Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/IntegerSubstitutions.java @ 16165:0244e5bdddc1
intrinsify unsigned operations in java.lang.Integer/Long
author | Lukas Stadler <lukas.stadler@oracle.com> |
---|---|
date | Mon, 23 Jun 2014 17:45:34 +0200 |
parents | 5d3fa6f949fb |
children | b558af6ff4bc |
line wrap: on
line source
/* * Copyright (c) 2012, 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.replacements; import com.oracle.graal.api.meta.*; import com.oracle.graal.api.replacements.*; import com.oracle.graal.nodes.calc.*; import com.oracle.graal.replacements.nodes.*; @ClassSubstitution(Integer.class) public class IntegerSubstitutions { @MethodSubstitution public static int reverseBytes(int i) { return ReverseBytesNode.reverse(i); } @MethodSubstitution public static int numberOfLeadingZeros(int i) { if (i == 0) { return 32; } return 31 - BitScanReverseNode.scan(i); } @MethodSubstitution public static int numberOfTrailingZeros(int i) { if (i == 0) { return 32; } return BitScanForwardNode.scan(i); } @MethodSubstitution public static int bitCount(int i) { return BitCountNode.bitCount(i); } @MethodSubstitution public static int divideUnsigned(int dividend, int divisor) { return UnsignedDivNode.unsignedDivide(Kind.Int, dividend, divisor); } @MethodSubstitution public static int remainderUnsigned(int dividend, int divisor) { return UnsignedRemNode.unsignedRemainder(Kind.Int, dividend, divisor); } }