diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -3674,8 +3674,6 @@
         options::OPT_ffixed_x18,
         options::OPT_mglobal_merge,
         options::OPT_mno_global_merge,
-        options::OPT_mred_zone,
-        options::OPT_mno_red_zone,
         options::OPT_Wa_COMMA,
         options::OPT_Xassembler,
         options::OPT_mllvm,