{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"fx.bcx.ins().icmp_imm(IntCC::SignedLessThan,"}]}
                        fx.bcx.ins().icmp_imm(IntCC::SignedLessThan, val, -(1 << (ty.bits() - 1)));
                    let has_underflow =
                    let has_overflow = fx.bcx.ins().icmp_imm(