diff -r 18e65332ac5c -r 4d85990f9c4a test/hotspot/jtreg/vmTestbase/vm/compiler/jbe/dead/dead08/dead08.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/hotspot/jtreg/vmTestbase/vm/compiler/jbe/dead/dead08/dead08.java Fri Jun 01 15:48:55 2018 -0700 @@ -0,0 +1,133 @@ +/* + * Copyright (c) 2002, 2018, 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 + * + * @summary converted from VM Testbase runtime/jbe/dead/dead08. + * VM Testbase keywords: [quick, runtime] + * + * @library /vmTestbase + * /test/lib + * @run driver jdk.test.lib.FileInstaller . . + * @run main/othervm vm.compiler.jbe.dead.dead08.dead08 + */ + +package vm.compiler.jbe.dead.dead08; + +/* -- Test the elimination of dead assignment to class fields within an IF statement + +In the example below, the values assigned to i1-i7 in struct within th IF statement are never used,thus can be eliminated. + + */ + +class struct { + int i1 = 2; + int i2 = 3; + int i3 = 4; + int i4 = 5; + int i5 = 6; + int i6 = 7; + int i7 = 8; + int i8 = 9; +} + +public class dead08 { + boolean bol = true; + + public static void main(String args[]) { + dead08 dce = new dead08(); + + System.out.println("f()="+dce.f()+"; fopt()="+dce.fopt()); + if (dce.f() == dce.fopt()) { + System.out.println("Test dead08 Passed."); + } else { + throw new Error("Test dead08 Failed: f()=" + dce.f() + " != fopt()=" + dce.fopt()); + } + } + + int f() { + struct s = new struct(); + + if (bol) + s.i1 = 1; + if (bol) + s.i2 = 2; + if (bol) + s.i3 = 3; + if (bol) + s.i4 = 4; + if (bol) + s.i5 = 5; + if (bol) + s.i6 = 6; + if (bol) + s.i7 = 7; + if (bol) + s.i8 = 8; + + if (bol) + s.i1 = 1; + if (bol) + s.i2 = 2; + if (bol) + s.i3 = 3; + if (bol) + s.i4 = 4; + if (bol) + s.i5 = 5; + if (bol) + s.i6 = 6; + if (bol) + s.i7 = 7; + if (bol) + s.i8 = 8; + + if (bol) + s.i1 = 1; + if (bol) + s.i2 = 2; + if (bol) + s.i3 = 3; + if (bol) + s.i4 = 4; + if (bol) + s.i5 = 5; + if (bol) + s.i6 = 6; + if (bol) + s.i7 = 7; + if (bol) + s.i8 = 8; + + return s.i8; + } + + // Code fragment after dead code elimination + int fopt() { + struct s = new struct(); + + s.i8 = 8; + return s.i8; + } +}