[Bug target/120120] [16 Regression] gcc-16: performance regression with -O3 compared to gcc-15

[manuel.lauss at googlemail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120120

--- Comment #1 from Manuel Lauss <manuel.lauss at googlemail dot com> ---
Bisection points to a670ebde3995481225ec62b29686ec07a21e5c10 (Drop
targetm.promote_prototypes from C, C++ and Ada frontends) as culprit.