Function rustc_mir::shim::new_body

pub(in shim) fn new_body<'tcx>(
    source: MirSource<'tcx>, 
    basic_blocks: IndexVec<BasicBlock, BasicBlockData<'tcx>>, 
    local_decls: IndexVec<Local, LocalDecl<'tcx>>, 
    arg_count: usize, 
    span: Span
) -> Body<'tcx>