bjoernager/rust
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rustc_index: Add a ZERO constant to index types

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It is commonly used.
This commit is contained in:
Vadim Petrochenkov 2024-04-03 17:49:59 +03:00
parent ceab6128fa
commit b40ea03f8a
42 changed files with 80 additions and 90 deletions
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12
compiler/rustc_mir_transform/src/known_panics_lint.rs
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@ -13,7 +13,7 @@ use rustc_const_eval::interpret::{
use rustc_data_structures::fx::FxHashSet;
use rustc_hir::def::DefKind;
use rustc_hir::HirId;
use rustc_index::{bit_set::BitSet, Idx, IndexVec};
use rustc_index::{bit_set::BitSet, IndexVec};
use rustc_middle::mir::visit::{MutatingUseContext, NonMutatingUseContext, PlaceContext, Visitor};
use rustc_middle::mir::*;
use rustc_middle::ty::layout::{LayoutError, LayoutOf, LayoutOfHelpers, TyAndLayout};
@ -124,10 +124,8 @@ impl<'tcx> Value<'tcx> {
fields.ensure_contains_elem(*idx, || Value::Uninit)
}
(PlaceElem::Field(..), val @ Value::Uninit) => {
*val = Value::Aggregate {
variant: VariantIdx::new(0),
fields: Default::default(),
};
*val =
Value::Aggregate { variant: VariantIdx::ZERO, fields: Default::default() };
val.project_mut(&[*proj])?
}
_ => return None,
@ -572,7 +570,7 @@ impl<'mir, 'tcx> ConstPropagator<'mir, 'tcx> {
self.use_ecx(|this| this.ecx.overflowing_binary_op(bin_op, &left, &right))?;
let overflowed = ImmTy::from_bool(overflowed, self.tcx);
Value::Aggregate {
variant: VariantIdx::new(0),
variant: VariantIdx::ZERO,
fields: [Value::from(val), overflowed.into()].into_iter().collect(),
}
}
@ -607,7 +605,7 @@ impl<'mir, 'tcx> ConstPropagator<'mir, 'tcx> {
| AggregateKind::Tuple
| AggregateKind::Closure(_, _)
| AggregateKind::Coroutine(_, _)
| AggregateKind::CoroutineClosure(_, _) => VariantIdx::new(0),
| AggregateKind::CoroutineClosure(_, _) => VariantIdx::ZERO,
},
}
}