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Implement new effects desugaring
cc `@rust-lang/project-const-traits.` Will write down notes once I have finished.
* [x] See if we want `T: Tr` to desugar into `T: Tr, T::Effects: Compat<true>`
* [x] Fix ICEs on `type Assoc: ~const Tr` and `type Assoc<T: ~const Tr>`
* [ ] add types and traits to minicore test
* [ ] update rustc-dev-guide
Fixes #119717
Fixes #123664
Fixes #124857
Fixes #126148
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Fixes #126573
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the specialized impl
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This reverts commit eda4a35f365535af72118118a3597edf5a13c12d, reversing
changes made to eb6b35b5bcb3c2a594cb29cd478aeb2893f49d30.
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We are gonna need it to uplift EarlyBinder
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And explain when it should be used.
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`has_typeck_results` doesnt need to be a query
self-explanatory
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Explainer: https://zetanumbers.github.io/book/async-drop-design.html
https://github.com/rust-lang/rust/pull/121801
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Make `thir_tree` and `thir_flat` into hooks
No need for them to be queries, since they are only called with `-Zunpretty`
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Provide suggestion to dereference closure tail if appropriate
When encoutnering a case like
```rust
use std::collections::HashMap;
fn main() {
let vs = vec![0, 0, 1, 1, 3, 4, 5, 6, 3, 3, 3];
let mut counts = HashMap::new();
for num in vs {
let count = counts.entry(num).or_insert(0);
*count += 1;
}
let _ = counts.iter().max_by_key(|(_, v)| v);
```
produce the following suggestion
```
error: lifetime may not live long enough
--> $DIR/return-value-lifetime-error.rs:13:47
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LL | let _ = counts.iter().max_by_key(|(_, v)| v);
| ------- ^ returning this value requires that `'1` must outlive `'2`
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| | return type of closure is &'2 &i32
| has type `&'1 (&i32, &i32)`
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help: dereference the return value
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LL | let _ = counts.iter().max_by_key(|(_, v)| **v);
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```
Fix #50195.
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When encoutnering a case like
```rust
//@ run-rustfix
use std::collections::HashMap;
fn main() {
let vs = vec![0, 0, 1, 1, 3, 4, 5, 6, 3, 3, 3];
let mut counts = HashMap::new();
for num in vs {
let count = counts.entry(num).or_insert(0);
*count += 1;
}
let _ = counts.iter().max_by_key(|(_, v)| v);
```
produce the following suggestion
```
error: lifetime may not live long enough
--> $DIR/return-value-lifetime-error.rs:13:47
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LL | let _ = counts.iter().max_by_key(|(_, v)| v);
| ------- ^ returning this value requires that `'1` must outlive `'2`
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| | return type of closure is &'2 &i32
| has type `&'1 (&i32, &i32)`
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help: dereference the return value
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LL | let _ = counts.iter().max_by_key(|(_, v)| **v);
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```
Fix #50195.
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This also remove safety information from MIR.
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Replace `mir_built` query with a hook and use mir_const everywhere instead
A small perf improvement due to less dep graph handling.
Mostly just a cleanup to get rid of one of our many mir queries
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Add `tag_for_variant` query
This query allows for sharing code between `rustc_const_eval` and `rustc_transmutability`. It's a precursor to a PR I'm working on to entirely replace the bespoke layout computations in `rustc_transmutability`.
r? `@compiler-errors`
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This query allows for sharing code between `rustc_const_eval` and
`rustc_transmutability`.
Also moves `DummyMachine` to `rustc_const_eval`.
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Avoid invoking the `intrinsic` query for DefKinds other than `Fn` or `AssocFn`
fixes the perf regression from https://github.com/rust-lang/rust/pull/120675 by only invoking (and thus inserting into the dep graph) the `intrinsic` query if the `DefKind` matches items that can actually be intrinsics
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Merge `collect_mod_item_types` query into `check_well_formed`
follow-up to https://github.com/rust-lang/rust/pull/121154
this removes more potential parallel-compiler bottlenecks and moves diagnostics for the same items next to each other, instead of grouping diagnostics by analysis kind
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Remove `feed_local_def_id`
best reviewed commit by commit
Basically I returned `TyCtxtFeed` from `create_def` and then preserved that in the local caches
based on https://github.com/rust-lang/rust/pull/121084
r? ````@petrochenkov````
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Uplift some feeding out of `associated_type_for_impl_trait_in_impl` and into queries
This PR moves the `type_of` and `generics_of` query feeding out of `associated_type_for_impl_trait_in_impl`, since eagerly feeding results in query cycles due to a subtle interaction with `resolve_bound_vars`.
Fixes #122019
r? spastorino
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