gcc/testsuite/gcc.dg/vect/vect-mask-load-1.c

   1 /* { dg-additional-options "-Ofast -fno-common" } */
   2 /* { dg-additional-options "-Ofast -fno-common -mavx" { target avx_runtime } } */
   3
   4 #include "tree-vect.h"
   5
   6 __attribute__((noinline, noclone)) void
   7 foo (double *x, double *y)
   8 {
   9   double *p = __builtin_assume_aligned (x, 16);
  10   double *q = __builtin_assume_aligned (y, 16);
  11   double z, h;
  12   int i;
  13   for (i = 0; i < 1024; i++)
  14     {
  15       if (p[i] < 0.0)
  16         z = q[i], h = q[i] * 7.0 + 3.0;
  17       else
  18         z = p[i] + 6.0, h = p[1024 + i];
  19       p[i] = z + 2.0 * h;
  20     }
  21 }
  22
  23 double a[2048] __attribute__((aligned (16)));
  24 double b[1024] __attribute__((aligned (16)));
  25
  26 int
  27 main ()
  28 {
  29   int i;
  30   check_vect ();
  31   for (i = 0; i < 1024; i++)
  32     {
  33       a[i] = (i & 1) ? -i : 2 * i;
  34       a[i + 1024] = i;
  35       b[i] = 7 * i;
  36       asm ("");
  37     }
  38   foo (a, b);
  39   for (i = 0; i < 1024; i++)
  40     if (a[i] != ((i & 1)
  41                  ? 7 * i + 2.0 * (7 * i * 7.0 + 3.0)
  42                  : 2 * i + 6.0 + 2.0 * i)
  43         || b[i] != 7 * i
  44         || a[i + 1024] != i)
  45       abort ();
  46   return 0;
  47 }
  48
  49 /* { dg-final { scan-tree-dump-times "note: vectorized 1 loops" 1 "vect" { target avx_runtime } } } */