bjoernager/rust
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clean up struct layout code

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This commit is contained in:
Lukas Markeffsky 2023-07-02 14:06:56 +02:00
parent 4b6749b21e
commit 478071ba9d
2 changed files with 41 additions and 36 deletions
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8
compiler/rustc_abi/src/layout.rs
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@ -134,7 +134,7 @@ pub trait LayoutCalculator {
scalar_valid_range: (Bound<u128>, Bound<u128>),
discr_range_of_repr: impl Fn(i128, i128) -> (Integer, bool),
discriminants: impl Iterator<Item = (VariantIdx, i128)>,
niche_optimize_enum: bool,
dont_niche_optimize_enum: bool,
always_sized: bool,
) -> Option<LayoutS> {
let dl = self.current_data_layout();
@ -183,10 +183,10 @@ pub trait LayoutCalculator {
// (Typechecking will reject discriminant-sizing attrs.)
let v = present_first;
let kind = if is_enum || variants[v].is_empty() {
let kind = if is_enum || variants[v].is_empty() || always_sized {
StructKind::AlwaysSized
} else {
if !always_sized { StructKind::MaybeUnsized } else { StructKind::AlwaysSized }
StructKind::MaybeUnsized
};
let mut st = self.univariant(dl, &variants[v], repr, kind)?;
@ -280,7 +280,7 @@ pub trait LayoutCalculator {
}
let calculate_niche_filling_layout = || -> Option<TmpLayout> {
if niche_optimize_enum {
if dont_niche_optimize_enum {
return None;
}