[PATCH] D132407: [ADT] Add llvm::ctpop to <bit> helper wrapper

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

In D132407#3740594 <https://reviews.llvm.org/D132407#3740594>, @tschuett wrote:

> clang also supports __builtin_popcount:
> https://clang.llvm.org/docs/LanguageExtensions.html

Yeah - its just a copy + paste from MathExtras.h so far - I'll add a __has_builtin()


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https://reviews.llvm.org/D132407