gcc/testsuite/gcc.dg/fold-reassoc-3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fdump-tree-original" } */
   3
   4 int i;
   5 int *p = &i;
   6 static __PTRDIFF_TYPE__ d = p - (p + 1);
   7
   8 void
   9 foo (void)
  10 {
  11   int *q = &i;
  12   static __PTRDIFF_TYPE__ e = q - (q + 1);
  13 }
  14
  15 /* { dg-final { scan-tree-dump-not " - " "original" } } */
  16 /* { dg-final { scan-tree-dump-not " \\+ " "original" } } */