[clang] [Clang] Implement P3034R1 Module Declarations Shouldn’t be Macros (PR #90574)

[Chuanqi Xu via cfe-commits]

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@@ -0,0 +1,13 @@
+// RUN: %clang_cc1 -std=c++20 -emit-module-interface %s -triple x86_64-linux-gnu -DTEST=1 -verify
+// RUN: %clang_cc1 -std=c++20 -emit-module-interface %s -triple x86_64-linux-gnu -DTEST=2 -verify
+
+module;
+export module x;
+#include "version.h"
+#if TEST == 1
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ChuanqiXu9 wrote:

we prefer using split-file now.

https://github.com/llvm/llvm-project/pull/90574