91 lines
2.6 KiB
Java
91 lines
2.6 KiB
Java
/*
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* Copyright (c) 2021, Alibaba Group Holding Limited. 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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/*
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* @test
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* @key randomness
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* @bug 8273021
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* @summary C2: Improve Add and Xor ideal optimizations
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* @library /test/lib
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* @run main/othervm -XX:-TieredCompilation
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* -XX:CompileCommand=dontinline,compiler.c2.TestAddXorIdeal::test*
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* compiler.c2.TestAddXorIdeal
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*/
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package compiler.c2;
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import java.util.Random;
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import jdk.test.lib.Asserts;
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import jdk.test.lib.Utils;
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public class TestAddXorIdeal {
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public static int test1(int x) {
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return ~x + 1;
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}
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public static int test2(int x) {
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return ~(x - 1);
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}
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public static long test3(long x) {
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return ~x + 1L;
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}
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public static long test4(long x) {
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return ~(x - 1L);
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}
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public static int test5(int x) {
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return 1 + ~x;
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}
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public static int test6(int x) {
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return ~(-1 + x);
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}
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public static long test7(long x) {
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return 1L + ~x;
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}
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public static long test8(long x) {
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return ~(-1L + x);
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}
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public static void main(String... args) {
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Random random = Utils.getRandomInstance();
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for (int i = 0; i < 50_000; i++) {
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int a = random.nextInt();
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long b = random.nextLong();
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Asserts.assertTrue(test1(a) == -a);
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Asserts.assertTrue(test2(a) == -a);
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Asserts.assertTrue(test3(b) == -b);
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Asserts.assertTrue(test4(b) == -b);
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Asserts.assertTrue(test5(a) == -a);
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Asserts.assertTrue(test6(a) == -a);
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Asserts.assertTrue(test7(b) == -b);
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Asserts.assertTrue(test8(b) == -b);
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}
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}
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} |