[llvm-branch-commits] [clang] [ConstantTime][Clang] Add __builtin_ct_select for constant-time selection (PR #166703)

[Eli Friedman via llvm-branch-commits]

https://github.com/efriedma-quic commented:

Needs documentation in clang/docs/LanguageExtensions.rst.  Needs a release note.

I'm still generally skeptical of this approach, but I don't think have anything to say that hasn't already been said on the RFC thread.

https://github.com/llvm/llvm-project/pull/166703