Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/calc/IntegerAddNode.java @ 16897:f90dcdbbb75e
switched to using new NodeFieldIterator and NodeFieldIterable for traversing Node inputs and successors
changed Node fields to be protected or package-private (they can no longer be private)
generate isLeafNode() and isOptionalInput()
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Fri, 22 Aug 2014 15:56:51 +0200 |
parents | 06c15e88d383 |
children | 0fe4732e5181 |
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/* * Copyright (c) 2011, 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.nodes.calc; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.lir.gen.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; @NodeInfo(shortName = "+") public class IntegerAddNode extends IntegerArithmeticNode implements NarrowableArithmeticNode { public static IntegerAddNode create(ValueNode x, ValueNode y) { return new IntegerAddNodeGen(x, y); } public static Class<? extends IntegerAddNode> getGenClass() { return IntegerAddNodeGen.class; } protected IntegerAddNode(ValueNode x, ValueNode y) { super(StampTool.add(x.stamp(), y.stamp()), x, y); } @Override public boolean inferStamp() { return updateStamp(StampTool.add(getX().stamp(), getY().stamp())); } @Override public Constant evalConst(Constant... inputs) { assert inputs.length == 2; return Constant.forPrimitiveInt(PrimitiveStamp.getBits(stamp()), inputs[0].asLong() + inputs[1].asLong()); } @Override public ValueNode canonical(CanonicalizerTool tool, ValueNode forX, ValueNode forY) { if (forX.isConstant() && !forY.isConstant()) { return IntegerAddNode.create(forY, forX); } if (forX instanceof IntegerSubNode) { IntegerSubNode sub = (IntegerSubNode) forX; if (sub.getY() == forY) { // (a - b) + b return sub.getX(); } } if (forY instanceof IntegerSubNode) { IntegerSubNode sub = (IntegerSubNode) forY; if (sub.getY() == forX) { // b + (a - b) return sub.getX(); } } if (forX.isConstant()) { return ConstantNode.forPrimitive(evalConst(forX.asConstant(), forY.asConstant())); } else if (forY.isConstant()) { long c = forY.asConstant().asLong(); if (c == 0) { return forX; } // canonicalize expressions like "(a + 1) + 2" BinaryNode reassociated = BinaryNode.reassociate(this, ValueNode.isConstantPredicate(), forX, forY); if (reassociated != this) { return reassociated; } } if (forX instanceof NegateNode) { return IntegerArithmeticNode.sub(forY, ((NegateNode) forX).getValue()); } else if (forY instanceof NegateNode) { return IntegerArithmeticNode.sub(forX, ((NegateNode) forY).getValue()); } return this; } @Override public void generate(NodeMappableLIRBuilder builder, ArithmeticLIRGenerator gen) { Value op1 = builder.operand(getX()); assert op1 != null : getX() + ", this=" + this; Value op2 = builder.operand(getY()); if (!getY().isConstant() && !FloatAddNode.livesLonger(this, getY(), builder)) { Value op = op1; op1 = op2; op2 = op; } builder.setResult(this, gen.emitAdd(op1, op2)); } }