message: Fix codegen of SwitchInt
diff: @@ -89,6 +89,8 @@ fn trans_fn<'a, 'tcx: 'a>(
  // Step 6. Codegen function
  crate::abi::codegen_fn_prelude(&mut fx, start_ebb);
  codegen_fn_content(&mut fx);
  + fx.bcx.seal_all_blocks();
  + fx.bcx.finalize();
  // Step 7. Print function to terminal for debugging
  let mut writer = crate::pretty_clif::CommentWriter(fx.comments);
  @@ -180,7 +182,6 @@ fn codegen_fn_content<'a, 'tcx: 'a>(fx: &mut FunctionCx<'a, 'tcx, impl Backend>)
  values,
  targets,
  } => {
  - fx.bcx.ins().trap(TrapCode::User(0));
  // TODO: prevent panics on large and negative disciminants
  if should_codegen(fx.tcx.sess) {
  let discr = trans_operand(fx, discr).load_value(fx);
  @@ -193,6 +194,8 @@ fn codegen_fn_content<'a, 'tcx: 'a>(fx: &mut FunctionCx<'a, 'tcx, impl Backend>)
  fx.bcx.ins().br_table(discr, jump_table);
  let otherwise_ebb = fx.get_ebb(targets[targets.len() - 1]);
  fx.bcx.ins().jump(otherwise_ebb, &[]);
  + } else {
  + fx.bcx.ins().trap(TrapCode::User(0));
  }
  }
  TerminatorKind::Call {
  