r207433 - [driver] Disable the slp vectorizer at -O0, -O1, and -Oz. This mirrors the

[Chad Rosier]

One argument for matching the behavior of the loop vectorizer is that it's
probably what the user expects.

> Hi Chandler,
> The discussion was in the PR as well as via IRC.  I'm certainly not
> against continuing the discussion.
>
> I believe everyone strongly agrees this shouldn't be on at -O0;  Let me
> know if you feel otherwise.  The decision to match the behavior of the
> loop vectorizer at -O1 and -Oz was mostly arbitrary and I have no strong
> feelings either way.
>
> What are your thoughts?
>
>  Chad
>
>> On Mon, Apr 28, 2014 at 12:30 PM, Chad Rosier
>> <mcrosier at codeaurora.org>wrote:
>>
>>> -O1, and -Oz
>>
>>
>> Wait, why? Based on what discussion?
>>
>> This is a pretty significant change, I'd like to understand why it was
>> made.
>>
>
>
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> hosted by The Linux Foundation
>


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