diff options
Diffstat (limited to 'lib/eu-config.h')
| -rw-r--r-- | lib/eu-config.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/eu-config.h b/lib/eu-config.h index 400cdc6e..88cac670 100644 --- a/lib/eu-config.h +++ b/lib/eu-config.h @@ -163,6 +163,17 @@ asm (".section predict_data, \"aw\"; .previous\n" /* This macro is used by the tests conditionalize for standalone building. */ #define ELFUTILS_HEADER(name) <lib##name.h> +#ifndef HAVE_BUILTIN_POPCOUNT +# define __builtin_popcount hakmem_popcount +static inline unsigned int __attribute__ ((unused)) +hakmem_popcount (unsigned int x) +{ + /* HAKMEM 169 */ + unsigned int n = x - ((x >> 1) & 033333333333) - ((x >> 2) & 011111111111); + return ((n + (n >> 3)) & 030707070707) % 63; +} +#endif /* HAVE_BUILTIN_POPCOUNT */ + #ifdef SYMBOL_VERSIONING # define OLD_VERSION(name, version) \ |