gcc/testsuite/gcc.dg/ipa/pr96482.c

   1 /* PR ipa/96482 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2 -flto"  } */
   4 /* { dg-require-effective-target lto } */
   5
   6 int
   7 __attribute__((noinline))
   8 foo(int arg)
   9 {
  10   if (arg == 3)
  11     return 1;
  12   if (arg == 4)
  13     return 123;
  14
  15   __builtin_unreachable ();
  16 }
  17
  18 int
  19 __attribute__((noinline))
  20 baz(int x)
  21 {
  22   if (x != 0)
  23     return foo(3); /* called */
  24
  25   return 1;
  26 }
  27
  28 int
  29 __attribute__((noinline))
  30 bar(int x)
  31 {
  32   if (x == 0)
  33     return foo(5); /* not executed */
  34
  35   return 1;
  36 }
  37
  38 int main(int argc, char **argv)
  39 {
  40   if (bar(argc) != baz(argc))
  41     __builtin_abort ();
  42
  43   return 0;
  44 }