Rollup merge of #133751 - lcnr:no-trait-solving-on-type, r=compiler-errors

remove `Ty::is_copy_modulo_regions`

Using these functions is likely incorrect if an `InferCtxt` is available, I moved this function to `TyCtxt` (and added it to `LateContext`) and added a note to the documentation that one should prefer `Infer::type_is_copy_modulo_regions` instead.

I didn't yet move `is_sized` and `is_freeze`, though I think we should move these as well.

r? `@compiler-errors` cc #132279

clippy_lints/src/methods/manual_inspect.rs

@@ -148,7 +148,7 @@ pub(crate) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, arg: &Expr<'_>, name:
                                 _ => {},
                             }
                         }
-                        requires_copy |= !ty.is_copy_modulo_regions(cx.tcx, cx.typing_env());
+                        requires_copy |= !cx.type_is_copy_modulo_regions(ty);
                         break;
                     }
                 },
@@ -158,7 +158,7 @@ pub(crate) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, arg: &Expr<'_>, name:
         }
 
         if can_lint
-            && (!requires_copy || arg_ty.is_copy_modulo_regions(cx.tcx, cx.typing_env()))
+            && (!requires_copy || cx.type_is_copy_modulo_regions(arg_ty))
             // This case could be handled, but a fair bit of care would need to be taken.
             && (!requires_deref || arg_ty.is_freeze(cx.tcx, cx.typing_env()))
         {

clippy_lints/src/question_mark.rs

@@ -251,7 +251,7 @@ fn check_is_none_or_err_and_early_return<'tcx>(cx: &LateContext<'tcx>, expr: &Ex
     {
         let mut applicability = Applicability::MachineApplicable;
         let receiver_str = snippet_with_applicability(cx, caller.span, "..", &mut applicability);
-        let by_ref = !caller_ty.is_copy_modulo_regions(cx.tcx, cx.typing_env())
+        let by_ref = !cx.type_is_copy_modulo_regions(caller_ty)
             && !matches!(caller.kind, ExprKind::Call(..) | ExprKind::MethodCall(..));
         let sugg = if let Some(else_inner) = r#else {
             if eq_expr_value(cx, caller, peel_blocks(else_inner)) {

clippy_utils/src/ty.rs

@@ -38,7 +38,7 @@ pub use type_certainty::expr_type_is_certain;
 
 /// Checks if the given type implements copy.
 pub fn is_copy<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool {
-    ty.is_copy_modulo_regions(cx.tcx, cx.typing_env())
+    cx.type_is_copy_modulo_regions(ty)
 }
 
 /// This checks whether a given type is known to implement Debug.