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sha3: tweak choice of a fast code path for 64-bit

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2013-01-15 21:50:41 +01:00
parent 5b7f50f372
commit 8e7312e12f
1 changed files with 2 additions and 1 deletions
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3
libbb/hash_md5_sha.c
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@ -1057,7 +1057,7 @@ static void KeccakF(uint64_t *state)
/* Chi */
for (y = 0; y <= 20; y += 5) {
if (SHA3_SMALL) {
if (SHA3_SMALL && !ARCH_IS_64BIT) {
uint64_t BC[5];
BC[0] = state[y + 0];
BC[1] = state[y + 1];
@ -1071,6 +1071,7 @@ static void KeccakF(uint64_t *state)
}
} else {
/* 32-bit x86: +50 bytes code, 10% faster */
/* 64-bit x86: ~same code size, 30% faster */
uint64_t BC0, BC1, BC2, BC3, BC4;
BC0 = state[y + 0];
BC1 = state[y + 1];