[CodeGen] Remove LiveVariables::{isPHIJoin,setPHIJoin}#69128

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

kazutakahirata:pr_cleanup_dead_function_isPHIJoinkazutakahirata/llvm-project:pr_cleanup_dead_function_isPHIJoinCopy head branch name to clipboard