vendor/compiler-rt/compiler-rt-r224034

1 files changed, 57 insertions, 0 deletions

diff --git a/test/builtins/Unit/negvdi2_test.c b/test/builtins/Unit/negvdi2_test.c
new file mode 100644
index 0000000000000..9617b95ff1058
--- /dev/null
+++ b/test/builtins/Unit/negvdi2_test.c
@@ -0,0 +1,57 @@
+//===-- negvdi2_test.c - Test __negvdi2 -----------------------------------===//
+//
+//                     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 __negvdi2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdio.h>
+
+// Returns: -a
+
+// Effects: aborts if -a overflows
+
+di_int __negvdi2(di_int a);
+
+int test__negvdi2(di_int a)
+{
+    di_int x = __negvdi2(a);
+    di_int expected = -a;
+    if (x != expected)
+        printf("error in __negvdi2(0x%llX) = %lld, expected %lld\n",
+               a, x, expected);
+    return x != expected;
+}
+
+int main()
+{
+//     if (test__negvdi2(0x8000000000000000LL))  // should abort
+//         return 1;
+    if (test__negvdi2(0x0000000000000000LL))
+        return 1;
+    if (test__negvdi2(0x0000000000000001LL))
+        return 1;
+    if (test__negvdi2(0x0000000000000002LL))
+        return 1;
+    if (test__negvdi2(0x7FFFFFFFFFFFFFFELL))
+        return 1;
+    if (test__negvdi2(0x7FFFFFFFFFFFFFFFLL))
+        return 1;
+    if (test__negvdi2(0x8000000000000001LL))
+        return 1;
+    if (test__negvdi2(0x8000000000000002LL))
+        return 1;
+    if (test__negvdi2(0xFFFFFFFFFFFFFFFELL))
+        return 1;
+    if (test__negvdi2(0xFFFFFFFFFFFFFFFFLL))
+        return 1;
+
+    return 0;
+}