Mercurial > hg > graal-compiler
view graal/GraalCompiler/src/com/sun/c1x/ir/Op2.java @ 2509:16b9a8b5ad39
Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:50:44 +0200 |
parents | graal/Compiler/src/com/sun/c1x/ir/Op2.java@9ec15d6914ca |
children | 3e0e65161345 |
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/* * Copyright (c) 2009, 2011, 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.sun.c1x.ir; import com.sun.c1x.util.*; import com.sun.cri.bytecode.*; import com.sun.cri.ci.*; /** * The {@code Op2} class is the base of arithmetic and logic operations with two inputs. * * @author Ben L. Titzer */ public abstract class Op2 extends Instruction { /** * The opcode of this instruction. */ public final int opcode; Value x; Value y; /** * Creates a new Op2 instance. * @param kind the result type of this instruction * @param opcode the bytecode opcode * @param x the first input instruction * @param y the second input instruction */ public Op2(CiKind kind, int opcode, Value x, Value y) { super(kind); this.opcode = opcode; this.x = x; this.y = y; } /** * Gets the first input to this instruction. * @return the first input to this instruction */ public final Value x() { return x; } /** * Gets the second input to this instruction. * @return the second input to this instruction */ public final Value y() { return y; } /** * Swaps the operands of this instruction. This is only legal for commutative operations. */ public void swapOperands() { assert Bytecodes.isCommutative(opcode); Value t = x; x = y; y = t; } /** * Iterates over the inputs to this instruction. * @param closure the closure to apply to each input value */ @Override public void inputValuesDo(ValueClosure closure) { x = closure.apply(x); y = closure.apply(y); } @Override public int valueNumber() { return Util.hash2(opcode, x, y); } @Override public boolean valueEqual(Instruction i) { if (i instanceof Op2) { Op2 o = (Op2) i; return opcode == o.opcode && x == o.x && y == o.y; } return false; } }