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