bjoernager/rust
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compiler: Add is_uninhabited and use LayoutS accessors

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This reduces the need of the compiler to peek on the fields of LayoutS.
This commit is contained in:
Jubilee Young 2024-10-27 21:34:49 -07:00
parent 5f5c243ca0
commit 88a9edc091
20 changed files with 40 additions and 37 deletions
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4
compiler/rustc_abi/src/layout.rs
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@ -28,7 +28,7 @@ where
VariantIdx: Idx,
F: Deref<Target = &'a LayoutS<FieldIdx, VariantIdx>> + fmt::Debug,
{
let uninhabited = fields.iter().any(|f| f.abi.is_uninhabited());
let uninhabited = fields.iter().any(|f| f.is_uninhabited());
// We cannot ignore alignment; that might lead us to entirely discard a variant and
// produce an enum that is less aligned than it should be!
let is_1zst = fields.iter().all(|f| f.is_1zst());
@ -681,7 +681,7 @@ impl<Cx: HasDataLayout> LayoutCalculator<Cx> {
let discr_type = repr.discr_type();
let bits = Integer::from_attr(dl, discr_type).size().bits();
for (i, mut val) in discriminants {
if !repr.c() && variants[i].iter().any(|f| f.abi.is_uninhabited()) {
if !repr.c() && variants[i].iter().any(|f| f.is_uninhabited()) {
continue;
}
if discr_type.is_signed() {