Rollup merge of rust-lang#58720 - Centril:deny-elided_lifetimes_in_pa…

…ths-librustc_codegen_ssa, r=oli-obk

librustc_codegen_ssa: #![deny(elided_lifetimes_in_paths)]

As part of the Rust 2018 transition, remove `#![allow(elided_lifetimes_in_paths)]` from `librustc_codegen_ssa`.

r? @oli-obk

src/librustc_codegen_ssa/back/command.rs

@@ -159,7 +159,7 @@ impl Command {
 }
 
 impl fmt::Debug for Command {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         self.command().fmt(f)
     }
 }

src/librustc_codegen_ssa/back/linker.rs

@@ -25,7 +25,7 @@ pub struct LinkerInfo {
 }
 
 impl LinkerInfo {
-    pub fn new(tcx: TyCtxt) -> LinkerInfo {
+    pub fn new(tcx: TyCtxt<'_, '_, '_>) -> LinkerInfo {
         LinkerInfo {
             exports: tcx.sess.crate_types.borrow().iter().map(|&c| {
                 (c, exported_symbols(tcx, c))
@@ -1052,7 +1052,7 @@ impl<'a> Linker for WasmLd<'a> {
     }
 }
 
-fn exported_symbols(tcx: TyCtxt, crate_type: CrateType) -> Vec<String> {
+fn exported_symbols(tcx: TyCtxt<'_, '_, '_>, crate_type: CrateType) -> Vec<String> {
     if let Some(ref exports) = tcx.sess.target.target.options.override_export_symbols {
         return exports.clone()
     }

src/librustc_codegen_ssa/back/symbol_export.rs

@@ -22,7 +22,7 @@ pub type ExportedSymbols = FxHashMap<
     Arc<Vec<(String, SymbolExportLevel)>>,
 >;
 
-pub fn threshold(tcx: TyCtxt) -> SymbolExportLevel {
+pub fn threshold(tcx: TyCtxt<'_, '_, '_>) -> SymbolExportLevel {
     crates_export_threshold(&tcx.sess.crate_types.borrow())
 }
 
@@ -342,7 +342,7 @@ fn upstream_monomorphizations_for_provider<'a, 'tcx>(
        .cloned()
 }
 
-fn is_unreachable_local_definition_provider(tcx: TyCtxt, def_id: DefId) -> bool {
+fn is_unreachable_local_definition_provider(tcx: TyCtxt<'_, '_, '_>, def_id: DefId) -> bool {
     if let Some(node_id) = tcx.hir().as_local_node_id(def_id) {
         !tcx.reachable_set(LOCAL_CRATE).0.contains(&node_id)
     } else {
@@ -351,20 +351,20 @@ fn is_unreachable_local_definition_provider(tcx: TyCtxt, def_id: DefId) -> bool
     }
 }
 
-pub fn provide(providers: &mut Providers) {
+pub fn provide(providers: &mut Providers<'_>) {
     providers.reachable_non_generics = reachable_non_generics_provider;
     providers.is_reachable_non_generic = is_reachable_non_generic_provider_local;
     providers.exported_symbols = exported_symbols_provider_local;
     providers.upstream_monomorphizations = upstream_monomorphizations_provider;
     providers.is_unreachable_local_definition = is_unreachable_local_definition_provider;
 }
 
-pub fn provide_extern(providers: &mut Providers) {
+pub fn provide_extern(providers: &mut Providers<'_>) {
     providers.is_reachable_non_generic = is_reachable_non_generic_provider_extern;
     providers.upstream_monomorphizations_for = upstream_monomorphizations_for_provider;
 }
 
-fn symbol_export_level(tcx: TyCtxt, sym_def_id: DefId) -> SymbolExportLevel {
+fn symbol_export_level(tcx: TyCtxt<'_, '_, '_>, sym_def_id: DefId) -> SymbolExportLevel {
     // We export anything that's not mangled at the "C" layer as it probably has
     // to do with ABI concerns. We do not, however, apply such treatment to
     // special symbols in the standard library for various plumbing between

src/librustc_codegen_ssa/back/write.rs

@@ -321,7 +321,7 @@ fn need_pre_lto_bitcode_for_incr_comp(sess: &Session) -> bool {
 
 pub fn start_async_codegen<B: ExtraBackendMethods>(
     backend: B,
-    tcx: TyCtxt,
+    tcx: TyCtxt<'_, '_, '_>,
     time_graph: Option<TimeGraph>,
     metadata: EncodedMetadata,
     coordinator_receive: Receiver<Box<dyn Any + Send>>,
@@ -947,7 +947,7 @@ enum MainThreadWorkerState {
 
