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

[Fangrui Song via cfe-commits]

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@@ -0,0 +1,4 @@
+// RUN: %clang -target x86_64-unknown-uefi -S -emit-llvm -o - %s | \
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MaskRay wrote:

test/Driver tests should generally only test `-###`, not `-emit-llvm -S` (codegen). Place such codegen tests to test/CodeGen

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