Wire up the -ftest-coverage and -fprofile-arcs flags to .gcno file emission (at
compile time) and .gcda emission (at runtime). --coverage enables both.

This does not yet add the profile_rt library to the link step if -fprofile-arcs
is enabled when linking.

llvm-svn: 129956
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 7cc1059..c1f7e15 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -1277,6 +1277,13 @@
 
   Args.AddAllArgs(CmdArgs, options::OPT_finstrument_functions);
 
+  if (Args.hasArg(options::OPT_ftest_coverage) ||
+      Args.hasArg(options::OPT_coverage))
+    CmdArgs.push_back("-femit-coverage-notes");
+  if (Args.hasArg(options::OPT_fprofile_arcs) ||
+      Args.hasArg(options::OPT_coverage))
+    CmdArgs.push_back("-femit-coverage-data");
+
   Args.AddLastArg(CmdArgs, options::OPT_nostdinc);
   Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
   Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);