gcc/testsuite/c-c++-common/spec-barrier-1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O" } */
   3
   4 /* Test that __builtin_speculation_safe_value returns the correct value.  */
   5 /* This test will cause an unfiltered warning to be emitted on targets
   6    that have not implemented support for speculative execution
   7    barriers.  They should fix that rather than disabling this
   8    test.  */
   9 char a = 1;
  10 short b = 2;
  11 int c = 3;
  12 long d = 4;
  13 long long e = 5;
  14 int *f = (int*) &c;
  15 #ifdef __SIZEOF_INT128__
  16 __int128 g = 9;
  17 #endif
  18
  19 int main ()
  20 {
  21   if (__builtin_speculation_safe_value (a) != 1)
  22     __builtin_abort ();
  23   if (__builtin_speculation_safe_value (b) != 2)
  24     __builtin_abort ();
  25   if (__builtin_speculation_safe_value (c) != 3)
  26     __builtin_abort ();
  27   if (__builtin_speculation_safe_value (d) != 4)
  28     __builtin_abort ();
  29   if (__builtin_speculation_safe_value (e) != 5)
  30     __builtin_abort ();
  31   if (__builtin_speculation_safe_value (f) != &c)
  32     __builtin_abort ();
  33 #ifdef __SIZEOF_INT128__
  34   if (__builtin_speculation_safe_value (g) != 9)
  35     __builtin_abort ();
  36 #endif
  37   return 0;
  38 }