diff options
Diffstat (limited to 'compiler/rustc_abi/src/layout/ty.rs')
| -rw-r--r-- | compiler/rustc_abi/src/layout/ty.rs | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/compiler/rustc_abi/src/layout/ty.rs b/compiler/rustc_abi/src/layout/ty.rs index 4f43c0e6f8e..bb880a58e52 100644 --- a/compiler/rustc_abi/src/layout/ty.rs +++ b/compiler/rustc_abi/src/layout/ty.rs @@ -5,7 +5,7 @@ use rustc_data_structures::intern::Interned; use rustc_macros::HashStable_Generic; use crate::{ - AbiAndPrefAlign, Align, BackendRepr, FieldsShape, Float, HasDataLayout, LayoutData, Niche, + AbiAlign, Align, BackendRepr, FieldsShape, Float, HasDataLayout, LayoutData, Niche, PointeeInfo, Primitive, Scalar, Size, TargetDataLayout, Variants, }; @@ -39,6 +39,13 @@ rustc_index::newtype_index! { pub struct FieldIdx {} } +impl FieldIdx { + /// The second field, at index 1. + /// + /// For use alongside [`FieldIdx::ZERO`], particularly with scalar pairs. + pub const ONE: FieldIdx = FieldIdx::from_u32(1); +} + rustc_index::newtype_index! { /// The *source-order* index of a variant in a type. /// @@ -93,7 +100,7 @@ impl<'a> Layout<'a> { self.0.0.largest_niche } - pub fn align(self) -> AbiAndPrefAlign { + pub fn align(self) -> AbiAlign { self.0.0.align } @@ -274,7 +281,7 @@ impl<'a, Ty> TyAndLayout<'a, Ty> { /// Finds the one field that is not a 1-ZST. /// Returns `None` if there are multiple non-1-ZST fields or only 1-ZST-fields. - pub fn non_1zst_field<C>(&self, cx: &C) -> Option<(usize, Self)> + pub fn non_1zst_field<C>(&self, cx: &C) -> Option<(FieldIdx, Self)> where Ty: TyAbiInterface<'a, C> + Copy, { @@ -288,7 +295,7 @@ impl<'a, Ty> TyAndLayout<'a, Ty> { // More than one non-1-ZST field. return None; } - found = Some((field_idx, field)); + found = Some((FieldIdx::from_usize(field_idx), field)); } found } |