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/subvsi3.c b/lib/subvsi3.c
new file mode 100644
index 0000000..53c141b
--- /dev/null
+++ b/lib/subvsi3.c
@@ -0,0 +1,36 @@
+//===-- subvsi3.c - Implement __subvsi3 -----------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements __subvsi3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdlib.h>
+
+// Returns: a - b
+
+// Effects: aborts if a - b overflows
+
+si_int
+__subvsi3(si_int a, si_int b)
+{
+ si_int s = a - b;
+ if (b >= 0)
+ {
+ if (s > a)
+ abort();
+ }
+ else
+ {
+ if (s <= a)
+ abort();
+ }
+ return s;
+}