1 files changed, 62 insertions, 0 deletions
diff --git a/test/builtins/Unit/moddi3_test.c b/test/builtins/Unit/moddi3_test.c
new file mode 100644
index 000000000000..9f6801d6f41b
--- /dev/null
+++ b/test/builtins/Unit/moddi3_test.c
@@ -0,0 +1,62 @@
+//===-- moddi3_test.c - Test __moddi3 -------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __moddi3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdio.h>
+
+// Returns: a % b
+
+di_int __moddi3(di_int a, di_int b);
+
+int test__moddi3(di_int a, di_int b, di_int expected)
+{
+    di_int x = __moddi3(a, b);
+    if (x != expected)
+        printf("error in __moddi3: %lld %% %lld = %lld, expected %lld\n",
+               a, b, x, expected);
+    return x != expected;
+}
+
+char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
+
+int main()
+{
+    if (test__moddi3(0, 1, 0))
+        return 1;
+    if (test__moddi3(0, -1, 0))
+        return 1;
+
+    if (test__moddi3(5, 3, 2))
+        return 1;
+    if (test__moddi3(5, -3, 2))
+        return 1;
+    if (test__moddi3(-5, 3, -2))
+        return 1;
+    if (test__moddi3(-5, -3, -2))
+        return 1;
+
+    if (test__moddi3(0x8000000000000000LL, 1, 0x0LL))
+        return 1;
+    if (test__moddi3(0x8000000000000000LL, -1, 0x0LL))
+        return 1;
+    if (test__moddi3(0x8000000000000000LL, 2, 0x0LL))
+        return 1;
+    if (test__moddi3(0x8000000000000000LL, -2, 0x0LL))
+        return 1;
+    if (test__moddi3(0x8000000000000000LL, 3, -2))
+        return 1;
+    if (test__moddi3(0x8000000000000000LL, -3, -2))
+        return 1;
+
+    return 0;
+}