diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -1715,10 +1715,10 @@
            "alloca, which are of greater size than ssp-buffer-size (default: 8 bytes). "
            "All variable sized calls to alloca are considered vulnerable">;
 def ftrivial_auto_var_init : Joined<["-"], "ftrivial-auto-var-init=">, Group<f_Group>,
-  Flags<[CC1Option]>, HelpText<"Initialize trivial automatic stack variables: uninitialized (default)"
+  Flags<[CC1Option, CoreOption]>, HelpText<"Initialize trivial automatic stack variables: uninitialized (default)"
   " | pattern">, Values<"uninitialized,pattern">;
 def enable_trivial_var_init_zero : Joined<["-"], "enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang">,
-  Flags<[CC1Option]>,
+  Flags<[CC1Option, CoreOption]>,
   HelpText<"Trivial automatic variable initialization to zero is only here for benchmarks, it'll eventually be removed, and I'm OK with that because I'm only using it to benchmark">;
 def fstandalone_debug : Flag<["-"], "fstandalone-debug">, Group<f_Group>, Flags<[CoreOption]>,
   HelpText<"Emit full debug info for all types used by the program">;
diff --git a/clang/test/Driver/cl-options.c b/clang/test/Driver/cl-options.c
--- a/clang/test/Driver/cl-options.c
+++ b/clang/test/Driver/cl-options.c
@@ -653,6 +653,8 @@
 // RUN:     -fcs-profile-generate \
 // RUN:     -fcs-profile-generate=dir \
 // RUN:     -ftime-trace \
+// RUN:     -ftrivial-auto-var-init=zero \
+// RUN:     -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang \
 // RUN:     --version \
 // RUN:     -Werror /Zs -- %s 2>&1