gcc/testsuite/gcc.dg/vect/slp-1.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 128
   7
   8 int
   9 main1 ()
  10 {
  11   int i;
  12   unsigned short out[N*8];
  13
  14   for (i = 0; i < N; i++)
  15     {
  16       out[i*4] = 8;
  17       out[i*4 + 1] = 18;
  18       out[i*4 + 2] = 28;
  19       out[i*4 + 3] = 38;
  20     }
  21
  22   /* check results:  */
  23   for (i = 0; i < N; i++)
  24     {
  25       if (out[i*4] != 8
  26          || out[i*4 + 1] != 18
  27          || out[i*4 + 2] != 28
  28          || out[i*4 + 3] != 38)
  29         abort ();
  30     }
  31
  32   for (i = 0; i < N; i++)
  33     {
  34       out[i*8] = 8;
  35       out[i*8 + 1] = 7;
  36       out[i*8 + 2] = 81;
  37       out[i*8 + 3] = 28;
  38       out[i*8 + 4] = 18;
  39       out[i*8 + 5] = 85;
  40       out[i*8 + 6] = 5;
  41       out[i*8 + 7] = 4;
  42     }
  43
  44   /* check results:  */
  45   for (i = 0; i < N; i++)
  46     {
  47       if (out[i*8] != 8
  48          || out[i*8 + 1] != 7
  49          || out[i*8 + 2] != 81
  50          || out[i*8 + 3] != 28
  51          || out[i*8 + 4] != 18
  52          || out[i*8 + 5] != 85
  53          || out[i*8 + 6] != 5
  54          || out[i*8 + 7] != 4)
  55         abort ();
  56     }
  57
  58   /* SLP with unrolling by 8.  */
  59   for (i = 0; i < N; i++)
  60     {
  61       out[i*5] = 8;
  62       out[i*5 + 1] = 7;
  63       out[i*5 + 2] = 81;
  64       out[i*5 + 3] = 28;
  65       out[i*5 + 4] = 18;
  66     }
  67
  68   /* check results:  */
  69   for (i = 0; i < N; i++)
  70     {
  71       if (out[i*5] != 8
  72          || out[i*5 + 1] != 7
  73          || out[i*5 + 2] != 81
  74          || out[i*5 + 3] != 28
  75          || out[i*5 + 4] != 18)
  76         abort ();
  77     }
  78
  79   /* SLP with unrolling by 8.  */
  80   for (i = 0; i < N/2; i++)
  81     {
  82       out[i*9] = 8;
  83       out[i*9 + 1] = 7;
  84       out[i*9 + 2] = 81;
  85       out[i*9 + 3] = 28;
  86       out[i*9 + 4] = 18;
  87       out[i*9 + 5] = 85;
  88       out[i*9 + 6] = 5;
  89       out[i*9 + 7] = 4;
  90       out[i*9 + 8] = 14;
  91     }
  92
  93   /* check results:  */
  94   for (i = 0; i < N/2; i++)
  95     {
  96       if (out[i*9] != 8
  97          || out[i*9 + 1] != 7
  98          || out[i*9 + 2] != 81
  99          || out[i*9 + 3] != 28
 100          || out[i*9 + 4] != 18
 101          || out[i*9 + 5] != 85
 102          || out[i*9 + 6] != 5
 103          || out[i*9 + 7] != 4
 104          || out[i*9 + 8] != 14)
 105         abort ();
 106     }
 107
 108   return 0;
 109 }
 110
 111 int main (void)
 112 {
 113   check_vect ();
 114
 115   main1 ();
 116
 117   return 0;
 118 }
 119
 120 /* { dg-final { scan-tree-dump-times "vectorized 4 loops" 1 "vect"  } } */
 121 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 4 "vect" { xfail vect_variable_length } } } */
 122