Add clang -cc1 parsing for frontend options.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89856 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 9d55a8e..73593f6 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -244,7 +244,7 @@
   if (Opts.ShowMacrosInCodeCompletion)
     Res.push_back("-code-completion-macros");
   if (Opts.ShowStats)
-    Res.push_back("-stats");
+    Res.push_back("-print-stats");
   if (Opts.ShowTimers)
     Res.push_back("-ftime-report");