Reapply "[MemProf] Use radix tree for alloc contexts in bitcode summaries" (#117395)#117404

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

teresajohnson:memprof_context_radix2teresajohnson/llvm-project:memprof_context_radix2Copy head branch name to clipboard