outaout: align struct Symbol decrease size 56 to 48 bytes - #270
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GermanAizek wants to merge 1 commit into
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outaout: align struct Symbol decrease size 56 to 48 bytes#270GermanAizek wants to merge 1 commit into
GermanAizek wants to merge 1 commit into
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Affected classes (cache size before and after): - Symbol 56 -> 48 bytes References: - https://hpc.rz.rptu.de/Tutorials/AVX/alignment.shtml - https://wr.informatik.uni-hamburg.de/_media/teaching/wintersemester_2013_2014/epc-14-haase-svenhendrik-alignmentinc-presentation.pdf - https://en.wikipedia.org/wiki/Data_structure_alignment - https://stackoverflow.com/a/20882083 - https://zijishi.xyz/post/optimization-technique/learning-to-use-data-alignment/
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If you know how to use pahole, then you can view the object files in release, debug, non-optimized debug, and so on. By default, C/C++ compilers do not change the size of structures until the programmer himself specifies the packing or alignment attribute (keyword).
Affected structs (cache size before and after):
References:
https://hpc.rz.rptu.de/Tutorials/AVX/alignment.shtml
https://wr.informatik.uni-hamburg.de/_media/teaching/wintersemester_2013_2014/epc-14-haase-svenhendrik-alignmentinc-presentation.pdf
https://en.wikipedia.org/wiki/Data_structure_alignment
https://stackoverflow.com/a/20882083
https://zijishi.xyz/post/optimization-technique/learning-to-use-data-alignment/