ddidderr/zstd-rs
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added support for MINMATCH=3 on big endian architecture

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changed ZSTD_HASHLOG3_MIN to 2 (4 bytes for MINMACH > 3)
This commit is contained in:
inikep
2016-03-07 10:07:08 +01:00
parent 89c9e1a847
commit e2446b0e36
4 changed files with 22 additions and 21 deletions
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lib/zstd_opt.h
+6 -8
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@@ -335,10 +335,9 @@ static U32 ZSTD_BtGetAllMatches (
static U32 ZSTD_BtGetAllMatches_selectMLS (
ZSTD_CCtx* zc, /* Index table will be updated */
const BYTE* ip, const BYTE* const iLowLimit, const BYTE* const iHighLimit,
const BYTE* ip, const BYTE* const iHighLimit,
const U32 maxNbAttempts, const U32 matchLengthSearch, ZSTD_match_t* matches)
{
(void)iLowLimit; /* unused */
switch(matchLengthSearch)
{
default :
@@ -363,10 +362,9 @@ static U32 ZSTD_BtGetAllMatches_extDict (
static U32 ZSTD_BtGetAllMatches_selectMLS_extDict (
ZSTD_CCtx* zc, /* Index table will be updated */
const BYTE* ip, const BYTE* const iLowLimit, const BYTE* const iHighLimit,
const BYTE* ip, const BYTE* const iHighLimit,
const U32 maxNbAttempts, const U32 matchLengthSearch, ZSTD_match_t* matches)
{
(void)iLowLimit;
switch(matchLengthSearch)
{
default :
@@ -447,7 +445,7 @@ void ZSTD_compressBlock_opt_generic(ZSTD_CCtx* ctx,
} while (mlen >= minMatch);
}
match_num = ZSTD_BtGetAllMatches_selectMLS(ctx, ip, ip, iend, maxSearches, mls, matches); /* first search (depth 0) */
match_num = ZSTD_BtGetAllMatches_selectMLS(ctx, ip, iend, maxSearches, mls, matches); /* first search (depth 0) */
ZSTD_LOG_PARSER("%d: match_num=%d last_pos=%d\n", (int)(ip-base), match_num, last_pos);
if (!last_pos && !match_num) { ip++; continue; }
@@ -567,7 +565,7 @@ void ZSTD_compressBlock_opt_generic(ZSTD_CCtx* ctx,
} while (mlen >= minMatch);
}
match_num = ZSTD_BtGetAllMatches_selectMLS(ctx, inr, ip, iend, maxSearches, mls, matches);
match_num = ZSTD_BtGetAllMatches_selectMLS(ctx, inr, iend, maxSearches, mls, matches);
ZSTD_LOG_PARSER("%d: ZSTD_GetAllMatches match_num=%d\n", (int)(inr-base), match_num);
if (match_num > 0 && matches[match_num-1].len > sufficient_len) {
@@ -779,7 +777,7 @@ void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx* ctx,
best_mlen = (last_pos) ? last_pos : minMatch;
match_num = ZSTD_BtGetAllMatches_selectMLS_extDict(ctx, ip, ip, iend, maxSearches, mls, matches); /* first search (depth 0) */
match_num = ZSTD_BtGetAllMatches_selectMLS_extDict(ctx, ip, iend, maxSearches, mls, matches); /* first search (depth 0) */
ZSTD_LOG_PARSER("%d: match_num=%d last_pos=%d\n", (int)(ip-base), match_num, last_pos);
if (!last_pos && !match_num) { ip++; continue; }
@@ -909,7 +907,7 @@ void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx* ctx,
best_mlen = (best_mlen > minMatch) ? best_mlen : minMatch;
match_num = ZSTD_BtGetAllMatches_selectMLS_extDict(ctx, inr, ip, iend, maxSearches, mls, matches);
match_num = ZSTD_BtGetAllMatches_selectMLS_extDict(ctx, inr, iend, maxSearches, mls, matches);
ZSTD_LOG_PARSER("%d: ZSTD_GetAllMatches match_num=%d\n", (int)(inr-base), match_num);
if (match_num > 0 && matches[match_num-1].len > sufficient_len) {