gcc/testsuite/gcc.target/aarch64/pr78038.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2" } */
   3
   4 /* PR rtl-optimization/78038.
   5    Make sure ree can gracefully handle extensions of the global
   6    variable register after a call.  */
   7
   8 typedef void (*test_fptr_t) (void);
   9 void
  10 test_f (void)
  11 {
  12 }
  13 test_fptr_t test_fptr = test_f;
  14
  15 struct test2_s
  16 {
  17   int f;
  18 };
  19
  20 register struct test2_s *g __asm__("x28");
  21
  22 void
  23 do_something ()
  24 {
  25   test_fptr ();
  26   struct test2_s *p1 = 0;
  27   *p1 = *g;
  28 }