mirror of
https://github.com/autc04/Retro68.git
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45 lines
851 B
C
45 lines
851 B
C
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/* { dg-do run } */
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/* { dg-options "-O2 -ftree-vectorize -std=c99 -fipa-pta" } */
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extern void abort (void);
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#define nEvents 1000
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static void __attribute__((noinline, noclone, optimize("-fno-tree-vectorize")))
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init (unsigned *results, unsigned *pData)
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{
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unsigned int i;
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for (i = 0; i < nEvents; ++i)
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pData[i] = i % 3;
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}
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static void __attribute__((noinline, noclone, optimize("-fno-tree-vectorize")))
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check (unsigned *results)
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{
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unsigned sum = 0;
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for (int idx = 0; idx < (int)nEvents; idx++)
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sum += results[idx];
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if (sum != 1998)
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abort ();
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}
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int
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main (void)
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{
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unsigned results[nEvents];
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unsigned pData[nEvents];
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unsigned coeff = 2;
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init (&results[0], &pData[0]);
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#pragma omp parallel for
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for (int idx = 0; idx < (int)nEvents; idx++)
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results[idx] = coeff * pData[idx];
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check (&results[0]);
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return 0;
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}
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