gcc/testsuite/gcc.c-torture/execute/20061220-1.c

   1 /* PR middle-end/30262 */
   2 /* { dg-skip-if "asm statements do not work as expected" { rl78-*-* } } */
   3 extern void abort (void);
   4
   5 int
   6 foo (void)
   7 {
   8   unsigned int x = 0;
   9
  10   void nested (void)
  11   {
  12     x = 254;
  13   }
  14
  15   nested ();
  16   asm volatile ("" :: "r" (x));
  17   asm volatile ("" :: "m" (x));
  18   asm volatile ("" :: "mr" (x));
  19   asm volatile ("" : "=r" (x) : "0" (x));
  20   asm volatile ("" : "=m" (x) : "m" (x));
  21   return x;
  22 }
  23
  24 int
  25 bar (void)
  26 {
  27   unsigned int x = 0;
  28
  29   void nested (void)
  30   {
  31     asm volatile ("" :: "r" (x));
  32     asm volatile ("" :: "m" (x));
  33     asm volatile ("" :: "mr" (x));
  34     x += 4;
  35     asm volatile ("" : "=r" (x) : "0" (x));
  36     asm volatile ("" : "=m" (x) : "m" (x));
  37   }
  38
  39   nested ();
  40   return x;
  41 }
  42
  43 int
  44 baz (void)
  45 {
  46   unsigned int x = 0;
  47
  48   void nested (void)
  49   {
  50     void nested2 (void)
  51     {
  52       asm volatile ("" :: "r" (x));
  53       asm volatile ("" :: "m" (x));
  54       asm volatile ("" :: "mr" (x));
  55       x += 4;
  56       asm volatile ("" : "=r" (x) : "0" (x));
  57       asm volatile ("" : "=m" (x) : "m" (x));
  58     }
  59     nested2 ();
  60     nested2 ();
  61   }
  62
  63   nested ();
  64   return x;
  65 }
  66
  67 int
  68 main (void)
  69 {
  70   if (foo () != 254 || bar () != 4 || baz () != 8)
  71     abort ();
  72   return 0;
  73 }