94 lines
2.4 KiB
Java
94 lines
2.4 KiB
Java
/*
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* Copyright (c) 2021, 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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/**
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* @test
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* @bug 8276455
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* @summary Test C2 iterative Escape Analysis
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* @library /test/lib /
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*
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* @requires vm.flagless
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* @requires vm.compiler2.enabled & vm.debug == true
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*
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* @run driver TestIterativeEA
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*/
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.process.OutputAnalyzer;
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public class TestIterativeEA {
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public static void main(String[] args) throws Exception {
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ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
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"-server", "-XX:-TieredCompilation", "-Xbatch", "-XX:+PrintEliminateAllocations",
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Launcher.class.getName());
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OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
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System.out.println(analyzer.getOutput());
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analyzer.shouldHaveExitValue(0);
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analyzer.shouldContain("++++ Eliminated: 26 Allocate");
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analyzer.shouldContain("++++ Eliminated: 48 Allocate");
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analyzer.shouldContain("++++ Eliminated: 78 Allocate");
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}
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static class A {
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int i;
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public A(int i) {
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this.i = i;
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}
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}
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static class B {
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A a;
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public B(A a) {
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this.a = a;
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}
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}
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static class C {
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B b;
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public C(B b) {
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this.b = b;
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}
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}
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static int test(int i) {
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C c = new C(new B(new A(i)));
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return c.b.a.i;
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}
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static class Launcher {
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public static void main(String[] args) {
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for (int i = 0; i < 12000; ++i) {
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int j = test(i);
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}
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}
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}
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}
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