| /* |
| * Copyright (c) 2013, Oracle and/or its affiliates. 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 6443505 |
| * @summary Some cases for CmpLTMask missed; also wrong code. |
| * |
| * @run main/othervm -Xcomp |
| * -XX:CompileCommand=compileonly,compiler.c2.Test6443505::compiled |
| * compiler.c2.Test6443505 |
| */ |
| |
| package compiler.c2; |
| |
| public class Test6443505 { |
| |
| public static void main(String[] args) throws InterruptedException { |
| test(Integer.MIN_VALUE, 0); |
| test(0, Integer.MIN_VALUE); |
| test(Integer.MIN_VALUE, -1); |
| test(-1, Integer.MIN_VALUE); |
| test(Integer.MIN_VALUE, 1); |
| test(1, Integer.MIN_VALUE); |
| |
| test(Integer.MAX_VALUE, 0); |
| test(0, Integer.MAX_VALUE); |
| test(Integer.MAX_VALUE, -1); |
| test(-1, Integer.MAX_VALUE); |
| test(Integer.MAX_VALUE, 1); |
| test(1, Integer.MAX_VALUE); |
| |
| test(Integer.MIN_VALUE, Integer.MAX_VALUE); |
| test(Integer.MAX_VALUE, Integer.MIN_VALUE); |
| |
| test(1, -1); |
| test(1, 0); |
| test(1, 1); |
| test(-1, -1); |
| test(-1, 0); |
| test(-1, 1); |
| test(0, -1); |
| test(0, 0); |
| test(0, 1); |
| } |
| |
| public static void test(int a, int b) throws InterruptedException { |
| int C = compiled(4, a, b); |
| int I = interpreted(4, a, b); |
| if (C != I) { |
| System.err.println("#1 C = " + C + ", I = " + I); |
| System.err.println("#1 C != I, FAIL"); |
| System.exit(97); |
| } |
| |
| C = compiled(a, b, q, 4); |
| I = interpreted(a, b, q, 4); |
| if (C != I) { |
| System.err.println("#2 C = " + C + ", I = " + I); |
| System.err.println("#2 C != I, FAIL"); |
| System.exit(97); |
| } |
| |
| } |
| |
| static int q = 4; |
| |
| // If improperly compiled, uses carry/borrow bit, which is wrong. |
| // with -XX:+PrintOptoAssembly, look for cadd_cmpLTMask |
| static int compiled(int p, int x, int y) { |
| return (x < y) ? q + (x - y) : (x - y); |
| } |
| |
| // interpreted reference |
| static int interpreted(int p, int x, int y) { |
| return (x < y) ? q + (x - y) : (x - y); |
| } |
| |
| // Test new code with a range of cases |
| // with -XX:+PrintOptoAssembly, look for and_cmpLTMask |
| static int compiled(int x, int y, int q, int p) { |
| return (x < y) ? p + q : q; |
| } |
| |
| // interpreted reference |
| static int interpreted(int x, int y, int q, int p) { |
| return (x < y) ? p + q : q; |
| } |
| |
| } |