Implement dependency analysis for the precompiled preamble. If any of

the files in the precompiled preamble have changed since it was build,
force the preamble to be rebuilt.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109937 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 0 deletions

diff --git a/include/clang/Basic/SourceManager.h b/include/clang/Basic/SourceManager.h
index b6a1ac4492..dc314f1f07 100644
--- a/include/clang/Basic/SourceManager.h
+++ b/include/clang/Basic/SourceManager.h
@@ -110,6 +110,12 @@ namespace SrcMgr {
       Buffer.setPointer(B);
       Buffer.setInt(false);
     }
+    
+    /// \brief Get the underlying buffer, returning NULL if the buffer is not
+    /// yet available.
+    const llvm::MemoryBuffer *getRawBuffer() const {
+      return Buffer.getPointer();
+    }
 
     /// \brief Replace the existing buffer (which will be deleted)
     /// with the given buffer.