1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. 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 /** 26 * @test 27 * @bug 8131969 28 * @summary assert in register allocation code when vector Phi for a loop is 29 * processed because code assumes all inputs already processed 30 * 31 * @run main/othervm -Xbatch compiler.regalloc.TestVectorRegAlloc 32 */ 33 34 package compiler.regalloc; 35 36 public class TestVectorRegAlloc { 37 38 static int test_helper_i; 39 static boolean test_helper() { 40 test_helper_i++; 41 return (test_helper_i & 7) != 0; 42 } 43 44 static void test(double[] src, double[] dst, boolean flag) { 45 double j = 0.0; 46 while(test_helper()) { 47 for (int i = 0; i < src.length; i++) { 48 dst[i] = src[i] + j; 49 } 50 // Loop will be unswitched and ReplicateD of zero will be 51 // split through the Phi of outer loop 52 for (int i = 0; i < src.length; i++) { 53 double k; 54 if (flag) { 55 k = j; 56 } else { 57 k = 0; 58 } 59 dst[i] = src[i] + k; 60 } 61 j++; 62 } 63 } 64 65 static public void main(String[] args) { 66 double[] src = new double[10]; 67 double[] dst = new double[10]; 68 for (int i = 0; i < 20000; i++) { 69 test(src, dst, (i % 2) == 0); 70 } 71 } 72 }