1 files changed, 56 insertions, 0 deletions
diff --git a/test/Unit/negvsi2_test.c b/test/Unit/negvsi2_test.c
new file mode 100644
index 000000000..0480528c8
--- /dev/null
+++ b/test/Unit/negvsi2_test.c
@@ -0,0 +1,56 @@
+//===-- negvsi2_test.c - Test __negvsi2 -----------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __negvsi2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdio.h>
+
+// Returns: -a
+
+// Effects: aborts if -a overflows
+
+si_int __negvsi2(si_int a);
+
+int test__negvsi2(si_int a)
+{
+    si_int x = __negvsi2(a);
+    si_int expected = -a;
+    if (x != expected)
+        printf("error in __negvsi2(0x%X) = %d, expected %d\n", a, x, expected);
+    return x != expected;
+}
+
+int main()
+{
+//     if (test__negvsi2(0x80000000))  // should abort
+//         return 1;
+    if (test__negvsi2(0x00000000))
+        return 1;
+    if (test__negvsi2(0x00000001))
+        return 1;
+    if (test__negvsi2(0x00000002))
+        return 1;
+    if (test__negvsi2(0x7FFFFFFE))
+        return 1;
+    if (test__negvsi2(0x7FFFFFFF))
+        return 1;
+    if (test__negvsi2(0x80000001))
+        return 1;
+    if (test__negvsi2(0x80000002))
+        return 1;
+    if (test__negvsi2(0xFFFFFFFE))
+        return 1;
+    if (test__negvsi2(0xFFFFFFFF))
+        return 1;
+
+    return 0;
+}