[memprof] Add IndexedMemProfReader::getMemProfCallerCalleePairs#115807

kazutakahirata merged 3 commits intollvm:mainllvm/llvm-project:mainfrom

kazutakahirata:memprof_undrift_extract_pairskazutakahirata/llvm-project:memprof_undrift_extract_pairsCopy head branch name to clipboard