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//! The "main crate" of the Rust compiler. This crate contains common
//! type definitions that are used by the other crates in the rustc
//! "family". Some prominent examples (note that each of these modules
//! has their own README with further details).
//!
//! - **HIR.** The "high-level (H) intermediate representation (IR)" is
//! defined in the `hir` module.
//! - **MIR.** The "mid-level (M) intermediate representation (IR)" is
//! defined in the `mir` module. This module contains only the
//! *definition* of the MIR; the passes that transform and operate
//! on MIR are found in `rustc_const_eval` crate.
//! - **Types.** The internal representation of types used in rustc is
//! defined in the `ty` module. This includes the **type context**
//! (or `tcx`), which is the central context during most of
//! compilation, containing the interners and other things.
//!
//! For more information about how rustc works, see the [rustc dev guide].
//!
//! [rustc dev guide]: https://rustc-dev-guide.rust-lang.org/
//!
//! # Note
//!
//! This API is completely unstable and subject to change.
#![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
#![feature(allocator_api)]
#![feature(array_windows)]
#![feature(assert_matches)]
#![feature(box_patterns)]
#![feature(core_intrinsics)]
#![feature(discriminant_kind)]
#![feature(exhaustive_patterns)]
#![feature(get_mut_unchecked)]
#![feature(if_let_guard)]
#![feature(negative_impls)]
#![feature(never_type)]
#![feature(extern_types)]
#![feature(new_uninit)]
#![feature(once_cell)]
#![feature(let_chains)]
#![feature(min_specialization)]
#![feature(trusted_len)]
#![feature(type_alias_impl_trait)]
#![feature(associated_type_bounds)]
#![feature(rustc_attrs)]
#![cfg_attr(bootstrap, feature(half_open_range_patterns))]
#![feature(control_flow_enum)]
#![feature(associated_type_defaults)]
#![feature(trusted_step)]
#![feature(try_blocks)]
#![feature(try_reserve_kind)]
#![feature(nonzero_ops)]
#![feature(unwrap_infallible)]
#![feature(decl_macro)]
#![feature(drain_filter)]
#![feature(intra_doc_pointers)]
#![feature(yeet_expr)]
#![feature(result_option_inspect)]
#![feature(const_option)]
#![recursion_limit = "512"]
#![allow(rustc::potential_query_instability)]
#[macro_use]
extern crate bitflags;
#[macro_use]
extern crate rustc_macros;
#[macro_use]
extern crate rustc_data_structures;
#[macro_use]
extern crate tracing;
#[macro_use]
extern crate smallvec;
#[cfg(test)]
mod tests;
#[macro_use]
mod macros;
#[macro_use]
pub mod query;
#[macro_use]
pub mod arena;
#[macro_use]
pub mod dep_graph;
pub(crate) mod error;
pub mod hir;
pub mod infer;
pub mod lint;
pub mod metadata;
pub mod middle;
pub mod mir;
pub mod thir;
pub mod traits;
pub mod ty;
mod values;
pub mod util {
pub mod bug;
pub mod common;
}
// Allows macros to refer to this crate as `::rustc_middle`
extern crate self as rustc_middle;
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