diff options
Diffstat (limited to 'compiler/rustc_mir_transform/src')
| -rw-r--r-- | compiler/rustc_mir_transform/src/instsimplify.rs | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/compiler/rustc_mir_transform/src/instsimplify.rs b/compiler/rustc_mir_transform/src/instsimplify.rs index 6bff535586a..e4dc617620e 100644 --- a/compiler/rustc_mir_transform/src/instsimplify.rs +++ b/compiler/rustc_mir_transform/src/instsimplify.rs @@ -5,7 +5,6 @@ use crate::MirPass; use rustc_hir::Mutability; use rustc_middle::mir::*; use rustc_middle::ty::layout::ValidityRequirement; -use rustc_middle::ty::util::IntTypeExt; use rustc_middle::ty::{self, ParamEnv, SubstsRef, Ty, TyCtxt}; use rustc_span::symbol::Symbol; use rustc_target::abi::FieldIdx; @@ -163,18 +162,6 @@ impl<'tcx> InstSimplifyContext<'tcx, '_> { return; } - // Transmuting a fieldless enum to its repr is a discriminant read - if let ty::Adt(adt_def, ..) = operand_ty.kind() - && adt_def.is_enum() - && adt_def.is_payloadfree() - && let Some(place) = operand.place() - && let Some(repr_int) = adt_def.repr().int - && repr_int.to_ty(self.tcx) == *cast_ty - { - *rvalue = Rvalue::Discriminant(place); - return; - } - // Transmuting a transparent struct/union to a field's type is a projection if let ty::Adt(adt_def, substs) = operand_ty.kind() && adt_def.repr().transparent() |