[Bug target/119629] mismatch between [power9-64] builtins and their instructions

[segher at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119629

--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #5)
> This needs splitting up in parts.  Maybe then some parts can be correct,
> even!

Of course that requires explanatory comments in the patch submission as well,
and probably in the patch itself.