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annotate graal/com.oracle.graal.compiler.hsail.test/src/com/oracle/graal/compiler/hsail/test/LongBitwiseShiftRightTest.java @ 13880:4c2f5b7deb6c

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Added tag graal-0.1 for changeset b124e22eb772
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Wed, 05 Feb 2014 14:59:55 +0100
parents c73b857b1be9
children 64dcb92ee75a
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12651
c73b857b1be9 Adds support to the HSAIL backend to generate code for bitwise right shift (>>), bitwise NOT (~), and arithmetic negation
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1 /*
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2 * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 package com.oracle.graal.compiler.hsail.test;
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25
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26 import org.junit.Test;
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27 import com.oracle.graal.compiler.hsail.test.infra.*;
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28
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29 /**
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30 * Tests bitwise right shift of long values. Generates an shr_s64 instruction.
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31 */
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32 public class LongBitwiseShiftRightTest extends GraalKernelTester {
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33
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34 static final int num = 100;
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35 // Output array containing the results of shift operations.
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36 @Result protected long[] outArray = new long[num];
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37
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38 /**
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39 * The static "kernel" method we will be testing. This method performs a bitwise shift righj
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40 * operation on an element of an input array and writes the result to the corresponding index of
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41 * an output array. By convention the gid is the last parameter.
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42 *
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43 * @param out the output array
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44 * @param ina the input array
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45 * @param shiftAmount an array of values used for the shift magnitude
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46 * @param gid the parameter used to index into the input and output arrays
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47 */
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48 public static void run(long[] out, long[] ina, int[] shiftAmount, int gid) {
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49 out[gid] = ina[gid] >> shiftAmount[gid];
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50 }
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51
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52 /**
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53 * Tests the HSAIL code generated for this unit test by comparing the result of executing this
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54 * code with the result of executing a sequential Java version of this unit test.
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55 */
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56 @Test
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57 public void test() {
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58 super.testGeneratedHsail();
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59 }
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60
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61 /**
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62 * Initializes the arrays passed to the run routine.
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63 *
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64 * We do this in such a way that the input arrays contain a mix of negative and positive values.
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65 * As a result, the work items will exercise all the different combinations for the sign of the
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66 * value being shifted and the sign of the shift magnitude.
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67 *
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68 * @param in the input array
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69 */
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70 void setupArrays(long[] in, int[] shiftAmount) {
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71 for (int i = 0; i < num; i++) {
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72 /**
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73 * Fill lower half of in[] with positive numbers and upper half with negative numbers.
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74 */
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75 in[i] = i < num / 2 ? i : -i;
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76 /**
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77 * Fill shiftAmount[] so that even elements are positive and odd elements are negative.
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78 */
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79 shiftAmount[i] = (i & 1) == 0 ? i : -i;
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80 outArray[i] = 0;
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81 }
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82 }
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83
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84 /**
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85 * Dispatches the HSAIL kernel for this test case.
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86 */
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87 @Override
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88 public void runTest() {
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89 long[] inArray = new long[num];
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90 int[] shiftAmount = new int[num];
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91 setupArrays(inArray, shiftAmount);
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92 dispatchMethodKernel(num, outArray, inArray, shiftAmount);
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93 }
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94 }