gcc/testsuite/gcc.target/i386/pr55154.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target lp64 } */
   3 /* { dg-require-effective-target fpic } */
   4 /* { dg-options "-O2 -mcx16 -fpic -mcmodel=large -fno-split-wide-types" } */
   5
   6 __int128 i;
   7
   8 void test ()
   9 {
  10   __sync_val_compare_and_swap (&i, i, i);
  11 }