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

[Tony Guillot via cfe-commits]

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@@ -0,0 +1,4 @@
+// RUN: not %clang -target spirv %s 2>&1 | FileCheck %s
+// CHECK: error: SPIR-V target requires a Vulkan environment
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to268 wrote:

Yep, `%0` is replaced by the value of the first variable/value on the stream.

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