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Re: Basic Block Statistics


On Tue, May 16, 2017 at 2:33 PM, Jeff Law <law@redhat.com> wrote:
> On 05/16/2017 12:24 PM, Will Hawkins wrote:
>> Hello everyone!
>>
>> I apologize if this is not the right venue to ask this question and/or
>> this is a waste of your time.
>>
>> I was just wondering if there are statistics that gcc can emit that
>> includes either a) the average number of instructions per basic block
>> and/or b) the average size (in bytes) per basic block in a compilation
>> unit.
>>
>> If nothing like this exists, I am more than happy to code something up
>> if people besides me think that it might be interesting.
>>
>> I promise that I googled for information before asking, but I can't
>> guarantee that I didn't miss anything. Again, I apologize if I just
>> needed to RTFM better.
> I don't think we have anything which inherently will give you this
> information.
>
> It'd be a useful thing to have though.  Implementation may be made more
> difficult by insns that generate > 1 instruction.
>
> Jeff

Thank you, Mr. Law. I think that this is something I'd really like to
work on. As I start to take a peak into how hard/easy this is to
implement, I may circle back and ask some additional technical
questions.

Thanks for your quick response!
Will


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