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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.c-torture/] [execute/] [builtin-prefetch-2.c] - Rev 308
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/* Test that __builtin_prefetch does no harm. Prefetch data using a variety of storage classes and address expressions. */ int glob_int_arr[100]; int *glob_ptr_int = glob_int_arr; int glob_int = 4; static stat_int_arr[100]; static int *stat_ptr_int = stat_int_arr; static int stat_int; struct S { int a; short b, c; char d[8]; struct S *next; }; struct S str; struct S *ptr_str = &str; /* Prefetch global variables using the address of the variable. */ void simple_global () { __builtin_prefetch (glob_int_arr, 0, 0); __builtin_prefetch (glob_ptr_int, 0, 0); __builtin_prefetch (&glob_int, 0, 0); } /* Prefetch file-level static variables using the address of the variable. */ void simple_file () { __builtin_prefetch (stat_int_arr, 0, 0); __builtin_prefetch (stat_ptr_int, 0, 0); __builtin_prefetch (&stat_int, 0, 0); } /* Prefetch local static variables using the address of the variable. */ void simple_static_local () { static int gx[100]; static int *hx = gx; static int ix; __builtin_prefetch (gx, 0, 0); __builtin_prefetch (hx, 0, 0); __builtin_prefetch (&ix, 0, 0); } /* Prefetch local stack variables using the address of the variable. */ void simple_local () { int gx[100]; int *hx = gx; int ix; __builtin_prefetch (gx, 0, 0); __builtin_prefetch (hx, 0, 0); __builtin_prefetch (&ix, 0, 0); } /* Prefetch arguments using the address of the variable. */ void simple_arg (int g[100], int *h, int i) { __builtin_prefetch (g, 0, 0); __builtin_prefetch (h, 0, 0); __builtin_prefetch (&i, 0, 0); } /* Prefetch using address expressions involving global variables. */ void expr_global (void) { __builtin_prefetch (&str, 0, 0); __builtin_prefetch (ptr_str, 0, 0); __builtin_prefetch (&str.b, 0, 0); __builtin_prefetch (&ptr_str->b, 0, 0); __builtin_prefetch (&str.d, 0, 0); __builtin_prefetch (&ptr_str->d, 0, 0); __builtin_prefetch (str.next, 0, 0); __builtin_prefetch (ptr_str->next, 0, 0); __builtin_prefetch (str.next->d, 0, 0); __builtin_prefetch (ptr_str->next->d, 0, 0); __builtin_prefetch (&glob_int_arr, 0, 0); __builtin_prefetch (glob_ptr_int, 0, 0); __builtin_prefetch (&glob_int_arr[2], 0, 0); __builtin_prefetch (&glob_ptr_int[3], 0, 0); __builtin_prefetch (glob_int_arr+3, 0, 0); __builtin_prefetch (glob_int_arr+glob_int, 0, 0); __builtin_prefetch (glob_ptr_int+5, 0, 0); __builtin_prefetch (glob_ptr_int+glob_int, 0, 0); } /* Prefetch using address expressions involving local variables. */ void expr_local (void) { int b[10]; int *pb = b; struct S t; struct S *pt = &t; int j = 4; __builtin_prefetch (&t, 0, 0); __builtin_prefetch (pt, 0, 0); __builtin_prefetch (&t.b, 0, 0); __builtin_prefetch (&pt->b, 0, 0); __builtin_prefetch (&t.d, 0, 0); __builtin_prefetch (&pt->d, 0, 0); __builtin_prefetch (t.next, 0, 0); __builtin_prefetch (pt->next, 0, 0); __builtin_prefetch (t.next->d, 0, 0); __builtin_prefetch (pt->next->d, 0, 0); __builtin_prefetch (&b, 0, 0); __builtin_prefetch (pb, 0, 0); __builtin_prefetch (&b[2], 0, 0); __builtin_prefetch (&pb[3], 0, 0); __builtin_prefetch (b+3, 0, 0); __builtin_prefetch (b+j, 0, 0); __builtin_prefetch (pb+5, 0, 0); __builtin_prefetch (pb+j, 0, 0); } int main () { simple_global (); simple_file (); simple_static_local (); simple_local (); simple_arg (glob_int_arr, glob_ptr_int, glob_int); str.next = &str; expr_global (); expr_local (); exit (0); }
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