Ensure enum cast moves

This commit is contained in:
Gary Guo 2022-10-13 16:44:31 +01:00
parent 4891d57f7a
commit de0396c718

View File

@ -197,13 +197,13 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
// create all the steps directly in MIR with operations all backends need to support anyway.
let (source, ty) = if let ty::Adt(adt_def, ..) = source.ty.kind() && adt_def.is_enum() {
let discr_ty = adt_def.repr().discr_type().to_ty(this.tcx);
let place = unpack!(block = this.as_place(block, source));
let temp = unpack!(block = this.as_temp(block, scope, source, Mutability::Not));
let discr = this.temp(discr_ty, source.span);
this.cfg.push_assign(
block,
source_info,
discr,
Rvalue::Discriminant(place),
Rvalue::Discriminant(temp.into()),
);
(Operand::Move(discr), discr_ty)