diff --git a/lld/test/wasm/debug.test b/lld/test/wasm/debug.test
new file mode 100644
--- /dev/null
+++ b/lld/test/wasm/debug.test
@@ -0,0 +1,7 @@
+RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %p/Inputs/start.s -o %t.foo.o
+
+# Check -debug
+RUN: wasm-ld %t.foo.o -o %t.t.out.wasm -debug 2>&1 | FileCheck %s
+CHECK: Args: wasm-ld (LLVM option parsing)
+CHECK: wasm-ld: writing MEMORY
+
diff --git a/lld/wasm/Driver.cpp b/lld/wasm/Driver.cpp
--- a/lld/wasm/Driver.cpp
+++ b/lld/wasm/Driver.cpp
@@ -743,6 +743,10 @@
   WasmOptTable parser;
   opt::InputArgList args = parser.parse(argsArr.slice(1));
 
+  // Handle -debug
+  if (args.hasArg(OPT_debug))
+    DebugFlag = true;
+
   // Handle --help
   if (args.hasArg(OPT_help)) {
     parser.PrintHelp(lld::outs(),
diff --git a/lld/wasm/Options.td b/lld/wasm/Options.td
--- a/lld/wasm/Options.td
+++ b/lld/wasm/Options.td
@@ -164,6 +164,9 @@
 def max_memory: J<"max-memory=">,
   HelpText<"Maximum size of the linear memory">;
 
+def debug: F<"debug">,
+  HelpText<"Enable LLVM style debug output">;
+
 def no_entry: F<"no-entry">,
   HelpText<"Do not output any entry point">;