[PATCH] D51650: Implement target_clones multiversioning

[Roman Lebedev via Phabricator via cfe-commits]

lebedev.ri added a comment.

In D51650#2454830 <https://reviews.llvm.org/D51650#2454830>, @erichkeane wrote:

> Since there seems to be at least a little renewed interest in this from a handful of people lately, I spend the time to rebase this and do some minor cleanup tasks.

FWIW yes, i'm being asked about this periodically (https://github.com/darktable-org/darktable/pull/7075, https://github.com/darktable-org/darktable/pull/7337#discussion_r544925151, etc)
It would be pretty good to be compatible with GCC in this.


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