gcc/testsuite/gcc.dg/vect/pr46032.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target fopenmp } */
   3 /* { dg-require-effective-target vect_int } */
   4 /* { dg-additional-options "-fopenmp -fipa-pta" } */
   5
   6 extern void abort (void);
   7
   8 #define nEvents 1000
   9
  10 static void __attribute__((noinline, noclone, optimize("-fno-tree-vectorize")))
  11 init (unsigned *results, unsigned *pData)
  12 {
  13   unsigned int i;
  14   for (i = 0; i < nEvents; ++i)
  15     pData[i] = i % 3;
  16 }
  17
  18 static void __attribute__((noinline, noclone, optimize("-fno-tree-vectorize")))
  19 check (unsigned *results)
  20 {
  21   unsigned sum = 0;
  22   for (int idx = 0; idx < (int)nEvents; idx++)
  23     sum += results[idx];
  24
  25   if (sum != 1998)
  26     abort ();
  27 }
  28
  29 int
  30 main (void)
  31 {
  32   unsigned results[nEvents];
  33   unsigned pData[nEvents];
  34   unsigned coeff = 2;
  35
  36   init (&results[0], &pData[0]);
  37
  38 #pragma omp parallel for
  39   for (int idx = 0; idx < (int)nEvents; idx++)
  40     results[idx] = coeff * pData[idx];
  41
  42   check (&results[0]);
  43
  44   return 0;
  45 }
  46
  47 /* { dg-final { scan-tree-dump-times "note: vectorized 1 loop" 1 "vect" { xfail { vect_no_align && { ! vect_hw_misalign } } } } } */
  48 /* { dg-final { scan-tree-dump-not "versioning for alias required" "vect" } } */
  49