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 31 * -XX:CompileCommand=compiler.c2.Test6443505::compiled 32 * compiler.c2.Test6443505 33 */ 34 35 package compiler.c2; 36 37 public class Test6443505 { 38 39 public static void main(String[] args) throws InterruptedException { 40 test(Integer.MIN_VALUE, 0); 41 test(0, Integer.MIN_VALUE); 42 test(Integer.MIN_VALUE, -1); 43 test(-1, Integer.MIN_VALUE); 44 test(Integer.MIN_VALUE, 1); 45 test(1, Integer.MIN_VALUE); 46 47 test(Integer.MAX_VALUE, 0); 48 test(0, Integer.MAX_VALUE); 49 test(Integer.MAX_VALUE, -1); 50 test(-1, Integer.MAX_VALUE); 51 test(Integer.MAX_VALUE, 1); 52 test(1, Integer.MAX_VALUE); 53 54 test(Integer.MIN_VALUE, Integer.MAX_VALUE); 55 test(Integer.MAX_VALUE, Integer.MIN_VALUE); 56 57 test(1, -1); 58 test(1, 0); 59 test(1, 1); 60 test(-1, -1); 61 test(-1, 0); 62 test(-1, 1); 63 test(0, -1); 64 test(0, 0); 65 test(0, 1); 66 } 67 68 public static void test(int a, int b) throws InterruptedException { 69 int C = compiled(4, a, b); 70 int I = interpreted(4, a, b); 71 if (C != I) { 72 System.err.println("#1 C = " + C + ", I = " + I); 73 System.err.println("#1 C != I, FAIL"); 74 System.exit(97); 75 } 76 77 C = compiled(a, b, q, 4); 78 I = interpreted(a, b, q, 4); 79 if (C != I) { 80 System.err.println("#2 C = " + C + ", I = " + I); 81 System.err.println("#2 C != I, FAIL"); 82 System.exit(97); 83 } 84 85 } 86 87 static int q = 4; 88 89 // If improperly compiled, uses carry/borrow bit, which is wrong. 90 // with -XX:+PrintOptoAssembly, look for cadd_cmpLTMask 91 static int compiled(int p, int x, int y) { 92 return (x < y) ? q + (x - y) : (x - y); 93 } 94 95 // interpreted reference 96 static int interpreted(int p, int x, int y) { 97 return (x < y) ? q + (x - y) : (x - y); 98 } 99 100 // Test new code with a range of cases 101 // with -XX:+PrintOptoAssembly, look for and_cmpLTMask 102 static int compiled(int x, int y, int q, int p) { 103 return (x < y) ? p + q : q; 104 } 105 106 // interpreted reference 107 static int interpreted(int x, int y, int q, int p) { 108 return (x < y) ? p + q : q; 109 } 110 111 }