Clean up formatting.

Reflow overly long comments, plus some minor whitespace improvements.

4 files changed, 21 insertions, 17 deletions

diff --git a/compiler/rustc_codegen_ssa/src/mir/block.rs b/compiler/rustc_codegen_ssa/src/mir/block.rs
index e27d53baf0f..fc7b2aba5ee 100644
--- a/compiler/rustc_codegen_ssa/src/mir/block.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/block.rs
@@ -996,7 +996,8 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                         // To get a `*mut RcBox<Self>`, we just keep unwrapping newtypes until
                         // we get a value of a built-in pointer type.
                         //
-                        // This is also relevant for `Pin<&mut Self>`, where we need to peel the `Pin`.
+                        // This is also relevant for `Pin<&mut Self>`, where we need to peel the
+                        // `Pin`.
                         while !op.layout.ty.is_unsafe_ptr() && !op.layout.ty.is_ref() {
                             let (idx, _) = op.layout.non_1zst_field(bx).expect(
                                 "not exactly one non-1-ZST field in a `DispatchFromDyn` type",
@@ -1004,9 +1005,9 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                             op = op.extract_field(bx, idx);
                         }
 
-                        // now that we have `*dyn Trait` or `&dyn Trait`, split it up into its
+                        // Now that we have `*dyn Trait` or `&dyn Trait`, split it up into its
                         // data pointer and vtable. Look up the method in the vtable, and pass
-                        // the data pointer as the first argument
+                        // the data pointer as the first argument.
                         llfn = Some(meth::VirtualIndex::from_index(idx).get_fn(
                             bx,
                             meta,
@@ -1440,8 +1441,9 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
         let (mut llval, align, by_ref) = match op.val {
             Immediate(_) | Pair(..) => match arg.mode {
                 PassMode::Indirect { attrs, .. } => {
-                    // Indirect argument may have higher alignment requirements than the type's alignment.
-                    // This can happen, e.g. when passing types with <4 byte alignment on the stack on x86.
+                    // Indirect argument may have higher alignment requirements than the type's
+                    // alignment. This can happen, e.g. when passing types with <4 byte alignment
+                    // on the stack on x86.
                     let required_align = match attrs.pointee_align {
                         Some(pointee_align) => cmp::max(pointee_align, arg.layout.align.abi),
                         None => arg.layout.align.abi,
diff --git a/compiler/rustc_codegen_ssa/src/mir/constant.rs b/compiler/rustc_codegen_ssa/src/mir/constant.rs
index 3f8ddfe1fe7..15f45b226f5 100644
--- a/compiler/rustc_codegen_ssa/src/mir/constant.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/constant.rs
@@ -32,7 +32,8 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
     /// that the given `constant` is an `Const::Unevaluated` and must be convertible to
     /// a `ValTree`. If you want a more general version of this, talk to `wg-const-eval` on zulip.
     ///
-    /// Note that this function is cursed, since usually MIR consts should not be evaluated to valtrees!
+    /// Note that this function is cursed, since usually MIR consts should not be evaluated to
+    /// valtrees!
     fn eval_unevaluated_mir_constant_to_valtree(
         &self,
         constant: &mir::ConstOperand<'tcx>,
@@ -40,19 +41,19 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
         let uv = match self.monomorphize(constant.const_) {
             mir::Const::Unevaluated(uv, _) => uv.shrink(),
             mir::Const::Ty(_, c) => match c.kind() {
-                // A constant that came from a const generic but was then used as an argument to old-style
-                // simd_shuffle (passing as argument instead of as a generic param).
+                // A constant that came from a const generic but was then used as an argument to
+                // old-style simd_shuffle (passing as argument instead of as a generic param).
                 rustc_type_ir::ConstKind::Value(_, valtree) => return Ok(Ok(valtree)),
                 other => span_bug!(constant.span, "{other:#?}"),
             },
             // We should never encounter `Const::Val` unless MIR opts (like const prop) evaluate
-            // a constant and write that value back into `Operand`s. This could happen, but is unlikely.
-            // Also: all users of `simd_shuffle` are on unstable and already need to take a lot of care
-            // around intrinsics. For an issue to happen here, it would require a macro expanding to a
-            // `simd_shuffle` call without wrapping the constant argument in a `const {}` block, but
-            // the user pass through arbitrary expressions.
-            // FIXME(oli-obk): replace the magic const generic argument of `simd_shuffle` with a real
-            // const generic, and get rid of this entire function.
+            // a constant and write that value back into `Operand`s. This could happen, but is
+            // unlikely. Also: all users of `simd_shuffle` are on unstable and already need to take
+            // a lot of care around intrinsics. For an issue to happen here, it would require a
+            // macro expanding to a `simd_shuffle` call without wrapping the constant argument in a
+            // `const {}` block, but the user pass through arbitrary expressions.
+            // FIXME(oli-obk): replace the magic const generic argument of `simd_shuffle` with a
+            // real const generic, and get rid of this entire function.
             other => span_bug!(constant.span, "{other:#?}"),
         };
         let uv = self.monomorphize(uv);
diff --git a/compiler/rustc_codegen_ssa/src/mir/debuginfo.rs b/compiler/rustc_codegen_ssa/src/mir/debuginfo.rs
index cfffc09ecbc..5b36a11aa25 100644
--- a/compiler/rustc_codegen_ssa/src/mir/debuginfo.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/debuginfo.rs
@@ -24,6 +24,7 @@ pub struct FunctionDebugContext<'tcx, S, L> {
     /// Maps from an inlined function to its debug info declaration.
     pub inlined_function_scopes: FxHashMap<Instance<'tcx>, S>,
 }
+
 #[derive(Copy, Clone)]
 pub enum VariableKind {
     ArgumentVariable(usize /*index*/),
diff --git a/compiler/rustc_codegen_ssa/src/mir/operand.rs b/compiler/rustc_codegen_ssa/src/mir/operand.rs
index f0f93f8c6cb..8afd5e867b5 100644
--- a/compiler/rustc_codegen_ssa/src/mir/operand.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/operand.rs
@@ -478,8 +478,8 @@ impl<'a, 'tcx, V: CodegenObject> OperandValue<V> {
         debug!("OperandRef::store: operand={:?}, dest={:?}", self, dest);
         match self {
             OperandValue::ZeroSized => {
-                // Avoid generating stores of zero-sized values, because the only way to have a zero-sized
-                // value is through `undef`/`poison`, and the store itself is useless.
+                // Avoid generating stores of zero-sized values, because the only way to have a
+                // zero-sized value is through `undef`/`poison`, and the store itself is useless.
             }
             OperandValue::Ref(val) => {
                 assert!(dest.layout.is_sized(), "cannot directly store unsized values");