gcc/testsuite/gcc.dg/tree-ssa/pr58480.c

   1 /* { dg-do compile { target { ! keeps_null_pointer_checks } } } */
   2 /* { dg-options "-O2 -fdisable-tree-evrp -fdump-tree-vrp1 -fdelete-null-pointer-checks" } */
   3
   4 extern void eliminate (void);
   5 extern void* f1 (void *a, void *b) __attribute__((nonnull));
   6 extern void* f2 (void *a, void *b) __attribute__((nonnull(2)));
   7 void g1 (void*p, void*q){
   8   f1 (q, p);
   9   if (p == 0)
  10     eliminate ();
  11 }
  12 void g2 (void*p, void*q){
  13   f2 (q, p);
  14   if (p == 0)
  15     eliminate ();
  16 }
  17
  18 /* { dg-final { scan-tree-dump-times "Folding predicate\[^\\n\]*to 0" 2 "vrp1" } } */