Rollup merge of #129877 - Sajjon:sajjon_fix_typos_batch_2, r=fee1-dead

chore: Fix typos in 'compiler' (batch 2)

Batch 2/3: Fixes typos in `compiler`

(See [issue](https://github.com/rust-lang/rust/issues/129874) tracking all PRs with typos fixes)

compiler/rustc_mir_transform/src/dead_store_elimination.rs

@@ -32,7 +32,7 @@ pub fn eliminate<'tcx>(tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
     let borrowed_locals = borrowed_locals(body);
 
     // If the user requests complete debuginfo, mark the locals that appear in it as live, so
-    // we don't remove assignements to them.
+    // we don't remove assignments to them.
     let mut always_live = debuginfo_locals(body);
     always_live.union(&borrowed_locals);
 

compiler/rustc_mir_transform/src/dest_prop.rs

@@ -38,7 +38,7 @@
 //!   not contain any indirection through a pointer or any indexing projections.
 //!
 //! * `p` and `q` must have the **same type**. If we replace a local with a subtype or supertype,
-//!   we may end up with a differnet vtable for that local. See the `subtyping-impacts-selection`
+//!   we may end up with a different vtable for that local. See the `subtyping-impacts-selection`
 //!   tests for an example where that causes issues.
 //!
 //! * We need to make sure that the goal of "merging the memory" is actually structurally possible

compiler/rustc_mir_transform/src/known_panics_lint.rs

@@ -914,7 +914,7 @@ impl<'tcx> Visitor<'tcx> for CanConstProp {
     fn visit_place(&mut self, place: &Place<'tcx>, mut context: PlaceContext, loc: Location) {
         use rustc_middle::mir::visit::PlaceContext::*;
 
-        // Dereferencing just read the addess of `place.local`.
+        // Dereferencing just read the address of `place.local`.
         if place.projection.first() == Some(&PlaceElem::Deref) {
             context = NonMutatingUse(NonMutatingUseContext::Copy);
         }

compiler/rustc_mir_transform/src/match_branches.rs

@@ -289,7 +289,7 @@ fn can_cast(
 
 #[derive(Default)]
 struct SimplifyToExp {
-    transfrom_kinds: Vec<TransfromKind>,
+    transform_kinds: Vec<TransformKind>,
 }
 
 #[derive(Clone, Copy)]
@@ -302,17 +302,17 @@ enum ExpectedTransformKind<'tcx, 'a> {
     Cast { place: &'a Place<'tcx>, ty: Ty<'tcx> },
 }
 
-enum TransfromKind {
+enum TransformKind {
     Same,
     Cast,
 }
 
-impl From<ExpectedTransformKind<'_, '_>> for TransfromKind {
+impl From<ExpectedTransformKind<'_, '_>> for TransformKind {
     fn from(compare_type: ExpectedTransformKind<'_, '_>) -> Self {
         match compare_type {
-            ExpectedTransformKind::Same(_) => TransfromKind::Same,
-            ExpectedTransformKind::SameByEq { .. } => TransfromKind::Same,
-            ExpectedTransformKind::Cast { .. } => TransfromKind::Cast,
+            ExpectedTransformKind::Same(_) => TransformKind::Same,
+            ExpectedTransformKind::SameByEq { .. } => TransformKind::Same,
+            ExpectedTransformKind::Cast { .. } => TransformKind::Cast,
         }
     }
 }
@@ -475,7 +475,7 @@ impl<'tcx> SimplifyMatch<'tcx> for SimplifyToExp {
                 }
             }
         }
-        self.transfrom_kinds = expected_transform_kinds.into_iter().map(|c| c.into()).collect();
+        self.transform_kinds = expected_transform_kinds.into_iter().map(|c| c.into()).collect();
         Some(())
     }
 
@@ -493,13 +493,13 @@ impl<'tcx> SimplifyMatch<'tcx> for SimplifyToExp {
         let (_, first) = targets.iter().next().unwrap();
         let first = &bbs[first];
 
-        for (t, s) in iter::zip(&self.transfrom_kinds, &first.statements) {
+        for (t, s) in iter::zip(&self.transform_kinds, &first.statements) {
             match (t, &s.kind) {
-                (TransfromKind::Same, _) => {
+                (TransformKind::Same, _) => {
                     patch.add_statement(parent_end, s.kind.clone());
                 }
                 (
-                    TransfromKind::Cast,
+                    TransformKind::Cast,
                     StatementKind::Assign(box (lhs, Rvalue::Use(Operand::Constant(f_c)))),
                 ) => {
                     let operand = Operand::Copy(Place::from(discr_local));

compiler/rustc_mir_transform/src/promote_consts.rs

@@ -498,7 +498,7 @@ impl<'tcx> Validator<'_, 'tcx> {
                                 Some(x) if x != 0 => {}        // okay
                                 _ => return Err(Unpromotable), // value not known or 0 -- not okay
                             }
-                            // Furthermore, for signed divison, we also have to exclude `int::MIN / -1`.
+                            // Furthermore, for signed division, we also have to exclude `int::MIN / -1`.
                             if lhs_ty.is_signed() {
                                 match rhs_val.map(|x| x.to_int(sz)) {
                                     Some(-1) | None => {

compiler/rustc_mir_transform/src/ref_prop.rs

@@ -345,7 +345,7 @@ fn fully_replacable_locals(ssa: &SsaLocals) -> BitSet<Local> {
     replacable
 }
 
-/// Utility to help performing subtitution of `*pattern` by `target`.
+/// Utility to help performing substitution of `*pattern` by `target`.
 struct Replacer<'tcx> {
     tcx: TyCtxt<'tcx>,
     targets: IndexVec<Local, Value<'tcx>>,