gcc/testsuite/gcc.target/aarch64/ffs.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2" } */
   3
   4 unsigned int functest(unsigned int x)
   5 {
   6   return __builtin_ffs(x);
   7 }
   8
   9 /* { dg-final { scan-assembler "cmp\tw" } } */
  10 /* { dg-final { scan-assembler "rbit\tw" } } */
  11 /* { dg-final { scan-assembler "clz\tw" } } */
  12 /* { dg-final { scan-assembler "csinc\tw" } } */