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r=Mark-Simulacrum
Ignore comments in tidy-filelength
Ref https://github.com/rust-lang/rust/issues/60302#issuecomment-652402127
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more clippy::complexity fixes
(also a couple of clippy::perf fixes)
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During const eval, this replaces calls to core::panicking::panic_fmt and
std::panicking::being_panic_fmt with a call to a new const fn:
core::panicking::const_panic_fmt. That function uses
fmt::Arguments::as_str() to get the str and calls panic_str with that
instead.
panic!() invocations with formatting arguments are still not accepted,
as the creation of such a fmt::Arguments cannot be done in constant
functions right now.
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Add hir::GenericArg::Infer
In order to extend inference to consts, make an Infer type on hir::GenericArg.
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Store all HIR owners in the same container
This replaces the previous storage in a BTreeMap for each of Item/ImplItem/TraitItem/ForeignItem.
This should allow for a more compact storage.
Based on https://github.com/rust-lang/rust/pull/83114
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dont provide fwd declared params to cg defaults
Fixes #83938
```rust
#![feature(const_evaluatable_checked, const_generics, const_generics_defaults)]
#![allow(incomplete_features)]
pub struct Bar<const N: usize, const M: usize = { N + 1 }>;
pub fn foo<const N1: usize>() -> Bar<N1> { loop {} }
fn main() {}
```
This PR makes this code no longer ICE, it was ICE'ing previously because when building substs for `Bar<N1>` we would subst the anon ct: `ConstKind::Unevaluated({N + 1}, substs: [N, M])` with substs of `[N1]`. the anon const has forward declared params supplied though so we end up trying to substitute the provided `M` param which causes the ICE.
This PR doesn't handle the predicates of the const so
```rust
trait Foo<const N: usize> { const Assoc: usize; }
pub struct Bar<const N: usize = { <()>::Assoc }> where (): Foo<N>;
```
Resolves to `<() as Foo<N>>::Assoc` which can allow for using fwd declared params indirectly.
```rust
trait Foo<const N: usize> {}
struct Bar<const N: usize = { 2 + 3 }> where (): Foo<N>;
```
This code also ICEs under this PR because instantiating the default's predicates causes an ICE as predicates_of contains predicates with fwd declared params
PR was briefly discussed [in this zulip thread](https://rust-lang.zulipchat.com/#narrow/stream/260443-project-const-generics/topic/evil.20preds.20in.20param.20env.20.2386580)
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Recognize bounds on impls as const bounds
r? ```@oli-obk```
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Reduce the amount of untracked state in TyCtxt -- Take 2
Main part of #85153
The offending line (https://github.com/rust-lang/rust/pull/85153#discussion_r642866298) is replaced by a FIXME until the possible bug and the perf concern are both resolved.
r? `@Aaron1011`
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sexxi-goose:use-diagnostic-item-for-rfc2229-migration, r=nikomatsakis
Use diagnostic items instead of lang items for rfc2229 migrations
This PR removes the `Send`, `UnwindSafe` and `RefUnwindSafe` lang items introduced in https://github.com/rust-lang/rust/pull/84730, and uses diagnostic items instead to check for `Send`, `UnwindSafe` and `RefUnwindSafe` traits for RFC2229 migrations.
r? ```@nikomatsakis```
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r=michaelwoerister
Reland "Merge CrateDisambiguator into StableCrateId"
Reverts https://github.com/rust-lang/rust/pull/85891 as this revert of #85804 made perf even worse.
r? `@Mark-Simulacrum`
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This reverts commit 6c5b6985fdce0921fe4ac0247fd026355953c1ea.
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This reverts commit 8176ab8bc18fdd7d3c2cf7f720c51166364c33a3.
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Specify the kind of the item for E0121
Fixes #86005
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Add MIR pass to lower call to `core::slice::len` into `Len` operand
During some larger experiment with range analysis I've found that code like `let l = slice.len()` produces different MIR then one found in bound checks. This optimization pass replaces terminators that are calls to `core::slice::len` with just a MIR operand and Goto terminator.
It uses some heuristics to remove the outer borrow that is made to call `core::slice::len`, but I assume it can be eliminated, just didn't find how.
Would like to express my gratitude to `@oli-obk` who helped me a lot on Zullip
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Remove some last remants of {push,pop}_unsafe!
These macros have already been removed, but there was still some code handling these macros. That code is now removed.
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This reverts commit d0ec85d3fb6d322496cb8f4bc1c21e19f23284ad.
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This reverts commit 3abdebe79d9a3a2256a36fe8f408dad6a466f89f.
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These macros have already been removed, but there was still some code
handling these macros. That code is now removed.
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Remove unused feature gates
The first commit removes a usage of a feature gate, but I don't expect it to be controversial as the feature gate was only used to workaround a limitation of rust in the past. (closures never being `Clone`)
The second commit uses `#[allow_internal_unstable]` to avoid leaking the `trusted_step` feature gate usage from inside the index newtype macro. It didn't work for the `min_specialization` feature gate though.
The third commit removes (almost) all feature gates from the compiler that weren't used anyway.
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Miscellaneous inlining improvements
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