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Use &IndexSlice instead of &IndexVec where possible

All the same reasons as for `[T]`: more general, less pointer chasing, and `&mut IndexSlice` emphasizes that it doesn't change *length*.
This commit is contained in:
Scott McMurray 2023-03-31 00:32:44 -07:00
parent a93bcdc307
commit a2ee7592d6
42 changed files with 168 additions and 118 deletions

View file

@ -21,7 +21,7 @@ use rustc_middle::ty::subst::InternalSubsts;
use rustc_middle::ty::{self, List, TyCtxt, TypeVisitableExt};
use rustc_span::Span;
use rustc_index::vec::{Idx, IndexVec};
use rustc_index::vec::{Idx, IndexSlice, IndexVec};
use std::cell::Cell;
use std::{cmp, iter, mem};
@ -184,7 +184,7 @@ pub fn collect_temps_and_candidates<'tcx>(
/// This wraps an `Item`, and has access to all fields of that `Item` via `Deref` coercion.
struct Validator<'a, 'tcx> {
ccx: &'a ConstCx<'a, 'tcx>,
temps: &'a mut IndexVec<Local, TempState>,
temps: &'a mut IndexSlice<Local, TempState>,
}
impl<'a, 'tcx> std::ops::Deref for Validator<'a, 'tcx> {
@ -669,7 +669,7 @@ impl<'tcx> Validator<'_, 'tcx> {
// FIXME(eddyb) remove the differences for promotability in `static`, `const`, `const fn`.
pub fn validate_candidates(
ccx: &ConstCx<'_, '_>,
temps: &mut IndexVec<Local, TempState>,
temps: &mut IndexSlice<Local, TempState>,
candidates: &[Candidate],
) -> Vec<Candidate> {
let mut validator = Validator { ccx, temps };