Hi! On Fri, Oct 09, 2020 at 08:28:05PM +0200, David Brown wrote: > For 8-bit, 16-bit and 32-bit types, atomic accesses are just simple > loads and stores. These are generated fine. > > But for 64-bit and above, there are library calls to a compiler-provided > library. > Is there any way I can replace this library with my own code here, while > still using the language atomics? Add something in libgcc/config/arm/ ? You might need to add something specific to some configuration (in some t-* file), or maybe add another command line flag. It sounds like you have to add more constraints on what atomic can be used for than what is specified currently. Segher
