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Auto merge of #13112 - lowr:patch/auto-trait-bounds, r=Veykril

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Setup infra for handling auto trait bounds disabled due to perf problems

This patch updates some of the partially-implemented functions of `ChalkContext as RustIrDatabase`, namely `adt_datum()` and `impl_provided_for()`. With those, we can now correctly work with auto trait bounds and distinguish methods based on them.

Resolves #7856 (the second code; the first one is resolved by #13074)

**IMPORTANT**: I don't think we want to merge this until #7637 is resolved. Currently this patch introduces A LOT of unknown types and type mismtaches as shown below. This is because we cannot resolve items like `hashbrown::HashMap` in `std` modules, leading to auto trait bounds on them and their dependents unprovable.

|crate (from `rustc-perf@c52ee6` except for r-a)|e3dc5a588f07d6f1d3a0f33051d4af26190abe9e|HEAD of this branch|
|---|---|---|
|rust-analyzer @ e3dc5a588f |exprs: 417528, ??ty: 907 (0%), ?ty: 114 (0%), !ty: 1|exprs: 417528, ??ty: 1704 (0%), ?ty: 403 (0%), !ty: 20|
|ripgrep|exprs: 62120, ??ty: 2 (0%), ?ty: 0 (0%), !ty: 0|exprs: 62120, ??ty: 132 (0%), ?ty: 58 (0%), !ty: 11|
|webrender/webrender|exprs: 94355, ??ty: 49 (0%), ?ty: 16 (0%), !ty: 2|exprs: 94355, ??ty: 429 (0%), ?ty: 130 (0%), !ty: 7|
|diesel|exprs: 132591, ??ty: 401 (0%), ?ty: 5129 (3%), !ty: 31|exprs: 132591, ??ty: 401 (0%), ?ty: 5129 (3%), !ty: 31|
This commit is contained in:
bors 2024-02-19 16:45:59 +00:00
commit 2223b4fa71
7 changed files with 262 additions and 102 deletions
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4
crates/hir/src/lib.rs
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@ -3798,9 +3798,9 @@ impl Type {
// For non-phantom_data adts we check variants/fields as well as generic parameters
TyKind::Adt(adt_id, substitution)
if !db.struct_datum(krate, *adt_id).flags.phantom_data =>
if !db.adt_datum(krate, *adt_id).flags.phantom_data =>
{
let adt_datum = &db.struct_datum(krate, *adt_id);
let adt_datum = &db.adt_datum(krate, *adt_id);
let adt_datum_bound =
adt_datum.binders.clone().substitute(Interner, substitution);
adt_datum_bound