gcc/testsuite/gcc.dg/ipa/vrp6.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-ipa-cp-details -fdump-tree-vrp1" } */
   3
   4 static __attribute__((noinline, noclone))
   5 int foo (int *p)
   6 {
   7   if (!p)
   8     return 0;
   9   *p = 1;
  10 }
  11
  12 struct st
  13 {
  14   int a;
  15   int b;
  16 };
  17
  18 struct st s2;
  19 int a;
  20 int bar (struct st *s)
  21 {
  22   struct st s3;
  23   int b;
  24   if (!s)
  25     return 0;
  26   foo (&s->a);
  27   foo (&s2.a);
  28   foo (&s3.a);
  29   foo (&a);
  30   foo (&b);
  31 }
  32
  33 /* { dg-final { scan-ipa-dump "Setting value range.* \\\[1, \\+INF\\\]" "cp" } } */
  34 /* { dg-final { scan-tree-dump-times "if" 1 "vrp1" } } */