libbb/sha1: code shrink in medium-speed version

function                                             old     new   delta
sha1_process_block64                                 654     641     -13

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/libbb/hash_md5_sha.c b/libbb/hash_md5_sha.c
index 959bfc951..7eca3de4d 100644
--- a/libbb/hash_md5_sha.c
+++ b/libbb/hash_md5_sha.c
@@ -1121,7 +1121,7 @@ static void FAST_FUNC sha1_process_block64(sha1_ctx_t *ctx)
  * see what the value will be).
  * """
  */
-#if defined(__i386__)
+#if defined(__GNUC__) && defined(__i386__)
 # define DO_NOT_TRY_PROPAGATING(m) asm("":"+m"(m))
 #else
 # define DO_NOT_TRY_PROPAGATING(m) ((void)0)
@@ -1212,7 +1212,7 @@ static void FAST_FUNC sha1_process_block64(sha1_ctx_t *ctx)
                 c = rotl32(b, 30);
                 b = a;
                 a = work;
-                n = (n + 1) & 15;
+                n = (n + 1) /* & 15*/;
         } while (n != 4);
         /* 2nd round of 20 operations */
         j = 19;