[Bug target/122018] x86 doesn't use BTS bitmanip instruction to both set and test bit

[andi-gcc at firstfloor dot org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122018

Andi Kleen <andi-gcc at firstfloor dot org> changed:

           What    |Removed                     |Added
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                 CC|                            |andi-gcc at firstfloor dot org

--- Comment #8 from Andi Kleen <andi-gcc at firstfloor dot org> ---
uops.info claims that the memory variants have rather long latencies, so it may
not be a performance win.