Function rustc_mir_build::thir::build_thir

pub fn build_thir<'thir, 'tcx>(
    tcx: TyCtxt<'tcx>, 
    owner_def: WithOptConstParam<LocalDefId>, 
    arena: &'thir Arena<'thir, 'tcx>, 
    expr: &'tcx Expr<'tcx>
) -> &'thir Expr<'thir, 'tcx>