diff --git a/lib/udivti3.c b/lib/udivti3.c
new file mode 100644
index 0000000..785da05
--- /dev/null
+++ b/lib/udivti3.c
@@ -0,0 +1,28 @@
+//===-- udivti3.c - Implement __udivti3 -----------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements __udivti3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#if __x86_64
+
+#include "int_lib.h"
+
+tu_int __udivmodti4(tu_int a, tu_int b, tu_int* rem);
+
+// Returns: a / b
+
+tu_int
+__udivti3(tu_int a, tu_int b)
+{
+    return __udivmodti4(a, b, 0);
+}
+
+#endif