1//===-- Memcpy implementation -----------------------------------*- C++ -*-===//
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#ifndef LLVM_LIBC_SRC_STRING_MEMORY_UTILS_INLINE_MEMCPY_H
10#define LLVM_LIBC_SRC_STRING_MEMORY_UTILS_INLINE_MEMCPY_H
11
12#include "src/__support/macros/config.h" // LIBC_INLINE
13#include "src/__support/macros/properties/architectures.h" // LIBC_TARGET_ARCH_IS_
14#include "src/string/memory_utils/utils.h" // Ptr, CPtr
15
16#include <stddef.h> // size_t
17
18#if defined(LIBC_COPT_MEMCPY_USE_EMBEDDED_TINY)
19#include "src/string/memory_utils/generic/byte_per_byte.h"
20#define LIBC_SRC_STRING_MEMORY_UTILS_MEMCPY inline_memcpy_byte_per_byte
21#elif defined(LIBC_TARGET_ARCH_IS_X86)
22#include "src/string/memory_utils/x86_64/inline_memcpy.h"
23#define LIBC_SRC_STRING_MEMORY_UTILS_MEMCPY \
24 inline_memcpy_x86_maybe_interpose_repmovsb
25#elif defined(LIBC_TARGET_ARCH_IS_AARCH64)
26#include "src/string/memory_utils/aarch64/inline_memcpy.h"
27#define LIBC_SRC_STRING_MEMORY_UTILS_MEMCPY inline_memcpy_aarch64
28#elif defined(LIBC_TARGET_ARCH_IS_ANY_RISCV)
29#include "src/string/memory_utils/riscv/inline_memcpy.h"
30#define LIBC_SRC_STRING_MEMORY_UTILS_MEMCPY inline_memcpy_riscv
31#elif defined(LIBC_TARGET_ARCH_IS_ARM)
32#include "src/string/memory_utils/generic/byte_per_byte.h"
33#define LIBC_SRC_STRING_MEMORY_UTILS_MEMCPY inline_memcpy_byte_per_byte
34#elif defined(LIBC_TARGET_ARCH_IS_GPU)
35#include "src/string/memory_utils/generic/builtin.h"
36#define LIBC_SRC_STRING_MEMORY_UTILS_MEMCPY inline_memcpy_builtin
37#else
38#error "Unsupported architecture"
39#endif
40
41namespace LIBC_NAMESPACE {
42
43[[gnu::flatten]] LIBC_INLINE void
44inline_memcpy(void *__restrict dst, const void *__restrict src, size_t count) {
45 LIBC_SRC_STRING_MEMORY_UTILS_MEMCPY(dst: reinterpret_cast<Ptr>(dst),
46 src: reinterpret_cast<CPtr>(src), count);
47}
48
49} // namespace LIBC_NAMESPACE
50
51#endif // LLVM_LIBC_SRC_STRING_MEMORY_UTILS_INLINE_MEMCPY_H
52

source code of libc/src/string/memory_utils/inline_memcpy.h