Index: lib/Target/X86/X86ISelLowering.cpp
===================================================================
--- lib/Target/X86/X86ISelLowering.cpp
+++ lib/Target/X86/X86ISelLowering.cpp
@@ -15046,6 +15046,7 @@
   assert(Subtarget->is64Bit() &&
          "LowerVAARG only handles 64-bit va_arg!");
   assert((Subtarget->isTargetLinux() ||
+          Subtarget->isTargetFreeBSD() ||
           Subtarget->isTargetDarwin()) &&
           "Unhandled target in LowerVAARG");
   assert(Op.getNode()->getNumOperands() == 4);