This commit was obtained by repeatedly inlining and simplifying.

…atthewjasper

Simplifications in match lowering

A series of small simplifications and deduplications in the MIR lowering of patterns.

r? `@matthewjasper`

…atthewjasper

Simplifications in match lowering

A series of small simplifications and deduplications in the MIR lowering of patterns.

r? ``@matthewjasper``

…atthewjasper

Simplifications in match lowering

A series of small simplifications and deduplications in the MIR lowering of patterns.

r? ```@matthewjasper```

…iaskrgr

Rollup of 9 pull requests

Successful merges:

 - rust-lang#126822 (Bootstrap command refactoring: port more `Command` usages to `BootstrapCmd` (step 2))
 - rust-lang#126835 (Simplifications in match lowering)
 - rust-lang#126953 (std: separate TLS key creation from TLS access)
 - rust-lang#127045 (Rename `super_predicates_of` and similar queries to `explicit_*` to note that they're not elaborated)
 - rust-lang#127075 (rustc_data_structures: Explicitly check for 64-bit atomics support)
 - rust-lang#127101 (remove redundant match statement from dataflow const prop)
 - rust-lang#127102 (Rename fuchsia builder and bump Fuchsia)
 - rust-lang#127103 (Move binder and polarity parsing into `parse_generic_ty_bound`)
 - rust-lang#127108 (unify `dylib` and `bin_helpers` and create `shared_helpers::parse_value_from_args`)

r? `@ghost`
`@rustbot` modify labels: rollup

Rollup merge of rust-lang#126835 - Nadrieril:reify-decision-tree, r=matthewjasper

Simplifications in match lowering

A series of small simplifications and deduplications in the MIR lowering of patterns.

r? ````@matthewjasper````