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<div class="moz-cite-prefix">On 2013-06-15 14:18 , Evan Cheng wrote:<br>
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<div>Apple folks are also gearing up to push on the PGO front.
We are primarily interested in using instrumentation, rather
than sampling, to collect profile info. However, I suspect the
way profile ended up being used in the various optimization
and codegen passes would be largely similar. </div>
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Excellent! We are initially interested in instrumentation, as
well. This is where we draw most of our performance with GCC.
Sampling is showing a lot of promise, however. And it really is not
much different than instrumentation. Most of what changes is the
source of profile data.<br>
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<div>There is also some interests in pursuing profile directed
specialization. But that can wait. I think it makes sense for
us to get together and discuss our plans to make sure there
won't be duplication of efforts. <br>
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Sure. My initial plan is fairly simple. Triage the existing
instrumentation code and see what needs fixing. I'm starting this
in the next week or so. What are your plans?<br>
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Diego.<br>
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