This avoids a needless query invocation

See rust-lang#91867 for more information.

fix clippy::single_char_pattern perf findings

…_ssa, r=workingjubilee

Remove `in_band_lifetimes` from `rustc_codegen_ssa`

See rust-lang#91867 for more information.

In `compiler/rustc_codegen_ssa/src/coverageinfo/map.rs`, there are several functions with an explicit `'a` lifetime but only a single `&'a self` parameter. These lifetimes should be redundant given lifetime elision, unless the existential `impl Iterator` has weird issues regarding that. Should the redundant lifetimes be removed?

…e_return_type, r=lcnr

Make `TyS::is_suggestable` check for non-suggestable types structually

Not sure if I went overboard checking substs in dyn types, etc. Let me know if I should simplify this function.

Fixes rust-lang#91832

…crum

Add another regression test for unnormalized fn args with Self

Closes rust-lang#91899

Fix a bunch of typos

I hope that none of these files is not supposed to be modified.

FYI, I opened separate PRs for typos in submodules, in the respective repositories
* rust-lang/stdarch#1267
* rust-lang/backtrace-rs#455

…-constification-begins, r=oli-obk

Constify `bool::then{,_some}`

Note on `~const Drop`: it has no effect when called from runtime functions, when called from const contexts, the trait system ensures that the type can be dropped in const contexts.

Use `tcx.def_path_hash` in `ExistentialPredicate.stable_cmp`

This avoids a needless query invocation