extract rustc::middle::codegen_fn_attrs

src/librustc/hir/mod.rs

@@ -10,7 +10,6 @@ pub use self::UnsafeSource::*;
 
 use crate::hir::def::{DefKind, Res};
 use crate::hir::def_id::{DefId, DefIndex, LocalDefId, CRATE_DEF_INDEX};
-use crate::mir::mono::Linkage;
 use crate::ty::query::Providers;
 use crate::util::nodemap::{FxHashSet, NodeMap};
 
@@ -29,7 +28,6 @@ use syntax::ast::{self, AsmDialect, CrateSugar, Ident, Name, NodeId};
 use syntax::ast::{AttrVec, Attribute, FloatTy, IntTy, Label, LitKind, StrStyle, UintTy};
 pub use syntax::ast::{BorrowKind, ImplPolarity, IsAuto};
 pub use syntax::ast::{CaptureBy, Constness, Movability, Mutability, Unsafety};
-use syntax::attr::{InlineAttr, OptimizeAttr};
 use syntax::tokenstream::TokenStream;
 use syntax::util::parser::ExprPrecedence;
 
@@ -2668,119 +2666,6 @@ pub fn provide(providers: &mut Providers<'_>) {
     upvars::provide(providers);
 }
 
-#[derive(Clone, RustcEncodable, RustcDecodable, HashStable)]
-pub struct CodegenFnAttrs {
-    pub flags: CodegenFnAttrFlags,
-    /// Parsed representation of the `#[inline]` attribute
-    pub inline: InlineAttr,
-    /// Parsed representation of the `#[optimize]` attribute
-    pub optimize: OptimizeAttr,
-    /// The `#[export_name = "..."]` attribute, indicating a custom symbol a
-    /// function should be exported under
-    pub export_name: Option<Symbol>,
-    /// The `#[link_name = "..."]` attribute, indicating a custom symbol an
-    /// imported function should be imported as. Note that `export_name`
-    /// probably isn't set when this is set, this is for foreign items while
-    /// `#[export_name]` is for Rust-defined functions.
-    pub link_name: Option<Symbol>,
-    /// The `#[link_ordinal = "..."]` attribute, indicating an ordinal an
-    /// imported function has in the dynamic library. Note that this must not
-    /// be set when `link_name` is set. This is for foreign items with the
-    /// "raw-dylib" kind.
-    pub link_ordinal: Option<usize>,
-    /// The `#[target_feature(enable = "...")]` attribute and the enabled
-    /// features (only enabled features are supported right now).
-    pub target_features: Vec<Symbol>,
-    /// The `#[linkage = "..."]` attribute and the value we found.
-    pub linkage: Option<Linkage>,
-    /// The `#[link_section = "..."]` attribute, or what executable section this
-    /// should be placed in.
-    pub link_section: Option<Symbol>,
-}
-
-bitflags! {
-    #[derive(RustcEncodable, RustcDecodable, HashStable)]
-    pub struct CodegenFnAttrFlags: u32 {
-        /// `#[cold]`: a hint to LLVM that this function, when called, is never on
-        /// the hot path.
-        const COLD                      = 1 << 0;
-        /// `#[rustc_allocator]`: a hint to LLVM that the pointer returned from this
-        /// function is never null.
-        const ALLOCATOR                 = 1 << 1;
-        /// `#[unwind]`: an indicator that this function may unwind despite what
-        /// its ABI signature may otherwise imply.
-        const UNWIND                    = 1 << 2;
-        /// `#[rust_allocator_nounwind]`, an indicator that an imported FFI
