gcc/testsuite/gcc.target/i386/pr30413.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2" } */
   3
   4 extern void abort (void);
   5
   6 int test() {
   7   char a, b = -1;
   8   asm volatile ("mov%z0 %1, %0" : "=q"(a) : "m"(b));
   9   return a;
  10 }
  11
  12 int main()
  13 {
  14   if (test() != -1)
  15     abort();
  16
  17   return 0;
  18 }