[clang] [Clang][HIP] Deprecate the AMDGCN_WAVEFRONT_SIZE macros (PR #112849)

[Nico Weber via cfe-commits]

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@@ -0,0 +1,111 @@
+// REQUIRES: amdgpu-registered-target
+// RUN: %clang -xhip --offload-arch=gfx1030 --offload-host-only -pedantic -nogpuinc -nogpulib -nobuiltininc -fsyntax-only -Xclang -verify %s
+// RUN: %clang -xhip --offload-arch=gfx1030 --offload-device-only -pedantic -nogpuinc -nogpulib -nobuiltininc -fsyntax-only -Xclang -verify %s
+
+// Test that deprecation warnings for the wavefront size macro are emitted properly.
+
+#include <type_traits>
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nico wrote:

1. Clang's tests must be hermetic and can't include system headers
2. This fails on Mac: http://45.33.8.238/macm1/95266/step_6.txt

Please take a look and revert for now if it takes a while to fix.

https://github.com/llvm/llvm-project/pull/112849