[NFCI] Avoid adding duplicated SpecialCaseList::Sections.#140478

qinkunbao wants to merge 6 commits intomainllvm/llvm-project:mainfrom

users/qinkunbao/spr/nfci-avoid-adding-duplicated-specialcaselistsectionsllvm/llvm-project:users/qinkunbao/spr/nfci-avoid-adding-duplicated-specialcaselistsectionsCopy head branch name to clipboard