| /* |
| * Copyright (c) 2018, Red Hat, Inc. 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 8210389 |
| * @summary C2: assert(n->outcnt() != 0 || C->top() == n || n->is_Proj()) failed: No dead instructions after post-alloc |
| * |
| * @run main/othervm -Xcomp -XX:CompileOnly=VolatileLoadMemBarsOnlyUses VolatileLoadMemBarsOnlyUses |
| * |
| */ |
| |
| public class VolatileLoadMemBarsOnlyUses { |
| |
| public static final int N = 400; |
| public static long instanceCount=-94L; |
| public static volatile byte byFld=-108; |
| |
| public int mainTest(String[] strArr1) { |
| |
| int i17=9, i19=1, i20=63, i21=-32916, i22=0, iArr[]=new int[N]; |
| boolean b1=false; |
| double d3=76.18241; |
| |
| for (int i : iArr) { |
| for (i17 = 2; i17 < 63; i17++) { |
| if (b1) break; |
| byFld += (byte)(0.131F + (i17 * i17)); |
| } |
| for (i19 = 1; 63 > i19; ++i19) { |
| for (i21 = 1; i21 < 2; i21++) { |
| d3 = i22; |
| if (b1) continue; |
| i20 = i21; |
| } |
| d3 -= byFld; |
| instanceCount = 46725L; |
| } |
| switch ((((i22 >>> 1) % 4) * 5) + 91) { |
| case 98: |
| break; |
| case 110: |
| break; |
| case 105: |
| break; |
| case 103: |
| break; |
| default: |
| } |
| } |
| |
| return i20; |
| } |
| public static void main(String[] strArr) { |
| VolatileLoadMemBarsOnlyUses _instance = new VolatileLoadMemBarsOnlyUses(); |
| for (int i = 0; i < 10; i++ ) { |
| _instance.mainTest(strArr); |
| } |
| } |
| } |
