gcc/testsuite/gcc.dg/tree-ssa/forwprop-29.c

   1 /* { dg-options "-O2 -fno-ipa-icf" } */
   2
   3 void runtime_error (void) __attribute__ ((noreturn));
   4 void compiletime_error (void) __attribute__ ((noreturn, error ("")));
   5
   6 static void
   7 compiletime_check_equals_1 (int *x, int y)
   8 {
   9   int __p = *x != y;
  10   if (__builtin_constant_p (__p) && __p)
  11     compiletime_error ();
  12   if (__p)
  13     runtime_error ();
  14 }
  15
  16 static void
  17 compiletime_check_equals_2 (int *x, int y)
  18 {
  19   int __p = *x != y;
  20   if (__builtin_constant_p (__p) && __p)
  21     compiletime_error (); /* { dg-error "call to" } */
  22   if (__p)
  23     runtime_error ();
  24 }
  25
  26 void
  27 foo (int *x)
  28 {
  29   compiletime_check_equals_1 (x, 5);
  30   compiletime_check_equals_2 (x, 10);
  31 }