Index: COFF/Driver.cpp
===================================================================
--- COFF/Driver.cpp
+++ COFF/Driver.cpp
@@ -245,6 +245,9 @@
       if (Optional<StringRef> Path = findLib(Arg->getValue()))
         enqueuePath(*Path, false);
       break;
+    case OPT_entry:
+      Config->Entry = addUndefined(mangle(Arg->getValue()));
+      break;
     case OPT_export: {
       Export E = parseExport(Arg->getValue());
       if (Config->Machine == I386 && Config->MinGW) {
@@ -272,6 +275,10 @@
     case OPT_section:
       parseSection(Arg->getValue());
       break;
+    case OPT_subsystem:
+      parseSubsystem(Arg->getValue(), &Config->Subsystem,
+                     &Config->MajorOSVersion, &Config->MinorOSVersion);
+      break;
     case OPT_editandcontinue:
     case OPT_fastfail:
     case OPT_guardsym: