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