1 files changed, 84 insertions, 0 deletions
diff --git a/test/Unit/negdi2_test.c b/test/Unit/negdi2_test.c
new file mode 100644
index 000000000..4de9ab61d
--- /dev/null
+++ b/test/Unit/negdi2_test.c
@@ -0,0 +1,84 @@
+//===-- negdi2_test.c - Test __negdi2 -------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __negdi2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdio.h>
+
+// Returns: -a
+
+di_int __negdi2(di_int a);
+
+int test__negdi2(di_int a, di_int expected)
+{
+    di_int x = __negdi2(a);
+    if (x != expected)
+        printf("error in __negdi2: -0x%llX = 0x%llX, expected 0x%llX\n",
+               a, x, expected);
+    return x != expected;
+}
+
+char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
+
+int main()
+{
+    if (test__negdi2(0, 0))
+        return 1;
+    if (test__negdi2(1, -1))
+        return 1;
+    if (test__negdi2(-1, 1))
+        return 1;
+    if (test__negdi2(2, -2))
+        return 1;
+    if (test__negdi2(-2, 2))
+        return 1;
+    if (test__negdi2(3, -3))
+        return 1;
+    if (test__negdi2(-3, 3))
+        return 1;
+    if (test__negdi2(0x00000000FFFFFFFELL, 0xFFFFFFFF00000002LL))
+        return 1;
+    if (test__negdi2(0xFFFFFFFF00000002LL, 0x00000000FFFFFFFELL))
+        return 1;
+    if (test__negdi2(0x00000000FFFFFFFFLL, 0xFFFFFFFF00000001LL))
+        return 1;
+    if (test__negdi2(0xFFFFFFFF00000001LL, 0x00000000FFFFFFFFLL))
+        return 1;
+    if (test__negdi2(0x0000000100000000LL, 0xFFFFFFFF00000000LL))
+        return 1;
+    if (test__negdi2(0xFFFFFFFF00000000LL, 0x0000000100000000LL))
+        return 1;
+    if (test__negdi2(0x0000000200000000LL, 0xFFFFFFFE00000000LL))
+        return 1;
+    if (test__negdi2(0xFFFFFFFE00000000LL, 0x0000000200000000LL))
+        return 1;
+    if (test__negdi2(0x0000000300000000LL, 0xFFFFFFFD00000000LL))
+        return 1;
+    if (test__negdi2(0xFFFFFFFD00000000LL, 0x0000000300000000LL))
+        return 1;
+    if (test__negdi2(0x8000000000000000LL, 0x8000000000000000LL))
+        return 1;
+    if (test__negdi2(0x8000000000000001LL, 0x7FFFFFFFFFFFFFFFLL))
+        return 1;
+    if (test__negdi2(0x7FFFFFFFFFFFFFFFLL, 0x8000000000000001LL))
+        return 1;
+    if (test__negdi2(0xFFFFFFFE00000000LL, 0x0000000200000000LL))
+        return 1;
+    if (test__negdi2(0x0000000200000000LL, 0xFFFFFFFE00000000LL))
+        return 1;
+    if (test__negdi2(0xFFFFFFFF00000000LL, 0x0000000100000000LL))
+        return 1;
+    if (test__negdi2(0x0000000100000000LL, 0xFFFFFFFF00000000LL))
+        return 1;
+
+   return 0;
+}