[PATCH] D18578: BitVector: Add insert() and erase() methods.

[David Blaikie via llvm-commits]

Test cases?
Got a usage in mind?

On Tue, Mar 29, 2016 at 2:34 PM, Matthias Braun via llvm-commits <
llvm-commits at lists.llvm.org> wrote:

> MatzeB created this revision.
> MatzeB added reviewers: dblaikie, echristo, qcolombet.
> MatzeB added a subscriber: llvm-commits.
> MatzeB set the repository for this revision to rL LLVM.
> Herald added a subscriber: mcrosier.
>
> This allows BitVector to be used in contexts exepcting a std::set or
> DenseSet like API.
>
> Repository:
>   rL LLVM
>
> http://reviews.llvm.org/D18578
>
> Files:
>   include/llvm/ADT/BitVector.h
>
> Index: include/llvm/ADT/BitVector.h
> ===================================================================
> --- include/llvm/ADT/BitVector.h
> +++ include/llvm/ADT/BitVector.h
> @@ -295,6 +295,23 @@
>      return *this;
>    }
>
> +  /// Set bit \p Idx to true. This function allows BitVector to be used in
> +  /// contexts expecting std::set/DenseSet like API.
> +  std::pair<reference, bool> insert(unsigned Idx) {
> +    reference ref(*this, Idx);
> +    bool Res = !ref;
> +    ref = true;
> +    return std::make_pair(ref, Res);
> +  }
> +
> +  /// Clear bit \p Idx. This function allows BitVector to be used in
> contexts
> +  /// expecting std::set/DenseSet like API.
> +  bool erase(unsigned Idx) {
> +    bool Res = test(Idx);
> +    reset(Idx);
> +    return Res;
> +  }
> +
>    BitVector &flip() {
>      for (unsigned i = 0; i < NumBitWords(size()); ++i)
>        Bits[i] = ~Bits[i];
>
>
>
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