[llvm] [clang] Disable PGO instrumentation on naked function (PR #75224)

[Teresa Johnson via cfe-commits]

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@@ -892,6 +892,10 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, QualType RetTy,
     }
   }
 
+  if (FD->hasAttr<NakedAttr>()) {
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teresajohnson wrote:

Is this change needed given the separate change in LLVM skipPGOGen?

https://github.com/llvm/llvm-project/pull/75224