Update compiler-rt aosp/master for 3.5 (r209699) rebase.
Change-Id: I158a30186f0faea2e2400e9dfdd878db2eb40e90
diff --git a/lib/builtins/ashrti3.c b/lib/builtins/ashrti3.c
new file mode 100644
index 0000000..f78205d
--- /dev/null
+++ b/lib/builtins/ashrti3.c
@@ -0,0 +1,46 @@
+/* ===-- ashrti3.c - Implement __ashrti3 -----------------------------------===
+ *
+ * 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 __ashrti3 for the compiler_rt library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include "int_lib.h"
+
+#ifdef CRT_HAS_128BIT
+
+/* Returns: arithmetic a >> b */
+
+/* Precondition: 0 <= b < bits_in_tword */
+
+COMPILER_RT_ABI ti_int
+__ashrti3(ti_int a, si_int b)
+{
+ const int bits_in_dword = (int)(sizeof(di_int) * CHAR_BIT);
+ twords input;
+ twords result;
+ input.all = a;
+ if (b & bits_in_dword) /* bits_in_dword <= b < bits_in_tword */
+ {
+ /* result.s.high = input.s.high < 0 ? -1 : 0 */
+ result.s.high = input.s.high >> (bits_in_dword - 1);
+ result.s.low = input.s.high >> (b - bits_in_dword);
+ }
+ else /* 0 <= b < bits_in_dword */
+ {
+ if (b == 0)
+ return a;
+ result.s.high = input.s.high >> b;
+ result.s.low = (input.s.high << (bits_in_dword - b)) | (input.s.low >> b);
+ }
+ return result.all;
+}
+
+#endif /* CRT_HAS_128BIT */
