https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95766
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- The ABI specifies 'a' is appropriately extended to %rdi IIRC
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95766
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- The ABI specifies 'a' is appropriately extended to %rdi IIRC