diff --git a/include/clang/Driver/CC1Options.td b/include/clang/Driver/CC1Options.td
index 6de5bf1..363ea7b 100644
--- a/include/clang/Driver/CC1Options.td
+++ b/include/clang/Driver/CC1Options.td
@@ -131,6 +131,8 @@
 def g : Flag<"-g">, HelpText<"Generate source level debug information">;
 def fcatch_undefined_behavior : Flag<"-fcatch-undefined-behavior">,
     HelpText<"Generate runtime checks for undefined behavior.">;
+def flimit_debug_info : Flag<"-flimit-debug-info">,
+  HelpText<"Limit debug information produced to reduce size of debug binary">;
 def fno_common : Flag<"-fno-common">,
   HelpText<"Compile common globals like normal definitions">;
 def no_implicit_float : Flag<"-no-implicit-float">,
diff --git a/include/clang/Driver/Options.td b/include/clang/Driver/Options.td
index 95b84d3..fed03f7 100644
--- a/include/clang/Driver/Options.td
+++ b/include/clang/Driver/Options.td
@@ -288,6 +288,8 @@
 def fkeep_inline_functions : Flag<"-fkeep-inline-functions">, Group<clang_ignored_f_Group>;
 def flat__namespace : Flag<"-flat_namespace">;
 def flax_vector_conversions : Flag<"-flax-vector-conversions">, Group<f_Group>;
+def flimit_debug_info : Flag<"-flimit-debug-info">, Group<f_Group>, 
+  HelpText<"Limit debug information produced to reduce size of debug binary">;
 def flimited_precision_EQ : Joined<"-flimited-precision=">, Group<f_Group>;
 def flto : Flag<"-flto">, Group<f_Group>;
 def fmacro_backtrace_limit_EQ : Joined<"-fmacro-backtrace-limit=">, 
diff --git a/include/clang/Frontend/CodeGenOptions.h b/include/clang/Frontend/CodeGenOptions.h
index b3f5709..ffaaedc 100644
--- a/include/clang/Frontend/CodeGenOptions.h
+++ b/include/clang/Frontend/CodeGenOptions.h
@@ -40,6 +40,7 @@
                                   /// aliases to base ctors when possible.
   unsigned DataSections      : 1; /// Set when -fdata-sections is enabled
   unsigned DebugInfo         : 1; /// Should generate debug info (-g).
+  unsigned LimitDebugInfo    : 1; /// Limit generated debug info to reduce size.
   unsigned DisableFPElim     : 1; /// Set when -fomit-frame-pointer is enabled.
   unsigned DisableLLVMOpts   : 1; /// Don't run any optimizations, for use in
                                   /// getting .bc files that correspond to the
@@ -109,6 +110,7 @@
     CXXCtorDtorAliases = 0;
     DataSections = 0;
     DebugInfo = 0;
+    LimitDebugInfo = 0;
     DisableFPElim = 0;
     DisableLLVMOpts = 0;
     DisableRedZone = 0;