[clang] [llvm] [Clang][AIX] Add -mloadtime-comment-vars flag to preserve identifying variables (PR #187986)

[Hubert Tong via cfe-commits]

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@@ -15452,6 +15520,13 @@ void Sema::FinalizeDeclaration(Decl *ThisDecl) {
     }
   }
 
+  // Validate variables named in '-mloadtime-comment-vars=': supported string
+  // variables get an implicit attribute that CodeGen uses to preserve them;
+  // named variables that cannot be preserved are diagnosed.
+  if (!getLangOpts().LoadTimeCommentVars.empty() && !VD->isInvalidDecl() &&
+      Context.getTargetInfo().getTriple().isOSAIX())
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hubert-reinterpretcast wrote:

Isn't the last condition implied by the first?

https://github.com/llvm/llvm-project/pull/187986