gcc/testsuite/gcc.dg/tree-ssa/cswtch-5.c

   1 /* PR tree-optimization/79472 */
   2 /* { dg-options "-O2 -fdump-tree-switchconv" } */
   3 /* { dg-do compile { target nonpic } } */
   4
   5 void
   6 foo (unsigned int v)
   7 {
   8   const char *s;
   9
  10   switch (v)
  11     {
  12     case 0:
  13       s = "foo";
  14       break;
  15     case 1:
  16       s = "bar";
  17       break;
  18     case 2:
  19       s = "spam";
  20       break;
  21     default:
  22       for (int i = 0; i < v; i++)
  23         __builtin_printf ("baz\n");
  24       return;
  25     }
  26
  27   __builtin_printf ("%s\n", s);
  28 }
  29
  30 int
  31 bar (unsigned int v, int w)
  32 {
  33   const char *s;
  34
  35   switch (v)
  36     {
  37     case 0:
  38       s = "foo";
  39       break;
  40     case 1:
  41       s = "bar";
  42       break;
  43     case 2:
  44       s = "spam";
  45       break;
  46     default:
  47       __builtin_printf ("baz\n");
  48       if (v > 25)
  49         __builtin_printf ("bl1\n");
  50       else
  51         __builtin_printf ("bl2\n");
  52       goto lab;
  53     }
  54
  55   __builtin_printf ("%s\n", s);
  56   if (w > 25)
  57     __builtin_printf ("cl1\n");
  58   else
  59     __builtin_printf ("cl2\n");
  60  lab:
  61   __builtin_printf ("dl\n");
  62   return v + w;
  63 }
  64
  65 /* { dg-final { scan-tree-dump-times "Switch converted" 2 "switchconv" } } */
  66 /* { dg-final { scan-tree-dump-times "= CSWTCH" 2 "switchconv" } } */