libgomp/testsuite/libgomp.c/pr58392.c

   1 /* PR tree-optimization/58392 */
   2 /* { dg-do run } */
   3 /* { dg-additional-options "-msse2" { target sse2_runtime } } */
   4 /* { dg-additional-options "-mavx" { target avx_runtime } } */
   5
   6 extern void abort (void);
   7 int d[32 * 32];
   8
   9 __attribute__((noinline, noclone)) int
  10 foo (int a, int b)
  11 {
  12   int j, c = 0;
  13   #pragma omp parallel for reduction(+: c)
  14     for (j = 0; j < a; j += 32)
  15       {
  16         int l;
  17         #pragma omp simd reduction(+: c)
  18           for (l = 0; l < b; ++l)
  19             c += d[j + l];
  20       }
  21   return c;
  22 }
  23
  24 __attribute__((noinline, noclone)) int
  25 bar (int a)
  26 {
  27   int j, c = 0;
  28   #pragma omp parallel for simd reduction(+: c)
  29     for (j = 0; j < a; ++j)
  30       c += d[j];
  31   return c;
  32 }
  33
  34 __attribute__((noinline)) static int
  35 baz (int a)
  36 {
  37   int j, c = 0;
  38   #pragma omp simd reduction(+: c)
  39     for (j = 0; j < a; ++j)
  40       c += d[j];
  41   return c;
  42 }
  43
  44 int
  45 main ()
  46 {
  47   int i;
  48   for (i = 0; i < 32 * 32; i++)
  49     d[i] = (i & 31);
  50   if (foo (32 * 32, 32) != (31 * 32 / 2) * 32)
  51     abort ();
  52   if (bar (32 * 32) != (31 * 32 / 2) * 32)
  53     abort ();
  54   if (baz (32 * 32) != (31 * 32 / 2) * 32)
  55     abort ();
  56   return 0;
  57 }