Spellchecking compiler comments

This PR cleans up the rest of the spelling mistakes in the compiler comments. This PR does not change any literal or code spelling issues.

compiler/rustc_infer/src/infer/canonical/query_response.rs

@@ -2,7 +2,7 @@
 //! in particular to extract out the resulting region obligations and
 //! encode them therein.
 //!
-//! For an overview of what canonicaliation is and how it fits into
+//! For an overview of what canonicalization is and how it fits into
 //! rustc, check out the [chapter in the rustc dev guide][c].
 //!
 //! [c]: https://rust-lang.github.io/chalk/book/canonical_queries/canonicalization.html

compiler/rustc_infer/src/infer/error_reporting/mod.rs

@@ -1164,7 +1164,7 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> {
                     let len = sub1.len() - common_default_params;
                     let consts_offset = len - sub1.consts().count();
 
-                    // Only draw `<...>` if there're lifetime/type arguments.
+                    // Only draw `<...>` if there are lifetime/type arguments.
                     if len > 0 {
                         values.0.push_normal("<");
                         values.1.push_normal("<");
@@ -1245,7 +1245,7 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> {
                     }
 
                     // Close the type argument bracket.
-                    // Only draw `<...>` if there're lifetime/type arguments.
+                    // Only draw `<...>` if there are lifetime/type arguments.
                     if len > 0 {
                         values.0.push_normal(">");
                         values.1.push_normal(">");
@@ -1857,7 +1857,7 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> {
                     })
                     .transpose();
                 if output.is_some() {
-                    // We don't account for multiple `Future::Output = Ty` contraints.
+                    // We don't account for multiple `Future::Output = Ty` constraints.
                     return output;
                 }
             }

compiler/rustc_infer/src/infer/lattice.rs

@@ -83,7 +83,7 @@ where
         // But if we did in reverse order, we would create a `v <:
         // LHS` (or vice versa) constraint and then instantiate
         // `v`. This would require further processing to achieve same
-        // end-result; in partiular, this screws up some of the logic
+        // end-result; in particular, this screws up some of the logic
         // in coercion, which expects LUB to figure out that the LHS
         // is (e.g.) `Box<i32>`. A more obvious solution might be to
         // iterate on the subtype obligations that are returned, but I

compiler/rustc_infer/src/infer/mod.rs

@@ -343,7 +343,7 @@ pub struct InferCtxt<'a, 'tcx> {
 
     /// Track how many errors were reported when this infcx is created.
     /// If the number of errors increases, that's also a sign (line
-    /// `tained_by_errors`) to avoid reporting certain kinds of errors.
+    /// `tainted_by_errors`) to avoid reporting certain kinds of errors.
     // FIXME(matthewjasper) Merge into `tainted_by_errors_flag`
     err_count_on_creation: usize,
 

compiler/rustc_infer/src/infer/nll_relate/mod.rs

@@ -550,7 +550,7 @@ where
         }
 
         if a == b {
-            // Subtle: if a or b has a bound variable that we are lazilly
+            // Subtle: if a or b has a bound variable that we are lazily
             // substituting, then even if a == b, it could be that the values we
             // will substitute for those bound variables are *not* the same, and
             // hence returning `Ok(a)` is incorrect.

compiler/rustc_infer/src/infer/opaque_types.rs

@@ -306,7 +306,7 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> {
     /// # Constrain regions, not the hidden concrete type
     ///
     /// Note that generating constraints on each region `Rc` is *not*
-    /// the same as generating an outlives constraint on `Tc` iself.
+    /// the same as generating an outlives constraint on `Tc` itself.
     /// For example, if we had a function like this:
     ///
     /// ```rust

compiler/rustc_infer/src/infer/outlives/components.rs

@@ -125,7 +125,7 @@ fn compute_components<'tcx>(
             // regionck more ways to prove that it holds. However,
             // regionck is not (at least currently) prepared to deal with
             // higher-ranked regions that may appear in the
-            // trait-ref. Therefore, if we see any higher-ranke regions,
+            // trait-ref. Therefore, if we see any higher-rank regions,
             // we simply fallback to the most restrictive rule, which
             // requires that `Pi: 'a` for all `i`.
             ty::Projection(ref data) => {

compiler/rustc_infer/src/infer/outlives/env.rs

@@ -93,7 +93,7 @@ impl<'a, 'tcx> OutlivesEnvironment<'tcx> {
         &self.region_bound_pairs_map
     }
 
