bjoernager/rust
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Delete Rvalue::Len

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Everything's moved to `PtrMetadata` instead.
This commit is contained in:
Scott McMurray 2024-12-13 17:43:16 -08:00
parent b22856d192
commit 5ba54c9e31
36 changed files with 50 additions and 271 deletions
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1
compiler/rustc_middle/src/mir/pretty.rs
View file

@ -1068,7 +1068,6 @@ impl<'tcx> Debug for Rvalue<'tcx> {
pretty_print_const(b, fmt, false)?;
write!(fmt, "]")
}
Len(ref a) => write!(fmt, "Len({a:?})"),
Cast(ref kind, ref place, ref ty) => {
with_no_trimmed_paths!(write!(fmt, "{place:?} as {ty} ({kind:?})"))
}

1
compiler/rustc_middle/src/mir/statement.rs
View file

@ -424,7 +424,6 @@ impl<'tcx> Rvalue<'tcx> {
| Rvalue::Ref(_, _, _)
| Rvalue::ThreadLocalRef(_)
| Rvalue::RawPtr(_, _)
| Rvalue::Len(_)
| Rvalue::Cast(
CastKind::IntToInt
| CastKind::FloatToInt

10
compiler/rustc_middle/src/mir/syntax.rs
View file

@ -1351,16 +1351,6 @@ pub enum Rvalue<'tcx> {
/// model.
RawPtr(Mutability, Place<'tcx>),
/// Yields the length of the place, as a `usize`.
///
/// If the type of the place is an array, this is the array length. For slices (`[T]`, not
/// `&[T]`) this accesses the place's metadata to determine the length. This rvalue is
/// ill-formed for places of other types.
///
/// This cannot be a `UnOp(PtrMetadata, _)` because that expects a value, and we only
/// have a place, and `UnOp(PtrMetadata, RawPtr(place))` is not a thing.
Len(Place<'tcx>),
/// Performs essentially all of the casts that can be performed via `as`.
///
/// This allows for casts from/to a variety of types.

1
compiler/rustc_middle/src/mir/tcx.rs
View file

@ -175,7 +175,6 @@ impl<'tcx> Rvalue<'tcx> {
let place_ty = place.ty(local_decls, tcx).ty;
Ty::new_ptr(tcx, place_ty, mutability)
}
Rvalue::Len(..) => tcx.types.usize,
Rvalue::Cast(.., ty) => ty,
Rvalue::BinaryOp(op, box (ref lhs, ref rhs)) => {
let lhs_ty = lhs.ty(local_decls, tcx);

8
compiler/rustc_middle/src/mir/visit.rs
View file

@ -695,14 +695,6 @@ macro_rules! make_mir_visitor {
self.visit_place(path, ctx, location);
}
Rvalue::Len(path) => {
self.visit_place(
path,
PlaceContext::NonMutatingUse(NonMutatingUseContext::Inspect),
location
);
}
Rvalue::Cast(_cast_kind, operand, ty) => {
self.visit_operand(operand, location);
self.visit_ty($(& $mutability)? *ty, TyContext::Location(location));