ddidderr/zstd-rs
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minor speed improvements

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inikep
2016-04-07 11:35:17 +02:00
parent e47f33f980
commit 81a345b0ce
2 changed files with 13 additions and 11 deletions
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lib/zstd_opt.h
+3 -4
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@@ -247,8 +247,7 @@ static U32 ZSTD_insertBtAndGetAllMatches (
size_t bestLength = minMatch-1;
if (minMatch == 3) { /* HC3 match finder */
U32 matchIndex3 = ZSTD_insertAndFindFirstIndexHash3 (zc, ip);
U32 const matchIndex3 = ZSTD_insertAndFindFirstIndexHash3 (zc, ip);
if (matchIndex3>windowLow && (current - matchIndex3 < (1<<18))) {
const BYTE* match;
size_t currentMl=0;
@@ -257,8 +256,8 @@ static U32 ZSTD_insertBtAndGetAllMatches (
if (match[bestLength] == ip[bestLength]) currentMl = ZSTD_count(ip, match, iLimit);
} else {
match = dictBase + matchIndex3;
if (MEM_readMINMATCH(match, minMatch) == MEM_readMINMATCH(ip, minMatch)) /* assumption : matchIndex3 <= dictLimit-4 (by table construction) */
currentMl = ZSTD_count_2segments(ip+minMatch, match+minMatch, iLimit, dictEnd, prefixStart) + minMatch;
if (MEM_readMINMATCH(match, MINMATCH) == MEM_readMINMATCH(ip, MINMATCH)) /* assumption : matchIndex3 <= dictLimit-4 (by table construction) */
currentMl = ZSTD_count_2segments(ip+MINMATCH, match+MINMATCH, iLimit, dictEnd, prefixStart) + MINMATCH;
}
/* save best solution */