Index: lld/trunk/COFF/Driver.cpp
===================================================================
--- lld/trunk/COFF/Driver.cpp
+++ lld/trunk/COFF/Driver.cpp
@@ -574,6 +574,13 @@
   // Parse command line options.
   opt::InputArgList Args = Parser.parseLINK(ArgsArr.slice(1));
 
+  // Parse and evaluate -mllvm options.
+  std::vector<const char *> V;
+  V.push_back("lld-link (LLVM option parsing)");
+  for (auto *Arg : Args.filtered(OPT_mllvm))
+    V.push_back(Arg->getValue());
+  cl::ParseCommandLineOptions(V.size(), V.data());
+
   // Handle /help
   if (Args.hasArg(OPT_help)) {
     printHelp(ArgsArr[0]);
Index: lld/trunk/test/COFF/lto-debug-pass-arguments.ll
===================================================================
--- lld/trunk/test/COFF/lto-debug-pass-arguments.ll
+++ lld/trunk/test/COFF/lto-debug-pass-arguments.ll
@@ -0,0 +1,16 @@
+; REQUIRES: x86
+; RUN: llvm-as %s -o %t.obj
+; RUN: lld-link /dll /out:%t.dll %t.obj /mllvm:-debug-pass=Arguments 2>&1 | FileCheck %s
+
+target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc"
+
+define void @dummy() {
+  ret void
+}
+
+define void @_DllMainCRTStartup() {
+  ret void
+}
+
+; CHECK: Pass Arguments: