gcc/testsuite/gcc.target/arm/pr81863.c

   1 /* testsuite/gcc.target/arm/pr48183.c */
   2 /* { dg-do compile } */
   3 /* { dg-require-effective-target arm_arch_v7a_arm_ok } */
   4 /* { dg-skip-if "-mslow-flash-data and -mword-relocations incompatible" { *-*-* } { "-mslow-flash-data" } } */
   5 /* { dg-skip-if "-mpure-code and -mword-relocations incompatible" { *-*-* } { "-mpure-code" } } */
   6 /* { dg-options "-O2 -mword-relocations" } */
   7 /* { dg-add-options arm_arch_v7a_arm } */
   8 /* { dg-final { scan-assembler-not "\[\\t \]+movw" } } */
   9
  10 int a, d, f;
  11 long b;
  12 struct ww_class {
  13   int stamp;
  14 } c;
  15 struct stress {
  16   int locks;
  17   int nlocks;
  18 };
  19 void *e;
  20 int atomic_add_return_relaxed(int *p1) {
  21   __builtin_prefetch(p1);
  22   return a;
  23 }
  24 void atomic_long_inc_return_relaxed(int *p1) {
  25   int *v = p1;
  26   atomic_add_return_relaxed(v);
  27 }
  28 void ww_acquire_init(struct ww_class *p1) {
  29   atomic_long_inc_return_relaxed(&p1->stamp);
  30 }
  31 void ww_mutex_lock();
  32 int *get_random_order();
  33 void stress_inorder_work() {
  34   struct stress *g = e;
  35   int h = g->nlocks;
  36   int *i = &g->locks, *j = get_random_order();
  37   do {
  38     int n;
  39     ww_acquire_init(&c);
  40   retry:
  41     for (n = 0; n < h; n++)
  42       ww_mutex_lock(i[j[n]]);
  43     f = n;
  44     if (d)
  45       goto retry;
  46   } while (b);
  47 }
  48