Mercurial > hg > graal-compiler
view graal/com.oracle.graal.lir/src/com/oracle/graal/lir/ValuePosition.java @ 16770:8341b061e496
Clone CompositeValue in ValuePosition.set().
author | Josef Eisl <josef.eisl@jku.at> |
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date | Mon, 11 Aug 2014 18:07:31 +0200 |
parents | b2b362cc1a9f |
children | aef31f60e970 |
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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.lir; import java.util.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.lir.LIRInstruction.*; /** * Describes an operand slot for a {@link LIRInstructionClass}. */ public final class ValuePosition { private final OperandMode mode; private final int index; private final int subIndex; private final ValuePosition outerPosition; public static final int NO_SUBINDEX = -1; public static final ValuePosition ROOT_VALUE_POSITION = null; public ValuePosition(OperandMode mode, int index, int subIndex, ValuePosition outerPosition) { this.mode = mode; this.index = index; this.subIndex = subIndex; this.outerPosition = outerPosition; } public boolean isCompositePosition() { return outerPosition != ROOT_VALUE_POSITION; } public Value get(LIRInstruction inst) { if (isCompositePosition()) { CompositeValue compValue = (CompositeValue) outerPosition.get(inst); return compValue.getValueClass().getValue(compValue, this); } return inst.getLIRInstructionClass().getValue(inst, this); } public EnumSet<OperandFlag> getFlags(LIRInstruction inst) { if (isCompositePosition()) { CompositeValue compValue = (CompositeValue) outerPosition.get(inst); return compValue.getValueClass().getFlags(this); } return inst.getLIRInstructionClass().getFlags(this); } public void set(LIRInstruction inst, Value value) { if (isCompositePosition()) { CompositeValue compValue = (CompositeValue) outerPosition.get(inst); CompositeValue newCompValue = compValue.getValueClass().createUpdatedValue(compValue, this, value); outerPosition.set(inst, newCompValue); } else { inst.getLIRInstructionClass().setValue(inst, this, value); } } public int getSubIndex() { return subIndex; } public int getIndex() { return index; } public OperandMode getMode() { return mode; } public ValuePosition getSuperPosition() { return outerPosition; } @Override public String toString() { if (outerPosition == ROOT_VALUE_POSITION) { return mode.toString() + "(" + index + (subIndex < 0 ? "" : "/" + subIndex) + ")"; } return outerPosition.toString() + "[" + mode.toString() + "(" + index + (subIndex < 0 ? "" : "/" + subIndex) + ")]"; } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + index; result = prime * result + ((mode == null) ? 0 : mode.hashCode()); result = prime * result + subIndex; result = prime * result + ((outerPosition == null) ? 0 : outerPosition.hashCode()); return result; } @Override public boolean equals(Object obj) { if (this == obj) { return true; } if (obj == null) { return false; } if (getClass() != obj.getClass()) { return false; } ValuePosition other = (ValuePosition) obj; if (index != other.index) { return false; } if (mode != other.mode) { return false; } if (subIndex != other.subIndex) { return false; } if (outerPosition == null) { if (other.outerPosition != null) { return false; } } else if (!outerPosition.equals(other.outerPosition)) { return false; } return true; } }