109 lines
3.7 KiB
Java
109 lines
3.7 KiB
Java
/*
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* Copyright (c) 2021, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package compiler.c2.irTests;
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import compiler.lib.ir_framework.*;
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/*
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* @test
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* @bug 8277850
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* @summary C2: optimize mask checks in counted loops
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* @library /test/lib /
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* @run driver compiler.c2.irTests.TestShiftAndMask
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*/
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public class TestShiftAndMask {
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public static void main(String[] args) {
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TestFramework.run();
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}
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@Test
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@Arguments(Argument.RANDOM_EACH)
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@IR(failOn = { IRNode.AND_I, IRNode.LSHIFT_I })
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public static int shiftMaskInt(int i) {
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return (i << 2) & 3; // transformed to: return 0;
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}
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@Test
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@Arguments(Argument.RANDOM_EACH)
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@IR(failOn = { IRNode.AND_L, IRNode.LSHIFT_L })
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public static long shiftMaskLong(long i) {
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return (i << 2) & 3; // transformed to: return 0;
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}
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@Test
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@Arguments({Argument.RANDOM_EACH, Argument.RANDOM_EACH})
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@IR(counts = { IRNode.AND_I, "1" })
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@IR(failOn = { IRNode.ADD_I, IRNode.LSHIFT_I })
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public static int addShiftMaskInt(int i, int j) {
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return (j + (i << 2)) & 3; // transformed to: return j & 3;
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}
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@Test
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@Arguments({Argument.RANDOM_EACH, Argument.RANDOM_EACH})
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@IR(counts = { IRNode.AND_L, "1" })
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@IR(failOn = { IRNode.ADD_L, IRNode.LSHIFT_L })
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public static long addShiftMaskLong(long i, long j) {
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return (j + (i << 2)) & 3; // transformed to: return j & 3;
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}
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@Test
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@Arguments({Argument.RANDOM_EACH, Argument.RANDOM_EACH})
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@IR(failOn = { IRNode.AND_I, IRNode.ADD_I, IRNode.LSHIFT_I })
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public static int addShiftMaskInt2(int i, int j) {
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return ((j << 2) + (i << 2)) & 3; // transformed to: return 0;
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}
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@Test
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@Arguments({Argument.RANDOM_EACH, Argument.RANDOM_EACH})
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@IR(failOn = { IRNode.AND_L, IRNode.ADD_L, IRNode.LSHIFT_L })
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public static long addShiftMaskLong2(long i, long j) {
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return ((j << 2) + (i << 2)) & 3; // transformed to: return 0;
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}
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@Test
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@Arguments(Argument.RANDOM_EACH)
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@IR(failOn = { IRNode.AND_L, IRNode.LSHIFT_I })
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public static long shiftConvMask(int i) {
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return ((long)(i << 2)) & 3; // transformed to: return 0;
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}
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@Test
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@Arguments({Argument.RANDOM_EACH, Argument.RANDOM_EACH})
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@IR(counts = { IRNode.AND_L, "1" })
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@IR(failOn = { IRNode.ADD_L, IRNode.LSHIFT_I, IRNode.CONV_I2L })
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public static long addShiftConvMask(int i, long j) {
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return (j + (i << 2)) & 3; // transformed to: return j & 3;
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}
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@Test
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@Arguments({Argument.RANDOM_EACH, Argument.RANDOM_EACH})
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@IR(failOn = { IRNode.AND_L, IRNode.ADD_L, IRNode.LSHIFT_L })
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public static long addShiftConvMask2(int i, int j) {
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return (((long)(j << 2)) + ((long)(i << 2))) & 3; // transformed to: return 0;
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}
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}
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