[OPENMP] Fixed linked libraries for libiomp5 on Linux

llvm-svn: 203212
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 86a6237..d76ff5c 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -6911,7 +6911,7 @@
       AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
 
       if (Args.hasArg(options::OPT_pthread) ||
-          Args.hasArg(options::OPT_pthreads) || UsedOpenMPLib == LibGOMP)
+          Args.hasArg(options::OPT_pthreads) || UsedOpenMPLib != LibUnknown)
         CmdArgs.push_back("-lpthread");
 
       CmdArgs.push_back("-lc");