gcc/testsuite/gcc.dg/vect/pr65947-3.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 37
   8
   9 /* Non-simple condition reduction with additional variable and unsigned
  10    types.  */
  11
  12 unsigned int
  13 condition_reduction (unsigned int *a, unsigned int min_v, unsigned int *b)
  14 {
  15   unsigned int last = N + 65;
  16   unsigned int aval;
  17
  18   for (unsigned int i = 0; i < N; i++)
  19     {
  20       aval = a[i];
  21       if (b[i] < min_v)
  22         last = aval;
  23     }
  24   return last;
  25 }
  26
  27
  28 int
  29 main (void)
  30 {
  31   unsigned int a[N] = {
  32   31, 32, 33, 34, 35, 36, 37,
  33   1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
  34   21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
  35   11, 12, 13, 14, 15, 16, 17, 18, 19, 20
  36   };
  37   unsigned int b[N] = {
  38   11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
  39   21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
  40   1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
  41   31, 32, 33, 34, 35, 36, 37
  42   };
  43
  44   check_vect ();
  45
  46   unsigned int ret = condition_reduction (a, 16, b);
  47
  48   if (ret != 13)
  49     abort ();
  50
  51   return 0;
  52 }
  53
  54 /* { dg-final { scan-tree-dump-times "LOOP VECTORIZED" 2 "vect" } } */
  55 /* { dg-final { scan-tree-dump-times "optimizing condition reduction with FOLD_EXTRACT_LAST" 4 "vect" { target vect_fold_extract_last } } } */
  56 /* { dg-final { scan-tree-dump-not "condition expression based on integer induction." "vect" } } */