llvm-project
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1//===-- Implementation of memset_explicit ---------------------------------===//
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-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "src/string/memset_explicit.h"10#include "src/__support/common.h"11#include "src/string/memory_utils/inline_memset.h"12
13namespace LIBC_NAMESPACE {14
15[[gnu::noinline]] LLVM_LIBC_FUNCTION(void *, memset_explicit,16(void *dst, int value, size_t count)) {17// Use the inline memset function to set the memory.18inline_memset(dst, static_cast<uint8_t>(value), count);19// avoid dead store elimination20// The asm itself should also be sufficient to behave as a compiler barrier.21asm("" : : "r"(dst) : "memory");22return dst;23}
24
25} // namespace LIBC_NAMESPACE26