Rollup merge of rust-lang#107719 - WaffleLapkin:de-arena-allocates-you-UwU, r=cjgillot

matthiaskrgr · web-flow · commit 401fe5c000d7 · 2023-02-07T17:57:15.000+01:00
Remove `arena_cache` modifier from `upstream_monomorphizations_for`

Arena-caching a pointer is pretty meaningless as far as I can tell.
diff --git a/compiler/rustc_middle/src/query/mod.rs b/compiler/rustc_middle/src/query/mod.rs
@@ -1541,7 +1541,6 @@ rustc_queries! {
     query upstream_monomorphizations_for(def_id: DefId)
         -> Option<&'tcx FxHashMap<SubstsRef<'tcx>, CrateNum>>
     {
-        arena_cache
         desc { |tcx|
             "collecting available upstream monomorphizations for `{}`",
             tcx.def_path_str(def_id),

Original file line number	Diff line number	Diff line change
`@@ -1541,7 +1541,6 @@ rustc_queries! {`
`1541`	`1541`	`query upstream_monomorphizations_for(def_id: DefId)`
`1542`	`1542`	`-> Option<&'tcx FxHashMap<SubstsRef<'tcx>, CrateNum>>`
`1543`	`1543`	`{`
`1544`		`- arena_cache`
`1545`	`1544`	`desc { \|tcx\|`
`1546`	`1545`	"collecting available upstream monomorphizations for `{}`",
`1547`	`1546`	`tcx.def_path_str(def_id),`