/*
* 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.
*
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*/
/**
* @test
* @bug 6443505
* @summary Some cases for CmpLTMask missed; also wrong code.
*
* @run main/othervm -Xcomp -XX:CompileOnly="Test6443505.compiled" Test6443505
*/
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;
}
}