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libbb/yescrypt: code shrink

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function                                             old     new   delta
blockmix_xor                                        1177     702    -475

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2025-07-15 05:47:18 +02:00
parent e62bfbcaed
commit abe0b45cd7
1 changed files with 8 additions and 15 deletions
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23
libbb/yescrypt/alg-yescrypt-kdf.c
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@ -421,26 +421,19 @@ static uint32_t blockmix_xor(const salsa20_blk_t *Bin1,
i = 0;
r--;
do {
for (;;) {
XOR_X(Bin1[i]);
XOR_X(Bin2[i]);
PWXFORM;
WRITE_X(Bout[i]);
XOR_X(Bin1[i + 1]);
XOR_X(Bin2[i + 1]);
PWXFORM;
if (unlikely(i >= r))
if (unlikely(i > r))
break;
WRITE_X(Bout[i]);
i++;
}
WRITE_X(Bout[i + 1]);
i += 2;
} while (1);
i++;
ctx->S0 = S0; ctx->S1 = S1; ctx->S2 = S2;
ctx->S0 = S0;
ctx->S1 = S1;
ctx->S2 = S2;
ctx->w = w;
SALSA20_2(Bout[i]);