b582f807fa
[perf] Delay the construction of early lint diag structs
Attacks some of the perf regressions from https://github.com/rust-lang/rust/pull/124417#issuecomment-2123700666.
See individual commits for details. The first three commits are not strictly necessary.
However, the 2nd one (
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| .. | ||
| diagnostics | ||
| symbols | ||
| current_version.rs | ||
| extension.rs | ||
| hash_stable.rs | ||
| lib.rs | ||
| lift.rs | ||
| query.rs | ||
| serialize.rs | ||
| symbols.rs | ||
| type_foldable.rs | ||
| type_visitable.rs | ||