Mercurial > hg > graal-jvmci-8
view test/compiler/floatingpoint/TestPow2.java @ 24198:678f11cc769e jdk8u141-b03
8173207: Upgrade compression library
Reviewed-by: sherman, jeff
author | coffeys |
---|---|
date | Thu, 16 Mar 2017 17:38:32 +0000 |
parents | f958bebdee26 |
children |
line wrap: on
line source
/* * Copyright (c) 2014, 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. */ /* * @test * @bug 8063086 * @summary X^2 special case for C2 yields different result than interpreter * @library /testlibrary /testlibrary/whitebox /compiler/whitebox * @build TestPow2 * @run main ClassFileInstaller sun.hotspot.WhiteBox * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI * -XX:-BackgroundCompilation -XX:-UseOnStackReplacement TestPow2 * */ import java.lang.reflect.*; import sun.hotspot.WhiteBox; public class TestPow2 { private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox(); private static final double base = 5350.456329377186; private static final double exp = 2.0; static double m() { return Math.pow(base, exp); } static public void main(String[] args) throws NoSuchMethodException { Method test_method = TestPow2.class.getDeclaredMethod("m"); double interpreter_result = m(); // Compile with C1 if possible WHITE_BOX.enqueueMethodForCompilation(test_method, CompilerWhiteBoxTest.COMP_LEVEL_SIMPLE); double c1_result = m(); WHITE_BOX.deoptimizeMethod(test_method); // Compile it with C2 if possible WHITE_BOX.enqueueMethodForCompilation(test_method, CompilerWhiteBoxTest.COMP_LEVEL_FULL_OPTIMIZATION); double c2_result = m(); if (interpreter_result != c1_result || interpreter_result != c2_result || c1_result != c2_result) { System.out.println("interpreter = " + interpreter_result + " c1 = " + c1_result + " c2 = " + c2_result); throw new RuntimeException("Test Failed"); } } }