1 files changed, 16 insertions, 1 deletions
diff --git a/clang/include/clang-c/Index.h b/clang/include/clang-c/Index.h
index 7f569d28834..bb76c564cc9 100644
--- a/clang/include/clang-c/Index.h
+++ b/clang/include/clang-c/Index.h
@@ -713,7 +713,22 @@ enum CXTranslationUnit_Flags {
    * introduces some overhead to reparsing but improves the performance of
    * code-completion operations.
    */
-  CXTranslationUnit_CacheCompletionResults = 0x08
+  CXTranslationUnit_CacheCompletionResults = 0x08,
+  /**
+   * \brief Enable precompiled preambles in C++.
+   *
+   * Note: this is a *temporary* option that is available only while
+   * we are testing C++ precompiled preamble support.
+   */
+  CXTranslationUnit_CXXPrecompiledPreamble = 0x10,
+
+  /**
+   * \brief Enabled chained precompiled preambles in C++.
+   *
+   * Note: this is a *temporary* option that is available only while
+   * we are testing C++ precompiled preamble support.
+   */
+  CXTranslationUnit_CXXChainedPCH = 0x20
 };
 
 /**