11 Oct
2022
11 Oct
'22
15:12
On Sun, 9 Oct 2022 17:32:26 +0200 Stefan Brüns wrote:
Most notably, neither Core2 nor K10 support CMPXCHG16, which is required for proper 64bit support without workarounds.
As already mentioned the cpu flag cx16 is available in Phenom II and Core2. Additional remarks: A) the workaround (if needed) is done by the compiler, B) according to the data it has practically no negative impact on the performance. Maybe the feature is already detected and used at runtime without requiring specific compiler flags. Kind regards, Dieter