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

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