gcc/testsuite/gcc.dg/vect/pr65947-8.c

   1 /* { dg-require-effective-target vect_condition } */
   2
   3 #include "tree-vect.h"
   4
   5 extern void abort (void) __attribute__ ((noreturn));
   6
   7 #define N 27
   8
   9 /* Condition reduction with multiple types in the comparison.  Will fail to
  10    vectorize.  */
  11
  12 int
  13 condition_reduction (char *a, int min_v)
  14 {
  15   int last = N + 65;
  16
  17   for (int i = 0; i < N; i++)
  18     if (a[i] < min_v)
  19       last = a[i];
  20
  21   return last;
  22 }
  23
  24
  25 int
  26 main (void)
  27 {
  28   char a[N] = {
  29   1, 28, 3, 48, 5, 68, 7, -88, 89, 180,
  30   121, 122, -123, 124, 12, -12, 12, 67, 84, 122,
  31   67, 55, 112, 22, 45, 23, 111
  32   };
  33
  34   check_vect ();
  35
  36   int ret = condition_reduction (a, 16);
  37
  38   if (ret != 12)
  39     abort ();
  40
  41   return 0;
  42 }
  43
  44 /* { dg-final { scan-tree-dump-not "LOOP VECTORIZED" "vect" } } */
  45 /* { dg-final { scan-tree-dump "multiple types in double reduction or condition reduction" "vect" } } */