diff -r 18e65332ac5c -r 4d85990f9c4a test/hotspot/jtreg/vmTestbase/vm/compiler/jbe/dead/dead12/dead12.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/hotspot/jtreg/vmTestbase/vm/compiler/jbe/dead/dead12/dead12.java Fri Jun 01 15:48:55 2018 -0700 @@ -0,0 +1,143 @@ +/* + * 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/dead12. + * VM Testbase keywords: [quick, runtime] + * + * @library /vmTestbase + * /test/lib + * @run driver jdk.test.lib.FileInstaller . . + * @run main/othervm vm.compiler.jbe.dead.dead12.dead12 + */ + +package vm.compiler.jbe.dead.dead12; + +// dead12.java + +/* -- Test the elimination of dead assignments to a local array within IF statement + Example: + + boolean bol = true; + void foo() + { + int arr[] = new int[SIZE]; + if (bol) arr[1] = 3; + } + +In the example below, most of the assignments to the local array a[] are dead and can be eliminated. + */ + +public class dead12 { + int SIZE = 30; + boolean bol = true; + + public static void main(String args[]) { + dead12 dce = new dead12(); + + System.out.println("f()="+dce.f()+"; fopt()="+dce.fopt()); + if (dce.f() == dce.fopt()) { + System.out.println("Test dead12 Passed."); + } else { + throw new Error("Test dead12 Failed: f()=" + dce.f() + " != fopt()=" + dce.fopt()); + } + } + + int f() { + + int a[] = new int[SIZE]; + + if (bol) + a[0] = 0; + if (bol) + a[1] = 1; + if (bol) + a[2] = 2; + if (bol) + a[3] = 3; + if (bol) + a[4] = 4; + if (bol) + a[5] = 5; + if (bol) + a[6] = 6; + if (bol) + a[7] = 7; + if (bol) + a[8] = 8; + if (bol) + a[9] = 9; + if (bol) + a[10] = 10; + if (bol) + a[11] = 11; + if (bol) + a[12] = 12; + if (bol) + a[13] = 13; + if (bol) + a[14] = 14; + if (bol) + a[15] = 15; + if (bol) + a[16] = 16; + if (bol) + a[17] = 17; + if (bol) + a[18] = 18; + if (bol) + a[19] = 19; + if (bol) + a[20] = 20; + if (bol) + a[21] = 21; + if (bol) + a[22] = 22; + if (bol) + a[23] = 23; + if (bol) + a[24] = 24; + if (bol) + a[25] = 25; + if (bol) + a[26] = 26; + if (bol) + a[27] = 27; + if (bol) + a[28] = 28; + if (bol) + a[29] = 29; + + return a[12]; + } + + // Code fragment after dead code elimination + int fopt() { + int a[] = new int[SIZE]; + + a[12] = 12; + return a[12] = 12; + } +}