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Message #30993
Re: [PATCH] Fix some performance issues
Hi,
Ok, I'll keep the patchset synchronized with the master branch, for future inclusion. When will the feature freeze take effect ?
I agree my patchset has no real impact on the performance. I mainly wanted to test clang-tidy on a consistent source code base. I also think that keeping automated checks empty of warning can help to improve the overall code quality.
Regards,
--
Camille
Le lun. 25 sept. 2017 à 16:21, Wayne Stambaugh <stambaughw@xxxxxxxxx> a écrit :
On 9/25/2017 4:07 AM, Maciej Sumiński wrote:
Hi Camille, I think the attached patches are sensible, even though I hope most compilers apply optimizations to avoid performance penalties whenever possible.
I agree although I'm not sure about the compiler optimization. A quick look at the patches and I'm not sure the performance gains will be that noticeable. Most of the changes are in code that is called once on demand in response to a user request as opposed to the drawing or drc code where large numbers of calls happen frequently. That being said, we really should be doing a better job of not passing entire objects on the stack unless there is a good reason to do so.
If the attached patches are autogenerated, then I would kindly ask you to generate them when we reach the feature freeze stage. There are a few branches that await to be merged and I am not sure whether your patches would not create too many conflicts. During the feature freeze we anticipate the code changes will not be as disruptive as they are now.
I second this. There are quite a few outstanding patches that will likely have enough conflicts so I would rather not pile more on top of that.
Regards, Orson On 09/23/2017 12:17 PM, Camille 019 wrote:
Hi all, I recently play with clang-tidy on the KiCad source code. Here is a set of 2 patch which fix the unnecessary-copy-initialization<https://clang.llvm.org/extra/clang-tidy/checks/performance-unnecessary-copy-initialization.html> and unnecessary-value-param<https://clang.llvm.org/extra/clang-tidy/checks/performance-unnecessary-value-param.html> checks. I will run more performance checks in the future. The next two: - for-range-copy<https://clang.llvm.org/extra/clang-tidy/checks/performance-for-range-copy.html> - type-promotion-in-math-fn<https://clang.llvm.org/extra/clang-tidy/checks/performance-type-promotion-in-math-fn.html> Best regards, -- Camille _______________________________________________ Mailing list: https://launchpad.net/~kicad-developers Post to : kicad-developers@xxxxxxxxxxxxxxxxxxx<mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx> Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
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