gcc/testsuite/gcc.dg/tree-ssa/pr22051-2.c

   1 /* { dg-do compile }  */
   2 /* { dg-options "-fpermissive -O2 -fdump-tree-optimized -w" }  */
   3
   4 void *arf ();
   5 int
   6 foo(void (*q)(void))
   7 {
   8   int r = q;
   9
  10   if (r != 0)
  11     return 1;
  12   else
  13     return 2;
  14 }
  15
  16 /* The cast to an int type must remain after all optimizations are complete
  17    so that we do not try to canonicalize a function pointer for the
  18    comparison when no such canonicalization is wanted.  */
  19 /* { dg-final { scan-tree-dump-times "r_. = \\(int\\) q" 1 "optimized" } } */
  20