2004-05-03 Paolo Carlini <pcarlini@suse.de>

	Optimize locale::_M_impl->_M_names for the most common cases:
	!_M_names[0] means unnamed; !_M_names[1] means all the categories
	the same name (_M_names[0] && _M_names[1] means that the full set
	of _M_names must be processed, the general case).
	* include/bits/locale_classes.h (locale::_Impl::_M_check_same_name):
	Tweak, saving work when !_M_names[1].
	(locale::locale(const locale&, _Facet*): Simplify: now just setting
	_M_names[0] = 0 means unnamed.
	* src/locale.cc (locale::operator==): Deal first with the common,
	easy cases, otherwise fall back to locale::name().
	(locale::name()): Tweak, if !_M_names[0] just return "*".
	(locale::_Impl::_Impl(const _Impl&, size_t): Tweak, early stop
	copying __imp._M_names if !__imp._M_names[0] or !__imp._M_names[1].
	* src/locale_init.cc (locale::_Impl::_Impl(size_t)): Tweak.
	* src/localename.cc (locale::_Impl::_Impl(const char*, size_t):
	Simplify when !std::strchr, just updating _M_names[0]; clean up.
	(locale::_Impl::_M_replace_categories): When !_M_names[1] prepare
	for the general case (full set of names), then do the usual work;
	clean up.

	* src/locale.cc (locale::name()): Reserve space in __ret.
	* src/locale_init.cc (locale::global(const locale&)): Save
	the name in a temporary.
	* src/localename.cc (locale::locale(const char*)): Reserve space
	in __str.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@81430 138bc75d-0d04-0410-961f-82ee72b054a4

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