[Bug middle-end/111523] Unexpected performance regression with -ftrivial-auto-var-init=zero for e.g. systemctl unmask

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111523

--- Comment #3 from Sam James <sjames at gcc dot gnu.org> ---
There's some trace output at
https://github.com/systemd/systemd/issues/26950#issue-1637752077 but it's not
quite the same as perf output.

But they do identify some bad functions:
"""
Observations:

    manager_clear_jobs_and_units takes ~2s instead of ~1s
    manager_enumerate takes ~6s instead of ~0.8s (!!)
    manager_deserialize takes ~1s instead of ~0.2s
"""