gcc/testsuite/gcc.dg/vect/slp-34.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 8
   8
   9 int
  10 main1 ()
  11 {
  12   int i;
  13   unsigned short out[N*8];
  14   unsigned short 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};
  15   unsigned short in2[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};
  16   unsigned short out2[N*8];
  17
  18   /* SLP with unrolling by 8.  */
  19   for (i = 0; i < N; i++)
  20     {
  21       out[i*3] = in[i*3] + 5;
  22       out[i*3 + 1] = in[i*3 + 1] + 6;
  23       out[i*3 + 2] = in[i*3 + 2] + 16;
  24
  25       out2[i*5] = in2[i*5] + 2;
  26       out2[i*5 + 1] = in2[i*5 + 1] + 2;
  27       out2[i*5 + 2] = in2[i*5 + 2] + 1;
  28       out2[i*5 + 3] = in2[i*5 + 3] + 3;
  29       out2[i*5 + 4] = in2[i*5 + 4] + 13;
  30     }
  31
  32   /* check results:  */
  33   for (i = 0; i < N; i++)
  34     {
  35       if (out[i*3] != in[i*3] + 5
  36           || out[i*3 + 1] != in[i*3 + 1] + 6
  37           || out[i*3 + 2] != in[i*3 + 2] + 16
  38           || out2[i*5] != in2[i*5] + 2
  39           || out2[i*5 + 1] != in2[i*5 + 1] + 2
  40           || out2[i*5 + 2] != in2[i*5 + 2] + 1
  41           || out2[i*5 + 3] != in2[i*5 + 3] + 3
  42           || out2[i*5 + 4] != in2[i*5 + 4] + 13)
  43         abort ();
  44     }
  45
  46   return 0;
  47 }
  48
  49 int main (void)
  50 {
  51   check_vect ();
  52
  53   main1 ();
  54
  55   return 0;
  56 }
  57
  58 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  59 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 2 "vect"  } } */
  60 /* { dg-final { cleanup-tree-dump "vect" } } */
  61