[Bug middle-end/56314] Please allow per-function specification of register conventions

[hpa at zytor dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56314

--- Comment #6 from H. Peter Anvin <hpa at zytor dot com> ---
Unfortunately that's not really possible given the way the way the level does
runtime patching (which isn't going to change, sorry.) At the very least we
would need a *lot* more compiler support to give LTO all the information that
it needs; say a *very* minimum LTO would need to support ORC metadata.