…ore removal

This requires digging up ffee956
and reading the comments there to understand that the callee in
resolve_closure previously directly handled a function pointer value.

Signed-off-by: Jens Reidel <adrian@travitia.xyz>

Fix a mix-up of a block with its predecessors in handling of SwitchInt
edge effects for backward analysis. Note that this functionality is
currently unused, so change has no practical impact.

Partially documents the situation due to LLVM CFI.

Those effects are untested and unused. Remove them along with
the implementation of `BasicBlocks::switch_sources`.

…jdonszelmann

Port several trait/coherence-related attributes the new attribute system

Part of rust-lang#131229

This ports:
- `#[const_trait]`
- `#[rustc_deny_explicit_impl]`
- `#[rustc_do_not_implement_via_object]`
- `#[rustc_coinductive]`
- `#[type_const]`
- `#[rustc_specialization_trait]`
- `#[rustc_unsafe_specialization_marker]`
- `#[marker]`
- `#[fundamental]`
- `#[rustc_paren_sugar]`
- `#[rustc_allow_incoherent_impl]`
- `#[rustc_coherence_is_core]`

This also changes `#[marker]` to error on duplicates instead of warning.
cc rust-lang#142838, but I don't think it matters too much, since it's unstable.

r? ``@oli-obk``

fix: correct assertion to check for 'noinline' attribute presence before removal

Clarify and expand documentation for std::sys_common dependency structure

This PR makes a minor improvement to the module-level documentation of std::sys_common:

Replaces the lowercase “dag” with the more standard and explicit form “DAG (Directed Acyclic Graph)” for clarity.

…en-backend-stuff, r=bjorn3,fee1-dead

compiler: doc/comment some codegen-for-functions interfaces

An out-of-date comment gets updated and some underdocumented functions get documented.

… r=jieyouxu

Add target maintainer information for aarch64-unknown-linux-musl

Mentioning ``@famfo`` so that they can review the documentation. We're both very invested in this target; I originally promoted it to tier 2 with host tools in rust-lang#76420 back in 2020.

Fix typos in function names in the `target_feature` test

Seems like `test1` was copy-pasted but forgotten to be renamed after.

Bump `src/tools/x` to Edition 2024 and some cleanups

- Some clippy fixes
- Bump `src/tools/x` to Edition 2024

Remove support for SwitchInt edge effects in backward dataflow

Those effects are untested and unused. Remove them along with the implementation of `BasicBlocks::switch_sources`.

build-helper: clippy fixes