Fix some typos

Signed-off-by: cui fliter <imcusg@gmail.com>

compiler/rustc_codegen_llvm/src/callee.rs

@@ -59,7 +59,7 @@ pub fn get_fn<'ll, 'tcx>(cx: &CodegenCx<'ll, 'tcx>, instance: Instance<'tcx>) ->
             // To avoid this, we set the Storage Class to "DllImport" so that
             // LLVM will prefix the name with `__imp_`. Ideally, we'd like the
             // existing logic below to set the Storage Class, but it has an
-            // exemption for MinGW for backwards compatability.
+            // exemption for MinGW for backwards compatibility.
             let llfn = cx.declare_fn(
                 &common::i686_decorated_name(
                     &dllimport,

compiler/rustc_const_eval/src/interpret/discriminant.rs

@@ -119,7 +119,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
                     if matches!(ty.kind(), ty::Adt(def, ..) if def.variants().is_empty()) {
                         throw_ub!(UninhabitedEnumVariantRead(index))
                     }
-                    // For consisteny with `write_discriminant`, and to make sure that
+                    // For consistency with `write_discriminant`, and to make sure that
                     // `project_downcast` cannot fail due to strange layouts, we declare immediate UB
                     // for uninhabited variants.
                     if op.layout().for_variant(self, index).abi.is_uninhabited() {
@@ -236,7 +236,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
                 variant
             }
         };
-        // For consisteny with `write_discriminant`, and to make sure that `project_downcast` cannot fail due to strange layouts, we declare immediate UB for uninhabited variants.
+        // For consistency with `write_discriminant`, and to make sure that `project_downcast` cannot fail due to strange layouts, we declare immediate UB for uninhabited variants.
         if op.layout().for_variant(self, index).abi.is_uninhabited() {
             throw_ub!(UninhabitedEnumVariantRead(index))
         }

compiler/rustc_data_structures/src/sharded.rs

@@ -79,7 +79,7 @@ impl<T> Sharded<T> {
     pub fn lock_shard_by_value<K: Hash + ?Sized>(&self, _val: &K) -> LockGuard<'_, T> {
         match self {
             Self::Single(single) => {
-                // Syncronization is disabled so use the `lock_assume_no_sync` method optimized
+                // Synchronization is disabled so use the `lock_assume_no_sync` method optimized
                 // for that case.
 
                 // SAFETY: We know `is_dyn_thread_safe` was false when creating the lock thus
@@ -102,7 +102,7 @@ impl<T> Sharded<T> {
     pub fn lock_shard_by_index(&self, _i: usize) -> LockGuard<'_, T> {
         match self {
             Self::Single(single) => {
-                // Syncronization is disabled so use the `lock_assume_no_sync` method optimized
+                // Synchronization is disabled so use the `lock_assume_no_sync` method optimized
                 // for that case.
 
                 // SAFETY: We know `is_dyn_thread_safe` was false when creating the lock thus
@@ -111,7 +111,7 @@ impl<T> Sharded<T> {
             }
             #[cfg(parallel_compiler)]
             Self::Shards(shards) => {
-                // Syncronization is enabled so use the `lock_assume_sync` method optimized
+                // Synchronization is enabled so use the `lock_assume_sync` method optimized
                 // for that case.
 
                 // SAFETY (get_unchecked): The index gets ANDed with the shard mask, ensuring it is

compiler/rustc_data_structures/src/sync/lock.rs

@@ -38,7 +38,7 @@ mod maybe_sync {
         lock: &'a Lock<T>,
         marker: PhantomData<&'a mut T>,
 
-        /// The syncronization mode of the lock. This is explicitly passed to let LLVM relate it
+        /// The synchronization mode of the lock. This is explicitly passed to let LLVM relate it
         /// to the original lock operation.
         mode: Mode,
     }
@@ -142,7 +142,7 @@ mod maybe_sync {
             .then(|| LockGuard { lock: self, marker: PhantomData, mode })
         }
 
-        /// This acquires the lock assuming syncronization is in a specific mode.
+        /// This acquires the lock assuming synchronization is in a specific mode.
         ///
         /// Safety
         /// This method must only be called with `Mode::Sync` if `might_be_dyn_thread_safe` was

compiler/rustc_errors/src/markdown/parse.rs

@@ -329,7 +329,7 @@ fn parse_with_end_pat<'a>(
     end_sep: &[u8],
     ignore_esc: bool,
 ) -> Option<(&'a [u8], &'a [u8])> {
-    // Find positions that start with the end seperator
+    // Find positions that start with the end separator
     for idx in (0..buf.len()).filter(|idx| buf[*idx..].starts_with(end_sep)) {
         if !ignore_esc && idx > 0 && buf[idx - 1] == b'\\' {
             continue;

compiler/rustc_lint/src/reference_casting.rs

@@ -155,7 +155,7 @@ fn is_cast_from_const_to_mut<'tcx>(
 
     let start_ty = cx.typeck_results().node_type(e.hir_id);
     if let ty::Ref(_, inner_ty, Mutability::Not) = start_ty.kind() {
-        // If an UnsafeCell method is involved we need to additionaly check the
+        // If an UnsafeCell method is involved we need to additionally check the
         // inner type for the presence of the Freeze trait (ie does NOT contain
         // an UnsafeCell), since in that case we would incorrectly lint on valid casts.
         //

compiler/rustc_parse/src/parser/ty.rs

@@ -135,7 +135,7 @@ impl<'a> Parser<'a> {
         )
     }
 
-    /// Parse a type suitable for a field defintion.
+    /// Parse a type suitable for a field definition.
     /// The difference from `parse_ty` is that this version
     /// allows anonymous structs and unions.
     pub fn parse_ty_for_field_def(&mut self) -> PResult<'a, P<Ty>> {

compiler/rustc_passes/src/dead.rs

@@ -314,7 +314,7 @@ impl<'tcx> MarkSymbolVisitor<'tcx> {
                 // for the `#[expect]` case.
                 //
                 // Note that an item can and will be duplicated on the worklist with different
-                // `ComesFromAllowExpect`, particulary if it was added from the
+                // `ComesFromAllowExpect`, particularly if it was added from the
                 // `effective_visibilities` query or from the `#[allow]`/`#[expect]` checks,
                 // this "duplication" is essential as otherwise a function with `#[expect]`
                 // called from a `pub fn` may be falsely reported as not live, falsely

compiler/rustc_privacy/src/lib.rs

@@ -1756,7 +1756,7 @@ impl<'tcx> PrivateItemsInPublicInterfacesChecker<'tcx, '_> {
                     //     fn from(_: Priv) -> Pub {...}
                     // }
                     //
-                    // lints shouldn't be emmited even if `from` effective visibility
+                    // lints shouldn't be emitted even if `from` effective visibility
                     // is larger than `Priv` nominal visibility and if `Priv` can leak
                     // in some scenarios due to type inference.
                     let impl_ev = EffectiveVisibility::of_impl::<false>(