We don't need j nor t2. Simplify the code a bit by reusing t and
incrementing the 'out' pointer (it is a bit easier on the compiler
as it reduce register pressure).
Signed-off-by: Nicolas Pitre <[email protected]>
Index: linux-2.6/crypto/sha1.c
===================================================================
--- linux-2.6.orig/crypto/sha1.c
+++ linux-2.6/crypto/sha1.c
@@ -76,7 +76,7 @@
{
struct sha1_ctx *sctx = ctx;
u64 count = sctx->count;
- u32 i, j, index, padlen, t;
+ u32 i, index, padlen, t;
u8 bits[8];
static const u8 padding[64] = { 0x80, };
@@ -99,12 +99,13 @@
sha1_update(sctx, bits, sizeof bits);
/* Store state in digest */
- for (i = j = 0; i < 5; i++, j += 4) {
- u32 t2 = sctx->state[i];
- out[j+3] = t2 & 0xff; t2>>=8;
- out[j+2] = t2 & 0xff; t2>>=8;
- out[j+1] = t2 & 0xff; t2>>=8;
- out[j ] = t2 & 0xff;
+ for (i = 0; i < 5; i++) {
+ t = sctx->state[i];
+ out[3] = t & 0xff; t>>=8;
+ out[2] = t & 0xff; t>>=8;
+ out[1] = t & 0xff; t>>=8;
+ out[0] = t & 0xff;
+ out += 4;
}
/* Wipe context */
-
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