22c0f628df
Avoid hashing the key twice in `get_query()`. For a single-threaded parallel compiler, this reduces instruction counts across several benchmarks, by up to 2.8%. The commit also adds documentation about `Sharded`'s use of `FxHasher`. r? @Zoxc
131 lines
3.7 KiB
Rust
131 lines
3.7 KiB
Rust
//! The "main crate" of the Rust compiler. This crate contains common
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//! type definitions that are used by the other crates in the rustc
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//! "family". Some prominent examples (note that each of these modules
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//! has their own README with further details).
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//!
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//! - **HIR.** The "high-level (H) intermediate representation (IR)" is
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//! defined in the `hir` module.
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//! - **MIR.** The "mid-level (M) intermediate representation (IR)" is
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//! defined in the `mir` module. This module contains only the
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//! *definition* of the MIR; the passes that transform and operate
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//! on MIR are found in `librustc_mir` crate.
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//! - **Types.** The internal representation of types used in rustc is
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//! defined in the `ty` module. This includes the **type context**
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//! (or `tcx`), which is the central context during most of
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//! compilation, containing the interners and other things.
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//! - **Traits.** Trait resolution is implemented in the `traits` module.
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//! - **Type inference.** The type inference code can be found in the `infer` module;
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//! this code handles low-level equality and subtyping operations. The
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//! type check pass in the compiler is found in the `librustc_typeck` crate.
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//!
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//! For more information about how rustc works, see the [rustc guide].
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//!
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//! [rustc guide]: https://rust-lang.github.io/rustc-guide/
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//!
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//! # Note
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//!
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//! This API is completely unstable and subject to change.
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#![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
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#![feature(arbitrary_self_types)]
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#![feature(box_patterns)]
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#![feature(box_syntax)]
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#![feature(const_fn)]
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#![feature(const_transmute)]
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#![feature(core_intrinsics)]
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#![feature(drain_filter)]
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#![cfg_attr(windows, feature(libc))]
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#![feature(never_type)]
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#![feature(exhaustive_patterns)]
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#![feature(overlapping_marker_traits)]
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#![feature(extern_types)]
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#![feature(nll)]
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#![feature(optin_builtin_traits)]
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#![feature(option_expect_none)]
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#![feature(range_is_empty)]
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#![feature(slice_patterns)]
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#![feature(specialization)]
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#![feature(unboxed_closures)]
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#![feature(thread_local)]
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#![feature(trace_macros)]
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#![feature(trusted_len)]
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#![feature(vec_remove_item)]
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#![feature(stmt_expr_attributes)]
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#![feature(integer_atomics)]
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#![feature(test)]
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#![feature(in_band_lifetimes)]
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#![feature(crate_visibility_modifier)]
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#![feature(log_syntax)]
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#![feature(associated_type_bounds)]
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#![feature(rustc_attrs)]
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#![feature(hash_raw_entry)]
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#![recursion_limit="512"]
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#[macro_use] extern crate bitflags;
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extern crate getopts;
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#[macro_use] extern crate scoped_tls;
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#[cfg(windows)]
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extern crate libc;
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#[macro_use] extern crate rustc_macros;
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#[macro_use] extern crate rustc_data_structures;
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#[macro_use] extern crate log;
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#[macro_use] extern crate syntax;
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#[macro_use] extern crate smallvec;
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// Use the test crate here so we depend on getopts through it. This allow tools to link to both
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// librustc_driver and libtest.
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extern crate test as _;
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#[cfg(test)]
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mod tests;
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#[macro_use]
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mod macros;
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#[macro_use]
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pub mod query;
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#[macro_use]
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pub mod arena;
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pub mod dep_graph;
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pub mod hir;
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pub mod ich;
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pub mod infer;
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pub mod lint;
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pub mod middle {
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pub mod expr_use_visitor;
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pub mod cstore;
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pub mod dependency_format;
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pub mod diagnostic_items;
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pub mod exported_symbols;
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pub mod free_region;
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pub mod lib_features;
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pub mod lang_items;
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pub mod mem_categorization;
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pub mod privacy;
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pub mod reachable;
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pub mod region;
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pub mod recursion_limit;
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pub mod resolve_lifetime;
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pub mod stability;
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pub mod weak_lang_items;
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}
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pub mod mir;
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pub mod session;
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pub mod traits;
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pub mod ty;
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pub mod util {
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pub mod captures;
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pub mod common;
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pub mod nodemap;
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pub mod bug;
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}
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// Allows macros to refer to this crate as `::rustc`
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extern crate self as rustc;
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