gcc/testsuite/gcc.target/i386/pr55845.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target avx } */
   3 /* { dg-options "-O3 -ffast-math -fschedule-insns -mavx -mvzeroupper" } */
   4
   5 #include "avx-check.h"
   6
   7 #define N 100
   8
   9 double
  10 __attribute__((noinline))
  11 foo (int size, double *y, double *x)
  12 {
  13   double sum = 0.0;
  14   int i;
  15
  16   for (i = 0; i < size; i++)
  17     sum += y[i] * x[i];
  18
  19   return sum;
  20 }
  21
  22 static void
  23 __attribute__ ((noinline))
  24 avx_test ()
  25 {
  26   double x[N], y[N];
  27   double s;
  28   int i;
  29
  30   for (i = 0; i < N; i++)
  31     {
  32       x[i] = i;
  33       y[i] = i;
  34     }
  35
  36   s = foo (N, y, x);
  37
  38   if (s != 328350.0)
  39     abort ();
  40 }