diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 0e29e6d..d3b2c37 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -2794,6 +2794,10 @@
       getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
   Opts.ConstexprStepLimit =
       getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
+  Opts.EnableNewConstInterp =
+      Args.hasArg(OPT_fexperimental_new_constant_interpreter);
+  Opts.ForceNewConstInterp =
+      Args.hasArg(OPT_fforce_experimental_new_constant_interpreter);
   Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
   Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
   Opts.NumLargeByValueCopy =