gcc/testsuite/gcc.c-torture/unsorted/bcopy.c

   1 void
   2 bcopy1 (s, d, c)
   3      long long *s;
   4      long long *d;
   5      int c;
   6 {
   7   int i;
   8   c = c / 8;
   9   for (i = 0;  i < c;  i++)
  10     d[i] = s[i];
  11 }
  12
  13 void
  14 bcopy2 (s, d, c)
  15      long *s;
  16      long *d;
  17      int c;
  18 {
  19   int i;
  20   c = c / 4;
  21   for (i = 0;  i < c;  i++)
  22     d[i] = s[i];
  23 }
  24
  25
  26 void
  27 bcopy3 (s, d, c)
  28      char *s;
  29      char *d;
  30      int c;
  31 {
  32   long long z0, z1;
  33   int r = d - s;
  34
  35   int i;
  36
  37   c /= 16;
  38
  39   z0 = *((long long *) s);
  40   s += 8;
  41   z1 = *((long long *) s);
  42   s += 8;
  43   for (i = 0; i < c; i++)
  44     {
  45       *(long long *)(s + r) = z0;
  46       z0 = *((long long *) s);
  47       s += 8;
  48       *(long long *)(s + r) = z1;
  49       z1 = *((long long *) s);
  50       s += 8;
  51     }
  52 }
  53
  54 #if defined(STACK_SIZE) && STACK_SIZE < 16384
  55 #define BYTES STACK_SIZE
  56 #else
  57 #define BYTES 16384
  58 #endif
  59
  60 main ()
  61 {
  62   long long s[BYTES / 8];
  63   long long d[BYTES / 8];
  64   int i;
  65
  66   for (i = 1; i < 67108864 / BYTES; i++)
  67     bcopy (s, d, BYTES);
  68 }