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bug#16912: [PATCH] no longer use CSET for non-UTF8 locale in DFA engine
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From: |
Norihiro Tanaka |
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Subject: |
bug#16912: [PATCH] no longer use CSET for non-UTF8 locale in DFA engine |
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Date: |
Sat, 01 Mar 2014 18:48:22 +0900 |
Package: grep
Tags: patch
I have overlooked the important thing about optimization by
trivial_case_ignore. After optimization by trivial_case_ignore,
kwset engine can be used yet. However, if remove trivial_case_ignore,
it's never used longer because kwsmusts does nothing when MB_CUR_MAX > 1
&& match_icase.
The patch reverts removal of trivial_case_ignore and fixes 200x slower
for non-UTF8 locales with another approach. It always prefers CSET to
replacement to OR and no longer use CSET for non-UTF8 locales in DFA
engine.
It can also optimize by trivial_case_ignore and enables to speed-up >20x
for non-UTF8 locales. (I tested it with euc-jp)
Norihiro
patch.txt
Description: Binary data
tests.txt
Description: Binary data
- bug#16912: [PATCH] no longer use CSET for non-UTF8 locale in DFA engine,
Norihiro Tanaka <=
- bug#16912: [PATCH] no longer use CSET for non-UTF8 locale in DFA engine, Paul Eggert, 2014/03/01
- bug#16912: [PATCH] no longer use CSET for non-UTF8 locale in DFA engine, Norihiro Tanaka, 2014/03/01
- bug#16912: [PATCH] no longer use CSET for non-UTF8 locale in DFA engine, Paul Eggert, 2014/03/03
- bug#16912: [PATCH] no longer use CSET for non-UTF8 locale in DFA engine, Paolo Bonzini, 2014/03/04
- bug#16912: [PATCH] no longer use CSET for non-UTF8 locale in DFA engine, Norihiro Tanaka, 2014/03/04
- bug#16912: [PATCH] no longer use CSET for non-UTF8 locale in DFA engine, Paolo Bonzini, 2014/03/05
- bug#16912: [PATCH] no longer use CSET for non-UTF8 locale in DFA engine, Norihiro Tanaka, 2014/03/05
- bug#16912: [PATCH] no longer use CSET for non-UTF8 locale in DFA engine, Paolo Bonzini, 2014/03/05