diff --git a/lld/COFF/Driver.cpp b/lld/COFF/Driver.cpp
--- a/lld/COFF/Driver.cpp
+++ b/lld/COFF/Driver.cpp
@@ -408,6 +408,10 @@
     case OPT_section:
       parseSection(arg->getValue());
       break;
+    case OPT_stack:
+      parseNumbers(arg->getValue(), &config->stackReserve,
+                   &config->stackCommit);
+      break;
     case OPT_subsystem: {
       bool gotVersion = false;
       parseSubsystem(arg->getValue(), &config->subsystem,
diff --git a/lld/test/COFF/stack-drectve.s b/lld/test/COFF/stack-drectve.s
new file mode 100644
--- /dev/null
+++ b/lld/test/COFF/stack-drectve.s
@@ -0,0 +1,16 @@
+# REQUIRES: x86
+# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-win32 %s -o %t.obj
+# RUN: lld-link /out:%t.exe /entry:main %t.obj
+# RUN: llvm-readobj --file-headers %t.exe | FileCheck %s
+
+# CHECK: SizeOfStackReserve: 20480
+# CHECK: SizeOfStackCommit: 12288
+
+	.text
+	.globl main
+main:
+	mov $42, %eax
+	ret
+
+	.section	.drectve,"yn"
+	.ascii	" -stack:0x5000,0x3000"