vector::emplace_back was mistakenly requiring move assignable.  Fixed that and did a little drive-by optimization at the same time.  This fixes http://llvm.org/bugs/show_bug.cgi?id=12085.

llvm-svn: 151492

llvm-svn: 150542

llvm-svn: 145624

llvm-svn: 145410

llvm-svn: 145407

llvm-svn: 142732

llvm-svn: 142235

Chris Jefferson noted that vector iterator ownership can be transferred from source to target under move construction and move assignment.  This commit makes that happen for debug mode.

llvm-svn: 140023

llvm-svn: 139930

llvm-svn: 139913

llvm-svn: 139711

llvm-svn: 139032

llvm-svn: 137522

avoids bugs where, when the allocator's size_type was smaller than int,
the multiplication or division would cause integral promotions and, with
two different integer types as arguments, deduction of the template
arguments would fail.

llvm-svn: 136540

llvm-svn: 134815

llvm-svn: 134327

llvm-svn: 134190

llvm-svn: 132577

llvm-svn: 125510

Reverting an old optimization that conflicts with the new allocator model, and causes some test casees to compile that shouldn't.

llvm-svn: 122830

llvm-svn: 122057

N3142.  Many of these traits are just placeholders with medium quality emulation; waiting on compiler intrinsics to do it right.

llvm-svn: 119854

llvm-svn: 119395

llvm-svn: 114685

I am experimenting with putting visibility-default attributes on all struct/classes in libc++.  This checkin decorates only basic_string and vector as an experiment, and for review by those in this audience that might know more about visibilty than I do.  If I get no negative feedback on this procedure I will begin to decorate the entire library in this way.

llvm-svn: 113590

Changed __config to react to all of clang's currently documented has_feature flags, and renamed _LIBCPP_MOVE to _LIBCPP_HAS_NO_RVALUE_REFERENCES to be more consistent with the rest of the libc++'s flags, and with clang's nomenclature.

llvm-svn: 113086

llvm-svn: 111750

patch by Jeffrey Yasskin for porting to Ubuntu Hardy.  Everything was accepted except there were some bug fixes needed in <locale> for the __nolocale_* series.  For the apple branch I ended up using templates instead of the var_args solution because it seemed both safer and more efficient.

llvm-svn: 104516

llvm-svn: 103516

llvm-svn: 103490