[clang] [CIR] Upstream global variable linkage types (PR #129072)

[Andy Kaylor via cfe-commits]

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@@ -0,0 +1,22 @@
+//====- CIROpInterfaces.cpp - Interface to AST Attributes ---------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
----------------
andykaylor wrote:

I notice we're missing file descriptions in header blocks of several of the files you're adding here. I don't know how much people care about that, but the coding standards say there say there should be one. Many existing files that have it don't follow the doxygen format described in the coding standards.

https://llvm.org/docs/CodingStandards.html#file-headers

https://github.com/llvm/llvm-project/pull/129072