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https://github.com/nlohmann/json.git
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Niels Lohmann
6548a65b46
With the builder of accept() in the same translation unit, GCC 16's interprocedural constant propagation cloned scan_string_vector without its plain argument (always string_plain()). The parse loop of json_document::parse() then called the clone, and GCC generated different code for the whole loop: 0.7-1.2 % more instructions (twitter, citm_catalog, instruments, tree-pretty, canada) and up to +13 % time on citm_catalog. NLOHMANN_VIEW_NOCLONE (GCC only) keeps the function as written; the instruction counts of parse() are then those of develop again. Signed-off-by: Niels Lohmann <mail@nlohmann.me>
32 lines
984 B
C++
32 lines
984 B
C++
// __ _____ _____ _____
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// __| | __| | | | JSON for Modern C++
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// | | |__ | | | | | | version 3.12.0
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// |_____|_____|_____|_|___| https://github.com/nlohmann/json
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//
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// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
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// SPDX-License-Identifier: MIT
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#pragma once
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// undefine the macros of detail/view/macro_scope.hpp (at the end of json_view.hpp)
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#undef NLOHMANN_VIEW_HAS_CPP_17
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#undef NLOHMANN_VIEW_LIKELY
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#undef NLOHMANN_VIEW_UNLIKELY
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#undef NLOHMANN_VIEW_ALWAYS_INLINE
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#undef NLOHMANN_VIEW_NOINLINE
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#undef NLOHMANN_VIEW_NOCLONE
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#undef NLOHMANN_VIEW_NODISCARD
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#undef NLOHMANN_VIEW_THROW
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#undef NLOHMANN_VIEW_LITTLE_ENDIAN
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#undef NLOHMANN_VIEW_REPEAT16
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#undef NLOHMANN_VIEW_REPEAT_SECOND_8
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#undef NLOHMANN_VIEW_REPEAT_FIRST_8
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#undef NLOHMANN_VIEW_NEON
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#undef NLOHMANN_VIEW_SSE2
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#undef NLOHMANN_VIEW_SSSE3
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#undef NLOHMANN_VIEW_SSSE3_DISPATCH
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#undef NLOHMANN_VIEW_SSSE3_TARGET
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#undef NLOHMANN_VIEW_VECTOR
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#undef NLOHMANN_VIEW_VECTOR_UTF8
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