1 /*
   2  * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @library /test/lib /testlibrary /
  27  * @requires vm.bits == "64" & os.arch == "amd64" & os.family == "linux"
  28  * @modules java.base/jdk.internal.misc
  29  * @build compiler.aot.DeoptimizationTest
  30  *        compiler.aot.AotCompiler
  31  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  32  *     sun.hotspot.WhiteBox$WhiteBoxPermission
  33  * @run main compiler.aot.AotCompiler -libname libDeoptimizationTest.so
  34  *     -class compiler.aot.DeoptimizationTest
  35  *     -compile compiler.aot.DeoptimizationTest.testMethod()D
  36  *     -extraopt -XX:-UseCompressedOops
  37  * @run main/othervm -Xmixed -XX:+UseAOT -XX:+TieredCompilation
  38  *     -XX:-UseCompressedOops
  39  *     -XX:CompileCommand=dontinline,compiler.aot.DeoptimizationTest::*
  40  *     -XX:AOTLibrary=./libDeoptimizationTest.so -Xbootclasspath/a:.
  41  *     -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
  42  *     compiler.aot.DeoptimizationTest
  43  * @summary check if aot code can be deoptimized
  44  */
  45 
  46 package compiler.aot;
  47 
  48 import java.lang.reflect.Method;
  49 import jdk.test.lib.Asserts;
  50 import jdk.test.lib.Utils;
  51 import sun.hotspot.WhiteBox;
  52 import compiler.whitebox.CompilerWhiteBoxTest;
  53 
  54 public final class DeoptimizationTest {
  55     private static final String TEST_METHOD = "testMethod";
  56     private static final WhiteBox WB = WhiteBox.getWhiteBox();
  57     private final Method testMethod;
  58 
  59     private DeoptimizationTest() {
  60         try {
  61             testMethod = getClass().getDeclaredMethod(TEST_METHOD);
  62         } catch (NoSuchMethodException e) {
  63             throw new Error("TEST BUG: no test method found", e);
  64         }
  65     }
  66 
  67     public static void main(String args[]) {
  68         new DeoptimizationTest().test();
  69     }
  70 
  71     private double testMethod() {
  72         return 42 / 0;
  73     }
  74 
  75     private void test() {
  76         Asserts.assertTrue(WB.isMethodCompiled(testMethod),
  77                 "Method expected to be compiled");
  78         Asserts.assertEQ(WB.getMethodCompilationLevel(testMethod),
  79                 CompilerWhiteBoxTest.COMP_LEVEL_AOT,
  80                 "Unexpected compilation level at start");
  81         Utils.runAndCheckException(() -> testMethod(), ArithmeticException.class);
  82         Asserts.assertFalse(WB.isMethodCompiled(testMethod),
  83                 "Method is unexpectedly compiled after deoptimization");
  84         Asserts.assertEQ(WB.getMethodCompilationLevel(testMethod), 0,
  85                 "Unexpected compilation level after deoptimization");
  86     }
  87 }