On Tuesday, 4 August 2020 at 17:36:53 UTC, Michael Reese wrote:
Thanks for suggesting! I tried, and the union works as well, i.e. the function args are registered. But I noticed another thing about all workarounds so far: Even if calls are inlined and arguments end up on the stack, the linker puts code of the wrapper function in my final binary event if it is never explicitly called. So until I find a way to strip of uncalled functions from the binary (not sure the linker can do it), the workarounds don't solve the size problem. But they still make the code run faster.
Try -ffunction-sections -Wl,--gc-sections. That should remove all unreferenced functions. It removes all unreferenced sections, and writes every function into a separate section.
