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

   1 /* testsuite/gcc.target/arm/pr48183.c */
   2 /* { dg-do compile } */
   3 /* { dg-skip-if "-mslow-flash-data and -mword-relocations incompatible" { *-*-* } { "-mslow-flash-data" } } */
   4 /* { dg-skip-if "-mpure-code and -mword-relocations incompatible" { *-*-* } { "-mpure-code" } } */
   5 /* { dg-options "-O2 -mword-relocations -march=armv7-a -marm" } */
   6 /* { dg-final { scan-assembler-not "\[\\t \]+movw" } } */
   7
   8 int a, d, f;
   9 long b;
  10 struct ww_class {
  11   int stamp;
  12 } c;
  13 struct stress {
  14   int locks;
  15   int nlocks;
  16 };
  17 void *e;
  18 int atomic_add_return_relaxed(int *p1) {
  19   __builtin_prefetch(p1);
  20   return a;
  21 }
  22 void atomic_long_inc_return_relaxed(int *p1) {
  23   int *v = p1;
  24   atomic_add_return_relaxed(v);
  25 }
  26 void ww_acquire_init(struct ww_class *p1) {
  27   atomic_long_inc_return_relaxed(&p1->stamp);
  28 }
  29 void ww_mutex_lock();
  30 int *get_random_order();
  31 void stress_inorder_work() {
  32   struct stress *g = e;
  33   int h = g->nlocks;
  34   int *i = &g->locks, *j = get_random_order();
  35   do {
  36     int n;
  37     ww_acquire_init(&c);
  38   retry:
  39     for (n = 0; n < h; n++)
  40       ww_mutex_lock(i[j[n]]);
  41     f = n;
  42     if (d)
  43       goto retry;
  44   } while (b);
  45 }
  46