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


On Fri, Sep 13, 2013 at 12:09 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
> 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?
>

Yes, I can. Thanks for the suggestion. Will fix it, and with Ivy
Bridge and Haswell included.

Thanks,
Wei.


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