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Move Prefetch Before Insertion; Speed Up ~6%

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This commit is contained in:
W. Felix Handte 2020-08-13 14:54:10 -04:00
parent eede46a47e
commit a494111385
1 changed files with 3 additions and 3 deletions
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6
lib/compress/zstd_lazy.c
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@ -531,14 +531,14 @@ size_t ZSTD_HcFindBestMatch_generic (
U32 matchIndex;
/* HC4 match finder */
matchIndex = ZSTD_insertAndFindFirstIndex_internal(ms, cParams, ip, mls);
if (dictMode == ZSTD_dedicatedDictSearch) {
const U32* entry = &dms->hashTable[ddsIdx];
PREFETCH_L1(entry);
}
/* HC4 match finder */
matchIndex = ZSTD_insertAndFindFirstIndex_internal(ms, cParams, ip, mls);
for ( ; (matchIndex>lowLimit) & (nbAttempts>0) ; nbAttempts--) {
size_t currentMl=0;
if ((dictMode != ZSTD_extDict) || matchIndex >= dictLimit) {