[Offload][NFC] Avoid temporary string copies in InfoTreeNode#159372

jhuber6 merged 2 commits intollvm:mainllvm/llvm-project:mainfrom

AlexeySachkov:private/asachkov/optimize-infotreenode-addAlexeySachkov/llvm-project:private/asachkov/optimize-infotreenode-addCopy head branch name to clipboard