1833584f92
Strengthened asserts in locate_pre_from_main() and added a check for is_main_no_pre_loop(). Reviewed-by: kvn, vlivanov
76 lines
2.7 KiB
Java
76 lines
2.7 KiB
Java
/*
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* Copyright (c) 2019, 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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/**
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* @test
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* @bug 8233529
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* @summary Verify that correct loops are selected when trying to remove main/post.
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* @run main/othervm -XX:-TieredCompilation -Xbatch
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* -XX:CompileCommand=compileonly,compiler.loopopts.TestRemoveMainPostLoops::test
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* compiler.loopopts.TestRemoveMainPostLoops
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*/
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package compiler.loopopts;
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public class TestRemoveMainPostLoops {
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static int cnt1 = 0;
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int cnt2 = 0;
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void testCallee() {
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// (5) Only main and post loops are created (no pre loop -> "PeelMainPost") and main is unrolled.
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for (int i = 0; i < 100; ++i) {
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// (4) Inner loop is fully unrolled and removed.
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for (int j = 0; j < 10; ++j) {
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cnt1 += j;
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}
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}
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}
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void test() {
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for (int i = 0; i < 10_000; ++i) {
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// (0) testCallee method is inlined
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testCallee();
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cnt2 = 0;
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// (1) OSR compilation is triggered in this loop.
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// (2) Pre-/main-/post loops are created.
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// (3) Main and post loops found empty and removed.
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// (6) Pre loop is found empty, attempt to remove main and post loop then incorrectly selects main from (5).
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for (int j = 0; j < 10; ++j) {
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cnt2 = cnt1 + j;
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}
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}
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}
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public static void main(String[] strArr) {
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TestRemoveMainPostLoops test = new TestRemoveMainPostLoops();
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for (int i = 0; i < 100; i++) {
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cnt1 = 0;
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test.cnt2 = 0;
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test.test();
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if (cnt1 != 45000000 || test.cnt2 != 45000009) {
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throw new RuntimeException("Incorrect result: " + cnt1 + " " + test.cnt2);
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}
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}
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}
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}
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