{"ast_node_type":"function","tokens":[{"end":75,"kind":"keyword","start":0,"text":"fn"}]}
    fn with_cx(cx: &'a CodegenCx<'gcc, 'tcx>, block: Block<'gcc>) -> Self {
impl<'a, 'gcc, 'tcx> Builder<'a, 'gcc, 'tcx> {
        Builder { cx, block, location: None, value_counter: Cell::new(0) }