gcc/testsuite/gcc.dg/tree-ssa/pr84436-5.c

   1 /* PR tree-optimization/84436 */
   2 /* { dg-options "-O2 -fdump-tree-switchconv -fdump-tree-optimized" } */
   3 /* { dg-do run } */
   4
   5 signed char
   6 __attribute__ ((noipa))
   7 foo (signed char how)
   8 {
   9   switch (how) {
  10     case -4: how = 96; break;
  11     case -3: how = -120; break;
  12     case -2: how = -80; break;
  13     case -1: how = -40; break;
  14     case 0: how = 0; break;
  15     case 1: how = 40; break;
  16   }
  17   return how;
  18 }
  19
  20 int main()
  21 {
  22   if (foo (-4) != 96)
  23   __builtin_abort ();
  24
  25   if (foo (-3) != -120)
  26   __builtin_abort ();
  27
  28   if (foo (0) != 0)
  29   __builtin_abort ();
  30
  31   if (foo (123) != 123)
  32   __builtin_abort ();
  33
  34   return 0;
  35 }
  36
  37 /* { dg-final { scan-tree-dump-times "40 *\\*" 1 "switchconv" } } */
  38 /* { dg-final { scan-tree-dump-not "switch" "optimized" } } */