/* * 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
*/
publicstaticvoid 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);
}
}
staticint q = 4;
// If improperly compiled, uses carry/borrow bit, which is wrong. // with -XX:+PrintOptoAssembly, look for cadd_cmpLTMask staticint compiled(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 staticint compiled(int x, int y, int q, int p) { return (x < y) ? p + q : q;
}
// interpreted reference staticint interpreted(int x, int y, int q, int p) { return (x < y) ? p + q : q;
}
}
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