Mercurial > hg > truffle
view graal/com.oracle.graal.lir/src/com/oracle/graal/lir/CompositeValue.java @ 21554:b1530a6cce8c
renamed com.oracle.graal.[debug|options|hotspotvmconfig]* modules to com.oracle.jvmci.[debug|options|hotspotvmconfig]* modules (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Tue, 26 May 2015 23:21:15 +0200 |
parents | 082417ac43e4 |
children | 48c1ebd24120 |
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/* * Copyright (c) 2013, 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.lir; import java.lang.annotation.*; import java.util.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.lir.LIRInstruction.OperandFlag; import com.oracle.graal.lir.LIRInstruction.OperandMode; import com.oracle.jvmci.debug.*; /** * Base class to represent values that need to be stored in more than one register. This is mainly * intended to support addresses and not general arbitrary nesting of composite values. Because of * the possibility of sharing of CompositeValues they should be immutable. */ public abstract class CompositeValue extends AbstractValue { @Retention(RetentionPolicy.RUNTIME) @Target(ElementType.FIELD) public static @interface Component { OperandFlag[] value() default OperandFlag.REG; } private static final DebugMetric COMPOSITE_VALUE_COUNT = Debug.metric("CompositeValues"); public CompositeValue(LIRKind kind) { super(kind); COMPOSITE_VALUE_COUNT.increment(); assert CompositeValueClass.get(getClass()) != null; } /** * Invoke {@code proc} on each {@link Value} element of this {@link CompositeValue}. If * {@code proc} replaces any value then a new CompositeValue should be returned. * * @param inst * @param mode * @param proc * @return the original CompositeValue or a copy with any modified values */ public abstract CompositeValue forEachComponent(LIRInstruction inst, OperandMode mode, InstructionValueProcedure proc); /** * A helper method to visit {@link Value}[] ensuring that a copy of the array is made if it's * needed. * * @param inst * @param values * @param mode * @param proc * @param flags * @return the original {@code values} array or a copy if values changed */ protected Value[] visitValueArray(LIRInstruction inst, Value[] values, OperandMode mode, InstructionValueProcedure proc, EnumSet<OperandFlag> flags) { Value[] newValues = null; for (int i = 0; i < values.length; i++) { Value value = values[i]; Value newValue = proc.doValue(inst, value, mode, flags); if (!value.identityEquals(newValue)) { if (newValues == null) { newValues = values.clone(); } newValues[i] = value; } } return newValues != null ? newValues : values; } protected abstract void forEachComponent(LIRInstruction inst, OperandMode mode, InstructionValueConsumer proc); @Override public String toString() { return CompositeValueClass.format(this); } @Override public int hashCode() { return 53 * super.hashCode(); } @Override public boolean equals(Object obj) { if (obj instanceof CompositeValue) { CompositeValue other = (CompositeValue) obj; return super.equals(other); } return false; } }