gcc/testsuite/gcc.dg/tls/opt-14.c

   1 /* This testcase generated invalid assembly on ARM Thumb-2.  Two
   2    PIC additions of pc were combined, but the deleted label was still
   3    used.  */
   4 /* { dg-do assemble } */
   5 /* { dg-options "-O2" } */
   6 /* { dg-require-effective-target tls } */
   7
   8 struct __res_state
   9 {
  10   int options;
  11 };
  12 extern __thread struct __res_state *__resp
  13   __attribute__ ((tls_model ("initial-exec")));
  14
  15 void foo (void);
  16
  17 int main(void)
  18 {
  19   int count, total = 0;
  20
  21   for (count = 0; count < 10; count++)
  22     {
  23       if (((*__resp).options & 0x00000001) == 0)
  24         foo ();
  25       (*__resp).options &= ~((0x00000002 | 0x00000200 | 0x00000080));
  26     }
  27   return 0;
  28 }