message: Remove vector support from load_scalar
diff: @@ -122,14 +122,11 @@ pub fn load_scalar<'a>(self, fx: &mut FunctionCx<'_, 'tcx, impl Backend>) -> Val
  let layout = self.1;
  match self.0 {
  CValueInner::ByRef(ptr) => {
  - let clif_ty = match layout.abi {
  - layout::Abi::Scalar(ref scalar) => scalar_to_clif_type(fx.tcx, scalar.clone()),
  - layout::Abi::Vector { ref element, count } => {
  - scalar_to_clif_type(fx.tcx, element.clone())
  - .by(u16::try_from(count).unwrap()).unwrap()
  - }
  + let scalar = match layout.abi {
  + layout::Abi::Scalar(ref scalar) => scalar.clone(),
  _ => unreachable!(),
  };
  + let clif_ty = scalar_to_clif_type(fx.tcx, scalar);
  ptr.load(fx, clif_ty, MemFlags::new())
  }
  CValueInner::ByVal(value) => value,
  