[clang] [clang-tools-extra] Revert "[clang] Don't add documentation comments to the AST if not requested" (PR #219807)

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github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- clang-tools-extra/clang-doc/tool/ClangDocMain.cpp clang-tools-extra/clangd/Compiler.cpp clang-tools-extra/clangd/index/IndexAction.cpp clang/include/clang/Basic/CommentOptions.h clang/include/clang/Basic/Diagnostic.h clang/include/clang/Basic/DiagnosticIDs.h clang/include/clang/Sema/Sema.h clang/lib/AST/ASTContext.cpp clang/lib/Basic/DiagnosticIDs.cpp clang/lib/Driver/ToolChains/Clang.cpp clang/lib/ExtractAPI/ExtractAPIConsumer.cpp clang/lib/Frontend/ASTUnit.cpp clang/lib/Frontend/CompilerInvocation.cpp clang/lib/Frontend/FrontendActions.cpp clang/lib/Sema/Sema.cpp clang/lib/Sema/SemaDecl.cpp --diff_from_common_commit
``````````

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changing `origin/main` to the base branch/commit you want to compare against.
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Sema/Sema.cpp b/clang/lib/Sema/Sema.cpp
index 21f71d7f8..e7401485d 100644
--- a/clang/lib/Sema/Sema.cpp
+++ b/clang/lib/Sema/Sema.cpp
@@ -2749,7 +2749,6 @@ LambdaScopeInfo *Sema::getCurGenericLambda() {
   return nullptr;
 }
 
-
 void Sema::ActOnComment(SourceRange Comment) {
   if (!LangOpts.RetainCommentsFromSystemHeaders &&
       SourceMgr.isInSystemHeader(Comment.getBegin()))

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https://github.com/llvm/llvm-project/pull/219807