1 files changed, 3 insertions, 0 deletions
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 757c0ce..40e6dd8 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -3115,6 +3115,9 @@ static void CollectArgsForIntegratedAssembler(Compilation &C,
       } else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
                  Value.startswith("-mhwdiv") || Value.startswith("-march")) {
         // Do nothing, we'll validate it later.
+      } else if (Value == "-defsym") {
+          CmdArgs.push_back(Value.data());
+          TakeNextArg = true;
       } else {
         D.Diag(diag::err_drv_unsupported_option_argument)
             << A->getOption().getName() << Value;