Re: Miscellaneous XCode Questions
Re: Miscellaneous XCode Questions
- Subject: Re: Miscellaneous XCode Questions
- From: Sanjay Patel <email@hidden>
- Date: Fri, 12 May 2006 05:05:53 -0700 (PDT)
> 4. (more of a Shark question, really...) When I show both Code and
> Assembly in a Shark profile for my app, over half the computation
> time is shown associated with a single line of code:
>
> 54.2% 2105 *buf = _mm_packus_epi16(ppl, ppr); ! LCP
>
> This is clearly a bug (neither the pack nor the store should generate
> the LCP warning, for one thing, and this line of code should take a
> negligible amount of time); I'll try to isolate it in a test project
> and submit a bug report, but perhaps a Shark person may recognize
> what's going on?
I'm just a Shark user :), but...
I would need to see the underlying assembly code (or whole Shark file) to
answer. Most likely, this line of source is mapping to several asm lines
(possibly incorrectly).
We should move this question over to the performance-dev list. :)
--Sanjay
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