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Make rustc_abi compile on stable again

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This commit is contained in:
Lukas Wirth 2024-10-21 15:10:39 +02:00
parent 7244af6ca3
commit c7e6f1c330
3 changed files with 23 additions and 15 deletions
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20
compiler/rustc_abi/src/callconv.rs
View File

@ -3,18 +3,23 @@ mod abi {
pub(crate) use crate::Variants;
}
#[cfg(feature = "nightly")]
use rustc_macros::HashStable_Generic;
use crate::{Abi, Align, FieldsShape, HasDataLayout, Size, TyAbiInterface, TyAndLayout};
#[cfg(feature = "nightly")]
use crate::{Abi, FieldsShape, TyAbiInterface, TyAndLayout};
use crate::{Align, HasDataLayout, Size};
#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug, HashStable_Generic)]
#[cfg_attr(feature = "nightly", derive(HashStable_Generic))]
#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)]
pub enum RegKind {
Integer,
Float,
Vector,
}
#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug, HashStable_Generic)]
#[cfg_attr(feature = "nightly", derive(HashStable_Generic))]
#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)]
pub struct Reg {
pub kind: RegKind,
pub size: Size,
@ -108,15 +113,8 @@ fn merge(self, other: HomogeneousAggregate) -> Result<HomogeneousAggregate, Hete
}
}
#[cfg(feature = "nightly")]
impl<'a, Ty> TyAndLayout<'a, Ty> {
/// Returns `true` if this is an aggregate type (including a ScalarPair!)
pub fn is_aggregate(&self) -> bool {
match self.abi {
Abi::Uninhabited | Abi::Scalar(_) | Abi::Vector { .. } => false,
Abi::ScalarPair(..) | Abi::Aggregate { .. } => true,
}
}
/// Returns `Homogeneous` if this layout is an aggregate containing fields of
/// only a single type (e.g., `(u32, u32)`). Such aggregates are often
/// special-cased in ABIs.

2
compiler/rustc_abi/src/layout.rs
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@ -11,8 +11,10 @@
Variants, WrappingRange,
};
#[cfg(feature = "nightly")]
mod ty;
#[cfg(feature = "nightly")]
pub use ty::{FIRST_VARIANT, FieldIdx, Layout, TyAbiInterface, TyAndLayout, VariantIdx};
// A variant is absent if it's uninhabited and only has ZST fields.

16
compiler/rustc_abi/src/lib.rs
View File

@ -29,14 +29,14 @@
mod tests;
pub use callconv::{Heterogeneous, HomogeneousAggregate, Reg, RegKind};
pub use layout::{
FIRST_VARIANT, FieldIdx, Layout, LayoutCalculator, LayoutCalculatorError, TyAbiInterface,
TyAndLayout, VariantIdx,
};
#[cfg(feature = "nightly")]
pub use layout::{FIRST_VARIANT, FieldIdx, Layout, TyAbiInterface, TyAndLayout, VariantIdx};
pub use layout::{LayoutCalculator, LayoutCalculatorError};
/// Requirements for a `StableHashingContext` to be used in this crate.
/// This is a hack to allow using the `HashStable_Generic` derive macro
/// instead of implementing everything in `rustc_middle`.
#[cfg(feature = "nightly")]
pub trait HashStableContext {}
#[derive(Clone, Copy, PartialEq, Eq, Default)]
@ -1644,6 +1644,14 @@ pub struct LayoutS<FieldIdx: Idx, VariantIdx: Idx> {
}
impl<FieldIdx: Idx, VariantIdx: Idx> LayoutS<FieldIdx, VariantIdx> {
/// Returns `true` if this is an aggregate type (including a ScalarPair!)
pub fn is_aggregate(&self) -> bool {
match self.abi {
Abi::Uninhabited | Abi::Scalar(_) | Abi::Vector { .. } => false,
Abi::ScalarPair(..) | Abi::Aggregate { .. } => true,
}
}
pub fn scalar<C: HasDataLayout>(cx: &C, scalar: Scalar) -> Self {
let largest_niche = Niche::from_scalar(cx, Size::ZERO, scalar);
let size = scalar.size(cx);