[Bug libstdc++/99277] [11 Regression] C++2a synchronisation is inefficient in GCC 11 and can't be fixed later

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99277

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Regarding 32-bit vs. 64-bit futex, I guess it depends on what the 64-bit object
holds, if it holds a counter, the usual way how to handle it is to do futex on
the least significant half of the counter.