1 /* 2 * Copyright (c) 2013, 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 6443505 28 * @summary Some cases for CmpLTMask missed; also wrong code. 29 * 30 * @run main/othervm -Xcomp -XX:CompileOnly="Test6443505.compiled" Test6443505 31 */ 32 33 public class Test6443505 { 34 35 public static void main(String[] args) throws InterruptedException { 36 test(Integer.MIN_VALUE, 0); 37 test(0, Integer.MIN_VALUE); 38 test(Integer.MIN_VALUE, -1); 39 test(-1, Integer.MIN_VALUE); 40 test(Integer.MIN_VALUE, 1); 41 test(1, Integer.MIN_VALUE); 42 43 test(Integer.MAX_VALUE, 0); 44 test(0, Integer.MAX_VALUE); 45 test(Integer.MAX_VALUE, -1); 46 test(-1, Integer.MAX_VALUE); 47 test(Integer.MAX_VALUE, 1); 48 test(1, Integer.MAX_VALUE); 49 50 test(Integer.MIN_VALUE, Integer.MAX_VALUE); 51 test(Integer.MAX_VALUE, Integer.MIN_VALUE); 52 53 test(1, -1); 54 test(1, 0); 55 test(1, 1); 56 test(-1, -1); 57 test(-1, 0); 58 test(-1, 1); 59 test(0, -1); 60 test(0, 0); 61 test(0, 1); 62 } 63 64 public static void test(int a, int b) throws InterruptedException { 65 int C = compiled(4, a, b); 66 int I = interpreted(4, a, b); 67 if (C != I) { 68 System.err.println("#1 C = " + C + ", I = " + I); 69 System.err.println("#1 C != I, FAIL"); 70 System.exit(97); 71 } 72 73 C = compiled(a, b, q, 4); 74 I = interpreted(a, b, q, 4); 75 if (C != I) { 76 System.err.println("#2 C = " + C + ", I = " + I); 77 System.err.println("#2 C != I, FAIL"); 78 System.exit(97); 79 } 80 81 } 82 83 static int q = 4; 84 85 // If improperly compiled, uses carry/borrow bit, which is wrong. 86 // with -XX:+PrintOptoAssembly, look for cadd_cmpLTMask 87 static int compiled(int p, int x, int y) { 88 return (x < y) ? q + (x - y) : (x - y); 89 } 90 91 // interpreted reference 92 static int interpreted(int p, int x, int y) { 93 return (x < y) ? q + (x - y) : (x - y); 94 } 95 96 // Test new code with a range of cases 97 // with -XX:+PrintOptoAssembly, look for and_cmpLTMask 98 static int compiled(int x, int y, int q, int p) { 99 return (x < y) ? p + q : q; 100 } 101 102 // interpreted reference 103 static int interpreted(int x, int y, int q, int p) { 104 return (x < y) ? p + q : q; 105 } 106 107 }