1 files changed, 63 insertions, 0 deletions
diff --git a/test/Unit/umodti3_test.c b/test/Unit/umodti3_test.c
new file mode 100644
index 000000000..affeacedd
--- /dev/null
+++ b/test/Unit/umodti3_test.c
@@ -0,0 +1,63 @@
+//===-- umodti3_test.c - Test __umodti3 -----------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __umodti3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#if __x86_64
+
+#include "int_lib.h"
+#include <stdio.h>
+
+// Returns: a % b
+
+tu_int __umodti3(tu_int a, tu_int b);
+
+int test__umodti3(tu_int a, tu_int b, tu_int expected_r)
+{
+    tu_int r = __umodti3(a, b);
+    if (r != expected_r)
+    {
+        utwords at;
+        at.all = a;
+        utwords bt;
+        bt.all = b;
+        utwords rt;
+        rt.all = r;
+        utwords expected_rt;
+        expected_rt.all = expected_r;
+        printf("error in __umodti3: 0x%llX%.16llX %% 0x%llX%.16llX = "
+               "0x%llX%.16llX, expected 0x%llX%.16llX\n",
+               at.high, at.low, bt.high, bt.low, rt.high, rt.low,
+               expected_rt.high, expected_rt.low);
+    }
+    return r != expected_r;
+}
+
+#endif
+
+int main()
+{
+#if __x86_64
+    if (test__umodti3(0, 1, 0))
+        return 1;
+    if (test__umodti3(2, 1, 0))
+        return 1;
+    if (test__umodti3(make_tu(0x8000000000000000uLL, 0), 1, 0x0uLL))
+        return 1;
+    if (test__umodti3(make_tu(0x8000000000000000uLL, 0), 2, 0x0uLL))
+        return 1;
+    if (test__umodti3(make_tu(0xFFFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFFuLL),
+                      2, 0x1uLL))
+        return 1;
+
+#endif
+    return 0;
+}