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Revert r273664 

Revert change until build issues with MSVC can be resolved.

llvm-svn: 273670
This commit is contained in:
Hubert Tong 2016-06-24 12:25:15 +00:00
parent 0d97270ae5
commit 3e2c30d447
1 changed files with 0 additions and 44 deletions
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44
llvm/include/llvm/Support/TrailingObjects.h
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@ -342,50 +342,6 @@ public:
TrailingTys, size_t>::type... Counts) {
return sizeof(BaseTy) + ParentType::additionalSizeToAllocImpl(0, Counts...);
}
/// A type where its ::with_counts template member has a ::type member
/// suitable for use as uninitialized storage for an object with the given
/// trailing object counts. The template arguments are similar to those
/// of additionalSizeToAlloc.
///
/// Use with FixedSizeStorageOwner, e.g.:
///
/// \code{.cpp}
///
/// MyObj::FixedSizeStorage<void *>::with_counts<1u>::type myStackObjStorage;
/// MyObj::FixedSizeStorageOwner
/// myStackObjOwner(new ((void *)&myStackObjStorage) MyObj);
/// MyObj *const myStackObjPtr = myStackObjOwner.get();
///
/// \endcode
template <typename... Tys> struct FixedSizeStorage {
template <size_t... Counts> struct with_counts {
typedef llvm::AlignedCharArray<
llvm::AlignOf<BaseTy>::Alignment, totalSizeToAlloc<Tys...>(Counts...)
> type;
};
};
/// A type that acts as the owner for an object placed into fixed storage.
class FixedSizeStorageOwner {
public:
FixedSizeStorageOwner(BaseTy *p) : p(p) {}
~FixedSizeStorageOwner() {
assert(p && "FixedSizeStorageOwner owns null?");
p->~BaseTy();
}
BaseTy *get() { return p; }
const BaseTy *get() const { return p; }
private:
FixedSizeStorageOwner(const FixedSizeStorageOwner &) = delete;
FixedSizeStorageOwner(FixedSizeStorageOwner &&) = delete;
FixedSizeStorageOwner &operator=(const FixedSizeStorageOwner &) = delete;
FixedSizeStorageOwner &operator=(FixedSizeStorageOwner &&) = delete;
BaseTy *const p;
};
};
} // end namespace llvm