diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index e215b6e..c1b5158 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -6328,6 +6328,11 @@
   if (Args.hasArg(options::OPT_fnested_functions))
     CmdArgs.push_back("-allow_stack_execute");
 
+  // TODO: It would be nice to use addProfileRT() here, but darwin's compiler-rt
+  // paths are different enough from other toolchains that this needs a fair
+  // amount of refactoring done first.
+  getMachOToolChain().addProfileRTLibs(Args, CmdArgs);
+
   if (!Args.hasArg(options::OPT_nostdlib) &&
       !Args.hasArg(options::OPT_nodefaultlibs)) {
     if (getToolChain().getDriver().CCCIsCXX())