-    /// This is a hack to support the old-skool regionck, which
+    /// This is a hack to support the old-school regionck, which
     /// processes region constraints from the main function and the
     /// closure together. In that context, when we enter a closure, we
     /// want to be able to "save" the state of the surrounding a

compiler/rustc_infer/src/infer/outlives/obligations.rs

@@ -365,7 +365,7 @@ where
         debug!("projection_must_outlive: approx_env_bounds={:?}", approx_env_bounds);
 
         // Remove outlives bounds that we get from the environment but
-        // which are also deducable from the trait. This arises (cc
+        // which are also deducible from the trait. This arises (cc
         // #55756) in cases where you have e.g., `<T as Foo<'a>>::Item:
         // 'a` in the environment but `trait Foo<'b> { type Item: 'b
         // }` in the trait definition.

compiler/rustc_infer/src/infer/region_constraints/leak_check.rs

@@ -33,7 +33,7 @@ impl<'tcx> RegionConstraintCollector<'_, 'tcx> {
     /// not entirely true. In particular, in the future, we may extend the
     /// environment with implied bounds or other info about how placeholders
     /// relate to regions in outer universes. In that case, `P1: R` for example
-    /// might become solveable.
+    /// might become solvable.
     ///
     /// # Summary of the implementation
     ///
@@ -210,7 +210,7 @@ impl<'me, 'tcx> LeakCheck<'me, 'tcx> {
         // * `scc_placeholder[scc1]` stores the placeholder that `scc1` must
         //   be equal to (if any)
         //
-        // For each succssor `scc2` where `scc1: scc2`:
+        // For each successor `scc2` where `scc1: scc2`:
         //
         // * `scc_placeholder[scc2]` stores some placeholder `P` where
         //   `scc2: P` (if any)
@@ -243,7 +243,7 @@ impl<'me, 'tcx> LeakCheck<'me, 'tcx> {
             // Update minimum universe of scc1.
             self.scc_universes[scc1] = scc1_universe;
 
-            // At this point, `scc_placholder[scc1]` stores the placeholder that
+            // At this point, `scc_placeholder[scc1]` stores the placeholder that
             // `scc1` must be equal to, if any.
             if let Some(scc1_placeholder) = self.scc_placeholders[scc1] {
                 debug!(

compiler/rustc_infer/src/infer/region_constraints/mod.rs

@@ -46,7 +46,7 @@ pub struct RegionConstraintStorage<'tcx> {
     /// exist). This prevents us from making many such regions.
     glbs: CombineMap<'tcx>,
 
-    /// When we add a R1 == R2 constriant, we currently add (a) edges
+    /// When we add a R1 == R2 constraint, we currently add (a) edges
     /// R1 <= R2 and R2 <= R1 and (b) we unify the two regions in this
     /// table. You can then call `opportunistic_resolve_var` early
     /// which will map R1 and R2 to some common region (i.e., either

compiler/rustc_infer/src/infer/resolve.rs

@@ -55,7 +55,7 @@ impl<'a, 'tcx> TypeFolder<'tcx> for OpportunisticVarResolver<'a, 'tcx> {
 
 /// The opportunistic region resolver opportunistically resolves regions
 /// variables to the variable with the least variable id. It is used when
-/// normlizing projections to avoid hitting the recursion limit by creating
+/// normalizing projections to avoid hitting the recursion limit by creating
 /// many versions of a predicate for types that in the end have to unify.
 ///
 /// If you want to resolve type and const variables as well, call