Index: lld/trunk/MinGW/Driver.cpp
===================================================================
--- lld/trunk/MinGW/Driver.cpp
+++ lld/trunk/MinGW/Driver.cpp
@@ -303,6 +303,8 @@
     add("-include:" + StringRef(a->getValue()));
   for (auto *a : args.filtered(OPT_undefined))
     add("-includeoptional:" + StringRef(a->getValue()));
+  for (auto *a : args.filtered(OPT_delayload))
+    add("-delayload:" + StringRef(a->getValue()));
 
   std::vector<StringRef> searchPaths;
   for (auto *a : args.filtered(OPT_L)) {
Index: lld/trunk/MinGW/Options.td
===================================================================
--- lld/trunk/MinGW/Options.td
+++ lld/trunk/MinGW/Options.td
@@ -80,6 +80,8 @@
 def _HASH_HASH_HASH : Flag<["-"], "###">,
     HelpText<"Print (but do not run) the commands to run for this compilation">;
 def appcontainer: F<"appcontainer">, HelpText<"Set the appcontainer flag in the executable">;
+def delayload: S<"delayload">, HelpText<"DLL to load only on demand">;
+def delayload_eq: J<"delayload=">, Alias<delayload>;
 def mllvm: S<"mllvm">;
 def pdb: S<"pdb">, HelpText<"Output PDB debug info file, chosen implicitly if the argument is empty">;
 def pdb_eq: J<"pdb=">, Alias<pdb>;
Index: lld/trunk/test/MinGW/driver.test
===================================================================
--- lld/trunk/test/MinGW/driver.test
+++ lld/trunk/test/MinGW/driver.test
@@ -200,3 +200,7 @@
 # RUN: ld.lld -m i386pep --help 2>&1 | FileCheck -check-prefix=HELP %s
 # HELP: USAGE:
 # HELP: --enable-auto-import
+
+RUN: ld.lld -### -m i386pep foo.o -delayload user32.dll --delayload shell32.dll | FileCheck -check-prefix DELAYLOAD %s
+RUN: ld.lld -### -m i386pep foo.o -delayload=user32.dll --delayload=shell32.dll | FileCheck -check-prefix DELAYLOAD %s
+DELAYLOAD: -delayload:user32.dll -delayload:shell32.dll