gcc/testsuite/gcc.target/powerpc/pr51513.c

   1 /* { dg-do compile { target { powerpc*-*-linux* } } } */
   2 /* { dg-options "-O2 -fjump-tables --param case-values-threshold=1" } */
   3 /* Verify we created a jump table.  */
   4 /* { dg-final { scan-assembler-times "mtctr "  1 } } */
   5 /* { dg-final { scan-assembler-times "bctr" 1 } } */
   6 /* Verify we eliminated the range check.  */
   7 /* { dg-final { scan-assembler-not "cmpldi" } } */
   8 /* { dg-final { scan-assembler-not "cmplwi" } } */
   9
  10 long
  11 bug (long cond, long v0, long v1, long v2)
  12 {
  13   switch (cond)
  14     {
  15       case 0:
  16         return v0;
  17       case 1:
  18         return v1;
  19       case 2:
  20         return v2;
  21       default:
  22         __builtin_unreachable ();
  23     }
  24   __builtin_abort ();
  25 }