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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.c-torture/] [execute/] [builtin-prefetch-3.c] - Rev 378
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/* Test that __builtin_prefetch does no harm. Prefetch data using a variety of storage classes and address expressions with volatile variables and pointers. */ int glob_int_arr[100]; int glob_int = 4; volatile int glob_vol_int_arr[100]; int * volatile glob_vol_ptr_int = glob_int_arr; volatile int *glob_ptr_vol_int = glob_vol_int_arr; volatile int * volatile glob_vol_ptr_vol_int = glob_vol_int_arr; volatile int glob_vol_int; static stat_int_arr[100]; static volatile int stat_vol_int_arr[100]; static int * volatile stat_vol_ptr_int = stat_int_arr; static volatile int *stat_ptr_vol_int = stat_vol_int_arr; static volatile int * volatile stat_vol_ptr_vol_int = stat_vol_int_arr; static volatile int stat_vol_int; struct S { int a; short b, c; char d[8]; struct S *next; }; struct S str; volatile struct S vol_str; struct S * volatile vol_ptr_str = &str; volatile struct S *ptr_vol_str = &vol_str; volatile struct S * volatile vol_ptr_vol_str = &vol_str; /* Prefetch volatile global variables using the address of the variable. */ void simple_vol_global () { __builtin_prefetch (glob_vol_int_arr, 0, 0); __builtin_prefetch (glob_vol_ptr_int, 0, 0); __builtin_prefetch (glob_ptr_vol_int, 0, 0); __builtin_prefetch (glob_vol_ptr_vol_int, 0, 0); __builtin_prefetch (&glob_vol_int, 0, 0); } /* Prefetch volatile static variables using the address of the variable. */ void simple_vol_file () { __builtin_prefetch (stat_vol_int_arr, 0, 0); __builtin_prefetch (stat_vol_ptr_int, 0, 0); __builtin_prefetch (stat_ptr_vol_int, 0, 0); __builtin_prefetch (stat_vol_ptr_vol_int, 0, 0); __builtin_prefetch (&stat_vol_int, 0, 0); } /* Prefetch using address expressions involving volatile global variables. */ void expr_vol_global (void) { __builtin_prefetch (&vol_str, 0, 0); __builtin_prefetch (ptr_vol_str, 0, 0); __builtin_prefetch (vol_ptr_str, 0, 0); __builtin_prefetch (vol_ptr_vol_str, 0, 0); __builtin_prefetch (&vol_str.b, 0, 0); __builtin_prefetch (&ptr_vol_str->b, 0, 0); __builtin_prefetch (&vol_ptr_str->b, 0, 0); __builtin_prefetch (&vol_ptr_vol_str->b, 0, 0); __builtin_prefetch (&vol_str.d, 0, 0); __builtin_prefetch (&vol_ptr_str->d, 0, 0); __builtin_prefetch (&ptr_vol_str->d, 0, 0); __builtin_prefetch (&vol_ptr_vol_str->d, 0, 0); __builtin_prefetch (vol_str.next, 0, 0); __builtin_prefetch (vol_ptr_str->next, 0, 0); __builtin_prefetch (ptr_vol_str->next, 0, 0); __builtin_prefetch (vol_ptr_vol_str->next, 0, 0); __builtin_prefetch (vol_str.next->d, 0, 0); __builtin_prefetch (vol_ptr_str->next->d, 0, 0); __builtin_prefetch (ptr_vol_str->next->d, 0, 0); __builtin_prefetch (vol_ptr_vol_str->next->d, 0, 0); __builtin_prefetch (&glob_vol_int_arr, 0, 0); __builtin_prefetch (glob_vol_ptr_int, 0, 0); __builtin_prefetch (glob_ptr_vol_int, 0, 0); __builtin_prefetch (glob_vol_ptr_vol_int, 0, 0); __builtin_prefetch (&glob_vol_int_arr[2], 0, 0); __builtin_prefetch (&glob_vol_ptr_int[3], 0, 0); __builtin_prefetch (&glob_ptr_vol_int[3], 0, 0); __builtin_prefetch (&glob_vol_ptr_vol_int[3], 0, 0); __builtin_prefetch (glob_vol_int_arr+3, 0, 0); __builtin_prefetch (glob_vol_int_arr+glob_vol_int, 0, 0); __builtin_prefetch (glob_vol_ptr_int+5, 0, 0); __builtin_prefetch (glob_ptr_vol_int+5, 0, 0); __builtin_prefetch (glob_vol_ptr_vol_int+5, 0, 0); __builtin_prefetch (glob_vol_ptr_int+glob_vol_int, 0, 0); __builtin_prefetch (glob_ptr_vol_int+glob_vol_int, 0, 0); __builtin_prefetch (glob_vol_ptr_vol_int+glob_vol_int, 0, 0); } int main () { simple_vol_global (); simple_vol_file (); str.next = &str; vol_str.next = &str; expr_vol_global (); exit (0); }
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