{"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"//"}]}
        // TODO(antoyo): check that it indeed sign extend the value.
    fn sext(&mut self, value: RValue<'gcc>, dest_ty: Type<'gcc>) -> RValue<'gcc> {
        if dest_ty.dyncast_vector().is_some() {