fix few typos

compiler/rustc_mir/src/transform/check_consts/qualifs.rs

@@ -29,11 +29,11 @@ pub fn in_any_value_of_ty(
 /// Normally, we would determine what qualifications apply to each type and error when an illegal
 /// operation is performed on such a type. However, this was found to be too imprecise, especially
 /// in the presence of `enum`s. If only a single variant of an enum has a certain qualification, we
-/// needn't reject code unless it actually constructs and operates on the qualifed variant.
+/// needn't reject code unless it actually constructs and operates on the qualified variant.
 ///
 /// To accomplish this, const-checking and promotion use a value-based analysis (as opposed to a
 /// type-based one). Qualifications propagate structurally across variables: If a local (or a
-/// projection of a local) is assigned a qualifed value, that local itself becomes qualifed.
+/// projection of a local) is assigned a qualified value, that local itself becomes qualified.
 pub trait Qualif {
     /// The name of the file used to debug the dataflow analysis that computes this qualif.
     const ANALYSIS_NAME: &'static str;

compiler/rustc_mir/src/transform/coverage/debug.rs

@@ -816,7 +816,7 @@ fn bcb_to_string_sections(
     sections
 }
 
-/// Returns a simple string representation of a `TerminatorKind` variant, indenpendent of any
+/// Returns a simple string representation of a `TerminatorKind` variant, independent of any
 /// values it might hold.
 pub(super) fn term_type(kind: &TerminatorKind<'tcx>) -> &'static str {
     match kind {

compiler/rustc_mir/src/transform/coverage/tests.rs

@@ -17,7 +17,7 @@
 //! Also note, some basic features of `Span` also rely on the `Span`s own "session globals", which
 //! are unrelated to the `TyCtxt` global. Without initializing the `Span` session globals, some
 //! basic, coverage-specific features would be impossible to test, but thankfully initializing these
-//! globals is comparitively simpler. The easiest way is to wrap the test in a closure argument
+//! globals is comparatively simpler. The easiest way is to wrap the test in a closure argument
 //! to: `rustc_span::with_default_session_globals(|| { test_here(); })`.
 
 use super::counters;