Messages in this thread | | | From | Linus Torvalds <> | Date | Mon, 25 Jul 2022 13:40:58 -0700 | Subject | Re: Linux 5.19-rc8 |
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On Mon, Jul 25, 2022 at 1:35 PM Yury Norov <yury.norov@gmail.com> wrote: > > Here we have 2 ugly options - having pairs of almost identical > functions, or passing dummy variables. I decided that copy-pasting is > worse than abusing branch predictor.
The thing is, we have solutions for this - just use a single inline function, and make it *see* the constant.
That way the compiler can DTRT, either generating two copies (with the constant elided) or depending on the branch predictor.
That's particularly true in a case like this, when there is only *one* case for the normal situation (ie little-endian). Because let's face it, big-endian is completely dead and legacy model.
Linus
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