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

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.

1 files changed, 1 insertions, 1 deletions

diff --git a/compiler/rustc_session/src/session.rs b/compiler/rustc_session/src/session.rs
index 69aa72d899f..3f690ba87ea 100644
--- a/compiler/rustc_session/src/session.rs
+++ b/compiler/rustc_session/src/session.rs
@@ -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};