Remove DepContext.

It's no longer needed now that we can access `TyCtxt` directly.

Author: nnethercote

compiler/rustc_interface/src/callbacks.rs

@@ -13,7 +13,7 @@ use std::fmt;
 
 use rustc_errors::{DiagInner, TRACK_DIAGNOSTIC};
 use rustc_middle::dep_graph::dep_node::default_dep_kind_debug;
-use rustc_middle::dep_graph::{DepContext, DepKind, DepNode, TaskDepsRef};
+use rustc_middle::dep_graph::{DepKind, DepNode, TaskDepsRef};
 use rustc_middle::ty::tls;
 
 fn track_span_parent(def_id: rustc_span::def_id::LocalDefId) {

compiler/rustc_middle/src/dep_graph/dep_node.rs

@@ -67,7 +67,7 @@ use rustc_macros::{Decodable, Encodable};
 use rustc_query_system::ich::StableHashingContext;
 use rustc_span::Symbol;
 
-use super::{DepContext, FingerprintStyle, SerializedDepNodeIndex};
+use super::{FingerprintStyle, SerializedDepNodeIndex};
 use crate::mir::mono::MonoItem;
 use crate::ty::TyCtxt;
 
@@ -117,29 +117,25 @@ impl DepNode {
     /// Creates a new, parameterless DepNode. This method will assert
     /// that the DepNode corresponding to the given DepKind actually
     /// does not require any parameters.
-    pub fn new_no_params<Tcx>(tcx: Tcx, kind: DepKind) -> DepNode
-    where
-        Tcx: super::DepContext,
-    {
+    pub fn new_no_params<'tcx>(tcx: TyCtxt<'tcx>, kind: DepKind) -> DepNode {
         debug_assert_eq!(tcx.fingerprint_style(kind), FingerprintStyle::Unit);
         DepNode { kind, hash: Fingerprint::ZERO.into() }
     }
 
-    pub fn construct<Tcx, Key>(tcx: Tcx, kind: DepKind, arg: &Key) -> DepNode
+    pub fn construct<'tcx, Key>(tcx: TyCtxt<'tcx>, kind: DepKind, arg: &Key) -> DepNode
     where
-        Tcx: super::DepContext,
-        Key: DepNodeKey<Tcx>,
+        Key: DepNodeKey<'tcx>,
     {
         let hash = arg.to_fingerprint(tcx);
         let dep_node = DepNode { kind, hash: hash.into() };
 
         #[cfg(debug_assertions)]
         {
             if !tcx.fingerprint_style(kind).reconstructible()
-                && (tcx.sess().opts.unstable_opts.incremental_info
-                    || tcx.sess().opts.unstable_opts.query_dep_graph)
+                && (tcx.sess.opts.unstable_opts.incremental_info
+                    || tcx.sess.opts.unstable_opts.query_dep_graph)
             {
-                tcx.dep_graph().register_dep_node_debug_str(dep_node, || arg.to_debug_str(tcx));
+                tcx.dep_graph.register_dep_node_debug_str(dep_node, || arg.to_debug_str(tcx));
             }
         }
 
@@ -149,10 +145,11 @@ impl DepNode {
     /// Construct a DepNode from the given DepKind and DefPathHash. This
     /// method will assert that the given DepKind actually requires a
     /// single DefId/DefPathHash parameter.
-    pub fn from_def_path_hash<Tcx>(tcx: Tcx, def_path_hash: DefPathHash, kind: DepKind) -> Self
-    where
-        Tcx: super::DepContext,
-    {
+    pub fn from_def_path_hash<'tcx>(
+        tcx: TyCtxt<'tcx>,
+        def_path_hash: DefPathHash,
+        kind: DepKind,
+    ) -> Self {
         debug_assert!(tcx.fingerprint_style(kind) == FingerprintStyle::DefPathHash);
         DepNode { kind, hash: def_path_hash.0.into() }
     }
@@ -172,26 +169,26 @@ impl fmt::Debug for DepNode {
 }
 
 /// Trait for query keys as seen by dependency-node tracking.
-pub trait DepNodeKey<Tcx: DepContext>: fmt::Debug + Sized {
+pub trait DepNodeKey<'tcx>: fmt::Debug + Sized {
     fn fingerprint_style() -> FingerprintStyle;
 
     /// This method turns a query key into an opaque `Fingerprint` to be used
     /// in `DepNode`.
-    fn to_fingerprint(&self, _: Tcx) -> Fingerprint;
+    fn to_fingerprint(&self, tcx: TyCtxt<'tcx>) -> Fingerprint;
 
