Split `infer` query into two for better profiling

This is the same change as we did with `crate_def_map` and it does seem
that we mostly spend time in salsa, without recomputing much on
rust-analyzer side.

Example output:

```
 233ms - handle_inlay_hints
      163ms - get_inlay_hints
          163ms - SourceAnalyzer::new
               67ms - def_with_body_from_child_node
                   67ms - analyze_container
                       67ms - analyze_container
                           67ms - Module::from_definition
                               67ms - Module::from_file
                                   67ms - crate_def_map
                                        0ms - parse_macro_query (6 calls)
                                        0ms - raw_items_query (1 calls)
                                       66ms - ???
                            0ms - crate_def_map (1 calls)
                        0ms - crate_def_map (1 calls)
               96ms - infer
                    2ms - trait_solve_query (2 calls)
                   94ms - ???
                0ms - body_with_source_map_query (1 calls)
                0ms - crate_def_map (1 calls)
      [...]
```

Signed-off-by: Michal Terepeta <[email protected]>

1 files changed, 2 insertions, 2 deletions

diff --git a/crates/ra_ide/src/change.rs b/crates/ra_ide/src/change.rs
index 4585bf522..f92950b71 100644
--- a/crates/ra_ide/src/change.rs
+++ b/crates/ra_ide/src/change.rs
@@ -273,7 +273,7 @@ impl RootDatabase {
         self.query(hir::db::BodyWithSourceMapQuery).sweep(sweep);
 
         self.query(hir::db::ExprScopesQuery).sweep(sweep);
-        self.query(hir::db::InferQuery).sweep(sweep);
+        self.query(hir::db::DoInferQuery).sweep(sweep);
         self.query(hir::db::BodyQuery).sweep(sweep);
     }
 
@@ -320,7 +320,7 @@ impl RootDatabase {
             hir::db::LangItemQuery
             hir::db::DocumentationQuery
             hir::db::ExprScopesQuery
-            hir::db::InferQuery
+            hir::db::DoInferQuery
             hir::db::TyQuery
             hir::db::ValueTyQuery
             hir::db::FieldTypesQuery