Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp
+++ lib/Driver/Tools.cpp
@@ -8366,6 +8366,12 @@
   if (D.isUsingLTO())
     AddGoldPlugin(ToolChain, Args, CmdArgs, D.getLTOMode() == LTOK_Thin);
 
+  if (D.isUsingLTO()) {
+    for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
+        CmdArgs.push_back(Args.MakeArgString("-plugin-opt=" + StringRef(A->getValue(0))));
+    }
+  }
+
   bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
   AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs);
 
@@ -9261,6 +9267,12 @@
   if (D.isUsingLTO())
     AddGoldPlugin(ToolChain, Args, CmdArgs, D.getLTOMode() == LTOK_Thin);
 
+  if (D.isUsingLTO()) {
+    for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
+        CmdArgs.push_back(Args.MakeArgString("-plugin-opt=" + StringRef(A->getValue(0))));
+    }
+  }
+
   if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
     CmdArgs.push_back("--no-demangle");