Mercurial > hg > graal-compiler
view graal/GraalCompiler/src/com/sun/c1x/ir/ArithmeticOp.java @ 2610:39aa89baa165
cleanup: FrameState copy methods, ImmutableFrameState
author | Lukas Stadler <lukas.stadler@jku.at> |
---|---|
date | Fri, 06 May 2011 13:03:33 +0200 |
parents | 51ebe5f0516f |
children | 3558ca7088c0 |
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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.oracle.graal.graph.*; import com.sun.c1x.debug.*; import com.sun.c1x.value.*; import com.sun.cri.bytecode.*; import com.sun.cri.ci.*; /** * The {@code ArithmeticOp} class represents arithmetic operations such as addition, subtraction, etc. */ public final class ArithmeticOp extends Op2 { private static final int INPUT_COUNT = 0; private static final int SUCCESSOR_COUNT = 0; private final FrameState stateBefore; private final boolean isStrictFP; /** * Creates a new arithmetic operation. * @param opcode the bytecode opcode * @param kind the result kind of the operation * @param x the first input instruction * @param y the second input instruction * @param isStrictFP indicates this operation has strict rounding semantics * @param stateBefore the state for instructions that may trap */ public ArithmeticOp(int opcode, CiKind kind, Value x, Value y, boolean isStrictFP, FrameState stateBefore, Graph graph) { super(kind, opcode, x, y, INPUT_COUNT, SUCCESSOR_COUNT, graph); this.isStrictFP = isStrictFP; this.stateBefore = stateBefore; } @Override public FrameState stateBefore() { return stateBefore; } /** * Checks whether this instruction has strict fp semantics. * @return {@code true} if this instruction has strict fp semantics */ public boolean isStrictFP() { return isStrictFP; } /** * Checks whether this instruction can cause a trap. For arithmetic operations, * only division and remainder operations can cause traps. * @return {@code true} if this instruction can cause a trap */ @Override public boolean canTrap() { return stateBefore != null; } @Override public void accept(ValueVisitor v) { v.visitArithmeticOp(this); } public boolean isCommutative() { return Bytecodes.isCommutative(opcode); } @Override public void print(LogStream out) { out.print(x()).print(' ').print(Bytecodes.operator(opcode)).print(' ').print(y()); } }