1 files changed, 26 insertions, 0 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/builtins/moddi3.c b/contrib/llvm-project/compiler-rt/lib/builtins/moddi3.c
new file mode 100644
index 000000000000..92b0996077c6
--- /dev/null
+++ b/contrib/llvm-project/compiler-rt/lib/builtins/moddi3.c
@@ -0,0 +1,26 @@
+//===-- moddi3.c - Implement __moddi3 -------------------------------------===//
+//
+// 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 __moddi3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+
+// Returns: a % b
+
+COMPILER_RT_ABI di_int __moddi3(di_int a, di_int b) {
+  const int bits_in_dword_m1 = (int)(sizeof(di_int) * CHAR_BIT) - 1;
+  di_int s = b >> bits_in_dword_m1; // s = b < 0 ? -1 : 0
+  b = (b ^ s) - s;                  // negate if s == -1
+  s = a >> bits_in_dword_m1;        // s = a < 0 ? -1 : 0
+  a = (a ^ s) - s;                  // negate if s == -1
+  du_int r;
+  __udivmoddi4(a, b, &r);
+  return ((di_int)r ^ s) - s; // negate if s == -1
+}