Mercurial > hg > truffle
changeset 5112:88c339d1d617
added EndlessRecompilationTest
author | Christian Haeubl <christian.haeubl@oracle.com> |
---|---|
date | Thu, 15 Mar 2012 17:01:03 -0700 |
parents | 422c979ff392 |
children | e6a45067e42c |
files | graal/com.oracle.graal.tests/src/com/oracle/graal/compiler/tests/EndlessRecompilationTest.java |
diffstat | 1 files changed, 151 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.graal.tests/src/com/oracle/graal/compiler/tests/EndlessRecompilationTest.java Thu Mar 15 17:01:03 2012 -0700 @@ -0,0 +1,151 @@ +/* + * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package com.oracle.graal.compiler.tests; + +import java.util.*; + +import org.junit.*; + + +public class EndlessRecompilationTest { + private static final int COMPILATION_ITERATIONS = 5 * 1000; + private static final int WORK_ITERATIONS = 1000 * 1000 * 1000; + private static final int COMPILATION_WAIT_TIME_MS = 2000; + private static final int MAX_WORK_TIME_MS = 5 * 1000; + + @Test + public void test() { + int[] data = new int[] {1}; + Worker[] workers = new Worker[] {new A(), new B()}; + Worker violation = new C(); + + sleep(); + + System.out.println("Compiling all Worker.doWork() methods"); + for (int i = 0; i < 2 * COMPILATION_ITERATIONS; i++) { + workers[i % workers.length].doWork(data); + } + sleep(); + + System.out.println("Compiling delegateWork() with all path but without any inlining because SmallCompiledCodeSize prevents inlining"); + for (int i = 0; i < COMPILATION_ITERATIONS; i++) { + delegateWork(workers[i % workers.length], data); + } + sleep(); + + System.out.println("Warmup for delegateWorkFurther()"); + for (int i = 0; i < COMPILATION_ITERATIONS / 2; i++) { + delegateWorkFurther(workers[i % workers.length], data); + } + sleep(); + + System.out.println("Deoptimize all compiled Worker.doWork() methods"); + for (int i = 0; i < workers.length; i++) { + workers[i].doWork(null); + } + sleep(); + + System.out.println("Compile delegateWorkFurther() and do a polymorphic inlining because SmallCompiledCodeSize no longer prevents inlining"); + for (int i = 0; i < COMPILATION_ITERATIONS / 2; i++) { + delegateWorkFurther(workers[i % workers.length], data); + } + sleep(); + + System.out.println("Violating polymorphic inlining in delegateWorkFurther() and deoptimizing to method entry of delegateWorkFurther(). " + + "Interpreter will reexecute invocation of delegateWork(), which does not contain the inlining and won't deoptimize"); + long start = System.currentTimeMillis(); + for (int i = 0; i < WORK_ITERATIONS; i++) { + delegateWorkFurther(violation, data); + } + long requiredTime = System.currentTimeMillis() - start; + System.out.println(requiredTime); + } + + private static int delegateWorkFurther(Worker w, int[] data) { + return delegateWork(w, data); + } + + private static int delegateWork(Worker w, int[] data) { + return w.doWork(data); + } + + private static void sleep() { + try { + Thread.sleep(COMPILATION_WAIT_TIME_MS); + } catch (InterruptedException e) { + e.printStackTrace(); + } + } + + private interface Worker { + int doWork(int[] data); + } + + private static class A implements Worker { + public int doWork(int[] data) { + if (data == null) { + return 0; + } else { + int result = 0; + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + return result; + } + } + } + + private static class B implements Worker { + public int doWork(int[] data) { + if (data == null) { + return 0; + } else { + int result = 0; + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + result += Arrays.binarySearch(data, 0); + return result; + } + } + } + + private static class C implements Worker { + public int doWork(int[] data) { + return 0; + } + } +}