-    fn to_debug_str(&self, tcx: Tcx) -> String;
+    fn to_debug_str(&self, tcx: TyCtxt<'tcx>) -> String;
 
     /// This method tries to recover the query key from the given `DepNode`,
     /// something which is needed when forcing `DepNode`s during red-green
     /// evaluation. The query system will only call this method if
     /// `fingerprint_style()` is not `FingerprintStyle::Opaque`.
     /// It is always valid to return `None` here, in which case incremental
     /// compilation will treat the query as having changed instead of forcing it.
-    fn recover(tcx: Tcx, dep_node: &DepNode) -> Option<Self>;
+    fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self>;
 }
 
 // Blanket impl of `DepNodeKey`, which is specialized by other impls elsewhere.
-impl<Tcx: DepContext, T> DepNodeKey<Tcx> for T
+impl<'tcx, T> DepNodeKey<'tcx> for T
 where
     T: for<'a> HashStable<StableHashingContext<'a>> + fmt::Debug,
 {
@@ -201,7 +198,7 @@ where
     }
 
     #[inline(always)]
-    default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint {
+    default fn to_fingerprint(&self, tcx: TyCtxt<'tcx>) -> Fingerprint {
         tcx.with_stable_hashing_context(|mut hcx| {
             let mut hasher = StableHasher::new();
             self.hash_stable(&mut hcx, &mut hasher);
@@ -210,15 +207,15 @@ where
     }
 
     #[inline(always)]
-    default fn to_debug_str(&self, tcx: Tcx) -> String {
+    default fn to_debug_str(&self, tcx: TyCtxt<'tcx>) -> String {
         // Make sure to print dep node params with reduced queries since printing
         // may themselves call queries, which may lead to (possibly untracked!)
         // query cycles.
         tcx.with_reduced_queries(|| format!("{self:?}"))
     }
 
     #[inline(always)]
-    default fn recover(_: Tcx, _: &DepNode) -> Option<Self> {
+    default fn recover(_: TyCtxt<'tcx>, _: &DepNode) -> Option<Self> {
         None
     }
 }
@@ -228,7 +225,7 @@ where
 /// Information is retrieved by indexing the `DEP_KINDS` array using the integer value
 /// of the `DepKind`. Overall, this allows to implement `DepContext` using this manual
 /// jump table instead of large matches.
-pub struct DepKindVTable<Tcx: DepContext> {
+pub struct DepKindVTable<'tcx> {
     /// Anonymous queries cannot be replayed from one compiler invocation to the next.
     /// When their result is needed, it is recomputed. They are useful for fine-grained
     /// dependency tracking, and caching within one compiler invocation.
@@ -279,11 +276,12 @@ pub struct DepKindVTable<Tcx: DepContext> {
     /// with kind `MirValidated`, we know that the GUID/fingerprint of the `DepNode`
     /// is actually a `DefPathHash`, and can therefore just look up the corresponding
     /// `DefId` in `tcx.def_path_hash_to_def_id`.
-    pub force_from_dep_node:
-        Option<fn(tcx: Tcx, dep_node: DepNode, prev_index: SerializedDepNodeIndex) -> bool>,
+    pub force_from_dep_node: Option<
+        fn(tcx: TyCtxt<'tcx>, dep_node: DepNode, prev_index: SerializedDepNodeIndex) -> bool,
+    >,
 
     /// Invoke a query to put the on-disk cached value in memory.
-    pub try_load_from_on_disk_cache: Option<fn(Tcx, DepNode)>,
+    pub try_load_from_on_disk_cache: Option<fn(TyCtxt<'tcx>, DepNode)>,
 
     /// The name of this dep kind.
     pub name: &'static &'static str,

compiler/rustc_middle/src/dep_graph/dep_node_key.rs

@@ -3,10 +3,10 @@ use rustc_hir::def_id::{CrateNum, DefId, LOCAL_CRATE, LocalDefId, LocalModDefId,
 use rustc_hir::definitions::DefPathHash;
 use rustc_hir::{HirId, ItemLocalId, OwnerId};
 
-use crate::dep_graph::{DepContext, DepNode, DepNodeKey, FingerprintStyle};
+use crate::dep_graph::{DepNode, DepNodeKey, FingerprintStyle};
 use crate::ty::TyCtxt;
 
-impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for () {
+impl<'tcx> DepNodeKey<'tcx> for () {
     #[inline(always)]
     fn fingerprint_style() -> FingerprintStyle {
         FingerprintStyle::Unit
@@ -23,7 +23,7 @@ impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for () {
     }
 }
 
-impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for DefId {
+impl<'tcx> DepNodeKey<'tcx> for DefId {
     #[inline(always)]
     fn fingerprint_style() -> FingerprintStyle {
         FingerprintStyle::DefPathHash
@@ -45,7 +45,7 @@ impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for DefId {
     }
 }
 
-impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for LocalDefId {
+impl<'tcx> DepNodeKey<'tcx> for LocalDefId {
     #[inline(always)]
     fn fingerprint_style() -> FingerprintStyle {
         FingerprintStyle::DefPathHash
@@ -67,7 +67,7 @@ impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for LocalDefId {
     }
 }
 
-impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for OwnerId {
+impl<'tcx> DepNodeKey<'tcx> for OwnerId {
     #[inline(always)]
     fn fingerprint_style() -> FingerprintStyle {
         FingerprintStyle::DefPathHash
@@ -89,7 +89,7 @@ impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for OwnerId {
     }
 }
 
-impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for CrateNum {
+impl<'tcx> DepNodeKey<'tcx> for CrateNum {
     #[inline(always)]
     fn fingerprint_style() -> FingerprintStyle {
         FingerprintStyle::DefPathHash
@@ -112,7 +112,7 @@ impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for CrateNum {
     }
 }
 
-impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for (DefId, DefId) {
+impl<'tcx> DepNodeKey<'tcx> for (DefId, DefId) {
     #[inline(always)]
     fn fingerprint_style() -> FingerprintStyle {
         FingerprintStyle::Opaque
@@ -139,7 +139,7 @@ impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for (DefId, DefId) {
     }
 }
 
-impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for HirId {
+impl<'tcx> DepNodeKey<'tcx> for HirId {
     #[inline(always)]
     fn fingerprint_style() -> FingerprintStyle {
         FingerprintStyle::HirId
@@ -182,7 +182,7 @@ impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for HirId {
     }
 }
 
-impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for ModDefId {
+impl<'tcx> DepNodeKey<'tcx> for ModDefId {
     #[inline(always)]
     fn fingerprint_style() -> FingerprintStyle {
         FingerprintStyle::DefPathHash
@@ -204,7 +204,7 @@ impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for ModDefId {
     }
 }
 
-impl<'tcx> DepNodeKey<TyCtxt<'tcx>> for LocalModDefId {
+impl<'tcx> DepNodeKey<'tcx> for LocalModDefId {
     #[inline(always)]
     fn fingerprint_style() -> FingerprintStyle {
         FingerprintStyle::DefPathHash

compiler/rustc_middle/src/dep_graph/graph.rs

@@ -25,7 +25,7 @@ use {super::debug::EdgeFilter, std::env};
 
 use super::query::DepGraphQuery;
 use super::serialized::{GraphEncoder, SerializedDepGraph, SerializedDepNodeIndex};
-use super::{DepContext, DepKind, DepNode, DepsType, HasDepContext, WorkProductId};
+use super::{DepKind, DepNode, DepsType, HasDepContext, WorkProductId};
 use crate::dep_graph::edges::EdgesVec;
 use crate::ty::TyCtxt;
 use crate::verify_ich::incremental_verify_ich;
@@ -62,7 +62,7 @@ impl From<DepNodeIndex> for QueryInvocationId {
     }
 }
 
-pub struct MarkFrame<'a> {
+pub(crate) struct MarkFrame<'a> {
     index: SerializedDepNodeIndex,
     parent: Option<&'a MarkFrame<'a>>,
 }
@@ -252,7 +252,7 @@ impl DepGraph {
     }
 
     #[inline(always)]
-    pub fn with_task<Ctxt: HasDepContext, A: Debug, R>(
+    pub fn with_task<'tcx, Ctxt: HasDepContext<'tcx>, A: Debug, R>(
         &self,
         key: DepNode,
         cx: Ctxt,
@@ -266,9 +266,9 @@ impl DepGraph {
         }
     }
 
-    pub fn with_anon_task<Tcx: DepContext, OP, R>(
+    pub fn with_anon_task<'tcx, OP, R>(
         &self,
-        cx: Tcx,
+        cx: TyCtxt<'tcx>,
         dep_kind: DepKind,
         op: OP,
     ) -> (R, DepNodeIndex)
@@ -315,7 +315,7 @@ impl DepGraphData {
     ///
     /// [rustc dev guide]: https://rustc-dev-guide.rust-lang.org/queries/incremental-compilation.html
     #[inline(always)]
-    pub fn with_task<Ctxt: HasDepContext, A: Debug, R>(
+    pub fn with_task<'tcx, Ctxt: HasDepContext<'tcx>, A: Debug, R>(
         &self,
         key: DepNode,
         cx: Ctxt,
@@ -329,7 +329,7 @@ impl DepGraphData {
         // 2. Two distinct query keys get mapped to the same `DepNode`
         //    (see for example #48923).
         self.assert_dep_node_not_yet_allocated_in_current_session(
-            cx.dep_context().sess(),
+            cx.dep_context().sess,
             &key,
             || {
                 format!(
@@ -352,8 +352,8 @@ impl DepGraphData {
             (with_deps(TaskDepsRef::Allow(&task_deps)), task_deps.into_inner().reads)
         };
 
