From e5906e1f957be3452a0de43ddeaadff5b4beabca Mon Sep 17 00:00:00 2001
From: Tianqi Chen <tqchen@users.noreply.github.com>
Date: Mon, 20 Feb 2023 11:26:35 -0500
Subject: [PATCH] [BugFix][UMA] Protect target registration (#13624) (#3)

This PR address fixes for UMA target registration.
* Fix the doc issue #13304
* Continues stalled PR #12731

Changes:
* Incorporates all proposed fixes from mentioned [PR #12731](https://github.com/apache/tvm/pull/12731)
* Address test case concerns and discussions from [PR #12731](https://github.com/apache/tvm/pull/12731)
* **NEW:** Already exiting target cannot be created, explicit error on this.
* **NEW:** Attributes having special/reserved scope cannot be created explicitly.

It also address proper test cases for all the above.

Signed-off-by: tqchen <tianqi.tchen@gmail.com>
Co-authored-by: Balint Cristian <cristian.balint@gmail.com>