Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/calc/UnsignedRemNode.java @ 16218:c3260b05fd26
rename x() to getX() and y() to getY() in FixedBinaryNode
author | Lukas Stadler <lukas.stadler@oracle.com> |
---|---|
date | Wed, 25 Jun 2014 16:55:00 +0200 |
parents | 561070049e73 |
children | 1434b835f0d3 |
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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.code.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; @NodeInfo(shortName = "|%|") public class UnsignedRemNode extends FixedBinaryNode implements Canonicalizable, Lowerable, LIRLowerable { public UnsignedRemNode(ValueNode x, ValueNode y) { super(x.stamp().unrestricted(), x, y); } @Override public Node canonical(CanonicalizerTool tool) { if (getX().isConstant() && getY().isConstant()) { long yConst = getY().asConstant().asLong(); if (yConst == 0) { return this; // this will trap, cannot canonicalize } return ConstantNode.forIntegerStamp(stamp(), UnsignedMath.remainder(getX().asConstant().asLong(), yConst), graph()); } else if (getY().isConstant()) { long c = getY().asConstant().asLong(); if (c == 1) { return ConstantNode.forIntegerStamp(stamp(), 0); } else if (CodeUtil.isPowerOf2(c)) { return new AndNode(getX(), ConstantNode.forIntegerStamp(stamp(), c - 1)); } } return this; } @Override public void lower(LoweringTool tool) { tool.getLowerer().lower(this, tool); } @Override public void generate(NodeLIRBuilderTool gen) { gen.setResult(this, gen.getLIRGeneratorTool().emitURem(gen.operand(getX()), gen.operand(getY()), gen.state(this))); } @Override public boolean canDeoptimize() { return !(getY().stamp() instanceof IntegerStamp) || ((IntegerStamp) getY().stamp()).contains(0); } @NodeIntrinsic public static native int unsignedRemainder(int a, int b); @NodeIntrinsic public static native long unsignedRemainder(long a, long b); }