hotspot/test/compiler/intrinsics/mathexact/SubExactICondTest.java
author rbackman
Fri, 18 Oct 2013 10:41:56 +0200
changeset 21105 47618ee96ed5
child 21920 7b7c52305d6a
permissions -rw-r--r--
8026844: Various Math functions needs intrinsification Reviewed-by: kvn, twisti
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/*
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 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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/*
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 * @test
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 * @bug 8026844
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 * @summary Test subtractExact as condition
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 * @compile SubExactICondTest.java Verify.java
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 * @run main SubExactICondTest
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 *
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 */
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public class SubExactICondTest {
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  public static int result = 0;
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  public static void main(String[] args) {
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    for (int i = 0; i < 50000; ++i) {
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      runTest();
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    }
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  }
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  public static void runTest() {
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    int i = 7;
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    while (java.lang.Math.subtractExact(i, result) > -31361) {
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        if ((java.lang.Math.subtractExact(i, i) & 1) == 1) {
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            i -= 3;
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        } else if ((i & 5) == 4) {
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            i -= 7;
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        } else if ((i & 0xf) == 6) {
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            i -= 2;
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        } else {
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            i -= 1;
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        }
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        result += 2;
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    }
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  }
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}