[llvm-dev] Enable vectorizer-maximize-bandwidth by default?

Chandler Carruth via llvm-dev llvm-dev at lists.llvm.org
Tue May 30 01:27:29 PDT 2017


If you care about such hardware, please run benchmarks with the flag?

Dehao has made this flag available. It is important that those who care
about particular hardware provid ebenchmark results. Not everyone in the
community will have access to particular hardware variants.

On Tue, May 30, 2017 at 1:14 AM Flamedoge <code.kchoi at gmail.com> wrote:

> Thank you for running these.
>
> May I suggest testing on AVX2 capable hardware? That would be Intel
> Haswell, AMD Carrizo and up.
> I'm not sure what "vectorizer-maximize-bandwidth" implies, but doubling
> the vector lanes may help light up parallel regions.
>
> Kevin
>
> On Tue, May 30, 2017 at 12:58 AM, Chandler Carruth via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> On Fri, May 19, 2017 at 4:01 PM Adam Nemet via llvm-dev <
>> llvm-dev at lists.llvm.org> wrote:
>>
>>> I will run it on Cyclone/AArch64 next week.
>>>
>>
>> FYI, we're still waiting on these Adam...
>>
>> _______________________________________________
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>> llvm-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>
>>
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