simpleUnOpType

fn simpleUnOpType(
    gz: *GenZir,
    scope: *Scope,
    ri: ResultInfo,
    node: Ast.Node.Index,
    operand_node: Ast.Node.Index,
    tag: Zir.Inst.Tag,
) InnerError!Zir.Inst.Ref {
    const operand = try typeExpr(gz, scope, operand_node);
    const result = try gz.addUnNode(tag, operand, node);
    return rvalue(gz, ri, result, node);
}