Path: blob/master/test/hotspot/jtreg/compiler/loopstripmining/DeadNodesInOuterLoopAtLoopCloning2.java
41149 views
/*1* Copyright (c) 2019, Red Hat, Inc. All rights reserved.2* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.3*4* This code is free software; you can redistribute it and/or modify it5* under the terms of the GNU General Public License version 2 only, as6* published by the Free Software Foundation.7*8* This code is distributed in the hope that it will be useful, but WITHOUT9* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or10* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License11* version 2 for more details (a copy is included in the LICENSE file that12* accompanied this code).13*14* You should have received a copy of the GNU General Public License version15* 2 along with this work; if not, write to the Free Software Foundation,16* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.17*18* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA19* or visit www.oracle.com if you need additional information or have any20* questions.21*/2223/**24* @test25* @bug 823435026* @summary loop unrolling breaks when outer strip mined loop contains dead node27*28* @run main/othervm -Xcomp -XX:-TieredCompilation -XX:CompileOnly=DeadNodesInOuterLoopAtLoopCloning2 DeadNodesInOuterLoopAtLoopCloning229*30*/3132public class DeadNodesInOuterLoopAtLoopCloning2 {33public static void vMeth(boolean b, int i, float f) {34int i1=-4, i2=14, i16=10;35byte by=116;3637for (i1 = 323; i1 > 3; i1 -= 2) {38if (i2 != 0) {39return;40}41for (i16 = 1; i16 < 10; i16++) {42i2 = by;43i += (i16 - i2);44i2 -= i16;45if (b) {46i = by;47}48i2 *= 20;49}50}51}5253public static void main(String[] strArr) {54DeadNodesInOuterLoopAtLoopCloning2 _instance = new DeadNodesInOuterLoopAtLoopCloning2();55for (int i = 0; i < 10; i++ ) {56_instance.vMeth(true, 168, -125.661F);57}58}59}606162