gcc/testsuite/gcc.dg/vect/pr57741-3.c

   1 /* PR tree-optimization/57741 */
   2 /* { dg-do run } */
   3 /* { dg-require-effective-target vect_float } */
   4 /* { dg-additional-options "-ffast-math" } */
   5
   6 #include "tree-vect.h"
   7
   8 extern void abort (void);
   9
  10 float p[1024] __attribute__((aligned (32))) = { 17.0f };
  11 float q[1024] __attribute__((aligned (32))) = { 17.0f };
  12 char r[1024] __attribute__((aligned (32))) = { 1 };
  13
  14 __attribute__((noinline, noclone)) void
  15 foo (float x)
  16 {
  17   int i;
  18   float f = 1.0f, g = 2.0f;
  19   for (i = 0; i < 1024; i++)
  20     {
  21       p[i] = f;
  22       f += x;
  23       q[i] = g;
  24       g += 0.5f;
  25       r[i]++;
  26     }
  27 }
  28
  29 int
  30 main ()
  31 {
  32   int i;
  33   check_vect ();
  34   r[0] = 0;
  35   foo (1.5f);
  36   for (i = 0; i < 1024; i++)
  37     if (p[i] != 1.0f + i * 1.5f || q[i] != 2.0f + i * 0.5f || r[i] != 1)
  38       abort ();
  39   return 0;
  40 }
  41
  42 /* { dg-final { scan-tree-dump-times "vectorized 1 loop" 1 "vect" } } */
  43 /* { dg-final { cleanup-tree-dump "vect" } } */