 fn start_executing_work<B: ExtraBackendMethods>(
     backend: B,
-    tcx: TyCtxt,
+    tcx: TyCtxt<'_, '_, '_>,
     crate_info: &CrateInfo,
     shared_emitter: SharedEmitter,
     codegen_worker_send: Sender<Message<B>>,
@@ -1683,7 +1683,7 @@ impl SharedEmitter {
 }
 
 impl Emitter for SharedEmitter {
-    fn emit(&mut self, db: &DiagnosticBuilder) {
+    fn emit(&mut self, db: &DiagnosticBuilder<'_>) {
         drop(self.sender.send(SharedEmitterMessage::Diagnostic(Diagnostic {
             msg: db.message(),
             code: db.code.clone(),
@@ -1822,7 +1822,7 @@ impl<B: ExtraBackendMethods> OngoingCodegen<B> {
     }
 
     pub fn submit_pre_codegened_module_to_llvm(&self,
-                                                       tcx: TyCtxt,
+                                                       tcx: TyCtxt<'_, '_, '_>,
                                                        module: ModuleCodegen<B::Module>) {
         self.wait_for_signal_to_codegen_item();
         self.check_for_errors(tcx.sess);
@@ -1832,7 +1832,7 @@ impl<B: ExtraBackendMethods> OngoingCodegen<B> {
         submit_codegened_module_to_llvm(&self.backend, tcx, module, cost);
     }
 
-    pub fn codegen_finished(&self, tcx: TyCtxt) {
+    pub fn codegen_finished(&self, tcx: TyCtxt<'_, '_, '_>) {
         self.wait_for_signal_to_codegen_item();
         self.check_for_errors(tcx.sess);
         drop(self.coordinator_send.send(Box::new(Message::CodegenComplete::<B>)));
@@ -1871,7 +1871,7 @@ impl<B: ExtraBackendMethods> OngoingCodegen<B> {
 
 pub fn submit_codegened_module_to_llvm<B: ExtraBackendMethods>(
     _backend: &B,
-    tcx: TyCtxt,
+    tcx: TyCtxt<'_, '_, '_>,
     module: ModuleCodegen<B::Module>,
     cost: u64
 ) {
@@ -1884,7 +1884,7 @@ pub fn submit_codegened_module_to_llvm<B: ExtraBackendMethods>(
 
 pub fn submit_post_lto_module_to_llvm<B: ExtraBackendMethods>(
     _backend: &B,
-    tcx: TyCtxt,
+    tcx: TyCtxt<'_, '_, '_>,
     module: CachedModuleCodegen
 ) {
     let llvm_work_item = WorkItem::CopyPostLtoArtifacts(module);
@@ -1896,7 +1896,7 @@ pub fn submit_post_lto_module_to_llvm<B: ExtraBackendMethods>(
 
 pub fn submit_pre_lto_module_to_llvm<B: ExtraBackendMethods>(
     _backend: &B,
-    tcx: TyCtxt,
+    tcx: TyCtxt<'_, '_, '_>,
     module: CachedModuleCodegen
 ) {
     let filename = pre_lto_bitcode_filename(&module.name);
@@ -1921,7 +1921,7 @@ pub fn pre_lto_bitcode_filename(module_name: &str) -> String {
     format!("{}.{}", module_name, PRE_LTO_BC_EXT)
 }
 
-fn msvc_imps_needed(tcx: TyCtxt) -> bool {
+fn msvc_imps_needed(tcx: TyCtxt<'_, '_, '_>) -> bool {
     // This should never be true (because it's not supported). If it is true,
     // something is wrong with commandline arg validation.
     assert!(!(tcx.sess.opts.cg.linker_plugin_lto.enabled() &&

src/librustc_codegen_ssa/base.rs

@@ -370,7 +370,7 @@ pub fn from_immediate<'a, 'tcx: 'a, Bx: BuilderMethods<'a, 'tcx>>(
 pub fn to_immediate<'a, 'tcx: 'a, Bx: BuilderMethods<'a, 'tcx>>(
     bx: &mut Bx,
     val: Bx::Value,
-    layout: layout::TyLayout,
+    layout: layout::TyLayout<'_>,
 ) -> Bx::Value {
     if let layout::Abi::Scalar(ref scalar) = layout.abi {
         return to_immediate_scalar(bx, val, scalar);
@@ -802,7 +802,7 @@ fn assert_and_save_dep_graph<'ll, 'tcx>(tcx: TyCtxt<'ll, 'tcx, 'tcx>) {
 }
 
 impl CrateInfo {
-    pub fn new(tcx: TyCtxt) -> CrateInfo {
+    pub fn new(tcx: TyCtxt<'_, '_, '_>) -> CrateInfo {
         let mut info = CrateInfo {
             panic_runtime: None,
             compiler_builtins: None,
@@ -880,7 +880,7 @@ impl CrateInfo {
         return info
     }
 