-        /// function will never unwind. Probably obsolete by recent changes with
-        /// #[unwind], but hasn't been removed/migrated yet
-        const RUSTC_ALLOCATOR_NOUNWIND  = 1 << 3;
-        /// `#[naked]`: an indicator to LLVM that no function prologue/epilogue
-        /// should be generated.
-        const NAKED                     = 1 << 4;
-        /// `#[no_mangle]`: an indicator that the function's name should be the same
-        /// as its symbol.
-        const NO_MANGLE                 = 1 << 5;
-        /// `#[rustc_std_internal_symbol]`: an indicator that this symbol is a
-        /// "weird symbol" for the standard library in that it has slightly
-        /// different linkage, visibility, and reachability rules.
-        const RUSTC_STD_INTERNAL_SYMBOL = 1 << 6;
-        /// `#[no_debug]`: an indicator that no debugging information should be
-        /// generated for this function by LLVM.
-        const NO_DEBUG                  = 1 << 7;
-        /// `#[thread_local]`: indicates a static is actually a thread local
-        /// piece of memory
-        const THREAD_LOCAL              = 1 << 8;
-        /// `#[used]`: indicates that LLVM can't eliminate this function (but the
-        /// linker can!).
-        const USED                      = 1 << 9;
-        /// `#[ffi_returns_twice]`, indicates that an extern function can return
-        /// multiple times
-        const FFI_RETURNS_TWICE         = 1 << 10;
-        /// `#[track_caller]`: allow access to the caller location
-        const TRACK_CALLER              = 1 << 11;
-    }
-}
-
-impl CodegenFnAttrs {
-    pub fn new() -> CodegenFnAttrs {
-        CodegenFnAttrs {
-            flags: CodegenFnAttrFlags::empty(),
-            inline: InlineAttr::None,
-            optimize: OptimizeAttr::None,
-            export_name: None,
-            link_name: None,
-            link_ordinal: None,
-            target_features: vec![],
-            linkage: None,
-            link_section: None,
-        }
-    }
-
-    /// Returns `true` if `#[inline]` or `#[inline(always)]` is present.
-    pub fn requests_inline(&self) -> bool {
-        match self.inline {
-            InlineAttr::Hint | InlineAttr::Always => true,
-            InlineAttr::None | InlineAttr::Never => false,
-        }
-    }
-
-    /// Returns `true` if it looks like this symbol needs to be exported, for example:
-    ///
-    /// * `#[no_mangle]` is present
-    /// * `#[export_name(...)]` is present
-    /// * `#[linkage]` is present
-    pub fn contains_extern_indicator(&self) -> bool {
-        self.flags.contains(CodegenFnAttrFlags::NO_MANGLE)
-            || self.export_name.is_some()
-            || match self.linkage {
-                // These are private, so make sure we don't try to consider
-                // them external.
-                None | Some(Linkage::Internal) | Some(Linkage::Private) => false,
-                Some(_) => true,
-            }
-    }
-}
-
 #[derive(Copy, Clone, Debug)]
 pub enum Node<'hir> {
     Param(&'hir Param<'hir>),

