Initial import of compiler-rt.
-
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@74292 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/addvdi3.c b/lib/addvdi3.c
new file mode 100644
index 0000000..88436e8
--- /dev/null
+++ b/lib/addvdi3.c
@@ -0,0 +1,36 @@
+//===-- addvdi3.c - Implement __addvdi3 -----------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements __addvdi3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdlib.h>
+
+// Returns: a + b
+
+// Effects: aborts if a + b overflows
+
+di_int
+__addvdi3(di_int a, di_int b)
+{
+ di_int s = a + b;
+ if (b >= 0)
+ {
+ if (s < a)
+ abort();
+ }
+ else
+ {
+ if (s >= a)
+ abort();
+ }
+ return s;
+}