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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.c-torture/] [execute/] [builtin-prefetch-4.c] - Blame information for rev 149

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Line No. Rev Author Line
1 149 jeremybenn 
/* Test that __builtin_prefetch does no harm.
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   Check that the expression containing the address to prefetch is
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   evaluated if it has side effects, even if the target does not support
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   data prefetch.  Check changes to pointers and to array indices that are
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   either global variables or arguments.  */
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#define ARRSIZE 100
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int arr[ARRSIZE];
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int *ptr = &arr[20];
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int arrindex = 4;
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/* Check that assignment within a prefetch argument is evaluated.  */
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int
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assign_arg_ptr (int *p)
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{
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  int *q;
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  __builtin_prefetch ((q = p), 0, 0);
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  return q == p;
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}
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int
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assign_glob_ptr (void)
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{
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  int *q;
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  __builtin_prefetch ((q = ptr), 0, 0);
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  return q == ptr;
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}
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int
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assign_arg_idx (int *p, int i)
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{
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  int j;
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  __builtin_prefetch (&p[j = i], 0, 0);
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  return j == i;
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}
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int
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assign_glob_idx (void)
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{
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  int j;
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  __builtin_prefetch (&ptr[j = arrindex], 0, 0);
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  return j == arrindex;
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}
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/* Check that pre/post increment/decrement within a prefetch argument are
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   evaluated.  */
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int
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preinc_arg_ptr (int *p)
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{
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  int *q;
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  q = p + 1;
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  __builtin_prefetch (++p, 0, 0);
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  return p == q;
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}
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int
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preinc_glob_ptr (void)
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{
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  int *q;
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  q = ptr + 1;
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  __builtin_prefetch (++ptr, 0, 0);
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  return ptr == q;
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}
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int
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postinc_arg_ptr (int *p)
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{
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  int *q;
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  q = p + 1;
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  __builtin_prefetch (p++, 0, 0);
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  return p == q;
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}
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int
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postinc_glob_ptr (void)
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{
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  int *q;
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  q = ptr + 1;
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  __builtin_prefetch (ptr++, 0, 0);
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  return ptr == q;
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}
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int
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predec_arg_ptr (int *p)
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{
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  int *q;
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  q = p - 1;
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  __builtin_prefetch (--p, 0, 0);
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  return p == q;
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}
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int
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predec_glob_ptr (void)
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{
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  int *q;
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  q = ptr - 1;
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  __builtin_prefetch (--ptr, 0, 0);
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  return ptr == q;
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}
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int
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postdec_arg_ptr (int *p)
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{
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  int *q;
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  q = p - 1;
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  __builtin_prefetch (p--, 0, 0);
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  return p == q;
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}
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int
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postdec_glob_ptr (void)
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{
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  int *q;
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  q = ptr - 1;
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  __builtin_prefetch (ptr--, 0, 0);
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  return ptr == q;
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}
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int
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preinc_arg_idx (int *p, int i)
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{
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  int j = i + 1;
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  __builtin_prefetch (&p[++i], 0, 0);
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  return i == j;
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}
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int
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preinc_glob_idx (void)
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{
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  int j = arrindex + 1;
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  __builtin_prefetch (&ptr[++arrindex], 0, 0);
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  return arrindex == j;
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}
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int
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postinc_arg_idx (int *p, int i)
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{
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  int j = i + 1;
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  __builtin_prefetch (&p[i++], 0, 0);
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  return i == j;
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}
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int
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postinc_glob_idx (void)
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{
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  int j = arrindex + 1;
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  __builtin_prefetch (&ptr[arrindex++], 0, 0);
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  return arrindex == j;
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}
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int
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predec_arg_idx (int *p, int i)
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{
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  int j = i - 1;
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  __builtin_prefetch (&p[--i], 0, 0);
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  return i == j;
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}
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int
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predec_glob_idx (void)
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{
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  int j = arrindex - 1;
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  __builtin_prefetch (&ptr[--arrindex], 0, 0);
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  return arrindex == j;
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}
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int
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postdec_arg_idx (int *p, int i)
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{
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  int j = i - 1;
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  __builtin_prefetch (&p[i--], 0, 0);
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  return i == j;
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}
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int
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postdec_glob_idx (void)
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{
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  int j = arrindex - 1;
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  __builtin_prefetch (&ptr[arrindex--], 0, 0);
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  return arrindex == j;
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}
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/* Check that function calls within the first prefetch argument are
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   evaluated.  */
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int getptrcnt = 0;
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int *
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getptr (int *p)
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{
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  getptrcnt++;
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  return p + 1;
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}
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int
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funccall_arg_ptr (int *p)
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{
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  __builtin_prefetch (getptr (p), 0, 0);
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  return getptrcnt == 1;
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}
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int getintcnt = 0;
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int
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getint (int i)
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{
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  getintcnt++;
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  return i + 1;
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}
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int
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funccall_arg_idx (int *p, int i)
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{
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  __builtin_prefetch (&p[getint (i)], 0, 0);
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  return getintcnt == 1;
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}
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int
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main ()
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{
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  if (!assign_arg_ptr (ptr))
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    abort ();
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  if (!assign_glob_ptr ())
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    abort ();
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  if (!assign_arg_idx (ptr, 4))
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    abort ();
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  if (!assign_glob_idx ())
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    abort ();
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  if (!preinc_arg_ptr (ptr))
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    abort ();
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  if (!preinc_glob_ptr ())
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    abort ();
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  if (!postinc_arg_ptr (ptr))
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    abort ();
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  if (!postinc_glob_ptr ())
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    abort ();
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  if (!predec_arg_ptr (ptr))
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    abort ();
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  if (!predec_glob_ptr ())
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    abort ();
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  if (!postdec_arg_ptr (ptr))
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    abort ();
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  if (!postdec_glob_ptr ())
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    abort ();
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  if (!preinc_arg_idx (ptr, 3))
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    abort ();
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  if (!preinc_glob_idx ())
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    abort ();
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  if (!postinc_arg_idx (ptr, 3))
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    abort ();
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  if (!postinc_glob_idx ())
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    abort ();
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  if (!predec_arg_idx (ptr, 3))
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    abort ();
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  if (!predec_glob_idx ())
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    abort ();
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  if (!postdec_arg_idx (ptr, 3))
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    abort ();
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  if (!postdec_glob_idx ())
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    abort ();
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  if (!funccall_arg_ptr (ptr))
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    abort ();
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  if (!funccall_arg_idx (ptr, 3))
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    abort ();
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  exit (0);
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}

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