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71 lines
2.0 KiB
Java
71 lines
2.0 KiB
Java
/*
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* Copyright (c) 2024 IBM Corporation. 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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/*
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* @test
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* @author Amit Kumar
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* @bug 8344026
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* @library /test/lib
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* @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -Xcomp -Xbatch -XX:TieredStopAtLevel=1 compiler.c1.StrengthReduceCheck
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*/
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package compiler.c1;
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import jdk.test.lib.Asserts;
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public class StrengthReduceCheck {
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static int test1(int x) {
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// Multiply by 2 ^ 30 - 1
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x = x * 1073741823;
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return x;
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}
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static int test2(int x) {
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// Multiply by 2 ^ 30 + 1
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x = x * 1073741825;
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return x;
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}
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static int test3(int x) {
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// Multiply by INT_MIN
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x = x * -2147483648;
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return x;
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}
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static int test4(int x) {
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x = x * -1;
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return x;
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}
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public static void main(String[] args) {
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for (int i =0; i < 1000; ++i) {
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Asserts.assertEQ(test1(26071999), -1099813823);
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Asserts.assertEQ(test2(26071999), -1047669825);
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Asserts.assertEQ(test3(26071999), -2147483648);
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Asserts.assertEQ(test4(26071999), -26071999);
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}
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}
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}
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