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Adding two #define constants is less common than performing & and | operations on them, so put the addition first to reduce the set of cases that have to be considered in detail. At the same time, add & and | patterns for both arguments of +, to account for commutativity and obtain more results. Running time is divided by 3 when applying this to the whole kernel on my laptop with an Intel i5-6200U CPU. Signed-off-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.