src/librustc/middle/codegen_fn_attrs.rs

@@ -0,0 +1,116 @@
+use crate::mir::mono::Linkage;
+use rustc_span::symbol::Symbol;
+use syntax::attr::{InlineAttr, OptimizeAttr};
+
+#[derive(Clone, RustcEncodable, RustcDecodable, HashStable)]
+pub struct CodegenFnAttrs {
+    pub flags: CodegenFnAttrFlags,
+    /// Parsed representation of the `#[inline]` attribute
+    pub inline: InlineAttr,
+    /// Parsed representation of the `#[optimize]` attribute
+    pub optimize: OptimizeAttr,
+    /// The `#[export_name = "..."]` attribute, indicating a custom symbol a
+    /// function should be exported under
+    pub export_name: Option<Symbol>,
+    /// The `#[link_name = "..."]` attribute, indicating a custom symbol an
+    /// imported function should be imported as. Note that `export_name`
+    /// probably isn't set when this is set, this is for foreign items while
+    /// `#[export_name]` is for Rust-defined functions.
+    pub link_name: Option<Symbol>,
+    /// The `#[link_ordinal = "..."]` attribute, indicating an ordinal an
+    /// imported function has in the dynamic library. Note that this must not
+    /// be set when `link_name` is set. This is for foreign items with the
+    /// "raw-dylib" kind.
+    pub link_ordinal: Option<usize>,
+    /// The `#[target_feature(enable = "...")]` attribute and the enabled
+    /// features (only enabled features are supported right now).
+    pub target_features: Vec<Symbol>,
+    /// The `#[linkage = "..."]` attribute and the value we found.
+    pub linkage: Option<Linkage>,
+    /// The `#[link_section = "..."]` attribute, or what executable section this
+    /// should be placed in.
+    pub link_section: Option<Symbol>,
+}
+
+bitflags! {
+    #[derive(RustcEncodable, RustcDecodable, HashStable)]
+    pub struct CodegenFnAttrFlags: u32 {
+        /// `#[cold]`: a hint to LLVM that this function, when called, is never on
+        /// the hot path.
+        const COLD                      = 1 << 0;
+        /// `#[rustc_allocator]`: a hint to LLVM that the pointer returned from this
+        /// function is never null.
+        const ALLOCATOR                 = 1 << 1;
+        /// `#[unwind]`: an indicator that this function may unwind despite what
+        /// its ABI signature may otherwise imply.
+        const UNWIND                    = 1 << 2;
+        /// `#[rust_allocator_nounwind]`, an indicator that an imported FFI
+        /// function will never unwind. Probably obsolete by recent changes with
+        /// #[unwind], but hasn't been removed/migrated yet
+        const RUSTC_ALLOCATOR_NOUNWIND  = 1 << 3;
+        /// `#[naked]`: an indicator to LLVM that no function prologue/epilogue
+        /// should be generated.
+        const NAKED                     = 1 << 4;
+        /// `#[no_mangle]`: an indicator that the function's name should be the same
+        /// as its symbol.
+        const NO_MANGLE                 = 1 << 5;
+        /// `#[rustc_std_internal_symbol]`: an indicator that this symbol is a
+        /// "weird symbol" for the standard library in that it has slightly
+        /// different linkage, visibility, and reachability rules.
+        const RUSTC_STD_INTERNAL_SYMBOL = 1 << 6;
+        /// `#[no_debug]`: an indicator that no debugging information should be
+        /// generated for this function by LLVM.
+        const NO_DEBUG                  = 1 << 7;
+        /// `#[thread_local]`: indicates a static is actually a thread local
+        /// piece of memory
+        const THREAD_LOCAL              = 1 << 8;
+        /// `#[used]`: indicates that LLVM can't eliminate this function (but the
+        /// linker can!).
+        const USED                      = 1 << 9;
+        /// `#[ffi_returns_twice]`, indicates that an extern function can return
+        /// multiple times
+        const FFI_RETURNS_TWICE         = 1 << 10;
+        /// `#[track_caller]`: allow access to the caller location
+        const TRACK_CALLER              = 1 << 11;
+    }
+}
+
+impl CodegenFnAttrs {
+    pub fn new() -> CodegenFnAttrs {
+        CodegenFnAttrs {
+            flags: CodegenFnAttrFlags::empty(),
+            inline: InlineAttr::None,
+            optimize: OptimizeAttr::None,
+            export_name: None,
+            link_name: None,
+            link_ordinal: None,
+            target_features: vec![],
+            linkage: None,
+            link_section: None,
+        }
+    }
+
+    /// Returns `true` if `#[inline]` or `#[inline(always)]` is present.
+    pub fn requests_inline(&self) -> bool {
+        match self.inline {
+            InlineAttr::Hint | InlineAttr::Always => true,
+            InlineAttr::None | InlineAttr::Never => false,
+        }
+    }
+
+    /// Returns `true` if it looks like this symbol needs to be exported, for example:
+    ///
+    /// * `#[no_mangle]` is present
+    /// * `#[export_name(...)]` is present
+    /// * `#[linkage]` is present
+    pub fn contains_extern_indicator(&self) -> bool {
+        self.flags.contains(CodegenFnAttrFlags::NO_MANGLE)
+            || self.export_name.is_some()
+            || match self.linkage {
+                // These are private, so make sure we don't try to consider
+                // them external.
+                None | Some(Linkage::Internal) | Some(Linkage::Private) => false,
+                Some(_) => true,
+            }
+    }
+}

src/librustc/middle/mod.rs

@@ -1,3 +1,4 @@
+pub mod codegen_fn_attrs;
 pub mod cstore;
 pub mod dependency_format;
 pub mod exported_symbols;

src/librustc/ty/instance.rs

@@ -1,6 +1,6 @@
 use crate::hir::def::Namespace;
 use crate::hir::def_id::DefId;
-use crate::hir::CodegenFnAttrFlags;
+use crate::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use crate::middle::lang_items::DropInPlaceFnLangItem;
 use crate::traits;
 use crate::ty::print::{FmtPrinter, Printer};

