gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-68.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-fre1" } */
   3
   4 struct S { char a[3]; char b[5]; } s = { "abc", "defg" };
   5
   6 __SIZE_TYPE__
   7 foo (struct S s, int a, int b)
   8 {
   9   char *p = (char *) &s.a[0];
  10   if (a)
  11     p = (char *) &s.a;
  12   else if (b)
  13     p = (char *) &s;
  14   return __builtin_strlen (p);
  15 }
  16
  17 __SIZE_TYPE__
  18 bar (int a, int b)
  19 {
  20   char *p = (char *) &s.a[0];
  21   if (a)
  22     p = (char *) &s.a;
  23   else if (b)
  24     p = (char *) &s;
  25   return __builtin_strlen (p);
  26 }
  27
  28 /* { dg-final { scan-tree-dump-times "strlen \\\(&s" 2 "fre1" } } */