syntax_data: {"ast_node_type":"variable","tokens":[{"end":94,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let literal = Const::from_bits(self.tcx, 0, ty::TypingEnv::fully_monomorphized(), ty);
context_before:     pub(crate) fn zero_literal(&mut self, span: Span, ty: Ty<'tcx>) -> Operand<'tcx> {