gcc/testsuite/gcc.target/i386/pr66838.c

   1 /* { dg-do run { target lp64 } } */
   2 /* { dg-options "-O2" } */
   3
   4 void abort (void);
   5
   6 char global;
   7
   8 __attribute__((sysv_abi, noinline, noclone))
   9 void sysv_abi_func(char const *desc, void *local)
  10 {
  11   register int esi asm ("esi");
  12   register int edi asm ("edi");
  13
  14   if (local != &global)
  15     abort ();
  16
  17   /* Clobber some of the extra SYSV ABI registers.  */
  18   asm volatile ("movl\t%2, %0\n\tmovl\t%2, %1"
  19                 : "=r" (esi), "=r" (edi)
  20                 : "i" (0xdeadbeef));
  21 }
  22
  23 __attribute__((ms_abi, noinline, noclone))
  24 void ms_abi_func ()
  25 {
  26   sysv_abi_func ("1st call", &global);
  27   sysv_abi_func ("2nd call", &global);
  28   sysv_abi_func ("3rd call", &global);
  29 }
  30
  31 int
  32 main(void)
  33 {
  34   ms_abi_func();
  35   return 0;
  36 }