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Re: Fwd: [PATCH] Scheduling result adjustment to enable macro-fusion


On Fri, Sep 13, 2013 at 11:28 AM, Wei Mi <wmi@google.com> wrote:
>> Checking corei7/corei7-avx explicitly isn't a good idea.
>> It is also useful for Ivy Bridge and Haswell.  I think you
>> should use a variable to control it, similar to
>> TARGET_FUSE_CMP_AND_BRANCH.
>>
>>
>> --
>> H.J.
>
> Different x86 microarchitectures support macro-fusion for different
> compare and branch combinations. I need to differentiate various x86
> microarchitectures. If use TARGET_FUSE_CMP_AND_BRANCH like vars to
> control it, it requires a bunch of them. That is why I choose to check

Can you use TARGET_FUSE_CMP_AND_BRANCH covers cmp/test
and branch,  TARGET_FUSE_ALU_AND_BRANCH covers and/add/sub/inc/dec
and branch?

> corei7/corei7-avx in that function. I don't add core-avx-i/core-avx2
> for now because I don't have those machines for testing.
>

Kirill, can we test it on Ivy Bridge and Haswell?

Thanks.

-- 
H.J.


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