That's the most frustrating thing about compiler engineering
You fix some feature, some workload, but performance regression appears in other which relied on some bullshit -
unwritten convention, ordering, function name, luck, alignment of the stars, whatever.
You spent 2 weeks fixing a thing and you still have to get back to it because someone is pissed off.
alt Hacker News
That's the most frustrating thing about compiler engineering
You fix some feature, some workload, but performance regression appears in other which relied on some bullshit -
unwritten convention, ordering, function name, luck, alignment of the stars, whatever.
You spent 2 weeks fixing a thing and you still have to get back to it because someone is pissed off.