1 /*
   2  * Copyright (c) 2016, 2017, 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  * @key aot
  27  * @library /test/lib /testlibrary /
  28  * @requires vm.bits == "64" & (os.arch == "amd64" | os.arch == "x86_64")
  29  * @modules java.base/jdk.internal.misc
  30  * @build compiler.aot.DeoptimizationTest
  31  *        compiler.aot.AotCompiler
  32  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  33  *     sun.hotspot.WhiteBox$WhiteBoxPermission
  34  * @run main compiler.aot.AotCompiler -libname libDeoptimizationTest.so
  35  *     -class compiler.aot.DeoptimizationTest
  36  *     -compile compiler.aot.DeoptimizationTest.testMethod()D
  37  *     -extraopt -XX:-UseCompressedOops
  38  * @run main/othervm -Xmixed -XX:+UseAOT -XX:+TieredCompilation
  39  *     -XX:-UseCompressedOops
  40  *     -XX:CompileCommand=dontinline,compiler.aot.DeoptimizationTest::*
  41  *     -XX:AOTLibrary=./libDeoptimizationTest.so -Xbootclasspath/a:.
  42  *     -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
  43  *     compiler.aot.DeoptimizationTest
  44  * @summary check if aot code can be deoptimized
  45  */
  46 
  47 package compiler.aot;
  48 
  49 import java.lang.reflect.Method;
  50 import jdk.test.lib.Asserts;
  51 import jdk.test.lib.Utils;
  52 import sun.hotspot.WhiteBox;
  53 import compiler.whitebox.CompilerWhiteBoxTest;
  54 
  55 public final class DeoptimizationTest {
  56     private static final String TEST_METHOD = "testMethod";
  57     private static final WhiteBox WB = WhiteBox.getWhiteBox();
  58     private final Method testMethod;
  59 
  60     private DeoptimizationTest() {
  61         try {
  62             testMethod = getClass().getDeclaredMethod(TEST_METHOD);
  63         } catch (NoSuchMethodException e) {
  64             throw new Error("TEST BUG: no test method found", e);
  65         }
  66     }
  67 
  68     public static void main(String args[]) {
  69         new DeoptimizationTest().test();
  70     }
  71 
  72     private double testMethod() {
  73         return 42 / 0;
  74     }
  75 
  76     private void test() {
  77         Asserts.assertTrue(WB.isMethodCompiled(testMethod),
  78                 "Method expected to be compiled");
  79         Asserts.assertEQ(WB.getMethodCompilationLevel(testMethod),
  80                 CompilerWhiteBoxTest.COMP_LEVEL_AOT,
  81                 "Unexpected compilation level at start");
  82         Utils.runAndCheckException(() -> testMethod(), ArithmeticException.class);
  83         Asserts.assertFalse(WB.isMethodCompiled(testMethod),
  84                 "Method is unexpectedly compiled after deoptimization");
  85         Asserts.assertEQ(WB.getMethodCompilationLevel(testMethod), 0,
  86                 "Unexpected compilation level after deoptimization");
  87     }
  88 }