From 211b05aef3d71fab0df7aa2f9616286a693a5cd7 Mon Sep 17 00:00:00 2001
From: Camille GILLOT <gillot.camille@gmail.com>
Date: Sun, 11 Oct 2020 10:34:50 +0200
Subject: Don't require a QueryContext to access the DepGraph.

---
 compiler/rustc_query_system/src/cache.rs              | 7 +++----
 compiler/rustc_query_system/src/dep_graph/dep_node.rs | 2 +-
 compiler/rustc_query_system/src/dep_graph/mod.rs      | 3 +++
 compiler/rustc_query_system/src/query/mod.rs          | 5 +----
 4 files changed, 8 insertions(+), 9 deletions(-)

(limited to 'compiler/rustc_query_system/src')

diff --git a/compiler/rustc_query_system/src/cache.rs b/compiler/rustc_query_system/src/cache.rs
index be3d3607728..c6dc7b4fe28 100644
--- a/compiler/rustc_query_system/src/cache.rs
+++ b/compiler/rustc_query_system/src/cache.rs
@@ -1,7 +1,6 @@
 //! Cache for candidate selection.
 
-use crate::dep_graph::DepNodeIndex;
-use crate::query::QueryContext;
+use crate::dep_graph::{DepContext, DepNodeIndex};
 
 use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::sync::HashMapExt;
@@ -28,7 +27,7 @@ impl<Key, Value> Cache<Key, Value> {
 }
 
 impl<Key: Eq + Hash, Value: Clone> Cache<Key, Value> {
-    pub fn get<CTX: QueryContext>(&self, key: &Key, tcx: CTX) -> Option<Value> {
+    pub fn get<CTX: DepContext>(&self, key: &Key, tcx: CTX) -> Option<Value> {
         Some(self.hashmap.borrow().get(key)?.get(tcx))
     }
 
@@ -55,7 +54,7 @@ impl<T: Clone> WithDepNode<T> {
         WithDepNode { dep_node, cached_value }
     }
 
-    pub fn get<CTX: QueryContext>(&self, tcx: CTX) -> T {
+    pub fn get<CTX: DepContext>(&self, tcx: CTX) -> T {
         tcx.dep_graph().read_index(self.dep_node);
         self.cached_value.clone()
     }
diff --git a/compiler/rustc_query_system/src/dep_graph/dep_node.rs b/compiler/rustc_query_system/src/dep_graph/dep_node.rs
index 64aba870502..1319a31b8f5 100644
--- a/compiler/rustc_query_system/src/dep_graph/dep_node.rs
+++ b/compiler/rustc_query_system/src/dep_graph/dep_node.rs
@@ -79,7 +79,7 @@ impl<K: DepKind> DepNode<K> {
 
     pub fn construct<Ctxt, Key>(tcx: Ctxt, kind: K, arg: &Key) -> DepNode<K>
     where
-        Ctxt: crate::query::QueryContext<DepKind = K>,
+        Ctxt: super::DepContext<DepKind = K>,
         Key: DepNodeParams<Ctxt>,
     {
         let hash = arg.to_fingerprint(tcx);
diff --git a/compiler/rustc_query_system/src/dep_graph/mod.rs b/compiler/rustc_query_system/src/dep_graph/mod.rs
index b1c901633a7..5c1444ad6c4 100644
--- a/compiler/rustc_query_system/src/dep_graph/mod.rs
+++ b/compiler/rustc_query_system/src/dep_graph/mod.rs
@@ -29,6 +29,9 @@ pub trait DepContext: Copy {
     fn debug_dep_tasks(&self) -> bool;
     fn debug_dep_node(&self) -> bool;
 
+    /// Access the DepGraph.
+    fn dep_graph(&self) -> &DepGraph<Self::DepKind>;
+
     /// Try to force a dep node to execute and see if it's green.
     fn try_force_from_dep_node(&self, dep_node: &DepNode<Self::DepKind>) -> bool;
 
diff --git a/compiler/rustc_query_system/src/query/mod.rs b/compiler/rustc_query_system/src/query/mod.rs
index da45565dbe6..84d4b406c84 100644
--- a/compiler/rustc_query_system/src/query/mod.rs
+++ b/compiler/rustc_query_system/src/query/mod.rs
@@ -14,7 +14,7 @@ pub use self::caches::{
 mod config;
 pub use self::config::{QueryAccessors, QueryConfig, QueryDescription};
 
-use crate::dep_graph::{DepContext, DepGraph};
+use crate::dep_graph::DepContext;
 use crate::query::job::QueryMap;
 
 use rustc_data_structures::stable_hasher::HashStable;
@@ -32,9 +32,6 @@ pub trait QueryContext: DepContext {
     /// Get string representation from DefPath.
     fn def_path_str(&self, def_id: DefId) -> String;
 
-    /// Access the DepGraph.
-    fn dep_graph(&self) -> &DepGraph<Self::DepKind>;
-
     /// Get the query information from the TLS context.
     fn current_query_job(&self) -> Option<QueryJobId<Self::DepKind>>;
 
-- 
cgit 1.4.1-3-g733a5