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111
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1 /* { dg-do run } */
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2 /* { dg-options "-O2 -ftree-vectorize -std=c99 -fipa-pta" } */
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3
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4
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5 extern void abort (void);
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6
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7 #define nEvents 1000
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8
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9 static void __attribute__((noinline, noclone, optimize("-fno-tree-vectorize")))
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10 init (unsigned *results, unsigned *pData)
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11 {
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12 unsigned int i;
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13 for (i = 0; i < nEvents; ++i)
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14 pData[i] = i % 3;
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15 }
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16
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17 static void __attribute__((noinline, noclone, optimize("-fno-tree-vectorize")))
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18 check (unsigned *results)
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19 {
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20 unsigned sum = 0;
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21 for (int idx = 0; idx < (int)nEvents; idx++)
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22 sum += results[idx];
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23
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24 if (sum != 1998)
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25 abort ();
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26 }
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27
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28 int
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29 main (void)
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30 {
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31 unsigned results[nEvents];
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32 unsigned pData[nEvents];
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33 unsigned coeff = 2;
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34
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35 init (&results[0], &pData[0]);
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36
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37 #pragma omp parallel for
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38 for (int idx = 0; idx < (int)nEvents; idx++)
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39 results[idx] = coeff * pData[idx];
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40
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41 check (&results[0]);
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42
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43 return 0;
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44 }
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