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deque.tcc (deque<>::_M_push_back_aux, [...]): Do not copy unnecessarily to __t_copy. 

2007-11-13  Paolo Carlini  <pcarlini@suse.de>

	* include/bits/deque.tcc (deque<>::_M_push_back_aux,
	_M_push_front_aux): Do not copy unnecessarily to __t_copy.

From-SVN: r130136
This commit is contained in:
Paolo Carlini 2007-11-13 11:35:56 +00:00 committed by Paolo Carlini
parent 983a6f8dd3
commit b4d9ec93d6
2 changed files with 17 additions and 10 deletions
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5
libstdc++-v3/ChangeLog
View File

@ -1,3 +1,8 @@
2007-11-13 Paolo Carlini <pcarlini@suse.de>
* include/bits/deque.tcc (deque<>::_M_push_back_aux,
_M_push_front_aux): Do not copy unnecessarily to __t_copy.
2007-11-12 Chris Jefferson <chris@bubblescope.net>
Paolo Carlini <pcarlini@suse.de>

22
libstdc++-v3/include/bits/deque.tcc
View File

@ -350,21 +350,22 @@ _GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD_D)
void
deque<_Tp, _Alloc>::
_M_push_back_aux(_Args&&... __args)
{
value_type __t_copy(std::forward<_Args>(__args)...);
#else
void
deque<_Tp, _Alloc>::
_M_push_back_aux(const value_type& __t)
{
value_type __t_copy = __t;
#endif
{
_M_reserve_map_at_back();
*(this->_M_impl._M_finish._M_node + 1) = this->_M_allocate_node();
try
{
#ifdef __GXX_EXPERIMENTAL_CXX0X__
this->_M_impl.construct(this->_M_impl._M_finish._M_cur,
_GLIBCXX_MOVE(__t_copy));
std::forward<_Args>(__args)...);
#else
this->_M_impl.construct(this->_M_impl._M_finish._M_cur, __t);
#endif
this->_M_impl._M_finish._M_set_node(this->_M_impl._M_finish._M_node
+ 1);
this->_M_impl._M_finish._M_cur = this->_M_impl._M_finish._M_first;
@ -383,15 +384,12 @@ _GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD_D)
void
deque<_Tp, _Alloc>::
_M_push_front_aux(_Args&&... __args)
{
value_type __t_copy(std::forward<_Args>(__args)...);
#else
void
deque<_Tp, _Alloc>::
_M_push_front_aux(const value_type& __t)
{
value_type __t_copy = __t;
#endif
{
_M_reserve_map_at_front();
*(this->_M_impl._M_start._M_node - 1) = this->_M_allocate_node();
try
@ -399,8 +397,12 @@ _GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD_D)
this->_M_impl._M_start._M_set_node(this->_M_impl._M_start._M_node
- 1);
this->_M_impl._M_start._M_cur = this->_M_impl._M_start._M_last - 1;
#ifdef __GXX_EXPERIMENTAL_CXX0X__
this->_M_impl.construct(this->_M_impl._M_start._M_cur,
_GLIBCXX_MOVE(__t_copy));
std::forward<_Args>(__args)...);
#else
this->_M_impl.construct(this->_M_impl._M_start._M_cur, __t);
#endif
}
catch(...)
{