[clang] [clang] Fix name conflict with `sys/mac.h` on AIX (PR #88644)

[Aaron Ballman via cfe-commits]

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@@ -50,6 +50,10 @@ const char *CudaVersionToString(CudaVersion V);
 // Input is "Major.Minor"
 CudaVersion CudaStringToVersion(const llvm::Twine &S);
 
+// We have a name conflict with sys/mac.h on AIX
+#ifdef SM_32
+#undef SM_32
+#endif
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AaronBallman wrote:

`_SM_32` is a reserved identifier so we should not use that as a name.

https://github.com/llvm/llvm-project/pull/88644