diff options
Diffstat (limited to 'src/common/bit_field.h')
| -rw-r--r-- | src/common/bit_field.h | 42 |
1 files changed, 12 insertions, 30 deletions
diff --git a/src/common/bit_field.h b/src/common/bit_field.h index 0f0661172..7e1df62b1 100644 --- a/src/common/bit_field.h +++ b/src/common/bit_field.h @@ -1,39 +1,12 @@ -// Licensed under GPLv2 or any later version -// Refer to the license.txt file included. - -// Copyright 2014 Tony Wasserka -// All rights reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above copyright -// notice, this list of conditions and the following disclaimer in the -// documentation and/or other materials provided with the distribution. -// * Neither the name of the owner nor the names of its contributors may -// be used to endorse or promote products derived from this software -// without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// SPDX-FileCopyrightText: 2014 Tony Wasserka +// SPDX-FileCopyrightText: 2014 Dolphin Emulator Project +// SPDX-License-Identifier: BSD-3-Clause AND GPL-2.0-or-later #pragma once #include <cstddef> #include <limits> #include <type_traits> -#include "common/common_funcs.h" #include "common/swap.h" /* @@ -173,7 +146,16 @@ public: } constexpr void Assign(const T& value) { +#ifdef _MSC_VER storage = static_cast<StorageType>((storage & ~mask) | FormatValue(value)); +#else + // Explicitly reload with memcpy to avoid compiler aliasing quirks + // regarding optimization: GCC/Clang clobber chained stores to + // different bitfields in the same struct with the last value. + StorageTypeWithEndian storage_; + std::memcpy(&storage_, &storage, sizeof(storage_)); + storage = static_cast<StorageType>((storage_ & ~mask) | FormatValue(value)); +#endif } [[nodiscard]] constexpr T Value() const { |