[libclang] Allow skipping warnings from all included files

Depending on the included files and the used warning flags, e.g. -
Weverything, a huge number of warnings can be reported for included
files. As processing that many diagnostics comes with a performance
impact and not all clients are interested in those diagnostics, add a
flag to skip them.

Differential Revision: https://reviews.llvm.org/D48116

llvm-svn: 363067

1 files changed, 12 insertions, 2 deletions

diff --git a/clang/include/clang-c/Index.h b/clang/include/clang-c/Index.h
index a5ed91dd1cb..07e71bd48d0 100644
--- a/clang/include/clang-c/Index.h
+++ b/clang/include/clang-c/Index.h
@@ -32,7 +32,7 @@
  * compatible, thus CINDEX_VERSION_MAJOR is expected to remain stable.
  */
 #define CINDEX_VERSION_MAJOR 0
-#define CINDEX_VERSION_MINOR 58
+#define CINDEX_VERSION_MINOR 59
 
 #define CINDEX_VERSION_ENCODE(major, minor) ( \
       ((major) * 10000)                       \
@@ -1346,7 +1346,17 @@ enum CXTranslationUnit_Flags {
   /**
    * Used to indicate that implicit attributes should be visited.
    */
-  CXTranslationUnit_VisitImplicitAttributes = 0x2000
+  CXTranslationUnit_VisitImplicitAttributes = 0x2000,
+
+  /**
+   * Used to indicate that non-errors from included files should be ignored.
+   *
+   * If set, clang_getDiagnosticSetFromTU() will not report e.g. warnings from
+   * included files anymore. This speeds up clang_getDiagnosticSetFromTU() for
+   * the case where these warnings are not of interest, as for an IDE for
+   * example, which typically shows only the diagnostics in the main file.
+   */
+  CXTranslationUnit_IgnoreNonErrorsFromIncludedFiles = 0x4000
 };
 
 /**