[PATCH] D48606: [X86] Use bts/btr/btc for single bit set/clear/complement of a variable bit position

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

In https://reviews.llvm.org/D48606#1144111, @craig.topper wrote:

> Should I add the RMW memory test cases that we definitely shouldn't use BTS/BTR/BTC for?


I would, and explicitly spell `_dontfold` in names so it is obvious that these are intentional.


https://reviews.llvm.org/D48606