| /* |
| * Copyright (c) 2015, 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.hotspot.amd64; |
| |
| import org.graalvm.compiler.asm.amd64.AMD64Address; |
| import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler; |
| import org.graalvm.compiler.lir.LIRInstructionClass; |
| import org.graalvm.compiler.lir.LabelRef; |
| import org.graalvm.compiler.lir.SwitchStrategy; |
| import org.graalvm.compiler.lir.amd64.AMD64ControlFlow; |
| import org.graalvm.compiler.lir.asm.CompilationResultBuilder; |
| |
| import jdk.vm.ci.code.Register; |
| import jdk.vm.ci.code.ValueUtil; |
| import jdk.vm.ci.hotspot.HotSpotMetaspaceConstant; |
| import jdk.vm.ci.meta.Constant; |
| import jdk.vm.ci.meta.Value; |
| |
| final class AMD64HotSpotStrategySwitchOp extends AMD64ControlFlow.StrategySwitchOp { |
| public static final LIRInstructionClass<AMD64HotSpotStrategySwitchOp> TYPE = LIRInstructionClass.create(AMD64HotSpotStrategySwitchOp.class); |
| |
| AMD64HotSpotStrategySwitchOp(SwitchStrategy strategy, LabelRef[] keyTargets, LabelRef defaultTarget, Value key, Value scratch) { |
| super(TYPE, strategy, keyTargets, defaultTarget, key, scratch); |
| } |
| |
| @Override |
| public void emitCode(final CompilationResultBuilder crb, final AMD64MacroAssembler masm) { |
| strategy.run(new HotSpotSwitchClosure(ValueUtil.asRegister(key), crb, masm)); |
| } |
| |
| public class HotSpotSwitchClosure extends SwitchClosure { |
| |
| protected HotSpotSwitchClosure(Register keyRegister, CompilationResultBuilder crb, AMD64MacroAssembler masm) { |
| super(keyRegister, crb, masm); |
| } |
| |
| @Override |
| protected void emitComparison(Constant c) { |
| if (c instanceof HotSpotMetaspaceConstant) { |
| HotSpotMetaspaceConstant meta = (HotSpotMetaspaceConstant) c; |
| if (meta.isCompressed()) { |
| crb.recordInlineDataInCode(meta); |
| masm.cmpl(keyRegister, 0xDEADDEAD); |
| } else { |
| AMD64Address addr = (AMD64Address) crb.recordDataReferenceInCode(meta, 8); |
| masm.cmpq(keyRegister, addr); |
| } |
| } else { |
| super.emitComparison(c); |
| } |
| } |
| } |
| } |