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test/compiler/intrinsics/mathexact/MulExactIRepeatTest.java@f90c822e73f8 (annotated)

test/compiler/intrinsics/mathexact/MulExactIRepeatTest.java

Wed, 27 Apr 2016 01:25:04 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:25:04 +0800

changeset 0

f90c822e73f8

child 6152

9949533a8623

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/*
aoqi@0	25	* @test
aoqi@0	26	* @bug 8026844
aoqi@0	27	* @summary Test repeating multiplyExact
aoqi@0	28	* @compile MulExactIRepeatTest.java Verify.java
aoqi@0	29	* @run main MulExactIRepeatTest
aoqi@0	30	*
aoqi@0	31	*/
aoqi@0	32
aoqi@0	33	public class MulExactIRepeatTest {
aoqi@0	34	public static void main(String[] args) {
aoqi@0	35	runTest(new Verify.MulExactI());
aoqi@0	36	}
aoqi@0	37
aoqi@0	38	public static int nonExact(int x, int y, Verify.BinaryMethod method) {
aoqi@0	39	int result = method.unchecked(x, y);
aoqi@0	40	result += method.unchecked(x, y);
aoqi@0	41	result += method.unchecked(x, y);
aoqi@0	42	result += method.unchecked(x, y);
aoqi@0	43	return result;
aoqi@0	44	}
aoqi@0	45
aoqi@0	46	public static void runTest(Verify.BinaryMethod method) {
aoqi@0	47	java.util.Random rnd = new java.util.Random();
aoqi@0	48	for (int i = 0; i < 50000; ++i) {
aoqi@0	49	int x = Integer.MAX_VALUE - 10;
aoqi@0	50	int y = Integer.MAX_VALUE - 10 + rnd.nextInt(5);
aoqi@0	51
aoqi@0	52	int c = rnd.nextInt() / 10;
aoqi@0	53	int d = rnd.nextInt(9);
aoqi@0	54
aoqi@0	55	int a = catchingExact(x, y, method);
aoqi@0	56
aoqi@0	57	if (a != 36) {
aoqi@0	58	throw new RuntimeException("a != 36 : " + a);
aoqi@0	59	}
aoqi@0	60
aoqi@0	61	int b = nonExact(c, d, method);
aoqi@0	62	int n = exact(c, d, method);
aoqi@0	63
aoqi@0	64
aoqi@0	65	if (n != b) {
aoqi@0	66	throw new RuntimeException("n != b : " + n + " != " + b);
aoqi@0	67	}
aoqi@0	68	}
aoqi@0	69	}
aoqi@0	70
aoqi@0	71	public static int exact(int x, int y, Verify.BinaryMethod method) {
aoqi@0	72	int result = 0;
aoqi@0	73	result += method.checkMethod(x, y);
aoqi@0	74	result += method.checkMethod(x, y);
aoqi@0	75	result += method.checkMethod(x, y);
aoqi@0	76	result += method.checkMethod(x, y);
aoqi@0	77	return result;
aoqi@0	78	}
aoqi@0	79
aoqi@0	80	public static int catchingExact(int x, int y, Verify.BinaryMethod method) {
aoqi@0	81	int result = 0;
aoqi@0	82	try {
aoqi@0	83	result += 5;
aoqi@0	84	result = method.checkMethod(x, y);
aoqi@0	85	} catch (ArithmeticException e) {
aoqi@0	86	result += 1;
aoqi@0	87	}
aoqi@0	88	try {
aoqi@0	89	result += 6;
aoqi@0	90
aoqi@0	91	result += method.checkMethod(x, y);
aoqi@0	92	} catch (ArithmeticException e) {
aoqi@0	93	result += 2;
aoqi@0	94	}
aoqi@0	95	try {
aoqi@0	96	result += 7;
aoqi@0	97	result += method.checkMethod(x, y);
aoqi@0	98	} catch (ArithmeticException e) {
aoqi@0	99	result += 3;
aoqi@0	100	}
aoqi@0	101	try {
aoqi@0	102	result += 8;
aoqi@0	103	result += method.checkMethod(x, y);
aoqi@0	104	} catch (ArithmeticException e) {
aoqi@0	105	result += 4;
aoqi@0	106	}
aoqi@0	107	return result;
aoqi@0	108	}
aoqi@0	109	}