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Ensure enum cast moves

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(cherry picked from commit de0396c718)
This commit is contained in:
Gary Guo 2022-10-13 16:44:31 +01:00 • committed by Josh Stone
parent de7a6e5b3e
commit f66eca1f13
1 changed files with 2 additions and 2 deletions
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4
compiler/rustc_mir_build/src/build/expr/as_rvalue.rs
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@ -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)