diff --git a/src/compiler/glsl_types.h b/src/compiler/glsl_types.h
index 62af1496daa..b98ce66c48d 100644
--- a/src/compiler/glsl_types.h
+++ b/src/compiler/glsl_types.h
@@ -478,6 +478,14 @@ struct glsl_type {
       return (base_type == GLSL_TYPE_UINT) || (base_type == GLSL_TYPE_INT);
    }
 
+   /**
+    * Query whether or not a type is a 64-bit integer.
+    */
+   bool is_integer_64() const
+   {
+      return base_type == GLSL_TYPE_UINT64 || base_type == GLSL_TYPE_INT64;
+   }
+
    /**
     * Query whether or not a type is a 32-bit or 64-bit integer
     */