Rollup of 14 pull requests

.github/workflows/ci.yml

@@ -431,15 +431,15 @@ jobs:
           - name: x86_64-mingw-1
             env:
               SCRIPT: make ci-mingw-subset-1
-              RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-gnu"
+              RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-gnu --enable-profiler"
               CUSTOM_MINGW: 1
               NO_DEBUG_ASSERTIONS: 1
               NO_LLVM_ASSERTIONS: 1
             os: windows-latest-xl
           - name: x86_64-mingw-2
             env:
               SCRIPT: make ci-mingw-subset-2
-              RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-gnu"
+              RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-gnu --enable-profiler"
               CUSTOM_MINGW: 1
             os: windows-latest-xl
           - name: dist-x86_64-msvc

Cargo.lock

@@ -427,9 +427,9 @@ dependencies = [
 
 [[package]]
 name = "chalk-derive"
-version = "0.14.0"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d463e01905d607e181de72e8608721d3269f29176c9a14ce037011316ae7131d"
+checksum = "c1df0dbb57d74b4acd20f20fa66ab2acd09776b79eaeb9d8f947b2f3e01c40bf"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -439,40 +439,42 @@ dependencies = [
 
 [[package]]
 name = "chalk-engine"
-version = "0.14.0"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "efaf428f5398d36284f79690cf988762b7c091249f50a6c11db613a46c057000"
+checksum = "fb7c65a13f32f02aba8f1d9a37f206af615f77ac564624b81a4c593c6c1735b9"
 dependencies = [
  "chalk-derive",
  "chalk-ir",
+ "chalk-solve",
  "rustc-hash",
  "tracing",
 ]
 
 [[package]]
 name = "chalk-ir"
-version = "0.14.0"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd3fdc1e9f68498ffe80f4a23b0b95f1ca6fb21d5a4c9b0c085fab3ca712bdbe"
+checksum = "44361a25dbdb1dc428f56ad7a3c21ba9ca12f3225c26a47919ff6fcb10a583d4"
 dependencies = [
  "chalk-derive",
  "lazy_static",
 ]
 
 [[package]]
 name = "chalk-solve"
-version = "0.14.0"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b9fd4102807b7ebe8fb034fa0f488c5656e1966d3261b558b81a08d519cdb29"
+checksum = "a886da37a0dc457057d86f78f026f7a09c6d8088aa13f4f4127fdb8dc80119a3"
 dependencies = [
  "chalk-derive",
- "chalk-engine",
  "chalk-ir",
  "ena",
  "itertools 0.9.0",
  "petgraph",
  "rustc-hash",
  "tracing",
+ "tracing-subscriber",
+ "tracing-tree",
 ]
 
 [[package]]
@@ -4038,6 +4040,7 @@ dependencies = [
 name = "rustc_traits"
 version = "0.0.0"
 dependencies = [
+ "chalk-engine",
  "chalk-ir",
  "chalk-solve",
  "rustc_ast",
@@ -4996,21 +4999,61 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "tracing-log"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e0f8c7178e13481ff6765bd169b33e8d554c5d2bbede5e32c356194be02b9b9"
+dependencies = [
+ "lazy_static",
+ "log",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-serde"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6ccba2f8f16e0ed268fc765d9b7ff22e965e7185d32f8f1ec8294fe17d86e79"
+dependencies = [
+ "serde",
+ "tracing-core",
+]
+
 [[package]]
 name = "tracing-subscriber"
 version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "abd165311cc4d7a555ad11cc77a37756df836182db0d81aac908c8184c584f40"
 dependencies = [
  "ansi_term 0.12.1",
+ "chrono",
  "lazy_static",
  "matchers",
  "parking_lot 0.11.0",
  "regex",
+ "serde",
+ "serde_json",
  "sharded-slab",
  "smallvec 1.4.2",
  "thread_local",
  "tracing-core",
+ "tracing-log",
+ "tracing-serde",
+]
+
+[[package]]
+name = "tracing-tree"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1a3dc4774db3a6b2d66a4f8d8de670e874ec3ed55615860c994927419b32c5f"
+dependencies = [
+ "ansi_term 0.12.1",
+ "atty",
+ "chrono",
+ "termcolor",
+ "tracing",
+ "tracing-subscriber",
 ]
 
 [[package]]

README.md

@@ -243,6 +243,8 @@ The Rust community congregates in a few places:
 If you are interested in contributing to the Rust project, please take a look
 at the [Getting Started][gettingstarted] guide in the [rustc-dev-guide].
 
+[rustc-dev-guide]: https://rustc-dev-guide.rust-lang.org
+
 ## License
 
 Rust is primarily distributed under the terms of both the MIT license

compiler/rustc_middle/Cargo.toml

@@ -27,7 +27,7 @@ rustc_serialize = { path = "../rustc_serialize" }
 rustc_ast = { path = "../rustc_ast" }
 rustc_span = { path = "../rustc_span" }
 byteorder = { version = "1.3" }
-chalk-ir = "0.14.0"
+chalk-ir = "0.21.0"
 smallvec = { version = "1.0", features = ["union", "may_dangle"] }
 measureme = "0.7.1"
 rustc_session = { path = "../rustc_session" }

