Merge pull request #10502 from ydb-platform/mergelibs-241016-1210

Library import 241016-1210

1 files changed, 32 insertions, 0 deletions

diff --git a/contrib/libs/cxxsupp/builtins/divmodti4.c b/contrib/libs/cxxsupp/builtins/divmodti4.c
new file mode 100644
index 0000000000..b243ba4ef8
--- /dev/null
+++ b/contrib/libs/cxxsupp/builtins/divmodti4.c
@@ -0,0 +1,32 @@
+//===-- divmodti4.c - Implement __divmodti4 -------------------------------===//
+//
+// 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 __divmodti4 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+
+#ifdef CRT_HAS_128BIT
+
+// Returns: a / b, *rem = a % b
+
+COMPILER_RT_ABI ti_int __divmodti4(ti_int a, ti_int b, ti_int *rem) {
+  const int bits_in_tword_m1 = (int)(sizeof(ti_int) * CHAR_BIT) - 1;
+  ti_int s_a = a >> bits_in_tword_m1;                   // s_a = a < 0 ? -1 : 0
+  ti_int s_b = b >> bits_in_tword_m1;                   // s_b = b < 0 ? -1 : 0
+  a = (a ^ s_a) - s_a;                                  // negate if s_a == -1
+  b = (b ^ s_b) - s_b;                                  // negate if s_b == -1
+  s_b ^= s_a;                                           // sign of quotient
+  tu_int r;
+  ti_int q = (__udivmodti4(a, b, &r) ^ s_b) - s_b;      // negate if s_b == -1
+  *rem = (r ^ s_a) - s_a;                               // negate if s_a == -1
+  return q;
+}
+
+#endif // CRT_HAS_128BIT