message: Monomorphize ConstantKind::Unevaluated in mir_operand_get_const_val
diff: @@ -459,14 +459,13 @@ pub(crate) fn mir_operand_get_const_val<'tcx>(
  operand: &Operand<'tcx>,
  ) -> Option<ConstValue<'tcx>> {
  match operand {
  - Operand::Constant(const_) => match const_.literal {
  - ConstantKind::Ty(const_) => fx
  - .monomorphize(const_)
  - .eval_for_mir(fx.tcx, ParamEnv::reveal_all())
  - .try_to_value(fx.tcx),
  + Operand::Constant(const_) => match fx.monomorphize(const_.literal) {
  + ConstantKind::Ty(const_) => Some(
  + const_.eval_for_mir(fx.tcx, ParamEnv::reveal_all()).try_to_value(fx.tcx).unwrap(),
  + ),
  ConstantKind::Val(val, _) => Some(val),
  ConstantKind::Unevaluated(uv, _) => {
  - fx.tcx.const_eval_resolve(ParamEnv::reveal_all(), uv, None).ok()
  + Some(fx.tcx.const_eval_resolve(ParamEnv::reveal_all(), uv, None).unwrap())
  }
  },
  // FIXME(rust-lang/rust#85105): Casts like `IMM8 as u32` result in the const being stored
  