Add a frontend option -chained-pch and don't pass an active PCH reader to the PCH writer if it is not set, preventing creation of chained PCH files. Since the reader is so far unused, effectively no functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107936 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/include/clang/Frontend/FrontendOptions.h b/include/clang/Frontend/FrontendOptions.h
index 0f4538976d..4010ea6dd7 100644
--- a/include/clang/Frontend/FrontendOptions.h
+++ b/include/clang/Frontend/FrontendOptions.h
@@ -62,6 +62,9 @@ public:
   unsigned RelocatablePCH : 1;             ///< When generating PCH files,
                                            /// instruct the PCH writer to create
                                            /// relocatable PCH files.
+  unsigned ChainedPCH : 1;                 ///< When generating PCH files,
+                                           /// instruct the PCH writer to create
+                                           /// chained PCH files.
   unsigned ShowHelp : 1;                   ///< Show the -help text.
   unsigned ShowMacrosInCodeCompletion : 1; ///< Show macros in code completion
                                            /// results.
@@ -114,6 +117,7 @@ public:
     ProgramAction = frontend::ParseSyntaxOnly;
     ActionName = "";
     RelocatablePCH = 0;
+    ChainedPCH = 0;
     ShowHelp = 0;
     ShowMacrosInCodeCompletion = 0;
     ShowCodePatternsInCodeCompletion = 0;