resolve/expand: Cache intermediate results of `#[derive]` expansion#82907

Merged

bors merged 2 commits intorust-lang:masterfrom petrochenkov:dercache

Apr 4, 2021

+100-73

Commits on Apr 4, 2021

resolve/expand: Cache intermediate results of #[derive] expansion
petrochenkov
committed
resolve: Stable order for derive helper attributes
petrochenkov
committed