gcc/testsuite/gcc.target/i386/pr71245-1.c

   1 /* PR target/71245 */
   2 /* { dg-do compile { target ia32 } } */
   3 /* { dg-options "-O2 -march=pentium -mno-sse -mfpmath=387" } */
   4
   5 typedef union
   6 {
   7   unsigned long long ll;
   8   double d;
   9 } u_t;
  10
  11 u_t d = { .d = 5.0 };
  12
  13 void foo_d (void)
  14 {
  15   u_t tmp;
  16
  17   tmp.ll = __atomic_load_n (&d.ll, __ATOMIC_SEQ_CST);
  18   tmp.d += 1.0;
  19   __atomic_store_n (&d.ll, tmp.ll, __ATOMIC_SEQ_CST);
  20 }
  21
  22 /* { dg-final { scan-assembler-not "(fistp|fild)" } } */