gcc/testsuite/gcc.dg/vect/pr57741-2.c

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