gcc/testsuite/gcc.dg/vect/pr97081-2.c

   1 /* PR tree-optimization/97081 */
   2
   3 #include "tree-vect.h"
   4
   5 unsigned short s[1024];
   6 unsigned char c[1024];
   7
   8 __attribute__((noipa)) void
   9 foo (int n)
  10 {
  11   for (int i = 0; i < 1024; i++)
  12     s[i] = (s[i] << n) | (s[i] >> (__SIZEOF_SHORT__ * __CHAR_BIT__ - n));
  13   for (int i = 0; i < 1024; i++)
  14     c[i] = (c[i] << n) | (c[i] >> (__CHAR_BIT__ - n));
  15 }
  16
  17 int
  18 main ()
  19 {
  20   check_vect ();
  21   for (int i = 0; i < 1024; i++)
  22     {
  23       s[i] = i;
  24       c[i] = i;
  25     }
  26   foo (3);
  27 #pragma GCC novector
  28   for (int i = 0; i < 1024; i++)
  29     if (s[i] != (unsigned short) ((i << 3) | (i >> (__SIZEOF_SHORT__ * __CHAR_BIT__ - 3)))
  30         || c[i] != (unsigned char) ((((unsigned char) i) << 3) | (((unsigned char) i) >> (__CHAR_BIT__ - 3))))
  31       __builtin_abort ();
  32   return 0;
  33 }