[NFC][CLANG] Fix static analyzer codes concerns about large copies by value

[Manna]

Summary

Reported by Static Analyzer Tool:

1. Inside "Format.cpp" file, in clang::​format::​internal::​reformat(clang::​format::​FormatStyle const &, llvm::​StringRef, llvm::​ArrayRef<clang::​tooling::​Range>, unsigned int, unsigned int, unsigned int, llvm::​StringRef, clang::​format::​FormattingAttemptStatus *)::​[lambda(clang::​format::​Environment const &) (instance 4)]::​operator ()(clang::​format::​Environment const &): A very large function call parameter exceeding the high threshold is passed by value.

pass_by_value: Capturing variable S of type clang::format::FormatStyle (size 800 bytes) by value, which exceeds the high threshold of 512 bytes

This patch removes redundant capturing variable S and uses type clang::format::FormatStyle Expanded instead.

2. Inside "ClangAttrEmitter.cpp" file, in clang::​GenerateMutualExclusionsChecks(llvm::​Record const &, llvm::​RecordKeeper const &, llvm::​raw_ostream &, llvm::​raw_ostream &, llvm::​raw_ostream &)::​[lambda(llvm::​Record const *) (instance 1)]::​operator ()(llvm::​Record const *): A large function call parameter exceeding the low threshold is passed by value.

pass_by_value: Capturing variable Attr of type llvm::Record const (size 176 bytes) by value, which exceeds the low threshold of 128 bytes.

This patch passes const Record by reference in IsCurAttr lambda capture.

clang/lib/Format/Format.cpp

if (Style.QualifierAlignment != FormatStyle::QAS_Leave) {
         return QualifierAlignmentFixer(Env, Expanded, Code, Ranges,
                                        FirstStartColumn, NextStartColumn,
                                        LastStartColumn, FileName)
             .process();
       });
     }
 
     if (Style.InsertBraces) {
-      FormatStyle S = Expanded;
-      S.InsertBraces = true;
-      Passes.emplace_back([&, S](const Environment &Env) {
-        return BracesInserter(Env, S).process(/*SkipAnnotation=*/true);
+      Expanded.InsertBraces = true;
+      Passes.emplace_back([&](const Environment &Env) {
+        return BracesInserter(Env, Expanded).process(/*SkipAnnotation=*/true);
       });
     }
 
     if (Style.RemoveBracesLLVM) {
-      FormatStyle S = Expanded;
-      S.RemoveBracesLLVM = true;
-      Passes.emplace_back([&, S](const Environment &Env) {
-        return BracesRemover(Env, S).process(/*SkipAnnotation=*/true);
+      Expanded.RemoveBracesLLVM = true;
+      Passes.emplace_back([&](const Environment &Env) {
+        return BracesRemover(Env, Expanded).process(/*SkipAnnotation=*/true);
       });
     }
 
     if (Style.RemoveSemicolon) {
-      FormatStyle S = Expanded;
-      S.RemoveSemicolon = true;
-      Passes.emplace_back([&, S](const Environment &Env) {
-        return SemiRemover(Env, S).process(/*SkipAnnotation=*/true);
+      Expanded.RemoveSemicolon = true;
+      Passes.emplace_back([&](const Environment &Env) {
+        return SemiRemover(Env, Expanded).process(/*SkipAnnotation=*/true);
       });
     }
 
     if (Style.FixNamespaceComments) {
       Passes.emplace_back([&](const Environment &Env) {
         return NamespaceEndCommentsFixer(Env, Expanded).process();
       });
     }

clang/utils/TableGen/ClangAttrEmitter.cpp

static void GenerateMutualExclusionsChecks(const Record &Attr,
   bool CurAttrIsDeclAttr =
       !CurAttrIsStmtAttr || Attr.isSubClassOf("DeclOrStmtAttr");
 
   std::vector<std::string> DeclAttrs, StmtAttrs;
 
   for (const Record *Exclusion : ExclusionsList) {
     std::vector<Record *> MutuallyExclusiveAttrs =
         Exclusion->getValueAsListOfDefs("Exclusions");
-    auto IsCurAttr = [Attr](const Record *R) {
+    auto IsCurAttr = [&Attr](const Record *R) {
       return R->getName() == Attr.getName();
     };
     if (llvm::any_of(MutuallyExclusiveAttrs, IsCurAttr)) {
       // This list of exclusions includes the attribute we're looking for, so
       // add the exclusive attributes to the proper list for checking.
       for (const Record *AttrToExclude : MutuallyExclusiveAttrs) {
         if (IsCurAttr(AttrToExclude))
           continue;