gcc/testsuite/gcc.dg/vect/bb-slp-2.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include <stdio.h>
   5 #include "tree-vect.h"
   6
   7 #define N 16
   8
   9 unsigned int out[N*8];
  10 unsigned int in[N*8] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63};
  11
  12 __attribute__ ((noinline)) int
  13 main1 (int dummy)
  14 {
  15   int i;
  16   unsigned int *pin = &in[0];
  17   unsigned int *pout = &out[0];
  18
  19   for (i = 0; i < N*2; i++)
  20     {
  21       *pout++ = *pin++;
  22       *pout++ = *pin++;
  23       *pout++ = *pin++;
  24       *pout++ = *pin++;
  25
  26       /* Avoid loop vectorization.  */
  27       if (dummy == 32)
  28         abort ();
  29     }
  30
  31   /* check results:  */
  32   for (i = 0; i < N; i++)
  33     {
  34       if (out[i*8] !=  in[i*8]
  35          || out[i*8 + 1] != in[i*8 + 1]
  36          || out[i*8 + 2] != in[i*8 + 2]
  37          || out[i*8 + 3] != in[i*8 + 3]
  38          || out[i*8 + 4] != in[i*8 + 4]
  39          || out[i*8 + 5] != in[i*8 + 5]
  40          || out[i*8 + 6] != in[i*8 + 6]
  41          || out[i*8 + 7] != in[i*8 + 7])
  42         abort ();
  43     }
  44
  45   return 0;
  46 }
  47
  48 int main (void)
  49 {
  50   check_vect ();
  51
  52   main1 (33);
  53
  54   return 0;
  55 }
  56
  57 /* { dg-final { scan-tree-dump-times "basic block vectorized using SLP" 1 "slp" } } */
  58 /* { dg-final { cleanup-tree-dump "slp" } } */
  59