-        let dcx = cx.dep_context();
-        let dep_node_index = self.hash_result_and_alloc_node(dcx, key, edges, &result, hash_result);
+        let dep_node_index =
+            self.hash_result_and_alloc_node(cx.dep_context(), key, edges, &result, hash_result);
 
         (result, dep_node_index)
     }
@@ -369,9 +369,9 @@ impl DepGraphData {
     /// FIXME: This could perhaps return a `WithDepNode` to ensure that the
     /// user of this function actually performs the read; we'll have to see
     /// how to make that work with `anon` in `execute_job_incr`, though.
-    pub fn with_anon_task_inner<Tcx: DepContext, OP, R>(
+    pub fn with_anon_task_inner<'tcx, OP, R>(
         &self,
-        cx: Tcx,
+        cx: TyCtxt<'tcx>,
         dep_kind: DepKind,
         op: OP,
     ) -> (R, DepNodeIndex)
@@ -438,17 +438,17 @@ impl DepGraphData {
     }
 
     /// Intern the new `DepNode` with the dependencies up-to-now.
-    fn hash_result_and_alloc_node<Ctxt: DepContext, R>(
+    fn hash_result_and_alloc_node<'tcx, R>(
         &self,
-        cx: &Ctxt,
+        tcx: TyCtxt<'tcx>,
         node: DepNode,
         edges: EdgesVec,
         result: &R,
         hash_result: Option<fn(&mut StableHashingContext<'_>, &R) -> Fingerprint>,
     ) -> DepNodeIndex {
-        let hashing_timer = cx.profiler().incr_result_hashing();
+        let hashing_timer = tcx.prof.incr_result_hashing();
         let current_fingerprint = hash_result.map(|hash_result| {
-            cx.with_stable_hashing_context(|mut hcx| hash_result(&mut hcx, result))
+            tcx.with_stable_hashing_context(|mut hcx| hash_result(&mut hcx, result))
         });
         let dep_node_index = self.alloc_and_color_node(node, edges, current_fingerprint);
         hashing_timer.finish_with_query_invocation_id(dep_node_index.into());
@@ -553,10 +553,10 @@ impl DepGraph {
     /// FIXME: If the code is changed enough for this node to be marked before requiring the
     /// caller's node, we suppose that those changes will be enough to mark this node red and
     /// force a recomputation using the "normal" way.
-    pub fn with_feed_task<Ctxt: DepContext, R>(
+    pub fn with_feed_task<'tcx, R>(
         &self,
         node: DepNode,
-        cx: Ctxt,
+        tcx: TyCtxt<'tcx>,
         result: &R,
         hash_result: Option<fn(&mut StableHashingContext<'_>, &R) -> Fingerprint>,
         format_value_fn: fn(&R) -> String,
@@ -572,7 +572,7 @@ impl DepGraph {
                 let dep_node_index = data.colors.current(prev_index);
                 if let Some(dep_node_index) = dep_node_index {
                     incremental_verify_ich(
-                        cx,
+                        tcx,
                         data,
                         result,
                         prev_index,
@@ -605,7 +605,7 @@ impl DepGraph {
                 }
             });
 
-            data.hash_result_and_alloc_node(&cx, node, edges, result, hash_result)
+            data.hash_result_and_alloc_node(tcx, node, edges, result, hash_result)
         } else {
             // Incremental compilation is turned off. We just execute the task
             // without tracking. We still provide a dep-node index that uniquely
@@ -1051,8 +1051,8 @@ impl DepGraph {
     ///
     /// This method will only load queries that will end up in the disk cache.
     /// Other queries will not be executed.
-    pub fn exec_cache_promotions<Tcx: DepContext>(&self, tcx: Tcx) {
-        let _prof_timer = tcx.profiler().generic_activity("incr_comp_query_cache_promotion");
+    pub fn exec_cache_promotions<'tcx>(&self, tcx: TyCtxt<'tcx>) {
+        let _prof_timer = tcx.prof.generic_activity("incr_comp_query_cache_promotion");
 
         let data = self.data.as_ref().unwrap();
         for prev_index in data.colors.values.indices() {