experiment query caching

jdonszelmann · jdonszelmann · commit d576911a628c · 2025-11-12T15:25:40.000+01:00
diff --git a/compiler/rustc_middle/src/query/mod.rs b/compiler/rustc_middle/src/query/mod.rs
@@ -2759,9 +2759,10 @@ rustc_queries! {
     }
 
     /// Returns a list of all `externally implementable items` crate.
-    query externally_implementable_items(_: CrateNum) -> &'tcx FxIndexMap<DefId, (EiiDecl, FxIndexMap<DefId, EiiImpl>)> {
+    query externally_implementable_items(cnum: CrateNum) -> &'tcx FxIndexMap<DefId, (EiiDecl, FxIndexMap<DefId, EiiImpl>)> {
         arena_cache
         desc { "looking up the externally implementable items of a crate" }
+        cache_on_disk_if { *cnum == LOCAL_CRATE }
         separate_provide_extern
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -2759,9 +2759,10 @@ rustc_queries! {`
`2759`	`2759`	`}`
`2760`	`2760`
`2761`	`2761`	/// Returns a list of all `externally implementable items` crate.
`2762`		`- query externally_implementable_items(_: CrateNum) -> &'tcx FxIndexMap<DefId, (EiiDecl, FxIndexMap<DefId, EiiImpl>)> {`
	`2762`	`+ query externally_implementable_items(cnum: CrateNum) -> &'tcx FxIndexMap<DefId, (EiiDecl, FxIndexMap<DefId, EiiImpl>)> {`
`2763`	`2763`	`arena_cache`
`2764`	`2764`	`desc { "looking up the externally implementable items of a crate" }`
	`2765`	`+ cache_on_disk_if { *cnum == LOCAL_CRATE }`
`2765`	`2766`	`separate_provide_extern`
`2766`	`2767`	`}`
`2767`	`2768`	`}`