src/librustc/ty/query/mod.rs

@@ -1,9 +1,10 @@
 use crate::dep_graph::{self, DepNode};
 use crate::hir::def::{DefKind, Export};
 use crate::hir::def_id::{CrateNum, DefId, DefIndex};
-use crate::hir::{self, CodegenFnAttrs, ItemLocalId, TraitCandidate};
+use crate::hir::{self, ItemLocalId, TraitCandidate};
 use crate::infer::canonical::{self, Canonical};
 use crate::lint;
+use crate::middle::codegen_fn_attrs::CodegenFnAttrs;
 use crate::middle::cstore::{CrateSource, DepKind, NativeLibraryKind};
 use crate::middle::cstore::{ExternCrate, ForeignModule, LinkagePreference, NativeLibrary};
 use crate::middle::exported_symbols::{ExportedSymbol, SymbolExportLevel};

src/librustc_codegen_llvm/attributes.rs

@@ -3,7 +3,7 @@
 use std::ffi::CString;
 
 use rustc::hir::def_id::{DefId, LOCAL_CRATE};
-use rustc::hir::CodegenFnAttrFlags;
+use rustc::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc::session::config::{OptLevel, Sanitizer};
 use rustc::session::Session;
 use rustc::ty::layout::HasTyCtxt;

src/librustc_codegen_llvm/base.rs

@@ -14,33 +14,32 @@
 //!   int)` and `rec(x=int, y=int, z=int)` will have the same `llvm::Type`.
 
 use super::{LlvmCodegenBackend, ModuleLlvm};
-use rustc_codegen_ssa::base::maybe_create_entry_wrapper;
-use rustc_codegen_ssa::{ModuleCodegen, ModuleKind};
 
 use crate::builder::Builder;
 use crate::common;
 use crate::context::CodegenCx;
 use crate::llvm;
 use crate::metadata;
+use crate::value::Value;
+
 use rustc::dep_graph;
+use rustc::middle::codegen_fn_attrs::CodegenFnAttrs;
 use rustc::middle::cstore::EncodedMetadata;
 use rustc::middle::exported_symbols;
 use rustc::mir::mono::{Linkage, Visibility};
 use rustc::session::config::DebugInfo;
 use rustc::ty::TyCtxt;
-use rustc_codegen_ssa::mono_item::MonoItemExt;
-use rustc_data_structures::small_c_str::SmallCStr;
-
 use rustc_codegen_ssa::back::write::submit_codegened_module_to_llvm;
+use rustc_codegen_ssa::base::maybe_create_entry_wrapper;
+use rustc_codegen_ssa::mono_item::MonoItemExt;
 use rustc_codegen_ssa::traits::*;
-
-use rustc::hir::CodegenFnAttrs;
+use rustc_codegen_ssa::{ModuleCodegen, ModuleKind};
+use rustc_data_structures::small_c_str::SmallCStr;
 use rustc_span::symbol::Symbol;
+
 use std::ffi::CString;
 use std::time::Instant;
 
-use crate::value::Value;
-
 pub fn write_compressed_metadata<'tcx>(
     tcx: TyCtxt<'tcx>,
     metadata: &EncodedMetadata,

src/librustc_codegen_llvm/consts.rs

@@ -8,9 +8,11 @@ use crate::value::Value;
 use libc::c_uint;
 use log::debug;
 use rustc::hir::def_id::DefId;
-use rustc::hir::Node;
+use rustc::hir::{self, Node};
+use rustc::middle::codegen_fn_attrs::{CodegenFnAttrFlags, CodegenFnAttrs};
 use rustc::mir::interpret::{read_target_uint, Allocation, ConstValue, ErrorHandled, Pointer};
 use rustc::mir::mono::MonoItem;
+use rustc::ty::layout::{self, Align, LayoutOf, Size};
 use rustc::ty::{self, Instance, Ty};
 use rustc::{bug, span_bug};
 use rustc_codegen_ssa::traits::*;
@@ -18,10 +20,6 @@ use rustc_span::symbol::{sym, Symbol};
 use rustc_span::Span;
 use rustc_target::abi::HasDataLayout;
 
