[MC] Avoid repeated hash lookups (NFC)#123502

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

kazutakahirata:cleanup_001_repeated_hash_lookups_llvm_MCkazutakahirata/llvm-project:cleanup_001_repeated_hash_lookups_llvm_MCCopy head branch name to clipboard