Add a test to check if __UEFI__ is defined for UEFI targets.

Prabhuk · Prabhuk · commit 4c96e0d1bbae · 2024-12-21T13:16:38.000-08:00
diff --git a/clang/test/Driver/uefi-defines.c b/clang/test/Driver/uefi-defines.c
@@ -0,0 +1,6 @@
+// RUN: %clang -target x86_64-unknown-uefi %s -emit-llvm -S -c -o - | FileCheck %s
+
+// CHECK: __UEFI__defined
+#ifdef __UEFI__
+void __UEFI__defined() {}
+#endif
