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

Library import 241016-1210

1 files changed, 23 insertions, 21 deletions

diff --git a/contrib/libs/cxxsupp/builtins/parityti2.c b/contrib/libs/cxxsupp/builtins/parityti2.c
index 5a4fe49248..011c8dd455 100644
--- a/contrib/libs/cxxsupp/builtins/parityti2.c
+++ b/contrib/libs/cxxsupp/builtins/parityti2.c
@@ -1,29 +1,31 @@
-/* ===-- parityti2.c - Implement __parityti2 -------------------------------===
- *
- *                     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 __parityti2 for the compiler_rt library.
- *
- * ===----------------------------------------------------------------------===
- */ 
+//===-- parityti2.c - Implement __parityti2 -------------------------------===//
+//
+// 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 __parityti2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
 
 #include "int_lib.h"
 
 #ifdef CRT_HAS_128BIT
 
-/* Returns: 1 if number of bits is odd else returns 0 */
+// Returns: 1 if number of bits is odd else returns 0
 
-COMPILER_RT_ABI si_int
-__parityti2(ti_int a)
-{
-    twords x;
-    x.all = a;
-    return __paritydi2(x.s.high ^ x.s.low);
+COMPILER_RT_ABI int __parityti2(ti_int a) {
+  twords x;
+  dwords x2;
+  x.all = a;
+  x2.all = x.s.high ^ x.s.low;
+  su_int x3 = x2.s.high ^ x2.s.low;
+  x3 ^= x3 >> 16;
+  x3 ^= x3 >> 8;
+  x3 ^= x3 >> 4;
+  return (0x6996 >> (x3 & 0xF)) & 1;
 }
 
-#endif /* CRT_HAS_128BIT */
+#endif // CRT_HAS_128BIT