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Auto merge of #109762 - scottmcm:variantdef-indexvec, r=WaffleLapkin

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Update `ty::VariantDef` to use `IndexVec<FieldIdx, FieldDef>`

And while doing the updates for that, also uses `FieldIdx` in `ProjectionKind::Field` and `TypeckResults::field_indices`.

There's more places that could use it (like `rustc_const_eval` and `LayoutS`), but I tried to keep this PR from exploding to *even more* places.

Part 2/? of https://github.com/rust-lang/compiler-team/issues/606
This commit is contained in:
bors 2023-03-31 03:36:18 +00:00
commit eb3e9c1f45
47 changed files with 127 additions and 104 deletions
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6
compiler/rustc_mir_dataflow/src/elaborate_drops.rs
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@ -411,9 +411,9 @@ where
fn open_drop_for_box(&mut self, adt: ty::AdtDef<'tcx>, substs: SubstsRef<'tcx>) -> BasicBlock {
// drop glue is sent straight to codegen
// box cannot be directly dereferenced
let unique_ty = adt.non_enum_variant().fields[0].ty(self.tcx(), substs);
let nonnull_ty =
unique_ty.ty_adt_def().unwrap().non_enum_variant().fields[0].ty(self.tcx(), substs);
let unique_ty = adt.non_enum_variant().fields[FieldIdx::new(0)].ty(self.tcx(), substs);
let unique_variant = unique_ty.ty_adt_def().unwrap().non_enum_variant();
let nonnull_ty = unique_variant.fields[FieldIdx::from_u32(0)].ty(self.tcx(), substs);
let ptr_ty = self.tcx().mk_imm_ptr(substs[0].expect_ty());
let unique_place = self.tcx().mk_place_field(self.place, FieldIdx::new(0), unique_ty);