[committed] line-map.h: add source_range::from_locations

[David Malcolm]

Successfully bootstrapped&regrtested on x86_64-pc-linux-gnu.

Committed to trunk as r239711.

libcpp/ChangeLog:
        * include/line-map.h (source_range::from_locations): New method.
---
 libcpp/include/line-map.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/libcpp/include/line-map.h b/libcpp/include/line-map.h
index f65931c..a2ed008 100644
--- a/libcpp/include/line-map.h
+++ b/libcpp/include/line-map.h
@@ -296,6 +296,16 @@ struct GTY(()) source_range
     return result;
   }
 
+  /* Make a source_range from a pair of source_location.  */
+  static source_range from_locations (source_location start,
+                                     source_location finish)
+  {
+    source_range result;
+    result.m_start = start;
+    result.m_finish = finish;
+    return result;
+  }
+
   /* Is there any part of this range on the given line?  */
   bool intersects_line_p (const char *file, int line) const;
 };
-- 
1.8.5.3