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

[Chandler Carruth]

On Wed, Apr 25, 2012 at 10:54 PM, Chandler Carruth <chandlerc at gmail.com>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
>

I should have given more details:

x86-64 nehalem core, xeon e5520

I'm hoping to spin up testing on westmere, some older intel cores, as well
as some AMD chips tonight... All of these x86-64.
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