From: Norbert Pocs <norbertp@openssl.org>
Date: Thu, 3 Jul 2025 13:53:31 +0000 (+0200)
Subject: crypto/bn/bn_gf2m.c: optimize ossl_(un)likely
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d083024b733ab8d406d2630338bd1363259f732b;p=thirdparty%2Fopenssl.git

crypto/bn/bn_gf2m.c: optimize ossl_(un)likely

Signed-off-by: Norbert Pocs <norbertp@openssl.org>

Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/27961)
---

diff --git a/crypto/bn/bn_gf2m.c b/crypto/bn/bn_gf2m.c
index ae7e9d751c2..666c7bef03c 100644
--- a/crypto/bn/bn_gf2m.c
+++ b/crypto/bn/bn_gf2m.c
@@ -344,7 +344,7 @@ int BN_GF2m_mod_arr(BIGNUM *r, const BIGNUM *a, const int p[])
         d0 = p[0] % BN_BITS2;
         d1 = BN_BITS2 - d0;
         z[j - n] ^= (zz >> d0);
-        if (d0)
+        if (ossl_likely(d0))
             z[j - n - 1] ^= (zz << d1);
     }
 
@@ -358,7 +358,7 @@ int BN_GF2m_mod_arr(BIGNUM *r, const BIGNUM *a, const int p[])
         d1 = BN_BITS2 - d0;
 
         /* clear up the top d1 bits */
-        if (d0)
+        if (ossl_likely(d0))
             z[dN] = (z[dN] << d1) >> d1;
         else
             z[dN] = 0;