From cbf04e364a8c61e4bae650c3584f0d5157c380ba Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niels=20M=C3=B6ller?= <nisse@lysator.liu.se>
Date: Mon, 11 Mar 2013 11:08:34 +0100
Subject: [PATCH] Eliminated a temporary in the SHA256 round.
---
ChangeLog | 2 ++
sha256-compress.c | 10 +++++-----
2 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index e98ba45c..26d7780c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
2013-03-11 Niels Möller <nisse@lysator.liu.se>
+ * sha256-compress.c (ROUND): Eliminated a temporary.
+
* armv7/sha1-compress.asm: New file, 9% speedup.
* testsuite/testutils.c (test_hash): Test different alignments for
diff --git a/sha256-compress.c b/sha256-compress.c
index 3f441e81..96a88946 100644
--- a/sha256-compress.c
+++ b/sha256-compress.c
@@ -89,11 +89,11 @@
/* It's crucial that DATA is only used once, as that argument will
* have side effects. */
-#define ROUND(a,b,c,d,e,f,g,h,k,data) do { \
- uint32_t T = h + S1(e) + Choice(e,f,g) + k + data; \
- d += T; \
- h = T + S0(a) + Majority(a,b,c); \
-} while (0)
+#define ROUND(a,b,c,d,e,f,g,h,k,data) do { \
+ h += S1(e) + Choice(e,f,g) + k + data; \
+ d += h; \
+ h += S0(a) + Majority(a,b,c); \
+ } while (0)
void
_nettle_sha256_compress(uint32_t *state, const uint8_t *input, const uint32_t *k)
--
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