[clang] [Clang] diagnosing missing Vulkan environment when using SPIR-V triple (PR #190840)

[Tony Guillot via cfe-commits]

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@@ -15,6 +15,8 @@
 
 #include "Targets.h"
 #include "clang/Basic/AddressSpaces.h"
+#include "clang/Basic/Diagnostic.h"
+#include "clang/Basic/DiagnosticFrontend.h"
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to268 wrote:

Make sure theses included headers are really necessary to compile the code. Sometimes they are automatically added by the language server, but they are not always necessary to make the code compile.

https://github.com/llvm/llvm-project/pull/190840