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Let a portion of DefPathHash uniquely identify the DefPath's crate.

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This allows to directly map from a DefPathHash to the crate it
originates from, without constructing side tables to do that mapping.

It also allows to reliably and cheaply check for DefPathHash collisions.
This commit is contained in:
Michael Woerister
2021-01-27 14:28:07 +01:00
committed by Michael Woerister
parent a3ed564c13
commit 22d489be76
12 changed files with 181 additions and 27 deletions
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2
compiler/rustc_session/src/session.rs
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@@ -8,7 +8,6 @@ use crate::parse::ParseSess;
use crate::search_paths::{PathKind, SearchPath};
pub use rustc_ast::attr::MarkedAttrs;
pub use rustc_ast::crate_disambiguator::CrateDisambiguator;
pub use rustc_ast::Attribute;
use rustc_data_structures::flock;
use rustc_data_structures::fx::{FxHashMap, FxHashSet};
@@ -23,6 +22,7 @@ use rustc_errors::json::JsonEmitter;
use rustc_errors::registry::Registry;
use rustc_errors::{Applicability, Diagnostic, DiagnosticBuilder, DiagnosticId, ErrorReported};
use rustc_lint_defs::FutureBreakage;
pub use rustc_span::crate_disambiguator::CrateDisambiguator;
use rustc_span::edition::Edition;
use rustc_span::source_map::{FileLoader, MultiSpan, RealFileLoader, SourceMap, Span};
use rustc_span::{sym, SourceFileHashAlgorithm, Symbol};