[PATCH][X86][Haswell][SchedModel] Add exceptions for instructions that diverge from the generic model.

[Quentin Colombet]

Ping?

Thanks,
-Quentin

On Aug 12, 2014, at 10:04 AM, Quentin Colombet <qcolombet at apple.com> wrote:

> Hi Nadav,
> 
> On Aug 12, 2014, at 9:29 AM, Nadav Rotem <nrotem at apple.com> wrote:
> 
>> Hi Quentin, 
>> 
>> Sorry for the delay in response. Thanks for taking the time to work on improving the scheduling model for x86. 
> 
> Thanks for taking a look!
> 
>> 
>>> On Aug 8, 2014, at 5:10 PM, Quentin Colombet <qcolombet at apple.com> wrote:
>>> 
>>> Hi,
>>> 
>>> This series of patches adds an exception for each instruction that diverges from the generic scheduling model.
>>> It follows the structure of Agner Fog’s instructions tables and provides a patch for each sub-group.
>> 
>> Did you use Agner’s tables or the tables from the intel optimization guide? 
> 
> I used Agner’s tables. As far as I can tell the intel optimization guide is not precise enough for this level of details. Moreover, Agner’s data are based on actual measurements :).
> 
> Cheers,
> -Quentin
>> 
>>> 
>>> Although I had observed changes of the schedule of some test cases in the llvm-testsuite + SPECs, I had not measured anything than noise.
>>> Note: I have measured both ‘-O3 -march=native' and ‘-Os -march=native’ on a Haswell machine.
>> 
>> :( 
>> 
>>> 
>>> Thanks for your reviews.
>>> 
>>> -Quentin
>>> <0001-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0002-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0003-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0004-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0005-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0006-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0007-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0008-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0009-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0010-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0011-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0012-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0013-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0014-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0015-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0016-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0017-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0018-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0019-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0020-X86-Haswell-SchedModel-Add-architecture-specific-sch.patch><0021-X86-Haswell-SchedModel-Tidy-up.patch>
>> 
> 
> 
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