gcc/testsuite/gcc.dg/vect/slp-3-big-array.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 96
   7
   8 unsigned short in[N*8];
   9
  10 int
  11 main1 ()
  12 {
  13   int i;
  14   unsigned short out[N*8];
  15
  16   for (i = 0; i < N*8; i++)
  17     {
  18       in[i] = i&63;
  19       asm volatile ("" ::: "memory");
  20     }
  21
  22   for (i = 0; i < N; i++)
  23     {
  24       out[i*8] = in[i*8];
  25       out[i*8 + 1] = in[i*8 + 1];
  26       out[i*8 + 2] = in[i*8 + 2];
  27       out[i*8 + 3] = in[i*8 + 3];
  28       out[i*8 + 4] = in[i*8 + 4];
  29       out[i*8 + 5] = in[i*8 + 5];
  30       out[i*8 + 6] = in[i*8 + 6];
  31       out[i*8 + 7] = in[i*8 + 7];
  32     }
  33
  34   /* check results:  */
  35 #pragma GCC novector
  36   for (i = 0; i < N; i++)
  37     {
  38       if (out[i*8] !=  in[i*8]
  39          || out[i*8 + 1] != in[i*8 + 1]
  40          || out[i*8 + 2] != in[i*8 + 2]
  41          || out[i*8 + 3] != in[i*8 + 3]
  42          || out[i*8 + 4] != in[i*8 + 4]
  43          || out[i*8 + 5] != in[i*8 + 5]
  44          || out[i*8 + 6] != in[i*8 + 6]
  45          || out[i*8 + 7] != in[i*8 + 7])
  46         abort ();
  47     }
  48
  49   for (i = 0; i < N*2; i++)
  50     {
  51       out[i*4] = in[i*4];
  52       out[i*4 + 1] = in[i*4 + 1];
  53       out[i*4 + 2] = in[i*4 + 2];
  54       out[i*4 + 3] = in[i*4 + 3];
  55     }
  56
  57   /* check results:  */
  58 #pragma GCC novector
  59   for (i = 0; i < N*2; i++)
  60     {
  61       if (out[i*4] !=  in[i*4]
  62          || out[i*4 + 1] != in[i*4 + 1]
  63          || out[i*4 + 2] != in[i*4 + 2]
  64          || out[i*4 + 3] != in[i*4 + 3])
  65         abort ();
  66     }
  67
  68   for (i = 0; i < N/2; i++)
  69     {
  70       out[i*16] = in[i*16];
  71       out[i*16 + 1] = in[i*16 + 1];
  72       out[i*16 + 2] = in[i*16 + 2];
  73       out[i*16 + 3] = in[i*16 + 3];
  74       out[i*16 + 4] = in[i*16 + 4];
  75       out[i*16 + 5] = in[i*16 + 5];
  76       out[i*16 + 6] = in[i*16 + 6];
  77       out[i*16 + 7] = in[i*16 + 7];
  78       out[i*16 + 8] = in[i*16 + 8];
  79       out[i*16 + 9] = in[i*16 + 9];
  80       out[i*16 + 10] = in[i*16 + 10];
  81       out[i*16 + 11] = in[i*16 + 11];
  82       out[i*16 + 12] = in[i*16 + 12];
  83       out[i*16 + 13] = in[i*16 + 13];
  84       out[i*16 + 14] = in[i*16 + 14];
  85       out[i*16 + 15] = in[i*16 + 15];
  86     }
  87
  88   /* check results:  */
  89 #pragma GCC novector
  90   for (i = 0; i < N/2; i++)
  91     {
  92       if (out[i*16] !=  in[i*16]
  93          || out[i*16 + 1] != in[i*16 + 1]
  94          || out[i*16 + 2] != in[i*16 + 2]
  95          || out[i*16 + 3] != in[i*16 + 3]
  96          || out[i*16 + 4] != in[i*16 + 4]
  97          || out[i*16 + 5] != in[i*16 + 5]
  98          || out[i*16 + 6] != in[i*16 + 6]
  99          || out[i*16 + 7] != in[i*16 + 7]
 100          || out[i*16 + 8] != in[i*16 + 8]
 101          || out[i*16 + 9] != in[i*16 + 9]
 102          || out[i*16 + 10] != in[i*16 + 10]
 103          || out[i*16 + 11] != in[i*16 + 11]
 104          || out[i*16 + 12] != in[i*16 + 12]
 105          || out[i*16 + 13] != in[i*16 + 13]
 106          || out[i*16 + 14] != in[i*16 + 14]
 107          || out[i*16 + 15] != in[i*16 + 15])
 108         abort ();
 109     }
 110
 111   /* SLP with unrolling by 8.  */
 112   for (i = 0; i < N/4; i++)
 113     {
 114       out[i*9] = in[i*9];
 115       out[i*9 + 1] = in[i*9 + 1];
 116       out[i*9 + 2] = in[i*9 + 2];
 117       out[i*9 + 3] = in[i*9 + 3];
 118       out[i*9 + 4] = in[i*9 + 4];
 119       out[i*9 + 5] = in[i*9 + 5];
 120       out[i*9 + 6] = in[i*9 + 6];
 121       out[i*9 + 7] = in[i*9 + 7];
 122       out[i*9 + 8] = in[i*9 + 8];
 123     }
 124
 125   /* check results:  */
 126 #pragma GCC novector
 127   for (i = 0; i < N/4; i++)
 128     {
 129       if (out[i*9] !=  in[i*9]
 130          || out[i*9 + 1] != in[i*9 + 1]
 131          || out[i*9 + 2] != in[i*9 + 2]
 132          || out[i*9 + 3] != in[i*9 + 3]
 133          || out[i*9 + 4] != in[i*9 + 4]
 134          || out[i*9 + 5] != in[i*9 + 5]
 135          || out[i*9 + 6] != in[i*9 + 6]
 136          || out[i*9 + 7] != in[i*9 + 7]
 137          || out[i*9 + 8] != in[i*9 + 8])
 138         abort ();
 139     }
 140
 141
 142   return 0;
 143 }
 144
 145 int main (void)
 146 {
 147   check_vect ();
 148
 149   main1 ();
 150
 151   return 0;
 152 }
 153
 154 /* { dg-final { scan-tree-dump-times "vectorized 4 loops" 1 "vect" } } */
 155 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 4 "vect" } } */
 156