Rollup merge of #70373 - Centril:canon-imports, r=Mark-Simulacrum

normalize some imports & prefer direct ones

r? @Mark-Simulacrum

src/librustc/dep_graph/dep_node.rs

@@ -49,8 +49,6 @@
 //! user of the `DepNode` API of having to know how to compute the expected
 //! fingerprint for a given set of node parameters.
 
-use crate::hir::map::DefPathHash;
-use crate::ich::Fingerprint;
 use crate::mir;
 use crate::mir::interpret::{GlobalId, LitToConstInput};
 use crate::traits;
@@ -62,7 +60,9 @@ use crate::traits::query::{
 use crate::ty::subst::SubstsRef;
 use crate::ty::{self, ParamEnvAnd, Ty, TyCtxt};
 
+use rustc_data_structures::fingerprint::Fingerprint;
 use rustc_hir::def_id::{CrateNum, DefId, LocalDefId, CRATE_DEF_INDEX};
+use rustc_hir::definitions::DefPathHash;
 use rustc_hir::HirId;
 use rustc_span::symbol::Symbol;
 use std::hash::Hash;

src/librustc/hir/map/collector.rs

@@ -1,5 +1,4 @@
 use crate::arena::Arena;
-use crate::hir::map::definitions::{self, DefPathHash};
 use crate::hir::map::{Entry, HirOwnerData, Map};
 use crate::hir::{Owner, OwnerNodes, ParentedNode};
 use crate::ich::StableHashingContext;
@@ -11,6 +10,7 @@ use rustc_data_structures::svh::Svh;
 use rustc_hir as hir;
 use rustc_hir::def_id::CRATE_DEF_INDEX;
 use rustc_hir::def_id::{LocalDefId, LOCAL_CRATE};
+use rustc_hir::definitions::{self, DefPathHash};
 use rustc_hir::intravisit::{self, NestedVisitorMap, Visitor};
 use rustc_hir::*;
 use rustc_index::vec::{Idx, IndexVec};

src/librustc/hir/map/mod.rs

@@ -7,9 +7,7 @@ use rustc_ast::ast::{self, Name, NodeId};
 use rustc_data_structures::svh::Svh;
 use rustc_hir::def::{DefKind, Res};
 use rustc_hir::def_id::{CrateNum, DefId, LocalDefId, LOCAL_CRATE};
-pub use rustc_hir::definitions;
-pub use rustc_hir::definitions::{DefKey, DefPath, DefPathData, DefPathHash};
-pub use rustc_hir::definitions::{Definitions, DisambiguatedDefPathData};
+use rustc_hir::definitions::{DefKey, DefPath, Definitions};
 use rustc_hir::intravisit;
 use rustc_hir::itemlikevisit::ItemLikeVisitor;
 use rustc_hir::print::Nested;

src/librustc/ich/hcx.rs

@@ -1,5 +1,4 @@
-use crate::hir::map::definitions::{DefPathHash, Definitions};
-use crate::ich::{self, CachingSourceMapView};
+use crate::ich;
 use crate::middle::cstore::CrateStore;
 use crate::ty::{fast_reject, TyCtxt};
 
@@ -9,10 +8,11 @@ use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 use rustc_data_structures::sync::Lrc;
 use rustc_hir as hir;
 use rustc_hir::def_id::{DefId, LocalDefId};
+use rustc_hir::definitions::{DefPathHash, Definitions};
 use rustc_session::Session;
 use rustc_span::source_map::SourceMap;
 use rustc_span::symbol::Symbol;
-use rustc_span::{BytePos, SourceFile};
+use rustc_span::{BytePos, CachingSourceMapView, SourceFile};
 
 use smallvec::SmallVec;
 use std::cmp::Ord;

src/librustc/ich/impls_hir.rs

@@ -1,12 +1,13 @@
 //! This module contains `HashStable` implementations for various HIR data
 //! types in no particular order.
 
-use crate::hir::map::DefPathHash;
-use crate::ich::{Fingerprint, NodeIdHashingMode, StableHashingContext};
+use crate::ich::{NodeIdHashingMode, StableHashingContext};
 use rustc_attr as attr;
+use rustc_data_structures::fingerprint::Fingerprint;
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher, ToStableHashKey};
 use rustc_hir as hir;
 use rustc_hir::def_id::{CrateNum, DefId, LocalDefId, CRATE_DEF_INDEX};
+use rustc_hir::definitions::DefPathHash;
 use smallvec::SmallVec;
 use std::mem;
 

src/librustc/ich/impls_ty.rs

@@ -1,10 +1,11 @@
 //! This module contains `HashStable` implementations for various data types
 //! from rustc::ty in no particular order.
 
