Rollup merge of rust-lang#107101 - compiler-errors:perf-106309-1, r=p…

…etrochenkov Filter param-env predicates for errors before calling `to_opt_poly_trait_pred` cc rust-lang#106309 rust-lang#106757 (comment) r? `@ghost`
JohnTitor · Jan 23, 2023 · 1702349 · 1702349
2 parents ae15d10 + 096f454
commit 1702349
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs b/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs
@@ -174,8 +174,8 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
             .param_env
             .caller_bounds()
             .iter()
-            .filter_map(|p| p.to_opt_poly_trait_pred())
-            .filter(|p| !p.references_error());
+            .filter(|p| !p.references_error())
+            .filter_map(|p| p.to_opt_poly_trait_pred());
 
         // Micro-optimization: filter out predicates relating to different traits.
         let matching_bounds =