2009-07-03 Yong Li <yong.li@torchmobile.com>

2009-07-03  Yong Li  <yong.li@torchmobile.com>

        Reviewed by Maciej Stachowiak (and revised slightly)

        RegExp::match to be optimized
        https://bugs.webkit.org/show_bug.cgi?id=26957

        Allow regexp matching to use Vectors with inline capacity instead of
        allocating a new ovector buffer every time.

        ~5% speedup on SunSpider string-unpack-code test, 0.3% on SunSpider overall.

        * runtime/RegExp.cpp:
        (JSC::RegExp::match):
        * runtime/RegExp.h:
        * runtime/RegExpConstructor.cpp:
        (JSC::RegExpConstructorPrivate::RegExpConstructorPrivate):
        (JSC::RegExpConstructorPrivate::lastOvector):
        (JSC::RegExpConstructorPrivate::tempOvector):
        (JSC::RegExpConstructorPrivate::changeLastOvector):
        (JSC::RegExpConstructor::performMatch):
        (JSC::RegExpMatchesArray::RegExpMatchesArray):
        (JSC::RegExpMatchesArray::fillArrayInstance):
        (JSC::RegExpConstructor::getBackref):
        (JSC::RegExpConstructor::getLastParen):
        (JSC::RegExpConstructor::getLeftContext):
        (JSC::RegExpConstructor::getRightContext):
        * runtime/StringPrototype.cpp:
        (JSC::stringProtoFuncSplit):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@45545 268f45cc-cd09-0410-ab3c-d52691b4dbfc