Messages in this thread | | | Date | Mon, 21 Oct 2013 10:50:38 -0400 | From | Waiman Long <> | Subject | Re: [PATCH v2 2/4] perf: streamline append_chain() function |
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On 10/19/2013 08:29 PM, Andi Kleen wrote: > Waiman Long<Waiman.Long@hp.com> writes: > >> as well as >> using ?: statement which can be more efficient than the regular if >> statement in some architectures. > I don't think that's true, the compiler does if conversion anyways for both. > > But change seems reasonable. > > -Andi > >
That may be true for a simple if statement. However, the condition was checked as the last of 3 tests. I doubt if the compiler is able to optimize that effectively.
-Longman
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