6f8d826b74
Codify that we use lower_case for readability-identifier-naming.ConstexprFunctionCase and then fix the 11 violations (rather than codify UPPER_CASE and have to fix the 170 violations).
71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
//===-- Bcmp implementation for aarch64 -------------------------*- 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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#ifndef LIBC_SRC_STRING_MEMORY_UTILS_AARCH64_INLINE_BCMP_H
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#define LIBC_SRC_STRING_MEMORY_UTILS_AARCH64_INLINE_BCMP_H
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#include "src/__support/macros/attributes.h" // LIBC_INLINE
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#include "src/__support/macros/optimization.h" // LIBC_UNLIKELY
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#include "src/string/memory_utils/op_aarch64.h"
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#include "src/string/memory_utils/op_generic.h"
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#include "src/string/memory_utils/utils.h" // Ptr, CPtr
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#include <stddef.h> // size_t
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namespace LIBC_NAMESPACE {
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[[maybe_unused]] LIBC_INLINE BcmpReturnType inline_bcmp_aarch64(CPtr p1,
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CPtr p2,
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size_t count) {
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if (LIBC_LIKELY(count <= 32)) {
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if (LIBC_UNLIKELY(count >= 16)) {
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return aarch64::Bcmp<16>::head_tail(p1, p2, count);
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}
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switch (count) {
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case 0:
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return BcmpReturnType::zero();
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case 1:
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return generic::Bcmp<uint8_t>::block(p1, p2);
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case 2:
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return generic::Bcmp<uint16_t>::block(p1, p2);
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case 3:
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return generic::Bcmp<uint16_t>::head_tail(p1, p2, count);
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case 4:
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return generic::Bcmp<uint32_t>::block(p1, p2);
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case 5:
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case 6:
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case 7:
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return generic::Bcmp<uint32_t>::head_tail(p1, p2, count);
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case 8:
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return generic::Bcmp<uint64_t>::block(p1, p2);
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case 9:
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case 10:
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case 11:
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case 12:
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case 13:
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case 14:
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case 15:
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return generic::Bcmp<uint64_t>::head_tail(p1, p2, count);
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}
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}
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if (count <= 64)
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return aarch64::Bcmp<32>::head_tail(p1, p2, count);
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// Aligned loop if > 256, otherwise normal loop
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if (LIBC_UNLIKELY(count > 256)) {
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if (auto value = aarch64::Bcmp<32>::block(p1, p2))
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return value;
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align_to_next_boundary<16, Arg::P1>(p1, p2, count);
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}
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return aarch64::Bcmp<32>::loop_and_tail(p1, p2, count);
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}
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} // namespace LIBC_NAMESPACE
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#endif // LIBC_SRC_STRING_MEMORY_UTILS_AARCH64_INLINE_BCMP_H
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