Have a single struct for queries and hook

compiler/rustc_codegen_gcc/src/lib.rs

@@ -80,9 +80,8 @@ use rustc_errors::{DiagnosticMessage, ErrorGuaranteed, Handler, SubdiagnosticMes
 use rustc_fluent_macro::fluent_messages;
 use rustc_metadata::EncodedMetadata;
 use rustc_middle::dep_graph::{WorkProduct, WorkProductId};
-use rustc_middle::query::Providers;
+use rustc_middle::util::Providers;
 use rustc_middle::ty::TyCtxt;
-use rustc_middle::hooks;
 use rustc_session::config::{Lto, OptLevel, OutputFilenames};
 use rustc_session::Session;
 use rustc_span::Symbol;
@@ -128,7 +127,7 @@ impl CodegenBackend for GccCodegenBackend {
         *self.supports_128bit_integers.lock().expect("lock") = check_context.get_last_error() == Ok(None);
     }
 
-    fn provide(&self, providers: &mut Providers, _: &mut hooks::Providers) {
+    fn provide(&self, providers: &mut Providers) {
         // FIXME(antoyo) compute list of enabled features from cli flags
         providers.global_backend_features = |_tcx, ()| vec![];
     }

compiler/rustc_codegen_llvm/src/lib.rs

@@ -39,9 +39,8 @@ use rustc_errors::{DiagnosticMessage, ErrorGuaranteed, FatalError, Handler, Subd
 use rustc_fluent_macro::fluent_messages;
 use rustc_metadata::EncodedMetadata;
 use rustc_middle::dep_graph::{WorkProduct, WorkProductId};
-use rustc_middle::hooks;
-use rustc_middle::query::Providers;
 use rustc_middle::ty::TyCtxt;
+use rustc_middle::util::Providers;
 use rustc_session::config::{OptLevel, OutputFilenames, PrintKind, PrintRequest};
 use rustc_session::Session;
 use rustc_span::symbol::Symbol;
@@ -269,7 +268,7 @@ impl CodegenBackend for LlvmCodegenBackend {
         llvm_util::init(sess); // Make sure llvm is inited
     }
 
-    fn provide(&self, providers: &mut Providers, _hooks: &mut hooks::Providers) {
+    fn provide(&self, providers: &mut Providers) {
         providers.global_backend_features =
             |tcx, ()| llvm_util::global_llvm_features(tcx.sess, true)
     }

compiler/rustc_codegen_ssa/src/traits/backend.rs

@@ -11,10 +11,10 @@ use rustc_data_structures::sync::{DynSend, DynSync};
 use rustc_errors::ErrorGuaranteed;
 use rustc_metadata::EncodedMetadata;
 use rustc_middle::dep_graph::{WorkProduct, WorkProductId};
-use rustc_middle::hooks;
-use rustc_middle::query::{ExternProviders, Providers};
+use rustc_middle::query::ExternProviders;
 use rustc_middle::ty::layout::{FnAbiOf, HasTyCtxt, LayoutOf, TyAndLayout};
 use rustc_middle::ty::{Ty, TyCtxt};
+use rustc_middle::util::Providers;
 use rustc_session::{
     config::{self, OutputFilenames, PrintRequest},
     cstore::MetadataLoaderDyn,
@@ -85,7 +85,7 @@ pub trait CodegenBackend {
         Box::new(crate::back::metadata::DefaultMetadataLoader)
     }
 
-    fn provide(&self, _providers: &mut Providers, _hooks: &mut hooks::Providers) {}
+    fn provide(&self, _providers: &mut Providers) {}
     fn provide_extern(&self, _providers: &mut ExternProviders) {}
     fn codegen_crate<'tcx>(
         &self,

compiler/rustc_const_eval/src/lib.rs

@@ -38,12 +38,11 @@ pub use errors::ReportErrorExt;
 
 use rustc_errors::{DiagnosticMessage, SubdiagnosticMessage};
 use rustc_fluent_macro::fluent_messages;
-use rustc_middle::query::Providers;
-use rustc_middle::{hooks, ty};
+use rustc_middle::{ty, util::Providers};
 
 fluent_messages! { "../messages.ftl" }
 
-pub fn provide(providers: &mut Providers, hooks: &mut hooks::Providers) {
+pub fn provide(providers: &mut Providers) {
     const_eval::provide(providers);
     providers.eval_to_const_value_raw = const_eval::eval_to_const_value_raw_provider;
     providers.eval_to_allocation_raw = const_eval::eval_to_allocation_raw_provider;
@@ -52,7 +51,7 @@ pub fn provide(providers: &mut Providers, hooks: &mut hooks::Providers) {
         let (param_env, raw) = param_env_and_value.into_parts();
         const_eval::eval_to_valtree(tcx, param_env, raw)
     };
-    hooks.try_destructure_mir_constant_for_diagnostics =
+    providers.hooks.try_destructure_mir_constant_for_diagnostics =
         const_eval::try_destructure_mir_constant_for_diagnostics;
     providers.valtree_to_const_val = |tcx, (ty, valtree)| {
         const_eval::valtree_to_const_value(tcx, ty::ParamEnv::empty().and(ty), valtree)

compiler/rustc_interface/src/interface.rs

@@ -9,7 +9,8 @@ use rustc_data_structures::sync::Lrc;
 use rustc_errors::registry::Registry;
 use rustc_errors::{ErrorGuaranteed, Handler};
 use rustc_lint::LintStore;
-use rustc_middle::query::{ExternProviders, Providers};
+use rustc_middle::query::ExternProviders;
+use rustc_middle::util::Providers;
 use rustc_middle::{bug, ty};
 use rustc_parse::maybe_new_parser_from_source_str;
 use rustc_query_impl::QueryCtxt;

