Remove precise placeholder tracking from region inference#130227

Open

amandasystems wants to merge 7 commits intorust-lang:mainfrom

amandasystems:remove-placeholders-completely

Commits on Jun 25, 2025

Remove precise placeholder tracking during region inference
amandasystems
committed
Move the placeholder-to-region vid mapping out of `MirTypckRegionConstraints`
amandasystems
committed
Simplify now that placeholders are gone
amandasystems
committed