gcc/testsuite/gcc.target/powerpc/ppc-switch-2.c

/* { dg-do compile { target { powerpc*-*-* } } } */
/* { dg-skip-if "" { powerpc*-*-darwin* } } */
/* { dg-options "-O2 --param case-values-threshold=20" } */
/* { dg-final { scan-assembler-not "mtctr" } } */
/* { dg-final { scan-assembler-not "bctr" } } */

/* Force using if tests, instead of a dispatch table.  */

extern long call (long);

long
test_switch (long a, long b)
{
  long c;

  switch (a)
    {
    case 0:  c = -b;	break;
    case 1:  c = ~b;	break;
    case 2:  c = b+1;	break;
    case 3:  c = b-2;	break;
    case 4:  c = b*3;	break;
    case 5:  c = b/4;	break;
    case 6:  c = b<<5;	break;
    case 7:  c = b>>6;	break;
    case 8:  c = b|7;	break;
    case 9:  c = b^8;	break;
    default: c = b&9;	break;
    }

  return call (c) + 1;
}