Auto merge of #116849 - oli-obk:error_shenanigans, r=cjgillot

Avoid a `track_errors` by bubbling up most errors from `check_well_formed`

I believe `track_errors` is mostly papering over issues that a sufficiently convoluted query graph can hit. I made this change, while the actual change I want to do is to stop bailing out early on errors, and instead use this new `ErrorGuaranteed` to invoke `check_well_formed` for individual items before doing all the `typeck` logic on them.

This works towards resolving https://github.com/rust-lang/rust/issues/97477 and various other ICEs, as well as allowing us to use parallel rustc more (which is currently rather limited/bottlenecked due to the very sequential nature in which we do `rustc_hir_analysis::check_crate`)

cc `@SparrowLii` `@Zoxc` for the new `try_par_for_each_in` function

1 files changed, 7 insertions, 3 deletions

diff --git a/compiler/rustc_middle/src/query/mod.rs b/compiler/rustc_middle/src/query/mod.rs
index cd5206a837f..23d77a1ebe4 100644
--- a/compiler/rustc_middle/src/query/mod.rs
+++ b/compiler/rustc_middle/src/query/mod.rs
@@ -25,7 +25,9 @@ use crate::mir::interpret::{
 use crate::mir::interpret::{LitToConstError, LitToConstInput};
 use crate::mir::mono::CodegenUnit;
 use crate::query::erase::{erase, restore, Erase};
-use crate::query::plumbing::{query_ensure, query_get_at, CyclePlaceholder, DynamicQuery};
+use crate::query::plumbing::{
+    query_ensure, query_ensure_error_guaranteed, query_get_at, CyclePlaceholder, DynamicQuery,
+};
 use crate::thir;
 use crate::traits::query::{
     CanonicalPredicateGoal, CanonicalProjectionGoal, CanonicalTyGoal,
@@ -965,8 +967,9 @@ rustc_queries! {
         desc { |tcx| "checking that impls are well-formed in {}", describe_as_module(key, tcx) }
     }
 
-    query check_mod_type_wf(key: LocalModDefId) -> () {
+    query check_mod_type_wf(key: LocalModDefId) -> Result<(), ErrorGuaranteed> {
         desc { |tcx| "checking that types are well-formed in {}", describe_as_module(key, tcx) }
+        ensure_forwards_result_if_red
     }
 
     query collect_mod_item_types(key: LocalModDefId) -> () {
@@ -1499,8 +1502,9 @@ rustc_queries! {
         feedable
     }
 
-    query check_well_formed(key: hir::OwnerId) -> () {
+    query check_well_formed(key: hir::OwnerId) -> Result<(), ErrorGuaranteed> {
         desc { |tcx| "checking that `{}` is well-formed", tcx.def_path_str(key) }
+        ensure_forwards_result_if_red
     }
 
     // The `DefId`s of all non-generic functions and statics in the given crate