[ADT] Use "constexpr if" in get_hashable_data (NFC)#157309

kazutakahirata merged 1 commit intollvm:mainllvm/llvm-project:mainfrom

kazutakahirata:cleanup_20250906_ADT_Hashing_get_hashable_data_constexpr_ifkazutakahirata/llvm-project:cleanup_20250906_ADT_Hashing_get_hashable_data_constexpr_ifCopy head branch name to clipboard