gcc/testsuite/gcc.target/i386/cmpxchg16b-1.c

   1 /* { dg-do compile { target { ! ia32 } } } */
   2 /* { dg-options "-O2 -mcx16" } */
   3
   4 typedef int TItype __attribute__ ((mode (TI)));
   5
   6 TItype m_128;
   7
   8 void test(TItype x_128)
   9 {
  10   m_128 = __sync_val_compare_and_swap (&m_128, x_128, m_128);
  11 }
  12
  13 /* { dg-final { scan-assembler "cmpxchg16b\[ \\t]" } } */