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68 lines
2.5 KiB
Java
68 lines
2.5 KiB
Java
/*
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* Copyright (c) 2025, 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.loopopts.superword;
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import compiler.lib.ir_framework.*;
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/*
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* @test
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* @bug 8352587
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* @summary IR test to ensure that PeelMainPost cases does not get Multiversioned.
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* @library /test/lib /
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* @run driver compiler.loopopts.superword.TestPeelMainPostNoMultiversioning
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*/
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public class TestPeelMainPostNoMultiversioning {
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public static void main(String[] args) {
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TestFramework framework = new TestFramework(TestPeelMainPostNoMultiversioning.class);
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// No traps means we cannot use the predicates version for SuperWord / AutoVectorization,
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// and instead use multiversioning directly.
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framework.addFlags("-XX:-TieredCompilation", "-XX:PerMethodTrapLimit=0");
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framework.setDefaultWarmup(0); // simulates Xcomp
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framework.start();
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}
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public static long value = 1;
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public static long multiplicator = 3;
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@Test
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@IR(counts = {".*multiversion.*", "= 0"},
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phase = CompilePhase.PHASEIDEALLOOP1)
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@IR(counts = {".*multiversion.*", "= 0"},
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phase = CompilePhase.PHASEIDEALLOOP_ITERATIONS)
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@IR(counts = {".*multiversion.*", "= 0"},
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phase = CompilePhase.PRINT_IDEAL)
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// We are checking it for a few phases, just to make sure we are not seeing multiversioning
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// at any point.
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public static void test() {
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long x = value;
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long y = multiplicator;
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for (int i = 0; i < 10_000; i++) {
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x *= y; // No memory load/store -> PeelMainPost
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}
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value = x;
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}
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}
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