[llvm] cmake: Derive CMake system name from a triple via new mechanism (PR #208773)

[Alexis Engelke via llvm-commits]

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@@ -0,0 +1,196 @@
+#!/usr/bin/env python3
+# ===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+# ===----------------------------------------------------------------------===##
+"""Tests for get_triple_system_name.
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aengelke wrote:

Move to test/?

https://github.com/llvm/llvm-project/pull/208773