gcc/testsuite/gcc.target/i386/pr70593.c

   1 /* PR middle-end/70593 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2" } */
   4
   5 __attribute__((noinline, noclone)) unsigned long
   6 foo (unsigned x)
   7 {
   8   unsigned long a, c = x;
   9   asm volatile ("xorl\t%k1, %k1\n\tmovl\t$7, %k0" : "=c" (c), "=a" (a) : "0" (c), "1" (c) : "memory");
  10   return c;
  11 }
  12
  13 int
  14 main ()
  15 {
  16   if (foo (3) != 7)
  17     __builtin_abort ();
  18   return 0;
  19 }