[clang] [llvm] [AMDGPU] Add code model (#70760) test for amdgpu target. (PR #71019)

[Matt Arsenault via cfe-commits]

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@@ -13,6 +13,11 @@
 // RUN: not %clang -### -c --target=aarch64 -mcmodel=medium %s 2>&1 | FileCheck --check-prefix=ERR-MEDIUM %s
 // RUN: not %clang -### -c --target=aarch64 -mcmodel=kernel %s 2>&1 | FileCheck --check-prefix=ERR-KERNEL %s
 // RUN: not %clang --target=aarch64_32-linux -### -S -mcmodel=small %s 2>&1 | FileCheck --check-prefix=ERR-AARCH64_32 %s
+// RUN: %clang --target=amdgcn-amd-amdhsa -nogpulib -### -c -mcmodel=tiny %s 2>&1 | FileCheck --check-prefix=AMDGPU-MCMODEL-TINY %s
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arsenm wrote:

I'm not sure exactly what's being tested here, this looks like it's targeting C as a target? The more relevant case would be with amdgcn as the offload target. For direct compilation it would make more sense to emit the error 

https://github.com/llvm/llvm-project/pull/71019