Eliminated a temporary in the SHA256 round.

ChangeLog

 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

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)