-use crate::ich::{Fingerprint, NodeIdHashingMode, StableHashingContext};
+use crate::ich::{NodeIdHashingMode, StableHashingContext};
 use crate::middle::region;
 use crate::mir;
 use crate::ty;
+use rustc_data_structures::fingerprint::Fingerprint;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher, ToStableHashKey};
 use std::cell::RefCell;

src/librustc/ich/mod.rs

@@ -3,7 +3,6 @@
 pub use self::hcx::{
     hash_stable_trait_impls, NodeIdHashingMode, StableHashingContext, StableHashingContextProvider,
 };
-crate use rustc_data_structures::fingerprint::Fingerprint;
 use rustc_span::symbol::{sym, Symbol};
 pub use rustc_span::CachingSourceMapView;
 

src/librustc/middle/cstore.rs

@@ -4,7 +4,6 @@
 
 pub use self::NativeLibraryKind::*;
 
-use crate::hir::map::definitions::{DefKey, DefPath, DefPathHash, DefPathTable};
 use crate::ty::TyCtxt;
 
 use rustc_ast::ast;
@@ -12,6 +11,7 @@ use rustc_ast::expand::allocator::AllocatorKind;
 use rustc_data_structures::svh::Svh;
 use rustc_data_structures::sync::{self, MetadataRef};
 use rustc_hir::def_id::{CrateNum, DefId, LOCAL_CRATE};
+use rustc_hir::definitions::{DefKey, DefPath, DefPathHash, DefPathTable};
 use rustc_macros::HashStable;
 use rustc_session::search_paths::PathKind;
 pub use rustc_session::utils::NativeLibraryKind;

src/librustc/mir/interpret/error.rs

@@ -1,6 +1,5 @@
 use super::{AllocId, CheckInAllocMsg, Pointer, RawConst, ScalarMaybeUndef};
 
-use crate::hir::map::definitions::DefPathData;
 use crate::mir::interpret::ConstValue;
 use crate::ty::layout::{Align, LayoutError, Size};
 use crate::ty::query::TyCtxtAt;
@@ -11,6 +10,7 @@ use backtrace::Backtrace;
 use rustc_data_structures::sync::Lock;
 use rustc_errors::{struct_span_err, DiagnosticBuilder};
 use rustc_hir as hir;
+use rustc_hir::definitions::DefPathData;
 use rustc_macros::HashStable;
 use rustc_session::CtfeBacktrace;
 use rustc_span::{def_id::DefId, Pos, Span};

src/librustc/mir/mono.rs

@@ -1,9 +1,10 @@
 use crate::dep_graph::{DepConstructor, DepNode, WorkProduct, WorkProductId};
-use crate::ich::{Fingerprint, NodeIdHashingMode, StableHashingContext};
+use crate::ich::{NodeIdHashingMode, StableHashingContext};
 use crate::ty::print::obsolete::DefPathBasedNames;
 use crate::ty::{subst::InternalSubsts, Instance, InstanceDef, SymbolName, TyCtxt};
 use rustc_attr::InlineAttr;
 use rustc_data_structures::base_n;
+use rustc_data_structures::fingerprint::Fingerprint;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 use rustc_hir::def_id::{CrateNum, DefId, LOCAL_CRATE};

src/librustc/ty/context.rs

@@ -4,9 +4,6 @@ use crate::arena::Arena;
 use crate::dep_graph::DepGraph;
 use crate::dep_graph::{self, DepConstructor};
 use crate::hir::exports::Export;
-use crate::hir::map as hir_map;
-use crate::hir::map::definitions::Definitions;
-use crate::hir::map::{DefPathData, DefPathHash};
 use crate::ich::{NodeIdHashingMode, StableHashingContext};
 use crate::infer::canonical::{Canonical, CanonicalVarInfo, CanonicalVarInfos};
 use crate::lint::{struct_lint_level, LintSource};
@@ -56,6 +53,7 @@ use rustc_data_structures::sync::{self, Lock, Lrc, WorkerLocal};
 use rustc_hir as hir;
 use rustc_hir::def::{DefKind, Res};
 use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, DefIdSet, LocalDefId, LOCAL_CRATE};
+use rustc_hir::definitions::{DefPathData, DefPathHash, Definitions};
 use rustc_hir::{HirId, Node, TraitCandidate};
 use rustc_hir::{ItemKind, ItemLocalId, ItemLocalMap, ItemLocalSet};
 use rustc_index::vec::{Idx, IndexVec};
@@ -1236,7 +1234,7 @@ impl<'tcx> TyCtxt<'tcx> {
         self.features_query(LOCAL_CRATE)
     }
 