compiler/rustc_interface/src/passes.rs

@@ -18,9 +18,9 @@ use rustc_lint::{unerased_lint_store, BufferedEarlyLint, EarlyCheckNode, LintSto
 use rustc_metadata::creader::CStore;
 use rustc_middle::arena::Arena;
 use rustc_middle::dep_graph::DepGraph;
-use rustc_middle::hooks;
-use rustc_middle::query::{ExternProviders, Providers};
+use rustc_middle::query::ExternProviders;
 use rustc_middle::ty::{self, GlobalCtxt, RegisteredTools, TyCtxt};
+use rustc_middle::util::Providers;
 use rustc_mir_build as mir_build;
 use rustc_parse::{parse_crate_from_file, parse_crate_from_source_str, validate_attr};
 use rustc_passes::{self, abi_test, hir_stats, layout_test};
@@ -646,16 +646,15 @@ fn output_filenames(tcx: TyCtxt<'_>, (): ()) -> Arc<OutputFilenames> {
     outputs.into()
 }
 
-pub static DEFAULT_QUERY_PROVIDERS: LazyLock<(Providers, hooks::Providers)> = LazyLock::new(|| {
+pub static DEFAULT_QUERY_PROVIDERS: LazyLock<Providers> = LazyLock::new(|| {
     let providers = &mut Providers::default();
-    let hooks = &mut hooks::Providers::default();
     providers.analysis = analysis;
     providers.hir_crate = rustc_ast_lowering::lower_to_hir;
     providers.output_filenames = output_filenames;
     providers.resolver_for_lowering = resolver_for_lowering;
     providers.early_lint_checks = early_lint_checks;
     proc_macro_decls::provide(providers);
-    rustc_const_eval::provide(providers, hooks);
+    rustc_const_eval::provide(providers);
     rustc_middle::hir::provide(providers);
     mir_borrowck::provide(providers);
     mir_build::provide(providers);
@@ -674,7 +673,7 @@ pub static DEFAULT_QUERY_PROVIDERS: LazyLock<(Providers, hooks::Providers)> = La
     rustc_lint::provide(providers);
     rustc_symbol_mangling::provide(providers);
     rustc_codegen_ssa::provide(providers);
-    (*providers, *hooks)
+    *providers
 });
 
 pub static DEFAULT_EXTERN_QUERY_PROVIDERS: LazyLock<ExternProviders> = LazyLock::new(|| {
@@ -704,14 +703,14 @@ pub fn create_global_ctxt<'tcx>(
     let query_result_on_disk_cache = rustc_incremental::load_query_result_cache(sess);
 
     let codegen_backend = compiler.codegen_backend();
-    let (mut local_providers, mut hooks) = *DEFAULT_QUERY_PROVIDERS;
-    codegen_backend.provide(&mut local_providers, &mut hooks);
+    let mut providers = *DEFAULT_QUERY_PROVIDERS;
+    codegen_backend.provide(&mut providers);
 
     let mut extern_providers = *DEFAULT_EXTERN_QUERY_PROVIDERS;
     codegen_backend.provide_extern(&mut extern_providers);
 
     if let Some(callback) = compiler.override_queries {
-        callback(sess, &mut local_providers, &mut extern_providers);
+        callback(sess, &mut providers, &mut extern_providers);
     }
 
     let incremental = dep_graph.is_fully_enabled();
@@ -729,12 +728,12 @@ pub fn create_global_ctxt<'tcx>(
                 dep_graph,
                 rustc_query_impl::query_callbacks(arena),
                 rustc_query_impl::query_system(
-                    local_providers,
+                    providers.queries,
                     extern_providers,
                     query_result_on_disk_cache,
                     incremental,
                 ),
-                hooks,
+                providers.hooks,
             )
         })
     })

compiler/rustc_middle/src/util/mod.rs

@@ -5,3 +5,26 @@ pub mod find_self_call;
 
 pub use call_kind::{call_kind, CallDesugaringKind, CallKind};
 pub use find_self_call::find_self_call;
+
+#[derive(Default, Copy, Clone)]
+pub struct Providers {
+    pub queries: rustc_middle::query::Providers,
+    pub hooks: rustc_middle::hooks::Providers,
+}
+
+/// Backwards compatibility hack to keep the diff small. This
+/// gives direct access to the `queries` field's fields, which
+/// are what almost everything wants access to.
+impl std::ops::DerefMut for Providers {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.queries
+    }
+}
+
+impl std::ops::Deref for Providers {
+    type Target = rustc_middle::query::Providers;
+
+    fn deref(&self) -> &Self::Target {
+        &self.queries
+    }
+}

src/librustdoc/core.rs

@@ -286,7 +286,7 @@ pub(crate) fn create_config(
                 let body = hir.body(hir.body_owned_by(def_id));
                 debug!("visiting body for {def_id:?}");
                 EmitIgnoredResolutionErrors::new(tcx).visit_body(body);
-                (rustc_interface::DEFAULT_QUERY_PROVIDERS.0.typeck)(tcx, def_id)
+                (rustc_interface::DEFAULT_QUERY_PROVIDERS.typeck)(tcx, def_id)
             };
         }),
         make_codegen_backend: None,