141 lines
3.8 KiB
Java
141 lines
3.8 KiB
Java
/*
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* Copyright (c) 2022, Red Hat, Inc. 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 compiler.lib.ir_framework.*;
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/*
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* @test
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* @bug 8297724
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* @library /test/lib /
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* @requires vm.compiler2.enabled
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* @run driver compiler.c2.irTests.TestLSMMissedEmptyLoop
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*/
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public class TestLSMMissedEmptyLoop {
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public static void main(String[] args) {
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TestFramework.runWithFlags("-XX:LoopMaxUnroll=0");
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TestFramework.runWithFlags("-XX:-UseCountedLoopSafepoints", "-XX:LoopMaxUnroll=0");
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TestFramework.run();
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TestFramework.runWithFlags("-XX:-UseCountedLoopSafepoints");
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}
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static double doubleField;
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@ForceInline
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public static void testHelper(int i, double d) {
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if (i != 42) {
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doubleField = d;
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}
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}
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@Test
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@IR(failOn = {IRNode.COUNTED_LOOP, IRNode.LOOP })
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public static void test1() {
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double d = 1;
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for (int i = 0; i < 1000; i++) {
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d = d * 2;
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}
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int i = 0;
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for (i = 0; i < 42; i++) {
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}
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testHelper(i, d);
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}
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@Run(test = "test1")
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private void test1_runner() {
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testHelper(-42, 42);
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test1();
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}
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@Test
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@IR(applyIf = { "LoopStripMiningIter", "0" }, failOn = {IRNode.COUNTED_LOOP, IRNode.LOOP })
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@IR(applyIf = { "LoopStripMiningIter", "> 0" }, counts = {IRNode.COUNTED_LOOP, ">= 2" })
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public static void test2() {
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double d = 1;
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for (int j = 0; j < 10; j++) {
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for (int i = 0; i < 1000; i++) {
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d = d * 2;
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}
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}
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int i = 0;
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for (i = 0; i < 42; i++) {
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}
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testHelper(i, d);
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}
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@Run(test = "test2")
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private void test2_runner() {
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testHelper(-42, 42);
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test2();
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}
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@Test
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@IR(failOn = {IRNode.COUNTED_LOOP, IRNode.LOOP })
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public static void test3() {
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double d = 1;
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for (int i = 0; i < 1000; i++) {
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d = d * 2;
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}
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for (int i = 0; i < 1000; i++) {
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d = d * 2;
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}
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int i = 0;
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for (i = 0; i < 42; i++) {
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}
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testHelper(i, d);
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}
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@Run(test = "test3")
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private void test3_runner() {
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testHelper(-42, 42);
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test1();
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}
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@Test
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@IR(applyIf = { "LoopStripMiningIter", "0" }, failOn = {IRNode.COUNTED_LOOP, IRNode.LOOP })
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@IR(applyIf = { "LoopStripMiningIter", "> 0" }, counts = {IRNode.COUNTED_LOOP, ">= 3" })
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public static void test4() {
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double d = 1;
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for (int j = 0; j < 10; j++) {
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for (int i = 0; i < 1000; i++) {
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d = d * 2;
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}
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for (int i = 0; i < 1000; i++) {
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d = d * 2;
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}
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}
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int i = 0;
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for (i = 0; i < 42; i++) {
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}
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testHelper(i, d);
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}
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@Run(test = "test4")
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private void test4_runner() {
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testHelper(-42, 42);
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test4();
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}
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}
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