syntax_data: {"ast_node_type":"other","tokens":[{"end":20,"kind":"keyword","start":0,"text":"#[inline(never)]"}]}
source_snippet:     #[inline(never)]
context_before:     // it as #[inline(never)] to keep rustc's stack use in check.
context_after:     pub(crate) fn start_new_block(&mut self) -> BasicBlock {