gcc/testsuite/gcc.dg/vect/slp-19c.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 int
   9 main1 ()
  10 {
  11   unsigned int i;
  12   unsigned int out[N*8];
  13   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};
  14   unsigned int ia[N*2], a0, a1, a2, a3;
  15
  16   /* The last stmt requires interleaving of not power of 2 size - not
  17      vectorizable.  */
  18   for (i = 0; i < N/2; i++)
  19     {
  20       out[i*12] = in[i*12];
  21       out[i*12 + 1] = in[i*12 + 1];
  22       out[i*12 + 2] = in[i*12 + 2];
  23       out[i*12 + 3] = in[i*12 + 3];
  24       out[i*12 + 4] = in[i*12 + 4];
  25       out[i*12 + 5] = in[i*12 + 5];
  26       out[i*12 + 6] = in[i*12 + 6];
  27       out[i*12 + 7] = in[i*12 + 7];
  28       out[i*12 + 8] = in[i*12 + 8];
  29       out[i*12 + 9] = in[i*12 + 9];
  30       out[i*12 + 10] = in[i*12 + 10];
  31       out[i*12 + 11] = in[i*12 + 11];
  32
  33       ia[i] = in[i*12 + 7];
  34     }
  35
  36   /* check results:  */
  37   for (i = 0; i < N/2; i++)
  38     {
  39       if (out[i*12] !=  in[i*12]
  40          || out[i*12 + 1] != in[i*12 + 1]
  41          || out[i*12 + 2] != in[i*12 + 2]
  42          || out[i*12 + 3] != in[i*12 + 3]
  43          || out[i*12 + 4] != in[i*12 + 4]
  44          || out[i*12 + 5] != in[i*12 + 5]
  45          || out[i*12 + 6] != in[i*12 + 6]
  46          || out[i*12 + 7] != in[i*12 + 7]
  47          || out[i*12 + 8] != in[i*12 + 8]
  48          || out[i*12 + 9] != in[i*12 + 9]
  49          || out[i*12 + 10] != in[i*12 + 10]
  50          || out[i*12 + 11] != in[i*12 + 11]
  51          || ia[i] != in[i*12 + 7])
  52         abort ();
  53     }
  54
  55   /* Hybrid SLP with unrolling by 2.  */
  56   for (i = 0; i < N; i++)
  57     {
  58       out[i*6] = in[i*6];
  59       out[i*6 + 1] = in[i*6 + 1];
  60       out[i*6 + 2] = in[i*6 + 2];
  61       out[i*6 + 3] = in[i*6 + 3];
  62       out[i*6 + 4] = in[i*6 + 4];
  63       out[i*6 + 5] = in[i*6 + 5];
  64
  65       ia[i] = i;
  66     }
  67
  68   /* check results:  */
  69   for (i = 0; i < N/2; i++)
  70     {
  71       if (out[i*6] !=  in[i*6]
  72          || out[i*6 + 1] != in[i*6 + 1]
  73          || out[i*6 + 2] != in[i*6 + 2]
  74          || out[i*6 + 3] != in[i*6 + 3]
  75          || out[i*6 + 4] != in[i*6 + 4]
  76          || out[i*6 + 5] != in[i*6 + 5]
  77          || ia[i] != i)
  78         abort ();
  79     }
  80
  81   return 0;
  82 }
  83
  84 int main (void)
  85 {
  86   check_vect ();
  87
  88   main1 ();
  89
  90   return 0;
  91 }
  92
  93 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  94 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" } } */
  95 /* { dg-final { cleanup-tree-dump "vect" } } */