Index: lld/trunk/COFF/Driver.cpp
===================================================================
--- lld/trunk/COFF/Driver.cpp
+++ lld/trunk/COFF/Driver.cpp
@@ -801,7 +801,7 @@
     Config->Force = true;
 
   // Handle /debug
-  if (Args.hasArg(OPT_debug)) {
+  if (Args.hasArg(OPT_debug) || Args.hasArg(OPT_debug_dwarf)) {
     Config->Debug = true;
     if (auto *Arg = Args.getLastArg(OPT_debugtype))
       Config->DebugTypes = parseDebugType(Arg->getValue());
@@ -1135,7 +1135,7 @@
   }
 
   // Disable PDB generation if the user requested it.
-  if (Args.hasArg(OPT_nopdb))
+  if (Args.hasArg(OPT_nopdb) || Args.hasArg(OPT_debug_dwarf))
     Config->PDBPath = "";
 
   // Set default image base if /base is not given.
Index: lld/trunk/COFF/Options.td
===================================================================
--- lld/trunk/COFF/Options.td
+++ lld/trunk/COFF/Options.td
@@ -117,6 +117,7 @@
 def help_q : Flag<["/?", "-?"], "">, Alias<help>;
 
 // LLD extensions
+def debug_dwarf : F<"debug:dwarf">;
 def export_all_symbols : F<"export-all-symbols">;
 def nopdb : F<"nopdb">, HelpText<"Disable PDB generation for DWARF users">;
 def nosymtab : F<"nosymtab">;
Index: lld/trunk/MinGW/Driver.cpp
===================================================================
--- lld/trunk/MinGW/Driver.cpp
+++ lld/trunk/MinGW/Driver.cpp
@@ -152,6 +152,8 @@
     Add("-verbose");
   if (Args.hasArg(OPT_export_all_symbols))
     Add("-export-all-symbols");
+  if (!Args.hasArg(OPT_strip_all))
+    Add("-debug:dwarf");
 
   if (auto *A = Args.getLastArg(OPT_m)) {
     StringRef S = A->getValue();
Index: lld/trunk/MinGW/Options.td
===================================================================
--- lld/trunk/MinGW/Options.td
+++ lld/trunk/MinGW/Options.td
@@ -23,6 +23,8 @@
 def shared: F<"shared">, HelpText<"Build a shared object">;
 def subs: S<"subsystem">, HelpText<"Specify subsystem">;
 def stack: S<"stack">;
+def strip_all: F<"strip-all">,
+    HelpText<"Omit all symbol information from the output binary">;
 def whole_archive: F<"whole-archive">,
     HelpText<"Include all object files for following archives">;
 def verbose: F<"verbose">, HelpText<"Verbose mode">;
@@ -49,3 +51,4 @@
 
 // Alias
 def alias_entry_e: JoinedOrSeparate<["-"], "e">, Alias<entry>;
+def alias_strip_s: Flag<["-"], "s">, Alias<strip_all>;
Index: lld/trunk/test/MinGW/driver.test
===================================================================
--- lld/trunk/test/MinGW/driver.test
+++ lld/trunk/test/MinGW/driver.test
@@ -82,3 +82,10 @@
 
 RUN: ld.lld -### -m i386pep foo.o -Xlink=-lldmap | FileCheck -check-prefix XLINK %s
 XLINK: -lldmap
+
+RUN: ld.lld -### -m i386pep foo.o | FileCheck -check-prefix DEBUG %s
+DEBUG: -debug:dwarf
+
+RUN: ld.lld -### -m i386pep foo.o -s | FileCheck -check-prefix STRIP %s
+RUN: ld.lld -### -m i386pep foo.o --strip-all | FileCheck -check-prefix STRIP %s
+STRIP-NOT: -debug:dwarf