-    pub fn def_key(self, id: DefId) -> hir_map::DefKey {
+    pub fn def_key(self, id: DefId) -> rustc_hir::definitions::DefKey {
         if let Some(id) = id.as_local() { self.hir().def_key(id) } else { self.cstore.def_key(id) }
     }
 
@@ -1245,7 +1243,7 @@ impl<'tcx> TyCtxt<'tcx> {
     ///
     /// Note that if `id` is not local to this crate, the result will
     ///  be a non-local `DefPath`.
-    pub fn def_path(self, id: DefId) -> hir_map::DefPath {
+    pub fn def_path(self, id: DefId) -> rustc_hir::definitions::DefPath {
         if let Some(id) = id.as_local() {
             self.hir().def_path(id)
         } else {
@@ -1260,7 +1258,7 @@ impl<'tcx> TyCtxt<'tcx> {
     }
 
     #[inline]
-    pub fn def_path_hash(self, def_id: DefId) -> hir_map::DefPathHash {
+    pub fn def_path_hash(self, def_id: DefId) -> rustc_hir::definitions::DefPathHash {
         if let Some(def_id) = def_id.as_local() {
             self.definitions.def_path_hash(def_id)
         } else {

src/librustc/ty/instance.rs

@@ -166,7 +166,7 @@ impl<'tcx> InstanceDef<'tcx> {
     /// Note that this is only a hint. See the documentation for
     /// `generates_cgu_internal_copy` for more information.
     pub fn requires_inline(&self, tcx: TyCtxt<'tcx>) -> bool {
-        use crate::hir::map::DefPathData;
+        use rustc_hir::definitions::DefPathData;
         let def_id = match *self {
             ty::InstanceDef::Item(def_id) => def_id,
             ty::InstanceDef::DropGlue(_, Some(_)) => return false,

src/librustc/ty/mod.rs

@@ -8,8 +8,6 @@ pub use self::Variance::*;
 
 use crate::arena::Arena;
 use crate::hir::exports::ExportMap;
-use crate::hir::map as hir_map;
-use crate::ich::Fingerprint;
 use crate::ich::StableHashingContext;
 use crate::infer::canonical::Canonical;
 use crate::middle::cstore::CrateStoreDyn;
@@ -28,6 +26,7 @@ use rustc_ast::ast::{self, Ident, Name};
 use rustc_ast::node_id::{NodeId, NodeMap, NodeSet};
 use rustc_attr as attr;
 use rustc_data_structures::captures::Captures;
+use rustc_data_structures::fingerprint::Fingerprint;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::fx::FxIndexMap;
 use rustc_data_structures::sorted_map::SortedIndexMultiMap;
@@ -124,7 +123,7 @@ mod sty;
 // Data types
 
 pub struct ResolverOutputs {
-    pub definitions: hir_map::Definitions,
+    pub definitions: rustc_hir::definitions::Definitions,
     pub cstore: Box<CrateStoreDyn>,
     pub extern_crate_map: NodeMap<CrateNum>,
     pub trait_map: TraitMap<NodeId>,
@@ -2986,7 +2985,7 @@ impl<'tcx> TyCtxt<'tcx> {
             let def_key = self.def_key(id);
             match def_key.disambiguated_data.data {
                 // The name of a constructor is that of its parent.
-                hir_map::DefPathData::Ctor => {
+                rustc_hir::definitions::DefPathData::Ctor => {
                     self.item_name(DefId { krate: id.krate, index: def_key.parent.unwrap() })
                 }
                 _ => def_key.disambiguated_data.data.get_opt_name().unwrap_or_else(|| {

src/librustc/ty/print/mod.rs

@@ -1,9 +1,9 @@
-use crate::hir::map::{DefPathData, DisambiguatedDefPathData};
 use crate::ty::subst::{GenericArg, Subst};
 use crate::ty::{self, DefIdTree, Ty, TyCtxt};
 
 use rustc_data_structures::fx::FxHashSet;
 use rustc_hir::def_id::{CrateNum, DefId};
+use rustc_hir::definitions::{DefPathData, DisambiguatedDefPathData};
 
 // `pretty` is a separate module only for organization.
 mod pretty;

src/librustc/ty/print/pretty.rs

@@ -1,18 +1,17 @@
-use crate::hir::map::{DefPathData, DisambiguatedDefPathData};
 use crate::middle::cstore::{ExternCrate, ExternCrateSource};
 use crate::middle::region;
 use crate::mir::interpret::{sign_extend, truncate, AllocId, ConstValue, Pointer, Scalar};
 use crate::ty::layout::{Integer, IntegerExt, Size};
 use crate::ty::subst::{GenericArg, GenericArgKind, Subst};
 use crate::ty::{self, DefIdTree, ParamConst, Ty, TyCtxt, TypeFoldable};
-use rustc_hir as hir;
-use rustc_hir::def::{DefKind, Namespace};
-use rustc_hir::def_id::{CrateNum, DefId, CRATE_DEF_INDEX, LOCAL_CRATE};
-
 use rustc_apfloat::ieee::{Double, Single};
 use rustc_apfloat::Float;
 use rustc_ast::ast;
 use rustc_attr::{SignedInt, UnsignedInt};
+use rustc_hir as hir;
+use rustc_hir::def::{DefKind, Namespace};
+use rustc_hir::def_id::{CrateNum, DefId, CRATE_DEF_INDEX, LOCAL_CRATE};
+use rustc_hir::definitions::{DefPathData, DisambiguatedDefPathData};
 use rustc_span::symbol::{kw, Symbol};
 use rustc_target::spec::abi::Abi;
 

src/librustc/ty/query/on_disk_cache.rs

@@ -1,17 +1,17 @@
 use crate::dep_graph::{DepNodeIndex, SerializedDepNodeIndex};
-use crate::hir::map::definitions::DefPathHash;
-use crate::ich::{CachingSourceMapView, Fingerprint};
 use crate::mir::interpret::{AllocDecodingSession, AllocDecodingState};
 use crate::mir::{self, interpret};
 use crate::ty::codec::{self as ty_codec, TyDecoder, TyEncoder};
 use crate::ty::context::TyCtxt;
 use crate::ty::{self, Ty};
 use rustc_ast::ast::Ident;
+use rustc_data_structures::fingerprint::Fingerprint;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::sync::{HashMapExt, Lock, Lrc, Once};
 use rustc_data_structures::thin_vec::ThinVec;
 use rustc_errors::Diagnostic;
 use rustc_hir::def_id::{CrateNum, DefId, DefIndex, LocalDefId, LOCAL_CRATE};
+use rustc_hir::definitions::DefPathHash;
 use rustc_index::vec::{Idx, IndexVec};
 use rustc_serialize::{
     opaque, Decodable, Decoder, Encodable, Encoder, SpecializedDecoder, SpecializedEncoder,
@@ -20,6 +20,7 @@ use rustc_serialize::{
 use rustc_session::{CrateDisambiguator, Session};
 use rustc_span::hygiene::{ExpnId, SyntaxContext};
 use rustc_span::source_map::{SourceMap, StableSourceFileId};
+use rustc_span::CachingSourceMapView;
 use rustc_span::{BytePos, SourceFile, Span, DUMMY_SP};
 use std::mem;
 

src/librustc/ty/query/plumbing.rs

@@ -667,7 +667,7 @@ impl<'tcx> TyCtxt<'tcx> {
         dep_node: &DepNode,
         dep_node_index: DepNodeIndex,
     ) {
-        use crate::ich::Fingerprint;
+        use rustc_data_structures::fingerprint::Fingerprint;
 
         assert!(
             Some(self.dep_graph.fingerprint_of(dep_node_index))

src/librustc/ty/query/profiling_support.rs

@@ -1,4 +1,3 @@
-use crate::hir::map::definitions::DefPathData;
 use crate::ty::context::TyCtxt;
 use crate::ty::query::caches::QueryCache;
 use crate::ty::query::plumbing::QueryState;
@@ -6,6 +5,7 @@ use measureme::{StringComponent, StringId};
 use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::profiling::SelfProfiler;
 use rustc_hir::def_id::{CrateNum, DefId, DefIndex, CRATE_DEF_INDEX, LOCAL_CRATE};
+use rustc_hir::definitions::DefPathData;
 use std::fmt::Debug;
 use std::io::Write;
 

