Lazy DefPath decoding for incremental compilation

2020-07-29 12:26:15 -04:00
parent db79d2f637
commit e935d3832c
11 changed files with 275 additions and 43 deletions
--- a/compiler/rustc_middle/src/middle/cstore.rs
+++ b/compiler/rustc_middle/src/middle/cstore.rs
@@ -191,6 +191,12 @@ pub trait CrateStore {
    fn def_path_hash(&self, def: DefId) -> DefPathHash;
    fn all_def_path_hashes_and_def_ids(&self, cnum: CrateNum) -> Vec<(DefPathHash, DefId)>;
    fn num_def_ids(&self, cnum: CrateNum) -> usize;
+    fn def_path_hash_to_def_id(
+        &self,
+        cnum: CrateNum,
+        index_guess: u32,
+        hash: DefPathHash,
+    ) -> Option<DefId>;

    // "queries" used in resolve that aren't tracked for incremental compilation
    fn crate_name_untracked(&self, cnum: CrateNum) -> Symbol;