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diff --git a/contrib/llvm-project/compiler-rt/lib/builtins/ashrdi3.c b/contrib/llvm-project/compiler-rt/lib/builtins/ashrdi3.c
new file mode 100644
index 000000000000..c0879b8b252d
--- /dev/null
+++ b/contrib/llvm-project/compiler-rt/lib/builtins/ashrdi3.c
@@ -0,0 +1,40 @@
+//===-- ashrdi3.c - Implement __ashrdi3 -----------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements __ashrdi3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+
+// Returns: arithmetic a >> b
+
+// Precondition:  0 <= b < bits_in_dword
+
+COMPILER_RT_ABI di_int __ashrdi3(di_int a, int b) {
+  const int bits_in_word = (int)(sizeof(si_int) * CHAR_BIT);
+  dwords input;
+  dwords result;
+  input.all = a;
+  if (b & bits_in_word) /* bits_in_word <= b < bits_in_dword */ {
+    // result.s.high = input.s.high < 0 ? -1 : 0
+    result.s.high = input.s.high >> (bits_in_word - 1);
+    result.s.low = input.s.high >> (b - bits_in_word);
+  } else /* 0 <= b < bits_in_word */ {
+    if (b == 0)
+      return a;
+    result.s.high = input.s.high >> b;
+    result.s.low =
+        ((su_int)input.s.high << (bits_in_word - b)) | (input.s.low >> b);
+  }
+  return result.all;
+}
+
+#if defined(__ARM_EABI__)
+COMPILER_RT_ALIAS(__ashrdi3, __aeabi_lasr)
+#endif