Because that's now the only crate that uses it.
Moving stuff out of `rustc_middle` is always welcome.
I chose to use `impl crate::MirPass`/`impl crate::MirLint` (with
explicit `crate::`) everywhere because that's the only mention of
`MirPass`/`MirLint` used in all of these files. (Prior to this change,
`MirPass` was mostly imported via `use rustc_middle::mir::*` items.)
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_mir_transform\src\coroutine.rs:1229:11
|
1229 | body: &mut Body<'tcx>,
| ^^^^^^^^^^^^^^^ help: consider changing to: `&Body<'tcx>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_mir_transform\src\nrvo.rs:123:11
|
123 | body: &mut mir::Body<'_>,
| ^^^^^^^^^^^^^^^^^^ help: consider changing to: `&mir::Body<'_>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_mir_transform\src\nrvo.rs:87:34
|
87 | fn local_eligible_for_nrvo(body: &mut mir::Body<'_>) -> Option<Local> {
| ^^^^^^^^^^^^^^^^^^ help: consider changing to: `&mir::Body<'_>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
This one is a heavy `'tcx` user.
Two interesting ones:
This one had the `'tcx` declared on the function, despite the trait taking a `'tcx`:
```diff
-impl Visitor<'_> for UsedLocals {
+impl<'tcx> Visitor<'tcx> for UsedLocals {
fn visit_statement(&mut self, statement: &Statement<'tcx>, location: Location) {
```
This one use in-band for one, and underscore for the other:
```diff
-pub fn remove_dead_blocks(tcx: TyCtxt<'tcx>, body: &mut Body<'_>) {
+pub fn remove_dead_blocks<'tcx>(tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
```
