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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.c-torture/] [execute/] [builtin-prefetch-2.c] - Blame information for rev 298

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Line No. Rev Author Line
1 297 jeremybenn 
/* Test that __builtin_prefetch does no harm.
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   Prefetch data using a variety of storage classes and address
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   expressions.  */
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int glob_int_arr[100];
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int *glob_ptr_int = glob_int_arr;
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int glob_int = 4;
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static stat_int_arr[100];
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static int *stat_ptr_int = stat_int_arr;
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static int stat_int;
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struct S {
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  int a;
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  short b, c;
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  char d[8];
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  struct S *next;
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};
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struct S str;
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struct S *ptr_str = &str;
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/* Prefetch global variables using the address of the variable.  */
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void
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simple_global ()
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{
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  __builtin_prefetch (glob_int_arr, 0, 0);
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  __builtin_prefetch (glob_ptr_int, 0, 0);
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  __builtin_prefetch (&glob_int, 0, 0);
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}
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/* Prefetch file-level static variables using the address of the variable.  */
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void
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simple_file ()
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{
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  __builtin_prefetch (stat_int_arr, 0, 0);
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  __builtin_prefetch (stat_ptr_int, 0, 0);
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  __builtin_prefetch (&stat_int, 0, 0);
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}
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/* Prefetch local static variables using the address of the variable.  */
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void
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simple_static_local ()
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{
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  static int gx[100];
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  static int *hx = gx;
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  static int ix;
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  __builtin_prefetch (gx, 0, 0);
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  __builtin_prefetch (hx, 0, 0);
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  __builtin_prefetch (&ix, 0, 0);
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}
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/* Prefetch local stack variables using the address of the variable.  */
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void
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simple_local ()
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{
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  int gx[100];
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  int *hx = gx;
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  int ix;
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  __builtin_prefetch (gx, 0, 0);
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  __builtin_prefetch (hx, 0, 0);
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  __builtin_prefetch (&ix, 0, 0);
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}
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/* Prefetch arguments using the address of the variable.  */
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void
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simple_arg (int g[100], int *h, int i)
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{
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  __builtin_prefetch (g, 0, 0);
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  __builtin_prefetch (h, 0, 0);
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  __builtin_prefetch (&i, 0, 0);
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}
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/* Prefetch using address expressions involving global variables.  */
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void
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expr_global (void)
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{
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  __builtin_prefetch (&str, 0, 0);
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  __builtin_prefetch (ptr_str, 0, 0);
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  __builtin_prefetch (&str.b, 0, 0);
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  __builtin_prefetch (&ptr_str->b, 0, 0);
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  __builtin_prefetch (&str.d, 0, 0);
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  __builtin_prefetch (&ptr_str->d, 0, 0);
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  __builtin_prefetch (str.next, 0, 0);
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  __builtin_prefetch (ptr_str->next, 0, 0);
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  __builtin_prefetch (str.next->d, 0, 0);
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  __builtin_prefetch (ptr_str->next->d, 0, 0);
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  __builtin_prefetch (&glob_int_arr, 0, 0);
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  __builtin_prefetch (glob_ptr_int, 0, 0);
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  __builtin_prefetch (&glob_int_arr[2], 0, 0);
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  __builtin_prefetch (&glob_ptr_int[3], 0, 0);
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  __builtin_prefetch (glob_int_arr+3, 0, 0);
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  __builtin_prefetch (glob_int_arr+glob_int, 0, 0);
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  __builtin_prefetch (glob_ptr_int+5, 0, 0);
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  __builtin_prefetch (glob_ptr_int+glob_int, 0, 0);
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}
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/* Prefetch using address expressions involving local variables.  */
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void
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expr_local (void)
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{
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  int b[10];
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  int *pb = b;
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  struct S t;
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  struct S *pt = &t;
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  int j = 4;
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  __builtin_prefetch (&t, 0, 0);
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  __builtin_prefetch (pt, 0, 0);
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  __builtin_prefetch (&t.b, 0, 0);
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  __builtin_prefetch (&pt->b, 0, 0);
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  __builtin_prefetch (&t.d, 0, 0);
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  __builtin_prefetch (&pt->d, 0, 0);
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  __builtin_prefetch (t.next, 0, 0);
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  __builtin_prefetch (pt->next, 0, 0);
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  __builtin_prefetch (t.next->d, 0, 0);
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  __builtin_prefetch (pt->next->d, 0, 0);
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  __builtin_prefetch (&b, 0, 0);
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  __builtin_prefetch (pb, 0, 0);
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  __builtin_prefetch (&b[2], 0, 0);
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  __builtin_prefetch (&pb[3], 0, 0);
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  __builtin_prefetch (b+3, 0, 0);
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  __builtin_prefetch (b+j, 0, 0);
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  __builtin_prefetch (pb+5, 0, 0);
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  __builtin_prefetch (pb+j, 0, 0);
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}
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int
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main ()
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{
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  simple_global ();
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  simple_file ();
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  simple_static_local ();
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  simple_local ();
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  simple_arg (glob_int_arr, glob_ptr_int, glob_int);
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  str.next = &str;
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  expr_global ();
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  expr_local ();
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  exit (0);
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}

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