| /* |
| * Copyright (c) 2017, 2017, 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 java.lang.reflect.Field; |
| |
| import org.graalvm.compiler.core.common.GraalOptions; |
| import org.graalvm.compiler.core.test.GraalCompilerTest; |
| import org.graalvm.compiler.nodes.StructuredGraph; |
| import org.graalvm.compiler.nodes.extended.RawLoadNode; |
| import org.graalvm.compiler.nodes.extended.RawStoreNode; |
| import org.graalvm.compiler.nodes.virtual.CommitAllocationNode; |
| import org.graalvm.compiler.phases.common.CanonicalizerPhase; |
| import org.graalvm.compiler.phases.common.inlining.InliningPhase; |
| import org.graalvm.compiler.phases.tiers.HighTierContext; |
| import org.graalvm.compiler.virtual.phases.ea.PartialEscapePhase; |
| import org.junit.Test; |
| |
| import sun.misc.Unsafe; |
| |
| public class TrufflePEATest extends GraalCompilerTest { |
| |
| /** |
| * This class mimics the behavior of {@code FrameWithoutBoxing}. |
| */ |
| static class Frame { |
| long[] primitiveLocals; |
| |
| Frame(int size) { |
| primitiveLocals = new long[size]; |
| } |
| } |
| |
| /** |
| * This class mimics the behavior of {@code DynamicObjectL6I6}. |
| */ |
| static class DynamicObject { |
| int primitiveField0; |
| int primitiveField1; |
| int primitiveField2; |
| } |
| |
| private static final long offsetLong1 = Unsafe.ARRAY_LONG_BASE_OFFSET + Unsafe.ARRAY_LONG_INDEX_SCALE * 1; |
| private static final long offsetLong2 = Unsafe.ARRAY_LONG_BASE_OFFSET + Unsafe.ARRAY_LONG_INDEX_SCALE * 2; |
| |
| private static final long primitiveField0Offset; |
| |
| static { |
| try { |
| Field primitiveField0 = DynamicObject.class.getDeclaredField("primitiveField0"); |
| long offset = UNSAFE.objectFieldOffset(primitiveField0); |
| if (offset % 8 == 0) { |
| primitiveField0Offset = offset; |
| } else { |
| Field primitiveField1 = DynamicObject.class.getDeclaredField("primitiveField1"); |
| offset = UNSAFE.objectFieldOffset(primitiveField1); |
| assert offset % 8 == 0; |
| primitiveField0Offset = offset; |
| } |
| } catch (NoSuchFieldException | SecurityException e) { |
| throw new AssertionError(e); |
| } |
| } |
| |
| public static int unsafeAccessToLongArray(int v, Frame frame) { |
| long[] array = frame.primitiveLocals; |
| int s = UNSAFE.getInt(array, offsetLong1); |
| UNSAFE.putInt(array, offsetLong1, v); |
| UNSAFE.putInt(array, offsetLong2, v); |
| return s + UNSAFE.getInt(array, offsetLong1) + UNSAFE.getInt(array, offsetLong2); |
| } |
| |
| @Test |
| public void testUnsafeAccessToLongArray() { |
| StructuredGraph graph = processMethod("unsafeAccessToLongArray"); |
| assertDeepEquals(1, graph.getNodes().filter(RawLoadNode.class).count()); |
| } |
| |
| /** |
| * The following value should be less than the default value of |
| * {@link GraalOptions#MaximumEscapeAnalysisArrayLength}. |
| */ |
| private static final int FRAME_SIZE = 16; |
| |
| public static long newFrame(long v) { |
| Frame frame = new Frame(FRAME_SIZE); |
| // Testing unsafe accesses with other kinds requires special handling of the initialized |
| // entry kind. |
| UNSAFE.putLong(frame.primitiveLocals, offsetLong1, v); |
| return UNSAFE.getLong(frame.primitiveLocals, offsetLong1); |
| } |
| |
| @Test |
| public void testNewFrame() { |
| StructuredGraph graph = processMethod("newFrame"); |
| assertDeepEquals(0, graph.getNodes().filter(CommitAllocationNode.class).count()); |
| assertDeepEquals(0, graph.getNodes().filter(RawLoadNode.class).count()); |
| assertDeepEquals(0, graph.getNodes().filter(RawStoreNode.class).count()); |
| } |
| |
| protected StructuredGraph processMethod(final String snippet) { |
| StructuredGraph graph = parseEager(snippet, StructuredGraph.AllowAssumptions.NO); |
| HighTierContext context = getDefaultHighTierContext(); |
| new InliningPhase(new CanonicalizerPhase()).apply(graph, context); |
| new PartialEscapePhase(true, true, new CanonicalizerPhase(), null, graph.getOptions()).apply(graph, context); |
| return graph; |
| } |
| |
| public static double accessDynamicObject(double v) { |
| DynamicObject obj = new DynamicObject(); |
| UNSAFE.putDouble(obj, primitiveField0Offset, v); |
| return UNSAFE.getDouble(obj, primitiveField0Offset); |
| } |
| |
| @Test |
| public void testAccessDynamicObject() { |
| StructuredGraph graph = processMethod("accessDynamicObject"); |
| assertDeepEquals(0, graph.getNodes().filter(CommitAllocationNode.class).count()); |
| assertDeepEquals(0, graph.getNodes().filter(RawLoadNode.class).count()); |
| assertDeepEquals(0, graph.getNodes().filter(RawStoreNode.class).count()); |
| } |
| |
| } |