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Auto merge of #115920 - Zoxc:depkind-u16, r=cjgillot

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Move `DepKind` to `rustc_query_system` and define it as `u16`

This moves the `DepKind` type to `rustc_query_system` where it's defined with an inner `u16` field. This decouples it from `rustc_middle` and is a step towards letting other crates define dep kinds. It also allows some type parameters to be removed. The `DepKind` trait is replaced with a `Deps` trait. That's used when some operations or information about dep kinds which is unavailable in `rustc_query_system` are still needed.

r? `@cjgillot`
This commit is contained in:
bors 2023-09-22 00:46:13 +00:00
commit b757318718
24 changed files with 509 additions and 519 deletions
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compiler/rustc_middle/src/query/mod.rs
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@ -7,7 +7,6 @@
#![allow(unused_parens)]
use crate::dep_graph;
use crate::dep_graph::DepKind;
use crate::infer::canonical::{self, Canonical};
use crate::lint::LintExpectation;
use crate::metadata::ModChild;