[Bug preprocessor/99313] ICE while changing global target options via pragma

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99313

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
But this results in unexpected behavior when there's functions with arch=z13
vs. arch=z9 and depending on "luck" we then inherit the wrong params where
we should not?

That said, when unifying target/optimize options these should be handled
and stored once, right?