src/librustc/ty/trait_def.rs

@@ -1,4 +1,3 @@
-use crate::hir::map::DefPathHash;
 use crate::ich::{self, StableHashingContext};
 use crate::traits::specialization_graph;
 use crate::ty::fast_reject;
@@ -6,6 +5,7 @@ use crate::ty::fold::TypeFoldable;
 use crate::ty::{Ty, TyCtxt};
 use rustc_hir as hir;
 use rustc_hir::def_id::{CrateNum, DefId};
+use rustc_hir::definitions::DefPathHash;
 use rustc_hir::HirId;
 
 use rustc_data_structures::fx::FxHashMap;

src/librustc/ty/util.rs

@@ -1,6 +1,5 @@
 //! Miscellaneous type-system utilities that are too small to deserve their own modules.
 
-use crate::hir::map::DefPathData;
 use crate::ich::NodeIdHashingMode;
 use crate::mir::interpret::{sign_extend, truncate};
 use crate::ty::layout::{Integer, IntegerExt, Size};
@@ -17,6 +16,7 @@ use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 use rustc_hir as hir;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::DefId;
+use rustc_hir::definitions::DefPathData;
 use rustc_macros::HashStable;
 use rustc_span::Span;
 use rustc_target::abi::TargetDataLayout;

src/librustc_codegen_llvm/debuginfo/namespace.rs

@@ -6,8 +6,8 @@ use rustc::ty::{self, Instance};
 use crate::common::CodegenCx;
 use crate::llvm;
 use crate::llvm::debuginfo::DIScope;
-use rustc::hir::map::DefPathData;
 use rustc_hir::def_id::DefId;
+use rustc_hir::definitions::DefPathData;
 
 pub fn mangled_name_of_instance<'a, 'tcx>(
     cx: &CodegenCx<'a, 'tcx>,

src/librustc_infer/infer/error_reporting/mod.rs

@@ -55,7 +55,6 @@ use crate::traits::{
     IfExpressionCause, MatchExpressionArmCause, ObligationCause, ObligationCauseCode,
 };
 
-use rustc::hir::map;
 use rustc::middle::region;
 use rustc::ty::error::TypeError;
 use rustc::ty::{
@@ -549,7 +548,7 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> {
         terr: &TypeError<'tcx>,
     ) {
         use hir::def_id::CrateNum;
-        use map::DisambiguatedDefPathData;
+        use rustc_hir::definitions::DisambiguatedDefPathData;
         use ty::print::Printer;
         use ty::subst::GenericArg;
 

src/librustc_interface/passes.rs

@@ -5,7 +5,6 @@ use crate::util;
 use log::{info, log_enabled, warn};
 use rustc::arena::Arena;
 use rustc::dep_graph::DepGraph;
-use rustc::hir::map::Definitions;
 use rustc::middle;
 use rustc::middle::cstore::{CrateStore, MetadataLoader, MetadataLoaderDyn};
 use rustc::ty::steal::Steal;
@@ -20,6 +19,7 @@ use rustc_data_structures::{box_region_allow_access, declare_box_region_type, pa
 use rustc_errors::PResult;
 use rustc_expand::base::ExtCtxt;
 use rustc_hir::def_id::{CrateNum, LOCAL_CRATE};
+use rustc_hir::definitions::Definitions;
 use rustc_hir::Crate;
 use rustc_lint::LintStore;
 use rustc_mir as mir;

src/librustc_metadata/creader.rs

@@ -3,7 +3,6 @@
 use crate::locator::{CrateLocator, CratePaths};
 use crate::rmeta::{CrateDep, CrateMetadata, CrateNumMap, CrateRoot, MetadataBlob};
 
