[clang] [UEFI] X86_64 UEFI Clang Driver (PR #76838)

[Fangrui Song via cfe-commits]

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@@ -0,0 +1,88 @@
+//===--- UEFI.h - UEFI ToolChain Implementations ----------*- C++ -*-===//
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MaskRay wrote:

first line is incorrect. ensure 80-char wide and omit `C++` for `.cpp` files.

https://github.com/llvm/llvm-project/pull/76838