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1//===-- parityti2.c - Implement __parityti2 -------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This file implements __parityti2 for the compiler_rt library.10//11//===----------------------------------------------------------------------===//12 13#include "int_lib.h"14 15#ifdef CRT_HAS_128BIT16 17// Returns: 1 if number of bits is odd else returns 018 19COMPILER_RT_ABI int __parityti2(ti_int a) {20 twords x;21 dwords x2;22 x.all = a;23 x2.all = x.s.high ^ x.s.low;24 su_int x3 = x2.s.high ^ x2.s.low;25 x3 ^= x3 >> 16;26 x3 ^= x3 >> 8;27 x3 ^= x3 >> 4;28 return (0x6996 >> (x3 & 0xF)) & 1;29}30 31#endif // CRT_HAS_128BIT32