93 lines
2.9 KiB
Java
93 lines
2.9 KiB
Java
/*
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* Copyright (c) 2023, Oracle and/or its affiliates. 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 jdk.test.lib.Asserts;
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import compiler.lib.ir_framework.*;
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/*
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* @test
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* @bug 8320330
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* @summary Test that RShiftLNode optimizations are being performed as expected.
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* @library /test/lib /
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* @run driver compiler.c2.irTests.RShiftLNodeIdealizationTests
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*/
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public class RShiftLNodeIdealizationTests {
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public static void main(String[] args) {
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TestFramework.run();
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}
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@Run(test = { "test1", "test2", "test3", "test4" })
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public void runMethod() {
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long a = RunInfo.getRandom().nextLong();
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long b = RunInfo.getRandom().nextLong();
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long c = RunInfo.getRandom().nextLong();
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long d = RunInfo.getRandom().nextLong();
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long min = Long.MIN_VALUE;
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long max = Long.MAX_VALUE;
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assertResult(a, 0);
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assertResult(a, b);
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assertResult(b, a);
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assertResult(c, d);
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assertResult(d, c);
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assertResult(min, max);
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assertResult(max, min);
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assertResult(min, min);
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assertResult(max, max);
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}
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@DontCompile
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public void assertResult(long x, long y) {
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Asserts.assertEQ((x >> y) >= 0 ? 0L : 1L, test1(x, y));
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Asserts.assertEQ(((x & 127) >> y) >= 0 ? 0L : 1L, test2(x, y));
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Asserts.assertEQ(((-(x & 127) - 1) >> y) >= 0 ? 0L : 1L, test3(x, y));
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Asserts.assertEQ((x >> 62) > 4 ? 0L : 1L, test4(x, y));
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}
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@Test
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@IR(counts = { IRNode.RSHIFT, "1" })
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public long test1(long x, long y) {
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return (x >> y) >= 0 ? 0 : 1;
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}
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@Test
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@IR(failOn = { IRNode.RSHIFT })
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public long test2(long x, long y) {
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return ((x & 127) >> y) >= 0 ? 0L : 1L;
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}
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@Test
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@IR(failOn = { IRNode.RSHIFT })
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public long test3(long x, long y) {
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return ((-(x & 127) - 1) >> y) >= 0 ? 0L : 1L;
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}
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@Test
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@IR(failOn = { IRNode.RSHIFT })
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public long test4(long x, long y) {
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return (x >> 62) > 4 ? 0L : 1L;
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}
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}
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