bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Revert "Auto merge of #134330 - scottmcm:no-more-rvalue-len, r=matthewjasper"

Browse source 
This reverts commit e108481f74, reversing
changes made to 303e8bd768.
This commit is contained in:
Rémy Rakic 2025-01-18 22:08:38 +00:00
parent efc25761e5
commit ca1c17c88d
37 changed files with 272 additions and 51 deletions
Download patch file Download diff file Expand all files Collapse all files

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

@ -1351,6 +1351,16 @@ 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.