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

[Chandler Carruth]

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...
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