diff --git a/clang/test/lit.cfg.py b/clang/test/lit.cfg.py
--- a/clang/test/lit.cfg.py
+++ b/clang/test/lit.cfg.py
@@ -61,6 +61,7 @@
 tools = [
     'apinotes-test', 'c-index-test', 'clang-diff', 'clang-format', 'clang-repl', 'clang-offload-packager',
     'clang-tblgen', 'clang-scan-deps', 'opt', 'llvm-ifs', 'yaml2obj', 'clang-linker-wrapper',
+    'llvm-lto', 'llvm-lto2', 'llvm-profdata',
     ToolSubst('%clang_extdef_map', command=FindTool(
         'clang-extdef-mapping'), unresolved='ignore'),
 ]