roland@6313: /*
roland@6313:  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
roland@6313:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
roland@6313:  *
roland@6313:  * This code is free software; you can redistribute it and/or modify it
roland@6313:  * under the terms of the GNU General Public License version 2 only, as
roland@6313:  * published by the Free Software Foundation.
roland@6313:  *
roland@6313:  * This code is distributed in the hope that it will be useful, but WITHOUT
roland@6313:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
roland@6313:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
roland@6313:  * version 2 for more details (a copy is included in the LICENSE file that
roland@6313:  * accompanied this code).
roland@6313:  *
roland@6313:  * You should have received a copy of the GNU General Public License version
roland@6313:  * 2 along with this work; if not, write to the Free Software Foundation,
roland@6313:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
roland@6313:  *
roland@6313:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
roland@6313:  * or visit www.oracle.com if you need additional information or have any
roland@6313:  * questions.
roland@6313:  */
roland@6313: 
roland@6313: /*
roland@6313:  * @test
roland@6313:  * @bug 8027422
roland@6313:  * @summary type methods shouldn't always operate on speculative part
roland@6313:  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:TypeProfileLevel=222 -XX:+UnlockExperimentalVMOptions -XX:+UseTypeSpeculation -XX:-BackgroundCompilation TestSpeculationFailedHigherEqual
roland@6313:  *
roland@6313:  */
roland@6313: 
roland@6313: public class TestSpeculationFailedHigherEqual {
roland@6313: 
roland@6313:     static class A {
roland@6313:         void m() {}
roland@6313:         int i;
roland@6313:     }
roland@6313: 
roland@6313:     static class C extends A {
roland@6313:     }
roland@6313: 
roland@6313:     static C c;
roland@6313: 
roland@6313:     static A m1(A a, boolean cond) {
roland@6313:         // speculative type for a is C not null
roland@6313:         if (cond ) {
roland@6313:             a = c;
roland@6313:         }
roland@6313:         // speculative type for a is C (may be null)
roland@6313:         int i = a.i;
roland@6313:         return a;
roland@6313:     }
roland@6313: 
roland@6313:     static public void main(String[] args) {
roland@6313:         C c = new C();
roland@6313:         TestSpeculationFailedHigherEqual.c = c;
roland@6313:         for (int i = 0; i < 20000; i++) {
roland@6313:             m1(c, i%2 == 0);
roland@6313:         }
roland@6313: 
roland@6313:         System.out.println("TEST PASSED");
roland@6313:     }
roland@6313: }