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view graal/com.oracle.graal.compiler.hsail.test/src/com/oracle/graal/compiler/hsail/test/IntBitwiseShiftRightTest.java @ 18641:e22a21b27036
Merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sun, 07 Dec 2014 20:43:33 +0100 |
parents | 64dcb92ee75a |
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/* * Copyright (c) 2009, 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. */ package com.oracle.graal.compiler.hsail.test; import org.junit.*; import com.oracle.graal.compiler.hsail.test.infra.*; /** * Tests bitwise shift right of int values. Generates an shr_s32 instruction. */ public class IntBitwiseShiftRightTest extends GraalKernelTester { static final int num = 100; // Output array containing the results of shift operations. @Result protected int[] outArray = new int[num]; /** * The static "kernel" method we will be testing. This method performs a bitwise shift left * operation on each element of an input array and writes each result to the corresponding index * of an output array. By convention the gid is the last parameter. * * @param out the output array * @param ina the input array * @param shiftAmount an array of values used for the shift magnitude * @param gid the parameter used to index into the input and output arrays */ public static void run(int[] out, int[] ina, int[] shiftAmount, int gid) { out[gid] = ina[gid] >> shiftAmount[gid]; } /** * Tests the HSAIL code generated for this unit test by comparing the result of executing this * code with the result of executing a sequential Java version of this unit test. */ @Test public void test() { super.testGeneratedHsail(); } /** * Initializes the arrays passed to the run routine. * * We do this in such a way that the input arrays contain a mix of negative and positive values. * As a result, the work items will exercise all the different combinations for the sign of the * value being shifted and the sign of the shift magnitude. * * @param in the input array */ void setupArrays(int[] in, int[] shiftAmount) { for (int i = 0; i < num; i++) { in[i] = i < num / 2 ? i : -i; shiftAmount[i] = (i & 1) == 0 ? i : -i; outArray[i] = 0; } } /** * Dispatches the HSAIL kernel for this test case. */ @Override public void runTest() { int[] inArray = new int[num]; int[] shiftAmount = new int[num]; setupArrays(inArray, shiftAmount); dispatchMethodKernel(num, outArray, inArray, shiftAmount); } }