Auto merge of #153441 - Zalathar:no-liveness, r=<try>

bors · bors · commit c224af974136 · 2026-03-05T13:40:46.000Z
[EXPERIMENT] Cache-on-disk perf experiments for `check_liveness`
diff --git a/compiler/rustc_middle/src/queries.rs b/compiler/rustc_middle/src/queries.rs
@@ -1218,7 +1218,7 @@ rustc_queries! {
     query check_liveness(key: LocalDefId) -> &'tcx rustc_index::bit_set::DenseBitSet<abi::FieldIdx> {
         arena_cache
         desc { "checking liveness of variables in `{}`", tcx.def_path_str(key.to_def_id()) }
-        cache_on_disk_if { tcx.is_typeck_child(key.to_def_id()) }
+        cache_on_disk_if { true }
     }
 
     /// Return the live symbols in the crate for dead code check.

Original file line number	Diff line number	Diff line change
`@@ -1218,7 +1218,7 @@ rustc_queries! {`
`1218`	`1218`	`query check_liveness(key: LocalDefId) -> &'tcx rustc_index::bit_set::DenseBitSet<abi::FieldIdx> {`
`1219`	`1219`	`arena_cache`
`1220`	`1220`	desc { "checking liveness of variables in `{}`", tcx.def_path_str(key.to_def_id()) }
`1221`		`- cache_on_disk_if { tcx.is_typeck_child(key.to_def_id()) }`
	`1221`	`+ cache_on_disk_if { true }`
`1222`	`1222`	`}`
`1223`	`1223`
`1224`	`1224`	`/// Return the live symbols in the crate for dead code check.`