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597f9761c3
One has to probe for platform capability prior to use with HWCAP, according to LoongArch documentation.
30 lines
1.0 KiB
C++
30 lines
1.0 KiB
C++
//===-- crc32_hw.cpp --------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "checksum.h"
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namespace scudo {
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#if defined(__CRC32__) || defined(__SSE4_2__) || defined(__ARM_FEATURE_CRC32)
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u32 computeHardwareCRC32(u32 Crc, uptr Data) {
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return static_cast<u32>(CRC32_INTRINSIC(Crc, Data));
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}
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#endif // defined(__CRC32__) || defined(__SSE4_2__) ||
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// defined(__ARM_FEATURE_CRC32)
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#if defined(__loongarch__)
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u32 computeHardwareCRC32(u32 Crc, uptr Data) {
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// The LoongArch CRC intrinsics have the two input arguments swapped, and
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// expect them to be signed.
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return static_cast<u32>(
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CRC32_INTRINSIC(static_cast<long>(Data), static_cast<int>(Crc)));
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}
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#endif // defined(__loongarch__)
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} // namespace scudo
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