[Bug target/119979] [16 Regression] Recent promote_prototypes change breaks multiple ports

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119979

--- Comment #17 from Jeffrey A. Law <law at gcc dot gnu.org> ---
At this point I don't have a high degree of confidence that we even know the
breadth of breakage -- we know some targets were affected because my tester
flagged them, but no in-depth evaluation of the fallout from HJ's patch.

That's really unfortunate, particularly since HJ has known about these problems
for nearly a year and he's know that the problems touch the ABI space.  Part of
me wants to revert the change, but that's not a great option at this stage.