4 files changed, 18 insertions, 0 deletions

diff --git a/clang/include/clang-c/Index.h b/clang/include/clang-c/Index.h
index 236594ab7c3..88aaa385b98 100644
--- a/clang/include/clang-c/Index.h
+++ b/clang/include/clang-c/Index.h
@@ -328,6 +328,14 @@ CINDEX_LINKAGE CXSourceRange clang_getRange(CXSourceLocation begin,
                                             CXSourceLocation end);
 
 /**
+ * \brief Determine whether two ranges are equivalent.
+ *
+ * \returns non-zero if the ranges are the same, zero if they differ.
+ */
+CINDEX_LINKAGE unsigned clang_equalRanges(CXSourceRange range1,
+                                          CXSourceRange range2);
+
+/**
  * \brief Retrieve the file, line, column, and offset represented by
  * the given source location.
  *
diff --git a/clang/tools/libclang/CIndex.cpp b/clang/tools/libclang/CIndex.cpp
index 97d41c010f7..7838384f3bc 100644
--- a/clang/tools/libclang/CIndex.cpp
+++ b/clang/tools/libclang/CIndex.cpp
@@ -2786,6 +2786,14 @@ CXSourceRange clang_getRange(CXSourceLocation begin, CXSourceLocation end) {
                            begin.int_data, end.int_data };
   return Result;
 }
+
+unsigned clang_equalRanges(CXSourceRange range1, CXSourceRange range2)
+{
+  return range1.ptr_data[0] == range2.ptr_data[0]
+      && range1.ptr_data[1] == range2.ptr_data[1]
+      && range1.begin_int_data == range2.begin_int_data
+      && range1.end_int_data == range2.end_int_data;
+}
 } // end: extern "C"
 
 static void createNullLocation(CXFile *file, unsigned *line,
diff --git a/clang/tools/libclang/libclang.darwin.exports b/clang/tools/libclang/libclang.darwin.exports
index 87c52566acd..f174989e62e 100644
--- a/clang/tools/libclang/libclang.darwin.exports
+++ b/clang/tools/libclang/libclang.darwin.exports
@@ -36,6 +36,7 @@ _clang_disposeTranslationUnit
 _clang_enableStackTraces
 _clang_equalCursors
 _clang_equalLocations
+_clang_equalRanges
 _clang_equalTypes
 _clang_executeOnThread
 _clang_formatDiagnostic
diff --git a/clang/tools/libclang/libclang.exports b/clang/tools/libclang/libclang.exports
index f82c190afee..789a94b9954 100644
--- a/clang/tools/libclang/libclang.exports
+++ b/clang/tools/libclang/libclang.exports
@@ -36,6 +36,7 @@ clang_disposeTranslationUnit
 clang_enableStackTraces
 clang_equalCursors
 clang_equalLocations
+clang_equalRanges
 clang_equalTypes
 clang_executeOnThread
 clang_formatDiagnostic