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

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
index 4cebe416354a928fd423f0cd4c56f68af5d3c253..7aa9282b9beceb88301dc76df08af1845b4a101b 100644 (file)
--- a/compiler/rustc_middle/src/query/mod.rs
+++ b/compiler/rustc_middle/src/query/mod.rs
@@ -1541,7 +1541,6 @@
     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),