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

[Nico Weber via cfe-commits]

================
@@ -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>
----------------
nico wrote:

Thanks! Since the test is now hermetic, I'm guessing it'll work now. I'll check my bot after you've relanded your patch.

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