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fix typos & docs

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This commit is contained in:
DrMeepster 2022-05-14 14:08:29 -07:00
parent 954fbe35e1
commit e0b0fb0af7
1 changed files with 7 additions and 6 deletions
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13
compiler/rustc_mir_transform/src/elaborate_box_derefs.rs
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@ -1,5 +1,6 @@
//! This pass transforms derefs of Box into a deref of the pointer inside Box //! This pass transforms derefs of Box into a deref of the pointer inside Box.
//! Codegen does not allow box to be directly dereferenced //!
//! Box is not actually a pointer so it is incorrect to dereference it directly.
use crate::MirPass; use crate::MirPass;
use rustc_hir::def_id::DefId; use rustc_hir::def_id::DefId;
@ -10,7 +11,7 @@ use rustc_middle::mir::*;
use rustc_middle::ty::subst::Subst; use rustc_middle::ty::subst::Subst;
use rustc_middle::ty::TyCtxt; use rustc_middle::ty::TyCtxt;
struct ElaborateBoxDerefVistor<'tcx, 'a> { struct ElaborateBoxDerefVisitor<'tcx, 'a> {
tcx: TyCtxt<'tcx>, tcx: TyCtxt<'tcx>,
unique_did: DefId, unique_did: DefId,
nonnull_did: DefId, nonnull_did: DefId,
@ -18,7 +19,7 @@ struct ElaborateBoxDerefVistor<'tcx, 'a> {
patch: MirPatch<'tcx>, patch: MirPatch<'tcx>,
} }
impl<'tcx, 'a> MutVisitor<'tcx> for ElaborateBoxDerefVistor<'tcx, 'a> { impl<'tcx, 'a> MutVisitor<'tcx> for ElaborateBoxDerefVisitor<'tcx, 'a> {
fn tcx(&self) -> TyCtxt<'tcx> { fn tcx(&self) -> TyCtxt<'tcx> {
self.tcx self.tcx
} }
@ -90,7 +91,7 @@ impl<'tcx> MirPass<'tcx> for ElaborateBoxDerefs {
let (basic_blocks, local_decls) = body.basic_blocks_and_local_decls_mut(); let (basic_blocks, local_decls) = body.basic_blocks_and_local_decls_mut();
let mut visitor = let mut visitor =
ElaborateBoxDerefVistor { tcx, unique_did, nonnull_did, local_decls, patch }; ElaborateBoxDerefVisitor { tcx, unique_did, nonnull_did, local_decls, patch };
for (block, BasicBlockData { statements, terminator, .. }) in for (block, BasicBlockData { statements, terminator, .. }) in
basic_blocks.iter_enumerated_mut() basic_blocks.iter_enumerated_mut()
@ -111,7 +112,7 @@ impl<'tcx> MirPass<'tcx> for ElaborateBoxDerefs {
let location = Location { block, statement_index: index }; let location = Location { block, statement_index: index };
match terminator { match terminator {
// yielding into a box is handed when lowering generators // yielding into a box is handled when lowering generators
Some(Terminator { kind: TerminatorKind::Yield { value, .. }, .. }) => { Some(Terminator { kind: TerminatorKind::Yield { value, .. }, .. }) => {
visitor.visit_operand(value, location); visitor.visit_operand(value, location);
} }