gcc/testsuite/gcc.dg/vect/slp-16.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 8
   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};
  10 unsigned int in2[N*16] = {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 unsigned int out2[N*16];
  12
  13 int
  14 main1 ()
  15 {
  16   int i;
  17   unsigned int a0, a1, a2, a3, a4, a5, a6, a7, b1, b0, b2, b3, b4, b5, b6, b7;
  18
  19   /* SLP group of size that is not a multiple of vector size.
  20      Unrolling by 2.  */
  21   for (i = 0; i < N; i++)
  22     {
  23       a0 = in[i*2] + 5;
  24       a1 = in[i*2 + 1] + 6;
  25
  26       b0 = a0 * 3;
  27       b1 = a1 * 2;
  28
  29       out[i*2] = b0 - 2;
  30       out[i*2 + 1] = b1 - 3;
  31
  32       out2[i*6] = in2[i*6] * 2;
  33       out2[i*6 + 1] = in2[i*6 + 1] * 3;
  34       out2[i*6 + 2] = in2[i*6 + 2] * 4;
  35       out2[i*6 + 3] = in2[i*6 + 3] * 2;
  36       out2[i*6 + 4] = in2[i*6 + 4] * 4;
  37       out2[i*6 + 5] = in2[i*6 + 5] * 3;
  38     }
  39
  40   /* check results:  */
  41   for (i = 0; i < N; i++)
  42     {
  43       if (out[i*2] !=  (in[i*2] + 5) * 3 - 2
  44          || out[i*2 + 1] != (in[i*2 + 1] + 6) * 2 - 3
  45          || out2[i*6] != in2[i*6] * 2
  46          || out2[i*6 + 1] != in2[i*6 + 1] * 3
  47          || out2[i*6 + 2] != in2[i*6 + 2] * 4
  48          || out2[i*6 + 3] != in2[i*6 + 3] * 2
  49          || out2[i*6 + 4] != in2[i*6 + 4] * 4
  50          || out2[i*6 + 5] != in2[i*6 + 5] * 3)
  51         abort ();
  52     }
  53
  54
  55
  56   return 0;
  57 }
  58
  59 int main (void)
  60 {
  61   check_vect ();
  62
  63   main1 ();
  64
  65   return 0;
  66 }
  67
  68 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect"  { target vect_int_mult } } } */
  69 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 2 "vect" { target vect_int_mult } } } */
  70