108 lines
4.3 KiB
Java
108 lines
4.3 KiB
Java
/*
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* Copyright (c) 2019 SAP SE. 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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* @bug 8220374 8241492
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* @summary C2: LoopStripMining doesn't strip as expected
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* @requires vm.compiler2.enabled
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*
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* @library /test/lib
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* @run driver compiler.loopstripmining.CheckLoopStripMining
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*/
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package compiler.loopstripmining;
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import jdk.test.lib.Utils;
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import jdk.test.lib.process.ProcessTools;
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public class CheckLoopStripMining {
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public static void main(String args[]) throws Exception {
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ProcessTools.executeTestJava("-XX:+UnlockDiagnosticVMOptions",
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"-XX:+SafepointTimeout",
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"-XX:+SafepointALot",
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"-XX:+AbortVMOnSafepointTimeout",
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"-XX:SafepointTimeoutDelay=" + Utils.adjustTimeout(300),
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"-XX:GuaranteedSafepointInterval=" + Utils.adjustTimeout(300),
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"-XX:-TieredCompilation",
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"-XX:+UseCountedLoopSafepoints",
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"-XX:LoopStripMiningIter=1000",
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"-XX:LoopUnrollLimit=0",
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"-XX:CompileCommand=compileonly,compiler.loopstripmining.CheckLoopStripMining$Test1::test_loop",
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"-Xcomp",
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Test1.class.getName())
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.shouldHaveExitValue(0)
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.stdoutShouldContain("sum: 715827882");
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ProcessTools.executeTestJava("-XX:+UnlockDiagnosticVMOptions",
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"-XX:+SafepointTimeout",
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"-XX:+SafepointALot",
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"-XX:+AbortVMOnSafepointTimeout",
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"-XX:SafepointTimeoutDelay=" + Utils.adjustTimeout(300),
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"-XX:GuaranteedSafepointInterval=" + Utils.adjustTimeout(300),
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"-XX:-TieredCompilation",
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"-XX:+UseCountedLoopSafepoints",
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"-XX:LoopStripMiningIter=1000",
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"-XX:LoopUnrollLimit=0",
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"-XX:-BackgroundCompilation",
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Test2.class.getName())
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.shouldHaveExitValue(0);
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}
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public static class Test1 {
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public static int test_loop(int x) {
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int sum = 0;
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if (x != 0) {
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for (int y = 1; y < Integer.MAX_VALUE; ++y) {
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if (y % x == 0) ++sum;
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}
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}
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return sum;
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}
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public static void main(String args[]) {
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int sum = test_loop(3);
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System.out.println("sum: " + sum);
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}
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}
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public static class Test2 {
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public static int test_loop(int start, int stop) {
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int sum = 0;
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for (int x = start; x < stop; x++) {
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sum += x;
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}
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return sum;
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}
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public static void main(String args[]) {
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for (int i = 0; i < 20_000; i++) {
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test_loop(0, 1);
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}
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test_loop(Integer.MIN_VALUE, 0);
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test_loop(-1, Integer.MAX_VALUE);
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test_loop(Integer.MIN_VALUE, Integer.MAX_VALUE);
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}
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}
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}
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