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Use __builtin_operator_new/__builtin_operator_delete when available. This

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allows allocations and deallocations to be optimized out.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@210211 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Smith
2014-06-04 19:54:15 +00:00
parent 0707b67ac3
commit 73c1fce21c
6 changed files with 55 additions and 26 deletions
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4
include/__sso_allocator
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@@ -55,14 +55,14 @@ public:
__allocated_ = true;
return (pointer)&buf_;
}
return static_cast<pointer>(::operator new(__n * sizeof(_Tp)));
return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp)));
}
_LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type)
{
if (__p == (pointer)&buf_)
__allocated_ = false;
else
::operator delete(__p);
_VSTD::__deallocate(__p);
}
_LIBCPP_INLINE_VISIBILITY size_type max_size() const throw() {return size_type(~0) / sizeof(_Tp);}