diff options
| -rw-r--r-- | cache.h | 10 |
1 files changed, 10 insertions, 0 deletions
@@ -1023,6 +1023,16 @@ extern const struct object_id null_oid; static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2) { + /* + * This is a temporary optimization hack. By asserting the size here, + * we let the compiler know that it's always going to be 20, which lets + * it turn this fixed-size memcmp into a few inline instructions. + * + * This will need to be extended or ripped out when we learn about + * hashes of different sizes. + */ + if (the_hash_algo->rawsz != 20) + BUG("hash size not yet supported by hashcmp"); return memcmp(sha1, sha2, the_hash_algo->rawsz); } |