On Thu, 23 Nov 2023 03:14:27 GMT, David Holmes wrote:
>> As discussed in JBS all platforms (some tweaks to Zero are in progress)
>> actually do support `cx8` i.e. 64-bit compare-and-exchange, so we can strip
>> out the locked-based alternatives to using it and just add a guarantee that
>> it i
On Wed, 22 Nov 2023 21:57:57 GMT, Daniel D. Daugherty
wrote:
>> My point is that it is such an easy thing to do: leave the "cx8" flag
>> sensing code in, and keep setting up `_supports_cx8` based on it for
>> `!_LP64` paths. This both provides more safety by failing cleanly on non-CX8
>> plat
> As discussed in JBS all platforms (some tweaks to Zero are in progress)
> actually do support `cx8` i.e. 64-bit compare-and-exchange, so we can strip
> out the locked-based alternatives to using it and just add a guarantee that
> it is true at runtime. And all platforms except some ARM variant
