gcc/testsuite/gcc.dg/vect/slp-1.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 128
   8
   9 int
  10 main1 ()
  11 {
  12   int i;
  13   unsigned short out[N*8];
  14
  15   for (i = 0; i < N; i++)
  16     {
  17       out[i*4] = 8;
  18       out[i*4 + 1] = 18;
  19       out[i*4 + 2] = 28;
  20       out[i*4 + 3] = 38;
  21     }
  22
  23   /* check results:  */
  24   for (i = 0; i < N; i++)
  25     {
  26       if (out[i*4] != 8
  27          || out[i*4 + 1] != 18
  28          || out[i*4 + 2] != 28
  29          || out[i*4 + 3] != 38)
  30         abort ();
  31     }
  32
  33   for (i = 0; i < N; i++)
  34     {
  35       out[i*8] = 8;
  36       out[i*8 + 1] = 7;
  37       out[i*8 + 2] = 81;
  38       out[i*8 + 3] = 28;
  39       out[i*8 + 4] = 18;
  40       out[i*8 + 5] = 85;
  41       out[i*8 + 6] = 5;
  42       out[i*8 + 7] = 4;
  43     }
  44
  45   /* check results:  */
  46   for (i = 0; i < N; i++)
  47     {
  48       if (out[i*8] != 8
  49          || out[i*8 + 1] != 7
  50          || out[i*8 + 2] != 81
  51          || out[i*8 + 3] != 28
  52          || out[i*8 + 4] != 18
  53          || out[i*8 + 5] != 85
  54          || out[i*8 + 6] != 5
  55          || out[i*8 + 7] != 4)
  56         abort ();
  57     }
  58
  59   /* SLP with unrolling by 8.  */
  60   for (i = 0; i < N; i++)
  61     {
  62       out[i*5] = 8;
  63       out[i*5 + 1] = 7;
  64       out[i*5 + 2] = 81;
  65       out[i*5 + 3] = 28;
  66       out[i*5 + 4] = 18;
  67     }
  68
  69   /* check results:  */
  70   for (i = 0; i < N; i++)
  71     {
  72       if (out[i*5] != 8
  73          || out[i*5 + 1] != 7
  74          || out[i*5 + 2] != 81
  75          || out[i*5 + 3] != 28
  76          || out[i*5 + 4] != 18)
  77         abort ();
  78     }
  79
  80   /* SLP with unrolling by 8.  */
  81   for (i = 0; i < N/2; i++)
  82     {
  83       out[i*9] = 8;
  84       out[i*9 + 1] = 7;
  85       out[i*9 + 2] = 81;
  86       out[i*9 + 3] = 28;
  87       out[i*9 + 4] = 18;
  88       out[i*9 + 5] = 85;
  89       out[i*9 + 6] = 5;
  90       out[i*9 + 7] = 4;
  91       out[i*9 + 8] = 14;
  92     }
  93
  94   /* check results:  */
  95   for (i = 0; i < N/2; i++)
  96     {
  97       if (out[i*9] != 8
  98          || out[i*9 + 1] != 7
  99          || out[i*9 + 2] != 81
 100          || out[i*9 + 3] != 28
 101          || out[i*9 + 4] != 18
 102          || out[i*9 + 5] != 85
 103          || out[i*9 + 6] != 5
 104          || out[i*9 + 7] != 4
 105          || out[i*9 + 8] != 14)
 106         abort ();
 107     }
 108
 109   return 0;
 110 }
 111
 112 int main (void)
 113 {
 114   check_vect ();
 115
 116   main1 ();
 117
 118   return 0;
 119 }
 120
 121 /* { dg-final { scan-tree-dump-times "vectorized 4 loops" 1 "vect"  } } */
 122 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 4 "vect"  } } */
 123 /* { dg-final { cleanup-tree-dump "vect" } } */
 124