Auto merge of #95418 - cjgillot:more-disk, r=davidtwco

Cache more queries on disk

One of the principles of incremental compilation is to allow saving results on disk to avoid recomputing them.
This PR investigates persisting a lot of queries whose result are to be saved into metadata.
Some of the queries are cheap reads from HIR, but we may also want to get rid of these reads for incremental lowering.

compiler/rustc_middle/src/ty/mod.rs

@@ -227,7 +227,7 @@ impl fmt::Display for ImplPolarity {
     }
 }
 
-#[derive(Clone, Debug, PartialEq, Eq, Copy, Hash, TyEncodable, TyDecodable, HashStable)]
+#[derive(Clone, Debug, PartialEq, Eq, Copy, Hash, Encodable, Decodable, HashStable)]
 pub enum Visibility {
     /// Visible everywhere (including in other crates).
     Public,
@@ -1628,7 +1628,7 @@ where
     }
 }
 
-#[derive(Copy, Clone, Debug, HashStable)]
+#[derive(Copy, Clone, Debug, HashStable, Encodable, Decodable)]
 pub struct Destructor {
     /// The `DefId` of the destructor method
     pub did: DefId,