[llvm-commits] PATCH: Teach LLVM to form minimal multiply DAGs

[Chandler Carruth]

On Thu, Apr 26, 2012 at 2:04 PM, Evan Cheng <evan.cheng at apple.com> wrote:

>
> On Apr 25, 2012, at 10:54 PM, Chandler Carruth wrote:
>
> On Wed, Apr 25, 2012 at 10:45 PM, Evan Cheng <evan.cheng at apple.com> wrote:
>
>>
>>
>> On Apr 25, 2012, at 9:20 PM, Chandler Carruth <chandlerc at gmail.com>
>> wrote:
>>
>> On Tue, Apr 24, 2012 at 4:47 PM, Evan Cheng <evan.cheng at apple.com> wrote:
>>
>>> Interesting stuff. But it seems like we need some performance data. Are
>>> they coming? :-)
>>>
>>
>> Indeed!
>>
>> This has almost no impact on LNT. The only regressions look like noise to
>> me (<3%, only two benchmarks)
>>
>> However, SPASS speeds up by 8%!!! =D
>>
>>
>> Which platforms?
>>
>
> x86-64
>
> Should i test it on some others? i don't have any arm hardware handy, but
> can ask folks who do...
>
> I could check 32-bit i suppose, i don't usually track 32-bit x86 because
> it isn't relevant performance wise for anything I use...
>
>
> I was hoping for ARM numbers as well.
>

I don't have any reasonable ARM hardware to test on. I'm happy to help in
any way I can, or if others have numbers?
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