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Only populate local_def_path_hash_to_def_id when needed

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Aaron Hill 2020-11-19 15:24:57 -05:00
parent e935d3832c
commit 6a9dbd2e0e
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GPG Key ID: B4087E510E98B164
1 changed files with 6 additions and 3 deletions
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9
compiler/rustc_middle/src/ty/query/on_disk_cache.rs
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@ -98,7 +98,10 @@ pub struct OnDiskCache<'sess> {
latest_foreign_def_path_hashes: Lock<FxHashMap<DefPathHash, RawDefId>>,
// Maps `DefPathHashes` to their corresponding `LocalDefId`s for all
// local items in the current compilation session.
// local items in the current compilation session. This is only populated
// when we are in incremental mode and have loaded a pre-existing cache
// from disk, since this map is only used when deserializing a `DefPathHash`
// from the incremental cache.
local_def_path_hash_to_def_id: FxHashMap<DefPathHash, LocalDefId>,
// Caches all lookups of `DefPathHashes`, both for local and foreign
// definitions. A definition from the previous compilation session
@ -215,7 +218,7 @@ impl<'sess> OnDiskCache<'sess> {
}
}
pub fn new_empty(source_map: &'sess SourceMap, definitions: &Definitions) -> Self {
pub fn new_empty(source_map: &'sess SourceMap) -> Self {
Self {
serialized_data: Vec::new(),
file_index_to_stable_id: Default::default(),
@ -232,7 +235,7 @@ impl<'sess> OnDiskCache<'sess> {
hygiene_context: Default::default(),
foreign_def_path_hashes: Default::default(),
latest_foreign_def_path_hashes: Default::default(),
local_def_path_hash_to_def_id: make_local_def_path_hash_map(definitions),
local_def_path_hash_to_def_id: Default::default(),
def_path_hash_to_def_id_cache: Default::default(),
}
}