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Move def_path_hash_to_def_id to rustc_middle.

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This commit is contained in:
Camille GILLOT 2021-10-16 17:13:02 +02:00
parent 88c6d3de95
commit e53404cca6
3 changed files with 23 additions and 28 deletions
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6
compiler/rustc_middle/src/dep_graph/dep_node.rs
View File

@ -338,11 +338,7 @@ impl DepNodeExt for DepNode {
/// has been removed.
fn extract_def_id(&self, tcx: TyCtxt<'tcx>) -> Option<DefId> {
if self.kind.fingerprint_style() == FingerprintStyle::DefPathHash {
Some(
tcx.on_disk_cache
.as_ref()?
.def_path_hash_to_def_id(tcx, DefPathHash(self.hash.into())),
)
Some(tcx.def_path_hash_to_def_id(DefPathHash(self.hash.into())))
} else {
None
}

26
compiler/rustc_middle/src/ty/context.rs
View File

@ -79,11 +79,6 @@ pub trait OnDiskCache<'tcx>: rustc_data_structures::sync::Sync {
where
Self: Sized;
/// Converts a `DefPathHash` to its corresponding `DefId` in the current compilation
/// session, if it still exists. This is used during incremental compilation to
/// turn a deserialized `DefPathHash` into its current `DefId`.
fn def_path_hash_to_def_id(&self, tcx: TyCtxt<'tcx>, def_path_hash: DefPathHash) -> DefId;
fn drop_serialized_data(&self, tcx: TyCtxt<'tcx>);
fn serialize(&self, tcx: TyCtxt<'tcx>, encoder: &mut FileEncoder) -> FileEncodeResult;
@ -1301,6 +1296,27 @@ impl<'tcx> TyCtxt<'tcx> {
}
}
/// Converts a `DefPathHash` to its corresponding `DefId` in the current compilation
/// session, if it still exists. This is used during incremental compilation to
/// turn a deserialized `DefPathHash` into its current `DefId`.
pub fn def_path_hash_to_def_id(self, hash: DefPathHash) -> DefId {
debug!("def_path_hash_to_def_id({:?})", hash);
let stable_crate_id = hash.stable_crate_id();
// If this is a DefPathHash from the local crate, we can look up the
// DefId in the tcx's `Definitions`.
if stable_crate_id == self.sess.local_stable_crate_id() {
self.untracked_resolutions.definitions.local_def_path_hash_to_def_id(hash).to_def_id()
} else {
// If this is a DefPathHash from an upstream crate, let the CrateStore map
// it to a DefId.
let cstore = &self.untracked_resolutions.cstore;
let cnum = cstore.stable_crate_id_to_crate_num(stable_crate_id);
cstore.def_path_hash_to_def_id(cnum, hash)
}
}
pub fn def_path_debug_str(self, def_id: DefId) -> String {
// We are explicitly not going through queries here in order to get
// crate name and stable crate id since this code is called from debug!()

19
compiler/rustc_query_impl/src/on_disk_cache.rs
View File

@ -358,23 +358,6 @@ impl<'sess> rustc_middle::ty::OnDiskCache<'sess> for OnDiskCache<'sess> {
Ok(())
})
}
fn def_path_hash_to_def_id(&self, tcx: TyCtxt<'tcx>, hash: DefPathHash) -> DefId {
debug!("def_path_hash_to_def_id({:?})", hash);
let stable_crate_id = hash.stable_crate_id();
// If this is a DefPathHash from the local crate, we can look up the
// DefId in the tcx's `Definitions`.
if stable_crate_id == tcx.sess.local_stable_crate_id() {
tcx.definitions_untracked().local_def_path_hash_to_def_id(hash).to_def_id()
} else {
// If this is a DefPathHash from an upstream crate, let the CrateStore map
// it to a DefId.
let cnum = tcx.cstore_untracked().stable_crate_id_to_crate_num(stable_crate_id);
tcx.cstore_untracked().def_path_hash_to_def_id(cnum, hash)
}
}
}
impl<'sess> OnDiskCache<'sess> {
@ -764,7 +747,7 @@ impl<'a, 'tcx> Decodable<CacheDecoder<'a, 'tcx>> for DefId {
// If we get to this point, then all of the query inputs were green,
// which means that the definition with this hash is guaranteed to
// still exist in the current compilation session.
Ok(d.tcx().on_disk_cache.as_ref().unwrap().def_path_hash_to_def_id(d.tcx(), def_path_hash))
Ok(d.tcx().def_path_hash_to_def_id(def_path_hash))
}
}