1 /* 2 * Copyright (c) 2019, Red Hat, Inc. 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 * @bug 8234350 27 * @summary loop unrolling breaks when outer strip mined loop contains dead node 28 * 29 * @run main/othervm -Xcomp -XX:-TieredCompilation -XX:CompileOnly=DeadNodesInOuterLoopAtLoopCloning2 DeadNodesInOuterLoopAtLoopCloning2 30 * 31 */ 32 33 public class DeadNodesInOuterLoopAtLoopCloning2 { vMeth(boolean b, int i, float f)34 public static void vMeth(boolean b, int i, float f) { 35 int i1=-4, i2=14, i16=10; 36 byte by=116; 37 38 for (i1 = 323; i1 > 3; i1 -= 2) { 39 if (i2 != 0) { 40 return; 41 } 42 for (i16 = 1; i16 < 10; i16++) { 43 i2 = by; 44 i += (i16 - i2); 45 i2 -= i16; 46 if (b) { 47 i = by; 48 } 49 i2 *= 20; 50 } 51 } 52 } 53 main(String[] strArr)54 public static void main(String[] strArr) { 55 DeadNodesInOuterLoopAtLoopCloning2 _instance = new DeadNodesInOuterLoopAtLoopCloning2(); 56 for (int i = 0; i < 10; i++ ) { 57 _instance.vMeth(true, 168, -125.661F); 58 } 59 } 60 } 61