |
| ResolvedJavaField field = receiverType.findInstanceFieldWithOffset(disp, rn.getStackKind()); |
| |
| assert field != null : "Node " + rn + " tries to access a field which doesn't exists for this type"; |
| if (field.getName().equals("x")) { |
| Assert.assertTrue(address.getBase() instanceof ParameterNode); |
| } else { |
| Assert.assertTrue(address.getBase().toString(), address.getBase() instanceof PiNode); |
| } |
| } |
| |
| Assert.assertTrue(graph.getNodes().filter(IsNullNode.class).count() == 1); |
| } catch (Throwable e) { |
| throw Debug.handle(e); |
| } |
| } |
| |
| private StructuredGraph compileTestSnippet(final String snippet) { |
| StructuredGraph graph = parseEager(snippet, AllowAssumptions.NO); |
| PhaseContext context = new PhaseContext(getProviders()); |
| CanonicalizerPhase canonicalizer = new CanonicalizerPhase(); |
| new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, context); |
| canonicalizer.apply(graph, context); |
| new PushThroughPiPhase().apply(graph); |
| canonicalizer.apply(graph, context); |
| |
| return graph; |
| } |
| } |