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d3a0b96818
Optimize `__read_64bit_c0_split' and reduce the instruction count by 1, observing that a DSLL/DSRA pair by 32, is equivalent to SLL by 0, which architecturally truncates the value requested to 32 bits on 64-bit MIPS hardware regardless of whether the input operand is or is not a properly sign-extended 32-bit value. Signed-off-by: Maciej W. Rozycki <macro@imgtec.com> Reviewed-by: James Hogan <jhogan@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/17399/ Signed-off-by: James Hogan <jhogan@kernel.org> |
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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.