--- old/src/share/vm/c1/c1_LIR.cpp 2015-02-25 10:07:04.290421127 +0300 +++ new/src/share/vm/c1/c1_LIR.cpp 2015-02-25 10:07:04.214421129 +0300 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2000, 2015, 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 @@ -2096,8 +2096,14 @@ // LIR_OpProfileType void LIR_OpProfileType::print_instr(outputStream* out) const { - out->print("exact = "); exact_klass()->print_name_on(out); - out->print("current = "); ciTypeEntries::print_ciklass(out, current_klass()); + out->print("exact = "); + if (exact_klass() == NULL) { + out->print("unknown"); + } else { + exact_klass()->print_name_on(out); + } + out->print(" current = "); ciTypeEntries::print_ciklass(out, current_klass()); + out->print(" "); mdp()->print(out); out->print(" "); obj()->print(out); out->print(" "); tmp()->print(out); out->print(" "); --- /dev/null 2015-02-19 12:00:42.370624954 +0300 +++ new/test/compiler/print/TestProfileReturnTypePrinting.java 2015-02-25 10:07:04.726421111 +0300 @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2015, 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 8073154 + * @build TestProfileReturnTypePrinting + * @run main/othervm -XX:TypeProfileLevel=020 + * -XX:CompileOnly=TestProfileReturnTypePrinting.testMethod + * -XX:+IgnoreUnrecognizedVMOptions -XX:+PrintLIR + * TestProfileReturnTypePrinting + * @summary Verify that c1's LIR that contains ProfileType node could be dumped + * without a crash disregard to an exact class knowledge. + */ +public class TestProfileReturnTypePrinting { + private static final int ITERATIONS = 1_000_000; + + public static void main(String args[]) { + for (int i = 0; i < ITERATIONS; i++) { + TestProfileReturnTypePrinting.testMethod(i); + } + } + + private static int testMethod(int i) { + return TestProfileReturnTypePrinting.foo().hashCode() + + TestProfileReturnTypePrinting.bar(i).hashCode(); + } + + /* Exact class of returned value is known statically. */ + private static B foo() { + return new B(); + } + + /* Exact class of returned value is not known statically. */ + private static Object bar(int i) { + if (i % 2 == 0) { + return new A(); + } else { + return new B(); + } + } + + private static class A { + } + + private static class B extends A { + } +}