compiler/rustc_middle/src/traits/chalk.rs

@@ -75,6 +75,7 @@ impl<'tcx> chalk_ir::interner::Interner for RustInterner<'tcx> {
     type InternedQuantifiedWhereClauses = Vec<chalk_ir::QuantifiedWhereClause<Self>>;
     type InternedVariableKinds = Vec<chalk_ir::VariableKind<Self>>;
     type InternedCanonicalVarKinds = Vec<chalk_ir::CanonicalVarKind<Self>>;
+    type InternedConstraints = Vec<chalk_ir::InEnvironment<chalk_ir::Constraint<Self>>>;
     type DefId = DefId;
     type InternedAdtId = &'tcx AdtDef;
     type Identifier = ();
@@ -108,8 +109,42 @@ impl<'tcx> chalk_ir::interner::Interner for RustInterner<'tcx> {
         application_ty: &chalk_ir::ApplicationTy<Self>,
         fmt: &mut fmt::Formatter<'_>,
     ) -> Option<fmt::Result> {
-        let chalk_ir::ApplicationTy { name, substitution } = application_ty;
-        Some(write!(fmt, "{:?}{:?}", name, chalk_ir::debug::Angle(substitution.interned())))
+        match application_ty.name {
+            chalk_ir::TypeName::Ref(mutbl) => {
+                let data = application_ty.substitution.interned();
+                match (&**data[0].interned(), &**data[1].interned()) {
+                    (
+                        chalk_ir::GenericArgData::Lifetime(lifetime),
+                        chalk_ir::GenericArgData::Ty(ty),
+                    ) => Some(match mutbl {
+                        chalk_ir::Mutability::Not => write!(fmt, "(&{:?} {:?})", lifetime, ty),
+                        chalk_ir::Mutability::Mut => write!(fmt, "(&{:?} mut {:?})", lifetime, ty),
+                    }),
+                    _ => unreachable!(),
+                }
+            }
+            chalk_ir::TypeName::Array => {
+                let data = application_ty.substitution.interned();
+                match (&**data[0].interned(), &**data[1].interned()) {
+                    (chalk_ir::GenericArgData::Ty(ty), chalk_ir::GenericArgData::Const(len)) => {
+                        Some(write!(fmt, "[{:?}; {:?}]", ty, len))
+                    }
+                    _ => unreachable!(),
+                }
+            }
+            chalk_ir::TypeName::Slice => {
+                let data = application_ty.substitution.interned();
+                let ty = match &**data[0].interned() {
+                    chalk_ir::GenericArgData::Ty(t) => t,
+                    _ => unreachable!(),
+                };
+                Some(write!(fmt, "[{:?}]", ty))
+            }
+            _ => {
+                let chalk_ir::ApplicationTy { name, substitution } = application_ty;
+                Some(write!(fmt, "{:?}{:?}", name, chalk_ir::debug::Angle(substitution.interned())))
+            }
+        }
     }
 
     fn debug_substitution(
@@ -321,6 +356,20 @@ impl<'tcx> chalk_ir::interner::Interner for RustInterner<'tcx> {
     ) -> &'a [chalk_ir::CanonicalVarKind<Self>] {
         canonical_var_kinds
     }
+
+    fn intern_constraints<E>(
+        &self,
+        data: impl IntoIterator<Item = Result<chalk_ir::InEnvironment<chalk_ir::Constraint<Self>>, E>>,
+    ) -> Result<Self::InternedConstraints, E> {
+        data.into_iter().collect::<Result<Vec<_>, _>>()
+    }
+
+    fn constraints_data<'a>(
+        &self,
+        constraints: &'a Self::InternedConstraints,
+    ) -> &'a [chalk_ir::InEnvironment<chalk_ir::Constraint<Self>>] {
+        constraints
+    }
 }
 
 impl<'tcx> chalk_ir::interner::HasInterner for RustInterner<'tcx> {

compiler/rustc_passes/src/check_attr.rs

@@ -250,13 +250,23 @@ impl CheckAttrVisitor<'tcx> {
                                     None
                                 }
                             }
+                            Target::AssocConst => {
+                                let parent_hir_id = self.tcx.hir().get_parent_item(hir_id);
+                                let containing_item = self.tcx.hir().expect_item(parent_hir_id);
+                                // We can't link to trait impl's consts.
+                                let err = "associated constant in trait implementation block";
+                                match containing_item.kind {
+                                    ItemKind::Impl { of_trait: Some(_), .. } => Some(err),
+                                    _ => None,
+                                }
+                            }
                             _ => None,
                         } {
                             self.tcx
                                 .sess
                                 .struct_span_err(
                                     meta.span(),
-                                    &format!("`#[doc(alias = \"...\")]` isn't allowed on {}", err,),
+                                    &format!("`#[doc(alias = \"...\")]` isn't allowed on {}", err),
                                 )
                                 .emit();
                         }

compiler/rustc_traits/Cargo.toml

@@ -12,8 +12,9 @@ rustc_hir = { path = "../rustc_hir" }
 rustc_index = { path = "../rustc_index" }
 rustc_ast = { path = "../rustc_ast" }
 rustc_span = { path = "../rustc_span" }
-chalk-ir = "0.14.0"
-chalk-solve = "0.14.0"
+chalk-ir = "0.21.0"
+chalk-solve = "0.21.0"
+chalk-engine = "0.21.0"
 smallvec = { version = "1.0", features = ["union", "may_dangle"] }
 rustc_infer = { path = "../rustc_infer" }
 rustc_trait_selection = { path = "../rustc_trait_selection" }