diff options
| -rw-r--r-- | cpukit/score/include/rtems/score/prioritybitmapimpl.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/cpukit/score/include/rtems/score/prioritybitmapimpl.h b/cpukit/score/include/rtems/score/prioritybitmapimpl.h index 2041a2072d..0082720392 100644 --- a/cpukit/score/include/rtems/score/prioritybitmapimpl.h +++ b/cpukit/score/include/rtems/score/prioritybitmapimpl.h @@ -60,6 +60,8 @@ RTEMS_INLINE_ROUTINE unsigned int _Bitfield_Find_first_bit( #if ( CPU_USE_GENERIC_BITFIELD_CODE == FALSE ) _CPU_Bitfield_Find_first_bit( value, bit_number ); +#elif defined(__GNUC__) + bit_number = __builtin_clz( value ) - __SIZEOF_INT__ * __CHAR_BIT__ + 16; #else if ( value < 0x100 ) { bit_number = _Bitfield_Leading_zeros[ value ] + 8; |