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view graal/com.oracle.graal.hotspot.amd64.test/src/com/oracle/graal/hotspot/amd64/test/DataPatchInConstantsTest.java @ 20023:cef214c6d74a
extract methods to avoid code duplication
author | Christian Wirth <christian.wirth@oracle.com> |
---|---|
date | Tue, 24 Mar 2015 17:33:15 +0100 |
parents | 8fc336a04d77 |
children | 1da7aef31a08 |
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/* * Copyright (c) 2014, 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 com.oracle.graal.hotspot.amd64.test; import static com.oracle.graal.api.code.ValueUtil.*; import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*; import org.junit.*; import com.oracle.graal.amd64.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.api.replacements.*; import com.oracle.graal.asm.amd64.*; import com.oracle.graal.graph.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.hotspot.nodes.*; import com.oracle.graal.hotspot.nodes.CompressionNode.CompressionOp; import com.oracle.graal.hotspot.nodes.type.*; import com.oracle.graal.hotspot.test.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.asm.*; import com.oracle.graal.lir.gen.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; public class DataPatchInConstantsTest extends HotSpotGraalCompilerTest { @Before public void checkAMD64() { Assume.assumeTrue("skipping AMD64 specific test", getTarget().arch instanceof AMD64); } private static final Object object = new Object() { @Override public String toString() { return "testObject"; } }; private static Object loadThroughPatch(Object obj) { return obj; } public static Object oopSnippet() { Object patch = loadThroughPatch(object); if (object != patch) { return "invalid patch"; } System.gc(); patch = loadThroughPatch(object); if (object != patch) { return "failed after gc"; } return patch; } @Test public void oopTest() { test("oopSnippet"); } private static Object loadThroughCompressedPatch(Object obj) { return obj; } public static Object narrowOopSnippet() { Object patch = loadThroughCompressedPatch(object); if (object != patch) { return "invalid patch"; } System.gc(); patch = loadThroughCompressedPatch(object); if (object != patch) { return "failed after gc"; } return patch; } @Test public void narrowOopTest() { Assume.assumeTrue("skipping narrow oop data patch test", config.useCompressedOops); test("narrowOopSnippet"); } public static Object compareSnippet() { Object uncompressed = loadThroughPatch(object); Object compressed = loadThroughCompressedPatch(object); if (object != uncompressed) { return "uncompressed failed"; } if (object != compressed) { return "compressed failed"; } if (uncompressed != compressed) { return "uncompressed != compressed"; } return object; } @Test public void compareTest() { Assume.assumeTrue("skipping narrow oop data patch test", config.useCompressedOops); test("compareSnippet"); } private static final HotSpotVMConfig config = HotSpotGraalRuntime.runtime().getConfig(); private static boolean initReplacements = false; @Before public void initReplacements() { if (!initReplacements) { getReplacements().registerSubstitutions(DataPatchInConstantsTest.class, DataPatchInConstantsTestSubstitutions.class); initReplacements = true; } } @ClassSubstitution(DataPatchInConstantsTest.class) private static class DataPatchInConstantsTestSubstitutions { @MethodSubstitution public static Object loadThroughPatch(Object obj) { return LoadThroughPatchNode.load(obj); } @MethodSubstitution public static Object loadThroughCompressedPatch(Object obj) { Object compressed = CompressionNode.compression(CompressionOp.Compress, obj, config.getOopEncoding()); Object patch = LoadThroughPatchNode.load(compressed); return CompressionNode.compression(CompressionOp.Uncompress, patch, config.getOopEncoding()); } } @NodeInfo private static final class LoadThroughPatchNode extends FixedWithNextNode implements LIRLowerable { public static final NodeClass<LoadThroughPatchNode> TYPE = NodeClass.create(LoadThroughPatchNode.class); @Input protected ValueNode input; public LoadThroughPatchNode(ValueNode input) { super(TYPE, input.stamp()); this.input = input; } public void generate(NodeLIRBuilderTool generator) { assert input.isConstant(); LIRGeneratorTool gen = generator.getLIRGeneratorTool(); Variable ret = gen.newVariable(gen.getLIRKind(stamp())); gen.append(new LoadThroughPatchOp(input.asConstant(), stamp() instanceof NarrowOopStamp, ret)); generator.setResult(this, ret); } @NodeIntrinsic public static native Object load(Object obj); } private static final class LoadThroughPatchOp extends LIRInstruction { public static final LIRInstructionClass<LoadThroughPatchOp> TYPE = LIRInstructionClass.create(LoadThroughPatchOp.class); final Constant c; final boolean compressed; @Def({REG}) AllocatableValue result; LoadThroughPatchOp(Constant c, boolean compressed, AllocatableValue result) { super(TYPE); this.c = c; this.compressed = compressed; this.result = result; } @Override public void emitCode(CompilationResultBuilder crb) { AMD64Address address = (AMD64Address) crb.recordDataReferenceInCode(c, compressed ? 4 : 8); AMD64MacroAssembler asm = (AMD64MacroAssembler) crb.asm; if (compressed) { asm.movl(asRegister(result), address); } else { asm.movq(asRegister(result), address); } } } }