gcc/testsuite/gcc.target/powerpc/ppc-switch-1.c

   1 /* { dg-do compile { target { powerpc*-*-* } } } */
   2 /* { dg-skip-if "" { powerpc*-*-darwin* } { "*" } { "" } } */
   3 /* { dg-options "-O2 --param case-values-threshold=2" } */
   4 /* { dg-final { scan-assembler "mtctr" } } */
   5 /* { dg-final { scan-assembler "bctr" } } */
   6
   7 /* Force using a dispatch table even though by default we would generate
   8    ifs.  */
   9
  10 extern long call (long);
  11
  12 long
  13 test_switch (long a, long b)
  14 {
  15   long c;
  16
  17   switch (a)
  18     {
  19     case 0:  c = -b;    break;
  20     case 1:  c = ~b;    break;
  21     case 2:  c = b+1;   break;
  22     default: c = b & 9; break;
  23     }
  24
  25   return call (c) + 1;
  26 }