-    fn load_wasm_imports(&mut self, tcx: TyCtxt, cnum: CrateNum) {
+    fn load_wasm_imports(&mut self, tcx: TyCtxt<'_, '_, '_>, cnum: CrateNum) {
         self.wasm_imports.extend(tcx.wasm_import_module_map(cnum).iter().map(|(&id, module)| {
             let instance = Instance::mono(tcx, id);
             let import_name = tcx.symbol_name(instance);
@@ -890,13 +890,13 @@ impl CrateInfo {
     }
 }
 
-fn is_codegened_item(tcx: TyCtxt, id: DefId) -> bool {
+fn is_codegened_item(tcx: TyCtxt<'_, '_, '_>, id: DefId) -> bool {
     let (all_mono_items, _) =
         tcx.collect_and_partition_mono_items(LOCAL_CRATE);
     all_mono_items.contains(&id)
 }
 
-pub fn provide_both(providers: &mut Providers) {
+pub fn provide_both(providers: &mut Providers<'_>) {
     providers.backend_optimization_level = |tcx, cratenum| {
         let for_speed = match tcx.sess.opts.optimize {
             // If globally no optimisation is done, #[optimize] has no effect.

src/librustc_codegen_ssa/common.rs

@@ -134,7 +134,7 @@ mod temp_stable_hash_impls {
     }
 }
 
-pub fn langcall(tcx: TyCtxt,
+pub fn langcall(tcx: TyCtxt<'_, '_, '_>,
                 span: Option<Span>,
                 msg: &str,
                 li: LangItem)

src/librustc_codegen_ssa/lib.rs

@@ -11,7 +11,6 @@
 #![allow(dead_code)]
 #![deny(rust_2018_idioms)]
 #![allow(explicit_outlives_requirements)]
-#![allow(elided_lifetimes_in_paths)]
 
 #![recursion_limit="256"]
 

src/librustc_codegen_ssa/mir/operand.rs

@@ -48,7 +48,7 @@ pub struct OperandRef<'tcx, V> {
 }
 
 impl<V: CodegenObject> fmt::Debug for OperandRef<'tcx, V> {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(f, "OperandRef({:?} @ {:?})", self.val, self.layout)
     }
 }

src/librustc_codegen_ssa/traits/backend.rs

@@ -32,13 +32,18 @@ impl<'tcx, T> Backend<'tcx> for T where
 }
 
 pub trait ExtraBackendMethods: CodegenBackend + WriteBackendMethods + Sized + Send {
-    fn new_metadata(&self, sess: TyCtxt, mod_name: &str) -> Self::Module;
+    fn new_metadata(&self, sess: TyCtxt<'_, '_, '_>, mod_name: &str) -> Self::Module;
     fn write_metadata<'b, 'gcx>(
         &self,
         tcx: TyCtxt<'b, 'gcx, 'gcx>,
         metadata: &mut Self::Module,
     ) -> EncodedMetadata;
-    fn codegen_allocator(&self, tcx: TyCtxt, mods: &mut Self::Module, kind: AllocatorKind);
+    fn codegen_allocator(
+        &self,
+        tcx: TyCtxt<'_, '_, '_>,
+        mods: &mut Self::Module,
+        kind: AllocatorKind
+    );
     fn compile_codegen_unit<'a, 'tcx: 'a>(
         &self,
         tcx: TyCtxt<'a, 'tcx, 'tcx>,

src/librustc_codegen_ssa/traits/builder.rs

@@ -100,7 +100,7 @@ pub trait BuilderMethods<'a, 'tcx: 'a>:
     fn checked_binop(
         &mut self,
         oop: OverflowOp,
-        ty: Ty,
+        ty: Ty<'_>,
         lhs: Self::Value,
         rhs: Self::Value,
     ) -> (Self::Value, Self::Value);

src/librustc_codegen_ssa/traits/debuginfo.rs

@@ -22,12 +22,12 @@ pub trait DebugInfoMethods<'tcx>: BackendTypes {
         instance: Instance<'tcx>,
         sig: ty::FnSig<'tcx>,
         llfn: Self::Value,
-        mir: &mir::Mir,
+        mir: &mir::Mir<'_>,
     ) -> FunctionDebugContext<Self::DIScope>;
 
     fn create_mir_scopes(
         &self,
-        mir: &mir::Mir,
+        mir: &mir::Mir<'_>,
         debug_context: &FunctionDebugContext<Self::DIScope>,
     ) -> IndexVec<mir::SourceScope, MirDebugScope<Self::DIScope>>;
     fn extend_scope_to_file(