diff options
Diffstat (limited to 'compiler/rustc_mir_transform/src/instsimplify.rs')
| -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 4b9ebd40b85..3dc4edaaa5a 100644 --- a/compiler/rustc_mir_transform/src/instsimplify.rs +++ b/compiler/rustc_mir_transform/src/instsimplify.rs @@ -46,7 +46,6 @@ impl<'tcx> crate::MirPass<'tcx> for InstSimplify { } ctx.simplify_bool_cmp(rvalue); ctx.simplify_ref_deref(rvalue); - ctx.simplify_len(rvalue); ctx.simplify_ptr_aggregate(rvalue); ctx.simplify_cast(rvalue); ctx.simplify_repeated_aggregate(rvalue); @@ -166,18 +165,6 @@ impl<'tcx> InstSimplifyContext<'_, 'tcx> { } } - /// Transform `Len([_; N])` ==> `N`. - fn simplify_len(&self, rvalue: &mut Rvalue<'tcx>) { - if let Rvalue::Len(ref place) = *rvalue { - let place_ty = place.ty(self.local_decls, self.tcx).ty; - if let ty::Array(_, len) = *place_ty.kind() { - let const_ = Const::Ty(self.tcx.types.usize, len); - let constant = ConstOperand { span: DUMMY_SP, const_, user_ty: None }; - *rvalue = Rvalue::Use(Operand::Constant(Box::new(constant))); - } - } - } - /// Transform `Aggregate(RawPtr, [p, ()])` ==> `Cast(PtrToPtr, p)`. fn simplify_ptr_aggregate(&self, rvalue: &mut Rvalue<'tcx>) { if let Rvalue::Aggregate(box AggregateKind::RawPtr(pointee_ty, mutability), fields) = rvalue |