[CodeGen] Avoid repeated hash lookups (NFC)#125025

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

kazutakahirata:cleanup_001_repeated_hash_lookups_llvm_CodeGen_StackColoringkazutakahirata/llvm-project:cleanup_001_repeated_hash_lookups_llvm_CodeGen_StackColoringCopy head branch name to clipboard