Yann Collet
aa99163752
fixed minor static analyzer warning
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dead assignment
2017-11-03 12:33:55 -07:00
Yann Collet
89821ac7a1
minor comment edit
2017-11-03 11:49:56 -07:00
Yann Collet
1025546347
unified HC levels
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LZ4_setCompressionLevel() can be users accross the whole range of HC levels
No more transition issue between Optimal and HC modes
2017-11-03 11:28:28 -07:00
Yann Collet
a1f4a0d983
moved ctx->end handling from parsers
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responsibility better handled one layer above (LZ4HC_compress_generic())
2017-11-03 10:48:55 -07:00
Yann Collet
c9bbad53ff
removed ctx->searchNum
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nbSearches now transmitted directly as function parameter
easier to track and debug
2017-11-03 10:30:52 -07:00
Yann Collet
e2eca62046
LZ4_compress_HC_continue_destSize() now compatible with optimal parser
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levels 11+
2017-11-03 02:03:19 -07:00
Yann Collet
3b222d2d96
removes matches[] table
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saves stack space
clearer match finder interface (no more table to fill)
2017-11-03 01:37:43 -07:00
Yann Collet
320e1d51ac
removed useless parameter from hash chain matchfinder
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used to be present for compatibility with binary tree matchfinder
2017-11-03 01:20:30 -07:00
Yann Collet
81667a1e96
removed code and reference to binary tree match finder
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reduced size of LZ4HC state
2017-11-03 01:18:12 -07:00
Yann Collet
82c1aed419
improved level 11 speed
2017-11-03 00:59:05 -07:00
Yann Collet
890c0553d0
optimized skip strategy for level 12
2017-11-03 00:15:52 -07:00
Yann Collet
05d78eb817
new level 11 uses 512 attempts
2017-11-02 19:50:08 -07:00
Yann Collet
a1c5343d89
more generic skip formula
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improving speed
2017-11-02 18:54:18 -07:00
Yann Collet
e06cb03c11
small adaptations for intermediate level 11
2017-11-02 16:25:10 -07:00
Yann Collet
4b81885800
partial search, while preserving compression ratio
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tag interesting places
2017-11-02 15:37:18 -07:00
Yann Collet
bd992f12e4
searching match leading strictly farther does not work
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sometimes, it's better to re-use same match but start it later,
in order to get shorter matchlength code
2017-11-02 15:05:45 -07:00
Yann Collet
8e16eb0cd1
fixed last lost bytes in maximal mode
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even gained 2 bytes on calgary.tar...
added conditional traces `g_debuglog_enable`
2017-11-02 14:53:06 -07:00
Yann Collet
0ff4df1b94
changed strategy : opt[] path is complete after each match
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previous strategy would leave a few "bad choices"
on the ground they would be fixed later,
but that requires passing through each position to make the fix
and cannot give the end position of the last useful match.
2017-11-02 13:44:57 -07:00
Yann Collet
15b0d229c1
Merge branch 'dev' into btopt
2017-10-31 17:55:01 -07:00
Yann Collet
07c91d9dba
Merge pull request #408 from terrelln/time
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[bench] Use higher resolution timer on POSIX
2017-10-31 13:49:29 -07:00
Yann Collet
931c5c20d0
fixed minor overflow mistake in optimal parser
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saving 20 bytes on calgary.tar
2017-10-30 17:47:54 -07:00
Yann Collet
ab4bd93f59
fixed minor initialization warning
2017-10-30 16:10:25 -07:00
Yann Collet
8470d5082d
Merge pull request #412 from mikir/symbolsVisibility
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Separated visibility from LZ4LIB_API macro.
2017-10-30 15:57:43 -07:00
mikir
63a7f34fee
Separated visibility from LZ4LIB_API macro.
2017-10-30 13:44:24 +01:00
Yann Collet
16a4337473
added hash chain with conditional length
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not a success yet
2017-10-25 07:07:08 +02:00
Yann Collet
a12cdf00c3
lz4opt: added hash chain search
2017-10-20 17:04:29 -07:00
Yann Collet
fd6bd5107b
switched many types to int
2017-10-20 15:33:52 -07:00
Yann Collet
d813134619
removed SET_PRICE macro
2017-10-20 13:44:49 -07:00
Yann Collet
fa064c8a8c
removed one macro usage
2017-10-20 13:32:45 -07:00
Yann Collet
ee62faee08
minor refactor
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reduce variable scope
remove one macro usage
2017-10-20 12:05:00 -07:00
Yann Collet
fc879fe170
lz4opt: refactor sequence reverse traversal
2017-10-20 11:32:15 -07:00
Yann Collet
c058753393
refactor variable matchnum
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separate initial and iterative search
renamed nb_matches
2017-10-20 11:24:56 -07:00
Yann Collet
7bb0a617ee
simplified initial cost conditions
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llen integrated in opt[]
2017-10-20 11:00:10 -07:00
Yann Collet
6cec68de39
added assert
2017-10-19 16:47:25 -07:00
Yann Collet
ac2ad52257
renamed last_pos into last_match_pos
2017-10-19 16:43:36 -07:00
Yann Collet
708e2cbb60
simplified early exit when single solution
2017-10-19 16:39:40 -07:00
Nick Terrell
74d8688bc8
[bench] Use higher resolution timer on POSIX
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The timer used was only accurate up to 0.01 seconds. This timer is accurate up to 1 ns.
It is a monotonic timer that measures the real time difference, not on CPU time.
Copied the benchmark code from 6ab4d5e904
2017-10-17 13:55:35 -07:00
Yann Collet
dccf8826f1
lz4cli : minor rewrite of lz4c legacy commands
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for clarity
2017-10-14 23:50:07 -07:00
Yann Collet
1aa997b594
Merge branch 'dev' of github.com:Cyan4973/lz4 into dev
2017-10-14 18:49:06 -07:00
Yann Collet
2d827e1b28
lz4cli : removed extension artefacts
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It used to be useful for an old Windows variant which is no longer maintained.
2017-10-14 18:48:00 -07:00
Yann Collet
f92722eea0
Merge pull request #407 from odaira/useO2ppc64le
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Use O2 for the decompression functions on ppc64le with gcc
2017-10-13 16:21:46 -07:00
Rei Odaira
73bcf90e51
Use the optimization level of O2 for the decompression functions on ppc64le with gcc, to avoid harmful unrolling and SIMDization with O3
2017-10-13 14:53:37 -05:00
Yann Collet
34da12c6e6
Merge pull request #403 from felixhandte/lz4-cli-dict-support-tests
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Support Dictionaries on the Command Line
2017-10-10 16:18:16 -07:00
W. Felix Handte
9a16272261
Read the Dictionary into a Circular Buffer
2017-10-09 20:18:21 -04:00
W. Felix Handte
93f8284c17
Add some tests verifying command line dictionary functionality
2017-10-09 20:18:03 -04:00
W. Felix Handte
2bd85f4199
Add Dictionary Support to the Command Line Tool
2017-10-09 20:16:00 -04:00
Yann Collet
a4314829db
fused getLongerMatch and getWiderMatch
2017-10-09 01:50:28 -07:00
Yann Collet
97c18f5f0e
re-inserted last byte test in widerMatch
2017-10-09 01:44:05 -07:00
Yann Collet
bdca63ed69
early out is not better
2017-10-09 00:36:47 -07:00
Yann Collet
1ee17e4eb8
optional fuse
2017-10-09 00:31:12 -07:00
