[clang] [llvm] [AIX] Lower intrinsic __builtin_cpu_is into AIX platform-specific code. (PR #80069)

[Amy Kwan via cfe-commits]

================
@@ -16542,12 +16542,62 @@ Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
 
   Intrinsic::ID ID = Intrinsic::not_intrinsic;
 
+#include "llvm/TargetParser/PPCTargetParser.def"
+  // This lambda function converts builtin_cpu_is() into directly
----------------
amy-kwan wrote:

```suggestion
  // This lambda function converts __builtin_cpu_is() into directly
```

https://github.com/llvm/llvm-project/pull/80069