29 lines
1.2 KiB
C++
29 lines
1.2 KiB
C++
//===-------------- 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;
|
|
}
|