//===-------------- lib/Support/Hashing.cpp -------------------------------===//

//

// 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 provides implementation bits for the LLVM common hashing

// infrastructure. Documentation and most of the other information is in the

// header file.

//

//===----------------------------------------------------------------------===//

#include "llvm/ADT/Hashing.h"

using namespace llvm;

// Provide a definition and static initializer for the fixed seed. This

// initializer should always be zero to ensure its value can never appear to be

// non-zero, even during dynamic initialization.

uint64_t llvm::hashing::detail::fixed_seed_override = 0;

// Implement the function for forced setting of the fixed seed.

// FIXME: Use atomic operations here so that there is no data race.

void llvm::set_fixed_execution_hash_seed(uint64_t fixed_value) {

  hashing::detail::fixed_seed_override = fixed_value;

}