-use rustc::ty::layout::{self, Align, LayoutOf, Size};
-
-use rustc::hir::{self, CodegenFnAttrFlags, CodegenFnAttrs};
-
 use std::ffi::CStr;
 
 pub fn const_alloc_to_llvm(cx: &CodegenCx<'ll, '_>, alloc: &Allocation) -> &'ll Value {

src/librustc_codegen_llvm/debuginfo/metadata.rs

@@ -22,8 +22,8 @@ use crate::value::Value;
 use log::debug;
 use rustc::hir::def::CtorKind;
 use rustc::hir::def_id::{CrateNum, DefId, LOCAL_CRATE};
-use rustc::hir::CodegenFnAttrFlags;
 use rustc::ich::NodeIdHashingMode;
+use rustc::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc::mir::interpret::truncate;
 use rustc::mir::{self, Field, GeneratorLayout};
 use rustc::session::config::{self, DebugInfo};

src/librustc_codegen_llvm/debuginfo/mod.rs

@@ -14,7 +14,7 @@ use crate::llvm::debuginfo::{
     DIArray, DIBuilder, DIFile, DIFlags, DILexicalBlock, DISPFlags, DIScope, DIType,
 };
 use rustc::hir::def_id::{CrateNum, DefId, LOCAL_CRATE};
-use rustc::hir::CodegenFnAttrFlags;
+use rustc::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc::ty::subst::{GenericArgKind, SubstsRef};
 
 use crate::abi::FnAbi;

src/librustc_codegen_ssa/back/symbol_export.rs

@@ -3,8 +3,8 @@ use std::sync::Arc;
 
 use rustc::hir;
 use rustc::hir::def_id::{CrateNum, DefId, CRATE_DEF_INDEX, LOCAL_CRATE};
-use rustc::hir::CodegenFnAttrFlags;
 use rustc::hir::Node;
+use rustc::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc::middle::exported_symbols::{metadata_symbol_name, ExportedSymbol, SymbolExportLevel};
 use rustc::session::config;
 use rustc::ty::query::Providers;

src/librustc_codegen_ssa/base.rs

@@ -27,6 +27,7 @@ use crate::{CachedModuleCodegen, CrateInfo, MemFlags, ModuleCodegen, ModuleKind}
 
 use rustc::hir;
 use rustc::hir::def_id::{DefId, LOCAL_CRATE};
+use rustc::middle::codegen_fn_attrs::CodegenFnAttrs;
 use rustc::middle::cstore::EncodedMetadata;
 use rustc::middle::cstore::{self, LinkagePreference};
 use rustc::middle::lang_items::StartFnLangItem;
@@ -811,7 +812,7 @@ pub fn provide_both(providers: &mut Providers<'_>) {
 
         let (defids, _) = tcx.collect_and_partition_mono_items(cratenum);
         for id in &*defids {
-            let hir::CodegenFnAttrs { optimize, .. } = tcx.codegen_fn_attrs(*id);
+            let CodegenFnAttrs { optimize, .. } = tcx.codegen_fn_attrs(*id);
             match optimize {
                 attr::OptimizeAttr::None => continue,
                 attr::OptimizeAttr::Size => continue,

src/librustc_codegen_utils/symbol_names.rs

@@ -88,8 +88,8 @@
 //! DefPaths which are much more robust in the face of changes to the code base.
 
 use rustc::hir::def_id::LOCAL_CRATE;
-use rustc::hir::CodegenFnAttrFlags;
 use rustc::hir::Node;
+use rustc::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc::mir::mono::{InstantiationMode, MonoItem};
 use rustc::session::config::SymbolManglingVersion;
 use rustc::ty::query::Providers;

src/librustc_mir/monomorphize/collector.rs

@@ -176,9 +176,10 @@
 
 use crate::monomorphize;
 