-use rustc::hir::map::Definitions;
 use rustc::middle::cstore::DepKind;
 use rustc::middle::cstore::{CrateSource, ExternCrate, ExternCrateSource, MetadataLoaderDyn};
 use rustc::ty::TyCtxt;
@@ -14,6 +13,7 @@ use rustc_data_structures::sync::Lrc;
 use rustc_errors::struct_span_err;
 use rustc_expand::base::SyntaxExtension;
 use rustc_hir::def_id::{CrateNum, LOCAL_CRATE};
+use rustc_hir::definitions::Definitions;
 use rustc_index::vec::IndexVec;
 use rustc_session::config;
 use rustc_session::output::validate_crate_name;

src/librustc_metadata/rmeta/mod.rs

@@ -2,7 +2,6 @@ use decoder::Metadata;
 use table::{Table, TableBuilder};
 
 use rustc::hir::exports::Export;
-use rustc::hir::map;
 use rustc::middle::cstore::{DepKind, ForeignModule, LinkagePreference, NativeLibrary};
 use rustc::middle::exported_symbols::{ExportedSymbol, SymbolExportLevel};
 use rustc::middle::lang_items;
@@ -194,7 +193,7 @@ crate struct CrateRoot<'tcx> {
     native_libraries: Lazy<[NativeLibrary]>,
     foreign_modules: Lazy<[ForeignModule]>,
     source_map: Lazy<[rustc_span::SourceFile]>,
-    def_path_table: Lazy<map::definitions::DefPathTable>,
+    def_path_table: Lazy<rustc_hir::definitions::DefPathTable>,
     impls: Lazy<[TraitImpls]>,
     interpret_alloc_index: Lazy<[u32]>,
 

src/librustc_mir/interpret/intrinsics/type_name.rs

@@ -1,4 +1,3 @@
-use rustc::hir::map::{DefPathData, DisambiguatedDefPathData};
 use rustc::mir::interpret::Allocation;
 use rustc::ty::{
     self,
@@ -7,6 +6,7 @@ use rustc::ty::{
     Ty, TyCtxt,
 };
 use rustc_hir::def_id::CrateNum;
+use rustc_hir::definitions::{DefPathData, DisambiguatedDefPathData};
 use std::fmt::Write;
 
 struct AbsolutePathPrinter<'tcx> {

src/librustc_resolve/lib.rs

@@ -17,7 +17,6 @@ pub use rustc_hir::def::{Namespace, PerNS};
 use Determinacy::*;
 
 use rustc::hir::exports::ExportMap;
-use rustc::hir::map::{DefKey, Definitions};
 use rustc::middle::cstore::{CrateStore, MetadataLoaderDyn};
 use rustc::span_bug;
 use rustc::ty::query::Providers;
@@ -38,6 +37,7 @@ use rustc_expand::base::SyntaxExtension;
 use rustc_hir::def::Namespace::*;
 use rustc_hir::def::{self, CtorOf, DefKind, NonMacroAttrKind, PartialRes};
 use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, CRATE_DEF_INDEX};
+use rustc_hir::definitions::{DefKey, Definitions};
 use rustc_hir::PrimTy::{self, Bool, Char, Float, Int, Str, Uint};
 use rustc_hir::{GlobMap, TraitMap};
 use rustc_metadata::creader::{CStore, CrateLoader};

src/librustc_symbol_mangling/legacy.rs

@@ -1,4 +1,3 @@
-use rustc::hir::map::{DefPathData, DisambiguatedDefPathData};
 use rustc::ich::NodeIdHashingMode;
 use rustc::mir::interpret::{ConstValue, Scalar};
 use rustc::ty::print::{PrettyPrinter, Print, Printer};
@@ -7,6 +6,7 @@ use rustc::ty::{self, Instance, Ty, TyCtxt, TypeFoldable};
 use rustc::util::common::record_time;
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 use rustc_hir::def_id::CrateNum;
+use rustc_hir::definitions::{DefPathData, DisambiguatedDefPathData};
 
 use log::debug;
 

src/librustc_symbol_mangling/v0.rs

@@ -1,4 +1,3 @@
-use rustc::hir::map::{DefPathData, DisambiguatedDefPathData};
 use rustc::ty::print::{Print, Printer};
 use rustc::ty::subst::{GenericArg, GenericArgKind, Subst};
 use rustc::ty::{self, Instance, Ty, TyCtxt, TypeFoldable};
@@ -7,6 +6,7 @@ use rustc_data_structures::base_n;
 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
 use rustc_hir as hir;
 use rustc_hir::def_id::{CrateNum, DefId};
+use rustc_hir::definitions::{DefPathData, DisambiguatedDefPathData};
 use rustc_target::spec::abi::Abi;
 
 use std::fmt::Write;