From 5c0c5582319a5123635c9fd62f8e99ef01cceb3f Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Sun, 2 Jan 2022 01:56:35 +0100
Subject: [PATCH] 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>
---
 libbb/hash_md5_sha.c | 4 ++--
 1 file 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;