+use rustc::hir;
 use rustc::hir::def_id::{DefId, LOCAL_CRATE};
 use rustc::hir::itemlikevisit::ItemLikeVisitor;
-use rustc::hir::{self, CodegenFnAttrFlags};
+use rustc::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc::middle::lang_items::{ExchangeMallocFnLangItem, StartFnLangItem};
 use rustc::mir::interpret::{AllocId, ConstValue};
 use rustc::mir::interpret::{ErrorHandled, GlobalAlloc, Scalar};

src/librustc_mir/monomorphize/partitioning.rs

@@ -98,7 +98,7 @@ use std::sync::Arc;
 
 use rustc::hir::def::DefKind;
 use rustc::hir::def_id::{CrateNum, DefId, CRATE_DEF_INDEX, LOCAL_CRATE};
-use rustc::hir::CodegenFnAttrFlags;
+use rustc::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc::middle::exported_symbols::SymbolExportLevel;
 use rustc::mir::mono::{CodegenUnit, CodegenUnitNameBuilder, Linkage, Visibility};
 use rustc::mir::mono::{InstantiationMode, MonoItem};

src/librustc_mir/transform/inline.rs

@@ -1,11 +1,11 @@
 //! Inlining pass for MIR functions
 
 use rustc::hir::def_id::DefId;
-use rustc::hir::CodegenFnAttrFlags;
 
 use rustc_index::bit_set::BitSet;
 use rustc_index::vec::{Idx, IndexVec};
 
+use rustc::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc::mir::visit::*;
 use rustc::mir::*;
 use rustc::ty::subst::{InternalSubsts, Subst, SubstsRef};

src/librustc_passes/dead.rs

@@ -9,8 +9,8 @@ use rustc::hir::{self, PatKind, TyKind};
 
 use rustc::hir::def::{CtorOf, DefKind, Res};
 use rustc::hir::def_id::{DefId, LOCAL_CRATE};
-use rustc::hir::CodegenFnAttrFlags;
 use rustc::lint;
+use rustc::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc::middle::privacy;
 use rustc::ty::{self, DefIdTree, TyCtxt};
 use rustc::util::nodemap::FxHashSet;

src/librustc_passes/reachable.rs

@@ -5,22 +5,21 @@
 // makes all other generics or inline functions that it references
 // reachable as well.
 
+use rustc::hir;
 use rustc::hir::def::{DefKind, Res};
+use rustc::hir::def_id::LOCAL_CRATE;
 use rustc::hir::def_id::{CrateNum, DefId};
+use rustc::hir::intravisit;
+use rustc::hir::intravisit::{NestedVisitorMap, Visitor};
+use rustc::hir::itemlikevisit::ItemLikeVisitor;
 use rustc::hir::Node;
-use rustc::hir::{CodegenFnAttrFlags, CodegenFnAttrs};
+use rustc::middle::codegen_fn_attrs::{CodegenFnAttrFlags, CodegenFnAttrs};
 use rustc::middle::privacy;
 use rustc::session::config;
 use rustc::ty::query::Providers;
 use rustc::ty::{self, TyCtxt};
 use rustc::util::nodemap::{FxHashSet, HirIdSet};
 use rustc_data_structures::sync::Lrc;
-
-use rustc::hir;
-use rustc::hir::def_id::LOCAL_CRATE;
-use rustc::hir::intravisit;
-use rustc::hir::intravisit::{NestedVisitorMap, Visitor};
-use rustc::hir::itemlikevisit::ItemLikeVisitor;
 use rustc_target::spec::abi::Abi;
 
 // Returns true if the given item must be inlined because it may be

src/librustc_typeck/collect.rs

@@ -20,6 +20,7 @@ use crate::constrained_generic_params as cgp;
 use crate::lint;
 use crate::middle::resolve_lifetime as rl;
 use crate::middle::weak_lang_items;
+use rustc::middle::codegen_fn_attrs::{CodegenFnAttrFlags, CodegenFnAttrs};
 use rustc::mir::mono::Linkage;
 use rustc::ty::query::Providers;
 use rustc::ty::subst::GenericArgKind;
@@ -44,7 +45,7 @@ use rustc::hir::def_id::{DefId, LOCAL_CRATE};
 use rustc::hir::intravisit::{self, NestedVisitorMap, Visitor};
 use rustc::hir::GenericParamKind;
 use rustc::hir::Node;
-use rustc::hir::{self, CodegenFnAttrFlags, CodegenFnAttrs, Unsafety};
+use rustc::hir::{self, Unsafety};
 
 use errors::{Applicability, StashKey};