gcc/testsuite/gcc.dg/tree-ssa/if-to-switch-4.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-iftoswitch-optimized --param case-values-threshold=5" } */
   3
   4 int global;
   5 int foo ();
   6
   7 int main(int argc, char **argv)
   8 {
   9   if (argc == 1)
  10     foo ();
  11   else if (argc == 2)
  12     {
  13       global += 1;
  14     }
  15   else if (argc == 3)
  16     {
  17       foo ();
  18       foo ();
  19     }
  20   else if (argc == 4)
  21     {
  22       foo ();
  23     }
  24   /* This will be removed with EVRP.  */
  25   else if (argc == 1)
  26     {
  27       global = 2;
  28     }
  29   else
  30     global -= 123;
  31
  32   global -= 12;
  33   return 0;
  34 }
  35
  36 /* { dg-final { scan-tree-dump-not "Condition chain" "iftoswitch" } } */