Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/compiler-rt/lib/builtins/addvdi3.c

@@ -0,0 +1,36 @@
+/* ===-- addvdi3.c - Implement __addvdi3 -----------------------------------===
+ *
+ *                     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 implements __addvdi3 for the compiler_rt library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include "int_lib.h"
+
+/* Returns: a + b */
+
+/* Effects: aborts if a + b overflows */
+
+COMPILER_RT_ABI di_int
+__addvdi3(di_int a, di_int b)
+{
+    di_int s = (du_int) a + (du_int) b;
+    if (b >= 0)
+    {
+        if (s < a)
+            compilerrt_abort();
+    }
+    else
+    {
+        if (s >= a)
+            compilerrt_abort();
+    }
+    return s;
+}